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Home My WebLink About20191752.tiffUSE BY SPECIAL REVIEW (USR) APPLICATION DEPARTMENT OF PLANNING SERVICES * 1555 N. 17TH AVENUE * GREELEY, CO 80631 www.weldgov.com * 970-353-6100 EXT 3540 * FAX 970-304-6498 LFOR PLANNING DEPARTMENT USE: AMOUNT$ APPLICATION RECEIVED BY Parcel Number*: 6 Address of site: DATE RECEIVED: CASE # ASSIGNED: PLANNER ASSIGNED: 9 6 1 _2 7- 0 _4 0 _t7 6 0 (*A 12 digit number on Tax I.D. information, obtainable at www.weldquv.com). Legal Description: See attached Section: 27 Township: 5 N Range: 65 Zone District: AG Acreage: 81 FEE OWNER(S) OF THE PROPERTY: Name: Company: Michael Boulter Farms LLC Phone #: Floodplain: eological Hazard: YCN Airport Overlay: YCN Street Address: 22019 County Rd 54 Email: City/State/Zip Code: Greeley, CO 80634-9764 Name: Company: Phone #: Street Address: Email: City/State/Zip Code: Name: Company: Phone #: Street Address: City/State/Zip Code: Email: APPLICANT OR AUTHORIZED AGENT: (See below: Authorization must accompany all applications signed by Authorized Agents) Name: Scott Jay Elery Company: Rocky Mountain Midstream, LLC Phone #: 701-578-4078 Street Address: 1 Williams Center Email: selery67@gmail.com City/State/Zip Code: Tulsa, OK 74172 PROPOSED USE: Construction of the proposed Latham 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 plans submitted with or contained within the application are true and correct to the best of my (our)knowledge. Signatures of all fee owners of property must sign this application. If an Authorized Agent signs, a letter of authorization from all fee owners must be included with the application. If a ca� rp ration is the fee o , notarized evidence must be included indicating that the signatory has to legal authority to rr--for the corporal r1 Sianrae: Owned. -car Authorized Agent Date Signature: Owner or Authorized Agent Date CA-A*777.c; Ltk_ri/iii Print Name Print Name Rev 4/2016 DEPARTMENT OF PLANNING AND BUILDING DEPARTMENT OF PUBLIC HEALTH AND ENVIRONNMENT 1555 NORTH 17TH AVENUE GREELEY, CO 80631 AUTHORIZATION FORM FOR BUILDING, PLANNING AND HEALTH DEPARTMENT PERMITS AND SERVICES I (We) Michael Boulter Farms LLC give permission to Rocky Mountain Midstream LLC (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 # 096127000060 - 12844 PT N2SE4 & S2NE4 27 5 65 N OF CA_ OF UNION DITCH BEG NE COR OF S2NE4 THENCE S8341 MIL W196.48' S25D26W 45.37' 887D56'W 114.32' S46D24'W 116.38' S02D35'E 144.82' TO C/L OF LATHAM DITCH THENCE ALONG C/L SWLY TO N/S C/1_ OF SEC THENCE N1850' MIL THENCE E2640' TO BEG (3D .67R 1.56L) Legal Description: See above of Section 26 , Township 5 N, Range 65 W Subdivision Name: Lot Block Property Owners Information: Phone: E-mail: Applicant/Agent Contact Information: Phone: 701-578-4078 E -Mail: seleryG7@gmail.Com Email correspondence to be sent to: Owner Applican#JAgent X Both Postal service correspondence to be sent to: (choose only one) Owner Applicant/Agent Additional Info: Owner Signature: � • ��iz<,P�� Date. 1- 74217°'!? Owner Signature: Date: AUTHORIZATION FOR BUILDING, PLANNING, PUBLIC WORKS AND HEALTH DEPARTMENT PERMITS AND SERVICES I, Matt Hastings, Director of Operations and Engineerin,g, Rocky Mountain Midstream, LLC, fka Discovery DJ Services, LLC give permission to Scott Jay Elery to apply for any Planning, Building, Public Works and Health Department permits on behalf of Rocky Mountain Midstream, LLC in Adams and Weld County, Colorado. Matt Hastings Director of Operations and Engineering Rocky Mountain Midstream, LLC STATE OF COLORADO COUNTY OF WELD a )9S. Before me, the undersigned Notary Public in and for said County and State, on this 14th day of November, 2018, personally appeared Matt Hastings, Director of Operations and Engineering, Rocky Mountain Midstream, LLC, personally known to me to be the identical person who executed the within and foregoing instrument, and acknowledged to me that he executed the same as his free and voluntary act and deed and as the free and voluntary act and deed of such corporation, for the uses and purposes therein set forth, IN WITNESS THEREOF, I have hereunto set my official signature and affixed my official seal the day and year first above written. My Commission Expires: 10 '' Zie ¶-. tOZ2 e yt.a•i ILJ '•• Notary Public WILLIAM KASEY YOUNG NOTARY PUBLIC STATE OF COLORADO NOTARY ID 20184041913 MV COMMISSION EXPIRES OCTOBER 251a22 Willis �.lete Rocky Mountain Midstream, LLC Proposed Facility: Latham 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 Latham Compressor Station is located between County Road 43 (approximately 2,694 -feet or .51 -miles east of CR 43) and County Road 45 (approximately 1,998 -feet or .38 -miles west of CR 45), and south of County Road 54 (approximately 1,829 -feet or .35 -miles south of CR 54). Access to the compressor station will be located on County Road 43. Approximately ten acres of Parcel Number 09 127000060. A Subdivision Exemption application for the ten -acre site is included with this application. The legal description for Parcel Number 096127000060 is Lot B Recorded Exemption No. 0961- 27-1 RE 760, Recorded August 13, 1985 in Book 1080 at Reception No. 2020613, being a part of the North% of the Southeast% and the South% of the Northeast% of Section 27, Township North, Range 65 West of the 6th P.M., County of Weld, State of Colorado. The site address for the station has not yet been determined. Rocky Mountain Midstream, LLC intends to construct the Latham 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 15,000 ft2, buildings will cover approximately 12,130 ft2, 80000 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. Rocky Mountain Midstream, LLC Proposed Facility: Latham Compressor Station Up top 10 construction trailers and up to 10 Conex storage containers will be required for construction. No construction trailers nor Conex storage containers will be required post - construction. Up to a 60 -foot antenna is proposed for this site. 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 Latham 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 Latham 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 (USRi7-0059 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. 2 Rocky Mountain Midstream, LLC Proposed Facility: Latham Compressor Station 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. 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 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 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. Rocky Mountain Midstream, LLC Proposed Facility: Latham Compressor Station 9. If this is a dairy, livestock confinement operation, kennel, etc., list the number and type of animals. No animals will be on site. 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 15,000 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 flood plain 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: Latham 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 managements 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 37. Traffic will then head south on WCR 43 approximately .38 miles to an existing access. 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.) 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: Latham Compressor Station 5. Describe where the access to the site is planned. From the intersection of WCR 54 and WCR 43, approximately .38 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 th►e 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 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. This is consistent with the Department of Public Health and Environment's portable toilet policy. 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. 6 Rocky Mountain Midstream, LLC Proposed Facility: Latham Compressor Station 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 (La 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. 4. Describe where and how storage and/or stockpile of wastes, chemicals, and/or petroleum will occur on this site. The 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 fr a used oil filters) will also be temporarily stored in containers approved for the waste in question. Clean Harbors (cieanharbors.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 secondarycontainment. 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 Rocky Mountain Midstream, LLC Proposed Facility: Latham Compressor Station 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 CDPHF. 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, 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 ''USIA drawing. Label the use of the building and the square footage. Up to three compressor buildings. The compressor buildings combined cover approximately 12,130 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. Rocky Mountain Midstream, LLC Proposed Facility: Latham Compressor Station 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 US 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 12,130 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. 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. 9 Rocky Mountain Midstream, LLC Proposed Facility: Latham Compressor Station 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. n 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, LL'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. #096127000060) and the entire fall zone for the tower will be located within the proposed Rocky Mountain Midstream, LLC Latham 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. _10- Rocky Mountain Midstream, LLC Proposed Facility: Latham Compressor Station - The proposed tower will be no taller than the minimum height required for adequate signal transmission between Rocky Mountain Midstream, LLW'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. Notice of Inquiry Development within an Intergovernmental Agreement Urban Growth Boundary Pre -application Case # PRE18-0299 Date of Inquiry 11/1/2018 Municipality with CPA or IGA Kersey Name of Person Inquiring Jannice Kinnin or Scott Eiery on behalf of Rocky Mountain Midstream, LLC Property Owner Michael Boulter Farms, LLC Planner Maxwell Nader Planner Phone Number 970-400-3527 Planner Email Address mnader@weldgov.com Legal Description Lot B Recorded R6SW Exemption RE -4971; located in Part S2NW4 of Sect. 27 T5N Parcel Number 096127200070 Nearest Intersection County Road 43 and County Road 54 Type of Inquiry 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 IGA, 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: OfreV, We are not interested in pursuing annexation with this applicant at this time. O We request 21 days from the date of contact to pursue annexation with this applicant. te-9,7 stir 4-4-01,_ t Signature, f Municipality Representative Title azilyee (91/0/ Date Weld County Planning Department 1555 N 17`h Ave, Greeley, Co 60631 - (970) 400-6100 -r (970) 304-6498 Fax Town of Kersey k••+t3�pv Mal 4rt•Mv's al) ;a C"• '+S- as Icr3 rcfra.l5° w ?Le-. ALF. we Pre -application Case # Notice of Inquiry Development within an Intergovernmental Agreement Urban Growth Boundary PRE 1$-0299 Date of Inquiry 11/1/2018 Municipality with CPA or IGA Evans Name of Person Inquiring Property Owner Planner Jannice Kinnin or Scott Elery on behalf of Rocky Mountain Midstream, LLC Michael Boulter Farms, LLC Maxwell Nader Planner Phone Number 970-400-3527 Planner Email Address mnader@weldgov.com Legal Description Parcel Number Lot B Recorded Exemption RE -4971; located in Part S2NW4 of Sect. 27 T5N RGSW 096127200070 Nearest Intersection Type of Inquiry County Road 43 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 ICA, 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: j � ( � � j 9 I We are not interested in pursuing annexation with this applicant at this time. ■ A, We request 21 days from the date of contact to pursue annexation with this applicant. re of Municipally Representative Title Weld County Planning Department 1555 N 17th Aver Greeley, CO 60631 (970) 400-6100 - (970) 304-6496 Fax Latham Compressor Station Weld County Stakeholders Neighborhood Meeting Notice Details Wednesday, October 24, 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 Latham 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 and east WCR 43 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 litoRdiscoverymidstream.corn Latham Compressor Station Latham Compressor Station Community Meeting Wednesday, October 24, 2018 Invite Mailing List Property Owners within 750 feet of Parcel # 096127200€70 Parcel Owner 096127000027 DUMLER EILEEN DUMLER BILL L Mailing Address 25487 COUNTY ROAD 45 GREELEY, CO 806319771 096127000040 HOFF MARK W 21506 COUNTY ROAD 54 GREELEY, CO 806319058 096127000060 MICHAEL BOULTER FARMS LLC 22019 COUNTY ROAD 54 096127200069 GREELEY, CO 806319764 096127000069 MORAN TERESA A 096127000070 MORAN HOWARD L 096127300004 096127200006 MOKRAY BERTHA M JOINT REVOCABLE TRUST MOKRAY STEPHEN E JOINT REVOCABLE TRUST 096127300064 DAVENPORT ROBERT M III 096127300066 SITZMAN LEO J 09612800002 FRANKLIN WILLIAM J 21260 COUNTY ROAD 54 GREELEY, CO 806319058 25970 COUNTY ROAD 43 GREELEY, CO 806319774 25462 COUNTY ROAD 43 GREELEY, CO 806319774 25490 COUNTY ROAD 43 GREELEY, CO 806 319774 25233 COUNTY ROAD 43 GREELEY, CO 806319774 096128000031 LOWER LATHAM RESERVOIR 8209 W 20TH ST, SUITE A COMPANY GREELEY, CO 806344699 096128000035 DIEH L KAREN D 096128100012 SCHAFER DON LEE LIVING TRUST 096128100013 PENN LAWRENCE E 25847 COUNTY ROAD 43 GREELEY, CO 806319774 25835 COUNTY ROAD 43 GREELEY, CO 806319774 PO BOX 538 LA SALLE, CO 806450538 t1/41(411 Vale 10 - • IF DISC o VERY MIDSTREAM PARTNEPS Printed Name (attendee) • int\ c\c„.. 4-4 Ler. octic:vs Facility/Pipeline: j !el lavon i ailing ddress )ci L JZ I oL gay e7 aite/s- i've7 eeNit Community eeting Location: ! 11 f c 30 ci I ktE)/,coContact Numer a ;Az) 7 4/:$ 4/7a. c - ,c14/...2, erne �7 a 33q 70 ta3f1 -zO g`/ 70-4 DISCOVERY October 24, 2018 5:30 pm 7:00 pm Community Meeting Location: Community Meeting Notes Proposed Facility: Latham Compressor Station Cobblestone Inn & Suites 309 Hill Street Kersey, CO 80644 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. : Have you decided on an access location for this site? A: Access has not been finalized. 0: What is the scheduled maintenance of this facility? A: Maintenance at compressor stations can be based on runtime hours for equipment or on an as -needed basis. Engine emissions testing is performed quarterly or annually depending on state and federal req uirements. 0: What is the life of this equipment? A: If maintained anoperated correctly, reciprocal compressors are able to run for decades. 0: How many engines will be at this facility? A: Phase 1 will consist of 3 engines. Phase 2, expected shortly after Phase 1, will consist of another 3 engines. Potentially, two more electric motors could be added in Phase 3. This wouldn't happen for 18 months, if ever. 0: How many engines will be running at any given time? A: All engines on site will be running simultaneously. 0: Will these "compressor" be in buildings? A: Yes, and the buildings will have sound attenuation. 1 DISCOVERY Who approves the design of this facility? A: The station design has been approved internally. Proposed Facility: Latham Compressor Station 0: Where is the gas coming from? A: Extraction will be providing the gas from wellpads further north. 0: When will this facility go on-line? A: Expected in-service date is September -October 2019. 0: How deep are your pipelines? A: Federal requirements are that the depth of cover over pipelines be 36" at the time of installation. 0: What does this facility look like compared to other facilities in the area? A: This will be comparable to other Williams stations in the area. CI: Why are there so many facilities going up in this area? A: Facilities are required to meet the demands of oil and gas development. 0: What kind of lighting will be at this facility? A: On -demand lighting will be installed at this facility outside of enclosed structures, meaning that if the lighting is not needed to perform work or for safety reasons, it will not be in use. 0: Are there any lights on the "tower'? A: There are no red FAA lights on the tower, and no additional lighting is expected. Q: What is the foot print of this site? A: The station property is 10 acres. Of that, 5-6 acres will be developed. Q: How close can your facilities be to a house? A: There are no required setbacks for a facility of this type. Care is taken in the initial selection of site location to maintain as much distance as practical. 0: Explain "pigging" A: A "pig" is a tool to help perform maintenance operations of a pipeline, including cleaning and inspection. The pig flows the length of the pipeline and collects sediment, scale, and liquids. 0: Will you have a stormwater detention pond, if so where? A: We do. Final location is not determined, but it is expected to be in the southwest corner of the site. 0: Do you work 7 days a week? A: Construction will go for 6 days a week, unless project scheduling and execution requires 7 days a week. Once in operation, the site will run 7 days a week. 2 DISCOVERY Proposed Facility: Latham Compressor Station 0: How many loads will be coming into this facility? A: We can expect approximately 60 loads for station equipment. 0: Will there be a flair at this facility? A: There will be a smaller enclosed combustor. The combustor will not have a visible flame. 0: Will there be any landscaping around the facility? A: Landscaping needs and requirements will be decided during the county permitting process. 0: Will you have another meeting to keep us in the loop of what's going on? A: The county permitting process will involve two public meetings, the Planning Case Hearing and the Board of County Commissioners Hearing. Notification of these meetings is the responsibility of the county. More information can be found on the county website. Q: There are wells around this area who do those belong to? A: There are a number of wells associated with a number of different producers. The wells initially feeding these stations are from Extraction. 0: What kind of smell can be expected from this site? A: The site should not emit any odors. 0: Where does the water [from the dehydration process] go? A: The moisture removed from the gas stream stays attached to the glycol after going through the contactor. When the glycol is heated up over the boiling point of water, the water becomes a vapor and is released as steam. 0: Will steam be the only thing coming out of the station? A: Steam and other emissions permitted with the CDPHE. The dehy emissions go through an incinerator and combusts any hazardous air pollutants. 0: How will the construction traffic be while this is being built? A: For the first few weeks, construction will be pretty busy due to dirt and concrete work. After that crews will be coming and going for several months until completion. 