| Planning | Form: (02A )
402630121
6/22/2022 | To the extent possible, LED fixtures are used to reduce skyglow. This is based on the calculated results of the relative impact versus traditional lighting methods using DOE Skyglow comparison tool PNNL-SA-138348. (Pre-Production and Production Phase). All lights have been positioned to point in a downward direction where vertical lighting is not required. Where it is required, lights are angled in a vertical direction to provide task lighting for safety and operations involving personnel. (Pre-Production and Production Phase). Luminaire Type “A” used on the Derrick mast are facing horizontally to provide adequate lighting for safe operations. (Pre-Production Phase). Luminaire Lights Type “G” and “E” are used exclusively for task lighting when required for maintenance operations at night for safety reasons. Otherwise, these lights are to remain off.
To the extent possible, design considerations have been made regarding the type of light fixtures used, quantity, and positioning to reduce various forms of lighting pollution. Examples include:
• Lighting is angled away from surrounding off site buildings.
• Lighting within the Production area has been reduced to provide a minimum acceptable value for safe operations.
• Light masts are automatically switched off/on based on lighting sensors.
• Lights are switched off when not required.
• Lights are directed to task areas only.
• Low power (63W) LED lights are used for the drill rig.
• Sound barriers are positioned to reduce lighting trespass to surrounding off-site buildings.
• The calculated cumulative light impacts, as indicated in Section 4.1, on surrounding buildings within a one-mile radius area are below 4 lux when measured 5.5 feet above grade.
|
| Traffic control | Form: (02A )
402630121
6/22/2022 | For the purpose of the Drake 4N64W17 1-24, PDC will utilize a freshwater pipeline for completions, and an oil pipeline to transport the hydrocarbons off-site. All pipelines combined will significantly reduce the traffic to and from this oil and gas location |
| General Housekeeping | Form: (02A )
402630121
6/22/2022 | PDC will implement a site-specific Stormwater Management Plan (SWMP) to protect Waters of the State that could receive stormwater runoff from the Location.
It is PDC’s intent to keep chemical staging, refueling, and storage more than 500 feet from the OHWM of the irrigation ditches near the WPS. Specifically, as proposed, chemical storage for the Drake Location would be located in the northwest portion of the well pad, which would be more than 500 feet from the OHWM of the ditch to the south the pad.
PDC will manage potential pollutants located onsite by sealing, wrapping, covering, or having containment/protection while not actively being used in order to eliminate/minimize contact with stormwater runoff, and prevent discharges of chemicals or other materials from the site.
PDC will practice proper storage, safe-handling, good housekeeping and spill prevention practices and procedures to prevent pollutants or contaminants from leaving the site.
PDC’s tankless operations will eliminate the potential for spills of hydrocarbons to nearby water resources at the Drake Location.
Energy dissipaters such as coconut blankets, straw mulch, or straw waddles will be installed during construction and will be left in place and maintained for the life of the project or until disturbed slopes have been revegetated and stabilized. Locations for these BMPs will be dictated by the Site Specific SWMPs for the Drake Pad.
Upon surface owner authorization and per COGCC Rules 615 and 318A.e(4), PDC will collect baseline water quality samples from an appropriate set of water wells within the vicinity of the oil and gas location. Baseline samples will be collected prior to drilling (setting of conductor casing) operations for the initial site well.
PDC will use SCADA to allow for rapid well shutdown in the event of a potential release.
Good housekeeping practices include but are not limited to employee and contactor training, designating material storage/staging areas, having standard policies and procedures regarding materials handling and waste management, implementing spill prevention procedures, developing spill response and cleanup procedures, and having equipment and vehicle fueling and maintenance policies and procedures. Good housekeeping practices will be employed at the Drake pad for the duration of the project.
