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,Fye <br /> Woodward-Clyde <br /> Srl,t:n,n - • <br /> U::kl,ind.C,.:61. ri dU I 1 <br /> 1� <br /> August 16, 1990 <br /> 8720033BC-0001 <br /> Mr. Mike Golden <br /> State Architect's Office <br /> P.O, Box 1079 <br /> Sacramento, CA 95805 <br /> Subject: Problem Assessment Report <br /> Caltrans Shop 10 Facility <br /> 1603 South B Street <br /> Stockton, CA 95206 <br /> Dear Mr.Golden: <br /> Enclosed is our report summarizing the results of our second phase of field investigation <br /> of underground storage tank contamination in the Shop 10 Area of the California <br /> Department of Transportation facility on South B Etreet, in Stockton, Csliforn.a. <br /> The results of our investigation were prepared in the format of a Problem Assessment <br /> Report under March 1987 Central Valley RWQCB Guidelines. The report further <br /> delineates the.•axtent of horizontal and vertical contamination and recommends two ; <br /> remedial actico alternatives - groundwater extraction with either VES or enhanced <br /> insitu biodegradation. Additional subsurface characterization and bench scale modeling <br /> is required prior to the implementation of remedial action. <br /> A copy of this report should be submitted to the City of Stockton, San Joaquin Health <br /> Agency and the Central Valley Regional Water Quality Control Board. <br /> Please call if we can be of additional assistance. <br /> I <br /> Sincerely, <br /> WOODWARD-CLYDE CONSULTANTS <br /> Michael S. Bonkowski <br /> Project Manager <br /> f <br /> l:un;ultrry I h!r pnr;r:',. <br /> - - . :.uaSE.rl;v,nnrn':gd:;rr,yrtnl•. � i,,- �i - <br /> CIISrcx",nl 111hr: I hu,rr=i U('.iW:n ,.,. <br />