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Home My WebLink About20191338a a. USE BY SPECIAL REVIEW (USR) APPLICATION DEPARTMENT OF PLANNING ERVICE * 1555 N. 17TH AVENUE * GREELEY, CO 80631 wfvvw.weIdgov.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* 0 g 6 1 _ 2 6. g _ 0 0. 6 1 0 Address of site: Legal Description: ETN IE4 26565 LOTB RECE EMPT RE3128 Zone District: Agricullu'Acreage: FEE OWNER(S) OF THE .PROPERTY: Name: Matthew L Geib Company: Phone #: Street Address: c'A 12 digit number on Tax I.D. information, obtainable at Allow" weldgov corn). Section: 26 Township: 5 N Range: 65 Floodplain: CN ' eological Hazard: YCNQ Airport Overlay: yosi 1742 37TH AVENUE PL City/State/Zip Code: Name: Lisa R Gelb Email: GREELEY, CO 806343436 Company: Phone It: Street Address: 1742 37TH AVENUE PL IS- City/State/Zip Code: Name: Company: Phone #: Email: GREELEY, CO 806343436 Street Address: City/State/Zip Code: AISEMEr Email. APPLICANT OR: AUTHORIZED AGENT: (See below. Authorization must accompany ail applications signed by Authorized Agents) Name: Matthew IHasings Company: Rocky Mountain Midstream, LLC Phone #: 405-664-7823 Street Address: I Williams Center Email: matt.hastingswilliarrns.com City/State/Zip Code: Tulsa., OK 74172 PROPOSED USE: Construction of the proposed Auburn Compressor Station which will include up to eight compressors. I (We) hereby depose and state under penalties of perjury that all statements, proposals, and/or Wang 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 e. must sign this application. If an Authorized Agent signs, a letter of authorization from all fee owners must be included with the appiicatiorn. If a corporation is the fee owner, notarized evidence must be included indicating that the signatory has to legal authority to sign for th corporation. g: 1. ,y. Signature: Owner cr A horized Agent lvt:1/477 I c\51-1Asi ur-2 S Date Signature: Owner or Authorized Agent Date Print Name Print Name Rev 4/2016 DEPARTMENT OF PLANNING AND BUILDING DING DEPARTMENT OF PUBLIC HEALTH AND ENVIRONNMENT 1555 NORTH 17TH AVENUE GREELEY, CO 80631 AUTHORIZATION FORM FOR BUILDING, PLANNING AND HEALTH DEPARTMENT PERMITS AND SERVICES Matthew L Gelb Rock. __ Mountain Midstream LLC I, , - give permission to (Owner — please print) (Applicant/Agent — please print) to apply for any Planning, Building or Health Department permits or services on our behalf, for the property located at: Parcel # Q9fi12F>(}0001f} - PT NE4 26-5-65 LOT B REC EXEMPT Rt3128 Legal Description: See above26 of Section f Township 5 N, Range Subdivision Name: Property Owners Information: Lot Block Phone: _ Eamail: Applicant/Agent Contact Information: Phone' 701 578t4078 E -Mail: selery67grnail.com Email correspondence to be sent to: Owner Applicant/Agent X Both Postal service correspondence to be sent to: (choose r� R only one). Owner Applicant/Agent Additional Info: Owner Signature: r Owner Signature: _ • A Date: I I Date:. MEMORANDUM TO: PRE18-0208; Case File, pre -application DATE: November 1, 2018 FROM: Kris Ranslem, Planning Technician SUBJECT: Pre -Application Meeting prior to submitting USR for compressor station facility Attendees: Scott Fiery, Applicant Chris Gathman, Planning Max Nader, Planning Kris Ranslem, Planning On Thursday, November 1, 2018 an informal discussion took place at the Greeley Administrative Offices Conference Room regarding a proposed compressor station facility. (The legal description is Lot B RE -3128, Part NE4 Section 26, T5N, R65W of the 6th P.M.) Background Information: Rocky Mountain Midstream, LLC plans to construct a compressor facility with up to 8 compressors. The compressor station will be connected into the Greeley Directional and A►rdey pipelines moving natural gas to the Ft. Lupton Gas Plan and Keenesburg Gas Plant. The facility will be unmanned and the hours of operation will be 34/7. The applicant indicated that there may be up to 5 conex containers on site during construction. Building Department Staff was unavailable; however please contact Jose Gonzalez at 970-400-3540 for further direction. Building permits may be required, per Section 29-3-10 of the Weld County Code. Currently the following has been adopted by Weld County: 2012 International Residential Code, 2012 International Building Code, 2012 International Mechanical Code, 2012 International Plumbing Code, 2012 International Plumbing Code, 2012 International Fuel Gas Code, 2006 International Energy Conservation Code, and 2017 National Electrical Code. A building permit application must be completed and two complete sets of engineered and architectural plans bearing the wet stamp of a Colorado registered engineer or architect must be submitted for review for each structure. Pre -Manufactured non-residential structures are required to comply with State of Colorado Resolution 35 requirement. A complete code analysis prepared by a registered design professional is required and shall be submitted with All Commercial Building Permit Applications to Weld County. All new Commercial Building Projects require Fire District Notification (letter or email form). Proof shall be submitted with Commercial Permit applications. Final Fire District Approval is also required prior to issuing a Certificate of Occupancy and or closing a building permit. Building department staff strongly recommends a pre -application building permit submittal meeting, and, or a pre -construction meeting with Building Department staff for an overview of permit requirements. Please call 970-400-6100 and ask for a Plans Examiner. Building permit requirements can be found on the web -site link below: https://www.weldqov.comidepartmentsibuildinq/buildinq permit/construction handouts more information/ Health Department Staff was unavailable; however please contact Lauren Light at 970-400-2211 for further direction. Waste handling: Waste materials shall be handled, stored, and disposed in a manner that controls blowing debris, and other potential nuisance conditions. The applicant shall operate in accordance with Chapter 14, Article 1 of the Weld County Code. Please answer the following if applicable; indicate if there will be washing of vehicles or equipment, fuel storage, maintenance of vehicles or equipment, floor drains in shop, air emissions permit. Onsite dust: Fugitive dust should attempt to be confined on the property. Uses on the property should comply with the Colorado Air Quality Commission's air quality regulations. Sewage disposal information: Include in application how sewage disposal will be accommodated. If using a septic system provide a copy of the septic permit. Either utilize the County website www.co.weld.co.usimaps/propertyportal/ or call (970-304-6415) or stop by EH front counter and request a copy. Potable water information: Include in application how potable water will be provided. Provide a will serve letter or water bill from the water district or provide a copy of well permit. Portable toilets and Bottled water can be used for employees and customers per policy below: TO DEFINE WHEN PORTABLE TOILETS AND COMMERCIALLY BOTTLED WATER ARE ALLOWED Purpose: To define when portable toilets and commercially bottled water are allowed. Policy: Bottled water from a commercial source is allowed in the following circumstances: 1. Temporary or seasonal uses that are utilized 6 months or less per year (for example recreational facilities, firework stands, farmers markets) 2. Gravel mines 3. 10 or less customers or visitors per day And/or one of the following: 4. 2 or less full time (40 hour week) employees located on site 5. 4 or less part time (20 hour week) employees located on site 6. Employees or contractors that are on site for less than 2 consecutive hours a day Policy: portable toilets are allowed in the following circumstances: 1. Temporary or seasonal uses that are utilized 6 months or less per year (for example recreational facilities, firework stands, farmers markets) 2. Gravel mines 3. 10 or less customers or visitors per day And/or one of the following: 4. 2 or less full time (40 hour week) employees located on site 5. 4 or less part time (20 hour week) employees located on site 6. Employees or contractors that are on site for less than 2 consecutive hours a day Public Works County Road 47 is a paved road and is designated on the Weld County Functional Classification Map (Code Ordinance 2017-01) as a(n) local road, which requires 60 feet of right-of-way. The applicant shall delineate on the site map or plat the future and existing right-of-way and the physical location of the road. If the right-of-way cannot be verified it shall be dedicated. Pursuant to the definition of setback in the Weld County Code, Chapter 23, Article III, Section 23-3-50, the required setback is measured from the future right-of-way line. Be aware that physical roadways may not be centered in the right-of-way. This road is maintained by Weld County. County Road 54 is a paved road and is designated on the Weld County Functional Classification Map (Code Ordinance 2017-01) as a(n) arterial road, which requires 140 feet of right-of-way. The applicant shall delineate on the site map or plat the future and existing right-of-way and the physical location of the road. If the right-of- way cannot be verified it shall be dedicated. Pursuant to the definition of setback in the Weld County Code, Chapter 23, Article III, Section 23-3-50, the required setback is measured from the future right-of-way line. Be aware that physical roadways may not be centered in the right-of-way. This road is maintained by Weld County. Per Chapter 12, Article 4, Section 12-4-30.B, a Weld County Right -of -Way Use Permit is required for any project that will be occupying, constructing or excavating facilities within, and/or encroaching upon, any County rights -of -way or easement. Right -of -Way Use Permit instructions and application can be found at https://www.weldgov.comidepartments/publicworks/permits/. Weld County will not replace overlapping easements located within existing right-of-way or pay to relocate existing utilities within the County right-of-way. The applicant is proposing the use of an existing access on the site approx. 1460 feet south of County Road 54 on County Road 47. There are several existing accesses to the parcel, permitted and not permitted. Designate in the USR questionnaire and on the submitted drawing what the proposed access points to the parcel are and they will be reviewed at that time. Table 12A.2 Minimum Access Spacing Criteria (Feet) Access Element Arterial Collector Local Distance between Signalized Unsignalized intersections 2,640 1,320 N/A 1,320 N/A 330 Distance between accesses and intersections 660 a 660 330 Distance between access points 660 330 150 Per Chapter 12, Article 5, Section 12-5-30, an Access Permit is required for access to Weld County maintained roadways. We strongly encourage you to discuss your access with Public Works prior to laying out your site plan to ensure the approved accesses are compatible with your layout. Per Chapter 12, Article V, Section 12-5-30. F, when feasible, there shall be no net increase in the number of accesses to a public road. Minimum access spacing widths are shown in Weld County Code Appendix Table 12A-2. Please refer to Chapter 12 of the Weld County Code for more information regarding access. 12A.4.1 Geometric Design Type of Land Use Access Width Access Radii Single -Family Residential 20-24 ft. wide 25 ft. minimum Commercial/Industrial 24-36 ft wide 60 ft. minimum ACCESS CONTROL PLAN The Freedom Parkway (Weld County Road 54/37th Street) Access Control Plan has been developed to address access onto Freedom Parkway (CR 54/37t" Street) between Weld County Road 13 and County Road 49. More information about Weld County's access control plans can be located at: https://www.weldgov.comidepartments/public works/access control plans Due to the commercial use of the site, tracking control is required at the access(es). Acceptable tracking control devices include double cattle guards or 300 feet of asphalt or concrete pavement. The applicant is indicating that the site will be unmanned. Please submit a traffic narrative with application indicating what the traffic will be during construction and after construction. Traffic Narrative: 1. Describe how many► raundtrips/day are expected for each vehicle type: Passenger Cars/Pickups, Tandem Trucks, Semi-Truck/Trailer/RV (Roundtrip = 1 trip in and 1 trip out of site) 2. Describe the expected travel routes or haul routes for site traffic. 3. Describe the travel distribution along the routes (e.g. 50% of traffic will come from the north, 20% from the south, 30% from the east, etc.) 4. Describe the time of day that you expect the highest traffic volumes. Public Works will review the narrative and advise the applicant if more information or an engineered traffic study is required. Public Works may require an Improvements Agreement for one or all the following reasons: • Off -Site Public Improvements • Road Maintenance Agreement • Construction Maintenance Agreement • Access Improvements Agreement • On -Site Improvements for Subdivisions/PUDs An Improvements Agreement is required for sites with required offsite improvements per Chapter 12, Article 5, Section 12-5-60. Collateral is required to ensure the improvements are completed, and maintained. Improvements/Road Maintenance Agreement: An example agreement is available at: https://www.weidgov.com/UserFiles/Servers/Server 6/File/Departments/Public%20Works/DevelopmentRevie w/sprusr.pdf. It will detail the approved haul route(s), outline when offsite improvements will be triggered, and include a maintenance agreement for the haul routes. Possible mitigations included in the road maintenance agreement may include but are not limited to: dust control, specified haul routes, damage repairs, and future improvement triggers. Per Chapter 20, Article I, Section 20-1-90, any person commencing development may apply for credit against impact fees otherwise due, up to but not exceeding the full obligation for impact fees proposed to be paid pursuant to the provisions of this Chapter, for any contributions, construction or dedication of land accepted or received by the county for capital improvements of the same type as are eligible for expenditure of the impact fees. In order to receive the impact fee credit, a Front -End Contribution Agreement must be in place prior to approval of any land use case. The storm drainage criteria is located at: https://library.municode.com/co/weld county/codes/charter and county code?nodeld=CH23ZO ARTXIIS TDRCR A list of professional engineering consultants is available if you need help finding an engineer to assist you with your project at the following link: https://www.weldgov.com/UserFiles/Servers/Server 6/File/Departments/Public%20Works/DevelapmentR eview/List%20of%20Professional%20Engineering%20Firms.pdf This area IS within a Non -Urbanizing Drainage Area: Non -Urbanizing Drainage Areas generally require detention of runoff from the 1 -hour, 100 -year, storm falling on the developed site and release of the detained water at the historic runoff rate of the 1 -hour, 10 -year storm falling on the undeveloped site. Detention pond summarized in a drainage report is required unless the project falls under an exception to stormwater detention requirements per code section 23-12-30 F.1. To avoid holding up case processing, a minimum of either a preliminary drainage report or a drainage narrative with exception as shown below must be submitted with 7 -day case submittal information. Detention Pond Requirements: 1. A Drainage Report and Detention Pond Design shall be completed by a Colorado Licensed Professional Engineer and adhere to the drainage related sections of the Weld County Code. The Drainage Report must include a Certification of Compliance, stamped and signed by the PE, which can be found on the engineering website. A general Drainage Report Guidance Checklist is available on the engineering website. A Preliminary Drainage Report or a qualifying exception and Drainage Narrative shown below must be submitted for review at the time of the application. The applicants will be required to maintain the historic drainage flows and run-off amounts that exist from the property. A Weld County Grading Permit will be required if disturbing more than 1 acre. Grading Permit applications are accepted after the planning process is complete (map recorded). An Early Release Request Form may be entertained only after the applicant and Planning Department have reviewed the referral and surrounding property owner comments. The Early Release Request may or may not be granted depending on referral comments and surrounding property owner concerns. Contact an Engineering representative from the Planning Department for more information. Application Fees: 1-5 Acres/ $50, 5.1 - 20 Acres/$100, 20.1 Acres or Greater/$200 + $1 per acre over 20. A Construction Stormwater Permit is also required with the State for disturbing more than 1 acre. Contact: Colorado Department of Public Health and Environment, Water Quality Control Division, Permit Support Staff at 303-692-3517. A Site Plan will be required identifying the following (if applicable): Show and label location of existing road, existing road right-of-way, future road right-of-way, and easements Show and label the unmaintained section line right-of-way Show and label location of the access (es) and label with access permit number Show and label the access turning radii (Residential — 25' Commercial — 60') Show and label the approved tracking control o Show and label location of drainage related features i.e. detention pond(s), ditches, etc... Detention ponds shall be labeled as "No Build/Storage Area" and include design volume o Show and label the drainage flow arrows showing how the stormwater flows across the property Show and label the parking and traffic circulation flow arrows showing how the traffic moves around the property Please contact the following staff regarding the following Public Works issues: Access Permits & Improvements Agreements: Evan Pinkham epinkham weldgov.com 970-400-3727 Traffic: Mike McRoberts mmcrobertsweldgov.com 970-400-3798 MS4 Areas: Lyndsay Holbrook Iholbrookweldgov.com 970-400-3788 Right -of -Way Permits: Amy Joseph ajoseph©weldgov.com 970-400-3764 Drainage: Hayley Balzano hbalzanoweldgov.com 970-400-3738 Planning Department Additional fees may be included with the Building Permit such as Road Impact, County Facilities and Drainage fees. Please refer to the handout provided. Screening of the parking area or outdoor storage may be required from any adjacent landowners or public rights -of -way. Weld County has a Coordinated Planning Agreements (CPA) with the Town of Evans and Kersey. The Planning Director will contact the Town Managers to give notice of this pre -application meeting. Staff advised the applicants to contact Evans and Kersey regarding possible land use permitting including possible annexation. Please identify any proposed lighting or signs on the Site Plan. Lighting needs to be downcast and shielded. A 16sf sign is allowed in the Agricultural Zone District; however, if there are potentially any additional or larger signs please include those in the application. The applicant indicated that they have held community meetings with the surrounding community. Staff urged the applicant to contact staff for any questions: Planner on Call available Monday through Friday 7:30 a.m. to 4:30 p.m. or contact Max Nader at 970-400- 3527 or mnader@welegov.com or Chris Gathman at 970-400-3537 or at cgathman@weldgov.com Staff provided information on Colorado's Enterprise Zone (EZ) program which provides state income tax credits to encourage businesses to locate/expand in designated economically distressed areas of the state. The WeldCounty EZ program is administered by UpstateColorado Economic Development. The applicant will submit a Subdivision Exemption for the leasehold area. Staff explained the USR process. The applicant shall submit 1 packet for a 7 -day completeness review. After the 7 -day completeness review the applicant will be informed of what items are still required to make the application complete. Staff requested that the applicant submit the remaining material in electronic form. Upon submittal of a completed application it will be sent out for referral for 28 days. The applicant will then meet with their Planner to discuss the referrals and address as many of the referrals as possible. At that meeting.. the Planning Commission hearing will be scheduled. The Board of County Commissioners hearing typically► follows approximately 3 weeks after the Planning Commission hearing. The above notes are provided as a courtesy to the applicant. While we strive to help identify as many potential issues upfront during the pre -application meeting we cannot anticipate every issue that may come up during the formal application process. The information contained herein has been placed on file with the Department of Planning Services. The pre -application is valid for a period of one (1) year from the date of pre - application. If a formal application is not received following the time period specified herein the Planning Department reserves the right to require a new pre -application meeting. Please note that all land use, building and impact fees are subject to change throughout this time period. End memorandum. Williams Rocky Mountain Midstream, LLC Proposed Facility: Auburn Compressor Station PROJECT DESCRIPTION Rocky Mountain Midstream, LLC is in the process of expanding operations in Weld County, Colorado. This project will include a compressor station and associated equipment to aid in the transportation of natural gas. The proposed Auburn Compressor Station is located between County Road 45 (approximately 2,671 -feet or .51 -miles east of CR 45) and County Road 47 (approximately 1,942 -feet or .37 -miles west of CR 47), and south of County Road 54 (approximately 1,834 -feet or .35 -miles south of CR 54). Access to the compressor station will be located on County Road 47. Approximately ten acres of Parcel Number 096126000010. The legal description for Parcel Number 096126000010 is PT NE4 26-5-65 LOT B REC EXEMPT RE -3128, located in Section 26, Township 5N, Range 65W. The site address for the station has not yet been determined. Rocky Mountain Midstream, LLC intends to construct the Auburn Compressor Station that will include up to eight compressors, a slug catcher,metering, dehydration, an enclosed combustor, up to two MCC buildings, a fuel gas skid, small tanks, pump skid, vapor recovery unit, instrument air building, and up to a 60 -foot communication antenna. This Compressor Station will be connected into the Greeley Directional and Ardey pipelines moving natural gas to the Fort Lupton Gas Plant (USRI7-0059) and Keenesburg Gas Plant. The compressor station is an un-manned facility. The hours of operation will be 24 hours a day 365 days per year. Because the station is unmanned, sewer and water are not required and are not proposed for this facility. Following Weld County Health Department policy, temporary construction personnel will use bottle water, and portable toilets will be provided. After construction is complete, traffic to the site will be limited to short daily site visits. Up to four operators will make a daily visit. Maintenance projects or unexpected operational conditions will occasionally increase the number of personnel on site. Site is 10 acres, more or less. The site will disturb approximately 4 acres. There will be no asphalt, gravel will cover approximately 100,000 ft2, buildings will cover approximately 12,130 ft2, 8,000 ft2 will remain bare ground, and the remaining areas will be reclaimed with native grasses. Site fencing will be a 7' chain link with desert tan fire resistant privacy slats with a minimum of 80% opacity. Less than 10 construction trailers and less than 10 Conex storage containers will be required for construction. Up to a 60 -foot antenna is proposed for this site. Rocky Mountain Midstream, LLC Proposed Facility: Auburn Compressor Station All items presented in this application are preliminary and are subject to change until final design is complete. PROJECT OVERVIEW Compressor stations play an integral part in natural gas infrastructure by expanding pipeline capacity and enhancing the efficiency of moving natural gas. The Auburn station will aid in the transportation of natural gas from wellhead production into Rocky Mountain Midstream's existing processing facilities. Planning Questions: 1. Explain, in detail the proposed use of the property. Natural gas requires pressure as a motive force for transportation. This station raises the pressure of natural gas to allow for more efficient travel along pipelines. Rocky Mountain Midstream intends to construct the Auburn Compressor Station that will include up to eight compressors, a slug catcher, metering, dehydration, an enclosed combustor, up to two MCC buildings, a fuel gas skid, small tanks, pump skid and up to a 60 -foot communication antenna. This Compressor Station will be connected into the Greeley Directional and Ardey pipelines moving natural gas to the Fort Lupton Gas Plant (USRI 7-0059) and Keenesburg Gas Plant. Emissions from the dehydration process will be routed to an enclosed combustor. The combustor will be smokeless and will not have an open flame. 2. Explain how this proposal is consistent with the intent of the Weld County Code, Chapter 22 of the Comprehensive Plan. Section 22-2-10(D) of the Weld County Code states that "extraction of natural resources is an important part of the economy of the County" The proposed compression facility will contribute to the expansion of the county's industrial economic base by providing increased capacity for future marketing of oil and gas production in Weld County. Additionally, Section 22-5-100(A) states that a County goal is to "promote the reasonable and orderly exploration and development of oil and gas mineral resources." The proposed facility is consistent with this section. Per Chapter 22, oil and gas facilities are allowed as a use by right in the A (Agricultura) Zone District. Oil and gas storage facilities, oil and gas support, and associated services require a Use by Special Review (USR permit in Weld County. Section 22-2-20. G.2.A Policy 7.2 states "Conversion of agricultural/and to nonurban residential, commercial and industrial uses should be accommodated when the subject site in an area that can support such development and should attempt to be compatible with the region." The proposed site is in a semi -rural area where there is a significant amount of oil and gas activity already occurring. 2 Rocky Mountain Midstream, LLC Proposed Facility: Auburn Compressor Station 3. Explain how this proposal is consistent with the intent of the Weld County Code, Chapter 23 (zoning) and the zone district in which it is located. The proposed site is in a less densely populated area within the Agricultural Zone district in proximity to a significant amount of oil and gas infrastructure. Section 23-3-40 -40 indicates that oil and gas support and service facilities are acceptable as a Use by Special Review (USR) within the district. Additionally, section 23-3-10 indicates that uses that are "more intense and have a potentially greater impact" are permitted within the A (Agricultural) zone district. 4. Describe what type of land uses surround the site. Explain how the proposed use is consistent and compatible with surrounding land uses. The surrounding parcels are classified as agricultural properties. 5. What are the hours and days of operation? (e.g. Monday thru Friday 8:00 a.m. to 5:00 p.m.) The proposed station is an unmanned facility. The hours of operation will be 7 days a week, 24 hours a day, 365 days per year. 6. List the number of full time and/or part time employees proposed to work at this site. There will be no permanent employees working on -site. Up to four operators are expected daily for inspection and maintenance. Maintenance projects or unexpected operational conditions will occasionally increase the number of personnel on site. 7. If shift work is proposed include the number of employees per shift. No shift work is proposed. 8. List the number of people who will use this site. Include contractors, truck drivers, customers, volunteers, etc. After construction is complete, traffic to the site will be limited to short daily site visits. Up to four operators will make a daily visit, Maintenance projects or unexpected operational conditions will occasionally increase the number of personnel on site. 9. If this is a dairy, livestock confinement operation, kennel, etc., list the number and type of animals. No animals will be on site. Rocky Mountain Midstream, LLC Proposed Facility: Auburn Compressor Station 10. Describe the type of lot surface and the square footage of each type. (e.g. asphalt, gravel, landscaping, dirt, grass, buildings). The proposed site is 10 acres, more or less. The site will disturb approximately 4 acres. There will be no asphalt, gravel will cover approximately 100,000 ft2 buildings will cover approximately 12,130 ft, 8,000 ft2 will remain► bare ground, and the remaining areas will be reclaimed with native grasses. 11. How many parking spaces are proposed? How many handicapped (ADA) parking spaces are proposed? No parking spaces are proposed. 12. Explain the existing and proposed landscaping for the site. The existing site is a greenfield site with agricultural crops as primary vegetation. A Landscape Plan can be developed upon request from the adjacent property owners. 13. Describe the type of fence proposed for the site (e.g. 6 -foot chain link with earth tone slats). The proposed fence will be a 7' chain link. Site fencing will be a chain link fence with tan fire-resistant privacy slates. 14. Describe the proposed screening for all parking and outdoor storage areas. If the site is located in a floodplain outdoor storage is restricted. As needed the site may be screened or landscaped. A Screening Plan can be developed upon request from the adjacent property owners. 15. Explain any proposed reclamation procedures when termination of the Use by pecial Review activity occurs. If the compressor station is deemed obsolete, the station closure will follow all Federal, State and Local (County) regulations. Please reference the Decommissioning Plan provided in this packet 16. Who will provide fire protection to the site? LaSalle Fire Protection District. Rocky Mountain Midstream, LLC Proposed Facility: Auburn Compressor Station 17. List all proposed on -site and off -site improvements associated with the use (e.g. landscaping, fencing, buildings, drainage, turn lanes, etc.) and a timeline of when you will have each one of the improvements completed. No offsite improvements are proposed as part of this project. Onsite improvements will include perimeter fencing for the facility, and a gravel road on the property to access the facility. Construction activities are expected to begin following the approval of this Use by Special Review (USR) request and the applicable Federal, State, and Local permits and will last approximately 4-6 months. Restoration of the site and final clean-up will begin immediately following completion of construction activities. Engineering Questions: 1. Describe how many roundtrips/day are expected for each vehicle type: Passenger Cars/Pickups, Tandem Trucks, Semi-Truck/Trailer/RV (Roundtrip = '1 trip in and 1 trip out of site). During construction, semi -tractor trailers (50 trips) will be used to haul equipment and materials to the site, along with passenger cars / trucks (150 trips) for site workers and construction management. Following construction of the facility, during normal operation, the following vehicles are anticipated to access the site: Passenger Cars/Pickups (approximately 2 trips per day) and 200 Bbl. Tanker Trucks/Tandem Trucks (approximately 4 trips per week). 2. Describe the expected travel routes for site traffic. During construction traffic will travel primarily from keenesburg, traveling north on WCR 49 to WCR 54 and then travel west to WCR 47. Traffic will then head south on WCR 47 approximately .20 miles to an existing access. 