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Table 6 Sod Vapor Extraction System Performance Data 7 Eleven Facility 19976 1399 Main Street Manteca California SYSTEM READINGS TPH as Gasoline Benzene MtBE Influent Data Influent Influent MTBE Run Influent Sumer Blower Well Field FID Concen- Net Concen- Net Concen- Net Sample Date Time Time Temperature Temperature Vacuum Flow Rate Influent tration Removed tration Removed tration Removed ID (hours) (Degrees F) (Degrees F) (Inches H2O) (sofm) (ppmv) (ppmv) (Ibs) (ppmv) (lbs) (ppmv) (lbs) Extraction Well 6/2/2004 1250 0 94 1 567 41 36 — Horizontal Tank Pit Wells INF 06102/04 1315 04 98 1 583 71 41 25 <5 00 <0 050 <010 INF 06/02/04 1400 12 98 1 592 69 50 300 <5 00 000 <0 050 Goo <010 000 INF 06102/04 1600 22 97 1,552 62 52 25 12 001 <0 050 000 <010 0 00 Horizontal Tank Pit Wells 06/02/04 1515 00 98 1 544 71 48 4 SP-1' 06/02/04 1615 10 97 1534 69 46 4 SP-1` 06102104 1630 00 97 1 540 68 50 100 Horizontal Tank Pit Wells INF 06/03/04 7 30 150 67 1 579 81 65 40 <5 00 007 <0 050 000 <010 0 00 Horizontal Tank Pit Wells 06/03/04 745 00 78 1593 98 75 20 SP-1A" INF 06/03/04 1145 40 89 1 613 94 55 30 <5 00 002 <0 050 000 <010 0 00 SP-1A' 11/23/04 930 00 49 1,828 58 49 500 MW-2 INF 11/23/04 1030 10 53 1 857 64 48 600 4300 032 10 000 010 000 MW-2 INF 11/23/04 1430 50 58 1 648 70 46 1 100 5000 147 064 000 012 000 MW-2 PERIOD POUNDS REMOVED 179 000 000 TOTAL POUNDS REMOVED 1 88 0 00 000 scfm =Standard cubic feet per minute lbs =Pounds SP-1 =Shallow sparge well ppmv =Parts per million by volume SP-1A =Deep sparge well TPH =Total petroleum hydrocarbons H2O =Water "=Horizontal tank pit wells used to facilitate extraction on well SPA Flow rates obtained during extraction FID =Flame Ionization Detector are from horizontal well in tank pit INF =Influent F =Fahrenheit Laboratory reporting limit used in calculations for non-detect laboratory results 19976 Current SVE Paragon xis Page 1 of 1