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Home My WebLink About20181937.tiffUSE BY SPECIAL REVIEW (USR) APPLICATION DEPARTMENT OF PLANNING SERVICES * 1555 N. 17TH AVENUE * GREELEY, CO 80631 www.weldgov.com * 970-353-6100 EXT 3540 * FAX 970-304-6498 FOR PLANNING DEPARTMENT USE: AMOUNT $ APPLICATION RECEIVED BY DATE RECEIVED: CASE # ASSIGNED: PLANNER ASSIGNED: Parcel Number*: 1 2 1 1. 0 2. 1 _0 0. 0 0 4 Address of site: 16226 COUNTY ROAD 38 Legal Description: Part of the North -half Zone District: Ag Acreage: 239 FEE OWNER(S) OF THE PROPERTY: Name: Anadarko E&P Onshore, LLC Section: 2 (*A 12 digit number on Tax I.D. information, obtainable at w w w .w eldgov.com) . Township: 3 N Range: 66 W Floodplain: Y N Geological Hazard: Y N Airport Overlay: Y N Company: Anadarko E&P Shore, LLC Phone #: 720-929-6000 Street Address: 1099 18th St, Suite 1800 Email: City/State/Zip Code: Denver, CO 80202 Name: Company: P hone #: Street Address: Email: City/State/Zip Code: Name: Company: Phone #: Street Address: City/State/Zip Code: Email: APPLICANT OR AUTHORIZED AGENT: (See below. Authorization must accorrpany all applications signed byAuthorized Agents) Name: Nathan Keiser Company: Kerr McGee Gathering, LLC P hone #: 120-929-6896 Street Address: 1099 18th St, Suite 1800 Email: nathan.keiser@anadarko.com City/State/Zip Code: Denver, CO 80202 PROPOSED USE: Natural gas processing facility I (We) hereby depose and state under penalties of perjury that all statements, proposals, and/or plans submitted with or contained within the application are true and correct to the best of my (our)knowledge. Signatures of all fee owners of property must sign this application. If an Authorized Agent signs, a letter of authorization from all fee owners must be included with the application. If a corporation is the fee owner, notarized evidence must be included indicating that the signatory has to legal authority to sign for the corporation. S ignature: Owner or Authorized Agent Date Signature: Owner or Authorized Agent Date Nathan Keiser P rint Name Print Name Rev 4/2016 Use by Special Review Application Proposed. Latham Part of the North Gas Half Processing Plant of Section 2, Township 3 North, Range 66 West of the Weld 6th Principal County, Colorado Meridian - - - .--ai i 111 PV-# 4r a i Ow a I e_ w A JCL_ t it -L1.11 - � • I it mis - + le , iii , • u4 �K7 'ti Yl+L w 1Lr. �, I f I , 11 4 r• i tit, I ..i '- , _ tr.. , ; .{ ` � X1•.1 _ Pe t!- Sr) f IA 1. r t ' UIJ t.lI-1 Jiti.;:pill+� C�� k. , ! , lc; g..� } . _ 'Ir -,S,- .. glee I IX c _,., ,,_,._ . t- a __ -3: . . ..___/..„st, _ , , • I ir . -4 glue e___. i• r' r+'-- e5.T.ti 1L.14.. • - 1llL' i - i i i APPLICANT: i Kerr-McGee i 1099 Denver, i i i i i i i Kerr/It/Wee I I i January I I Gathering, Colorado k'i 18th 31, St 80202 2018 LLC TABLE OF CONTENTS 1. Description of Proposed Use.ri.i.....i.ii4ri.iitoss.ririi.iri.i.ii4........iii.i.iliii.i 4104...............* it O. i...4 ro.•.ro. 2. Surrounding Uses and Compatibility with Surrounding Uses. 4 3. Details of the Site •sees. i••s•.h eir•...n iseie•e••s•s•iri••s•••••i•r•r••s iii sires ssssi•iiirss•i••si••i•4i•.•••••• see i•• Suess! a. Number of people who will use this site 5 b. Number of employees proposed to be employed at this site.•.•..........•.m.........•...........•5 c. Hours of operation.4...r.r...4r4...rrr. • iii iii•risisee •i•riiiii iii iii••isss situ.•.• grit.... see ...i44.i.se.i.iii.5 d. Type and number of structures to be built on this site 5 e. Type and number of animals --..rr4.iiiiiiiir4riiii•i•i•seeuss•etis.toS f. Kind of vehicles that will access this site and how often ......or..n000n.nrrri.irii..i4r4iiirrri•i4rr...rrr•....S g. Fire Protection S h. Water source on the property rrr Ogg see iii•••••ii444sii ••••••• es •••••••• ••••••••• Ogg see Sire•ii• •n••••r•i .i. ee•sss•••••is•s5 I. Sewage disposal system •s•,.,s•s..,ssss„sss.,. i•i.,. •••......... •s•,.. ••s,.,i _ _ 5 j. Storage or warehousing5 4. Proposed Landscaping•iii•••i•in•ni•iiiii.i•r•iii••••iir4•niiiii.i.r•.iii•••iii444iiiiiii.i•rriii•4••i••n••iiiii.i.riiiii••4i••n••6 S. Storm Water Drainageiri,,,•i•,,,i.i.,,,.r•,,, iri,,, ... ,,,i.i,,.r•,,,iri,,,...,,,i.i,,....,,,rir,,, ,,,,,, ,,, ,,, iii,,, ... ,,, ..,,,• 6. Construction Period 6 7. Storage & Stockpiling of Wastes / Waste Handling Plan i••••i•i•r4riii••i.i.ririiir••i•i4r4i•iiiii.i•riiii•4••i•4n6 8. List All On -site and Off -Site Improvements and Tinneline.i................i.,,,...,,,..i.........i.i,,,iii.,.i..,,7 1. Notification Requirements 8 2. Operation Standards 9 a. Noise Control 9 b. Air and Water ater Quality i4.i.•!•iinr• 4 hies•.. 04409 Co Le hti n ..u...e..•i r••i.i rrr iii r•r iii rrr ii r••i.irrriiir•rii•rrr iii r4•.i. rrr iii rriii rrr iii r••susses use rrr iii rrr iii r•••i•rrr ii r•r •i...1 ! d. Weed C ntrOlr,,,,.is,,,i.i,,,iii,,,iii,•,•••,,,.i.,.,i.i,,,ii,,,i.i,,,.i.,,,iii,,,iii,,,.i.,,,i.i,,,iii,,,•ii,,,i.i,,,.i.,,.ii„10 i Required Permits•.•iiin•niiis•niii•.•••i•n••iiirnr iii*!.*nisiii•i•iiii•i•i•r•iiii•i•iiii•iiii•i•iii•iiiiiiiiiii•i•iiiiriiii•iiiii•10 a. Weld County i i i. r iiiiiiiiiii4i4iiir.•iii.ri.iii•Sion*..•ii4i.i.riiiiiiiiiii4.4.i.r.•iiiiriiiiiiiiiiiriiiii4i.i.riiiiiiiiiii4l0 b. Mountain View Fire Protection District.1.......•fl....iii...iii...iii,,,i.i,,,sYIP ,,,iis,.,iii,.,sii.,.iii............ 10 c• Transport Permits n•ni GO egg s....iiin•sii•nsiiisss sisisiiii sss i.....d iisisii......i........... C, 10 d. Grading Pern'litii•i.iirriii•iiii••n•iiir•i.i.r•riii4•••ii444.ii4i.i.r•riii4•••ii444.i.4.4i.iir•iii•••ii••n••....i.i.r•riii••ii••r10 e. Access ermit P.... s..........,•_ r...,rir.,,...,,,,i.,,,see s.,iri,,,...,,,i.i,,...i,,,rir..................... s.i,,,,... 1 f. Right -of -Way Way (ROW) Use Permit* O *nee iii4r••••4.4•i•••• ii i i•r ii ir•ii•i•4•i••• -- - _ • - 10 g. Construction Stormwater Ater Permit .. ..,MOW WOO .......... r•..,iPIP ,,,,r...0UU•WOO Of. ,..............,.WOO Of. ...........0 10 h. Non -Exclusive License Agreement/Road Maintenance Agreement11 gli Trafficnn•i••nsio n4•isnn•i ii n•r i•no - - -- -• _ _ - - - - -- -r. _ _ - - - - - _ _ - -- _ _ - - --er.i.ere...4 --. - 11 6. wireand Emergency Response „•i•,,,sir,,,ii.,,.riri,,,e,•,,,r.,,,i.i,,,iri,,,e,•,,,rir,,,iii,.,,i,,,.,•,,,rir,,,iii,.,ri.,11 APPENDIX 12 L USIA Drawings .13 IL Access Permit Applications14 III. IVIitgations and Communications Plan ......i....i .••..b ■■..•..i..•415 Iv. Deed and Certificate of Conveyances 16 V. Affidavit of Interested Land Owners (Surface) ..i....i.i...*gene ...17 VI. Emergency Information Sheet . 18 VII. Drainage Narrative 20 VIII. Communications Tower (Gen eral Depi ction).•.•••OOO - if..i'.f..•'...••'...'f.'...'f.2 1 IX. Lighting Design Basis 0000 OOOOnisi 22 X. Air Pollutant Emission Notice (APEN) - ui•.u.•..•.n..•.n..•...i•,...• - .n•.•.n•...23 XL Communications Tower Plan....24 XII. Pipeline Criteria 26 Proposed Latham Processing Facility Section 2-T3N-R66W Weld County, Colorado 1 SECTION 1 10 DESCRIPTION OF PROPOSED USE: This Special Use Permit application is referred to as the Latham Processing Facility application and is submitted by Kerr-McGee Gathering, LLC (KMGG), an Anadarko Company. Anadarko (APC) and KMGG operate nearly 5,000 oil and gas wells in the Denver-Julcsburg (D Basin with the vast majority being located in Weld County, Colorado. All of these wells produce varying amounts of natural gas that need to be routed via a system of underground pipelines to processing facilities so that the natural gas can be treated and refined, resulting in a useable product for consumers. The proposed site is to include amine treating and cryogenic processing facilities for natural gas processing. A natural gas processing facility helps to extract natural gas liquids from the gas stream. These liquids, mostly ethane and other lighter hydrocarbons, require cooling the gas to extract high rates of product. Initially the facility uses an amine solution to remove carbon dioxide and absorption beds to remove hydrogen sulfide from the gas. When gases are treated with an amine solution they result in products that can be sent for further processing into more useable forms. After leaving the amine treatment portion of the processing facility, the gas continues to a dehydration and cryogenic facility for further processing. The gas is run through a series of equipment utilizing refrigerant cycles and turbines to cool the gas stream. The heavier ends of the gas condensates and ethane and other hydrocarbons are separated from the methane which stays gaseous. Usually this process allows for 90-95% recovery percentage of the ethane originally contained in the gas stream. Also, being included in this application is two 24' and one 16" high-pressure pipelines that will be used to take gas and deliver the processed gas to metering points. The site will be powered by Xcel Energy andcontain a switching station that will take power and convert to 13.8 kv. The application addresses the need for a processing facility to meet the demands associated with the increase of oil and gas production in the Wattenberg Field. This proposed site is located on parcel 121102100004 and is owned by Anadarko E&P Onshore LLC but will be operated and applied for by Kerr McGee Gathering, LLC. It is currently within unincorporated Weld County and zoned Agricultural. The proposed facility is located on a portion of the north -half of Section 2, Township 3 north, range 66 west. The current access to the facility is existing and located on WCR 35, 1600 feet south of the intersection of WCR 38. The parcel is surrounded by parcels that are also zoned Agricultural. The use is currently farmland with multiple oil and gas wells and production facilities. Proposed Latham Processing Facility Section 2-T3N-R66W Weld County, Colorado 2 Proposed Latham Plaint Exhibit A —Vicinity Map Proposed Processing Plant Location: The proposed operation outlined in this application, includes but is not limited to various natural gas processing equipment that will be used to process, compress, and transport natural gas. The equipment being proposed will include compressors, amine contactors, hydrogen sulfide absorption beds, electrical utiity buildings, cryogenic units, refrigeration units, residue compressors, vessles, tanks, towers (demethanizer, etc...), thermal oxidizer and flare. A communications tower is also proposed, to allow the site to be monitored remotely. The communications tower will be a 150 foot tall tower. There will be 3-4 dishes on the tower and it will handle all communications on site, and co -location will be possible. Please see the Site Plan in the Appendix for a more detailed layout and description of the proposed equipment and a reasonable facsimile of the communications tower. The site operate 24 hours a day, 7 days a week, 365 days a year. However, the station will automatically adjust to run only the equipment needed to adequately handle the volume of gas flowing through the facility. Facility Operations and Ownership: Latham Processing Facility Kerr-McGee Gathering, LLC 1099 18th St., Suite 1800 Denver, Co 80202 Proposed Latham Processing Facility Section 2-T3N-R66W Weld County, Colorado 3 CONSISTENCY WITH THE INTENT OF THE FORT. LUPTON COMPREHENSIVE PLAN AND ZONE DISTRICT REGULATIONS, AND SURROUNDING LAND USES The proposed use is consistent with Chapter 22 and any other applicable code provisions or ordinance in effect. Section 22-2-10(D) emphasizes the "Extraction of natural resources as an important part of the economy of Weld County. Such extraction operations should minimize the impacts on agricultural lands and agricultura 1 operations." This facility will contribute to the expansion of the County's econo plc base by providing increased capacity for future natural gas production. The proposed addition of a processing facility in this location conserves land by utilizing property that has been owned by Anadarko for multiple years eliminating the need to remove agricultural lands from production elsewhere in Weld County. Furthermore, after the addition of this processing plant, the agricultural use of the surrounding land will remain unchanged, which is in agreement with Section 22-5-100.B (0G. Goal 2) strive to, "Ensure that the extraction of oil and gas resources conserves the land and minimizes the impact on surrounding land and the existing surrounding land uses." Additionally, Section -5-1.00..A (0G. Goal 1) states: "Promote the reasona ble and orderly exploration and development of oil and gas mineral resources," A processing facility utilizes pipeline infrastructure to be the most orderly manner of transferring the developed gas resource within the county. The Use by Special Review application for this Facility that is part of a comprehensive gas processing network is necessary to move larger volumes of gas. These larger volumes are due to increases in drilling activity and projected additional production increases anticipated by producers in the Weld County area. Moreover, Section 22-5-1O0.B, (0G. Policy 2.9) outlines the objective to, "Impose protective measures through available state, County and federal regulations to ensure that the mineral operator conducts operations in a manner that will minimize current and future environmental impacts." The Spill Prevention and Countermeasure Plans for the proposed Dacono Compressor Station are developed in accordance with federal Environmental Protection Agency (EPA) and Colorado Department of Health and Environment (CDPHE) standards, and all activities will be in compliance with the permit and control provisions of the state regulations (Colorado Air Quality Control Program, Title 25, Article 7, C.R.S. as applicable). CONSISTENCY WITH THE INTENT OF THE WELD COUNTY CODE, CHAPTER 23 (ZONING) AND THE ZONE DISTRICT IN WHICH IT IS LOCATED. Oil and gas facilities are allowed as a use by right in the A (Agricultural) Zone District. However, oil and gas support and serviceoperations such as oil and gas processing require the approval of a Use by Special Review Permit. The proposed use is consistent with the intent of the A (Agricultural) Zone District. Section 23-3-40.A.2 of the Weld County Code provides for Oil and Gas Support and Service, and Section 23-3-40.L of the Weld County Code provides for a communications tower greater than 70 feet in height as a Use by Special Review in the A (Agricultural) Zone District. 2. SURROUNDING USES AND COMPATIBILITY WITH SURROUNDING USES. There are currently no USR permits on the proposed site. The proposed facility does not interfere with the existing use of the area, and remains compatible with the current zoning. Furthermore, the lease acreage also encompasses existing wells and production facilities and is constructed in areas that maintain all applicable Weld County setback requirements. This is consistent with Sec. 23-2-240. A11. States that Proposed Latham Processing Facility Section 2-T3N-R66W Weld County, Colorado 4 "Uses by Special Review in the A (Agricultural) Zone District shall be located on the least prime soils on the property in question unless the applicant can demonstrate why such a location would be impractical or infeasible." 3. DETAILS OF THE SITE a. Number of people who will us•e this site There will be 10 penman a i t staff on location at all times. The site is monitored 24 hours a day 7 days a week by the facility staff and by the Integrated Operations Center, in Platteville. The site will have its own water well and septic system. There will be restroom facilities on site with running water. b. Number of employees proposed to be employed at this site There will be approximately 10 permanent staff on location at all times. During construction of the facility additional personnel will be on site until it is operational. c, Hours of operation The facility will run 24 hours a day 7 days a week based on demand. Trucks will generally only come to the site during the hours of 8 am to 6 pm unless there is an emergency. d. Type and number of structures to be built on this site Please see the Site Plan in e Appendix for a more detailed layout of all proposed structures and communication tower. e. Type and number of animals There are no animals on site. f, Kind of vehicles that will access this site and how often I1rG/PC employees will visit the site each day in a pick-up truck for shift work. Larger vehicles with trailers may come to the site for delivery and storage, repair, and maintenance purposes only, on a periodic basis. There will not be product truck loading facilities being included in this application as any processed gas and liquids will be sent back into pipelines instead of being trucked from the location. There will be periodic truck loading of utility and waste fluids to and from site. In general t s is less than 1 load per week. g. F ire Protection The Platteville-oilcrest Fire Protection District provides fire protection to this area. A referral packet will be sent to the District by the County. h. Water source on the property This site is planned to be serviced by a well. The well will be drilled before the plant is operational. Documentation of the well approval will be provided to Weld County. Bottled water will be available during construction and during operation as well. i. Sewage disposal system A septic system will need to be installed for the sewage disposal on the site. There are plans for a restroom with running water to be located on site. Approval of the septic permit will be obtained and designed by an engineer, installed, and inspected before the plant is operational. j. Storage or warehousing The laydown yard will be used for storage. Proposed Latham Processing Facility Section 2-T3N-R66W Weld County, Colorado 5 4. PROPOSED LANDSCAPING it is anticipated that the processing facility and laydown area will be enclosed with a 25' designed sound wall. This will not only provide visual mitigation but also as a security device for the life of the facility. Since the size of the wall helps screening and light pollution, no additional landscaping is proposed for this application. Reclamation Procedures Upon termination of the proposed project, all equipment would be removed. The ground would be re- graded to accommodate agricultural uses or be re -vegetated to 80% of pre -disturbance vegetative cover in accordance with the COGCC 1000 Series Rules. The pre -disturbance vegetation cover shall be determined by the undisturbed surrounding area. KMGG would also be willing to evaluate coordinating reclamation efforts with Weld County Extension, Public Works, and the Soil Conservation District. 5. STORM WATER DRAINAGE A detention pond has been added to address site drainage. A drainage report has also been submitted and will provide additional details. 6. CONSTRUCTION PERIOD Construction of the proposed facility is expected to commence shortly after the site plan and Use by Special Review application are approved. We expect construction to be complete by the end of 2019. 7. STORAGE & STOCKPILING OF WASTE / WASTE HANDLING PLAN Minor waste are expected to be generated on site from the operations and maintenance of gas processing equipment. Typically these are used as coolants, lubricants, and filtration/absorbency products and need to be changed on a regular basis. The wastes generated are removed on a monthly basis and either recycled or disposed of by Mesa Oil. The replacement products needed as part of this equipment maintenance will be stored in steel tanks mounted on steel skid mounted containment units or brought in by truck. The seams will be sealed. Each unit will be sufficient to contain 1.5 times the tank capacity. Additionally, oil and coolant are also stored within the compressor units themselves and spills are contained by the structural steel skid of the actual equipment. Associated SDS sheets are available upon request. No Chemicals will be stored at the laydown yard, nor will any vehicles be washed. The trash generated at the processing facility and the laydown yard from will be contained in dumpsters and are emptied either weekly or biweekly. The roll -off is emptied on a call -out basis. Proposed Latham Processing Facility Section 2-T3N-R66W Weld County, Colorado 6 Waste Handling/Recycling Contact Information: Recycling Services: Waste Handling Services: Portable Toilet Services: Mesa Oil, 7239 Bradburn Blvd. Westminster, CO 80030 (303) 426-4777 Waste Management 2400 West Union Ave Englewood, CO 80010 (303) 482-6406 Redi Services 7601 Miller Drive #G Frederick, CO 80504 (720) 378-7873 Or Reliable Services 1616 2nd Avenue Greeley, CO 80631 (970) 381-1242 Stallion Oilfield Services 2116E Hwy. 402 Unit B Loveland, CO 80537 (970) 646-3129 In the unlikely event of a motor vehicle oil leak (potentially during construction), KMGG will take appropriate measures to mitigate the effects of the spill/release. If a spill/release meets or exceeds any regulatory reporting criteria, KMGG will report the spill to the appropriate regulatory agency(s). KMGG's standard operating procedures are to excavate the impacted soils and transport them to a licensed disposal facility. As appropriate, confirmation soil samples will be collected from the excavation for laboratory analysis. Laboratory analytical results will be utilized to demonstrate effective remediation to below the appropriate regulatory standards. The laboratory reports will be included in any written report to a regulatory agency. Following completion of the excavating activities, the area will be backfilled and returned to its pre-release grade. No vehicles be washed on site. Additionally, All KMG GIAP C and contractor activities will be operated in a manner that prevents spills and releases of crude oil, natural gas, produced water and other wastes to the environment. Non -routine waste (e.g. spills or releases) will be managed in accordance with KMGGIAPC's Emergency Response and Oil Spill Contingency Plan. Spills, as appropriate, will be reported to the proper regulatory agency(s). Additionally, a site -specific Spill Prevention Control and Countermeasure (SPCC) Plan will be developed to outline appropriate actions to be taken in the event of a spill or release. The SPCC Plan, in conjunction with the Emergency Response and Oil Spill Contingency Plan, will ensure that all appropriate response actions are taken and that all waste will be handled in accordance with applicable rules and regulations. Both documents are written in accordance with requirements set forth by the Environmental Protection Agency. A copy of this plan will be submitted to Weld County within six months after start of operations. 8. LIST ALL ON -SITE AND OFF -SITE IMPROVEMENTS A list of all the equipment is shown as part of the USR Site Plan drawing package. Proposed Latham Processing Facility Section 2-T3N-R66W Weld County, Colorado SECTION 2 1. NOTIFICATION REQUIREMENTS In accordance with Section 23-2-260 (B) (9) of the Weld County Code a certified list of the names and addresses of the owners of property within 500 feet of the subject property (Parcel 4 121102100004) is listed below and provided in the Appendix. The County is responsible for mailing the notice. This list was created from Assessor records of Weld County, January 29, 2018. A signed version is available in the appendix of this application. Account Parcel Owner Mailing Address R4473586 105734000046 SALERNO ALLISON JANE R4473586 105734000046 SALERNO CARMINE THOMAS 18101 COUNTY ROAD 33 PLATTEVILLE, CO 806518408 R4473686 105734000047 B & A TRUST 348 S 5TH ST LA SALLE, CO 806453031 R4475186 105735000030 MILLER DEBORAH S R4475186 105735000030 MILLER RICHARD A 18026 COUNTY ROAD 33 PLATTEVILLE, CO 806518407 R4475286 105735000033 NAGEL CONNINE K R4475286 105735000033 NAGEL DENNIS D 16311 COUNTY ROAD 38 PLATTEVILLE, CO 806518521 R4475386 105735000035 GBU ENTERPRISES LLC 119 1ST ST EATON, CO 806153478 R0361095 105735000045 YOUNG DENNIS W 16063 COUNTY ROAD 38 PLATTEVILLE, CO 806518521 R8948172 105735300006 BRALY HENRY 601 E ROGERS RD LONGMONT, CO 805016088 R8948173 105735300007 FERGE RICHARD F PO BOX 1217 PLATTEVILLE, CO 806511217 R1422602 105735400002 DCP MIDSTREAM LP ATTN: PROPERTY TAX DEPT 5718 WESTHEIMER RD STE 200O HOUSTON, TX 770575774 Proposed Latham Processing Facility Section 2-T3N-R66W Weld County, Colorado 8 R3363005 121101100001 LUDWIG FAMILY FARMS LLC 18010 COUNTY ROAD 38 PLATTEVILLE, CO 806518410 R3363205 121101300002 ROCKY MOUNTAIN FARMS LLC C/O STEVEN G LUDWIG 17978 COUNTY ROAD 39 PLATTEVILLE, CO 806518411 R4841886 121102000013 GRAZNAK FAMILY TRUST C1O CHARLES AND AUDREY GRAZNAK 205 OLIVE LN PLATTEVILLE, CO 806517500 R8060899 121102000017 BARCLAY FARMS LLC 13017 COUNTY ROAD 30 PLATTEVILLE, CO 806518111 R6786682 121102100003 ANADARKO E&P ONSHORE LLC 1099 18TH ST STE 1800 DENVER, CO 802021918 R6786683 121102100004 ANADARKO E&P ONSHORE LLC 1099 18TH ST STE 1800 DENVER, CO 802021918 M4842086 121102100004 CONAGRA FOODS PACKAGED FOODS CO INC C/O BUTTERBALL LLC 501 N OAK FOREST RD GOLDSBORO, NC 275348341 R3908705 121103100020 WEBBER LORENE R3908705 121103100020 WEBBER CLIFFORD STANLEY 15156 COUNTY ROAD 38 PLATTEVILLE, CO 806518519 2. OPERATION STANDARDS a. Noise Control The operation of the processing facility will comply with Weld County noise standards for non - specified areas. Noise will be emitted from the proposed facility, however, the daily maintenance performed by sub -contractor or APC/KMGG employees will be done by pick-up truck and trailer and typically during normal business hours. The rural setting of the project location is preferred to mitigate the effects of noise emissions on the surrounding property owners. Additionally the facility has been designed and engineered to operate within non -specified zone districts. Please see appendix for a copy of the Noise Mitigation Plan. b. Air and Water Quality All activities will be in compliance with the permit and control provisions of the Colorado Air Quality Control Program, Title 25, Article 7, C.R.S. as applicable. No waste water will be discharged within the site. All water and waste is carried by vehicle off the site. Proposed Latham Processing Facility Section 2-T3N-R66W Weld County, Colorado 9 c. Lighting All lighting on the facility will be downcast and shielded. Lighting will be provided for security, evening maintenance, and emergency work. Any source of lighting on the site shall be shielded so that light will not shine directly onto adjacent properties. Nor will direct or reflected light from any source on the project site create a traffic hazard to operators of motor vehicles on the adjacent road access. There will be lights required for safe operation of the site. In additional all office, motor control center, power distribution center, and compressor buildings will have a wall mounted light at each door. A light mitigation plan has been created and included in the appendix of the application. See plan for additional lighting details. d. Weed Control The facility will be kept free of weeds, rubbish, and other waste material. The area will be treated if necessary and as practicable to prevent invasion of undesirable species and noxious weeks. 3. REQUIRED PERMITS a. Weld County A Use by Special Review Permit is required to be approved by the Weld County Board of County Commissioners prior to construction, including release of grading permits for this facility. I IGG/APC will submit any additional permits necessary for county approval prior to commencement of construction site. b. Platteville-Gilcrest Fire Protection District The Site Plan and Special Review Use Application will be referred to and reviewed by the Platteville-Gilcrest Fire Protection District. Approval of the plans is expected. Any requested Safety Data sheets (SDS) will also be provided to the Fire Protection District upon request. c. Transport Permits A Transport Permit for oversize load andlor overweight vehicles will be obtained through Public Works prior to construction if required. d. Grading Permit A grading permit is needed for disturbing an area of 1 acre or more. A grading plan will be submitted for review and approved prior to construction. e. Access Permit The access point for the facility is located off of Weld County Road 35. This entry point already exists and meets all of KMGG/APC's access requirements and has been vetted with Weld County Public Works. A new access permit will be submitted prior to construction. f. Right -of -Way (ROW) Use Permit A Right -of -Way Use Permit if necessary will be obtained through Weld County in the event any work is performed in the public right-of-way. g. Construction Stormwater Permit A Construction Stormwater Permit is needed for disturbing more than 1 acres. KMGG has area wide permit coverage under the State Colorado Department of Public Health and Environment, Water Quality Control Division, Permit Number COR-039803. Proposed Latham Processing Facility Section 2-T3N-R66W Weld County, Colorado 10 h. Non -Exclusive License Agreement/Road Maintenance Agreement KMGG will obtain an Improvements and Road Maintenance Agreement for WCR 35 if applicable. 4. TRAFFIC Processing Facility and Laydown Area: The construction process for the site will involve site grading with equipment, including but not limited to, motor graders, front end loaders, excavation equipment, and possibly scrapers. Heavy hauls involving the compressor units and some of the larger process equipment will be necessary, as will the use of large truck mounted cranes to unload and set this equipment. The length of the heavy haul trailers will determine the required access to the site off the county roads, although typically this has been an apron off the county road of about 75 to 100 feet necking down to a fenced and or gated opening of around 40 feet. This would depend on the available turning radius off the county road. There will also be concrete trucks and pumpers on a regular basis during construction. Anticipated staffing during the construction of the facility is estimated at 100-150 personnel during peak construction, 3 to 4 office trailers and 5 to 8 tool and parts vans/conex buildings. Please see Use by Special Review Questionnaire for traffic detail post construction. KMG will level then grade the laydown yard. During the construction phase of the project, APC/KMGG, will use or contract to have water trucks utilized to maintain dust suppression and fugitive particulate emissions. Also, the Stormwater Management Plan will be followed to mitigate soil erosion during construction. After completion of construction, the perimeter of the property will be stabilized using appropriate native vegetation, usually a combination of dry land /grass mixture or crop. Additionally K_MGG will gravel all access and driving surfaces affected. Areas inside the fence line will be compacted and stabilized. If necessary, KM.GG will also use or contract to control dust after construction. 6. FIRE AND EMERGENCY RESPONSE There is adequate provision for the protection of the health, safety, and welfare of the inhabitants of the neighborhood and county. All roads leading to the site and within the site will be designated and maintained to support fire apparatus. A turnaround may be constructed as necessary to accommodate fire apparatus. In addition to above -referenced rules and regulations, APC/KMGG may utilize as a guideline COGCC Rule 6064 pertaining to fire prevention and protection. APC/KM.GG has support personnel in the field or on call at all times to provide technical assistance in fire prevention and elimination. Proposed Latham Processing Facility Section 2-T3N-R66W Weld County, Colorado 11 APPENDIX Please refer to attachments. Proposed Latham Processing Facility Section 2-T3N-R66W Weld County, Colorado 12 Communications Tower Plan In order to comply with Section 23-4-840 and Section 23-4-830 of the Weld County code, the following Communications Tower Plan has been created to comply with the following standards. Response satisfy both code sections that address pertinent issues related to co -location, safety, and compatibility. 1. Existing or approved TELECOMMUNICATION ANTENNA TOWERS cannot accommodate the telecommunications equipment planned for the proposed TELECOMMUNICATION ANTENNA TOWER. There are no existing communication towers located on the same parcel and existing towers in the area cannot accommodate the equipment planned to be located at the proposed location. An evaluation determined no suitable structures existed within proximity of the proposed TELECOMMUNICATION ANTENNA TOWER. 2, The TELECOMMUNICATION ANTENNA TOWER shall not constitute a hazard to aircraft. The location of the communication tower has been selected in accordance with consultation with the Federal Aviation Administration. The FAA is the authority on hazards to aircraft. An FAA determination is underway and compliance guidance will be provided by the FAA, if necessary. 3, The TELECOMMUNICATION ANTENNA TOWER shall be placed on the property to contain on site all ice -fall or debris from TELECOMMUNICATION ANTENNA TOWER failure. The proposed TELECOMMUNICATION ANTENNA TOWER has been sited to contain all ice -fall or debris within the confines of facility location and in the general footprint of the proposed tower. 4. The proposed TELECOMMUNICATION ANTENNA TOWER shall be designed and provide for CO - LOCATION. The applicant may provide written justification and evidence why CO -LOCATION is not possible. The Board of County Commissioners may revoke permits or other administrative approvals if conditions for approval of a TELECOMMUNICATION ANTENNA TOWER includes CO -LOCATION, but: Kerr McGee would be willing to consider co -location providing the proposed equipment did not constitute a safety hazard or interfere with operations of the site. 5, The TELECOMMUNICATION ANTENNA TOWER shall have the least practicable adverse visual impact on the environment. The least practicable adverse visual impact on the environment is obtained by using a Self -Supporting Lattice Structure (no guyed wires) finished in matt gray color similar to the other structures being proposed as part of the submitted USR application. 6. The proposed TELECOMMUNICATION ANTENNA TOWER shall not emit radiation that will adversely affect human health. All emissions on the proposed location are as allowed and regulated by the Colorado Department of Public Health and Environment (CDPHE) and FCC and determined to be at safe levels. 7. The proposed TELECOMMUNICATION ANTENNA TOWER shall be the minimum height needed to accommodate the TELECOMMUNICATION ANTENNA. The proposed TELECOMMUNICATION ANTENNA TOWER has been designed to be the minimum height necessary to provide dependable communication and services to the facility. R. The proposed TELECOMMUNICATION ANTENNA TOWER shall comply with all applicable federal and State regulations. The proposed TELECOMMUNICATION ANTENNA TOWER is designed by a licensed Professional Engineer (PE) who will provide the structural engineering and stamped construction drawings to ensure that it complies with Federal and State regulations. Upon successful completion of the USR process we will submit the complete construction drawings in order to obtain building permits. 9. The design of the proposed TELECOMMUNICATION ANTENNA TOWER shall insure structural integrity. The proposed TELECOMMUNICATION ANTENNA TOWER is designed to meet the Telecommunications Industry Association (TIA) TR-14 Communication and Small Wind Turbine Support Structures Revision H of the ANSI/TIA-222 Structural Standard for Antenna Supporting Structures, Antennas and Small Wind Turbine Support Structures by a licensed Professional Engineer (PE) whom will provide the structural engineering and stamped construction drawings. 10. The proposed TELECOMMUNICATION ANTENNA TOWER shall have adequate measures to discourage unauthorized climbing and to insure the security thereof. With the tower being located within the fenced location of the proposed plant, adequate security measures are in place to prevent unauthorized climbing of the communications tower. 11. All reasonably possible sites for the TELECOMMUNICATION ANTENNA TOWER have been considered, and the proposed site is the most appropriate, available site from a land use perspective. The proposed location for the tower is within the fenced facility boundary. The proposed location is the most appropriate as it will be subject to site screening and set back from surrounding residents. 12. The proposed TELECOMMUNICATION ANTENNA TOWER shall not adversely impact wildlife. The proposed TELECOMMUNICATION ANTENNA TOWER design follows existing approved Weld County approved structures designs which have not previously had an adverse impact on wildlife. 