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MONITORING AND REPORTING PROGRAM -5- <br /> DEPARTMENT OF DEFENSE, DEFENSE LOGISTICS AGENCY <br /> DEFENSE DISTRIBUTION REGION WEST, SHARPE LOCATION <br /> INTERIM GROUND WATER CLEANUP SYSTEM <br /> SAN JOAQUIN COUNTY <br /> Sampling <br /> Constituents Method' Units Station Frequencv <br /> Vanadium 286.2 µg/l R-3.R-4 Annually <br /> Zinc 200.7 µg/l R-3.R-4 Annually <br /> PI-1, SM 4500 pH Units R-3,R-4 Annually <br /> Turbidity SM 2130 NTU R-3,R-4 Annually <br /> Temperature' •F R-3.R-4 Annually <br /> Electrical Conductivity µmhos/cm R-3.R-4 Annually <br /> @25•C <br /> All methods are EPA methods with the exception of methods denoted SM which are Standard Methods <br /> ' Samples taken weekly during periods of no flow in the SSJID canal <br /> Temperature and pH shall be determined at the time of sample collection <br /> In conducting the receiving water sampling, a log shall be kept of the receiving water conditions <br /> throughout the reach bounded by Stations R-1 and R-2. Attention shall be given to the presence or <br /> absence of: <br /> a. Floating or suspended matter e. Visible films, sheens or coatings <br /> b. Discoloration f. Fungi, slimes, or objectionable growths <br /> c. Bottom deposits g. Potential nuisance conditions <br /> d. Aquatic life <br /> Notes on receiving water conditions shall be summarized in the monitoring report. <br /> THREE SPECIES CHRONIC TOXICITY MONITORING <br /> Chronic toxicity monitoring shall be conducted to determine whether the effluent is contributing toxicity <br /> to the irrigation canal. The testing shall be conducted as specified in EPA 600/4-89-001. Chronic <br /> toxicity samples shall be collected at the discharge of the DDRW Sharpe discharge prior to its entering <br /> the South San Joaquin Irrigation District(SSJID) canal. Grab samples shall be representative of the <br /> volume and quality of the discharge. Time of sample collection shall be recorded. Chronic toxicity <br /> monitoring shall include the following: <br /> Species: Pimephales promelas, Ceriodaphnia dubia, and Selenastrum capricormrtum <br />