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Page 108 <br /> Principally associated with , <br /> the discovery of more extensive gas and leachate generation from the landfill <br /> than originally understood at the time the 1994.EIR was completed. There are some other minor changes <br /> associated with changes in regulations and requirements but the substantive impacts are all associated <br /> f with the maintaining control over and properly mitigating landfill as onsite and <br /> migrating offsite, g the leachate plume <br /> f <br /> The principal new issues and impacts that emerged since the 1994 EIR include the 1996.discovery of free <br /> flowing leachate along a part of the north face of the landfill, the 1997 finding that the offsite <br /> groundwater plume had impacted two private wells with PCE reported above drinking water standards, <br /> and the 1998 discovery that gas emissions from portions of the landfill exceeded <br /> concentrations. These impacts were mitigated through a series of actions with associated egulatory <br /> oversight and are being issible <br /> continually evaluated so that mitigation measures can be <br /> further <br /> modified as <br /> appropriate. <br /> } <br /> 3 } <br /> I <br /> j <br />� x <br /> GRASSETTI ENVIRONMENTAL CONSULTING <br />