ML20024F049

Amend 3 to Environ Rept - OL Stage

ML20024F049
Person / Time
Site:	Braidwood
Issue date:	09/30/1983
From:	COMMONWEALTH EDISON CO.
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ML20024F048	List: ML20024F047 ML20024F049
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ENVR-830930, NUDOCS 8309080154
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Braidwood ER-OLS AMENOMENT 3 SEPTEMBER 1983 INSTRUCTIONS FOR UP0ATING YOUR ER To update your copy of the Braidwood Station Environmental Report - Operating License Stage, please remove and aestroy the following pages and figures ana insert the Amendment 3 pages and figures as indicated.

VOLUME 1 REMOVE INSERT Page 11 Page 11 Pages 2.1-9/2.1-10 ano Pages 2.1-9/2.1-10 and 2.1-11/2.1-12 2.1-11/2.1-12 Figure 2.1-4 Figure 2.1-4 Page 2.5-1/ 2. 5-2 Pages 2.5-1 and 2.5-la/2.5-2 VOLUME 2 REMOVE INSERT Page 11 Page 11 Page 3.0-v Page 3.0-v Page 3.3-3/3.3-4 Pages 3.3-3 and 3.3-3a/3.3-4 Pages 3.4-la/3.4-2 ana Pages 3.4-2/3.4-3 anc 3.4-3/3.44 3.4-3a/3.4-4 Figures 3.4-6, 3.4-7 and 3.4-8 Page 5.0-1/5.0-11 Page 5.0-1/5.0-11 Pages 5.2-5/5.2-6 through Pages 5.2-5/5.2-6 through 5.2-15/5.2-16 5.2-15/5.2-16 Page 5.2-19/5.2-20 Page 5.2-19/5.2-20 Pages 5.6-1/5.6-2 thrcugh Pages 5.6-1/5.6-2 through 5.6-7 5.6-7 Pages 8.1-1/8.1-2 through Pages 8.1-1/8.1-2 through 8.1-5/8.1-6 8.1-5/8.1-6 Page 13.0-21/13.0-22 Page 13.0-21/13.0-22 Page QE291.10-1 (Amenament 2) Page QE291.10-1 Page QE310.1-1 (Amenament 2) Page QE310.1-1 Page QE310.8-1 (Amendment 2) Page QE310.8-1 Amendment 3 tao Page QO-1 Page-QE240.1-1/QE240.1-2 Figure QE240.1-1 Figure QE240.1-2

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ADOCK 05000456 PDR

Braidwood ER-OLS AMENDMENT 3

! SEPTEMBER 1983 VOLUME 2 (continued)

REMOVE INSERT Page QE240.3-1 Page QE240.4-1/QE240.4-2 Page QE240.5-1/QE240.5-2 Page QE290.5-1 Page QE290.6-1 Page QE290.7-1 1 Figure QE290.7-1 Page QE290.8-1 l

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Braidwood ER-OLS AMENDMENT 1 FEBRUARY 1983 AMENDMENT 2 JULY 1983 AMENDMENT 3 SEPTEMBER 1983 l

l BRAIDWOOD NUCLEAR GENERATING STATION - UNITS 1 & 2 ENVIRONMENTAL REPORT - OPERATING LICENSE STAGE 4

CONTENTS CHAPTER VOLUME Chapter 8.0 - Economic and Social Effects of Station Construction and_ Operation 2 Chapter 9.0 - Alternative Energy Sources and Sites 2 Chapter 10.0 - Station Design Alternatives 2 Chapter 11.0 - Summary of Cost-Benefit Analysis 2

' Chapter 12.0 - Environmental Approvals and Consultation 2 O Chapter 13.0 - References 2 2

Amendment 1 - Voluntary Revisions l1 2 - NRC Review Questions and Responses 2 2 Amendment Amendment 3 - NRC Heview Questions and Responses 2 l3 11

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1

LOCATION AND ORIENTATION OF PRINCIPAL PLANT STRUCTURES I i E

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• l 8309080154-o( I

l Braidwood ER-OLS AMENDMENT 3 SEPTENBER 1983 g- The major livestock raised in the three counties are cattle and

' \_)s hogs. Table 2.1-12 lists the number of head of livestock in the three counties for 1974 and 1975. . Milk cows and milk goats were surveyed within a 5-mile radius of the Braidwood Station. The

! results are shown in Table 2.1-13 by compass sector. The only commercial dairy herd within 5 miles of the station is located approximately 2. 2 miles east and 2.3 miles east-southeast of the site. . The milk from this herd, consisting of approximately 50 head of dairy cattle, is shipped to Pleasant View Dairy in

' Highland," Indiana, and used for Grade A Milk Production (Morris l 1977). ' s As shown in. Table 2.1-7, the area within 5 miles of the station is not heavily industrialized. The nearest industries are locatedsin. Coal City, Illinois, approximately 3.5 miles north-west of'the station. Table 2.1-7 lists all industries within 10 l miles of the site along with their respective products and l approximate. number of employees.

Ii As discussed in Subsection" 2.1. 2.1, there are 'several cities and villages within 5 miles of the station. Figure 2.1-8 locates the cities and villages within' 10 miles of the station and notes their 1963 populations. Table 2.1-14 lists the nearest residence 3 1

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and garden in each of the 16 sectors to a distance of 5 miles.

The nearest residence and garden are 0.3 miles away from the

-station. s O As shown in Table 2.1-6 there are several privately owned recreation areas within 5 miles of the station that provide a

,' variety of recreational activities. Table 2.1-6 lists all private- recreation facilities within 10 miles of the station along with their location, their total membership, and their estimated, peak daily attendance. .

The Des Plaines Conservation Area is located approximately 8 miles north of the station. This 493)-acre area offers camping, picnicking, fishing, boating, and hunting (Illinois Department of Conse rvation 198,2 ) . Table 2.1-6 lists the state recreational 3 facilities within 10 miles of the station along with their location, 1981 attendance, and estimated peak daily attendance.

There are seven schools within 5 miles 5f - thc. station. . Table 2.1-8 lists all schools with their location', grade levels, and

., number of teachers and students. There are nof hospitals within 5

' u~ miles of the station. The nearest hospital ic ~ located . in Morris, Illinois, approximately 13 miles northwest of the . station (American Hospital Association 1972).

The major trahsportation routes 'within 5 miles of the Braidwood

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Station include the highways and failroads shown in Figure 2.1-6.

The Kankakee River ' located approxircately13 miles east.of the northeastern site boundary is primarily-used for recreational

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Braidwood ER-OLS The nearest highways to the station, Illinois State Routes 53 and g 129, are adjacent to the northwest boundary of the site.

Interstate 55 is less than 2 miles west-northwest of the '

centerline of the reactors and State Route 113 is approximately 2 miles north of the station. Figure 2.1-6 illustrates these highways and their traffic volumes. Relatively high traffic flow occurs on Interstate 55 with a 24-hour annual average of 13,700 cars. State Routes'129 and 113 are also well-traveled, having 24-hour annual averages near their interchanges with Interstate 55 of 2,900 and 4,300 respectively. State Route 53 has 24-hour annual averages varying from 600 to 4,600 cars within 5 miles of the station.

As shown in Figure 2.1-6, there are four railroads within 5 miles of the station. The Illinois Central Gulf Railroad runs parallel to and between State Routes 53 and 129 and provides spur track access to the site. This line, which is a secondary freight route, has six passenger trains per day (three northbound and three southbound) , six piggy-backs per day (three northbound and three southbound) , and an occasional northbound coal train in addition to shipments to and from the Joliet Army Ammunition Plant located approximately 8 miles northeast of the site (Turnland 1977). The Illinois Central Gulf Railroad also has a line located approximately 2.5 miles west of the site. Both tracks are designated as class 4 by the Illinois Central Gulf Railroad in accordance track saf ety with Federal standards (Turnland Railroad 1977) . Administration (FRA) llh In addition to the Illinois Central Gulf Railroad, rail transpor-tation within 5 miles of the station is provided by the Atchison, Tc>eka and Santa Fe Railroad located approximately 4 miles northwest of the station and the Norfolk and Western Railroad located approximately 4.5 miles southeast of the station. The Norfolk and Western Railroad does not operate any scheduled passenger trains over the portion of the railroad near the s ta tion. The maximum allowable speed for freight trains over this segment of trackage is 60 mph or FRA Class 4 track (Fis hwick 1977).

There are no airports within 5 miles of the station. There are cix natural gas pipelines, three crude oil pipelines, and one refined products pipeline within 5 miles of the station. Figure 2.1-11 locates these pipelines, and Table 2.1-15 summarizes the pipe size, pipe age, operating pressure, depth of burial, and location and type of isolation valves for each buried pipeline.

The area within a 5-mile radius is primarily zoned as cgricultural land with the exception of the land surrounding the cities and villages within 5 miles. These areas are zoned as commercial, residential, manufacturing, or business districts.

Several of the private recreational f acilitics are zoned as business areas. In addition there are some areas within 5 miles ggg that are designated as mineral extraction districts. (Arp 1977; v'

2.1-10

Braidwood ER-OLS AMENDMENP 3 SEPTEMBER 1983 l

Grundy County Planning Commission 1969a, 1969b, and 1974;

' (]) valentine 1977).

2.1.3.1.2 Land Use within 50 Miles The area within a 50-mile radius of the Braidwood Station is primarily agricultural land with the exception of the heavily populated areas in the north-northeast and northeast directions ,

as discussed in Subsection 2.1.2.2.

Figure 2.1-12 -outlines the sixteen 22.5-degree azimuthal sectors with relation to county boundaries within a 50-mile radius of the site. Table 2.1- 16 lists the ma jor c rops grown within the 50-mile radius by county and gives the total production and yield for each crop. Tables 2.1-17, 2.1-18, and 2.1-19 summarize the annual meat production (beef, pork, and lamb and mutton res pectively) within 50 miles of the station by sectors centered on the 16 compass sectors and bounded by radii of 1, 2, 3, 4, 5, 10, 20, 30, 40, and 50 miles. Table 2.1-20 outlines the milk production within a 50-mile radius of the station by sectors, and Tables 2.1-21 and 2.1-21A sumanarize the vegetable production within 50 miles 3

of the station by sectors.

The annual grazing season for milk cows within 50 miles of the Braidwood Station is normally from April to November, depending on the weather. Beef animals can graze from April to Januarye O

depending on the amount of snow cover, which can prevent grazii.g if it is too deep. Both milk and meat animals receive supplemental feeding (corn'and grass silage, green chop feeding, and hay feeding) during the winter months when they cannot graze.

Oats, alf alfa, sorghum /sudex, and corn are harvested for forage.

Table 2.1-22 summarizes the yields for these crops (Whitson

-1977).

Table 2.1-23 lists the Illinois public hunting areas within 50 miles of the station along with the kind of hunting at each location. Table 2.1-24 gives the 1977 Illinois hunting season dates along with the possession limits, and Table 2.1-25 summarizes the number of hunting licenses sold in Illinois within 50 miles of the station in 1975.

2.1.3.2 Water Use r

2.1.3.2.1 Surface Water As-shown in Figure 2.1-2, the Kankakee River, at its closest approach, is approximstely 3 miles east of the northeastern site boundary. This point is 'approximately 12 river miles upstream of the headwaters of the Illinois River at the confluence of the Kankakee.and Des Plaines Rivers. Figure 2.1-13 outlines the Kankakee and Illinois rivers within a 50-mile radius downstream from the site.

,.J 2.1-11

Braidwood ER-OLS The Kankakee River from its confluence with the Des Plaines River to 5. 5 miles upstream of the confluence is a " navigable waters of the United States" as defined by the U. S. Army Corps of ,

lll Engineers regulations 33 CFR 329 (July 19, 1977) and is subject to all Corps regulations governing such waters. The entire Kankakee River, including the remaining upstream portions, is a

" navigable waters" as defined by the Federal Water Pollution Control Act, Section 502, and is also a " waters of the United States" as defined by the U.S. Army Corps of Engineers regulations 33 CFR 323 (July 19, 1977) and is subject to the U.S.

EPA and Corps regulations governing such waters. There are no barge statistics available for the Kankakee River since no commercial barges have been on the portion considered " navigable waters of the United States" for many years. There is no designated shipping channel for the portion of the river that is Navigable Waters of the United States, and the rest of the river is considered navigable from bank to bank. There.is no designated depth of channel for any portion of the river. The nearest downstream and upstream dams to the site are the fixed dams located at Wilmington, approximately 4 miles downstream f rom the intake point, and at Kankakee, approximately 15 miles upstream from the the intake point (Carlock 1977) . The Wilmington dam is 11 feet high and forms a pool 2 miles long.

The Kankakee dam is 12 feet high and forms a pool 6 miles long.

The U.S. Corps of Engineers maintains 'o dams or locks on the Kankakee River (Klemba 1977) . The Kankakee River is used primarily for recreational purposes, such as boating, fishing, g and swimming (Carlock 1977) . W The Illinois River is considered " navigable waters of the United States," " navigable waters" and " waters of the United States" and is primarily used for navigation within a 50-mile radial distance downstream from the Braidwood Station. Table 2.1-26 lists the commodities that traveled upriver and downriver on the Illinois Fiver in 1976 within 50 miles of the site through the Dresden Island Lock, approximately 15 river miles downstream from the station, the Marseilles Lock, approximately 40 river miles downstream from the station, and the Starved Rock Lock, approximately 56 river miles downstream from the station. The location of these locks in relation to the Braidwood Station is shown in Figure 2.1-13.

Sport fishing is the major use of the Kankakee River, alt hough recreational boating and swimming are important in the area near the Wilmington Dam. A creel census was conducted on the Kankakee River near the Braidwood Station from June 30 through August 3, 1973, by the Commonwealth Edison Company (Ceco) during the 1972 through 1973 Braidwood Aquatic Monitoring Program. A total of 186 fishermen were interviewed.

All fishermen interviewed during the survey were residents of Illinois and many (44%) lived within 5 miles of the Kankakee River. Almost all the fishermen interviewed ( 97.1 %) were lll interested only in the recreational aspects of fishing, only 2.9%

v 2.1-12

() Braidwood ER-OLS AMENDMENT 3 SEPTEMBER 1983 2.5 GEOLOGY 2.5.1 Summary A summary of the regional and site geologic characteristics for

, _the Braiawoou Nuclear Generating Station - Units 1 & 2 (Braidwood Station) was presented in the Environmental Report -

Construction Permit Stage (ER-CPS). Data from the laboratory testing, soil borings, test pits, and excavations for the main buildings anc cooling lake completed since the suumittal of the ER-CPS provide acaitional information on the stratigreony, en-gineering geology, and hydrogeology of the glacial arift and uppermost bedrock units. Tne following subsections present a more detaileo description of the stratigraphy at the cite. They include the more recent site data and up-to-date information from appropriate literature. Subsection 2.4.2 gives a descrip-tion of the hydrogeologic characteristics of the glacial arift and uppermost bedrock units.