3. Describe the travel distribution along the routes (e.g. 50% of traffic will come form the north, 20% form the south, 0% from the east, etc.) 90-95% will come from the South -Fast. 4. Describe the time of day that you expect the highest traffic volumes from above. During construction, the heaviest travel times will be from 6 am to 7am, the morning start times, and 5pm to 6 pm, the end of work day. 5 Rocky Mountain Midstream, LLC Proposed Facility: Auburn Compressor Station 5. Describe where the access to the site is planned. From the intersection of WCR 54 and WCR 47, approximately .20 miles south will be an existing access which will used to access the site. 6. Drainage Design: Detention pond summarized in a drainage report is required unless the project fails under an exception to Stormwater detention requirements per code section 23-12-30 F.1. The drainage and detention pond report will follow all requirements of the Stormwater Drainage Code located under Chapter 23, Article 12 Storm Drainage Criteria. The detention pond will be designed following the above code and Urban Drainage Flood Control District (UDFCD) criteria for a Non -Urbanizing Drainage Area and will retain the 1 -hour 100 -year storm with the release rate for the 1 -hour 10 -year storm events. A narrative with the preliminary drainage concept described is attached in this packet Environmental Health Questions: 1. What is the drinking water source on the property? If utilizing a drinking water well include either the well permit or well permit application that was submitted to the state -Division of Water Resources. If utilizing a public water tap include a letter from the Water District, a tap or meter number, or a copy of the water bill. Because this station is unmanned, potable water is not required and is not proposed for this facility. Following Weld County Health Department policy, temporary construction personnel will use bottled water. 2. What type of sewage disposal system is on the property? If utilizing an existing septic system provide the septic permit number. If there is no septic permit due to age of the existing septic system, apply for a septic permit through the Department of Public Health and Environment prior to submitting this application. If a new septic system will be installed, please state "a new septic system is proposed". Only propose portable toilets if the use is consistent with the Department of Public Health and Environment's portable toilet policy. Because this station is unmanned, sewage disposal is not required and are not proposed for this facility. Following Weld County Health Department policy, portable toilets will be placed on site and cleaned regularly. 3. If storage or warehousing is proposed, what type of items will be stored? The warehousing of materials or equipment on site will be minimal. The following materials are expected for a plant of this type: 1) Lube Oil 2) Solvents 3) Grease 4) Filters 5) Gasket Material 6 Rocky Mountain Midstream, LLC Proposed Facility: Auburn Compressor Station Any oils or solvents stored and handled as per the guidance provided on the Safety Data Sheets (SDS). Any liquid waste will be temporarily stored in a container approved for that waste. Any solid wastes (i.e. used oil filters) will also be temporarily stored in containers approved for the waste in question. Clean Harbors (cleanharbors.com) or a similar third party waste recycling/disposal service will be used to recycle or dispose of all chemical/oil wastes as required by state and federal regulations. During construction less than 10 Conex boxes will be utilized to store equipment, tools etc. 4. Describe where and how storage and/or stockpile of wastes, chemicals, and/or petroleum will occur on this site. The storage storage and/or stockpile of wastes, chemicals, and/or petroleum on site will be minimal. The following materials are expected for a plant of this type: 1) Lube Orl 2) Solvents 3) Grease 4) Filters 5) Gasket Material Any oils or solvents stored and handled as per the guidance provided on the Safety Data Sheets (SDS). Any liquid waste will be temporarily stored in a container approved for that waste. Any solid wastes (i.e. used oil filters) will also be temporarily stored in containers approved for the waste in question. Clean Harbors (cleanharbors.com) or a similar third party waste recycling/disposal service will be used to recycle or dispose of all chemical/oil wastes as required by state and federal regulations. 5. If there will be fuel storage on site indicate the gallons and the secondary containment. State the number of tanks and gallons per tank. Fuel will not be stored on site in quantities greater than five (5) gallons; the facility will operate using a small portion of the inlet gas as fuel for the inlet compressors and for the combustor. 6. If there will be washing of vehicles or equipment on site indicate how the wash water will be contained. No vehicle washing is proposed for this site. If there will be floor drains indicate how the fluids will be contained. Floor drains are not proposed. 7 Rocky Mountain Midstream, LLC Proposed Facility: Auburn Compressor Station 8. Indicate if there will be any air emissions. (e.g. painting, oil storage, etc.) Rocky Mountain Midstream, LLC has applied for all necessary construction permits with CDPHE. 9. Provide a design and operations plan if applicable. (e.g. composting, landfills, etc.) NIA 10. Provide a nuisance management plan if applicable (e.g. dairies, feedlots, etc.) NIA 11. Additional information may be requested depending on type of land use requested. Rocky Mountain Midstream, LLC will respond with any additional information required by Weld County. Building Questions: 1. List the type, size (square footage), and number of existing and proposed structures. Show and label all existing and proposed structures on the USR drawing. Label the use of the building and the square footage. Up to three compressor buildings. The compressor buildings combined cover approximately 150,000 square feet. The buildings will enclose the compressor units to control noise and for protection from the elements. Up to eight compressors: Compression will be used to boost the pressure of natural gas. Slug catcher and separator: The slug catcher is a high -volume vessel intended to remove condensed liquids prior to compression. The separator will separate water from hydrocarbon liquids. A vapor recovery unit (VRU) will compress vapors off the separator to route back into the gas stream. Metering: Metering equipment serves to measure gas flow into and out of the compressor station. Metering the gas allows for measuring volumes consumed for compressor engine fuel and calculating total volumes for operations that are reported to Discovery gas control. Three dehydration systems: The dehydration unit is designed to remove water from the natural gas stream prior to delivery into the dry natural gas pipeline. Three enclosed combustors: The combustors an emissions control device for incinerating vapors that are a byproduct of the dehydration process. Up to► two MCC Buildings: Will house all power distribution equipment as well as motor starters and SCADA system. Instrument Air Building: Will house all equipment associated with generated instrument air. 8 Rocky Mountain Midstream, LLC Proposed Facility: Auburn Compressor Station Slop Tanks: The tanks are designed to capture small amounts of produced water from the slug catcher, compressor suction scrubbers' other sources onsite. Volumes are expected to be small, requiring truck loadout once every 3-4 days. 2. Explain how the existing structures will be used for this USR? There are no existing structures on the site. 3. List the proposed use(s) of each structure, Up to three compressor buildings. The compressor buildings combined cover approximately 150,000 square feet. The buildings will enclose the compressor units to control noise and for protection from the elements. Up to eight compressors: compression will be used to boost the pressure of natural gas. Slug catcher and separator. The slug catcher is a high -volume vessel intended to remove condensed liquids prior to compression. The separator will separate water from hydrocarbon liquids. A vapor recovery unit (VRU) will compress vapors off the separator to route back into the gas stream. Metering: Metering equipment serves to measure gas flow into and out of the compressor station. Metering the gas allows for measuring volumes consumed for compressor engine fuel and calculating total volumes for operations that are reported to Discovery gas control. Three dehydration systems: The dehydration unit is designed to remove water from the natural gas stream prior to delivery into the dry natural gas pipeline. Three enclosed combustors: The combustor is an emissions control device for incinerating vapors that are a byproduct of the dehydration process. Up to two MCC Buildings: Will house all power distribution equipment as well as motor starters and s DADA system. Instrument Air Building: Will house all equipment associated with generated instrument air. Slop Tanks: The tanks are designed to capture small amounts of produced water from the slug catcher, compressor suction scrubbers' other sources onsite. Volumes are expected to be small, requiring truck loadout once every 3-4 days. Williams Rocky Mountain Midstream, LLC Proposed Facility: Auburn Compressor Station PROJECT DESCRIPTION Rocky Mountain Midstream, LLC is in the process of expanding operations in Weld County, Colorado. This project will include a compressor station and associated equipment to aid in the transportation of natural gas. The proposed Auburn Compressor Station is located between County Road 45 (approximately 2,671 -feet or .51 -miles east of CR 45) and County Road 47 (approximately 1,942 -feet or .37 -miles west of CR 47), and south of County Road 54 (approximately 1,834 -feet or .35 -miles south of CR 54). Access to the compressor station will be located on County Road 47. Approximately ten acres of Parcel Number 096126000010. The legal description for Parcel Number 096126000010 is PT NE4 26-5-65 LOT B REC EXEMPT RE -3128, located in Section 26, Township 5N, Range 65W. The site address for the station has not yet been determined. Rocky Mountain Midstream, LLC intends to construct the Auburn Compressor Station that will include up to eight compressors, a slug catcher, metering, dehydration, an enclosed combustor, up to two MCC buildings, a fuel gas skid, small tanks, pump skid, vapor recovery unit, instrument air building, and up to a 60 -foot communication antenna. This Compressor Station will be connected into the Greeley Directional and Ardey pipelines moving natural gas to the Fort Lupton Gas Plant (USR17-0059) and Keenesburg Gas Plant. The compressor station is an un-manned facility. The hours of operation will be 24 hours a day 365 days per year. Because the station is unmanned, sewer and water are not required and are not proposed for this facility. Following Weld County Health Department policy, temporary construction personnel will use bottle water, and portable toilets will be provided. After construction is complete, traffic to the site will be limited to short daily site visits. Up to four operators will make a daily visit. Maintenance projects or unexpected operational conditions will occasionally increase the number of personnel on site. Site is 10 acres, more or less. The site will disturb approximately 4 acres. There will be no asphalt, gravel will cover approximately 100,000 ft2, buildings will cover approximately 12,130 ft2, 8,000 ft2 will remain bare ground, and the remaining areas will be reclaimed with native grasses. Site fencing will be a 7' chain link with desert tan fire resistant privacy slats with a minimum of 80% opacity. Less than 10 construction trailers and less than 10 Conex storage containers will be required for construction. Up to a 60 -foot antenna is proposed for this site. Rocky Mountain Midstream, LLC Proposed Facility: Auburn Compressor Station All items presented in this application are preliminary and are subject to change until final design is complete. PROJECT OVERVIEW Compressor stations play an integral part in natural gas infrastructure by expanding pipeline capacity and enhancing the efficiency of moving natural gas. Natural gas requires pressure as a motive force for transportation. This facility will raise the pressure of natural gas to allow for more efficient travel through the pipelines so that it can be transported to a downstream facility for further processing, Natural gas will enter and exit the facility via steel pipelines. The Auburn station will aid in the transportation of natural gas from wellhead production into Rocky Mountain Midstream's existing processing facilities. Planning Questions: 1. Explain, in detail the proposed use of the property. Rocky Mountain Midstream intends to construct the Auburn Compressor Station that will include up to eight compressors, a slug catcher, metering, dehydration, an enclosed combustor, up to two MCC buildings, a fuel gas skid, small tanks, pump skid and up to a 60 -foot communication antenna. This Compressor Station will be connected into the Greeley Directional and Ardey pipelines moving natural gas to the Fort Lupton Gas Plant (USRI 7-0059) and Keenesburg Gas Plant Emissions from the dehydration process will be routed to an enclosed combustor. The combustor will be smokeless and will not have an open flame. 2. Explain how this proposal is consistent with the intent of the Weld County Code, Chapter 22 of the Comprehensive Plan. Section 22-2-10(D) of the Weld County Code states that "extraction of natural resources is an important part of the economy of the County." The proposed compression facility will contribute to the expansion of the county's industrial economic base by providing increased capacity for future marketing of oil and gas production in Weld County. Additionally, Section 22-5-100(A) states that a County goal is to "promote the reasonable and orderly exploration and development of oil and gas mineral resources." The proposed facility is consistent with this section. Per Chapter 22, oil and gas facilities are allowed as a use by right in the A (Agricultural) Zone District. Oil and gas storage facilities, oil and gas support, and associated services require a Use by Special Review (USR) permit in Weld County. Section 22-2-20. G.2.A Policy 7.2 states "Conversion of agricultural/and to nonurban residential, commercial and industrial uses should be accommodated when the subject site in an area that can support such development and should attempt to be compatible with the region." The proposed site is in a semi -rural area where there is a significant amount of oil and gas activity already occurring. Rocky Mountain Midstream, LLC Proposed Facility: Auburn Compressor Station 3. Explain how this proposal is consistent with the intent of the Weld County code, chapter 23 (Zoning) and the zone district in which it is located. The proposed site is in a less densely populated area within the Agricultural Zone district in proximity to a significant amount of oil and gas infrastructure. Section 23-3-40 indicates that oil and gas support and service facilities are acceptable as a Use by special Review (USR) within the district Additionally, section 23-3-10 indicates that uses that are "more intense and have a potentially greater impact" are permitted within the A (Agricultural) zone district. 4. Describe what type of land uses surround the site. Explain how the proposed use is consistent and compatible with surrounding land uses. The surrounding parcels are classified as agricultural properties. 5. What are the hours and days of operation? (e.g. Monday thru Friday 8:00 am. to 5:00 m The proposed station is an unmanned facility. The hours of operation will be 7 days a week, 24 hours a day, 365 days per year. Unless there is an operational requirement, employees will visit the site between the hours of 7:00 a.m. and 5:00 p.m. 6. List the number of full time and/or part time employees proposed to work at this site. There will be no permanent employees working on -site. Up to four operators are expected daily for inspection and maintenance. Maintenance projects or unexpected operational conditions will occasionally increase the number of personnel on site. 7. If shift work is proposed include the number of employees per shift. No shift work is proposed. 8. List the number of people who will use this site. Include contractors, truck drivers, customers, volunteers, etc. After construction is complete, traffic to the site will be limited to short daily site visits. Up to four operators will make a daily visit Maintenance projects or unexpected operational conditions will occasionally increase the number of personnel on site. 9. If this is a dairy, livestock confinement operation, kennel, etc., list the number and type of animals. No animals will be on site. Rocky Mountain Midstream, LLC Proposed Facility: Auburn Compressor Station 10. Describe the type of lot surface and the square footage of each type. (e.g. asphalt, gravel, landscaping, dirt, grass, buildings). The proposed site is 10 acres, more or less. The site will disturb approximately 4 acres. There will be no asphalt, gravel will cover approximately 100,000 ft2, buildings will cover approximately 12,130 ft' 8,000 ft2 will remain► bare ground, and the remaining areas will be reclaimed with native grasses. 11. How many parking spaces are proposed? How many handicapped (ADA) parking spaces are proposed? This is not a manned facility, so no parking spaces are proposed. As employees visit the site, they will park near the equipment that they are at the site to service. 12. Explain the existing and proposed landscaping for the site. The existing site is a greenfield site with agricultural crops as primary vegetation. A Landscape Plan can be developed upon request from the adjacent property owners. 13. Describe the type of fence proposed for the site (e.g. 6 -foot chain link with earth tone slats). The proposed fence will be a 7' chain link. Site fencing will be a chain link fence with tan fire-resistant privacy slates. 14, Describe the proposed screening for all parking and outdoor storage areas. If the site is located in a floodplain outdoor storage is restricted. As needed the site may be screened or landscaped. A Screening Plan can be developed upon request from the adjacent property owners. 15. Explain any proposed reclamation procedures when termination of the Use by Special Review activity occurs. If the compressor station is deemed obsolete, the station closure will follow all Federal, State and Local (County) regulations. Please reference the Decommissioning Plan provided in this packet 16. Who will provide fire protection to the site? The site is in the LaSalle Fire Protection District. The applicant has met with Captain Zach Hill prior to submitting the application. 4 Rocky Mountain Midstream, LLC Proposed Facility: Auburn Compressor Station 17. List all proposed on -site and off -site improvements associated with the use (e.g. landscaping, fencing, buildings, drainage, turn lanes, etc.) and a timeline of when you wilt have each one of the improvements completed. No offsite improvements are proposed as part of this project Onsite improvements will include perimeter fencing for the facility, and a gravel road on the property to access the facility. Construction activities are expected to begin following the approval of this Use by Special Review (USR,) request and the applicable Federal, State, and Local permits and will last approximately 4-6 months. Restoration of the site and final clean-up will begin immediately following completion of construction activities. Engineering Questions: I. Describe how many roundtripslday are expected for each vehicle type: Passenger Cars/Pickups, Tandem Trucks, Semi-Truck/Trailer/RV (Roundtrip = 1 trip in and I trip out of site). During construction, semi -tractor trailers (50 trips) will be used to haul equipment and materials to the site, along with passenger cars / trucks (150 trips)for site workers and construction management Following construction of the facility, during normal operation, the following vehicles are anticipated to access the site: Passenger Cars/Pickups (approximately 2 trips per day) and 200 fib. Tanker Trucks/Tandem Trucks (approximately 4 trips per week). 2. Describe the expected travel routes for site traffic. During construction traffic will travel primarily from Keenesburg, traveling north on WCR 49 to WCR 54 and then travel west to WCR 47. Traffic will then head south on WCR 47 approximately .20 miles to an existing access. 3. Describe the travel distribution along the routes (e.g. 50% of traffic will come from the north, 20% farm the south, 30% from the east, etc.) 90-95% will come from the South -East 4. Describe the time of day that you expect the highest traffic volumes from above. During construction, the heaviest travel times will be from 6 am to 7am, the morning start times, and 5pm to 6 pm, the end of work day. 5 Rocky Mountain Midstream, LLC Proposed Facility: Auburn Compressor Station 5. Describe where the access to the site is planned. From the intersection of WCR 54 and WCR 47, approximately .20 miles south will be an existing access which will used to access the site. 6. Drainage Design: Detention pond summarized in a drainage report is required unless the project falls under an exception to Stormwater detention requirements per code section 23-12-30 F.1. The drainage and detention pond report will follow all requirements of the Stormwater Drainage Code located under Chapter 23, Article 12 Storm Drainage Criteria. The detention pond will be designed following the above code and Urban Drainage Flood Control District (UDFCD) criteria for a Non -Urbanizing Drainage Area and will retain the 1 -hour 100 year storm with the release rate for the 1 -hour 10 -year storm events. A narrative with the preliminary drainage concept described is attached in this packet Environmental Health Questions: 1. What is the drinking water source on the property? If utilizing a drinking water well include either the well permit or well permit application that was submitted to the State -Division of Water Resources. If utilizing a public water tap include a letter from the Water District, a tap or meter number, or a copy of the water bill. Because this station is unmanned, potable water is not required and is not proposed for this facility. Following Weld County Health Department policy, temporary construction personnel will have access to bottled water. Once the construction phase of the project is complete, there will be no employees on site for regular operational. 2. What type of sewage disposal system is on the property? If utilizing an existing septic system provide the septic permit number. If there is no septic permit due to age of the existing septic system, apply for a septic permit through the Department of Public Health and Environment prior to submitting this application. If a new septic system will be installed, please state "a new septic system is proposed". Only propose portable toilets if the use is consistent with the Department of Public Health and Env►ironment's portable toilet policy. Because this station is unmanned, sewage disposal is not required and are not proposed for this facility. Following Weld County Health Department policy, portable toilets will be placed on site and cleaned regularly. This is consistent with the Department of Public Health and Environment's portable toilet policy. 6 Rocky Mountain Midstream, LLC Proposed Facility: Auburn Compressor Station 3. If storage or warehousing is proposed, what type of items will be stored? The warehousing of materials or equipment on site will be minimal. The following materials are expected for a plant of this type: 1) Lube Oil 2) Solvents 3) Grease 4) Filters 5) Gasket Material Any oils or solvents stored and handled as per the guidance provided on the Safety Data Sheets (SDS). Any liquid waste will be temporarily stored in a container approved for that waste. Any solid wastes (i.e. used oil filters) will also be temporarily stored in containers approved for the waste in question. Clean Harbors (cleanharbors.com) or a similar third -party waste recycling/disposal service will be used to recycle or dispose of all chemical/oil wastes as required by state and federal regulations. During construction less than 10 Conex boxes will be utilized to store equipment, tools etc. 4. Describe where and how storage and/or stockpile of wastes, chemicals, and/or petroleum will occur on this site. The storage storage and/or stockpile of wastes, chemicals, and/or petroleum on site will be minimal. The following materials are expected for a plant of this type: 1) Lube Oil 2) Solvents 3) Grease 4) Filters 5) Gasket Material Any oils or solvents stored and handled as per the guidance provided on the Safety Data Sheets (SDS). Any liquid waste will be temporarily stored in a container approved for that waste. Any solid wastes (Lea used oil filters) will also be temporarily stored in containers approved for the waste in question. Clean Harbors (cleanharbors.com) or a similar third -party waste recycling/disposal service will be used to recycle or dispose of all chemical/oil wastes as required by state and federal regulations. 7 ORR Rocky Mountain Midstream, LLC Proposed Facility: Auburn Compressor Station 5. If there will be fuel storage on site indicate the gallons and the secondary containment. State the number of tanks and gallons per tank. Fuel will not be stored on site in quantities greater than five (5) gallons; the facility will operate using a small portion of the inlet gas as fuel for the inlet compressors and for the combustor. 6. If there will be washing of vehicles or equipment on site indicate how the wash water will be contained. No vehicle washing is proposed for this site. 7. If there will be floor drains indicate how the fluids will be contained. Floor drains are not proposed. 8. Indicate if there will be any air emissions. (e.g. painting, oil storage, etc.) Rocky Mountain Midstream, LLC has applied for all necessary construction permits with CDPHE. 9. Provide a design and operations plan if applicable. (e.g. composting, landfills, etc.) N/A 10. Provide a nuisance management plan if applicable (e.g. dairies, feedlots, etc.) N/A 11. Additional information may be requested depending on type of land use requested. Rocky Mountain Midstream, L L C will respond with any additional information required by Weld County. Building Questions: 1. List the type, size (square footage), and number of existing and proposed structures. Show and label all existing and proposed structures on the USR drawing. Label the use of the building and the square footage. Up to three compressor buildings. The compressor buildings combined cover approximately 1 50, 000 square feet The buildings will enclose the compressor units to control noise and for protection from the elements. Up to eight compressors: Compression will be used to boost the pressure of natural gas. Slug catcher and separator: The slug catcher is a high -volume vessel intended to remove condensed liquids prior to compression. The separator will separate water from hydrocarbon liquids. A vapor recovery unit (VRU) will compress vapors off the separator to route back into the gas stream. 8 Rocky Mountain Midstream, LLC Proposed Facility: Auburn Compressor Station Metering: Metering equipment serves to measure gas flow into and out of the compressor station. Metering the gas allows for measuring volumes consumed for compressor engine fuel and calculating total volumes for operations that are reported to Discovery gas control. Three dehydration systems: The dehydration unit is designed to remove water from the natural gas stream prior to delivery into the dry natural gas pipeline. Three enclosed combustors: The combustor is an emissions control device for incinerating vapors that are a byproduct of the dehydration process. Up to two MCC Buildings: Will house all power distribution equipment as well as motor starters and SCADA system. Instrument Air Building: Will house all equipment associated with generated instrument air Slop Tanks: The tanks are designed to capture small amounts of produced water from the slug catcher, compressor suction scrubbers' other sources onsite. Volumes are expected to be small, requiring truck loadout once every 3-4 days. 2. Explain how the existing structures will be used for this USR? There are no existing structures on the site. List the proposed use(s) of each structure. Up to three compressor buildings. The compressor buildings combined cover approximately 150,000 square feet The buildings will enclose the compressor units to control noise and for protection from the elements. Up to eight compressors: compression will be used to boost the pressure of natural gas, Slug catcher and separator: The slug catcher is a high -volume vessel intended to remove condensed liquids prior to compression. The separator will separate water from hydrocarbon liquids. A vapor recovery unit (VRU will compress vapors off the separator to route back into the gas stream. Metering: Metering equipment serves to measure gas flow into and out of the compressor station. Metering the gas allows for measuring volumes consumed for compressor engine fuel and calculating total volumes for operations that are reported to Discovery gas control. Three dehydration systems: The dehydration unit is designed to remove water from the natural gas stream prior to delivery into the dry natural gas pipeline. Three enclosed combustors: The combustor is an emissions control device for incinerating vapors that are a byproduct of the dehydration process. Up to two MCC Buildings: Will house all power distribution equipment as well as motor starters and SCADA system. instrument Air Building: Will house all equipment associated with generated instrument air. 9 Rocky Mountain Midstream, LLC Proposed Facility: Auburn Compressor Station Slop Tanks: The tanks are designed to capture small amounts of produced water from the slug catcher, compressor suction scrubbers' other sources onsite. Volumes are expected to be small, requiring truck loadout once every 3-4 days. Noise: After consulting with the sound engineers, this facility was designed to meet the noise decibel levels for the area and not to exceed this level. Discussions with the sound engineers about noise suppression using berms it was revealed that berms provide no sound suppression qualities until the berms are at least 20' tall. Instead of using berms for noise suppression, impacts from the facility will be reduced by enclosing compressors within buildings provided with acoustical insulation. Compressors will utilize horizontal coolers helping to direct the noise vertically instead of horizontally along the ground. The fans on the coolers will utilize quiet tipped fan blades to further reduce noise levels. These are the same types of blades some hospitals use to help mitigate noise levels. Communication Antennae: Rocky Mountain Midstream, LLC proposes to construct a radio communications tower"up to 60 feet" in height at the proposed Auburn Compressor Site. Rocky Mountain Midstream, LLC designs and constructs such towers at each of its facilities to allow for remote monitoring and control of the facilities. It is imperative that the communications tower be located in the immediate vicinity of the site to allow for the transmission of a reliable signal. A secure location within the site is critical because of the life -safety functions associated with the station's control and emergency shutdown notification features. Due to safety concerns, Rocky Mountain Midstream, LLC does not co -locate its transmitters on third -party towers. Because the transmitters are utilized to remotely control the compression and processing of natural gas and other hazardous materials, Rocky Mountain Midstream, LLC requires that only Rocky Mountain Midstream, LLC personnel be permitted access to its towers and transmitters to prevent intentional or accidental disruption of communication services. If a third -party user requested to co -locate on this proposed tower, they might be granted permission on a case -by -case basis, as this is a safety and security concern. If granted they