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<br /> H Chevron U.S.A. - Page 2
<br /> been provided as an informational .copy to Chevron that the subject property has
<br /> been included .in the underground storage tank "Pilot Program:"
<br /> Item 3•
<br /> With regard to the SJCEHD checklist, Form No.. EH N 45\CHECLIST dated
<br /> November 17, 1989, three items were checked. the forms' introductory statement
<br /> indicates the SJCEHD has discontinued the review of a workplan due to
<br /> deficiencies, and cannot properly complete the review until. those items checked
<br /> have been corrected. The items were checked as follows:
<br /> A. "Proposed program, including methodology, to define the extent of soil
<br /> and groundwater contamination."
<br /> In response to this checklist item, we suggest that the reviewer_ refer to
<br /> Dames & Moore'-s Proposed- Workplan; Project No. '16000-165-03, dated March 12,
<br /> 1989, pages 2, 3, 4, 5, in whicha purpose and scope, technical approach and
<br /> methodology of the proposed investigation. were presented; also, to Dames &
<br /> Moore's Proposed workplan Addendum (prepared -after initial review of the workplan
<br /> by SJCEHD). dated- May 24, 1989, pages 1; 2, and '3, which summarizes the details of
<br /> workplan modifications requested by the SJCEHD to obtain approval for the
<br /> proposed investigation to proceed,• and, the preliminary report prepared by, Dames
<br /> & Moore dated August 31, 1989, pages -3; .4, 5, ,6, 'and 7 which Summarize the
<br /> details of the purpose, scope, technical approach, and methodologies employed in
<br /> the evaluation of contamination conditions disclosed' at the subject property'
<br /> ,during the course of the investigation.
<br /> B. "Proposal to dispose of soil borings) cuttings and/or bailed water
<br /> volumes from monitoring well(s)'."
<br /> In response to this checklist item.,. we suggest that the reviewer refer to
<br /> the preliminary report prepared by Danes & Maore dated August 31, 1989,. page 7,
<br /> paragraphs 2 and 3 which summarize the details of how well development water and
<br /> soil cuttings were managed at the subj'ect ,property, including the proposed method
<br /> for future disposal of the water an' d soil. by Chevron: The methodology' presented
<br /> in the report was the methodology approved by the SJCEHD prior to commencement of
<br /> the field portion of the investigation.
<br /> With regard to the soil. disposition as referenced in the Proposed Remedial
<br /> Action Plan prepared by Dames & Moore dated -September 15, 1989, we suggest that
<br /> the reviewer refer to page 2, ""Pro.posed Remedial Plan", paragraphs 3, 4,- 5, •and-
<br /> .6, summarizing the details of -how contaminated soil a;re proposed to 'be .managed
<br /> and- treated at the subject property.
<br /> C. "Groundwater gradients based .on.,periodic water level measurements from
<br /> on-site monitor wells and domestic well(s) .
<br /> In' response to this checklist item, we invite the reviewer to observe the
<br /> fact that the proposed quarterly monitoring (Dames. & Moore's Proposed Remedial
<br /> Action Plan, September 15, 1.989, page 3; paragraph' 5) addresses the gradient
<br /> assessment on an on-going basis. Pursuant to the' review of .the proposed plan by
<br /> the. RWQCB, and their comment stating that approval of the quarterly monitoring
<br /> 7.6000165.RSP DAmEs 6: MOORE
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