Refer to Polrep #1.
CURRENT ACTIVITES:
From June 6 through 17, 2005, U.S. EPA and its Emergency Rapid Response Services (ERRS) and Superfund Technical Assessment and Response Team (START) contractors continued actions to reduce releases of hydrogen sulfide from the landfill and eliminate high level exposure to nearby receptors.
Routine actions include on-site and off-site monitoring for hydrogen sulfide and particulate matter, site security, general site maintenance. Specific response actions are detailed below.
SITE ACTIVITIES TO DATE:
From June 6-10, 2005, the following activities occured:
- Approximately 20,000 tons of debris from a temporary staging location was reconsolidated to the open-face of the landfill.
- Haul roads were maintained from the temporary staging location to the open-face face of the landfill. Additionally, a temporary road was built-up to provide access to the proposed leachate treatment area from S. Leavitt Road on the west side of the property.
- The discharge lines for the leachate pilot test system were reconfigured to accommodate treatability studies.
From June 13-17, 2005, the following activities occurred:
- Debris consolidation continued and was completed on June 16. The landfill's open face is being covered with on-site soils.
- Treatability studies continued with potential leachate treatment compound additives. During this activity, as leachate is disturbed, continuous fence-line air monitoring is conducted. Hydrogen sulfide levels were well below planned action levels during this activity.
- Design and install a temporary, high capacity leachate treatment system.
- Design and install a surface water and storm water management system which includes capping of the "phase 2 summit" location.
- Design and install a permanent leachate management system.
- If necessary, design and install a soil vapor extraction and treatment system.
- Complete western access road.
- Conduct treatability study with water treatment products for leachate management.
- Cover the landfill's open-face.
- Finalize design and initate development of a surface water management system.
- U.S. EPA has drafted a site contingency plan which includes action levels and work practices in the event that off-site hydrogen sulfide releases occur at elevated levels.
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