AIR TOXICS MONITORING DATA EPAs Air Quality System (AQS) Ammonia data available but not in AQS Data for All Substances on Appendix O Total Chromium available not Hexavalent
Relevance to Rulemaking While proposed MAAC is based on human health effects, monitoring data is relevant because: Monitoring data supports need for rulemaking. Monitoring data is real world. Monitoring data is more accepted than modeling.
Charts Region 6 States, KS, CO & MO 2004 Data Different Monitoring & Analytic Methods Available on DEQ Air Quality website NOT Research or Publication Quality
Charts (cont.) Ammonia Arsenic Benzene 1,3-Butadiene Formaldehyde
Ammonia
Arsenic
Benzene
1,3-Butadiene
Formaldehyde
Importance Monitoring essential to SC42 Proposed MAACs are reasonable Some Toxics Regional/National Problem benzene and 1,3-butadiene