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• ~ III IIIIIIIIIIIII III • hII~CL "`..govlre~ ~ / i%a~s~ p.htm I' [/ 999 S .. ppv. fie: UIG ~ ~X~ . Region 5 Example: Underground Injection Control Class II Permit Application Attachment A: Area of review methods Give the method and, if appropriate, the calculations used to determine the size of [he area of review (fixed radius or equation). The area of review shall be a fixed radius of 1/4 mile from the proposed injection well unless the use of an equation is approved in advance by the Director. Attachment B: Area of Review Submit a topographic map, extending one mile beyond the property boundaries, showing the proposed injection well and the applicable l/4 mile radius area of review. The map should include all existing wells, that penetrate the injection zone, along with any surface bodies of water, springs, mines (surface and subsurface), quarries, and other pertinent surface features, including residences and roads, and faults, if known or suspected. Also submit a tabulation of information on these wells which will include the following: well name; surface location; date drilled; state permit #; operator name; total depth and operating status. Attachment C: Corrective Action Plan Should upward fluid migration occur through the well bore of any previously unknown, improperly plugged or unplugged well due to injection of permitted fluids, injection will be shut-in until proper plugging can be accomplished. The Underground Injection Control Branch of the USEPA must be notified immediately. Should any problems develop in the casing of [he injection well, injection will be shut-in until such repairs can be made to remedy the situation. Operations shall not be resumed until the Director gives approval to recommence injection in writing. Attachment D: Maps and Cross Sections of USDWs Does not apply to Class II wells Attachment E: Name and Depth of USDWs Provide the geologic name and depth of the formation containing the lowermost underground source of drinking water (USDW), including the depth to the base of the lowest USDW and the method of identification and/or sources of information used to identify the USDW location (USDW is defined as an aquifer or its portion which contains fewer than 10,000 mg/I of total dissolved solids). Attachment F: Maps and Cross Sections of Geologic Structure of Area Does not apply to Class II injection wells. Attachment G: Geologic Data on Injection and Confining Zones Provide the name, depth, thickness, and lithologic descriptions of the injection and confining zones. Attachment H: Operating Data Estimate the proposed maximum injection rate in barrels per day (BBLlDay}. The proposed maximum injection pressure should be calculated using the following formula: Pmax=~ [0.8 - (0.433) (specific gravity of injection fluid + 0.05 )] * upper depth of injection formation J - 14.7. For a fracture gradient above 0.8 psi/ft, the owner/operator needs to submit justification data such as charts, graphs and jobs tickets from a step rate test or fracturing operation. Field data from a well in the same field, which is injecting in the same formation, may be used to justify a fracture gradient of greater than 0.8 psi/ft. This data should include charts, graphs and job tickets from a step rate test or fracturing operation on the well. The 0.05 added to the specific gravity is a safety factor. I ors 5129/99 I?:29 PM