0: What is the possibility of an explosion? A: Very rare. All buildings have gas and fire detectors in them. Even the smallest flame or amount of gas released would be sensed and shut down before any explosion would happen. The buildings are ventilated, and Discovery has processes in place to require safe work permits and special permission before welding or cutting can take place inside or near natural gas pipelines and equipment. Q: Will there be someone on -site monitoring this daily? A: Most likely, but daily visits are not always necessary. The technology on this site is very advanced and will allow monitoring by a remote operator. We will also have operations personnel who will come and check on the site during the week. 3 DISCOVERY Proposed Facility: Latham Compressor Station Q: Why can't this be done at the wellhead? A: while some of the needed treating or compression can be accomplished at or near the wellhead (field processing), the complete processing of natural gas takes place at a processing plant, usually located in a natural gas producing region. The extracted natural gas is transported to these processing plants through a network of gathering pipelines. This station provides the compression needed to move the gas from the wellhead to the gas plant. Q: What about dust? A: Dust mitigation efforts during construction include the application of magnesium chloride on the access road and in other areas as needed, as well as enforcement of a 5 MPH speed limit on the access road. Magnesium chloride can be applied as needed to keep traffic dust to a minimum. Q: How much noise are we going to hear on a regular basis? A: As we have done at previous locations, our sound consultant will develop predictive models showing how we will meet Colorado's public noise standards [50 at night and to 55 decibels during day]. We also have equipment to monitor compliance. The plant design includes specific features that minimize noise: For example, the engine/compressor units at the plant are enclosed in an insulated building with sound reduction features. • Horizontal coolers minimize noise. Some of our closest neighbors report that they rarely hear current facility operations, if at all. Even though current operations are in compliance with state and local regulations, we have gone above and beyond by installing additional noise mitigation equipment, including sound blankets. We continue to monitor sound levels and work with our neighbors on specific concerns. 4 DISCOVERY October 2412018 5:30 pm 7:00 pm Community Meeting Location: Community Meeting.. — Missed Parcels Proposed Facility: Latham Compressor Station Cobblestone Inn & Suites 309 Hill Street Kersey, CO 80644 The site for the proposed Latham Compressor Station was originally proposed in parcel 096127200070. Since the community meeting, the proposed location has moved one parcel to the East to parcel 096127000060, per the request of the land owner. The mailing list for the community meeting was generated based on 750' from the original parcel and did not include two parcels, which should be notified per the new location. The parcels are: Parcel # 096127000061 Owner: Deven D Becker Parcel # 096127000028 Owner: William L Dumler Land Agents from Rocky Mountain Midstream are meeting individually with the two above landowners to discuss and review the plans of the proposed Latham Compressor station. 1 Samuel Engineering We Provide Solutions 8450 East Crescent Parkway, Suite 200 Phone: 303.714.4840 Greenwood Village, CO 80111 FAX: 303.714.4800 November 28, 2018 Rocky Mountain Midstream, LLC Auburn Compressor Station Portion of Parcel Number 096127000060 The Latham Compressor Station is an unmanned facility; therefore water supply and Sewer disposal is not proposed for this project site. Bottled watter and Port- o -lets will be provided during construction. Due to being an unmanned facility, no sewer or water will be needed post -construction. 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 Latham Compressor Station Project Number 18293 The Latham Compressor Station is located in the SW 1/4 of the NE 1/4 of Section 27, 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 Mark Skelskey Brandon Primeaux Date: Date: Date: Date: 11/28/18 11/28/18 Rev. Na. By Revisions Approval Date A M. Skelskey Issued for Permit MAS 11/28/18 Engineering • Project Controls • Estimating • Construction Management ROCKY MOUNTAIN MIDSTREAM, LLC LATHAM COMPRESSOR STATION PROJECT NUMBER: 18293 CE -201, REV. A FINAL DRAINAGE REPORT PAGE 1 of 8 DRAINAGE REPORT AND PLAN CERTIFICATION LATHAM COMPRESSOR STATION DRAINAGE REPORT AND PLAN CERTIFICATION "I, Mark Skelskey, Consultant Engineer for Rocky Mountain Midstream, understand and acknowledge that Rocky Mountain Midstream is seeking land use approval of USR13-0XXX for the property described in the attached report. I have designed or reviewed the design of the Latham Compressor Station for the proposed land use set forth in the Application. I hereby certify, on behalf of Applicant that the Design will meet all applicable drainage requirements of the Weld County Code This certification is not a guarantee or warranty either expressed or implied." s V V V Y 13* .O., 6',;e‘ensaststS) /OVAL ,_ • 1, Mark A. Skelskey Registered Professional Engineer State of Colorado No. 39396 Engineering Project Controls Estimating • Construction Management ROCKY MOUNTAIN MIDSTREAM, LL LATHAMCOMPRESSOR STATION PROJECT NUMBER: 18293 CE -201, REV. A FINAL DRAINAGE E EPO .T PAGE of 8 1.0 2.0 Table of Contents DESCRIPTION OF PROJETil..iiia!!iliiiiiililiililiiiilililiiii OD iiliilililii 3 CALCULATIONi!!i!liiiiililiiiili!liii!!i!iliiiiiili!!iliiiil iililiii!!!!!itiO!!iiliililiiiililiii!!!!!iliiiiiili!!i! 2.1 HYDROLOGYf ff....fOfOf 11.1 2.1. 2 2.1.3 2.1.4 Site Soils Design Storm Oft f.. Of Oft f.ffff 0000•• 3 3 .000444040444000444 9 0 9 0 9 4 4 0 0 0 4 4 4 0 0 0 4 4 4 0 0 0 4 4 4 0 0 0 4 4 4 0 0 4 4 4 0 9 0 4 4 4 0 0 0 4 4 4 0 0 0 4 4 4 a 0 4 4 4 0 0 0 4 4 4 4 4 4 0 0 0 4 4 4 0 0 4 4 4. 0 0 0004440004440004 440.0.44 10044404 000440..4 # if O f419 M10044 4700044000. X44000.9 i., i 044 47000440.044400 fY 47 047 Y 4700044 x400 4 Pre-Developme nt and Overall Post -Development Site Imperviousness ............................4 PeakFloWrate Calculations 04444.4440.0444909444090444404044449044100044440044400044409444909040.!0444...444.0444909444.44!. 2.2 DETENTION Pole DESIGN f.f...fff...f.f...MO/ .f....get ..f t. 000...00000.000f....ff•...9.f....,f.. 5 2.2.1 Pond Volume Calculations .......5 2.2.2 Pond Stage -Storage for Discharge Calculations 5 2.2.3 Pond Outlet Structure Design 99944490944400044419044409944449944400 2.3 HYDRAULICS f,.eee 6 2.3.1. Culverts ....4...4,..........4 4,..........4 7 2.3.2 t� �� ...4 .........�.0000. ..........n. OOO 4.0000.....11111.101010.1111•111 .. .. . 7 V� 2.4 GRADING AND DRAINAGE DESIGN O We 9 fff.. 7 3.0 POND MAINTENANCE REQU I RMEN'TS ttt!ltSIITh0th allieHttittttitittiiilititt.tttittttttt■tIMtttttttttttttt 7 3.1 ROUTINE MAINTENANCE 7 3.1.1 Inspections... 31192 Sediment and Debris M,anager9 lent 11000444909444909444.904444400944000444909444490444000444000444004444904449.04440904 8 3i. 1.3 Vegetation Management x.....4•...4.4...x.. �.....4...�.. �....1�e 3.2 NON -ROUTINE MAINTENANCE...4.999fy...9.f 3.2.1 Genera ... 4............ ......................4 3.2.2 Facility Repairs 4.0 CONCLUSION DODO,. 0 f 0999 f 0* 999 Off f 990000 f •• 0999 f 0* 99900 0 f 9 f f ff f 00 f 0 f 09 f 9 f 0 f 999 if 00 SUSS8 0 9 4 4 0 0. 4 4 4 0 0 0 4 4 4 0. 0 4 4 4 0 0 0 4 4 4 0. 0 4 4 4 0 0 0 4 4 4 4 4 0 0 0 1 4 0 0 0 4 4 4 0 0 0 4 4 4 0 0 0 4 4 4 0 0 0 4 4 9 9 0 4 4 4 9. 9 4 4 4 0 0 0 4 4 4$0•4400044400040044400044400 \./' t.....ttt.t...ttttttttttt.ttttt.t..iIIttittttittitttttututitittttttttittititttti ittttltt.t APPENDIX A: VICINITY MAP 4-1 APPENDIX R: MRCS WEB SOIL SURVEY R-1 APPENDIX C: NOAA RAINFALL DATAf4.400044..........i.9444.9.444...4.490940499.44.9.444...4.490044490044909444900000444.....11 APPENDIX D: AREA WEIGHTED IMPERVIOUSNESS VALUES D-1 APPENDIX E: HYDROLOGIC CALCULATIONS 0.4.0004 a.um..a.s....4a 0044000..4...444000444.0.440.04.4909.4.7...•..909440004440090904.7 E-1 APPENDIX F: DETENTION BASIN VOLUME ME BY THE MODIFIED FAA METHOD. .. OO 001444000444 4994.4. F-1 APPENDIX G: DETENTION BASIN STAGE -STORAGE.................. G-1 APPENDIX H: DETENTION BASIN OUTLET STRUCTURE DESIGN .44490.04...0994449.44999944400044.99944404044.90444.0H-1 APPENDIX I: CULVERT DESIGN 9.4.0x...4999444 44400044100444000 OOOO 00444000440004440004440004440004400044400040044400044400040 APPENDIX J: CONSTRUCTION DRAWINGS J-1 Engineering • Project Controls Estimating • Construction Management ROCKY MOUNTAIN MIDSTREAM, LL LATHAMCOMPRESSOR STATION PROJECT NUMBER: 18293 CE -201, REV. A FINAL DRAINAGE E REPORT PAGE 3 of 8 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 6.7 acres of the 10 -acre site. The total area tributary to the detention pond, including the pond area, is 5.98 acres. The project site is located on a leased tract of land which consists mostly of cultivated crops with existing pipeline right-of-ways abutting the lease. Topographic relief over the leased property ranges from 4653.25' on the southwest side of the parcel to 4642.0' depression on the north side of the parcel and is characterized by flat land with grades that measure 0.20%. The subject property is not part of the Weld County Master Drainage Plan. The subject property is not located in a designated floodplain. A private unnamed irrigation ditch is located directly west of the compressor station site. All storm runoff is directed away from this irrigation ditch and into the project detention pond. The union irrigation ditch is located south and uphill of the compressor station site. The Lower Latham Outlet ditch is located east of the site, storm runoff from the site will not impact either ditch The surrounding area development consists mostly of irrigated cropland. Gas and oil wells, tank farms and processing equipment is located on parcels surrounding the site. The closest residential properties are located along County Road 45. See Appendix A for project location and vicinity map. 2.0 CALCULATIONS 2.1 HYDROLOGY The project site drainage is 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 will be detained in a modified 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 value of 2.0%. The detention basin is 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 (MRCS) Web Soil Survey. The entirety of the site soils are Altvan Loam with slopes of 0.0 to 1.0% classified as Engineering Project Controls ♦ Estimating ♦ Construction Management ROCKY MOUNTAIN MIDSTREAM, LL LATHAMCOMPRESSOR STATION PROJECT NUMBER: 18293 CE -201, REV. A FINAL DRAINAGE REPORT PAGE 4 of 8 Hydraulic Soil Group (HS) B. 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. 2.1.2 Design Storm 2.1.3 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 are: 10 -year 1 -hour = 1.41 in 100 -year 1 -hour = 2.72 in Refer to Appendix C for NOAA Atlas 14, volume 8, version 2 Rainfall Data. Pre -Development and Overall Post -Development Site Imperviousness The existing site and surrounding areas that contribute storm runoff consist of irrigated crop 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 well as the detention pond surface. The developed site requires fill material to provide proper drainage. Raising the site will direct any offsite stormwater runoff around the site. The developed site contributing to the detention pond will have a composite imperviousness of 48.05%. The developed pad will drain into perimeter ditches and the site detention pond. 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 LCS-CE-61B, Pre -Developed Drainage Basin Map and LCS- E-611, 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 "UD-Rational v1.02a. is". The proposed site is located north of the Lower Latham Reservoir with the major basin drainage directed to the reservoir. Irrigation ditches and the Union Pacific railroad isolate the site into a Engineering ♦ Project Controls Estimating ♦ Construction Management ROCKY MOUNTAIN MIDSTREAM, LL LATHAMCOMPRESSOR STATION PROJECT NUMBER: 18293 CE -2O1, REV. A FINAL DRAINAGE REPORT PAGE 5 of 8 small sub -basin. The pre -developed major drainage basin (EX -1) will be affected by the new site development by the change in Impervious value. This will be offset by the detention pond. The area tributary to the detention pond has a contributing area of 5.98 acres. Basin EX -1 is undeveloped and has a 10 -year runoff coefficient Cio = 0.17 and a 100 -year runoff coefficient 0100 = 0.36. The resulting existing peak flows at Design Point EX -1 are Q10 = 3.53 cfs and Q1oo = 14.89 cfs. (See Appendix E, Page E-2 and E-3) 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) is determined as this is the maximum allowable discharge rate from the detention pond. The historic peak flow rate calculated for Basin EX -1 (3.53 cfs) will be used the maximum allowable discharge rate from the detention pond. The developed Basin 1-A contributing to the detention pond 10 -year runoff coefficient Cm = 0.40 and a 100 -year runoff coefficient C100= 0.36. The resulting existing peak flows at the detention pond 1 are Qi0= 738 cfs and Q10o = 14.89 cfs. The 100 -year developed peak flow will be used as the design flow for the pond overflow weir. (See Appendix E, Page E-8 and E-9) The developed portion of Basin 1-A contributing to a proposed 12" HDPE double culvert at the site entrance has a calculated flow of Coo = 3.88 cfs. (See Appendix E, Page E-6 and E-7) Detention Pond Design 2.1.5 Pond Volume Ca culations 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 WQCV is determined empirically based on thecontributing basin area and the imperviousness. The required WQCV for the detention pond is 5,748 ft3. (See Appendix Ff Page F-2) The required storage volumes for the design storms are computed using the FAA method. This method allows for a simplistic calculation of required storage volume while restricting the pond outflow to the required allowable peak flowrate of C10-010= 3.53 cfs. These calculations are developed using Urban Drainage and Flood Control District Worksheet "LID -Detention v2.35.xls". The required storage volume for the 10 -year design storm is 19,667 ft3 and the required storage volume for the 100 -year design storm is 23,265 ft . (See Appendix F, Page F-3) 2.1.6 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 constructing a shallow detention pond. Engineering ♦ Project Controls ♦ Estimating ♦ Construction Management ROCKY MOUNTAIN MIDSTREAM, LL LATHAMCOMPRESSOR STATION PROJECT NUMBER: 18293 CE -201, REV. A FINAL DRAINAGE E REPORT PAGE 6 of 8 (See Appendix J 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) 2.1.7 Pond Outlet Structure Design The detention pond will discharge through a flow control structure and 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 WQCV orifice. The WOO/ is intended to have a 40 -hour residence time in the detention pond, therefore the WQCV orifice is for a flowrate of 0.0399 cfs (See Appendix H, Page H-2). With headwater at elevation 46S2.94 ft, the resulting orifice is two 7/8" diameter holes spaced at 3-1/2" with centroid elevations at 4652.61ft, 4652.20 ft. (See Appendix H, Page H-3) It is intended that the runoff volumes above the WQCV up to the 100 -year design storm outflow will be controlled by adding a restrictor plate to the structure discharge pipe, therefore the overflow weir on the outlet structure will not control the flow and no flow control orifices are installed above the WOO/ orifice plate. With headwater at elevation 465330 ft, the bottom of the restrictor plate will be placed at an elevation of 4652.73 ft to maintain a maximum flow rate of 3.53 cfs. The pond is equipped with an overflow spillway to safely pass storm water flow in excess of the design storm volume or failure of the outlet structure. This emergency overflow spillway is designed for the developed 100 -year peak runoff rate of Qhoo = 18.89 cfs while maintaining a flow depth of less than 6" over the spillway elevation. The overflow weir is designed withside slopes at 4H:1V cut to the top of the pond embankment. To maintain a flow depth of less than 6", the spillway must have a width of 20.00 ft. (See Appendix H, H-9) The flow velocity out of the pond discharge pipe is 4.17 cfs which requires the installation of a low tailwater stilling basin. The flow rate is controlled by the 100 -year restrictor plate and the velocity is controlled by flattening the pipe slope. The 12" HOPE outfall pipe has a slope of O.5 which yields a peak velocity of 4.17 ft/s at the maximum flow rate 3.52 cfs. (See Appendix H, Page H-10) 2.2 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 direct flow to the conveyance facilities. The swales will have shallow slopes and low velocity flows. Engineering ♦ Project Controls Estimating ♦ Construction Management ROCKY MOUNTAIN MIDSTREAM, LL LATHAMCOMPRESSOR STATION PROJECT NUMBER: 18293 CE -201, REV. A FINAL DRAINAGE REPORT PAGE 7 of 8 2.2.1 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 thatculverts 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, the culverts on this site will be sized so that no flow occurs over the road for the 10 -year storm and the allowed overtopping during the 100 -year storm will be maintained below 6 -inches. This additional conservatism will ensure that the plant remains accessible even during major storms. The culvert used on this site is not within Weld County road right-of-way. The site culvert sizes are verified using Gently flowmaster which produces hydraulic grade lines and computes the upstream headwater elevation to check for overtopping. Culvert 1 will consist of 2 "a 12" I-IDPE Culverts with flared -end sections and will pass the 10 -year developed flow of 1.46 cfs without overtopping the road. The 100 -year developed flow of 3.88, this flow condition indicates that the road does not overtop. Culvert 1 is properly sized to convey the design storms. (See Appendix I, Pagel -2 and 1-3) 2.2.2 Ditches Perimeter conveyance ditches are utilized in to convey the stormwater runoff to the detention pond. These ditches will receive minimal inflows due to the positioning of the pad near the crest of a natural ridgeline. 2.3 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. Engineering ♦ Project Controls ♦ Estimating ♦ Construction Management ROCKY MOUNTAIN MIDSTREAM, LL LATHAMCOMPRESSOR STATION PROJECT NUMBER: 18293 CE -201, REV, A FINAL DRAINAGE REPORT PAGE 8 of 8 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 excesstrash and debris, poisonous and noxious weeds, contaminants and pollution, rodent holes, standing water harboring insects, and unwanted 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, forebay, trickle channel, 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 to convey 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 predevelopment drainage patterns. With a properly constructed and maintained pond along with the proposed erosion control measures this development will not adversely impact the existing drainage or existing downstream developments. Engineering ♦ Project Controls ♦ Estimating ♦ Construction Management Appendix A: Vicinity Map A B C D E F H ...„. f r, • COf ..e. \ r �' • -'�� IJ NTH` RC}AD 54 r•r .. 1 /._._ w • fit fL._jt NORTH 1" = MUNNAMED 600' / O DITCH 1 A i 1 ; 2 � • 1 ' �e., 1 � • I ' LATHAM > 1 t- CC r. Z o . • U O ' Du7C _. COMPRESSOR STATION . •N .....----• �' fte ..� SEC. .••OD - - 1-.r J r I sew „es...es'. < 4 27 Opp z > p -I. U COUNTY ROAD 52 1 ••-r I •''•� It . I I I c i 1 d iDe SEC. 26 �' N. fleet. N. ehb NI 1 1 SEC. 34 . 11, it SEC. 35 ROAD 50 LOWER LATHAM RESERVOIR 2 -----N\ COUNTYCOUNTY ROAD 50 -5�rbC.1.r1 1C.�1;filA ..Yl i4 •i. i 'Ate minded AA& iris Irc -`will r L q ua+•r tc - u•� ¢r.G: r. Oii..aa.O I;MIa :•_S:al:.ssail-.: cr. I:.z.:AAly. •a:I,r.r ) )• inf.'s. I• Ait;Iill:l(.1, „4 •._u : 5 eightt&I. I• -.;r -el?aru el.::•1_Samuel C C^_.. aIa:ry :I. am (n.::., 5_ eke—toc0. r...7...5,....6„.1 r...A. 3I'AI I:A .11 I4.AAI. riot-,: 1 11.. II;.{. _ ' " it: N. •}. .I.1: FlIrW ROCKY N0LIIJ IAll I '� _ � (j \ Whet ams I�IIC•STREt. 1 LLC: (i f -' _ •"' T —LE PRC=EC NUMBER. J C LaHt•. 