BOD

biological oxygen demand

CEPA

Canadian Environmental Protection Act

CEPA 1999

Canadian Environmental Protection Act, 1999

COD

chemical oxygen demand

CTV

Critical Toxicity Value

EC₅₀

median effective concentration

EEV

Estimated Exposure Value

EEV_TEQ

Estimated Toxic Exposure Value based on nonylphenol toxic equivalency quotients

ENEV

Estimated No-Effects Value

IC₂₅

inhibiting concentration estimated to cause a 25% effect

LC₅₀

median lethal concentration

LOEC

Lowest-Observed-Effect Concentration

MUC

Montreal Urban Community

MWWTP

municipal wastewater treatment plant

NOEC

No-Observed-Effect Concentration

NP

nonylphenol

NPE

nonylphenol ethoxylate or polyethoxylate (as a general class)

NPnEO

nonylphenol ethoxylate; where n = specific number of ethoxylate groups

PSL

Priority Substances List

SS

suspended solids

TEQ

toxic equivalency quotient

TL₅₀

time to 50% mortality (lethality)

TME

textile mill effluent

TU

toxic unit

YES

yeast estrogen screen