2.5.2 Site Stratigrapny

()

Figure 2.5-1 shows the stratigraphic units identifiea curing geologic mapping of the excavation for the main builcings.

The term " soil" in this subsection is used in the engineering sense to indicate the' deposits overlying the bedrock. The term

" agricultural soils" refers to that portion of the " soil", usu-ally the upper few feet, that has been modified by weatnering.

2.5.2.1 Agricultural Soils Figure 2.5-2 is a map of the agricultural and prime farmland l3 soils at the Braidwood site. Before station construction ac-l tivities began, the agricultural soils were removed from a I large portion of the site area by coal strip mining. Tne agri-cultural soils were completely removeo from the power block area ano partially removed from under the cooling pona dikes during construction.

l Seven agricultural soils are present at the Braidwood site, as l shown in Figure 2.5-2: Watseka loamy fine sand (Unit No. 49);

Bloomfielo fine sana (Unit No. 53); Plainfield sana (Unit No.

l 54); Maumee fine sandy loam (Unit No. 89); Aae loamy fine sand 3 (Unit No. 98); Pittwood fine sandy loam (Unit No. 130); and i Canisteo loam (Unit No. 347); (Wascner et al. 1962; May 1983).

-r T Tne prime farmlano soils of the Braidwood site. include Maumee

\_) fine sandy loam, Pittwood fine sandy loam, and Canisteo loam.

l 2.5-1

) Braidwood ER-OLS AMENDMENT 3 SEPTEMBER 1983 Maumee series soils consist of deep, poorly drained soils formed in sandy sediments on outwash plains and lake plains. Typi-cally, the surface layer is black loamy fine sand 53 cm (21 in) deep. The Pittwood series consists of deep, poorly drained, nearly level or slightly depressional soils on sandy outwash plains or floodplains. The surface layer is black fine sandy 3 loam roughly 40 cm (16 in) thick. Canisteo series soils consist of deep, poorly drained soils formed in glacial till under tall grass prairie and-sedges on the rims of depressions on glacial till plains. These soils have black and very dark gray clay loam surface layers 51 cm (20 in) thick (U.S. Soil Conservation Service 1983).

4 O

kJ 2.5-la

Braidwood ER-OLS 2.5.2.2 Soil Deposits (gg 2.5.2.2.1 Parkland Sand The Parkland Sand was distinguished from the underlying Equality Formation during the excavation mapping program. At the site, the Parkland Sand is typically a light brown to reddish-brown, silty, very fine to fine, wind-blown sand that was derived from the underlying silts and sands of the Equality Formation. The Parkland Sand blankets the site vicinity in sheet-like deposits, except in strip-mined areas and areas where wind erosion has exposed the underlying Equality Formation (blowouts) . Locally, some small, stabilized dunes of Parkland Sand are found also.

Willman and Frye (1970) state that the dunes were formed in Woodfordian and Holocene times soon af ter the earlier-formed terracks were free from glacial flooding. In geologic sections mapped in the main plant excavation, the Parkland Sand ranged from 5.7 to 9.5 feet thick, with an average thickness of 7.4 feet.

2.5.2.2.2 Equality Formation The Equality Formation consists of lacustrine sands and silts and is subdivided into the Dolton and Carmi members (Ray 1975). Only the Dolton Member is present at the site. It blankets the entire site vicinity except where it was removed by strip mining.

The Dolton Member primarily consists of yellowish-brown to gray, fine sand that was deposited mostly in beaches and bars of glacial Lake Wauponsee (Ray 1975) . The overall consistency of the Dolton Member is medium dense. Based on the results of borings drilled at the site, the Dolton Member ranges from approximately 14.0 to 31.2 feet thick and averages approximately '

23 feet thick.

2.5.2.2.3 Wedron Formation The Yorkville Till Member of the Wedron Formation appeared to

! underlie the entire site wherever the Dolton lacustrine sand was

! encounter ed. In additon to the Yorkville Till Member, which was I described in the ER-CPS, the Tiskilwa Till Member of the Wedron l Formation was tentatively identified in the power block l excavation by the Illinois State Geological Survey (Duschbach 1977). Underlying the Tiskilwa Till Member are several feet of glacial ddposits of at least Wedron age (Buschbach 1977).

l Herein, the Yorkville and Tiskilwa till members and the l underlying glacial deposits shall be referred to as the Wedron l Formation. The Wedron Formation f requently consists of three i units: an upper till predominantly made up of a dark gray clayey I silt to silty clay, with interspersed sand and dolomitic gravels; an outwash layer of grayish-brown, sandy gravel to gravelly sand, with many cobbles and some boulders; and a till that is l

predominantly a brownish-gray to gray, very sandy silt, with some l

l l 2.5-2 l

A

(-) Braidwood ER-OLS AMENDMENT 3 SEPTEMBER 1983 CHAPTER 3.0 - THE STATION LIST OF FIGURES NUMBER TITLE 3.1-1 Arrangement of Central Group of Builoings 3.2-1 Simplified Diagram of a Pressurized Water Reactor 3.3-1 Water Usage Flow Diagram 3.4-1 General Layout of the Braidwood Cooling Pond 3.4-2 Intake Structure on Kankakee River 3.4-3 Discharge Structure on Kankakee River 3.4-4 Location of Intake and Discharge Structures on Kankakee River 3.4-5 Braidwood Pond Screen House 3.4-6 Circulating Water Discharge Structure 3.4-7 Essential Cooling Pond 3 3.4-8 Outocor Essential Service Water Discharge Structure

=3.5-1 Liquid Radwaste Flow Diagram 3.5-2 Gaseous Radwaste Flow Diagram s ,) 3.5-3 General Arrangement of Roof Plan Showing Location of Vent Stacks 3.'5-4 Radwaste Disposal System Flow Diagram 3.9-1 General Locations of New Braidwood Station Transmis-sion Line Right-o f-Way 3.9-2 Detailed Route Map and Structure Profiles for Braidwood to Crete Right-of-Way O

v 3.0-v

(,)g Braidwood ER-OLS AMENDMENT 3 SEPTEMBER 1983 Under most circumstances, the two-unit Braidwood Station will tur capable of operation at full load with cooling pond consump-tive losses supplied by withdrawal of water from the Kankakee River.

There is an agreement with the Illinois Department of Conserva-tion that the maximum withdrawal rate from the Kankakee River will be 160 cfs. In addition, water withdrawal will cease when the river flow is at 442 cfs, or less, and withdrawal will be limited so that the flow of the river would not be reduced below 442 cfs. The station can operate without make-up water from the river by drawing down the pond level from the normal 3 elevation of 595.0 f t MSL to as low as 592.8 feet MSL. When this level is reached the units will be shut of f until the river flow increases to the point where water withdrawal can commence. This operational mode will have less impact on the river at low flow conditions than withdrawing 10% of river flow.

Since the essential service water cooling pond is an excavated area within.the cooling pond, the pond level cut-off at to 592.8 ft MSL would not have an effect on the availability of

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'L/ water for routine or emergency shutdown of units.

3.3.2 Service Water Systems Service water is used to cool plant and auxiliary equipment.

There are two service water systems provided for the plant, the nonessential service and the essential service water systems.

3.3.2.1 Nonessential Service Water System The nonessential service water cools equipment that is not safety-related and not essential for the safe shutdown of the reactor. The water is taken from the circulating water sys-tem. 'After its use the nonessential service water returns to l the cooling pond along with the condenser cooling water. The nonessential service water circulation rate is about 78 efs per unit. Makeup and blowdown are sent to and taken from the cool-ing pond as was discussed in Subsection 3.3.1.

3.3.2.2 Essential Service Water System i The essential service water cools the equipment that is safety-related. The design provides for two identical, full-capacity systems for each unit. Each unit has two full-capac-

, 5 ity pumps, each of which takes suction from a separate supply l s_) line. This system supplies water to the reactor containment l fan coolers, the diesel generator coolers, the component cool-l ing heat exchangers and the other equipment necessary for the i

! 3.3-3 i

4 L

i

. 10 Braiowood ER-OLS AMENDMENT 3 SEPTEMBER 1983 i

safe shutdown of the reactor. The total required circulation rate-for the essential service. water system is approximately 54 cfs per unit. A small cooling pond, which also serves as the ultimate heat sink, is located within the cooling pond to main- .

' tain a 30-day supply of water for the essential service water system. This pond, which will remain. intact even if the larger pond fails, was formed lby excavating an area of 93.5 acres to a

-depth of 6 feet below the existing grace. The Dottom elevation

' is 584 feet MSL.

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! 3.3-3a

Braidwood ER-OLS AMENDMENT 2 JULY 1963 3.3.3 Potable Water Supply System Tne plant potable water treating system provides water from the Kankakee River for sanitary purposes. The makeup water is pumped from tne river into tne freshwater holding pona which 2 overflows into tne cooling pond. The potaole water is taken from tnis freshwater holding pona. Approximately 15,000 gal-lons per day are reauired for normal operation. Tne witharawal of the water complies with tne applicaole federal, state, ano local regulations. Further information.on sanitary water and its disposal is contained in Section 3.7.

3.3.4 _ Makeup Demineralizer System Surface water from either tne Kankakee River or the cooling pano is useo as raw water for cemineralizer makeup. Tnere are two identical cemineralizer trains, each capable of producing the total daily requirements averaging 150 gpm. The details of the makeup water system are aiscusseo in Subsection 3.6.3.

Seepage 3.3.5 O

The method of seepage control consists of a slurry cutoff trench made up of, depending on conditions, soil bentonite or cement centonite around the entire perimeter of the exterior cike. The slurry trench was constructed to an inpermeable layer below the oike, creating an impervious Darrier to impede water flow. The material uncerneath the slurry trench has been tested both in the laDoratory and field to determine its aver-age permeability. The permeability value of the slurry trench back fill was determined from research, past case histories, and laboratory anc fiela-cetermined values for the test sec-tion. Based on the measured and assumed values for permeaoil-ity, the amount of total seepage was calculated using finite element techniques.

The following data were used in a computer program developed to cetermine Seepage at a section consicered to be representative of the pond oike:

a. geometry of the cike section and foundation;

b. maximum prooable neaa;

c. material properties of the oike anc founda-tion materials; ano

d. boundary conoitions relatea to the site lh conditions.

3.3-4

/~)

~J Braidwood ER-OLS AMENDMENT 2 JULY 1983 AMENDMENT 3 SEPTEMBER 1983 The cooling pond is supplied with makeup water from the Kankakee River to compensate for losses due to evaporation, seepage, and blowdown. This makeup water is withdrawn from the river at an expected rate of 90.8 cubic feet per second (cfs) by means of a river intake structure illustrated in Figure 3.4-2. The intake structure operating floor is located at elevation 557 feet above mean sea level (MSL), which is above the 1975. flood (flood of record) elevation of 552 feet MSL.

The average flow and 7-day 10 year low flow of the Kankakee River at the intake are 3952 cfs and 442 cfs, and the corres-2 3 ponding water surface elevations are 538 and 535.5 feet MSL.

The intake structure houses three intake pumps; two pumps of 53.5 cfs capacity are used to supply water for normal operation and a third pump of the same capacity serves as a stanouy and is used for pond filling. The velocity at the river intake structure is between 0.32 and 0.48 feet per second (fps) baseo on two-unit operation.

At the river intake structure the water flows through bar

.('])

'- grills and vertical traveling screens to remove debris from the intake water. The debris removeo from the screens is disposed of off the site by an independent contractor.

The blowdown from the cooling pond is released to the Kankakee River from a discharge structure illustrated in Figure 3.4-3.

Flow control is provided on the blowdown line so that flow may be terminated when both units are shut down or are being re-fueled. The location and orientation of the blowdown discharge and-the river intake structures are shown in Figure 3.4-4. The orientation of the discharge is approximately perpendicular to the river shoreline. The river intake structure is approxi-mately 2000 feet below the confluence of Horse Creek with the Kankakee River, ano the discharge structure is about 500 feet below-the intake _ structure. The oischarge is returned to the river at a maximum velocity of 4.3 fps ano at an increaseo temperature, wnich varies seasonally. Taole 3.4-1 shows the median monthly temperatures for the blowdown with both units operating at 100% loao factor. The predicted blowoown tempera-ture ranges from 490F in January to 880F in July.

As a result of the discharge of the blowdown into the flowing Kankakee River, a thermal plume is established downstream whose detailed temperature profile depends on river conditions and

,_ the blowdown characLcristics. A discussion of the extent and ef fect of this plume is in Section 5.1; a description of the

' (~) model used to estimate these parameters is in Appendix 5.lA.

3.4-2

Braiawood ER-OLS AMENDMENT 2 JULY 1983 AMENDMENT 3 SEPTEMBER 1983 Three vertical dry pit circulating water pumps per unit draw water from the cooling pond through a pona screen house near the pumps (see Figure 3.4-5). At the pond screen house the water flows through Dar grills and vertical traveling screens that remove debris from the intake water. The cebris removed from the screens is disposea of of f the site by an indepenaent contractor. For each unit, condenser cooling water is pumped through a 16-foot oiameter pipeline to the condenser, then through another 16-foot diameter pipeline to the discharge 3 outfall structure and back into the pond. Details of this discharge structure are shown in Figure 3.4-6. The Braidwood Station condenser cooling water requires a continuous flow of about 3250 cfs for the two units. This water is withorawn from the cooling pond and returned there with a temperature rise of about 220F, The total heat oissipatea to the condenser cool-ing water is approximately 1.6 x 1010 6tu/hr for the two units. Nonessential cooling water is withorawn similarly from the cooling pona.

)

Essential service water, at a flow rate of 108 cfs for two units, is cycled through the essential cooling pond that is g

contained within the larger cooling pond. The location of the essential cooling pond with relation to the larger cooling pona 3 ano the intake and discharge structures is shown in Figure 3.4-7. The essential service water discharge structure is shown in Figure 3.4-8.

