A21 - W912P820B0014 AM0003.pdf

OM-20-275

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 Mississippi River, Baton Rouge to Gulf of Mexico, Southw est Pass Maintenance Dredging Non- Continuous Mile 6.0 AHP to Mile 19.5 BHP, Cutterhead Dredge No. 1-2020. Plaquemines Parish, Louisiana has been modified to post response to questions received on 10 August 2020. See follow ing pages for the Q&Rs.

1. CONTRACT ID CODE PAGE OF PAGES

1 4

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

16C. DATE SIGNED

BY

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 W912P820B0014

X 9B. DATED (SEE ITEM 11)

14-Nov-2019

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 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.

AM0003

5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

14-Aug-2020

CODE

USACE, CONTRACTING DIVISION

ATTN: CEMVN-CT, ROOM 172

7400 LEAKE AVE.

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:

W912P820B0014

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 30 - SF 30 CONTINUATION

The following have been added by full text:

AM0003 - QUESTIONS & RESPONSES

1. This Contract is for both maintenance and new construction of the Mississippi River, however the required production rates are no different from the Contracts for maintenance only. Considering the material has never been dredged before, and there is no geotechnical information provided, Bidders have no way of knowing if their equipment will perform at the required production rates. For all new work dredging, would the Owner consider making these reaches non-standard, so the Contractor will not be expected to perform new-work at the same production rate as maintenance work?

Response: Portions of the channel currently exist or have previously existed at the new construction elevation as elevations greater than -56 ft MLLW have been surveyed. Historical surveys can be ascertained by accessing the following website: https://www.mvn.usace.army.mil/Missions/Navigation/Channel-Surveys/. A hopper dredge will be used to dredge typical hopper locations.

Add the following to the end of Paragraph 3.4a, Section 35 20 23.23 12:

This paragraph is applicable to those periods when the dredge is performing maintenance dredging work.

This mode occurs when a dredge under this contract or another contract has already dredged the reach to an assigned elevation of -56.0 ft MLLW. Assignments will detail if the reach or portion thereof is new construction work or maintenance work.

Add the following sentence to the end of Paragraph 3.4b, Section 35 20 23.23 12:

This paragraph applies to both maintenance and new construction work.

Add the following as paragraph 3.4c to Section 35 20 23.23 12:

c. The following table shows the minimum production rate the dredges must perform at as specified in Section 35 20 23.23, paragraph entitled “Required Production and Dredging Tolerances” when dredging new construction work. Interpolation between swing widths may be used to obtain production rate values not explicitly shown. New construction dredging is defined as the first time a reach has been dredged to an assigned elevation of -56.0 ft MLLW, either under this contract or another contract. Once a reach has been dredged to an assigned elevation of -56.0 ft MLLW, all successive assignments in that reach or portion thereof will be considered maintenance work and the table within 3.4a will be applicable.

NEW CONSTRUCTION MINIMUM PRODUCTION RATES

Face Height C/L Sta. 2867+32 to Sta.

169+89, Mile 6.0 AHP to Mile 2.0 BHP

C/L Sta. 169+89 to Sta.

381+05, Mile 2.0 BHP to Mile 6.0 BHP

C/L Sta. 381+05 to Sta.

1094+00, Mile 6.0 BHP to Mile 19.5 BHP Swing Width Swing Width Swing Width

200 ft 375 ft 200 ft 375 ft 200 ft 375 ft For cross-sectional quantity equal to

(4w+16s)/27 but not greater than (6w+36s)/27 cy/hr cy/hr cy/hr cy/hr cy/hr cy/hr

For cross-sectional quantity equal to or greater than (6w+36s)/27 cy/hr cy/hr cy/hr cy/hr cy/hr cy/hr

2. Given the timing of this, how does the Owner expect to coordinate work between the new-work Contracts and the maintenance Contracts?

Response: Multiple dredges will not be working in the same assignment area simultaneously.

3. Will contractors be assigned river reaches that have already been dredged to deepening depths prior (maintenance material only)? If so how will assignments for new work and maintenance dredging be divvied up between the multiple contracts?

Response: It is possible for contractors to be assigned reaches that have already been dredged to new construction elevations. Multiple dredges will not be working in the same assignment area simultaneously.

