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 Background
This Superfund site (US EPA REGION 5 ID# MND006192694), located in
New Brighton, Minnesota, is managed by the Minnesota Pollution
Control Agency. This site was host to two wood treatment plants that
used creosote and pentachlorophenol (PCP) as a wood preservative.
Spills and drippage of these chemicals contaminated the site process
areas, the low-lying disposal area of the site as well as the
groundwater. The site is to be redeveloped for commercial and light
industrial use.
Solution
The US EPA 1995 document entitled "Presumptive Remedies for Soils,
Sediment and Sludges at Wood Treater Sites" identified biological
treatment as the primary presumptive remedy for treating organic
contaminants. In line with this EPA guidance, biological treatment
of PCP and creosote-contaminated soil was deemed as the most
cost-efficient remedy when considering overall effectiveness in
terms of permanence and reduction of toxicity, mobility and volume
of contaminants. Biogenie was selected to provide this remedy and as
proof of the reliability of its proprietary biological treatment
technology, a guarantee of treatment performance and cost was
provided.
Services
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Treatability study to determine the optimal biotreatment
parameters;
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On-site ex situ Biopile treatment of 14,700 yd3 of PCP and
creosote-contaminated soil;
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Treatment of 4,200 yd3 of contaminated soil to meet LDR Phase IV
Treatment Standards (74 ppm of PCP) prior to being disposed of
off-site in an authorized landfill;
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Treatment of 10,500 yd3 of contaminated soil to reach a criteria
set at 10 ppm of PCP and 5 ppm of cPAHs prior to being used as
backfill on-site.
This
project highlights Biogenie’s technical know-how together with its
ability to provide a cost-efficient and guaranteed solution for the
remediation of PCP and creosote-contaminated soil on former wood
treatment plant sites.
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