12.c. Sol Amend 0003 RFP 70Z0G121RPRV162.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

1. CONTRACT ID CODE

PAGE OF PAGES

1 5

2. AMENDMENT/MODIFICATION NO.

3. DATE

17 SEP 2021

4. REQUISITION/PURCHASE REQ. NO.

5. PROJECT NO. (If applicable)

6. ISSUED BY CODE

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

Contracting Officer USCG Civil Engineering Unit 475 Kilvert St. Suite 100 Warwick, RI 02886

Same as block #6

8. NAME AND ADDRESS OF CONTRACTOR (NO., STREET, COUNTY, STATE AND ZIP CODE)

THIS AMENDMENT MUST BE

ACKNOWLEDGED WITH YOUR PROPOSAL

9A. AMENDMENT OF SOLICITATION NO.

70Z0G121RPRV16200

9B. DATED (SEE ITEM 11)

8/17/2021

10A. MODIFICATION OF CONTRACT/ORDER NO.

10B. DATED (SEE ITEM 13)

CODE FACILITY CODE

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

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

THE HOUR AND DATE SPECIFIED FOR RECEIPT OF PROPOSALS REMAINS 28 SEPTEMBER 2021 AT 4:00 P.M.

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 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 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 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 REFERENCED 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 1 copies to the issuing office.

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

1. The solicitation referenced in Block #9A is hereby amended as follows:

a. Questions and Answers are provided beginning on Page 2 in response to inquiries submitted by interested vendors.

2. THE HOUR AND DATE SPECIFIED FOR RECEIPT OF PROPOSALS REMAINS 28 SEPTEMBER 2021 AT 4:00 P.M.

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)

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

TERESA LAMPHERE

15B. CONTRACTOR/OFFEROR

15C. DATE SIGNED

16B UNITED STATES OF AMERICA

BY

16C. DATE SIGNED

NSN 7540-01-152-8070 STANDARD FORM 30 (Rev. 10-83)

Amendment 0003

RFP 70Z0G121RPRV16200

QUESTION #1: (reference Description of Work item ‘A’ on sheet G-002) is the contractor responsible to provide temporary power to the following equipment during the removal of the electrical equipment within the vestibule?

A. Generator B. Phone lines C. Fire alarm system.

D. Lantern/Beacon

CG RESPONSE:

A. No, temporary power for generator is not in scope of work. Construction phasing should plan for the least amount of time possible for outage of generator connection/panel as the station is prone to experience frequent outages.

B. Yes, currently the phone line for the Station is routed through the lighthouse a temporary phone line system is required. Equipment for the line is mounted on the north interior vestibule wall. Contractor is to remove equipment from the wall and reinstall after work is complete. This phone line must remain active. Contractor is allowed a max of 4hrs downtime to cut over primary phone system to the temporary system. Contractor is to notify COR of temporary cut over a minimum of 2 weeks in advance. The contractor is responsible for a temporary system which will not impede work or the use of the phone line throughout construction.

C. No, the fire alarm system within the vestibule does not require temporary power.

D. No, it is anticipated that the beacon will be turned off during the duration of the work. The Coast Guard will coordinate for a temporary beacon if it is required. Reference, specification section 01 14 00, 1.3, a. “Prior to disconnecting, obstructing, or interrupting service to any beacons, provide at least 7 day notice to the contracting officer.” Contractor shall include this shut off in construction schedule to be coordinated during pre-construction planning.

NOTE: For clarification purposes, reference Description of work item C on sheet G-002. “At Interior vestibule, temporarily uninstall electrical equipment/panels as needed to accomplish work. Demo and Dispose of wall mounted objects which are abandoned in place and/or not in use (conduit, brackets).” This is to include the abandoned switch board panel located at the ground floor of the lighthouse east wall, directly outside of the interior vestibule door, and the large black cords (approx. 1.5” diameter) which connects to the abandoned panel.

Reference photos P3, & P4 included with amendment.

Unless noted otherwise all existing active electrical systems are to be uninstalled from the vestibule, salvaged and reinstalled as needed to accomplish abatement work. Reference Description of work item C, & AA on sheet G-002.

