ML17212B201

Circulating Water Sys Mod.

ML17212B201
Person / Time
Site:	Saint Lucie
Issue date:	11/30/1981
From:	FLORIDA POWER & LIGHT CO.
To:
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ML17212B200	List: ML17212B198 ML17212B201
References
NUDOCS 8112140189
Download: ML17212B201 (60)

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{{#Wiki_filter:~l qV FLORIDA POWER AND LIGHT COMPANY ST LUCIE PLANT-UNITS 1 6 2 CIRCULATING WATER SYSTEM MODIFICATION November, 1981 8ii2i40i89 811209 PDR ADOCK 05000535 P,.PDR p~L P C') CONTENTS Section Page 1.0 NEED FOR CIRCULATING WATER SYSTEM MODIFICATION

2.0 EXISTING

CIRCULATING WATER SYSTEM 3.0 ECOLOGY 3.1 Terre stri el 3.2~Auatic 4.0 THIRD INTAKE PIPELINE 10 5.0 CONSTRUCTION EFFECTS 12 5.1 Ecolo ical Ef fects 12 5.1.1 Terrestrial 12 5 1.2 Aquatic 13 Za I~E. CONTENTS (Cont'd)Section Page 6.0 OPERATION EFFECTS 16 6.1~Ecolo ical Effects 6.1.1 Entrainment 16 6.1.2 Imping ement 17 6.2 Other Effects 18 6.2.1 Ae sthe ties 18 6.2.2 Noise 18 1.0 NEED FOR CIRCULATING WATER SYSTEM MODIFICATION Full flow operation of the Circulating Water System (CWS)for St Lucie Unit 1 was attempted in January of 1976.At that time, the ocean portion of the system consisted of two 12 foot diameter intake pipelines and one 12 foot discharge pipeline.Separate intake and discharge canals on land conveyed the ocean cooling water to and from the plant~During initial operation, very high water levels occurred in the discharge canal, causing some flow over an emergency spillway'ecause of this, the system was shutdown.Subsequent testing of CW pumps performance in early February indicated that they were pumping about 15 percent above the design flow.However, throttling the pumps with the discharge valves to the design flow still resulted in higher than expected water level in the discharge canal and hydraulic headlosses in excess of those expected in both intake and discharge pipelines. These conditions were determined to be the result of higher than expected ocean tides, and the formation of marine growth on the pipe wall, as described below.A diver's inspection of the pipelines revealed the formation of marine growth on the pipe wall (several inches thick on the intake pipelines, about one inch thick on the discharge pipeline)along the entire length of these pipelines. Tests performed to determine the hydraulic characteristics of each pipeline indicated that the hydraulic headlosses in the ocean pipelines were high, and that the pipeline friction factor (Darcy-Wiesbach 'f')was determined to be 0.030 for the intake pipeline and 0.024 for the discharge pipeline, as compared with a cleaxr pipe h.~)f friction factor of 0.015 or less.These higher friction factors were caused by marine growth on the pipe wall and added approximately three ft and two ft of hydraulic headloss to the intake and discharge pipelines, respectively, representing 50 percent and 30 percent increase in total headlosses for these pipelines. To demonstrate that the marine growth seriously affected the hydraulic friction factor, the discharge pipeline was cleaned in September of 1976 to restore the friction factor to 0.016.A reduction of about two feet of headloss was realized.Additionally, periodic monitoring of the hydraulic performance of the ocean pipelines was initiated to determine changes in the friction factor.The results of this monitoring are shown in Figure 1.0-1.From the monitoring program, it was concluded that marine growth on the pipe wall would require treatment either by periodic cleaning of the pipelines, or by some type of control or by physical modification of the system.Since the two intake pipelines were designed to supply water for St Lucie Units 1 and 2, no operating problem was experienced for St Lucie Unit 1 on the intake side.However, when St Lucie Unit 2 becomes operational in 1983 the combined effects of headlosses, as indicated in tests simulating two unit operation, will adversely affect plant operations in thatexcessive headlosses through the intake pipelines could reduce the intake canal water level such that minimum punp submergence requirements could ~~not be met~Similarly, excessive headlosses in the ocean discharge pipeline would result in high water levels in the discharge canal and possible spillway overflow to the mangroves north of the canal.Finally, the combined headloss increases would reduce the volume of cooling water pumped through the plant such that plant temperature rise would exceed the original 24 F maximum and plant efficiency would be reduced.In 1978, the discharge canal dikes and the overflow spillway were raised to accommodate higher water levels in the discharge canal.Additionally, a periodic pipe cleaning routine was intitated for the 12 foot diameter ocean discharge pipeline.Finally, the St Lucie Unit 2 ocean discharge pipeline, which has been constructed, was increased in diameter to allow for marine growth accumulations. These actions alleviated the problem on the discharge side.For the intake side, a third intake pipeline is proposed.This new pipeline will be constructed north of the existing twin intake pipelines. Environmental impacts associated with the construction and operation of the third intake pipeline are addressed herein. .060 t PARTIAL PIPE CLEANING (100-300 FT)~SEPTEMBER 1977 I INTAKE PIPE LINES IL o.m!L I CD~.0S0 O.025 lL LL PARTIAL PIPE CLEANING IQ APRIL 1978.020.016 UNIT 1 DISCHARGE PIPELINE tx PIPE CLEANING~K~Ql Qg D~.co R UNIT 1 DISCHARGE PIPELINE INTAKE PIPELINES 1974 1976 1978,'1979 FLORIDA POWER 8 LlGHT COMPANY ST.LUClE'LIGHT ~HYDRAULIC PERFORMANCE MONITORING FOR INTAKE&DISCHARGE PIPELINES acr 88ne 1 h.1 2 0 EXISTING CIRCULATING WATER SYSZEM The circulating water system for St Lucie Plant has been described in detail in Section 3.4 of the St Lucie Unit 2 Environmental Report-Operating License. ')~l

