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PART I <br />Page 12 <br />Permit No. CO-0027146 <br />E. GENERAL MONITORING, SAMPLING AND REPORTING REQUIREMENTS <br />3. Analytical and Sampling Methods for MonitorinE_(continued) <br />When requested in writing, the Division may approve an alternative analytical procedure or any significant modification to <br />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 <br />permit limit, the permittee shall report "less than (the detectable limit)," as appropriate. Such reports shall not be <br />considered as violations of the permit limit. <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 m¢/¢. <br />4. gecords <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 aaalyses; <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 dischazge as indicated in 40 <br />CFR 122.44 (i)(1)(iii). <br />The permittee shall retain for a minimum of three (3) yeazs records of all monitoring information, including all original <br />strip chart recordings for continuous monitoring instrumentation, all calibration and maintenance records, copies of all <br />reports required by this permit and records of all data used to complete the application for this permit. This period of <br />retention shall be extended during the course of any unresolved litigation regazding the dischazge of pollutants by the <br />permittee or when requested by the Division or EPA. <br />5. w u ' vi e <br />If not already a part of the permitted facility, within ninety (90) days after the effective date of the permit, a flow <br />measuring device shall be installed to give representative values of effluent quantities at the respective discharge points. <br />Unless specifically exempted or modified, a flow measuring device will be applicable at all designated discharge points. <br />At the request of the Division, the permittee shall show proof of the accuracy of any flow-measuring device used in <br />obtaining data submitted in the monitoring report. The flow-measuring device must indicate values within ten (10) percent <br />of the actual flow being dischazged from the facility. <br />6. $)pnatorv and Certification Requirements <br />a. All reports and other information required by the Division, shall be signed and certified for accuracy by the permittee <br />in accord with the following criteria: <br />i. In the case of corporations, by a principal executive officer of at least the level of vice-president or his or her duly <br />authorized representative, if such representative is responsible for the overall operation of the facility from which <br />the dischazge described in the form originates; <br />