would have to comply with Rocky Mountain Midstream, LLC's safety, security and structural installation requirements. The proposed communications tower will not constitute a hazard to aircraft due to its location. - The proposed communications tower will be located within the Property (Parcel No. #096126000010) and the entire fall zone for the tower will be located within the proposed Rocky Mountain Midstream, Auburn Compressor Station property. - The proposed communications tower will be as shod as practicable to allow for sufficient signal transmission and will be constructed out of non -reflective materials. - Due to its location, as well as the fact that only Rocky Mountain Midstream, LLC transmitters will be located on the tower, the proposed tower should not adversely affect human health. - The proposed tower will be no taller than the minimum height required for adequate signal transmission between Rocky Mountain Midstream, LLC's radio communication towers located in the vicinity. Rocky Mountain Midstream, LLC will ensure that the proposed tower complies will all applicable federal and state regulations. From: Janice Kinnin To: Chris Gathman Cc: Scott Elery - Williams Subject: Auburn Compressor Station - USR18-0129 - Additional information Date: Monday, February 25, 2019 3:59:50 PM Caution: This email originated from outside of Weld County Government. Do not click links or open attachments unless you recognize the sender and know the content is safe. Chris, Please find below additional information which you requested regarding the Auburn Compressor Station, USR18-0129. Lighting: This is an unmanned facility therefore minimal lighting is utilized following recommendations of the International Dark -Sky Association. All lights will be on -demand with the exception of a light illuminating the entrance doors to the PDC building and those will be downcast and shielded. To help minimize light pollution, all luminaries shall be Dark -Sky compliant, downcast and shielded at a 45° angle, provided with a cutoff shield, visor or shroud so that beams or rays of light will not shine directly onto adjacent properties. Sources of light shall not cause a nuisance nor interfere with the use on the adjacent properties. Neither the direct, nor reflected light from any light source shall create a traffic hazard to operators of motor vehicles on public or private streets. No colored lights shall be used which may be confused with, or construed as, traffic control devices. Noise: After consulting with the sound engineers, this facility was designed to meet the noise decibel levels for the area and not to exceed this level. Discussions with the sound engineers about noise suppression using berms it was revealed that berms provide no sound suppression qualities until the berms are at least 20' tall. Instead of using berms for noise suppression, impacts from the facility will be reduced by enclosing compressors within buildings provided with acoustical insulation. Compressors will utilize horizontal coolers helping to direct the noise vertically instead of horizontally along the ground. The fans on the coolers will utilize quiet tipped fan blades to further reduce noise levels. These are the same types of blades some hospitals use to help mitigate noise levels. An ambient sound level survey was conducted as a base line for the compressor site and is included with this submittal. A Noise Mitigation Plan is included to show what steps Rocky Mountain Midstream will perform in the event the site is out of compliance with surrounding noise compliance levels. After the site has been built and fully operational additional testing will be performed to verify compliance. Communications Plan: Rocky Mountain Midstream reaches out to all of the adjoining property owners to give them the contact information mentioned in the Communications Plan included with this submittal. Any one not contacted directly by RMM can contact RMM directly and be added to the contact list to receive the information as described in the Communications Plan. Facility sign details are included on the site plan, which includes contact information for the community at -large. Communication Antennae: Rocky Mountain Midstream, LLC proposes to construct a radio communications tower "up to 60 feet" in height at the proposed Latham Compressor Site. Rocky Mountain Midstream, LLC designs and constructs such towers at each of its facilities to allow for remote monitoring and control of the facilities. It is imperative that the communications tower be located in the immediate vicinity of the site to allow for the transmission of a reliable signal. A secure location within the site is critical because of the life -safety functions associated with the station's control and emergency shutdown notification features. Due to safety concerns, Rocky Mountain Midstream, LLC does not co -locate its transmitters on third - party towers. Because the transmitters are utilized to remotely control the compression and processing of natural gas and other hazardous materials, Rocky Mountain Midstream, LLC requires that only Rocky Mountain Midstream, LLC personnel be permitted access to its towers and transmitters to prevent intentional or accidental disruption of communication services. If a third - party user requested to co -locate on this proposed tower, they might be granted permission on a case -by -case basis, as this is a safety and security concern. If granted they would have to comply with Rocky Mountain Midstream, LLC's safety, security, and structural installation requirements. • The proposed communications tower will not constitute a hazard to aircraft due to its location. • The proposed communications tower will be located within the Property (Parcel No. # 096126000010) and the entire fall zone for the tower will be located within the proposed Rocky Mountain Midstream, LLC Auburn Compressor Station property. The proposed communications tower will be as short as practicable to allow for sufficient signal transmission and will be constructed out of non -reflective materials. • Due to its location, as well as the fact that only Rocky Mountain Midstream, LLC transmitters will be located on the tower, the proposed tower should not adversely affect human health. • The proposed tower will be no taller than the minimum height required for adequate signal transmission between Rocky Mountain Midstream, LLC's radio communication towers located in the vicinity. • Rocky Mountain Midstream, LLC will ensure that the proposed tower complies will all applicable federal and state regulations. Decommissioning Plan: If the compressor station is deemed obsolete, the station closure will follow all Federal, State and Local (County) regulations. Please reference the Decommissioning Plan provided with the original USR submittal. Financial Assurance: Rocky Mountain Midstream, LLC is a joint venture owned and funded by its two owning members, an affiliate of KKR Global Infrastructure Investors III L.P. and an affiliate of Williams Companies. Williams, as an investment grade Fortune 500 company and KKR both have significant borrowing capacity and are committed to meet the funding obligations of Rocky Mountain Midstream, LLC. Please let me know if you have any questions. Thank you and regards, Janice Kinnin Permitting Agent Rocky Mountain Midstream LLC 303-260-8846 Samuel Engineering We Provide Solutions 8450 E. Crescent Parkway, Suite 200 Phone: 303-714-4840 Greenwood Village, Colorado 80111 Fax: 303-714-4800 FINAL DRAINAGE REPORT CE -201 PREPARED FOR: Rocky Mountain Midstream, LLC Auburn Compressor Station Project Number 18294 The Auburn Compressor Station project site is located in part of the northeast quarter of Section 26, Township 5 North, Range 65 West, 6th Principal Meridian, Weld County, Colorado PREPARED BY: SAMUEL ENGINEERING, INC. 8450 EAST CRESCENT PARKWAY, SUITE 200 GREENWOOD VILLAGE, CO 80111 ISSUED FOR USR PERMIT Revision A Engineering ♦ Project Controls ♦ Estimating ♦ Construction Management Samuel Engineering We Provide Solutions 8450 E. Crescent Parkway, suite 200 Phone: 303-714-4840 Greenwood Village, Colorado 80111 Fax: 303-714-4800 Originator/Lead Engineer: Project Engineer Approval: Project Manager Approval: Client Approval: RECORD OF REVISIONS Michael Cloud Brandon Primeaux Date: Date: Date: Date: 11/20/18 11/20/18 Rev. No. By Revisions Approval Date A M. Cloud Issued for Permit WIC 11/20/18 Current Working Revision Rev. A Date 10/19/18 Engineering ♦ Project Controls ♦ Estimating ♦ Construction Management Samuel Engineering We Provide Soknions 8450 E. Crescent Parkway, Suite 200 Phone: 303-714-4840 Greenwood Villager Colorado 80111 Fax: 303-714-4800 CERTIFICATION OF COMPLIANCE ENGINEERING DESIGNED TO WELD COUNTY CODE STANDARDS AND CRITERIA ROCKY MOUNTAIN MIDSTREAM, LLC a AUBURN COMPRESSOR STATION I, Michael Cloud, Consultant Engineer for Rocky Mountain Midstream, LLC (aApplicant)), understand and acknowledge that Applicant is seeking to develop the property described in the following Drainage Report. I have designed or reviewed the design ("Design") 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 with the exception of variance(s) described below. This certification is not a guarantee or warranty either expressed or implied. (Engineer's Stamp) Engineer of Record Signature VARIANCE REQUEST 1) Describe the Weld County Code criteria of which a variance is being requested. 2) Describe why it is not possible to meet the Weld County Code. 3) Describe the proposed alternative with engineering rational which supports the intent of the Weld County Code. None I understand and agree that the intention of the Code is to reduce impacts of development on neighboring downstream properties and the public. I understard if this variance is approved it is not precedent setting and is based on site specific constraints. Planning. Director Approval indicated when signed by director or appointee: Planning Director Name Signature Date of Approval Table of Contents S:\Projects\18294 4uburn.Compressor' Engineering\Civ.il\Reports\Drain.age .study\Auburn CS Final Dra nage.docx Samuel Engineering jyr p, r J►r S,_ Li i 11t Samuel Engineering We Provide Solutions 8450 E. Crescent Parkway, Suite 200 Phone: 303-714-4840 Greenwood Village, Colorado 80111 Fax: 303-714-4800 1.0 DESCRIPTION OF P ROJ EcT,,,,,,.. 2.0 i ttemenionitiol.wevessensou#Ades,4 enseanniesessouseit illnnee•nume*.feh1• Tin c CALCULA. BO IIIIIIIMGOODOODSMOOMODOIDODIDIMMOISINIBIBIIIIII De 1 1 2.1. HYDROLOGY .i.........4.4...444 ....4.....4......4.......0, ..i...4. .... 1 2.1.1 Site Soils 1 2.1.2 Design Storm.4.l.,.........,.,.4 04000440044440004 x#44.4944.4.4f44.4N444..f4.44{14444400044444..74.{!4{l4444400044i444.N440044x#444 2 2.1.3 Pre -Development and Overall Post-DevelopmentSiteImperviousness 11004.400444400011406 4444 44444 2 2.1.4 Peak Fiowrate Calculations i a .4..2 2.2 DETENTION POND DESIGN 2.3 050464, 4444 4 4444444 e• ******* 5464 3 2.2.1 Pond Volume ■ .e Calculations 44..644446.94.6..44...4444.44444 .44444444..4444.444...44444449....44..444.44 3444. i. 4.444 444 2.2.2 Pond Stage -Storage for Discharge Calculations .....944.44 4.444444944444444..444.444444444444444.4944.44444444944 4 2.2.3 Pond Outlet Structure Design 4 HYDRAULICS..444.lei it 44444.4.....4...4.4...... tit* ..4.....4.....444*Ott 44....44444..6444...4444..f.4.4!Of .III ..4.4 2.3.1. Culverts 04 4004 4000 4.444.44444444 00044400 444444 40 4 49.■ 5 2.3.2 Ditches .545.4.44...4444444444.45444.444..444444444...44...94...444..444 4 44 44..544..444.4444444444.4.45.4.444..4.444444 4444444...5456 2.4 GRADING /AND DRAINAGE DESIGN 5..4.........0606666000060 646560404 606066600000f ....44......4....64644..666. 6 3.0 POND MAINTENANCE NTENANCE REQUIRE II IE T5,,,,,,,,,,,,,,,,,,,,,,,,m,,,,,,.,.,,,,,,,,.,,,,.,,m,,,,,,n,.,,,,,,, 6 3.1. ROUTINE MAINTENANCE 4 ..............4............... 341.1 Inspections ..4.4.49. 0044400044040044404440004440 00040000444040 3.1.2 Sediment and Debris Management.... 6666.i ..ISMSi ..4....4.......6 3.1.3 Vegetation Management 0444000 444 00044.000444000444000444044000444000440004440044400044444545..44444.44..4545...45...4444.. 3.2 NON ROUTINE MAINTENANCE .......................0001........... 3•2•1 Genera l 0 4 4 0 000440004440004440044400044400044000444000444 004400044400444000440004440044400044400444000440004441044400044 4 4 4 4 4 4 0 0 0 0 4 4 4 0 0 0 6 3.2.2 Facility Repairs 4.0 6666.., .... J APPENDIXA: vow?' o w 11 I/kP 45400004444444.4.45444444444.444444444 044000444004440004440044400044000444004 dp 40004400044400444000444 40004400044400044 1 APPENDIX B: N RCS WEB SOIL SURVEY .444444444444444444444.4444444444444444444444444.444444444444444.4..4.4.444444444444444.4444..4444.4444 1 APPENDIX C: NOAA RAINFALL DATA 4..4 ................4 66664...4.4.....4......0-1 APPENDIX D: AREA WEIGHTED IMPERVIOUSNESS VALUES 4.4544000440004440•004110•444•000411•414000 D-1 APPENDIX E: HYDROLOGIC CALCULATIONS E-1 APPENDIX F: DETENTION BASIN VOLUME BY THE MODIFIED FAA METHOD F-1 APPENDIX G: DETENTION BASIN STAGE -STORAGE 4.44.4.45454444444444 G-1 APPENDIX H: DETENTION BASIN OUTLET STRUCTURE DESIGN.......ISSN 4...4SS..............4..............4.4... H-1 APPENDIX I: CULVERT DESIGN I-1 APPENDIX J: CONSTRUCTION DRAWINGS ..444...444444494.4.4544.44444444.44400044.4.4544.444000440004444.444.4.444..444440444045454 04044 I-1 S:\Projects\182 4_,Auburn_repressor'Engineering\CiviI\Reports\Drainage Study\Auburn CS Final Drainagetdocx amuel Engineering fi' u Pn wrth? 5orrfrcrris ROCKY MOUNTAIN MIDSTREAM, LL AUBURN COMPRESSOR STATION PROJECT NUMBER: 18294 CE -201, REV. A FINAL DRAINAGE REPORT PAGE 1 of 7 1.0 DESCRIPTION OF PROJECT The subject property is a 10 -acre parcel leased by Rocky Mountain Midstream, LLC for the installation of a gas compressor station. The compressor station, access roads and detention pond will disturb approximately 5.5 acres of the 10 -acre site. The project site is located on a leased tract of land which consists mostly of crop land with existing pipeline right-of-ways abutting the south edge of the lease and existing irrigation ditch features on the west and east edges of the lease. Topographic relief over the leased property ranges from 4646.0' on the west side of the parcel to 4644.5' on the east side and is characterized by very slightly sloping land with grades that typically range from 0.0% to 0.3%. The subject property is not part of the Weld County Master Drainage Plan. There are no open channels, lakes, streams or irrigation ditches in the proposed development. The subject property is not located in a floodplain. The surrounding area development consists of grazing land to the north and west and crop land to the south and east. See Appendix A for project location and vicinity map. 210 CALCULATIONS 2.1 HYDROLOGY The project site drainage must be designed to meet the requirements of Weld County Code Article XII, It has been determined that the runoff from this site is non -urbanizing and therefore the increased runoff volume must be detained in an extended detention basin and the increase peak flows attenuated to the "historic" 10 -year peak flow rate for the basin area contributing to the pond. Historic flow is defined as the existing area with an assumed imperviousness of 2.0%. The detention basin must be sized appropriately to store the runoff volume from the 100 -year 1 -hour storm. Urban Drainage and Flood Control District's (UDFCD) design manual and worksheets have been used to perform drainage calculations for this study. 2.1.1 Site Soils The characteristics of the soils on the site contribute to the amount of storm runoff. Regional soil information is obtained from the National Resource Conservation Service (NRCS) Web Soil Survey. The majority of the site soils are Aquolls and Aquents Gravelly Substratum with slopes of 0% to 1% classified as Hydraulic Soil Group (HSG) D. An undeveloped offsite basin witch drains thorough the lease has soils characterized as Dacano Clay Loam with slopes of 0% to 1% classified as HSG C. The existing regional soil information obtained from NRCS is used for all runoff calculations in undeveloped areas. See Appendix B for the regional NRCS Web Soil Survey of this site. S:\Projects\18294 Auburn, repressor'Engineering\Civil\Reports\Drainage Study\Auburn Cs Final Drainagetdocx alrnuel Engineering fi' u Peawwrth? 5errrflrcrris ROCKY MOUNTAIN MIDSTREAM, LL AUBURN COMPRESSOR STATION PROJECT NUMBER: 18294 CE -201, REV. A FINAL DRAINAGE REPORT PAGE 2 of 7 2.1.2 Design Storm The design storms considered for this site are the 10 -year 1 -hour and the 100 -year 1 -hour events. The rational method is used for determining peak flows and the FAA method is used for determining the runoff volume for the design storm. Both of these methods require the design storm rainfall depth as an input to perform the calculations. The rainfall depth for each design storm a re : 10 -year 1 -hour = 1.41 in 100 -year 1 -hour = 2.71 in Refer to Appendix C for NOAA Atlas 14, Volume 8, Version 2 Rainfall Data. 2.1.3 Pre -Development and Overall Post -Development Site Imperviousness The existing site and surrounding areas that contribute storm runoff consist of undeveloped pasture land with no pavement or structures present so the pre -developed imperviousness is assumed to be the historical value of 2.0%. Final site development will include gas process equipment and structures such as compressor skids, storage tanks, compressors, etc. with access roads and gravel pads as welt as the detention pond surface. The major drainage basin also includes several acres of surrounding u ndeveloped areas that will be diverted around the site. The developed site contributing to the detention pond will have a composite imperviousness of 54.90%. The developed pad is constructed completely in fill to allow for construction of a detention pond. The facility road e mbankments will act as diversions to redirect the offsite flows from the up -gradient surrounding undeveloped areas to rejoin historic flow patterns. See Appendix D for composite imperviousness calculations. 2.1.4 Peak Flowrate Calculations Peak flowrates at design points for each drainage basin are calculated following the UDFCD design manual and worksheets. Inputs for rational method calculations are determined from construction drawings ACS -CE -61O, Pre -Developed Drainage Basin Map and ACS -CE -G11, Developed Drainage Basin Map. Refer to Appendix J for construction drawings. The rational method calculations are developed using Urban Drainage and Flood Control District Worksheet fUD-Rational v2.00.xls". The proposed site is part of an existing drainage basin that currently sheet flows across very flat terrain until it discharges through a culvert beneath an existing gas facility access road. Offsite flows from the north and west are currently intercepted by Union Ditch and another irrigation trench on the property, so the offsite flows onto the project site are minimized. The pre- developed major drainage basin (EX -1) has a contributing area of 20.60 acres. Basin EX -1 is u ndeveloped and has a 10 -year runoff coefficient C10 = 0.15 and a 100 -year runoff coefficient S:\Projects\18294 Auburnacompressor\Engineering\Civil\Reports\Drainage Study\Auburn CS Final Drainage.docx Samuel Engineering fi'1fr, Praiwrrk Sorr:Ercrris ROCKY MOUNTAIN MIDSTREAM, LL AUBURN COMPRESSOR STATION PROJECT NUMBER: 18294 CE -201, REV. A FINAL DRAINAGE REPORT PAGE 3 of 7 C100 = 0.49. The resulting existing peak flows at Design Point EX -1 are Ow = 4.24 cfs and Q100 = 27.33 cfs. (See Appendix E, Page E-2) The developed equipment pad is required to drain to a detention pond, and as such, the 10 -year 1 -hour "Historic" peak flow rate (contributing area to pond with 2.0% imperviousness value) must be determined as this is the maximum allowable discharge rate from the detention pond. The basin draining to the detention pond (PR -1) has a contributing area of 4.33 acres. The historic Basin (H)PR-1 has a 10 -year runoff coefficient C10= 0.15 resulting in a peak flowrate at Design Point 1 of iva = 1.43 cfs. This is the maximum allowable discharge rate from the detention pond. (See Appendix E, Page E-2). The developed Basin PR -1 contributing to the detention pond has a 10 -year runoff coefficient C10 = 0.54 and a 100 -year runoff coefficient C100= 0.71. The resulting peak flows at Design Point 1 are Cho =5.74 cfs and Q100= 14.59 cfs. The resulting flows at Design Point 1 are the design flows that runoff into the detention pond. The 100 -year developed peak flow will be used as the design flow for the pond overflow weir. (See Appendix E, Page E-2) The facility pad is graded to split the pad runoff evenly to one of two culverts (Culvert 1 and Culvert 2) which convey the flows into the pond. The tributary areas to each culvert are sub - basins of Basin PR -1, Basin PR -1 (CULVERT 1) and Basin PR -1 (CULVERT 2) respectively. Since these basins do not include the pond surface area, the composite imperviousness is 40.0%. Culvert 1 has a tributary area of 1.11 acres which results in a 10 -year runoff coefficient C10 = 0.43 and a 100 -year runoff coefficient C100= 0.65 and peak flows of Q10 = 1.20 cfs and Q100= 3.49 cfs. Culvert 2 has a tributary area of 1.81 acres which results in a 10 -year runoff coefficient C10 0.43 and a 100 -year runoff coefficient 0100 0.65 and peak flows of Qi0= 1.95 cfs and Q100= 5.69 cfs. (See Appendix E, Page E-2) The undeveloped Basin PR -2 contributing to cross -culvert (Culvert 3) required for the new access road has a 10 -year runoff coefficient C10 = 0.15 and a 100 -year runoff coefficient C100 0.49. The resulting existing peak flows at Design Point 2 are' n = 1.69 cfs and Clioo = 10.89 cfs. The resulting flows at Design Point 3 are the design flows for Culvert 3 which conveys the flow to rejoin existing flow patterns. (See Appendix E, Page E-2) 2.2 DETENTION POND DESIGN 2.2.1 Pond Volume Calculations The detention pond for this site is required to have capacity to store the runoff volume from the 100-yr 1 -hour storm and release at the "historic" 10 -year peak flowrate. The detention pond is designed following the recommendations of the UDFCD Urban Strom Drainage Criteria Manual (Volume 3) with ability to collect the Water Quality Control Volume (WQCV) and discharge within 40 hours. The WOCV is determined empirically based on the contributing basin area and the imperviousness. The required WCICV for the detention pond is 3,460 ft3. (See Appendix F, Page F-2) S:\Projects\182 4fAuburn_repressor'Engineering\Civil\Reports\Drainage Study\Auburn CS Final Drainage.docx arnueI Engineering fi' u Peawwrth? 5errrflrcrris ROCKY MOUNTAIN MIDSTREAM, LL AUBURN COMPRESSOR STATION PROJECT NUMBER: 18294 CE -201, REV. A FINAL DRAINAGE REPORT PAGE 4 of 7 The required storage volumes for the design storms are computed using the FAA. method. This method allows for a simplistic calculation of requiredstorage volume while restricting the pond outflow to the required allowable peak flowrate of Q(H)10 = 1.43 cfs. These calculations are developed using Urban Drainage and Flood Control District Worksheet "UD-Detention v2.35.xls". The required storage volume for the 10 -year design storm is 4,871 ft3 and the required storage volume for the 100 -year design storm is 26,978 ft3. (See Appendix F, Page F-3) 2.2.2 Pond Stage -Storage for Discharge Calculations Following the determination of the required storage volumes for the detention pond, the pond is designed to allow for the storage of the runoff. The proposed detention pond required volume is achieved by utilizing an existing natural depression on the site. (See Appendix hal for construction drawings) The stage -storage relationship is determined by calculating incremental contour areas and using the average end area method for computing volume. The key stages for storage volumes are identified to allow for discharge calculations for the pond outlet structure. (See Appendix G for pond stage -storage information) 2.2.3 Pond Outlet Structure Design The detention pond will discharge through a flow control orifice plate welded to a corrugated metal pipe spillway at the allowable "historic" peak flowrate. The outflow from the pond is controlled by orifices which are designed using steady state flow computations that account for the lowering stage of the pond as it drains. The stage at each key storage volume is input as the headwater depth on the weir to determine the required size of the weir. The first stage of flow control on the outlet structure is the WOCV orifice. The WQCV is intended to have a 40 -hour residence time in the detention pond, therefore the bottom of the flow control orifice plate is adjusted until the calculated drain -down time for the full We CV is approximately 40 -hours. With a maximum WOO/ headwater elevation of 4644.74 ft, the bottom of the orifice plate will be placed at an elevation of 4644.55 ft, 0.625 inches (5/8") above the invert of the outlet pipe. (See Appendix H, Page H-2) It is intended that the runoff volumes above the WC,CV up to the 100 -year design storm outflow will be controlled by a rectangular orifice on the pond outlet pipe. With a maximum 100 -year headwater elevation of 4645.78 ft, the rectangular orifice will be 8" wide and 6" tall with a centroid elevation of 4644.99 ft to maintain a maximum flow rate of 1.43 cfs. The 100-yr volume drains in 6.44 hours and the pond will completely empty in 46.03 hours. (See Appendix H, Page H-4) The pond is equipped with an emergency overflow spillway to safely pass storm water flow in excess of the design storm volume. This emergency overflow spillway is designed for the developed 100 -year peak runoff rate of goo = 14.59 cfs while maintaining a flow depth of less than 6" over the spillway elevation. The overflow weir is designed with side slopes at 4H:1V cut S:\Projects\182 4fAuburn_repressor'Engineering\Civil\Reports\Drainage Study\Auburn CS Final Drainagetdocx a muel Engineering fi' u Peawwrth? Sorr:Ercrris ROCKY MOUNTAIN MIDSTREAM, LL AUBURN COMPRESSOR STATION PROJECT NUMBER: 18294 CE -201„ REV. A FINAL DRAINAGE REPORT PAGE 5of7 to the top of the pond embankment. With a spillway width of 20.00 ft, the flow depth over the weir is 4.33 inches. (See Appendix H, H-6) The flow velocity out of the pond discharge pipe should be designed to be below 3.00 ft/s to reduce potential of scour and sediment transportation from the outfall. The flow rate is controlled by the 100 -year orifice plate and the velocity is controlled by flattening the pipe slope. The 12" CMP outfall pipe has a slope of 0.05% (matching existing grade) which yields a peak velocity of 1.82 furs at the maximum storage volume headwater elevation. Riprap outlet protection will be added to the o utfa l l as a best management practice, but since the velocity is less than 3.00 ft/s, no additional scour protection is required. (See Appendix H, Page H-7) 2.3 HYDRAULICS Due to the type of plant being constructed the site grading will have minimum slopes with the majority of onsite runoff being conveyed by sheet flow and using culverts to pass flow beneath plant roads. Shallow swales will be utilized on the facility pad direct flow to the conveyance facilities. The swales will have shallow slopes and low velocity flows. 2.3.1 Culverts Per Weld County Code Article XII, Section 23-12-70 A, major drainage systems must be able to convey the fully developed flow from a watershed for the 1 -hour, 100 -year event without significant damage to the system. In addition, the Weld County Engineering and Construction Guidelines dictate that culverts must be sized so that road overtopping does not result in more than 6 -inches of water in the 10 -year event and 18 -inches of water in the 100 -year event. Although the local requirements allow for overtopping of the road during the design storms, Culvert 1 and Culvert 2 will be required to pass the 100 -year storm in order to route the entire storm runoff volume to the detention pond. The site culvert sizes are verified using Bentley CulvertMaster software which computes the upstream headwater elevation to check for overtopping at the design flow. Culvert 1 will be a double 12" CMP Culvert with flared -end sections and will pass the 100 -year developed flow of 3.49 cfs, resulting in an upstream headwater elevation which does not overtop the facility pad road. Culvert 1 is properly sized to convey the design storms. (See Appendix I, Pagel -2) Culvert 2 will be a double 12" CMP Culvert with flared -end sections and will pass the 100 -year developed flow of 5.69 cfs, resulting in an upstream headwater elevation which does not overtop the facility pad road. Culvert 2 is properly sized to convey the design storms. (See Appendix I, Pagel -3) Culvert 3 will be a double 12" CMP Culvert with flared -end sections. This culvert conveys flows from an undeveloped drainage basin, and therefore the road can overtop in the major storm event. Culvert 3 passes the 10 -year storm, but the 100 -year storm will build upstream of the culvert. Based on the existing topography, the surplus stormwater will spread out rather than overtop the road, eventually draining completely following the storm. S:\Projects\182 4fAuburn_repressor'Engineering\Civil\Reports\Drainage Study\Auburn CS Final Drainagetdocx a muel Engineering fi' u Peawwrth? 5errrflrcrris ROCKY MOUNTAIN MIDSTREAM, LL AUBURN COMPRESSOR STATION PROJECT NUMBER: 18294 CE -201, REV. A FINAL DRAINAGE REPORT PAGE 6 of 7 2.3.2 Ditches Roadside conveyance ditches are utilized in cut areas to convey offsite flows around the developed site and the detention pond. These ditches will receive minimal inflows and are mainly utilized to redirect minor flows as required. 2.4 GRADING AND DRAINAGE DESIGN The results of this drainage study have been incorporated into the project construction drawings. See Appendix J for Grading and Drainage Plans and Details. 3.0 POND MAINTENANCE REQUIREMENTS The structural and functional integrity of the detention basin shall be maintained at all times by removing and preventing drainage interference, obstructions, blockages, or other adverse effects into, through, or out of the system. 3.1 ROUTINE MAINTENANCE 3.1.1 Inspections Routine inspections shall be performed a minimum of 2 times annually and after major rainfall events. 3.1.2 Sediment and Debris Management Periodic silt removal shall occur when standing water conditions occur or the pond's storage volume is reduced by more than 10%. Silt shall be removed and the pond/basin returned to original lines and grades shown on the approved engineering plans (See Appendix J), In addition, corrective measures are required any time a basin does not drain completely within 72 hours of cessation of inflow. Accumulated litter, sediment, and debris shall be removed every 6 months or as necessary to maintain proper operation of the basin. Disposal shall be in accordance with federal, state and local regulations. 3.1.3 Vegetation Management Detention facilities shall be mowed monthly between the months of April and October or anytime vegetation exceeds 12 -inches in height. 3.2 NON -ROUTINE MAINTENANCE 3.2.1 General The detention basin shall be kept free of excess trash and debris, poisonous and noxious weeds, contaminants and pollution, rodent holes, standing water harboring insects, and unwanted S:\Projects\18294 Auburn, repressor'Engineering\Civil\Reports\Drainage Study\Auburn CS Final Drainagetdocx a muel Engineering fi' u Peawwrth? 5errrflrcrris ROCKY MOUNTAIN MIDSTREAM, LLC AUBURN COMPRESSOR STATION PROJECT NUMBER: 18294 CE -2011 REV. A FINAL DRAINAGE REPORT PAGE 7 of 7 vegetation growth (i.e. trees). These potential defects shall be repaired or mitigated to the original state within 30 days from the date of observation. 3.2.2 Facility Repairs If upon routine inspection any signs of damage to the outlet structure, outlet pipe, emergency spillway, or pond embankment are observed, the feature shall be repaired to the original state within 30 days from the date of observation. 4.0 CONCLUSION 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. This drainage study has been designed toconvey developed flows through an extended detention basin 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 p redevelops ent drainage patterns. With a properly constructed and maintained pond along with the proposed erosioncontrol measures this development will not adversely impact the existing drainage or existing downstream developments. S:\Projects\18294 Auburn, repressor'Engineering\Civil\Reports\Drainage Study\Auburn CS Final Drainagetdocx amuel Engineering fi' u Peawwrth? 