TagEPA(85)

This 2009 report summarizes air quality monitoring studies conducted near Seattle-Tacoma International Airport between 1996 and 2002, following concerns raised during the airport's expansion planning. Measurements of carbon monoxide, nitrogen dioxide, particulate matter, and air toxics were taken at multiple sites around the airport, and none of the pollutants exceeded federal air quality standards. While some elevated levels of metals like chromium were detected at the Sea-Tac monitoring site, overall cancer risk from air toxics was lower than the regional average for the Seattle area.

In this 2007 U.S. Supreme Court case, Massachusetts and other states sued the Environmental Protection Agency (EPA) for refusing to regulate greenhouse gas emissions from motor vehicles under the Clean Air Act. The Court ruled that the EPA had the authority and responsibility to regulate such emissions, and that states like Massachusetts had legal standing to challenge the EPA's inaction due to real harms caused by rising sea levels and climate change. This case established that carbon dioxide and other greenhouse gases can be regulated as air pollutants under federal law.

USGS report (Exhibit AR034767) on pesticides detected in urban stream water during rainstorms in King County, Washington, in collaboration with Washington State Department of Ecology and King County. Twenty-three of 98 pesticides sampled were detected across 12 study sites in 10 urban watersheds; concentrations of five insecticides (carbaryl, chlorpyrifos, Diazinon, gamma-HCH/Lindane, Malathion) exceeded NAS/NAE recommended

Letter and memorandum from EPA Assistant Administrator Robert Perciasepe transmitting the final Interim Permitting Approach for Water Quality-Based Effluent Limitations in Storm Water Permits to State Water Program Directors and EPA Water Management Division Directors. The policy addresses NPDES storm water permit effluent limitations, adopting best management practices (BMPs) in lieu of numeric water quality-based

EPA Integrated Risk Information System (IRIS) QuickView pages for Antimony (CASRN 7440-36-0) and Arsenic, inorganic (CASRN 7440-38-2), accessed February 14, 2002. Antimony oral RfD is 4×10-4 mg/kg-day based on LOAEL of 0.35 mg/kg-day from Schroeder et al. 1970 rat chronic oral bioassay; confidence rated Low. Arsenic oral RfD is 3×10-4 mg/kg-day based on NOAEL of

This EPA fact sheet explains that aircraft contrails are line-shaped clouds made of ice crystals formed when water vapor in jet engine exhaust mixes with cold air at high altitudes. Contrails are composed primarily of water and do not pose direct health risks, but persistent contrails can spread into cirrus cloud cover and may influence the Earth's climate by affecting atmospheric cloudiness. Scientists estimate that persistent contrails cover about 0.1 percent of the Earth's surface on average, with the highest concentrations occurring over heavily trafficked air corridors like Europe and the United States.

This EPA document explains how poor indoor air quality (IAQ) in schools can harm students' health and academic performance, causing absences due to respiratory illnesses and reducing the ability to concentrate, calculate, and remember. Studies show that high pollution levels, inadequate ventilation, and improper temperature and humidity control contribute to these problems. The EPA recommends schools use the IAQ Tools for Schools Kit to identify and address indoor air quality issues at little or no cost.

Report prepared by Kevin V. Brix and David K. DeForest of Parametrix, Inc. for the International Lead Zinc Research Organization, International Copper Association, and Nickel Producers Environmental Research Association (NiPERA), April 2000. Reviews bioconcentration factors (BCFs) for metals including cadmium, copper, lead, nickel, silver, and zinc in aquatic organisms (fish, bivalves, invertebrates, algae, diatoms). Covers

This March 2000 report, prepared by Washington State health and environmental agencies, examines whether jet engine exhaust emissions from Seattle-Tacoma International Airport can be monitored or modeled using wind and takeoff data. It reviews previous air quality studies, outlines health and environmental justice concerns for nearby communities, and recommends a structured air quality monitoring study with specific methods, data analysis approaches, and estimated costs. The report was developed in consultation with community representatives, the EPA, and local universities.

EPA report (EPA 821-R-00-001, January 2000) presenting a preliminary data summary of airport deicing operations. Covers aircraft and pavement deicing/anti-icing fluids including ethylene glycol-based compounds, fluid types, fluid application methods, variables affecting fluid use, nonchemical deicing methods, and NPDES/Clean Water Act wastewater concerns. Data collected via 1993 screener questionnaire, airport/vendor/POTW mini-questionnaires, EPA site visits, EPA