ML20095E876

Forwards Responses to Action Items 1,2,3,4,6 & 7,per Environ Site Visit Meeting Summary Ltr

ML20095E876
Person / Time
Site:	Beaver Valley
Issue date:	08/21/1984
From:	Woolever E DUQUESNE LIGHT CO.
To:	Knighton G Office of Nuclear Reactor Regulation
References
2NRC-4-129, NUDOCS 8408270071
Download: ML20095E876 (17)

Text

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rib $n P az B di g Suite 210 Pittsburgh, PA 15205 August 2:, 1984 United States Nuclear Regulatory Commission Washington, DC 20555 ATTENTION:

Mr. George W. Knighton, Chief Licensing Branch 3 Office of Nuclear Reactor Regulation

SUBJECT:

Beaver Valley Power Station - Unit No. 2 Do kat No. 50-412 c

Responses to ER Site Visit Action Items Gentlemen:

Please find enclosed res pons es to Action Item Nos.

1,2,3,4,6, and 7 that were requested in the Environmental Site Visit Meeting Summary letter to Duquesne Light Company dated May 8, 1984.

All res pons es to Action Items referenced in the above letter have now been submitted for staff review.

DUQUESNE LIGHT COMPANY By EVJ. Woolever Vice President TJZ/wjs Attachment cc:

Ms. M. Ley, Project Manager (w/a)

Mr. E. A. Licitra, Project Manager (w/a)

Mr. G. Walton, NRC Resident Inspector (w/a)

SUBSCRIBED AND SWpN TO BEFORE ME TJIS c)dsd DAY OF

///uacd g 1984.

N YL xo t

Notary Public 40821 AN!TA ELA!NE RE!TER. NOTAP.Y PUGUC B4082700 1O 000412 ROBINSON TOWNSHIP. ALLEGHENY COUNTY PDR ADOC PDR MY COMMISSt0N EXPlRES OCTOBER 20,1986 P

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Unitqd Statss NuclGer R3gulttory Commission Mr. G2crga W, Knighton, Chief Page 2' COMMONWEALTH OF PENNSYLVANIA )

)

SS:

COUNTY OF ALLEGHENY

)

On this 24-dd. day of

,ed

//[

, before me, a Notary Public in and for said Commodwealth and County, personally appeared

- E. J. Woolever, who being duly sworn, deposed and said that (1) he is Vice President of Duquesne _ Light, (2) he is duly authorized to execute and file the foregoing Submittal on behalf of said Company, and (3) the statements set fo rth in the Submittal are true and correct to the best of his knowledge.

N.O

& L Notary Public ANITA ELAINE REITER, NOTARY PUBLIC ROBINSON TOWNSHIP, ALLEGHENY COUNTY MY COMMIS$10N EXPIRES OCTOBER 20,1986 1

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4 1.

Describe the structure and function of the chemical waste sump.

Response

BVPS-1 and

-2 demineralizer wastes, BVPS-1 auxiliary boiler blowdown, and cold lab _ sink drainage are batch-neutralized in the chemical waste sump prior to dis Jarge to the BVPS-1 cooling tower blowdown.

The demineralizer and the waste sump are located in the water treatment area of the BVPS-1 turbine building. This batch neutralization system consists of a chemical waste sump (a 15,000-gal sump constructed of concrete), two 20,000-gal steel tanks, a mixer located in the chemical waste sump, and acid and caustic feed valves.

The wastes are sent to the steel storage tanks where coneutralization of the wastes results in a pH between 2 and-12.

The contents of the storage tanks are then bled into the chemical waste sump. where the wastes are mixed for further coneutralization and then either acid or caustic is added to adjust the pH to '6-9.

The neutralized wastes are then discharged to the BVPS-1 cooling tower blowdown.

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2.

Justify the flow estimate given for Peggs Run.

What other data on

-flow, water quality, and biota are available for the creek? What other effluents are. discharged to Peggs Run, in addition to that from the BVPS-2 sewage. treatment facility? The sewage effluent could constitute more than one percent of the creek's mean flow.

Where appropriate, define the expected effluent water quality (BOD, DO, TSS, chlorine, etc.) and discuss the expected effects on Peggs Run.

Response

There are no flow, water quality, or biota data available for.Peggs Run.

The flow estimate for Peggs Run is based on published annual average runoff figures for the area and comparison with a nearby gauged small watershed.

