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Symbols&Abbreviations: <br /> —=Not analyzed/applicable/sampled/measured <br /> <=Not detected at or above specified laboratory reporting limit <br /> TOC=Top of casing <br /> DTW=Depth to water in It bgs <br /> NS=Well not surveyed <br /> pg/L=Micrograms per liter <br /> 1,2-DCA=1,2-Dichloroethane <br /> DIPE=Diisopropyl ether <br /> EDB=1,2-Dibromoethane <br /> ETBE=Ethyl tert-butyl ether <br /> MTBE=Methyl tert-butyl ether <br /> TAME=tert-Amyl methyl ether <br /> TBA=tert-Butyl alcohol <br /> MTBE=Methyl tert-butyl ether <br /> GRO/TPHg=Gasoline range organics <br /> Footnotes: <br /> DRY=Well dry during gauging;not sampled • <br /> INA=Well inaccessible;not sampled <br /> N=Identity of contaminant uncertain(hydrocarbon pattern atypical of indicated analyte);see lab report <br /> EXT=Sample was collected immediately following bulk groundwater extraction event <br /> Notes: <br /> The data within this table collected prior to May 2013 was provided to Broadbent&Associates,Inc.by Atlantic Richfield Company and their previous consultants. Broadbent&Associates,Inc.has not verifled the accuracy of <br /> this information. <br /> Beginning in the first quarter 2008,the carbon range for GRO was changed from C4-C32 to C6-C12. <br /> Water level elevation in wells containing LNAPL were adjusted assuming a specific gravity of 0.75 for LNAPL. <br /> Wells MW-11),MW-1S,MW-2S,MW-3S,and MW-4S devloped 7/30/2007. <br /> • <br /> Page 6 of 6 <br />