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Home My WebLink About20173442.tiffUSE BY SPECIAL REVIEW (USR) APPLICATION DEPARTMENT OF PLANNING SERVICES * 1555 N. 17TH AVENUE * GREELEY, CO 80631 wvvw.weldgov.com * 970-353-6100 EXT 3540 * FAX 970-3046498 FOR PLANNING DEPARTMENT USE: AMOUNT $ APPLICATION RECEIVED BY DATE RECEIVED: CASE # ASSIGNED: PLANNER ASSIGNED: Parcel Number*: 1 0 4 9 Address of site: 2 8 1 0 0 _0 0'I Legal Description: 5900 ALL 28 4 62 Zone District: A Acreage: 640 FEE OWNER(S) OF THE PROPERTY: Name: Section: 28 (*A 12 digit number on Tax I.D. information, obtainable at w w w .w eldgov. corn) . Township: 4 N Range: 62 W Floodplain:OY : N Geological Hazard:OYON Airport Overlay:OY ON Company: Phone #: Equus Farms, Inc. 303-885-5122 Street Address: 555 17th Street, Suite 2400 Email: gill.Miller@sec-dertver.corn City/State/Zip Code: Denver, CO 80202 Name: Company: Phone #: Street Address: City/State/Zip Code: Name: Email: Company: Phone #: Street Address: City/State/Zip Code: Email: APPLICANT OR AUTHORIZED Name: Doug Dennison AGENT: (See below- Authorization must accorrpany all applications signed ►byAuthorizedAgents) Company: Bill Barrett Corporation Phone #: 970-353-0407 x5015 Street Address: 331051 NCR 33 Email: ddennison@billbarrettcorp.com City/State/Zip Code: Greeley, CO 80631 PROPOSED USE: Construction and operation of a compressor station related to oil and gas production 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 m ustsign this . pplication. If an Authorized Agent signs, a letter of authorization from all fee owners must be included with the applicatio r. carp ion is the fee owner, notarized evidence must be included indicating that the signatory has to legal autho ' o i for e cor tion. Sig nison Print Name el /t9 ner or Authorized Agent Date Signature: Owner or Authorized Agent Date Print Name Rev 412015 DEPARTMENT OF PLANNING SERVICES 1555 N 17th AVE GREELEY, CO 80631 PHONE (970) 353-6100, Ext. 3540 FAX: (970) 304-6498 AUTHORIZATION FORM Doug Dennison (Bill Barrett Corporation) represent Equus Farms, Inc, -- ._............................ for the property (Agent/Applicant) located at Parcel # 104928100001 (Owner) LEGAL DESCRIPTION: SEC 28 TVVN 4N RNG 62W SUBDIVISION NAME: LOT ELK I can be contacted at the foLlowing i n g Home 970-270-2853 Work 970-353-0407 x6015 Email: ddennison©billbarrettcorp.com The property owner can be contacted at the following Home 303-885-5122 Work 303-299-1330 Email. Bill.Miller@aec-denver.cort Correspondence emaifed to: (Check one) DATE Stast2 -17 OWNER'S SIGNATURE x Agent/Applicant Property Owner USE BY SPECIAL REVIEW QUESTIONNAIRE Proposed Construction of BBC's Lost Creek Compressor Station Facility NW/4, Sec. 28, 4N -62W of the 6th Principal Meridian Weld County, CO May31,2017 Applicant: Bill Barrett Corporation 1099 18th Street, Suite 2300 Denver, CO 80202 Bill Barrett Corporation Bill Barrett Corporation Table of Contents Vicinity Map Section 1 1. Proposed Use of Property 2. Consistency with the intent of the Comprehensive Plan 3. Consistency with the intent of the Zoning and Zone District 4. Type of Uses Surrounding the Site 5. Pla ning Questions a. Hours of operation b. Number of people using the site c. Lot surface description d. Parking e. Landscaping f. Fencing g• Screening h. Reclamation 1. Fire protection j. Improvements 6. Engineering Questions a. Kind of vehicles (type, size, weight) and how often b. Travel routes c. Drainage design 7. Environmental Health Questions a. Drinking water b. Sewage disposal c. Storage d. Waste management e. Air emissions f. Nuisance management 8. Building Questions a. Proposed structures and uses Bill Barrett Corporation Table of Contents Continued Section 2 1. otificatio n Requirements 2. Operational Standards 3. Required Permits 4. Traffic 5. Fire and Emergency ! esponse 6. Spill Prevention, Control and Countermeasure 7. Noise Abatement Plan 71., WELD COUNTY gin ONLINE MAPPING IN BILL BARRETT CORPORATION LOST CREEK COMPRESSOR STATION 4,576.5 Feet DRIVING DIRECTIONS - PROCEED IN A SOUTHEASTERLY DIRECTION FROM KERSEY, COLORADO ALONG HIGHWAY 34 APPROXIMATELY 13.1 MILES TO THE JUNCTION OF THIS ROAD AND AN EXISTING ROAD TO THE SOUTH; TURN RIGHT AND PROCEED IN A SOUTHERLY, THEN SOUTHEASTERLY, THEN SOUTHERLY DIRECTIONAPPROXIMATELY 1.8 MILES TO THE BEGINNING OF THE PROPOSED ACCESS ROAD TO THE SOUTHWEST; FOLLOW ROAD FLAGS IN AN EASTERLYDIRECTION APPROXIMATELY 38' TO THE PROPOSED LOCATION. TOTAL DISTANCE FROM KERSEY, COLORADO TO THE PROPOSED LOCATION IS APPROXIMATELY 14.9 MILES. 