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改进 通过毒理学和发展的风险评估过程 水文地质模型和改进联邦和州的补救措施 通过开发新的就地修复来为超级基金提供场地 技术，特别是生物修复技术。该计划 检查两类常见化学物质的这些因素： 氯代烃和金属。对这两种化学品的兴趣 班级受到亚利桑那州两个受影响的地点的刺激 由他们：(1)南图森遗址-一个正在补救的超级基金遗址 土壤和地下水中含有三氯乙烯、二氯乙烯和 位于图森南部的铬和(2)松树溪遗址 在亚利桑那州中部--州环境质量部 亚利桑那州中部受监管的地点，正在评估中的金属 地下水、地表水和土壤。金属被从土壤中淋滤出来。 在采矿活动之后。在这些地点有一种化学品的混合物， 就像在几乎所有超级基金网站上一样，以及 多种化学品构成了该方案最终目标的基础： 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.