ML20083Q245

NRC Inventory of Dams

ML20083Q245
Person / Time
Issue date:	01/31/1983
From:	Lear G, Thompson O NRC
To:
References
NUREG-0965, NUREG-965, NUDOCS 8302250115
Download: ML20083Q245 (98)

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NUREG-0965 NRC Inventory of Dams U.S; Nuclear Regulatory Commission Pr: pared by G. E. Lear, O. O. Thompson f"" %,

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NOTICE Availability of Reference Materials Cited in NRC Publications Most documents cited in NRC publications will be available from one of the following sources:

- 1. _ The NRC Public Document Room,1717 H Street, N.W.

Washington, DC 20555 '

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Referenced documents available for inspection and copying for a fee from the NRC Public Docu-ment Room include NRC correspondence and internal NRC memoranda; NRC Office of Inspection and Enforcement bulletins, circulars, information notices, inspection and investigation notices; Licensee Event Reports; vendor reports and correspondence; Commission papers;and applicant and licensee documents and correspondence.

The following documents in the NUREG series are available for purchase from ths NRC/GPO Sales Program: formal NRC staff and contractor reports, NRC-sponsored conference proceedings, and NRC booklets and brochures. Also available are Regulatory Guides, NRC regulations in the Code of Federal Regulations, and Nuclear Regulatory Commission Issuances.

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Single copies of NRC draft reports are available free upon written request to the Division of Tech-nical Information and Document Control, U.S. Nuclear Regulatory Commission, Washington, DC

-20555.

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GPO Printed copy price:

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NUREG-0965 NRC Inventory of Dams 1

l MInuscript Completed: November 1982 D:ta Published: January 1983 Prepared by G. E. Lear, O. O. Thompson U.S. Nuclear Regulatory Commission Wnhington, D.C. 20555

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s ABSTRACT The NRC Inventory of Dams has been prepared as required by the charter of the NRC Dam Safety Officer. The inventory lists 51-dams associated with nuclear power plant sites and 14 uranium mill tailings dams (licensed by NRC) in the U.S. - as of February 1,1982.

Of the 85 listed nuclear power plants (148 units), 26 plants obtain cooling water from impoundments formed by dams. The 51 dams associated with the plants are:

(1) located on a plant site (29 dams at 15 plant sites)

(2) -located off site but provide plant cooling water (18 dams at 11

. additional _ plant sites)

. (3) located upstrea from a plant (4 dams) -- they have been identified as dams whose failure, and ensuing plant flooding, could result in a radiological risk to the public health and safety' The dams that might be considered NRC's responsibility in terms of the Federal dam safety program are identified. This. group of dams (20 on nuclear power plant sites and 14 uranium mill tailings dams) was obtained by eliminating dams that do not pose a flooding hazard (e.g., submerged dams).and dams that

.are regulated by another' Federal agency.

The report includes the principal design features of all dams and related useful information.

I iii

CONTENTS Page ABSTRACT.........................................................

iii ACKNOWLEDGMENTS..................................................

vii 1

BACKGROUND....................................................

1

2. PURPOSE AND SC0PE.............................................

1 3

DISCUSSION....................................................

2 3.1 Dams Associated with Nuclear Power Plants Sites........

2 3.1.1

'Onsite Dams..................................

3 3.1.1.1 Dams Classified as Seismic Category I........................

3 3.1.1.2 Dams Not Classified as Seismic Category I........................

3 3.1.2 Offsite Dams.................................

3.1.2.1 Offsite Dams Providing Cooling Water.............................

4 3.1.2.2 Offsite Dams Located Upstream.......

4 3.2 Uranium Mill Tailings-Dams.............................

5 4 IDENTIFICATION OF FGDS DAMS..................................

6 i

REFERENCES....................................................

7 APPENDIX A -

SUMMARY

OF DAMS AND WATER SOURCES ASSOCIATED WITH i

NUCLEAR PDWER PLANT SITES APPENDIX B - PRINCIPAL DESIGN FEATURES OF ONSITE DAMS APPENDIX C - PRINCIPAL DESIGN FEATURES OF URANIUM MILL TAILINGS DAMS LOCATED IN NON-AGREEMENT STATES APPENDIX D - PRINCIPAL DESIGN FEATURES OF 0FFSITE DAMS APPENDIX E - URANIUM MILLS LOCATED IN AGREEMENT STATES v

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d ACKNOWLEDGMENTS

.The compilation of information'in this report was a cooperative effort by many NRC staff, including the NRC Standing Dam Safety-Advisoty Group members who

. helped develop.the report format and who with assistance from their colleagues,

- provided many helpful review comments. The comments from the Regional Offices were also a valuable contribution.

Particular appreciation ;is'due to Andrew Ryan, a cooperative education student-in the Engineering Division during January-August 1982, who performed a major part-of the search of NRC files to compile ~the inventory.

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i NRC STANDING DAM SAFETY ADVISORY GROUP George E. Lear, Office of Nuclear Reactor Regulation Dam Safety Officer, Chairman Owen 0. Thompson, Office of Nuclear Reactor Regulation Deputy Dam Safety Officer Rex G. Wescott, Office of Nuclear Reactor Regulation Donald A. Nussbaumer, Office of State Programs John F. Kendig, Office of State Programs Daniel Gillen, Office of Nuclear Material Safety and Safeguards Peter J. Garcia, Office of Nuclear Material Safety and Safeguards Leon L. Beratan, Office of Nuclear Regulatory Research Thomas J. Nicholson, Office of Nuclear Regulatory Research Robert E. Shewmaker, Office of Inspection and Enforcement Eugene Gallagher, Office of Inspection and Enforcement John F. Klucsik, Office of the Executive Legal Director ix

NRC INVENTORY OF DAMS 1 BACKGROUND The Federal Dam Safety Program was initiated by President Carter in 1977 (Ref. 1). As part of that program, NRC submitted a report on its practices relating to dam safety (Ref. 2) to an interagency committee for their review.

After reviewing the input from all participating Federal agencies, the commit-tee prepared the Federal Guidelines for Dam Safety (FGDS) (Ref. 3).

In a memo-randum to the Chairman of NRC (et al. ) dated October 4,1979 (Ref. 4), Presi-dent Carter requested that "the heaa of each Federal Agency responsible for or involved with.~.. regulation...of dams adopt and implement the Federal Guide-lines." The Federal Guidelines recommend that each Agency's Dam Safety Officer should "... maintain an inventory of agency dams..." and, in reports to FEMA on NRC progress in implementing the Federal Guidelines (Refs. 5 and 6), the NRC committed to prepare the inventory.

2 PURPOSE AND SCOPE The primary purpose of this study was to identify all dams that could, in any way, be considered NRC dams in the context of the Federal Guidelines.

A second-ary purpose was to identify the particular dams for which the Federal Guidelines may be applicable and for which the NRC might be considered " responsible" in terms of the Federal Guidelines.

These dams are described as FGDS dams.

The study included all nuclear power plants that were operating or under con-struction and all uranium mills licensed by the NRC, as of February 1, 1982.

For nuclear power plant sites, the inventory includes water-retaining struc-tures that meet the Federal Guidelines definition of a dam (i.e., more than 25 ft high or retaining more than 50 acre-ft of water) and that (1) are located onsite (i.e., on a nuclear power plant site), or (2) are located offsite and provide cooling water for nuclear power plant operations, or (3) are located offsite, upstream from a nuclear power plant, and have been identified as dams whose failure, and resulting plant flooding, could result in a radiological risk to the public health and safety.

The inventory also includes all dams associated with uranium milling operations that are licensed by the NRC (i.e., uranium mill tailings dams that are not located in Agreement States).

TheinformationprovidedinthisreportwasobtainedfromNRCfiles(primarily license application documents such as Safety Analysis Reports).

Duringithe file search, other useful information was recorded.

The data provided in this report for reference include

(1) sources of normal and emergency cooling water for each nuclear power plant (Appendix A)

(2) a listing of other onsite water-retaining structures that do not meet the definition of a dam (e.g., ponds, canals, basins) (Appendix A)

(3) identification of the Federal agency that regulates each listed offsite dam--all offsite dams were, coincidentally, found to be regulated by another Federal agency (Appendix A)

(4) the principal design features of all onsite dams (Appendix B) and all

-uranium mill tailings dams (Appendix C)

(5) descriptive features of listed offsite dams (Appendix D)

(6) a listing of uranium mills located in Agreements States (Appendix E)

This study did not include a rigorous check of actual field conditions for con-formance with the information obtained from the NRC documents.

Because there are often field changes during construction and operation of a facility, the information provided in this report should be used judiciously.

3 DISCUSSION 3.1 Dams Associated with Nuclear Power Plant Sites On February 1, 1982, there were 85 nuclear power plants (148 units) operating under construction or proposed in the United States, and 26 of these plants obtain cooling water from impoundments formed by dams; 11 of the 26 plants use preexisting offsite impoundments only, 5 use both onsite and offsite impound-ments, and 10 use onsite impoundments only.

Appendix A lists all the plants included in the study and identifies the normal and emergency cooling water sources associated with each plant, and all onsite or offsite dams that impound cooling water.

A listing of other onsite water-retaining structures (ponds, canals, basins, etc., that do not meet the definition of a dam) and related comments are also provided for each plant.

There are 33 impoundments (listed in Appendix A) for the 26 relevant plants beceuse some plants have more than one impoundment. There are 51 dams listed because some impoundments are formed by more than one dam.

The details of these groups of dams / impoundments are as follows:

Onsite Dams Offsite Dams Total Other Than Seismic Seismic Providing Upstream Category I Category I Plant Water Impoundments 4

10 15 4

33 Dams 14 15 18 4

51 2

)

3.1.1 Onsite Dams Of the.29 onsite dams, 14 dams are classified as seismic Category I and 15 are not classified as seismic Category I.

The principal design features of these onsite dams are provided in Appendix B.

The information was obtained from PRC files (predominantly the PSAR and FSAR), ana the details generally include dam height and crest length, reservoir capacity, freeboard, drainage area, inspec-tion programs, and typical cross-sections.

Information that is missing from the descriptions was not available in the NRC files reviewed.

3.1.1.1 Dams Classified as Seismic Category I The 14 seismic Category I dams impound emergency cooling water for 10 plants as follows:

Catawba McGuire Clinton North Anna (2 dams)

Comanche Peak Oconee Farley Summer (3 dams)

~

Harris (2 dams)

Wolf Creek Three of these plants (Farley, McGuire, and. North Anna) have independent emer-gency impoundments.

At the Harris site, the Main Dam has been designated as seismic Category I, but emergency cooling water is impounded by the Auxiliary Dam that isolates an arm of the main reservoir.

The remainder of the seismic Category I impoundments are formed in an arm of a principal reservoir by sub-melged or partially submerged dams, and they are not included in the listing of FGD5 dams in the conclusion of this report because their failure would not pose a flood hazard.

3.1.1.2 Dams Not Classified as Seismic Category I Of the 15 onsite dams that are n'ot classified as s.eismic Category I, 14 dams impound normal cooling water'for 9 plants, as follows:

Braidwood Dresden North Anna

• Clinton LaSalle South Texas Comanche Peak-Midland Wolf Creek (6 dams)

At one plant (McGuire), the onsite dam that is not seismic Category I provides storage for wastewater.

All of these dams are included in the listing of FGDS dams in the conclusion of this report.

Some of these dams are licensed by a State agency.

3.1.2 Offsite Dams Of the 22 offsite dams listed in Appendix A, 18 form impoundments that provide cooling water for nuclear power plants.

The remaining 4 dams are upstream

• Also used for alternate source of emergency cooling water.

3

d from nuclear power plants, and they have been identified as dams whose failure, and ensuing plant flooding, could result in a radiological risk to the public health and safety.

Descriptive features of these offsite dams are provided in Appendix D, based primarily on information obtained from the inventory of dams prepared by the U.S. Army Corps of Engineers (Ref. 7).

3.1.2.1 Offsite Dams Providing Cooling Water Cooling water for normal operations (and in 4 cases for emergency operation) of nuclear power plants is obtained from 15 offsite impoundments formed by 18 off-site dams.

All of.the offsite dams are regulated by another Federal agency and therefore are not included in the listing of FGDS dams in the conclusion of this report.

The dams in this category (Dam Name, Regulatory Agency, and associated nuclear power plant) are as follows:

Chickamauga Dam (TVA) - Sequoyah and Watts Bar Conowingo Dam (FERC) - Peach Bottom

• Cowans Ford Dam (FERC) - McGuire Dardanelle Dam (COE) - Arkansas Dresden Island Lock and Dam (C0E) - Dresden Frees Creek Dams (3 dams) (FERC) - Summer Guntersville Dam (TVA) - Bellefonte Keowee and Little River Dams (Lake Keowee) (FERC) - Oconee Lake Robinson Dam (FERC) - Robinson

• Lake Wylie Dam (FERC) - Catawba Pickwick Landing Dam (TVA) - Yellow Creek Rancho Seco Dam (FERC) -Rancho Seco Sherman Dam (FERC) - Yankee Rowe*

Vernon Dam (FERC) - Vermont Yankee

• Wheeler Dam (TVA) - Browns Ferry 3.1.2.2 Offsite Dams Located Upstream Dams located upstream from nuclear power plants are considered in the NRC licensing process if dam failure could lead to flooding of a nuclear power plant that could result in a radiological risk to the public health and safety.

Four dams that meet this criterion have been identified in Appendix A and are included in Appendix D.

They are (Dam Name, Federal Regulatory Agency, and Plant Name):

Harriman Dam (FERC), 6 miles upstream from Yankee Rowe Jocassee Dam (FERC), 10 miles upstream from Oconee

• Impounds normal and emergency cooling water 4

Montgomery Lock and Dam (FERC), 3 miles upstream from Beaver Valley Watts Ba-Dam (TVA), 2 miles upstream from Watts Bar All of dams are regulated by other Federal agencies (FERC or TVA) and therefore are not included in the listing of_FGDS dams in the conclusion of this report.

In addition, it appears that any other offsite dams upstream from nuclear power plants are not within NRC purview because they are either too small or too far removed from a nuclear power plant to pose a flooding hazard that would result-in a radiological risk to the public health and safety.

