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WASTE DISCHARGE REQUIREMENTS ORDER R5-2013-0028 -3- <br /> DELICATO VINEYARDS, INC. <br /> DELICATO FAMILY VINEYARDS <br /> SAN JOAQUIN COUNTY <br /> 12. On 19 March 2010, the Discharger submitted a RWD that included data from the <br /> newly installed monitoring wells, described a planned expansion of winery <br /> operations and an increase in acreage of LAAs for the discharge of wastewater. <br /> In response to comments, an amended RWD was submitted on 29 February 2012, <br /> with additional supporting information provided in October and November 2012. <br /> The 2012 RWD proposes both structural and operational improvements to reduce <br /> current degradation and mitigate the threat of degradation associated with <br /> expanded winery operations. <br /> Existing Facility and Discharge <br /> 13. The facility currently crushes approximately 140,000 tons of grapes annually. <br /> Wastewater at the facility is generated from wine processing, tank and floor <br /> cleaning, and equipment maintenance activities (e.g. water softening regeneration, <br /> cooling tower and boiler blowdown). <br /> 14. The winery operates year-round, with maximum wastewater discharge occurring <br /> during the crush season of September through November. Since 2002, the facility <br /> has produced an average annual wastewater flow of approximately 0.132 MGD <br /> (48.1 MGY), with a peak annual flow of 0.16 MGD (58.5 MGY) in 2006. <br /> 15. Process water for facility operations is supplied by two on-site wells (Well #2 and <br /> Well #4), that are used for both domestic and winery processes. Well #4 is the <br /> primary facility supply well, while Well #2 functions as a backup well. The amount <br /> of water produced from the two supply wells since 2009 is presented below: <br /> Year Total Flow(MGY) <br /> 2009 51.1(a) <br /> 2010 56.3 <br /> 2011 70.7 <br /> (a) Reported value is low due to mis-calibrated meter. <br /> 16. Water samples were collected from the two on-site supply wells and one <br /> agricultural well in December 2009. A summary of selected analytical results from <br /> the on-site supply wells is presented below: <br /> Constituent Analytical Result(mg/L, except as noted) <br /> Well #2 Well#4 <br /> Total Hardness 47.3 61.4 <br /> Boron 0.3 0.2 <br /> Iron 0.17 <0.05 <br /> Sodium 58 57 <br /> pH 8.1 8.1 <br />