HomeMy WebLinkAboutNCS000548 DMR SW (4) (`DUKE Coal Combustion Products
Environmental, Health,&Safety
ENERGY. RECEIVED Duke Energy Carolinas, LLC
CAROLINAS
PJAs AUG 1 9 2015 526 South Church Street
Charlotte, NC 28202
CENTRAL FILES Mailing Address
DVVR SECTION Mail Code EC13K/P 0 Box 1006
Charlotte, NC 28201-1006
August 13, 2015
North Carolina Department of Environment and Natural Resources
Division of Water Resources
Attention: Central Files
1617 Mail Service Center
Raleigh,NC 27699-1617
Subject: Non-stormwater Discharge Evaluation and Certification
NPDES Stormwater Permit(No. 11''C4Sb'a6 478
Duke Energy Carolinas, LLC -
Marshall Steam Station
Catawba County
Pursuant to Part II, Section A:1.(e) of the above referenced National Pollutant Discharge
Elimination System (NPDES) Stormwater permit (the permit), Duke Energy Carolinas, LLC
(Duke Energy) is providing the first annual evaluation and certification Report for Marshall
Steam Station located in Catawba County(attached). This report includes the results of an initial
outfall evaluation completed by HDR, Inc. at each of the permitted stormwater outfalls for the
presence of non-stormwater discharges. For those non-stormwater discharges identified, Duke
Energy shall indicate how the discharge is an allowable non-stormwater discharge. Below is a
summary of the first permit year evaluation.
The stormwater outfalls were observed following a 72-hour period where no significant rainfall
was recorded. All stormwater outfalls exhibited no discharge at the time of observation except
for the following:
• Outfall SW006 is located across the paved road from the material storage shed. This pipe
is partially filled with moist sediment; discharge could not be determined at outfall;
possible groundwater is the source of flow.
• Outfall SW007 is located near the main powerhouse yard drainage, across from
warehouse. Pipe is partially submerged now and likely mostly submerged under full
pond conditions; discharge could not be determined at outfall.
• Outfall SW008 is located along the north side of intake structure about halfway up the
channel bank.
• Outfall SW009 is located along south side of intake structure, behind electrical rooms.
This pipe system is mainly for the once-thru, non-contact cooling water with only two
storm water inlets, inspected upstream storm water inlets for additional discharges and
none were found.
,4DUKE
ENERGY®
CAROLINAS
NON-STORM WATER DISCHARGE ASSESSMENT AND CERTIFICATON
Date of Test or Outfall Evaluation Results Potential Source Name of
Evaluation Observed Method Person who
conducted the
test
7/29/15 SW006 Field Pipe is Possible Patrick
submerged groundwater Blandford
during full
pond
. conditions
7/29/15 SW007 Field Pipe is Uncontaminated Patrick
submerged groundwater Blandford
during full
pond
conditions
7/29/15 SW009 Field Pipe is mainly Clear, Patrick
for the once- continuous Blandford
thru, non- discharge
contact present;
cooling water unknown
with 2 storm
water inlets
Should you have any questions regarding this submittal or require additional information,
please contact Brad Loveland or email brad.loveland@duke-energy.com.
Pursuant to Part III, Section B, Paragraph d of the permit :
"1 certify, under penalty of law, that this document and all attachments were prepared under my direction
or supervision in accordance with a system design to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry of the person or persons who manage the
system, or those persons directly responsible for gathering the information, the information submitted is,
to the best of my knowledge and belief true, accurate, and complete. I am aware there are significant
penalties for submitting false information, including the possibility of fines and imprisonment for knowing
violations."
Sincerely,
Rick Roper
General Manager III
Marshall Steam Station
Power Generation Carolinas West
Annual Certification
Non-Stonmvater Discharge Page 2
tiN DUKE
ENERGY.
CAROLINAS
Attachment: Non-Stormwater Outfall Inspection, July 29, 2015
be w/attachment: Scott La Sala
Don Scruggs
Brad Loveland
Patrick Blandford, HDR, Inc.
UPS Tracking Number 1Z8955X41394427856 Raleigh Central Office
Annual Certification
Non-Stormwater Discharge Page 3
��DUKE
e ENERGY.
