Okla. Admin. Code § 252:100-3-4 - Significant deterioration increments

Current through Register Vol. 39, No. 7, December 15, 2021

(a) Significant deterioration, as used in the phrase Prevention of Significant Deterioration (PSD), means an increase in ambient air pollution above a baseline plus a specific increment allowed for one of three classes of areas. See OAC 252:100-8, Part 7.
(b) The allowable increments are as follows:
(1) Class I Areas:
(A) PM2.5 (effective October 20, 2011):
(i) annual arithmetic mean: maximum allowable increase is 1 microgram per cubic meter.
(ii) twenty-four hour maximum: maximum allowable increase is 2 micrograms per cubic meter.
(B) PM10:
(i) annual arithmetic mean: maximum allowable increase is 4 micrograms per cubic meter.
(ii) twenty-four hour maximum: maximum allowable increase is 8 micrograms per cubic meter.
(C) Sulfur dioxide:
(i) annual arithmetic mean: maximum allowable increase is 2 micrograms per cubic meter.
(ii) twenty-four hour maximum: maximum allowable increase is 5 micrograms per cubic meter.
(iii) three-hour maximum: maximum allowable increase is 25 micrograms per cubic meter.
(D) Nitrogen dioxide (effective May 11, 1991), annual arithmetic mean: maximum allowable increase is 2.5 micrograms per cubic meter.
(2) Class II Areas:
(A) PM2.5 (effective October 20, 2011):
(i) annual arithmetic mean: maximum allowable increase is 4 micrograms per cubic meter.
(ii) twenty-four hour maximum: maximum allowable increase is 9 micrograms per cubic meter.
(B) PM10:
(i) annual arithmetic mean: maximum allowable increase is 17 micrograms per cubic meter.
(ii) twenty-four hour maximum: maximum allowable increase is 30 micrograms per cubic meter.
(C) Sulfur dioxide:
(i) annual arithmetic mean: maximum allowable increase is 20 micrograms per cubic meter.
(ii) twenty-four hour maximum: maximum allowable increase is 91 micrograms per cubic meter.
(iii) three-hour maximum: maximum allowable increase is 512 micrograms per cubic meter.
(D) Nitrogen dioxide (effective May 11, 1991), annual arithmetic mean: maximum allowable increase is 25 micrograms per cubic meter.
(3) Class III Areas:
(A) PM2.5 (effective October 20, 2011):
(i) annual arithmetic mean: maximum allowable increase is 8 micrograms per cubic meter.
(ii) twenty-four hour maximum: maximum allowable increase is 18 micrograms per cubic meter.
(B) PM10:
(i) annual arithmetic mean: maximum allowable increase is 34 micrograms per cubic meter.
(ii) twenty-four hour maximum: maximum allowable increase is 60 micrograms per cubic meter.
(C) Sulfur dioxide:
(i) annual arithmetic mean: maximum allowable increase is 40 micrograms per cubic meter.
(ii) twenty-four hour maximum: maximum allowable increase is 182 micrograms per cubic meter.
(iii) three-hour maximum: maximum allowable increase is 700 micrograms per cubic meter.
(D) Nitrogen dioxide (effective May 11, 1991), annual arithmetic mean: maximum allowable increase is 50 micrograms per cubic meter.

Notes

Okla. Admin. Code § 252:100-3-4
Added at 11 Ok Reg 977, eff 1-14-94 (emergency); Added at 11 Ok Reg 2031, eff 5-26-94; Amended at 13 Ok Reg 885, eff 11-4-95 (emergency); Amended at 13 Ok Reg 1917, eff 7-1-96; Amended at 22 Ok Reg 1107, eff 6-15-05; Amended at 28 Ok Reg 1179, eff 7-1-11

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