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<br />PART I <br />Page No. 31 <br />Permit No.: CO-0000221 <br />as violations of the permit limit. The present lowest method detection limits for specific parameters (which have limitations <br />that are, in some cases, less than or equal to the detection limit) are as follows: <br />Effluent Characteristic <br />Arsenic <br />Cadmium <br />Chromium <br />Chromium, Hexavalent <br />Copper <br />Lead <br />Mercury <br />Nickel <br />Phenols <br />Selenium <br />Silver <br />Zinc <br />Method Detection Limits u M <br />10 <br />0.5 <br />10 <br />10 <br />5 <br />5 <br />0.003 <br />20 <br />50 <br />10 <br />0.2 <br />10 <br />These limits apply to the total recoverable and potentially dissolved fraction of metals. <br />The procedure for determining settleable solids is contained in 40 CFR 434.64. The method detection limit for measuring <br />settleable solids under this part shall be 0.4 ml/1. <br /> <br />4. Records <br />The permittee 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 />e. The analytical techniques or methods used; <br />f. The results of such analyses; and <br />g. Any other observations which may result in an impact on the quality or quantity of the discharge as indicated in 40 CFR <br />122.44 (i)(1)(iii). <br />The permittee shall retain for a minimum of three (3) years records of all monitoring information, including all original strip <br />chart recordings for continuous monitoring instrumentation, all calibration and maintenance records, copies of all reports <br />required by this permit and records of all data used to complete the application for this permit. This period of retention shall <br />be extended during the course of any unresolved litigation regarding the discharge of pollutants by the permittee or when <br />requested by the Division or EPA. <br />5. Flow Measurine Device <br />If not already a part of the permitted facility, within ninety (90) days after the effective date of the permit, a flow measuring <br />device shall be installed to give representative values of effluent quantities at the respective discharge points. Unless <br />specifically exempted, or modified in Part I.E.S of this permit, a flow measuring device will be applicable at all designated <br />discharge points. <br />At the request of the Division, the permittee shall show proof of the accuracy of any flow-measuring device used in obtaining <br />data submitted in the monitoring report. The flow-measuring device must indicate values within ten (10) percent of the actual <br />flow being discharged from the facility. <br />6. Signatory and Certification Requirements <br />a. All reports and other information required by the Division, shall be signed and certified for accuracy by the permittee in <br />accord with the following criteria: