ML20154B949

Forwards 851216 Application for Approval of Temporary Substitution of in-stream Monitoring of Dissolved Oxygen Levels in Place of 59 F Constraint on Withdrawals,Filed W/ State of DE River Basin Commission.Related Correspondence

ML20154B949
Person / Time
Site:	Limerick
Issue date:	01/24/1986
From:	Conner T CONNER & WETTERHAHN, PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Chilk S NRC OFFICE OF THE SECRETARY (SECY)
References
CON-#186-837 OL, NUDOCS 8603040515
Download: ML20154B949 (41)

Text

21 i Aw OrricEs MELATED COdfdSl%CENCt CONNER & WETTERH AHK, P.C. ' .

17 4 7 l'E N N S Y LVA N I A AV E N U E.$' W.,

TROY B. CONN ER,J R. WAs111NOTON D. C. J OOOO '

MARE J. WETTERHAMM ROBERT M. RADER

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J ES SICA H. IAVERTY '86 JAN 27 A10:24 "I'* " w ic"o" ROBERT H. PUBL January 24, 1986 f202' 83 03900 EKRNHARD O. BECH HOEFER OFFld F Sud. ;:

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C0CKETING !. SE R VK cani.E AnonEss arou w BRANCH Mr. Samuel J. Chilk Secretary U.S. Nuclear Regulatory Commission Washington, D.C. 20555 In the Matter of Philadelphia Electric Company (Limerick Generating Station, Unit 1)

Docket No. 50-352 O L_.

Dear Mr. Chilk:

As a follow-up to my letter of September 23, 1985 to you, I am enclosing a copy of an applicatior. filed with the Delaware River Basin Commission under Section 3.8 'of the Compact for approval, during 1986, of the temporary substi-tution of in-stream monitoring of dissolved oxygen levels in place of the 59'F temperature constraint on withdrawals for the Limerick Generating Station inco porated in DRBC Docket No. D-69-210 CP (Final) (November 5, 1975) and of the transfer of the existing consumptive use allocations of Titus Generating Station Units 1, 2 and 3 and Cromby Gen-erating Station Unit 2 to Limerick Unit 1 when docket limitations in effect would otherwise preclude the consump-tive use of Schuylkill River water for Limerick.

For your information, the attached application was considered by DRBC at a hearing on January 22, 1986. The DRBC indicated it would act on the application at its next meeting on February 26, 1986.

S ince re l'y ,

Troy B. Conner, Jr.

Counsel for Philadelphia Electric Company TBC/dlf Enclosure cc: Service List 8603040515 860124 -

PDR ADOCK 05000352 .

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o PHILADELPHIA ELECTRIC COMPANY 2301 MARKET STREET P.O. 50X 8699 PHILADELPHIA. PA.19101 v l2:s e4 4soo

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s sr MUCLEAR ,0WER December 16, 1985 Ms. Susan Weisman, Secretary Delaware River Basin Commission P. O. Box 7360

Dear Ms. Weisman:

Transmitted herewith for filing with the Commission is Philadelphia Electric Company's Application under Section 3.8 of the Compact for approval of the temporary substitution, during 1986, of in-stream monitoring of dissolved oxygen levels in place of the 59'F temperature constraint on withdravais for Limerick Generating' Station Unit No. 1 incorporated in Docket Decision 69-210-CP (Final) November 5 l 1975, and of the transfer of the existing consumptive use allocations I

of Titus Generating Station Units 1, 2, and 3 and and Crosby Generating l Station Unit 2 to Limerick Unit 1 when docket limitations in effect l vould otherwise preclude the consumptive use of the Schuylkill River

! water for Limerick.

! A similar substitution of dissolved oxygen monitoring was granted j by the DRBC in Docket No. D-69-210 CP (Final) (Revised) (May 29, 1985) j and a transfer of the consumptive use allocations was granted in Dock.c No. D-69-210 (Final) (Revision No. 2) (August 9, 1985). The said substitution and transfer were for the year 1985 only.

This filing consists of six copies of the following documents:

a) completed DRBC application form, including Attachments 1 and 2 and Exhibits 1 through 8 thereto; b) completed DRBC Environmental Fora; and c) completed Applicant's Statement - Project Review Fee Form.

Enclosed is Philadelphia Electric Company's check in the amount of $100 to cover the Project Review Fee.

The affidavit of Vincent S. Boyer, Senior Vice President, Nuclear Power, Philadelphia Electric Company, which is part of Attachment 2 of the application states that issuance of a full power license by the Nuclear Regulatory Commission for Limerick Unit No. 1 occurred on August 8,1985, power ascension and testing began immediately, and

b rs comnercial operation is expected by mid-February 1986. It is further stated that the cost of not operating the mit for lack of water is estimated to be $800,000 per day in replacement fuel costs. -

Accordingly, the Ccurpany requests Imnediate action on its Appilcation, pursuant to Section 2-3.9(d) of the Comnission's Rules of Practice and Procedure to protect the pubtle interest and to avoid substantialandirreparableinjurytothepplicandtotheCapany.

Ccmrunications regarding this Appilcation should be directed to the undersigned.

We are currently holding discussions with Metropolitan Edisjon

. Ccrnpany, the owner and operator of the Titus Generating Station, regarding this Application to the extent it relates to the continuation of our present agreement concerning the operation of the Titus facility.

Very truly yours, A

Vincent S. Boyer WFD/ bis /12168501 Enclosures 6

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o 2,

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, DELAWARE RIVER BASIN COMMISSION Type of Application: (Check one or more - see reverse side) .