5errrflrcrris Appendix A: Vicinity Map SECTION 22 SECTION 27 SECTION 34 1 SECTION 23 r� SECTION 26 T05N R65W 6TH PM SECTION 35 VICINITY MAP SCALE 1" = 3000' I SECTION 24 SECTION 25 SECTION 36 Appendix B: NRCS Web Soil Survey 40° 22' 34" N 40° 22' Si' N 104° 37' 59" 1+11 531200 531300 531400 531500 531800 531700 531800 531900 532000 532100 532200 1040 37' 59" 'A 531200 N 0 50 100 Feet 0 1 000 1 t Map projection: Web Mercator Corner coordinates: W0S84 Edge tics: UTM Zone 13N WGS84 531300 531400 I 531500 I Hydrologic Soil Group Weld County, Colorado, Southern Part (AUBURN COMPRESSOR STATION) Map Scale: 1:5,400 if printed on A landscape (11" x 8.5") shed. Meters 200 300 531600 531700 531800 531900 532000 532100 532200 c17300 res 104° 37 9" w 40° 22' 34" N 4C° 22' 9" N USDA Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 11/1912018 Page 1 of 4 Hydrologic Soil Group Weld County, Colorado, Southern Part (AUBURN COMPRESSOR STATION) MAP LEGEND Area of Interest (ACM) Area of Interest (ACSl) Soils Soil Rating Polygons n A AID B B/D C CID D Not rated or not available Soil Rating Lines 5 A r AID B B/D ,.� C/D r 0 D di Not rated or not available Soil Rating Points 0 0 0 A AID B BID 0 0 0 CRD D Not rated or not available Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography MAP INFORMATION The soil surveys that comprise your A0I 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 -MRCS certified data as of the version date(s) listed below. Soil Survey Area: Weld County, Colorado, Southern Part Survey Area Data: Version 17, Sep 10, 2018 Soil map units are labeled (as space allows) for map scales 1:59,000 or larger. Date(s) aerial images were photographed: Jul 17, 2015 Oct 2, 2017 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 11/19/2018 Page 2of4 Hydrologic Soil Group —Weld County, Colorado, Southern Part AUBURN COMPRESSOR STATION Hydrologic Soil Group Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 1 Altvan loam, percent slopes 0 to 1 B 24.5 16.4% 3 Aquolls and Aquents, gravelly substratum O 72.7 48.6% 8 Ascalon loam, percent slopes 0 to 1 B 4.2 2.8% 21 Dacono 1 clay loam, percent slopes 0 to C 26.1 17.4% 41 Nunn clay loam, percent slopes 0 to 1 C 22.1 14.8% Totals for Area of Interest 149.5 100.0% USDA Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 11/19/2018 Page 3 of 4 B-4 Hydrologic Soil Group —Weld County, Colorado, Southern Part AUBURN COMPRESSOR STATION 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 G. 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 (AID, 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 Conservation Service Web Soil Survey National Cooperative Soil Survey 11/19/2018 Page 4 of 4 B-5 Appendix C: N •AA Rainfall Data Precipitation Frequency Data Server https:.i`/h c.n ,noaa.govlhdsc/pfds1pf :s _ rintpage.htrnlfat=40.3723 &.... NOAA Atlas 14, Volume 8, Version 2 Location name: Greeley, Colorado, USA* Latitude: 40.3723°, Longitude: -104.6274° Elevation: 4644.14 ft** * source: ESRI Maps ** source: USGS POINT PRECIPITATION FREQUENCY ESTIMATES Santa Perca, Deborah Martin, Sandra Pavlovic, bhani Roy, Michael St. Laurent, Carl Trypaluk, Dale Unruh, Michael Yekta, Geoffery Bonnie NOAA, National Weather Service, Silver Spring, Maryland PF tabular 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) 1 0.243 (0.201-0.298) 2 0.294 (0.242-0.361) 10 -min 0.356 (0.294-0.436) 0.431 (0.355-0.528) 15 -min 0.434 (0.358-0.532) 0.525 (0.433-0.644) 30 -min 0.5.3 (0.481-0.714) 0.704 (0.580-0.863) 10—m 60 -min 0.725 (0.598.0.888) 0.863 (0.711-1.06) 2 -hr 3 -hr 6 -hr 12 -hr 24-hrJ 0.867 (0.720-1.05) 0.950 (0.792-1.15) 1.09 (0.915-1.31) 1.27 (1.07-1.51) 1.51 (1.294.78) 1.02 (0.847-1.24) 1.11 (0.922-1.34) 1.28 (1.08-1.54) 1.51 (1.28-1.80) 1.78 (1.51-2.10) 2 -day 1.74 (1.49-2.04) 3 -day 4 -day Zaday 90 -day 1.91 (1.64-2.22) 2.03 (116-2.36) 2.31 (2.01-2.66) 2.05 (1.76-2.40) 2.22 (1.91-2.59) 2.36 (2.03-2.73) 2.69 (2.34-3.10) 2.55 (2.22-2.92) 2.98 (2.60-3.42) 20 -day 3.26 (2.87-3.70) 1 3.77 (3.31.4.29) 30 -day 3.83 (3.39-4.33) 4.41 (3.89-4.99) 45 -day 60 -day 4.52 (4.01-5.09) 5.20 (4.61-5.85) 5.08 (4.53-5.70) 5.86 (5.21-6.58) 5 0.391 (0.321-0.481) 0.572 (0.469-0.704) 0.698 (0.573-0.859) 0.935 (0.767-1.15) 1.14 (0.933-1.40) 1.34 (1.114.64) 1.44 (1.20-1.75) 1.67 (1.40-2.02) 1.97 (1.66-2.35) 2.27 (1.92-2.69) 2.61 (2.22-3.06) 2.78 (2.38-3.25) 2.92 (2.51-3.40) 3.34 (2.89-3.86) 3.69 (3.20-4.25) 4.59 (4.02-5.24) 5.32 ;4.68-6.04) 6.26 (5.53-7.08) 7.08 (6.27-7.97) 10 25 0.484 (0.394-0.599) 0.709 (0.577-0.877) 0.864 (0.704-1.07) 0.632 (0.501-0.838) 0.925 (0.733-123) 1.13 (0.894-1.50) r 50 0.760 (0.582-1.02) 1.11 (0.852-1.49) 1.36 (1.04-1.82) 1.16 1.52 1.83 (0.944-1.44) (1.20-2.01) (1.40-2.45) 1.41 1.15-1.75) 1.67 (1.37-2.04) 1.79 (1.47-2.19) 2.07 (1.72-2.51) 2.40 (2.01-2.88) 2.72 (2.29-3.24) 3.10 (2.63-3.66) 1.86 (1.48-2.49) 2.21 (1.7a-z.sa) 2.38 (1.93-3.16) 2.72 (2.21-3.55) 3.08 (2.50-3.94) 3.43 (2.80-4.32) 2.26 (1.74-3.05) 2.70 (2.09-3.61) 2.92 (227-3.89) 3.30 (2.58-4.34) 3.66 (2.88-4.74) 4.02 O.19.5.14) 3.28 (2.79-3.85) 3.43 (2.93-4.01) 3.89 (3.34-4.52) 3.83 (3.15-4.76) 4.01 (3.31-4.95) 4.17 (3.45-5.12) 4.68 (3.87-5.66) 4.44 (3.54-5.59) 4.63 (3.71-5.78} 4.79 (3.85-5.97) 5.30 (4.27-6.52) 428 (3.704.96)] 5.10 (4.23-6.12) 5.74 (4.64-7.00J 5.26 (a.se-s.oa) 6.06 (5.29-6.92) 7.11 (6.24-8.07)] 8.04 (7.08-9.10) 6.17 (5.14-7.29) 7.05 (5.90-8.27) 8.23 (6.92-9.58) 9.29 (7.83-10.8) 6.85 (5.57-8.24) 7.78 (6.36-9.29) 9.05 (7.43-10.7) 10.2 (8.39-12.0) 100 0.903 (0.660-1.25) 1.32 (0.966-1.82) 1.61 (,.,8_Z.ZZJ 2.17 (1.59-3.00) 2.71 (1.99-3.76) 3.25 (2.40-4.47) 3.53 (2.63-4.84) 3.95 (2.96-5.34) [ 4.30 (3.24-5.73) 4.67 (3.55-6.14) 5.09 (3.89-6.59) 5.28 (4.06-6.80) 5.44 (4.20-6.97) 5.95 (4.61-7.52) 6.38 (4.96-8.00) 7.51 (5.89-9.30) 8.49 (6.69-10.4) 9.83 (7.77.12.0) 11.0 (8.76-13.4) 200 1.06 (0135-1.51) [1.55 itl .08-2.21 j 1.89 (1.31-2.69) 2.56 (1.77-3.64) 500 1.29 (0.850-1.89) 1.69 (1.25-2.77) 2.30 (1.52-3.38) 3.22 (2.23-4.59) 3.88 (2.72-5.50) 4.22 (2.98-5.97) 3.12 (2.06-4.57) 3.96 (2.62-5.83) 4.81 (3.21-7.01) 5.26 (3.54-7.65) 4.68 (3.33-6.53) 5.01 (8.59-6.88) 5.39 (3.89-7.30) 5.78 (4.20-7.72) 5.98 (4.38-7.94) 5/7 (3.91-8.28) 6.04 (4.12-8.54) 6.41 (442-8.95) 6.14 (4.51-8.12) 6.62 (4.89-8.64) 7.04 (5.22-8.10) 8.18 (6.11-10.4) 9.19 (6.91-11.6) 10.6 (7.99-13.3) 11.9 (8.98-14.8) 6.75 (4.69-9.31) 6.96 (4.87-9.54) 7.13 (5.00-9.71) 7.54 (5.33-10.1) 7.91 (5.61-10.6) 9.04 (6.47-11.9) 10.1 (7.26-13.2) 11.5 (8.34-15.0) 12.8 (9.32-16.6) 1000 1.48 (0.938-2.18) 2.17 (1.37-3.20) 2.64 (1.68-3.90) 8.58 (227-5.2$) 4.58 (2.91-6.76) 5.58 (3.58-8.16) 6.14 (3.96-8.92) 6.67 (4.35-9.60) 6.88 (4.53-9.79) 7.24 (4.81-10.2) 7.54 (5.06-10.5) 7.75 (5.24-10.7) 7.91 (5.38-10.9) 8.25 (5.66-11.3) 8.57 (5.91-11.7) 9.67 (6.74-13.0) 10.7 (7.52-14.4) 12.2 (8.61-16.2) 13.5 (9.59-17.9) 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 internal. 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 PF graphical - 2 1 of 4 11/16/2018, 2:15 PM Precipitation Frequency Data Server https://hdsc.nsys,noaa.gcv/lhdsc/pfdW1pf :s _ rintpageehtrnlfat=40.3723&... Precipitation depth (in) PDS-based depth -duration -frequency (DDJF}} curves Latitude: 40.3 23 ar Longitude: -104..6274' ChuraLLon 1 173 r13 r14 r sT 5 10 25 50 100 NOM Atlas 14, Volume 8, Version 2 Average recurrence interval (years) 200 r13 ►: ! -a -Q I 1 1 1 6 6 o rn o 500 1000 Created (GMT}: Fri Nov 16 21:15:23 2018 Back to Top Maps & aerials small scale terrain .Av&rago r&c_urren'e interval (years I 1 2 5 10 25 50 100 200 500 1000 Duration 5 -nun — 2 -day 1 0-irnire 3 -day 15--cnn 4 -day 30 -min — ?-day 66 in 10 -day 2 -hr —i 20 -days 3 -hr — 30-1 ay 6 -hr — 4 fird aye 12 -hr — 60 —day. 24 -hr C-3 2 of 4 11/16/2018, :15 PM Precipitation Frequency Data Server https:.i`/h c.n ,noaa.gov/hdsc/pfds pf :s _ rintpage.htrnlfat=40.3723&.... Large scale terrain s 4 t F; ▪ r 1n tAn tar_ }, ' far -W.011 ins a L n a Peik .1345m • Boulder 1 � a � •h 1k:i�p e Bri t e Ott+ 100'km 60mi 01 - • • eyenne It eeley Longl nt •Denver Large scale map Large scale aerial C-4 3 of 4 11/16/2018, :15 P Precipitation Frequency Data Server https:.I/h c.n ,noaa.govlhdsc/pfd pfds _ rintpage.htrnlfat=40.3723&.... Back to Top US Department of Commerce National Oceanic and Atmospheric Administration National Weather Service National Water Center 1325 East West Highway Silver Spring, MD 20910 Questions?: H0SC.Questions@noaa.gov Disclaimer C-5 4 of 4 11116/2018, 2:15 PM Appendix D: Area Weighted Imperviousness Values AREA WEIGHTED IMPERVIOUSNESS VALUES AUBURN COMPRESSOR STATION SECTION 26, TOWNSHIP 5 N, RANGE 65 W - WELD COUNTY, CO HISTORIC CONDITIONS Surface Characteristic Basin (H) PR -1 A, acre I, % Al Undeveloped 4.33 2 8.66 Atotalacre 4 weighted, �v 4.33 2.0 DEVELOPED CONDITIONS TRIBUTARY TO DETENTION POND Surface Characteristic Basin PR -1 A, acre I, % Al Roofs Gravel Roads Gravel Surface Pond Surface Undeveloped 0.6235 90 56.11 0.4156 40 16.63 2/340 40 109.36 0.5550 100 55.50 0.0000 2 0.00 Atatsi, acre Iweightedl % 4.33 54.90 Table POO-3—Recommended Perce.^ tau@ Imperviousness Values _and ._Ise Dr Da:..: i 'a:e Charas-se r'!s-.',-a:s =--::er face '.Spera :-i P.an ry i- r r r-. - -, -, r �s eIg1 LI :' -fie.: L�0a !AE. L Reg: Cgirit 7 : ., i ; criuuit -jn : cet :he : , C 'rlult -sin :ar..a He :ti -1alf-ace lot or ',arger °. ridtri .r as . , - y:areas 2C -leata areas, J i_ c _ 3 -k-= O e -mete r es FS - .Firt Poi r: B l C .ailrtaid ya-r.3 areas 1 L . Jn leue''opecl ,areas: li slot. :. few art;lyS 1 2 -__nbei 7i, agPr ".0 -77 ei .. _. r -s i oo; ar a5, x! 5 :wher' and sedef- . r - ' 2:reets: a a•i t 4e�� 1.:0 2 -_ ee •:F �� 1-:e cl : L _nrra sic..; -:E I. s ,. I.ocfs GC _?vs s:- ,h° SD ' r 3 —3*(111-5. 0 = aley SIC I r ill ` ire_ F. t'rough ;7: percent_ ; '.r''pery c „cress. Appendix E: Hydrologic Calculations Calculation of Peak Runoff using Rational Method Designer: Ft. Cat,.! Company: DaFC 11._^11R Frolcet Album Campra..:arSlolLn Location: NV:1.1 Cat Iv. CO C.:I'. ]r WI:. :Nu' d1'^. Cr r.:.j1lr,`..11C.`.c- nplll .l1'.^. Cr :pllaPal .ic. ut1: cYu::. r:.ulla ha.:.i an .w. ul.1:;, - IL:Pili I.I '. It1t t1' f:17K ;Sr (:IIYr it I1' I nlrphmd t1' t1' - I t, I Itotinllal tr - l.5: I? FO I tt-In'-...- 5 lurhan, Truk -Lt.- 1'.71 non nrt:81, Sririled t-ua^It.rIrlr Fr hl. mrpited L. ken 5553t_ 1.hour 1a Inf5lldip Ih, 1a1 In: 2-yr 1.35 5-yr 1.1. 10i'r 75-tr 50-yr 1(10i'r 50t-yr 1.41 1.95 t 1.5 2_-1 3.:15 f b e 54 Y Rainfall Intensity Equallon Cocgieienls 1'i 25.75 1 13.3:, I .1.75 j I I'.,hL. r. 1^flha :Moir.t.l Franl I''} lit, Ink. Euh cachmcnt Plaint Area -C� I• MRCS HOUro'upie Sull.3roup Percent Im Crt'ou nt&i P Pun on Co dllelent. C Overland Ilniiat Flow Time Channcllied Travel Flow Time Time or Co neenirallon P.alntall In tonally. I iln'hrl Ptak Flow. 0 efs! 2-yr r 5-yr 1C -y1' r 25i'r !0-tr 100i'r r MAI Crciland FIO a'i en gth lit;t_Imin; WE. Elevation 04 IDplmnal; D15 Eleuallon MI !Opllonal; Cvcrland Flow SON Cvcgand Flow ilmt t im It; Channcllzcd Flow Length I., IN WE. ElevallOn IR; IC pllonal; WS Elevation IN pip Ir.roi: Ch:nncllzed Flow 5lopt 2. OM twos Con vevanee Factor Channcllud FIOWVOIOCIt'r I{Irhscc; Channellted Flow Time litmin; Computed RCalon51 t_Imin; SC1Ct:d t-Imin: 2-yr 5-t1' 10-yr 25-yr 5C -y1' 100-'1' 510-y1' 2-yr 5-yr 1e -V1' 25i'r CD -N 100i'r !DO-yr PR -1 ..33 D 5...5'1'l 1.3 3.9 15. 3.53 3.55 7.'1 3- 5 11 :1775 TL97 -.iii 7.333 25 1.13 553 'T-55 - . r 9 '. iD - 1.51 ';CI _l.- 3.31 Xii' ..-5 5.35 _.'u ..1° ..-. °BS 11..1 1.53 __'.9] 'Fr; PE -1 •.:13 D '_.l •l.. D 5 ...iv _ r .c .1 a..t .i...i _ ' .i..d _ 5. a..lu 533 33 1113 "'- -'.1 ,1'1 53 31 3.333 5 l.T 553 '•t �.t 25I 19 21' r.. a .:.. �2 ..._ 225 1 25. . I . a.1 ..d_ :1.. _ ...a .L..l . . .2. '2-t .l._;1 Ti.?!_ a._.1 PR.2 5.35 C 2_3 5.:d .1..15 115 5.55 n..l 1,5 :t.55 1'1111 1173 52.:1:1 1°R.15 1313 5 1.2' 11.. '..5 319' 51.52 1.31 1.75 2.1. 2.F2 1.' ..11 5.11 D.:1' 3..9 1.55 5..12 -.5 1535 15.22 FR -1 ICL LEF.r1;. 1.11 D .1 .1 1:1 1.3:1 .1.3 1-5. .1.53 1.: 5 1 1'1 '1'111 -Illr 2..Fir '1311 1.113 ?1 1.13 133 232O -13 T- 2_3- 7 1.' . ' 3. 253 3.33 ..:15 .....5 7.13 1.51 1S'_ 1._27 _2.71 2.55 l.7 5.53 FE -1 1�'LI`iLEF.T �' 1.91 0 _ _ ..i5 .1.2.1 1.35 1.a 1.5. 3.55 l.:T.l 1.'1 2_5331 . _ .t.il5 2..1' 21111 1.113 23 1.1.1 :133 25.3.1 21'7_ 1 27'S td* 2.3. 253 3.33 ..5535 ..95 '.1l 1.9. 1.5. 1.55 3.29 ..aa FLED 5.1' EX -1 7.1.55 0 '_ 3 5.51 .1..15 115 5.55 DD .1..-a 5.5FI 51131.1 5333 52.11 .. tilt i .3 ..11 3 5 _ D .2_ va..3 121.51 -1 3 513 .1.5 1.15 i':1 1.9.51 225 2'.l 3.1. 1.19 1.25 •.2. 12.Fr 19.:'15 2'.- .9.22 Appendix F: Detention Basin Volume by the Modified FAA Method ROCKY MOUNTAIN MIDSTREAM, LLC DESIGN POND VOLUMES Water Quality Capture Volume A WQCV = 12[0.9113-1.1912+0.781] where:. 1 = Percent Impervious {%/100) = 54.90% A = basin area (acres) = 4.33 ac WQCV =2 4.33 [0.91(0.549)3 — 1.19(0.549)z + 0.78(0.549)] = 0.0794 ac — ft WQCV = 3, 460 cf 10-yr Runoff Volume From FAA Worksheet — V10 4, 871 cf 100-yr Runoff Volume From FAA Worksheet - V100 26, 978 cf DETENTION VOLUME BY THE MODIFIED FAA, METHOD Project: Auburn Compressor Station Basin ID: Storm water Detention Pond (For catchments less than 160 acres only. For larger catchments, use hydrograph routing method) (NOTE: for catchments larger than 90 acres, CUHP hycdrograph 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): I,, = A = Type = T = Tc = q = P, = 01 = C2 = C3 = percent acres A, B, C, or D years (2, 5, 10, 25, 50, or 100) minutes cfsfacre inches Design Information (Input): 1, = A = Type = T =I Tc = q = P1 = 01= 02 = C3= 54.90 percent acres A, B, C, or D (2, 5, 10, 25, 50, or 100) minutes cfstacre inches Catchment Drainage Imperviousness Catchment Drainage Area Predevelopment MRCS Soil Group Return Period for Detention Control Time of Cementation of Watershed Allowable Unit Release Rate One -hour Precipitation Design Rainfall IDF Formula I = C1x P11(C2+TtrCs Coefficient One Coefficient Two Coefficient Three 54.90 Catchment Drainage Imperviousness Catchment Drainage Area Predevelopment NRCS Soil Group Return Period for Detention Control Time of Concentration of Watershed Allowable Unit Release Rate One -hour Pedpitation Design Rainfall IDF Formula I = C1R P1f(C2+Te)"G. Coefficient One Coefficient Two Coefficient Three 4.330 4.330 D D 1.0 100 Jyears 25 25 0.33 0.33 1.14 2.71 28.50 28.50 10 10 _ 0.789 0.789 Determination of Average Outflow from the Basin (Calculated): cfs cfs cubic feet acre -ft 5 -Minutes) Determination of Average Outflow from the Basin (Calculated): cfs cfs cubic feet acre -ft Runoff Coefficient Inflow Peak Runoff Allowable Peak C = Qp-in = Outflow Rate Qp-out = Mad. FAA Minor Storage Volume = Mod. FAA Minor Storage Volume = =- Enter Rainfall Du a'lon Incremental Increase VAue 0.48 Runoff Coefficient C = Inflow Peak Runoff Op -In= Allowable Peak Outflow Rate Op -out = Mod. FAA Major Storage Volume = Mod. FAA Major Storage Volume = 0.62 4.09 12.54 1.43 1.43 4,871 26,978 0.112 0.619 5 Here (e q. 5 for Rainfall Duration minutes (Input) Rainfall Intensity inches 1 hr (output) Inflow Volume acre-feet (output) Adjustment Factor urn" (output) Average Outflow cfs (output) Outflow Volume acre-feet (output) Storage Volume acre-feet (output) Rjnfdl Duration mirutes (input) Rainfall Intensity inches ! hr- (output) Inflow Volume acre-feet (output) Adjustment Factor "m" (output) Average Outflow cfs (output) Outflow Volume are -feet (output) Storage Volume acre-feet (ouput) 0 0.00 0.000 0.00 0.00 0.000 0.000 0 0.00 0.000 0.00 0.00 0.000 0.000 5 3.84 0.055 1.00 1.43 0.010 0.045 5 9.12 0.169 1.00 1.43 0.010 0.159 10 3.06 0.088 1.00 1.43 0.020 0.068 10 727 0,269 _ 1.00 1.43 0.020 0.249 15 2.56 0.110 1.00 1.43 0.030 0.081 15 6.09 0.338 1.00 1.43 0.030 0.308 20 2.22 0.127 1.00 1.43 0.039 0.088 20 5.28 D.390 1.00 1.43 0.039 0.351 25 1W 0.141 1.00 1:43 0.049 0.091 25 4.67 0.432 1.00 1.43 0,049 0.383 30 1/7 0.152 0.92 1.31 0.054 0.096 30 411 0.467 0.92 1.31 0,054 0.412 35 1.61 0.162 0.86 1.23 0.059 0.102 35 3.83 0.496 0.86 123 0.059 0.437 40 1.48 0.170 0.81 1.16 0.064 0.106 4D 3.53 0.522 0.81 1.16 0.064 0.458 45 1.38 0.177 0.78 1,11 0.069 0.106 45 3.27 0.544 0.78 1.11 0.069 0475 50 1.28 0.184 015 1.07 0.074 0.110 50 3.05 D.565 D.75 1.07 0.074 0.491 55 1.21 0.190 013 1.04 0.079 0111 55 2.87 0.583 0.73 1.04 0.079 0.504 60 1.14 0.195 0.71 1.01 0.084 0.112 60 2.70 0.600 0.71 '1.01 0.084 0.516 65 70 1.08 1.02 0.200 0.205 0.69 0.68 0.99 D.97 0.089 0.112 65 2.56 0.616 D.69 0.99 0.089 D.527 0.094 0112 7D 2.43 0.630 0.68 0.97 0.094 0.536 75 0.98 0.210 0.67 0.95 0.098 0.111 75 2.32 0.643 0:67 0.95 0.098 0.545 80 D.93 0.214 0.66 0,94 0.103 0.110 8D 2.22 0.656 0.66 0.94 0.103 0.553 85 0.89 0.218 0.65 D.93 0.108 0109 85 2.13 0.668 0.65 0.93 0.108 0.560 00 0.86 0.221 0.64 0.91 0.113 0108 90 2.04 0.679 0.64 0.91 0.113 0.566 95 0.83 0.225 0.63 0.90 0.118 0.106 95 1.96 D.690 0.63 0.90 0.118 0.572 100 0.80 0.228 0.63 0,89 0.123 0105 100 1.89 D.700 D.63 0.89 D.123 D.577 105 077 0.231 0.82 0.69 0.128 0.103 105 1.83 0.710 0:62 0.89 0.128 0.582 110 0.74 0.234 0.61 0.88 0.133 0.101 110 1.77 0.719 0.61 0.88 0.133 0.586 115 D.72 0.237 0.61 0.87 0.138 0.099 115 1.71 D.728 0.61 0.87 D.138 0.590 120 0.70 0,240 0.60 0.86 0.143 0.097 120 1.66 0/36 0.60 0.86 0.143 0.593 125 0.68 0.242 0.60 0.86 0.148 D.095 125 1.61 0.744 0.60 0.86 0.148 0.597 130 0.66 0.245 0.60 0,85 _ 0.153 0.092 130 1.57 0/52 0.60 0.85 0.153 0.600 135 0.64 0.247 0.59 0..85 0.156 0.090 135 1.52 0.760 0.59 0.85 0.158 0.602 140 0.62 0.250 0.59 D.84 0.162 0.087 140 1.48 D.767 0.59 0.84 0.162 0.605 145 D.61 0.252 0.59 0.84 0.167 0.085 145 1.44 0.774 D.59 0.84 0.167 0.607 150 0.59 0.254 0.58 0,83 0.172 0.082 150 1.41 0181 0.58 0.83 0.172 0.609 155 0.58 0.257 D.58 0.83 0.177 0.079 155 1.37 0.788 0.58 0.83 0.177 0.611 160 D.56 0.259 D.58 0,83 0.182 0.077 160 1.34 0.794 0.58 0.83 0..182 0.612 165 0.55 0.261 0.58 0.62 0.187 0.074 165 1.31 0.801 0.58 0.82 0.187 0.614 170 D.54 0.263 0.57 D.82 0.192 0.071 170 128 0.807 0.57 0.82 0.192 0.615 175 0.53 0.265 0.57 0.82 0.197 0.068 175 126 0.813 0.57 0.82 0.197 0.616 180 0.52 0.267 0.57 0.81 0.202 0.065 180 123 0.819 0.57 0.81 0.202 0.617 185 D.51 0.268 0.57 0.81 0.207 0.082 185 120 0.824 0.57 0.81 0.207 0.617 190 0.50 0.270 0.57 0,81 0.212 0.059 190 1.18 0,830 0.57 0.81 0.212 0.618 195 0.49 0.272 0.56 0.81 0.21.7 0.055 195 1.16 0.835 0.56 0.81 0.217 0.619 200 D.48 0.274 0.56 0.80 0222 0.052 200 1.14 0.841 0.56 0.80 0.222 0.619 205 D.47 0.275 0.56 0.80 0227 0.049 205 1.12 0.846 0.56 0.80 D.227 0.619 210 0:46 0277 0,56 0.80 0.231 0.046 210 1.10 0.851 0.56 0.80 0.231 0.619 215 0.45 0279 0.56 0.80 0236 0.042 215 1.08 0.856 0.56 0.80 0.236 0.619 220 0.44 0380 0.56 0.80 0241 0.039 220 1.06 0.861 0.56 0.80 0.241 0.619 225 0.44 0282 0.56 0.79 0.246 0,036 225 1.04 0.865 0.56 0.79 0.246 0119 23D 0.43 0283 D.55 0.79 0251 0.032 230 1.02 0.870 0.55 0/9 0.251 0.619 235 0.42 0285 0.55 0.79 0256 0.029 235 1.01 D.875 0.55 0/9 0.256 0.618 240 0.42 0.286 0.55 0.79 0261 0.025 240 0.99 0.879 0.55 0.79 0.261 0.618 245 0.41 0288 0.55 0.79 0266 0,022 245 0.98 0.883 0.55 0/9 0.266 0.618 250 0.40 0.289 0.55 0.79 0271 0.018 250 0.96 D.888 0.55 019 0.271 0.617 255 0.40 0290 0,55 0.79 0.276 0.015 255 0.95 0.892 0.55 0/9 0.276 0.616 260 0.39 0292 0.55 0.78 0281 0.011 260 0.93 0.896 0.55 0/8 0.281 0.615 265 0.39 0293 0.55 0.78 0286 D.008 265 0.92 0.900 0.55 0/8 0.286 0.615 270 0.38 0295 0.55 0.78 0291 0.004 270 0.91 0.904 0.55 0/8 0.291 0.614 275 0.38 0296 0.55 0.78 0295 D.000 275 0.89 0.908 0.55 0/8 0.295 0.613 280 0.37 0297 0.54 0.78 0.30D -0.003 280 0.88 0.912 0.54 0.78 0.300 0.612 285 0.37 0.298 0.54 0.7 8 0.305 -0.007 285 0.87 0.916 0.54 0.78 0.305 0.611 290 0.36 0.300 0.54 0.78 0.310 -0.011 290 0.86 D.920 0.54 0.78 0.310 0.610 295 0.36 0.301 0.54 0.78 0.315 -0.014 295 0.85 D.924 0.54 018 0.315 0.608 300 0.35 0.302 0.54 0.77 0.320 -0.018 300 0.84 0.927 0.54 0.77 0.320 0.607 Mod. FAA Minor Storage Volume (cubic ft.) = 4,871 Mod. FAA Major Storage Volume (cubic ft.) = Mod. FAA Minor Storage Volume (acre -ft.) = 0.1118 Mod. FAA Major Storage Volume (acre -ft.) _ UDFCD DETENTION BASIN VOLUME ESTIMATING WORKBOOK Version 2.35. Released January 2015 26,978 0.6193 F_AL&rn CS - UD-Detention_v2.35 (FAA).xls. Modified FAA F-3 6:53 PM DETENTION VOLUME BY THE MODIFIED FAA METHOD Project: Auburn Compressor Station Basin ID: Stormwater Detention Pond r Inflow and Outflow Volumes vs. Rainfall Duration 1 0.9 0.8 0.7 0.6 a 4 0.5 j > 0.4 0.3 0.2 0.1 0 i I #iiifiiiii•••iiiii•i•iiii#•#*iiii.#,�•*i •#ii . ii ii i 0 4 i * i i .. r 1 - Lt o} I I I M1 ri r ti • 1 I J i •, • 1 ^ - J ! Li;- _ _i '1 .1 0 50 100 150 200 Duration (Minutes) 250 300 ..��Min CrSD) ern Inflow Whim* ii'inor ot'm iilamVMS nie es Wort tarmatoms Volume - Majoe:tarminn GYP Vohs w titajoeStorntlaUtlaw*fuw • Meiorstorm MtarevpVal um* 350 I UDEGD DETENTION BASIN VOLUME ESTIMATING WORKBOOK Version 2.35, Released January 2015 F_AUbum CS - UD-Detention +2,35 (FAA).xls, Modified FAA F-4 111192018.6:53 PM Appendix G: Detention Basin Stage -Storage Rocky Mountain Midstream, tic - Detention Pond Stage —Storage Calculation By: M. Cloud Date: 11/19/2018 = variable user input Contour Elevation Contour Area Dept incremental Volume Avg. End Cumulative Volume Avg. End. ft ft` ft ft' fta 4644.50 0.00 0.00 0.0000 0.00 4644.51. 210.13 0.01 1,0507 1,05 4644.52 84031 0.01 5.2532 6.30 4644.53 1891.14 0.01 13.6583 19,96 4644.54 3362.,02 0.01 26.2658 46,23 4644.55 5253.16 0.01 43.0759 89,30 4644.56 7363.83 0..01 63.0850 152.39 4644.57 9482.85 0.01 84.2334 236.62 4644.58 11611.92 0.01 105.4739 342.10 4644.59 13751.06 0.01 126.8149 468.91 4644.60 15887.21 0.01 148.1914 617.10 4644.61 17733.30 0.01 168.1026 785,20 4644.62. 19171.89 0.01 184.5260 969.73 4644.63 20202,98 0.01 196.8744 1166.61 4644.64 20826.57 0.01 205.1478 1371.75 4644.65 21042.91 0.01 209.3474 1581.10 4644.66 21069.40 0.01 210.5616 1791.66 4644.67 21095.92 0.01 210,8266 2002.49 4644.68 21122,44 0.01 211.0918 2213.58 4644,69 21148.98 0.01 2113571 2424.94 4644.70 2117533 0.01 211.6226 2636.56 4644.71 21202.09 0.01 2112881 2848.45 4644.72 212.28,67 0.01 212.1538 3060.60 4644,73 21255.26 0.01 212.4197 3273.02. 4644.74 21281.86 0,01 212.6856 3485.71 4644.75 21308.47 0.01 2119517 3698.66 4644.76 21335,10 0.01 213.1179 3911.88 4644.77 21361.74 0.01 213.4842 4125.36 4644.78 21388.39 0.01 213.7507 4339.11 4644.79 21415.06 0.01 214.0173 4553.13 4644.80 21441.74 0.01 214.2840 4767.41 4644.81 21468.43 0.01 214.5509 4981.96 4644.82 21495.13 0.01 214.8178 5196.78 4644.83 21521.85 0.01 215.0849 5411.87 4644.84 21548.58 0.01 215,3522 5627.22 4644.85 21575,32 0.01 215.6195 5842.84 4644.86 21602,08 0.01 215.8870 6058,72 4644.87 21628.85 0,01 216.1.547 6274.88 4644.88 21655,63 0.01 2164224 6491.30 4644489 21682.43 0.01 216.6903 6707.99 4644.90 21709,23 0.01 216.9583 6924.95 4644.91 21736.05 0.01 217.2.264 7142.18 4644.92 21762.89 0.01 217..4947 7359,67 4644.93 21789.73 0.01 217.7631 7577.43 4644.94 21816.59 0.01 218.0316 7795.47 4644.95 21843.47 0,01 2183003 8013,77 4644.96 21870.35 0.01 218.5691 8232.34 4644.97 21897.25 0.01 218.8380 8451.17 4644.98 21924.16 0.01 219.1071 8670.28 4644.99 21951.08 0.01 2193762 8889,66 4645.00 21978.02 0.01 219.6455 9109.30 4645.01 22004,97 0.01 219.9150 9329.22 4645.02 22031.93 0.01 220.1845 9549.40 4645,03 2205 8.91 0.01 220.4542 9769.86 4645,04 22085.89 0.01 220.7240 999038 4645.05 22112.89 0.01 22(19939 10211.57 4645.06 22139.91 0.01 221.,2640 10432.84 4645,07 22166.94 0.01 221.5343 10654.37 4645,08 22193.97 0.01 221.8046 10876.18 4645.09 22221.03 0.01 222.0750 11098,25 4645.10 22248.09 0.01 2213456 11320,60 4645.11 22275,17 0.01 222.6163 11543.21 4645,12 22302.26 0.01 222.8872 11766.10 4645.13 22329.37 0.01 223.1582 11989,26 4645.14 22356,48 0.01 223.4293 12212,69 4645.15 22383 ,61 0.01 223.7005 12436.39 4645.16 22410.75 0.01 223.9718 12660.36 4645.17 22437.91 0.01 224.2433 12884,60 4645.18 22465.08 0.01 224.5150 13109.12 4645.19 22492.26 0,01 224.7867 13333,.91 4645.20 22519.45 0.01 225.0586 13558.96 4645.21 22546.66 0.01 225.3306 13784.29 4645.22 22573.88 0.01 225.6027 14009.90 4645.23 22601.11 0.01 225.8750 14235.77 4645.24 22628.36 0.01 226.1474 14461.92 4645.25 22655,62 0.01 226.4199 14688,34 4645.26 22682.89 0.01 226.6926 14915.03 4645,27 22710.17 0.01 226.9653 15142.00 4645,28 22737.47 0.01 227.2382 15369,24 4645.29 22764, 78 0.01 227.5113 15596.75 4645.30 22792.10 0.01 227„7844 15824,53 4645.31 22819.44 0.01 228.0577 16052.59 4645.32 22846.79 0.01 228,331.2 16280,92 4645.33 22874.15 0.01 228.6047 16509,52 Nate: The user inputs the measured contour area for each contour elevation interval as mesured from the design pond. A8+AT i!_ 2 where: V = Incremental Average End -Area Volume (ft3) AB= contour area at bottom of depth increment ) A = contour area at top of depth increment f 2 d = incremental depth (ft) Auburn CS Stage -Storage Interval (ft} Elevation (ft) Area (ft2) Volume (ft3) Description 0.00 4644.50 0.00 0.00 0.24 4644.74 21281.86 3485.71 WQCV1 0.31 4644.81 21468.43 4981.96 10-yr Elevations 0.50 4645.00 21978.02 9109.30 1.00 4645.50 23341.26 20437.78 1.28 4645.78 24118.74 27081.95 100-yr Elevation3 1.30 4645.80 24174.66 27564.88 Spillway 2.10 4646.60 26452.44 47810.56 Top of Pond Berm WOCV Notes; 1. Required design WQCV = 3,460 cf 2. Required deisgn 10 -year Storage Volume= 4,871 cf 3 . Required design 100 -year Storage Volume = 26,978 cf 10-YR 4647.0 4646.50 4646.00 464530 4645.00 464430 Rocky Mountain Midstream, LLC - Auburn CS Stage -Storage 4644.00 0 10000 20000 30000 400000 50000 60000 G-2 4645,34 22901.52 0.01 228,8784 16738,40 4645.35 22928.91 0.01 229,152.2 16967.56 4645,36 22956,31 0.01 229,4261 17196.98 4645.37 22983.72 0.01 229.7002. 17426.68 4645.35 23011.15 0.01 229.9744 17656,66 4645.39 23038,59 0.01 230.2487 17..6.90 4645.40 23066.04 0.01 230.5232 18117.43 4645.41 23093.50 0.01 230.7977 18348.23 4645.42 23120.98 0.01 231.0724 18579.30 4645.43 23148.47 0.01 231.3473 18810.64 4645.44 23175,97 0.01 231.6222 19042.27 4645.45 23203.49 0.01 231.8973 19274,16 4645,46 23231.02 0.01 232.1726 19506.34 4645.47 23258.56 0.01 232.4479 19738.78 4645.48 23286,11 0.01 232,7234 19971.51 4645.49 23313.68 0.01 232.9990 20204.51 4645,50 23341.26 0.01 233.2747 20437.78 4645.51 23368.86 0.01 233,5506 20671.33 4645.52 23396,46 0.01 233.8266 20905.16 4645.53 23424,08 0.01 234.1027 21139.26 4645.54 23451.71 0.01 234.3790 21373.64 4645,55 23479.36 0.01 234.6554 21608.30 4645.56 23507,01 0.01 234,9319 21843.23 4645.57 23534,69 0.01 235.2085 22078.44 4645,58 23562.37 0.01 235.4853 22313.92 4645.59 23590.06 0.01 235.7622 22549'.68 4645,60 23617.77 0.01 236.0392 22785,72 4645.61 23645.50 0.01 236,3164 23022,04 4645,62 23673.23 0.01 236.5937 23258.63 4645.63 23700,98 0.01 236.8711 23495.50 4645.64 23728.74 0.01 237.1486 23732.65 4645.65 23756,51 0.01 237.4263 23970.08 4645,66 23784.30 0.01 237.7041 24207.78 4645.67 23812.10 0.01 237.9820 24445.77 4645.68 23839.01 0.01 238.2601 24684.03 4645.69 23867.74 0.01 238,5383 2492156 4645,70 23895.57 0.01 238.8166 25161,38 4645.71 23923.42 0.01 239.0950 25400.47 4645.72 23951.29 0.01 239.3736 25639.85 4645.73 23979,16 0.01 239.6523 25879.50 4645.74 24007.05 0.01 239.9311 26119,43 4645.75 24034,96 0.01 240.2101 26359.64 464576 24062.87 0.01 240.4892 26600.13 4645.77 24090.80 0.01 240.7684 26840.90 4645,78 24118.74 0.01 241.0477 27081,95 4645.79 24146.69 0.01 241,3272 27323.27 4645,80 24174.66 0.01 241.6068 27564.88 4645.81 24202.64 0.01 241.8865 27806.77 4645,82 24230,63 0.01 242.1664 28048.93 4645.83 24258.64 0.01 242.4464 28291.38 4645.84 24286.66 0.01 242.7265 28534.11 4645.85 24314,69 0.01 243.0068 28777.11 4645,86 24342.73 0.01 243.2871 29020.40 4645.87 24370.79 0.01 243.5676 29263.97 4645.88 24398.86 0.01 243.8483 29507.82 4645.89 24426.94 0.01 244,1290 29751.95 4645.90 24455.04 0.01 244.4099 29996,36 4645.91 24483.15 0.01 244.6910 30241.05 4645.92 24511,27 0.01 244.9721 30456.02 4645.93 2453.9.40 0.01 245.2534 30731,27 4645.94 24567.55 0.01 245,5348 30976.81 4645.95 24595.71 0.01 245.8163 31222 ,62 4645,66 24623.88 0.01 246.0980 31468.72 4645.97 24652.07 0.01 246,3798 31715.10 4645,98 24680.26 0.01 246.6617 31961.76 4645.99! 24708.48 0.01 246,.9437 32208.71 4646.00 24736.70 0.01 247.2259 32455.93 4646,01 24764,94 0.01 247.5082 32703.44 4646.02 24793.19 0.01 247.7907 32951,23 4646.03 24821.45 0.01 248.0732 33199.30 4646.04 24849.73 0.01 248.3559 33447,66 4646.05 24578.01 0.01 248.6387 33696.30 4646.06 24906,32 0.01 248.9217 33945,22 4646.07 24934.63 0.01 249.2048 34194.42 4646.08 24962.96 0.01 249.4880 34443.91 4646.09 24991.30 0.01 2493713 34693.68 4646.10 25019,65 0.01 250.0548 34943.74 4646.11 25048.02 0.01 250.3384 35194.08 4646,.12 25076.40 0.01 250.6221 35444.70 4646.1.3 25104.79 0.01 250.9060 35695.60 4646,14 25133.19 0.01 251.1899 35946.79 4646.15 25161.61 0.01 251.4740 36198.27 4646.16 25190,04 0.01 251.7583 36450.03 4646,17 25218.48 0.01 252.0426 36702.07 4646.18 25246.94 0.01 252.3271 36954.40 464619 25275.41 0.01 252.6118 37207,01 4646,.20 25303.89 0.01 252.8965 37459.91 4646,..21. 25332.38 0.01 253.1814 37713.09 4646.22 25360.88 0.01 253.4663 37966.55 4646.23 25389.39 0.01 253.7514 38220.30 4646,24 25417.92 0.01 254.0366 38474.34 4646.25 25446.45 0.01 254.3219 38728.66 4646.26 25475.00 0.01 254,6073 38983.27 4646.27 25503.56 0.01 254,8928 39238.16 100-YR SPILLWAY 4646,28 25532,13 0.01 255,1785 39493.34 4646.29 25560.71 0.01 255.4642 39748.81 4646.30 25589,31 0.01 255.7501 40004.56 4646,31 25617A1 0.01 256.0361 40260, 59 4646.32 25646.53 0.01 256.3222 40516.91 4646.33 25675.15 0.01 256.6084 40773.52 4646.34 25703.79 0.01 256..8.947 41030,42 4646.35 25732,44 0,01 257.1812 41287.60 4646.36 25761.11 0.01 257.4678 41545.07 4646.37 25789.78 0.01 257,7545 41802.82 4646.38 25818.47 0.01 258,0413 42060.86 4646,39 25847.16 0.01 258.3282. 42319,19 4646.40 25875.87 0.01 258.6152 42577.80 4646.41 25904,59 0.01 258.9023 42836,71 4646.42 25933.32 0.01 259..1896 43095.90 4646,43 25962.06 0.01 259.4769 43355.37 4646.44 25990.82 0.01 259..7644 43615.14 4646,45 26019.58 0.01 260.0520 43875.19 4646.46 26048,36 0.01 260..3397 44135.53 4646,47 26077,15 0.01 260,6276 44396.16 4646.48 26105.95 0.01 260.9155 44657.07 4646,49 26134.76 0.01 261.2036 44918.28 4646.50 26163.58 0.01 261,4917 45179.77 4646.51 26192.41 0.01 261,7800 45441,55 4646.52 26221.26 0.01 262.0684 45703.62 4646.53 26250.12 0.01 262.3569 45965.97 4646.54 26278.99 0.01 262.6456 46228,62 4646.55 26307.87 0.01 262.9343 46491.55 4646.56 26336.76 0.01 263.2232 46754.78 4646.57 26365.66 0.01 263.512.1 47018.29 4646.58 26394.57 0.01 263,8012 47282.09 4646,59 26423.50 0.01 264.0904 47546.18 4646,60 26452.44 0.01 264,3797 47810.56 4646.61 26481.38 0.01 264,6691 48075.23 4646.62 26510.34 0.01 264.9586 48340.19 4646,63 26539,32 0.01 265.2483. 48605,44 4646.64 26568.30 0.01 265 ,5381 48870.97 4646.65 26597.29 0.01 265.8280 49136.80 4646.66 26626.30 0.01 266.1180 49402.92 4646.67 26655.32 0.01 266,4081 49669.33 4646,68 26684.35 0.01 266,6984 49936.03 4646,69' 26713.39 0.01 266,9887 50203.01 4646.70 26742.44 0.01 267.2792 50470.29 4646.71 26771.50 0.01 2673697 50737.86 4646.72 26800.57 0.01 267.8604 51005.72 464633 26829.66 0.01 268.1512 51273.87 4646.74 2685836 0.01 268,4421 51542,32 4646,75 26887.87 0.01 268.7332 51811,05 4646,76 26916S9 0.01 269.0243 5208007 4646.77 26946.12 0.01 269,3156 52349.39 4646.78 26975.26 0.01 269.6069 52619,00 4646,79 27004.42 0.01 269.8984 52888.90 4646,80 27033.58 0.01 270.1900 53159..0+9 TOP OF POND BERM Appendix H: Detention :'asln Outlet Structure Design Rocky Mountain Midstream, Lit Auburn CS- WQCV Orifice Design Worksheet Calculation By: Date; M. Cloud 11/19/2018 WQCV Orifice Plate Diagram: rrer.1 OF F Te ELEv PIPE INVERT ELEM Equations: Q C0A0 (2gH0)0.5 where: Q = orifice flow discharge Cd = dimensionless coefficient of discharge A0 = cross-sectional area of orifice (ft2) g = acceleration due to gravity (32.2 ft/s2) 1-10 = effective head on orifice, from centroid to water surface elevation (ft) _ 2 cos -1 KR R — � where. 