Amendment 0006.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

The subject solicitation for Flood Control, Amite River and Tributaries, Comite River Basin, Comite River Diversion Project Comite River Diversion Structure, East Baton Rouge Parish, Louisiana, has been amended as follow s:

1. Re-Establish the date and time of the bid submission deadline to Monday, 08 September 2025 at 10:00am local time.

2. Re-Establish the date and time of the bid opening to Monday, 08 September 2025 at 1:00pm local time.

3. Reopen the opportunity for bidder questions, limited to the contents of Amendment 0006 only. The deadline for question submission is Friday, 29 August 2025 at 2:00pm local time.

4. All other changes show n on the attached continuation pages.

All other terms and conditions remain unchanged. Please acknow ledge this amendment, as w ell as all other amendments on your SF1442 submission w ith your bid.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 71

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 27-Aug-2025

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street , County, State and Zip Code) X W912P825B0037

X 9B. DATED (SEE ITEM 11)

10-Jun-2025

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer X is extended, is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

27-Aug-2025

CODE

CONTRACTING DIV- CHIEF

7400 LEAKE AVENUE, ROOM 172

NEW ORLEANS LA 70118-3651

W912P8 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

MISCELLANEOUS:

Insert bidder questions and Government responses.

Insert lump sum bid quantities.

SPECIFICATIONS:

PROJECT TABLE OF CONTENTS

Page PTC-I, 5thSheet. Delete the Project Table of Contents in its entirety and substitute the attached revised “Project Table of Contents” with new Section 02 41 00, DEMOLITION and Section 31 37 00.01 12, GROUTED RIPRAP added.

SECTION 00010

Page 00010-3 thru 5. Delete the Bidding Schedule in its entirety and substitute the attached revised Bidding Schedule, page 00010-3 thru 6.

Instructions to Bidders page: Delete the Instructions to Bidders page in its entirety and substitute the attached revised Instructions to Bidders page.

SECTION 00700

Page 3, paragraph 3 CONTRACT DRAWINGS AND SPECIFICATIONS. At the end of this paragraph, delete the table in its entirety and substitute the revised table as follows:

Title File Number Drawing No.

Flood Control, Amite River and Tributaries, LA, Comite River Basin, Comite River Diversion Project, Comite River Diversion Structure, East Baton Rouge Parish, Louisiana

H-4-48326 G-001 thru G-005; H-101; B-100 thru B-108, B-110; C-101 thru C-103, C-201, C-202, C-301 thru C-321, S-401 thru S-405, S-601, S-602; C-105; C-322 thru C-329, C-106; C-203, C-204, C-330 thru C-335, C-401, C-402, C-501, C-502, C-107, C108, C-411 thru C-419, C-503 thru C-508, C-509 thru C-513; R-101 thru R-104, R-104A, R-104B, R-105 thru R-111; REF-101, and REF-102

SECTION 01100

Page 22, paragraph 23 EXISTING FACILITIES. Delete subparagraph “(j) Maintenance of Flow” in its entirety and substitute the revised subparagraph (j) as follows:

“(j) Maintenance of Flow. The Contractor shall at his own cost, maintain the flow of existing sewers, drains, and water courses, including drain pipes scheduled to be modified, within the project limits during the progress of the work, and shall immediately cart away and remove all offensive matter. Contractor shall allow existing drainage flow directly into the active work area and pump it out past the east end of the project (to Comite River). The entire procedure of maintaining existing flow shall be fully discussed with the Contracting Officer's Representative well in advance of the interruption of any flow and a plan shall be submitted to the Contracting Officer's Representative for approval. Pavement removal and replacement which, in the opinion of the Contractor, is necessitated by placement of temporary flow control facilities shall be considered as an item for convenience to the Contractor. Such costs for pavement removal and replacement shall, therefore, be borne by the Contractor at his own cost as required for other flow control measures. Pavement removal shall be limited to the least amount possible, and the Contractor shall investigate alternative methods for flow control which require the least amount of pavement removal.”

Page 26, paragraph 28 JOINT RISK MANAGEMENT. Add the new paragraphs “29 DAMAGED STRUCTURES AND ROADWAYS”, “30 MAINTENANCE MOWING”, and “31 TEMPORARY DRAINAGE CROSSINGS” after paragraph 28.

“29. DAMAGED STRUCTURES AND ROADWAYS

Any roadways damaged by the Contractor's negligence shall be removed, replaced, and/or repaired at his/her expense, as directed by the Contracting Officer. The Contractor shall coordinate the work with the Contracting Officer's Representative.

These existing buildings, fences, pavement, and other structures are located very close to the construction and damages to these structures may occur due to construction operations, construction vehicular traffic, de-watering, vibrations, sheeting (driving and withdrawal), excavation, etc. To minimize the possibility of damages to these structures, the Contractor shall use the following procedures and/or guidance:

(a) Monitoring Dewatering (Pumping Operations). A dewatering plan shall be submitted to the Contracting Officer's Representative for approval. The dewatering plan shall address the requirements set forth in Section 31 23 19.00 12 "DEWATERING". The Contractor shall provide sufficient personnel, equipment, and controls to minimize pumping of water within the excavated area of the channel.

(b) Monitoring Pile Driving Operations. The Contractor shall provide some form of vibration monitoring plan during construction operations, specifically during driving of the steel h-piles and the sheet piling.”