3.0 ECOLOGY

3el TERRE STRIAL Terrestrial vegetation and wildlife in the Plant site area has been described in detail in Section 2.2-1 of the St Lucie Unit'2 Environmental Report-Operating Licensing. The following description relates to the area where the proposed third intake pipeline is located~Beach and dune vegetation near the existing intake pipelines are I characterized by dense stands of saw palmetto (Serenoa~re ens)or sea grape (Coccoloba uvifera)and sandy open areas with ses oats (Uniola e"'" observed in this area along two sampling transects are noted in Tables 3-1 and 3-2 along with estimates of cover/abundance. Important species are sea oats, which stabilize the foredune against wind and storm erosion, and other species which are of tropical affinity and consequently of interest to botanists and naturalists. The latter\include sea grape, Spanish bayonet (Yucca aloifolia), M~(sine Suianensis, lantana (lantana involucrata) and neckless pod (~go hors (1)tomentosa) (2)Land immediately north of the existing intake canal comprises of mangrove swamp, and an area used for storage of heavy equipment during construction. The swamp is dominated by red mangrove (Rhizo hors menamle).It includes scattered individuals of white mangrove-(Laguncularia racemose)black mangrove (Avfcennia genminans) and buttonwood (Conocarpus erectus)~Hydrologically, this swamp is isolated from marine and estuarine communities by State Route AlA, the intake and discharge canals, and a service road parallel to the beach.3.2 AQUAT1C Atlantic Ocean marine communities offshore Hutchinson Island which would be exposed to construction and operation of the circulating water system are described in Section 2 2.2 of the St Lucie Unit 2 Environmental Report-Operating License. CHAPTER 3: REFERENCES I.Long, R W and 0 Lakela, 1976.A Flora of Tropical Florida, Banyan Books, Miami, Florida.2.Small, J K, 1933.Manual of the Southeastern Flora, Hafner Publishing Company, Nev York. TABLE 3-1.COVER/ABUNDANCE ES1'IMATES FOR DUNE FLORA: AREA OF INTAKE PIPELINES SPECIES STATIONS: 1 2 3 4 5 6 7 8 9 101112131415161718192021222324252627282930 Uniola paniculata (sea oats)Coccoloba uvifera (sea grape)Helianthus debilis var debilis (sunflower) Cenchrus incertus (burgrass) 7 5 7 7 7 5 3 1 3 3 3 2 3 5 4 1 1 2 4 6 3 5 3 5 3 4 3 4 1 3 5 4 2 5 4 6 4 4 4 7 5 3~Croton punctatus Yucca aloifolia (Spanish bayonet)Battis maritime (bnattis)Vitex trifolia Cassuarina sp (Australian pine)Bare Sand 5 5 2 5 5 2 2 2 4 7 3 5 3 1 7 3 5 3 3 3 5 5 7 6 6 4 5 3 3 7 6 5 3 3 6 4 7 7 7 3 7 7 7 7 7 Note: Stations located contiguously along transect perpendicular to coastline. Stations 1"5 occur on eeet side of foredune;transect terminated on west side of foredune at Fp&L fenceline (road)~Each station is one meter (3.3 feet)square.Observations recorded January 30, 1979.Voucher specimens identified at University of Miami.Nomenclature follows Long and Lakela(I)~Cover abundance scale(3): 1 solitary, cover less than 6 percent;2 few, cover less than 6 percent;3~nmserous, cover less than 6 percent;4~6-25 percent cover;5 26-50 percent cover;6~51-75 percent co 7~76-100 percent cover. TABLE 3-2 COVER/ABUNDANCE ESTIMATES POR DUNE PLORA: AREA IHHEDIATELY NORTH OF INTAKE PIPELINES SPECIES STATIONS: 1 2 3 4 5 6 7 8 9 10111213141516171819202122232425262728293031 Uniola paniculata (sea oats)Croton punctatus Helianthus debilis var debilis (seaf lower)Cenchrus incertus (burgrass) Coccoloba uvif era (sea grape)Yucca aloifolia (Spanish bayonet)Serenoa repens (saw palmetto)Myrsine guianensis Sophora tonentosa (neckless pod)Lantana involucrata (lantana)Panicus rhizonatum 6 7 2 3 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 5 7 4 6 1 5 3 1 7 7 6 1 I 7 5 3 7 4 5 5 4 1 Bare Sand 4 3 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 5 4 5 7 Note: See note for Table 3-1.Stations 1-3 occur on east side of foredune. !~~r

4.0 THIRD

INZAKE PIPELINE The addition of a third intake pipeline (TIP)would reduce the hydraulic losses in the ocean intake pipelines because headlosses are a function of the velocity of flow squared (V)~For example, by adding a third 16 2 foot diameter pipeline, the maximum flow velocity would be reduced to two-thirds of the twin pipeline flow velocity (from approximately 10 fps, C to approximately 6.8 fps);the headlosses would correspondingly be reduced by 54 percent.During the several years that the intake pipeline headlosses were monitored, and before the pipelines were cleaned, marine fouling continued to grow and the pipe wall friction factor increased. An upper limit for growth and friction factor were not established ~Accordingly, I it has been assumed that periodic pipe cleaning will be necessary even with a TIP in service;however, the frequency of such cleanings can be greatly reduced, Cleaning of the TIP can be scheduled to coincide with refueling outage of one unit, without interrupting operation of the other unit.Therefore, by adding a TIP, operational reliability and flexibility of the Plant CWS systems would be greatly improved.Construction of the 16 foot diameter pipeline would be within a sheetpiled trench and would be similar in all respects to the construction methods used for both the twin intake pipeline construction in 1973/74 and the Unit 2 discharge pipeline construction in 1980/81.Construction methodology for the latter is described in Section 4-1 of the St Lucie Unit 2 Environmental Report-Operating License.10 As shown in Figures 4.1-1 through 4.1-4, the pipeline would begin at an offshore velocity cap structure located approximately 1200 feet from the Mean 1.ow Water line.The velocity cap structure would be of similar size and design to the existing structures. The pipeline would be buried for its entire length, both offshore and onshore.The pipeline would enter the east end of the intake canal at a new headwall structure. The headwall structure would be of similar design to the one built for St C Lucie Unit 2 discharge structure. A short sheetpile channel would be constructed from the headwall to the existing canal. PROPOSED VELOCITY CAP 97'TRUE NORTH 0, EXISTING VELOCITY CAP PLANT NORTH L2So.41~.SS-20 I~g%EXISTING VELOCITY CAP I ATLANTI C OCEAN 10 PROPOSED INTAKE PIPELINE~192" I.D.1 I I I EXIST INTAKE PIPELINES 144" I.D.MHW LINE DATUM MEAN LOW WATER ATLANTIC OCEAN ELEVATION 0.0 PROPOSED NEW HEADWALL AND CHANNEL DUNES MLW LINE EXISTING HEADWALL<<*>a I I Ij<<o 85 Qr<Ill I$g i II II>I Ii Ii Ii I II iI Ii I gl II ll li II II fc NEW PIPELINE'C yP>4 EXIST.PIPELINES PROPOSED VELOCITY CAP EXISTING VELOCITY CAPS PLAN-OFFSHORE VELOCITY CAPS 0 0 10 20 30 40 60 60 70 80 FEET .6 Q VELOCITY CAP MEAN LOW WATER EL 0.00~EL.6.76 FLOW FLOW EL-16 OCEAN BOTTOM EL.-18.0+FLOW EL-34.00'HEFT PILING TR EMIE CONCRETE 66)RI~Wg EEL PZ32 SHEET PILING OR EQUAL TO EL~70.0 SECTION THROUGHT VELOCITY CAP CHANNEL HEADWALL PIPE'LINE TOP OF DIKE EL+13 EL+16.0 E L.+13.00 SHEET PILING STOP LOG GUIDES TO CANAL MAIN SLUICE GATE%PIPE EL-17$0'REMIE III II I (CONCRETE I EL.-26.6 I~I I I I)I II (I I I(I IIII I JJJ JJJJ~I J.EL-27.6 SECTION THROUGH HEADWALL 8c CHANNEL+r+8~R~s Hr Cl S Qr~g n C ('~(I 4)~~5.0 CONSTRUCTION EFFECTS 5.1 ECOLOGICAL EFFECTS Construction of the TIP will probably begin in February 1982 and will be completed by December 1982, before the operation of St Lucie Unit 2.Ecological effects are temporary and impacts are primarily restricted to marine systems.5ilo1 Terre strial Construction of the TIP will follow the same practices for constructing the discharge pipelines which were addressed in Sections 4.1.3.2 and 4.1.3.3 of the St Lucie Unit 2 Environmental Report-Operating License.Terrestrial impacts include (i)excavation of a strip of dune vegetation and sand less than 100 feet wide, and (ii)preemption of less than one half an acre of mangrove swamp immediately west of the storage area and north of the intake canal for an access road and canal widening (see Figure 4.1-1)~The dune area affected is characterized by dense stands of saw palmetto and more open areas providing habitat for plant species noted in Tables 3-1 and 3-2.Dune flora is important for its role in soil stabilization, and for the assemblage of relatively uncommon plants of tropical affinity.After contours have been restored to pre-construction 12 conditions, the disturbed areas will be replanted with native dune"stabilizing species.No longterm effects on dune flora diversity or abundance are anticipated. Removal of.less than one half an acre of the mangrove swamp represents about one percent of the mangrove between the intake and discharge canals.5olo2 Aq uatic Construction of a TIP duringany part of the marine turtle nesting season (1 May to 1 September) will probably cause local, short-term impacts on marine turtles.In 1975, pipeline construction at the St.Lucie site apparently reduced the suitability for nesting of the beach near the Plant.Analysis of nesting data showed that nesting density near the Plant decreased to about 50 percent of the expected number of nests.2)However, turtles that failed to nest in the Plant vicinity probably nested elsewhere on the island as evidenced by the higher than expected nest densities in areas to the north and south of the plant'he effects of construction should be limited to the nesting season during which construction occurs.After construction ended in 1975, nest numbers were near'expected values.Additional impacts associated with construction of the TIP may include the crushing and excavation of nests by construction equipment on the beach and nest losses resultng from beach erosion.A nest surveillance and relocation program will be instituted on those areas of beach'otentially affected by construction activity, as described in Section 4.1.3.2 of the St Lucie Unit 2 Environmental Report-Operating License.13 ~,~ i~~.,)~The pipeline sheetpiled trench will disrupt the littoral flow of sand that normally stabilizes beaches and, with time, could result in some changes in beach profiles near the construction site.During storms, the process is accelerated and nests in the affected area could be lost to erosion, flooding or additional accumulations of sand~In the marine environment, impacts due to construction of a TIP would be identical in.nature to those discussed in Section 4.1.3.3 of the St Lucie Unit 2 Environmental Report-Operating License.The sheetpile trench excavated for the TIP would be 364 m (1200 ft)long and 7.6 m (25 ft)wide.The total surface area disturbed would be 2782 m (0.7 acre), raising the total amount of disruption from 55640 m (14 acres for the 2 St Lucie Unit 2 discharge pipeline alone)to 58420 m (14.7 acres).2 Thus, the temporary loss in numbers and/or biomass of benthic organisms would be five percent greater than that'presented in St Lucie Unit 2 Environmental Report-Operating License.Past history at the St Lucie site indicate that substrate stabilization and recolonization should\occur rapidly following pipeline construction. 14 0~I~( CHAPTER 5: REFERENCES I 1 Applied Biology Incorporated ABI.1978.Ecological monitoring at the Florida Power 6 Light Co.St~Lucie Plant, annual report 1977.2 vol.AB-101.Prepared for Florida Power 6 Light Co., Miami, Fla.2.Applied Biology Incorporated. 1980.Non-radiological environmental monitoring report 1979.vol.AB-244.Prepared for Florida Power&Light Co., Miami, Fla. 6.0, OPERATION EFFECTS 6.1 ECOLOGICAL EFFE CZS Operational impacts of the TIP include entrainment and impingement, as described below.6.1.1 Entrainment Section 5.1.3.1.1 of the St Lucie Unit 2 Environmental Report-Operating License described impact of entraining planktonic organisms into the circulating water system.Use of three intake pipelines, rather than two, to convey the required 2320 cfs cooling water will not increase plankton entrainment. The types and concentration of planktonic organisms will also be similar among intake pipelines due to the fact that the TIP would withdraw water from the same source volume as that presently used.Three intake pipelines, will have intake velocities lower than the 1.0 fps evaluated for the existing twin pipelines (Section 3.4.2.1 of the St Lucie Unit 2 Enviroanental Report-Operating License).Thus, to the extent that entrainment is a species-specific function of intake velocity (ie, ability to resist or avoid intake currents), actual losses of organisms for two unit operation may be less than that estimated in Section 5.1.3.1.1 of the St Lucie Unit 2 Environmental Report-Operating License.An entrainment rate of 3.6 percent of the near-field community was presented as a worst case for two unit operation in the St Lucie Unit 2 Environmental ReportWperating License. 'I 1)~8'

