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400138131 02A 2011-03-01T16:32:38.87-07:00 10084 PIONEER NATURAL RESOURCES USA INC

1401 17TH ST STE 1200

DENVER CO 80202 Georgina Kovacik 303 675-2611 303 294-1251 Georgina Kovacik Engineering Tech 2011-03-01T16:32:38.87-07:00 2011-03-16T16:20:46.907-06:00 UPLOADED guzmang 2011-03-01T15:23:53.87-07:00 guzmang georgina.kovacik@pxd.com 0.00000 georgina.kovacik@pxd.com IN PROCESS FreemanS FreemanS 2011-03-17T07:42:10.133-06:00 400138131 true 24-8 SHASTA LAS ANIMAS SE/SW 8 33S 67W 6 7897 510 FSL 2120 FWL 37.180470 -104.912770 4.3 2010-11-04T00:00:00-06:00 R. Coberly 2 1 2 2 2 2 2 2 2 2011-06-05T00:00:00-06:00 2011-09-05T00:00:00-06:00 7897 false false false ONSITE Drilling pit 2010-10-13T00:00:00-06:00 FEE FEE Surface Use Agreement 20040083 false 1580 4100 650 108400 238 true true Gulnare-Allens Park Complex, 5 to 35% slopes false true 2010-11-04T00:00:00-06:00 pine, cedar, oak true false true 1795 680 600 false false No false 1.00 0.50 400138131 If a pit liner is used it will be properly managed as solid waste when closed in accordance with state rules. The reference area is an undisturbed area adjacent to and to the east of the well pad. The water well used to determine the static water level is #0434254 PDOP: 14.3 400138131 400138131 FORM 2A SUBMITTED 400138131.pdf 400138131 400138164 ACCESS ROAD MAP Access_Road_Shasta_24-8.pdf 720372 400138131 400138165 CONST. LAYOUT DRAWINGS Cut-Fill_Shasta_24-8.pdf 63684 400138131 400138166 HYDROLOGY MAP Hydro_Shasta_24-8.pdf 521368 400138131 400138168 CONST. LAYOUT DRAWINGS Layout_Shasta_24-8.pdf 72215 400138131 400138170 LOCATION DRAWING Location_Shasta_24-8.pdf 1445405 400138131 400138174 LOCATION PICTURES Photos1_Shasta_24-8.pdf 271751 400138131 400138175 LOCATION PICTURES Photos2_Shasta_24-8.pdf 253344 400138131 400138179 SURFACE AGRMT/SURETY SDRagrmt_Shasta_24-8-1.pdf 636209 400138131 400138180 CONST. LAYOUT DRAWINGS SubLoc_Shasta_24-8.pdf 49546 400138131 400138183 WELL LOCATION PLAT WellPlat_Shasta_24-8.pdf 166253 400138131 400138184 PROPOSED BMPs BMP's for COGCC APD_Lined.pdf 318498 400138131 400138191 NRCS MAP UNIT DESC GA.pdf 39555 400138131 400143311 TOPO MAP Topo_Shasta_24-8_TR.pdf 1708728 400138131 400138060 02 Shasta 24-8 400138131 400138199 02 Shasta 24-8 Tr 6f597257-2737-4b09-99a1-a1e2c9a212c1 400138131 5 Storm Water/Erosion Control PIONEER NATURAL RESOURCES USA, INC STORMWATER PROGRAM-BEST MANANAGEMENT PRACTICES Pioneer’s construction activities (for disturbances 1 > 5 acres) in the Raton Basin in Las Animas County, Colorado are covered by CDPS Permit No COR-039774 which has been issued by the Colorado Department of Public Health and Environment. The construction sequence is simple and standardized for well pads, access roads, and pipelines constructed throughout the Raton Basin. Best Management Practices (BMPs) will be selected and implemented where needed to minimize potential for discharge of sediment and other pollutants to the waters of the state. Perimeter erosion controls will be implemented prior to the time of disturbance to retain sediment on site during construction activities. Then vegetation will be cleared for the construction of these sites. Well pad locations will be promptly roughened and graded after clearing. All sites will have permanent erosion controls (both structural and non-structural) installed upon completion of construction activities and exposed areas will be seeded when feasible, depending upon seasonal and weather conditions. Erosion controls will be selected on the basis of the site’s topography, amount of vegetation, soil type, and distance to surface water. BMPs will be selected and implemented during appropriate phases of construction activity. Attached is a template used for the placement of erosion control BMP's. Pioneer has identified potential pollutants of concern that may be present on a construction/well site during routine operations. Pioneer has developed a pollution prevention plan to protect from such discharges; in the event, of a discharge, a spill response and cleanup plan is in place to address such events. Spill Prevention Control and Countermeasures (SPCC) plans are not associated with individual well sites due to the absence of petroleum and condensate production and storage; however, SPCC plans are utilized for drilling rig units that operate in the Raton Basin. BMPs for Stormwater Pollution Prevention: 1. Structural Practices for Erosion and Sediment Control: Structural BMPs include, but are not limited to: diversion ditch, earthen berm, silt fence, straw bale, wattle (straw/mulch/bark), rip rap, bonded fiber matrix, erosion control blanket, coconut matting, slash, brush dam, sediment retention pond, and turnout. 2. Non-Structural Practices for Erosion and Sediment Control: Nonstructural BMPs include, but are not limited to: preservation of existing vegetation, vegetative buffer zones, slope roughening, and protection of trees. 3. Materials Handling and Spill Prevention: All drums and totes temporarily stored onsite shall be inspected regularly to ensure integrity. Secondary containment shall be utilized when necessary or required by SPCC regulations. Spill response equipment shall be available in the event of a spill or release. Onsite personnel are instructed to report all spills; Pioneer shall investigate all spills to ensure proper clean-up/remediation measures and required reporting protocol is implemented. Spill cleanup materials are onsite in the event of a release. All spills are reported according to state and federal requirements. 4. Waste Management and Disposal (Including Concrete Washout): A skid-mounted cage/dumpster is placed at a well pad during construction and is utilized while crews 2 are onsite during drilling and completion activities. Upon completion of these activities the dumpster is removed from the site. For Producing Well Sites: Pollution Control: After the construction of a well pad, and drilling and completion activities at a well have been completed only necessary production equipment is located onsite. This equipment typically includes the wellhead pump or pumpjack, small natural gas powered engine, a meter house. A lined (COGCC permitted) production pit is typically used for water disposal for each well that exists. Engine oil and produced water are the only potential pollutants that exist at a producing gas well. Well sites are visited frequently by lease operators; spills are reported and mitigated according to Pioneer policy and in accordance with applicable State and federal regulations. Good Housekeeping: Good housekeeping practices will be used to reduce the risk of spills or other accidental exposure of materials and substances to stormwater runoff. The following good housekeeping practices will be followed onsite during the construction project. • No solid materials, including building materials, shall be discharged to State waters. • Vehicular traffic will be minimized as much as possible to reduce nuisance dust and prevent further soil erosion. • Any trash generated during the project will be disposed of properly. • Any chemicals used will be kept to a minimum. Any chemical or oil spills will be cleaned up immediately in accordance with established company procedures. • Store all materials in a neat and orderly manner in their appropriate containers. • Follow manufacturers’ recommendations and company policies for proper use and disposal of products. • Monitor on-site vehicles for leaks. 400138131 Brockhausen Living Trust

6814 Heartside Dr

Sugarland TX 77479 400138131 2 1 2 2 2 2 2 2 2 400138131 C true 400138131 F true 400138131 true

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