4576.5 WC S_1984_Web_M ercator_Auxil is ry_Sp here © Weld County Colorado 0 2,288.25 II i� This map is a user generated static output from an Internet mapping site and is for reverence only. Data layers that appear on this map may or may not be accurate, currea or otherwise reliable. THIS MAP IS NOT TO BE USED FOR NAVIGATION Legend r4 • • L -J Parcels Airport Overlay Airport Critical Flight Zone Airport Noise Contours Fault Lines Mine Extent Floodplain - Labels Floodplain - 100 Year Zone A Floodplain - 100 Year Floodwa Floodplain - 100 Year Zone AE Access Permits Weld County Maintained Road Highway Road Road Highway Township / Range Section County Boundary Existing Private Road (Access) Proposed Compressor Station Notes Section 1 1. Proposed Use of Property Bill Barrett Corporation (BBC) is proposing to construct a compressor station in the Agriculture (A) zone district. This station will be located on property owned by Equus Farms, Inc. and BBC has an agreement with Equus Farms regarding the location, construction and operation of the station. This station will be permitted for a total of 3 natural-gas powered. compressors. A building will be constructed to enclose the area needed for the 3 compressors. • addition, associated equipment such as control room building and meters will be installed at each station. The station will be fenced to keep livestock out and will be equipped with lights that can be controlled so that they are only on when personnel are present during night-time hours. This station is being built immediately adjacent to a proposed well pad in order to be able to limit the overall surface disturbance and co -locate tanks and other facilities that iwill support the compressor station on the well pad. This station, the Lost Creek Compressor Station, will provide gas lift injection and additional boost compression needed to transport gas that is produced by wells in the area to the north to third -party gathering systems. This station will allow BBC to more efficiently develop existing and planned wells in this area. The proposed facility is located in the NW corner of Section 28, Township 4N, Range 62W (see vicinity map). Ownership Information As seen on Assessor Record: Equus Farms, Inc. 555 17th Street Suite 2400 Denver, CO 80202 BBC Contact: Doug Dennison Bill Barrett Corporation 33105 WCR 33 Greeley, CO 80631 Consistency with the Intent of the Comprehensive Plan BBC has reviewed the Comprehensive Plan as outlined in Chapter 22 of the Weld County Code and believes this project is consistent with its guiding principles. Section 22-2- 10(D) emphasizes extraction of natural resources as an important part of the economy and should minimize impacts to agricultural lands. The proposed 5.5 -acre facility will be located on lands leased by BBC that are currently non -irrigated rangeland that is located in a rural area with existing oil and gas activity. The placement and size of the facility will allow for the current agricultural use to persist. Consistency with the Intent of the Zoning and Zone District The natural gas compressor station is classified by Weld County as an Oil and Gas Support and Services facility. Section 23-3-40.A.2 of the Weld County Code states that these facilities are uses allowed to be constructed, occupied, operated and maintained in the A (Agricultural) Zone District only upon approval of a Use by Special Review permit in accordance with the requirements and procedures set forth in Article II, Division 4 of Chapter 23, 4. Type of Uses Surrounding the Site The proposed Lost Creek Booster station is surrounded by agricultural properties and is located in an area with existing oil and gas activity. The compression of natural gas is a necessary component of the oil and gas industry. 5. Planning Questions a. Hours of operation The facility will operate 24 hours a day, seven days a week. However, typical access in and out of the facility will occur during daylight hours except during maintenance situations in which the station is not operating at peak efficiency or other situations that could require immediate attention. b. Number of people using the site During the construction phase upwards of 20 personnel could be on site at peak construction. The construction phase is slated to last approximately eight (8) weeks. Upon completion of construction, the Lost Creek Compressor Station will be operated remotely so there will be no full time personnel on site. During the operations phase, the site will be visited by up to two (2) people (pumper, mechanic) each day for maintenance for short periods of time. In addition, at least once a month, for a period of two to three days, the site would be visited by approximately three (3) trucks for a scheduled monthly maintenance. c. Lot surface description All access roads and each compressor site and associated equipment area will be graveled. d. Parking There wwill be sufficient parking at the facility for employee vehicles. This facility will not be open to the public, therefore, no additional parking is proposed. e. Landscaping Due to the remoteness of this site and the fact that it is completely surrounded by private property, no landscaping is required. Any disturbed areas that are not graveled will be revegetated with an appropriate seed mix as specified by the surface owner. f. Fencing The perimeter of the compressor station and the adjacent well pad will be fenced with a minimum 4 -wire barbed wire fence to prevent cattle from entering the facilities. Cattle guards will be placed at all vehicle entrances. g. Screening Due to the remoteness of this site and the fact that it is completely surrounded by private property, no landscaping is required. The exterior of all buildings and all exposed equipment will be painted in a color to match the surroundings. h. Reclamation When