“30. MAINTENANCE MOWING

Maintenance mowing shall be performed within the project limits of construction.

Mowing and weed eating shall be performed when the grass and weeds exceed 8 inches in height.”

“31 TEMPORARY DRAINAGE CROSSINGS

The Temporary Culvert and Low water crossings shall be Contractor designed, furnished, maintained, and removed by the Contractor after completion of all work under this contract and before final acceptance thereof. The low water crossings shall be designed such that flows for a 1-year storm event will not obstruct the existing Comite River. The lower water crossing shall be removed when the National Weather Service issues a flash flood advisory or issues a forecast that exceeds the 1-year storm event. The anticipated flow requirements for the Temporary Culvert Crossings at White Bayou are shown on the drawings. No separate measurement will be made for designing, furnishing, maintaining, and removing the temporary culvert and low water crossings. Payment will be made at the contract job price for "Temporary Drainage Crossings". Price and payment shall constitute full compensation for furnishing all plant, labor, materials, and the use of all equipment and tools required to complete the work. Rainfall rates are referenced from the NOAA ATLAS 14-point precipitation frequency estimates: LA – City of Zachary.”

Storm Frequency Rain Fall Rate Flow Rate Stage Elevation

1-year

4.3 (in/day)

1.92 (in/hr) cfs ft

2-year

5.03 (in/day)

2.18 (in/hr) cfs ft

10-Year

7.5 (in/day) 2.98(in/hr) cfs ft

SECTION 01 33 00

Submittal Register, pages 1 thru 7. At the end of Section 01 33 00 SUBMITTAL PROCEDURES, delete the Submittal Register in its entirety and substitute the attached revised “Submittal Register”.

SECTION 01 57 23.00 12

Page 4, paragraph 1.3.1 SWPPP. Delete the last sentence “Price and Payment …” of this paragraph and substitute the revised sentence as follow:

“Price and payment shall constitute full compensation for furnishing the design, plant, labor, equipment, and materials including all operations necessary for the placement, maintenance, removal, and disposal of silt fences as required to complete the work as specified herein and as shown on drawings.”

Page 10, paragraph 3.6 ADDITIONAL INFORMATION. Delete subparagraph “(b) Activity Sequence” in its entirety and substitute the revised subparagraph as follows:

“(b) Activity Sequence. The anticipated construction sequencing is listed on Plan Sheet C-102 and C-103. The Contractor can submit alternative or additional construction sequencing for review and approval by USACE.”

SECTION 02 41 00

Add the new attached “Section 02 41 00 DEMOLITION” in its entirety after Section 01 78 02.00 10, CLOSEOUT SUBMITTALS.

SECTION 31 00 00

Page 5, paragraph 1.3.2.5 Payment. Delete this paragraph and title in its entirety and substitute the revised paragraph “1.3.2.5 Semi-Compacted Fill” and new paragraph “1.3.2.6 Embankment (Compacted Fill)” as follows:

“1.3.2.5 Semi-Compacted Fill

Payment for semi-compacted fill material placed including additional material placed by reason of foundation settlement will be made at the applicable contract unit price per cubic yard for "Semi-Compacted Fill (Drainage Ditch)" or "Semi-Compacted Fill - (OW)", if Optional Work is exercised.” Price and payment shall constitute full compensation for furnishing all plant, labor, employ of professional engineering services, equipment, and material (except earth material), all testing, hauling, foundation preparation, material processing for moisture control and blending, placing, and compacting the material, and other incidental work. No payment will be made for embankment construction above the required grades.”

“1.3.2.6 Embankment (Compacted Fill)

Payment for embankment, compacted fill material placed, including additional material placed by reason of foundation settlement will be made at the applicable contract unit price per cubic yard for "Embankment, Compacted Fill” or "Embankment, Compacted Fill - OW", if Optional Work is exercised. Price and payment shall constitute full compensation for furnishing all plant, labor, employ of professional engineering services, equipment, and material (except earth material), all testing, hauling, foundation preparation, material processing for moisture control and blending, placing and compacting the material, testing, and other incidental work required to complete the work. No payment will be made for embankment construction above the required grades.”

Page 14, paragraph 1.10.1 General. Delete this paragraph in its entirety and substitute the revised paragraph “1.10.1 General” as follows:

“1.10.1 General

The semi-compacted fill material shall be constructed of earth obtained from the Contractor required excavation of the Comite River, Comite River Diversion Channel and the drainage ditch as prescribed herein and to the extent shown on the drawings.

The embankment, compacted fill shall follow the requirements as described below.”

Page 15, paragraph 1.10.3 Dressing. Add new paragraph “1.10.4 Embankment, Compacted Fill” and subsequent paragraphs in their entirety after paragraph 1.10.3.

“1.10.4 Embankment, Compacted Fill

1.10.4.1 Moisture Control

The Contractor shall control the moisture content of the compacted fill embankment material. The optimum moisture content shall be determined in accordance with paragraph "General", subparagraph (10). The Contractor shall perform the necessary work in moisture control to bring the excavated material within the moisture content range specified in paragraph "Compaction".