PDC does and will continue to properly maintain its vehicles and equipment through its Directive Inspection/Preventative Maintenance Program. PDC completes AVO inspections of its Separators, Tanks Systems, and Vapor Control Systems. To accomplish this, PDC completes a preventative maintenance and inspection schedule annually, semi-annually, and quarterly at all facilities which includes below ground flare lines, tanks, separators, ECDs, and vapor lines. PDC’s stringent vehicle maintenance program which requires required maintenance (oil changes, tire maintenance, cleaning, and monthly truck inspections), and following all operating instructions, safety standards, and guidelines. |
| Wildlife | Form: (02A )
402630121
6/22/2022 | Informing and educating employees and contractors on wildlife conservation practices, which includes no harassment or feeding of wildlife.
• Consolidating and centralizing fluid collection and distribution facilities to minimize impact to wildlife.
• Adequately sizing infrastructure and facilities to accommodate both current and future gas production, which reduces potential for future expansion of the Locations.
• Implementing fugitive dust control measures.
• Adherence to the Project Avian Protection Plan.
• Installing screening or other devices on the stacks and on other openings of heater treaters or fired vessels to prevent entry by migratory birds.
• Minimizing rig mobilization and demobilization by completing or re-completing all wells from a given well pad before moving rigs to the next location.
• Mowing or brush hogging vegetation where appropriate, leaving root structure intact, instead of scraping the surface, where allowed by the surface owner.
• Limiting access to oil and gas access roads as approved by surface owners, surface managing agencies, or local government.
• Posting speed limits and caution signs to the extent allowed by surface owners, Federal and state regulations, local government, and land use policies.
• Using topographic features and vegetative screening to create seclusion areas, where acceptable to the surface owner.
• Using remote monitoring of well production to the extent practicable, which reduces vehicle trips to/from and human presence on the Locations.
• Reducing traffic associated with transporting drilling water and produced liquids by using pipelines.
• Installing automated emergency response systems (e.g., high tank alarms, emergency shutdown systems). |
| Storm Water/Erosion Control | Form: (02A )
402630121
6/22/2022 | Compaction alleviation – compacted soils and areas of the location impacted by construction will be ripped to a minimum depth of 18 inches prior to topsoil replacement. Decompaction will be performed by a parabolic Ag style ripper capable of fracturing the soil ensuring soil layers are not mixed. Proper decompaction will allow for greater water infiltration and promote vegetation growth. Compaction alleviation will be utilized at the Drake pad on all areas that will be reclaimed during interim reclamation.
Culvert will be utilized at the Drake pad along the perimeter ditch under the access road at the entrance to the pad. Culvert protection will be utilized at the Drake pad at the entrance to the site.
Berms will be utilized at the Drake pad in conjunction with ditches as perimeter control around the disturbance.
It is anticipated that erosion control blankets will be used at the Drake pad’s western and northern cut slopes.
PDC will fence reclaimed areas until 80% vegetation coverage (compared to pre-disturbance) has been achieved in order to ensure interim reclamation vegetation growth is not overgrazed. Fence types are to be determined by PDC and the landowner to adequately prevent livestock from entering reclaimed areas. Fencing to be installed after seed/mulch application.
Grading practices will be employed during construction of the Drake pad.
Mulching will be utilized in conjunction with seeding at the Drake pad during interim reclamation on all reclaimed areas.
Any subsoil used during interim reclamation is applied first, followed by top soil, in order to ensure that topsoil is not contaminated or adulterated and to ensure optimum germination efforts (employed at the Drake pad during interim reclamation on all areas to be reclaimed).
Packing of soil layers, recontouring will be (employed at the Drake pad during initial construction and interim reclamation on all areas of disturbance.
PDC, and/or third-party contractors, conduct a number of routine and regularly scheduled inspections, including but not limited to, stormwater inspections, SPCC (spill prevention, control, and countermeasure) inspections, LDAR (leak detection and repair) and OGI (optical gas imaging) inspections, and AVO (audio, visual, olfactory) inspections, which help to ensure the facility, construction, and all associated equipment are in good working order, regularly maintained, and free of issue, which greatly decreases the probability of a negative stormwater event or discharge from the site.
