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NEIL (� p A' GEOTECHNICAL <br /> . v• ANDERSON ENVIRONMENTAL <br /> A T E 5 <br /> INSPECTIONS a TESTING <br /> f LABORATORY SERVICES <br /> p POOL ENGINEERING <br /> POST TENSION DESIGN <br /> January 19, 2009 EasYLD <br /> NDA Project Number: LG5080551 JAN 2 <br /> U Zoos <br /> Lisa Medina ENViRONMENTtfEA(7H <br /> San Joaquin County Environmental Health Department PERMIT <br /> 600 East Main Street �SRVICES <br /> Stockton, CA 95212 <br /> Re: Percolation Test Rate Addendum <br /> Raverty Property <br /> 100 East Taddei Road <br /> Acampo, California <br /> Dear Lisa, <br /> The Environmental Health Department(EHD) has requested an addendum to the Raverty Property <br /> Soil Suitability Study/ Nitrate Loading Study to address the rapid percolation test results from the <br /> percolation test conducted by our office on December 15, 2008, <br /> Percolation Test Form and Results �II <br /> The completed percolation test form is included in the appendix of the SSS/NLS report. 1 <br /> A shallow percolation test is defined by the EHD as being between 36 and 42 inches in depth; a <br /> satisfactory percolation rate for a shallow test is less than or equal to 60 minutes per inch drop. A <br /> deep percolation test is defined as being between 3.5 and 25 feet in depth, a satisfactory <br /> percolation rate for a deep test is 30 min/in or less. One percolation test must demonstrate a <br /> satisfactory percolation rate within the proposed septic system disposal field of each parcel to <br /> utilize a standard septic system. Details of the percolation tests are summarized in the table <br /> below. <br /> Table 3, <br /> Summa of Percolation Tests. <br /> Test No., Percolation Test Percolation RateTest Duration Comments <br /> Date Tested Depth (ft.) (milnuteslinlch) (see notes) <br /> P-1 (shallow) 3.30 X.1 1 hr satisfactory <br /> 12-15-08 percolation rate <br /> Note: A satisfactory peroulatlon rete For a"shallow"test is less than or equal to 60 minutes per inch'. <br /> - <br /> A satisfactory percolatlan rate for a"deep"test Is less than or equal to 30 minutes per inch. <br /> ANGELS CAMP • LODI • MODESTO RENO . SACRAMENTO • WALNUT CREEK <br /> L 0 D 1 902 Tndustrial Way • Lodi,CA 95240 • 209.367.3701 • FAX 209-369.4228 m www.noanderson.com <br />