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Former DuPont Barksdale Works Project Update
May 19, 2004
DuPont Corporate Remediation Group
Great Lakes Visitors Center
May 19, 2004 Former DuPont Barksdale Works Project Update
2
Purpose of Presentation
Provide an update on the alternative water supply project
Provide update on additional project work conducted since the January 2004 public meeting and planned work for 2004
May 19, 2004 Former DuPont Barksdale Works Project Update
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Presenters
Brad Nave– Project Director, DuPont Corporate Remediation
Group (CRG)
Cary Pooler– Project Manager, URS Corporation
May 19, 2004 Former DuPont Barksdale Works Project Update
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Background of Proposed ProjectAlternative Water Supply
Groundwater near the former Barksdale Works is contaminated with compounds associated with DuPont’s former explosives manufacturing activities
DuPont has made a commitment to make an alternative water supply available to eligible home and property owners
DuPont evaluated several water supply options and a pipeline from Washburn to Barksdale is the leading option
May 19, 2004 Former DuPont Barksdale Works Project Update
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Background of Proposed ProjectAlternative Water Supply
DuPont committed to provide the following to eligible home and property owner’s in Barksdale– Finance and build an alternative water
supply– Pay for operations and maintenance– Pay for water used (within generous limits)
for as long as the eligible residents own their home
May 19, 2004 Former DuPont Barksdale Works Project Update
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Pipeline Construction UpdateAlternative Water Supply
Agreement between Barksdale, Washburn, and DuPont signed on January 28th
– DuPont will build the system– Washburn will operate and maintain the line
Ordinance adopting agreement was passed by Washburn on March 8th
To date 33 owners have signed up for water– Remaining eligible owners are encouraged to sign
the agreement
May 19, 2004 Former DuPont Barksdale Works Project Update
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Eligible Properties
&V&V &V
&V&V &V &V
&V&V &V
&V &V &V
&V
&V&V&V&V&V&V&V
&V
&V&V
&V
&V
&V
&V
&V &V&V
&V&V&V&V&V &V&V
&V
&V&V&V&V&V
&V
&V
29450N29600N 29890N
30900N30110N
73150BJ
30240N
30300N
30380N
30810N
30700N30490N
30600N
72480H72470H72450H
72420H72410H
72370H72330H
72520H
72920H72910H
72860H
72790H
72730H72700H
72040H
73500H
73300BC73280H73250H
&V Fire Call NumberParcel Boundary
Parcels Included in Municipal Water Supply AgreementRoads
LEGEND
May 19, 2004 Former DuPont Barksdale Works Project Update
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Pipeline Construction UpdateAlternative Water Supply
Pipeline design is at 90%– Currently incorporating comments from permitting agencies,
Washburn, and bidders– Need feedback from individual homeowners for curb stop
and lateral line routing Bid meeting held on May 18th
– Super Excavators– Reuben Johnson– Summit Environmental– S. J. Lewis– S. R. Weidema
Bidding will occur June 11th
Construction start anticipated for Summer 2004
May 19, 2004 Former DuPont Barksdale Works Project Update
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Construction PermitsAlternative Water Supply
Permits required from– WDNR
Approval to build pipeline Stream crossings Erosion control
– US Army Corps of Engineers Environmental permit
– Bayfield County Shoreline grading
– Department of Transportation Right-of-way occupancy
All permits currently in review and are anticipated to be issued by July
May 19, 2004 Former DuPont Barksdale Works Project Update
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Chris Curran
Assistant Project Manager
Responsible for Barksdale pipeline design
Has lateral line sketches for those who have signed water agreements
May 19, 2004 Former DuPont Barksdale Works Project Update
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Eric Bryan
Construction Engineer and Contract Administrator
May 19, 2004 Former DuPont Barksdale Works Project Update
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Bill Barnes
Construction Manager and Site Safety Officer
Bill will be the primary contact for lateral line installation
May 19, 2004 Former DuPont Barksdale Works Project Update
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Residential Monitoring
April 2004 sampling results (10 potable wells) will be transmitted to WDNR shortly– Preliminary results indicate no detections of site-
related compounds Annual change-out of carbon cylinders was
completed in March/April 2004– Two seasonal homes remain
Next sampling event will be conducted in September (approximately 82 homes)
May 19, 2004 Former DuPont Barksdale Works Project Update
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Site Investigation
Trenching and further sampling in production areas is starting May 24th
– Using robotic equipment– 33 areas to be excavated– Focusing within the former manufacturing area
10 new monitoring wells will be installed in the summer
Additional groundwater sampling to be conducted in late summer/early fall
May 19, 2004 Former DuPont Barksdale Works Project Update
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Miscellaneous Site Work
Continuing work with Adventus to evaluate a new generation of soil amendments to reduce concentrations of nitroaromatic/nitramine compounds in soil– Generation 3 product uses nano-scale zero valent
iron
May 19, 2004 Former DuPont Barksdale Works Project Update
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Home Value Protection Program
30700 Nolander - sold in April 72450 Highway 13 - DuPont accepted
purchase offer earlier this month 72410 Highway 13 - DuPont has made offer
to purchase