Laserfiche WebLink
' Environmental <br /> Mr Harlin Knoll Resources <br /> 30 December 2005 Management <br /> 01' Page 2 <br />' Former Tank 1 Area Location <br />' Hydrocarbon concentrations at MW-1 were within the range of historical <br /> values, while concentrations at MW-4 were below prior detected <br /> concentrations (Figure 1) Benzene concentration at MW-4 has been <br />' reduced to a non-detectable level Ground water concentration trends <br /> within MW-1 and MW-4 are shown in Figures 3 and 4 <br /> Former Tank 2 Location <br />' MW-2 previously contained elevated concentrations of ethylbenzene and <br /> total xylenes, which have been reduced to non-detectable levels (Figure 2) <br /> Monitoring well MW-6, located adjacent to the former fuel tank pit, <br /> contained concentrations of TPH and benzene below prior detected levels <br /> Concentrations of toluene, ethylbenzene, and total xylenes increased from <br /> the prior sampling event but were within the range of historical values <br /> Ground water concentration trends within MW-2 and MW-6 are shown in <br /> Figures 5 and 6, respectively <br /> la <br /> CONCLUSIONS <br />' The results of the most recentound water sampling event indicate that <br /> �' P g <br /> the sampled parameters in all wells have shown progressive decreases or <br /> stabilization Based on the data trends observed, Heinz would like to <br /> further discuss potential case closure strategies with the County <br />' if you have any questions, please call me at (925) 946-0455 <br /> Sincerely, <br /> Brian S Bjorklund, R G <br /> Project Manager <br /> cc Mr Scott M Krall, Heinz -Pittsburgh, PA <br /> Mr Marty Hartzel, CVRWCB <br /> Ms Margaret Lagorio, SJCEHD <br />' Mr James F Davenport, The Cranbrook Group <br />