3.2 Uranium Mill Tailings Dams The uranium mill tailings dams that are licensed by NRC are as follows:

Uranium Mill State Number of Dams Comments Bear Creek Wyoming 1

Licensee investigating raising of dam Federal American Partners Wyoming 2

No more raises planned Gas Hills Wyoming 1

- No more raises planned Highland Wyoming 1

No more raises planned Lisbon Utah 1

Dam is one of a series Lucky Mc Gas Hills Wyoming 1

One more raise planned Moab Utah 1

Secpage problems (Pathfinders) Shirley Basin Wyoming 1

No more raises planned (Petrotomics) Shirley Basin Wyoming 1

None Shootering Canyon Utah-1 One more raise planned Split Rock Wyoming 1

One more raise planned Sweetwater Wyoming 1

None White Mesa Utah 1

Dam is one of a series The listing shows that there are 14 uranium mill tailing dams located at 13 uranium mills that are licensed by NRC.

They are located in Wyoming (10 dams) and Utah (4 dams).

The TVA Edgemont Uranium Mill in South Dakota was not included in the study because it is no longer operating ord is undergoing

-reclamation.

In cases where dams were constructed in a series, so that flow from an upstream failure would be retained by a downstream dam, only the further-most downstream dam currently being utilized has been included.

This is the case at the Lisbon Mine and Mill, the Lucky Mc Gas Hills Mill, the' Pathfinder Shirley Basin Mill, and at the White Mesa Uranium Mill.

5

Appendix C provides the principal design details of each of the uranium mill tailings dams listed above, such as dam height and length, reservoir capacity, surface area, inspection programs, etc.

It also provides a typical cross-section of each dam.

All sources of information are noted at the bottom of the forms; most of the information was obtained from the latest consultant's can-struction reports. Missing information was not available in the documents reviewed.

All of these dams are included in the listing of FGDS dams in the conclusion of this report.

Although uranium mill tailings dams in Agreement States have not been included in this inventory,_ Appendix E identifies the uranium mills in Agreement States where there may be tailings dams.

This information was obtained from the

" Directory and Profile of Licensed Uranium Recovery Facilities" (Ref. 8).

4 IDENTIFICATION OF FGDS DAMS The inventory shows that there are 51 dams that form 33 impoundments associated 4

with nuclear power plant sites in the United States, as described in Section 3.1 of this report.

Dams for which the Federal Guidelines may be applicable and for which the NRC might be considered " responsible" in terms of the Federal Guidelines (FGDS dams) were identified by eliminating those dams that are judged to not be in this category, i.e.,

(1) dams that are submerged or isolate an arm of a principal impoundment because their failure would not pose a flood hazard (the principal dam would be the FGDS-designated dam)

(2 dams that are regulated by another Federal agency (Corps of Engineers, Federal Energy Regulatory Commission, or Tennessee Valley Authority) because these agencies already have regulatory authority for Federal Guidelines aspects of these dams

(

(3) dams that are too small or too far removed from a nuclear power plant site to pose a flooding hazard to a plant because these dams are r.ot within NRC regulatory authority The NRC inventory of 51 dams (33 impoundments) associated with nuclear power l

plant sites contains 20 FGDS dams (14 impoundments) as follows (Nuclear Power Plant Name, State, Dam Name):

Onsite, seismic Category I dams (5 dams, 4 impoundments):

Farley (Ala.) - Category I Holding Pond Embankment McGuire (N.C.) - Standby Nuclear Service Water Pond Dam North Anna (2 dams) (Va.) - Service Water Dikes 1 and 2 Harris (N.C.) - Main Dam Onsite dams that are not seismic Category I (15 dams,10 impoundments):

Braidwood (Ill.) - Cooling Pond Embankment Clinton (Ill.) - Main Dam 6

Comamche Peak (Tex.) - Squaw Creek Dam Dresden (Ill.) - Spray Pond Impoundment LaSalle (Ill.) - Cooling Pond Dike McGuire (N.C.)

. Wastewater Collection Basin Dam Midland (Mich.) - Cooling Pond Dike North Anna (Va.) - North Anna Dam South Texas (Tex.) - Cooling Pond Embankment Wolf Creek (6 dams) (Kans.) - Main Dam and Saddle Dams (i) through (v).

All 14 uranium mill tailings dams in the NRC inventory of dams are classified as FGDS dams.

They are as follows (Mill Name, State):

Bear Creek (Wyo.)

Federal American Partners (2 dams) (Wyo.)

Gas Hills (Wyo.)

Highland (Wyo.)

Lisbon (Utah)

Lucky Mc Gas Hills (Wyo.)

Moab (Utah)

(Pathfinders) Shirley Basin (Wyo.)

(Petrotomics) Shirley Basin (Wyo.)

Shootering Canyon (Utah)

Split Rock (Wyo.)

Sweetwater (Wyo.)

White Mesa (Utah) 5 REFERENCES (1) Memorandum from President Carter to the Chairman of the Nuclear Regulatory Commission (and to heads of other Federal agencies dealing with dams),

April 23, 1977.

(2) Letter from E. Case (NRC) to P. Smith (Office of Science and Technology Policy, Executive Office of the President),

Subject:

" Nuclear Regulatory Commission, Summary of Practices Relating to Dam Safety," September 2, 1977.

(3) Federal Coordinating Council for Science, Engineering and Technology,

" Federal Guidelines for Dam Safety," June 25, 1979.

(4) Memorandum from President Carter to the Chairman of the Nuclear Regulatory Commission (and to heads of other Federal agencies dealing with dams),

October 4, 1979.

(5) Letter from W. Dircks (NRC) to J. Macy, Director (FEMA),

Subject:

" Pro-gress Report, Implementation of Federal Guidelines for Dam Safety, U.S.

Nuclear Regulatory Commission, January 1,1980," March 12,1980.

(6) Letter from H. Denton (NRC) to L. Giuffrida, Director (FEMA),

Subject:

"Second Progress Report, Implementation of Federal Guidelines for Dam Safety, U.S. Nuclear Regulatory Commission, December 31, 1981,"

December 30, 1981.

7

U.S. Army Corps of Engineers, " National Program of Inspection of Dams,"

(7). Office of the Chief of Engineers, May 1975.

(8) Argonne National Laboratory, " Directory and Profile of Licensed Uranium-Recovery Facilities," May 1981 (Final Draft).

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Appendix A Summary of Dams and Water Sources Associated with Nuclear Power Plant Sites Arkansas Midland Bailly Mill stone Beaver Valley Monticello Bellefonte Nine Mile Point Big Rock Point North Anna Braidwood Oconee Browns-Ferry Oyster Creek-Brunswick Palisades Byron Palo Verde Callaway -

Peach Bottom Calvert Cliffs Perry Catawba Pilgrim Clinton Point Beach 1

Comanche Peak Prairie Island Cook

-Quad Cities 1

Cooper Station Rancho Seco j

Crystal River River Bend Davis-Besse Robinson Diablo Canyon Salem Dresden San Onofre Duane Arnold Seabrook Farley Sequoyah Fermi Shoreham Fitzpatrick Skagit/Hanford Fort Calhoun South Texas

.i Fort St. Vrain St. Lucie Ginna Summer I

Grand Gulf Surry Haddam Neck Susquehanna Harris Three-Mile Island Hartsville Trojan Hatch Turkey Point Hope Creek Vermont Yankee Humboldt Bay Vogtle Indian Point WNP 1, 2, 4 Kewaunee WNP 3, 5 Lacrosse Waterford LaSalle Watts Bar Limerick Wolf Creek Maine Yankee Yankee Rowe Marble Hill Yellow Creek McGuire limer Zion A-1 i

Summary of Dams and Water Sources

' Associated with Nuclear-Power Plant Sites Plant flame On-Site Dams Off-Site Dams Other Water Sources (Units)

Cat 1 flon-Cat I (Regulatory Agency)

(Comments)

Arkansas Dardanelle (fi)

Dugout spray pond on-site (E)

(2)

(C0E)

LakeMichigan(B)

Bailly (1)

Beaver Valley Montgomery Lock &

OhioRiver(B)

(2)

Dam (C0E)

Montgomery Lock & Dam is 3 miles upstream Bellefonte Guntersville(fi)

Emergency intake in Tennessee

'(2)

(TVA)

River Channel (E)-

Lake Michigan (B)

Bi Rock Point-(1 Kankakee River supplies on-site Braidwood 1(fi)

(2) impoundment.

Emergency water in depression in bottom of impoundment.

Wheeler (fl)

Emergency intake in Tennessee Browns Ferry (3)

(TVA)

River ~ Channel (E)

Intake from Snows Marsh, fed Brunswick.

(2) from Cape Fear River (B).

Discharge to Atlantic Ocean.

BigRockRiver(B)

Byron (2)

Callaway r:issouriRiver(ft)'

(2)

Dugout pond on-site (E) fl = water source for normal operations E = water source for emergency operations B = water source for both normal and emergency operations

= no dams t

t A-2

Summary of Dams and i'ater Sources Associated with Nuclear Power Plant Sites Plant Name On-Site Dams Off-Site Dams Other Water Sources (Units)

Cat 1 Non-Cat I (Regulatory Agency)

(Comments)

ChesapeakeBay(B)

Calvert Cliffs (2)-

Catawba Lake Wylie (N)

Cat. I dam isolates an am (2) 1 (E)

(FERC) of Lake Wylie Clinton 1 (E) 1 (N)

Cat..I dam is submerged (1)

Cat I dam isolates an arm of

. Comanche Peak 1 (E) 1 (N)

(2) non-Cat. I (Squaw Creek Reservoir).

LakeMichigan(B)

Cock (2) i Missouri River (B)

Cooper Station (1)

Gulf of Mexico (B)

Crystal River (1)

Lake Erie (B)

Davis-Besse (1)

Dike on-site separates marsh from Lake (per Bureau of Sports Fisheries & Wildlife).

Pacific Ocean (B)

Diablo Canyon (2) l l

N = water source for nomal operations

- E = water source for emerger.cy operations B = water source for both nomal and emergency operations

- = no dams A-3

A h-Summary of Dams and Water Sources Associated with Nuclear Power Plant Sites j

Plant Name On-Site Dams Off-Site Dams Other Water Sources (Units)

Cat 1 Non-Cat I (Regulatory Agency)

(Comments) j i

Dresden 1 (N)

Dresden Island (N)

Cooling water is pumped from (3)

(COE)

Dresden Island reservoir into on-site impoundment (Spray.

Pond) via canals that hold emergency supply of 9 million gallons (E).

Duane Arnold Cedar River (B)

(1)

Farley 1 (B)

Chatahoochee River provides (2) make-up for on-site impoundment that supplies cooling towers.

Fermi Lake Erie (B)

(1)

Fitzpatrick LakeOntario(B)

.(1)

Fort Calhoun Missouri River (B)

(1)

Fort St. Vrain South Platte River and St. Vrain (1)

Creek (N)

Two dugout spray ponds on-site (E) l Ginna LakeOntario(B)

(1)

Grand Gulf (2)

Wells beside Mississippi River (N).

Basin under cooling towers (E).

N = water source for normal operations E = water source for emergency operations B = water source for both normal and emergency operations

- = no dams A-4

Summary of Dams and Water Sources Associated with Nuclear Power Plant Sites Plant Name On-Site Dams Off-Site Dams Other Water Sources (Units)

Cat 1 Non-Cat I (Regulatory Acency)

(Comments)

ConnecticutRiver(B)

Haddam Neck (1)

Harris 1(E)

Cat. I dam isolates an arm of (4) 1 (N) on-site Main. Reservoir Hartsville No information obtained (2)

Altamaha River provides make-up Hatch (2) for cooling towers (B)

Delaware River (B)

Hope Creek (2)

Humboldt Bay Humboldt Bay (B)

(1)

Hudson River (B)

Indian Point (3)

LakeMichigan(B)

Kewaunee (1)

Mississippi River (B)

Lacrosse (1)

Illinois River provides water to LaSalle 1 (N) impoundment; emergency water in (2) depression at bottom (E).

Schuylkill River (N)

Limerick (2)

Dugout spray ponds on-site (E)

Black River (B)

Maine Yankee (1)

N = water source for normal operations E = water source for emergency operations B = water source for both normal and emergency operations

- = no dams A-5

Summary of Dams and Water Sources Associated with Nuclear Power Plant Sites plant Name On-Site Dams Off-Site Dams Other Water Sources (Units)

Cat 1 Non-Cat I (Requiatory Agency)

(Coments )

Marble Hill Ohio River (B)

(2)

McGuire 1 (E) 1 Cowans Ford (N)

Non-Category I dam is for (2)

(FERC) wastewater storage Midland 1 (N)

Tittabawassee River provides (2) watstr to non-Category I impoundment, emergency water in depression at bottom of impoundment (E).

Long Island Sound (B)

Millstone

( 3)

Mississippi River provides nonnal Monticello (1) make-up water for cooling towers (N). Emergency makeup water beneath cooling towers (E).

Lake Ontario (B)

Nine Mile Point (2)

North Anna 2 (E) 1 (B)

North Anna Dam provides normal (3) cooling water. It also provides makeup water to the independent emergency impoundment. Due to its Category I design it operates during both nonnal and emergency modes.

N = water source for normal operations E = water source for emergency operations B = water source for both normal and emergency operations

- = no dams A-6

Summary of Dams and Water Sources Associated with Nuclear Power' Plant Sites Plant Name On-Site Dams Off-Site Dams Other Water Sources (Units)

Cat 1 Non-Cat I (Regulatory Acency)

(Comments)

Oconee 1(E)

LakeKeowee(N)

Jocasse Dam is 10 miles upstream.

(3).

Little River (N)

Cat. I Dam is submerged within Jocasse (all FERC)

Lake Keowee (impounded by both Lake Keowee and Little River Dam).

Oyster Creek Intake from Forked River (B).

(1) discharge to Oyster Creek.

Small fire protection pond on-site.

Lake Michigan (B)

Palisades (1) -

Palo Verde City wastewater treatment plants (3) provides make-up for cooling towers which is stored in an on-site pond (N). On-site spray ponds (E).

Peach Bottom Conowingo (B)-

Conowingo Reservoir provides (2)

(FERC) make-up for cooling towers.

