[Federal Register Volume 84, Number 82 (Monday, April 29, 2019)]
[Notices]
[Pages 18023-18024]
[FR Doc No: 2019-08510]

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ENVIRONMENTAL PROTECTION AGENCY

[EPA-HQ-OECA-2012-0517; FRL--9991-90-OMS]

Information Collection Request Submitted to OMB for Review and
Approval; Comment Request; Emission Guidelines and Compliance Times for
Small Municipal Waste Combustion Units Constructed on or Before August
30, 1999 (Renewal)

AGENCY: Environmental Protection Agency (EPA).

ACTION: Notice.

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SUMMARY: The Environmental Protection Agency (EPA) has submitted an
information collection request (ICR), Emission Guidelines and
Compliance Times for Small Municipal Waste Combustion Units Constructed
on or Before August 30, 1999 (EPA ICR No. 1901.07, OMB Control No.
2060-0424), to the Office of Management and Budget (OMB) for review and
approval in accordance with the Paperwork Reduction Act. This is a
proposed extension of the ICR, which is currently approved through
April 30, 2019. Public comments were previously requested, via the
Federal Register, on May 30, 2018 during a 60-day comment period. This
notice allows for an additional 30 days for public comments. A fuller
description of the ICR is given below, including its estimated burden
and cost to the public. An agency may neither conduct nor sponsor, and
a person is not required to respond to, a collection of information
unless it displays a currently valid OMB control number.

DATES: Additional comments may be submitted on or before May 29, 2019.

ADDRESSES: Submit your comments, referencing Docket ID Number EPA-HQ-
OECA-2012-0517, to: (1) EPA online using www.regulations.gov (our
preferred method), or by email to [email protected], or by mail to:
EPA Docket Center, Environmental Protection Agency, Mail Code 28221T,
1200 Pennsylvania Ave. NW, Washington, DC 20460; and (2) OMB via email
to [email protected]. Address comments to OMB Desk Officer
for EPA.
    EPA's policy is that all comments received will be included in the
public docket without change, including any personal information
provided, unless the comment includes profanity, threats, information
claimed to be Confidential Business Information (CBI), or other
information whose disclosure is restricted by statute.

FOR FURTHER INFORMATION CONTACT: Patrick Yellin, Monitoring,
Assistance, and Media Programs Division, Office of Compliance, Mail
Code 2227A, Environmental Protection Agency, 1200 Pennsylvania Ave. NW,
Washington, DC 20460; telephone number:<PHONE_NUMBER>; fax number:
(202) 564-0050; email address: [email protected].

SUPPLEMENTARY INFORMATION: Supporting documents, which explain in
detail the information that the EPA will be collecting, are available
in the public docket for this ICR. The docket can be viewed online at
www.regulations.gov, or in person at the EPA Docket Center, WJC West,
Room 3334, 1301 Constitution Ave. NW, Washington, DC. The telephone
number for the Docket Center is<PHONE_NUMBER>. For additional
information about EPA's public docket, visit: http://www.epa.gov/dockets.
    Abstract: The Emission Guidelines and Compliance Times for Small
Municipal Waste Combustion Units Constructed on or Before August 30,
1999 were originally promulgated in December 1995, but were vacated by
the Federal Court in March 1997. Subsequently, the Emission Guidelines
were re-proposed on August 30, 1999, and promulgated on December 6,
2000. The Emission Guidelines regulate organics (dioxin/furans), metals
(cadmium, lead, mercury), particulate matter, and acid gases (hydrogen
chloride, sulfur dioxide, and nitrogen oxides) for small Municipal
Waste Combustion (MWC) units. Small MWC units are MWC units with
capacities to combust greater than 35 tons per day (tpd) and less than
250 tons per day (tpd) of municipal solid waste. The Emission
Guidelines contain monitoring, reporting, and recordkeeping
requirements that are to be included in state plans. This Information
Collection Request (ICR) identifies the burden for States and U.S.
territories to develop and implement State plans, and the burden for
small MWCs imposed by these State plans. This information is being
collected to assure compliance with 40 CFR part 60, subpart BBBB.
    In general, all Emission Guidelines require initial notifications,
performance tests, and periodic reports by the owners/operators of the
affected facilities. They are also required to maintain records of the
occurrence and duration of any startup, shutdown, or malfunction in the
operation of an affected facility, or any period during which the
monitoring system is inoperative. These notifications, reports, and
records are essential in determining compliance, and are required of
all

affected facilities subject to Emission Guidelines.
    Form Numbers: None.
    Respondents/affected entities: Small municipal waste combustors
(MWCs).
    Respondent's obligation to respond: Mandatory (40 CFR part 60,
subpart BBBB).
    Estimated number of respondents: 23 (total).
    Frequency of response: Initially, annually, and semiannually.
    Total estimated burden: 102,000 hours (per year). Burden is defined
at 5 CFR 1320.3(b).
    Total estimated cost: $11,500,000 (per year), which includes
$1,040,000 in annualized capital/startup and/or operation & maintenance
costs.
    Changes in the Estimates: There is no change in the total labor
hours in this ICR compared to the previous ICR.

Courtney Kerwin,
Director, Regulatory Support Division.
[FR Doc. 2019-08510 Filed 4-26-19; 8:45 am]
 BILLING CODE 6560-50-P


emergency stationary CI RICE >500 HP located                                     catalyst inlet temperature
 at an area source of HAP.                                                        according to the requirements
                                                                                in Sec.   63.6625(b); and
                                                                                iii. You have recorded the
                                                                                catalyst pressure drop and
                                                                                catalyst inlet temperature
                                                                                during the initial performance
                                                                                test.
----------------------------------------------------------------------------------------------------------------
2. Non-emergency stationary CI RICE >500 HP    a. Limit the concentration of     i. The average CO concentration
 located at a major source of HAP, and          CO, using oxidation catalyst,     determined from the initial
 existing non-emergency stationary CI RICE      and using a CPMS.                 performance test is less than
 >500 HP located at an area source of HAP.                                        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 Sec.   63.6625(b); and
                                                                                iii. You have recorded the
                                                                                catalyst pressure drop and
                                                                                catalyst inlet temperature
                                                                                during the initial performance
                                                                                test.
----------------------------------------------------------------------------------------------------------------
3. New or reconstructed non-emergency 2SLB     a. Reduce CO emissions and not    i. The average reduction of
 stationary RICE >500 HP located at a major     using oxidation catalyst.         emissions of CO determined
 source of HAP, new or reconstructed non-                                         from the initial performance
 emergency 4SLB stationary RICE >=250 HP                                          test achieves the required CO
 located at a major source of HAP, non-                                           percent reduction; and
 emergency stationary CI RICE >500 HP located                                    ii. You have installed a CPMS
 at a major source of HAP, and existing non-                                      to continuously monitor
 emergency stationary CI RICE >500 HP located                                     operating parameters approved
 at an area source of HAP.                                                        by the Administrator (if any)
                                                                                according to the requirements
                                                                                in Sec.   63.6625(b); and
                                                                                iii. You have recorded the
                                                                                approved operating parameters
                                                                                (if any) during the initial
                                                                                performance test.
----------------------------------------------------------------------------------------------------------------
4. Non-emergency stationary CI RICE >500 HP    a. Limit the concentration of     i. The average CO concentration
 located at a major source of HAP, and          CO, and not using oxidation       determined from the initial
 existing non-emergency stationary CI RICE      catalyst.                         performance test is less than
 >500 HP located at an area source of HAP.                                        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 Sec.   63.6625(b); and
                                                                                iii. You have recorded the
                                                                                approved operating parameters
                                                                                (if any) during the initial
                                                                                performance test.
----------------------------------------------------------------------------------------------------------------

