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0 0 <br /> California Regional Water Quality Control Board <br /> Central Valley Region <br /> M i)� <br /> Winston H.Hickox Robert Schneider,Chair <br /> Secretary for Fresno Branch Office Gray Davis <br /> Environmental Governor <br /> Protection Internet Address: httpl/www.swrcb.ca.gov/—rwgcb5 <br /> 1685 E Street,Fresno,California 93706-2020 <br /> Phone(559)445-5116•FAX(559)445-5910 D <br /> 8 May 2003 MAY 12 2003 <br /> ENV;F%IMENI HEALTH <br /> Mr. Ben Hall I 1'111T/SERVICES <br /> Mr. Nick Musco <br /> Musco Family Olive Company Studley Company <br /> 17950 Via Nicolo 17950 Via Nicolo <br /> Tracy, CA 95376 Tracy, CA 95376 <br /> REPORT OF STORM WATER BYPASS CRITERIA, MUSCO FAMILY OLIVE COMPANY, <br /> SAN JOAQUIN COUNTY <br /> We reviewed the technical submittal,Report of Storm Water By-Pass Criteria Revised per January 28 <br /> 2003 Comments by the Regional Board, Revised per 28 January 2003 (Report) dated 11 February 2003. <br /> The Report was prepared and certified by Mr. Rich Stratton (RCE No. 37261) of HDR Engineering for <br /> the Musco Family Olive Company(Discharger or Musco). Provision G.2 (c) of Waste Discharge <br /> Requirements Order No. R5-2002-0148 requires Musco to submit a technical report that describes <br /> specific numerical water quality criteria to determine if bypassing storm water originating from the <br /> natural drainage upgradient of Musco property and from land application areas around the 84-million <br /> gallon storage pond is protective of water quality. Musco may not bypass storm water consistent with <br /> the release criteria around the 84-million gallon storage pond until the Regional Board's Executive <br /> Officer approves the Report. <br /> Regional Board letter dated 28 January 2003 determined an earlier version of the Report was incomplete <br /> and requested Musco to clarify the storm water sampling locations. The Report describes seven storm <br /> water sampling points, but its Figure 1 does not identify the Evaporation Sump sampling point. <br /> The Report proposes to bypass storm water that has a pH between 6.5 and 8.5, meets specific release <br /> criteria for turbidity, and does not exceed one percent of the background concentrations for: 5-day <br /> biochemical oxygen demand, chemical oxygen demand, electrical conductivity, total dissolved solids, <br /> total Kjeldahl nitrogen, ammonia, nitrate, and dissolved ortho-phosphate. The Report proposes to <br /> characterize background concentrations from samples of storm water obtained at the furthest upstream <br /> sampling location, SW-1. <br /> The facility's wastewater contains high concentrations of chloride and sodium and appears to be <br /> occasionally characterized by a dark color(from olive processing). Release criteria should include <br /> chloride and sodium in addition to the constituents recommended in the Report. Also, the storm water <br /> samples should be analyzed for color with the selected method specified. <br /> California Environmental Protection Agency <br /> CO Recycled Paper <br /> The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. For a list of simple ways <br /> you can reduce demand and cut your energy costs,see our Web-site at http.,//www,swrcb.ca.gov/mgcb5 <br />