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TABLE 3 VAPOR REMEDIATION SYSTEM STATUS THRIFTY OIL STATION/171, STOCKTON, CA Hour meter Hours at Vapor Inlet TPHg TPHg removed Cumulative TPHg Mass Volume Date reading bperwhon Flow Rate Concentration within period I TPHg removed Removal Rate Removed (hrs)' (hrs) (Cfm) (ppmv) (ugfL) (lbs) l (lbs) (lbsthr) (gallons) Remarks 09/11/01 2208 40 194 1 740 5050 57 593 1 26 9 145 8 — 09118101 2 372 164 195 1 1 740 20758 57 801 127 9 174 7 09125101 2 416 1 44 195 1 740 55 84 57 857 1 27 9 183 6 System shut down for replacement of temperature controller 10115101 2 416 1 0 171 1 1 740 57 657 9 183 6 Restarted 10/16101 2 440 24 171 1 540 6 800 6554 57 922 273 9 1940 10123101 2 566 126 171 6 800 — 54796 58 470 435 9 281 0 10!30101 2648 82 171 6 800 356 61 58 827 435 9 337 6 11/02101 2 716 68 171 6 800 29572 59 122 435 9 384 5 Shut down system for OwS 11109101 2 716 _ 0 6 800 59 122 9 384 5 Restarted after OwS 11113/01 2 814 98 171 6 800 42519 59 549 435 9 452 1 - 11!20701 2 831 i7 171 6 800 7393 59 622 435 9 463 9 Shut down system for motor blower mplacemem 11123/01 2 831 0 6 800 59 622 - 9 463 9 Restarted 11/27/01 2 843 12 171 6 800 — 52 19 59 675 435 9 472 2 Found system off broken blower bell restarted 12111101 3 102 259 171 451 1 990 72799 60 403 281 9 587 7 12118101 — 3 270 168 171 I 1 990 21381 r 60 616 1 27 9 621 7 12!26!01 3 450 190 175 1990 241 81 60 85B 1 27 9 660 0 01102!02 3 631 171 171 1 990 21763 k 61 078 1 27 9 694 6 - — 01/08/02 — 3 768 137 172 1 990 174 87 61 251 128 9 722 3 01/15102 3 840 72 171 483 2 130 9513 61 346 — 132 9 737 4 Knockout switch shut down vES restaged 01122102 3 957 117 173 2 130 16031 61 506 137 9 762 9 Knockout swacrr shut dawn VES restaged 02107/02 4 223 266 170 591 2 610 40436 I 61 911 152 9 827 1 Knockout swath shut down VES restarted 02/12/02 4 291 68 171 1 2 610 11317 62 024 1 66 9 B45 0 Knockout swrtch shut down VES not restarted for GWS Restarted on V13 02119102 4 307 16 171 2 610 2671 62 050 1 67 9 B49 3 Knockout switch shut down VES restarted 02/26/02 4 445 138 170 464 2050 20504 62 255 149 9 881 B Knockout switch shutdown VES restaged 03/05102 4 613 168 170 2050 Y 21897 62 474 130 9 916 6 T 03/12/02 4 776 163 172 4331 1 910 206 41 i 62 681 1 27 9 9493 —T - 03/14/02 4 830 54 172 li 1910 6635 62 747 123 9 959 9 Shutdown system for pump test 03/19/02 4 0 174 1910 62 747 9 959 9 Restarted atter pump test and changed hour meter 03126102 162 158 170 1 910 19413 1 62 941 4 123 09907 04102102 320 158 172 — 1 910 19300 63 134 1 22 10 021 3 04!49102 324 4 172 1 910 491 63 139 1 23 10 022 1 Knockout smch shut down VES restarted 04/16/02 329 T 5 172 1 910 614 _ 63 145 1 23 10 023 1 Found system off power from el®dnc bo.o8 171ves Page 3 of 7 6/48/04