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Watts Winery Page 3 of 14 Our Project Number: LGS090507 May 11, 2009 each building cluster has one septic system. Using this method, we determined that there are a minimum of 100 septic systems per square mile in the immediate vicinity of the Site. r The general area consists of vineyard and orchard farming with mixed urban residential housing. 1.3.5 Septic Permit History in the Vicinity Based on a recent file review at EHD, the septic systems in the area appear to utilize leach lines and seepage pits. The septic permits can be found in the back of this report. r 1.3.6 Seotic Repair Permit History in the Vicinity Based on a recent file review at the EHD, the septic repairs in the vicinity appear to be for the addition of leach lines. The septic repair permits can be found in the back of this report. 1.3.7 Expected On-Site Maximum Septic Tank Usage Maximum expected usage on each proposed parcel would be for a primary residence and second dwelling unit. Septic system design should be based on the On-Site Wastewater Disposal Standards or other engineering recommendations. 1.4 Ground Water Information 1.4.1 Ground Water Depth and Gradient The San Joaquin County Flood Control and Water Conservation District (2003 and 2004) ground water elevation maps were reviewed to determine the ground water levels near the Site. The Fall 2003 and Spring 2004 maps are the most current official maps available from the County. _ According to these maps (Plates 3 and 4), ground water lies between 90 and 100 feet below ground surface and flows to the southeast in the vicinity of the Site. No ground water was encountered by the staff of Neil 0. Anderson & Associates, Inc. during the drilling to a depth of 9 feet on March 23, 2009. 1.4.2 Potential Ground Water Contamination Issues Identifying potential ground-water contamination sources was not part of the scope of work for the soil suitability study. Potential ground-water contamination can occur from a number of sources which often include leaky underground storage tanks, agricultural activities, dairies, septic systems, and storm water infiltration. 1.4.3 Water Sample Location One domestic well and one agricultural well exist at the site. One permit was found during a recent file review at EHD. 902 Industrial Way•Lodi,CA 95240•209.367.3701 •Fax 209.369.4228 02009 Neil 0.Anderson&Associates,Inc