Location: Marshall Steam Station
Non-Stormwater Discharge Outfall Inspection Permit No. NCS000548
Date of Last Rainfall July 23, 2015 Depth of Last Rainfall Event: 1.1 inches
Outfall ID:SW001 Latitude: 80°57'33" Longitude: 35°36'23"
Non-Stormwater Discharge Present: ['Yes .. . No
Outfall Description:24"HPDE, smooth lined
Nearby Landmark: at northeast end of miscellaneous material storage area east of ash
basin embankment, near Area of Wetness#2 Observations:wetness and pooled water observed at the downstream end of
the pipe; area wiped cleaned to evaluate discharge potential; no significant
Outfall Image discharge generated after 5 minutes;evaluated upstream structure and pipe
�� ,=s -- and no discharge or wetness in pipe was observed; residual water likely
= +, , . M stormwater trapped in pipe by collar that is slowly releasing over time
may, . �'�-- 115, .,,'''�¢ ,-: /',,'i,
•
,t� ��,, _�li,
Follow-up Investigation: none
r, ; �,hit,
'-'-3 Allowable Non-Stormwater Discharges Historical Follow-Up
a
�' 'n''. �. � �,� �' .;�� " Other Authorized Non-stormwater NPDES permit:
—— ; �-1.,r,'� . , -.,j,-.. �y ,r, <, Uncontaminated Groundwater El ❑
tit • :r .- ,,x;LS ; ar-.j.". .7i, �
, ""*. . r:�-k�x. .< wr: . .� /. . 1.4 Foundation Drains..... .. . .. . ❑ ❑
, - ... �'ir_illc`, ; ` ' r_�.,, Air-Conditioner Condensate without Added Chemicals . . ❑ ❑
Springs ❑ ❑
Drainage Area Activities(check all that apply) Uncontaminated Potable Water Discharges . ..LI ❑
Spoil Area.. . . 0 Decommissioning Activity ❑
Waterline and Fire Hydrant Flushings ❑ ❑
Borrow Area ... ❑ Limestone Unloading ..❑ Water from Footing Drains . .. ❑ ❑
Equipment/Vehicle Parking ® Limestone Handling ❑ Flows from Riparian Habitats and Wetlands.... .. . .... . ❑ LI
Undeveloped/Natural Area. . . . . . . . ❑ Gypsum Handling. ....❑ Fire-Fighting or Fire-Fighting Training Discharges . . . . . ❑ El
Inert Laydown/Storage . . . ....... . . .. . ® Coal Hauling ... . . ❑ Emergency Shower or Eye-Wash Discharges ❑ El
Above Ground Liquid Storage (non-oil) ❑ Coal Storage. ❑
Above Ground Liquid Storage(oil).. ... .. .. . .0 Coal Handling... . . . .. . .❑ Inspector: Patrick Blandford(HDR) Date: 7/29/30
Vehicle/Equipment Maintenance.. . . . ® Ash Handling . ... ❑
Fuel/Oil Unloading .... . . ............... ..... .. .. . .❑ Ash Hauling . . ❑
Chemical Loading/Unloading ❑ Ash Storage/Structural Fill . ... ....❑
Switchyard ❑
Landfills/Scrap yards/Open Dumps. . . . ❑
Notes
1 If the outfall cannot be observed,go to the new most downstream inlet on the pipe network and observe if there is any flow at that point
4'DUKE
ENERGY
Location: Marshall Steam Station
Non-Stormwater Discharge Outfall Inspection Permit No. NCS000548
Date of Last Rainfall July 23,2015 Depth of Last Rainfall Event: 1.1 inches
Outfall ID:SW002 Latitude: 80°57'35" Longitude: 35°36'23" •
Non-Stormwater Discharge Present: ❑Yes No
Outfall Description:24"CMP
Nearby Landmark: south of current boat ramp and ash basin discharge channel
Observations:pipe rusted at the bottom and is likely submerged under full
Outfall Image pond conditions
- 4 ^' j
r ' `, ,, t \'�AA� ., rV .4k - � v -. Follow-up Investigation: none.--25'4:,--=;:4::,:.,z -;,`eto,„ ^' ` 4`S1$ to ,,,, r .:7 '
, , ,
-r fi" ;" ���"`"' A t ^'` .. -'` Allowable Non-Stormwater Discharges Historical Follow-Up
--`- \. Z4.-'• r[f.:,,T ;..,•1' .'~
' -. , . , Other Authorized Non-Stormwater NPDES permit:
' ,` Uncontaminated Groundwater . . . .. . . ❑ 0
Foundation Drains ... .. ............... . ... .. . . .. .. .. .❑ ❑
Air-Conditioner Condensate without Added Chemicals.... 0 0
Springs.... ...... .. . ❑' p
- Uncontaminated Potable Water Discharges . ❑ 0
Waterline and Fire Hydrant Flushings..... . . ... . . . ❑ 0
Drainage Area Activities(check all that apply) Water from Footing Drains. ❑ ❑
Spoil Area.. .. . ... .. .. ....... .. .. . ... .... ......... ❑ Decommissioning Activity . . . ....❑ Flows from Riparian Habitats and Wetlands..... ..-.. . . . ❑ 0
Borrow Area . ❑ Limestone Unloading. . ... . . ❑ Fire-Fighting or Fire-Fighting Training Discharges ❑ ❑
EquipmentNehicle Parking ® Limestone Handling • 0 Emergency Shower or Eye-Wash Discharges 0 0
Undeveloped/Natural Area ..... . ... ...... ... . ..❑ Gypsum Handling 0
Inert Laydown/Storage ® Coal Hauling... . ... . . .. ..... ..........❑ Inspector. Patrick Blandford (HDR) Date: 7/29/2015
Above Ground Liquid Storage(non-oil) ❑ Coal Storage. .............. . ... . .. . .❑
Above Ground Liquid Storage(oil) . . ❑ Coal Handling ❑
Vehicle/Equipment Maintenance ® Ash Handling . ... . ❑
Fuel/Oil Unloading.... . . .. 0 Ash Hauling
Chemical Loading/Unloading. 0 Ash Storage/Structural Fill . . . . . ❑
Switchyard 0
Landfills/Scrap yards/Open Dumps 0
Notes
1 If the outfall cannot be observed,go to the new most downstream inlet on the pipe network and observe if there is any flow at that point.
f�DUKE
ENERGY
Location: Marshall Steam Station
Non-Stormwater Discharge Outfall Inspection Permit No. NCS000548
Date of Last Rainfall. July 23,2015 Depth of Last Rainfall Event 1.1 inches
•
Outfall ID: SW003 Latitude: 80°57'67" Longitude: 35°36'11"
Non-Stormwater Discharge Present 0Yes . .. . .®No
Outfall Description: riprap lined ditch
Nearby Landmark: midway along miscellaneous material storage area, east of ash basin
embankment Observations: none
Outfall Image
' ��� f A- Follow-up Investigation: none
� . y f
rh^ Y '' 'Ti,. . r ' -
Allowable Non-Stormwater Dischargeses Historical Follow-Uprt `
,.4-yr . .. ;^' ' .,..;,,,it
yt Other Authorized Non-Stormwater NPDES permit.