The annual average runoff for Peggs Run is estimated to be 18 inches per year (Rouse 1950)..Given a drainage area for Peggs Run of 3.74 mia (rounded to 4.0 mia in ER Section 2.4.3), the average flow is estimated to be 4.9 cfs. The Raccoon Creek watershed was also examined in order to obtain an average flow for Peggs Run.

This watershed has been gauged at Moffatt Mill, Pennsylvania, for 34 years and has an average anaual flow of 190 cfs corresponding to a watershed area of 178 mi2 This equates to an average annual flow of 1.07 cfs l

per mia.

Using this value for Peggs Run gives an average annual flow of 4.0 cfs.

In addition to sewage treatment plant e'ffluent estimated at 22,325 gpd during normal plant operation, there are several other waste streams being _ discharged into Peggs Run.

These include storm water runoff, BVPS-2 cooling tower pumphouse-floor and equipment drains estimated to be a maximum of 72,000 gpd, and HVAC cooling tower blowdown from the Emergency Response Facility estimated to be less than 1000 gpd. During the summer, it is expected that the flow in Peggs Run vill primarily consist of discharges from the cooling tower pumphouse and the sewage treatment plant.

l Due to a lack of data on the aquatic biota of Peggs Run, the specific effects of water approaching the quality of sewage treatment plant effluent on aquatic biota cannot be qualified.

The expected effluent quality from the sewage treatment plant is discussed in Sections 3.7 and 5.4.

Sewage treatment plant effluent is discharged into Peggs Run as it flows through a 15-foot diameter culvert.

The distance between the end of the culvert and Ohio River is less than 1000 feet. Approxi-mately 400 feet of this is a sheet pile and concrete retention struc-ture with a weir at the discharge. The distance between the Ohio River and the weir is approximately 200 feet.

Generally, the low dissolved oxygen associated with sewage effluents can be expected to exclude permanent settlement of fish and benthos from the area downstream of the sewage treatment discharge.

However, the culvert and steep-sloped concrete-and-sheet-pile-lined retention structures which make up a large portion of the stream below the sewage discharge are not pre-r l

ferred habitat for most fish and benth'ic species.

While the water quality changes have potential to impact aquatic biota typical of small tributaries to the Ohio River, most of the lower portion of Peggs Run does not possess the physical habitat typical of such tributaries. The 200-foot backwater between the-weir and the Ohio River, however, does

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possess the physical habitat typical of small tributaries to the Ohio River and is expected to be subjected to periodic low dissolved oxygen conditions due to sewage treatment plant effluent. The duration and intensity of these periodic conditions are related to a combination of Ohio River, Peggs Run, and sewage treatment plant effluent flows.

Reference:

Rouse, Hunter 1950.

Engineering Hydraulics, Proceedings of the Fourth Hydraulic Conference, Iowa Institute of Hydraulic Research, June 12-15, 1949. John Wiley and Sons, New York, 1950.

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3.

Provide element-specific source te rms for metals corroded from con-denser tubes. Specify whether this information has been entered into the concentration estimates for discharges; if not, it should be.

If the corroded chromium and nickel 'are assumed to all appear in 10,463 gpm blowdown, the resulting concentrations would each be about 0.01 gpm, or about 20 percent of the ambient criteria for nickel and hexavalent chromium given in Tables 5.1-4, 5.1-5, and 5.3-4.

Response

Type 304 stairless steel consists primarily of iron (66 percent),

chromium (18-20 percent) and nickel (8-11 percent).

The loss of metal from Type 304 stainless steel is not a function of corrosion but of erosion.

The surface of stainless steel is protected by metal oxide consisting of chromium and iron oxides.

The stainless steel metal oxide is formed primarily of Cr20.

Iron in 3

trace amounts is also present, but nickel is not normally found. The chromium is in trivalent form. The oxide layer is periodically removed due to erosion and is replaced with a new oxide layer due to the self-healing nature of this type of stainless steel (ASM 1976).

ER Sec-tion 3.6.4, Corrosion Products, discusses the amount of metal that may be lost from the stainless steel condenser tubes. This section states that the corrosion rate will be less than 0.1 mil per year. The use of the 0.1 mil per year rate is a very conservative estimate, since the actual loss of metal for mild service conditions is not readily detect-able.

Actual erosion of the tubes will not be uniform but will be a 3

localized phenomenon.

