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March 26,2003 E Job Number:EG02-031 Page 10 Table 5: Summa of Mass Balance Analysis. Summary _ , 43J v '' .m U au 01 Z . 24.720 155 35 15 *Note:Maximuari contaminate level C or Nitrate is 10 mg/L-N and 45 mglL.as NO,. • r 6.0''t CONCLUSIONS AND gECOMMENDATIONS ; 1n conclusion;a satisf c a ion.rate was. ved on the parcel. The dep'ih to ground water on the site was 30 to 140 feet in 19 -The ground-water quality test indicates hat DBCP was rion-detectable ' ) and nitrate as NO was 2 m L. The result of the nitrate test indlca es e er is above the maximum contaminate level set by•the United States Environmental Protection Agency of 45 mgfL NO,. The nitrate loading an utilizing the Hantzsche and'Finnemore method has shown that the use of a standard type.septic system will result'in a Iow Nc concentration of 1:5 mglL-N (Nc ' equation shown.on Plate 9 . ,We do not believe the use variable in the Hantzsche and q ) of aseptic system at the proposed winery will cause a buildup of nitrates in the ground water ' above 10.mg/L=N,the maximum contaminate limit of nitrate in drinking water. The water quality test however, has indicated,thavground w,ater4fi i be elevated in nitrate: .The duel use (agriculture and domestic) water well should be checked for backflow wash-of vineyard nutrients into the well and/or other plumbing problems which could potentially cause_the high level- 6 f nitrate detected in the water,sample.'We.recommend retesting the.well.water again to this help determine the cause of level: In-the mean time, we recommend the use of.bottled water for.drinking and cooking on the site. - average dais flow from winery customer and'employee use was.determined.to be 155 The g Y -gallons per day. Peak flows will probably occur on.Saturdays or Sundays when weekend ' customers visit the,wine If food service is planned,we recommend adding additional system �- capacity to accept higher flow associated with food service. If showers.or baths, which'may exist Y r