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COLORADO DEPARTMENT OF HEALTH, Water Quelity Control Division <br />Rationale - Page 9. PERMIT NUMBER: COG-850000 <br />• MONITORING FREQUENCIES: (Continued) <br />As described earlier, the permittee is required to monitor all parameters, <br />regardless of whether precipitation exemptions are sought. The permittee must <br />submit an exemption request and supporting 'proof' with the monitoring data. <br />The division will approve or deny the exemption request. If denied, then the <br />permittee will be expected to meet the primary parameters (TSS and total iron <br />for active mining, settleable solids for post-mining). <br />REPORTING: <br />Discharge monitoring reports (DMRs) are to be submitted on a quarterly basis. <br />If no discharge occurred during the quarter, the DMR should state "No <br />discharge during this reporting period." See Part I.C of the permit far <br />additional requirements. <br />MATERIALS CONTAINMENT; <br />As most facilities provide bulk storage of some volume of petroleum produces <br />or other chemicals, the permit will require adequate protection of such <br />facilities so as to prevent loss of these materials into state waters. Such <br />protection tan take various forms, however, diking in most cases will prove to <br />be the most cost effective. This provision is required as the division <br />interprets proper operation as properly addressing potential pollutant sources <br />• before problems occur. <br />CHANGES IN DISCHARGE POINTS: <br />Any time the permittee wishes to change the location of an ouCfall, add or <br />deactivaCe outfalls, or change an outfall from active to post-mining; it will <br />be necessary for the permittee to submit an amendment request. Upon approval, <br />the division will issue an updated certification. <br />Jon Kubic <br />April 30, 1987 <br /> <br />