EPA Document Collection

About the EPA document collection held by the Noise Pollution Clearinghouse.

Subject Index: A B C E G H I L M O P R S T U W
Title Index: A B C D E F G H I J L M N O P Q R S T U W

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Most useful EPA documents

Title Index

Regulation of Noise in Urban Areas
August 1, 1971

Noise legislation trends and observations; some fundamentals of sound and acoustic terminology; criterea for rating sounds; the character of urban noise.

Regulatory Analysis Appendices for the Noise Emission Regulations for Motorcycles and Motorcycle Exhaust Systems
December 1, 1980

This document includes detail information that supplements section 1 through 8 of the regulatory analysis. In addition it includes an analysis of State, local, and foreign motorcycle noise regulations and a summary of the motorcycle national emphasis plan.

Regulatory Analysis for the Noise Emission Regulations for Motorcycles and Motorcycle Exhaust Systems
December 1, 1980

This document presents the technical data and analyses used by EPA in developing the noise emission regulations fro motorcycles and motorcycle exhaust systems. The information presented includes a detailed discussion of: the motorcycle and motorcycle exhaust systems industry; baseline noise levels for current motorcycles; the noise control technology available; the adverse health and welfare impacts of motorcycle noise and the potential benefits of regulation; the expected costs and potential economic effects of regulation; and the noise measurement methodology.

Relation Between Daily Noise Exposure and Hearing Loss Based on the Evaluation of 6,835 Industrial Noise Exposure Cases
June 1, 1973

The present study is designed to display the percent of a population exhibiting greater certain specified audiometric hearing levels as a function of specified exposure levels and duration of exposures to those levels. Audiometric data from 6,835 employees of an industrial plant were taken during the period from 1960 through 1965. The employees were selected only on the criterion that their noise exposures were reasonably well known. Hearing levels for each of three exposure conditions (78, 86 and 92 dBA) were obtained for the speech (0.5, 1, and 2 kHz) and the 4 kHz audiometric frequencies. The data are smoothed and hearing risk tables are presented.

The Relationship Between Annoyance and Detectability of Low Level Sounds
September 1, 1978

The relationship between the predicted detectability and judged annoyance of 25 low level sounds heard in three noise backgrounds was investigated by an adaptive paired comparison procedure under free field listening conditions. The predicted detectability of the set of sounds accounted for almost 90% of the variance in the annoyance judgments in a conventional (falling spectrum) background noise environment. This strong relationship between predicted detectability and annoyance appears capable of supporting objective scales of the intrusiveness of low level sounds heard under everyday circumstances.