Transcript Barksdale Alternative Water Supply Project Proposal

Former DuPont Barksdale Works
Project Update
December 14, 2004
DuPont Corporate Remediation Group
Great Lakes Visitors Center
Purpose of Presentation
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
Provide an update on alternative water supply
work completed since early November.
Present a summary of other site work
completed in 4Q2004.
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DuPont Company Representatives
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Brad Nave
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Project Director, DuPont Corporate Remediation
Group (CRG)
Cary Pooler
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Project Manager, URS Corporation
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Alternative Water Supply Project
Pipeline Construction Update
Alternative Water Supply
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Approximately 48,600 feet of main (ductile iron pipe
and HDPE) and service lateral (copper line to homes)
is specified in the current design.
To date, approximately 95% of the pipeline project
(based on lineal footage) has been constructed.
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All pipeline mains have been completed (6.25 miles). Final
section of main was hydro tested on October 29th.
86% of the laterals have been completed (~14,300 feet); 5
lateral installations remaining.
19% of eligible homes are using municipal water (9 current
connections).
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Wannebo Rd
Barksdale Municipal Water Project
Main Pipeline Completed as of
October 29, 2004
Nevers Rd
Engoe Rd
Wedal Rd
St at e
H
Bjork Rd
Wedal Rd
wy 1
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Engoe Rd
Birch Grove
Hw
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te
S ta
Ondossago n Rd
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Nolander Rd
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Main completed
Main to be
completed
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Pipeline Construction Update
Alternative Water Supply

Majority of construction will be completed by the end of calendar
year 2004, assuming:
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No regulatory delays.
Outstanding contractor performance (construction and safety).
Tolerable weather.
No unforeseen or unmanageable technical issues.
Anticipate completion of most of the remaining service lateral
lines and final hook-ups during the next several weeks.
A few private properties will have to be fully restored (final
grading and seeding) in 2005, due to weather issues. Also, the
road restoration in Birch Grove will be completed in 2005 per
Barksdale Township’s request.
Wetland issues at two properties have yet to be resolved;
therefore, these lateral lines may be completed in 2005.
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Wedal Rd
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29600N
29890N
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30600N
73150BJ
30490N
30110N
30700N
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30900N
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Nolander Rd
Nolander Rd
30240N
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Fire Call Number
72480H
72470H
72450H
Parcel Boundary
Parcels Included in Municipal
Water Supply Agreement
Roads
72370H
72330H
72860H
72790H
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72520H
72420H
72410H
ate
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Lateral Connections Remaining
72730H
72700H
Hw
y1
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Final Connection made
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Former DuPont Barksdale Works Project Update
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72040H
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72920H
72910H
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LEGEN D
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Birch Grove
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30380N
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V
& 73300BC
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& 73280H
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& 73250H
30810N
30300N
73500H
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Stat e
Bjork Rd
29450N
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Hwy
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Wedal Rd
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Other Barksdale Site Work
Residential Monitoring
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A new detection of 2,6-DNT was reported as
part of the August data set.
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Result estimated by lab due to low concentration.
Result was below Wisconsin Enforcement
Standard.
Potentially affected home hooked-up to municipal
today.
Carbon filters continue to be effective.
Official report of results will be issued shortly.
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2004 Debris Removal
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Inspected 275 acres, primarily along ditches
and creeks, for debris remaining from plant
activities.
Identified numerous items, which included
drums, pipes, sheet metal, equipment parts.
Screened items found for explosive residues.
None found.
About 45 items removed to off-site landfill.
Additional recovery work will be conducted in
2005.
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2004 Debris Removal – typical items
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Site Investigation – Fall 2004
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Field Activities (Sept. – Nov.):
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16 soil borings sampled.
11 new wells installed.
36 wells sampled (25 existing and 11 new).
Preliminary findings:
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Groundwater conditions near site boundary and
burning ground appear stable.
No site related chemicals found below western
TNT refining buildings.
Two new groundwater contamination source areas
for east central plume identified; however,
concentrations of site-related chemicals are low
when compared to the Former Burning Grounds.
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Miscellaneous Site Work
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Continuing work with Adventus to evaluate a
new generation of soil amendments to reduce
concentrations of nitroaromatic/nitramine
compounds in soil.
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Generation 3 product uses nano-scale zero valent
iron.
Preliminary results pending.
Continuing Georgia Tech research on
destruction of DNT and TNT.
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Home Value Protection Program
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Three homes purchased to date. Two have
been resold. One home demolished.
Home Value Protection Program will remain
in effect until six months after alternative
water is available.
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Property owners will be notified in early 2005.
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Questions or comments?
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