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to the CAG (10/24/01)
EPA Update for the EMCAG
October 24, 2001
Status Update:
EPA is awaiting comments regarding draft
EE/CA
Revised EE/CA should be released in December
2001 or January 2002
Public comment period on EE/CA and cleanup
proposal is anticipated for January 2002
Historic mitigation meetings scheduled for:
October 27th, November 15th and 19th
EPA has begun meeting with Selectboards
to discuss truck traffic (routes, load limits, road and bridge
quality, and road and bridge improvement schedules)
Specific Topics:
EPA's goal is for a cleanup based on local
input
Truck volume could decrease with certain
cleanup changes
Eliminate wall and re-shape slopes of
TP-1 and TP-2 (assuming truck volume is the primary consideration
as opposed to preservation of industrial landscape)
Reduce cover thickness (consider re-use)
Work with landowners regarding acceptability
of developing borrow pit adjacent to the site S
Revised concept based on CHC (Richard
Downer and Woody Reed's comments) and revised technical evaluation
by EPA team contractors (more likely to use sulfate reducing
bacteria)
Focus on natural systems approaches
with reduced operation and maintenance cost
Look into self-perpetuating wetland
system for TP-1 and TP-2 (requires most stringent cover design)
TP-3
EPA still proposes complete preservation
with collection and treatment
Final decision must await formal position
from VT ANR with respect to maintenance obligation
EE/CA and Action Memorandum can allow
for re-evaluation during design when more detailed cost information
is available
Summary of Proposed EE/CA Changes
Remove wall as primary component
Include re-grading to stable slope
configuration for all options
Include SRB as primary concept for passive
treatment (pilot studies will be conducted of passive treatment
systems during the design phase; changes may be made as needed,
based upon study results)
Update truck volume and cost counts
based on cover thickness and elimination of the wall
EPA Public Comment and Decision Process
EPA establishes Administrative Record
and places copy of Administrative Record at site repository