Risk variability due to uniform soil remediation goals

被引:11
作者
Labieniec, PA
Dzombak, DA
Siegrist, RL
机构
[1] CARNEGIE MELLON UNIV,DEPT CIVIL & ENVIRONM ENGN,PITTSBURGH,PA 15213
[2] COLORADO SCH MINES,ENVIR SCI & ENGN DIV,GOLDEN,CO 80401
来源
JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE | 1996年 / 122卷 / 07期
关键词
D O I
10.1061/(ASCE)0733-9372(1996)122:7(612)
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
If a single contaminant concentration in soil,were to be used as the remediation goal at all potential remediation sites in a region, risk would be expected to vary across sites due to differences in site characteristics that affect transport and fate. A methodology is developed to evaluate such variability. It is applied to Ross County, Ohio, a region for which compiled, detailed hydrogeologic information is available. Four carcinogenic contaminants (benzene, trichloroethylene, chlordane, and benzo[a]pyrene) and exposure scenarios (on-site commercial, on-site recreational, and on-site and off-site residential) are evaluated. Results vary, but in general, indicate that for contaminants that are highly degradable such as benzene or immobile in the subsurface such as benzo[a]pyrene, specifying a uniform soil remediation goal would result in relatively small degree of regional risk variability. However, for highly mobile and persistent contaminants like trichloroethylene, a uniform goal would result in a large degree of regional risk variability. Application of the methodology to a larger, less well-characterized region is analyzed.
引用
收藏
页码:612 / 621
页数:10
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