SHIMMICK CONSTRUCTION COMPANY, INC.

THIS MODIFICATION PARTIALLY COMPENSATES THE CONTRACTOR FOR COSTS IN REA-0009, SPECIFICALLY ADDRESSING A DESIGN/SPECIFICATION DEFECT. THE ORIGINAL SPECIFICATION REQUIRED SHOTCRETING A 6-FOOT TRENCH WITHIN 6 HOURS OF EXCAVATION.

CL154-2 RFI-768 SHEAR WALL DESCOPE VS ELECTRICAL CREDIT AND CL254-1 MITER GATE PRODUCTION FILLET WELD SIZE INCREASE (UCO PART 1) ARE ENTERED INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES.

A00083 CL250-1 GALLERY POWER PANEL UCO PART 1 AND CL258-1 CULVERT VALVE MACHINERY GREASE LINES UCO PART 1 ARE ENTERED INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. THE TOTAL CONTRACT PRICE IS INCREASED BY $135,000.00 FROM $313,911,834.86 TO $314,046,834.86. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED AT JANUARY 27, 2026.

MODIFICATION A00082 CL196, CL237, CL240, CL249, AND CL256 IS ENTERED INTO UNDER THE AUTHORITY OF FAR 52.243-4 CHANGES AND FAR 52.211-18 VARIATION IN ESTIMATED QUANTITIES. THE CONTRACT PRICE IS INCREASED BY $271,400.55. THERE IS NOT TIME EXTENSION ASSOCIATED WITH THIS CHANGE.

IMPLEMENTS UNILATERALLY CONTRACT CHANGES CL139, CL167, AND CL208-2 PURSUANT TO THE AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $123,682.00. COMPLETION DATE REMAINS UNCHANGED AT JANUARY 27, 2026.

PAYS CONTRACTOR FOR ENGINEER AND DAM SAFETY SUBMITTAL NEEDED TO COMPLY WITH USACE POLICY. REDUCES PAYMENT FOR DRILLED PIERS DUE TO LOCATIONS BEING OUT-OF-TOLERANCE BUT STILL FUNCTIONAL.

A00080 - CL095, CL175, CL188, CL202-2, CL234, AND CL239

CONTRACTING OFFICER REQUIRED CONTRACTOR TO HEAT CONSTRUCTION JOINT CONCRETE TO 50 DEGREES.

ADJUSTS RIP RAP QUANTITIES TO MATCH AMOUNT PLACED AND ADJUSTS PRICE.

CHANGES ROUTE FOR DRAINAGE FROM BEHIND TRAINING WALL.

COMPENSATES CONTRACTOR FOR REVISING GRADING PLAN AT BORROW PIT DUE TO 2 DIFFERING SITE CONDITIONS

REMOVES PASSING PERMEABILITY TESTING AS REQUIREMENT FOR ACCEPTANCE ALLOWS KTR TO USE ADDITIONAL CONCRETE TO MAKE UP FOR UNEVEN SUBGRADE REPLACES 6" PIPE WITH 4" PIPE DUE TO UNEVEN SUBGRADE.

A00002 - VEQ-TRANSFORMER-DISCONNECT - ET006 AND ET007

ADDITIONAL WORK REQUIRED TO DEMO CONCRETE IN TRENCH WHICH WAS NOT IDENTIFIED IN THE PLANS

IMPLEMENT CHANGES CL(214-2, 230, 232, 233-2, 235, 236) INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES AND 52.211-18 VEQ. TOTAL CONTRACT PRICE IS INCREASED BY $234,473.48 TO $313,464,894.38. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED.

DALE HOLLOW SPILLWAY GATE MACHINERY CONTROL REHAB - EXERCISE OPTIONS 11 AND 12 FOR NEW CONDUIT RUNS.

REMOVAL OF CONCRETE PLACED IN TRENCHES AS EMERGENCY BACKFILL DUE TO HIGH WATER

IMPLEMENT CHANGE CL186-2 INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $17,202.40 FROM $313,213,218.50 TO $313,230,420.90. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED AT JANUARY 27, 2026.

CT TFCF TRASH RAKE MONORAIL STRUCTURE

IMPLEMENT MISC. CHANGES INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $66,734.84 FROM $313,146,483.66 TO $313,213,218.50. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED AT JANUARY 27, 2026.

MODIFICATION TO IMPLEMENT CHANGES FOR CL231 VEQ REINFORCING STEEL AND REBAR PLACEMENT PURSUANT TO AUTHORITY OF FAR 52.211-18 VARIATION IN ESTIMATED QUANTITY.

PILE ORIENTATION SURVEY

EXTRA GRAVITY BLOCK CONCRETE PLACED TO HOLD SAND LAYER THAT WAS THICKER THAN SHOWN IN BORINGS.

PROVIDES ANCHORS TO SUPPORT SHOTCRETE IN A TRENCH

IMPLEMENT CL233-1 INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $10,000.00 FROM $311,658,104.63 TO 311,668,104.63. THE CONTRACT COMPLETION DATE REMAINS AT JANUARY 27, 2026.