6.1.2 Impingement

Impingement effects of two unit operation at St Lucie were discussed iri detail in Section 5.1.3.1.2 of the St Lucie Unit 2 Environmental Report-Operating License.Conservative impingement rates for fish and shellfish were estimated to be 150,000 and 60,000 individuals/yr, respectively. These estimates assumed a linear increase in impingement with respect to capacity or velocity, and year-round operation of both units.The actual rate is likely to be lower, particularly for important species such as Spanish mackerel and bluefish which appear capable of avoiding entrainment into the pipelines. Impingement rates for two pipeline operation with average intake velocities of 1.0 fps should exceed those for three pipeline operation. Intake operation will affect mostly subadult turtles because they may frequent nearshore waters more than adults.Adult turtles are'ound inshore only during the nesting season.Studies of turtle populations in Mosquito Lagoon, at the north end of the Indian River, showed that subadults were selectively inhabiting these inshore waters.It is not known if turtles are attracted to the plant intake area or'if~they encounter the intakes by chance.However, turtles do seem attracted to underwater objects that appear to provide cover Behavioral studies of immature loggerhead and green turtles showed that turtles seek out covered areas in which to rest.The existing two velocity caps and exposed.portions of the intake probably appear to turtles as sGitable resting and foraging spots in an area otherwise devoid of bottom 17 ~e C< profile.Turtles may enter the intake pipes in response to the visual cue of the dark area under the velocity caps, or accidentally, while searching for food or swimming in the area when the water is turbid.The addition of a third intake structure may increase the entrapment rate of marine turtles.The percentage of turtles coming in contact with the plant intake that actually enter the pipelines is not known, but a TIP will increase the probability of a turtle encountering a structure.

6.2 OTHER

EFFECTS 6.2.1 Aesthetics Since the TIP is buried under the ocean and the beach dunes, operation of the TIP will offer no visual impacts.6.2.2 Noise Effects Operation of the TIP as well as the existing twin intake pipelines would not produce any noise-18 November 30, 1981 Dr.Elton J.Gissendanner Executive Director Florida Department of Natural Resources 3900 Commonwealth Blvd.Tallahassee, FL 32303 RE: APPLICATION FOR EASEMENT ST.LUCIE POWER PLANT-ST.LUCIE COUNTY THIRD INTAKE PIPELINE

Dear Dr.Gissendanner:

Enclosed please find an Easement Application for a subaqueous cooling water pipeline extending approximately 1195 feet offshore from Hutchinson Island into the Atlantic Ocean.The foregoing application and attachments are being submitted on behalf of Florida Power and Light in reference to its St.Lucie Power Plant.These materials are being submitted in an effort to obtain an Easement across sovereignty lands of the State of Florida for public utility purposes, pursuant to chapter 16Q-17.09 F.A.C.(Sovereignty Submerged Lands), We request that you review the enclosures describing the Florida Power and Light Company's proposed easement', and that you place this appli-cation before the Board of Trustees of the Internal Improvement Trust Fund at the earliest possible date.We have provided the pertinent information regarding our proposal on the aforementioned application and attachments for your convenience. Respectfully submitted this 30th day of November 1981.Sincerel I l W..Barrow, Jr ianager En lronmental Pe mitting and Programs WJBjr/pc Attachments: cc: Victoria Hamilton Easement Application Map of Survey-Pro)ect No.225 Permit Appraisal-Biological Report Circulating Water System Modification Tschinkel-W/0 Attachments Oven-W/0 Attachments pro&LE...scnvlbJ'G pion~LE November 30, 19Sl Dr.Elton J.Gissendanner Executive Director Florida Department of Natural Resources 3900 Commonwealth Blvd.Tallahassee, FL 32303 RE: APPLXCATION FOR EASEMENT ST.LUCIE POWER PLANT-ST.LUCIE COUNTY SUBAQUEOUS INTAKE PIPELINES

Dear Dr.Gissendanner:

