From: King.Melanie@epamail.epa.gov Sent: Tuesday, February 08, 2011 1:49 PM To: Matt Todd Cc: horowitz.michael@epamail.epa.gov; Wayland.Robertj@epamail.epa.gov; Westlin.Peter@epamail.epa.gov Subject: RICE NESHAP - proposed amendments Attachments: RICE NESHAP DFRM reg text 2-7-11.pdf
Importance: High

Hi Matt, We thought it would help with the discussion tomorrow if you could see where we are on the changes to the RICE NESHAP in reponse to API et. al.'s request for a stay of §63.6625(b) and (k). We've taken a look at the changes you recommended and considered them in making these revisions. Please take a look at this draft rule language and we can discuss during the meeting tomorrow. There are a few other corrections that we're making in this package, so you'll see those changes reflected here as well. They are as follows:

1) §63.6603(a) should have included a reference to Table 1b. 2) The definition for "spark ignition" is missing the word "with" after the phrase "or any other type of engine . . . ." 3) The introductory text to Tables 1b and 2b should also have contained a reference to §63.6603. 4) Table 5 does not clearly indicate the initial compliance requirements for existing non-emergency stationary engines larger than 500 HP complying with the concentration limit for CO or formaldehyde. Currently the requirements are only provided for existing non-emergency stationary engines larger than 500 HP complying with the % reduction limit for CO or formaldehyde. 5) Item 13.a. in Table 6 should have read “. . . and not using an oxidation catalyst or NSCR,”
(See attached file: RICE NESHAP DFRM reg text 2-7-11.pdf)
Melanie King Energy Strategies Group Sector Policies and Programs Division Office of Air Quality Planning and Standards U.S. Environmental Protection Agency

Mail Code D243-01 RTP, NC 27711

Phone: (919) 541-2469 Fax: (919) 541-5450 king.melanie@epa.govPage 1 of 26

DRAFT – DO NOT CITE OR QUOTE For the reasons stated in the preamble, title 40, chapter I,

part 63 of the Code of Federal Regulations is amended as

follows:

**PART 63--[AMENDED]**

1. The authority citation for part 63 continues to read as

follows:

Authority: 42 U.S.C. 7401, et seq

.
**Subpart ZZZZ--[amended]**

2. Section 63.6603 is amended by revising paragraph (a) to

read as follows:

§63.6603 What emission limitations and operating limitations

must I meet if I own or operate an existing stationary RICE

located at an area source of HAP emissions?

* * * * *

(a) If you own or operate an existing stationary RICE

located at an area source of HAP emissions, you must comply with

the requirements in Table 2d to this subpart and the operating

limitations in Table 1b and Table 2b to this subpart that apply

to you.

* * * * *

3. Section 63.6625 is amended by revising paragraph (b)

and removing paragraph (k) to read as follows:

§63.6625 What are my monitoring, installation, collection,

operation, and maintenance requirements?Page 2 of 26

DRAFT – DO NOT CITE OR QUOTE * * * * *

(b) If you are required to install a continuous parameter

monitoring system (CPMS) as specified in Table 5 of this

subpart, you must install, operate, and maintain each CPMS

according to the requirements in paragraphs (b)(1) through (5)

of this section. For an affected source that is complying with

the emission limitations and operating limitations on [INSERT

DATE OF PUBLICATION IN THE FEDERAL REGISTER], the requirements

in paragraph (b) of this section are effective [INSERT DATE 180

DAYS AFTER PUBLICATION IN THE FEDERAL REGISTER].

(1) You must prepare a site-specific monitoring plan that

addresses the monitoring system design, data collection, and the

quality assurance and quality control elements outlined in

paragraphs (b)(1)(i) through (v) of this section and in

§63.8(d). As specified in §63.8(f)(4), you may request approval

of monitoring system quality assurance and quality control

procedures alternative to those specified in paragraphs (b)(1)

through (5) of this section in your site-specific monitoring

plan.

(i) The performance criteria and design specifications for

the monitoring system equipment, including the sample interface,

detector signal analyzer, and data acquisition and calculations;Page 3 of 26

DRAFT – DO NOT CITE OR QUOTE (ii) Sampling interface (e.g., thermocouple) location such

that the monitoring system will provide representative

measurements;

(iii) Equipment performance evaluations, system accuracy

audits, or other audit procedures;

(iv) Ongoing operation and maintenance procedures in

accordance with provisions in §63.8(c)(1) and (c)(3); and

(v) Ongoing reporting and recordkeeping procedures in

accordance with provisions in §63.10(c), (e)(1), and (e)(2)(i).

