Laserfiche WebLink
5 <br /> F <br /> Second Quarter 1998 Groundwater Monitoring Report and Closure Request for Former Diesel Tank Site <br /> Colberg Boat Works,401 North Stockton Street,Stockton,Caiiforma <br /> Page 4 <br /> RECOMMENDATIONS <br /> The diesel impacted groundwater and soil is defined and the diesel impact is not migrating at the <br /> former diesel tank area at the subject site Mass balance calculations indicate less than one pound <br /> of diesel remaining <br /> nk in thebsurface Therefore, m <br /> pex recomends closure be granted-foi the <br /> es � <br /> former diel talocation, Which is on the west si a of the subject site area - - <br /> Apex also recommends discontinuing analyses for oxygenate constituents with t -smpe exception of <br /> MTBE in wells MW-1, MW-2 and MW-3 MTBE would be analyzed in subsequen ales by Y <br /> EPA Method 8020 Apex further recommends discontinuing analysts for TPHd in wells MW-1, <br /> MW-2 and MW-3 <br /> Apex is currently in the process of developing a feas„�ibility test workplan for the installation of <br /> oxygen release compound (ORC in morntonng well MW-3 —the remaining impacted well on site <br /> '---.This workplan should be submitted wrtlun the next 30 days / <br /> REPORT DISTRIBUTION <br /> Apex submitted a copy of this report to <br /> 1 Mr Jeffrey Wong <br /> San Joaquin County Environmental Health Division <br /> 3 04 East Weber Avenue <br /> Stockton, California 95201 <br /> 2 Ms Elizabeth Thayer <br /> Central Valley Regional Water Quality Control Board <br /> 3443 Routier Road, Suite A <br /> Sacramento, California 95827-3015 <br /> • <br /> JY C 1 100 001-COLBERG BOAT WORKSIQMR04981QMR0498 DOC <br />