IPC drafts for acids, halogens, fertilisers and bulk storage

The first drafts of process guidance notes covering acid, halogen and fertiliser processes and the bulk storage of chemicals have been published by HM Inspectorate of Pollution (HMIP).1 The chlor-alkali industry's relief that mercury cell technology will not have to be replaced before the existing deadline of 2010 is counterbalanced by proposed tight new limits for mercury discharges to water.

The processes described in the notes will come under integrated pollution control (IPC) on 1 November 1993, and operators of existing processes will have to apply for authorisation by 31 January 1994. With one or two exceptions, they will then have until 1997 to bring existing plant up to the standards expected of new processes - namely the "best available techniques not entailing excessive cost" (BATNEEC).

Responses to seven of the draft

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