SITE INFORMATION AND CORRESPONDENCE 1995-2004

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James L. Tjosvold, P.E. August 7, 1996 Page 3 Response: 3. DTSC has misinterpreted the text in Section 5.0 and in the Executive Summary. These sections say that a draft Soil OUFS was submitted to the agencies. PG&E's recommendation is to begin remediation by implementing a remedy (that will be) recommended in the final FS (which has not yet been submitted to the agencies or finalized). To avoid further confusion,this has been deleted from the report. Revised pages ES-2 and 64 are attached for replacement in the existing report. Responses to RWQCB comments (dated July 2, 1996): General Comments Comment: 1. The report's authors and their qualification are missing. California Business and Professions Code Sections 6735, 7835, and 7835.1 require that engineering and geologic evaluations and judgments be performed by or under the direction of registered professionals. Therefore, the cover sheet should be signed by at least one registered professional who is responsible for the investigation report. Response: 1. Enclosed for insertion into the Phase IV report is a signature page which carries the seal, registration expiration date, and signature of Thomas M. Little, a California Registered Geologist employed by CH2M HILL. For the record, the comment does not accurately restate the requirements of the California Business and Professions Code sections cited, which apply to "...all final civil engineering plans, specifications, and reports" (§6735), and to "...all geologic plans, specifications, reports or documents"(§7835 and §7835.1). Contrary to the implication of the comment, there is no mention in those provisions of law to "engineering and geologic evaluations and judgments". Comment: 2. The site maps using air photos should be changed with regular computer aided drawing (CAD) maps. The air photos are appropriate when identifying former structures which could be potential sources of contamination. Once these structures have been identified, a CAD map (incorporating these structures) with a convenient scale should be used. The air photo map has extraneous components which really do not add value to the information being presented but in fact blur the picture because of the shadows. When using air photo maps, labeling the essential components also presents a problem because of the varying shades of light and dark. Sometimes labels are placed in dark areas and are difficult to read.