Category: Pollutants

PFAS Workgroup

The Department of Environmental Quality (DEQ) formed a workgroup in spring 2019 to evaluate the potential for environmental contamination in Utah from Per- and Polyfluoroakyl Substances (PFAS). PFAS are used in many consumer products and industrial processes to repel oil, water and grease, reduce friction, and resist temperature extremes. These compounds do not break down …

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Health Effects of PFAS

Concerns about the potential public health hazards of human exposure to per- and polyfluoroalkyl substances (PFAS) continue to increase as scientists learn more about these chemicals. The large number of PFAS compounds–over 4,000–present considerable challenges. The available toxicity and epidemiology data are currently limited to the evaluation of only a few chemicals. Different PFAS compounds …

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Human Exposure to PFAS

People can be exposed to PFAS from a variety of different sources. Most people are exposed to PFAS from drinking water and eating food that contains these chemicals. Drinking water can be a source of exposure in communities where these chemicals have contaminated water supplies. Such contamination is typically localized and associated with a specific …

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Sources of PFAS

PFAS are present in many consumer products. The number and variety of PFAS sources present considerable challenges for cleanup efforts and prevention measures. The major sources of PFAS contamination in drinking water, groundwater, soils, and air include: Fire training/fire response sites Industrial sites Landfills Wastewater treatment plants and resulting biosolids Fire training/fire response sites Aqueous …

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PFAS Basics

Per- and polyfluoroalkyl substances (PFAS) are a large group of synthetic chemicals used in a variety of everyday materials, including nonstick cookware, carpet, textiles, high-performance outdoor gear, coated paper and cardboard products, some firefighting foams, and a variety of cleaning products, paints, varnishes, and sealants. These compounds repel oil, water, grease, and stains, resist temperature …

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Per- and Polyfluoroakyl Substances (PFAS)

Per- and polyfluoroalkyl substances (PFAS) are a large group of man-made chemicals used in a variety of everyday materials. PFAS compounds repel oil, water, grease, and stains, resist temperature extremes, and reduce friction.PFAS can be found in air, water, and soil. They are very stable and can stay in people’s bodies and the environment for …

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Air Pollutants

The Clean Air Act identifies six common air pollutants that are found all over the United States and can injure health, harm the environment or cause property damage. These pollutants include: Carbon Monoxide Lead Nitrogen Dioxide Ozone Particulate Matter (PM10) and (PM2.5) Sulfur Dioxide The United States Environmental Protection Agency (EPA) has established National Ambient …

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2011 State Implementation Plan: Regional Haze

Utah Technical Support Documentation Supplement: 2011 Utah’s Regional Haze SIP is the product of twenty years of work, beginning with the Grand Canyon Visibility Transport Commission in 1991.The SIP was developed through a consensus-based regional stakeholder process that led the nation in protecting the vistas of western Class I areas, including the five national parks …

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Petroleum

Black and Yellow Wax Black and yellow waxes are thick crude oils with a higher paraffinic content than most crude oils found in North America. These waxy crudes are viscous and have a high pour point, which means they become semi-solid at lower temperatures. The process for refining waxy crudes presents some challenges. Although black …

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Particulate Matter Overview

Serious Area PM2.5 State Implementation Plan (SIP) Development PM2.5 PM10 Current Air Quality Interactive Products Interactive Data Explorer Interactive PM Trend Chart Utah Clean Air Partnership (UCAIR) Particulate matter (PM), also known as particle pollution, is a complex mixture of small solid particles and liquid droplets in the air. Some particulate matter, like soot, smoke, …

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Inversions

Under normal atmospheric conditions, air is warmer near the ground and colder at higher altitudes. In a temperature inversion, the situation “inverts,” and cold air at the surface gets trapped under a layer of warmer air. During the winter, snow-covered valley floors reflect rather absorb heat, preventing the normal vertical mixing of warm and cold …

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Particulate Matter 2.5 (PM2.5) Overview

PM2.5 particulates are fine, inhalable particles or droplets with a diameter of 2.5 microns or smaller. These fine particulates, which are about 30 times smaller than the width of a human hair, can travel deeply into the lungs and cause both short-term and long-term health effects. While larger PM10 particulates can compromise respiratory and cardiac …

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PM2.5 Moderate Area State Implementation Plans (SIPs) (2009-2014)

Jump to: Background Nonattainment State Implementation Process Area Designations and SIP Call Moderate SIP Goals and Deadlines Stakeholder Process Subpart 1 Moderate Area SIPs Subpart 1 SIP Control Measures Court Decision Subpart 4 Moderate Area SIPs Logan PM2.5 SIP Salt Lake PM2.5 SIP Provo PM2.5 SIP Emission Limits and Operating Practices for Large Stationary Sources …

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