13. A Decommissioning Plan. Adequate financial assurance to cover the decommissioning of the facility may be required as a condition of approval of the Decommissioning Plan. In the event operations cease at the site and the communications tower is no longer in use, Anadarko Petroleum / Kerr-McGee Gathering, LLC (KMG) will remove the communications tower and all of its components. Where possible, materials will be reused or recycled. Where required, waste materials for disposal will be removed by a licensed contractor and transported to a disposal site. KMG will comply with all state and federal regulations concerning site restoration. From: To: Subject: Date: Keiser, Nathan Chris Gathman RE: One more question re: Latham Thursday, May 17, 2018 7:55:32 AM Here you go Chris! • Cryo Demethanizer Tower — Vessel is a touch over 100', but with downcomer piping and additional height of the skirt, it is ''130'. • Amine Contactor (x2) — 60' • Amine Still/Reflux Accumulator— 70' (bottom half in building) • NGLDemethanizerColumn -50' • Flare —. Approximately 165' plus another few feet with foundation. From: Chris Gath man <cgathman@weldgov.com> Sent: Thursday, May 17, 2018 7:31 AM To: Keiser, Nathan <Nathan.Keiser@anadarko.com> Subject: One more question re: Latham Nathan, I was looking at the application and I could not find specifically how tall the flare (and other towers) associated with the gas plant are going to be. Do you have that information? Thanks, ChrisGathman Planner III Weld County Department of Planning Services 1555 N. 17th Avenue tel: 970-400-3537 fax: 970-400-4098 Confidentiality Notice: This electronic transmission and any attached documents or other writings are intended only for the person or entity to which it is addressed and may contain information that is privileged, confidential or otherwise protected from disclosure. If you have received this communication in error, please immediately notify sender by return e-mail and destroy the communication. Any disclosure, copying, distribution or the taking of any action concerning the contents of this communication or any attachments by anyone other than the named recipient is strictly prohibited. Click here for Anadarko's Electronic Mail Disclaimer VIII. COMMUNICATION TOWER (GENERAL DEPICTION) Proposed Latham Processing Facility Section 2-T3N-R66W Weld County, Colorado 21 Pipeline Criteria — Compliance with Section 23-2-280 1. All reasonable efforts have been made to avoid irrigated cropland or to minimize the negative impacts on agricultural USES and lands, The proposed pipelines are not on irrigated cropland nor interfering with existing agricultural uses. They are proposed to be located near the property boundary which would enable the parcel to be used for agricultural uses in the future if desired. 2. The PIPELINE - NATURAL GAS and PIPELINE - PETROLEUM PRODUCTS OTHER THAN NATURAL GAS and PIPELINE - DOMESTIC WATER will not have an undue adverse effect on existing and future development of the surrounding area, as set forth in applicable MASTER PLANS, The proposed pipelines do not interfere with proposed future development and are located in an area that could accommodate proposed development. 3. The design of the proposed PIPELINE - NATURAL GAS and PIPELINE - PETROLEUM PRODUCTS OTHER THAN NATURAL GAS and PIPELINE - DOMESTIC WATER mitigates negative impacts on the surrounding area to the greatest extent feasible. The design of the proposed pipelines does not negatively impact the surrounding area. The lines are necessary to allow natural gas to be sold to utility providers and then distributed to the public. 4. The site shall be maintained in such a manner so as to control soil erosion, dust and the growth of NOXIOUS WEEDS. The site shall be maintained to prevent dust, soil erosion, and the growth of noxious weeds. Please see Section 2 of the USR application which addresses dust control, week management, and erosion control. 5. The applicant has agreed to implement any reasonable measures deemed necessary by the Board of County Commissioners to ensure that the health, safety and welfare of the inhabitants of the COUNTY will be protected, and to mitigate or minimize any potential adverse impacts from the proposed PIPELINE - NATURAL GAS and PIPELINE - PETROLEUM PRODUCTS OTHER THAN NATURAL GAS and PIPELINE - DOMESTIC WATER, The applicant agrees to implement reasonable measures proposed. 6. All reasonable alternatives to the proposal have been adequately assessed, and the proposed action is consistent with the best interests of the people of the COUNTY and represents a balanced use of resources in the affected area. The proposed pipeline locations are contained on the parcel owned by the applicant. Alternatives were not proposed since the preferred locations are consistent with the best interests of the people of the County and do not cause undue impacts. Additionally the location was selected due to public utility takeaway abilities. 7. The nature and location or expansion of the PIPELINE - NATURAL GAS and PIPELINE - PETROLEUM PRODUCTS OTHER THAN NATURAL GAS will not unreasonably interfere with any significant wildlife habitat and will not unreasonably affect any endangered wildlife species, unique natural resource, known historic landmark or archaeological site within the affected area. The selected pipeline locations will not affect endangered wildlife species or historical landmarks or sensitive archaeological sites. 8. No adverse impact, from stormwater runoff, to the public rights -of -way and/or surrounding properties as a result of the PIPELINE - NATURAL GAS and PIPELINE - PETROLEUM PRODUCTS OTHER THAN NATURAL GAS and PIPELINE - DOMESTIC WATER. Stormwater runoff from the operation and construction of the pipelines will have no adverse impact, as the pipeline corridors will be put back to their original grade/elevation. Kerr! Gee Kerr-McGee Gathering An Anadarko Company 1099 18th Street Suite 1800 Denver, Colorado 80202 Latham Plant- High Pressure Pipelines Emergency Action Plan May2018 Latham Plant Proposed Natural Gas Pipelines - Emergency Action Plan Section 2, Township 3 North, Range 66 West Weld County, Colorado 1. Name: Kerr-McGee Gathering, LLC, an Anadarko Company 2. Scope: Ken -McGee Gathering (K.MGG) has prepared this Emergency Action Plan. The plan has been put together to address potential emergency response issues associated with the construction and operation of two 24" HP natural gas pipelines, and one 16" HP natural gas pipeline that will be used to deliver processed gas to metering points. KMGG plans to construct these pipelines in concurrently with the construction of the proposed Latham Plant. Construction is expected to be complete prior to commission. i g of the Plant. 3. Location: The proposed pipelines are located on Weld County parcel # 121102100004 and necessary to transport processed natural gas to metering facilities so they can be sold to market. 4. Regulatory Requirements: The Plan has been prepared to comply with the land use regulations of Weld County. In addition, the pipeline will be constructed and operate in accordance with regulations developed by the Pipeline and Hazardous Materials Safety Administration (PHMSA) and the Colorado Public Utilities Commission. 5. Emergency Contact List: KMGG invests significant time and capital constructing and maintaining the quality and integrity of our pipeline systems. We construct our pipelines to the highest federal standards, regardless of classification. We utilize cathodic protection to protect the pipelines from external corrosion, pressure relief devices to protect from over pressurization and pressure test each line prior to start-up to ensure the integrity of the pipe, welds and appurtenances. Ongoing maintenance of our pipelines, such as patrolling, leak surveys, valves maintenance and checking of and maintenance of cathodic protection systems help maintain the integrity of our pipelines. However, in the event of fire, injury, spill or release of hazardous materials, or any other incident requiring and emergency response, the following contacts will be made: incident Contact Phone Number Y Comments Fire, explosion serious ' injury Platteville-Gilcrest(970)737-2966 Fire District Protection Gilcrest: 911 Platteville: 911 (970) or or 785-2232 Platteville Police 911 or Department (970) 785-2215 COGCC (303) 894-2100 Gilcrest: Platteville-Gilcrest Fire District Protection 911 (970)737-2966 Platteville:reportable 911 or or Reporting impacting CERCLA p g required surface quantity hazardous for water spills substances. p ills or for of (970) 785-2232 Latham Plant Proposed Natural Gas Pipelines - Emergency Action Plan Section 2, Township 3 North, Range 66 West Weld County, Colorado Colorado Department of Public Health and Environment C800) 886-7689 Reporting required for spills impacting surface water or for reportable quantity spills of CERCLA hazardous substances. US EPA (800) 227-8917 Reporting required for spills impacting surface water or for reportable quantity spills of CERCLA hazardous substances. National Response Center Clean Harbors (800) 424-8802 (406) 370-6595 Reporting required for spills impacting surface water or for reportable quantity spills of CERCLA hazardous substances. A commercial spill clean-up and response contractor Due to the nature of this being a midstream facility, any emergency will necessitate Kerr-McGee personnel to respond to the issue and resolve with our standard company protocol. Kerr-McGee has trained personnel available 24/7 to respond to incidents and engage local officials as appropriate. Kerr- McGee/Anadarko's Integrated Operations Center provides 24/7 monitoring and emergency response that number is 1-866-504-8184. In any case the following personnel at Anadarko can be reached if necessary: Paul Schneider HSE Manager 1099 18th St, Suite 600 Denver, Co 80202 (720) 929-6726 office (303) 868-6665 mobile Patrice Barnett — HSE Representative H 501 N. Division Blvd Platteville, CO 80651 (970) 515-1332 office (720) 325-3429 mobile Jeff Jones — Sr Staff EHS Representative 501 N. Division Blvd Platteville, CO 80651 970-515-1421 office 307-262-2899 mobile 6. Emergency Response: Emergency response is taken very seriously. To prepare for the unlikely event of an emergency, annually KMGG communicates and plans with local emergency responders. Upon the notification of an incident or leak, KNIGG will immediately dispatch trained personnel to work with emergency responders. All KMGG vehicles are equipped with GPS tracking devices so the operators in the Integrated Operations Center can see at a glance which operator is closest to a potential problem area and dispatch them immediately. There are operators Latham Plant Proposed Natural Gas Pipelines - Emergency Action Plan Section 2, Township 3 North, Range 66 West Weld County, Colorado in the field round the clock so KN4GG personnel arc present and available to respond to emergencies at all times. Emergencies are rare, but should one occur, protection of the public is the KMGG's first priority. Operators arc extensively trained to respond to an emergency appropriately to restore safe conditions for the public and to minimize impacts to the environment. KMGG distributes pipeline information to everyone within 220 yards of our pipelines annually. This information helps the general public know about pipelines, know how to report a pipeline emergency and most importantly to know to call 811 prior to any digging in the area. Line strikes are the leading cause of pipeline incidents. We invite all excavators in the counties in which we operate to an annual meeting to discuss the importance of getting locates on all below ground lines before any construction begins. We are a member of Colorado 811, "One Call System" and proactively encourage its use at all times. Internally, we have a "Red Zone" checklist which requires both our construction supervisor and the contractor working for us to visually clear the area where excavation will be taking place. Where lines are found or suspected, to hydrovac these areas to expose underground utilities. This has dramatically reduced the number of line strikes in the County. Many of our pipelines fall under the regulatory jurisdiction of PHMSA or the Colorado Public Utilities Commission. We are inspected by these agencies regularly for compliance with their construction, maintenance, notification and general safety rules. During these inspections, we sit down with the regulator and review all of our construction and maintenance records. We report information such as pipe diameter, installation year, leaks and integrity information on our regulated pipelines annually. 7. Pipeline Dust/Weed Control: The Conditions of Approval and Development Standards will also ensure that there is no fugitive dust or erosion at the location, and will also ensure the control of noxious weeds. KMGG has a water pipeline on location that can be used to employ water to trucks to spray the nearby roads as well as pipeline corridors during construction. Best Management Practices (BMPs) will be implemented for all construction areas, including erosion control methods and dust suppression. Kerr McGee has developed the Stormwater Management Plan [SWMP] to provide mitigation measures to be followed during construction and operation of the pipeline; and the impacted area will be stabilized by reseeding and if necessary, installing permanent erosion controls as quickly as possible following final grading. Latham Plant Proposed Natural Gas Pipelines - Emergency Action Plan Section 2, Township 3 North, Range 66 West Weld County, Colorado VI. EMERGENCY INFORMATION SHEET 1. General Information: The purpose of this document is to provide ownership information case of emergency. It may be used by outside agencies, company employees, and contract labor to help secure a speedy recovery from such emergency situations: a. Name and Address: Kerr-McGee Gathering, LLC 1099 18th St, Suite 1800 Denver, CO 80202 i Type of Facility: Processing Facility c. Location and Access: Part of the southeast quarter of section 2, Township 3 North, Range 66 West. 6th P.M. All proper warning signs and equipment guards rill be installed. 2. Emergency Contact List: The following is a list of KMG/APC personnel and organizations that may be contacted in the event an emergency occurs at the facility. Due to the nature of this being a midstream facility, any emergency will necessitate KMGG personnel to respond to the issue and resolve with our standard company protocol. KMGG has trained personnel available 24/7 to respond to incidents and engage local officials as appropriate. KMGG/APL's Integrated Operations Center (IOC) provides 24 hours a da.y/7 days a week monitoring and emergency response that number is 1-866-504-8184. In any case the following personnel at APC can be reached if necessary: I NIGG and APC - Emergency Contact List: Contact I Phone Number I Notes Anadarko Integrated and Kerr-McGee Operating Center (IOC) (970) 339-1020 (866) 504-8184 24/7 Number Emergency Response Shane _, Director ctor s -General Operations (720)929-7226 - o (307)680-8670-m Drilling operations. erations. and completion Fross Rex S echt p - erat]�ons p' Advisor (720) 929-6246 - o (303) 241-3582 - m Production Operations and Midstream Neil J. Labbe ' (970) 515-1266 - o Gathering and compression Production Superintendent p (9 70) 0 397-0431 - m erati P operations ons Randy Lavalleur (303) 655-5376 - o Production Superintendent Superintendent (303) 815-8247 - m Plant operations Charles Chase, (970)515-1176-0 Sr. HSE Representative(307) 399-3911 - rn ldstram operations. Rick Staff Morrish HSE Representative (970)515-1157-o (303) 570-4745 — m Midstream operations. Patrice Barnett (303) 655-5310 - o HSE Representative II (970) 515-1332 - m _ - Jeff Jones (970) 515-1421 - 0 Drilling, completion, and production Sr Staff HSE Representative (307) 262-2899 -m operations. Proposed Latham Processing Facility Section 2-T3N-R66W Weld County, Colorado 18 Midstream Emergency Response Contact List: Incident Contact Phone Number Comments injury Platteville- Protection ilcrest785 District 911 or (9 70) -2232 Fire, explosion, serious Fire el herriff d County s Office 911 or (970) 56 401 I COGCC (303) 2100 894- ill or release COGCC ( 3 2100 - impact Reporting oil, exceeding outside produced required 5 containment, water, bbl in or for or containment ground spills E&P or all of crude waste or spills 1 bbl that surface of water Platteville-ilcrest Protection District 911 or 785-2232 Reporting surface p spills substances. required water of CERCLA or for for spills reportable hazardous impacting quantity Fire Colorado of Environment Public De Health p ent and (800) 886- 7689 Reporting surface spills p substances. required water of CERCLA or for for reportable hazardous spills impacting quantity US8917 EPA (800) 227- Reporting surface spills substances. required water of CERCLA or for for reportable hazardous spills impacting quantity N Center Clean atonal • Harbors Response onse (800)424- 880 40 X70- 659 Re surface spills substances. A response commercial P ortin g re water of CERCLA contractor uq ired or for spill for reportable hazardous clean-up s ills p" im paetg quantity and Proposed Latham Processing Facility Section 2-T3N-R66W Weld County, Colorado 19 Sound Mitigation Plan Anadarko Petroleum is committed to the community and their needs, as such we are proposing the following items in an effort to minimize any additional noise impact from the proposed Latham Gas Plant All plant compressors have been designed to be enclosed in insulated metal buildings and are electrically driven. This will eliminate typical engine or exhaust noise and minimize the contributing noise from the compressor frame. As a key part of the design basis for the plant, we have identified Weld County Noise requirements and are committed through sound engineering practice to minimize any impact of incorrectly sized equipment, contributing to high gas velocity and consequential noise levels. In addition we are proposing to erect a 25' sound wall, minimizing noise pollution outside of the proposed facility boundary. In an effort to baseline the current noise levels of the area and assist us in the in the mitigation design, we have taken noise readings in the vicinity of the plant's proposed location. This report's findings can be provided if needed. Visual Mitigation Plan In an attempt to minimize the visual impacts of the proposed gas plant for the surrounding community, we will be erecting a 25' sound wall that is aesthetically matching the soundings. We will also be matching the color scheme of the facility to the BLM standard, Carlsbad Canyon Tan. Light Mitigation Plan Anadarko recognizes the lighting that is necessary for the safe operation of the plant is also a visual annoyance to the surrounding community. To assist alleviating this issue, Anadarko proposes the following action plan. First and foremost, it is recognized that the light design basis will minimize the required lighting to the extent that the plant can be safely operated during normal or upset conditions. To help define these lighting requirements, we have designed in two separate categories: 1. ESSENTIAL Lighting System — Dusk -to -dawn lighting that provides a lower level of illumination, but meets requirements for personnel safety, plant security, and basic operation of the plant. This will be low elevation lighting along foot paths and common accessed areas. 2. DEMAND Lighting System — Plant -operator -switched lighting that provides for increased illumination on an area -by -area basis to provide for nighttime work activities as required. Otherwise, Demand Lighting System will only be energized when needed. All lighting will be engineering utilizing industry standards and aspects of the "dark sky" outdoor lighting standard to avoid excessive illumination. Light fixtures will be specified and installed to minimize outward light pollution. This will be accomplished with directional LED fixtures, fixtures aimed downward, fixtures equipped with glare shields, as well as other common and accepted light mitigation fixture installation strategies listed within the design basis. The final piece of light mitigation Anadarko proposes has been previously mentioned, the 25' sound wall. The defined Essential lighting system will largely include ground level, directional lighting. The wall will provide additional obstruction to any undue light pollution. Communications Plan Anadarko/Kerr McGee has a Stakeholder Relations team dedicated to assisting community members with concerns or questions. This team is committed to providing the following communication during all phases of permitting, construction and operations. As part of the proposed Communications Plan staff is available for meetings upon request as well. • Anadarko Colorado Response Line • Notifications of upcoming activites • Quarterly Check -in Meetings • On-line Portal — Expected to be operational by end of Ca. Anacizarlea Colorado Response Line �I ent866.248.9577 anadarkocalorado @anadar a.com Proposed Communication Timeline • Permitting Phase Application Submittal Planning Commission Hearing date o Board of County Commissioners Hearing date • Construction Phase o Commencement of Construction • Commissioning Phase o Introduction for when natural gas is introduced to the facility * Operations Phase o Stakeholder Relations Team/Anadarko Colorado Response Line — 866-248-9577 o Integrated Operations Center (IOC, Platteville, CO 970-506-5980 ■ Real-time remote monitoring of the facility • Staffed 24/7/365 • Immediately pinpoints issues associated with field alerts and alarms • Enhances collaboration with local emergency response agencies DRAINAGE REPORT REVIEW CHECKLIST Project Name: USR18-0019 Latham Gas Plant The purpose of this checklist is to provide the applicant's Engineer a basic list of items that County Staff will review in regards to a drainage report. The drainage design shall meet the requirements of the Weld County Code and commonly accepted engineering practices and methodologies. A detention pond design (or other stormwater mitigation design) is appropriate for projects which have a potential to adversely affect downstream neighbors and public rights -of -way from changes in stormwater runoff as a result of the development project. The design engineer's role is to ensure adjacent property owners are not adversely affected by stormwater runoff created by development of the applicant's property. REPORT (X = complete, ❑ = required) • Stamped by PE, scanned electronic PDF acceptable ❑ Certification of Compliance ❑ Variance request, if applicable Description /Scope of Work Number of acres for the site 70 acre gas plant, 3.45 acre substation ❑ Methodologies used for drainage report & analysis Design Parameters xl xl xi Design storm 10 year/100 year ❑Release rate URBANIZING or NON -URBANIZING ❑ Overall post construction site imperviousness Soils types Need corresponding maps Discuss how the offsite drainage is being routed Conclusion statement must also include the following: ❑ Indicate that the historical flow patterns and run-off amounts will be maintained in such a manner that it will reasonably preserve the natural character of the area and prevent property damage of the type generally attributed to run-off rate and velocity increases, diversions, concentration and/or unplanned ponding of storm run-off for the 100 -year storm. ❑ How the project impacts are mitigated. Construction Drawings ❑ Drawings stamped by PE, (scanned electronic PDF preferred) Drainage facilities ❑ Outlet details ❑ Spillway Maintenance Plan ❑ Frequency of onsite inspections ❑ Repairs, if needed ❑ Cleaning of sediment and debris from drainage facilities El Vegetation maintenance ❑ Include manufacturer maintenance specifications, if applicable Comments: Onsite ditches designed @ 10 year — are there any that will impede ingress and egress @ 100 year storm Supporting calculations required Culvert capacity is determined by the inlet type — reference code 23-12-60.B.2 xl xi ■ ■ 4/11/2018 Weld County Department of Public WorksI Development Review 1111 H Street, Greeley, CO 80631 I P h : 970-400-3750 I Fax: 970-304-6497 www.weldgov.com/departments/public_worksidevelopment_review/ Samuel Engineering We Provide Solutions 8450 East Crescent Parkway, Suite 200 Phone: 303.714.4840 Greenwood Village, CO 80111 FAX: 303.714.4800 Anadarkp Petroleum Corporation FINAL DRAINAGE REPORT For LATHAM 200 MMSCFD GAS PROCESSING PLANT LOTS B, RECORDED EXEMPTION 1211-2-1, REX13-0096 LOCATED IN THE NORTH 1/2 OF SECTION 2, TOWNSHIP 3 NORTH, RANGE 66 WEST, 6TH PRINCIPAL MERIDIAN, COUNTY OF WELD, STATE OF COLORADO PREPARED FOR: ANADARKO PETROLEUM COMPANY 1099 18th STREET, SUITE 16000 DENVER, COLORADO 80202 PREPARED BY: SAMUEL ENGINEERING, INC. 8450 EAST CRESCENT PARKWAY, SUITE 200 GREENWOOD VILLAGE, CO 80111 ISSUED FOR USR PERMIT USR18-O019 Samuel Engineering We Provide Solutions 8450 E. Crescent Parkway, Suite 200 Greenwood Village, Colorado 80111 Originator/Lead Engineer: Project Engineer Approval: Project Manager Approval: Client Approval: FINAL DRAINAGE REPORT CE -101 Latham Gas Plant Project Number 17128-01 Mark Skelskey Date: Date: Date: Date: Phone: 303-714-4840 Fax: 303-714-4800 05/15/2018 Rev. No. By Revisions Approval Date A MAS Issued for USR18-0019 05/15/18 Engineering ♦ Project Controls ♦ Estimating ♦ Construction Management Samuel Engineering Wo Provide So'ution& ANADARKO PETROLEUM CORPORATION LATHAM GAS PLANT FINAL DRAINAGE REPORT AND PLAN CERTIFICATION "I, Mark Skelskey, Consultant Engineer for Anadarko Petroleum Corporation, understand and acknowledge that Anadarko is seeking land use approval of USR18-0019 for the property described in the attached Exhibit "1." I have designed or reviewed the design of the Latham Gas Plant for the proposed land use set forth in the Application. I hereby certify, on behalf of Applicant that the Design will meet all applicable drainage requirements of the Weld County Code. This certification is not a guarantee or warranty either expressed or implied." Mark A. Skelskey Registered Professional Engineer State of Colorado No. 39396 1.0 Samuel Engineering {fie Prcvide 5oMivrhn Table of Contents EXECUTIVE SUMMARY inwymmentemsninesnsmwyne*rsentemsnimismwmwygnmewygionemosnuniyg.mse 1 1.1 GENERAL LOCATION AND DESCRIPTION ..... Of...44 4...444 le 1 14111 DESCRIPTION OF PROPERTY �:_:_ 2 141.42 METHODOLOGIES 2 1.143 DESIGN PARAMETERS 3 11.4 BASIN DESCRIPTIONS ..1114.40104.011.04111.4.114•.•0104...11114111.*1141. 101.4.11040411..411. 1110.011104011*1*1145161.011 141.5 DRAINAGE FACILITIES ... .1.II 4 1.2 OFFSITE DRAINAGE ROUTING 4444.0.444.4.444...144.4444.41444.4. tit ...144...444.041444.4.tit ....14/0000040 5 1.3 CONCLUSION444...44 Vie .4.444 444 444 414 444.4444.14 444 444 444 414 444.4.4441.1.44444044-4.44444.44444444444 2.0 CONSTRUCTION DRAWINGSwwlwwwwwwwwwwwwwwwwwww•UURIiIP•IIUUii11I*iti•I6wlwu* 0.1011 Oita MOO *IUIIIIUIUI*IIIU•IUIU S 3.0 APPENDICES SIPOOMOOPIWOMPOOMIP•M•ellieneltielie•OlfigrnelillielOOSOIP•Maille•0•06110,009,0160•Maille•0•0001,00,60 ii ANADARKO LATHAM GAS PLANT PROJECT NUMBER: 17128-01 CE -1W1 FINAL DRAINAGE REPORT REV. A, 05-15-2018 PAGE 1 of 9 1.0 EXECUTIVE SUMMARY This document has been prepared for providing calculations and detailing the drainage design for Anadarko Petroleum Corporation's Latham Gas Plant located in Weld County, Colorado. The design will include a extended detention basin (EDB) to reduce the potential to adversely affect any downstream neighbors or county right-of-way's. 1.1 GENERAL LOCATION AND DESCRIPTION The subject project is located in part of the North 1/2 of Section 02, Township 03 North, Range 66 West of the 6th Principal Meridian, County of Weld, State of Colorado. The property address is 16226 Weld County Road 38, Fort Lupton Colorado. The property is located south of County Road 38 and east of County Road 33. No public streets are proposed within the property. Access to the site will be from Weld County Road 35. There are no open channels, lakes, streams or irrigation ditches in the area of the proposed development. The subject property is not located in a floodplain. The surrounding area development consists of a several abandoned buildings previously used for poultry farming, several gas wells, gas piping, a large gas processing plant to the northeast and open ground adjacent to the site. Further to the northwest are four single family residences. hest co 0 P t_r• re - F w_ J CR 38 L J ANADARKO LATHAM PROJECT SITE SEC, 3 SEC. 2 SEC. 1 SECTION LINE (TYP.) ' WCR 36 NORTH tin= 20W) 24° x 36' MEM or - U taL F} Y14wd", ts 7.1 cifV 1ial11uIM Cut -p 1'Y 1lun 1W�L r;ENCAAL ,,1, -;hi-, M -I 1 We toP CQ. l iL.a Sri fl 4iY1®_ 1_i PIM Y LAT+CU09@44 .t. Exhibit 1 — Vicinity Map I - `r p Samuel Engineering Prewhict 5ululdorrs ANADARKO LATHAM GAS PLANT PROJECT NUMBER: 17128-01 CE -1W1 FINAL DRAINAGE REPORT REV. A, 05-15-2018 PAGE 2 of 9 1.1.1 DESCRIPTION OF PROPERTY The property is owned by Anadarko Petroleum and is a 239.91 -acre lot of which 70 -acres will be used for the proposed gas processing plant and an additional 3.45 -acres will be used for an electrical substation. The remaining 166.46 -acres will remain mostly undisturbed except for a 2500 linear foot access road to the site. The access road will be along the alignment of an existing two track road used for access to existing well pads. The road will be widened to accommodate plant construction and operations traffic. The undeveloped portions of the property are primarily vacant, un-irrigated pasture land with no trees. The ground cover consists mainly of prairie grasses and weeds. Topographic relief over the property ranges from 4908' to 4852' in elevation and is characterized by mostly flat grades that typically range from 0.5% to 3%. Some isolated areas on the western side of the site can approach 9% slopes. The subject property is not located in a floodplain per Firm panel 08123C1950E. FEMA Classifies this area as an "area of minimal flood hazard". See Exhibit 2 There are no open channels, lakes, streams or irrigation ditches in the area of the proposed development. The surrounding area development consists of a several abandoned buildings previously used for poultry farming, several gas wells, gas piping, a large gas processing plant to the northeast and open ground adjacent to the site. Further to the northwest are four single family residences. Historic stormwater flows are generally in an east and northeast direction across the parcel. The flows then follow roadside ditches before heading north into open fields. Ultimately the receiving waters are the Platte Valley Ditch and eventually the South Platte River. 1.1.2 METHODOLOGIES The drainage concepts and designs have been completed in accordance with the guidelines Weld County Storm Drainage Criteria. No deviations from the Criteria were used in development of this drainage study. Other references used in developing this report include the Urban Drainage Criteria Manuals. The rational method was used to calculate peak runoff for the property. Excel spreadsheets from UDFCD were used to calculate peak runoff, WQCV, Detention pond 10-yr and 1.00-yr storage volumes and WQCV 40 hour release quantities. Bentley Flow Master was used to calculate culvert sizes, ditch capacities, orifice openings and weir sizing. Excel spreadsheets were used to crosscheck detention pond capacities, rip -rap sizing and Impervious values. Detention pond volumes, maximum discharge rates and WOO/ were calculated using UDFCD Detention Basin Volume Estimating Workbook, Version 2.35, released January 2015 using the modified FM method. Samuel Engineering Firrovtdd 5ululdorrs ANADARKO LATHAM GAS PLANT PROJECT NUMBER: 17128-01 CE -1W1 FINAL DRAINAGE REPORT REV. A, 05-1S-2018 PAGE 3 of 9 Wherever possible offsite flows are directed around the proposed development and returned into the natural flow patterns. 1.1.3 DESIGN PARAMETERS Design Rainfall - The design rainfall for the site was found within the NOAA Atlas 14, Volume S for Platteville Colorado. The design reoccurrence rainfall intensities for this project have been established as the 10 -year and 100 -year one -hour storm events. The 10 and 100 -year values used for this project are 1.39 and 2.71 inches per hour respectively. See Appendix 1 Release Rate - The project site is located within a Weld County defined Non -Urbanizing Drainage Area. The detention pond will be designed to contain the 1 -hour, 100 -year storm event and release of the detained water will be at the historic runoff rate of the 1 -hour, 10 -year storm falling on the undeveloped site. The maximum release rate for this project has been established as 12.21 cfs. See Appendix 4 Overall Post Construction Site Imperviousness —The impervious value for this site has been established as 40.56 efs. This Impervious value takes into consideration, proposed buildings, outdoor equipment, access roads with recycled asphalt surfacing, site gravel and landscaping restoration. See Appendix 2 Soils Types: There are three (3) soil types present, Valent sand (USC rating SP-SM) as the most predominant, Vona loamy sand (Also USC rating SM) and Olney loamy sand (USC rating SM), Valent sand (USC rating SP-SM) being the smallest area. Soils in the project area have a hydrologic rating of A. See Exhibits 4 and 5 Culverts — Site culverts range in size from 12- inch to 36 -inch diameter reinforced concrete pipe. All on site piping has been designed for a 25 -year storm event capacity at a minimum. See Hydraulic Calculation, Section 1 Swales— Swales on the site are designed to channel storm water away from equipment and access roads. All swales are designed to convey a 10-yr storm event at a minimum. See Hydraulic Calculation, Section 2 Detention Fond — The detention pond maximum height from the pond bottom to the spillway elevation is 6.55 -feet. The detention pond 100 -year design capacity is 7.228 acre-feet and this Samuel Engineering Wt Prarkki 5ufu11orr$ ANADARKO LATHAM GAS PLANT PROJECT NUMBER: 17128-01 CE -1W1 FINAL DRAINAGE REPORT REV. A, 05-15-2018 PAGE 4 of 9 volume will be reached at the 100 -year water surface elevation, 4864.95. The pond capacity at the spillway, elevation 4865.25, is 7.79 acre-feet. The freeboard elevation is 4866.25. 1.1.4 BASIN DESCRIPTIONS The subject property is not part of the weld County Master Drainage Plan. 1.1.5 Predevelopment flows from the site travel northeast along the Platte Valley ditch system, then along the Union Ditch and ultimately the South Platte River. Post development flows will follow the same patterns. Major Basin - The site currently does not have drainage improvements. Storm water sheet flows across the site from the southwest to the northeast draining onto the existing vegetation. The major basin that is tributary to the project site is 158 acres, more or less, and has predeveloped flows of 26.15 cfs for the 10 -year storm event and 159.66 cfs for the 100 -year storm event. See Appendix 3 The pre -developed sub -basin tributary to the detention pond has a total area of 70.2 -acres with predeveloped flows of 12.21 cfs, this will be the maximum discharge for the 100 -year storm event from the detention pond. See Appendix 4 The developed sub -basin tributary to the detention pond has a total area of 70.2 -acres with developed flows of 53.68 cfs for the 10 -year storm event and 141.94 cfs for the 100 -year storm event. See Appendix 5 DRAINAGE FACILITIES The detention pond will include two fore bay controls located at the two entrances to the pond and a micropool located at the front side of the outlet structure. The detention pond outlet structure is a CDOT type D standard inlet with two CDOT standard inlet grates. The outlet structure controls the Waal for the 40 -hour drain time with the use of an orifice plate and debris screen with six 1.65 -inch circular holes. The calculated 10 -year discharge rate for the pond is 9.13 cfs and will be controlled with a 8 -inch tall x 18 -inch wide rectangular orifice as part of the outlet structure. The outlet structure discharge pipe is a 24 -inch RCP with a 1.92 -foot diameter orifice plate to control the maximum allowable discharge flow of 12.21 cfs. The outlet pipe will be constructed with two concrete cutoff walls surrounded by compacted native soil fill. Samuel Engineering Wt Prnvt 50!WANES ANADARKO LATHAM GAS PLANT PROJECT NUMBER: 17128-01 CE -1W1 FINAL DRAINAGE REPORT REV. A, 05-15-2018 - PAGE 5 of 9 A. spillway to control stormwater flows greater than the 100 -year storm event will be constructed on the northern berm of the detention pond. The spillway will include a concrete cutoff wall/weir 146.25 foot in length with an additional S -feet on each side. This weir will be installed on the pond side of the spillway at a width of 8 -inches minimum. Type M rip rap two- feet deep buried with 6 -inches top soil and native seed will be installed from the weir to the toe of slope for erosion protection. The velocity at the 24 -inch pond discharge pipe has been calculated at 5.77 cfs and will require a low tailwater rip rap basin at the pipe exit point, design point 1. Maintenance access for the detention pond has been provided and is shown on the detention pond drawings. The detention pond does not darn water in excess of 10 -ft, therefore there is no jurisdictional darn and no permit was filed with CDPHE. H E. 1.2 OFFSITE DRAINAGE ROUTING Wherever possible offsite flows are directed around the proposed development and returned into the natural flow patterns. Due to existing topography and site grading, interceptor ditches are not necessary as stormwater will follow the current patterns around the site into the natural flow patterns. 