whichever comes
                               first.\2\
                              b. Inspect air
                               cleaner every 1,000
                               hours of operation
                               or annually,
                               whichever comes
                               first, and replace
                               as necessary;.
                              c. Inspect all hoses
                               and belts every 500
                               hours of operation
                               or annually,
                               whichever comes
                               first, and replace
                               as necessary.\3\.
3. Non-Emergency, non-black   Limit concentration
 start CI stationary RICE      of CO in the
 100<=HP<=300 HP.              stationary RICE
                               exhaust to 230
                               ppmvd or less at 15
                               percent O2.
4. Non-Emergency, non-black   a. Limit
 start CI stationary RICE      concentration of CO
 300>HP<=500.                  in the stationary
                               RICE exhaust to 49
                               ppmvd or less at 15
                               percent O2; or
                              b. Reduce CO
                               emissions by 70
                               percent or more..
5. Non-Emergency, non-black   a. Limit
 start stationary CI RICE      concentration of CO
 >500 HP.                      in the stationary
                               RICE exhaust to 23
                               ppmvd or less at 15
                               percent O2; or
                              b. Reduce CO
                               emissions by 70
                               percent or more..
6. Emergency stationary SI    a. Change oil and
 RICE and black start          filter every 500
 stationary SI RICE.\1\        hours of operation
                               or annually,
                               whichever comes
                               first;\2\
                              b. Inspect spark
                               plugs every 1,000
                               hours of operation
                               or annually,
                               whichever comes
                               first, and replace
                               as necessary;.
                              c. Inspect all hoses
                               and belts every 500
                               hours of operation
                               or annually,
                               whichever comes
                               first, and replace
                               as necessary.\3\.
7. Non-Emergency, non-black   a. Change oil and
 start stationary SI RICE      filter every 1,440
 <100 HP that are not 2SLB     hours of operation
 stationary RICE.              or annually,
                               whichever comes
                               first;\2\
                              b. Inspect spark
                               plugs every 1,440
                               hours of operation
                               or annually,
                               whichever comes
                               first, and replace
                               as necessary;.
                              c. Inspect all hoses
                               and belts every
                               1,440 hours of
                               operation or
                               annually, whichever
                               comes first, and
                               replace as
                               necessary.\3\

8. Non-Emergency, non-black   a. Change oil and
 start 2SLB stationary SI      filter every 4,320
 RICE <100 HP.                 hours of operation
                               or annually,
                               whichever comes
                               first;\2\
                              b. Inspect spark
                               plugs every 4,320
                               hours of operation
                               or annually,
                               whichever comes
                               first, and replace
                               as necessary;.
                              c. Inspect all hoses
                               and belts every
                               4,320 hours of
                               operation or
                               annually, whichever
                               comes first, and
                               replace as
                               necessary.\3\
9. Non-emergency, non-black   Limit concentration
 start 2SLB stationary RICE    of CO in the
 100<=HP<=500.                 stationary RICE
                               exhaust to 225
                               ppmvd or less at 15
                               percent O2.
10. Non-emergency, non-black  Limit concentration
 start 4SLB stationary RICE    of CO in the
 100<=HP<=500.                 stationary RICE
                               exhaust to 47 ppmvd
                               or less at 15
                               percent O2.
11. Non-emergency, non-black  Limit concentration
 start 4SRB stationary RICE    of formaldehyde in
 100<=HP<=500.                 the stationary RICE
                               exhaust to 10.3
                               ppmvd or less at 15
                               percent O2.
12. Non-emergency, non-black  Limit concentration
 start stationary RICE         of CO in the
 100<=HP<=500 which combusts   stationary RICE
 landfill or digester gas      exhaust to 177
 equivalent to 10 percent or   ppmvd or less at 15
 more of the gross heat        percent O2.
 input on an annual basis.
------------------------------------------------------------------------
\1\ If an emergency engine is operating during an emergency and it is
  not possible to shut down the engine in order to perform the work
  practice requirements on the schedule required in Table 2c of this
  subpart, or if performing the work practice on the required schedule
  would otherwise pose an unacceptable risk under federal, state, or
  local law, the work practice can be delayed until the emergency is
  over or the unacceptable risk under federal, state, or local law has
  abated. The work practice should be performed as soon as practicable
  after the emergency has ended or the unacceptable risk under federal,
  state, or local law has abated. Sources must report any failure to
  perform the work practice on the schedule required and the federal,
  state or local law under which the risk was deemed unacceptable.
\2\ Sources have the option to utilize an oil analysis program as
  described in Sec.   63.6625(i) or (j) in order to extend the specified
  oil change requirement in Table 2c of this subpart.
\3\ Sources can petition the Administrator pursuant to the requirements
  of 40 CFR 63.6(g) for alternative work practices.

