Final Combined Book v.4.0 test

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EXHIBIT “A” Attachment to Agreement No. 1213126J-000.620027, dated July 16, 2018 , by and between SPEARHEAD CONSTRUCTION LLC and Skanska Walsh Design-Build JV for Furnish and Install Building Framing and Partitions for Pedestrian Bridge B at LaGuardia Airport Central Terminal Building Replacement Project, New York, LaGuardia Airport Queens, New York .  Kitchen Equipment and Shelving, Metal Storage Shelving  Custom Office Furniture  Wood or Hollow Metal Door frames, Window frames, Access Panels.  Handrail Systems, Wall and Door Protection  Toilet, Bath and Laundry Accessories  Fire Extinguisher Cabinets  Guard Rail System  AED Cabinets  Interior Wayfinding and Signage  Other building equipment specialties, furnishing and finishes noted on drawings b) All supplemental framing for seismic, bracing, bridging, blocking, kickers, hole reinforcing plates or backing plates and support systems at MEP and Fire Sprinkler openings, security cameras, strobes, speakers, life safety devices, supports, or other pre-fabricated assemblies. L. Insulation Systems: Subcontractor to furnish and install Thermal and Acoustical Insulation to achieve the “R” rating or “STC” rating in thickness and types specified at locations required in the Contract Documents including vapor retarder adhesive, fasteners and other accessories required. 1. Install insulation at vertical walls, soffits, ceilings, and locations noted in metal frame systems, interior partitions, gypsum board ceilings systems, soffits, and suspended framing. 2. Install insulation in cavities and spaces behind Subcontractors wall assemblies or above ceiling assemblies. 3. Install insulation at horizontal transitions in walls systems and lay-on locations on top of gypsum board ceiling systems. 4. At furred wall conditions install insulation from floor to bottom of deck above as shown. 5. Accessories: Include impaling pins, shields, mounting plates, adhesives, and other manufacturer required items for a complete installation. 6. Allow provisions around pipe, conduit, chases, structural or panel connections, or other access systems to maintain the thermal, fire rating or sound rating values or performance. 1. Install joint sealants where: a) This Subcontractor’s Work creates joint between its Work and existing adjacent surface, substrate or installation installed by other trades (e.g., joints finishing to CMU partitions or assemblies, Concrete floors/columns/walls/beams, precast decks, panels, walls, structural shapes or angle, at SOFP systems, aluminum frames, metal framing, or backing, expansion joints, door frames, equipment, header walls, cabinets, or locations where this Subcontractor’s Work finishes to other substrates). b) Joints created within and between the installed elements of this Subcontractor’s Work. 2. Acoustical sealants for exposed or concealed joints as specified. 3. All interior joints within Subcontractor’s systems. M. Joint Sealants: Subcontractor to furnish and install all joint sealants related to this Subcontractor’s Work in accordance with Contract Documents.

Exhibit A, Page 10 of 18

Scope of Work/Supply and Clarifications/Qualifications

Version 4.0

(06.2006 ed. Rev. 0)