4. Can the Owner please provide an anticipated Award date for the Work, in order for Bidders to determine schedule availability?

Response: The contract for the work is anticipated to be awarded approximately 7 days after the successful bid opening.

5. Can the Owner please provide an anticipated NTP date for the Work, in order for Bidders to determine schedule availability?

Response: The Notice to Proceed is anticipated to be issued approximately 3 days after award.

6. Section 35 20 23.23 12, Paragraph 3.1.1.1.b states: “Channel material removed by hydraulic dredge from above Head of Passes to the jetty channel (Mile 6.0 AHP to Mile 19.5 BHP), shall be placed as directed by the Contracting Officer.” However, during the Mississippi River Forum on August 5th, 2020, it was mentioned that the SWP deepening contracts will have the possibility to dredge all the way up to Mile 13 AHP. Can the Owner confirm that for this Contract, the furthest upriver the Contractor can expect to dredge is Mile 6.0 AHP?

Response: The limits of work will not extend upriver of Mile 6.0 AHP.

7. Section 35 01 50.73, Paragraph 3.1.4.d states: “The Contractor shall remove, at no additional cost to the Government, any material in the navigation channel outside the area designated to be dredged if the material falls within the channel, and was not indicated on the before dredging survey (roll-effect downstream of the cutterhead dredge).” In times of high river stage, the roll effect has been observed multiple times by different dredges and Contractors, and it is inevitable if the river stage is high enough.

a. In times of high river stage, will the Owner please consider removing this requirement?

b. In times of high river stage, it is known that the Mississippi River can accumulate material quickly, especially near the Head of Passes area. If the Contractor is working on one side of the channel, and material accumulates on the other side of the channel due to a combination of the roll effect and natural Mississippi River accumulation, how does the Owner plan to differentiate between material built up due to the roll effect versus material that naturally accumulated?

c. Would the Owner please consider removing the words “at no additional cost to the Government” so that the Contractor is not expected to dredge the opposite side of the channel after a roll-effect occurs, for free, regardless of it was at the fault of the Contractor or not?

Response: If the Contractor’s dredge is creating the roll effect and the average velocity of the river at the dredge’s location is 5 mi/hr or greater measured by a velocity probe in accordance to the Government Representative, the Contractor will not be held to paragraph 3.4.1.d of Section 35 01 50.73. If the roll effect is created through the fault of the Contractor as determined by the Government during average river velocities of less than 5 mi/hr as measured by a velocity probe in accordance to the Government Representative, the Contractor shall remove, at no additional cost to the Government, any material outside the assigned dredging area.

Add the following as Paragraph 3.1.10 to Section 35 01 50.73:

3.1.10 Daily Surveys

To ensure any formation of a roll effect does not create a navigation issue, daily check sections in front of the dredge at 100 ft intervals up to 500 ft in front of the cutter and daily check profiles adjacent to and up to 500 ft of the cutter shall be performed and in accordance with the Government Representative. The cross sections and profiles shall extend 200 ft past the channel centerline onto the other half of the channel to provide adequate monitoring. Additional check sections and/or profiles may be required at the direction of the Government Representative.

8. If working in times of high river stage, and the Contractor elects to perform a high-bank face in 2 passes to reduce the roll effect, will the second pass be considered non-standard?

Response: If the Contractor’s dredge is creating the roll effect and the dredge’s swing and set are impacted by river currents and the average velocity of the river at the dredge’s location is 5 mi/hr or greater measured by a velocity probe in accordance to the Government Representative, the Contractor shall inform the Government and the Government will determine if performing the work in two passes is appropriate. If the dredge’s swing and set are impacted by river currents and the average velocity of the river at the dredge’s location is 5 mi/hr or greater measured by a velocity probe in accordance to the Government Representative, the reach for that day will be considered non-standard.

9. Will the Owner consider making a reach non-standard if there is over 13 ft of river stage in the Mississippi River at the location of dredging?

Response: If the dredge’s swing and set are impacted by river currents and the average velocity of the river at the dredge’s location is 5 mi/hr or greater measured by a velocity probe as directed by the Government Representative, the reach for that day will be considered non-standard.

(End of Summary of Changes)