1 CO PRESSOR STA-ION Will I ANS D! Bfv..SIPJ I -I El I? C0NPRI—SS ION \'I1dINITf ti1'I•kP 1$� 3 - - ••:�:• �: M1i.43 a 1.l:!l1.. eg-ynv: MA'S I'Milt :- .1_AIl .. WELD CCU It CO DrcAwTNa AUI1BE e. - _ {-•,p r yy �1gi11ee iI1 Engineering Vic R•C✓'Je C-iL!'JUd .1 I:+II E. •'.rar.:wlr Prrk+�l,. till:. er•� FI>•'.II..:'S<<i.; 1=.i:s�17 -i--\II).^_drj AIb:4[ "di'aD I is Pay: 106.71J qtr, •t_•• I'Ala I•C . : . k I I I.: 9 a - ..i + _ :i i •• t 2=S + , I G �: S. •. '1 I ^ I yA t t` _ .. re I• i� a I.+ ... - •• C. I. e::' U' 1914 . .It I'' .1I FP :. -n 1/ICI N ITY J� A k E V I S 1 C A S u /r�� _ /. rr f I' Id E I', L D rt. .r{ Url i P'J V 3 N E V 1 .S.. 1 {} '.J t .1'Ik.•s_L Appendix B: NRCS Web Soil Survey 400 22' 25" N 400 22' 10" N En 529600 529600 A 529670 529670 529740 529740 Hydrologic Soil Group —Weld County, Colorado, Southern Part (Latham Compressor Station) 510 529810 529880 529880 Map Scale: 1:3,320 if printed on A landscape (11" x 8.5") sheet. Meters 0 45 90 180 270 Feet 0 150 300 600 900 Map projection: Web Mercator Corner coordinates: WG584 Edge tics: UTM Zone 13N WG584 529950 529993 530010 530020 530090 5300190 530160 530160 530230 530230 104° 38'34"W 530'.300 40O 22' 25" N 40O 22'10"N USDA Natural Resources al Conservation Service Web Soil Survey National Cooperative Soil Survey 11/13/2018 Page 1 of 4 Hydrologic Soil Group —Weld County, Colorado, Southern Part (Latham Compressor Station) MAP LEGEND Area of Interest (AO!) Area of Interest (AO1) Soils Soil Rating Polygons A A/D B B/D C C/D D Not rated or not available Soil Rating Lines A AID B B/D C/D D 0 Not rated or not available Soil Rating Points ■ • A A/D B B/D O • O C C/D D Not rated or not available Water Features Streams and Canals Transportation Rails orso Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography MAP IN FORMATION The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Weld County, Colorado, Southern Part Survey Area Data: Version 17, Sep 10, 2018 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Jul 17, 2015 —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 am Conservation Service Web Soil Survey National Cooperative Soil Survey 11/13/2018 Page 2 of 4 Hydrologic Soil Group —Weld County, Colorado, Southern Part Latham Compressor Station Hydrologic Soil Group Map unit symbol Map unit name Rating Acres in AOI Percent of AOl 1 Altvan loam, percent slopes 0 to 1 B 42.4 83.4% 21 Dacono 1 clay loam, percent slopes 0 to C 8.5 16.6% Totals for Area of Interest 50.9 100.0% Description Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long -duration storms. The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (AID, BID, and CID). The groups are defined as follows: Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink -swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. If a soil is assigned to a dual hydrologic group (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 USDA Natural Resources Web Soil Survey a Conservation Service National Cooperative Soil Survey 11/13/2018 Page 3 of 4 400 22' 25" N 400 22' 10" N 529600 529670 529740 529610 529880 5299w 530020 5300190 530160 53230 En 529600 A 529670 529740 Unified Soil Classification (Surface) Weld County, Colorado, Southern Part (Latham Compressor Station) 529810 529880 Map Scale: 1:3,320 if printed on A landscape (11" x 8.5") sheet. Meters 0 45 90 180 270 Feet 0 150 300 600 900 Map projection: Web Mercator Corner coordinates: WG584 Edge tics: UTM Zone 13N WG584 529950 530020 530080 530160 530230 104° 38'34"W 530600 530300 en 40O 22' 25" N 40O 22'10"N USDA Natural Resources al Conservation Service Web Soil Survey National Cooperative Soil Survey 11/13/2018 Page 1 of 4 Unified Soil Classification (Surface) Weld County, Colorado, Southern Part (Latham Compressor Station) Area of Interest (AOI) Area of Interest (AOI) Soils Soil Rating Polygons CH CL CL -A (proposed) CL -K (proposed) CL -ML CL -O (proposed) CL -T (proposed) GC GC -G GM GP GP -GC GP -GM OW OW -GC G W -G M MH MH-A (proposed) MH-K (proposed) MH-O (proposed) MH-T (proposed) ML ML -A (proposed) ML -K (proposed) ML -O (proposed) ML -T (proposed) OH OH -T (proposed) OL PT SC SC-SM SM SP SP -SC S P -S M SW SW -SC S W -S M Not rated or not available Soil Rating Lines pave tricot ORO plehou CH CL CL -A (proposed) CL -K (proposed) CL -ML CL -O (proposed) CL -T (proposed) MAP LEGEND GC GC -GM GM GP GP -GC r A GP -GM iskloo emitgO 004310 Oast rovisol ipscitoo Fasit OW OW -GC OW -GM MH MH-A (proposed) MH-K (proposed) MH-O► (proposed) MH-T (proposed) ML ML -A (proposed) ML -K (proposed) ML -O (proposed) ML -T (proposed) OH OH -T (proposed) OL PT SC SC-SM SM SP vaitso SP -SC Eadsto S P -S M pfalino SW Finksi SW -SC ORO S W -S M r tat Not rated or not available Soil Rating Points CH 0 • • • • • • O CL CL -A (proposed) CL -K (proposed) CL -ML CL -O (proposed) CL -T (proposed) GC GC -G GM GP GP -GC GP -GM OW OW -GC G W -G M MH MH-A (proposed) • El • • • El • Ira • • O 0 ■ MH-K (proposed) MH-O (proposed MH-T (proposed) ML ML -A (proposed) ML -K (proposed) M L -O (proposed) ML -T (proposed) OH OH -T (proposed) OL PT SC SC-SM SM SP SP -SC SP-SM SW SW -SC SW-SM ® Not rated or not available Water Features Streams and Canals Transportation Rails USDA Natural Resources is Conservation Service Web Soil Survey National Cooperative Soil Survey 11/13/2018 Page 2 of 4 Unified Soil Classification (Surface) Weld County, Colorado, Southern Part (Latham Compressor Station) MAP INFORMATION Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Weld County, Colorado, Southern Part Survey Area Data: Version 17, Sep 10, 2018 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Jul 17, 2015 —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 am Conservation Service Web Soil Survey National Cooperative Soil Survey 11/13/2018 Page 3 of 4 Unified Soil Classification (Surface) Weld County, Colorado, Southern Part Latham Compressor Station Unified Soil Classification (Surface) Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 1 Altvan loam, percent slopes 0 to 1 CL 42.4 83.4% 21 Dacono 1 clay loam, percent slopes 0 to CL 8.5 16.6% Totals for Area of Interest 50.9 100.0% Description The Unified soil classification system classifies mineral and organic mineral soils for engineering purposes on the basis of particle -size characteristics, liquid limit, and plasticity index. It identifies three major soil divisions: (i) coarse -grained soils having less than 50 percent, by weight, particles smaller than 0.074 mm in diameter; (ii) fine-grained soils having 50 percent or more, by weight, particles smaller than 0.074 mm in diameter; and (iii) highly organic soils that demonstrate certain organic characteristics. These divisions are further subdivided into a total of 15 basic soil groups. The major soil divisions and basic soil groups are determined on the basis of estimated or measured values for grain -size distribution and Atterberg limits. ASTM D 2487 shows the criteria chart used for classifying soil in the Unified system and the 15 basic soil groups of the system and the plasticity chart for the Unified system. The various groupings of this classification correlate in a general way with the engineering behavior of soils. This correlation provides a useful first step in any field or laboratory investigation for engineering purposes. It can serve to make some general interpretations relating to probable performance of the soil for engineering uses. For each soil horizon in the database one or more Unified soil classifications may be listed. One is marked as the representative or most commonly occurring. The representative classification is shown here for the surface layer of the soil. Rating Options Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie -break Rule: Lower Layer Options (Horizon Aggregation Method): Surface Layer (Not applicable) USDA Natural Resources Web Soil Survey a Conservation Service National Cooperative Soil Survey 11/13/2018 Page 4 of 4 Appendix C: NOAH Rainfall Data Precipitation Frequency Data Server Page 1 of 3 NOAA Atlas 14, Volume 8, Version 2 Location name: Greeley, Colorado, USA* Latitude: 40.371 °, Longitude: -104.6483° Elevation: 4652.65 ft** * source: ESRI Maps ** source: USGS POINT PRECIPITATION FREQUENCY ESTIMATES Sanja Perica, Deborah Martin, Sandra Pavlovic, Ishani Roy, Michael St. Laurent, Carl Trypaluk, Dale Unruh, Michael Yekta, Geoffery Bonnin NOAA, National Weather Service, Silver Spring, Maryland PF tabular I PF graphical I Maps & aerials PF tabular PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches)1 Duration 5 -min 10 -min 15 -min 30 -min 60 -min 2 -hr 3 -hr 6 -hr 12 -hr 24 -hr 2 -day 3 -day 4 -day 7 -day 70 -day 20 -day 30 -day 45 -day 60 -day Average recurrence interval (years) 1 0.243 (0.201-0.296) 0.356 (0.295-0.433) 0.434 (0.360-0.529) 0.582 (0.483-0.710) 0.723 (0.600-0.882) 0.865 (0.722-1.05) 0.948 (0.794-1.14) 1.09 (0.917-1.30) 1.27 (1.08-1.50) 1.51 (1.29-1.78) 1.74 (1.50-2.03) 1.91 (1.65-2.21) 2.03 (1.76-2.35) 2.31 (2.01-2.65) 2.55 (2.23-2.91) 3.26 (2.87-3.69) 3.83 (3.39-4.32) 4.51 (4.01-5.07) 5.07 (4.52-5.67) 2 0.293 (0.243-0.358) 0.430 (0.356-0.524) 0.524 (0.434-0.639) 0.702 (0.582-0.857) 0.860 (0.712-1.05) 1.02 (0.849-1.23) 1.10 (0.924-1.33) 1.28 (1.08-1.53) 1.51 (1.28-1.79) 1.78 (1.52-2.09) 2.06 (1.77-2.40) 2.22 (1.92-2.58) 2.36 (2.04-2.73) 2.69 (2.35-3.09) 2.98 (2.61-3.41) 3.77 (3.32-4.28) 4.40 (3.90-4.97) 5.19 (4.61-5.83) 5.85 (5.21-6.55) 5 0.390 (0.322-0.478) 0.571 (0.471-0.700) 0.697 (0.575-0.853) 0.933 (0.770-1.14) 1.14 (0.936-1.39) 1.34 (1.11-1.62) 1.44 (1.20-1.74) 1.67 (1.40-2.01) 1.97 (1.66-2.34) 2.27 (1.93-2.68) 2.61 (2.24-3.05) 2.78 (2.39-3.24) 2.92 (2.52-3.40) 3.34 (2.90-3.85) 3.69 (3.22-4.24) 4.60 (4.03-5.23) 5.32 (4.69-6.03) 6.26 (5.54-7.05) 7.07 (6.28-7.94) 10 0.484 (0.396-0.596) 0.708 (0.580-0.872) 0.864 (0.707-1.06) 1.16 (0.948-1.43) 1.41 (1.15-1.74) 1.66 (1.37-2.03) 1.79 (1.48-2.17) 2.07 (1.72-2.49) 2.40 (2.01-2.87) 2.73 (2.30-3.24) 3.11 (2.64-3.65) 3.28 (2.80-3.84) 3.43 (2.94-4.01) 3.90 (3.36-4.51) 4.29 (3.71-4.95) 5.27 (4.59-6.03) 6.07 (5.31-6.91) 7.11 (6.25-8.05) 8.03 (7.09-9.07) 2 I 0.632 (0.503-0.837) 0.925 (0.737-1.23) 1.13 (0.899-1.50) 1.52 (1.21-2.01) 1.86 (1.49-2.48) 2.21 (1.78-2.93) 2.38 (1.94-3.15) 2.72 (2.22-3.54) 3.08 (2.51-3.94) 3.43 (2.82-4.32) 3.84 (3.16-4.76) 4.03 (3.33-4.96) 4.18 (3.47-5.13) 4.69 (3.89-5.66) 5.12 (4.26-6.13) 6.18 (5.17-7.29) 7.06 (5.92-8.27) 8.23 (6.93-9.57) 9.29 (7.84-10.7) 50 0.762 (0.585-1.02) 1.12 (0.856-1.49) 1.36 (1.04-1.82) 1.83 (1.41-2.45) 2.27 (1.74-3.05) 2.70 (2.10-3.61) 2.92 (2.28-3.89) 3.30 (2.59-4.34) 3.67 (2.89-4.74) 4.03 (3.20-5.15) 4.45 (3.56-5.60) 4.64 (3.72-5.80) 4.80 (3.87-5.97) 5.32 (4.30-6.53) 5.76 (4.67-7.01) 6.86 (5.60-8.25) 7.80 (6.38-9.30) 9.05 (7.45-10.7) 10.2 (8.41-12.0) 100 0.905 (0.663-1.25) 1.33 (0.971-1.83) 1.62 (1.18-2.23) 2.18 (1.60-3.01) 2.72 (2.00-3.76) 3.26 (2.42-4.48) 3.53 (2.64-4.84) 3.96 (2.97-5.35) 4.31 (3.26-5.74) 4.69 (3.57-6.16) 5.10 (3.91-6.60) 5.30 (4.08-6.81) 5.46 (4.22-6.99) 5.97 (4.63-7.54) 6.41 (4.99-8.03) 7.54 (5.91-9.32) 8.51 (6.71-10.5) 9.84 (7.79-12.0) 11.1 (8.78-13.4) 200 1.06 (0.739-1.52) 1.56 (1.08-2.22) 1.90 (1.32-2.71) 2.57 (1.78-3.66) 3.23 (2.24-4.61) 3.89 (2.73-5.51) 4.24 (2.99-5.98) 4.69 (3.34-6.55) 5.03 (3.60-6.90) 5.40 (3.91-7.32) 5.80 (4.22-7.75) 6.00 (4.39-7.97) 6.17 (4.53-8.15) 6.65 (4.91-8.67) 7.07 (5.24-9.14) 8.21 (6.14-10.5) 9.22 (6.93-11.7) 10.6 (8.01-13.3) 11.9 (9.00-14.8) 500 1.30 (0.855-1.91) 1.90 (1.25-2.79) 2.32 (1.53-3.40) 3.13 (2.07-4.60) 3.98 (2.63-5.86) 4.82 (3.22-7.05) 5.28 (3.55-7.68) 5.79 (3.92-8.31) 6.06 (4.14-8.58) 6.43 (4.43-8.99) 6.78 (4.71-9.35) 6.99 (4.89-9.58) 7.15 (5.02-9.76) 7.57 (5.35-10.2) 7.95 (5.64-10.6) 9.07 (6.50-12.0) 10.1 (7.28-13.2) 11.6 (8.37-15.0) 12.9 (9.35-16.6) 1000 1.49 (0.943-2.20) 2.18 (1.38-3.22) 2.66 (1.68-3.93) 3.60 (2.28-5.32) 4.60 (2.92-6.81) 5.61 (3.59-8.21) 6.16 (3.97-8.97) 6.70 (4.36-9.65) 6.91 (4.54-9.85) 7.27 (4.83-10.3) 7.56 (5.08-10.6) 7.78 (5.26-10.8) 7.95 (5.40-11.0) 8.30 (5.68-11.4) 8.62 (5.94-11.7) 9.71 (6.77-13.1) 10.8 (7.55-14.4) 12.2 (8.63-16.3) 13.6 (9.61-18.0) I Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS). Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates (for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds are not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values. Please refer to NOAA Atlas 14 document for more information. Back to Top https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.htm1?1afr4O.3 710&ion--104.6483&.data=depth&units=english&series=pds 11/15/2018 Precipitation Frequency Data Server Page 2 of 3 PF graphical PDS-based depth -duration -frequency (DDT) curves Latitude: 40.3710, Longitude: -104.648r i= c •6 LA �I 2 C • th 5 10 NOAA Atlas 14, Volume B, Version 2 rr kob las r-1 Duration >6 >6 > rD r15 N 25 50 100 200 Average recurrence interval (years) ri3 ft:5 r13 r13 T 0 -O © C} Ui 0 if t up 500 1000 Created) (GMT): Thu Nov 15 16:29:42 2018 Back to Top Maps & aerials small scale terrain 3km 2mi Lower Lathan, Reservoir Wei count . Ind 5. 1, 11/41% EAS-raiti VALLEY VIEW rg--0 .d, ippnQr 1 Pilferage recurrence interval (years) 1 2 5 10 25 50 100 20O 500 10O0 Duration 5 -min 2 -clay in -min 15 -min 4 -day 3G -min — 7 -day 6O —mm — 10 -day 2 -hr 20 -day 3 -hr 3O -day 6- r 45 -day 12=hr 6n --day nAikk . CM -111 https./ihd c.nws.noaa. ov/hdscipfds/p ds_printpage. html?lat=40.3 71081on=-104.6483 da =dept i&.units=en li h&series=pds 11/15/2018 Precipitation Frequency Data Server Page 3 of 3 Large scale terrain a. r• 0 arl • Lhevenne I;h ci -L Fortcoll ins • -4:j-- siG r e el ey 1 I, . Hi , L°ny ant Er.irIier 100 Li Denver _ I Large scale map Large scale aerial .hc..'verine Fort Collins. Denver � + r 100km I / ' 60mr r i ■ t 1 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?: HDSC.Questionsnoaa.gov Disclaimer https:/ihd c.nws.noaa. ov/hdse/pfds/p ds_printpage. html?lat=40.3 71081on=-104.6483&da =dept i&units=en li h&series=pds 11/15/2018 Appendix D: Area Weighted Imperviousness Values AREA WEIGHTED IMPERVIOUSNESS VALUES Rocky Mountain Midstream, LLC Latham Compressor Station East of County Road 43 & South of County Road 58 Sec 27, TS 5N, R 65W HISTORIC CONDITIONS Surface Characteristic Undeveloped (Trib to Pond) Basin 1 A, acre I, % Al 5.98 2 11.96 Atotah acre Iweightedi Q 5.98 2.0 DEVELOPED CONDITIONS TRIBUTARY TO POND Surface Characteristic Basin 1A A, acre I, % Al Roofs Equipment Recycled Asphalt Gravel Surface Road base Detention Pond Bare Ground Undeveloped Landscape - Reclaimed 0.31 0.22 0.00 2.66 1.01 0.87 0.22 0.00 0.69 Atotar, acre 0 weighted, o 90 90 80 40 40 100 20 2 2 27.99 19.80 0.00 106.40 40.40 87.00 4A0 0.00 1.38 5.98 46.05 T3 He RO-i—Recanrnended Percentage Imperviousnes.s. Values Land Use or :Mace Characteristics Percentage rn pe r cuss .ss 2_ _ss: Corr zl=r- al .-eas 95 trpleighborhecci areas. a5 Resident : W ,; o=.-_+ r �il , s Multi -unit (detached) 80 it lulti ni$ (atdached: 75 Half -acre lot or larger t Apartments 80 Industrial: _ --areas 80 -leaiy areas 90 Parks cemeteries 5 P ay rour s 10 Schools .-r Railroad yard areas lei Undeveloped Areas: Historic flcw analysts _. 3reenbl— -J 3. air•cukizi 01 1's ibG flowJr - °ei . 5 -;when land ase nc: de f ;d) `. Streets: Paved 10D 3ravel (packed) 40 _'rive and wwa ks goi 9oufs _awns. s ncy soil 0 Lawns. clayey soil 0 ' See Figures. RO-3 through RD -5 tar percentage it ipen:- Os, sness_ Appendix E: Hydrologic Calculations CALCULATION OF A PEAK RUNOFF USING RATIONAL METHOD Project Title: Catchment ID: Latham Compressor Station (18283-01) 10-Yr Predeveloped Area Tributary to Detention Pond I. Catchment Hydrologic Data Catchment ID = Area = Percent Imperviousness = NRCS Soil Type = 1A 6.70 2.00 B Acres A, B, C, or D II. Rainfall Information I (inch/hr) = Cl * P1 /(C2 + Td)"C3 Design Storm Return Period, Tr = 01= C2= C3= P1= 10 28.50 10.00 0.786 1.41 years (input return period for design storm) (input the value of 01) (input the value of 02) (input the value of 03) inches (input one -hr precipitation —see Sheet "Design Info") III. Analysis of Flow Time (Time of Concentration) for a Catchment Runoff Coefficient, C = Overide Runoff Coefficient, C = 5-yr. Runoff Coefficient, C-5 = Overide 5-yr. Runoff Coefficient, C = 0.17 0.08 (enter an overide C value if desired, or leave blank to accept calculated C.) (enter an overide C-5 value if desired, or leave blank to accept calculated C-5.) Illustration LEGEND O Beginning Flow Direction Cateh ent Boundary N RCS Land Type Conveyance Heavy Meadow 2.5 Tillage/ Field 5 Short Pasture/ Lawns 7 Nearly Bare Ground 10 Grassed Swalesf Waterways 15 Paved Areas & Shallow Paved Swales (Sheet Flow) 20 Calculations: Reach Slope Length 5-yr N RCS Flow ID S L Runoff Convey- Velocity Coeff ance V ft/ft ft C-5 fps input input output input output Flow Time Tf minutes output Overland 0.0021 938 0.08 N/A 0.17 93.81 1 2 3 4 Sum 938 IV. Peak Runoff Prediction Rainfall Intensity at Computed Tc, I =- Rainfall Intensity at Regional Tc, I = Rainfall Intensity at User -Defined Tc, I = 1.05 inch/hr 3.18 inch/hr 3.18 inch/hr Computed Tc = Regional Tc = User -Entered Tc = Peak Flowrate, Qp = Peak Flowrate, Qp = Peak Flowrate, Qp = 93.81 15.21 15.21 1.16 cfs 3.53 cfs 3.53 cfs 10 yr runoff-PreDeveloped.xls, Tc and PeakQ 11/29/2018, 1:45 PM CALCULATION OF A PEAK RUNOFF USING RATIONAL METHOD Project Title: Catchment ID: Latham Compressor Station (18283-01) 100-Yr Predeveloped Major Basin I. Catchment Hydrologic Data Catchment ID = 1A Area = 122.76 Acres Percent Imperviousness = 2.00 a./% NRCS Soil Type = B A, B, C, or D For catchments larger than 90 acres, CUHP hydrograph and routing are recommended. II. Rainfall Information Design Storm Return Period, Tr = 01= C2= 03= P1= I (inch/hr) = Cl * P1 /(C2 + Td)"C3 10 28.50 10.00 0.786 2.72 years (input return period for design storm) (input the value of 01) (input the value of O2) (input the value of O3) inches (input one -hr precipitation —see Sheet "Design Info") III. Analysis of Flow Time (Time of Concentration) for a Catchment Runoff Coefficient, C = Overide Runoff Coefficient, C = 5-yr. Runoff Coefficient, C-5 = Overide 5-yr. Runoff Coefficient, C = 0.17 0.08 (enter an overide C value if desired, or leave blank to accept calculated C.) (enter an overide C-5 value if desired, or leave blank to accept calculated C-5.) Illustration overland Reach 1 flour L E GENII 4L a lle2 rn t ng Bow D int lid n Cate hirte nt B oundary NRCS Land Type Conveyance Heavy Meadow 2.5 Tillage/ Field 5 Short Pasture/ Lawns 7 Nearly Bare Ground 10 Grassed Swales/ Waterways 15 Paved Areas & Shallow Paved Swales (Sheet Flow) 20 Calculations: Reach ID Overland Slope S ft/ft input Length L ft input 5-yr Runoff Coeff C-5 output NRCS Convey- ance input Flow Velocity V fps output Flow Time Tf minutes output 0.0018 4,468 0.08 1 2 3 4 5 Sum 4,468 IV. Peak Runoff Prediction Rainfall Intensity at Computed Tc, I Rainfall Intensity at Regional Tc, I = Rainfall Intensity at User -Defined Tc, I = 1.09 inch/hr 3.90 inch/hr 3.90 inch/hr N/A 0.34 216.84 Computed Tc = Regional Tc = User -Entered Tc = Peak Flowrate, Qp = Peak Flowrate, Qp = Peak Flowrate, Qp = 216.84 34.82 34.82 22.16 cfs 79.27 cfs 79.27 cfs 100 yr runoff -P reDeveloped.xls, Tc and PcakO 11/29/2018, 10:35 AM CALCULATION OF A PEAK RUNOFF USING RATIONAL METHOD Project Title: Catchment ID: Latham Compressor Station (18293-01) 10-Yr Developed Tributary to Pond I. Catchment Hydrologic Data Catchment ID = Area = Percent Imperviousness = NRCS Soil Type = 1-A 5.98 48.05 B Acres A, B, C, or D II. Rainfall Information I (inch/hr) = Cl * P1 /(C2 + Td)"C3 Design Storm Return Period, Tr = 01= C2= C3= P1= 10 28.50 10.00 0.786 1.41 years (input return period for design storm) (input the value of 01) (input the value of 02) (input the value of 03) inches (input one -hr precipitation —see Sheet "Design Info") III. Analysis