GSA 017410 Construction Indoor Air Quality FY15 Update Oct. 1, 2014.docx

[Div 1 Reviewer/Writer Instructions: 1. Turn ON Show/Hide feature in the Home tab to see any hidden instructions that may be embedded in each specification. Turn OFF after completing your final version. 2. Comments in [ ] are guidance for spec. writers to consider during the design phase. Delete in final version.]

SECTION 017410 - CONSTRUCTION INDOOR AIR QUALITY (IAQ) MANAGEMENT PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and other Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section includes requirements for the development of a Construction Indoor Air Quality Management Plan (alternately referred to as the Plan). The Plan shall be developed by the Contractor or other qualified party under contract to the Contractor as approved by the Owner and Architect. The Plan shall be implemented by the Contractor and the trade contractors throughout the duration of the project construction, and shall be documented per the Submittal Requirements of this Section.

1.3 RELATED SECTIONS

A. All sections of the Specifications related to interior construction, MEP systems, and items affecting indoor air quality.

B. Section 012000 - Volatile Organic Compound Limits for Adhesives, Sealants, Paints and Coatings

C. Section 018113 - Sustainable Design Requirements

D. Section 019113 – General Commissioning Requirements

1.4 REFERENCE STANDARDS

A. The Steel Metal and Air Conditioner National Contractors Association (SMACNA) IAQ guidelines for Occupied Buildings under Construction, 2nd Edition 2007, ANSI/SMACNA 008- 2008, www.smacna.org.

B. ANSI / ASHRAE 52.2-1999, “Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size”, www.ashrae.org

C. United States Environmental Protection Agency, “Compendium of Methods for the Determination of Air Pollutants in Indoor Air”

1.5 CONSTRUCTION IAQ MANAGEMENT PLAN - OVERVIEW

A. The General Contractor or other qualified party as noted in Section 1.2.A shall prepare and submit a Construction IAQ Management Plan to the Owner and Architect for approval. The Construction IAQ Management Plan shall meet the following criteria, based on the criteria of LEED NC v.3.0:

1. Construction activities shall be planned to meet or exceed the standards included in Chapter 3 of the Sheet Metal and Air Conditioning National Contractors’ Association (SMACNA) “IAQ Guidelines for Occupied Buildings under Construction”, 2nd Edition 2007.

2. Absorptive materials shall be protected from moisture damage when stored on-site and after installation.

3. Filtration media shall be installed to protect ductwork and/or equipment used during the construction process.

4. A Sequence of Finish Installation Plan shall be developed, highlighting measures to reduce the absorption of VOCs by materials that act as ‘sinks’.

5. Immediately prior to occupancy, the building shall be subject to an outside air flush out, OR, shall be subject to pre-occupancy air quality testing.

1.6 SUBMITTALS

A. LEED Submittal Requirements: The Contractor and/or sub-contractor shall submit the following required records and documents:

1. A copy of the draft and final versions of the Construction IAQ Management Plan, as defined in articles 1.5 and 3.1 of this Section. The draft Plan shall be submitted to the Owner and Architect for review and approval at least 30 days prior to the commencement of work.

2. A construction log identifying the start-up date and duration of all major Construction IAQ Management Plan control measures.

a. If HVAC systems are used during construction, include a schedule of filter replacements or change-outs. Filter information shall include manufacturer, model number, MERV rating, and location of where it was installed.

3. Photographs that document the implementation of the Construction IAQ Management Plan throughout the course of the project construction. Examples include photographs of ductwork sealing and protection, temporary ventilation measures, and conditions of on-site materials storage (to prevent moisture damage). Photographs shall include integral date stamping, and shall be submitted with brief descriptions, or be referenced to project meeting minutes or similar project documents. A minimum of 30 photographs shall be submitted per building, showing conditions on a least five different occasions.

4. Product Cut Sheets for filtration media used during construction and installed immediately prior to occupancy, with MERV values highlighted. Cut sheets shall be submitted with the Contractor or sub-contractor’s stamp, as confirmation that the submitted products are the products installed in the project.

5. A construction log identifying the procedures and conditions of the building flush-out or air quality testing.

a. For flush-outs, provide the start dates and the flush-out duration, plus the air flow rates, air temperatures, and relative humidity ranges maintained. If the flush-out is done in stages, identify the building locations as part of the log.

b. For air quality testing, provide the dates of testing, the sampling locations, and the test results from the air quality testing agency. If retesting is required due to non- compliance with the referenced standard, provide a log of the flush-out procedures used prior to retesting, as well as the new retesting results.

