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Targets are the food chain individual and the population. Both are assessed for Level I, Level II, and potential. Note the parallel treatment in other pathways and threats (HRS rule, Table 4-1, page 51608).

  • Population is assessed by converting the pounds of fish production for each fishery into people-equivalents, based on generic assumptions about fish consumption.

The surface water in-water segment must be divided into fisheries.

  • Break the in-water segment into fisheries that are exposed to Level I, Level II, and potential contamination.

  • Further segment fisheries exposed to potential contamination by surface water body types (dilution ranges from HRS Table 4-13, page 51613).

  • Further segment fisheries where the species harvested change or where there is a major change in production (poundage) per acre. These changes are particularly likely when you move from one surface water category (river, lake, etc., from HRS Section 4.0.1, page 51605) to another or move from shallow to deeper water.

  • Note that there may be two or more fisheries within the same zone of contamination or within the same dilution regime.

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