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L <br /> L May 17, 2005 <br /> NOA Project Number: E04146B <br /> L V13.6 Septic Repair Permit History in the Vicinity <br /> No septic system repair permits were found for the vicinity of the Site during file review at EHD on <br /> /May 3,2005. <br /> L !�3.7 Expected On-Site Maximum Septic Tank Usage <br /> L Maximum expected usage on each proposed parcel would be for a primary residence and second <br /> L dwelling unit. Septic system design should be based on the On-Site Wastewater Disposal Standards or <br /> other engineering recommendations. <br /> L 4.0 GROUND WATER INFORMATION <br /> �41 Ground Water Depth and Gradient <br /> LThe San Joaquin County Flood Control and Water Conservation District (1998 and 1999) ground <br /> water depth and elevation maps were reviewed to determine the ground water levels near the Site. <br /> LThe Fall 1998 and Spring 1999 maps are the most current official maps available from the County. <br /> These maps do not cover the vicinity of th ite because ground water is less than ten feet below the <br /> ground surface in that area. <br /> L <br /> �d water was encountered at a depth ;6' - ff of Neil 0.Anderson&Assoeta�gs, <br /> L Inc. during the drilling of one groundwater boring 2005. The location of this boring is <br /> /indicated on Plate 1. <br /> V 4.2 Potential Ground Water Contamination Issues <br /> L Identification of potential ground-water contamination sources was not part of the scope of work <br /> for the soil suitability study. Potential ground-water contamination can occur from a number of <br /> sources which often include leaky underground storage tanks, agricultural activities,dairies, septic <br /> systems,and storm water infiltration. Agricultural activities and the use of septic systems in the area <br /> should be considered potential ground-water contamination sources. No additional sources of <br /> ground-water contamination were identified by the Surface/Subsurface Contamination Report(Neil <br /> O.Anderson&Associates,2005). <br /> //4.3 Water Sample Location <br /> 6. <br /> One well exists on the site. No well permits were found during file review at EHD on May 3,2005. <br /> A water sample was collected from a faucet at the rear of the house f the domestic well by Mr. <br /> Conor McGee of our office on May 2, 2005. <br /> L <br /> 4 <br /> L '004 <br /> 1 <br /> L <br />