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Kd.Et6-�EfkObER <br /> July 23 , 1990 <br /> "El: <br /> mfj"'Eiv '2"" <br /> J U L 3 0 1990 <br /> Patrick D. Riddle _.�;VIRONMENTAL HEALI H <br /> 7574 Shoreline Drive PERMIT/SERVICES <br /> Stockton, CA 95209 <br /> Subject: PERCOLATION TEST <br /> PROPERTY OFF WOODBRIDGE ROAD <br /> SAN JOAQUIN COUNTY, CALIFORNIA <br /> SU-90-14 <br /> Gentlemen: <br /> As requested, on July 16, 1990 a representative of our firm drilled <br /> and set-up 1 3-foot deep percolation test hole at the requested <br /> location. The percolation test hole was hand-drilled and cased <br /> with slotted PVC pipe. The percolation test hole was filled with <br /> water and left to soak overnight. <br /> A representative of our firm returned to the site on July 17 , 1990 <br /> and performed the percolation test per San Joaquin County <br /> guidelines. The test was performed for a period of four hours and <br /> the last 30 minutes were used to calculate the percolation rate of <br /> 12 minutes per inch. The county approved percolation field test <br /> sheet is included with this letter. <br /> We trust this letter presents the information requested at this <br /> time. If you have any questions, please contact us. <br /> Respectfully submitted, <br /> RLEINFELDER, INC. <br /> Steven R. Davis, C.E.G. <br /> Engineering Geologist <br /> /ZD AJ / /�hj LL's <br /> Ron Heinzen, G.E. <br /> Regional Manager <br /> SRD: sfa <br /> July90/cc: San Joaquin County Environmental Health <br /> KLEINFELDER 2825 East Myrtle Street, Stockton, CA 95205 (209) 948-1345 <br />