QUESTION #2: (reference Description of Work item ‘AA’ on sheet G-002) What is the required size of the service (panel size) you are looking for?

CG RESPONSE: Revise Sheet A-101 Construction Key Note #11 to read “Remove panel board, provide new 100 amp replacement panel board with main circuit breaker…”

QUESTION #3: Within the vestibule there are fire alarm devices. Is the contract to replace these systems as that they appear to be out of commission, or just remove and discard?

CG RESPONSE: Remove, salvage and reinstall existing items.

QUESTION #4: Within the vestibule in one window there is an exhaust fan with a thermostat. This appears to be a non-working system. Are we to just remove and discard the power and conduit and leave the fan in the window?

CG RESPONSE: Replace existing vestibule ventilation system, including Exhaust Fan, outside air intake Motor Operated Damper (MOD), and associated thermostat and control components.

Refer to A3/A-101 PLAN AT VESTIBULE ENTRANCE, A2/A-201 WEST ELEVATION, A2/A-202 EAST

ELEVATION and A4/A-901 PHOTO VESTIBULE EXTERIOR. Reference photos P1, & P2 included on separate sheet with this amendment.

WRT the Exhaust Fan, remove existing dome type exhaust fan from existing infill construction of window frame opening in west wall of vestibule. Provide replacement dome type Exhaust Fan, TAG EF-1; connect to existing electric for removed fan.

WRT the Exhaust Fan, EF-1 specification is as follows:

Spun aluminum, sidewall mounted, direct drive, 2 speed or provided by the fan manufacturer with “Vari-Speed FSC Drive” adjustable speed drive for use to set fan performance; fan shall be manufactured at an ISO 9001 certified facility and be listed by UL to UL 705. Fan shall bear the AMCA Certified Seal for Sound and Air performance. Fan shall be bolted and welded construction utilizing corrosion resistant fasteners. The spun aluminum structural components shall be constructed of minimum 16 gauge marine alloy aluminum, bolted to a rigid aluminum support structure. The aluminum base shall have continuously welded curb cap corners for maximum leak protection. The discharge baffle shall have a rolled bead for added strength. An integral conduit chase shall be provided into the motor compartment to facilitate wiring connections. The motor shall be enclosed in a weather-tight compartment, separated from the exhaust airstream. Unit shall bear an engraved aluminum nameplate and shall be shipped in ISTA Certified Transit Tested Packaging. Fan wheel shall be centrifugal backward inclined, constructed of 100 percent aluminum, including a precision machined cast aluminum hub. An aerodynamic aluminum inlet cone shall be provided for maximum performance and efficiency. Wheel shall be balanced in accordance with AMCA Standard 204-96, Balance Quality and Vibration Levels for Fans. Motor shall be heavy duty type with permanently lubricated sealed bearings and furnished at the voltage and phase indicated.

Furnished by the manufacturer with hinged base kit, NEMA 1 Disconnect.

Performance 120 CFM @ 0.125 Total Static Pressure, 1/25 Motor HP, Max input 73 Watts, 110 v/1 phase/60

HZ, 1050 RPM

Basis of Design: Loren Cook ACE-D, Catalog Number 70C10DH

Remove existing Motor Operated Damper (MOD) from existing infill construction of window frame opening in east wall of vestibule, associated thermostat controlling removed exhaust fan and MOD; and associated cables, conduit and accessories. Provide replacement MOD, nominal size, 24” x 24” (verify in field prior to preparation of submittal), thermostat, relays, cables, conduit and accessories to achieve the Ventilation Sequence of Operation below. Mount thermostat on west wall at 5’ above finished floor, at location approved by COR.

Provide permanent label for EF-1 “EF-1 – Vestibule Ventilation System” and mount next to thermostat. Motor Operated Damper: Extruded aluminum frame, aluminum blades and aluminum hinge pins with nylon bushings.

Motors are shipped loose for field installation. Basis of Design: Loren Cook BDM-24 (size to suit opening in East wall opening where damper shall be provided.)

