Source: http://www.lrc.state.ky.us/kar/401/061/015reg.htm
Timestamp: 2018-04-19 15:37:06
Document Index: 731100655

Matched Legal Cases: ['art 60', 'art 63', 'art 63', 'art 63', 'art 63', 'art 60', 'art 60']

401 KAR 61:015. Existing indirect heat exchangers.
RELATES TO: KRS Chapter 224, 40 C.F.R. Part 60, Subpart D, Da, Db, Dc, Part 63, Subparts DDDDD, UUUUU, JJJJJJ
NECESSITY, FUNCTION, AND CONFORMITY: KRS 224.10-100(5) requires the [Environmental and Public Protection] cabinet to promulgate[prescribe] administrative regulations for the prevention, abatement, and control of air pollution. This administrative regulation establishes requirements[provides] for the control of emissions from existing indirect heat exchangers.
Section 1. [Applicability. The provisions of this administrative regulation shall apply to each affected facility commenced before the applicable classification date defined below.
Section 2.] Definitions. As used in this administrative regulation, all terms not defined in this section[herein] shall have the meaning given them in 401 KAR 50:010 and 401 KAR 50:025.
(1) "Affected facility" means an indirect heat exchanger having a heat input capacity of more than one (1) MMBTU/hr[million BTU per hour].
(2) ["Indirect heat exchanger" means any piece of equipment, apparatus, or contrivance used for the combustion of fuel in which the energy produced is transferred to its point of usage through a medium that does not come in contact with or add to the products of combustion.
(a) August 17, 1971, for affected facilities with a capacity of more than 250 MMBTU/hr[million BTU per hour] heat input; or
(b) April 9, 1972, for affected facilities with a capacity of 250 MMBTU/hr[million BTU per hour] heat input or less.
(4) "GCV" means gross calorific value.
(6) "Shutdown period" means [the period]:
(7) "Startup period[periods]" means:
2.[(b)] Ending after the longest manufacturer-recommended time required to engage all control devices utilized by the affected facility applicable to the pollutant, not to exceed (4) four hours after any of the useful thermal energy from the affected facility is supplied for any purpose.
(8) "Useful thermal energy" means energy that meets the minimum operating temperature, flow, or pressure required by any energy use system that uses energy provided by the affected facility.
Section 2. Applicability. The provisions of this administrative regulation shall apply to each affected facility commenced before the applicable classification date.
Section 3. Method for Determining Allowable Emission Rates. (1) Except as established[provided] in subsection (3) of this section, the total rated heat input capacity of all affected facilities at a source, commenced before the applicable classification date within a source, shall be used as established[specified] in Sections 4 and 5 of this administrative regulation to determine the allowable emission rate in terms of lb/MMBTU[pounds of effluent per million BTU] heat input.
(2) The permitted allowable emission rate of an affected facility shall not be changed due to inclusion or shutdown of another affected facility at the source[At such time as any affected facility is assigned an allowable emission rate by the cabinet, at no time thereafter shall that rate be changed due to inclusion or shutdown of any affected facility at the source].
(3) A source may submit a request to the cabinet for approval of an allowable emission rate apportioned independent from individual heat input pursuant to this subsection.
[(a) A source may petition the cabinet to establish an allowable emission rate which may be apportioned without regard to individual affected facility heat input provided that the conditions specified in paragraphs (b), (c), (d), and (e) of this subsection are met. Such allowable emission rate shall be determined according to the following equation:]
1. A = the allowable emission rate (in lb/MMBTU/hr heat[pounds per million BTU] input), as determined according to 401 KAR 59:015, Section 3(1);
2. B = the total rated heat input (in MMBTU/hr[millions of BTU per hour]) of all affected facilities commenced on or after the applicable classification date within a source, including those for which an application to construct, modify, or reconstruct has been submitted to the cabinet;
3. C = the total rated heat input (in MMBTU/hr[millions of BTU per hour]) of all affected facilities within a source, including those for which an application to construct, modify, or reconstruct has been submitted to the cabinet;
4. D = the total emission rate (in lb/MMBTU[pounds per million BTU] input) as determined according to subsection (1) of this section;
5. E = the total rated heat input (in MMBTU/hr[millions of BTU per hour]) of all affected facilities commenced before the applicable classification date; and
6. F = the alternate allowable emission rate (in lb/MMBTU[pounds per actual million BTU] input).
(b) In determining an alternative allowable emission rate for sulfur dioxide, the formula established in paragraph (a) of this subsection shall utilize values for allowable emissions rates for affected facilities stated in terms of total rated heat input capacity based on the use of the same fuel category (solid, liquid, or gaseous fuel), which shall be determined by utilizing the formulas established in Section 5 of this administrative regulation.
