Laserfiche WebLink
PARTI <br />Page No. 9 <br />Permit No.: CO-0040827 <br />12. "Seven (7) day average" means, with the exception of fecal coliform bacteria, the arithmetic mean of all sales collected in <br />a seven (7) consecutive day period. For fecal coliform bacteria, it is the geometric mean of all samples taken in a seven (7) <br />consecutive day period. Such seven (7) day averages shall be calculated for all calendar weeks, which aze defined as <br />beginning on Sunday and ending on Saturday. If the calendaz week overlaps two months (i.e. the Sunday is in one month and <br />the Saturday in the following month), the seven (7) day average calculated for that calendaz week shall be associated with the <br />month that contains the Saturday. Samples may not be used for more than one (1) reporting period. (Not applicable to fecal <br />coliform determinations.) <br />13. "Thirty (30) day average" means, except for fecal coliformbacteria, the arithmetic mean of all samples collected during a <br />thirty (30) consecutive-day period For fecal coliform bacteria, it is the geometric mean of all samples collected in a thirty <br />(30) day period. The permittee shall report the appropriate mean of all self-monitoring sample data collected during the <br />calendaz month on the Dischazge Monitoring Reports. Samples shall not be used for more than one (1) reporting period. <br />14. "Total Metals" means the concentration of metals determined on an unfiltered sample following vigorous digestion (Section <br />4.1.3), or the sum of the concentrations of metals in both the dissolved and suspended fractions, as described in "Manual of <br />Methods for Chemical Analysis of Water and Wastes," U.S. Environmental Protection Agency, Mamh 1979, of its equivalent. <br />I5. "Total Recoverable Metals" means that portion of a water and suspended sediment sample measured by the total recoverable <br />analytical procedure described in "Methods for Chemical Analysrs of Water and Wastes, " U.S. Environmental Pmtectioa <br />Agency, Mamh 1979 or ita equivalent. <br />16. "Twenty four (24) hour composite" sample is a combination of at least eight (8) sample aliquots of at least 100 milliliters, <br />collected at equally spaced intervals during the operating hours of a facility over atwenty-four (24) hour period For volatile <br />pollutants, aliquots most be combined in the laboratory immediately before analysis. The composite must be flow <br />proportional; either the time interval between each aliquot or the vohtme of each aliquot must be proportional to either the <br />wastewater or effluent flow at the time of sampling or the iota( wastewater ar effluent flow since the collection of the previous <br />~,;;;~j:] aliquot Aliquots maybe collected manually or automatically. <br />~:.. <br />17. "Twice Monthly" monitoring frequency means that two samples shall be collected each calendaz month on separate weeks <br />with at least one full week between the two sample dates. Also, there shall be at least one full week between the second <br />sample of a month and the fast sample of the following month. <br />18. "Visual" observation is observing the discharge to check for the presence of a visible sheen or floating oil. <br />19. "Water Quality Control Division" or "Division" means the Colorado Water Quality Control Division as established in 25-8- <br />101 et al. <br />Additional relevant definitions are found in the Colorado Water Quality Control Act, CRS §§ 25-8-101 et seg, the Colorado <br />Dischazge Permit System Regulations, Regulation 61 (5 CCR 1002-61) and other applicable regulations. <br />D. SPECIAL REQUIREMENTS <br />1. Materials Containment Plan <br />Pursuant to Sections 61.8(3)(8) and (r) of the Colorado Discharge Pemtit System Regulations, the permittee is required to <br />submit a Materials Containment Plan. Such a plan was previously submtted to the Division. An update of the plan shall be <br />submitted to the Division within ninety (90) days after the effective date of this permit and must be implemented. The update <br />of the plan shall include changes in the information and pracedmes for the prevention and containment of spills of materials <br />used, processed or stored at the facility which if spilled would have a reasonable probability of having a visible or otherwise <br />detrimental impact on waters of the State ti ~. The updated plan shall include, but not necessarily be limited to: <br />a. An updated history of the spills which have occuaed in the three (3) years preceding the effective date of this perrnit. <br />The history shall include a discussion on the cause of the spills and a the preventative measm•es designed to eliminate <br />them firom reoccurring; <br />Last Revised S/2S/2003 <br />