Amendment W912WJ25QA040-0003.pdf

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.

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 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 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 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.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

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

NUMBER IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation data, 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.)

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)

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

15C. DATE SIGNED 16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

16C. DATE SIGNED

Previous edition unusable STANDARD FORM 30 (REV. 11/2016) Prescribed by GSA FAR (48 CFR) 53.243

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE PAGE OF PAGES

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

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

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X) 9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED (SEE ITEM 13)

CODE FACILITY CODE

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

Section A - Solicitation/Contract Form

The following changes have been made:

INFORMATION FROM TO

Response Due Date 30 Jun 2025 03 Jul 2025

Miscellaneous text in this section has been modified to:

SITE VISIT ATTENDEE LIST:

NAME COMPANY

Bob Delamare Dome Construction William May Trident Waterproofing Cheryl Rachupka R&V Contracting Inc Richard Vena R&V Contracting Inc Henri Bunolo The Aulson Company Brian Ferreira Econ Electrical Jeffrey Perky Centimark Michael Cabral Centimark Neil Aexis Cornerstone

REQUEST FOR INFORMATION

Question 1: Who is the incumbent?

Response 1: This is a new requirement. As such, there is not an incumbent.

Question 2: What is the past contract award number?

Response 2: See response above.

Question 3: Has a budget been approved for this contract?

W912WJ25QA0400003

Response 3: The Government does not provide information on budget. The only information provided is the magnitude of construction, which is included in section I of the solicitation.

Question 4: Is there a scheduled site visit day, date and time?

Response 4: Information is provided in section L of the solicitation. Please reference provision 52.236- 27 Alt I.

Question 5: Do you have the pricing template in an Excel, pdf, or another form to submit in clean format?

Response 5: Pricing shall be completed on the solicitation document, SF18, in the included block on page 4 and submitted as such to the Government.

Question 6: Is perimeter netting required during demolition?

Response 6: The scope of work requires Contractors to contain debris during demolition. The exact means and methods of debris containment shall be selected by contractors. Perimeter netting may be used but is not specifically required.

Question 7: Can the Contractor temporarily park vehicles next to garage bay door during demolition and to deliver materials?

Response 7: Yes, the area next to the garage can be used temporarily each day. Area shall be cleared each night and as requested by government staff.

Question 8: After demolition down to the concrete deck, can the Government clarify if a concrete sealer and vapor barrier is required?

Response 8: Yes, please refer to revised Figure 5 and revised Statement of Work. Revised FIGURE 5 which has a note added to clarify the requirement for the concrete deck to receive a two-component, liquid-applied urethane coating to form a tough elastomeric water-resistant coating able to bridge cracks followed by application of a membrane vapor barrier.

Question 9: Are mechanical fasteners acceptable to install into the 5" concrete deck?

Response 9: Yes.

Question 10: Can the Government clarify the basis of design for the expected roof system layers?

Response 10: Basis of design for roof layers includes primer/sealer coat on bare concrete deck, membrane vapor barrier, tapered insulation mechanically fastened into the concrete deck, 1/2" cover board fully adhered to the insulation followed by PVC layer fully adhered to the cover board.

Question 11: The existing 24"x 32" Chimney on the lower roof appears to have some cracks in the blocks and may be vulnerable to water intrusion. Does the Government want to address the chimney in the contract?

Response 11: The Government will have the chimney blocks repointed outside of the contract prior to the Contractors mobilization. Please refer to revised Figure 5 and revised Statement of Work. Revised FIGURE 5 has a note added to require that the chimney be waterproofed and sealed with a two-component, liquid-applied urethane coating to form a tough elastomeric liner able to bridge cracks.

Coating shall extend from the base up to the existing cap, color shall be white.

Question 12: There are eight concrete raised curbs for equipment on the roofs could be vulnerable to water intrusion. Does the Government want to address the equipment curbs in the contract?

Response 12: Yes, please refer to revised Figure 5 and revised Statement of Work. Revised FIGURE 5 has a note added to require that all eight concrete curbs to be coated with a two-component, liquid-applied urethane high performance coating that cures in hours to form a tough, flexible elastomeric surface able to bridge cracks. Color shall be white.

Question 13: On the upper roof, there are numerous conduits, railings and the ladder that could potentially limit the thickness of the insulation layer. Will the Government accept less than the required R30 value of insulation on the upper roof if limited by existing equipment?

Response 13: Yes, as long as the minimum drainage slope of 1/8" per foot requirement is met.

Question 14: Are all the existing roof penetrations needed?

