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TabPA-1 •2 of 2 <br /> Soil Vapor Extraction System Performance Data <br /> ARCO Service Station#2093 <br /> 3425 Tracy Boulevard,Tracy,California <br /> TPH as Gasoline Renzen <br /> FLD Influent Influent <br /> Hour Meter Blower Average Concen- Removal Net Removed Concen- Removal Net Removed <br /> Sample Date Reading Vacuum Flow Rate Influent Effluent tration Rate Removed to Date tration Rate Removed to Date <br /> ID Sampled (hours) ("H20) (scfm) (ppmv) (ppmv) (ppmv) (lbs/day) (pounds) (pounds) (ppmv) (lbs/day) (pounds) (pounds) <br /> INFL 12/31/97 7 847 a 40 65 180 95 180 47 362 2,748 -- — — -- <br /> INFL 5/28198 7,847 60 40 4,000 0 390 62 00 2,748 180 02 00 0 <br /> INFL 6111198 8,143 50 105 650 30 650 273 2068 2,955 -- 06 50 50 <br /> INFL 718198 8,444 b — — — -- — 00 00 2,955 — 00 00 50 <br /> INFL 10112/98 8,444 c 50 65 600 0 148 04 1741 3,129 02 00 37 88 <br /> INFL 1119198 8 499 50 29 1,890 382 937 1 1 1 2 3,131 ND 00 00 88 <br /> INFL 12/21/98 8,690 40 29 0 0 35 04 41 3,135 ND 00 00 88 <br /> REPORTING PERIOD 10/12/98 to 12/21/98 <br /> TOTAL POUNDS REMOVED 3,1347 88 <br /> TOTAL GALLONS REMOVED 6139 12 <br /> PERIOD POUNDS REMOVED 1795 37 <br /> PERIOD GALLONS REMOVED 294 0S <br /> PERIOD AVG FLOW RATE 41 <br /> PERIOD PERCENT OPERATIONAL 15% <br /> scfm =Standard cubic feet per minute NS=Not sampled <br /> lbs =Pounds a Prior to April 1998 all data was collected and reproted by Brown and Caldwell <br /> — =Not available or not applicable b SVE system left off on 718198 <br /> ND =Non-detectable above detection limit c SVE system restarted on 10/12/98 <br /> ppmv =Parts per million by volume <br /> TPH =Total petroleum hydrocarbons Density of benzene=7 34 pounds per gallon <br /> Density of gasoline=6 1 pounds per gallon <br /> 7G600-026-01400&M Tables xls1TABLE 1 March 8, 1999 <br />