SOW_PJMS 232091 Repair Roof B1120_v2.pdf

REPAIR LOWER ROOF BLDG 1120

STATEMENT OF WORK

PROJECT NUMBER: PJMS232091

MARYLAND AIR NATIONAL GUARD

MARTIN STATE AIRPORT

NATIONAL GUARD BASE

BALTIMORE, MARYLAND 21220

6 March 2024

1 General Project Information:

1.1 Project Location and Background: This project is located at the Martin State Airport

Maryland Air National Guard, Baltimore, MD 21220, Building 1120 Logistics Readiness Squadron (LRS), 1121/1122 respectively. LRS is responsible for logistic operations of the 175 Wing. The low roof of LRS consist of two types of roofs: metal seam and modified bitumen roof. Booth roofs leak where the roofs meet the brick wall. This project entails overlaying the modified bitumen roofing system with a Thermoplastic Polyolefin (TPO) roofing system and retrofitting the metal seam roof into a TPO roof. This project requires selective demolition and replacement of roof deck panels as needed, removal/replacement of vents, flashing, coping, and gutters, installation of new 2-inch insulation, cover board and single membrane Thermoplastic Polyolefin (TPO) roofing system. TPO roofing system to include all accessories to seal all vents, electrical and HVAC piping, roof top air handling units and roof top structures, penetrations, etc. Replace all coping/parapet caps, wall metal flashings and through-wall scuppers and downspout assemblies.

1.1.1 The contractor is responsible for providing specifications and field verify all site conditions, dimension and other factors which may affect the work. Contractor will provide all tools, materials, equipment, labor, and items as needed to properly complete the work in accordance with this statement of work and the manufacturer’s instructions for TPO roofing systems. The area to be covered is approximately 3,000 sq. ft. Contractor shall coordinate demolition and installation with the contracting officer representative and building manager.

1.2 Site Description: This facility always requires security protection. Absolutely no photography of aircraft is permitted. The work area is shown in the Site Plan submitted. See attached base map.

1.3 Use of Premises: The Contractor shall assume full responsibility for protection and security of materials and equipment stored on site.

1.3.1 Contractor shall move any stored products, under their control, which interfere with operations of the Government.

1.3.2 The contracting officer representative (COR) will determine the equipment, material and other staging locations or work areas available under this contract.

1.4 Government Equipment: Contractor use of Government owned or leased equipment such as: hoists, forklifts, compressors, welding machines, cutting rigs, etc. shall not be permitted on either a reimbursable or non-reimbursable basis. Cost for all equipment required to accomplish the work shall be included in the Contractor’s final bid price.

1.5 Permits and Inspections: No permits or inspections by local building officials are required.

All inspections will be performed by COR and roof manufacturer representative unless modified by the Statement of Work. All testing will be performed by the contractor unless modified within the construction documents.

1.5.1 Digging Permit: This permit is obtained from the Work Control Office (Facility 2100) at

(410) 918-6300. The Contractor is responsible for contacting ‘Miss Utility’ to mark the gas and electrical lines. The Contractor is responsible for hiring a private underground utility locating company to mark the water, sanitary sewer, storm sewer, broadband cable, and communication lines.

1.5.2 Burn Permit: Unless otherwise specified in other sections of this specification, the use of burning equipment or open flame welding and cutting shall be allowed only as authorized in writing by the local Fire Inspector (Facility 3150). Once approved by the Fire Inspector, a written AF Form 592 – USAF Welding, Cutting, and Brazing Permit will be issued. The permit will be issued by the fire department within one (1) hour of request and must be renewed daily.

1.6 Hours of Operations: The hours of operations at Martin State Airport for the Air National Guard are 10 hours per day (0630 – 1700) Tuesday – Friday. Coordinate access to premises with COR, for execution of work. Emergency situations, military operations, or other contingencies may cause suspension of work or restrictions on access to the construction site.

1.7 Off-Hours Work: Except as otherwise specified, all work shall be performed during regular work hours (indicated above). If the Contractor desires or is required to work on Mondays, Saturdays, Sundays, Holidays or other hours outside normal work schedule, the Contractor shall be required to seek written approval from the Contracting Officer. The Contractor is not entitled to premium time if the request is approved.

1.8 Change Orders: Only the COR or the Contractor may initiate change order requests. Do not proceed with any work until a signed modification or other written authority is received from the Contracting Officer. Only the Contracting Officer may approve a change order.

1.9 Field Changes: No changes in the cost or the scope of the project may be made without processing a change order. Field changes not involving cost or scope may be initiated by the Base Civil Engineer (BCE), COR, Contracting Officer, or the Contractor.

1.10 Daily Report and Sign-In Register: Each day the Contractor is on site to perform any work, the Superintendent/Foreman shall sign in at the Base Engineering Building (Facility 2100), indicating specific Facility/Location and the number of persons who shall be performing work that day.

