Pollution Engineering - January 2009 - (Page 28)

A Solidiﬁcation/stabilization treatment at a wood-preservingturned Superfund site. By BRIAN G. FARRIER, remedial project manager, EPA Region 4, EDWARD C. HICKS, P project manager, .E., Black & Veatch Special Projects Corp. and CHARLES M. WILK, remediation technology consultant Pond Poles, lumber, equipment and scrap metal was recycled or salvaged. And contaminated soils/sediments were excavated and stockpiled onsite in four encapsulated waste cells, each covered by a geomembrane. The EPA’s removal costs were approximately $12 million. In 1997 and 1998, the state of Georgia conducted its own removal action at the former wood treatment site, during which the three largest cells, primarily containing soils/sediments impacted by creosote and PCP, were disposed off site. The state’s removal costs were approximately $18.5 million. and a olidification/stabilization (S/S) treatment is being used as a remedial component to treat contaminated soils and sediments at the Brunswick Wood Preserving Superfund Site in Brunswick, Ga. This site was placed on Superfund’s National Priorities List in 1997 and currently is undergoing remedial action under the designation Operable Unit One (OU1). The site is an 84-acre former wood treating facility, operated from 1958 until 1991. Three major types of wood preservatives prevalent at the time were used at the site: creosote, which consists of many polycyclic aromatic hydrocarbons (PAHs), pentachlorophenol (PCP, which is associated with dioxin), and chromium/copper/arsenate (CCA). Wood-treating activities were historically conducted at many areas of the site, including process areas, storage areas, the rail spur that ran along the southern end of the site, and several ponds or surface impoundments (IMs). On its western end, the IM-1 pond was used during the 1960s and later buried, while the IM-2 pond was where creosote processing was taking place at the time operations ceased in 1991. On the site’s eastern end, the IM-4 and IM-5 spray ponds were used for spent creosote. Wood preservative chemicals were released to surrounding soils and surface waters as a result of these operations. After a fire in early 1991, the EPA responded with a four-year removal action that included many activities. All but a few of the site structures were demolished and removed. Sludges were dewatered. Wastewater was treated. Drums and lab wastes were disposed off site. 28 Pollution Engineering JANUARY2009 S A pugmill was used for S/S treatment of materials prior to placement.

Table of Contents Feed for the Digital Edition of Pollution Engineering - January 2009

Pollution Engineering - January 2009 Contents The Editor’s Desk EnviroNews PE Events Legal Lookout Green Connections Ten Top Technologies for 2009 Old Fashioned Chemistry Emitting Education NGWA Reports from Its Annual Meeting A Wood and a Pond Company Technical Profiles Filtration/Membrane Products Flow and Level Monitoring Equipment Classified Marketplace Advertisers Index State Rules

Pollution Engineering - January 2009

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