The temperature of the larger cooling pona varies depending on the distance from the point of the discharge of the heated effluent. As shown in Table 3.4-2, the evaporation from the pond varies between 30.9 cfs and 72.2 cfs with two units oper-ating at 100% load factor. This evaporation includes both natural ano forced evaporation. Rainfall to the pond compen-sates in part for the evaporation. The annual average precipi-tation is 35.1 inches (see Table 2.3-1). The monthly precipi-tation ranges between 13.1 and 0.03 inches per month with an average of 2.92 inches per month. This rainfall results in adding about 6.2 to 11.7 cfs of rain to the pond or an average of 9.3 cfs for the year. Since this pond is perched, the run-off to the pond is negligiole.

The losses due to seepage are expected to be approximately 5 cfs. The blowoown necessary to maintain water chemistry is calculated using these evaporative and seepage losses ana gains from rainfall. An average blowdown of about 43.2 cfs can main-tain a total aissolved solids (TDS) level in the cooling pona gg 3.4-3

i

.i Braidwooo ER-OLS AMENDMENT 2 JULY 1983 AMENDMENT 3 SEPTEMBER 1983 of about 900 mg/ liter. The TDS level varies depending on the I2 river water quality'and evaporation rate. The average overall l water consumption-from the Kankakee River, which is the dif-ference between makeup and blowdown, is approximately 47.6 cfs. Studies have been cone to determine any effect on ponu water chemistry fIom leaching of substances from surface ano subsurface soils (see Subsection 2.4.1.4.2 and Section 5.4).

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Braidwooo ER-OLS AMENDMENT 1

() FEBRUARY 1983 AMENDMENT 2 JULY 1983 AMENDMENT 3 SEPTEMBER 1983 BRAIDWOOD NUCLEAR GENERATING STATION - UNITS 1 & 2 ENVIRONMENTAL REPORT - OPERATING LICENSE STAGE CONTENTS 9

CHAPTER VOLUME Chapter 8.0 - Economic and Social Effects of Station Construction and Operation 2 Cnapter 9.0 - Alternative Energy Sources and Sites 2 Chapter 10.0 - Station Design Alternatives 2 Chapter 11.0 - Summary of Cost-Benefit Analysis 2

(} Chapter 12.0 - Environmental Approvals and Consultation 2 Chapter 13.0 - References 2 Amendment 1 - Voluntary Revisions 2 1 Amendment 2 - NRC Review Questions and Responses 2 2 Amendment 3 - NRC Review Questions and Responses 2 3 l

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l Braidwood ER-OLS AMDIDMENT 3 O CHAPTER 5.0 - ENVIRONMENTAL EFFECTS OF SMTION OPERATION TABLE OF CONTENTS PAGE 5.1 EFFECTS OF OPERATION OF HEAT DISSIPATION SYSTEM 5.1-1 i 5.1.1 Effluent Limitations and Water Quality Standards '

5.1-1 5 .'1. 2 Physical Effects 5.1-6 5.1.3 Biological Effects 5.1- 7 5.1.3.1 Effects of Released Heat on the Fankakee River 5.1-7 I 5.1.3.2 Ef facts of Entrapment and Impingment

, of Juvenile and Adult Fish on the Kankakee River 5.1-9

! 5.1.3.3 Entrainment Effects on the Kankakee River 5.1-9 5.1. 3. 4 Effects of Reactor Shutdown on the Kankakee River 5.1-10 5.1.4 Effects of Heat Dissipation Facilities 5.1-10 1

5.2 RADIOLOGICAL IMPACT FROM ROUTINE OPERATION 5.2-1 5.2.1 -Exposure Pathways 5.2 5.2.1.1 Exposure Pathways to Biota Other Than Man 5. 2- 1 5.2.1.1.1 Terrestrial Pathways 5.2-1

5.2.1.1.2 Aquatic Pathways 5.2-1 5.2.1.2 Exposure Pathways to Man 5.2-2 l

l 5.2.1.2.1 Terrestrial Pathways S. 2- 2 5.2.1.2.2 Aquatic Pathways 5.2-3 5.2.2 Radioactivity in Environment 5. 2- 4 5.2.2.1 Surface Water Models 5.2-4 5.2.2.2 Groundwater Models 5.2-5 5.2.2.3 Gaseous Effluents 5.2-5 5.2.3 Dose Rate Estimates for Biota Other Than Man 5.2-5 5.2.3.1 Gaseous Effluents 5.2-5 5.2.3.2 Liquid Effluents 5. 2-6 j 3 5.2.3.3 Dose Effects on Biota 5.2-7 5.2.4 Dose Rate Estimates for Man 5.2-7 5.2.4.1 Liquid Pathways 5.2-7 l 5.2.4.2 Gaseous Pathways 5.2-8 5.2.4.3 Direct Radiation from Facility 5.2-8 5.2.4.4 Annual Population Doses 5. 2- 8 5.2.5 Summary of Annual Radiation Doses 5.2-9 5.2A EXAMPLES OF DOSE CAIEULATIONAL METBODs 5.2A-i 5.3 EFFECTS OF CHEMICAL AND BIOCIDE DISCHARGES 5.3-1 5.0-1

Braidwood ER-OLS AMENDEn'I 1 FEBRUARY 1983 TABLE OF CONTENTS (Oont'd) O PAGE 5.4 EFFECTS OF SANITARY WASTE DISCHARGES 5.4-1

5. 5 EFFECTS OF OPERATION AND MAINTENANCE OF THE TRANSMISSION SYSTEMS 5.5-1 5.5.1 Maintenance of Transmission Right-of-Way 5.5-1 5.5.2 Periodic Transmission Line Inspection Programs 5.5-1 5.5.3 Operational Aspects 5. 5- 1 5.6 OTHER EFFECTS 5.6-1 5.6.1 Introduction 5.6-1 5.6.2 Approach 5.6-1 5.6.3 Procedures 5. 6- 1 5.6.4 Noise Effects 5.6-2 5.6.4.1 Illinois Environmental Protection Agency 5.6-2 5.6.4.2 U.S. Enviromen'tal Protection Agency 5.6-3 5.6.4.3 Department of Housing and Urban 1 Development 5.6-3 5.6.4.4 Preoperational Ambient Levels 5.6-3 5.6.5 conclusion 5.6-3 lll l 5.7 RESOURCES COMMITTED 5.7-1 l

l 5.7.1 Resources Comitted During Plant Lifetime 5.7-1 5.7.2 Irretrievable Committments of Resources 5.7-2 5.8 DECOMMISSIONING AND DISMANTLING 5.8-1 e

I O

5.0-11

Braidwood ER-OLS AMENDMENT 3

( ); SEPTEMBER 1983 concentration estimates given in this table assume no dilution of ef fluents nor any radioactive decay. It is not likely, how-ever,-that any Of the fish, invertebrates, or aquatic plants studied will be present at the point of the blowdown long enough for the radionuclide equilibrium to be established, or that all animals that feed on these organisms will obtain their food entirely from the discharge. Thus, dose estimates calcu-lated using these assumptions are conservatively high.

5.2.2.2 Groundwater Models Since no radionuclides will be released into any groundwater supply, the use of groundwater models was not required.

5.2.2.3 Gaseous Ef fluents The atmospheric dispersion of gaseous radioactive ef fluents de-pends primarily on local meteorological ano topographical condi-tions. Three years of meteorological data from the Braidwood site were useo to calculate diffusion parameters (X/Q's) ano deposition rates (D/Q). These dispersion values were calculated using the methods and data of the Nuclear Regulatory Commis-sion's (NRC) Regulatory Guide 1.111 (1977a) (see Subsection

()

6.1.3.2.2). The resulting X/Q values and. relative depositing rates for several locations of interest are shown in Table 5.2-3. More complete tabulations of X/Q's are presented in Tables 2.3-43 ano 2.3-44. These data indicate that the maximum 3 ground-level concentrations of gaseous effluents at the site

. boundary are expected to occur in the west sector.

5.2.3 Dose Rate Estimates for Biota Other Than Man The calculation of radiation doses to biota from radionuclides 3 in liquia effluents was performed according to "Models and Computer Codes for Evaluating Environmental Radiation Doses" (Soldat et al. 1974).

5.2.3.1 Gaseous Effluents The maximum immersion dose to the skin of biota other than per-sons from gaseous effluents is assumed to be the same as the skin dose to persons, as shown in Table 5.2-2. These doses assume continuous residence of the organism at the site boundary and therefore are conservative estimates. The maximum thyroid inhalation dose was assumed to be similar to that received by an infant, as shown'in Table 5.2-4.

O o 5.2-5 l

Braidwood ER-OLS AMENDMENT 3 SEPTEMBER 1983 g

5.2.3.2 Liquid Effluents The release of liquid radioactive waste to the Kankakee River will result in both external ano internal exposure to fish, invertebrates, and aquatic plants. The submersion dose will ce caused by beta and gamma raciation. The a a raalation is more penetrating than beta radiation and contributes a whole-body dose, whereas the depth of beta particle penetration ano tne resulting dose to the organism is a function of the organ-ism's size. Larger organisms will receive a smaller overall Deta dose than smaller organisms, and, when very small organ-1sms are considered, the beta ano gamma doses may be combineo.

The gamma component of the cose is probably representative of the total dose for large fish and inverteorates. Tritium contributes substantially all of the Deta cose. The radiation dose receivea by fish, invertebrates, and aquatic plants suo-merged in water is directly proportional to the energy aosorbed in the water.

The dose to aquatic organisms from internally oeposited radio-nuclides depends on tne concentration ano distribution of the raolonuclides in the organism and on the effective beta and gamma energy per oisintegration for the raolonuclides in- g volved. In all cases, it is assumed that the radionuclides are w uniformly distributeo througnout the organism considered.

Bioaccumulation factors for fish,. crustaceans, mollusks, and aquatic plants are listed in Tacle 5.2-1. This factor, com-monly used to predict the accumulation of racionuclides in an aquatic organism, is defined as the ratio of tne concentration of a radionuclide in the organism to the concentration of the same radionuclide in the water where that organism resides.

The use of oloaccumulation factors eliminates the need for detailed considerations of aquatic foco chains. 'The radio-nuclides released to the river in the ef fluent will, however, enter the terrestrial food chain through a variety of path-ways, birds and mammals in the braidwood Station site vicinity may derive all or a portion of their daily diet from the river. Two species considered as representative of exposeo Diota are the raccoon and the duck. Since the previously de-fined concentration factor approach is not applicaule in this situation, the calculation of radionuclide concentrations in the area of the Braidwooo Station aischarge is Dased on diet.

Besides consioering specific diet, this methou takes into account the assumed body mass, the effective radius, values for the fraction of each radionuclide retained within tne booy of the organism, and the ciclogical half-life of the radio-nuclide. These assumptions are given in Taole 5.2-5. The g

5.2-6

Braidwood ER-OLS AMENDMENT 1

(~}

\_/ FEBRUARY 1983 AMENDMENT 3 SEPTEMBER 1983 estimated doses to biota other than humans are pre.ented in Table 5.2-6. Based on these assumptions, the computed cose rates are given for ducks consuming aquatic plants, and for raccoons ingesting fish, crustaceans, and mollusks. This ap-proach is conservative since it assumes that an animal obtains all of its food from organisms that are in equilibrium with the radionuclides in water at the maximum released concentrations.

Tritium contribues a substantial portion of the external and internal doses to biota, except through the sediment pathway.

The external submersion dose to small aquatic plants and ani-mals is substantially all due to the beta component of tritium.

5.2.3.3 Dose Effects on Biota Under field conditions, it cannot be shown that organisms are in any way affected by dose rates lower than 1000 millirads per day (Auerbach et al. 1971). For example, low dose rates seem to have no ef fect on such commonly useo end points as survivor-r- ship, fecundity, growth, development, or susceptibility to

(._T

/ infection. It should be noted that when considering the ef-fects of radiation on biota other than persons, populations are of more concern than individuals. Since the cose estimates

-presented in.this report are conservative, it is unlikely that any animal population in the Braidwood Station site vicinity will receive annual doses approaching the computed levels.

5.2.4 Dose Rate Estimates for Man The calculation of radiation doses to persons from radio-3 nuclices in liquid ef fluents was performed according to "Models and Computer Codes for Evaluating Environmental Radiation Doses" (Soldat et al. 1974). Examples of dose calculation models may be found in Appendix 5.2A.

5.2.4.1 Liquid Pathways Expected annual releases of radionuclides are given in Table 3.5-3. Activity concentrations in the discharge canal were calculated assuming an annual cooling pond blowdown flow of 43.2 cfs with 2 unit operation. Dilution of radionuclides in i the Kankakee River was not taken into account.

Estimated annual average doses to individuals exposed to radio-active liquid ef fluents from the braidwood Station were calcu-(N lated for pathways of fish consumption, drinking water, and

() recreational exposure.

4 5.2-7

Braidwood ER-OLS AMENDMENT 1 FEBRUARY 1983 g

AMENDMENT 3 SEPTEMBER 1983 Recreational use of the Kankakee River in the vicinity of Braidwood Station is discussed in Subsection 2.1.2.3. The esti-mates of whole-cooy ooses and critical-organ doses made for swimming, boating, and shoreline activities are shown in Table 5.2-7.

An estimate of the expected dose rate to the whole body ano critical organs received from drinking water obtained from the discharge canal is shown in Table 5.2-7 even though the canal is not a drinking water source. Presently there is no public drinking water supply within 50 miles downstream from the Braidwooo Station. Kaiser Agricultural Chemicals has deacti- i vated its its water purification system and now uses ground-water for drinking water supply. As noted previously, the Kankakee River in the vicinity of the Braidwood Station sup-ports an active sport fishery. Estimates of doses receiveo to whole booy and critical organs from the consumption of fish are given in Table 5.2-7. Actual doses will be lower because of the conservative nature of the bicaccumulation factors ano because the probability of a fish staying in one location is extremely small. ggg 5.2.4.2 Gaseous Pathways Expected annual releases of radioactive noble gases and partic-ulates from the Braidwood Station are shown in Tables 3.5-4 and b 3.5-7. Estimated offsite doses to individuals from these ef-fluents are given in Tables 5.2-2 and 5.2-4. Doses were calcu-lated using the methodology of NRC Regulatory Guide 1.109 -

(19770).

Calculational models are discussed in Appendix 5.2A. Plume immersion, exposure to contaminated surfaces, inhalation, ano ingestion pathways were all consioereo. Consumption factors for the ingestion pathways are given in Table 5.2-8 (Fletcher and Dotson 1971; NRC 1977b). An 8-month grazing period was assumeo for milk animals, ano a 10-month grazing period was assumed for meat animals.

5.2.4.3 Direct Radiation from Facility The annual average external dose rates due to cirect radiation exposure were estimated assuming normal station operation.

