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California Regional Water Quality Control Board <br /> Central Valley Region <br /> Steven T.Butler Chair <br /> Winston Ii*.Hickox S Gray Davis <br /> Serretan,.Ror ,Sacramento Main Office l Governor <br /> Environmental Internet Address: http://"-A-.swrcb.ca.gov/—rwgcb5 1 4� <br /> Proterrion 3443 Routier Road,Suite A,Sacramento,California 95827-3003 r l <br /> Phone(91 G)255-3000•FAX(91 G)255-3015 v` <br /> 2 March 2000 <br /> Ms. Margaret Russell <br /> c/o Mr. John Welch <br /> P.O. Box 690757 <br /> Stockton, CA 95269 <br /> WELL INSTALLATION APPROVAL,FORMER KARLSON TRUCKING, <br /> MANTECA, SAN JOAQUIN COUNTY <br /> I have reviewed the 15 and 21 February 2000 transmittals of your consultant, Geo-Phase Environmental, <br /> for the former Karlson Trucking site in Manteca. The 15 February letter/report describes the results of <br /> soil and groundwater sampling at the site and proposes installation of one upgradient monitoring well <br /> and one downgradient monitoring well. The 21 February facsimile proposes alternative well locations. <br /> Based on my discussions with Mr. Steve Lanford of Geo-Phase on 18 and 24 February, I hereby <br /> approve the proposed well locations as specified in the 21 February facsimile. As agreed with <br /> Mr. Lankford, a report on the well installation would be submitted to the Board by i5 Apri12000. <br /> Please inform me at least 72 hours prior to installation of the monitoring wells so that I may be present <br /> to observe and/or take split samples. If you have any questions, you may call me at (916) 255-3081 or <br /> e-mail at isorenp@rb5s.swrcb.ca.gov. <br /> PHIL S. ISORENA <br /> Associate Engineer <br /> cc: San Joaquin County Public Health Services, Stockton <br /> Mr. Stephen M. Lankford, Geo-Phase Environmental Inc., Modesto <br /> California Environmental Protection Agency <br /> C4 Rerycled Paper <br />