Refer to Polrep #1
From June 24 through July 1, 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 27-July 1, 2005, the following activities occured:
· Covering of the landfill's Phase II was completed.
· Treatability studies for two potential leachate treatment compound additives were completed. During this activity, as leachate was disturbed, continuous fence-line air monitoring was conducted (hydrogen sulfide levels were well below planned action levels). One additional treatment compound additive is still being investigated.
· One pond, contaminated with leachate, was treated with a biological product to test that product's effectiveness.
· Water quality samples of the biologically treated pond were periodically taken to monitor pH, Dissolved Oxygen (DO), and Hydrogen Sulfide 'headspace' levels.
· Water from smaller surface ponds was trasferred to larger surface ponds to evaluate ground water recharge and make preperations for the process of backfilling ponds.
· Site surveying was initiated to support the surface water management design.
· Design and install a temporary, high capacity leachate treatment system.
· Per the design plans, approve installation of the 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.
· Finalize third treatability study for leachate management and investigate most cost effective option.
· Begin implementation of 2' cap for 'Phase II summit' location.
· Approve design plans and begin development of the surface water management system.
None
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