NYC 9/11 Public Portal Document
6. EPA - HEH (noncarcinogen) > Hazard Quotient (HQ) = 10
7. National Ambient Air Quality Standard (NAAQS)
- Lead is a 3 month average
- I’M2 5 is a 24 hour average
- Sulfur Dioxide is a 24 hour average primary standard
8. Air Quality Index (AQI)
9. Non cancer effects based on CAL-EPA toxicity studies
10. American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit
Value (TLV)
11. Agency for Toxic Substances and Disease Registry (ATSDR) Inhalation minimum risk level
(MRL) X 10
12. ATSDR acute MRL
13. Lower Explosive Limit (2-11 %)
14. National Institute of Occupational Safety and Health (NIOSH)
15. Proposed Reference Concentration (RfC) - HEH (noncancer) > Hazard Quotient (HQ) = 10
16. Based on Benzo(a)pyrene toxicity equivalency factor toxicity equivalency factor (TEF)
17. EPA National Center for Environmental Assessment (NCEA) provisional inhalation Slope
Factor (3.1 E 00 mg/kg/day ')
DRAl-T-DO NOT QUOTE OR C/TE A-6 October 2002
CITY_21MC100_011109164
NYC-WTC_000186137
OCR can misread numbers and units. Confirm readings against the page image before using them.