Estimated dose rates in the vicinity of the station are given in Table 5.2-9. The sources considered were the nitrogen-16 in ,

the primary coolant and the radioactive contents of the storage j tanks holding refueling water, primary water, and secondary ggg 5.2-8 l

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Braidwooo ER-OLS E /]-

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AMENDMENT 3 SEPTEMBER 1983 water. All other major and potential contained sources are Delow graae level or surrounded oy protective snields and can be considered to contribute a negligible amount to the total 4 dose rate.

Standard techniques of geometric and material attenuation were usea in the calculations. Credit was taken for the concrete in the containment walls and the air between the source and dose point, but no credit was taken for partial occupancy or for local shielding provided by ou11 dings ano owellings (etc.) and by steel-tank walls ana liners.

The population exposure through this pathway, direct radiation

-from the station, was estimatea casea on the projected popula-tion within 50 miles of the Braidwood Station in the year 2000.

exposureThis calculation of 0.024 man-remyielaed

/ year a negligible for Braidwoodannual population Station Unit 1. ]3 5.2.~4.4 Annual Population Doses The population dose due to gaseous effluents to all indiviouals living within a 50-mile radius of the Braiawooo Station was calculatea using population cata projectea to the year 2000.

O. The estimated cose from gaseous effluents for the year 2000 population within a 50-mile radius of the site appears in Table 5.2-10. Tnis table shows whole-body, skin, and thyroid cases resulting from exposure from immersion, innalation, ana ground deposition.

i The population cose causen by direct radiation to all indivia-

- uals'living witnin a 50-mile radius of the braidwood Station was.also calculated using population cata projected for the I year-.2000; it is given in Table 5.2-10. l3 The population aose resulting from natural background radiation

( .to -all inaividuals living within a 50-mile radius of the l' Braidwood Station is given in Table 5.2-11. Tnis aose was i calculated assuming a aose to indiviauals of 135 mrem /yr and

[ . was based on population cata projected for the year 2000.

I 5.2.5 : Summary of Annual'Raolation Doses Tne estimatea radiation doses to the regional. population from

all station-relatea sources are summarized in Table 5.2-11.

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~3 -1 0 1k: 99n 2.30 x 10 1.19 x 10 1.5 x 10*I 5.0 x 10 5.0x10 4.0 x 10*I

~3 ks 103 1.40 x 10 7.25 x 10 1.0 x 10*I 3.0 x 10+2 3.0 x 10+2 2.0 x 10*3

~3 -l R4 106 2.40 x 10 1.24 x 10 1.0 x 10*I 3.0 x 10+2 10 x 10+2 2.0 x u.*3

-2 Ag 110m 4.40 x 10 2.28 x 10 2.3 x 18 7.7 x 10+2 7.7 x 10+2 2.0 x 10 Ta 127 1.40 x Id 7.25 x 10 4.0 x 10+2 7.5 x 10*1 7.3 4 E*I 10 x 10 i

"~

4.0 x Ig2 +2 Ta 129m 4.60 x 10~ 2.36 x id 7.5 x 10*I -7.5 x 10*I 1.0 x 10

-3 Ta 129 3.00 x 10 1.55 x 10 4.0 x 10+2 7.5 x 10' 7.5 x 10*I 1.0 x 10+2

~

• Ta 131m 130 x 10 1.71 x 10" 4.0 x 10' 7.5 x 10' 7.5 n 10 1.0 x 10+2 ,

-2 Te 132 6.20 x 10 121 x 10 4.0 x 10+2 7.5 x 10*I 7.5 x 10 1.0 x 10*

I D0 1.10 x 10 4

5.70 x 10

-3 1.5 x 10*I 5.0 x 10 0

5.0 x 10 0

4.0 x 10*I

-2 0 g,$ ,jg+1 0 I 131 8.00 x 10 4.14 x 10 5.0 x 10 5.0 x 10 4.0 x 10*

-2 0 0 I D2 1.80 x 10" 9.33 x 10 1.5 x 1/I 5.0 x 10 5.0 x 10 4.0 x 10*I

-2 0 I D3 170 x 10 1.92 x 10 1.5 x 10*I 5.0 x 10 5.0 x 10 4.0 x 10*I

~3 0 0 I 135 4.30 x 10 2.23 x 10'I 1.5 x 18 5.0 x 10 5.0 x 10 4.0 x 10*I Cs 04 2.80 x 10

-2 1.45 x 10 0

2.0 x 183 1.0 x 10*3 1.0 x 10+2 5.0 x 10+2 Cs 136 6.90 x 10~ 157 x 10'I 2.0 x 1/3 1.0 x Ig2 1.0 10+2 5.0 x 10+2

-2 g,gg , 3f +2 +2 O 07 150 x 10 2.0 m I I 1.0 x 10 1.0 a 10+2 3.0 x 10

~I Co 144 5.20 x 10'3 2.69 x 10 1.0 x 18 1.0 x 10*3 1.0 x 10*3 4.0 x 10*3 2.30 x 10 4 1.19 x 10- 1.0 x 1/I 4.0 x If2 4.0 x 10+2 10 x 10+2 ID 239 ay .ame bemed cm arunt cymratim mid 21.6 cfs svarage b1h par unit.

4 5.2-10

y_ , -, .

> i x , .

y y ll-  %.

.,f v i l'r. ,

, Y , \

V , j; y

' ;- {

.. - -.4 -

/  ; , TABIE 5.2-2 / "

r 1 ,

i. . c. ~ -

^

,,. [ / ,.

f=:w 1 fuerage Site Bowdary Doses i.

m - ->

, c.

s ' ' ' <' Phae Imacesian Grand Deposition Inhalation Downwind Distance Ieta-Air 4 Gamna-Air Skin.- E ole Body Skin E ole Body 'Ihyroid ,

, y Direction (meteis) . (nrad/yr) (nrad/yr) grem/yr) (nrem/yr) (arem/yr) (nrem/yr) (nren/yr)

,e

~ ~

N 610- 7 9.97 x 10~ 4.01 x 10 7.74 x 10~ 2.41 x'10~ 9.42 x 10~ 8.04 x 10 5.58 x 10-

-2 '

NE 914 5.84 x 10- 2.53 x 10 4.67 x 10~ 1.47 x 10" 5.41 x 10- 4.62 x 10- 3.21 x 10~

3.97,x 10' -2 NE 793 4.81 x 10~ 2.24 x 10~ _ 51.26 x 10 4.31 x 10~ 3.68 x 10~ 2.66 x 10- @

EE 701 5.78 x 10

-2 2.48 x 10~ 4.60 x 10~ 1.44 x 10

-2 3.88 x 10~ 3.31 x 10' 3.22 x 10

-2 $

-2 -2 -2 -2 -2 -2 E 1036 2.66 x 10 <1.35 x 10 2.28 x 10 7.23 x'10- 2.13 x 10 1.82 x 10 1.46 x 10

, h, ESE / 2713 1.01 x 10-2 f 4.33 x 10-3 8.01 x 10

-3 i 2.15 x 10

-3 7.74 x 10

-3 6.60 x 10

-3 5,46 x 10

-3

-3

-3 4.12 x 10 SE' 3414 7.59 x 10 3.34 x 10~ 6.10 x 10~ '.l.59 x 10~ 5.28x50~ 4.50 x 10 SN 3444 6.66 x 10- 2.92 x 10

-3 5.35 x 10

~3

'1.35 x 10 4.77 x 10

-3 4.07 x 10

-3 3.65 x 10

-3 3 5

-3 S6 4633 4.01 x 10~ 1.72 x 10~ 3.19 x 10

-3 7.67 x 10~ 2.17,x 10-3 1.85 x 10- 2.20 x 10 g,

-2 -2 f-[/ ' SSW 975 1.68 x 10 9.52 x 10~ 1.52 x 10 K.98 x 10 1.72 x 10- 1.47 x 10' 9.23 x 10-

' -2 -2 -2 J ' -3 -2 -2 -2 SW 625 3.29 x 10 1.72 x 10 2.86 x 10 9.36 x 10 2.90 x 10 2.47 x 10 1.85 x 10 2.17 x 10- 4.19 x 10~

~

f

1. WSi 533 7.43 x 10~ 3.08 x 10' 5.83 x 10~ 1.83 x 10- 2.54 x 10~

-2 -2

-1 -2 -2 -2 -2

, /W' 518 1.40 x 10 S.09 x 10 1.04 x 10 3.18 x 10 3.09 x 10 2.64 x 10 7.92 x 10

~

-2 -2

! W 503 1.28 x 10 ~4.58 x 10- 9.46 x 10~ 2.88 x 10~ 3.40 x 10~ 2.90 x 10 7.22 x 10

-2 -2 M4 495 9.16 x 10 3.66 x 10 7.09 x 10~ 2.20 x 10- 4'.48 x 10~ 3.82 x 10' 5.19 x 10' NNI 511' 7.93 x 10- 3.27 x 10~ 6.22 x 10~ 1.95'x 10~ 5.39 x 10- 4.59 x 10- 4.48 x 10~ 4 H

Note: Values based on 1 unit operation.

Breldwood ER-OLS AMENWENT 3 SEPTDBER 1983 TABLE 5 2~3 DISPERSION FACTORS (y/Q) AND DEPOSITION RATES FOR POINTS OF INTEREST LOCATION X/Q (sec/m )# D/Q(1/m )a

~7 Nearest Site Boundary 8.10x10 4.36x10 ~9 (0.30 mi NW)

~7 ~9 Nearest Residence 8.10x10 4.36x10 (0.30 mi NW)

~ -

Nearest Garden 8.10x10 4.36x10 '

(0.30 mi NW)

~

-10 3 Nearest Meat Animal 7.73x10 4.49x10 (1.70 mi NW) 3.70x10 -10

~

Nearest Milk Cow 7.79x10 (1.7 mi WSW)

Nearest Milk Goat . 3.43x10

-8 1.49x10 -10 (4.1 mi E)

O I

" Calculated using the methodology of (Nuclear Regulatory Commission) Regulatory Guide 1.111, Revision 1, July 1977 (NRC 1977a) .

O 5.2-12

O O O TABLE 5.2-4 BRAIDWOOD - EXPECTED INDIVIDUAL DOSES FROM CASEOUS EFFLUENTS .

DOSE RATE (mren/yr)

WHOLE LOCATION PATHWAY BODY SKIN THYROID BONE LIVER LUNC GI-LLI" I

Nearest Residence Plume 0.023 0.074 (0.3 mi NW)

Ground Deposition 0.039 0. 04 6  !

Inhalation Adult 0.035 0.054 0.004 0.035 0.037 0.035 Teen 0.036 0.059 0.005 0.036 0.038 0.036 Child 0.032 0.060 0.007 0.032 0.034 0.032 Infant 0.019 0.044 0.005 0.019 0.020 0.019 4

Nearest Garden Leafy Vegetables (0.3 mi NW) Adult 0.035 0.090 0.012 0.035 0.034 0.034 Teen 0.025 0.072 0.012 0.025 0.024 0.024 Child i 0.031 0.102 0.022 0.031 0.030 0.030 w

i Stored Vegetables R Adult 0.498 0.491 0.173 0.500 0.488 0.491 "'

P- Teen 0.622 0.619 0.298 0.634 0.614 0.616 i

7* Child 1.025 1.029 0.727 1.053 1.019 1.018 3 h 4 Nearest Meat Meat E Animal Adult 0.006 0.007 0.005 0.006 0.006 0.006 6 (1.7 mi NW) Teen 0.0 04 0.005 0 .0 04 0.0 04 0.004 0.004 Cl i

Child 0.005 0.006 0.008 0.005 0.005 0.005 l Nearest Milk Cow Milk (1.7 mi WSW) Adult 0.020 0.051 0.008 0.020 0.019 0.019 Teen 0.028 0.081 0.016 0.029 0.027 0.027 0.047 0.155 0.050 Child -

0.04 0 0.047 0.04 6 om

. Infant 0.075 0.339 0.077 0.082 0.075 0.075 Nearest Milk Coat Milk (4.1 mi E) , Adult 0.018 0.032 0.0 04 0.018 0.017 0.017 Teen 0.024 0.049 0.008 0.026 0.023 0.023 Child 0.039 0.091 0.020 0.043 0.039 0.038 Infant 0.061 0.188 0.038 0.068 0.061 0.060 -

hk'd (d

Note: Values based on 1 unit operation.

• Castro-Intestinal Tract, Lower Large Intestine.

Braidwood ER-OLS lh TABLE 5.2-5 ASSUMPTIONS USED TO CALCULATE RADIONUCLIDE CONCENTRATIONS AND DOSES TO BIOTA OTHEC THAN MAN BODY EFFECTIVE SPECIES MASS RADIUS DAILY DIET Duck 1 kg 10 cm 100 g algae Raccoon 12 kg 20 cm 600 g fish Raccoon 12 kg 20 cm 600 g crustacean Raccoon 12 kg 20 cm 600 g mollusk O

?

5.2-14

}

O 8 tele ooo sa-o's aae~o eur >

SEPTEMBER 1983 TABLE 5.2-6 i

Internal Dose to Biota Other Than Man

Primary Organisms Dose (mrad /yr)

Fish 4.36 x 101 Invertebrates 1.63 x 101 Aquatic Plants 4.80 x 101 Secondary Organisms Duck 3 (Aquatic Plant Diet) 1.92 x 102 Racoon

(' - (Fish Diet) 3.75 x 102 o

(Invertebrate Diet) 2.27 x 101 i .

Note: Values based on one unit operation. No credit for dilution in the Kankakee River.

i k

i i

m 5.2-15 1

m amn-- .ee-- w ----r ---v-v- ww- ,~,m-r -or ,,-ne,aw,y --,,-m ,,4.-g ,,eng -7,y~-,+ .,g -,w,-,--, n--,,,-r-m - -

p-m-,--y, < - p -w- g , y w y--- -,,ms

TABLE 5.2-7 PATHWAY DOSES FROM LIQUID EFFLUENTS BODY SKIN THYROID BONE GI-TRACT" PATHWAY (mrem /yr) (mrem /yr) (mrem /yr) (mrem /yr) (mrem /yr)

Consumption of Fish 6.09x10 -1 ~1 -1 -2 1.38x10 4.67x10 9.97x10

-2 ~

-2 -2 -2 Shoreline Activities 1.05x10 1,23x10 1,05x10 1.05x10 1.05x10 5

~4 ~

-4 ~4 Swimming and Boating 3.42x10 4.53x10 3.42x10 3.42x10~4 3.42x10 Drinking Water b 9.88x10~1 -

4.69x10+0 9.44x10

-2 9.22x10

~1 Appendix I y 10 CFR 50 g y y y y &

Design Objectives 3.0x10 1.0x10 1.0x10 1,0x10 'l.0x10 S 1

Y' u

g Note: All activities are' assumed to take place in the discharge canale No credit y is taken for dilution of effluents in the Kankakee River. Values based on 1-unit operation and.an average blowdown of 21.6 cfs per unit. ,

" Gastro-Intestinal Tract.

b The nearest municipal water intake is 115 miles downstream at Peoria, Illinois, on the Illinois River. Diluting the total radwaste discharge flow (43.2 cfs) in the annual. 3 average Illinois River flow (10,680 cfs) produces a dose reduction factor of 247. The {[*

u expected thyroid dose at this location becomes 0.019 mrem /yr per unit.