(a) Addition to the Comprehen'sive Plan. . . . . . . . . . . . . . . . . . . . . . . .( )

(b) Change in a Comprehensive Plan Project. . . . . . '. . . . . . . . . . . . . .( 4 , -

(c) Approval under Section 3.8 of the Compact. . . . . . . . .. . . . . . .. (x)

(d) Inclusion in "A-List" of the Water Resources Program. . . ... ... ( )

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Pursuant to the Delowore River Bosin Compact and the Rules of Practice and Procedure of the For Use of Commission Delowere River Bosin Commission, cpplication Docket No.

is hereby made for review of the project des- Date Received cribed below: Action by Commission Application From:

(A) -

a Nome' Philadelphia Electric Company - '

Mailing Address 2301 Market Street, Philadelphia, PA 19101 Telephone (215) 841-4000 Nome of Counsel Edward G. Bauer, Jr.

and Eugene J. Bradley Nome of Engineer V. S. Boyer -

(B) Type of Project: (Check) .

! (I) Impoundment. . . . . . . . . . . . . . . . ( ) (4) Streem Encroachment.......( )

i (2) Withdrawal of Water. . . . . . . . .( 4 (5) We ll . . . . . . . . . . . . . . . . . . . . . ( )

(3) . Disposal of Westes . . . . . . . . . .( .)

. (6) O th er . . . . . . . . . . . . . . . . . . . . ( )

(C) Description of Project:

• For 198@,' the withdrawal of water from the Schuylkill River for consumptive use at Limerick Generating Station Unit No. I by temporary substitution of in-stream mor.itoring of dissolved oxygen levels in place of the 59'F temperature constraint, similar to the substitution granted in Docket No. D-69-210 CP (Final) (Revised) (May 29, 1985); and by transfer of the existing consumptive use allocations of Titus Generating Station Units 1, 2 *and 3 and Cromby Generating Station Unit 2 to Limerick Unit I when existing docket limitations would otherwise preclude the consumptive use of the Schuylkill River water for Limerick, said transfer originally granted in Docket No.- D-69-210 CP (Final) (Revision No. 2) (August 9, 1985).

Signcture of Authorized Person gjg l Norne v. S. Bover V Titic Senior Vice President, Dolc Nuclear Power DEC 161985

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Del:wcre Riv:r Bash Commission N9 4518 APPLICANT'S STATEMENT - PROJECT REVIEW FEE (See Reverso Side For AdditionalInformation)

1. Name and Address of Applicant Philadelphia _ Ele._c t ric_ Company 2301 Market St., P'aEadelphia,PA19101 ,

2. Name of Projec, ____ Limerick Generating _ Stat _i.on Interim Consump_tive_yater . Supply Docket #

3. Type of Project Check Applicable item (s) tg (a) impoundments (b) diversions of water into or out of the Delaware River Basin (c) industrial water use and waste treatment facilities

_.1.(d) electr c generating and transmission facilities (e) petroleum product pipelines

.. (f) stream encroochments; and (g) withdrawal of ground water

4. Project Cost Factors (Complete all lines using Zero where applicabl2)

Item Estimated Cost

a. Design $ .0

b. Supervision of Construction 3 0

c. Legal Se vices $ 0

d. Contract Administration $_0

e. Land $ 0

f. Materials $ 0

g. Construction and Fabrication $ 0 TOTAL ESTIMATED PROJECT COST $

Footnotes / Remarks non-structural - D. O. monitors are already constructed _

in accordance with authorization and approval thereof.

5. Filing Fee Schedule (Check applicable item (s))

(The filing fee is the greater of (a) or (b)) Computations (a) minimum fee: $100. for any projects or (a) $ 100.

(b) citernative fee: (b)

(1) 1/10 of 1% of estimated project cost up to $1,000,000. (1)$

(2) 1/50 of 1% of remaining cost above $1,000,000, but not (2) $

to exceed a maximum fee of $50,000 as to any one project, exclusive of added environmental fees.

Total S. 100.00 .

6. Filing Fee Required with Application

• Please enclose check in this amount with application. Check should be mode payable to Delaware River Basin Commission.

NOTE: Should this project require on EnvironmentalImpact Statement or an Environmental Assessment, you will be notified at a later date and an Applicant's Statement Environmental Review Fee will be forwarded for completion and payment o applicable fee.

.s. 47_ ,

DEC 161985 Date Senior Vice Pres _id_ent,. Nuclear Powe_r Title ACKNOWLEDGMENT BY DRBC OF FEE PAYMENT Received Check No. .. . . . . . . .. , dated -. , Bank No. ...

In amount of CC PIES: (1) Adminfetrative Divialan Copy -- white $ignature til AFFLICANT - Retain Thee Copr - pink est App 4Leont - DRRC Reeelpted Copy - yeseew (4) Prekeet Review repy - blue --

l D210w;ra Riv r Scsin Ccmnlesion j ENVIRCNENTAL FCRM  ;

Date DEC 16 GBS Appilcant Philadelphia Electric Co. -

Title of Project interim Consurettve Water Supply-Location Limerick Generating Stat lari i OMC Docket No.

1. List any significant environmentan linoacts, beneficial and aWerso, caused by the proposed action.

The benef tclat istpact of 'he requested tegorary substitut!on of Instrean monitoring of dissolved oxygen levals in p13ce of the 59 F terrearature constraint and the re@ested trare,fer of water atlocations for consuTotive purposes will be to perTnu scheduled operation of Llmerick Un(2.1, already evaluated by the DRBC. Sae, CRBC FEA for NeshanIny Water Supply System (August 1980); ORBC, Level 5 Study; and AEC#RC FES for Limerick (Noverrt>er 1973 and W rch 1984) and DER EA (August 1982). There wlil be no adverse Impacts frcrn r.he termorary suspension ol' the 59"F turrversture constraint.

