10_5_HCH_Ext_Caulking_and_Cleaning_SOW_Final_41519.docx

Exterior Stone Restoration Hatfield CH OR0052ZZ Portland, OR 97204

Project Description:

Contractor shall provide all labor, materials, tools and equipment necessary for the following installations: Re-caulking all stone joints and hand and deep cleaning via vortex or poultice patch, the buildings limestone façade. The project is located at the Hatfield CH located at 1000 SW 3rd Avenue Portland, Oregon 97204. The Hatfield CH is a 16 story building standing 318 feet above grade. All work shall be in accordance with these specifications and all attachments.

Performance Period:

The performance period for this contract shall be 300 (three hundred) calendar days from contract award to substantial completion. The Contractor shall commence all non-physical construction requirements of this contract; to include submittal of bonds and/or insurance documents, background investigation documents (as applicable), and material submittals within 15 (fifteen) calendar days after contract award. Notice to Proceed (NTP) will be issued by the Contracting Officer (CO) upon acceptance by GSA of all required documents, submittals and receipt of Security clearances. Physical work on the site shall only be allowed after the issuance of NTP.

Final contract completion shall occur no later than 30 (thirty) days after project substantial completion. Final contract completion includes all site cleanup activities, punch list items, closeout documentation and final invoicing (reference 1.4 Submittals).

Work Specifications:

A. Swing Stage, Davits and Fall Protection The Hatfield Court house is equipped with davit anchors and fall protection anchoring points for use with bosun’s chairs or swing stage platforms. These are available for use in this project. Contractor shall be responsible for assessing this equipment for safety and suitability for use under this contract. GSA will not be responsible for safety and suitability of equipment for this project.

B. Caulking/Sealant Removal

1. Contractor shall remove existing sealant from limestone wall panel joints, limestone wall caps and limestone to metal joints including louvers, windows and doors, including exterior walls, and terrace parapet walls and coping stones. Linear footage of joints estimated to be approximately 107,500 linear feet. It shall be the contractors responsibility to verify all lengths and quantities.

2. Contractor shall provide protective coverings for all adjacent landscaping, walkways, and entrances to catch falling debris. All debris to be collected and disposed of at the end of each workday.

C. Caulking/Sealant Repointing Contractor shall repoint/reseal all limestone wall panel joints, limestone wall caps and limestone to metal joints including louvers, windows and doors, including exterior walls, and terrace parapet walls and coping stones. Linear footage of joints estimated to be approximately 107,500 linear feet. It shall be the contractors responsibility to verify all lengths and quantities.

1. Contractor shall use bond breaker tape Dow Corning 795 silicone sealant or approved equivalent.

2. Where there are weep holes in the sealant at the bottom of wall panels, Contractor shall note location of all weep holes and ensure that weep holes are present and functional after applying silicone sealant.

3. Contractor shall meet all manufacture’s requirements and recommendations for products used in the accomplishment of this work.

Limestone Cleaning The contractor shall provide ALL materials, tools and labor for the following: Cleaning of the exterior limestone. Square footage of stone on the building exterior is estimated to be approximately 152,000 sq. ft. It shall be the contractors responsibility to verify all quantities.

Preface:

The cleaning or removal of stains from stone may involve the use of liquids, detergents or solvents which may run off on adjacent material discolor the stone or drive the stains deeper into porous stones. Contractor shall use product and techniques industry approved for cleaning the combinations of dirt/stain and stone present on this facility.

NOTE: THIS WORK SHOULD BE ACCOMPLISHED BY AN EXPERIENCED CONTRACTOR. A minimum of five years’ experience in this type of work is required.

Products:

Contractor shall use industry approved and tested products specifically designed for cleaning soft stone surfaces. Such as those manufactured by ProSoCo, Inc., or COR approved equal.

Materials:

Limestone (unpolished): Sodium hydroxide, (pH 14), undiluted.

For heavy high pollution stains, an alkaline-based prewash such as "Sure Klean 766 Limestone & Masonry Prewash" or equal, follow manufacturer's instructions including rinse cycle.

Followed up with "Sure Klean Limestone & Masonry Afterwash" or equal, as per manufacturer's instructions.

Clean, potable water (heated to a temperature effective and tested for cleaning procedure and approved by the Contracting officers Representative).

Equipment:

Pressure water rinsing equipment (measuring between 100 and 400 psi for low-pressure; between 400 and 1000 psi for medium pressure).

Fan-type spray tips (15 -45 degree fan spray).

Stiff fiber-bristle brushes.

Plastic spatula.

Execution; Examination:

Examine site conditions to determine that current drainage is sufficient for adequately and safely removing cleaning waste and run-off from the site.

Test-clean a small, inconspicuous area to check for adverse effects and damage to the material.

Preparation:

Protection:

Protect surrounding materials on the site and adjacent building surfaces from coming in contact with the cleaning materials and run-off.

Provide workers with necessary protection against cleaning chemicals, overspray and run-off.

Prevent cleaning chemicals from coming in contact with any painted, polished or metallic surfaces.

