Contacts
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Groundwater Data AdequacyThe IssueThe IssueSome of the wells completed under the Hydrogeologic Workplan do not provide reliable groundwater quality data. Analysis completed of the impacts of residual drilling fluids on the ability of the groundwater wells in the regional aquifer to provide representative measurements of contaminants. NMED requested a well rehabilitation plan. Since November 2005 LANL has been developing a groundwater data adequacy plan to ensure capability of providing reliable monitoring data. The plan includes a pilot well redevelopment, a plan for well rehabilitation and replacement, and work to complete the data qualification process. Chemical/hydrology testing/modeling will address some issues raised by EPA. The PlanThe PlanLANL will evaluate whether the screens are producing data that are reliable and representative of the intermediate groundwater and regional aquifer. These will be summarized denoting the number of screens that are “good” (i.e., producing reliable data) and number of screens that are potentially impacted by drilling fluids. Of the impacted screens, those that appear to be cleaning up over time and those that are the most problematic will be identified. Then a technical basis for real-time screening of new data for reliability will be determined. ObjectivesGroundwater Objectives
ReportsGroundwater Reports
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