(See paragraph 2 bolc,,0. 1Ee of Titus Station's water will enhance the 23 mile reach between Titus and Limerfsx due to the delay Jn consutot%e use of the water. Use of Cm.by Station's water allocation will lave mintrmsn impact on the 9 mile reach between Lirrgrick and Crcunby. (See At(givnent 1.) -

2. Phat mitigating measures will be used to reice or alleviate iba adverse a envirorynental inpacts?

There will be no adverso impacts frcrn the terrporary suspension 2f the 590F terrperature constraint. Degradation Of water quality of the 7chuylkDT River below Limerick Gererating Sthlon will be precluded by in-strearn rronitoring of dissolved oxygen levels. Tiw purpmed use of cperat lonal f stations' water wt11 not change t.hc latended purpose of the present water allocations. The Irtpact on the $c.hoylkill RIv=/ will be minimal. Thus, no mitigating measures need be undertaken. #

3. Sunnarize the alternativeo considered.

The alternatives considered were (1) ;eo acticrb, (2) release of water from the Ontelaunee Reservoir, (3) release of water fran Creen Lane Reservoir, (4) release of water frem Blue Marsh Reservoir or cther DRBC water seply

storage,

4. List any known objectors to the propcsed action.

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ATTACPNENT 1 ,

Appilcation cf Philadelohta Electric Cumany For Termorary Susper.sion of SS F Tenperat.ure Constraint and For /cthor!zation of Consumt tve Water Usa During Coordinated Operstion of Cer!.aln Schuylkill River '

Generating Fac)I(ties i

Seneficial Irmisets to the envircrvnent. The aval3 ability of coollng water for Limerick during 1986 will enable Limerick tinit 1 to be placed in carmercial operation ind to operate at full capacity to rrect electric paper generation needs, for southeastern Pennsylvania .

In the vrost econcmic drerner.

DRBC has previously determlncd that t.he sup;)1y of cooling water for Limerick provides a bensfit to the envircrutant. As DRBC stated in its rnost recent environmental review of the supply of supplanwntal cooling water for 1.!merick, "docunents prepared after DR8C's Final EIS ,

on the Point PJeasant Diversion Plan, Issued in 1973, support the co3clusion 7. hat t.he proposed projebt would be e feasible and beneficial use of water resources." See DRSC Fir.at Envirormental Assessment. for the Neshaminy Water Supply System, Part III, p. 2-53 (August 1980). DRSC reached the same conclusion in grantirg final Section 3.8 approval to the Point Pleasant project in Docket No. 0-79-52 CP at p.5 (February 18, 1981). Accordingly,, DABC has recognized that the use of Basin ,

water resources to provide cooling water for Limerick cmstitutes a i beneficial use.

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- 2-As to the specific need for the electrical power to be generated

-by the Limerick, DRBC has relled upon the findings of the Nuclear Regulatory Cornnission (previously the Atcmic Energy Conmission) In its own envirornental statements for Limerick. See Docket No. D-69-210 CP (Final) at pp.1, 6-8 (Novenber 5,1975). In f

1ssuf r.g construction permits for Limerick, the AEC detenn!ned that there is a need for the electrical power to be generated by Limerick.

- See AEC Final Environmental Statement Related to the Proposed Llrrarick Generating Station, Units 1 and 2, Dccket Nos. 50-352 and 50-3535, ch.

9 (Noventer 1973). At the operating Ilcense stage, the NRC similarly found a substantial benefit to the envircrimer.t to be derived frorn the operation of the Limerick Stattoo In the annual production of approximacely 10 billion kWh of base load electrical energy. _See tetC Final Environmental Statement Related to the Operation of Linerick Generating Station, Units 1 and 2, Docket Nes. 50-352 and 50-353, SectJon 6.'J.2 (March 1984).

Further, in an order entered August 27, 1982, the Pennsylvania PUC expressly stated that "(t)he public Interest requires . . .

(t)1mely completion of Limerick Unit 1" and further stated "we enccurage the Comany to carplots this unit as rapidly as possible_

consistent with the pubitc safety." Pennsylvania PUC, Opinion and Order, Docket No. T.80100341 (A.. gust 27, 1982) (enchasis added) (pp.

23 '25). Accordingly, there exists a substantial benefit to the erwironnent and the public in the maximtrn availability of LIrrarick UnlL 'l for pwer proc'ur lon, l

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tb aWerse Irmact by trarporary suspension of 59CF termerature constraint. DRBC Dc:ttt No. D-69-210 CP (March 29,1973) precludes Schuylkill River 41thdrawals for consurptive use by Limerick whenever elver water termeratures below Limerick exceed 590F, except during AprII, May, and Jfx3e when floe measured at Fottste eIceed 1,791 cfs.

DRBC'r drck'on to Ilmit S(.huylkill River withdrawals when termeratures are hbos'a 59CF is intended to reduce stresses on strean water nuality caused by consumstvc Icsses at Limerick when water cuality is .significantly affected by organic weste assimlistion, When termeratures In the river exceed 5907, the biological oxygen demand accelerat.es and the dissolved ,

oxygen (D.O.) necessary for waste ensimilation bectrnes more critical.

PECO proposes to tronitor the Schuylkill River for DO at several locations below Lfrratick and to substitute a suitable DO valts os the limit on withdravals from the natu al river ficw for the present 59V temperature Ilmit. This utstitution of 00 for termerature is prooosed for calendar year 19fl5. PEco will regularly transentt the 00 Infornwtton to the offices of the DRBC so that (t* can be evaluated by them. Wif.h this monitoring program in effect, PECo will be permitted to continue operations at Limerick regardless of river water termerature.