1.3 CONCLUSION Historical Flow Patterns Maintained - This drainage study has been designed to convey developed flows through an extended detention basin detention pond designed with controlled discharge rates for the minor and major storms. The flows then travel through established drainage ways in a manner consistent with the predevelopme nt drainage patterns. With a properly constructed and maintained pond along with the proposed erosion control measures this development will not adversely impact the existing drainage or existing downstream developments 2.0 CONSTRUCTION DRAWINGS Construction drawings are submitted as a separate document. Samuel Engineering Firrovtdd 5ululdorrs ANADARKO LATHAM GAS PLANT PROJECT NUMBER: 17128-01 CE -1W1 FINAL DRAINAGE REPORT REV. A, 05-1S-2018 PAGE 6 of 9 3.0 APPENDICES A. Hydrology Calculations Precipitation Frequency Estimates 2. Area Weighted Impervious values Historic Major and Minor Storm Runoff Calculations - Major Basin Historic 10 -Year Storm Runoff Calculations Tributary to Detention Pond 5E Developed Major and Minor Storm Runoff Calculations —Tributary to Detention Pond Samuel Engineering Wt Prarkki 5ufu11orr$ Precipitation Frequency Data Server Page 1 of 3 NOAA Atlas 14, Volume 8, Version 2 Location name: Platteville, Colorado, USA* Latitude: 40.2564°, Longitude: -144.7459° Elevation: 4886.72 ft** *source: ESRI Maps *i source: USGS POINT PRECIPITATION FREQUENCY ESTIMATES Sanja Perica, Deborah Martin, Sandra Pa.vlovic, Ishani Roy, Michael St. Laurent, Cad Trypaluk, Dale Unruh, Michael Yekta, Geoffery Bonnin NOAA, National Weather Service, Silver Spring, Maryland PF tabular I PF graphical I Maps & aerials PF tabular PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches)1 Duration 5 -min Average recurrence interval (years) r 1 0.239 (0.192-0.299) 10 -min r 0.350 (0.282-0.437) 115 -min 30 -min 0.426 (0.344-0.533) 0.572 (0.461-0.716) 60 -rein 0.707 (0.570-0.885) 2 -hr 0.842 (0.684-1.04) 3 -hr 0.921 (0.752-1.14) 6 -hr 12 -hr 24 -hr 2 -day 3 -day 4 -day 7 -day 10 -day 20 -day 30 -day 45 -day 60 -day 1.08 (0.887-1.32) 1.27 (1.05-1.53) 1.51 (1.26-1.81) 1.72 (1.45-2.04) 1.88 (1.60-2.22) 2.01 (1.71-2.36) 2.30 (1.97-2.68) 2.54 (2.19-2.95) 3.24 (2.81-3.72) 3.80 (3.31-4.34) 4.47 (3.92-5.07) 5.01 (4.41-5.66) 2 0.289 (0.233-0.362 0.423 (0.341-0.530) 0.516 (0.415-0.646 0.690 (0.555-0.864 0.841 (0.677-1.05) , 0.992 (0.805-1.23) 1.07 (0.875-1.33) 1.25 (1.03-1.53) 1.49 (1.24-1.81) 1.77 (1.48-2.13) 2.06 (1.73-2.44) 2.22 (1.88-2.62) 2.35 (2.00-2.77) 2.68 (2.29-3.13) 2.96 (2.55-3.44) 3.74 (3.24-4.29) 4.36 (3.80-4.98) 5.13 (4.49-5.82) 5.78 (5.08-6.53) 5 0.386 (0.310-0.485 0.566 (0.454-0.711 0.690 (0.553-0.867 0.921 (0.738-1.16) 1.11 (0.893-1.40) 1.31 (1.06-1.63) 1.40 (1.14-1.74) 1.62 (1.32-1.98) 1.93 (1.59-2.34) 2.26 (1.88-2.72) 2.64 (2.21-3.14) 2.81 (2.37-3.33) 2.95 (2.49-3.47) 3.33 (2.84-3.90) 3.67 (3.14-4.26) 4.55 (3.93-5.23) 5.27 (4.57-6.03) 6.19 (5.40-7.04) 6.99 (6.12-7.92) 10 0.481 (0.383-0.608 0.705 (0.561-0.890 0.860 (0.685-1.09) 1.15 (0.914-1.45) 1.39 (1.11-1.75) 1.63 (1.31-2.04) 1.75 (1.41-2.17) 2.00 (1.62-2.46) 2.35 (1.93-2.86) 2.72 (2.25.3.29) 3.15 (2.63-3.77) 3.33 (2.79-3.96) 3.47 (2.92-4.11) 3.89 (3.30-4.57) 4.26 (3.62-4.97) 5.21 (4.47-6.03) 6.00 (5.18.6.90) 7.04 (6.10-8.04) 7.95 (6.92-9.05) 25 0634 (0.495-0.859) 0.928 (0.724-1.26) 1.13 (0.883-1.53) (1. 1.51 18-2.05) 1.84 (1.45-2.52) (1. 2.18 73-2.95) 2.34 (1.87.3.16) 2.64 (2.12-3.52) 3.02 (2.43-3.93) 3.43 (2.77-4.38) 3.91 (3.16-4.89) 4.10 (3.33-5.09) 4.24 (3.46-5.25) 4.69 (3.85-5.73) 5.09 (4.18-6.15) 6.12 (5.06-7.29) 7.00 (5.81-8.26) 8.17 (6.81-9.57) 9.22 (7.71-10.7) 50 0.768 (0.579-1.05) 1.12 (0.847-1.54) 1.37 (1.03-1.87) 1.84 (1.38-2.51) 2.25 (1.70-3.09) 2.67 (2.04-3.64) 2.88 (2.21-3.90) 3.23 (2.50-4.32) 3.61 (2.81-4.74) 4.04 (3.16-5.21) 4.53 (3.56-5.74) 4.72 (3.73-5.95) 4.87 (3.87-6.10) 5.34 (4.26-6.60) 5.74 (4.60-7.05) 6.82 (5.51-8.24) 7.75 (6.29-9.29) 9.01 (7.35-10.7) 10.2 (8.31-12.0) 100 J 0.917 (0.663-1.29) 1.34 (0.970-1.88) 1.64 (1.18-2.30) 2.19 (1.59-3.08) 2.71 (1.97-3.82) 3.23 (2.37-4.51) 3.49 (2.57-4.85) 3.89 (2.89-5.34) 4.27 (3.19-5.75) 4.70 (3.53-6.22) 5.18 (3.92-6.74) 5.38 (4.10-6:95) 5.54 (4.23-7.12) 6.00 (4.62-7.61) 6.41 (4.95-8:06) 7.52 (5.86-9.31) 8.49 (6.65-10.4) 9.83 (7.74-12.0) 11.1 (8.73-13.4) 200 1.08 (0.745-1.56) 1.59 (1.09-2.29) 1.93 (1.33-2.79) 2.60 (1.79-3.76) 3.23 (2.23-4669) 3.87 (2.70-5.56) 4.19 (2.94-5.99) 4.65 (3.30-6.56) 5.00 (3:56-6.92) 5.42 (3.89-7.38) 5.88 (4.25-7.87) 6.09 (4.43-8.09) 6.24 (4.56-8.25) 6.69 (4.93-8.74) 7.09 (5.24-9.18) 8.22 (6.13-10.5) 9.23 (6.92-11.7) 10.6 (8.02-13:3) 11.9 (9.02-14.8) 500 1.33 (0.871-1.97) 1.94 (1.27-2.88) 2.37 (1.56-3.52) 3.19 (2.10-4.74) 4.00 (2.63-5.96) 4.82 (3.21-7.11) 5.24 (3.51-7.68) 5.78 (3.91-8.37) 6.06 (4.13-8.63) 6.46 (4.44-9.05) 6.85 (4.75-9.44) 7.07 (4.93-9.66) 7.23 (5.07-9.84) 7.65 (5.40-10.3) 8.02 (5.69-10.7) 9.14 (6.54-12.0) 10.2 (7.34-13.2) 11.7 (8.45-15.0) 13.0 (9.46-16.6) 1000 1.53 (0.966-2.28) 2.23 (1.41-3.33) 2.73 (1.73-4.07) 3.68 (2.33-5.48) 4.64 (2.94-6.93) 5.61 (3.59-8.28) 6.12 (3.94-8.96) 6.73 (4.38-9.74) 6.94 (4.56-9.92) 7.30 (4.86-10.3) 7.62 (5.12-10.6) 7.85 (5.31-10.9) 8.02 (5.45-11.0) 8.39 (5.76-11.4) 8.73 (6.02-11.8) 9.83 (6.86-13.1) 10.9 (7.66-14.4) 12.4 (8.77-16.3) 13.8 (9.79-18.0) 1 Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS). Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates (for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds are not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values. Please refer to NOAA Atlas 14 document for more information. Back to Top https://hdsc.nws.noaa.go /hdsc/pfds/pfds rintpage.httnl?lat=40.2564&lon=-104.7459&data=depth units=english&series=psis 2/16/2018 Precipitation Frequency Data Server Page 2 of 3 PF graphical PBS -based depth -duration -frequency (ODE) curves I =Itrt��. $r �1i1 2561[ f nnnrtoertlnl• _lfd 7AcoI l tataLJYY•. 'usa, .J'Y s 1 L. u. IW�'aj aJ".- ■• • 'I �I I' s • c Q re 1.4 6 4 2 14 22 10 6 4 2 1 • • • • • • • • • • • • • • • .• • . a • a . • • • • ,a a 1 2 5 10 25 50 100 .200 NOAA Atlas 14, Warne 8., Version 2 I • C I • i • 1 J ! S a drizi • • 66 • • Y Duration I 4 ▪ • • r.L aMliY.\\•—.•r . I I I IS_I' 13 t V 4- I I ,ierseer.....)9/11 . . 1 m 1t MI It L - - 300. 1000 Average recurrence interval i(years) Created (GMT) Fri Feb 1611-4®.338 2011 Back to Top Maps & aerials Small scale terrain Averages recurrence irulervaM (years,) 1 2 5 10 25 50 100 200 500 1000 Ow atcin 5 -ire TO -man isoun �Y �t•7P '1 Gamin 2 --hr 341 1hr tMe 24 -hr 2 -day 3+ Lay ay I ., 1O -day 2D -day day 45aday neatly https://hdsc.nws.noaa.gov/hdsc/pfds/pfds printpage.httnl?lat=40.25644'don=-104.7459&data=depth&units=english&series=Pis 2/16/2018 AREA WEIGHTED IMPERVIOUSNESS VALUES ANADARKO LATHAM GAS PLANT COUNTY ROADS 35 & 38 WELD COUNTY COLORADO HISTORIC CONDITIONS Surface Characteristic Basin 1 A, acre I, % Al Undeveloped 70.20 2 140.4 Atatah acre v weighted' v 70.20 2.0 DEVELOPED CONDITIONS TRIBUTARY TO DETENTION POND Surface Characteristic Basin 1A A, acre I, % Al Roofs Equipment Pads Recycled Asphalt Gravel Surface/Roadbase rface/Roadbase Bare Ground Undeveloped/ Restored 1.38 4.85 5.81 31.28 13.61 13.27 Atatai, acre I wei gh ted' % 90 90 80 40 40 2 124.20 436.50 464.80 1251.20 544.40 26.54 70.20 40.56 Table RO-3—Recornniended Percentage Imperviousness Values Land Use or S$1a a Characieristihs Percentage mperi aasfrss 3 asirless: Corrrnercial areas 95 fsieichhorhP . areas as Resident a : 32 ig a-. aMily s "Ault -unit detached 1 ec Ault -unit N;ahaohed;: 77 Half -acre lot or larger s A3J^rrents 0 20 Indus aria Lg"i areas 20 Healey areal 90 5., cemeteries it Paygrouncs 10 ZazhDols t50 ailroad yard areas 15 Undeveloped Areas: Historic - flew anal is 2 .3rebel7e agrid'Jltmn ri r: !Off -site flow analys.s :*+hen land ase nct del ried: 45 -Sleets: Paved 1 it i 'Gravel i:paoiced) 40 Drive- and wa ks 90 Roofs gie Lawns,. sway soil D .1...awns. clayey soil it ;am Figures. R0-3 through RD -b far percentage inperscr�sness_ CALCULATION OF A PEAK RUNOFF USING RATIONAL METHOD Project Title: Catchment ID: Anadarko Latham Gas Plant 10-Yr Pre -Developed Runoff - Major Basin I. Catchment Hydrologic Data Catchment ID = Area = Percent Imperviousness = 1 158.00 2.00 Acres NRCS Soil Type = A A, B, C, or D For catchments larger than 90 acres, CUHP P hydrograph raph and routing are recommended. II. Rainfall Information Design Storm Return Period, Tr = Cl C2= C3= P1= I (inchlhr) = Cl * P1 /(C2 + Td)"C3 10 28.50 10.00 0.786 1.39 years (input return period for design storm) (input the value of C1) (input the value of C2) (input the value of C3) inches (input one -hr precipitation —see Sheet "Design Info") III. Analysis of Flow Time (Tim.e of Concentration) for a Catchment Runoff Coefficient, C = Overide Runoff Coefficient, C = 5-yr. Runoff Coefficient, C-5 = Overide 5-yr. Runoff Coefficient, C = 0.07 0.00 (enter an overide C value if desired, or leave blank to accept calculated C.) (enter an overide C-5 value if desired, or leave blank to accept calculated C-5.) Illustration LEGEND Bcgibming Flew Direction C ate Lament Boundary NRCS Land Type Conveyance Heavy Meadow 2.5 Tillage! Field 5 Short Pasture/ Lawns 7 Nearly Bare Ground 10 Grassed Swales! Waterways Paved Areas & Shallow Paved Swales (Sheet Flow) 15 20 Calculations: Reach ID Slope S ft/ft input Overland 0.0142 1 2 3 4 5 Sum Length L ft input 5-yr Runoff Coeff C-5 output NRCS Convey - a nce input Flow Velocity V fps output 2,819 0.00 N/A 0.50 2,819 IV. Peak Runoff Prediction Rainfall Intensity at Computed Tc, I = Rainfall Intensity at Regional Tc, I = Rainfall Intensity at User -Defined Tc, I = 1.03 2.39 2.39 inchlhr inch/hr inch/hr Computed Tc = Regional Tc = User -Entered Tc = Peak Flowrate, Op = Peak Flowrate, Qp = Flow Time Tf minutes output 93.93 93.93 Peak Flowrate, Op 25.66 25.66 11.28 26.15 cfs cfs 25.15 cfs 10 yr-Major runoff Undeveloped.xls, Tc and Peak() 4/23/2018, 4:14 PM CALCULATION OF A PEAK RUNOFF USING RATIONAL METHOD Project Title: Catchment ID: Anadarko Latham Gas Plant 100-Yr Pre -Developed Runoff - Major Basin I. Catchment Hydrologic Data Catchment ID = Area = Percent Imperviousness = 1 158.00 2.00 Acres NRCS Soil Type = A A, B, C, or D For catchments larger than 90 acres, CUHP P hydrograph raph and routing are recommended. II. Rainfall Information Design Storm Return Period, Tr = Cl C2= C3= P1= I (inchlhr) = Cl * P1 /(C2 + Td)"C3 100 28.50 10.00 0.786 2.71 years (input return period for design storm) (input the value of C1) (input the value of C2) (input the value of C3) inches (input one -hr precipitation —see Sheet "Design Info") III. Analysis of Flow Time (Tim.e of Concentration) for a Catchment Runoff Coefficient, C = Overide Runoff Coefficient, C = 5-yr. Runoff Coefficient, C-5 = Overide 5-yr. Runoff Coefficient, C = 0.22 0.00 (enter an overide C value if desired, or leave blank to accept calculated C.) (enter an overide C-5 value if desired, or leave blank to accept calculated C-5.) Illustration LEGEND Bcgibming Flew Direction C ate Lament Boundary NRCS Land Type Conveyance Heavy Meadow 2.5 Tillage! Field 5 Short Pasture/ Lawns 7 Nearly Bare Ground 10 Grassed Swales! Waterways 15 Paved Areas & Shallow Paved Swales (Sheet Flow) 20 Calculations: Reach ID Slope S ft/ft input Length L ft input 5-yr Runoff Coeff C-5 output NRCS Convey - a nce input Flow Velocity V fps output Flow Time Tf minutes output Overland 0.0142 2,819 0.00 N/A 0.50 93.93 1 2 3 4 5 Sum 2,819 IV. Peak Runoff Prediction Rainfall Intensity at Computed Tc, I = Rainfall Intensity at Regional Tc, I = Rainfall Intensity at User -Defined Tc, I = 2.01 4.65 4.65 inchlhr inch/hr inch/hr Computed Tc = Regional Tc = User -Entered Tc = Peak Flowrate, Op = Peak Flowrate, Qp = 93.93 25.66 25.66 68.87 cfs Peak Flowrate, Op 159.66 cfs 159.66 cfs 100 yr-Major runoff Undeveloped.xls, Tc and Peak() 4/23/2018, 4:21 PM CALCULATION OF A PEAK RUNOFF USING RATIONAL METHOD Project Title: Catchment ID: Anadarko Latham Gas Plant 10-Yr Pre -Developed Runoff Tributary to Pond I. Catchment Hydrologic Data Catchment ID = Area = Percent Imperviousness = NRCS Soil Type = 1 70.20 2.00 A II. Rainfall Information Design Storm Return Period, Tr = Cl C2= C3= P1= Acres A, B, C,orD I (inchlhr) = Cl * P1 /(C2 + Td)"C3 10 28.50 10.00 0.786 1.39 years (input return period for design storm) (input the value of C1) (input the value of C2) (input the value of C3) inches (input one -hr precipitation --see Sheet "Design Info") III. Analysis of Flow Time (Tim.e of Concentration) for a Catchment Runoff Coefficient, C = Overide Runoff Coefficient, C = 5-yr. Runoff Coefficient, C-5 = Overide 5-yr. Runoff Coefficient, C = 0.07 0.00 (enter an overide C value if desired, or leave blank to accept calculated C.) (enter an overide C-5 value if desired, or leave blank to accept calculated C-5.) Illustration LEGEND Beguming Flew Direction Catchment Boundary NRCS Land Type Conveyance Heavy Meadow 2.5 Tillage! Field 5 Short Pasture/ Lawns 7 Nearly Bare Ground 10 Grassed Swales! Waterways Paved Areas & Shallow Paved Swales (Sheet Flow) 15 20 Calculations: Reach ID Slope S ftlft input Overland 0.0202 1 2 3 4 5 Sum Length L ft input 5-yr Runoff Coeff C-5 output NRCS Convey - a nce input Flow Velocity V fps output Flow Time Tf minutes output 2,428 0.00 N/A 0.52 77.62 2,428 IV. Peak Runoff Prediction Rainfall Intensity at Computed Tc, I = Rainfall Intensity at Regional Tc, I = Rainfall Intensity at User -Defined Tc, I = 1.18 2.51 2.51 inchlhr inchlhr inch/hr Computed Tc = Regional Tc = User -Entered Tc = Peak Flowrate, Op = Peak Flowrate, Qp = 77.62 23.49 23.49 Peak Flowrate, Op 5.73 12.21 12.21 cfs cfs cfs 0"% , The Time of Concentration calculated by equation RO-2 (overland time + guttertime) is: 77.62 minutes, The Time of Concentration calculated by equation RO-5 (Total Length ! 1W + 10) is: 23,49 minutes. 10 yr runoff_Undeveloped-Trib2Pond.xls, Tc and Peak() The Time of Concentration recommended by the USDCM is: 23.49 minutes. CALCULATION OF A PEAK RUNOFF USING RATIONAL METHOD Project Title: Catchment ID: Anadarko Latham Gas Plant 10-Yr Developed Runoff Tributary to Pond I. Catchment Hydrologic Data Catchment ID = Area = Percent Imperviousness = NRCS Soil Type = 1 70.20 40.56 A II. Rainfall Information Design Storm Return Period, Tr = Cl C2= C3= P1= Acres A, B, C,orD I (inchlhr) = Cl * P1 /(C2 + Td)"C3 10 28.50 10.00 0.786 1.38 years inches (input return period for design storm) (input the value of C1) (input the value of C2) (input the value of C3) (input one -hr precipitation —see Sheet "Design Info") III. Analysis of Flow Time (Tim.e of Concentration) for a Catchment Runoff Coefficient, C = Overide Runoff Coefficient, C = 5-yr. Runoff Coefficient, C-5 = Overide 5-yr. Runoff Coefficient, C = 0.30 0.25 (enter an overide C value if desired, or leave blank to accept calculated C.) (enter an overide C-5 value if desired, or leave blank to accept calculated C-5.) Illustration LEGEND Bcgruming Flew Direction Catchment Boundary NRCS Land Type Conveyance Heavy Meadow 2.5 Tillage! Field 5 Short Pasture/ Lawns 7 Nearly Bare Ground 10 Grassed Swales! Waterways 15 Paved Areas & Shallow Paved Swales (Sheet Flow) 20 Calculations: Reach ID Overland Slope S ft/ft input Length L ft input 5-yr Runoff Coeff C-5 output NRCS Convey - a nce input Flow Velocity V fps output Flow Time Tf minutes output 0.0146 1,646 0.25 N/A 1 0.0128 622 2 0.0200 85 3 4 5 Sum 2,353 IV. Peak Runoff Prediction Rainfall Intensity at Computed Tc, I = Rainfall Intensity at Regional Tc, I = Rainfall Intensity at User -Defined Tc, I = 1.37 2.51 2.51 inchlhr inch/hr inch/hr 15.00 20.00 0.50 55.06 1.70 6.11 2.83 0.50 Computed Tc = Regional Tc = User -Entered Tc = Peak Flowrate, Op = Peak Flowrate, Qp = 61.66 Peak Flowrate, Op 23.07 23.07 29.23 53.68 cfs cfs 53.68 cfs 10 yr runoff_Developed-Trib2Pond042318.xls, Tc and Peak() 5/12/2018, 2:19 PM CALCULATION OF A PEAK RUNOFF USING RATIONAL METHOD Project Title: Catchment ID: Anadarko Latham Gas Plant 100-Yr Developed Runoff Tributary to Pond I. Catchment Hydrologic Data Catchment ID = Area = Percent Imperviousness = NRCS Soil Type = 1 70.20 40.56 A II. Rainfall Information Design Storm Return Period, Tr = Cl C2= C3= P1= Acres A,B,C, or D I (inchlhr) = Cl * P1 /(C2 + Td)"C3 100 28.50 10.00 0.786 2.71 years inches (input return period for design storm) (input the value of C1) (input the value of C2) (input the value of C3) (input one -hr precipitation —see Sheet "Design Info") III. Analysis of Flow Time (Tim.e of Concentration) for a Catchment Runoff Coefficient, C = Overide Runoff Coefficient, C = 5-yr. Runoff Coefficient, C-5 = Overide 5-yr. Runoff Coefficient, C = 0.41 0.25 (enter an overide C value if desired, or leave blank to accept calculated C.) (enter an overide C-5 value if desired, or leave blank to accept calculated C-5.) Illustration LEGEND Bcgibming Flew Direction Catchment Boundary NRCS Land Type Conveyance Heavy Meadow 2.5 Tillage! Field 5 Short Pasture/ Lawns 7 Nearly Bare Ground 10 Grassed Swales! Waterways 15 Paved Areas & Shallow Paved Swales (Sheet Flow) 20 Calculations: Reach ID Overland Slope S ft/ft input Length L ft input 5-yr Runoff Coeff C-5 output NRCS Convey - a nce input Flow Velocity V fps output Flow Time Tf minutes output 0.0146 1,646 0.25 N/A 0.50 55.06 1 0.0128 622 2 0.0200 85 3 4 5 Sum 2,353 IV. Peak Runoff Prediction Rainfall Intensity at Computed Tc, I = Rainfall Intensity at Regional Tc, I = Rainfall Intensity at User -Defined Tc, I = 2.69 4.94 4.94 inchlhr inch/hr inch/hr 15.00 1.70 6.11 20.00 2.83 0.50 Computed Tc = Regional Tc = User -Entered Tc = Peak Flowrate, Op = Peak Flowrate, Qp = 61.66 23.07 23.07 77.29 cfs Peak Flowrate, Op 141.94 cfs 141.94 cfs 100 yr runoff_Developed-Trib2Pond042318.xls, Tc and Peak() 4/23/2018, 4:29 PM ANADARKO LATHAM GAS PLANT PROJECT NUMBER: 17128-01 CE -1W1 FINAL DRAINAGE REPORT REV. A, 05-15-2018 PAGE 7 of 9 B. Hydraulic Calculations 1. Peak Runoff Calculations for Culverts 2. Swale Capacity Computations Detention Pond 10-yr and 100-yr Volume Calculations 4. Stage Storage Calculations S. Detention Pond WOG/ Calculations — WQCV Orifice Sizing Calculations E. Detention Pond 10 -Year Orifice Calculations 7 Outlet Pipe Circular Orifice Calculations 8. Detention Pond Overflow Weir Calculations Samuel Engineering Wt Prarkki 5ufu11orr$ 12 -inch RCP Capacity► Project Description Friction Method Solve For Manning Formula Discharge Input Data Roughness Coefficient Channel Slope Normal Depth Diameter 0.013 0.00500 ft/ft 0.88 ft 1.00 ft Results Discharge Flow Area Wetted Perimeter Hydraulic Radius Top Width Critical Depth Percent Full Critical Slope Velocity Velocity Head Specific Energy Froude Number Maximum Discharge Discharge Full Slope Full Flow Type SubCritical 2.65 ft3/s 0.73 ft2 2.42 ft 0.30 ft 0.66 ft 0.70 ft 87.5 °lo 0.00795 ft/ft 3.63 ft/s 0.21 ft 1.08 ft 0.61 2.71 ft3/s 2.52 ft3/s 0.00552 ft/ft GVF Input Data Downstream Depth Length Number Of Steps 0.00 ft 0.00 ft 0 GVF Output Data Upstream Depth Profile Description Profile Headloss Average End Depth Over Rise Normal Depth Over Rise Downstream Velocity 0.00 ft 0.00 ft 0.00 °/Q 87.50 cyo Infinity ft/s Bentley Systems, Inc. Haestad Methods SoBithile5tEldwfMaster V8i (SELECTseries 1) [08.11.01.03] 5/16/2018 10:22:46 AM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 1 of 2 12 -inch RCP Capacity GVF Output Data Upstream Velocity Normal Depth Critical Depth Channel Slope Critical Slope Infinity ftls 0.88 ft 0.70 ft 0.00500 ft/ft 0.00795 ftfft Bentley Systems, Inc. Haestad Methods SoBithile5tEldwfMaster V8i (SELECTseries 1) [08.11.01.03] 5/16!2018 10:22:46 AM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 2 of 2 18 -Inch RCP Capacity Project Description Friction Method Solve For Manning Formula Discharge Input Data Roughness Coefficient Channel Slope Normal Depth Diameter 0.013 0.00500 ft/ft 1.40 ft 1.50 ft Results Discharge Flow Area Wetted Perimeter Hydraulic Radius Top Width Critical Depth Percent Full Critical Slope Velocity Velocity Head Specific Energy Froude Number Maximum Discharge Discharge Full Slope Full Flow Type SubCritical 7.99 ft3/s 1.72 ft2 3.93 ft 0.44 ft 0.75 ft 1.10 ft 93.3 ° o 0.00742 ft/ft 4.65 ft/s 0.34 ft 1.74 ft 0.54 7.99 ft3/s 7.43 ft3/s 0.00578 ft/ft GVF Input Data Downstream Depth Length Number Of Steps 0.00 ft 0.00 ft 0 GVF Output Data Upstream Depth Profile Description Profile Headloss Average End Depth Over Rise Normal Depth Over Rise Downstream Velocity 0.00 ft 0.00 ft 0.00 °/Q 93.33 °/Q Infinity ft/s Bentley Systems, Inc. Haestad Methods SoBithile5tEldwfMaster V8i (SELECTseries 1) [08.11.01.03] 5/16/2018 10:26:31 AM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 1 of 2 18 -Inch RCP Capacity GVF Output Data Upstream Velocity Normal Depth Critical Depth Channel Slope Critical Slope Infinity ft/s 1.40 ft 1.10 ft 0.00500 ftlft 0.00742 ft/ft Bentley Systems, Inc. Haestad Methods SoBithile5tEldwfMaster V8i (SELECTseries 1) [08.11.01.03] 5/16!2018 10:26:31 AM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 2 of 2 24-i n-i CP West of Pond Project Description Friction Method Solve For Manning Formula Discharge Input Data Roughness Coefficient Channel Slope Normal Depth Diameter 0.013 0.02000 ft/ft 1.88 ft 2.00 ft Results Discharge Flow Area Wetted Perimeter Hydraulic Radius Top Width Critical Depth Percent Full Critical Slope Velocity Velocity Head Specific Energy Froude Number Maximum Discharge Discharge Full Slope Full Flow Type Supercritical 34.41 3.06 5.27 0.58 0.97 1.92 93.8 0.02013 11.25 1.97 3.84 1.12 34.41 31.99 0.02314 ft3/s ft2 ft ft ft ft ft/ft ft/s ft ft ft3rs ft3ls ft/ft GVF Input Data Downstream Depth Length Number Of Steps 0.00 ft 0.00 ft 0 GVF Output Data Upstream Depth Profile Description Profile Headloss Average End Depth Over Rise Normal Depth Over Rise Downstream Velocity 0.00 ft 0.00 ft 0.00 °/Q 93.75 °/Q Infinity ft/s Bentley Systems, Inc. Haestad Methods SoBithile5tEldwfMaster V8i (SELECTseries 1) [08.11.01.03] 5/12/2018 9:57:33 AM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 1 of 2 24-i n-i CP West of Pond GVF Output Data Upstream Velocity Normal Depth Critical Depth Channel Slope Critical Slope Infinity ftfs 1.88 ft 1.92 ft 0.02000 ft/ft 0.02013 ft/ft Bentley Systems, Inc. Haestad Methods SoBithile5tEldwfMaster V8i (SELECTseries 1) [08.11.01.03] 5/12/2018 9:57:33 AM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 2 of 2 36 -inch HDPE E Capacity Project Description Friction Method Solve For Manning Formula Discharge Input Data Roughness Coefficient Channel Slope Normal Depth Diameter 0.010 0.02000 ft/ft 2.90 ft 3.00 ft Results Discharge Flow Area Wetted Perimeter Hydraulic Radius Top Width Critical Depth Percent Full Critical Slope Velocity Velocity Head Specific Energy Froude Number Maximum Discharge Discharge Full Slope Full Flow Type Supercritical 130.95 7.00 8.32 0.84 1.08 2.96 96.7 0.02086 18.72 5.44 8.34 1.29 131.90 122.62 0.02281 ft3/s ft2 ft ft ft ft a�Q ft/ft ft/s ft ft ft3/s ft3/s ft/ft GVF Input Data Downstream Depth Length Number Of Steps 0.00 ft 0.00 ft 0 GVF Output Data Upstream Depth Profile Description Profile Headloss Average End Depth Over Rise Normal Depth Over Rise Downstream Velocity 0.00 ft 0.00 ft 0.00 cyo 96.67 cyo Infinity ft/s Bentley Systems, Inc. Haestad Methods SoBithile5tEldwfMaster V8i (SELECTseries 1) [08.11.01.03] 5/12/2018 9:59:01 AM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 1 of 2 36 -inch HDPE Capacity GVF Output Data Upstream Velocity Normal Depth Critical Depth Channel Slope Critical Slope Infinity ftls 2.90 ft 2.96 ft 0.02000 ft/ft 0.02086 ftfft Bentley Systems, Inc. Haestad Methods SoBithile5tEldwfMaster V8i (SELECTseries 1) [08.11.01.03] 5/12/2018 9:59:01 AM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 2 of 2 Swale at 2.5% For EC Blankets Project Description Friction Method Solve For Manning Formula Discharge Input Data Roughness Coefficient Channel Slope Normal Depth Left Side Slope Right Side Slope 0.040 0.02500 0.50 20.00 20.00 ft/ft ft ft/ft (H:V) ft/ft (H:V) Results Discharge Flow Area Wetted Perimeter Hydraulic Radius Top Width Critical Depth Critical Slope Velocity Velocity Head Specific Energy Froude Number Flow Type Subcritical 11.65 5.00 20.02 0.25 20.00 0.46 0.03806 2.33 0.08 0.58 0.82 ft3/s ft2 ft ft ft ft ft/ft ft/s ft ft GVF Output Data Upstream Depth Profile Description Profile Headloss Downstream Velocity Upstream Velocity Normal Depth Critical Depth Channel Slope Critical Slope 0.00 ft 0.00 Infinity Infinity 0.50 0.46 0.02500 0.03806 ft ft/s ft/s ft ft ft/ft ft/ft 5/3/2018 2:31:04 PM Bentley Systems, Inc. Haestad Methods FlowMaster V8i (SELECTseries 1) [08.11.01.03] 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 1 of 1 DETENTION VOLUME BY THE MODIFIED FAA METHOD Project: Anadarko' Latham Gas Plant Basin ID: Area Tributary to the Detention Pond (For catchments less than 160 acres only. For larger catchments, use hydrograph routing method) (NOTE: for catchments larger than 90 acres, CUHP hydrograph and routing are recommended) Determination of MINOR Detention Volume Using Modified FAA Method Determination of MAJOR Detention Volume Using Modified FAA Method Design Information (Input): Design Information (Input): Catchment Drainage Imperviousness L = 40.56 percent Catchment Drainage Imperviousness I;, = 40.56 percent Catchment Drainage Area A = 70.200 acres Catchment Drainage Area A = 70.200 acres Predevelopment NRCS Soil Group Type = A A. B, C, or D Predevelopment NRCS Soil Group Type = A A, B, C, or D Return Period for Detention Control T = 10 years (2, 5, 10, 25. 50, or 100) Return Period for Detention Control T = 100 years (2, 5, 10, 25, 50. or 100) Time of Concentration of Watershed To = 23 minutes Time of Concentration of Watershed Tc = 23 minutes Allowable Unit Release Rate q = 0.13 cfs/acre Allowable Unit Release Rate q =r 0.17 cfs/acre One -hour Precipitation Pi = 1.39 inches One -hour Precipitation Pi = 2,71 inches Design Rainfall IDF Formula I = C1` P1t(C2+TJAC3 Design Rainfall IDF Formula I = C.' PII(C2+TGjAC3 Coefficient One C, = 28,50 Coefficient One C1 = 28 50 Coefficient Two C2 = 10 Coefficient Two C.2 = 10 Coefficient Three C3, = 0.789 Coefficient Three O3 = 0.789 Determination of Average Outflow from the Basin (Calculated): Determination of Average Outflow from the Basin (Calculated): Runoff Coefficient C = 0.30 Runoff Coefficient C = 0.41 Inflow Peak Runoff (gyp -in = 52.26 cfs Inflow Peak Runoff Op -in = 139.24 cfs Allowable Peak Outflow Rate Qp-out = 9.13 cfs Allowable Peak Outflow Rate Qp-out = 12.21 cfs Mod. FAA Minor Storage Volume = 89,839 cubic feet mod. FAA Major Storage Volume = 314,857 cubic feet Mod. FAA Minor Storage Volume = 2.062 acre -ft Mod. FAA Major Storage Volume = 7228 acre -ft 6 1 = Enter Rainf al Duration Increment`-iI Increase Value Here (e.g. 5 for 5 -Minutes) Rainfall Duration minutes r':pul) Rainfall Intensity inches I hr (output) Inflow Volume acre-feet {output) Adjustment Factor "m" (output) Average Outflow oft (output) Outflow Volume acre-feet (output) Storage Volume acre-feet (output) Rainfall Duration minutes (input) Rainfall Intensity inches I hr (output) Inflow Volume acre-feet (output) Adjustment Factor "m" (output) Average Outflow cfs (output) Outflow Volume acre-feet (output) Storage Volume acre-feet (output) 14 3.73 1.081 1.00 9.13 0.126 0.955 10 7.27 2.881 1.00 12.21 0.168 2.712 16 5.91 3.747 1.00 12.21 0.269 3.478 16 3.03 1A06 1.00 9,13 0.201 1.205 22 2.57 1.641 1.00 9.13 0277 1.365 22 5.01 4.374 1.00 12.21 0.370 4.004 28 4.38 4.861 0.92 11.22 0.433 4.428 28 2.25 1.824 0.92 8,39 0.324 1.501 34 2.00 1.973 0.85 7.72 0.361 1.612 34 3.90 5.258 0.85 10.32 0.483 4.774 40 1.81 2.099 0.79 7.24 0,399 1.700 40 3.53 5.592 0.79 9.69 0534 5.058 46 1.65 2.207 0.76 6.89 0.437 1170 46 3.22 5.881 0/6 9.22 0.584 5.297 52 1.53 2.302 0.73 6.62 0.474 1.828 52 2.98 6.135 0.73 8.86 0.635 5.500 58 1.42 2.388 0.70 6.41 0.512 1.875 58 2.77 6.362 0.70 8.58 0.685 5.677 64 1,33 2,465 0.68 6.24 0.550 1.915 64 259 8.567 0.68 834 0.736 5831 70 2.43 6.754 0.67 8.15 0.786 5.968 70 1.25 2.535 0.67 6.09 0.588 1.947 76 1.18 2.599 0.65 5.97 0.625 1.974 76 2.30 6.926 0.65 7.99 0.836 6.090 82 2.18 7,086 0.64 7.85 0.887 6.199 82 1.12 2.659 0.64 5.87 0.663 1.996 88 1.06 2.715 0.63 5.78 0.701 2.014 88 2.07 7.234 0.63 7.73 0.937 6.297 94 1.01 2.767 0.62 5/0 0.738 2.029 94 1.98 7.374 0.62 7.63 0.988 6.386 100 0.97 2.817 0.62 5.63 0.776 2.040 100 119 7.505 0.62 7,54 1.038 6.467 106 0.93 .2.863 0.61 5.57 0.814 2.049 106 1.82 7.629 0.61 7.46 1.089 6.540 112 0.89 2.907 0.60 5.52 0.852 2.056 112 1.74 7.746 0.60 7.38 1.139 6.607 118 0.86 2.949 0.60 5:47 0.889 2.060 118 1.68 7.858 0.60 7.32 1.190 6.668 124 0.83 2.989 0.59 5.43 0.927 2.062 124 1.62 7.964 0.59 7.26 1.240 6.724 130 0.80 3.027 0.59 5.39 0.965 2.062 130 1.57 8.066 0.59 7.21 1.290 6.775 136 1.51 8.163 0.59 7.16 1.341 6.322 136 0.78 3.064 0.59 5.35 1.002 2.061 142 0.75 3.099 0.58 5.32 1.040 2.059 142 1.47 8.257 0.58 7.11 1.391 6.865 148 0.73 3.133 0.58 5.29 1.078 2.055 148 1.42 8.347 0.58 7.07 1.442 6.905 154 0.71 3.165 0.58 5.26 1.116 2.050 154 1.38 8.433 0.58 7.03 1.492 6.941 160 0.69 3.197 0.57 5.23 1.153 2.043 160 1.34 8.517 0.57 7.00 1.543 6.974 '166 0.67 3.227 0.57 5.21 1.191 2.036 168 1.31 8.598 0.57 6.97 1.593 7.005 172 1.27 8.676 0.57 6.94 1.644 7.033 172 0.65 3.256 0.57 5.19 1.229 2.028 178 0.64 3.285 0.57 5.17 1.266 2.018 178 1.24 8.752 0.57 6.91 1.694 7.058 184 0.62 3.312 0.56 5.15 1.304 2.008 184 1.21 8,826 0.56 6.88 1.744 7.081 190 0.61 3.339 0.56 5.13 1.342 1.997 190 1.18 8.897 0.56 6.86 1.795 7.102 196 0.59 3.365 0.56 5.11 1.380 1.986 196 1.15 8.966 0.56 6.84 1.845 7121 202 0.58 3.390 0.56 5.09 1.417 1.973 202 1.13 9.034 0.56 6.81 1.896 7.138 208 0.57 3.415 0.56 5,08 1.455 1.960 208 1.10 9.100 0.56 6.79 1.946 7.153 214 0.55 3.439 0.55 5.06 1.493 1.946 214 1.08 9.164 0.55 6/7 1.997 7.167 220 0,54 3.463 0.55 5.05 1.530 1.932 220 1.06 9.226 0.55 6.78 2.047 7.179 226 1.04 9,287 0.55 674 2.098 7.189 226 0.53 3.485 0.55 5.04 1.568 1.917 232 0.52 3.508 0.55 5.03 1.606 1.902 232 1.02 9.347 0.55 6.72 2.148 7.199 238 0.51 3.530 0.55 5.01 1.643 1.886 238 1.00 9.405 0.55 6.71 2.198 7.206 244 0.50 3.551 0.55 5.00 1.681 1.870 244 0.98 9.462 0.55 6.69 2.249 7.213 250 0.49 3.572 0.55 4.99 1.719 1.853 250 0.96 9.518 0.55 6.68 2.299 7.218 256 0.48 3.592 0.55 4.98 1.757 1.836 256 0.94 9.572 0.55 6.68 2.350 7.222 262 0.48 3.612 0.54 4.97 1.794 1.818 262 0.93 9.626 0.54 685 2.400 7225 268 0.47 3.632 0.54 4.96 1.832 1.800 268 0.91 9.678 0.54 6.64 2.451 7.227 274 0.46 3.651 0.54 4.95 1.870 1.782 274 0.90 9.729 0.54 6.63 2.501 7.228 280 0.45 3.670 0.54 4.95 1.907 1.763 280 0..88 9.780 0.54 6.62 2.552 7.228 286 0.44 3.689 0.54 4.94 1.945 1.744 286 0.87 9.829 0.54 6.61 2.602 7.227 292 0.44 3.707 0.54 4.93 1.983 1.724 292 0.85 9.878 0.54 6.59 2.653 7.225 298 0.84 9.925 0.54 6,59 2.703 7.222 298 0.43 3.725 00.54 4.92 2,021 1.704 304 0.42 3.743 0.54 4.92 2,058 1.684 304 0.83 9.972 0.54 6.58 2.753 7.219 310 0.42 3.760 0.54 4.91 2,096 1.:664 310 0.82 10.018 0.54 6.57 2.804 7.215 316 0.41 3.777 0.54 4.90 2.134 1.643 316 0.80 10.064 0.54 6.56 2.854 7.209 322 0.41 3/94 0.54 4.90 2.171 1.622 322 0.79 10.108 0.54 6.55 2.905 7.204 328 0.40 3.810 0.54 4.89 2,209 1.601 328 0.78 10,152 0.54 6.54 2.955 7.197 334 0.77 10.195 0.54 6.53 3.006 7.190 334 0.39 3.826 0.54 4.88 2247 1.579 340 0.39 3.842 0.53 4.88 2.285 1.558 340 0.76 10.238 0.53 6.53 3.056 7.182 346 0.38 3.858 0.53 4:87 2.322 1.536 346 0.75 10.280 0:53 6.52 3,107 7.173 352 0.38 3.873 0.53 4.87 2,360 1.513 352 0.74 10.321 0.53 6.51 3.157 7.164 358 0.37 3.889 0.53 4.86 2.398 1.491 358 0.73 10.362 0.53 6.50 3.207 7.154 364 0.37 3.904 0.53 4.86 2.435 1.468 364 0.72 10..402 0.53 8.50 3.258 7.144 370 0.71 10.441 0.53 6.49 3.308 7.133 370 0.37 3.919 0.53 4.85 2.473 1.445 Mod. FAA Minor Storage Volume (cubic ft.) = 89,839 Mod. FAA Major Storage Volume (cubic IL) = Mod. FAA Minor Storage Volume (acre -ft.) = 2.0624 Mod. FAA Major Storage Volume (acre -fl) = UDFCD DETENTION BASIN '~VOLUME ESTIMATING WORKBOOK Version 2.35. Released January 2015 314,857 7.2281 FAALathamDetPond.xls, Modified FAA 5110/2018, 4:52 PM a DETENTION VOLUME BY THE MODIFIED FAA METHOD Project: Anadarko' Latham Gas Plant Basin ID: Area Tributary to the Detention Pond Inflow and Outflow Volumes vs. Rainfall Duration 12 10 8 6 4 2 0 •e Ore -ire ••moo*•S•S•ii#•i•osi#. � I { 0 • • ...... fNap i 1MIr i `.-- NW ' .. ea Iso 4P to -8 er ao ar s: .l" ar; r Ow 40 1 taP fp. e CI 1110 llia mil T is - ill• Sf el © 4_i O 1l.l if 1! fl 1 I C O, 1 n[' j f 1 _r_ • 6 i l� r � 3r OL).V 1-1 - a V i1.� • i 1sts � ial ,a Air. Z re �y Vb y--� oo /�-, O ; i �a+ ' i � ac ' 0000300 I� a ,y Y- • •-. i f - a Is. I- IF —a al a s L ,---y 0%i I 0 50 100 150 200 Duration (Minutes) 250 300 350 mmm minor Storm Inflow Volume minor Storm Outlaw Vdume Minor Storm Storage Volume —0— Major StorminflowVolume f Major Storm Outflow-Vdume f Major Storm Storage Volume 400 J UDFCD DETENTION BASIN VOLUME ESTIMATING WORKBOOK Version 2.35. Released January 2015 FAALethernDetPond.xls, Modified FAA 5.10'2018, 4:52 PM ANADARKO PETROLEUM SAMUEL ENGINEERING, INC. Latham Gas PIANT Fort Lupton, Colorado Pond Storage Volume Discovery Stage Storage Interval Elevation., Ft. Area, Ft` Volume, CF Description 0.00 4858.70 0 0.00 0.30 4859.00 702 105.30 0.70 4859.40 4764 1198.50 1.10 4859.80 13660 4883.30 1.50 4860.20 26754 12966.10 1.90 4860.60 41666 26650.10 2.30 4861.00 53378 45658.90 2.44 4861.14 55476 53409.30 W QCV 2.70 4861.40 59633 68235.34 3.06 4861.76 61923 89841.92 10-Yr. Storage 3.10 4861.80 62483 92609.96 3.90 4862.60 66493 144200.36 4.70 4863.40 70696 199075.96 5.50 4864.20 75091 257390.76 6.25 4864.95 78825 314852.99 100-Yr. Storage 6.30 4865.00 79678 319079.47 6.55 4865.25 86380 339504.60 Spillway 7.55 4866.25 93420 429764.20 Freeboard N Discovery Detention Pond 4870.00 a 4865.00 O 0 LU 0 4860.00 it 4855.00 0 25O00 50000 75000 100000 125000 150000 175000 20OO00 225000 250000 27500O 300000 325000 350000 375000 400000 425000 450000 Volume, CF Project: Lathan Detention Pond Basin ID: Developed Tributary to Detention Pond WQCV Design Volume (Input): Catchment Imperviousness, Is = Catchment Area, A = Depth at WQCV outlet above lowest perforation: H = Vertical distance between rows, h = Number of rows. NL = Orifice discharge coefficient. C = Slope of Basin Trickle Channel, S = Time to Drain the Pond = Watershed Design Information tlnryutt; Percent Soil Type A= Percent Soil Type B = Percent Soil Type Cff3 = Outlet Design Information (Output): 3 40.6 70.20 3 4.00 6.00 0.62 0.004 40 100 0 percent acres Diameter of holes, D = feet Number of holes per row, N = inches fl+ft hours Height of slot, H = Width or slot, W = Water Quality Capture Volume. WQCV = Water Quality Capture Volume (WQCV) = Design Volume (WQCV 112' Area' 1.2) Vol = Outlet area per row: Ni = Total opening area at each row based on user -input above. A0 = Total opening area al each row based on user -input above, A0 = 1.649 1 OR inches inches inches 0.175 watershed inches 1.022 acre-feet 1.226 acre -fact 2.14 square inches 2.14 square inches 0.015 square feet a a O O 0 O O b A s+O 0o O 0 O O 0 0 O 0 A o a O 0 t' Y Y Y O 0 o O r7 a O O O O O 0 a o Perforated Plate Examples Central Elevations of Rows of Holes in feet L Row Row 1 Row 2 Row 3 Row 4 Row 5 Row 6 Row 7 Rowe. Row 9 Row 10 Row 11 Row 12 Row 13 Row 14 Row 15 Row 16 Row 17 Row is Row 19 Row 20 Row 21 Row 22 Raw 23 Row 23 4559.17 4859.50 4859.84 4860.17 4860.50 4860.84 I i I I I Collection Capacity for Each Row of Holes in cis 4859.00 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.00 4859.20 0.0128 0.0000 0.0000 0.0000 0.0000 0.0000 0.01 4859.40 4859.60 0.0354 0.0484 0.0000 0.0233 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.04 0.07 4859.80 0.0586 0.0404 0.0000 0.0000 0.0000 0.0000 0.10 4860.00 4860.20 0.0672 0.0749 0.0522 0.0295 0.0000 0.0000 0.0000 0.15 0.0617 0.0443 0.0128 0.0000 0.0000 0.19 4860.40 0.0818 0.0700 0.0552 0.0354 0.0000 0.0000 0.24 4860.60 0.0863 0.0774 0.0643 0.0484 0.0233 0.0000 0.30 1860.80 0.0912 0.0611 0.0723 0.0586 0.0101 0.0000 0.35 4861.00 0.0998 0.0904 0.0795 0.0672 0.0522 0.0295 0.42 4861.20 0-.1051 0.0962 0.086.1 0.0749 0.0617 0.0443 0.47 1861.10 0.1102 0.1017 0.0922 0.0818 0.0700 0.0552 0.51 4861.60 0.1150 0.10,69 0.0979 0.0863 0.0774 0.0643 0.55 4861.80 0.1197 0.1119 0.1033 0.0942 0.0841 0.0723 0.59 1862.00 0.1211 0.1167 0.1085 0.0998 0.0904 0.0795 0.62 4862.20 0.1285 0.1213 0.1134 0.1051 0.0962 0.0861 0.65 4862.40 0.1326 0.1257 0.1181 0,110.2 0.1017 0.0922 0.68 1862.60 0.1367 0.1299 0.1226 0.1150 0.1069 0.0979 0.71 4862.80 0.1406 0.1341 0.1270 0.1197 0.1119 0.1033 0.74 4863.00 0.1444 0.1381 0.1312 0.1241 0.1167 0.1085 0.76 1863.20 0.1481 0.1120 0.1353 0.1285 0.1213 0.1131 0.79 4863.40 0.1518 0.1457 0.1392 0.1326 0.1257 0.1181 0.131 4863.60 0.1553 0.1494 0.1431 0.1367 0.1299 0.1226 0.84 1863.80 0.1588 0.1530 0.1169 0.1406 0.1311 0.1270 0.86 4864.00 0.1622 0.1566 0.1505 0.1444 0.1381 0.1312 0.88 4864.20 0.1655 0.1600 0.1541 0.1461 0.1420 0.1353 0.90 1869.10 0.1688 0.1631 0.1576 0.1518 0.1157 0.1392 0.93 4864.60 0.1720 0.1667 0.1610 0.1553 0.1494 0.1431 0.95 4864.80 0.1751 0.1699 0.1644 0.1588 0.1530 0.1469 0.97 Project: Basin ID: r Stage (feet, elev.) FAALatharnDetPond.rds. WQCV 51121'2018, 3:36 PM 10-Yr Orifice Project Description Solve For Opening Height Input Data Discharge Headwater Elevation Centroid Elevation Tailwater Elevation Discharge Coefficient Opening Width 9.13 ft3fs ft ft 4865.25 4862.01 4858.00 ft 0.62 1.50 ft Results Opening Height Headwater Height Above Centroid Tailwater Height Above Centroid Flow Area Velocity 0.68 ft 3.24 ft -4.01 ft 1.02 ft2 8.95 ft/s Bentley Systems, Inc. Haestad Methods Solad ilecEl wMaster Vii (SELECTseries 1) [03.11.01.03] 5/15/2018 2:08:55 PM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 1 of 1 24" Pond Outlet Project Description Friction Method Solve For Manning Formula Discharge Input Data Roughness Coefficient Channel Slope Normal Depth Diameter 0.013 0.00500 ft/ft 1.50 ft 2.00 ft Results Discharge Flow Area Wetted Perimeter Hydraulic Radius Top Width Critical Depth Percent Full Critical Slope Velocity Velocity Head Specific Energy Froude Number Maximum Discharge Discharge Full Slope Full Flow Type SubCritical 14.59 2.53 4.19 0.60 1.73 1.38 75.0 0.00620 5.77 0.52 2.02 0.84 17.21 16.00 0.00416 ft3/s ft2 ft ft ft ft a�Q ft/ft ft/s ft ft ft3/s ft3/s ft/ft 5/13/2018 10:32:27 PM Bentley Systems, Inc. Haestad Methods SoBithile5tEldwfMaster V8i (SELECTseries 1) [08.11.01.03] 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 1 of 2 24" Pond Outlet GVF Output Data Upstream Velocity Normal Depth Critical Depth Channel Slope Critical Slope Infinity ftls 1.50 ft 1.38 ft 0.00600 ft/ft 0.00620 ft/ft Bentley Systems, Inc. Haestad Methods SoBithile5tEldwfMaster V8i (SELECTseries 1) [08.11.01.03] 5/1312018 10:32:27 PM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 2 of 2 Circular Outlet Orifice For Pond Project Description Solve For Diameter Input Data Discharge Headwater Elevation Centroid Elevation Tailwater Elevation Discharge Coefficient 12.21 4865.25 4858.35 ft3fs ft ft 4857.43 ft 0.20 Results Diameter Headwater Height Above Centroid Tailwater Height Above Centroid Flow Area Velocity 1.92 ft 6.90 ft -0.92 ft 2.91 ft2 4.20 ftls Bentley Systems, Inc. Haestad Methods SoladhitecEl wMaster Vii (SELECTseries 1) [03.11.01.03] 5/1212018 9:52:43 AM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 1 of 1 Spillway Weir Project Description Solve For Crest Length Input Data Discharge Headwater Elevation Crest Elevation Tailwater Elevation Crest Surface Type Crest Breadth Gravel 139.24 ft3.'s 4865.75 ft ft 4861.00 ft 4865.25 9.00 ft Results Crest Length Headwater Height Above Crest Tailwater Height Above Crest Weir Coefficient Submergence Factor Adjusted Weir Coefficient Flow Area Velocity Wetter! Perimeter Top Width 146.23 ft 0.50 ft -4.25 ft 2.69 US 1.00 2.69 US 73.12 ft2 1.90 ft.'s 147.23 ft 146.23 ft Bentley Systems, Inc. Haestad Methods SoladhitecEl wMaster Vii (SELECTseries 1) [03.11.01.03] 5/16/2018 10:40:03 AM 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 1 of 1 ANADARKO LATHAM GAS PLANT PROJECT NUMBER: 17128-01 CE -101 FINAL DRAINAGE REPORT REV. A, 05-15-2018 - PAGE 8 of 9 C. Exhibits 1. SITE PLAN 2. FLOOD PLAIN INFORMATION 3. NRCS SOILS 4. HYDROLOGIC SOIL GROUP 5. DRAINAGE PLANS - PRE -DEVELOPMENT, POST DEVELOPMENT 6. DETENTION POND PLANS, SECTIONS AND DETAILS Samuel Engineering i pirt Pia? ride ,,frtrt'.i ud±; THS DWIN6 MID THE DEStal R CE EP.S ARE CCHF10EY11IAL AND RENAN TEE PROPERTY OF PNbDARKO PETROLEUM CORPOF+AROt1 AND ZWIL NOT BE DISCLOSED TO OTHERS OR REPROOJCED IN ANY MANNER CR USED FOR ANY PURPOSE *MOM EXCEPT BY'ARMEN PERMC51@1 BY ME OILt1E% 0 o a to W (We 13 St c_• C N al W hER: INOS I 0 G 7 al. W u C ' Q [T, LL 0 O '^ Cl LU O c G G ..4r- U o u Nv' O W O o - , LU O CS t:+ .... J 0 o 0 f.. W o 0 O — W O O N - I ... W O O v • S f. U 0 o to - r LL O O x -a .