Reynolds, NY

A.62 Reynolds, NY

A.62.1 Summary

Environment:	Freshwater
Scale:	Full
Contaminants of Concern:	PCB Max: 1,300 ppm, PAH max: 3734 ppm, total dibenzofurans (TDBFs) Max: 0.44 ppm All collected within 500 ft of the Reynolds outfalls
Final Remedy:	Mechanically dredged 69,000 yd³ of sediment with PCB concentrations less than 50 ppm were stabilized with Portland cement and disposed of in the landfill on the facility. The remaining 16,655 yd³ (14,920 tons of sediment with PCB concentrations greater than 50 ppm and 5,360 tons of sediment with PCB concentrations greater than 500 ppm) were shipped to Chemical Waste Management in Model City, New York, an approved hazardous waste facility, for disposal.

A.62.2 Site Description

Year: 2004

Near shore area

Actual Volume Removed: 85,655 yd³

A.62.3 Remedial Objectives

PCB: 1 ppm

Total PAH: 10 ppm

TDBF: 1 ppb

21.8 acres were dredged out of the 30 that was estimated.

A.62.4 Remedial Approach

Dredging was performed using three cable arm environmental buckets (two 5 ½ yd³ and one 2 1/2 yd³). Equipment for each dredging operation included a derrick barge with a fixed boom mounted crane for bucket operation and the GPS positioning system WINOPS.

A.62.5 Monitoring

Resuspension:

Containment system of 3,829 ft of steel interlocking sheet pile panels installed to completely enclose dredge area, reducing potential for sediment migration. Combination of herbicide Aquathol and aquatic non-crop herbicide Reward applied within the sheet piled area for vegetation suppression.

Area C used silt curtains as containment barrier.

Performance:

Multiple dredging passes required for some areas.

Residuals:

Sample results show 12 cells did not meet cleanup goal of 1 ppm PCBs even though cells underwent several dredge passes. As a result, 0.75-acre area was backfilled with three-layer system to achieve cleanup goal. Remaining exposed sediments average 0.8 ppm PCBs within remaining 255 cells— below cleanup goal.

23 cells containing total PAHs between 10 and 20 ppm not capped—determined that low molecular weight PAHs would readily break down over short period of time bringing total PAH level for cells below 10 ppm.

A.62.6 References

USEPA Superfund Record of Decision: Reynolds Metals Co EPA ID: NYD002245967. Sep 1993. http://www.epa.gov/superfund/sites/rods/fulltext/r0293201.pdf.

USEPA. Five-Year Review Report Reynolds Metals Company Site. Apr 2006. http://www.epa.gov/superfund/sites/fiveyear/f06-02018.pdf.

USEPA. Five-Year Review Report Reynolds Metals Company Site. Feb 2011. http://www.epa.gov/superfund/sites/fiveyear/f2011020003794.pdf.

Major Contaminated Sediment Sites Database; Sept. 2004 as updated 2008. http://www.smwg.org/MCSS_Database/MCSS_Database_Docs.html.

Publication Date: August 2014

Permission is granted to refer to or quote from this publication with the customary acknowledgment of the source (see suggested citation and disclaimer).