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HomeMy WebLinkAboutNC0001422_Issuance of Permit_200606281 � l J� V..I7 Progress Energy J U N 2 8 2006 DEN - WATER QUALITY SURFACE WATER PROTECTION SECTION Harry Sideris Plant Manager File No.: SUT 12520 -B -0 1 July 26, 2006 NCDENR -DWQ 1617 Mail Service Center Raleigh, NC 27699 -1617 NPDES PERMIT NO. NC0001422 RE- ISSUANCE APPLICATION Dear Mr. Gil Vinzani: The current National Pollutant Discharge Elimination System ( NPDES) Permit No. NC0001422 for Progress Energy Carolinas, Inc (PEC) L. V. Sutton Electric Plant located in New Hanover County expires on December 31, 2006. PEC hereby requests that the NPDES permit for the facility be reissued. Enclosed is EPA Application Form 1 — General Information and EPA Application Form 2C — Wastewater Discharge Information, both in triplicate. The L. V. Sutton Electric Plant is expected to continue to operate over the next five years essentially as it has previously with the new ash pond discharging to the Cape Fear River via Outfall 001 on a more routine basis (i.e., several times per week to daily). When the effluent of the new ash pond is aligned to discharge to Outfall 001, there will continue to be anywhere from 0 to 0.5 MGD of new ash pond effluent discharging into the cooling pond. At times that the new ash pond (Outfall 004) is not discharging to the Cape Fear River via Outfall 001, all of the new ash pond effluent will discharge to the cooling pond. t Thus for our permit renewal, we conducted two sampling events. One sampling event consisted of (�e cooling pond discharge only and the other was a combined sample of cooling pond discharge and �J new ash pond discharge. The samples were analyzed and the highest v uhe�!o sample sets was used as the maximum daily value_for Form V7n ce and Effluent Characteristics Part A, B, and C. The results offit e two sample sets were averaged together to reflect the maximum 30 day value, and the results of the two sampling events along with DMR data were used to calculate long term average values, where appropriate. A value of 12.84 MGD (long term average value) was used to calculate mass for all values in Item V. Part A, B, and C. Progress Energy Carolinas, Inc. Sutton Steam Plant 801 Sutton Steam Plant Road Wilmington, NC 28401 2v�6 1�e-' j ) L V Sutton Electric Plant NPDES Permit No NCOOO1422 Reissuance Application June 26, 2006 With re- issuance of the NPDES permit, PEC requests the following: • Reduce the monitoring frequency for total residual chlonne 'from weekly to monthly at Outfall 001. Based on past DMR's (February 2003 through December 2005) the TRC- concentration has been less than 1.2 gg/L'in every test. Monthly monitoring should be v` sufficient to demonstrate compliance with the effluent linutations. Y° • Reduce the monitoring frequency for, copper from,monthly to quarterly at Outfa110,01. Based on past DMR's (February 2003 through December- 2005) the average copper concentration of the discharge over that°penod of time has been 6.9 gg/L, with 10 of 28 tests below the detection limit. Quarterlymonitonng should be sufficient to demonstrate compliance with the effluent limitations. • Reduce the monitoring frequency for selenium from weekly to monthly at- Outfall 00,1. 