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5 1988 <br /> ENVIROMENTAL HEALTH <br /> c/y� FERMIVSERVICES <br /> E ®t1 <br /> ASSOCIATES <br /> Consultants in Wastes <br /> Management and August 23, 1988 <br /> Environmental Control Project 174-18.01 <br /> r. Jim Walsh <br /> tockton Scavenger Association <br /> 240 Navy Drive <br /> tockton, California 95206 <br /> Re: Preliminary Soil Sampling <br /> and Analysis Plan <br /> Pear Jim: <br /> EMCON Associates has prepared a preliminary soil sampling and analysis plan <br /> for the storm-water collection pond and drainage channel at Stockton <br /> Scavenger Association , 1240 Navy Drive (see Figure 1) . This preliminary <br /> flan was developed in response to comments on the July 15 , 1988 EMCON soil <br /> ampling and analysis plan by David Carls of the San Joaquin Local Health <br /> istrict. <br /> he July 15 , 1988 plan included collecting soil samples at three depths at <br /> 3 locations and analyzing at least 16 composite samples and 10 discrete <br /> amples for high boiling point hydrocarbons as oil and diesel . Oil and <br /> �iesel are the most likely pond contaminants. Some samples were also to be <br /> analyzed for gasoline, benzene , toluene, and xylenes and ethylbenzene to <br /> ssess whether these contaminants were present. <br /> n August 11 , 1988 Mr . Carls stated that sample compositing will not be <br /> llowed and that samples must be analyzed separately for the following <br /> arameters: <br /> o Total petroleum hydrocarbons as gas or diesel <br /> o Oil and grease <br /> o Benzene, toluene, xylenes and ethylbenzene <br /> e Chlorinated hydrocarbons <br /> • Semivolatile organics including polychlorinated biphenyls , pen- <br /> tachlorophenol , polynuclear aromatic compounds, and creosote <br /> • Cadmium, chromium, lead, and zinc <br /> this broad spectrum of analyses would be very expensive if we analyze the <br /> number of samples suggested in the original plan . An alternative is to <br /> 1921 Ringwood Avenue, Sari Jose, California 95131, (408)275-1444 <br />