Tagpollution(94)

This document presents chemical composition data for various petroleum fuel types, including fresh gasoline, weathered gasoline, fresh diesel, weathered diesel, and heavy fuel oil. It breaks down the percentage and concentration (mg/kg) of aliphatic and aromatic hydrocarbon fractions across different carbon chain length ranges. The data appears to support environmental modeling and site assessment work, likely related to fuel spill or contamination analysis.

This document debunks common myths about airport air pollution, noise, and emissions regulation, explaining that invisible pollutants can still reach dangerous levels, that fine particles from jet engines bypass the body's natural defenses, and that shoreline communities like those near Sea-Tac may face higher pollution concentrations due to wind patterns. It also reveals that neither the EPA nor FAA effectively regulates aircraft emissions or noise in ways that truly protect nearby residents, as regulatory authority rests with bodies like ICAO that are dominated by airline and airport interests. Additionally, the document highlights that official pollution modeling tools may significantly underestimate actual pollution levels, and that so-called 'noise abatement' programs often fail to reduce noise at all.

This 2002 draft document presents 1996 modeled air exposure concentration estimates for toxic pollutants including lead, manganese, and arsenic across all U.S. states. It compares statewide source contributions from major industrial areas, onroad vehicles, nonroad sources, and background levels. Supplementary 2001 monitoring data from Sea-Tac Airport and nearby Seattle sites shows measured concentrations of these pollutants, with some local readings—such as a single manganese measurement exceeding 36 ng/m³ and an arsenic reading surpassing 12 ng/m³—notably higher than regional averages.

This document records a 2002 Washington State Pollution Control Hearings Board case in which community groups challenged the water quality certification issued for the construction of a third runway at Seattle-Tacoma International Airport. The Airport Communities Coalition and Citizens Against Airport Expansion argued that the Department of Ecology's approval did not provide adequate assurance that the project would comply with Clean Water Act Section 401 and state water quality laws, particularly regarding stormwater management. The Board examined 20 disputed issues covering topics such as stormwater impacts, detention system safety, and the scope of the certification.

This 1998/1999 study by the Washington State Department of Ecology monitored levels of oxides of nitrogen and particulate matter in the SeaTac area, likely in relation to emissions from Seattle-Tacoma International Airport and surrounding traffic. Prepared by Jim Frost and Doug Knowlton of Ecology's Air Program, the report assessed local air quality conditions during that period. It serves as a technical reference for understanding pollution levels near the airport in the late 1990s.

A 1999 University of Washington study measured nitrogen dioxide (NO2) levels around Seattle-Tacoma International Airport to determine whether aircraft operations were harming local air quality. Researchers found that NO2 levels at all monitoring sites remained well below federal safety standards, and that regional conditions and nearby freeways — not aircraft — were the primary drivers of local pollution. The study concluded that airport operations had only a small, difficult-to-isolate effect on community NO2 levels, estimated at less than 7 parts per billion above background levels.

A 1996 Natural Resources Defense Council report estimates that approximately 64,000 premature deaths from cardiopulmonary causes occur each year due to particulate air pollution (PM-10) across 239 American cities. The report ranks metropolitan areas by PM-10 concentration, attributable mortality, and mortality rate, with California cities like Visalia, Bakersfield, and Fresno topping the pollution charts. Note: this document addresses urban air quality and public health broadly and does not contain content specifically related to Sea-Tac Airport noise policy.

This January 1995 report, prepared by McCulley, Frick & Gilman, Inc. for the Port of Seattle's Aviation Planning Department, presents the results of an air quality survey conducted at Seattle-Tacoma International Airport. The study measured volatile organic compounds, carbon monoxide, and formaldehyde at multiple locations around the airport during late 1993, comparing upwind and downwind air samples to assess the airport's impact on local air quality. Findings were evaluated against Washington State Department of Ecology standards and compared with air quality data from other urban areas.

This document contains detailed chemical and environmental property data for Aroclor 1254, a polychlorinated biphenyl (PCB) mixture, including its molecular weight, water solubility, vapor pressure, and environmental fate characteristics. It covers sorption coefficients, half-lives in various environmental compartments (water, soil, sediment, biota), and bioconcentration factors in fish and other organisms. The data is compiled from numerous scientific studies published between the 1970s and late 1980s.