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• TABLE KEY <br /> STANDARD ABREVIATIONS <br /> -- = not analyzed, measured, or collected <br /> LPH = hqutd-pbase hydrocarbons <br /> Trace = less than 0 01 foot of LPH in well <br /> µg11 = micrograms per liter(approx equivalent to parts per billion, ppb) <br /> mg/1 = milligrams per liter(approx. equivalent to parts per million,ppm) <br /> ND G = not detected at or above laboratory detection limit <br /> TOC = top of casing (surveyed reference elevation) <br /> ANALYTES <br /> BTEX = benzene, toluene, ethylbenzene, and(total)xylenes <br /> DIPE = di-isopropyl ether <br /> ETBE = ethyl tertiary butyl ether <br /> MTBE = methyl tertiary butyl ether <br /> PCB = polychlonnated biphenyls <br /> PCE = tetrachloroethene <br /> TBA = tertiary butyl alcohol <br /> TCA = trichloroethane <br /> TCE = trichloroethene <br /> TPH-G = total petroleum hydrocarbons with gasoline distinction <br /> TPH-D = total petroleum hydrocarbons with diesel distinction <br /> TPPH = total purgeable petroleum hydrocarbons <br /> TRPH = total recoverable petroleum hydrocarbons <br /> TAME = tertiary amyl methyl ether <br /> • 1,1-DCA = 1,1-dichloroetime <br /> 1,2-DCA 1,2-<hchloroethane(same as EDC, ethylene di(,Wonde) <br /> 1,1-DCE = 1,1-dichloroethene <br /> 1,2-DCE = 1,2-dichloroethene(cis-and trans-) <br /> NOTES <br /> 1 Elevations are in feet above mean sea level Depths are in feet below surveyed top-of-casing <br /> 2 Groundwater elevations for wells with LPH are calculated as Surface Elevation- Measured Depth to Water + <br /> (Dp_x LPH Thickness), where Dp is the density of the LPH, if known A value of 0 75 is used for gasoline and <br /> when the density is not known A value of 0 83 is used for diesel <br /> 3 Wells with LPH are generally not sampled for laboratory analysis (see General Field Procedures) <br /> 4 Comments shown on tables are general Additional explanations may be included in field notes and laboratory <br /> reports, both of which are included as part of this report <br /> 5 A ".l" flag indicates that a reported analytical result is an estimated concentration value between the method <br /> detection Iimit(MDL) and the practical quantification limit(PQL) specified by the laboratory <br /> 6 Other laboratory flags (qualifiers)may have been reported See the official laboratory report(attached) for a <br /> complete list of laboratory flags <br /> 7 Concentration graphs based on tables (presented following Figures) show non-detect results prior to the Second <br /> Quarter 2000 plotted at fixed values for graphical display Non-detect results reported since that time are plotted at <br /> reporting limits stated in the official laboratory report <br /> 8 Groundwater vs Time graphs may be corrected for apparent level changes due to resurvey <br /> 9 Historical data has been validated for this report Values presented in the following tables supercede those from <br /> previous reports <br /> REFERENCE <br /> TRC began groundwater monitoring and sampling for 76 Station 5886 in October 2003 Historical data compiled prior to that time <br /> were provided by Gettler-Ryan Inc <br />