### Technical Support Document for AQ 305, adopted January 20, 2010
The following review involves revisions to the State of Louisiana’s NOX control rule (LAC 33:III.2201) that was originally approved at 67 FR 60877, September 27, 2002, titled “Approval and Promulgation of Implementation Plans; Louisian a; Control of Emissions of Nitrogen Oxides in the Baton Rouge Ozone Nonattainment Area. Th is review also evaluates a new Section (LAC 33:III.2202) titled “Contingency Plan,” that w ould serve to extend Ch 2201’s applicability by extending the definition of “ozone season” in Ch 2201 to include the months of April and October, if EPA makes a determination that th at the Baton Rouge area has violated the 8-hour ozone National Ambient Air Quality Standard (N AAQS), and that the department must put a contingency plan into effect, as part of th e state’s CAA Section 175A maintenance plan. Currently, LAC 33:III.2201 applies during the oz one season from May 1 to September 30 of each year. The nonattainment area includes th e parishes of Ascension, East Baton Rouge, Iberville, Livingston, and West Baton Rouge. Th e four attainment parishes in the region of influence include East Feliciana, Pointe Coupee, St. Helena, and West Feliciana

Chapter 22. Control of Emissions of Nitrogen Oxides (NOx)
The regulatory text that is being revised is offset in 10 point font. Additions are in red, and deletions appear as strikeouts. Ou r analysis appears in 12 point font.
2201. Affected Facilities in the Baton Rouge Nonattainment Area and the Region of Influence

A.2. The provisions of this Chapter shall apply during the ozone season , as defined in Subsection B of this Section, (May 1 to September 30) of each year.



### The clarification to the referen ced subsection above is editorial/ ministerial in nature. This subsection should be approved. The Region of In fluence constitutes the 4 ozone attainment parishes of East Feliciana, Pointe Coupee, St. Helena, and West Feliciana.

2201.B. Definitions.

Affected Facility --- any facility within the Baton Rouge Nonattainment Area with one or more point sources that collectively emit or have the potential to emit 25 tons or more per year of NOx, unless exempted in Subsection C of this Section, or any facility within the Region of Influence with one or more affected point sources that collectively emit or have the potential to emit 50 tons or more per year of NOx, unless exempted in Subsection C of this Section. Exempt sources in a facility shall not be included the determination of whether it is an affected facility. 

### The changes to the definition of the affected fac ility clarifies that Chapter 22 applies when the potential to emit is equal to or greater than 25 ton per year. This threshold limit is consistent with the major stationary source definition in sec tion 182(d) of the Act fo r severe 1-hour areas.

### Furthermore, addition of the term “collectively” se rves as a gatekeeper/deterrent to avoid rule applicability by dividing the overa ll emissions among different units . This subsection should be approved.

Low Ozone Season Capacity Factor Boiler or Process Heater/Furnace --- a boiler or process heater/furnace in the Baton Rouge Nonattainment Area with maximum rated capacity greater than or equal
to 40 MMBtu/hour and an ozone season average heat input less than or equal to 12.5 MMBtu/hour, using a 30-day rolling average; or in the Region of Influence with a maximum rated capacity greater than or equal
to 80 MMBtu/hour and ozone season average heat input less than or equal to 25 MMBtu/hour, using a 30- day rolling average. 

### Use of a 30-day rolling average is an EPA accepte d averaging method for NOx rules in order to produce a more replicable emission standard fo r comparison/compliance determination purposes. Lowering of the heat input limit for boiler or process heater from 80 to 40 MMBtu/hour, and from 40 to 12.5 MMBtu/Hr in the Baton Rouge Nonattainment Area should strengthen the SIP. Lowering the heat input means mo re sources become subject to NOx controls. As more sources become subject to NOx controls, more reductions are to be expected. This subsection should be approved.

Ozone Season --- except as provided in LAC 33:III.2202, the period May 1 to September 30, inclusively inclusive, of each year. 