1.11 Clean up: The work site is an active civilian and military airport. Site cleanliness and Foreign Object Debris (FOD) control is essential. The Contractor will clean up all construction debris and refuse and will remove it from the work site and the Base daily at their own expense.

1.12 Safety: The Contractor is responsible for performing all work In Accordance With (IAW) State and Federal OSHA requirements as well as compliance with the most current USACE EM 385- 1-1.

1.13 Environmental Protection and Waste Disposal: The disposal of all materials, which may include hazardous or toxic liquids that are used to perform the work, shall conform to all Federal, State, and Local environmental regulations. All dumpster service and waste management shall be provided at no additional cost to the Government. All recyclable metal shall be placed into Martin State Airport scrap metal recycling containers. Please contact the Base Environmental Scientist Greg Elmore at (410) 918-6486 for detailed information.

For more information, review “Environmental Protection Plan for Contractors”, which will be provided during the solicitation phase.

1.14 Hazardous Materials: If suspected hazardous materials are discovered, do not disturb, contact the COR.

1.15 Drawings: Drawings furnished by the government to the Contractor may be used for general information only and shall not be relied upon or used as the basis for preparation of contract drawings required by this contract without complete on-site verification by the Contractor.

1.16 Drawings are to be approved by the Base Civil Engineer and COR.

1.17 Description of Work: The Contractor shall describe in his or her proposal how they will manage the project. The Contractor shall identify key staff and their abilities to manage projects of this magnitude, including scheduling methods, reporting and execution.

1.18 Military Real Property Data – DD Form 1354 Worksheet: The Contractor shall furnish real property data to the Government via the DD Form 1354 worksheet, Building Information Checklist for the Transfer and Acceptance of Military Real Property, for each new construction and/or renovation project awarded, unless otherwise notified. The cost and unit of measure of each individual asset must be identified separately. If demolition work is within the scope of the project, demolished assets and demolition costs must also be identified. The Contractor is responsible for accuracy of data, current up to the time of completion. The Contractor should contact the Real Property Office at 410-918-6222 with questions pertaining to the DD Form 1354 worksheet. For construction data assistance, Contractor may contact the 175th Base Civil Engineer’s Office to speak with the COR, or Project Manager assigned to the project. See attachment 3.

1.19 Inspections: Contractor shall have roof manufacturer inspection team inspect the roof. An inspection of the completed work shall be conducted by the Contracting Officer Representative (COR) prior to reoccupation of the work site by Government Personnel.

1.20 Construction Performance Period: The Contractor shall confirm the proposed construction performance period which is 90 days. The proposed performance period will be included in the Cost Proposal.

1.21 Meetings: A Preconstruction Meeting will be required post award and prior to construction.

Weekly progress meetings will also be required.

1.22 Warranty:

1.22.1 Manufacturer’s Warranty: Contractor to install all TPO roofing system and components in a manner prescribed by Manufacturer to result in a minimum, twenty (20) year Certificate of Warranty on materials and workmanship. Contractor shall make all provisions to ensure Manufacturer acceptance and issuance of Manufacturer Written Warranty, including but not limited to, any corrections and or revisions identified by authorized Manufacturer’s Representative.

1.22.2 Contractor (Installer) Warranty: Contractor shall provide Certificate of Warranty for workmanship, including labor and materials for a period not less than two (2) years from date of Manufacturer’s Letter of Acceptance, which shall indicate contractor has reached substantial completion.

1.23 Quality Control: The Contractor shall establish and maintain quality control to assure compliance with contract requirements and shall maintain records of his quality control for all construction operations required under this section. A copy of these records, as well as the records of corrective action taken, shall be furnished to the Government.

1.24 Existing Utility Interruptions: Do not interrupt utilities serving facilities occupied by Owner or others unless permitted under the following conditions:

1.24.1 Notify the COR prior to arranging with Baltimore Gas and Electric (BG&E) to shut off and turn on electrical and/or natural gas utilities. Notify the COR not less than 7 days in advance of proposed utility interruptions. The Government will be responsible for all BG&E connection fees. Do not proceed with utility interruptions without the COR’s written permission.

1.24.2 Owner’s Trades personnel will make the necessary disconnects of any / all utilities, and for any RTUs the contractor will need to remove, for roofing installation, and reconnections of the same, upon completion by the contractor. Notify the COR not less than 7 days in advance of proposed utility interruptions.

1.25 Product Information: Provide all material submittals utilizing AF IMT 3000. Submittals will be reviewed by the Government and sent back. If a submittal is disapproved, vendor will need to resubmit prior to ordering materials. Submit 1 electronic sets of all AF IMT 3000 with attachments. If a hard copy is required, then the vendor shall submit 1 set.