Substitut!on of direct measurement of 00 raadings was previously evaluated and approved for 1985 by the CRBC, See DRBC Docket No.

0-69-216 CP (Final *) (Revised) (May 29, 1985). From 4 ne 15, 1535 through the end of the year, 0.0. was ronitored every four hcurs at six different locations between Limerict (R.M. 48.0) and the Fa f nrount Dam (R.H. 8.5)

In philadelphia. The rnbnitoring of data was acccrmllshed manually, in Runnber,1925, af ter all necessary perw!ts had been received,

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installation of six autcrratic DO monitoring facilities was begun. The nonitoring and transmittal of data will be acccrrolished, beginning early in 1986, with the newly Installed automatic equlgenent. When autoratic eauf prent. is out of service due to necesssey maintenance or failure, manual means wl11 be utilized. Re ardless of the means of conttoring, data will be transmitted to the DRBC daily and DPJ$C also will have ready access to all data by phone at any Intervening time.

Depressed 00 levels usually ce:ur !n the cools behind the dans across the Schuylkill River. Pursuant to the terms of Docket ik.

D-69-210 CP (Final) (Revised) (May 29, 1955), a sarpilng station was established within 200 feet of each of the fo1 Wing six darrs: Faintount Dam (R.M. 8.5), Fl at Rock Dam (R.M.15.6), Plynouth Dam (R.M. 20.7), [

Norristown Dam (R. M. 23.9), Black Rock Dam (R. M. 35.6), and Vincent Dam (k.M. 44.7). At each of these stations a single probe has been installed. The probe has been positioned vertically in the water 4

colum beim the mid-point so that it will net be stbject to turface.

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t This mwiltoring program, dien substituted for a single terrcerature measurement, will provide satisfactory water quality protection because i of the relationship between DO and organic waste assimilation and also because thu entire downriver stretch will be monitored.

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DRBC Docket D-69-210 CP (Final) (FevJsed) (May 29, 1985) established -

l water quality standards for DO in the Schuylkill River for the pericd ending Cf. cent >er 31, 1985. The Docket set a 5.1 ng/l m!ntra.rn dally average value and a 4.2 mg/l minfrn.m Instan',aneous value at any one or ,

more of the tronitoring locatic,rts for the period beginning June 15 to

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the end of the year. These values represent a margin 'of safety abws the Chapter 93 Water quality standards, as incorporated in the Pennsylvanta Department of Envirorvnental Resources Rules and Regulations. FECo proposes that these two values again be established as the critfcal values ilmiting withdrm<als from natural river flow.

In addition to the above mentioned trigger values, the DRBC Dociet established a 7.0 mg/l minimtsn Instantar>eous trigger value during the period March I to duna 15. This restriction was recGm-reed by the PA Fish Comission to protect squatic ilfe during their spawning period. The Ccunission cited a 6 f.o 8 mg/1 D.C. level as being necessary to insure successful spawning and incubation for mst game species, it also said that flows are usually high er.cugh during this time period .so that this D.C. level can be molntained. We feel this va'lue Is unnecessarily high and propose it be Icwored to 5.1 ng/1 mlnitrim daily average and 4.2 mg/l minin n Instantaneous values. This change will estabitsh a uniform set of criterla for the entire year.

Data collected by Radiation Mhnagement Corporatf ort (RMC) and the U.S.G.S. shcws that the D.O. Is not always abwe 7 port. In late t.ortl 1985 D.O. levels were truch below this value, and in several previous years the D.O. often was below 7 ppm in May and June.

The present D.O. measurements are made about 200 ft. upstream frcm

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the dams which fenn the six rainstem inpoundrents below LimerJck.

Readings at these locations provide a conservatively low Indicatico of D.C. conditions ir the free-flowing reaches of the Schtr/1 kill River.

The DRBC stated that at these locations the minirnum level of D.O.

Should occur. See Cocket D-69-210 CP (Final) (Revised) (May 29, 1985),

Physical Features, p.2.

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At corditions of low flew and warm water termerature the D.O.

concentration decreases st.bstantially as the water passes slowly through the incounchents. Oxygen demands are greater in the pools and reaeration is truch reduced.

Actual D.O. readings taken at the Vincent Pool in April 1985 show that there can be a difference of greater then 1.0 to 1.5 mg/l between the head cf the Pool and the near-dan location where the monitoring takes place. Prior D.O. surveys at Vincent Pool also support this finding.

The mainstem of the Schuylkill River is Inhabitated by a warnwater fish corrinmity characterized by carp, goldfish, white sucker, brown bullhead (channet catf tsh in lower reaches), three species of sunfish, several species of minrows, and smallmouth bass. Largemouth bass are less cercon than smallmouth bass. Muskellunge are present but not at all numerous; stocking and escapes from large reservoirs maintain the limited fishery, h*alleye are virtually absent.

The smallmouth bass is probably ti;e most Inportant game fish in the Schuylkill RIwer as well as In large tributary streans such as the Perklanen Creek. Although highly sought after by anglers, it is not a dcminant cormonent of the fl.sh comunity in terms of nuers or blcmass.

l The smallmouth is suggested as a representative species to be >

i protected by the 0.0, limitation on water use at L 1rmrick since this spectos Is present, irrportant to an01ers, and spawns in the Schuylkill 7

River.

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l Irrportant habitat variables which Influence reproductive success included: tenverature, because ter:perature fluctuations can Olsrupt spawning; fluctuations in water level, stranding or scouring can occur; substrate, bass spawn over a specific type of botte trviterf al; cover, bass usually nest near scme form of covers and dissolved 4

oxygen, critical for early ernbryo development.

