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i IPA TaT -1 <br /> Soil Vapor Extraction System Performance Data <br /> ARCO Service Station#2133 <br /> 2908 Benjamin Holt Drive,Stockton,California <br /> Sample Average flow Days in Down days Percent Influent cone,ppmv Removal rate,lbs/day Net removal lbs <br /> date Period rate,cfm period in penod operational TPH-G Benzene TPH-G Benzene TPH-G Benzene <br /> 1111195 Source test 100 1 0 10C% 590 1 7 221 005 22 lbs 0 0 lbs <br /> 219195 1/11/95-219/95 80 29 1 97% 480 4 5 144 Oil 403 lbs 2 9 lbs <br /> 3128/95 219195-3128195 80 47 34 28% 160 0 62 4 8 001 62 lbs 0 2 lbs <br /> 414195 3128195-414195 80 7 0 100% 190 047 5 7 001 40 lbs 0 1 lbs <br /> 513195 4/4195-513195 100 29 1 97% 460 12 172 035 482 lbs 9 8 lbs <br /> 5115195 513195-5115195 100 12 1 96% 340 88 12 7 026 146 lbs 3 0 Ibs <br /> 6112/95 5/15/95-6112195 100 28 3 89% 240 1 8 9 0 005 225 Ibs 1 3 lbs <br /> 718195 6112195-718195 100 26 0 100% 140 <0016 5 2 000 136 Ibs 0 0 Ibs <br /> 8122195 718/95-8122195 80 45 0 100% 1200 41 359 096 1618 lbs 431 Ibs <br /> 9/19/95 8122/95-9119195 100 28 0 100% 480 <0 016 180 0 00 503 Ibs 0 0 Ibs <br /> 10/23/95 9119195-10123195 100 34 0 100% 240 <0 016 9 0 000 306 lbs 0 0 lbs <br /> 11/15/95 10123195-11115195 100 23 0 100% 170 4 7 6 4 000 146 Ibs 0 0 Ibs <br /> 12/15/95 a 11115195-12/15/95 100 30 6 80% 31 -- 12 — 28 lbs — lbs <br /> 1126196 12115195-1126/96 100 42 35 17% 117 — 44 — 31 Ibs Ibs <br /> 2114196 1/26196-2/14/96 100 19 0 100% 916 — 343 — 652 Ibs - Ibs <br /> 3/27/96 b 2114/96-3127196 100 42 33 21% 10 — 04 -- 3 Ibs — Ibs <br /> 1018196 c 1018196-10118/96 100 10 0 100% 33 -- 12 — 12 Ibs lbs <br /> i <br /> Totals and averages 9116197-12131197 -- 106 106 0% -- -- — -- 00 lbs 0 0 lbs <br /> for reporting period 00 gals 0 0 gals <br /> Totals and averages 1111195-12131197 95 1007 669 34% 341 8 4 119 015 4815 lbs 604 lbs <br /> cumulative <br /> 777 gals 8 3 gals <br /> Sample calculations <br /> Mass extraction rate calculation <br /> Ibs/day=('Y ppm/1,000,000) ("0"ft"31min)"('M W Ib4b-mol)'(60 min/hr)'(24 hrlday)'(Ib-mo1/379 5 ft"3) <br /> where 'X is influent concentration in ppm <br /> "0'is the average flow rate in W3/min <br /> M W"is the molecular weight in Ib/lb-mol (100 2 for TPH-G,78 1 for benzene) <br /> Gallons removal calculation <br /> gal removed=lbs/density,density in Ib/gal(density for TPH-G is 6 2,benzene is 7 32) <br /> Notes <br /> (a)Beginning 12115195,samples analyzed in the field with a portable Photo Ionization Dectector(PID) <br /> (b)System off from 3127196 through 10/8/96 due to high groundwater levels <br /> (c)System turned off on 10/18/96 due to low influent concentrations <br /> =Not available <br /> 7G600-019-0110&M Tables As June 30,1998 <br />