ML21271A213

License Amendment Request (LAR) 21-01, Chapter 5 9 Oddp FC-20-006 - End State Concrete Surface Areas and Volumes Rev 0 CAC2

ML21271A213
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Site:	Fort Calhoun
Issue date:	07/23/2021
From:	Reese M Omaha Public Power District
To:	Office of Nuclear Reactor Regulation
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FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 1 of 52 FC-20-006 Revision 0 Fort Calhoun Station Building End State Concrete Surface Areas and Volumes Prepared By:

7-23-2021 Date Reviewed By:

Date Approved By:

Date 07/23/2021 Michael Reese Digitally signed by Michael Reese DN: cn=Michael Reese, o, ou, email=mgreese@energysolutions.com, c=US Date: 2021.07.23 08:47:32 -04'00' Jason Q Spaide Digitally signed by Jason Q Spaide DN: cn=Jason Q Spaide, o=Reactor D&D Group, ou=11700, email=jqspaide@energysolutions.com, c=US Date: 2021.07.23 11:19:29 -05'00'

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 2 of 52 TABLE OF CONTENTS 1.0 Issue Statement.............................................................................................................................................4 2.0 Background Statement..................................................................................................................................4 3.0 Methodology..................................................................................................................................................4 4.0 Assumptions..................................................................................................................................................4 5.0 Conclusions...................................................................................................................................................5 6.0 Calculations...................................................................................................................................................5 6.1 Aux Building..............................................................................................................................................5 6.1.1 Assumptions.........................................................................................................................................5 6.1.2 Drawings Referenced...........................................................................................................................6 6.1.3 Concrete Surface Area.........................................................................................................................6 6.1.4 Void Space............................................................................................................................................7 6.1.5 Concrete Volume..................................................................................................................................8 6.1.6 Figures............................................................................................................................................... 10 6.2 Containment........................................................................................................................................... 13 6.2.1 Assumptions...................................................................................................................................... 13 6.2.2 Drawings Referenced........................................................................................................................ 14 6.2.3 Concrete Surface Area...................................................................................................................... 14 6.2.4 Void Space......................................................................................................................................... 15 6.2.5 Concrete Volume............................................................................................................................... 16 6.2.6 Figures............................................................................................................................................... 17 6.3 Turbine Building..................................................................................................................................... 19 6.3.1 Assumptions...................................................................................................................................... 19 6.3.2 Drawings Referenced........................................................................................................................ 19 6.3.3 Concrete Surface Area...................................................................................................................... 19 6.3.4 Void Space......................................................................................................................................... 23 6.3.5 Concrete Volume............................................................................................................................... 24 6.3.6 Figures............................................................................................................................................... 28 6.4 Circ Water Tunnels................................................................................................................................. 30 6.4.1 Assumptions...................................................................................................................................... 30 6.4.2 Drawings Referenced........................................................................................................................ 30 6.4.3 Concrete Surface Area...................................................................................................................... 30 6.4.4 Void Space......................................................................................................................................... 33 6.4.5 Concrete Volume............................................................................................................................... 34 6.4.6 Figures............................................................................................................................................... 36 6.5 Intake Structure...................................................................................................................................... 38

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 3 of 52 6.5.1 Assumptions...................................................................................................................................... 38 6.5.2 Drawings Referenced........................................................................................................................ 39 6.5.3 Concrete Surface Area...................................................................................................................... 39 6.5.4 Void Space......................................................................................................................................... 41 6.5.5 Concrete Volume............................................................................................................................... 42 6.5.6 Figures............................................................................................................................................... 45 6.6 Linear Footage Figures.......................................................................................................................... 49

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 4 of 52 1.0 ISSUE STATEMENT The primary purpose of this paper is to provide bounding and conservative estimates of the concrete surface areas, volumes and void spaces in the Fort Calhoun Station Building basements that will remain as part of the end state during License Termination. The Fort Calhoun License Termination Plan (LTP) states that structures will be removed to 3 feet below grade. These estimates are for the basements of the structures that are greater than 3 feet below grade.

2.0 BACKGROUND

STATEMENT The Fort Calhoun LTP states that structures will be removed to 3 feet below grade. Grade level is the 1004 foot elevation at the site. Therefore, basement structures below the 1001 foot elevation will remain as part of the end state and will require characterization and survey in order to meet the 10 CFR 20 Subpart E release criteria. The impacted end state structures below grade consist of the Turbine Building, Containment, Auxiliary Building, Intake Structure, and Circ Water Tunnels.

3.0 METHODOLOGY This calculation report was prepared in accordance with procedure RP-1010 Rev. 0. Each structure was analyzed for concrete surface area, void space, and concrete volume. The values for simple shapes were determined with an Excel spreadsheet as presented within this paper.

More complex shapes were modeled in AutoCAD, from which data was incorporated into the same spreadsheets to determine the totals for each structure. In order to be bounding and conservative, the concrete volume of piers and other deep foundations are not included. This would further dilute the remaining source term and resulting concentrations for alternate scenarios evaluated. Any rounding or estimating was performed in a conservative manner to assume more surface area, void space, or concrete volume rather than less.

4.0 ASSUMPTIONS The surface areas of the tops of the walls at the 1001 elevation have not been included in the surface area calculations. In addition, only the exposed interior surface areas are calculated.

The exterior surface areas surrounded by soil, including the tops of the walls, are not likely to be contaminated. Therefore, only interior surface areas are calculated in this document. Any further assumptions unique to a structure are included in the corresponding section of the calculation. This report and all assumptions are to be reviewed before, during, and after decommissioning to ensure it reflects the actual end state of the project.

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 5 of 52

5.0 CONCLUSION

S The calculation results are summarized in the table below. These are overall values for each structure.

Structure Concrete Surface Area (Total)

Void Space Concrete Volume (Total)

Min. Wall Thickness ft2 m2 ft3 m3 ft3 m3 in Aux Building 57,609 5,352 513,617 14,544 311,626 8,824 24 Containment 25,410 2,361 128,249 3,632 184,092 5,213 54.5 Turbine Building 43,192 4,013 280,531 7,944 165,676 4,691 24 Circ Water Tunnels 32,519 3,021 101,900 2,885 91,793 2,599 24 Intake Structure 23,125 2,235 177,560 5,028 79,571 2,253 24 TOTAL 182,785 16,981 1,201,857 34,033 832,757 23,581 To aid in radiation modeling, the overall values were further broken down to present the concrete surface area and volume for only the floors and foundations of each structure. The inside perimeter length for the outer structure walls are also presented as linear footage.

