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400335431 15 10338 CARRIZO OIL & GAS INC

500 DALLAS STREET #2300

HOUSTON TX 77002 Tina Taylor 713 328-1000 713 328-1060 Tina Taylor Regulatory Compliance 2012-10-10T13:08:20.997-06:00 DRAFT ttaylor 2012-10-10T13:08:20.997-06:00 ttaylor tina.taylor@crzo.net 0.00000 tina.taylor@crzo.net ttaylor ttaylor 2012-10-10T13:20:15.623-06:00 400335431 P WEP Freshwater Pit ADAMS NENE 28 3S 64W 6 39.767250 -104.547330 Lined 0 N 5510 282 560 240 210 12 96786 PPL 20 20 Y 28-41-3-64 N 05 00 � � � � � � � � � � � � Y Planned N � Y � � � � � � Multi-Well Freshwater only Pit 400335384 400335431 400335431 PIT PERMIT SUBMITTED 400335431.pdf 400335431 400335384 02A WEP Freshwater Pit 28-41-3-64 c237b6c3-9503-4308-b5e7-4079e589d37d 400335431 8 Planning A Form 15 Pit Report will be submitted within 30 days of construction of the fresh water storage pit. cc8ce414-af36-41e1-9ab5-4e3f585cda99 400335431 7 Pre-Construction The COGCC to be notified 48 hours prior to construction of the Fresh Water Storage Pit. a5b33302-6a9d-47f8-beb8-7314c47ba431 400335431 6 Construction The location will be fenced and the fenced area will include the Fresh Water Storage Pit. eb23bf69-ea8e-4798-af4f-7dbad06e37f6 400335431 9 Site Specific Operator will participate in the Colorado Oil & Gas Association Voluntary Baseline Groundwater Quality Sampling Program. Operator will implement interim reclamation measures immediately after construction of the location to stabilize cut and fill slopes, stabilize the topsoil and spoil stockpiles, establish desirable vegetation and control weeds on the location. 1418953f-1f01-4f3e-94d3-aabe79df111f 400335431 5 Site Specific Fresh Water Storage Pit shall contain fresh water only and signage prohibiting the use of the pit for any fluid that does not come from municipal, irrigation or surface water source. 263b1985-a3c5-450f-93d8-c0ae4f5f684f 400335431 1 Material Handling and Spill Prevention Operator will ensure 110 percent secondary containment for any volume of fluids contained at the well site during drilling and completion. Operator will implement best management practices to contain any unintentional release of fluids. 554b2016-a9db-45af-8972-71b0211c423b 400335431 2 Storm Water/Erosion Control Operator has designed the well pad with insloping and a storm water control ditch to prevent storm water run-on/runoff and the release of fluids from the location. See attached Construction Layout Drawing. e9b353c8-6c4b-424f-aa6d-80d08ae5c2c5 400335431 3 Site Specific Fresh water for the Fresh Water Storage Pit comes from water provider; water sources permitted for consumable industrial use. 58c73d00-1982-4a50-91ff-d7cecdcf7c43 400335431 4 Material Handling and Spill Prevention Operator shall not allow any fluids to flow back to the Fresh Water Storage Pit/Pond. Thread was being aborted.