(c) The total emissions in lb/hr from all affected facilities at the source subject to this administrative regulation divided by the total actual heat input expressed in MMBTU/hr of the affected facilities shall not exceed the alternate allowable emission rate as determined in paragraph (a) of this subsection.
(d)[(b) At no time shall the owner or operator of the source allow the total emissions (in pounds per hour) from all affected facilities within the source divided by the total actual heat input (in millions of BTU per hour) of all affected facilities within the source to exceed the alternate allowable emission rate as determined by paragraph (a) of this subsection.
(c)] At no time shall the owner or operator of any source subject to federal new source performance standards allow the emissions from any affected facility commenced on or after the applicable classification date to exceed the allowable emission rate determined by use of that affected facility's rated heat input (instead of the heat input as determined by subsection (1) of this section) as established[specified] in 401 KAR 59:015, Sections 4 and 5.
(e)1. The source shall demonstrate compliance with this subsection by conducting a performance test pursuant to 401 KAR 50:45 for each affected facility subject to this administrative regulation.
2. The source shall demonstrate that compliance with this subsection shall be maintained on a continuous basis.[(d) The owner or operator of the source must demonstrate compliance with this subsection by conducting a performance test according to 401 KAR 50:045 on each affected facility under such conditions as may be specified by the cabinet.
(e) Upon petition, the cabinet will establish an alternate emission rate in accordance with this subsection if the owner or operator demonstrates to the cabinet’s satisfaction that the source will maintain compliance with this subsection on a continual basis.]
Section 4. Standard for Particulate Matter. (1) Except as established[provided for] in Sections[Section] 3(3) and 9 of this administrative regulation, an affected facility subject to this administrative regulation shall not cause emissions of particulate matter in excess of[no owner or operator of an affected facility subject to the provisions of this administrative regulation shall cause to be discharged into the atmosphere from that affected facility]:
(a)[(1) Particulate matter in excess of] That established[specified] in Appendix A of this administrative regulation;
(b)[(2) Emissions which exhibit] Greater than twenty (20) percent opacity in regions classified as Priority I, pursuant to Appendix A of this administrative regulation, with respect to particulate matter, except that, for:
1.[(a) That, for] Cyclone or pulverized fired indirect heat exchangers, a maximum of forty (40) percent opacity shall be permissible for not more than one (1) six (6) minute period in any sixty (60) consecutive minutes;
2.[(b) That, for] Stoker fired indirect heat exchangers, a maximum of forty (40) percent opacity shall be permissible for not more than six (6) consecutive minutes in any sixty (60) consecutive minutes during cleaning the fire box or blowing soot and, for indirect heat exchangers with stationary grates, a maximum of forty (40) percent opacity shall be permissible during cleaning of the grates for not more than three (3) consecutive minutes in any sixty (60) consecutive minutes for each section of grates that are cleaned; and
3.[(c) For] Emissions from an indirect heat exchanger during building a new fire for the period required to bring the boiler up to operating conditions if[provided] the method used is that recommended by the manufacturer and the time does not exceed the manufacturer's recommendations;[.]
(c)[(3) Emissions which exhibit] Greater than forty (40) percent opacity in regions classified as Priority II or III with respect to particulate matter except that, for:
1.[(a) That, for] Cyclone or pulverized fired indirect heat exchangers, a maximum of sixty (60) percent opacity shall be permissible for not more than one (1) six (6) minute period in any sixty (60) consecutive minutes;
2.[(b) That, for] Stoker fired indirect heat exchangers, a maximum of sixty (60) percent opacity shall be permissible for not more than six (6) consecutive minutes in any sixty (60) consecutive minutes during cleaning the fire box or blowing soot and, for indirect heat exchangers with stationary grates, a maximum of sixty (60) percent opacity shall be permissible during cleaning of the grates for not more than three (3) consecutive minutes in any sixty (60) consecutive minutes for each section of grates that are cleaned; and
3.[(c) For] Emissions from an indirect heat exchanger during building a new fire for the period required to bring the boiler up to operating conditions if[provided] the method used is that recommended by the manufacturer and the time does not exceed the manufacturer's recommendations.
