| Planning | Form: (02A )
401467339
3/15/2018 | Prior to construction, Crestone Peak Resources will write a "Risk Assessment Need Determination" to identify any further mitigation measures that will be needed for this location that meet Prior to construction, will write a "Risk Assessment Need Determination" to identify any further mitigation measures that will be needed for this location that meet
Crestone Peak's Best Managment Practices.'s Best Managment Practices. |
| Traffic control | Form: (02A )
401467339
3/15/2018 | At this time, Weld County does not require traffic control plans. Crestone Peak respources will have obtained the necessary access permit for this location through the county. |
| General Housekeeping | Form: (02A )
401467339
3/15/2018 | Any material not in use that might constitute a fire hazard will be removed a minimum of twenty-five (25) feet from the wellheads.
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| General Housekeeping | Form: (02A )
401467339
3/15/2018 | Crestone Peak Resources will maintain the site so that all surface trash, debris, scrap or discarded material connected with the operations of the property will be removed from the premises or disposed of in a legal manner. |
| Storm Water/Erosion Control | Form: (02A )
401467339
3/15/2018 | Due to the proximity of a downgradient wetlands, Crestone Peak Resources will construct diversion berms or swales surrounding the entire location perimeter to prevent off site run-on as well as manage stormwater runoff from disturbed areas. CPR will construct a large capacity sediment trap between the Davis pad and the wetlands which are located approximately 214 ft west. It will be situated along the pad's downgradient perimeter and at located at the lowest point in the stormwater diversion swale network, near the north west corner. Fill slopes of both the pad and stormwater BMP control measures will be compacted and / or surface roughened to minimize unconsolidated material as well as sediment transport from these fill slopes. “
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| Material Handling and Spill Prevention | Form: (02A )
401467339
3/15/2018 | Integrity testing of flowlines connecting wellheads to the separators:
1. CONSTRUCTION PHASE: The flowlines that Crestone uses are designed/constructed/tested to ASME B31.3/4/8 and API 1104 standards. Only materials with Material Test Reports (MTRs) provided by the pipeline supplier are used in the construction of the flowlines. Construction is tested with 100% x-ray and goes through hydrotest per the applicable B31-code.
OPERATIONS PHASE: Pressure testing of the flowlines is conducted on an annual basis. Additionally, Crestone is already in compliance with 1104.i. Continuous Pressure Monitoring Requirements of the 1100 Series Flowline Regulations. Crestone utilizes a series of standard operating procedures to define our flowline integrity testing program.
2. Frequency on valve and fitting inspections: Crestone Lease Operators inspect all equipment on their locations at a minimum of once every 48 hours, but most sites are inspected every 24 hours. Valves and fittings inspections are part of the daily job duties of our lease operators. Any valve or fitting that is found to be leaking is either repaired immediately by the lease operator or shut-in procedures are implemented as described below. Additionally, lease operators conduct a documented monthly inspection of the facility and this includes inspection of all valves and fittings.
3. Description of Lease Operator Inspections, Monthly Documented Inspections & Environmental Inspections: The Crestone lease operator inspections are done as a routine part of the lease operators job. The lease operator would typically visit each of their assigned locations daily. They conduct a visual inspection of the facility which includes all valves, fittings, wellhead, tanks, vapor control systems and all connections. The lease operator also checks our Cygnet automation system for system pressures and flows. Pressure and flow sensors are placed on multiple points throughout the system and are specifically designed to measure the system for irregularities that would indicate a leak in the system or change in production of oil, water, or gas. The Cygnet system is also set-up with alarms that are triggered by anomalous pressure or flows. Low pressure warnings can activate automatic shut-in of the well and system. The monthly documented inspection is done using an electronic form that is recorded in the EU system. This thorough inspection and documentation requires the lease operator to inspect all aspects of the site and then triggers work orders for any leaks, or housekeeping issues. This inspection would note any leaks of either gas or fluids which triggers an immediate repair or shut-in. The Lease operators also conduct a weekly CDPHE Regulation 7 – Audible, Visual, and Olfactory (AVO)inspection, which focus on the tanks and vapor control system. The Regulation 7 AVO is also a documented inspection. In addition, the sites are inspected with optical gas imaging cameras on a routine schedule, annually for compliance purposes with our Spill Prevention Containment and Countermeasures (SPCC) plan, depending on the status of reclamation the sites are also inspected on either a 14-day, 30-day, annual or rain triggered event in accordance with both the COGCC and the CDPHE Stormwater Management Plans (SWMP).
