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a <br /> AONITORING AND REPORTING PROGRAM NO 5-01-178 -4- <br /> CITY OF RIO VISTA and ECO RESOURCES, INC <br /> WASTEWATER TREATMENT PLANT <br /> SOLANO COUNTY <br /> prior to it entering the Sacramento River Twenty-four hour composite samples shall be representative <br /> of the volume and quality of the discharge Time of collection samples shall be recorded The effluent <br /> tests must be conducted with concurrent reference toxicant tests Monthly laboratory reference toxicant <br /> tests may be substituted upon approval 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 Pune hales promelas larval stage , Cerioda hnia dubia, and Selenastrum <br /> capricomutum <br /> Frequency Annual <br /> Dilution Series <br /> Dilutions % Controls <br /> 10 75 50 25 125 <br /> Receiving Lab <br /> Water Water <br /> % WWTP Effluent 100 75 50 25 125 0 0 <br /> % Dilution Water* 0 25 50 75 875 100 0 <br /> % Lab Water 0 0 0 0 0 0 100 <br /> * - Dilution water shall be receiving water from the Sacramento River taken upstream from the discharge point, at <br /> monitoring station R-1 <br /> BIOSOLIDS MONITORING <br /> A composite sample of biosolids shall be collected annually in accordance with EPA's POTW biosolids <br /> Sampling and Analysis Guidance Document, August 1989, and tested for the following metals <br /> Arsenic Chromium Lead Molybdenum Selenium <br /> Cadmium Copper Mercury Nickel Zinc <br /> Sampling records shall be retained for a miiumum of five years A log shall be kept of biosolids <br /> quantities generated and of handling and disposal activities The frequency of entries is discretionary, <br /> however, the log should be complete enough to serve as a basis for part of the annual report <br /> 1 Annually by 15 February thereafter, the Discharger shall submit <br /> a Annual biosolids production in dry tons and percent solids <br /> b A schematic diagram showing biosolids handling facilities and a solids flow diagram <br /> c Depth of application and drying time for biosolids drying beds <br /> I <br /> t <br /> l <br />