0
32. Table 2d to Subpart ZZZZ of Part 63 is revised to read as follows:
    As stated in Sec. Sec.  63.6603 and 63.6640, you must comply with
the following requirements for existing stationary RICE located at area
sources of HAP emissions:

     Table 2d to Subpart ZZZZ of Part 63--Requirements for Existing
        Stationary RICE Located at Area Sources of HAP Emissions
------------------------------------------------------------------------
                                You must meet the
                                    following         During periods of
       For each . . .          requirement, except  startup you must . .
                                during periods of             .
                                  startup . . .
------------------------------------------------------------------------
1. Non-Emergency, non-black   a. Change oil and     Minimize the
 start CI stationary RICE      filter every 1,000    engine's time spent
 <=300 HP.                     hours of operation    at idle and
                               or annually,          minimize the
                               whichever comes       engine's startup
                               first;\1\             time at startup to
                              b. Inspect air         a period needed for
                               cleaner every 1,000   appropriate and
                               hours of operation    safe loading of the
                               or annually,          engine, not to
                               whichever comes       exceed 30 minutes,
                               first, and replace    after which time
                               as necessary;.        the non-startup
                              c. Inspect all hoses   emission
                               and belts every 500   limitations apply.
                               hours of operation
                               or annually,
                               whichever comes
                               first, and replace
                               as necessary..
2. Non-Emergency, non-black   a. Limit
 start CI stationary RICE      concentration of CO
 300500 HP.                      in the stationary
                               RICE exhaust to 23
                               ppmvd at 15 percent
                               O2; or
                              b. Reduce CO
                               emissions by 70
                               percent or more.
4. Emergency stationary CI    a. Change oil and
 RICE and black start          filter every 500
 stationary CI RICE.\2\        hours of operation
                               or annually,
                               whichever comes
                               first;\1\
                              b. Inspect air
                               cleaner every 1,000
                               hours of operation
                               or annually,
                               whichever comes
                               first, and replace
                               as necessary; and

                              c. Inspect all hoses
                               and belts every 500
                               hours of operation
                               or annually,
                               whichever comes
                               first, and replace
                               as necessary.
5. Emergency stationary SI    a. Change oil and
 RICE; black start             filter every 500
 stationary SI RICE; non-      hours of operation
 emergency, non-black start    or annually,
 4SLB stationary RICE >500     whichever comes
 HP that operate 24 hours or   first;\1\;
 less per calendar year; non- b. Inspect spark
 emergency, non-black start    plugs every 1,000
 4SRB stationary RICE >500     hours of operation
 HP that operate 24 hours or   or annually,
 less per calendar year.\2\    whichever comes
                               first, and replace
                               as necessary; and.
                              c. Inspect all hoses
                               and belts every 500
                               hours of operation
                               or annually,
                               whichever comes
                               first, and replace
                               as necessary..
6. Non-emergency, non-black   a. Change oil and
 start 2SLB stationary RICE.   filter every 4,320
                               hours of operation
                               or annually,
                               whichever comes
                               first;\1\
                              b. Inspect spark
                               plugs every 4,320
                               hours of operation
                               or annually,
                               whichever comes
                               first, and replace
                               as necessary; and
                              c. Inspect all hoses
                               and belts every
                               4,320 hours of
                               operation or
                               annually, whichever
                               comes first, and
                               replace as
                               necessary.
7. Non-emergency, non-black   a. Change oil and
 start 4SLB stationary RICE    filter every 1,440
 <=500 HP.                     hours of operation
                               or annually,
                               whichever comes
                               first;\1\
                              b. Inspect spark
                               plugs every 1,440
                               hours of operation
                               or annually,
                               whichever comes
                               first, and replace
                               as necessary; and
                              c. Inspect all hoses
                               and belts every
                               1,440 hours of
                               operation or
                               annually, whichever
                               comes first, and
                               replace as
                               necessary.
8. Non-emergency, non-black   a. Change oil and
 start 4SLB remote             filter every 2,160
 stationary RICE >500 HP.      hours of operation
                               or annually,
                               whichever comes
                               first;\1\
                              b. Inspect spark
                               plugs every 2,160
                               hours of operation
                               or annually,
                               whichever comes
                               first, and replace
                               as necessary; and
                              c. Inspect all hoses
                               and belts every
                               2,160 hours of
                               operation or
                               annually, whichever
                               comes first, and
                               replace as
                               necessary.
9. Non-emergency, non-black   Install an oxidation
 start 4SLB stationary RICE    catalyst to reduce
 >500 HP that are not remote   HAP emissions from
 stationary RICE and that      the stationary
 operate more than 24 hours    RICE.
 per calendar year.
10. Non-emergency, non-black  a. Change oil and
 start 4SRB stationary RICE    filter every 1,440
 <=500 HP.                     hours of operation
                               or annually,
                               whichever comes
                               first;\1\
                              b. Inspect spark
                               plugs every 1,440
                               hours of operation
                               or annually,
                               whichever comes
                               first, and replace
                               as necessary; and
                              c. Inspect all hoses
                               and belts every
                               1,440 hours of
                               operation or
                               annually, whichever
                               comes first, and
                               replace as
                               necessary.
11. Non-emergency, non-black  a. Change oil and
 start 4SRB remote             filter every 2,160
 stationary RICE >500 HP.      hours of operation
                               or annually,
                               whichever comes
                               first;\1\
                              b. Inspect spark
                               plugs every 2,160
                               hours of operation
                               or annually,
                               whichever comes
                               first, and replace
                               as necessary; and
                              c. Inspect all hoses
                               and belts every
                               2,160 hours of
                               operation or
                               annually, whichever
                               comes first, and
                               replace as
                               necessary.
12. Non-emergency, non-black  Install NSCR to
 start 4SRB stationary RICE    reduce HAP
 >500 HP that are not remote   emissions from the
 stationary RICE and that      stationary RICE.
 operate more than 24 hours
 per calendar year.