Enclosed please find an Easement Application for two existing and one proposed intake pipeline extending approximately 1195 feet offshore from Hutchinson Island into the Atlantic Ocean.The two existing in-take lines were permitted by the Board of Trustees (TXIF)on March 22, 1972 (Permit No.253.123(2)(b)-1101). The foregoing application at-tachments are being submitted on behalf of Florida Power and Light Co.in reference to its St.Lucie Power Plant.These materials are being submitted in an effort to obtain an easement across sovereignty lands of the State of Florida for public utility purposes, pursuant to Chap-ter 16Q-17.09 F.A.C.(Sovereignty Submerged Lands).We request that you review'he enclosures describing the Florida Power and Light Company's proposed easement, and that you place this appli-cation before the Board of Trustees of the Internal Xmprovement Trust Fund at the earliest possible date.We have provided the pertinent in-formation regarding our proposal on the aforementioned application and attachments for your convenience. Respectfully submit ted this 30th day of November, 1981.Sincerel W.J.Barrow, Manager Environmental Permitting &Programs WJBjr/os Attachments: Easement A lication CC: pp Map of Survey-Project No.225 Permit Appraisal-Biological Report Circulating Water System Modification Victoria Tschinkel-w/o attachments Hamilton Oven-w/o attachments '*t iW I DMSEMvh~A?PLZCATZCN +asz.e..(o Date~-4ewe~~2Zs ~/~'PAW t 2 it~~/~~t~pe~~\t I I I APPt WV" INFORM ICAL Name Add"ess Florida Power s Lf h Cnt Pi O.Box 529100 H fern(, FL Zfn Code Telephone Ntz"eri<305)552" 3564 lame oa Agent M J Berrov Jr Hanager, Environmental Permitting 6 Programs Adtt ess of Agent 2250 Palm Beach Lakes R West Palm Beach, FL Code Telephone~art (305)684-8500 Proposed eascmenc will be used fort Public Ctility Ox)public Road Right-of-way ()?z'vate Ctilfty ()private Road Right o way ()Other ()wPfafnz Rbectr Ocean Intake Pipeline for plant cooling vator.Sect'on 16 Tovnshi p Rarge 41 Hast St.Lucio'ounty water body a"ecred by actfvitys Cfty Ft.Piorco Atlantic Ocean project is in an aquatic preserve?Yes ()yes~give Dreserve numbezt No (X)t'sc names and addzesses of the riparian land owners of procezty on each side of he pro)<<c site.Xrantc, Christ.4 Hazy Lou Cco.4 Hazy Ann North Botrtdazy> ccan I~p tuPitcr PL 33458 South Boundaryt Sand Foliar Vfllas Dev.Cb.ratte Stuart, FL 33494 Please type or print.Fill fn the blanks for all applicable information. information equested is noc applicable. so indicate by placingÃ/A in he blank.Describe the ro osed activitfcs in detail.An ocean intake pipeline and channel extensfon to convey cooling vater from the Atlantic Ocean into the intake canal is proposed.Thc 1515 foot pipeline has an inside diameter of 16 face and extends 119$feet offshore and is to be buried beneath the dunes and ocean bottom.Thc pipe terminates vith a velocity cap nf precast reinforced concrete, supported on trcmie concrete placed vithin a shcctplling enclosure below the ocean bottom.Dredged materials include sanda~slits and clay.Backfill material will be dredged sanda.The channel extension projects about 100 feet into thc cast slope of the existing 1 n t a)e canal.a See supplemental sheet 1-OVER- '1st all approvals o" cer i ication recuired tor".is ac tv<tv<Issuing Aoencv Type o'"oroval'Identification thuuber Date ot Aoolication Date of Ao"royal US NIC Construction Por4ait Docket 50-389 St~to ot florida Sita Suitability PA-74-02 Oertit icato Hay 2, 1977 Juno 10, 1975 V.S.tk)E Dredge 6 fill Pornlt 810-1679 11/23/81 Pending Bvh<~RhS<Any cocncnt hat yea feel should be cade in raga ds to this application. Sco Suppleucntal Sheet 2.S.S Ot RE IM I!FOBHA ZON SHODLD BE ATDA@ED.0 THIS APPLICATION RK?t THE APPLZCA ZON IS SUB!Q-ED.Dare: Decenher 30 1981 Signature of Applicant< II.J Barrov, Jr.Hanager Environmental Per<eittfnhg 6 Progress PV]P P GF SUPAUHV FOR FI.OR)DA POPULI=iR AND If.llQHY CQt')P'ANY'NC. ST.LUCIE UNIT+1 AND UNIT+2 SUBAQUEOUS INTAKE PIPE EASEMENT ST LUCIS COUN)'Y, f LOfllOA fe, 11.'If<AC 0 ra FD.Na<L 0 TAO INC.