5. New or reconstructed non-emergency 2SLB     a. Reduce CO emissions, and       i. You have installed a CEMS to
 stationary RICE >500 HP located at a major     using a CEMS.                     continuously monitor CO and
 source of HAP, new or reconstructed non-                                         either O2 or CO2 at both the
 emergency 4SLB stationary RICE >=250 HP                                          inlet and outlet of the
 located at a major source of HAP, non-                                           oxidation catalyst according
 emergency stationary CI RICE >500 HP located                                     to the requirements in Sec.
 at a major source of HAP, and existing non-                                      63.6625(a); and
 emergency stationary CI RICE >500 HP located                                    ii. You have conducted a
 at an area source of HAP.                                                        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 Sec.
                                                                                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.
----------------------------------------------------------------------------------------------------------------
6. Non-emergency stationary CI RICE >500 HP    a. Limit the concentration of     i. You have installed a CEMS to
 located at a major source of HAP, and          CO, and using a CEMS.             continuously monitor CO and
 existing non-emergency stationary CI RICE                                        either O2 or CO2 at the outlet
 >500 HP located at an area source of HAP.                                        of the oxidation catalyst
                                                                                according to the requirements
                                                                                in Sec.   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 Sec.
                                                                                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  a. Reduce formaldehyde emissions  i. The average reduction of
 located at a major source of HAP.              and using NSCR.                   emissions of formaldehyde
                                                                                determined from the initial
                                                                                performance test is equal to
                                                                                or greater than the required
                                                                                formaldehyde percent
                                                                                reduction, or the average
                                                                                reduction of emissions of THC
                                                                                determined from the initial
                                                                                performance test is equal to
                                                                                or greater than 30 percent;
                                                                                and
                                                                                ii. You have installed a CPMS
                                                                                to continuously monitor
                                                                                catalyst inlet temperature
                                                                                according to the requirements
                                                                                in Sec.   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  a. Reduce formaldehyde emissions  i. The average reduction of
 located at a major source of HAP.              and not using NSCR.               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 Sec.   63.6625(b); and
                                                                                iii. You have recorded the
                                                                                approved operating parameters
                                                                                (if any) during the initial
                                                                                performance test.
----------------------------------------------------------------------------------------------------------------
9. New or reconstructed non-emergency          a. Limit the concentration of     i. The average formaldehyde
 stationary RICE >500 HP located at a major     formaldehyde in the stationary    concentration, corrected to 15
 source of HAP, new or reconstructed non-       RICE exhaust and using            percent O2, dry basis, from
 emergency 4SLB stationary RICE 250<=HP<=500    oxidation catalyst or NSCR.       the three test runs is less
 located at a major source of HAP, and                                            than or equal to the
 existing non-emergency 4SRB stationary RICE                                      formaldehyde emission
 >500 HP located at a major source of HAP.                                        limitation; and
                                                                                ii. You have installed a CPMS
                                                                                to continuously monitor
                                                                                catalyst inlet temperature
                                                                                according to the requirements
                                                                                in Sec.   63.6625(b); and

                                                                                iii. You have recorded the
                                                                                catalyst pressure drop and
                                                                                catalyst inlet temperature
                                                                                during the initial performance
                                                                                test.
----------------------------------------------------------------------------------------------------------------
10. New or reconstructed non-emergency         a. Limit the concentration of     i. The average formaldehyde
 stationary RICE >500 HP located at a major     formaldehyde in the stationary    concentration, corrected to 15
 source of HAP, new or reconstructed non-       RICE exhaust and not using        percent O2, dry basis, from
 emergency 4SLB stationary RICE 250<=HP<=500    oxidation catalyst or NSCR.       the three test runs is less
 located at a major source of HAP, and                                            than or equal to the
 existing non-emergency 4SRB stationary RICE                                      formaldehyde emission
 >500 HP located at a major source of HAP.                                        limitation; and
                                                                                ii. You have installed a CPMS
                                                                                to continuously monitor
                                                                                operating parameters approved
                                                                                by the Administrator (if any)
                                                                                according to the requirements
                                                                                in Sec.   63.6625(b); and
                                                                                iii. You have recorded the
                                                                                approved operating parameters
                                                                                (if any) during the initial
                                                                                performance test.
----------------------------------------------------------------------------------------------------------------
11. Existing non-emergency stationary RICE     a. Reduce CO emissions..........  i. The average reduction of
 100<=HP<=500 located at a major source of                                        emissions of CO or
 HAP, and existing non-emergency stationary                                       formaldehyde, as applicable
 CI RICE 300<=HP<=500 located at an area                                          determined from the initial
 source of HAP.                                                                   performance test is equal to
                                                                                or greater than the required
                                                                                CO or formaldehyde, as
                                                                                applicable, percent reduction.
----------------------------------------------------------------------------------------------------------------
12. Existing non-emergency stationary RICE     a. Limit the concentration of     i. The average formaldehyde or
 100<=HP<=500 located at a major source of      formaldehyde or CO in the         CO concentration, as
 HAP, and existing non-emergency stationary     stationary RICE exhaust.          applicable, corrected to 15
 CI RICE 300<=HP<=500 located at an area                                          percent O2, dry basis, from
 source of HAP.                                                                   the three test runs is less
                                                                                than or equal to the
                                                                                formaldehyde or CO emission
                                                                                limitation, as applicable.
----------------------------------------------------------------------------------------------------------------
13. Existing non-emergency 4SLB stationary     a. Install an oxidation catalyst  i. You have conducted an
 RICE >500 HP located at an area source of                                        initial compliance
 HAP that are not remote stationary RICE and                                      demonstration as specified in
 that are operated more than 24 hours per                                         Sec.   63.6630(e) to show that
 calendar year.                                                                   the average reduction of
                                                                                emissions of CO is 93 percent
                                                                                or more, or the average CO
                                                                                concentration is less than or
                                                                                equal to 47 ppmvd at 15
                                                                                percent O2.
                                                                                ii. You have installed a CPMS
                                                                                to continuously monitor
                                                                                catalyst inlet temperature
                                                                                according to the requirements
                                                                                in Sec.   63.6625(b), or you
                                                                                have installed equipment to
                                                                                automatically shut down the
                                                                                engine if the catalyst inlet
                                                                                temperature exceeds 1350
                                                                                [deg]F.
----------------------------------------------------------------------------------------------------------------
14. Existing non-emergency 4SRB stationary     a. Install NSCR.................  i. You have conducted an
 RICE >500 HP located at an area source of                                        initial compliance
 HAP that are not remote stationary RICE and                                      demonstration as specified in
 that are operated more than 24 hours per                                         Sec.   63.6630(e) to show that
 calendar year.                                                                   the average reduction of
                                                                                emissions of CO is 75 percent
                                                                                or more, or the average
                                                                                reduction of emissions of THC
                                                                                is 30 percent or more.
                                                                                ii. You have installed a CPMS
                                                                                to continuously monitor
                                                                                catalyst inlet temperature
                                                                                according to the requirements
                                                                                in Sec.   63.6625(b), or you
                                                                                have installed equipment to
                                                                                automatically shut down the
                                                                                engine if the catalyst inlet
                                                                                temperature exceeds 1250
                                                                                [deg]F.
----------------------------------------------------------------------------------------------------------------

