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Mr_ Mike Whelan <br /> ARCO Products Company <br /> February 14, 1997 ' <br /> Page 3 <br /> FGiven the fact that the two follow-up sampling episodes.showed nondetect concentrations <br /> of petroleum fuel hydrocarbons and volatile organic compounds in groundwater, and the <br /> former.inconsistency in reporting by the laboratory, it appears the identified contaminants <br /> are a result of cross' contamination. (both by .the ;laboratory and during original . <br /> drilling/sampling operations) and not from site'soils: <br /> It is,therefore,SECOR's opinion that an environmental concern does not exist at the facility <br /> with respect to impact by petroleum fuel hydrocarbons or volatile organic compounds. <br /> Closure <br /> Thank you for the opportunity to be of service on this project:'Do not hesitate to contact <br /> the,.undersigned if you have questions.regarding the information presented <br /> A5 S ,gl <br /> Respectfully submitted, <br /> SECOR International Incorporated' No. c47826 m <br /> CC <br /> EXP. <br /> . tz•sS;99 <br /> cf j. C) <br /> - j - CA <br /> B. Pete Bergeron ,Nicholas Hont, P.E. <br /> Senior Hydrogeologist Principal Engineer <br /> Attachments: Table 1 - Historical Groundwater Depths/Elevations and Analytical Testing <br /> Results <br /> Figure 1. Groundwater Contour.Map, December 26, 1996 Data <br /> Appendix A SECOR Field Operations Protocol <br /> Appendix B -. Chain-of-Custody Records <br /> Appendix C - Laboratory Data Sheets and QA/QC Summary <br /> Appendix D - SECOR Water Sample Field Data Sheets <br /> s <br /> Distribution: (1) Addressee <br /> .(1) Mr. Ron Faust <br /> ARCO Products Company <br /> k 1659 Birchwood - P.204 <br /> Bellingham, Washington 98225 <br /> JN 40007-097-01 <br /> LHG:VVP:97-02feb;a-maQ1ec gwm <br /> I� <br /> g <br />