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November 19, 2004 <br /> NOA Project Number: E04107A <br /> The two replacements/repairs of 3776 West Grant Line Road are the property next door. The <br /> permit for 3722 W 11th Street is for the replacement of the tank. The permit for 4835 W. 11th Street <br /> does not specify the repair or addition. The permit shows a diagram of a tank so it may be a tank <br /> F1repalcement. <br /> 3.7 Expected On-Site Maximum Septic Tank Usage <br /> a um expected usage would be for a 7,300 square foot custom manufacturing sign shop and <br /> 2,500s uare foot mobile home. The mobile home will h� a�veer,hedroja=.We assume that three <br /> eo will live there over the long term. The manufacturing sign shop will have 4 workers that <br /> work from 8 am to 5 pm,Monday through Friday. 1t is also expected that 4 custQxaae _ffl-i i� t the <br /> _shop a day,but it is likely that only qne per �aU*Alsf.th esti'oom. Septic system design <br /> should be based on the On-Site lllasteAvater Di.posal Standards or other recommendations. These <br /> assumptions are further discussed in Part II Section 3 of the Nitrate Loading Study <br /> F1 4.0 GROUND WATER INFORMATION <br /> F1 4.1 Ground Water Depth.and Gradient <br /> The 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 /> PThe Fall 1998 and Spring 1999 maps are the most current maps available from the county. <br /> # + m Examination of these maps indicates that no water level data is available for the Tracy/Banta area, <br /> which includes the Site, and no comments as to depth or gradient flow direction can be made. <br /> On October 18, 2004, a ground water boring excavated by our office encountered groundwater at a <br /> depth of 8.5 feet.A sample was taken and analyzed for nitrate and DBCP content, <br /> 4.2 On Site Well Permit History <br /> elle,; u was found during file review at EHD on October 4, 2004. This permit,dated April <br /> 21, 2004,is for the installation of a new well. The well is intended for domestic/private use and is a <br /> depth of 170 feet. <br /> L1 <br /> P. <br /> 4 <br /> Fill <br />