(2) You must install, operate, and maintain each CPMS in

continuous operation according to the procedures in your

approved site-specific monitoring plan.

(3) The CPMS must collect data at least once every 15

minutes (see also §63.6635).

(4) For a CPMS for measuring temperature range, the

temperature sensor must have a minimum tolerance of 2.8 degrees

Celsius (5 degrees Fahrenheit) or 1 percent of the measurement

range, whichever is larger.

(5) You must conduct the CPMS equipment performance

evaluation, system accuracy audits, or other audit procedures

specified in your site-specific monitoring plan at least

annually.

(6) You must conduct a performance evaluation of each CPMS

in accordance with your site-specific monitoring plan.Page 4 of 26

DRAFT – DO NOT CITE OR QUOTE * * * * *

4. Section 63.6635 is amended by revising paragraphs (b)

and (c) to read as follows:

§63.6635 How do I monitor and collect data to demonstrate

continuous compliance?

* * * * *

(b) Except for monitor malfunctions, associated repairs,

required performance evaluations, and required quality assurance

or control activities, you must monitor continuously at all

times that the stationary RICE is operating. A monitoring

malfunction is any sudden, infrequent, not reasonably

preventable failure of the monitoring to provide valid data.

Monitoring failures that are caused in part by poor maintenance

or careless operation are not malfunctions.

(c) You may not use data recorded during monitoring

malfunctions, associated repairs, and required quality assurance

or control activities in data averages and calculations used to

report emission or operating levels. You must, however, use all

the valid data collected during all other periods.

* * * * *

5. Section 63.6675 is amended by revising the definition

of Spark ignition to read as follows:

* * * * *Page 5 of 26

DRAFT – DO NOT CITE OR QUOTE Spark ignition means relating to either: A gasoline-fueled

engine; or any other type of engine with a spark plug (or other

sparking device) and with operating characteristics

significantly similar to the theoretical Otto combustion cycle.

Spark ignition engines usually use a throttle to regulate intake

air flow to control power during normal operation. Dual-fuel

engines in which a liquid fuel (typically diesel fuel) is used

for CI and gaseous fuel (typically natural gas) is used as the

primary fuel at an annual average ratio of less than 2 parts

diesel fuel to 100 parts total fuel on an energy equivalent

basis are spark ignition engines.

* * * * *

6. Table 1b to Subpart ZZZZ of Part 63 introductory text

is revised to read as follows:

* * * * *

As stated in §§63.6600, 63.6603, 63.6630 and 63.6640, you must

comply with the following operating limitations for existing,

new and reconstructed 4SRB stationary RICE >500 HP located at a

major source of HAP emissions and existing 4SRB stationary RICE

>500 HP located at an area source of HAP emissions that operate

more than 24 hours per calendar year:

* * * * *

7. Table 2b to Subpart ZZZZ of Part 63 introductory text

is revised to read as follows:Page 6 of 26

DRAFT – DO NOT CITE OR QUOTE * * * * *

As stated in §§63.6600, 63.6601, 63.6603, 63.6630, and 63.6640,

you must comply with the following operating limitations for new

and reconstructed 2SLB and compression ignition stationary RICE

located at a major source of HAP emissions; new and

reconstructed 4SLB stationary RICE ≥ 250 HP located at a major

source of HAP emissions; existing compression ignition

stationary RICE >500 HP; and existing 4SLB stationary RICE >500

HP located at an area source of HAP emissions that operate more

than 24 hours per calendar year **:**

* * * * *

8. Table 5 to Subpart ZZZZ of Part 63 is revised to read

as follows:

**Table 5 to Subpart ZZZZ of Part 63. Initial Compliance with Emission Limitations and Operating Limitations** 

As stated in §§63.6612, 63.6625 and 63.6630, you must initially comply with the emission and operating limitations as required by the following:

**For each . . . Complying with the**  **requirement to . . .**  **You have demonstrated**  **initial compliance if . . .** Page 7 of 26