Response 14: There are two existing 4" diameter penetrations that are not needed in the future. Please refer to revised Figure 5 and revised Statement of Work. Revised Figure 5 has a note added to require that these two existing penetrations on the upper roof be filled. The Government will remove any existing cables in these penetrations prior to Contractor mobilization.

Section C - Description/Specifications/Statement of Work

Miscellaneous text in this section has been modified to:

PVC MEMBRANE ROOF REPLACMENT

NEW BEDFORD HURRICANE BARRIER

NEW BEDFORD, MA

STATEMENT OF WORK

REVISED

I. General

1. Scope - Contractor shall replace an existing Polyvinyl Chloride (PVC) roof system on a concrete building located in New Bedford, MA. Includes all labor, equipment, tools, services, and materials to demolish the existing roof and install a new fully adhered 60-mil thick PVC roofing system. The exterior dimensions of the building are approximately 59 feet by 25 feet. The building has two distinct levels, both the lower and upper roofs shall be replaced. Demolition work includes removal of the entire roof system including the insulation, PVC material, walk pads, wood blocking, flashing, metal facia, down to the underlying concrete roof deck. Concrete deck shall receive a liquid applied urethane coating to form a tough elastomeric water-resistant coating able to bridge cracks followed by application of a membrane

The new PVC roof shall be designed with tapered rigid insulation. The new PVC roof vapor barrier.

system shall be watertight and properly pitched to shed water from the roof. Existing lightning protection systems, railings, cameras, lights, conduits, chimneys, antennas and other equipment mounted on the roof shall be protected and moved as required to install the new roof. The new 60-milPVC roof system shall be designed for high wind coastal conditions and be warranted by the manufacturer for 30 years.

Contractor is responsible for removal and proper disposal or recycling of all debris generated. All work shall be completed in accordance with the following Statement of Work.

2. Location - The concrete building to receive a new roof is located at the end of a flood control dike that extends across New Bedford Harbor. A paved access road from the end of Gifford Street, New Bedford, MA leads to the Operators Building. The building is surrounded by water with very limited access from the ground level. The Contractor is responsible for all means and methods for access to and from the roof location. Work on the roof shall not encroach on the adjacent navigation channel or impact vessels in the channel. Figures 1 and 2 show the location.

3. Existing Conditions - The existing PVC roofing system was installed in 2010, the roof was constructed with a fully adhered membrane over top of rigid, tapered insulation installed over the concrete deck of the building. A winter storm in 2020 damaged a section of roof flashing and uplifted the lower roof membrane resulting in failure of the adhesive between the roof membrane and underlying insulation. The roof was patched with temporary PVC materials to prevent water intrusion. There are numerous roof-mounted items and cable penetrations on the roof including railings, electrical conduits, grounding cables, radar pedestals, cameras, chimneys, antenna bases, vent equipment pads, and exhaust pipes.

4. Site Visit - Scheduled site visits will be provided for all interested vendors, with a date and time to be listed in the solicitation. Interested vendors are highly encouraged to attend the site visit to confirm understanding of the scope, inspect field conditions, and assess access to the roof, and prior to providing a quote. No extra payment will be allowed for perceived additional work caused by unfamiliarity with site conditions and requirements. After Notice to Proceed (NTP), contact the Technical Point of Contact (TPOC) with questions and coordination, Andrew Cattano 978-318-8329 or Andrew.M.Cattano@usace.

army.mil

5. Schedule - The Contractor shall commence work within 21 days after Notice to Proceed, prosecute work diligently, and complete all work no later than 130 days after Notice to Proceed. The project area will be open to the Contractor Monday through Friday, 7:00 AM to 5:00 PM. All work must be done during these hours unless additional hours are approved by the TPOC. No work shall be done on weekends or Government holidays.

All Pre-Construction submittals shall be submitted, reviewed, and accepted within 21 days of Notice to Proceed. The Government reserves up to 21 days for review and acceptance on each submittal/ resubmittal from the date of receipt. If revisions are necessary to the submittals, the Contractor shall make such revisions and shall be resubmitted to the Government in an acceptable form within 14 days of the Government's response, unless additional time is granted by the Government in writing. No field work may proceed prior to the acceptance of Pre-Construction submittals.

6. Safety Requirements

a. General:

All work shall be conducted in accordance with the U.S. Army Corps of Engineers (USACE) Safety and

Occupational Health Requirements (EM 385-1-1, most recent edition), and all applicable Occupational Safety and Health Administration (OSHA), federal, state, and local safety and health requirements. A copy of EM 385-1-1 can be accessed electronically at the following link:

https://www.publications.usace.army.mil/Portals/76/EM%20385-1-1%20_EFFECTIVE% 2015March2024.pdf

Project staff reserve the right to cease work at any time should the safety of employees, Contractors, and /or the public become jeopardized.

b. Accident Prevention Plan (APP):

The Contractor shall prepare a site-specific Accident Prevention Plan. The APP must be written by a Competent Person (CP) and document the specific work processes, equipment, materials to be used, hazards and applicable control measures.

