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Home My WebLink About20184069.tiffUSE BY SPECIAL REVIEW USR APPLICATION DEPARTMENT OF PLANNING SERVICES * 1555 N. 17TH AVENUE * GREELE ', CO 80631 '.weld ov.corn 44970-400-6100 FAX 970-304-6408 FOR PLANNING DEPARTMENT USE: AMOUNT APPLICATION RECEIVED BY DATE RECEIVED: CASE # ASSIGNED: PLANNER ASSIGNED: Parcel Number: Subdivision Exemption tt -aTDB Address of site: Legal Description: A Parcel located in the SE 114 of Zone District: AGAcreage 2 Floodplain iris: FEE O NER(S OF THE PROPERTY: Name: Cody Kerrigan Company,: Outrigger DJ Operating, LLC Section: 26 (*A 12 digit number on Tax LID. information,�lAy�f�obt�ai(nable at 4'Y'i� �i" 4 ! , R i e ld q o Y . co ni) . Township: 8 N Range: 61 eclogical Hazard: YON Airport Overlay: YON Phone f": 770-361-2551 Email: ckerrigan outriggerenergycorH Street Address: 1200 Seventeenth Street, Suite 900 City/State/Zip Code: Denver, CO 80202 Name: Trent Taylor Company: Outrigger DJ Operating, LLC Phone #: 720-361-2575 Street Address. Email: ttaylor@outriggerriergy.COm 1200 Seventeenth Street, Suite 90O City/State/Zip Code: Denver, CO 80202 Name: Company: Phone #: Street Address: City/State/Zip Code: Email. APPLICANT OR AUTHORIZED AGENT: (See below: Authorization must accompany ail applications signed by Authorized Agents) Name: TammyZirnbefrnan Company: ,ZAP Engineering Phone #: 303-656-4806 Email. zimbelnnant@zapecs.ccrn Street Address: 333 S. Allison Pkwy, suite 100 City/State/Zip Code: Lakewood, Colorado 80226 PROPOSED USE: Gas Compressor Station 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)I'tnowledge. Signatures of all fee owners of property must sign this application. If an Authorized Agent signs, .a letter of authorization from all fee owners must be included with the application.. If a corporation is the fee owner, notarized evidence must be included indicating that the signatory has to legal authority to sign for the corporation. Signature: Owner or Authorized Agent Date Signature: Owner or Authorized Agent Date Cody Kerrigan Tarnmy Zir belma n Print Name Print Name Rev 41 016 DEPARTMENT OF PLANNING AND BUILDING DEPARTMENT OF PUBLIC HEALTH AND ENVIRONNMENT 1555 NORTH in" AVENUE GREELEY, CO 80631 AUTHORIZATION FORM FOR BUILDING, PLANNING AND HEALTH DEPARTMENT PERMITS AND SERVICES i ��,,��' Outrigger DJ Operating, LLC give permission to Tammy Zimbelman (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: North of the intersection of CR 88 / CR 95,: on west side of CR 95 A parcel in SE 1/ T� wn iii f ►� 61 Legal Description: ofSection p Subcfivrsion Name:. " Lot Block P ro erty Owners Information: 72O36ia2551 l_ ckerrigan@outriggerenergy.com ner . core Phone: Esmail: . _ Applicant/.Agent Contact Information: 303-656-4806 - il: zinbeIr ant@zap cs com Phone: E Email correspondence to be sent to: Owner Applicant/Agent Both Applicant/Agent pP�licant/A.. ent Postal service correspondence to be sent to, (choose only one) Owner Additional Info: Owner Signature: Date: 9/0/14 Owner Signature: Date:_ (we), AA*, t1/4P1/4 \,\ (Owner --- please print) DEPARTMENT OF PLANNING AND BUILDING DEPARTMENT OF PUBLIC HEALTH AND ENIVIRONNMENT 1555 NORTH 17TH AVENUE CREELEY,CO 80631 AUTHORIZATION FORM t give permission to 6.0,Aii e•;, (AUthOd Agent m please print) to apply for any Planning, Building or Septic permits on our behalf, for the property located at (address or parcel number) below:. 43 S C. Legal Description: SER •�-sz 1 � 6Lcct\ ovnoocoo 1 Subdivision Name: NVok of Section 24 , Township N, Range k. Property Owners Information: Address: "'I,3 \, _5 Ca Otai,nL Lot Rib„). cts si �r.'L!`L /C4+ Phone: qi - LA t E-mail: Authorized Agent Contact Information: Address: \ IOC \7-, Sin,_ 900 Block lave C Ca) Phone: 72 '! - 2 5 , ► E -Mail: -bof 001/4 e_Acke_11 31/42, Correspondence to be sent to: Owner Authorized Agent Both / by Mail Email \d". Additional Info: Tai -nom , Q s (0 its 0 OiS1/4‘ Ncecock4 tOrto teiskk i &ILL.( s StIA thirvas 41/46 tic = t °c CYC c t\ \AIMS itit 0 tre, X Owner Signature: Ce7eit ,: a - � Date: �- ' `' eqt Owner Signature: Date: STATEMENT OF AUTHORITY (FOR A TRUST OR CORPORATE ENTITY) etc". This Statement of Authority relates to an entity named: Outrigger DJ Operating LLC The type of entity is a Limited Liability Company The entity is formed under the law of Delaware • . (Trust, corporation, (state), The mailing address for the entity is: 1200 17th Street., Suite 900, Denver, Co 80202 The name and position of each person authorized to execute instruments conveying, eneunlbcring; or, otherwise affecting title to real property on behalf or the entity is: Andrew Perdue,_Authhorized Agent. Cody Kerrigan. Authorized Agent Trent Taylor. Authorized Agent This Statement of Authority is executed on behalf of the entity pursuant to the provisions of Colorado Revised Statute Section 38-30-172(2). Executed this day of "'aid STATE OF COUNTYOF 102,41 4 ss. , 20 it Title: The foregoing instrument was acknowledged before nie this, T a 20N b ,6 Witness my hand and official seal. My Commission Expires: i:res: 2.4/ . (Lc) day of kelOwta Locic Notary Public DONNA BARLOW BEES Notary Public - State of Colorado Notary ID 20174018050 My Commission Expires ires Apr 26, 2021 USE BY SPECIAL REVIEW (USR) QUESTIONNAIRE Outrigger DJ Operating LLC - Koki Compressor Station Planning Questions: 1. Explain, in detail, the proposed use of the property. This station will be used to transport natural gas in pipelines. The gas requires pressurization to be efficiently transported. The Koki Compressor Station will receive low pressure gas and discharge high pressure gas thereby allowing the gas to continue traveling along pipelines. The Koki Compressor Station will have an initial capacity of 20M MSCFD with capability up to SUM MSCFD. Station equipment includes a slug catcher, two (2) cornpressors, dehydration, filtration, fuel gas conditioning, instrument air, tanks and combustors for the tanks and BTEX unit. A control building that will house electrical gear and a communication antenna will also be at the site. There are future expansion plans to add four (4) additional compression units, dehydration skid and associated equipment within the propose property boundaries. In addition to serving as a compressor station, this facility will also be taking in produced water from a gathering pipeline and pumping it to an offsite disposal facility. Explain how this proposal is consistent with the intent of the Weld County Code, Chapter 22 of the Comprehensive Plan. This proposal supports the Economic Development goals and policies outlined in Sec 22-6-20 and the agricultural private property rights covered in 22-2-10 while simultaneously complying with the goals and policies set forth regarding Natural Resources in Sec 22-5-100. This station is designed to minimize the impact of incompatibilities that occur between the natural site features and surrounding properties per Section 22-2-100 E while acceding to the County's desire to promote the safety of all citizens and structures, Section 22-5-100 B. The County does recognize individual property owner's rights to request a land use change per Section 22-2-20 G., stating that such development should be supported and Outrigger is attempting to be compatible with the region as stated in the same Section. Outrigger has and will continue to communicate with surrounding property owners per Section 22-2-20 1.5 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 Section 23-3-40 states that agricultural land may be used, with permit, for oil and gas facilities, support and services. This site is consistent with stated intent (23-3-40 A.2). This station will be consistent with the intent of the Agricultural Zone District, section 23-2-230.B, as well as being compatible with the existing surrounding land uses. 4. Describe what type of land uses surround the site. Explain how the proposed use is consistent and compatible with surrounding land uses. The areas surrounding the site have agricultural land use as well as oil and gas exploration and development. There is a well pad/tank battery adjacent to this site and one about 'A of a mile to the east. The station is designed with minimal impact to the surrounding area. What are the hours and days of operation? The station will be operating 24/7. Page 1 of 5 USE BY SPECIAL REVIEW (USR) QUESTIONNAIRE Outrigger DJ Operating LLC - Koki Compressor Station 6. List the number of full-time and/or part time employees proposed to work at this site. This will be an unmanned site. Operators from Makena will check in once a day as needed for maintenance or upkeep. If shift work is proposed include the number of employees per shift. N/A List the number of people who will use this site. Include contractors, truck drivers, customers, volunteers, etc. During construction it could vary between 20 -40 people. These will include construction workers, managers, safety personnel, truck deliveries, inspectors After construction, one or two operators may be on site daily for less than two hours. Truck drivers who haul away water will frequent the site two times a month. 9. If this is a dairy, livestock confinement operation, kennel, etc. list the number and type of animal. N/A 10. Describe the type of lot surface and the square footage of each type. (e.g. asphalt, gravel, landscaping, dirt, grass, buildings) Gravel - 392,000 square ft Buildings and skids - Initial 2,500 square ft, Full build -out 6,500 square ft Natural grass - 10 acres Dirt 43,560 square ft 11. How many parking spaces are proposed? How many handicapped (ADA) parking spaces are proposed? Two parking spaces This unmanned site will not have handicapped parking spaces 12. Explain the existing and proposed landscaping for the site The existing site is natural grasses with no improvements or farming. The site is in a remote, and region. See pictures. The proposed compressor station will be graveled with natural grasses remaining outside the fenced area. No additional landscaping will be implemented due to the and nature of the area. 13. Describe the type of fence proposed for the site. A 6 -foot chain link fence is proposed with a manual gates for access to the site. 14. Describe the proposed screening for all parking and outdoor storage areas At this time, there is no screening plan for this site. There is only one house within a 3/4 mile radius of the site. This owner has no objection to the compressor station. 15. Explain any proposed reclamation procedures when termination of the Use by Special Review activity occurs. Page 2 of 5 USE BY SPECIAL REVIEW (USR) QUESTIONNAIRE Outrigger DJ Operating LLC - Koki Compressor Station When this site is no longer in use as a compressor station, it will be returned to its natural native grasses. 16. Who will provide fire protection to the site? The Briggsdale volunteer fire department, 970-656-3503. They have been sent notification along with Outrigger contact information and have acknowledged notification. They will be sent appropriate emergency info with muster areas and access points before the compressor station is brought on line, per their request. (Please see attached Emergency Action Plan.) 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. Landscaping, as discussed under #12, will be gravel and dirt inside the fence and natural grasses, as common to the area, outside the fence. Surrounding property owners will be notified of the planned site including the natural grass landscaping. The compressor station will be fenced with a 6' high chain link fence with barbed wire on top. There will be two manually operated gates for vehicle access and at least four man gates. The fence will be installed after grading is complete. Screening is not planned as described in #14. Surrounding property owners will be notified that no screening is planned for this site. Proposed Structures: two (2) 24' x 34' prefabricated compressor buildings, one (1) 1►0' x 30' prefabricated MCC/Control building, two (2) 6x8 prefabricated meter houses, one (1) 11' x 24' Instrument A►ir Skid. Buildings will be permitted through Weld County Building Depa rtment. The site grading will include a waterquality feature. This water quality feature is described in the drainage plan. It is shown on the plot plan and designated as a "No Build/No Storage Area". An Access Permit is being applied for access onto the site from County Road 95. Location of planned lights is shown on the plot plan. All lights will be mounted on pipe rack or on buildings with the exception of light pole being located by the truck loading area or as needed for safety. Lights will not overly illuminate large areas and will be directed at 90 degrees to the natural ground plane. Lighting will comply with Weld County dark sky standards. Additionally, Outrigger will address any concerns received from surrounding property owners who are notified of the site plans. Outrigger has taken into consideration noise concerns in the planning of this site. Compressors will be in buildings and will have hospital -grade silencers. Valves with noise levels above 70 dBs will be insulated. Noise will not exceed county requirements at the property lines. Outrigger is in communication with surrounding property owners and will continue to communicate with them. Improvements will begin when appropriate permitting approval is received. Engineering Questions: 1. Describe how many roundtrips/day are expected for each vehicle type: (During normal compressor station operations) Page 3 of 5 USE BY SPECIAL REVIEW (USR) QUESTIONNAIRE Outrigger DJ Operating LLC - Koki Compressor Station Passenger cars' pickups: 1 or 2 RT per day Tandem trucks: 2 RT per month Semi-trucks/trailers: 1 RT per month RVs: 0 PLEASE NOTE: During construction on any given day 20 - 30 RT could occur from any of the various vehicle types 2. Describe the expected travel routes for the site. Access to/from the site will be from Highway 14, turning south onto CR 93, then heading east on CR 88, and turning north on CR 95 to the access point on the west side of CR 95. (NOTE: This route will be follwed due to the request of the landowner.) 3. Describe the travel distribution along the routes. Approximately 90% of the traffic will be heading east on Hwy 14 turning south onto CR 93. The remaining 10% of traffic will be heading west on Hwy 14 and turning south onto CR 93. Travel from CR 93 to the compressor station entrance will follow the same route as described above. 4. Describe the time of day that you expect the highest traffic volume from above. 6:30 -7:30 a.m. and 4:30 — 5:30 p.m. 5. Describe where the access to the site is planned. One access is planned on the west side of CR 95 approximately 1,000' north of CR 88. 6. Drainage Design: Water Quality Feature 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. A.) Does your site qualify for an exception to stormwater detention? YES B.) Does your site require a stormwater detention pond? NO; HOWEVER, a water quality feature described in the drainage report will be provided. Environmental Health Questions: 1. What is the drinking water source on the property? The drinking water will be delivered weekly during construction. This is an unmanned site so water will not be supplied after construction 2. What type of sewage disposal system is on the property? There is no sewage disposal system on site. Port -a toilets will be provided during construction per OSHA standard 3. If storage or warehousing is proposed, what type of items will be stored? Temporary tank storage of slop water to be trucked off site for disposal 4. Describe where and how storage and/or stockpile of wastes, chemicals, and/or petroleum will occur on this site 400 BBL API storage tanks will hold slop water until it is trucked off site to a proper disposal facility. Page 4 of 5 USE BY SPECIAL REVIEW (USR) QUESTIONNAIRE Outrigger DJ Operating LLC - Koki Compressor Station S. If there will be fuel storage on site indicate the gallons and the secondary containment. State the number of tanks and gallons per tank. There will be no fuel storage on site. If there will be washing of vehicles or equipment on site indicate how the wash water will be contained. No vehicle washing is planned If there will be floor drains indicate how the fluids will be contained. No floor drains are planned. Indicate if there will be any air emissions. (e.g. painting, oil storage, etc.) Air permits have been applied for with the State 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. Building Questions: 1. List the type, size (square footage), and number of existing and proposed structures. Existing Structures — NONE Proposed structures: two (2) 24' x 34' prefabricated compressor buildings, one (1) 10' x 30' prefabricated MCC/Control building, two (2) 6x8 prefabricated meter houses, one (1) 11' x 24' Instrument A►ir Skid. Reference provided site plot plan 2. Explain how the existing structures will be used for this USR? N/A► 3. List the proposed use(s) of each structure. The MCC/control building will be used to house the electrical equipment, controls, etc. to run the compressor station. There will be a computer desk area for operators to use during site visits. The meter houses are to protect sensitive metering/monitoring equipment The instrument air building will house the instrument air compressors Each station compressor will have its own artic package building, which helps protect the compressors as well as aids in noise control. See provided maps to locate structures, parking, public roads, access points, and property boundary. Page 5 of 5 Weld County Public Works Dept. 1 111 H Street Pio. Box 758 Greeley, CO 80632 Phone: (970)304-6496 Fax (970)304-6497 Property Owner Name Anna Hill Company Ad dress 438'15 CR 95 City Briggsdale State CC) zip 80611 970-656-3646 Phone Fax E-mail Parcel Location The access is on WCR 9 Nearest Intersection: WCR95 & WCR BS Dist. from Intersection (approxin ft. Parcel Number(s) Sub - TBD N R6 Section/Township/Range526 "i' '' 1000 Total # of Existing Accesses to -parcel Prc , psedd Use D Temporary (Tracking Pad Required) (#) Ll Small Commercial (#) Field (Agriculture Only) (#)_ _ ACCESS PERMIT APPLICATION FORM Authorized Agent/Applicant (if different from Owner) Name Cody Kerrigan + or�� air'' Outrigger DJ Operating LLC Address 1200 Seventeenth Street City Denver State GO zip 80202 Phone Fax E- rmaii ck rrigan@outrig er-energy.co n 720-361-2551 Existinfl County Road Surface Information Asphalt i Gravel Treated Other Proposed Access. Information Culvert Size & Type (15" CM Pi/RCP min.) Pviaterials used to construct access Access Construction Start Date 11/2018 Access Construction Finish Dates" /201 9 Li Single Residential (U) O Oil & Gas (#) ❑ Large Commercial (4) H I ndustrial (#} u Subdivision U#) Is this access associated with a Planning or Building Department Process? USR MUSR RECX/SUBX n PUD i WOGLA a COMPLEX <IA required) Pianning/Buillding Department case tt Required Attached Documents Traffic control Plan (a generic plan can be found at https: 'wwww,,weld n Other ov,com decaliments ublic works'permits During the review process ft may be determined that a right-of-way use permit will be required as welt. - Certificate of Insurance (with "Weld County, Colorado" listed as the certificate holder & as an additional insured) Access Pictures. (from the left, right, into &. out of the access N, S, E, & W} - Access Authorization Form (Nat required if the application is signed by the landowner.) Fee schedule (to be determined by permitting agency) • $75 each access point: Temporary, Small Commercial, Oil & Gas, Single Family Residential - $150 each access point: industrial, Large Commercial, Subdivisions Field (Agriculture only): no cost Parcel .Sketch (or provide an aerial on an add'l Sheet) A= Existing Access A= Proposed Access 90% T N rirj U CR 90 / HWY 14 UI or1 U Description of Work or Reason for Permit WCR 88 °M00D" Irwin intersection to access point An access permit is requested for access to the Koki Compressor Station. Access to site from the west side of CFA 95, approximately 1000' north of CR 88 By accepting this permit, the undersigned Property Owner/Authorized Agent, under penalty of perjury, verifies they have received all pages of the permit application; they have read and understand all the permit requirements and provisions set forth on all pages. By virtue of their signature the Property Owner/Authorized Agent is bound by and agrees to comply with all said permit requirements and provisions, all Weld County ordinances, and state laws regarding access construction. Printed NaNameCody KerriganKerrigan❑ate9/13/18 Signature Printed NameTammy ZIC11beIITIafiI Date 9/1 3'�1$ (In case of multiple Property Owners/Authorized Agents) 6 Access Permits are good for 1 year from the date of issuance. Property Owner/Authorized Agent must obtain a new permit or request an extension if the construction of the access point is not completed In that turnefrarne. • Extensions are subject to approval by Public Works • County regulations on road access can be found in Article V of Chapter 32 of the Weld County Code. IN1 t HATLO SLUM:HU N S OUTRIGGER ENERGY ) September 13, 2018 Weld County Department of Public Works Public Works Development Engineer 1111 H Street Greeley, Colorado 80631 Subject: Outrigger Energy Kaki Compressor Station — Drainage Narrative To Whom It May Concern: The proposed compressor station site is located in Weld County, Colorado, approximately 8.8 miles East of Briggsdaie Colorado in the southeast 1/4 of Section 26, Township 8 North, Range 61 West of the 6th Principal Meridian. The project entails the construction of a new compressor station that will be used to transport natural gas through pipelines. The developed site will encompass approximately 10 acres within the 20 acre platted parcel, owned by Outrigger Energy. This letter is intended to provide a summary of the site drainage plan for the proposed Koki Compressor Station. EXISTING SITE DESCRIPTION The site of the proposed compressor station is situated approximately 1000 feet North of the intersection of Weld County Road 88 and 95. The site consists of mostly undeveloped rangeland, with a natural gas wellhead and associated small diameter tanks located just south-west of the site. The areas surrounding the parcel also consist of undeveloped rangeland and farmland in all directions. The parcel generally slopes to the southwest at grades from 1% to 3%. The existing site drainage at the location of the proposed compressor station appears to partially sheet flow to the south and south-west across the site during larger rain events to the roadside ditch located along Weld County Road 88. The entire parcel where the compressor station site will be located is comprised of 60% Olney fine sandy loam and 40% Vona sandy loam based on the Soil Map determined from the Natural Resources Conservation Service Web Soil Survey. Olney sands belong to Hydrologic Soil Group B and Vona sandy Loam belongs to Hydrologic soil group A. Hydrologic Soil group A have a high infiltration rate while group B have a moderate infiltration rate. The site is not located within a FEMA designated 100 year floodplain, as per Flood Insurance Rate Map number 08123C10505E. The existing parcel impervious percentage was calculated to be 2%. PROPOSED SITE DESCRIPTION The proposed compressor station site would include skidded buildings and equipment placed on gravel pads, gravel roads, and gravel finished working surfaces. The existing parcel drainage that presently drains onto the site, would be directed around the site using a proposed 2 foot high earthen berm that will be replanted with native grasses. The diverted drainage will follow the historical path to the southwest and discharge into the roadside ditch along CR 88. The onsite drainage will be directed to a proposed Water Quality Capture Feature located on the southern and western perimeter of the site. Runoff volumes in excess of the Water Quality PUBLIC WORKS DEVELOPMENT ENGINEER PAGE 2 SEPTEMBER 13, 2O18 Capture Feature capacity will exit and be discharged along the historical drainage path. The drainage channels will be replanted with native grasses and protected with an erosion control blanket to allow for final stabilization. The parcel imperviousness, after the site development, along with existing site installations, was calculated to be 10.0%. WATER QUALITY CAPTURE FEATURE It is proposed that a Water Quality Capture Feature be provided, in lieu of a detention pond for the compressor station site. The Water Quality Capture Feature will allow stormwater run-off from the developed site to be collected and settle out any contaminants. The Water Quality Capture Volume (WQCV) of the feature is calculated based on the Urban Storm Drainage Criteria Manual, Volume 3, Section 3.3, Equation 3-1. WQCV = a (0.911 —1.1912 + 0.781) Where: WQCV = Water Quality Capture Volume (watershed inches) a = Coefficient corresponding to WQCV drain time, from Table 3-2 of the reference = 1.0, conforms to a 40 hour drain time as required in the Weld County Engineering and Construction Criteria, Section 5.11.1 1 = Composite Imperviousness of Site (%/100) The composite imperviousness of 0.182 for the compression station site was calculated based on the following data: LAND SURFACE CHARACTERISTICS IMPERVIOUS (Note 1) FACTOR CATCHMENT TRIBUTARY ACREAGE Roofs 0.90 0.23 Greenbelts, agricultural 0.02 6.08 Gravel (packed) 0.40 3.67 Concrete Foundations 1.00 0.02 TOTAL ACRES = 10.0 Note 1: Impervious factor from the Urban Storm Drainage Criteria Manual, Volume 1, Section 2.7, Table RO-3 Therefore, WQCV = 1.0[ 0.91 x 0.183) — (1.19 x 0.189 + (0.78 x 0.18)] 0.107 watershed inches The required storage volume of the basin is then calculated as: V = WQCV(A) 12 Where: PUBLIC WORKS DEVELOPMENT ENGINEER PAGE 3 SEPTEMBER 13, 2018 V = Required storage volume (acre-feet) A = Tributary catchment area upstream (acres) Therefore, V = (0.107 watershed inches){ 10.0 acres) 12 = 0.0892926 acre-feet 3900 cubic feet The proposed WQCV basin will provide a storage volume of 0.165 acre-feet, or 7200 cubic feet, at a maximum depth of 2 foot. The pond will infiltrate the soil in less than 40 hours. In the event of stormwater volumes in excess of the basin capacity, stormwater will overflow the basin and will sheet flow along the historic drainage path towards the southwest to the existing drainage along country road 88. CONCLUSIONS This site will have an estimated total parcel imperviousness of 10.0, and does not have any expected downstream impacts due to the development of the compressor station and the installation of the Water Quality Control Feature described above. Per Section 23-12-30-F of the Weld County Code, this drainage narrative requests an approved variance of the stormwater detention requirement. We appreciate your consideration in this matter, and please feel free to contact me with any questions Sincerely, Co nor Feeney, P.E. Sr. Civil/Structural Engineer DRAINAGE REPORT REVIEW CHECKLIST REPORT (I = complete, ❑ = required) Stamped by PE, scanned electronic PDF acceptable Certification of Compliance Variance request, if applicable Description/Scope of Work Number of acres for the site Methodologies used for drainage report & analysis Design Parameters Design storm Release rate URBANIZING or NON -URBANIZING Overall post construction site imperviousness — See #2 below Soils types 70% B, 30% A Discuss how the offsite drainage is being routed Conclusion statement must also include the following: Indicate that the historical flow patterns and run-off amounts will be maintained in such a manner that it will reasonably preserve the natural character of the area and prevent property damage of the type generally attributed to run-off rate and velocity increases, diversions, concentration and/or unplanned ponding of storm run-off for the 100 -year storm. ❑ How the project impacts are mitigated. Construction Drawings ❑Drawings stamped by PE, (scanned electronic PDF preferred) Drainage facilities Outlet details Spillway Maintenance Plan ❑Frequency of onsite inspections I Repa i rs, if needed ❑ Cleaning of sediment and debris from drainage facilities Vegetation maintenance ❑ Include manufacturer maintenance specifications, if applicable Comments: 1. The site does not appear to meet any of the criteria listed in Weld County Code Section 23-21-30F, for exemptions from requiring detention. The County requires detention ponds be sized using the historic 10 - year runoff value as the pond release rate during the 100 -year, 1 -hour storm event. Retention ponds are allowed only when the site topography does not allow for outfall l location. Please provide a detention pond design for the site, per the code requirements. Code: https://library.municode.com/co/weld county/codes/charter and county code?nodeld=CH2370 ARTXIIS TDRCR Project Name: The purpose of this checklist is to provide the applicant's Engineer a basic list of items that County Staff will review in regards to a drainage report. The drainage design shall meet the requirements of the Weld County Code and commonly accepted engineering practices and methodologies. A detention pond design (or other stormwater mitigation design) is appropriate for projects which have a potential to adversely affect downstream neighbors and public rights -of -way from changes in stormwater runoff as a result of the development project. The design engineer's role is to ensure adjacent property owners are not adversely affected by stormwater runoff created by development of the applicant's property. xl LI xl xl U 4/11/2018 xl Weld County Department of Public Works' Development Review 1111 H Street, Greeley, CO 80631 I P h : 970-400-3750 I Fax: 970-304-6497 www. weldg ov. oorn/departments/pub lio_works/development_ review/ DRAINAGE REPORT REVIEW CHECKLIST 2. Most compressor sites like this are covered in gravel for fire prevention. Please ensure that the proposed impervious value reflects what the site condition will be when the site is built out. When calculating the weighted C value for the proposed site, please model the pond water surface area using a 100% impervious value. 1. Please provide spreadsheet information for the rational calculations referenced in the report. Historic basins should be modeled using 2% imperviousness. 2. Please address any off -site flows for the property. Off -site flows can either be routed around the site or be passed over the pond's emergency overflow spillway undetained. 3. Please provide a detailed grading plan showing contours of the proposed pond, site grading and any other necessary drainage swales or berms. 4. Please provide a drawing showing stormwater basin delineations for on -site and off -site basins. Provide arrows showing flow patterns on the map. 5. When sizing the pond, water quality should be provided. The WQCcan be included within the detention volume. One foot of freeboard is required for the pond. Please provide a stage storage table for the proposed pond based on graded contour data, showing the WQCelevation and 100 -year WSEL. 6. An outlet structure with an orifice for water quality and a separate plate/orifice for detention release will be required. Please provide details of the final structure. 7. An emergency overflow weir will be required for the pond. The weir should be sized to pass the 100 -year developed flows at a depth no greater than 0.5'. 8. Please provide a section in the report on how maintenance of the pond will be addressed in the future. Add pertinent notes to the drainage exhibit for future reference. 9. Please provide additional calculations for swales or culverts necessary to transport site flows to the detention pond or other major drainage area on -site. Swale and culvert calculations should be provided for off -site flows being routed around the site as required. a. Swales es should be sized to convey the 100 -year developed or historic flow plus freeboard. i. The requirement is a foot of freeboard for flows over 50 cfs. ii. For flows under 50 cfs, 1.33 x the design flow may be used. 10. Please show the rainfall depths used in the calculations, either from the maps provided in the report or from the NOAA Atlas website(https://hdsc.nws.noaa.gov/hdsclpfds/pfds_map_cont.html). 11. Once the revised design and drainage report have been submitted, the County may provide additional comments in addition to the ones listed above. Depending on the complexity of the changes made, a full 28 -day review period may be required. 