### The change in this subsection is editorial in nature and should be approved. It is also approvable because it extends the duration of its ozone seas on from the existing May 1 to September 30 of each calendar year to April 1 st 

### to October 31 under 2202 Contingency Pl an. See that section below for more details.

Thirty-Day (30-Day) Rolling Average --- an average, calculated for each day that fuel is combusted, of hourly emi ssions data for the preceding 30 days that fu el is combusted in an affected point source. daily, or all hourly data for the last 30 days for an affected point source. At the beginning of each ozone season, use one of the following methods to cal culate the initial 30-day averages:

a. Calculate and record the average of all hourly re adings taken during the first day of the ozone season for day one, then the average of all hourly readings taken during the first and second days for day two and so on until the first full 30-day average falling entirely within the ozone season is reached; b. Calculate and record a 30-day rolling average for day one of the ozone season using the hourly readings from that day and the previous 29 calendar days, for the second day of the ozone season using the readings from the first two ozone season days and the preceding 29 calendar days, and so on until the first full 30-day average falling entirely within the current ozone season is reached; or

c. Calculate the record a 30-day ro lling average for day one of the ozone season using the hourly readings from that day and the last 29 days of the previous ozone season, for the second day of the ozone season using the readings from the first two current ozone season days and the last 28 days of the previous ozone season, and so on until the first full 30-day average falling entirely within the current ozone season is reached.

### The change explains in detail how to calculate the 30-day rolling av erage. Including this level of detail should minimize or eliminate potenti al confusion, and will facilitate compliance determination. This subsec tion should be approved.
2201.C. Exemptions.

C. Exemptions . The following categories of equipment or processes located at an affected facility within the Baton Rouge Nonattainment Area or the Region of Influence are exempted from the provisions of this Chapter:

4. low ozone season capacity factor boilers and process heater/furnaces
, as defined in Subsection B of this Section , in accordance with Paragrap h H.11 of this Section;



### The clarification to the refere nced section above is editoria l/ ministerial in nature. This subsection should be approved.

6. any point source, in accordance w ith Paragraph H.12 of this Section, that operates less than 400 hours 3 hours per day, using a 30-day rolling average, during the ozone season;



### Use of a smaller number of hours (3) instead of an overall total (400), combined with the rolling average criteria explained in deta il in a subsection earlier promotes consistency amongst level (3 hours) and type (30-day rolling) of average utilized in the rule. This subsection should be approved.

15. any affected point source that is required to meet a more stringent state or federal NOx emission limitation, whether by regulation or permit

. ( In this case, the monitoring, reporting, and recordkeeping requirements shall be in accordance with the more stri ngent regulation or permit and not this Chapter. If the applicable regulation or permit does not specify monitoring, reporting, and recordkeeping requirements, the provisions of this Chapter shall apply.) ;



### The change is merely a change in punctuation at the end of the para graph to allow for the addition of other paragraphs.

18. any affected point source firing Number 6 Fuel Oil fuel oil during a period of emergency and approved by the administrative authority; 

### Previously the state allowed bur ning of #6 fuel oil by written approval only. Now burning of any type of fuel oil would require written approval. This allows LDEQ to know more about what sources plan to do in advance, thus plan appropriately. The change in this subsection is approveable.

### 2201.D. Emission Factors

1. The following table lists NOx emission factors that shall apply to affected point sources located at affected facilities in the Baton Rouge Nonattainment Area or the Region of Influence.

Table D-1A NOx Emission Factors for Sources in the Baton Rouge Nonattainment Area Category Maximum Rated Capacity NOx Emission Factor a

Electric Power Generating System Boilers: Coal-fired >/= 40 to <80MMBtu/Hour >/= 80 MMBtu/Hour 0.50 pound/MMBtu
0.21 pound/MMBtu

Number 6 Fuel Oil-fired >/= 40 to <80MMBtu/Hour >/= 80 MMBtu/Hour 0.30 pound/MMBtu
0.18 pound/MMBtu

All Others (gaseous or liquid) >/= 40 to <80MMBtu/Hour >/= 80 MMBtu/Hour 0.20 pound/MMBtu
0.10 pound/MMBtu

Industrial Boilers : All Fuels >/= 40 to <80MMBtu/Hour >/= 80 MMBtu/Hour 0.20 pound/MMBtu
0.10 pound/MMBtu

Process Heater/Furnaces: Ammonia Reformers >/= 40 to <80MMBtu/Hour >/= 80 MMBtu/Hour 0.30 pound/MMBtu
0.23 pound/MMBtu

All Others >/= 40 to <80MMBtu/Hour >/= 80 MMBtu/Hour 0.18 pound/MMBtu
0.08 pound/MMBtu

