W912ES20B0005-0001 Amendment Montevideo 3B 29Mar21.pdf

W81G6791775151

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

See Page 2 for the purpose of Amendment 0001 to W912ES20B0005 Montevideo Stage 3B Flood Control Construction

1. CONTRACT ID CODE PAGE OF PAGES

1 4

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

16C. DATE SIGNED

BY 29-Mar-2021

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 W912ES20B0005

X 9B. DATED (SEE ITEM 11)

04-Mar-2021

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, X 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 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 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

29-Mar-2021

CODE

CONTRACTING DIVISION

USACE - ST PAUL

180 FIFTH STREET EAST

SUITE 700

SAINT PAUL MN 55101-1678

W912ES 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912ES20B0005

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 30 - BLOCK 14 CONTINUATION PAGE (SF 30)

The following have been added by full text:

AMENDMENT 0001

The purpose of Amendment 0001 is as follows:

1. Specification Section 01 00 00.00 13 GENERAL, paragraph 3.5 is changed

FROM: The Contractor shall coordinate with other contractors in the performance of the work and schedule such work to provide for a minimum of delays and interferences. Coordination shall be through the Contracting Officer. Other known contracts include:

W912ES17C011, Montevideo Flood Risk Management, Stage 3A

W912ES19CXXXX, Montevideo Flood Risk Management, Railroad Closure

TO: The Contractor shall coordinate with other contractors in the performance of the work and schedule such work to provide for a minimum of delays and interferences. Coordination shall be through the Contracting Officer. Other known contracts include:

W912ES20C0004, Montevideo Flood Risk Management, Railroad Closure

2. Specification Section 31 11 00 CLEARING AND GRUBBING, PART 1 GENERAL language is supplemented with the following:

The City of Montevideo has awarded a tree cutting contract to be completed before the Stage 3B construction contractor occupies the site. All trees within the permanent project easement (15 feet outward of final constructed features) will be cut down prior to construction. After trees are cut, they will be collected in bunches for off-site removal by the Stage 3B contractor. Disposal requirements for this debris are contained in this specification section.

3. Specification Section 33 32 18 SUBMERSIBLE PUMPS, Paragraph 2.3.1 IMPELLER is changed

FROM: The pumps impeller shall be ductile iron or cast iron as approved. The impeller shall be of the semi-open or non-clogging, two-vane design, suitable for passing minimum solids passage size of 3 inch compressible solids. The impeller shall have a slip fit connection onto the motor shaft, driven by a shaft key, and shall be securely fastened to the shaft by a screw and locking device. A positively engaged, ratcheting washer assembly shall prevent the screw from loosening. The head of the impeller screw shall be effectively recessed within the impeller bore to prevent disruption of the flow stream and loss of hydraulic efficiency. The impeller shall be dynamically balanced to provide smooth, vibration-free operation.

TO: Provide a ductile iron or cast iron impeller capable of passing 3 inch compressible solids. The impeller shall have a slip fit connection onto the motor shaft, driven by a shaft key, and shall be securely fastened to the shaft by a screw and locking device. A positively engaged, ratcheting washer assembly shall prevent the screw from loosening. The head of the impeller screw shall be effectively recessed within the impeller bore to prevent disruption of the flow stream and loss of hydraulic efficiency. The impeller shall be dynamically balanced to provide smooth, vibration-free operation.

4. Specification Section 33 32 18 SUBMERSIBLE PUMPS, Paragraph 2.3.2 SELF-CLEANING WEAR PLATE is changed

FROM: The wear plate shall be of duplex stainless steel, 1.4470 (ASTM A890, CD3MN Grade 4A).

The wear plate shall be designed with a smooth surface incorporating strategically placed intercepting slots on the side facing the impeller, to shred and force any stringy solids which attempt to become lodged between the impeller and wear plate outward from the impeller and through the pump discharge. The wear plate shall be mounted to the volute with four stainless steel securing screws and four stainless steel adjusting screws to permit close tolerance adjustment between the wear plate and impeller for maximum pump efficiency. Adjustment to allow for wear and restore peak pumping performance shall be easily accomplished using standard tools, and without requiring disassembly of the pump. The use of fixed or non-adjustable wear plates or rings, or systems that require disassembly of the pump or shimming of the impeller to facilitate adjustment are not acceptable. The suction flange shall be integrated into the wear plate and its bolt holes shall be drilled and tapped to accept standard 12 inch ANSI class 125/150 flanged fittings. Enclosed impeller designs which utilize a bronze or stainless steel wear ring securely fastened in the volute housing in lieu of a wear plate will be allowed.

TO: The wear plate shall be of duplex stainless steel, 1.4470 (ASTM A890, CD3MN Grade 4A).

5. PLAN SHEET CD101, GENERAL SHEET NOTE is attached with the following addition:

Tree cutting to be completed by others prior to construction. Coordinate removal of cut trees with the City of Montevideo. See Spec Section 31 11 00 Clearing and Grubbing for additional information on removal and disposal.

6. PLAN SHEET CD102, GENERAL SHEET NOTE is attached with the following addition:

7. PLAN SHEET CD102, KEYNOTE 6. is attached with the following addition:

6. Existing power pole to remain. Coordinate adjacent work with Xcel Energy, and as stated in the specifications.

8. PLAN SHEET CD103, GENERAL SHEET NOTE is attached with the following addition:

SECTION 00 10 00 - SOLICITATION

The Issued By organization has changed from

CONTRACTING DIVISION

USACE - ST PAUL

180 5TH STREET EAST

SUITE 700

ST. PAUL MN 55101-1678

to

CONTRACTING DIVISION

USACE - ST PAUL

180 FIFTH STREET EAST

SUITE 700

SAINT PAUL MN 55101-1678

(End of Summary of Changes)