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CAMBRIA <br /> Table 1 Additional Groundwater Analytical Data,Shell-branded Service Station,3725 Tracy Boulevard,Tracy,California <br /> Sample Date Ethanol Tertiary Di-Isopropyl Ethyl Tertiary Butyl Tertiary Amyl Methanol <br /> Butanol Ether Ether Methyl Ether Volatile Organics by EPA 8260 <br /> ID Sampled (ug/L) OWL) (ug/L) (ug/L) (ug/L.) (ug/L) (ug/L) <br /> MW-3A 05 Mar-99 NA NA NA NA NA <1,000 NA <br /> MW-3A 01-Jun-99 NA NA NA NA NA <10,000 NA <br /> MW 3A 30 Aug-99 NA NA NA NA NA <1,000 NA <br /> MW-3A 07-Dec 99 NA NA NA NA NA <1,000 NA <br /> BF 1 24-Oct-01 <500 21 000 <2 0 <2 0 24 <2 500 NA <br /> BF 1 28-Oct-02 NA NA NA NA NA <1,000 NA <br /> RW 30 Jan-03 <500 <50 <2 0 <2 0 <2 0 4,000 None detected <br /> I <br /> Abbreviations and Notes <br /> All analysis performed by EPA Method 8260E <br /> NA=Not Analyzed <br /> <x=Not detected at detection limit of x <br /> (DUP)=Duphcate sample <br /> "=The original wells,MW-I through MW-3 were decommissioned in July 1990 during station reconstruction <br /> They were replaced by MW-IA through MW-3A in August 1990 <br /> I <br /> i <br /> 0813 Page 2 of 2 <br />