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INFORMATION SHEET ORDER NO. R5-2003-0179 VAN RUITEN - TAYLOR RANCH LTD. VAN RUITEN - TAYLOR WINERY LLC SAN JOAQUIN COUNTY Van Ruiten—Taylor Ranch Ltd. operates Van Ruiten—Taylor Winery LLC at 340 West Highway 12, Lodi. The Discharger developed the 200-acre winery and vineyard in 2000. Buildings at the facility consist of a 4,000 square foot winery and a 1,200 square foot tasting room. The winery will process approximately 800 to 900 tons of grapes annually to produce approximately 60,000 cases of wine (approximately 144,000 gallons of wine). Wastewater is generated in tank cleaning, grape crushing,barrel washing, and equipment/floor cleaning. A mobile contract wine bottling service will perform bottling, therefore, bottling activities will not generate a high strength waste stream. Domestic wastewater is discharged to a septic tank and leachfield system. The domestic system is regulated by San Joaquin County Environmental Health Department. Process wastewater treatment consists of collection of wastewater in floor drains, discharge to a settling sump, rotary screening, biological treatment in a bioreactor, pH neutralization, clarification, and land application. Applied wastewater will be mixed with supplemental irrigation water. Sludge from the clarifier will be recirculated to the bioreactor or wasted. The treatment system is anticipated to reduce the concentration of Biochemical Oxygen Demand (BOD) from 10,000 mg/L to 600 mg/L. Combined with the size of the land application area, it is anticipated odors will not be generated by the discharge. Biological treatment is also likely to reduce total nitrogen concentrations and volatile dissolved solids resulting in a lower concentration of TDS discharged to the land application area. The water balance estimates the maximum daily process wastewater flow rate at 3,600 gallons per day (gpd) during the peak grape processing period, with estimated peak daily process flow rates during the off-season of approximately 1,500 gpd. Because the site does not have a wastewater storage pond, there is no means to store wastewater during rain events. The facility has adequate land area to accept wastewater and rainfall (100-year annual return rainfall amounts). Staff estimates the wastewater discharge is less than one-percent of the land application area's available hydraulic capacity. Because adequate land application areas are available, a wastewater storage pond is not required. The Discharger is allowed to discharge wastewater to the land application areas during rain events provided all requirements of the WDRs are complied with. It is anticipated that the cropping activities in the land application area will utilize all the nitrogen applied in the wastewater. Dissolved solids in the wastewater should not cause an increase in the dissolved solids concentration in the underlying groundwater based on the size of the land application area, cropping activities, and use of chemicals that are also plant micronutrients when applied to land. The Discharger has replaced some products (i.e.potassium hydroxide for sodium hydroxide) to maximize the uptake of the dissolved solids by crops. Nevertheless, groundwater monitoring is