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

Peterson, R. E. ; Williams, B. A. ; Smith, R. M.

Technical Information Center Oak Ridge Tennessee

关键词: Volatile organic compounds;    Investigation results;    Hanford site (2006,2007);    Aquifer;    Sediment;   

RP-ID  :  DE2008936597

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

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.