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MONITORING AND REPORTING PROGRAM -4- <br /> STOCKTON COGENERATION COMPANY <br /> SAN JOAQUIN COUNTY <br /> entering North Littlejohns Creek. Grab samples shall be representative of the volume and quality of the <br /> discharge. Time of collection samples shall be recorded. The effluent tests must be conducted with <br /> concurrent reference toxicant tests. Both the reference toxicant and effluent test must meet all test <br /> acceptability criteria as specified in the chronic manual. If the test acceptability criteria are not achieved, <br /> then the Discharger must re-sample and re-test within 14 days. Chronic toxicity monitoring shall include <br /> the following: <br /> Species: Pimephales promelas, Ceriodaphnia dubia, and Selenastrum capricornutum <br /> The Discharger shall conduct the chronic toxicity test quarterly(4 times per year) using 100% effluent <br /> and 2 controls. If no toxicity is found in any of the tests during the first year of quarterly testing, the <br /> frequency of testing shall be reduced to annually. If toxicity is found in any of the effluent tests, the <br /> Discharger must immediately retest using the full sampling protocol of 5 dilutions listed below and <br /> initiate the TIE pursuant to Provision 6 of the Order. Thereafter, quarterly testing must be conducted for <br /> the duration of the permit. <br /> Dilution Series: Dilutions (%j Controls <br /> 100 50 25 12.5 6.25 <br /> Creek Lab <br /> Water Water <br /> % WWTP Effluent 100 50 25 12.5 6.25 0 0 <br /> % Dilution Water* 0 50 75 87.5 93.75 100 0 <br /> % Lab Water 0 0 0 0 0 0 100 <br /> * - Dilution water shall be receiving water from North Littlejohns Creek taken upstream from <br /> the discharge point. <br /> LAND APPLICATION AREA MONITORING <br /> Application of wastewater to the land application area shall be monitored to prevent overloading the area <br /> with wastewater constituents which can cause groundwater degradation. The following parameters shall <br /> be calculated and reported in the monthly monitoring reports. <br /> Constituents Units Type of Sample FrequencX <br /> Flow mgd Meter Daily <br /> Application Area acres Measured Daily <br /> Hydraulic Loading Rate inches/acre/month Calculated Monthly <br /> In addition, the Discharger shall maintain a log of discharges to the land application area. Notations <br /> shall be made in a bound logbook record which check is receiving wastewater, and observations of <br /> ponding water, soil clogging, odors, insects, or other potential nuisance conditions. The notations shall <br />