| Client : | IT Corporation, Pittsburg, PA (USA) |
| Site Owner : | NFTA (Niagara Frontier Transportation Authority) |
| PRP : | CBS / Westinghouse |
| ROD : | Record of Decision (ROD) by the Division of Hazardous Waste, New York State Department of Environmental Conservation (NYSDEC) |
| Location : | Buffalo, (NY) Airport, Cheektowaga, NY (USA) |
| Project : | Low Temperature Thermal Desorption of VOC's, Cresol, and Vinyl Chloride |
| Date : | October 1999 thru March 2000 |
| Quantity : | 28,854 tons (US) |
| Budget : | undisclosed |
Site History:
The site was developed in the early 1940s by the US Government for the
manufacture of military aircraft. In 1946, Westinghouse Corporation purchased
the site for the manufacture of electric motors and related electrical components.
Over the years portions of the site were sold to other parties including
the Buffalo Airport Center Associates. Up until 1991, Westinghouse continued
to manufacture electric motors and components with various manufacturing
and warehousing operations being conducted on the other parcels. Due to
expansion of the airport, NFTA purchased the remainder of the property for
construction of taxi-ways and runway clear zones.
Phase I site investigations triggered a series of assessments and evaluations
that led to the ROD and subsequent clean-up.plant, and will be used after
decontamination by Thyssen as new industrial site. The clean-up was funded
by the SEPES (Spanish Governmental agency in charge of industrial redevelopment
of contaminated sites). The soil was already excavated and sieved by a previous
unsuccessful contractor. Deep Green has contracted the thermal desorption
part of the contract for the PAH contaminated soil.
Soil to treat and clean-up objectives:
The soil to be treated contained TCA, TCE, Toluene, Ethyl benzene, Vinyl Chloride, Cresol, and other hydrocarbons. Concentrations and Clean-Up levels are shown in the table below. Despite high moisture (>20%) and clay content, all soils tested clean after initial treatment. A successful stack test was performed in the early stages of the project and continuous emission monitoring was conducted during the entire project. All processed soils were used on site for excavation backfill. Rock and debris was disposed of off-site. This project was completed during the winter season in a very cold (as low as -4 F) and harsh (rainy, windy) climate without a single sample failure. Hours of operation were 24 hours/day, 6 days/wee.
Equipement:
Contaminated soils were processed by a counter flow, direct fired LTDU (Low Temperature Desorption Unit) with nominal capacity of 40 tons (US) per hour. The equipment train included a pre-screener, belt scale conveyor, rotary dryer, fabric filter baghouse, thermal oxidizer, soil moisturizer, and radial stacker. LPG (Propane) was used as process fuel from a portable tank. Electricity was supplied by a portable diesel generator. Two (2), three (3) cubic yard rubber tire front end loaders were used for screening, feeding, and removal of soils.
