Refer to Polrep #1.
From June 17 through 24, 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 20-24, 2005, the following activities occured:
· Covering of the landfill’s open face was completed. On-site soil is being used to cover low areas over the remainder the Phase II cell in preparation for proper capping and drainage design.
· 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.
· Design engineers were on site to collect data to prepare final plans for the site’s storm and surface water control.
· 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.
· Cover low areas on phase 2 of the landfill.
· Approve design plans and begin development of the surface water management system.
U.S. EPA presented site progress updates at two public interest groups' meetings. One was conducted on June 21 and the other on June 24.
|