0 = central angle made by plate ( CD < rr radians) R = pipe radius (in) d = restrictorplate opening height (in) AV At_ 3600Q where: At = drain time for incremen taldepth (hours) AV= storage volume drainedfrom stage increment (ft3) Q = orifice dischrage rate for stage increment (ft3/s) DESIGN INPUTS: Restrictor Plate Orifice Size Design Input: Outlet Pipe Diameter: Drain Time: Orifice Coefficient Gravitational Constant: D= ;liveable Co = lam= 12 inches 40 hours 0.6 32.2 ft/s2 1 VARIABLE INPUTS: Change Orifice Hole Diameter: Restrictor Plate Opening Height; Outlet Pipe Radius: Orifice Area: Central Angle: d = 0,6250 in R= 6 in Aa = 2.24617975 in2 (D = 0.92098685 rad CALCULATED RESULTS: Computed Orifice Centrold Elevation: Centroid Height Above Pipe invert: Orifice Centroid Elevation: Bottom of Plate Elevation: Cv _ E L, _ ELda-e = 0.3738 in 4644.53 ft 4644.55 ft A0 = R2 cos -1 �R R d` 1 where: A0 = cross-sectional area of orifice (in2) R = pipe radius (in) d = restrktor plate op en ingheiqh tin) Cy =R where: C = height of orifice centraid above pipe invert (in) (A = central angle made by plate ( CD < rr radians) R = pipe radius (in) (R — c.)\/2Rd 3 4R sin k 3 O — sin o Pond Geometry Design Input Bottom of Pond Elevation: Water Quality Capture Volume: WQCV Max Water Surface Eievation: ELBA _ WQCV = ELTp= 4644.50 ft 3460 ft3 4644.74 ft variable user input calculation variable r Change plate opening height to achieve 40 -hour residence time for WQCV Max Water Surface Elevation. SOLVE FOR DRAIN TIME: Calculated Drain Time: t Check: tW QCV - trequired = 0 39.59 hours -0.41 INTERMEDIATE CALCULATIONS: Notes: 1. Flow rate is calculated at each 0.10 ft stage decrease. It is assumed that the discharge rate calculated at the maximum stage value for each incremen tand the corresponding effective head is representative of the entire 0.10 ft depth. 2. Storage volumes are determined using the pond design contour areas and the average end -area method. WSEL Ho Q 4644.74 0.21 0.03432 4644,73 0.20 0.03349 4644.72 0.19 0.03264 4644.71 0.18 0.03176 4644.70 0.17 0.03086 4644.69 0.16 0.02993 4644.68 0.15 0.02898 4644.67 0.14 0.02799 4644.66 0.13 0.02696 4644.65 0.12 0.02589 4644.64 0.11 0.02478 4644.63 0.10 0.02361 4644.62 0.09 0.02239 4644.61 0.08 0.02109 4644.60 0.07 0.01971 4644.59 0.06 0.01822 4644.58 0.05 0.01660 4644.57 0.04 0.01480 4644.56 0.03 0.01276 4644.55 0.02 0.01031 4644.54 0.01 0.00706 4644.53 0.00 #NUM ! n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a nja n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a nja n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a nja n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a nja n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a nja n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a Volume at WSEL Incremental Volume Time Time Cumulative Time seconds hours 3485.71 3273.02 212.69 6196.54 1.72 1.72 3060.60 212.42 6342.50 1.76 3.48 2848.45 212.15 6500.11 1.81 5.29 2636.56 211.89 6671.00 1.85 7.14 2424.94 211.62 6857.10 1.90 9.05 2213.58 211.36 7060.78 1.96 11.01 2002.49 211.09 7284.95 2.02 13.03 1791.66 210.83 7533.26 2.09 15.12 1581.10 210.56 7810.30 2.17 17.29 1371.75 209.35 8085.36 2.25 19.54 1166.61 205.15 8279.13 2.30 21.84 969.73 196.87 8337.46 2.32 24.16 785.20 184.53 8242.57 2.29 26.44 617.10 168.10 7970.92 2.21 28.66 468.91 148.19 7519.82 2.09 30.75 342.10 126.81 6960.43 1.93 32.68 236.62 105.47 6354.11 1.77 34.45 152,39 84.23 5690.30 1.58 36.03 89.30 63.08 4945.47 1.37 37.40 46.23 43.08 4177.82 1.16 38.56 19.96 26.27 3718.29 1.03 39.59 n/a nja #NUM! *MUM! 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a nja n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 nja n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 nja n/a n/a nja 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 nja n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a nja n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a nja n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 nja n/a n/a n/a 39.59 nja n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a nja n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a nja n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a nja n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a n/a n/a n/a 39.59 n/a nja n/a n/a 39.59 Auburn Compressor Station - Detention Pond 10ocyr Storm Orifice Design Worksheet Calculation By: Date; M. Cloud 11/19/2018 Rectangular Orifice Plate Diagram: 100-YR. PEAK STAGE ELEV 1010-YR RECTANGULAR t:_I I I OM C,JI :it; tii7 DESIGN INPUTS: WQCV Orifice Size Design Input: IT F I Rectangular Orifice Width: Maximum Allowable Discharge Rate: Orifice Coefficient: Gravitational Constant: Wo= QallcwaL•le = Co = 8 inches 1.43 ft3/5 0.6 g = 32.2 ft/sl VARIABLE INPUTS: Change Orifice Hole Diameter: Rectangular Orifice Height: Hole Area: Top of orifice {less than Max WSEL): Do = Ao= 6.0000 in 48 Inz EL O = 4645.24 ft CALCULATED RESULTS: Computed Orifice Centroid Elevation: Centroid Elevation: Elcennid = 4644.99 ft CALCULATE Q AT MINOR STORM MAX WSEL: Effective Head on Orifice: Orifice Flow Discharge: Check: Qcate - Qallowable =0 Ho = Clcalc 0.79 ft 1.43 ft3/s 0.00 Equations: Q _ CoA0 (291lo o.s where: Q = orifice flow discharge Ca = dimensionless coefficient of discharge A0 = cross-sectional area of orifice (ft2) g = acceleration due to gravity (32.2 ft/s2) Hp = emctive head on orifice, from centroid to water surface elevation (ft) A0 = W0D0 where: Au = cross-sectional area of orifice (inz) Du= height of orifice opening (in) Wu= width of orifice opening (in) Pond Geometry Design Input: AV At = 3600Q where: At = drain time for incremental depth (hours) AV= storage volume drained from stage increment ft3) Q = orifice dischrage rate for stage increment (ft3/s) WQCV Peak Stage (Bottom of Rect. Orifice): 100-yr Storm Max Water Surface Elevation: Water Qua lity Capture Volume: 100-yr Storm Storage Volume: Volume Drained through Rectangular Orifice: ELF,= EL N= WQCV = V100 = ,design = 4644.74 ft 4645.78 ft 3556,71 ft' 27081.95 fe 23525.24 Le = variable user input calculation variable CALCULATE FOR POND DRAIN TIME FROM 100-YR MAX WSEL: Drain Time to Top of WQCV Orifice: Drain Time forWQCV: * From WQCV Orifice plate design worksheet Total Drain Time from Max WSEL: * CHECK: Total drain down time must be less than 72 -hours taa= twQ.Cv trail = 6.44 hours 39.59 hours 46.03 hours IPond drains in less than 72 hours INTERMEDIATE CALCULATIONS: Notes: 1. Flow rate is calculated at each 0.10 -ft stage decrease. It is assumed that the discharge rate calculated at the maximum stage value for each increment and the corresponding effective head is representative of the entire 0.10 -ft depth. 2. Storage volumes are determined using the pond design contour areas and the average end -area method. WSEL Ha Q 4645.78 0.79 1.42655 4645.77 0.78 1.41749 4645.76 0.77 1.40837 4645.75 0.76 1.39920 4645.74 0.75 1.38996 4645.73 0.74 1.38067 4645.72 0.73 1.37131 4645.71 0.72 1.36188 4645.70 0.71 1.35239 4645.69 0.70 1.34283 4645.68 0.69 1.33321 4645.67 0.68 1.32351 4645.66 0.67 1.31374 4645.65 0.66 1.30390 4645.64 0.65 1,29399 4645.63 0.64 1.28399 4645.62 0.63 1.27392 4645.61 0,62 1.26377 4645.60 0.61 1,25354 4645,59 0.60 1.24322 4645.58 0.59 1.23282 4645.57 0.58 1.22233 4645.56 0.57 1.21174 4645.55 0.56 1.20107 4645.54 0.55 1.19029 4645.53 0.54 1.17942 4645.52 0.53 1,16845 4645.51 0,52 1.15738 4645.50 0,51 1,14619 4645.49 0.50 1.13490 4645.48 0.49 1,12349 Volume at WSEL Incremental Time Time Cumulative Time Volume seconds hours 27081.95 26840.90 241.05 168.97 0.05 0.05 26600.13 240.77 169.86 0.05 0,0.9 26359,64 240.49 170.76 0.05 0.14 26119.43 240.21 171,.68 0.05 0.19 25879.50 239.93 172,62 0.05 0.24 25639,85 2.39.65 173,58 0.05 0.29 25400.47 23.9.37 174.56 0.05 0.33 25161.38 239.09 175.56 0.05 0.38 24922.56 238.82 176,59 0.05 0.43 24684.03 238.54 177.64 0.05 0.48 2444537 238...26 17831 0,05 0.53 24207.78 23738 179.81 0.05 0.58 23970.08 237,70 18034 0.05 0.63 23732.65 237.43 182,09 0,05 0,68 23495.50 237,15 183,27 0.05 0.73 23258,63 236.87 184.48 0.05 0.78 23022.04 236,59 185,72 0.05 0,84 22785.72 236.32 186.99 0.05 0,89 22549.68 2.36,04 188.30 0.05 0.94 22313.92 235.76 189.64 0.05 0.99 22078.44 235.49 191.01 0.05 1.05 21843.23 2.35,.21 192,43 0.05 1.10 21608..30 234,93 193.88 0.05 1.15 21373.64 2.34,66 195.37 0.05 1.21 21139,26 234.38 196.91 0.05 1.26 20905.16 234.10 198.49 0.06 1,32 20671.33 233.83 200.12 0.06 1.37 20437.78 233.55 201.79 0.06 1.43 20204.51 233.27 2 03.5 2 0.06 1.48 19971,51 233.00 205,30 0.06 1,54 H-4 4645.47 0.48 1.11197 4645.46 0.47 1.10033 4645.45 0.46 1.08856 4645A4 0:45 1.07666 4645.43 0.44 1.06463 4645.42 0.43 1.05246 4645.41 0.42 1.04015 4645.40 0.41 1.02770 4645.39 0.40 1.01509 4645.38 0.39 1.00232 4645.37 0.38 0.98938 4645.36 0.37 0,97628 4645.35 0.36 0.96300 4645.34 0.35 0.94953 4645.33 0.34 0.93586 4645.32 0.33 0.92200 4645.31 0.32 0.90792 4645.30 0.31 0.89362 4645.29 0.30 0.87909 4645.28 0.29 0.86431 4645.27 0.28 0.84928 4645.26 0,27 0.83398 4645.25 0.26 0.81839 4645.24 0.25 0,80250 4645.23 0.24 0.78628 4645.22 0,23 0,76973 4645.21 0.22 0.75281 4645.20 0.21 0.73550 4645.19 0.20 0.71777 4645.18 0.19 0.69960 4645.17 0.18 0.68094 4645.16 0.17 0.66176 4645.15 0.16 0.64200 4645.14 0.15 0.62161 4645.13 0.14 0,60053 4645.12 0.13 0.57869 4645.11 0.12 0.55599 4645.10 0.11 0.53232 4645.09 0.10 0.50754 4645.08 0.09 0.48150 4645.07 0.08 0.4539€ 4645.06 0.07 0.42464 4645.05 0.06 0.39314 4645.04 0.05 0.35889 4645.03 0.04 0.32100 4645.02 0.03 0.27799 4645.01 0.02 0,22698 4645.00 0.01 0.16050 4644.99 0.00 n/a 4644.98 -0.01 n/a 4644.97 -0,02 n/a 4644.96 -0.03 n/a 4644.95 -0.04 n/a 4644.94 -0.05 nja 4644.93 -0.06 nja 4644.92 -0.07 n/a 4644.91 -0.08 n/a 4644.90 -0,09 nfa 4644.89 -0.10 n/a 4644.88 -0.11 nfa 4644.87 -0.12 n/a 4644,86 -0,13 nfa 4644,85 -0.14 n/a 4644.84 -0.15 _ n/a 4644.83 =0.16 nja 4644.82 -0.17 nja 4644.81 -0.18 n/a 4644.80 -0.19 n/a 4644.79 -0.20 n/a 4644.78 -0,21 n/a 4644.77 -0,22 nfa 4644.76 -0,23 n/a 4644.75 -0.24 n/a n/a nfa nits n/a nfa nfa n/a n/a nfa n/a n/a nja n/a n/a n/a n/a n/a nja n/a n/a nja n/a n/a nfa n/a nfa nfa nfa nfa n/a n/a nfa nfa n/a nfa n/a n/a n/a n/a n/a n/a n/a n/a nfa n/a n/a nja n/a n/a nja n/a n/a nja n/a n/a nja n/a n/a nja n/a n/a nja n/a 19738.78 232.72 207.14 0.06 1.60 19506.34 232.45 209.04 0.06 1.66 19274.16 232.17 211.00 0.06 1.72 19042.27 231.90 213.03 0.06 1.78 18810.64 231.62 215.13 0.06 1.83 18579.30 231.35 217.30 0.06 1.90 18348,23 231.07 219.55 0.06 1.96 18117.43 230.80 2.21.89 0.06 2.02 17886.90 230,52 224.31 0.06 2.08 17656.66 230.25 226.83 0.06 2.14 17426.68 229.97 229.44 0.06 2.21 17196.98 229.70 232.16 0.06 2.27 16967.56 229'.43 235,00 0.07 234 16738.40 229.15 237.96 0,07 240 16509.52 22&88 241.04 0.07 2.47 16280.92 228.60 244.27 0.07 254 16052.59 228.33 247.65 0.07 2.61 15824.53 228.06 251.19 0.07 2.68 15596.75 227.78 254.90 0.07 2.75 15369.24 2.27.51 258.80 0.07 2.82 15142.00 2.27.24 262.91 0.07 2.89 14915.03 226.97 267.24 0.07 2,97 14688.34 226.69 271.82 0.08 3.04 14461.92 226.42 276,67 0.08 3.12 14235.77 226.15 281,80 0.08 3.20 14009.90 225.87 287.27 0.08 3,28 13784.29 22'5.60 293.09 0.08 336 13558.96 225.33 299.32 0.08 3.44 13333.91 225.06 305.99 0.08 3.53 13109.12 224.79 313.17 0.09 3.61 12884.60 2.24.51 320.92 0.09 3.70 12660.36 224.24 329.31 0.09 3.79 12436.39 223.97 338.45 0.09 3.89 12212.69 223.70 348.44 0.10 3.98 11989.26 223,43 359.44 0.10 4.08 11766.10 223.16 371.60 0.10 4.19 11543.21 2;22.89 385.16 0.11 4.29 11320.60 222,62 400.40 0,11 441 11098.25 222.35 417.69 0.12 452 10876.18 222.08 437.55 0.12 4.64 10654.37 221.80 460.66 0.13 4.77 10432.84 221.53 488.00 0.14 4.91 10211.57 221.26 521.06 0.14 5.05 9990.58 220.99 562.12 0.16 5.21 9769.86 220.72 615.02 0.17 538 9549.40 220.45 686.78 0.19 5.57 9329.22 220.18 792.05 0.22 5.79 9109.30 219.91 968.87 0,27 6.06 8889.66 219.65 1368.51 0.38 6.44 8670.28 219.38 n/a n/a 6.44 8451.17 219,11 n/a n/a 6,44 8232.34 218.84 n/a n/a 6.44 8013.77 218.57 n/a n/a 6.44 7795.47 218.30 n/a n/a 6.44 7577.43 218.03 n/a n/a 6,44 7359.67 217.76 n/a n/a 6.44 7142.18 2.17.49 n/a n/a 6.44 6924.95 217,23 n/a n/a 6.44 6707.99 216.96 n/a n/a 6.44 6491.30 216.69 n/a n/a 6.44 6274.88 216.42 n/a n/a 6.44 6058.72 216.15 n/a n/a 6.44 5842.84 215.89 n/a n/a 6.44 5627.22 215.62 n/a n/a 6.44 5411.87 215.35 n/a n/a 6.44 5196.78 215.08 n/a n/a 6.44 4981.96 214.82 n/a n/a 6.44 4767.41 214.55 n/a n/a 6.44 4553.13 214.28 n/a nja 6.44 4339,11 214.02 n/a n/a 6.44 4125.36 213.75 n/a nfa 6.44 3911.88 213,48 n/a nfa 6.44 3698.66 213.22 n/a nfa 6.44 n/a n/a nfa n/a 6.44 n/a n/a nfa nfa 644 n/a n/a nja n/a 6.44 n/a n/a nja n/a 6.44 n/a n/a nja n/a 6.44 Oa n/a nja n/a 6.44 Oa n/a nja n/a 6,44 n/a n/a nja n/a 6.44 n/a n/a nits nfa 6.44 n/a n/a rid/a nja 6.44 n/a n/a n/a nfa 6.44 n/a n/a n/a nfa 6.44 n/a n/a nja nfa 6.44 n/a n/a nja nja 6.44 n/a n/a nja n/a 6.44 n/a n/a n/a nja 6.44 Oa n/a n/a nja 6.44 n/a n/a n/a n/a 6.44 Oa n/a n/a n/a 6.44 Oa n/a n/a n/a 6.44 Oa n/a n/a n/a 6.44 1+ Worksheet for Emergency Overflow Weir Project Description Solve For Headwater Elevation Input Data Discharge Crest Elevation Tailuvater Elevation Weir Coefficient Crest Length 14.59 ft3ls 4645.80 ft 4644.00 ft 3.37 us 20.00 ft Results Headwater Elevation Headwater Height Above Crest Tailwater Height Above Crest Equal Side Slopes Flow Area Velocity Wetted Perimeter Top Width 4646.16 ft 4.33 -1.80 ft 0.25 ft/ft (H:V) 7.25 ft2 2.01 ftls 20.74 ft 20.18 ft in Bentley Systems, Inc. Haestad Methods SoBreiitteg+E rMaster V8i (SELECTseries 1) [08.11.01.03] 11/2012018 9:48:38 AM 27 iernons Company► Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 1 of 1 Culvert Calculator Report Pond Outlet Culvert Solve For: Headwater Elevation Culvert Summary Allowable H At Elevation Computed Headwater Elevation Inlet Control HW Elev. Outlet Control HW Elev. 4,645.80 ft 4,645.69 ft 4,645.50 ft 4,645.69 ft Headwater Depth/Height Discharge Tailwater Elevation Control Type 1.19 1.43 cfs 4,645.50 ft Outlet Control Grades Upstream Invert Length 4,644.50 ft 20.00 ft Downstream Invert Constructed Slope 4,644.49 ft 0.000500 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstream PressureProfile N/A N/A 1.82 ft/s Depth, Downstream Normal Depth Critical Depth Critical Slope 1.01 ft N/A ft 0.51 ft 0.021044 ft/ft Section Section Shape Section Material Section Size Number Sections Circular CMP 12 inch 1 Mannings Coefficient Span Rise 0.024 1.00 ft 1.00 ft Outlet Control Properties Outlet Control HW Elev. Ke 4,645.69 ft 0.50 Upstream Velocity Head Entrance Loss 0.05 ft 0.03 ft Inlet Control Properties Inlet Control HW Elev. Inlet Type K M C Y 4,645.50 ft Headwall 0.00780 2.00000 0.03790 0.69000 Flow Control Area Full ADS 5 Chart ADS 5 Scale Equation Form Unsubmerged 0.8 ft2 2 I I s:\...\hydraulicslpond outlet pipe velocity.cvm Samuel Engip_rg - ENGLEWOOD 11/20/18 09:51:05 ANC, Bentley Systems, Inc. Haestad Methods Solution tenter Watertown, CT 06795 USA Project Engineer: mcloud CulvertMaster v3.3 [03.03.00.04] +1-203-7554666 Page 1 Appendix I: Culvert Design Culvert Calculator Report Culvert Solve For: Headwater Elevation Culvert Summary Allowable HW Elevation Computed Headwater Elevation Inlet Control HW Elev. Outlet Control HW Elev. 4,647.25 ft 4,645.88 ft 4,645/6 ft 4,645.88 ft Headwater Depth/Height Discharge Tailwater Elevation Control Type 0.98 3.49 cfs 4,644.65 ft Outlet Control Grades Upstream Invert Length 4,61 11.90 ft 35.00 ft Downstream Invert Constructed Slope 4,644.65 ft 0.007143 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstrea m M2 Mild Subcritical 3.84 ft/s Depth, Downstream Normal Depth Critical Depth Critical Slope 0.56 ft 0.91 ft 0.56 ft 0.022236 ft/ft Section Section Shape Section Material Section Size Number Sections Circular CMP 12 inch 2 Mannings Coefficient Span Rise 0.024 1.00 ft 1.00 ft Outlet Control Properties Outlet Control HW Elev. Ke 4,645.88 ft 0.70 Upstream Velocity Head Entrance Loss 0.10 ft 0.07 ft Inlet Control Properties Inlet Control HW Elev. Inlet Type K M C Y 4,645.76 ft Mitered to slope 0.02100 1.33000 0.04630 0.75000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Unsubmerged 1.6 ft2 2 2 1 s:\...\drainage\hydraulics\auburn cu lve rts.cvm 11/20/18 02:03:46 MD Bentley Systems, Inc. Project Engineer: mcloud Samuel Engineering - ENGLEWOOD CulvertMaster v3.3 [03.03.00.04] Haestad Methods Solution Center Watertown, CT 06795 USA +1-203-755-1666 Page 1 1-2 Culvert Calculator Report Culvert 2 Solve For: Headwater Elevation Culvert Summary Allowable HW Elevation Computed Headwater Elevation Inlet Control HW Elev. Outlet Control HW Elev. 4,647.65 ft 4,646.60 ft 4,646A4 ft 4,646.60 ft Headwater Depth/Height Discharge Tailwater Elevation Control Type 1.70 5.69 cfs 4,644.65 ft Outlet Control Grades Upstream Invert Length 4,61 11.90 ft 35.00 ft Downstream Invert Constructed Slope 4,644.65 ft 0.007143 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstrea m Com positeM2P ressu reProfi le Mild Subcritical 4.68 ft/s Depth, Downstream Normal Depth Critical Depth Critical Slope 0.72 ft N/A ft 0.72 ft 0.028526 ft/ft Section Section Shape Section Material Section Size Number Sections Circular CMP 12 inch 2 Mannings Coefficient Span Rise 0.024 1.00 ft 1.00 ft Outlet Control Properties Outlet Control HW Elev. Ke 4,646.60 ft 0.70 Upstream Velocity Head Entrance Loss 0.20 ft 0.14 ft Inlet Control Properties Inlet Control HW Elev. Inlet Type K M C Y 4,646A4 ft Mitered to slope 0.02100 1.33000 0.04630 0.75000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Transition 1.6 ft2 2 2 1 s:\...\drainage\hydraulics\auburn cu lve rts.cvm 11/20/18 02:03:46 PFV Bentley Systems, Inc. Samuel Engineering - ENGLEWOOD Haestad Methods Solution Center Watertown, CT 06795 USA Project Engineer: rncloud CulvertMaster v3.3 [03.03.00.04] +1-203-755-1666 Page 2 1-3 Culvert Calculator Report Culvert 3 Solve For: Headwater Elevation Culvert Summary Allowable HW Elevation Computed Headwater Elevation Inlet Control HW Elev. Outlet Control HW Elev. 4,646.62 ft 4,649.09 ft 4,64738 ft 4,649.09 ft Headwater Depth/Height Discharge Tailwater Elevation Control Type 4.69 10.89 cfs 4,644.30 ft Outlet Control Grades Upstream Invert Length 4,61 11.40 ft 32.00 ft Downstream Invert Constructed Slope 4,644.30 ft 0.003125 ft/ft Hydraulic Profile Profile Slope Type Flow Regime Velocity Downstrea m Com positeM2P ressu reProfi le Mild Subcritical 7A2 ft/s Depth, Downstream Normal Depth Critical Depth Critical Slope 0.94 ft N/A ft 0.94 ft 0.068804 ft/ft Section Section Shape Section Material Section Size Number Sections Circular CMP 12 inch 2 Mannings Coefficient Span Rise 0.024 1.00 ft 1.00 ft Outlet Control Properties Outlet Control HW Elev. Ke 4,649.09 ft 0.70 Upstream Velocity Head Entrance Loss 0.75 ft 0.52 ft Inlet Control Properties Inlet Control HW Elev. Inlet Type K M C Y 4,647.38 ft Mitered to slope 0.02100 1.33000 0.04630 0.75000 Flow Control Area Full HDS 5 Chart HDS 5 Scale Equation Form Submerged 1.6 ft2 2 2 1 s:\...\drainage\hydraulics\auburn cu lve rts.cvm 11/20/18 02:03:46 MD Bentley Systems, Inc. Project Engineer: mcloud Samuel Engineering - ENGLEWOOD CulvertMaster v3.3 [03.03.00.04] Haestad Methods Solution Center Watertown, CT 06795 USA +1-203-755-1666 Page 3 1-4 Appendix J: Construction Drawings 1 2 S _ Y '- 1 V L r• ' L ti Fd v tg Zia 7: L 6'r I s I C I D I E 1 r 1 G 1 H , r { r B. ,4 N. lti �k�� r r r el r — — — _ _—_ — r — — NOTES L. 1 4- ~ t — I�r i " . +'•' X X x x ` 11 - ` 1. 1 r {Ill Jlkf •'•;nikf ..,.P 'r•41': f rk::r •)pnSm 1!1 I%::PR.Ih M14r r r ITh .R•1 P4T l�1ARTt:.r :r.1.:R.:.-::L!.r.:aIPc R::R-1.R4.:r YyWr. 1tI'IRIR::IN.I NrRIrIY wnr r:,.U1Y. 5ERT Er •.., 1 - I SIIREriiiP8Y1dN IINP I Q%151IRQ ■4RRn Fria 1 f ! BiRP 1 1r rNISU NC. •�iQL'Rnl P IrK::r GIR.G VfrVeer-. l r :. U_.:9 S ... . L'LR111L PP f _ . 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T 3 1 ii* I j'T� i� •• I NRCS WEB SOIL SURVEY DATA i I _, Pt +y 11 M lid M DIE M hBIhL M M I ii 14 hI M I I 'I I IP f — ice #" �' - f. *I.�i '� _rte` II I MP qAC !:'HII::I H4` :Mu hAM n• f.AiC::I:: !:::n r,A::ur RA1hr 6 S * V S V .*i .551'• NMI f - Q 1 SI?''4k I::FH::-6-Ib kl:.-M':::' li ri ( • f /• N I trite PR ,r/ ree f / �S4 ' Qp ��" rrrf-- I y FIJC:IIli ARCF{Jlfk':.::A41r11• :1N6'R AWN ri -I :1: --_--� _--_ fF::SRi`::IY I::FH Gifi(r$. I - -- /+y'�F a` � i; G::S-IA I I f, ,' ell V Jar I c huhH ;a Se ^AH ::ih•Iti 5P[;rr!:; h Cr•h5:•} T7 .J i I ,r ger .- Pla-r r —fir - + + Irremil-wmPrir f re'r� .- f r •+ - ere fir. e I I -f tij r s f . -- rJ Jam. k rig .3443.5 Jam, sue• 'rF~ ._..-e. ■1 _.--r f � - J� s I NORTH o' , C0'rov OW G' •,� DRAINAGE BASIN SUMMARY RAUh Cr',t r rA IC CFhbti r71:R zir f11AC1R.: gtr4 R'S; rT.R I ' 1:II „r:'IF J.':.; IHrTR VI i:11I: ARM ti; NS IR ::K' Irh. h:17 I F 7M1A::01:1:'Rr '%; Iowa IIWJDTr CDln'LCIU T C., me -vu PLLROT COO e- is JR-YR PRAM nova AT RATE (ern 'Q:0 11671 MAN W RAT! C now CMS)A Q.,I Hc.l FR. I F/Vn rIY.Rk BI{r cA v, rr•1'!'1(h r::rf. A:: C :A.9 Y'' a5: A .-'Y ;al ^.:A 1485 8 11 C.. P..:a - (4•FR.I FR•I I! HC 1,:•'b Fr AC n....:r R IIAir'rt-I .1.!.%C •!• ' :M :'1^ LAL - PR-; rR2 ULM/11.:PrI: ream -RIIrcite -c: ::111 Vrr? • r .. YU ': :: :a I5 a.°4 1.24 I:'rN I IwMOQt III -I :_:;111 I vrR-I; <MI ore, I re;rtICr RANK FR.1,RIAIrr4R»C..:uI ore 1 I -II C t,. ‘r., 5.:,:r. 5.c., :as^• p.!a kale `'.:M T i fR I :Miler is ::111Vre5 Pi:ItY ICcr PICIkv PR -I TRIRIIniR.'{iC•111Vrr' IAl C C: '2? .:i:er 4J :545 Ids S34 '-: Ei��iii ••'-L.•e'r'u. CH heron nods •••••.--.,‘.....4.•-• '..' r' •` ' ,..1c. ' •' r 4'• -Au ,-.4%. n• � i J • ' ""O"..:I. v.. •- -•r I --•.--•.-- �.•a1 '..•. I'- IX' W. '.•'.a ROCKY MCYJNIA:N 2 MIC•SIRL4M LLC WJfl j 'p75 _J! Ii 11Ja'J .-Q__• . ; .1_—•.---,-•c-- ALLL CC)UNC 7, CO �� TILE I CIECI NLMEER ..a., ... H J ::D! I I I }q, AUIJUKCk CUMMRLSSUK SW 'XV 5.11LLIAr.1u L'LJ SAbIl I. IELUCUk4F+RES;SILT: 'r L -L UL:'LLLY'LU UKaarti'-alas uas:N MAP' 18294 .tr'• H..:I :omit: I t. -19.7P 11• '• iJRCL1r rah NIA''EE(t HI'.. MIN A ISSUED RiH Mee 11!311IS MT;: • r••.•v H. Wrist I I Ih 1I!• Engineering SamuelWA. n b. . wa 1.:.- F•.Lc•e-•rr :: i. .•1:•••1•v.1 ns• v 'i4 ti '�a • .• F••' e I- vs'. At ••.R• ACS -CE -611 •� REd'5'GN F. .�"r a..:v 1•'...:1: -.<�.:: v1::: REFERENCE CRACV CNCS RE •I'E'CN5 A 1- 1 H J-5 DRAINAGE REPORT REVIEW CHECKLIST ❑Variance request, if applicable Description/Scope of Work Number of acres for the site El Methodologies used for drainage report & analysis Design Parameters Design storm IZ Release rate RBANIZI'N or NON -URBANIZING Overall post construction site imperviousness Soils types ❑ Discuss how the offsite drainage is being routed — See Number 1 Below 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 X x Drawings stamped by PE, (scanned electronic PDF preferred) Drainage facilities ors Outlet details 71Spillway lway Maintenance Plan Frequency of onsite inspections Repairs, if needed Cleaning of sediment and debris from drainage facilities Vegetation maintenance Include manufacturer maintenance specifications, if applicable Comments: 1. The report mentions that Culvert 3 is designed for the 10 year storm and that the 100 year storm will spread out rather than overtop the road (Page 5). Please clarify how this was determined. The concern is that in the 100 year storm, if the roadway overtops, the access to the site may be blocked, preventing emergency personnel from accessing the site. 2. Clarification — Page 1 indicates that there are existing irrigation ditch features on the west and east edges of the lease site. Please explain where these features are and what the features are. We need to ensure that no unaccepted flows are going into irrigation ditches, per the UDFCD standards. X xl x Project Name: USR18-0129 Rocky Mountain Midstream Auburn Compressor Station 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 ( of = complete, ❑ = required) Stamped by PE, scanned electronic PDF acceptable certification of Compliance x x ,112 X xl 4/11/2018 Weld County Department of Public Worksl Development Review 1111 H Street, Greeley, CO 80631 P h : 970-400-3750 Fax: 970-304-6497 www.vreldgov.comldepartments/publicworks/development review/ ,' I DRAINAGE REPORT REVIEW CHECKLIST 3. Drawing CE -602 — Detail C states that the top of the spillways elevation is 4645.85 and the report indicates that the spillway elevation is 4645.80; please correct if this is inaccurate. The table under detail 2 is very fuzzy in the submitted drawings. 4. Once the revised design and drainage report have been submitted, the County may provide additional comments in addition to the ones listed above. Depending on the complexity of the changes made, a full 28 -day review period may be required. 5. Please provide a written response on how the above comments have been addressed when resubmitting the drainage report. Thank -you. 4/11/2018 Weld County Department of Public works) Development Review 1111 H Street, Greeley, CO 80631 P h : 970-400-3750 Fax: 970-304-6497 www.vreldgov.comldepartments/publicworks/development review/ Rocky Mountain Miistream, LLC Unoccupied Compression/Treating Station General Decommissioning Plan Preamble Rocky Mountain Midstream, LLC is committed to minimizing impacts from current and future operations, In the development standards for unoccupied compressor stations, the Weld, Adams, a n d Arapahoe County Boards of Commissioners require an orderly decommissioning of a facility. Such decision to decommission is only expected in the event long-term sustained site operations cease economic viability, as determined by the operating Company. Where a development standard states the following: "The applicant shall maintain compliance with the approved Decommissioning Plan." The operating Company has developed this amended Decommissioning Plan to achieve such compliance through a combination of applicable equipment and structure removal, engineering measures, and site reclamation procedures specified by the COG. --C-90 Vv4illiarns.Document Document #: Revision #: 1.2 Revision Date: 11/15/2018 Name: Decommissioning Plan Location: Rocky Mountain Midstream Compressor Station (unoccupied} TABLE OF CONTENTS Title Page 1 Table of Contents 2 Purpose 3 Scope 3 Definitions 3 Responsibility 3 Guidelines 3 Document Management Log Page 2 of 4 Document #: Revision #: 111 Revision Date: 11/15/2018 Wi/hartis.Document Name: Decommissioning Plan Location: Rocky Mountain Midstream Compressor Station (unoccupied) Purpose Satisfy the Condition of Approval addendum to County Use/Permit by Special Review (USR/CUP) requiring County review and approval of any/all unoccupied compression and/or treating facility Decommissioning Plan. Scope Upon review and approval, this document identifies the minimum acceptable conditions for complying with the referenced Development Standards developed as part of the County USR/CUP process. Definitions Company shall mean Rocky Mountain Midstream, LLC, the local operating company of Williams, their affiliates or successors. Decommissioning shall mean the removal of an obsolete facility or site from active service and the return of land conditions to a reclaimed state. Site Reclamation shall mean soil stabilization in such a manner as to minimize erosion of disturbed areas to the extent practicable, including but not limited to such disturbed areas being built -on, compacted, covered, paved, or provided more than 80% native vegetative cover. Responsibility The Company's Vice President of Operations will have the overall responsibility for ensuring plan implementation following the Company's decision for complete facility Decommissioning. Guidelines 1.0 Company Decommissioning Plan • The Company will ensure aboveground piping and equipment are depressurized, purged, drained and removed from the site. • The Company will ensure below grade piping and utilities will be drained, purged, capped and abandoned in place. • The Company will ensure aboveground structures and buildings are removed from the site. • The Company will ensure concrete foundations and screw piles that protrude above ground are cut to grade level and abandoned in place • The Company will ensure paved sidewalks, roads, and secondary containments are removed from the site. • The Company will ensure fuels, lubricants, chemicals, and wastes are removed from the site for reuse, recycling, or disposal by a licensed contractor. The Company will ensure electrical systems are de -energized; and above grade electrical equipment, panels, wiring, and conduit are removed from the site. • The Company will ensure below grade electrical conduits and duct banks are capped and abandoned in place. • The Company will ensure Site Reclamation through the re-establishment of vegetation using native grasses in accordance with local and/or State guidelines. Page 3of4 --C-90 Vv4illiarns.Document Document #: Revision #: 1.2 Revision Date: 11/15/2018 Name: Decommissioning Plan Location: Rocky Mountain Midstream Compressor Station (unoccupied} Document Management Log AUTHORS This document was prepared by: Name Matthew C. Norton Title HSE Compliance Supervisor Asset Phone Email VERSION HISTORY/ CHANGE LOG REVISION RECORD APPROVAL SIGNATURES Version Date Version o. Description of Change I Remarks Revising Name of Part y Approver Signature draft Initial Draft and Review N/A N/A 07/041201 8 1.o Incorporate application final edits submittal for M Norton deLt e x/kAwat_ 09/10/2018 1.1 Make applicable to USR & CUP M Norton 11/15/2018 1.2 Ownership, formatting updates. position titles, header � Kinnin n i n • r l l <I Page 4 of 4 Rocky Mountain Midstream, LLC Unoccupied Compression/Treating Station Stakeholder Communication Plan Williams ithiciali Document #: Revision #: I Li Revision Date: 11/15/2018 Document Name: Stakeholder Communication Plan Location: Rocky Mountain Midstream Compressor Station (unoccupied} TABLE OF CONTENTS Title Page 1 Table of Contents 2 Purpose 3 Scope 3 Definitions.. 3 Responsibility 3 Guidelines 3 Document Management Log . 