-. LU O co G rJ +, U o r..)st N r W O ci : J r. W O r_ Cs N -,r JJ o 0o 00 N W o 4 R1 .... LU r. N : '! ... W o es 1*w r • .... W o u • -1 r- W O O x l ... W O co O V .... W 0 tti d- r- W 0 o c — W 8 o Ili RICHARD QIrJNLR: A $ I 01K? 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IdQAL} -_- j~ SITE I3CEuN13ARY; PRC)PFItTY I TNF ti-Sl ^, No ' A,RFla ti SITE CORNER r, — SITE G4 2VEIt R,L'TI I;? STo RAGE �' N 38600 y, I- N 38 4.13,/33 `, ‘ ; 1r ', r N 3s y-3.7:; EXISTING LOT A -- - -- - Aujo_N1NCj PRQPERTY L1NE EXIST. GRAVEL ROAD „�� 1 - I I E 10 S5} a2 y PROPOSED DRAIN PZCP. $LQP 5TpRAGC / E i) ,01.59 B0 ROC TO 3: I}FI}T It 1- rlly Li ' f '1 FLA511 5 CP,� RATCI R } r ------- SECTION LINE E:{IST GAS LINE;\, N „ \ r r' SITE L07RNFR --s r N l rJ ! 1 4E,'�, NS9'9 16 E y l ! , ` N 38 )39.88 'i �. ..---./ l� 9r 20001.38' I.189.F9'r12"F ---- P3.O POSED , t Ito rRo1 ERN 13oJNu: LIVE N 38400 I PROPFRTY I OUN17P iY ( 1 ,ItY I 100210 a 1 t. S ` II --r I 1285.04' 50°31 14"E �- EXIST. 7} PROPERTY =RTY 'II4,E _-- ._--- cT r Jrt_ F}RAIUkCE FLGy4l f,RRljlrt' I IRENE CLIFfCIRD S i Jrt1 • I+ \ti `k EXIST. tiAS lJELL BCIJNDAR" LINEOh'1NEL ?JEBBER I l�1y r"' 17TR— ROADS (y �} IltAhhlC FLOL''1 ARIt{}lJ rM1I300 II sOLJhuVdAL_ I r 8EXIST. lCj �j - . l. ES{15T_ LIkIEC f CJ,S ELEGTILICI0._SJD5TATIQN \ t .� ti� `d›- EASEMEN- LINE ReJPOsEu , ,°�8 FJ-J tE EYII GAS LINES I , +CRI 4a o •.. CRYOGENICKNIT3 . y•- I EX1,T. q ICP ,l�r,- D q" ,•! ;r: �; ti „� � 4 i7; . TE1PORARV CONSTRUCTION !I Lc 1 i j SITE ClJIRMER I 1• y�� 1t r PARKING - J96 5PAQt W � t:{15 I . pUtRrltAl7 �4-• N 3# D H) 1 h 3B 009.92 -- — �• N. d- to / , I c I I I S E iIS—. FEhC- •e, \ �' 1 I. O �+ ., o J! It'll l 1720 N89129116 -"E r //FF I \ — ..l) E r a . r \- 5C STTF []URNFR \N - �O s N 38 017.82 tltYLs(;FNi4 UNIT J . �ti • Z 1 rJ N 7 y ` EX ST. DIR- ROAD • • y 1, Y \ 2 - / F:(1ST FFNLF NOTES ,7gQFj f tif r'e•� w' L__I „ PROP PRUJFCTI ST(;N E 1n a6' .81 � c _ ti { �" • �- ��-,. fr C: EXIST. 1311_umkG �:. ,,, . ,l . 1 "(,�� \ i �` —a 1 ff �� "`'r PLSKTACC.E'SS r4oPo I 1. THE PROPOSED SITE IS LUGP.TED IN PART OF LOT II N 37600 I II TTASITNFYTy AND FENCING TO BE REMOVED 1ti I 4 ... , • _ =_ ' 1 I� 1 IJNIT 7 l • `� . _ - _ 4 = �� L yr R d'•. c� +' `r I _ U _y,, ea. rr r + ! I ..., L RF :U.3-0096 SECTION z TgV•1NSHIP Q3 NORTH RANGE r r , , , 66 'REST. 6TH I R.Nf_;IPAL MERIDIAN, 101 ELI) Cx31JNT`J I } I •• _ .� CRYnE_NIG . _ .`S- • • . . �r 'l,=�� — — �■� ;I f': GQLQRADO. l (t r _�%. . ... .. ` ... r I G I 0' r.JnI IL. 'tO4JI {� [ I �T A• •y 6 j..i•,1 .1� -x7, — 1 .I f • . 1 a �o �' _aM f c ® o� ! 5t - �� x•e ,f \ 2. THEBITESUIkVEV FOILTHIS PROJEO'rL')AS 13REPAREI} I;Y cl 1rII-.-FX �q Y.C} f '.�{jaVI AI 157, FFNLF -2 (KING SUIt'•iEVOlk5, IN AL'GIJ5T OF 2017. jHE HditIZONTF(L I I5 El) N -`7�10U I 25' LY,IST Fg=lfth EY.I T, RAl'EL 5 G It AI] f7 `_.. . RCjI QE17 DIi�1N r� 1 x EXIST. DIRT ROADS �� z ACCESS . _ . PEt lIT * I)AT�Jt 1�4S ON COLORADO STATE PLANE - • ," -� ' �.'.:::; DR,AIN TANK t [7 _-- IXr �.� r COORDINATCs, HAD 83 (2011), I IORIZ.OMTAL GOINTROL NG-5c 44°1 U I , o I r. AP13-:1017.2 -) I J o k ;1x,:,, .. , , • b' 4 _ n '• { t• \ C„ r < r "� �` . t :n EXIST_ -.r SAS l lE_L tX1 I , LX Pp.) LONGS , P,P ,E1) ,JI qN Tltth't13LE LI.g NETWORK. 11EItTIO.�L 17J Tull IS IILCI IMARK ASLI) $ UP I RIMI1LL VIkS NL IV/ORK MAUI) 88. N 3720Q Mk' VER: 1 z Q t ,, �'+ a ., l/ AKINt f Alltk r� LU T 1 rS I I �ItC1POStI} 1 +3' TO I;F PR{]TF{TFIy — E7,IST.[�1,54VELL , - , II AN) PIPING CANIJECIIC}NS ID IFE OF -5 E PIPING PING -n�.r d x ..tt`- [jRKGhIr.K FAr11_v 11t1Jry1 -v. ti � v�, .,% '` �� `'ti G �i ,0' LAND OWN YL 4 ti n ��r— - ~�yl z)(15 I. D1R I RQAI} lry FJ,CII ITY 1)FSIeNF1) FjY QTHFIt5. _ F {1ST. ' C;JIS 5'JF11 '' - •i'snail.' PROPi,7$Llf L '�` U� , u.t r YARD r .�U. EXIST. GAS tL ELL '� VI: '4 60' 1[157, PJ13LIC (+ R0,1 Ti) I3E AI3ANDOKEl7 f^ THFI:4'1J,1 f a . ,.• V _ 4S90--1- _r IO , 7 RtIROILCILI) ti Ok CCr . O C PROPERTY ROIJKOARY \ s.! 25' .r.-,5 h£] g�JILI) � �iall 4 z4N= _-- PROP. 11 -PROP. • ' -IL. 5717 RFtG= OXIDIZER FLARE - f 1, =' 1 <: ce `� a `e ) ,, IRCP,T11O-11At 7t?FFIC ) ,1 , '~ PROPOSE) GUND - r -rr 511!,1 I I EYI5 , FENCE EXIST. CAS LINES EQUATION - COORDINATES HAVJt 13111.1 I IIUNC I tl). 1"+ l ADD 1,300.000 TO ALL ra —� ` 1 NORTHING coaRDIKATEs l _ Ja(S SOUND WALL rr o o L� -� r --'1 1:46.19 S*194•19'1S' yll '�-.1' AND 204.000 I Q ALL ". j.,- -..--- 1 -- T A y KI °11 E %ST P1C_' C QOIt1 TN E' ti, t . �� . I 3978.90' N)J9V'3'16"L!. S a• EXAMPLE; ED* , I I -- Silt 435697. I 1 I/ 11 CrORNtlt -,9--d- SITE 13CJJNDARY -_ '� 4E}9O 01 --- INCZ: I'ARCLAY I =ARMS LLG SITE IN CORNER PROP_R IV ho JNDARY ,,; ,,; I•J 6-O00 = N 1367000 Z E 11500 = E 3211500 1 LL1OFri ^ ��'2 E12327.29 PrPreliminaryN36400 'rrt �E10581.29 st U u.NEIL' For o az Construction 811 • KIWI awl bola Caltmere!)III as • tF .},F: ,! ': sF r,.:_:..unk LL!Ft:: I?I2J S E Samuel Engineering /4c I` .. CM Jl•.:; '!V to `so 4-q E.Cieava"'- t„pr Sdtr2vC Pill •4:;(2.r14.434 ..44nk:J;J 4' gut c: t; r.111 F --J: ;(4;.:113..[.3'!.^, HMS% I•EFEiLM Z 171:20J:KCE I(=lE:(^Ft: Anadar1i Petroleu m Co rporation CIVIL GENERAL CIVIL SITE PLAN r __-- „-- f .`--{ ORAN BY:,, H1LLE71 CREATION DATE to -1a; -n S,r,, ISSUED 9DAEFNIT ,t, .,4a11e ,�, m,4ape ------------- M. SKELSktY APPR, DATE: 10/101/17 !&1 IMED Da/PEWIT 1411 mr`�pa I LATHANM GAS PLANT ENC. No.: SHEET No. 6.AO. 4'l. MI: 4C. CFSC,-:-IDn ,,, It 7-::::-.----001 �....I •I LAT-CS•0{��t l Ice-1/{w`s. SOU; 1- = 2on• Samuel Engineering We Provide Solutions 8450 East Crescent Parkway, Suite 200 Greenwood Village, CO 80111 r4 Ln 0 a U fo5 County Road AREA OF M I N I M AL FLOOD HAZARD zciie X County Road 3c Phone: 303. 714.4840 FAX: 303.714.4800 County Road 36 LATHAM PROJECT LOCATION PANEL 08123C 1950E eff. 1/20/20'16 County Road 35 County Road 35 Ca 15' 421'N 4Q° 15' 7' N 1040 45' 12" W 521000 521100 521200 521300 521400 Unified Soil Classification (Surface) Weld County, Colorado, Southern Part (Latham USC Soils) Soil Map may not be valid at this scale. 521500 521600 521700 521800 521900 522000 527100 522300 -577400 522500 3 522800 l 577400 522500 522600 1049 4512" W 521000 521100 5212)0 521300 521400 521500 521600 521700 521800 521900 522000 572100 522200 522300 N A Map Scale: 1:7,580 if printed on A landscape (11" x 8.5") sheet. ( 100 200 400 600 Mars Fact 0 350 700 1400 2100 Map projection: Web Mercator Comer coordinates: WGS84 Edge tics: U TM Zone 13N WGS84 N c 40° 15'42"N 40° 15'7'N USDA Natural Resources allsrezr Conservation Service Web Soil Survey National Cooperative Soil Survey 9/23/2017 Page 1 of 5 Unified Soil Classification (Surface) Weld County, Colorado, Southern Part (Latham USC Soils) MAP LEGEND Area of Interest (Ail) Area of Interest (ACS I) Soils Soil Rating Polygons I —I CH CL CL -A (proposed) CL -K (proposed) CL -ML CL -O (proposed) C L -T (proposed) GC GC -GM GM GP GP -GC GP -GM GW GW-GC OW -GM MH MH-A (proposed) MH-K (proposed) MH-0 (proposed) MH-T (proposed) ML ML -A (proposed) ML -K (proposed) ML -0 (proposed) ML -T (proposed) OH OH -T (proposed) OL PT SC SC-SM SM SP SP -SC SP-SM SW SW -SC SW-SM Not rated or not available Soil Rating Lines ForwE ogle oxibe pprikot Faso CH CL CL -A (proposed) CL -K (proposed) CL -ML CL -C (proposed) CL -T (proposed) Fordo planae ppolko eiffthie pisabo pinkao pisite 0 GC GC -GM GM GP GP -GC GP -GM OW OW -GC GW-GM MH MH-A (proposed) MH-K (proposed) MH-O (proposed) MH-T (proposed) ML ML -A (proposed) ML -K (proposed) ML -O (proposed) ML -T (proposed) OH OH -T (proposed) OL PT SC SC-SM SM powevo SP SP -SC SP-SM SW SW -SC ,,,%,. SW-SM r 0 Not rated or not available Soil Rating Points CH • • • • • • El El • • • CL CL -A (proposed) CL -K (proposed) CL -ML CL -C (proposed) C L -T (proposed) GC GC -GM GM GP GP -GC GP -GM OW GW-GC OW -GM MH MH-A (proposed) • • ■ • • El a • • • • • • MH-K (proposed) MH-O (proposed) MH-T (proposed) ML ML -A (proposed) ML -K (proposed) ML -O (proposed) ML -T (proposed) OH OH -T (proposed) CL PT SC SC-SM SM SP SP -SC SP-SM SW SW -SC SW-SM Not rated or riot available Water Features Streams and Canals Transportation 1-11-1 Rails USDA Natural Resources alls Conservation Service Web Soil Survey National Cooperative Soil Survey 9/23/2017 Page 2of5 Unified Soil Classification (Surface) Weld County, Colorado, Southern Part (Latham USC Soils) MAP INFORMATION Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOl were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (E PS :857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Weld County, Colorado, Southern Part Survey Area Data: Version 15, Sep 22, 2016 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Jul 17, 2015 Sep 22, 2016 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. USDA Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 9/23/2017 Page 3of5 Unified Soil Classification (Surface) Weld County, Colorado, Southern Part Latham USC Soils Unified Soil Classification (Surface) Unified Soil Classification (Surface)— Summary by Map Unit — Weld County, Colorado, Southern Part (CO618) Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 47 Olney fine 1 to 3 sandy loam, percent slopes SC 9.1 3.1% 48 Olney fine 3 to 5 sandy loam, percent slopes SC 63.6 21.8% 62 Terry fine to 3 sandy loam, percent slopes 0 SC 7.0 2.4% 63 Terry fine to 9 sandy loam, percent slopes 3 SC 6.1 2.1% 69 Valent sand, percent slopes 0 to 3 SP-SM 38.8 13.3% 70 Valent sand, percent slopes 3 to 9 SP-SM 135.8 46.5% 72 Vona loamy sand, percent slopes 0 to 3 SM 24.6 8.4% 73 Vona loamy sand, percent slopes 3 to 5 SM 6.9 2.4% Totals for Area of Interest 291.8100.0% Description The Unified soil classification system classifies mineral and organic mineral soils for engineering purposes on the basis of particle -size characteristics, liquid limit, and plasticity index. It identifies three major soil divisions: (I) coarse -grained soils having less than 50 percent, by weight, particles smaller than 0.074 mm in diameter; (ii) fine-grained soils having 50 percent or more, by weight, particles smaller than 0.074 mm in diameter; and (iii) highly organic soils that demonstrate certain organic characteristics. These divisions are further subdivided into a total of 15 basic soil groups. The major soil divisions and basic soil groups are determined on the basis of estimated or measured values for grain -size distribution and Atterberg limits. ASTM D 2487 shows the criteria chart used for classifying soil in the Unified system and the 15 basic soil groups of the system and the plasticity chart for the Unified system. The various groupings of this classification correlate in a general way with the engineering behavior of soils. This correlation provides a useful first step in any field or laboratory investigation for engineering purposes. It can serve to make some general interpretations relating to probable performance of the soil for engineering uses. For each soil horizon in the database one or more Unified soil classifications may be listed. One is marked as the representative or most commonly occurring. The representative classification is shown here for the surface layer of the soil. USDA Natural Resources Web Soil Survey a Conservation Service National Cooperative Soil Survey 9/23/2017 Page 4 of 5 Ca 15' 421'N 40° 15' 7' N 1040 45' 12" W 521000 521100 521200 5213O} 521400 r Soil Map may not be valid at this scale. Hydrologic Soil Group Weld County, Colorado, Southern Pad (Latham Hydrologic) 521500 521600 521700 521800 521900 522000 577100 522300 l -577400 l 522500 3 522800 l 577400 522500 522600 1049 4512" W 521000 521100 5212)0 521300 521400 521500 521800 521700 521800 521900 522000 'V7100 522200 522300 N A Map Scale: 1:7,580 if printed on A landscape (11" x 8.5") sheet. ( 100 200 400 600 Mars Fact 0 350 700 1400 2100 Map projection: Web Mercator Comer coordinates: WGS84 Edge tics: U TM Zone 13N WGS84 N c 40° 15'42"N 40° 15'7'N USDA Natural Resources allsrezr Conservation Service Web Soil Survey National Cooperative Soil Survey 9/23/2017 Page 1 of 4 Hydrologic Soil Group Weld County, Colorado, Southern Pad (Latham Hydrologic) MAP LEGEND Area of Interest (AO') Area of Interest (A01) Soils Soil Rating Polygons I —I A 0 AID Q B B/D 0 C CID 0 a 0 Not rated or not available Soil Rating Lines Frimbee A AID B BID C C/D a r 0 Not rated or not available Soil Rating Points • • ■ ■ A AID B BID 0 D • C/D D 0 Not rated or not available Water Features Streams and Canals Transportation 11-11-11. Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography MAP INFORMATION The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) :857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Weld County, Colorado, Southern Part Survey Area Data: Version 15, Sep 22, 2016 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Jul 17, 2015 Sep 22, 2016 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. USDA Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 9/23/2017 Page 2 of 4 Hydrologic Soil Group —Weld County, Colorado, Southern Part Latham Hydrologic Hydrologic Soil Group Hydrologic Soil Group Summary by Map Unit — Weld County, Colorado, Southern Part (CO618) Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 47 Olney fine 1 to 3 sandy loam, percent slopes B 9.1 3.1% 48 Olney fine 3 to 5 sandy loam, percent slopes B 63.6 21.8% 62 Terry fine to 3 sandy loam, percent slopes 0 B 7.0 2.4% 63 Terry fine to 9 sandy loam, percent slopes 3 B 6.1 2.1% 69 Valent sand, percent slopes 0 to 3 A 38.8 13.3% 70 Valent sand, percent slopes 3 to 9 A 135.8 46.5% 72 Vona loamy sand, percent slopes 0 to 3 A 24.6 8.4% 73 Vona loamy sand, percent slopes 3 to 5 A 6.9 2.4% Totals for Area of Interest 291.8 100.0% USDA Natural Resources Web Soil Survey a Conservation Service National Cooperative Soil Survey 9/23/2017 Page 3 of 4 Hydrologic Soil Group —Weld County, Colorado, Southern Part Latham Hydrologic Description Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long -duration storms. The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (AID, BID, and CID). The groups are defined as follows: Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink -swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. If a soil is assigned to a dual hydrologic group (A/D, BID, or CID), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. Rating Options Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie -break Rule: Higher USDA Natural Resources Web Soil Survey a Conservation Service National Cooperative Soil Survey 9/23/2017 Page 4 of 4 y �.;r.,•a'. • I I Il t II ti rt 1%• Awe ars sem ,•r ass Ith I N 36600 ti ra 'a ▪ bis um. t g lib ,r x64. -Is As "` gift o Mi.• "'..,. PRE —DEVELOPED DRAINAGE BASIN MAP WELD COUNTY, COLORADO 0- (t. N W FLOWS TO PI ATTE VALLEY DITCH SYSTEM THEN THE UNION DITCH TO R tit THE SOUTH PLATTE RIVER ass Ina }be boy 84. ass aim' ma r Parr 5TTE BCU!4DAF N —4 es ..................."6,0... —..r -...—.. .—.0 �..rrr• sent r__. �,.—n�i.:ass f�.t i—Li � LIMO li,al•i x111 MIN 111•Iri—• ••.•41 • a I a1 ,ia.. �..�..�...i .. �• IA _ear I I .1 N 35600 t `... tea` aeon '--. ti PROPERTY BOUNDARY aft aft win '.M i G I 1 i L• ..�..�..�...-.■.-• as• a.--r_r•—t._.iajay ..an : alai'_"•r_ — • — — • — - • -7- i / / / / F / / / / I 6F PROPERTY BOUNDARY lir alp lea.. u.. / aj NORTH L.1' i00L:pr t -0O• Ilfl' sr.ALE: 1" = zoo' LEGEND BASIN NUMBER BASIN AREA (ACRES) 5100' NOTES C10 RUNOFF COEFFICIENT C100 RUNOFF COEFFICIENT DE5TGN POINT PLANT SITE BOUNDARY PROPERTY BOUNDARY BASIN DELINEATION LTMiT5 FLOW DIRECTION DESIGNATION Ex15TTNG MAJOR CONTOUR (USGS) (10 FT INTERVAL) EXISTING MINOR CONTOUR (SURVEY 5' INTERVAL) 1. THE PROPOSED SITE 15 LOCATED IN PART OF LOT B RECX13-Q096 SECTION 2, TOWNSHIP 03 NORTH, RANGE 66 WEST, 6Th PRINCIPAL MERIDIAN, WELD COUNTY COLORADO. 2- THE SITE ADDRESS TS 16226 WELD COUNTY ROAD 3s a. FOR USR18•Q019 DRAINAGE BASIN SUMMARY BASIN PM?" (ACRES) (tFS) (S) 1 1 15B 28.15 159.66 NIA KINN loots below Call heiaeyoudg. PRFPARFr3 RV EQUATION - COORDINATES HAVE BEEN TRUNCATED. ADD 1,300,000 TO ALL NORTHING COORDINATES AND 3.240.000 TO ALL EASTING COORDINATES. EXAMPLE: N 67000 = N 1367000 E 11500 = E 3211500 gF PRQJFCT YIJNRFA 17121) Samuel Engineering Vic Prowda 3,Arflanr 04=0 F Cisrrent rprWpy. D.ie 200 CSe4rh.!1!111 V tope. cm, 011 • PION. 709 1144940 FpY• 7997144900 OT , IJKAwIDIipi SSLI[p -r [Irr.H'C[ -irk q YII:. 1.0. zn. urfixraI in.. Petroleum Corporation CIVIL GENERAL PRE -DEVELOPED DRAINAGE BASINMAP tI:F.:M HI I. HI_DJ LATHAM GAS PLANT k:AE- - .:. `F.G.I&'r•.-r>:1 FFF. I'IE: '1• Mir+f "Alt. -.0. LAT-CS-00610 EET 'C•. A' M 3$900 I: I *MI 70 car -at { 0 —PLANT SITE BOUNDARY, i a .-I . T 1 ° i I 1 • I esamr sc>.o INA-� 7 N 36800 X 1., --:tv I POST -DEVELOPED DRAINAGE BASIN MAP WELD COUNTY, COLORADO 0 N FLOWS FROM THE SITE TRAVEL ALONG THE I3T.ATTIf Vu .(.ry T-i(TC'(( SYSTPR 1s TT i :\1.CYNCJ TT (f IjNIOON DITC'(( LIT.TIKT:\TrT.Y TT I(7 SQCTTi( P1 I.. -•,•1 ■ imp tOil .. -I•- t.mi-s 411113 'z . 1 \NT) :\TTI, RIVPTt • 0 PROPERTY BOUNDARY , I - I 1 N • III i A I • •t 7 I- —_ . I I In I A r aat" — man ran eu_I n i. rani. .a min dIt + !- IL'S3 =.TSasa • Ii Wa. �% s PtUPCRTY 0{KINDARY 4 1 W I h Ia W gee 0 NORTH 0' 100_ ! 92 cpn00' SCALE: i" = 200' LEGEND BASIN NUMBER BASIN AREA -- (ACRES) - 5100 •.. NOTES C10 RUNOFF COEFFICIENT C100 RUNOFF COEFFICIENT DESIGN POINT PLANT SiTE BOUNDARY PROPERTY BOUNDARY BASIN DELINEATION LIMITS FLOW DIRECTION DESIGNATION EXISTING MAJOR CONTOUR (USGS) (10 FT INTERVAL) EXISTING MINOR CONTOUR (SURVEY 5" INTERVAL) L. THE PROPOSED SITE 15 LOCATED TN PART OF LOT B RECX13.4096 SECTION 2, TOWNSHIP 43 NORTH. RANGE 66 WEST, 6TH PRINCIPAL MERIDIAN, WELD COUNTY COLORADO. 2. THE SiTE ADDRESS 15 16335 WELD COUNTY ROAD 3$ 3. FOR U5R1$-0019 DRAINAGE BASIN SUMMARY BASIN DES N (ACRES) tFS) (9.r5) I I 7Q.2Q 53. BB 141.94 Pi ii. Know toots below fall befeteyoudg. EQUATION - COORDINATES HAVE BEEN TRUNCATED. ADD 1,300,000 TO ALL NORTHING COORDINATES AND 3.244.444 TO ALL EASTiNG COORDINATES. EXAMPLE: N 67000 = N 1367000 E 11500 = E 3211500 PRFPARFI) RV SF PRI)JFGT VIJNRFA 171$0 Samuel Engineering vro vrowdrr Mat 04=4 F Crsrrpet PPri-'py.Su i8 2QQ Plump 909 314 AR) I7ppn-!len 4'Opp 4 C4 Q011• Fpr 9097144004 y1 � RI -I• -RIND- I]RAVII MN IIIIAflRYW; l$$ I[p r [uNI,r.C[ I Petroleum Corporation CIVIL GENERAL POST -DEVELOPED BLSINMAP TRIM' TMY'DDElENTON C=31;:y •P•: I. • a 12.1 rla 2' 12r'I}RIwI ICs r LATHAM GAS PLANT ^A E: �.i.':`.. -.1t. LAT-CB-00611 :MEET P. A 1 c - 1 ,./A\ r. J ANADARKO LATHAM GAS PLANT PROJECT NUMBER: 17128-01 CE -1W1 FINAL DRAINAGE REPORT REV. A, 05-15-2018 - PAGE 9 of 9 4.0 MAINTENANCE PLAN The maintenance plan is submitted as a separate document and includes, at a minimum, the following: S • S S S Frequency of onsite inspections Repairs, if needed Cleaning of sediment and debris from drainage facilities Vegetation maintenance Manufacturer maintenance specifications do not apply Minor and major inspection checklists Samuel Engineering 1W- Prnv('ds 5uluWANrrr' Samuel Engineering We Provide Solutions 8450 East Crescent Parkway, Suite 200 Phone: 303.714.4840 Greenwood Village, CO 80111 FAX: 303.714.4800 PRELIMINARY DRAINAGE REPORT Anadasp Petroleum Corporation LATHAM 200 MMSCFD GAS PROCESSING PLANT LOTS B, RECORDED EXEMPTION 1211-2-1, RECX13-0096 LOCATED IN THE NORTH 1/2 OF SECTION 2, TOWNSHIP 3 NORTH, RANGE 66 WEST, 6TH PRINCIPAL MERIDIAN, COUNTY OF WELD, STATE OF COLORADO PREPARED FOR: ANADARKO PETROLEUM CORPORATION 1099 18th STREET, SUITE 16000 DENVER, COLORADO 80202 PREPARED BY: SAMUEL ENGINEERING, INC. 8450 EAST CRESCENT PARKWAY, SUITE 200 GREENWOOD VILLAGE, CO 80111 ISSUED FOR USR PERMIT USR18-00XX PRE -17-0185 REVISION A DECEMBER 2017 LATHAM GAS PLANT PRELIMINARY DRAINAGE REPORT CERTIFICATION "I hereby certify that this report for the preliminary drainage design of the Latham Gas Plant was prepared under my direct supervision in accordance with the provisions of the Weld County Storm Drainage Criteria for the owners thereof." Mark A. Skelskey Registered Professional Engineer State of Colorado No. 39396 TABLE OF CONTENTS I. GENERAL LOCATION AND DESCRIPTION 1 III. DRAINAGE DESIGN CRITERIA I. DRAINAGE FACILITY DESIGN 6 V. CONCLUSION ? VI. REFERENCES VII. APPENDICES 10 Samuel Engineering We Provide Solutions 8450 East Crescent Parkway, Suite 200 Phone: 303.714.4840 Greenwood Village, CO 80111 FAX: 303.714.4800 I. GENERAL LOCATION AND DESCRIPTION A. Location The subject project is located in part of the North 112 of Section 02, Township 03 North, Range 66 West of the 6t" Principal Meridian, County of Weld, State of Colorado. The property address is 16226 Weld County Road 38, Fort Lupton Colorado. The property is located south of County Road 38 and east of County Road 33. No public streets are proposed within the property. There are no open channels, lakes, streams or irrigation ditches in the area of the proposed development. The subject property is not located in a floodplain. The surrounding area development consists of a several abandoned buildings previously used for poultry farming, several gas wells, gas piping, a large gas processing plant to the northeast and open ground adjacent to the site. Further to the northwest are four single family residences. Samuel Engineering We Provide Solutions 8450 East Crescent Parkway, Suite 200 Phone: 303.714.4840 Greenwood Village, Co 80111 FAX: 303.714.4800 I F co fU fi f WCR 38 ANADARKO LATHAM PROJECT SITE r SEC. 3 U7 1J SEC. 2 SEC. 1 SECTION LINE (Vi P.) WCR IN 0 RTH (1" = 200'0'} 24971x61 a 1 ,�— 1 a CIVIL GENERAL NCICYMAP a RI la ■arna a Sao YB FL Manias a- gal ia 'NU a B. Description of Property LA'Th4a Cid% MOW L • .430 lb' . iw4 Sal .11.r a LA T-C!442P10 Exhibit 1 — Vicinity Map The property is owned by Anadarko Petroleum and is a 239.91 -acre lot of which 70 -acres will be used for the proposed gas processing plant and 3.45 -acres will be used for an electrical substation. The remaining 166.46 -acres will remain mostly undisturbed except for a 2500 linear foot access road to the site. The access road will be along the alignment of an existing access used for access to existing well pads. The road will be widened to accommodate plant construction and operations traffic. The undeveloped portions of the property are primarily vacant, un-irrigated pasture land with no trees. The ground cover consists mainly of prairie grasses and weeds. There are no drainage ways or open channels on or adjacent to the property. 5 E I J Samuel Engineering We Provide Solutions 8450 East Crescent Parkway, Suite 200 Phone: 303.714.4840 Greenwood Village, CO 80111 FAX: 303.714.4800 Topographic relief over the property ranges from 490 8' to 4857 in elevation and is characterized by mostly flat grades that typically range from 0.5% to 3%. Some isolated areas on the western side of the site can approach 9% slopes. Surrounding properties are all zoned agricultural and include residential to the north, a gas processing plant to the northeast. Agricultural land with oil & gas facilities surrounds the site. Historic stormwater flows are generally in an east and northeast direction across the parcel. The flows then follow roadside ditches before heading north into open fields. Ultimately the receiving waters are the Platte Valley Ditch and eventually the South Platte River. There are three (3) soil types present, Valent sand (USC rating SP-SM) as the most predominant, Vona loamy sand (Also USC rating SM) and Olney loamy sand (USC rating SM), Valent sand (USC rating SR-SM) being the smallest area. Soils in the project area have a hydrologic rating of A. There are no irrigation facilities on or adjacent to the property. Initial construction will include site grading for an oil and gas support facility (cryogenic facility) including amine units, utility buildings, maintenance buildings, PDC buildings, dehydration units, cryogenic units, refrigeration units, residue compressors, vessels, tanks, towers, and miscellaneous support facilities for the 200MMSCFD processing facility. Grading for stormwater control and a 4.5 -acre-foot capacity detention pond scheduled to be constructed northeast of the plant on lot B. the stormwater detention pond is also part of the initial site grading. Final site surfacing will consist mainly of road base and gravel inside of the site fencing and native grasses following Weld County requirements for the remainder of the property. Terracon Consultants performed a subsurface exploration dated August 31, 2017. Groundwater was encountered 20' to 32' below the existing surface, far below any proposed roads or foundations. Samuel Engineering We Provide Solutions 8450 East Crescent Parkway, Suite 200 Phone: 303.714.4840 Greenwood Village, CO 80111 FAX: 303.714.4800 II. DRAINAGE BASINS AND SUB -BASINS A. Major Basin Description The subject property is not part of the Weld County Master Drainage Plan. For drainage basin delineation and surrounding areas, refer to the drainage plans that will be prepared with the construction drawings. Available information shows the property at the top of a basin with very little offsite flows able to cross the proposed plant site. All drainage from the proposed gas plant will be routed into the proposed detention pond. III. DRAINAGE DESIGN CRITERIA A. The drainage concepts and designs have been completed in accordance with the guidelines Weld County Storm Drainage Criteria. No deviations from the Criteria were used in development of this drainage study. Other references used in developing this report include the Urban Drainage Criteria Manuals. B. Development Criteria Reference and Constraints Stormwater discharge from the plant will also generally drain across the site by sheet flows, then into ditches or swales that will discharge into the forebay section of the detention pond. On -site -Ditches will be utilized in some areas to channel flow to the detention facilities. The ditches will have shallow slopes and low velocity flows. All onsite ditches are designed to accommodate the 10 -year design flows at a minimum. Existing roadside ditches adjacent to the property are not well defined and will be improved with the construction of the proposed Phase II site improvements. Erosion control best management practices including rip -rap, silt fence, erosion control logs, erosion blankets, terracing etc. will be installed throughout the construction areas. C. Hydrological Criteria Samuel Engineering We Provide Solutions 8450 East Crescent Parkway, Suite 200 Phone: 303.714.4840 Greenwood Village, CO 80111 FAX: 303.714.4800 The design Rainfall for the site was compared between the NOAA Atlas 2, volume III and the IDF tables published by UDFCD. The IDF tables have a higher design value and will be used for this site. The 10 and 100 year values used for this project are 1.38 and 2.63 inches per hour respectively. The design reoccurrence rainfall intensities for this project have been established as the 10 -year and 100 -year one -hour events. The rational method was used to calculate peak runoff for the property. Excel spreadsheets from UDFCD were used to calculate peak runoff, WQCV, Detention pond 10-yr and 100-yr storage volumes and WQCV 40 hour release quantities. Bentley Flow Master was used to calculate culvert sizes, ditch capacities, orifice openings and weir sizing. Excel spreadsheets were used to crosscheck detention pond capacities, rip - rap sizing and Impervious values. Detention pond volumes, maximum discharge rates and WOCV were calculated using UDFCD Detention Basin Volume Estimating Workbook, Version 2.35, released January 2015 using the modified FAA method. Refer to Appendix A D. Hydraulic Criteria The project site is located within a Non -Urbanizing Drainage Area. The detention pond will be designed using the 1 -hour, 100 -year storm event and release of the detained water will be at the historic runoff rate of the 1 -hour, 10 -year storm falling on the undeveloped site Detention pond capacity calculations were derived using UDFCD spreadsheets and end area method. The detention pond outlet structure will be a CDOT type D inlet with a XX-inch reinforced concrete outlet pipe that has full flow capacity equal to the 100 -year allowable unit release rate. The outlet structure controls the WQCV for the 40 -hour drain time with the use of a perforated orifice plate and circular holes. The 10 -year release rate is controlled with a rectangular opening orifice as part of the Type D structure at the 10 - year water surface elevation. Samuel Engineering We Provide Solutions 8450 East Crescent Parkway, Suite 200 Phone: 303.714.4840 Greenwood Village, Co 80111 FAX: 303.714.4800 No check or drop structures were used in the drainage design. IV. DRAINAGE FACILITY DESIGN A. General. Concept Wherever possible offsite flows are directed around the proposed development and returned into the natural flow patterns. These flows will be channeled around the site and into the existing drainage ditches and culverts. Information included in this report will include an overall site plan, pre and post development drainage basin delineation, construction drawings for the detention pond, tables for rainfall intensity, area impervious values and various calculation sheets for culverts, ditches, ponds and appurtenances. Refer to Exhibit 8 — Drainage Plans — Pre -Development, Post Development B. Specific Details All roads on the site will be gravel surfaced and designed with a 2% ± cross slope. The asphalt paving has a 2% crown with no curb/gutter. All culverts with the exception of the detention pond discharge pipes are designed for the 10-yr storm. All on -site culverts have less than 85% of the full -flow capacity. All ditches are deep or wide enough to handle the 10-yr storm event with 1 -ft of freeboard. The detention pond storage capacity was determined using the UDFCD spreadsheet, Detention Basin Volume Estimating Workbook, Version 2.3 by the modified FAA method. The pond size and shapes were determined from the required volume. Samuel Engineering r We Provide Solutions 8450 East Crescent Parkway, Suite 200 Greenwood Village, CO 80111 Phone: 303.714.4840 FAX: 303.714.4800 r Cts �Pl Y. Todir it I If!eTl I I le•I ^I l taP•Att' _�-s .: • 6 l I {A.'1:• C°* •.. Cam - I -eat- I [Calf Otitis. ... �' • I . 1 Egg C'-.: InIS'Q L{,}:4-,.-, :, •_ i 1 ' .. I I S.Oft3i511 PLUM PPM r__ PALO Ltr._'1T' GA,L'• • 1j67CI a_.. tide u ' 1� • r II .: , 3U 0.1i ..Y .ISara s.�r. r.r in, �..r..rrr -fir' - - - - ,ry.�r} I. r n . �y a e n �'. es . lTf�lyT'rr'r�-�r.a�.-/' ��s - 14�7T •J —'•. S �_�:' _as �. I e. Mill= J19 .-..0.tie, b 'AglC Ctrek i . V .. , o �'W I i i :An 014.0.1t..•:: j ig ' f I yy , - - I I Pia 1, _ -.\ �' 4LN6Ytn.�. s swans Lc e 1' LLI<"•. LASi�Ii`li ii, I - •- m i_tni V 11 WWII CI r ? : PLi , mar mistrals ITT. Pl'L��T '`•' r' I rata ... ISi1V`Yit� _�'J .1 :1, �' p1 , ma .... .'ir.�'I •.- — r- IV IL I41Ci.L"� Ism. 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ILolitllf: : A.11Y 1' lliln'l4 tsE •. — I I Y IiSl60:� Phi'. 7 LAW LOW PmItI � ait T- 1 .7JY1. UM WWI •'•� i y, y HL If V I F. I ti WIN L' Wwnbt #1143 -' a ttttr I iifi9 1 L !'ll'1t1i� TG It I ii c .MM7A.Ttii I �> ''aw-r!�TL1.I$ van Il`/1 �!� ataf!. - 1w ,m,:. _ •-. - : -. 41 ardor- I I V - _ - -. I erI^ - - ..- - - - . r.--. .--- 'i r __ .. Ill/•1' ��tK* .� . I,—_�tI.F - 1 .r� nay — 6.f'I -. .. •:. I.na7_c.:.ar. Y Pill n. FlIMM"IXWIMIBFC .11 y1'i:•-•• II '; 121£t' IL I ^'� LIt 41I I PQLIIPYItk11 I •.I pm.; tYi ckc_I.J. Ina Lid an• I mot Ittd II cc t:TliPt.Gq Oh it *up Ca Wheat Dawn i I't rilll Mtvl 51•Erriar ia—_ .—.. !#r1h4 SHKILR4I i M t rrsn a I'81h iN? i.iaial.a.I4 kit4 ar n1I£nli 14Rc1'et.L.r• N • C u r r Li H i1LOI NG $(3 aftvC14) $ lti3i�ak: i3P ILLISCI• 14.444462211 tai -11.611.7 magma cal. ftf lt. ELULA ram IIi fllSi RECurttCOP Mfl3N.!-tktPSM171'item .dF Sit i ; JIi{, i'Itlltw}pi consist; ItI mew it026i4.111? LSM11r CIDVEutL 414swam- cg, •m" 0004.4mmic i 4gI ARILILI34-11,71dS•7 —a■ LEGEND PLtii6'ti.lilJ pr,,:r. 4.. - Y 1d itGl4[Ia L' lA -- - rePtigina ant IILIZI arc URI I4 443 PUP4 awe 7tI ntri to *Pitt' [Ir9HYtlTL[ vi MUTES 1, T'4PPIPPOili• SIZE H LCC&'ME PVC: 4'#' 4Q'T4 itat.1.30Wt lattna Tite4 teat !-1) Nei mi. Para !+ Sr% ipma 1'.I rtaag Naas cram, rrl. rt arkarTr cm aoalna. I, Tit WTIELIIN1Y PCl n iIs RCR'GIrAfl Pt PPINI 1 ft IOW SIIRaPteiS 1Y LJQJST OF &late T. t e Hmid Ci h4. MILrI $1 WI11YU La =WM= III AIL Punk [LIC ilLi "PN. MID I'I 1ttt IL H[il>IIOd1IL. Lamwi tAtin What Wan It Fr: hilly nag 1GU • T7!'IL! y rata inn as 1. Wirt ? 5r' Yea M1$ ifIM�I19 :.1iiAi2TlP5tIdI TO T)d Plan rw-97 m tc- ri nun& PROPERTY LIB SETB;14CKb- 1. 5e''l 4at.4 M: * 14.1. Ii FtlinfP=' WC acam. I -bail rani JIM - 1 cati n-utL_ flushing Call Nis 7lsi fl•. -.- eh MI !JI • Ii, 1 ,mope Potty k'urr• crptlratlorl LAWN WI Mai Prell nl Iri ry Mir — .L.. midi.. LwIii.Y w. ttri.eve nark Lein 'UMW...MVOS Pargrel Writ 14414•••E CIVIL OnieltaL [IYtiwiLL SI `it MAO — T.t Ha lassie* *KW ®-a "Mr —r 119! 1+'. ft t1. Li littsialet Exhibit 2 — SITE PLAN • V. ON LU I N I. Compliance with Standards This drainage study has been prepared in accordance with the Weld County Storm Drainage Criteria and Urban Drainage Criteria Manuals and accepted Professional Engineering Practices. Samuel Engineering We Provide Solutions 8450 East Crescent Parkway, Suite 200 Phone: 303.714.4840 Greenwood Village, CO 80111 FAX: 303.714.4800 B. Drainage Concept This drainage study has been designed to convey developed flows through two extended detention basin detention ponds designed with controlled discharge rates for the minor and major storms. The flows than travel through established drainage ways in a manner consistent with the predevelopment drainage patterns. With properly constructed and maintained ponds along with the proposed erosion control measures this development will not adversely impact the existing drainage or existing downstream developments. No existing Weld County Master drainage plan was available for this project site. There are no irrigation ditches or facilities on or near the subject property►. V►I. REFERENCES A. Weld County Storm Drainage Criteria, Weld County Department of Public Works Weld County Colorado, October 2006. B. Urban Storm Drainage Criteria Manuals, Urban Drainage and Flood Control District. June 2001 I I i N 3U4110 ft 71100 =OR SOUND —i — ATTE1► JFA1'1 N11 F�14fF� N 37900 N 3i fL 37700 iL 31680( - 10157 y Jai r S 1 N 38 314.66 - 2ses i2' HpPE E 18 300,2E to 0.$q% mom AREA INLET Fra .7 INVERT OUT ARS I,7 5 TOP or I WET 484[0 4, ZS I' I MATC*ILXNE N 37600 SEE SHEET LAT-CS-006O4 a C .061.1 r SOUND AflLNuArrDI4 rnia DULLARDS _ - TYPIC'AL -NIL • R 7181 LP 16" RCP 4.93% SLOPE tel 111 ifi 3.+a4.Ox. E 10 [x.50 kEA.1NLE INVERT EN 4877.,1113 INVERT OUT 4877.X . TOP OF INLET 4480.i0 CRIYa 3 !.FUTURE) 1129 0 0 Am 3:1. 47U TTP no LF i1#" ItcP ® 'L_17% sun C CRY°► 1 • .1 a n ° .ate ■ a ° HATCHLINE E 2300 FOR SHEET L AT -CS -0040l4 To OO,6OS Petiole Lini COI1.101a Ilan LJIr11RA. GAs PLANT NOTES L THE LIFITPHAK ANADARkCS PLANT, IS LOCATED IN LOT S RECX33,00967 PART OF SECTION 2, TOWNSHIP LP3 NORTH! RANGE G6 WEST 6TH PRINCIPAL MERIDIAWELD COUNT, A STAI,'E OFLCI)& THE APPROXIMATE arm OF TkiE SN 4S TrAT LOHGITLfCOaE iMAO4 44° q50 E, UCETTUDE 331 38` 5r N. THE PLANE- ADDRESS IS A.6.≥26f CR. 3S, VIEW COUNTY, 2 ALI. afT AND FILL SL ES ARE : Iu UNLESS DOTED OTHERWISE ON 1HE DRAWL, ELEVATIONS SHOWN Age TO TOP OF FINISHED GRADE. 4, V DUCHIES An ?$I : IV SIDE SLOPES, SWALES ARE AS ilf4TED. A C EOTECHNICAL INVISITGATIO74 WAS PREPARED FOR THIS SITE by 1'ERPAC:QN SQNSULTANTS° GATED Al;J3, 311 201 71, AU. SOILS SHALL BE COMPACTED' TO A MINIMUM OF 95% OF IHE STANDARD PROCTOR DENSITY (SIPD) AT S 2% OF THE OPTIMUM MOISTURE CONTENT, REFER TO THE AsOVE REFE4ttucEDr 5LOrECHP1 LC I. IWESsfil4`tATiatN FOR ADDITIONAL INFORMATION AND SITE SPECIFIC REQUIREPTENTS. INCORPORATE THIS DRAWING WITH THE ODULCRANNG to 441! It GS -OuSU SERIFS FOR GRADING PLANS; L.AT-CS-OU4O0 SERIES FOR EROSION CONTROL PUNS,. SURFACING PLANS AND DETAILS T, SLOPES SHOWN IN THE GRADING AREA ON TRITE DRAWi1G ARE AVERAGE SLOPES. 