12. Please provide a written response on how the above comments have been addressed when resubmitting the drainage report. Thank -you. 4/11/2018 Weld County Department of Public Worksl Development Review 1111 H Street, Greeley, CO 80631 P h : 970-400-3750 Fax: 970-304-6497 wuwuwu.weldgov.comldepartments/publicworks/development _ review/ FOR COMMERCIAL SITES, PLEASE COMPLETE THE FOLLOWING INFORMATION BUSINESS EMERGENCY INFORMATION: Business Name: Koki Compressor Station Phone: Address: TBD, S26, T8N, R61W City, ST, zip: [9 miles east of Briggsdale 80611] Business Owner: Outrigger DJ Operating, LLC Phone: 720-368-7312 Home Address: 1200 17th Street, Suite 900 City, ST, Zip: Denver, CO 80202 List three persons in the order to be called in the event of an emergency: NAME TITLE Cody Kerrigan Project Manager ADDRESS PHONE 1200 17th Street, Suite 900 720-361-2551 Trent Taylor Manager of Land Development 1200 17th Street, Suite 900 720-361-2575 Andrew Perdue Sr Project Manager 1200 17th Street, Suite 900 720-361-2580 Business Hours: under construction Days: Monday - Sunday Type of Alarm: /I None Burglar Holdup Fire Name and address of Alarm Company: Location of Safe: N/A Silent Audible ********************************************************************************************************************************* MISCELLANEOUS INFORMATION: Number of entry/exit doors in this building: NSA Location(s): Is alcohol stored in building? N/A Location(s): Are drugs stored in building? N/A Location(s): Are weapons stored in building? NIA Location(s): The following programs are offered as a public service of the Weld County Sheriffs Office. Please indicate the programs of interest. Physical Security Check l Crime Prevention Presentation UTILITY SHUT OFF LOCATIONS: Main Electrical: None currently Gas Shut Off: None currently Exterior Water Shutoff: None currently Interior Water Shutoff: None currently NOISE MITIGATION NARRATIVE USR APPLICATION - USR18-XXXX KOKI COMPRESSOR STATION - A PARCEL LOCATED IN THE SE % OF S26, T8N, R61W The Outrigger Koki Compressor Station will be located on the west side of CR 9►5 about 3/4 mile south of Hwy 14. The Koki Compressor Station is approximately eight and a half miles east of the town of Briggsdale. This is a remote area. The land owner has a house approximately 2/3 mile north of the site, there is a house about a mile west of the site and a house about a mile east of the site. Outrigger Energy has been in communication with home owners to ensure they do not have issues with noise. Even though this is a remote location, Outrigger has taken into consideration noise concerns in the planning of this site: Compressors will be in artic-style buildings Valves with noise levels above 70 dBs will be insulated and have whisper trim where applicable. With these noise mitigation plans in place, Outrigger will meet or surpass Weld County noise requirements for this area. TRAFFIC NARRATIVE USR APPLICATION REQUIREMENT - PRE-APP#18-0251 KOKI COMPRESSOR STATION - A PARCEL LOCATED IN THE SE % OF S26, T8N, R61W The Outrigger Koki Compressor Station will be located on the west side of CR 95 about a 3/4 mile south of Hwy 14. Outrigger Energy is applying for an Access Permit from CR 95 for access to its site. Most traffic in/out of the plant will be from Hwy 14, turning south on CR 93, continuing on CR 93 until CR 88, turning east on CR 88, and then turning north on CR 95 to the access point (approximately 800 ft.) on the west side of CR 95. Approximately 90% of the traffic will be heading east on Hwy 14, turning south onto CR 93. The remaining 10% will be traveling west on Hwy 14, turning south onto CR 93 and following the same route described above. During construction round trips could be as high as 30/day. Once construction is complete, the expected volume of traffic is approximately 1-2 vehicle round trips per day as needed for this unmanned site. The anticipated highest volume of traffic will be in the morning from 6:30 — 7:30 a.m. and in the evening from 4:30 — 5:30 p.m. Tammy Zimbelman From: Sent: To: Subject: briggsdalefire@wigginstel.com Friday, September 07, 2018 2:37 PM Tammy Zimbelman Re: Fire District Notification Thank you for the notification, we will need the site ERP, company wide ERP, map of location, and buildings, and all access routes. Chief James Dilka Briggsdale Fire Protection District On 2018-09-07 13:44, Tammy Zimbelman wrote: > Hello Chief Dilka, > I am contacting you on behalf of my client, Outrigger DJ Operating, to > give notification that they are in the process of permitting a > compressor station in your area. The location of the compressor > station is approximately % of a mile south of Highway 14 on CR 95. > > I have attached Outrigger personnel contact information in case of an > emergency. We will submit our full emergency action plan to you once > it is finalized. This will be an unmanned site. > > Please acknowledge receipt of this email and let me know if you have > any questions or need additional information. > > Thank you, > TAMMY ZIMBELMAN, PMP I Project Manager I ZAP Engineering & > Construction Services, Inc. > O: 303.656.4806 I C: 720.353.2497 I www.zapecs.com [1] j333 S. > Allison > Parkway Suite 100 Lakewood, CO 80226 > > This electronic mail message may contain CONFIDENTIAL information > which is (a) CLIENT PRIVILEGED COMMUNICATION, WORK PRODUCT, > PROPRIETARY IN NATURE, OR OTHERWISE PROTECTED BY LAW FROM DISCLOSURE, > and (b) intended only for the use of the Addressee(s) named herein. > If > you are not an Addressee, or the person responsible for delivering > this to an Addressee, you are hereby notified that reading, copying, > or distributing this message is prohibited. If you have received this > electronic mail message in error, please reply to the sender and take > the steps necessary to delete the message completely from your > computer system. > > Links: [1] htt :// w .za ecs.com/ 2 SPIRIT ENVIRONMENTAL Construction General Permit Storm Water Management Plan Colorado Discharge Permit System Outrigger DJ Operating Project Weld County, Colorado June 2018 PREPARED FOR: Outrigger DJ Operating LLC Denver, Colorado SPIRIT PROJECT:18 50.00A FOR SPIRIT ENVIRONMENTAL: Ashley I kameto-dew OFFICE: 281-664-2490 FAX: 281-664-2491 20465 State Highway 249, Suite 300 Houston, TX 77070 spiritenv.cor r Becky Kileo Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Table of Contents Table of Contents 1.0 Certification 1-1 2.0 Permit Administration and Coverage 2-1 2.1 Permit Coverage 2-1 2.2 SWMP Administrators 2-1 2.3 Record Requirements 2-1 2.4 Discharges Eligible for Authorization 2-2 2.5 Limitations on Permit Coverage 2-2 2.6 Impaired Receiving Waters and TMDL Requirements 2-4 3.0 Area Description 3-1 3.1 Nature of Construction and Site Description 3-1 3.2 Potential Pollutants and Locations 3-2 3.3 Facilities Construction Schedule 3-2 3.4 Pipelines Construction Schedule 3-3 4.0 Best Management Practices 4-1 4.1 General Requirements 4-1 4.2 Sediment Control Practices 4-1 4.3 Erosion Controls and Stabilization Practices 4-2 4.4 Permanent Stormwater Controls 4-5 4.5 Other Required Controls and BMPs 4-5 4.6 Good Housekeeping Practices 4-5 4.7 Concrete Truck Wash Out 4-6 4.8 Maintenance of Controls 4-6 5.0 Inspections 5-1 5.1 BMP Checklist ....5-2 5.2 Corrective Action Log 5-8 6.0 Reporting 6-1 Spirit Environmental, LLC 18350.00A June 2018 ii Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Table of Contents Table of Contents (continued) 7.0 Training 7-1 7.1 Training Record Log 7-1 8.0 Attachments and Site -Specific Information 8-1 Attachment 1 8-2 Attachment 2 8-3 Attachment 3 8-4 Attachment 4 8-5 Attachment 5 8-10 Attachment 6 8-15 Spirit Environmental, LLC 18350.00A June 2018 iii Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC List of Tables List of Tables Table 3-1 List of Potential Pollutants 3-2 Spirit Environmental, LLC 18350.00A June 2018 iv Construction General Permit Storm Water Management Plan,. Outrigger DJ Operating Llt Certiccation 1.0 Certification I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Signatory Requirements in accordance with Part I. F. 11c (relating to Certification: Signed: Title: rat, LThsre pro3ech Akewv1064/ Dike: 60/14-1/1� Spirit Environmental, LLC 18350.00A June 2018 1-1 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Permit Administration and Coverage 2.0 Permit Administration and Coverage 2.1 Permit Coverage Outrigger DJ Operating LLC ("Outrigger") is the owner and operator of the construction activities. Outrigger will prepare and submit a Stormwater Discharge Associated with Construction Activities Application ("Application") to the Colorado Department of Public Health and Environment ("CDPHE"). Outrigger is seeking field -wide permit coverage for their planned operations near Keota in north central Weld County and has prepared this Master Storm Water Management Plan ("SWMP") covering the proposed area. Stormwater runoff associated with construction activities and construction support activities are authorized by the Colorado Discharge Permit System ("CDPS") Construction General Permit ("CGP") No. COR-030000,. effective May 31, 2007, as administered by the CDPHE. A copy of the CGP is included in Attachment 1 and a copy of the Application is provided in Attachment 2. 2.2 SWMP Administrators The Construction Manager and Field Operations Manager are responsible for implementing, maintaining, and revising the SWMP. The activities and responsibilities of the SWMP administrators will address each aspect of the facility's SWMP. 2.3 Record Requirements The operator will retain copies of the SWMP, its associated reports (e.g. inspection reports), and records of data used to complete the application as required by the CGP. These records will be saved for three (3) years after the expiration or inactivation of permit coverage. The operator will retain a copy of the SWMP required by the CGP at each active construction site from the date of project initiation to the date of stabilization. If the SWMP will not be at the active construction site then another location can be used once it is approved by the CDPHE. Spirit Environmental, LLC 18350.00A June 2018 2-1 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Permit Administration and Coverage 2.4 Discharges Eligible for Authorization The following discharges are eligible for authorization under the CGP: • Stormwater associated with construction activity; Discharges of stormwater associated with construction support activities; and • Non-stormwater discharges, which include: ■ Discharges from areas that are dedicated to producing earthen materials, such as soils, sand and gravel, for use at a single construction site (i.e., borrow or fill areas). ■ Discharges from emergency firefighting activities (firefighting activities do not include washing of trucks, run-off water from training activities, test water from fire suppression systems, or similar activities); ■ Discharges to the ground of concrete washout water from washing of tools and concrete mixer chutes may be authorized by this permit, provided that: o The source is identified in the SWMP; P; c Best Management Practices ("BMPs") are included in the SWMP in accordance with Part I. C.3(c)(7) and to prevent pollution of groundwater in violation of Part I. D.1.a; and Discharges do not leave the site as surface runoff or to surface waters. ■ Discharges to the ground of water from construction dewatering activities may be authorized by this permit, provided that: The source is groundwater and/or groundwater combined with stormwater that does not contain pollutants in concentrations exceeding the State groundwater standards in Regulations 5 Code of Colorado Regulations ("CCR") 1002-41 and 42; The source is identified in the SWMP; a BMPs are included in the SWMP, as required by Part l.C.3(c)(8); and Discharges do not leave the site as surface runoff or to surface waters. ■ Uncontaminated ground water or spring water; a n d ■ Landscape irrigation return flow. 2.5 Limitations on Permit Coverage The following limitations shall apply to all discharges covered by this permit: Spirit Environmental, LLC 18350.OOA June 2018 2-2 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Permit Administration and Coverage • Stormwater discharges from construction activities shall not cause, have the reasonable potential to cause, or measurably contribute to an exceedance of any water quality standard, including narrative standards for water quality. • Concrete washout water shall not be discharged to state surface waters or to storm sewer systems. On -site permanent disposal of concrete washout waste is not authorized by this permit. Discharge to the ground of concrete washout waste that will subsequently be disposed of off -site is authorized by this permit. See Part I.D.3.c of the permit. • Bulk storage structures for petroleum products and any other chemicals shall have secondary containment or equivalent adequate protection so as to contain spills and prevent spilled material from entering State waters. • No chemicals are to be added to the discharge unless permission for the use of a specific chemical is granted by CDPHE. In granting the use of such chemicals, special conditions and monitoring may be addressed by separate correspondence. • CDPHE reserves the right to require sampling and testing, on a case -by -case basis, in the event that there is reason to suspect that compliance with the SWMP is a problem, or to measure the effectiveness of the BMPs in removing pollutants in the effluent. Such monitoring may include Whole Effluent Toxicity testing. • Site wastes must be properly managed to prevent potential pollution of State waters. This permit does not authorize on -site waste disposal. • Dischargers must comply with the lawful requirements of federal agencies, municipalities, counties, drainage districts and other local agencies regarding discharges of stormwater to storm drain systems or other water courses under their jurisdiction, including applicable requirements in municipal stormwater management programs developed to comply with CDPS permits. Dischargers must comply with local stormwater management requirements, policies or guidelines including erosion and sediment control. The following items are not covered under the CGP: • Stormwater discharged from construction sites that is mixed with stormwater from other types of industrial activities, or process water of any kind. • Discharge of process water to surface waters. • Post construction discharges; • Non-stormwater discharges that are not listed in Section 2.2 above; Spirit Environmental, LLC 18350.OOA June 2018 2-3 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Permit Administration and Coverage • Discharges to surface water in the state that would cause, have the reasonable potential to cause, or contribute to a violation of water quality standards or that would fail to protect and maintain existing designated uses of surface water in the state; • New sources or new discharges of the pollutants of concern for which there is an established Total Maximum Daily Load ("TMDL"); • Stormwater runoff from construction activities occurring on Indian Country lands; • Contaminated groundwater requiring coverage under a separate CDPS discharge permit; and • Discharge of mine water or process water from such areas. 2.6 Impaired Receiving Waters and TMDL Requirements Stormwater runoff from construction activities occurring on the west side of the project area will drain southwest to Crow Creek and construction on the rest of Project Site will drain to: • Bidwell Lake — Crow Creek • West Greasewood Flats Upper Sanborn Draw • Greasewood Lake -East Greasewood Flats • Upper Wildcat Creek The above listed receiving waters are tributaries of the South Platte River. The immediate receiving waters are not impaired; however, the South Platter River has impairment. Two (2) segments that would receive water are listed. The first segment is listed for selenium (Segment COSPMS01 B_0600) and the second segment is listed for selenium and manganese (Segment COSPLS01_0600). Spirit Environmental, LLC 18350.OOA June 2018 2-4 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Area Description 3.0 Area Description 3.1 Nature of Construction and Site Description The Operator is constructing oil and gas pipelines and associated facilities including a gas plant, compressor station, and crude terminal in north central Weld County, Colorado ("Project Site"). In the east -west direction the Project Site starts approximately 3.4 miles east of Briggsdale and ends 6 miles west of Raymer. In the north -south direction the Project Site extends four (4) miles south and approximately 13.5 miles north of West Highway 14, passing the town of Keota. The Project Site is located at approximately 4,935 — 5,020 feet above sea level. A vicinity map of the Project Site is included with the application in Attachment 2. The entire project area, which includes areas where construction support activities occur, is approximately 100 square miles and included under the scope of this SWMP. Areas outside of the project boundary are not included under the scope of this SWMP and are also not under the operational control of the operator. The operator will prepare a site map for each specific project area that is included in each site -specific attachment, starting with Attachment 4. The native overburden soils are predominately clay soils consisting of slightly moist to moist, light brown to brown, lean clay to lean clay with sand. Specifically soils in the area consist mainly of: • Weld-Stoneham-Platner-Olney-Nunn-Ascalon (s1251) • Stoneham-Nucla-Mitchell-Kim-Epping-Bayard {s1252} • Otero-Haverson-Bayard-Bankard-Aar (s8923) The majority of the Project Site consists of undeveloped, agricultural, and ranch land. Additionally, there are numerous oil and gas well pads located throughout the Project Site. The different construction projects will require the movement of dirt and grading, installation of piping and ancillary utilities, the installation of concrete foundations, vertical construction of the facilities, completion of access roads, the construction of excavation of at least one (1) detention pond, and installation of drainage piping to drainage ditches or swales. A Grading and Stabilization Activities Log is included in Section 4.3. Spirit Environmental, LLC 18350.OOA June 2018 3-1 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Area Description 3.2 Potential Pollutants and Locations Potential pollutants from construction activities and equipment utilized throughout the Project Site may be encountered. Sediment is a potential pollutant from these construction activities and erosion and sediment controls will be installed and maintained to reduce the potential of sediment in runoff from construction activities. Equipment stored onsite will be inspected for signs of spills and leaks. Building materials and/or chemicals (such as paint, stucco, concrete products, etc.) will be stored in closed containers and/or undercover to reduce the potential for comingling with stormwater runoff. Concrete washout from paving operations will be contained as described in Section 4.7. Solid waste, such as general non -hazardous trash and scrap from building materials, will be stored in onsite waste disposal bins. Additional potential pollutants that may be encountered during construction activities are listed in Table 3-1. Table 3-1 List of Potential Pollutants Potential Pollutants Source Sediment Construction and construction activities support Oil and grease Construction equipment onsite Total Petroleum hydrocarbons Fuel in aboveground construction storage tanks and vehicles TSS, Metals Buildings materials and equipment Paint, stucco, concrete, and/or (such as metal piping) building materials Construction of buildings, tanks, and foundations, process vessels General non -hazardous trash Construction and construction activities support 3.3 Facilities Construction Schedule Construction of the different facilities in the Project Site will generally progress as follows, with simultaneous phases of construction underway► at different stages: Spirit Environmental, LLC 18350.OOA June 2018 3-2 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Area Description • Installation and subsequent maintenance of erosion and sediment controls and BMPs; • Grading of the lots; • Installation of piping and ancillary utilities; • Installation of a concrete foundation; • Vertical construction of the individual sites; • Construction of detention ponds and piping to the drainage ditches; • Completion of siding and insulation installation and painting of the exterior and the connection of utilities; • Installation of sidewalks and/or drainage facilities; • Installation of sod or gravel and stabilization practices, such as seeding; and • Removal of erosion and sediment controls and BMPs. 3.4 Pipelines Construction Schedule Construction of the pipeline throughout the Project Site will generally progress as follows, with simultaneous phases of construction underway at different stages: • Installation and subsequent maintenance of erosion and sediment controls and BMPs; • Excavating the piping trench; • Installation of piping; • Installation of fill dirt and stabilization practices, such as seeding; and • Removal of erosion and sediment controls and BMPs. Spirit Environmental, LLC 18350.00A June 2018 3-3 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Best Management Practices 4.0 Best Management Practices 4.1 General Requirements BMPs will be designed to retain sediment at the individual sites to the extent practicable with consideration of local topography, soil type, and rainfall. Control measures will be properly selected, installed, and maintained according to the manufacturer's specifications. Controls will also be developed to reduce the potential for the offsite transport of litter, construction debris, and construction materials. BMPs will include hay bales/swaddles, silt fencing, stormwater detention ponds, and the use of gravel. Additionally, practices will be implemented to ensure that existing vegetation is preserved where possible. Specific BMPs implemented at each site, including erosion and sediment controls, will be depicted and updated on the site map maintained in that site's attachment, and the locations and dates of installation/maintenance will be recorded as construction progresses. BMPs and erosion and sediment controls will meet the requirements of Part 1. C. 3. C of the CGP. 4.2 Sediment Control Practices Sediment control practices at the site are depicted on the site map provided in the site -specific attachments, starting with Attachment 4. Sediment control practices will include the installation of silt fences. Silt fences will consist of reinforced filter fabric fence and will be installed down - gradient at the site, along the perimeter, and along drainage ditches/discharge points. Silt fences will be properly trenched (i.e., six (6) inches into the ground on the uphill portion of the silt fence). Sediment will be removed prior to reaching 50% of the aboveground height of the silt fence in accordance with industry practice. In areas of the site where sediment controls are needed and silt fence cannot be trenched (such as along paved areas) or in drainage channels, hay bales and/or hay swaddles may be utilized in lieu of silt fence. Hay bales/swaddles serve as a temporary sediment barrier consisting of a row of entrenched and anchored straw bales and will be used to intercept and detain small amounts of sediment from disturbed areas to reduce the potential forsediment leaving the site. Hay bales/swaddles decrease the velocity of sheet flows and low -to -moderate level channel flows. Hay bales/swaddles should be either wire -bound or string -tied. Hay bales/swaddles should be Spirit Environmental, LLC 18350.OOA June 2018 4-1 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Best Management Practices installed so that bindings are oriented around the sides rather than along the tops and bottoms in order to reduce the potential for deterioration of the bindings. When used in a swale, the barrier should be extended to such a length that the bottoms of the end bales/swaddles are higher in elevation than the top of the lowest middle bale so that sediment -laden runoff will flow either through or over the barrier but not around it. Inlets, including both catch basins and storm sewer curb inlets, may be constructed and installed at the sites. Drop inlet insert baskets consisting of water permeable geotextile material that filters sediment while allowing water to pass can be utilized at catch basins in combination with hay bales/swaddles as described above. Top frame and basket hangers can be utilized at storm sewer curb inlets. Curb inlet protection barriers should be designed to remove suspended soils, trash and debris from stormwater runoff. Sedimentation basins are recommended, where feasible, for common drainage locations that serve an area with ten (10) or more acres disturbed at one (1) time. A detention pond will serve as the sedimentation basin at the site until the outfall structure is completed. 4.3 Erosion Controls and Stabilization Practices Gravel will be used at the facilities and native grass will be planted above pipelines as an erosion control measure to initiate final stabilization. Erosion control and stabilization measures will be initiated in portions of the site where construction activities have temporarily ceased and/or will not be resumed. Stabilization measures that provide a protective cover will be initiated in portions of the site where construction activities have permanently ceased. The requirement for the operator to initiate stabilization is triggered as soon as it is known with reasonable certainty that construction activity at the site or in certain areas of the site will be stopped for an extended period of time. If the initiation or completion of stabilization is prevented by circumstances beyond the control of the operator, the operator will employ and implement alternative stabilization measures. When conditions at the site change to allow for final stabilization, then the permittee will initiate or complete final stabilization as soon as practicable. Temporary or permanent stabilization measures will not be applied to areas intended to be left un-stabilized following construction if the intended function of a specific area of the site Spirit Environmental, LLC 18350.00A June 2018 4-2 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Best Management Practices necessitates that it remain disturbed. Final stabilization will be achieved prior to the termination of permit coverage. Per the CGP, "finally stabilized" means that ground surface disturbing activities at the site have been completed, and disturbed areas have been either built on, paved, or a uniform vegetative cover has been established with an individual plant density of at least 70 percent of pre - disturbance levels, or equivalent permanent, physical erosion reduction methods have been employed. Re -seeding alone does not qualify. Dates when major grading activities occur, the dates when construction activities temporarily or permanently cease on a portion of the site; and the dates when stabilization measures are initiated will be documented and maintained using the Grading and Stabilization Activities Log on the following page. Spirit Environmental, LLC 18350.OOA June 2018 4-3 Outrigger DJ Operating LLC Construction General Permit Storni Water Management Plan Best Management Practices Grading and Stabilization Activities Log Grading Activity Initiated Date Description of Activity Grading Date Temporary Activity Ceased (indicate Permanent) Grading or Stabilization Measures Date Initiated When are Stabilization Description and Location Measure of Spirit Environmental, LLC 18350.00A June 2018 4-4 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Best Management Practices 4.4 Permanent Stormwater Controls Permanent stormwater controls may include the installation of sod, gravel, drainage soils, swales, and a detention pond with associated outfall features. These permanent stormwater controls will be maintained once construction is completed. The operator is only responsible for the installation and maintenance of stormwater management measures prior to final stabilization of the site or prior to submission of a Termination Application. 4.5 Other Required Controls and BMPs The offsite vehicle tracking of sediments and the generation of dust will be reduced, to the extent practicable. Applying water for dust control and the installation of stabilized construction access points, primarily using gravel, will be utilized throughout the Project Site. Velocity dissipation devices, such as hay swaddle check dams, will be installed at discharge locations and along the length of outfall channels, where applicable. Should it become necessary to pump or channel standing water from the site, dewatering controls, such as dewatering bags, will be utilized. The operator will implement material handling procedures to minimize impacts from procedures or significant materials will the potential for a release at each site. Significant materials could include: exposed storage of building materials; paints and solvents; fertilizers or chemicals; waste material; and equipment maintenance or fueling areas. Areas or procedures where potential spills can occur will have containment and/or spill prevention and response equipment as needed. These areas will also be inspected regularly as discussed in Section 5.0. 4.6 Good Housekeeping Practices Construction projects generate building -related waste, which can end up polluting stormwater runoff if not properly managed. The operator has established good housekeeping practices designed to reduce the potential of contamination of stormwater from a range of materials and potential wastes at the site. Trash generated at the individual sites will be stored in an onsite waste disposal bin for offsite disposal by a third -party vendor. For waste containers that do not have lids where the container itself is not secure enough to reduce the potential discharge of pollutants that do not have a cover and could leak, the operator will provide either a cover or Spirit Environmental, LLC 18350.OOA June 2018 4-5 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Best Management Practices similarly effective means designed to reduce the potential discharge of pollutants, such as secondary containment. Building materials will be stored in closed containers or under shelter. Equipment stored and/or used at the site should be inspected for signs of spills and/or leaks. Drip pans should be utilized underneath leaking equipment and preventative maintenance should be performed. Spill response items, such as oil absorbent and/or booms, will be kept in a readily accessible area in the case of a spill or leak. 4.7 Concrete Truck Wash Out Direct discharge of concrete truck wash out water to surface water in the state, including discharge to storm sewers, is prohibited by the CG P. Concrete truck wash out water will be discharged to a detention basin where structural controls have been established to prevent direct discharge to surface waters, or to areas that have a minimal slope that allow infiltration and filtering of wash out water to prevent direct discharge to surface waters. A dedicated concrete washout area will not be installed at the individual sites. 