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Bubble Concept: Air Quality Available

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1. Explain the bubble concept as applied to air quality permitting. What is “cap and trade” and how does this differ from the bubble concept? The bubble concept allows for the enforcement of emission standards that cover a facility or facilities under a single umbrella instead of enforcing each one separately. (Robinson, 1991, p.173) The bubble concept allows a facility or facilities to increase one emission standard and decrease another as long as the overall net amount of standards being created does not exceed the set limit. (EPA's Widening Embrace of the "Bubble" Concept: The Legality and Availability of Intra-Source Trade-Offs, 1979) The cap and trade sets a maximum amount of pollutions allowed from a facility. All major sources of pollution fall under the cap and trade rule. A facility will be distributed permits that have a certain number of allowances, one allowance allows a facility to release a ton of carbon …show more content…
What are mobile and stationary sources? Compare and contrast the regulatory requirements for stationary sources and mobile sources of air pollution. Mobile sources are anything that is not affixed to a set location and can be moved from one location to another and are considered nonpoint. Examples of mobile sources include planes, buses, construction equipment, recreational vehicles, boats, generators, or vehicles. To sum it up, if it has an engine that creates emissions and can move it falls under mobile sources. Stationary sources are factories, electrical plants, or chemical plants that emit emissions. Stationary sources cannot be moved from location to location and are considered point sources. (Air Enforcement) Every type of source has some type of emissions control set under the Clean Air Act. Stationary sources are required to install equipment that helps control pollution and meet emissions limit. All mobile sources must be certified and pass an emissions inspections. This requirement falls to all sources created nationally or

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