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ualityont�ro2 y nspectzon nc. a <br /> Q o~ O MAIN OFFICE <br /> Q ❑ 1295 NORTH EMERALD,BLDG.G�MODESTO,CALIFORNIA 95351 •PHONE:(209)527-4940 <br /> BRANCHES <br /> STOGKTON(209)466-9379 •• MERCED(209)723.2425 <br /> lis <br /> QCI#: G-92-755 June 1, 1992 } <br /> FOR: Ms. Barbara Larsen s _ <br /> P.O. Box 174 <br /> Manteca, CA 95336 <br /> PROJECT: Minor' Subdivision Application No;'MS-9213 <br /> SUBJECT: Percolation. Testing : � <br /> r _ <br /> On April 5, 1992 representatives of Quali.ty. 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 /> The subsequent percolation testing was conducted -in accordance.with <br /> San Joaquin County's Percolation Test Procedures. <br /> Two percolation test borings were drilled using an eight-inch O.D. <br /> solid stem auger to depths of 39 inches for the shallow test hole <br /> . and 8 feet for the deep test boring. . -Test hole ' sidewalls were y <br /> scarified and sleeved with four=inch O.D. perforated PVC pipe to <br /> prevent cave-ins and insure test hole integrity. Gravel was added <br /> to the hole bottom- and -placed in the annular space between the <br /> perforated pipe and the bore hole. The 'test borings were pre- r � <br /> saturated 24 hrs before percolation testing, which commenced on r <br /> April 8, 1992. _ <br /> An exploratory test hole was drilled to a depth 6f' .20 feet. '. The <br /> data obtained from this test boring can be found in the Appendix- <br /> of this report as the "Log of Boring" . -Please find attached the <br /> "Field Percolation Testing Report" that -is signed by .the San <br /> Joaquin County Registered Sanitarian and includes test boring . <br /> locations, percolation rates and recommended sewage disposal area. <br /> Respectfully submitted, <br /> QU CONTROL INSPECTION;. INC.•,. _ <br /> R . <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 - I <br /> ' regarding our reports orletters is reserved,contingent upon thewritten authorization of Quality Control Inspection,Inc. 7 <br />