DRAFT – DO NOT CITE OR QUOTE 1. New orreconstructed nonemergency 2SLB stationary RICE >500 HP located at a major source of HAP, new orreconstructed nonemergency 4SLB stationary RICE ≥ 250 HP located at a major source of HAP, non-emergency stationary CI RICE >500 HP located at a major source ofHAP, existing nonemergency stationary CI RICE >500 HP located at an area source of HAP, and existing non-emergency 4SLB stationary RICE >500 HP located at an area source of HAP that are operated more than 24 hours per calendar year. a. Reduce CO emissions and using oxidation catalyst, and using a CPMS i. The average reduction of emissions of CO determined from the initial performance test achieves the required CO percent reduction; and

ii. You have installed a CPMS to continuously monitor catalyst inlet temperature according to the requirements in §63.6625(b); and

iii. You have recorded the catalyst pressure drop and catalyst inlet temperature during the initial performance test.Page 8 of 26

DRAFT – DO NOT CITE OR QUOTE 2. Non-emergency stationary CI RICE >500 HP located at a major source ofHAP, existing nonemergency stationary CI RICE >500 HP located at an area source of HAP, and existing non-emergency 4SLB stationary RICE >500 HP located at an area source of HAP that are operated more than 24 hours per calendar year. a. Limit the concentration of CO, using oxidation catalyst, and using a CPMS i. The average CO concentration determined from the initial performance test is less than or equal to the CO emission limitation; and

ii. You have installed a CPMS to continuously monitor catalyst inlet temperature according to the requirements in §63.6625(b); and

iii. You have recorded the catalyst pressure drop and catalyst inlet temperature during the initial performance test. 3. New orreconstructed nonemergency 2SLB stationary RICE >500 HP located at a major source of HAP, new orreconstructed nonemergency 4SLB stationary RICE ≥ 250 HP located at a major source of HAP, non-emergency stationary CI RICE >500 HP located at a major source ofHAP, existing nonemergency stationary CI RICE >500 HP located at an area source of HAP, and existing a. Reduce CO emissions and not using oxidation catalyst i. The average reduction of emissions of CO determined from the initial performance test achieves the required CO percent reduction; and

ii. You have installed a CPMS to continuously monitor operating parameters approved by the Administrator (if any) according to the requirements in §63.6625(b); and

iii. You have recorded thePage 9 of 26

DRAFT – DO NOT CITE OR QUOTE non-emergency 4SLB stationary RICE >500 HP located at an area source of HAP that are operated more than 24 hours per calendar year. approved operating parameters (if any) during the initial performance test.

4. Non-emergency stationary CI RICE >500 HP located at a major source ofHAP, existing nonemergency stationary CI RICE >500 HP located at an area source of HAP, and existing non-emergency 4SLB stationary RICE >500 HP located at an area source of HAP that are operated more than 24 hours per calendar year. a. Limit the concentration of CO, and not using oxidation catalyst i. The average CO concentration determined from the initial performance test is less than or equal to the CO emission limitation; and

ii. You have installed a CPMS to continuously monitor operating parameters approved by the Administrator (if any) according to the requirements in §63.6625(b); and

iii. You have recorded the approved operating parameters (if any) during the initial performance test.Page 10 of 26

DRAFT – DO NOT CITE OR QUOTE 5. New orreconstructed nonemergency 2SLB stationary RICE >500 HP located at a major source of HAP, new orreconstructed nonemergency 4SLB stationary RICE ≥ 250 HP located at a major source of HAP, non-emergency stationary CI RICE >500 HP located at a major source ofHAP, existing nonemergency stationary CI RICE >500 HP located at an area source of HAP, and existing non-emergency 4SLB stationary RICE >500 HP located at an area source of HAP that are operated more than 24 hours per calendar year. a. Reduce CO emissions, and using a CEMS i. You have installed a CEMS to continuously monitor CO and either O 2 or CO 2 at both the inlet and outlet of the oxidation catalyst according to the requirements in §63.6625(a); and

ii. You have conducted a performance evaluation of your CEMS using PS 3 and 4A of 40 CFR part 60, appendix B; and

iii. The average reduction of CO calculated using §63.6620 equals or exceeds the required percent reduction. The initial test comprises the first 4-hour period after successful validation of the CEMS. Compliance is based on the average percent reduction achieved during the 4-hour period.Page 11 of 26

