W912P525RA001 Amendment 0007 Changes_10JUL2025.pdf
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- Attached to
- Chickamauga Lock Replacement Approach Wall and Decommissioning Federal contract opportunity
- Solicitation number
- W912P525RA001
About this file
This document is Amendment 0007 to a federal solicitation (W912P525RA001) for the Chickamauga Lock Approach Wall and Decommissioning Project by the U.S. Army Corps of Engineers Nashville District. The amendment updates multiple technical specifications and contract documents, including revisions to sections covering price and payment procedures, special project procedures, quality control, commissioning, site development, concrete materials and placement, painting, instrumentation, electrical systems, and asphalt road construction.
The project involves constructing river and middle approach walls downstream from an existing lock, decommissioning the existing lock, wet commissioning of a new lock chamber, and site restoration. The estimated project price range is between $250,000,000 and $500,000,000, with anticipated award in the Fourth Quarter of Fiscal Year 2025. The contract will have a base and three options, is classified under NAICS code 237990 for Heavy and Civil Engineering Construction, and is set for full and open competition. Downstream approach walls will use pre-cast concrete beams fabricated in 2012, and the project includes constructing two 30-foot diameter mooring cells, plugging lock chamber culverts with concrete, and removing miscellaneous equipment and buildings.
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Text version
W912P525RA001
AMENDMENT 0007
Chickamauga Lock Approach Wall and Decommissioning
DESCRIPTION OF CHANGES
QUESTIONS
Government answers to questions received from Industry have been provided in Projnet Bidder Inquiry.
AMENDMENT 0006 CHANGES SHEET
Folio No. 5 - Contract Drawing 66W353-AWD “Exterior Elevations” was inadvertently included on the Amendment 0006 Changes Sheet as being revised and this should be ignored for Amendment 0006. This sheet was not revised in Amendment 0006, this drawing sheet was only revised via Amendment 0004.
TECHNICAL SPECIFICATIONS
All revised Specifications, new specifications, revised appendices, and new appendices have been merged into a single document (W912P5-25-R-A001_Am7_Contract Specifications_10JUL25)
1. SECTION 01 22 00 – PRICE AND PAYMENT PROCEDURES
a. Section 01 22 00 has been removed in its entirety and replaced with a revised Section 01 22 00.
i. Paragraph 1.3.3 Lead and Asbestos Abatement has been revised.
ii. Paragraph 1.4.2.19 “Demolition of Spillway Deck and Piers” has been revised.
iii. Paragraph 1.4.2.20 “Demolition and Disposal of Spillway Gate Sets” has been revised.
iv. Paragraph 1.4.2.21 “Demolition of Existing Lock Machinery” has been revised.
v. Paragraph 1.4.2.22 “Demolition of Existing Lock Operation’s Building” has been revised.
vi. Section 1.4.2.31 “Remediation and Restoration of the Electrical Service Room” has been revised.
vii. Paragraph 1.4.2.32 “Remediation and Restoration of the Hazmat Room” has been revised.
viii. The title of Paragraph 1.4.6.5 has been revised to add “Yellow”.
ix. Paragraph 1.4.6.6 “Painting – Approach Wall Beams – Touch Up” has been added.
2. SECTION 01 35 13 – SEPCIAL PROJECT PROCEDURES
a. Section 01 35 13 has been removed in its entirety and replaced with a revised Section 01 35 13.
i. Paragraph 1.5.3 Specific Sequencing has been revised.
3. SECTION 01 45 00 – QUALITY CONTROL
a. Section 01 45 00 has been removed in its entirety and replaced with a revised Section 01 45 00.
i. Paragraph 1.8.4.2 “Responsibilities” has been revised.
4. SECTION 01 91 13 – GENERAL COMMISSIONING
a. Section 01 91 13 has been removed in its entirety and replaced with a revised Section 01 91 13.
i. Clarified commissioning requirements for systems that are primarily GCFI and the contractor shall only provide limited material support for.
ii. Clarified the Commissioning Firm attendance for factory testing and training.
iii. Clarified the subcontracting relationship requirements for both electrical and mechanical commissioning and testing specialists.
5. SECTION 02 41 13 – SITE DEVELOPMENT DEMOLITION WORK AND RESTORATION
a. Section 02 41 13 has been removed in its entirety and replaced with a revised Section 02 41 13.
i. Paragraph 3.1.7 “Fixtures” has been added.
6. SECTION 03 30 01 – CONCRETE: MATERIALS
a. Section 03 30 01 has been removed in its entirety and replaced with a revised Section 03 30 01.
i. Paragraph 3.3.2.3.b “Frequency of Quality Tests” has been revised.
7. SECTION 03 30 02 – CONCRETE: MISTURE PROPORTIONING
a. Section 03 30 02 has been removed in its entirety and replaced with a revised Section 03 30 02.
i. Paragraph 1.5.1 “Concrete Mix Definitions” has been revised.
8. SECTION 03 30 04 – CONCRETE PLACEMENT REQUIREMENTS
a. Section 03 30 04 has been removed in its entirety and replaced with a revised Section 03 30 04.
i. Paragraph 3.7 “Hot Weather Requirements” has been revised.
9. SECTION 03 70 00 – CONCERETE: STRUCTURAL
a. Section 03 70 00 has been removed in its entirety and replaced with a revised Section 03 70 00.
i. Paragraph 1.6.2 “Pumpable Structural Concrete for the Bay 5 Shear Wall (Mix 7)” has been revised.
