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Mr.john Johnson <br /> Project 113-25.02,December 16, 7993 <br /> - - <br /> Table 2 -- Laboratory Analysis Results page 4 <br /> Cheaper! Store #37 <br /> 15 East Grant Line Road, Tracy, Califorrua <br /> Groundwater Samples Collected on November 30, 1993 <br />' <br /> Sample TPH-g Benzene Toluene Ethylbenzene Xylenes <br /> ._X <br /> M W-1 160 ND<O 5 ND<0.5 6.4 0.57 <br /> MW-2- ND<50 ND<0 5 ND<0.5 NU<0.5 ND<0.5 <br /> MW-3 ND<50 ND<O 5 ND<0.5 Nle<0.5 ND<0,5 <br /> MW-4 41,000 21200 920 240 61800 <br /> TPH-gand BTEX are in parts per billion, or IAg/L. ND = Not Detected <br /> The sample results show detectable amounts of petroleum hydrocarbons and all <br /> constituents in MW-4, and detectable amounts of TT'H-g, Ethylbenzene and Xylenes <br /> in MW-1. <br />' The State Water Quality Control Boardubllshed the LUFT Fteld <br /> P Manual (10/89 <br /> page 8), whack lists Maximum Contaminant Levels, or regulatory threshold for the <br /> substance. The substances are Benzene, Xylene and Ethylbenzene. Toluene has a <br /> Department of Health Services Action Level, These are compared with the MW-1 <br /> and MW-3 results below, <br /> p <br /> Com arson of Sample Results With <br /> P <br /> RWQCB Maximum Contaminant Levels (MCL) <br /> and DOHS Action Level (AL) <br /> Sample Tfli-g Benzene Toluene t enzene Xylenes <br />' MW-1 360 ND<0.5 ND<0.5 64 0.57 <br /> MW-4 47,(X1() 2,200 920 240 61800 <br />' MCL (RWQCB) NA 1.0 NA 680.0 I,750,0 <br /> AL (DOHS) NA NA 100.0 NA NA <br />' TPH and BTEX are in parts per billion or IAS/L NA = Not Applicable.Concentrations above the action <br /> levels, are in boldface, <br /> 49 <br />' Parker Mviroameatal services, 190 East 7th Street, Pittsburg, CA 94555-2317 <br /> Phone (510) 439.3024 Fax (510) 439-2566 <br />