Therefore, the estimate of 6 ft /yr metal loss is even more conservative, since it is based on a uniform erosion rate over the entire condenser tube surface.

Due to the inert nature of this oxide and the conservatism of the corrosion rate projection, the potential quantity of removed material 1

is not included in the blowdown estimates listed in Table 5.3-4.

Reference:

American Society of Metals (ASM) 1976.

Source Book of Stainless Steels,Section III, American Society of Metals, Metals Park, Ohio.

4.

Not all chemicals shown on Table'3.6-3 are described in the text ( e.'g.,

Corrshield K-8, Potassium chromate); make sure that the use and loca-tion in the water use plan is described for each chemical in the table.

Response

Sections 3.6.1, an'd 3. 6. 7, and Table 3.6-3 have been revised (Amend-ment 6) so that the uses for all chemicals listed in Table 3.6-3 are discussed in the text.

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.6.

Provide a copy,o f the State endangered / threatened species list and relevant information on known/ expected distributions of listed species.

Response

The wildlife classification for the Commonwealth of Pennsylvania is shown in Table 1.

This classification identifies the state-listed endangered and threatened species in Pennsylvania.

The state-listed endangered or threatened species which are found or are expected to be found at the BVPS-2 site are included in ER Table 2.2-10, Amendment 3.

The Pennsylvania Game Commission maintains a wildlife data base to pro-vide information on distribution and habitat preference for numerous fish and wildlife species.

This includes information on the presence or absence of each species by county.

Ten of the 13 state-listed endangered or threatened species are expected to be present in all counties of Pennsylvania.

The other three species are expected to be present in some counties, and their occurrence in the remaining coun-ties is unknown.

Figures 1 through 4 display the distribution of all state-listed endangered or threatened species in the Commonwealth of Pennsylvania.

None of the state-listed threatened / endangered species has been confirmed to be absent in any county.

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Table 1

$4 i L,7.1 GME ColeEs3I:s Pt. III C3 APT 11 147. VEL LIFT CLL$sITICATICII tenhe hap,

$gg, A. BIRDE...................... 147.1 S. Muea6LS..................... 147.21 EUnc3 art 1R A.

IIIDS i 147.1. ClaseLficacias of birds.

The felismans birds santL be classified as fo11ames (1) andamoured.

(1) said Engia (Ea11ammens 1-%)

une as.L (n=<1==

1.emme)

(ii) s (iii) skert-eared 01 (Asse f1-=)

(iv) newsan's vens C,

- w,wu )

(2) Teressamed.

(1) Lasse stataam (.Iantrymmes analia)

(ii) amersaan 8&stamu (3eemmus

!.-**=*-

-)

(LL1) Upland Sandesome- (amrcsemna f==g* *wa)

(iv) t h Tama wh*1 h i.== miser)

(v) seden area (csanothmens plasamsta)

(vt) Emma&aw' a someone t-h-==i-. ")

(3) semesse et Cammmma.

(1) Games alma ammen (Ameme humadias)

(it) Camper s Emma (Aam1pasar essamm11) 8 (iii) --'" Ramk (Easma llamasus)

(19) Earthema Emertar (C&amme symmmme)

(v) asemasse (CaLhmes visgnatamme)

(vt) asum out (Tyes albs)

(vtt) amenmedas usadomaner w==== pas arremumamonnime)

(vtii) Perpts annessa (Feegan seats)

(in) saamma seem amismenerums palamarsal (s) semeses an==ma-a (sialaa esa11a)

(ut) ommenempyme sommeno (Ammmerumme __

_)

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Table'l (cont'd) a.p. :67 wicurt CussmCanes sa s ist.1 (111) vesper Sparrow (Posecetas Er-i-a)

(6) Status undetermined.

(1) Serthern Geehaark (Ameipiter gentilis)

(11) Sharp-shimmed Emus (Accipiter striacus)

(iii) 'rT; c.4 Out (Asia acus)

(iv) 141p= pose =e111 (Capr$malgus vociferus)

(v) TailouMellied tar--h-e (Sphyrepices varius)

(vi) Lease Flycatcher (Inspidenas staamus)

(vii) Scholina (,Delianssyn orysivorus)

(3) tuairpated.

(1) osprey (remdise h=f'==e==)

(ii) peregrias ralaea (raico peregrimma)

(iii) Creasse Prairie Chistas ( W.