‘
CItt
,r u a -
Un
contaminat.e..d..G
..roundw..ater.
.. ..
❑
iK .4�Y . 4 ' :,*;;_._,,,,, ` -Te4kgitffi°at Foundation Drains 0 0� fATmay. cF , te x, A,1". S „' ,, ,,:.- y , -,✓
' „ a�, a , Air-Conditioner Condensate without Added Chemicals
� d - r � ' d 0hS"^ ' y�G;,▪ '3 Springs.
Z°> & 1( ! '��r �.tt`-_ _ yFts, 3. u.a _ e ��,de�GE�it ' '20
+ h^� `ws ke��2 ,bj',i7�:, a=zr/ tR53•'-i-A�r1L +?-? ;� Uncontaminated Potable Water Discharges . . . . ❑ ❑'§:a —V . 0..V � va..41.041:::4t4,`":3," ''�rsTr�� A.t. ;,_ w- ;-*� - +kEM• .
,, �5,v,-ASn,,litisL�.'Vi .:s94sf`s3a i;.,rg.e1-',ce, R▪W Waterline and Fire Hydrant Flushings.. . . .. 0 ❑ti ��� rif ��zo ' \� E .1- Y ��.'c .;',..R,, (,, ,
Water from Footing Drains ❑ 0
Drainage Area Activities(check all that apply) Flows from Riparian Habitats and Wetlands . .. .. . 0 0
Spoil Area... 0 Decommissioning Activity . ... . . ❑
Fire-Fighting or Fire-Fighting Training Discharges . . . .. ❑ 0
Borrow Area. .... .. . . .. ....... . . . . .0 Limestone Unloading. . .. ... ❑
Emergency Shower or Eye-Wash Discharges . . 0 0
Equipment/Vehicle Parking . .... . .® Limestone Handling . . .. . .0
Undeveloped/Natural Area . . . . . . . . ❑ Gypsum Handling . . ❑ Inspector Patrick Blandford(HDR) Date: 7/29/2015
Inert Laydown/Storage . . . . .. . . . . ... ® Coal Hauling . ....❑
Above Ground Liquid Storage(non-oil) . . ❑ Coal Storage . . ❑
Above Ground Liquid Storage(oil) . . ..... ...❑ Coal Handling
Vehicle/Equipment Maintenance . . ® Ash Handling .... ❑
Fuel/Oil Unloading. . . .. . . . . ...... .. 0 Ash Hauling . 0
Chemical Loading/Unloading . ... . . . . . .❑ Ash Storage/Structural Fill ❑
Switchyard. ❑
Landfills/Scrap yards/Open Dumps . ❑
Notes
1. If the outfall cannot be observed,go to the new most downstream inlet on the pipe network and observe if there is any flow at that point
k�DUKE
ENERGY
Location: Marshall Steam Station
Non-Stormwater Discharge Outfall Inspection Permit No. NCS000548
Outfall ID: SW004 Latitude:80°57'48" Longitude: 35°36'01" Date of Last Rainfall: July 23,2015 Depth of Last Rainfall Event 1 1 inches
•
Non-Stormwater Discharge Present. ['Yes ... . ... . ®No
Outfall Description: 36" HDPE, corrugated
Nearby Landmark: south of old boat ramp
Observations:pipe is partially filled with sediment
Outfall Image
to Jn e" 0 74 f ,Af 4
t'olkityy 04,-,
t ' y nn „ r 'x t Follow-upInvestigation:none
tr.t44,,.V't,, ,..P.St.2.' t. g H
x F .y1 . �c � wµ.,a Allowable Non-Stormwater Discharges Historical Follow-Up
ft - 1 '` :r y� ,xr Other Authorized Non-Stormwater NPDES permit•
El El
4,,
-; �t ;1-'h` -:�1 � � °A r..,711....,.,,,,...\_,,,,.....,,_,
.. t:,`( '.- Uncontaminated Groundwater . 0 0
' 4 ` � R F � ' '°1 � = k�R Foundation Drains ❑ 0
4.314,
A ,• '-4 ,, .' 4',--t''' ''><r *4t. 1?- Air-Conditioner Condensate without Added Chemicals . .❑ 0
y k- '4--#4,--4',4,„--, 9;.", �. :4'- ',`, .1. Springs. ❑ 0
.��� �, ;� ` � i4. Uncontaminated Potable Water Discharges. ❑ ❑
Waterline and Fire Hydrant Flushings. .. . . . . .❑ ❑
Water from Footing Drains 0 0
Drainage Area Activities(check all that apply)
Flows from Riparian Habitats and Wetlands.. .. .. ..... . . .❑ 0
Spoil Area ❑ Decommissioning Activity... . ❑ Fire-Fighting or Fire-Fighting Training Discharges. .... . ❑ 0
...... . ....
Borrow Area.. ❑ Limestone Unloading 0 Emergency Shower or Eye-Wash Discharges ❑ 111Equipment/Vehicle Parking . . Limestone Handling. . . ...... . .. . ❑
Undeveloped/Natural Area. . . . .® •Gypsum Handling . ... .....❑
Inert Laydown/Storage 0 Coal Hauling... . .. • ...❑ Inspector: Patrick Blandford(HDR) Date: 7/29/2015
Above Ground Liquid Storage(non-oil). .. ❑ Coal Storage. 0
Above Ground Liquid Storage(oil) 0 Coal Handling... . ❑
. . .. ...... . . .