Stationary Gas Turbines: Peaking Service, Fuel Oil-fired >/= 5 to <10 MW >/= 10 MW 0.37 pound/MMBtu
0.30 pound/MMBtu Peaking Service, Gas-fired >/= 5 to <10 MW >/= 10 MW 0.27 pound/MMBtu
0.20 pound/MMBtu All Others >/= 5 to <10 MW >/= 10 MW 0.24 pound/MMBtu b 0.16 pound/MMBtu c Stationary Internal Combustion Engines: Lean-burn (Region of Influence) >/= 150 to <320 Hp 4 10 g/Hp-hour Lean-burn (Baton Rouge >/= 320 Hp 4g/Hp-hourNonattainment Area) Rich-burn >/= 150 to <300 Hp >/= 300 Hp 2g/Hp-hour
2g/Hp-hour



### Including a lowered maximum rated capacity for the source categories above should make the universe of units subject to these NOx emission fact ors larger. As more un its become subject to these factors we anticipate emissions to be lowe red. Lowering the heat input means more sources become subject to NOx controls. As more s ources become subject to NOx controls, more reductions is to be expected. This subsection should be approved.

a all factors are based on the higher heating value of the fuel.

b equivalent to 42 65 ppmv (15 percent O 2 , dry basis) with an F factor of 8710 dscf/MMBtu.

c equivalent to 42 43 ppmv (15 percent O 2 , dry basis) with an F factor of 8710 dscf/MMBtu. 

### Stating the equivalent of the NOx factor for sta tionary gas turbines in units of concentration (ppm) provides for flexibility when comparing sta ndards with those of other federal regulations such as NSPS. This change should be approved.

Table D-1B NOx Emission Factors for Sources in the Region of Influence Category Maximum Rated Capacity NOx Emission Factor a

Electric Power Generating System Boilers: Coal-fired >/= 80 MMBtu/Hour 0.21 pound/MMBtu

Number 6 Fuel Oil-fired >/= 80 MMBtu/Hour 0.18 pound/MMBtu

All Others (gaseous or liquid) >/= 80 MMBtu/Hour 0.10 pound/MMBtu

Industrial Boilers >/= 80 MMBtu/Hour 0.10 pound/MMBtu

Process Heater/Furnaces: Ammonia Reformers >/= 80 MMBtu/Hour 0.23 pound/MMBtu

All Others >/= 80 MMBtu/Hour 0.08 pound/MMBtu

Stationary Gas Turbines: Peaking Service, Fuel Oil-fired >/= 10 MW 0.30 pound/MMBtu Peaking Service, Gas-fired >/= 10 MW 0.20 pound/MMBtuAll Others >/= 10 MW 0.16 pound/MMBtu b Stationary Internal Combustion Engines: Lean-burn (Region of Influence) >/= 1500 Hp 4g/Hp-hour

Lean

- burn (Baton Rouge Nonattainment Area) >/= 320 Hp 4g/Hp

- hour

Rich-burn >/= 300 Hp 2g/Hp-hour

a all factors are based on the higher heating value of the fuel.

b equivalent to 42 43 ppmv (15 percent O 2 , dry basis) with an F factor of 8710 dscf/MMBtu. 

### Changes to the table above are the result of crea ting separate tables for both the Nonattainment area sources and the sources in the Region of Influence. This change is approvable.

9. On a day that is designated as an Ozone Action Day by the department, a facility shall not fire an affected point source with Number 6 Fuel Oil or perform testing of emergency and training combustion units without prior approval of the administrative authority. If a facility has received approval from the administrative authority for a plan to use Number 6 fuel oil, this is considered prior approval for purposes of this Paragraph. 

### This statement will prevent potential confusion and promotes consistency. For nonattainment parishes now, use of any fuel oil requires written authorization. For the region of influence the existing written authorization for #6 fuel oil is retained. The added language, by allowing the prior approvals to remain in effect, serves as a clarification to avoi d confusion and the new limitation would not be retroactively effec tive. This subsection should be approved

2201.E.1.

d. An owner or operator that chooses to use the provisions of Clause E.1.b.i or E.1. c.i of this Section to demonstrate compliance in an averaging plan shall include in the submitted plan a description of the actions that will be taken if any under-controlled unit is oper ated at more than 10 percent above its averaging capacity (HI i in Subparagraph E.1.a of this Section). Such actions may include a comparison of the total current emissions from all units in the averaging plan to the total emissions that would result if the units in the plan were operated in accordance with Subsection D of this Section, other re views, reporting, and/or mitigation actions. If the department determines that the actions are not adequate to prevent an increase of emissions over the total emissions that would resu lt if the units were opera ted in accordance with Subsection D of this Section, the department shall require that the averaging plan and/or the action plan be revised or shall disallow the use of the averaging plan. 