Sediment traps will be utilized at multiple points along the north, south, east, and west perimeter, and downgradient corners of the Drake pad.
Seed application at the Drake location will be performed using a disc seed drill equipped with depth bands, capable of direct seed placement no deeper than ¼ to ¾ inches, and functioning packer wheels with row spacing not exceeding 8 inches to adequately cover and stabilize the seed. All areas being reclaimed during interim reclamation will be seeded at the Drake pad.
The seed mix selected for the Drake interim reclamation is 20% Dahurian wildrye, 20% wildrye Amazon, 15% smooth brome, 15% pubescent wheatgrass, 15% intermediate wheatgrass and 15% orchard grass. PDC estimates application rate should be 40 pounds per acre.
Street sweeping will be utilized as/if needed on any adjacent paved roads throughout the duration of construction at the Drake pad.
Stockpile management practices will be employed at the Drake pad with regard to the stockpiled topsoil located along the north perimeter and in the southeast corner of the disturbance. Commonly accepted BMPs for stockpile construction call for a maximum height of ten feet and topsoil stockpile slope no greater than 3:1. PDC plans to follow these specifications with regards to the topsoil stockpile at the subject location.
Surface armor will be utilized on the working pad surface at the Drake pad.
Surface roughening will be employed as a temporary stabilization method on the topsoil piles at the Drake pad, located along the north perimeter and southeast corner of the disturbance.
The Drake 4N64W17 1-24 Pad location’s access road leads to an unpaved/dirt county road (CR-29). If and where deemed necessary, vehicle tracking control may be implemented at the access to the pad. This can include a temporary stabilized entrance to the construction location that helps minimize off-site tracking of sediment onto public roads. Cattle guards, track pads, track mats, or other tracking control options, help remove sediment from vehicles by providing a stabilized area where sediment can be collected, tracked, shaken, and/or washed off before leaving the location.
PDC will install outlet protection on discharge points on locations in accordance with Operator's Storm Water Management Plan and CDPHE approved Best Management Practices (BMP) Manual.
PDC will address Stormwater deficiencies identified in a timely and efficient manner. All work conducted to address deficiencies will be documented. If it is not feasible to address deficiencies in a timely manner. A record of deficiencies, work needed and reason for delay will be documented by the Operator. A tentative work plan will be kept scheduling deficiency repair or installation once conditions allow. |
| Material Handling and Spill Prevention | Form: (02A )
402630121
6/22/2022 | Volume Estimation: All waste volumes generated during well development, production or abandonment activities will be estimated as part of the planning process to ensure volumes, duration, frequency of transportation, and disposal needs are considered before beginning an operation phase.
Characterization for disposal profile: All waste generated during well development, production or abandonment activities will be characterized, profiled, and disposed of at the appropriate facility. Generator knowledge will be used to correctly profile the waste with the appropriate disposal facility.
Onsite Treatment: Where feasible and appropriate waste will be treated onsite before being profiled and sent to the appropriate disposal facility. Onsite treatments may include, but not limited to mechanical and chemical material separation, solidification, sediment capture, sample collection, material storage and remediation. Generator knowledge will be used to correctly treat the waste onsite before being sent to the appropriate disposal facility.
Onsite Management and Storage: All waste material from drilling, completions, production, and abandonment activities maybe stored on site prior to disposal. While on site all waste will be stored in appropriate bins, tanks, vessels or other compatible containers or engineered containment devices. All storage containers will be properly labeled and will be regularly inspected to ensure they are in good condition and free of excessive wear, structural issues, or other defects that may impact their effectiveness. Waste volume levels will be closely monitored to ensure timely disposal schedules and prevent overloading of containment structures.
Transportation: All waste material from drilling, completions, production, and abandonment activities will be transported for disposal by licensed haulers with proper manifests, shipping papers, labels and placards, and waste determination or profiles approved by the disposal facility. PDC requires all transporters participate in an annual safety training provided by PDC. In addition, transporters are required to participate in and have a good rating in the ISNetworld contractor management program along with a drug testing program.
