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TABLE 3 <br /> VAPOR REMEDIATION SYSTEM STATUS <br /> THRIFTY OIL STATION#171, STOCKTON, CA <br /> Hour meter Hours of Vapor Inlet TPHg TPHg removed i Cumulative TPHg Mass Volume <br /> Date reading Operation Flow Rate Concentration within period TPHg removed Removal Rate Removed <br /> (hrs)' (hrs) (cfm) (ppmv) (ug1L) (lbs) (lbs) (lbsthr) (gallons) Remarks <br /> I <br /> 11/25103 11 175 0 4 760 133 283 21 1560 Restarted <br /> 12102103 11 318 143 147 4 760 37422 133 657 262 21 2154 <br /> 12/08/03 11 462 144 140 663 2 710 288 65 133 946 200 21 2612 <br /> 12/15/03 11 630 168 143 2 710 24094 134 187 143 21 2995 <br /> I — <br /> 12/22/03 11 800 170 143 2 710 246 39 134 433 145 213386 <br /> 12/29/03 11 968 168 147 2 710 24690 134 680 147 21 3778 <br /> 01/05/04 12 136 168 143 2 710 24690 I 134 927 147 21 417 0 <br /> 01/12104 12,305 169 146 1 010 4 120 .31190 j 135 239 185 21 466 5 <br /> 01/19104 12 472 167 143 I 4 120 371 B4T 135 611 223 21 525 5 <br /> 02/02104 12 760 288 141 4 120 630 16 136 241 219 21 6255 Found system off knockout switch shut down system restarted <br /> 02109!04 12 926 I 166 141 4 120 36066 136 602 217 21 682 8 Shut down system WOWS <br /> 02/16/04 12 928 i 20 141 I 4 120 4 35 1 136 606 217 21 683 5 Restarted <br /> 02/23/04 12 988 60 146 528 2 160 101 11 1 136 707 169 21 699 5 Found system off over;oaded switch shut down system restarted <br /> 03/01/04 13 123 135 142 2 160 15704 136 864 1 16 21 7245 Found system down powef on&belt broken restarted <br /> 03/08/04 13 286 163 143 2160, 187 64 137 052 1 15 21 7542 <br /> 03/15/04 13 450 164 147 3681 1510, 16320 137 215 100 21 7801 <br /> 03122!04 13 458 8 141 1 510 651 137 221 081 21 781 2 Found system off overload switch stun down system restarted <br /> 03/30104 13 633 175 143 I 1 510 14034 137 362 080, 21 11034 <br /> Total hours of operation 28 473 <br /> NOTE Inlet Concentration obtained from laboratory analytical results and assumed the same until subsequent sampling event <br /> Volume of hydrocarbons removed calculation assumes gasoline density of 6 3 <br /> In February 2002 this table was corrected due to some formula errors to the hydrocarbon removal columns Older versions of this table may have different numbers <br /> 171 ves Page 7 of 7 417104 <br />