### The change in this subsection is editori al in nature and should be approved.

f. NOx reductions accomplished after 1997 through cu rtailments in capacity of a point source with a permit revision or by permanently shutting down the point source may be included in the averaging plan. In order to include a unit with curtailed capacity or that has been permanently shut down in the averagingplan, the old averaging capacity, determined from the average of the two ozone seasons prior to the capacity curtailment or shutdown or such other two-year period approved by as the department may approve, shall be used to calculate the unit's contribution to the term FL. The new averaging capacity, determined from the enforceable permit revision, shall be multiplied by the owner assigned limit to calculate the contribution of the curtailed unit to the cumulative emission factor fo r the averaging group. For a shut down source, the contribution to th e cumulative emission factor shall be zero. 

### This change provides for calculation of the aver age capacity of a shutdown unit. This change should assist with compliance determination aspe ct of the rule. This subsection should be approved.

g. NOx reductions from post 1997 modifications to exempted point sources, as defined in Subsection C of this Section, may be used in a f acility-wide averaging plan. If a unit exempted in Subsection C of this Section is included in an averaging plan, the term R Ii in Equation E-1 shall be established, in accordance with Subsection G of this Section, from a stack test or other determination of emissions approved by the department that was performed before the NOx reduction project was implemented and the term R ai shall be established from the owner-assigned emission factor in accordance with Subparagraph E.1.a of this Section. For the case of a point source exempted by Paragraph C.15 of this Section, if the permit limits were established after 1997 and were not required by a state or federal regulation, the source may be included in an averaging plan, with the term R Ii taken from Table D-1A or D-1B in Paragraph D.1 of this Section. 

### The change provides for calculation of NOx reductions as a of part facility-wide averaging plan provision in section 2201. This change should provide for consistency among such calculations in a facility’s averaging plan as they are submitted to LDEQ for review. This section should be approved.

2201.G.5.
5. Compliance with the emission specifications of Subsection D or E of this Section for affected point sources operating without CEMS or PEMS shall be demonstrated while operating at the maximum rated capacity, or as near thereto as prac ticable. The stack tests shall be pe rformed according to emissions testing guidelines located on the department website under Air Quality Assessmen t/Emission Testing Program. in the technology section. Three minimum one 1 -hour tests , or three minimum 20-minute tests for turbines, shall be performed and the following methods from 40 CFR part 60, appendix A shall be used: 

### The proposed changes are editorial in nature. Fu rthermore, requiring the use of Test Methods from 40 CFR part 60, Appendix A would make the testing provision federally enforceable. This subsection should be approved.

2201.H.1.b.vi.

vi. alternatively to Clauses H.1.b.ii-iv of this Sectio n, the owner or operator may request approval from the administrator for an alternative monitoring plan that uses a fuel-oxygen operating window to demonstratecontinuous compliance of NOx and CO. In order to continuously demonstrate compliance with the NOx limits of Subsection D or E of this Section, the owner or operator shall implement procedures to operate the boiler on or inside fuel and oxygen lines that define the operating window. The corners of the window shall be established during the initial compliance test required by Subsection G of this Section or similar testing at another time. The details for use of an alternative monitoring plan shall be submitted in the permit application or in the optional compliance plan described in Paragraph F.7 of this Section. The plan shall become part of the facility permit a nd shall be federally enforceable. 

### The changes ensure and promote proper operation of the boiler, as defined within its operating window, and as a condition to demonstrate continuous compliance with the NOx limit of Subsection D or E of the rule. Th is subsection should be approved.

2201.H.2.b.vi.

vi. alternatively to Clauses H.2.b.ii-iv of this Sectio n, the owner or operator may request approval from the department for an alternative monitoring plan that uses a fuel-oxygen operating window, or other system, to demonstrate continuous compliance of NOx and CO. In order to continuously demonstrate compliance with the NOx limits of Subsection D or E of this Section, the owner or operator shall implement procedures to operate the boiler on or inside fuel and oxygen lines that define the operating window. The corners of the window shall be established during the initial complian ce test required by Subsection G of this Section or similar testing at another time. The details for use of an alternative monitoring plan shall be submitted in the permit application or in the optional compliance plan described in Paragraph F.7 of this Section. The plan shall become part of the facility permit and shall be federally enforceable. 