    29. Table 6 to Subpart ZZZZ of Part 63 is revised to read as
follows:
    As stated in Sec.  63.6640, you must continuously comply with the
emissions and operating limitations and work or management practices as
required by the following:

Table 6 to Subpart ZZZZ of Part 63--Continuous Compliance With Emission Limitations, Operating Limitations, Work
                                       Practices, and Management Practices
----------------------------------------------------------------------------------------------------------------
                                                Complying with the requirement   You must demonstrate continuous
                For each . . .                             to . . .                    compliance by . . .
----------------------------------------------------------------------------------------------------------------
1. New or reconstructed non-emergency 2SLB     a. Reduce CO emissions and using  i. Conducting semiannual
 stationary RICE >500 HP located at a major     an oxidation catalyst, and        performance tests for CO to
 source of HAP, new or reconstructed non-       using a CPMS.                     demonstrate that the required
 emergency 4SLB stationary RICE >=250 HP                                          CO percent reduction is
 located at a major source of HAP, and new or                                     achieved; \a\ and
 reconstructed non-emergency CI stationary                                       ii. Collecting the catalyst
 RICE >500 HP located at a major source of                                        inlet temperature data
 HAP.                                                                             according to Sec.
                                                                                63.6625(b); and
                                                                                iii. Reducing these data to 4-
                                                                                hour rolling averages; and
                                                                                iv. Maintaining the 4-hour
                                                                                rolling averages within the
                                                                                operating limitations for the
                                                                                catalyst inlet temperature;
                                                                                and
                                                                                v. Measuring the pressure drop
                                                                                across the catalyst once per
                                                                                month and demonstrating that
                                                                                the pressure drop across the
                                                                                catalyst is within the
                                                                                operating limitation
                                                                                established during the
                                                                                performance test.
----------------------------------------------------------------------------------------------------------------
2. New or reconstructed non-emergency 2SLB     a. Reduce CO emissions and not    i. Conducting semiannual
 stationary RICE >500 HP located at a major     using an oxidation catalyst,      performance tests for CO to
 source of HAP, new or reconstructed non-       and using a CPMS.                 demonstrate that the required
 emergency 4SLB stationary RICE >=250 HP                                          CO percent reduction is
 located at a major source of HAP, and new or                                     achieved; \a\ and
 reconstructed non-emergency CI stationary                                       ii. Collecting the approved
 RICE >500 HP located at a major source of                                        operating parameter (if any)
 HAP.                                                                             data according to Sec.
                                                                                63.6625(b); and
                                                                                iii. Reducing these data to 4-
                                                                                hour rolling averages; and
                                                                                iv. Maintaining the 4-hour
                                                                                rolling averages within the
                                                                                operating limitations for the
                                                                                operating parameters
                                                                                established during the
                                                                                performance test.
----------------------------------------------------------------------------------------------------------------
3. New or reconstructed non-emergency 2SLB     a. Reduce CO emissions or limit   i. Collecting the monitoring
 stationary RICE >500 HP located at a major     the concentration of CO in the    data according to Sec.
 source of HAP, new or reconstructed non-       stationary RICE exhaust, and      63.6625(a), reducing the
 emergency 4SLB stationary RICE >=250 HP        using a CEMS.                     measurements to 1-hour
 located at a major source of HAP, new or                                         averages, calculating the
 reconstructed non-emergency stationary CI                                        percent reduction or
 RICE >500 HP located at a major source of                                        concentration of CO emissions
 HAP, and existing non-emergency stationary                                       according to Sec.   63.6620;
 CI RICE >500 HP.                                                                 and
                                                                                ii. Demonstrating that the
                                                                                catalyst achieves the required
                                                                                percent reduction of CO
                                                                                emissions over the 4-hour
                                                                                averaging period, or that the
                                                                                emission remain at or below
                                                                                the CO concentration limit;
                                                                                and
                                                                                iii. Conducting an annual RATA
                                                                                of your CEMS 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  a. Reduce formaldehyde emissions  i. Collecting the catalyst
 located at a major source of HAP.              and using NSCR.                   inlet temperature data
                                                                                according to Sec.
                                                                                63.6625(b); and
                                                                                ii. reducing these data to 4-
                                                                                hour rolling averages; and
                                                                                iii. Maintaining the 4-hour
                                                                                rolling averages within the
                                                                                operating limitations for the
                                                                                catalyst inlet temperature;
                                                                                and
                                                                                iv. Measuring the pressure drop
                                                                                across the catalyst once per
                                                                                month and demonstrating that
                                                                                the pressure drop across the
                                                                                catalyst is within the
                                                                                operating limitation
                                                                                established during the
                                                                                performance test.
----------------------------------------------------------------------------------------------------------------
5. Non-emergency 4SRB stationary RICE >500 HP  a. Reduce formaldehyde emissions  i. Collecting the approved
 located at a major source of HAP.              and not using NSCR.               operating parameter (if any)
                                                                                data according to Sec.
                                                                                63.6625(b); and
                                                                                ii. Reducing these data to 4-
                                                                                hour rolling averages; and
                                                                                iii. Maintaining the 4-hour
                                                                                rolling averages within the
                                                                                operating limitations for the
                                                                                operating parameters
                                                                                established during the
                                                                                performance test.
----------------------------------------------------------------------------------------------------------------