Disposal: All waste material generated from drilling, completions, production, and abandonment activities will properly characterized, profiled, and transported to a licensed disposal facility.
Haul Routes: PDC will use appropriate haul routes for all waste transport as coordinated and identified within the approved 1041 WOGLA for this location and communicated via the Road Maintenance Agreement with Weld County.
Stormwater Runoff and Sediment Controls: Appropriately designed BMPs will be installed and maintained to prevent sediment runoff and vehicle tracking. PDC will conduct monthly and postprecipitation stormwater site inspections in accordance with stormwater management program.
Dust Control: Dust control methods will be in place to ensure dust is kept to a minimum |
| Material Handling and Spill Prevention | Form: (02A )
402630121
6/22/2022 | PDC will conduct daily AVO inspections throughout the active life of the Drake location (pre-production and production).
PDC will conduct routine inspections of all production and pre-production equipment (tanks, separators, combustors, engines, drill mod storage), on-site wellhead(s), temporary equipment (when required), and onsite above-ground flowlines.
As part of PDC’s established LDAR, STEM, OOOOa inspection and compliance programs, PDC will adhere to the use of AIMM inspection procedures with all production equipment and facilities.
All oil-handling personnel participate in a formal SPCC training session as new hires prior to oil handling responsibilities and thereafter on an annual basis. Additional training is provided as needed. Employee training will be documented on the Employee Training Record and records will be maintained for a period of three years. SPCC training will be conducted by internal PDC staff or by a qualified 3rd party contractor.
Flowlines will be integrity-tested per the 1100 Series rules.
PDC spill response procedures will be adhered to for any spills or releases. All spills will be managed in accordance with the COGCC 900 Series rules
PDC does not currently and will not utilize PFAS in any future operation. |
| Dust control | Form: (02A )
402630121
6/22/2022 | During all phases of operations (from construction to interim reclamation), a 10 mph speed restriction will be implemented (unless dust is not visible, then the speed restriction will increase to 20 mph). During all other operational phases, on location speed is limited to 10 mph. Regular lease road maintenance to consist of, grading and recompacting the road surface with the optimum amount of water applied when the road surface becomes deteriorated or monthly when heavy traffic is present. Restriction of construction activity during high-wind days; on days when dust becomes fugitive (visibly leaves or threatens to leave the site) construction or activities will be halted until either fresh water can suppress dust or dust is no longer visible. During initial pad construction, the topsoil will be stripped from the disturbance area and stored onsite for future use during pad pull-back and interim reclamation. All stockpiled topsoil will be protected from degradation due to contamination, compaction, and, to the extent practicable, from wind and water erosion thereby minimizing potential impacts from fugitive dust. This will be achieved initially by applying cat-tracking to the topsoil pile and employing additional BMPs if and when needed (e.g., the addition of organic matter). PDC also maintains a weed mitigation maintenance schedule to prevent the weed establishment on the topsoil pile. BMPs such as coconut blankets, straw mulch, or straw waddles, sediment basins, swales and perimeter ditches will be used to prevent excess erosion of soils from disturbed areas and the potential for fugitive dust. Coordinate dust mitigation on Gravel surfaced roads with Weld County Public Works per the terms of the Road Maintenance Agreement in applying Magnesium Chloride or an alternative surfacing material prior to construction and maintaining through completion of Interim reclamation of the drill pad. PDC uses a gravity fed box proppant delivery system that meets OSHA standards, rather than the historic pneumatic trailer proppant transfer system that blows sand out of the trailer into frac sand silos on the location; a method that required supplemental dust control to meet OSHA requirements. With a gravity fed proppant delivery system, the delivery container is also a well pad storage container, eliminating the need for frac sand silos on location. Storing frac sand in containers reduces sand dust during fracing operations by dropping sand directly from the container into the blender sand hopper. As a result of the gravity fed box proppant delivery system, PDC does not anticipate any silica dust to migrate off of the Drake, George, and Hen Locations during completion operations. PDC uses Automation on all new wells and production facilities to minimize truck traffic and to reduce the number of visits to location. PDC monitors locations 24 hours a day by the FMR (field monitoring room) and that has cut down on the need for physical location checks greatly. PDC will also have camera coverage of the site that can be viewed remotely. With the current automation we can check the wells from the FMR, offices and trucks.