O O O

• Braidwood ER-OLS AMEEDENT 3 SEPTliHBER 1983 TABLE 4.2-10 -

ESTIMATED DOSES TO THE POPULATION WITHIN 50 MILES OF THE STATION SITE FROM RELEASES OF GASEOUS EFFLUENTS PATHWAY POPULATION DOSE (man-rem /yr)

WHOLE BODY SKIN THYROID Immersion 0.181 1.154 -

Inhalation 0.570 -

0.914 3

j Ground Deposition 0.224 0.263 -

Direct Radiation 0.084 - -

O 4

l

(~~

(

Note: Values based on 1-unit operation for est. mated 3 population in the year 2000.

5.2-19 l .. . . _ _ - . , - . _ . .- . - - - - . . - . . ~ . . - - - - - - - .--- --

BRAIDWOOD ER-OLS AME2 DENT 3 SEPTENBZR 1983 TABLE 5'.2-11 $

ESTIMATES OF THE ANNUAL WHOLE-BODY RADIATION DOSE TO THE POPULATION WITHIN 50 MILES OF THE BRAIDWOOD STATION ANNUAL DOSE" DOSE RECIPIENT (man-rem /yr) NOTES I

Onsite Workers 9.0 x 10 Table 4.4-1 General Population

~

Direct Radiation 8.4 x 10

~1 Plume Immersion 1.8 x 10

~1 Ground Deposition 2.2 x 10

~1 Inhalation 5.7 x 10

~1 Vegetable Consumption 4.6 x 10 Table 2.1-21

~1 Milk Consumption 3.8 x 10 Table 2.1-20

~1 Meat Consumption 3.4 x 10 Tables 2.1-17, 3 llh 2.1-18, and 2.1-19 0

Drinki.4g Water 0.0 x 10 No Water Taken from Kankakee River 1 b Fish Consumption 1.2 x 10 1.2 kg/yr per capita

-3 b Swimming and Boating

• 6.7 x 10 35 hr/yr per capita

~1 b Shoreline Activities 2.1 x 10 15 hr/yr per capita TOTAL Dose to General 1.0 x 10 Total Population Population from 4,826,000 (Year 2000)

Braidwood Station TOTAL Dose to General 6.5 x 10 Total Population Population from Natural 4,826,000 (Year 2000)

Background Radiation (135 mrem /yr/ person) ,

a Values based on 1-unit operation.

b' Based on HERMES data (Fletcher and Dotson 1971) ; effluents are assumed to be completely mixed in the river. lll 5.2-20

Braidwood ER-OLS A N. 1 FEBRUARY 1983 AMENDMENT 3 I,) SEPTENBER 1983 D 5.6 OTHER EFFECTS 5.6.1 Introduction This section describes the actual and predicted noise ef fects j of the Braidwood Nuclear Generating Statinn - Units 1 & 2 (Braidwood Station) during plant operation. All other effects of operation are discussed in other sections of Chapter 5.

5.6.2 Approach Noise due to the operation of Braidwood Station was predicted at four locations identified in Figure 5.6-1 as Points 1 through 4. Points 1, 2, and 3 were selected because plant i operation noise will be relative maximums for offsite residen-tial areas. Point 4 was selected to assess maximum offsite l3 noise due to the operation of the screen house. Actual noise measurements were taken at Point 4 in 1981 shortly after the i screen house had become operational.

The noise sources (equipment) considereo in predicting continu-aus plant operation noise were the main power transformers, system auxiliary transformers, unit auxiliary transformers, screen-house transformers, auxiliary building ventilation sup-ply and exhuast fans, and screen-house ventilation supply

(')

fans. Experience shows that these are the major sources of continuous exterior noise for this type of station. Intermit-tent noise due to the operation of unsilenced main-steam power-operated relief valves was also predicted.

5.6.3 Procedures Maximum expected noise level data for the major exterior sources identified in Subsection 5.6.2 were established based on published prediction schemes and manufacturers' informa-tion. Noise data for transformers was obtained from the manu-facturer and from the National Electrical Mar.ufacturers Assoc 1-ation's Standards for Transformers, TRl-1972, Section 0.06 (1972). Ventilation-f an noise level predictions were caseo on a prediction technique by J. B. Graham (1975), ano used fan operation parameters obtained from station design require-ments. Power-operated relief valve noise was preoicted using a technique developed by Riley-Beaird (no date).

The noise levels for each source were extrapolated to the vari-ous prediction points, using standaro prediction techniques that account for wave divergence and excess attenuation due to atmospheric absorption, directivity, shielding, and ground effects. The following values were used to account for attenu- 9 ation due to atmospheric absorption:

v 5.6-1

O Braidwood ER-OLS AMENDMENT 1 FEBRUARY 1983 Octave Band Center Attenuation Frequency (Hz) (dB/1000 ft) 63 0 125 0 500 0.7 1000 1.4

- 2000 3.0 4000 7.7 8000 14.4 These values are based on " Standard Day" conditions (i.e.; 590F, 70% H.H., negligible wind velocity) and were taken from Society of Automotive Engineers, 1975, " Standard Values of Atmospheric Absorp-tion as a Function of Temperature and Humidity," ARP 866A.

Credit was taken for the directivity of the supply and exhuast fans based on information supplied by Koppers Company, Inc. (1963),

" Directivity Index," Orawing D-98033. Credit for directivity of 1 the mechanical draft cooling towers was not taken separately since sound level predictions were based on the vendor's proposal data, which include the ef fects of directivity.

g Shielding or barrier attenuation was accounted for where Epplicable

~

and was based on the work of Z. Maekawa (1968), " Noise Reduction by Screens," Applied Acoustics, Vol. 1, pp. 157-173.

Because of the variability of ground conditions from season to season, attenuation due to ground effects was considered neglib-ible, and therefore, was not taken into ef fect in estimating excess noise attenuation.

The resulting octave-band sound pressure levels from each continu-ous source were then combined to give the resultant overall plant operation noise level at each location. Table 5.6-1 summarizes the predicted levels. Table 5.6-2 Summarizes the predicted A-weighted noise levels at each prediction point resulting from relief valve operation.

Actual field measurements at Point 4 were taken in 1981. The noise levels during normal screen house operation can be found in Table 5.6-1.

5.6.4 NOISE EFFECTS 5.6.4.1 Illinois Environmental Protection Agency To assess the possible ef fects of noise due to normal continuous h operation of the Braidwood Station, the predicted levels were 5.6-2 l

() Braidwood ER-OLS AMENDMENT 1 FEBRUARY 1983 AMENDMENT 3 SEPTEMBER 1983 compared to applicable state of Illinois noise pollution con-trol regulations. Since the predicted points are located near existing residences, station noise at these points is regulated by Rule 203 (Sound Emitted to Class-A Land During Nighttime Hours.) The comparisons of predicted levels with Rule 203, as shown in Figures 5.6-2 thrcugh 5.6-5, indicated that the calcu-lated station operation noise levels at all prediction points meet the Illinois regulations.

~

5.6.4.2 U.S. Environmental Protection Agency A second method used to assess the possible ef fects of normal operation of Braidwood Station was to determine how the pre-dicted plant operation noise levels compared with the levels of environmental noise identified by the U.S. Environmental Pro-tection Agency (U.S. EPA) as requisite to protect public health with an adequate margin of safety.

This comparison, summarized in Table 5.6-3, shows that the

<s predicted level at each point meets the requisite level,

(,) . dL n di35 dB, applicable to outdoor levels in residential areas. )3 5.6.4.3 DEPARTMENT OF HOUSING AND URBAN DEVELOPMENT A comparison of predicted noise due to normal plant operation with the Department of Housing and Urbas Development (HUD) critiera described in Subsection 2.7.3.3 (Ldn 26 65 dBA) is 13 shown in Table 5.6-4. This comparison shows that predicted p levels at all locations meet the HUD criteria.

5.6.4.4 Preoperational Ambient Levels To permit comparison of predicted plant operation noise with preoperational abmient noise at the plant site, levels measured at points A, B, and C (see Subsection 5.6.2) are shown in Tables 5.6-3 and 5.6-4. These tables indicate that although levels at points near the Braidwood Station property line will be increased due to station operation, the predicted levels are below all applicable regulations and guidelines. Ambient noise levels measured in the nearest communities (see Subsec-tion 2.7.1), however, are not expected to be signficantly affecteo by plant operation.

5.6.5 Conclusion r~

k The predicted station operation noise levels at property line points near existing residences meet state of Illinois 5.6-3

_. - .= - - ---- -

O V Braidwood ER-OLS AMENDMENT 1 FEBRUARY 1983 AMENDMENT 3 SEPTEMCER 1983 regulations and feceral guidelines for noise emitted to resi-dential receivers. The actual. station operation noise levels are' expected to be. lower than those presented in this Environ -

mental Report because all predictions were based on the maximum expected equipment noise. The noise impact due to normal oper-ation of the Braidwood Station is therefore expected to be small.

s l

O S

I f

i 5.6-3a g v.-e ,, - . -y .

,*c., r,..-- . . ,.~,.r ---,r- .---...e---,--,--. v.-- e, - - , - , . ,- , , .-w ,me-- - ,-- ,w.,r---.,%%--- -w .- ..e--,- -,,.. - -

O Braidwood ER-OLS AMENDHENT 1 FEBRUARY 1983 TABLE 5.6-1 PREDICTED NOISE LEVELS DUE TO NORMAL CONTIN 0US OPERATION OCTAVE BAND CENTER PREQUENCIES (Hz)

LOCATION dBA 63 125 250 500 1K 2K 4K 8K l' 36 43 48 40 31 20 6 -- --

2 49 51 59 53 47 38 25 13 --

3 49 57 62 53 44 31 15 -- --

4* 44 47 44 41 43 39 36 25 17 1 O

• NOTE: Noise levels for location 4 are actual nighttime measure-ments taken in 1981 in accordance with E: ate of Illinois $

Noise Regulations, Chapter 8, Part 2, Rule 203.

t O

5.6-4 L .

l 4

i O Braidwood ER-OLS 4

I i

TABLE 5.6-2 i

PREDICTED NOISE LEVELS DUE TO RELIEF VALVE OPERATION t LOCATION SOUND LEVEL (dBa)

, 1 94 2 96 3 91 1

4 48 t

h i

b i

O t

1 I

f i

l i

E-l i

?

l t

i t

I

~5.6-5 l

~

1 1

Braidwood ER-OLS AMENDMENT 1 FEBRUARY 1983 AMENDMENT 3 lll SEPTEMBER 1983 TABLE 5.6-3 COMPARISON OF PREDICTED AND MEASURED CONTINUOUS NOISE LEVELS WITH U.S. EPA GUIDELINES NOISE DUE TO AMBIENT NOISE PLANT OPERATION U.S. EPA LOCATION (Measured Level) _( Predicted _ Level) GUIDELINE 1 Lnd a = 43.5 Ld n = 42 Ld n JL 55 2 Ld n = 52.1 Ln=55 d Lon jL 55 3 3 Ld n = 42.1 Ld n = 55 Ld n JL 55 Ld n = 51.4* Lon i 55 i 4 Ld n = 44.2 e

• NOTE: The measured level at location 4 is an actual field measurement taken in 1981 with the river screen house 1 in normal operation, i.e. two of the three circulating water make up pumps operating.

Source: U.S. Environmental Protection Agency (U.S. EPA 1974),

aThe Ld n or day-night sound level represents the Leq with a 10 db nighttime penalty (see Subsection 2.7.2).

5.6-6

Braidwood ER-OLS AMENDMENT 1

() FEBRUARY 1983 AMENDMENT 3 SEPTEMBER 1983 TABLE 5.6-4 COMPARISON OF PREDICTED AND MEASURED CONTINOUS NOISE LEVELS WITH HUD GUIDELINES NOISE DUE TO AMBIENT NOISE PLANT OPERATION HUD LOCATION (Measured Level Ldn) (Predicted Level') GUIDELINE 1 43.1 Ld n = 42 Ld n S 65 2 52.1 Ld n = 55 Ld n.i 65 I 8 l

3 42.1' Ldn = 55 Ld n i 65 4 44.2 Ld n = 51.4* Lan 6 65 l

O

(

• NOTE: The measured level at Location 4 is an. actual field measurement taken in 1981 with the river screen house f in normal operation, i.e. , two of the three circulating water make up pumps operating.

Source: Department of Hous1"g and Urban Development (HUD 1979). f

) 5.6-7

Braidwood ER-OLS AMENDMENT 1

/~T FEBRUARY 1983 k- AMENDMENT 3 SEPTEMBER 1983 8.1 VALUE OF DELIVERED PRODUCTS Because the generating capacity of the Braidwood Station will

.be made available throughout the entire Commonwealtn Edison Company (CECO) power grid, no attempt has been made to confine the use characteristics within an imaginary radius of the site. The station's electrical output has been estimated for 4

the composition of the entire CECO service territory.

Estimates of the total generating costs for the first year of commercial operation for each unit are $591 million (100 mills 3 per kilowatthour) for Unit 1 and $455 million (77 mills per kilowatthour) for Unit 2 (see Tables 8.1-1 and 8.1-2).

At a lifetime average capacity factor of 65%, the plant will produce 12.75 billion kilowatthours of electricity annually with associated annual revenues of $886 million under the 1 3 present rate schedules (see Tables 8.1-3 and 8.1-4), assuming that revenue contributions for classes of service for the year ending December 30, 1982, remain constant through the life of l3 the plant. The estimated values of various benefits from the

() Braidwood Station project are listed on Table 8.1-5. Dollar values listed in this table represent revenues for a 30-year period and indirect benefits for a 30-year period present

- valued to January 1, -1984 at an ef fective interest rate of 3 11.8% per year.