Excavated material is considered too wet to be placed directly upon the embankment compacted fill footprint, if it has a moisture content greater than 10 percentage points above the optimum moisture content resulting from the Standard Proctor Compaction Test ASTM D698. If the excavated material is too wet, it shall either be stockpiled onsite and allowed to drain and/or the wet material shall be processed by disking and harrowing, if necessary, until the moisture content is reduced sufficiently, before being placed within the embankment section. When it is discovered that wet fill has been placed over existing embankment or newly constructed compacted fill footprint, the incident layer and previous layer will be tested in a minimum of two locations for density and moisture compliance. If the top or contact surfaces of a partially filled section becomes too wet to permit suitable bond between these surfaces and the additional backfill to be placed thereon, the wet material shall be scarified and permitted to dry, assisted by disking or harrowing. The material shall be recompacted in accordance with the applicable requirements of paragraph "Compaction".

Excavated material is considered too dry to be placed directly upon the embankment compacted fill footprint, if it has a moisture content greater than 5 percentage points below the optimum moisture content resulting from the Standard Proctor Compaction Test ASTM D698. If the excavated material is too dry, it shall be prewet in the source area, before being placed within the embankment section. If the top or contact surfaces of a partially filled section becomes too dry to permit suitable bond between these surfaces and the additional fill to be placed thereon, the Contractor shall loosen the dried materials by scarifying, disking, or other approved methods, and shall recompact this layer in accordance with the applicable requirements of paragraph "Compaction". No additional payment will be made for any moisture control required in this paragraph.”

1.10.4.2 Compaction

The first and each successive layer of compacted fill material shall be compacted to at least 95 percent of maximum dry density as determined by ASTM D698 (Standard Proctor Compaction Test) at a moisture content within the limits of plus 3 to minus 2 percentage points of optimum moisture content determined from ASTM D698. If the compacted embankment material tests outside these limits, the Contractor must re-process the already-placed material to either dry out material that tests greater than 3 percentage points above the optimum moisture content or add moisture to material that tests less than 2 percentage points below the optimum moisture content and then place and compact the processed material per the specification.”

Page 16, paragraph 3.1 EXCAVATION. Delete this paragraph in its entirety and substitute the revised paragraph “3.1 EXCAVATION” as follows:

“3.1 EXCAVATION

All excavation shall be performed to the lines, grades and elevations shown on the drawings. Material excavated from the Comite River Diversion Channel and drainage ditch shall be used as fill material, where applicable. Excavation below the lines and grades specified or the depth indicated shall be backfilled by the Contractor at his/her expense. Such backfill shall be brought to grade with suitable material with each layer placed and compacted as specified. Excavate unsuitable materials encountered within the channel side slopes below grade and replace with suitable materials as directed. During construction, perform excavation and fill in a manner and sequence that will provide proper drainage at all times.”

Page 17, paragraph 3.5 STOCKPILE EMBANKMENT CONSTRUCTION. Insert the following sentence after the 1st sentence of this paragraph.

“The existing stockpile embankments are shown on Plan Sheet R-104A and R-104B.”

Page 19, paragraph 3.10 HAULING. Delete this paragraph in its entirety and substitute the revised paragraph “3.10 HAULING” as follows:

“3.10 HAULING

Any material to be removed from the site, including debris, or any material to be hauled between sites shall be hauled in watertight trucks with secured binders on tailgates to the place of destination. Access and Haul roads shall be located as indicated on the drawings and as approved by the Contracting Officer's Representative. Prior to the commencement of construction, the Contractor shall submit for approval a site plan detailing the location(s) of all haul roads for the project.

They shall be designed to maintain the intended traffic and be free draining and maintained in good condition throughout the contract period. Trucks shall not spill or track mud on public roads. The Contractor shall take immediate action to clean up any material spilled on the roads without notification from the Contracting Officer.

Failure by the Contractor to satisfactorily clean public roads used for the hauling operations shall result in the suspension of hauling operations until such roads used are cleaned to the satisfaction of the Contracting Officer.”

31 05 19.04 12

Page 4, paragraph 2.1 GEOTEXTILE, TABLE 1. In the 2nd line of Table 1 “Elongation (Grab), delete “60 percent minimum” and substitute “15 percent minimum”.

Page 6, paragraph 3.2.2 Laps. Delete this paragraph in its entirety and substitute the revised paragraph “3.2.2 Laps” as follows:

“3.2.2 Laps

Comite River and Diversion Channel Geotextile panels placed along the centerline shall be overlapped a minimum of five (5) feet with the upstream panel on top of the downstream panel. Geotextile panels for the access roads, asphaltic pavement, and other locations shown on the drawings shall be overlapped a minimum of three (3) feet.”

SECTION 31 23 19.00 12

Page 2, paragraph 1.2 MEASUREMENT AND PAYMENT. Delete the 2nd sentence “Payment for dewatering…” in its entirety and substitute the revised sentence as follows:

“Payment for dewatering will be made at the contract job price for "Construction Dewatering".

SECTION 31 37 00.01

Add the new attached “Section 31 37 00.01 12 GROUTED RIPRAP” in its entirety after Section 31 23 19.00 12 DEWATERING.

SECTION 31 41 16.16 12

Page 2, paragraph 1.4.1 Furnishing and Delivering Vinyl Sheet Piles. In the 1st sentence, delete payment item “Furnish Vinyl SG-425 Sheet Piles” and substitute “Furnish Vinyl SG-825 Sheet Piles”.

