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TABLE 7 SUMMARY OF SOIL VAPOR EXTRACTION DATA Compass Group USA,Inc 1500 Shaw Road Stockton, Cahforma Sample Flow FID FID Benzene Benzene TPH TPA Recovery Time Sample Rate Reading Recovery Results Recovery Results Recovery Date (hr.mm) Name (scfm) (pp mv) (lbs/hr) (mg/m) (lbs/hr) (mg/m3) (lbs/hr) 02/27/02 0930 Recovered Vapors @ VW-1 0 289 --- NA --- NA --- 1000 to " It 28 800 036 NA --- NA --- 1030 ilTo it 28 786 036 NA --- NA --- 1100 „ IT to if 39 854 054 NA --- NA --- 1130 to " to If 39 802 051 NA --- NA --- 1200 " IT It 11 39 818 052 NA --- NA --- 12 30 to To If 11 48 810 0 63 NA --- NA --- 13 00 to To To ,1 48 715 056 NA (BTEX 8,345) 1 500 13 30 of To it 48 857 0 67 85 00153 62,000 1115 1400 To It it it 48 696 0 54 NA --- NA --- 1430 Recovered Vapors @ VW-1 0 545 000 NA --- NA --- 3/04/02 0900 Recovered Vapors @ VW-1 0 --- --- NA --- NA --- 09 30 it of " to 28 623 028 NA --- NA --- 1000 to to " to 28 643 029 NA --- NA --- 1030 11 11 It It 39 710 045 NA --- NA --- 1100 IT itIt39 646 041 NA --- NA --- 11 30 IT To It 39 659 042 NA --- NA --- 12 00 " It " It 48 669 052 NA --- NA --- 1230 " It IT 48 672 052 NA --- NA --- 13 00 to It " „ 48 693 054 NA (BTEX 11,160) 2006 1330 It " " 11 48 667 0 52 2,800 0 503 86,000 1546 14 00 to IT If If 48 671 052 NA --- NA --- 1430 to " 11 " 48 679 053 NA --- NA --- 15 00 to to " 11 48 693 054 NA --- NA --- 1530 to to " 11 48 677 053 NA --- NA --- 1600 of to " it 48 709 055 NA --- NA --- 1630 of to " it 48 667 052 NA --- NA --- 1700 Recovered Vapors @ VW-1 48 729 057 1 NA I --- I NA --- NOTES 1 The data presented above was obtained during a mobile dual-phase extraction(MDPE)event conducted at the site 2 FID indicates flame ionuatcon detector 0 A Molecular Weight of 106 for TPH was utilized for the FID recovery calculations 4 NA indicates the vapor sample was not analyzed for the listed constituent 5 The vapor recovery/emissions samples were analyzed utilizing the following methods Benzene — Modified EPA Method SW846-8021B TPH — Modred EPA Method SW846-8015 (extended gas range)