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r <br /> Walter E. Curtis <br /> Civil Engineer <br /> CE #11584 <br /> 418 Matthew Plaza <br /> Lodi , California 95240 <br /> Phone: (209) 368-4159 <br /> San Joaquin Local Health District <br /> Environmental Health Division <br /> Subject: Percolation Tests (Parcel Map No. MS-89-20, Parcel No. 1 ) <br /> Submitted for your review is the result of one percolation test performed on <br /> the Joe and Ruth Heuvel property located at 24369 So. Mohler Road, in the City of <br /> Ripon, State of California, in San Joaquin County. <br /> The planned development proposes to separate out Parcel No. 1 , 2.0 acres, from <br /> a larger 20.0 acres agricultural parcel for a mobile home site. The test was per- <br /> formed in accordance with the percolation test procedures outlined in the "Manual <br /> of Septic Tank Practice" , published by the U.S. Department of Health, Education and <br /> Welfare, and per requirements of the San Joaquin County Health District. <br /> Engineer' s Certificate: <br /> On December 13 and 14, 1988, one percolation test was performed on the above <br /> referenced property under my direction in conformance with San Joaquin Ordinance <br /> No. 549. The approximate location of the soil profile and percolation test holes <br /> are shown on the accompanying Parcel Detail Map. <br /> A percolation rate of 30 minutes per inch is the result of the test and a <br /> 10,000 sq. ft. minimum usable sewage disposal area for Parcel No. 1 is recommended. <br />