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A <br /> nAPMU <br /> Working to Restore Nature . <br /> INSTALLATION OF PIPING FOR THE REMEDIATION SYSTEM <br /> During October 1993,RESNA observed Triangle, Inc. (Triangle) of Sacramento, California, <br /> excavate trenches .and installhorizontal piping for the potential rernediation system. <br /> WORK IN PROGRESS <br /> Install ation.of vapor extraction piping and air sparge piping is complete. The final design <br /> of air sparge-and vapor extraction-'system design and permitting is in progress. RESNA`is <br /> currently working on the Problem Assessment Report. <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> We understand that ARCO will continue quarterly monitoring. We recommend that copies <br /> of this report be forwarded to. M'r. Michael Infurna of the San Joaquin Public Health <br /> Services, P.O. Box 2009,' Stockton, California 95201 and Ms. Elizabeth'Thayer of the <br /> California. Regional Water Quality .Control Board, Central Valley Region, 3443 Routier <br /> 'Road, Sacramento, California 95827-3098. <br /> t` <br /> i <br /> E 1213ccar/30003-9 4 <br /> I <br />!E _ <br /> E <br />