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v JN'40007-095-01 <br />Julie 4,- 1997 <br />Mr. Ron Faust <br />New Site Engineer <br />ARCO Products Company <br />1659 Birchwood - P.204 <br />Bellingham, Washington 98225 <br />PRELIMINARY GEOTECIINICAL INVESTIGATION <br />Proposed ARCO AMIPM Facility #YWNE <br />2470 Grant Line Road <br />Tracy, California <br />Dear Mr. Faust: <br />/nter•national incorporatect <br />At your request, SECOR International Incorporated (SECOR) is pleased to present the following <br />"Preliminary Geotechnical Investigation" for the subject site. <br />This investigation was performed in accordance with the instructions received from ARCO <br />Products Company (ARCO). The objective of the geotechnical investigation was to assess the <br />underlying soil conditions and make geotechnical recommendations for design and construction of <br />the proposed development. <br />The results of this investigation indicate that, from a geotechnical viewpoint, the site is suitable for <br />the proposed development provided that the recommendations presented in the report are <br />incorporated into the design and construction of the facility. Information from the site review and <br />field exploration indicate that most of the site is covered with one to two feet of asphalt and gravel. <br />In order to provide uniform support for the proposed facilities, we recommend that the asphalt and <br />gravel, along with native soil within the top two feet below rough grade, be removed and replaced <br />as compacted fill. <br />A "Geotechnical/Construction Inspection Schedule" check list of various grading tasks and <br />milestones requiring geotechnical engineering inspection and reporting is included as Appendix D. <br />This checklist must be completed and signed by the contractor and presented with the necessary <br />grading report submittals to the ARCO Project Engineer and SECOR at the end of the job. <br />The findings of the investigation and recommendations for site development are presented in the <br />attached report and are summarized on the following summary page. <br />IN 40007.095-01 <br />ftWsw\97-06junAeUcygeo.doc <br />_IiSo 1-1 ( (..I <1_' i I /5/i MOM) ;.;i-01 /0 0)09) J;i 012t) F I\ IIYt'It"SCO ul'.<' MI <br />