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TWE 2 <br /> VAPOR EXTRACTION SYSTEM ANALYTICAL DATA <br /> Shell Oil Products Company <br /> 141 N. El Dorado Street <br /> Stockton, California <br /> WIC# 204-7524-1509 <br /> Date Sample Flow TPPH Benzene Open Comments <br /> ID No Rate Removal Int Cone Eff Cone lnf Conc Wells <br /> (scfm) <br /> Rate Cum Undiluted Undiluted <br /> (lbs/hr) (lbs) (ppmv) (ppmv) (ppmv) <br /> 4-Dec-95 Influent 126 0 029 1726 17 0 0 028 VEW-1, VEW-2 Suspect system shut down on <br /> 12/11/95 <br /> 19-Dec-95 131 VEW-1,2,3,4,MW-3 Restarted system on 12/19/95 <br /> 3-Jan-96 Influent 127 0 021 1744 13 0 0 022 VEW-1,2,3,4,MW-3 <br /> 5-Feb-96 INF 126 0 003 1754 <1 4 0 <0 016 VEW-1,2,3,4,MW-3 <br /> 29-Feb-96 System shut down <br /> 18-Apr-96 Influent Air 120 0 005 1757 <2 8 NS <0 031 VEW-1,2,3,4,MW-3 System re-started <br /> 17-May-96 Influent Air 120 0 006 1760 3 4 NS <0 016 VEW-1,2,3,4,MW-3 <br /> 12-Jun-96 Influent Air 120 0 003 1763 2 0 NS <0 016 VEW-1,2,3,4,MW-3 <br /> 29-Jul-96 Influent Air 120 0 002 1767 <1 4 NS <0016 VEW-1,2,3,4,MW-3 <br /> 21-Aug-96 Influent Air 120 0 002 1768 NS NS NS VEW-1,2,3,4,MW-3 System shut down <br /> Abbreviations <br /> TPPH =Total Purgeable Petroleum Hydrocarbons quantitated as gasoline by EPA Method 8015 (Modified) <br /> ppmv = parts per million by volume <br /> scfm =standard cubic feet per minute <br /> <x= not detected at detection limit x <br /> NS = Not Sampled <br /> Notes <br /> Air permit canceled 12/95 - waiver under less than 2 lbs/day TPPH extraction from soil <br /> System consists of one 5 hp regenerative blower with two 2000 Ib GAC units in series <br /> Detection limit used for mass removal calculation when influent not detected <br /> Cumulative operation time estimated by calendar <br /> 96369 4 <br />