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ICF KAIS � <br /> ENVIRONMENT& ENERGY GROUP � <br /> a 1 <br /> ICF Kaiser Engineers, Inc. <br /> 11290 Point East Drive, Suite 200 F E B 10 ��E <br /> Rancho Cordova, CA 95742 <br /> 916/852-3700 Fax 916/852-3777 <br /> ENVl120NMENTA! ;�r".,:_� <br /> PERMIT/SERVICES <br /> February 9, 1994 <br /> Ms. Mary F. Meays <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 445 North San Joaquin, P.O. Box 0388 <br /> Stockton, California 95201-0388 <br /> Subject: 425 North Union Street, Stockton - Site Code: 241434 <br /> Dear Ms. Meays: <br /> As a prelude to our scheduled meeting on February 10, this letter is intended to introduce <br /> myself and my firm, ICF Kaiser, and to give you a preview of the approach we are planning <br /> to use to obtain closure of the subject site as soon as possible. My resume and an ICF <br /> Kaiser brochure are enclosed for your information. <br /> ICF Kaiser has been contracted by Union Ice Company to complete the additional work <br /> required to bring the site to closure. At our meeting on Thursday, I hope to discuss the <br /> scope of ICF Kaiser's planned activities. A formal work plan for the required work will be <br /> developed for your review by the end of February, 1994. We will also be conducting the <br /> future site monitoring and reporting activities, with the next quarterly field work scheduled <br /> for late March and the monitoring report to be delivered by April 29, 1994. <br /> We will be investigating the site to determine whether further remedial actions are required <br /> at the site. I have considerable experience on the subject of site-specific health-based cleanup <br /> levels, and I am currently serving on the Underground Storage Tank Technical Advisory <br /> Committee (USTTAC) to the California State Water Resources Control Board, directing the <br /> LUFT Manual revision and developing soil and groundwater cleanup-level guidance. We <br /> propose to analyze and interpret the existing site data in terms of the potential for health risks <br /> and water-quality degradation, and to perform Hydropunch groundwater sampling <br /> downgradient of former Tanks 3 and 4. <br /> Hydropunch sampling is an established, USEPA and RWQCB approved sampling technology, <br /> for which I have attached TCF Kaiser's Standard Operating Procedures. If the analyses of <br /> the Hydropunch groundwater samples show non-detectable benzene concentrations and <br /> insignificant concentrations of TPH, toluene, ethylbenzene, and xylenes, we would propose <br /> to continue the quarterly sampling, analysis, and reporting for wells <br />