The mandatory ENG Form 6293 (Accident Prevention Plan Worksheet) must be submitted and accepted prior to beginning on site work:

https://www.publications.usace.army.mil/Portals/76/Eng_Form_6293_Aug%202024%20-%20FINAL.pdf

A preparatory meeting shall be conducted by the Prime Contractor to discuss the APP contents with all effected onsite employees. The Prime Contractor is responsible for informing the subcontractors of the safety provisions under the terms of the contract, the penalties for noncompliance, and inspecting subcontractor operations to ensure that accident prevention responsibilities are being carried out.

Daily safety meetings shall be held and documented. Records shall be available to the TPOC upon request.

c. Activity Hazard Analysis (AHA):

An AHA shall be submitted and accepted for each definable feature of work (DFOW) in accordance with EM 385-1-1, Chapter 2-6. A DFOW is defined as any task, which is separate and distinct from other tasks, has separate control requirements, or is identified as different trades or disciplines. The AHA shall be continuously reviewed and revised to address changing site conditions as appropriate.

For a non-mandatory formatted outline of an AHA, see ENG Form 6206 (Activity Hazard Analysis) https://www.publications.usace.army.mil/Portals/76/Eng_Form_6206_Sep%202024%20-%20FINAL.pdf

d. Site Safety and Health Officer (SSHO) Requirements:

The Contractor shall employ a minimum of one person to function as a Level 3, SSHO. A Level 3 SSHO is a designated Qualified Person (QP) or Competent Person (CP) with Safety and Occupational Health (SOH) responsibility that meets the requirements of EM 385-1-1, Chapter 2-3.b and 2-4.b.

Level 3 SSHOs must have training, knowledge, and/or experience identifying hazards and implementing controls for the work being performed.

The SSHO shall be present at the project site and be responsible for overseeing the implementation of the Prime Contractor's SOH program. Contractor shall designate all SSHOs on a mandatory ENG Form 6282 (Site Safety and Health Officer Designation Letter):

https://www.publications.usace.army.mil/Portals/76/Eng_Form_6282_Site%20Safety%20&%20Health% 20Officer%20(SSHO)%20Designation%20Letter_2024%20Aug%20-%20FINAL.pdf

e. First-Aid and CPR Personnel Requirements:

For shifts with multiple employees, provide at least two employees that are certified to administer First Aid and CPR. When employees work alone, they must be certified in First Aid and be provided an effective means of communication to call for assistance in the event of an emergency. Minimum First Aid and CPR qualifications are outlined in EM 385-1-1, Chapter 3-3.

f. Additional Personnel Requirements:

Other Competent Person (CP) or Qualified Persons (QP) may be required per EM 385-1-1 and/or other sections of this Scope of Work, based on the definable features of work for this project.

g. Accident Reporting:

All accidents and near misses shall be investigated by the Contractor and reported to the Technical Point of Contact in accordance with EM 385-1-1, Table 2-1.

The mandatory ENG Form 3394 shall be completed and submitted to the TPOC within seven (7) days of an incident: https://www.publications.usace.army.mil/Portals/76/Publications/EngineerForms /Eng_Form_3394_2021Aug.pdf

7. Fall Protection

a. General: The requirements of this section are applicable to Contractors when their employees are working at heights above 6 feet, exposed to fall hazards, and/or using fall protection equipment. Every Contractor is responsible for establishing, implementing, and managing a fall protection program in accordance with EM 385-1-1, Chapter 21.

b. Submittals: A site-specific Fall Protection and Prevention Plan is required to be submitted and approved by the Technical Point of Contact (TPOC) prior to any work being completed at heights.