13. Non-emergency, non-black  a. Change oil and
 start stationary RICE which   filter every 1,440
 combusts landfill or          hours of operation
 digester gas equivalent to    or annually,
 10 percent or more of the     whichever comes
 gross heat input on an        first;\1\
 annual basis.                b. Inspect spark
                               plugs every 1,440
                               hours of operation
                               or annually,
                               whichever comes
                               first, and replace
                               as necessary; and.
                              c. Inspect all hoses
                               and belts every
                               1,440 hours of
                               operation or
                               annually, whichever
                               comes first, and
                               replace as
                               necessary.
------------------------------------------------------------------------
\1\ Sources have the option to utilize an oil analysis program as
  described in Sec.   63.6625(i) or (j) in order to extend the specified
  oil change requirement in Table 2d of this subpart.
\2\ If an emergency engine is operating during an emergency and it is
  not possible to shut down the engine in order to perform the
  management practice requirements on the schedule required in Table 2d
  of this subpart, or if performing the management practice on the
  required schedule would otherwise pose an unacceptable risk under
  federal, state, or local law, the management practice can be delayed
  until the emergency is over or the unacceptable risk under federal,
  state, or local law has abated. The management practice should be
  performed as soon as practicable after the emergency has ended or the
  unacceptable risk under federal, state, or local law has abated.
  Sources must report any failure to perform the management practice on
  the schedule required and the federal, state or local law under which
  the risk was deemed unacceptable.

0
33. Table 3 to Subpart ZZZZ of Part 63 is revised to read as follows:
    As stated in Sec. Sec.  63.6615 and 63.6620, you must comply with
the following subsequent performance test requirements:

    Table 3 to Subpart ZZZZ of Part 63--Subsequent Performance Tests
------------------------------------------------------------------------
                               Complying with the
       For each . . .         requirement to . . .     You must . . .
------------------------------------------------------------------------
1. New or reconstructed 2SLB  Reduce CO emissions   Conduct subsequent
 stationary RICE >500 HP       and not using a       performance tests
 located at major sources;     CEMS.                 semiannually.\1\
 new or reconstructed 4SLB
 stationary RICE >=250 HP
 located at major sources;
 and new or reconstructed CI
 stationary RICE >500 HP
 located at major sources.
2. 4SRB stationary RICE       Reduce formaldehyde   Conduct subsequent
 >=5,000 HP located at major   emissions.            performance tests
 sources.                                            semiannually.\1\
3. Stationary RICE >500 HP    Limit the             Conduct subsequent
 located at major sources      concentration of      performance tests
 and new or reconstructed      formaldehyde in the   semiannually.\1\
 4SLB stationary RICE          stationary RICE
 250<=HP<=500 located at       exhaust.
 major sources.
4. Existing non-emergency,    Limit or reduce CO    Conduct subsequent
 non-black start CI            emissions and not     performance tests
 stationary RICE >500 HP       using a CEMS.         every 8,760 hours
 that are not limited use                            or 3 years,
 stationary RICE.                                    whichever comes
                                                     first.
5. Existing non-emergency,    Limit or reduce CO    Conduct subsequent
 non-black start CI            emissions and not     performance tests
 stationary RICE >500 HP       using a CEMS.         every 8,760 hours
 that are limited use                                or 5 years,
 stationary RICE.                                    whichever comes
                                                     first.
------------------------------------------------------------------------
\1\ 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.

