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Table 2. Exxon RS 7-3942 UVB System Performance Parameters <br /> Date Cumulative Vacuum at Air Intake Vacuum UVB UVB Off-Gas Increment Mass Cumulative Mass <br /> Hours of UVB Flowrate at UVB Off-Gas TPH-g f TPH-g Removed of TPH-g Removed <br /> Operation Well Head at UVB Well Blower Flowrate Concentration by UVB System by UVB System <br /> (hrs) (mbar) (ft3/min) (in H20) (fl3/min) (ug/1) (Ibm) (lbm) <br /> 02/06/97 00 50 155 24 175 590 000 000 <br /> 02/17/97 1171 45 NM 17 175 530 4521 4521 <br /> 02/20/97 2676 45 NM 19 73 610 5220 9741 <br /> 02/27/97 3788 42-47 NM 19 565 NS 18 52 11593 <br /> 03/07/97 5692 45-55 100 22-30 50 620 2454 14046 <br /> 03/14/97 7360 45-50 85 23 103 240 1934 15980 <br /> 03/21/97 903 8 59 125 23 130 110 15 51 175 31 <br /> 03/28/97 10738 47 145 21 157 51 909 18440 <br /> 04/10/97 13074 33 90 15 93 230 699 191 39 <br /> 04/21/97 15675 NM NM 14 NM 510 2080 21220 <br /> 05/01/97 18036 31 118 125 125 190 41 87 25407 <br /> 05/06/97 19295 31 115 14 117 23 11 18 26525 <br /> 05/16/97 23630 31 NM 13 NM NS 436 26962 <br /> 06/04/97 2621 8 35 109 15 125 38 460 27421 <br /> 06/16/97 29079 39 NM 15 NM NS 508 27930 <br /> 06/23/97 30779 41 102 175 108 NS 261 28190 <br /> 07/02/97 32928 49 889 21 88 24 1 70 28360 <br /> 07/09/97 33515 50 83 21 92 NS 048 28409 <br /> 09/11/97 33523 33 125 13 12 980 004 284 12 <br /> 09/18/97 35213 33 125 13 12 NS 743 291 55 <br /> 09/25/97 3688 1 28 83 11 83 NS 5073 34229 <br /> NM=Not measured,NS=Not sampled <br /> Note Flow values for 09/11/97 are based on the values recorded the following week <br /> *The WB groundwater treatment system was shutdown between 07/09/97 and 09/11/97 for mamtanance reasons During this period thc.SVC system was operated <br /> Mass of TPHg removed(lb)=Concentratton(ug/L)*Off-gas Flowrate(efm)*l fours of Operation(hr)*3 74E-06(lb/ug)(L/tt3)(mn1hr) <br /> F 1PROJECTS151539 421PUBLICIO&MWS DATA WB2 <br />