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# RECEIVLp SES' I a 1995 D E RSO NEIL 0. 7ERSON & ASSOC., INC. GEOTECHNICAL SERVICES-ENGINEERING LABORATORIES Houston n Lodi, California 95240 n tA Lodi (209) 367-3701 o Stockton (209) 472-1091 p FAX: (209) 333-8303 �SSOG� September 17, 1996 Frank Lucchesi P.O. Box 443 323 W. Elm St. Lodi, CA 95258 Subject: Deep Pit Percolation Tests Scofield Property 23381 N. Bender Rd. Acampo, California Our Job #: S9674 MS 96-4 Gentlemen: Per your request we have completed performing a deep pit percolation test at the subject project. This letter and attachments presents the results of our test. The test hole was excavated with a truck mounted drill rig utilizing 4.5 inch diameter continuous flight auger. For approximate location of the test hole (PT) see the attached test data sheet. The test hole was logged by an engineer and a description of the soils encountered is presented on the attached Log of Test Hole. Generally, a low permeable cemented clay stratum was encountered from 3 to 4 feet with a very permeable sand stratum encountered from 11.0 to 14.0 feet. For a detailed description of the soils encountered see the test hole log. A deep pit percolation tests was performed in the test hole. The test was performed within the sand stratum. Two inches of gravel was placed in the bottom of the 4.5 inch diameter hole. A 2.5 inch diameter perforated pipe was then placed in the hole and backfilled with gravel. The test hole was filled with water 24 hours prior to running the test. A county health official witnessed the performance of the test. A copy of the test data obtained is attached. The percolation rate has been adjusted to account for the gravel and pipe backfill. Calculations for the adjustment are on the test data sheet. A summary of the test results is presented next: Diameter of Depth of Test No. Hole in. Hole ft. Percolation Rate (min/in) PT-1 4.5 14.0 0.06 EXIT