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PARTI <br />Page No. 16 <br />Pcrtnit No.: CO-0036776 <br />E. GENERAL MONITORING, SAMPLING, AND REPORTING REQUIILEMENTS <br />1. Routine Reporting of Data <br />The DMR fowls consist of four pa es -the top "original" copy and three attached no-cazbon-required copies. After the DMR form <br />has been filled out and signed, the four copies must be sepazate~ and distributed as follows: <br />The fast on ' al signed copy of each discharge monitoring report (DMR) shall be submitted to the Division at the following address: <br />Colorado Department of Public Health and Environment <br />Water uality Control Division <br />WQCD- -B2 <br />4300 Cherry Creek Drive South <br />Denver, Colorado 80246-1530 <br />Additional copies are for the pemrittee records. The Discharge Monitoring Report forms shall be filled out accurately and <br />completely in accordance with requirements of this permit and the instructions on the forms. They shall be signed by an authorized <br />person as identified in Part LE.6. <br />Calculations for all limitations which require the averaging of measurements shall utilize an arithmetic mean unless otherwise <br />specified by the Division in the permit. <br />2. Representative Sampling <br />Samples and measurements taken as required herein shall be representative of the volume and nature of the monitored discharge. All <br />samples shall be taken a[ the monitoring points specified in this permit and, unless otherwise specified, before the effluent joins or rs <br />diluted by an other wastesheam, body of water, or substance. Monitoring points shall not be changed without notification to and <br />approval by the Division. <br />If the pemtittee monitors at the point of discharge any pollutant limited by the permit more frequendy than required by the permit <br />using approved test procedures or as specified m the permit, the result of this monitoring shall be included m the calculation an~ <br />reportmg of data to the Division. <br />3. Analtical and Sampling Methods for Monitoring <br />The pen»ittee shall install, calibrate, use and maintain monitoring methods and equipment, including biologtcal and indicated <br />pollutant monitoring methods. All sampling shall be performed by the ppemuttee according to specified methods in 40 C.F.R. Part <br />136; methods approved by EPA pursuant to 40 C.F.R. Part 136; or meffiods approved by the Dtvision, in the absence of a method <br />specified in or approved pursuant to 40 C.F.R. Part 136. The analytical method selected for a pazameter shall be the one that can <br />measure the lowest detected limit for that parameter unless the permit limitation or stream standazd for those pazameters not limited, <br />is within the testing range of another approved method. When requested in writing, the Division may approve an al[emative <br />analytical procedure or any significant modification to an approved procedure. <br />When the most sensitive analytical method which complies with this part, has a detection limit greater than or equal to the pemtit <br />limit, the permittee shall report "less than (the detectable limit)," as appropriate. Such reports shall not be considered as vtolahons of <br />the penult limit. The present lowest method detection limits for speck pazameters (which have limitations that are, in some cases, <br />less than or equal to the detection limit) are as follows: <br />Effluent Characteristic Method Detection Limits m 7 <br />Arsemc <br />Total Residual Chlorine O.OS <br />Cadmium 0.0003 <br />Chromium 0.01 <br />Chromium, Hexavalent 0.01 <br />Copper O.OOS <br />Lead O.OOS <br />Total Mercury 0.00025 <br />Nickel O.OS <br />Selenium 0.01 <br />Silver 0.0002 <br />Zinc 0.05 <br />These limits apply ro the total recoverable, the potentially dissolved fraction, and the dissolved fraction of metals where approved <br />methods exist. <br />For hexavalent chromium, samples must be unacidified so dissolved concentrations will. be measured rather than potentially <br />dissolved concentrations. <br />The rocedme for determining settleable solids is contained in 40 CFR 434.64, The method detection 1-:mit for measuring settleable <br />solids under this part shall be 0.4 m]/1. <br />4. Records <br />The pemtittee shall establish and maintain records. Those records shall include the following: <br />a, The date, type, exact location, and time of sampling or measurements; <br />b. The individual(s) who performed the sampling or measurements; <br />c. The date(s) the analyses were performed; <br />d. The individual(s) who performed the analyses; <br />Revised 4/19/2004 <br />