0
34. Table 4 to Subpart ZZZZ of Part 63 is revised to read as follows:
    As stated in Sec. Sec.  63.6610, 63.6611, 63.6612, 63.6620, and
63.6640, you must comply with the following requirements for
performance tests for stationary RICE:

                     Table 4 to Subpart ZZZZ of Part 63. Requirements for Performance Tests
----------------------------------------------------------------------------------------------------------------
                                Complying with                                                According to the
        For each . . .         the requirement     You must . . .          Using . . .            following
                                   to . . .                                                  requirements . . .
----------------------------------------------------------------------------------------------------------------
1. 2SLB, 4SLB, and CI          a. reduce CO     i. Measure the O2 at  (1) Method 3 or 3A    (a) Measurements to
 stationary RICE.               emissions.       the inlet and         or 3B of 40 CFR       determine O2 must
                                                 outlet of the         part 60, appendix     be made at the same
                                                 control device; and   A, or ASTM Method     time as the
                                                                       D6522-00              measurements for CO
                                                                       (Reapproved 2005).a   concentration.
                                                                       c
                                                ii. Measure the CO    (1) ASTM D6522-00     (a) The CO
                                                 at the inlet and      (Reapproved 2005) a   concentration must
                                                 the outlet of the     b c or Method 10 of   be at 15 percent
                                                 control device.       40 CFR part 60,       O2, dry basis.
                                                                       appendix A.

2. 4SRB stationary RICE......  a. reduce        i. Select the         (1) Method 1 or 1A    (a) sampling sites
                                formaldehyde     sampling port         of 40 CFR part 60,    must be located at
                                emissions.       location and the      appendix A Sec.       the inlet and
                                                 number of traverse    63.7(d)(1)(i).        outlet of the
                                                 points; and                                 control device.
                                                ii. Measure O2 at     (1) Method 3 or 3A    (a) measurements to
                                                 the inlet and         or 3B of 40 CFR       determine O2
                                                 outlet of the         part 60, appendix     concentration must
                                                 control device; and   A, or ASTM Method     be made at the same
                                                                       D6522-00              time as the
                                                                       (Reapproved           measurements for
                                                                       2005).\a\             formaldehyde or THC
                                                                                concentration.
                                                iii. Measure          (1) Method 4 of 40    (a) measurements to
                                                 moisture content at   CFR part 60,          determine moisture
                                                 the inlet and         appendix A, or Test   content must be
                                                 outlet of the         Method 320 of 40      made at the same
                                                 control device; and   CFR part 63,          time and location
                                                                       appendix A, or ASTM   as the measurements
                                                                       D 6348-03.\a\         for formaldehyde or
                                                                                THC concentration.
                                                iv. If demonstrating  (1) Method 320 or     (a) formaldehyde
                                                 compliance with the   323 of 40 CFR part    concentration must
                                                 formaldehyde          63, appendix A; or    be at 15 percent
                                                 percent reduction     ASTM D6348-03,\a\     O2, dry basis.
                                                 requirement,          provided in ASTM      Results of this
                                                 measure               D6348-03 Annex A5     test consist of the
                                                 formaldehyde at the   (Analyte Spiking      average of the
                                                 inlet and the         Technique), the       three 1-hour or
                                                 outlet of the         percent R must be     longer runs.
                                                 control device.       greater than or
                                                                       equal to 70 and
                                                                       less than or equal
                                                                       to 130.
                                                v. If demonstrating   (1) Method 25A,       (a) THC
                                                 compliance with the   reported as           concentration must
                                                 THC percent           propane, of 40 CFR    be at 15 percent
                                                 reduction             part 60, appendix A.  O2, dry basis.
                                                 requirement,                                Results of this
                                                 measure THC at the                          test consist of the
                                                 inlet and the                               average of the
                                                 outlet of the                               three 1-hour or
                                                 control device.                             longer runs.
3. Stationary RICE...........  a. limit the     i. Select the         (1) Method 1 or 1A    (a) if using a
                                concentration    sampling port         of 40 CFR part 60,    control device, the
                                of               location and the      appendix A Sec.       sampling site must
                                formaldehyde     number of traverse    63.7(d)(1)(i).        be located at the
                                or CO in the     points; and                                 outlet of the
                                stationary                                                   control device.
                                RICE exhaust.
                                                ii. Determine the O2  (1) Method 3 or 3A    (a) measurements to
                                                 concentration of      or 3B of 40 CFR       determine O2
                                                 the stationary RICE   part 60, appendix     concentration must
                                                 exhaust at the        A, or ASTM Method     be made at the same
                                                 sampling port         D6522-00              time and location
                                                 location; and         (Reapproved           as the measurements
                                                                       2005).\a\             for formaldehyde or
                                                                                CO concentration.
                                                iii. Measure          (1) Method 4 of 40    (a) measurements to
                                                 moisture content of   CFR part 60,          determine moisture
                                                 the stationary RICE   appendix A, or Test   content must be
                                                 exhaust at the        Method 320 of 40      made at the same
                                                 sampling port         CFR part 63,          time and location
                                                 location; and         appendix A, or ASTM   as the measurements
                                                                       D 6348-03.\a\         for formaldehyde or
                                                                                CO concentration.
                                                iv. Measure           (1) Method 320 or     (a) Formaldehyde
                                                 formaldehyde at the   323 of 40 CFR part    concentration must
                                                 exhaust of the        63, appendix A; or    be at 15 percent
                                                 stationary RICE; or   ASTM D6348-03,\a\     O2, dry basis.
                                                                       provided in ASTM      Results of this
                                                                       D6348-03 Annex A5     test consist of the
                                                                       (Analyte Spiking      average of the
                                                                       Technique), the       three 1-hour or
                                                                       percent R must be     longer runs.
                                                                       greater than or
                                                                       equal to 70 and
                                                                       less than or equal
                                                                       to 130.
                                                v. measure CO at the  (1) Method 10 of 40   (a) CO concentration
                                                 exhaust of the        CFR part 60,          must be at 15
                                                 stationary RICE.      appendix A, ASTM      percent O2, dry
                                                                       Method D6522-00       basis. Results of
                                                                       (2005),a c Method     this test consist
                                                                       320 of 40 CFR part    of the average of
                                                                       63, appendix A, or    the three 1-hour or
                                                                       ASTM D6348-03.\a\     longer runs.
----------------------------------------------------------------------------------------------------------------
\a\ Incorporated by reference, see 40 CFR 63.14. You may also obtain copies from University Microfilms
  International, 300 North Zeeb Road, Ann Arbor, MI 48106.
\b\ You may also use Method 320 of 40 CFR part 63, appendix A, or ASTM D6348-03.
\c\ ASTM-D6522-00 (2005) may be used to test both CI and SI stationary RICE.

