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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.