This document describes how sound pressure levels intended as a basis for assessing environmental
noise limits or comparison of scenarios in spatial studies can be determined. Determination can be
done by direct measurement and by extrapolation of measurement results by means of calculation.
This document is primarily intended to be used outdoors but some guidance is given for indoor
measurements as well. It is flexible and to a large extent, the user determines the measurement effort
and, accordingly, the measurement uncertainty, which is determined and reported in each case. Thus,
no limits for allowable maximum uncertainty are set up. Often, the measurement results are combined
with calculations to correct for reference operating or propagation conditions different from those
during the actual measurement. This document can be applied on all kinds of environmental noise
sources, such as road and rail traffic noise, aircraft noise and industrial noise.
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This International Standard specifies the requirements for an environmental management system
that an organization can use to enhance its environmental performance. This International Standard
is intended for use by an organization seeking to manage its environmental responsibilities in a
systematic manner that contributes to the environmental pillar of sustainability.
This International Standard helps an organization achieve the intended outcomes of its environmental
management system, which provide value for the environment, the organization itself and interested
parties. Consistent with the organization’s environmental policy, the intended outcomes of an
environmental management system include:
— enhancement of environmental performance;
— fulfilment of compliance obligations;
— achievement of environmental objectives.
This International Standard is applicable to any organization, regardless of size, type and nature,
and applies to the environmental aspects of its activities, products and services that the organization
determines it can either control or influence considering a life cycle perspective. This International
Standard does not state specific environmental performance criteria.
This International Standard can be used in whole or in part to systematically improve environmental
management. Claims of conformity to this International Standard, however, are not acceptable unless
all its requirements are incorporated into an organization’s environmental management system and
fulfilled without exclusion.
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