8. AREA INLrs IRE C QT TYPE C MATCHING M ST,A IDARO M-160 1-1D DR APPROVED EQUAL .PLACE UDLtAROS AS NECFc ARY FOR AREA INLET PROTECTION 2.T"1MCAL) SECTION -CNA SEND nun vent trreestrit 1..0 pa collo:wen TYPICAL BOLLARD POST NORTH 1me-ar _ Edo,. C + 164' LEGEND 1EXISPINE.MAJOR eow0un 'PROPOSED MAJOR CONTOUR PROPOSED MINOR CCLNiOUR KOK SED Dino-um/AL FIJL N SWAILF FLOW DIRECTION 604 601 505 a..4 506 PLAN -PAthc Mktrsl_a REDuIRE1 ' Pull esi Oen k -et---s"?.. A sDEofrtvt. 1 '� EQUATION - WDRLDINA,TIES HAVE BEEN TRUNCATED. ADD I,,3DD.000 TO AU 140FTHLNOCOORDINATES AND 3W2*)D,Ot10 TO ALL EASING coonilINATES. EXAMPLE' N r4000 z J4 0157000 F !ISO E3211500 Krum Sial`l below. Cali before you dig, .....wor Samuel Lrtpineerar OMwrr,.Wren 16L1NW a srFw1'1l1Slaigi rdi il�'�I Ear CIVIL. GENERAL DRAINAGE PLAN LIT -CS -00 02 fr KIWI' MASI., rtb >01i Y d61C Irwoo w WJ Ith 41 Pd war tu W t V 1319SC>'iI PJ 3B 344.00 L IL 160.0(1_--- A,RM lNLn *3 Ito:VERT IN 4874.05 --- INVERT OUT 4873.95 TOP OF £NLEr 4822115 EQUIPMENT !BENCH 0.1 3 'tMI 'I 37700 ti a If H 376IIb • Ala ROAD L E le 483.0+0 AREA TMSI T a INVERT IN 41167;N [1'PIflT COOL' 411651.30 TOP CE INLET 167^3.30 litATCHILINE E 11300 FOR SHEET L.AT-CS-00G0+Tl TO 00605 BOLLARD TYPTCAt rI-■-;}� ALL1Nlt.ET5 1 234 LF 7+M^ RCP ^' 0 1,19% SLOPE E 11 72B,0O % .ARIA INLET *I 1NV IN(IN &S)+I Pi1.ID 'INVERT OUT ■1li3OON TCP OF INLET 487•C..S0 40D tLF 24' :RCP 0 11.65% LO F11730.04 ANEA INLET I' 7 tNvERT 04 4$73.8:3 EMVST CUT 4873,73 T1N CF INLET 487713 400 IF lR: RCP 1.1,6% WIPE IA'X3orLIAN CONCRETE FORESAW ARMORED TRIP RAP BERM 104LFe■74 RCP 1.414 SILOPe 4870 M 3P .280,i0q E i 1820.00 EL 4 H6&.2! 9101' i' IH? �IIII�IIM!'1 f r�sn+n,u� SPILLWAY 5A 435,0 E 12DB5.011 EL 3 .fl65_75 T(FP OF BERN P1 _Hi o35.00 e 12 081.00 EL 4 R66 25 IA44 TO* Of BeRM N313.2 9.12 E 12 L20.00 -- --�_} E6 4 tlbf,ls l TDP VF DEI I r9 38.O.8t7-3 Ise Ntri1a fl FOR GENERAL GRADING NOTES SEE DRA ING5 TAT-cs-non' AND LAT-CS-00602. IiiCORFOFLATE Pas DRAWING WITPi 'NE FOLLOWING townies LAT-E5-00200 SERIES FOR GRADING PLANS: LAT-CS-oD OO SERIES FOR EROSION CONTROL PLANS, SURFACING PLANS ANp DETAILS, LISb LJMM0LOC Ca2 EROSION CONTROL BLANKETS AS 14 t4UFACTUREL3 BY PR04'E3t GEOSYNTHETICS OR APPROVED EQUIVALENT PRODUCT FOR SWALE STABILIZATION. SPILLWAY CONSISTS OF T' DEPTH or Biala TYPE NI kip RAP ABOVE P9],RAFI 140N FABRIC. FOP RAP is TO bE'BURIED sariiI 6" TOP SOIL AND SEEDED WITH +&TIME GP,15SES- PLACE BOLLARDS AS NECESSARY FOR AREA -INLET PROTECTION 12-1VP[CAL) SI IA 5112 _ LEGEND EXISTING MAJOR CONTOUR PROPOSED MAJOR CONITCUR PRor[}SEU MINOR CONTOUR PROPOSED C I RE`:,TIONAL FLOW SWALE FLOW DIRECTION EQUATION - COORDINATES HAVE BEEN TR U I [ATED _ ADO I 2100,000 TO ALL NORTHING Ci ORDINA rEs AND 3,200,400 TO ALL EAWTING cOQ DIN4ATn, N 67000 at N1167000 E. 1t910aF32'11500 MOW w4u tt below. Call before yew dig. CIVIL GENERAL DRAINAGE PLAN iltrit pork, rINP 7 7rnp SO' % 175' SPILLWAY BURIED RIP N 3 43.5. 06 RAP - SEE E 1;. 23Loa $O1"E #5 FL'I 96 .2$ I:o' x iO' I-EAN FORESAY GRADE BREAK P1 m daster lB5. 3 2a" RCP E 1 1.92,44 - IN a p37. EL'S 863.55 — E 12 162.01 INV. 4864.10 ARMORED ,A RIP RAP BERM 2'" RC I N 37 988.92 E 12 296.40 INV., IN A8d.6CI GAADE N 37 983.22 •E 12 29+6.99 . _. IL 21 B4736 1591 f 19.5' DEPTH X 20' MICE GRASS UNED I SWALE a 1.00% SLOPE sEEidre. sa WIN TAI.LW TER RIP RAP MST? 1 TOP Or BERM N 38 43S. - E 12 23LH4 FL 4 1366.2.5 n. TOP OF BERN N 38 40.2.81 E 12 265.00 ■ IILA x,25 TOP OF BERM N 38 Dn.0O .rE12265.00 EL 4 846.2 1!U LF = 1H' RCP 1 �� e'I-" SLOPEI lam Fes EACH END Petroleum Corporation LATHAM GAS PLANT N 37540 SOUND ATTENUATION FENCE N 37200 SITE &)UNDMW N 31100 J N 315901, 01 35100 9tTEil�7ii'i' ulawnhd'.5 G.LEI rai• CEVIIIKIt@I SQW'NPP - - A TTENU.A T ION FENCE FOR GENERA GRADING NOTES SEE DRAWINGS I -AT -d'3-4 Oi Ar4C1 LAS-CS•tiOAD2, 2. iliCbloffittOtatert This .bP.AWING WIN THE F(LLOYYTNG otlaWirGS LAT-C$ uQaoo SERA FOii. GRADING PLANS; LAT-CS-0041D0 SERIES FOR EROSION 00IiMIOL QLrkNS, SURFACING ratios AND DETAILS. 3, SLQPes SHOWN IN THE MIMING ARCA ON THIS DRAWING .ARE AVERAGE SLOPES. Petroleum Corporation L&THA M GAS PLANT EQU'ATIO$ - RD.I NOES WAVE BEEN TRIPICMTWI ADD 1.300,090 TO ALL NORTHING COCRDINA•1ES AND IMO, OW TO ALL FASTING COORDINATES. EXAMPLE N bI0QO N 1167000 E 11.SNi ar E 1211500 1lmm�awhMP5 bel'. - Call terotre you dig EXISTING[MAJOR CONTOUR 5110 PRIED MAJOR COMOtl 511.2 - PROPOSED MINOR CONTOUR taROPOSED PIRECtIO AL 9.0* 603 MQ3 nu drY5 P0Alt i? r4.1i. l re- --air' . u vd'J9ifIT' ti moan. ?M@f. • CIVIL GENERAL DRAINAGE PLAN f*.s an rad tit_ IVMitt 1.ltiat L 12 288,79 LMY, IN 4[17 47 11T8 ROUNDARit - 48,72 1cr ens5 LINED SWALE KAYCKLlN E Ni 11150 FOR SHEET ILAT 0'oi 3 TO 00603 ate MAW Os-titb N 37300 635 LF 0.5' DEPTH SWALE Wril TYPE VI, WRAP AND FABRIC ti L34% ELOPE 20' WIDTH jTWP'LEAL, 4710© • GRADE - BREAK N 38906.00 E ii 730,00 EL A H9f1.58 �EL"aI11rI 5'Iwi'iEE P 3d E 0:3.90 E L1 716.00 EL4 892.011 -r,r ar�rrs.r. _. END StiN4tE .S GRADE aREAw, N 37 514,90 , 40 13 29 100 EL. 4 8!78.60 585 L.1 d.5' QEPJiI'* WADE GRASS LINED SWALE @ I.87 % St€1PE 5Er NOTE .#4 - DIREAk N 3,6 441)® E 13 2iIX00 1L4 889 -SFr BEMS SWALE PM 36 49410 UL4391.00 HATCHLINC N SYSOG SEE SHEET LaAT-CS-00603 END RIF' 4W WALE N 37 325.93 E 73/0,00 ELI 581.87 61411 IF OS DEPH SWALE Willi TYPE 11L RIPPAP AND PAM M A TICki Litz E t 12500 SEE SHEET LAT-CS 00606 NOTES I. FOR GENERAL GRADING KITES SEE DRAWINGS LAIT-CS-90,N2 MID LAT. CS -00602. 2. INICEIRPOIRATE VMS L7RA,NIING WITH THE FOLLOWING DRAWINGS I -AT- 00I %DELI FOR GRA.DINf PLANS; LAT-e oo 5ER FS FOR IERO SICHI COFTT IX PLANS, 5URFAcING FLANS Able DETAILS. swirls SHOWN IN THE GRADING AREA D$ THIS DRAWING ARE AVERAGE SLOPES, USE LMNDLDC L-2 tROSEON CONTROL BLANKETS AS MANUFACTURED EEY" P Y X G€OSYNTHETJCS OR A 'ROWED EQUIVALENT KUNIO- FOR SWALE STABILIZATION, PLACE OCKLMPS ► S NECESSARY' FOR MFG. 1111SF PROTECTION (2-TYP I CA EQUATION • LX$C$LOINATESi 'HAVE BEEN TRUNCATED. ADD 1,.300,000 TO *11 NORTHING CCCIRDINATES AND 3,300.0100 TO ALL E LSTfNG C INA TES- EXA MPLE: I'167DB0 • N ir3.67'{100 1≤ 11500 E 321.1500 I NORTH T.S.LefildommonitiO 5110- 5112 _ LEGEND MISTING Mi1JDR CONTOUR PROPOSED h1AKIR CONTOUR PROPOSED MINOR CONTOUR PROPOSED DIRECTIONAL FLOW SWAP DERECUONAL Know.,r ,„,�k,,,,h t% below GaLl Ware you Lhg. it r -r DE fear MaI*i -t1tkt Samuel Engineering Car -El a at las% r.r1YiDl Ommass'd S. CO Mill Ream m1it14 �Ai17p Ila >Od:Yi4 iwr is A0. SI unaDiriat ad Petroleum Corporation CIVIL GENERAL DRAINAGE Pla Usallil4y: r w j.eti L I?* :AIL: ID: PI, 44 II II 'fit LATHAM G.A5 PLANT » tic LAT-CS-00505 I Cr '3 r� I N. . i'� :, I <414c `.yam R - I i « I. I r fittessi Meer - U Y` I II is 1: - Ill • T Q 1.1 Y t 1 F l 1 - I i. / TOPSOIL STOCKPILE •.mss <ti S 4 -,.;,r,. li s S 1, `^Z. / i Semi W i r i ` + 1 I~ ,erg +. ' W - , L7�tifEkFiFAD pia+ _GAsure O ft 3180{i 1 'v I J l (TYPICAL) cT LCJtL1 ��`_ s in I 11‘Mil rd 4u ,� Co '�. V '. a`a' — __ ' o EIS. 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Y 4,436?- I�jw . 1N 48,65.50__• _- - _ i ------ t i i Yr ir �.. _ _ -- • I ti ,EXTENO DTTCM IK re - 1 _ al 6 - t - I Ii TO DAYLIGHT -_ _ _ � % 411' DG '17400 et-eii - f' -> '- ' ' i MAT€ULPNIE E 11500 SE G '-` Y dele,-'fi itILL _ X I I t_ 1 -..a. _ - N 3 ;)00 ' �= _ -�' - _ - -'--- _ = �i t -- ';,.I - rsess - r.. _ rf rw.z_ - `� . - _ r _ r- rl J- �- _ J rl I 1 -mot__-t. _-, _ - }' r -wr/` • -' — - - I -- r' _ E 14110 F 147D0 ra r� ' II‘ j.i c , _O.q lit a i IN Son M 7l90 laIL _______ - o1i gal iy Iir Mini �! . Di 1u 1 Li u� 1 ty sit y lu su us s4 I i NOTES L LEGEND 1, FOR GENERAL GRADING NOTES WE ,dR.Awi+1'his-rs lAT-CS-002C? AN ti, Lacer -ICS -0011.0 2 ,`1`I- ` . - gxrsnNQ MAJOR .COWT x* 13111 �i , 7. IHIC4lklaat l'E 1l�tla t�nAa ifs WITS THE FOLLdi'1NCt� DaA4�xwr 5110 KOOILISED MAIM CONTQ11R ! 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J' v T r1i111,111Y•i. _— + =s.... r` 1M x1 71;93 •. _.r1. �. _t�J f " Jts f-" li 1 I � 1.�:_:''..' g1-4 I 1YY1ti +9 Me r G A.'.�Yt7 3030 � - — � OIMET �iT01A I - i - - '�'_ -. - �., � N'�39q.8f9 IAA Flt35:2 S V1i1aR ��` N36 MIS I IuCJNi[1 11< wnTH I11t≤ _ 31 ' N 3 8 tl13 F_ ri7 l,22 :3 FENCE :. b'1ieiOf giliz-rri CI E 11I�Ar,olo- 4WD/ OW 1 lags 1 ` F 12 2 41 h ,, E t � 2 35' . Yd1WMTLIPFKAIDE'1ti�6♦ 'rwr Et. 4 OP 51 .� , t1 ft CE 6Eit9W rE - *� .. N 381411511 i N 111906 ti•Aii _ hi -�_ 1&iI+,r MAIMS EilEal ' _ i GMT TYPE 0 �t E 19 NA ID - - El 1 SLIM ) FORMA! FAD 14111401,W __." INLET 5IRLCIRK 1; EL 191)535 ' G 1ti1 PEL '1 • �rl a----1 EL 1 5E l �`, REF1H-1Ulla (3tT 9 RIP RAP FIVICOM %IAAa1CROPOOL BTU MTH MOP J CHANNEL 19fifiCd4l. • MC 58 A 72 3.e4�;6,J t 35 ie•�' I t —' — 11111951.7x1 '' - ,_ EI.a 0 0 .i, r E a1.' 21 N i. L.. al • E 11 $11s,.≥!9 ELF Eirwaas aunts; eV% \ r � T. CHOW IN +4 EOM `1 'ti 7 f , - , — _ —_ — � — •_ -r. f 311 RI 1.43 r �'• y .� - t- J,�i . _ - e I �.. <r'. r y, 1!LlITAI "a 4 :' }, . � �� ' C 3. V T I6 i; -TARE *'U ≥V1.i]PE 4 � 1 si. ! -,-..:- .-- tor- zr RCP �—.I� I a I ^moat' 486?-,---.„„_„.„ e 1 MEW= 1i19t91im �`ti a 1 itIM.StO r -' ,11Ei1A nr a. 0 jam ----- r E ini'.11 ff Pe boa 1. it �''I E111111417 BOTTOM Eli Pan N313 39131 i N SOU* B0113.1 E 12 13110 — 1 n3s la I � i 1 YW.a Elt#91114,1 `. _ I IL \h _ ♦ -‘4,,,,;,, i�� p fly. '� 'Y4.TTLRt1 iG *it f�( � � e CS.1<li� (Nk P N311;4040 E17 HIM 11 E ti !.Zl® `�_ CAM I Ql - 1 t — ve la• ,. !�$ Lethal Sieve 6rtulra REMI mama Ela►A1C�1,1F1 M. Er 1 to 1 Cg t nn PLAN - DETENTION POND F .-111t II,I7 0 6O 4353 70 0 ! 16 oa E rz MOO as =' = r ",fig 4.34 4F 17 9 102 I 105.30 1114466.21 ' 4k r„ , 0 70 45+9.410 4 764 11126,50I I.1 I I 1 5+0 4WD 20 26754 12 r#i 10 i , I B 4 .:80 411d66 �'9t5Th 10 a d, __,.- 5 zoo 4ei.Qe oats d 'I - 6' TOPSOIL OVER t,t�-+ 5 'RTPR - 7.0i BERN I L i 244 - 4881:1(4 9 16476 I S34d :30 71W'f]CY M BURIED . 13E1fit J`d) OORDINATIES TRUNCATE? I TO +41 1I1_ 3 1 W 2a•" irmtodasS �. a'f = -- — I D0 EhAVE aeiN01 1713 AN.L a 1]4 Ma i.76 61$2.3 e431441 1 32 9 u -i1 SWIM SPILLWAY E1� -#1 x 5,25 . t I IN _ � . - _ .t NORTHING COORDINATES Jill mai @¢ col mess SLOPE 'Pi ; - ,I. h _ t ' �- � r�.,_ F"1;a'1'11? Q� 'r�gai — �- � ,(�/{ O yL I J� 3,300,000 1"�� iRI',1`±' ALL .- —Wet 144 s _'.`. � _ -+t _ QMM I t 71� � <FI .> SO t .60 R;1F�1 ,� `W ,...< , ' , EA TI UG COORDINATES. 710 1690I5. OVERFLEW 510E l� 4 486,1 410 1D696TD696 SC EXA-MME! —4-01,.21- i� iQ COMPACTED Eta F7,1uCWfliLL +— 700 7000 60MPA.1'TEU BII+CIEnILL aif t13,i aka as }! 5 j 31.12 WQ IOC* r, Clomp E i s E 33 7 5110 6 a 7O 4ttias00 '19f07`'5 I - a1.1b7 9.4 71 - s 44 I 1 SPILLWAY ,, 42064 f 7a reeboard ► w i T. '' tiwelt FORE$+1Y Diw� -- N3* 13 t41IFF r' KOPE t yI RAW .-43 La aw a! De twvunw Band `r ■ :A19 (�A TOP a t 48rnhi X114 4 fly hotA 13 1 EL4i�,1'3 4 .. h Know wttat'st?P.i my., 41 rtit. - I , < tir - , 1� Gall tieim Iv] rii . 1 i+• • • - <w < , i 11104e0 a n lfi,�,�y!' ' r i- Eaa 1i�>5��ate f 1 Ii s_1 ' tIIii 1 ! . 1...- Iii N P G i2 14723 "4`•��.-ya! 6 -4 StIQ 1 , a e �. Q'r aW ad U YYPi 1 ./PC S e ablate- EiYirr'1 - ;i.•, I :f(`1�►____ _ , 31 i -- 17"----= --• _ < .� 4'! - Friati i PIS _ 1i 13.33-.11 BERM�� N:919'983 7!f15! I TOPE 4 E{:1 f131a F CONCRETE TRIO LE CHANNEIL - ,' t - _ I 1 It 7.. J AISAI ill �1v �►1Q Ian 14yi4!�ft 1 co! � � 4 F. U 1301:l3 - - - - - - � 1FORJaOt t, Irani _ - - IL <�1 � leatimensS •tE *Wulf CV hIMS& IMe .. H 4 �� 1 ��.'� BEf1Yi!I wins,VIN RAP Iri711pItr1 LR,a 4• ��.., i_ N Samuel Engineering C OnIYvh lairit 'star* Sir' l _1x. ' Et A RA 25 cirri w& les •1, • •, 'a,, •_ ..'F C77 �10hl1 'Yl tale, '4Y66ti1RT, I CiL GENERAL DETENTION POND' NOTES &DETtILS d� _ _ �^ J J" �f _ `- _ Pte troleum Corporation 1-r I i1 �11 -„�N Nor j sasmoda it ;yam luhTHilN GASP'Li PLANT ' tiskri MIL 11'11.: , .�. -�~ i, WY,!. —` , r.t�`� -�d w��► 9'. I i. p F tsi4b.Ii 77I�.11 if l i.. �a iI .i - s 1s,y-. t, 1' ii..L+I�a-.+-'+t �',iR.k".'�'i4 n- s" 1 rr 24` W.ER .77 1�' . �- -'� _ -_- - p pIICTOp PLATE IEp PIPE OUTLET -1 i lQ l��_-JW - - _ a' l�1 4.14 1 I • r 1, 1 , 1 _�S.f� - L� .+ - -- t OE INt ?. saOWE _'�� ! , t Sat STD.. DWG. PA -604-1 I EL 48IbIt;9S — TRASH CUTStt]E wan sTAM nlw INLET • "; 4tE Fil R PLATE i . GRATE 42e GR.AT' R Q.DI �#�` _ 1 1 . . Wfli c STAINLESS STEEL _'�' - 11� . ANCHOR CBOLTS. BOTTUM GF - �1 ELL TrON 41159 Mi -- N l �•�' .' R _ 16 I [ 0 TIP_ RErMr01RCEMENY ' 4 �` IRATE l r` 1 %�I . n+ MS," 6. 4. / to WAITER QUALITY eli 5 YR, ORrFtt PLATE (i!Y°5tDE ) — LH- ,R. . - de IBM COMM enuncr —T Trask' Hack la R:OV FL tiw—' - +I I�IEL�si�ret� z PLATE r3Rtrl� PLATE ;INSIDE 1 ,— IMO CONC. SUITE r AND >= 1, 1 ;IDES ONLY (0# EXPOSED) INV, IN 46,56_E.D a •`: 2,0% SILK fit RQNP OUTLET S I IdfJI TURF 15O14URIC ..r 1.1S }i le ;WWII Toy 'ter ' . . }� - , `w - �..._ t - I `•-- 24 It _ _ rI+ 4' LE&N CONCRETE -- WAS Fl PAIY. OUTS ISE ,_ , L. L'-0`" OPENING. 61 P N +' No LVTLET SECTION u7 3dlvxli•Qp 1.�I' ga it —se 11 C TYPE L RIP RAP t JII- v +j l k • ,'�'� j -_ _. f .I� �1 I ." y' ■ ji '—'O. ilf 1�_- —'4 .1 C—Lia. H' MOPE a' PLATE •INDO — RAb r FORMAN Ha k le- O UT Ic H .FOREBIAY' BERM too YR. ws.L. TOP 411 al 11-j�_.m.._ US FALTER WELLS BEEN WTT}6— 1 ' EL � OF ..� + c9) YtE E MOE. ILI3'x- OPENINGS AL�TINEEN WIRES, L'E D�''a+�T4�` M o..S' -�`' t. -- _ SUPPORT RUDE ON I' CTRS, '` TOTAL MACK THICIENEsARASSr ''' m( _. - - --- i xN° Jr 1" �ryGt_GI'NI .K . YL R V4 1TriA 20 *Ain T.D•fi'AMM:EL. 41�iEF E:,$1- II164. STEEL FRAME EL1466,,1A l 41'citi-J,s_fl r -a f V V I lisle■p: lie9.e`JI y4 iE 1 C 1 el 1 � el II., in �I G • rfjl .� F 'iee:. P C6, CHANNEL 44 SIDES) - . ill {'• a PI' 4 F ■e11aeL : �. eser t .. _ 9.i " I 11 1 � ; ETE LEAN' C_ONUR — . , -' d C:,::o N. _ BLO: IRIS MILOU 411511 •'�-11 I . OPEN 5 Et 0 _' — P e Bin EL 4$ 04 NOTES - l s _ •; =.- , A ME I VD I ILA. MILES C ' �'' •J TRASHX SSA*UL BE r4O C USING . ; .. CONCRETE . acs, +,. - V. - ., — STAINLESS STEEL (tAf�41MAfIE AND PS©VITlf17 I ` eel WITH (ENGEDAM LOCKABLE DA BOLTED [}7►ENITMr(3 Er HOPE -A x' D.' i S s ' ASS PANEL - "sia'�iNLE55EELI 4)t' I. 1 Ii" Z+ 'RACKS SHALL BE ALUMINIUM CR STEEL �!.�� pS1T�yE.E1�L� TRASH RACKS RE KM DIP MAY SMALL GALY MIZED AND BE (I HOF POWDER COATED PIER GALVANIZINC,4.7ffiv FORE BAY 8ER''i1 ENTRANCE POND OUTLET SECTION WC & 10 -YEAR ORIFICE PLATE Il i r^ .4, is,. i W#.'I'4, >r•'I- �F _ e S. G ECREBA)? PAP fr am 07 NYS RwiYE�14 Ell ,� Samuel Engineering. ..�74er aIti.iotte . !SIiMEeta a1'l Fonalma CAN kuSs WiAi tale tarn vas is obi tatskit Pa ell' ►III&ma Ifl1Wn&,e • CIVIL GENERAL ►L J., ...---'''''..C. • le ,.1 DRAINAGE NOTES & DETAILS Petroleum Corporation ..„1 1_ .1 -See Alt MR: _.Svt I e -f { rK i I_ , 1 P. . �� LAPLANT l� RAW HIP C IMICRN wain _> ., r.7 R 161 I Z� C 11. vs NO inn r i+� LAl - S ,,,, ' i, • r 4.7 2 1 3 I Samuel Engineering We Provide Solutions 8450 E. Crescent Parkway, Suite 200 Phone: 303-714-4840 Greenwood Village, Colorado 80111 Fax: 303-714-4800 anadarlica Orig./Lead Eng.: Project Engineer Approval: Project Manager Approval: Client Approval: Petroleum Corporation DOCUMENT E -EL -105 LIGHTING DESIGN BASIS FOR Anadarko Petroleum Corp. Latham Gas Processing Plant 17128-01 L.Ohl /I.Miley Date 10/20/2017 Date Date Date Rev. No. By Revisions Approval Date A LTO ISSUED FOR CLIENT REVIEW IM 10/24/2017 B LTO ISSUED FOR CLIENT REVIEW IM 10/30/2017 C LTC ISSUED FOR CLIENT REVIEW IM 11/10/2017 Engineering Project Controls Estimating Construction Management ANADARKO PETROLEUM CORP. LATHAM GAS PROCESSING PLANT PROJECT NO.: 17128-01 DOCUMENT E -EL -101_1 LIGHTING DESIGN BASIS REV. C, DATE: NOV 10, 2017 PAGE 1 of 3 1.0 GENERAL DESCRIPTION This design basis defines the basic criteria of outdoor lighting design and operation at the Latham Gas Plant, located in Weld County, Colorado. In an effort to reduce light pollution, the outdoor lighting system for the Latham Gas Processing Plant will be designed to comply with certain elements of the International Dark Sky Association standards. The outdoor lighting system will be designed to supply a lower level of illumination when unoccupied. Where possible, it will minimize the amount of light directed upwards or away from equipment, and wilt be engineered to avoid over -illumination. Fixtures will be approved for use by the IDA where possible. For safety purposes, when outdoor areas are occupied (for maintenance, inspection, etc...), the "Standard" lighting system will be engaged by an operator in a control room. The "Standard" lighting system will also be used in indoor areas. Also, to maximize safety for Anadarko's operating staff, lighting throughout the facility will be consistent in color, whether indoors or outdoors. Lighting shall be specified as LED type with a daylight color rendition (corresponding to a color temperature of 5000 degrees Kelvin). Yard lighting for the adjacent Anadarko -owned Latham Substation will be designed to be off except when operating or maintenance personnel are present inside the substation yard. However, when maintenance or troubleshooting is required, yard lights will be turned on and may be aimed upward to aid in investigation of overhead lines and systems. 2.0 CODES AND STANDARDS The lighting design and installation will conform to applicable sections of the following codes and standards in effect in Weld County, CO. • NEC National Electrical Code, NFPA 70-2014 • NESC National Electrical Safety Code, ANSI C2-2012 • IBC International Building Code, 2012 • IEC International Energy Code, 2006 • All applicable local codes and standards Equipment,materials, components and function swill be designed, built, rated, tested, applied and will perform in accordance with the latest applicable standards, requirements and guides of the following: • ANSI American National Standards Institute • API American Petroleum Institute • ASME American Society of Mechanical Engineers • ASTM American Society for Testing Materials • ICEA Insulated Cable Engineers Association • IEEE Institute of Electrical and Electronics Engineers IES Illuminating Engineering Society Samuel Engineering We Provide Solutions ANADARKO PETROLEUM CORP. LATHAM GAS PROCESSING PLANT PROJECT NO.: 17128-01 DOCUMENT E -EL -101-1 LIGHTING DESIGN BASIS REV. C, DATE: NOV 10, 2017 PAGE 2 of 3 • ISA Instrument Society of America • NEMA National Electrical Manufacturers' Association • NFPA National Fire Protection Association 3.0 LIGHTING DESIGN Lighting calculations will be performed for both lighting system layouts using AGi32. Lighting installations on the "Standard" lighting system will be designed to provide average in- service illumination levels at working level (30" above floor) as indicated in the table below. Lighting lamp types are also indicated. Location Standard Foot- General Foot- Lamp Type Candles Candles Compressor Buildings 25-35 - LED 5000K Process Areas (Indoors) 30-35 - LED 5000K Process Areas (Outdoors) 5-10 0.24 LED 5000K Electrical Equipment Room 25-30 - LED 5000K Control Rooms 60-70 - LED 5000K Lab Areas 60-70 - LED 5000K Office — General Areas 60-70 - LED 5000K Warehousing Areas 20-25 - LED 5000K Equipment Laydown Yards 5-10 0.24 LED 5000K Shop Areas 40-50 - LED 5000K Restrooms 20-30 - LED 5000K Walkways and Stairways 15-20 0.2-1 LED 5000K Building Entrances/Walkways 540 0.2-1 LED 5000K Outdoor Equipment Areas 5-10 0.2-1 LED 5000K Substation 15-20 0 LED 5000K Parking Areas 1 1 LED 5000K Truck Loading Areas 5-10 0.2-1 LED 5000K NOTE: LED = Light Emitting Diode General outdoor lighting installations will have reduced light levels to the extent possible when unoccupied, allowing for surveillance and safety requirements. All lighting branch circuits will be switched from their respective lighting contactor / lighting panel. In addition, the standard lighting system can be turned / off from the control room touch screen. The general outdoor lighting fixtures (not the standard maintenance lighting) will be switched from a photocell controlled contactor. The contactor will also be equipped with an H.O.A. switch for manual control. Fixtures will be aligned and shielded where possible to prevent light from creating a nuisance in Samuel Engineering We Provide Solutions ANADARKO PETROLEUM CORP. LATHAM GAS PROCESSING PLANT PROJECT NO.: 17128-01 DOCUMENT E -EL -1O1-1 LIGHTING DESIGN BASIS REV. C, DATE: Nov 10, 2017 PAGE 3 of 3 adjacent properties, and to minimize the amount of light directed upwards or away from work areas. Where possible, fixtures will IDA-approved. All lighting will be on standby generator power via critical power MCCs. Within EEC buildings, 1/3 of lighting fixtures will have battery back-up, and will have additional battery -backed frog -eyed egress lights above each exit. Light Control Philosophy: The Latham Gas Plant will be designed for (4) Standard Maintenance Lighting (occupied space) H.O.A. Controlled Contactor Systems, one in each Electrical Equipment Center (EEC). For the Latham Gas Processing Plant, we have (4) EECs: Cryo Plant 1- EEC -31 Cryo Plant 2 — EEC -32 Inlet Area — EEC -61 Standby Power — EEC -63 A separate H.O.A. Controlled Lighting Contactor System will be added to each EEC for general outdoor lighting as to maintain consistency of design, but each of these systems will be of a smaller size and lower power consumption. Normal Night with Unoccupied General Outdoor Areas: With the H.O.A. switches placed in AUTO, the general outdoor area lighting system will turn on I off via the photocell controls (nighttime r daytime). Maintenance Condition with occupied Outdoor Areas: With the H.O.A. switches in AUTO, the standard lighting system will turn on ONLY if the control room operator (on the control screen) activates the standard lights. The operator can select which EEC standard lighting contactor to turn on based on the location of the maintenance activities. When the maintenance activity is completed and the area is unoccupied, the operator can deactivate the standard lights using the control screen. The general outdoor area lighting system remains on. n Operator can turn on / off any of the lighting contactors located in the EECs by selecting either "Hand" (turn on lights) or "Off" (turn off lights) on the H.O.A. Switches. Normally, all the lighting contactor H.O.A. switches are placed in AUTO. 4.0 REFERENCE DOCUMENT LAT-EL-00301, Latham Outdoor Lighting Plan. Samuel Engineering We Provide Solutions Samuel Engineering We Provide Solutions 8450 East Crescent Parkway, Suite 200 Phone: 303.714.4840 Greenwood Village, CO 80111 FAX: 303.714.4800 anadarkp2 Petroleum Corporation LATHAM 200 MMSCFD SCFD GAS PROCESSING PLANT OPERATIONS AND MAINTENANCE MANUAL LOCATED IN THE NORTH 1/2 OF SECTION 2, TOWNSHIP 3 NORTH, RANGE 66 WEST, WELD COUNTY COLORADO PREPARED FOR: ANADARKO PETROLEUM COMPANY 1099 18th STREET, SUITE 16000 DENVER, COLORADO 80202 PREPARED BY: SAMUEL ENGINEERING, INC. 8450 EAST CRESCENT PARKWAY, SUITE 200 GREENWOOD VILLAGE, CO 80111 ISSUED AS PART OF THE FINAL DRAINAGE REPORT FOR USR18-0019 REVISION 0 MAY 2018 Samuel Engineering We Provide Solutions 8450 East Crescent Parkway, Suite 200 Phone: 303.714.4840 Greenwood Village, CO 80111 FAX: 303.714.4800 I. INTRODUCTION This operations and maintenance manual is for the owner of a natural gas processing to properly operate and maintain a detention pond that is built to control stormwater runoff on the and reduce downstream impacts from the processing plant. II. LOCATION AND ACCESS The site is located on a 74 -acre parcel that is south and west of the intersection of County Roads 35 and 38 in Weld County, Colorado. The property address is 16226 Weld County Road 38, Fort Lupton Colorado. Access to the site will be from County Road 35. Storm water from the site will be directed into a 2.61 -acre-foot detention pond that discharges into the roadside ditch. The discharge from the pond will flow along the ditch to an unnamed creek that outfalls to the Box Elder Creek, with the ultimate receiving waters being the South Platte River. Tat r �r if `9`41/44:01 41'1> \Yee/ f I. U • ANADARK0 LATHAM PROJECT SITE r a J 1 SEC. 3 s — SEC. 2 SECTION LINE (TV!.) SEC. 1 WCR 36 atailiflall _f -- se„=e r i!again im Ctrp rrnIan LATHAN PLANT 1 1 NORTH (111.= y20001 } 24 i 36't CIVIL GEM€RAL VIcIthIP' PAP? C":••, L• T ILE- ICA.CI13. MC Ii -Lt i2 X . 01131E 7414 t IF�t-Ii SallNora Is. I X r_ as ail Mx it? 1 VICINITY MAP Samuel Engineering We Provide Solutions 8450 East Crescent Parkway, Suite 200 Phone: 303.714.4840 Greenwood Village, CO 80111 FAX: 303.714.4800 III. Purpose of the Facility — General Description The detention pond is designed to follow the UDFCD criteria for an Extended Detention Basin design. A buried rip -rap spillway on the west side of the pond is sized to pass the Q100 that enters the pond. UDFCD requirements dictate that EDB ponds drain within 40 hours, this pond will drain through a water quality orifice, a 10 -year orifice and a 100-yr outlet pipe with restrictor plate. The Weld County Storm Drainage Criteria dictates a detention pond shall be designed to hold the 100-yr storm event volume including WOO/ as a portion of that volume. The pond was designed with a length to width ratio of 2.5:1 and 4:1 side slopes. The pond has a depth from the spillway to the pond outlet structure of 6.55 -feet. There is an 8' wide access path around the top of the pond. OWNERSHIP The Detention Pond is owned by Anadarko Petroleum Corporation. Anadarko Petroleum Corporation Responsible owner TBD 1099 18th Street, Suite 16000 Denver, Co 80202 TBD PROJECT HISTORY The detention pond is designed and sized for approximately 70 disturbed acres to control storm water runoff from a natural gas processing plant. The subject property is an agricultural parcel, which has been used for as a turkey farm, livestock and storage. There are several gas wells on and surrounding the site. The constructed site will be surfaced with gravel, road base, or native soils and vegetation closely matching existing vegetation. PROJECT DATA The design provides the required detention volume for the developed condition. An emergency spillway path is proposed on the west side of the pond, which can pass the Q100 that enters the pond. Samuel Engineering We Provide Solutions 8450 East Crescent Parkway, Suite 200 Phone: 303.714.4840 Greenwood Village, CO 80111 FAX: 303.714.4800 The detention pond will include: • Forebay • Trickle Channel • Micropool poo I • CDOT Type D Outlet Structure • Spillway • Catchment area: approximately 70.2 Acres • Impervious area: 70.2 -acres at 40.56% • Hydrologic soil group A • Storage volume: 7.22 acre-feet (design volume) • 10 -year orifice: g" W X 1.5' for 9.13 cfs release rate • 100 -year discharge will be with a 24" Reinforced Concrete Pipe and a 1.92' diameter circular orifice plate for a maximum release rate of 12.21 cfs VII. Normal Operation Inspections: Periodic Inspections with the attached checklist should be performed after major rainfall events to check for obstructions/damage and to remove trash and debris. Vegetation Management: Mowing is necessary on a regular basis to prevent erosion or aesthetic problems. Fertilizer and pesticide use should be limited in and around the pond to minimize entry into downstream waters. Trash Debris and Utter Removal: Remove trash or debris causing obstructions at the inlet, outlet, orifice, or trash rack especially after runoff producing rainfall events. Mechanical Equipment Check: Inspect fences and fence gates for any damage at least once a year. Structural Component Check: Inspect outlet works, inlet orifice, trash rack, and trickle channel for damage at least once a year. VIII. Regularly Scheduled Maintenance/Monitored Maintenance Reference "Detention Pond Minor Checklist" Samuel Engineering We Provide Solutions 8450 East Crescent Parkway, Suite 200 Phone: 303.714.4840 Greenwood Village, CO 80111 FAX: 303.714.4800 UNSCHEDULED MAINTENANCE Maintenance operations should be performed a minimum of once per year or when the detention pond fails to function as intended. Bank Erosion or Stabilization: All areas not vegetated should be stabilized and revegetated immediately Sediment Removal: Every six months or so, the accumulated sediment should be removed from the bottom of the outlet structure (or micropool). Note: this should be checked and maintenance preformed more frequently during construction. Sediment buildup should be checked throughout the bottom of the pond and removed if sediment buildup exceeds 25% of the original design depth. Structural Repair/Replacement: If the outlet structure, forebay or trickle channel has been damaged these will require repair or replacement. X. References The following criteria was used to guide the design of the pond: • Weld County Storm Drainage Criteria, April 2012 • Urban Drainage Flood Control District, Volumes I and II, January► 2016 • Urban Drainage Flood Control District Spreadsheets UD-Detention_v3.07 and v2.35 • NRCS Soils Map Data (Accessed Online), August 2017 • FEMA Online Map Viewer (Accessed Online), Sept. 2017 • USGS Map (Accessed Online), Oct. 2017 XI. Inspection Report Forms Maintaining Detention Ponds Maintenance Inspection Checklist • Pond: Date: Inspected by: Type of Inspection: Routine U Storm Event (# days since event) General Observations: Is water flowing? ❑Yes ❑ No Standing water? ❑ Yes No Depth: Comments: Any evidence of obstructions or erosion in vicinity of the pond that could affect performance? UYes I INo Pond Conditions: Does the pond sides/slopes/bottom show signs of settling, cracking, sloughing or other problems? ❑ Yes ❑ No Do the embankments, emergency spillway (if applicable), or side slopes show any erosion or instability? ❑Yes No Is there any evidence of animal burrowing or other activity that could contribute to instability or increased erosion? ❑Yes No Is there evidence of encroachment into the pond or improper use of the pond? ❑Yes No Do vegetated areas need mowing? UYes No Are there areas that need to be re -vegetated? UYes No ❑ Mowed today Will schedule mowing Will schedule re -vegetation activities Do vegetated areas need thinning, i.e. cattails, willows, trees? UYes No UThinned today Will schedule thinning Is there accumulation of trash, debris and/or litter to be removed? ❑Yes No ❑ Removed today ❑ Will schedule removal Any signs of vandalism or other activity that could affect performance of the pond? ❑Yes No If permanent pool, any visible pollution? ❑Yes No Erosion at high water mark? ❑Yes No Abnormally high water level? UYes I INo Unusual Algae blooms? UYes No (May indicate obstruction at orifice, or trash rack; verify outlet structure operating properly) (May signal too many nutrients in runoff; identify dog activity and clippings management; will need monitoring) Structural Components: Are the pipes/inlets going into or out of the pond clogged or obstructed? ❑Yes No Is the outfall channel from the pond functioning appropriately? ❑Yes No Is the inflow trickle channel working properly? ❑Yes No Is the orifice and/or trash rack obstructed? I IYes I INo Is the outfall channel, trickle channel or other conveyance in need of repair? UYes No Are the manholes, frames, and covers associated with the outfall channel in appropriate condition? UYes Do any safety features, such as fences, gates or locks need repair or replacement? ❑Yes No Plan of Action: If answered YES to any of the above, the following is an anticipated Maintenance Needs Action List: Total number of concerns: Need more monitoring ( Anticipated schedule to re -visit; identify what will trigger action) (Yes answers) Need routine repair (Approximate schedule for repairs; date of follow-up to re -inspect) Need immediate repair (Take action if correct equipment on site; or contact supervisor) Signature Detention Pond Date Inspected Drainage System Feature Potential Defect Conditions When Maintenance Is Needed Results Performed Expected Or Not When Needed Maintenance Is iA re ne ral Trash Debris and Any cubic about would garbage no If will maintenance. visual less trash be feet equal take than removed can). and per evidence to threshold to fill In debris 1,000 the one general, as amount of part which square standard dumping. all there trash of next exceed feet of trash size should and scheduled (this debris five it is be Trash and debris cleared from site. ❑ Poisonous Vegetation Noxious and weeds Any which maintenance poisonous may constitute or personnel nuisance a vegetation hazard or the to public. No maintenance might danger of normally poisonous personnel be. vegetation or the public where ■ (Apply Any by policies State evidence requirements for or local the of noxious regulations. use of of adopted herbicides). weeds as IPM defined Complete may State required. not or eradication be possible. local eradication of noxious Compliance policies weeds with Contaminants and Pollution Any contaminants, (Coordinate water evidence quality of or removal/cleanup response oil, other gasoline, pollutants. agency). with local No contaminants or pollutants present. ❑ Rodent Holes Any acting of rodent evidence water as holes. a piping of dam or through rodent berm, holes or dam if facility any or evidence berm via is Rodents repaired. destroyed and dam or berm Forebay Micro ' and pool 'p- sediment micropool buildup in forbay or Facility is returned to design function. ❑ ❑ Insects When wasps maintenance insects and such hornets activities. as mosquitoesr interfere with Insects Apply adopted and p p y Operations destroyed insecticides Weld County policies. or removed in compliance Maintenance p from site. with Tree Growth and Hazard Trees Tree access activity vactoring, trees maintenance, growth or interferes (i.e., are not or does slope equipment interfering do not allow with mowing, not remove. maintenance movements). with maintenance silt removal, access If or Trees activities. recycled beneficial do into not Harvested uses hinder mulch maintenance trees or other should be ❑ If identified (Use health dead, a diseased, certified of tree Arborist or removal or dying to requirements) trees determine are Remove hazard trees. Drainage System Feature Potential Defect Conditions When Maintenance Is Needed Results Expected When Maintenance Is Performed Or Not Needed n1 Side Slopes Pond of Erosion Eroded where where erosion. cause there damage of damage is potential over two inches is still for continued deep present or Slopes appropriate e.g., compaction. should rock reinforcement, erosion be stabilized control planting using measure(s); of grass, ❑ Any erosion berm embankment. observed on a compacted If berms consulted erosion a licensed is occurring to resolve civil on compacted engineer source of should erosion. be ❑ Storage Area Sediment Accumulated of otherwise outletting the designed specified condition sediment pond depth or of affects the that facility. exceeds unless inletting 10% or Sediment shape necessary and cleaned to depth; control out pond erosion. to designed reseeded pond if L ❑ Pond Berms (Dikes) Settlements inches If Any to Settling severe works. consulted settlement. settlement determine part lower problems A can of licensed to berm, than is be determine the apparent, amount an indication with civil which the design of engineer the has settlement. measure berm settled elevation. of source more or should four berm outlet of the be Dike is built back to the design elevation. ❑ Piping (Recommend Discernable berm. erosion called and recommend Ongoing to in to water erosion continue. a inspect flow Geotechnical repair and through with evaluate of condition. potential engineer pond condition for be Piping resolved. eliminated. Erosion potential Emergency Overflow/ Spillway and Over Feet Height. Berms in Four Tree Growth Tree creates failure overtopping. Tree height berm berm. growth growth of may which blockage the lead on berm on could emergency problems berms to due piping lead over to to through failure spillways and uncontrolled four may feet the of the cause in Trees small system roots restored. be restoration. should (base should may A less licensed be be left be for removed. than removed in proper four place. civil inches) and engineer berm/spillway If root Otherwise the system the berm should root the is ❑ consulted Pipingerosion (Recommend Discernable berm. called and recommend Ongoing in to to water erosion continue. a inspect flow Geotechnical repair and through with evaluate of condition). potential engineer pond condition for be Piping resolved. eliminated. Erosion potential ❑ Drainage System Feature Defect Conditions When Maintenance Is Needed Results Performed Expected or Not When Needed Maintenance Is Emergency Overflow/ Spillway � y Rock Missing Only soil any out (Rip replaced) in -rap exposure flow one area on layer path five inside of of of square native spillway. rock slopes exists feet soil need above or at native larger, or the top not be of Rocks and pad depth design standards. are restored to Erosion Eroded where where erosion. cause there damage over two of damage is potential inches is still for continued present deep or Slopes appropriate e.g., compaction. rock should reinforcement, erosion be stabilized control planting using measure(s); of grass, �nyerosiot�obser�red berm embankment. on a compacted If erosion berms consulted a licensed is occurring to resolve civil or�compacted engineer source of should erosion. be ❑ Chris Gathman From: Sent: To: Subject: Chris, Keiser, Nathan <Nathan.Keiser@anadarko.com> Thursday, March 08, 2018 12:40 PM Chris Gathman RE: traffic information submitted for Latham Gas Plant The laydown yard will not be temporary, however it will be used to store equipment for the construction and operation of the plant. This means that if need to add equipment that is already permitted as part of the USR we could store it on location until it is ready to be installed. This also means that we could store a piece of equipment that was replacing another piece if not operational and needed to be switched out. Iran happy to arbitrarily assign 5-10 trucks per day as a peak number if that satisfies the question, but our intent is not to have incoming/outgoing traffic from this location. But again, if we needed to store permitted equipment temporarily then we should have the right to do so, which also wouldn't change the traffic associated with construction. Does this make sense? Also, I called Hayley and left a message to call me back to discuss. Thanks Chris. Nathan From: Chris Gathman [mailto:cgathmari@weldgov.com] Sent: Wednesday, March 7, 2018 5:39 PM To: Keiser, Nathan <Nathan.Keiser@anadarko.com> Subject: FW: traffic information submitted for Latham Gas Plant Nathan, See Public Works comments/requested information below re: traffic for the lay down yard., Regards, Chris Gcthm ari 1 X. AIR POLLUTANT EMISSION NOTICE {APEN} Kerr-McGee Gathering LLC (KM ) will register the engines under general permit "GP02", issued by the Colorado Department of Public Health and Environment. Certain equipment at the facility will be not be subject to air permitting requirements, subject to "Air Pollution Emission Notice (APEN)" requirements. For all applicable equipment APENs will be filed with the CDPHE. Other equipment at the facility will be subject to neither permitting requirements nor APEN requirements, due to the low emission design and operation of the equipment. Proposed Latham Processing Facility Section 2-T3N-R66W Weld County, Colorado 23 AIR POLLUTANT EMISSION NOTICE (APEN) & Application for Construction Permit — Amine Sweetening Unit' - Permit Number: F ciiity Equipment TLS_ [Leave blank unless APCD has already assigned a pemait / & MRS [DDj Emission Source AIRS ID: Secii011 01 — Administrative Information Clumpany Name: Kerr McGee Gathering I [Provide Facility Equipment In to identify how this equipment is referenced within your organization.] Section 02 — eQnaated' Action (Check applicable request box ) Source Name: Di Gas Plant Source Location: Section 2, T3N, R67W, Weld County Mailing Address: PO Box 1737791 Denver Person To Contact: Joel Kenyon Email Address: joe:l.kenyoni@anadarko.com Section 03 — General Information NAM Si, or SIC Code: County: Elevation: ZIP Code: 1321 Weld 4870 80217 Phone Number x2O-929-6135 Fax Number For existing sources, operation began on: / ,r Normal Hours of Source Operation: General description of equipment and purpose: PPP Will this equipment be operated in any NAAQS nonattainment area? (wvirwico.lora io.goaticdphe/attainmeat) Or Does this facility have a design capacity less than 2 long tons/day of I -13S in the acid gas? Provide documentation. Feet Request for NEW permit or newly reported emission source Request MODIFICATION to existing permit (check each box below that applies.) ■ Change process or equipment ■ Change company n : . e O Change permit limit Transfer of ownership Request to limit HAPs with a Federally enforceable limit on PTE Request APEN update only (check the box below that applies) • D Addl. N otes Revision to actual calendar year emissions for emission inventory Update 5 -Year APEN termwithout change to permit limits or previously reported emissions 'C)thu For new or reconstructed sources, the projected startup date is: 24 hours/day 7 daystweek 52 weeks/year amine unit with 2 contactors, one rebutter, and one reboiler heater (reported on a separate APEN) 10 01 J' 2018 Section 04 — Amine eetetYin nit EquipmentIn formation Manufacturer: NIA Reboiler Rating: 44.8 MMB Wilk Amine Type: MEAL mAmine Pump Make & Model: Model_ NIA IDEA Serial No.: TBD Absorber Column Strages: 20 stages TEA MDEA 4 of Pumps: Sweet Gas Throughput: Design Capacity: Inlet Gas: Rich Amine Feed: Lean Amine Stream: Sour Gas Input: NGL Input: Flash Tank: Pressure: Pressure: Pressure: 1003 1000 1150 wt. % amin! : 45 Pressure: 1000 Pressure: 150 M M CF/d ay Re q ueste#: 150 psig psia psia psia psia Temperature: Temperature_ Temperature: Mole lowing 118: Temperature: Temperature: Calendar year actual: 100 up 3 D GA.. 151 °F Flowrate: 298 123 °F Flowrate: 300 n. 99.8 Pressure: 60 psia Temperature: 152 Mole loading CO2: J C+F Flowrate: Flo te: O Mono 75 MMSCF/yrr. TAMS CF/yr. gal/min gal/min M°1.