USACE will provide a non-mandatory, fillable template plan. However, the Contractor is permitted to submit their own plan, at a minimum it must address the items listed in EM 385-1-1, Chapter 21-7:

i. General

1) Description of the activity being performed;

2) Description of anticipated hazards and fall hazard prevention and control;

3) Assignment of personnel and their duties and responsibilities;

4) Inspection and oversight methods to insure adherence to the plan;

5) Describe maintenance and storage of fall protection equipment;

ii. Rescue Plan

1) Methods for rescue;

2) Identify, select, and document anchorages for rescue;

3) Rescue equipment;

4) Identify safety spotters;

c. Competent Person (CP): The person designated in writing by the employer to be responsible for immediate supervising, implementing, and monitoring of the fall protection program, who through training, knowledge and experience in fall protection and rescue systems and equipment, is capable of identifying, evaluating, and addressing existing and potential fall hazards and, who has the authority to take prompt corrective measures with regard to such hazards. The CP shall:

i. Be onsite at all times while work at height is being performed;

ii. Be trained in accordance with EM 385-1-1, Section 21-3. c, to include a minimum of 24-hour CP in fall protection training made up of classroom and practical hands-on components.

iii. Prepare, update, review and approve fall protection and prevention plans;

iv. Review procedures as workplace activities change to determine if additional practices, procedures or training need to be implemented;

v. Supervise the selection, installation, use and inspection of non-certified anchorages;

vi. Verify End Users who work at heights are trained and authorized to do so;

vii. Inspect fall protection equipment at the frequency required by the manufacturer and EM 385-1-1.

d. Qualified Person (QP): A person with a recognized degree, or professional certificate, with extensive knowledge, training and experience in the fall protection and rescue field who is capable of designing, analyzing, evaluating and specifying fall protection and rescue systems. The QP shall:

i. Be trained to the applicable level, as described in EM 385-1-1, Chapter 21-3. b;

ii. Provide technical support for the fall protection program;

iii. Have advanced understanding and knowledge of the requirements, equipment, systems, physical sciences, and engineering principles that affect fall protection and rescue systems;

iv. Supervise the design, selection, installation and inspection of certified anchorages and horizontal lifelines;

v. Be qualified to select proper fall protection and rescue equipment;

e. End User: A person who has been trained and authorized by the employer on the use of assigned fall protection equipment in a typical fall hazard situation. They must have an understanding of workplace activities and follow the policy, procedures, and instructions of the Competent Person regarding the use of fall protection, rescue systems, and related equipment. They shall:

i. Be trained by a CP in accordance with EM 385-1-1, Chapter 21-3. d, to include hands-on training and practical demonstrations;

ii. Bring all unsafe or hazardous conditions or actions that may cause injury to them or others, to the attention of the CP;

iii. Properly use, inspect, maintain, store and care for their fall protection equipment and systems;

iv. Inspect all fall protection equipment or damage or defects, prior to each use.

v. Understand the nature of fall hazards in the work area and how to properly mitigate them;

vi. Calculate free fall distances and clearance requirements of fall protection systems;

vii. Understand the site-specific rescue procedures;

f. Personal Fall Arrest System Requirements (PFAS): All PFAS shall meet the requirements contained in ANSI Z359, Fall Protection Code, to include fall restrain and positioning systems. A PFAS consist of a full body harness, connecting means, and an anchorage system. A CP shall inspect the equipment at least once semi-annually and whenever the equipment is subject to a fall or impact.

i. Full body harnesses shall meet the requirements of ANSI Z359 and be used in accordance with EM 385-1-1, Section 21-8. c. All full body harnesses shall be equipped with Suspension Trauma Preventers such as stirrups, relief steps, or similar in order to provide short-term relief from the effects of orthostatic intolerance.

ii. All energy absorbing lanyards shall meet the requirements of ANSI Z359.13 and be used in accordance with EM 385-1-1, Chapter 21-8. c. (4).

Self-Retracting Devices (SRDs) shall meet the requirements of the ANSI/ASSE Z359.14 standard and be used in accordance with EM 385-1-1, Chapter 21-8. c. (5)

All scaffolding, aerial work platforms, scissor lifts, or similar must be used in accordance with EM 385-1- 1, Chapter 22.

8. Preconstruction Conference - Prior to the start of any work, the TPOC will schedule and conduct a "Pre-Construction Conference". The Contractor's Project Manager and Quality Control Personnel will be physically present to attend this meeting. No work may be performed under this contract prior to this conference. The purpose of the conference is to enable the TPOC to outline the procedures that will be followed by the Government in its administration of the contract, and to discuss the performance that is expected from the Contractor in terms of safety, quality, submittals, communications, access to the site, inspections, and payments. This conference will allow the Contractor an opportunity to ask questions about the Government's administration and inspection of contract work. At the Pre-Construction conference the Contractor shall provide the name of the project superintendent with a telephone number for project coordination.

9. Permits - There are no permits required to complete this work. The Contractor shall comply with any applicable Federal, State, county, and municipal laws, codes, and regulations in connection with the performance of the work specified under this contract.

10. Security - The Contractor will comply with all established security policies at the New Bedford Hurricane Barrier. Due to periods of heightened security that may affect the access to the areas covered under this contract, the Government reserves the right to close any property or portion of property and reschedule work. The Contractor shall be given at least 24-hour notice of any such closure.