of Flow Time (Time of Concentration) for a Catchment Runoff Coefficient, C = Overide Runoff Coefficient, C = 5-yr. Runoff Coefficient, C-5 = Overide 5-yr. Runoff Coefficient, C = 0.40 0.34 (enter an overide C value if desired, or leave blank to accept calculated C.) (enter an overide C-5 value if desired, or leave blank to accept calculated C-5.) Illustration LEGEND O Beginning Flow Direction Cateh ent Boundary N RCS Land Type Conveyance Heavy Meadow 2.5 Tillage/ Field 5 Short Pasture/ Lawns 7 Nearly Bare Ground 10 Grassed Swalesf Waterways 15 Paved Areas & Shallow Paved Swales (Sheet Flow) 20 Calculations: Reach Slope ID S ft/ft input Length 5-yr N RCS Flow L Runoff Convey- Velocity Coeff ance V ft C-5 fps input output input output Flow Time Tf minutes output Overland 0.0025 400 0.34 N/A 0.15 43.44 1 0.0035 340 2 3 4 Sum 740 IV. Peak Runoff Prediction Rainfall Intensity at Computed Tc, I =- Rainfall Intensity at Regional Tc, I = Rainfall Intensity at User -Defined Tc, I = 1.55 3.29 3.29 inch/hr inch/hr inch/hr 10.00 0.59 9.58 Computed Tc = Regional Tc = User -Entered Tc = Peak Flowrate, Qp = Peak Flowrate, Qp = Peak Flowrate, Qp = 53.02 14.11 14.11 3.66 7.78 7.78 cfs cfs cfs 10 yr-Developed Tributary to Pond.xls, Tc and PeakQ 11/29/2018, 10:34 AM CALCULATION OF A PEAK RUNOFF USING RATIONAL METHOD Project Title: Catchment ID: Latham Compressor Station (18293-01) 100-Yr Developed Tributary to Pond I. Catchment Hydrologic Data Catchment ID = Area = Percent Imperviousness = NRCS Soil Type = 1-A 5.98 48.05 B Acres A, B, C, or D II. Rainfall Information I (inch/hr) = Cl * P1 /(C2 + Td)"C3 Design Storm Return Period, Tr = 01= C2= C3= P1= 100 28.50 10.00 0.786 2.72 years (input return period for design storm) (input the value of 01) (input the value of 02) (input the value of 03) inches (input one -hr precipitation —see Sheet "Design Info") III. Analysis of Flow Time (Time of Concentration) for a Catchment Runoff Coefficient, C = Overide Runoff Coefficient, C = 5-yr. Runoff Coefficient, C-5 = Overide 5-yr. Runoff Coefficient, C = 0.52 0.34 (enter an overide C value if desired, or leave blank to accept calculated C.) (enter an overide C-5 value if desired, or leave blank to accept calculated C-5.) Illustration LEGEND O Beginning Flow Direction Cateh ent Boundary N RCS Land Type Conveyance Heavy Meadow 2.5 Tillage/ Field 5 Short Pasture/ Lawns 7 Nearly Bare Ground 10 Grassed Swalesf Waterways 15 Paved Areas & Shallow Paved Swales (Sheet Flow) 20 Calculations: Reach Slope ID S ft/ft input Length 5-yr N RCS Flow L Runoff Convey- Velocity Coeff ance V ft C-5 fps input output input output Flow Time Tf minutes output Overland 0.0025 400 0.34 N/A 0.15 43.44 1 0.0035 340 2 3 4 Sum 740 IV. Peak Runoff Prediction Rainfall Intensity at Computed Tc, I =- Rainfall Intensity at Regional Tc, I = Rainfall Intensity at User -Defined Tc, I = 2.99 6.35 6.35 inch/hr inch/hr inch/hr 10.00 0.59 9.58 Computed Tc = Regional Tc = User -Entered Tc = Peak Flowrate, Qp = Peak Flowrate, Qp = Peak Flowrate, Qp = 53.02 14.11 14.11 9.25 19.69 19.69 cfs cfs cfs 100 yr-Developed Tributary to Pond.xls, Tc and Peak() 11/29/2018, 1:47 PM Perimiter V -Ditch Capacity Project Description Friction Method Solve For Manning Formula Discharge Input Data Roughness Coefficient Channel Slope Normal Depth Left Side Slope Right Side Slope 0.020 0.00400 0.88 2.00 10.00 ftlft ft ftlft (H:V) ftlft (H:V) Results Discharge Flow Area Wetted Perimeter Hydraulic Radius Top Width Critical Depth Critical Slope Velocity Velocity Head Specific Energy Froude Number Flow Type GVF Input Data Downstream Depth Length Number Of Steps GVF Output Data Upstream Depth Profile Description Profile Headloss Downstream Velocity Upstream Velocity Normal Depth Critical Depth Channel Slope Critical Slope Subcritical 12.25 4.59 10.75 0.43 10.50 0.76 0.00829 2.67 0.11 0.99 0.71 ft31s ft2 ft ft ft ft ftlft ft/s ft ft 0.00 ft 0.00 ft 0 0.00 ft 0.00 Infinity Infinity 0.88 0.76 0.00400 0.00829 ft ft/s ft/s ft ft ftlft ft/ft 1112812018 5:35:13 PM Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster V8i (SELECTseries 1) [08.11.01.03] 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 1 of 1 Appendix F: Detention Basin Volume by the Modified FAA Method DETENTION VOLUME BY THE MODIFIED FAA METHOD Project: Latham Compressor Station - Rocky Mountain Midstream Basin ID: Tributary to Pond with 10 -Year Release Rate (For catchments less than 160 acres only. For larger catchments, use hydrograph routing method) (NOTE: for catchments larger than 90 acres, CUHP hydrograph and routing are recommended) Determination of MINOR Detention Volume Using Modified FAA Method Determination of MAJOR Detention Volume Using Modified FAA Method Design Information (Input): Design Information (Input): Catchment Drainage Imperviousness la = 48.05 percent Catchment Drainage Imperviousness la = 48.05 percent Catchment Drainage Area A = 5.980 acres Catchment Drainage Area A = 5.980 acres Predevelopment NRCS Soil Group Type = B A, B, C. or D Predevelopment NRCS Soil Group Type = B A, B, C, or D Return Period for Detention Control T = 10 years (2, 5, 10, 25, 50, or 100) Return Period for Detention Control T = 100 years (2, 5, 10, 25, 50, or 100) Time of Concentration of Watershed Tc = 15 minutes Time of Concentration of Watershed Tc = 15 minutes Allowable Unit Release Rate q = 0.00 cfstacre Allowable Unit Release Rate q = 0.59 cfslacre One -hour Precipitation P1 = 1.41 inches One -hour Precipitation Pi = 2.72 inches Design Rainfall IDF Formula i = C1'' P11(C2+TJAC3 Design Rainfall IDF Formula i = C1' P1r(C2+T0)^C3 Coefficient One C. = 28.50 Coefficient One elm 28.50 Coefficient Two C2 = 10 Coefficient Two O2 = 10 Coefficient Three Cs = 0.789 Coefficient Three C3 = 0.789 Determination of Average Outflow from the Basin (Calculated ): Determination of Average Outflow from the Basin (Calculated): Runoff Coefficient C = 0.40 Runoff Coefficient C 2 0.52 Inflow Peak Runoff Qp-in - 7.53 oft Inflow Peak Runoff Op -in 2 18.89 cfs Allowable Peak Outflow Rate Qp-out = 0.00 cfs Allowable Peak Outflow Rate Epp -out = 3.53 cfs Mod. FAA Minor Storage Volume = 19.667 cubic feet Mod. FAA Major Storage Volume = 23.265 cubic feet Mod. FAA Minor Storage Volume = 0.451 acre -ft mod. FAA Major Storage Volume = 0.534 acre -ft 6 c- Enter Rainfall Duration Incremental Increase Value Here (e.g. 5 for 5 -Minutes) Rainfall Duration minutes (input) Rainfall Intensity inches f hr (output) Inflow Volume acre-feet (output) Adjustment Factor "m" (output) Average Outflow cfs (output) Outflow Volume acre-feet (output) Storage Volume acre-feet (output) Rainfall Duration minutes );input) Rainfall Intensity hches 1 hr (output) Inflow Volume acre-feet (output) Adjustment Factor "m" (output) Average Outflow cfs (output) Outflow Volume acre-feet (output) Storage Volume acre-feet (output) 10 3.78 0.125 1.00 0.00 0.000 0.125 10 7.29 0.312 1.00 3.53 0.049 0.264 16 3.07 0.162 0.98 0.00 0.000 0.162 16 5.93 0.406 0.98 3.44 . 0.078 0.330 22 2.61 0.189 0.85 0.00 0.000 0.189 22 5.43 0.474 0.85 2.99 0.090 0.384 28 2.28 0.210 0.77 0.00 0.000 0.210 28 4.40 0.527 0.77 272 0.'105 0422 34 3.91 D.570 0.72 2.55 0.120 0.450 34 2.03 0.227 0.72 0.00 0.000 0.227 40 '1.83 0.242 0.69 0.00 0.000 0.242 4D 3.54 D.606 0.69 2.44 0.134 0,472 48 1.68 0.254 0,67 0.00 0.000 0.254 46 3.24 0.638 0.87 2.35 0.149 0.489 52 1.55 0.265 0.65 0.00 0.000 0.265 52 2.99 0.665 0.55 2.28 0.163 0.502 58 1.44 0.275 0.63 0.00 0.00D 0.275 58 .2.78 0.690 0.63 2..23 0.178 0.512 64 1.35 0.284 0.62 0.00 0000 0.254 64 2.60 0.712 0.62 2.18 0.193 0.520 70 '1.27 0.292 _ 0.81 0.00 0.000 0.292 70 2.44 0.732 4.61 2.18 0.207 0.525 76 '1.20 0.299 0.60 0.00 0.000 0.299 78 2.31 0.751 0.80 212 0.222 0.529 82 1.13 0.308 0.59 0.00 0.000 0.306 82 2.19 0.768 0.59 2.09 0.238 0.532 88 1.08 0.313 0.59 0.00 0.000 0.313 88 2.08 0.784 0.59 2.07 0.251 0.534 94 1.03 0.319 0.58 0.00 0.000 0.319 94 1.99 0.800 0.58 2.05 0.266 0.534 100 0.98 0.325 0.58 0.00 0.000 0.325 100 1.00 0.814 0.58 2.03 0.280 0.534 106 0.94 0.330 0.57 0.00 0.000 0.330 106 1.82 0.827 4.57 2.02 0.295 0.533 112 0.91 0.335 0.57 0.00 0.000 0.335 112 1.75 0.840 0.57 2.00 0.309 0.531 118 0.87 0.340 0.56 0.00 0.000 0.340 118 1.69 0.852 0.56 1.99 0.324 0.528 124 0.84 0.344 0.56 0.00 0.000 0.344 124 1.63 0.884 0.56 1.98 0.338 0.525 130 0.81 0.349 0.56 0.00 0.000 D.349 130 1.57 0.875 0.56 1.97 0.353 0.522 138 0.79 0.353 0.58 0.00 0.000 0.353 136 1.52 0.885 0.56 1.96 0.388 0.518 142 1.47 0.895 0.55 1.95 0.382 0.513 142 0.76 0.357 0.55 0.00 0.000 0.357 148 0.74 0.361 0.55 0.00 0.000 0.361 148 1.43 0.905 0.55 1.95 0.397 0.508 154 0.72 0.365 0.55 0.00 0.000 0.385 154 1.39 0.915 0.55 1.94 0.411 0.503 160 1.35 0.924 0.55 1.93 0.428 0.498 160 0.70 0.368 0.55 0.00 0.000 0.368 166 1.31 0.932 0.55 1.93 0.441 0.492 166 0.68 0.372 0.55 0.00 0.000 0.372 172 0.68 0.375 0.54 0.00 0.000 0.375 172 1.28, 0.941 0.54 1.92 0.455 0.486 178 0.85 0.378 D.54 0.00 0.000 0.378 178 124 0.949 0.54 1.92 0.470 0.479 184 0.63 0.382 0.54 0.00 0.000 0.382 184 121 D.957 0.54 1.91 0.484 0.473 190 0.81 0.385 0.54 0.00 0.000 0.385 "190 1.19 0.965 0.54 1.91 0.499 0.466 196 0.80 0.388 0.54 0.00 0.000 0.388 198 1.16 D.972 0.54 1.90 0.513 0459 202 0.59 0.391 0.54 0.00 0.00D 0.391 202 1.13 0.980 0154 1.90 0.528 0,452 208 0.57 0.393 0.54 0.00 0.000 0.393 208 111 0.987 0,54 1.89 0.543 0.444 214 0.56 0.396 _ 0.54 0.00 0.000 0.396 214 1.08 0.994 0.54 1.89 0.557 0.436 220 0.55 0.399 0.53 0.00 0.000 0.399 220 1.06 1.000 0.53 1.89 0.572 0.429 228 0.54 0.402 0.53 0.00 0.000 0.402 228 1.04 1.007 0.53 1.88 0.588 0.421 232 0.53 0.404 0.53 0.00 0.000 D.404 232 1.02 1.014 0.53 1.88 D.601 0.413 238 1.00 1.020 0.53 1.88 0.618 0,404 238 0.52 0.407 0.53 0.00 0.000 D.407 244 0.51 0.409 0.53 0.00 0.000 0.409 244 0.98 1.025 053 1.88 0.630 0396 250 0.50 0.412 0.53 0.00 0.000 0.412 250 0.96 1.032 0.53 1.87 D.645 0.387 256 0.49 0.414 0.53 0.00 0.000 0.414 256 0.95 1.038 0.53 1.87 0.1859 0.379 262 048 0418 0.53 0.00 0.000 0.418 282 0.93 1.04.4 0.53 1.87 0874 0.370 268 0.47 0.418 0.53 0.00 0.000 0.418 268 0.91 1.049 0.53 1.87 0.689 0.381 274 0.47 0.421 0.53 0.00 0.000 0.421 274 0.90 1.055 0.53 1.86 D.703 0.352 280 048 0423 0.53 0.00 0.000 0.423 280 0.88 1.060 053 1.86 0.718 0.343 286 0.45 0.425 0.53 0.00 0.000 0.425 288 0.87 1.066 0.53 1.86 0.732 0.334 292 0.44 0.427 0.53 0.00 0.000 0.427 292 0.86 1.071 0.53 1.86 D.747 0.324 298 0.44 0.429 043 0.00 0.000 0.429 298 0.84 1.076 0.53 1.86 0361 0.315 304 0.43 0.431 0.53 0.00 0.000 0.431 304 0.83 1.081 0.53 1.85 0.778 0.305 310 0.42 0.433 0.52 0.00 0.000 0.433 310 0.82 1.086 0.52 1.85 0.791 0.298 316 0.42 0.435 052 0.00 0.000 0.435 318 0.81 1.091 0.52 1.85 0.805 0.266 322 0.79 1.096 0.52 1.86 0.820 0.276 322 0.41 0.437 0.52 0.00 0.000 0.437 328 0.41 0.439 052 0.00 0.000 0.439 328 D.78 1.101 0.52 1.85 0.834 0.266 334 0.40 0.441 0.52 0.00 0.000 0.441 334 0.77 1.106 0.52 1.85 0.849 0.257 34D 0.40 0.443 0.52 0.00 0.000 0.443 340 D.76r 1,110 0.52 1.84 0.884 0.247 348 0.39 0.444 0.52 0.00 0.00D 0.444 348 0.75 1.115 0.52 1.84 0.878 0.237 352 0.38 0.446 0.52 0.00 0000 0446 352 014 1.119 0.52 1:84 0.893 0.226 358 0.38 0.448 0.52 0.00 0.000 0.448 358 0.73 1.124 0.52 1.84 0.907 0.216 364 0.38 0.450 D.52 0.00 0.000 0.450 364 D.72 1.128 0.52 1.84 0.922 0.206 370 0.37 0.451 0.52 0.00 0.000 0.451 370 0.7'1 1.132 0.52 1.84 0936 10.196 Mod. FAA Minor Storage Volume (cubic ft.) = 19,667 Mod. FAA Major Storage Volume (cubic ft) Mod. FAA Minor Storage Volume (acre -ft.) = 0.4515 Mod FAA Major Storage Volume (acre -ft) UDFCD DETENTION BASIN VOLUME ESTIMATING WORKBOOK Version 2.35, Released January 2015 23,265 0.5341 Latham Detention-FAA-10-Yr-112518.xlsm, Modified FAA 11129/2018, 1036 AM DETENTION VOLUME BY THE MODIFIED FAA !METHOD Project: Latham Compressor Station - Rocky Mountain Midstream Basin ID: Tributary to Pond with 10 -Year Release Rate I Inflow and Outflow Volumes vs. Rainfall Duration 1.2 1 0.8 0.6 0.4 0.2 0 lti #000 °Ss -a- a _ It• rJ _ I # �/_ F/ a Lc .5 ). /. A .. .5 .5 !, ) 7 A .. .5 .5 ), !. a . A A /. Jo- • h A A A J A A h A A 0 50 100 150 200 Duration (Minutes) 250 300 350 Minor Storm Inflow Volume Jes Minor Storm Outflow Volume Minor Storm Storage Volume — Major Storm Inflow VON mg -Major Storm Outflow Volume • Major Storm Storage Volume 400 I UDFCD DETENTION BASIN VOLUME ESTIMATING WORKBOOK Version 2.35, Released January 2015 Latham Detention-FAA-10-Yr-112618.xlsm, Modified FAA 11,'2912018, 10'36 AM Appendix G: Detention Basin Stage -Storage SAMUEL ENGINEERING, INC. Rocky Mountain Midstream, LLC Latham Compressor Station Pond Stage Storage Volume Rocky Mountain Midstream Latham Compressor Station Interval Elevation., Ft. Area, F Volume, CF Description 0.00 4652.00 0 0.00 0.25 4652.25 474 59.25 _ 0.50 4652.50 4650 699.75 0.75 4652.75 12363 2826.38 0.94 4652.94 18393 5748.19 WQCV 1.00 4653.00 21606 6948.17 1.25 4653.25 31296 13560.92 1.50 4653.50 37373 22144.54 1.53 4653.53 37520 23267.93 100-Yr. Storage 1.70 4653.70 38672 29744.25 Spillway 2.70 4654.70 42882 70521.25 Freeboard a 4660.00 Latham Compressor Station - 1 4659.00 - 1 4658.00 - 1 4- 4657.00 - 6 1 .2 4656.00 - > 0 4655.00- 1 W 4654.00 - ■ 1 C ■ 4853.00- 4652.00 1 4651.00 - 1 4650.00 0 10000 20000 30000 40000 50000 60000 70000 Volume, CF Calculated 08-10-2018 Appendix H: Detention Basin Outlet Structure Design RESTRICTOR PLATE SIZING FOR CIRCULAR VERTICAL ORIFICES Project: Latham Compressor Station Basin ID: Tributary to Pond pia. X o 0 ,,.- r--, a() o 0 / \ o a Sizing the Restrictor Plate for Circular Vertical Orifices or Pipes (Input) Water Surface Elevation at Design Depth Pipe/Vertical Orifice Entrance Invert Elevation Required Peak Flow through Orifice at Design Depth PipefVertical Orifice Diameter (inches) Orifice Coefficient Full flow Capacity (Calculated) Full -flow area Half Central Angle in Radians Full -flow capacity Calculation of Orifice Flow Condition Half Central Angle (0<Theta<3.1416) Flow area Top width of Orifice (inches) Height from Invert of Orifice to Bottom of Plate (feet) Elevation of Bottom of Plate Resultant Peak Flow Th rough Orifice at Design Depth Width of Equivalent Rectangular Vertical Orifice Elev: WS = Elev: Invert = = Dia = Co = Af = Theta = of= Percent of Design Flow = Theta = Ao= To = YO Elev Plate Bottom Edge = Qo #1 Vertical Orifice #2 Vertical Orifice 4.653.70 4.652.00 3.53 12.0 0.62 0.79 3.14 4.3 121% 2.05 0.61 10.66 0.73 4.652.73 3.5 feet feet cfs inches sq ft rad cfs red sgft inches feet feet cfs Equivalent Width = 0.84 feet Latham Detention-FAA-10-Yr-112618.xlsm, Restrictor Plate 11/2712018, 4:06 PM Latham Detention Pond Outlet Project Description Friction Method Solve For Manning Formula Discharge Input Data Roughness Coefficient Channel Slope Normal Depth Diameter Results Discharge Flow Area Wetted Perimeter Hydraulic Radius Top Width Critical Depth Percent Full Critical Slope Velocity Velocity Head Specific Energy Froude Number Maximum Discharge Discharge Full Slope Full Flow Type GVF Input Data Downstream Depth Length Number Of Steps GVF Output Data Upstream Depth Profile Description Profile Headloss Average End Depth Over Rise Normal Depth Over Rise Downstream Velocity Upstream Velocity Normal Depth Critical Depth Channel Slope Critical Slope SubCritical 0.010 0.00500 ft/ft 1.00 ft 1.00 ft 3.27 0.79 3.14 0.25 0.00 0.77 100.0 0.00559 4.17 0.27 1.27 0.00 3.52 3.27 0.00500 ft3/s ft2 ft ft ft ft °la ftlft ft/s ft ft ft3/s ft31s ft/ft 0.00 ft 0.00 ft 0 0.00 ft 0.00 0.00 100.00 Infinity Infinity 1.00 0.77 0.00500 0.00559 ft ft/s ft/s ft ft ftlft ftlft 11/28/2018 8:32:10 AM Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster V8i (SELECTseries 1) [08.11.01.03] 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 1 of 1 Appendix I: Culvert Design STAGE -DISCHARGE SIZING OF THE WATER QUALITY CAPTURE VOLUME (WQCV) OUTLET Project: Basin ID: WQCV Design Latham Compressor Station Tributary to Detention Pond Volume (Input): Imperviousness, Catchment lowest perforation, between Number of coefficient, Trickle Charnel, to Drain la = Area, A = H = rows, h = rows, It = Co = S = the Pord = Type A = Type B= Type C/D = Total Total percent acres Diameter of feet Number of hhles per inches Height ft/ ft Width hours USE °!a % °!o Water Quality Capture Vome, lu Water Quaky Capture Volume Design Volume (WQCV / 12 ' Area Outlet area per at each row based on user -input at each row based on user -input irches inches inches X 1.75" watershed inches acre-feet acre-feet square irches square irches square feet Perforated, Mate Examples Catchment Depth at WQCV outlet above Vertical distance Orifice discharge Sbpe of Basin Time Watershed Design Information (Input): 48.1 5,98 holes, D = 0.753 1 row, N= 1 4.00 OR 2.00 0.62 of slot, H= 0.004 of slat, w = 40 EQUIVELENT 1/2" OPENING 0.221 0 0 O o ° 0 O 0 0 O O a o 0 4 0° 0 0 0 Percent Soil Percent Soil Percent Soil Outlet Design Information (Output): 0 SLOTTED WQCV = (WQCV). = ` 1.2) Vol = row, A0 = above, A0 = above, A0 = i 100 O 0 opening area opening area O 0 a Q O 0 0 O O 4 O O O a g .O 0 0 a �� 3 0 a 0.110 0.132 0 0.44 _ 0.44 0.003 Central Elevations of Rows of Holes in feet I Flow Row 1 Row 2 Row 3 Row 4 Row 5 Row 6 Row 7 Row 8 Row 9 Row 10 Row 11 Row 12 Row 13 Row 14 Row 15 Row 16 Row 17 Row 18 Row 19 Row 20 Row 21 Row 22 Row 23 Row 23 4652.00 4652.33 4652.16 0.0061 0.0000 0.01 4652A1 0.0098 0.0048 0.01 4652.66 0.0125 0.0088 0.02 4652.91 0.0147 0.0117 0.03 4653.16 0.0166 0.0140 0.03 4653.41 0.0182 0.0160 0.03 4653.66 0.0198 0.0177 _ 0.04 4653.91 0.0212 0.0193 0.04 UN/A #N'A p1/A. #N/A #NA #N/A MA #N+A► #NIA #N/A #MA MIA UN/A #NA #11/A #N/A #N'A MIA UN/A #NA MIA #N/A #N+A MIA #N/A #hM #NIA #N/A #N'A UN/A UN/A #NSA MIA UN/A #N/A #NIA Latham Detention-FAA-10-Yr-112618. sm, WQCV 11/27/2018t 4:09 PM Double12-inch at Site Access Project Description Friction Method Solve For Manning Formula Discharge Input Data Roughness Coefficient Channel Slope Normal Depth Diameter Results Discharge Flow Area Wetted Perimeter Hydraulic Radius Top Width Critical Depth Percent Full Critical Slope Velocity Velocity Head Specific Energy Froude Number Maximum Discharge Discharge Full Slope Full Flow Type GVF Input Data Downstream Depth Length Number Of Steps GVF Output Data Upstream Depth Profile Description Profile Headloss Average End Depth Over Rise Normal Depth Over Rise Downstream Velocity Upstream Velocity Normal Depth Critical Depth Channel Slope Critical Slope SubCritical 0.010 0.00400 ft/ft 0.88 ft 1.00 ft 3.08 0.73 2.42 0.30 0.66 0.75 87.5 0.00528 4.22 0.28 1.15 0.71 3.15 2.93 0.00442 ft3/s ft2 ft ft ft ft °la ft/ft ft/s ft ft ft3/s ft3/s ft/ft 0.00 ft 0.00 ft 0 0.00 ft 0.00 0.00 87.50 Infinity Infinity 0.88 0.75 0.00400 0.00528 ft ft/s ft/s ft ft ft/ft ft/ft 11128/2013 5:40:13 PM Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster V8i (SELECTseries 1) [08.11.01.03] 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 1 of 1 Latham Spillway Project Description Solve For Input Data Discharge Headwater Elevation Crest Elevation Tailwater Elevation Crest Surface Type Crest Breadth Crest Length Gravel 18.89 4654.20 4653.70 4652.00 ft3Is ft ft ft 12.00 ft Results Crest Length Headwater Height Above Crest Tailwater Height Above Crest Weir Coefficient Submergence Factor Adjusted Weir Coefficient Flow Area Velocity Wetted Perimeter Top Width 19.84 ft 0.50 ft -1.70 ft 2.69 US 1.00 2.69 US 9.92 ft2 1.90 ft/s 20.84 ft 19.84 ft 11/2812018 7:14:51 AM Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster V8i (SELECTseries 1) [08.11.01.03] 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 1 of 1 Appendix J: Construction Drawings 1 2 3 Ln en 0 tL U th U J En al rd tr - en Ci s u� E a E � ez 4 It' E FIa- rac 4-`a Jal ci IN ✓ l CO rw V:4 Jy N ti C N�.I h .