40 CFR Appendix B to Part 118: Appendix B to Part 118—Toxicity Endpoints for Calculating Planning Distance for Fish, Wildlife and Sensitive Environments and Public Receptors

Category RQ (lbs.) Endpoints for public receptors LD50 Endpoints for fish, wildlife and sensitive environments using 96-hour LC50

Mammalian toxicity (oral) (mg/kg) 10% (mg/kg) Aquatic toxicity (mg/liter) 10% (mg/L)

Lower Upper Lower Upper

X 1 0 0.1 0.01 0 0.1 0.01

A 10 0.1 1 0.1 0.1 1 0.1

B 100 1 10 1 1 10 1

C 1,000 10 100 10 10 100 10

D 5,000 100 500 50 100 500 50