11. Payment - After final inspection and acceptance by the Government, the Contractor must submit an invoice to the TPOC. The invoice shall include the invoice date, contract number, dates of work, description of work, quantities, process, and total amount due per line item. The invoice must also include the company letterhead, and this must match the data that is registered in the System for Award Management (SAM) registry. For jobs greater than 30 days, the Contractor may request progress payment.

All invoices shall be coordinated with Andrew.M.Cattano@usace.army.mil Mailing address:

US Army Corps of Engineers Cape Cod Canal Field Office PO Box 1555 Buzzards Bay, MA 02532 Attn: Andrew Cattano

12. Warranty - Contractor shall provide a full system roof warranty covering all PVC membrane roof components as well as workmanship warranties meeting the following requirements. Provide a manufacturer's warranty for the materials that covers full system watertightness for a minimum duration of 30 years. The roof system installer must warrant for a period of one year that the roof system is free from defects in workmanship. This warranty shall be in writing with U.S. Army Corps of Engineers listed as the owner. The roof system installer is responsible for correction of defective workmanship and replacement of damaged or affected materials for 1 year past the Government's acceptance of the work.

The roof system installer is responsible for all costs associated with the repair or replacement work.

II. Technical Requirements:

Part 1 General:

1. Requests for Information:

After Notice to Proceed, questions and requests for information should be directed to the TPOC Andrew Cattano at 978-318-8329 or Andrew.M.Cattano@usace.army.mil .

2. Submittals - Although the Government reviews submissions required by this Statement of Work, it is emphasized that the Contractor's work must be completed using proper internal controls and review procedures. The Government reserves up to twenty-one (21) days for review and acceptance on each submittal/resubmittal from the date of receipt. If revisions are necessary to the submittals, the Contractor shall make such revisions and shall resubmit to the Government in acceptable form within fourteen (14) days of the Government's response, unless additional time is granted by the Government in writing.

The submittals identified below must be prepared and submitted to the TPOC for review and accepted by the Government.

a. Pre-construction: Submitted within 21 days of NTP. Submittals must be accepted prior to the commencement of any field work.

Accident Prevention Plan (ENG Form 6293) Activity Hazard Analysis Site Safety and Health Officer Designation Letter Fall Protection and Prevention Plan Proposed Schedule for completing the work.

Work Plan - Plan that describes the proposed means and methods of access to the roof, debris removal, hoisting of materials, installation of PVC roof system.

CPR and First aid Certification Proposed new PVC roof system. Information and data from the membrane manufacturer on all the proposed materials and configuration of the roof system. This submittal shall provide a detailed description of the proposed materials to include PVC membrane, adhesives, insulation, cover board, two-

, perimeter nailers, flashing, fascia, edge materials, flashing for component liquid urethane, vapor barrier railing posts, cable penetration details, walk mats, and fasteners details. Submittal should describe how the new insulation will be fastened, how the new PVC membrane will be , attached to the cover board flashing and edge details. This submittal on roof materials shall provide a design compliant with the membrane manufacturer's products and materials.

b. Other Submittals As-built Drawing - accurate as-built of the new roof system.

Warranty Information

3. Clean Up and Waste Disposal - The Contractor shall practice good housekeeping to maintain a safe job site. The Contractor shall keep the work area, including any storage areas, free from the accumulation of waste materials. Upon completing work, the Contractor shall remove all tools, equipment, and materials that are not the property of the Government and shall clean up the job site to the satisfaction of the Government. Debris, rubbish, and all waste materials resulting from the work under this contract shall be disposed of by the Contractor at his expense off Government property. Segregate and maximize recycling of all waste generated.

4. Environmental Protection - Containers for waste materials and debris shall be provided by the Contractor at the site. Contractors means and methods shall prevent any release of debris or any contaminants onto land or the adjacent waterway. Contractor staff shall utilize strict collection of demolition debris and removal from the site. All containers and staging areas shall be inspected / cleaned on a daily basis. Water, air and land resources shall not be adversely impacted during the course of the work. Contractor will take necessary steps to ensure all federal, state, and local environmental regulatory requirements are met. Contractor shall immediately notify the TPOC of any spill or any release of contaminants to land or the water.

5. Sustainability - EPA Designated: Under the Comprehensive Procurement Guidelines (CPG) program, the Environmental Protection Agency (EPA) designates products that are or can be made with recovered materials, and recommends practices for buying these products. Any designated product that is being offered or supplied under this contract shall meet the minimum recommended content levels as identified under the CPG program. Visit https://www.epa.gov/smm/comprehensive-procurement-guideline-cpg-program for a complete list of designated products and the associated recommended contents levels.