Vehicle/Equipment Maintenance . . . ❑ Ash Handling . . . ......... . . . ... .. . ❑
Fuel/Oil Unloading.... . . . . ........ .. . .. ❑ Ash Hauling
Chemical Loading/Unloading . 0 Ash Storage/Structural Fill ..0
Switchyard.. . . 0
Landfills/Scrap yards/Open Dumps ❑
Notes
1. If the outfall cannot be observed,go to the new most downstream inlet on the pipe network and observe if there is any flow at that point.
ir'DUKE
ENERGY.
Location: Marshall Steam Station
Non-Stormwater Discharge Outfall Inspection Permit No. NCS000548
Outfall ID:SW006 Latitude: 80°57'51" Longitude: 35°35'57" Date of Last Rainfall: July 23,2015 Depth of Last Rainfall Event: 1 1 inches
•
Non-Stormwater Discharge Present. ®Yes ❑No
Outfall Description: 18"CMP
Nearby Landmark:across the paved road from the materials storage shed
Observations:pipe is partially filled with moist sediment; discharge could not
Outfall Image be determined at outfall, pipe is likely submerged during full pond conditions
,.1,. "TA(-7, , `%: s. 7.--'7.7.-----k.77.74.1'"41-4.1.3 -�,"
- .. _ } ,- •` ,r). d%. N Follow-up Investigation:upon inspection of upstream structure in warehouse
�" •° r a discharge was observed; the discharge appears to be coming from the
. •-- ' 'r' direction of a pipe that was marked as abandoned.
_ r , r
r, - ;,, .\\ �'�'`jt..' v..?„,,,,,.. '.:wb'a��f :'" 71;i Allowable Non-Stormwater Discharges Historical Follow-Up
`�• ✓ - 4.7..!'�, , ,�`- --.,�,-'' Other Authorized Non-Stormwater NPDES permit
•� ,.1--5-,,1-.., t .Y e� It ' �, ❑ ❑
�� x > t 1, Uncontaminated Groundwater 0 0
i' k q � „ ice"' ''1 0* Foundation Drains 0 0
i °.._ ;`:,�,1,,_,, ,_ 4 ,;.. -..�.—�,,... -r1�.1+>,r; Air-Conditioner Condensate without Added Chemicals ...❑ 0
Springs. 0 ❑
Drainage Area Activities(check all that apply) Uncontaminated Potable Water Discharges. 0 0
Spoil Area... . . . .......... . . ....❑ DecommissioningActivityWaterline and Fire Hydrant Flushings. . .... . . ❑ 0
Borrow Area .❑ Limestone Unloading. ...... . . . ....❑ Water from Footing Drains.. .. ❑ 0
Equipment/Vehicle Parking . 0 Limestone Handling .❑ Flows from Riparian Habitats and Wetlands .. . . . 0 0
Undeveloped/Natural Area . . . El Gypsum Handling . ❑ Fire-Fighting or Fire-Fighting Training Discharges . . 0 0
Inert Laydown/Storage . . ... . 0 Coal Hauling . ... ❑ Emergency Shower or Eye-Wash Discharges 0 0
Above Ground Liquid Storage(non-oil).... . . ® Coal Storage. 0
Above Ground Liquid Storage(oil) ....® Coal Handling ❑ Inspector: Patrick Blandford (HDR) Date 7/29/2015
Vehicle/Equipment Maintenance.. . . . ..... . .❑ Ash Handling . . .❑
Fuel/Oil Unloading 0 Ash Hauling 0
Chemical Loading/Unloading.. . . . . ..... . . .® Ash Storage/Structural Fill . 0
Switchyard.. . . .... ❑
Landfills/Scrap yards/Open Dumps 0
Notes
1 If the outfall cannot be observed,go to the new most downstream inlet on the pipe network and observe if there is any flow at that point
.,DUKE
ENERGY
Location: Marshall Steam Station
Non-Stormwater Discharge Outfall Inspection Permit No. NCS000548
Outfall ID:SW007 Latitude:80°57'51" Longitude: 35°35'56" Date of Last Rainfall: July 23, 2015 Depth of Last Rainfall Event: 1 1 inches •
Non-Stormwater Discharge Present: ®Yes .... .......❑No
Outfall Description:60"CMP
Nearby Landmark: main powerhouse yard drainage, across from warehouse
Observations:pipe is partially submerged now and likely mostly submerged
Outfall Image under full pond conditions;discharge could not be determined at outfall.
i`ri`v-1‘."`-' m`s. .,vo.. ..am. },4,-..-1,-777-7., v;,a'ig,,' `..J�- . . ,,°�W� N
-ritrf` 1: t. 4'� Y, Follow-up Investigation:checked upstream structures and discharge through
rs �' ' � pipe system to outfall was observed all the way back to limestone unloading
:�.4x-,,:5;44::4,t, "`: �'t ,,,,•Yro,�:' ;4^ "f ''• r- and storage area, monitoring scheduled to be performed.
als S.r '''.....4,404`l
( , ,y ' V. ",L, e Allowable Non-Stormwater Discharges Historical Follow-Up
1„.'",, ,'
.,Sir.'r...1,, Other Authorized Non-Stormwater NPDES permit:
:-. ,i_ . - - .f
; - Uncontaminated Groundwater ® ❑
44
=— --- Foundation Drains ❑ El
Air-Conditioner Condensate without Added Chemicals El 0
Springs. El ❑
Drainage Area Activities(check all that apply) Uncontaminated Potable Water Discharges ❑ ❑
Spoil Area ❑ Decommissioning Activity ❑ Waterline and Fire Hydrant Flushings. . . . .. . .. . . .. .. . .❑ 0
Borrow Area ❑ Limestone Unloading ® Water from Footing Drains... .. . . ❑ 0
Equipment/Vehicle Parking . . . ... ..... ..... . . ® Limestone Handling ..❑ Flows from Riparian Habitats and Wetlands ❑ 0
Undeveloped/Natural Area ® Gypsum Handling . . . . ❑ Fire-Fighting or Fire-Fighting Training Discharges ❑ 0
Inert Laydown/Storage... . .. . ... . ... ... ... ...❑ Coal Hauling . ... . . ... . . .... ......El Emergency Shower or Eye-Wash Discharges El 0
Above Ground Liquid Storage(non-oil)... ... .❑ Coal Storage . ❑
Above Ground Liquid Storage(oil) El Coal Handling. . .. .... . . . . . . ❑ Inspector' Patrick Blandford (HDR) Date 7/29/2015
Vehicle/Equipment Maintenance . ❑ Ash Handling ❑
Fuel/Oil Unloading. 0 Ash Hauling 0
Chemical Loading/Unloading ® Ash Storage/Structural Fill.... ... . .❑
Switchyard..... .. . . .
