Abstracts of Remediation Case Studies, Volume 7 - Federal ...

In Situ Solidification/Stabilization using the Envirobond TM Process at Two Sites in
the Crooksville/Roseville Pottery Area of Concern, Roseville, Ohio (continued)
Results:
Mean TCLP lead concentration at the inactive pottery factory was reduced from 382 mg/L to 1.4 mg/L - a reduction of
over 99 percent, meeting the alternative UTS for soil
TCLP lead concentrations in all treated and untreated soil samples from trailer park were either at or slightly higher
than the detection limit of 0.05 mg/L, and were not used to evaluate objective
Soil lead bioaccessibility at the trailer park was reduced by approximately 12.1 percent; soil lead bioaccessibility was
not evaluated at the pottery facility.
Costs:
The total cost for the demonstration was approximately $26,000, broken down into 12 separate categories. The unit
cost for the demonstration was $5,176 per cy.
These costs were used to estimate the cost for a typical application of Envirobond TM at full scale.
Full scale estimate was a site-specific total cost of $33,220, with a unit cost of $41.16 per cy for treating 807 cy of leadcontaminated
soil at a 1-acre site within the CRPAC
Description:
The CRPAC is a former pottery manufacturing area located in eastern Ohio. Lead was used in the glazing step of the
pottery finishing process, and improper disposal of the lead-containing waste resulted in contamination of the upper portion
of soil in the area. A field demonstration of in situ solidification/stabilization using the Envirobond TM process was
performed at two sites (a trailer park and an inactive pottery facility) within the CRPAC in September 1998.
The demonstration involved applying Envirobond TM at 10 experimental units at the trailer park and one experimental unit at
the inactive pottery facility, treating a total of approximately 5 cy of soil. The two main goals of the demonstration were to
evaluate whether Envirobond TM could reduce concentrations of leachable lead in the soil to meet the alternative UTS and
whether it could decrease the portion of total lead in soil that is bioaccessible, as measured by the Simplified In Vitro Test
Method for Determining Soil Lead and Arsenic Bioaccessibility, by at least 25 percent. Data from the demonstration
indicated that the mean TCLP lead concentration at the inactive pottery factory was reduced from 382 mg/L to 1.4 mg/L,
which meets the standards. Data from the trailer park were not used to evaluate the goal because TCLP lead
concentrations in all treated and untreated soil samples from this location were either at or slightly higher than the detection
limit of 0.05 mg/L. Analysis of the data for the second goal showed that soil lead bioaccessibility had been reduced by
approximately 12.1 percent, which was less than the project goal of at least 25 percent.
The total cost for the demonstration was $26,000 and the projected total cost for use of this technology to treat 807 cy of
soil at full scale was $33,220, with a unit cost of $41.16 per cy.
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