Lake Erie (B)

Perry (2)

Pilgrim Cape Cod Bay (B)

(1)

Point Beach Lake Michigan (B)-

(2)

N = water source for normal operations E = water source for emergency operations B = water source for both normal and emergency operations

- = no dams A-7

Sumary of Dams and Water Sources Associated with Nuclear Power Plant Sites Plant Name On-Site Dams Off-Site Dams Other Water Sources

{

(Units)

Cat 1 Non-Cat I (Regulatory Agency)

(Coments )

l Mississippi River (B)

Prarie Island (2)

Mississippi River (C)

Quad Cities-(2)

Rancho Se o (H)

Folsom South Canal (supplemented Rancho Seco (1)

(FERC) by Rancho Seco Reservoir) provides make-up water to cooling i

towers (N). Dugout spray ponds on-site (E).

Mississippi River provides River Bend (1) make-up for cooling' towers (B)

Robinson Lake Robinson (B)

(1)

(FERC)

DelawareRiver(B)-

Salem (2)

Pacific Ocean (B)

San Onofre (3)

Atlantic Ocean provides nonnal Saabrook (2) make-up for cooling towers (N).

Wells on-site provide emergency make-up (E).

4 Chickamauga (N)

Emergency intake in Tennessee Sequoyah (2)

(TVA)

River channel (E).

l l

l

(

N = water source for normal operations E = water source for emergency operations l

B = water source for both normal and emergency operations

= no dams l

l l

A-8 l

Summary of Dams and Water Sources Associated with Nuclear Power Plant Sites Plant Name On-Site Dams Off-Site Dams Other Water Scurces (Units)

Cat 1 Non-Cat I (Requlatory Agency)

(Comments)

Shoreham Long Island Sound (B)

(1)

Skagit/Hanford Colurrbia River orovides normal (2) make-up for cooling towers (N).

Buried tank on-site provides emergency make-up.(E).

South Texas 1 (N)

Colorado River supplies on-site (2).

cooling pond (N). Dugout pond on-site (E).

St. Lucie Atlantic Ocean (B). Alternate (2)

Cat. I intake structure provided.

r

- Sumer 3 (E)

(3) Frees Creek (N) 3 Category I dams isolate arm j

(1)

(FERC) of Frees Creek Reservoir.

Surry James River (B)

(2)

Susquehanna Susquehantia River provides normal (2) make-up for co'oling towers (N).

Dugout pond on-site (E).

Three Mile Susquehanna River (B)

Island (2)

Trojan-Columbia River (B)

(1)

Turkey Point Biscayne Bay provides make-up (2) for 2000 acres of cooling canals (B).

N = water source for normal operations E = water source for emergency operations B = water source for both nonnal and emergency operations i-

= no dams A-9

Summary of Dams and Water Sources Associated with Nuclear Power Plant Sites Plant Name On-Site Dams Off-Site Dams Other Water Sources (Units)

Cat 1 Non-Cat I (Regulatory Acency)

'(Coments )

(1)

~

VernonLake(B)

Lake provides make-up for Vermont Yankee (FERC) emerg. cooling towers.

Savannah River (N). Wet Vogtle-(2) cooling tower basin provides emergency make-up for-cooling towers (E).

Columbia River (N).

WNP 1, 2, 4 (3)

Dugout spray ponds on-site (E).

Wells on-site provide normal WitP 3, 5 (2) make-up for cooling towers (N)'.

Wet cooling tower basin provides emergency make-up water (E).

Mississippi River (N). Wet Waterford (1) cooling tower basin provides emergency make-up water for cooling towers-(E).

.:stts Bar Watts Bar, Ecergency intake in Tenressee (2)

Chickamauga (N)

River channel (E).

(both TVA)

Watts Bar Dam is 2 miles -

upstream.

Wolf Creek 1 (E) 6'(N)

Category I Dam is submerged.

(1)

Main dam and 5 saddle dams form non-Cat. I reservo'r.

Harriman,.

Harriman Dam is 6-miles Yankee Rcwe (1)

Sherman (8) upstream.

(both FERC)

L lI = water source for normal operations E = water source for emergency operations 3 = water source for both normal and emergency operations

- = no. dams l.

l i

A-10

l' Summary of Dams and Water Sources Associated with Nuclear Power Plant Sites

' Plant Name On-Site Dams Off-Site Dams Other Water Sources (Units)

Cat 1 Non-Cat I (Regulatory Agency)

(Comments) u.

Pickwick Landing (N)

Dugout' spray ponds onsite (E).

Yellow Creek (1)

(TVA)

Ohio River provides make-up Zimmer (1) for cooling towers (B).

LakeMichigan(B).

Zion

]

(2)-

85 plants

14 15 22 148 units N = water source _for normal operations E = water source for emergency operations B = water source for both normal and emergency operations

- = no dams A-11

Appendix B Principal Design Teatures of Onsite Dams Braidwood McGuire Catawba Midland Clinton North Anna Comanche Peak Oconee Dresden South Texas Farley Summer (Shearon) Harris Wolf Creek r

LaSalle B-1

m' O*

t_

kM

• sc e p.y

,/,CyMj[Q VA i

s s=-er r

i J

v. s'a+=.As reow s?A. Es. ao N tra 4518 etw,"1,

- +s.

c

'S' I

g, 5.wr-c' e

12 484a*

f I

sE30aws t

6 eina wo -

l

_________._t__

_w I

stea w a gg

..,u m s-e-on et

' 0*

S E CTION E 2 (m.9934 a o.s9sa BR AIDWOOD STATION FIN AL S AFETY AN ALYSIS REPORT FIGURE 2.4-35 DIKE SECTION AND DETAILS B-2

I Principal Design Features of On-Site Dams Date:

June 1982 1.

Licensee (Owner)

Comonwealth Edison Co.

2.'

Plant name Braidwood Dam name Cooling Pond Embankment NRC Docket No.

50-456/457-3.

Location: State Illinois County Will Mmiles froc: Bat"l cod 4.

Downstream population centers Name Morris.'Ill.

Population 8.194 Distance 18 mi +

5.

Rad. Hazard (Cat. I):

No

InundationHazard(L.M',H) 6.

Dam Characteristics:

Purpose Normal coolina water Elevations:

Type Homogenous earthfill Top 600' Height 20' Spillway 595.75' Length 63.300' Norm. Pool 595' Crest Width 14' Max. Pool 598' Slopes 3:1 Freeboard 2'

7.

Hydrology:

Drainage area 5.3 so miles Surface area 2475 acres Storage: normal 22.300 acre-ft Maximum '34.000 acre-ft Spillway type Ocee Discharge Cap.

2290 cfs 8.

Year construction started 1976 completed 1980 9.

Licensed by

10. Regular inspection:

Bimonthly water flow (amount of water flow into sample

' wells around the dam); Simonthly sedimentation checked.

t

11. COE Inventory Reference f None

12. References FSAR Section 2.4.8. Reaion III Paul Pelke

13. Comments Prepared By:

B-3

S.N S.W.

POND DAM TYPICAL SECTION i' DAM

.I.

.lY 4Y. _

49' NYS a'P RAP -

gg,j(g

[ **l_,4Chl ST EL $950 2_

W PONO

!"x Po'* EL 5619m sL%,

._t All

].3 RIP RAP {$EE ChE ST DE TAst )

reetu sMi2

\\

Is0HMAt PONO EL 57:Om MAX. 0 0 EL 5670~C#

[ $#

I I"

• ~ ~ ~ ~

~

LAN[ WVL/E p3 EL SS40s PI P2 py

.47. MAL.0Q [()g, 7" O N --- ~ gCR1LAnt BOTTOM . g A,%_, --- ZONt D BL ANKET OHaaN (SEE DE TAst) -EtS4}O~ 'N t/4 PONT OF DAM 8ASE CH4Olt TOP PARTIALLY WE ATHERED d6rI u- - I,h M W AP q ~ ~ - - r PHEPANED FOINDATION ( AHNOM $ w APPNOM. TOP ROCW ~ fur *'Tr PdET DNAWe FOLLOWS It( CONTtAJ4 OF THE NATUNAL L AhE 1901TUM A80VE EL $450 AND EM8315 KIWEEN EL S4S O

j s

- 8 EL $700 ONIGINAL GRADE AS FOLLOW $ . t,3 - [# *[,, f

• e Ian esastmas -

At 51AION 2 00. L E vt t At EL S4S O r , g,g m 8L ANkEl DRAIN SEGN$ AI EL SFO O p , f ' -(' AI SIATIOrt O.SO,5tOKS TO EL S430 5 BE htEN StAlIONS 600 AND 4.00 ' I,*

j {' '

SLOPt$ 10 EL '400 Ai SI Altun S.do* ( IHf.NCE 10 EL SFO O Al b!AisON 7.00 yI A TOE DHAaN l$ CONSihuCILO A90vE s ~---H,p..- t _ f[g'.t-Q %.. g....- 13.3 3 EL $TO O ONsGINAL GR&DE p .s 8 s. ......u......,N_1'**'*""' "~ ' ' ' t a BL ANKET IAtAIN DETAIL e e '.e TVPICAL $tCitoll.11AN061 IIUCll AA $(RulCE WA!!A POND OMt j CataweA 94ACLEast SFATu'. A t a

Principal Design Features of On-Site Dams Date: June 1982 1. Licensee (Owner). Duke Power Co. 2. Plant name Catawba Dam name Standby' Nuclear Service Water Dam NRC Docket No. 50-413/414 3. Location: State South Carolina-County York _ miles fror: l 4. Downstream population centers i Hame Population Distance-5. Rad. Hazard (Cat. I): Yes

Inundation Hazard (L, W H).

6. Dam Characteristics: Purpose Emergency cooline water Elevations: Type Homogenous - earthfill Top 595' Height 75' Spillway 571'- Length 1710' Norm. Pool 571' Crest Width-35' Max.' Pool sg2.3 3I Slopes Freeboard 12.7' upstream, 2.8' downstream 7.- Hydrology: Drainage area-410 acres Surface area as =rrac Storage: nomal - 560 acre-ft ~ Maximum 1200 arr..<* Spillway type Open pipe Discharge Cap. 380 efs 1980 +- 8. Year construction _starte<i completed 9. Licensed by As per Reg. Guide 1.127

10. Regular inspection:

11. COE Inventory Reference f

12. References FSAR 2.4. 9.2.1. 9.2.5

13. Comments Standby Nuclear Sarvice Water Dam i<nlatac in aram affska tru u.

Note differences in uostream/downstrew freeboard durina Standard Degjgt Mggd which would'be caused by failure of Cowans Ford Dam. Prepared _By: B-5

( CA e .-DETAL A "8 ' ' F. (-6" RrPAAP ON 9 IT/cA. Et nie FLTER I S 9'FLTER I !-- -j % NWMAL POOL EL 690 0' 4" TOPSOL AND $EEDING g'.g* RIPRAP ON 9" FILTEP 18 9' FLTER I / i EL 670 O' I'ST'"EI G GRAM -0EPTM W$ EL 6770 LSLTV CLAf, LITTLE SAND A80 FDsE EL *" \\ G EL (TYPE A C0as' ACTED FLL) 7 (<7 3ANo tmanAGE - 5 EL w (5 y ELVA45 ELAN *ET GLWR(S)-; - 6" TO DRass_ d _l j' 11 l , DEPTM WARES h [uTWTREMM { { co - 0~ 2'-6 J l 2' id 4 l t N k / f rwuxwagg% ~- %'rW4W/4W M 8 2"6 l OEPTH VARES FRCN S'-0* TO S'-0" dgAd M*. ST.FF T0 W $7fF MTV SAT WITN M0lbu To CENSE, FINE TO CGARSE SANO, SOME GRAVEL Ai.LuvlAL i WE W &@ "An emc AN T LL) ANO/OR OUT*ASM MATERJALS } TYPICAL DAM SECTION 40 0 40 80 SCALE IN F EET C3 1-tt' - sO" C'n l n'- s" l n' 5" fCAM crown OF DAM (-4" RiPR AP EL. 712 04' \\ s/4"/ F T f e/4" /FT _ l {T/ DAM EL TH e' ^ $===: x 9 FLTE R I j r' g -4" T;)P50'L k " 5EE;'M j c0NCRETE

4. "cRavEt ease j 3"esTUM*CuS g Nf 5

e p suRFACao a course <TvFE si f g\\ "SLTv CL Av.u?YLE SAND AND FINE ~ GRML ITveE A ;OMPACTED FEL 3 J \\ N DE Tall A e o e 4 CLINTON POWER STATION i SCALE IN FEET FIN AL S AF'ETY AN ALYSIS REPORT l FIG'SE 2.4-14 { TYP! CAL DAM CROSS SECT! Ora l l

r Principal Design Features of 'On-Site Dams Date: June 1982 1. Lic'ensee (Owner). Clinton Power Co. 2. Plant name 'Clinton Dam name Main Dam flRC Docket No. 50-461/462 3. Location: State Illinois County' De Witt _6, miles from ' Chicn 4. Downstream population centers Name Middletown Populati.on Distance ?? mi 5. Rad. Hazard (Cat. I): No

Inundation Hazard (L, M', H) 6.

Dam Characteristics: Purpose Normal cooling water Elevations: T'pe ~ un-mnn,.... w 411 Top 711_n' rfeight 56!8' Spillway 690' Length 3000' Norm. Pool agos Crest Width 22' Max. Pool 708.8 Slopes 3:1 Freeboard 3.0' 7. Hydrology: Drainage area 296 sq miles . Surface area anos ac m Storage: - nomal 74,200 acre ft Maximum [ ~-Spillway type 0 gee (service). Open (emergency) Discharge Cap. 33,200 cfs (. service), 102,700 (emergency)- 8. Year construction started completed Oct. 12, 1977 9'.. Licensed by Illinois Dept. of Transportation 4/7/76

10. Regular inspection:

Seeoace. settlement. horizontal movement. Monitorino frecuenCY unknown. t

11. COE Inventory Reference i c

12. References FSAR Sec. 2.4. 2.5.6, 9.2.5

13. Comments Prepared By:

B-7

5 20 2b a g ? Hf C j m .~ / ea w. E j .=. s j I, Ei 3 ~ 20 J, l3 z -j 3 t = .a 04 - = I ts

g

• =

g- =" u Z a 3:3 ~ ~r s 8J og + - gg = j u i l 2 i l e .r -/) e 7 i [ + j z. 3(" /,5 -e n, + = :~ $ I s . f'3. E. !. g

• a.