4. Measures for when leaks are discovered:
If we suspect a leak we shut in the well and hydrotest the line. If it passes, then the well is brought back onto production.
If there is an actual leak, well is kept shut in while leak is found and fixed. Not until the line has passed hydrotesting, would the well be brought back online. |
| Construction | Form: (02A )
401467339
3/15/2018 | At the time of construction, all leasehold roads will be constructed to accommodate local emergency vehicle access requirements, and will be maintained in a reasonable condition.
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| Construction | Form: (02A )
401467339
3/15/2018 | This location will be constructed in such a manner that noise mitigation may be installed and removed without disturbing the site or landscaping.
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| Noise mitigation | Form: (02A )
401467339
3/15/2018 | Crestone Peak Resources will perform a baseline noise survey prior to any operational activity measuring dBA at a distance 350 feet from the noise source. If low frequency noise is a concern,we will measure dBC at 25 feet from the occupied structure towards the noise source. As necessary based on the survey, we will install temporary sound walls to minimize noise and light impacts during drilling and completions. |
| Noise mitigation | Form: (02A )
401467339
3/15/2018 | Crestone Peak Resources will construct the subject location to allow potential future noise mitigation installation without disturbance.
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| Emissions mitigation | Form: (02A )
401467339
3/15/2018 | Temporary flowback flaring and oxidizing equipment will include: adequeately sized equipment to handle 1.5 times the largest flowback volume of gas experienced in a ten mile radius. If there is overrun, Encana will shut in the well versus freely venting |
| Drilling/Completion Operations | Form: (02A )
401467339
3/15/2018 | Encana will utilize a closed-loop system for drilling operations at this location. Encana will not utilize pits.
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| Drilling/Completion Operations | Form: (02A )
401467339
3/15/2018 | The rig that will drill the wells at this location is without kelly. A double ram with blind am and pipe ram as well as an annular preventer will be used. At least one person at the well site during drilling operations will have the Mineral Management certification or Director approved training for blowout prevention.
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| Drilling/Completion Operations | Form: (02A )
401467339
3/15/2018 | Upon initial rig-up and at least once every thirty (30) days during drilling operations hereafter, pressure testing of the casing string and each component of the blowout prevention equipment including flange connections will be performed to seventy percent (70%) of working pressure or seventy percent (70%) of the internal yield of casing, whichever is less. Pressure testing will be conducted and the documented results will be retained by the operator for inspection by the Director for a period of one (1) year. Activation of the pipe rams for function testing will be conducted on a daily
basis when practicable. |
| Drilling/Completion Operations | Form: (02A )
401467339
3/15/2018 | Adequate blowout prevention equipment will be used on all well servicing operations. Backup stabbing valves will be used on well servicing operations during reverse circulation. Valves will be pressure tested before each well servicing operation using both low-pressure air and high-pressure fluid.
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| Drilling/Completion Operations | Form: (02A )
401467339
3/15/2018 | Guy line anchors in the DJ Basin are not installed. Encana will use an engineered base beam that we guy wire anchor the derricks to. |
| Drilling/Completion Operations | Form: (02A )
401467339
3/15/2018 | Prior to drilling operations, Operator will perform an anti-collision scan of existing offset wells that have the potential of being within close proximity of the proposed well. This anti-collision scan will include definitive MWD or gyro surveys of the offset wells with included error of uncertainty per survey instrument, and compared against the proposed wellpath with its respective error of uncertainty. If current surveys do not exist for the offset wells, Operator may have gyro surveys conducted to verify bottomhole location. The proposed well will only be drilled if the anti-collision scan results indicate that there is not a risk for collision, or harm to people or the environment. For the proposed well, upon conclusion of drilling operations, an asconstructed gyro survey will be submitted to COGCC with the Form 5. |