rejuvenation using pH
                                                                                strips at least three
                                                                                times during each test
                                                                                run. Determine and
                                                                                record the average pH
                                                                                level for each test
                                                                                run. Determine and
                                                                                record the minimum
                                                                                test run average pH
                                                                                level.
                                                                iii. Alternative         Measure and record the
                                                                 alkalinity method in     alkalinity water (or
                                                                 Sec.   63.1573(c)(2).    scrubbing liquid)
                                                                                exiting the internal
                                                                                scrubbing system
                                                                                during coke burn-off
                                                                                and catalyst
                                                                                rejuvenation using
                                                                                discrete titration at
                                                                                least three times
                                                                                during each test run.
                                                                                Determine and record
                                                                                the average alkalinity
                                                                                level for each test
                                                                                run. Determine and
                                                                                record the minimum
                                                                                test run average
                                                                                alkalinity level.

                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------
\1\ The EPA Methods 5050, 9056, 9212 and 9253 are included in ``Test Methods for Evaluating Solid Waste,
  Physical/Chemical Methods,'' EPA Publication SW-846, Revision 5 (April 1998). The SW-846 and Updates (document
  number<PHONE_NUMBER>0-1) are available for purchase from the Superintendent of Documents, U.S. Government
  Printing Office, Washington, DC 20402,<PHONE_NUMBER>; and from the National Technical Information Services
  (NTIS), 5285 Port Royal Road, Springfield, VA 22161,<PHONE_NUMBER>. Copies may be inspected at the EPA Docket
  Center, William Jefferson Clinton (WJC) West Building (Air Docket), Room 3334, 1301 Constitution Ave. NW.,
  Washington, DC; or at the Office of the Federal Register, 800 North Capitol Street NW., Suite 700, Washington,
  DC. These methods are also available at http://www.epa.gov/epaoswer/hazwaste/test/main.htm.

0
76. Table 28 to subpart UUU of part 63 is amended by revising the entry
for item 5 and footnotes 1 and 3 to read as follows:
* * * * *

Table 28 to Subpart UUU of Part 63--Continuous Compliance With Operating
    Limits for Inorganic HAP Emissions From Catalytic Reforming Units
------------------------------------------------------------------------
                                                          You shall
                                                         demonstrate
  For each new and existing                              continuous
  catalytic reforming unit     For this operating     compliance during
 using this type of control        limit . . .        coke burn-off and
   device or  system . . .                                catalyst
                                                     rejuvenation by . .
                                                              .
------------------------------------------------------------------------