(2)[(4)] The emission limitations established[contained] in subsection (1)[other subsections] of this section shall not apply to any affected facility (with more than 250 MMBTU/hr[million BTU per hour] heat input capacity, which was in being or under construction before August 17, 1971, or any affected facility with 250 MMBTU/hr[million BTU per hour] capacity or less, which was in being or under construction prior to April 9, 1972) if that affected facility was in compliance prior to April 9, 1972, with, or has a valid permit to operate within the provisions of the previous Kentucky Air Pollution Control Commission Regulation No. 7 [entitled "]Prevention and Control of Emissions of Particulate Matter from Combustion of Fuel in Indirect Heat Exchangers.["] These affected facilities shall comply with the emission limitations in that administrative regulation except that replacement of the particulate emissions control device associated with the affected facility shall subject it to the standard established[contained] in this section.
Section 5. Standard for Sulfur Dioxide. (1) Except as established in Sections[provided for in Section] 3(3) and 9 of this administrative regulation and subsection (5) of this section, an affected facility subject to this administrative regulation shall not cause emissions of gases that[no owner or operator of an affected facility subject to the provisions of this administrative regulation shall cause to be discharged into the atmosphere from that affected facility, any gases which] contain sulfur dioxide in excess of that established[specified] in Appendix B of this administrative regulation.
(2) If[When] different fuels are burned simultaneously in any combination, the applicable standard shall be determined by proration using the following formula:
Allowable Sulfur Dioxide Emission,
(a) x is the percent of total heat input derived from liquid fuel;
(b) y is the percent of total heat input derived from [liquid or] gaseous fuel;
(c) z is the percent of total heat input derived from solid fuel;
(d) a is the allowable sulfur dioxide emission in lb/MMBTU[pounds per million BTU] heat input derived from liquid [or gaseous] fuel; [and]
(e) b is the allowable sulfur dioxide emissions in lb/MMBTU[pounds per million BTU] heat input derived from gaseous[solid] fuel; and
(f) c is the allowable sulfur dioxide emissions in lb/MMBTU heat input derived from solid fuel.
(3) Compliance shall be based on the total heat input from all fuels burned, including gaseous fuels.
(4) In counties classified as VA with respect to sulfur dioxide, for a source[sources] having a total heat input greater than 1,500[1500] MMBTU/hr[1,500,000,000 BTU per hour (1500 MM BTU/hr.)] as determined by Section 3(1) of this administrative regulation, an[no] owner or operator shall not allow the annual average sulfur dioxide emission rate from all existing and new affected facilities combined at the source to exceed six-tenths (0.60) pounds per million BTU.
(5) In counties classified as IA with respect to sulfur dioxide, at a source[sources] having a total rated heat input greater than 1,500[1500] MMBTU/hr[1,500,000,000 BTU per hour (1500 MM BTU/hr.)] as determined by Section 3(1) of this administrative regulation, the cabinet shall allow one (1) affected facility, as stated[specified] on the operating permit, to emit sulfur dioxide at a rate not to exceed a twenty-four (24) hour average of eight and zero-tenths (8.0) lb/MMBTU[pounds per million BTU], during those periods of time when the affected facility is being operated for the purpose of generating high sulfur dioxide content flue gases for use in any experimental sulfur dioxide removal system.
Section 6. Monitoring of Operations. (1) The sulfur content of solid fuels, as burned, shall be determined in accordance with the methods specified by the cabinet.
(2) The sulfur content of liquid fuels, as burned, shall be determined in accordance with the methods specified by the cabinet.
(3)(a) The rate of fuel burned for each fuel shall be measured daily or at shorter intervals and recorded.
(b) The heating value and ash content of fuels shall be ascertained at least once per week and recorded.
(c) If[Where] the indirect heat exchanger is used to generate electricity, the average electrical output and the minimum and maximum hourly generation rate shall be measured and recorded daily.
(4) The owner or operator of an[any] indirect heat exchanger of more than 250 MMBTU/hr[million BTU per hour] heat input subject to the provisions of this administrative regulation shall maintain a file of all measurements required by this administrative regulation and summarized monthly. The record of all measurements[any such measurement(s)] and summary shall be retained for at least two (2) years following the date of [such] measurements and summaries.