Structure Concrete Surface Area (Floors & Fdns Only)

Concrete Volume (Floors & Fdns Only)

Linear Footage ft2 m2 ft3 m3 ft m

Aux Building 33,737 3,134 255,679 7,240 1,719 524 Containment 8,475 787 140,632 3,982 1,171 357 Turbine Building 24,948 2,318 131,720 3,730 1,328 405 Circ Water Tunnels 1,382 421 Intake Structure 6,369 592 51,084 1,447 306 93 TOTAL 73,529 6,831 579,115 16,399 5,907 1,800 6.0 CALCULATIONS 6.1 Aux Building 6.1.1 Assumptions A. The top of the spent fuel pit foundation is at EL 995-6. It is assumed that the surrounding walls are cut such that the base of the walls are at the same EL 995-6.

B. All interior walls will be removed UNO.

C. The floor above the sub-basement at EL 971-0 will be removed to expose the entire sub-basement.

D. Any deep footings are excluded from the concrete volume total.

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 6 of 52 E. This section includes all items up to, but not including, the Containment exterior wall.

For calculation simplicity, this includes an imaginary line in the foundation, rather than the existing construction joints.

F. The Containment concrete curb volume is included in the volume total for floors and foundations.

6.1.2 Drawings Referenced 6.1.3 Concrete Surface Area Sub basement EL 971'-0" to EL 989'-0":

Floor area:

6,333.76 ft2 AutoCAD Figure 1 Wall perimeter:

349.20 ft AutoCAD Figure 4 Wall depth:

18.00 ft EL 971' to 989' Wall area:

6,285.60 ft2 Total area:

12,619.36 ft2 Basement @ EL 989'-0" inside walls:

Tot floor area:

25,108.90 ft2 Up to containment curb Outer wall perimeter:

888.28 ft Not including Containment wall Wall depth:

12.00 ft EL 989' to 1001' Wall area:

10,659.36 ft2 Total surface area:

35,768.26 ft2 Spent fuel pit @ EL 995'-6":

Floor area:

1,823.56 ft2 AutoCAD Figure 1; assumes walls are cut to EL 995'-6" Total perimeter:

201.25 ft from AutoCAD Wall height:

6.50 ft EL 989' to 995'-6" Wall area:

1,308.13 ft2 Total surface area:

3,131.69 ft2 Containment outer wall:

Arc length:

244.85 ft from AutoCAD Height:

10.00 ft top of curb (EL 991') to EL 1001' Surface Area:

2,448.50 ft2 Item #

Drawing #

Rev.

OPPD Doc. #

Rev.

Item #

Drawing #

Rev. OPPD Doc. # Rev.

1 11405-S-48 7

16433 2

8 11405-S-63 9

16448 15 2

11405-S-50 18 16435 18 9

11405-S-64 8

16449 11 3

11405-S-51 18 16436 18 10 11405-S-68 6

16453 8

4 11405-S-59 9

16444 3

11 11405-S-77 7

16461 5

11405-S-60 7

16445 12 11405-S-78 8

16462 6

11405-S-61 7

16446 14 13 11405-S-79 5

16463 7

11405-S-47 7

16432 15

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 7 of 52 Curb around Containment:

Exposed face length:

3.71 ft Arc length:

245.22 ft AutoCAD Figure 1 Surface area:

909.77 ft2 Annulus:

Floor area:

471.26 ft2 AutoCAD Figure 1 Room perimeter:

226.00 ft Wall height:

10.00 ft EL 991' to EL 1001' Wall surface area:

2,260.00 ft2 Total surface area:

2,731.26 ft2 Linear footage:

Basement & Annulus:

998.13 ft AutocCAD Figure 29 Sub basement:

349.20 ft AutocCAD Figure 29 Countainment wall:

371.66 ft AutocCAD Figure 29 LINEAR FOOTAGE:

1,719 ft FLOOR/FDN SURFACE AREA:

33,737 ft2 TOTAL OVERALL SURFACE AREA:

57,609 ft2 6.1.4 Void Space Sub basement EL 971'-0" to EL 989'-0" Floor area:

6,333.76 ft2 AutoCAD Figure 1 Void depth:

30.00 ft EL 971' to 1001' Void volume:

190,012.80 ft3 Basement @ EL 989'-0" inside walls:

Tot floor area:

25,108.90 ft2 Up to Containment curb Void depth:

12.00 ft EL 989' to 1001' Void volume:

301,306.80 ft3 Spent fuel pit @ EL 995'-6":

Floor area:

1,823.56 ft2 AutoCAD Figure 1; walls cut to EL 995'-6" Void depth:

5.50 ft EL 995'-6" to 1001' Void volume:

10,029.58 ft3 Above Containment curb:

Curb cross section area:

3.75 ft2 Curb width:

2.88 ft Void height:

12.00 ft EL 989' to 1001'

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 8 of 52 Net void area:

30.81 ft3 Curb width x void height - curb area Arc length:

245.22 ft Net void volume:

7,555.23 ft3 Net void area x arc length Annulus:

Floor area:

471.26 ft2 AutoCAD Figure 1 Void height:

10.00 ft EL 991' to EL 1001' Void volume:

4,712.60 ft3 TOTAL VOID SPACE:

513,617 ft3 6.1.5 Concrete Volume Sub basement @ EL 971'-0" Fdn area =

7,488.58 ft2 AutoCAD Figure 4 Fdn thickness =

5.50 ft Fdn conc. volume =

41,187.19 ft3 Curved wall:

Cross section area =

235.54 ft2 AutoCAD Figure 4 Wall height =

8.00 ft from EL 971' to 979' Wall conc. volume =

1,884.32 ft3 Remaining walls:

Cross section area =

919.28 ft2 AutoCAD Figure 4 Wall height =

12.50 ft from EL 971' to 983'-6" Wall conc. volume =

11,491.00 ft3 Total concrete volume =

54,562.51 ft3 Basement @ EL 989'-0" inside walls:

Cut section area =

2,203.82 ft2 AutoCAD Figure 3 Wall height =

12.00 ft from EL 989' to 1001' Concrete volume =

26,445.84 ft3 Annulus wall:

Straight portion:

Cut section area =

270.95 ft2 AutoCAD Figure 3 Wall height =

10.00 ft from EL 991' to 1001' Concrete volume =

2,709.50 ft3 Angled portion:

Cut section area =

7.29 ft2 AutoCAD Figure 5

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 9 of 52 Arc length =

88.26 ft from AutoCAD Concrete volume =

643.42 ft3 Total concrete volume =

3,352.92 ft3 Spent fuel pit @ EL 995'-6":

Cut section area =

1,823.56 ft2 AutoCAD Figure 3

Depth =

6.50 ft EL 989' to 995'-6" Concrete volume =

11,853.14 ft3 Containment curb:

Cross section area =

3.75 ft2 Arc length =

245.22 ft Concrete volume =

919.58 ft3 Foundation volumes (refer to Figure 2 for Area identification):

Area 1:

Thickness =

10.00 ft EL 979' to 989' (sloped)

Area =

700.00 ft2 AutoCAD Figure 2 Concrete volume =

7,000.00 ft3 Halved for slope =

3,500.00 ft3 Area 2:

Thickness =

10.00 ft EL 979' to 989' Area =

6,301.00 ft2 AutoCAD Figure 2 Concrete volume =

63,010.00 ft3 Area 3:

Thickness =

12.00 ft EL 979' to 991' Area =

1,691.00 ft2 AutoCAD Figure 2 Concrete volume =

20,292.00 ft3 Area 4:

Thickness =

10.00 ft EL 979' to 989' (sloped)

Area =

403.00 ft2 AutoCAD Figure 2 Concrete volume =

4,030.00 ft3 Halved for slope =

2,015.00 ft3 Area 5:

Thickness =

5.50 ft EL 983'-6" to 989' Area =

22,850.00 ft2 AutoCAD Figure 2 Concrete volume =

125,675.00 ft3 Total concrete volume =

214,492.00 ft3 FLOOR/FDN CONCRETE VOLUME:

255,679 ft3 Includes curbs TOTAL CONCRETE VOLUME:

311,626 ft3

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 10 of 52 6.1.6 Figures Figure 1 - Aux Building Floor Elevations and Surface Area

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 11 of 52 Figure 2 - Aux Building Foundations

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 12 of 52 Figure 3 - Aux Building Cut Section Areas

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 13 of 52 Figure 4 - Sub-basement Wall and Foundation Areas Figure 5 - Sloped Section of Annulus Outer Wall 6.2 Containment 6.2.1 Assumptions A. All interior walls will be removed UNO.

B. For calculation simplicity, the foundation is only considered up to imaginary line of outer Containment wall rather than existing Construction joints. Foundations beyond that are captured in the Aux Building calculation.

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 14 of 52 C. The stressing gallery is included in the overall surface area and concrete volume totals, but is excluded from the totals specific to floors and foundations only.

D. The stressing gallery is omitted from the minimum wall thickness determination as it is at a low elevation and is a relatively insignificant structure compared to the rest of Containment.

6.2.2 Drawings Referenced 6.2.3 Concrete Surface Area Containment shell inner walls:

Upper slope length =

8.83 ft Dist to CL =

53.77 ft AutoCAD Figure 9 Surface area =

2,983.19 ft2 Length

• D Lower slope length =

1.77 Dist to CL =

52.56 ft AutoCAD Figure 9 Surface area =

584.53 ft2 Length

• D Total surface area =

3,567.72 ft2 Upper + Lower Containment floor:

Diameter =

103.88 ft Surface area =

8,475.27 ft2 Accounts for floors @ EL 991' &

973'-6" Containment foundation circular walls:

Diameter =

33.50 ft Circumference =

105.24 ft D

Wall height =

17.50 ft EL 973'-6" to 991' Surface area =

1,841.76 ft2 Circumference x wall ht Stressing gallery:

Inside perimeter =

31.67 ft 7' x 8'-10" Dist. center to CL Cont. =

57.92 ft Surface area =

11,524.78 ft2 Perimeter x D Item # Drawing No. Rev. OPPD Doc. No. Rev.

1 11405-S-17 7

16396 17 2

11405-S-23 4

16402 5

3 11405-S-24 4

16403 4

11405-S-6 9

16385 9

5 11405-S-8 7

16387 6

11405-S-14 8

16393 7

11405-S-15 6

16394 8

11405-S-16 6

16395

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 15 of 52 Linear footage:

Containment shell:

Dist to CL =

53.77 ft AutoCAD Figure 9 Linear footage =

337.85 ft 2R Stressing gallery outer wall:

Dist to CL =

61.42 ft AutoCAD Figure 7 Linear footage =

385.91 ft 2R Stressing gallery inner wall:

Dist to CL =

54.42 ft AutoCAD Figure 7 Linear footage =

341.93 ft 2R Containment fdn circular wall:

Diameter =

33.50 ft Linear footage =

105.24 ft D

LINEAR FOOTAGE:

1,171 ft FLOOR/FDN SURFACE AREA:

8,475 ft2 does not include stressing gallery TOTAL OVERALL SURFACE AREA:

25,410 ft2 6.2.4 Void Space Containment shell:

Cross section area =

536.20 ft2 AutoCAD Figure 9 Dist. centroid to CL =

26.81 ft Void volume =

90,324.28 ft3 Area

• D Stressing gallery:

Cross section area =

61.83 ft2 7' x 8'-10" Dist. center to CL Cont. =

57.92 ft Void volume =

22,500.02 ft3 Area x D Containment foundation:

Circular void diameter =

33.50 ft Area =

881.41 ft2 Depth =

17.50 ft EL 991' to 973'-6" Void volume =

15,424.73 ft3 TOTAL VOID SPACE =

128,249 ft3

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 16 of 52 6.2.5 Concrete Volume Containment walls:

Straight portion:

Cut section area =

1,454.01 ft2 AutoCAD Figure 10 Wall height =

10.00 ft EL 991' to 1001' Wall volume =

14,540.10 ft3 Angled base:

Cut section area =

14.01 ft2 AutoCAD Figure 8 Dist centroid to CL =

54.22 ft Concrete volume =

4,772.85 ft3 Area x D Total concrete volume =

19,312.95 ft3 Stressing gallery:

Cross section area =

50.00 ft2 10' x 10'-3" outside w/ 1.5' thick walls Dist. center to CL Cont. =

57.92 ft Concrete volume =

18,195.07 ft3 Area x D Containment foundation mat:

Circular bottom floor (10' thick):

Diamete r =

50.00 ft Area =

1,963.50 ft2 Thickness =

10.00 ft EL 963'-6" to 973'-6" Concrete volume =

19,634.95 ft3 Circular walls EL 973'-6" to 979'-0" OD =

50.00 ft ID =

33.50 ft Cut section area =

1,082.08 ft2 Wall height =

5.50 ft Concrete volume =

5,951.44 ft3 Upper mat EL 979' to 991':

Net area =

10,083.12 ft2 AutoCAD plan view; accounts for penetration; within Containment walls Depth =

12.00 ft Concrete volume =

120,997.44 ft3 Total concrete volume =

146,583.83 ft3 FLOOR/FDN CONCRETE VOLUME:

140,632 ft3 does not include stressing gallery TOTAL CONCRETE VOLUME =

184,092 ft3

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 17 of 52 6.2.6 Figures Figure 6 - Containment General Arrangement Plan View

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 18 of 52 Figure 7 - Containment General Arrangement Elevation View Figure 8 - Sloped Portion of Containment Walls Cross Sectional Area Figure 9 - Void Area Inside Containment & Sloped Wall Surface Area

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 19 of 52 Figure 10 - Containment Foundation and Wall Areas 6.3 Turbine Building 6.3.1 Assumptions A. Turbine Generator pedestals are assumed to be cut at the same 1001 elevation assumed for the walls.

B. Footings are not included in the concrete volume calculation. The only exception is at the heater drain pump, where the footing is included to account for the heater drain pump trench void.

