Tag: PM2.5 (Particulate Matter)

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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Area Designations:
PM2.5 State Implementation Plan Development

Nonattainment designation is determined by the EPA when an area or areas within a state persistently exceed the National Ambient Air Quality Standards. The EPA has designated "nonattainment areas" for Particulate Matter having an aerodynamic diameter of 2.5 microns (μm) or less (PM2.5). The three EPA designated areas include: Provo, Utah Logan, Utah and Franklin …

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Public Comment:
PM2.5 State Implementation Plan Development

Public comments are a critical part of the decision making process. The Department of Environmental Quality and its divisions and boards are committed to using the public notice and comment process to improve the decisions they make. The most effective comments: Request actions the agency has legal authority to make. Provide new information the agency …

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