(5) The cabinet may require for an[any] indirect heat exchanger of less than 250 MMBTU/hr [million BTU per hour] heat input, any or all the fuel monitoring required by this section.
(6) For an indirect heat exchanger that does not use a flue gas desulfurization device, a continuous monitoring system as established[specified] in 401 KAR 61:005 for measuring sulfur dioxide emissions shall not be[is not] required if the owner or operator monitors the[such] emissions by fuel sampling and analysis [pursuant to Section 7(6) of 401 KAR 59:015].
Section 7. Test Methods and Procedures. (1) Except as established[provided] in 401 KAR 50:045, performance tests used to demonstrate compliance with Sections 4 and 5 of this administrative regulation shall be conducted according to the following methods, incorporated [(filed] by reference in 401 KAR 50:015[)]:
(a) Reference Method 1 for the selection of sampling site and sample traverses;
(b) Reference Method 3 for gas analysis to be used when applying Reference Methods 5 and 6[, 6 and 7];
(c) Reference Method 5 for the concentration of particulate matter and the associated moisture content;
(d) Reference Method 6 for the concentration of sulfur dioxide; and
(e) Reference Method 9 for visible emissions[Reference Method 7 for the concentration of nitrogen oxides].
(a) [,] Reference Method 1 shall be used to select the sampling site and the number of traverse sampling points;[.]
(b) The sampling time for each run shall be at least sixty (60) minutes and the minimum sampling volume shall be 0.85 dscm (thirty (30) dscf), except that smaller sampling times or volumes, if[when] necessitated by process variables or other factors, may be requested by the source; and[approved by the Cabinet][.]
(c) The probe and filter holder heating systems in the sampling train shall be set to provide a gas temperature not[no] greater than 160°C (320°F).
(3) For Reference Methods 6:[;]
(a) [and 7,] The sampling site shall be the same as that selected for Reference Method 5;[.]
(b) The sampling point in the duct shall be at the centroid of the cross section or at a point no closer to the walls than one (1) m (3.28 ft.);[.]
(c)[For Reference Method 6,] The sample shall be extracted at a rate proportional to the gas velocity at the sampling point;[.]
(d)[(4) For Reference Method 6,] The minimum sampling time shall be twenty (20) minutes, and the minimum sampling volume shall be 0.02 dscm (0.71 dscf) for each sample;[.].
(e) The arithmetic mean of two (2) samples shall constitute one (1) run; and[.]
(f) Samples shall be taken at approximately thirty (30) minute intervals.
(4)[(5)](a) [For Reference Method 7, each run shall consist of at least four (4) grab samples taken at approximately fifteen (15) minute intervals. The arithmetic mean of the samples shall constitute the run value.
(6)] For each run using the methods established[specified] by subsection (1)[(c), (d), and (e)] of this section, the emissions expressed in g/million cal (lb/MMBTU[lb/million BTU]) shall be determined by the following equation:
1. E = pollutant emission, g/million cal (lb/MMBTU[lb/million BTU]);[.]
2. C = pollutant concentration, g/dscm (lb[.]/dscf) determined by Reference Method 5, or 6;[or 7][.]
3. F = a factor as determined in 40 C.F.R. 60.45(f); and[401 KAR 59:015, Section 7][.]
4. %O2 = oxygen content by volume (expressed as percent), dry basis.
Percent oxygen shall be determined by using the integrated or grab sampling and analysis procedures for Reference Method 3 as applicable. The sample shall be obtained as established in paragraphs (b) and (c) of this subsection.[follows:]
(b)[(a)] For determination of sulfur dioxide and nitrogen oxides emissions, the oxygen sample shall be obtained simultaneously at the same point for Reference Method 6 [and 7] determinations[, respectively. For Reference Method 7, the oxygen sample shall be obtained using the grab sampling and analysis procedures for Reference Method 3].
(c)1.[(b)] For determination of particulate emissions, the oxygen sample shall be obtained simultaneously by traversing the duct at the same sampling location used for each run of Reference Method 5 pursuant to[under] subsection (2) of this section.
2. Reference Method 1 shall be used for selection of the number of traverse points except that no more than twelve (12) sample points shall be[are] required.