4.8 Maintenance of Controls BMPs and erosion and sediment controls will be proactively maintained in effective operating condition. BMPs that are not adequately maintained in accordance with good engineering, hydrologic and pollution control practices, including removal of collected sediment outside the acceptable tolerances of the BMPs, are considered to be no longer operating effectively and must be addressed. Site assessments will be performed according to Inspection and Maintenance procedures to ensure effective performance. If through inspections or other means, it is determined that BMPs are not operating effectively, the operator will perform maintenance as necessary to maintain the continued effectiveness of stormwater controls, and prior to the next rain event if feasible. If maintenance prior to the next anticipated storm event is impracticable, the reason will be documented in the inspection report, Section 5.0, and maintenance will be scheduled and accomplished as soon as practicable. Erosion and sediment controls that have been intentionally disabled, run -over, removed, or otherwise rendered ineffective will be replaced or corrected immediately upon discovery. If periodic inspections or other information indicates a control has been used incorrectly, is performing inadequately, or is damaged, then the operator will replace or modify the control as soon as practicable after making the discovery. Spirit Environmental, LLC 18350.OOA June 2018 4-6 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Best Management Practices Sediment should be removed from sediment traps and sedimentation ponds no later than the time that design capacity has been reduced by 50%. For perimeter controls such as silt fences, berms, etc., the trapped sediment will be removed before it reaches 50% of the above -ground height. If sediment escapes the site, accumulations must be removed at a frequency that minimizes offsite impacts prior to the next rain event, if feasible. If the operator does not own or operate the offsite conveyance, then the operator will work with the owner or operator of the property to remove the sediment. The SWMP must be updated when new BMPs are installed or BMPs are replaced as part of maintaining the controls. Spirit Environmental, LLC 18350.00A June 2018 4-7 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Inspections 5.0 Inspections Personnel will inspect disturbed areas of the construction site that have not been finally stabilized, locations where stabilization measures have been implemented, areas of construction support activity, and stormwater controls for evidence of, or the potential for, the discharge of pollutants, areas where stormwater typically flows within the construction site, and points of discharge from the construction site. Personnel conducting these inspections will be knowledgeable of the CGP, the construction activities at the site, and the SWMP for the site. Personnel conducting these inspections are not required to have signatory authority for inspection reports. The operator will include the following requirements while performing inspections: • Inspect site perimeter, disturbed areas, material and waste storage areas, discharge locations, and vehicle entry locations. • Inspect for pollutants leaving site boundaries, entry to stormwater drainage system, or discharging to state waters. • Inspect stormwater controls to ensure that they are installed properly, appear to be operational, and minimizing pollutants in discharges, as intended. • Inspections will be conducted at least once every 14 calendar days and within 24 hours of the end of a storm event after the end of a precipitation or snowmelt event that causes surface erosion. • If no construction activities occur following a storm event, inspections will be conducted prior to resuming construction within 72 hours of a storm event. • Document delayed inspections on the inspection record. • Identify locations on the construction site where new or modified stormwater controls are necessary. • Evaluate for signs of visible erosion and sedimentation that can be attributed to points of discharge where discharges leave the construction site or discharge into surface water in the state flowing within or adjacent to the construction site. • Identify incidents of noncompliance observed during the inspection. • Inspect locations where vehicles enter or exit the site for evidence of offsite sediment tracking, Spirit Environmental, LLC 18350.00A June 2018 5-1 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Inspections • Identify discharge points at the site, observe and document the visual quality of the discharge, if an inspection is performed when discharges from the construction site are occurring. • Complete necessary maintenance based on results of the inspection, • Inspections are not required at sites where construction activities are temporarily halted, snow cover exists over the entire site for an extended period, and melting conditions posing a risk of surface erosion do not exist. ■ This exception is applicable only during the period where melting conditions do not exist, and applies to the routine 14 -day and monthly inspections, as well as the post - storm -event inspections. • A report summarizing the scope of the inspection, the date(s) of the inspection, and major observations relating to the implementation of the SWMP will be made and retained as part of the SWMP in Attachment 3. Major observations will include: ■ The locations of where erosion and discharges of sediment or other pollutants from the site have occurred; ■ Locations of BMPs that need to be maintained; ■ Locations of BMPs that failed to operate as designed or proved inadequate for a particular location; ■ Locations where additional BMPs are needed; and ■ Description of corrective actions. • After adequate corrective action(s) has been taken, or where a report does not identify an incident requiring corrective action, the report shall contain a signed statement indicating the site is in compliance with the permit to the best of the signer's knowledge and belief. • Inspection records will be retained for three (3) years from expiration or inactivation of permit coverage. 5.1 BMP Checklist BMPs will be designed to retain sediment at each site to the extent practicable with consideration of local topography, soil type, and rainfall. Control measures will be properly selected, installed, and maintained according to the manufacturer's specifications. Controls will also be developed to reduce the potential for the offsite transport of litter, construction debris, and construction materials. BMPs, including erosion and sediment controls, will be depicted and updated on the Spirit Environmental, LLC 18350.OOA June 2018 5-2 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Inspections individual site maps in the site -specific attachments, and the locations and dates of installation/maintenance will be recorded as construction progresses. A► BMP inspection checklist is provided on the following page. Spirit Environmental, LLC 18350.00A June 2018 5-3 Outrigger DJ Operating LLC Construction General Permit Storm Water Management Plan Inspections BMP Inspection Checklist General Information Project Name and Location: Date of Inspection: Start/End Time: Inspector's Name(s): Inspector's Title(s): Inspector's Contact Information: Describe present phase of construction: Type of Regular Inspection: event storm event Post -storm event CI ❑ Pre -storm ❑ During ❑ Weather Information Has If Storm (in): there yes, provide: Start been Date a storm event since & Time: Storm the last Duration inspection? (hrs): Amount of Precipitation ❑Yes ❑No Approximate Weather Clear Other: at time of this inspection? Sleet Snowing ❑ High Winds ❑ ❑Cloudy ❑ Rain ❑ ❑ Fog Temperature: ❑ ❑ Have any discharges occurred since the If yes, describe: last inspection? ❑Yes ❑No Spirit Environmental, LLC 18350.00A June 2018 5-4 Outrigger DJ Operating LLC Construction General Permit Storm Water Management Plan Inspections Are there any discharges at the time of inspection? ayes ❑No If yes, describe: Site -specific BMPs • Number the structural and non-structural BMPs identified in your BMP Plan on your site map and list them below (add as many BMPs as necessary). Carry a copy of the numbered site map with you during your inspections. This list will ensure that you are inspecting each BMPs at your site. • Describe corrective actions initiated, date completed, and note the person that completed the work in the Corrective Action Log. BMP BMP Installed? BMP Maintenance Required? Corrective Action Needed and Notes I ❑Yes CINo LiYes LJNo 2 ❑Yes No ❑Yes ❑ No 3 LiYes CINo ❑Yes LNo 4 ❑Yes CINo ❑Yes ❑ No 5 ❑Yes No ❑Yes ❑ No 6 oyes CINo oYes ❑No 7 ❑Yes CINo ❑Yes ❑ No 8 oYes No ❑Yes ❑ No 9 ❑Yes No ❑Yes ❑ No Spirit Environmental, LLC 18350.OOA June 2018 5-5 Outrigger DJ Operating LLC Overall Site Issues Below are some general site issues that should be assessed during inspections. Customize this list as needed for conditions at your site. Construction General Permit Storm Water Management Plan Inspections BMP/activity Implemented? Maintenance Required? Corrective Action Needed and Notes 1 Are not stabilized? all actively slopes and disturbed being worked areas properly No ❑Yes UNo ❑Yes 2 Are streams, etc.) similar natural wetlands, protected BM Ps? resource with areas mature trees, barriers (e.g., or LiYes CINo oYes CINo 3 Are perimeter excavations (keyed into maintained? controls adequately substrate) around installed open and ❑Yes UNo oYes CINo 4 Are waters deposits? discharge points free of and any receiving sediment No ❑Yes ❑Yes CINo 5 Are protected? storm drain inlets properly ❑Yes No ❑Na ❑Yes 6 Is sediment the the street? construction from exit being tracked preventing into CINo LiYes oYes CINo 7 Is collected dumpsters? trash/litter from work areas and placed in covered ❑Yes CINo ❑Yes LNo Spirit Environmental, LLC 18350.OOA June 2018 5-6 Outrigger DJ Operating LLC Construction General Permit Storm Water Management Plan Inspections BMP/activity Implemented? Maintenance Required? Corrective Needed Action and Notes 8 Are vehicle and equipment fueling, ❑Yes No CIYes No cleaning, free deleterious and of spills, material? maintenance leaks, areas or any other 9 Are materials that are potential a Yes a No oYes ❑ No stormwater inside or contaminants under cover? stored 10 Are non-stormwater discharges LiYes UNo oYes ❑No (e.g., properly wash controlled? water, dewatering) 11 (Other) ❑Yes l:11No oYes ❑No Non -Compliance Describe any incidents of non-compliance not described above: Name: Title: Signature: Date: Spirit Environmental, LLC 18350.00A June 2018 5-7 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Inspections 5.2 Corrective Action Log BMPs will be designed to retain sediment at each site to the extent practicable. When a BMP is not performing as intended, it will be repaired or replaced as necessary. A corrective action is provided below to track repairing and replacing BMPs. As required by the CGP this log includes a description of the corrective action, dates corrective action(s) were taken, and measures taken to prevent future violations. Following completion of the corrective action log, the operator should assess whether the SWMP needs to be updated to include the changes made at the site. Spirit Environmental, LLC 18350.OOA June 2018 5-8 Outrigger DJ Operating LLC Construction General Permit Storm Water Management Plan Inspections Corrective Action Log Inspection Date Inspector Name(s) BMP Description Deficiency of Corrective/Preventative (including date/responsible Action person) Needed planned Taken/Responsible Date Action Person Spirit Environmental, LLC 18350.00A June 2018 5-9 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Reporting 6.0 Reporting No scheduled reporting requirements are included in this permit; however, CDPHE reserves the right to request that a copy of the SWMP and inspection reports be submitted for their review. This permit does not relieve the permittee of the reporting requirements of 40 Code of Federal Regulation ("CFR") 110, 40 CFR 117 or 40 CFR 302. A discharge of hazardous material must be handled in accordance with the CDPHE's Noncompliance Notification Requirements (please refer to Part I I .A.3 of the CGP in addition to the information below). Noncompliance Notification Requirements The operator shall report the following instances of noncompliance: 1) Any noncompliance which may endanger health or the environment; 2) Any spill or discharge of hazardous substances or oil which may cause pollution of the waters of the state. 3) Any discharge of stormwater which may cause an exceedance of a water quality standard. For all instances of noncompliance based on environmental hazards and chemical spills and releases, information must be provided orally to the CDPHE's spill reporting line (24 -hour number for environmental hazards and chemical spills and releases: 1-877-518-5608) within 24 hours from the time the operator becomes aware of the release. For all other instances of noncompliance as defined in the CGP, information must be provided orally to the Water Quality Control Division within 24 hours from the time the permittee becomes aware of the circumstances. For instances of noncompliance identified below, a written submission must be provided within five (5) calendar days of the time the operator becomes aware of the circumstances. The written submission will contain a description of: 1) The noncompliance and its cause; Spirit Environmental, LLC 18350.OOA June 2018 6-1 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Reporting 2) The period of noncompliance, including exact dates and times, and if the noncompliance has not been corrected, the anticipated time it is expected to continue; 3) Steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance. Should the operator need to submit additional relevant facts in the permit application, or submitted incorrect information in the permit application or in a report to the CDPHE, or if relevant new information becomes available, the permittee shall promptly submit the relevant information or any additional information needed to correct any erroneous information previously submitted. Spirit Environmental, LLC 18350.00A June 2018 6-2 Outrigger DJ Operating LLC Construction General Permit Storm Water Management Plan Training 7.0 Training 7.1 Training Record Log Proper operation and maintenance of BMP includes effective operator staffing and training. The following log will be used to record training activities. Training Record Log Topics Covered: DATE NAME COMPANY SIGNATURE Spirit Environmental, LLC 18350.00A June 2018 7-1 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Attachments and Site -Specific Information 8.0 Attachments and Site -Specific Information The following information is included in this section: 1. CDPS General Permit COR-030000 2. Application 3. SWMP Records 4. Makena Gas Plant 5. Koki Compressor Station 6. White Rock Crude Terminal Spirit Environmental, LLC 18350.OOA June 2018 8-1 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Attachments and Site -Specific Information Attachment 1 CDPS General Permit COR-030000 Spirit Environmental, LLC 18350.OOA June 2018 8-2 Page 2 of 22 Permit No. COR-03 0000 CDPS GENERAL PERMIT STORMWATER DISCHARGES ASSOCIATED WITH CONSTRUCTION ACTIVITY AUTHORIZATION TO DISCHARGE UNDER THE COLORADO DISCHARGE PERMIT SYSTEM In compliance with the provisions of the Colorado Water Quality Control Act, (25-8-101 et seq., CRS, 1973 as amended) and the Federal Water Pollution Control Act, as amended (33 U.S.C. 1251 et seq.; the "Act"), this permit authorizes the discharge of stormwater associated with construction activities (and specific allowable non-stormwater discharges in accordance with Part I.D.3 of the permit) certified under this permit, from those locations specified throughout the State of Colorado to specified waters of the State. Such discharges shall be in accordance with the conditions of this permit. This permit specifically authorizes the facility listed on page 1 of this permit to discharge, as of this date, in accordance with permit requirements and conditions set forth in Parts I and II hereof. All discharges authorized herein shall be consistent with the terms and conditions of this permit. This permit and the authorization to discharge shall expire at midnight, June 30, 2012. Issued and Signed this 31st day of May, 2007 COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT adzeda4 Janet S. Kieler Permits Section Manager Water Quality Control Division SIGNED AND ISSUED MAY 31, 2007 EFFECTIVE JULY 1, 2007 ADMINISTRATIVELY CONTINUED EFFECTIVE JULY 1, 2012 TABLE OF CONTENTS PART I A. COVERAGE UNDER THIS PERMIT .. 1 Authority to Discharge a) Applicable Sections b) Oil and Gas Construction 2. Definitions Permit Coverage Without Application .— Qualifying Local Programs a) Applicable Sections b) Local Agency Authority c) Permit Coverage Termination d) Compliance with Qualifying Local Program e) Full Permit Applicability 4. Application, Due Dates ........ a) Application Due Dates b) Summary of Application 5. Permit Certification Procedures a) Request for Additional Information b) Automatic Coverage c) Individual Permit Required d) General vs. Individual Permit Coverage e) Local Agency Authority 6. Inactivation Notice 7. Transfer of Permit 8. Reassignment of Permit 9. Sale of Residence to Homeowners .. 10. Permit Expiration Date 11. Individual Permit Criteria ST RMWATER MANAGEMENT PLAN — GENERAL REQUIREMENTS STORMWATER MA TAG EMEN T PLAN — CONTENTS 1. Site Description 2. Site Map 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 6 6 6 6 7 7 3. Stormwater Management Controls a) SWMP Administrator b) Identification of Potential Pollutant Sources c) Best Management Practices (BMPs) for Stormwater Pollution Prevention 4. Final Stabilization and Long-term Stormwater Management 9 5. Inspection and Maintenance , 10 D. TERMS AND CONDITIONS 10 1. General. Limitations 10 2. BMP Implementation and Design Standards 10 3. Prohibition of Non-Stormwater Discharges 11 4. Releases in Excess of Reportable Quantities 11 5, SWMP Requirements 11 a) SWMP Preparation and Implementation 11 b) SWMP Retention Requirements 11 c) SWMP Review/Changes 11 d) Responsive SWMP Changes 12 6. Inspections 12 a) Minimum Inspection Schedule..12 b) Inspection Requirements 13 c) Required Actions Following Site Inspections 13 7. BMP Maintenance 13 8. Replacement and Failed BMPs 14 9. Reporting 14 7 8 8 8 8 -2a - TABLE OF CONTENTS (cant.) 10. SWMP Availability 14 11, Total Maximum Daily Load (TMDL).14 E. ADDITIONAL DEFINITIONS 15 GENERAL QUIREMEN TS . 16 1. Signatory Requirements 16 2. Retention of Records 16 16 3. Monitoring PART II A. MANAGEMENT REQUIREMENTS 1. Amending a Permit Certification 2. Special Notifications - Definitions 3. Noncompliance Notification 4. Submission of Incorrect or Incomplete Information 5. Bypass . Upsets 7. Removed Substances 8. Minimization of Adverse Impact. 9. Reduction, Loss, or Failure of Stormwater Controls 10. Proper Operation and Maintenance 17 17 17 17 18 18 18 18 18 19 19 19 RESPONSIBILITIES 1. Inspections and Right to Entry 19 2. Duty to Provide Information 19 3, Transfer of Ownership or Control 19 4. Modification, Suspension, or Revocation of Permit By Division . . 20 5. Permit Violations.., 21 6. Legal Responsibi lities 21 7. S everability 21 8. Renewal Application 21 9. Confidentiality , 21 10. Fees 21 11. Requiring an Individual CDPS Permit 22 PART I Permit - Page 3 Permit No. COR-03 0000 PART I A. COVERAGE UNDER THIS PERMIT L Authority to Discharge Under this permit, facilities are granted authorization to discharge stormwater associated with construction activities into waters of the state of Colorado. This permit also authorizes the discharge of specific allowable non-stormwater discharges, in accordance with Part I.D.3 of the permit, which includes discharges to the ground. This includes stormwater discharges from areas that are dedicated to producing earthen materials, such as soils, sand and gravel, for use at a single construction site (i.e., borrow or fill areas). This permit also authorizes stormwater discharges from dedicated asphalt batch plants and dedicated concrete batch plants. (Coverage under the construction site permit is not required for batch plants if they have alternate CDPS permit coverage.) This permit does not authorize the discharge of mine water or process water from such areas. a) Applicable Sections: In accordance with Part I.A.3 of this permit, some parts of this permit do not apply to sites covered under a Qualifying Local Program, as defined in 1.A.2.d. For sites not covered by a Qualifying Local Program, all parts of the permit apply except Part LA.3. The permittee will be responsible for determining and then complying with the applicable sections. b ) Oil and Gas Construction: Stormwater discharges associated with construction activities directly related to oil and gas exploration, production, processing, and treatment operations or transmission facilities are regulated under the Colorado Discharge Permit System Regulations (5CCR 1002-61), and require coverage under this permit in accordance with that regulation. However, references in this permit to specific authority under the Federal Clean Water Act (CWA) do not apply to stormwater discharges associated with these oil and gas related construction activities, to the extent that the references are limited by the federal Energy Policy Act of 2005. . Definitions a) Stormwater: Stormwater is precipitation -induced surface runoff b) Construction activity: Construction activity refers to ground surface disturbing activities, which include, but are not limited to, clearing, grading, excavation, demolition, installation of new or improved haul roads and access roads, staging areas, stockpiling of fill materials, and borrow areas. Construction does not include routine maintenance to maintain original line and grade, hydraulic capacity, or original purpose of the facility. c) Small construction activity: Stormwater discharge associated with small construction activity means the discharge of stormwater from construction activities that result in land disturbance of equal to or greater than one acre and less than five acres. Small construction activity also includes the disturbance of less than one acre of total land area that is part of a larger common plan of development or sale, if the larger common plan will ultimately disturb equal to or greater than one and less than five acres. d) Qualifying Local Program: This permit includes conditions that incorporate qualifying local erosion and sediment control program (Qualifying Local Program) requirements by reference. A Qualifying Local Program is a municipal stormwater program for stormwater discharges associated with small construction activity that has been formally approved by the Division. Other Definitions: Definitions of additional terms can be found in Part I.E. of this permit. 3. Permit Coverage Without Application — for small construction activities under a Qualifying Local Program only If a small construction site is within the jurisdiction of a Qualifying Local Program, the operator of the construction activity is authorized to discharge stormwater associated with small construction activity under this general permit without the submittal of an application to the Division. a) Applicable Sections: For sites covered by a Qualifying Local Program, only Parts 1.A.1, 1.A.2, LA.3, I.D.1, I.D.2, I.D.3, I.D.4, 1.D.7, I.D.8, I.D.11, i.E and Part II of this permit, with the exception of Parts II.A.1, II.B.3, II.B.8, and II.B10, 10, apply. PART I Permit - Page 4 Permit No. COR-03 0000 A. COVERAGE UNDER THIS PERMIT (cont.) b) Local Agency Authority: This permit does not pre-empt or supersede the authority of local agencies to prohibit, restrict, or control discharges of stormwater to storm drain systems or other water courses within their jurisdiction. c) Permit Coverage Termination: When a site under a Qualifying Local Program has been finally stabilized, coverage under this permit is automatically terminated. d) Compliance with Qualifying Local Program: A construction site operator that has authorization to discharge under this permit under Part I.A.3 shall comply with the requirements of the Qualifying Local Program with jurisdiction over the site. Full Permit Applicability: The Division may require any operator within the jurisdiction of a Qualifying Local Program covered under this permit to apply for and obtain coverage under the full requirements of this permit. The operator must be notified in writing that an application for full coverage is required. When a permit certification under this permit is issued to an operator that would otherwise be covered under Part I.A.3 of this permit, the full requirements of this permit replace the requirements as per Part I.A.3 of this permit, upon the effective date of the permit certification. A site brought under the full requirements of this permit must still comply with local stormwater management requirements, policies or guidelines as required by Part 1.D.1.g of this permit. 4. Application, Due Dates a) Application .Due Dates: At least ten calendar days prior to the commencement of construction activities, the applicant shall submit an application form as provided by the Division, with a certification that the Stormwater Management Plan (SWMP) is complete. One original completed discharge permit application shall be submitted, by mail or hand delivery, to: Colorado Department of Public Health and Environment Water Quality Control Division WQCD-Permits-B2 4300 Cherry Creek Drive South Denver, Colorado 80246-1530 Summary of Application: The application requires, at a minimum, the following: 1) The applicant's company name; address; telephone number; and email address (if available); whether the applicant is the owner, developer, or contractor; and local contact information; 2) Project name, address, county and location of the construction site, including the latitude andlongitude to the nearest 15 seconds of the approximate center of the construction activity; 3) Legal description or map of the construction site; 4) Estimates of: the total area of the site, the area of the site that is expected to be disturbed, and the total area of the larger common plan of development or sale to undergo disturbance; 5) The nature of the construction activity; 6) The anticipated start date and final stabilization date for the project; 7) The name of the receiving water(s), or the municipal separate storm sewer system and the ultimate (i.e., named) receiving water(s); 8) Certification that the SWMP for the construction site is complete (see Part I.C. below); and 9) The signature of the applicant, signed in accordance with Part I.F.1 of this permit. 5. Permit Certification Procedures If this general permit is appropriate for the applicant's operation, then a certification will be developed and the applicant will be authorized to discharge stormwater under this general permit. a) Request for Additional Information: The Division shall have up to ten calendar days after receipt of the above information to request additional data and/or deny the authorization for any particular discharge. Upon receipt of additional information, the Division shall have an additional ten calendar days to issue or deny authorization for the particular discharge. (Notification of denial shall be by letter, in cases where coverage under an alternate general permit or an individual permit is required, instead of coverage under this permit.) PART I Permit - Page 5 Permit No. COR-03 0000 A. COVERAGE UNDER THIS PERMIT (cont.) b) Automatic Coverage: If the applicant does not receive a request for additional information or a notification of denial from the Division dated within ten calendar days of receipt of the application by the Division, authorization to discharge in accordance with the conditions of this permit shall be deemed granted. c) Individual Permit Required: If, after evaluation of the application (or additional information, such as the SWMP), it is found that this general permit is not appropriate for the operation, then the application will be processed as one for an individual permit. The applicant will be notified of the Division's decision to deny certification under this general permit. For an individual permit, additional information may be requested, and 180 days may be required to process the application and issue the permit. At the Division's discretion, temporary coverage under this general permit may be allowed until the individual permit goes into effect. d) General vs. Individual Permit Coverage: Any permittee authorized by this permit may request to be excluded from the coverage of this permit by applying for an individual CDPS permit. The permittee shall submit an individual application, with reasons supporting the request, to the Division at least 180 days prior to any discharge. e) Local Agency Authority: This permit does not pre-empt or supersede the authority of local agencies to prohibit, restrict, or control discharges of stormwater to storm drain systems or other water courses within their jurisdiction. 6. Inactivation Notice When a site has been finally stabilized in accordance with the SWMP, the permittee must submit an Inactivation Notice form that is signed in accordance with Part I.F.I. of this permit. The Inactivation Notice form is available from the Division and includes: a) Permit certification number; b) The permittee's name, address, telephone number; c) Name, location, and county for the construction site for which the inactivation notice is being submitted; and d) Certification that the site has been finally stabilized, and a description of the final stabilization method(s). Transfer of Permit When responsibility for stormwater discharges at a construction site changes from one entity to another, the permittee shall submit a completed. Notice of Transfer and Acceptance of Terms form that is signed in accordance with Part I.F.1. of this permit. The Notice of Transfer form is available from the Division and includes: a) Permit certification number; b) Name, location, and county for the construction site for which the Notice of Transfer is being submitted; c) Identifying information for the new permittee; d) Identifying information for the current permittee; and. e) Effective date of transfer. If the new responsible party will not complete the transfer form, the permit may be inactivated upon written request to the Division and completion of the Inactivation Notice if the permittee has no legal responsibility, through ownership or contract, for the construction activities at the site. in this case, the new owner or operator would be required to obtain permit coverage separately. 8. Reassignment of Permit When a permittee no longer has control of a specific portion of a permitted site, and wishes to transfer coverage of that portion of the site to a second party, the permittee shall submit a completed Notice of Reassignment of Permit Coverage form that is signed in accordance with Part I.F.1. of this permit. The Notice of Reassignment of Permit Coverage form is available from the Division and includes: a) Current permit certification number; b) Identifying information and certification as required by Part I.A.4.b for the new permittee; c) Identifying information for the current permittee, revised site information and certification for reassignment; and d) Effective date of reassignment. PART I Permit - Page 6 Permit No. COR-030000 A. COVERAGE UNDER. THIS PERMIT (cont.) If the new responsible party will not complete the reassignment form, the applicable portion of the permitted site may be removed from permit coverage upon written request to the Division if the permittee has no legal responsibility, through ownership or contract, for the construction activities at the portion of the site. In this case, the new owner or operator would be required to obtain permit coverage separately. 9. Sale of Residence to Homeowners For residential construction only, when a residential lot has been conveyed to a homeowner and all criteria in paragraphs a through e, below, are met, coverage under this permit is no longer required and the conveyed lot may be removed from coverage under the permittee's certification. At such time, the permittee is no longer responsible for meeting the terms and conditions of this permit for the conveyed lot, including the requirementto transfer or reassign permit coverage. The permittee remains responsible for inactivation of the original certification. a) The lot has been soldto the homeowner(s) for private residential use; b) the lot is less than one acre of disturbed area; c) all construction activity conducted by the permittee on the lot is completed; d) a certificate of occupancy (or equivalent) has been awarded to the home owner; and e) the SWMP has been amended to indicate the lot is no longer covered by permit. Lots not meeting all of the above criteria require continued permit coverage. However, this permit coverage may be transferred (Part I.A.?, above) or reassigned (Part I.A..5, above) to a new owner or operator. 10. Permit Expiration Date Authorization to discharge under this general permit shall expire on June 30, 2012. The Division must evaluate and reissue this general permit at least once every five years and must recertify the permittee's authority to discharge under the general permit at such time. Therefore, a permittee desiring continued coverage under the general permit must reapply by March 31, 2012. The Division will initiate the renewal process; however, it is ultimately the permittee's responsibility to ensure that the renewal is submitted. The Division will determine if the permittee may continue to operate under the terms of the general permit. An individual permit may be required for any facility not reauthorized to discharge under the reissued general permit. 11. Individual Permit Criteria Various criteriacan be used in evaluating whether or not an individual (or alternate general) permit is required instead of this general permit. This information may come from the application, SWMP, or additional information as requested by the Division, and includes, but is not limited to, the following: a) the quality of the receiving waters (i.e., the presence of downstream drinking water intakes or a high quality fishery, or for preservation of high quality water); b) the size of the construction site; c) evidence of noncompliance under a previous permit for the operation;. d) the use of chemicals within the stormwater system; or e) discharges of pollutants of concern to waters for which there is an established. Total Maximum Daily Load (TMDL). In addition, an individual permit may be required when the Division has shown or has reason to suspect that the stormwater discharge may contribute to a violation of a water quality standard. B. STORMWATER MANAGEMENT PLAN (SWMP) — GENERAL REQUIREMENTS 1. A SWMP shall be developed for each facility covered by this permit. The SWMP shall be prepared in accordance with good engineering, hydrologic and pollution control practices. (The SWMP need not be prepared by a registered engineer.) PART I Permit - Page 7 Permit No. COR-03 0000 STORMWATER MANAGEMENT PLAN (SWMP) — GENERAL REQUIREMENTS (cont..) 2. The SWMP shall: a} Identify all potential sources of pollution which may reasonably be expected to affect the quality of stormwater discharges associated with construction activity from the facility; b) Describe the practices to be used to reduce the pollutants in stormwater discharges associated with construction activity at the facility; and ensure the practices are selected and described in accordance with good engineering practices, including the installation, implementation and maintenance requirements; and c) Be properly prepared, and updated in accordance with Part 1.D.5.c, to ensure compliance with the terms and conditions of this permit. 