Contaminant

Maximum Allowed Concentration

Sampling /
Analytical Method

Media

Flow Rate
(Over 4 Hours)

Total Volume

Lab MRL

Preserve /
Hold Time

Formaldehyde

50 ppbV
(Version 2.2)

27 ppbV
(Version 3.0-2009)

EPA
TO-11A
DNPH Silica
Gel tube
200
mL/min
48L 1.7ppbV Keep tubes cold (freezer) before use. Ship samples cold (4°C) overnight to lab/14 days until extraction
Particulates (PM10) 50
µg/m3
handheld
meter

NA

NA

NA

NA

NA

Total Volatile Organic Compounds (TVOC) * 500
µg/m3
EPA
TO-17
Thermal Desorption tube 50
mL/min
12L 50-100 µg/m3 Tubes may be stored at room temperature before use. Ship samples cold (4°C) overnight to lab/28 days until analysis
4-Phenylcyclohexene
(4-PCH) **
6.5
µg/m3
EPA
TO-17
Thermal
Desporption tube
50
mL/min
12L 0.83 µg/m3 Tubes may be stored at room temperature before use. Ship samples cold (4°C) overnight to lab/28 days until analysis
Carbon Monoxide (CO) 9 ppmV and
no greater than
2 ppmV above
outdoor levels
handheld
meter

NA

NA

NA

NA

NA

* Other sampling/analytical methods are available for TVOC. Please call the laboratory to discuss benefits and drawbacks of the various available methods.

** This test is only required if carpets and fabrics with styrene butadiene rubber (SBR) latex backing material are installed as part of the building systems.

Please contact us to discuss implementing LEED standards in your construction or renovation project or performing an assessment to demonstrate compliance.