(5)[(6)] If[(7) When] combinations of fossil fuels are fired, the heat input, expressed in cal/hr. (BTU/hr.), shall be determined during each testing period by multiplying the gross calorific value of each fuel fired by the rate of each fuel burned. GCV[GVC][Gross calorific value] shall be determined in accordance with ASTM methods D2015-66(72) (solid fuels), D240-64(73) (liquid fuels), or D1826-64(70) (gaseous fuels), as applicable (ASTM designations incorporated[filed] by reference in 401 KAR 50:015). The rate of fuels burned during each testing period shall be determined by suitable methods and shall be confirmed by a material balance over the steam generation system.
Section 8. Compliance Timetable. (1) An affected facility[facilities] located in an area[areas] designated as attainment for sulfur dioxide or[and/or] particulate matter shall be in compliance as of June 6, 1979.
(2)(a) In Class IA counties, the owner or operator of any affected facility in any source with a[whose] total rated capacity of 16,000 MMBTU/hr[is sixteen thousand million BTU per hour (16,000 MM BTU/hr)] or more shall be required to [complete the following]:
1. Submit a final control plan for achieving compliance with this administrative regulation no later than May 1, 1978;
2. Award contracts for complying coal by January 1, 1979;
3. Initiate use of [such] complying coal on or before December 1, 1979; and
4. Demonstrate compliance by performance tests on or before October 1, 1981.
(b) In Class IVA counties designated as nonattainment for sulfur dioxide, the owner or operator of any affected facility in any source with a total rated capacity of greater than 1,500 MMBTU/hr[1,500,000,000 BTU per hour (1,500 MM BTU/hr)] but less than 21,000 MMBTU/hr[twenty-one thousand million BTU per hour (21,000 MM BTU/hr)] shall be required to [complete the following]:
1. Submit a final control plan for achieving compliance with this administrative regulation no later than May 1, 1979;
2. Award contracts for complying coal by August 1, 1979;
3. Initiate use of [such] complying coal on or before January 1, 1980; and
4. Demonstrate compliance by performance tests on or before March 1, 1980.
(c) In Class IVA counties designated as nonattainment for sulfur dioxide, the owner or operator of any affected facility in any source with a total rated capacity of greater than 21,000 MMBTU/hr[twenty-one thousand million BTU per hour (21,000 MM BTU/hr)] shall be required to [complete the following]:
1. Submit a control plan for flue gas desulfurization and initiate construction of a coal washing plant on or before June 1, 1978;
2. Issue invitations for bids for construction and installation of flue gas desulfurization equipment on or before October 1, 1978;
3. Award contract for construction and installation of flue gas desulfurization equipment on or before March 1, 1979;
4. Initiate construction of flue gas desulfurization equipment on or before December 1, 1979;
5. Complete construction of coal washing plant on or before December 1, 1980;
6. Complete construction of flue gas desulfurization equipment on or before June 1, 1982; and
7. Demonstrate compliance by performance tests on or before September 1, 1982.
Section 9. Standards During a Startup Period or a Shutdown Period. During a startup period or a shutdown period, an owner or operator shall comply with the work practice standards established in this section.
(1)(a) The owner or operator shall comply with 401 KAR 50:055, Section 2(5)[At all times, the owner or operator of each affected facility shall operate the affected facility and all applicable control devices in a manner consistent with good air pollution control practices for minimizing emissions];
(2)(a) An affected facility subject to 40 C.F.R. 63.7500 shall meet the work practice standards established in [Table 3 to Subpart DDDDD of] 40 C.F.R. Part 63, Table 3 to Subpart DDDDD, as established in 401 KAR 63:002, Section 2(4)(iiii);
(b) An affected facility subject to 40 C.F.R. 63.9991 shall meet the work practice standards established in [Table 3 to Subpart UUUUU of] 40 C.F.R. Part 63, Table 3 to Subpart UUUUU, as established in 401 KAR 63:002, Section 2(4)(yyyy); or
(c) An affected facility subject to 40 C.F.R. 63.11201 shall meet the work practice standards established in [Table 2 to Subpart JJJJJJ of] 40 C.F.R. Part 63, Table 2 to Subpart JJJJJJ, as established in 401 KAR 63:002, Section 2(4)(jjjjj).
Section 10. Incorporation by Reference. (1) "Kentucky Air Pollution Control Commission Regulation No. 7 Prevention and Control of Emissions of Particulate Matter from Combustion of Fuel in Indirect Heat Exchangers" (November 1969), is incorporated by reference.