I I

) 8.1-1

Braiowood ER-OLS AMENDMENT 1 FEBRUARY 1983 g

AMENDMENT 3 SEPTEMBER 1983 TABLE 8.1-1 ESTIMATED TOTAL GENERATING COST FOR BRAIDWOOD STATION UNIT 1 FOR FIRST 12 MONTHS OF COMMERCIAL OPERATION Dollarsa Mills Per Cost Component (thousanos) Kilowatthoura Fuel  ! 61,869 10.51 Operating & Maintenance 38,146 6.48 1

Carrying Charges 474,411 80.59 Other 17,071 2.90 3 Total Generating Cost $591,497 100.48 lll Note: Values are based on commercial operation starting October, 1985.

aCosts are in 1986 collars and are based on 60% cupacity factor (generating 5,886,720 MWH per year).

8.1-2 O

Braidwood ER-OLS AMENDMENT 1

~O. FEBRUARY 1983 AMENDMENT 3 SEPTEMBER 1983 TABLE 8.1-2

ESTIMATED TOTAL GENERATING COST FOR BRAIDWOOD STATION UNIT 2 FOR FIRST 12 MONTHS OF COMMERCIAL OPERATION Dollarsa Mills Per Cost Component (thousands) Kilowatthoura Fuel $ 65,872 11.19 Operating & Maintenance 40,677 6.91 Carrying Charges 335,779 57.04 2.21 3 Other 13,0J0 Total Generating Cost $455,338 77.35 i

i L

Note: Values are based on commercial operation starting October, 1986, aCosts are in 1987 collars and are based on 60% capacity factor (generating 5,886,720 MWH per year). l3 P

- 8.1-3

)

. . . - - - , . . . . . _ . . _ , . . . - . , , .. . ___ . ~ , , _ , - - - _ , , , . _ . . - - . . . . . . _ _ _ . - . . . . _ , . _ _ - - _ _ ,

TABLE 8.1-3 COMMONWEALTH EDISON COMPANY REVENUE AND ENERGY SOLD BY CLASS OF SERVICE FOR 12 MONTHS ENDED DECEMBER 31, 1982 W

,m Revenue Energy Sold Amount Percentage Revenue Per KWH

[

7

-er Class ($ in 000's) (MWH) of Total (g)

Y Residentia1 1,376,945 17,180,965 29.46 8.01 o G

Small Commercial & Industrial 1,423,379 18,822,428 32.27 7.56 Large Commercial & Industrial 920,227 16,564,184 28.40 5.56 Other 331,079 5,753,939 9.87 5.75 Total 4,053,630 58,321,516 100.00 lill v

O O O

O O O TABLE 8.1-4 ESTIMATED ANNUAL AMOUNT OF ENERGY AND REVENUE ATTRIBUTABLE TO THE BRAIDWOOD STATION BY CLASS OF CUSTOMER Class of Customer Total Estimated Revenue y Percentage of Energy Used Per KWH Total Value g Type Total Energy Used (MWH) (g) (Dollars) a co b

g Residentia1 29.46 3,757,493 8.01 300,975,189 E E E Small Commercial.& Industrial 32.27 4,115,897 7.56 311,161,813 e 1 3 g Large Commercial & Industrial 28.40 3,622,295 5.56 201,399,602 Other 9.87 1,258,875 5.75 72,385,313 Total 100.00 12,754,560 885,921,917 l

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• Braidwood ER-OLS AMENDMENT 1 FEBRUARY 1983 llh AMENDMENT 3 SEPTEMBER 1983 TABLE 8.1-5 BENEFITS FROM THE BRAIDWOOD STATION QUANTITATIVE DIRECT BENEFITS VALUE Expected Average Annual Generation in KWH (billions) 12.75 Capacity in KW (millions) 2.24 Proportional Distribution of Electrical Energy Expected Annual Delivery (KWH) (billions)

Residential 3.76 Small Commercial and Industrial 4.12 Large Commercial and Inoustrial 3.62 1 O

Other 1.26 Revenues from Deliverso Benefits Electrical Energy Generated (millions of dollars)a 5,633.8 3 INDIRECT BENEFITS Taxes (local, state, federal)

(millions of collars)a 1,524.3 aThese collars are for a 30-year period present valueo to January 1, 1984 at an ef fective interest rate of 11.8%.

8.1-6

Braidwood ER-OLS AMENDMENT 2

(~N s-) JULY 1983 AMENDMENT 3 SEPTEMBER 1983 Section 2.5 Buschbach, T. C., 1977, Coordinator of Nuclear Facilities Siting Studies, Illinois State Geological Survey, Letter of March 8 to A. Funk, Staff Geologist, Sargent & Lundy.

May, A. D., 1983, U.S. Soil Conservation Service, Will County Office, Letter of June 9 ano Encloseo Reed and Custer Township 2

• Soil Maps to B. B. Barickman, CECO, Environmental Affairs.

U.S. Soil Conservation Service, August 8, 1983 Soil Information and Soil Survey Interpretation Sheets for Maumee, Pittwood ano Canisteo Soils. Provided Dy Will County, Illinois, Soil 3 Conservation Service Office.

wascher, H. L., P. T. Veale, and R. T. Odell, 1962, Will County Soils, Soil Report 80, University of Illinois Agricultural Experiment Station, UrDana, Illinois.

Willman, H. B., and J. C. Frye, 1970, Pleistocene Stratigraphy of Illinois, Bulletin 94, Illinois State Geological Survey,

{~S Uruana, Illinois.

r~w kJ 13.0-21

Croidwood ER-OLS Section 2.6 References cited g

Federal Register, 1975, National Registry g Natural Landmarks, May 5 edition, Washington, D.C.

Federal Register, 1977a, National Register g Historic Places, February 1 edition, Washington, D.C.

Federal Register, 1977b, National Register g Ei_storic Places, May 10 edition, Washington, D.C.

Ison, M., 1977, Library of Congress, Telephone Conversion of July 11 with M.P. Tenner, Environmental Aff airs, Cosumonwealth Edison' Company, Listing sites on the Historic American Buildings Survey and on the Pictorial Archives of Early American Architectur e.

Resseguie, P., 1977, National Park Service, Letter of June 2 to M.P. Tenner, Environmental Af fairs, Commonwealth Edison Company, Containing the January 1977 update of the National Registry o_f, Natural Landmarks.

Richardson, E.S. , Jr. ,1974, curator of Fossil Invertebrates, Z'ield Museum of Natural History, Testimony at AEC (NRC)

Environmental Hearings, Joliet, Illinois.

S t. . Lawrence-Taylor, C., 1977, National Park Service, Telephone conversation of July 11 with M.P. Tenner, Environmental Aff airs, g

Commonwealth Edison Company, Listing sites on the Historic American Buildings ' Survey.

Section 2.6 References Not Cited

Brevet's Illinois Historical Markers and Sites,1976 Brevet i

Press, Inc. , Sioux Falls.

I commonwealth Edison Company, 1976, LaSalle County Station Environmental Report - Operating License Stage, Vol. I, Sec. 2. 6, NRC Docket Nos. 50-373 and 50-374.

Illinois Historic Landmarks Survey,1974a, Inventory g Historic Landmarks in Grundy County-Interim Report, Illinois Department of ConservatIoi5.

, 1974b, Invatory g Historic Landmarks M Kankakee County-Interim Report, Illinois Department of Conservation.

l , 1974c, Invents of Historic Landmarks h Will County-Interim Report, Illinois Department of Conservation.

1 Illinois Historic Structures Survey,1972a, Inventory g Historic Structures in Grundy County-Interim Report, Illinois Department of Conservadon. h 13.0-22 i

/ Braidwood ER-OLS AMENDMENT 2

\

JULY 1983 l AMENDMENT 3 l SEPTEMBER 1983 QUESTION E291.10 Provide a scaled diagram showing location and plan elevation of the circulating water discharge structure. Provide the same for the essential service water discharge structure.

RESPONSE

Scaled diagrams showing the location, plan and elevation of the circulating water and essential service water discharge struc-tures were provided at the site visit.

Sloplified figures depicting the requested information have been included in Section 3.4, Heat Dissipation System, as; Figure 3.4-6, Circulating Water Discharge Structure; Figure 3 3.4-7, Essential Cooling Pond and Figure 3.4-8, Outdoor Essential Service Water Discharge Structure.

QE291.10-1

Braidwood ER-OLS AMENDMENT 2

() JULY 1983 AMENDMENT 3 SEPTEMBER 1983 QUESTION E310.1 Are there any substantial changes in the station external ap-pearance or layout which have been made subsequent to the description in Section 3.17 If so please describe.

RESPONSE

The station building has been enlarged to accommodate the Tech-nical Support Center. The Security Building has been enlarged and the parking lot has been expanoed. The river screenhouse design was modified to present a lower profile by elimination i of the overhead crane penthouse ano the trash rack cleaning machinery has been screeneo from view from the river and the opposite shore. In addition, the screenhouse area was also extensively landscapea to minimize the aesthetic effects.

Figure 2.1-4 has been amended to depict changes in station layout. .)

( QE310.1-1

Braidwood ER-OLS AMENDMENT 2 O JULY 1983 AMENDMENT 3 SEPTEMBER 1983 QUESTION E310.8 Section 2.6.2 reports that "the archeological investigations have not yet been completed" along the Braidwood-Crete trans-mission line. What is the present status of the archeological survey and when may the NRC expect to receive a report on that survey? Also, if there exists any correspondence with the State flistoric Preservation Officer on the survey along the transmission line, please provide copies to the NRC.

RESPONSE

The archeological investigations have been completed. The field work on the Braidwood to Davis Creek Substation portion of the transmission line and on the Davis Creek Substation site was done in 1978 and 1979 prior to construction of the trans-mission line and the substation. Field work on the Davis Creek to Crete portion of the transmission line began in 1979 and continued in 1980. The resurvey testing of four known prehis-toric sites and the field work on parcels of right-of-way where 0- access had been disputed and where facilities would be located was completed in March, 1983. Two reports covering all the phases of the investigation have been prepared. The first report was completeo in 1981 and covered the 1978, 1979 and 1980 field work. The second report, completed in 1983, covers the final field work done in 1983. Both reports have been submitted to the State Historic Preservation Officer for review and approval.

Copies of the reports and a copy of the letter containing the 3 State Historic Preservation Officer's concurrence that the evaluation and preservation of archeological resources have been acequately aodressed have been sent to the NRC staff.

QE310.8-1

Braidwood ER-OLS AMENDMENT 3 O' SEPTEMBER 1983 This section contains the NRC request for additional informa-tion Dased on B. J. Youngblood's letter of July 22, 1983, fol-

' lowed by the response to the question. In some cases the res-ponse includes a reference to tne appropriate upoated sections of the text.

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s6raidwdod ER-OLS AMENDMENT 3

(,)

-. ', ., . SEPTEMBER 1983

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QUESTION E240.1 ;J\

-m Definition (from Executive Order 11968 Floodplain Management)

~' ~

- Floodplain: The'lowlano and.relatively flat areas adjoining s inland and coastal ' waters inc'luding floodprone areas of of f-

'A shore islands, including at a minimum that area subject to a '

one percent or greater chance of flooding in any given year.

i 1. Provide descriptions of the floodplains of all water podies, including intermittent water courses, within or

~, s' adjacent to the site. On s a suitable scale map provide delineations of those arhys that will be flooded during theibni%1ertent chance flood in the absence of plant e f fecta 31.q. , preconstruction floodplain) .

)i s .

s' ,s

2. Provide; details of the methods used to determine the f.loodplains in response to il.' above. Include your assump-tions of and bases for the ' pertinent parameters used in the computation of the one7 percent flood flow'ano water elevation. If studies approved by Flood Insurance Admin-istration (FIA), Housing and UIoan Development (HUD) or the Corps of Engineers are available for'sthe site or ad-joining area, the details of ana4yses-need not be sup-You can instead provide the reports from which you

(__)s plied.

00tained the floodplain information. 1

\ .

,3 .1 Identify, locate on a map, and describe all structures and i topographic alterations in the floodplains.

, ' @ . (' Discuss the hydrologic effects of all items identified in

\' s'

3. above. Discuss the potential for altered flood flows x and levels, both upstream and downstream. Include the 1 -s '

potential ef fect of debris accumulating on the plant y structures. Additionally, discuss the ef fects of debris

^

generated from the site on oownstream facilities.

'LS. Provide the de' tails of your analysis used in response to

~

4. above. The level of detail is similar to that identi-fied in item 2. above.

RESPONSE

The Braidwood Station is located about four miles southwest of the Kankakee River. Tne Mazon River flows northwest of the site to the Illinois River. A detailed description of the Kankakee and Mazon River drainage basins and their tributaries near the site are given in Section 2.4.1 of braidwood ER-OLS.

m

~

QE240.1-1

Braidwood ER-OLS AMENDMENT 3 SEPTEMBER 1983 llh The flood hazard areas due to one percent chance flood in the Kankakee and Mazoa Rivers and their tributaries in the vicinity of braidwood plant site are shown in Figure QE240.1-1. This flood hazard area was delineated by the Federal Emergency Management Agency, Department of Housing and Urban Development, 1978 and 1982. Figure QE240.1-1 shows the Braidwood Station preconstruction flood hazard areas.

The plant area, the cooling pond, the river screenhouse and blowdown structures, which are located in or near the flood plains of the Kankakee and Mazon Rivers, are also shown in Figure QE240.1-1. It can De seen from Figure QE240.1-1 that the plant and cooling pond areas do not alter the flood plain of the adjacent rivers or their tributaries sc as to affect their flood prone areas.

The river screenhouse and blowdown structure are located on the Kankakee River approximately four miles upstream of the dam at Wilmington, Illinois. The river screenhouse and blowdown structure encroach onto the Kankakee River flood plain. The encroachment of the river screenhouse is shown in Figure QE240.1-2. The 100-year discharge in the Kankakee River near the river screenhouse is about 50,000 cfs. and the correspond-ing flood level in the Kankakee River at the screenhouse for pre-station construction is 547.5 feet MSL. (Flood Insurance lll Study, Ksnkakee County and Will County, Illinois, U.S. Depart-ment of Housing and Urban Development, Federal Insurance Administration 1979).

Figure QE240.1-2 shows the river cross-section at the screen-house with and without the screenhouse. At elevation 547.5 feet, the cross-sectional area under natural conditions is 7,900 square feet, and the area of cross-section with the screenhouse in place is 7,000 square feet. Thus, the river screenhouse encroachment during a one percent chance flood in the Kankakee River is 11.4 percent of the river cross-section.

This reduction in area will not have any significiant effect on the water levels upstream or downstream of the screenhouse.

