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PART I Page No. 14 Pemtit No. CO-0032115 ,.. GENERAL MONITORING, SAMPLING AND REPORTING REQUD2EI11ENTS I. Routine Reoortine of Data (continued) The first duplicate signed copy of each discharge monitoring report (DMR) shall be submitted to the following agency: U.S. 1?nvironmental Protection Agency Water Program gP2-W-P Office of Pollution Prevention. State and Tribal Assistance 999 I Bth Street, Suite 500 Denver, CO 80202-2466 The third and fourth copies are for the permittee records. The Discharge Monitoring Report forms :hall be filled out accurately and completely in accordance with requirements of this permit and the instructions on the forms. They shall he signed by an authorized person as identified 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. R~resentative 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 a[ 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 pe~mittee monitors at [he 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 in the calculation and reporting of data [o the Division. 3. Analytical and Sampline 1lfethods far Monitorine The permittee shall install, calibrate, use and maintain monitoring methods and equipment, including biological and indicated pollutant monitoring methods. All sampling shall be performed by [he permi[tee according to specified methods in 40 C.F.R. Part 136; methods approved by EPA pursuant to 40 C.F.R. Part I36; or m<:thods approved by the Division, in the absence of a method specified in or approved pursuant to 40 C.F.R. part 136. The analytical method selected for a parameter shall he 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 analyticaY procedure or any sieniFicant 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.