0
35. Table 5 to Subpart ZZZZ of Part 63 is revised to read as follows:
    As stated in Sec. Sec.  63.6612, 63.6625 and 63.6630, you must
initially comply with the emission and operating limitations as
required by the following:

  Table 5 to Subpart ZZZZ of Part 63--Initial Compliance With Emission
       Limitations, Operating Limitations, and Other Requirements
------------------------------------------------------------------------
                                                          You have
       For each . . .          Complying with the   demonstrated initial
                              requirement to . . .   compliance if . . .
------------------------------------------------------------------------
1. New or reconstructed non-  a. Reduce CO          i. The average
 emergency 2SLB stationary     emissions and using   reduction of
 RICE >500 HP located at a     oxidation catalyst,   emissions of CO
 major source of HAP, new or   and using a CPMS.     determined from the
 reconstructed non-emergency                         initial performance
 4SLB stationary RICE >=250                          test achieves the
 HP located at a major                               required CO percent
 source of HAP, non-                                 reduction; and
 emergency stationary CI                            ii. You have
 RICE >500 HP located at a                           installed a CPMS to
 major source of HAP, and                            continuously
 existing non-emergency                              monitor catalyst
 stationary CI RICE >500 HP                          inlet temperature
 located at an area source                           according to the
 of HAP.                                             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   a. Limit the          i. The average CO
 CI RICE >500 HP located at    concentration of      concentration
 a major source of HAP, and    CO, using oxidation   determined from the
 existing non-emergency        catalyst, and using   initial performance
 stationary CI RICE >500 HP    a CPMS.               test is less than
 located at an area source                           or equal to the CO
 of HAP.                                             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-  a. Reduce CO          i. The average
 emergency 2SLB stationary     emissions and not     reduction of
 RICE >500 HP located at a     using oxidation       emissions of CO
 major source of HAP, new or   catalyst.             determined from the
 reconstructed non-emergency                         initial performance
 4SLB stationary RICE >=250                          test achieves the
 HP located at a major                               required CO percent
 source of HAP, non-                                 reduction; and
 emergency stationary CI                            ii. You have
 RICE >500 HP located at a                           installed a CPMS to
 major source of HAP, and                            continuously
 existing non-emergency                              monitor operating
 stationary CI RICE >500 HP                          parameters approved
 located at an area source                           by the
 of HAP.                                             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   a. Limit the          i. The average CO
 CI RICE >500 HP located at    concentration of      concentration
 a major source of HAP, and    CO, and not using     determined from the
 existing non-emergency        oxidation catalyst.   initial performance
 stationary CI RICE >500 HP                          test is less than
 located at an area source                           or equal to the CO
 of HAP.                                             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-  a. Reduce CO          i. You have
 emergency 2SLB stationary     emissions, and        installed a CEMS to
 RICE >500 HP located at a     using a CEMS.         continuously
 major source of HAP, new or                         monitor CO and
 reconstructed non-emergency                         either O2 or CO2 at
 4SLB stationary RICE >=250                          both the inlet and
 HP located at a major                               outlet of the
 source of HAP, non-                                 oxidation catalyst
 emergency stationary CI                             according to the
 RICE >500 HP located at a                           requirements in
 major source of HAP, and                            Sec.   63.6625(a);
 existing non-emergency                              and
 stationary CI RICE >500 HP                         ii. You have
 located at an area source                           conducted a
 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   a. Limit the          i. You have
 CI RICE >500 HP located at    concentration of      installed a CEMS to
 a major source of HAP, and    CO, and using a       continuously
 existing non-emergency        CEMS.                 monitor CO and
 stationary CI RICE >500 HP                          either O2 or CO2 at
 located at an area source                           the outlet of the
 of HAP.                                             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         a. Reduce             i. The average
 stationary RICE >500 HP       formaldehyde          reduction of
 located at a major source     emissions and using   emissions of
 of HAP.                       NSCR.                 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         a. Reduce             i. The average
 stationary RICE >500 HP       formaldehyde          reduction of
 located at a major source     emissions and not     emissions of
 of HAP.                       using NSCR.           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 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-  a. Limit the          i. The average
 emergency stationary RICE     concentration of      formaldehyde
 >500 HP located at a major    formaldehyde in the   concentration,
 source of HAP, new or         stationary RICE       corrected to 15
 reconstructed non-emergency   exhaust and using     percent O2, dry
 4SLB stationary RICE          oxidation catalyst    basis, from the
 250<=HP<=500 located at a     or NSCR.              three test runs is
 major source of HAP, and                            less than or equal
 existing non-emergency 4SRB                         to the formaldehyde
 stationary RICE >500 HP                             emission
 located at a major source                           limitation; and
 of HAP.                                            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- a. Limit the          i. The average
 emergency stationary RICE     concentration of      formaldehyde
 >500 HP located at a major    formaldehyde in the   concentration,
 source of HAP, new or         stationary RICE       corrected to 15
 reconstructed non-emergency   exhaust and not       percent O2, dry
 4SLB stationary RICE          using oxidation       basis, from the
 250<=HP<=500 located at a     catalyst or NSCR.     three test runs is
 major source of HAP, and                            less than or equal
 existing non-emergency 4SRB                         to the formaldehyde
 stationary RICE >500 HP                             emission
 located at a major source                           limitation; and
 of HAP.                                            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    a. Reduce CO          i. The average
 stationary RICE               emissions.            reduction of
 100<=HP<=500 located at a                           emissions of CO or
 major source of HAP, and                            formaldehyde, as
 existing non-emergency                              applicable
 stationary CI RICE                                  determined from the
 300500     oxidation catalyst.   conducted an
 HP located at an area                               initial compliance
 source of HAP that are not                          demonstration as
 remote stationary RICE and                          specified in Sec.
 that are operated more than                         63.6630(e) to show
 24 hours per calendar year.                         that 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    a. Install NSCR.....  i. You have
 4SRB stationary RICE >500                           conducted an
 HP located at an area                               initial compliance
 source of HAP that are not                          demonstration as
 remote stationary RICE and                          specified in Sec.
 that are operated more than                         63.6630(e) to show
 24 hours per calendar year.                         that the average
                                                     reduction of
                                                     emissions of CO is
                                                     75 percent or more,
                                                     the average CO
                                                     concentration is
                                                     less than or equal
                                                     to 270 ppmvd at 15
                                                     percent O2, 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.
------------------------------------------------------------------------

0
36. 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, and Other Requirements
------------------------------------------------------------------------
                                                    You must demonstrate
                               Complying with the        continuous
       For each . . .         requirement to . . .   compliance by . . .

