W912P525RA001 Amendment 0004 Changes_29Apr2025.pdf
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- Chickamauga Lock Replacement Approach Wall and Decommissioning Federal contract opportunity
- Solicitation number
- W912P525RA001
About this file
This document is Amendment 0004 for the Chickamauga Lock Approach Wall and Decommissioning federal contract (W912P525RA001). The amendment introduces comprehensive updates across multiple technical specifications, including revisions to sections covering water diversion, concrete materials and placement, foundation drilling, steel setting, painting, electrical systems, and earth excavation. Key contract drawing sheets in multiple folios were replaced, and the price breakout schedule was adjusted, with updates to contract line items such as steel setting piles for riverside and landside walls and the addition of a "Diversion and Care of Water" line item.
The amendment also modified FAR clauses, specifically DFARS 252.236-7001 (Contract Drawings and Specifications) and FAR 52.252-3 (Alterations in Solicitation). These changes reflect ongoing refinements to the project specifications and requirements, which align with the broader U.S. Army Corps of Engineers Nashville District project for constructing river and middle approach walls, decommissioning the existing lock, and completing site restoration activities at the Chickamauga Lock site in Chattanooga, Tennessee.
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Text version
W912P525RA001
AMENDMENT 0004
Chickamauga Lock Approach Wall and Decommissioning
DESCRIPTION OF CHANGES
QUESTIONS
Government answers to questions received from Industry have been provided in Projnet Bidder Inquiry.
TECHNICAL SPECIFICATIONS
All revised Specifications, new specifications, revised appendices, and new appendices have been merged into a single document (W912P5-25-R-A001_Am4_Contract Specifications)
1. SECTION 01 57 24 – DIVERSION AND CARE OF WATER
a. Section 01 57 24 Diversion and Care of Water has been removed in its entirety and replaced with a revised Section 01 57 24.
i. Paragraph 1.1.1, Cofferdam, has been revised.
2. SECTION 02 20 20 – FLOWABLE FILL – CONTROLLED LOW STRENGTH MATERIAL (CLSM)
a. Section 02 20 20 Flowable Fill – Controlled Low Strength Material (CLSM) has been removed in its entirety and replaced with a revised Section 02 20 20.
i. Paragraph 1.2, Summary, has been revised.
3. SECTION 03 11 14 – CONCRETE: FORMWORK
a. Section 03 11 14 has been removed in its entirety and replaced with a revised Section 03 11 14.
i. Paragraph 1.7 Sample Pannels has been revised.
4. SECTION 03 30 01 – CONRETE: MATERIALS
a. Section 03 30 01 has been removed in its entirety and replaced with a revised Section 03 30 01.
i. Paragraph 2.10 Epoxy Resin has been revised.
ii. Table C has been revised.
5. 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 3.8 Special Temperature Controlled Concrete has been revised.
6. SECTION 03 41 34 – INSTALLATION OF GOVERNMENT FURNSIHED PRECAST CONCRETE
BEAMS
a. Section 03 41 34 has been removed in its entirety and replaced with a revised Section 03 41 34.
i. Paragraph 3.1.2.2.1.i Test Injection Results has been revised.
7. SECTION 09 90 00 – PAINTS AND COATINGS
a. Section 09 90 00 has been removed in its entirety and replaced with a revised Section 09 90 00.
i. Paragraph 1.1 Scope has been revised.
ii. Paragraph 3.13 Paint Tables has been revised.
8. 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 “System NO. 3-A-Z and 5-A-Z” has been revised.
9. SECTION 13 34 19.06 – METAL BUILDING SYSTEMS
a. Section 13 34 19.06 has been removed in its entirety and replaced with a revised Section 13 34 19.06.
i. Paragraph 3.4.13 Contractor’s Twenty (20) Year No Penal Sum Warranty has been revised.
10. 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. Paragraph 3.1.13.5 Grounding for Downstream Approach Piers has been revised.
11. SECTION 31 00 00 – EARTH EXCAVATION AND FILL PLACEMENT
a. Section 31 00 00 has been removed in its entirety and replaced with a revised Section 31 00 00.
i. Paragraph 1.4.10.1 Cohesive Material has been revised.
ii. Paragraph 1.4.19 Bay 5 Earthen Structure Excavation has been removed.
iii. Paragraph 3.13.4.2 Degradable Rock has been revised.
iv. Paragraph 3.7 Final Grade of Surfaces to Support Concrete has been revised.
12. SECTION 31 32 23 – FOUNDATION DRILLING AND GROUTING
a. Section 31 32 23 has been removed in its entirety and replaced with a revised Section 31 32 23.
i. Paragraph 3.6.1 General has been revised.
ii. Paragraph 3.7.1 General has been revised.
13. SECTION 31 63 15 – BAY 5 SHEAR WALL STRAND ANCHORS
a. Section 31 63 15 has been removed in its entirety and replaced with a revised Section 31 63 15.
i. Paragraph 3.2.7 Waterproofing Anchor Holes has been revised.
CONTRACT DRAWINGS
The following contract drawing sheets were removed and replaced with revised contract drawing sheets:
1. Folio No. 1
a. 61W510-02D-AWD “Contract Base and Option – General Delineation”
b. 61W510-121-AWD “Monolith M1 – Concrete – Sheet 1 of 3”
c. 61W520-53-AWD “Downstream Intermediate Piers Shell Structure, Reinforcement Details, Sheet
1 of 2””
d. 61W530-51-AWD “Removal of Visitors Overlook and Oil Storage Building”
e. 61W530-54-AWD “Hazmat Storage Room”
2. Folio No. 2
a. 61W525-22-AWD “Site Sign and Striping Plan”
b. 61W510-02D-AWD “Contract Base and Option – General Delineation”
3. Folio No. 4
a. 65W415A-AWD “120/208V Lighting Panelboard – Schedules – Sheet 2 of 2”
b. 61W785-AWD “Cable Schedule – Sheet 2 of 3”
c. 61W815-AWD “Raceway Schedule – Sheet 1 of 7”
d. 61W820-AWD “Lock Grounding System – Diagrammatic Single Line”
4. Folio No. 5
a. 66W353-AWD “Exterior Elevations”
PRICE BREAKOUT SCHEDULE
1. Base Contract:
a. Contract Line Item 00-D004 "Steel Setting Piles -Riverside Wall" has been updated to reflect the correct quantity of 470 Linear Foot.
2. Option 1:
a. Contract Line Item 01-P011 “Diversion and Care of Water” has been added with a quantity of 1 “job”.
b. Contract Line Item 01-S002 “Steel Setting Piles – Landside Wall” has been updated to reflect the correct quantity of 1,050 Linear Foot.
3. Option 3:
a. Contract Line Item 03-AH11 has been updated to provide reference to Contract Drawing Sheet 15W275-AWD Folio 4.
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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