| Community Outreach and Notification | Form: (02A )
402118768
12/22/2022 | The SUA Noble has executed with each of these surface owners authorizes Noble to receive this notification on behalf of the surface owner. Noble will ensure that the surface owner(s) promptly receive notice of the Director's Recommendation. |
| Pre-Construction | Form: (02A )
402118768
12/22/2022 | Noble Energy will be obtaining a Flood Hazard Development Permit from Weld County for this location and will submit to COGCC upon approval. |
| Traffic control | Form: (02A )
402118768
12/22/2022 | Speed limits will be enforced. The traffic plan and route will include mitigation of impacts from temporary operations by applying water or magnesium chloride as dust suppression within 1000’ of occupied residences on Weld County Road 51 and on lease roads as necessary in cooperation with the county. |
| General Housekeeping | Form: (02A )
402118768
12/22/2022 | Housekeeping will consist of neat and orderly storage of materials and fluids. Wastes will be temporarily stored in sealed containers and regularly collected and disposed of at offsite, suitable facilities. If spills occur prompt cleanup is required to minimize any commingling of waste materials with stormwater runoff. Routine maintenance will be limited to fueling and lubrication of equipment. Drip pans will be used during routine fueling and maintenance to contain spills or leaks. Any waste product from maintenance will be containerized and transported offsite for disposal or recycling. There will be no major equipment overhauls conducted onsite. Equipment will be transported offsite for major overhauls. Cleanup of trash and discarded materials will be conducted at the end of each work day. Cleanup will consist of patrolling the roadway, access areas, and other work areas to pick up trash, scrap debris, other discarded materials, and any contaminated soil. These materials will be disposed of properly. |
| General Housekeeping | Form: (02A )
402118768
12/22/2022 | A trash bin will be located on site to accumulate waste by the personnel drilling the wells. Site will have
unused equipment, trash and junk removed immediately as the bin is filled
Operator will not bury or burn trash or other waste materials at an oil and gas location.
Trash receptacles will be designed, maintained, and operated to exclude wildlife, and to protect public
safety, the environment, and wildlife from exposure to overflowing, leak prone, or insecure trash
receptacles.
General trash and other non-hazardous waste will be hauled off site Waste Management, a licensed
third-party transporter. Waste is transported to one of the permitted Waste Management disposal
facilities. |
| Wildlife | Form: (02A )
402118768
12/22/2022 | Noble initiates multiple levels of Environmental Site Screening efforts for the protection of sensitive wildlife, vegetation, groundwater and surface water resources at every Wells Ranch CDP project area. Prior to construction, a comprehensive desktop survey and field-based wildlife clearance survey will be performed to determine the presence of seasonally protected raptor and migratory bird species.
• In-season, raptor nesting clearance surveys will be performed by a certified biologist no more than one-week prior to construction.
• In-season, migratory bird nesting (MBTA Compliance) will be cleared within 50-feet of the proposed disturbance 2-3 days prior to ground clearing activities.
• Although Bald and Golden Eagle are included in the raptor nesting survey-suite, eagle habitat is not delineated within the Wells Ranch CDP.
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| Storm Water/Erosion Control | Form: (02A )
402118768
12/22/2022 | BMP’s will be constructed around the perimeter of the site prior to, or at the beginning of construction. Specific BMP’s used will include stockpile stabilization, grading, sediment traps, and perimeter barriers based on final construction design and will remain in place until the pad reaches final reclamation. |
| Storm Water/Erosion Control | Form: (02A )
402118768
12/22/2022 | A sediment trap will be constructed to capture any sediment prior to leaving the location. The sediment trap
has been sized in accordance with good engineering practices. A temporary diversion, consisting of a cut
swale and compacted earthen berm, will be constructed along the pad edge and routed to the sediment
trap to prevent offsite migration of sediment/contaminant into the nearby surface water features. If
necessary, check dams will be constructed within the swale. |
| Storm Water/Erosion Control | Form: (02A )
402118768
12/22/2022 | All stockpiled soils shall be protected from degradation due to contamination, compaction and, to the extent practicable, from wind and water erosion during drilling and production operations. Seed mix, a fiber matrix, straw, as examples of control measures that could be used on Topsoil piles for protection. Topsoil stockpiles will be located along the south and west side(s) of the proposed Oil and Gas Location. The maximum height of topsoil stockpiles will be 12 feet. |
| Storm Water/Erosion Control | Form: (02A )
402118768
12/22/2022 | Structural CM practices specific to the A07-08 Facility located within the Wells Ranch proper area will include the following:
• Compost filter socks (Filtrexx or similar) sediment control logs (CFS);
• Culvert (C);
• Ditch/channel (D);
• Hydro-mulch (HM);
• Riprap (R);
• Rock socks (RS);
• Sediment basins/detention ponds (SB);
• Seeding (S);
• Soil roughening (SR);
• Trash rack (TR); and
• Vehicle tracking control (VTC).