Landfills/Scrap yards/Open Dumps 0
Notes
1 If the outfall cannot be observed,go to the new most downstream inlet on the pipe network and observe if there is any flow at that point
!.,DUKE
ENERGY.
Location: Marshall Steam Station
Non-Stormwater Discharge Outfall Inspection Permit No. NCS000548
Outfall ID: SW008 Latitude:80°57'50" Longitude: 35°35'53" Date of Last Rainfall July 23, 2015 Depth of Last Rainfall Event 1.1 inches
•
Non-Stormwater Discharge Present: ❑Yes .. . ®No
Outfall Description: 8"CMP
Nearby Landmark: north side of intake structure about halfway up the channel bank
Observations: none
Outfall Image
L
'}0.41.4.,-,,,,,f,,,,,,,-0,„.,b,! ,0b.:,-24,,,,.--1;,-0, Follow-up Investigation: none
�, }',. .' ,2'."..- Allowable Non-Stormwater Discharges Historical Follow-Up
r!4Other Authorized Non-Stormwater NPDES permita' •
1 ;.,:rt Uncontaminated Groundwater. . .. . .. ........ .. ....,' Foundation Drains ..... . ❑ ❑, r; ` Air-Conditioner Condensate without Added Chemicals . . ❑ ❑
P `• ,i/ ;` Springs. .... . . . ❑ 0
_✓ t`�, 1 • %4"t ''" ,i ' Uncontaminated Potable Water Discharges.. . .... . ❑ ❑
Waterline and Fire Hydrant Flushings . .. . 0 0
Drainage Area Activities(check all that apply)
Water from Footing Drains. ..... ... . 0 CI
Flows from Riparian Habitats and Wetlands.. .... . . ❑ 0
Spoil Area ❑ Decommissioning Activity .. . . . .❑
Fire-Fighting or Fire-Fighting Training Discharges. . . ..❑ ❑
Borrow Area .0 Limestone Unloading. . ❑ Emergency Shower or Eye-Wash Discharges . ❑ ❑
Equipment/Vehicle Parking .. . .... . . ❑ Limestone Handling. ❑ •
Undeveloped/Natural Area 0 Gypsum Handling . . . . . . .❑
Inert Laydown/Storage . . .0 Coal Hauling Inspector Patrick Blandford(HDR) Date 7/29/2015
Above Ground Liquid Storage(non-oil) . 0 Coal Storage 0
Above Ground Liquid Storage(oil) . ...... . . ❑ Coal Handling . . .... . . . . ... . . . .❑
Vehicle/Equipment Maintenance 0 Ash Handling ❑
Fuel/Oil Unloading . . . .❑ Ash Hauling . . 0
Chemical Loading/Unloading. ❑ Ash Storage/Structural Fill.... . . .❑
Switchyard . ❑
Landfills/Scrap yards/Open Dumps . .... . .. ❑
Notes
1 If the outfall cannot be observed,go to the new most downstream inlet on the pipe network and observe if there is any flow at that point
d�DUKE
ENERGY
Location: Marshall Steam Station
Non-Stormwater Discharge Outfall Inspection Permit No. NCS000548
Date of Last Rainfall July 23, 2015 Depth of Last Rainfall Event. 1.1 inches
•
Outfall ID: SW009 Latitude: 80°57'48" Longitude: 35°35'51"
Outfall Description: 36"CMP Non-Stormwater Discharge Present. ®Yes . . ❑No
Nearby Landmark: south side of intake structure, behind electrical rooms
Observations: clear, continuous discharge present
Outfall Image
_:IP: , 1:-:, ..:-.,,-, ` ,'-'.S`II. '-``=.A.,,Z=i'lt„, ,.',t, s'g.Z!',;-;,.--,,I,,ya.A.ti-
�r ;. ' -7 . `', ^ .s.' > ; �- Follow-up Investigation:pipe system is mainly for the once-thru, non contact
Itl,. *` Sr ' y `� x -L7 cooling water with only two stormwater inlets, inspected upstream stormwater
', °' 4_ j r� inlets for additional discharges and none were found
r
•
" 0: -,..• i - , ted" + ,•� Allowable Non-Stormwater Discharges Historical Follow-Up
r -,; ,°r`: ___ Other Authorized Non-Stormwater NPDES permit.
Sc „ -L NC0004987 Outfall#003 ® /1
",...10.:1" 4='?�;-%;R` �: •�" Uncontaminated Groundwater. . .❑ 0`,�` '� ri Foundation Drains.... . • ❑ 0
" ry ,, ` k " - ' .-* Air-Conditioner Condensate without Added Chemicals . .❑ 0
-••;-,-•-•:_' . - ;, `. . i ". "_. :. Springs .. . . ... . . . . ... . . .. . . . . . . ❑ 0
Uncontaminated Potable Water Discharges . . . . . .❑ 0
Drainage Area Activities(check all that apply) Waterline and Fire Hydrant Flushings . .... . . . .. . ❑ 0
Spoil Area.... .. . . . 0 Decommissioning Activity . . ..❑ Water from Footing Drains. ❑ ❑
. . . ... .. . . .