DRAFT – DO NOT CITE OR QUOTE 6. Non-emergency stationary CI RICE >500 HP located at a major source ofHAP, existing nonemergency stationary CI RICE >500 HP located at an area source of HAP, and existing non-emergency 4SLB stationary RICE >500 HP located at an area source of HAP that are operated more than 24 hours per calendar year. a. Limit the concentration of CO, and using a CEMS i. You have installed a CEMS to continuously monitor CO and either O 2 or CO 2 at the outlet of the oxidation catalyst according to the requirements in §63.6625(a); and

ii. You have conducted a performance evaluation of your CEMS using PS 3 and 4A of 40 CFR part 60, appendix B; and

iii. The average concentration of CO calculated using §63.6620 is less than or equal to the CO emission limitation. The initial test comprises the first 4-hour period after successful validation of the CEMS. Compliance is based on the average concentration measured during the 4-hour period. 7. Non-emergency 4SRB stationary RICE >500 HP located at a major source of HAP, andexisting nonemergency 4SRB stationary RICE >500 HP located at an area source of a. Reduce formaldehyde emissions a nd using NSCR i. The average reduction of emissions of formaldehyde determined from the initial performance test is equal to or greater than the required formaldehydePage 12 of 26

DRAFT – DO NOT CITE OR QUOTE HAP that are operated more than 24 hours per calendar year. percent reduction; and

ii. You have installed a CPMS to continuously monitor catalyst inlet temperature according to the requirements in §63.6625(b); and

iii. You have recorded the catalyst pressure drop and catalyst inlet temperature during the initial performance test. 8. Non-emergency 4SRB stationary RICE >500 HP located at a major source of HAP, andexisting nonemergency 4SRB stationary RICE >500 HP located at an area source of HAP that are operated more than 24 hours per calendar year. a. Reduce formaldehyde emissions and not using NSCR i. The average reduction of emissions of formaldehyde determined from the initial performance test is equal to or greater than the required formaldehyde percent reduction; and

ii. You have installed a CPMS to continuously monitor operating parameters approved by the Administrator (if any) according to the requirements in §63.6625(b); and

iii. You have recorded the approved operating parameters (if any)Page 13 of 26

DRAFT – DO NOT CITE OR QUOTE during the initial performance test.9. Existing nonemergency 4SRB stationary RICE >500 HP located at an area source of HAP that are operated more than 24 hours per calendar year. a. Limit the concentration of formaldehyde and not using NSCR i. The average formaldehyde concentration determined from the initial performance test is less than or equal to the formaldehyde emission limitation; and and

ii. You have installed a CPMS to continuously monitor operating parameters approved by the Administrator (if any) according to the requirements in §63.6625(b); and

iii. You have recorded the approved operating parameters (if any) during the initial performance test. 10. New orreconstructed nonemergency stationary RICE >500 HP located at a major source of HAP, new orreconstructed nonemergency 4SLB stationary RICE 250 ≤ HP ≤ 500 located at a major source of HAP, andexisting nonemergency 4SRB stationary RICE a. Limit the concentration of formaldehyde i n the stationary RICE exhaust and using oxidation catalyst or NSCR i. The average formaldehyde concentration, corrected to 15 percent O 2 , dry basis, from the three test runs is less than or equal to the formaldehyde emission limitation; and

ii. You have installed a CPMS to continuously monitor catalystPage 14 of 26

DRAFT – DO NOT CITE OR QUOTE >500 HP. inlet temperature according to the requirements in §63.6625(b); and

iii. You have recorded the catalyst pressure drop and catalyst inlet temperature during the initial performance test.
11. New orreconstructed nonemergency stationary RICE >500 HP located at a major source of HAP, new orreconstructed nonemergency 4SLB stationary RICE 250 ≤ HP ≤ 500 located at a major source of HAP, andexisting nonemergency 4SRB stationary RICE >500 HP. a. Limit the concentration of formaldehyde in the stationary RICE exhaust and not using oxidation catalyst or NSCR i. The average formaldehyde concentration, corrected to 15 percent O 2 , dry basis, from the three test runs is less than or equal to the formaldehyde emission limitation; and

ii. You have installed a CPMS to continuously monitor operating parameters approved by the Administrator (if any) according to the requirements in §63.6625(b); and

iii. You have recorded the approved operating parameters (if any) during the initial performance test.12. Existing nonemergency stationary RICE 100 ≤ HP ≤ 500 located at a major source of HAP, and a. Reduce CO or formaldehyde emissions. i. The average reduction of emissions of CO or formaldehyde, as applicable determined from thePage 15 of 26