6. Non-emergency 4SRB stationary RICE with a   a. Reduce formaldehyde emissions  Conducting semiannual
 brake HP >=5,000 located at a major source                                       performance tests for
 of HAP.                                                                          formaldehyde to demonstrate
                                                                                that the required formaldehyde
                                                                                percent reduction is achieved,
                                                                                or to demonstrate that the
                                                                                average reduction of emissions
                                                                                of THC determined from the
                                                                                performance test is equal to
                                                                                or greater than 30 percent.\a\
----------------------------------------------------------------------------------------------------------------
7. New or reconstructed non-emergency          a. Limit the concentration of     i. Conducting semiannual
 stationary RICE >500 HP located at a major     formaldehyde in the stationary    performance tests for
 source of HAP and new or reconstructed non-    RICE exhaust and using            formaldehyde to demonstrate
 emergency 4SLB stationary RICE 250<=HP<=500    oxidation catalyst or NSCR.       that your emissions remain at
 located at a major source of HAP.                                                or below the formaldehyde
                                                                                concentration limit; \a\ and
                                                                                ii. Collecting the catalyst
                                                                                inlet temperature data
                                                                                according to Sec.
                                                                                63.6625(b); and
                                                                                iii. Reducing these data to 4-
                                                                                hour rolling averages; and
                                                                                iv. Maintaining the 4-hour
                                                                                rolling averages within the
                                                                                operating limitations for the
                                                                                catalyst inlet temperature;
                                                                                and
                                                                                v. Measuring the pressure drop
                                                                                across the catalyst once per
                                                                                month and demonstrating that
                                                                                the pressure drop across the
                                                                                catalyst is within the
                                                                                operating limitation
                                                                                established during the
                                                                                performance test.
----------------------------------------------------------------------------------------------------------------
8. New or reconstructed non-emergency          a. Limit the concentration of     i. Conducting semiannual
 stationary RICE >500 HP located at a major     formaldehyde in the stationary    performance tests for
 source of HAP and new or reconstructed non-    RICE exhaust and not using        formaldehyde to demonstrate
 emergency 4SLB stationary RICE 250<=HP<=500    oxidation catalyst or NSCR.       that your emissions remain at
 located at a major source of HAP.                                                or below the formaldehyde
                                                                                concentration limit; \a\ and
                                                                                ii. Collecting the approved
                                                                                operating parameter (if any)
                                                                                data according to Sec.
                                                                                63.6625(b); and
                                                                                iii. Reducing these data to 4-
                                                                                hour rolling averages; and
                                                                                iv. Maintaining the 4-hour
                                                                                rolling averages within the
                                                                                operating limitations for the
                                                                                operating parameters
                                                                                established during the
                                                                                performance test.
----------------------------------------------------------------------------------------------------------------
9. Existing emergency and black start          a. Work or Management practices.  i. Operating and maintaining
 stationary RICE <=500 HP located at a major                                      the stationary RICE according
 source of HAP, existing non-emergency                                            to the manufacturer's emission-
 stationary RICE <100 HP located at a major                                       related operation and
 source of HAP, existing emergency and black                                      maintenance instructions; or
 start stationary RICE located at an area                                        ii. Develop and follow your own
 source of HAP, existing non-emergency                                            maintenance plan which must
 stationary CI RICE <=300 HP located at an                                        provide to the extent
 area source of HAP, existing non-emergency                                       practicable for the
 2SLB stationary RICE located at an area                                          maintenance and operation of
 source of HAP, existing non-emergency                                            the engine in a manner
 stationary SI RICE located at an area source                                     consistent with good air
 of HAP which combusts landfill or digester                                       pollution control practice for
 gas equivalent to 10 percent or more of the                                      minimizing emissions.
 gross heat input on an annual basis,
 existing non-emergency 4SLB and 4SRB
 stationary RICE <=500 HP located at an area
 source of HAP, existing non-emergency 4SLB
 and 4SRB stationary RICE >500 HP located at
 an area source of HAP that operate 24 hours
 or less per calendar year, and existing non-
 emergency 4SLB and 4SRB stationary RICE >500
 HP located at an area source of HAP that are
 remote stationary RICE.
----------------------------------------------------------------------------------------------------------------

