Amendment 0002.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 purpose if this amendment is to provide responses to RFIs and to provide amended specifications. All other terms and conditions remain unchanged.

1. CONTRACT ID CODE PAGE OF PAGES

1 4

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

16C. DATE SIGNED

BY 03-Sep-2020

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 W912WJ20B0022

X 9B. DATED (SEE ITEM 11)

14-Aug-2020

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

03-Sep-2020

CODE

US ARMY ENGR DISTRICT, NEW ENGLAND

696 VIRGINIA ROAD

CONCORD MA 01742-2751

W912WJ 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912WJ20B0022

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION 00100 - BIDDING SCHEDULE/INSTRUCTIONS TO BIDDERS

The following have been added by full text:

AMENDMENT 0002 RFI'S

1. The new stop logs required for servicing gate number 2, what is the overall height required? Is fiberglass acceptable?

Response: Stop logs must be placed from El. 805.5 to El. 845.5 (40ft total). As stated on S-301, stop logs shall be composite plastic timbers.

2. Are there any stop logs at the site for the hydro turbines?

Response: Stop logs are not required for the hydro gates. When shut, the hydro gates function as stoplogs for gates 1 and 3.

3. Does the government expect all of the hydraulic components to be removed from the site for inspection and serving? (Piston-Stem Assy./Bonnet/ Cylinder and Cylinder Head)

Response: Removal of hydraulic equipment is not prohibited, but also is not required by the contract. Contractor may utilize the means and methods which they see fit.

4. The 3” cast iron pipe repair, which is imbedded in concrete (5ft), how deep does the government anticipate the repair?

Response: As stated in Specifications section 35 15 00, Part 3.1, “For bidding purposes, the Contractor shall assume 4 inches of embedded pipe is deteriorated and in need of replacement.”

5. We have another question concerning the mobile crane required to install the stop logs on Gate No.

What is the radial distance for a mobile crane to reach Gate No. 2 slot from firm ground?

Response: The Gate 2 stop log slot cannot be accessed directly by mobile crane due to overhead obstructions. A portable gantry crane or other lifting method will be required.

6. Spec Section 01 11 00 1.6.4 Design Criteria.

The first sentence says to utilize the existing stem. Is this the intent or is it to be replaced?

Response: This section contained an error. Please see amended language which removes the stem from the list of existing equipment to be utilized.

7. Can the government say how the work for gate 1 is currently being completed without the use of a new bulkhead system? Or, can the government share current site photos and drawings of the bulkhead that the current contractor is using for the bulkhead or system that was used for gate 1 for that work. Also can the government specify why that system is not adequate for gates 2 or 3.

Response: Stop logs are not required for gates 1 and 3 due to the hydro gates. When shut, the hydro gates function as stoplogs for gates 1 and 3.

8. The design criteria for the work specifies for a VT engineer to design a new bulkhead and also for a VT engineer to sign off on certain plans of work.

Question, Can any PE licensed in any state be sufficient as the work is on federal land. This has been acceptable on other federal projects.

Response: The requirement has been relaxed. See amended language.

9. It appears from the site video there may be fall issues with the scope of work. The video showed plates covering from where the lowest elevation elevator point would be to get to the stairwell. At this location it appeared that if the plates are removed there is no access to the stairwell when utilizing the crane. Can the government please confirm if there is adequate safe access when the plates are removed and if the government has handrail that can be utilized when the plates are removed.

Response: The project has removable guardrails which are placed around the openings when covers are removed.

Revision to Specificaions

Specifications Section 01 11 00, Part 1.1, Paragraph 4

Original Language:

The work covered consists of the fabrication, shop assembly and testing, delivery, installation and site testing of two new stainless steel hydraulic vertical lift gates. Design drawings for the gates are attached as information drawings to the plans, and the complete design package with calculations will be furnished to the contractor after award. Also included is the furnishment and installation of stainless steel gate and frame seals compatible with both the existing gate frame and new gate, new gate stems, new compatible babbitt, as well as reassembly of the operating machinery, including the reassembly of the hydraulic control system, prior to new gate commissioning. The gate and accessories shall operate properly with minimal gate leakage as defined in the specifications. All embedded portions of the existing gate frame shall remain in place. Existing babbitt and side seals shall be removed.