<~I hr.)I S.NIL>><I o~ON<T Or CONN(NC(V[FIT OA AIPT k'PAACSL A Ah (Astethf~00~00 F((1 Ih VIOTN FON Ah (1[51(al Svlavv(OUS lafaat~Irt FON I[ONION rlv(i I LICNt CD1iiaf'5 51.LVCI(~Iaaf, fhC C(NT(AL(a(Of vvl(N 15 FIONC FA~IICVLANLT 0(5CNIS(0 AS FOLLOV51 CON>>(1(t AT TN(10111 OF lhf(NS(CTION OF TNC NONIN Llh(OF 5(CIION l4, TOva511~)4 SDUTN~NA14t Il (A51, ST~Le[I(COVATT, FLDNIOA, VI IN TN([[11(i[IN(DF STAT(NDAO Ala AS SNOVN ON IN(5'IA'I(OF FLONIOA STAIC NDAO O(FAN)a[if N[011 01 VAV I<At 5((1101 10~'IIOS~101I 11(NC(SDUIN 11'll'll'i51 ALOal SAID CCaftiLINC OF 51aft NOAO AIA 1451.1)fttf;Tv(e(t NONIN~0~5)'I'A5t Ssl.ts F((f FOA IN(10111 Of NCCI~NINCI TN(a((CONTINV(aONIN 40'5)I'a51 (fit,00 Fl(f 10 TN'(POINT Df T(N1(NAIIO ~Of 5AID (A5ththl, C011AININC 440,400 54'vaa(F((1~NONVH 5 t FO.PN,NA<L 5~o'0 n STAI(FLA1(COONDINAI(5 ~as'I 114,4)0,$01 1~1$$0.014 T FL01tDA STAIN 0(11111CNT DF faahsreefaTCN rU<loaa[hf 0 1(F(1(NCC NO<0<<(NTI ~1 11 a<h\VF 1 saao>>o'~<Fo'l(AN NISN VAT(N Lth(V ATLANTIC OCEAN~ee op eo eo~1<RO'<V V Ia rr heafN P.a.h.A II 1<0'IS~DI1.$00 1 0'PANC(L A l<0)sot)I 1st P.O,T, faa(tL A 1,014 I II')))P.O.S.FANC[L~)<095~)lt~Dlf P 0~I PAN[(L I loOtS~I~I Oll coo>>o oo~oo<<<ooo)char<<<I)CALL<1 FICI PAACSL 4'h ta5(1[at 100~00 F(tT Ih VID'FN FDN a FNOFDS(0 5UNAOU(OUS I~IANC fir(FDN FLONIDA rev(N I LIDNT COF PANT$51 LVCT(FLA1f~11(C(NT(NL IN(DF VNICI<15 NON(FAATICULANLT 0(5(il~(0 A5 FOLLOVST CeahtNC(AT TNI FOI NT OF Ihf(~5(CT)01 OF fN(10111~slat OF 5(C'f101)4, 101151 It)4)ODIN, aaeG(Il[AST.51~LUCI(Clvetf~FLONIOA.vlf>>INC C(hftislht Of 5TA1[aOAO AIA AS SNDVN Da TN(51AT(Of FLOAIDA SIA'I(NOAD 0(FAN TN(hf AICN'I~OF VAT 1ar 5((1)ON~0, 1~05~1011 11(I<((50UIN tf'04'll'1 $1 ALONC 5AID C(11(NL I~(OF STAT(AOAD AIA t)SI~I)FCCII IN(NCC 10~IN 40'5)'I'ASf IO)'I~)FC(1 FON IN(POINT Of l(CINNINCI TN(N[(~Dllv$1 IS'$'A51 14)4~00 F(tT 10 IN(POINT Of I CAN I~ATION OF SAID tas(N(af~COI<TAINIAD II4~IOO SOUANC F((f, ILSIIULRLBl.QLk5', a[~~n'<UC I IOa5 DF 11(5 Sa(TCN ait hef VII 10 Uel C<5$(A(CO 111 1 Aa C<14055(0 5Uiv(TDN'5 5(AL~1.LA 105 5<0>>a 1(a(0~v(a(101 ANSTFAC I(0 FO~NIC>>1$Of VAT~(AS(N(hfs 01 NCCONO~Oa Cva(as>>i'~ , lfaalal5 savve a[itle ait e(LATIV(10 11('<<fit<at o(00('FIC 5V~F(1 Iiah)V(15C 1(~CAION<FLDNIDA Iasf coal, INID 101fN~.FLIVAIID>>5 5N011 1(i(ne ae(SA5(O DN 11(NAIIOaal C(0)tIIC r(Nfl[as DIFUN OF Ietf aae SAID (L[FITIDNS Ait IA5te 01>>af[ONAL IG(00(11(svav('I l(e[NNANN C)04, (L(FAT 101~.)SF'.LSCAI(0 1[AN IN(I(ONION~Ov(a I LID>>T avclta~FOF(a~Iaaf lafaa([AVAL Fao 51AI(~DAO AI~, 51~Le[I(Cevhff.FLDNIOA~5, Tv(-[L(fatl01 OF Nfaa VICN VAT(i aae 1(A1 LOV VA~(1 115 Otftirl~(0 41 Lf1(AI INI[NFOIAV 101 i[f1((1 U.s, 0(iaaf>>(ef OF[0~>>(1(l, aa'I!01AL 0[(A~It 110 AINDSF>>t~IC AD>>i>>f51~If le~, aaf flail 0(LA1IC svae(f TIDAL tte(ara~F5 IASte VFO~Ia(ISIO ISIS aatf lais TIDAL tro(v.I>>(Il)AL l[1(a>>aaa5 esto Aat ot5(alito as FOLLcvsf FONT rf(a((.sovfh J(tff~ta[aaaai FI(ic(1 Ills)), LATIIVD(ff'1'I 0~4l I VO[le'11,)'.caffe~AL CCOD('f IC V(N II(A(DA FUN[I('I~1101 I~Vl'1,l))NI~4~1'l 114 11 AIOVt Ntaa>>lc>>vsft~,~.011 I 1 Ill NI ANON(>>I~1'Lev Vif(~~10 5(>>INDI(5~I~(5~(a(o<<a~I I (I~11)LAT I IVDt 11'll~0'o L0%CI Iel(10'01 S'.11'IIDhaL C(00(1IC FI~11(al)itch IL(VII:01 l$$'1 II I 1)o:~~I'1 llt 11 I~ovt~(ae Nfc>>eaf(~, 10 I)~I FI 11 1~OV(NFA~Lev va f(a, 1st~~~I~11'0.$)~1)Ia.i~1~D.I ltf),~Iae Llv vaffa~I Df[0,)II 1)t~.I;1~0~Iffe)Sf<eat g of g Sheel~Slf ra.0 FOC N~110<ILD l<Ter,se 4 0 a~o 1~Y: SAIC S.HOLlY PAOPSSSIOHAL LAHC SUAY Y PlOAIOA II SOT 4TAAT IOH~44 SD OATSO:~o~o~/tti<~SIC t~t 10(>><CJ~ca>>.FD.hah.Va~~o l~1'lF NN 1.$~41~astarte lv D.P.Dr 8EPiFY d aSSOCQAY~IA(CNDINCLNS~SUNVCVDNS~PLAN<(N5 iVv<11, FLOHDA~<ovh(<I')0$ 't~I tate 53UUtXXM~fJLZLEUcAXE V(ala(~I C(ii)f1 Ivat tr(AITACN(0 ra~OF 5)ietf Of IN(N(N(0~D(SCNIN(0 FNOP(NIT 15 Tav(1~0 CONN(CI 10 IN(l(51 OF Ova NNOVL(DC(Aao~(LI(F As svav(1(0 11 TN(I I(LO VVO(~Cvi DIN(CIIO~11 aevtnita If 4).v(Fvife[i Ctil)FT fvaf TN(5 SviftT 1(t15 tv(111)NUN I(CNN ICAL SIANDA~05 I('I FOAIN 11~UL()INN I ADOFT(0~1 11(I[ONION lOANO DF LAND SVAV(VON5< FUN)DANI 10 FLONIDA SIATVf($~11 011~'fh(A(A'it 10 ASOV(CNOV10 (NCNOACNN(NIS OTNLN TNAN INO)t 5>>Vh 5VSJ(CT 0 11[OVA III I 15 NOT(0 1(~101.~ae<fcf I<~ 0 FLORIOA POWER L LIGHT COMPANY November 25, 1981 Ms.Victoria Tschinkel, Secretary Florida Department of Environmental Regulation 2600 Blair Stone Road Tallahassee, FL 32301 RE: St.Lucie Power Plant Unit No.2 Modification of Conditions of Certification No.PA-74-02

