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• • Page 7 of 19 <br />_ PERMIT N0: CO-0035653 <br />B. MONITORING AND REPORTING <br />I. Representative Sampling <br />Samples and measurements taken as 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 <br />summarized for each calendar quarter and reported on applicable <br />discharge monitoring report forms (EPA Form 3320-I), postmarked no <br />later than the 28th day of the month folloo-ring the completed quarter. <br />For example, for the Ist quarter (January, February and March) the <br />report would be mailed on or before April 28. If no discharge occurs <br />during the reporting period, "No Discharge" shall be reported. <br />Duplicate signed copies of these, and all other reports required <br />herein, shall be submitted to the Regional Administrator and the <br />State at the following addresses: <br />Colorado Department of Health U.S. Environmental Protection Agency <br />Water Quality Control Divi.si.on 1860 Lincoln Street - Suite 103 <br />Monitoring & Enforcement Section Denver, Colorado 80295 <br />4210 East 11th gvenue Attention: Enforcement - Permit Program <br />Denver, Colorado 80220 <br />3• Definitions <br />a. A "composite" sample, for moni.[oring 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 <br />discharge stream. <br />- c. An "instantaneous" measurement, for monitoring requirements, is defined <br />as a single reading, observation, or measurement using existing monitor- <br />ing facilities. <br />=4. Test Procedures <br />-- Test procedures for the analysis of pollutants shall conform to regulations <br />published pursuant to Section 304 (h) of the Act, and Colorado State Effluent <br />Limitations (10.1.4), under which such procedures may be required. <br />_i <br />_ 5• Recording of Results <br />For each measurement or sample taken pursuant to the requirements of this <br />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 sampling; <br />3/81 <br />