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WASTE DISCHARGE REQUIREMENTS ORDER R5-2012-0103 - 14 - <br />CONSTELLATION BRANDS U.S. OPERATIONS, INC. dba WOODBRIDGE WINERY <br />WOODBRIDGE WINERY <br />SAN JOAQUIN COUNTY <br /> <br />39. Shallow soils consist of mixtures of sand, silt and clay. <br />40. Based on the California Department of Water Resources rainfall data, the mean <br />annual rainfall is approximately 15.2 inches and the 100-year return annual <br />precipitation is 31.9 inches. Evapotranspiration was estimated from a nearby <br />California Irrigation Management Information System monitoring station at 53.4 inches <br />per year. <br />41. Domestic wastewater generated at the winery is discharged to a septic system <br />regulated by the San Joaquin County Environmental Health Department. Sludge <br />produced in the treatment system is regularly pumped and disposed of off-site at a <br />domestic wastewater treatment facility. Septic tank effluent is discharged to a 17,280 <br />square foot leach field. An identically sized replacement area is permanently reserved <br />if needed in the future. <br />42. The primary process water supply is obtained from groundwater production wells. <br />Two wells (PW -1 and PW-4) produce all the facility process water under normal <br />conditions. Well PW -4 currently produces approximately five times the amount of <br />water produced by PW-1. The amount of water produced from the wells since 2003 is <br />presented below: <br /> <br /> <br /> <br />43. Water samples were collected from the supply wells (PW), irrigation wells (IW), and <br />water distribution system. A summary of the average results is presented below: <br />Well/ <br />Source <br />Average Result (mg/L, except as noted) <br />TDS Nitrate-N EC1 Sodium Chloride Sulfate <br />PW -1 184 0.8 240 13 6.1 4.2 <br />PW -2 413 0.9 691 33 28 9.1 <br />PW -3 266 0.9 386 19 13 6.4 <br />PW -4 135 0.8 166 11 3.7 4.7 <br />IW -1 345 3.8 496 30 25 17 <br />IW -2 250 1.5 337 16 9.5 5.0 <br />IW -3 433 4.3 634 26 18 45 <br />Year Units PW-1 PW-4 Total <br />2003 Mgal/year 3.96 82.9 86.86 <br />2004 Mgal/year 3.11 89.2 92.31 <br />2005 Mgal/year 5.95 87.3 93.25 <br />2006 Mgal/year 6.41 80.28 86.69 <br />2007 Mgal/year 4.33 57.96 62.29 <br />2008 Mgal/year 13.90 55.81 69.71 <br />2009 Mgal/year 11.00 54.93 65.93