NC0004961_Site Visits_20130128 (3)

Subject- Division of Water Quality Site Visits
Riverbend Steam Station (NC0004961) and Plant Allen Steam Station (NC0004979)
Gaston County
Dear Mr Stowe
Enclosed you will find a compact disc (CD) containing information gathered during the site visits
conducted by Mooresville Regional Office staff (hereinafter MRO staff) at the above noted Duke Energy
Carolinas, LLC (hereinafter Duke) permitted facilities on December 4-6, 2012 The visits were conducted
in conjunction with the annual inspections of the coal ash impoundments by staff from the Land Quality
section of the Division of Energy, Mineral, and Land Resources (hereinafter DEMLR) under their dam
safety program
The site visits were prompted by recent correspondence received from the Catawba Riverkeeper
Foundation, which highlighted their concerns with unpermitted seepages/outfalls at the noted facilities
As a result, MRO staff visited areas at both facilities where there was seepage (as defined by DEMLR)
from the coal ash impoundments, Outfall 002 as noted under the respective permits, and the areas
highlighted by the Catawba Riverkeeper directly along the shoreline (with Mountain Island Lake or lake
Wylie) as possible "seepage areas " -
At each facility DWQ staff collected analytical samples (metals, dissolved solids, and nutrients) from
permitted Outfall 002 as well as three seepage locations (also sampled by Duke personnel) In addition,
MRO staff performed water quality readings (temperature, pH, dissolved oxygen, and conductivity) at the
above noted sampling locations along with areas around Outfall 002 at the Riverbend steam Station
(noted by the Catawba Riverkeeper Foundation)
The enclosed CD contains two folders Folder 018 contains the pictures taken on December 4th and 5th
whereas folder 019 contains the pictures taken on December 6th along with a summary document
containing sampling location maps, the analytical results, and the field water quality readings The
aforementioned information has been forwarded to the Division's NPDES Unit for their consideration.
If you have any questions regarding the enclosed information please contact Ms Marcia Allocco or Mr
Andrew Pitner at 704-663-1699
Sincereel/ly,
Michael L Parker
Surface Water Protection Section Supervisor
Mooresville Regional Office
Enclosure Data CD
Mooresville Regional Office
Location 610 East Center Ave, Suite 301 Mooresville, NC 28115
Phone [phone] Fax [phone] Customer Service 1-877-623-6748
Internet http #portal ncdenr org/web/wq
An Equal Opportunity k Affirmative Action Employer — 30% Recycled/10% Post Consumer paper
Noi thCarolina
Natura!!Y
ACMENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Pat McCrory Charles Wakild, P E
John E Skvarla, III
Governor Director
Secretary
January 28, 2013
Mr Allen Stowe, Water Management
FEB 243
Duke Energy Carolinas, LLC
526 South Church Street, EC13K
QENTRALFILES
Charlotte, North Carolina 28202
DWQIBQG
Subject- Division of Water Quality Site Visits
Riverbend Steam Station (NC0004961) and Plant Allen Steam Station (NC0004979)
Gaston County
Dear Mr Stowe
Enclosed you will find a compact disc (CD) containing information gathered during the site visits
conducted by Mooresville Regional Office staff (hereinafter MRO staff) at the above noted Duke Energy
Carolinas, LLC (hereinafter Duke) permitted facilities on December 4-6, 2012 The visits were conducted
in conjunction with the annual inspections of the coal ash impoundments by staff from the Land Quality
section of the Division of Energy, Mineral, and Land Resources (hereinafter DEMLR) under their dam
safety program
The site visits were prompted by recent correspondence received from the Catawba Riverkeeper
Foundation, which highlighted their concerns with unpermitted seepages/outfalls at the noted facilities
As a result, MRO staff visited areas at both facilities where there was seepage (as defined by DEMLR)
from the coal ash impoundments, Outfall 002 as noted under the respective permits, and the areas
highlighted by the Catawba Riverkeeper directly along the shoreline (with Mountain Island Lake or lake
Wylie) as possible "seepage areas " -
At each facility DWQ staff collected analytical samples (metals, dissolved solids, and nutrients) from
permitted Outfall 002 as well as three seepage locations (also sampled by Duke personnel) In addition,
MRO staff performed water quality readings (temperature, pH, dissolved oxygen, and conductivity) at the
above noted sampling locations along with areas around Outfall 002 at the Riverbend steam Station
(noted by the Catawba Riverkeeper Foundation)
The enclosed CD contains two folders Folder 018 contains the pictures taken on December 4th and 5th
whereas folder 019 contains the pictures taken on December 6th along with a summary document
containing sampling location maps, the analytical results, and the field water quality readings The
aforementioned information has been forwarded to the Division's NPDES Unit for their consideration.
If you have any questions regarding the enclosed information please contact Ms Marcia Allocco or Mr
Andrew Pitner at 704-663-1699
Sincereel/ly,
Michael L Parker
Surface Water Protection Section Supervisor
Mooresville Regional Office
Enclosure Data CD
Mooresville Regional Office
Location 610 East Center Ave, Suite 301 Mooresville, NC 28115
Phone [phone] Fax [phone] Customer Service 1-877-623-6748
Internet http #portal ncdenr org/web/wq
An Equal Opportunity k Affirmative Action Employer — 30% Recycled/10% Post Consumer paper
Noi thCarolina
Natura!!Y