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. Klemtel4er, C. E. 12541 <br /> C. M "9 uG" McRae. C. E. 15439 <br /> J. H. KLEINFELDER & ASSOCIATES , ` RichadM.W;y,C E17675625 <br /> CONSULTING SOILS & FOUNDATION ENGINEERS ENGINEERING LABORATORIES <br /> File No. S-2008-1 <br /> January 22 , 1973 <br /> Schmid Development , Inc . <br /> 2949 Randolph Street <br /> Costa Mesa , California 92626 <br /> Attention: Mr. Mike Mensinger <br /> Gentlemen: <br /> SUPPLEMENTARY REPORT <br /> PERCOLATION STUDIES <br /> PROPOSED SUBDIVISION <br /> HAMMER LANE AND HIGHWAY 99 FRONTAGE ROAD <br /> STOCKTON, CALIFORNIA <br /> INTRODUCTION <br /> In this report are presented the results of supplementary <br /> percolation studies performed for the proposed subdivision. <br /> These studies were made at your request and are intended to <br /> supplement the percolation data on the near-surface soils <br /> presented in our report dated December 21, 1972 . <br /> We understand that disposal of sewage effluent in dry <br /> wells or seepage pits , rather than in shallow leach lines , is <br /> being considered. The dry wells or seepage pits would be <br /> approximately 20 to 25-feet deep . The purpose of our supple- <br /> mentary percolation studies has been to evaluate the perco- <br /> lation rate of the soils to a depth of 25 feet . <br /> FIELD STUDIES <br /> Two supplementary borings were drilled in the proposed <br /> sewage effluent disposal area . The approximate boring <br /> Exibit F <br /> +f 2825 EAST MYRTLE STREET - STOCKTON. CALIFORNIA 95205 / TELEPHONE (209) 4662932 <br /> 446 NORTH BLACKSTONE AVENUE / FRESNO. CALIFORNIA 93701 / TELEPHONE (209) 2336545 <br /> 1423 FORTY-SEVENTH AVENUE / SACRAMENTO, CALIFORNIA 95822 / TELEPHONE (916) 4212821 <br />