HAR §11-59-4
HAR §11-59-4. Ambient air quality standards
Cite as Haw. Code R. § 11-59-4
(a)
The numerical ambient air quality standards below limit
the time-averaged concentration of specified pollutants
dispersed or suspended in the ambient air of the State,
but these standards do not in any manner authorize the
significant deterioration of existing air quality in
any portion of the State.
(b)
Limiting concentrations specified for a
calendar year or a calendar quarter shall not be
exceeded. Limiting concentrations specified for
one-hour, three-hour, eight-hour, and twenty-four-hour
periods shall not be exceeded more than once in a
calendar year.
(c)
In the ambient air the concentration of
carbon monoxide measured by a reference method shall
not exceed:
(1)
An average value of ten milligrams per cubic
meter of air during any one-hour period; and
(2)
An average value of five milligrams per cubic
meter of air during any eight-hour period.
(d)
In the ambient air the average concentration
of nitrogen dioxide measured by a reference method
during a calendar year shall not exceed seventy
micrograms per cubic meter of air.
(e)
In the ambient air the concentration of
particulate matter as particles with an aerodynamic
diameter less than or equal to a nominal ten
micrometers measured by a reference method shall not
exceed:
§11-59-5
59-3
(1)
An arithmetic mean of fifty micrograms per
cubic meter of air during a calendar year;
and
(2)
An average value of one hundred fifty
micrograms per cubic meter of air during any
twenty-four-hour period.
(f)
In the ambient air the average concentration
of ozone measured by a reference method during any
eight-hour period shall not exceed one hundred fifty-
seven micrograms per cubic meter of air.
(g) In the ambient air the average concentration
of sulfur dioxide measured by a reference method shall
not exceed:
(1)
An average value of eighty micrograms per
cubic meter of air in a calendar year;
(2)
An average value of three hundred sixty-five
micrograms per cubic meter of air in any
twenty-four-hour period; and
(3)
An average value of one thousand three
hundred micrograms per cubic meter of air in
any three-hour period.
(h)
In the ambient air the average concentration
of lead measured as elemental lead by a reference
method during a calendar quarter shall not exceed 1.5
micrograms per cubic meter of air.
(i) In the ambient air the average concentration
of hydrogen sulfide measured by a reference method
shall not exceed thirty-five micrograms per cubic meter
of air (twenty-five parts per billion) in any one-hour
period. [Eff 11/29/82; am 4/14/86; am and comp
6/29/92; am and comp 11/26/93; am and comp
9/15/01](Auth: HRS §§342B-3, 342B-31; 42 U.S.C.
§§7410, 7416; 40 C.F.R. Parts 50, 51) (Imp: HRS
§342B-31; 42 U.S.C. §§7407, 7409, 7410, 7416; 40 C.F.R.
Parts 50, 51)