this facility is no longer needed in the future, all buildings and equipment will be removed and the location will be graded to match the natural contour of the land. The disturbed area will then be revegetated utilizing a seed mix specified by the surface owner. The location will be periodically monitored by qualified personnel to determine the effectiveness of reclamation efforts and to specify any remedial work needed until such time that the vegetation on this location is approximately 80% of the natural vegetation on adjacent, undisturbed land. i. Fire Protection This facility will be constructed with equipment that will detect conditions where fire or explosion could occur. This equipment includes LEL (lower explosive limit) meters and fire eyes that will be configured so as to immediately and automatically shut the facility down if a dangerous situation is present. Additionally, appropriate fire extinguishers will be installed throughout the facility and BBC personnel will receive regular training on the maintenance and use of the extinguishers. The primary fire response agency for this facility will be the Platte Valley Fire Protection District. Prior to operation of the facility, BBC will provide an emergency response plan to the fire district and conduct a walk-through of the facility with district personnel to familiarize them with the facility. Improvements As noted elsewhere in this application, improvements at this facility will consist of the installation of the compressors, buildings and other associated equipment. Other improvements will include the gravel surfacing of the disturbed area of the facility and fencing the exterior of the facility to prevent livestock from entering the facility. 6. Engineering Questions a. Kind of vehicles and how often Construction Traffic Construction related traffic is expected during the construction phase of the compressor station. Pick-up trucks (3/4 ton) and large trucks (1 to 40 tons) will be utilized during this phase. Pick-up trucks are expected to contribute around eight trips per day. See the table below for detailed information on construction traffic. Type/Size Number Round of Daily Trips Weight. Construction Work 8 % ton rI luck Semi Equipment Delivery Tractor and — 20 total round trips 40 tons each -Trailer Component Delivery Trucks 2 1 ton Delivery Trucks — with trailer 10 total round trips 3 tons Gravel Trucks 20 total round trips 25 tons each Operational Traffic The following vehicle summaries have been used to determine the anticipated -. tia traffic generation numbers: Overall Employees — 2 per shift, one shift - 4 trips • Average Monthly Deliveries/Pickups (pick-up trucks) — 3 monthly (6 trips) • Average Daily Deliveries/Pickups (Semi -trucks) — 0 daily (0 trips) Travel routes The haul route for this location will be limited to south from US Highway 34 at an access point that was permitted by CDOT, as shown on the enclosed figure. No county roads will be used to access this location. As agreed to with the surface owner, BBC is no longer using the access off of WCR 386 for its operations (AP 14-00103). c. Drainage design The facility is located on a relatively flat parcel. All necessary grade work will be performed to prepare the site for its intended use. However, based on the layout of the site, it is not expected that this pad will require a large amount of grading work. The site will be surfaced with gravel. Please see the Drainage Memo included with this application. 7. Environmental Health Questions a. Drinking water No full time personnel are on site. No water source is required for this facility. Employees that use the site will use bottled drinking water. b. Sewage disposal system A sewage disposal system is not required. A portable toilet will be located on site and serviced at regular intervals. c. Storage There will be no outside storage of materials at the facility. Storage of smaller parts and equipment will take place within the control building. d. Waste management BBC maintains a corporate Waste Management. Plan that covers the management of wastes typically associated with our operations. This plan is used to determine how to best manage common wastes. The objective of the plan is to ensure that generation of wastes is minimized and materials are reused or recycled whenever possible. When that is not possible the plan is utilized to ensure that wastes are managed in accordance with all Local, State, and Federal regulations. BBC personnel are trained on waste management practices. BBC anticipates that the following wastes will be generated at the site: • • • • • • • Used oil Used antifreeze (ethylene glycol) Tank bottoms Spent filters Light bulbs Spent batteries Rags and absorbent socks and pads Hydrocarbon impacted oil from minor leaks and vehicle traffic Used packaging material, including cardboard, scrap lumber from crates, metal strapping, etc. A small dumpster will be placed on site and municipal solid waste will be managed by Redi Services, LLC or Waste Management • corporated. The dumpster will be emptied weekly or bi-weekly. A RCRA Universal Waste program will be set up and managed by Clean Harbors Incorporated for the proper