.o r-2 g.! D d.i 1 323 .t Es 5Q=l lC I t 02 I2 m'. As: 75 );. 2-8 '?:

• e
• 3 ye

~ ~ -- ? ~ 3

• g.._y f a q n,,e e

.r f t 't 8W 1 O ~- -3 7 3 _t 1 g,N* o 1 i 'e i / Q_(; y.L5 i \\ %" z o n 0 g J w .. a y \\ M b 1 ! j

i

,5 f f I *?! k \\ 2

m. 3 u

\\ ??! 5~l\\ v] t 3 5) - e-a .g Cy a L I I: 8 1 3 .I ) _g u. e L 3a e f 4-53 r / b !a=3 +y j 2 s s B-8

Principal Design Features of On-Site Dams Date: June 1982 1. Licensee (0wner) Clinton Power Co.

2. ' Plant name Clinton Dam name Submerged Category I Dam NRC Docket No. 50-461/462 De Witt 3.

Location-State Illinois County _p,milesfrom G ile.i 4. Downstream population centers Name Middletown Population 626 Distance 22 i 5. Rad. Hazard (Cat. I): Yes

Inundation Hazard (L, M', H)

None 6. Dam Characteristics: E.eroency coolina water Elevations: Purpose m Type Homooenous earthfill Top 675' j Height 17' Spillway Length 2350' Nom. Pool 675' Crest Width 30' Max. Pool 675' Slopes 5:1 Freeboard 7. Hydrology: Drainage area Surface area _112 acres Storage: nomt.1 650 acre-ft Maxi =um 650 acre-ft Spillway type None Discharge Cap. 8. Year construction started' completed 1977 + 9. Licensed by

10. Regular inspection: No routine inspection of submerged dam for seepage or settlement. Monitoring of sedimentation but frequency unknown.

11. COE Inventory Reference #

'12. References FSAR Sec. 2.4. 2.5.6. 9.2.5

13. Comments Soil-cement mixture. 2 feet thick, covers outside of dam for drawdown and seepage protection. Submerged Category I dam isolates an area of main Reservoir.

Prepared By: B-9

_ -cS. N II i i k ,W'/ !l :! I, i I lit .i I.l .i'. 4 5 5i 15.: Ijfli-l1.W 3., ,;l3 i;l l I, Q ] {M{ t' l1 g \\ i }h wl$l [,,hy; a d

1. ,)

}!N 4'h fig E } dim.i.iil{}*!!/pj' j / 31 ... ji j l f,,, 1 3, - 3.,,;a lI.:; 3 i-q l}ld.a. s 4u i / i -. \\.I.n & />. fi! i7 f -)%:] i.t 11. Nl / / i I 2 .l. si 1 I s a / " th ' E ? i l I I e- .5 .s i; l <0 frTl s1 r 3 l i --l a .f... ' 1 "j : e t i i ,/ g. - h, e = a a i.d- .;1 : 1 8 i .itr.1 9'- hr,.- il. _ j 5 a

16. A.:./.n :p..nn

./ - e /, > %,oe <,e l t l*

• i

' Ve, ,.1 Z 4l . :;;I _] .u l l

1. E )

e' s..g. k,gU.- .= 1..vi.f3 11: a I-li 1N I!!J 3,1 3

.23 11 !p s

.i .tt0 - 30 -i. 9 ( .n 4 ,1 ,6,, t iSr \\ M'! l-3 .e f h C - 3 1 Y Lj En 3 {i !( M

qi i i-lt !? 'i N 6s

.+t r 3 -eJ-g rpl I J' E I 9 i hl,3 l~ l t &E } v2 t' 3

1 as 1

3 t llM$ b e.r- { o 4-s 4 l.-u{., e h f =

)'

B-10

Principal Design Features of-On-Site Dans Date: June 1982 1. Licensee (Owner) Texas Utilities Generating Co. 2. Plant name Comanche Peak Dam name Squaw Creek Dam NRC Docket No. 50-445/446 3. Location: State Texas County Somervill _ miles free ~ 4. Downstream population centers Name Glen Rose Populati,on 1,550 (year 1970) Distance 4.5 mi 5. Rad. Hazard (Cat. I): No

Inundation Hazard (L. K, H).

6. Dam Characteristics: Purpose Normal cooling water Elevations: 3 Type Rockfill- , Top 796'~ Height 150' Spillway 775' Length 4360' Nom. Pool 77 o Crest Width 20' Max. Pool van 7 Slopes 3:1 Freeboard 5.3' 7. Hydrology: Drainage area 64 sq mi ISurfacearea Storage: nomal 152,000 acre-ft Maximum - Spillwy type Ogee (service), Open channel (emergency), 783' ms1 Discharge Cap. 22,500 cfs (service) 108.600 cfs (emergency) 8. Year construction started completed 1980 1 9. Licensed by T.vae n ne. n< wat r n <nnrent om 10.' Regular inspection: According to the National Dam Safety Inspection Program by the Texas Dept of Water Resources for the COE

11. COE Inventory Reference #

12. References SER Sec. 2.4, FSAR Sec. 2.4, 2c5.6

13. Comments i

Prepared By: B-ll

2 i };l[ fj_ E ' l' 1 U.'; l! -{+d-I 1 l- ', ! "a.:,.. I A. .'f I t i I I m $ !f j ) P t r[II nd i n s.: 'r L .e .:s.t.., _ a, l

a.,

l

. h.

'h![Ng l'l i o c,

..e sl "I.I @m l-J i

m il 8- / 1 1Is i ,'i ~ li

• t i

{ $1l l = u $/ 82 T 2 1

• R, i s S I

.I o .i + (A.. ...e..,11 i. i, 1 f' '*4.- l 8 i l ro. >1 a .i.< a i 5 t l! l5 bIr'I I 8 J ~ ljg u-IL '! : l i [ i) l 22 f g!f.l y !,. i 7 tf 3 c i I !) dhN'k'!0h b i'Irii

• i

_.[.i'Q.n: I, p 211}Ill l - ( : h,% p%y.f.,-l,t. &J.';4.'.I: ;'p 0+ . fi h!Jl dI ~ t j I '

?

r ..ey I I I I ,J .: k f l " 'g '4, }:i q 'tl t -! m u,. l i al n% I j;. u :.! i -l j' [. * ( 3,E,f!..'p. ', - I n li s q 4 s s g M. f,.= l I i

//,I C

Eh !.,_,/ / 8 I J ' ' [ 'r l }, h . j '1 \\ Hi 1 '. ./ w i l-[F;I l I i !I - 6 J. '\\ sd 'F 5 .-( l' \\ 1 l 3

j; o

i. \\ ( d 4

5 c

\\ 5:

[h 4

.1 ) Mj.! c VA 1-r i / e [ 1!9 4'\\ m, .~ i l}.; 7 .I g T i; 4 l> i i, it j I e e ,is IJti B-12

Principal Design Features of On-Site Dams Date: June 1982 1. Licensee (Owner) - Texas Utilities Generating Co. -2. Plant name Comanche Peak Dam name Safe Shutdown Dam ~ftRC Docket tio. 50-445/446 i 3. Location: State Texas County somervill __ miles from. 4. Downstream population centers flame Glen Rose Population 1.560 (in 1970) Distance 4.5 mi 5. Rad. Hazard (Cat. I): Yes

Inundation Hazard (L,'!f, H) None 6.

Dam Characteristics: Purpose Emeroency cooline water Elevations: Type Rockfill Top 796' Height 70' Spillway 769.5'- Length __1470' Nom. Pool 772.5' Crest Width a0' Max. Pool 790.5'- Slepes 9.51 Freeboard 5.5' 7. Hydrology: Drainage area 3.47 sq miles Surface area Storage: nomsl 367 acre-ft Maximum 457 acre-ft Spillway type Open channel Discharge Cap. 8. Year construction started completed May 1979 9. Licensed by

10. Regular inspection:

11. COE Inventory Reference #

12. References SER Sec. 2.4, 3.8, FSAR Sec. 2.5.6, 9.2.5-

13. Ccaments The Safe Shutdown Dam isolates an area of Squaw Creek Reservoir Prepared By:

B-13

ra.=, , r.ti :"* "f#* -- _--,a ,n 2,, -,ng, ...ya n ,e. ~- 1. i l T--~ eremou c.c <se ~.c... f.* em ~a,,,<- l T....- # a 1* M L'I .r. ..--4 .-::r- - \\Mv/ ty :-r.~ =A I secveu o.o e.. I -. ~ s =.un, g-rm

• i Z'a*;;;:.
• N h

.c c d 2.. ik."M 'A S E CTIO4....f,S f. e DIRE SECTIOMS Figure 3.9 Dresden B-14

.. ~ Principal Design Features of. On-Site Daris Date:. June 1984 1. Licensee (Owner) Corzonwealth Edison Co. ~2. ; Plant name-Dresden Dam name Spray Pond Impoundment-l flRC Docket tio. 50-237/249 l 3. Location: State Illinois ' . County Grundy _3_ miles'fror.: Morris 4. Downstream population centers llame Morris, Ill. Populati.on - 8,194 Distance 9 mi. H-5. Rad. Hazard (Cat. I): flo

Inundation Hazard (L, If, H) 6.

Dam Characteristics: Purpose flormal cooling water Elevations: Type, Earthfill Top-527' Height 17' Spillway Length flom. Pool 522' Crest Width Max.~ Pool. Slopes ___ 3:1-Freeboard 5' 7. Hydrology: I' Drainage area Surface area 1275 acres Storage: nomal '8,100 acre-ft Maximum 12.250 acre-ft Spillway type Discharge Cap. 8. Year construction started completed 1971 9. Licensed by

10. Regular inspection:

i

11. COE Inventory Reference f l '-

433 - 12. References FSAR, Region III Paul Pelke Embankment has failed in past and is a hazard to nearby school on the

13. Ccaments west. Spray pond is filled by water pumped from Dresden Island Reservoir.

L i PreparedBy: 4 B-15 + ,-e-r-t y, t w m www av-t-"- yw-w YP ---w ---e----

i gr-.. - -5: :.".' ""** . %_,ue::.:: =..-~ ~

a..*aA

-r_. e a p,,40(- W1.4..".. J \\.c =v.. g m.m "y. Id ' \\o..w..'.* lp ... ~. .~ a.... -: 63.- i I DAM SECTION ..T... I l a m -.-1 -es =: - t 88'"

3. '.8g.

A I g-y-u~ g 'n'.'* f i y a -. ru DIKE SECTION -..-$.. ~ 4.. , f. t c ,w -,. I i I _2s / n_ D-i i CREST DETAIL ALABAMA POWER COMPANY JOSEPN M. FARLEY NUCLEAR PLANT FINAL SAFETY ANALYSIS REPORT STORAGE POND EMBANKMENT CJtEST DETAll AND COMP ACTION DATA FIGURE 2B7-17 B-16

Principal Design Features of On-Site Dams Date: .in,.. im 1. Licensee'(0wner) Alaba:na Power Co.

2. ' Plant name Farley Dam name Category i Holding pand I-

~NRC Docket No. 50-348/364 l i 3. Location: State Alabama County Houston _, miles from l 4. Downstream population centers Name Population Distance 5. Rad. Hazard (Cat. I): Yes

Inundation Hazard (L. M', H) 6.

Dam Characteristics: Purpose Cooling towers makeup, emerg. Elevations: Type Homogenous earthfill Top 195' Height 55' Spillway -186' Length 3900' - Nonn. Pool 185' Crest Width 30' Max. Pool 192.2' Slopes 4:1, 3:1 Freeboard 2.8' ' 7. Hydrology: Drainage area 325 acres Surface area 100 acres Storage: normal 1570 acre-ft Maximum 2370 acre-ft Spillway type Discharge Cap. 2020 cfs

8.. Year construction started completed 1979 +

9. Licensed by

10. Regular inspection:

11. COE Inventory Reference #

12. References FSAR Sec. 2.4.8, 9.2.5

13. Comments Failure of embankment would drain right into Chatahoochie River.

Pond is filled by pumping from river. Prepared By: B-17

,mm se =a _. .nia ff,. '"L._ , N_"' "if'A te,, m --ti,12KiM?.Mu' w"-u s'm,* ** 't. / 5 K

• • ** =m-j e

i,,..._r._ _, m.~ ,u .6 %m 7-- m:.' *?*( A NW% , jf ..ee g ee.,,. mme'*) g ,it, 'e .r..-.. c. n* ~~ =a== "L -,. c.e. m... p

y_u,

• • les weise _.

7 ~ ** 1**:P* .M7a2(du" pegg CD ) [g

1. exsem - a n-es

_ g.y smwx

f. :e,r:::,:

N m s p 4 g m #L=,. *

• l ge\\

- 'vr 4 j f

u

-px s I l m] r/ l

1. )s c"

-, se-- i. ~. n a (_ {', '[.r:,:-- // l- ~3 . -bPJ

• • ~

}\\ ' " ~ ~ - - T.. _ _ _ _ _ _ _ _ 4.. l SHEARON HARRIS NUCLEAR POWER Pt Carolina Power & Light Company Tren CAL accrsow m e.w FINAL SAFETY ANALY$l$ REPORT MAIN DAM PROFILE 8 TYPICAL SECTION FIGURE 2.5.6-2 REF DWG: CAR 2167 G 6248 (REV 2)

== ... ~ . - - - -~ Principal Design Features of On-site Dans Date: June lon?

1. ' Licensee (0wner)

Carolina Power & Liaht ca. 2. Plant name (Shearon) Harris ' Dam name Main Dam flRC Docket flo. 50-400/401/4021403 l 3. Location: State North Carolina County Wake _ miles froc: l 4. Downstream population centers-llame Lillington Population 1242 Distance 15 mi. 5. Rad. Hazard (Cat. I): No/Yes

Inundation Hazard (L. M', H) not oy ranction out by design 6.

Dam Characteristics: Purpose Aormal cooling water Elevations: Type Ro'ckfill Top 200' Height 108 Spillway 22T ' Length 1550' Norm. Pool 22G' Crest Width 25' Max. Pool 2d9' Slopes 2:1-Freeboard 11.l' 1

7. -Hydrology:

Drainage area 71 sq miles Surface area Storage: nonnal 70,000 acre-ft Maxinum 270,000 acre-ft Spillway type-Ogee'(2) Discharge Cap. 14,190 cfs 8. Year construction started completed 1979 t

9. ' Licensed by

+ 10.' Regular inspection: Contains settlement monuments, piezometers and seepage monitors. Monitoring frequency unknown. 'll. COE Inventory Reference # L12. References FSAR Vol. 4 Sec. 2.5.6, Vol. 3 Sec. 2.4 i

13. Ccmments r

Prepared By: .9 I B-19

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• * * * ~

M 4 i 4.ama sue,a.i. Tve cw sectiow .TAcf.co?ptu St*00 rsee SHEARON HARRIS NUCLEAR POWER PLANT Carolina Power & Light Company FINAL SAFETY ANALYSIS REPORT AUXILIARY DAM -PROFILE AND TYPICAL SECTIONS FIGURE 2.5.6-4 B-20

Principal Design Features of On-Site Dams Date: June 1982 1. Licensee (0.vner) carolina power and Liaht ca. 2. Plant name (wa renhta rris Dam name Auxiliary Dam i l NRC Docket-No. 50-400/401/402/403 I 3. Location: State North Carolina County Wake _ miles free 3 4. Downstream population centers Name Lil". ington Population 1242 ~ Distance 15 mi 5. Rad. Hazard (Cat. I): Yes

InundationHazard(L.M.H) 6.

