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JUL 0 3 t972

Docket Hos. 50-4060-40150-402

and 50-403

Carolina Power 8 Light CompanyATTN: Hr. J. A. Jones, Senior %lice Pres'.

Engineering and Operating Group336 Fayetteville StreetRaleigh, North Carolina 27602

Gentlemen:

A visit to the proposed Shearon Harris Nuclear Power Plant site was madeon June 13, 'l4, 1972, by a team from the Directorate of Licensing andBattelle Hemorial Institute, Pacific Northwest Laboratories, to,reviewenvironmental factors related to the construction and operation of the plant.As a result of this visit and our continuing review, additional informationwill be required to continue,our review. Accord)ngly, please submit theinformation requested as identified in the enclosure to this letter. Yourreply should consist of three signed originals and 297 additional copiesas a sequentially numbered supplement to your Environmental Report.

In order to maintain our licensing review schedule we will need a completelyadequate response by July 21, 1972. Please inform us within seven daysafter receipt of this letter to your confirmation of the schedule or thedate you will be able to meet. If you cannot meet our specific date orif your reply is not fully responsive to our requests, it is highly likelythat the overall schedule for completing the licensing review for thisproject will. have to be extended. Since reassignment of the staff's effortswill require completion of the new assignment prior to returning to thisproject, the extent of extension will most likely be greater than theextent of delay in your response. t

Sincerely>

Original signed byDaniel R Muller

Daniel R. Huller, Assistant Directorfor Environmental Projects

Directorate of Licensing

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SURNAME >

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Carolina Power 8 Light Company &2M JUL 03 1972

Enclosure:Request for Additional Information

cc: Mr. George F. Trowbridge, Esg.Shaw, Pittman, Potts, Trowbridge

and Madden91O Seventeenth Street, N.W.Hashirgton, D. C. 2OOOG

Mr. C. D. Barham, Jr., Esq.Carolina Power I'E Light Company336 Fayetteville StreetRaleigh, North Carolina 27602

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~VEST POR ADDITIONAL INFORMATION

ENVIROmmTAL REVmr

SHHARON HARRIS UNITS 1, 2, 3 AND 4

Please provide detailed information on the following:

As PHYSICAL PLANT

1. The elevation of the bottom of the intake aperture.

2. The water velocity at the intake screens, maximum, rate of waterintake, and intake screen mesh size.

3. The tx'ansit time of water through the condenser cooling system.

4. A description of the outfall structure; the water velocity atthe point of discharge.

5. The expected average annual flow through the culvert in the dike.

6. Plans to make the color and texture of the plant aestheticallycompatible with the natural environs; how the plant profile fitswith the natural environs and the surrounding topogxaphy.

7. A description of the load cycle expected for the Harris Plant overa 24-hour pexiod and the associated circulating watex temperature

, fluctuations.

8. Hest-rate curves for various turbine back pressuxes in order topermit eva1uation of thermal effects and operational costs of thevarious alternatives.

9. Detailed. diagrams or plans of the circulating watex system intakeand discharge structures.

1. The temperature differential between the water discharged fromthe Harris Reservoixs and the Cape Pear River and the expectedseasonal, variation in temperature and volume of the reserviordischarge.

2. The increase in the silt load discharged to the Cape Pear Iverfrom White Oak and Buckhorn Creeks which will result from theconstruction of Harris Units 1, 2, 3, and 4, if any.

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The kinds, amounts and concentrations of chemicals to be dis-charged in the liquid wastes released to Che cooling reservoir.

4. A description of the method of chlorination and concentrationsof chlorine which will be intxoduced into the condenser coolingsystem to control fouling.

5.

6.

The rate of head dissipation of the condenser cooling dischargein the cooling reservoir and data, computations and diagrams ofthe thermal plume (isothexms at the vater surface) and tempera-tuxe stratification expected in the Harxis Reservoir duringwinter and summer climatic extremes.

Describe Che program that villbe used to monitox thexmal patternsin Che Harris Reservoir during plant operation.

70 Data relating to suspended sediment that is available for BuckhornCreek and Che Cape Fear River in the vicinity of Buckhorn Dam.

8. A detailed description of the program that will be used Co

minimise silt load discharge to the Cape Pear River duringconstruction.

