How Large is Kalamazoo River Superfund Site? U.S. EPA Allied Paper/Portage Creek/Kalamazoo River Superfund Site Allegan/Kalamazoo County, Michigan 80-miles of River & 3-miles of Portage Creek Approx. 9 million cubic yards of soil and sediment contaminated with PCBs Plainwell removal & disposal at Allied is a small piece of overall Cleanup of Entire River Disposal Options for Entire River must be considered now Why Cleanup is Important? Past 17 years: LITTLE to NO river cleanup Mediated Negotiations Today: 2 Major Agreements Signed by PRPs Benefits of Moving Forward with Cleanup Why TCRA? New data (2006) shows elevated PCB (220 ppm) at 3 hot spots in river sediment & on banks Previously unknown (220 ppm) Eroding banks at Plainwell Impoundment is first most upstream significant source of PCBs to Kalamazoo River Cleanup of Plainwell Impoundment & Supplemental RI/FS Process for moving forward Economical and recreational benefits Clean River, Clean fish Why Disposal at Allied Landfill? Landfill existed for 50 years; is one of four landfills that are part of the Superfund Site Has disposal capacity 12th Street Landfill in Plainwell does not King-Highway landfill in Kalamazoo closed Willow/A-Site landfill in Kalamazoo–ROD issued Cost benefits on-site disposal vs. off-site EPA & State believe Plainwell material can be safely managed at Allied landfill 1 Why EPA & State Believe the Western Disposal Area at Allied Landfill Is Protective Disposal of Plainwell material at Western Disposal Area is protective because: Groundwater & City of Kalamazoo Wells Low permeability of existing paper residuals; equally as protective as a TSCA clay liner Western Disposal Area outside the 100-year floodplain Groundwater flows toward Portage Creek No PCBs in groundwater above State standards for protection of groundwater discharging to surface water (0.2 ppb) Groundwater collection system in front of sheet pile wall, groundwater treated with carbon prior to discharge to WWTP Existing data tells us there is no reason to believe that groundwater beneath the Allied landfill will impact City’s Drinking Water Wells Groundwater moves toward Portage Creek not downward to the City’s Wells No PCBs in groundwater above State’s protective standards for groundwater discharging to surface water (0.2 ppb) Well Network Static water levels being measured at 103 locations on monthly basis 10 permanent sumps 3 staff gages 64 monitoring/extraction wells 26 observation wells Map of water levels Ability to collect analytical samples at 57 monitoring wells Map of sampled wells 2 Temporary vs. Permanent Disposal Placement of the Plainwell material into the landfill is considered “temporary" only in the legal sense in that a “final” cleanup decision has not been made under the Superfund remedial program Public will have opportunity to comment on a proposed cleanup plan for the Allied landfill before EPA makes a final cleanup decision 3 Dewatering & Storm Water Management Plainwell Impoundment Removal Action Runoff Storage Basins Contain 100-year, 24-hour storm event Double-lined flexible membrane liner Geosynthetic Clay Liner 40 mil low or high density polyethylene Geosynthetic Drainage Composite 40 mil textured low or high density polyethylene Interim Cover End of construction season/period of non-use 12 inches thick Top 6-inches capable of revegetation Surface water drainage control features Section 2.10.5 of Design Report Section 2.10.6 of Design Report Transportation of Soil & Sediment Slope disposal cell floors for positive drainage to basins Captured water pumped to basins Final cover for storm water management features Section 2.10.7 – 2.10.8 of Design Report Sealed or lined boxes Truck boxes covered with plastic tarp Wet material Section 3.7.1.1 of Design Report Traffic Control Average 20-30 trucks/day Utilize Established Truck Routes Dedicated Drivers Adjust for Peak Periods of Traffic, if necessary Traffic Control Plan Section 3.7.1.1 of Design Report 4 Contact Information Removal & Disposal Questions: borries.samuel@epa.gov Sam Borries On-Scene Coordinator (312) 353-8360 (800) 621-8431 www.epaosc.org/kzooplainwell Kalamazoo River Overall Project-Related Questions: kolak.shari@epa.gov Shari Kolak Remedial Project Manager (312) 886-6151 (800) 621-8431 www.epa.gov/region5/sites/ kalproject 5