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Forest Service Signs Record of Decision for Meyers Landfill near South Lake Tahoe
The USDA Forest Service signed the Comprehensive Environmental Response Compensation (CERCLA) Record of Decision on November 15, 2007, for the remedy of Operable Unit 1, at the Meyers Landfill site near South Lake Tahoe. The remedy is designed to eliminate exposure to hazardous vinyl chloride from the landfill contents, and to isolate the contents from rain and snowmelt, which contributes to groundwater contamination.
The Meyers Landfill, a former municipal landfill, was operated by El Dorado County (County) under a Forest Service Special Use Permit from approximately 1955 to 1971 and by private parties from 1946 to 1955. Groundwater beneath the Site has been impacted by water leaching through the decomposing landfill waste. This has resulted in a groundwater contaminant plume extending approximately 1500 feet down gradient from the Site. The primary contaminant of concern is vinyl chloride, a volatile organic compound.
The proposed remedy follows the US. Environmental Protection Agency's presumptive remedy for Comprehensive Environmental Response Compensation (CERCLA) municipal landfill sites.
Major components of the selected remedy include:
Installation of a multilayer cap and cover system to isolate and eliminate direct contact with refuse, reduce or eliminate erosion and surface water infiltration through the waste mass, and reduce or eliminate potential surface contaminant migration. The cover system includes a passive landfill gas (LFG) venting system to control LFG migration.
The relocation of waste from above and east of the South Tahoe Public Utility District (STPUD) sewer line and consolidation into the main waste mass. This will result in the sewer line being located outside the boundary of the waste disposal area and the footprint of the cover system.
Implementation of institutional controls to safeguard the integrity of the multi layer cap and cover system and associated monitoring systems. Institutional controls to protect human health and the environment and the integrity of the remedy, as specified in a future Land Use Control Remedial Design (LUC RD), will consist of prohibitions on groundwater use at the Site and on-site activities and use that could threaten short-term and long-term remedy integrity.
Long-term post-closure monitoring and maintenance that includes groundwater monitoring, perimeter landfill gas migration monitoring.
The Record of Decision can be viewed at: http://www.fs.fed.us/r5/ltbmu.
A hard copy of the Record of Decision Memo is available at the Forest Supervisor's Office, 35 College Dr., South Lake Tahoe. The office is open Monday through Friday, 8:00 a.m. to 4:30 p.m.
The Administrative Record, which supports the OU-1 ROD is available for viewing at the Forest Supervisor's Office during normal working hours shown above. Please contact the Supervisor's Office at (530) 543-2600 to schedule a viewing time.
For further information regarding the site and the selected remedy, please contact Gail Bakker at (530) 478-6192.
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