Dam Characteristics: Purpose Emergency cooling water Elevations: 1 Type Rockfill Top 260' - Height 73' Spillway 252' Length 4060' Norm. Pool 252' Crest Width 20' Max. Pool 256' Slopes 2.5:1 Freeboard 4.0'

7. -Hydrology:

Drainage area 2.43 sq miles Surface area Storage: nomal 5250 acre-ft Maximum 7,200 acre-ft Spillway type Ocee Discharge Cap. 5030 cfs 8. Year construction started completed 1979 t 9. Licensed by

10. Regular inspection:

Settlement monuments and piezometers. No seepage monitors. Monitoring frequency unknown, i s.

11. COE Inventory Reference f

12. References FSAR Sec. 2.5.6,~2.4 l

13. Comments Auxiliary Dam isolates an am of Main Reservoir i

Prepared By: B-21 4 , ~ -,m. r,- -,n-------n,

• O

~ r te '4 n a 9 e io W 6 ov l s"0 E m p - la / e o m' R T'2 o" r NU l "O _T 7 "3 l I707 o t iN 't8 a-e'0 v5 )6 E7 0"3 l d E' c, am oo= g Rr d Yg, f fo s p i G e o f pi r r' 4 r oa ip / TV R b "6 % fe 4 R e f, ,l i o k $n '6 D o G'- l lf/ 4 i d i e y it t a hWi nl x4 ia d r o c r dy c o t el t e H lly s n* r oO 5 i t t'5 A 1 s f a n v0 + '5 a o le7 la r E min) de i oft W e n k r( e D f "7-m d f s le e oe b p r '0 e t l i6t i r s ts u oa s i TV7S e u t i e r d W kn n s la u B n f'e ia i e r g T dD e r o u ia le, he n s o3 a u rT r c Ce [ > D s ? n 1 ,\\ /"'o o d D o n t lS o N t S E o t G N "O E L 1 f 'O- '5 1 5 ;crm CZ

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Principal Design Features of On-Site Dams Date: June 1982 1. Licensee (Owner) Comonwealth Edison Co. 2. Plant name LaSalle Dam name Cooling Pond Dike llRC Docket flo. 373/374 3. Location: State Illinois County LaSalle _ miles from 4. Downstream population centers l !!ame Population Distance 5. Rad. Hazard (Cat. I): fio

Inundation Hazard (L. If, H) 6.

Dam Characteristics: Purpose Normal cooling water Elevations: 707' Type Homogenous earthfill Top Height 40' Spillway Length 37,942' ttorm. Pool 700' Crest Width 12' ltax. Pool Slopes 3:1 Freeboard 7. Hydrology: Drainage area Surface area 2,058 acres Storage: normal 31,706 acre ft liaxi=um Spillway type Discharge Cap. 8. Year construction started completed 82+ 9. Licensed by

10. Regular inspection:

11. COE Inventory Reference #

12. RefererJces FSAR Sec. 2.4, 2.5.6

13. Comments cooling pond contains an excavated depression for emergency cooling water purposes.

Prepared By: B-23

M ? i i x g s 1 'I : id t '3 I I I x 1 /s ~ 'N l' s c _ D#A"] /. ; 'g k h{ m t / i u 4 / i g 3 1 .g U f I. I'* t l A I ~" l \\ lq /\\ e s!! 3: / 1 / ' / I t /

• ,5

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sim, s

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• l I

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'Y' 0 4 ,IN t& 'R w 2W w ;,,21 i5 i iI i i i i 0 B-24

Principal Design Features of On-Site Dams Date: June 1982 1. Licensee (Owner) Duke Power Co. 2. Plant name McGuire Dam name Standby Nuclear Service Water Dam NRC Docket No. 50-369/370 3. Location: State Noeth Carolina County-Lincoln _ miles from 4. Downstream population centers Name Population Distance S. Rad. Hazard (Cat. I): Yes

Inundation Hazard (L. M','H) 6.

Dam Characteristics: Purpose Emergency cooling water Elevations: Type Homogenous earthffll Top 748.5 Height 60' Spillway Length 1260' Norm. Pool '740' Crest Width 36' Max. Pool 742.5' Slopes 2.5:1-Freeboard 6.0' 7. Hydrology: Drainage area 171 acres Surface area Storage: nomal 578 acre-ft - Maximum Spillway type Gischarge Cap. 8. Year construction started completed 1980 t 9. Licensed by

10. Regular inspection: Piezameters-weekly (6 mos.), monthly (6 mos) " quarterly thereafter until 1 year after initial unit 1 operation". -Vertical and Horizontal movement and V. Notched W!er,(seepage). Monthly (6 mos) and quarterly until 1 year after mi 6 i vi,.. u v.

11. COE Inventory Reference f

12. References FSAR Appendix 2G

-13. Comments Monitoring frecuency after 1 year after initial unit 1 operation is unknown. Prepared By: B-25

t Typical cross-section not available s B-26

=_ Principal Design Features of On-Site Dams 'Date: June 1982 1. Licensee (0wner) Duke Power Co.

2. ' Plant'name McGuire Dam name Wastewater Collection Basin Dam NRC Docket No. 50-369/370 3.

Location: State North Carolina County Lincoln ___ miles free 4. Ocwnstream population centers Name Populati.on Distance S. Rad. Hazard (Cat. I): .No

Inundation Hazard (L M', H) 6.

Dam Characteristics: .i Purpose Wastewater Storage Elevations: Type un-aa.aa. e...+hr41, Top 697' Height 32' Spillway Length 100' Norm. Pool Crest Width 20' Max. Pool . Slopes 2:1 Freeboard 7' 7. Hydrology: Drainage area 171 acres Surface area Storage: normal Maximum Spillway type Discharge Cap.

8.. Year construction started completed 1980 t 9.

Licensed by-

10. Regular inspection:

. 11. COE Inventory Reference #

12. References FSAR App. 2G

- 13. Cam:ents Prepared By: B-27 --~e ,--m.. ,_m 7 --. =

640 - ~ I 9 5 61 / 11

• U 620 -

COOLING POND p 3.5 g ~ ) { 600 - b OR (8) @ 1R @ ORIGINAL GROUND SURF ACE ORIGINAL w GROUND SURFACE

., GL.'

500 - SEE NOTE VEFERE14e SEE FIGumE 2.5-46 FOR LOCATION CF CROSS SECTION F Ypt_ANATION 00 ZONE MATERIAL so, 20 4 0.. _80 g L, @ (p [MPERv!OUS F!LL SCALE IN FEET R AN00m r t LL SAND DRAIN @@h GRAVEL RIPRAP TOPSGIL s SEE0!NG FOUNDATION (Luc 5E SANO. Sitt AND riaN clavi CONSUT.1ERS POWER COMPA:1Y rouNOAT nN MIDLAND PLANT U:llTS 1 & 2 'C""' FINAL SAFETY ANALYSIS REPOR1 Dike Section C

1. WHERE ZONE O MATERIAL OCCURS. THE CUTOFF TRENCH INTERCEPTS 20NEO

( AND PENE TR ATES 2 FEET INTO 20NE g (SK-C-125. Rev 2) FCNE O W AS ASSUME 3 AS SHon1 FOR CONSERVATISM IN SLOPE STABILtTV FSAR Figure 2.5-53 ANALYSIS. l

2. FOR DESCRIPTION OF THE 8 ZONES l

5EE FIGURE 2.5-19. 1/91 l'* 21

• I' " I I

l

~ Principal Design Features of On-Site Dams Date: June 1982 1. Licensee (Owner) Consumers Power Co. 2. Plant name Midland Dam name coolina Pond Dike NRC Docket No. 50-329/330 3. Location: State Michioan County Ahdland Jo_ miles from b4'idLteid 4. Downstream population centers Name Populati.on Distance 5. Rad. Hazard (Cat. I): No

Inundation Hazard (L M', H) __

6. Dam Characteristics: Purpose Normal cool'ing water Elevations: Type Earthfill Top 632' Height 28' Spillway-627' Length Norm. Pool 627' Crest Width Max. Pool 627' Slopes ~3:1, 3.5:1 Freeboard 5.0' 7. Hydrology: Drainage area Surface area 880 acres Storage: normal 12,600 acre-ft Maximum 12,600 acre-ft Spillway type Discharge Cap. 8. Year construction started completed 1978 9. Licensed by; '10. Regular inspection:

11. COE Inventory Reference #

12. References FSAR

13. Comments ' The cooling pond contains an excavated depression for emergency cooling water purposes.

Prepared By: B-29

RIP R AP ._ io _. l eTOP OF 40A0 , [i ~ NORW AL wS EL.250.0,AM. WS EL 2S S.0* CREST EL 285.0' g FILT ER S gCMimedEY ORAin e COMPACTED COMPACTED " ""P [ EARTH EARTH FILL WMO 4tLTER DR AIN 7 FILL f A swav=wav-avervaveamverv ave 4v aves TYPIC AL CROSS SECTION e se see se Ie e e t l l l Sta4E. FEET DAM AND SPILLWAY NORTH ANNA RIVER NORTH ANNA POWER STATION UNITS I AND 2 B-30

k Principal Design' Features of On-Site Dams ~Date: June 1982 'l. Licensee (0wner) Virainia Electric Power Co. 2. Plant name North Anna Dam name North Anna Dam fiRC Docket No. 50-404/405 CountyN*DI*'O __ miles from l - 3. Location: State Virginia P / l 4. Downstream population centers flame Populati.on Distance-5. Rad. Hazard (Cat. I): No/Yes

. Inundation Hazard (L, M', H)

Not oy runction out 6. Dam Characteristics: by design 1 Purpose' Nomal cooling water Elevations: Type - Homogenous earthfill Top 255'- Height 95' . Spillway Length 5000' Norm. Pool 250' Crest Width 30' Max. Pool 255'~ Slopes 2.5:1 Freeboard 10'

7.. Hydrology:

Drainage area 343 sq miles Surface area. ' Storage:. nomal 305,000 acre-ft-Maxi.:um 373,000 acre-ft Spillway type concrete gravity j_ Oischarge Cap.- 105,000 cfs~ 8. Year construction started completed 1975 t 9. Licensed by-

10. - Regular inspection:

Horizontal and vertical displacement, seepage, pore ~ i j pressure. Monitoring frequency unknown, i VA 17702

11..COE' Inventory Reference #

12.. References _FSAR Sec. 2.4, 3.8.3

13. Comment,s This reservoir provides nomal cooling and make-up water to the 1-standby service reservoir.

Prepared By: B-31 i w-ee p-+,, w me-.-m. .v,- -,---,e--.- ,e ,6 a. ---w-~--n--e-+- --m. w-- m m- .a -u---.,

i l {, CREST 20' i J O']}.10' CR EST ELEV. 320 4 - O.7 DUMPED ROCK SLOPd PROTECTION TOP OF CORE ELEV. 3ta'S [3?, ' " ~ **'~%, g M AXIMUM W.S. ELEV. 315' .. - o .. d* _ BOTTOM . g# ' ] [ELEV.305, p COMPACTED ROCK FILL m ll s o.'-,y +- 's a d* I3

1. ~

ELEV. 2' SELECT EARTli LINING ., o,,s'$,* qi.i l dlo.'*3 \\ [ VARIES h A 2' COM PACTED COA RSE-COMPACTED SAND FILTER FILTER BLANKET COMPACTED COARSE FILTER 2' COMPACTED SAND-- FILTER BL ANKET CROSS SECTION OF DIKE SCALE I " = 2 0' IMPOUNDING DIKE SERVICE WATER RESERVOIR NORTH ANNA POWER STATION UNITS I AND 2

I Principal Design Features of On-Site Dams Date: June 1982 1. Licensee (Owner) Virginia Electric Power Co. 2. Plant name North Anna Dam name Service Water Dikes 1 & 2 NRC Docket No. 50-404/405 3. Location: State Virginia County __ miles froc 4. Downstream population centers Name Population Distance 5. Rad. Hazard (Cat. I): Y.s

Inundation Hazard (L M', H) 6.

Dam Characteristics: Purpose 9,rgency enn14ng wa,., Elevations: Type pne will Top 320' Height 2n* Spillway Length Norm. Pool un. Crest Width Max. Pool m. Slopes - 221. 121 Freeboard 5.0' 7.

Iydrology:

Drainage area 9 acres Surface area Stcrage: nonnal gn 2ce..o Maximum Spillway type Discharge Cap. 8. Year construction started completed 9. Licensed by

10. Regular inspection:

Horizontal and vertical disolacement. s. nano. Monitoring frequency unknown.

11. COE Inventory Reference f

12. References FSAR Sec. 9.2, 3.8.4.

13. Ccmments Service Water Dikes 1 and 2 impound a separate reservoir which obtains make-up water from Lake Anna.

Prepared By: B-33

i Typical cross-section not available ( B-34 ~--- -.n,

Principal Design Features of On-Site Dams Date: June 1982 i 1. Licensee (0wner) Duke Power Co. 2. Plant name Oconee Dam name Submerged Dam flRC Docket No. 50-287-3. Location: State South Carolina County _ miles from I-4. Downstream population centers Name Population Distance 5. Rad. Hazard (Cat. I): Yes

Inundation' Hazard (L. K. H) unn.

