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MONITORING AND REPORTING PROGRAM -2- <br /> CITY OF STOCKTON <br /> MAIN WATER QUALITY CONTROL PLANT <br /> SAN JOAQUIN COUNTY <br /> Constituent Units Type of Sample Sampling Frequency <br /> Total Nitrogen(1) mg/1 , lbs/day 24 hr. Composite Every Other Week <br /> Total Organic Carbon mg/l , lbs/day 24 hr. Composite Mon - Fri <br /> Total Phenols ug/l , lbs/day 24 hr. Composite Weekly <br /> (1) Daily - 7 days/week <br /> (2) Samples shall be collected at the influent channel to Pond #4 or at the <br /> effluent structure. <br /> RECEIVING WATER MONITORING <br /> All receiving water samples shall be grab samples. Those stations listed below <br /> which are in the relatively shallow upstream reaches shall be sampled at <br /> mid-depth. All stations from the settling basin downstream shall be sampled at <br /> three feet below the surface and three feet above the channel bottom. In each <br /> case samples shall be collected from midstream. Receiving water samples shall <br /> be taken from the following: <br /> Station Description <br /> R-1 Brandts Bridge, 8.0 miles south of discharge* <br /> R-2 Garwood Bridge, 0.5 miles south of discharge <br /> R-3 Settling Basin, 2.0 miles north of discharge <br /> R-4 Light 45, 2.5 miles north of discharge <br /> R-5 Light 41, 3.5 miles north of discharge <br /> R-6 Light 36, 5.0 miles north of discharge <br /> R-7 Light 24, 7.3 miles north of discharge <br /> R-8 Light 18, 9.0 miles north of discharge <br /> * The San Joaquin River normally flows south to north. <br /> Constituent Units Station Sampling Frequency <br /> Dissolved Oxygen mg/l R-1 through R-8 (1) <br />