1 f Based on past DMR's (February 2003 through December 2005) the selenium concentration in the discharge has averaged 11.9 gg/L over 82 sampling events. Monthly monitoring should be sufficient to demonstrate compliance with the effluent limitations. • Reduce the monitoring frequency for arsenic from morithly`to quarterly at-,Outfall 001. � Based on past DMR's (February 2003 through December- 2005) the average arsenic discharge concentration at the outfall has averaged 11.8 gg/L over 27 sampling events'. Quarterly monitoring should be sufficient to demonstrate compliance with the effluent limitations. L • Reduce the monitoring frequency for toxicity from monthly to quarterly at Outfall 001. Based on past DMR's (February 2003 through December 2005) the average survival 'rate in every test over that period of time has been greater than 99% Quarterly monitoring should be sufficient to demonstrate compliance with the effluent limitations • Reduce the monitoring frequency for total suspended solids and oil and grease at Outfall 002 and Outfall 004 Currently the permit required frequency for both is twice per month. Based on past DMR's (February 2003 through December 2005) the average TSS concentration of the discharge over that period of time from Outfall 002 is 2.8 mg/1 and at Outfall 004 4.3 mg/L. Oil and grease concentrations over the same period of time, has averaged 2.3 mg/1L at Outfall 002 and 2;2 mg/l at Outfa11004 Monthly monitoring should be sufficient to demonstrate,compliance with the effluent limitations. L V Sutton Electnc Plant NPDES Permit'No NC0001422 Reissuance Application June 26, 2006 Also Sutton Plant requests the Division consider suspending, the requirements for Outfall 003, r� Metal Cleaning'Wastes. The Plant's current method (in use for the last 15 years) of disposal of these chemicals is to'mcmerate them in the boiler, thus no discharge However, the plant would like to reserve the option to discharge metal cleaning waste if necessary through Outfall 003, with f week's notice to the Division. If there are any questions regarding the enclosed information, please contact Steve Cahoon, Environmental Specialist at our Environmental Services Section, at (919) 546=7457. Enclosures cc: Wilmington Regional Office — DWQ Respectfully yours, J, I Harry Sideris Nease printol type,inrthe unshaded areas only Form Approved OMB No 2040 -0086 Approval expires 5 -31 -92 ffdl- in, areas' are spaaed,for ehte'type, f e , 12 charactersfinch) FORM o US ENVIRONMENTAL PROTECTI.ON AGENCY 11 EPA I D NUMBER'}��My�,y' EPAGENERAL INFORMATION S IT/Al C G Consolidated Permits Program H NCD O`0 0 8,3 0 6 4 6 .GENERAL (Read,the 'General7nstructions' before starting) 1 1 I z 131,141 1 -5 '1 ma �ir<•• -• 14"M ^Vi` 'Sts sh4 a 1 1 LABEL ITEMS r'�s` `'tµ GENERALINSTRUCTIONS ka I a'prepnnted label'has been provlded,.affix It m MBER §ar� � sx1a �w° r' tt g R f 9 P t ? t y� }FV ;, the designated space 'Review the Information �°1`, „' ur carefully „If any of it is incorrect, cross through it 1'r;lll FACILITYINAMEi� n.kl�y�vfx:, r�- r'' f w ,� +,.•s ;� and enter the correct data in the appropnate,fill- _y in area below Also, if'any of the preprinted data „* r ii -_ '_,r{4 �trinia'r ? ,�x ;� w ;t {', aryl .r `f z agc r �' is absent (the area to the left of the label space -FACILITY a x a 'qtr - e�_ ,.. '•�x.aa � ', s - V -- fl;,` , = "'� 3 �� /” ^` rtr, i = lists the Information that should appear) , please MAI 'ING,ADDRESS +'' R } s •'PLEASE; PEACEAMBEL IN THIS`SPACE, sr „ �'? F �, - �K - sr.. s ,° " v �' _ '3 ? provide It in the proper fill-in areas) below If the f w ` ' `' 1SS 1 label is complete and correct, you need not i t KX v fii.e,,1i rsst'?k a s 111 P Y .,> _ 'Go- ^, n,3 -tiiF'*y5 ^n`s ;�` �,.._. r ,• i`-s,:.1 -','" 3" = °'_ a a' ; ;�.�{ z� complete Items 1, III, V, and VI (except VI -8 i? e sw l tins +��k u 'fZA'!tl 'S' t�v 13",x' dI:J4;isF � Fl " � a� r �n' which must be completedregardless) Complete FACI'L'ITYt l�y�'w tr YadH`e s tt o a aJ m —r'�, H :W �s•,<� sk'��drei ,�;f 3w i ;�?rfr� all items,if no label has been provided ,Refer to Lt ", X111 z�a�,€°mw,g?3 �-uu '3"- " m LOCATIONfi '}r);y�" k ' " ^a' "' the mstructionsfor detadeditem descnpUonsand ,S nom' e ),` 1 `k' 'il'"v, I t- �1�_?' ?2, r�* m for the legal authorizations under which this data I t.1�,. '�%" '°-tda> 3 y «' ` °a _ i' i'?',� is collected f .d4r 'lx ri '. '. sF� ll,tiI_ "fir ;'� ��,��zrti''QIkS °er II POLLUTANT CHARACTERISTICS FY r �1�IrE. �,r, ,�,�",f ;'n -lt� ekffl yci' 1 mil` r� r INSTRUCTIONS Complete A through J to determine whether you need to submit any permit application forms to the EPA If'you answer "yes" to any questions, you must submit this form and the supplemental form listed in the,parenthesis following the,question Mark "X" in the box in the third column if the supplemental form is attached If you answer "no" to each question, you need not submit any of these forms You may answer "no" if'your activity is excluded from permit requirements, see Section C of the instructions See also, Section D of the instructions for definitions of bold -faced terms. SPEC IFIC °QUESTIONS I MIRK "X" I YES No ATTACHED SPECIFIC QUESTIONS 1 MAP: FORM ) YES No ATTACHEDI A Is this facility a publicly owned treatment works B Does or will this facility (either existing or proposed) Which results min a discharge to waters of the U.S? X include a,concentrated animal feeding, operation or X (FORM 2A) aquaticlanimal production facility which results in a 16 17 18 dischar e,to waters of the U S ' (FORM 2B g ) 19 20 21 C Is thissa facility which currently;results'in discharges to X D Is thisaa proposed'faci I ity ' (other, than those described X waters of the U S. other than those descnbed`in A or B °X In A or 8' above) whichzwill result in, a discharge to above? (FORM 2C) 22 23 24 waters of'the U.S? (FORM'2D) 1 25 26 27 1 F Do you or will you inject at this facility industrial or E Does or will this facility treat, store, or dispose of municipal effluent below the lowermost stratum X hazardous wastes? (FORM 3) X containing, within one quarter mile of the well bore, 28 29 30 underground sources of drinking water? (FORM 4) 31 32 33 I G Doyou orwillyou injectatthis facility any produced water H Do you or will you inject at this facility fluids for or other fluids which are brought to the surface in special processes such as mining of sulfur by the connectionwit h conventional oil or natural gas production, Fresch process, solution mining of minerals, in situ inject fluids used for enhanced recovery of oil or natural gas, or inject'fluids for storage of liquid hydrocarbons? X combustion of fossil fuel, or recovery of geothermal X (FORM 4) 34 35 36 energy? (FORM 4) 1 37 38 39 1 I Is thisrfacdlty a proposeck stationary source which is J Is this;facility a,proposed stationary source which'is one of the, 28 industrial categories ,listed in the ,NOT one of the 28'industrlal,categones listed in the instructions and which will potentially emit -100 tons per, instructions andiwhich'wlll,potentially erii� 256tons per year of any, air pollutant regulated under°the Clean Air X year of any am pollutant regulated; under the Clean Air X Act andmay affect or be located in an,attainment area? Act and'mayaffect or be located in an attainment area , (FORM 5) 40 41 42 (FORM`5) 43 44 45 f, �� III NAME OF FACILITY tmv�x� �� �2i -vJA,, t;!' Y✓'' :tSrv?lF,MY- L',[t�li[r..�7'ttM1 Ix c,ri�Kl+:i+���n.i Wei ie�J4�.ic'�1.•r#�R3 u�� SKIP L. V. Sutton Electric Plant 115 16 -29130 69 ) w ?r ; #'�:i -�°%- ry' 6Et 'b t dqi'n1� 'Ti � ill, � Tr4' R 3rt��i'- �:-�3'��`d �I,}r iw''4T"eti�'°i- �' x�.A* =s'a 6'i 3�-a8 r : t ° �n �. � IV FACILITYCONTACT I',,� 3 ti�"= + �'°�,�'�; ;�� `�ai�+�r':xta✓ � ;a3yaY '.� t- 'L�li '�"�;��}}'.<i fL ��`'��`" �'� ' a?-.';a'. h 'a�} � '�F itt - c� _,ui.rikl:a ,�3a1.S;s'i e: ,U A NAME & TITLE (last, first, & title) .� Mz B PHONE (area code & no) I F2 Harry 0ideris - Plant Manager- 910 1 343 13201 1 5 '16 45. 146 - 481 - 49 511 t 52 - 55L V FACILITY MAILING ADDRESS 'k,uvr✓ 6a^'`rn „M1'`° °i.r'W. ia'�"P'I� ^..