Borrow Area .... . . ... .0 Limestone Unloading . ❑ Flows from Riparian Habitats and Wetlands . ❑ 0
Equipment/Vehicle Parking . ... ..... . . 0 Limestone Handling. . . . . . 0 Fire-Fighting or Fire-Fighting Training Discharges 0 0
Undeveloped/Natural Area . .... . ... ❑ Gypsum
• Handling •••• • ❑ Emergency Shower or Eye-Wash Discharges . • . . 0 0
Inert Laydown/Storage . ... . . . . .... . ..❑ Coal Hauling . . . .. . . . . . ❑
Above Ground Liquid Storage(non-oil). . 0 Coal Storage ❑ Inspector Patrick Blandford(HDR) Date 7/29/2015
Above Ground Liquid Storage(oil) .. .. . .❑ Coal Handling
Vehicle/Equipment Maintenance.. . . . . ❑ Ash Handling . ... 0
Fuel/Oil Unloading ... . . . . . ❑ Ash Hauling . ❑
Chemical Loading/Unloading . 0 Ash Storage/Structural Fill.. . 0
Switchyard. ❑
Landfills/Scrap yards/Open Dumps.... 0
Notes
1 If the outfall cannot be observed,go to the new most downstream inlet on the pipe network and observe if there is any flow at that point
*�DUKE
V ENERGY
Location: Marshall Steam Station
Non-Stormwater Discharge Outfall Inspection Permit No. NCS000548
Outfall ID:SW011 Latitude: 80°57'52" Longitude: 35°35'43" Date of Last Rainfall July 23, 2015 Depth of Last Rainfall Event: 1.1 inches
•
Non-Stormwater Discharge Present. ❑Yes . . ... . ®No
Outfall Description:24"CMP
Nearby Landmark: south bank of discharge channel
Observations: outfall is covered in vegetation and inaccessible due to water
Outfall Image and steep slopes
..
4.
•
„irk.rt ��'� ,,,,* �' .**� 'x 1« Follow-up Investigation:inspected upstream structure for presence of
*°W;,” DL- . ,..<•',.4"-=. f t discharges
•+.4e-i .fp. -+v.l Jj .. jmoi..°
....;i-- -,s' _ "��> __ 1:::
Allowable Non-Stormwater Discharges Historical Follow-Up
,A° ej4 Other Authorized Non-Stormwater NPDES permit:
Uncontaminated Groundwater ❑ 0
Foundation Drains 0 0
' ,,. 4. Air-Conditioner Condensate without Added Chemicals . .❑ 0
x Springs. .. .... . . ❑ 0
Uncontaminated Potable Water Discharges.. . .. . . .... . ❑ 0
Drainage Area Activities(check all that apply) Waterline and Fire Hydrant Flushings . . ...... . . . .... .. . ❑ 0
Spoil Area ❑ Decommissioning Activity ❑ Water from Footing Drains . . ❑ 0
Borrow Area . . . El Limestone Unloading 0 Flows from Riparian Habitats and Wetlands. . . .. . . . .❑ 0
Equipment/Vehicle Parking . . 0 Limestone Handling. . . . ❑ Fire-Fighting or Fire-Fighting Training Discharges... .. .. ❑ 0
Undeveloped/Natural Area ❑ Gypsum Handling . ❑ Emergency Shower or Eye-Wash Discharges . .... . ❑ 0
Inert Laydown/Storage. 0 Coal Hauling 0
Above Ground Liquid Storage(non-oil). . ... .❑ Coal Storage. ... ❑ Inspector Patrick Blandford(HDR) Date-7/29/2015
Above Ground Liquid Storage(oil). . .... ❑ Coal Handling. . ❑
Vehicle/Equipment Maintenance. 0 Ash Handling ....0
Fuel/Oil Unloading 0 Ash Hauling . . ..... . . .. .... . . .❑
Chemical Loading/Unloading... . . ❑ Ash Storage/Structural Fill. . .... .. ❑
Switchyard. ❑
Landfills/Scrap yards/Open Dumps. ... . . ❑
Notes
1 If the outfall cannot be observed,go to the new most downstream inlet on the pipe network and observe if there is any flow at that point.
fpDUKE
ENERGY
Location: Marshall Steam Station
Non-Stormwater Discharge Outfall Inspection Permit No. NCS000548
Outfall ID:SW012 Latitude: 80°57'47" Longitude: 35°35'50" Date of Last Rainfall July 23, 2015 Depth of Last Rainfall Event 1.1 inches
Non-Stormwater Discharge Present: ❑Yes .. . .. . .®No
Outfall Description: 18"HDPE with flared end section
Nearby Landmark:end of intake canal -
Observations: none
Outfall Image
--•:;.',-1.' 1 ' g ),„
r �# �; '. ', Follow-up Investigation:none
•
• /r �' ,.} " x '', - • ;. Allowable Non-Stormwater Discharges Historical Follow-Up
{ 3's . Other Authorized Non-Stormwater NPDES permit
g., . � 1=11:1
i
�r, � Uncontaminated Groundwater. ❑ 0
r " 0 0
�.e . , t - Y".`,' --. Foundation Drains..