It is clear from the above discussion that braidwood Station, ano in particular the river screenhouse, ooes not alter either flood flows or flood levels, both upstream and downstream of the screenhouse.

No debris is or will be generated ano disposed of into the waterways from the site facilities.

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8309080154-04

Braidwood ER-OLS AMENDMENT 3

(), SEPTEMBER 1983 QUESTION E240.2 Provide estimates (calculated if data permits) of the effective porosity (specific yield) for the Kewanee and Maquoketa Groups.

These data are required for our liquid pathway evaluation of a core melt-release. Provide additional discussion in the ER relevant to the most likely pathway from the containment base-ment to the neares (in terms of groundwater travel time) sur-face water. Also provide professional judgments with regard to the highest and lowest formations that radionuclides would migrate to following a core melt release to groundwater.

RESPONSE

In accordance with the Commission's Statement of Interim Policy (45 Fed. Reg. 40101, June 13, 1980) CECO is not required to discuss or analyze the environmental risks associated with core-melt releases. Consequently, CECO has not performed a liquid pathway analysis and cannot specifically respond to those portions of the question which inquire into the most likely liquid pathway to the nearest surface water and the

(~) highest and lowest geological formations that would be involved

(_/ in radionuclide migration.

However, CECO is providing the following information, to facilitate the Staff's analysis of these matters:

Estimates of the total porosity for the Kewanee and MaQuoketa groups are given in FSAR Figure 2.5-71 titled " Elastic Proper-ties, Logs A-1 and A-2." Stratigraphic and geophysical logs for boring A-1 and A-2 are given in FSAR Figures 2.5-123 tnrough 2.5-126. Geologic cross sections relating the stratigraphy from borings A-1 and A-2 to the stratigraphy beneath the plant are given in FSAR Figures 2.5-23 and 2.5-26.

Estimates of effective porosity for the Kewanee and Maquokota groups basea-on geopnysical data for boring A-1 and A-2 have been made. The effective porosity for borings A-1 and A-2 is given in Tables QE240.2-1 and QE240.2-2, respectively.

(D

.L/ QE240.2-1

Bra 10 wood ER-OLS AMENDMENT 3 SEPTEMBER 1963 h A discussion of accidental release of radioactive effluents from tanks located in the Auxiliary Building is presented in FSAR Sections 2.4.12 and 2.4.13.3. These discussions con-clude that the ambient groundwater elevation (elevation 580 feet to grade) will always be higher than the base mat eleva-tion of the auxiliary building and hence, the raolosctive spill l would be contained and prevented from moving into the surround-ing groundwater environment. A similar conclusion is presented l

in the Draft SER dated July 1983.

l O

O QE240.2-2

AMENDMENT NO. 3 Braidwood ER-OLS SEPTEMBER 1983 TABLE QE240.2-1 EFFECTIVE POROSITY FOR BORING A-1

'_ (PRELIMINARY)

I_ ,

4 DEPTH POROSITY DEPTH POROSITY DEPTH POROSITY DEPTH POROSITY (PT) (%)a (PT) (t)a (PT) (t)a (PT) (%)a 50.0 72.0 94.0 116.0 50.5 72.5 94.5 116.5 51.0 73.0 95.0 117.0 51.5 73.5 95.5 117.5 52.0 74.0 96.0 118.0 52.5 74.5 96.5 118.5 53.0 75.0- 97.0 119.0 53.5 75.5 97.5 119.5 54.0 76.0 98.0 120.0 54.5 76.5 98.5 120.5 '

55.0 77.0 99.0 121.0 55.5 77.5 2.93 99.5 121.5 56.0 78.0 2.65 100.0 122.0 56.5 78.5 2.34 100.5 122.5 57.0 79.0 2.17 101.0 123.0 57.5 79.5 2.06 101.5 123.5 58.0 80.0 1.93 102.0 124.0 58.5 80.5 1.80 102.5 124.5

()'

s s- 59.0 81.0 1.39 103.0 125.0 59.5 81.5 1.01 103.5 125.5 60.0 82.0 .78 104.0 126.0 60.5 82.5 .59 104.5 126.5 61.0 83.0 .57 105.0 1.28 127.0

- 61.5 83.5 .65 105.5 2.98 127.5 '

62.0 84.0 .76 106.0 2.89 128.0 .35

. 62.5 84.5 .94 106.5 2.78 128.5 .84 63.0 85.0 1.55 107.0 2.74 129.0 .97 t

63.5 85.5 1.95 107.5 2.71 129.5 1.41 64.0 86.0 2.07 108.0 2.73 130.0 1.32 64.5 86.5 2.21 108.5 2.87 130.5 1.32 I 65.0 87.0 2.4-3 109.0 131.0 .60 65.5 87.5 2.65 109.5 131.5 .55 q 66.0 88.0 2.76 110.0 132.0 66.5 88.5 2.82 110.5 132.5 67.0 89.0 2.86 111.0 133.0 .

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67.5 89.5 2.87 111.5 133.5 68.0 90.0 2.90 112.0 134.0 68.5 90.5 2.91 112.5 134.5 69.0 91.0 2.92 113.0 135.0

-69.5 91.5 2.70 113.5 135.5 70.0 92.0 1.41 114.0 136.0 70.5 92.5 114.5 136.5 71.0 93.0 115.'O 137.0 71.5' 93.5 115.5 137.5

(}

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• aWhere there are no values for porosity, the calculated value was zero. l

-QE240.2-3

' AMENDMENT NO. 3

' Braidwood ER-OLS SEPTEMBER 1983 l

l TABLE QE240.2-1 (Cont'd)

DEPTH POROSITY DEPTH FOROSITY DEPTH POAOSITY DEPTH POROSITY (FT) (%)a (FT) (%)a (FT) (%)a (FT) (%)a 138.0 160.0 6.40 182.0 1.36 204.0 138.5 .41 160.5 5.97 182.5 2,08 204.5 139.0 1.68 161.0 5.87 183.0 1.94 205.0 139.5 1.65 161.5 5.27 183.5 1.67 205.5 140.0 2.45 162.0 5.21 184.0 1.17 206.0 140.5 2.45 162.5 5.23 184.5 206.5 141.0 1.87 163.0 5.42 185.0 207.0 141.5 1.79 163.5 5.35 185.5 207.5 142.0 .96 164.0 4.06 186.0 208.0 142.5 .35 164.5 3.09 186.5 .38 208.5 143.0 165.0 1.53 187.0 2.00 209.0

?.43.5 165.5 187.5 2.58 209.5 166.0 188.0 2.85 210.0 .19 144.0 144.h 166.5 188.5 2.97 210.5 .40 167.0 189.0 2.97 211.0 .39 145.0 167.5 189.5 1.51 211.5 .40 145.5

.16 168.0 190.0 .62 212.0 .33 146.0 146.5 .89 168.5 .190.5 212.5 .07 1.46 169.0 191.0 213.0, .01 147.0 147.5 1.53 169.5 191.5 213.5 148.0 148.5 1.07 1.01 170,0 170.5 192.0 192.5

.84 2.86 214.0 214.5 h

.82 171.0 .27 193.0 2.74 215.0 .17 149.0 1.13 171.5 1.15 193.5 2.48 215.5 .23 149.5 2.06 172.0 .95 194.0 2.21 216.0 .05 150.0 150.5 1.85 172.5 1.05 194.5 216.5 151.0 1.91 173.0 .19 195.0 217.0 151.5 2.08 173.5 .

195.5 217.5 152.0 2.78 174.0 196.0 218.0 152.5 3.21 174.5 -

196.5 218.5 153.0 3.75 175.0 197.0 1c18 219.0 153.5 4.43 175.5 197.5 .86 219.5 5.12 176.0 .59 198.0 220.0 154.0 154.5 5.44 176.5 1.36 198.5 220.5 5.75 177.0 1.82 199.0 221.0 155.0 155.5 5.75 177 .5 2.05 199.5 221.5 5.65 178.0 2.40 200.0 222.0 156.0 ^

156.5 5.55 178.5 2.88 200.5 222.5 5.97 179.0 2.99 201.0 223.0 157.0 6.24 179.5 2.99 201.5 223.5 157.5 6.24 180.0 2.64 202.0 224.0 156.0 158.5 6.51 180.5 2.52 202.5 224.5 6.45 181.0 1,51 203.0 225.0 159.0 159.5 6.72 181.5 .86 203.5 .13 225.5 aWhere there are no values for porosity, the calculated value was zero.

QE240.2-4

ANENDMENT NO. 3

[ Braidwood ER-OLS SEPTEMBER 1983

p)(m- TABLE QE240.2-1 (Cont'd)

DEPTH POROSITY DEPTH POROSITY DEPTH POROSITY DEPTH POROSITY

, (PT) (%)a (FT) (%)a (FT) (%)a (FT) (%)a 226.0 .31 248.0 270.0 11.25

! 226.5 .31 248.5

, 227.0 249.0 227.5 249.5 228.0 250.0 .

, 228.5 250.5 229.0 251.0

'l-229.5 251.5 3.00 230.0 252.0 6.19 230.5 252.5 7.84 231.0 253.0 8.51 231.5 253.5 8.99

! 232.0 254.0 9.11 *

! 232.5 254.5 8.64 233.0 255.0 7.98 233.5 255.5 7.83 234.0 256.0 7.14 234.5 256.5 6.45 .

235.0 257.0 5.76 -

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235.5 257.5 5.12 236.0 258.0 4.27 236.5 258.5 4.38 237.0 259.0 4.65 237.5 259.5 5.18 238.0 260.0 6.29 238.5 260.5 6.08 c239.0 261.0 6.24 239.5 261.5 -

6.24 240.0 262.0 6.40

• 240.5 262.5 7.09 ~

241.0 263.0 6.87

.241.5 .33 263.5 7.03 242.0 .72 264.0 7.29 242.5 1.09 264.5 7.93 243.0 1.54 265.0 8.20 ,

243.5 1.81- 265.5 8.04 244.0' 1.99 266.0 '7.21 -

244.5 2.44 266.5 7.83 245.0 2.26 267.0 7.72 245.5 1.81 267.5 7.98 246.0 1.44 268.0 8.76 246.5 1.25 268.5 9.02 247.0 .86 269.0 9.94 247.5 .14 269.5 10.47 I,

x, aWhere there are no values for porosity, the calculated value was zero.

QE240.2-5

.-,.--e

AMENDMENT NO. 3

~}

5 Braidwood ER-OLS SEPTEMBER 1983 TABLE QE240.2-2 1

EFFECTIVE POROSITY FOR BORING A-2 (PRELIMINARY)

DEPTH POROSITY DEPTH POROSITY DEPTH POROSITY DEPTH POROSITY (PT) (%)a (PT) (%)a -(FT) (%)a (PT) (t)a 60.0 81.0 .81 102.0 2.52 123.0 60.5 81.5 .75 302.5 2.49 123.5 .56 61.0 82.0 .75 103.0 2.50 124.0 2.21 61.5 82.5 .78 103.5 2.51 124.5 2.72 62.0 83.0 1.30 104.0 2.66 125.0 3.44 62.5 83.5 1.89 104.5 2.84 125.5 3.54 63.0 84.0 2.12 105.0 1.33 126.0 3.69 63.5 84.5 2.32 105.5 126.5 3.10 64.0 85.0 2.62 106.0 127.0 2.39 64.5 85.5 2.86 106.5 127.5 1.83 65.0 86.0 2.90 107.0 128.0 1.89 65.@ 86.5 2.78 107.5 128.5 1.95 66.0 87.0 2.73 108.0 129.0 2.14 66.5 87.5 2.64 108.5 129.5 1.14 67.0 88.0 2.59 109.0 130.0 .66 67.5 88.5 2.60 109,5 130.5 .77 68.0 89.0 2.79 110.0 131.0 1.08 68.5 89.5 1,29 110.5 131.5. 1.38 69.0 90.0 111.0 132.0 1.68 llh 69.5 90.5 111.5 132.5 1.87 70.0 91.0 112.0 133.0 2.16 70.5 91.5 112.5 133.5 2.62 71.0 92.0 113.0 134.0 3.24 71.5 92.5 113.5 134.5 2.71 72.0 93.0 114.0 135.0 2.25 72.5 93.5 1.12 114.5 135.5 1.76 73.0 94.0 2.60 115.0 136.0 1.07 73.5 94.5 2.97 115.5 136.5 .80 74.0 95.0 2.44

• 116.0 137.0 .35 74.5 95.5 2.92 116.5 137.5 75.0 96.0 2.88 117.0 138.0 75.5 1.87 96.5 2.89 117.5 138.5 .05 76.0 2.79 97.0 2.89 118.0 139.0 .41 76.5 2.52 97.5 2.90 118.5 139.5 .39 77.0 2.18 98.0 2.92 119.0 140.0 1.12 77.5 1.87 98.5 2.96 119.5 140.5 1.12 78.0 1.57 99.0 2.99 120.0 141.0 1.12 78.5 1.31 99.5 2.91 120.5 141.5 2.46 79.0 1.16 100.0 2.93 121.0 142.0 .47 79.5 1.07 100.5 2.86 121.5 142.5 80.0 .97 101.0 2.77 122.0 143.0 .40 80.5 .88 101.5 2.55 122.5 143.5 aWhere there are no values for porosity, the calculated value was zero.

QE240.2-6

! AMENDMENT NO. 3

'I Braidwood ER-OLS SEPTEMBER 1983

~

I 1

.O '

I- TABLE QE240.2-2 (Cont'd) t i DEPTH PGuSSITY DEPTH POROSITY DEPTH POROSITY DEPTH POROSITY

{ _ (PT) (%)a (PT) (%)a (PI) (%)a (PT) (%)a I 144.0. 166.0. 188.0 210.0

~i 144.5 166.5 188.5 210.5

. 145.0 167.0 189.0 211.0 .12 i 145.5 167.5 189.5 211.5

} 146.0 .50 168.0 190.0 212.0

' . 146.5 1.22 168.5 190.5 212.5

} 147.0 1.45 169.0 191.0 213.0

. ;~ 147.5 2.01 169.5 191.5 213.5 148.0 2.35 170.0 192.0 214.0 148.5 2.89 170.5 192.5 214.5 149.0 2.62 171.0 193.0 215.0 149.5 2.19 171.5 193.5 215.5 150.0 .95 172.0 194.0 216.0 -

, 150.$ .52 172.5 194.5 216.5 i 151.0 .35 173.0 195.0 217.0 151.5 .71 173.5 195.5 217.5 152.0 1.73 174.0 196.0 218.0 152.5 2.33 174.5 196.5 218.5 153.0 2.93 175.0 '197.0 219.0

~("'N 153.5 3.25 175.5 197.5 219.5'

'\ 154.0 3.79- 176.0 198.0 220.0 154.5 4.10 176.5 198.5 220.5

-155.0 3.41 177.0 199.0 221.0 155.5 2.98 177.5 . 24 199.5 221.5 156.0 1.59 178.0 . 31 200.0 222.0 156.5 .06 178.5 . 10 200.5 222.5

.157.0 179.0 201.0 223.0 157.5 179.5 . . 38 201.5 223.5 i~ 158.0 180.0 . 96 202.0 224.0 158.5 180.5 1.16 - 202.5- 224.5 159.0 181.0 1.30 203.0 225.0 159.5 1.20 -181.5 . 77 203.5 225.5 160.0 2.35 182.0 204.0 226.0 160.5 2.91 182.5 204.5 226.5 161.0 3.17 183.0 205.0 227.0 .