Dear Secretary Tschinkel:

We are submitting this letter to request that the Florida Department of En-vironmental Regulation modify the conditions of the above-referenced certifi-cation for the St.Lucie Power Plant Unit No.2 pursuant to g 403.516(1), Florida Statutes, and g 10 of the General Conditions of Certification. As grounds for this requested modification, Florida Power 6 Light Company relies upon the material and information contained in the enclosed Joint Application Department of the Army/Florida Department of Environmental Regulation for Activities in Waters of the State of Florida and attachments. We have pro-vided the pertinent information regarding our proposal on the aforementioned application and attachments for convenience, since these same forms are being hand-delivered this date to the Department of Army/Corps of Engineers, Jackson-ville District.A copy of the cover letter sent to the Corps has also been attached.We request that you review the enclosures describing Florida Power and Light's proposed modification, and that you amend and modify.the conditions of certifi-cation accordingly. Respectfully submitted this 30th day of November 1981.Sincerely, W.J.arrow, Jr., nager Environmental Perm tting and Programs WJBjr/pc

Enclosures:

1)Joint Application (2 pages)2)Joint Application Supplement Sheet f/1 (1 page)3)Joint Application Supplement Sheet f/2 (2 pages)4)Joint Application Drawings (6 pages)5)Cover letter to Corps of Engineers (1 page)6)Circulating Water System Modification (18 pages)cc: Hamilton S.Oven Copies of t'e foregoing letter and enclosures have been furnished to all of the individuals and entities listed on the attached service list.PEOPLE...SERVING PEOPLE qh(i i/*h.FLORIOA POWER 8 LIGHT COMPANY November 30, 1981 TO NfjOM XT MAY CONCERN: Attached for your information is an application to the Department of Environmental Regulation for Modification of Conditions of Certifica-tion No.PA-74-02 at Florida Power 6 Light Company's St.T.ucie Power Plant Unit No.2.This notification is for the construction of a 16'hird intake pipe which is explained in detail by the attached documents. Respectfully submitted this 30th day of November, 1981.Sincerely, rM4<&4 N.J.harrow, Jr Manager Environmental Permitting &Programs NJBj r/os attachments PEOPI E SERVING PEOPLE o SERVTCE SCHEDULE Mr.Hamilton S.Oven Administrator of Power Plant Siting State of Florida Department of Environmental Regulation 2600 Blair Stone Road Tallahassee, Florida 32301 John C.Bottcher, Esq.Deputy General Counsel State of Florida Department of Environmental Regulation Office of General Counsel 2600 Blair Stone Road Tallahassee, Florida 32301 Arthur Canaday, Esq.General Counsel Florida Public Service Commission Room 207, Fletcher Building Tallahassee, Florida 32301 Ms.Joan M.Heggen, Secretary Department of Veteran and Community Af fairs 2571 Executive Center Circle East Tallahassee, Florida 32301 C.Laurence Keesey, Esq.Department of Veteran and Community Affairs 2571 Executive Center Circle East Tallahassee, Florida 32301 Mr.James Dean Associate Planner Power Plant Siting Program Bureau of Veteran and Community Affairs 2571 Executive Center Circle East Tallahassee, Florida 32301 Conservation Alliance of St.Lucie County c/o Mrs.Margorie Silver Alder 304 St.Andrews Lane Fort Pierce, Florida 33450/Martin County Conservation Alliance c/o Martin Harold Hodder, Esq.1131 Northeast 86th Street Miami, Florida 33138 League of Women Voters of St.Lucie County c/o Mrs.Judith James Route 3, Box 423 Fort Pierce, Florida 33450 Mr.Estes Whitfield Senior Governmental Analyst Office of Planning and Budgeting Office of the Governor The Capitol Tallahassee, Florida 32301 Citizens United Against Radioactive Environment c/o Harold H.Alder 304 St.Andrews Lane Fort Pierce, Florida 33450 Steve Walker, Esq.South Florida Water Management District Post Office Box V West Palm Beach, Florida 33402 Sam Shannon, Esq.Treasure Coast Regional Planning Council Post Office Box 396 Stuart, Florida 33495 The Honorable Bob Graham Governor The Capitol Tallahassee, Florida 32304 The Honorable George Firestone Secretary of State The Capitol Tallahassee, Florida 32301 The Honorable Jim Smith Attorney General The Capitol Tallahassee, Florida 32304 The Honorable Gerald Lewis Comptroller The Capitol Tallahassee, Florida 32301 The Honorable Bill Gunter Treasurer The Capitol Tallahassee, Florida 32304 The Honorable Ralph D.Turlington Commissioner of Education The Capitol Tallahassee, Florida 32301 The Honorable Doyle E.Conner Commissioner of Agriculture The Capitol Tallahassee, Florida 32301 November 24, 1981 Mr.-John Adams, Chief Regulatory Section U.S.Department of the Army Corps of Engineers P.0.Box 4970 Jacksonville, FL 32201 RE: APPLICATION FOR DREDGE AND FILL ST.LUCIE POWER PLANT-ST.LUCIE COUNTY THIRD INTAKE PIPELINE

Dear Mr.Adams:

