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F ' k%1 KLEIN FELDER <br /> File No. 20-2768-65 <br /> March 14, 1990 <br /> According to San Joaquin County, a percolation rate of 60 minutes <br /> per inch or faster is required to use shallow leach fields . Based <br /> on this criteria, two of the eight tests performed produced passing <br /> rates at a depth of approximately 3 feet. The next step would be <br /> to perform percolation tests at depths below 3 feet in order to <br /> find a strata that percolates at a rate of 30 minutes per inch or <br /> faster. The County permits the use of sump pits, provided a strata <br /> with a percolation rate of 30 minutes per inch or faster is <br /> encountered. <br /> We trust this report presents the information required at this <br /> time. If you have any questions regarding this project, please <br /> contact us . <br /> Respectfully submitted, <br /> KLEINFELDER, INC. <br /> Steven R. Davis <br /> Staff Geologist <br /> /6tz C. "OV <br /> Patrick C. Dell, C.E . <br /> Project Manager <br /> SRD:bja <br /> MD4 : cc: San Joaquin County Environmental Health <br /> Thompson Hysell Engineers <br />