3. Facilities must implement the provisions of the SWMP as written and updated, from commencement of construction activity until final stabilization is complete, as a condition of this permit. The Division reserves the right to review the SWMP, and to require the permittee to develop and implement additional measures to prevent and control pollution as needed. 4. The SWMP may reflect requirements for Spill Prevention Control and Countermeasure (SPCC) plans under section 311 of the CWA, or Best Management Practices (BMPs) Programs otherwise required by a separate CDPS permit, and may incorporate any part of such plans into the SWMP by reference, provided that the relevant sections of such plans are available as part of the SWMP consistent with Part I.D.5.b. 5. For any sites with permit coverage before June 30, 2007, the permittee's SMWP must meet the new SWMP requirements as summarized in Section 11.1 of the rationale. Any needed changes must be made by October 1, 2007. C. STORMWATER MANAGEMENT PLAN (SWMP) — CONTENTS The SWMP shall include the following items, at a minimum. 1. Site Description. The SWMP shall clearly describe the construction activity, to include: a) The nature of the construction activity at the site. b) The proposed sequence for major activities. c) Estimates of the total area of the site, and the area and location expectedto be disturbed by clearing, excavation, grading, or other construction activities. d) A summary of any existing data used in the development of the site construction plans or SWMP that describe the soil or existing potential for soil erosion. e) A description of the existing vegetation at the site and an estimate of the percent vegetative ground cover. f} The location and description of all potential pollution sources, including ground surface disturbing activities (see Part I.A.2.b), vehicle fueling, storage of fertilizers or chemicals, etc. g) The location and description of any anticipated allowable sources of non-stormwater discharge at the site, e.g., uncontaminated springs, landscape irrigation return flow, construction dewatering, and concrete washout. h) The name of the receiving water(s) and the size, type and location of any outfall(s). If the stormwater discharge is to a municipal separate storm sewer system, the name of that system, the location of the storm sewer discharge, and the ultimate receiving water(s). 2. Site Map. The SWMP shall include a legible site map(s), showing the entire site, identifying: a) construction site boundaries; b) all areas of ground surface disturbance; c) areas of cut and fill; d) areas used for storage of building materials, equipment, soil, or waste; e) locations of dedicated asphalt or concrete batch plants; f} locations of all structural BMPs; g) locations of non-structural BMPs as applicable; and h) locations of springs, streams, wetlands and other surface waters. PART 1 Permit - Page 8 Permit No. COR-03 0000 STORMWATER MANAGEMENT PLAN (SWMP) — CONTENTS (cont.) 3. Stormwater Management Controls. The SWMP must include a description of all stormwater management controls that will be implemented as part of the construction activity to control pollutants in stormwater discharges. The appropriateness and priorities of stormwater management controls in the SWMP shall reflect the potential pollutant sources identified at the facility. The description of stormwater management controls shall address the following components, at a minimum: a) SWMP Administrator - The SWMP shall identify a specific individual(s), position or title who is responsible for developing, implementing, maintaining, and revising the SWMP. The activities and responsibilities of the administrator shall address all aspects of the facility's SWMP. b Identification of Potential Pollutant Sources - All potential pollutant sources, including materials and activities, at a site must be evaluated for the potential to contribute pollutants to stormwater discharges. The SWMP shall identify and describe those sources determined to have the potential to contribute pollutants to stormwater discharges, and the sources must be controlled through BMP selection and implementation, as required in paragraph (c), below. At a minimum, each of the following sources and activities shall be evaluated for the potential to contribute pollutants to stormwater discharges, and identified in the SWMP if found to have such potential: 1) all disturbed and stored soils; 2) vehicle tracking of sediments; 3) management of contaminated soils; 4) loading and unloading operations; 5) outdoor storage activities (building materials, fertilizers, chemicals, etc.); 6) vehicle and equipment maintenance and fueling; 7) significant dust or particulate generating processes; 8) routine maintenance activities involving fertilizers, pesticides, detergents, fuels, solvents, oils, etc.; 9) on -site waste management practices (waste piles, liquid wastes, dumpsters, etc.); 10) concrete truck/equipment washing, including the concrete truck chute and associated fixtures and equipment; 11) dedicated asphalt and concrete batch plants; 12) non -industrial waste sources such as worker trash and portable toilets; and 13) other areas or procedures where potential spills can occur. c) Best Management Practices (BMPs) for Stormwater Pollution Prevention - The SWMP shall identify and describe appropriate BMPs, including, but not limited to, those required by paragraphs 1 through 8 below, that will be implementedat the facility to reduce the potential of the sources identified in Part i.C.3.b to contribute pollutants to stormwater discharges. The SWMP shall clearly describe the installation and implementation specifications for each BMP identified in the SWMP to ensure proper implementation, operation and maintenance of the BMP. 1) Structural Practices for Erosion and Sediment Control. The SWMP shall clearly describe and locate all structural practices implemented at the site to minimize erosion and sediment transport. Practices may include, but are not limited to: straw bales, wattles/sediment control logs, silt fences, earth dikes, drainage swales, sediment traps, subsurface drains, pipe slope drains, inlet protection, outlet protection, gabions, and temporary or permanent sediment basins. 2) Non -Structural Practices for Erosion and Sediment Control. The SWMP shall clearly describe and locate, as applicable, all non-structural practices implemented at the site to minimize erosion and sediment transport. Description must include interim and permanent stabilization practices, and site -specific scheduling for implementation of the practices. The SWMP should include practices to ensure that existing vegetation is preserved where possible. Non-structural practices may include, but are not limited to: temporary vegetation, permanent vegetation, mulching, geotextiles, sod stabilization, slope roughening, vegetative buffer strips, protection of trees, and preservation of mature vegetation. PART I Permit - Page 9 Permit No. COR-03 0000 STORMWATER MANAGEMENT PLAN (SWMP) — CONTENTS (cont.) 3) Phased BMP Implementation. The SWMP shall clearly describe the relationship between the phases of construction, and the implementation and maintenance of both structural and non-structural stormwater management controls. The SWMP must identify the stormwater management controls to be implemented during the project phases, which can include, but are not limited to, clearing and grubbing; road construction; utility and infrastructure installation; vertical construction; final grading; and final stabilization. 4) Materials Handling and Spill Prevention. The SWMP shall clearly describe and locate all practices implemented at the site to minimize impacts from procedures or significant materials (see definitions at Part I.E.) that could contribute pollutants to runoff. Such procedures or significant materials could include: exposed storage of building materials; paints and solvents; fertilizers or chemicals; waste material; and equipment maintenance or fueling procedures. Areas or procedures where potential spills can occur must have spill prevention and response procedures identified in the SWMP. 5) Dedicated Concrete or Asphalt Batch Plants. The SWMP shall clearly describe and locate all practices implemented at the site to control stormwater pollution from dedicated concrete batch plants or dedicated asphalt batch plants covered by this certification. 6) Vehicle Tracking Control. The SWMP shall clearly describe and locate all practices implemented at the site to control potential sediment discharges from vehicle tracking. Practices must be implemented for all areas of potential vehicle tracking, and can include: minimizing site access; street sweeping or scraping; tracking pads; graveled parking areas; requiring that vehicles stay on paved areas on -site; wash racks; contractor education; and/or sediment control BMPs, etc. 7) Waste Management and Disposal, Including Concrete Washout. i) The SWMP shall clearly describe and locate the practices implemented at the site to control stormwater pollution from all construction site wastes (liquid and solid), including concrete washout activities. ii) The practices used for concrete washout must ensure that these activities do not result in the contribution of pollutants associated with the washing activity to stormwater runoff iii) Part I.D.3.c of the permit authorizes the conditional discharge of concrete washout water to the ground. The SWMP shall clearly describe and locate the practices to be used that will ensure that no washout water from concrete washout activities is discharged from the site as surface runoff or to surface waters. Groundwater and. Stormwater Dewatering. i) The SWMP shall clearly describe and locate the practices implemented at the site to control stormwater pollution from the dewatering of groundwater or stormwater from excavations, wells, etc. ii) Part I.D.3.d of the permit authorizes the conditional discharge of construction dewatering to the ground. For any construction dewatering of groundwater not authorized under a separate CDPS discharge permit, the SWMP shall clearly describe and locate the practices to be used that will ensure that no groundwater from construction dewatering is discharged from the site as surface runoff or to surface waters. 4. Final Stabilization and Long-term Stormwater Management a) The SWMP shall clearly describe the practices used to achieve final stabilization of all disturbed areas at the site, and any planned practices to control pollutants in stormwater discharges that will occur after construction operations have been completed at the site. b Final stabilization practices for obtaining a vegetative cover should include, as appropriate: seed mix selection and application methods; soil preparation and amendments; soil stabilization practices (e.g., crimped straw, hydro mulch or rolled erosion control products); and appropriate sediment control BMPs as needed until final stabilization is achieved; etc. PART I Permit - Page 10 Permit No. COR-03 0000 STORMWATER MANAGEMENT PLAN (SWMP) — CONTENTS (cont.) c) Final stabilization is reached when all ground surface disturbing activities at the site have been completed, and uniform vegetative cover has been established with an individual plant density of at least 70 percent of pre - disturbance levels, or equivalent permanent, physical erosion reduction methods have been employed. The Division may, after consultation with the permittee and upon good cause, amend the final stabilization criteria in this section for specific operations. 5. Inspection and Maintenance Part LD.6 of the permit includes requirements for site inspections. Part 1.D.7 of the permit includes requirements for BMP maintenance. The SWMP shall clearly describe the inspection and maintenance procedures implemented at the site to maintain all erosion and sediment control practices and other protective practices identified in the SWMP, in good and effective operating condition. D. TERMS AND CONDITIONS 1. General Limitations The following limitations shall apply to all discharges covered by this permit: a) Stormwater discharges from construction activities shall not cause, have the reasonable potential to cause, or measurably contribute to an exceedance of any water quality standard, including narrative standards for water quality. Concrete washout water shall not be discharged to state surface waters or to storm sewer systems. On -site permanent disposal of concrete washout waste is not authorized by this permit. Discharge to the ground of concrete washout waste that will subsequently be disposed of off -site is authorizedby this permit. See Part I.D.3.c of the permit. c) Bulk storage structures for petroleum products and any other chemicals shall have secondary containment or equivalent adequate protection so as to contain all spills and prevent any spilled material from entering State waters. No chemicals are to be added to the discharge unless permission for the use of a specific chemical is granted by the Division. In granting the use of such chemicals, special conditions and monitoring may be addressed by separate correspondence. e) The Division reserves the right to require sampling and testing, on a case -by -case basis, in the event that there is reason to suspect that compliance with the SWMP is a problem, or to measure the effectiveness of the BMPs in removing pollutants in the effluent. Such monitoring may include Whole Effluent Toxicity testing. U g) All site wastes must be properly managed to prevent potential pollution of State waters. This permit does not authorize on -site waste disposal. All dischargers must comply with the lawful requirements of federal agencies, municipalities, counties, drainage districts and other local agencies regarding any discharges of stormwater to storm drain systems or other water courses under their jurisdiction, including applicable requirements in municipal stormwater management programs developed to comply with CDPS permits. Dischargers must comply with local stormwater management requirements, policies or guidelines including erosion and sediment control. 2. BMP Implementation and Design Standards Facilities must select, install, implement, and maintain appropriate BMPs, following good engineering, hydrologic and pollution control practices. BMPs implemented at the site must be adequately designed to provide control for all potential pollutant sources associated with construction activity to prevent pollution or degradation of State waters. PART I Permit - Page 11 Permit No. COR-03 0000 D. TERMS AND CONDITIONS (cont.) 3. Prohibition of Non-Stormwater Discharges a} Except as provided in paragraphs b, c, and d below, all discharges covered by this permit shall be composed entirely of stormwater associated with construction activity. Discharges of material other than stormwater must be addressed in a separate CDPS permit issued for that discharge. Discharges from the following sources that are combined with stormwater discharges associated with construction activity may be authorized by this permit, provided that the non-stormwater component of the discharge is identified in the SWMP (see Part I.C.1.g of this permit): - emergency fire fighting activities - landscape irrigation return flow - uncontaminated springs c) Discharges to the ground of concrete washout water from washing of tools and concrete mixer chutes may be authorized by this permit, provided that: 1) the source is identified in the SWMP; 2) BMPs are included in the SWMP in accordance with Part I.C.3(c)(7) and to prevent pollution of groundwater in violation of Part I.D.1. a; and 3) these discharges do not leave the site as surface runoff or to surface waters Discharges to the ground of water from construction dewatering activities may be authorized by this permit, provided that: 1) the source is groundwater and/or groundwater combined with stormwater that does not contain pollutants in concentrations exceeding the State groundwater standards in Regulations 5 CCR 1002-41 and 42; 2) the source is identified in the SWMP; 3) BMPs are included in the SWMP, as required by Part I. C.3 (c)(8); and 4) these discharges do not leave the site as surface runoff or to surface waters. Discharges to the ground from construction dewatering activities that do not meet the above criteria must be covered under a separate CDPS discharge permit. Contaminated groundwater requiring coverage under a separate CDPS discharge permit may include groundwater contaminated with pollutants from a landfill, mining activity, industrial pollutant plume, underground storage tank, or other source. 4. Releases in Excess of Reportable Quantities This permit does not relieve the permittee of the reporting requirements of 40 CFR 110, 40 CFR 117 or 40 CFR 302. Any discharge of hazardous material must be handled in accordance with the Division's Noncompliance Notification Requirements (see Part IIA.3 of the permit). 5. SWMP Requirements a) SWMP Preparation and Implementation: The SWMP shall be prepared prior to applying for coverage under the general permit, and certification of its completion submitted with the application. The SWMP shall be implemented prior to commencement of construction activities. The plan shall be updated as appropriate (see paragraph c, below), below). SWMP provisions shall be implemented until expiration or inactivation of permit coverage. b) SWMP Retention Requirements: A copy of the SWMP must be retained on site unless another location, specified by the permittee, is approved by the Division. c) SWMP Review/Changes: The permittee shall amend the SWMP: 1) when there is a change in design, construction, operation, or maintenance of the site, which would require the implementation of new or revised BMPs; or 2) if the SWMP proves to be ineffective in achieving the general objectives of controlling pollutants in stormwater discharges associated with construction activity; or PART I Permit - Page 12 Permit No. COR-03 0000 D. TERMS AND CONDITIONS (cont.) 3) when BMPs are no longer necessary and are removed. SWMP changes shall be made prior to changes in the site conditions, except as allowed for in paragraph d, below. SWMP revisions may include, but are not limited to: potential pollutant source identification; selection of appropriate BMPs for site conditions; BMP maintenance procedures; and interim and final stabilization practices. The SWMP changes may include a schedule for further BMP design and implementation, provided that, if any interim BMPs are needed to comply with the permit, they are also included in the SWMP and implemented during the interim period. d) Responsive SWMP Changes: SWMP changes addressing BMP installation and/or implementation are often required to be made in response to changing conditions, or when current BMPs are determined ineffective. The majority of SWMP revisions to address these changes can be made immediately with quick in -the -field revisions to the SWMP. In the less common scenario where more complex development of materials to modify the SWMP is necessary, SWMP revisions shall be made in accordance with the following requirements: 1) the SWMP shall be revised as soon as practicable, but in no case more than 72 hours after the change(s) in BMP installation and/or implementation occur at the site, and 2) a notation must be included in the SWMP prior to the site change(s) that includes the time and date of the change(s) in the field, an identification of the BMP(s) removed or added, and the location(s) of those BMP(s). 6. Inspections Site inspections must be conducted in accordance with the following requirements and minimum schedules. The required minimum inspection schedules do not reduce or eliminate the permittee's responsibility to implement and maintain BMPs in good and effective operational condition, and in accordance with the SWMP, which could require more frequent inspections. a) Minimum Inspection Schedule: The permittee shall, at a minimum, make a thorough inspection, in accordance with the requirements in I.D.6.b below, at least once every 14 calendar days. Also, post -storm event inspections must be conducted within 24 hours after the end of any precipitation or snowmelt event that causes surface erosion. Provided the timing is appropriate, the post -storm inspections may be used to fulfill the 14 -day routine inspection requirement. A more frequent inspection schedule than the minimum inspections described may be necessary, to ensure that BMPs continue to operate as needed to comply with the permit. The following conditional modifications to this Minimum Inspection Schedule are allowed: 1) Post -Storm Event Inspections at Temporarily Idle Sites - If no construction activities will occur following a storm event, post -storm event inspections shall be conducted prior to re -commencing construction activities, but no later than 72 hours following the storm event. The occurrence of any such delayed inspection must be documented in the inspection record. Routine inspections still must be conducted at least every 14 calendar days. 2) Inspections at Completed Sites/Areas — For sites or portions of sites that meet the following criteria, but final stabilization has not been achieved due to a vegetative cover that has not become established, the permittee shall make a thorough inspection of their stormwater management system at least once every month, and post - storm event inspections are not required. This reduced inspection schedule is only allowed if: i) all construction activities that will result in surface ground disturbance are completed; ii) all activities required for final stabilization, in accordance with the SWMP, have been completed, with the exception of the application of seed that has not occurred due to seasonal conditions or the necessity for additional seed application to augment previous efforts; and iii) the SWMP has been amended to indicate those areas that will be inspected in accordance with the reduced schedule allowed for in this paragraph. PART I Permit - Page 13 Permit No. COR-03 0000 D. TERMS AND CONDITIONS (cont.) 3) Winter Conditions Inspections Exclusion — Inspections are not required at sites where construction activities are temporarily halted, snow cover exists over the entire site for an extended period, and melting conditions posing a risk of surface erosion do not exist. This exception is applicable only during the period where melting conditions do not exist, and applies to the routine 14 -day and monthly inspections, as well as the post -storm - event inspections. The following information must be documented in the inspection record for use of this exclusion: dates when snow cover occurred, date when construction activities ceased, and date melting conditions began. Inspections, as described above, are required at all other times. When site conditions make the schedule required in this section impractical, the permittee may petition the Division to grant an alternate inspection schedule. b Inspection Requirements I.) Inspection Scope - The construction site perimeter, all disturbed areas, material and/or waste storage areas that are exposed to precipitation, discharge locations, and locations where vehicles access the site shall be inspected for evidence of, or the potential for, pollutants leaving the construction site boundaries, entering the stormwater drainage system, or discharging to state waters. All erosion and sediment control practices identified in the SWMP shall be evaluated to ensure that they are maintained and operating correctly. 2) Inspection Report/Records - The permittee shall keep a record of inspections. inspection reports must identify any incidents of non-compliance with the terms and conditions of this permit. Inspection records must be retained for three years from expiration or inactivation of permit coverage. At a minimum, the inspection report must include: i) The inspection date; ii) Name(s) and title(s) ofpersonnel making the inspection; iii) Location(s) of discharges of sediment or other pollutants from the site; iv) Location(s) of BMPs that need to be maintained; v) Location(s) of BMPs that failed to operate as designed or proved inadequate for a particular location; vi) Location(s) where additional BMPs are needed that were not in place at the time of inspection; vii) Deviations from the minimum inspection schedule as provided. in Part I.D.6.a above; vii) Description of corrective action for items iii, iv, v, and vi, above, dates corrective action(s) taken, and. measures taken to prevent future violations, including requisite changes to the SWMP, as necessary; and. viii) After adequate corrective action(s) has been taken, or where a report does not identify any incidents requiring corrective action, the report shall contain a signed statement indicating the site is in compliance with the permit to the best of the signer's knowledge and belief. c) Required Actions Following Site Inspections — Where site inspections note the need for BMP maintenance activities, BMPs must be maintained in accordance with the SWMP and. Part I.D.7 of the permit. Repair, replacement, or installation of new BMPs determined necessary during site inspections to address ineffective or inadequate BMPs must be conducted in accordance with Part i.D.8 of the permit. SWMP updates required as a result of deficiencies in the SWMP noted during site inspections shall be made in accordance with Part 1.D.5.c of the permit. 7. .AMP Maintenance All erosion and sediment control practices and other protective measures identified in the SWMP must be maintained in effective operating condition. Proper selection and installation of BMPs and implementation of comprehensive Inspection and Maintenance procedures, in accordance with the SWMP, should be adequate to meet this condition. BMPs that are not adequately maintained in accordance with good engineering, hydrologic and pollution control practices, including removal of collected sediment outside the acceptable tolerances of the BMPs, are considered to be no longer operating effectively and must be addressed in accordance with Part I.D.8, below. A specific timeline for implementing maintenance procedures is not included in this permit because BMP maintenance is expected to be proactive, not responsive. Observations resulting in BMP maintenance activities can be made during a site inspection, or during general observations of site conditions. PART I Permit - Page 14 Permit No. COR-03 0000 D. TERMS AND CONDITIONS (cont.) 8. Replacement and Failed BMPs Adequate site assessment must be performed as part of comprehensive Inspection and Maintenance procedures, to assess the adequacy of BMPs at the site, and the necessity of changes to those BMPs to ensure continued effective performance. Where site assessment results in the determination that new or replacement BMPs are necessary, the BMPs must be installed to ensure on -going implementation of BMPs as per Part 1112. Where BMPs have failed, resulting in noncompliance with Part I.D.2, they must be addressed as soon as possible, immediately in most cases, to minimize the discharge ofpollutants. When new BMPs are installed or BMPs are replaced, the SWMP must be updated in accordance with Part I.D.5(c). 9. Reporting No scheduled reporting requirements are included in this permit; however, the Division reserves the right to request that a copy of the inspection reports be submitted. 10. SWMP Availability A copy of the SWMP shall be provided upon request to the Division, EPA, or any local agency in charge of approving sediment and erosion plans, grading plans or stormwater management plans, and within the time frame specified in the request. If the SWMP is required to be submitted to any of these entities, it must include a signed certification in accordance with Part i.F.1 of the permit, certifying that the SWMP is complete and meets all permit requirements. All SWMPs requiredunder this permit are considered reports that shall be available to the public under Section 308(b) of the CWA and Section 61.5(4) of the Colorado Discharge Permit System Regulations. The permittee shall make plans available to members of the public upon request. However, the permittee may claim any portion of a SWMP as confidential in accordance with 40 CFR Part 2. 11. Total Maximum Daily Load (TMDL) If a TMDL has been approved for any waterbody into which the permittee discharges, and stormwater discharges associated with construction activity have been assigned a pollutant -specific Wasteload Allocation (WLA) under the TMDL, the Division will either: a) Ensure that the WLA is being implemented properly through alternative local requirements, such as by a municipal stormwater permit; or Notify the permittee of the WLA, and amend the permittee's certification to add specific BMPs and/or other requirements, as appropriate. The permittee may be required to do the following: 1) Under the permittee's SWMP, implement specific management practices based on requirements of the WLA, and evaluate whether the requirements are being met through implementation of existing stormwater BMPs or if additional BMPs are necessary. Document the calculations or other evidence that show that the requirements are expected to be met; and 2) If the evaluation shows that additional or modified BMPs are necessary, describe the type and schedule for the BMP additions/revisions. Discharge monitoring may also be required. The permittee may maintain coverage under the general permit provided they comply with the applicable requirements outlined above. The Division reserves the right to require individual or alternate general permit coverage. PART I Permit - Page 15 Permit No. COR.-03 0000 ADDITIONAL DEFINITIONS For the purposes of this permit: 1. Best Management Practices (BMPs): schedules of activities, prohibitions of practices, maintenance procedures, and other management practices to prevent or reduce the pollution of waters of the State. BMPs also include treatment requirements, operating procedures, pollution prevention, and practices to control site runoff, spillage or leaks, waste disposal, or drainage from material storage. 2. Dedicated asphalt plants and concrete plants: portable asphalt plants and concrete plants that are located on or adjacent to a construction site and that provide materials only to that specific construction site. 3. Final stabilization: when all ground surface disturbing activities at the site have been completed, and uniform vegetative cover has been established with an individual plant density of at least 70 percent of pre -disturbance levels, or equivalent permanent, physical erosion reduction methods have been employed. For purposes of this permit, establishment of a vegetative cover capable of providing erosion control equivalent to pre-existing conditions at the site will be considered final stabilization. 4. Municipal separate storm sewer system: a conveyance or system of conveyances (including: roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, or storm drains), owned or operated by a State, city, town, county, district, or other public body (created by state law), having jurisdiction over disposal of sewage, industrial waste, stormwater, or other wastes; designed or used for collecting or conveying stormwater. 5. Operator: the entity that has day-to-day supervision and control of activities occurring at the construction site. This can be the owner, the developer, the general contractor or the agent of one of these parties, in some circumstances. It is anticipated that at different phases of a construction project, different types ofparties may satisfy the definition of 'operator' and that the permit may be transferred as the roles change. 6. Outfall: a point source at the point where stormwater leaves the construction site and discharges to a receiving water or a stormwater collection system. 7. Part of a larger common plan of development or sale: a contiguous area where multiple separate and distinct construction activities may be taking place at different times on different schedules. Point source: any discernible, confinedand discrete conveyance from which pollutants are or may be discharged.. Point source discharges of stormwater result from structures which increase the imperviousness of the ground which acts to collect runoff, with runoff being conveyed along the resulting drainage or grading pattern. 