C. The linear footage includes the outer wall perimeter and pedestal perimeters.

6.3.2 Drawings Referenced 6.3.3 Concrete Surface Area Outer bldg walls:

Tot. wall perimeter =

884.00 ft AutoCAD Figure 12 Item # Drawing No. Rev. OPPD Doc. No. Rev.

Item # Drawing No. Rev. OPPD Doc. No. Rev.

1 11405-A-258 26 12189 26 9

11405-S-293 6

16519 7

2 11405-S-91 4

16475 10 11405-S-294 5

16520 9

3 11405-S-92 7

16476 8

11 11405-S-305 6

16526 4

11405-S-93 5

16477 12 11405-S-306 4

16527 5

11405-S-94 4

16478 13 11405-S-307 4

16528 6

11405-S-95 5

16479 14 11405-S-430 3

16598 7

11405-S-291 7

16517 9

15 11405-S-431 4

16599 8

11405-S-292 5

16518

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 20 of 52 Wall height =

11.00 ft from fdn @ EL 990' to cut line @ EL 1001' Tot. wall surface area =

9,724.00 ft2 T/G pedestals (top of pedestals to be deducted from overall bldg fdn surface area):

Pedestals cut @ EL 1001' Shape 1:

Perimeter (ea) =

34.58 ft Height =

11.00 ft from fdn @ EL 990' to cut line @ EL 1001' Wall surface area (ea) =

380.38 ft2 Pedestal top area (ea) =

74.33 ft2 8' x 9'-3 1/2" Net surface area (ea) =

454.71 ft2

1. of pedestals =

2.00 Total area =

909.42 ft2 Shape 2:

Perimeter (ea) =

50.00 ft Height =

11.00 ft from fdn @ EL 990' to cut line @ EL 1001' Wall surface area (ea) =

550.00 ft2 Pedestal top area (ea) =

110.00 ft2 Contact area w/ shape 7 =

-44.00 ft2 5'-6" x 4'-0" ea. end Net surface area (ea) =

616.00 ft2

1. of pedestals =

2.00 Total area =

1,232.00 ft2 Shape 3:

Perimeter =

89.67 ft Height =

11.00 ft from fdn @ EL 990' to cut line @ EL 1001' Wall surface area =

986.37 ft2 Pedestal top area =

193.33 ft2 40' x 4'-10" Net surface area =

1,179.70 ft2 Shape 4:

Perimeter (ea) =

50.83 ft Height =

11.00 ft from fdn @ EL 990' to cut line @ EL 1001' Wall surface area (ea) =

559.13 ft2 Pedestal top area (ea) =

161.00 ft2 13'-5" x 12' Contact area w/ shape 6 =

-44.00 ft2 5'-6" x 4'-0" ea. end Net surface area (ea) =

676.13 ft2

1. of pedestals =

2.00 Total area =

1,352.26 ft2 Shape 5:

Perimeter (ea) =

42.00 ft Height =

11.00 ft from fdn @ EL 990' to cut line @ EL 1001' Wall surface area (ea) =

462.00 ft2

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 21 of 52 Pedestal top area (ea) =

110.00 ft2 10' x 11' Net surface area (ea) =

572.00 ft2

1. of pedestals =

2.00 Total area =

924.00 ft2 Shape 6:

Wall surface area (ea) =

50.08 ft2 AutoCAD Figure 15 Bottom length =

14.82 ft Thickness =

4.00 ft Bottom surface area =

59.28 ft2 Total area =

159.44 ft2 2 x wall surf area + bottom Shape 7:

Wall surface area (ea) =

42.50 ft2 AutoCAD Figure 14 Bottom length =

12.66 ft Thickness =

4.00 ft Bottom surface area =

50.64 ft2 Total area =

135.64 ft2 2 x wall surf area + bottom Tot pedestal surf. area =

5,892.46 ft2 Circ water pipe penetrations:

Surface area 66" hole (ea.):

-23.76 ft2 Qty:

4 Surface area 90" hole (ea.):

-44.18 ft2 Qty:

2 Total surface area =

-183.40 ft2 Bldg foundation @ EL 990':

Gross fdn surface area =

26,235.00 ft2 AutoCAD Figure 12; inside outer walls only; includes T/G fdn; does not account for pits or voids Pedestal 1-5 top area =

1,103.99 ft2 sum from calc above Net fdn surface area =

24,947.61 ft2 Gross surface area minus pedestal tops

& cir water pens Sump pit walls, bottom EL 980'-3":

E/W walls:

Wall length =

11.00 ft Wall height =

9.75 ft Surface area =

107.25 ft2

1. of walls =

2.00 N/S walls:

Wall length =

13.00 ft Wall height =

9.75 ft Surface area =

126.75 ft2

1. of walls =

2.00 Tot wall area =

468.00 ft2

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 22 of 52 Condensate pump pits:

Corregated pipe ID:

3.00 ft Inside circumference:

9.42 ft Depth:

22.00 ft Wall surface area ea. =

207.35 ft2 each pump

1. of pump pits =

3.00 Tot surface area =

622.04 ft2 T/G foundation trench:

Outer perimeter:

147.25 ft Block 1 perimeter:

39.70 ft Block 2 perimeter:

45.30 ft Total wall length:

232.25 ft Depth:

3.33 ft Wall surface area:

773.39 ft2 Lube Oil Pad:

E/W wall length (ea) =

12.83 ft remaining walls accounted for in TB wall estimation Tot wall length =

30.67 ft Wall height =

0.50 ft EL 990' to 990'-6" Total surface area =

15.33 ft2 Heater drain pump pit:

Trench wall perimeter =

84.23 ft Trench depth =

3.75 ft includes 7" topping Trench wall surface area =

315.86 ft2 Corregated pipe ID =

2.00 ft Inside circumference:

6.28 ft Depth:

23.00 ft Wall Surface Area:

144.51 ft2 each pump

1. of pump pits =

3.00 Tot pit wall surface area =

433.54 ft2 Total surface area =

749.40 ft2 LINEAR FOOTAGE:

1,328 ft includes outer wall and pedestals only FLOOR/FDN SURFACE AREA:

24,948 ft2 TOTAL OVERALL SURFACE AREA:

43,192 ft2

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 23 of 52 6.3.4 Void Space Overall gross building inside volume:

Area inside walls =

26,235.00 ft2 AutoCAD Figure 12 Void height =

11.00 ft EL 990' to 1001' Void volume =

288,585.00 ft3 Sump pit:

Pit area =

143.00 ft2 11' x 13' Void height =

9.75 ft EL 980'-3" to 990' Void volume =

1,394.25 ft3 Condensate pump pits:

Corregated pipe ID =

3.00 ft Pipe area =

7.07 ft Depth =

22.00 ft Pipe void volume ea. =

155.54 ft3

1. of pump pits =

3.00 Total void volume =

466.62 ft3 T/G foundation trench:

Gross trench area =

798.04 ft2 AutoCAD Figure 11 Block 1 area =

69.89 ft2 15'-3" x 4'-7" Block 2 area =

82.88 ft2 18'-1" x 4'-7" Net trench area =

645.27 ft2 Trench depth =

3.33 ft Net trench void volume =

2,150.88 ft3 Circ water pipe penetrations accounted for in Circ Water Pipe calculation Lube Oil Pad concrete volume =

-263.92 ft3 from concrete vol. calc.