6. Dam Characteristics: Purpose nnero.ncy ennlina wa+.r Elevations: Type Top Height Spillway Length Norm.. Pool Crest Width Max. Pool-Slopes -Freeboard-7. Hydrology: Drainage area Surface area -Storage: nonnal Maximum Spillway type Discharge Cap. 8. Year construction started completed 9. Licensed by i

10. Regular inspection:

t 1

11. COE Inventory Reference i

12. References 13.

Comments n- < enim e.. ...,, nr i.6. v.,..--,..w sy, 6. y=- n,_ and Little River Dam. l I Prepared By: B-35

k EMBANMMENT 2.S* SOIL-CEMENT 25' E L. VARIES 167.00 MAX. 65.T5 MIN ) i NOR MAL M AX. OPE R. \\ w S. EL. 4 9.0 \\ r EL. VARIES 3 TOP SOIL th ,.vanig s_ 50' - 4 5'.,. \\ t. 1 1 SEE DING ,12,. 30.0-35.0 gg Sc o ig ~ -- . BERM ( REllEF wtLLS - n _- .~2 0' #i?, 2 5 - - f, yp{n =e 4 rl K4SPECTION. \\,WS EL.25 S gL 33 g $= $AND CHIMNgy ROAD i _L TOE INSPECTION ROAD-12' , 't_7--- h 4 COMPACTED CLAY flL L .10lTCH -f _. 8 ' ' Oq g . _' t i SAND DRAINAGE BL ANKE T

• 1 19E DR AIN

\\ (e O' ' lNSPECTION TRENCH t TOE DlTCM' TYPICAL SECTION THROUGH EMBANKMENT SCALE;l**30' CD I(.a CD NOTE: SECTION SHOWN REPRESENTS TYPICAL SECTION. SAND ORAINAGE BLANKET AND TOE DRAIN APPLIES TO APPROXIMATELY 6%or-EMSANkWENT FERIMETER FC R MORE DETAILS OF VARI ATIONS ' t, IN THIS CROSSECTION SEE FS A R. Dent SECTION 2.5.6. I .-STABILI2ED ROAD 12 I* ~!1# yNORMAL M AX. OPER. l ! - E L. 5 2.0 w.S.EL.49.0 52- -- 2.5* SOIL-CEMENT 7._,,... , //, ' ' ' I \\ MIN. OPER. W S. EL. 25.5 2': i r ,..' %i SOUTH TEXA5 PROJECT - n.;)$ =~~ UNITS 1 & 2 7 y COMPACTED CLAY FlLL ' '* E00LissG R[5tavo]g, TYPIC AL SECTION THROUGH DIKE resNamY ase intaron otrt: I SC ALE : l"= 30' riQ tt 4.8-3

~. Principal Design Features of On-Site Dams Date: June 1982 1. Licensee (Owner) Houston Lighting and Power Co. 2. Plant name' South Texas Dam name Cooling Pond Embankment NRC Docket No. 50-498/499 3. Location: State Texas' County Matagorda _ miles from i 1-4. Downstream population centars Name' Population ' Distance 5. Rad. Hazard (Cat. I): NO

InundationHazard(L,M',H) 6.

Dam Characteristics: J Purpose-Normal cooling water Elevations: Type

r. +hr4ti

' Top 66' Length' ~ Spillway 49.5' Height ans + Norm. Pool 49' Crest Width 16'= . Max. Pool 51' -. Slopes 2.5:1, 3:1 Freeboard 15' 7. Hydrology: Drainage area' Surface area 7.000 acres Storage: nonnal. 200,000 acre-ft-Maximum 220,000 acre-ft. Spillway type ng.. e i u 4.,,,,, +. Discharge Cap. ., nnn,.<, 8. Year construction started completed - 9. Licensed by

10. Regular inspection:

Piezameters. seeoaae monitors. vertical and hnri7nntal movement. Monitorino frecuency unknown.

11. COE Inventory Reference __f i

12. References FSAR Se-2.4. 2.5.6

13. Ccmments Design basis flood will cause embankment to fail. Surrounding area is a. barren flood plain. Cooling pond filled by Colorado River by pump.

[. L Prepared By: B-37

1 j e. _m A. -~ wma f=, de g~r. 2.,... a= ** g~ c~- w %.vp!~~. -s g.,,. --. nn g;, ,v.,,, -w.,. t e wt.

• n

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m. m

-- ---- -- %. ew.*.~.'"" '*q,--_*** ma. f"** - = = s.- .( ~ e,s. M.C" .'*""L*=".".8d ^~ - --..== r= w.. .m typeCat stCTICN - NCATM Cau sostu canoties tistf ast a sas te vtR$lt C. Sunaste WWCtta t if atige Typ tal Lecties W ta Ca. Figure 2.M H ~ ,NEM%- .o a VM+RWc.c. i yd...m.. p* a. = =w= ..e.m,, .f.1 _ _.. _. aa...... m.-- = _gja ## e t - --..usunu M /- "* *~J, l .~ ~' c. .-s~ ~ ~ ~. - a...a.--..

• a' A narune q

~ l ,s u .e i = -.. TYPICAL SECTION - SOUTM D a ns .e er sr ? .se - . se g & a. M b . 71.**E. ME i. _ _ w, - gg% y#jE-a-rmnan _.1. g m _L _ _ g t--- 00. $'V .eos 3.f 4 mt.t.s / igg Me 40 c.e 40 =e 3D ED 6 e a .o 40 80 a0D 43 G 40 9.Staett.m.Ou Clefteves. Pitt antM.SNT f auGilf,1970 TYPICAL SECTION-EAST DAM l SSVTWCaA0LisaELECTast& talte viesit t leaudE A 40CLIat Stats 04

• *i. al f acti?* I4.t 3"
• 4 a.r. 2.1-1 )$

B-38

Principal Design Features of On-Site Dams Date: June 1982 South Carolina Electric and Gas Co. 1. Licensee (Owner) 2. Plant ciame Summer Dam name North-West. South & East Dams NRC Docket No. 50-395 3. Location: State South Carolina County Fairfield _ mi?es from 4. Downstream population centers Ha:re Peak Populati.on 58 0 Distance 2 miles 5. Rad. Hazard (Cat. I): Yae

Inundation Hazard (L. M', H) 6.

Dam Characteristics: Purpose Emergency cooling water Elevations: Type Homogenous earthfill Top 438' Height 129', 98', 28' Spillway Length 3400', 765', 1150' Norm. Pool 425' Crest Width Max. Pool 430' Slopes 3:1 Freeboard 1.4' 7. Hydrology: Drainage area Surface area Storage: nomal _ 1,200 acre-ft Maximum 1,600 acre-ft Spillway type None Discharge Cap. 8. Yeat construction started completed December 1979 9. Licensed by

10. Regular inspection:

Vertical and horirental movament. niernmatort_ c1nna stability. drains. Monitorina frecuency unknown.

11. COE Inventory Reference f

12. References FSAR Sec. 2.4, 9.2.5 7

13. Comments These 3 seismic Category I dams isolate an arm of Frees Creek Reservior.

I Prepared By: B-39 l

f .i._ g; y i. 52 g a gf E E. 4 / I-gg4 s ~ a = f' 5% 3' E 3 x$t 8 : ..y/ r E 0 *5 g e j i e E U a U j j e ko c a I f e- .T l g r l I s ll f ' [' s s I t t } r i f ,5 ~ I m/ e -4 '1

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f

~ 0 G t 0 ( u s I-o < I 6 Mml g 1 ~ T E J I V I j\\ w 's b b \\ 1 ,.\\ 2 a L s e g 1, .' E 1 t o $o 1 n (M

• ow Ea M

E-D e a x I e d e d at 4 # e, I = 4 bE 2 ; F ts o l 9 /JX Of f "4 J ') _J-V El B-40

Principal-Design Features of On-Site Dams s Date: June 1982 1. Licensee (Owner) Kansas Gas & Electric Co. 2. Plant name Wolf Creek Dam name Main Dam NRC Occket No. 50-482 3. Location: State Kansas County Coffey __ miles free 4. Downstream population centers Name Population Distance 5. Rad. 'iazard (Cat. I): No

Inundation Hazard (L, M',

H) 6. Dam Characteristics: Purpose Normal cooling water Elevations: Type n. ..n., e.. +w,411 Top 11nn' Height inni Spillway innn' Length 12.260' Nom. Pool inn 7' Crest Width 28' Max. Pool 1095' Slopes 3:1 Freeboard 5.0' 7. Hydrology: Drainage area 27.4 sq miles Surface area l, Storage: nomal 13 3 ' gan 3r,...r, Maximum Spillway type inn' no.. re. ,,4r.) cnn' nnon r,,, rom. n) Discharge Cap. gn;n3g <e g _x 4,,,,. ) 8. Year construction started completed 1982 + 9. Licensed by

10. Regular inspection:

Pore water cressure. settlement. Diezameters. and horizontal movement is monitored as per Rec. Guide 1.70.

11. COE Inventory Reference i

12. References FSAR Sec. 2.3, SER Sec. 2.4.

13. Comments The non-seismic Category I reservoir is fomed by the Main Dam and Saddle Dams I through V.

Prepared By: l B-41 1

I Typical cross-section not available i i B-42

Principal Design Features of l On-Site Dams Date: -June 1982 1. Licensee (Owner) Kansas Gas & Electric Co. i 2. Plant name Wolf Creek Dam name Saddle Dam I throuah V NRC Docket No. 50-482 3. Location: State Kansas -County Coffey _ _ miles from 4. Downstream population' centers l Name Populat1.on Distance-5. Rad. Hazard (Cat. I): No

Inundation Hazard (L, M', H) 6.

Dam Characteristics: Purpose Cooling lake retainers Elevations: Type Homogenous earthfill Top 1100' Height 5' - 38' Spillway um.. Length Norm. Pool 1087' Crest Width Max. Pool 1095' Slopes 3:1 Freeboard 5.0' 7. Hydrology: Drainage area 27.4 sq miles Surface area [ Storage: normal Maximum j_ Spillway type None Discharge Cap. 8. Year construction started completed 1982 1 9. Licensed by

10. Regular inspection: Settlement monuments only. Dam No. 4 also has piezameters.

Monitoring frequency unknown.

11. COE Inventory Reference #

12. References FSAR Sec 2.3

13. Comments All but Saddle Dam #4 are founded above elev. 1087' which is the normal water level. These dams act only to retain the reservoir during severe flooding. See also Wolf Creek Main Dam.

Prepared By: l B-43 l

-, - m -;" R d JI==- _2. _ __b_. _' ~~ x f_ w-- f -- 1 i ., 1

1. . I_ w I

WOLF CREEK GENERATING STATION UNIT NO. I FINAL SAFETY ANALYSIS REPORT FIGURE 2.5-117 TYPICAL SECTION - UHS DAM B-44

Principal Design Features of On-Site Dams Date: June 19e 1. Licensee (Owner) Kansas Gas & Electric Co. 2. Plant name Wolf Creek Dam name Submerged Category I Cooling Dam NRC Dockat No. 50-482 3. Locatfoa: State County Coffey Kansas _ miles from 4. Cownstream population centers Name Population Distance 5. Rad. Hazard (Cat. I): Yes

Inundation Hazard (L, M', H) None 6.

Dam Characteristics: Purpose Emergency cooling water Elevations: Type Homogenous earthfill Top 1076' Height 18' Spillway um Length 1700' Norm. Pool ino7 Crest Width 20' Max. Pool Slopes 4:1 Freeboard 7. Hydrology: Drainage area Surface area 95 acres Storage: nonnal Maximum Spillway type None Discharge Cap. 8. . Year construction started 9/78 completed I 9. Licensed by

10. Regular inspection: Lateral movements, seepage and sedimentation buildup.

Monitoring frequency unknown. 'll. COE Inventory Reference f

12. References FSAR Sec. 2.3 i

L13. Comments Submerged Cateqory I Cooling Dam is within the on-site Main Reservoir. f Prepared By: i B-45

Appendix C Principal Design Features of Uranium Mill Tailings Dams Located in Non-Agreement States Bear Creek Uranium Mill Moab Uranium Mill Fed. American Partners Uranium Mill Shirley Basin Uranium Mill Gas Hills Uranium Mill Shootering Canyon Uranium Mill Highland Uranium Mill Split Rock Uranium Mill Lisbon Mine and Mill Sweetwater Uranium Mill Lucky McGas Hills Uranium Mill White Mesa Uranium Mill i C-1

Principal Des ~ign Features of Uranium Mill Tailings Dams Date July 1982 1. Licensee (0wner) Rocky Mountain Energy Co. (Bear Creek Uranium Co.) 2. Mill Name Bear Creek Uranium Mill Dam Name

3. -NRC Docket #-

40-8452 Converse 4. Location: State Wyoming County 5. Dam Characteristics: 20' Type Earthfill Crest Width ) Height 60' Slopes '2:1, 3 I Length 1500' Freeboard 10.0' Present top elev. 5160 Proposed final elev. uS" tovesann M,.,c.,, *** '~n, seen Typical Cross-Section - p' z t 'L f s'. sw 2' wett. m s ,3. C,&A1 (M4A""' ,'ss*yl<* ,w uns. und 2 6. Hydrology: gj Surface area 26 acres Storage: normal 2770 acre-ft max. 3570 acre-ft 7. Year construction started stage 1, 1977 completed stage 2, 1981 8. Regular inspection Daily inspection for any release of radioactive materials. 9. References Chen and Associates Construction Reports Feb. 2, 1981 and Aoril 21, l~ 7fs. ) -10. Comments Before the addition. slopes were 3:1 and 2.5:1, they now are 2:1. Licensee will raise the dam to _5180' in 1983. Prepared by C-2

Principal Design Features of Uranium Hill Tailings Dams .Date July 1982 1. Licensee (0wner) Federal American Partners 2. Mill Name Fed. American Partners Uranium Mill Dam Name Tailings Dam No.1 3. NRC Docket g 40-4492 4. Location: State Wyoming County Fremont 5. Dam Characteristics: Type Homogenous earthfill Crest Width 20' Haight 49' Slopes 3:1 Length 980' Freeboard 5.0' Prasent top elev. 6445 Proposed final elev. 6445 2. utsasat ggcag Typical Cross-Section warr rNNc'n3 i PR E'ViouS t SudKHEuf 3 (cetent.tv.t EAntuetLQ l 6. Hydrology: MFi l l Surface area 23 acres t Storage: normal max. 419.2 acre-ft

7. - Year construction started completed 1978 i

8. Regular inspection Daily visual inspection (documented) 9. References F. M. Fox and Associates " Proposed Extensions of Tailings Dams 1 & 2" May 5, 1978

10. Comments This pond is used for storing fluids which are pumped from tailings pond No. 2 (see next page). No more raises are planned.

