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M <br /> k" KLEINFELDER <br /> File No. 20-2982-02 <br /> May 21, 1991 # <br /> MAY 2 8 1991 <br /> LINIVIRO1`JNI NYAL HEALTH <br /> Hogue Construction Company, Inc. PERMIT/SERVICES <br /> 9390 East Handel Road <br /> Lodi, CA 95240-9430 <br /> Attention: Mr. James F. Hogue <br /> Subject: ADDENDUM TO SEPTIC SYSTEM SUITABILITY STUDY <br /> HOGUE PROPERTY PARCEL SPLIT <br /> REPORT DATED JULY 20, 1990 <br /> SAN JOAQUIN COUNTY, CALIFORNIA <br /> MS-90-106j� <br /> Gentlemen: C� <br /> This letter is intended as an addendum to our septic system <br /> suitability study report dated July 20, 1990, which was prepared <br /> for the proposed Hogue property parcel split. Originally, the <br /> aproximate 156-acre property located at the northeast corner of <br /> Harney Lane and Tully Road was to be split into three parcels of <br /> approximately 76, 40 and 40 acres. We understand that it is now <br /> planned to split the proposed 40-acre parcel located at the <br /> southeast corner of the site into two additional parcels of <br /> approximately 30 and 10 acres. We understand that San Joaquin <br /> County Environmental Health has requested that an additional <br /> percolation test be performed on the proposed 10-acre parcel <br /> located as shown on Plate I of this report. <br /> On May 15, 1991, a representative of our firm drilled and set up <br /> one 3-foot deep percolation test on the proposed 10-acre parcel . <br /> The test hole was drilled with hand drilling equipment using a 6- <br /> inch diameter continuous flight auger. Perforated PVC pipe was <br /> inserted into the test hole to prevent disturbance when adding <br /> water. The test hole was filled to the surface with water and left <br /> to soak overnight. <br /> On May 16, 1990, our representative returned to the site and <br /> performed the 3-foot deep percolation test. As per San Joaquin <br /> County guidelines, the test was performed for a period of four <br /> hours. The last thirty minutes of the test were used to calculate <br /> the percolation rate. In order to use standard leach lines, the <br /> County requires a percolation rate of 60 minutes per inch or faster <br /> at the 3-foot depth. The 3-foot deep test performed produced a <br /> passing test of 60 minutes per inch. The County approved <br /> percolation test sheet is included with this letter. <br /> KLEIR44jWt0t AM j A40"OeNr IFF-Stockton, CA 95205 (209) 948-1345 <br />