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Table 5 <br /> Groundwater Monitoring Results-Oxygenate Analyses <br /> Del Monte Disco Property <br /> { Stockton,California <br /> Concentration(u <br /> EPA Di-isopropyl Ethyl-cert- Cert-Amyl <br /> i <br /> Well Sample Dale Method MTBE Dllulion ler[-Butanol ether bit! 1 ether Meth 1 ether <br /> Method 8260M <br /> SVE- <br /> SOUTH 04117/1997 e015fMO EM 1-100 NA NA NA NA <br /> 6112197 9240 <5 I:i NA NA NA NA <br /> 08/[211997 8260M <100 1:20 NA <100 <100 <100 <br /> 04117/1998 9260M <40 1:4 NA <20 <20 120 <br /> 05/21/1998 8260M NA NA J111M NA NA NA <br /> } <br /> 07/23/1998 9260M <20 1:1 <20 <5 <5 <5 <br /> 11/11/1998 8260M <20 1:4 1100 <20 <20 <20 <br /> 02111/1999 8260M <5 1:1 <50 <5 <5 <5 <br /> 07/1611999 8260M <5 1:10 <50 <5 <5 <5 <br /> 11/0$/1999 8260M <5 110 <50 <5 <5 <5 <br /> 03/29/2000 8260B <5 1:1 <20 <5 <5 <5 <br /> 5151000 8260B 1 <5 1:1 1 <20 1 <5 <5 <5 <br /> Notes: <br /> <0.5: Below Detection limit of 0.5 ugll <br /> •: Sample collected by minimum aeration technique <br /> **: Not Confirmed by GC1MS <br /> Samples collected on 6112197 were analyzed using EPA Method 8240. <br /> '3/19199 MW-DIS-2 re-sampled on this date and analyzed by EPA Method 8015/8020.Detection not confirmed by GC1MS. <br /> MTBE was not detected in the original 2/11199 sample(analyzed by EPA Method 801518020 and confirmed by <br /> GC/MS Method 8260 <br /> 11 <br /> I <br /> I <br /> I <br /> { <br /> { <br /> 1 <br /> Gdato5-00.xIs Pegs 4 of 4 07/05/2000 <br /> 1 <br />