Ind. Admin. Code tit. 326, r. 7-4-12.1 – Gibson County sulfur dioxide emission limitations

Sec. 12.1. (a) Prior to January 1, 1992, Public Service Indiana (PSI) Gibson Units 1, 2, 3, 4, and 5 shall comply with the sulfur dioxide emission limitations in pounds per million Btu (lbs./MMBtu) and other requirements as follows:

Facility Description		Emission Limitations
Units 1, 2, 3, and 4		5.1
Unit 5
	New source performance standard pursuant to 326 IAC 12	1.2
	Twenty-four (24) hour average	1.10

(b) Beginning January 1, 1992, Public Service Indiana (PSI) Gibson Units 1, 2, 3, 4, and 5 shall comply with the sulfur dioxide emission limitations in pounds per million Btu (lbs./MMBtu) and other requirements as provided under either subdivision (1) or (2) as follows: In order to achieve compliance with the sixty-hundredths (0.60) pounds per million Btu emission limitation for Unit 4, PSI shall install and operate a flue gas desulfurization (FGD) system on Unit 4 as follows:

(1)	Facility Description	Emission Limitations
	Units 1, 2, 3, and 4
	Beginning January 1, 1992	3.57
	No later than December 31, 1993	3.13
	No later than December 31, 1995	2.7
	Unit 5
	Beginning January 1, 1992
	New source performance standard pursuant to 326 IAC 12	1.2
	Twenty-four (24) hour average	1.10
	No later than December 31, 1995	1.10
(2)	Facility Description	Emission Limitations
	Units 1, 2, and 3
	Beginning January 1, 1992	3.57
	No later than December 31, 1993	3.13
	No later than December 31, 1995	3.19
	Unit 4
	Beginning January 1, 1992	3.57
	No later than December 31, 1993	3.13
	No later than December 31, 1995	0.60

(A) Select architectural engineer for design of FGD system by July 1, 1992.

(B) Award contract for construction of FGD system and begin construction by July 1, 1993.

(D) Begin operation of FGD system by December 31, 1995.

Unit 5
	Beginning January 1, 1992
		New source performance standard pursuant to 326 IAC 12	1.2
		Twenty-four (24) hour average	1.10
	No later than December 31, 1995		1.10

PSI shall indicate in a certified letter to the commissioner whether it intends to comply with the emission limitations and other requirements under either subdivision (1) or (2) by December 31, 1991.

(1) secure contracts by July 1, 1991, for the purchase of low-sulfur coal sufficient to attain and maintain compliance with the applicable emission limitations contained in subsection (b)(1) or (b)(2);
(2) complete test coal burns and engineering studies by July 1, 1994, to determine the need for particulate control upgrades in order to meet the applicable emission limitations;
(3) complete particulate control upgrades, as necessary, by December 31, 1995;
(4) establish procedures and complete equipment installation, as appropriate, for coal blending on Units 1, 2, 3, and 4:
1. (A) by September 30, 1991, in order to meet the interim emission limitation of three and fifty-seven hundredths (3.57) pounds per million Btu by December 31, 1991; and
2. (B) by September 30, 1993, in order to meet the interim emission limitation of three and thirteen-hundredths (3.13) pounds per million Btu by December 31, 1993;
(5) turn over existing coal stockpile to eliminate higher sulfur coal by December 31, 1991; and
(6) construct or utilize effective physical barriers, prior to December 31, 1991, to restrict public access to areas of the PSI Gibson property for which modeled violations were predicted based on the emission limitation of three and fifty-seven hundredths (3.57) pounds per million Btu.

(Air Pollution Control Division; 326 IAC 7-4-12.1; filed Nov 5, 1990, 11:53 a.m.: 14 IR 438; readopted filed Jan 10, 2001, 3:20 p.m.: 24 IR 1477; readopted filed Oct 18, 2024, 2:09 p.m.: 20241113-IR-326230809RFA)