------------------------------------------------------------------------
1. New or reconstructed non-  a. Reduce CO          i. Conducting
 emergency 2SLB stationary     emissions and using   semiannual
 RICE >500 HP located at a     an oxidation          performance tests
 major source of HAP, new or   catalyst, and using   for CO to
 reconstructed non-emergency   a CPMS.               demonstrate that
 4SLB stationary RICE >=250                          the required CO
 HP located at a major                               percent reduction
 source of HAP, and new or                           is achieved \a\;
 reconstructed non-emergency                         and
 CI stationary RICE >500 HP                         ii. Collecting the
 located at a major source                           catalyst inlet
 of HAP.                                             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.
2. New or reconstructed non-  a. Reduce CO          i. Conducting
 emergency 2SLB stationary     emissions and not     semiannual
 RICE >500 HP located at a     using an oxidation    performance tests
 major source of HAP, new or   catalyst, and using   for CO to
 reconstructed non-emergency   a CPMS.               demonstrate that
 4SLB stationary RICE >=250                          the required CO
 HP located at a major                               percent reduction
 source of HAP, and new or                           is achieved \a\;
 reconstructed non-emergency                         and
 CI stationary RICE >500 HP                         ii. Collecting the
 located at a major source                           approved operating
 of HAP.                                             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.
3. New or reconstructed non-  a. Reduce CO          i. Collecting the
 emergency 2SLB stationary     emissions or limit    monitoring data
 RICE >500 HP located at a     the concentration     according to Sec.
 major source of HAP, new or   of CO in the          63.6625(a),
 reconstructed non-emergency   stationary RICE       reducing the
 4SLB stationary RICE >=250    exhaust, and using    measurements to 1-
 HP located at a major         a CEMS.               hour averages,
 source of HAP, new or                               calculating the
 reconstructed non-emergency                         percent reduction
 stationary CI RICE >500 HP                          or concentration of
 located at a major source                           CO emissions
 of HAP, and existing non-                           according to Sec.
 emergency stationary CI                             63.6620; and
 RICE >500 HP.                                      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         a. Reduce             i. Collecting the
 stationary RICE >500 HP       formaldehyde          catalyst inlet
 located at a major source     emissions and using   temperature data
 of HAP.                       NSCR.                 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         a. Reduce             i. Collecting the
 stationary RICE >500 HP       formaldehyde          approved operating
 located at a major source     emissions and not     parameter (if any)
 of HAP.                       using NSCR.           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         a. Reduce             Conducting
 stationary RICE with a        formaldehyde          semiannual
 brake HP >=5,000 located at   emissions.            performance tests
 a major source of HAP.                              for 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-  a. Limit the          i. Conducting
 emergency stationary RICE     concentration of      semiannual
 >500 HP located at a major    formaldehyde in the   performance tests
 source of HAP and new or      stationary RICE       for formaldehyde to
 reconstructed non-emergency   exhaust and using     demonstrate that
 4SLB stationary RICE          oxidation catalyst    your emissions
 250<=HP<=500 located at a     or NSCR.              remain at or below
 major source of HAP.                                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-  a. Limit the          i. Conducting
 emergency stationary RICE     concentration of      semiannual
 >500 HP located at a major    formaldehyde in the   performance tests
 source of HAP and new or      stationary RICE       for formaldehyde to
 reconstructed non-emergency   exhaust and not       demonstrate that
 4SLB stationary RICE          using oxidation       your emissions
 250<=HP<=500 located at a     catalyst or NSCR.     remain at or below
 major source of HAP.                                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     a. Work or            i. Operating and
 black start stationary RICE   Management            maintaining the
 <=500 HP located at a major   practices.            stationary RICE
 source of HAP, existing non-                        according to the
 emergency stationary RICE                           manufacturer's
 <100 HP located at a major                          emission-related
 source of HAP, existing                             operation and
 emergency and black start                           maintenance
 stationary RICE located at                          instructions; or
 an area source of HAP,                             ii. Develop and
 existing non-emergency                              follow your own
