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L L i` L L L 6. '.44NEIL O. ANDERSON A N D A S S O C I A T E S February 3, 2006 NOA Project Number:E05171A Kirk Aguer, Property Owner C/O Dillon and Murphy Consulting Civil Engineers 720 Atherton Street State College, PA 16801 Subject: Percolation Tests for Septic System Disposal Fields 14880 East Jahant Road Acampo, CA 95220 Dear Mr. Aguer, GEOTECHNICAL ENVIRONMENTAL INSPECTIONS t TESTING LABORATORY SERVICES POOL ENGINEERING POST TENSION DESIGN Per your request, our office has completed three (3) deep and three (3) shallow percolation tests on the subject property which is located at 14880 East Jahant Road, Acampo, California. The property size is 140.8 acres in size and is presently agricultural land. Mr. Louis Mendez of Dillon and Murphy Engineers requested that our office conduct percolation tests to satisfy a requirement of the Environmental Health Department for siting a new residential septic system. The percolation test hole locations are indicated on the attached site map. The percolation test hole for Parcel 1 was located 700 feet to the south of East Jahant Road and 50 feet to the west of the proposed eastern property boundary line. The percolation test hole for Parcel l was located 300 feet south of the proposed northern property line and 700 feet to the east of the proposed western property boundary. The percolation test hole for Parcel 3 was located 420 feet to the east of the proposed western property line and 1301 feet to the south of the Jahant Road. The drilling of three, twenty-five (25) foot and three, three (3) foot deep percolation test borings was conducted on January 26, 2006 using an all terrain vehicle -mounted deep rock drilling rig with an 8 -inch diameter auger. The soils in the boring on Parcel 1 were found to be reddish brown to brown moist clayey sand to a depth of approximately 17 feet, followed by a flowing silty sand to a depth of 25 feet. The soils in the boring on Parcel 2 were found to be reddish brown to brown silty sand to a depth of 14 feet, followed by a sandy clay to a depth of 25 feet. The twenty-five (25) foot percolation test hole for Parcel 3 was re -drilled on February 1, 2006. The drilling of one, twenty-five (25) foot percolation test boring was conducted on February 1, LODI ■ SACRAMENTO ■ MODESTO ENVIRONMENTAL DIVISION 902 Industrial Way, Lodi, California 95240 ■ 209.367.3701 ■ 209.3624228 fax ■ w .noandersmxom L 1/