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s <br /> TABLE 4 <br /> SUMMARY OF MASS EXTRACTION RATES <br /> THROUGH VAPOR EXTRACTION <br /> MOORS PETROLEUM <br /> 1399 E.Yosemite Blvd. <br /> Manteca,CA <br /> DATE FLOW HOURS ANALYTICAL RESULTS EXTRACTION RATES CUMULATIVE <br /> RATE OPERATED* TPHg Benzene TPHg Benzene TPHg Benzene 40TES <br /> (CFM) (ugll) (uglt) (Ib/da ) (lb/da ) (lb) (lb) <br /> 513/93 360 210 2900 10 94 0 032 82 028 <br /> 5/27/93 ISO 466 2300 NM 31 NA 149 NA <br /> 8112193 270 571 1300 37 32 00090 163 059 <br /> 8116193 420 664 720 28 27 0 011 174 063 <br /> 8/19/93 260 721 1300 37 30 0 0086 181 065 <br /> 9/28/93 290 982 260 ND 068 ND 200 070 <br /> 1217194 21 6 18 2 140 2 2 0 27 L0043 200 070 <br /> 02/24/95 161 10840 160 ND 023 0 211 080 <br /> 07/05/95 510 NM** ND ND 0 0 211 080 <br /> 07/25/95 920 NM** ND ND 0 0 211 0 80 <br /> * = Refers to hours system operated since last air sample <br /> ** = Hour meter not Installed on carbon system <br /> NM = Not measured <br /> ND = Below laboratory detection limits <br /> NOTE 1993 vapor extraction work performed by Aegis <br /> I <br /> I <br /> APEX ENVIROTECH,INC <br /> SECOND QUARTER 1996 <br /> ERA02 006 <br />