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STAFF PAPER #16
TRAC 7/13-14/98
DESCRIPTION OF THE CUMULATIVE APPROACH TO TOLERANCE REASSESSMENT

The following lays out the conceptual steps of the cumulative tolerance reassessment process, guided by the preceding principles. Thus, for example, stakeholder consultations and peer review could be built in throughout the process described here.

A cumulative approach would consider initially all of the OP tolerances together rather than first considering the tolerances associated with each individual OP.

-- The first step would be to identify those food uses which pose the greatest risk. Criteria for priority action would be applied to target these high risk uses. Criteria could also target high worker and ecological risk uses.

-- Crtieria could also be used to identify uses which pose little or no risk concern.

A cumulative risk assessment would be conducted (such assessment could initially be done for food only or include food, residential and drinking water). This assessment would be shared with interested parties.

Following comments on the cumulative risk assessment, decision-making criteria would be applied to allow the Agency to choose among competing OP chemical/use combinations to fill the cumulative risk cup.

Dietary risks would be managed to acceptable levels through appropriate regulatory action and transition periods.


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updated July 10, 1998