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TABLE 3 <br /> VAPOR REMEDIATION SYSTEM STATUS <br /> THRIFTY OIL STATION }171, STOCKTON, CA <br /> Hour meter I Hours of Vapor Inlet TPHg TPHg removed Cumulative TPHg Mass Volume <br /> Date reading Operation Flow Rate Concentration within period TPHg removed Removal Rate Removed <br /> (hrs)' (hrs) (dm) (ppmv) (ug/L) (lbs) (Ibs) (lbs/hr) (gallons) Remarks <br /> 02/19/03 5,658 0 8,890 - 125,380 - 19,901 6 Restarted <br /> 02/25/03 5,763 105 172 8,890 60047 125,980 572 19,9969 <br /> 03/04/03 5,928 165 171 8,890 94085 126,921 570 20,146 2 <br /> 03/11/03 6,038 110 - 8,890 62541 127,547 569 20,2455 system shut down for repair of parts <br /> 03/12/03 6,040 2 170 1,310 5,380 907 127,556 454 20.2469 Restarted <br /> 03118/03 6 184 144 170 5 380 49257 128 048 342 20 325 1 System off to=8!03 <br /> I <br /> Total hours of operation 21,024 <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 in the hydrocarbon removal columns Older versions of this table may have different numbers <br /> 171ves Page 7 of 7 411103 <br />