SAN DIEGO COUNTY AIR POLLUTION CONTROL DISTRICT

RULE 361.03 - UNITS AND ABBREVIATIONS
(Delegation Effect.: 11-8-76: Rev. Effect.: 1-13-87)

Used in this subpart 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

m3=cubic meter

mg=milligram = 10-3 gram

mm =millimeter = 10-3 meter

Mg=megagram = 106 gram

mol=mole

N=newton

ng=nanogram = 10-9 gram

nm= nanometer = 10-9 meter

Pa=Pascal

s=second

V=volt

W=watt

=ohm

g=microgram = 10-6 gram

(b) Other units of measure:

oC=degree Celsius (centigrade)

cfm=cubic feet per minute

cc=cubic centimeter

d=day

oF=degree Fahrenheit

ft2=square feet

ft3=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 = 10-3 liter

oz=ounces

psig=pounds per square inch gas

oR=degree Rankine

l=microliter = 10-6 liter

v/v=volume per volume

yd2=square yard

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