Ill. Admin. Code tit. 35, § 302.666 - Utilizing the Bioconcentration Factor

Current through Vol. 46, No. 16, April 15, 2022

The Bioconcentration Factor derived in Section 302.663 is used to calculate water quality criteria for a substance as specified below:

a) When calculating a WDAPC as described in Section 302.633, the geometric mean of all available steady-state whole body Bioconcentration Factor for fish and shellfish species which constitutes or represents a portion of the diet of indigenous wild and domestic animal species is used. Additional considerations in deriving a Bioconcentration Factor include:
1) An edible portion Bioconcentration Factor is converted to a whole body Bioconcentration Factor for a fish or shellfish species by multiplying the edible portion Bioconcentration Factor by the ratio of the percent lipid in the whole body to the percent lipid in the edible portion of the same species.
2) A Bioconcentration Factor calculated as described in Section 302.663(c) is converted to a whole body Bioconcentration Factor by multiplying the calculated Bioconcentration Factor by the ratio of the percent lipid in the whole body to 7.6.
b) When calculating either a human threshold criterion or a human nonthreshold criterion as described in Sections 302.642 through 302.648 and Sections 302.651 through 302.657, respectively, the geometric mean of all available edible portion Bioconcentration Factors for fish and shellfish species consumed by humans is used. Additional considerations in deriving a Bioconcentration Factor include:
1) Edible portions include:
A) Decapods - muscle tissue.
B) Bivalve molluscs - total living tissue.
C) Scaled fishes - boneless, scaleless filets including skin except for bloater chubs in which the edible portion is the whole body excluding head, scales and visera.
D) Smooth-skinned fishes - boneless, skinless filets.
2) A whole body Bioconcentration Factor is converted to an edible portion Bioconcentration Factor by multiplying the whole body Bioconcentration Factor of a species by the ratio of the percent lipid in the edible portion to the percent lipid in the whole body of the same species.
3) A Bioconcentration Factor calculated as described in Section 302.663 is covered to an edible portion Bioconcentration Factor by multiplying the calculated Bioconcentration Factor by the ratio of the percent lipid in the edible portion to 7.6.

Notes

Ill. Admin. Code tit. 35, § 302.666

Added at 14 Ill. Reg. 2899, effective February 13, 1990

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