摘要:

AbstractA series of relationships have been developed for estimating unit costs for decontamination and dismantlement (D&D) of a number of structure types. These relationships may be applied in the absence of other data to obtain rough order‐of‐magnitude cost estimates for D&D activities. The relationships were developed using D&D costs estimated for various types of buildings at the U.S. Department of Energy Fernald site. These unit costs take into account the level of radiological contamination as well as the building size and t

ISSN:1051-5658    

DOI:10.1002/rem.3440070202

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1997

数据来源: WILEY

摘要:

AbstractAn experiment was performed on six species of trees to determine the feasibility of remediating groundwater contaminated with an agricultural herbicide, bentazon, at a site in southern Louisiana. Fate studies on bentazon support that it is translocated to the plant leaves where it is degraded by photolysis to lower‐order derivative compounds within short periods of time. Both transpiration observations and dosing tests suggest that the most favorable phreatophyte and tolerant specie of tree to bentazon exposure was the black willow(Salix nigra

ISSN:1051-5658    

DOI:10.1002/rem.3440070203

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1997

数据来源: WILEY

摘要:

AbstractCleanup activities often focus on the initial and final concentration levels of contaminants. What happens in‐between, during implementation of treatment technologies, has raised major concerns by several environmental groups. To address this issue, the U.S. Environmental Protection Agency (EPA) has undertaken the task of developing a guidance that would identify the potential for cross‐media transfer during implementation of various soil treatment technologies and recommend best management practices (BMPs) to prevent or control these cross‐media transfers. The soil treatment technologies have been grouped into seven major categories in this effort. This article provides some details of the seven soil treatment technology groups and the general BMPs recommended in the draft BMP guidance document. One case history of existing control practices is also presented in this article and compared with the recommended

ISSN:1051-5658    

DOI:10.1002/rem.3440070204

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1997

数据来源: WILEY

摘要:

AbstractA pilot field study evaluated whether adding solid peroxygen materials during land treatment could cost effectively accelerate cleanup at a site contaminated with petroleum‐related compounds. Five test cells were constructed containing approximately five cubic yards of soil contaminated with 300–400 mg/kg of total petroleum hydrocarbons (TPH). Three cells received treatment with solid peroxygen materials (either MgO2or CaO2), while the other two cells served as controls (no peroxygen amendment). Adding solid peroxygen compounds effectively reduced the hydrocarbon contamination in the soils and decreased the treatment time. During this time, the concentration of TPH in soil in the three treatment cells decreased. In contrast, there was little loss of TPH from the two control cells simulating traditional land treatment. Adding the solid peroxygen materials reduced the total site remediation time, thereby reducing the overall co

ISSN:1051-5658    

DOI:10.1002/rem.3440070205

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1997

数据来源: WILEY

摘要:

AbstractThe U.S. Environmental Protection Agency (EPA) performed a reservoir diagnosis and developed low‐cost recommendations to improve drinking water quality for the city of Nizhnii Tagil, Russia. Despite widespread regional pollution, water quality within the drinking water supply source can be summarized as generally good. Sampling and analysis efforts did not reveal appreciable amounts of hazardous chemicals or metals. The major water quality problem stems from an abundance of blue‐green algae during the summer months, causing drinking water taste and odor problems and filter clogging at the water treatment plant. City water treatment officials also frequently experience difficulties with maintaining an effective disinfection residual in the distribution system because it spans more than 30 kilometers in length. Regrowth of microorganisms in the distribution system often causes coliform bacteria counts to exceed standards. The implementation of a watershed protection and management program, and the installation of a new disinfection system, to purify drinking water and to reduce bacterial growth in the distribution system should improve drinking water quality for the city reside

ISSN:1051-5658    

DOI:10.1002/rem.3440070206

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1997

数据来源: WILEY

摘要:

AbstractNatural microbes living in contaminated subsurface media can be enhanced to degrade large concentrations of contaminating compounds at a faster rate than the microbes could degrade under natural conditions. A feasibility study demonstrating this principle was performed on‐site in southern Louisiana to evaluate the effectiveness of two microbial degradation remediation methods used to decrease the human carcinogenic risks associated with exposure to ethylene dichloride and vinyl chloride concentrations in contaminated clay and sludge soils at the site. The results of the study are compared to an acceptable Louisiana Department of Environmental Quality closure level to evaluate in‐situ microbial enhancement in chlorinated aliphatic‐contaminated sludge and clay soils as a remediation/cleanup alternative in similar industrial situa

ISSN:1051-5658    

DOI:10.1002/rem.3440070207

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1997

数据来源: WILEY

摘要:

AbstractContrary to many's expectations, the Republican‐led 104th Congress passed a substantial amount of environmental legislation. In addition to a variety of bills that received limited public attention, two major environmental laws—the Safe Drinking Water Act Amendments and the Food Quality Protection Act—were passed and signed into law. Still, many important legislative efforts were left unfinished at the end of the second session and will resurface in the 105th Congress. This article discusses the environmental legislation that passed in the 104th Congress and explores what environmental legislative initiatives will be addressed in the 105th Congress. (While not intended to be all‐inclusive, the article mentions most major environmental legislation, with a particular focus on waste

ISSN:1051-5658    

DOI:10.1002/rem.3440070208

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1997

数据来源: WILEY

ISSN:1051-5658    

DOI:10.1002/rem.3440070209

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1997

数据来源: WILEY

ISSN:1051-5658    

DOI:10.1002/rem.3440070210

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1997

数据来源: WILEY

ISSN:1051-5658    

DOI:10.1002/rem.3440070211

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1997

数据来源: WILEY