161.5 3.04 183.5 205.5 227.5 .05 162.0 2.45 184.0 .206.0 228.0 162.5 1.44 184.5 206.5 228.5 '.19

.163.0 1.09 185.0 207.0 229.0 .13

~163.5 .53 185.5 207.5 229.5 164.0 - .16 186.0 208.0 230.0 164.5 186.5 208.5 230.5 165.0 187.0 209.0 231.0 165.5 187.5 209.5 231.5 p) t y, *Where .there are no values for porosity, the calculated value was zero.

k QE240.2-7

- -- - ,. m - , , , , . .. w , ,,--<,..-y,,. ,, . ,,, .,,,.-,,.-y, - , .- -.s-- ,-e r--.- -.- r

l- AMENDMENT NO. 3 l Braidwood ER-OLS SEPTEMBER 1983 4

TABLE QE240.2-2 (Cont'd) h DEPTH POROSITY DEI'TH POROSITY DEPTH POROSITY DEPTH POROSITY (FT) (%)a (PT) (%)a (PT) (%)a _ (PT) (%)a 232.0 254.0 7.70 232.5 254.5 7.74 233.0 255.0 8.15 233.5 255.5 8.03 234.0 256.0 7.65 234.5 256.5 8.24 235.0 257.0 8.89 235.5 257.5 8.42 236.0 258.0 8.38 236.5 258.5 8.50 237.0 259.0 8.55 237.5 259.5 8.82 238.0 260.0 8.85 ,

238.5 260.5 8.38 239.0 261.0 8.95 239.5 261.5 8.50 240.0 262.0 7.79 240.5 262.5 7.79 241.0 263.0 7.38 241.5 .16 263.5 6.76 242.0 .42 264.0 242.5 .69 243.0 .50 243.5 .31 244.0 .12 244.5 245.0 245.5 .

246.0 246.5 .

247.0 247.5 248.0 248.5 249.0 1.46 249.5 4.22 250.0 6.30 -

250.5 8.44 251.0 9.35 251.5 9.74 252.0 10.03 252.5 8.99 253.0 S.35 253.5 8.19 aWhere there are no values for porosity, the calculated value was zero. h QE240.2-8

(3 Braidwood ER-OLS AMENDMENT 3

\mj SEPTEMBER 1983 QUESTION E240.3 Provide additional background information with respect to the TOS limits mentioned in the 2nd paragraph on page 2.4-5.

Specifically, is the TDS limit a requirement for plant opera-tion or a discharge limitation for the river?

RESPONSE

The TDS limit referred to (1151 ppm) is a calculated, self-imposed limit for treatment of water required for plant operation. The Illinois effluent standarc is 3500 ppm. The Illinois water quality standard is 1500 ppm which is to be met at the edge of a 26 acre mixing zone.

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's_- QE240.3-1

- . ~ , . _ . -, ,.,,..,.%..,. __..,,,,,,-r..,..-,.,,._,_.._,_-,.,,...,4_ , . - -....,,.g,.. .,,.......-c_.,,_,. .nme,,,., ,_, ,

Braidwood ER-OLS AMENDMENT 3 l

p)

(_ SEPTEMBER 1983 1

QUESTION ~E240.4 Provide clarificatinn of your agreement with the Illinois Department of Conservation, with respect to withdrawal rates from the KanKakee River. Is the agreement in terms of gross or r net withdrawal? Based on historic Kankakee River flows and 100% load factor would the agreed to 10% factor have beer ex-ceeded in the Kankakae River historic record? If the with-drawal rates would have been limited during the historic record, would the pond volume ano area be sufficient to allow continued operation at 100% power? If not, then provide a complete evaluation including projected durations of outage and/or reduced power. The evaluation should include acknow-ledgement and consideration that periods of drought are gener-ally associated with a period of high electrical demand.

RESPONSE

The agreement with the Illinois Department of Conservation provides that the maximum withdrawal rate of water from the Kankakee River will De 160 cfs. In addition, water withdrawal

(~T will cease when the river flow is at 442 cfs, or less, and A/ withdrawal will De limited so that the flow of the river would not be reduced below 442 cfs. The station can operate without make-up water from the river by drawing'down the pond level from normal elevation of 595 feet MSL to 592.8 feet MSL at which point the units would have to be shutdown.

Based on Kankakee River flow historic record covering the period 1915 through 1982, there was only one occurrence, 1936, when the plant power would have had to be curtailed for a period of about eight days. The assumptions that led to this conclusion are: (1) no water would be withdrawn from +.ne river if the flow were below 495.5 cfs which equals the agreed to low flow cut-of f plus the capacity of one make-up pump (CECO did not consider modulations of withdrawal in the 442-495.5 cfs flow range); (2) the evaporation rate is 72.2 cfs which is the rate for June, the month with the highest evaporation rate; (3) power production was at 100% capacity; and (4) no rainfall on the 2537 acre pond during the period. The station could have stayed on line during this period by judicious loading of the units and still maintained a 72% capacity factor. Thus, out of the 66 year historic record of Kankakee River flows, the maxi-mum exposure would have been either loss of output for eight days or restriction of the capacity of the station to 72% for a 42 day period. This capacity factor could have been achieved by reducing load at night and weekends, which are historically 7_)

( lower load periods, s.-

QE240.4-1 i

Braicwood ER-OLS AMENDMENT 3 SEPTEMBER 1983 llh and still have been available to provide peak power when the CECO system demand would be at peak. This production restric-tion would not have an adverse ef fect on the CECO system electrical integrity.

The withdrawal restrictions covered by this agreement will nave no adverse effect on the safe operation or shutdown of the Braid wood Station.

O QE240.4-2

. . . - - . . - - . - . = _ .-._ . . - -.

Braidwood ER-OLS AMENDMENT 3 SEPTEMBER 1983

)  :

!' QUESTION E240.5 i: ~What are the potential impacts-to local-population and property of a postulated failure of the dike that forms the onsite pond?

RESPONSE

1 l Tne cooling pond dikes are designed to De extremely stable structures, with more-conservative design criteria than those j ' recommended in the National Dam Safety Program. Most of the exterior' dike except a portion of the dike on the west, is either very low or the general ground level is at or above the top of dike elevation. The' cooling pond has a spillway ae-signed to safely pass all floods up to the probable maximum flood-(PMF). Sufficient freeboaro is provided to the top of the dikes over the extreme case of PMF level in the pond to prevent overtopping of the dikes due to wind waves. The up-stream .f ace of the dikes is protected with riprap. The dikes are also provided witn a slurry trench. Therefore, it is highly unlikely that the oikes will fail during the occurrence of severe precipitation or due to any other natural causes.

4 I) During an unlikely event of a dike 1Dreach, it is postulated that a 100-foot wide breach will-occur in the west dike, south

of the spillway location. This location is selected based on 1 the fact the dike is the highest, in relation to the grounc elevation on the land side of the dike. The breach is con-iservatively postulated to De for the. full depth below the normal pool Llevel of

595.0 feet, and is approximately 10 feet

-deep.

'The peak outflow through the '1 00' -x 10' Dreach _section is esti-mated to be approv.imately 9800 cubic feet per second (Reference

. 1). The outflow will reauce with time as the water level in the pond. recedes,

.The_ area downstream 1of'the west dike is farmland and slopes down in'a westerly direction towards1the-Mazon River.

- The outflow _through the_ postulated Dreach will spread out and flow as shallow'overlana flow towards the Mazon River and flow into 7

it (Figures 2.4-1. and 2. 4 -5, ER-OLS).

A discussion'of the cross-sections, flow capacity and discharge 5 t.

rating curves for the Mazon River between its junction' witn

_. Granary Creek and the olo, Route 66 Dridge, is given in Section 2.'4.of-the Braidwooo FSAR. It can De.seen from the rating curve (Figure _2.4-23, FSAR) for the~Mazon' River, that the river J/~3- 3can carrysthe_ maximum: outflow of: 9800 cfs at an elevation of

'V Q E240. 5-1

Braidwond ER-OLS AMENDMENT 3 g SEPTEMBER 1983 w 570.0 feet, which is at least 10 feet below the general ground elevation of the area west of the cooling pano.

The community of Braceville lies west of the cooling pond; however, it will not be affected by the dike breach since most of the town is north of the area through which the outflow from the breach would pass. In addition, the community will be protected by the embankment of Routes 53 ano 129 and the Illinois Central Gulf Railroad. Tnere is a small portion of Bracev111e, consisting of approximately 31 homes, located south of the railroso tracks, and an additional 12 farmsteaos are in the area between the dike anc the Mazon River. There are approximately 119 people in these homes.

Therefore, the postulated dike breach may flood some farmland west of the cooling pond but will nave very little impact on the population near the cooling pond.

O

Reference:

1. U.S. Army Corps of Engineers, Military Hydrology, R&D Branch, 1957, Flow Through a Breached Dam, Military Hyorology Bulletin No. 9, washington, D.C.

QE240.5-2

Braidwood ER-OLS AMENDMENT 3 .

SEPTEMBER 1983

(])

QUESTION E290.5 4 Provide. the extent of the area used for permanent plant facili-

. ties exclusive of the cooling pond.

n

RESPONSE

The area available for the use of the permanent plant facili-ties north of the cooling pond excluding the cooling pond and the area between the adjacent property line and pond dikes

-(except on the north side of the pond) is.approximately 556 acres. Out of this area the permanent plant facilities, namely, the-main plant buildings, switchyard, the parking areas, and the roads, etc., occupy approximately 125 acres.

QE290.5-1

.( ])

Braidwood ER-OLS AMENDMENT 3 O SEPTEMBER 1983 QUESTION E290.6 There are a number of differences in the transmission facili-ties described in the FES-CP and the ER-OL. Were the existing 345 KV lines to the LaSalle County Generating Station and the East Frankfort 1ransmission Substation built especially for the transmission of power from the Braidwood Generating Station?

If not, provide a brief explanation of the need for these transmission lines. Provide a brief explanation of why the Braidwood to Joliet Generating Station corridor described in tne FES-CP p. 3-25 is not mentioned in the ER-OL.

RESPONSE

The two 345 KV transmission lines between LaSalle County Gener-ating Station and the East Frankfort Transmission Substation were not built especially for the transmission of power from the Braidwood Generating Station. The original LaSalle County Station transmission plan included two lines from the station directly to East Frankfort. Looping these lines into Braidwood Station eliminated the need for the Brcidwood to Joliet Gener-

.f 3 ating Station lines. The revision increased the number of

(,) lines into Braidwood from four to six, thus increasing the off-site reliability. The result was a net saving of $30 million dollars and the. lessening of environmental impacts due to fewer miles of right-of-way and transmission structures.

In summary, the changes in the Braidwood transmission facili-ties between the plan at the time of the construction permit and the present plan were deviseo to reduce the environmental impacts, to save money and to improve off-site reliability.

QE290.6-1

Braidwood ER-OLS AMENDMENT 3 O- SEPTEMBER 1983 QUESTION E290.7 The FES-CP in Section 2.7.1.1. states that the site consists of 4,420 acres. The ER-OL states that the site consists of 4,454 acres. Indicate on a map or aerial photograph the location of this additional acreage and its previous and present land use/

lano cover.

RESPONSE

The 4420 acre figure in the FES-CP includes the acreage of the pipeline corridor and river screenhouse site. In Section 4.1 of the FES-CP the main site size was stated to De 4320 acres and the pipeline corridor and river screenhouse site was stated to De 100 acres.

Approximately 160 acres of strip mined land were added to the southeast section of the main site. The adoitional area is indicated on Figure QE290.7-1. Minor reductions due to the sale or exchange of small tracts and final survey adjustments resulted in a net increase of 134, acres to the final total of 4454 acres. The pipeline corridor and river screenhouse site p)s x_ contain 139 acres. Part of this additional acreage was required for widening part of the corridor to accommodate the Braidwood Station to East Frankfort transmission lines that were not considered in the FES-CP.

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Braidwood ER-OLS AMENOMENT 3 O SEPTEMBER 1983 QUESTION E290.8 Chapter five does not address environmental effects of station f operation on land use and terrestrial ecology. Please provide a current evaluation.

RESPONSE

The primary environmental effects of station operation on land use and terrestrial ecology occurred at the time of construc-tion of the station and the construction and the filling of the cooling pond. These effects were conversion of land use from strip mine spoil and farmland to station facilities and cooling pond. The principal effects on terrestrial ecology were con-version of terrestrial habitat to aquatic habitat and conse-quent dislocation of resident terrestrial populations. As the area from the pond to the site perimeter has been revegetated, this land is providing habitat for terrestrial species. Addi-tional habitat will be available as the interior dikes and islands revegetate and other areas disturbed by. construction are revegetated. Approximately 1800 acres are available for

-wildlife habitat (total site acreage of 4454 minus water sur-() face area of 2537 acres and 125 acres containing plant facili-ties). This compares.to'the preconstruction situation where there were 471 acres of fallow land, 394 acres of woodland and 2567 acres of strip mine spoils, much of which were ponds and bare land.

Section 5.1.4 contains a discussion of the increase in humidity within a few hundred meters of the shoreline of the cooling pond and the potential for the occurrence of additional fogging

.and icing on the surrounding area.

Section 5.7.1 states that 0.22% of the farmland in Will County will be unavailable for agricultural use during the life of the station.

Tne results of the 1979 to 1982 terrestrial monitoring program which are summarized in'Section 4.1.4.1.1 of the ER supports the current evaluation that no terrestrial ecological effects have occurreo outside the station boundary and none are ex-pected to occur.

l() QE290.8-1 w _ __ _ _ - _ - - . - - - -