10. Existing stationary CI RICE >500 HP that   a. Reduce CO emissions, or limit  i. Conducting performance tests
 are not limited use stationary RICE.           the concentration of CO in the    every 8,760 hours or 3 years,
                                                stationary RICE exhaust, and      whichever comes first, for CO
                                                using oxidation catalyst.         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 Sec.
                                                                                63.6625(b); and
                                                                                iii. Reducing these data to 4-
                                                                                hour rolling averages; and
                                                                                iv. Maintaining the 4-hour
                                                                                rolling averages within the
                                                                                operating limitations for the
                                                                                catalyst inlet temperature;
                                                                                and
                                                                                v. Measuring the pressure drop
                                                                                across the catalyst once per
                                                                                month and demonstrating that
                                                                                the pressure drop across the
                                                                                catalyst is within the
                                                                                operating limitation
                                                                                established during the
                                                                                performance test.
----------------------------------------------------------------------------------------------------------------
11. Existing stationary CI RICE >500 HP that   a. Reduce CO emissions, or limit  i. Conducting performance tests
 are not limited use stationary RICE.           the concentration of CO in the    every 8,760 hours or 3 years,
                                                stationary RICE exhaust, and      whichever comes first, for CO
                                                not using oxidation catalyst.     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 Sec.
                                                                                63.6625(b); and
                                                                                iii. Reducing these data to 4-
                                                                                hour rolling averages; and
                                                                                iv. Maintaining the 4-hour
                                                                                rolling averages within the
                                                                                operating limitations for the
                                                                                operating parameters
                                                                                established during the
                                                                                performance test.
----------------------------------------------------------------------------------------------------------------
12. Existing limited use CI stationary RICE    a. Reduce CO emissions or limit   i. Conducting performance tests
 >500 HP.                                       the concentration of CO in the    every 8,760 hours or 5 years,
                                                stationary RICE exhaust, and      whichever comes first, for CO
                                                using an oxidation catalyst.      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 Sec.
                                                                                63.6625(b); and
                                                                                iii. Reducing these data to 4-
                                                                                hour rolling averages; and
                                                                                iv. Maintaining the 4-hour
                                                                                rolling averages within the
                                                                                operating limitations for the
                                                                                catalyst inlet temperature;
                                                                                and
                                                                                v. Measuring the pressure drop
                                                                                across the catalyst once per
                                                                                month and demonstrating that
                                                                                the pressure drop across the
                                                                                catalyst is within the
                                                                                operating limitation
                                                                                established during the
                                                                                performance test.
----------------------------------------------------------------------------------------------------------------
13. Existing limited use CI stationary RICE    a. Reduce CO emissions or limit   i. Conducting performance tests
 >500 HP.                                       the concentration of CO in the    every 8,760 hours or 5 years,
                                                stationary RICE exhaust, and      whichever comes first, for CO
                                                not using an oxidation catalyst.  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 Sec.
                                                                                63.6625(b); and
                                                                                iii. Reducing these data to 4-
                                                                                hour rolling averages; and
                                                                                iv. Maintaining the 4-hour
                                                                                rolling averages within the
                                                                                operating limitations for the
                                                                                operating parameters
                                                                                established during the
                                                                                performance test.
----------------------------------------------------------------------------------------------------------------
14. Existing non-emergency 4SLB stationary     a. Install an oxidation catalyst  i. Conducting annual compliance
 RICE >500 HP located at an area source of                                        demonstrations as specified in
 HAP that are not remote stationary RICE and                                      Sec.   63.6640(c) to show that
 that are operated more than 24 hours per                                         the average reduction of
 calendar year.                                                                   emissions of CO is 93 percent
                                                                                or more, or the average CO
                                                                                concentration is less than or
                                                                                equal to 47 ppmvd at 15
                                                                                percent O2; and either
                                                                                ii. Collecting the catalyst
                                                                                inlet temperature data
                                                                                according to Sec.
                                                                                63.6625(b), reducing these
                                                                                data to 4-hour rolling
                                                                                averages; and maintaining the
                                                                                4-hour rolling averages within
                                                                                the operating limitations for
                                                                                the catalyst inlet
                                                                                temperature; or
                                                                                iii. Immediately shutting down
                                                                                the engine if the catalyst
                                                                                inlet temperature exceeds 1350
                                                                                [deg]F.
----------------------------------------------------------------------------------------------------------------
15. Existing non-emergency 4SRB stationary     a. Install NSCR.................  i. Conducting annual compliance
 RICE >500 HP located at an area source of                                        demonstrations as specified in
 HAP that are not remote stationary RICE and                                      Sec.   63.6640(c) to show that
 that are operated more than 24 hours per                                         the average reduction of
 calendar year.                                                                   emissions of CO is 75 percent
                                                                                or more, or the average
                                                                                reduction of emissions of THC
                                                                                is 30 percent or more; and
                                                                                either
                                                                                ii. Collecting the catalyst
                                                                                inlet temperature data
                                                                                according to Sec.
                                                                                63.6625(b), reducing these
                                                                                data to 4-hour rolling
                                                                                averages; and maintaining the
                                                                                4-hour rolling averages within
                                                                                the operating limitations for
                                                                                the catalyst inlet
                                                                                temperature; or
                                                                                iii. Immediately shutting down
                                                                                the engine if the catalyst
                                                                                inlet temperature exceeds 1250
                                                                                [deg]F.
----------------------------------------------------------------------------------------------------------------
\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.

    30. Table 7 to Subpart ZZZZ of Part 63 is revised to read as
follows:
    As stated in Sec.  63.6650, you must comply with the following
requirements for reports:

                          Table 7 to Subpart ZZZZ of Part 63--Requirements for Reports
----------------------------------------------------------------------------------------------------------------
                                       You must submit a . . .  The report must contain    You must submit the
            For each . . .                                               . . .                 report . . .
----------------------------------------------------------------------------------------------------------------
1. Existing non-emergency, non-black   Compliance report......  a. If there are no       i. Semiannually
 start stationary RICE 100<=HP<=500                              deviations from any      according to the
 located at a major source of HAP;                               emission limitations     requirements in Sec.
 existing non-emergency, non-black                               or operating             63.6650(b)(1)-(5) for
 start stationary CI RICE >500 HP                                limitations that apply   engines that are not
 located at a major source of HAP;                               to you, a statement      limited use stationary
 existing non-emergency 4SRB                                     that there were no       RICE subject to
 stationary RICE >500 HP located at a                            deviations from the      numerical emission
 major source of HAP; existing non-                              emission limitations     limitations; and
 emergency, non-black start                                      or operating            ii. Annually according
 stationary CI RICE >300 HP located                              limitations during the   to the requirements in
 at an area source of HAP; new or                                reporting period. If     Sec.   63.6650(b)(6)-
 reconstructed non-emergency                                     there were no periods    (9) for engines that
 stationary RICE >500 HP located at a                            during which the CMS,    are limited use
 major source of HAP; and new or                                 including CEMS and       stationary RICE
 reconstructed non-emergency 4SLB                                CPMS, was out-of-        subject to numerical
 stationary RICE 250<=HP<=500 located                            control, as specified    emission limitations.
 at a major source of HAP.                                       in Sec.   63.8(c)(7),
                                                                 a statement that there
                                                                 were not periods
                                                                 during which the CMS
                                                                 was out-of-control
                                                                 during the reporting
                                                                 period; or.
                                                                b. If you had a          i. Semiannually
                                                                 deviation from any       according to the
                                                                 emission limitation or   requirements in Sec.
                                                                 operating limitation     63.6650(b).
                                                                 during the reporting
                                                                 period, the
                                                                 information in Sec.
                                                                 63.6650(d). If there
                                                                 were periods during
                                                                 which the CMS,
                                                                 including CEMS and
                                                                 CPMS, was out-of-
                                                                 control, as specified
                                                                 in Sec.   63.8(c)(7),
                                                                 the information in
                                                                 Sec.   63.6650(e); or
                                                                c. If you had a          i. Semiannually
                                                                 malfunction during the   according to the
                                                                 reporting period, the    requirements in Sec.
                                                                 information in Sec.      63.6650(b).
                                                                 63.6650(c)(4).
----------------------------------------------------------------------------------------------------------------
2. New or reconstructed non-emergency  Report.................  a. The fuel flow rate    i. Annually, according
 stationary RICE that combusts                                   of each fuel and the     to the requirements in
 landfill gas or digester gas                                    heating values that      Sec.   63.6650.
 equivalent to 10 percent or more of                             were used in your
 the gross heat input on an annual                               calculations, and you
 basis.                                                          must demonstrate that
                                                                 the percentage of heat
                                                                 input provided by
                                                                 landfill gas or
                                                                 digester gas, is
                                                                 equivalent to 10
                                                                 percent or more of the
                                                                 gross heat input on an
                                                                 annual basis; and.
                                                                b. The operating limits  i. See item 2.a.i.
                                                                 provided in your
                                                                 federally enforceable
                                                                 permit, and any
                                                                 deviations from these
                                                                 limits; and
                                                                c. Any problems or       i. See item 2.a.i.
                                                                 errors suspected with
                                                                 the meters.
3. Existing non-emergency, non-black   Compliance report......  a. The results of the    i. Semiannually
 start 4SLB and 4SRB stationary RICE                             annual compliance        according to the
 >500 HP located at an area source of                            demonstration, if        requirements in Sec.
 HAP that are not remote stationary                              conducted during the     63.6650(b)(1)-(5).
 RICE and that operate more than 24                              reporting period.
 hours per calendar year.
----------------------------------------------------------------------------------------------------------------

    31. Appendix A to Subpart ZZZZ of Part 63 is added to read as
follows:

Appendix A

Protocol for Using an Electrochemical Analyzer to Determine Oxygen and
Carbon Monoxide Concentrations from Certain Engines

1.0 Scope and Application. What is this Protocol?

    This protocol is a procedure for using portable electrochemical
(EC) cells for measuring carbon monoxide (CO) and oxygen
(O2) concentrations in controlled and uncontrolled
emissions from existing stationary 4-stroke lean burn and 4-stroke
rich burn reciprocating internal combustion engines as specified in
the applicable rule.

