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4��T Rot �� <br /> 4. �'� ualityConroltnspection Inc. <br /> a QUI . <br /> 7 O MAIN OFFICE <br /> 0 1295 NORTH EMERALD,BLDG.O•MODESTO,CALIFORNIA 95351 •PHONE:(209)527-4940 <br /> BRANCHES <br /> STOCKTON(209)466-8378 MERCED(209)723-2425 <br /> QCI# G-92-761 April 22 , 1992 <br /> FOR: R. & A. Hendershott <br /> 28100 South Highway 33 <br /> Tracy, CA 95376 <br /> PROJECT: Minor Subdivision Application No. MS-92-14 <br /> SUBJECT: Percolation Testing <br /> On April 8 , 1992 representatives of Quality Control Inspection, <br /> Inc. prepared percolation test borings using a truck mounted B40H <br /> Mobile Drill Rig at locations selected by our field personnel. <br /> These locations were determined based upon site surveys by the <br /> Engineer of Record, Mr. Earnest Smith, P.E. The percolation <br /> testing was conducted in accordance with San Joaquin County's <br /> Percolation Test Procedures. <br /> Three percolation test borings were drilled using an eight-inch <br /> O.D. solid stem auger to depths of approximately 42 inches for the <br /> shallow test hole, a 7 foot 6 inch test hole, and a 12 feet 2 inch <br /> for the deep test boring. Test hole sidewalls were scarified and <br /> sleeved with four-inch O.D. perforated pipe to prevent cave-ins and <br /> insure test hole integrity. Gravel was added to the hole bottom <br /> and placed in the annular space between the perforated pipe and the <br /> bore hole. The test borings were pre-saturated 24 hrs before <br /> percolation testing commenced on April 15, 1992 . <br /> An exploratory test hole was drilled to a depth of 20 feet and is <br /> provided in the Appendix of this report as the Log of Boring. <br /> Please find attached the "Field Percolation Testing Report" that <br /> is signed by the San Joaquin County Registered Sanitarian and <br /> includes test boring locations, percolation rates and recommended <br /> sewage disposal area. <br /> Respectfully submitted, <br /> 17 TY CONTROL INSPECTION, INC.LAA-1 <br /> Jess Wry, P.E. <br /> Our reports and letters are submitted as the confidential property of our clients for their exclusive use.Any publication or reproduction of statements,conclusions or extracts from or <br /> regarding our reports or letters is reserved,contingent upon the written authorization of Quality Control Inspection,Inc. <br />