Sarrpling conducted by RMC Indicates that sms11rnouth bass preferentially spam in the unitrpounded reaches of the Schuylkfli River and its trlbutaries, although the very upper or head end of the Irroom&wnts may be used also. Overall the Irtpoundments do not appear to contain the substrate trest oreferred by smalltrouth for spawning. Most preferred is a botta material of gravel, broken rock, and boulder with adequate Interstitial spaces secondarfly they will select a pebble rasterial, Silt-sand and bedrock substrates are much less desirable.

The predminate substrate in trost of the pools is unconsolidated gravel-rubble overf aln by or rnixed with slit and sand-coal fines. The persistent slit problem in the Schtrylkill River dates back to the '

1800's when coal silt or culm was discharged to the Schuylkill River from rnany active mining sources in the upper Basin.

Smallrnouth bass spams in May and Jme at water terreeratures of 57-81 F In the Schuylkill River. This species builds a nest, preferably over clean gravel, and some 3000 to 7000 eggs are attached to clean stone within the nest.

Habitat sultability Information developed by the U. S. F1sh and Wildlife Service Indicates that D.O. levels of 6 mg/l and higher are asstmed to be cottrnal for errbryo and fry survival. One research project found in our recent literature review showed that egg survlval

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to 14 days at 68 F was 50% at 8.7 mg/1, at 63 F survival was 39-42% at 4.4 mg/l, and at 77 F 29-31% at 4.4 mg/1. (Hatching usually occurs within 7 days at termeratures of 59 F and higher.) Also to be noted, as mentioned above, many factors besides D.O. are involved with egg and fry loss. Since the smallrrouth spawns in ar%as that can be expected to i have a D.O. level higher than that Indicated by the D.O. monitors, the Irmosition of a 7.0 mg/l 11mitation is overly conservative.

Thus, It can be concluded that the 5.1/4.2 mg/l D.O. limitations i are appropriate to assure that consumtive water use does not degrade water quality to the point where reproduction of game fishes is endangered.

No higher Ilmit is necessary to protect the reproduction of game fish in the Schuylkill River below Limerick.

Lowering of the D.O. Ilmitation fran 7.0 mg/l during the period March 1 to June 15, to 5.1 mg/l average and 4.2 mg/l Instantaneous t

values would substantially increase the river availability for use at j Limerick during this period. With the 7.0 mg/l limitation in effect i

the . Iver typically becomes unavaliable In mid-May and stays unavailable until the Ilmit is lowered in mid-Jme. In sane years. the river would become unavailable as early as the beginning of May. With the lower D.O. Ilmitations In place the river would be available virtually aII of May and approximately 90%-100% of the first half of dme.

In addition to the present 590F termerature constraint on withdrawals at Limerick, there is a minitrun flow constraint of 530 cfs for one unit. This constraint operates Independently of the 59 F termerature I

( constraint. Frequently, the flew constraint would preclude withdrawals i

from the Schuylkill, regardless of the termerature constraint. For

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exanple, during the drought of 1965, the flow constral'nt of 530 cfs would have prohibited Schuylkill River withdrawals 167 days, while the tenverature constraint would have prohibited withdrawals for only an additional 29 days. The historic record for the Schuylkl11 River over the past 55 years shows that, on average, withdrawals for one unit at Limerick would have been prohibited by flow 54 days per year. Tenperature restricts withdrawals apore::!metely 120 days each year. There is

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overlap of restrain'.s each year but on average water may not be withdrawn due to flow and temperature approximately 150 days per year.

See DER "59 F Restriction on the Schuylkill River Water Withdrawal, Limerick Nuclear Power Plart' at pp.4, 7 (Septent>er 1983). The tenporary suspension of the 59 F tenverature constraint and substitution of D.O.

monitoring would have permitted SchuylkIII River withdrawals for an additional 58 days dur ng the period June 15, 1985 to Novent>er 30, 1985, if tiu plant had been available for operation during the entire period. The full power operating Ilcense for Limerick was granted August 8, 1985. From August 9,1985 to Novent>er 30, 1985, there were 31 days of river availability gained due to the substitution of D.O.

t nonitoring for the tenverature criteria. The 530 cfs trigger flow criteria was considered to apply throughout this period.

As the plant proceeded with it startup-testing program and ascended l

to higher power lutels, there were 15 days that operation was restricted beceu c of Insufficient makeup water. During those 15 days the restriction resulted from !cw D.O. levels, ficw below 530 cfs for the period August 9 to October 2 or flow below 415 cfs for the period October 3 to Novent>or 30. During nuch of the early testing period when flow and D.O. levels were low the transfer of allocations from Titus and Cront)y allowed the plant to operate unrestricted.

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No adverse Irmact by authorization of consumtive' water use during coordinated operation of certain Schuylkill River generatino feellities. Under DRBC Docket No. D-69-210 CP (Final) (Novent>er 5, 1975), Philadelphia Electric Ccrmany ("PEco") is largely prohibited from taking water from the'Schuylkill River Ifor consumtive use at Limerick Generating Station Unit I during the period June to October. While the requested substitution of direct monitoring of dissolved oxygen (DO) In place of temperature will Increase the days of water availability, water available for consumcive use will be insufficient to operate Limerick during all of 1986. PEco therefore proposes to obtain a partial supply of cooling water for the unit during 1986 by coordinating the operation of Limerick Unit I with certain other electric generating mits on the Schuylkill, (Crcurt>y Unit 2, owned and operated by PEco, ar,d Titus Units 1, 2 and 3 owned and operated by Metropolitan Edison Ccrmany) In such a manner as not to exceed consumtive use withdrawals new authorized for the Titus and Cront>y Units, when the flow and/or'the proposed DO constraints prevent the withdrawal of water. i This chrdinated use of consumttve allocations J

was previously evaluated and approved by the DRBC for 1985. See Docket No. D-69-210 CP Final (Revision No. 2) (August 9, 1985).

