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agricultural and domesi tc re two zooms, <br /> Lary wells we installed In those tw zo , and in some camel, dinquar zones <br /> in the area of Sharpe. <br /> The vadose zone benemb SHADr001 & 4108 a primarily composed of silty sandy day, silt sandy and Any <br /> clay, and sandy they. Depths to groundwater measured nt SHAD003i & 4108 ranged from approximately <br /> 18 to 22 feet Ens during 2014 and 2015 groundwater monitoring. <br /> 1.3 Previous Investigations <br /> n 2009, well cluster MW505 was installed W monitor carbon tetmchlodde, tetracnlorcetnene, and TCk <br /> plumes In the A, B, C,and 0 Zones and the CD transition, If present. Concentrations a carbon tetach lodde, <br /> andTCk and odgerVOCs haw consistently been below their resnecTrve aquifer deanp <br /> levels in samples collected from MW505 since the first sampling (Man quarter 2010 I10101) event at the <br /> cluster. However, a MWSOSC, a slight increase observedand <br /> SC have ranged from 3.2 to 4.3 micrograms per. liter man 3032 <br /> through 3015n below ithe aquifer common level of 5.0 microgram per liter (Homes 3 and 4, respectively). <br /> The statistically significant increasing trend in TICE concentrations In MW505C may Indicate there is a TCk <br /> ass t hat our current conceptual hydrogeologic model does not account for,which may lengthen ckanu p <br /> increasingtimes. The TM crancendural in <br /> groundwater chaacterizationn of the site is harder! to called sufficient data to determine recommendation e the Nilex t of <br /> contamination and reach a decision on the mail forfuture activities at the site. The characterization of <br /> the s to will also assessw1wher existing cencentortlom of chemicals of crncem in gmuntlwa[erare aspM1in <br /> acceptable levels that are protective of human health and the environment or are at levels that may pose <br /> a risk human health and the environment. <br /> a3,mo Emw,wvmenrd, lrc. 3 <br />