1.1 Analytes. What does this protocol determine?

    This protocol measures the engine exhaust gas concentrations of
carbon monoxide (CO) and oxygen (O2).

------------------------------------------------------------------------
            Analyte                  CAS No.            Sensitivity
------------------------------------------------------------------------
Carbon monoxide (CO)..........          630-08-0  Minimum detectable
Oxygen (O2)...................         7782-44-7   limit should be 2
                                                   percent of the
                                                   nominal range or 1
                                                   ppm, whichever is
                                                   less restrictive.
------------------------------------------------------------------------

1.2 Applicability. When is this protocol acceptable?

    This protocol is applicable to 40 CFR part 63, subpart ZZZZ.
Because of inherent cross sensitivities of EC cells, you must not
apply this protocol to other emissions sources without specific
instruction to that effect.

1.3 Data Quality Objectives. How good must my collected data be?

    Refer to Section 13 to verify and document acceptable analyzer
performance.

1.4 Range. What is the targeted analytical range for this protocol?

    The measurement system and EC cell design(s) conforming to this
protocol will determine the analytical range for each gas component.
The nominal ranges are defined by choosing up-scale calibration gas
concentrations near the maximum anticipated flue gas concentrations
for CO and O2, or no more than twice the permitted CO
level.

1.5 Sensitivity. What minimum detectable limit will this protocol yield
for a particular gas component?

    The minimum detectable limit depends on the nominal range and
resolution of the specific EC cell used, and the signal to noise
ratio of the measurement system. The minimum detectable limit should
be 2 percent of the nominal range or 1 ppm, whichever is less
restrictive.

2.0 Summary of Protocol

    In this protocol, a gas sample is extracted from an engine
exhaust system and then conveyed to a portable EC analyzer for
measurement of CO and O2 gas concentrations. This method
provides measurement system performance specifications and sampling
protocols to ensure reliable data. You may use additions to, or
modifications of vendor supplied measurement systems (e.g., heated
or unheated sample lines, thermocouples, flow meters, selective gas
scrubbers, etc.) to meet the design specifications of this protocol.
Do not make changes to the measurement system from the as-verified
configuration (Section 3.12).

3.0 Definitions

    3.1 Measurement System. The total equipment required for the
measurement of CO and O2 concentrations. The measurement
system consists of the following major subsystems:
    3.1.1 Data Recorder. A strip chart recorder, computer or digital
recorder for logging measurement data from the analyzer output. You
may record measurement data from the digital data display manually
or electronically.
    3.1.2 Electrochemical (EC) Cell. A device, similar to a fuel
cell, used to sense the presence of a specific analyte and generate
an electrical current output proportional to the analyte
concentration.
    3.1.3 Interference Gas Scrubber. A device used to remove or
neutralize chemical compounds that may interfere with the selective
operation of an EC cell.
    3.1.4 Moisture Removal System. Any device used to reduce the
concentration of moisture in the sample stream so as to protect the
EC cells from the damaging effects of condensation and to minimize
errors in measurements caused by the scrubbing of soluble gases.
    3.1.5 Sample Interface. The portion of the system used for one
or more of the following: sample acquisition; sample transport;
sample conditioning or protection of the EC cell from any degrading
effects of the engine exhaust effluent; removal of particulate
matter and condensed moisture.
    3.2 Nominal Range. The range of analyte concentrations over
which each EC cell is operated (normally 25 percent to 150 percent
of up-scale calibration gas value). Several nominal ranges can be
used for any given cell so long as the calibration and repeatability
checks for that range remain within specifications.
    3.3 Calibration Gas. A vendor certified concentration of a
specific analyte in an appropriate balance gas.
    3.4 Zero Calibration Error. The analyte concentration output
exhibited by the EC cell in response to zero-level calibration gas.
    3.5 Up-Scale Calibration Error. The mean of the difference
between the analyte concentration exhibited by the EC cell and the
certified concentration of the up-scale calibration gas.
    3.6 Interference Check. A procedure for quantifying analytical
interference from components in the engine exhaust gas other than
the targeted analytes.
    3.7 Repeatability Check. A protocol for demonstrating that an EC
cell operated over a given nominal analyte concentration range
provides a stable and consistent response and is not significantly
affected by repeated exposure to that gas.
    3.8 Sample Flow Rate. The flow rate of the gas sample as it
passes through the EC cell. In some situations, EC cells can
experience drift with changes in flow rate. The flow rate must be
monitored and documented during all phases of a sampling run.
    3.9 Sampling Run. A timed three-phase event whereby an EC cell's
response rises and plateaus in a sample conditioning phase, remains
relatively constant during a measurement data phase, then declines
during a refresh phase. The sample conditioning phase exposes the EC
cell to the gas sample for a length of time sufficient to reach a
constant response. The measurement data phase is the time interval
during which gas sample measurements can be made that meet the
acceptance criteria of this protocol. The refresh phase then purges
the EC cells with CO-free air. The refresh phase replenishes
requisite O2 and moisture in the electrolyte reserve and
provides a mechanism to de-gas or desorb any interference gas
scrubbers or filters so as to enable a stable CO EC cell response.
There are four primary types of sampling runs: Pre-sampling
calibrations; stack gas sampling; post-sampling calibration checks;
and measurement system repeatability checks. Stack gas sampling runs
can be chained together for extended evaluations, providing all
other procedural specifications are met.
    3.10 Sampling Day. A time not to exceed twelve hours from the
time of the pre-sampling calibration to the post-sampling
calibration check. During this time, stack gas sampling runs can be
repeated without repeated recalibrations, providing all other
sampling specifications have been met.
    3.11 Pre-Sampling Calibration/Post-Sampling Calibration Check.
The protocols executed at the beginning and end of each sampling day
to bracket measurement readings with controlled performance checks.
    3.12 Performance-Established Configuration. The EC cell and
sampling system configuration that existed at the time that it
initially met the performance requirements of this protocol.