1.26 Submittals: Prior to start of work, Contractor shall submit the following for review and acceptance by Civil Engineering:

1.26.1 Production Schedule

1.26.2 Safety Plan/AHA

1.26.3 Safety Data Sheets (SDS)

1.26.4 Roofing membrane

1.26.5 Cover board

1.26.6 Insulation

1.26.7 Base flashing

1.26.8 Curb flashing

1.26.9 Sheet metal to include gauge and factory colors available, i.e., coping, flash, drip edge and fascia metals.

1.26.10Tape 1.26.11Adhesives and fasteners 1.26.12Caulking 1.26.13Detail drawing of the roof section 1.26.14Manufacturer Letter of Certification: Documenting that Contractor is qualified to install the Manufacturer’s Roofing System, which will result in Manufacturer’s Warranty, without undue limitations.

1.27 Base Access: The contractor shall comply with all applicable installation/facility access and local security policies and procedures, which may be obtained from the Contracting Officer’s

Representative (COR). The contractor shall also provide all information required for background checks to meet installation access requirements to be accomplished by the local installation’s Security Forces, Director of Emergency Services, or local Security Office. The contractor shall ensure compliance with all personal identity verification requirements as directed by DoD, HAF and/or local policy. Should the Force Protection Condition (FPCON) change, the Government may require changes in contractor security matters or processes.

1.28 Contractor and all associated sub-contractors employees shall comply with adjudication standards and procedures using the National Crime Information Center Interstate Identification Index (NCIC-III) and Terrorist Screening Database (TSDB) (AFI 10-245, AFI 31-101 and AFMAN 31-113), applicable installation, facility and area commander installation/facility access and local security policies and procedures (provided by government representative), or, at OCONUS locations, in accordance with status of forces agreements and other theater regulations.

1.29 All contractor employees, to include subcontractor employees, requiring access to US Government installations, facilities and controlled access areas shall complete AT Level I training within 45 calendar days after contract start date or effective date of incorporation of this requirement into the contract, whichever is applicable. AT Level I may be accomplished by a Level I qualified instructor, completing the Force Protection computer-based training (CBT) course on Joint Knowledge Online (JKO) at https://jkodirect.jten.mil/Atlas2/ faces/page/login/Login.seam. For those without a CAC, select "Non-CAC" user on the JKO site. Tracking for each contractor or subcontractor employee is the responsibility of the COR or unit AT Representative.

2 Roof Replacement Scope of Work:

2.1 Installation Over Existing Metal Roof (Bldg 1122): All installation and work are to be finished in accordance with manufacture guideline for installation.

2.1.1 Contractor shall install new custom fabricated, 22 GA minimum sheet metal covers over the 15 existing 10 ft long translucent skylights. New sheet metal coverings must overlay the existing 16” wide panel, spanning from seam to seam and be structural to accept foot traffic.

2.1.2 Contractor shall install 2.0-inch-thick flute filler insulation (loose laid) over entire existing metal roof surface in between seams of existing metal roof panels.

2.1.3 Contractor shall install 1/2” DensDeck Prime (4’x8’ boards) over flute filler, mechanically fastened with 16 mechanical fasteners minimum per board. Prior to installation of the new roof, perform pull tests to confirm existing roof panels achieve a pullout value of 300-lbs per fastener.

2.1.4 Contractor shall install new wood nailers along perimeter edge of existing standing seam metal roof system. Perimeter nailers to match height of new insulation thickness.

2.1.5 Contractor shall install a single ply membrane 0.60 mil (white in color) fully adhered membrane roofing system that is fabricated of a Thermoplastic polyolefin (TPO) compound over new roof assembly. New TPO shall be installed over entire roof.

Note: Only install as much insulation as can be covered in the same working shift and prevent any water from getting under the new roof system.

SCALISE, STEPHANIE M MSgt USAF ANG 175 MSG/175 MSC Is this brand name specific or equal? If brand name, needs JA

2.1.6 Remove and replace gravity vents and install on new wood blocking at minimum warranted height required by the roof system manufacturer. New gravity vents to match existing gravity vent profile.

2.1.7 Contractor shall install new Philly style counterflashing along brick wall transition. Sheet metal to be 24 GA min kynar coated steel.

2.1.8 Install new drip edge, 6” box gutter, and two 3”x4” downspouts along edge of roof. Gutter and downspout details to be 24 GA kynar coated steel and fabricated/installed in accordance with SMACNA recommendations. Paint gutter and downspouts Sherwin Williams Urbane Bronze.

2.1.9 Install 24 GA kynar metal fascia on short side of roof color to be Sherwin Williams Urbane Bronze.

2.1.10 Remove and replace existing copper condenser lines that run across the roof. Reinsulate new condenser lines. Support new lines with non-penetrating new dura-block style supports.