Offerors must be able to demonstrate that each offered products meets minimum content levels upon request.

6. Government Resources - The Government will make available 120-volt electric power from existing outlet locations at the facility. The Contractor shall conserve the use of any electricity provided. The Government will turn off electrical power to radars and other equipment mounted on the roof for short durations when workers need to work in close proximity to the equipment. No other resources are provided by the Government.

7. Damage to Government and Private Property - The Contractor shall be responsible for restoring all Government facilities or equipment damaged as a result of contract work. The Contractor shall also be responsible for any damage to private property or injury to any person as a result of contract work.

8. Omissions - Although work is not specifically shown or specified, the contract shall include miscellaneous items, appurtenances, and materials obviously necessary for a sound, secure and complete roof installation. In case of omission, the normal industry, state, or federal standards, practices, specifications, and/or guides shall prevail.

9. Quality Assurance - The Contractor is responsible for quality control of the work. The Government has the right to inspect and test all items called for by the contract, to the extent practicable at all times during the term of the contract.

10. Potential Flood Control Operations - In the event that weather conditions may require the hurricane barrier to operate for flood control operations, the Contractor shall cease all work onsite. Government will provide 24 hours advance notice for such events. The Contractor shall fully cooperate with other contractors and Government employees to not impede any operations work.

11. Receiving and Storing Materials - The Government will provide an exterior storage area and parking for Contractor personnel. The Contractor is responsible for receiving and unloading of delivered goods.

The Contractor is responsible for protecting any stored materials, equipment and tools during sitework.

Part 2 Products:

The contractor shall provide a new 60-mil PVC roof system including a fully adhered PVC membrane, insulation, , fasteners, new pressure treated nailers along entire perimeter, flashing, 1/2" cover board fascia, drip edge, sealants, The new two-component liquid urethane sealer, and membrane vapor barrier.

roof system shall be designed and approved for use in a high wind marine environment. Uplift resistance and perimeter fascia shall be designed to eliminate possible air penetration in up to 120 mph winds.

Surface of new roof shall have minimum drainage slope of 1/8" per foot. Roof shall be all include a 30-year manufacturer warranty. The contractors roof submittal shall provide a design compliant with the membrane manufacturer's products and materials. All products shall be new and unused consistent with the submitted design. The following product requirements are standard solutions. The Contractor shall verify and update all pertinent elements depending on membrane manufacturer selected.

1. Water Cutoff Mastic / Water Block

a. As supplied by the roof membrane manufacturer and recommended for 30-year warranty applications.

2. Membrane Flashing

a. Membrane flashing, including self-adhering membrane flashing, perimeter flashing, flashing around roof penetrations and prefabricated pipe seals, shall be minimum polymer thickness as recommended by the roof membrane manufacturer or minimum 0.060-inch-thick reinforced PVC.

3. Membrane Fasteners and Plates

a. Coated, corrosion-resistant fasteners as recommended and supplied by the PVC roof membrane manufacturer.

4. Stress Plates, Bar or Rail for Fasteners

a. Corrosion-resistant stress plates as recommended by the roof membrane manufacturer. Stress plates shall be formed to prevent dishing or cupping. Manufacturer-supplied anchoring bar or rails shall be utilized.

5. Auxiliary Fasteners

a. Corrosion resistant screws, nails, or anchors must be suitable for intended attachment purpose and be recommended and supplied for use by the PVC roof membrane manufacturer.

6. Roof Insulation and Edge Details

a. Insulation system and facer material shall be compatible with 30-year warranty roof applications and be approved and supplied by the PVC membrane manufacturer. Provide preformed polyisocyanurate boards conforming to ASTM C 1289, Type II, Grade 2 or 3, with felt or glass-fiber mat facer on both major surfaces. The insulation shall provide a minimum R-value of 30 (F-ft-h/BTU) and be installed in layers to provide pitch for the roof.

7. Wood Products

a. Provide pressure treated wood for nailers and blocking as necessary to complete the roof assembly.

8. Reinforced, PVC Membrane

a. Reinforced polyvinyl chloride (PVC) membrane shall contain fibers or scrim, and shall comply with ASTM D 4434, Type III, or ASTM D 6754, and in all cases shall provide 0.060-inch minimum thickness.

Principal polymer used in manufacture of the membrane sheet shall be PVC. Installed to minimize seams in the membrane and 3-way overlaps, prefabricated sheets shall not be accepted.

b. Watertight seams

c. Fully adhered.

d. Top color of membrane - White.