4.0 Interferences

    When present in sufficient concentrations, NO and NO2
are two gas species that have been reported to interfere with CO
concentration measurements. In the likelihood of this occurrence, it
is the protocol user's responsibility to employ and properly
maintain an appropriate CO EC cell filter or scrubber for removal of
these gases, as described in Section 6.2.12.

5.0 Safety. [Reserved]

6.0 Equipment and Supplies

6.1 What equipment do I need for the measurement system?

    The system must maintain the gas sample at conditions that will
prevent moisture condensation in the sample transport lines, both
before and as the sample gas contacts the EC cells. The essential
components of the measurement system are described below.

6.2 Measurement System Components

    6.2.1 Sample Probe. A single extraction-point probe constructed
of glass, stainless steel or other non-reactive material, and of
length sufficient to reach any designated sampling point. The sample
probe must be designed to prevent plugging due to condensation or
particulate matter.
    6.2.2 Sample Line. Non-reactive tubing to transport the effluent
from the sample probe to the EC cell.
    6.2.3 Calibration Assembly (optional). A three-way valve
assembly or equivalent to introduce calibration gases at ambient
pressure at the exit end of the sample probe during calibration
checks. The assembly must be designed such that only stack gas or
calibration gas flows in the sample line and all gases flow through
any gas path filters.
    6.2.4 Particulate Filter (optional). Filters before the inlet of
the EC cell to prevent accumulation of particulate material in the
measurement system and extend the useful life of the components. All
filters must be fabricated of materials that are non-reactive to the
gas mixtures being sampled.
    6.2.5 Sample Pump. A leak-free pump to provide undiluted sample
gas to the system at a flow rate sufficient to minimize the response
time of the measurement system. If located upstream of the EC cells,
the pump must be constructed of a material that is non-reactive to
the gas mixtures being sampled.
    6.2.8 Sample Flow Rate Monitoring. An adjustable rotameter or
equivalent device used to adjust and maintain the sample flow rate
through the analyzer as prescribed.
    6.2.9 Sample Gas Manifold (optional). A manifold to divert a
portion of the sample gas stream to the analyzer and the remainder
to a by-pass discharge vent. The sample gas manifold may also
include provisions for introducing calibration gases directly to the
analyzer. The manifold must be constructed of a material that is
non-reactive to the gas mixtures being sampled.
    6.2.10 EC cell. A device containing one or more EC cells to
determine the CO and O2 concentrations in the sample gas
stream. The EC cell(s) must meet the applicable performance
specifications of Section 13 of this protocol.
    6.2.11 Data Recorder. A strip chart recorder, computer or
digital recorder to make a record of analyzer output data. The data
recorder resolution (i.e., readability) must be no greater than 1
ppm for CO; 0.1 percent for O2; and one degree (either
[deg]C or [deg]F) for temperature. Alternatively, you may use a
digital or analog meter having the same resolution to observe and
manually record the analyzer responses.
    6.2.12 Interference Gas Filter or Scrubber. A device to remove
interfering compounds upstream of the CO EC cell. Specific
interference gas filters or scrubbers used in the performance-
established configuration of the analyzer must continue to be used.
Such a filter or scrubber must have a means to determine when the
removal agent is exhausted. Periodically replace or replenish it in
accordance with the manufacturer's recommendations.

7.0 Reagents and Standards. What calibration gases are needed?

    7.1 Calibration Gases. CO calibration gases for the EC cell must
be CO in nitrogen or CO in a mixture of nitrogen and O2.
Use CO calibration gases with labeled concentration values certified
by the manufacturer to be within  5 percent of the label
value. Dry ambient air (20.9 percent O2) is acceptable
for calibration of the O2 cell. If needed, any lower
percentage O2 calibration gas must be a mixture of
O2 in nitrogen.
    7.1.1 Up-Scale CO Calibration Gas Concentration. Choose one or
more up-scale gas concentrations such that the average of the stack
gas measurements for each stack gas sampling run are between 25 and
150 percent of those concentrations. Alternatively, choose an up-
scale gas that does not exceed twice the concentration of the
applicable outlet standard. If a measured gas value exceeds 150
percent of the up-scale CO calibration gas value at any time during
the stack gas sampling run, the run must be discarded and repeated.
    7.1.2 Up-Scale O2 Calibration Gas Concentration. Select an
O2 gas concentration such that the difference between the
gas concentration and the average stack gas measurement or reading
for each sample run is less than 15 percent O2. When the
average exhaust gas O2 readings are above 6 percent, you
may use dry ambient air (20.9 percent O2) for the up-
scale O2 calibration gas.
    7.1.3 Zero Gas. Use an inert gas that contains less than 0.25
percent of the up-scale CO calibration gas concentration. You may
use dry air that is free from ambient CO and other combustion gas
products (e.g., CO2).

8.0 Sample Collection and Analysis

8.1 Selection of Sampling Sites

    8.1.1 Control Device Inlet. Select a sampling site sufficiently
downstream of the engine so that the combustion gases should be well
mixed. Use a single sampling extraction point near the center of the
duct (e.g., within the 10 percent centroidal area), unless
instructed otherwise.
    8.1.2 Exhaust Gas Outlet. Select a sampling site located at
least two stack diameters downstream of any disturbance (e.g.,
turbocharger exhaust, crossover junction or recirculation take-off)
and at least one-half stack diameter upstream of the gas discharge
to the atmosphere. Use a single sampling extraction point near the
center of the duct (e.g., within the 10 percent centroidal area),
unless instructed otherwise.
    8.2 Stack Gas Collection and Analysis. Prior to the first stack
gas sampling run, conduct the pre-sampling calibration in accordance
with Section 10.1. Use Figure 1 to record all data. Zero the
analyzer with zero gas. Confirm and record that the scrubber media
color is correct and not exhausted. Then position the probe at the
sampling point and begin the sampling run at the same flow rate used
during the up-scale calibration. Record the start time. Record all
EC cell output responses and the flow rate during the ``sample
conditioning phase'' once per minute until constant readings are
obtained. Then begin the ``measurement data phase'' and record
readings every 15 seconds for at least two minutes (or eight
readings), or as otherwise required to achieve two continuous
minutes of data that meet the specification given in Section 13.1.
Finally, perform the ``refresh phase'' by introducing dry air, free
from CO and other combustion gases, until several minute-to-minute
readings of consistent value have been obtained. For each run use
the ``measurement data phase'' readings to calculate the average
stack gas CO and O2 concentrations.
    8.3 EC Cell Rate. Maintain the EC cell sample flow rate so that
it does not vary by more than  10 percent throughout the
pre-sampling calibration, stack gas sampling and post-sampling
calibration check. Alternatively, the EC cell sample flow rate can
be maintained within a tolerance range that does not affect the gas
concentration readings by more than  3 percent, as
instructed by the EC cell manufacturer.

