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CITY OF TRACY,,,, Utilities Division 3900 Holly Drive Telephone: (209)836-1650 21 39 00RP01% Tracy, CA 95376 Fax: (209)836-0932 Sept. 12, 1996 State of California Regional Water Quality Control Board Central Valley Region 3443 Routier Road, Suite A Sacramento, Ca. 95827-3098 Attention: Mike Mosbacher Subject: 1995-1996 Sludge Post-Application Report and Annual Sludge Land Application Report The Waste Discharge Requirements issued to the City of Tracy require that a post application report be submitted to your office at the end of each sludge application cycle. It also requires an annual report to be submitted by August 30th of each year. The enclosed report should satisfy both of these requirements. A review of the enclosed data shows that: 1. Table I shows results of analyses on our dried sludge for total metals and nutrients. All data for the metals met the EPA 503 criteria. Nutrient results were used to plan and document agronomic loadings to the fields. 2. Table 2 shows STLC(distilled water) values for the EPA 503 metals in the dried sludge. 2. Table 3 shows analyses on dried sludge for the EPA 503 pathogens. All results met the criteria,for a Class A sludge. 3. Table 4 shows analyses and inventory results for the sludge applied in Fall of 1995. Average values from the data were used for the concentrations in pure sludge used. These values are used to determine agronomic rates, annual and cumulative loadings of metals, etc. 4. Table 5 shows actual applications of sludge to the Fields IA, 3A, 313, 5, 6, 7A and 7B. 5. Table 6 shows total plant nutrient additions to each field. The supplemental fertilizer added to Field # 5 was applied on the approx. 30 acres that did not receive sludge in the fall. This area was part of the buffer area next to the domestic well. Approximately 20 1