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PART 1 <br />Page 3 of 10 <br />Permit No.: CO-0030546 <br />• B. MONITORING AND REPORTING <br />1. Representative Sampling <br />Samples and measurements taken a5 required herein shall be representative <br />of the volume and nature of the monitored discharge. <br />2. Reporting <br />Monitoring results obtained during the previous 3 months shall be summarized <br />for each month and reported on a Discharge Monitoring Report Form (EPA No. <br />3320-1), postmarked no later than the 28th day of the month following the <br />completed reporting period. The firs[ report is due on July 28, 1976 <br />If no discharge occurs, "No Discharge" shall be reported. Duplicate signed <br />copies of these, and all other reports required herein, shall be submitted <br />to the Regional Administrator and the State at the following addresses: <br />Colorado Department of Health U.S. Environmental Protection Agency <br />Water Quality Control Division 1860 Lincoln Street - Suite 900 <br />4210 Eas[ 11th Avenue Denver, Colorado 80203 <br />Denver, Colorado 80220 Attention: Enforcement - Permit Program <br />3• Definitions <br />a. A "composite" sample, for monitoring requirements, is defined as a <br />• minimum of four (4) grab samples collected at equally spaced two (2) <br />hour intervals and proportioned according to flow. <br />b. A "grab" sample, for monitoring requirements, is defined as a single <br />"dip and take" sample collected at a representative point in the discharge <br />stream. <br />c. An "instantaneous" measurement, for monitoring requirements, is defining <br />as a single reading, observation, or measurement using existing monitoring <br />facilities. <br />4. Test Procedures <br />Test procedures for the analysis of pollutants shall conform to regulations <br />published pursuant to Section 304 (g) of the Act, and Colorado State Effluent <br />Limitations (400), under which such procedures may be required. <br />5. Recording of Results <br />For each measurement or sample taken pursuant to the requirements of <br />this permit, the permittee shall record the following information: <br />a. The exact place, date, and time of sampling; <br />• b. The dates the analyses were performed; <br />c. The person(s) who performed the analyses; <br />