9.0 Quality Control (Reserved)

10.0 Calibration and Standardization

    10.1 Pre-Sampling Calibration. Conduct the following protocol
once for each nominal range to be used on each EC cell before
performing a stack gas sampling run on each field sampling day.
Repeat the calibration if you replace an EC cell before completing
all of the sampling runs. There is no prescribed order for
calibration of the EC cells; however, each cell must complete the
measurement data phase during calibration. Assemble the measurement
system by following the manufacturer's recommended protocols
including for preparing and preconditioning the EC cell. Assure the
measurement system has no leaks and verify the gas scrubbing agent
is not depleted. Use Figure 1 to record all data.
    10.1.1 Zero Calibration. For both the O2 and CO
cells, introduce zero gas to the measurement system (e.g., at the
calibration assembly) and record the concentration reading every
minute until readings are constant for at least two consecutive
minutes. Include the time and sample flow rate. Repeat the steps in
this section at least once to verify the zero calibration for each
component gas.
    10.1.2 Zero Calibration Tolerance. For each zero gas
introduction, the zero level output must be less than or equal to
 3 percent of the up-scale gas value or  1
ppm, whichever is less restrictive, for the CO channel and less than
or equal to  0.3 percent O2 for the
O2 channel.
    10.1.3 Up-Scale Calibration. Individually introduce each
calibration gas to the measurement system (e.g., at the calibration
assembly) and record the start time. Record all EC cell output
responses and the flow rate during this ``sample conditioning
phase'' once per minute until readings are constant for at least two
minutes. Then begin the ``measurement data phase'' and record
readings every 15 seconds for a total of two minutes, or as
otherwise required. Finally, perform the ``refresh phase'' by
introducing dry air, free from CO and other combustion gases, until
readings are constant for at least two consecutive minutes. Then
repeat the steps in this section at least once to verify the
calibration for each component gas.

Introduce all gases to flow through the entire sample handling
system (i.e., at the exit end of the sampling probe or the
calibration assembly).
    10.1.4 Up-Scale Calibration Error. The mean of the difference of
the ``measurement data phase'' readings from the reported standard
gas value must be less than or equal to  5 percent or
 1 ppm for CO or  0.5 percent O2,
whichever is less restrictive, respectively. The maximum allowable
deviation from the mean measured value of any single ``measurement
data phase'' reading must be less than or equal to  2
percent or  1 ppm for CO or  0.5 percent
O2, whichever is less restrictive, respectively.
    10.2 Post-Sampling Calibration Check. Conduct a stack gas post-
sampling calibration check after the stack gas sampling run or set
of runs and within 12 hours of the initial calibration. Conduct up-
scale and zero calibration checks using the protocol in Section
10.1. Make no changes to the sampling system or EC cell calibration
until all post-sampling calibration checks have been recorded. If
either the zero or up-scale calibration error exceeds the respective
specification in Sections 10.1.2 and 10.1.4 then all measurement
data collected since the previous successful calibrations are
invalid and re-calibration and re-sampling are required. If the
sampling system is disassembled or the EC cell calibration is
adjusted, repeat the calibration check before conducting the next
analyzer sampling run.

11.0 Analytical Procedure

    The analytical procedure is fully discussed in Section 8.

12.0 Calculations and Data Analysis

    Determine the CO and O2 concentrations for each stack
gas sampling run by calculating the mean gas concentrations of the
data recorded during the ``measurement data phase''.

13.0 Protocol Performance

    Use the following protocols to verify consistent analyzer
performance during each field sampling day.
    13.1 Measurement Data Phase Performance Check. Calculate the
mean of the readings from the ``measurement data phase''. The
maximum allowable deviation from the mean for each of the individual
readings is  2 percent, or  1 ppm, whichever
is less restrictive. Record the mean value and maximum deviation for
each gas monitored. Data must conform to Section 10.1.4. The EC cell
flow rate must conform to the specification in Section 8.3.

    Example: A measurement data phase is invalid if the maximum
deviation of any single reading comprising that mean is greater than
 2 percent or  1 ppm (the default criteria).
For example, if the mean = 30 ppm, single readings of below 29 ppm
and above 31 ppm are disallowed).

    13.2 Interference Check. Before the initial use of the EC cell
and interference gas scrubber in the field, and semi-annually
thereafter, challenge the interference gas scrubber with NO and
NO2 gas standards that are generally recognized as
representative of diesel-fueled engine NO and NO2
emission values. Record the responses displayed by the CO EC cell
and other pertinent data on Figure 1 or a similar form.
    13.2.1 Interference Response. The combined NO and NO2
interference response should be less than or equal to  5
percent of the up-scale CO calibration gas concentration.
    13.3 Repeatability Check. Conduct the following check once for
each nominal range that is to be used on the CO EC cell within five
days prior to each field sampling program. If a field sampling
program lasts longer than five days, repeat this check every five
days. Immediately repeat the check if the EC cell is replaced or if
the EC cell is exposed to gas concentrations greater than 150
percent of the highest up-scale gas concentration.
    13.3.1 Repeatability Check Procedure. Perform a complete EC cell
sampling run (all three phases) by introducing the CO calibration
gas to the measurement system and record the response. Follow
Section 10.1.3. Use Figure 1 to record all data. Repeat the run
three times for a total of four complete runs. During the four
repeatability check runs, do not adjust the system except where
necessary to achieve the correct calibration gas flow rate at the
analyzer.
    13.3.2 Repeatability Check Calculations. Determine the highest
and lowest average ``measurement data phase'' CO concentrations from
the four repeatability check runs and record the results on Figure 1
or a similar form. The absolute value of the difference between the
maximum and minimum average values recorded must not vary more than
 3 percent or  1 ppm of the up-scale gas
value, whichever is less restrictive.

14.0 Pollution Prevention (Reserved)

15.0 Waste Management (Reserved)

16.0 Alternative Procedures (Reserved)

17.0 References

    (1) ``Development of an Electrochemical Cell Emission Analyzer
Test Protocol'', Topical Report, Phil Juneau, Emission Monitoring,
Inc., July 1997.
    (2) ``Determination of Nitrogen Oxides, Carbon Monoxide, and
Oxygen Emissions from Natural Gas-Fired Engines, Boilers, and
Process Heaters Using Portable Analyzers'', EMC Conditional Test
Protocol 30 (CTM-30), Gas Research Institute Protocol GRI-96/0008,
Revision 7, October 13, 1997.
    (3) ``ICAC Test Protocol for Periodic Monitoring'', EMC
Conditional Test Protocol 34 (CTM-034), The Institute of Clean Air
Companies, September 8, 1999.
    (4) ``Code of Federal Regulations'', Protection of Environment,
40 CFR, Part 60, Appendix A, Methods 1-4; 10.
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