2.1.11 Contractor shall install 1/2” DensDeck to the 4 ft high walls and flat section of the raised 10 ft x 10 ft metal box above the shop piston area. Cover the entire box with fully adhered TPO membrane directly to DensDeck.

2.1.12 Contractor shall install new crickets on the upslope side of the piston area box. Ensure water will divert around the box.

2.1.12.1 Contractor shall coordinate with CE for trades personnel to disconnect and reconnect utilities.

2.2 Overlay modified roof area over Bldg 1121 with new TPO roof system:

2.3 All installation and work are to be finished in accordance with manufacture guideline for installation.

2.3.1 Install 1/2” DensDeck Prime (4’x8’ boards) directly over top of existing modified roof system. Attach DensDeck boards with 16 mechanical fasteners per board.

2.3.2 Install new 1/2” plywood nailers along perimeter edge of existing standing seam metal roof system.

2.3.3 Install fully adhered 60-mil TPO membrane roof system with Low-VOC adhesive in accordance with manufacturer’s 20-year standard NDL roof specifications/details. Note:

Only install as much insulation as can be covered in the same working shift and prevent any water from getting under the new roof system.

2.3.4 Install new Philly style counter flashing along brick wall transition. Sheet metal to be 24 GA min kynar coated steel.

2.3.5 Install new drip edge, 6” box gutter, and 3”x4” downspouts along edge of roof. Drip edge, gutter, and downspout details to be 24 GA kynar coated steel and fabricated/installed in accordance with Sheet Metal and Air Conditioning Contractors' National Association (SMACNA) recommendations.

2.3.5.1 Contractor shall coordinate with CE for trades personnel to disconnect and reconnect utilities.

3 Sundry Elements:

3.1 Roof access: Roof can be accessed with an extension ladder firmly tied off to the edge of the roof. There are 15 coated nonstructural translucent skylights that exist and present a potential fall hazard. The skylights have been coated so it appears as if they are a part of the metal roof system. They are marked with a red ‘x’.

3.2 Interior access shall be granted for contractor to see all existing structural conditions (spacing of steel purlins and supports), including any existing utilities underneath.

4 Certifications: Contractor shall provide a copy of the certification to ensure Register Roof Observer (RRO) is certified by the Roof Consulting Institute (RCI) and that the certification is up to date. The RRO shall have a minimum of three years’ experience as an RRO and must provide documentation of relevant experience in the installation monitoring, documentation, and inspection of roofing systems installations. Provide specific details regarding the installation monitoring and inspection of EPDM roofing systems within the RRO experience documentation. RRO must be fluent in English.

5 Standards: CHAPTER VII - STANDARDS FOR NEW ROOFING CONSTRUCTION, RE-

ROOFING CONSTRUCTION, AND ROOFING SYSTEM GUARANTEE

REQUIREMENTS – July2019 (https://dgs.maryland.gov/Documents/ofp/RoofingPolicy.pdf), Unified Facilities Criteria (UFC) 3-110-03 1 May 2012, Change 5, 12 June 2020, ASTM D6878/D6878M-21 Standard Specification for Thermoplastic Polyolefin-Based Sheet Roofing, ASCE 7 - Minimum Design Loads for Buildings and Other Structures, UL 790 Class A for fire resistance, UL 580 Class 90 for wind uplift resistance.

6 Codes: National Fire Protection Association, national building code adopted by the local jurisdiction for wind, snow and seismic loads, Underwriters Laboratories and Factory Mutual

7 References: Factory Mutual Standard 4470 - Approval Standard for Class 1 Roof Covers, Underwriters Laboratories (UL) - Roofing Systems and Materials Guide (TGFU R1306), American Society for Testing and Materials (ASTM) - Annual Book of ASTM Standards, Sheet Metal and Air Conditioning Contractors National Association, Inc. (SMACNA) - Architectural Sheet Metal Manual, American Society of Civil Engineers (ASCE)

8 List of attachments:

8.1 Base map (Site Plan)

8.2 Roof Plans – As-Built

8.3 Roof Details – As-Built

8.4 Roof Plan/Elevation

--------- End Statement of Work ---------https://dgs.maryland.gov/Documents/ofp/RoofingPolicy.pdf

1- SHORE UP GREY TRANSLUCENT PANELS 16 EACH

2 – REPLACE VENTS

3 – REPLACE INSULATED COPPER LINES

4 – MODIFIED BITUMEN ROOF

5 - MODIFIED BITUMEN AND METAL SEAM ROOF ABUTMENT

6 – METAL SEAM ROOM 16” WIDE x 2” HIGH PANELS

7- PROVIDE CRICKET AND DIVERT WATER FLOW AT BOX

8 – UNDERSIDE OF METAL SEAM ROOF

9- GROUNDVIEW 1

10- GROUNDVIEW 2