management or recycling of universal wastes such as spent batteries and light bulbs. Used oil, antifreeze, filters, and rags and pads will be managed by either January Environmental Services Incorporated or Tri-State Oil Reclaimers. When necessary, tank bottoms will be removed and sent to an authorized disposal facility. This activity will be coordinated by Clean Harbors Incorporated. In addition, Redi Services, LLC or Reck Flyers will provide portable toilet service on location. Spills and releases will be managed in accordance with the facilities SPCC Plan and BBC's Emergency Response Plan. Hydrocarbon impacted soils will be removed from the facility as needed and disposed of at Waste Management Incorporated's landfill in Ault, Colorado. In the event a change in contractors is necessary in the management or disposal of waste, a state authorized provider would be utilized. e. Air emissions This facility will be permitted through and subject to the regulations promulgated by the Colorado Department of Public Health and Environment (CDPHE), f. Nuisance management During the construction phase of the project, BBC will use water or magnesium chloride trucks for dust suppression. Soil erosion will be mitigated through the appropriate use of best management practices contained within BBC's Storm Water Management Plan. After construction is completed, BBC will gravel the access and the compressor pad location and water or magnesium chloride application will be applied on an as -needed basis. 8. Building Questions a. Proposed structures Phase I • (3) Waukesha 7044 compressors (or equivalent) (1) 120' x 60' metal building to house compressors (1) App. 10' x 20' metal control building • (4) Flare stacks (3" x 30') • (?) Pig launchers (?) Pig receivers • (1) Inlet slug catcher (1) Suction filter coalescer • (2) Discharge filter coalescers • (1) Fuel gas scrubber All necessary building permits will be obtained from Weld County prior to initiating construction. There are no existing structures at this location. Construction of the compressor pad is anticipated to commence upon the approval of this USR. The total construction time is expected to be eight (8) weeks. SECTION 2 1. Notification Requirements County Notices: Section 23-2-210(B)(1): Upon application completeness, agency notice submittal (28 day comment period). This step is completed by Weld County staff. Section 23-2-210(B)(6), a sign shall be posted by the County on this proposed site. This step is completed by Weld County staff. Section 23-2-210(B)(4): Notice to owners of property within 500 feet of the parcel. As per 23-2-260(B)(9), the list attached was created from Assessor records of Weld County on November 22, 2013. Operational Standards NoiseControl: The operation of the facility shall comply with the noise standards enumerated in Section 25-12-101, C.R.S. The facility will adhere to all applicable COGCC noise regulations. Air and Water S ualit : All activities will be in compliance with the permit and control provisions of the Colorado Air Quality Control Program, Title 25, Article 7, and C,1,S, as applicable. No waste water will be discharged on the surface of the site. Human wastes will be contained to the portable toilet on site. Lighting: Lighting on the site will be downcast and shielded lighting will be provided on the proposed building. Lighting is for nighttime security and emergency work only. Lighting will be on a timer and motion detection. At its closest point, the location of the compressor station is approximately 0.8 miles from US 34. In addition, the nearest occupied residence to the compressor station is over 1 mile to the north. Therefore, it is not anticipated that lighting will pose any nuisance to traffic on public roadways or adjacent properties. WeedControl: The facility will be kept free of weeds, rubbish, and other waste material. The area shall be treated if necessary and as practicable to prevent invasion of undesirable species and noxious weeds. Required Permits Weld County: A Use by Special Review Permit requires approval by the Board of County Commissioners. Weld County Right -of -Way Use Permits will be obtained for any new pipelines connected to this facility that fall within a County ROW. A grading permit is expected to be required. Platte Valley Fire Protection District: The Site Plan and Use by Special Review Application will be referred to and reviewed by the Platte Valley Fire Protection District. Oversize Load Permits: If necessary, oversize load permits will be obtained prior to moving any new equipment onto the site. BBC will submit any additional permits necessary for county approval prior to the commencement of construction. Traffic Because no county roads will be used to access this facility, the Weld County Public Works Department waived the requirement for a traffic memo. 5. Fire and Emergency Response There is adequate provision for the protection of the health, safety and welfare of the inhabitants of the neighborhood and the county. All roads leading to and those in the site area are designed and maintained to support fire apparatus. Sufficient turnaround room to accommodate fire apparatus is present. All storage