PDC does not and will not in the future utilize any produced fluids for the purposes of dust suppression. |
| Construction | Form: (02A )
402630121
6/22/2022 | PDC has opted to use partially buried fiberglass water vaults due to the need for the inlet to the vault being below frost line to keep from creating freezing issues during the cold weather months and prevent environmental releases. As an additional precaution the water vaults are set at 3 to 4 feet below grade keeping 3 to 4 feet of vault above grade with a geo-synthetic liner installed under the vault. The fiberglass vaults that we use are double walled and inspected as part of our integrity testing program. We install our load line at 12 to 18 inches above the bottom of the vault to keep water in the vault at all times as a precaution to keep the vault from floating. |
| Noise mitigation | Form: (02A )
402630121
6/22/2022 | Prior to commencement of any drilling and completion activities, approximately 2,120 linear feet of 32 foot tall, engineered sound wall rated at STC 32 will be installed as proposed by PDC. This will include approximately 1,060 linear feet on the north side of the location, 160 linear feet on the East Side of the location, 700 linear feet on the West side of the location and 200 linear feet on the south side of the location. Prior to commencement of completions activities, an additional 160 linear feet of 24-foottall source panels rated at STC 43 will be installed around completions equipment. The Ensign 142 drilling rig will be run on power from the electrical grid so that three standalone gensets do not need to be run on site (eliminating three significant noise sources). A Quiet Fracturing Fleet will be utilized for completions operations. An additional pre-production ambient survey will be conducted. Continuous monitoring will be employed for all drilling and completions and any operations that lasts longer than 24 continuous hours. If the drilling rig or frac fleet is changed prior to commencement of operations, the mitigation measures will be equally or more protective. A Form 4 will be submitted per Rule 404.d to outline any changes. PDC will post contact information to receive and address noise complaints arising from pre-production operations around the clock, 24-hours, 7 days per week. Upon receipt of a complaint, either directly to PDC or from the COGCC, PDC will contact relative stakeholder within 24 hours of receipt. |
| Emissions mitigation | Form: (02A )
402630121
6/22/2022 | Per PDC’s tankless approach to operation of the Kenosha Locations, there would be zero oil tanks on Location and there would only be two produced water tanks and two maintenance tanks on Location during production.. Reduction in the number of tanks will reduce air emissions.
PDC will not flare sales gas during normal operations.
PDC will use supervisory control and data acquisition (SCADA) systems to monitor well operations and pipes oil from the Location, which will reduce emissions from vehicle traffic due to the reduced number of vehicle trips to the site.
Any emissions resulting from liquids diverted to the maintenance tanks will be combusted in an emission control device with at least 95 percent design destruction efficiency.
PDC has a sophisticated Directed Inspection/Preventative Maintenance (DI/PM) program that contributes to the decrease in fugitive emissions and spills related to nonfunctioning or aging equipment.
PDC completes daily audio/visual observations at every active location which provides early detection of equipment malfunctions thereby minimizing emissions from leaks.
PDC employs tank pressure monitors on all new locations which helps to monitor and verify design and performance of the vapor control system (VCS) to make sure it is operating properly.
PDC will utilize Lease Automatic Custody Transfer (LACT) to transfer the majority of the condensate product directly into a pipeline. In the few instances when LACT or the pipeline are not available, condensate transfer into tank trucks will be controlled by vapor return and an emission control device with at least 98 percent design destruction efficiency.
Any emissions resulting from liquids diverted to the maintenance tanks, vapor recovery units, or any other form of secondary separation, will be combusted in an emission control device with at least 98 percent manufacturers design destruction efficiency.
