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Volatile Organic Compound Investigation Results, 300 Area, Hanford Site, Washington.

DE2008936597

Publication Date	2008
Personal Author	Peterson, R. E.; Williams, B. A.; Smith, R. M.
Page Count	78
Abstract	Unexpectedly high concentrations of volatile organic compounds (VOCs) were discovered while drilling in the unconfined aquifer beneath the 300 Area of the Hanford Site during 2006. The discovery involved an interval of sediment within the unconfined aquifer that is not routinely monitored by groundwater sampling. Although VOC contamination in the unconfined aquifer has been identified previously and monitored, the concentrations of newly discovered contamination are much higher, with some new results significantly above the drinking water standards. Four locations were drilled to supplement the information obtained at four locations drilled during the earlier investigation in 2006. The results of the combined drilling indicate that the newly discovered contamination is limited to an interval within the Ringold Formation that contains relatively finer-grained sediment than is found in other portions of the unconfined aquifer.
Keywords	Volatile organic compounds Investigation results Hanford site (2006,2007) Aquifer Sediment Contamination Volatile organic compounds (VOV)
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Pacific Northwest National Lab., Richland, WA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200908
Contract Number	DE-AC05-76RL01830

Volatile Organic Compound Investigation Results, 300 Area, Hanford Site, Washington.

Volatile Organic Compound Investigation Results, 300 Area, Hanford Site, Washington.
DE2008936597

Publication Date	2008
Personal Author	Peterson, R. E.; Williams, B. A.; Smith, R. M.
Page Count	78
Abstract	Unexpectedly high concentrations of volatile organic compounds (VOCs) were discovered while drilling in the unconfined aquifer beneath the 300 Area of the Hanford Site during 2006. The discovery involved an interval of sediment within the unconfined aquifer that is not routinely monitored by groundwater sampling. Although VOC contamination in the unconfined aquifer has been identified previously and monitored, the concentrations of newly discovered contamination are much higher, with some new results significantly above the drinking water standards. Four locations were drilled to supplement the information obtained at four locations drilled during the earlier investigation in 2006. The results of the combined drilling indicate that the newly discovered contamination is limited to an interval within the Ringold Formation that contains relatively finer-grained sediment than is found in other portions of the unconfined aquifer.
Keywords	Volatile organic compounds Investigation results Hanford site (2006,2007) Aquifer Sediment Contamination Volatile organic compounds (VOV)
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Pacific Northwest National Lab., Richland, WA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200908
Contract Number	DE-AC05-76RL01830