Divert flow of run-off to drains in compliance with municipal codes. Comply with municipal codes regarding containment and disposal of cleaning materials.

Surface Preparation:

Before proceeding with cleaning operations, remove all miscellaneous hardware, anchors and bird excrement from the surface to prevent any discoloration.

NOTE: BIRD EXCREMENT THAT COMES IN CONTACT WITH CLEANING SOLUTION WILL LEAVE A PERMANENT DARK-COLORED STAIN ON THE SURFACE.

Check for open holes and joints in surface and repoint mortar joints and caulk gaps around window and door openings, as required to prevent water and cleaning solutions from penetrating deeply into the wall.

Clean the limestone working from bottom to top.

Erection, Installation, Application:

NOTE: WHEN CLEANING, AVOID OVERCLEANING. AIM FOR ACHIEVING 85% CLEAN. MOST DAMAGE OCCURS WHEN ATTEMPTING TO CLEAN THE LAST 15%.

NOTE: TEST-CLEAN A SMALL AREA TO DETERMINE EFFECTIVENESS OF CLEANING METHODS, MATERIALS, EQUIPMENT AND WORKING PRESSURES SELECTED BEFORE PROCEEDING WITH CLEANING OPERATIONS ON LARGER AREAS. ADJUST METHODS, MATERIALS, EQUIPMENT, PRESSURES, ETC. AS NECESSARY. DO NOT PROCEED UNTIL AN ACCEPTABLE CLEANING OPERATION HAS BEEN APPROVED AND FULLY DOCUMENTED.

NOTE: DO NOT TREAT THE SURFACE WITH ACID CLEANER MORE THAN ONCE.

Pre-wet limestone surface using a low pressure wash (between 100 and 400 psi).

Apply a heavy coating of limestone pre-wash using a soft, nylon bristle brush. Follow manufacturer's applications instructions.

Allow to stand for one hour or as long as determined by testing.

Thoroughly rinse the surface using high pressure water (between 800 and 1000 psi) until all suds have disappeared.

Rinse all corners, moldings, and interstices to remove all traces of chemical without damaging surrounding materials.

Rinse water should be heated to 150-180 degrees Fahrenheit or as determined most effective during testing.

While surface is still wet from rinsing off pre-wash, apply limestone afterwash with a soft, fiber bristled brush.

Dilute limestone afterwash with as much water as determined effective during testing.

If surface has begun to dry, re-wet before applying afterwash.

Cover all corners, moldings, and interstices of the limestone.

Allow to stand for 3-5 minutes or as long as determined by testing.

Thoroughly rinse the surface using high pressure water (between 400 and 1000 psi), with a water flow of 6-8 gallons per minute.

Rinse all corners, moldings, and interstices to remove all traces of chemical without damaging surrounding materials.

Heat rinse water to a temperature determined most effective during testing.

Submittals:

Material submittals shall be provided to the Government no later than (NLT) 15 (fifteen) calendar days after award of contract. All submittals shall be accompanied by a completed GSA Submittal Transmittal Form (see attached). Clearly mark material submittals to identify which products and options are applicable to this contract (this is especially important with product data in which multiple items and/or optional items are provided for on the same sheet). The rejection of a submittal by the GSA COR (General Services Administration Contracting Officer’s Representative) is not sufficient reason to extend the contract performance period. Upon GSA COR acceptance of submittals, the GSA Contracting Officer (CO) will issue notice to proceed (NTP) to the Contractor. The actual Construction Period available to the Contractor will vary depending on the amount of time taken to complete the bonds, background investigations, and material submittal process. Allow 10 (ten) calendar days for review and approval of all submittals. Contractor shall provide submittals and receive approval prior to ordering materials.

Project schedule.

Site Protection Plan Caulking/Sealing products, manufacture’s technical data.

Cleaning method.

Cleaning products, manufacture’s technical data.

Scaffolding/Swing Stage Rigging plan.

4. Key Sustainable Products Compliance as applicable (see paragraph 1.7, Material Compliance Requirements below).

Closeout documents upon completion to include:

Warranties.

Payroll Documentation (certified payrolls, SF1413s, etc.).

Final invoice and payment support documents.

Release of Claims.

Security:

All workers shall pass a background screening prior to the start of the work.

The GSA Project Manager will provide the successful offeror with a Requesting Official Contractor Approval List for completion by the contractor for all personnel to be employed at the work site. This list shall be returned to the Project Manager/COR within 10 days of contract award. Contractor shall provide the following information on this list for approval:

Full Legal Name Position Title Dates Required on the Project Subcontractor Name Escorting information (if allowed by GSA) Following review of the Requesting Official Contractor Approval List by the Project Manager/COR, this list will be submitted by the Project Manager/COR to GSA’s Zonal Help Desk to initiate the security clearance process.

The Zonal Help Desk will then provide the contractor with a partially completed electronic Contractor Information Worksheet (CIW) and OF 306 (samples attached) and associated training as required by the contractor.

CIW’s and OF 306 forms shall be completed with all requested information.

