GSTDTAP  > 地球科学
DOI10.2172/991093
报告编号PNNL-19277
来源IDOSTI ID: 991093
Conceptual Models for Migration of Key Groundwater Contaminants Through the Vadose Zone and Into the Upper Unconfined Aquifer Below the B-Complex
Serne, R. Jeffrey; Bjornstad, Bruce N.; Keller, Jason M.; Thorne, Paul D.; Lanigan, David C.; Christensen, J. N.; Thomas, Gregory S.
2010-07-01
出版年2010
语种英语
国家美国
领域地球科学
英文摘要The B-Complex contains 3 major crib and trench disposal sites and 3 SST farms that have released nearly 346 mega-liters of waste liquids containing the following high groundwater risk drivers: ~14,000 kg of CN, 29,000 kg of Cr, 12,000 kg of U and 145 Ci of Tc-99. After a thorough review of available vadose zone sediment and pore water, groundwater plume, field gamma logging, field electrical resistivity studies, we developed conceptual models for which facilities have been the significant sources of the contaminants in the groundwater and estimated the masses of these contaminants remaining in the vadose zone and currently present in the groundwater in comparison to the totals released. This allowed us to make mass balance calculations on how consistent our knowledge is on the current deep vadose zone and groundwater distribution of contaminants. Strengths and weaknesses of the conceptual models are discussed as well as implications on future groundwater and deep vadose zone remediation alternatives. Our hypothesized conceptual models attribute the source of all of the cyanide and most of the Tc-99 currently in the groundwater to the BY cribs. The source of the uranium is the BX-102 tank overfill event and the source of most of the chromium is the B-7-A&B and B-8 cribs. Our mass balance estimates suggest that there are much larger masses of U, CN, and Tc remaining in the deep vadose zone within ~20 ft of the water table than is currently in the groundwater plumes below the B-Complex. This hypothesis needs to be carefully considered before future remediation efforts are chosen. The masses of these groundwater risk drivers in the the groundwater plumes have been increasing over the last decade and the groundwater plumes are migrating to the northwest towards the Gable Gap. The groundwater flow rate appears to flucuate in response to seasonal changes in hydraulic gradient. The flux of contaminants out of the deep vadose zone from the three proposed sources also appears to be transient such that the evolution of the contaminant plumes is transient.
英文关键词B-Complex U Tc-99 CN Cr source of contamination groundwater deep vadose zone
URL查看原文
来源平台US Department of Energy (DOE)
引用统计
文献类型科技报告
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/4818
专题地球科学
推荐引用方式
GB/T 7714
Serne, R. Jeffrey,Bjornstad, Bruce N.,Keller, Jason M.,et al. Conceptual Models for Migration of Key Groundwater Contaminants Through the Vadose Zone and Into the Upper Unconfined Aquifer Below the B-Complex,2010.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Serne, R. Jeffrey]的文章
[Bjornstad, Bruce N.]的文章
[Keller, Jason M.]的文章
百度学术
百度学术中相似的文章
[Serne, R. Jeffrey]的文章
[Bjornstad, Bruce N.]的文章
[Keller, Jason M.]的文章
必应学术
必应学术中相似的文章
[Serne, R. Jeffrey]的文章
[Bjornstad, Bruce N.]的文章
[Keller, Jason M.]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。