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California Regio nal Water Quality Control Board , <br /> a <br /> Central Valley Region fi <br /> Steven T.Butler,Chair <br /> Winston H. Hickoz Gray Davis <br /> Secretaryjor Sacramento Main Office Governor <br /> Environmental Internet Address: http://www.swrcb.ca.gov/—mgcb5 <br /> Protection 3443_ Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000•FAX(916)255-3015 <br /> 18 December 2000 <br /> Mr. Rick Enos <br /> Delicato Family Vineyards <br /> 12001 South Highway 99 <br /> Manteca, CA 95336-9209 J <br /> INSPE CTION REPOR T, DELICATO FAMIL Y VINE YARDS, WASTEWATER TREATMENT <br /> SYSTEM, MANTECA, SAN JOAQUIN COUNTY <br /> Enclosed is a report summarizing my inspection,performed on 30 November 2000, of Delicato Family <br /> Vineyard winery and wastewater disposal system. In general, the wastewater treatment plant was clean <br /> and well maintained. A site inspection photograph log is enclosed with this letter. The following <br /> observations were made during the site inspection: <br /> • All winery wastewater is discharged.to floor drains. The wastewater is piped to the wastewater <br /> sumps where solids are settled prior to pumping wastewater to the land application areas. <br /> • Stormwater is discharged to the treatment sumps where it is pumped to the land application areas. <br /> • Land application is controlled by manually opening valves to direct the wastewater to portions of <br /> the cropland. Approximately 20 acres of cropland is available as land application area. The land <br /> application area was ripped in 1994. <br /> • Volunteer weeds grow in the application areas. Weeds are occasionally mowed and the cuttings <br /> are left in the field. <br /> • Distribution of the wastewater is by flooding. Wastewater is generally applied for approximately <br /> two weeks at a time. <br /> • Delicato Vineyards operates a regenerative water softener(ion exchange treatment unit) to treat <br /> boiler feed water. The brine from the regenerative water softener is discharged to the treatment <br /> sump. <br /> • Slight odor was noted at the treatment sumps and in the land application areas actively receiving <br /> wastewater. <br /> • No groundwater monitoring wells exist at the land application area. <br /> As discussed during the site inspection, monitoring wells are a standard requirement for wineries <br /> discharging wastewater to land application areas. By 19 February 2001, Delicato shall submit a <br /> groundwater monitoring well installation workplan. The workplan shall be consistent with the attached <br /> document, "Items to be Included in a Groundwater Monitoring Installation Workplan and a Monitoring <br /> Well Installation Report of Results. " <br /> California Environmental Protection Agency <br /> Q*Recycled Paper <br />