--I N 1A LL < • S USR18-XXXX LEGAL DESCRIPTION LATHAM COMPRESSOR STATION ROCKY MOUNTAIN MIDSTREAM, LLC APPROXIMATE LOCATION 12$44 PT N2SE4 & S2NE4 27 5 65 N OF C/L OF UNION DITCH BEG NE COR OF S2NE4 THENCE S834' Kr W196.48' 2650' ± TO CR 43 CIVIL SITE PLAN 30' RIGHT -OF -NAY GRANT S25D261A' 45.37' S87D581/1 114.32' S46D24'W 116.38' S02D35'E 144.82' TO C/L OF LATHAN DITCH THENCE ALONG WELD COUNTY, COLORADO SNYDER OIL CORPORATION C/L SWLY TO N/SC/L OF SEC THENCE N1850' M/L THENCE E2640' TO BEG 1.56L) PARCEL NO. 0961270.0060 REG. NO. 2365670 (3D .67R REC. NO. 2468252 N 1379700 i al 24' ACCESS ROAD fi CHAIN LINK FENCE N 1379600 I /- I — — ---43J----- d I I N 1379544 � I`, . .. va 'z- „:-.‘,...,a _.- ' II I I — —---_--- —_--- 110 ---- ------_--- I. Ilr LEASE BOUNDARY "III` 128 , 114 314-316 ■ up 112 1I�11 120 — 122 115 ' FUTURE N 1379400 1 0 113 a� Q I 4.0' LJ ■ 310 311 I 010 ■1 111 Ell l■II■■ III ■■II■` rt ROCKY MOUNTAIN MIDSTREAM, Ss LLC LATHAM COMPRESSOR STATION 1 a 1 jl 7 0 1 o ] Q ]_ a I o Ill 25724 GREELEY, COUNTY ROAD COLORADO 43 L `� u E � FUTURE u USR18-XXX)' IN CASE OF EMERGENCY CALL: 911 in I Ik N 1379304 Pill 111 I I LA SALLE DISTRICT: FIRE PROTECTION 284-6336 (970) COMPANY EMERGENCY CONTACT ` _ • r—, _ (97{1) 987-2527 sl9METAL SIGN i / 210 II MOUNTED TO POLE W/RIVETS -' ti N 1379200 '1 METAL POLE ■ . IlI _II�!igil-rpil - / ' I LEGEND / / CONCRETE BASE POLES -t FOR RIGHT -OF -WAY -7 N 1379100 �► ----._.._.- PROPERTY LINE - - - - - - - -• - - - - '� SECTION LINES PROJECT SIGN V OR REASONABLE FACSIMILE _- DRAINAGE FLOW ARROW TRAFFIC DIRECTION ARROW EQUIPMENT LIST N 1379000 RECYCLED ASPHALT PAVEMENT 010 HEADER SKIDS 120/122 FILTER SKID 110 111 INLET INLET ESD SKID SCRUBBER SKID 123 124/126 HYDROPHOBIC TEG CONTACTOR FILTER PROPOSED CHAIN LINK FENCE ti 112 113 114 115 115 117 . MC AIR PUMP FUEL 3 NGL PHASE BUILDING SKID SKID GAS METER SKID SEPARATOR SKID SKID 128 210/217 220/221 310/311 314/316 411/412 INLET COMPRESSOR VRU TEG B-TEX COMBUSTORS COMPRESSORSIlk DEHYDRATION METER UNITS SKID SKIDS UNIT N 1378900 THE SITE SURVEY FOR EASEMENT THIS LINE PROJECT WAS PREPARED BY 118/119 LAS METER SKID 430 SLOP TANKS ACKLAM, INC. IN MAY 2018. BASED ON COLORADO J11 E 237200 E 237300 E 237800 STATE PLANE COORDINATES, NORTH ZONE, NORTH i`_INI AMERICAN HORIZONTAL DATUM, 1983 SURVEY (US 2650' ± TO CR 52 FEET)), GRID. is "lip ilNORTH 8111 CJ •j rj CJ CJ ii t0 ° _ h � r-, r-, r--. F. r N, N 1378844 Preliminary �_' 25' 5T 1OO' 150' - I�IfwI Wila i bel0W, Not For Construction L h _ _ I LL1 W —' -- nil W - W W VI W ry w rail before jou do SCALES 1" — 5']' 7�+' J• Lk This dacL rne•it is c.Ja}righted and is au irstrumen:af.sarvctby ;amuolEnyinarriry(;Ey Itnas ;eo,aredsalelyto�Lhe +.rr3i•i c.Iidn.'Su6-aJn!his r'*c.t Orly. Lisa. Copy fir {I SEILSL-a ❑' P. 11? Irltilr l'.91inn thaw.: in v.holen•ii, pelt, v,i!hout is rr0men_-Iw*Prictlyprohibited is ¢ mic frol hr*Prh Milli an, :-'e-€130 pro5=ated. Any unau i1Urb_cd tLsesina I L•: a! Line 44 a ris, 41 tit Oar• n 1 ,ear-' 1 - Sl3 `�Ir r-�=w*� L:r:A1c II ROCKY MIDSTREAM WELD MOUNTAIN COUNTY, LLC CO a i f imam T f °� TITLE F'R.D]ECT NUMBER LATHAM WILLIAMS CIVIL CIVIL COMPRESSOR DJ GENERAL SITE PLAN BASIN STATION FIELD COMPRESSION 18293 ne�r.vED�M. SICEI5KEY 11/07/18 IL:rr•r1; M. SKELS KEY 11/12/18 DRAWING NUMBER BP MAS A ISSUED FOR INFORMATION 11/13/18 NAS =ii c< Samuel Engineering NH Pri eie] Se]ihJEle]'I. D'A•', VC. DE -r.-- PT L'lr- I::LIST fru w .l I I w W= III r 9r., DEti r RI'TLeIH DATE 6` J _w ' a% . W w - TiLL — W = LJ Yn. 7Esr R1P--e'N DATE 5' e.IHDo-n REV. LCS — C E —1 0 3 REFERENCE DRAWINGS REVISIONS REVISIONS ArPao•ED: S450 E. Crescent Parkwny, Sults 2C0 Plions a03.714.4u40 GmanwaaadVinaaC3801I Fax: 373.7.14.4800 A B C D E F G H 1 2 3 erti N O C E I` 4 C5 y 603 it, _ If en ID N ▪ .. s -a y Li Al n d f : U y .- IT, C o Qv l l l l a •a'+ ren IN en a c"--1 en ZN eel I a I i-I en a n1 en a en en a vr rn a Lei en APPROXIMATE LOCATION GEN ERAL NOTES w 1 l` w w w w w w 30' RIGHT—OF—WAY GRANT 1. THE ROCKY MOUNTAIN MIDSTREAM LATHAM COMPRESSOR STATION, IS LOCATED IN PART OF THE NORTHEAST 1/4 t GRADE BREAK POND OUTLET SNYDER OIL CORPORATION OF SECTION 27, TOWNSHIP 05 NORTH, RANGE 55 WEST, 6TH PRINCIPAL MERIDIAN, WELD COUNTY, COLORADO. ` '-� - �� N 1 379 477.00 t ____ I INV. OUT IREC. NO. 2365670 - N 1379700 E 3 237 119.00 LOW TAILWATER BASIN N 1 379 615.60 REC. NO 2468252 2. THE SITE SURVEY FOR THIS PROJECT WAS PREPARED BY ACKLAM, INC. AND WAS RECEIVED OCTOBER, 2018. BASED ON COLORADO STATE PLANE COORDINATES, NORTH ZONE, NORTH AMERICAN HORIZONTAL DATUM, 1983 SURVEY FEET), EL 4 654.70 -- INV. POND OUTLET IN ---- E 3 EL 4 237 318.00 552.03 �_� GRID, THE COMBINED FACTOR USED TO OBTAIN GROUND DISTANCES IS (US 0.99972885 1.000274190. VERTICAL: NORTH BENCH y? 4E52 -- _ AMERICAN VERTICAL DATUM 198B. I -ti - ��= N 1 379 592.6) -___ -z = BERM N 1 494.3'7 ++' / - - 4652 - -_ - _ _ 379 r�-- ,----- __�_- __ _ if---- N 1 379 601.94 i± III( E 3 237 318.00 THE SITE CONSISTS OF IRRIGATED CROPS. PRIOR TO BEGINNING EARTHWORK OPERATIONS, CLEAR SITE OF ALL I III( fir' E 3 237 105.00 I - - -_--3. :- 1 �' -'- -J'-' -' E 3 237 545.23 EL 4 ROAD 654.70 I PI 1111 IIIi IIII Ii I1 ti ; ,I ii 11 i r * \1 \ • l EL F" 4 652.14 SPILLWAY EL BERM 4 654.70 `k ORGANIC PLACING AND/OR. FILL OR UNSUITABLE SURFACE MATERIALS. MATERIALS, SCARIFY, MOISTURE TREAT AND COMPACT THE SUBGRADE PRIOR. TO 4. ALL CUT AND FILL SLOPES ARE 3H:1V UNLESS NOTED OTHERWISE 4N THE DRAWINGS. I I ' -- N 1 379 544,85 N 1 379 477.00 -. N 1379600III' !r =� E 3 237 069.'00 -___ - E 3 237 552.39 ii +i �- a -- _ + - - �� EL BEGIN 4 655.50 ACCESS I I Ir III II it 'i �i 1111 Ii 1 I f 1 y \-' �� I r-- ��' I - {`� y, ,�, ,� vi 1/4O �t,� •I EL BENCH 4 654.70 5. GRADING FROM 6. A SOILS ROAD ELEVATIONS REPORT AREAS AND WAS SHOWN UNAVAILABLE 4" FROM ARE ALL TO OTHER FOR TOP THIS OF FINISHED ELEVATIONS SITE AT THE SURFACING. SHOWN. TINE THIS FOR. DRAWING ROUGH GRADE WAS ELEVATIONS ISSUED. ALL SOILS SUBTRACT SHALL BE $n N 1 379 477.00 v I' 11, I 1 N 1 379 494.00 COMPACTED TO A MINIMUM OF 95°k OF THE STANDARD PROCTOR DENSITY (SPD) AT ± 2% OF THE OPTIMUM MOISTURE ' vII _ DETENTI€ PJ POND SEE DRAWING LCS CE 8��1 CONTENT, ASTM D-698. E3236987.70 EL 41x53.45 1 111 h�� i� I :1 , I + it I I i ,• - T E EL .I 3 237 505.00 4 554.70 V -DITCH 7. THE CONTRACTOR WILL 6E RESPONSIBLE FOR LOCATING AND PROTECTING ALL UNDERGROUND UTILITIES. THE DOU@LE 12„ CONTRACTOR IS TO ENSURE THAT 811 AND ROCKY MOUNTAIN MIDSTREAM SITE PERSONNEL ARE CONTACTED PRICK TO N 137950x? I , ' r - N 1 379 465.00 '1 '�� '� HOPE '' INV. IN COMMENCING CONSTRUCTION ACTIVITIES. CAUTION SHOULD BE TAKEN DURING ALL EXCAVATION OF SOIL AND I ,1 11 ��-,.: E 3 237 5504.0 1 N 1 379 435.00 ,III FOUNDATIONS WITHIN THE LIMITS OF DISTURBANCE. CONTACT ENGINEER IF THERE ARE CONFLICTS. 'II I EL 4 653.72 E 3 EL 237 4 553.88 047.00 III: I II 1 \ ROAD PI 8. THE MAICRITY OF THE SITE GRAVEL WILL BE INSTALLED AFTER EQUIPMENT IS SET AND FINAL GRADING IS COMPLETE. ' `4 BENCH ' N 1 379 477.00 THE CONTRACTOR IS TO COORDINATE WITH ROCKY MOUNTAIN MIDSTREAM PERSONNEL FOR ALL GRAVEL INSTALLATION I I I \� TIMING. I I I I' IN 1 379 413.�� E 3 237 461.00 1 IMIr,I' �' 111 I '' ` 0 E3237305.00 EL 4 655.00 NIP EL 4654.70 I 9. THE CONTRACTOR IS TO SUBMIT A GRADATION SAMPLE TO ROCKY MOUNTAIN MIDSTREAM PRIOR TO PLACING GRAVEL BENCH I III, 1 I' A �, BENCH I X MATERIAL. ROCKY MOUNTAIN MIDSTREAM PERSONNEL WILL DETERMINE SIZE OF GRAVEL TO BE USED. PLACE CRUSHED NI 1 379 413.00 ' " 1 / N 1 379 413,00 N 137940+) �� 1i11AHI I I I ' I I�. 1 4 o IIE GRANITE FOR THE SITE BENCH AREAS AS DIRECTED BY THE OWNERS REPRESENTATIVE. / E EL 3 237 105.00 4 654.20 , I 1 , I II Il,'r I it i I g 451 '' DP I I E EL 3 237 505.00 4 654.20 10. INTERIOR ACCESS ROADS SHALL HAVE A MINIMUM OF 8" COOT CLASS 6 ROAD BASE PLACED OVER GEOTEX 2505T Ili+l I I ', I WOVEN POLYPROPYLENE GEOTEXTILE FABRIC AS MANUFACTURED BY PROPEX, INC. OR EQUIVALENT. RECYCLED ASPHALT I L1 I I READ PT OF SIMILAR GRADATION OF THE SPECIFIED ROAD BASE CAN BE SUBSTITUTED FOR WAD BASE WITH ENGINEERS APPROVAL. IiIIi 'i 1 I N 1 379 405,00 BENCH I "il ❑' I I ❑ .yy 1 ' -�-J� E 3 237 533. I�'J '4 I BENCH 11. FOR. SITE PLAN AND LOCATION INFORMATION REFERENCE DRAWING BCS-CE-103, FOR CIVIL SITE PLAN AND NOTES N 1 379 2$5.00 �� a I I 3 237 105.tU I II° II I — N 1 379 288.00 sr EL 4 654.15 BCS-CE-601 AND 602 FOR DRAINAGE AND GRADING PLANS AND NOTES, BCS-CE-501 AND 502 FOR FENCE LAYOUTfE 11AND Th-----.- I '' 00 \i\ DETAILS. p E 3 237 3.75.00 3' EL4654.82 Ii [ Iliili it ',/ N 1379300 ii a EL 4 555.63 O I:111 11 0 I -I r7 c, • III I - P Ltd 334 LF V QITCH Ili hi i' I ��I��■gl�� i��u��i��ii��ii��iI 11 I 0.40% SLOPE@ 11111 I I BENCH i I I N 1 374 288.00 I' IIIIi 1 x` -- I i u I ~Y�a ROAD N PT 1 379 170.00 A f I` 11 1,0 I I1; l I . I I a 0 o O �� a hl op 0 �c ] �� v� y� o 'f �"I a I i I 1 E EL 3 237 505,0{ 4 854.82 I 384 LF V -DITCH E 3 237 069.00 i 'iII I ICI I Ij', `rte I U� 4ll°l° SLOPE aC? EL 4 655.35 I I III �' _ —��` ,,. N 1379200 _ I '1 III I' TI 1 '� '� ROAD PI 12' 12' X11 , 1 I �� „• � I N N 1 379 17.0.0.0 BENCH N 1 379 163.00 1 1 ii '1i11 il'' + r ■ • 1� 1 LI�''II u; E E 3 237 533.00 4 855.it7 DENOTES CONTROL LINE (PROFILE GRADE) } E ------ E S 237 105.00 + ,1 u l I III f - Ss EL 4 655.07 li Ij i iilii 1 } BENCH ( ((;(` BENCH co 1111, 1 379 11x3.07 ie, I 1 N �i: I IIilI I N 1 374 163.00 ,_ I i` a 3 237 + E 505.70 f 1 I Iiii'i 1,1111,1 I II `\ 'N I E 3 237 305.00 �' • 4 655.07 1 I I 1 OR c 2% i N 137410 J I- I I 1EL EL 4 655.88 e �a - I�I 8" COOT CLASS S ROAD V -DITCH 111111'1, 1 f.i` ►�!{'rlay1�' 't� _____________ ___________ "' N 1 379 101.00 1 1111 I '' 1 V -DITCH .r.- - BASE COMPACTED TO 95% N 1 379 101,0+J SPD OR RECYCLED ASPHALT E 3 237 053.00 I .-. III i, `' I — I l' - - EL 4 655.32 II �--- � � E 3 237 550.00 i11 r1 I `S _ _ _ GEOTEX 250ST (OR EQUAL) MOISTURE CONDITIONED AND I's" s a a EL 4 555.26 Il G[TCH I III' I a a a o- \ ROAD PI 14 N 1 379 o- . . . . 0 098.00 N 1 379 081.0O0081.0OROAD . 6 d . PT . o a o . COMPACTED GEOTECHNICAL SUBGRADE SPECIFICATIONS PER N 1 379 081.00 I iil11� iN E3237141.00 E 3237305.04 1 379 098.00 V DITCH 2' TYPICAL E 3 237 773.00 II 11 1111 EL 4 655.53 EL 4 656.04 E 3 237 461.0.0 N 1 379 381.00 N 13790{]x0 EL 4 655.44 11 , \ EL 4 655.51 E 3 237 530.00 11 1 1' i \ EL 4 655.39 A 24' WIDE ACCESS ROAD I a II 232 LF V —DITCH 225 LF V —DITCH 0.28%/6 SLOPE@ 0.28% SLOPE@ / N 137890+3 I I I 1 4 'v I -. ,, `' x ,; ih. 8 11 a 4 r i xti� J� r - ., r � 1 1 N �' R5Cb r 4 04,10 K110��111181'h>i below. 7------r-'----,I Ir V f r— ti C1 �. - 4 w ;i 1 1 ~ .fi r- to Call II before you lg. �� 41: g 1 '4 - �' -01 t a 0 of F 1 l l-26::. 4h 0 7e �.bl' NORTH�._ q I it _ ---- VJ r•-• • 1v L�• 'klNvAL N 1378800 i-----I I n'i rev ` {GRy ' ,` L 'rs. - I y w w 0' 25' 50' 100' 150' I I I ISSUED FOR PERMIT SCALE: 1" 54 This dncu.n•_.it is capyrigh:•ad and n +.r.'n'hrur;Ipntnf S : w pre red Fncsold ng SE]. I: was pre,arai =oialy For the Owner's/Client's use cen opy93 .j projootanl Js_, copy arIOrIstowr-,f any rlt=;rrrlatlarr show. 1r, vhol_ Crir• pa -t. witlbut C0n[r1L. iS £LriCLI•r irolibiLed, S p cnyrghr traorh prlp alp! le 7Fisenite 1, ?sly .Inautherized •euse sha I beat the sole ISh'lf the user, s`'t- 1" - 5'j' Flit- -_EN-! Lcc1TIDN: ROCKY MIDSTREAM WELD COUNTY, MOUNTAIN LLC CO TITLE PROJECT NUMBER LATHAM WILLIAMS CIVIL DRAINAGE GENERAL COMPRESSOR DJ R BASIN GRADING FIELD STATION PLAN COMPRESSION i � pESLcner• M. sKELSKE4 08/01/18 r,Ita;:%: M. SKELSKEY :1$/1O/17 DRAWING NUMBER EP MkS A ISSUED FOR PERMIT 11/28/18 MA5 CI ICh'IG: 0 Samuel Engineering •e4t Pnrii.'ir3 ,lkillu!IS n 1:' 1 E. Cresc..nr Perkwa Suite ''IOC. Phone: 3L 714.414.1 Dam-. No. =:r RIPTInh I _ = W W r' w e- N 613 Jiu Fp. ?E`I'4LPTLAN L`-.rE B L'[..,' w I. w =,U m �. , " 'y'± Y 6 1W. PE:1-..PT1r,.P PATE b' MFFRU�7FD:: rv. I f}1 s/1F {�y� L V A� L_ V REVISIONS REVISIONS AFFRD•IE1: REFERENCE DRAWINGS 8451 1, n" s , GroanF:llod Villaqu, CO R01'I I Fa'x 3017 14 aar_rT A B C D E F G H 1 2 3 I I I I I SPILLWAY WEIR (.:D Rocky Mountain Midstream Latham Compressor Station N 1 379 502.54 Intervals Elevation_, Ft_ Area, Ft' Volume, CF Description E 3 237 342..E.)1 TYPE SPILLWAY L RIP RAP 0.00 4652.00 O 0.00 EL4'353.7O ( B 0.25 4652.25 474 59.25 L_fi--.��.--•--•-+�J-t-.-s-s-•-x-c-c-•-+-•—s—car— �.—i •- ---�ci+—.—s—.—.--. 0.50 4652.50 465O 699.75 -__..a___, r + TRICKLEtf, CHANNEL r LOW TAILWATER 0.75 4852.75 12363 2828.38 BASIN SPILLWAY WEIR N 1 379 552,60 kt\ /� N 137E 601.76 0.94 4652.94 18393 5748.19 WQCV CUT OFF f } 1.00 4653.00 216O6 6948.17 BERM E 3 237 124.26 1 _f a,1 �' ti WALLS E 3 237 372 Ni 379 801.78 EL 4 653.07 —`:. EL 4 653.70 POND BOTTOM [25 485315 31296 13560.92 N 379 592,59 1.50 4653.50 37373 22144.54 E 3237 083.9€ 1 f' 23 LF w 12' 1.53 4653.53 3752O 23267.93 1OO-Yr. Storage EL 4 654.70 — E 3 237 +43.03 f — STEEL CULVERT ��IIJ� _ 1.70 4853.70 38672 29744.25 Spillway ff ` a 0.50% SLOPE EL4653.'3O � 2.70 4854.70 42882 70521.25 Freeboard POND BOTTOM/ TRICKLE J N 1 379592.59 rf I OUTLET 20' CHANNEL E 3237O43.Oi / CONTROL N 1 379 552.00 ll N 1 379 592.604 EL 4 553.69 E 3 237 520.62 BERM %1 1 err} E323731S.O{1 EL 4 562.14 1 /J EL4653.11 JGE5CO• Latham Compressor Station N , 1179 552,43 \ Dl .4O°ro _ 8 ° 0.4'03'5 I! TRICKLE 44,0 W ,657 CO re — CHANNEL y ._ =...^:r...-a:•x.-.u.... �.,ra ^.•-x a:^xa•.•x^.••�m.�z �sz :r.^a:.a: x..�•x.:e •xr••a.+�sz� :;'H.^:. -u :•.•x ^.••x: x,�:•x.=: a• z^.•-s:.�^:•:� r•:.a �:-.m x.'r r•:ura•x:..r �••xr••':. �:a: �^ _ r•.-xr.^.: •zr ^.•^.: _.x•x;a:.^: xr?.••�: cs: :x�.:.a.c•:,s :r..e �•:xr ^xti::�•xeza �. r, �•:a.�a ra:•xr'>-•'::. .• t E3237032.00 � N137:�552.8O dlF7® = 4 EL4654.7fl TRICKLE I ; 1% E3237:4s.OJ 1655 d0• >F;m, ;� EL 4 653.20 auji _ - — •w.5 W CHANNEL N 1 379 552,30 [ r '+ y l 1�Ifl �� - fA ffi_%cc 5.` = TRICKLE 'WL E 3 237 0933.021 165- CO , CHANNEL EL 4 553.20 i of 4t1. A® — N 1 379 512.31 l• UJP: Ain 1UCCJ AJWL v4 JJP jUkAJ?ILIA BERM #}C 1' E 3 237 538.94 Volume, OF N 1 379 5O9,49:rrY EL w 4 X53.8O TRICKLE STAGE STORAGE E 3 237 O$3.9Of EL4654.7O BERM TRICKLE CHANNEL TRICKLE CHANNEL BERM CHANNEL N 137 512.80 N 1379 N 1 5fl3.71 N 1 379 512.61 N 1 379 552.60 N 1 379 499.64 POND BOTTOM N19795O1.19 E3'237318.O0 E3237545.65 N1 379 61'2.61 E 3 237 093.7 E 3 237 098.00 E 3 237318.90 E 3 237 315.48 EL 4 652.70 EL 4 654.70 E 3 237 093.00 EL EL 4 853.50 4 654.70 EL 4 653.61 EL 4 652.30 ELI 654.70 DETENTION POND NOTES DESIGN VOLUME 23,265 CF 1. WORK THIS DRAWING WITH LAT-CE-1O3 - SITE PLAN, LAT-CE-6O1 - GRADING AND DRAINAGE PLAN AND LAT-CE-4OO SERIES FOR EROSION CONTROL. OUTLET SIDE 2• SPILLWAY CUT OFF WALL IS 2O'L X 2.5' D X 3.67' W 3OOO MINIMUM PSI CONCRETE. SIDE OF SPILLWAY. POND SIDE 5" THE 6" TOPSOIL OVER RIP RAP SEEDED WITH 3. PIPE WALL CUT IS OFF LOCATED WALLS AT ARE 4' THE INLET THE L X 4' D X 0.67' W 3OOO MINIMUM PSI CONCRETE S' 26 S APPROVED TO STABILIZE SEED MIX LOCATED IN TWO PLACES SHOWN ON THIS DRAWING. SLOPE EXTEND RIP RAP TOP OF BERP/ `a =11=11=11=1 1 31 �n ' RUN DOWN TO ELd45d_7n A —7 — •Ii- TOE OF FILL SLOPE —1� C___./ { el1tV eu�� ■I ■■■�I .. ILP OF SPILLWAY LL4i5 .r-0'■■■�■■ dl■■■�■r 1■■■�■■! —Y. , ■ I 2 • r 4 a a �■ F� —11-11— ' '� -J�■��a 111'I e e s a e. ■� •I _■■■�■■■ �I a- • ° I"■�� II�■■■ ■■■�■■■ II�■n■ ■■ SPILLWAY CUT OFF WALL - .° • a -•° n ° . " • . SPILLWAY CUT OFF WALL ■■■ ' 0 EMBEDDED IN POND BERM ■■■�■I . .4 •° I... "` ° - ■ ■■■�■■■ '�� ■■■ ii EMBEDDED IN POND BERM ■�■■■� 5' EACH SIDE OF SPILLWAY C■■■�■■■�■■ ��C■■�I�■::�■ ■��■■� ■�■�■ 5' EACH SIDE OF SPILLWAY L D X (3O'X2.5'WIDE) - OPENING (3' L K 2.5" H X SECTION 8" WIDE) COMPACTED 18" THICK TYPE L COMPACTED RIP RAP BACKFILL EMERGENCY OVERFLOW SPILLWAY - KBD SECTION - EMERGENCY OVERFLOW SPILLWAY N.T.S. N.T.S. 1' 1. FLOW LINE OF TRICKLE CHANNEL 12" 5, .— I.j.—. Info ' 4652.274652.00 irs.'4�—•�i 0 Rimy IL 4" TYPE L RIP RAP WELD CULVERT A 1/4" WITH THICK THE STEEL TOP PLATE OF PLATE ONTO THE ELEVATION 1/2" PLATE X FOR 12" 4652.73. 1.75" STEEL WATER SLOT OPENING QUALITY IN D ` OVER 0MIRAFE SECTION - TRICKLE CHANNEL k OD REc,. d,a•"""',^••:j •°•: T ��+^. • <• OUTLET CONTROLo N.T. N .T. 5. NORTH 811 � J ; 4• i II, �• 'i 9r�lfl • ! �� aa: wi•a�a ��'G N.T. S. i7' is' SO' _ 90 —#*4 ` �f�r�a1�, SCALE: 1" = 3]' KNOW marsbeton CaIleforeyo■digr ISSUED FOR PERMIT —his do:umsnt is copyrreh!Ad and 'e on ins.rurnenl di s_E1. 5s pi p r d +ring (sE;. It xospr_pared solcl�r -orth=amn-_tonll. Us'es s: or, k! is p i x•_ only. Use' o�py ar �Jisdcsure Of any information sl'own, inwh k or in part. without 'Es rnnsant, iss±riJTh p hihNNNr1. is cal', rillh-hrea.hmrrlriny he rumen.rrd. Am unaulhorice1 reuse shall b� 91 _14 Scl-± rise• el the us4r_ • :: 1" = 3r0' "a'- CENT ROCKY MOUNTAIN MIDSTREAM LLC COUNTY, CO _t- gnti:�..�� Williams `''S TITLE PROJECT NUMBER fr �'+�: M. SKELSKEY 77{?ff1M LATHAM WILLIAMS CIVIL GENERAL COMPRESSOR DJ BASIN FIELD STATION COMPRESSION 18293 "° r"WELD Ni.SKELSKEY 11,127/13 DRAINING NUMBER BP MRS A ISSUED FIR PERMIT 11/29/18 MAS NECKED el Samuel Engineering :1.rB Provide Sok! lJtlE DETENTION POND SECTIONS AND DETAILS REV. Dt,';Mr. .-35Cr:PT ICY - _ _i - ry _ ±- or o 3 L .1 3 F.O. DE5C1[FTIc1 DATE &` P r _ �' 5 Y w - ± w r FW. DESCF:PTICn CKTE 6" A'PRSR'ED� LCS-CE— 64J2 d REVISIONS REFERENCE DRAWINGS REVISIONS AVRoVEE•; 9459 E. Crescent Partway, Suite 290 Phone. 303.714.4A47 frnAnwnnd Vilm.n.;.l7 AA111 Fax: 3'.11.f1L.4Ri}A Rocky 'untali Unoccupied Compression/ General Decommissioning LLC reating Station Plan Miistream, Preamble Rocky Mountain Midstream, LLC is committed to minimizing impacts fromcurrent and future operations. In the development standards for unoccupied compressor stations, the Weld, Adams, and Arapahoe County Boards of Cornmissioners 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 C CCC. al V1i!I:arns. ''' Document #: Revision #: 1.2 Revision Date: 11/15/2018 Document Name: Decommissioning Plan Location: Rocky Mountain Midstream Compressor Station (unoccupied) TABLE OF CONTENTS Title Page Table of Contents 2 Purpose .. 3 Scope 3 Definitions 3 Responsibility 3 Guidelines 3 Document Management Log Page 2 of 4 a Williams. atter Document #: Revision #: 1.2 Revision Date: 11/15/2018 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 UR/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 I O 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 3 of 4 al V1i!I:arns. ''' Document #: Revision #: 1.2 Revision Date: 11/15/2018 Document Name: Decommissioning Plan Location: Rocky Mountain Midstream Compressor Station (unoccupied) Document Management Log AUTHORS This document was prepared by: Name Matthew C. Norton HSE Compliance Supervisor Title Asset Phone Email VERSION HISTORY/ CHANGE LOG REVISION RECORD APPROVAL SIGNATURES Version Date Version No. Description of Change 1 Remarks Revise Name of Party Approver Signature draft Initial. Draft and Review N/A NIA 07/04/2018 1.0 Incorporate application final edits submittal for M Norton ----47:254,,,, es Ar-Avic 09/10/2018 1.1 Make applicable to USR & CUP M Norton e- xleribrc_ Ownership, formatting 11 /1 512O18 1.2 J Ki n n Kinnin updates. position titles, header eXiteohlfrri - e Page 4 of 4 .4 ea 4 a"ratu .. Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management irj 4i - n* 44 at. r e bi 3 • by , Discovery margency Response 1 an Page 1 of 43 .4 thi is ,1 n -, Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management irj el 44 e. r e bi 3 • by , TABLE OF CONTENTS Purpose of Plan... Di Asset Information Incident Response Incident Command System S Responsibilities 10 Training Requirements of Emergency Responders 12 Drills and Exercises for Emergencies . , , , • . • .. w w.. 13 Drill/Exercise After Action Report.14 Media Relations Support Plan ... 