Ventilation Sequence of Operation: On a rise in space temperature sensed at thermostat of 80 degrees F (adjustable), energize EF-1 and open Normally Closed MOD. When space temperature falls below set-point, EF-1 shall be de-energized and MOD shall close.

Execution: Mount MOD and EF-1 securely at locations of removed equipment, seal weather tight with silicone-based caulk; secure in place with stainless steel fasteners. Provide a Functional Performance Test of system equipment scheduled two weeks in advance with and in the presence of COR.

QUESTION #5: Is the contractor permitted to anchor to the structure to support the scaffolding?

CG RESPONSE: The following is added to Specifications section 01 35 29, 3.3 Scaffolding:

The Contractor shall provide a submittal for review and approval prior to work beginning illustrating scaffolding erection drawings, including product data, tube sizes, anchoring methods, and all related scaffolding system components. Scaffolding shall be designed by a licensed professional structural engineer retained by the contractor. The engineer is responsible for the scaffolding components and all general and other safety issues of the scaffolding system. Submittal shall indicate the method of attachment to the ground of the scaffolding and the design loads at each point where the scaffolding is in contact with the structure. Submittal shall include supporting calculation with stamped shop drawings. The supporting calculation shall list the design load assumptions and demonstrate that the proposed scaffolding members are capable of supporting these loads. Local weather conditions and wind loading shall be included. Noting the age and condition of this irreplaceable historic lighthouse, the government reserves the right to require that the scaffolding system be completely ground supported.

However, connections to the tower being used for stand-offs for lateral stability may be acceptable. These connections shall have the lateral load distributed over an area of no less than 1 square foot, shall not be used as the primary support system, and be fully characterized in the submittal. If the surface of the lighthouse is disturbed for lateral loads (or any other purpose) the surface(s) shall be restored in accordance with specification section 04 21 80 Masonry Repair and Repointing.

QUESTION #6: (reference Description of Work item ‘Z’ on sheet G-002) Please confirm the ¼” Glass is just ¼” glass and not laminate or any kind of safety or hurricane resistant glass?

CG RESPONSE: Per specification section 08 81 80, 2.1: Glass is ASTM C 1172, clear laminated flat glass, ¼ inch thick.

QUESTION #7: The Verizon equipment within the vestibule that needs to be removed, A. What is this system feeding?

B. Is there a security system, if so, who is the provider?

C. Can these systems be off line while the work is being performed?

D. Will the government coordinate the removal and reinstallation of this equipment?

CG RESPONSE:

A. The system is feeding the phone line for the main station building. See response to question #1B above.

B. No.

C. No. See response to question #1B above.

D. No

QUESTION #8: On the West Elevation the existing grounding rod is not connected to anything, is the contractor to reconnect the west elevation grounding rod?

CG RESPONSE: Yes, the contractor is required to ground the service as required by NEC. Reference Sheet G- 002, Electrical General Notes #2&#3.

The following is added to Key Note #17 on Sheet A201: Existing lightening protection wires to remain. Temporary remove and reinstall to perform the work. Repair the west elevation grounding rod as need to properly reconnect the grounding rod.

QUESTION #9: Within the lighthouse there are lights going up the staircase that are in need of replacement see photo, Is the contractor to supply and install lite fixtures.

CG RESPONSE: Not in scope of work. Temporarily uninstall as needed to accomplish work, salvage, and reinstall.

QUESTION #10: In the ceiling of the vestibule there are 3 vapor tight fixtures, I was unable to see if these fixtures are in working order. Are we to just remove and reinstall? Or replace with new fixtures in kind.

CG RESPONSE: Remove, salvage and reinstall existing items.

QUESTION #11: Within the vestibule there are some abandoned outlets and from what I can see some that are in working order. How many devices are we to reinstall? (Switches and outlets)

CG RESPONSE: If general purpose outlet receptacles are in working order, remove salvage and reinstall. If outlets are not in working order, demolish.

QUESTION #12: (reference Summary of Work item ‘S’) Please confirm the contractor is only to reglaze the glass that needs replacement or is the government looking to reglaze all windows within the tower?

CG RESPONSE: Per the drawings, sheet A-202, key note #16: All Cast iron windows (5 total) installed at the tower are to be reglazed.