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MAY 17 '00 08 46AM ENSR SACRAMENTO P 2114 <br /> ' EINM <br /> j Memorandum <br /> i <br /> To. Albert Vigil, SJCC Date" May 10, 2000 <br /> From Doyle Kim, ENSR/Sacramento File- 8728-001 000 <br /> RE SVE System Operation Summary Cc Joe Ramage/Ramage Environmental <br /> San Joaquin Catholic Cemetery(SJCC) <br /> February 15 through April 13, 2000 <br /> VIA FACSIMILE (209) 465-2866 <br /> Hours of operation The unit was shut down from February 15 through Apni 13, 2000 to assess <br /> rebound <br /> Vacuum range <br /> Average flow rate <br /> Extracbon Wells VW-2S,3 <br /> Pounds recovered (to Date) 7,0015 TPHg <br /> Recovery Rates(upon restart) <br /> 4113100(lbs/day) <br /> Purgeable Hydrocarbons 301 <br /> I Benzene 000 <br /> Toluene 0 01 <br /> Ethylbenzene 000 <br /> Xylenes 003 <br /> Reporting Penod Operations <br /> The system was shut down between February 15 and April 13,2000 to assess rebound Upon restart the <br /> removal rate was higher than before the shut down by approximately 50% The latest removal rate is <br /> only 0 04% of the total pounds of TPHg removed by the system The SVE has reached a paint of limded <br /> continued effectiveness <br /> Upcoming Actions <br /> ENSR plans on removing the system at the end of May 2000 <br /> Attachments <br /> Table 1 —SVE System Operation Summary <br /> Table 2—SVE System Influent Concentrations, Mass Removal Rates, and Total Mass Removed <br /> Graph 1 —SVE System Extraction Rate and Mass Removed for Purgeable Hydrocarbons and <br /> Benzene <br /> y\BDGSACRAMENTOu]ATAkENG\Doyfe1S.J C CISVE 4ps8um-SJCCApr2000 dx <br />