^ "F. �,"o`'• "!''s,,rsi�i'a I A STREET`OR`P O BOX 801 Sutton Steam Plant Road III 1 °S'' 15 - B CITY OR TOWN J Wilmington 1 16 - VI FACILITY_ LOCATION�f I A STREET 1801 Sutton St 5 1 15 16 I - New Hanover 146' — Wilmington C 1 151 16 EPA Form 3510 -1 (8-90) - 45 IC STATq D ZIP CODE I , ROUTE NO OR'O,THER SPECIFIC IDENTIFIER I eam Plant Road - 451 B COUNTY NAME' I C CITY'OR TOWN 701 D STAT, E ZIP CODE NC 2,8401 401 41 42 147 - 511 F COUNTY CODE 1 (If, known) 52 - 54 1 CONTINUE ON REVERSE SiF ENJS6/F 1 rONTINUEID FROM THE FRONT VII SIC CODES (4 digddn order ofpnorrty) MIMI U-N�a�a��t.'#!�: °k:,,> -.` A FIRST B SECOND c 4 911 (specify) I (specify) !Electric Power Services 5 16 19 115 16 - 191 C THIRD D FOURTH �J (speedy) � I (specify) 1 I175�16 -� 19 J15 16 - 1 9 Vill OPERATOR INFORMATION I A NAME I B' Is the name listed In c Item VIII -A also the s Carolina Power & Light d /b /a/ Progress Energy Carolinas, Inc. owner 15 16 55 66 YES NO C STATUS OF OPERATOR (Enter the appropriate letter into the,answerbox, if "Other, " specify) D PHONE (area,code & no) F= FEDERAL M= PUBLIC (other than federal or state) I – I (speedy) c S = STATE O = OTHER (specify) P 910 1343 3201 P= PRIVATE Il-- ss ----�� (specify) Public Utility 9 z 211 22 251 -- E STREET OR P O BOX P. O. Box 1551 26 — — - - 55 IF' CITY'OR'TOWN G STATE H ZIP CODE IX INDIAKIAND C Is the facility located on Indian lands BI, Raleigh I NC 2760'2 YES n NO 151 16, _ _ 40 41 42 ,47 51 52 z w+ —� 5�.,r ,�yr r, w rhT .*411 '" 7 ti e c,.•1 ,� i �S'•. X� EXISTING ENVIRONMENTAL PERMITS - A,NPDES (Discharges tolSurface Water) D P,SD (Air Emissions from,Proposed Sources) g N l NC0001422 9 p 1 115 16 17118 - 30 151618 - 3 - -- B UIC (Underground Injection of Fluids) E OTHER (specify) I c T I I �c T I. WQ000'0'020 (y) 9I U ! I I I ' N. C.. Ash Utilization 115 16 17118 30 15 16 11,118 - Jspecif - C RCRA (Hazardous Wastes) E OTHER (specify) C T c T I (specify) l NCD000830646 165 -8'8 15 6 17 18 — 30 5 16 17 18 301 CAMA Permit for Intake Structure I XI NL4P Attach toI this, application a topographic map of the area extending to at least one mile beyond property boundaries The map must show the outline of'the facility, the location of each of its existing and proposed Intake'and discharge structures, each of Its hazardous waste treatment, storage, or disposal facilities, and each well where It Injects fluids underground Include all springs, rivers and other surface water bodies In the map area See Instructions for precise requirements XII NATURE'OF'BUSINESS 'raw' `' ' 6T" �' s -- — - (Provide a briefdescnphon) �,h� �.�� �:a4 {'.�`��>�„��r'"���'���'��t' This is a steam elecric generating facility consisting of 3 coal fired units with a nominal net capacity of 613 MWe and three Internal Combustion (IC) Turbines with,a nominal net capacity of 64 Me. XIII CERTIFICATION (see. instructions ) ]����j��`�?�t`�"Ixi�Z� I certify under penalty,of law that -I have personally examined and am familiar with the information submdted'in this application and aff-attachments and that, based on.my inquiry of those persons immediately responsible for obtaining the information contained in the application, I believe1hat'the information is true, accurate and complete I am aware that there are significant penalties for submithng,false information, including the possibility of fine and imprisonment A NAME & OFFICIAL TITLE (type or print) Harry 'S`ideris Plant Manager COMMENTS,FOR;OFFICIAL USE ONLY c I 5 16 EPA Form 3510 -1 (8 -90) C DATE SIGNED -s ,r z� SkFk4� ,c , SW EMF64F 2 d* V. Attachment 1 — Form 1 — Item XI — Map ,v Sutton Stearh Electric Plant New Hanover County Page 1 of 2 <' `v II h Progress Energy Carolinas, Inc. L V Sutton Electric Plant National Pollutant Discharge Elimination System Permit Number NC0001422 Attachment-2 Form 2C - Item II -A Flow, Sources of Pollution, and Treatment Technologies Stream Average Flow (MGD) Comments A 49 Pump Capacity - flow is intermittent B 589 Totals for Units 1, 2, & 3 C 25-30 Outfall 004 - Optionally routed to Outfall 001 or to the cooling pond D 583 Totals for Units 1, 2, & 3 E 1.5 (estimate) Net forced evaporation F 25-30 Totals for Units 1, 2, & 3 G 001 Maximum, flow H Oil Maximum flow 1 0. 