A00001-ELECTRICAL ASBESTOS ABATEMENT-ET004

APRON OVERLAY

IMPLEMENT MISC. CHANGES INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES AND FAR 52.211-18 VEQ. TOTAL CONTRACT PRICE IS INCREASED BY $236,053.34 FROM $311,422,051.29 TO $311,658,104.63. THE CONTRACT COMPLETION DATE REMAINS AT JANUARY 27, 2026.

APRON OVERLAY

IMPLEMENT CHANGES CL(144, 219-1, 220-1) INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $20,924.25 FROM $311,401,127.04 TO $311,422,051.29. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED AT JANUARY 27, 2026.

APRON OVERLAY

MODIFICATION TO INCORPORATE SETTLEMENT AGREEMENT AND ADD THE DPAS RATING DO-C2 TO THE CONTRACT FOR LONG LEAD ITEMS TO FACILITATE MEETING SCHEDULE DELIVERY.

CL135 UNSOLICITED CONCRETE PROPOSAL IS ENTERED PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. THE CONTRACT COMPLETION DATE REMAINS AT JANUARY 27, 2026.

EXTRA MUD MAT CONCRETE WAS NEEDED DUE TO EXTRA EXCAVATION OF UNSOUND SHALE FOUNDATION.

CL208-1, CL214-1 ARE ENTERED PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $110,000.00 FROM $275,005,931.65 TO $275,115,931.65. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED AT JANUARY 27, 2026.

COMPENSATES CONTRACTOR FOR ADDITIONAL DEMO WORK PERFORMED DUE TO ERROR IN DRAWINGS.

ADDITIONAL CORROSION PROTECTION FOR EXPOSED PORTION OF ROCK DOWELS

IMPLEMENT CHANGES CL183, CL187, CL194-2 & CL217 INTO PURSUANT AUTHORITY OF FAR 2.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $174,303.36 FROM $274,831,628.29 TO $275,005,931.65. CONTRACT COMPLETION DATE REMAINS UNCHANGED AT JANUARY 27, 2026.

IMPLEMENT CHANGES CL215 PURSUANT TO FAR 52.243-CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $251,053.88 FROM $274,580,574.41 TO $274,831,628.29. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED AT JANUARY 27, 2026.

IMPLEMENT CHANGES CL187 & CL211 PURSUANT TO FAR 52.243-CHANGES AND CL212 PURSUANT TO FAR 52.236-2 DIFFERING SITE CONDITIONS. CONTRACT PRICE IS INCREASED BY $437,016.54 TO $274,580,574.41. CONTRACT COMPLETION DATE REMAINS UNCHANGED AT JANUARY 27, 2026.

CHANGES BATTEN STRIP TO SECURE GEOMEMBRANE, COMPENSATES CONTRACTOR FOR ADDITIONAL GRAVEL BACKFILL, CREDIT FOR NOT HYDROSEEDING COFFERDAM SLOPE.

DALE HOLLOW SPILLWAY GATE RECOATING - EXERCISE OPTIONS 5, 6, AND 7.

IMPLEMENT CHANGES CL195, CL201 AND CL213 PURSUANT TO FAR 52.243-CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $1,685.83 FROM $274,141,872.04 TO $274,143,557.87. THE CONTRACT COMPLETION DATE IS REMAINS UNCHANGED AT JANUARY 27, 2026.

INCREASE QUANTITY MORE CONCRETE NEEDED TO BE GRINDED BEYOND WHAT WAS SHOWN IN THE CONTRACT.

IMPLEMENT CHANGES CL130 (DESCOPE OPTION 12) AND CL141 (MITER GATE GFE DRAWINGS) PURSUANT TO FAR 52.243-CHANGES. CHANGES CL123 (QMB SHOTCRETE CLOSEOUT) AND CL131 (M1 SPILLWAY DOWELS) PURSUANT TO FAR 52.211-18-VEQ.

CL154-1 RFI-0768 IS ENTERED PURSUANT TO FAR 52.243-4 CL216 IS ENTERED PURSUANT TO FAR 52.249-10. CONTRACT PRICE IS INCREASED BY $25,000.00 TO $275,423,627.23. CONTRACT COMPLETION DATE IS EXTENDED BY TEN CALENDAR DAYS TO JANUARY 27, 2026.

REPLACE ADDITIONAL SECTION OF CONCRETE APRON.

ADDS CHAMFERED EDGES TO CONCRETE WALL EXTENSION

IMPLEMENT CHANGES CL153, CL206 PER AUTHORITY OF 52.211-18 AND CHANGES CL179, CL197 PER AUTHORITY OF FAR 52.243-4. TOTAL CONTRACT PRICE IS INCREASED BY $355,507.67 TO $275,398,627.23. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED AT JANUARY 17, 2026.

IMPLEMENT MISC. CHANGES INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $135,677.23 FROM $274,907,442.33 TO $275,043,119.66. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED AT JANUARY 17, 2026.