9. Pollutant: dredged spoil, dirt, slurry, solid waste, incinerator residue, sewage, sewage sludge, garbage, trash, chemical waste, biological nutrient, biological material, radioactive material, heat, wrecked or discarded equipment, rock, sand, or any industrial, municipal or agricultural waste. 10. Process water: any water which, during manufacturing or processing, comes into contact with or results from the production of any raw material, intermediate product, finished product, by product or waste product. This definition includes mine drainage. 1 L Receiving Water: any classified stream segment (including tributaries) in the State of Colorado into which stormwater related to construction activities discharges. This definition includes all water courses, even if they are usually dry, such as borrow ditches, arroyos, and other unnamed waterways. 12. Significant Materials include, but are not limited to: raw materials; fuels; materials such as solvents, detergents, and plastic pellets; finished materials such as metallic products; raw materials used in food processing or production; hazardous substances designated under section 101(14) of CERCLA; any chemical the facility is required to report pursuant to section 313 of tide IIl of SARA; fertilizers; pesticides; and waste products such as ashes, slag and sludge that have the potential to be released with stormwater discharge. 13. Stormwater: precipitation -induced surface runoff. PART I Permit - Page 16 Permit No. COR-03 0000 F. GENERAL REQUIREMENTS L Signatory Requirements a) All reports required for submittal shall be signed and certified for accuracy by the permittee in accordance with the following criteria: 1) in the case of corporations, by a principal executive officer of at least the level of vice-president or his or her duly authorized representative, if such representative is responsible for the overall operation of the facility from which the discharge described in the form originates; 2) In the case of a partnership, by a general partner; 3) in the case of a sole proprietorship, by the proprietor; 4) in the case of a municipal, state, or other public facility, by either a principal executive officer, ranking elected official, or other duly authorized employee, if such representative is responsible for the overall operation of the facility from which the discharge described in the form originates. b Changes to authorization. if an authorization under paragraph a) of this section is no longer accurate because a different individual or position has responsibility for the overall operation of the facility, a new authorization satisfying the requirements of paragraph a) of this section must be submitted to the Division, prior to or together with any reports, information, or applications to be signed by an authorized representative. c) Certification. Any person signing a document under paragraph a) of this section shall make the following certification: "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designedto assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." Retention of Records a) The permittee shall retain copies of the SWMP and all reports required by this permit and records of all data used to complete the application to be covered by this permit, for three years after expiration or inactivation of permit coverage. The permittee shall retain a copy of the SWMP required by this permit at the construction site from the date of project initiation to the date of expiration or inactivation of permit coverage, unless another location, specified by the permittee, is approved by the Division. 3. Monitoring The Division reserves the right to require sampling and testing, on a case -by -case basis (see Part 1.D.1.e), for example to implement the provisions of a TMDL (see Part l.D.11 of the permit). Reporting procedures for any monitoring data collected will be included in the notification by the Division of monitoring requirements, if monitoring is required, the following definitions apply: a) The thirty (3 0) day average shall be determined by the arithmetic mean of all samples collected during a thirty (3 0) consecutive -day period. b) A grab sample, for monitoring requirements, is a single "dip and take" sample. PART II A. MANAGEMENT REQUIREMENTS 1. Amending a Permit Certification The permittee shall inform the Division (Permits Section) in writing of changes to the information provided in the permit application, including the legal contact, the project legal description or map originally submitted with the application, or the planned total disturbed acreage. The permittee shall furnish the Division with any plans and specifications which the Division deems reasonably necessary to evaluate the effect on the discharge and receiving stream. If applicable, this notification may be accomplished through submittal of an application for a CDPS process water permit authorizing the discharge. The SWMP shall be updated and implemented prior to the changes (see Part I.D.5.c). Any discharge to the waters of the State from a point source other than specifically authorized by this permit or a different CDPS permit is prohibited. 2. Special Notifications - Definitions a) Spill: An unintentional release of solid or liquid material which may cause pollution of state waters. b) Upset: An exceptional incident in which there is unintentional and temporary noncompliance with permit discharge limitations because of factors beyond the reasonable control of the permittee. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventative maintenance, or careless or improper operation. 3. Noncompliance Notification a) The permittee shall report the following instances of noncompliance: 1) Any noncompliance which may endanger health or the environment; 2) Any spill or discharge of hazardous substances or oil which may cause pollution of the waters of the state. 3) Any discharge of stormwater which may cause an exceedance of a water quality standard. For all instances of noncompliance based on environmental hazards and chemical spills and releases, all needed information must be provided orally to the Colorado Department of Public Health and Environment spill reporting line (24 -hour number for environmental hazards and chemical spills and releases: 1-877-518-5608) within 24 hours from the time the permittee becomes aware of the circumstances. For all other instances of noncompliance as defined in this section, all needed information must be provided orally to the Water Quality Control Division within 24 hours from the time the permittee becomes aware of the circumstances. For all instances of noncompliance identified here, a written submission shall also be provided within 5 calendar days of the time the permittee becomes aware of the circumstances. The written submission shall contain a description of: 1) The noncompliance and its cause; 2) The period of noncompliance, including exact dates and times, and if the noncompliance has not been corrected, the anticipated time it is expected to continue; 3) Steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance. A. MANAGEMENT REQUIREMENTS (cont.) 4. Submission of Incorrect or Incomplete information where the permittee failed to submit any relevant facts in a permit application, or submitted incorrect information in a permit application or report to the Division, or relevant new information becomes available, the permittee shall promptly submit the relevant application information which was not submitted or any additional information needed to correct any erroneous information previously submitted. 5. Bypass a) A bypass, which causes effluent limitations (i.e., requirements to implement BMPs in accordance with Parts I.B.3 and I.D.2 of the permit) to be exceeded is prohibited, and the Division may take enforcement action against a permittee for such a bypass, unless: 1) Bypass was unavoidable to prevent loss of life, personal injury, or severe property damage; 2) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities (e.g., alternative BMPs), retention of untreated wastes, or maintenance during normal periods of equipment downtime. This condition is not satisfied if the permittee could have installed adequate backup equipment (e.g., implemented additional BMPs) to prevent a bypass which occurred during normal periods of equipment downtime or preventative maintenance; and 3) The permittee submitted notices as required in "Non -Compliance Notification," Part II.A.3. Upsets a) Effect of an Upset: An upset constitutes an affirmative defense to an action brought for noncompliance with permit limitations and requirements if the requirements of paragraph b of this section are met. (No determination made during administrative review of claims that noncompliance was caused by upset, and before an action for noncompliance, is final administrative action subject to judicial review.) Conditions Necessary for a Demonstration of Upset: A permittee who wishes to establish the affirmative defense of upset shall demonstrate through properly signed contemporaneous operating logs, or other relevant evidence that: 1) An upset occurred and that the permittee can identify the specific cause(s) of the upset; 2) The permitted facility was at the time being properly operated; 3) The permittee submitted notice of the upset as required in Part 1I.A.3. of this permit (24 -hour notice); and 4) The permittee complied with any remedial measures required under 40 CFR Section 122.41(d) of the federal regulations or Section 61.8(3)(h) of the Colorado Discharge Permit System Regulations. c) Burden of Proof: In any enforcement proceeding the permittee seeking to establish the occurrence of an upset has the burden ofproof. 7. Removed Substances Solids, sludges, or other pollutants removed in the course of treatment or control of discharges shall be properly disposed of in a manner such as to prevent any pollutant from such materials from entering waters of the State. 8. Minimization of Adverse Impact The permittee shall take all reasonable steps to minimize any adverse impact to waters of the State resulting from noncompliance with any terms and conditions specified in this permit, including such accelerated or additional monitoring as necessary to determine the nature and impact of the noncomplying discharge. A. MANAGEMENT REQUIREMENTS (cont.) 9. Reduction, Loss, or Failure of Stormwater Controls The permittee has the duty to halt or reduce any activity if necessary to maintain compliance with the permit requirements. Upon reduction, loss, or failure of any stormwater controls, the permittee shall, to the extent necessary to maintain compliance with its permit, control production, or remove all pollutant sources from exposure to stormwater, or both, until the stormwater controls are restored or an alternative method of treatment/control is provided. It shall not be a defense for a permittee in an enforcement action that it would be necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions of this permit. 10. Proper Operation and Maintenance The permittee shall at all times properly operate and maintain all facilities and systems of treatment and control (and related appurtenances) which are installed or used by the permittee to achieve compliance with the conditions of this permit. Proper operation and maintenance includes effective performance, adequate funding, adequate operator staffing and training, and adequate laboratory and process controls, including appropriate quality assurance procedures. This provision requires the operation of back-up or auxiliary facilities or similar systems only when necessary to achieve compliance with the conditions of the permit. B. RESPONSIBILITIES 1. Inspections and Right to Entry The permittee shall allow the Director of the State Water Quality Control Division, the EPA Regional Administrator, and/or their authorized representative (s), upon the presentation of credentials: a) To enter upon the permittee's premises where a regulated facility or activity is located or in which any records are required to be kept under the terms and conditions of this permit; c) At reasonable times to have access to and copy any records required to be kept under the terms and conditions of this permit and to inspect any monitoring equipment or monitoring method required in the permit; and To enter upon the permittee's premises to investigate, within reason, any actual, suspected, or potential source of water pollution, or any violation of the Colorado Water Quality Control Act. The investigation may include, but is not limited to, the following: sampling of any discharge and/or process waters, the taking of photographs, interviewing permittee staff on alleged violations and other matters related to the permit, and access to any and all facilities or areas within the permittee's premises that may have any effect on the discharge, permit, or any alleged violation. 2. .Duty to Provide Information The permittee shall furnish to the Division, within the time frame specified by the Division, any information which the Division may request to determine whether cause exists for modifying, revoking and reissuing, or inactivating coverage under this permit, or to determine compliance with this permit. The permittee shall also furnish to the Division, upon request, copies of records required to be kept by this permit. 3. Transfer of Ownership or Control Certification under this permit may be transferred to a new permittee if: a) The current permittee notifies the Division in writing when the transfer is desired as outlined in Part I.A.7; and b) The notice includes a written agreement between the existing and new permittees containing a specific date for transfer of permit responsibility, coverage and liability between them; and c) The current permittee has met all fee requirements of the Colorado Discharge Permit System Regulations, Section 6L15. B. RESPONSIBILITIES (cont.) 4. Modification, Suspension, or Revocation of Permit By Division All permit modification, inactivation or revocation and reissuance actions shall be subject to the requirements of the Colorado Discharge Permit System Regulations, Sections 615(2), 615(3), 61.7 and 61.15, 5 C.C.R. 1002-61, except for minor modifications. a) This permit, and/or certification under this permit, may be modified, suspended, or revoked in whole or in part during its term for reasons determined by the Division including, but not limited to, the following: 1) Violation of any terms or conditions of the permit; 2) Obtaining a permit by misrepresentation or failing to disclose any fact which is material to the granting or denial of a permit or to the establishment of terms or conditions of the permit; 3) Materially false or inaccurate statements or information in the application for the permit; 4) Promulgation of toxic effluent standards or prohibitions (including any schedule of compliance specified in such effluent standard or prohibition) which are established under Section 307 of the Clean Water Act, where such a toxic pollutant is present in the discharge and such standard or prohibition is more stringent than any limitation for such pollutant in this permit. This permit, and/or certification under this permit, may be modified in whole or in part due to a change in any condition that requires either a temporary or permanent reduction or elimination of the permitted discharge, such as: 1) Promulgation of Water Quality Standards applicable to waters affected by the permitted discharge; or 2) Effluent limitations or other requirements applicable pursuant to the State Act or federal requirements; or 3) Control regulations promulgated; or 4) Other available information indicates a potential for violation of adopted Water Quality Standards or stream classifications. This permit, or certification under this permit, may be modified in whole or in part to include new effluent limitations and other appropriate permit conditions where data submitted pursuant to Part I indicate that such effluent limitations and permit conditions are necessary to ensure compliance with applicable water quality standards and protection of classified uses. d) At the request of the permittee, the Division may modify or inactivate certification under this permit if the following conditions are met: 1)► In the case of inactivation, the permittee notifies the Division of its intent to inactivate the certification, and certifies that the site has been finally stabilized; 2) In the case of inactivation, the permittee has ceased any and all discharges to state waters and demonstrates to the Division there is no probability of further uncontrolled discharge(s) which may affect waters of the State. 3) The Division finds that the permittee has shown reasonable grounds consistent with the Federal and State statutes and regulations for such modification, amendment or inactivation; 4) Fee requirements of Section 61.15 of the Colorado Discharge Permit System Regulations have been met; and 5) Applicable requirements of public notice have been met. For small construction sites covered by a Qualifying Local Program, coverage under this permit is automatically terminated when a site has been finally stabilized.. B. RESPONSIBILITIES IES (cont.) 5. Permit Violations Failure to comply with any terms and/or conditions of this permit shall be a violation of this permit. Dischargers of stormwater associated with industrial activity, as defined in the EPA Stormwater Regulation (40 CFI 122.26(b)(14) and Section 61.3(2) of the Colorado Discharge Permit System Regulations, which do not obtain coverage under this or other Colorado general permits., or under an individual CDPS permit regulating industrial stormwater, will be in violation of the federal Clean Water Act and. the Colorado Water Quality Control Act, 25--101, as amended. Failure to comply with CDPS permit requirements will also constitute a violation. Leal Res Jonsibilities The issuance of this permit does not convey any property or water rights in either real or personal property, or stream flows, or any exclusive privileges, nor does it authorize any injury to private property or any invasion of personal rights, nor any infringement of Federal, State or local laws or regulations. Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the permittee from any responsibilities, liabilities, or penalties established pursuant to any applicable State law or regulation under authority granted by Section 510 of the Clean Water Act. 7. Severability The provisions of this permit are severable. If any provisions of this permit, or the application of any provision of this permit to any circumstance, are held invalid, the application of such provision to other circumstances and the application of the remainder of this permit shall not be affected. 8. lien ewal Application If the permittee desires to continue to discharge, a permit renewal application shall be submitted at least ninety (90) days before this permit expires. If the permittee anticipates that there will be no discharge after the expiration date of this permit, the Division should be promptly notified so that it can inactivate the certification in accordance with Part I1.B.4.d. Confidentiality Except for data determined to be confidential under Section 308 of the Federal Clean Water Act and Colorado Discharge Permit System Regulations, Section 61.5(4), all reports prepared in accordance with the terms of this permit shall be available for public inspection at the offices of the Division. The permittee must state what is confidential at the time of submittal. Any information relating to any secret process, method of manufacture or production, or sales or marketing data which has been declared confidential by the permittee, and which may be acquired, ascertained, or discovered, whether in any sampling investigation, emergency investigation, or otherwise, shall not be publicly disclosed by any member, officer, or employee of the Commission or the Division, but shall be kept confidential. Any person seeking to invoke the protection of this section shall bear the burden of proving its applicability. This section shall never be interpreted as preventing full disclosure of effluent data. 10. Fees The permittee is required to submit payment of an annual fee as set forth in the Water Quality Control Act. Failure to submit the required fee when due and payable is a violation of the permit and will result in enforcement action pursuant to Section 25-8-601 et. seq., C.R.S. 1973 as amended. B. RESPONSIBILITIES (cont.) 11. Requiring an Individual CDPS Permit The Director may require the permittee to apply for and obtain an individual or alternate general CDPS permit if: a) The discharger is not in compliance with the conditions of this general permit; b) Conditions or standards have changed so that the discharge no longer qualifies for a general permit; or c) Data/information become available which indicate water quality standards may be violated. The permittee must be notified in writing that an application for an individual or alternate general CDPS permit is required. When an individual or alternate general CDPS permit is issued to an operator otherwise covered under this general permit, the applicability of this general permit to that operator is automatically inactivated upon the effective date of the individual or alternate general CDPS permit. Water Quality Control Division WQCD-P-B2 4300 Cherry Creek Drive South Denver, Colorado 80246-1530 RATIONALE STORMWATER DISCHARGES ASSOCIATED WITH CONSTRUCTION ACTIVITY GENERAL PERMIT IN COLORADO THIRD RENEWAL COLORADO DISCHARGE PERMIT NUMBER COR-030000 CONTENTS PAGE I. Introduction II. Changes in this General Permit III. Background IV. Stormwater Discharges Associated with Construction Activity V. Coverage Under this Permit VI. Application and Certification VII. Qualifying Local Programs VIII. Terms and Conditions of Permit IX. Public Notice — 12/22/06 X. Public Notice — 3/23/07 I. INTRODUCTION 1 1 S 9 10 10 11 11 15 15 This permit is for the regulation of stormwa ter runoff from construction activities, and specific allowable non- stormwater discharges in accordance with Part I.D.3 of the permit. The term "construction activity" includes ground surface disturbing activities, including, but not limited to, clearing, grading, excavation, demolition, installation of new or improved haul and access roads, staging areas, stockpiling of fill materials, and borrow areas. "Stormwater" is precipitation -induced surface runoff. This rationale will explain the background of the Stormwater program, activities which are covered under this permit, how to apply for coverage under this permit, and the requirements of this permit. The forms discussed in the rationale and permit are available on the Water Quality Control Division's website at: WWW.cd. he.state.co.us'wq/PermitsUnit II. CHANGES IN THIS GENERAL PERMIT Several notable changes from the previous Genera 1 Permit for Construction Activities have been incorporated into this permit. Significant changes are listed below. Numerous other minor changes were made for clarification purposes only. A. Authority to Discharge This section has been restructured to list all of the types of activities covered by this permit, and to be consistent with the definition of "construction activity." The definition of construction activity has been expanded to provide clarification. See Part I.A.1 of the permit. PART II Permit - Page 24 Permit No. COR-03 0000 II. CHANGES IN THIS GENERAL PERMIT (cont.) B. Authority to Discharge — Oil and Gas Construction is section has been added, to take into account a regulatory change. The federal Energy Policy Act of 2005 exempts nearly all oil and gas construction activities from federal requirements under the Clean Water Act's NPDES stormwater discharge permit program. In January 2006, the Colorado Water Quality Control Commission held a hearing to determine what effects, if any, the change in federal law would have upon Colorado's stormwater regulations. The Commission determined that oil and gas construction sites in Colorado that disturb one or more acres are still required to be covered under Colorado's stormwater permitting regulations(Colorado Discharge Permit System (CDPS) regulations (5CCR 1002-61)). In practice, oil and gas construction sites have the same requirements under this permit as do other types of construction. However, this permit contains s some references to the federal Clean Water Act; generally these references are not applicable to oil and gas construction sites to the extent that the references are limited by the federal Energy Policy Act of 2005. See Part LA.1(b) of the permit. C. Application Requirements e permit application requirements have changed slightly, including the addition of an email address, if available. See Part I.A.4(b). The applicant must be either the owner and/or operator of the construction site. An operator at a construction site that is not covered by a certification held by an appropriate entity may be held liable for operating without the necessary permit coverage. D. Temporary Coverage Part I.A.5(d) of the previous permit (effective July 1, 2002) dealt with temporarily covering a facility under the general permit even if an individual permit is more appropriate. This permit section essentially duplicated the previous section (see Part I.A.5(c)), and so it has been deleted. E. Reassignment of Permit Coverage Procedures have been added to clarify the requirements for the transfer of coverage of specific portions of a permitted site to a second party. See Section \'III.I.3 of the rationale and Part I.A.8 of the permit. F. Individual Permit Criteria This section has been modified to include situations involving a Total Maximum Daily Load (TMDL). See Part LA.11 of the permit. G. Stormwater Management Plan (SWMP) The Stormwater Management Plan section has been divided into two parts: Stormwater Management Plan (SWMP) — Genera 1 Requirements, which provides the basic framework and general requirements for the SWMP, and Stormwater Management P la n (SWMP) — Contents, which specifically identifies each item that must be addressed in the SWMP. See Parts I.B and I.C of the permit. H. Stormwater Management Plan (SWMP) General Requirements The SWMP General Requirements section has been modified to require that the SWMP be updated in accordance with Parts I.D.5(c) and I.D.5(d) of the permit (SWMP Review/Changes). This additional requirement ensures, that the SWMP provisions reflect current site conditions. See Part I.B.2(c) of the permit. PART II Permit - Page 25 Permit No. COR-030000 II. CHANGES IN THIS GENERAL PERMIT (cont.) I. Stormwater Management Plan (SWMP) — Contents The SWMP Contents section has been modified. Some of the changes are limited to organization of information, which does not require modification of an existing permittee's current SWMP. Most of the SWMP changes involve either clarifications, reformatting, or taking recommendations from the Division's SWMP guide and making them permit requirements (e.g., vehicle tracking controls, BMP installation specifications). If an existing permittee (i.e., those with permit coverage before June 30, 2007) followed the recommendations in the SWMP guide (Appendix A of the permit application), then their SWMP will presumably meet the new requirements. However, for any existing permittees who did not follow the applicable SWMP guide recommendations, their SMWP must be a mended to include the new required items: -SWMP Administrator -Identification of potential pollutant sources -Best Management Practices descriptions and installation specifications, including dedicated concrete or asphalt batch plants; vehicle tracking control; and waste management and disposal (including concrete washout activities). For existing permittees, any SWMP changes based on the change in permit requirements must be completed by October 1, 2007. The plan is not to be submitted to the Division unless requested, but must be available on site as outlined in Part I . D . 5 (b) of the permit. The BMP requirement clarifications included in this renewed permit in no way imply that adequate BMPs to address all pollutant sources at a permitted site were not required in previous permits. The revised requirements are intended only to better clarify SWMP content requirements and provide improved direction to permittees. The SWMP changes are listed below. All new applicants (after June 30, 2007) for permit coverage for their sites must fully comply with the new SWMP organization, plan requirements, and implementation. 1. Site Description: The requirement to provide an estimate of the run-off coefficient has been removed. The run-off coefficient as currently utilized in the SWMP may not contribute sufficiently to permit compliance to justify the effort in determining accurate values. See Part I.C.1 of the permit. However, the Division still encourages use of the coefficient as needed to adequately evaluate site -specific BMP selection and design criteria (e.g., pond capacities, BMP location, etc.) See Section C.2 of the SWMP guidance (Appendix A of the permit application). Site Map: The requirement to identify boundaries of the 100 -year flood plain has been removed. The boundaries as currently utilized in the SWMP may not contribute sufficiently to permit compliance to justify the effort in determining their location. See Part I. .2 of the permit. Stormwater Management Controls: This section has been modified to require identification of a SWMP Administrator and all potential pollutants sources in the SWMP. See Part I.C.3 of the permit. a) The SWMP Administrator is a specific individual(s), position or title who is responsible for the process of developing, implementing, maintaining, and revising the SWMP. This individual serves as the comprehensive point of contact for all aspects of the facility's SWMP. This requirement may necessitate changes to existing permittees' SWMPs. PART II Permit - Page 26 Permit No. COR-03 0000 II. CHANGES IN THIS GENERAL PERMIT (cont.) b) The requirement to identify Potential Pollutant Sources has been expanded to include more details for the evaluation of such sources. This evaluation allows for the appropriate selection of BMPs for implementation at a facility or site. Additionally, this section was added to be consistent with the SWNP guide. This requirement may necessitate changes to existing permittees' SWMPs. c Best Management Practices (BMPs) for Stormwater Pollution Prevention: This section was modified to require the following items to be addressed in the SWMP. These requirements may necessitate changes to existing permittees' SWMPs. This section also requires that the SWMP provide installation and implementation specifications for each BMP identified in the SWMP. For structural BMPs, in most cases, this must include a technical drawing to provide adequate installation specifications. See Part I.C.3(c). i) Dedicated concrete or asphalt batch plants. This section requires that the practices used to reduce the pollutants in stormwater discharges associated with dedicated concrete or asphalt batch plants be identified in the SWMP. (Coverage under the construction site SWMP and permit is not required for batch plants if they ha ve alternate CDPS permit coverage.) ii) Vehicle tracking control. This section requires that practices be implemented to control sediment from vehicle tracking, and that all such practices implemented at the site be clearly described in the SWMP. iii) Waste management and disposal. This section requires that the practices implemented at the site to control stormwater pollution from construction site waste, including concrete washout activities, be clearly described in the SWMP. It also requires that concrete washout activities be conducted in a manner that does not contribute pollutants to surface waters or stormwater runoff. ) Concrete Washout Water, Part I.D.3(c) of the permit has been revised to conditionally authorize discharges to the ground of concrete wash water from washing of tools and concrete mixer chutes when appropriate BMPs are implemented. The permit prohibits the discharge of concrete washout water to surface waters and to storm sewer systems. Part I.C.3(c)(7) of the permit requires that BMPs be in place to prevent surface discharges of concrete washout water from the site. The use of unlined pits to contain concrete washout water is a common practice in Colorado. The Division has further evaluated the need for a permit for discharge of concrete washout water to the ground. The Division has determined that the use of appropriate BMPs for on -site washing of tools and concrete mixer chutes would prevent any significant discharge to groundwater. BMPs to protect groundwater are required by Part 1..3(c)(7) of the permit. Because pH is a pollutant of concern for washout activities, the soil must have adequate buffering capacity to result in protection of the groundwater standard, or a liner/containment must be used. The following management practices are recommended to prevent an impact from unlined pits to groundwater: (1) the use of the washout site should be temporary (less than 1 year), and (2) the washout site should be not be located in an area where shallow groundwater may be present, such as near natural drainages, springs, or wetlands. PART II Permit - Page 27 Permit No. C,OR-03 0000 II. CHANGES IN THIS GENERAL PERMIT (cont.) Where adequate management practices are not followed to protect groundwater quality, the Department may require discharges to unlined pits to cease, or require the entity to obtain alternate regulatory approval through notice from either the Water Quality Control Division or the Hazardous Materials and Waste Management Division. In addition, Part I.D.1(b) of the permit has been revised to clearly state that the permit does not authorize on -site permanent disposal of concrete washout waste, only temporary containment of concrete washout water from washing of tools and concrete mixer chutes. Upon termination of use of the washout site, accumulated solid waste, including concrete waste and any contaminated soils, must be removed from the site to prevent on -site disposal of solid waste. v) Construction Dewatering. Part I.D.3(d) of the permit has been revised to conditionally authorize discharges to the ground of water from construction dewatering activities when appropriate BMPs are implemented. The permit does not authorize the discharge of groundwater from construction dewatering to surface waters or to storm sewer systems, Part I.C.3(c)(8) of the permit requires that BMPs be in place to prevent surface discharges. The permittee may apply for coverage under a separate CDPS discharge permit, such as the Construction Dewatering general permit, if there is a potential for discharges to surface waters. The Division has determined that potential pollutant sources introduced into groundwater from construction dewatering operations do not have a reasonable potential to result in exceedance of groundwater standards when the discharge is to the ground. The primary pollutant of concern in uncontaminated groundwater is sediment. Although technology- based standards for sediment do exist in 5 CCR 1002-41, the discharge of sediment to the ground as part of construction dewatering does not have the reasonable potential to result in transport of sediment to the groundwater table so as to result in an exceedance of those standards. For a discharge of water contaminated with other pollutants that are present in concentrations that may cause an exceedance of groundwater standards, separate CDPS discharge permit coverage is required. Contaminated groundwater may include that contaminated with pollutants from a landfill, mining activity, industrial pollutant plume, underground storage tank, or other source of human -induced groundwater pollution and exceeding the State groundwater standards in Regulations 5 CCR 1002-41 and 42. Terms and Conditions, General Limitations and Design Standards This section reiterates the requirement that facilities select, install, implement, and maintain appropriate BMPs, following good engineering, hydrologic and pollution control practices. In addition, requirements for protection of water quality standards (see Part I.D.1.