17 Maximum flow J 001 K 25-30 Outfall 002 L Variable (0 - 380) Outfall 001 - Normally continuous 25 MGD (2 5 MGD ash pond effluent plus 12 5 MGD cooling pond blowdown) M 008 N 0 003 O 005 P 67 S 0 16 T 001 U 10 (estimate) _ V 0 145 Outfall 003 - Normally disposed of by evaporation in the boilers W 25-30 Ash sluice water for Units 1, 2, & 3 routed to old ash pond during maintenance on'new ash pond X Variable (0 - 3 0) Discharge to the cooling pond Y Variable (0 - 3 0) Discharge to the Cape Fear River 1 Mater Go�rty water p °tab \e � Cape f- eat oGa oU aar 1 et cram Fre\,.- Y Nn at°rc� G E o\ew ctt Icptant P m ent°2 oo S t F �hafi w te tAc Sem2 °fi P age 2 Carolina Power & Light Company _ L. V. Sutton Electric Plant National Pollutant Discharae Elimination Svstem Permit Number NC0001422 Attachment 3 Form 2C - Item II -13 Flow, Sources of Pollution, and Treatment Technologies The Sutton Plant is a coal -fired electric generating plant with three units. Three Internal Combustion (IC) turbines are also on the plant,site The plant has an 1110 -acre (6,900 acre -ft) off - stream cooling pond on the east side of the Cape Fear River approximately ten river miles upstream of Wilmington Water is withdrawn from the Cape Fear River as required to make up evaporative, seepage, and blowdown losses from the cooling pond Chemical constituents contained in this discharge will, in part, be representative of the naturally occurring chemical quality and quantity of the intake water and will also have chemical constituents of such quality associated with similar discharges for fossil generating facilities of this size, type, and in this geographical location Either all or part of the elements in the Periodic Table, either singularly or in any combination, may from ,time,to time be contained in the discharge Recirculated Coolinq Water This flow provides condenser cooling water for generating units 1, 2, ,and 3, The total combined flow of 583 million igallons,per day (MGD) is discharged into the pond and routed through the pond by baffle;dikes to achieve maximum surface cooling efficiency before reaching the condenser cooling water intake structure to,be used again. Cooling of the pond is achieved primarily by evaporation from the pond surface, which is estimated to consume approximately 5 5 MGD above natural evaporation rates during times the units are in full operation Control of biological fouling on heat exchanger surfaces is accomplished by feeding a mixture of bromine and chlorine into the intake structure approximately one hour once or twice a week with a residual oxidant concentration of 0 2 ppm or less in the Outfall 001 discharge Non - contact Coolinq Water Non - contact cooling water is withdrawn from and returned to the cooling pond It provides irfdirect cooling for various plant equipment by absorbing heat as it passes through a heat exchanger No direct contact is made with any other equipment or process. Control of biological fouling on heat exchanger surfaces,is accomplished by feeding,a mixture of bromine and chlorine approximately one hour per week with a residual oxidant concentration of 0 2 ppm or less in the Outfall 001 discharge. �y Carolina Power,& Light, Company` L. V. Sutton Electric 'Plant National Pollutant DischarcleaElimination Svstem Permit NurrmberNC0001422 Coal Pile'Runoff Stormwater runoff from the coal pile is,routed,to,the old ash pond, which provides neutralization and' sedimentation treatment During maintenance activities, sludge removed °from' catch basins, sumps, etc ,may be,transported'to the old and /or new ash pond for, disposal 'Storm