15 Incident Reporting 17 Incident Response 19 Specific Scenario Response.20 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 Exarnple 42 Appendix. F — Employees Notice of Injury Form Exa pie 43 3 5 Page 2 of 43 Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) ek. ea zV Ip % Location: Section 2— Incident Reporting and Management irj a_ it 4444 d..b b.i 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 N 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% -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 !kiwi:4 \ tJr Ir a . 1 it j Document ##: 2.2 Revision it: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management 4 --*-411 a* 4. r 0414 * ika 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; • 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 riss,•4 101 ripe . rip! j Document ##: 2.2 Revision it: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management 4 �_ -.eta* 441 tub 4 * ttiv ., 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 operator will 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 Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) ek. ea tV Ip % Location: Section 2 — Incident Reporting and Management irj a_ 't 44 441 d..b b.i Incident Levels Discovery Midstream incorporates three incident levels as part of the "incident 1' oti ication 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 arrES4 \ It • I :Si! i Document ##: 2.2 Revision it: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management 4 --*-411 a* 441 044 * ika 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 ("DIVA") 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 .4 thi is ,1 n -, Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management irj •41)_ t 44 4,m • Jub 3 • ov 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 ek. thi is n -, v Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management irj el 44 e. r e bi 3 • by , 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 _ Level 2 Incident Commander Safety 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 ri Elf:4 v Ir j :It Document Si: 2.2 Revision it: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management 4 zi , a* 44 0414 * ika 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 .4 thi is Ir -, ,1 •;;DE Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management irj 4-114* 44 4 a e bsb 3 • 4 v .s 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 11 of 43 Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) ek. ea zV Ip % Location: Section 2— Incident Reporting and Management irj 4_ it 4444 db.b b.i 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 9 CFR 1910.120(q) are: IF Action i Training First Responder Awareness Level: Initiating Emergency Response Only: Sufficient training to demonstrate competencies. Notifying authorities Respond in a Defensive Fashion: First Responder Operations Level: Protect nearby environment from persons, property, a safe distance. or Eight (8) competencies. hours of training and specified Respond Approach to plugging, of stop release in point hazardous patching, or an exposure.) Aggressive Fashion: of release (Hot substance release or valve isolation Zone Entry) (i.e. at point Hazardous Materials (HAZMAT) Technician: Twenty competencies. Responder four (24) Operations hour of training Level equal and specified to First Assume Control of Incident: Twenty on Scene Incident Commander: four (24) hours of training equal to First Incident Commanders assume control of the 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, chemical to be performed. hazards Specialized Assist, hazardous counsel, substances Support: or advises IC on specific at the facility. Specialist Employees: Sufficient in area of training specialization or demonstration annually. competency Clean -Up Assisting on plant or with property. Clean or directing -Up Supervisors: clean-up efforts 40 training 1910.1200 applicable Clean -hour Plans), -Up in 1910.134 HAZWOPER or 29 (Hazard safety Clean CFR (Respiratory and -Up 1910.38 Communication), health Supervisors: training, plus (Emergency Protection), training proper and made Action other necessary by tasks expected to be performed. Page 12 of 43 sij ri is Ir -, v :,„ Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management irj 4i - n* 44 e. r e bi 3 • by , 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. 5. 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 ek. ea 4 s iDocument 'Its! Document #: 2.2 Revision it: 1 Revision Date: 7/21/2017 Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management irj 4. 4,4 44 4 a • bi 3 • by , a Drill/Exercise Type: Scope & Objective: Date & Time: Facility: Participating Agency: Location Alarm Initiated: Yes No N/A EVALUATION CRITERIA COMMENTS/ACTIONS 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 how it differs from daily operations? the 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 of and area? 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 effort 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 manner? in a timely and effective ❑ ❑ ❑ Overall Effectiveness of Emergency Response Plan a. Were objectives of drill/exercise achieved? ❑ ❑ ❑ 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 !kiwi:4 \ tJr Ir Ai . Document ##: 2.2 Revision it: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management 4 --*-411 a* 4 a 0414 * ika newspaper, etc.), Discovery Midstream will utilize a representative from the Tenil 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 ek. ea lik Ir -, y slip-IDE Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management irj 4- * 44 e. r e bi 3 • by , 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 o143 !kiwi:4 \ It • 1 tit j Document ##: 2.2 Revision it: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management 4 --*-411 a* 4 a 0414 * ika 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 ek. ea lik n -, v Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management irj 4-114* 44 440 e bsb 3 • 4 _ .1 • 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 auttention, 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@employerflexible.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 i d 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 EIS department. Incident Response General Actions The first person at the scene of an emergency may be faced with a complex sit tion. 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 .4 thi is ,1 :,„ Ir it Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management irj 40-W444,4 043 • Scan surroundings to ensure own safety and safety of those who may enter area. general assessment of situation will help clarify actions required. If person(s) with injuries are present, con ct 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. 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 Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) ek. ea tV Ip % Location: Section 2— Incident Reporting and Management irj a_ nit 4444 r d b.i 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 I iscovery 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 t 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 andior 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 riss,•4 , II wr Ir -• j Document #: 2.2 Revision it: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management 4 �_ tit a* 4 a tub 4 * ttiv ,4 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 !kiwi:4 , II EPP r iii -. i trip! i Document #: 2.2 Revision it: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management 4 --*-411 a* 4 a 0414 * a _ 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: 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 / 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 !kiwi:4 \ tJr Ir Ai . Document ##: 2.2 Revision it: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management 4 --*-411 a* 4 a 0414 * ika .. 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 !kiwi:4 \ It • 1 tit j Document ##: 2.2 Revision it: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management 4 --*-411 a* 4 a 0414 * ika _ 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 15 01) 3. Investigation Page 24 of 43 Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) ek. ea Svti Ip % Location: Section 2— Incident Reporting and Management irj 4_ t a a "bib: 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 othersworking 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 / 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 I 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. 3. 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 !kiwi:4 101 ra It . rip! j Document ##: 2.2 Revision it: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management 4 --*-411 a* 4 a 0414 * ika _ 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/fire. 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 ari) Eie. C4 \Moats • 1 tit i Document ##: 2.2 Revision it: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management 4 --*-411 a* 441 044 * ika _ 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 ek. ea 1 Et? . i Document #: 2.2 Revision it: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management irj if 3 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 riES4 /ZIP! i Document ##: 2.2 Revision it: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management 4 --*-411 a* 441 044 * ika 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 (ESD) 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) C urrent 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 (SDS) 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 .4 thi is Ir -, ,1 :,„ Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management irj 4...n el 44 e. r # bi 3 • 4 v , 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 .4 thi is Ir -, ,1 :,„ Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management irj 4- * 44 e. r e bi 3 • by , Discovery Operations Center: 1. Notify irector of Operations 2. ial 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 make a determination of when it is safe to re- enter the building/area. BOMB THREAT INFORMATION CHECKLIST INSTRUCTIONS: Be calm, 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 ek. ea . E,t? Document #: 2.2 Revision it: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management irj a. an 4444 e. r # 4 3 • a, v , 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 ❑ Foreign ❑ Region ❑ Stutter ❑ Nasal ❑ Slurred ❑ Familiar ❑ Other: ❑ Other: ❑ Lisp ❑ Other: Manner: ❑ Calm ❑ Angry ❑ Rational Language: ❑ Excellent ❑ Good Background: ❑ Trains ❑ Music Noises ❑ Irrational ❑ Coherent ❑ Incoherent Fair ❑ Poor ❑ 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 ek. ea I Et? Document #: 2.2 Revision it: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Location: Section 2 — Incident Reporting and Management irj a- * a4 4 r # 3 • ta,v , 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 ek. ea :I;IPI i al i Document #: 2.2 Revision it: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DER)} Walton: Section 2 — Incident Reporting and Management if irj 3 b 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 .4 thi is ,1 :,„ Ir -, Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management irj 4i - n* 44 e. r e bi 3 • by , Appendix A — Emergency Contact List rjEltSivEseit EMERGENCY CONTACT NUMBERS Discovery Midstream Operations Center (DOC) 1-877-614-7183 Office Cellular First Response Coordinators 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/ 10 Group Office: (303) 433-4397 Cellular: (303) 507-0510 Health, Safety, Environmental HHS Consulting — Health and Safety Office: (888) 492-8001 Cellular: (303) 809-9401 Trihydro - Environmental Office: (800) 359-0251 Page 35 of 43 .4 thi is ,1 n . Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management irj a A, - saga 043 • 4v Medical Hospital: Platte Valley Medical Center Emergency: 911 Non -Emergency: (3O3) 498-1600 Ambulance: 911 Poison Control: (8'0) 222-1222 Life Flight: 911 Workers Compensation Employer Flexible (888) 983-5881 Fort Lu • ton Fire De artment Emergency: 911 Non -Emergency: (303) 857-4603 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 Emer 4 en cy Mana 4 em ent Office: (970) 304 6540 Emergency After Hours: (970) 350-9600 Adams County 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 j browni@e-47O.corn Chuck Weiss cweisse-47O.com Emergency: (303) 537-3409 Page 36 of 43 r4),\ birii St- 1 Document ##: 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 DISCS VERY 1 F 1 t^i alhin-O- 7 7t -4i1° rot 717+•CSC Ct,.2'S+G?-0• ,t. 311, 47-12` eaf. ta.gglr la. 70407-0" a 'a Si rr z'7 ttr- �ttt! flA Ito AIM - I, r r 77Jaar firEl a Iti IMo473e NOS P tiaant3 Fr — 'rmTCPr. WRLL ri- wait Ma all 1. I. I l•t.'H1:= a>< -a' s'sx to -'r cl PURE K_4. MULt ti 4 HOLD HOLD frsir-.fit UUCP! IP 1ELG - -OK$ RIP: --d Rrlu3t r1 MEP s PPIFI PIBPJ SCL BOO&TER am Akiii Mans L " NM. AOJG ---.2..6j k S Ifini FL►' .M P. . • -1 -L- _1 I r-rt n pi KO raw al RAG IL419G BC Fire Eittlingutsher 002 'Piro iixtiinguit..h er LEGEND Spill kit A Spill Kilt Wind Sock M vast Area r?, tc.Mit gelke L• MP RAG 1=1615R CZ 50.95 - Liz I'lllil41LJi T La P. Spill kit m c, - f aLH!'EIr }Y 42mssrl IDOL TR'_.G$t 1RS� L u -1 .rs r0WJ*I W BPS* or maul limn $ witaagai -a. FN6 voicr ' INC t1tutlt{IG sate TED Urn MIA, OATS -- NW ►5W\'A. 44t-I≥Jana' (Sat .g u apazser, pear; ->� •� supg MCM 75SQ PIT 91 Piet LA WIC Nan t. 11' Pia — aECE WS'& I •� :t'f 3'lJti5ltiair kR .. COWEISI164TE--•-•- TPM15RafY - 4 F ACC NNW ragas - a FOLD, e • S<. ♦ a .t.. is ION 0-- _ _ 1ifN A7 sut•F+ t — a . „I IbS�a 'mow t_ w f It elaaerwFra urre ! 1c'l lw 4 n 4 a • .— ttf SW 57Yt-t SL _Mr L tc,-/6R IF'.ITuMi l • to • . SO it • • • e �igrl4 flc Tr 1 -- FGLC Lilt fl --- a4'4lfinWC 5.>P a ratturt1O IE4 w v00 !t Ist?F-I'9 PC7l7+4Aaws'.4- t sG-oa s-tsrt @'•:�' r+ BOOM 67t�S 5Md ' - FlUill. G1 - - - , r 9t7tUDIXR el) w _ • n CDUD a i r i1liYP• *—• EE L1— [ Tel I r --A aE a p a� • I':- r t ~"IL`.pftR 4" wai ff,, p. a • ELECTRIC nat COM1II'llLeaflet un_fly fRgiggstirefeFIR 14 CO Unitirr tiiteatitORtillfta r L r^ ROCroc+i T4tale rill fir POC-Nbr. a I T _ , I I Y —S a e LI, - / J � — - c-- _fit 7 - _ ncora. Page 37 of 43 rises*, 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 410 :4 - 'a ; , d 0 t UZ Appendix C — Discovery CDP Muster Area Map DISC O VERY ₹ f _ — _ y - I_IEGEThrE> I I iti Sn E�aiiS ilia yr �i iakF I l is 1i- &o ap C. C —..f row I I irman liear +wE r+Fj _.lf ..a. dir".c.rL ''+ Y _ - n a PI .rr drr! rdSlaabaa JJJJEEII I _I I _i__ a' ray: iT I `I I 11 I IVR� trite dial" ~it h, 40sili Y Ytba• rawerraaarasaeo Ol aarr rlasi." UM AtEd, Vier uceatrera FOP QWI.! Ie -.L. o ar ar.s.. s Barra ^.v __ - ii 12 t Iula Mate'at i -- r _ WM nlilli lb Satan I '� - • r We rr: r.tir 7rsr. IRn9yf 3g - alll•!i r+4 !� �vtr at elan trru s Rsoacr -= .+c. a.ac s wry . Y s_, i a , oor�crarar-+ne r_-ar� a��r.a r ' - - - �-rams!— I I v' II , LA IP./�a a a. rae r p ,v raa •i T T i A5t7� i ale. Sale '.` Mkaa:tatSi - _ - - - _ - - - -.- - aat !a\'. mr a Salle Writ OrISJIMIR.raaa 1rr wr rra itai J aara. aar•aar Watt a@.ad1 allIEl0illig8 la ara�r.t•ara! aiime-tibiaswi F aerie .a"i •rgaeSIIIIR Sri -Mae nag* llla�4iri . /Y Mal IlliaA r -r - •-s- --- j tin litlatil I MS ire i ... b bp t % bbp 1p1 k _ : e s F s E. - s i s Ni Ti - le a �' t •Ma tr ellea a} �fi .i�f"�••.n DI C' 6 € FIZ'`�'` CHSCOVERY ear SERVICES, if.C. C I x phati eRIGICICIN ICDP FACILITY OVERALL STE PLAN matarrum,co G r irk - goo ZION 'ENGINEERING, LLc rat lailimmilmlanIIII St ''Mral•Oli1 I . I r]r rnn.,rn'I I 'C, *amI r MIS an . I SAS al S a. LE h•i..NMI t ...1 I. RI . e J li LEGEND B Fits Extinguisher coZ Fits Extinguisher al:`l °EP not r rca Page 38 of 43 ri) !# ►+eat \Pt `j Document U: 2.2 Revision It 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management APF , ILI.,._�,, w .,�,� Appendix D — Accident Analysis Report (Example — Page 1) Employer Flexibl& Impact what matters Report Only ■ Seeking Medical Attention II 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. ■ ■ 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 ■ State: ZIP code: Same as establishment? ■ 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? U Yes ■ No Length of service in current position: Length of Service in Occupation: Time shift started: a.m. p.m. ■ Witnesses? ■ Yes ■ No Name of Witnesses: Name of physician or clinic: Address of physician or clinic: City Fatality? ■ Yes ■ No If yes, date of death: State ZIP code Page 39 of 43 ECletiliyimitp . Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management 4$ 4 F n 44 .40ifs Appendix D — Accident Analysis Report (Example — Page 2) e 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? ■ Yes ■ No If Yes: Type: Instructed by: When i n st ru cte d : Attach appropriate training documentation. Length of training: Completed by: Title: Print Date of Investigation: Sign Page 40 of 43 EC11)7mitp . Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Section 2 — Incident Reporting and Management 4$ 4 F n 44 .,040Location: 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: PSI : 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 !# ►+ri) \fatitit Document U: 2.2 Revision It 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management aF , .,._�,, w .,�,� Appendix E Post Injury Treatment Authorization orization for Preferred Provider Networks Form (Example - Page 2) Special Instructions/comments: Company has modified duty available. Please be advised that company prefers over the counter medication vs. prescription medication due to OSHA recordkeeping requirements. Billing: Refer to Employer Flexible WC Protocol Attn: Lynn Dollins l i n s Phone: 281.377.7604 Fax: 281.377.7029 Employer Flexible Safety & Risk Risk Main: 1.888.983.5881 hsk@employerflexible.com Appendix F — Employees Notice of Injury (Example) Page 42 of 43 ratjilSra quit f La, 4:1/4.01) :,,s Document #: 2.2 Revision #: 1 Revision Date: 7/21/2017 Document Name: Discovery Emergency Response Plan (DERP) Location: Section 2 — Incident Reporting and Management .; �� , 7850 Notice Houston Houston, 281,377.7604 281.377 Texas Parkway of West, Injury Suite 100 Employees North Phone: Sam Fax: 77064 7029 `Employee Name (last, first, middle; Social Security it: Phone: Street Address City State Zip Code Occupation: a State employment agreement made: where wa.s Average weekly wage: Length Months of employment: 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' compensation defect or military injury that may impact the 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 carrier shall promptly report in writing to the employer or insurance carrier and change in material fact, or the amount of income he/she is receiving, or any change in his/her employment status, 9ccurring 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' compersation fraud, upon conviction, shall be guilty of a felony. Upon Filing this Notice of Accidental Injury and Clam for Compensation permission is given to the Administrator of the Workers' Court, the Insurance Commissioner, the Attorney General, a District Attorney, the Insurance adjuster or their designees authorizes medical records, including waiver of any privilege granted by law concerning communications made to a physician or health care knowledge obtained by such physician or health care provider by personal examination. The information authorization for release may include information, which may be considered, a communicable, or venereal disease include but not limited to diseases such as hepatitis, syphilis, gonorrhea, and the human immunodeficiency virus, also known as syndrome. Signed this day of , Compensation provider acquired them what access which deficiency any All rights or may matters"' reserved to records. Employee Signature This form constitutes a medical authorization for release of medical evidentiary privilege by law_ Printed Employee Name Nothing shall be constructed e Employer to Flexible waive, Impact Copyright limit 2013, or impair FlexibleTM Employer Page 43 of 43 Rocky Mountain Miistream, LLC Unoccupied Compression/Treating Station Noise Mitigation 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. N ■ .