(a) of the permit) and requirements to adequately design BMPs to prevent pollution or degradation of State waters (see Part I.D.2 of the permit) have been revised and are fully discussed in Part III,B of the rationale, below, Additional language was also added to Section Itt.B of the rationale further clarifying the expectations for compliance with this permit. 1. Management of Site Waste This section has been modified to clarify that on -site waste must be properly managed to prevent potential pollution of State waters, and that this permit does not authorize on -site waste disposal. Solid waste disposal is regulated by the Hazardous Materials and Waste Management Division. PART II Permit - Page 28 Permit No. COR-o3 0000 II. CHANGES IN THIS GENERAL PERMIT (cont.) K. Terms and Conditions. SWMP Requirements 1. SWMP Review/Changes: This section now requires that when changes are made to site conditions, the SWIVI2 must be revised immediately, except for some BMP description changes which conditionally may occur within 72 hours. This requirement is included to both ensure that the SWMP be kept accurate and up-to-date, and to clarify that stormwater management at a site typically should be proactive instead of responsive, and be integrated into site management to ensure it is calibrated with those changes. The section was also clarified to state that only changes in site conditions that do not require new or modified BMPs do not need to be addressed in the WIMP, See Part I.D.5(c) of the p ermit. 2. SWMP Certification: The previous permit was unclear on a requirement that the copy of SWMP that remains at the fa c i l i ty had to be signed in accordance with permit signatory requirements. This requirement has been deleted. The signatory requirement of Part I,F.1 only applies to the SWMP if it is to be submitted to the Division or to EPA. See Part I.F.1 of the permit. L. Terms and Conditions, Post -Storm Inspections The previous permit required post -storm inspections, but did not specify the timing of inspections. This section now requires that post -storm event inspections generally be conducted within 24 hours of the event. An alternative timeline has been allowed, only for sites where there are no construction activities occurring following a storm event. For this condition, post -storm event inspections shall instead be conducted prior to commencing construction activities, but no later than 72 hours following the storm event, and the delay noted in the inspection report. Any exception from the minimum inspection schedule is temporary, and does not eliminate the requirement to perform routine maintenance due to the effects of a storm event, including maintaining vehicle tracking controls and removing sediment from impervious areas. In many cases, maintenance needs will require a more frequent inspection schedule than the minimum inspections required in the permit, to ensure that BMPs continue to operate as needed to comply with the permit. See Part I.D.6(a) of the permit. M. Terms and Conditions, Inspections I. The Winter Conditions Inspection Exclusion section has been modified to include documentation requirements for this exclusion. See Part I.D.6(a) of the permit. The Inspection Scope has been modified to include the requirement to inspect waste storage areas during inspections conducted in accordance with the permit. See Part I.D.6(b) of the permit. The requirements for sites to qualify for reduced inspection frequencies for completed sites have been slightly modified (see Part I.D.6(a)(2) of the permit,). The requirement now is that only construction activities that disturb the ground surface must be completed. Construction activities that can be conducted without disturbance of the ground surface; for example, interior building construction, and some oil well activities, would not prohibit a site from otherwise qualifying for the reduced inspection frequency. In addition, the requirement for the site to be prepared for final stabilization has been slightly modified to allow for sites that have not yet been seeded to qualify, as long as the site has otherwise been prepared for final stabilization, including completion of appropriate soil preparation. amendments and stabilization practice. This will allow for sites with seasonal seeding limitations or where additional seed application may be needed in the future to still qualify. PART II Permit - Page 29 Permit No. COR-030000 II. CHANGES IN THIS GENERAL PERMIT (cont.) 3. The Inspection Report/Records section (Part I.D.6(b)(2)) was added to clarify requirements for inspection reports generated during an inspection conducted in accordance with Part I.D.6 of the permit. Inspection reports must be signed by the inspector, or the individual verifying the corrective action indicated in the inspection report, on behalf of the permittee. Inspection reports are not typically required to be submitted to the Division, and therefore, are not required to be signed and certified for accuracy in accordance with Part I.F.1 of the permit. However, any inspection reports that are submitted to the Division must follow the signatory requirements contained in that section. N. Terms and Conditions, Maintenance, Repair, and Replacement of Control Practices These sections have been added to clarify requirements for maintaining the BMPs identified in the SWMP and for addressing ineffective or failed BMPs. BMP maintenance and site assessment to determine the overall adequacy of stormwater quality management at the site must occur proactively, in order to ensure adequate control of pollutant sources at the site. In most cases, if BMPs are already not operating effectively, or have failed, the issue must be addressed immediately, to prevent discharge of pollutants. See Parts I,D.7 and LD.S of the permit. O. Total Maximum Daily Load (TMDL) A section on TMDLs has been added. This section gives a general outline of the additional requirements that may be imposed by the Division if the facility discharges to a waterbody for which a stormwater-related TMDL is in place. See Section VIII.C of the rationale and Part I.D.11 of the permit. P. Additiona 1 Definitions Part 1.F of the permit has been modified to remove the definition of runoff coefficient, as it is no longer a permit requirement. The definition for state waters has also been deleted, but can be found in Regulation 61. Q. Changes in Discharge The section on the types of discharge or facility changes that necessitate Division notification has been clarified. See Part II*A.1 of the permit. R. Non -Compliance Notification The section on notification to the Division regarding instances of non-compliance has been amended to clarify which types of noncompliance require notification. See Part 11.1..3 of the permit. Short Term Certifications The previous permit allowed small short-term construction activities to be authorized for a predetermined period from 3 to 12 months, and then automatically expire (an inactivation request did not need to be submitted). The issuance of these certifications has led to significant confusion and incidents of noncompliance resulting from permittees unintentionally letting their certifications expire prior to final stabilization, as well as issues regarding billing. Therefore, the provisions for short-term certifications have been deleted. T. Bypass The Division has revised the Bypass conditions in Part II.A.5 of the permit to be consistent with the requirements of Regulation 61.8(3)(i). The revised language addresses under what rare occurrences BMPs may be bypassed at a site. PART II Permit - Page 30 Permit No. COR-030000 III. BACKGROUND As required under the Clean Water Act amendments of 1987, the Environmental Protection Agency (EPA) has established a framework for regulating municipal and industrial stormwater discharges. This framework is under the National Pollutant Discharge Elimination System (NPDES) program (Note: The Colorado program is referred to as the Colorado Discharge Permit System, or CDPS, instead of NPDES.) The Water Quality Control Division ("the Division") has stormwater regulations (SCCR 1002-61) in place. These regulations require specific types of industrial facilities that discharge stormwater associated with industrial activity (industrial stormwater), to obtain a CDPS permit for such discharge. The regulations specifically include construction activities that disturb one acre of land or more as industrial facilities. Construction activities that are part of a larger common plan of development which disturb one acre or more over a period of time are also included. A. General Permits rj he Division has determined that the use of general permits is the appropriate procedure for handling most of the thousands of industrial stormwater applications within the State. B. Permit Requirements This permit does not impose numeric effluent limits or require submission of effluent monitoring data in the permit application or in the permit itself. The permit instead imposes practice -based effluent limita tions for stormwater discharges through the requirement to develop and implement a Stormwater Management Plan (SWMP), The narrative permit requirements include prohibitions against discharges of non-stormwater (e.g., process water). See Part I.D.3 of the permit. The permit conditions for the SWMP include the requirement for dischargers to select, implement and maintain Best Management Practices (BMPs) at a permitted construction site that adequately minimize pollutants in the discharges to assure compliance with the terms and conditions of the permit. Part I.D.2 of the permit includes basic design standards for BMPs implemented at the site. Facilities must select, install, implement, and maintain appropriate BMPs, following good engineering, hydrologic and pollution control practices. BMPs implemented at the site must be adequately designed to control all potential pollutant sources a ssociated with construction activity to prevent pollution or degradation of State waters. Pollution is defined in CDPS regulations (SCCR 1002-61) as man-made or man -induced, or natural alteration of the physical, chemical, biological, and radiological integrity of water. Utilizing industry -accepted standards for BMP selection that are appropriate for the conditions and pollutant sources present will typically be adequate to meet these criteria, since construction BMPs are intended to prevent the discharge of all but minimal amounts of sediment or other pollutants that would not result in actual pollution of State waters, as defined above. However, site -specific design, including ongoing a ssessment of BMPs and pollutant sources, is necessary to ensure that BMPs operate as intended. The permit further requires that stormwater discharges from construction activities shall not cause, have the reasonable potential to cause, or measurably contribute to an excursion above any water quality standard, including narrative standards for water quality. This condition is the basis for all CDPS Discharge permits, and addresses the need to ensure that waters of the State maintain adequate water quality, in accordance with water quality standards, to continue to meet their designated uses. It is believed that, in most cases, BMPs can be adequate to meet applicable water quality standards. If water quality impacts are noted, or the Division otherwise determines that additional permit requirements are necessary, they are typically imposed as follows: 1) at the renewal of this general permit or through a general permit specific to an industrial sector (if the issue is sector -based); 2) through direction from. the Division based on the implementation of a TMDL (if the issue is watershed -ha sed); or 3) if the issue is site -specific, through a revision to the certification from the Division based on an inspection or SWMP review, or through an individual permit. PART II Permit - Page 31 Permit No. COR-030000 III. BACKGROUND (cont.) Some construction sites may be required to comply with a Qualifying Local Program in place of meeting several of the specific requirements in this permit. Sites covered by a Qualifying Local Program may not be required to submit an application for coverage or a notice of inactivation and may not be required to pay the Division's annual fee. See Section VII of the rationale, C. Violations/Penalties Dischargers of stormwater associated with industrial activity, as defined in the CDPS regulations (5CCR 1002-61), that do not obtain coverage under this or other Colorado general permits, or under an individual CDPS permit regulating industrial stormwater, will be in violation of the Federal Clean Water Act and the Colorado Water Quality Control Act, 25-8-101, For facilities covered under a CDPS permit, failure to comply with any CDPS permit requirement constitutes a violation. As of the time of permit issuance, civil penalties for violations of the Act or CDPS permit requirements may be up to $10,000 per day, and criminal pollution of state waters is punishable by fines of up to $25,000 per day. IV. STORMWATER DISCHARGES ASSOCIATED WITH CONSTRUCTION ACTIVITY The stormwater regulations (CDPS regulations (SCCR 1002-61)), require that stormwater discharges associated with certain industrial activities be covered under the permit program. Construction activity that disturbs one acre or more during the life of the project is specifically included in the listed industrial activities. This permit is intended to cover most stormwater discharges from construction facilities required by State regulation to obtain a permit. A. Construction Activity Construction activity includes ground surface disturbing activities including, but not limited to, clearing, grading. excavation, demolition, installation of new or improved haul and access roads, staging areas, stockpiling of fill materials, and dedicated borrow/fill areas. Construction does not include routine maintenance to maintain original line and grade, hydraulic capacity, or original purpose of the facility. (The maintenance exclusion is intended for projects such as road resurfacing, and where there will be less than one acre of additional ground disturbed. Improvements or upgrades to existing facilities or roads, where at least one acre is disturbed, would not qualify as "routine maintenance.") Definitions of additional terms can be found in Part I.E of the permit. Stormwater discharges from all construction activity require permit coverage, except for operations that result in the disturbance of less than one acre of total land area and which are not part of a larger common plan of development or sale. A "larger common plan of development or sale" is a contiguous area where multiple separate and distinct construction activities may be taking place at different times on different schedules. B. Types of Discharges/Activities Covered 1. Stormwater: This permit is intended to cover most new or existing discharges composed entirely of stormwater from construction activities that are required by State regulation to obtain a permit. This includes stormwater discharges associated with areas that are dedicated to producing earthen materials, such as soils, sand, and gravel, for use at a single construction site. These areas may be located at the construction site or at some other location. This permit does not authorize the discharge of mine water or process water from borrow areas. This permit may also cover stormwater discharges associated with dedicated asphalt plants and concrete plants located at a specific construction site. PART II Permit - Page 32 Permit No. COR-030000 IV. STORMWATER DISCHARGES ASSOCIATED WITH CONSTRUCTION ACTIVITY (cont.) ?. Process water: Under certain restrictions, discharges to the ground from construction dewatering, and from concrete washout activities, are also covered (see Parts I.C.3(c)(7), I.C.3(c)(8). I.D.3(c) and I.D.3(d) of the permit). C. Types of Activities NOT Covered Stormwater: Aside from the sources listed in subparagraph B.1, above, this permit does not cover stormwater discharged from construction sites that is mixed with stormwater from other types of industrial activities, or process water of any kind. Other types of industrial activities that require stormwater discharge permits pursuant to different sections of the regulations (Regulation 5 CCR 1002-61, Section 61.2(e)(iii)(A-I, IQ], are not covered by this permit. 2. Process water: This permit also does not cover any discharge of process water to surface waters. If the construction activity encounters groundwater, in order to discharge this groundwater to surface waters, a Construction Dewatering Discharge Permit (permit number COG -070000) must also be obtained. An application for this permit can be obtained from the Division at the address listed in Part I.A.4(a) of the permit, or at the website in Section I of the rationale. V. COVERAGE UNDER THIS GENERAL PERMIT Under this general permit., owners or operators of stormwater discharges associated with construction activity may be granted authorization to discharge stormwater into waters of the State of Colorado. This includes stormwater discharges associated with industrial activity from areas that are dedicated to producing earthen materials, such as soils, sand and gravel, for use at a single construction site, and dedicated asphalt plants and dedica ted concrete plants. This permit does not pre-empt or supersede the authority of other local, state or federal agencies to prohibit, restrict or control discharges of stormwater to storm drain systems or other water courses within • eir jurisdiction. Authorization to discharge under the permit requires submittal of a completed application form and a certification that the SWMP is complete, unless the site is covered by a Qualifying Local Program. Upon receipt of all required information, the Division may allow or disallow coverage under the general permit. VI. APPLICATION AND CERTIFICATION At least ten days prior to the commencement of construction activities, the owner or operator of the construction site shall submit an original completed application which includes the signed certification that the SWMP is complete. Original signatures are required for the application to be considered complete. For small construction sites only, if the site is covered by a Qualifying Local Program (see below), submittal of an application is not required. For the purposes of this permit, the "operator" is the person who has day-to-day control over the project. This can be the owner, the developer, the general contractor or the agent o; one of these parties, in some circumstances. At different times during a construction project, different types of parties may satisfy the definition of "operator" and the certification may be transferred as roles change. (Note Under the Federal regulations, this application process is referred to as a Notice of Intent, or NOI. For internal consistency with its current program, the Division will continue to use the term "application.") A summary of the permit application requirements is found in the permit at Part I.A.4(b). If coverage under this general permit is appropriate, then a certification will be developed and the applicant will be certified under this general permit. PART II Permit - Page 33 Permit No. COR-030000 VII. QUALIFYING LOCAL PROGRAMS For stormwater discharges associated with small construction activity (i.e., one to five acre disturbed area sites), the permit includes conditions that incorporate approved qualifying local erosion and sediment control program (Qualifying Local Program) requirements by reference. A Qualifying Local Program is a municipal stormwater program for stormwater discharges associated with small construction activity that has been formally approved by the Division. The requirements for Qualifying Local Programs are outlined in Part 61.8(12) of the Colorado Discharger Permit System Regulations (also see the Division's "Qualifying Local Programs for Small Construction Sites - Application Guidance"). Such programs must impose requirements to protect water quality that are at least as stringent as those required in this permit. A. Approval Termination A Qualifying Local Program may be terminated by either the Division or the municipality, Upon termination of Division approval of a Qualifying Local Program, any small construction activity required to obtain permit coverage under Section 61.3(2)(h) of the CDPS regulations (5CCR 1002-61), shall submit an application form as provided by the Division, with a certification that the Stormwater Management Plan (WP) is complete as required by Part I,A,3 of the permit, within 30 days of Division notification, Approval Expiration Division approval of a Qualifying Local Program will expire with this general permit on June 30, 2012. Any municipality desiring to continue Division approval of their program must reapply by March 31, 2012, The Division will determine if the program may continue as a approved Qualifying Local Program. VIII. TERMS AND CONDITIONS OF PERMIT A. Coverage under a Qualifying Local Program — F or Small Construction Sites Only For small construction sites (disturbing less than 5 acres) covered under a Qualifying Local Program (see Section VII, above), only certain permit requirements apply, as outlined below. The local program must have been formally designated by the Division to qualify. Most municipalities have some type of local program and may require permits and fees. However, simply having a program in place does not necessarily mean that it is a qualifying program and that a State permit is not required. The local municipality is responsible for notifying operators and/or owners that they are covered by a Qualifying Local Program. As of May 31, 2007, the only approved Qualifying Local Programs within the state are for Golden, Durango and Lakewood. An updated list of municipalities with Qualifying Local Programs, including contact information, is available on the Division's website at: http://www.cdphc.state.co.ushvq/PermitsUnitistormwater/construction.html, The Division reserves the right to require any construction owner or operator within the jurisdiction of a Qualifying Local Program covered under this permit to apply for and obtain coverage under the full requirements of this. permit, 1. Permit Coverage: If a construction site is within the jurisdiction of a Qualifying Local Program, the owner or operator of the construction activity is authorized to discharge stormwater associated with small construction activity under this general permit without the submittal of an application to the Division, The permittee also is not required to submit an inactivation notice or payment of an annual fee tote Di\vision. PART II Permit - Page 34 Permit No. COR-03 0000 VIII. TERMS AND CONDITIONS OF PERMIT (coat.) 2. Permit Terms and Conditions: The permittee covered by a Qualifying Local Program must comply with the requirements of that Qualifying Local Program. In addition, the following permit sections are applicable: a) Parts 1.A.1, 1.A.2, and 1.A.3: Authorization to discharge and discussion of coverage under the permit. b) Part I.D.1 : General limita tions that must be met in addition to local requirements. c) Parts I.D.2, I.D.3, I.D.4: BMP implementation, prohibition of non-stormwater discharges unless addressed in a separate CDPS permit, and requirements related to releases of reportable quantities. d) Part I.D.11: Potential coverage under a Total Maximum Daily Load (TMDL), e) Part 1.E: Additional definitions. I) Part II (except for Parts II.A.1, II.B.3, II.B. S, and 11.B.10): Specifically includes, but is not limited to, provisions applicable in the case of noncompliance with permit requirements, and requirements to provide information and access. B. Stormwater Management Plans (SWMPs) Prior to commencement of construction, a stormwater management plan (SWMP) shall be developed and implemented for each facility covered by this permit. A certification that the SWMP is complete must be submitted with the permit application. The SWMP shall identify potential sources of pollution (including sediment) which may rca sonably be expected to affect the quality of stormwater discharges associated wi construction activity from the facility. In addition, the plan shall describe the Best Management Practices (BMPs) which will be used to reduce the pollutants in stormwater discharges from the construction site. (Note that permanent stormwater controls, such as ponds, that are used as temporary construction BMPs must be adequately covered in the SWMP.) Facilities must implement the provisions of their SWMP as a condition of this permit. The SWMP shall include the following items: 1. Site Description 2. Site Map 3. Stormwater Management Controls 4. Long-term Stormwater Management 5. Inspection and Maintenance (See Parts LB. and I.C of the permit for a more detailed description of SWMP requirements.) The Division has a guidance document available on preparing a SAWMP. The document is included as Appendix A of the permit application, and is available on the Division's website at www.cdphe.state.co.uslwg/PermitsUnit. Some changes have been made to the SWMP requirements. See Section ILI of the rationale for a discussion on permittee responsibilities regarding those changes. PART II Permit - Page 35 Permit No. COR-03 0000 VIII. TERMS AND CONDITIONS OF PERMIT (cont.) Master SWMP Often. a large construction project will involve multiple smaller construction sites that are within a common plan of development, or multiple well pads under construction within an oil and gas well field. Pollutant sources and the types of BMPs used can be relatively consistent in such cases. A permittee could significantly streamline the SWMP development process through the use of a master SWMP. WIMP information must be developed and maintained for all construction activities that exceed one acre (or are part of a common plan of development exceeding one acre) conducted within the permitted area. By developing a single master plan. the permittee can eliminate the need to develop repetitive information in separate plans. Such a plan could include two sections, one containing a reference section with information applicable to all sites (e.g., installation details and maintenance requirements for many standard BMPs, such as silt fence and erosion blankets), and the second containing all of the information specific to each site (e.g., site BMP map, drainage plans, details for BMPs requiring site specific design, such as retention ponds). As new activities begin, information required in the SWMP is added to the plan, and as areas become finally stabilized, the related information is removed. Records of information related to areas that have been finally stabilized that are removed from the active plan must be maintained for a period of at least three years from the date that the associated site is finally stabilized, Total Maximum Daily Load (TMDL) If the designated use of a stream or water body has been impaired by the presence of a pollutant(s), development of a Total Maximum Daily Load (TMDL) may be required. A TMDL is an estimate of allowable loading in the waterbody for the pollutant in question. Types of discharges that are or have the potential to be a significant source of the pollutant are also identified. If a TMDL has been approved for any waterbody into which the permittee discharges, and stormwater discharges associated with construction activity have been assigned a pollutant -specific Wasteload Allocation (WLA) under the TMDL, the Division will either: 1. Notify the permittee of the TMDL, and amend the permittee's certification to add specific BMPs an or other requirements, as appropriate; or 2. Ensure that the TMDL is being implemented properly through alternative local requirements, such as by a municipal stormwater permit. (The only current example of this is the Cherry Creek Reservoir Control Regulation (72.0), which mandates that municipalities within the basin require specific BMPs for construction sites.) See Part I.D.11 of the permit for further information. D. Monitoring Sampling and testing of stormwater for specific parameters is not required on a routine basis under this permit. However, the Division reserves the right to require sampling and testing on a case -by -case basis, in the event that there is reason to suspect that compliance with the SWMP is a problem, or to measure the effectiveness of the BMPs in removing pollutants in the effluent. See Part I.D.1(e) .1(e) of the permit. Facility Inspections Construction sites typically must inspect their stormwater management controls at least every 14 days and within 24 hours after the end of any precipitation or snowmelt event that causes surface erosion. At sites or portions of sites where ground -disturbing construction has been completed but a vegetative cover has not been established, these ' I spections must occur at least once per month. (At sites where persistent snow cover conditions exist, inspections are not required during the period that melting conditions do not exist, These PART II Permit - Page 36 Permit No. COR-03 0000 VIII. TERMS AND CONDITIONS OF PERMIT (cont.) conditions are only expected to occur at high elevations within the Colorado mountains.) For all of these inspections, records must be kept on file. Exceptions to the inspection requirements are detailed in Part I.D.6 of the permit. SWMP Revisions The permittee shall amend the SWMP whenever there is a change in design, construction, operation, or maintenance of the site, which would require the implementation of new or revised BMPs. The SWMP shall also be amended if it proves to be ineffective in achieving the general objectives of controlling pollutants in stormwater discharges associated with construction activity. The timing for completion of SWMP changes is detailed in Parts I.D.5(c) and I.D.5(d) of the permit, SWMP revisions shall be made prior to change in the field, or in accordance with Part I.D.5(d) of the permit. G. Reporting The inspection record shall be made available to the Division upon request. Regular submittal of an annual report is not required in this permit. See Part I.D.9 of the permit. H. Annual Fee The permittee is required to submit payment of an annual fee as set forth in the Water Quality Control Act. Permittees will be billed for the initial permit fee within a few weeks of permit issuance and then annually, based on a July 1 through June 30 billing cycle. I. Responsibility for Permit The permit certification for a site may be inactivated, once coverage is no longer needed. The certification may be transferred, if another party is assuming responsibility for the entire area covered by the certification. In addition, permit responsibility for part of the area covered by the certification may be reassigned to another party. These actions are summarized below. The Stormwater Program construction fact sheet explains these actions in further detail under the section on Multiple Owner/Developer Sites, and is available on the Division website at http:/lwww.cdphe.state.co.usiwq/PermitsUnit/stormwater/ConstFactShe et.PDF, Section F. 1. Inactivation Notice: When a site has been finally stabilized in accordance with the SWMP, the permittee shall submit an Inactivation Notice that is signed in accordance with Part I.F.1 of the permit. A summary of the Inactivation Notice content is described in Part I.A.6 of the permit. A copy of the Inactivation Notice form will be mailed to the permittee along with the permit certification. Additional copies are available from the Division, For sites where all areas have been removed from permit coverage, the permittee may submit an inactivation notice and terminate permit coverage. In such cases the permittee would no longer have any land covered under their permit certification, and therefore there would be no areas remaining to finally stabilize, Areas may be removed from permit coverage by: -reassignment of permit coverage (Part I.A.8 of the permit); -sale to homeowner(s) (Part I.A.9 of the permit); or -amendment by the permittee, in accordance with Division guidance for areas where permit coverage has been obtained by a new operator or returned to agricultural use. PART II Permit - Page 37 Permit No. COR-030000 VIII. TERMS AND CONDITIONS OF PERMIT (cont.) 2, Transfer of Permit: When responsibility for stormwater discharges for an entire construction site changes from one individual to another, the permit shall be transferred in accordance with Part I.A.7 of the permit. The permittee shall submit a completed Notice of Transfer form, which is available from the Division, and at www.cd Dhe.state.co.us/wq/PermitsUnt. If the new responsible party will not complete the transfer form, the permit may be inactivated if the permittee has no legal responsibility, through ownership or contract, for the construction activities at the site. In this case, the new owner or operator would be required to obtain permit coverage separately. Reassignment of Permit: When a permittee no longer has control of a specific portion of a permitted site, and wishes to transfer coverage of that portion of the site to a second party, the permittee shall submit a completed Notice of Reassignment of Permit Coverage form, which is available from the Division, and at www.cdphe.state.co.us,/wq/PermitsUnit. The form requires that both the existing permittee and new permittee complete their respective sections. See Part I.A.8 of the permit. J. Duration of Permit The general permit will expire on June 30. 