Laserfiche WebLink
MONITORING AND REPORTING PROGRAM 5- <br /> CITY OF STOCKTON <br /> REGIONAL WATER QUALITY CONTROL PLANT <br /> SAN JOAQUIN COUNTY <br /> Dilution Series: <br /> Dilutions M Controls <br /> River Lab <br /> 144 U 25 12.5 fi.25. 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 the San Joaquin River collected within one <br /> mile of the discharge point, if flow conditions in the River allow collection of a <br /> receiving water sample free from the influence of the discharge. Otherwise, laboratory <br /> water may be used. <br /> SLUDGE MONITORING <br /> A composite sample of sludge shall be collected annually in accordance with EPA's POTW Sludge <br /> Sampling and Analysis Guidance Document, August 1989, and tested for the following metals: <br /> Cadmium Lead <br /> Chromium Nickel <br /> Copper Zinc <br /> Sampling records shall be retained for a minimum of five years. A log shall be kept of sludge <br /> quantities generated and of handling and disposal activities. The frequency of entries is <br /> discretionary; however, the log should be complete enough to serve as a basis for part of the annual <br /> report. <br /> 1. Within 90 days of the effective date of this Order, and annually by 30 January thereafter, the <br /> Discharger shall submit: <br /> a. Annual sludge production in dry tons and percent solids. <br /> b. A schematic diagram showing sludge handling facilities and a solids flow diagram. <br /> c. Depth of application and drying time for sludge drying beds. <br /> d. A description of disposal methods, including the following information related to the disposal <br /> methods used at the facility. If more than one method is used, include the percentage of <br /> annual sludge production disposed by each method. <br />