9. PVC Protection Mats

a. Scrim reinforced 0.096-inch thickness PVC membrane with a textured surface, compatible with and supplied by manufacturer of the PVC membrane.

10. Seam Tape:

a. Utilize seam tape as recommended by the manufacturer.

11. Lap Cleaner, Lap Sealant, and Edge Treatment that is appropriate for 30-year warranty roof applications. The edge treatment details shall be designed for watertightness and resistance to uplift and air penetration in up to 120 mph winds. Materials as recommended by the membrane manufacturer.

12. Cover Board:

a. 1/2 inch thickness gypsum Fiber board.

c. Fully waterproof bonding suitable for exterior applications that are subject to permanent exposure to the weather or moisture.

13. Concrete waterproofing for concrete deck, chimney and equipment pads:

a. High performance two-component, liquid applied urethane that remains flexible and resilient.

Elastomeric water-resistant coating able to bridge cracks.

14. Vapor Barrier

a. Low water vapor permeance, high strength, and puncture resistant as recommended and supplied by the PVC roof membrane manufacturer.

Part 3 Execution:

General

1. All onsite work shall be coordinated with the TPOC to minimize any impact on the operations of the New Bedford Hurricane Barrier. Contractor to verify existing conditions and that all required submittals are approved prior to commencing any demolition work. The Contractor shall keep on site the means to quickly cover and protect all areas open to the elements during any rain/weather events. Means and methods for access to the roof, and demolition shall be with care to ensure no impact to equipment and no spillage into the water.

Roof Demolition

1. The Contractor shall take necessary precautions to avoid damage to existing roofing items to remain in place, such as flood lights, vents, electrical equipment, cameras, radars, railings. Any damaged items shall be repaired or replaced as approved by the TPOC at no additional cost to the Government.

2. Demolish and remove the entire existing roof system including the PVC membrane, insulation, mechanical fasteners, pressure treated nailers, flashing, sealants, patch materials, and blocking down to the underlying concrete roof slab. Cut flush or remove any objects, such as old mechanical fasteners, that may puncture the new roofing system. Ensure surfaces are rigid, dry, smooth, free from cracks, holes and sharp edges prior to application of the new roof system. Existing railings shall remain in place and be protected during demolition work. Notify the TPOC immediately if any discrepancies are discovered that will affect demolition or new work. During all phases of work, the means and methods shall prevent any construction debris from falling into the ocean or impacting any equipment at the site. Collect and legally dispose of all debris generated in accordance with all federal, state and local laws and regulations off of Government property.

3. Preserve all concrete bases and pedestals, existing roof penetrations, railings, and all equipment attached to them. The Government will turn off electrical power to radars and other equipment mounted on the roof for short durations when workers need to work in close proximity to the equipment. The Contractor shall carefully move the components of the existing lightning protection system, conduits, and equipment as needed for demolition and installation of the new roofing system. Components damaged by the Contractor during removal, storage, or reinstallation shall be replaced by the Contractor at no additional cost to the Government.

4. Remove existing perimeter flashing and fascia materials to below the concrete roof slab.

5. All metal vent pipes that are exposed during demolition shall be cleaned and painted. Clean and paint with 2 coats of spray paint that provides anti-corrosion protection.

Roof Installation

1. All components of new roof shall be from same roof system manufacturer and be compatible with all other components being used. All details and methods of installation to be in accordance with manufacturer's installation requirements to warrant full compliance with manufacturer warranty.

2. Inspect concrete roof deck. Any voids, holes and other surface imperfections that will impact the new roof system shall be filled or made level. The TPOC shall confirm the work and inspect and accept the final surface. Surface should be clean and even. Bare concrete deck shall receive a liquid applied urethane coating to form a tough elastomeric water-resistant coating on the deck. After the urethane coating is cured, a membrane vapor barrier shall be installed in accordance with manufacturer's recommendations.

To the existing chimney, Contractor shall apply a two-component, liquid-applied urethane coating to form a tough elastomeric water-resistant coating able to bridge cracks. This coating shall extend from the base of the chimney up and cover the existing cap, color shall be white.

To the eight existing concrete raised curbs for equipment on the roofs (seven on upper roof and one on lower roof), Contractor shall apply a two-component, liquid-applied urethane coating to form a tough elastomeric water-resistant coating able to bridge cracks. The color shall be white.

There are two existing 4" diameter penetrations on the upper roof that are not needed. The Government will remove any existing cables from these penetrations prior to Contractor mobilization. Contractor shall fill the two abandoned penetration holes with grout. Grout shall be minimum 3,000 psi compressive strength.