,.= —:#1. '"a ,x r z` `•4 ' r" N•,.} Air Conditioner Condensate without Added Chemicals. ..❑ 0
.� . >a .> ��t,�A. -;3 Springs 0 0
- ' ` a� .- , =� « '� .4-"'- ,� :*,s. t Uncontaminated Potable Water Discharges. .. .. . ❑ 0
�'• ' -sem 4 - ``.` t" ` .. �' -A% ', Waterline and Fire Hydrant Flushings.... . . ❑ 0
Water from Footing Drains ... ...... ❑ ❑
Drainage Area Activities(check all that apply) Flows from Riparian Habitats and Wetlands.. . . . . 0 0
Spoil Area 0 Decommissioning Activity. . . ... ❑ Fire-Fighting or Fire-Fighting Training Discharges . .... . ❑ 0
Borrow Area. .. . . . . ❑ Limestone Unloading ❑
Equipment/Vehicle Parking 0 Limestone Handling . ❑
Emergency Shower or Eye-Wash Discharges... ... . . ...❑ 0
Undeveloped/Natural Area . ❑ Gypsum Handling. . . 0
Inert Laydown/Storage . . . . . . 0 Coal Hauling .. ❑ Inspector: Patrick Blandford(HDR) Date:7/29/2015
Above Ground Liquid Storage(non-oil) 0 Coal Storage. ...❑
Above Ground Liquid Storage(oil) ....❑ Coal Handling. 0
Vehicle/Equipment Maintenance .. . ❑ Ash Handling ❑
Fuel/Oil Unloading ❑ Ash Hauling . 0
Chemical Loading/Unloading.. . . . .... . . ❑ Ash Storage/Structural Fill . ❑
Switchyard .. .. . ....❑
Landfills/Scrap yards/Open Dumps... . .. . ❑
Notes
1 If the outfall cannot be observed,go to the new most downstream inlet on the pipe network and observe if there is any flow at that point.
t DUKE
ENERGY.
Location: Marshall Steam Station
Non-Stormwater Discharge Outfall Inspection Permit No. NCS000548
Outfall ID:SW012A Latitude: Longitude: Date of Last Rainfall: July 23, 2015 Depth of Last Rainfall Event: 1.1 inches
Non-Stormwater Discharge Present ['Yes . . . ®No
Outfall Description:ditch
Nearby Landmark: lower area of old FGD construction area
Observations: abandoned sediment control basin with riprap weir outlet
Outfall Image
a"',« =_-� - "".,n`: v F s.:-? ire " 'j a� r .,' }
,:j.:4'.., • k,..4:11,..-.4.,,1-,..-. 1 ,), .,,„V;)-z,-;',...., t� ,1-,0.r t` = Follow-up Investigation:none
k A o } r, : s ,,.!'1f" ,� Nal-' `Y'"+^Yfy.4'•" ".. 4', e. ,.
w \, • ''''P• .�;.' r y � Allowable Non-Stormwater Discharges Historical Follow-Up
1 , -� rFE's :'-i" E`'" (-. `\ Other Authorized Non-Stormwater NPDES permit:
ti
,� _ ,,�>-� Uncontaminated Groundwater .❑ 0
< � ° ,• }) �t lems, "` i V i �<, t , Foundation Drains . ❑ El
'g ;-.1,-'2'•sT "'J'.-« �#,, '�• . Air-Conditioner Condensate without Added Chemicals ❑ ❑
4: .f. a ��zl ,. -r• -_ ,rh, s 4, '' w :, t;
t; r� ,.xr s ".;:,-,.,1 .:4:1:-;;',. r x w T, r Springs. ❑ ❑
Or 4'
- :t _ y� '7y{"-kly+•a Uncontaminated Potable Water Discharges. ..0 ❑
Waterline and Fire Hydrant Flushings. 0 - 0
Water from Footing Drains ❑ 0
Drainage Area Activities(check all that apply) Flows from Riparian Habitats and Wetlands ❑ ❑
Spoil Area. 0 Decommissioning Activity..... .. . . ❑ Fire-Fighting or Fire-Fighting Training Discharges.. .. . .. .❑ ❑
Borrow Area 0 Limestone Unloading . ... 0
Equipment/Vehicle Parking ❑ Limestone Handling... . ❑ Emergency Shower or Eye-Wash Discharges .. . ❑ 0
Undeveloped/Natural Area 0 Gypsum Handling . . . . . . . 0
Inert Laydown/Storage. ... . ... ............. ❑ Coal Hauling . . . . . . . El Inspector. Patrick Blandford (HDR) Date:7/29/2015
Above Ground Liquid Storage(non-oil) El Coal Storage El
Above Ground Liquid Storage(oil) ❑ Coal Handling ..El
Vehicle/Equipment Maintenance.. . ❑ Ash Handling . ....... ... . .. ❑
Fuel/Oil Unloading. .❑ Ash Hauling . ❑
Chemical Loading/Unloading. ❑ Ash Storage/Structural Fill.... . ❑
Switchyard....... . ... .. .... .. ............... . . . . .❑
Landfills/Scrap yards/Open Dumps . El
Notes
1 If the outfall cannot be observed,go to the new most downstream inlet on the pipe network and observe if there is any flow at that point.
