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COIARADO DEPARTMENT OF HEALTH, Water Quality Control Division <br />• Rationale - Page 3. Permit No. CO-0042161. <br />IV. FACILITY DESCRIPTION <br />cycle does not allow for the prescribed collection of samples, an <br />alternative methodology for obtaining chronic WET test samples has <br />been proposed by the permit tee. This method involves collecting two <br />composite samples from two adjacent discharge events. For ezample, if <br />the first composite sample were collected on Thursday, the second <br />composite sample would be collected on the following Tuesday. Both <br />samples would be sent via overnight delivery to the testing lab, and <br />the chronic teat would be initiated after receipt of the first sample. <br />The Division has determined that this approach will adequately fulfill <br />the testing requirements for chronic WET testing, due to the ezpected <br />consistency of the effluent. <br />Pages 1, lg, lj and lk of the permit have been amended. No other <br />permit requirements have been affected. <br />Rathryn Dolan <br />January 17, 1990 <br />• <br />• <br />