/ w l Titus Units 1, 2, and 3 are three coal fired steam electric I

l generating units having a total electric generating capacity of 234 l MWe. Titus is located on the west bank of the Schuylkill River two miles downstream from Reading,, PA and approximately twenty-three miles upstream fran Limerick. In July 1976, the DRBC granted a certificate of entitlement to Titus to use, withdraw or divert surface water of the Basin pursuant to Section 5-1.3 of corrmission Resolution No. 74-6 in l

l l

1 i

. - 11 _

the amounts of 54.834 million gallons per month for consumttve use and 5212.582 mg/ month for non-consumstve use. With the addition of a cooling tower to Titus in 1979, DRBC lssued Docket Decision No. D-74-32, revised October 1980, which stated that the addition of the cooling tower would result in a 3.5 mgd maxinun consumttve use. In relation to Limerick operations, this 3.5 mgd would enable operation of Limerick Unit 1 up to approximately 15% of full power.

Crmby Unit 2 is an oil fired generating unit with a capacity of 201 MWe, located on the west bank of the Schuylkill River approximately nine miles downstream frcm Limerick. In July 1976, the DRBC granted a certificate of entitlement to Crcrrby for 88.410 mg/ month for consunptive use and 11,074.470 mg/ month for non-consumtive use. Using the capacity ratio of Crmby Unit I to Crenty Unit 2 (150 MWe to 201 MWe respectively),

Crcnty Unit 2 has a maxinun consumtive usage of 50.628 mg/ month (1.7 mgd).

Together, Crenty Unit 2 and Titus Units 1, 2, and 3 have been authorized to use Schuylkill water' for consumtive uses equivalent to a maxinun withdrawal of 5.2 mgd. This daily amount of water, when used during 1986 for operation of Limerick Unit 1, would enable the unit to generate power at levels up to approximately 25% of full power and would enable the unit to operate at a base capacity throughout the surmer.

PECo is requesting that the above described 5.2 mgd consumtive

! use allocation for Crcrrby Unit 2 and Titus Units be transferred for use by L'merick Unit 1, to be used by Limerick Unit 1 as warranted. Thus, if Limerick is available for operation but its operation would otherwise l

l be prohibited because of existing flew or the proposed DO consumtive use restrictions, Limerick would be permitted to operate to the extent

? -, - ,.n . - - ,- = -- -,.- - = - - - - . .. . - - - - --- --

4 that its consumtive use would not exceed the consumtive use allocations of the Crcrrby and/or Titus Units. Whenever the resultant power generation at Limerick is less than the power which would have been supplied from the Titus and/or Cronty units, the difference in power generation will

, e not be produced by units utilizing consumtive water frcyn the Delaware River Basin.

The plan of operatloc would be to continuously schedule the operating program for Limerick Unit 1 three days in advance, updating

~

the program each day. The consumtive water requirements for each day's operation would then be calculated taking into account the expected meteorological conditions. This calculation would recognize the availability of the 3.5 mgd available for consumtive uses frcrn the Titus u,its and the 1.7 mgd frczn Cronty Unit 2.

As Limerick is downstrearn of Titus, the Schuylkill River will be enhanced in the 23-mile reach between the two stations by a maximtsn of 105 mg/ month due to the delay in consumptive use of the water. While Limerick is upstream from Crcrrby, tthe adverse impact of the reach in between the two stations should be minimal, as the distance is only 9 miles and the consunptive use only 1.7 mgd. It is emphasized that the flow in the Schuylkill River below Crorty Station would be unaltered.

The proposed coordinated use of consumtive water among the Schuylkill River Generating Stations will not result in any additional environmental or overall consumtive water effects on the basin.

As Indicated above, a substitution of D.O. monitoring and the transfer of water allocations frcrn Titus and Crcrrby stations were approved by the DRBC for 1985. During the periods in 1985 when Limerick was oper;ted u1 der the above described criteria no adverse affects to the

13 -

Schuylkill River basin were observed. The changes requested for 1986 l are very similar to the changes previously approved for 1985. They wl11 allow the plant to operate at a mininun base load of approximately 25% for the entire year and at fu11 pcwer a greater percentage of time than the existing flow and tenverature constraints would allow.

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4 ATTAClffNT 2

• Application of Philadelphia Electric Ccrrpany For Tenporary Suspension of 59 F Tenperature Constraint and For Authorization of Consutetive Water Use During Coordinated Operation of Certain Schuylkill River Generating Facilities Alternatives Considered PECo has considered various alternatives for a tenporary supply of supplemental cooling water to Limerick for the stmner of 1986 when

- docket decision constraints preclude withdrawals frcrn the Schuylkill and Perkicznen. An alternative is not realistic and need not be considered tmless capable of being promptly Implemented. Thus, an alternative cannot require construction or major modification of existing facilities. The alternatives considered and a brief discussion of each follow:

(1) No action - Due to flew and tenverature constraints inposed 6

by DRBC on withdrawn 1s of water from the Schuylkill River for constrrptive use, the Schuylkill wl11 be largely i

unavailable for such withdrawals during the period June to l October, 1986. Because the permanent supplemental water supply from the Point Pleasant project will be unavailable for this period, Limerick would not be able to operate during l

these months without Interim supplemental cooling water. The cost of not operating Limerick for lack of water during that period is estimated to be $800,000 per day. See Affidavit of

(

Vincent S. Boyer, Senior Vice President, Nuclear Power Decent >er 16, 1985 (attached),

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(2) Ontelaunee Reservoir - This reservoir is loc'ated on Malden Creek, a tributary to the Schuylkill River upstream of the Limerick plant, and is owned by the City of Reading for use at a water supply source. Ontelaunee has 11,640 acre-feet of total storage. The City of Reading was granted an allocation of 35 million galions per day of water by the DRBC on August 27, 1969 in Docket No. D-69-139 CP. The water supply system is pres,ently reported to use an average of 20 mgd with a maximt.rn usage of about 25 mgd. The City of Reading and the municipalities served by the water system are served by ccxrprehensive systems of sewerage collection which dischargo to ccrnplete treatment facilities and thence into tributary streams and the Schuylkill River.