(2) This material may be inspected, copied, or obtained, subject to applicable copyright law, at the Division of Air Quality, 300 Sower Boulevard, Frankfort, Kentucky 40601, Monday through Friday, 8 a.m. to 4:30 p.m.
APPENDIX A TO 401 KAR 61:015
ALLOWABLE PARTICULATE EMISSION RATES
For sources having a total
heat input capacity (as determined by Section 3(1) of:
The standard (in pounds per million BTU actual heat input)
is (based upon the Priority classification with respect to particulates of the region in which the source is located):
(MM BTU/Hr.)
Interpolation of allowable emissions for intermediate heat input values not established[specified] above may be accompanied by use of the equations shown below for the appropriate heat input range [specified]. In all equations X = MMBTU/hr[millions of BTU per hour] heat input as determined by Section 3(1), and Y = allowable particulate emissions in pounds per MMBTU[million BTU] actual heat input.
Region Classification with respect to
(Lb.s/MM BTU)
Y = 0.9634 X -0.2356
Y = 1.2825 X -0.2330
Y = 1.3152 X -0.2159
CONTACT PERSON: Cassandra Jobe, Supervisor, Division for Air Quality, 300 Sower Blvd., Frankfort, Kentucky 40601, phone (502) 782-6670, fax (502) 564-4245, email Cassan-dra.Jobe@ky.gov.
(a) What this administrative regulation does: This administrative regulation provides for the control of emissions of criteria pollutants from existing indirect heat exchangers.
(b) The necessity of this administrative regulation: This administrative regulation is necessary to control the air emissions of criteria pollutants from existing indirect heat exchangers. This administrative regulation is necessary for the Energy and Environment Cabinet (Cabinet) to protect human health and the environment by establishing emission limits for criteria pollutants for existing indirect heat exchangers.
(c) How this administrative regulation conforms to the content of the authorizing statutes: KRS 224.10-100(5) authorizes the Cabinet to promulgate administrative regulations for the prevention, abatement, and control of air pollution. This administrative regulation provides for the control of emissions from existing indirect heat exchangers. This administrative regulation is part of the Kentucky State Implementation Plan (SIP).
(d) How this administrative regulation currently assists or will assist in the effective administration of the statutes: This administrative regulation will enable the Cabinet to continue to implement and enforce the control of emissions from existing indirect heat exchangers, resulting in the protection of human health and the environment and attainment of the National Ambient Air Quality Standards (NAAQS).
(a) How the amendment will change this existing administrative regulation: This amendment clarifies the definitions of startup period and shutdown period to be consistent with federal definitions. This amendment also clarifies the requirements for work practice standards.
(b) The necessity of the amendment to this administrative regulation: This amendment is necessary to clarify definitions for consistency with federal regulations. The amendment also clarifies the requirements for work practice standards.
(3) List the type and number of individuals, businesses, organizations, or state and local governments affected by this administrative regulation. Owners and operators of existing indirect heat exchangers will be affected by this administrative regulation.
(9) TIERING: Is tiering applied?Yes. Emission limits for affected facilities apply based on the capacity of the existing indirect heat exchanger.
1. What units, parts or divisions of state or local government (including cities, counties, fire departments, or school districts) will be impacted by this administrative regulation? This administrative regulation has the potential to affect any unit, part, or division of state or local government operating an existing indirect heat exchanger. The Division for Air Quality will continue to permit sources in accordance with this administrative regulation.
2. Identify each state or federal statute or federal regulation that requires or authorizes action taken by the administrative regulation. KRS 224.10-100(5), 224.20-120, 42 U.S.C. 7410, 7411, and 40 C.F.R. Part 60
1. Federal statute or regulation constituting the federal mandate. The federal mandate for this administrative regulation is in 40 C.F.R. Part 60 and 42 U.S.C. 7411.
2. State compliance standards. This administrative regulation provides for the control of emissions from existing indirect heat exchangers.
3. Minimum or uniform standards contained in the federal mandate. 42 U.S.C. 7411 requires that the U.S. EPA promulgate emission standards for existing stationary sources.
5. Justification for the imposition of the stricter standard, or additional or different responsibilities or requirements. The work practice standards were requested as an alternative way to address emissions, particularly during periods of startup and shutdown.