PDC will capture produced water storage tank emissions and route them to an emission control device with at least 98 percent design destruction efficiency.
PDC will use no bleed pneumatic control valves at both the well heads and the production facilities.
Tanks and Vapor Control Systems will also be designed and constructed in accordance with Air Quality Control Commission Regulation Number 7.
PDC will implement a Leak Detection and Repair program (LDAR). The LDAR would involve monthly inspections using infrared (e.g., FLIR) cameras.
As PDC is committed to closed-loop drilling there will be no emission-producing reserve pits.
As the Kenosha facilities age, PDC will use emission-less swab technology and controlled unloads to minimize emissions during maintenance activities.
To reduce the need for flaring and minimize potential impacts, when pipelines are unavailable, PDC will shut-in the facility.
To prevent venting of the bradenhead annulus, PDC does not conduct blowdowns prior to bradenhead testing. For wells on bradenhead mitigation, an abatement system is either routed straight to a combustor or to a tank in which the associated emissions are routed to a combustor, both of which eliminate venting.
PDC will avoid performing routine or predictable gas venting emissions activities on Ozone Action Days, when practicable. Ozone Action Day advisories are published by the Colorado Department of Public Health and Environment. |
| Odor mitigation | Form: (02A )
402630121
6/22/2022 | Oil and gas operations will be in compliance with the Department of Public Health and Environment, Air Quality Control Commission, Regulation No. 2 Odor Emission, 5 C.C.R. 1001-4, Regulation No. 3 (5 C.C.R. 1001-5), and Regulation No. 7 Section XVII.B.1 (a-c) and Section XII. Fresh water mud system will be utilized for surface hole. PDC will be using Group III Oil Based Mud for drilling of the production string which readily biodegrades, is non-toxic in the water column and has low sediment toxicity. Due to the extremely low VOC and BTEX counts of the Group III system, odor neutralizer is not anticipated. Oil based drilling fluid not being used in the active mud system shall be stored in closed, upright tanks. In an effort to keep odor from oil base cuttings as low as possible, PDC continuously hauls cuttings to an approved disposal facility throughout the drilling process. PDC shall
not stockpile cuttings or store any large amount of cuttings on location. Trucks run continuously during daylight hours to keep the volume of cuttings on location at a bare minimum. Upon tripping out of the hole, the OD and ID of the drillpipe will be wiped to remove any residual mud. A catch can system mounted around the BOP to catch any mud that falls through the rotary table preventing any spillage and source of odor. Tanks will be gauged using infrared; thief hatches will not be opened for these purposes. Vapor recovery systems will be installed on storage tanks. Truck loadouts, well unloads, and swabbing will be controlled eliminating high pressure venting or flaring. Emission testing on all natural gas powered engines to ensure the emission control devices are operating properly.
In the transporting of its cuttings, PDC will does and will continue to utilize covered trucks. |
| Drilling/Completion Operations | Form: (02A )
402630121
6/22/2022 | PDC Energy, Inc. (PDC) has developed Best Management Practices (BMPS) to prevent injuries, property damage or environmental impacts and a Contingency Plan for any Modular Large Volume Tank (MLVT) leak or catastrophic failure of the tank integrity and resulting loss of fluid. These BMPs include, but not limited, by the following:
1) PDC determines MLVT locations based on size of location, nearby surface waters, site visibility, surrounding land use, property lines, onsite traffic, site security, tear-away tank fill connections, topography (high, low, slope, direction), nearby building units, roads, access points, and surface owner requests.
2) Signs shall be posted on each MLVT to indicate that the contents are fresh water and that no E&P waste fluids are allowed. Location and additional signage shall conform to Rule 210.
3) MLVTs will be operated with a minimum of 1 foot freeboard at all times.
4) Access to the tanks shall be limited to operational personnel.
5) Construction and installation of the tank structure, liner and sub-grade shall meet or exceed the manufacturer specifications. PDC follows manufacturer’s Standard Operating Procedures (SOPs) and will provide these SOPs upon request to the COGCC.