Page 3, paragraph 1.4.2 Driving Vinyl Sheet Piles. In the 1st sentence, delete payment item “Drive Vinyl SG-425 Sheet Piles” and substitute “Drive Vinyl SG-825 Sheet Piles”.

Page 7, paragraph 2.2 SHEET PROPERTIES. Delete the minimum properties table in its entirety and substitute the revised table as follows:

Sheet Pile Location

Allowable Moment

(ft-lbs./ft.)

Section Modulus (in^3/ft.)

Moment of Inertia (in^4/ft.)

Thickness (in.)

Depth (in.)

Width (in.)

Diversion Structure

Slab

9,787 36.7 220 0.485 12 30

Page 8, paragraph 3.1.2. Delete this paragraph in its entirety and substitute the revised paragraph “3.1.2 Driving” as follows:

“3.1.2 Driving

All piles shall be driven to the depths shown on the drawings and shall extend to the cut-off elevation indicated. A tolerance of 1½ inches above or below the indicated cut-off elevation will be permitted. Pilings shall be driven by approved methods so as not to subject the pilings to damage and to ensure proper interlocking throughout their lengths. Pile hammers shall be maintained in proper alignment during driving operations by use of leads or guides attached to the hammer. A protecting cap shall be employed in driving, when required, to prevent damage to the tops of pilings.

Pilings damaged during driving or driven out of interlock shall be removed and replaced. All piles shall be driven without the aid of a water jet, unless otherwise authorized. Adequate precautions shall be taken to ensure that piles are driven plumb. On each day of sheet pile driving, the Contractor shall stab only the number of piles that can be driven to grade by the end of the day, and all piling stabbed shall be driven to grade by the end of each working day except that the last two piles may remain tapered up to receive the next days piles. No pile shall be driven to a lower elevation than those behind it in the same run except when the piles behind it cannot be driven deeper or in areas where there will be wall penetrations or obstructions are encountered. In this case, piling will be allowed to remain above final grade until the obstruction is removed or the penetration is completed. Alternately, if it is determined that an obstruction cannot be removed, the Contractor shall make such changes in design alinement of the pile structure as may be deemed necessary by the Contracting Officer to insure the adequacy and stability of the structure. Payment for the additional labor and materials necessitated by such changes will be made at the applicable contract prices to which the work is incidental thereto. If the piling next to the one being driven tends to follow below final grade, it may be pinned to the next adjacent piling. The Contractor is advised that buried stumps or similar debris may be encountered periodically on the sheet pile wall alignment and appropriate consideration should be given to hard driving conditions should they occur. Piles shall not be driven nor pulled within 100 feet of concrete less than 7 days old nor within 30 feet of concrete less than 28 days old.”

SECTION 32 15 00.01 12

Page 4, paragraph 3.3.2 Pipeline Protection. In the 12th line of this paragraph “operations will be measured” insert the word “not” after “will”.

SECTION 32 31 26

Page 2, paragraph 1.1 Barbed Wired Fencing. Delete this paragraph and title in its entirety and substitute the revised paragraph “1.1.1 Barbed Wire Fencing” as follows:

“1.1.1 Barbed Wire Fencing

Measurement for barbed wire fencing will be made by the linear foot acceptably installed. Payment will be made at the contract unit price per linear foot for "Barbed Wire Fencing". Price and payment shall constitute full compensation for furnishing all labor and materials, and other work incidental for the removal and installation of the fencing; all as specified herein and as shown on the drawings.”

SECTION 32 92 19.04 12

Page 3, paragraph 1.1 SCOPE. Delete this paragraph in its entirety and substitute the revised paragraph “1.1 SCOPE” as follows:

“1.1 SCOPE

The work specified herein consists of the furnishing all plant, labor, equipment, and materials, and performing all operations necessary for establishment and maintenance of turf on areas as specified herein and as indicated on the drawings.

The Contractor shall be required to repair and turf any disturbed or non-growth areas of the completed work area prior to acceptance. Turf will be considered established when the areas to be turfed have produced the required grass species in accordance with paragraph "ESTABLISHMENT".”

SECTION 33 40 00

Page 3, paragraph 1.2.4 Bedding. Delete this paragraph in its entirety and substitute the revised paragraph “1.2.4 Bedding” as follows:

“1.2.4 BEDDING

Measurement for the bedding material will be made by the ton. Payment for the bedding material to be placed below the new reinforced concrete pipe will be made at the contract unit price per ton for "Bedding Stone (Drainage Ditch)". Price and payment shall constitute full compensation for furnishing all plant, labor, materials, and equipment required to complete the work as specified herein and as shown on the drawings.

SECTION 35 20 18

Page 2, paragraph 1.2 MEASUREMENT AND PAYMENT. Delete this paragraph in its entirety and substitute the revised paragraph “1.2 MEASUREMENT AND PAYMENT” as follows:

“1.2 MEASUREMENT AND PAYMENT

Measurement for flap gates will be made by each one satisfactorily installed.

Payment will be made at the contract unit price per each for "54" DIA. Aluminum Flap Gates". Price and payment shall constitute full compensation for furnishing all plant, labor, materials, and equipment to install the flap gates and their appurtenances;

including making connections to the new drainage pipes; as specified herein and as shown on the drawings.”

