Regulation 6 Revocations Original text. Later amendments are not shown. The Pollution of Waters by Dangerous Substances Regulations (Northern Ireland) 1990f1 and the Pollution of Waters by Dangerous Substances (Amendment) Regulations (Northern Ireland) 1992f2 are hereby revoked. Annotations Footnotes f1 S.R. 1990 No. 38 f2 S.R. 1992 No. 401 ← Regulation 5 Regulation 6 Signature →