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I. California Regional Waterualit�y Control Board / �� NfAi. hiEALlft Central Valley � ��k� rJr FRVICE Robert Schneider,Chair Winston H.Hickox Gray Davis Secretaryfor Fresno Branch OffQ9 JUL I ZI P 11 a 0 1 Governor Environmental Internet Address: http://www.swmb.ca.gov/—mgcb5 Protection 1685 E Street,Fresno,California 93706-2020 Phone(559)445-5116•FAX(559)445-5910 8 July 2003 Mr. Ben Hall Mr. Nick Musco Musco Family Olive Company Studley Company 17950 Via Nicolo 17950 Via Nicolo Tracy, CA 95376 Tracy, CA 95376 SALINITY SOURCE REDUCTION REPORT,MUSCO FAMILY OLIVE COMPANY, SAN JOAQUIN COUNTY We reviewed the technical report, Salinity Source Reduction Report (Report), dated 31 March 2003 and prepared by Mr. Joseph Drago of Kennedy/Jenks Consultants for Musco Family Olive Company (Discharger or Musco) in fulfillment of Provision G.2.d of Waste Discharge Requirements (WDRs) Order No. R5-2002-0148. The Report documents Musco's existing salinity source reduction program and evaluates alternatives to further reduce salinity constituents in wastewater generated by Musco's olive processing facility near Tracy. The Report was accompanied by a 31 March 2003 letter from Mr. Michael A. Campos of Stoel Rives, LLP. By letter dated 9 April 2003, Mr. Ben Hall of Musco certified the Report in accordance with General Reporting Requirement B.3 of Standard Provisions and Reporting Requirements, which are incorporated in the WDRs by reference. Effluent Salinity Limitations and Compliance Schedule. Order No. R5-2002-0148, Effluent Limitation C.1, establishes the following maximum concentrations of salinity constituents in wastewater discharged to the 1-million gallon settling pond: total dissolved solids (TDS) (2,047 mg/L), sodium (597 mg/L), and chloride (601 mg/L). These salinity effluent limitations were based on limited data and were intended to be protective of groundwater quality while multiple problems at this facility were addressed and better data collected. Cleanup and Abatement Order No. R5-2002-0149 establishes, in part, a 6 September 2002 deadline to reduce TDS to 4,7/00 mg/L and sodium to 739 mg/L; a 6 September 2003 deadline to reduce TDS to 3,373 mg/L and sodium to 668 mg/L; and a 6 September 2004 deadline to achieve full compliance with Effluent Limitation C.1. Report Review. The Report provides an overview of Musco's current discharge. Concentrated waste is discharged to evaporation ponds and less concentrated waste is discharged to a 1-million gallon settling pond prior to discharge to land at agronomic rates. Waste discharged to the evaporation ponds includes: softener regeneration, boiler blowdown, flotation brine, and brine leakage from olives on the conveyor belts. Waste discharged to the 1-million gallon settling pond includes: influent water filter backwash, used flume water during the harvesting season, spent storage solution, three lye rinses, carbon dioxide rinses, spent ferrous gluconate solution, transport water, pitter start tank water, accumulation tank water, any water reaching the pitter/accumulation tank area floor drain, wash water reaching the cannery area California Environmental Protection Agency CO Recycled Paper The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. For a list of simple ways you can reduce demand and cut your energy costs,see our Web-site at http://www.swrcb.ca.gov/mgcb5