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PARTI <br />Permit No. CO-0029599 <br />Page No. 17 <br />E. GENERAL MOMTORING, SAMPLING AND REPORTING REQUII2EMENTS <br />1. Routine Reporting of Data (continued) <br />Additional copies are for the permittee records. The Discharge Monitoring Report forms shall be filled out <br />accurately and completely in accordance with requirements of this permit and the instructions on the forms. They <br />shall be signed by an authorized person as identified in Part I.E.6. <br />Calculations for all limitations which require the averaging of measurements shall utilize an aritiunetic mean unless <br />otherwise specified by the Division in the permit. <br />2. Representative Samplin¢ ' <br />Samples and measurements taken as required herein shall be representative of the volume and nature of the <br />monitored discharge. All samples shall be taken at the monitoring points specified in this permit and, unless <br />otherwise specified, before the effluent joins or is diluted by any other wastestream, body of water, or substance. <br />Monitoring points shall not be changed without notification to and approval by the Division. <br />If the permittee monitors at the point of discharge any pollutant limited by the permit more frequently than required <br />by the permit, using approved test procedures or as specified in the permit, the result of this monitoring shall be <br />included in the calculation and reporting of data to the Division. <br />3. Analytical and Samplinf; Methods for Monitorint: <br />The permittee shall install, calibrate, use and maintain monitoring methods and equipment, including biological and <br />indicated pollutant monitoring methods. All sampling shall be performed by the perntittee according to specified <br />methods in 40 C.F.R. Part 13b; methods approved by EPA pursuant to 40 C.F.R. Part 136; or methods approved <br />by the Division, in the absence of a method specified in or approved pursuant to 40 C.F.R. Part 136. The <br />• analytical method selected For a parameter shall be the one that can measure the lowest detected limit for that <br />parameter tmless the permit limitation or stream standard for those parameters not limited, is within the <br />testing range of another approved method. When requested in writing, the Division may approve an alternative <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 <br />to the permit limi[, the permittee shall report "less than (the detectable limit)," as appropriate. Such reports shall not <br />be considered as vioiations of the permit limit. The present lowest method detection limits for specific pazameters <br />(which have limitations that are, in some cases, less than or equal to the detection limi[) are as follows: <br />Copper <br />Lead <br />Total Mercury <br />Nickel <br />Selenium <br />Silver <br />0.005 mg/1 <br />0.005 mgll <br />0.00025 mgJl <br />0.05 mg/l <br />0.01 mg/1 <br />0.0002 mg/1 <br />These limits apply to the total recoverable or the potentially dissolved fraction of metals. <br />The procedure for determining settleable solids is contained in 40 CFR 434.64. The method detection limit for <br />measuring settleable solids under this part shall be 0.4 ml/I. <br /> <br />