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GEOTECHNICAL <br /> NEIL O. ANDERSON ENVIRONMENTAL <br /> A N D A $ S U C I A T E $ INSPECTIONS & TESTING <br /> LABORATORY SERVICES <br /> POOL ENGINEERING <br /> POST TENSION DESIGN <br /> January 26, 2009 <br /> NOA Project Number: E07202B <br /> Michael Escotto MD �(���vEU <br /> San Joaquin County Environmental Health Department lJ u <br /> 600 East Main Street ,AN 2 7 2009 <br /> Stockton, CA 9521.2 <br /> ENVIRUNMEI'!' !HEALTH <br /> Re: Well Water Sample Constituents PERMIT/SERVICES <br /> Thelma E. Hieb Revocable Trust Property <br /> 10940 East Harney Lane <br /> Lodi, California <br /> Dear Mike, <br /> The following discussion concerns groundwater depth and gradient in the vicinity of the subject <br /> property along with the water sample constituent results from the well tested at the address 10940 <br /> East Harney Lane in Lodi, California. The well water sample was taken from a spigot on site by Mr. <br /> Jessen Welch of our office on December 12, 2007. <br /> Ground Water Depth and Gradient <br /> The San Joaquin County Flood Control and Water Conservation District (2003 and 2004) <br /> groundwater elevation maps were reviewed to determine the groundwater levels near the Site. <br /> The Fall 2003 and Spring 2004 maps are the most current official maps available from the County. <br /> According to these maps, (Plates 3 and 4), groundwater elevation lies between 20 and 40 feet <br /> below mean sea level. The elevation of the land, as previously mentioned in Section 1.1 of the <br /> SSS, ranges between approximately 65 and 75 feet above mean sea level. Therefore, the depth to <br /> groundwater (the difference between the elevation of the Site and the elevation of groundwater), <br /> ranges between approximately 85 and 115 feet below the ground surface. The groundwater in the <br /> vicinity of the Site appears to flow to the northeast. <br /> A percolation test boring was drilled to a depth of approximately 25 feet on December 18, 2007. <br /> No groundwater was encountered. <br /> ANGELS CAMP • LODI • MODESTO - RENO • SACRAMENTO • WALNUT CREEK <br /> LODI 902 Industrial Way • Lodi,CA 95240 - 209.367.3701 - FAX 209-369.4228 - wxm%noandersonxom <br />