5 Page 2 of 5 al Williams1. isicrestrotooterer Document #: Revision #: 1.1 Revision Date: 11/15/2018 Document Name: Stakeholder Communication Plan Location: Rocky Mountain Midstream Compressor Station (unoccupied) P urpose Ensure the dissemination of information to stakeholders through periodic communication with neighbors, tenants, property owners, Homeowners Association(s) located near company facilities subject to Special Approvals, Covenants, or Land Use Agreements. S cope This document details the methods, types and frequency of communications to affected stakeholders receiving ernails about facility -specific activities. Definitions company shall mean Rocky Mountain Midstream, LLC, the local operating company of Williams, its affiliates or successors. Stakeholders shall mean any adult tenants, property owner, or member of a registered Homeowner's and/or Neighborhood Association immediately adjacent to an above -ground company facility boundary, fence, or property line. Responsibility The Company's Community Engagement Manager will have the overall responsibility for ensuring that this plan is implemented. Guidelines 1,0 Methods of Communication The Company will maintain an email address to facilitate the communication of useful and timely information. The email address is CSStakeholdersawilliams.com, and will function as a distribution list monitored by Company -designated personnel. To receive notifications or announcements regarding relevant facility information, stakeholders will submit the following information annually via the email address above: o First Name, Last Name o Physical Mailing Address o Contact Phone Number o Stakeholder Email Address • To cease receiving future communications from the company regarding facility information, subscribers send an opt -out request to Rocky Mountain Midstream. On receipt of such a request, the subscriber will be removed from future communications. Failure to annually submit or resubmit the information above will also serve as an opt - out request. Information Types and Minimum Communication Frequency • The following routine information may be communicated to stakeholders: o Planned activities such as facility -wide shutdowns or emergency drills, o Major maintenance activities requiring power outages or road blockages, Page 3 of 5 al Williams1. iiicrestrotivoisrer Document #: Revision #: 1.1 Revision Date: 11/15/2018 Document Name: Stakeholder Communication Plan Location: Rocky Mountain Midstream Compressor Station (unoccupied) • In the event of an Incident or emergency requiring on -site support from Emergency Response personnel, the following information will be communicated to stakeholders following the departure of Emergency Services Personnel: o Date and time of emergency response o Nature or description of emergency response Duration of emergency response Date and time of restoration of normal operations • In the event general or specific questions are received via the subscription email address, an individual email response will be sent within 3 to 5 business days of receipt. General or specific questions, and answers to such questions may be periodically published to all Stakeholders. • Every effort will be made to provide responses to general or specific questions in a timely manner, however, responses will not be sent to communications received which contain any of the following: Vulgar, rude, or threatening language Obscene imagery or images Inappropriate file attachments suspicious links Page 4 of 5 al Williams1. Document #: Revision #: 1.1 Revision Date: 11/15/2018 Document Name: Stakeholder Communication Plan Location: Rocky Mountain Midstream Compressor Station (unoccupied) Document Management Log AUTHORS This document was prepared by: Name Matthew . Norton HSE Compliance Supervisor Title Asset Phone Email VERSION HISTORY I CHANGE LOG REVISION RECORD APPROVAL SIGNATURES Version Date it n ersic►n No. Description of Change g / Remarks Revising Name of Party Ap prover Signature draft Initial Draft and Review N/A N/A 07/04/201 8 1 .o Incorporate application final submiftal edits for M Norton -rhite, 11 /2018 1.1 Ownership, formatting updates. position titles, header J Kinnin n n i n Page 5 of 5 Rocky Mountain Miostream, LLC Unoccupied Compression/Treating Station Noise Mitisation Plan Preamble Rocky Mountain Midstream, LLC is committed to minimizing sound impacts from current and future operations. In the development standards for unoccupied discovery compressor stations, the Weld County Board of Commissioners imposed a residential sound limit on the facility, to be measured at the property boundaries. This sound limit is based on current zoning for the development area. Changes to applicable zoning and sound limits associated with land use designations require approval by Weld County. Typical Development Standard language states: "The facility shall adhere to the maximum permissible noise levels allowed in the applicable Zone District as delineated in Section 25-12-103, C.R.S., and comply with the Noise Mitigation Plan, as approved." The operating Company has developed this sound mitigation plan that will achieve such sound standards through a combination of equipment and engineering measures. �, Ca -------.0 isms. latigopoodrstor Document #: Revision ##: Li Revision Date: 11/15/2018 Document Name: Noise Mitigation and Compliance Plan Location: Rocky Mountain Midstream Compressor Station (unoccupied} TABLE OF CONTENTS Title Page 1 Table of Contents 2 Purpose 3 Scope 3 Definitions 3 Responsibility 3 Guidelines 3 Document Management Log ! Viiliiams. '' er Document #: Revision #: 1.1 Revision Date: 11/15/2018 Document Name: Noise Mitigation and Compliance Plan Location: Rocky Mountain Midstream Compressor Station (unoccupied) P u rp se Satisfy the Condition of Approval addendum to Weld County Use by Special Review (USR) requiring County review and approval of an unoccupied compressor station Noise Mitigation and Compliance Plan. S cope U pon review and approval, this document identifies the minimum acceptable conditions for complying with the referenced Development Standards developed as part of the Weld County USR process. Definitions Company shall mean Rocky Mountain Midstream, LLC, the local operating company of Williams, its affiliates or successors. Noise Level Limits shall mean the maximum noise level limits referenced in applicable USR Development Standard, and applicable to the facility based on the zoning. Pre-existing Non-compliance Location shall mean any on -site location identified and tested by the Company, prior to the commencement of site construction or facility operation, and documented to be in non-conformance or out of compliance with the existing Noise Level Limits. Stakeholders shall mean any adult tenants, property owner, or member of a registered Homeowner's and/or Neighborhood Association immediately adjacent to an above -ground Company facility boundary, fence, or property line. Responsibility The Company's Operations Manager and Facility Supervisor will have the overall responsibility for ensuring that this plan is implemented. Guidelines. 1.0 Company Duty to Comply Per C.R.S Section 25-12-103, and referenced by applicable USR Development Standard language, based on facility zoning; • The Company will comply with applicable Noise Level Limits for site construction until such time as normal facility operation commences. • Between the hours of 9:00 p.m. and 7:00 a.m., the Noise Level Limits shall not be exceeded by more than ten (10) decibels for no more than fifteen (15) minutes in any one -hour period. • Following new facility commissioning, but not later than twelve (12) months after startup, the Company will commence initial sound level testing to monitor compliance with permissible Noise Level Limits. • Following initial sound level testing, the Company will commission sound level testing to be performed annually, but not to exceed 15 months, to monitor compliance with permissible Noise Level Limits. ! Viiliiams. '' Document #: Revision #: 1.1 Revision Date: 11/15/2018 Document Name: Noise Mitigation and Compliance Plan Location: Rocky Mountain Midstream Compressor Station (unoccupied) • To ensure consistency, Noise Level testing will, at a minimum, include previously tested on -site locations for which data was collected. Annual Noise Level Limit testing will take place for 72 consecutive hours during normal site operations, and be performed by an appropriately qualified 3' party consultant experienced in environmental noise control. The annual sound level survey commissioned by the Company will be prepared by a qualified acoustical consulting firm having at least five years of experiences in noise control engineering and environmental noise analysis. • The annual sound level survey commissioned by the Company shall employ Type -1 sound level meters to be calibrated prior to and immediately after use in accordance with American National Standards Institute (ANSI) S1.40. All sound level meters will be programmed to record A -weighted, Leg sound levels. The sound level meters are to be deployed at a measurement height of 4 ft. above ground and employ the use of windscreens in accordance with ANSI S12.9. The sound level meters are to be deployed at locations in accordance with Section 14-9.50, A.2 of the Weld County Noise Limits. Except for excursions associated with documented Pre-existing Non-compliance Locations, the Company will identify and undertake corrective or mitigating action(s) in the event that a determination is made that the applicable facility is in violation of the reference noise levels. In the event of a documented noise complaint from a Stakeholder, the Company will coordinate with appropriate County personnel to conduct appropriate sound level surveys and/or investigative measures. � Viiiiiains. lawiirdieegeorigior Document #: Revision ##: Li Revision Date: 11/15/2018 Document Name: Noise Mitigation and Compliance Plan Location: Rocky Mountain Midstream Compressor Station (unoccupied} Document Management Log AUTHORS This document was prepared by: Name Matthew D. Norton HSE Compliance Supervisor Title Asset Phone Email VERSION HISTORY / CHANGE LOG REVISION RECORD APPROVAL SIGNATURES Version Date Version No. Description of Change I Remarks Rev. Name of . Party Approver Signature draft Initial. Draft and Review N/A N/A 07/04/2018 1.0 Incorporate application final edits for submittal M Norton -414/ 0- APht_ 11/15/2018 1.1 Ownership, formatting updates. position titles, header j Kinnin irsia&I II f Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2— Incident Reporting and Management 44 1SOOVO Emergency sp ns all Page 1 of 43 ola0,4 r . , ril:Jr 4)1-4 0 Document #: 2.2 Revision U: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2— Incident Reporting and Management . TABLE OF CONTENTS Purpose of Plan 3 DJ Asset Information... r ......... 5 Incident Response Incident Command System 8 Responsibilities 10 Training Requirements of Emergency Responders r...12 Drills and Exercises for Emergencies 13 Drill/Exercise After Action Report..... r . r r 14 Media Relations Support Plan , 15 Incident Reporting 17 Incident Response 19 Specific Scenario Response20 Appendix A - Emergency Contact List . 36 Appendix B - Discovery Gas Plant Muster Area Map 37 Appendix C — Discovery CDP Muster Area Map . 38 Appendix D — Accident Analysis -Report Example 39 Appendix E — Post Injury Treatment Authorization for Preferred Provider Form Example 42 Appendix. F — Employees Notice of Injury Form Example43 Page 2 of 43 Dlisrd i, gm,r . + .1-1_15::� z....:5 ► �, ,k Document #: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location. Section 2 — Incident Reporting and Management Purpose of Plan The purpose of this Discovery emergency response plan is to establish procedures and responsibilities to all foreseeable emergencies that may occur at Discovery Midstream DJ assets. An emergency is defined as any situation presenting a threat to human life, physical well-being, and company or personal property. The main objectives in any emergency response will be as follows (listed by order of importance): • Protection of personnel and the public • Protection of the environment • Compliance with federal, state, and local laws and regulations • Adhering to safety protocols • Restore normal operating conditions Discovery Midstream works to prevent emergency situations from occurring by implementing and adhering to a culture which values safety and by meeting and exceeding industry best safety practices. Examples include: • Use of all —steel pipe manufactured in the USA. for Discovery oil and gas lines • Pipelines buried further underground than standard three (3) feet • Use of thicker, stronger, higher grade pipe than required by standard best practice • Adherence to strict welding standards and 100% X -Ray of all welds • Integration of a rigorous pipeline integrity management program This plan is supported by the Discovery Midstream Leadership team. The plan furnishes adequate emergency protection and provides training for the employees, contractors, and visitors at the facility. This plan applies to all employees, contract employees, guests and visitors to the facility during normal office hours, unless otherwise noted below: • Employees working outside normal hours will be responsible for carrying out the appropriate actions of this plan. Pre -Planning During pre -planning it is important to remember that no two emergency incidents are alike. Look at all the possibilities surrounding the emergency. This includes the size of the event, community and environmental impact, and the possibility of several types of emergencies which could occur at the same time. Page 3 of 43 _., i, . r Exibcrd4 •4� z,...:s ► �. Document #: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management Site or Area -Specific Planning Measures For all area operations and project work, including testing, construction, commissioning, or maintenance activities, Discovery Midstream personnel will, at a minimum and as applicable to the activities being conducted, initiate a review of the following planning measures: • Clarify project / operational parameters / hazard identification; ication; • Conduct risk assessments and implement prevention measures as an integral part of company operations, where appropriate; • Identify the residual risk of the operation, and potential emergency scenarios that could happen; • Procure or contract resources to respond effectively to emergencies; • Meet with stakeholders (i.e.: government agencies, residents/landowners, emergency agencies) as required, to discuss emergency planning; • Compile and distribute site -specific emergency response information for the project or production operation to key stakeholders; • Prepare Site Safety / Evacuation Plan(s) for key job sites (i.e. Gas Plants, Occupied Compressor Stations, etc.); • Ensure company personnel and contractors attend emergency response plan review meetings before major facility modifications are commissioned; • Engage corporate support, as required, to ensure emergency support plans address risks and communications specific to the activities; and • Ensure that plans are compliant with applicable government regulation and, if required, registered and/or approved by regulatory agencies. Plan Administration Discovery Midstream personnel are responsible for the development, review and administration of all components of the plan. The administration of Emergency Response Plans and Programs involves the following processes: • Distribution: Copies of programs and plans should be accessible to all Discovery Midstream personnel and agencies assigned responsibilities under the program or plan. • Updating: Programs and plans should be reviewed and updated at a minimum once a year (or more frequently as required) to include regulatory changes, organizational and personnel adjustments, identified operational hazards and recommendations resulting from exercises or real incidents. • Approval: Where required, programs and plans should be submitted for regulatory review and approval to the government entity having jurisdiction. Page 4 of 43 1.14 All Iii MIS r . , abt $4) 'We i Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2— Incident Reporting P � and Management � DJ Asset Information Emergency Planning & Response The Fort Lupton Gas Plant, compressor stations and gathering system have various interlocks, relief valves, and alarms which function to alert personnel and/or protect equipment against process conditions exceeding design parameters. Many of these process safeguards are critical equipment subject to regular testing and preventative maintenance as defined in facility mechanical integrity program. The safeguards prevent emergency conditions from occurring. The Discovery Midstream Gas Plant and compressor stations also have equipment and systems available for personnel to actively respond to an emergency condition. These include: • Facility Emergency Shutdown System (ESD) • Portable Fire Extinguishers placed at required intervals • Fixed Gas Detectors with equipment shutdown capabilities • First Aid Station • Portable Gas Detectors • Smoke Detectors in occupied buildings Discovery Midstream personnel are trained in the use of each to the extent required by authorities having jurisdiction and manufacturer's recommendations. Accountability of Personnel Facility operatorwill conduct accountability of personnel at muster areas utilizing facility sign -in sheet. Equipment Shutdown Operations Department will be responsible for shutting down procedures. Incident Communication - Radio Use Two (2) -way radios will be utilized as the primary communication devices in the event of an incident. Cellular (cell) phones will be utilized in the event radios are not transmitting/receiving communications. Location of Discovery Operation Center (DOC) The Discovery Operation Center is located at 4501 Weld County Road 35 Fort Lupton, CO 80621. Ideally, the Operations Center should be equipped with a radio base, several phone lines, and be centrally located for personnel to be dispatched from. Incident Response Page 5 of 43 Eira16541 zil.1%1 1 IF Document #: 2.2 Revision U: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2— Incident Reporting and Management 411 ei ,4 rtraki..4 ft i-s4t Incident Levels Discovery Midstream incorporates three incident levels as part of the "Incident Notification Procedure, " (ref . Document 2.1, Incident Notification.) The Incident Notification Procedure assures an incident is promptly addressed at appropriate level to provide resources and support to control and mitigate incident. Implementation of a three tier system helps ensure notification of State and Federal agencies (as applicable), while enabling Discovery Midstream to evaluate impact of incident on employees, general public, and customers. In order to properly respond to any emergency, incidents should be classified into one of three levels. The incident level is determined by complexity of the incident, risks to company personnel and public, and impact on the environment. The three level classifications will be used and communicated to all personnel within the company. Level l Incident The most serious and highest level incident. Level 1 incidents are usually on going and typically involve at least one of the following: a. Any fatality b. Event requires support of government or Emergency Responder agencies c. A non -incipient fire, rupture or explosion involving a Discovery Facility that requires assistance from Emergency Responders d. Any media attention at a Discovery Incident e. Results in more than $100,000 in estimated Property damage *A Level 1 Incident will automatically activate the Corporate Emergency Support Team and Emergency Operations Center. Notification Protocol: a. Immediately notify local Supervision, Discovery Operations Center (DOC), Director of Operations, COO b. Discovery Operations Center (DOC) will activate Discovery local First Responder(s) and local city/county fire/emergency organization if needed. c. Discovery Operations Center (DOC) will telephone local city/county officials, landowners and/or local citizens if off -site impact. d. Discovery Operations Center (DOC) will communicate (text, email or phone call) all Corporate Personnel as appropriate. Level 2 In ciden t Page 6 of 43 Dlisrd i, :ht.. rir !- ._L4 I :1 ;44z,... al I, I; ,k Document #: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management An event of moderate impact, usually controllable from the scene. Level 2 incidents may be ongoing and typically involve at least one of the following: a. Any Discovery spill/release from a Discovery pipeline or facility b. Any land slip or "frac out" that impacts a water way or has the potential to impact a water way c. Estimated damage or penalties in excess of $50,000 but less than $100,000 d. An incipient fire involving injury or damage to Discovery Facilities e. Emergency Responder attention f. Motor Vehicle Accident ("MVA") with employee or third party injuries g. A security risk that poses a threat to the Company or the Public Notification Protocol: a. Notify local Supervision, Discovery Operations Center (DOC), and local Safety/Environmental Representatives. b. Discovery Operations Center (DOC) will telephone local fire/emergency organization(s) if needed and complete preliminary incident report (PIR) in the ISR. c. Discovery Operations Center (DOC), Local Manager or Designee will communicate (text, email or phone call) to all personnel as appropriate. Level 3 Incident Relatively minor event involving one of the following characteristics: a. Injury/Illness that requires onsite or offsite First Aid Treatment b. "Good Catch" Reporting c. Land slips that do not affect water ways or have the potential to affect water ways. d. Estimated property damage is not expected to exceed $50,000 e. No media or emergency responder attention f. Event that significantly disrupts operations or deliveries (commercial business impact only) g. Near Miss Reporting h. MVA with no employee or third party injuries Notification Protocol: a. Notify local Supervision b. Local Manager or Designee will communicate (text, email or phone call) to all personnel as appropriate. Incident Command System Discovery Midstream follows an Incident Command System (ICS) structure when responding to any incident. While most incidents are small enough that only limited incident command will be required, larger incidents may require a full-scale ICS. The ICS is designed to enable effective and efficient incident management by: Page 7 of 43 r LI DI --...„ re et , q vii Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: tion: Section 2— Incident Reporting and Management ,....r „di • Integrating a combination of facilities, equipment, personnel, etc. within a common organizational structure • Enabling response measures to be scaled according to nature and size of incident • Involving only those functions required for level of response (i.e. operations, finance, public relations) • Allowing one person to take charge of incident for the company and determine size of response required • Merging into and working with ICS of responding agencies (most governmental agencies use an ICS) Discovery ICS matrices for Level 1, Level 2, and Level 3 incidents are provided. The formats are for full-scale ICS, while normally only a portion of the ICS will be required. For Level 1 and Level 2 incidents, personnel will assume responsibility for primary duties in ICS. One person may assume various or all responsibilities for Level 3 incidents. The ICS structure is meant to be flexible. The Incident Commander is responsible for establishing the size and strength of the team. Primary jobs are: • Incident Commander • Director of Operations (Incident Response Leader) • Operations Lead (Logistics - Calls contractors and field assistance) • Manager of Engineering (Planning - Decides on response strategies/schedules events) • Chief Operating Officer (Executive Lead) • Finance Office (Receives invoices, approves and signs) • Media Relations Officer (Interacts with media, community, etc.) *Note — First on -scene employee is the incident commander until other employees or agency responders arrive with increased training and experience in handling type of incident. Page 8 of 43 DIitt. re et , ii, i , r . LI Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2— Incident Reporting P � and Management � Discovery ICS Matrix Level 1 Incident Commander Operations Lead Manager of Engineering Discovery Operations Center Director of Operations Chief Operating Officer Safety First Responders: - Fire Dept. - Police - Medical Finance Media Relations Environmental 1 Safety Level 2 Incident Commander Operations Lead Discovery Operations Center First Responders: - Fire Dept. - Police -Medical Manager of Engineering Environmental Level 3 Incident Commander Operations Lead Responsibilities Page 9 of 43 Exibcrd _., i, . r •4� z,... ► �. Document #: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management Discovery Midstream Leadership Discovery Midstream Leadership includes the Director of Operations and Management that is part of the leadership team for the facility. Discovery Leadership is responsible for: 1. Identifying and designating the person(s) responsible for developing the DERP for their areas of responsibility and ensuring the DERP is developed in compliance with Discovery Midstream standards and any additional emergency response plan governmental regulations. 2. Communication of the DERP to all employees and contractors in their areas of responsibility. 3. Ensuring employees complete required training. 4. Ensuring employees in their areas participate in drills and exercises. Emergency Action Committee The Emergency Action Plan Committee consists of Discovery Leadership, Media Relations, Health & Safety, and Environmental representatives. The Committee is responsible for: 1. Review and revision of this plan. 2. Scheduling emergency response drills. Discovery Operations Center (DOC) The Discovery Operations Center is responsible for: 1. Routing emergency calls to appropriate personnel identified in the Emergency Contact list provided according to incident level. 2. Gathering information to communicate to Director of Operations or designated Incident Commanders and/or external emergency responders. Operations Department The Operations department is responsible for: 1. Enacting and completing shut -down procedures for the facility. Safety and Health Department The Safety and Health representatives are responsible for: 1. Identifying, providing, or obtaining appropriate Emergency Response training for all employees. 2. Maintaining and updating written Emergency Response Plan per Discovery Leadership. 3. Coordinating Emergency Response drills with Discovery Leadership. Supervisors Supervisors are responsible for: 1. Ensuring their employees are aware of the steps to take in an emergency. Page 10 of 43 r i tr4 rill 46) y as r Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DE RP) Location: Section 2— Incident Reporting and Management 2. Notifying DOC of the location of mobility impaired employees who will require evacuation assistance if a building evacuation is ordered. 3. Ensuring employees in their area of work responsibility are trained on the Discovery Emergency Response Plan. Employees Each employee: 1. Is responsible for their own safe evacuation during emergencies and drills. 2. Is required to participate in practice drills and respond to all emergency alarms. 3. Is required to obtain training over the Discovery Emergency Response Plan. 4. Is responsible for escorting their visitors to an exit or safe area during an emergency or drills. Mobility Impaired Employees Mobility impaired employees are responsible for: 1. Informing their supervisors and Evacuation Warden that they will require assistance during a building evacuation. 2. Positioning near an emergency exit to await evacuation assistance from the Fire Department if a building evacuation is ordered. Page ° of 43 D„me, urd r . , • tat4� z,...:s ► �. Document it: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management Training Requirements of Emergency Responders Training for emergency response employees shall be completed before employees are called upon to perform during real emergencies. Such training shall include the elements of the emergency response plan, standard operating procedures the employer has established for the job, the personal protective equipment to be worn and procedures for handling emergency incidents. Training requirements for emergency responders per OSHA 29 CFR 1910.120(q) are: Action Training Initiating Emergency Response Only: First Responder Awareness Level: Sufficient training to demonstrate competencies. Notifying authorities Respond in a Defensive Fashion: First Responder Operations Level: Protect nearby environment from persons, property, or a safe distance. Eight competencies. (8) hours of training and specified Respond in an Aggressive Fashion: Hazardous Materials (HAZMAT) Technician: Approach point of release (Hot Zone Entry) Twenty Responder competencies. four (24) Operations hour of training Level equal and specified to First to plugging, of stop release hazardous patching, or exposure.) substance or valve release isolation (i.e. at point Assume Incident Control of Commanders Incident: assume control of the On Scene Incident Commander: Twenty four (24) hours of training equal to First incident scene beyond First Responder Responder Operations Level and specified Awareness Level. competencies. Skilled Provides Support: immediate, short-term support work Skilled Initial Support Personnel: briefing at emergency response site to at scene of incident. include involved, wearing and duties of PPE, to chemical be performed. hazards Specialized Assist, hazardous counsel, substances Support: or advises at the IC on facility. specific Specialist Employees: Sufficient training in area of specialization or demonstration annually. competency Clean Assisting on plant -Up or with property. Clean or directing -Up Supervisors: clean-up efforts Clean 40 training -hour -Up or Clean HAZWOPER in 29 CFR 1910.38 -Up Supervisors: training, plus (Emergency proper Action 1910.1200 applicable Plans), 1910.134 (Hazard safety (Respiratory and Communication), health Protection), training and made other necessary by tasks expected to be performed. Page 12 of 43 DI--...„ re et , ii, al , r Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2— Incident Reporting P � and Management � Drills and Exercises for Emergencies Discovery Midstream training exercises or drills for emergencies and frequency for each for the Fort Lupton, CO Gas Plant are described. The purpose of any exercise or drill is to reveal planning weaknesses, reveal resource needs and shortfalls, improve coordination within the site, clarify roles and responsibilities, and improve overall performance of all employees. 1. Drills or Exercises will be carried out at least once every 12 months or more frequent if needed or required by Discovery Midstream Operations. 2. Table Top Exercises — When chosen this type of exercise is best utilized to resolve coordination and responsibility issues through a low stress discussion. 3. Functional Exercises — When chosen this type of exercise simulates a real emergency under high stress conditions by testing coordination among various functions and outside response agencies. 4. Full Scale Exercises — When chosen this type of exercise test an entire community's response capability and involves the use or real world equipment. Any three of the exercise types are acceptable for testing the functionality of this E 6. When conducting a drill, an "After Action Report" needs to be completed and documented identifying at a minimum the following: • • • • Type of drill/exercise conducted Scope and Objectives Persons involved Sequence of events Results/Outcome (i.e. were objectives achieved) Lessons learned Action plan, including timelines Drill/Exercise After Action Report Page 13 of 43 Dir--.1 $4,})ola rill. Document #: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management Drill/Exercise Type: Scope & Objective: Date & Time: Facility: Participating Agency: Location Alarm Initiated: Yes No N/A COMMENTS/ACTIONS EVALUATION CRITERIA Communication Process a. Was Emergency Shutdown (ESD) audible throughout facility? ❑ ❑ ❑ b. Are communication tools adequate (phones, other equip)? ❑ ❑ ❑ c. Are lines of communication clearly understood? ❑ ❑ ❑ Decision -Making Process and Authority a Were decisions made in a timely and effective manner? ❑ ❑ ❑ b. Are changes necessary to improve decision -making process? ❑ ❑ ❑ ERP Understanding a. Does everyone understand the how it differs from daily operations? Incident Command Structure and ❑ ❑ ❑ b. Was activation executed response contacts receive properly and timely notification did proper emergency of incident? ❑ ❑ ❑ c. Did secondary employees muster know locations area? of and assemble at primary or ❑ ❑ ❑ d. Was accountability for all personnel at the plant taken? ❑ ❑ ❑ Media Response a. Was media handled in an appropriate manner? ❑ ❑ ❑ b. Was media response pro -active and timely? ❑ ❑ ❑ c. Was follow-up to media appropriate and timely? ❑ ❑ ❑ Crisis Management Ability a. Were critical issues identified and addressed? ❑ ❑ ❑ ❑ ❑ ❑ b. Were facilities adequate for level of emergency response? c. Was overall team efbrt effective in handling the incident? ❑ ❑ ❑ Document Performance a Was information needed to assess scenario readily available? ❑ ❑ ❑ Notification Performance a. Were internal notifications manner? made in a timely and effective ❑ ❑ ❑ b. Were agency notifications made in a timely manner? and effective ❑ ❑ ❑ Overall Effectiveness of Emergency Response Plan a. Were objectives of drill/exercise achieved? ❑ I ❑ ❑ Comments/Concerns/Corrective Actions: Review and Sign -Off by: Print Name: Media Relations Support Plan In the event of an emergency involving or potentially involving the news media (TV, radio, Page 14 of 43 _., i,. r lick•crd4 •tat 4� z,... ► �. Document #: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management newspaper, etc.), Discovery Midstream will utilize a representative from the Tenll 0 Group whose name and phone number is listed on the Emergency Contact List in Appendix A. The Ten/10 representative will be responsible for developing, managing, and communicating essential organization information to internal and external stakeholders with the assistance of Discovery Management team. This could include: • Maintaining proactive contact with Emergency Response Team(s), assisting with evaluations, collecting information, and communicating progress and updates; • Liaising with community relations and field personnel; • Developing and distributing public statements and news releases; • Arranging and leading media communications when necessary. In the event members of the news media approach you for comment on any Discovery Midstream emergency situation, tell them a statement is being prepared, and defer any further comments to Director of Operations or other senior manager when Director of Operations is not available. Keep in mind the news media are the company's liaison with the public and the community. They must be treated fairly, with every effort made to cooperate honestly. If a member of the media wants on -the -spot coverage or personal interviews, the following applies: 1. Notify the senior manager on site. 2. Senior manager shall call Discovery Midstream Media Relations Contractor at (303) 507- 0510. 