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Department of Toxic Substances Control <br /> Edwin F. Lowry, Director <br /> 10151 Croydon Way, Suite 3 <br /> Winston H. Hickox Sacramento, California 95827-2106 <br /> Gray Davis <br /> Agency Secretary Govemor <br /> California Environmental <br /> Protection Agency <br /> MEMORANDUM <br /> TO: Jerry Lile <br /> Department of Toxic Substances Control <br /> Sacramento Office <br /> 10 15 l Croydon Way, Suite 3 <br /> Sacramento, CA 95827-2106 <br /> c% + <br /> FROM: Michael O. Finch, R.G. <br /> Senior Hazardous Substances Engineering Geologist <br /> Geologic Services Unit <br /> DATE: December 6, 2000 <br /> SUBJECT: REVIEW OF ARCADY DISPOSAL SITE DRAFT SITE INVESTIGATION <br /> 'WORKPLAN DATED NOVEMBER 2, 2000. <br /> The Geologic Services Unit (GSU) reviewed the above subject Report and has the following <br /> comments: <br /> I) Volatile Organic Compounds (VOCs) were tested using EPA Method 5035. The GSU <br /> recommends Method 5035 using En-core, methanol preservation, etc. as a more accurate <br /> technique instead of an onsite lab. <br /> 2) The GSU notes that no continuous bore holes to ground water were mentioned in the <br /> report. Without continuous cores correlation becomes difficult. <br /> 3) Ground water contour maps are missing from the report and are needed to establish flow <br /> directions. Site cross-sections are also needed. <br /> O Printed on Recycled Paper <br />