Requirements V

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Contaminant Maximum Concentration (CMC): -Formaldehyde 27 parts per billion. -Particulates (PM10) 50 micrograms per cubic meter, -Total volatile organic compounds (TVOCs) 500 micrograms per cubic meter, -4-Phenylcyclohexene (4-PCH)* 6.5 micrograms per cubic meter

-Carbon monoxide (CO) 9 ppm and max. 2 ppm above outdoor levels

* Only conduct this test if styrene butadiene rubber (SBR) materials are installed. When CMC limits are exceeded, conduct another flush-out on noncompliant concentrations, using outside air. Repeat until limits are stable.