WQ0000020_Drawings for a potential coal ash structural fill project_20071130

Proposed Ash Structural Fill Project in Asheville Area - WQ 0000020
Subject: Proposed Ash Structural Fill Project in Asheville Area - WQ 0000020
From: "Tcypfer, John" [e-mail]>
Date: Fri, 30 Nov 2007 15:43:37 -0500
To: <[e-mail]>
CC: "Wheeler, Cam" <[e-mail]>, "Madewell, Alan"
<[e-mail]>, "Mottola, Daniel' <[e-mail]>
Jon,
Attached are drawings for a potential coal ash structural fill project per our reuse permit WQ 0000020.
We briefly discussed this a month or so back. The issue with this project is that there is a drainage ditch
which runs through the middle of the proposed fill area. The Asheville Airport is working with their
consultants and the Corps of Engineers (and DENR) to obtain the proper approvals & permits to fill in
this ditch with soil. Assuming the Airport is successful in this process, the plan is to place fill soils into
the ditch. Above which a geosynthetic clay liner (GCL) will be placed and above which coal ash will be
used as fill. A concrete pipe will be installed to carry the stormwater flow that used to flow through the
ditch. This pipe will be installed beneath the GCL and ash fill.
The reuse permit requires we stay at least 50 feet away from surface waters. Once the Airport has the
proper permits to fill in this ditch, will it then no longer be considered surface waters such that ash can
be placed over the area that was once a drainage ditch? We would appreciate your review. Please call
me at 546-7863 with questions. Thanks
<<111307_Drawing_Set. pdf»
John R. Toepfer, P.E.
Progress Energy
Environmental, Health & Safety - POG
VN: 770-7863
Bell: 919-546-7863
Cell: 919-632-3714
Progress Energy Carolinas, Inc.
410 S. Wilmington Street, PEB4
Raleigh, NC 27601
[e-mail]
Fax: [phone]
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Content -Description: 111307 Drawing_Set.pdf
Content -Type: application/octet-stream
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1 of 1 12/3/2007 10:08 AM

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Re: [Fwd: Proposed Ash Structural Fill Project in Asheville Area - ...
Subject: Re: [Fwd: Proposed Ash Structural Fill Project in Asheville Area - WQ 0000020]
From: Landon Davidson <[e-mail]>
Date: Mon, 10 Dec 2007 14:42:06 -0500
To: Jon Risgaard [e-mail]>
Jon -
My initial response and information is as follows:
1) "Drainage ditch" is considered a stream by SWP who has visited the site last
week. According to Kevin Barnett, groundwater was actively discharging to the
stream at the time of his visit.A petroleum sheen was also observed in the stream
at this time.
2) Given #1, what is CO ND view on separation distance if this stream is in a CMP?
3) Also, based on #1 above, they probably could not meet the 2 ft. vertical
separation for 'seasonal high water table.
There are also issues with the arsenic which I need to look into.
L
Jon Risgaard wrote:
------------------------------------------------------------------------
Subject:
Proposed Ash Structural Fill Project in Asheville Area - WQ 0000020
From:
"Toepfer, John" <[e-mail]>
Date:
Fri, 30 Nov 2007 15:43:37 -0500
To:
<[e-mail]>
To:
<[e-mail]>
CC:
"Wheeler, Cam" <[e-mail]> , "Madewell, Alan"
<[e-mail]> , "Mottola, Daniel" <[e-mail]>
Jon,
Attached are drawings for a potential coal ash structural fill project per our
reuse permit WQ 0000020. We briefly discussed this a month or so back. The
issue with this project is that there is a drainage ditch which runs through the
middle of the proposed fill area. The Asheville Airport is working with their
consultants and the Corps of Engineers (and DENR) to obtain the proper approvals
& permits to fill in this ditch with soil. Assuming the Airport is successful
in this process, the plan is to place fill soils into the ditch. Above which a
geosynthetic clay liner (GCL) will be placed and above which coal ash will be
used as fill. A concrete pipe will be installed to carry the stormwater flow
that used to flow through the ditch. This pipe will be installed beneath the
GCL and ash fill.
The reuse permit requires we stay at least 50 feet a
Once the Airport has the proper permits to fill in t
longer be considered surface waters such that ash can
that was once a drainage ditch? we would appreciate
me at 546-7863 with questions. Thanks
<<111307_Drawing_Set.pdf>>
John R. Toepfer, P.E.
way from surface waters.
his ditch, will it then no
be placed over the area
your review. Please call
1 of 2 12/10/2007 2:49 PM

Re: [Fwd: Proposed Ash Structural Fill Project in Asheville Area - ...
Progress Energy
Environmental, Health & Safety - POG
VN: 770-7863
Bell: 919-546-7863
Cell: 919-632-3714
Progress Energy Carolinas, Inc.
410 S. Wilmington Street, PEB4
Raleigh, NC 27601
john.toepferopgnmai1.com
Fax: [phone]
G. Landon Davidson, P.G.
NCDENR - Division of Water Quality
Aquifer Protection Section
Regional APS Supervisor - Asheville Regional Office
2090 U.S. Hwy. 70
Swannanoa, N.C. 28778
ph.: 828-296-4500
fax: [phone]
email: [e-mail]
web page: http://h2o.enr.state.nc.us/agw.html
Landon Davidson <Landon.DavidsonCabcmai1.net>
NC DENR - Asheville Regional Office
Division of Water Quality -Aquifer Protection Section
12/10/2007 2:44 PM