40 CFR 61.03 - Units and abbreviations.

§ 61.03 Units and abbreviations.

Used in this part are abbreviations and symbols of units of measure. These are defined as follows:

(a) System International (SI) units of measure:

A = ampere
g = gram
Hz = hertz
J = joule
K = degree Kelvin
kg = kilogram
m = meter
m 2 = square meter
m 3 = cubic meter
mg = milligram = 10−3gram
mm = millimeter = 10−3meter
Mg = megagram = 10 6gram
mol = mole
N = newton
ng = nanogram = 10−9gram
nm = nanometer = 10−9meter
Pa = pascal
s = second
V = volt
W = watt
Ω = ohm
µg = microgram = 10−6gram

(b) Other units of measure:

°C = degree Celsius (centigrade)
cfm = cubic feet per minute
cc = cubic centimeter
Ci = curie
d = day
°F = degree Fahrenheit
ft 2 = square feet
ft 3 = cubic feet
gal = gallon
in = inch
in Hg = inches of mercury
in H2O = inches of water
l = liter
lb = pound
lpm = liter per minute
min = minute
ml = milliliter = 10−3liter
mrem = millirem = 10−3 rem
oz = ounces
pCi = picocurie = 10−12 curie
psig = pounds per square inch gage
°R = degree Rankine
µl = microliter = 10−6liter
v/v = volume per volume
yd 2 = square yards
yr = year

(c) Chemical nomenclature:

Be = beryllium
Hg = mercury
H2O = water

(d) Miscellaneous:

act = actual
avg = average
I.D. = inside diameter
M = molar
N = normal
O.D. = outside diameter
% = percent
std = standard
[ 42 FR 51574, Sept. 29, 1977, as amended at 54 FR 51704, Dec. 15, 1989]

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

It is not guaranteed to be accurate or up-to-date, though we do refresh the database weekly. More limitations on accuracy are described at the GPO site.


United States Code
U.S. Code: Title 42 - THE PUBLIC HEALTH AND WELFARE

Title 40 published on 2015-08-22

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR Part 61 after this date.

  • 2017-01-26; vol. 82 # 16 - Thursday, January 26, 2017
    1. 82 FR 8499 - Delay of Effective Date for 30 Final Regulations Published by the Environmental Protection Agency Between October 28, 2016 and January 17, 2017
      GPO FDSys XML | Text
      ENVIRONMENTAL PROTECTION AGENCY
      Final rule; delay of effective dates.
      This regulation is effective January 26, 2017. The effective date of each regulation listed in the table below is delayed to a new effective date of March 21, 2017.
      40 CFR Parts 22, 51, 52, 61, 68, 80, 81, 124, 147, 171, 239, 259, 300, and 770