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F <br /> [fir i�d -., IIYZ Fq•sF�.., �_ _.. '. .. <br /> i <br /> A <br /> 2020899.7004 <br /> Lanirnersville School DistriCt 5 <br /> July 16, 1990 <br /> 1987 included installation of five monitoring wells, groundwater monitoring, and collection of soil and <br /> groundwater samples which were analyzed for benzene,toluene,ethylbenzene,and xylenes(BTEX),he <br /> total petroleum hydrocarbons-as-gasoline (TPH-G). No petroleum hydrocart)ons were detected in <br /> anal+'zed soil samples, but dissolved petroleum hydrocarbons were fourd in groundwater samples , <br /> collected from ail five monitoring wells,with TPH-G concentrations ranging from 32.5 parts per billion(ppb) <br /> in PAW-4 to 6,958 ppb in MW-2(Table 1). The wellhead elevations were surveyed to an arbitrary datum <br /> of 1o0 feet. Monitoring data collected in June 1987 indicated a northeastward groundwater flow direction, <br /> TABLE 1 <br /> LABORATORY ANALYSIS OF GROUNDWATER <br /> (in ppb) <br /> June 22, 1987 <br /> Well Ethylbenzene X 1y enes TPH-G <br /> iD Benzene Toluene <br /> 493.6 296.8 1132.0 4923.0 <br /> fytry_1 664.0 6958.fl • <br /> MW-2 67.8 407.1 535.1 2693.0 <br /> _.. MW-3 4.5 4.8 <br /> 2.5 20.7 200.9 <br /> MW-4 1.3 4.8 <br /> 0.5 5.1 32.5 <br /> MW-5 4.9 3.5 <br /> 2.7 4.2 33.3 <br /> Another round of groundwater monitoring and sampling was conducted on November 12,1987. <br /> The water samples were analyzed for BTEX and TPH-G. Results of the analyses are summarized in Table <br /> 2. <br /> GROUNDWATER <br /> TECHNOLOGY,INC. <br />