381 Transportation Logistics Management

Please respond to both students SEPERATLEY!!! with a minimum 100 words each.

Intial Post

Research a site in your local area that has been reported as being a contaminated hazardous material site. Discuss the site and the procedures taken to revive these areas.

Student response 

Danny

There are many technologies discussed in chapter five, and they are grouped into two general classifications. The treatment of hazardous waste cleanup sites is an in-situ treatment or ex-situ treatment (VanGuilder, 2012). In-situ can be defined as the treatment of contaminants before their removal from the soil and groundwater, and ex-situ treatment involves removing the contaminant from its existing location and treating it above the surface (VanGuilder, 2012). 

In-Situ Air entrainment:

• Air Stripping

• Air Sparging

• Soil Vapor Extraction (In-Situ or Ex-Situ)

In-Situ Bioremediation: 

• Bioremediation of chlorinated solvents

• Chemical Oxidation

In-Situ Physical Treatment:

• Soil Excavation

• Pump and Treat 

• Fracturing

• In-Situ Flushing

In-Situ Thermal Treatment:

• Multi-Phase Extraction

• Phytoremediation

• Monitored Natural Attenuation

• Permeable Reactive Barriers

• Circulating Wells

• Electro kinetics 

Ex-Situ Treatments:

• Bioremediation (Slurry Phase or Solid Phase)

• Ex-Situ Physical/Chemical Treatment

• Ex-situ chemical dehalogenation

• Soil washing

• Solvent Extraction

• Ex-Situ Thermal Treatment (Pyrolysis and Incineration)

• Thermal desorption 

• Vitrification

• Thermal off-gas treatment 

These are some of the various cleanup technologies available to us today (VanGuilder, 2012). 

I found a contaminated hazardous material site in Roanoke Virginia. The company was called Matthews Electroplating. The contaminant was chromium and was affecting the groundwater which extended to the groundwater water line (U.S. EPA, 2012).  

             The chemical listed above was identified as a contaminant of concern for the site (U.S. EPA, 2012). The contaminant was the chemical substance found at the site that the Environmental Protection Agency determined to pose an unacceptable risk to human health and the environment (U.S. EPA, 2012). It was found to be the substance that was addressed by cleanup actions crew at the site (U.S. EPA, 2012). Identifying contaminants of concern is a process where the EPA recognizes people, and resources that could be exposed (U.S. EPA, 2012). The site inspection showed to be a high-risk site which initiated a remedial investigation and started the removal process. The documents on exact removal are unavailable, but with this type of facility, the chemical used for plating, and the environment being affected there were probably many different methods used. Some most likely used were soil vapor extraction, chemical oxidation, and a multiphase extraction. There were in-situ treatments and ex-situ treatments used.

Join

While it may not be widely known, Washington Dulles International Airport in Dulles, Virginia is a contaminated hazardous material site. The Resource Conservation and Recovery Act (RCRA) regulations apply here because they burn fuel containing hazardous waste at the former training area in 1989. In 2005, the Metropolitan Washington Airports Authority cooperated with the EPA and Virginia Department of Environmental Quality (VA DEQ) to remediate the former fuel tank area. In March of 2007, the EPA requested the Airport Authority to submit a workplan to address Phase I Environmental Indicator Information Needs. These are measures that explain what’s happening in and around the soil.

   After multiple investigations in the fall of 2007, the Airport Authority submitted a workplan for additional investigations on November 27, 2007. All RCRA corrective action clean-up activities at the airport will be implemented through a Land Use Control Implementation Plan. In August of 2016, the final decision with VA DEQ’s remedy consisted of two components: perform and maintain a groundwater monitoring program; compliance with and maintenance of institutional controls that restrict certain land and groundwater uses at the facility.

   Even with these protective measures, due to the nature or airport operations, contaminants of concern remain. They are related to the fueling, deicing, vehicle maintenance, painting, and fire training activities that occur at the airport. Institutional controls and engineering controls in place at the site include: prohibition on the use of groundwater for potable uses, site only authorized for non-residential use, and a soil management plan for areas of concern and solid waste management units.