tanks will be permanently mounted with foam nozzles according to API (American Petroleum Institute) standards. BBC support personnel in the field are on call at all times to provide technical assistance in fire prevention and suppression. Emergency Information General Information: The purpose of this document is to provide ownership information in case of an emergency at the proposed Lost Creek Compressor Station. It may be used by outside agencies, company employees, and contract labor to help secure a safe and swift recovery from such emergency situations: a. Name and Address Corporate Office Bill Barrett. Corporation 1099 18th Street, Suite 2300 Denver, CO 80202 (303) 293-9100 Regional Office - DJ Operations Bill Barrett Corporation 33105 WCR 33 Greeley, CO 80631 (970) 353-0407 b. Type of Facility: Compressor station c. Location and Access: Located in the Northwest quarter of Section 28, Township 4 North, Range 62 West. Driving directions to the location are as follows — PROCEED IN A SOUTHEASTERLY DIRECTION FROM MERSEY, COLORADO ALONG HIGHWAY 34 APPROXIMATELY 13,1 MILES TO THE JUNCTION OF THIS ROAD AND AN EXISTING ROAD TO THE SOUTH; TURN RIGHT AND PROCEEDIN A SOUTHERLY, THEN SOUTHEASTERLY, THEN SOUTHERLY DIRECTION APPROXIMATELY 1.8 MILES TO THE BEGINNING OF THE PROPOSED ACCESS ROAD TO THE SOUTHWEST; FOLLOW ROAD FLAGS IN AN EASTERLY DIRECTION APPROXIMATELY 38' TO THE PROPOSED LOCATION. TOTAL DISTANCE FROM MERSEY, COLORADO TO THE PROPOSED LOCATION IS APPROXIMATELY 14.9 MILES. Emergency Contact List: The following is a list of Bill Barrett Corporation personnel and organizations that may be contacted in the event an emergency occurs at the facility. Contact Office PhoneCell Phone Brett Paben — Production Superintendent Dustin Watt — EIS Coordinator 24 -Hour Emergency Number 6. Containment/SP CC Plan 970-353-0407 x6003 970-353-0407 x6005 1-800-880-6359 970-319-4690 303-656-1838 If required, an SPCC plan will be created for the facility prior to commencing operations. It is BBC's policy to create and maintain SPCC plans at all of its non -transportation related facilities in accordance with 40 CFR Section 11. Upon completion of the SPCC plan, a signed copy will be provided, per the request of Weld County. Noise Abatement Plan At the current time, no additional noise abatement is anticipated to be needed. There are no occupied structures within at least 1 mile of the location, and the location is surrounded by undeveloped grazing land. From: To: Cc: Subject: Date: Attachments: Janet Lundquist Doug Dennison; Michelle Martin Evan Pinkham RE: PRE 17-0036 & PRE17-0037 Friday, May 12, 2017 9:09:06 AM image003.pnq irnage005.png Hi Doug, I hope you are doing well. It looks like you guys are proposing 2-3 vehicles per day and 4-5 semis per month. Based upon those volumes, I will waive the Traffic Study requirement for the Weld County. However, since it sounds like you will be accessing off of the state system onto a private road. You may want to ensure that CDOT is not going to require a revised access permit. At times if a revised CDOT access permit is required CDOT may require a Traffic Study. Let me know if you have any additional questions. Thanks, Janet Lundquist Support Services Manager Weld County Public Works Dept. P.O. Box 758, Greeley, CO 80632 Tele-970.356.4000 ext 3726 Fax- 970.304.6497 Confidentiality Notice: This electronic transmission and any attached documents or other writings are intended only for the person or entity to which it is addressed and may contain information that is privileged, confidential or otherwise protected from disclosure. if you have received this communication in error, please immediately notify sender by return e-mail and destroy the communication. Any disclosure, copying, distribution or the taking of any action concerning the contents of this communication or any attachments by anyone other than the named recipient is strictly prohibited. From: Doug Dennison [maifto:ddennison@billbarrettcorp.com] Sent: Thursday, May 11., 2017 2:03 PM To: Michelle Martin <mmartin@co.weld.co.us> Cc: Janet Lundquist <jlundquistco.weld.co.us> Evan Pinkham <epinkham@co.weld.co.us> Subject: Re: PRE 17-0036 & PRE17-0037 Perfect. Janet/Evan - please let me know if you have questions. Thanks. Doug Dennison Bill Barrett Corporation 970-270-2853 ddennison@hillbarrettcorp.com Get Outlook for iOS From: Michelle Martin <mmartin@co.weld.co.us> Sent: Thursday, May 11, 2017 1:58:45 PM To: Doug Dennison Cc: Janet Lundquist; Evan Pinkham Subject: RE: PRE 17-0036 & PRE17-0037 Hi Doug, Thank you for your email. I have copied public works on the email to get their thoughts on if a traffic study would be required. Michelle Martin Planning Manager 1555 N 17th Ave Greeley, CO 80631 mmartineco.weld.co.us PHONE: (970) 400-3571 FAX: (970) 304-6498 Confidentiality Notice: This electronic transmission and any attached documents or other writings are intended only for the person or entity to which it is addressed and may contain information that is privileged, confidential or otherwise protected from disclosure. If you have received this communication in error, please immediately notify sender by return e-mail and destroy the