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k" KLEINFELDER An employee owned company n: File No. 20-4322-01.G01 October 12, 1999 Mr. George TeVelde 2107 Ladd Road Modesto, CA 95356 Subject: REPORT OF PERCOLATION TESTING 26250 CARTER ROAD ESCALON, CALIFORNIA Dear Mr. TeVelde: As requested, on October 6, 1999,personnel of our firm drilled one soil profile boring and set-up two percolation test holes on the subject project site. The boring and percolation tests were performed at locations shown to us in the field by the owner, and the approximate locations are indicated on Plate A-1 included with this report. Our services were provided as outlined in our proposal dated September 16, 1999 and with your written authorization of September 17, 1999. The boring and percolation test holes were drilled with a truck-mounted drill rig equipped with 6-inch diameter, continuous-flight augers. The soil profile boring was drilled to a depth of approximately 15 feet, and the test holes were drilled to depths of approximately 3 and 51/2 feet below existing ground surface. A log of the soils encountered in the boring is included as Plate A-4. The soils were classified according to the Unified Soil Classification System which is described on Plate A-2; a key to the Log of Boring is presented on Plate A-3. A small amount of gravel was placed in the bottom of each test hole, the test holes were cased with slotted PVC pipe, and the test holes were partially filled with relatively-clean water and left to soak overnight. As indicated on the Log of Boring, clay soils were encountered to a depth of approximately 6 feet where sandy soils were encountered and extended to the maximum depth explored of approximately 15 feet. We note that the soils encountered in the percolation test holes varied in that the sandy soils were encountered closer to the surface. Sandy soils were encountered in test holes P-1 and P-2 at depths of approximately 2%2 and 41/2, respectively. On October 7, 1999, a representative of our firm returned to the site to perform the percolation tests per San Joaquin County guidelines. The tests were performed for four hours, and the last thirty minutes of each test were used to calculate the percolation rates indicated in the following table. The County approved percolation field test sheet is included with this report. 204322-O1.G01/2019R917 October 12, 1999 © 1999 Kleinfelder,Inc. Page 1 of 2 KLEINFELDER 2825 East Myrtle Street,Stockton,CA 95205-4794 (209)948-1345 (209)948-0621 fax