SITE INFORMATION AND CORRESPONDENCE

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WASTE DISCHARGE REQUIRWTS ORDER NO. • MUSCO FAMILY OLIVE COMPANY AND THE STUDLEY COMPANY 6 WASTEWATER TREATMENT FACILITY SAN JOAQUIN COUNTY portion where the Discharger constructed and then flooded several irrigation checks. The Regional Board has also received several written complaints addressing wastewater that reportedly discharged from the Discharger's property. 29. The Discharger submitted a 28 June 2002 document describing the additional steps it will take to prevent current and future nuisance odors. To eliminate the current odors, Musco pumped out the standing water in checks #2 and#3 in May 2002, has eliminated the water in two of the three ponds built within the intermittent stream, and will "carefully manage"the application of wastewater on its southeastern fields. However, these steps have not been sufficient to prevent the continuing odor complaints. Because the four fields labeled "irrigation checks"are the closest fields to off-site residences, this Order prohibits the application of wastewater to these fields unless the Discharger can prove to the Executive Officer's satisfaction that wastewater application to this land will not cause offsite odors. 30. To prevent future odors, the Discharger has installed an aerator in the 1 million gallon pond (although recent monitoring reports show that the dissolved oxygen levels are still less than 1 mg/1), and recommends that aerators with a capacity of at least 360 horsepower be installed in the 114 million gallon pond. The Discharger also states that wastewater in the pond should always have a dissolved oxygen concentration above 2 mg/l, a dissolved sulfide concentration less than 0.1 mg/1, and a pH between 7.5 and 8.5. Finally, the Discharger recommends that it use a portable sprayer tank mounted on a pickup truck to spray an alkaline chemical on the pond banks and water for rapid odor suppression. These recommendations have been incorporated into this Order. 31. Excess Biochemical Oxygen Demand(BOD) in the wastewater can lead to odor problems. The RWD states that the estimated annual BOD loading rate for the year 2002 will be 291bs/acre/day, which is well below the US EPA's criteria for the prevention of odors. However, a review of the most recent self monitoring report(May 2002) shows BOD loading rates ranging from 46 to 1,870 lbs/ac/day, with an average of 244 lb/ac/day. These values exceed the BOD effluent limitations presented in Section C. The Discharger is expected to take the necessary steps to reduce its BOD to meet the conditions of this Order. OTHER WASTE STREAMS 32. Solid waste generated at the site includes olive pits, stem waste, waste olives, screened solids, steel cans, and cardboard,plastic, paper, and miscellaneous trash. Olive pits and stems are sold as biomass and burned at cogeneration plants or pulverized and incorporated into compost. Waste olives are transported offsite for animal feed or offsite land disposal. Screened solids are transported offsite for land disposal at a landfill. Steel cans, plastic,paper, and miscellaneous trash are hauled by a disposal company to a landfill. 33. The Discharger submitted a Draft Stormwater Pollution Prevention Plan (SWPPP) on 5 June 2002 to address industrial activities at the facility that are exposed to storm water. Stormwater that falls on areas of industrial activity is collected and discharged to the 1-million gallon settling pond. Stormwater that falls on land application areas is collected and pumped to either the 1-million gallon settling pond or the 114-million gallon storage pond. Stormwater that falls on areas of the facility that are not likely to be contaminated is proposed for bypass around the 114-million gallon