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PART I Page No. 12 Permit No. CO-0036595 -~ E. GENERAL MONITORING, SAMPLWG AND REPORTIIVG REQUIREMENTS 1. Routine Reoortine of Data (continued) The first on final signed copy of each discharge monitoring report (DMR) shall be submitted to the Division at the following address: Colorado Department of Public Health and Envirortment WQCD-PE-B2 4300 Cherry Creek Drive South Denver, CO 80222-1530 The first duplicate signed copy of each discharge monitoring report (DMR) shall be submitted to the following U.S. Environmental Protection Agency Water Program SP2-W-P Office of Pollution Prevention, State and Tribal Assistance 999 18th Street, Suite 500 Denver, CO 80202-2466 The Wird and fourth copies are for the permittee records. The Discharge Monitoring Report fortes shall be filled out accurately and completely in accordance with requirements of this permit and the inswctions on the forms. They shall be signed by an authorized person as identified in Part I.E.6. Calculations for all limitations which require the averaging of measurements shall utiliu an arithmetic mean unless otherwise specified by the Division in the permit. 2. Representative Samoline 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 other wastestream, body of water, or substance. Monitoring points shall not be changed without notification to and approval by the Division. If the pertnittee monitors at the point of discharge any pollutant limited by the permit more frequently than required by the permit, using approved test procedures or as specified in the permit, the result of this monitoring shall be included i the calculation and reporting of data to the Division. 3. Analytical end Samoline Methods for Monitorine The perntittee shall install, calibrate, use and maintain monitoring methods and equipment, including biological and indicated pollutant monitoring methods. All sampling shall be performed by the pennittee according [o specified methods in 40 C.F.R. Part 136; methods approved by EPA pursuant to 40 C.F.R. Pan 136; or methods approved by th Division, in the absence of a method specified in or approved pursuant to 40 C.F.R. part 136. The analytical method selected Cor a parameter shall be the one that can measure the lowest detected limit for that parameter unless the permit limitation or stream standard for those parameters not limited, is within the testing range of another approved method. When requested in writing, the Division may approve an alternative analytical procedure or any significant modification to an approved procedure. When the most sensitive analytical method which complies with this part, has a detection limit greater than or equal to the permit limit, the permittee shall report "less than (the detectable limit)," as appropriate. Such reports shall not be . ~ considered as violations of the permit limit. umr w.mr ,., in,