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PART[ Page No. 10 Penmt No. CO-0000906 GENERAL. MONITORING, SAMPLING, AND REPORTING REQUIILEMENTS .,1 ~ Reporting of the data gathered in compliance with Part I.B.1 shall be on a tprarterlg basis. Reporting of all data gathered shall comply with the requirements of Part I.E. (General Requirements). Monitoring results shall be su~tazized for each calendar quarter and reported on Division approved discharge monitoring report (DMR) forms (EPA form 3320-1). The forms shall be roaffed 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 quarter must be received by the Division by April 28th). If no dischazge occurs during the reporting period, "No Discharge" shall be reported. The DMR forms consist of four pages -the top "original" copy, and three attached no-carbon-required copies. After the DMR form has been filled out and signed, the four copies must be separated and distributed as follows. The fast nrginal 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 W QCD-PE-B2 . 4300 Cherry Creek Drive South Denver, CO 80222-1530 The other copies are for the permittee records. The Discharge Monitoring Report forms shall be filled out accurately and completely in accordance with requirements of this permit and the instmctions on the forms. An authorized person as identified in Part I.E.6 shall sign them CalcuLttions for all limitations, which require the averaging of measurements, shall utilize an arithmetic mean unless otherwise specified by the Division in the permit. RPprecentative Rammling . Samples and measurements taken as required herein shall be representative of the volume and nature of the monitored discharge. All sales shall be taken at the monitoring points specified in this pemvt 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 rite permittee 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 pernut, the result of this monitoring shall be included in the calculation and reporting of data to the Division. 3_ Bnalvtical and Campling Mnthndc fnr Mnnitnrino 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 the permittee according to specified methods in 40 C.F.R. Part 136; methods approved by EPA pursuant to 40 C.F.R Part 136; or methods 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 be the one that can measure the lowest detected limit for that parameter unless the pemrit limitation or stream standazd 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 Dart, has a detection limit greater than or equal to the permit limit, the permittee shall report "Iess than (the detectable limit)," as appropriate. Such reports shall not be wnsidered as violations of the permit limik •