1.7 DEFINITIONS

A. Type 1 Materials: Materials and finishes that act as sources of VOC or particulate contamination.

Type 1 materials can include "wet" products, such as paints, sealants, adhesives, caulks, sealers and fireproofing materials as well as “dry” products such floor coverings with plasticizers, and engineered wood with formaldehyde.

B. Type 2 Materials: Materials and finishes which are woven, fibrous, or porous in nature, and tend to absorb chemicals or particulates released by Type 1 materials. Examples include textiles, carpeting, acoustical ceiling tiles and gypsum board. Type 2 materials can become "sinks" for deleterious substances which may be released later, or collectors of contaminants that may promote subsequent bacterial growth.

PART 2 - PRODUCTS

2.1 FILTRATION MEDIA

A. If air handlers are used during construction, filtration media must be installed at the ends of return air ductwork, at return air grilles in an open plenum or chase, and at return air openings at mechanical rooms housing the air handling units. The filtration media shall have a Minimum Efficiency Reporting Value (MERV) of 8, as determined by ASHRAE 52.2-1999.

B. Filters at air handling units used during construction shall be MERV 10 or better.

C. Building flush-outs, as defined in article 3.3 below, shall be conducted with new MERV 13 filtration media installed at the air handling units used for the flush-outs. Upon completion of the flush-outs, the Construction Manager shall inspect the condition of the MERV 13 filters and replace any that have collected significant dust and particulates through the flush-out process.

PART 3 - EXECUTION

3.1 CONSTRUCTION IAQ MANAGEMENT PLAN – DETAILED REQUIREMENTS

A. Compliance with SMACNA Guidelines:

1. Chapter 3 of the referenced “IAQ Guidelines for Occupied Buildings under Construction” outlines IAQ measures in five categories as listed below. The Construction IAQ Management Plan shall be organized in accordance with the SMACNA format, and shall address measures to be implemented by the Contractor and/or Subcontractors in each of the five categories, including subsections. All Subsections shall be listed in the Plan; items that are not applicable for this project should be listed as such by the contractor.

1. HVAC Protection

· Return Side

· Central Filtration

· Supply Side

· Duct Cleaning

2. Source Control

· Product Substitution

· Modifying Equipment Operation

· Changing Work Practices

· Local Exhaust

· Air Cleaning

· Cover or Seal

3. Pathway Interruption

· Depressurize Work Area

· Pressurize Occupied Space

· Erect Barriers to Contain Construction Areas

· Relocate Pollutant Sources

· Temporarily Seal the Building

4. Housekeeping

· Routine Jobsite Cleaning

· Protection of Stored Materials

· Protection of Materials During and After Installation

· Scheduling

· Airing-Out of New Materials

· Sequencing of Finish Applications

· Proper Curing of Concrete before Covering

· Installation During Unoccupied Periods

· Avoidance of Building Occupancy While Pollutants Are Present

B. Protection of Materials from Moisture Damage:

1. As part of the Housekeeping section of the Construction IAQ Management Plan, measures to prevent installed materials or material stored on-site from moisture damage shall be described. This section should also describe measures to be taken if moisture damage does occur to absorptive materials during the course of construction.

C. Installation and Replacement of Filtration Media:

1. Under the HVAC Protection section of the Construction IAQ Management Plan, a description of the filtration media in all ventilation equipment shall be provided. The description shall include replacement criteria for filtration media during construction and confirmation of filtration media replacement for all equipment immediately prior to occupancy. Filtration media shall meet the requirements of article 2.01 of this Section.

D. Sequence of Finish Installation for Materials:

1. Where feasible, absorptive materials (referred to herein as “Type 2” products) shall be installed after the installation of materials or finishes which have high short-term emissions of VOC’s, formaldehyde, particulates, or other air-borne compounds (referred to herein as “Type 1” products).

1. Type 2 materials include, but are not limited to: carpets; acoustical ceiling panels; fabric wall coverings; insulations (exposed to the airstream); upholstered furnishings; and other woven, fibrous or porous materials.

2. Type 1 materials include, but are not limited to: adhesives, sealants and glazing compounds (specifically those with petrochemical vehicles or carriers); paints, wood preservatives and finishes; control and /or expansion joint fillers; hard finishes requiring adhesive installation; gypsum board (with associated finish processes and products); and composite or engineered wood products with formaldehyde binders.