¶CF/dav gaihnin 1You drill be charged an, additional APEN fee if APEN is filled out incorrectly or information is missing and requires re -submittal. 2Requested,lues will become prmit limitations. Additional. Information Required: Fig Attach a process flow diagram N Attach the simulation model inputs & emission report Attach composition reports for the rich amine feed, sour gas feed, NGL feed, & outlet s.trcarn. (emissions) El Attach the extended has analysis (includirr BTEX & a -Hexane, i tS, CO2.,2,2,4 Trinncthyhcntane) Yes Yes MI •No ! Don't know FT No Don't know Colorado Department of Public Health and Environment Air .Pollution Control Division (APCD) This notice is valid for five (5) years.. Submit a revised APEN prior to expiration of five -yam° term, or when a significant change is made (increase production, new equipment_ change in fuel type, etc). Mail this form along with a check for S152.90 to: Colorado Department of Public Health & Environment APCD- SS- 1 4300 Cherry Creek Drive South Denver, CO 80246-1530 For guidance on how to complete this APEN form: Air Pollution Control Division: 92 1 Small Business Assistance Program (SEA'): (303) 692-33 l4408 or (303) 692-3175 A PEN forms: . www.coloradoagovicdpheloilgasnerrnits Application status: www.colorado.govicdphe/perinitstatus Ertl Check box to request copy of draft permit prior to issuance. Check box to request copy of draft permit prior to public notice. FORM APCD-206 Fade 1 of 2 Amine MEN. doe AIR POLLUTANT EMISSION NOTICE (APEN) & Application for Construction Permit — Amine Sweetening Unit1 Permit Number: Emission Source AIRS I[ Section 05 — Stack Information (Combustion stacks must be listed here) Operator St ]I No. Stack Elevation feet Base Stack l-3eiglit Ground (feet) I i s charge Above Level Temp (°P) Veloch7 ( sec) Moisture (% Flow> to (ACTM) ►t 4870 I Direction of stack outlet (check one): Exhaust Opening Shape 84 Size (check one): Section 06 tack _(Source, if no combustion) Location Datum & either I-atfLong or HIM) Horizontal Datum (11AD2 7, NADU, lif Zone UTM Easting or Longitude l M Northing Latitude or Method Location of Collection Data for (e.g. map, ) (1 or 13) (meters or degrees) -- - - (meters or degrees) -- tPS, (ThogleEarth) _ -- - - - - - ��j��j�'7� • ■ G ( l nfY�' Syr' 04. !' 4, .26) (] map Vertical ■ Vertical with obstructing mincap • Circular: Inner Diameter (inches) = ■ Horizontal ■ I)own Other Length (i ichas.) = O Other (Describe): Width (inches) Section 07 Control Device Information,(Indicate if a control device controls the Hash tank and/or regenerator emissions) - RU used for control of: Iril Combustion Device used for control of` Still vent Rating: 27 IVIMBt fir Size; Make/Model: Type: recuperative IN/lake/Model/Serial #: TB? Requested VOC & BAP Control Efficiency: VOC & HAP Control Efficiency: Requested: 99 41 -10 Manufacturer Guaranteed: 99 Annual time that VRU is bypassed (emissions vented): ,ro Minimum temp to achieve requested control: 1400 9F Waste gas heat content: 5 Btuisef Constant pilot light? Yes ❑ No Pilot burner rating: MINIBtuthr ,O eg Describe Any Other: Flash tank vapors will he routed to a low-pressure gas gathering pipeline. In the event that vapors cannot be routed to pipelines vapors will be routed to the _process flare. Section 08 - Emissions Inventory Information Emission Control Information on Factor D©euriteritatiun. attached Data year for actual calendar liar. emissions below & gas throughput above e.g. 2007): Control a Device Description Emission Factor Estimation Method or Emission Factor Actual Calendar Year Emissions- Requested PeL.inittcd Control Efficiency (% Reduction) EEmissions' c Uncontrolled — - Basis aait 1, ncontrrolled Controlled I Uncontrolled Tons Year - Controlled (Tons, ear) Pollutant r Primary Secondary Source (Tons ear) (Tons/Year) , -- - -- - - -- t� 121 4 1. 2 Thy ba �j �7 + AP VOC ��yy ��ryry��ii_ 0-4174 i l �yy;; ,,��77�� 1�11 btu m. an. -42 13.0 13.0 AP -42 Nod AP -42 t.t.N 2 IWMMhtu 1I. 1 CO 0.001 IbThielT Ilitu 1.1.1 tl.0 mass balance SO2 --- - WitS Identify in Section 07 - - 1b/P4 ;btu balm. - - '-42 Benzene ene m. - 1b, 1r'Ii�r'Ibtu l ;. l .1 baton. AP Toluene tn. + -42 0.02 lb/br 7.4 0.07 mass balance Ethylbenzene 21.2 2I mass balance ,ylene mass balance I 0.8 0,24 ' n -Hexane Please use the APCD Non -Criteria Re I ortable Air Pollutant Addendum form to report pollutants not listed above. 'You will l e charged an additional APEN fee if APEN is filled out incorrectly or information is missing and requires re -submittal. I Annual emission fees will be based on actual omissions reported. here. If left blank, annual emission fees will be bused on retwosted emissions - Section 09 8pplm nt Certification - I hereby certify that all information contained herein and information submitted with this application is complete, true and corareet. WWI 7. Date ette Signa e o Person Legally Authorized to Supply Data Joel Kenyon Name of Legally Authorized Person (Please print) Title HSE Representative Page 2 Of 2 Amine APEN.doe General ADEN - Form APCD-200 Air Pollutant Emission Notice (APEN) and Application for Construction Permit Alt sections of this APEN and application must be completed for both new and existing facilities, including APEN updates. An application with missins information may be determined incomplete and may be returned or result in Longer application processing tires. You may he charged on additional APEN fee if the .OPEN is _rifled out incorrectly or is missing information and requires re -submittal. There may be a more specific APEN for your source (e,gg. paint booths; mining operations, engines. etc.). A list of specialty APEINIs is available on the Air Pollution Control Division (APCD) website at; www.colorado.govicdphelapcd. This emission notice is valid for five (5) years. Submission of a revised APEN is required 30 days prior to expiration of the five-year term, or when a reportable change is made (significant emissions increase. increase prodLiction, new equipment, change in fuel type, etc), See Regulation No. 3, Part A, ll.C. for revised APEN requirements. PermitNumber; AIRS iD Number: [Leave blank unless 0CD has already assi?ncd a permit yfi and AIRS ID] Section 1 - Administrative Information Company game': Site Name: Kerr McGee Gathering DJ Gas Plant Site Location: Section 2, T3N, Re6VV, Weld County Mailing Address: (/nc rude l7p Code) Portable Source Home Base: PO Box 173779 Denver, CO 80217 Site Location County: Weld Naacs or SIC Code: 1321 Permit Contact: Joel Kenyon Phone Number: 720-979-6135 E� (ail Address2: joelticenyon@anadarko,cnm rise th full, leg& company name registered with the Col. rado Secretary of State4 This is the company name that wilt appear or all documents issued by the APCD, Any changes wall require additional paperwork. 2 Pernits, exemption letters, and any processing invoices will be issued by ARCO via e-mail to the address, provided. Fr2rm APCD-200 - General APEN - Revision 1/2017 1 r COLORADO Drjnmntat af Uc l�.a1ibb IrmillitFt N Permit Number: AIRS ID Number / [Leave Wank unless APCD has already assigned a permit ;V and AIRS ID) Section 2- Requested Action NEW permit OR newly -reported emission source (check one below) 0 STATIONARY source IN PORTABLE source - OR MODIFICATION to existing permit (check ecch box Mow that apples) Change fuel or equipment ■ Change company name I I Add point to existing permit Change permit limit Transfer of ownership' ■ Other (describe below) e OR - APEN submittal for update only (Blank APENs will not be accepted) - ADDITIONAL PERMIT ACTIONS Limit Hazardous Air Pollutants (HAPs) with a federally -enforceable limit on Potential To Emit (PTE) APEN submittal for permit exenipt/grandfathered source Additional Info a Notes DJ Gas Plant This APEN reflects a proposed process flare at the proposed 3 For transfer of ownership, a completed Transfer of Ownership Certification. Form (Form APCD-104) must be submitted. Section 3 - GeneraL Information General, description of equipment and purpose: Air -assisted process flare Manufacturer: TDB Model No.: TBD Company equipment Identification No. (optional): El For existing. sources, operation began on: For new or reconstructed sources, the projected start-up date is: Serial No.. TBD 10/01/2018 1 Check this box if operating hours are 6,760 hours per year; if fewer, fill out the fields below; 1ornal Hours of Source Operation: hours/day days/week weeks/year Seasonal use percentage: Dec-Feb25 Mar -May: 25 Jun -Aug: 25 Sep -Nov: 25 Form APCD-200 - General APEN; - Re -vision 1/2017 2 i CQLORADO rinks vncu tcf t b Permit Number: AIRS ID Number: � [Leave 'Wank unless APCD has already assigned a permit fi and AIRS ID] Section 4 - Processing/Manufacturing Information Et Material Use I Check box if this information is not applicable to source or process From what year is the actual annual amount? Design (Specify Rate Process Units) Description Actual Amount (Specify Annual Units) Requested Annual Permit Limit4 (Specify Units) Material Consumption: total combusted gas 85 Cf/ r 85 I i f/ r Finished Product(s): - 4 Requested values will become permit Limitations, Requested linit(s) should consider future process growth. Section 5 - Stack Information. r Geographical Coordinates (Latitude/Longitude or OW) 'RG384 (-104.74, 40.26) Check box if the foaming information is not applicable to the source because emissions wilt rot be emitted from a stack. If this is the case, the rest of this section may remain blank, Above 9isc1ige Ground 'Fee Height Level Temp, r Flow Rate (AC FM) Velocity (ft/sec) Operator Stack ID No. F -I ""1410 feet 60.18 comp'. Indicate the direction of the stack outlet: (check ow) • Upward 11 Horizontal • Downward I Other (describe): indicate the stack opening and size: (check one) • ■ Circular Interior stack diameter (inches): Upward with obstructing raincap Square/rectangle interior stack width (inches): Interior stack depth (Indies): Other (describe): Form APCD-200 - Genera. APEN - Revision 1/2017 COLORADO L+r$atCMttMut kiwi b 1.iiri.martini* Permit Number: AIRS ID N• rnber: / [Leave blank unless APCD fias already assigned a permit tt and AIRS ID] Section 6 n Combustion Equipment Et Fuel Consumption Information ■ Check box if this information is not appLicabie to the source (e.g. there is no fuelaburning equipment associated with this emission source) Design MM5TU/fir, input Rate Actua( (Specify Annual Units) Fuel Use Requested Annual Permit Limit4 (Specify Units) 85 scf/y! 12.44 From what year is the ac.tGtai annual fuet use data? Indicate the type of fuel used5: SI ■ ■ ■ Pipeline Natural Gas (assumed fuel heating value of 1,020 L3TU/SCF) Field Natural. Gas Heating value: BTU!SCF Ultra LoW Sulfur Diesel (assumed fuet heating v&&ue of 138,000 2W/gallon) Propane (assumed fuel heating value of 2,300 .BTU/SCF) Coal Heating value: BTU/lb Ash Content: Sulfur Content; Other (describe): Heating wattle (give units): Requested values will become permit limitations. Requested limit(s) should consider future process growth. If fuel heating value is different than the Listed assumed value, provide this information in the "Other" field, Section 7 r Criteria Pollutant Emissions Information Attach all emission calculations and emission factor dccurnentaticn to this APEN form Is any emission control equipment or practice used La reduce emissions? II Yes • No If yes, describe the control equipment AND state the overall control efficiency (% reduction): Pollutant Overall Collection Efficiency Overaiil OS reduction Control in emissions) Efficiency Control Description Equipment TSP (PM) P14 P7.5 SO> NiO Co 95% 95% '/OE combustion Other: Form APCD-200 - General. ADEN - Revision 1/2017 COLORADO bspsttiibmLL.iI RUr M � nniq Permit Number; AIRS ID Number / [Leave blank, unless APCD has already assigned a permit it and AIRS ID] Section 7 (continued) From what year is the following reported actual annual emissions data? Use the following table to report the criteria pollutant emissions from source: (Use the data reported in Sections 4 and 6 to calculate these ernissionst) Pollutant Uncontrolled (Specify Emission, Factor Units) Emission Factor Source OP -42 etc) Mfg. Actual Annual Emissions Requested Annual Emission Lirnit(S)4 Permit Uncontrolled Controlled6 Uncontrolled Tons ear Controlled Tons ear) Tons/ ear + ronsi year TSP (PM) P is 6.08 IbMilMscf AP-42c^6MSElnit°cix1 % 0.4 PM2.5 2.5 912 I bM4 !Vise! +t in6 _hl l tht% K iSS 0.4 S 0 y 1.6E-3 (b/hr �' bel®n a 9+0C% FRS cone, 0 NCx ;1068 IbilMI\Abtu AP-42ref1275titu1lcf .7 CO 037 Ibf 'lbtu AP42 @ 1275 Muasa 20.2 vac 7.7 Ib)hr •AP42&mass balance 33.6 1.68 Other: 4 Requested values will become permit limitations. Requested limit(s) should consider future process growth. 6 Annual emission fees Mt be based on actual controlled emissions reported. If source has not yet started operating, leave blank, Section 8 - Non -Criteria Pollutant Emissions Information Does the emissions source have any uncontrolled actual emissions of non -criteria pollutan-ts (e.g. RAP- hazardous air pollutant) emissions equal to or greater than ■ Yes 250 lbs/year? a If yes. use the fnllmAt ng table to report the non -criteria pollutant (HAP) emissions from source i�lumber CAS 8 Chemical Name (specify Emission Factor u titS) Ec�rriss.ic�n Factor Source (AP -4.2, Mfg, etc) Uncontrolled Actual Emissions Otis/year) Lp Controlled Emissions Actual u � d eaF 5 Overall Control Efficiency 6 Annual emission tees will be based an actual controlled emissions reported, of source has not yet started operating, leave blank. Form APCD-200 - General ADEN - Revision 1/2017 5I Drprimal:tor Pubic COLORADO � w Vitoan�rml Permit Number: AIRS ID Number: Weave blank unless APCD has already assigned a permit E' and A RS iDJ Section 9 - Applicant Certification I hereby certify that all information contained herein and information submitted- with this aapplication is complete, true and correct. Sig lature of Legally) Authorized Person (not a vendor or consultant) Date Joel Kenyon HE Representative Name (print) Title Check the appropriate box to request a copy of the: Draft permit prior to issuance Draft permit prior to public notice NI (Checking any of these boxes may result in an increased fee and/or processing time) i his emission notice is valid for five (5) years. Submission of a revised APEN is required 30 days prior to expiration of the five-year term, or when a reportable change is made significant emissions increase, increase production, new equipment, change in fuel type, etc). See eguLa.tion No. 3, Part A, II.C. for revised APEN requirements. Send this. form along with $152.90 to: For more information or assistance call: Colorado Department of Public Health and Environment Air Pollution Control Division APCD-SS-B1 4300 Cherry Creek Drive South Denver, CO 80246-1530 Make check payab'1.e to: Colorado Department of Public Health and Environment Telephone: (303) 692-3150 Form APCD-20O - General APEN - Revision '1/2017 Small Business Assistance Program 303) 692-3175 or (303) 692-3148 Or visit the 4200 website at: https: //wwwrw.colorado.gov'/cdp,he/apcd COLORADO Pteu iunr 'It et kiYk 7i,� AFUT r re r rjfir,' I III AIR POLLUTANT ANT II SION NOTICE (APE.N) & Application for Construction Permit = Fu Permit Number: I -ewe blank unless APCD has already assigned apem-nt EC AIRS ID] Facility Equipment ID: Section 01 —Administrative information Company Name: Kerr McGee Gathering Source Name: DJ Gas Plant hive Colnporient Leak F IiN isslons I E ission Source AIRS ID! [Provide Facility Equipment ED to identify how this equipment is referenced within your organization] Source Location: Section 2, `f3N, RGGVV, Weld County Mailing Address: PO Box 173719 Denver, CO Person To Contact: Joel Kenyon NA1CS,or SIC Code: 1311 County: Weld Elevation: ZIP Code: Section 02 — Requested Action' (Check applicable request boxes) 4870 80217 Feel Phone Number: 720-929-6-1 35 E-mail Address: j l.kenyon@anadarko.ccm Fax Number: Section 03 — General Information For existing sources. operation began on: / Normal Hours of Source Operation: Well Production Facility Type: Facility 24 hours/day Natural Gas Compressor Station Will this equipment be operated in any NAAQS nonattainment area? ihtt-p:/t; v.cnlorado.20v/cdpheSstare—impl rnent-ation-plans-sins) Section 04 — Regulatory Information is this equipment subject to Regulation 7Section VILE" Is this equipment subject to NSFS 40 CFI( Part 60, subpart KKK? Is this equipment subject to NSPS 40 CFR. Part 60, subpart 0000? is this equipment saject to NESHAP 40 ' FR. Part 61r Subpart Section 05 — Stream Constituents Identify the VOC }TAP weight % content of each applicable stream. 1 I, d Request for NEW permit or newly reported emission source 1 Request MODIFICATION ie existing permit (check each box below that applies') I r Change process or equipment 11 Change permit s- imi_t Change company name Transfer of ownership Other Request to limit Iii$ with a. Federally enforceable lint on FTC APEN Submittal for update only (Please note blank APENs will not be accepted) .\tlrJirtennl Ink). week 52 weeks/year Natural Gas Processing Plant Yes Yes Yes Yes Yes I, we No No No No No section 6 reflects uncontroired emission factor&. Control requested toi reflect 0000a WAR. For new or reconstructed sources, the projected startup date is I Q Other (Describe): .Don't know Don't know Don't know Don't know Don't know Stream VOC Benzene % Toluea %) a Ethy11aenene (wt. %) Xykne iwt.% n EIexane wt, @-0.5 Cas 10 0-0.1 0-0.15 0-01 x.05 9 Heavy Oil (or Heavy Liquid) 100 2 55 0.5 4 Light Oil (or Light Liquid) 100 0-2 0-5.5 0-0.5 0-4 0-9 Water/Oil Submit a representative gas and liquid extended analysis (including BTE. ) to support data aka\ 01 / 2018 Colorado Department of Public Health and Environment Air Pollution Control Division, (APCD') This notices valid for five (5) years. Submit a revised MEN prior to expiration of five-year term, or when a significant change is made (increase production, new equipment, change in fuel_ type. etc). Mail this form along with, a cheek for Sl52.90 to: Colorado Department of :Puhhc Health & Environment APCD-SS-B1 4300 Cherry Creek Drive South Denver, CO 802464530 For guidance on how to complete this APEN form: Air Pollution Control Division: (303)692-3150 Small Business Assistance Program (SBAP): (303) 692-3148 or 1303) 692-3l.?5 APEN toms: imp://w .culorado,aovkdphe/ FNfarzam5 Application status: lit-tp://voivwccoloirado.govicdpheiperimitstatus Cheek box to request copy of draft permit prior to public notice or issuance. FORM 4PCW203 Page 1 of 2 FormAPCD-203 -Fug,tiw 'nmponentLeaksAPEi4-Vey. I 1-13-2 a 14 AIR POLLUTANT EMISSION NOTICE (AflN) & Application for Construction Permit — Fugitive Component Leak Emissions' Permit Number: Emission Source Ate, ID: I I Section 06 — Location Information (Provide Datum and either La /Long or UTM) I 'Inv' Zone (12 or 13) urm Eastiag or Longitude. (meters or degrees) or Method of Collection Location Data (e GM gleEart lix g. map, OPS., 1 ULM Northing Latitude (meters or degrees) Horizontal Datum) (NAD27, 1N 83, WGSS4) W B4 (-10414, it 0.26) 0/GSM (10414, 4D.26) WSS84 (-I04,14. 4028) map Section 07 Leak Detection& Repair D► ) & Control Information Check appropriate boxes to ident ' WAR program conducted at this site: LDAR per NSPS KKK / 0000 IN LiDAR. Per Reg. 7, Section XVI L_F ® Nu WAR program / Other; 0000a WAR wit Q'Iy control e s T1' LDAR per MPS KKK 0000: Monthly monitoring. Control: 88% gas valve, 76% 1t. lig, v&1r e, 68% U. lig. pump Quarterly monitoring. Control: 70% gas valve. 61% 11 lig. valve, 45% It lig. pump Section 08 — Emission Factor Information identify the mission factor used to estimate Emissions under" _S.", along, with the units relating, to the emission factor (e g, lb/hr/component). Table 24* was used to estimate emissionns. -_ Table 24* (<10,0W) ppm) was used to estimate emissions. *Tables 2-4 and 2-8 are found in U.S. EPA's 1995 Protocol for Equipment Leak Enrrdssiciii Estimates Service - Equipment Type Gas Heavy Oil (or Heavv Liquid) Li ht Oil or Li lit Li uid) WateriOil Count' j E.F. L Units Count- E.F. J Units Count` ELF. Units Count EX, Units Connectors 1158D6 4.41 E-4 _ lb Hetcomponent-hr 3.953 1.'65E-5 lb Hck,omponent-he 2,x60 1.65E-2 lb H lrnponeni-641 Flanges 9GB 4.41 Ee4 lb Hetcompunent-hr 385 2.42E-4 lb IHCicarnponeni-hr Open -Ended lines Pump Seals 17 1_13E-3 lb I- HCtcomponent-tlr 1 1 2.87E-2 lb He/corn pOinent-hr Valves 1 ` I , ra� � �^y �, +�'��- lb I��C��trit-�11'r �rU'CJ� +{� 1.85E-5 1 lb FfC•PLOirrip writ -fir , 412 5.51E-3 lb 1-IC/component-hr ��;�� 67 'I .��}�-�. i lb HCt�vinpo��nt-err 9 LASE -S It? I'I�;"�:� ��n�rtt=hr m.65E-2 24 `� I L ►C/ nrnportent-hr 2C.ourtit shall be the actual or estimated. number of components in each type of smite used to gar :ate to `.Actual. Calendar Year Emissions,. below. -T. „ether" equipment type- should be applied. for any equipment type other than connectors, usages, open-ended ;Lines, pumps, or valves. Section 09 — Emissions Tnrentory Information & Emission Control Information • Emission Varier Dec ninrntal e a aEta he Estimated Count Data year far actual calendar year emissions below (e.g. 2007): I Actual ('mini conducted on the. 1bllowingdate: I Emission Factor Actual Calendar Year Emission s4m Requested Permitted EssionS Estimation tliod Method Or Emission Factor Source Pollutant Control Device Description Control Efgeiency Ali Reduction) Primary Secondary Uncontrolled Basis Units [uncontrolled (Tens/Year) Controlled (Tons eair) Uncontrolled (Taus/Year) Controlled (,Tons/ earr) 135 73.2 serta Efts, Sew .5 t n p% i `IY r DAR Y' OC 0.4 02 mac_ S EF L Sac. 5 coartpa, Q'ly LOA N Benzene 0.9 01 St a EFIL tee. 5 Magna cry,' LUArri Toluene — — —. - 0.1 0.1 &EPA, Sit. 5 , ON WAR abylberizene Identify in Section 07 Identify in Section 08 Xylem 0.6 0.6 s cr. a Ems*, See. 5 tiuml1Y, WY II.Dr` I kct. $ rF-.. Sec. 5 torn r . Q;y I DAC,: `1. 1. 0 -Hexane Please use the AiDeD Non -Criteria Reportable Air Pollutant Addendum forma to report pollutants not listed above. ° You may be charged an additional APEN fee if APEN is filled outincorrectly or missing information and requires re -submittal, 4 Annual emission fees will be based on actual emissions reported here. You may request permitted emissions in excess of actual emissions to account for component count and gas composition variability. Section 1[ rp�lic ,fit Ce .cation - I hereby certify that all information contained herein and information submiftcd with Ibis application is complete, true anti correct. dii) 47we Signature of Per 5jegaIry Authorized to Supply Data Date Joel Kenyon Name of Leally Authorized Person (Please print) HSE Representtaive Title FORM APCD-203 Page 2 of 2 1~onnAPCD-X03-FugftivcCorponentLcaksAPEN-Ver.11-13-2014 Boiler AFEN Form APCD-220 Air Pollutant Emission Notice ( rPE ) and Application for Construction Permit Alt sectfons of this APEN and application must be completed for both new and existing facilities, including APEN updates. An application with missing information may be determined incomplete and may be returned or result in longer application processing times. Thu may be charged an adc tion&f APEN fee if the APEN is filled out incorrectly or is missins information and requires re -submittal. This APEN is to be used for boilers, hot oil heaters, process heaters, and similar equipment. If your emission unit does not fall into one of these categories, there may be a more specific APEN for your source (e.g. paint booths, mining operations, engines, etc.). In addition, the General APEN (Form APCD-3OO) is available if the specialty APEN options will not satisfy your reporting, needs. A List of all available APRs' forms canbe found on the Air Pollution Control Division (APCD) website at: www.colorado.gov/cdphefapcd, Do not complete this form for the following source categories: - Heaters or boilers with a design capacity less than or equal to 5 MAABtulhour that are fueled solely by natural gas or Liquid petroleum gas LPG). Heaters or boilers with a design capacity less than or equal to 10 AdlAABtuihour used solely for heating buildings for personal comfort that is fueled solely by natural gas or liquid petroleum gas (LPG). More information can be found in the APEN exempt/permit exempt checklist: htt s: /www.rolerado.gov/ pacific/cdphe/apen-or-air-permit-exemptions, This emission notice is valid for five (5) years. Submission of a revised APEN is required 30 days prior to expiration of the five-year term, or when a reportable change is made (significant emissions increase, increase production,, new equipment, change in fuel type, etc)» See Regulation No. 3, Part A, II.C. for revised APEN requirements., Permit Number: AIRS PD Number: / [Leave blank unless APCD has already assigned a permit /' and MRS ID Section 1 - Administrative Information Company Name': Site Name: Site Location: Kerr McGee Gathering ehn LLC DJ Gas Plant Site Location Section 2, T3N, R66VV, Weld County County: Weld At'lailing Address: PO Box 173779 /Inc aide Zip Code) Denver, CO 80217 E -Mail Address`:joel.kenyon@anadarko.com NAICS or SIC Code: 1321 Permit Contact:. Joel Kenyon Phone Number: 720-929-6135 1Please use the full, legal company name registered with the Colorado Secretary of State. This is the company name that will appear on all documents issued by the APCD. Any changes will require additional paperwork. 2Permits, exemption letters, and any processing invokes will be issued by APCD via e-mail to the address provi ieth Permit. Number:. MRS ID Number: I / [Leave Wank unless APCD has already,assigned a permit # and ARRS ID] Section 2- Requested Action NEW permit OR newly -reported emission source OR MCMFICATI0N to existing permit (check each box below that applies) ■ ■ ■ L Change fuel or equipment ■ Change company name Ui Add point to existing permit Change permit limit 171 Transfer of ownership' I Other (describe below) APEN submittal for update only (Please mote blank APENs will not be accepted) - ADDITIONAL PERMIT ACTIONS Limit Hazardous Air Pollutants (HAPs) with a federally -enforceable limit on Potential To Emit (PTE) APEN submittal for permit exempt/gr'andfathered source Additional Info Et Notes: condensate stabilizer heater For vm-isfer of ownership, a completed Transfer of Ownership Certification Farm (Form APCO- W ) must be submitted. Section 3 - General Boiler Information o General description of equipment and purpose: stabilization Manufacturer ° TB D Model No.: TBD Serial Na.; Company equipment identification No. (optionat); stabilizer heater I For existUri2 sources, operation began on: For new, modified, or reconstructed sources, the projected start-up date is: O 10/1/2018 Check this box if operating hours are 8,760 hours per year; if fewer, fill out the fields below: Normal Hours of Source Operation: hours/day Seasonal use percentage: !secaFeb: 25 Mar -May: 25 Are you reporting multiple identical boilers on this APEN? days/week weeks/year June -dug: 25 Sept -Nov: 25 Yes ; No If yes, please describe how the fuel usage will be measured for each boiler (Le., one meter for all boilers or separate meters for each unit): Form APCD-220 - Boiler ASPEN - Revision 7/2016 2 1 COLOR d DO e)et-IIP�ntRII3 fr.LL!t 1� ;1th�1 of 101'411j Permit Number: AIRS ID Number: f [Leave blank unless APCO has akreudy assigned a permit If and AIRS ID) Section 4 - Stack Information Geographical Coordinates titude/Lorr2Ntude or LITAI) WGS84 (-104.74, 40 26) . Flow Rate Velocity Operator tic{ S(Feet) Ia No. Above Discharge liar Ground Height Level Temp. 4870 Indicate the direction of the stack outlet: tcb&crk: once) ■ Upward (Horizontal .O1 Downward Other (describe): Indicate the stack opening and size: (check one) fil 1 Circular Square/rectangle Interior stack width (inches): Other (describe): Interior stack diameter (inches): Upward with obstructing raincap Interior stack depth (inches) Section 5 - Fuel Consumption Information Design 00M6111hr) Input Rate Requested Annual (Specify Permit Units) Uimit3 Actual Annual (Specify Units) Fuel Use& 6.94 67.6 NiMscf/ ear , From what year is the actual annual fuel use data? Fuel consumption values entered above are for: ®. Each Boiler • All Boilers Indicate the type(s) of fuel used6: Pipeline Natural Gas (assumed fuel heating value of 1,020 51U/SCF) II Field Natural Gas Heating value: BTU/SCF ■ ■ ■ ■ N/A Ultra Law Sulfur Diesel (assumed fuel heating value of 138,000 8 lilgolUon) Propane (assumed fuel heating value of 2,300 BTU/SCF) Coat Heating value: BTU/lb Ash Content: Sulfur Content: Other (describe): Heating value (give units): 'If you are reporting multiple identical boilers on one APEN, be sure to clarify if the values in this section are on an individual bolter basis, or if the values represent total fuel usage for rnultipie boilers.. 5:Requested values will become permit limitations. Requested limit(s) should consider future process growth. 'If fuel heating value is different than the listed assumed value, please provide this infonrnatinn in the "Other" field. Form APCD-220 - Boiler APEN - Revision 7/201.6 3I COLOR ADO n„amttt imblIr 11r4Ath h tinwffla.L+n4Mv Permit Number: AIRS ID 'Number: [Leave blank unless APCD has aLreadv assigned a permit ft and AIRS ICS! Section 6- Criteria Pollutant Emissions Information Attach all emission calculations and emnsinn factor documentation to this APEN form. is any emission control equipment or practice used to reduce emissions? w Yes No 1f yes. Tease describe the control. equipment AND state the overall control efficiency reduction): Pollutant Control Equipment Description Overall VS reduction Control in emissions) Effjcienc ► TSP (PM) PM10 PM 2,5 sox NO low 0x design 60% Co vac Other: From what year is the folloviting reported actual annual emissions data? Use the following tables to report the criteria pollutant emissions from source (Use the data reported in Section 5 to calculate these emissions.) Primary Type (natural Fuel gas, Pollutant Uncontrolled Emission Factor Victual Annual Emissions Requested Emission Annual Limit Permit (s) s (AP Emission Factor Source -42 etc) Mfg. Uncontrolled Controlled Uncontrolled Controlled #2 diesel, etc. (Specify Units) M (Tons/year) itTonsiyear) (Tons/year) (Tons/year) TSP (PM) natural gas P v110 0.44 Ib/hr !2C-%,ofAF42+105-,. 0.3 0.3 PM2,5 044 lb/hr t2rIctironiAP424 iD% annul.+1 a% 0.02 SO 0.03 lb/hr NO, 0,97 lbihr j manuf.+1 0% 2.98 1.34 CO 1.971b/hr manuL.+lO 1.34 voC 0.94 lb/hr manuf,+10% 0.64 Other: 5 Requested values will become permit limitations. Requested liinit(s) should consider future process growth. 1Annual emission fees will be based cm actual controlled emissions reported. if source has not yet started cperatmg, leave blank. Form APCD-220 - Bolter APEN - Revision 7/2016 4 i COLORADO 0 rn!�[cat k kir Kr. tti 5 UMiv[.lifral 1 Permit Number: U AIRS ID Number; [Leave blank unless APCD has already assigned a permit and AIRS Ili] Check this box if the boiler did not combust a secondary fuel during this reporting period and skip to Section 7. If multiple fuels were fire' during this reporting period, complete this secondary fuel emissions table and the tot& criteria emissions table below: Emission Factor Source (AP -42, etc) ,gs Actual Annual Emissions Requested Emission Annual Limits) Permit (#2 Secondary Fuel waste etc Type diesel, . oil, ) Pollutant Uncontrolled (Specify Erni mission Factor Units Uncontrolled Controlled? Uncontrolled Controlled 'T•oirsiy ear) (Tons/year) )(Torsi/year) (Tons/year) TSF (PM) Palo SOK NOx L CO ■ 'MC Other:. If multiple fuels were fired during this reporting period, use the following table to report the TOTAL criteria pollutant emissions from the source. 'Values listed below should be the sum of the reported emissions from the primary and secondary feels' emissions tables in this Section 6: Pollutant Actual Annual Emissions I eqc Errian ested I r r�ul Lirnst(s Permit ncontr' fled Cont_rolledl Un ntr ��rrsly earl [b d �(T onsl ntroll d a �l (Tons"year), TSP (PM) 1 - PM is P 2,5 so 1 H NO OD "0€ Other: Requested values will became permit Limitations. Requested limit(s) should consider future process growth. 