3. Media Relations Contractor will gather facts of the situation, prepare a statement, coordinate with client as required and return site contacts call to provide instruction. Under no circumstances will the name of any accident victim be released to the public. When the facts become known, a Senior Company employee will, in conjunction with Media Relations Contractor and Executive team, prepare a statement for release to the news media, if appropriate. Media Management "Do" and "Do Not" Do • Exhibit a professional, co-operative but firm attitude and remain low-key at all times. • Know the location and telephone numbers of company spokespersons. • Know the whereabouts of all media in your party at all times. • Offer to follow up requests for information about the incident, rather than answer questions yourself. Don't • Don't try to please photographers by allowing unauthorized photo opportunities. • Don't allow media in "No go" areas. If they insist, request back up. • Don't feel compelled to answer questions. You are not a spokesperson. "I don't know" is Page 15 of 43 DI--...„ re et , ii, al , rit LI Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2— Incident Reporting P � and Management � a good answer. • Don't get into a confrontation with the media. It may become the story. • Remember any statements made by company employees' and/ or contractors that may in any way deal with root cause, fault or liability have the potential to negatively impact the corporate reputation. Incident Reporting 1.0 Application 1.1 Applies to all Discovery Midstream employees. Page 16 of 43 Exibcrd4 ,, r . „me, • tat � � z,...:� ► -. ,�, Document #: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management 2.0 Definitions Environmental Incident — incidents with potential to adversely affect environment or violate environmental law or permit. Fatality — Any work related death while engaged in Discovery Midstream business. This does not include death while traveling to and from work. First Aid — One time treatment and subsequent observation of minor injuries when those and only those treatments are administered and mentioned as First Aid per OSHA (See OSHA 29 CFR 1904.7(b)(5)(ii)(A) through 1904.7(b)(5)(ii)(N) for what OSHA considers First Aid.) Illnesses — An abnormal condition or disorder caused from anything other than Instantaneous events. This includes acute illnesses resulting from relatively short exposure times. Illnesses may be caused in whole or in part, by exposures to chemicals, physical agents (e.g. radiation, noise, extreme temperatures), biological agents, and ergonomic factors. Incident - Any event which causes or has potential (Near Miss) to cause personal injury, damage/loss of assets, environmental damage or hazard to health and/or safety of any individual. Injury — An abnormal condition or disorder caused by instantaneous events such as cuts, slips, falls, etc. Near Miss — Any incident where the potential for personal injury, property damage, or adverse environmental impact was present due to an event which occurred, even though there was no injury, damage, or impact due to timing or distance. Stop Work — Authority and responsibility provided to all Discovery Midstream employees, contractors, and visitors to intervene or stop a task without fear of reprisal if any unsafe action or condition at the work site is observed. Vehicle Incident — Event or occurrence involving vehicle owned, operated, assigned, controlled, rented or leased by Discovery Midstream, including personal vehicles while being used for company business or subsidized by company. Work Related Injury of Illness- Injury or illness if an event or exposure in the work environment either caused or contributed to the resulting condition or significantly aggravated a pre-existing injury or illness. 3.0 Work -Related Injuries, Illnesses and General Incident Reporting Requirements 3.1 The following must be reported to Discovery Midstream Management for classification, input, and investigation within 24 hours of occurrence: • Work -Related Injury or Illness • Reportable Environmental Incidents • Property and Equipment Incidents Page 17 of 43 . , Jr."- rat A , :::)....„ _ trill ' Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2— Incident Reporting and Management • Near Misses • Any other occurrences deemed necessary by Discovery Management 3.2 Discovery Midstream utilizes a third party company, "Employer Flexible" to manage the company's Workers Compensation Claims Program and Post injury Support. 3.3 When any of the incidents mentioned in section 3.3. occur, the supervisor or lead person in charge shall complete the following: 3.3.1 Fill out and complete an Accident -Analysis Report (Appendix B) within 24 hours of the occurrence and send to Discovery Midstream Management, Safety Department, and Employer Flexible. 3.4 Any incident requiring an employee to seek medical attention, will also require employee, supervisor, or lead person in chard to complete the following: 3.4.1 Fill out and complete the "Post Injury Treatment Authorization for Preferred Provider Networks" form (Appendix E) and emailed copy to risk@employerflexibie.com or call "Employer Flexible Safety & Risk Main Line at 1-888-983-5881 to speak with live person. 3.4.2 The employee shall carry the completed form with them to the attending clinic/hospital. 3.4.3 The employee shall complete the "Employees Notice of Injury" form (Appendix F) after being treated and when able to do so. 3.4.4 The completed form will be faxed to Employer Flexible at 281-377-7029. 3.5 All incidents mentioned in section 3.1. will be investigated by a team of Discovery Midstream employees and EHS department. Incident Response General Actions The first person at the scene of an emergency may be faced with a complex situation. A "First Responder" should try to remain calm., exercise decisiveness, and provide assurance. A First Responder should take the following steps and improvise as needed: Page 18 of 43 isIELAIW Itti 114 :000 f r Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2- Incident Reporting and Managementoirp ,444. i . Scan surroundings to ensure own safety and safety of those who may enter area. A general assessment of situation will help clarify actions required. If person(s) with injuries are present, contact appropriate emergency services (if necessary) and if comfortable, voluntarily treat injured person(s) to best of your training and abilities. 2. Evacuate people in immediate danger or with injuries if comfortable and if movement will not cause further harm. If willing, administer first aid, if necessary, per training. Arrange for traffic control as required. Be firm, explicit, and courteous with the public. Exert positive leadership and give instructions calmly. 3. Isolate and eliminate any sources of ignition, such as running engines, sources of sparks, etc. Check road crossings, public utilities, and overhead power lines for danger from possible fire. Shut down operations as needed. 4. Open or close valves as necessary, if it can be done safely, to eliminate the flow of gas to the affected area. 5. Contact your supervisor and Discovery Midstream Operations Center and give a brief overview of the incident and your actions. Based on Level of incident will determine emergency response plan going forward. 6. Maintain scene control until relieved by a supervisor or more experienced person. Use whatever actions necessary to safeguard all persons, property, and environment only when actions can be accomplished in a safe manner. Page 19 of 43 1.14 All Iii MIS r . , Dtgiet $4) 'We i Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2— Incident Reporting P � and Management � Specific Scenario Response The following specific events are considered pre -emergency guidelines. General Fire/Explosion/Wildfire 1. Activate facility or system shutdown. 2. Perform continuous monitoring and notify Discovery Operations Center 877-614-7183 or Fire Department 911. 3. If, and only if, fire is in incipient stage, personnel who have been trained in the use of portable fire extinguishers may attempt to extinguish fire using these devices. 4. If decision is made to use portable fire extinguisher, an evacuation of the area or building should commence in conjunction with these efforts. 5. In the event of a fire or explosion, personnel shall evacuate the facility. 6. If willing and trained, provide first aid to any injured persons. 7. Request emergency medical services Of needed). 8. If safe to do so, clear area of any persons, vehicles, etc. which may be affected by the emergency. 9. Request additional resources if needed (fire, police, or company personnel) to isolate area. 10. Evacuate using nearest and safest "Exit". 11. Proceed to your esignated Muster Area. 12. Do not return to the building/area until "All Clear" is given by Operations Department. Hazardous Material Spill 1. Perform continuous monitoring and notify your supervisor of the situation. 2. Take actions necessary to prevent the contamination of additional personnel and/or additional area or property. 3. Place barricades to restrict access. 4.. Evacuate personnel from area. 5. User personal protective equipment to prevent contamination, 6. Provide first aid if needed. 7. Call additional resources if needed (fire department, emergency medical services, etc.). Tornados / High Winds 1. Perform continuous monitoring of the situation by contacting the National Weather Service, listening to radio, television and/or communicating with your supervisor. 2. When a tornado warning is issued, ensure that employees in the affected area are notified of the warning. 3. Determine what facilities, if any, should be shut in. 4. Determine where personnel should be "stationed". 5. Determine if vehicle traffic should be restricted. 6. Determine expected duration of the emergency.. Page 20 of 43 i, r . am I Exibcrd _., 4� z,...:s ► �. Document #: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management 7. Determine if personnel will be dismissed until normal operations are possible. 8. Determine if an alternate interim worksite / office will be used. 9. Address concerns for affected personnel (others in areas of the incident). 10. Have location personnel report to the designated area. 11. Account for all personnel on duty. 12. Be aware of your surroundings. 13. If your facility is damaged by the tornado / high wind, notify your supervisor. Winter Weather (Severe snowstorm, blizzards and I or freezing temperatures) 1. Perform continuous monitoring of the situation by contacting the National Weather Service, listening to radio, television and/or communicating with your supervisor. 2. Avoid unnecessary travel. 3. Understand the hazards of wind chill which combines the cooling effects of wind and cold temperatures on exposed skin. 4. Blizzard warning include strong winds, blinding wind driven snow and dangerous wind chills. 5. Seek shelter immediately, if needed, and stay in contact with your supervisor. Pipelines Explosion or Fire near a Pipeline 1. Determine is a 911 call is needed. 2. Offer first aid to any injured parties. If the incident is reported by an outside person, the Field Supervisor shall be contacted immediately. The field supervisor or his designee will alert the Operations Manager in order to maximize response and ensure the safety of others working in the area. The Operations Manager will dispatch the Incident Commander and the closest Field Operator, team member, or authorized designee in the area to the site reported and attempt to identify the source of the fire or explosion. If a fire is present, the gas supply shall be shut in immediately, followed by isolation at the nearest block valves on either side of the site. Unless there is immediate danger to nearby personnel or equipment, the fire should be allowed to burn out on its own, unless the decision is made to extinguish the fire. 1. The First Responder I Operator shall: a. Monitor line pressure at delivery and receipt points and station sites. b. Close isolation valves to stop the supply of gas to the affected area. c. Ensure that no other persons enter the scene until it is determined to be safe by the Operations Manager or his designee. 2. The Incident Commander I Field Supervisor shall: a. Travel to the scene and assume the Incident Commander role. b. Provide assistance in the event of an evacuation. Page 21 of 43 _., i,. r Exibcrd4 •tat 4� .g...,: .4 ► �. Document #: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management c. Assist the Pipeline Operator or authorized designee with the preparation of a log of incident events and scene photographs. 3. The Communications Center / Operations Manager shall: a. Determine the need for notification of: 1. Public utilities. 1i. Additional team members if additional lines are to be shut in. iii. Corporate personnel. iv. Regulatory agencies. 4. Site Security a. Once the source of the gas has been shut off and the fire extinguished, the area shall be kept clear of all personnel. Once the area is determined by the Operations Manager to be safe for entry by Discovery personnel, an investigation will begin. b. Once the area has been determined by the Operations Manager to be safe for long term entry by Discover personnel and contractors, work may begin on repairing the pipeline. 5. Returning to Service a. Upon completion of the repairs, the line shout be refilled at a rate that will ensure complete evacuation of any air within the line. The amount of time for purging will depend on the pressure used to purge, the location of the repair, and the amount or air allowed into the pipeline during repair. Purging shall be conducted in accordance with the Purging Procedures in the Discovery Midstream Gas Pipeline System Operations and Maintenance Manual. (Reference Gas O&M 1501) 6. Investigation a. Once the initial investigation criteria has been met, and the area has been approved to be returned to operation, a thorough investigation of the cause of the incident shall be made and action taken shall be reviewed to ensure the effectiveness and continuity of the plan. Changes deemed necessary should be implemented as quickly as possible. Pipeline Leak l Unexplained Gas Loss 1. Initial Response for a Pipeline Leak: a. The initial response to any leak in the pipeline shall be to dispatch the nearest Pipeline Operator, employee team member or authorized designee to the site reported and to search the area reported for the source of the leaking gas. Responders should be aware of wind direction and low lying areas where product may settle and the respective hazards of each. In no case, will any person approach an area exceeding 10% LEL. b. Once the source of the gas leak has been located, the area shall be kept clear of all personnel other than those of the Company or of a Contractor. Once the area is secured, the leak shall be stopped by suitable means (i.e., Shut down compressors or isolate the leak through the use of block valves). 2. Initial Response for an Unexplained Gas Loss: a. The initial response shall be to dispatch an operations employee to the site suspected to search the area for the source of the leaking gas. Page 22 of 43 Exibcrd i, :ht.. . sin 14� z,...:� ► -. Document #: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management b. If there is difficulty locating a suspected leak, the following steps shall be implemented: : i. Shut down the line in question under pressure and watch for a pressure drop. Close intermediate valves to isolate leaking section. ii. Look for signs of damage to vegetation, wilted leaves, etc. iii. Use a probe bar to make holes above the line, taking care not to hit the line itself, and sniff the holes with a leak detector. iv. Using detection equipment, inspect the open end of casing vents. v. Obtain more sensitive equipment to perform a flame -ionization survey. vi. If required, shut down and isolate the line into sections and determine which section is not holding pressure. See the Discover Pipeline tactical Plan for valve locations. 3. Action to be taken a. Determine if a 911 call is needed. If the leak is in the pipe itself, and is escaping from a small hole or pit, the leak may be stopped with a repair clamp. b. After this temporary repair has been made, the line should be permanently repaired when conditions are safe to do so. If corrosion is suspected, a survey of the immediate area should be made to check the effectiveness of the cathodic protection in the area. c. If the leak is too large for a temporary repair, the system should be shut down, isolated from the stations, and the nearest isolation valves closed. The affected segment of line should then be blown down to atmospheric pressure and repairs made by qualified and approved personnel. 4. Returning to Service a. The amount of time required for purging will depend on the pressure used to purge, the location of the repair along the line, and the amount of air allowed into the line during the repair procedure. As each incident may contain unique elements, a plan for returning to service will be prepared for each incident, in accordance with the Purging Procedures in the Discovery Midstream Pipeline System Operations and Maintenance Manual (reference Gas O&M 1501). b. After the line is back in operation, a thorough investigation of the cause of the leak shall be made and action taken to prevent a re -occurrence. This may entail sending a specimen of the pipe from the leak site to an independent laboratory for examination, if the leak was due to failure of the pipe, a weld failure, or corrosion. If the leak was caused by third party damage, analysis may not be necessary. 5. The Pipeline Operator, employee team member, or authorized designee shall: a. Monitor line pressure at delivery and receipt points and station sites. b. Open or close isolation valves as necessary to stop the supply of gas to the affected area. c. Alert Company and approved Contractor personnel and dispatch necessary personnel, equipment, and material to the scene. d. Ensure that no persons enter the scene until determined safe by the Operations Manager or his designee. 6. The Field Supervisor shall: Page 23 of 43 Exibcrd _., i,. r •tat 4� z,... ► �. Document #: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management a. Alert Company and Contractor personnel to ensure the safety of those who may be working along the same system. Dispatch necessary personnel, equipment, and material to the scene. b. Arrange assistance for persons in the event any evacuation is required. c. Establish and maintain communications with the Pipeline Operator on site. d. Repair the line and restore service as soon as possible. e. Assist the Pipeline Operator, employee team member or authorized designee with the preparation of a log of incident events and scene photographs. 7. The Operations Manager or their designee shall determine the need for notification of: a. Public utilities. b. Additional employee team members or other company personnel if additional lines are to be shut in. c. Regulatory agencies for incident reporting. Suspected Damage Due to Natural Disaster near Pipeline 1. Action to be taken a. Following any natural disaster capable of causing damage to the pipeline or pipeline facility, an immediate check of the pipeline and pipeline facility for any unexplainable pressure loss, gas vapor or gas odor shall be conducted by the a designated Pipeline Operator, team member or authorized designee. b. In addition, personnel shall make a patrol of the entire pipeline route if the natural disaster has been of the magnitude sufficient to cause any local structural damage. c. If any leaking gas is found, the area shall immediately be cleared of all personnel other than those of the Company or of a designated contractor. Once the area is secured, the leak shall be stopped by suitable means. d. The Field Supervisor or his designee will alert other company personnel as needed in order to maximize response and ensure safety for others working along the same system. e. If the leak is in the pipe itself, and is escaping from a small hole or pit, the leak may be stopped with a repair clamp. After this temporary repair has been made, the line should be permanently repaired when conditions are safe to do s o . If corrosion is suspected, a survey of the immediate area should be made to check the effectiveness of the cathodic protection in the area. f. If the leak is too large for a temporary repair, the system should be shut down, isolated from the stations, and the nearest block valves closed. The affected segment of line should then be blown down to atmospheric pressure and repairs made by a qualified contractor. 2. Return to Service a. The amount of time required for purging will depend on the pressure used to purge, the location of the repair along the line, and the amount of air allowed into the line during the repair procedure. As each incident may contain unique elements, a plan for returning to service will be prepared for each incident, in accordance with the Purging Procedures in the Discovery Midstream Gas Pipeline System Operations and Maintenance Manual. (Reference Gas O&M 1501) 3. Investigation Page 24 of 43 1.14 All Iii MIS r . , alLergs $4) ire I Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2— Incident Reporting P � and Management � a. Once the initial investigation criteria have been met, and the area has been approved to be returned to operation by Management, a thorough review of the incident and the responses made shall be conducted. Compressors Explosion or Fire at a Compressor Station 1. Determine is a 911 call is needed. 2. Offer first aid to any injured parties. If the incident is reported by an outside person, the Field Supervisor shall be contacted immediately. The field supervisor or his designee will alert the Operations Manager in order to maximize response and ensure the safety of others working in the area. The Operations Manager will dispatch the Incident Commander and the closest Field Operator, team member, or authorized designee in the area to the site reported and attempt to identify the source of the fire or explosion. If a fire is present, the gas supply shall be shut in immediately, followed by isolation at the nearest block valves on either side of the station. Unless there is immediate danger to nearby personnel or equipment, the fire should be allowed to burn out on its own, unless the decision is made to extinguish the fire. 1. The First Responder I Operator shall: a. Monitor line pressure at delivery and receipt points and station sites. b. Close isolation valves to stop the supply of gas to the station. c. Ensure that no other persons enter the scene until it is determined to be safe by the Operations Manager or his designee. 2. The Incident Commander / Field Supervisor shall: a. Travel to the scene and assume the Incident Commander role. b. Provide assistance in the event of an evacuation. c. Assist the Pipeline Operator or authorized designee with the preparation of a log of incident events and scene photographs. The Communications Center / Operations Manager shall: a. Determine the need for notification of: i. Public utilities. ii. Additional team members if additional lines are to be shut in. iii. Corporate personnel. iv. Regulatory agencies. 4. Site Security a. Once the source of the gas has been shut off and the fire extinguished, the station shall be kept clear of all personnel. Once the area is determined by the Operations Manager to be safe for entry by Discovery personnel, an investigation will begin. Page 25 of 43 Exibcrd i, :ht.. rip i 14� z,...:s ► -. Document ##. 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management b. Once the station has been determined by the Operations Manager to be safe for long term entry by Discover personnel and contractors, work may begin on repairing the station. 5. Returning to Service a. Upon completion of the repairs, the line shout be refilled at a rate that will ensure complete evacuation of any air within the line. The amount of time for purging will depend on the pressure used to purge, the location of the repair, and the amount or air allowed into the pipeline during repair. Purging shall be conducted in accordance with the Purging Procedures in the Discovery Midstream Gas Pipeline System Operations and Maintenance Manual. (Reference Gas O&M 1501) 6. Investigation a. Once the initial investigation criteria has been met, and the area has been approved to be returned to operation, a thorough investigation of the cause of the incident shall be made and action taken shall be reviewed to ensure the effectiveness and continuity of the plan. Changes deemed necessary should be implemented as quickly as possible. Plant Explosion or Fire at a Plant 1. Determine if a 911 call is needed. 2. Offer first aid to any injured parties. The Lead Plant Operator shall be contacted immediately. The Lead Plant Operator will assume the role of the Communications Center and will alert other company personnel as needed in order to maximize response and ensure safety for others working along the same system. Upon activation of the Emergency Shut Down (ESD) protocol, all personnel must report to the pre -determined location for a head count outside of the plant. This head count will be completed by the Incident Commander, or Plant Operator. Log entries of visitors will be utilized to account for all persons inside the plant. Visitors will receive training about alarms and mustering areas. Plant personnel should notify any adjacent operations of the current situation so they can act accordingly with regard to their own operations and the potential effect on our operations. The Lead Plant Operator or his designee should consider the effect of both shut down and continued operations of adjacent facilities. Once the fire department and/or Lead Plant Operator has verified that it is safe for you to enter, employee team members may return to secure the plant and attempt to identify the source of the explosion/fife. 1. The First Responder I Plant Operator shall: a. Open or close isolation valves as necessary to stop the supply of gas to the affected area. b. Alert Company and Contractor personnel. Alert adjacent operations. Dispatch necessary personnel, equipment, and material to the scene. Page 26 of 43 _., v it), I Exibcrd „me, r . 4� z,...:� ► �. Document #: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management C. Ensure that no persons enter the scene until determined safe by the Lead Plant Operator. 2. The Communications Center I Lead Plant Operator shall: a. Alert Company and Contractor personnel to ensure the safety of those who may be working along the same system. Dispatch necessary personnel, equipment, and material to the scene. b. Provide assistance in the event of an evacuation. c. Establish and maintain communications with the Lead Plant Operator. d. Assist the Plant Operator or authorized designee with the preparation of a log of incident events and scene photographs. 3. The Lead Plant Operator, or their designee shall determine the need for notification of: a. Public utilities. b. Additional employee team members if additional areas are to be shut in. c. Operations Manager. d. Regulatory agency. 4. Site Security a. Once the source of the gas has been shut off and the any fire extinguished, the plant shall be kept clear of all personnel other than those of the Company or of an approved Contractor. b. Once the area has been determined by the Operations Manager to be safe for long term entry by Discovery Midstream personnel and contractors, work may begin on repairing the plant. Repairs may commence upon approval of Management. 5. Return to Service a. As each incident may contain unique elements, a plan for returning to service will be prepared for each incident, in accordance with the Purging Procedures in the Discover Midstream Ft. Lupton Plant Standard Operating Procedures or the Operations and Maintenance Manual. b. Once the initial investigation criteria has been met, and the area has been approved to be returned to operation, a thorough investigation of the cause of the incident shall be made and action taken to prevent a re -occurrence. In addition, all phases of the incident, responses of various individuals and organizations, and results of the actions taken shall be reviewed to ensure plan effectiveness and continuity. Changes deemed necessary should be implemented as quickly as possible. Medical Emergency First Person on Scene: 1. Do not move the victim. 2. Call 911 if warranted. 3. Call Discovery Operations Center 877-614-7183. 4. Give the following information: a) Your name and extension b) Name of victim c) Nature and cause of injury (if known) d) Exact location of the victim Page 27 of 43 yrj. i at -Art A 1 Document #: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management ,....e---. ...., vir -vein b., ,, 6. Notify Supervisor. 7. Assist victim as needed. 8. Whenever possible, have an employee meet external Emergency Response Services in a nearby area to lead them to the victim. 8. If you are exposed to blood during the emergency, notify supervisor. Note: Employees are not required to render emergency assistance. However, periodic cardiopulmonary resuscitation (CPR) courses will be offered to employees that would like to learn this life saving procedure. An Automated External Defibrillators (AED) and First Aid Kit is located throughout the facility and may be used by trained personnel should they choose to do so. Spill Response and Chemical Release Discovering Party: If the Spill cannot be adequately and safely contained and cleaned up by work personnel: 1. Clear all employees from the immediate area to nearest and safest assembly area. 2. Call Discovery Operations Center 877-614-7183. 3. Report the following information: a) Name and phone number of person reporting incident. b) Exact location of spill. c) Material spilled. d) Estimated quantity e) Cause of spill Page 28 of 43 _., v it), ,I „me, r . Exibcrd4 4� z,...:s ► �. Document #: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management f) Current action taken for containment 4. DOC will contact Trihydro if spill cannot be contained and cleaned up by employees. 5. Notify Supervisor. 6. Do not return to the area until the "All Clear" is given by Operations Department. If a Chemical Release (Unfamiliar Odor) is detected: 1. Clear employees from the immediate area to nearest and safest assembly area. 2. Emergency Shutdown (ED) will occur for whole facility or equipment. 2. Contact DOC 877-614-7183. 3. Report the following information: a) Name and phone number of person reporting incident. b) Exact location of chemical release or unfamiliar odor. c) When known provide identity of chemical released. d) Current action taken to contain chemical release or prevent employee exposure to unfamiliar odor. 5. Notify Supervisor. 6. Do not return to the building/area until the "All Clear" is given by Operations Department. Discovery Operations Center: 1. Contact Trihydro if needed 800-359-0251. 2. Contact appropriate Discovery personnel. Spill Response Personnel: 1. Assess the situation. 2. Obtain Safety Data Sheet (D) for material spilled. 3. Obtain 90 Gallon Spill Clean-up Kit located at Operations/Warehouse Building (Appendix B). 3. Contain and clean up spill, if possible. Note: Employees are not required to perform spill response and should not attempt to do so if not properly trained. Natural Gas Emergency If You Smell Gas: 1. Do not attempt to locate the source. 2. Do not turn on/off electrical switches. 3. Do not use ANY phone inside the building. 4. Do not use an open flame or potential ignition sources. 5. Evacuate the building using Exit. (Do not activate fire alarm system) 6. Call Discovery Operations Center 877-614-7183 or Fire Department 911 after exiting the building to a safe location. 7. Proceed Designated Muster Area. 8. Do not return to the building until the "All Clear" is given by Operations Department. Page 29 of 43 ►� r . p'_ Document #: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management gire: Discovery Operations Center: 1. Contact Utility Provider. 