SECTION 35 31 19.04 12

Page 2, paragraph 1.3.2 Riprap. Delete this paragraph in its entirety and substitute the revised paragraph “1.3.2 Riprap” as follows:

“1.3.2 Riprap

Payment for channel riprap will be made at the applicable contract unit price per ton for "Channel Riprap, R-1500", "Channel Riprap, R-90", "Channel Riprap, R-3500 - (OW)", "Channel Riprap, R-1500 - (OW)", Channel Riprap, R-200 - (OW)", or "Channel Riprap, R-90 - (OW)", if Optional Work is exercised. Price and payment shall constitute full compensation for furnishing all plant, labor, materials, and equipment for testing, hauling, handling, stockpiling, placing, and maintaining the riprap stone, until final acceptance by the Contracting Officer; and all work incidental thereto. Deductions from payment in an amount considered equitable by the Contracting Officer will be made if the riprap is contaminated with soil, dirt, or refuse.”

DRAWINGS:

SHEET IDENTIFICATION. Delete drawing Nos. G-002, G-003, G-004; B-110; C-102, C-103, C-106, C-203, C-204, C-307, C-308, C-309, C-310, C-313, C-314, C-315, C-334, C-335, C-401, C-501, C-502, C-503; S-401, S-402, S-403, S-404, S-405, S-601, S-602; R-104A, and R-104B in their entirety and substitute the attached revised SHEET IDENTIFICATION Nos. G-002, G-003, G-004; B-110; C-102, C-103, C-106, C-203, C-204, C-307, C-308, C-309, C-310, C-313, C-314, C-315, C-334, C-335, C-401, C-501, C-502, C-503; S-401, S-402, S-403, S-404, S-405, S-601, S-602; R-104A, and R-104B.

Add the attached new drawing SHEET IDENTIFICATION Nos. C-509, C-510, C-511, C-512, C-513, REF-101, and REF-102.

Solicitation # W912P825B0037, Flood Control, Amite River and Tributaries, Louisiana, Comite River Basin, Comite River Diversion Project, Questions and Clarifications

QUESTIONS AND CLARIFICATIONS RECEIVED ON JUNE 27TH, 2025:

1. Can USACE provide quantity breakdowns for the following LS items.

a.CLIN 0003, b. CLIN 0004, c. CLIN 0006, d. CLIN 0013, e. CLIN 0030 (OW), f. CLIN 0035 (OW)

USACE Response: The Lump Sum quantities has been included within this amendment.

2. Can USACE provide more recent borings than what is provided on B-101 from 1992?

USACE Response: The soil borings included within the advertised set of plans is the most recent data.

3. Per borings on B-101, can USACE provide table key for SIS material noted on borings?

USACE Response: Refer to the “DESCRIPTIVE SYMBOLS” table on Plan Sheet B-100 for the definition of the “SIS” referenced on the boring logs.

4. The borings identify material lenses within the excavation limit of the diversion channel and bayou Baton Rouge rock chute that could result in slope failures during/after aggregate placement at or near the full section thickness.

a. Has the government performed slope stability analysis on the design for these features of work?

USACE Response: Yes.

b.If so will these be provided to the contractor so any required over excavation/backfill or rework can be quantified for bedding stone subgrade prep. in CLINs 0025, 0027 and 0039?

USACE Response: No. The Contractor will be responsible for any design.

5. Per note on C-307 – C-321, Excess excavated material shall be hauled off-site by contractor:

a.Can USACE provide an estimated haul off QTY?

USACE Response: The estimated haul off quantities can be calculated by using the quantities shown in the bidding schedule and using the cross sections shown in the drawings.

b.Can USACE provide an estimated stockpile QTY for North (25.17 AC) and South (34.33 AC)?

USACE Response: Stockpile details is provided within this amendment.

c.Will contractor be able to haul material to stockpile under or across LA 67 Plank Rd? Or will the only access be via MCHUGH Rd?

USACE Response: The Contractor will be allowed to transport material across LA Hwy 67 to the Stockpiles west of LA Hwy 67 as shown on Plan Sheet R-104A. Access under the Hwy 67 bridge will not be allowed as part of this project.

d.If excess material is needed to be hauled off site, will BOL / Material Transfer agreement be required for the large quantities?

USACE Response: No.

6. Due to the complexity of PLA’s, can USACE consider extending the bid date to allow contractors to negotiate PLA with local authorities?

USACE Response: Solicitation was issued back on 10 June 2025 with PLA clauses included. Bid opening date will be close to 3 months after solicitation issuance. This is vast ample time to negotiate PLA’s with local authorities.

7. Can USACE provide dwg detail with Clearing & Grubbing Zones identified. Contractor Take-off is significantly higher than USACE qty provided in Base & OW.

USACE Response: A drawing detailing the clearing and grubbing areas is provided within this amendment.

8. Per Spec section 31 41 16.16 12, section 3.1.2: “All piles shall be driven without the aid of a water jet, unless otherwise authorized.” After speaking with the Manufacture, the plumbness of piles spec will be near impossible to meet without use of Mandrel. Will USACE allow the use of a Mandrel for installing these sheets?

USACE Response: The use of a mandrel for driving the vinyl sheet piling (piles) is permitted.

9. Additionally, given the soil borings onsite the SG-425 sheets are not rigid enough to guarantee 1/8” per feet plumbness. The manufacturer recommends no more than 20’ SG-425 sheets. Will alternate sheets or steel sheets be acceptable?