2012. The permittee's authority to discharge under this permit is approved until the expiration date of the general permit. Any permittee desiring continued coverage under the general permit past the expiration date must apply for recertification under the general permit at least 90 days prior to its expiration date. Kathleen Rosow December 18, 2006 a. PUBLIC NOTICE — 12/22/06 The permit was sent to public notice on December 22, 2006. A public meeting was requested, and was held on February 2, 2007. Numerous comments were received on the draft permit. Responses to those comments, and a summary of changes made to the draft permit, are in a separate document entitled "Division Response To Public Comments." The permit will be sent to a second public notice on March 23, 2007. Any changes resulting from the second public notice will be summarized in the rationale. Kathleen Rosow March 22, 2007 X. PUBLIC NOTICE - 3/23/07 The permit was sent to public notice for a second time on March 23, 2007. Numerous comments were received on the second draft permit. Responses to those comments, and a summary of the additional changes made to the draft permit, are contained in a separate document entitled "Division Response To Public Comments Part II". This document is part of the rationale. Any changes based on the Division response are incorporated into the rationale and permit. The response document is available online at http://www.cdphe.state.co.uslwq/PermitsUnit/stormwater/construction.html, or by emailing cdphe.wgstorm state.co.us, or by calling the Division at 303-692-3517. Kathleen Rosow May 31, 2007 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Attachments and Site -Specific Information Attachment 2 Application Spirit Environmental, LLC 18350.OOA June 2018 8-3 DocuSign ig n Envelope I D : 5C2 78560-98 E4-4 F77 -A85 3-8 B4F D 54D6090 ASSIGNED PERMIT NUMBER COLORA DO Department of Public Health & £nvironm,en# Dedicated to protecting and improving the health and environment of the people of Colorado Date Received / / Revised: 3-2016 6/14/2018 I 07:32 PDT STORMWATER DISCHARGE ASSOCIATED WITH CONSTRUCTION ACTIVITIES APPLICATION COLORADO DISCHARGE PERMIT SYSTEM (CDPS) PHOTO COPIES, FAXED COPIES, PDF COPIES OR EMAILS WILL NOT BE ACCEPTED. For Applications submitted on paper - Please print or type. Original signatures are required. All items must be completed accurately and in their entirety for the application to be deemed complete. Incomplete applications will not be processed until all information is received which will ultimately delay the issuance of a permit. If more space is required to answer any question, please attach additional sheets to the application form. Applications or signature pages for the application may be submitted by mail or hand delivered to: Colorado Department of Public Health and Environment, 4300 Cherry Creek Drive South, WQCD-P-B2, Denver, CO 80246-1530 For Applications submitted electronically Please note that you can ONLY complete the feedback form by downloading it to a PC or Mac/Apple computer and opening the Application with Adobe Reader or a similar PDF reader. The form will NOT work with web browsers, Google preview, Mac preview software or on mobile devices using iOS or Android operating systems. If application is submitted electronically, processing of the application will begin at that time and not be delayed for receipt of the signed document. Any additional information that you would like the Division to consider in developing the permit should be provided with the application. Examples include effluent data and/ or modeling and planned pollutant removal strategies. Beginning July 1, 2016, invoices will be based on acres disturbed. DO NOT PAY THE FEES NOW - Invoices will be sent after the receipt of the application. Disturbed Acreage for this application (see page 4) Less than 1 acre ($83 initial fee, $165 annual fee) 1-30 acres ($175 initial fee, $350 annual fee) Greater than 30 acres ($270 initial fee, $540 annual fee) PERMIT INFORMATION Reason for Application: / NEW CERT r RENEW CERT EXISTING CERT# Applicant is: kjr Property Owner r Contractor/Operator A. CONTACT INFORMATION - *indicates required * PERMITTED ORGANIZATION FORMAL NAME: Outrigger DJ Operating LLC 1) * PERMIT OPERATOR - the party that has operational control over day to day activities - may be the same as owner. Responsible Person (Title): Senior Project Manager Currently Held By (Person): FirstName: Andrew LastName: Perdue p ig g gY Telephone: (720) 361-2580 Email Address: aperdue@outriggerenergy.com OUtr�Brener .corn o,Ra,,;,at;on, Outrigger DJ Operating LLC Mailing Address: 1200 Seventeenth Street Suite 900 City: Denver State: CO Zip Code: 80202 Per Regulation 61 : All reports required by permits, and other information requested by the Division shall be signed by the permittee or by a duly authorized representative of that person. A person is a duly authorized representative only if: (i) The authorization is made in writing by the permittee (ii) The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as the position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company. (A duly authorized representative may thus be either a named individual or any individual occupying a named position); and (iii) The written authorization is submitted to the Division Outrigger DJ Operating LLC - 08:25:00 - 06/1412018 a78bb091-Ob►e6-4ef7-af4a-89a8d07a9cid SW Construction Application for: Outrigger DJ Operating LLC 06!14/2018 page 1 of 5 DocuSign ig n Envelope I D : 5C2 78560-98 E4-4 F77 -A85 3-8 B4F D 54D6090 2) OWNER - party has ownership or long term lease of property - may be the same as the operator. I' Same as 1) Permit Operator Responsible Person (Title): Currently Held By (Person): FirstName: LastName: _ Telephone: Email Address: Organization: Mailing Address: City: State: Zip Code: Per Regulation 61 : All reports required by permits, and other information requested by the Division shall be signed by the permittee or by a duly authorized representative of that person. A person is a duly authorized representative only if: i. The authorization is made in writing by the permittee. ii. The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as the position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company. (A duly authorized representative may thus be either a named individual or any individual occupying a named position); and iii. The written authorization is submitted to the Division. 3) *SITE CONTACT local contact for questions relating to the facility & discharge authorized by this permit for the facility rSame as 1) Permit Operator Engineering Manager Responsible Person (Title): Currently Held By (Person): FirstName: Cody Telephone: Organization: Mailing Address: City: LastName: Kerrigan (720) 361-2551 Email Address: ckerrigan@outriggerenergy.com Outrigger DJ Operating LLC 1200 Seventeenth Street Suite 900 Denver 4) *BILLING CONTACT if different than the permittee. Same as 1) Permit Operator Responsible Person (Title): Currently Held By (Person): Telephone: Organization: Mailing Address: City: VP Accounting State: CO Zip Code: 80202 FirstName: Marshall LastName: Olson (720) 368-7309 Email Address: molson@outriggerenergy.com Outrigger DJ Operating LLC 1200 Seventeenth Street Suite 900 Denver 5) OTHER CONTACT TYPES (check below) Add pages if necessary: Responsible Person (Title): Currently Held By (Person): Telephone: Organization: Mailing Address: City: Director of Land State: CO Zip Code: 80202 FirstName: Trent LastName: Taylor (720) 361-2575 Email Address: ttayloroutriggerenergy.com Outrigger DJ Operating LLC 1200 Seventeenth Street Suite 900 Denver Environmental Contact Inspection Facility Contact Consultant Compliance Contact Outrigger DJ Operating LLC - 08:25:00 - 06/14/2018 State: CO Zip Code: 80202 Stormwater MS4 Responsible Person r-- Stormwater Authorized Representative a18bbO91-i0 be6-4ef7-af4a-89a8d07a9c7d SW Construction Application for: Outrigger DJ Operating LLC 06!14/2018 page 2 of 5 DocuSign ig n Envelope I D : 5C2 78560-98 E4-4 F77 -A85 3-8 B4F D 54D6090 B) PERMITTED PROJECT/FACILITY INFORMATION Project/Facility Name Street Address or Cross Streets Outrigger DJ Operating Project North Central Weld County (e.g., Park St and 5 Ave; CR 21 and Hwy 10; 44 Ave and Clear Creek) ; A street name without an address, intersection, mile marker, or other identifying information describing the location of the project is not adequate. For linear projects, the route of the project should be described as best as possible using the starting point for the address and latitude and longitude - more clearly defined in the required map ) City : Briggsdale & Keota County: Weld Zip Code: 80611 Facility Latitude/Longitude - List the latitude and longitude of the excavation(s) resulting in the discharge(s). If the exact soil disturbing location(s) are not known, list the latitude and longitude of the center point of the construction project. If using the center point, be sure to specify that it is the center point of construction activity. The preferred method is GPS and Decimal Degrees. Latitude 40 68352 Longitude -104 13011 (e.g.,39.70312° 104.93348°) Decimal Degrees (to 5 deci ma I places) Decimal Degrees (to 5 decimal places) This information may be obtained from a variety of sources, including: • Surveyors or engineers for the project should have, or be able to calculate, this information. + U.S. Geological Survey topographical map(s), available at area map stores. • Using a Global Positioning System (GPS) unit to obtain a direct reading. + Google - enter address in search engine, select the map, right click on location, and select "what's here". Note: the latitude/longitude required above is not the directional degrees, minutes, and seconds provided on a site legal description to define property boundaries. C) MAP (Attachment) If no map is submitted, the application cannot be submitted. Map: Attach a map that indicates the site location and that CLEARLY shows the boundaries of the area that will be disturbed. A vicinity map is not adequate for this purpose. D) LEGAL DESCRIPTION - only for Subdivisions Legal description: If subdivided, provide the legal description below, or indicate that it is not applicable (do not supply Township/Range/Section or metes and bounds description of site) Subdivision(s): Lot(s) : Block(s) OR r Not applicable (site has not been subdivided) E) AREA OF CONSTRUCTION SITE - SEE PAGE 1- WILL DETERMINE FEE Provide both the total area of the construction site, and the area that will undergo disturbance, in acres. Total area of project disturbance site (acres): Note: aside from clearing, grading and excavation activities, disturbed areas also include areas receiving overburden (e.g., stockpiles), demolition areas, and areas with heavy equipment/vehicle traffic and storage that disturb existing vegetative cover. Part of Larger Common Plan of Development or Sale, (i.e., total, including all phases, filings, lots, and infrastructure not covered by this application) F) NATURE OF CONSTRUCTION ACTIVITY Check the appropriate box(es) or provide a brief description that indicates the general nature of the construction activities. (The full description of activities must be included in the Stormwater Management Plan.) Commercial Development Residential Development Highway and Transportation Development Pipeline and Utilities (including natural gas, electricity, water, and communications) Oil and Gas Exploration and Well Pad Development Non-structural and other development (i.e. parks, trails, stream realignment, bank stabilization, demolition, etc.) Outrigger DJ Operating LLC - 08:25:00 - 06/14/2018 a18bbO91-6 be6-4efl-af4a-89a8d07a9c7d SW Construction Application for: Outrigger DJ Operating LLC 06/14/2018 page 3 of 5 DocuSign ig n Envelope I D : 5C2 78560-98 E4-4 F77 -A85 3-8 B4F D 54D6090 G) ANTICIPATED CONSTRUCTION SCHEDULE Construction Start Date: 07/01 /201 8 Final Stabilization Date: Ongoing • Construction Start Dote - This is the day you expect to begin ground disturbing activities, including grubbing, stockpiling, excavating, demolition, and grading activities. • Final Stabilization Date - in terms of permit coverage, this is when the site is finally stabilized. This means that all ground surface disturbing activities at the site have been completed, and all disturbed areas have been either built on, paved, or a uniform vegetative cover has been established with an individual plant density of at least 70 percent of pre -disturbance levels. Permit coverage must be maintained until the site is finally stabilized. Even if you are only doing one part of the project, the estimated final stabilization date must be for the overall project. If permit coverage is still required once your part is completed, the permit certification may be transferred or reassigned to a new responsible entity(s). H) RECEIVING WATERS (If discharge is to a ditch or storm sewer, include the name of the ultimate receiving waters) Immediate Receiving lNater(s): Crow Creek, Upper Sanborn Draw, Greasewood Lake, Upper Wildcat Creek Ultimate Receiving Water(s): South Platte River Identify the receiving water of the storrnwater from your site. Receiving waters are any waters of the State of Colorado. This includes all water courses, even if they are usually dry. If stormwater from the construction site enters a ditch or storm sewer system, identify that system and indicate the ultimate receiving water for the ditch or storm sewer. Note: a stormwater discharge permit does not allow a discharge into a ditch or storm sewer system without the approval of the owner/ operator of that system. Outrigger DJ Operating LLC - 08:25:00 - 06/14/2018 SW construction Application for: al8bbO91-0 be6-4efl-af4a-89a8d07a9c7d Outrigger DJ Operating LLC 06!14/2018 page 4 of 5 DocuSign Envelope I D : 5C2 78560-98 E4-4 F77 -A85 3-8 B4F D 54D6090 I) SIGNATURE PAGE 1. You may print and sign this document and mail the hard copy to the State along with required documents (address on page one). 2. Electronic Submission Signature You may choose to submit your application electronically, along with required attachments. To do so, click the SUBMIT button below which will direct you, via e-mail , to sign the document electronically using the DocuSign Electronic Signature process. Once complete, you will receive via e-mail, an electronically stamped Adobe pdf of this application. Print the signature page from the electronically stamped pdf, sign it and mail it to the WQCD Permits Section to complete the application process (address is on page one of the application). + The Division encourages use of the electronic submission of the application and electronic signature. This method meets signature requirements as required by the State of Colorado. • The ink signed copy of the electronically stamped pdf signature page is also required to meet Federal EPA Requirements. + Processing of the application will begin with the receipt of the valid electronic signature. STORMWATER MANAGEMENT PLAN CERTIFICATION By checking this box "I certify under penalty of law that a complete Stormwater Management Plan, as described in the stormwater management plan guidance, has been pre -pared for my activity. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the Stormwater Management Plan is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for falsely certifying the completion of said SWMP, including the possibility of fine and imprisonment for knowing violations." "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief, true, accurate and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." "I understand that submittal of this application is for coverage under the State of Colorado General Permit for Stormwater Discharges Associated with Construction Activity for the entirety of the construction site/project described and applied for, until such time as the application is amended or the certification is transferred, inactivated, or expired." [Reg 61.4(1)(h)] aocusigned by: For Docusign Electronic Signature � awd� Purkm, 984Fri B598454 9iF.,, Signature of Legally Responsible Person or Authorized Agent (submission must include original signature) ature Date: 06/14/2018 Andrew Perdue Senior Project Manager Name (printed) Title Signature: The applicant must be either the owner and operator of the construction site. Refer to Part B of the instructions for additional information. The application must be signed by the applicant to be considered complete. In all cases, it shall be signed as follows: (Regulation 61.4 (lei) a) In the case of corporations, by the responsible corporate officer is responsible for the overall operation of the facility from which the discharge described in the form originates b) In the case of a partnership, by a general partner. c) In the case of a sole proprietorship, by the proprietor. d) In the case of a municipal, state, or other public facility, by either a principal executive officer, ranking elected official, (a principal executive officer has responsibility for the overall operation of the facility from which the discharge originates). 3rd Party Preparer: If this form was prepared by an authorized agent on behalf of the Permittee, please complete the field below. Preparer Name (printed) Email Address DO NOT INCLUDE A COPY OF THE STORMWATER MANAGEMENT PLAN DO NOT INCLUDE PAYMENT AN INVOICE WILL BE SENT AFTER THE CERTIFICATION IS ISSUED. *** ELECTRONICALLY SUBMITTED STORMWATER CONSTRUCTION APPLICATION *** Outrigger DJ Operating LLC - 08:25:00 - 06/14/2018 a78bb091-0be6-4ef7-af4a-89a8d07a9c7d SW Construction Application for: Outrigger DJ Operating LLC 00/14/2018 page 5 of 5 DoeulSign Envelope Iii: 50278560 -98E4 -4F77 -X853 -&84F05406090 i SIGNATURE PAGE You may print and sign this doormat and mail the hard copy to the State along with required documents (address on page one). 2. Electronic Submission Signature You may choose to submit your application electronically, along with required attachments. To do so, crick the SUBMIT button below which will direct you, via e-rnaln r to sign the document electronically using the DpcuSlgn Electronic Signature process Once, complete, you will receive 'ia e-mail, an electronically stamped Adobe pdf of this application, Print the signature page from the electronically stamped pdf, sign it and mail it to the WQCD Permits Section to complete the application process (address is. on page one of the application). The Division encourages use of the electronic submission of the application and erectrank signature. This method meets signature requirements as required by the State of Colorado. • The ink signed copy of the electronically stamped pdf signature page Is also required to meet Federal EPA. Requirements. Vt • Processing of the application will begin with the receipt of the valid electronic signature. STORMWATER MANAGEty'"iENT PLAN CERTIFICATION By checking this box "I certify under penalty of law that a complete Stornwater Management Plan. as described in the stormwater management plan guidance, has been pre -pared for my activity. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the Stormwater Management Plan is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for falsely certifying the completion of said SWfiviP, including the possibility of fine and imprisonment for knowing violations, °'k certify under penalty of law that this document and ell attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the systems or those persons. directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief, true, accurate and complete, am aware that there are sIgniflcant penalties for submitting false information, including the possibility of One and imprisonment fo.r knowing violations."" understand that submittal of this application is for coverage under the State of Colorado General Permit for Stormwater Discharges Associated with Construction Activity for the entirety of the construction site. 'project described and applied for, until such time as the application is amended or the certification is transferred inactivated, or expired.," [Reg 61.4(lflh)1 —©oeuaigned bra For Docusign avas Electronic Signature Ptv4r44jgnature FOar►9a:A t.9F _, Date , 06/14/2018 Signature of Legally Responsible ' ersan or Authorized Agent (submission must include original signature) Andrew Perdue Name (printed) Senbr Project Manager Title Signature: The applicant must be either the owner Alid operator of the construction site. Refer to Part 8 of the instructions for additional information, The application must be signed by the applicant to be considered complete.. to all cases, it shall be signed as follows: (Regulation 61.110e0 a) In the case of corporations„ by the responsible corporate officer is responsible for the overall operation of the facility from which the discharge described In the Form originates b) In the case of a partnership, by a general partner. c) In the case of a sole proprietorship, by the proprietor, d) In the case of a municipal, state, or other public facility!, by either. a principal executive officer, ranking elected official„ (a principal executive officer has responsibility for the overall operation of the facility from which the discharge originates). 3rd Party Preparers it this form was prepared by an authorized agent on behalf of the Perimittee, please complete the field below. Preparer Name (printed) !mall Address DO NOT INCLUDE A COPY OF THE STORMWATER MANAGEMENT PLAN DO NOT NNCLUDE PAYMENT -AN INVOICE WILL BE SENT AFTER THE CERTIFICATION IS ISSUED. ** ELECTRONICALLY R0NICALL UBMITTED STORMWATER CONSTRUCTION APPLICATION *** Outrigger DJ Operating LLC - 08:25:00 a 06/14/2018 7 8bb091-0be -4et (-af a-8' 8d 07 c7r 5* tonstmci I oin Apptica; Con for; Outrigger DJ Operating LLC 06!14/2018 j-t,age i fir % Outrigger DJ Operating Project SWMP I Weld County, Colorado Outrigger DJ Operating LLC I Weld County, Colorado Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Attachments and Site -Specific Information Attachment 3 SWMP Records Spirit Environmental, LLC 18350.OOA June 2018 8-4 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Attachment 4 Makena Gas Plant Spirit Environmental, LLC 18350.00A June 2018 8-5 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Site Description 1.0 Site Description 1.1 Nature of Construction and Site Description The operator is constructing a gas plant and associated structures east of Briggsdale, Weld County, Colorado ("Site"). The Makena Gas Plant with consist of various compressors, skidded process equipment, pipe racks and supports, vessels, tanks, a utility flare, and miscellaneous utility buildings. The areas surrounding the facility components will consist of gravel -surfaced yard areas and driveways. The Site is located southeast of the intersection of County Road 83 and West Highway 14. A site map of the project is included at the end of this Attachment. The entire site, which includes areas where construction support activities occur, is approximately 80 acres which are included under the scope of this SWMP. The main area of excavation and soil disturbance will occur on 28 acres in the north central portion of the parcel. Areas outside of the project boundary are not included under the scope of this SWMP and are also not under the operational control of the operator. The operator has prepared a site map that is included at the end of this Attachment, which will be updated by the operator during construction activities. The site is an undeveloped field and is bounded on the north, south, and west by similar undeveloped fields, and on the east by a dirt road. The site is gently sloping down from north to south with maximum elevation difference across the entire site of about 35 feet. However, the elevation difference within the proposed gas plant footprint is about 10 feet or less. Per the Kumar & Associates, Inc. Geotechnical Engineering study "Subsurface conditions encountered in the exploratory borings generally consisted of a few inches of soil containing rooted matter underlain by bedrock in six of the borings or by native predominantly clayey overburden soils extending to bedrock at depths ranging from about 1.5 to 4 feet in the remaining borings. An approximate 1.5 -foot -thick zone of native granular soils was encountered above the bedrock in Boring 2. The native overburden soils were predominately clay soils consisting of slightly moist to moist, light brown to brown, lean clay to lean clay with sand. The native clay soils contained a fine to coarse grained sand fraction. The 1.5 -foot -thick layer of native granular soils encountered in Boring 2 consisted of fine to coarse grained, slightly moist, brown, clayey sand. Based on sampler Spirit Environmental, LLC 18350.OOA June 2018 8-6 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Site Description penetration resistance, the clay overburden soils ranged from very stiff to hard with isolated cemented areas, and the granular overburden soils were medium dense." Existing vegetation at the site primarily consists of sparse native grass and shrubs. Preconstruction the site has 100% vegetative cover. During construction stormwater runoff will flow south to the detention basin and will be discharged from an outfall at the west end of the pond. From the outfall stormwater runoff will continue west to the Crow Creek. Allowable non-stormwater discharges from this site will be consistent with the list provided in Section 2.4. 1.2 Potential Pollutants and Locations Potential pollutants from construction activities and equipment utilized at the Site may be encountered. Sediment is a potential pollutant from these construction activities and erosion and sediment controls will be installed and maintained to reduce the potential of sediment in runoff from construction activities. Equipment stored onsite will be inspected for signs of spills and leaks. Building materials and/or chemicals (such as paint, stucco, concrete products, etc.) will be stored in closed containers and/or undercover to reduce the potential for comingling with stormwater runoff. Concrete washout from paving operations will be contained as described in Section 4.7. Solid waste, such as general non -hazardous trash and scrap from building materials, will be stored in an onsite waste disposal bin. Additional potential pollutants that may be encountered during construction activities are listed in Table 1-1. Spirit Environmental, LLC 18350.OOA June 2018 8-7 Outrigger DJ Operating LLC Construction General Permit Storm Water Management Plan Site Description Table 1-1 List of Potential Pollutants Potential Pollutants Source Sediment Construction and construction activities support Oil and grease Construction equipment onsite Total Petroleum hydrocarbons Fuel in aboveground storage construction vehicles tanks and Metals Buildings materials and equipment TSS, Paint, (such stucco, concrete, as metal piping) and/or building materials Construction tanks, and of buildings, foundations, process vessels General non -hazardous trash Construction activities and construction support 1.3 Construction Schedule Construction of the Makena Gas Plant will commence in July 2018 with final stabilization and operations anticipated to start in March 2019. Construction will generally progress as follows, with simultaneous phases of construction underway at different stages: • Installation and subsequent maintenance of erosion and sediment controls and BMPs; • Grading of the lots; • Installation of piping and ancillary utilities; • Installation of a concrete foundation; • Vertical construction of the individual sites; • Construction of detention ponds and piping to the drainage ditch; • Completion of siding and insulation installation and painting of the exterior and the connection of utilities; • Installation of sidewalks and/or drainage facilities; • Installation of sod and stabilization practices, such as seeding; and • Removal of erosion and sediment controls and BMPs. Spirit Environmental, LLC 18350.00A June 2018 8-8 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Site Description 1.4 Site Specific BMPs The Makena Gas Plant will utilize hay swaddles, gravel at vehicle access points, and a stormwater detention pond. These BMPs are shown on the site map and described in further detail in Section 4.0. 1.5 Materials Handling and Spill Prevention BMPs will be implemented to minimize impacts from construction procedures and significant materials handled at the construction site. Primarily the Makena Gas Plant will rely on good housekeeping practices and facility inspections to prevent and detect spills, leaks, or an unauthorized discharge. Should a release be detected at the site it will be immediately reported to the SWMP Administrator who will implement the appropriate response procedures. 1.6 Site Stabilization Areas without pavement or building at the Makena Gas Plant is be stabilized with gravel following construction. A detention pond will be built during construction and will then be maintained as a permanent stormwater control at the facility. Spirit Environmental, LLC 18350.00A June 2018 8-9 GRADING LEGEND E C,aI.1TIrtN - EXISTING BURIED PIPELINES 1V UNKNOWN DEP S FIELD VERIFY LOCATION -----4`i?i----- EXISTING GROUND TNT. CONTOUR [1' INTER\+AL] -¢•5Ci_- EXISTING GROUND INDEX CONTOUR [5' INTERVAL] DEPTH PRIOR TO cCf4STRU.