Section 400.03. Units and abbreviations.

  Abbreviations and symbols of units of measure used in chs. NR 400 to 499 are defined as follows:

(1)  System international (SI) units of measure:

(a) "A" — ampere

(am) "g" — gram

(b) "Hz" — hertz

(bm) "J" — joule

(c) "K" — degree Kelvin

(cm) "kg" — kilogram

(d) "kPa" — kilo pascal (1.0 kPa = 0.15 psia)

(dm) "m" — meter

(e) "m 2" — square meter

(em) "m 3" — cubic meter

(f) "mg" — milligram—10 -3 gram

(fm) "Mg" — megagram—10 6 gram

(g) "mm" — millimeter—10 -3 meter

(gm) "mol" — mole

(h) "MW" — megawatt

(hm) "MWe" — megawatt electrical

(i) "N" — newton

(im) "ng" — nanogram—10 -9 gram

(j) "nm" — nanometer—10 -9 meter

(jm) "Pa" — pascal

(k) "s" — second

(km) "V" — volt

(L) "W" — watt

(Lm) " m g" — microgram—10 -6 gram

(m) " W " — ohm

(2)  Other units of measure:

(a) "Btu" — British thermal unit

(am) " ° C" — degree Celsius (centigrade)

(b) "cc" — cubic centimeters

(bm) "cfm" — cubic feet per minute

(c) "Ci" — curie

(cm) "d" — day

(d) "dcf" — dry cubic feet

(dm) "dcm" — dry cubic meters

(e) "dscf" — dry cubic feet at standard conditions

(em) "dscm" — dry cubic meters at standard conditions

(f) "eq" — equivalent

(fm) " ° F" — degree Fahrenheit

(g) "ft" — foot

(gm) "ft 2 " — square feet

(h) "ft 3 " — cubic feet

(hm) "gal" — gallon

(i) "gr" — grain

(im) "hr" — hour

(j) "in" or , — inch

(jm) "in Hg" — inches of mercury

(k) "in H 2 O" — inches of water

(km) "l" — liter

(L) "lb" — pound

(Lm) "lpm" — liter per minute

(m) "mil" — 10 -3 in

(mm) "min" — minute

(n) "ml" — milliliter — 10 -3 liter

(nm) "mmBtu" — million Btu

(ns) "MPH" — miles per hour

(o) "mrem" — millirem — 10 -3 rem

(om) "oz" — ounce

(p) "pCi" — picocurie — 10 -12 curie

(pm) "ppm" or "ppmv" — parts per million (by volume)

(q) "psia" — pounds per square inch absolute

(qm) "psig" — pounds per square inch gauge

(r) " ° R" — degree Rankine

(rg) "tpy" — tons per year

(rm) "v/v" — volume per volume

(s) "yd 2 " — square yards

(sm) "yr" — year

(t) " m l" — microliter—10 -6 liter

(tm) " m m" — micrometer—10 -6 meter (micron)

(3)  Chemical nomenclature:

(a) "Be" — beryllium

(b) "CdS" — cadmium sulfide

(c) "CO" — carbon monoxide

(d) "CO 2 " — carbon dioxide

(e) "HCl" — hydrochloric acid

(f) "Hg" — mercury

(g) "H 2 O" — water

(h) "H 2 S" — hydrogen sulfide

(i) "H 2 SO 4 " — sulfuric acid

(j) "N 2 " — nitrogen

(k) "NO" — nitric oxide

(L) "NO 2 " — nitrogen dioxide

(m) "NO x " — nitrogen oxides

(n) "O 2 " — oxygen

(o) "Pb" — lead

(om) "SF 6 " — sulfur hexafluoride

(p) "SO 2 " — sulfur dioxide

(q) "SO 3 " — sulfur trioxide

(r) "SO x " — sulfur oxides

(4)  Miscellaneous:

(a) "API" — American Petroleum Institute, 1220 L Street NW, Washington DC 20005

(am) "AQCR" — air quality control region

(b) "ASME" — American Society of Mechanical Engineers, 22 Law Drive, Fairfield, NJ 07007-2900

(bm) "ASTM" — American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959

(c) "avg" — average

(cm) "BACT" — best available control technology

(cs) "CAS no." — Chemical Abstracts Service registry number

(d) "CEM" — continuous emission monitor

(dg) "CERCLA" — federal comprehensive environmental response, compensation and liability act

(dm) "CFC" — chlorofluorocarbon

(e) "CFR" — code of federal regulations

(em) "DOE" — United States department of energy

(f) "EPA" — United States environmental protection agency

(fm) "FC" — fluorocarbon

(g) "FR" — federal register

(gm) "GACT" — generally available control technology

(go) "GHG" — greenhouse gases

(gs) "HAP" — hazardous air pollutant

(h) "HCFC" — hydrochlorofluorocarbon

(hm) "HFC" — hydrofluorocarbon

(i) "I.D." — inside diameter

(im) "LAER" — lowest achievable emission rate

(j) "MACT" — maximum achievable control technology

(jm) "MSDS" — material safety data sheet

(js) "NESHAP" — national emission standards for hazardous air pollutants

(k) "O.D." — outside diameter

(ke) "OSHA" — United States occupational safety and health administration

(kg) "PFC" — perfluorocarbon

(ki) "PM 2.5 " — particulate matter with an aerodynamic diameter < 2.5 m m

(km) "PM 10 " — particulate matter with an aerodynamic diameter ≤ 10 m m

(ks) "PSD" — prevention of significant deterioration

(L) "RACT" — reasonably available control technology

(Lm) "rpm" — revolutions per minute

(m) "SIC" — standard industrial classification

(mm) "TRS" — total reduced sulfur

(n) "TSP" — total suspended particulates

(nm) "USC" — United States Code

(o) "VOC" — volatile organic compound

(om) " w " — greater than or equal to

(p) " v " — less than or equal to

(pm) "%" — percent

(q) " $ " — plus or minus

History: Cr. Register, April, 1995, No. 472 , eff. 5-1-95 ; am. (2), Register, December, 1995, No. 480 , eff. 1-1-96; correction made under s. 13.93 (2m) (b) 1., Stats., Register, December, 1995, No. 480 ; cr. (4) (cs) and (gs), Register, March, 1997, No. 495 , eff. 4-1-97; cr. (4) (ke), Register, September, 1997, No. 501 , eff. 10-1-97; cr. (2) (ns), (rg), (4) (dg) and (ks), Register, October, 1999, No. 526 , eff. 11-1-99; CR 05-040 : cr. (4) (js) Register February 2006 No. 602 , eff. 3-1-06; CR 10-050 : cr. (4) (ki) Register November 2010 No. 659 , eff. 12-1-10; EmR1046 : emerg. cr. (3) (om), (4) (go), (kg), eff. 12-15-10; CR 10-144 : cr. (3) (om), (4) (go), (kg) Register August 2011 No. 668 , eff. 9-1-11.