communication. Any disclosure, copying, distribution or the taking of any action concerning the contents of this communication or any attachments by anyone other than the named recipient is strictly prohibited. From: Doug Dennison[mailto:ddennisonebillbarrettcorp.com] Sent: Wednesday, May 10, 2017 1:38 PM To: Michelle Martin <mmartincco.weld.co.us> Subject: FW: PRE 17-0036 & PRE17-0037 Michelle, In Chris' absence, do you think you might be able to help answer my question below? Thanks. Doug Dennison Environmental -Governmental Affairs Liaison 33105 WCR 33 Greeley, CO 80631 Direct: 970-353-0407x6015 Cell: 970-270-2853 Email: ddennison@billbarrettcorp.com B 11 Barrett Corporation Tournament f Hope to benefit 0 , 4, A Join us for the 8th Annual Tournament of Hope on July 28, 2017 Click Here for Details From: Doug Dennison Sent: Wednesday/ May 10, 2017 1:37 PM To: 'cgathman@co.weld.co.us' Subject: PRE 17-0036 & PRE17-0037 Chris, We plan to submit the USRs and SEs that were discussed in the subject pre -application meetings in the near future, and I wanted to confirm the requirements regarding a traffic study for the USR. The application requirements from states that a Traffic Study is required per the pre -application meeting minutes. In the case of the 2 proposed compressor stations, all traffic will access the stations from i US 34 via a private road — no county roads will be utilized to access the location. Due to this and the fact that the pre -app minutes do not state that a Traffic Study is required, I am assuming that no study is needed but wanted to confirm my assumption before finalizing the application. Thanks. Doug Dennison Environmental -Governmental Affairs Liaison 33105 WCR 33 Greeley, CO 80631 Direct: 970-353-0407x6015 Cell: 970-270-2853 Email: ddennison@billbarrettcorp.com B 11 Barrett Corporation Tournament of Hope to benefit el, 0 Join us for the 8t1i Annual Tournament of Hope on July 28, 2017 Click Here for Details itsiNt UINTAH ENGINEERING & LAND SURVEYING Weld County Colorado Department of Planning Services Engineering Division Attn: Hayley Balzano, Engineer 1555 N. 17th Ave. Greeley, CO 80631 85 South 200 East Vernal, Utah 84078 ru 435.789.1017. x: 435.789.1813 www.uintahgroup.com June 22, 2017 Re: Bill Barrett Corporation — AEF 4-62-28_27 NWNW Compressor Pad - Use by Special Review (USR) Drainage Narrative — PRE17®0036 Dear Ms. Balzano, The purpose of this drainage narrative is to describe the process by which an exception to the required detention pond design was determined. Bill Barrett Corporation is planning to construct a compressor pad for (3) new compressors that will be located in Section 28, T4N, R62W, 6th P.M. The new pad will be approximately 3.22 acres. The overall site will be located on a parcel that will be approximately 5.45 Acres. A subdivision exemption plat is being submitted along with the USR permit. The new pad for the compressors will consist of gravel surfacing equaling approximately 2.93 acres, roofs equaling approximately 0.15 acres, cut/fill slopes equaling approximately 0.14 acres, and undeveloped areas of the parcel equaling approximately 2.23 acres. The Rational method was used to compute peak flows for the 1 -hr 100 -year storm event. The storm intensity was obtained from NOAA Atlas 14. The 1 -hour, 100 -year rainfall intensity for the project location is 2.65 in/hr. See Appendix A for NOAA Atlas 14 Rainfall Intensities for the project location. Using the Standard Form Rational Method spreadsheets (included in Appendix B), the calculated total project storm water runoff for the 1 -hour, 100-yearm storm event equals 8.5 cfs. Therefore, this site will not require a storm water detention pond design in accordance with Weld County Code Section 23-12-30.F.1.a.10 which states, "NON -URBANIZING areas where the total project storm water runoff of less than, or equal to, 10 cfs for the 1 -hour, 100 -year, storm event". See Appendix B for the supporting spreadsheet calculations. Currently storm water flows in a north -northeasterly direction across the site. Storm water from the compressor pad will flow in a northerly direction across the site, following the same drainage pattern that currently exists, and discharge into the historic drainage path. See Appendix C for a drainage exhibit. There have been no previous problems with drainage issues at this property or the surrounding properties that we are aware of. In conclusion, the site hydrology and hydraulic conveyances will be able to route the storm water around and through the site and discharge into the historic drainage outfalls. No adverse short term or long term drainage impacts resulting from the construction of the compressor pad site, are anticipated. ' k t+ N y, F I �� G �'�a T LAND S! .FS G G � r� koe �� i� y�y ..t tl f �ygj ;�� 75n .� � �� „cam IA 'af � ' �� 9�,(�,. 1 .. 4wr ��„+�. ?� � ,, UTAH I COLORADO I WYOMING I NORTH DAKOTA I MONTANA I KANSAS I OKLAHOMA I TEXAS I NEW MEXICO UINTAH ENGINEERING & LAND SURVEYING If you have any concerns or comments, please call me at (435) 789-1017. Sincerely, 9 Christopher Clark, PE Project Engineer UELS, LLC 0: (435) 789-1017 cclark@uintahgroup.com enclosures CJC/dgw 85 South 200 East Vernal, Utah 84078 O: 435.789.1017. x: 435.789.1813 www.uintahgroup.com UII1T#.tHhENci & LAND SURVEYING UTAH I COLORADO I WYOMING I NORTH DAKOTA I MONTANA I KANSAS I OKLAHOMA I TEXAS I NEW MEXICO UINTAH ENGINEERING & LAND SURVEYING 85 South 200 East Vernal, Utah 84078 CO: 435.789.1017. 