Heater drain pump pit:

Trench area =

132.17 ft2 AutoCAD Figure 11 Trench depth =

3.75 ft Trench void volume =

495.64 ft3 Corregated pipe ID =

2.00 ft Inside area =

3.14 ft2 Depth =

23.00 ft Void volume ea. =

72.26 ft3

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 24 of 52

1. of pump pits =

3.00 Tot pit void volume =

216.77 ft3 Total void volume =

712.41 ft3 Pedestal concrete volume =

-12,514.21 ft3 TOTAL VOID VOLUME =

280,531 ft3 6.3.5 Concrete Volume Outer bldg walls:

Cut section area =

1,822.00 ft2 AutoCAD Figure 12 Wall height =

11.00 ft from fdn @ EL 990' to cut line @ EL 1001' Concrete volume =

20,042.00 ft3 Bldg foundation @ EL 990':

Footings (other than heater drain pit footing) considered deep foundations for structural support only - excluded from analysis.

Gross bldg fdn area =

29,992.00 ft2 AutoCAD Figure 12 T/G fdn area =

7,332.00 ft2 156' x 47' Net bldg fdn area =

22,660.00 ft2 Gross bldg fdn area - T/G fdn area Building fdn thickness =

2.58 ft Includes 7" topping; doesn't include thickness of footings Concrete volume =

58,538.26 ft3 T/G pedestals:

Pedestals cut @ EL 1001' Shape 1:

Area =

74.33 ft2 8' x 9'-3 1/2" Height =

11.00 ft Concrete volume ea. =

817.63 ft3

1. of pedestals =

2.00 Total concrete volume =

1,635.26 ft3 Shape 2:

Area =

110.00 ft2 Height =

11.00 ft Concrete volume ea. =

1,210.00 ft3

1. of pedestals =

2.00 Total concrete volume =

2,420.00 ft3 Shape 3:

Area =

193.33 ft2 40' x 4'-10" Height =

11.00 ft Concrete volume =

2,126.63 ft3 Shape 4:

Area =

161.00 ft2 13'-5" x 12'

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 25 of 52 Height =

11.00 ft Concrete volume ea. =

1,771.00 ft3

1. of pedestals =

2.00 Total concrete volume =

3,542.00 ft3 Shape 5:

Area =

110.00 ft2 10' x 11' Height =

11.00 ft Concrete volume ea. =

1,210.00 ft3

1. of pedestals =

2.00 Total concrete volume =

2,420.00 ft3 Shape 6:

Area =

50.08 ft2 AutoCAD Figure 15 Thickness =

4.00 ft Concrete volume =

200.32 ft3 Shape 7:

Area =

42.50 ft2 AutoCAD Figure 14 Thickness =

4.00 ft Concrete volume =

170.00 ft3 Total pedestal conc. vol. =

12,514.21 ft3 Sump pit:

Slab void area =

143.00 ft2 11' x 13' Slab depth =

2.58 ft Slab void volume =

-368.94 ft3 Wall cross section area =

52.00 ft2 Depth below slab =

7.17 ft Wall conc. volume =

372.84 ft3 Pit floor area =

224.00 ft2 16' x 14' Floor thickness =

1.00 ft Floor conc. volume =

224.00 ft3 Net concrete volume =

227.90 ft3 Condensate pump pits:

Pit OD =

5.00 ft Pit ID =

3.00 ft Area =

12.57 ft2 Depth below footing =

19.42 ft Concrete volume (ea) =

244.06 ft3 Qty =

3 Concrete volume tot =

732.18 ft3 Pit floor OD =

5.00 ft Area =

28.27 ft2 Floor thickness =

1.50 ft Concrete volume (ea) =

42.41 ft3 Qty =

3 Concrete volume tot =

127.22 ft3

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 26 of 52 Total concrete volume =

859.39 ft3 T/G foundation trench:

Net trench area =

645.27 ft2 See void space calc Trench depth =

-3.33 ft Net trench void volume =

-2,148.75 ft3 Circ water pipe penetrations:

Area 66" hole (ea.):

23.76 ft2 Qty:

4 Area 90" hole (ea.):

44.18 ft2 Qty:

2 Total surface area =

183.40 ft2 Slab thickness =

-2.58 ft Penetration void volume =

-473.17 ft3 Lube Oil Pad:

Pad area =

527.83 ft2 AutoCAD Figure 11 Pad height =

0.50 ft Pad conc. volume =

263.92 ft3 Heater drain pump pit:

Trench area =

132.17 ft2 AutoCAD Figure 11 Trench depth =

-3.75 ft Trench void volume =

-495.64 ft3 Pit OD =

4.00 ft Pit ID =

2.00 ft Area =

9.42 ft2 Depth below footing =

17.25 ft Concrete volume (ea) =

162.50 ft3 Qty =

3 Concrete volume tot =

487.49 ft3 Pit floor OD =

4.00 ft Area =

12.57 ft2 Floor thickness =

1.50 ft Concrete volume (ea) =

18.86 ft3 Qty =

3 Concrete volume tot =

56.57 ft3 Total concrete volume =

48.41 ft3 T/G foundation:

North end:

Width =

47.00 ft Length =

103.33 ft Thickness =

9.00 ft

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 27 of 52 Concrete volume =

43,708.59 ft3 South end:

Width =

47.00 ft Length =

52.67 ft Thickness =

12.33 ft Concrete volume =

30,522.79 ft3 Footing @ Heater Drain Pump Trench:

Width =

22.92 ft Length =

21.67 ft Thickness =

3.17 ft only considers concrete below 2' slab Concrete volume =

1,572.48 ft3 FLOOR/FDN CONCRETE VOLUME:

131,720 ft3 TOTAL CONCRETE VOLUME =

165,676 ft3

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 28 of 52 6.3.6 Figures

`

Figure 11 - Turbine Building General Arrangement Plan View

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 29 of 52 Figure 12 - Turbine Bldg Foundation and Wall Areas Figure 13 - Turbine Generator Pedestal Layout

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 30 of 52 Figure 14 - Pedestal View A-A Figure 15 - Pedestal View B-B 6.4 Circ Water Tunnels 6.4.1 Assumptions A. The roof of the upper intake room at the intake structure splits the EL 1001 cut elevation, so it is assumed that the roof will be fully removed.

B. The concrete surface area and volume were not further broken down to isolate the floors and foundations for the circ water tunnels.