DRAFT – DO NOT CITE OR QUOTEexisting nonemergency stationary CI RICE 300<HP ≤ 500 located at an area source of HAP. initial performance test is equal to or greater than the required CO or formaldehyde, as applicable, percent reduction.13. Existing nonemergency stationary RICE 100 ≤ HP ≤ 500 located at a major source of HAP, andexisting nonemergency stationary CI RICE 300<HP ≤ 500 located at an area source of HAP. a. Limit the concentration of formaldehyde or CO in the stationary RICE exhaust. i. The average formaldehyde or CO concentration, as applicable, corrected to 15 percent O 2 , dry basis, from the three test runs is less than or equal to the formaldehyde or CO emission limitation, as applicable.

9. Table 6 to Subpart ZZZZ of Part 63 is revised to read

as follows:

**Table 6 to Subpart ZZZZ of Part 63. Continuous Compliance with Emission Limitations, Operating Limitations, Work Practices, and**  **Management Practices**

As stated in §63.6640, you must continuously comply with the emissions and operating limitations and work or management practices as required by the following:

**For each . . . Complying with the**  **requirement to . .**

**. You must**  **demonstrate continuous**  **compliance by**

**. . .**

1. New orreconstructed nonemergency 2SLB stationary RICE >500 HP located at a major source of a. Reduce CO emissions and using an oxidation catalyst, and using a CPMS i. Conducting semiannual performance tests for CO to demonstrate that the required COPage 16 of 26

DRAFT – DO NOT CITE OR QUOTE HAP, new orreconstructed nonemergency 4SLB stationary RICE ≥ 250 HP located at a major source of HAP, and new orreconstructed nonemergency CI stationary RICE >500 HP located at a major source of HAP. percent reduction is achieved a ; and

ii. Collecting the catalyst inlet temperature data according to §63.6625(b); and

i ii. Reducing these data to 4-hour rolling averages; and

i v. Maintaining the 4-hour rolling

a verages within the operating l imitations for the catalyst inlet temperature; and

v. Measuring the pressure drop

a cross the catalyst once per month and demonstrating that the pressure drop

a cross the catalyst is within the operating limitation established during the performance test. 2. New orreconstructed nonemergency 2SLB stationary RICE >500 HP located at a major source of HAP, new orreconstructed nonemergency 4SLB stationary RICE ≥ 250 HP located at a major source of a. Reduce CO emissions and not using an oxidation catalyst, and using a CPMS i. Conducting semiannual performance tests for CO to demonstrate that the required CO percent reduction is achieved a ; and

ii. Collecting the approved operating parameter (if any)Page 17 of 26

DRAFT – DO NOT CITE OR QUOTE HAP, and new orreconstructed nonemergency CI stationary RICE >500 HP located at a major source of HAP. data according to §63.6625(b); and

i ii. Reducing these data to 4-hour rolling averages; and

i v. Maintaining the 4-hour rolling

a verages within the operating l imitations for the operating parameters established during the performance test. 3. New orreconstructed nonemergency 2SLB stationary RICE >500 HP located at a major source of HAP, new orreconstructed nonemergency 4SLB stationary RICE ≥ 250 HP located at a major source of HAP, new orreconstructed nonemergency stationary CI RICE >500 HP located at a major source ofHAP, existing nonemergency stationary CI RICE >500 HP, existing non-emergency 4SLB stationary RICE >500 HP located at an area source of HAP that are operated more than 24 hours per a. Reduce CO emissions or limit the concentration of CO in the stationary RICE exhaust, and using a CEMS i. Collecting the monitoring data according to §63.6625(a), reducing the measurements to 1- hour averages, calculating the percent reduction or concentration of CO emissions according to §63.6620; and

ii. Demonstrating that the catalyst achieves the required percent reduction of CO emissions over the 4-hour averaging period, o r that the emission remain at or below the CO concentration limit; and

iii. Conducting an

a nnual RATA of yourPage 18 of 26

DRAFT – DO NOT CITE OR QUOTE calendar year. C EMS using PS 3 and 4A of 40 CFR part 60, appendix B, as well as daily and periodic data quality checks in accordance with 40 CFR part 60, appendix F, procedure 1. 4. Non-emergency 4SRB stationary RICE >500 HP located at a major source of HAP. a. Reduce formaldehyde emissions a nd using NSCR i. Collecting the catalyst inlet temperature data according to §63.6625(b); and

