Page 294 - The Engineering Guide to LEED-New Construction Sustainable Construction for Engineers

LEED Indoor Envir onmental Quality 257

6.3 IEQ Credit Subcategory 3: Construction IAQ Management Plan

IEQ Credit 3.1: Construction IAQ Management Plan—during Construction
Many activities during construction can have an impact on the indoor air quality of portions
of buildings that are occupied during the construction phase and on the indoor air quality of
the entire building after construction. To reduce this, there are a series of recommended steps
to be taken during construction that will keep these impacts to a minimum. The steps range
from keeping construction areas physically segregated from built areas as much as possible,
to ensuring that building materials do not get contaminated with moisture or chemicals
prior to or after installation. IEQc3.1 is worth one point in both LEED 2.2 and LEED 2009.

USGBC Rating System
LEED-NC 2.2 lists the Intent, Requirements, and Potential Technologies and Strategies
for IEQc3.1 as follows, with updated references as per LEED 2009:

Intent
Reduce indoor air quality problems resulting from the construction/renovation process in
order to help sustain the comfort and well-being of construction workers and building
occupants.
Requirements
Develop and implement an Indoor Air Quality (IAQ) Management Plan for the construction
and pre-occupancy phases of the building as follows:
• During construction meet or exceed the recommended Control Measures of the Sheet
Metal and Air Conditioning National Contractors Association (SMACNA) IAQ Guidelines
for Occupied Buildings under Construction, 2nd edition, Nov. 2007, Chapter 3.
• Protect stored on-site or installed absorptive materials from moisture damage.
• If permanently installed air handlers are used during construction, filtration media
with a Minimum Efficiency Reporting Value (MERV) of 8 shall be used at each return
air grille, as determined by ASHRAE 52.2-1999 with errata but without addenda.
Replace all filtration media immediately prior to occupancy.
Potential Technologies and Strategies
Adopt an IAQ management plan to protect the HVAC system during construction, control
pollutant sources and interrupt contamination pathways. Sequence the installation of materials
to avoid contamination of absorptive materials such as insulation, carpeting, ceiling tile and
gypsum wallboard. Coordinate with Indoor Environmental Quality Credits 3.2 and 5 to
determine the appropriate specifications and schedules for filtration media. If possible, avoid
using permanently installed air handlers for temporary heating/cooling during construction.
Consult the LEED-NC v2.2 and v2009 Reference Guides for more detailed information on how
to ensure the well-being of construction workers and building occupants if permanently
installed air handlers must be used during construction.

Calculations and Considerations (LEED 2009)
Adherence to this credit is highly dependent on the construction phase activities, and
this should be planned for prior to construction. Scheduling and sequencing are critical,
as is management of many daily construction activities. An IAQ management plan
must be devised and adhered to that incorporates the following three main requirements
of this credit: the Sheet Metal and Air Conditioning National Contractors Association