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VAPOR EXTRACTION SYSTEM OPERATION <br /> 7-ELEVEN STORE <br /> 9110 THORNTON AVE. <br /> ST•OCKTON,CA <br /> Table 5. <br /> SKg C CLIA TUBE ANALYSES OF VES ELLS <br /> Well TPH as Gas Benzene Toluene Ethyl Benzene Total Xylenes <br /> mg/m3 mg/m3 mg/m3 mg/m3 mg/m3 <br /> RW-1 220 N.D. 9.0 N.D. 1.5 <br /> MW-1 4,800 21 14 130 590 <br /> MW-3 1,500 3.5 fib 10 31 <br /> MW-4 120 N.D. 3.2 N.D. 1.19 <br /> VP-1 10 N.D. N.D. N.D. <br /> VP-2 340 1.2 18 2.7 i33 <br /> VP-3 N.D. N.D. N.D. N.D. N.D. <br /> VP-410 N.D.. N.D. N.D. N.D. <br /> All samples were obtained on January 5, 1990 by sampling the regenerative blower <br /> exhaust during individual isolation of each well on the blower. <br /> N.D. = not detected. <br /> 3 <br /> f <br /> VAPOR EXTRACTION TECHNOLOGY. INC. <br />