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PARTI Page ll Permit No. CO-0027146 E. GENERAL MONITORING, SAMPLING AND REPORTING REQUIItII1~NTS 1. Routine Renortinprpf Data Reporting of the data gathered in compliance with Part I.B.1 shall be on a ua basis. Reporting of all data gathered shall comply with all requirements of this Part 1.E. (General Requirements). Monitoring results shall be summarized for each calendar quarter and reported on Division approved dischazge monitoring report (DMR) forms (EPA form 3320-1). The forms shall be mailed to the agencies listed below so they are received no later than the 28th day of the month following the end of the quarter (for example, the DMR for the fast calendaz quaver must be received by the Division by Apri128th). If no discharge occurs during the reporting period, "No Discharge" shall be reported. The DMR forms consist of four pages -the top "original" copy, and three attached nocazbon-required copies. Afrer the DMR form has been filled out and signed, the four copies must be separated and distributed as follows: The first orir,; pal signed copy of each discharge monitoring report (DMR) shall be submitted to the Division at the following address: Colorado Department of Public Health and Environment WQCD-P-B2 4300 Cherry Creek Drive South Denver, CO 80246-1530 The fast duplicate signed copy of each discharge monitoring report (DMR) shall be submitted to the following agency: U.S. Environmental Protection Agency Technical Enforcement Program SENF-T Office of Enforcement, Compliance Assistance and Environmental Justice 999 18th Street, Suite 500 Denver, CO 80202-2466 The third and fourth copies aze for the permittee records. The Dischazge Monitoring Report forms shall be filled out accurately and completely in accordance with requirements of this permit and the instructions on the forms. They shall be signed by an authorized person as idemified in Part I.E.6. Calculations for all limitations which require the averaging of measurements shall utilize an arithmetic mean unless otherwise specified by the Division in the permit. 2, ~orrc ntative ~nolinq Samples and measurements taken as required herein shall be representative of the volume and nature of the monitored discharge. All samples shall be taken at the monitoring points specified in this permit and, unless otherwise specified, before the effluent joins or is diluted by any odter wastestream, body of water, or substance. Monitoring points shall not be changed without notification to and approval by the Division. If the permittee monitors at the poim of discharge any pollutant limited by the permit more frequently than requ"ved by the permit, using approved test procedures or as specified in the permit, the result of this monitoring shall be included in the calculation and reporting of data to the Division. 3. Anslvtical and Samylin~ Methods for Monitoring The permittee shall install, calibraze, use and maintain monitoring methods and equipment, including biological and indicated pollutant monitoring medrods. All sampling shall be performed by the permittee according to specified methods in 40 CFR Part 136; methods approved by EPA pursuant to 40 CFR Part 136; or methods approved by the Division, in the absence of a method specified in or approved pursuant to 40 CFR Pan 136. The analytical method seleMed far a parameter shell be the one that can measure the lowest detected Bmit for that parameter unless the permit limitation or stream standard for those parameters not limited, is within the testing range of another approved method.