1987-12-01_PERMIT FILE - C1981017 (188)

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COLORADO DEPARTMENT OF HEALTH Water Quality Control Division Rationale - Page 9 PERMIT NUMBER: CO-0000396 DISCUSSION AND SPECIAL CONDITIONS (Cont 'd.) case to provide a factor of safety in the salt loading calculations. The permittee has indicated that bulk storage of fuel does take place at the facility. Thus, an SPCC plan will be required as discussed on page 10 of the permit. The permittee has not submitted the one time analysis requested in the permit renewal applica- tion. However, the permittee has indicated that this information will be submitted once a discharge has occurred. The parameters to be analyzed are shown on page 6 of the permit. As discussed on page 7, all mine water discharges must be sampled. In this case, a total of 4 discharges should be sampled. One from each of 002 thru 005, the mine dewatering points. This permit may be re-opened and modified as discussed on pages 15 and 16 if there is a significant change in operations at the facility, or if there is a significant change in state or federal water quality standards or technology based effluent limitations. Donald H. Simpson March 10, 1982 Pursuant to Section 122.62 (c) (2) of the May 19, 1980 Consolidated Permit Regulations, any permit' issued after June 30, 1981 must contain BAT effluent limitations. On May 18, 1982, the Division lost regulatory authority to utilize Best Engineering Judgement for establish- ment of technology based effluent limitations on a case-by-case basis. Such action was the result of a determination by the Legislative Joint Committee on Legal Services. Loss of this authority prevents total compliance with federal regulation and thus EPA may veto this permit and issue a federal permit, consistent with provisions of Section 122.62 (_c) (2) .