Revised Language:

The work covered consists of the fabrication, shop assembly and testing, delivery, installation and site testing of two new stainless steel hydraulic vertical lift gates. Design drawings for the gates are attached as information drawings to the plans, and the complete design package with calculations will be furnished to the contractor after award. Also included is the furnishment and installation of bronze gate and frame seals compatible with both the existing gate frame and new gate, new gate stems, new compatible babbitt, as well as reassembly of the operating machinery, including the reassembly of the hydraulic control system, prior to new gate commissioning. The gate and accessories shall operate properly with minimal gate leakage as defined in the specifications. All embedded portions of the existing gate frame shall remain in place. Existing babbitt and side seals shall be removed.

Specifications Section 01 11 00, Part 1.1, Paragraph 6

Original Language:

Gate Removal - In order to remove two gates the contractor will need to disconnect the hydraulic control system and isolate each gate in turn. There is an overhead hoist that may be utilized to lift each gate to the top of the control tower. The operator of the hoist must be a Class 2 licensed operator and the operation is considered a critical lift.

Refer to the 1957 as-builts for details on the hoist and hydraulic system. Note that valves have been added to the hydraulic system such that each gate can be isolated from the other two. The Contractor shall take care to control and contain any hydraulic fluid leakage during this operation. Contractor shall prepare a Gate Removal Work Plan for government review. The plan shall outline the steps and procedures proposed for removing the gates, including stop log procedures as described below. The stop log installation and removal portion of the work plan shall be designed by a licensed professional engineer in the State of Vermont. The stop log system shall be designed for 212 feet of hydraulic head. The Contractor shall properly dispose of existing Gate #2 and #3 after all installation work has been completed. Any remaining paint on the existing gates is lead based and shall be handled and disposed of accordingly.

Revised Language:

Gate Removal - In order to remove two gates the contractor will need to disconnect the hydraulic control system and isolate each gate in turn. There is an overhead hoist that may be utilized to lift each gate to the top of the control tower. The operator of the hoist must be a Class 2 licensed operator and the operation is considered a critical lift.

Refer to the 1957 as-builts for details on the hoist and hydraulic system. Note that valves have been added to the hydraulic system such that each gate can be isolated from the other two. The Contractor shall take care to control and contain any hydraulic fluid leakage during this operation. Contractor shall prepare a Gate Removal Work Plan for government review. The plan shall outline the steps and procedures proposed for removing the gates, including stop log procedures as described below. The stop log installation and removal portion of the work plan shall be designed by a licensed professional engineer. The stop log system shall be designed for 212 feet of hydraulic head.

The Contractor shall properly dispose of existing Gate #2 and #3 after all installation work has been completed. Any remaining paint on the existing gates is lead based and shall be handled and disposed of accordingly.

Specifications Section 01 11 00, Part 1.6.2

Original Language:

The designer of the stop logs shall be a Registered Professional Engineer in the State of Vermont.

Revised Language:

The designer of the stop logs shall be a Registered Professional Engineer.

Specifications Section 01 11 00, Part 1.6.4

Original Language:

The new gates shall utilize the existing bonnet, bonnet cap, cylinder and stem. The new gates shall be fully compatible with the existing conduit geometry and operate properly within the existing gate frames. The new gates shall be constructed to ensure an adequate connection to the existing stem that is similar to the existing lift gates.

Revised Language:

The new gates shall utilize the existing bonnet, bonnet cap, and cylinder. The new gates shall be fully compatible with the existing conduit geometry and operate properly within the existing gate frames. The new gates shall be constructed to ensure an adequate connection to the existing stem that is similar to the existing lift gates.

(End of Summary of Changes)