Inquiries have been made to the City of Reading and a presentation was made to the City Council as to the city's interest In selling unused water to PEco with approval of such usage by the DRBC. 'To date, the City has not Indicated an interest in making any water available to PECo for 1986, or any other period of time.

(3) Green Lane Reservoir - This reservoir is located on the Perkicrnen Creek. It is owned by the Philadelphia Suburban Water Conpany ("PSW Co.") and is used in contination with other reservoirs and wells for water supply. Total storage is 13,430 acre-feet. Green Lane is not large enough to meet the ccrrbined needs of PSW Co. and Limerick. (Letter to Nicholas DeBenedictis, DER Secretary frcrn Robert A. Luksa, Executive Vice President, Philaelphia Suburban Water Conpany, Jme 4,1984).

- - - - - - - - m . w.. _ _---= _ . m .- . -. -..

(4) Blue Marsh Reservoir - This reservoir is located on the Tulpehocken Creek, a tributary to the Schuylkill River upstream of the Limerick plant. On March 15, 1985, PECo flied with the DRBC an application under section 3.8 of the Ccrmact for releases fran Blue Marsh or other DRBC water supply storage during 1985 for use at Lirnerick Generating Station Unit No. 1. This request was rejected by the DRBC on May 29, 1985 in Docket No. D-69-210 CP (Final) (Revised) due to drought conditions in the basin.

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CObtiONWEALTH OF PEM45YLVANIA  :

ss.

COUNTY OF PHIi>OELPHIA  :

I VINCENT S. BOYER, being first duly sworn, states as follows:

1. My name is Vincent S. Boyer, I am Senior Vice President, Nuclear Power of Philadelphia Electric Conpany ("the Conpany"),

cwwr and operator of the Limerick Generating Station.

2. On August 8,1985, the NRC issued a full power operating IIcense for Limerick Generating Station Unit 1.

3. The power ascension and testing program at Limerick was begun inTnediately, and conmercial operation is expected to be attained by mid-February 1986.

f+ . The partially constructed Point Pleasant diversion will not be ccr.ipleted in time to supply Unit l's supplemental cooling water needs for 1986.

5. Consequently, an interim supply of supplemental cooling water is required during those periods of 1986 when the flow and temperature constraints would prevent plant operation.

l 6. After connercial operation, any shutdown due to inadequate cooling water will result in an increased cost to the customer of $800,000 per day in replacement fuel costs. The transfer of Cront>y-Titus water allocations to Limerick will allow Unit 1 to t

. _ _. __ _ . _ ~ _.- - - - - - - - - - - - - -

. 4 operate at 25% of full power and will reduce the cost to the customer to $650,000 per day. Approval of the proposed dissolved oxygen standards in place of the 59 F terrperature Ilmit would, on an average year, penrif t full power operation of Unit 1 for an additional 90 to 100 days per year.

'BC.2% n

, Vincent S. Boyer Subscribed and sworn to before me this 16th day of Decenter, 1985 PATRfCIA D. SCHOt.E Notary Pubte, Pbl.yfetesa. Pen:adeloNa Co.

My Commasaos Empires February 10,1986 '

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• Exhibit 1 Appilcation of Philadelphla Electric Ccrnpany For Tenporary Suspens7m of 59oF Temerature Constraint and For Authorizatio,, of Consumtive Water Use During Coordinated Operation of Certain Schuylkill River Generating Facilities -

I Abstract of Proceedings Authorizing Project DRBC Docket No. D-69-210 CP (Final) (Novenber 5,1975) approved the Limerick Generating Station Project pursuant to Section 3.8 of the Compact. Incorporated In this Docket were Schuylkill River ficw and temperature restrictions which would largely prohibit consunptive water withdrawals during the period June to October, 1986. The 59 F temperature constraint is spr.cifically included in DRBC Docket No. D-69-210 CP at p.5 (March 29, 1973). While this termerature constraint'has beea reviewed by DRBC and DER and deemed appropriate to provide a margin of safety in maintaining desired dissolved oxygen (DO) levels, those conclusions were based upon long-term consunptive use of Schuylkill River water without alternative measures to assure that DO objectives are met. The DO monitoring program, when substituted for a single termerature measurement, is consistent with the DRBC objective to assure adequate DO levels.

l In July 1976, both Titus and Crcrrby Generating Stations were granted certificates of entitlement to use, withdrav or divert surface water of the Basin pursuant to Section 5-1.3 of Cormission Resolution No. 74-6. DRBC Docket No. D-74-32, revised October 1980, states that j the addition of the cooling tower to Titus resulted in increased consunptive use.