USACE Response: The sheet pile specifications has been updated within this amendment.

10. Per dwg S-402 at STA 17+50, the SG-425 Sheet Pile Lengths are 26’-6”. Per dwg S-403 at STA 22+00, the SG-425 Sheet Pile Lengths are 44’-3 ¾”. Per detail 4 S-401, the SG-425 sheets are called out to be 20’ long at each end of the diversion structure. Can USACE please confirm sheet lengths and locations?

USACE Response: The sheet piling extends a minimum of 18’-0” below the flat slab at the upstream and downstream concrete channel and extends horizontally up the side slopes a minimum of 5’-6” beyond the exterior steel H-pile. Extending the sheet piling up the side slopes will result in lengths greater than the minimum length of 18’-0”. Sheets S-402 and S-403 note the required sheet pile lengths.

11. Per 32 92 19.04 12, Section 2.1.5: “Water, applied during establishment and irrigation of grass on the Stockpile Embankments from a water source other than municipal water supply shall be analyzed by a certified water analysis laboratory.” Will the contractor be able to use water out of the existing diversion canal or the Comite River?

USACE Response: Yes

12. Will there be any test pile or PDA required for driving of Steel H-Pile?

USACE Response: No

13. Will temporary Dams be allowed to facilitate excavation and placement of rock for tie-in at STA 26+60?

Or will this tie-in be required to be made “in the wet”?

USACE Response: The Contractor, as part of their means/methods, may utilize a temporary dam for construction of work features. The temporary dams shall be designed and stamped by a licensed Professional Engineering company and be submitted to USACE for review and approval, prior to construction in the field.

14. Will the contractor, with an approved Traffic Control Plan, be allowed to reduce speed in work zone along plank road? DOTD USACE Response: Yes. This shall be included in the Contractor’s Traffic Control Device Plan submitted to USACE and LADOTD for review and approval.

a. Additionally with use of temporary traffic signals be allowed on Plank Road to facilitate highway crossings?

USACE Response: Yes. See response to Q&A#14.

15. For dewatering:

a.How many Piezometers will be required for monitoring?

USACE Response: The estimated # of piezometers required shall be determined from the Contractor Designed Dewatering System.

b.Can USACE provide geotechnical or site data for ground water / aquafier conditions?

USACE Response: No c.Can USACE provide preliminary dewatering design similar to what was previously provided for recent Comite Diversion projects? i.e. number of pumps, timeframes, and number of well points?

USACE Response: The dewatering plan, including number of pumps, timeframes, and number of well points, shall be designed and determined by the contractor.

d.Per Sheet B-110, the dewatering system shows to be implemented around the Diversion Structure only. Is dewatering required / necessary for construction of the Diversion Channel or Ditches?

USACE Response: No.

16. Can USACE provide QTY breakdowns for OW Excavation? Using End Area Volume (EAV) method on provided cross sections, the Excavation QTY for Channel Diversion, Comite River, and North Tributary are drastically different than the Bid QTY.

USACE Response: The quantities have been updated and is provided within this amendment.

17. Please provide the dimensions of Concrete Sections A1 through A21 as per the table on sheet S-405.

USACE Response: Dimensions are provided within this amendment.

18. Please confirm the plan quantity of HP12 x 53 piling.

USACE Response: The quantities are provided within this amendment.

19. Please provide the Government’ estimated quantities for “Job” items.

USACE Response: The quantities are provided within this amendment.

20. Please confirm that the contractor will be allowed to place additional construction joints, in combination with those shown on the drawings, for constructability of the structure.

USACE Response: Yes. The Contractor will be required to submit this as part of their submittal procedures for review and approval by USACE prior to construction.

21. Will mechanical splices be allowed in lieu of lapping rebar at construction joints?

USACE Response: Yes.

22. Please confirm that a stabilization slab is not required.

USACE Response: A stabilization slab is not required for the construction of the Diversion Structure.

23. Specification section 31 62 16.00 12, paragraph 2.1 states “Splicing of the H-piles shall be required.”

USACE Response: If the piles cannot be furnished in full length, splicing of the H-piles will be required.

24. Can H-piles be furnished and installed full length?

USACE Response: Yes.

25. Please confirm that the steel h-piles do not receive a coating.

USACE Response: The steel H-piles do not receive a coating.

26. Will there be any DOTD surface resistivity requirements for the structural concrete?

USACE Response: No.

27. Could this project accept the DOTD specs for air which are 2-7% instead of 5-7%?

USACE Response: Air content in concrete shall conform to Specification Section 03 31 00.00 12, paragraph 2.2.3, “Air Content”.

28. As a heads up, we cannot utilize a 48" gate in this application. 48" RCP has an OD of ~55", and it'll be important that the anchor bolts for the gate frame do not conflict with the pipe wall. Therefore, Can we quote a 54" gate in lieu of the 48"?

USACE Response: Yes. Plan Sheet C-502 will be updated and included within this amendment.

29. Is Barbed wire fencing to remain after the project is completed (permanent or temporary?)

USACE Response: The barbed wire security fencing is a permanent feature.

