Builders & Developers

LEED IEQ Credit 3.2 Construction Indoor Air Quality Management Plan—Before Occupancy

Environmental Solutions, Inc. (ESI) staff of Council-Certified Indoor Environmentalists have the knowledge and expertise to review your project and perform the required testing. ESI utilizes an innovative, yet simple, and cost-effective approach to help achieve this important credit certification. ESI has been serving the DC Metropolitan area with  environmental inspections and knowledge of building science for over 15 years.

What is LEED? LEED, or Leadership in Energy and Environmental Design, is transforming the way we think about our indoor environments, where many people spend over 90% of their time. LEED provides building owners and operators with a framework for identifying and implementing practical and measurable green building design, construction, operations and maintenance designs. Developed by the U.S. Green Building Council (USGBC) in 2000, LEED certification provides independent, third-party verification that a building project meets the highest green building and performance measures. There are environmental and financial benefits to earning LEED certification, including tax rebates, zoning allowances, and other incentives.

Benefits of LEED Certification:

  1. Green building is cost-effective
  2. Lower operating costs and increased asset value
  3. Conserve natural resources, lowering both utility bills and impact on the environment
  4. Healthier and safer for occupants
  5. Reduce harmful greenhouse gas emissions
  6. Qualify for tax rebates, zoning allowances and other incentives
  7. Demonstrate an owner’s commitment to environmental

stewardship and social responsibility


An important LEED certification credit for newly constructed or remodeled buildings is LEED IEQ 3.2. This certification’s intent is to reduce indoor air quality (IAQ) problems resulting from construction or renovation to promote the comfort and well-being of construction workers and building occupants. LEED IAQ 3.2 credit requires an IAQ Management Plan, which can be achieved through one of two methods.

A flush-out of the building using the HVAC system can be performed or baseline indoor air quality (IAQ) testing can be used to demonstrate the contaminant maximum concentrations listed below are not exceeded:
ContaminantFormaldehydeParticulates (PM10)Total Volatile Organic Compounds (TVOC)4-Phenylcyclohexene (4-PCH)Carbon Monoxide (CO)

Contaminant Maximum Concentration
Formaldehyde 27 parts per billion (ppb)
Particulates (PM10) 50 micrograms per cubic meter
Total Volatile Organic Compounds (TVOC) 500 micrograms per cubic meter
4-Phenylcyclohexene (4-PCH) 6.5 micrograms per cubic meter
Carbon Monoxide (CO) 9 part per million (ppm) and no greater than 2 ppm above outdoor levels