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f <br /> C A M B R A Ms. Margaret Lagorio <br /> May 17, 2001 <br /> Soil Vapor Extraction (SVE) Feasibility Testing: Cambria will perform an SVE feasibility test <br /> on wells EW-1, MW-1, and MW-4B. The purpose of the test will be to determine if there are any <br /> hydrocarbons in the unsaturated zone below 22 feet below ground surface (ft bgs) and above the <br /> groundwater table. Equiva over-excavated to a depth of 22 ft bgs during dispenser repair and <br /> remediation activities. <br /> CLOSING <br /> We appreciate the opportunity to work with you on this project. Please call Owen Ratchye at <br /> (510)450-1984 if you have any questions or comments. <br /> Sincerely, <br /> Cambria Environmental Technology, Inc <br /> Gl /da;✓_ �E® GAO <br /> Owen C. Ratchye, PE <br /> Senior Pro a ngineer ( S M14AN A. 55R CtiiN <br /> • W No.EG 2055 <br /> M CERTIFIED o <br /> ® ENGINEERING <br /> GEOLOGISe' <br /> h A. Bork, C.E.G., C.HG. CAV <br /> Associate Hydrogeologist <br /> Figures: 1 -Groundwater Elevation Contour Map -Zone A <br /> 2- Groundwater Elevation Contour Map -Zone B <br /> Tables: 1 - Groundwater Extraction System-Analytical Results <br /> 2- Groundwater Extraction System-Mass Removal Calculations <br /> Attachments: A -Blaine Groundwater Monitoring Report and Field Notes <br /> B - GWE System Analytical Results <br /> cc: Karen Petryna, Equiva Services LLC,P.O. Box 7869 Burbank, CA 91510-7869 <br /> Marcus Pierce,RWQCB 3443 Routier Road, Sacramento, CA 95827-3098 <br /> Robert G. den Dulk, 2412 Avenue 360, Kingsburg, CA 93631 <br /> Dale Ramey, City of Ripon, 259 North Wilma Avenue, Ripon, CA 95366 <br /> gAtipon341 main1gm11g0Iqm.doc <br /> 3 <br />