NC0003425_Attachment 3 Form 2C_20160101

Duke Energy Progress, LLC
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
Attachment 3
Form 2C — Item II -A - Flow, Sources of Pollution, and Treatment Technologies
Stream
Estimate(d� Average Flow
Comments
A
4
Make-up water for Water Treatment Systems
B
505
Unit 3 Cooling Water Intake
C
592
Units 1 & 2 Cooling Water Intake
D
7
Unit 4 Cooling Tower Blowdown
E
505
Unit 3 Cooling Water Discharge
F
17.3
Unit 4 Cooling Tower Intake
G
505
Unit 3 Cooling Water Discharge
H
0.025
Sewage Treatment Plant Discharge
I
3
Low Volume discharge into Ash Pond/Retention
Basin
J
12
Ash transport into Ash Pond (To be discontinued)
K
0.17
Silo wash water
L
15
Ash Pond discharge into Discharge Canal
(closure flows)
M
1067
Discharge Canal flow into Hyco Lake
N
0.09
Coal Pile Runoff Pond discharge to Hyco Lake
O
1.92
Flue Gas Desulfurization Discharge
P
5.81 (maximum)
Intake to Flue Gas Desulfurization
Q
0.02 (more during
precipitation)
Outfall 001 discharge, seeps, stormwater from
remnant of east ash basin area.
R
1.92
New FGD wastewater treatment system
S
7.0
Flow from lined retention basin (internal)
Roxboro Steam Plant
N00003425
September 2016 update

�o
a)
U)
a)
0
U
T
0
LL
Roxboro Steam Electric Plant Post ash basin flow outfall 003
Plant Process
Streams
A I Water Treatment
0. Systems
Plant Drainage
System
Drains from oil
filled
equipment
containment
F
eatment
il/Waterparator)
Metal cleaning
Outfall 009
(internal) I F
Low Volume
Collection Sump
Unit 4 Cooling 30Unit 4 Cooling To Atmosphere
Water Tower D
Outfall 005 (internal)
F.............................................................
Maintenance Drain
B Unit 3 Cooling
—� Water'
Alternative modes
G
Unit 1&2
—� Cooling Water
I�
Unit 3 Cooling To Atmosphere
Tower
E
Stormwater from
Gypsum Storage Pile Area
Outfall 008 (internal)
H
Domestic Sewage
Waste Treatment Plant
Hyco
Reservoir
P
I Emergency
Flue Gas
Discharge
Desulfurization
NH3 Vapor
Outfall 011 all I
Suppression
Lined
P/C, R
FGD
—Option
(Emergency)
Retention �<••"•" Bio, <.............
Blowdown
basins
Ultra OR
(east and
filtration
OR
Ash Landfill
Leachate
west)
East
settling
West
and SW
K
Stormwater
See
settling
pond
pond
below
i
Silo
Unit 3 Cooling
T:
c3
Wash Water
Tower Pond
Bioreactor
m'•
CD
E?O
Outfall002 internal
w
L
Outfall010
Flush
••••
pond
Heated Water Ash basin closure flows
Mixing Zone M Hyco
Stormwater Effluent Channel Outfall 003
Reservoir Evaporation
Form 2C — Item II A Flows,
S Outfall 012 (internal) Sources of Pollution, and
AOW's and seeps From Lined Treatment Technologies
retention Outfall 003 September 2016
basins above

Roxboro Steam Plant Outfall 006
Raw water
tank drainage
Stormwater (maintenance)
Outfall 006
Coal Pile Runoff Treatment Basin N Hyco Reservoir
pile runoff
Emergency Gypsum I I Truck wheel wash
stack
Form 2C — Item II A Flows,
Sources of Pollution, and
Treatment Technologies
Outfall 006 September 2016

Roxboro Steam Plant Outfall 001
Stormwater
through remnant
of east ash basin
Incidental
AOW's and Gypsum and rail
seepage I runoff
Outfall 001 �Intakepumpsfor
Plant Intake Canal plant processes
Q
A
Outfall 003
Form 2C — Item II A Flows,
Sources of Pollution, and
Treatment Technologies
Outfall 001 September 2016