ii. reducing these data to 4-hour rolling averages; and

iii. Maintaining the 4-hour rolling

a verages within the operating l imitations for the catalyst inlet temperature; and

iv. Measuring the pressure drop

a cross the catalyst once per month and demonstrating that the pressure drop

a cross the catalyst is within the operating limitation established during the performance test. 5. Non-emergency 4SRB stationary RICE >500 HP located at a major source of HAP. a. Reduce formaldehyde emissions and not using NSCR i. Collecting the approved operating parameter (if any) data according to §63.6625(b); andPage 19 of 26

DRAFT – DO NOT CITE OR QUOTE ii. Reducing these data to 4-hour rolling averages; and

iii. Maintaining the 4-hour rolling

a verages within the operating l imitations for the operating parameters established during the performance test. 6. Non-emergency 4SRB stationary RICE with a brake HP ≥ 5,000 located at a major source of HAP. a. Reduce formaldehyde emissions Conducting semiannual performance tests f or formaldehyde to demonstrate that the required formaldehyde percent reduction is achieved a

. 7. New orreconstructed nonemergency stationary RICE >500 HP located at a major source of HAP and new orreconstructed nonemergency 4SLB stationary RICE 250 ≤ HP ≤ 500 located at a major source of HAP. a. Limit the concentration of formaldehyde i n the stationary RICE exhaust and using oxidation catalyst or NSCR i. Conducting semiannual performance tests for f ormaldehyde to demonstrate that your emissions remain at or below the formaldehyde concentration limit a ; and

ii. Collecting the catalyst inlet temperature data according to §63.6625(b); and

i ii. Reducing these data to 4-hour rolling averages; andPage 20 of 26

DRAFT – DO NOT CITE OR QUOTE i v. Maintaining the 4-hour rolling

a verages within the operating l imitations for the catalyst inlet temperature; and

v. Measuring the pressure drop

a cross the catalyst once per month and demonstrating that the pressure drop

a cross the catalyst is within the operating limitation established during the performance test. 8. New orreconstructed nonemergency stationary RICE >500 HP located at a major source of HAP and new orreconstructed nonemergency 4SLB stationary RICE 250 ≤ HP ≤ 500 located at a major source of HAP. a. Limit the concentration of formaldehyde in the stationary RICE exhaust and not using oxidation catalyst or NSCR i. Conducting semiannual performance tests f or formaldehyde to demonstrate that your emissions remain at or below the formaldehyde concentration limit a ; and

ii. Collecting the approved operating parameter (if any) data according to §63.6625(b); and

i ii. Reducing these data to 4-hour rolling averages; and

i v. Maintaining the 4-hour rolling

a verages within the operatingPage 21 of 26

DRAFT – DO NOT CITE OR QUOTE limitations for the operating parameters established during the performance test. 9. Existing emergency and black start stationary RICE ≤ 500 HP located at a major source ofHAP, existing nonemergency stationary RICE <100 HP located at a major source of HAP, existing emergency and black start stationary RICE located at an area source of HAP,existing nonemergency stationary CI RICE ≤ 300 HP located at an area source ofHAP, existing nonemergency 2SLB stationary RICE located at an area source of HAP,existing nonemergency landfill or digester gas stationary SI RICE located at an area source of HAP,existing nonemergency 4SLB and 4SRB stationary RICE ≤ 500 HP located at an area source of HAP,existing nonemergency 4SLB and a. Work or Management practices. i. Operating and maintaining the stationary RICE according to the manufacturer’s emission-related operation and maintenance instructions;

or
ii. Develop and follow your own maintenance plan which must provide to the extent p racticable for the maintenance and operation of the engine in a manner consistent with good air pollution control practice for minimizing emissions.Page 22 of 26