Enclosed please find a Joint Application Department of the Army/Florida Department of Environmental Regulation for Activities in Waters of the State of Florida and attach-ments.The foregoing application and attachments: are being submitted on behalf of Florida Power and Light in reference to its St.Lucie Power Plant Unit No.2.These materials are being submitted in an effort to obtain a Department of Army Permit to perform works in or affecting navigable waters of the United States and to discharge dredged or fill material into waters of the United States.The foregoing activities are being conducted in accordance with the provisions of the Florida Electrical Power Plant Siting Act, 403.501 et seq., Florida Statutes, and therefore a modification of the power plant's certification is required for this proposed activity but said modi-fication procedures obviate the need for a separate Florida Department of Environmental Regulation dredge and fill permit.We are also, this date, submitting a request to the Secretary of the Florida Department of Environmental Regulation for modification of the power plant certification, consistent with the enclosed.Thank you for your assistance and cooperation in this matter.Very truly yours,/I r W.J.arrow, Jr.Manager Environmental Permitting &Programs cc: Victoria Tschinkel,'~i PT tQRI~Secretary of Florida Dept.of Environmental Regulation WJBjr/os enclosures PEOPLE...SERVING PEOPLE JOINT APPLICATION OEPARTMENT OF THE ARMY/FLORIDA OEPARThjENT OF ENVIRONIy)ENTAL REGULATION FOR ACTIVITIES IN)WATERS OF THE STATE OF FLORIDA Refer to instruction Pamp/ilet (or explanation of numbered items encl attachments required.1 Application number (To be assigned)2.Date 24 Nov.1981 3 For official use only Day Mo.Yr.4.Name, address and zip code of applicant'.J.Barrow, Jras Hanager Environmental Permitting and Programs Florida Power&Light Company P.O.Box 529100 Miami, FL 33152 305-684-8500 6.Name, address, zip code and title of applicant's authorized aQnt for permit application coordination Mrs.~Eisa A.Bishop Associate Environmental Coordinator Environmental Permitting and Programs Florida Power&Light Company P.0.Box 529100 Miami, FL 33152 Telephone Number 305-684-8500 Wdivrward or O.H.W.or M.H.W 7.Proposed use Private I)Public[I Commercial g]Other I]IExplaininremarks) 8.Name and address including zip code of adjoining property owners whose propert/also adioins the waterway.North Boundary: Barnett Winston, 720 Gilmore St., Jacksonville, Florida 32204 South Boundary: John R Mayer&Elizabeth M Johnston P 0 Box 617, Jensen Beach Florida 6.Describe the proposed activity, its purpose and intended use, including a oescription of the type of structures, if any, to be erected on fills, or pipe or float.supported platforms, and the type, composition and quantity of materials to be discharged or dumped and means of conveyance.'nqceaa igtake pitIel(pe an/channel extension to convey cooling water from e gt~antz-c cean n o e zn a e canal z.s proposect. 'the 14)it lone nipe>zn is 18 ft inside diameter extends 1195 ft offshore and is buried betneath the dunes and ocean bottom.The pipe terminates into a velocity cap, a precast reinforced concrete structure, supported on tremie concrete, placed within a a"sheetpiling enclosure below the ocean bottom.Dredged soils vill be sands, silts and clay.Backfill will be dredged sands.Tbe cttannel qxtension projects about 100 ft into I: he east sloop of the exist ing zntaice canal..Drecfged/Excavated Filled/Oepdsitedo Volume of Material:*CY CY CY CY tdinctwaid or Watervaaad of tindward or*See Supplement sheet 7.O.H.W.or M.ILAW.O.H.W.or M.H.W.O.H.W.or M.H.W.Latin d W 27 21'36 S St Lucie 9.Location where propose.d activity exists or will occur Street address N/A s~.Florida State County Ilf known)Rge.R 41E In City or Town-Pt Pi Near City or Town 10.Name of waterway at location of the activity Atlantic Ocean SAJ FGRH 983 21 Jui 77 ~p~~I e gate activity is prono~ommence ]eb~1982 Date activity is expected to be completed Feb.1983 12.Is any portion of the activity for which authorization is sought now complete?Yes[]No[g lf answer is"Yes" give reasons in the remarks section.Month and year the activity was completed Indicate the existing work on the drawings.Type of Approval Identification No.Date of Application Date of Approval Construction Permit Docket 50-389-May 2, 1977 US NRC State of Florida Site Suitability PA-74-02 June 10, 1975 Certificate 13.List all approvals or certific tions required by other Federal interstate, state or local agencies for any structures, con.struction, discharges, deposits or other activities described in this app!ication, including whether the prolect is a Oe.vclopment of Regional impact.Issuing Agency Fla DNR Easerment No 14.Has any agency denied approval for the activity described herein or for any activity directly related to the activity de.scribed herein'es[]No[g (If"Yes" explaininremarksj 15.Remarks (see Instruction Pamphlet for additional information required for certain activities) See supplemental sheets entitled"Item 15 Remarks" 16.Application is hereby made for a permit or permits to authorize the activities described herein.I agree to provide any additional information/data that may be necessary to provide reasonable assurance or evidence to show that the pro.posed project will comply with the applicable State Water Quality Standards or other environmental protection stan-dards both during construction and after the project is complctcd. I also agree to provide entry to the project site for inspectors from the environmental protection agencies for'the purpose of making preliminmy analyses of the site and monitoring permitted works, it permit is granted.I certify that I am familiar with the information contained in this application, and that to the best of my knowled e and belief such informatio is true, complete, and accurate.I fur-ther ccr tify that I possess the authority,to und It c proposed act!vities/ Flnd<Jd'ag owe nd Light Compa y November 24, 1981 I Signature of Applicant Date W.J.Barrow, Jr., Manager, Envirooeen al Permitting and Programs 18 U.S.C.Section 1001 provides that: Whoever, in any manner within the jurisdiction ot any department or agency of the United States knowingly and willfully fa!sifies, conceals, or covers up by any trick, sclicme;or device a material fact cr makes any false, fictitious or fraudule'nt statements or representations or makes or uses any false writing or document knowing same to contain any false, fictitious or fraudulent statement or entry, shall be tined not more than 510.000 or irr prisoned not mora than five years, or both.The application must be signed by the person who desires to undertake the proposed activity;however, the applica.tion may be signed by a duly aiithorized agent if accompanied by a statement by that person designating the agent aiid agreeing to furnish upon rertuest, supplemental information in supoor t of the application. FEE: Attach CheckrJMoney Ord rs on front Payable to Department of Environmental Regulation $200 Standard form projects$20 Short forms and Cnap:er 403!jrojects only r\~~ ORIDA POWER&LIGHT COMPANY ST LUCIE PLANT JOINT APPLICATION DEPARTMENT OF THE AR'Z/FLORIDA DEPARTMENT OF ENVIRONMENTAL REGULATION FOR ACTIVITIES IN WATERS OF THE STATE OF FLORIDA ITEM 6-Volume of Material The table below has been prepared to delineate the volumes of dredge and fill material estimated for this proejct.The project has been divided into two parts.pipeline construction and channel extension. VOLl&fE OF MATERIAL ITEM DREDGED/EXCAVATED FILLED/DEPOSITED Waterward Landward of MHW of MHW Waterward of'MHW Landward of MHW P Pipeline Construction 37,700 cy 11,800 cy 25,100 cy 8,400 cy Channel Extension 31,400 cy 3,900 cy cy-cubic yard SUPPLEMENTAL SHEET 1 1 tlgt'ai L C.FLORIDA POWER&LIGHT COMPANY ST LUCIE PLANT JOINT APPLICATION DEPARPiKNT OF THE ANY/FLORIDA DEPARTMENT OF ENVIRONMENTAL REGULATION FOR ACTIVITIES IN WA'IERS OF THE STATE OF FLORIDA ITEM 15-Remarks: The proposed pipeline and channel extension is'part of the plant cooling water system.This system consists of subaqueous oc'ean intake and discharge pipe-lines extending into the ocean, canals on land connecting the ocean pipelines to the plant, and equipment and conduits in the plant area.Major portions of this system were constructed with the first unit (St.Lucie 1)and have been in operation for about 5 years.The proposed intake pipeline is for both units (St.Lucie 1&2).Construction'of St.Lucie 2 is authorized by a Construction Permit dated May 2, 1977 issued by the Nuclear Regulatory Commission (NRC).Alternatives to the pipeline, such as cooling towers and cooling ponds were evaluated in the Environmental Report submitted to and reviewed by the NRC in the Final Environmental Statement, Docket 50-389 dated May 1974.The State of Florida Site Suitability Certificate was issued