RISK ASSESSMENT AND REMEDIATION OF HAZARDOUS WASTE

亚利桑那州超级基金基础研究计划的重点是提高 通过制定毒理学和 水文地质模型和改善联邦和州的补救措施 通过开发新原位补救方法为场地提供超级基金 技术，特别是生物修复技术。 程序 研究了两类常见化学物质的这些因素： 氯化烃和金属。 对这两种化学物质的兴趣 亚利桑那州的两个地点受到了影响， （1）南图森网站-一个超级基金网站下修复， 土壤和地下水含有三氯乙烯，二氯乙烯， 铬位于图森南部和（2）皮纳尔溪网站 在亚利桑那州中部-一个国家环境质量部 受监管的网站在亚利桑那州中部正在评估的金属， 地下水、地表水和土壤。 金属从土壤中浸出 采矿活动后。 在这些地方有一种化学物质的混合物， 因为几乎所有的超级基金网站都有， 多种化学物质构成了该计划最终目标的基础： 化学混合物的风险评估和补救。

The focus of the Arizona Superfund Basic Research Program is to improve the risk assessment process through development of toxicologic and hydrogeologic models and to improve the remediation of federal and state superfund sites through development of novel in situ remediation technologies, particularly bioremediation technologies. The program examines these factors for two classes of commonly found chemicals: chlorinated hydrocarbons and metals. Interest in these two chemical classes was stimulated by two sites in Arizona which have been affected by them: (1) South Tucson Site - a superfund site under remediation for soil and groundwater containing trichloroethylene, dichloroethylene and chromium located in the southern part of Tucson and (2) Pinal Creek Site in Central Arizona - a State Department of Environmental Quality regulated site in central Arizona that is under evaluation for metals in groundwater, surface water and soil. Metals were leached from soils after mining activities. There is a mixture of chemicals at these sites, as there are at almost all superfund sites, and the problems posed by multiple chemicals form the basis for the final objective of the program: the risk assessment and remediation of chemical mixtures.