Annual report of 1991 groundwater monitoring data for the Kerr Hollow Quarry and Chestnut Ridge Sediment Disposal Basin at the Y-12 Plant: Reporting and statistical evaluation of the subsequent year (sixth) data

Oak Ridge Y-12 Plant groundwater protection program management plan

“…In 199 1, a false positive demonstration for both of these sites was submitted to and approved by the TDEC (Lagan 1992). This demonstration confirmed that, in calendar year 1991, the statistically significant changes in total organic carbon, total organic halide, pH, and specific conductance indicated by the required t-test methodology did not represent contaminant releases from either site (McMahon and Mercier 1992). Statistically significant changes in these parameters identified in subsequent analyses also were shown to be false positives consistent with the 1991 data demonstration.…”

Annual report of 1995 groundwater monitoring data for the Kerr Hollow Quarry and Chestnut Ridge Sediment Disposal Basin, Oak Ridge Y-12 Plant, Oak Ridge, Tennessee

“…During CYs 1990CYs ,1991CYs ,1992CYs ,1993CYs , and 1994, the wells at both sites were monitored semiannually for parameters used as indicators of groundwater contamination (Energy Systems 1991;Shevenell and Switek 1992;McMahon and Mercier 1992;Jag0 et al 1993;Jag0 1994;and Jag0 1995). In addition, in CY 1990, the wells were incorporated into the Y-12 Plant Comprehensive Groundwater Monitoring Program.…”

Calendar year 1994 groundwater quality report for the Upper East Fork Poplar Creek Hydrogeologic Regime, Y-12 Plant, Oak Ridge, Tennessee: 1994 groundwater quality data and calculated rate of contaminant migration

“…In addition, wells at the CRSDB were monitored semiannually for parameters establishing groundwater quality. During CYs 1990, and 1993 (Documents Y/TS-724, YES-833, YES-958, and YES-1 172, respectively), the wells at both sites were monitored semiannually for parameters used as indicators of groundwater contamination (Energy Systems 1991; Shevenell and Switek 1992;McMahon and Mercier 1992;Jag0 et al 1993;Jag0 1994).…”