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CDOIF
Chemical and Downstream Oil
Industries Forum
CDOIF is a collaborative venture formed to agree strategic areas for
joint industry / trade union / regulator action aimed at delivering
health, safety and environmental improvements with cross-sector
benefits.
Note (criteria a): In DETR guidance, the minimum length of watercourse for MATTE is
stated as 10km or 10% of the length (whichever is lesser). In practice, for a large
number of watercourses the 10% threshold will dominate, and for many a very short
distance would be derived. To avoid very short distances (<2 km, where a watercourse
is <20km), CDOIF have agreed the minimum length of watercourse where serious harm
could occur is taken here as a fixed value of 2km. This aligns to the EA Common Incident
Classification System (CICS) category 1.
Note (criteria d): interruption of public or private drinking supplies is included here to take
account of where abstraction points exist in rivers, reservoirs and lakes. Risk thresholds
based on potential severity and duration are the same as for interruption of groundwater
drinking water supplies (Refer to Appendix 4, MATTE Tolerability Tables, Table 1 row 7).
Guideline – Environmental Risk Tolerability for COMAH Establishments v1.0
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