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�• r INFORMATION SHEET SEBASTIANI VINEYARDS, INC ORDER NO. 99-103 SAN JOAQUIN COUNTY Sebastiani Vineyards, Inc. (Sebastiani) operates a winery at 4614 West Turner Road, west of Lodi in San Joaquin County, under Waste Discharge Requirements (WDRs) Order No. 94-055. This facility is known as Turner Road Vintners East (TRV East). Increases in wine production have necessitated that Sebastiani construct a new winery and wastewater treatment/disposal system on the 63 acre parcel where checks were formerly used for winery wastewater disposal. This new facility is known as Turner Road Vintners West (TRV West), and is approximately 2/3 mile west of the TRV East facility at 5852 West Turner Road. Sebastiani plans to increase production levels from a current rate of approximately 30,000 annual ton crush to a maximum rate of 100,000 tons annual crush (corresponding to approximately 650,000 gallons per day of wastewater). WDRs Order No. 94-055 are inadequate to regulate the increased wastewater flows. In order to accommodate these increased flows, Sebastiani installed a biological treatment facility using an Advanced Integrated Pond System (AIDS) and constructed wetlands on 42 acres of the TRV West site. Wastewater from TRV East is pumped through a pipeline along the southern edge of Turner Road to the TRV West facility. After treatment in the AIPS and constructed wetlands, water is discharged to a storage lake where it can be used for landscape irrigation. The AIDS consists of four aerobic/anerobic ponds that provide_primary and secondary treatment of the wastewater. Wastes are injected into the deep anerobic portion of the pond which is covered by an aerobic zone where the wastewater is oxygenated using aerators. Biological solids generated during aerobic treatment settle and decompose in the anerobic zone. Tertiary treatment of the wastewater is conducted in the constructed wetlands. Wastewater drains into and through a series of wetlands and ponds, which were designed, installed and vegetated to promote mixing of the wastewater and to provide an adequate energy source for microbial treatment by marsh bacteria. The biological treatment using the AIPS and constructed wetlands is expected to reduce the Biochemical Oxygen Demand concentration from an annual average of approximately 1600 milligrams per liter(mg/1) to 36 mg/l. Suspended Solids are expected to be reduced from an annual average concentration of approximately 40 mg/1 to 12 mg/1. The AIPS and constructed wetlands should reduce these concentrations by an average annual rate of about 97 percent. An 8-acre storage lake is immediately west of the constructed wetlands and is used for flow equalization and flood detention. Excess water from the constructed wetland will be reclaimed for landscape irrigation. Stormwater at the TRV West and TRV East facilities is separated from the process wastewater using designed collection/diversion sumps. Stormwater at TRV West is either discharged to the Woodbridge Irrigation District's Villinger Lateral Canal or to the AIDS. Stormwater at TRV East is pumped to the stormwater pond at the southern end of the facility. 28 July 1999 CKW:lm