'Annual emission fees will be based cn actual controlled emissions reported. if source has not yet started operating, leave blank. Form APCD-220 - Boiler APEN - Revision 1/2016 5 i COLORADO 0;piruuein 4 (IISL5c H1.ikhe IChle■in'nniinI Permit Number:. AIRS ID Number: / / [L ve 030 unless APCD has already assigned a pern it 4 and AIRS ID] Section 7 - Non -Criteria Pollutant Emissions Information Does the emissions source have any uncontrolled actual emissions of non -criteria pollutants (erg. HAP- hazardous air pollutant) equal to or greater than 250 lbs/year? Yes If yes, use the following table to report the non -criteria pollutant (HAP) emissions from source: CAS Nur. b•er Chemical Name OverallEinissin Control Efficiency Uncontrolled (specify Emission Factor units) Source (AP -42, mfg. Factor etc�I, Uncontrolled Actual Emissions (lb y. �r Controlled Actual Emissions' dbs1 ear y ) 'Annual emission fees will be based on actual controlled emissions reported,. If source has not yet started operating,. leave blank. Section 8 o Applicant Certification 'I hereby certify that alt information contained herein and information submitted with this application is complete, true and. correct. V/i 'VI 7 u ,e of Legally Authorized Person (not a vendor or consultant) Date Joel Kenyon Name (please print) I- SE Representative Title Check the appropriate box if you want: Copy of the Preliminary Analysis conducted by the Division _ _ ' Draft permit prior to public notice Draft of the permit prior to issuance (Checking any. of these boxes may result in an inccreased fee and/or processing time) This notice is valid for five (5) years unless a significant change is made, such as an increased production, new equipment, change in fuel type, etc, A revised A.P€N shalt be filed no less than 30 days prior to the expiration date of this APEN form. Send this form along with S152.90 to: Colorado Department of Public Health and Environment Air Pollution Control Division APCD-SS-B I 4300 Cherry Creek Drive South Denver, CO 80246-1530 Telephone: (303) 692-3150 Form APCD-220 _ Boiler APEN _ Revision 7/2016 For more information or assistance call: Small Business Assistance Program (303) 692-3175 or (303) 5-92-3148 Or visit the APCD website at: https://www.colorado.govicdpheiapcd 61 COLORADO 7.,F L IPpmpcarIGIPVS& )ir2dib tnii4rjrtHA Boiler APEN - Form APCD-220 Air Pollutant Emission Notice (APEN) and Application for Construction Permit All sections of this APEN and .application must be completed for both new and existing facilities, including APEN updates. An application with missing information may be determined incomplete and may be returned or result in longer appticationprocessing times.. You may be charged an additional APEN fee if the APEN is Plied out incorrectly or is missing information and requires re-submittaL This APEN is to be used for boilers, hot oil heaters, process heaters, and similar equipment. if your emission unit does not fall into one of these categories, there may be a more specific APEN for your source (e.g. paint booths, mining operations, engines, etc44 Psi addition, the General .APEN (Form AP t1-200) is available if the specialty APEN options wilt not satisfy your reporting needs, A list of all available APEN forms can be found on the Air Pollution Control Division (APCD) website at: www.colarada.govicdpheIapcd. Do riot complete this form far the fo'luwing source categories: Heaters or boilers with a design capacity less than or equal to 5 btu/hour that are fueled solely by natural gas or liquid petroleum gas (LPG). Heaters or boilers with a design capacity less than or equal to 10 M.MStu/hour- used solely for heating buildings for personal comfort that is fueled solely by natural gas or tiquid petroleum gas (LPG). More information can be found in the ADEN exempt/permit exempt checklist: https:/ /ww .colorado..gov/pac fic/c.dphe/open=or-air-permit-exemptions, This emission notice is valid for five (5) years. Submission of a revised APEN is required 30 days prior to expiration of the fire -year term, or when a reportable change is made (significant emissions increase, increase production„ new equipment, change in fuel type, etc). See Regulation No. 3, Part A, I1.E., for revised APEN requirements, Permit Number: 17VVE0398 AIRS 0D Number: 123 /9F2 /001 [Leave blank unless APCD has already assigned a permit # and AIRS ID] Section 1 - Administrative Information Company Name Site Name: Kerr McGee Gathering LLB Latham Gas Plant Site Location - Section 211-3N, R66VV, Weld County Mailing Address: (incise Zip code,) PO Box 173779 Denver, CO 80217 E -Mail Address1: joel.kenyan@anadarkotom Site Location county: Weld NAILS or SIC Code:: 132 PermitContact: Joel Kenyon Phone Number: 720_929_6135 'Please use the full, legat company name registered with the Colorado Secretary of State. This is the company name that will. appear on ail documents issued by the APCD, Any changes will require additional paperwork. 'Permits, exemption tetters„ and any processing invoices will be issued by APCD via e-roaA to the address provided.. Permit Number: 17WE0398 AIRS ID Number! 123 i9F22 /001 [Leave btank unless Apoo has already assigned a permit ff and AIRS ID] Section 2- Requested Action NEW permit OR newly -reported emission source -OR- MODIFICATION to existThg permit (check each box betow that applies) ■ n Change: fuel or equipment Change permit limit ■ El Change company name I{ Add point to existing permit Transfer of ownerships Other (describe below) _OR_ APEN submittal for update only (Please note blank APENs will not be accepted) - ADDITIONAL PERMIT ACTIONS - D Limit Hazardous Air Pollutants (HAPs) with a federally -enforceable limit on Potential To Emit (PTE) APEN submittal for permit exempt/grandfathered source Additional info Et Notes: amine regeneration heater 1 For transfer of owner ships a completed Transfer of Ownership Certification For'rrr (Form APCD-104) must be submitted, Section 3 w General Boiler Information General description of equipment and purpose: amine regeneration Manufacturer, . TB D ModeL No. TB D Company equipment Identification No, (optional): H-80100 For existing sources, operation began on: Serial No, For new, modified, or reconstructed sources? the projected start-up date is: 10/1/2018 Check this box if operating hours are 8576D hours per year; if fewer, fill out the fields below: Normal Hours of Source Operation: hours. /day Seasonal use percentage: Dec. -Feb: Mar -May: Are you reporting multiple identical, boilers on this APEN? Yes days/week weeks/year June -Aug: Sept -Nov: VI It yes, please describe how the fuel usage will he measured for each boiler (Le., one meter for Ml bDAlers or separate meters for each unit): Form APCD-22O - Boiler APEN - Revision 7/zOrl o 2 1 COLORADO bcp:u-acr{d Put lit Ilada TAW.dniuneuF Permit (Number: IIWEOZ' S AIRS ID Number: 123 119F22/ 001 [Leave blank unless A.PCD has already assigned a permit At and AIRS ia) Section 4 - Stack Information Geographical Coordinates (Latitude/Longitude or UTM) WG-S84 (-104.74, 4026) Operator Stack ID No.. Above Discharge Ground (Feet) Height Level�' Tee i' r) Velocity at/sec) 'Flow 1cr Rate ) amine regen 1 4870 Indicate the direction of the stack Duvet: (check one) ■ Upward Horizontal Downward ether (describe): Indicate the stack opening and size: (check one) Circular Interior stack diameter (inches): Upward with obstructing raincap �] Square/rectangle Interior stack width (inches): Interior stack depth (inches): In other (describe) Section a - Fuel Consumption information Design (M► IBTU1hr) Input Rate ! Actual Annual (Specify Fuel Units) Use 4 Requested (Specify Annual Permit Units) Limits 55 535.3 i Mscf/year From what year is the actual annual fuel use data? Fuel consumption values entered above are for: Indicate the type(s) of fuel used6: Each Boiler 1' AU Boilers fl N/A Pipeline Natural Gas (assumed fuel heating value of 1,620 BTU/SCFJ Fietd Natural Gas Heating values BTU/SCF Ultra Low Sulfur Diesel(assumed fuel heating value of 138,QQO 8T igaUon) Propane (assumed fuel heotinq value of 2,300 BT SCF) Co& Heating value: STU/Ib Ash Conteric Other (describe): pipeline gas Sulfur Content: Heating value i(give units): 900 BTU/scf 4If you are reporting multiple identical boilers on one APEN, be sure to clarify if the values in this section are on an individual. bolter basis, or if the values represent total fuel usage for multiple boilers, 5Requested values willbecome permit h itati©ns_ Requested lirrmit(s) should consider future process growth. 6If fuel heating value is different than the listed assumed value, please provide this information in the "Other" ifield. Form AP'CD-.22O F Boiler APEN _ Revision 7/2016 31 COLOIRACC' L=wdinrr I1.. �'I5!YI z r,W'f tri n..f;11 Permit Number: I7 7WE0398 AIRS ID Number: 123 /9F22 / 001 [Leave blank unless APCDt has already assigned a permit It and AIRS ID] Section 6- Criteria Pollutant Emissions Information Attach all emission calculations and emission factor documentation to this APEN form. Is any emission control equipment or practice used to reduce emissions? Yes j No If yes, please describe the control equipment AND state the overall control efficiency reduction): Pollutant Control Equipment Description Overall Control reduction Efficiency in emissions) TSB (PM) P 10 Px, SO, Nag Co vat Other: From what year is the following reported actual annual emissions data? Use the following tables to report the criteria pollutant emissions from source: (Use the data reported in Section 5 to calculate these emissions,) Primary (natural #2 Type diesel, etc. Fuel gas, Pollutantt Uncontrolled Eys��o►n Factor Units) Emission Factor Source etc, Actual Annual EmissionsgErnissi Re► uested Annual n Permit Limit(s)5 Uncontrolled (Tons. /year) Controlled(Specify (Tons/year) Uncontrolled (tons/year) Controlled' (Tons/year) natural gas TSPP - __. PM1,0 0.0075 blviMbtu AP -42 - 2 129 1.79 P 2.5 0.0075 Ibitv1Mbtur AP -42 1.79 1.79 5C 0.0006 IbIM 1btu AP -42 de rain li de min NOx 0.098 lb/N/1141)th , AP42 9,64 9.64 CO0,04 lb/MMbtu manuf. 9664 9$4 VOC 0.019 tb/IMIVlbtu manuf. Other; • 5 Requested values wilt become permit limitations. Requested limit(s) should consider future process growth. 'Annual emission fees will be based on actual controlled emissions, reported. If source has not yet started operating, leave blank. Form APCD-220 - Boiler APEN - Revision 7/2016 COLORADO Elgin:17=mA Put Walk) 6 tat o min rri l Permit Number: 17E08 AIRS ID Number: 123 19F22 / 001 [Leave blank unless APCD has already assigned a permit # and AIRS ID] Check this box if the boiler did not combust a secondary fuel during this reporting period and skip to Section 7, If multiple fuels were fired during this reporting period, comptete this secondary fuel emissions table and the total criteria emissions table beiow: Secondary Fuel (#2 waste etc.) Type diesel, oil, Emission (AP Factor 42, Mfg. etc) f Fin Actual 1� Annual /y Emilssions Requested Emission Annual . . l_��t Permit 11 Pollutant Uncontrolled . Emission Fact�artrr+e 5, �a �' r��r � Uncontrolled (Tans/year) Controlled (Tons/year) Uncontrolled (Tons/year) Controlled (Tons/year) lle d TSP (P.M.) PM la PM2,5 sax Mix Co k voc Other: - ----� - if multiple fuels were fired during this reporting period, use the following, table to report the TOTAL criteria pollutant erudssion.s from the source. Values listed below should be the sum of the reported emissions from the primary and secondary filets' emissions tables in this Section 6: Pollutant Actual Annual Emissions RequestedAnnualPermit Emission Limit(5)5 5 Uncontrolled (Tons/year), Controlted7 (Tons/yearr) Uncontrolled from/year) Controlled (Tons/year) TSP (PM) PMio PMLS sox NO. Co VOL Other: 5 Requested values will become permit limitations. Requested Limit (s) should consider future process growth. 7Annual emission fees will be based on actual controlled emissions reported. If source has notyet started operating, Leave blank, Form APCD-22O 4 Boiler APEN - Revision 7/2016 5 Dap trunrsgt-cf Public PL1RADO @6e. a] 1e Fr'P.rainr-ir lig Permit Number-, 7VVED398 AIRS ID Number: 123 /9F22/ 001 [Leave blank unless. APCD has already assigned a permit IV and AIRS IDJ Section Non -Criteria Pollutant Emissions Information Does the emissions source have any uncontrolled actual ermissions of nor -criteria. pollutants (e. g. HAP- hazardous air pollutant) equal to or greater than 250 lbs/y'ear? Yes if yes„ use the following table to report the non -criteria pollutant (HAP) emissions from source: CAS Number Chemical Name Overall Control Efficiency Uncontrolled d (specify E Emission i Factor units) Emission Source (4P 42 I It Factor , etc Uncontrolled Actual Emissions ribs/year) Controlled Ennissions7 (lbs/year.) Actual ri-:hexane 0.0018 Ibirtin lbtU AP -42 - - 7 7Annual emission fees will be based an actual, controlled emissions reported. I f source has not yet started operating, leave blank.. Section 8 - Applicant Certification I hereby certify that all information contained herein and information submitted with this application is complete, true and correct. Joel Kenyon to i n tu' -e of Legally Authorized Person (not a vendor or consultant) Date HSE Representative Name (please print) Title Check the appropriate box if you want: Copy of the Preliminary Analysis conducted by the Division Draft permit prior to public notice Draft of the permit prior to issuance 1' (Checking any of these boxes may result in an increased fee and/or processing time) This notice is valid for five (5) years unless a significant change is made, such as an increased production, new equipment., change in fuet type, etc. A revised APEN shall be filed no Less than 30 days prior to the expiration date of this APEN form. Send this form along with 5152.9 to; Colorado Department of Public Health and Env' ro nimerit Air Pollution Control Division PCD-SS-B1 4300 Cherry Creek Drive South Denver, CO 8024 6-15 30 Telephone: (303) 692-31.50 Form APCD-220 - Boiler APEN - Revision 7/2016 For more information or assistance call: Small Business Assistance Program (3O3) 692-3175 or (303) 692-3148 Or visit the APCD website at: https: //www.colcrado.gov/cdphe/apcd 6I. COLORADO Lvistruerxl d EttIM !!r�IUi!1 Ln'.r..40 Rp 1:LI Boiler APE - Form APCD-220 Air Pollutant Emission Notice (APEN) and Application for Construction Permit All sections of this APEN and application must be completed, for both new and existing facilities, including APEN updates. An application with missing information may be determined incomplete and may be returned or result in longer application processing times. You may be charged an additional APEN fee if the APEN is fitted out incorrectly or is missing information and requires re -submit -tat, This APEN is to be used for boilers, hot oi.lheaters, process heaters, and similar equipment. If your emission unit does not fall into one of these categories, there may be a more specific APEN for your source (e.g. paint booths, mining operations, engines, etc.). In addition, the General APEN (Form APCD-200) is available if the specialty :PEN options will not satisfy your reporting needs. A listof all available APEN forms can be found on the Air Pollution Control Division (APCD) website at: w ,colorado.gov/cdpheia Decd. Do not complete this, form fur the following source categories:, Heaters or boilers with a design capacity less than or equal to 5 Watufhour that are fueled solely by natural gas or liquid petroleum gas (LPG). Heaters or boilers with a design capacity less than or equal to 10 MMBtuihour used solely for heating buildings for personal comfort that is fueled solely by natural gas or liquid petroleum gas (PG), More information can be found in the APEN exetroptiperrnit exempt checklist: https: ivow►w .colorado.gov/padif'ic cdphei'apen"or-air-permit-exemptions. This emission notice is valid for five (5) years. Submission of a revised APENI is required 30 days prior to expiration, of the five-year term, or when a reportable change is made (significant emissions increase, increase production, new equipment, change in fuel type, etc), See Regulation Na. 3, Part A, ILL for revised APEN requirements, Permit Number: I17WE0398 AIR ICS Number: 123 /9F22 /002 [Leave blank unless APCD has already assigned a permit it and AIRS IN Section 1 - Administrative Information Company Name' Site Name: Site Eocat io n : Kerr McGee Gathering LLC Latham Gas Plant Section 2, T3N, RG?WA Weld County Mailing Address; (include Zip Cede) PO Box 17 779 Denver, CO 80217 E -Mail Address2: joeLkenyonanadarkacorn Site Location County; Weld HAILS or SIIC Code: 1321 Permit Contact: Joel Kenyon Phone Number: 720-929-6135 'Please use the i"utl, legal company name registered vwath the Colorado Secretary of State. This is the company name that will appear on all documents issued by the ,PCD. Any changes will require additional paperwork, 1Perr its, exemption letters, and any processing invokes will be issued by APCD via e•rnait to the address provided. Permit Number: 17VVE0398 AIRS ID Number: 123 /9F22 /002 [Leave bland. unless APCD has already assigned a permit If and AIRS MI Section 2- Requested Action III NEW permit OR newly -reported emission source MODIFICATION to existing permit (check each box below that applies) Change fuel or equipment Change permit limit ■ ■ Change company name Transfer of ownership' r Add point to existing permit Other (describe below) APEN submittal for update only (Please note blank APENs will not be accepted) ADDITIONAL PERMIT AcirroNs Limit Hazardous Air Pollutants (HA!Ps) with a federally -enforceable limit on Potential To Emit (ATE) APEN submittal for permit exemptigrandfathered source Additional Info ,Et Notes: train 1 molecular sieve regeneration heater For transfer of ownership, a completed Transfer of Ownership Certification Form (Form APCD-1041 must be submitted. Section 3 - General Boiler Information General description of equipment and purpose: molecular sieve regeneration Manufacturer: TBD Model No.: TBD Serial No.: Company equipment identification No. (optional): Ti mole sieve heater 0-1-31711) For existing sources, operation began on: For new, modified, or reconstructed sources, the projected start-up date is: Check this box if operating hours are 8,760 hours per year; if fewer,, fill out the fields below, Normal Hours of Source Operation: Seasonal use percentage: Dec -Feb: hours/clay days/week weeks /year Mar -May: June -Aug: Are you reporting multiple identical boilers on this #PEN? Yes s V No Sept --Nay If yes, please describe how the fuel usage wilt be measured for each boiler (i.e., one meter for alt boilers or separate meters for each unit): Form APCD-220 - Baiter APEN - Revision 7/2016 2 I COLORADO Cm? arrincn. d R AA: P5 ,:1ai El trttil in min C1 � Permit Number: 17 E0398 AIRS ID Number: 123 /9F22 1002 [Leave blank unless APCD has already assigned a permit 11 and AIRS ID] Section 4 - Stack Information Geographical ical Coordinates (Lvtitvdert.vrig tulle UTM) WGS84 (-104741 40,26) Operator Stack a ID No. Above Discharge Ground (Feet) Height Level Flow MCFFM) Rate i Veiocity f jusec} Temp. (F) Ti mole sieve heater 4870 Indicate the direction of the stack outlet: (chez* one) Upward Horizontal • ■ Downward Other- (describe): Indicate the stack opening and size; (check one) a 1 Circular Interior stack diameter (inches): Square/rectangte Interior stack width (inches): fl Other (describe): Upward with obstructing r&ncap Interior stack depth (inches): Section 5 a Fuel Consumption Information Actual Annual (Specify y Fuel tinit5) Use4 Requested ('Specify Annual Units) Permit Limits Design (A4M Input DTU/hr) Rate 18.36 178.7 IV1rViscliyear From what year is the actual annual fuel use data? Fuel consumption values entered above are for: ® Each Boiler _ All Boilers II N/A Indicate the type(s) of fuel used: Pipeline Natural. Gas (assumed fuel heating value of 1.020 BTU/SCF Ftelld Natural Gas Heating value: BTU SCF U 0 Ultra Low Sulfur Diesel (assumed fuel heatin3 value of 138400 BTU/ gallon) Propane (assumed fuel heating value of 2)00 BTU/S Coal Heating value: BTtl / l b Ash Content: Sutton Content: Other (describe): pipeline gas Heating value (give units): 900 4WWf you are reporting mnultipl.e identical boilers on one APEN, be sure to clarify if the values in this section are on an individual. boiler basis, or if the values represent total fuel usage for multiple boilers. sl eguested values will become permit 'Limitations. Requested ['mitts) shouLd consider future process growth. Elf fuel heating value is different than the listed assumed value, please provide this information in the "Other" field. Form APCD-22O - Boiler APEN - Revision 7/2016 31 'GOto R ADO Iltpattmcril S Putu: tip-ecthUIPe tGrin•i,�! Permit Number: 17WE0398 AIRS le Number: 123 /9F2 /002 [Leave blank unless APCD has already assigned a permit # and AIRS ID] Section 6- Criteria pollutant Emissions Information Attach all emission caLculatiohs and emission factor documentation to this APEN form. Is any emission control equipment or practice used to reduce erns ssions? Yes / No It yes, please describe the control equipment AND state the overall control efficiency. (% reduction): Pollutant Control Equipment Description Overall ( reduction Control in Efficiency emissions) TSP (PM) PM 1 0 PM 2,5 sox to x OO 7 o lu. Other: From what year is the following reported actual annual emissions data? Use the following tables- to report the criteria pollutant emissions from source: (Use the data reported in Section 5 to calculate these emissions.) Primary (natural #2. Typo diesel, etc.) Fuel gas,. I Emission (AP Factor Source -42, Mfg. Requested Annual Emission Limits) Permit Annual Erinissons Pollutant UncontrolledActuat Emission Specify Factor Units)etc) Uncontrolled (r ra ®r Controlled (Tons/ ear) Uncontrolled Tnsl r) Controlled? (Tons/year) natural gas TSP' (PM) IlL Pitt° 0.0075 lb/Mi' btu AP -42 de rain de min PM2,5 0.0075lbll IMbtu AP -42 _ de mini de min de min de r min sox 0.0006 ffi NTIMbtu I AP -42 NOx 0.098Ib,/M Mbtu AP -42 3.22 3.22 CO 0.O4 IWM Motu manut 3.22 3.22 1.53 1.53 Vac jGkU19b/MMttU r arid, Other: l 5 Requested values Will become permit limitations. Requested Limit(s) should consider future process growth. 'Annual emission fees Will be based on actual controlled emissions reported. If source has not yet started operating, leave .blank, Form APCD 222 - Boiler APEN - Revision 712O16 4 I COLORADO ECp nrzdr�id rutUa tis.) SBSIiiV4Li:, I Permit Number: I7 ''E0398 O AIRS ID Number: 123 /9 / 002 [Leave blank unless APCD has already assigned a permit /t and AIRS ID] Check this box if the boiler did not combust a secondary fuel during this reporting period and skip to Section 7% if multiple fuels were fired during this reporting period, complete this secondary fuel erma5sIo Js table and the total criteria emissions table below: (#2 Secondary Fuel waste etc.) Type diesel, oil, Pollutant Uncontrolled (Specify Emission FactorUnits U �' Emission (AP-42, Factor Source Mfg. etc) Requested Annual Emission Limit�(s) Permit , Actual Annual i Emissions - Uncontrolled (Tons/year) Controlled' (Tons/.year)(Tons/year) - Uncontrolled Controlled ('Tonslyear) TSP (PM) PisAio P2.5 Sox Co voc Other: If multiple fuels were fired during this reporting period,use the following table to report the TOTAL criteria pollutant emissions from the source. Vales listed below should be the sum of the reported emissions from the primary and secondary fuels' emissions tables in this Section 6: Actual Annual Emissions �e�uested Emission Annual Limit(s)5 Permit Pollutant Uncontrolled (Tons/year) Controlled (Tors/year) Uncontrolled ('Tons/y'eal Controlled (Tons/,tear-.) TSP (PM) I ' PM1,o, P1.5 50 NO Co Other: a 3Requested values will become permit limitations. Requested tinit(s) should consider future process growth. 'Annual emission fees will be based on actual controtted emissions reported. If source has not yet started operating, leave blank. Form APCD-22O - Boller APED Revision 77206 5 1 COLORADO Cyprus= a -I Fu�i,1a ' Wa. 1i3t8 {FJi.'yii.Hsn!OI Permit Number: I WE0'398 AIRS ID Number; 123 /9F22 22 / 002 (Leave blank unless APCD has already assigned a permit ,U and AIRS ID] Section 7 Non -Criteria Pollutant Emissions Information Does the emissions source have anyuncontrolled actual emissions of non -criteria pollutants (erg. HAP= hazardous air pollutant) equal to or greater than 250 lk s/year? N Yes If Axes., use the follo5n.fing table lo report the non -criteria pollutant (HAP) emissions from source: Chemical Name Overall Control Efficiency Uncontrolled (specify Factor r treats) Uncontrolled Actual Emissions (lbs/yrear) ns . Emission Emission Source 4P-42, /4g. Factor etc) ! Controlled ActualNumber Emissions?' (tbsiy+earn n -hexane 0_[016Ib/MMbiu AP -42 'Annual emission fees be based on actual controlled emissions reported. I r source has not yet started operating, leave blank, Section 8 - Applicant Certification I hereby certify that all information contained herein and information submitted With this application is complete, true and correct. 4, fr//f nature of Legally Authorized Person (not a vendor or consultant) Joel Kenyon Date HSE Representative Name (please print) Title Check the appropriate box if you want: I _ Copy of the Preliminary Analysis conducted by the Division Draft permit prior to public notice Draft of the permit prior to issuance (Checking any of these boxes may result firs an increased fee acid/or processing time) This notice is valid for five (5) years unless a significant change as made, such as an increased production, new equipment, change in fuel type{ etc. A revised APEN shall be filed no less than 30 days prior to the expiration date of this APEN form. Send this form along with $152590 to.. Colorado Department of Public Health and Environment Air Pollution Control Division APCD-SS-B1 4300 Cherry Creek Drive South Denver, Co 80246-1530 Telephone: (303) 692-3150 Form APCD-22@ - Boter .PEN - Revision 7/2016 For more information car assistance call:. Small Business Assistance Program (303) 692.3175 or (303) 692-3148 Or visit the APCD website at: https: //ww .colarado.Rov/cdpheiapcd COLORADO tor s. etr,tti'*IA Uc kraal '8:fiM9(aumiP0I Boiler APED - Form APOD- 2Z f] Air Pollutant Emission Notice (MEN) and Application for Construction Permit All sections of this APEN and a,ppl cati n must be completed for both new and existing facilities, including APEN updates. An application with missing information may be determined incomplete and may be returned or result in longer application processing times.. You ,may be chorged an acidItional OPEN fee if the APEN is fitted out incorrectly or is missing information and requires re -submittal. This APEN is to be used for boilers, hot cit heaters, process heaters, and similar equipment. If your emission unit does not fall into one of these categories, there may be a more specific APEN for your source (e,g. paint booths,. mining operations, engines, etc,). In addition, the General APEN (Form APCD-200) i.s available if the specialty APEN options will not satisfy your reporting needs., A list of all available APEN forms can be found on the Air Pollution Control Division (APCD) website at: www.cotora,do1gov/c,dphe/apcci. Do not complete this form for the following source categories: Heaters or boilers With a design capacity Tess than or equal to 5 Wis4Btuihour that are fueled solely by natural gas or liquid petroleum gas 094 Heaters or boilers with a design capacity less than or equal to 10 ►! 'Btu/hour used solely for heating. bui[dings for personal comfort that is fueled solely by natural gas or liquid petroleum gas (LPG). More information can be found in the APEN exempt,/ permit exempt checklist: Inttps://wv w.colorado,gov/pacific/cdpheia)en-ni-air-Jeri-nits-exemptions. This emission notice is valid for five l5l years. Submission of a revised APEN is required 30 days prior to expiration of the five-year term, or when a reportable change is made (significant emissions increase, increase production, new equipment, change in fuel. type{ etc). See Regulation No. 3, Part A, iLC. for revised APEN requirements. Permit Number: 17' E0398 AIRS ID Number: 123 /9F22 /003 [Leave blank. unless APCD has already asst Tied a permit # and AIRS ID] Section I - Administrative Information Company Name': Site Name:. Kerr McGee Gathering LLC Latham Gas Plant Site Location: Section 2, T3N, , . . Weld County Mailing Address: (Include Zip Code) PO Box 173779 Denver, CO 80217 - ail Addres&2 joel.kenyon@anadarkocom Site Location County: Weld NAICS or SIC Code: 1321 Permit Contact: Joei Kenyon Phone Number: 720-929-6135 'Please use the full, legal company name registered with the Coto;rade Secretary of State, This is the company name that will appear on alt documents issued by the APCD. Any changes wilt require additional paperwork. !Permits, exemption letters, and any .processing invoices will be issuedby APCD via e-mail to the address provided. Permit Number: 17WE0398 AIRS iD Number: 123 /9F22 /003 a _ [Leave bank unless APCD has &&ready. assigned 4 penr;Ft it and AIRS1101 Section 2- Requested Action NEW permit OR newly-reL)orted emission source -OR (� MODIFICATION to existing permit (check each box ibe(ow that cpp 1es) r ■ Change fuel or equipment Change permit limit I Change company name Transfer of ownership' - OR - ■ Add point to existing permit Other (describe bellow) APEN submittal for update only (Please note blank APENs will not he accepted) ADDITIONAL PERMIT ACTIION.S Limit Hazardous Air Pollutants MOO with a federally -enforceable limit on Potential To Emit (PTE) U APENsubmtttal for permit exempt/gra�ndfathered source Additional Info a Notes: train 2 molecular sieve regeneration heater For transfer of ownership, a completed Transfer of Ownership Certification Form (Form .APCD-i ) must be SU mitt.edr Section 3 - General Boiler information General description of equipment and purpose: molecular sieve regeneration Manufacturer: TBD tiikocier, Hoe: TBD Serial No.: Company equipment Identification No. (optional): T2 mole sieve heater (H3271 32.711) For existing sources, operation began on: For new, modified, or reconstructed sources, the projected start-up date is: a Check this box if operating hours are 8,760 hours per year; if fewer, fill out the fields below: Normal Hours of Source Operation: hours/day Seasonal use percentage: Dec -Feb: Mar -May: days/week June -Aug: Are you reporting multiple identical boilers on this APEN? Dyes. [/1 No Form A Sept -Nov: weeks/year If yes, please describe how the fuel usage will be measured for each boiler (Le.. one meter for all boilers or separate meters for each unit): PCD-22O - Boiler APEN - Revision 7/2016 21 COLORADO treptruntrtaiPutLA Hier in,m fJtr4a'ithmeVsV Permit Number: 17WE0►398 AIRS iD Number: 123 /9F22 /003 [Leave blank unless APCD has already assigned a permit U and AIRS ID] Section 4 - Stack Information Geographical Coordinates (Latitude/Longitude or UTM) GB4 (-104.74, 40,26) Discharge Height Flow (MCFM) Rate Velocity (ft/sec) Stack Operator ID iNo� Above Ground (Feet) LeveK Temp. (• F) Indicate the direction of the stack outlet: (check one) V Upward II Horizontal ■ Downward Li Other (describe): indicate the stack opening and size: (check one) Circular Interior- stack diameter (inches): Square/rectangle interior- slack width (inches): Other (describe): ■ ■ Upward with obstructing raincap Interior- stark depth (inches): Section 5 - Fuel Consumption Information Actual Annual (Specify Fuel Units) Use4 Design (MM8T"U/hr, Input Rate Requested Annual (Specify Permit 'nits) Limits 18.36 178.7 MMscfiyear From what year is the actual annual fuel usedata? Fuel consumption values entered above are for: / Each Boiler _ Indicate the type(s) of fuel used: ■ Alt Boilers ■ N I A Pipeline Natural Gas (assumed fuel heating value of I. ?U'2O BTU/.SCF) Pied Natural Gas Heating value: BTTU/SCiF Ultra Low Sulfur Diesel (assumed fuel heating value of 138,000 BT P/ alion) Propane (assumed fuel heating value of 20300 BTU/SCF) O Coat Heating value: BTU 'lb Ash Content: Sulfur Content: Other (describe): pipeline gas Heating value (give units): 900 all you are reporting multiple identical boilers on one APEik4 a be sure to clarify if the values in this section are on an individual boiler basis, or if the values represent total, fuel usage tor multiple boilers. Requested values will become permit limitations, Requested limit(s) should consider future process growth. $If fuel heating value is different than the 'listed assumed value, please pro4de this information in the "Other" field. Form APC®-x.20 - Bailer APEN - Revision 7/2016 31 COLORADO 0:;i:tmrrtrrI—t ag Ir_5r' 7r ari n r:t,*, X11 Permit Number: 17 E0398 AIRS ID Number: 123 19F22 19F22/003 [Leave blank unless APCD has already assigned a permit ft and AIRS Id] Section 6- Criteria Pollutant Emissions Information Attach all emission calculations and emission factor documentation to this APEN form. k any emission control equipmentor practice used to reduce emissions? Dyes L' No f fires pl a describe rthe control equipment AND state the nverall rantrnl eff cie�r c ' (% reduction Pollutant Cii reduction Control in Efficiency emissions) Control EquipmentDescriptionOverall TSP (PM) r P P 2.5 sox NO Co VOC Other: From what year is the following reported actual annual emissions data? Use the foltowing tables to report the crrterr a pollutant emissions from source: Use the data r -e, orted in Section 5 to calculate these emissions.) Primary (natural #2 Type diesel, �. Fuel gas, Pollutant Emission (AP Source -42 etc) mfg. Actual Annual Emissions Requested Annual Limit(s)5 Permit Uncontrolled EmissionFactorEmission (Specify Factor Units)y f Uncontrolled ��J?5r�r' , Controlled?' ontrolled ( �Ofi'51� eat) Uncontrolled �ny ��) ! Controlled ( J��.11i3l� ]� gar natural gas TS? (PM) -• P 1Q 0.007 J b/M lbtu AP -42 de min de min Pd 2.s 0 0075 Ib/MMbtu AP -42 de mm de min de mire de min SOx 0,0006 IbliVIIVIbtut AFB -.42 322 3.22 NO 10.098 lb/MIVibtu 1 AP -42 CO 0.04Ib/MMbtus manut , 1 322 3.22 VOC 0.019 Ibitv1Mbtu man Lrf_ 1.53 1.53 ether; 5 Requested values will become permit limitations. Requested liniiti.$) should consider future process growth. 7Arnnual emission NNes will be based on actual controlled emissions reported. if source has not yet started operating, leave blank. Form. APCD-220 - Boiler APEN - Revision 7/2016 4 I COLORADO attintdP MEd`s'+ d yMA4etin Permit Number: 17WEa 398 wit AIRS ID Number: 123 /9F22 / 003 [Leave blank unless APO has already assigned a permit ft and AIRS [D] Check this box if the boiler did not combust a secondary Net during this reporting period and skip to Section 7. if multiple fuels were fined during this reporting? period, complete this secondary fuel emissions table and the total criteria emissions table below (#2 Secondary Fuel waste etc.) Tape diesel, oil, Pollutant Uncontrolled Emission Factor (Specify Units) .t ,� (AP Emission Factor Source -42, mfg. eta) Actual Annual Emissions Requested Emission Annual Limits 1� Permit Uncontrolled (TorrsIye'ar) Controlled1 (pans/year,) Uncontrolled Controlled ( ns/year) - (Tanstyeor) TSP (PM) PM HD sax NO, CO voc Other: If multiple fuels were fired during this reportingperiod, use the following table to report the TOTAL criteria pollutant emissions from the source. Values listed below should be the sum of the reported emissions from the primary and secondary fuels. emissions tables in this Section 6: Pollutant Actual ► nnual Emissions Requested ► nnual Emission Limit(s)5 Permit Uncontrolled i Tons/year) Controlled/ (Tons/year) Uncontrolled (Tons/year) Controlled (Tons/year) T AP (PM) sox C Other: Requested values will become permit limitations. Requested limit(s) should consider future process growth, 7Annual emission fees will be based on actual controlled emissions reported. If source has not yet started operating, leave blank. Form APCD-22O - Boiler APEN - Revision 7/2016 5 1 CCU. °RADIO file p erotism est Ail la t ki*a .11 FJ 4AYil°Vans ;'1 Permit Number: 1 WE0398 AIRS ID Number: 123 l'9F22/ 003 [Leave hllan'k unless APCD has already assigned a permit # and AIRS ID) Section 7 - Non -Criteria Pollutant Emissions Information Does the emissions source have any uncontrolled actual emissions of nor -criteria pollutants (e.g. HAP- hazardous air pollutant) equal to or greater than 250 tbs/year? I Yes No f ves use the Nth: -in , table to report the non -criteria potlutant (HAP) emissions from source: CAS Number Chemical Name Overall Control Efficiency Unncontrolled (specify Emission (Factor s ��t tinit- s. Emission Factor Source (AP -42 Mfg. etc) Uncontrolled Emissions Actual f� y- crr ) Controlled Actual Emissions1 �� +� ear j' 0.0018 Ib/MMbro AP -42 n -hexane 'Annual, emission fees will be based on actual controlled emissions reported, If source has not yet started operating! leave blank.. Section 8 - ► pplicant Certification I hereby certify that ,all information contained herein and information submitted with thisapplication is complete., true and correct. ienature of Legally Authorized Person (not a vendor or consultant) Joel Kenyon /691 Date HSE Representative Name (please print) Title Check the appropriate box if you want; Copy of the Preliminary Analysis conducted by the Division DEL Draft permit prior to public notice Fri Draft of the permit prior to issuance Y (Checking any of these boxes may result in an increased fee and/or processing time) This notice is valid for five (5) years unless a significant change is made, such as an increased production, new equipment, change in fuel type, etc. A revised APEN shall be filed no less than 30 days prior to the expiration date of this APEN form, Send this form along with $152.90 to: For more information or assistance call: Colorado Department of Public Health and Environment Small Business Assistance Program Air Pollution Control Division (303) 692-3175 or (303) 692-3148 APCD-SS-B1 4300 Cherry Creek Drive South Or visit the APCD website at: Denver, CO 80246-1530 https: / / W A : a ilorado.gov/cdrihe aped Telephone: (303) 692-3150 rorrn APCD-22O - Boiler- APEN Revision 7/2016 6 1 COLORADO Mill r, P1 Reciprocating Internal Combustion Engine ADEN - Form APCD-201 Air Pollutant Emission Notice (APEN) and Application for Construction Permit All sections of this APEN and application must be completed for both new and existing facil ties, including APEN updates. An application with missing information may be determined incomplete and may be returned or result in longer application processing times. You may be chorged on additional APEN fee if the APEN as finned out incorrectly or is missing information and requires re -submittal. This APEN is to be used for reciprocating internal combustion engines (RICE). If your engine is a diesel compression ignition engine or your emission Unit does not fan into the RICE category, there may be a more specific APEN for your source (e.q. diesel compression ignition engine, mining operations, asphalt plant, crusher, screen, etc.). In addition, the General: APEN (Form APCD-2,00) is available fthe specialty APEN options will not satisfy your reporting needs. A list of all available APEN forms can be found on the Air Pollution Control Division (APCD) we at: www.colorada,gov/cdphe/apcd. This emission notice is Valid for five (5) years. Submission of a revised APEN is required 30 days prior to expiration of the five-year term, or when a reportable change is made (significant emissions increase, increase production) new equipment., change in fuel type, etc). See Regulation No. 3, Part A, i'I.C for revised APEN requirements, Permit Number: AIRS ID Number: 123 /9F2 / (Leave blank unless APCD has alreaciy assigned a permit ' and AIRS ID) ect on (' a Administrative (n!' cr not n Company Nanne1: Kerr McGee Gathering LLC Site Name: Latham Gas Plant Site Location: Section 2, 13N1 R66 V, Weld County Mailing Address: ��' (include Zip Code)PO Box '� 7 9 Portable Source Home Base: Denver, CO 80217 Site Location County: Weld NAILS or SIC Code: 1321 Permit Contact: Joel Kenyon Phone Number: 720-929-6135 L -Mail Address' joetkenyon@anadarkc.com I Use the felt, legal company name registered with the Colorado Secretary of State.. This is the company name that will appear on all documents issued by the APCD Any changes will require additional paperwork; • Permits, exemption -letters, and any processing invoices will be issued by APCD via a -mail to the address :prov^ide& Form APCUa201 Reciprocating Internal Combustion Engine APEI4 - Revision 1 /2017 cotOilADO triadic -mitt t t Pvy {.I4 ROLEIli it tnu�rr�� in,pnt Permit Number: AIRS ID Number: 123 i9F22 [Leave blank unless APCD has already assigned a permit # and AIRS ID) Section 2 - Requested Action ■ • Fl NEW permit OR newly -reported emission. source (check .onebelowej U STATIONARY source PORTABLE source Request coverage under a Construction Permit Request. coverage under General Permit GPC23 (Natural Gas an/y) It General Permit coverage is requested, the Gen ersal. Permit registration fee of $1,500.00 roost be submitted along with the APEN Filing fee, - OR MODIFICATION to existing perrnit (check each box below that apprres't ■ Change fuel or equipment El Change company name Change permit Um t ■ Transfer of owner-ship4, APEN submittal fur update only (Blank APEt4s will not be accepted) - ADDITIONAL PERMIT ACTIONS - APEN submittal for permitrexernpt/g.r-andiathered 'source Notification of Alternate Operating, Scenario (AUS) permanent replacements Additional info Et Notes: Add point to existing permit Other (describe below) Only one engine may be reported per APEN for GPO" coverage. Coverage under GPOZ. is voluntary, For transfer of ownership„ a comp'lete'd Transfer of Ownership Certification Form (Form APCD-104) must be subm>tted 5 This does not apply to General Permit GPO2, as it does not contain a provision for ACS permanent replacements,. Section 3 - General information Does this engine have a Company Equipment. Identification No. (e.,2, EPG-1, Engine 3, etc)? If yes, provide the Company Equipment Identification No. General description of equipment and purpose: emergency electricity generation GEN 1 Yes natural gas fired generator engine for backup For existing sources, operation began on: For new or reconstructed sources, the projected start-up date is: Willi this equipment be operated in any NAAQS norattainment area? (http: //www.colarad°.Roy/cd )he/attainment)i Normal Hours of Source Operation: 10/1/2018 • Yes O No hours/day clays /week Seasonal use percentage: Dec -Feb: 25 Mar May: 25 weeks/year June -Aug: 25 Sept-Nnv: 25 Form APCD-2O1 - Reciprocating Intern& Combustion Engine APEN - Revision 1/2017 21 COLORADO b+,pr.TEnUJl ai wuL Ile Hi udln le Taub son m. Nil Permit Number: AIRS ID Number: 123 i9F22 / [Leave blank unless APCD has already assigned a permit # and AIRS ID] Section 4 - Engine Information Engi n Function; • PH m a yand Corr` Peaking i® Emergency Back' up Pump LI Water Pump LI Other: T - Compression What is the maximum number of hours this engine will be used for emergency baci• -up power? Engine Make: Caterpillar Engine Model: G3516C 250 hours/year SerialNimb±er': not yet issued What is, the maximum designed horsepower rating? 