Preferred structural CMs on the Wells Ranch estate are those that limit vegetative disturbance, including hydro-mulch, crimping, vegetative stabilization, slope drains, and berms. In order to be effective, structural CMs must be properly installed/constructed and routinely maintained. Noble’s
CM Manual provides detailed specifications regarding CM construction and maintenance. |
| Material Handling and Spill Prevention | Form: (02A )
402118768
12/22/2022 | Noble will monitor production facilities on a regular schedule to identify fluid leaks, including, but not limited to, visually inspecting all wellheads, tanks, and fittings. Annual SPCC inspections will be conducted and documented. Flowline integrity will be maintained through implementation of Rule 1104 management practices. Full site FLIR camera will be used at initial start-up and during regularly scheduled leak testing. Noble will perform maintenance if it is deemed necessary through any of the scheduled inspections. Automation technology is utilized to monitor any variations in pressures and fluid gauges which could indicate a leak at the well head or flow lines to the production facility. In addition, automation provides remote shut-in capabilities in the event of an emergency. |
| Material Handling and Spill Prevention | Form: (02A )
402118768
12/22/2022 | Impacted or Contaminated Soil will be containerized as needed either in storage bins or directly into dump trucks, depending on the volume needed. Impacted or Contaminated Soil will be transported by licensed third-party vacuum trucks
Produced water: Minimal operational storage for produced water will be place on the A07-08 Facility. Pump skid(s) and
ancillary equipment will convey produced water into the connected gathering system for conveyance to
approved disposal facilities.
Tank bottoms: Oily waste and tank bottoms will be periodically drained via vacuum truck |
| Material Handling and Spill Prevention | Form: (02A )
402118768
12/22/2022 | • Operator will use SCADA to continuously monitor line pressures, flow rates, temperature, and whether valves
are open or closed. Any fluctuations will be closely monitored and will trigger immediate action including
shutting in and scheduling repair or replacement as necessary.
All facilities onsite shall be subjected to an instrument-based leak detection and repair (LDAR) inspection at
least monthly during drilling and completion and quarterly during production.
• There will be one Maintenance Tank located on site.
• Daily site visits are made by lease operators (aka pumpers) to the facility pad for maintenance issues
including leaks and spill potential. Periodic site inspections will be conducted by 3rd party environmental
contractors to look for any signs of leaks and or potential leaks. Infrared surveys will be used to identify any
leaks coming from the flowlines on a regular basis. New flowlines will be hydrotested to manufacturer’s
recommended levels before placed into use.
• The location will utilize a SCADA (remote monitoring) system to monitor facility pressures and flows. Sensors
are placed on multiple points throughout the facility and are 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
SCADA system is designed with alarms that are triggered by irregularities and will activate automatic shut-in
of the well and facility.
Infrared surveys will be used to identify any leaks coming from the flowlines on a regular basis.
• New flowlines will be hydrotested to manufactures recommended levels before placed into use.
• Pressure testing of the flowlines is conducted on an annual basis.
• Documented Audible, Visual, and Olfactory (AVO) inspections and optical gas imaging surveys are conduced
monthly by a third-party specialist.
