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MAY 17 '00 11 39PM ENSIR SACRAMENTO P 2/14 <br /> .ter <br /> Memorandum <br /> TO ,filbert Vigil, SJCC Date: May 10,2pd0 <br /> From- Doyle Kim. ENSRISacramento File: 8728-001000 <br /> RE- SVE Systern Operation Summary CC: Joe Ramapefkamage Environmental <br /> San Joaquin Ca"ic Cemetery(S,ICC) <br /> February 15 through April 13,2000 <br /> VIA FACSIMILE. (209)465.2856 <br /> I <br /> Hours of operation The and was shut down from February 15 through April 13, 2000 to assess <br /> mound <br /> Vacuum range <br /> Average Dow rata. <br /> Extraction Wells VW-2s' 3 <br /> Pounds recovered ito Daae) 7,0015 TP H9 <br /> Recovery Rates(upon restart) <br /> . 411$100(lbs/day) <br /> Purgeable Hydrocarbons 3 01 <br /> Benzene 0 00 <br /> Toluene 0 01 <br /> Ethylbenzene 1 0 00 <br /> Xylenes 0 03 <br /> Reporting Period Operations <br /> The system was shut dawn between February 15 and April 13, 2000 to assess rebound Upon rastart 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 point of Iffnited <br /> continued effectiveness <br /> Upoarrung Actions: <br /> ENSR plans on removing the system at the end of May 2000 <br /> Atlaohments_ <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 Purgeabfe Hydrocarbons and <br /> B,ermene <br /> l DG-SACRAMENTCXDATAeN(3%UoyleXS J C QSVE 0psSurn,JQCAPr20Xdoc <br />