Prepared by C-3 L

Principal Design Features.of Uranium Mill Tailings Dams Date July 1982 1. Licensee (0wner) Federal Americal Partners 2. Mill Name Fod. American Partners Uranium Mill Dam Name Tailinas Dam No. 2 3. NRC Docket # 4n 4407 4. Location: State Wyomina County Fremont 5. Dam Characteristics: Type Hemocanous earthfill Crest Width 20' Height 70' Slopes 3:1 Length Freeboard 5.0' Present top elev. Asin Proposed final elev. 6510' to' ' sco' LAfsTREAH DOWM4rACAN

corsm, Edenvn

Typical Cross-Section t i ) 3 fi gviews t sss49enevr (c =w. u nu.) '"+' 6. Hydrology: 70 acres Surface area Storage: normal max. 7. Year construction-started completed io7m 8. Regular inspection Daily visual inspection (documented) 9. References F. M Fnv and acenciatoe: "Ravicinn nf noeinn fnr T2414nne nam A?." .1n1,v 1 Q. 1Q7A Fluids are decanted to pond fl. No more raises are planned.

10. Cannents Prepared by L

Principal Design Features of Uranium Hill Tailings Dams Date July 1982 1. Licensee (0wner) Union Carbide Corp. 2. Mill Name, Gas Hills Uranium Mill Da.a Name 3. NRC Docket # 40-299 4. Location: State Wyoming County Natrona 5. Dam Characteristics: l Type Zoned earthfill Crest Width 12' Height 20' Slopes 3:1 upstream, 2:1 downstream Length Freeboard 5.0' Present top elev. 7nnas Proposed final elev. 7003' q,4 / h yput Typical Cross-Section b # "" *^" C,o H P M*.Mb [g D 1 c.L A 9 2-l 6. Hydrology: 6 " 3' Surface area 24 acres Storage: normal 300 acre-ft 420 acre-ft max. 7. Year construction started completed 1979 8. Regular inspection Daily, weekly and monthly documented insnartinne. 9. References Final Environmental Statement (NRC) July 1980. Dames and Moore Report Sept. 10, 1979.

10. Comments This pond is part of an underground ' disposal system and contains only liquids. One other disposal site is being reclaimed at present. All future disposal will be underground. Open pipe spillway at elev. 6998.

l Prepared by C-5 Y.

Principal Design Features of Uranium Mill Tailings Dams Date July 1982 1. Licensee (0wner) Exxon Minerals Corps. 2. Mill Name Hiohland Uranium Mill Dam Name 3. NRC Docket ! 40-8102 4. Location: State Wyomino County Converse 5. Dam Characteristics: Type Earthfill Crest Width 20' Height 125' Slopes 2:1 upstream, 2.5:1 downstream Length Freeboard Present top elev. 5250' Proposed final elev. 5250' 1 Io' z y,, f Typical Cross-Section P"" I D '_"_""'Ad , - - --s 's L rasc z 2. p N . casoms un 'y---.. g flLL / 3 r5ft N s g / coat pg, N s 6. Hydrology:

• *'t w w Surface area Storage: normal max.

920 acre-ft i 7. Year construction started completed 1981 8. Regular inspection 9. References Dames and Moore Report " Design of Centerline Constructed Height Increases" Oct 26, 1976 10. Comments Phase 2 of raising was completed in 1981 at elev. 5250'. No more raises are planned. C-6 Prepared by,,,

Principal Design Features of-Uranium 11111 Tailings Dams Date July 1982 1. Licensee (0wner) Rio Algom Corp 2. Mill Name Lisbon Mine and Mill Dam Name Lower Pond Dam 3. NRC Docket # 40-8084 4. Location: State Utah County Sare Juan 5. Dam Characteristics: Type Homoganous earthfill Crest Width 15' r Height 75' Slopes 1.5:1 uostraam. 2.E 1 dnwnstraam Length Freeboard 12.0' Present tcp elev. 6661' Proposed final elev. 6671' war'- uPsramt pga sen e Art Typical Cross-Section ,.f rsega. f~l L L 661Y t ?REvteus EstSMJdCT 6," - (ppEU. OLb) "f.- f l 6. Hydrology: Surface area "~~ w ~ k Storage: normal max. 19nn ar. r+ 7. Year construction started completed loni i 8. Regular inspection 9. References Dames and Moore Ronnrt "Prnnnead Raica n f I==- T= 414 aae nm o March 17.1981.

10. Comments A 55' upper pond dam also exists and would finw intn tha inwar nenr*

if it failed. Dam was raised by the downstream mathnd Nn mnra raiene are planned.

• E '
• C-7

Principal Design Features of Uranium tiill Tailings Dams Date July 1987 1. Licensee (0wner) Pathfinder Mines Corp. 2. Mill Name Lucky McGas Hills Uranium Mill Dam Name #4 Dam 3. NRC Docket # 40-2259-4. Location: State Wyoming County Fremont 5. Dam Characteristics: Type Zoned earthfill Crest Width 75' Height 125' (abe 94, SI@-e *sydlopes 3:1 (@; 2 5': 19-4 Length 2200' Freeboard 6.0' (n n * = HdQ Fresent top elev. 6243' Proposed final elev. 6256' . ~ n/ (rN S,

1. SH^'E

\\ DO*d'"A" upff5 TEAM / ri 6t, ~ gi Typical Cross-Section [j' (2; a \\ $

• r,%-

i genAP p 4. r reevioits b g/ cseauHur a\\ t s ,d' (waves) -

• ts i,f;f 5

t ~g a cuw 6!1E / \\ "N 6. Hydrology: W L;i,V44JeJ '{ Surface area i45 o c. (EL. 62 37) Storage: normal IMo ac M"'8).3**Glff 037) max. 4,000 acre-ft (elev. 6243) 7. Year construction started 1961 (198o '5') completed elev 6243', 1981 8. Regular inspection Weekly by the owner, monthly by a qualified mine engineer. l Daily visual inspections. 9. References Chen and Associates Soil and Foundation Investigation April 1978. " Staged Construction #4" June 12, 1981. 10. Comments Proposed final elev. is 6256' msl. Dams are situated in series at this mill, with plans for a total of 5 dams. l C-8 i

Principal Design Features of Uranium Mill Tailings Dams Date July 1982 1. Licensee (Owner) Atlas Minerals 2. Mill Name Moab Uranium Mill Dam Name 3. NRC Docket ! 40-3453

4.. Location: State Utah County Grand 5.

Dam Characteristics ~: 20' Type Homogenous earthfill Crest Width ~ Height Slopes 2.r :I s 2 4 :n Length 7600' Freeboard 6.0' Present top elev. 4osa Proposed final elev. 407s' .f on* g so' n n u3 y 8 i d ' t' Typical Cross-Section 2-i v 4oG' fag >6 s, snsurnfer N @trW SouTM +sAST i rRevrovs

• * = "

6. Hydrology: L Surface area Storage: normal max. f 7. Year construction started completed 1982 + 8. Regular inspection Monthly piezometer readings at 28 points. Daily visual and quarterly documented inspections, annual technical evaluation. 9. References Dames and Moore Report of Stability Analysis June 4, 1981. l

10. Comments Bordered by the Colorado River. Three seepage areas have been observed: one on Northern Western and Southern embankments. Dam raised by upstream method on N, S, E sides and by downstream method on west side.

Prepared by ( ~

Principal Design Features of Uranium Mill Tailings Dams Date July 1982 1. Licensee (0wner) Pathfinder Mines Corp. 2. Mill Name Shirley Basin Uranium Mill Dam Name #5 Dam 3. NRC Docket # 40-6622 4. Location: State. Wyoming County Carbon 5. Dam Characteristics: 20' Type Homogenous earthfill Crest Width Height 60' Slopes 2:1 upstream. 2.5:1 downstream Length 6,000' Freeboard 3.5' Present top elev. 7110' Proposed final elev. 7110' Trio' O.P5TREAM II[t Dov'35 N AH i Typical Cross-Section i--- N I ~ s raMe2 s-2 (CLA%4 $As4[g.d.(f piJb bAA"I \\,(^., MAse z N ~:.r. (etMsv 5Aie) N 'E;'t y u.m ,oco, 6. Hydrology: uron: ma Surface area 3300 acre-ft Storage: normal max. 7. Year construction started 1975 completed 1977 8. Regular inspection Daily visual inspections, weekly water levels and I monument measurements. and monthly of ernmater water levels 9. References Dames and Moore Report " Redesign Final Stage No. 5 Tailings Dam". Dec 3, 1976.

10. Comments Dam built by downstream method. Where height of dam is less than 30', no chimney drain has been installed. Dams are situated in series at this mill.

Prepared by C-10

Principal Design Features of Uranium Mill Tailings Dams Date July 1982 1. t.icensee (0wner) Petrotomics Co. 2. Mill.Name Shirley Basin Uranium Mill Dam Name 3. NRC Docket # 40-6659 Carbon 4. Location: State Wyoming County 5. Dam Characteristics: 50' Type Homogenous earthfill Crest Width 2.5:1 Height 75' Slopes Length 6,900' Freeboard 12' Present top elev. 7100' Proposed final elev. = = 71., *

1. Md DavJWitAEAN Typical Cross-Section d'AW 1i F o u.J t

2.c u m..nr TF t HJ gngetwS \\ D owaurs m..g \\ (# l 6. Hydrology: \\ m

tc e waa Surface area 160 acres Storage

normal max.

7. Year construction started 1963 completed 1980 8. Regular inspection As per Reg. Guide 3.11. 9. References Chen and Associates Construction Report and Drawings, Jan. 16,-1980. l l

10. Coments Do not know if future raises are planned.

Prepared by C-11 i

Principal. Design Features of Uranium Mill Tailings Dams Date July 1982 1. Licensee (0wner) Plateau Resources Inc. 2. Mill Name shnntaring canynn tiranium Mill _ Dam Name ~ 3. NRC Docket # an-Agon 4. Location: State tita h County narf4.,a 5. Dam Characteristics: Type Zoned parthfill Crest ~ Width Stage I - 80' Stage II - 20' l Height a s i omI), iis'(st.seI) S1 opes 91 Length Freeboard 13' Present' top elev. _4433' Proposed final elev. 4466' (Stage II) so' E .L_ff.11', 5t.y z ULP5rA EAM y p M $ng,A_n -Typical Cross-Section l .<w s c l4 y savet-2 a ^Y c..wes I w as s.aasas s comes GAMEL [M 43"' '~ :

• 6.

Hydrology: Surface area 68' acres (Drainage area - 222 acres) Storage: normal max. at elev. 4466', 2800 acre-ft 7. Year construction started completed 1980 8. Regular inspection Visual inspection every work shift 9. References Woodward-Clyde, Stage I Final Design report May 1979.

10. Coments Dam to be constructed in two stages -stage I to elev. 4433' and stage 2 to elev. 4466'. Tailings will not be placed against the dam until S ope ind'M*"5 tain be maniend.

l 56 6 E. P'"'~81"8 ed stage II. Mn3 9

• E "
• C-12

Principal Design Features of Uranium tiill Tailings Dams Date July 1982 1. Licensee (0wner) Western Nuclear Inc. 2. Mill flame ' Solit Rock Uranium Mill Dam Na.me 3. flRC Docket # 40-1162 Fremont 4. Location: State Wyoming County 5. Dam Characteristics: Type Earthfill Crest Width l Height 50' Slopes 5:1 up' stream, 3:1, downstream Length Freeboard 3-5' 6444' Present top elev. 6410' Proposed final elev. (a t10' c i ',JG6 Typical Cross-Section \\ t' "" A" coM i I

1. 5g4 t,u6 enswatars w,.

6. Hydrology: Surface area 6 300 x 10 ft3 (elev. 6444) 3 (eleV: 6 l Storage: normal 225 x 10 ft max. u,1v j 7. Year construction started completed-dee-enied inspecfi ns ; annua.1 -technical 8. Regular inspection Oah and 9 eler13 l evalvei.'on. 9. References D'Appolonia Construction Report, Feb. 1980

10. Comments Dam raised by centerline method usino coarser orained tailinas

-for fill. Final raise (tn olev_ 64441 octimated to be in 1990. Prepared by

i Principal Design Features of Uranium Mill Tailings Dams Date July 1982 Minerals Exploration Co. .1. 1.icensee (0wner) Sweetwater Uranium Mill Dam Name 2. Mill Name 40-8584 3. NRC Docket # Sweetwater NYUSI"9 County 4. Location: State 5. Dam Characteristics: Zoned earthfill Type Crest Width 50' 2I Height Slopes 6,300' prmefer 6do'x o= ) Freeboard 5.0' Length 6680 Present top elev. Proposed final elev. u.r3Aet n' 5 ou.a* reeA r1 Typical Cross-Section arm. C.o A f. 'p L SILW S 4 4 n a sw 3 mr s i se tt - curerr mw.a 6. Hydrology: 60 acres Surface area Storage: normal 2,000 acre-ft 2,500 acre-ft max. 7. Year construction started 1977 completed 1977 8. Regular inspection Quarterly piezometer readings and rewlar visual inspection for <aanace. crackino etc. Full annual insoection. 9. References Dames and Moore Reoort "Desian of Tailinas Retention Basin". March 16. 1977

10. Comments The bench on uostream side is for placement of tailings pipe and will eventually be covered.

Estimated life of dam before it is filled with tailinas is 11 vears. Prepared by

Principal Design Features of Uranium-Mill Tailings Dams Date July 1982 1. Licensee (0wner) Energy Fuels Nuclear Inc. 2. Mill Name White Mesa Uranium Mill Dam Name Cell 3 dike 3. NRC Docket # 40-8681 4. Location: State Utah County San Juan 5. Dam Characteristics: Type Homogenous earthfill Crest Width 20' l Height 42' Slopes 3:1 Length _ g,500 i Freeboard 5.0' Present top elev. 5610 Proposed final elev. 310

^

ufgrCCAN pevIdsTRCAM ~ Typical Cross-Section ~ espg.n.D EAE rH FIL8-i a 3 2 Exca vated g gg"- 6. Hydrology: 74//,;,p f.,, / Surface area each ceu to o c to Go ae. Storage: normal max. 7. Year construction started 1978 completed _1979 8. Regular inspection nailv mnnthly.and nnarterly dncomented insnections. Annual technical evaluation. 9. References D' Appolonia Enaineers Recort. Tailinos Managamant 9ystam. . luna 1979.