If a leak is discovered or suspected, the well will be shut in and the line will be hydrotested. If a leak is
determined, the well remains shut in while the leak is located and repaired. Not until the line has passed
hydrotesting, will the well be brought back online. |
| Material Handling and Spill Prevention | Form: (02A )
402118768
12/22/2022 | Noble will construct the location with 4-6” of clay and 3-5” of road-based cuttings. The well pad will be engineered with a raised earthen berm along the appropriate edges of the pad to protect the applicable surface waters from any fluid-upset condition. Structural controls within the remainder of the perimeter will ensure flow off the pad to the perimeter channel and into a detention-pond structure, further protecting downgradient surface water features. |
| Dust control | Form: (02A )
402118768
12/22/2022 | Noble shall employ practices for control of fugitive dust caused by their operations. Such practices shall include but are not limited to the use of speed restrictions, regular road maintenance, restriction of construction activity during high wind days, and silica dust controls when handling sand used in hydraulic fracturing operations. Additional management practices such as road surfacing, wind breaks and barriers, or automation of wells to reduce truck traffic may also be used to minimize fugitive dust emissions. Engineered sound walls no less than 16’ tall will be used along the north and east sides to mitigate dust impacts to these residences. |
| Dust control | Form: (02A )
402118768
12/22/2022 | • When Noble Energy is required to suppress dust,
o Only use fresh water source (non-potable) when watering areas within 300 feet of the ordinary high water mark of any water body.
o Maintain a current Safety Data Sheet (SDS) in their company vehicle when using a dust suppressor
containing chemicals, in accordance with OSHA Standard 29 CFR 1910.1200 (HazardCommunication)
as well as local and State requirements.
o Ensure watering practices are not creating additional hazards on access roads (slick roads,
muddy conditions, etc.) |
| Dust control | Form: (02A )
402118768
12/22/2022 | o Only use fresh water source (non-potable) when watering areas within 300 feet of the ordinaryhighwater mark of any water body.
o Maintain a current Safety Data Sheet (SDS) in their company vehicle when using a dust suppressor
containing chemicals, in accordance with OSHA Standard 29 CFR 1910.1200 (HazardCommunication) as well as local and State requirements.
o Ensure watering practices are not creating additional hazards on access roads (slick roads, muddy conditions, etc.)
• All soil piles created by construction activities will be managed utilizing Hydro-mulch, straw crimping, and/or tracking methods to prevent dust from exiting location and creating a hazard during pre-production activities. Soil piles will be graded and/or seeded to prevent erosion and the generation of dust post-production.
• Noble Energy will minimize the amount of fugitive dust using speed restrictions. All vehicles will be subject to a speed limit of 20 MPH on all lease roads to minimize dust.
• Noble Energy will mitigate the creation of fugitive dust through regular road maintenance as coordinated through agreements with Relevant Local Governments or Agencies with road jurisdiction.
• Noble Energy will use methods including wind breaks and barriers, road or facility surfacing, and soil stockpile stabilization measures to suppress fugitive dust caused solely by wind.
• Noble Energy will avoid the creation of fugitive dust by restricting or limiting construction activity during high wind days.
• Noble Energy will minimize fugitive dust caused by their operations, or dust originating from areas disturbed by their Oil and Gas Operations that becomes windborne by utilizing the dust suppression methods mentioned above.
• Noble Energy will not use any of the following fluids for dust suppression:
o Produced water
o E&P waste or hazardous waste
o Crude oil or any oil specifically designed for road maintenance
o Chemicalsolvents
o Process fluids
• Access road will be watered or treated with one of the following commercial magnesium chloride dust suppressants, as needed:
o Roadsaver
o Roadsaver Compaction Aid
o DuraBlend
• Prior to the application of dust suppressant to any county or public roads, coordination will be conducted with Weld County Department of Public Works by Noble Energy and any relevant vendors.
• Noble Energy will maintain safety data sheets (“SDS”) for any chemical-based dust suppressant and make the SDS available immediately upon request to the COGCC Director and to the Local Government. Operators will maintain SDS for any chemical-based dust suppressant until the site passes final site Reclamation and transfer the records upon transfer of property ownership.
• All secondary roads created for this project (non-public roadways) will be finished with ½” – ¾” crushed stone road base.