^,noN I'FJ gaga. r4J !e. yr— PrYrE� .w ,vY ifa w } de AY,tneALfL �Y 48O1 FINISH GROUND INT. CONTOUR [1' INTERVAL] f-� P le.cff. 572.1 .lr-!7-+!-f' .,�I! !15 IHl—ii-i'-r.`! f--•1—nef--,04-ft-:'r—.rt—e1—fF—ft-r-r't—IS—i!—•1f—'! /f�+,�f/ 4 -,te-r. to- fH,,,c. ,r, �Y-,•.+'-if—.rr�x�./,r—m—.-f /CHI_ �Ht--ll dr-Yr•-�' 4800 FINISH GROUND INDEX CONTOUR [5 INTERVAL] .� ! r,Y .i-,•r_ii.. • ..+—� 407-1 --r 1--r-,9-yf- �fl-r-=r; — — — — . —1 — . — . — — — — — — — ` •fir. . ,, -� —� — • — — — —� - — _ , . — — r — ?°� r rT� �:. �, "� PROP. SLOPE ARROW [ HORIZONTAL TO VERTICAL) -- - - �'` WELD COUNTY ROAD 8,5 ', ` ✓✓ !' / •• .'.°°m .. -7 - {---'-_— _ __ -__ --- —-';— �;-•rl r, I,r '', \' — L —r ^ — — — � '' -7 FINISHED GROUND SPOT EL u; — •— . —•—', — — —I — — — —,y — --' —r- -- - T i Fo-4ebe.za ti, fr,r � / Boundary —'''. ii,— . - — j r T r tr 4 GB .1.3.5&26- (',BADE BREAK SPOT EL ' � ,r:' '- � Oval t4 nini 11i�C vehide tracking },_ r I. ,, • I 1 / r 1 r s. i.. .' r ter rTZ— I I I --4'f-1 ti. h kLE: 488826 hIATGH EXISTING SPOT EL. :S :,,--/-:•,,i-.r. - �'r—,`,,—„ _.! _ f- - t.,• r �^• —,r 1��:�f. _ �—•' �- ' r �� --- !-r I /' �' = '' /' --' ✓ / li r I II P •I '' y' I I 7" I I `%1'-x--- -.. PD1E74TI4L WATER WELL I I 40 LacAnON (PERMIT) no' (Twj — — �_ !— A1DE, 2' DEEP DRAINAGE F r ; 1 ' CHANNEL. TEL 4t1 9DESL9PE5 1 J (NEED TO LPOATE CP.AINAGE ' ' } C9�7J CALCS TO +rFFdFY CHANNEL / Rr, i + Ago 5tr SECTIONS. 5f(�` t a� � I eoao — 4 E-4068,28 FLO1kLINE SPOT EL. ' '' q h E - M1 2f EXISTING GRADE i I II YI i —"— ' '—' '—' '— ' — PROPOSED S'A'ALE/CHANNEL CENTERLINE _ _ POTENTIAL WATER ; .., {{ys �s ; „ ,. . �., ,o. �. PROPOSED TOP OF BERM CENTERLINE r WELLLOCA.TICtN l — — j 1 I I ttz=¢—�•-=- L y, (PERMIT APPLICATION) —� - - �4 +� L� U STRUCTURE F.E.S. I 5015 73g— , I LENGTHS F GLODE F.E.S.T POTENTIAL WATER WELL r -� -�� ..---.�... _ S _ .. '` ti +: LOCATION (ZAP 2p I I :' a" � x— x.� x "� bye 5'07I \ N •` NORTH P.M ,: Btt1NDARY• I I I I BACKGROUND) 1 ry "t' { T.�.\..C\. 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".'...'.'.'.'.'..'.'.'::::. ff:.................................... •• .................. •• •• •• •• •• •• •• •• •• •• •• •• • .. ..... • • :::::::::::::::::.. • • ':::.'.'.'••••I•I•••••.'.'.{L .........•.•.•.•.�<-:'.•...: •:.^~::—,.,.• • .................................... . ...................................:................. ..'.'.': :::::::::::...,......... ..'.'.'.'.'.'.'.'.'.'.'.'.'.'.......,.............:.,'::::.'.'.'.'.'.' ....::.::.:. jI 454 } t ti I ti ti There Oro no dedicated concrete washout areas_ Silt fencing and hay swaddles will not be used at this site. ( y rI l•,r. 1 � 1-. r.: �� .'.'I ..'. '..'.'.'. ,..........Q.....Q_,............ 'c ++ :::.::: v �':: • •::::::::..'.'., .'.'.... '..'.............. ............................. 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J / f /' r $ • ( ti \ I IL y 4 IL 11 ! 1 f ! • • it c „r15 L / ! 14 11 / fI add w / �/ / r I r \ j % I ! 1I / \ ../ f [�Irr 'AC: -- Y WE BERM 9: ti I z / w � .-� �.1 f i a t a i t r f 1 _ rF i-•�'S:\ 1`J = O ''•- •-' / r All r} x,• J! - `` 1. •-Y .•- - , ✓ / 'r ..- y r y0Y 1d. rr fr N'5� s : µ - �- _ _ f - . r T .y Ci�P DI"7r c' UNITS f I YY) • y7 I I I ilk ' f 1 r t� 1,• r� f ~ r''` Ir J / .f f _ _ 7 f / ..- ''� gD11 �11U r 5 POND OUTFALL - - � + - s3 LF 12 RCP AT i.iX I {ASSUMED S12E L9RE) - _ LS' YAK 2' DEEP DRAINAGE ..-;60 B" - _- _ - - I .CHANNEL. 4:1 SIDL5LOPE5 _ _ ____ QQL TO 4EERIFY C A ATE NELE .. l MCTICN& _ -- _ _ .r — _ -- J•� J• .— — — r` r' ` �._- /r �rF — l r._ _ —_ 7 ...- = — — — - _ / f �- rr f r — r��`= , + 1 t, k,y r ----- ..- 4^ 1 _ - - OFTEN - -- -- - EN 0 --CCNOR & BU __ p 5/ WOE DRAINAGE CHA — - (POND CUTFALL _� ~' 0-.. r/fir _ s.- r' � r r{ r _ ON POND / f / / I I 1 V WI r f // / / 1 1 TE CUTOFF WAIL r' / f / / / / ED F]PRAP - / l 1 / 1 re —ter r/ .+'f / 1 1 / / / / / �' I f if --s r /III /1 I I rI/I I ✓ / re. // ✓1 ,1 }I / ✓ EL _ - r' r ' r /'r f I r / / / / r/ �/ / l /rY II II 1✓ r !er / / r r� Jf F / / �1 / r r = rt // errf/ //' / /' f J }/ �-- / re' / r / / / / / / fr / . / / / / / ^./ /' ✓ / �r / ! l ` r' f / f i j / f r / Construction Site Boundary \• ,. 1 i f r :-- g�9 YES. U t o. I( ' '-• �. _ _ = r a0LN0ARY t* �• r \ �- — ! " .,`t �l / I-' / { / / r f f }f r / f f I !R EMI 47Yff MI0g157O1 UTILITY t#ytFt h11iJN OMB {f G I CF{460 - 811 II { �.n � 'I " �' F r / r I ,. :.,-:- ..-6. . 1 5r^ �..` -r' r' / ` _ td RJ}.�' ', .-Ilh+(rS r i ', '1 f AT LEO TA ) BLISNESS / II ', ! f t " '' ( i'• .,. / f r' �'.� 1 r' ` . ; — - - PR I ! .1 f 1 f rX r r .d`, f LIf IN ►R f I�+IC?T Ft R ON TRU TION oA ,� „��G d THIS DRAWING HAS NOT BEEN PUBLISHED BUT RATHER HAS BEEN PREPARED BY ZAR ENCINEERING & CONSTRUCTION SEFMCESE INC. FOR USE BY THE CL ENT MIMED IN THE TILE BLOCK SOLELY IN RESPECT OF THE FACONSTRUCTION,10N ANCE OF D SHALL CIL1IYNA ED IN 1HETITLE BLOC AND NOT OE USED FOR ANY OTHER PURPOSE OR FURNISHED TO ANY OTHER PARTY WITHOUT THE EXPRt CONSENT OF ZAP ENGINEERING & CONSTRUCTION SERVICES, INC. REFERENCED DRAWINGS DRAWING REVISIONS TUDOR awr:+la a coo IIItU rlOpl SaINIICIIIIL woe MAK ENA GAS PLANT CONCEPT GRADING DRAWING NUMBER TITLE REV DESCRIPTION BY CHK APVD DATE A ISSUED FOR CONCEPT GRADING REVIEW LJM JME 04/30/16 f 16-= 3R3-9A?-6II3 orarn-rimillsoom 1 L h T ' Lf n G' !� B ISSUED FOR CONCEPT GRADING REVIEW UM JME 05/09/18THE C ISSUED FOR CONCEPT GRADING REVIEW LJM JME 05/18/1B JOH NO: 18044 D ISSUED FOR CONCEPT GRADING REVIEW L IM LIME 05724/18 DRAWING NO: 18044-003-1003 REV: PLOT SIZE:ANSI D SCALE:AS SHOWN D �`moy + I I t III 4CEY MA[' II I III HlfiHWAY 1 I i /i ti I I 11 I y III o I! S �/ I �> =' I,J is - I'JN 'r.> ;•`•`=`,. 1` Uei my:v:.*: I r.. C M /I ..1 I r 4i I/ / I CAJJiicN - POTENTIAL FOR E9STING @URIE4 FiPElJN ; � I ,'" 1 I I: -I I'IS?1 USR ao N.T.S. o a d '1 I I I ' I I JrCAunON - CASTING BURIED PIPELINES W} / I r o p� J6 OEM FRIER TO °DNS-TRE ("TIM / ...-s... BOUNDARY MP) UNKNOWN DEPTHS Y- I Q ; FIELD VERIFY LOCATION J ) r. e I Ill & DEPTH FRICR / / GRADING J / n 1'I I' I i 1 TO CONSTRUCTION t<f — E?IISTINc QVEAHEAD ONES & POWER POLE P045ER POLE TO GEBY OTHERS) i - I I ', I I 1 I III I II I¢EA��' ` LIMITS {Y/P} 01:1CAUTION + - o /r _ _ _ _ _ - _ _ _ - g �f s / in / v �. c r PI ra ',) k f / : `'��' ' Y:'° ,�:•,. m m - Fl I?k a —ri ;f'y�� I '� .- S. r - —r + —. x — --, rr — COUNTY ROAD ` _h -1-'0,‘"-—WELD _S_ ....- rt - ,• sair— S �� I �� ,_ -- - - - �5 • • • •L cV1°' � I „e....„.„...,--• 1 I- 1 _ ' s+� a m GRADING LEGEND • I 1 1 cor ,otoo , —_ Mid 12 i J I �u 5 '°f.1 5023 ~`0 2,1 SO . --.-_ T .i t ' 'f� __ p2a l.f = Y-- .....�...... I EXISTING GROUND INT, CONTOUR 1 INTERVAL] a _ — — �__ ---- [ - - - - - - _rte --- -- ---- _,_7_71---2.0-275::".____________:.801 I - ..-.— - y — --------- _ u ^- — ——_ — -�- -1 —. _ �� ti-. _= - - — -4.n — — EXISTING GROUND INDEX CONTOUR [5' INTERVAL] ,� Tel-i I �!— r — -'— '-___-------66 ___�---.r..:-_ LF-T8' RCP AT 0.488 --- - ------ __ -~-- -- _ _-"7"— -_ —_ -- ----- -- _ :' = i r+Y ' - - - - - - 4841 FINISH GROUND INT. CONTOUR [1' INTERVAL] {ASSUMED 512E(SLOPE} 1*--, 1 I + 1 _ .l . f -J Raw .. •. k-ct I + I CAUTION - EXGTING -`-,. ` ' lic N+AY 4600 FINISH GROUND INDEX CONTOUR [5' INTERVAL] f�1 ---504-5 I I I I I III o '' BURIED RIFEIINES UNKNOWN DEPTHS Wf `� rr~ ~�--�� "- rlxrXr~ a' b r w " 104 ,c1 PROP. SLOPE ARROW HORIZONTAL TO VERTICAL) I FIELD VERIFY LOCATION -..� `--_t4(E� AR41�1E0 t ('l� -wall rr oco1HFI CONSTRUCTION -xrrrYr ''`` �`----- ` nslr FLAW DIRECTION ARROW l I hi' - - ~ �- �r� elf-�+l--fi-- !/--f el -a- s FG=4@8@.28 FINISHED GROUND SPOT EL. ! 1-41-7( p F-�C !i-� �-h--tf-ft-- -Yt-fl -i-lr-lJ-f � ta-�t-df--, H �-, r - /f-�7�Y--II A' tt-- i-irA�-i - fr��- 1-lf- f1 -?t--7 11-r, -rte -r -i -{f-f t-,rf- .mil--{f�l-f--,l�t� i--;t-rr�;-r III -rill I ui "�'� rx %* � _ / ;' -' _ ," fif , C 4BBB.26 GRADE BREAK SPOT EL 4 M.E.-4-868.26 MATCH EXISTING SPOT EL III I I V I I Io ' ++i'' _ ' .fi/' / / CAUTION - Ek7ST1Ny BURIED PIPELINES Wf UNKNOWN DEPTHS FIELD VERIFY LOCATION I 4 E-+@6@.26 FLCWLINE SPOT EL. r 5 +FG=A, EXISTING GRADE I I ICAUIIDN - ExISTING UvIIiHE40 ELEOTRIC V / f• f DEPTH PRICK .TQ OONSTRIJO ION 1 1 I w 'I-____ i / -.•• -- • -.•• •-•• PROPOSED SWALE/CHANNEL CENTERLINE II I i' r - - / PROPOSED TOP OF BERM CENTERLINE I � II I I i Il I �l W � LENGTHSUINCLRUOOUTLET STRUCTURE & F.E.S. LJ w Li) w SURFACING LEGEND z J 1 1 ROAD - 12" THICKNESS I = _-- J 1AcGRE ATE BASE] r...........--� PROCESS AREA - 8" THIchNESS L_ -_----J [1.5" MINUS GRAVEL] l- L J TOPSOIL/RE—VEGETATION — 3- DEPTH (ASSUMED) t RIPRAP EROSION PROTECTION — 22.5' DEPTH (ASSUMED) 5045 WELD COUNTY ROAD 85 PROFILE °' I N r I?r- BURIED RIPRAP PROTECTION — 24' DEPTH (ASSUMED) I 5045 5040 - 5040 5035 " j 5035 od? L.P.-91 LP, MEN 5+02.-11 52333 + PM STA; ! 5t0040 II PM ELEV. 5D23.1+ 1-2,11 II: LVO 68.tCa $ ti I 8 2 5030 �s 5030 1 in K e4 O 2 E d PR GROUND ATti _ f � ROAD CENTERLINEp,90X - _ r _ -- �ti� -1. ��_��"' 5025 ��__ �� 5025 - --~-~--~-- ----�� - - STCJRN X -IN? (18" RGP ASSUMED) EXIST •24'01.400 �AT�} 5020 5Tk 2+50.00 TrO.P. ELEV: 502406 Rom (ZWEWLAVE 5020 iZ ----gte3 5015 • r to r- h sr o sr m e' m ,t Iti hen ,r 1 7 n 4 I 26 J56 r 100' ��CF I,(WRADO � �+ ecii el ;:;111. N ca N N MTV t# 1FK A N SENO �1 34 5S o a o 0 0 O 0 0 0 O It) It? Ih �, u� II) In In in in In VERTICAL SCALE: T"=5`a='f [ •6-•.- 0+00 1+00 2+00 3+00 4+00 5+00 6+00 7+00 8+00 9+00 10+00 11+00 PRELIMINARY ATlEAST ir 12}aDIEsS NOT FOR CONSTRUCTION °NWi.�?DJ� I; TMAK THIS DRAWING HAS NOT BEEN PUBLISHED BUT RATHER HAS BEEN PREPARED BY ZAP ENGINEERING & CONSTRUCTION SEFMCESE INC. FOR USE BY THE CUNT NAMED IN THE TILE BLOCK SOLELY IN RESPECT OFB OF THE FACT CONSTRUCTION, NAME OPERATION AND MAINTENANCE AND SHALL THE FACILfIY NAMED IN THE ME BLCCI4 AND SHALL- NOT OE USED FOR ANY OTHER PURPOSE OR FURNISHED TO ANY OTHER PARTY WITHOUT THE EXPRt. CONSENT CIF ZAP ENGINEERING & OONSTRUCT ON SERVICES, INC. REFERENCED DRAWINGS DRAWING REVISIONS• 1 LICIMte$SC IL C V MSNBVCSIPON IWCR UNWPttI- we ENA GAS PLANT 85 PLAN 8e PROFILE DRAWING NUMBER TITLE REV DESCRIPTION BY CHIC APVD DATE A ISSUED FOR CONCEPT GRADING REVIEW LJM JME 40`30/18 Da �`.- 303-997-6I13 ernma+I"TJunm CiU TRIGGER ENERGY � ass.! ISSUED FOR CONCEPT GRADING REVIE'A' UM JME 45/09/18 C ISSUED FOR CONCEPT GRADING REVIE'A' Why JME 05/18/1B JOB NO: 18044 D ISSUED FOR CONCEPT GRADING REVIEW LJM LIME 05724/18 DRAWING NO: 18044-0O3-101 G REV: PLOT SIZE: ANSI D SCALE:AS SHOWN D KEY MAP ,r f' — - HIGHWAY 14 ~- 1 �, f I , j' / fr, { f'r �' / - 15 •T:, ;...`= rim ;' � 1 / .7" 1. / r 40r #. rr' 1'" i i 1 I I 1`f —I I 'Is•:a' LISR N,T.S. CWJTION - POTENTIAL FOR E2 5T1NG BURIED PIPELINES EXISTS W./UNKNOWN DEPTHS F ,' / , ! 601 BOUNDARY (TVA) r FIELD VERIFY LOCATION I A ( J ' I LFC 1B� RCP rj k DEPTH PRIOR r - ' TO CONSTRUCTION (59 ASSUMED g? i I / kODITl!7NAl SURVEY ' ? f •O f 4nr A I p J LDETERMINE — — —'- - WELD COUNTY ROAD 85 `I / - — — — — —•• — — -- t--- rr- — — — . .—•— — — -- — —__� �•— —. —— . —• -- n— -— — — -- �•— —•—•— "tic. - — - '��6p,2. -- .�:-� - — — — m Jsozs ,� &° a — '!t 0D�- "" f '"' , ,a.� L i�30"1 __. �022 ---- GRADING LE GEN D �� _tom i I -_— -------- — `- - - -_ - — — -Aga(- - EXISTING GROUND INT, CONTOUR [1' INTERVAL 72-,...-7-7_347-43.7--,--r—_ _ _ ------- -- _ -- — — —4b11.� — EXISTING GROUND INDEX CONTOUR [5' INTERVAL] • — • • — — --- .S` — — — — — — — — — — — — — t` GRADING 14 — — L..:I 4801 FINISH GROUND INT. CONTOUR [1' INTERVAL] /r� AI uM1T5 Cry) 1\ ` y� J ?} G% tr* M 4600 FINISH GROUND INDEX CONTOUR [5' INTERVAL] :• t 't. o rrF• `''\v./ c tilt '' 4 ,gi ''� � 1 PRCP. SLOPE ARROW (7 HORIZONTAL TO VERTICAL) f/i � Y I I i/ I 1!-,'.—+i-0---fl--e/-tf/--rf-Y---W-ii-fl.,-W-0-it-ii-0-1-fA- ii-f.i-,•'r- -, 4-,' / .// f-tC4-0-{E-0-1,--i1-#-s,--t,-if-ii-/ -sA-4,4-,44-,Y-/ :E-4.a-ii-„ +FG=4866.28 FLOW DIRECTION ARROW FINISHED GROUND SPOT EL. +- ii-ti--,i-e}-li--W-W- he--W--I}-2Q-B-rf-#--Lf-,'f-11 ^ 1 // / ;' , „I starry) - - - - I ,C4-fir--0-dt•-i,c--W-+1--11--ii-,`l-'f--W-{t-n--,•s- / I • I dBBB-213 GRADE BREAK SPOT EL / ' L •1 j i tt'1 / ti J� p 5 r' i I 11y / 1/ I J S f I CAUTION - DcST1NG HIRED PIPELINES N'/ UNKN041FJ DEPTHS FIELD VERIFY LOCATION EE DEPTH PRICE( TO CONSTRUCTION 4 M.E-4811828 a E0613.2.6E0613.2.68 5 t EE=�ae MATCH EXISTING SPOT EL FLt3WLIME SPOT EL. EXIS11NG GRADE I i I I f X11' I/ ti IPROPOSED I �.. -r • -..r. - . SWALE/CHANNEL CENTERLINE PROPOSED TOP OF BERM CENTERLINE w I I uJ Lu Its w i w CO� uJ UJ Its w LENCG LENGTHSF E 5 STRUCTURE & F.E.S. SURFACING LEGEND z z I U Li I 1 1 L ---J U r.. L J ROAD — 12" THICKNESS 1AcGRE ATE BASE) RECESS AREA - 8" THIG1tNESS [1.5" MINUS GRAVEL] TOPSclL/FJE-VEGETATION - 3- DEPTH (ASSUMED) RIPRAP EROSION PROTECTION - 22.5' DEPTH (ASSUMED) 5045 WELD COUNTY ROAD S5 PROFILE n747 I?T- BURIED RIPRAP PROTECTION - 24' DEPTH (ASSUMED) 5045 5040 HS'. STP;',12+02.35 H.E.-ELE 5QZtZ7 5040 P' 1 STA, 12+00.00 PIN ELEV`. 5029.44 r: 47.05: Lli/Q 80.00 4 w 4 IN il O�^,j'�a.035 50j}35 '}r An SI —LP. d r STk 1+55.77 g s $ a L.P. ELEV:� £021.92 FM STAt 21+50.00 PM ELEU 5021.&1 3 5030 I ,V>r: s:M Oa._ 5030 _ MOP _GROUND...CT j -- ________________ ROAD OENIERLJhE n 5025 � _ W _ d 5025 1L1Lzo.l�asr "-__t — -..;� -..1-_ EX5TG41YIIA3 AT 4¢ CDVXMLAC '—�——`---- -o--�— ---- ----------- � � P15TEFJTIPL 18" RCP �5+7r� 5020 (ASJJMED SIZE) ALDIfldNAL &JRVEY NEEDED FOR AREA FOR FINAL DESIGN TO DETERMNE CULVERT LOCATION & NEED 5015 evt �n ;:ii o [v• ,'j[ v �yyyj$$$ m w o c�I oMR u 4 26' &6' 100' ELM Ill MT II ratUDI N r MTV t tt N $I a N o CV O N O N o N a N o N fl N o N o `c i!i! � + c> RADO ,`,81, �/j Ln In ,n WI in u) u� Ln In to u VERTICAL SCALE: 1"=5 8 I `L.`'f ( •6•' •- 12+00 13+00 14+00 15+00 16+00 17+00 18+00 19+00 20+00 21+00 22+00 F tLIMINAR f �'': A AT 1}18 ESS NOT FOR CONSTRUCTION Dlp.� a THIS DRAWING HAS NOT BEEN PUBLISHED BUT RATHER HAS BEEN PREPARED BY ZAP ENGINEERING & CONSTRUCTION SEFMCES, INC. FOR USE BY THE CUENT NAMED IN THE TITLE BLOCK SOLELY IN RESPEC.1 OF THE FACT CONSTRUCTION, IN THE TITLE NB 0CKMAIANDI H OF THE FACILfIY NAMED IN THE BLCCI4 AND SHALL NOT OE USED FOR ANY OTHER PURPOSE OR FURNISHED TO ANY OTHER PARTY WITHOUT THE EXPRL_ CONSENT OF ZAP ENGINEERING & CONSTRUCTION SERVICES, INC. REFERENCED DRAWINGS DRAWING REVISIONS '"., ILMCDRERMMICIIILCO*tlIMACTIatlunwrnes.wc MAK ENA GAS PLANT WCR 85 PLAN 8e PROFILE DRAWING NUMBER TITLE REV DESCRIPTION BY CHK APVD DATE A ISSUED FOR CONCEPT GRADING REVIEW Why JME 44/30/18 : O0 a- �r- 303-997-6113 Awarkinillsoiwo OUTRIGGER ENERGY ar.! B ISSUED FOR CONCEPT GRADING REVIEW WM JME 05/09/18 C ISSUED FOR CONCEPT GRADING REVIEW Why JME 4518/18 JOB NO: 18044 D ISSUED FOR CONCEPT GRADING REVIEW WM JME 05/24/1B DRAWING NO: 18044-0O3-1011 REV: PLOT SIZE: ANSI D SCALE:AS SHOWN KEY MAP HIGHWAY 14 I I II I , I I (I d 'I 'I - I .4. 1511, I ._.11 .i..-M c 1 I -I ID Isa USR BOUNDARY RQAQ 85 1i 4i CAUTION - POTENTIAL FOR EXISTING EOJRIED PIPELINES ; 4 (TMp) EXISTS 1Vi+ UNKNCh1N DEPTHS FIELD VERIFY LOCATICt1 - - - _ — DEPTH MICR k— 1D CONSTRUCTION 'I ,� I BURIED PIPELINES EXISTING I5 'II{ UNKNO?R1 CfPT S } 56 LF0Tg RCP AT 083X1 (�� RAM _ —�� d - r (ASSUMED SIZE/SLOPE) A�fid 4 ¢ FIELD VERIFY LOT;ATICN DEPTH PPM j-ri I I� .ti'; 1 -I -I M ,fir "N CONSTRUCTION j �. �A3 n .. /_ _ . �� - "� 7+--+�i�1�-er !2-l� �l-�1l�f—i h- -ii-'}-0—f—r — Sri- ef—f--E—{�f - - - - - - — 7 ll--{f—` f-1 l-11-1,--(7-11-0-01-0—f,—el--1 iL �J—f rA h�'�rA—!f ./ . .� • - - - - - ^-• _ _ . �5a2z= ' —� — —S•- - - — — - — — — — — — — — — = SO22a- -_ - -- #; 5023 ~sow— f WELD COUNTY RdAL7 85 �� ~� GRADING LEGEND -. _ ssf°° as[au °o :Sine .I • �r 3' 31+ea-- _ I 32+ DO f 35r2S ---5022�•�_ — ----------- 5 —"5D2' .. — --- - — --- ,� s -Y� i X22--- "`�• �� -- + _ ' — — — — — I / '1~ rt } —'I — — 4801 FINISH GROUND INT. CONTOUR [1' INTERVAL] r• (£1 7RA4E2E9 iAOING NifY LIMITS (-rep) I ) d / f' J_ - ° l f -f - —r, Nr — % 0 ?o �'- — -• I 4 � yti . A ti mss- J err o _._ by �I 'V Cr el Y �j r I lr I Y7RAt�lE0 - Th,, 4600 C: r �� N FINISH GROUND INDEX CONTOUR [5' INTERVAL] PROP. SLOPE ARROW (7r HORIZONTAL TO VERTICAL) `l r I +✓1 I %—fm- �• S 1\ t I LIL. h-11/_ . Ih r .,� s �' X --- ' l J x ( �l'i-ifiitf I • `'� '', N. +FG=4866.28 FLOW DIRECTION ARROW FINISHED GROUND SPOT EL. :r-.rte, -dt'�1---11-1A--ff--l1-11--Il-fP--II--11-11-,' -Il- 11 -70--41'11—'1--11-11—ti 0-1,+--4,--r--,+l�-I+} l-- 1 ref `.J 1%i F4 9 .+=1:r -1.+-/=-f i- .L" 1=�i}-f�- l�ff-i1=I��---^�'.�:' —�� = -- / - ` `- k / �� 1 f / ' 5 i / I r / (r1 O&J P.FELArrE f�J 51 P7aSM RRyt INECPC RECEP WV Na -WPM, _ � III \ I +C 4BBB.26 \ ----- \ t 4 E14368.20 �k \ % , F 38 ,at GRADE BREAK SPOT EL FLOWLINE SPOT EL. EXISTING GRADE J{ Ls.' f j/ +'� k t —•• -- • —• •—.• — • II ~� \\ I. — PROPOSED SWALE/CHANNEL CENTERLINE PROPOSED TOP OF BERM CENTERLINE ++ = f i i £''' _ ----_ ti I '", \ l PROP. CUL1tERT OUTLET STRUCTURE & F.E.S. ,-' ) f LJ LIJ vs w .r LENGTHS INCLUDE F.E.S. SURFACING LEGEND z J 1 1 L I_ --J L_ _ • J 4, L J ROAD - 12" THICKNESS 1AcGREG4TE BASE] 6" THIG#{NESS [1.5. MINUS GRAVEL] TOPSOIL/RE—VEGETATION — 3- DEPTH (ASSUMED) rbrill RIPRAP EROSION PROTECTION - 22.5' DEPTH (ASSUMED) WELD COUNTY ROAD as PROFILE BURIED RIPRAP PROTECTION - 24' DEPTH (ASSUMED) 5045 5045 5040 5040 H N.P. STA: 28+26 R REV: 5225.15 5035 FM -5TA;-28+25.DD 5035 PM ELEV: 5025.22 K: 50.00 sawn, „VL: o a. 0 Q. a inb 5030 N in n 5030 a d III PROP ROAD GRVJND AT CENTERLINE- ELEV` 5023.311 �� CL_CL 517E ACCESS ROAD w� mti 5025 ` 5025 , - - -D:r —� 0.50% STORM X-ING (1'3 RCP ASSUMED) TA: 27+ 00 — x ` — Irs T.DIP, ELEV09 502343 ter— --rs•'� -- 5020 5020 E4757r AT 7 0.4.0 GAME vt w Z-'emE14--eS 5015 5015 Ul u� +Io n O) * +r � n o * elMR m Ir+o 0) en,c} 26 I €r� k 100 1 EMU ill LITT II RMILVDI N N ri N w Pi N N N Fa .g N N Lr3 sY N N RI N N Mi N a MIN NOTIVA11ON CF]'1TER E O N n o $ t] CO n a N o N (f Gr:OCFV,dD u-, to un ,��, to Isr in In in In VERTIC:AL SCALE: 1"=5 81 1 ra=. I.'.- 23+00 24+00 25+00 26+00 27+00 28+00 29+00 30+00 31+00 32+00 P'RELIMINAR'Y ': ArtEa�I }a res -°� .� � NOT FOR CONSTRUCTION • THIS DRAWING HAS NOT BEEN PUBLISHED BUT RATHER HAS BEEN PREPARED BY ZAP ENCINEERING & CONSTRUCTION SEFMCES, INC. FOR USE BY THE CUNT NAMED IN THE TILE BLOCK SOLELY IN RESPECT OFB THE CONSTRUCTION, OPERATION AND MAINTENANCE OF THE FACILfIY NAMED IN THE TfILE BLOCK AND SHALL- NOT OE USED FOR ANY OTHER PURPOSE OR FURNISHED TO ANY OTHER PARTY WITHOUT THE EXPRL CONSENT OF ZAP ENGINEERING & CONSTRUCTION SERVICES, INC. REFERENCED DRAWINGS DRAWING REVISIONS °' MAKENA GAS PLANT WCR 85 PLAN 8e PROFILE DRAWING NUMBER TITLE REV DESCRIPTION BY CHK RAND DATE A ISSUED FOR CONCEPT GRADING REVIEW LJM JME 04/30/16 : 30.3-997-6II3 erewarkmill.saaro Ill U TRIGGER ENERGY ISSUED FOR CONCEPT GRADING REVIE'A' LJM JME 05/09/18 U4O wwtfl &COMOtrucrlON ILEKOCEB-..iaC C ISSUED FOR CONCEPT GRADING REVIE41' Whl JME 05/18/15�`� JAB NO: 15044 D ISSUED FOR CONCEPT GRADING REVIEW LJM LIME 05/24/18 DRAWING NO: 18044-003-1012 REV. PLOT SIZE:ANSI D SCALE:AS SHOWN Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Site Description Attachment 5 Koki Compressor Station Spirit Environmental, LLC 18350.00A June 2018 8-10 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Site Description 1.0 Site Description 1.1 Nature of Construction and Site Description The operator is constructing a compressor station and associated structures southwest of Keota and east of Briggsdale in Weld County, Colorado ("Site"). The Koki Compressor Station will consist of various compressors, skidded process equipment, vessels, tanks, combustors, pipe racks and supports, and miscellaneous utility buildings. The areas surrounding the facility components will consist of gravel -surfaced yard areas and driveways. The Site is located on County Road 95 south of its intersection with West Highway 14 and north of its intersection with County Road 88. A site map of the project is included at the end of this Attachment. The entire site, which includes areas where construction support activities occur, is approximately 80 acres which are included u nder the scope of this SWMP. The main area of excavation and soil disturbance will occur on 28 acres in the north central portion of the parcel. Areas outside of the project boundary are not included under the scope of this SWMP and are also not under the operational control of the operator. The operator has prepared a site map that is included at the end of this Attachment, which will be updated by the operator during construction activities. The site is an undeveloped field and is bounded on the north, south, and west by similar u ndeveloped fields, and on the east by a dirt road. The site is gently sloping down from north to south with maximum elevation difference across the entire site of about 35 feet. However, the elevation difference within the proposed gas plant footprint is about 10 feet or less. Per the Kumar & Associates, Inc. Geotechnical Engineering study "Subsurface conditions e ncountered in the exploratory borings generally consisted of a few inches of soil containing rooted matter underlain by bedrock in six of the borings or by native predominantly clayey overburden soilsextending to bedrock at depths ranging from about 1.5 to 4 feet in the remaining borings. An approximate 1.5 -foot -thick zone of native granular soils was encountered above the bedrock in Boring 2. The native overburden soils were predominately clay soils consisting of slightly moist to moist, light brown to brown, lean clay to lean clay with sand. The native clay soils contained a fine to Spirit Environmental, LLC 18350.00A June 2018 8-11 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Site Description coarse grained sand fraction. The 1.5 -foot -thick layer of native granular soils encountered in Boring 2 consisted of fine to coarse grained, slightly moist, brown, clayey sand. Based on sampler penetration resistance, the clay overburden soils ranged from very stiff to hard with isolated cemented areas, and the granular overburden soils were medium dense." Existing vegetation at the site primarily consists of sparse native grass and shrubs. Preconstruction the site has 100% vegetative cover. During construction stormwater runoff will flow south to the detention basin and will be discharged from an outfall at the west end of the pond. From the outfall stormwater runoff will continue west to the Crow Creek. Allowable non-stormwater discharges from this site will be consistent with the list provided in Section 2.4. 1.2 Potential Pollutants and Locations Potential pollutants from construction activities and equipment utilized at the Site may be encountered. Sediment is a potential pollutant from these construction activities and erosion and sediment controls will be installed and maintained to reduce the potential of sediment in runoff from construction activities. Equipment stored onsite will be inspected for signs ofspills and leaks. Building materials and/or chemicals (such as paint, stucco, concrete products, etc.) will be stored in dosed containers and/or undercover to reduce the potential for comingling with stormwater runoff. Concrete washout from paving operations will be contained as described in Section 4.7. Solid waste, such as general non -hazardous trash and scrap from building materials, will be stored in an onsite waste disposal bin. Additional potential pollutants that may be encountered during construction activities are listed in Table 1-1. Spirit Environmental, LLC 18350.00A June 2018 8-12 Outrigger DJ Operating LLC Construction General Permit Storm Water Management Plan Site Description Table 1-1 List of Potential Pollutants Potential Pollutants Source Sediment Construction and construction activities support Oil and grease Construction equipment onsite Total Petroleum hydrocarbons Fuel in aboveground storage construction vehicles tanks and Metals Buildings materials and equipment TSS, Paint, (such stucco, concrete, as metal piping) and/or building materials Construction tanks, and of buildings, foundations, process vessels General non -hazardous trash Construction activities and construction support 1.3 Construction Schedule Construction of the Kaki Compressor Station will commence in October 2018 with final stabilization and operations anticipated to start in March 2019. Construction will generally progress as follows, with simultaneous phases of construction underway at different stages: • Installation and subsequent maintenance of erosion and sediment controls and BMPs; • Grading of the lots; • Installation of piping and ancillary utilities; • Installation of a concrete foundation; • Vertical construction of the individual sites; • Construction of detention ponds and piping to the drainage ditch; • Completion of siding and insulation installation and painting of the exterior and the connection of utilities; • Installation of sidewalks and/or drainage facilities; • Installation of sod and stabilization practices, such as seeding; and • Removal of erosion and sediment controls and BMPs. Spirit Environmental, LLC 18350.00A June 2018 8-13 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Site Description 1.4 Site Specific BMPs The Koki Compressor Station will utilize hay swaddles, gravel at vehicle access points, and a stormwater detention pond. These BMPs are shown on the site map and described in further detail in Section 4.0. 1.5 Materials Handling and Spill Prevention BMPs will be implemented to minimize impacts from construction procedures and significant materials handled at the construction site. Primarily the Koki Compressor Station will rely on good housekeeping practices and facility inspections to prevent and detect spills, leaks, or an unauthorized discharge. Should a release be detected at the site it will be immediately reported to the SWMP Administrator who will implement the appropriate response procedures. 1.6 Site Stabilization Areas without pavement or building at the Koki Compressor Station is be stabilized with gravel following construction. A detention pond will be built during construction and will then be maintained as a permanent stormwater control at the facility. Spirit Environmental, LLC 18350.OOA June 2018 8-14 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Site Description Attachment 6 White Rock Crude Terminal Spirit Environmental, LLC 18350.00A June 2018 8-15 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Site Description 1.0 Site Description 1.1 Nature of Construction and Site Description The operator is constructing a crude terminal and associated structures southeast of Keota and west of Raymer in Weld County, Colorado ("site"). The White Rock Crude Terminal will consist of internal floating roof ("IFR") tanks, skidded metering and pumping skids, and miscellaneous u tility buildings. The areas surrounding the facility components will consist of gravel -surfaced yard areas and driveways. The Site is located on west County Road 86, west of West Highway 14 and east of County Road 115. A site map of the project is included at the end of this Attachment. The e ntire site, which includes areas where construction support activities occur, is approximately 80 acres which are included under the scope of this SWMP. The main area of excavation and soil disturbance will occur on 28 acres in the north central portion of the parcel. Areas outside of the project boundary are not included under the scope of this SWMP and are also not under the operational control of the operator. The operator has prepared a site map that is included at the end of this Attachment, which will be updated by the operator during construction activities. The site is an undeveloped field and is bounded on the north, south, and west by similar u ndeveloped fields, and on the east by a dirt road. The site is gently sloping down from north to south with maximum elevation difference across the entire site of about 35 feet. However, the elevation difference within the proposed gas plant footprint is about 10 feet or less. Per the Kumar & Associates, Inc. Geotechnical Engineering study "subsurface conditions encountered in the exploratory borings generally consisted of a few inches of soil containing rooted matter underlain by bedrock in six of the borings or by native predominantly clayey overburden soils extending to bedrock at depths ranging from about 1.5 to 4 feet in the remaining borings. An approximate 1.5 -foot -thick zone of native granular soils was encountered above the bedrock in Boring 2. The native overburden soils were predominately clay soils consisting of slightly moist to moist, light brown to brown, lean clay to lean clay with sand. The native clay soils contained a fine to coarse grained sand fraction. The 1.5 -foot -thick layer of native granular soils encountered in Boring 2 consisted of fine to coarse grained, slightly moist, brown, clayey sand. Based on sampler Spirit Environmental, LLC 18350.00A June 2018 8-16 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Site Description penetration resistance, the clay overburden soils ranged from very stiff to hard with isolated cemented areas, and the granular overburden soils were medium dense." Existing vegetation at the site primarily consists of sparse native grass and shrubs. Preconstruction n stru cti o n the site has 100% vegetative cover. During construction stormwater runoff will flow south to the detention basin and will be discharged from an outfall at the west end of the pond. From the outfall stormwater runoff will continue west to the Crow Creek. Allowable non-stormwater discharges from this site will be consistent with the list provided in Section 2.4. 1.2 Potential Pollutants and Locations Potential pollutants from construction activities and equipment utilized at the site may be encountered. Sediment is a potential pollutant from these construction activities and erosion and sediment controls will be installed and maintained to reduce the potential of sediment in runoff from construction activities. Equipment stored onsite will be inspected for signs of spills and leaks. Building materials and/or chemicals (such as paint, stucco, concrete products, etc.) will be stored in closed containers and/or undercover to reduce the potential for comingling with stormwater runoff. Concrete washout from paving operations will be contained as described in Section 4.7. Solid waste, such as general non -hazardous trash and scrap from building materials, will be stored in an onsite waste disposal bin. Additional potential pollutants that may be encountered during construction activities are listed in Table 1-1. Spirit Environmental, LLC 18350.00A June 2018 8-17 Outrigger DJ Operating LLC Construction General Permit Storm Water Management Plan Site Description Table 1-1 List of Potential Pollutants Potential Pollutants Source Sediment Construction and construction activities support Oil and grease Construction equipment onsite Total Petroleum hydrocarbons Fuel in aboveground storage construction vehicles tanks and Metals Buildings materials and equipment TSS, Paint, (such stucco, concrete, as metal piping) and/or building materials Construction tanks, and of buildings, foundations, process vessels General non -hazardous trash Construction activities and construction support 1.3 Construction Schedule Construction of the White Rock Crude Terminal will commence in October 2018 with final stabilization and operations anticipated to start in March 2019. Construction will generally progress as follows, with simultaneous phases of construction underway at different stages: • Installation and subsequent maintenance of erosion and sediment controls and BMPs; • Grading of the lots; • Installation of piping and ancillary utilities; • Installation of a concrete foundation; • Vertical construction of the individual sites; • Construction of detention ponds and piping to the drainage ditch; • Completion of siding and insulation installation and painting of the exterior and the connection of utilities; • Installation of sidewalks and/or drainage facilities; • Installation of sod and stabilization practices, such as seeding; and • Removal of erosion and sediment controls and BMPs. Spirit Environmental, LLC 18350.00A June 2018 8-18 Construction General Permit Storm Water Management Plan Outrigger DJ Operating LLC Site Description 1.4 Site Specific BMPs The White Rock Crude Terminal will utilize hay swaddles, gravel at vehicle access points, and a stormwater detention pond. These BMPs are shown on the site map and described in further detail in Section 4.0. 1.5 Materials Handling and Spill Prevention BMPs will be implemented to minimize impacts from construction procedures and significant materials handled at the construction site. Primarily the White Rock Crude Terminal will rely on good housekeeping practices and facility inspections to prevent and detect spills, leaks, or an unauthorized discharge. Should a release be detected at the site it will be immediately reported to the SWMP Administrator who will implement the appropriate response procedures. 1.6 Site Stabilization Areas without pavement or building at the White Rock Crude Terminal is be stabilized with gravel following construction. A detention pond will be built during construction and will then be maintained as a permanent stormwater control at the facility. Spirit Environmental, LLC 18350.OOA June 2018 8-19 Hello