Practicable Standard

TSCA Section 6(h)(4) requires EPA to reduce exposure to the extent practicable—meaning achievable, feasible, workable, and reasonable without full cost-benefit analysis. This explains why some uses are banned (alternatives exist) while others get exclusions (alternatives unavailable).

TSCA § 6(h)(4); EPA Preambles (2021, 2024).

The practicable standard shapes the rule structure. Companies seeking exclusions should demonstrate that alternatives are not technically or commercially feasible for their specific application.

EPA granted a permanent PIP (3:1) exclusion for circuit boards because alternatives are not yet practicable. General-purpose lubricants were banned because alternatives exist.