��DUKE
ENERGY
Location: Marshall Steam Station
Non-Stormwater Discharge Outfall Inspection Permit No. NCS000548
Outfall ID: SW022 Latitude: 80°57'52" Longitude: 35°35'44" Date of Last Rainfall: July 23,2015 Depth of Last Rainfall Event: 1.1 inches
•
Outfall Description: 18"HDPE corrugated
Non-Stormwater Discharge Present: ❑Yes ®No
Nearby Landmark: north bank of discharge channel
Observations: none
Outfall Image _
,,, � "y '_ (, `/�j� �� ' - Follow-up Investigation:none
- 3"�'." _` Allowable Non-Stormwater Discharges Historical Follow-Up
1 , • ;
- s Other Authorized Non-Stormwater NPDES permit
P• '.r
'"-'r- .,x 17 F' .k.<; ,. Uncontaminated Groundwater. .. ..... . . . ❑ ❑
s -�' =°# ?,r ; - ;0 ;v� Foundation Drains. ...... .. .. 0 0
y - 'i 422, I r J'"."'' Air-Conditioner Condensate • • •
,.,,..---,',---,.:;,,,,,jr“..„).,,,-,;,,,,,,,,,,,-t ` _ _'r; ,4 a sate without Added Chemicals.. . ❑ ❑
Springs 0 0
5 .- .1-6,-
y'' �'' ,-*`" "�_ ,rt. _ Uncontaminated Potable Water Discharges ❑
-7"- ,.M 'r k'i - . "' „ ' —' ` '• Waterline and Fire Hydrant Flushings 0
Water from Footing Drains . ... ..... . .. . .. .. .. . . .❑ ❑
Drainage Area Activities(check all that apply) Flows from Riparian Habitats and Wetlands . .. ... . .'❑ 0
Spoil Area .. 0 Decommissioning Activity . . ... ...❑
Fire-Fighting or Fire-Fighting Training Discharges.... . .. ❑ 0
Borrow Area .0 Limestone Unloading 0 Emergency Shower or Eye-Wash Discharges.. .. . . ❑ ❑
EquipmentNehicle Parking .. . . . . ❑ Limestone Handling . .❑
Undeveloped/Natural Area ❑ Gypsum Handling... . . . . 0
Inert Laydown/Storage. . . ....❑ Coal Hauling . .. ❑ Inspector: Patrick Blandford(HDR) Date. 7/29/2015
Above Ground Liquid Storage(non-oil) ❑ Coal Storage . . . . ❑
Above Ground Liquid Storage(oil) .. . . . . ❑ Coal Handling . 0
Vehicle/Equipment Maintenance. ❑ Ash Handling . 0
Fuel/Oil Unloading .. . . . .. ..... . . . ❑ Ash Hauling ❑
Chemical Loading/Unloading 0 Ash Storage/Structural Fill ❑
Switchyard. 0
Landfills/Scrap yards/Open Dumps . . . . . ❑
Notes
1 If the outfall cannot be observed,go to the new most downstream inlet on the pipe network and observe if there is any flow at that point.
KE
Nev ENERGY.
Location: Marshall Steam Station
Non-Stormwater Discharge Outfall Inspection Permit No. NCS000548
Date of Last Rainfall: July 23,2015 Depth of Last Rainfall Event 1.1 inches
Outfall ID: SW023 Latitude: 80°57'47" Longitude: 35°35'50"
Non-Stormwater Discharge Present. ❑Yes . . . . ®No
Outfall Description: 18" HDPE, corrugated
Nearby Landmark: laydown yard upland of FGD facility
Observations: abandoned sediment control basin with pipe outlet
Outfall Image
Por
-PP`�" jrt '" r r.j4fi // .+' Follow-up Investigation: none
f q
' -- dam,, , 1/...t ;5U i. 1,„1.1.01 '�n
• r Allowable Non-Stormwater Discharges Historical Follow-Up
. ,� .t ,�V Fri t f
a' 0 '`; tri . �,
s�'"""k `�" r.1,',, aj t, ` / Other Authorized Non-Stormwater NPDES permit:
AJ\• , --;,:f,7=--` Uncontaminated Groundwater. . . . . . . . . . . ❑ ❑
I"' r �.. r Foundation Drains.. .... ❑ ❑
Y i A,i —V--IX--(,. .}�r tl Z `••� e.
h ".. .� f1 / - on itioner Condensate without Added Chemicals ..
dyy` ' ,f Air-Conditioner d ❑ ❑
c Vit- ��, '"' U1 m ` 0 % Springs.. . ❑ 0
1- " . `=w` rPotable Water Discharges
Uncontaminated
rt Ate' -1„,-'t:—_.:.,%.. .-.. .-;:-S ' '3.-.v .` it • ❑ ❑
Waterline and Fire Hydrant Flushings . . . . . ❑ ❑
Water from Footing Drains ... ❑ ❑
Drainage Area Activities(check all that apply) Flows from Riparian Habitats and Wetlands . .... . .. .. . ❑ ❑
Spoil Area . .... ... ...... . . . . . . ❑ Decommissioning Activity •• • ❑ Fire-Fighting or Fire-Fighting Training Discharges.... . . ❑ ❑
Borrow Area.... .......... . ... . . . ❑ Limestone Unloading. ❑ Emergency Shower or Eye-Wash Discharges . . .. .... ...❑ ❑
Equipment/Vehicle Parking.... . . . . . . . ❑ Limestone Handling
Undeveloped/Natural Area. . . ❑ Gypsum Handling . . . .. ..... .. . ❑
Inert Laydown/Storage. . . . . . .... . ❑ Coal Hauling • ❑ Inspector. Patrick Blandford (HDR) Date: 7/29/2015
Above Ground Liquid Storage(non-oil) . ❑ Coal Storage ❑
Above Ground Liquid Storage(oil)........ ... . .❑ Coal Handling
Vehicle/Equipment Maintenance . . . . .. .❑ Ash Handling ... ......... .. .. . . . . ❑
Fuel/Oil Unloading . . . . . . ..... . . . . . ❑ Ash Hauling . 0
Chemical Loading/Unloading . . . ... . ...... . . ❑ Ash Storage/Structural Fill ❑
Switchyard . . . ❑
Landfills/Scrap yards/Open Dumps. . ...... . . ❑
Notes
1 If the outfall cannot be observed,go to the new most downstream inlet on the pipe network and observe if there is any flow at that point.