30. Section 33 40 00 "Storm Drainage Utilities" Part 1, Note 1.2.4 "Bedding" refers to a 57 limestone for RCP Bedding Material to be used for the contract unit price per ton for CLIN 0025 "Bedding Stone (Drainage Ditch) however, Note 2.2.9 in that same Section states that pipe bedding should conform to section 35 31

19.04 12 "Riprap and Bedding Construction" which contradicts Note 1.2.4 by requiring a larger stone ranging from 1/4" to 3" in Note 2.1.1 "Bedding". Please confirm which material is to be utilized as bedding material for RCP pipe as well as make up the material for CLIN 0025.

USACE Response: The reference to #57 limestone will be removed from Paragraph 1.2.4. Updated Paragraph

1.2.4 are included within this amendment.

31. The Plans provided have pages R-105 through R-111 which indicate the Utility Layouts required and has details for powerline installation. Please confirm that all power utilities are to be scheduled and installed by the owner and not part of this package.

USACE Response: See EXISTING UTILITIES table on R-111. All existing utilities are designated as DND (Do Not Disturb). Installation of new utilities, including power, will not be included in this contract. They are shown for informational purposes only.

32. For CLIN 0036 "Asphalt Paving", please confirm the location in which asphalt paving is to be performed specification section in which details the acceptable mix types.

USACE Response: Two (2) asphaltic paving entrances are anticipated as part of the contract. The asphaltic paving entrances are intended to facilitate entering and exiting the project site, via the access roads, onto Hwy

67. The locations are shown on Plan Sheet R-104 within the Construction Access Locations.

See Specification Section 32 12 16.00 12 for asphaltic pavement requirements.

33. Please provide anticipated quantities for each LS CLINS items (0004, 0006, 0030).

USACE Response: See response to Question #1 above.

34. Please provide a Suggested Construction Sequence.

USACE Response: The required construction phasing is detailed in Note 5 on Plan Sheets C-102 and C-103.

Spec Section 01 57 23.00 12, Paragraph 3.6(b), Activity Sequence, have been revised and are included within this amendment.

35. Please provide a Dewatering Plan for the dewatering of the Comite River Construction?

USACE Response: The work required at the Comite River shall be performed in the wet. If the Contractor feels it necessary to include/construct a TRS, earthen dam, and/or temporary drainage in order to complete this work, the costs associated with this work shall be included as part of their means and method (mob and demo).

36. Please provide a CLIN item for the Grouted Riprap on the project with a quantity.

USACE Response: Concur. A separate CLIN item for Grouted Riprap has been added to the bid schedule and included within this Amendment.

37. Please provide a traffic control plan.

USACE Response: The Contractor will be responsible for development of the Traffic Control Device Plan per Spec Section 01 55 26.00 12, Traffic Control and Coordination.

38. Can the RFI deadline be extended to past the site visit date?

USACE Response: No.

39. How does the Corp plan to mitigate traffic control on Plank Rd for stockpile locations?

USACE Response: Refer to the Government response to Q&A #37.

40. Can you please provide a line item for stockpile locations? Do we have to degrass prior to adding excavated materials? Is seeding / turf establishment required on stockpiled areas? If so, can you please provide an anticipated acreage?

USACE Response: Stockpile details will be included in the forthcoming amendment. Contractor shall follow the requirements in Specification Section 31 00 00, paragraph 3.5, “Stockpile Embankment Construction”.

41. Will USACE review the historical safety record of any or all bidders when awarding this contract?

USACE Response: Under FAR Part 14 procedures, bids are evaluated without discussions and award is made to the lowest responsive, responsible bidder. As part of the responsibility determination under FAR 9.104, USACE may review a bidder’s safety record to assess whether the bidder has a satisfactory record of integrity and business ethics, which includes compliance with safety requirements.

42. If so, what kind of safety record violations will disqualify the bidder(s)?

USACE Response: Each bidder’s safety record will be evaluated on a case-by-case basis, considering the nature, frequency, and severity of any violations, as well as corrective actions taken.

43. Will USACE review any or all bidder’s OSHA violation record?

USACE Response: Yes. In accordance with FAR 9.104-1(d), USACE may review a bidder’s OSHA violation history as part of the responsibility determination to ensure the bidder has a satisfactory record of integrity, business ethics, and compliance with safety requirements. While FAR Part 14 requires award to the lowest responsive, responsible bidder, a pattern of serious or willful OSHA violations may impact the responsibility determination. Each case will be reviewed on its individual merits, including any corrective actions taken.

44. Will USACE disqualify a bidder based on their record of termination for default on projects of similar size and scope?

USACE Response: USACE does not automatically disqualify a bidder based on a prior termination for default.

However, in accordance with FAR 9.104-1(c) and (d), a termination for default on projects of similar size and scope may be considered during the responsibility determination to assess whether the bidder has a satisfactory performance record and a satisfactory record of integrity and business ethics. The circumstances of the default, including any corrective actions taken and performance since the termination, will be evaluated on a case-by-case basis.

45. Will USACE disqualify a bidder based on their OSHA violation record?

USACE Response: See below response to Q&A#43.

46. Will USACE disqualify a bidder based on a historical record of non-payment for parties associated with USACE projects?

USACE Response: USACE will not automatically disqualify a bidder based solely on their historical record of non-payment. However, in accordance with FAR 9.104-1(d), a bidder must have a satisfactory record of integrity and business ethics, which includes compliance with applicable safety and health regulations. A history of serious, repeated, or willful OSHA violations may be considered during the responsibility determination to assess whether the bidder is responsible. Each case is reviewed individually, taking into account the nature and severity of the violations and any corrective actions taken.