2. The Contractor shall develop a separate sequencing plan that identifies feasible opportunities to meet the above-stated goals for the project. The plan shall be submitted to the Architect and Owner in accordance with the Submittal Requirements of this specification.

3.2 IMPLEMENTATION AND COORDINATION

A. The Contractor shall be responsible for implementation of the Construction IAQ Management Plan, and for the coordination of the Plan with all affected trades. The Contractor shall designate one individual as their Construction IAQ Representative, who will be responsible for communicating the progress of the Plan with the Owner and Architect on regular basis, and for assembling the required documentation. The Contractor shall include provisions in the Construction IAQ Management Plan for addressing conditions in the field that do not adhere to the Plan, including provisions to implement a stop work order, or to rectify non-compliant conditions.

B. Sub-contractors shall be responsible for the implementation of specific control measures, as specified in the Construction IAQ Management Plan. Sub-contractors shall coordinate their responsibilities through the Contractor’s designated Construction IAQ Representative.

3.3 BUILDING FLUSH-OUTS AND PRE-OCCUPANCY INDOOR AIR QUALITY TESTING

A. All occupied spaces the building must undergo either a Flush-out or Air Quality Testing. Contractor shall submit a written request to the Contracting Officer for approval prior to conducting the Building Flush Out and/or Air Quality Testing. Any such requests shall not be submitted until all interior finishes have been installed. A combination of the two strategies can be used in the same building. The Contractor shall provide a:

1. Flush-out:

1. A total of 14,000 cubic feet of outside air per square foot of floor area must be supplied to all occupied spaces of the buildings. A total of 3,500 cubic feet of outside air per square foot of floor area must be supplied to all spaces prior to occupancy.

2. A minimum of 0.30 cfm/sf of outside air, or the design minimum outside air rate, must be provided during the flush-out. Higher amounts of outside air may be provided to reduce the duration of the flush-out period.

3. During the flush-out, an internal temperature of at least 60 degrees F must be maintained, and the relative humidity can be no higher than 60%.

4. If a space is occupied prior to the completion of the flush-out (but after the initial 3,500 cubic feet of outside air per square foot of floor area is supplied), the flush- out ventilation rates shall begin at least three hours prior to occupancy each day, until the flush-out of the space is complete.

2. Air Quality Testing:

1. Conduct baseline IAQ testing using the protocols consistent with the United States Environmental Protection Agency, “Compendium of Methods for the Determination of Air Pollutants in Indoor Air”. Demonstrate that the following contaminant maximum concentrations are not exceeded:

Formaldehyde: 27 parts per billion

1. Particulates (PM10): 50 micrograms per cubic meter

2. Total Volatile Organic Compounds (TVOC): 500 micrograms per cubic meter

3. 4-Phenylcyclohexene (4-PCH): 6.5 micrograms per cubic meter*

4. Carbon Monoxide (CO): 9 parts per million and no greater than 2 parts per million above outdoor levels

* This test is only required if carpets and fabrics with styrene butadiene rubber (SBR) latex backing material are installed.

2. For each sampling point where the maximum concentration limits are exceeded conduct additional flush-out with outside air and retest the specific parameter(s) exceeded to indicate the requirements are achieved. Repeat procedure until all requirements have been met. When retesting non-complying building areas, take samples from the same locations as in the first test.

3. The air sample testing shall be conducted as follows:

1. All measurements shall be conducted prior to occupancy, but during normal occupied hours, and with the building ventilation system starting at the normal daily start time and operated at the minimum outside air flow rate for the occupied mode throughout the duration of the air testing.

2. The building shall have all interior finishes installed, including but not limited to millwork, doors, paint, carpet and acoustic tiles. Non-fixed furnishings such as workstations and partitions are encouraged, but not required, to be in place for the testing.

3. The number of sampling locations will vary depending upon the size of the building and number of ventilation systems. For each portion of the building served by a separate ventilation system, the number of sampling points shall not be less than one per 25,000 sq.ft., or for each contiguous floor area, whichever is larger, and include areas with the least ventilation and greatest presumed source strength.

4. Air samples shall be collected between 3 feet and 6 feet from the floor to represent the breathing zone of occupants, and over a minimum 4-hour period.

4. The flush-out and/or air quality testing shall be documented in accordance with part 1.6 Submittals of this Section.

017410 END OF SECTION

CONSTRUCTION INDOOR AIR QUALITY MGT FY15 Update Oct. 1, 2014 017410 - 1 image1.png