2175 hp What is the engine displacement? What is the naxirnum manufacturer's site -rating? 2175 hp kW 6683 BTU/hp-hr What is the engine Brake Specific Fuel Consumption at 100% Load? Engine Features: Cycle Type: El 2 -Stroke ±Stroke Ignition Source: g Spark Combustion: Compression Aspiration: Is this engine equipped with an Air/Fuel ratio controller (AFRO)? i Yes Lean Burn Natural If yes, what type of AFRC is in use? ■ O2 Sensor (mV) MI NCix Sensor (ppm) Other: is this engine equipped with a Low-Nox design? Engine Dates: What is the manufactured date of this engine? What date was this engine ordered? 2018 Yes No 2018 (estlmated) ■ • I /cyi Rich Burn Turbocharged What is the date this engine was first located to Cotorado? 2018 (estimated) What is the date this engine was first placed in service/operation? 2018 What is the date this engine commenced construction? 201; 8 What is the date this engine was last reconstructed or modified? n/a Is this APEN reporting an AOS replacement engine? Yes B No If yes, provide the make, model, and serial number of the old ertg,ine below: Engine Maker Engine Model: Serial Number,: 6 The serial number must be submitted if coverage under GPO? is requested, Form APCD-201 - Reciprocating Internal Combustion Engine APEN - Revision 1 /20'I7 Cot RA DO plop'Rill audltd Put Lit Fn!►4wrl*vt,M Permit Number: AIRS ID Number: 123 i9F22 [Leave blank unless APCD has already assigned a permit 1/ and AIRS ID] Section 5 - Stack Information Geographical Coordinates (L+atitude.lLcng!tudA or ,CiThQ VVGS84 (-104.74, 40.26) Operator Stack ID No. Above DischargeHeight Ground (Feet) bevel Ternp. r F) Flow (ACC Rate 1) Velocity Viseci GEC -1 Indicate the direction of the Stack outlet: (check one) Upward Horizontal indicate the stack opening and size: (check crhe) ■ ■ Circular Square/Rectangle Other. (describe): Downward Other (describe): Interior stack diameter (inches): Interior stack diameter (inches): I I Upward with obstructing raincap Interior stack depth (inches): Section 6 - Fuel Data and Throughput Information Fuel Use (SCF/ Rate @ 100% boti r) Load Actual (MMSCF Annual Fuel year) Use Requested ( Annual MSCF/year) Permit Limit? 14,406 3.60 From what year is the actual annual/ amount? Indicate the type of fuel usedU: t Pipeline Natural Gas Field Natural Gas Propane Landfill Gas Other (describe): (assumed fuel heating value of i ,x20 6 T ulscf) Heating value: BTU lscf (assumed fuel heating value of 2,300 MM ischh Heating Value: BTU/scf o pipeline gas Heating Value {give units): 1009 (expected) 7 Requested values will become permit limitations. Requested Limits) should consider future process growth If fuel heating value is different than the listed assumed value, provide this information in the "Other" field, Form APCD=201 - Reciprocating Internal Combustion Engine APEN - Revision 1/2017 COLORADO bepaanarrtor 01 -413: - ti f Litrinanr:Hrnif Permit Number: AIRS ID Number: 123 i9F2 / [Leave blank unless APCD has already assigned a permit $' and AIRS ID) Section 7 - Emissions Inventory Information Attach all emission calculations and emissionfactor documentation to this APEN form. The APCD website has a. Natural Gas Fired Engines Calculator available to assist with emission calculations. Is any emission control equipment or practice used to reduce emissions? •; Yes 1,7 Ho If yes, describe the control, equipment AND state the over-all control efficiency (% reduction): Pollutant Primary Control Equipment Description Overall OS reduction Requested Efficiency Control in emissions) TSP (PM) - P'M 1 a 5. P02.5. Sox NO _ VOC Co Other: Use the following tables to report criteria and non -criteria pollutant emissions from source: (Lice the data reported in Section 6 to calculate these emissions.) From what year is the following reported actva annual emissions data? Criteria Pollutant Emissions Inventory Pollutant Actual Annual Emissions Requested Emission Annual Larlira y Permit .7 t�s� Emission Factor Uncontrolled Emissions (Tori!≤fyeor) • Controlled Emissions (Tons/year) Uncontrolled Emissions Controlled Emissions Uncontrolled Basis Units 1 Source (AP -42, fg4 etc) (TonsI year) (Tons/year) Ti SP (PM) - P',fyi a awe ibtrombiu AP42 de min de stir, P� 3:.,.5 i de min de min a.ni o ihi tMilbiu AP -42 SOx a.Ou1 1 Mtlu AP -42 de Min" da rniri NOx 1.0 gMP rr rn n uE. (IL min c1e. min VOC 0.39 r HP -hr manulz de rain de rain CO 2,3 91HP-rnr r nuf. 126 1.33 Does the emissions source have any uncontrolled actual emissions of nonacriteria pollutants (e1g" HAP - hazardous air pollutant) equat to or 'greater than 250 lbs/yea.r? If yes, please use the following table to report the n.on=criteria pollutant (HAP) emissions from source: Yes No Non -Criteria Reportable Pollutant Emissions Inventory hremical Name Actual Annual. Emissions9 Emission Factor Chemical eC' Abstract Number ib' a Uncontrolled Bay i� Units. source (AP -42, Mfg. etc) . uncontrolled Emissions (Pounds/year; Qrltrralled (Po �nd5/ye Eirnissic r� t�s Formaldehyde 50000 Acetaldehyde 75070 - Acrolein 107028 Benzene 71432 Other. 7 Requested values Will become permit limitations, Requested linit(s) should consider future process growth., v Annual emissions fees will be based on actual controlled emissions reported, if source has not yet started operating, Leave blank. Form APCD-201 - Reciprocating Internal Combustion Engine APEN - Revision 1/2017 5 COLORADO bcpatencriS Math. IAA 'WIMP i4'4 Permit Number AIRS ID Number: 123 ,(9F / [Leave dank. unte5s APCD has already assigned a permit t and AIRS ID] Section & a Applicant Certification I hereby certify that all information contained herein and information submitted with this application is complete, true and correct. If this is a registration for coverage under general permit GP02, I further certify that this source is and will be operated in fuli compliance with each condition of genera( permit GP02F 1123118 Signatur4 of Legality Authorized Person (not a vendor or consultant) Date Joel Kenyon HSE Representative Name (please print) Title check the appropriate box to request a copy of the: • Draft permit prior to issuance • Draft permit prior to public notice (Checking any of these boxes way result in an increased fee and /or processing time) This emission notice is valid for five (5) years. Submission of a revised APEN is required 30 days prior to expiration of the five-year term, or when a reportabte change is made (significant emissions increase, increase production, new equipment, change in fuel type, etc). See Regulation No, 3, Pair. A, IILC. for revised APEN requirements. Send this form along with $152.90 and the General Permit For more information, or assistance call: registration fee of $1,500, if applicable to: Colorado Department of Public Health and Environment Air Pollution Control Division APCD-5S-41 4300 Cherry Creek Drive South Denver, CO 80246-1530 Small Business Assistance Program (303) 692-3175 or (303) 692-3148 Or visit the APCD website at; Make check payable to: https: ThAlww.col°rado, guv/cdphe/apcd Colorado Department of Public Health and Environment. Telephone: (303) 692-3150 Form APCD-2O1 Reciprocating Inle.rnal Combustion Engine APEN - Revision 1/2017 Uspentivitstratle COLORADO Sul art .dvf n lr0anmtrni 1/16/18: Latham Processing Plant Community Meeting Q&A • How does the proposed Latham plant differ from DCP's Mewbourne plant — specifically from an emissions perspective? We cannot speak to DCP's plant. For our Latham plant, we have kept nearby residents in mind throughout the design and planning process, and we have designed our facility to minimize potential impacts. Our engineering design to reduce emissions specifically goes beyond state and federal air quality requirements, and it includes using all electric compression, mole sieve dehydration, u ltra low -nitrogen oxide burners, low -emission components, thermal oxidizers, and other technologies. Because our motors are powered by electricity, there will be no e ngine emissions, except from an emergency generator engine • How are you planning on accessing the proposed plant? We will be accessing the plant from Weld County Road 35. Although the access road currently exists, it will likely be improved for the construction and operation of the plant. • When are you anticipating breaking ground on the proposed plant? We are tentatively planning on beginning construction on the plant shortly after Weld County approves our Use -by -Special -Review permit. Construction could begin as early as April. • A nearby plant's noisiest component is the slugcatcher. How is APC planning on minimizing noise from the slugcatcher? What type of insulation are you planning around it? o We have designed the slug catcher to reduce noise associated with sonic gas velocity and therefore do not plan on insulating the equipment as a reactive measure. • People who live nearby the proposed plant would like to see trees and landscaping to mitigate the proposed wall. Is that something APC would consider? o We will address the planting of trees and landscaping on a case -by -case basis. • Why did you choose this particular location? Why didn't you choose to site the location further to the east? o We chose to set the location back on the parcel for multiple reasons, including our desire to minimize impacts to surrounding residents and the need to respect setbacks from an existing oil and gas well on the parcel. • Will workers access the proposed plant from WCR 35? .._� Once the site is operational, we will access the plant from Weld County Road 35, which we have identified as the primary haul route during the construction of the facility. • Why is APC limited to 55 dba noise limits and other processing plants in Weld County are not? Our plant will comply with Weld County's current noise regulations,which limit daytime noise to 55 decibels (dBA) and nighttime noise to 50 dBA. Other processing plants in Weld County that were permitted before the current regulations were adopted can operate at the levels agreed to at the time of their original permits. • How does APC anticipate this proposed plant contributing to already high noise levels? o Our facility is designed to operate within Weld County's SO decibels (dBA) nighttime noise limit and 55 dBA daytime limit by insulating compressor buildings. Our noise reduction designs include electrically driven equipment, sizing equipment to avoid emitting high-pitched sounds, and building a 25 -foot engineered sound wall around the boundaries of the facility. • Will emissions data from the plant be made available? Will APC consider continuous air monitoring? o The air permit from the Colorado Department of Public Health and Environment (CDPHE) for our plant will establish emission limits for our facility and equipment. As part of complying with CDPHE regulations, we will conduct testing to demonstrate compliance, and we will submit the results of our emissions tests to the agency on a yearly basis. Once the results are submitted, they will be made public and available from CDPHE. CDPHE will also be conducting periodic inspections of our plant to ensure compliance. • Would APC be willing to post the emissions results on the portal? o We will post the results for the emissions listed in our CDPHE air permit on the portal on a yearly basis. • Can people opt in to the portal? Who would be able to opt in? Yes. The portal will be an additional resource and channel of communication for residents who live within two miles of the plant. • How does a reverse 911 call work? o Emergency services and counties encourage residents to register their mobile phones for notification. Please reach out to Weld County for more information. Here is an online resource as well: http://9llcolorado.org/emergency-notification- service!. • Is APC willing to reimburse the community for property value assessments to be done by a 3rd party? 7 We recognize that property values are very important to residents, and we will share updates with the community as and when we have any to provide. • Will APC share the potential impact radius of the proposed site? If so, will that happen before the Weld County Board of County Commissioners hearing? O After we complete our buffer zone and impact modeling, we will share it with the community, and we will do so in accordance with Weld County regulations. • Can you describe what happened in the Ramsey Plant explosion? o The Ramsey plant, which we acquired in November 2014, was not designed to the same standards that Anadarko plants are designed. In that incident, the plant was clearing a hydrate, or an ice plug, when a fire started under the slug catcher. The fire eventually resulted in an explosion. We have improved our processes following this incident, and we continue to implement the lessons we learned in the design and operation of our plants, including Latham. • Can you describe how you are taking the H2S out of the gas? o The H5, or hydrogen sulfide, is removed from the gas stream through a series of vessels containing H2S absorption material, which is typically made up of sand molecules and acts as a filter to capture any H2S that may be present. • Will APC build the community a muster point? Because immediate dangers posed by the plant fall within the boundaries of our property, we will not be building a muster point for residents outside our parcel. In the event that an emergency situation might affect the community, emergency services would be responsible for notifying the residents. • APC owns the land from WCR 35 to WCR 33. What are the plans for that property? o The Latham plant is the only Anadarko facility we currently have planned for this property. • Does APC plan on building another plant on this location? o Not at this time. We are designing and permitting the Latham plant to include three cryogenic units that have the capacity to process 200 million standard cubic feet per day (MMSCFD). As of January► 2018, we intend to install only two of these units. Cryogenic units cool natural gas to sub -zero temperatures in order to separate heavy hydrocarbon components, such as propane, from natural gas. • Will APC be sharing incoming lines into the plant with DCP? o No, the Latham plant will have its own feed. • Where do the pipelines entering the proposed plant come from? o All pipelines entering and leaving the facility will be built on the southern boundary of the parcel. From there, they will follow existing pipeline corridors to the east and west • Why do you need a compressor at Latham if you already have a compressor at Hambert? ..7 Compressor stations such as Hambert help transport natural gas from the field to our processing plants by boosting the pressure of the gas in order to feed it into the plant. At the plant, processes that separate and remove hydrocarbons and fluids from natural gas will reduce the pressure of the gas. Compressors at the plant are then needed to boost the pressure again to send the gas to utilities for sale to and use by consumers. • Can the community get a timeline on when APC plans on addressing the property value assessment question? o We recognize that property values are very important to residents, and we will share updates with the community as and when we have any to provide. • Is it possible to combine meetings going forward with DCP Midstream? o We will discuss the possibility of combining meetings with DCP. • Please address property values directly. o We recognize that property values are very important to residents, and we will share updates with the community as and when we have any to provide. • PDC is proposing another gas plant to be built in the vicinity. Is APC aware of PLC's plans? o We cannot speak to PDC's plans to develop beyond the wells the company plans to drill on our property. • What is the sizing of all high pressure lines coming into the proposed plant? o We currently plan to have two inlet high pressure (HP) pipelines, one 24 -inch pipeline, and one 16 -inch pipeline. We will also have two HP residue gas pipelines, both 24 inches in diameter, to transport residue or marketable gas away from the plant. • How long do you anticipate the construction phase of the proposed plant to last? o We anticipate construction of our plant to last 12 to 18 months. • What is a train? o A train is an incremental processing plant within the facility. For this plant, we plan to have two trains that can each process 200 million standard cubic feet of gas per day (MMSCFD), making up 400MMSCFD in plant throughput altogether. • DCP has established a Facebook page. Can APC utilize something similar? o We are committed to keeping you informed throughout the development of our plant. To that end, we are actively working on creating an opt -in website for residents that will allow us to share real-time operational updates, as well as information and resources regarding our facility. In addition, we can be reached via our Response Line at 866-248-9577 or AnadarkoColorado@anadarko.com from 7 a.m@ to 4 p.m. Monday to Friday, or via our Integrated Operations Center (IOC) at 970-506-9580 outside of those hours. Staffed 24 hours a day, 7 days a week, 365 days a year, the IOC has real-time _remote monitoring capabilities of our facilities and can immediately pinpoint issues associated with field alerts and alarms. • Will you grade the location before putting the wall up? o To ensure proper drainage, we will grade the site prior to erecting the wall. • How will you address the problem of prairie dogs and weed control on the property? o once the facility is operational, full-time staff will be employed at the site and will ensure that weeds are controlled. From: To: Cc: Subject: Date: Attachments: Keiser, Nathan Chris Gathman Smith, Elizabeth; Yeuna, Aileen Latham Community Meeting Summary - USR 18-0019 Thursday, May 24, 2018 4:22:38 PM Latham Plant USR Permit- Mitigating Strategies.pdf Latham Community Meeting Q&A.PDF Community Correspondence.pdf Chris, Here is a summary of the meetings that we have had with the Community surrounding our proposed Latham Plant. Please note that we deliberately chose to have multiple community meetings before submitting our USR application so we could proactively address concerns and then incorporate them into mitigation plans which were then included in our application. This was done in order to avoid addressing concerns during the hearing process or having to develop these plans as Conditions of Approval at a later date. Having the plans developed prior to hearings helps demonstrate our commitment to being a compatible part of the community and shows that we took actual community feedback into consideration when developing the plans. • 11/14/2017 —30 members of the community attend the our initial meeting — This was a science fair style meeting where we presented posters of all aspects of the facility ranging from gas processing fundamentals, site safety, location, and Weld County permitting process. Since the community was already familiar with DCP's Mewborne Plant the community was able to provide a fairly comprehensive list of what their concerns were. This is the exact list that was provided after our initial meeting and outlines the 5 specific concerns the community had. 1. Health O Pollution / Emissions ■ Short and long term impact to surrounding neighborhood caused by benzene and other pollutants o Anadarko to construct an onsite Emissions Station 2. Safety o Anadarko to provide an Impact Radius and Disaster plan for our community O Provide detailed summary of what is being transported and stored o Provide detailed analysis of what is flared and residual particulate percentages vs. norm 3. Property Valuation Assist the neighborhood with funding assessment by Kevin McArty, an assessor recommended by Wallace Grant of Lyons Gaddis, Attorneys at Law o Establish profit sharing with the community to offset property value loss 4. Sound and visual barrier O Anadarko to establish a 28' sound and visual barrier surrounding the proposed Latham plant O Barrier to be constructed prior to any other construction 5. Light mitigation a Anadarko to minimize lighting at night o Anadarko to provide plan for community review • 12/20/2017 — This meeting was only with 5-6 leaders representing the community. The meeting was to discuss what items needed to be included in the Communication Plan that would be a part of our USR application submittal. We discussed and collaborated on key deadlines for community notifications — The communication plan was included in the appendix of the USR application and is attached to this email for reference. Also included in the document are the sound, light, visual, and communication plans. • 1/16/2018 — This was another meeting where the entire community was invited (30-35 members of community in attendance). The purpose of the meeting was to present our Mitigation Plans and answer any direct questions from the community on our proposal. We did a formal presentation which attempted to address all 5 of the concerns raised by the community at the meeting held on 11/14. The community followed up with additional questions after this meeting, which we then answered via email and posted answers to the o nline Latham website. • 1/31/2018 — Met with representatives from the community to discuss property value concern. • 2/15/2018 — Met with representatives from the community to request profit-sharing proposal • 3/21/2018 — This meeting was held to present the online website dedicated to the sharing of information about the plant with the community. We also presented visual elevation profiles of what the facility would look like from various residences in the area. The Latham Community Q&A document was loaded to the online website to help answer additional questions that were brought up in the 1/16 meeting. • 5/29/2018 — Meeting scheduled for 5/29 per the community's request to discuss landscaping - Will provide details after the meeting is held — The community sent us a list of questions that they wanted clarity on. We responded to these questions via email on 5/14 but also agreed to the meeting on 5/29 as another venue to ensure the community had a thorough u nderstanding of our response. Please see Community Correspondence attachment for the e mail sent to us from the community and our response. Before you do anything with this info I'd like to walk you through everything in case you have any specific questions, but still wanted to get this to you before the weekend. Have a great long weekend Chris and thanks for your help again yesterday with Dacono. Nathan Nathan Se Keiser Regulatory Analyst — Municipal Planning Anadarko Petroleum Corporation 11099 18th Street I Denver, CO 80202 720-929-6896 r.rolostfti CiewilOOfftroi)+y Click here for Anadarko's Electronic Mail Disclaimer Keiser, Nathan From: Sent: To: Cc: Subject: Good morning Doug, Smith, Elizabeth Monday, May 14, 2018 11:56 AM Doug Tschudy; Keiser, Nathan; Piemot, Danielle Gerald Johnson RE: Neighborhood Communication to Anadarko - Request for Meeting Thank you for taking the time to talk on the phone last week and for passing along the questions that came up in your meeting. We appreciate your patience as we assembled these answers. I'm happy to address each of your points so everyone near our proposed plant has more clarity on our plans for the project. We are also working on identifying a date and time to meet with the community in the next few weeks. We will follow up shortly with some potential dates and times. Before we go into addressing your questions, I would like to emphasize that even though the points below may not be part of the USR application document per se, the majority of the items will be included in our USR approval and made legally binding. We will cover these items in our presentations to the Weld County Planning Commission and the Weld County Board of County Commissioners, and they will be incorporated into our USR approval as Development Standards, Conditions of Approval, and in the Improvement and Road Maintenance Agreement with Weld County. Wall: After hearing the residents' requests for a wall during our initial conversations with the community, we have proposed a 25' sound wall that will not only screen the facility, but will also provide sound -attenuating capabilities. We plan on constructing the wall after the Board of County Commissioners approves our USR, and we have requested that Weld County Public Works allow our grading permit to be released at the Board hearing so we can erect the wall prior to the bulk of our construction activities. Noise: Section 2.a (Noise Control) of the USR application states, "The operation of the processing facility will comply with Weld County noise standards for Nonspecified areas," The facility is located in an Agricultural Zone District, which is considered a "Nonspecified Area," and noise in these areas are limited to 50 dB and 55 dB during the daytime and nighttime, respectively. Please see the relevant section in the Code here: https://l ibrary.municode.comico/weldcou nty, codes, cha rtes_andcountycode?nodeld=CH14HEANARTI NoS14-9- 40MAPENOLE. Landscaping:. We still plan to honor our commitment to asses landscaping needs on a case -by -case basis for landowners most impacted by the facility. Additionally, we will provide landscaping around the perimeter of the plant, which will be addressed and made legally binding as a condition of approval for the USR. Weeds: Weeds will be controlled on the perimeter of the sound wall - please see section 2.d of the USR application on Weed Control. Please note that the USR covers the entire parcel of land, not just the facility or area contained within the sound wall. Haul route: 1 Our primary haul route will be from WCR 32 to WCR 35, which are the roads most suitable for bringing in crews and large equipment, and we intend to utilize this route for all construction activities. In the event that Weld County closes a road, we would have to use alternative routes to access the facility. Weld County Public Works does not allow signs to be placed in its rights of way (ROW). We have attempted putting up signs for many different projects elsewhere in the county and were asked to remove them. If there are residents who would be amendable to allowing us to place signs on their fence or just outside of Weld County's ROW, we support preparing and posting signs near these intersections. If residents notice a violation of our designated haul route, we encourage them to let us know by contacting the Anadarko Colorado Response Line (1-866-248-9577 or AnadarkoColorado@anadarko.com) as soon as possible so we can work with our contractors to correct the issue. Dust suppression: To keep dust suppressed at both the site and on the adjacent county roads, we will use water trucks to water the roads. We have designed a water pipeline at the facility that we will use to fill the water trucks. The wall, once constructed, will also help contain the dust. Roadside trash removal: We will remove roadside trash at least once a week, which will likely be part of the Road Maintenance Agreement that we will enter into with Weld County as part of the USR approval. Hours: The majority of construction activities will occur between the hours of 6 a.m. and 6 p.m. during the week. Work done in the evening or over weekends may occur if necessary, and these activities will generally be limited in scope, less impactful, and largely screened by the wall. Communication tower: The communication tower is a lattice -structure tower similar to many other communication towers located in the Agricultural Zone District in Weld County. We do not intend to disguise the tower as a tree. Aggregation: Our plant will not be aggregated with DCP's facility. Our plant will be operated in compliance with the emissions reporting requirements of the Colorado Department of Public Health and Environment (CDPHE) and the Environmental Protection Agency (EPA). Emissions of hazardous air pollutants, including hydrogen sulfide (H2S) and carbon dioxide (CO2), will be reported if the emission rates exceed the required reporting thresholds. This information will be available to the public through the appropriate agencies. Flare: We will monitor flare volumes to ensure compliance with our State air permit. The composition of the gas that is flared fluctuates depending on the gas traveling through the system at that particular moment. Security: The facility will be secured with video surveillance that is monitored by the Integrated Operations Center in Platteville, Colorado, 24 hours a day, 7 days a week. Locks will be installed on all of the gates, and Anadarko personnel will be on - site on a regular basis. Please do not hesitate to reach out should you or any community members have additional questions. 2 Thank you, Elizabeth From: Doug Tschudy cdoug@d I-t.com> Sent: Monday, April 16, 2018 5:20 AM To: Keiser, Nathan <Nathan.Keiser@anadarko.com>; Smith, Elizabeth <Elizabeth.Smith@anadarko.com>; Piernot, Danielle <Danielle.Piernot@anadarko.com> Cc: Gerald Johnson cgeraldjohnson733@gmail.com>; Doug Tschudy cdoug@dl-t.com> Subject: Neighborhood Communication to Anadarko - Request for Meeting Importance: High WARNING! This message originated from a source external to Anadarko. If you do not recognize the sender or are suspicious of the message content, forward this email to ITSecurity@anadarko.com for evaluation. DO NOT "Reply", "Open" attachments or "Click" on any links in a suspicious email. N athan, Elizabeth and Dani, We held a neighborhood meeting last week. We reviewed the USR and noted that it explicitly calls out "No Landscaping". As it had been mentioned to several of us that Anadarko would consider some landscaping for homeowners on a case by case basis, we felt compelled to get clarity on this. We learned from DCP that unless something was written in the USR, the company would not be held to any agreements made outside of the USR. As this would require an amendment to the pending USR already filed, we reviewed it in detail and have identified a few items that we would request be added to an amendment. The neighborhood is requesting a meeting with Anadarko to review. From the Submitted USR: 4. PROPOSED LANDSCAPING It is anticipated that the processing facility and laydown area will be enclosed with a 25' designed sound wall. This will not only provide visual mitigation but also as a security device for the life of the facility. Since the size of the wall helps screening and light pollution, no additional landscaping is proposed for this application. N eighborhood Requested Changes to the USR: Facility Construction • The processing facility and laydown area will be enclosed with a 25' designed sound wall. a Anadarko will schedule regular weed control on outside perimeter of sound wall • Communication tower to be masked as to not be an eyesore; pine tree such as exists on 125 and 144th Avenue • Work Hours be limited to 0600-1800 • No Sunday work • Noise and sight curtain in place prior to start of construction • Dust mitigation at construction site • Road side trash removal at least weekly 3 • Security monitoring 24/7 Landscaping • Landscaping will be added outside of the sound mitigation wall so it doesn't appear like an institution a Anadarko will provide 250 trees around the wall to improve aesthetics. These trees will be eight to ten feet in height, maintained and watered by drip line • Neighbors who are visibly impacted will have landscaping added at their residence o Residents within 1 mile of the facility will receive 1 eight to ten foot trees per every fifteen feet of affected property line view o After one year, they will be the responsibility of the home owner. Traffic Control • Designated haul route WRC 32 to WRC 35 only o "No construction traffic beyond this point" signage to be placed at intersections: CR40/CR33, CR42/CR35 and adjacent to construction site. • Haul route enforcement with fines or termination for violations • Notification to property owners for necessary construction deviations to haul route a Surrounding property owners to receive 7 days advance notification for planned deviations from Haul Route due to over -sized load requirements/permits, road construction, etc. Noise Control • USR does not state maximum decibel at Anadarko fenceline o During community meetings neighbors were assured that there will be a 55 decibel maximum a Anadarko will keep noise levels at or below 55 decibels during the day at 50 decibels at night (6:00PM M to 6:00AM) ) Health • Air quality pollution aggregation with all gas facilities in the immediate area. (DCP) o All future additions need to be aggregated o Operators are required to address aggregation when applying for permits for multiple facilities in an area where there are other emission sources already • Development Standard o The applicant shall notify the Weld County Department of Public Health and Environment and surrounding property owners within two miles of all compliance orders, on consent, or other enforcement actions by the Colorado Department of Public Health and Environment within 60 days of the date of notification. • Andarako to establish monthly monitoring and reporting to include: a Flaring events o Gas processing products, contaminants and percentage levels to include: 4 ■ Heavier gaseous hydrocarbons: Ethane (C2H6), propane (C3H8), normal butane](n- C4H 10), isobutane (i -C4H 1 0) ■ Acid gases: Carbon dioxide (CO2), hydrogen sulfide ((H2S) (Sour Gas)) and mercaptans such as methanethiol (CH3SH) and ethanethiol (C2 H5SH) ■ Nitrogen (N2) and helium► (He) ■ Natural gas condensate ■ Mercury / chlorides Hello