6) PDC will conduct daily, visual inspections of the exterior wall and general area for any integrity deficiencies before, during, and after filling the MLVTs. PDC uses Construction Sign-Off, Site Preparation Sign-Off, Completion Sign-Off, Pre-Fill, and Site Visit checklists to maintain a written record of inspections. However, when the fluid level in the MLVTs is less than two (2) feet and there is no activity going on (i.e. during holidays or a small break between completions), only intermittent inspections will be conducted. Two feet is the safe volume of fluid level that is needed to hold the liner down and keep the MLVT stable.
7) Each location where MLVT’s are used will have its own set of unique site-specific characteristics and associated risks (e.g., rural vs. urban setting, grade of the location, etc.) to be considered in a worst case scenario. These characteristics must be identified and addressed prior to the MLVT construction phase and should be documented in the MLVT construction checklist. Ensuring the safety of our employees, contractors, and the public are a top priority. This can be addressed with the implementation of MLVT pre-construction risk assessment measures to address safety concerns, and minimize environmental impacts and property damage in the unlikely event of a MLVT release.
8) In the event of a catastrophic MLVT failure, the Operator shall notify the COGCC as soon as practicable but not more than 24 hours after discovery, submit a Form 22-Accident Report within 10 days after discovery, conduct a “root cause analysis”, and provide same to COGCC on a Form 4-Sundry Notice within 30 days of the failure.
9) The MLVT shall be constructed and operated in accordance with a design package certified and sealed by a Licensed Professional Engineer either in Colorado or the state where the MLVT was designed or manufactured.
10) COGCC Rules 608.a.(4, 5, 6, 7, and 8), as applicable to tank setbacks at the time of installation shall apply to the siting of this MLVT.
11) All MLVT liner seams shall be welded and tested in accordance with applicable ASTM international standards. Any repairs to liners shall be made using acceptable practices and applicable standards.
12)PDC Energy Inc. hereby certifies to the Director that the Modular Large Volume Tanks, utilized for the afore mentioned location, will be designed and implemented consistent with the Colorado Oil and Gas Conservation Commission policy dated June 13, 2014.
13) PDC will place Modular Large Volume Storage Tank (MLVTs) within location perimeter controls and sediment containment structures. MLVT areas will be inspected on a regular basis to ensure perimeter integrity is intact.
MLVT Certification
PDC Energy Inc. hereby certifies to the Director that the Modular Large Volume Tanks, utilized for the afore mentioned location, will be designed and implemented consistent with the Colorado Oil and Gas Conservation Commission policy dated June 13, 2014. |
| Interim Reclamation | Form: (02A )
402630121
6/22/2022 | During initial pad construction, the topsoil will be stripped from the disturbance area and stored onsite for future use during pad pull-back and interim reclamation. All stockpiled topsoil will be protected from degradation due to contamination, compaction, and, to the extent practicable, from wind and water erosion. This will be achieved initially by applying cat-tracking to the topsoil pile, and employing additional BMPs if and when needed. PDC also maintains a weed mitigation maintenance schedule to prevent the weed establishment on the topsoil pile as needed. During pad pull-back and interim reclamation phases, topsoil piles will be respread over the non-working surface, and these areas will be reclaimed. Best management practices to prevent weed establishment and to maintain soil microbial activity shall be implemented. Commonly accepted BMPs for stockpile construction call for a maximum height of ten feet and topsoil stockpile slope no greater than 3:1. PDC plans to follow these specifications with regards to the topsoil stockpile at the subject location. |
| Noise mitigation | Form: (04 )
404439749
12/19/2025 | Based on the modeling presented in the Noise Mitigation Plan submitted with the OGDP for this site, PDC does not anticipate that the installation of the two additional compressors will result in noise levels exceeding regulatory limits at the nearest receptors. However, if elevated noise levels are observed or complaints are received from nearby RBUs, PDC will implement additional mitigation measures, which may include the installation of permanent sound walls around the compressors. |
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