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TABLE 3 <br /> SUMMARY OF GROUNDWATER ANALYTICAL RESULTS(BTEX)' <br /> FORMER VERNALIS PUMP STATION <br /> Vernalis,San Joaquin and Stanislaus Counties,California <br /> Concentrations reported in pg/L <br /> Collection <br /> Method/ <br /> Depth Ethyl- Total <br /> Sample ID (feet b s) Date Collected Benzene Toluene benzene Xylenes <br /> 07/19/05 <0.5 <0.5 <0.5 <0.5 <br /> 10/18/05 <0.5 <0.5 <0.5 <0.5 <br /> 03/16/06 <0.5 <0.5 <0.5 <1.5 <br /> 05/04/06 <0.5 <0.5 <0.5 <1.5 <br /> --- 08/10/069 NS NS NS NS <br /> MW-5 --- 11/07/069 NS NS NS NS <br /> --- 01/24/07 NA NA NA NA <br /> --- 05/08/07 NA NA NA NA <br /> --- 08/06/07 NA NA NA NA <br /> --- 10/29/077 NS NS NS NS <br /> --- 01/29/08 NS NS NS NS <br /> --- 07/17/08 NS NS NS NS <br /> Number of Samples: 42 42 42 42 <br /> No.of Detections: 1 2 0 0 <br /> Max.Detect(µg/L): 0.5 2.0 --- --- <br /> Max.Nondetect(gg/L): <5 1 <5 1 <5 1 <15 <br /> Abbreviations: <br /> bgs=Below ground surface(if applicable) <br /> BTEX=Benzene,toluene,ethylbenzene,and total xylenes <br /> D=Duplicate <br /> EPA=United States Environmental Protection Agency <br /> ggw=Grab groundwater <br /> Geomatrix=Geomatrix Consultants,Inc. <br /> ID=Identification <br /> Lancaster=Lancaster Laboratories,Inc. <br /> NA=Not analyzed <br /> NS=Not sampled <br /> RWQCB=Regional Water Quality Control Board <br /> SAIC=Science Applications International Corporation <br /> SPO=Separate-phase oil <br /> µg/L=Micrograms per liter <br /> <=Denotes analyte not detected at or above the laboratory reporting limit <br /> ---=Not applicable <br /> Notes: <br /> 1. Results above detection limits are in bold. <br /> 2. Samples were collected by Geomatrix and analyzed by Friedman&Bruya for BTEX <br /> using EPA Method 8021 B. <br /> 3. Sample diluted due to matrix effect. Detection limits raised. <br /> 4. Samples were collected by SAIC and analyzed by Lancaster for BTEX using EPA Method 8260B. <br /> 5. Not sampled due to the presence of SPO. <br /> 6. The volume of water in the well was insufficient for sample collection. <br /> 7. Not monitored on a quarterly basis per Central Valley RWQCB. <br /> 8. Well damaged;not monitored/sampled. <br /> 9. Well not accessible. <br /> = � The Benham Companies,LLC <br /> J AWholty Owned SuMidlaryry <br /> Page 3 of 3 fpm sc rosw�r�ns <br />