435.789.1813 www.uintahgroup.com Appendix A — NOAA Atlas 14 Rainfall Intensity UINTAHENG1NEE''IING &LA , SURVEYING UTAH I COLORADO I WYOMING I NORTH DAKOTA I MONTANA I KANSAS I OKLAHOMA I TEXAS I NEW MEXICO 5/18/2017 Precipitation Frequency Data Server NOAA Atlas 14, Volume 8, Version 2 Location name: Kersey, Colorado, USA* Latitude: 40.2894°, Longitude: -104.3374° Elevation: 4574.43 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 Bonn in 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 Average recurrence interval (years) 0.252 (0.201-0.318) 0.369 (0.294-0.465) 0.449 0.359-0.568) 0.603 0.481-0.761) 0.890 (0.716-1.11) 0.972 (0.786-1.21) 1.30 12 -hr (1.07-1.59) 24 -hr t 1.54 (1.28-1.86) 4 -day 7 -day 10 -day 20 -day 1.77 (1.48-2.12) 1.94 1.63-2.32) 2.07 (1.75-2.46) 2.36 (2.00-2.78) 2.61 [(2.23-3.05) 10 0.304 0.401 0.492 (0.242-0.384) (0.318-0.508) (0.389-0.626) 0.445 0.587 0.721 (0.355-0.562), (0.466-0.743) (0.569-0.917) 0.542 (0.432-0.686) 0.727 (0.579-0.918) 1.14 (0.923-1.42) 1.32 (1.08-1.63) 1.55 1.27-1.89) 2.25 1.89-2.69) 2.39 (2.01-2.83) 2.72 (2.31-3.20) 0.715 0.568-0.906) 0.958 (0.761-1.21) 1 1.38 1.11-1.73) 1.49 (1.20-1.86) 1.71 (1.39-2.12) 2.00 1.64-2.45) 2.29 (1.89-2.78) 2.62 2.18-3.15) 2.79 2.34-3.34) 2.93 (2.46-3.49) 3.32 (2.81-3.93) 3.01 (2.57-3.53) 3.67 3.12-4.32) 30 -day 45 -day 60 -day 3.36 (2.89-3.90) 3.99 (3.45-4.60) 4.76 (4.14-5.45) 5.39 (4.71-6.16) 3.85 3.31-4.47) 4.64 3.97-5.39) 4.55 (3.93-5.25) 5.44 (4.69-6.29) 0.879 (0.694-1.12) 1.18 0.928-1.50) 1.70 (1.35-2.14) 1.83 (1.46-2.29) 2.10 (1.69-2.60) 2.42 (1.97-2.98) 2.73 (2.24-3.33) 3.09 (2.56-3.74) 3.27 (2.72-3.92) 3.41 (2.85-4.08) 3.84 (3.23-4.56) 4.23 (3.57-4.99) 5.27 (4.49-6.16) 6.15 (5.27-7.15) 5.43 (4.72-6.23) 6.18 (5.39-7.05) 6.48 5.62-7.45) 7.31 (6.30-8.44) 25 0.635 (0.491-0.853) 0.929 (0.719-1.25) 1.13 (0.877-1.52) 1.51 1.17-2.03) 2.21 (1.74-2.97) 2.39 (1.89-3.20) 2.72 (2.16-3.59) 3.07 (2.45-3.98) 3.41 (2.73-4.35) 3.80 (3.06-4.77) 3.98 (3.22-4.96) 4.12 (3.35-5.12) 4.58 (3.73-5.61) 4.99 (4.07-6.06) 6.13 5.03-7.32) 7.10 (5.86-8.42) 8.39 (6.95-9.87) 7.39 (6.43-8.46) 8.33 (7.21-9.58) 9.54 (7.92-11.2) 50 0.758 (0.569-1.02) 1.11 (0.833-1.50) 1.35 1.02-1.83) 100 200 0.892 (0.645-1.23)! 1.31 (0.945-1.80) 1.04 (0.720-1.47) t 1.52 (1.05-2.15) 500 1.25 (0.832-1.81) 1.84 (1.22-2.65) 1.59 (1.15-2.20) 1.86 (1.29-2.62) 2.24 (1.49-3.23) 2.13 (1.54-2.93) . 2.48 (1.71-3.50) 2.98 (1.98-4.31) A d 2.65 3.78 3.11 I (2.51-5.40) t 1.92-3.61) I (2.16-4.40) 2.67 3.18 3.75 4.58 (2.03-3.59) (2.33-4.37) (2.62-5.26) (3.08-6.58) 2.90 (2.22-3.89) 3.27 (2.52-4.34) 3.63 (2.81-4.73) 3.98 (3.10-5.12) 4.37 (3.43-5.55) 4.56 (3.59-5.75) 4.71 (3.72-5.91) 5.16 (4.11-6.40) 5.58 (4.45-6.86) 3.46 2.55-4.74) ` 4.10 2.89-5.73) 3.89 2.89-5.26) 4.58 (3.25-6.33) 4.24 3.16-5.64) 4.90 (3.50-6.68) 4.59 (3.45-6.04) , 5.25 (3.79-7.08) 4.98 (3.77-6.46) 5.63 (4.09-7.49) 5.03 (3.40-7.20) 5.58 (3.81-7.90) 5.85 (4.01-8.16) 6.20 (4.29-8.56) 6.54 (4.56-8.91) 5.17 3.94-6.67) 5.83 (4.25-7.70) 5.32 (4.07-6.83) 5.76 (4.43-7.31) 5.97 4.38-7.86) 6.39 (4.70-8.30) 6.18 (4.76-7.77) 6.78 5.01-8.75) 6.77 (5.44-8.21) 7.80 (6.30-9.38) 9.17 (7.44-11.0) 10.4 (8.46-12.3) 7.39 (5.74-9.17) 8.01 5.97-10.2) 8.47 (6.61-10.4 9.12 6.83-11.5) 9.91 (7.77-12.1) 11.2 (8.80-13.6) 10.6 (7.98-13.3) 6.74 (4.73-9.13) 6.89 (4.85-9.29) 7.23 (5.12-9.65) 7.59 (5.39-10.0) 8.80 (6.31-11.5) 9.94 (7.16-12.9) 11.5 8.30-14.8) 11.9 (9.01-14.9 12.8 (9.31-16.4) 1000 1.43 (0.917-2.07) 2.09 (1.34-3.03) 2.55 (1.64-3.70) 5.27 (3.42-7.57) 5.81 (3.79-8.30) 6.42 (4.22-9.09) 6.62 (4.40-9.28) 6.97 (4.67-9.68) 7.27 (4.92-9.99) 7.47 (5.09-10.2) 7.62 5.21-10.4) 7.89 (5.44-10.7) 8.20 (5.68-11.0) 9.39 (6.57-12.5) 10.5 (7.42-13.9) 12.1 (8.54-15.9) 13.4 (9.54-17.6) 1 Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS). Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates (for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds are not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values. Please refer to NOAA Atlas 14 document for more information. Back to Top http://hdsc.nws.noaa.gov/hdsc/pfds/pfds printpage.html?lat=40.2894&lon=-104.3374&data=depth&units=english&series=pds 1/4 5/18/2017 Precipitation Frequency Data Server PF graphical PDS-based depth -duration -frequency (DDF) curves Latitude: 40.2894', Longitude: -1.04.3374° Precipitation depth (in) Precipitation depth 5 10 NOAA Atlas 14, Volume 8, Version 2 25 50 100 200 500 1000 Average recurrence interval (years) Created (GMT): Thu May 18 16:38:09 2017 Back to Top Maps & aerials Small scale terrain Average recurrence interval (years) (17 ..3 10 25 — 50 jJ�� 100 200 500 — 1000 6,41441401.041 Duration I 0 -min i 5`mm� 0 --min 60 -min 2 -hr 3 -hr 6 -hr 12 -hr 24-h r 2 -day -day ,. ..n. 4 -day RN —.7 -day I 0 -day 20 -day 30 -day 45 -day 60 -clay http://hdsc.nws.noaa.gov/hdsc/pfds/pfds_pri ntpage.htm I?I at=40.2894&l on=-104.3374&data= depth&units=engl i sh&series= pds 2/4 5/18/2017 Precipitation Frequency Data Server 3km 6 L„,i,essia 1 i i Large scale terrain SF. a.pO car isia "or raw O 9tr• eb itinns -- Scuicipr .. A. , . •a • c •a,p• X • Pe s S Cheyenne • Greeley NI MOM • Longmont 100km 1I 60mi ►enver U N T Large scale map Cheyenn _ o,G , (4:7-1- Fort 'C or i ri s eGrer ■� Longmont ..Boulder 100km 6 rn i Large scale aerial .9 :.