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NEIL O. ANbERSON & ASSOCIATES, INC. U,OA. FRs GEOTECHNICAL•ENVIRONMENTAL•GROUNDWATER•INSPECTIONS•TESTING•LABORATORY SERVICES CORPORATE OFFICE SACRAMENTO OFFICE 22 Houston Lane 4221 Northgate Boulevard,Suite 6 CHICO (530)891-6304 Lodi,California 95240 Sacramento,California 95834 STOCKTON (209)472-1091 (209)367-3701 (916)929-9267 RANCHO CORDOVA (916)631-4455 FAX(209)333-8303 FAX (916)929-9269 August 14, 2002 Our Project No. LG02-324 Mr. Rodney Schatz 18247 Tretheway Road Lockeford, CA 95237 Subject: Percolation Test, APN 017-150-02 6200 E. Peltier Road, Acampo, CA Dear Mr. Schatz, Per your request, our office has completed three (3)percolation tests on the subject property. The percolation tests were performed in accordance with the method prescribed by the San Joaquin County, Public Health Services, Environmental Health Division. Attached are the percolation test forms and a copy of the permit. The drilling and percolation test was conducted on a Assessor Parcel Number 017-150- 02. Three (3) shallow soil borings were excavated on Thursday, August 8, 2002. The pre- saturation was performed on Monday, August 12, 2002 and the percolation tests was performed on Tuesday, August 13, 2002. This work was performed in an effort to establish the percolation rate of the soils within an area of the property that could potentially be used for a septic system. All three percolation test holes were excavated to a depth of 3 feet using a post hole digger. The soils were found to be a light brown silty sand. No ground water was encountered. All three (3) of the percolation test borings were completed into shallow percolation test holes. Within the boring, an inch of"pea gravel"was placed in the bottom of the hole to stabilize the side wall from caving and prevent erosion while filling the boring. A 2-inch diameter PVC pipe with open ends and slots was placed in the hole. About 6-inches of pea gravel was placed in the annular space around the pipe. The hole was pre-soaked 24 hours prior to the test with 12 inches of water above the bottom of the hole. During the percolation test, the fall of 6 inches of water was measured above the top of gravel during the 1-hour test period in all three holes. Measurements were made every 10 minutes for a 1-hour period. Mr. Johnny Yoakum, San Joaquin County, Public Health Services, Environmental Health Division, observed the last '/2 hour of the test. The following table summaries the results of the percolation test: V