### The changes ensure and promote proper operation of the boiler, as defined within its operating window, and as a condition to demonstrate continuous compliance with the NOx limit of Subsection D or E of the rule. Th e revision will also make this subsection consistent with the subsection 2201.H.1.b.vi. above. This subsection should be approved.

2201.H.10.-12.

10. All affected point sources that rely on periodic stack testing to demonstrate continuous compliance and use a catalyst to control NOx emissions shall be tested to show compliance with the emission factors of Subsection D or E of this Section after each occurrence of catalyst repl acement. Portable analyzers shall be acceptable for this check. Documenta tion shall be maintained on-site, if practical, of the date, the person doing the test, and the test results. Documentation shall be made available for inspection upon request. 

### The changes are editorial in nature, and st ate the intended purpose of subsection 2201.H.10. of the rule. This subsection should be approved.

11. The owner or operator of any low ozone season capacity factor boiler or process heater/furnace, as defined in Subsection F of this Section, for which an exemption is granted shall install, calibrate, and maintain a totalizing fuel meter, with instrumentation approved by the department, and keep a record of the fuel input for each affected poin t source during each ozone season. If the average Btu-per-ozone seasonhour is limited, T the owner or operator of any boiler or pr ocess heater/furnace covered under this exemption shall include the noncompliance in the written report that is due in accordance with ParagraphI.2 of this Section. notify the administrative authority within seven days if the Btu

- per

- ozone season limit is exceeded. If the Btu-per-ozone season -hour limit is exceeded, the exem ption shall be permanently withdrawn. Within 90 days after receipt of notification from the administrative authority of the loss of the exemption, the owner or operator shall submit a permit modification detailing how the facility will to meet the applicable emission factor as soon as possible, but no later than 24 months, after exceeding the Btu

- per

ozone season limit. Included with this permit modi fication, the owner or operat or shall submit a schedule of increments of progress for the installation of the required control equipment. This schedule shall be subject to the review and approval of the department. 

### The changes are editorial in natu re, and clarify the intended pur pose of the above subsection. In addition, the change requires an owner or operato r of a boiler or process heater/furnace to submit to LDEQ a written report of its noncompliance for the fuel input requirements. Adoption of the reporting requirement will enhance the Louisian a SIP. This subsection should be approved. 12. The owner or operator of any affect ed point source that is granted an exemption in accordance with Paragraph C.6 of this Section for operating less than 400 hours during the ozone season shall install, calibrate, and maintain a nonresettable, elapsed run-time meter to record the operating time in order to demonstrate compliance during the ozone season . The owner or operator shall notify the admi nistrative authority within seven days if the hours

- per

- ozone season limit is exceeded. If the average operating hours-per-day hour

- per

- ozone season limit is exceeded the owner or operator shall include the noncompliance in the written report that is due in accordance with Paragraph I.2 of this Section.
, If the average operating hours-per-day limit is exceeded, the exemption shall be permanently withdrawn. Within 90 days after receipt of notification from the administrative authority of the loss of the exemption, the owner or operator shall submit a permit modification detailing how to meet the applicable emission factor as soon as possible, but no later than 24 months, after exceeding the limit. Included with this permit modification, the owner or operator shall submit a schedu le of increments of progress for the installation and operation of the required control equipment. This schedule shall be subject to the review and approval of the department. 

### The changes are editorial in natu re, and clarify the intended pu rpose of the above subsection. The change also requires an owner or opera tor to submit to LDEQ a written report of its noncompliance for the fuel input requirements. Adoption of the reporting requirement will enhance the Louisiana SIP. In addition, the change will provide for consistency among this subsection and that of 2201.H.11. This subsection should be approved.

2201.H.13.-15.
13. Elapsed run-time and fuel meter, oxygen, diluents, and CO monitors, and other such instrumentation required by this Section shall be calibrated according to the manufacturer’s recommendations, but not less frequently than once per year. Record s shall be maintained according to Paragraph I.3 of this Section. 

### Subsection 2201.H.13 provides for calibration and proper operation of the monitor. This subsection should be approved.

14. Any unit with a permit requirement or applicable regulation that required more stringent testing than this Chapter requires shall comply with the permit requirements of applicable regulation rather than this Chapter.

### Subsection 2201.H.14 ensures that a source will need to comply with other applicable regulations or permit conditions in case those applicable regulations or permit conditions are more stringent than Chapter 22. This requireme nt prevents possible relaxation of other NOx emission controls. This s ubsection should be approved

15. Continuous demonstration of compliance with fuel, oxygen concentration, and other parameter limits shall be on a 30-day rolling average basis. 