-' - cupide)

(iv) Piping Plever (Charadrine maladas)

(y) Commes Tess (Stores hirunde)

(ril Leggerhead Shrike (Lamias ladeviciammas)

(vii) m==<===

(3 pisa w an=a)

(F111) h 's Sparrow (A1mmeh114 asesivelia)

(1s) Lart Sparrow (Chandastas grammasus)

(6) n==<==e.

i (1)

N M N IeSis% E

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113.

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Table 1 (cont'd) sa i 147.n aus c a uss:en it. :::

SCSCI1PTER 8. MAleaLS.

I 147.u. Classificacios of ammals.

h fallswtag -la sas11 be classified as follows:

(1) Indmaserad.

(1)

Tan-Sac Ofyetis w alia)

(2) ar== w.

(1) sman-fested myects ceretta leikia)

(11) Eascess Weedrac Olmetams flottaama)

(3) Spostas of Comeers.

(1) Emma's Lit:1a Seema Set Otyetis wi t )

(ii) h sare (Lapes americaas)

(iii) assic Tele Osterecus carecorraisus)

(iv) Spotted Skumic (Spuosale puserius)

(v) River ottee (Laara **1a)

(vi) Setent (Lysa refus)

(4) staeus

• w w.

(1) liaryland Shrew (Seren festinalis)

(ii) unser Shree (Seren. palastria penstulatus)

(1111 unser Shrup (Severs palustris albibestia)

(iv) Figur Straw Ottarseeres her1)

(v) Leems Shrew (crycecia perve)

(vt) Samh See (Lassares omsasias)

(vti) Suves-tetred les Gassasysteria meetiveeens)

(v111) Buentag Sea (Nyetisetus humeralia)

(1a) Bue antiand Coctenta n (371 % trammationalis)

(a) seseems Pos Squirret (Seieres asser vulpsame) l 114.

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Table 1 (cont'd)

Chap. 147 WIO L FI CLASSI?tCAT:CN

!8 1 167.21 (x1) Rice Rat (Orysomys palustrial (E11) Red-bacsed Vote (Clethr14eoevo gappert ruoicola)

(x111) Red-backed 'lois (Cletariosoeve sappert paludi&Jla)

(siv) Coyote (Canis latrons)

(av) Badser ( asidea casas)

(zwi) Lamac Weasei Otseceia nive11a)

(zwii) Marten Otartes emeriamma)

(aviii) Fischer Otartes peammaci)

(sta) tascara Maestata lion (Telis concolor cousar)

(um) Lyam (Lyns canadensis)

(3) Extirpated.

(1) tancesa cesy Weif (r. ants lupus tynasa)

(ii) volverine (Culo sula)

(iii) Wapiti (Cervus elastaus camadanais)

(iv) Mosee (Alces alcos)

(v) 31 ass (Biasa biana timos)

Seurse Fa. 3. Dee. Ms. 8b)65. Filed March 11. 1943, 9:00 a.a.

113.

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e 7.

Indicate which model was used to estimate the chemical dilution in plant non-radiological liquid discharges, radiological discharge model, or thermal discharge model.

Include a justification of the values found in Table 5.3-4A of the ER.

Response

As recommended for initial dilution in Regulatory Guide 1.113, the surface discharge model by Shirazi and Davis was used to estimate chemical dilution factors.

The results were inte rpolated from the Workbook g Thermal Prediction, Vol. 2, Surface Discharge, by M. A.

Shirazi and L. R. Davis, -Pacific Northwest Environmental Research Laboratory, Corvallis, Oregon, May 1974, PB-235 841.

Typical of near-field predictions, decay is negligible; the model is equally applicable to radiological, chemical, - or thermal discharges.

To determine the r.ixing zones for the four constituents listed in Table 5.3-4a, the dilution requirements for each of the constituents were first calculated. As an example, the maximum concentration of nitrite in the cooling tower blowdown is 1.59 ppm, while the stream standard is 1.0 ppm, and the maximum Ohio River concentration recorded at the site is 0.66 ppm.

The amcunt of Ohio River water required to

~ dilute the cooling tower blowdown to the 1.0 ppm stream standard

= (1.59-1)/(1-0.66) = 2 (that is, two volumes of Ohio River water to one volume of cooling tower blowdown). This required dilution was then used to determine-the values listed in Table 5.3-4a using graphs developed from the Shirazi and Davis surfa"ce discharge model.

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