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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> MONITORING AND REPORTING PROGRAi4 NO. 74-474 <br /> FOR <br /> LIBBEY-OWENS-FORD COHPANY <br /> LATHROP PLANT NO. 10 . <br /> SAN JOAQUIN COUNTY <br /> EFFLUENT MONITORING <br /> Discharge Site 001 <br /> Effluent samples shall be collected downstream from the last connection through <br /> which wastes can be admitted into the outfall. Samples collected from the outlet <br /> structure of ponds will be considered adequately composited. The following shall <br /> constitute the effluent monitoring program: <br /> Constituents Units Type of Sample Sampling Frequency <br /> 200C BODS mg/1, lbs/day 8 hr. Composite Every Two Weeks <br /> Total Suspended Solids mg/1, lbs/day 8 hr. Composite Every Two Weeks <br /> Settleable Natter m1/l Grab Every Two Weeks <br /> Oil and Grease mg/1, lbs/day Grab Every Two Weeks <br /> Standard Minerals mg/1 Grab Yearly <br /> tfBAS mg/l, lbs/day Grab Every Two Weeks <br /> pH Number Grab Every Two Weeks <br /> Bioassay** % Survival Grab Every Two Weeks <br /> Total Coliform number/100 ml Grab Honthly* <br /> Organisms <br /> Phosphorous mg/1, lbs/day Grab Every Two I-leeks <br /> Flow MGD -- Daily <br /> Temperature OF -- Daily <br /> *Sampling frequency will be reduced when correlation with chlorine residual is <br /> established. Chlorine residual should be determined before dechlorination as well <br /> as indicated above. <br /> **The test organisms shall be determined by the Executive Officer. <br /> Revised 10/30/75 scm/ca <br />