2011-01-03_GENERAL DOCUMENTS - P2008043 (3)

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D. SHALLOW INJECTION WELL OPERATION AND MAINTENANCE 1. Injection Locations. Injection location shall be limited to the injection well shown in Figure 1 of Appendix A of this permit. 2. Injection Fluid Limitation. The permittee shall not inject any hazardous substances, as defined by 40 CFR, Part 261, at any time during the operation of the injection well; and further, no substances other than the groundwater pumped from the A2 Sandstone of the Upper Fox Hills Formation shall be injected, unless allowed by permit modification. 3. Injection Fluid Analysis. Before the aquifer-pump test begins, samples of A2 sandstone groundwater shall be collected from the injection well. Before injection begins, composite samples of the groundwater pumped from the A2 Sandstone of the Upper Fox Hills Formation shall be collected from the storage tanks. These samples shall be analyzed for Total Coliforms using an EPA approved method, Total Metals as shown in Table 1, Volatile Organic Compounds using EPA Method 524.2, Semi-volatile Organic Compounds using EPA Method 525.2, and Total Petroleum Hydrocarbons using EPA Method 1664. Alternative analytical methods may be used with approval by EPA before sample analyses are performed. Table 1: Permit Limits and Approved Analytical Methods for Total Metals Parameter Name Permit/LL)mit Standard Type* Analytical Methods !Arsenic 10 MCL I200.7, 200.8, 2009 ;Barium - i 2,000 -r---------____ IMCL ?? ;200.7, 200.8 'Cadmium 5 !MCL ;200.7, 200.8, 200.9 Chromium(total ;Lead i 100 15 IMCL IMCL-TT 200.7, 200.8, 200.9 1200.8, 200.9 _ - _ ;Mercury (inorganic) 2 _ T EMCL I245.1, 245.2, 200.8 Selenium 50 IMCL 0 200.9 _ :Silver ??- 100 HA-Lifetime 1200.7, 200.8, 200.9 4. Best Management Practices. The permittee shall operate the injection system in such a way that best environmental management practices are followed. Best Management Practices in the case of this permit shall consist of preventing the contamination of groundwater extracted from the A2 sandstone of the Upper Fox Hill Formation before it is reinjected. To verify the storage tanks will not contaminate the A2 sandstone groundwater during storage, the permittee shall verify that requirements of the Division of Reclamation, Mining, and Safety (DRMS) have been met by submitting the following information to the Director: i. Written documentation that the requirement for cleaning of the storage tanks has been fulfilled. ii. Written documentation that the requirement for providing the history of tank contents, including at least the most recent previous tank use event, has been fulfilled. Powertech (USA), Incorporated Final UIC Class V Permit No. C051237-08412 Page 3 of 14