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K L E I N F E L D E R <br /> An empfOe oanM(nmPanY <br /> File No. 20-3233-01.M 12 <br /> September 16, 1999 <br /> Mr. Vern Vierra <br /> Delta Building Design <br /> 151 W. Tadd 95220- RECEIVED <br /> EG I`v ED <br /> Road <br /> Acampo,CA 95220-4654 <br /> Subject: PERCOLATION TESTING SEP 2 91999 <br /> RALPH'S STATUARY <br /> 3602 EAST MUNFORD AVENUE ENVIRONMIEN THS HEALTH <br /> SAN JOAQUIN COUNTY,CALIFORNIA PF_RMIT / SERVICES <br /> Dear Mr. Vierra: <br /> As requested, on September 13, 1999, personnel of our firm drilled and setup two percolation tests at <br /> Ralph's Statuary located at 3602 East Munford Avenue in Stockton, California. The percolation test <br /> holes were extended to depths of approximately 3% and 9'/z feet below existing ground surface using a <br /> truck-mounted drill rig equipped with 6-inch diameter, continuous-flight augers. A small amount of <br /> gravel was placed in the bottom of each test hole, the holes were cased with slotted PVC pipe, and the <br /> holes were partially filled with relatively-clean water and left to soak overnight. <br /> On September 14, 1999, our personnel returned to the site to perform the percolation tests per San <br /> Joaquin County guidelines. The tests were monitored for approximately four hours, and the last 30 <br /> minutes of each test were used to calculate the percolation rated presented below. The County-approved <br /> percolation field test sheet is included with this letter. <br /> Test Number Depth (Feet) Percolation Rate,Minutes Per Inch <br /> P_I 3 y_ 120 <br /> P-2 91/2 30 <br /> We trust this report presents the information required at this time. If you have any questions or require <br /> additional information, please contact us. <br /> Respectfully submitted, <br /> KLEIN R& <br /> Ron Heinzen,G.E. <br /> Regional Manager/Senior Principal <br /> RTH:md <br /> Attachments <br /> 20-3233-OI.M 12/2019R780 Page I of 1 <br /> Copyright 1999- Kleinfelder. Inc. September 16, 1999 <br /> KLEINFELDER 2825 East Myrtle Street, Stockton,CA 95205-4794 (209)948-1345 (209)948-0621 fax <br />