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<br />Average Flow <br />(Gallons per day) <br /> <br />0-10,000 <br />10,000-50,000 <br />50,000-100,000 <br />100,000-250,000 <br />Over 250,000 <br /> <br />Frequency of <br />Sampling <br /> <br />Number of Analysis <br />per Quarter <br /> <br />Twice a Quarter <br />Once a Month <br />Twice a Month <br />Once a Week <br />Twice a Week <br /> <br />2 <br />3 <br />6 <br />13 <br />26 <br /> <br />C. <br /> <br />Analytical Reporting Requirements <br /> <br />1. <br /> <br />Sampling shall be of representative flows and samples <br />shall be taken and preserved as described in the most <br />current edition of .Standard Methods for the <br />Examination of Water and Wastewater., and E.P.A. <br />.Methods for Chemical Analysis of Water and Wastes. <br /> <br />4. <br /> <br />5 <br /> <br />2. <br /> <br />Analytical methods shall be those described by E.P.A. <br />in 40 CFR 136 and E.P.A. .Sampling and Analysis <br />Procedures for Screening of Industrial Effluents for <br />Priority Pollutants., April 1977. <br />An in-house or contract laboratory may perform the <br />analysis but a (quality control (q.c.) statement) shall <br />be included in each Quarterly Report. The q.c. <br />statement shall report on recovery of spiked samples(s) <br />and on sample duplicate(s) precision. Industrial <br />Sources required to sample 16 or less times per year <br />shall perform q.c. analysis on 2 samples a year; <br />sources sampling more than 16 times a year shall <br />perform q.c. analysis on 10% of their sample load. <br />Pollutant Analysis Requirements are dependent <br />process wastewater flow. <br />a. Industrial Sources discharging onl~ by <br />pretreatment of process wastewater shall <br />for pH and the major pollutant of the <br />(total chromium or Cyanide, A, or other). <br />Industrial Sources disch~rgàng less than 10,000 <br />G.P.D. shall analyze for' <br />Cyanide, A(CN, A) (Cyanide <br />chlorination) <br />Lead (pb) <br />Cadmium ( Cd ) <br /> <br />3. <br /> <br />on <br /> <br />batch <br />analyze <br />process <br /> <br />b. <br /> <br />amenable <br /> <br />to <br /> <br />6 <br /> <br />Recommended: <br /> <br />major pollutant of the process <br /> <br />All pollutants shall be analyzed for semiannually. If a <br />pollutant is found to be less than 0.10 mg/l, and that pollutant <br />is not part of the process or raw materials, as stated" by the <br />Source, then additional testing for that pollutant in the semi- <br />annual period is no~ required. <br /> <br />-24- <br />