�-�/ V1i!Iiarns.Document '+s'"' Document #: Revision 4#: Li Revision Date: 11/15/2018 Name: Noise Mitigation and Compliance Plan Location: Rocky Mountain Midstream Compressor Station (unoccupied) TABLE OF CONTENTS Title Page I Table of Contents 2 Purpose 3 Scope 3 Definitions 3 Responsibility 3 Guidelines 3 Document Management Log ■ Williams. ice:m.000r Document : Revision #: Li Revision Date: 11/15/2018 Document Name: Noise Mitigation and Compliance Plan Location: Rocky Mountain Midstream Compressor Station (unoccupied) P urpose 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. ■ Williams. ice:m.000r Document : Revision #: Li 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 3rd 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. s .a ---AD VIi!I:arns. Lastisreoe„soor Document #: Revision 4#: Li Revision Date: 11/15/2018 Document Name: Noise Mitigation and Compliance Plan Location: Rocky Mountain Midstream Compressor Station (unoccupied) Document Management Log AUTHORS document was prepared by: This Name Matthew C. Norton HE Compliance Supervisor Title Asset Phone Email VERSION HISTORY / CHANGE LOG REVISION RECORD APPROVAL SIGNATURES Version Date Version No. Description of c P h an e f Rem arks Name of Revising Party A rover i nature PP draft Initial Draft and Review N/A N/A 0710412018 1.o Incorporate application final edits submittal for M Norton e_ ?dark 11115/2018 1.1 Ownership, formatting updates. position titles, header J Kinniniiilloaeld ' . - - . Behrens and Associates, Inc. Environmental Noise Control November 20, 2018 Rocky Mountain Midstream 7859 Walnut Hill Lane, Suite 335 Dallas, TX 75320 Attention: Scott Elery Subject: Ambient Sound Level Report Re: Proposed Latham Compressor Station Dear Mr. Elery: Per your request, an ambient sound level survey was performed near the proposed Latham Compressor Station in Greeley, Colorado from Friday November 16, to Monday November 19, 2018 to measure and document the ambient sound levels near the site. The following report documents our findings. Ambient Sound Level Survey An ambient sound level survey, including A -weighted dB(A) sound level data, was performed for the proposed Latham Compressor Station to measure and document ambient sound levels for hourly, 15 minute and daily Leg averages during typical operations. Per Colorado Revised. Statue (CRS) Title 25, Sec. 2 5-12-103 Measurements with sound level meters shall be made when the wind velocity at the time and place of such measurement is not more than five miles per hour. The sound level averages in Table 1 omit the data collected where the wind speed exceeded 5 miles per hour. Sound Measurement and Modeling Instrumentation The instrumentation used for the monitoring location was a Type 1 Svantek model 971 integrating and logging sound level meter with windscreen, which was calibrated prior to deployment. The metering system was deployed in accordance with ANSI standards, and in a locked box for security. The measured noise levels are presented graphically in Attachments 2 & 3 and in tabulated form in Attachment 4. The noise levels were used to determine the typical daytime (7am to 7pm) and nighttime (7pm to 7am) averages at the monitored location. The equivalent sound level, or Leq, is a sound energy average, calculated over a stated time period. The overall daytime and nighttime averages were calculated using the hourly average Leq noise levels measured at each location over the entire deployment period. The calculated average daytime and nighttime noise levels are summarized in Table 1. Corporate Office: Hawthorne,California Carson, California - Aledo, Texas - Napa, California - Longmont, Colorado - McDonald, Pennsylvania Calgary, Canada Phone 800-679-8633 Fax 310-331-1538 www.environmental-noise-controLeom www.drillingnoisecontrol.com Behrens and Associates, Inc. Environmental Noise Control Table 1 Rocky Mountain Midstream - Latham Compressor Station Average Noise Daytime Aml ie nt Levels Ave rage Noise Nighttime Levels Ambient dBA dBA 46.5 41.7 Very truly yours, Colin M. Droishagen Lead Acoustical Technician Corporate Office: Hawthorne, California Carson, California — Aledo, Texas — Napa, California Longmont, Colorado — McDonald, Pennsylvania Calgary, Canada Phone 800-679-8633 Fax 310-331-1538 www.environmental-noise-control.eom www.drillingnoisecontrol.com Attachment I Ambient Noise Monitoring Location Behrens and Associates, Inc. Environmental Noise Control Rocky Mountain Midstream Latham Compressor Station Ambient Sound Level Survey cBA Wind 85 30 80 75 70 65 60 55 Cm 50 0 45 Sound Leve 40 35 30 25 20 15 10 5 a 0 0 0 0 0 cg's, 1 < < C < 9. Cs Co O CI 0 9. ... ... .. .. .. .4 m r-� tri -4•1%..-40#4\—sedual..afts,-- C C o .. ... .. .. .. tom-, m cn November 16- November 19, 2018 eire < O. O- O. Q- O- < < < < < © 0 0 0 0 0 a a a s a a= a 0 0 0 0 © 0 a a c a a a l°4 t*- m C el 25 20 s 15 O- 10 5 Attachment 2 Behrens and Associates, Inc. Environmental Noise Control °' C Sound [eve 80 75 70 65 60 55 SO 45 40 35 30 25 20 is 10 5 o Rocky Mountain Midstream Latham Compressor Station Ambient Sound Level Survey i d BA —Wind cL ' . mmmm z < < ed C cc cc < a. GL a. a. �. �. a. a. �. 'ft 'c ` < < `d ` `o a. �. �. cL c�. a. a. cL a. a. �. < < .d < cc ed < < Cr C� O© 0000000 ' c co O co c c c co c 0© 0 C� C� C}cC 0 C� Q O O o c a c c Oico c c to000©0000 O O© cC O O C O©0000© o co toc cc O co c° c o o CrC�Crc)Crocc C�ciNrnrnmmrnrr�mmmrnrnroromr�enrnmrarnmmmmrnmrnrommrnrommmenrnrorri enroro rir enrorornrnmmrnmmrnerromm J mot' i F■- 66 fi, 0 ri ;Li rw m 4 er; L:r; cD i 1: r i c:ra 66A:66 er 5 6 kJ w r1� �t u'� ci A: 0 Gti 'Q 1 r -I rn u A:66 4J, cC rl 1 !Heir' Cr November 16- November 19, 2018 30 25 20 is O- 10 S C Attachment 3 Behrens and Associates, Inc. Environmental Noise Control Rocky Mountain Midstream - Latham Compressor Station Hourly Averages Time dBA lime dBA 1:00 PM 55.5 1:00 AM 39.4 2:00 PM 46.9 2:00 AM 37.5 3:00 PM 45.8 3:00 AM 36.8 4:00 PM 48.7 4:00 AM 35.9 5:00 PM 48.0 5:00 AM 38.7 6:00 PM 54.9 6:00 AM • 38.4 7:00 PM 55.4 7:00 AM 3 K9 8:00 PM 49.7 • 8:00 AM 42.2 9:00 PM 52.6 9:00 AM 42.7 10:00 PM 46.2 10:00 AM 42.3 1 1 :00 PM 52.3 11:00 AM 43.5 Sat 17 -Nov 39.2 12:00 PM 42.3 1:00 AM 38.5 1:00 PM 42.8 2:00 AM 36.8 2:00 PM 40,8 3:00 AM 40.3 3:00 PM 42.5 4:00 AM 4`x.9 4:00 PM 51.4 5:00 AM 47.5 5:00 PM 42,9 6:00 AM 59.7 6:00 PM 43.6 7:00 AM 61.3 7.00 PM 43.6 8:00 AM 58.8 8:00 PM 43.9 9:00AM 57.2 9:00 PM 41.8 10:00 AM 55.3 10:00 PM 41.6 1 1:00 AM 52.4 11:00 PM 41.7 12:00 PM 49.6 Mon 19 -Nov 39.1 1:00 PM 50.1 1:00 AM 41.3 2:00 PM 49.3 2:00 AM 42,6 3:00 PM 43.9 3:00 AM 40.6 4:00 PM 39.7 4:00 AM 43.1 5:00 PM 37.0 5:00 AM 47,4 6:00 PM 34.0 6:00 AM 48.7 7:00 PM 34.8 7:00 AM 49.8 8:00 PM 36.9 8:00 AM 47.4 9:00 PM 33.5 9:00 AM 43.3 10:00 PM 31.0 10:00 AM 43.5 11:00 PM 30.3 11:00 AM 43.5 Sun 18 -Nov 37.8 12:00 PM 39.5 Attachment 4 atsiarr Integrated Management System Operating Requirements Rocky Mountain Midstream Emergency Response Plan Rocky Mountain Midstream Emergency Response Plan 10.00.70.02 Revision 01 Effective Date 12/1412017 Emergency Response Plan Broomfield Compressor Station Scope and Description The Broomfield Compressor Station is composed of three caterpillar 3608 compressors in two phases along with an inlet slug catcher, pig launcher, two metering buildings, one A►Ico dehy and one conventional dehy. There is one 16" outlet from the site. This site has Produced Water, Waste Water, Lube Oil, Glycol, TEG and Antifreeze tanks of various sizes. Some equipment may be turned off and placed in a ready for service state or idled depending on system operations. Compression is used for compressing natural gas prior to gas processing/treatment and the separators remove entrained liquids from the gas stream. This site is subject to all hazards associated with natural gas and liquids as it is a two phase stream of liquids and gas going to Ft. Lupton Gas Plant. Geographic Location: Township 1 North, Range 67 West, Section 29 Area Office Phone Number: Compressor Station Address: Revision Number: 01 Revision Date: 1/03/19 Last Review Date: 1/03/19 TABLE OF CONTENTS 1.0 GENERAL 2 2.0 RECOGNITION, REPORTING AND NOTIFICATION2 .0 RESPONSE ACTIONS 4 4.0 POST EMERGENCY ACTIVITIES 7 ' Refer to 03.00.71.03 — Plans Required of Facilities -Pipelines and address all items in the "Required in Plan" portion in your ERP. 10.00.70.02 Revision 01 Page 1 of 15 Effective Date 12/14/2017 Williams.; '� Integrated Management System 1.0 GENERAL 1.1 Overview Operating Requirements 0 Rocky Mountain Midstream Emergency Response Plan An Emergency Response is a response effort by company employees or designated responders (fire departments, paramedics, police, etc.) to an Emergency Event. An Emergency Event is an unexpected event, which, if not responded to immediately, has the potential to cause large-scale injury to humans and/or damage to the environment or property. An Emergency Event may include, but is not limited to: • Uncontrolled Fire, • Gas detected inside or near a building, • Extreme weather conditions (flooding, blizzard, hurricane, tornado), • Explosions (accidental or intentional, as in a bombing), • Pipeline or equipment (vessels, etc.) rupture or serious leak, • Releases of hazardous chemicals (accidental or intentional), The nature of an Emergency Event will dictate the level of response and emergency actions necessary. Protection of human life and safety pre-empts the protection of the environment or property. Incidents not considered an Emergency Event include: • Incidental releases of hazardous substances where no potential safety or health hazards exists, and where the substance can be absorbed, neutralized, or otherwise controlled by trained personnel i.n the immediate release area. • Small, quickly contained (incipient stage) fires • Other minor incidental events where there are no potential safety or health hazards. Post -Emergency Response includes activities performed after the immediate threat of an emergency is stabilized or eliminated. Activities such as repairs, decontamination, and cleanup of the site are considered post -Emergency Response. These are not considered a part of the Emergency Response, so long as there is no further emergency condition or immediate threat of an emergency condition. 2.0 RECOGNITION, REPORTING AND NOTIFICATION 2.1 Recognition, Reporting and Notification - 2.1.1 Upon recognition of an Emergency Event, authorized persons must activate local alarms and/or warning devices. Press ESD; Sound the emergency siren if applicable. If off -site assistance is required, immediately call 911. When requesting emergency service via 911 (or otherwise), emergency responders are to be advised of the "physical address" of where we expect them to respond. Give basic directions. 2 The activities of 2.1.1 through 2.1.3 may occur simultaneously, depending on the exigency of the situation. 10.00.70.02 Revision 01 Page 2 of 15 Effective Date 12/14/2017 Williams.; x Integrated Management System Operating Requirements 0 Rocky Mountain Midstream Emergency Response Plan 2.1.2 Summon Emergency Response Agencies (ERAs) in order listed in Table 2.1.2. TABLE 2.1.2 - EMERGENCY RESPONSE AGENCIES - TELEPHONE NUMBERS Agency or Individual Telephone Number 911 Emergency (fire, ambulance, sheriff) 911 Agency Non -Emergency Number Brigton Fire Dept. Main Office 8-5 M -F 303-659-4101 Brighton Police Dept. 303-655-2300 Weld County Sheriff 970-356-4000 State Highway Patrol 303-857-6638 970-304-6540 Weld County Emergency Management 970-350-9600 Weld County Emergency Management after hours Platte Valley Medical Center 303-498-1600 United Power — Utility Company 303-637-1300 2.1.3 2.1.4 2.1.5 Notify Pipeline Control (800-635-7400). Follow 11.05.00.01 — Incident Notification and Reporting. Notify the Required Contacts (Area Manager, Supervisor, etc,) in order listed in Table 2.1.4. Notify Additional Contacts listed in Table 2.1.4 as needed to ensure an adequate response. TABLE 2.1.4 - REQUIRED CONTACTS (INTERNAL) NAME WORK # I MOBILE # HOME # TITLE Matt Hastings Director and Engineering of Ops 405-664-7823 Cory Kline Ops Manager 970-987-2527 Michael Minnehan Ops Supervisor 402-613-7711 Josh Bruce Ops Supervisor 970-776-6851 Craig Strother Ops Supervisor 970-210-2411 Matt Norton EHS Supervisor 817-455-5799 Tyler Whorton Safety Rep. I 620-242-4312 10.00.70.02 Revision 01 Page 3 of 15 Effective Date 12/14/2017 William. /4-4..iset••••' Integrated Management System Operating Requirements Rocky Mountain Midstream Emergency Response Plan ADDITIONAL CONTACTS (INTERNAL) NAME WORK # MOBILE # HOME # TITLE Jacob Herzog Engineer 505-427-9643 Lito White Engineer 303-717-9808 Blaine Prichett Manager Projects 720-412-0182 Erin Vandagriff FOA 817-781-4512 2.1.6 Notify residents identified as public receptors in accordance with Risk Management Plans (RMP) when necessary. Maps of RMP facility public receptor locations are in Attachment A. A list of public receptors is in Table 2.1.5. TABLE 2.1.5 — PUBLIC RECEPTOR CONTACTS (RMP FACILITIES ONLY) LOCATION WORK # MOBILE # NAME HOME # N/A N/A N/A N/A h N/A 2.1.7 2.1.8 In accordance with 11.05.00.01 — Incident Notification and Reporting procedure, report onshore releases and spills to (855- 945- 5762). In accordance with 11.05.00.01 — Incident Notification and Reporting procedure, report offshore releases and spills to O'Brien's Oil Pollution Services (OOPS) at (985-781-0804), Williams Environmental Specialistand the DOT Compliance Specialist. 3.0 RESPONSE ACTIONS 3.1 Evacuation 3.1.1 If personnel are onsite when an Emergency Event occurs, they should evacuate to a pre -determined point upwind, uphill and upgrade. 3.1.1.1 Take the following actions as necessary to ensure a safe response to potential emergency events: • Evacuate the premises. • Locate upwind, uphill, and upgrade of the incident. Trained facility personnel may also designate a credible alternate path or route to evacuate personnel. Refer to the "evacuation plot plans" located in each facility. • Account for all personnel. 3.1.2 When the evacuation is complete, account for all personnel before proceeding. 3.1.2.1 Personnel assembled at the mustering station are accounted for by means of the F2-004 Visitor Sign In Log or applicable forms. 10.00.70.02 Revision 01 Page 4 of 15 Effective Date 12/14/2017 Williams.; '� Integrated Management System 3.1.2.2 Operating Requirements 0 Rocky Mountain Midstream Emergency Response Plan Personnel are cross referenced with the sign in logs the missing are listed and compared with attendance at the other mustering stations. Incident Commander/911 Dispatch will manage evacuation of citizens. NOTE: Some employees may delay evacuation until critical functions have been performed such as closing valves, etc. However, these functions do not take precedence over an employee's safety. If an employee feels he or she is in danger, they should evacuate immediately. 3.2 Operator Qualification — Covered Tasks 3.2.1 Any activity that has been determined to be a covered task must be performed by a qualified individual during emergency situations. Span of control may be used during these emergencies. 3.3 Shut -Downs or Pressure Reductions 3.3.1 Perform emergency shutdown, pressure reduction and/or venting of the affected asset (pipelines and pipeline systems, plants, pump and compressor stations, etc.) necessary to minimize hazards to life or property. 3.3.1.1 If this ERP covers a DOT jurisdictional pipeline controlled by Pipeline Control, Pipeline Controllers will follow all appropriate Pipeline Control Site / Segment Specific Procedures necessary to minimize hazards to life or property. If this ERP does not cover a DOT jurisdictional pipeline operated by Pipeline control; list the steps to accomplish 3.3.1 or refer to and link to your site -specific procedures. 3.4 Response (From a Remote Site) 3.4.1 First Responders (company personnel who arrive at the Emergency Event site first) should observe and evaluate the general conditions before taking further action. 3.4.2 Offensive mitigation actions may not be attempted until ICS is established. 3.5 Isolate and Deny Access or Entry 3.5.1 In conjunction with. Emergency Response Agencies, isolate the scene of the Emergency Event. The following actions may be taken: 3.5.1.1 Establish perimeter controls to keep persons out of any potentially hazardous areas 3.5.1.2 Reroute traffic around the area 3.5.1.3 Identify and remove ignition sources (e.g. - pilot lights, engines, motors, etc.) 3.5.1.4 Identify and contact railroads, roadways, shipping lanes, flight paths, utilities, etc. which may need closed or shut down due to the event. 3.6 Establish Incident Command (ICS) 3.6.1 Establish the Incident Command System (ICS) and appoint a Safety Officer. 10.00.70.02 Revision 01 Page 5of15 Effective Date 12/14/2017 Williams.; '� Integrated Management System 3.6.1.1 3.6.1.2 Operating Requirements 0 Rocky Mountain Midstream Emergency Response Plan ICS positions beyond these two required positions should match the complexity of the situation. The entire Incident Command structure is shown in Attachment C. 3.6.2 Establish the Hot (Red), Warm (Yellow, and Cold (Green) zones. The North American Emergency Response Guidebook (NAERG) should be used initially to establish the boundary between red and green zones. Then, use air monitoring equipment and incident command judgment to refine the size and shape of the red zone. A warm (yellow) zone should also be established in the area of no gas detection between the red and green zones as a buffer between the red and green zones. Decontamination should be set up in the Warm zone. 3.6.3 Establish reliable communication methods between individuals who will play an active role in the response. 3.6.3.1 An alternate means of communications may need to be available. 3.6.3.2 Communication systems of the police, fire departments or highway patrol should be used only if communications cannot be established and maintained with company equipment. 317 Identify Hazardous Materials 3.7.1 The identity of most, if not all, hazardous materials spilled or released during an Emergency Event involving Company assets is typically easy to ascertain due to the hazardous materials' properties (e.g. — natural gas, crude oil, condensate, etc.). Utilize SDS(s) or the NAERG to identify risks associated with spilled or released hazardous materials. SDS(s) are online at MSDS Online, are available by calling MSDS Online at 888-362-7416 and/or may be attached to this Plan in Attachment B. 3.8 Personal Protective Equipment (PPE) 3.8.1 Select PPE appropriate to the situation, taking into account such variables as the properties of any spilled hazardous materials and hazards introduced by the response and by reviewing the appropriate SDS(s) for the levels of protection. SDS(s) are online at MSDS Online, are available by calling MSDS Online at 888-362-7416 and/or may be attached to this Plan in Attachment B. 3.9 Site Control 3.9.1 10.00.70.02 Revision 01 Identify and initiate appropriate confinement and/or control methods based upon the nature of the incident. This may require the use of company and third party resources. The location and nature of available company owned and third party provided equipment, tool's, materials, manpower and other resources are listed in Table 3.8.1. Page 6 of 15 Effective Date 12/14/2017 Williams.; '� Integrated Management System Operating Requirements 0 Rocky Mountain Midstream Emergency Response Plan TABLE 3.8.1 — AVAILABLE RESOURCES (add rows if necessary, delete unused rows) RESOURCE (Location (Location, Contact LOCATION of Company name, provided owned equipment) phone numbers Resources) of third party (Company Equipment/Tools/Materials/Manpower/Other) owned and third party provided 3.10 Protective Actions 3.10.1 Identify and employ appropriate evacuation measures and/or shelter -in -place options for persons affected or displaced by the event. 