Sol_140F0121R0033_Amd_0002.pdf

(x)

140F0121R0033 x x

1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted ; or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT 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 letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

x

F06

Lakewood CO 80228-1807

134 UNION BOULEVARD

LAKE PLAZA NORTH

FWS, DIVISION OF CONTRACTING AND GE

F01

PORTLAND OR 97232-4181

911 NE 11TH AVENUE

EASTSIDE FEDERAL COMPLEX

FWS, DIVISION OF CONTRACTING AND GE

21-04508/13/20210002

13. THIS ITEM ONLY APPLIES TO MODIFICATION OF CONTRACTS/ORDERS. IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

12. ACCOUNTING AND APPROPRIATION DATA (If required) is not extended.is extended, Items 8 and 15, and returning

Offers 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

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

FACILITY CODE CODE

10B. DATED (SEE ITEM 13)

10A. MODIFICATION OF CONTRACT/ORDER NO.

9B. DATED (SEE ITEM 11)

9A. AMENDMENT OF SOLICITATION NO.

CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code)

7. ADMINISTERED BY (If other than Item 6)CODE 6. ISSUED BY

PAGE OF PAGES

4. REQUISITION/PURCHASE REQ. NO.3. EFFECTIVE DATE2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO. (If applicable)

1. CONTRACT ID CODE

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

07/13/2021

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

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority) appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

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

ORDER NO. IN ITEM 10A.

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

See Page 2

Legacy Doc #: FWS

Period of Performance: 08/23/2021 to 01/28/2022

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)15A. NAME AND TITLE OF SIGNER (Type or print)

15C. DATE SIGNED 16B. UNITED STATES OF AMERICA 15B. CONTRACTOR/OFFEROR 16C. DATE SIGNED

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

Timothy Officer

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

Previous edition unusable

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

Solicitation Amendment

Document 140F0121R0033-0002

Document Title Houghton Dam Breach, Sand Lake NWR South Dakota Page 2 of 3

A. The purpose of this amendment is to respond to contractor questions, update the bid/proposal schedule, provide design data and extend the proposal due date. NOTE THE RESPONSE IN QUESTION 1.

B. The following contractor question and Government response are provided for consideration:

1. Contractor Question: There is a note stating that if the bottom slab of the existing spillway is at minimum breach depths it can stay, what is the elevation of minimum breach depth? Also if it is at the minimum breach depth and bottom of structure remains, what would happen with the future rip rap? It is stated that top of bottom of spillway is at

1285.2 and top of new rip rap is to be at 1282.5, what is would the plan be if existing concrete was left with the 3’ difference.

Government Response: The concrete base of the existing spillway slab can remain based on hydraulic analysis of the breach. If the contractor elects to leave the base of the spillway in place, we want them to install 24” of rip rap on the upstream, downstream of the base and along the banks of the breach. The “fill” bench and slopes below water on the downstream side of the breach do not need to be achieved in the field by the contractor, the natural bottom of waterway is considered sufficient.

2. Contractor Question: It is assumed that the water is around 1287 based on plan elevation of existing structure and the plan from talking with Robert is to not have to dam off the water. The existing toe is at 1270 (80’ out) and the new grade is shown to be

1282.5 which is 12.5’ of fill with no compaction requirement shown. Is the true intent to dam off the water which is currently 17’ deep?

Government Response: Recent measurements indicate that the base of the spillway is approximately EL 1285.2. Water levels at the spillway were measured to be approximately EL 1287.0.

3. Contractor Question: Can the excess excavation from the slopes be hauled off instead of being placed on the south side in the water as to not to disturb any existing elevations except the 8’ on each side of existing slab to allow for the 2.5’ of new rip rap and bedding to get it to the 30’ width?

Government Response: Excess soils from the excavated breach should be transported off site to an appropriate disposal site.

4. Contractor Question: How does the Government envision the water control be achieved via coffer dam, if so how is it to be installed?

Government Response: We would want construction to be completed at the lowest water surface elevation possible, and the idea would be to 1st excavate a channel to the east to allow river flows to pass around the structure. Then use a combination of bulk bags/aqua dams to divert water from the area they are directly working in. Knowing that we should only need about 3-feet of cofferdam, this will be a suitable plan. The bulk bags would likely be installed on both the upstream and downstream side. The riprap could be installed in the wet.

Solicitation Amendment

Document 140F0121R0033-0002

Document Title Houghton Dam Breach, Sand Lake NWR South Dakota Page 3 of 3

5. Contractor Question: Are temporary lab and site utilities required for this project?

Government Response: No temporary Lab or Utilities to be installed at the project.

However, they need to have communication abilities in the event that someone needs to call emergency services. Cell phones will suffice so long as cell service is available at the site. Portable lavatory should be installed on site and removed when project complete.

6. Contractor Question: What is there for testing responsibilities of the Contractor?

Government Response: No testing required for this project. QA will be achieved by post-excavation survey with statement that all elevations (above waterline) specified in the contract drawings were achieved. Survey to be signed and sealed by a South Dakota licensed surveyor.

7. Contractor Question: Is the preconstruction survey required for this project?

Government Response: No preconstruction survey required. They may rely on the Lidar information and topo in the contract drawings. If there is any discrepancy from the lidar and actual elevations, they should be reconciled by referencing areas outside of the disturbed/excavated areas and adjusting elevations based on averaging points beyond the project area.

C. The attached Redacted Final Design Submittal is provided for information only and shows supporting data used in developing the final design. Nothing in this attachment is intended to supersede the solicitation documents originally provided by this solicitation.

D. The attached Bid/Proposal Schedule is provided and incorporated to the solicitation and supersedes the initial one. A line for Item 10 - Signed Survey Confirming Limits of Excavation, was added to the Bid/Proposal Schedule.

E. The response due date and time is extended to Monday, 23 Aug 2021, 1900 hours local time. Please provide acknowledgement of this amendment.

F. All other terms and conditions remain unchanged.

Atch: 1. Redacted Final Design Submittal

2. Bid/Proposal Schedule