### Use of a 30-day rolling average is an accepted averaging method for NOx rules in order to produce a more replicable emission standard fo r comparison/compliance determination purposes. This subsection should be approved.

2201.I.2.

2. The owner or operator of an affected point source granted an exemption in accordance with any part of Subsection C of this Section or required to demonstrate continuous compliance in accordance with Subsection H of this Section shall submit a writte n report within 90 days of the end of each ozone season q uarter to the administrative authority for any noncompliance of the applicable emission limitations of Subsection D or E of this Section. The required information may be included in reports provided to the administrative authority to meet other requirements, so long as the report meets the deadlines and content requirements of this Paragraph. The report shall include the following information:

a. a description of the noncompliance; b. a statement of the cause of the noncompliance; c. anticipated time that the no ncompliance is expected to continue or, if it has been corrected, the duration of the period of noncompliance; and d. the steps taken to prevent recu rrence of the noncompliance. 

### The changes are editorial in na ture, and clarify the intended purpose of the subsection 2201.I.2

. This subsection should be approved.

2201.J.2. [I don’t see that there is a change to this paragraph.]

2. The owner or operator shall complete all initial compliance testing, specified by Subsection G of this Section, for equipment modified with NOx reduction controls or a NOx monitoring system to meet the provisions of this Chapter within 60 days of achieving normal production rate or after the end of the shake down period, but in no event later than 180 days afte r initial start-up. Required testing to demonstrate the performance of existing, unmodified equipment shall be completed in a timely manner, but by no later than November 1, 2005. 

### No changes are made to subsection 2201.J.2.
2202. Contingency Plan [This is a new section.]

A.This Section shall become effective only in the event that the United States Environmental Protection Agency (EPA) determines and notifies the department in accordance with Section 175A(d) of the Clean Air Section 2301Act as amended [42 USC 7511(b)(2)] that the Baton Rouge area has violated the 8-hour ozone National Ambient Air Quality Standard (NAAQS), and that the department must put this contingency plan into effect.



### Section 175A(d) of the Act concerns contingency provisions necessary to assure State promptly corrects any violation of the NAAQS after the redesignation of the area to attainment. State will need to implement these measures (contingency meas ures), that are contained in the SIP, prior to redesignation of the concerned ar ea to attainment. The reference to 42 USC 7511(b)(2) is correct since Baton Rouge has been an 8-hour ozone nonattainment area Sub section 2202A. provides for applicability of the need to implement a contingency measure in the event the 8-hour ozone NAAQS is violated. within the Baton Rouge area. This subsection should be approved.
B.Definition of Ozone Season . In the event of notification from EPA in accordance with Subsection A of this Section, the definition of ozone season in LAC 33:III.2201.B will be the period April 1 to October 31, inclusive, of each year. 

### As an element of the contingency LDEQ has deci ded to extend the duration of its ozone season from the existing May 1 to September 30 of each calendar year to April 1 st 

### to October 31 st 

### (“inclusive” means that both April 1 st 

### and October 31 st 

### dates are also part of this revised time window). Addition of one month to the beginnin g of the existing ozone season and addition of another month to the end of the existing season will have the intended effect of having more NOx control measures in place for two extra calendar months for the Baton Rouge area; thus potentially reducing the statistica l occurrence of an ozone violat ion in the area since NOx is a precursor to ozone. Stated differently, by introducing the authority of reducing NOx emissions earlier and later in the seas on one could potentially reduce th e number of high ozone days (minimizing the number of violations) in the area. This subsection should be approved. C.Effective Dates. An owner or operator of a source subject to this Chapte r shall comply with this Section as expeditiously as possible, but not later than the first day of the next ozone season after determination and notification by the EPA in accordance with Subsection A of this Section.



### This subsection provides for effective date of triggering the contingenc y measure once the area violates the 8-hour ozone NAAQS. This subsection will make section 2202 enforceable. This section should be approved.

This concludes our section by s ection evaluation of revisions to Chapter 22. Control of Emissions of Nitrogen Oxides (NOx) referre d to as AQ 305, adopted by LDEQ on January 20, 2010.

Conclusion : Based on our evaluation the revision to Chapter 22. Control of Emissions of Nitrogen Oxides (NOx) referred to as AQ 305, adopted by LDEQ on January 20, 2010 should be approved.