6.4.2 Drawings Referenced 6.4.3 Concrete Surface Area 90" Discharge Tunnel 90 deg elbow:

Elbow radius =

11.25 ft L = 0.25D =

17.67 ft 90" pipe circumf. =

23.56 ft Surface area ea. =

416.34 ft2 Qty =

2.00 Tot surface area =

832.68 ft2 Angled run:

Length =

86.18 ft AutoCAD Figure 16 Perimeter =

32.00 ft 7'-6" x 8'-6" rectangular tunnel Item # Drawing No. Rev. OPPD Doc. No. Rev.

1 11405-S-300 16523 2

11405-S-301 5

16524 3

11405-S-299 7

16522 4

11405-S-311 6

16531 2

5 11405-S-317 6

16537 8

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 31 of 52 Surface area ea. =

2,757.76 ft2 Qty =

2.00 Tot surface area =

5,515.52 ft2 Straight run:

Length =

9.80 ft from angle junction to intake structure Perimeter =

34.00 ft 8'-6" x 8'-6" rectangular tunnel Surface area =

333.27 ft2 Room @ intake structure (down to screen house tunnel interface):

Wall lengths (ft):

N =

21.17 E =

82.92 W =

74.42 Wall perimeter =

178.50 ft accounts for tunnel opening @ SW corner Wall height =

14.17 ft Tot wall area =

2,528.80 ft2 Floor area =

1,755.07 ft2 21'-2" x 82'-11" Ceiling area =

1,755.07 ft2 Tot surface area =

6,038.94 ft2 Screen house tunnels:

NE wall length =

110.02 ft AutoCAD Figure 20 SW wall length =

151.40 ft AutoCAD Figure 20 Wall height =

14.17 ft Tot wall area =

3,703.45 ft2 Ceiling area =

3,133.97 ft2 AutoCAD Figure 20 Floor area =

3,133.97 ft2 AutoCAD Figure 20 Divider wall perim. =

44.00 ft 20' x 2' x 14.17' Divider wall area =

623.33 ft2 2 ft dia. column circ. =

6.28 ft Column area ea. =

89.01 ft2 Column qty =

6.00 Tot column area =

534.07 ft2 Tot surface area =

11,128.79 ft2 TOT DISCH. SURFACE AREA =

23,849.20 ft2 66" Intake Tunnel Tunnel from TB to bottom of slope:

Floor area =

427.32 ft2 AutoCAD Figure 16 66" penetration area =

23.76 ft2 Ceiling area =

379.80 ft2 deducting area from (2) penetrations Wall perimeter =

120.06 ft AutoCAD Figure 16

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 32 of 52 Wall height =

8.50 ft Wall area =

1,020.48 ft2 Tot area (North) =

1,827.60 ft2 Tot area (South) =

1,827.60 ft2 Tot surface area =

3,655.19 ft2 Sloped portion:

Floor area =

173.73 ft2 from AutoCAD in pure plan view - must adjust for slope Adjusted for 45 deg =

245.69 ft2 (Area/cos 45°) AutoCAD Figure 16 Ceiling area =

245.69 ft2 Wall length =

15.54 ft Adjusted for 45 deg =

21.98 ft Divider wall arc length =

6.92 ft Tot wall length =

50.88 ft includes (2) straight walls and rounded divider wall Wall height =

8.50 ft Tot wall area =

432.47 ft2 Tot surface area =

923.86 ft2 Straight run from top of slope to room @ intake structure:

Inside tunnel perimeter =

34.00 ft 8'-6" x 8'-6" Tunnel length =

63.59 ft Tot surface area =

2,162.06 ft2 Room @ intake structure (assume no ceiling; walls cut at EL 1001'):

Floor area =

665.54 ft2 AutoCAD Figure 19 Wall perimeter =

140.35 ft AutoCAD Figure 19 Wall height =

9.00 ft EL 992'-0" to EL 1001'-0" Wall area =

1,263.15 ft2 Tot surface area =

1,928.69 ft2 TOT INTAKE SURFACE AREA =

8,669.80 ft2 Linear footage:

AutoCAD Figure 31 90" tunnel inner wall perimeter =

359.54 ft 66" tunnel inner wall perimeter =

385.64 ft Straight tunnel length =

14.26 ft x4 walls =

57.04 ft Lower room perimeter =

178.47 ft Upper room perimeter =

140.35 ft Discharge tunnel NE wall length =

110.02 ft Discharge tunnel SW wall length =

151.40 ft LINEAR FOOTAGE:

1,382 ft TOTAL OVERALL SURFACE AREA:

32,519 ft2

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 33 of 52 6.4.4 Void Space 90 deg elbow:

90" pipe area =

44.18 ft2 D2/4 Pipe length =

17.67 ft Void volume ea. =

780.73 ft3 Qty =

2.00 Tot void volume =

1,561.45 ft3 Angled run:

Tunnel area =

63.75 ft2 7'-6" x 8'-6" rectangular tunnel Tunnel length =

86.18 ft AutoCAD Figure 16 Void volume ea. =

5,493.98 ft3 Qty =

2.00 Tot void volume =

10,987.95 ft3 Straight run:

Tunnel area =

72.25 ft2 8'-6" x 8'-6" rectangular tunnel Tunnel length =

9.80 ft from angle junction to intake structure Void volume =

708.19 ft3 Room @ intake structure (down to screen house tunnel interface):

Floor area =

1,755.07 ft2 21'-2" x 82'-11" Void height =

14.17 ft Void volume =

24,863.48 ft3 Screen house tunnels:

Floor area =

3,133.97 ft2 AutoCAD Figure 20 Divider area =

40.00 ft2 20' x 2' Net area =

3,093.97 ft2 Floor area - divider area Void height =

14.17 ft Net void volume =

43,841.55 ft3 Net area x void height TOT DISCH. VOID VOLUME =

81,963 ft3 66" Intake Tunnel Tunnel from TB to bottom of slope:

Floor area =

427.32 ft2 AutoCAD Figure 16 Void height =

8.50 ft Void volume (North) =

3,632.22 ft3

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 34 of 52 Void volume (South) =

3,632.22 ft3 Tot void volume =

7,264.44 ft3 Sloped portion:

Floor area =

245.69 ft2 Adjusted for 45 deg slope Void height =

8.50 ft Void volume =

2,088.38 ft3 Straight run from top of slope to room @ intake structure:

Tunnel cross section =

72.25 ft2 8'-6" x 8'-6" Tunnel length =

63.59 ft Void volume =

4,594.38 ft3 Room @ intake structure (assume no ceiling; walls cut at EL 1001'):

Floor area =

665.54 ft2 AutoCAD Figure 19 Void height =

9.00 ft EL 992'-0" to EL 1001'-0" Void volume =

5,989.86 ft3 TOT INTAKE VOID VOLUME =

19,937 ft3 TOTAL VOID VOLUME =

101,900 ft2 6.4.5 Concrete Volume Lower level gross volume from TB to 19' past line SA:

Gross area =

3,955.50 ft2 AutoCAD Figure 17 Height =

13.50 ft Gross volume =

53,399.25 ft3 Upper level gross volume from bottom of slope to 19' past line SA:

Gross area =

931.92 ft2 AutoCAD Figure 18 Height =

11.00 ft floor is accounted for with lower level ceiling Gross volume =

10,251.12 ft3 Straight run from 19' past line SA to intake structure:

Gross cross section area =

330.75 ft2 24'-6" x 13'-6" Run length =

9.83 ft Gross volume =

3,252.37 ft3

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 35 of 52 Total void volume from TB to intake structure (from void volume calc):

Void volume =

-27,204.79 ft3 Room @ intake structure (down to screen house tunnel interface):

Ceiling volume =

6,398.41 ft3 2'-10" x 25'-10" x 87'-5" Floor volume =

6,398.41 ft3 East wall volume =

2,377.20 ft3 2'-4" x 14'-2" x 71'-11" (accounts for opening)

West wall volume =

2,823.56 ft3 2'-4" x 14'-2" x 85'-5" North wall volume =

731.94 ft3 2'-0" x 25'-10" x 14'-2" Total concrete volume =

18,729.52 ft3 Screen house tunnels:

SW wall cross section area =

383.25 ft2 AutoCAD Figure 20 NE wall cross section area =

250.87 ft2 AutoCAD Figure 20 Total wall area =

634.12 ft2 Wall height =

14.17 ft Wall concrete volume =

8,983.32 ft3 Ceiling concrete area =

3,769.23 ft2 AutoCAD Figure 20 Floor concrete area =

3,769.23 ft2 Total concrete area =

7,538.46 ft2 Thickness =

2.83 ft Total concrete volume =

21,358.94 ft3 Total concrete volume =

30,342.27 ft3 66" Intake Tunnel Room @ intake structure (assume no ceiling; walls cut at EL 1001'):

Ceiling splits the EL 1001' cut line, so it is assumed that the ceiling will be removed Wall cut section area =

355.66 ft2 AutoCAD Figure 19 Wall height =

8.50 ft Wall concrete volume =

3,023.11 ft3 Note that floor is accounted for with discharge room ceiling TOTAL CONCRETE VOLUME =

91,793 ft2

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 36 of 52 6.4.6 Figures Figure 16 - Circ Water Discharge Tunnels at the Turbine Building

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 37 of 52 Figure 17 - Discharge Tunnel Gross Concrete Area Figure 18 - Intake Tunnel Gross Concrete Area

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 38 of 52 Figure 19 - Upper Room West of Intake Structure Figure 20 - Discharge Tunnel at Screen House 6.5 Intake Structure 6.5.1 Assumptions A. All interior walls will be removed except the east-most walls at the river interface.

B. The calculation does not account for any gates that may be left in place at the river interface.

C. The floor and foundation surface area total includes all dividers and circ water pumps.

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 39 of 52 6.5.2 Drawings Referenced 6.5.3 Concrete Surface Area SW room @ EL 994'-6":

Floor area =

173.61 ft2 20'-10" x 8'-4"; includes tops of cut walls #3 & 5 Wall perimeter =

24.00 ft 18' x 6'; open on two sides Wall height =

6.50 ft EL 994'-6" to 1001' Wall area =

156.00 ft2 Total area =

329.61 ft2 Floor area + wall area S room @ EL 985'-0":

Floor area =

280.56 ft2 33'-8" x 8'-4"; includes top of cut wall #3 East wall length =

8.33 ft Wall height =

16.00 ft EL 985' to 1001' East wall area =

133.28 ft2 South wall length =

33.66 ft Wall height =

16.00 ft EL 985' to 1001' South wall area =

538.56 ft2 West wall length =

8.33 ft Wall height =

9.50 ft EL 985' to 994'-6" West wall area =

79.14 ft2 Total area =

1,031.54 ft2 Floor area + wall areas W room @ EL 974'-8" floor area =

2,359.00 ft2 AutoCAD Figure 21; accounts for penetrations Wall #1 (North) surface area =

2,171.00 ft2 AutoCAD Figure 25 Wall #3 (South) surface area =

1,799.98 ft2 AutoCAD Figure 26 West Wall:

Wall length @ 975' =

10.33 ft Wall height =

26.00 ft EL 975' to 1001' Wall length @ 974'-8" =

63.67 ft Wall height =

26.33 ft EL 974'-8" to 1001' Gross wall surf. Area =

1,945.01 ft2 Item # Drawing No. Rev. OPPD Doc. No. Rev.

1 11405-S-311 6

16531 2

2 11405-S-312 15 16532 15 3

11405-S-313 24 16533 24 4

11405-S-315 11 16535 11 5

11405-S-316 8

16536 11

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 40 of 52 Tunnel penetration =

64.00 ft2 8'x8' Net wall surf. Area =

1,881.01 ft2 N room @ EL 975'-0":

Floor area =

833.00 ft2 AutoCAD Figure 21 East bay perimeter =

30.00 ft 11'x8'x11' Wall height =

26.00 ft EL 975' to 1001' Gross wall area =

780.00 ft2 Penetration area =

48.00 ft2 6' x 8' Net wall area =

732.00 ft2 Inner east wall length =

10.33 Wall height =

26.00 ft EL 975' to 1001' Gross wall area =

268.58 ft2 Penetration area =

48.00 ft2 6' x 8' Net wall area =

220.58 ft2 Total surface area =

1,785.58 ft2 Sloped region:

Floor area (flat) =

1,630.83 ft2 from AutoCAD in pure plan view - must adjust for slope Floor area (sloped) =

1,643.08 ft2 Adjusted for slope (Area/cos 7°) Figure 21 Dividers:

Divider perimeter =

30.31 ft Divider height =

5.17 ft EL 967' (@ mid divider) to 973'-2" Divider wall area (ea.) =

156.60 ft2 Number of dividers =

3.00 Tot divider wall area =

469.80 ft2 Divider floor area (ea.) =

126.04 ft2 Number of dividers =

3.00 Tot divider floor area =

378.12 ft2 East Wall:

Wall length =

63.67 ft Wall height =

31.00 ft EL 970' to 1001' Cutout area (ea) =

48.00 ft2 6' x 8' Number of cutouts =

6.00 Tot cutout area =

288.00 ft2 Net wall area =

1,685.77 ft2 Gross wall area - cutout area Circ Water Pumps:

Floor area =

126.13 ft2 AutoCAD Figure 27 Ceiling area =

95.45 ft2 accounts for penetration Wall perimeter =

44.56 ft Wall height =

7.00 ft Wall area =

311.92 ft2 Tot area per pit =

533.50 ft2

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 41 of 52 Number of sump pits =

3.00 Total sump pit area =

1,600.49 ft2 E rooms @ EL 970:

Floor area per bay =

95.92 ft2 AutoCAD Figure 21 Wall perimeter per bay =

30.66 ft Wall height =

31.00 ft EL 970' to 1001' Wall area per bay =

1,105.46 ft2 Penetration area ea. =

48.00 ft2 6' x 8' Net wall area per bay =

1,057.46 ft2 Number of bays =

6.00 Total surface area =

5,990.28 ft2 LINEAR FOOTAGE:

306 ft AutoCAD Figure 32 FLOOR/FDN SURFACE AREA:

6,369 ft2 Includes dividers, circ water pumps TOTAL OVERALL SURFACE AREA:

23,125 ft2 6.5.4 Void Space SW room @ EL 994'-6":

Floor area =

173.60 ft2 20'-10" x 8'-4" Void height =

6.50 ft EL 994'-6" to 1001' Void volume =

1,128.40 ft3 S room @ EL 985'-0":

Floor area =

280.55 ft2 33'-8" x 8'-4

Void height =

16.00 ft EL 985' to 1001' Void volume =

4,488.80 ft3 W room @ EL 974'-8":

Floor area =

2,451.17 ft2 38'-6" x 63'-8"'

Void height =

26.33 ft EL 974'-8" to 1001' Void volume =

64,547.47 ft3 N room @ EL 975'-0":

Floor area =

833.00 ft2 AutoCAD Figure 21 Void height =

26.00 ft EL 975' to 1001' Void volume =

21,658.00 ft3 Sloped region:

Below EL 974'-8":

Cross section area =

214.51 ft2 AutoCAD Figure 24 Above EL 974'-8":

Cross section area =

842.67 ft2 32'L x 26'-4"H Gross cross section =

1,057.18 ft2

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 42 of 52 Room width =

63.67 ft gross cross section x room width Gross void volume =

67,310.65 ft3 does not account for dividers Total divider volume =

2,333.00 ft3 from concrete volume calculation Net void volume =

64,977.65 ft3 gross void volume - tot divider volume East Wall:

Cutout area (ea) =

48.00 ft2 6' x 8' Wall thickness =

2.00 ft Void vol per cutout =

96.00 ft3 Number of cutouts =

6.00 Tot void volume =

576.00 ft3 Circ Water Pumps:

75" dia. penetration area

=

30.68 ft2 Ceiling thickness =

1.50 ft Penetration void volume

=

46.02 ft3 Floor area =

105.00 ft2 15' X 7' Void height =

7.00 ft Void volume ea. =

735.00 ft3 Tot void vol ea. =

781.02 ft3 Penetration + sump void Qty =

3.00 Total void volume =

2,343.06 ft3 E rooms @ EL 970:

Floor area per bay =

95.92 ft2 AutoCAD Figure 21 Void height =

31.00 ft EL 970' to 1001' Void volume per bay =

2,973.52 ft3 Number of bays =

6.00 Total void volume =

17,841.12 ft3 TOTAL VOID VOLUME:

177,560 ft3 6.5.5 Concrete Volume SW room @ EL 994'-6" floor volume =

399.69 ft3 9.83' x 20.33' x 2' S room @ EL 985'-0" floor volume =

773.23 ft3 9.83' x 39.33' x 2' Walls #1 to 6 (See Figure #):

Wall #1 cross sectional area =

2,171.00 ft2 AutoCAD Figure 25

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 43 of 52 Wall thickness =

2.83 ft Wall #1 concrete volume =

6,151.17 ft3 Wall #2 cut sectional area =

184.72 ft2 AutoCAD Figure 22 Wall height =

26.33 ft EL 974'-8" to 1001' Tunnel penetration =

144.00 ft3 8'x8'x2'-3" Wall #2 concrete volume =

4,720.29 ft3 Accounts for tunnel penetration Wall #3 cross sectional area =

1,799.98 ft2 AutoCAD Figure 26 Wall thickness =

2.33 ft Wall #3 concrete volume =

4,199.95 ft3 Wall #4 cut sectional area =

71.61 ft2 AutoCAD Figure 22 Wall height =

6.50 ft EL 994'-6" to 1001' Wall #4 concrete volume =

465.47 ft3 Wall #5 cut sectional area =

17.00 ft2 AutoCAD Figure 22 Wall height =

9.50 ft EL 985' to 994'-6" Wall #5 concrete volume =

161.50 ft3 Wall #6 cut sectional area =

128.44 ft2 AutoCAD Figure 22 Wall height =

16.00 ft EL 985' to 1001' Wall #6 concrete volume =

2,055.04 ft3 Total wall concrete volume =

17,753.41 ft3 Structure foundation:

South:

Cross sectional area =

608.83 ft2 AutoCAD Figure 23; does not account for sump pits Fdn width =

66.00 ft Fdn volume =

40,182.78 ft3 Cir water void volume ea. =

-781.02 ft3 Number of sumps =

3.00 Total sump void volume =

-2,343.06 ft3 Net Fdn volume South =

37,839.72 ft3 North:

Cross sectional area =

916.55 ft2 AutoCAD Figure 28 Fdn width =

13.17 ft Fdn volume North =

12,070.96 ft3 Total foundation volume =

49,910.68 ft3 East Walls:

Cut section area =

252.75 ft2 AutoCAD Figure 22; includes dividers at river Wall height =

31.00 ft EL 970' to 1001' Cutout void volume =

576.00 ft3 From void volume calc Net wall volume =

7,259.25 ft3 Wall volume - void volume Northeast Walls:

Cut section area =

45.75 ft2 AutoCAD Figure 22

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 44 of 52 Wall height =

26.00 ft EL 975' to 1001' Cutout void volume =

48.00 ft3 6'x8' Net wall volume =

1,141.50 ft3 Wall volume - void volume Dividers:

Divider area (ea) =

126.04 ft2 Height =

6.17 ft measured at middle of divider Divider volume (ea) =

777.67 ft3 Number of dividers =

3.00 (2) full + (2) half Total divider volume =

2,333.00 ft3 FLOOR/FDN CONCRETE VOLUME:

51,084 ft3 TOTAL CONCRETE VOLUME:

79,571 ft3

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 45 of 52 6.5.6 Figures Figure 21 - Intake Structure Elevations

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 46 of 52 Figure 22 - Intake Structure Wall Cut Section Areas Figure 23 - Southern Portion of Intake Structure Fdn; Cut Section Looking North

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 47 of 52 Figure 24 - Intake Structure Cut Section Looking North - Void Space Figure 25 - Wall #1 Cross Sectional Area

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 48 of 52 Figure 26 - Wall #3 Cross Sectional Area Figure 27 - Sump Pit Floor Area Figure 28 - Northern Portion of Intake Structure Fdn; Cut Section Looking North

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 49 of 52 6.6 Linear Footage Figures The following figures demonstrate what walls were considered in the linear footage totals for each structure. Refer to the corresponding calculation section of the report for more details.

Figure 29 - Aux Building Linear Footage

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 50 of 52 Figure 30 - Containment Linear Footage

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 51 of 52 Figure 31 - Circ Water Tunnels Linear Footage

FC-20-006 Revision 0 FCS Bldg End State Concrete Surface Areas & Volumes Page 52 of 52 Figure 32 - Intake Structure Linear Footage