Water Runoff Stormwater runoff from the plant-area that'includes parking lots, switchyard, and the IC Turbine area is collected in yard drains which flow to the cooling pond All other,yard and plantidrains, which Imaycontain- pollutants from spills or leakage from plant processes,are routed to one +of,'two retention'basins, and pumped from there to the ash ponds,for treatment During maintenance activities, sludge removed from catch basins, sumps,,etc maybe transported to the old and /or new,ash pond for disposal Ash Sluice Water Fly,ash and'bottom ash from all three�units is hydraulically conveyed by an ash sluice pipeline to the, plants newlash pond, which provides ,sedimentation and oxidation treatment Alternatively,, fly and bottom ash may be conveyed to the old. ash pond for treatment while maintenance activities are performed' on the new ash pond A Rotamix Urea infection system and Rotating Over Fire Air (ROFA) System were installed' on the - Unit 3"boiler in the Spring of 2005 These systems are used jointly to employ high velocity' airun jection and urea to reduce nitrogen oxides (NOx) emissions dunng the ozone season 2006 '(approximately May through September) After 2006 the ROFA „Rotamix system will,be used throughout the year Anyun- reacted ammonia will' be absorbed into the fly ash,and will be carried to the ash pond via ash sluice water Currently, as part of4ouf ash treatment system, we have a drip that feeds either acid or caustic (depending on�season andtype of coal burned) into the,ash sluice line,to helpwith the pH adjustmerit of the ash sluice water'before it mdischarged to the ash pond Ash Pond Discharge Effluent'from the new ash pond can be discharged'to either the cooling pond or °,to the Cape Fear River When the effluent from the new ash pond is routed to the Cape Fear River, up to approximately 1 0 MGD will still be discharged to the cooling pond Effluent from the, old ash pond; di'scharges'to the cooling pond Coolina Pond Discharge Discharges from,the cooling pond to the,Cape Fear River have occurred on a sporadic basis Within the, next perm it, cycle it is expected'to discharge on a more regular`basis (e.g , from,severaCtimes per week'to daily) On an intermittent, monthly,),basis, the blowdown from the cooling pond ,,to,the river may reach approximately 350 MGD for a duratiomof 1 to 2 days 2 Carolina Power & Light Company L. V. Sutton Electric Plant 'National Pollutant Discharae Elimination Svstem Permit Number NC0001422 Domestic Wastes Sanitary wastes are treated by an onsite septic1ank and drainage field that is permitted by the New Hanover County'Health Department The septage is exempt from the 40 CFR 503, standards Progress Energy Carolinas, Inc will submit appropriate information to the EPA if required Low - Volume Wastes All waste streams not identified above fall in the category of low= volume wastes These wastes include plant drains, which convey miscellaneous equipment leakage, equipment drainage for maintenance, equipment washdown water, sampling streams, service water,system blowdown, and water treatment wastes Plant process water is treated prior to use by an ion- exchange demineralizer which must be periodically regenerated with solutions of sodium chloride, sodium hydroxide, and sulfuric acid Alternatively a vendor may be used to provide treatment of plant process °water Blowdown of boiler water to control boiler chemistry is routed through low- volume prior to discharge in the ash pond Boiler vacuuming sediment is routed through low- volume prior to discharge to the ash ponds The precipitators are water washed approximately every 1 to 3 years with the wastewater discharging to the ash pond Drains from areas likely to contain oil-filled equipment or storage are routed through an oil-water separator with the effluent routed through low