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Cy 17(:: <br /> . A S S O C I A T E S I N C <br /> LABORATORY ANALYSIS <br /> Groundwater samples from the monitoring wells were placed on ice and transported under chain- <br /> of custody protocol to State-certified Argon Laboratories Inc (ELAP Cert No 2359) in Ceres, <br /> California for analysis Groundwater samples from wells MW-1, MW-2, and MW-3 were <br /> analyzed for total petroleum hydrocarbons as gasoline (TPHg), benzene, toluene, ethylbenzene, <br /> and xylenes (BTEX) by EPA methods 8015M/8020, oxygenate fuel additives including methyl <br /> tert butyl ether (MTBE), methanol, ethanol, t-butanol (TBA), di-isopropyl-ether (DIPS), ethyl-t- <br /> butyl ether (ETBE), t-amyl methyl ether, 1,2-dichloroethane (1,2-DCA), and 1,2-dibromoethane <br /> (EDB) by EPA method 8260, and dissolved lead by EPA methods 6010/200 7 <br /> ANALYTICAL RESULTS <br /> Wells MW-1 and MW-3 contained none of the target constituents above laboratory method <br /> detection limits TPHg was detected in monitoring well MW-2 at concentrations of 270 <br /> micrograms/liter (ug/L) and benzene was detected in monitoring well MW-2 at concentrations of <br /> 1 3 ug/L Dissolved lead and oxygenate fuel additives including MTBE were not detected in <br /> well MW-2 above the method detection limit <br /> Analytical results for groundwater are summarized in Table 2 Laboratory data sheets and chain <br /> of custody documentation are included as Attachment 2 <br /> RECOMMENDATIONS <br /> Based on the results of the third quarter 2001 monitoring events, ATC recommends No Further <br /> Action in accordance with ATC's Addendum to Closure Summary Report GEMELOS <br /> PROPERTY (Paladin Center) 2421 Holly Drive, Tracy, California, 30 March 1999, AGE-NC <br /> Project No 96-0217 by Advanced GeoEnvironmental, Inc , dated May 3, 2001 Upon <br /> concurrence by PHS/EHD, ATC will submit a workplan for well abandonment activities / <br /> i <br /> w Iwordpro192054192054 0217-2001 qm doe 2 <br />