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fuel <br /> began to decline in mid- <br /> Engine speed and auxiliary <br /> declineeln flaw rate through the end <br /> February, leading to a steady <br /> of the month. This trend a460eincharily enginee Much ower flow rates <br /> in early March <br /> prior to replacement of thewhen the 4-cylinder engine was <br /> were established in late March, <br /> installed. There is sone5�ndecth�snsmallervapor <br /> enginenwasre <br /> installedV <br /> begun to increase aga <br /> 4 .2 Weight of VOC' s Destroyed <br /> r day <br /> In the 3rd Quarter Reporseries of t, the i equations ght of that sInvolvedevvapor <br /> was calculated using a <br /> concentrations, flowbecause the unitne Peoperated ed, and xi termittentlyuand <br /> This was necessaryof <br /> erratically during <br /> nPID measurements <br /> ot cons dered reldiable. Now that several months <br /> creliable oncentration were <br /> of continuous operation b been etococal calculate theleted and total weight aof <br /> are available, it i possible By <br /> destroyed VOC' s duri�gueh(FigurePat5) and using the the PID <br /> concentrations over the calculation can be simplified: <br /> of extracted vapors (Figure 4) , <br /> WEIGHT OF VOC' s = CF x {VAPOR} x 10-6 x 100 mol/wt - 379 CF/mol <br /> WT = 29 x 106 ft3 x 7000 x 10-6 x 100 mol/wt - 379 ft3/mol <br /> = 203 x 105 lbs - 3 .79 x 102 <br /> = 5356 lbs <br /> The actual weight n mnbe slightly t 98 ,.7$f the destruction <br /> efficiency of the engine has remained a <br /> 5 .0 GROUNDWATER MONITORING <br /> 5. 1 Monitoring Procedures <br /> 94 <br /> Goundwater monitoring n torPngce on wells ewereeopened9andanall wed February <br /> to <br /> eq 1995 . The six pressure, after which the depth to <br /> equalize with atmospheric The <br /> groundwater was measured <br /> with the lfieldinst wmonitori g dataater level r sheet <br /> measurements were reco <br /> (Appendix B) . <br /> After the depth had been measured, those wells that contained <br /> sufficient water were purged of approximately 3 well <br /> bailers .volumes <br /> gallons) of standing water, using dedicated d-.sp _ <br /> During the December event, non <br /> samples e of hwere wellscontained <br /> During sufficient <br /> water, and no gyve <br /> February event, five of the six wells contained suffient water or <br /> purging and sampling (Appendix B) . The purged water was stored in <br /> 5 <br />