volume prior to discharge to the ash pond Waste oil is disposed of according to the appropriate regulations During maintenance activities, sludges removed from catch basins, sumps, etc may be transported to the old and /or new ash pond for disposal All low volume wastes described above are routed by gravity flows to the retention basins at the plant and then to the ash ponds for treatment by neutralization, sedimentation, oxidation, and absorption The air pre- heaters and electrostatic precipitators are water washed approximately every one to three years with the wastewater discharging to the ash pond via the ash sluice lines In many cases added chemicals are consumed or chemically altered during the plant processes Only trace - amounts might be recoverable in water entering the ash ponds. Since the ash ponds serve as a final treatment basin and receives significantly greater volumes of water from other inflows, detectable levels of these chemicals would not occur in ash pond discharges Chemical Metal Cleaninq Wastes The boilers are chemically cleaned approximately every 5 to 10 years using one of the following chemical processes 1) citric acid, ammonium hydroxide, Cronox inhibitor, sodium nitrite, ammonium bicarbonate, K, t, Carolina Power &^ Light Company L. V. Sutton Electric Plant National Pollutant Discharge Elimination Svstern Permit Number NC0001422 or 2) Tetraammonium Ethylenediammetetraacetic acid (EDTA),and,A300 inhibitor In addition'th-e ,following dhemicais-can be used if`needed- soda ash, ,ammonium persulfate, ammonium bifluoride, sodium bromide,,and liyd`rochlo-ric acid The cleaning solution and nnses,are.stored on site ,for disposal by evaporation in the boilers `Typ'ical cleanings would result m awaste,�of approximately 50,000 gallons for Unit 1,, 70,000 ,gallons for Unit 2, 140,000 gallons for Unit 3- Should chemical metal cleaning wastes not be,evaporated, they,wdl be,treated by neutrahzationand precipitation in retention'basins prior to discharge to the,ash,ponds Fire Water,Svstem Several plant heat exchangers are cooled by the fire water system. Control of biological',foulmg on heat exchanger surfaces ,isxaccomplished by brommatmg approximately one hour per week with a residual _ bromneiconcentration of 0 2 ppm or`less -Ash Reclamation In the event a practicable market becomes available, Progress Eriergy, Carol inas, the may exercise the option of reclaiming ash, from' its ash ponds However, due to the limited scope of'such an operation no additional discharges would,be expected Former Ash Disposal Area The, old ash pond was listed as a °potential Superfund safe in the early 1980s�dunng the'mitial development of'the,State Superfund Program TheAdld ash pond is still listed on the State's Inactive Hazardous'Waste Sites .List- `Pesticide Usage in Sutton Cooliriq Pond Herbicides are used when needed to control nuisance�aquatic vegetation These herbicides are applied by licensed applicators, or persons under'the immediate ,supervision of a'licensed applicator, m' accordance. ,,with the manufacturer's instructions Pesticides are used when needed to perform biological assessments of fish populations These ,pesticides are applied by lidensed applicators, or persons under the, immediate, supervision of a licensed opplicator, in accordance'with the manufacturer's instructions 4 06 4 L Woodburn A 0 V') `� Island Sutton Plant Location Map Ur KOTAA \ w- &I *r_._ a &C Progress Energy f. j h' F CO . f CIA Tanks J Makeup Intake + i r} d i ii� if Heatedf Water to Cooling - '� -.�•` Pond t CA r _' Tanks Plant Site ; — UNS -- �" Recirculated ; Cooling Water back to Plant �_ ntC— �_• � ;� � 0 0.6 1.2 1.8 2.4 3 km P1 0 0.4 0.8 1.2 1.6 2 N2 Map center is UTM 18 224327E 3799059N (WGS84 /NAD83) Castle Hayne quadrangle M= -8.944 Projection is UTM Zane 18 NAD83 Datum G= -1.689