. ~~~ *~ -~

-~~ ~ _ _ - _ ~ ~ _ 3--

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6

Exhibit 2 Applicstion of Philadalphla Electric Cormany For Tomorary Suspension of 59 F Termerature Constraint and For Authorization of Consumtive Water Use During Coordinated Operation of Certain Schuylkill River Generating Facilities Standard Regarding Termorary Suspension of 59 F Termerature Constraint on Schuylkill Withdrawals The DRBC's objective in imposing the 59 F termerature constraint on Schuylkill withdrawals is to reduce stresses on stream water i

quality caused by consumtive losses at Limerick when water quality is significantly affected by organic waste assimilation. So long as the stream capacity to assimilate organic waste is not impaired by Limerick withdrawals above 59 F, as assured by PECo's instream monitoring, DRBC's objective will be achieved (see Attachnent O.

l There is no Indication in the history of DRBC's consideration of this i

criterion that it has any significance apart from Indirectly maintaining control over desired DO levela in the lower reaches of the Schuylkill and the Delaware estuary, t

Standard Regarding Authorization of Consunptive Water Use During Coordinated i

Operation of Certain Schuylkill River Generating Facilities The primary purpese of the DRBC In establishing limits for consunptive use of water Is to minimize the adverse envirorrnental I effects of withdrawals for consumtive use during periods of low natural stream flow and low dissolved oxygen levels. The proposal set forth in this Application is consistent with the purpose in that the level of consumtive use presently authorized for Titus and Crenty will not be Increased with the operation of Lirnerick Unit 1 as proposed herein.

- . - ... -..  : ...a --. . - - - . . - - . - - . . .. - --

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. Exhibit 3

• Acclication of Philadelphia Electric Conpany For Tenporary Suspension of 59 F Tenperature Constraint and For Authorization of Consuretive Water Use During Coordinated Operation of Certain Schuylkill River Generating Facilities Section of the United States Geological Survey Topographic Map Showing the Territory and Watershed Affected v

The maps attached detalling the locations of the six dissolved oxygen tronitors at the Vincent, Black Rock, Norristown, Plymouth, Flat 4 Rock, and Fairmount Dams were prepared fran the United States Geological Survey Phoenixville, Norristown, Germantown and Philadelphia Quandrangles.

The maps attached detailing the location of Titus Station and Crarby Station were prepared frcrn the United States Geological Survey Reading and Phoenixville Quadrangles, respectively, t

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. Exhibit 4 i

Appilcation.of Philadelphia Electric Ccreany For Temporary Suspension of 59*F Tenwerature constraint end For Authorization of Consumtive Water tJse During Coordinated Opera!.lon of Certain Schuylkl31 River Generating Facilities i

Description of Specific Effects of Non--Structural _ Projects

, 1 The specif!c effects of the non-structural projects are discussed in Stetton 1 of Env3ronmental Form and Attactuent I hereto.

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Exhibit 5 4

Appiteation of PhiladeiraSls Electric Ca pany for Tartporary suspens!co of 59 F Terroerature Constraint and For Authorization of Consumtive Water Use During Coordinated Operation of Certain Schuylkill River Generating Facilltles f

Report of the AppiJeant s Engineer Shcwing the i

Prcoosed Plan of Operatfor of the Project

)

Corrnercial operation of Litmerick Unl.t No.1 is espected to be attained by February 1986. Based on the availabIllty of constrmstve wa,ter the following plan of operation is envJsloned. 14han the river is ,

available based on the flew and the preposed D.O. constraints PEco will operate the plant at rated capacity or es the systec:1. cad Dispatcher ,

requires. D.O. will be tronitored at the six dart sites described In attachment 1. SanTMs will be taken automatica11y every two hours. .

Any two consecutive two hour readings at or below the 4.2 mg/l Instant.aneous mintrntan or a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> running average value at cr belcw 5.1 mr! /1 averag=, <

will require the plant to revise o%peretten so as to stop ccostrmtive water withdem<als. Durine periods when the river is unavailable because of ficw and D.O. constrative use restrictions, Lirnerick would be operated tu the extent that its constr.ptive uses would be comensated for by equal reductions in the consumt!ve uses of the Crmoy and/or ,

Titus trilts. Whenever the resultant pour generation at Linurick 35 Isss than the power which would have been supp11ed fran the Titus and/or Crcrrty tr Its, the differerre In ocwer gereration will r:ot be produced by units utI11 zing constamtive water f ran the De11 ware RJver ,

Bas 1n.

N es mop -

Q .

2-d The operating program for Lirrerick thlt i veuld be continuevsf y scheduled for three days in advance, updating the program each day.

The consuver tve water requirements for each day's operation vculd then .

be calcular.ed taklog into acceaunt the expected meteorological conditions.

This calculation would recognize the availability of the 3.5 mgd ,

avette51e for consurptive uses frcm the Titut units and tihe 1.7 mgd '

1-from Crcrby Unit 2. The ficw and dissolved oxygen constraints described in Attachment I would he 13apollca61e to ,the periods when Titus and -

Crcriby units are shutdcwn.

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Exhibit 6

. top 1! cation of Philadelphf a Electric Company For Tenperary suspension of 59 F 7enperature Constrotnt and for Authorization of Consuretive Water Use During

. Cocrdinated Operatton of Certain Schuylkill River Generating Facl11tles Heo of Any Lands te be Accof red or Occupied This is a non-structural proccial, There are no lands to be acculred.

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Exhibit 7 Appilcation of Philmfelphia Electric Coripany for Terporary Suspension of MoF Terrperature Constraint and For Authorization of Consmptive Water Use Ouring Coordinated Operation of C.ortain Sctuylk!)i River i Generating Facilities

?

Est!rnate of Cost of Corpleting the Proposed Project This is a non-structural proposal which involves no expenditures for its co eletion. D.O. rnonitoring eculpment is already in place.

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f Exhibit 8 Acolication of Philadelphia Electric Company for Termorary Suspension of 59CF Termerature constraint and For Authorization of Consumtive Water Use During

, Coordinated Operation of Certain Schuylkill River Generating Faci 11tles Deseriotion of Constructfon Precadores This is a non-structural proposal th1ch involves no construction activity.

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