3. Furnish and install new pressure treated wood blocking at entire perimeter of roof. Blocking shall be installed to develop slope listed above on the surface of the new membrane roof to drain to the appropriate roof edge. New perimeter fascia to accommodate the rise in level of final surface.

4. Install new tapered insulation to provide a slope on the finished roof surface to drain water from the roof. . Insulation boards shall be installed Insulation shall be mechanically fastened to the concrete deck smoothly and evenly, without cracks and no gaps in joints exceeding 1/4-inch width. A 1/2" thick cover board shall be installed over the tapered insulation. Cover board shall be fully adhered to the tapered

. Completed roof slope should be no less than 1/8" per insulation. Cover board joints shall be staggered foot, no more than 1/4" per foot.

5. PVC membrane shall be overlapped a minimum of 5.5-7 inches and minimum 4 inches at ends.

Membrane joints shall be free of wrinkles and fishmouths. The entire length of hot-air-welded seams shall be probe-tested and corrected during the day of installation. Defective areas shall be re-welded.

Wrinkles, fishmouths, or damaged areas shall be cut out and the area covered with a membrane using a continuous hot-air-welded seam on all sides. Hot-air-welded seams are to be accomplished in accordance with the PVC membrane roofing manufacturer's published requirements. Ensure membrane is free of wrinkles and ridges. Check all seams and ensure full/continuous lap seal. Adhesive bond or mechanically secure roof membrane sheet at roof perimeter in a manner to comply with wind resistance requirements and in accordance with membrane manufacturer's printed application instructions. When adhesively bonding a mechanically fastened system in perimeter areas, the perimeter boundary of the adhesive bond shall be the same as the boundary required for additional perimeter mechanical fastening to meet wind resistance requirements and in accordance with membranes manufacturer's printed instructions.

6. Membrane shall be fastened to nailers in accordance with the membrane manufacturer's instructions.

Unless otherwise specified, nails shall be staggered on 4-inch centers maximum; screws for sheet metal shall be staggered on 8-inch centers maximum; and a row of fasteners shall be at least 1/2 inch from edges of sheet metal.

7. Contractor shall mechanically fasten the roof membrane at penetrations, at base of antenna and walls, and at all locations where the membrane turns. Space fasteners a maximum of 12 inches on center, except where more frequent attachment is required to meet specified wind resistance or where recommended by the roof membrane manufacturer. Hot-air-weld all seams of flashing material as recommended by the roof membrane manufacturer's printed data.

8. Roof edges, projections through the roof and changes in roof planes shall be flashed. The seam shall be sealed a minimum of 3 inches beyond the fasteners which attach the membrane to nailers. The installed flashings shall be secured at the top of the flashing a maximum of 12 inches on centers under the counterflashing or cap. Where possible, prefabricated components shall be used for pipe seals and flashing accessories. Apply flashing to cleaned surfaces and as recommended by the roof membrane manufacturer. Utilize reinforced PVC membrane flashing and prefabricated accessory flashings as recommended by the roof membrane manufacturer.

9. Sheet metal counter-flashing shall be installed over the termination bar in the completed work.

Mechanically fasten top edge of base flashing for all other terminations in a manner recommended by the roof membrane manufacturer. Apply reinforced PVC flashing membrane over top of exposed nailers and blocking and to overlap top edge of base flashing installation where applicable.

10. Contractor shall protect applied membrane roofing system from water intrusion at the end of each day's work and when precipitation is imminent.

11. Install protection mats for walking paths in the same locations as existing roof. Mats shall be fastened in accordance with the PVC membrane roof manufacturer's printed instructions.

Closeout Procedures

1. Contractor shall coordinate with the TPOC for a final inspection walkthrough of the project to ensure the work is completed in accordance with this Statement of Work. Contractor shall leave the entire site of the work in a neat and orderly condition.

2. Contractor shall ensure that a complete "As Built" drawing was submitted to the TPOC and is accepted as accurately depicting the as-built configuration of the installation. Contractor shall ensure that a written warranty document was submitted to the TPOC and is accepted. Contractor shall complete Final Payment Forms and Certifications and submit to the TPOC for review and processing.

KO CONTRACTING DIVISION, 696 VIRGINIA ROAD

CONCORD, MA 01742-2751

UNITED STATES

JENNIFER SAMELA, EMAIL: JENNIFER.M.SAMELA@USACE.ARMY.MIL TELEPHONE: 978-318-8324

AdminBy:

SCD: PAS:

CLOSING IS EXTENDED UNTIL JULY 3, 2025 AT 5:00 PM EASTERN.

ALL OTHER TERMS AND CONDITIONS REMAIN UNCHANGED.