-..,4 http://hdsc.nws.noaa.gov/hdsc/pfds/pfds jri ntpage.htm I?lat=40.2894&Ion=-104.3374&data=depth&units=engl ish&series= pds 3/4 5/18/2017 Precipitation Frequency Data Server 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.Questionsna noaa.gov Disclaimer http://hdsc.nws.noaa.gov/hdsc/pfds/pfdsjrintpage.html?Iat=40.2894&Ion=-104.3374&data=depth&units=english&series=pds 4/4 UINTAH ENGINEERING & LAND SURVEYING 85 South 200 East Vernal, Utah 84078 o: 435.789.1017. x: 435.789.1813 www.uintahgroup.com Appendix B — Rational Method Worksheets UINTAHE1GwNEEFnNG & L. { UVEYING UTAH I COLORADO I WYOMING I NORTH DAKOTA I MONTANA I KANSAS I OKLAHOMA I TEXAS I NEW MEXICO b UINTAH I .fll- . ;-U-.'t '-`1r; :'. ' % t-i- Weld County Engineering &• Construction Criteria "!'able 5-3 Recommended Percentage Imperviousness Values U/)b('U Vol l - Table 6-3 Recommended Percentage Imperviousness Values % Impervious WEIGHTED IMPERVIOUS SURFACE CALCULATIONS Undeveloped Areas Streets Developed Areas MISC. Historic Flow Analysis Greenbelts, Agricultural Off -site flow analysis (Land Use Not Defined) Paved Gravel Recycled Asphalts Concrete Driveways Sidewalks Roofs Single -Family Res. 0.7.5-2.5 Acres Parks Playgrounds Berms/ Cut/Fill Slopes/ Landscaping 2% 2% 45% 100% 40% _ 75% 90% 90% 90% 20% 10% 25% 2% 6/22/2017 Basin Area (Ac) Area (Ac) Area (Ac) Area (Ac) Area (Ac) Area (Ac) Area (Ac) Area (Ac) Area (Ac) Area (Ac) Area (Ac) Area (Ac) Area (Ac) Total Area (Ac) Percent Imperv. SE + Improvements 2.23 2.93 0.15 0.14 5.45 24.83% 0.00 0.00% 0.00 0.00% 0.00 0.00% 0.00 0.00% 0.00 0.00% 0.00 0.00% Total: 5.45 USDCM Vol 1 - Section 6.0 Runoff Page 1 E UINTAH C-NG:iNizc,RING a LAND SU: C:YINO WEIGHTED RUNOFF COEFFICIENT VERSUS WATERSHED IMPERVIOUSNESS METHOD AS DETAILED IN URBAN STORM DRAINAGE CRITERIA MANUAL VOL. 1 (COLORADO) CA=KA+ (1.31i3- 1.44/2+ 1.1351 - 0.12) for CA > or = 0, otherwise CA =0 C,3 = (CA + Cci3)/2 Cci) = Kr)) ± (0.858i 3 - 0.78612 + 0.774i + 0.04) i = % imperviousness/100 expressed as a decimal KA = Correction factor for Type A soils Kul) = Correction factor for Type C and Type D soils (RO-6) (RO-7) Correction Factors, KA & Ke,3 Soil Type Storm Return Period 2 -Year 5 -Year A C or D 10-Yr 0.00 -0.08i + 0.09 - 0.14i + 0.17 0.00 -0.10i + 0.11 - 0.18i + 0.21 6/22/2017 Basin ID % Imperv. i Soil Type Correction Factors, KA & Kul) Runoff Coefficients, C Basin Area (Ac) Total Area (Ac) Weighted Runoff Coefficients, C 5 -Year 10 -Year 100 -Year 2 -Year 5 -Year 10 -Year 100 -Year 2 -Year 5 -Year 10 -Year 100 -Year A 0.07 0.14 0.26 0.09 0.16 0.23 0.35 5.45 SE + Improvements 24.83% 0.25 B - - - 0.15 0.22 0.30 0.46 0.00 5.45 0.09 0.16 0.23 0.35 C or D 0.09 0.17 0.36 0.20 0.28 0.36 0.56 0.00 A 0.09 0.17 0.32 0.00 0.05 0.20 0.00 0.00 0 0.00% 0.00 B - - - 0.02 0.08 0.15 0.35 0.00 0.00 - - - - CorD 0.11 0.21 0.46 0.04 0.15 0.25 0.50 0.00 0.09 0.17 0.32 0.00 A 0.00 0.05 0.20 0.00 0 0.00% 0.00 B - - - 0.02 0.08 0.15 0.35 0.00 0.00 C or D 0.11 0.21 0.46 0.04 0.15 0.25 0.50 0.00 A 0.09 0.17 0.32 0.00 0.05 0.00 0.20 0.00 0 0.00% 0.00 B - - - 0.02 0.08 0.15 0.35 0.00 0.00 CorD 0.11 0.21 0.46 0.04 0.15 0.25 0.50 0.00 0.09 0.17 0.32 0.00 0.05 0.00 A 0.00 0.20 0 0.00% 0.00 B - - - 0.02 0.08 0.15 0.35 0.00 0.00 CorD 0.11 0.21 0.46 0.04 0.15 0.25 0.50 0.00 A 0.09 0.17 0.32 0.00 0.00 0.05 0.00 0.20 0 0.00% 0.00 B - - - 0.02 0.08 0.15 0.35 0.00 0.00 CorD 0.11 0.21 0.46 0.04 0.15 0.25 0.50 0.00 USDCM Vol 1 - Section 6.0 Runoff Page 2 UINTAH ENGINEERING & LAND 'SURVEY ING Design Point 1 2 3 4 5 6 100-Yr RUNOFF - RATIONAL METHOD METHOD AS DETAILED IN URBAN STORM DRAINAGE CRITERIA MANUAL VOL. 1 (COLORADO) i _ 100- Yr Rainfall Depth -Duration -Frequency (1 -hr) = 2.65 in/hr i Design Storm: 100 Year BASIN INFORMATION Drain Basin Area (Ac) Runoff Coeff. DIRECT RUNOFF T(c) I (min) C x A (in/hr) Q (cis) SE + Improvements 5.45 0.35 27.1 1.91 4.41 8.5 0 0.00 - #VALUE! #VALUE! #VALUE! 0 0.00 #VALUE! #VALUE! #VALUE! 0 0.00 #VALUE! #VALUE! #VALUE!:: 0 0.00 #VALUE! #VALUE! #VALUE! 0 0.00 #VALUE! #VALUE! #VALUE! USDCM Vol 1 - Section 6.0 Runoff TOTAL RUNOFF T(c) Sum I Q (min) C x A (in/hr) (cfs) 6/22/2017 REMARKS Page 3 UINTAH ENGINEERING & LAND SURVEYINC DINT Appendix C — Drainage Exhibit 85 South 200 East Vernal, Utah 84078 o: 435.789.1017. x: 435.789.1813 vvww.uintahgroup.com HENGNEEPNG LAND S U ♦R V E ' J ' G UTAH I COLORADO I WYOMING I NORTH DAKOTA I MONTANA I KANSAS I OKLAHOMA I TEXAS I NEW MEXICO (T4N) EXISTING ROAD PROPOSED: COMPRESSOR PAD LEGEND: ENGINEERING & LAND SURVEYING BASIN DESIGNATION UELS, LLC Corporate Office * 85 South 200 East Vernal, UT 84078 * (435) 789-1017 A-1 5.4510.35 SUMMARY RUNOFF TABLE DESIGN POINT BASIN AREA (Ac) PEAK 100-YR (cfs) 1 5.45 8.5 BILL BARRETT CORPORATION N ANSCHUTZ EQUUS FARMS 4-62-28_27 NWNW COMPRESSOR PAD SEC. 28, T4N, R62W, 6th P.M. WELD COUNTY, COLORADO DRAWN BY: B.W.W. DATE DRAWN: 05-23-2017 Hello