Air Quality

Research has verified over many years that proper ventilation and high-quality air supplied to occupied spaces improves the performance of buildings and the occupants. These high- performance spaces improve the productivity of the occupant and thus the organization and building profitability.

During recent years, several international programs have been developed including ASHRAE Standards, and LEED®, WELL Building and FITWELL programs that define air quality programs including ventilation levels and filtration requirements. These programs require on-site testing of contaminants along with ventilation levels and environmental conditions.

Facility Performance Associates specializes in providing the program knowledge, system design facilitation, testing experience, and calibrated testing equipment to maximize the occupancy conditions and thus the occupant’s performance and well as meet IAQ program requirements. The testing for the LEED® program includes the following:

LEED®, Indoor Air Quality Base Level Testing 

The purpose of this service is to meet the indoor air quality testing requirements of base level testing for a new building finish out.

– Scope requirements

To determine the base level air quality in the buildings at the time of occupancy, a series of tests shall be conducted on the specified chemical and other listed airborne contaminants. This testing is intended to comply with the requirements of the project specifications and LEED ® Environmental Quality Credit Construction IAQ – After Construction/ Before Occupancy baseline IAQ procedure. Two LEED ® points are available in LEED ® V4.1; one for Path 1 instrument-based testing, and an additional point for Path 2 lab-based testing analysis. 

Note: The cost for Path One testing can be separated from the proposed cost if only one point is required.


Conduct baseline IAQ testing using testing protocols consistent with requirements and details in the LEED ® Reference Guide for Green Building Interior Design and Construction, V4.1 Edition.

– Test Sets Path 1 – Particulate Matter and Inorganic Gases – 1 LEED Point

Ambient Condition/ Contaminant Method – Target or Allowable Levels
Temperature Electronic Temp. Sensor 73 +/- 3 Deg. -target
Humidity Electronic RH Sensor 30-60 % – target
Carbon Dioxide Electronic CO2 Sensor <900 ppm – target
Carbon Monoxide Electronic CO Sensor <9 ppm
Ozone Electronic O3 Sensor <.070 ppm
Total Particulates- PM 2.5 Particle Counter < 12 PM10 µg/m3
Total Particulates- PM 10 Particle Counter < 50 PM10 µg/m3

Test Sets Path 2 – Volatile Organic Compounds – 1 LEED Added Point    

Ambient Condition/ Contaminant Method – Target or Allowable Levels
Formaldehyde Passive sampler < 20 µg/m3
Acetaldehyde Passive sampler <120 µg/m3
Total Volatile Organic Compounds PID Electronic Sensor

and Sorbent Tube with

Laboratory Analysis

TVOC < 500 µg/m3
Target Ten VOC Chemicals in LEED

V4.1 instruction

Sorbent Tube with

Laboratory Analysis

< Table 2 Listing on LEED

V4.1 IAQ Assessment Point

– Test Locations

The number of sampling locations depends on the size of the building and the number of ventilation areas.  For each portion of the building the number of sampling points (or test sets) must not be less than 1 per 25,000 square feet or for each contiguous floor area.  

– Procedure

The samples will be collected by qualified technicians according to NIIOSH standard procedures for analysis and report.  Air samples must be collected between 3 and 6 feet from the floor to represent the breathing zone of occupants. Sample locations are required to be chosen by the testing technician at random.  All interior finishes must be installed, including but not limited to millwork, doors, paint, carpet, and acoustic tiles. Movable furnishings such as workstations and partitions must be in place for the testing in the LEED® Commercial Interiors Rating System.

– Analysis

The test results will be analyzed by a NREP certified Indoor Air Quality Manager and

Path 2 by an ISO 17025 certified laboratory.

– Reports

A comprehensive report shall be provided detailing the testing procedures, results and laboratory reports. Facility Performance Associates (FPA) meets the required qualifications and have all the necessary equipment. If FPA is invited to the LEED documentation access, FPA will complete all documentation for LEED Online EQ credit.

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