The abbreviations used in this part represent the following terms:
lb = pound (or pounds)
g = gram
µg/l = micrograms per liter (1 one-millionth gram/liter)
kg = kilogram(s)
kkg = 1000 kilogram(s)
authority: Secs. 307, 308, 501, Federal Water Pollution Control Act Amendments of 1972 (Pub. L. 92-500, 86 Stat. 816, (
33 U.S.C. 1251
source: 42 FR 2613, Jan. 12, 1977, unless otherwise noted.
cite as: 40 CFR 129.3