on June 10, 1975.The plan'f development for the site is found in thc Environmental Report.The site for the St.Lucie Nuclear Power Plant consists of approximately 1132 acres on Hutchinson Island in St.Lucie County about half way between the cities of Fort Pierce and Stuart on the East Coast of Florida.The St.Lucie plant is sited near the center of a long, narrow island.To the east is the Atlantic Ocean.To the west, the island is separated from the mainland by the Indian River.r The site itself is generally flat.Much of it consists of swamp and, outside the mosquito control areas, the land is covered with a dense vegetation char-acteristic of Florida coastal mangrove swamps.At the ocean shore the land rises slightly in a dune or ridge to approximately 15 feet above mean low water.Of the 1132 acres owned by Florida Power and Light Company, approximately 380 acres is occupied or modified by the plant (Units 1&2)and the plant facili-ties.The effects of the construction of the pipeline and the water conveyed from the Atlantic Ocean into the plant were evaluated in the same documents outlined above.These documents state that the waters of the state will not be degraded by the proposed activity.Specific provisions designed to minimize the potentially adverse.environmental impact caused by construction are: a)construction of a temporary beach dune when cutting through the natural dunes, b)use of sheet piling and/or silt screens around excavation work to limit turbidity to less than 50 Jackson Units, and c)the disposal of spoils in approved onshore dis-posal areas.SUPPLEMENTAL SHEET 2 Page 2 of 2 Construction methods to be used for this project are anticipated to be as fo11ows: Material will be dredged from the Atlantic Ocean from within a sheetpile trench by a crane.The pipe trench will be excavated from in situ soils.Material removed from within the sheetpile will be used to backfill other'portions of the pipeline, or will be stockpiled temporarily on the ocean adjacent to the trench, or will be disposed of in approved onshore spoil areas.The ground profile along the pipeline will be restored to its original contour after construction. Con-struction equipment and materials will be brought to and removed from the site via truck transport or via barge.Barges may be off loaded at an existing barge slip located at the site on an appendage of the Indian River, or they may be moved directly to the construction site (the Atlantic Ocean).The channel extension on land, behind the dune line, will involve clearing less than 1/2 acre of mangrove swamp.The concrete headwall structure will require dewatering and excavation within a cofferdam. After completing the structure, the onland portion of the pipeline will be constructed followed by the canal and dike construction modification. Mater.from the dewatering operation will be discharged into the intake canal.Dredged material disposed of onland will be contained by dikes or other means as necessary such that any runoff will'ot contaminate the waters of the State.Dredge water will be decanted and released to either the intake or discharge canal.Rainfall runoff will not affect any part of this construction except where there are bare soil slopes during construction. Such slopes include the canal dike extension and spoil piles.Runoff from such slopes will not adversely affect the waters of the State.The pipeline will be constructed with concrete pipe.The proposed intake pipeline is sixteen feet inside diameter, four feet larger than the existing two twelve foot inside diameter pipelines previously installed in the ocean at this site.This increase in size is due to the effects of marine fouling experienced with the operation of the twelve foot diameter pipes.The marine fouling effects experienced are a heavy build-up of marine organism on the pipe wall.This build-up results in an increase in pipe friction and pres-sure drop, decrease in canal water level and a reduction in the flow of water through the system.To limit.these adverse effects, the pipelines have been peri-odically"cleaned," a not inexpensive operation. The sixteen foot diameter pipeline will greatly reduce the effects of marine growth.This reduction is due to the fact that pressure drop through the pipe-line is proportional to the square of the flow velocity.For the twelve foot diameter pipeline, with a design flow velocity of 10 feet per second (fps), the pressure drop was proportional to 100.For the sixteen foot diameter pipeline, with a maximum design flow velocity of approximately 6.8 fps, the pressure drop is proportional to 46.Therefore, the sixteen foot pipe results in a 54%reduction in pressure drop.This reduction is important as it will reduce the frequency of pipe cleanings necessary. OR AMN BY CORRECT C'.,P',c, NO.OATE IIEY IS I Oll CII AP'PPROVED: P~kgb REG!STEREO EIGI NEER IIO.21OSO R41E 270.22I'P~y%~0'll sl il 0 Cl CO ST.LUCIE COUNTY FT.PIERCE, FLORIDA/PROPERTY~64 LINE SI9 l/HUTCHINSON ISLAND I ST.LUCIE PLANT t 0 Cl CO INTAKE CANAL CONST R UCTE D UNDER PERMIT IC 66-RO21 ATLANTIC OCEAN DISCHARGE CANAL'a ALTERNATE SPOIL DISPOSAL i AREA 5 FEET ABOVE MHW 6 9 17 16yO/~c J 0~~/<<cn FORT 7)PIERCE I Ch LU Cl N V~'F O A~o 0 Fg PROJECT 0 ST.LUCIE COUNTY MARTIN COUNTY I~gpss v gP~/SPOIL DISPOSAl.PROPOSED OCEAN INTAKE PIPELINE PROJECT (SEE SHT.NO.2)16 15 (21 22 PROPERTY SCALE-STATUTE MILK;')PLAN FROM NAUTICAL CHART 11472, 19th ED.INTRACOASTAL WATERWAY 0'1 MILE 270-2P ST.LUCIE INLET LOCATION SKETCH STUART PURPOSE: OCEAN INTAKE PIPELINE DATUM: MEAN LOW WATER.ATLANTIC OCEAN ADJACENT PROPERTY OWNERS: l.GARNETT WINSTON 2.J.R.MAYER&E.M.JOHNSTON OCEAN INTAKE PIPELINE CONSTRUCTION AT ST.LUCIE PLANT HUTCHINSON ISLAND COUNTY OF ST.LUCIE STATE OF FLORIDA APPLICATION GY FLORIDA POWER&LIGHT CO.SHEET 1 OF 6 DATE DRAMII SY CORRECT V.5.NO.DATE QEVISIOII DR CH AP APPROVED: p~REGISTERED GIREER RO.21050 17'PROPOSED VELOCITY CAP TRUE NORTH~EXISTING VELOCITY CAP PLANT NORTH L26o.41'.66~I~EXISTING VELOCITY CAP~I ATLANTIC OCEAN 10 PROPOSED INTAKE PIPELI 192" I.D.NE~I I I l PROPOSED NEW HEADWALL AND CHANNEL DATUM MEAN LOW WATER'TLANTIC OCEAN ELEVATION 4 0 EXIST INTAKE PIPELINES 144" I.D.MHW LINE MLW LINE DUIVES EXISTING HEADWALL MAIVGROVE SWAMP 84'Z MANGROVE SWAMP PROPOSED WIDENING OF CANAL 40'EXISTING INTAKE CANAL TOP OF DIKE-EI EV.+13 0 100 200 SOO 600 FEET PLAN OCEAN INTAKE PIPELINE OCEAN INTAK E PIPE LINE CONSTRUCTION AT ST.LUCIE PLANT HUTCHINSON ISLAND COUNTY OF ST.LUCIE STATE OF FLORIDA APPLICATION GY FLORIDA POWER 8I LIGHT CO.SHEET 2 OF 6 DATE ,j l p pl'I\ DRAWN SY CORRECT wpc.RO.DATE REVISION DR'.CH AP'PPROVED:/WE-g~REGISTERED ERGIIIEER IIO 2f050 LANDWARD SEAWARD VELOCITY CAP INTAKE CANAL HEADWALL 320'+1200'NTS 800{NTS)DIKE DUNES/n SURF ZONE MLW E L 0.0 6'0 COVER IMIN)/j+)~i~~/p PIPELINE 12'COVER MIN.ISURF ZONE)OCEAN BOTTOM PROFILE-INTAKE PIPE I 100 0, 100 200 300 400 600 600 FEET PIPELINE SHEET PILING TO BE REMOVED OCEAN BOT.CLEAN SAND BACK FILL~~~I 0~~~~~~~~~~~~~I~~I~~~~~~~MLW EL 0.00 12 FT.COVER SURF ZONE 6 FT.COVER BEYOND SURF ZONE re,~re;i rr(AN r/jr/>INTAKE PIPE SHEET PILING TO REMAIN OR TO BE REMOVED~~'~I~PIPED.O.+6'~~SHEET PILING 3'-0+TYPICAL CROSS SECTION SUBAQUEOUS PIPE 0 20 40 60 FEET~'.~~OCEAN INTAKE PIPELINE CONSTRUCTION AT ST.LUCIE PLANT HUTCHINSON ISLAND COUNTY OF ST.LUCIE STATE OF FLORIDA APPLICATION BY FLORIDA POWER 8I LIGHT CO.SHEET 3 OF 6 DATE C.ORAIIII bY CORRECT NO.OATE REYISIOR.OR;CH APPROYED:~/uP~AP REGI STEREO ERGI REER RO 21050 CHANNEL HEADWALL PIPE'LINE TOP OF DIKE EL+13 EL+'IS.O E L.+13.00 SHEET PILING STOP LOG GUIDES TO CANAL MAIN SLUICE GATE t PIPE EL-1750'REMIE IIlII I i.CONCRETE I I I LJ LLL EL.26.5 IiII<l<ll I II II I I II I IIII I I JJJJJJJL~I EL-27.6 SECTION THROUGH HEADNALL&CHANNEL I I r OCEAN INTAKE PIPELINE CONSTRUCTION AT ST.LUCIE PLANT HUTCHINSON ISLAND COUNTY OF ST.LUCIE STATE OF FLORIDA APPLICATION GY FLORIDA POWER&LIGHT CO.SHEET 4 OF 6 DATE EI 0 RA'IIR SY CORRECT IIO.DATE REVfSIOII DR.'H AP'PPROVED:).REGISTERED ER IREER IIO.21050 MEAN LOW WATER EL 0.00.Q VELOCITY CAP I~EL.E.TE FLOW FLOW EL.16 OCEAN BOTTOM E L.-18.0+FLOW EL-3ELOO'~x r i@~EL~A SHEET PILING TR EMIE CONCRETE PZ32 SHEET PILING OR EQUAL TO EL 20.0 SECTION THROUGHT VELOCITY CAP/I I v('v OCEAN INTAKE PIPELINE CONSTRUCTION AT ST.LUCIE PLANT HUTCHINSON ISLAND COUNTY OF ST.LUCIE STATE OF FLORIDA APPLICATION BY FLORIDA POWER 5 LIGHT CO.SHEET 5 OF 6 DATE DRAMII SY CORRECT V.S.II 0.DATE AEY IS I OII DR CH APPROVED: REGI STERED EltGI IIEEQ IID.2I050 PLANT NORTH NTS~Pp 0 Qadi 44'-'I PLAN SHOWN WITH VELOCITY CAP PLAN S lOWN WITHOUT VELOCITY CAP y~C ('P'.il I li E, NEW PIPELINE C.EXIST.PIPELINES PROPOSED Vf LOCITY CAP EXISTING VELOCITY CAPS PLAN-OFFSHORE VELOCITY CAPS 10 0 10 20 30 AO 60 60 70 00 FEET I'i I~~OCEAN INTAKE PIPELINE CONSTRUCTION AT ST.LUCIE PLANT'HUTCHINSON ISLAND COUNTY OF ST.LUCIE STATE OF FLORIDA APPLICATION BY FLORIDA POWER Si LIGHT CO.SHEET 6 OF 6 DATE 0 I~8}}