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| Construction | Form: (02A )
402118768
12/22/2022 | At the time of construction, all leasehold roads shall be constructed to accommodate local emergency vehicle access requirements and shall be maintained in a reasonable condition. Noble Energy plans on building the access road off Weld County Road 51 for Drilling and Completion activities. Local government will not require coordination of a traffic plan with the local jurisdiction for this location. |
| Construction | Form: (02A )
402118768
12/22/2022 | Berms or other secondary containment devices shall be constructed around crude oil, condensate, and produced water storage tanks and shall enclose an area sufficient to contain and provide secondary containment for one-hundred fifty percent (150%) of the largest single tank. Standard secondary-containment construction includes the installation of a contiguous spray liner installed and underlaying the entire tank battery, then anchored into the steel-walled containment berms. Berms, liner or other secondary containment devices shall be sufficiently impervious to contain any spilled or released material. All berms and containment devices shall be inspected at regular intervals and maintained in good condition. No potential ignition sources shall be installed inside the secondary containment area unless the containment area encloses a fired vessel. Tertiary containment, such as an earthen berm, will be installed as required for production facilities within 500 feet of a down-gradient surface water feature. All berms will be visually checked periodically to ensure proper working conditions. |
| Construction | Form: (02A )
402118768
12/22/2022 | All newly installed or replaced crude oil and condensate storage tanks shall be designed, constructed, and maintained in accordance with applicable regulations. Noble shall maintain written records verifying proper design, construction, and maintenance, and shall make these records available for inspection by the Director. |
| Construction | Form: (02A )
402118768
12/22/2022 | All surficial activities performed by Noble during facility construction and production will be protective of the environment. Bulk liquids used or stored will be containerized in appropriate vessels and underlain by an impervious liner and containment berm capable of containing any spill or leak from that vessel. Valves and temporary flow lines associated with facility site activities will be inspected daily while in service. Any spills identified on location will be immediately contained, recovered, disposed of, remediated, and reported per COGCC Series 900 Rules (912. Spills and Releases). |
| Construction | Form: (02A )
402118768
12/22/2022 | Grading and drainage of the pad will be designed with structural controls to ensure flow away from sensitive surface water resources to ensure surficial flow runs to the pad’s perimeter diversion channel and then directly into the sediment-trap structure. |
| Construction | Form: (02A )
402118768
12/22/2022 | Unless otherwise requested by the Surface Owner, well sites constructed within the Designated Setback location will be fenced to restrict access by unauthorized persons. |
| Construction | Form: (02A )
402118768
12/22/2022 | • Noble Energy will direct site lighting downward and inward, such that no light shines above a horizontal plane passing through the center point light source.
• Noble Energy will use dampening and focusing technology within fixtures that obscures, blocks, or diffuses the light to reduce light intensity outside the boundaries of the Oil and Location
Noble Energy will minimize lighting when not needed using timers or motion sensors.
• Noble Energy will use full cut-off lighting to minimize light pollution and obtrusive lighting.
• Noble Energy will use lighting colors that reduce light intensity, including using neutral white lights.
• Noble Energy will use low-glare or no-glare lighting that utilizes high-mount/narrow-beam angle settings.
• When Noble Energy has active operations involving personnel at an oil and gas location, Noble Energy will provide sufficient lighting to ensure the safety of all persons on or near
the site.
• Whenever feasible, Noble Energy will schedule regular production activities during daylight hours to maximize the use of natural lighting.
• Noble Energy will regularly identify permanent and temporary housing of resident wildlife and ensure locations are recorded in wildlife reports kept in-house.
• During pre-production activities, Noble Energy will conduct daily walkthroughs of the location to ensure no wildlife have built nests in or around lighting sources. If nests are
found, direction will be issued to either remove the nest or temporarily disable the lighting source until nest is abandoned.
• Adjusting the lighting sources to point downward and towards the interior of location. |
| Noise mitigation | Form: (02A )
402118768
12/22/2022 | Temporary operations - Baseline surveys will be completed at the designated points of compliance prior to construction activities commencing. Construction activities at this location will be conducted during daylight hours only. Noise monitoring will be conducted at the points of compliance during the construction phase. Once the facility goes into production, active sound level readings may be collected upon request to ensure accurate conditions anticipated by the sound models. |