3.11 Repairs and Mitigating Actions 3.11.1 3.11.2 3.11.3 If offensive mitigating actions are conducted, they must be in a brief written plan that is developed and communicated to the entire repair or offensive group through a field briefing. Consider the preservation and protection of evidence, samples, failed components, etc. in any repair plans. The Incident Commander will ensure significant pieces of evidence (samples, failed components, etc.) are appropriately identified, labeled, photographed, collected, catalogued and preserved. 4.0 POST EMERGENCY ACTIVITIES 4.1 Restoration of Service 4.1.1 Follow the appropriate site -specific operating and Maintenance Procedures and Pipeline Control Procedures when restoring service and returning to normal operations. 4.2 Decontamination 4.2.1 The Incident Commander will establish and provide decontamination. When required, decontamination should be established in the warm (Yello zone. 4.3 Termination 4.3.1 The termination phase is important for the safe, effective and legally sound conclusion of Emergency Event operations. The termination phase begins after the immediate threat of the Emergency Event has been stabilized or eliminated (usually at the time repairs begin). 4.3.2 Termination may include equipment status evaluation, personnel debriefings and/or personnel assignments for post -incident critique, etc. 4.3.3 A debriefing with any third party responder must be held before their release. 10.00.70.02 Revision 01 Page 7 of 15 Effective Date 12/14/2017 William. /4-4..iset••••' Integrated Management System 4,4 Disposal 4.4..1 4.5 Medical 4.5,1 4.5.2 4.5.3 Operating Requirementslill Rocky Mountain Midstream Emergency Response Plan The Incident Commander will ensure appropriate disposal of all materials and contaminated soils. Enlist the support of the area Environmental Specialist. recovered Report all injuries and exposures in accordance with 02.00.70.02 — Accident Reporting. Only those individuals that have been properly trained and have demonstrated capability can provide First Aid and CPR. Any treatment beyond First Aid or CPR will be performed by trained medical professionals. 4.6 Documentation 4.6.1 4.7 Critique 4.7.1 The Incident Commander will ensure all necessary documentation is gathered, organized and submitted to the Safety Representative. The Incident Commander, in conjunction with the Safety Representative, will schedule a critique of the Emergency Response and inform affected personnel. Document the critique on M02-032 — Emergency Response or Drill. 10.00.70.02 Revision 01 Page8of 15 Effective Date 12/14/2017 Wills sq terrInfegrafed Management System 1 I 10.00.70.02 Revision 01 A I I IC Operating Requirements(9 Rocky Mountain Midstream Emergency Response Plan ATTACHMENT A MAPS AND DRAWINGS I IS I I I I LEGEND USRI--�th LOG CROQh4FITELD CQMPR USQR STATION -�__I.LL sL1�--- . - k . - RION'T-BF-War DISCOVERY 0J BASIN FIELD CONPR.ESSEON SEC, 30 M', n $j MC, aa� } .- — - - — PROPERTY LINE PLOT PLAN 111 j 'III -LO COUNTY, COLMOO 0345 — SECTT[6TiLIwEs PARCEL NO, 146322001O34S 63249O RE 4 _5. f BOMB ll �- C>+1AIC4AGE TLOHN.aRI>aw �••� 'MACRO p ERECTION A 4RA4A AYt ut A "rn _ ''� I j 17 — — L. - RECYCLED ED ASPHALT RAVEN ENT ( - -r - T 5 igiriSCP at itOPOIRD CliAGN LINK PENCE IP.Alf; I -- SW EAssewT LINE I SRC 11 ".E . U A SCr.;r MAP VICINIT NONNI LEASE CORNER. 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T 51st 11s Funny I , i LEGAL DESCRIPTION 4, a ', SUU AATION - ' CON STRUCnON IN; � ]' ��' � I ' TRAILERS o 2 ^° j lit31J1WtC'1 MAO LOCALW Ir1 PAR] Or TIC NORTHEAST 114 EE ' �" F **�I'ORNRTI - I Gtr THE SOUTH tM 114 Of S EC7104114, TOW NMI P Ca NOM IwvMI 67 MST & 9GYFDELD COMPRESSOR STAT7CN m I mTtl PR:MCIPA4a MERIDIANW13.17COUNTY, STATC or IXINCIH.ADPi FJRD©METELD LOCATION 17 1 I J 9,995 Ci0 — BROO , ORWD© 1 - ACRES I- I ' USR1B-fl06 I 5° .IL - luau 't z i' a • I� IN CASE OF EIERGS CY CALL! 97 L ri 11 1 _ NOTES BRIGHTON FIRE PROTECTION •. `.-'+ n a DISTRICT! 0 30311 283 .1535 all 1 I} S1YT :.I ' -': O rnp � f �{, ,y� C.) 1) t Tie \ �. Iw I, PROPOIS-EDI SITE ACCIMS WILL BE FROM WELD COUNTY MAID 17, WCR A7 IS COUNTY COMPANY EMERGENCY CONTACT Yl JRAIAT . _ `W J i 1- J • r I MAWTAINED WLIM AA EXISTING SC RFOHT-OFsWAY1 (617)414,4110 O J I I ^ r' �. _ r - r f} `21 r " 1I2 i° �� (. ) < J ns + ], THE SITE SURVEY FOR THIS PR4K{T W0.5 PREPARED &Y AICF0. AN, CML AhlR3 WAS f I l� II I 16 .. IL. I� MCTAL SPA -i , u RECEIVED JULY 2018, y Pii0uNTED TO i`i aOIH64. • 116 12$ 111 O — �'� - a9 HORIZONTAL O11TUM: BASED ON CDa_Ot.4EDD STATE PLANE COORDINA�, NDa.T7a POLPWPRIUET*s ^' z aw■ ,-.' ZONE. NORM AMERICAN F.CAILOWFA1. DAWN, LR8.3 (US SURVEY MET), CUD, METAL PRE I 315 c 1 VERTICAL D&TI.M : NORTH AMERICAN VERTICAL DATUM LOBE, ' I o p 1�� h Q ... UY2 I 111 I Icy 'L�It H 3. THE AND LIGHTING PLANS TO BE SUBMITTED AS SEPARATE �-� I 125? — : LANDSCAPING a y Hn „ins.—, ,I _ lI DOC4RSIENT:DWG BCS$'-300, LIGHTING PLAN NC SCHEDULE). I a a _ � I 1 • I 1116 aaaaaa� L rI LIGNTING WILL. BE DOWNCAST AND SHERDEPi 1161=7 Rd 12:46.*.1r, _p . t I ti COL( HDIIASF. 12*L o —I u f j I FOR POLES —tip- 1 � , 1.221₹1 Q Q 120 � 311 r -ii �� I I I I. °TS . 9-4—I II� �� I1 Kati: t1. 31d - L 4Y1I Mi. eki i 11 17HI PROJECT SIGN I I r 1 I II sRRN -- ill 1 5.1itDRAINAGE.StlALE } I I PEG uwn cH[3A SITE , 5 �1If6l44lNY LIST ___...m.,_, cI.V022 I • li4:ACOEII.SI17p3 aNLET op $14O'10 1$f122 MRS SKIP (TITER t COMM 41.- 9 EIY<D LOPHONC I. 'EASE .1a aNL1T SOW BOER WC it4/124 TEr1 (y TTAATi�IL Nk 250- sa.313 — II T' 113 WILDING ID INLET NETEEISCI SKIDKIDS +I > E D 1,65 305. 10 t— • - - - -�•-r= • �..-' ( 1112 ILO AiAl SKI4? ANk "MP 5%RIP 2L0P2T7 ZZ01121 +CC•riT"IAE pR SKIDS '4RU C?Dws*2ESS61U'h 811 ' - , _ sion/ we IS a Ill II 1,'`"'-' -- 0. 658,82' Nertelp�e. xliTltid CAS PIPELINES STDIL�IAA'ATER DE ctTlOk PONDI COH R JOHN f i DIA4dAG I1aHARD DESEGM VOLUME — 40337 CF N 2 251.701,;,-' IIS ltHt 117 FUEL iiA5: SKI6 3 PHASE SEP...Art 1R s[!I7 hf.YiNETBR SKID. 316I13L I 11,4718 411,M1 27 TEE 0EM'DrATION UMIT B—TEX UNITS �Oa1dATIShS ' `. O 2 IV MATING LTAL NO NUILD4TORL'i 7 illrA E 31635 964.90 it40,19 GAS NETER SKTO 4 M SLAP TANKS D emi PIPELINE IPARaL `, Di OPEZ94009451 Call6411754 IIET4f IO111� lYr++1=-;w tmOrie ,-- moth 1`-17' —, usti pOCfCl MO Uh.TAiN j�J f�� MIDSTREAM LIC R■l�if�il .air -w WELD COUNTY, 047 TFbE PPD2ECT NUMBER IlBUOMIIra l'rCCMPRES.SOR SIA1T N W1._a_s 5 O•I BASIN FI&bCdNPRE5#ION CIYI! C,1, L KLCrT PLAN i'Y'1i _,nITYlLYi P- "1�1:;rn1Ha Ansaeanal ---./rA.Fib 4e..-tw7*. m 'OA+s 4soIL . da/l+-.1. v.b..-1.- h�.Ira- 71P ?NM a 3GGtL7rr PGA MR 77n7rui nas warn nc5attLWlT %::1�7a in D WNVI NUMLI[R 8 PAS TNI+ A NEIL* MR Li.h.I KM -n' -'I 1,96 r g]If E ' II. ....K. l bank* reler�n A t•i �.h.eW.g•ra+ RI-►pR"°-••'T.!stne ' a .car -.rare,. ran r --..c5 130 S —CE -1() 4 9 ••••-• ftCTCRf.Fyi:f 7<R.dwlNc ReYI51ON5 ..b. iiispiammaapay. is.a,IZO .�., ,si.,..0 9wnAAllw.Mgr ll 'hl NWMIIIIN A D E r Page 9 of 15 Effective Date 12/1412017 a Williams.; x Integrated ated Management System Operating Requirements 0 Rocky Mountain Midstream Emergency Response Plan ATTACHMENT B MSDS (Attach appropriate MSDSs here) OR ACCESS SDS INFORMATION TELEPHONICALLY FROM MSDS ONLINE COMPANY (888- 362-7416) OR WEBSITE AT MSDS Online 10.00.70.02 Revision 01 Page 10 of 15 Effective Date 12/14/2017 Williams.; Integrated Management System Operating Requirements 0 Rocky Mountain Midstream Emergency Response Plan ATTACHMENT C INCIDENT COMMAND STRUCTURE Incident Commander Public Information Officer Liaison officer Safety Officer Operations Section Chief Planning Section Chief Staging Group Leader Repair Group Leader Containment Group Leader Logistics Section Chief Environmental Group Leader Situation Group Leader Finance Section Chief Communications Group Leader Security/Medical Group Leader Supply/Ground Support Group Leader Accounting Group Leader Claims Group Leader Legal Group Leader INCIDENT COMMANDER (IC) (REQUIRED) The Incident Commander (IC) manages all activities related to an Emergency Response. As such, the Incident Commander needs to be familiar with the contents of the Emergency Response Plan (ERP), the Spill Prevention Control and Countermeasure Plan (SPCC) and/or Oil Spill Response Plans (OSRP). The Incident Commander (IC) must also be familiar with the operation of the Incident Command System (ICS) and the Unified Command Structure (UCS). SAFETY OFFICER (REQUIRED) The Safety Officer is responsible for assessing and monitoring hazardous and unsafe situations at the Emergency Event site(s). The Safety Officer must enforce measures that assure the safety of the public and response personnel. PUBLIC INFORMATION OFFICER (PIO) The Public Information Officer (PIO) provides critical contact between the media/public and the emergency responders. The PIO is responsible for developing and releasing information about the incident to the news media, incident personnel, appropriate agencies and the public. When the response is multi -jurisdictional (involves the federal and state agencies), the PIO must coordinate gathering and releasing information with these agencies. LIAISON OFFICER If a Unified Command Structure is not established, a Liaison Officer is appointed as the point of contact for personnel assigned to the incident from assisting or cooperating agencies. OPERATIONS SECTION CHIEF The Operations Section Chief is responsible for the management of all operations applicable to the field response and site restoration activities. Operations directs field activities based on the Assessment/Action Plan STAGING GROUP LEADER The Staging Group Leader is responsible for managing all activities within the staging area(s). The Staging Group Leader will collect, organize, and allocate resources to the various response locations as directed by the Operations Section Chief. REPAIR GROUP LEADER The Repair Group Leader is responsible for supervising repairs. CONTAINMENT GROUP LEADER The Containment Group Leader is responsible for supervising the containment and recovery of spilled product and contaminated environmental media on land and on water. 10.00.70.02 Revision 01 Page 11 of 15 Effective Date 12/14/2017 Williams. Integrated Management System Operating Requirements 0 Rocky Mountain Midstream Emergency Response Plan PLANNING SECTION CHIEF The Planning Section Chief is responsible for collecting, evaluating, and disseminating information related to the current and future activities of the response effort. The Planning Section Chief must understand the current situation; reasonably predict the future course of events; reasonably predict future resource needs; and assist in development of cleanup strategies. The Planning Section Chief must coordinate activities with the Incident Commander (IC) and other Section Chiefs to ensure that current and future needs are appropriately handled. ENVIRONMENTAL GROUP LEADER The Environmental Group Leader is responsible for ensuring that all areas impacted by a release are identified and cleaned up in accordance with Company and regulatory standards. The Environmental Group Leader supports Planning and Operations to minimize and document the environmental impact of the release. The Environmental Group Leader must plan for future site considerations such as long-term remediation and alternative response strategies in unusually sensitive areas. In a Unified Command Structure (UCS), representatives from the federal and state responding agencies will be included in this group. SITUATION GROUP LEADER. The Situation Group Leader is responsible for the collection, evaluation, display, and dissemination of all information related to the Emergency Response effort. The Situation Group Leader must establish and maintain communications with all portions of the Incident Command and the response site in order to collect the information. The Situation Group Leader also attempts to predict spill movement/migration and identifies areas that may be impacted by the Emergency Event. LOGISTICS SECTION CHIEF The Logistics Section Chief is responsible for procuring facilities, services and material in support of the Emergency Response effort. COMMUNICATIONS GROUP LEADER. The Communications Group Leader is responsible for ensuring that the Incident Command and emergency responders have reliable and effective means of communication. This may involve activation of multiple types of communications equipment and coordination among multiple responding agencies and contractors. SECURITY/MEDICAL GROUP LEADER The Security/Medical Group Leader is responsible for developing a plan to deal with medical emergencies, obtaining medical aid and transportation for Emergency Response personnel, and preparation of reports and records. SUPPLY/GROUND SUPPORT GROUP LEADER The Supply/Ground Support Group Leader is responsible for procurement and the disposition of personnel, equipment and supplies; receiving and storing all supplies for the incident; maintaining an inventory of supplies; and servicing non -expendable supplies and equipment. The Supply/Ground Support Group Leader supports the following: transportation of personnel; supplies, food, equipment; and fueling, service, maintenance and repair of vehicles and equipment. FINANCE SECTION CHIEF The Finance Section Chief is responsible for accounting, legal, right-of-way and risk management functions that support the Emergency Response effort. In this role, the primary responsibility is supporting the Command Staff and Logistics Section matters pertaining to expenses during and following the Emergency Response. The Finance Section Chief will ensure that the cost tracking and reporting process for reimbursable and non -reimbursable insurance -related cost accounting is followed. ACCOUNTING GROUP LEADER The Accounting Group Leader is responsible for identifying and dispensing funding during an Emergency Response. All charges directly attributed to the incident should be accounted for in the proper charge areas. CLAIMS GROUP LEADER The Claims Group Leader is responsible for managing all risk management and right-of-way issues during and following an Emergency Response. It is important that all claims are investigated and handled expediently. LEGAL GROUP LEADER The Legal Group Leader is responsible for advising the Incident Command Staff and Section Chiefs on all matters of Legal relevance. 10.00.70.02 Revision 01 Page 12 of 15 Effective Date 12/14/2017 Williams.; '� Integrated Management System evision History Operating Requirements 0 Rocky Mountain Midstream Emergency Response Plan Rev Date Rev # Request # Section # Description 12/14/2017 00 N/A N/A SIP port to WI MS. 1/3/19 01 N/A N/A New document A ae t. for Rocky Mountain Midstream System Integrity Plan Change Log Date Change Location Brief Description of Change Page Added 063 and footnote address 1 as a reminder necessary portions to refer of such. to 6.64 -ADM - Title 2.1 Added footnote 2 to clarify sequence of events. Added "if this covers a DOT jurisdictional pipeline ERP operated by Pipeline Control, you must list actions to be taken by Pipeline Controllers during an emergency." Revised original to read "If this ERP does not cover a DOT pipeline operated by Pipeline control; jurisdictional 06-14-11 3.2.11 list your the steps site site -s -specific to ecific accomplish procedures." 3.2.1 or refer to and link to (Rev. 6) These revisions were made to clarify/require Pipeline Controllers' actions be entered here for those DOT Jurisdictional assets which they control. (Ref. 49 CFR 192.631(f)(2), 195.446(f)(2), 192.631(b)(3) and 195.446(b)(3)). 3.6.1 Changed the references, links and phone number from 3.7.1 3E Online MSDS to the new provider, MSDS Online. Attachment B Headers and Footers Updated revision number. 09/18/11 Document Updated links. SIP Feedback # 7312363 22 12 61steps 3.5.2 Revised to to add refine the more Hot detailed (red)zone information and regarding the criteria the for (Rev. 7) Warm (yellow) zones. Implementation 3rd Quarter 2012 10.00.70.02 Revision 01 Page 13 of 15 Effective Date 12/14/2017 Williams.; '� Integrated Management System Operating Requirements 0 Rocky Mountain Midstream Emergency Response Plan Date Change Location Brief Description of Change (Rev Added in section 3.2 to ensure all covered tasks are to cr 490 3.2 be emergencies. performed by qualified individuals even during 11/17/16 (Rev CR 1002 } Throu g hout Updated Program g to documents be consistent Implemented � with the Incident 11/17/2016 Management 2/22/2017 (Rev 10) 2.13 Added new step: Notify Pipeline Control (boo -635-7400). CR 1253 3/24/2017 Updated step to clarify only individuals that have been (Rev 11) 4.5.2 properly provide First trained and Aid and have CPR. demonstrated capability can 10.00.70.02 Revision 01 Page 14 of 15 Effective Date 12/14/2017 Williams.; '� Integrated Management System Operating Requirements 0 Submittal Goversheet Guide Submittal Coversheet Guide Document Titles and Numbers (Numbers to be assigned by WIMS Team) 10.00.70.02 — Midstream tream Emergency Response Plan Template SIP Documents to be Replaced/Archived (Indicate if any SIP feedback requests are being addressed) 12.01 -ADM -002 - Emergency Response Plan Template 10.00.70.02 Revision 01 Page 15 of 15 Effective Date 12/14/2017 Rocky Mountain Unoccupied Compression/Treat' Stakeholder Communication Midstream, LLC ng Station Plan Nl $I:II:arns. ' '�.'"� 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 m Willi s. ---a 'e or Document #: Revision #: Li 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 emails 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 .0 Methods of Communication • The Company will maintain an email address to facilitate the communication of useful and timely information. • The email address is CSStakeholders williams.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. 2.0 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 m Willi s. ---a 'e or Document #: Revision #: Li 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: Date and time of emergency response c� 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 o Obscene imagery or images Inappropriate file attachments suspicious links Page 4 of 5 --C---71 Wi!I:ai'ns. 'e Document #: Revision i#: Li Revision Date: 11/15/2018 Document Name: Stakeholder Communication Plan Location: Rocky Mountain Midstream Compressor Station (unoccupied} Document Management Log AUTHORS document was prepared by: This Name Matthew C. Norton HSE Compliance Supervisor Title Asset Phone Email VERSION HISTORY/ CHANGE LOO REVISION RECORD APPROVAL SIGNATURES Version Date Version No. Description of Change p I Remarks Revising Name of Party Approver Signature PP draft Initial Draft and Review N/A N/A Incorporate application final edits O71O412O18 1.O M Norton submittal for • Afik 11/15/2018 1.1 Ownership, formatting updates. position titles, header J Kinnin �', e. 4 ,� 4 - Page 5 of 5 Hello