10. Coments Tailinos are deoosited in cells formed by successive downstream embankments.

Cell 1 funstraam) is used for avannratinn: call ? is being filiade Cell 3 dike is a safetv dike to retain snills frnm coll P. A total of 5 colls is planned. Dams do have spillways. Prepared by

f i ( . Appendix 0 Principal Design Features of Offsite Dams Associated with Nuclear Power Plant Sites l (Alphabetically by dam name) I l l 1

Principal Design Features of Off-Site Dams Dam Name - Chickamauga Dam Owners / Regulatory Agency - TVA/TVA Associated Nuclear Power Plants - Sequoyah and Watts Bar Relevance to Nuclear Power Plants - Normal cooling water Type - Gravity / Earth Year Completed - 1940 Height - 103', 5,800' long Capacity - 739,000 acre-feet River Impounded - Tennessee Principal Function - Hydroelectric COE Inundation Hazard - High COE Inventory # - TN6504 Dam Name - Conowingo Dam Owner / Regulatory Agency - Susquehanna Power Co/FERC Associated Nuclear Power Plants - Peach Bottom Relevance to Nuclear Power Plant - Normal cooling water Type - Concrete gravity Year Completed - 1928 Height - 98' Capacity - 310,000 acre-feet River Impounded - Susquehanna Principal Function - Hydroelectric COE Inundation Hazard - High COE Inventory # - MD97 Dam Name - Cowans Ford Dam Owner / Regulatory Agency - Duke Power Co/FERC Associated Nuclear Power Plant - McGuire Relevance to Nuclear Power Plants - Normal cooling water Type - Gravity / Earth Year Completed - 1963 Height - 115' Capacity - 1,092,429 acre-feet River Impounded - Catawba Principal Function - Hydroelectric C0E Inundation Hazard - High COE-Inventory # - NCl32 D-2

Principal Design Features of Off-site Dams Dam Name - Dardanelle Dam Owner / Regulatory Agency - Corps of Engineers / COE Associatec Nuclear Power Plants - Arkansas Relevance to Nuclear Povi. Plants - Normal cooling water Type - Concrete gravity Year Completed - 1969 Height - 66' Capacity - 486,200 acre-feet River Impounded - Arkansas Principal Function-Hydroelectric C0E Inundation Hazard - High l C0E Inventory # - AR162 Dam Name - Dresden Island Lock and Dam Owner / Regulatory Agency - Corps of Engineers /C0E Associated Nuclear Power Plant - Dresden Relevance to Nuclear Power Plants - Normal cooling water . Type - Concrete gravity Year completed - 1933 Height - 29' Capacity - 12,000 acre-feet River Impounded - Illinois Principal Function - Navigation COE Inundation Hazard - Medium COE Inventory # - IL2 i Dam Name - Frees Creek (3 dams) Owner / Regulatory Agency - South Caroline Electric & Gas Co./FERC Associated Nuclear Plants - Summer Relevance to Nuclear Power Plants - Normal cooling water Type - Year Completed - 1976 Height - Capacity - 400,000 acre-feet River Impounded - Principal Function - Hydroelectric j COE Inundation Hazard - COE Inventory # - (Built after 1973 inventory) i l I D-3

Principal Design Features of Off-Site Dams Dam Name - Guntersville Dam Owner / Regulatory Agency - TVA/TVA Associated Nuclear Power Plant - Bellefonte Relevance to Nuclear Power Plants - Normal cooling water Type - Gravity / Earth Year Completed - 1939 Height - 74' Capacity - 1,052,000 acre-feet River Impounded - Tennessee Principal Function - Hydroelectric COE Inundation Hazard - High COE Inventory # - All412 Dam Name - Harriman Dam Owner / Regulatory Agency - New England Power Co./FERC Associated Nuclear Power Plant - Yankee Rowe Relevance to Nuclear Power Plants - Upstream flood potential Type - Hydraulic Earthfill Year Completed - 1924 Height '.96' Capacity - 116,000 acre-feet River Impounded - Deerfield Principal Function - Hydroelectric COE Inundation Hazard - High COE Inventory # - VT25 Dam Name - Jocasse Dam Owner / Regulatory Agency - Duke Power Co/FERC Associated Nuclear Power Plants - Oconee Relevance to Nuclear Power Plants - Upstream flood hazard Type - Rockfill Year Completed - 1973 Height - 385' Capacity - 1,315,670 acre-feet River Impounded - Keowee Principal Function - Hydroelectric COE Inundation Hazard - High COE Inventory # - SC529 D-4

Principal Design Features of l Off-Site Dams i Dam Name - Lake Keowee Owner / Regulatory Agency - Duke Power Co./FERC Associated Nuclear Power Plant - Oconee Relevance to Nuclear Power Plants - Normal cooling water Type - Gravity / Earth Year Completed - 1970 Height - 70' Capacity - 500,000 acre-feet River Impounded - Keowee Principal Function - Hydroelectric COE Inundation Hazard - High COE Inventory # - SC706 Dam Name - Lake Robinson Owner / Regulatory Agency - Carolina Power & Light Co/FERC Associated Nuclear Power Plants - Robinson Relevance to Nuclear Power Plants - Normal and emergency cooling water Type - Earthfill Year Completed - 1900 -Height - 50' Capacity - 31,000 acre feet River Impounded - Black Creek Principal Function - Hydroelectric COE Inundation Hazard - High COE Inventory # - SC632 Dam Name - Lake Wylie Dam Owner / Regulatory Agency - Duke Power Co./FERC Associated Nuclear Power Plants - Catawba Relevance to Nuclear Power Plants - Normal cooling water Type - Earthfill Year Completed - 1900 Height - 57' Capacity - 282,000 acre-feet River Impounded - Catawba Principal Function - Hydroelectric COE Inundation Hazard - High COE Inventory # - SC687 l l l i D-5 I,

Principal Design Features of Off-Site Dams Dam Name - Little River Dam j Owner / Regulatory Agency - Duke Power Co./FERC Associated Nuclear Power Plants - Oconee Relevance to Nuclear Power Plants - Normal cooling water Type - Earthfill Year Completed - 1969 Height - 155' Capacity - 1,273,000 acre feet River Impounded - Little River Principal Function - Hydroelectric COE Inundation Hazard - High COE Inventory # - SC531 Dam Name - Montgomery Lock and Dam Owner / Regulatory Agency - COE/COE Associated Nuclear Power Plant - Beaver Valley Relevance to Nuclear Power Plant - Upstream flood potential Type - Concrete gravity Height - 35' Capacity - 57,500 acre-feet River Impounded - Ohio Principal Function - Navigation COE Inundation Hazard - Low COE Inventory # - PA128 Dam Name - Pickwick Landing Dam Owner / Regulatory Agency - TVA/TVA Associated Nuclear Power Plants - Yellow Creek Relevance to Nuclear Power Plants - Normal cooling water Type - Gravity / Earth Year Completed - 1938 Height - 91' Capacity - 1,105,000 acre-feet River Impounded - Tennessee Principal Function - Hydroelectric COE Inundation Hazard - High C0E Inventory # - TN7101 D-6

Principal Design Features of Off-Site Dams Dam Name - Rancho Seco Dam Owner / Regulatory Agency - Sacramento Municipal Utility District /FERC Associated Nuclear Power Plant - Rancho Seco Relevance to Nuclear Power Plants - Emergency cooling water Type - Earthfill Year Completed - 1972 Height - 50' Capacity - 2,850 acre-feet River Impounded - Hadselville Creek Principal Function - Hydroelectric COE Inundation Hazard - Low l COE Inventory # - CA825 Dam Name - Sherman Dam Owner / Regulatory Agency - New England Power Co/FERC Associated Nuclear Power Plants - Yankee Rowe Relevance to Nuclear Power Plants - Normal and emergency _ cooling water Type - Gravity / Earth Year Completed - 1927 Height - 110' Capacity - 5,540 acre-feet River Impounded - Deerfield Principal Function - Hydroelectric C0E Inundation Hazard - Low COE Inventory # - MA43 Dam Name - Vernon Dam Owner / Regulatory Agency - Connecticut River Power Co./FERC Associated Nuclear Power Plant-- Vermont Yankee Relevance to Nuclear Power Plants - Nonnal cooling water Type - Gravity /0ther Year Completed - 1937 Height - 60' Capacity - 222,000 acre-feet River Impounded - Connecticut Principal Function - Hydroelectric COE Inundation Hazard - High COE Inventory # - NH97 l l D-7

Principal Design Features of Off-Site Dams Dam Name - Watts Bar Dam ~ Owner / Regulatory Agency - TVA/TVA Associated Nuclear Power Plants - Watts Bar Relevance to Nuclear Power Plants - Upstream flood potential Type - Gravity / Earth Year Completed - 1942 Height - 105' Capacity - 1,175,000 acre-feet River Impounded - Tennessee Principal Function - Hydroelectric COE Inundation Hazard - High COE Inventory # - TN12102 Dam Name - Wheeler Dam Owner / Regulatory Agency - TVA/TVA Associated Nuclear Power Plants - Browns Ferry Relevance to Nuclear Power Plants - Normal cooling water Type CConcrete gravity Year Completed - 1936 Height - 60' Capacity - 1,071,000 acre-feet River Impounded - Tennessee Principal Function - Hydroelectric COE Inundation Hazard - High COE Inventory # - All411 D-8 E

I t Appendix E Uranium Mills Located in Agreement States 4 E-1 -)

Uranium Mills Located in Agreement States State Contact Uranium Mill Owner / Mill Name Colorado Mr. Albert J. Hagle, Director 1. Cotter Corporation / Radiation & Hazardous Waste Canyon City Mill Control Division Office of Health Protection 2. Homestake Mining Co./ Dept. of Public Health Pitch Mill 4210 East lith Ave.

Denver, Colorado 80220 3.

Union Carbide Corp./ (303 320-8333 ext. 6246 Uravan Mill New Mexico Mr. Alfonso Topp, Chief 1. Anaconda Co./ Radiation Protection Bureau Bluewater Mill Environmental Improvement Div. P.O. Box 963 2. Homestyle iiining Co./ Santa Fe, New Mexico 87504 Grants Mill (505) 827-5271 ext. 279 3. Kerr-McGee Nuclear Corp./ Ambrosia Lake Mill 4. Schio-Reserve Co./ L-Bar Mill 5. United Nuclear Corp./ Church Rock Mill f Texas Mr. David K. Lacker, Chief 1. Chevron Resources Co./ Bureau of Radiation Control Panna Maria Mill Texas Dept. of Health 1100 West 49th Street E Continental Oil, Pioneer Austin, Texas 78756 Nuclear /Conquista Mill (512) 835-7000 Washington Mrs. Nancy Kirner, Supervisor 1. Dawn Mining Co./ Radioactive Materials Ford Mill Dept. of Social & Health Services 2. Western Nuclear Inc./ Mail Stop LD-ll Sherwood Mill Olympia, Washington 98504 (206) 753-3459 E-2

I,", ' "" 388 u.s. nucle AR REcutATORv cOuuissioN

1. REPORT NUMBER (Asopieder DDC/

? BIBLIOGRAPHIC DATA SHEET NUREG-0965

4. TtTLE AN D SUBTITLE (A dd Volume No.. of sopenorrete)

2. (Leave Deank t NRC Inventory of Dams

3. RECIPIENT *S ACCESSIC.N NO.

7 AUTHORtSt

5. DATE REPORT COMPLETED George E. Lear, NRC Dam Safety Officer MouTs

[ve4R Owen 0. Thompson, NRC Deputy Dam Safety Officer Nov. 1 982 9 PERFORMING ORGANIZATION NAME AND MAILING ADDRESS (lactuar 2,0 Code / DATE REPORT ISSUED U.S. Nuclear Regulatory Commission wouTw lvaan Dam Safety Officer Jan. 1983 Mail Stop P-214 s ste,ve u nni Washington, D.C. 20555

8. Item wan&1

12. SPONSORING ORGA6/ ATION NAME AND MAILING ADDRESS (Include lea Cuoel U.S. Nuclear Regulatory Commission Dam Safety Officer

11. FIN NO.

Mail Stop P-214 Washington, D.C. 20555

13. TYPE OF REPORT PE RIOD COVE RE D (factussve dams /

' Technical Report throuah Anoust 1982

15. SUPPLEMENTARY NOTES

14. (Leave o/an&/

16. ABSTRACT (200 words or less!

The NRC Inventory of Dams has been prepared as required by the charter of the NRC Dam Safety Officer. The inventory lists 51 dams associated with nuclear power plant sites and 14 uranium mill tailings dams (licensed by NRC) in the U.S. as of February 1,1982. Of the 85 listed nuclear power plants (148 units), 26 plants obtain cooling water from impoundments formed by dams. The 51 dams associated with the plants are: (a) located on a plant site (29 dams at 15 plant sites), (b) located off-site but provide plant cooling water (18 dams at 11 additional plant sites), (c) located upstream from a plant (4 dams) -- they have been identified as dams whose failure, and ensuing plant flooding, l could result in a radiological risk to the public health and safety. The dams that might be considered NRC's responsibility in tenns o.f the Federal dam safety program are identified; this group of dams 00 on nuclear power plant sites and 14 uranium mill tailings dams) was obtained by eliminating dams that do not pose a flooding hazard (e.g. submerged dams) and dams that are regulated by another Federal agency. The report includes the principal design features of all dams and related useful information', i

17. KEY WORDS AND DOCUMENT AN ALYSis 17a. DESCRIPTORS Dam Safety Nuclear Power Plant Dams Tailings Dams Waste Management 17b IDENTIFIE RS/OPEN ENDED TERMS 18 AVAILABILITY STATEMENT

19. SE CURITY CLASS (Thss reporff 21 NO OF PAGES Unlimited U"Cl 88ifi'd 20 SECURITY CLAS$ (Thes osgel 22 PRICE Uncla u nto,e s

sac reau 22s m.n

' dNITE3 STATE 3 . e'os5 GEF s o NUCLEAR CE!ULATORY COMMISSION j* n...s/j g WASHINGTON. D.C. 20566 .. m 8 LTFICIAL SUSINESS PENALTY FOR PRIVATE USE. 5300 l 120555078877 1 AN9T9U US NRC ADM DIV 0F TIDC PDR NUREG COPY POLICY E PUBLICATNS MGT BR h-501 WASHINGTON DC 20555 9 a}}