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400275766 15 10338 CARRIZO OIL & GAS INC

500 DALLAS STREET #2300

HOUSTON TX 77002 Tina Taylor 713 328-1000 713 358-1060 Tina Taylor Regulatory Compliance 2012-04-24T06:47:05.887-06:00 DRAFT ttaylor 2012-04-24T06:47:05.887-06:00 ttaylor tina.taylor@crzo.net 0.00000 tina.taylor@crzo.net ttaylor ttaylor 2012-04-24T07:16:45.653-06:00 400275766 R Debrine WELD SESE 21 8N 61W 6 40.640730 -104.203000 Lined 0 N 1825 50 3260 270 140 12 70884 0 0 PPL 20 20 Y 21-44-8-61 Y 05 123 33958 00 424270 � � � � � � � � � � � � Y Planned 2012-05-20T00:00:00-06:00 N N � � Y � � � � Multi-Well Fresh Water Storage Pit 0 400275766 400275772 OTHER Debrine 21-44-8-61 F2A Approved.pdf 125892 400275766 400275773 DESIGN: PLAN AND CROSS SECTION Debrine 21-44-8-61 Multi Well Plan .pdf 74794 400275766 400275774 TOPOGRAPHIC MAP Debrine 21-44-8-61 Hydro Map .pdf 300896 400275766 400275776 DESIGN: PLAN AND CROSS SECTION Debrine 21-44-8-61 Const Layout Draw .pdf 486086 634ecee0-6a6a-4fe3-85d2-22ea6eb93dbc 400275766 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. 02a70646-7dae-411e-beff-2aa8b5664c18 400275766 8 Planning A Form 15 Pit Report will be submitted within 30 days of construction of the fresh water storage pit. e015592c-3b96-4319-a3ad-2e75eb8916ee 400275766 3 Site Specific Fresh water for the Fresh Water Storage Pit comes from water provider; water sources permitted for consumable industrial use. 4ba3f43c-9fea-4368-8782-8fac6aad1fdc 400275766 4 Material Handling and Spill Prevention Operator shall not allow any fluids to flow back to the Fresh Water Storage Pit/Pond. 26846856-121b-44bb-93e1-9eec05bc9cd0 400275766 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. 920d70d7-83de-4950-8f3f-c2688134ac9b 400275766 7 Pre-Construction The COGCC to be notified 48 hours prior to construction of the Fresh Water Storage Pit. 37c88a6f-dbd0-4fc5-b39c-d791f0acf7ec 400275766 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. fd4dd3c6-d52f-48e6-9d19-e2862561a638 400275766 6 Construction The location will be fenced and the fenced area will include the Fresh Water Storage Pit. Thread was being aborted.