Re: Lead and CERCLA

[Lenny Siegel <lsiegel@cpeo.org>]

>From Heather Clark

Another response regarding lead and CERCLA:

Lead cleanup under CERCLA is also the goal of the Army's Proposed Plan
for
the Open Burning Grounds at the Seneca Army Depot in upstate New York.
According to the Proposed Plan which came out in November 1997, the
Preferred Alternative is currently excavation of soils with lead
concentrations above 500 mg/kg and excavation of creek sediments with
concentrations of copper and lead above the NYSDEC (state) criteria of
16
mg/kg and 31 mg/kg, respectively. 3,800 cubic yards of the excavated
soil
would be processed via a solidfication/stabilization method to meet TCLP
(toxicity characteristic leaching procedure) limits, and all of this as
well as all untreated excavated material would then be disposed of in an
off-site Subtitle D landfill, total quantity of material being 17,900
cubic
yards. Areas of the OB Grounds with soils remaining on site with lead
concentrations above 60 mg/kg are proposed to be covered with 9 inches
of
clean fill and then vegetated. Other measures such as groundwater
monitoring, slope stabilization, etc. would be implemented as well.

Heather Clark
Graduate Student
Natural Resources and Toxicology
Cornell University
<hac4@cornell.edu>