Paper copies of CIW’s will not be accepted. The CIW is required to be submitted in MS Word document (Version 4 12/2010 Scanned PDF documents will not be accepted.

Form OF 306 shall be signed and submitted in PDF format.

All documents provided to GSA shall be encrypted.

Submit both the completed CIW’s and signed OF 306 electronically to: zoned-hspd12@gsa.gov Do not submit CIW and OF 306 forms for individuals not previously identified on the Requesting Official Contractor Approval List. If additional employees are required, contractor shall provide an updated Requesting Official Contractor Approval List to the GSA Project Manager/COR for approval.

Following receipt of a validated and legible CIW and OF 306 by the Zone D Help Desk, the information from the CIW will be entered into GSA’s database, and the contractor will be sponsored. Once sponsored and notified via email, the contractor employee(s) shall go on-line and make an appointment at any shared service credentialing office to get their fingerprints taken. Use the following website to locate shared credentialing centers: http://www.fedidcard.gov/centerlocator.aspx Once an employee is approved, an adjudication email will be sent to the contractor and employee stating that OPM FSEM has determined that this individual is fit to provide 6 months of contractor support to the General Services Administration (GSA) including a “starting on date” All workers shall have a photo ID and a copy of their OPM adjudication email with them at all times when they are on the work site.

All workers shall confine operations to areas permitted.

Specification Compliance Requirements:

Code and Design Standards:

The Contractor shall secure all needed permits and certifications and shall ensure compliance with federal, state, and local codes and design standards, latest editions, including, but not limited to the following as applicable:

International Building Code (IBC, International Code Council):

http://codes.iccsafe.org/app/book/toc/2015/I National Electrical Code, NFPA 70 (National Fire Protection Association):

http://www.nfpa.org/codes-and-standards Facility Standards for the Public Building Service, PBS/P-100 (2017): http://gsap100.wbdg.org/ OSHA safety regulations:

https://www.osha.gov/law-regs.html Guidelines for Using High Pressure Cleaning Equipment on Masonry:

https://www.gsa.gov/portal/content/111966 Material Compliance Requirements:

Key Sustainable Products (KSP): The use of KSP standards is mandatory. The Contractor shall specify the brand name and product that shall be used to meet each applicable KSP standard below. The Contractor shall provide the required data submittals to the Contracting Officer (CO) or their designee prior to the start of construction for approval. The CO’s designee will verify that the products submitted are compliant with these KSPs. The Contractor shall use standards listed in the Green Procurement Compilation https://sftool.gov/greenprocurement for other products not listed below.

No asbestos containing materials shall be installed in the performance of this work.

Warranty: Submit a copy of the manufacturer's standard warranty to the COR. The Government shall be a beneficiary of the terms of this warranty.

Recycling Requirements:

Maximum recycling of all construction & demolition debris required.

Divert demolition recyclable / reusable items and materials from landfills and incineration facilities to appropriate reusable material sites.

Additional Project Requirements:

Contractor use of premises:

Contractor shall supply their own dumpster or remove trash daily. No waste shall be put in building dumpsters or containers.

On-site storage is available, upon concurrence with property management office.

Deliveries of products by vendors shall be coordinated with the GSA COR at least 24 hours in advance.

On-site parking is available, upon concurrence with property management office.

All persons working for or under a General Contractor or Sub-Contractor shall maintain safely marked areas of work.

The building tenants shall have no functional disruptions resulting from the contractor’s planning and execution of project work.

Work Hours:

All work shall be performed during the normal working hours of the building occupants which are 7:00 am to 5:30 pm Monday through Friday unless approved otherwise by the GSA.

Clean-up:

The contractor shall install protective measures to protect existing conditions and to contain dust and debris during construction to ensure a safe and irritant free work environment for building occupants.

Work shall provide for protection of all finishes and furnishings, and shall include cleanup of work site during and after work performed. Work shall include removal of all unused material, refuse and debris from the work area.

Dispose of all construction debris according to Federal, State and Local requirements.

Work areas shall be free of debris and cleaned to a dust free environment prior to the end of the contractor’s work day.

If equipment or building surfaces are damaged, contractor shall repair to original specification.

Material used for touchup and repairs shall blend with the color and texture of surrounding surface and be applied in accordance with the manufacture's recommendations.

Inspections:

At least 10 (ten) business days prior to completion of construction, the contractor representative shall submit a request to schedule a walk through inspection with the GSA COR and Property Manager to identify any "punch list" items. The on-site contractor representative shall inspect the quality of work and identify and address discrepancies prior to holding the walk through with the GSA COR and Property Manager.

Punch list items identified during the walk-through shall be addressed within 3 (three) working days after the inspection.

Attachments:

Drawings: ELEV-E, ELEV-EH, ELEV-N, ELEV-NH, ELEV-S, ELEV-SH, Elev-w, ELEV-WH, ELEV-WH2 Requesting Official Contractor Approval List Submittal Transmittal Form

CIW

OF306

Wage Determination PBS Sustainable Product Requirements

Correspondence: Project Contacts:

Reference Photograph (s):

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