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Author: Harold E. Neustadter
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 24
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Book Description
A major objective of air quality monitoring is often to determine compliance with air quality standards, which may in part consist of a 24-hour level not to be exceeded more than once a year. Calculational procedures are critiqued for estimating the corresponding ambient pollution level when a sampling program is operating in conformity with EPA guidelines, that is once every 3 to 6 days. Quantitative consideration is given to the questions of the statistical independence of the data, the commutativity of expectation and exponentiation operations, and the statistical variability of the calculated results. Monte-Carlo simulations indicate a 95-percent confidence interval of + or - 56 percent at 60 samples per year and + or - 40 percent at 120 samples per year. Based on these calculations, sampling frequencies of every third to every sixth day are inadequate for determining conformity with standards expressed as levels not to be exceeded more than once per year.
Author: Harold E. Neustadter
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 24
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Book Description
A major objective of air quality monitoring is often to determine compliance with air quality standards, which may in part consist of a 24-hour level not to be exceeded more than once a year. Calculational procedures are critiqued for estimating the corresponding ambient pollution level when a sampling program is operating in conformity with EPA guidelines, that is once every 3 to 6 days. Quantitative consideration is given to the questions of the statistical independence of the data, the commutativity of expectation and exponentiation operations, and the statistical variability of the calculated results. Monte-Carlo simulations indicate a 95-percent confidence interval of + or - 56 percent at 60 samples per year and + or - 40 percent at 120 samples per year. Based on these calculations, sampling frequencies of every third to every sixth day are inadequate for determining conformity with standards expressed as levels not to be exceeded more than once per year.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 772
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Book Description
Author: Weltgesundheitsorganisation
Publisher: World Health Organization
ISBN: 9240034226
Category : Nature
Languages : en
Pages : 300
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Book Description
The main objective of these updated global guidelines is to offer health-based air quality guideline levels, expressed as long-term or short-term concentrations for six key air pollutants: PM2.5, PM10, ozone, nitrogen dioxide, sulfur dioxide and carbon monoxide. In addition, the guidelines provide interim targets to guide reduction efforts of these pollutants, as well as good practice statements for the management of certain types of PM (i.e., black carbon/elemental carbon, ultrafine particles, particles originating from sand and duststorms). These guidelines are not legally binding standards; however, they provide WHO Member States with an evidence-informed tool, which they can use to inform legislation and policy. Ultimately, the goal of these guidelines is to help reduce levels of air pollutants in order to decrease the enormous health burden resulting from the exposure to air pollution worldwide.
Author: Jessica Lincoln-Oswalt
Publisher:
ISBN: 9781614707240
Category : Air
Languages : en
Pages : 0
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Book Description
The authorities and responsibilities of the Environmental Protection Agency (EPA) derive primarily from a dozen major environmental statutes. This book provides a concise summary of one of those statutes, the Clean Air Act. It provides a brief history of federal involvement in air quality regulation and of the provisions added by legislation in 1970, 1977 and 1990. It also explains major authorities contained in the Act as well as key terms and references for more detailed information on the Act and its implementation.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 992
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Book Description
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1446
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Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Author:
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 222
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Book Description
Author: Dale L. Keyes
Publisher:
ISBN:
Category : Environmental impact analysis
Languages : en
Pages : 160
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Book Description
Author: F. L. Ludwig
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 148
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Book Description
Author:
Publisher: World Health Organization
ISBN:
Category : House & Home
Languages : en
Pages : 488
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Book Description
This book presents WHO guidelines for the protection of public health from risks due to a number of chemicals commonly present in indoor air. The substances considered in this review, i.e. benzene, carbon monoxide, formaldehyde, naphthalene, nitrogen dioxide, polycyclic aromatic hydrocarbons (especially benzo[a]pyrene), radon, trichloroethylene and tetrachloroethylene, have indoor sources, are known in respect of their hazardousness to health and are often found indoors in concentrations of health concern. The guidelines are targeted at public health professionals involved in preventing health risks of environmental exposures, as well as specialists and authorities involved in the design and use of buildings, indoor materials and products. They provide a scientific basis for legally enforceable standards.