 stationary CI RICE <=300 HP                         maintenance plan
 located at an area source                           which must provide
 of HAP, existing non-                               to the extent
 emergency 2SLB stationary                           practicable for the
 RICE located at an area                             maintenance and
 source of HAP, existing non-                        operation of the
 emergency stationary SI                             engine in a manner
 RICE located at an area                             consistent with
 source of HAP which                                 good air pollution
 combusts landfill or                                control practice
 digester gas equivalent to                          for minimizing
 10 percent or more of the                           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    a. Reduce CO          i. Conducting
 RICE >500 HP that are not     emissions, or limit   performance tests
 limited use stationary RICE.  the concentration     every 8,760 hours
                               of CO in the          or 3 years,
                               stationary RICE       whichever comes
                               exhaust, and using    first, for CO or
                               oxidation catalyst.   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    a. Reduce CO          i. Conducting
 RICE >500 HP that are not     emissions, or limit   performance tests
 limited use stationary RICE.  the concentration     every 8,760 hours
                               of CO in the          or 3 years,
                               stationary RICE       whichever comes
                               exhaust, and not      first, for CO or
                               using oxidation       formaldehyde, as
                               catalyst.             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   a. Reduce CO          i. Conducting
 stationary RICE >500 HP.      emissions or limit    performance tests
                               the concentration     every 8,760 hours
                               of CO in the          or 5 years,
                               stationary RICE       whichever comes
                               exhaust, and using    first, for CO or
                               an oxidation          formaldehyde, as
                               catalyst.             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   a. Reduce CO          i. Conducting
 stationary RICE >500 HP.      emissions or limit    performance tests
                               the concentration     every 8,760 hours
                               of CO in the          or 5 years,
                               stationary RICE       whichever comes
                               exhaust, and not      first, for CO or
                               using an oxidation    formaldehyde, as
                               catalyst.             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    a. Install an         i. Conducting annual
 4SLB stationary RICE >500     oxidation catalyst.   compliance
 HP located at an area                               demonstrations as
 source of HAP that are not                          specified in Sec.
 remote stationary RICE and                          63.6640(c) to show
 that are operated more than                         that the average
 24 hours per calendar year.                         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; 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
                                                     limitation of
                                                     greater than 450
                                                     [deg]F and less
                                                     than or equal to
                                                     1350 [deg]F 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    a. Install NSCR.....  i. Conducting annual
 4SRB stationary RICE >500                           compliance
 HP located at an area                               demonstrations as
 source of HAP that are not                          specified in Sec.
 remote stationary RICE and                          63.6640(c) to show
 that are operated more than                         that the average
 24 hours per calendar year.                         reduction of
                                                     emissions of CO is
                                                     75 percent or more,
                                                     the average CO
                                                     concentration is
                                                     less than or equal
                                                     to 270 ppmvd at 15
                                                     percent O2, 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
                                                     limitation of
                                                     greater than or
                                                     equal to 750 [deg]F
                                                     and less than or
                                                     equal to 1250
                                                     [deg]F 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.

