2009-03-06_PERMIT FILE - C1981012A (6)

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PARTI Page No. 22 Permit No.: CO-0000906 • Ca" = 20.0 mg/meq (atomic weight of 40.078, charge of 2) Mg` = 12.15 mg/meq (atomic weight of 24.3, charge of 2) samples 15. "Thirty (30) day average" means, except for feca?he lino of calculating the average concentration, zero should ble used in during a thirty (30) consecutive-day period. For purpose ean of place of any value that is less than the reporting li hmit. e Forfecal oalculating he geometric ometric bacteria, mean,ta value of one be samples collected in a thirty (30) day period. Fo purpose of c "< a should e used in place of any value that is less than the reporting limit. If all values are less than the reporting limit, x" be reported, where "x" is the reporting limit. Discharge The ttMonitoring Reportsp Samples shall n t be used for more than one (1)a collected during the calendar month on he reporting period. rocedure used during 16. "Total coliform 30-day average lime 30-dagf 2.2colonies/ 0 nil sabased on the Multiple T be Fermentation coliform testing. For this permit, the y average limit o Technique (MTFT). If the permittee decides to change to the other method of analysis, specifically the Membrane Filter average Technique (MFT), the permittee must request an amendment to this permit to establish athe nalytical method sliimit at,1.0 colonies/100 ml. The daily maximum limit of 23 colonies/100 ml applies regardless on (Sectio 17. "Total Metals" means the concentration of metals termined on an of metals in both the i solved andrsuspended frac ons, avigorous s described in iManual ofn 4.1.3), or the sum of the concentrations Methods for Chemical Analysis of Water and Wastes, U.S. Environmental Protection Agency, March 1979, or its equivalent. measured by the total recov 18. "Total Recoverable Metals" means thri portionfor Chemical Anal sus of Water and WastrspU.S Environme tal Protectionerable analytical procedure described in Me Agency, March 1979 or its equivalent. • 19. "Twenty four (24) hour composite" sample is a combination of at least eight (8) sample aliquots of at least 100 milliliters, le collected at equally spaced intervals during the operating hours of a facility over a twenty-four (24) hour period. pollutants, aliquots must be combined in the laboratory immediately before analysis. The composite must be flow proportional; either the time interval between each aliquot or the volume of each aliquot must be proportional to either the wastewater or effluent flow at the time of sampling or the total wastewater or effluent flow since the collection of the previous aliquot. Aliquots may be collected manually or automatically. 20. "Twice Monthly" monitoring the two sample dates. samples Also, there shall be at east one fullwe k betty en he secondks with at least one full week sample of a month and the first sample of the following month. 21. "Visual" observation is observing the discharge to check for the presence of a visible sheen or floating oil. 22. "Water Quality Control Division" or "Division" means the state Water Quality Control Division as established in 25-8-101 et al.) Additional relevant definitions are found in the Colorado Water Quality Control Act, CRS §§ 25-8-101 et se g., the Colorado Discharge Permit System Regulations, Regulation 61 (5 CCR 1002-61) and other applicable regulations. D. GENERAL MONITORING, SAMPLING AND REPORTING REQUIREMENTS 1. Routine Reporting of Data Reporting of the data gathered in compliance with Part I.B.1 shall be on a quarterly basis. Reporting of all data gathered shall comply with the requirements of Part I.E. (General Requirements). Monitoring results shall be summarized for each • calendar month and reported on Division approved discharge monitoring report (DMR) forms (EPA form 3320-1). One form shall be mailed to the Water Quality Control Division, as indicated below, so that the DMR is received no later than the 28th day of the following month (for example, the DMR for the first calendar quarter must be received by the Division by April 28th). If no discharge occurs during the reporting period, "No Discharge" shall be reported.