Laserfiche WebLink
TABLE 2-Continued <br /> GROUND WATER SAMPLE ANALYTICAL RESULTS <br /> Concentrations in micrograms per liter(µg/L) <br /> Former Exxon Service Station No 7-3708 <br /> 2705 Country Club Boulevard <br /> Stockton,California <br /> Monitoring Ethyl- Total TPPH as <br /> Well Benzene Toluene benzene xylenes gasoline MTBE <br /> MW-7 05/31/94 <0 5 <0 5 <0 5 <0 5 <50 NA <br /> 08/30/94a <0 5 <0 5 <0 5 <0 5 <50 NA <br /> 11/22/94a <0 5 <0 5 <0 5 <0 5 <50 NA <br /> 01/12/95a <0 5 <0 5 <0 5 <0 5 <50 NA <br /> 03/31/95 NS NS NS NS NS NS <br /> 04/05/95 <0 5 <0 5 <0 5 <0 5 <50 NA <br /> 07/14/95 <0 5 <0 5 <0 5 <0 5 <50 NA <br /> 10/05/95 <0 5 <0 5 <0 5 <0 5 <50 NA <br /> 04/02/96 NS NS NS NS NS NS <br /> 07/31/96 <0 5 <0 5 <0 5 <0 5 <50 NA <br /> 10/23/96 <0 5 <0 5 <0 5 <0 5 <50 <5 0 <br /> 02/07/97 <0 5 <0 5 <0 5 <0 5 <50 NA <br /> MW-8 05/31/94 <0 5 <0 5 <0 5 <0 5 <50 NA <br /> 08/30/94" <0 5 <0 5 <0 5 <0 5 <50 NA <br /> 11/22/94a <0 5 <0 5 <0 5 <0 5 <50 NA <br /> 01/12/95" <0 5 <0 5 <0 5 <0 5 <50 NA <br /> 03/31/95 NS NS NS NS NS NS <br /> 04/05/95 <0 5 <0 5 <0 5 <0 5 <50 NA <br /> 07/14/95 <0 5 <0 5 <0 5 <0 5 <50 NA <br /> 10/05/95 <0 5 <0 5 <0 5 <0 5 <50 NA <br /> 04/02/96 <0 5 <0 5 <0 5 <0 5 <50 NA <br /> 07/31/96 <0 5 <0 5 <0 5 <0 5 <50 NA <br /> 10/23/96 <0 5 <0 5 <0 5 <0 5 <50 <5 0 <br /> 02/07/97 <0 5 <0 5 <0 5 <0 5 <50 NA <br /> a Total volatile hydrocarbons <br /> e Result is an estimated value because it exceeds the lmear range <br /> Atypical chromatogram with unidentified peak(s) within the range of gasoline hydrocarbons Chlorinated hydrocarbons <br /> are suspected Aground water sample collected from monitoring well MW-6 on April 17, 1992,contained chlorobenzene <br /> and 1,2-dichlorobenzene <br /> d Atypical chromatogram Analysts of this sample by EPA Method 624 on Apnl 17, 1992(past EPA recommended holding <br /> time),was positive for the following chlorinated hydrocarbons vmylchlonde,cis-l,2-dichloroethene,trichloroethane and <br /> tetiachlorethane These peaks resulted in a positive fuel hydrocarbon result. <br /> Atypical chromatogram Four unknown peaks were observed causing a positive fuel hydrocarbon result. Chlorinated <br /> hydrocarbons are suspected <br /> e Atypical chromatogram An unknown peak was observed between MTBE and benzene Chlorinated hydrocarbons are <br /> suspected <br /> a Atypical chromatogram Analysis of this sample by EPA Method 624 on April 17, 1992(past EPA recommended holding <br /> time)was positive for the following chlorinated hydrocarbons chlorobenzene and 1,2-dichlorobenzene <br /> TPPH = Total purgeable petroleum hydrocarbons by DHS LUFT Method or total petroleum hydrocarbons <br /> . (TPH)by EPA Method 8015 Modified <br /> J <br /> MTBE Methyl tertiary butyl ether <br /> NA = Not analyzed <br /> NS = Not sampled <br /> LRP005 809 <br />