The volume and residual chlorine concentration of the sanitaryvaste treatment system and whether this discharge will be com-bined with or separate from the condenser cooling discharge.

10, The D.O. of Che bottom water (below the thermocline) in thereservoir and Che expected seasonal variation in the D.O.

C4 BCOLOGY OF SATB AND SURROUNDXHGS

A description of the extent that vegetation will be removed fromthe land that, villbe inundated by the cooing reservoir.

20 Results of entrainment studies on Che Cape Fear River andWhiteoak-Buckhorn Creek waters, and laboratory studies made onaquatic organism passage through the condenser cooling systemat the Brunswick Nuclear Power Plant (research directed byDx'. B J.. Copeland).

30 Results of recent limnological studies conducted by CarolinaPower and Light.

4, The. kinds of organisms that vill be sampled, at vhat frequency,and for what kinds of analyses, in the pre- and post-impoundement

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5. A description of fish management programs Chat are contemplatedfor the cooling watox'eservoix'stocking, rehabilitation, etc . ) ~

6. A discussion of the potential for breeding, feeding, and restingby waterfowl on the cooUng af terbay reservoirs.

De RADIGXOGXCAL DOSE

1. A detailed description of the proposed x'adiation monitoring programincluding sampling sites, types of samples, frecpxency of sampling,types of analysis, description of analysing equipment, consultantsfor the program and who wil1 conduct the samp 1ing and anlyz ing .

2. The exact locat$ ins and pro)ected usage (man-hrs/yr) of anticipatedrecreational sites on Harris Reservoix .

3. The proposed plans for public access to the exclusion area; when,where and how ofCen.

4 ~ The location and average annual occupancy for the proposed"Energy and Environmental Center . "

E. NEED FOR POMER AND COST BENEFXT

1 System peak load and capacity data for the years 1965-1976 ~

2i 'st&nates of capital and fuel costs for nucleax', oil, and coalplants ~

3. Based on 1971 Rake County tax structure, the expected county taxpayments on the Harris plant.

4 ~ Capital and annus 1 operating costs for the fo1lowing cool ingoptions all designed for the same net generating capacity I

a. Cooling late (ref . case)b. Mechnical draft tower (including 7,200 acre pond)c. Natux'al dxaft tower (including 7,200 acre pond)

5. Any land use plans made by Che county planning board fox thearea to be occupied by the plant; typical land costs in thisalcaF

6. The requixements for nuclear fuels, in terms of kilograms ofuranium and the percentage of U-235, for the initial 1oad ings ofUnits 1 9 29 3 and 4, and for the subsequent reloading during steadystate o eration.

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Describe the basic data, assumptions, and methods used to determine,the evaporation from the pxoposed res ervoirs .

The variation, by month, of the fo11owing reservoir energy budgetcomponents for the 10,000 and 400 acx'e reservoirs

a) natura 1 evapor tat%on,b)'orced evaporation,c) natural heat conduction to the atmosphere,d) foread heat conduction to the atmosphere.

Describe the assumptions, data, and methods used to determine thesecomponents.

Quantitativoly describe the annual frequency of occurrence offogging and icing resulting from the proposed reservoirs fox theregion of influonce. What would be the extent of fogging andicing for a worse caso conditionf Xf operating ezpex'ience isavailable and cited, demonstrate its applicability to theShearon Harris plant and site. Describe the basis data,assumptions, and methods used.

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Qhat 1ocal features and activities might ba affected by reservoirfogging and icing, and in what wayItI

~ntitatively describe how the results of the analysis -conductedin 4. would change fox'he 7000 acre make-up watex'eservoixnecessary for a closed-cycle cooling alternative, where onlythe heat of the blowdown is addai to the reservoir.

7. Describe more fully the physical and opexating chax'acteristicsand environmental impact of the cooling tower system which wouldmeet the requirements of the Shearon Harris plant, including!

a) sage 3

1) numbers,c) probable placement on propex tyd) evaporation,e) b lowdown,

(1) quantity(2) temperature(3) chemical content

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8, Develop a description similar to that called for in 7. forfeasible spray cooling systems (ponds and/or canals).

9. Hhat would be the feasibility cost, physical and operatingcharacteristics and water consumption of a hybrid coolingtower (Narley Oo., dry in winter, evaporative in summer) forthe Shearon Harris plant't

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