47. Will USACE disqualify a bidder based on lawsuits filed against the bidder for non-payment outside of USACE projects?

USACE Response: USACE will not automatically disqualify a bidder based solely on lawsuits filed for non-payment on non-USACE projects. However, under FAR 9.104-1, all bidders must be determined responsible prior to award. This includes having a satisfactory record of integrity and business ethics. If there is evidence that such lawsuits indicate a pattern of unethical business practices or financial instability, they may be considered as part of the responsibility determination. Each situation will be reviewed on a case-by-case basis, including the context and resolution of any legal actions.

48. Will USACE disqualify a bidder based on liens filed against the bidder for non-payment?

USACE Response: USACE will not automatically disqualify a bidder based solely on the existence of liens filed for non-payment. However, under FAR 9.104-1(a), a bidder must be determined responsible prior to award, which includes having adequate financial resources and a satisfactory record of integrity and business ethics.

Liens may be reviewed as part of this responsibility determination if they raise concerns about the bidder’s financial condition or business practices. Each case will be evaluated individually, considering the nature, frequency, and resolution of the liens.

49. Will USACE enforce the bonding requirements found on 12a and 12b of the SF1442?

USACE Response: In accordance with FAR 28.102-1 and FAR 14.404-2(i), USACE requires timely submission of performance and payment bonds after bid acceptance and before contract award. Failure to provide the required bonds within the timeframe specified in the solicitation may result in the bidder being found nonresponsible or the bid being rejected. While the government may consider a short extension under extenuating circumstances, such extensions are not guaranteed and will be evaluated on a case-by-case basis in the best interest of the government.

50. Will USACE grant an extension to a potential awardee who cannot submit a P&P bond within the specified time frame?

USACE Response: See second half of response to previous question.

51. If so, what is the process in which to request the extension?

USACE Response: If a potential awardee anticipates difficulty submitting the required performance and payment bonds within the specified timeframe, the contractor should promptly notify the Contracting Officer in writing before the submission deadline expires. The request should include: A clear explanation of the reason for the delay, the anticipated date by which the bonds can be provided, any supporting documentation from the surety company or bonding agent. The Contracting Officer will review the request and determine whether an extension is warranted based on the circumstances and the government’s interests. It is important to submit the request as early as possible since extensions are granted at the sole discretion of the government and are not guaranteed.

52. Will USACE require bidders to have their NIST score entered into SPRS per CMMC 2.0 requirements?

USACE Response: No

53. If so, what procedure will USACE implement to ensure this requirement is enforced?

USACE Response: See initial response

54. How will other bidders be able to discover whether or not other bidders have fulfilled this requirement?

USACE Response: See initial response

55. Can your office please confirm that all prospective bidders have submitted a NIST SP 800-171 Basic Assessment and posted a current score in the Supplier Performance Risk System (SPRS) prior to bid consideration, as explicitly required by the solicitation?

USACE Response: See initial response

56. Please provide bidders with estimated quantities on items of work for which bids are being solicited on a job basis.

USACE Response: Quantities are provided within this amendment.

57. Note 1 on Plan Sheet B-100 states “that borings are representative of subsurface conditions at their respective location and for respective vertical reaches. Local variations characteristic of the subsurface materials of the region are anticipated and, if encountered, such variations will not be considered as differing materially within the purview of contract clause, “Differing Site Conditions” of the Contract.” What extent of variations of subsurface materials should the Contractor anticipate where the “Differing Site Conditions” clause would not apply (i.e., what is the threshold for the application of “Differing Site Conditions”)?

USACE Response: The Contractor shall bid the project as shown within the Plans and Specifications.

58. Specification Section 31 00 00, Paragraph 3.2, Drainage, states “It is the responsibility of the Contractor to assess the soil and ground water conditions presented by the plans and specifications and to employ necessary measures to permit construction to proceed.” There is an insufficient number of soil borings in the actual construction corridor for the contractor to determine the necessary measures to permit construction, particularly in regards to the required dewatering. Please provide additional information on soil and ground water conditions.

USACE Response: No Construction Dewatering is required for the Comite River work. Two Soil Borings were taken within the area of the Diversion Structure and are included within the P&S.

59. Where are soil boring locations for CR-1 and CR-2U borings?

USACE Response: The lat and long coordinates have been provided for each soil boring on Plan Sheets B-101 and B-102.

60. There are no soil borings in the Comite River work limits. Can the USACE provide soil boring data for these referenced work limits?

USACE Response: There are no soil borings taken within the Comite River. All available soil borings are included within the Plans and Specifications.

61. There are no soil borings in the Comite River Diversion channel (optional work area limits). Can the USACE provide soil boring data for these referenced work limits?

USACE Response: No. Refer to the response to Q&A #58.

62. Can a bid item be added for Silt Fence to be paid for by the linear foot as was included on prior Comite bid?

USACE Response: A total length of silt fencing will be included on Plan Sheets R-104A and R-104B. The drawings are provided within this amendment.

63. Is silt fence required to be installed around the offsite stockpile areas? If so, will it remain in place upon the completion of the project?

USACE Response: Yes. The silt fencing will be required…