Determing Which Hazardous Chemicals (HCs) Exceed Thresholds
The following section (Steps 3 - 12) involve using the Optional Aggregation Worksheet A(s) to aggregate quantities of EHSs contained in each mixture and location at the facility. The worksheet is a useful tool but is not a regulatory requirement. You do not need to use copies of the Optional Aggregation Worksheet A if the facility has an adequate system (such as a computerized inventory) which can accomplish the same goals.
Begin one Optional Aggregation Worksheet A, for each EHS marked on the Optional Comprehensive Inventory Worksheets, except for those EHSs which are only contained in exempt products. Begin each Aggregation Worksheet A by completing Section 1.
Look up and record the Threshold Planning Quantity (TPQ) and the Reportable Quantity (RQ) on lines D and E of the Aggregation Worksheet A for each EHS.
