[Code of Federal Regulations]
[Title 40, Volume 8]
[Revised as of July 1, 2002] 
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR61.03]

[Page 10-11]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
               CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY
 
PART 61--NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS--Table of Contents
 
                      Subpart A--General Provisions
 
Sec. 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

m2=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

[]=ohm

[mu]g=microgram=10-6gram

    (b) Other units of measure:


  deg.C=degree Celsius (centigrade)

cfm=cubic feet per minute

cc=cubic centimeter

Ci=curie

d=day

  deg.F=degree Fahrenheit

ft \2\=square feet

ft \3\=cubic feet

gal=gallon

in=inch

in Hg=inches of mercury

in H2 O=inches of water

l=liter

lb=pound

lpm=liter per minute

min=minute

ml=milliliter=10-3liter

mrem=millirem=10-3 rem

oz=ounces

[[Page 11]]


pCi=picocurie=10-12 curie

psig=pounds per square inch gage

 deg.R=degree Rankine

[mu]=microliter=10-6liter

v/v=volume per volume

yd \2\=square yards

yr=year

    (c) Chemical nomenclature:


Be=beryllium

Hg=mercury

H2 O=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]