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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.
Table 3 - Method and Matrix for Deriving Receptor Tolerability for MATTE
(based on unmitigated consequence)
1 Identify scenario and receptor affected.
2 Select Harm Severity Level (Table 1)
3 Select Duration / Recovery Category (Table 2)
4 Apply to Tolerability Assessment Matrix to determine tolerability boundaries.
Severity of Harm
4
C
D
D
3
B
C
D
2
A
B
C
1
Sub-MATTE Harm
1
2
3
4
Harm Duration Category
Frequency at
which the
Frequency per receptor per
establishment per year
CDOIF
consequence
level is reached
or exceeded
Intolerable
(greater than)
Broadly Acceptable
(less than)
A
1.0 E-02
1.0 E-04
B
1.0 E-03
1.0 E-05
C
1.0 E-04
1.0 E-06
D
1.0 E-05
1.0 E-07
Guideline – Environmental Risk Tolerability for COMAH Establishments v1.0
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