2. Contact Director of Operations. 3. When needed contact Fire Department. Bomb Threat If you receive a call or observe a suspicious object, Do Not Panic. Person Receiving the Call: Make note of the caller's manner of speech, accent, background noises, etc. Use the Bomb Threat Information form to document your observations after the call is completed. • Call Discovery Operations Center 877-614-7183 and report the threat. • Do not tie-up the telephone line. Stay at your desk so you are available for any follow-up questions. • Direct employees to leave the building and assemble in area that is away from the reported threat. Page 30 of 43 DI--...„ re et , ii, al , r Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2— Incident Reporting P � and Management � Discovery Operations Center: 1. Notify Director of Operations 2. Dial 911 or Notify Police Department. 3. Notify Operations Lead. 2. Notify facility personnel Determination of Credibility: External Responders such as the Police Department will determine the credibility of the bomb threat based on information obtained during the call, along with results of the bomb search. The Police Department will search the building and hake a determination of when it is safe to re- enter the building/area. BOMB THREAT INFORMATION CHECKLIST INSTRUCTIONS: Be cairn, courteous, listen, and do not interrupt the caller. Date: Time: Exact words of person placing the call: Questions to Ask: 1. Where is the bomb right now? 2. What kind of bomb is it? 3. What does it look like? 4. When is the bomb going to go off? Page 31 of 43 re i „rat ri. rill. DI .11 re et Document #: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and ep g Management nag ...,.. 5. Why did you place the bomb? 6. Inform caller that the building is occupied, and the detonation of a bomb could result in the death or serious injury of many innocent people. This may elicit a response as to the actual location of a device. 7. What did you say your name was? Try to determine the following (Circle or Check as appropriate): Caller's Identity: Male / Female Adult / Juvenile Approximate Age: Voice: ❑ Loud ❑ Soft ❑ High Pitch Accent: ❑ Local ❑ Not Local Speech: ❑ Fast ❑ Slow ❑ Distinct ❑ Deep ❑ Raspy ❑ Pleasant ❑ Stutter ❑ Nasal ❑ Slurred ❑ Foreign ❑ Region ❑ Other: ❑ Lisp ❑ Other: ❑ Familiar ❑ Other: Manner: ❑ Calm ❑ Angry ❑ Rational Language: ❑ Excellent ❑ Good Background: ❑ Trains ❑ Music Noises ❑ Fair ❑ Poor ❑ Irrational ❑ Coherent ❑ Incoherent ❑ Quiet ❑ Voices ❑ Animals ❑ Deliberate ❑ Emotional ❑ Righteous ❑ Foul ❑ Other: ❑ Office Machines ❑ Street Traffic ❑ Laughing ❑ Intoxicated ❑ Factory Machines ❑ Party ❑ Other: Aircraft Emergency EMPLOYEES: 1. Contact Discovery Operations Center 877-614-7183. Discovery Operations Center: 1. Contact Director of Operations. 2. Notify Discovery Leadership Team. 3. If required contact: U.S. Department of Transportation Federal Aviation Administration Northwest Mountain Region Denver Airports District Office Page 32 of 43 all A , ii, r . + Document #: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management 26805 E. 68th Avenue, Suite 224 Denver, CO 80249-6361 Voice: (303) 342-1254 Fax: (303) 342-1260 Inclement Weather (Tornado) 1. The Discovery Operations Center and Facility Operators will monitor weather broadcasts/bulletins on the Internet, Television, and Radio when changing atmospheric conditions may produce inclement weather. 2. If high winds are expected ensure unsecured items are either moved indoors or secured in some manner. 3. If a tornado is sighted within a twenty mile radius of the facility, Operations will notify employees of the tornado sighting and notify building occupants to move to a an internal room without windows (i.e. bathrooms), hallway without windows, or designated shelter in place location. 4. Building occupants will remain in the shelter areas until the "All Clear" is announced by Operations Department. Page 33 of 43 DIl A , i, sk + Document #: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management Workplace Violence, Criminal Activities, Terrorism and. Civil Unrest 1. Any employee witnessing or learning of an unusual occurrence that might endanger personnel or encumber Company operations should immediately notify Discovery Operations Center 877-614-7183. 2. Employees should never take any action that endangers them or any other person. 3. Discovery Leadership will summon law enforcement personnel as necessary. 4. The appropriate course of action in response to civil unrest or acts of terrorism must be determined at the time of the event. Discovery Leadership will notify facility occupants of any directions received from law enforcement agencies, public health agencies, or civil defense agencies. Page 34 of 43 fis) " est ii \trio rill Document #: 2.2 Revision #: 1 Revision Date: 2/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management 44 ft44 44 ,.4 Appendix A — Emergency Contact List rottit \i=1A1r r? I 41;1 -4 41 ataist Oka -tea -Ad EMERGENCY CONTACT NUMBERS Discovery Midstream Operations Center (DOC) 1-877-614-7183 First Response Coordinators Office Cellular Cory Kline — Director of Operations (720) 378-6592 (970) 987-2527 Josh Bruce — Operations Lead (720) 378-6592 (970) 776-6851 Manya Miller — Manager of Engineering (720) 378-6592 (970) 891-3884 Corporate Office (Dallas) Office Cellular Cory Jordan — Chief Operating Officer (COO) (214) 414-1980 (318) 272-1018 Corporate Finance Office (214) 414-1980 N/A Media Relations Casey Nikoloric — Ten/ 1.0 Group Office: (303) 433-4397 Cellular: (303) 507-0510 Health, Safety, Environmental HHS Consulting — Health Office: (888) 492-8001 and Safety Cellular: (303) 809-9401 Trihydro - Environmental Office: (800) 359-0251 Page 35 of 43 DIr et ,,,, . riot , Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2— Incident Reporting P and Management Medical Hospital: Platte Valley Medical Center Emergency: 911 Non -Emergency: (303) 498-1600 Ambulance: 911 Poison Control: (800) 222-1222 Life Flight: 911 Workers Compensation Employer Flexible (888) 983-5881 Fort Lupton Fire Department Emergency: 911 Non -Emergency: (303) 857-4603 Department of Environmental Quality Air Quality Division: (303) 692-3100 Hazardous Materials and Waste Management Division: (303) 692-3300 Water Quality Control Division: (303) 692-3500 USCG National Response Center Hotline: (800) 424-8802 Pipeline Emergency 24 -Hour Emergency (877) 614-7183 Law Enforcement Fort Lupton Police Department Emergency: 911 Non -Emergency: (303) 857-4011 Weld County Sheriff Emergency: 911 Non -Emergency: (970) 356-4000 State Highway Patrol Emergency: 911 Non -Emergency: (303) 857-6638 Weld County Office of Emergency Management Office: (970) 304 6540 Emergency After Hours: (970) 350-9600 AdamsCounty Office of Emergency Management Office: (720) 523-6600 Emergency After Hours: 911 Utility Company United. Power: (303) 637-1300 E-470 Public Highway Authority Non -Emergency: Justine Brown (303) 537-3751 jlarown@e-470.com Chuck Weiss cweiss@e-470.com Emergency: (303) 537-3409 Page 36 of 43 ri y4r SkiNi- p • ! Document It: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management Appendix B - Discovery Gas Plant Muster Area Map DISCOVERY .-»is a M- 41.14 ..1I Seta'II Pt 111--.•L1 rr ri1.1rq' c.p:. .. r'Y,. Sat iTGPxi■ .q7 839: re _I1 ' ' '. '% IYJ .errm aiW 7t' axis NII Pin : 1IM• I I Will: 'rear corn ta. e a F- •FI PIr --Q In R.-rlltl`- P/.tpr rt,w: .r 't.:•. 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Arnuein!cl► rqo fabN'11 LW#ItVU'IIC"l.f' * - -.*I• • i 1+11)•11 ceriac 8/31 mi rllTla any _ 16 4 :✓nJ p7C laj 9VW a' r Page 37 of 43 r 1.-,arir w • Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) •r Location: Section 2 — Incident Reporting and Management Appendix C — Discovery CDP Muster Area Map DISCOVERY LE'3ENE• — r p M1 14 1 I Irks* . 1� / f i • atarmOwn r+� 1 1 ff' 1 ..r+a Bl ,.Bl L'�i� i� iF- er a 4•_t .ate -. .•aaarQt. PL a P Ltte -Loin. r is . ran lofts! i �..a•• If SAL _—"—_Blo•• l r•.�Sd Oat a...! ��((- at -n-? I w..er. FWali Ks =Moan I -Vlia= Ladaie .yP ,SE rr� rai I. amniaTr-tank walla + .s slats a i..,+ma.. ! re.Yas ro tait LgI cwric'a -T e 1 of Ma'. .. TM - a* r L_ * .ar•a a:L• Cri will a .0 -alt �rc5atr`•.a fi..•I.• was. ewe, •••— .Y-i_!t•d• is Liz r aa.a. Se -o6100•0010 Blond.. ....cr.=whew a Blo, raLiI eA•r.Pra• IMPS+wrar w •.N Vapor" I 1 re ♦u_ roe BlJ ear• sr n:r Pt r•.a ITC trr .A? )M.+. Cat •Lar tartan allarP 1LP Erantra DISCOVERY Ai'SCO CflWQ%scnititC$.ltd .•.G'.q41011MIFIPLBlf .al. a rar.gm. *ZION EN SINEERI Nti, LlC .ama as is ..d s after as. 'UrtIve analor�..-v ar +rcnCDPr' OgW&i si1E. PL4\ wry CO AS !i01$,t-1¶C0 LEGEND IC ins Extvngu usher CO2 Fir* liv.Zinguichar Mustier Ares: Page 38 of 43 ift7404 \ r = Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2— Incident Reporting and Management �,Q T, Appendix D — Accident Analysis Report (Example — Page 1) e Employer Flexible'" Report Only ■ Seeking Medical Attention impact what matters' ■ Accident -Analysis Report Workers' Compensation claim number: OSHA 300 case/file number: PART 1: identification Information Employee name: Date of accident: Occupation: Department: Time: Shift: Last 4 of Social: a.m. I[] p.m. ■ PART 2: Supplementary Information Company: Mailing address: City: Telephone Establishment location (if different from above) Accident location If Other, Specify: Employee name: Employee address: Telephone U State: ZIP code: Same as establishment? MI Other Location? (Check if applies) City: State: ZIP code: Does the Employee Speak English? • Yes ■ No If no, Specify Language: Was injured person performing regular job at time of accident? II Yes ■ No Length of service in current position: Time shift started: Name of Witnesses: Name of physician or clinic: Address of physician or clinic: a.m. ■ ■ Length of Service in Occupation: Witnesses? ■ Yes ■ No • City Fatality? ■ Yes ■ No If yes, date of death: State ZIP code Page 39 of 43 tjJ31aDocument spat sir 1 Document U: 2.2 Revision U: 1 Revision Date: 7/21/2017 Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management so �,Q a.iiT, Appendix D — Accident Analysis Report (Example — Page 2) est, Employer Flexible' Impact what matters Accident -Analysis Report PART 3: Description and Analysis The description should include important event(s) that led up to the accident, injury or illness. They should describe the nature of the injury or illness, the body part affected, specific tasks being performed, what specific equipment or substance was directly involved (include name or brand), where the work was being performed, what specific task was the employee performing (was time a factor?), and what general type of accident occurred. include weather/environmental conditions if necessary. Attach photos of accident scene, machinery, equipment and/or police report numbers as well as additional description pages as appropriate. Description: PART 4: Training Did employee receive specific training or documented instructions relating to safety and health on the task(s) being performed? r Yes MI No If Yes: Type: Instructed by: When instructed: Attach appropriate training documentation. Length of training: Completed by: Title: Print Date of Investigation: Sign Page 40 of 43 Lisr eis V�• Document U: 2.2 Revision U: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DE iP) Location: Section 2 — Incident Reporting and Management : , -4 " , Appendix E — Post Injury Treatment Authorization for Preferred Provider Networks Form (Example - Page 1) Post Injury Treatment Authorization for Preferred Provider Networks Employer Flexible". Impact what matters Injured Employee Information Name: Last 4 of SSN: DOB: Patient must present photo ID at time of Service Employer Information Company Name: Client Number: Company Address: PEO/Third Part Administrator (TPA): Employer Flexible —WC Injury Protocol Authorized by: Title: Phone: After Hours Phone: Date of Authorization: Due to the nature of these specific services, only the patient Work Related Physical Examination and staff are allowed in the testing/treatment area. Please Date of Injury: alert your employees so that they can make arrangements for children or others that might be accompanying them to the medical center. Substance Abuse Testing Type of Test Non -DOT -10 panel Post -Accident Hair Collect Breath Alcohol Page 41 of 43 ricer \ r = Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2— Incident Reporting and Management �,Q 4.T, Appendix E — Post Injury Treatment Authorization for Preferred Provider Networks Form (Example - Page 2) A Special Instructions/comments: Company has modified duty available. Please be advised that company prefers over the counter medication vs. prescription medication due to OSHA record keeping requirements. Billing, Refer to Employer Flexible WC Protocol Attn: Lynn Dollins Phone: 281.377.7604 Fax: 281.377.7029 Employer Flexible Safety 8 Risk Risk Main: 1.888.983.5881 risk@employerflexible.com Appendix F — Employees Notice of Injury (Example) Page 42 of 43 04 Eicia \ r , Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2— Incident Reporting and Management �,Q 4.T, • Employees Notice of Injury 7850 North Sam Houston Parkway West, Suite 100 Houston, Texas 77064 Phone: 281.377.7604 Fax: 261.377.7029 Employee Mama (last, first, middle: Social Security Li: Phone: i Street Address City State Zip Code i Occupation: State where employment agreement was made: Average weekly wage: Length of employment: Morths Years Date of Accident of Last Exposure: Time: AM PM Place of Injury: City/County/State Body Parts Injured: Describe in detail how the injury occurred. Treating Physician (full name): Address: City: State: Zip: Name of Co -employer Job site location: Are you a previously impaired person due to prior workers' compensaton defect or military injury that may impact tie treatment of this injury or obvious injury? If "Yes", pre-existing disability caused by accident, disease. birth please describe: Date: Description: Physician: Any person receiving temporary disability benefits from an employer or the employer's insurance career shall promptly report in writing to the employer or insurance carder and change in material fact, or the amount of income he/she is receiving. or any change in his/her employment status, occurring during the period of receipt of such benefits. I declare under penalty of perjury that I have examined this notice and claim, and all statement contained herein, and the best of my knowledge and belief, they are true, correct and complete. Any person who commits workers' cornpersation fraud, upon conviction, shall be guilty of a felory. Upon Filing this Notice of Accidental Injury and Claim for Compensation permission is given to the Administrator of the Workers' Compensation Court, the Insurance Commissioner. trte Attorney General, a District Attorney, the Insurance adjuster or their designees authorizes them access to medical records, including waiver of any privilege granted by law concerning communications made to a physician or health care provider or knowledge obtained by such physician or health care provider by personal examination. The information authorization for release may incI.Lde information. which may be considered, a communicable, or venereal disease which may include but not limited to diseases such as hepatitis. syph lis, gonorrhea. and the human immunodeficiency virusalso known as acquired deficiency syndrome. Signed this day of Employee Signature Printed Employee Name This form constitutes a medical authorization for release of medical records. Nothing shalt be constructed to waive, limit or impair any evidentiary privilege by law. Employer Flexibl& Impact what matters" Employer Flexible Copyright 2013. All rights reserved Page 43 of 43 Auburn Compressor Station Weld County Stakeholders Neighborhood Meeting Notice Details Thursday, October 25, 2018 5:30 - 7:00 P.M. Cobblestone Inn & Suites 309 Hill St Kersey, CO 80644 Purpose Rocky Mountain Midstream LLC is holding an informational meeting for the community to discuss the Auburn Compressor Station. The proposed compressor station will help transport natural gas within Rocky Mountain Midstream's gas gathering system. The project site is located south of WCR 54 between WCR 45 and WCR 47 in Weld County. The site will cover approximately 10 acres with the facility itself contained to approximately 4-6 acres. Rocky Mountain Midstream is holding this meeting to inform neighbors and landowners and to seek their input prior to submitting permit applications with Weld County. This will be an Open House style meeting with experts from different groups across the project. We hope you can join us to provide input before we submit our applications. Construction is expected during the second quarter of 2019. Contact Information If you have questions or need any information before the meeting, please feel free to contact: Lito White lito@discoverymidstream.com Auburn Compressor Station Community Meeting Thursday, October 25, 2018 Invite Mailing .List. Property Owners within 750 feet of Parcel # 096126000010 Parcel Owner 096123 00007 BROWN MARJORIE A BROWN THOMAS D 096124300033 WEINMEISTER DAVID L 096124300035 096124300036 096125200004 JOHNSON PHYLLL5 A Mailing Address 22509 COUNTY ROAD 54 REELEY, CO 806319764 23041 COUNTY ROAD 54 GREELEY/ CO 806319767 25938 COUNTY ROAD 47 GREELEY, Co 806319017 096125200005 COMPLETE ENERGY SERVICES PO BOX 330 C/0 MERIT ADVISORS GAINESVILLE, TX 762410330 096125200017 HAMILTON MARK 096126000002 AK HOLDINGS LLC 096126000006 096126000007 096126000008 096126000009 AGUIRRE JOSE A 096126000010 GEIB LISA R GEIB MATTHEW L 096126000066, KEATON ROGER CII 096126000067 KEATON ROGER C 096126200075 ALLES HARRY LEE REVOCABLE TRUST C/O MARION MALLARD 096126300005 CRUZ KANDACE K 096126400004 096126300069 WORKMANS LGVESTOCK LLC 096126400073 SCHROEDER KAREN D SCHROEDER STEVEN i 25469 COUNTY ROAD 49 GREELEY, CO 806319759 25388 COUNTY ROAD 45 GREELEY, CO 806319141 22670 COUNTY ROAD 54 GREELEY, CO 806319764 1742 37TH AVENUE PL GREELEY, CO 806343436 25565 COUNTY ROAD 47 GREELEY, CO 806319017 25569 COUNTY ROAD 47 GREELEY, CO 806318901 2131 SPRINGS PL LONGMONT, CO 805047351 25252 COUNTY ROAD 45 GREELEY/ CO 806319771 22336 COUNTY ROAD 39 LA SALLE, CO 806458727 25469 COUNTY ROAD 47 GREELEY, CO 806319017 Ui GO 80oba, DISC 0 VERY MID-tPE M PAR T NEPS Printed Name (attendee Facility/Pipeline: Community Meeting Location: (.7,+ c Ctrl ) C Li)-i ``'`'' - e C''`r`-- df (etc, ar)( -44425.4) 4227 Cif ) 7C—) emP rn aFlin_ Address M \\.c4s . /77‘.(2_ aeve cc/ Let__ k . 722tJ Oz. 69# . snit Contact Number 5 775 -Z Z ct7bo ;&v 9cco a • `I'36 30'ZZ 3 Auburn Compressor Station Community Meeting October 25, 2018 5:30-7:00 PM Community Meeting Location: Cobblestone Inn & Suites 309 Hill Street Kersey, CO 80644 Community Meeting Notes Large printed and digital materials were present throughout the meeting room, and included, facility plot plans, proposed elevation drawings, and aerial photography overlays of pipelines and proposed site boundaries. A presentation was made available which covered information regarding corporate overview, local leadership, EHS culture, and project specific details. As attendees arrived, they were greeted by Company personnel, asked to sign -in, and shown information about the site, project, design, construction and future operation of the Latham Compressor Station and associated dehydration equipment. With each member of the public in attendance, questions were asked/answered by representatives after a review of the area gathering pipeline, compression/dehydration process, construction timeline, facility operations, and emergency preparedness. Personnel from engineering, operations, maintenance, land, and compliance were available to answer questions all evening. What follows is a summary of the questions and answers discussed during the meeting. Q: What kind of wail are you going to build? A: Most rotating equipment onsite is inside of noise dampening buildings. If additional noise mitigation is required, it will be assessed on a case -by -case location specific basis. We do not construct tail sound walls similar to what you might see encircling drilling locations. 0: How do you know if the noise goes above 50 decibels? A: Noise meters are periodically used to measure sound levels and a baseline noise survey will be completed prior to starting construction. Is there another station that you have built that Ican go and see? A: Currently, there is a similar station still under construction north of the intersection of WCR 6 and WCR 29. ,: Is your company also involved in the project near CR 43? A: Yes, that is a separate project and will gather/compress gas from other wells. 0: Why is this being built here instead of closer to ... A: We site our facilities based on engineering needs and proximity to producer wells and downstream facilities. Nearby competitor facilities do not impact our plans. 0: Is the setback determined from the fence line or the center of the facility? A: We do not have a setback that we are trying to meet, and distances can be measured from either location depending on the information you are seeking. A: and bi What happens to this project if Proposition 112 passes? Colorado, County governments, and municipalities combined will lose ten of thousands of jobs Ilions of dollars in revenue. : What is the construction timeline? A: Weather depending, construction of a facility like this can take 5-7 months, and is proposed to be in operation by November 2019. et: Why did we not get a mailer? we found out about the meeting from our neighbor across the street. A: Landowners within a 500 -feet radius of the facility receive community meeting notifications from the applicant. This distance is determined by the County. 0: When will the Public Meeting be? A: The Planning Commission will post the hearing date on their website. 0: How much construction traffic will there be? A: It will be typical construction site. Depending on equipment deliveries, this may vary considerably throughout the process. 0: What about lights? I am concerned about light pollution. A: Lighting at night is on -demand and will only be used if someone is onsite and lighting a specific area is required. There is no desire to either create new or add to existing light pollution in the area. 0: Why would you not construct this near the wells? A: We are constructing in the midst of a producing field, which is the main requirement for siting compression facilities. .: I own the property next to where this will be built. Can I be involved in the landscape design process? A: Input is sought from neighbors regarding landscaping and views from existing structures with sightlines that are greatly impacted by the tallest structures. While ideas are welcome, not all suggestions can be incorporated due to conflicting neighbor requests and sightlines. Cr What is the distance they take into consideration for the berms and landsca ping for screening? A: There is no set distance. Facility and existing structure elevation are primary considerations. Notice of Inquiry Development within an Intergovernmental Agreement Urban Growth Boundary Pre -application Case # USR18-M 129 Date of Inquiry 01/15/2019 Municipality with CPA or IA Name of Person Inquiring Property Owner Planner Evans Janice Kinnin or Scott Elery on behalf of Rocky Mountain Midstream, LLC Matthew & Lisa Geib Chris Latham Planner Phone Number Planner Email Address Legal Description Parcel Number Eimmmig Nearest Intersection Type of Inquiry 970-400-3537 s _ cgatham@weldgov.com Lot B Recorded Exemption No, 0961 -26 -1 -RE -3128, being part of the Northeast 1/4 of S26, T5N, R6SW of the 6th P.M., Weld County 09612 6 000010 County Road 47 and County Road 54 Use by Special Review Permit (USR) for a Compressor Station Facility The above person met with County Planning staff about developing a parcel of land inside your designated Intergovernmental Agreement/Coordinated Planning Agreement Boundary. in accordance with the I A, found in Chapter 19 of the Weld County Code, the applicant has been notified of the IGA and the County will not accept an application for development sooner than 21 days from the date they contact you unless this signed form is returned with the box checked below indicating you do not wish to pursue annexation at this time. You are asked to sign below to acknowledge that the applicant has contacted you. Date of Contact with Municipality: )We are not interested in pursuing annexation with this applicant at this time. We request 21 days from the date of contact to pursue annexation with this applicant. a ■ Signet Representative Title Weld County Planning Department 1555 N 17'' Ave, Greeley, Co 80631 ow (970) 400-6100 -- (970) 304-6498 Fax Notice of Inquiry Development within an Intergovernmental Agreement Urban Growth Boundary Pre -application Case # USR1B-0129 Date of Inquiry 01/15/2019 Municipality with CPA or I SA Kersey Name of Person Inquiring Janice Kinnin or Scott Elery on behalf of Rocky Mountain Midstream, LLC Property Owner t Matthew & Lisa Geib Chris Latham Planner Planner Phone Number 970-400-3537 Planner Email Address cgatham@ eldgov.com Legal Description Lot B Recorded Northeast 1/4 Exemption of S26, T5N, No. 0961 -26 -1 -RE -31281 -31281 R6SW of the 6th P.M., being part of the Weld County Parcel Number 0961 6000010 Nearest Intersection County Road 47 and County Road 54 Type of Inquiry Use by Special Review Permit (LJSR) for a Compressor Station Facility The above person met with County Planning staff about developing a parcel of land inside your designated Intergovernmental Agreement/Coordinated Planning Agreement Boundary. In accordance with the IGA, found in Chapter 19 of the Weld County Code, the applicant has been notified of the ILA and the County will not accept an application for development sooner than 21 days from the date they contact you unless this signed form is returned with the box checked below indicating you do not wish to pursue annexation at this time. You are asked to sign below to acknowledge that the applicant has contacted you. Date of Contact with Municipality: 1115-1?)] We are not interested in pursuing annexation with this applicant at this time. D We request 21 days from the date of contact to pursue annexation with this applicant. � ffILies j�f (r(/� /ier i 31A/ �� Jr)f+ Zoical. iIt •� ! eY Signature of Municipality Representative Title e (AI Weld County Planning Department 1555 N 1r Ave, Greeley, CO 80631 — (970) 400-6100 — (970) 304-6498 Fax batet 1 2 3 A I B C I D E I F G I H LIGHTING FIXTURE SCHEDULE FIXTITRE TYPE QTY DESCRIPTION MANUFACTURER CATALOG No. NUMBER VOLTAGE LAMP TYPE TYPE WATTS (See Note 2� REMARKS -- CROLJ5E-HINc5 o FMV I3LCYtUNWi7 5902, 13,1:3 LUPoE! LED -- A 12 POLE MOUNT n.CODLIGHTCAC.'VISOR &SLIPFriui9 FIXTLPE%V;YOKE MOINT1MGKIT,BOLToNVMORtDV52, ADS -0E-300 12C,200,2410,277V LLD ;1-2Viii SLIFFITTER ADAPTER $ SFAG . AMERCAN LITE'C3LE * SNS-20.43-T-AB VW 0 T2DR 2IN rots. AP , 20' SQUARE STP.AIGIITST= ANCHOR -BASE POLE AA"^w-IM-J00 TOP TENON BP 11 2" RCS CXMCWIT POLE MOUNT To EXTEND FIXTURE 5'• C' ABOVE F�ERi+CK 2" RCiS CONDUIT A -EE-oQC CA 1 CROSS ARM BRACKET A MERCAN LIFEFVLE * ACR2 1',L -EE -300 -- - - B 8 BLUE STROBE TIIFEB SY/*%.RDSSIGNALING it11d XSW-bK - 12-48VDC - I - LOCATE ABOaEC.+JNPRMSORBULCINGCOORS C 24 LW EXROSJ)N PROOF. FLOODLIGHT FACTORY DIRECT M 13+1 t00VV•] - 120/240V LED (100W) \CALL SC WLL lNOTAFFE;TBUI_CING CRANE E a (XflPIATONEXIIIE'.'ERGEFCYLIGHT NOI'IMANECQA431NATfONExR: dQiGE1+1CYFIxTJRE�D6 - /21/2779 LED 14V4 BATTEIYBACK-UP(CLASSIDVISI]NII) R 4 REDSTROBE TYItR WNARDSSIGMALIMGII1IGEXSTR-6( - 12-49VDC - - NOTES: 1. FOP? LICHTIN_ itetra.U.ATION AND DETAILS r1OTE5 SEE kt ;It t ACS -EE -301 THF:U 303, 2_ N.A'TACES SHO'r"i'. 7l PARENT-ESES INDICATE APP1:4CINr.TE INPUT Y+ATAGE AND A.R.e- LISEC MAINLY F0RCALCULATING PANEL LOADS, 3. ALL FY•1.JRE5 SI-IA_L BE PURCtIA5ED AS INDICATED BYCATA..QG NUMBER QR APPROVED EQUAL. 4. FIELD CT-RACTOR -O SUPP'_Y AND INSTALL NEMA 4 LIGHTING 2-3OX LT -:L•-31 Willi TERMINAL OLJ'CKS (ALL-N-DRADLC•P 1452-94;' AND 'N3UNT TO HORTII EN) CV ?TR:ACK. 5. CONTRACTOR. U VCP.Irl I JXTUP,C AND IKITA:AL II0UNTW:TII PLAN DRAWINGS. 6. LUMINARIES SI IALL DC DARK SKY COFIPLIANT, DCOINCA-- AND St'I;LDCDATA 45 DL F.EC AANCs±I Pr?UVIDED WI I H A G1J WI I- SHIELD. 'wlSWI UR _rROUL3. 6 t3;111(441;7% z.. �!y , v i'I1 {Sy.. , r ' 4al �&�s `kow, 'little ' t305$2 ?•R'Ir tylt -tth dcc jirelt is town' G11 W1 ated lc or ill]r11an1 C, cm*ict by Sonswt Erci: ten lot. rs.J, it van JrcOoro.9aolaly twIllyZrmai: Ranti14i �IAl'lii JIG'ot1 mgr. Jc4. >.:IUY u 91n:knuia a �r, inlia,sU'srvon .lonhA0 at i Walt. nil-vd.BEn L,rtrlto 6st-9u9,tratalilna. h a wpriyl_ tiroail and oe. hepu eatnl Any uresn rnim! reuse slwit be al. tl c :de 1st: of thew,a - :-.Ir WA err WPMROCKY MOJ'NTAII•. ROCKY HJDST':PCAM LTC uxbrrur W ELI; c[ urcrY, lea • Hl1lf �� i ./' - �' ja S, TITLE FRC�ECT '4UMCER -- telldn[o. C.D.ULRICH 1O1r04IL�a AUBURN COMPRESSOR STATION WILLIAMS DJ BASIN FIELD COMPRESS'ON 18294 - amuxp:=JSJ;II INCH -- 0 i Jh.:ll n DRJI 'dINGNUMBER ELECTRICAL LIGHTING I 713,-ITIfv1„ FIXTURE AND GENERAL NOTES 3?' WH le _NM n A 755UCD TORPERMF 01,16119 CI(!U rotor, H. cM'CM E elo Samuel Ws Punic'? SChil:WiB.ry_ Engineering ow:. we? oesc..tone•. P qi _— d ., �- f ITT Coil:;,otter. ":Ali r _ 1F yk w. uttuurl: Jr. nif al otihT"C t'i ' 'ILt4ES ACS -EE -090 Ti REVISIONS - - R F V 1$ T 4 H S _ ..rca.»c 8 hR?MAPA9tN P. C r E R E N 3 C D R A Iwi I N G S ;;aSV L. L W.iuI Padova , :Stitt dJ E lam. i'M1.<dAv Vlla CC a it Fo. I3Lt?14 :6�0 t,iraaxYowd Vilna. C D E F H 1 2 3 n 7. 'L? 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M' POLE TYPE tiF'' y •�- ` , �� T °'' �� r '�--IT 313 01 f5EE MOTE 31 ° !Fiji �l 14r.F.•%!'. + I 0 A# rn.k fy!lllry� k 7r"I1�'A`I jY'#rfy f/ f • to� ;, �I ••: f-I� ..,.. Ill mil ;qfR; . 1• I •• MIR y . �I I1:'4' ••4 �I IIIII� i(i • ;�1�, WI M, aJ„gad IS Il 4 I. IOW I:'Li" i' j aI w I'1 • E. (I r re; , ill � + uI 1 ill A o- �/tai gip.. I''i - I ,a ;Iii. I it A I aJ IIi I • ' �t� .t• !. '� !Ir I 1 X18 I MI= Ai ' MI IY M;i^ , I — I ' ■ri9)11 s!'i1. or. ■rl-- ir;'v, irl. Ir Yf'F'^ ➢1� a 1�.� nil U �li -- '1I-,1 - - r � I 6a rely t r { FOR rd r.illl • ri, • r4 I 1 Sri Ill ■i�� 511 r I iiiuuiu iii I.__ I _.., ,, . • , ! ;f 1 4 q ,� + / NOTES: l q4 ll , "1 ti \ � ,', Y4 �, \ � N. U.Q.F 23'-U' AUVVL 3PADt`,>f(1 �. ��—� y + ,:: ++� / + �Vr / d - 7 —rte V B O.F 13" AO" A3O'.'E GRADE i, h]RUt:HILN.NSI6.LLAIIJliA'.U1:LIAJLSrdU'aS_EL'RAW (PIGS AlS-t_3l.L1HRu_0U. - i. ALL Fix 1 UytS SHALL Lt VUKI:IIASL-fl Ai 1N'UiCA FLU Lr C•.1 AL'.JLii `IUF1 kK C,R. APPP,OViL' EQIL'U. :. FLEW CON! FACT DR IC) SUPPLY ANL' INSTA1 NE '4.A. 1 LIc H1INCs4-SAS LT-JB-0I VilIli TERMTNAl. 12.CCKS (AI_L N•-RRADI.FY 1497-)4] AIm MOUNT TC) FAST FNO C?F P1PFRACK ic, - L,X,) "`` ++� F"�LE-fPE"AM -_ I rO. - ;,F.,n - ' POLE TYPE �.P, -------- - _ -_-_- _- - - -- - _ ---— ere - L b.U,F Li'ece FkU4t(3PrUJt I O1 - :,2,3 Mil — _ %,,.POLE Y'PE "AQ A•TyR PCOj.a 9 •� a• J 4C.5- EE•JCi 'i•m X5,1? rr:ir r'1 'J I 4' 2.5' 2r' _`5' 7$' :yIf1+di�/l+�' �'e,2°4«a n n—; f n n r, n e n n n n— 6 L o e o o a o- e e .`'C.M.E: 1' = 251 ,jF,Pt'.ff • �+ •" d e +� 7 a e a o e u o o �v Gr—v o- c { 0 4 r— -- -(MAC .P„;:,` nlI'lev, rg,!rn r:el �:9 .nAwenlnlrtanlr•M +dt.) It0 dyVdrel5.dd"ir•g u n.e�c�,i•��s>(r1� 'or lie Va nn Sy'lief" Rif `. -m tr: voted • �', Ox' :Ca e7 wit ci;went r in att.wl 3rn,e Slit :G-f<f 1s lirl:t 1><C:�Tf1. f 0GGGI-M<'t breath <f'J may .n uc-c-tel n., .nnu(n<y>.3rr:fefndIxN e rk he-. bt 4"e use*, - - • yvsdtf AS i+OTEL1 h11 -t ROCKY NIC�lli+lii'.T�Y . �� MIDSTREAM LLB LI:C"xn: WELD COUNT)._ CO I/ Willi `� J V 1715 r �r II -1I- T 1 F'l )IPf_-T FA:MSI—R „r,,nITr rn.Ill r•.Icy ia,+7;,+18 il r�uBUR!1 COMPRESSOR STATION! 4`.7LLIKh11S DJ BASIN FIELD COMPRESSION FI LLIAMSYL �I.al-ITTN PLAhI 18294 I »wm C.O. ULRICH 11,. 1 f8 titan DR.AwT',C-, WATER., 1 I PJ' Nw - I H' A „q, ISSUED E ' a 1... J_n FOR r RMIT 01, l6 i - - 0[S CSIo TtJ\ W41Q CGU f• urntt� IE H. LAIiCIC— "Nfi�fLJ W_L911 '`1P-� - - Samuel Engineering (c.f. ^f{f 41 t4 :j�j+l1'M'(3 MSc _ cfn�rl P(.Ln. S.at� MA FNOnc 'JAN710 rho W7. .,'rI1pT(f1N J ` ` �' ..1. 5 3_ 9 L WI h[p 1'ITFf., rat! �. 5 ? Y1 p( - g� _ E t. m. ACS -EE- 300 A y F E F E It _ PJ L E 3 H. P. 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