§ Mr. SpellerTo ask the Secretary of State for the Environment (1) what is the maximum level of decibel noise laid down as reasonable for a B1 and B2 classification of an industrial site.
(2) what categories of industrial site are required to operate at a decibel level not exceeding 30 decibels.
§ Mr. Yeo[holding answer 23 April 1991]: Industrial sites are not categorised by reference to decibel levels in planning, pollution control, or environmental protection legislation. Planning conditions may impose particular noise limits in individual cases.