0
37. 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.
4. Emergency stationary RICE that      Report.................  a. The information in    i. annually according
 operate or are contractually                                    Sec.   63.6650(h)(1).    to the requirements in
 obligated to be available for more                                                       Sec.   63.6650(h)(2)-
 than 15 hours per year for the                                                           (3).
 purposes specified in Sec.
 63.6640(f)(2)(ii) and (iii) or that
 operate for the purposes specified
 in Sec.   63.6640(f)(4)( ii).
----------------------------------------------------------------------------------------------------------------

0
38. Table 8 to Subpart ZZZZ of Part 63 is amended by:
0
a. Revising the entry for Sec.  63.8(c)(1)(i);
0
b. Revising the entry for Sec.  63.8(c)(1)(iii); and
0
c. Revising the entry for Sec.  63.10(b)(1) to read as follows:
    As stated in Sec.  63.6665, you must comply with the following
applicable general provisions.

             Table 8 to Subpart ZZZZ of Part 63--Applicability of General Provisions to Subpart ZZZZ
----------------------------------------------------------------------------------------------------------------
    General Provisions Citation         Subject of Citation      Applies to  Subpart          Explanation
----------------------------------------------------------------------------------------------------------------

                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------
Sec.   63.8(c)(1)(i)..............  Routine and predictable     No...................  .........................
                                     SSM.
----------------------------------------------------------------------------------------------------------------

                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------
Sec.   63.8(c)(1)(iii)............  Compliance with operation   No...................  .........................
                                     and maintenance
                                     requirements.
----------------------------------------------------------------------------------------------------------------

                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------
Sec.   63.10(b)(1)................  Record retention..........  Yes..................  Except that the most
                                                                                recent 2 years of data
                                                                                do not have to be
                                                                                retained on site.
----------------------------------------------------------------------------------------------------------------

                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------

0
39. 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
                                                  limit should be 2
                                                  percent of the nominal
                                                  range or 1 ppm,
                                                  whichever is less
                                                  restrictive.
Oxygen (O2)....................       7782-44-7
------------------------------------------------------------------------

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 that 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