DRAFT – DO NOT CITE OR QUOTE 4SRB stationary RICE >500 HP located at an area source of HAP that operate 24 hours or less per calendar year. 10. Existing stationary CI RICE >500 HP that are not limited use stationary RICE, and existing 4SLB and 4SRB stationary RICE >500 HP located at an area source of HAP that operate more than 24 hours per calendar year and are not limited use stationary RICE. a. Reduce CO or formaldehyde emissions, or l i mit the concentration of formaldehyde or CO in the stationary RICE exhaust, and using oxidation catalyst or NSCR i. Conducting performance tests every 8,760 hours or 3 years, whichever comes first, for CO or formaldehyde, as appropriate, to demonstrate that the required CO or formaldehyde, as appropriate, percent reduction is achieved or that your emissions remain at or below the CO or formaldehyde concentration limit; and

ii. Collecting the catalyst inlet temperature data according to §63.6625(b); and

i ii. Reducing these data to 4-hour rolling averages; and

i v. Maintaining the 4-hour rolling

a verages within the operating l imitations for the catalyst inlet temperature; andPage 23 of 26

DRAFT – DO NOT CITE OR QUOTE v. Measuring the pressure drop

a cross the catalyst once per month and demonstrating that the pressure drop

a cross the catalyst is within the operating limitation established during the performance test. 11. Existing stationary CI RICE >500 HP that are not limited use stationary RICE, and existing 4SLB and 4SRB stationary RICE >500 HP located at an area source of HAP that that operate more than 24 hours per calendar year and are not limited use stationary RICE. a. Reduce CO or formaldehyde emissions, or l i mit the concentration of formaldehyde or CO in the stationary RICE exhaust, and not using oxidation catalyst or NSCR i. Conducting performance tests every 8,760 hours or 3 years, whichever comes first, for CO or formaldehyde, as appropriate, to demonstrate that the required CO or formaldehyde, as appropriate, percent reduction is achieved or that your emissions remain at or below the CO or formaldehyde concentration limit; and

ii. Collecting the approved operating parameter (if any) data according to §63.6625(b); and

i ii. Reducing these data to 4-hour rolling averages; and

i v. Maintaining the 4-hour rollingPage 24 of 26

DRAFT – DO NOT CITE OR QUOTE a verages within the operating l imitations for the operating parameters established during the performance test. 12. Existing limited use CI stationary RICE >500 HP and existing limited use 4SLB and 4SRB stationary RICE >500 HP located at an area source of HAP that operate more than 24 hours per calendar year. a. Reduce CO or formaldehyde emissions or limit the concentration of formaldehyde or CO in the stationary RICE exhaust, and using an oxidation catalyst or NSCR i. Conducting performance tests every 8,760 hours or 5 years, whichever comes first, for CO or formaldehyde, as appropriate, to demonstrate that the required CO or formaldehyde, as appropriate, percent reduction is achieved or t hat your emissions remain at or below the CO or formaldehyde concentration limit; and

ii. Collecting the catalyst inlet temperature data according to §63.6625(b); and

i ii. Reducing these data to 4-hour rolling averages; and

i v. Maintaining the 4-hour rolling

a verages within the operating l imitations for the catalyst inlet temperature; andPage 25 of 26

DRAFT – DO NOT CITE OR QUOTE v. Measuring the pressure drop

a cross the catalyst once per month and demonstrating that the pressure drop

a cross the catalyst is within the operating limitation established during the performance test. 13. Existing limited use CI stationary RICE >500 HP and existing limited use 4SLB and 4SRB stationary RICE >500 HP located at an area source of HAP that operate more than 24 hours per calendar year. a. Reduce CO or formaldehyde emissions or limit the concentration of formaldehyde or CO in the stationary RICE exhaust, and not using an oxidation catalyst or NSCR i. Conducting performance tests every 8,760 hours or 5 years, whichever comes first, for CO or formaldehyde, as appropriate, to demonstrate that the required CO or formaldehyde, as appropriate, percent reduction is achieved or t hat your emissions remain at or below the CO or formaldehyde concentration limit; and

ii. Collecting the approved operating parameter (if any) data according to §63.6625(b); and

i ii. Reducing these data to 4-hour rolling averages; and

i v. Maintaining thePage 26 of 26

DRAFT – DO NOT CITE OR QUOTE 4-hour rolling

a verages within the operating l imitations for the operating parameters established during the performance test.

a After you have demonstrated compliance for two consecutive tests, you may reduce the frequency of subsequent performance tests to annually. If the results of any subsequent annual performance test indicate the stationary RICE is not in compliance with the CO or formaldehyde emission limitation, or you deviate from any of your operating limitations, you must resume semiannual performance tests.