10. SECTION 09 97 02 – PAINTING: HYDRAULIC STRUCTURES
a. Section 09 97 02 has been removed in its entirety and replaced with a revised Section 09 97 02.
i. Paragraph 3.5 “Painting Schedules” has been revised.
11. SECTION 13 50 00 – INSTRUMENTATION
a. Section 13 50 00 has been removed in its entirety and replaced with a revised Section 13 50 00.
i. Paragraph 1.2.1 “Existing Segmental and Cellular Cofferdam Components” has been revised.
12. SECTION 26 20 00 – INTERIOR DISTRIBUTION SYSTEMS
a. Section 26 20 00 has been removed in its entirety and replaced with a revised Section 26 20 00.
i. Product and installation requirements for limit switches for the public address system pull chain stations have been added.
13. SECTION 32 12 16 – HOT-MIX ASPHALT HMA for ROADS
a. Section 32 12 16 has been removed in its entirety and replaced with a revised Section 32 12 16.
i. Paragraph 1.1 “Scope” has been added.
ii. Paragraph 2.2.4 and Table 4 have been revised.
iii. Paragraph 2.4 has been revised.
14. SUBMITTAL REGISTER
a. The Submittal Register has been removed for the sections that were changed and replaced with a revised submittal register.
CONTRACT DRAWINGS
The following contract drawing sheets were removed and replaced with revised contract drawing sheets:
1. Folio No. 1
a. 61W510-02-AWD “Construction Limits – Lay Down Areas”
b. 61W510-02D-AWD “Contract Base and Option – General Delineation”
c. 61W530-28-AWD “Slot Cutting Details – Sheet 2 of 2”
d. 61W530-43-AWD “Decommissioning Plans – Sheet 2 of 3”
e. 61W530-44-AWD “Decommissioning Plans – Sheet 3 of 3”
f. 61W530-51-AWD “Removal of Visitors Overlook and Oil Storage Building”
g. 61W530-54-AWD “Hazmat Storage Room”
2. Folio No. 2
a. 61W20-22-AWD “Folio 2 Drawing Index Site Development”
b. 61W510-02-AWD “Construction Limits – Lay Down Areas”
c. 61W510-02D-AWD “Contract Base and Option – General Delineation”
d. 61W525-01-AWD “Existing Site - Orientation”
e. 61W525-08-AWD “Existing Site - Orientation”
3. Folio No. 3
a. 15W275-AWD “Facilities Site – Power Plan”
b. 15W277-AWD “Facilities Site – Lighting Plan”
c. 15W278-AWD “Maintenance Storage Building and Electrical Service Rooms Plan”
d. 65W211D-AWD “Electrical – General Notes and Legend”
e. 65W812-AWD “Details and Section - Sheet 3 of 4”
f. 65W815-AWD “Raceway Schedule – Sheet 1 of 7”
g. 65W819-AWD “Raceway Schedule – Sheet 5 of 7”
h. 65W819A-AWD “Raceway Schedule – Sheet 6 of 7”
i. 65W870-AWD “Approach Wall Plans – Sheet 1 of 3”
j. 65W871-AWD “Approach Wall Plans – Sheet 2 of 3”
k. 65W872-AWD “Approach Wall Plans – Sheet 3 of 3”
l. 65W913-AWD “Misc. Schematic Diagram - Sheet 2 of 2”
m. 65W2701 “IP/PBX Bock Diagram”
n. 65W2702-AWD “Telco Riser Diagram”
o. 65W2705-AWD “External Paging System – Plans”
p. 65W2706-AWD “External Paging System – Bloc Diagram”
q. 65W2707-AWD “External Paging System – Details”
r. 65W2708-AWD “Communications – Cable Schedule – Sheet 1 of 2”
s. 65W2758-AWD “Facilities Site IDS Riser Diagram”
t. 65W3728-AWD “Approach Wall Partial Plans – Sheet 1 of 3”
u. 65W3729-AWD “Approach Wall Partial Plans – Sheet 2 of 3”
v. 65W3730-AWD “Approach Wall Partial Plans – Sheet 3 of 3”
The following contract drawing sheets were added to the set of contract drawings:
1. Folio 2
a. 61W525-08-AWD “TVA Power Break Existing Condition”
PRICE BREAKOUT SCHEDULE
1. Base Contract:
a. Contract Line Item 00-B006 “Lab Testing – Direct Shear” has been revised to update the quantity to 6 “each”.
b. Contract Line Item 00-E002 “Painting – Upstream Approach Wall Beams” title has been updated to “Painting – Upstream Approach Wall Beams – Yellow”.
c. Contract Line Item 00-E003 “Painting – Approach Wall Beams -Touch Up” has been added with a quantity of 445 “SF”.
2. Option 1:
a. Contract Line Item 01-Q002 “Lab Testing – Direct Shear” has been revised to update the quantity to
14 “each”.
b. Contract Line Item 01-T002 “Painting – Approach Wall Beams” has been added with a quantity of
772 “SF”.
FAR CLAUSES
1. DFARS 252.236-7001:
a. DFARS Clause 252.236-7001, Contract Drawings and Specifications has been revised.
2. FAR 52.252-3:
a. FAR Provision 52.252-3, Alterations in Solicitation, has been revised.
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