                              * * * * * * *
5. Moving-bed gas-solid       a. The daily average  Collecting the
 adsorption system (e.g.,      temperature of the    hourly and daily
 ChlorsorbTM System).          gas entering or       average temperature
                               exiting the           monitoring data
                               adsorption system     according to Sec.
                               must not exceed the   63.1572; and
                               limit established     maintaining the
                               during the            daily average
                               performance test.     temperature below
                                                     the operating limit
                                                     established during
                                                     the performance
                                                     test.
                              b. The weekly         Collecting samples
                               average chloride      of the sorbent
                               level on the          exiting the
                               sorbent entering      adsorption system
                               the adsorption        three times per
                               system must not       week (on non-
                               exceed the design     consecutive days);
                               or manufacturer's     and analyzing the
                               recommended limit     samples for total
                               (1.35 weight          chloride\3\; and
                               percent for the       determining and
                               Chlorsorb\TM\         recording the
                               System).              weekly average
                                                     chloride
                                                     concentration; and
                                                     maintaining the
                                                     chloride
                                                     concentration below
                                                     the design or
                                                     manufacturer's
                                                     recommended limit
                                                     (1.35 weight
                                                     percent for the
                                                     Chlorsorb\TM\
                                                     System).
                              c. The weekly         Collecting samples
                               average chloride      of the sorbent
                               level on the          exiting the
                               sorbent exiting the   adsorption system
                               adsorption system     three times per
                               must not exceed the   week (on non-
                               design or             consecutive days);
                               manufacturer's        and analyzing the
                               recommended limit     samples for total
                               (1.8 weight percent   chloride
                               for the               concentration; and
                               Chlorsorb\TM\         determining and
                               System).              recording the
                                                     weekly average
                                                     chloride
                                                     concentration; and
                                                     maintaining the
                                                     chloride
                                                     concentration below
                                                     the design or
                                                     manufacturer's
                                                     recommended limit
                                                     (1.8 weight percent
                                                     Chlorsorb\TM\
                                                     System).
------------------------------------------------------------------------
\1\ If applicable, you can use either alternative in Sec.   63.1573(c)
  instead of a continuous parameter monitoring system for pH or
  alkalinity if you used the alternative method in the initial
  performance test.
 * * * * * * *
\3\ The total chloride concentration of the sorbent material must be
  measured by the procedure, ``Determination of Metal Concentration on
  Catalyst Particles (Instrumental Analyzer Procedure)'' in appendix A
  to this subpart; or by using EPA Method 5050, Bomb Preparation Method
  for Solid Waste, combined either with EPA Method 9056, Determination
  of Inorganic Anions by Ion Chromatography, or with EPA Method 9253,
  Chloride (Titrimetric, Silver Nitrate); or by using EPA Method 9212,
  Potentiometric Determination of Chloride in Aqueous Samples with Ion-
  Selective Electrode, and using the soil extraction procedures listed
  within the method. The EPA Methods 5050, 9056, 9212 and 9253 are
  included in ``Test Methods for Evaluating Solid Waste, Physical/
  Chemical Methods,'' EPA Publication SW-846, Revision 5 (April 1998).
  The SW-846 and Updates (document number<PHONE_NUMBER>0-1) are available
  for purchase from the Superintendent of Documents, U.S. Government
  Printing Office, Washington, DC 20402,<PHONE_NUMBER>; and from the
  National Technical Information Services (NTIS), 5285 Port Royal Road,
  Springfield, VA 22161,<PHONE_NUMBER>. Copies may be inspected at the
  EPA Docket Center, William Jefferson Clinton (WJC) West Building, (Air
  Docket), Room 3334, 1301 Constitution Ave. NW., Washington, DC; or at
  the Office of the Federal Register, 800 North Capitol Street NW.,
  Suite 700, Washington, DC. These methods are also available at http://www.epa.gov/epaoswer/hazwaste/test/main.htm.

0
77. Table 29 to subpart UUU of part 63 is revised to read as follows:
    As stated in Sec.  63.1568(a)(1), you shall meet each emission
limitation in the following table that applies to you.

   Table 29 to Subpart UUU of Part 63--HAP Emission Limits for Sulfur
                             Recovery Units
------------------------------------------------------------------------
                                           You shall meet this emission
               For . . .                 limit for each process vent . .
                                                        .
------------------------------------------------------------------------
1. Subject to NSPS. Each new or          a. 250 ppmv (dry basis) of
 existing Claus sulfur recovery unit      sulfur dioxide (SO2) at zero
 part of a sulfur recovery plant with     percent excess air, or
 design capacity greater than 20 long     concentration determined using
 tons per day (LTD) and subject to the    Equation 1 of 40 CFR
 NSPS for sulfur oxides in 40 CFR         60.102a(f)(1)(i), if you use
 60.104(a)(2) or 60.102a(f)(1).           an oxidation control system or
                                          if you use a reduction control
                                          system followed by
                                          incineration.
                                         b. 300 ppmv of reduced sulfur
                                          compounds calculated as ppmv
                                          SO2 (dry basis) at zero
                                          percent excess air, or
                                          concentration determined using
                                          Equation 1 of 40 CFR
                                          60.102a(f)(1)(i), if you use a
                                          reduction control system
                                          without incineration.
2. Option 1: Elect NSPS. Each new or     a. 250 ppmv (dry basis) of SO2
 existing sulfur recovery unit (Claus     at zero percent excess air, or
 or other type, regardless of size) not   concentration determined using
 subject to the NSPS for sulfur oxides    Equation 1 of 40 CFR
 in 40 CFR 60.104(a)(2) or                60.102a(f)(1)(i), if you use
 60.102a(f)(1).                           an oxidation control system or
                                          if you use a reduction control
                                          system followed by
                                          incineration.
                                         b. 300 ppmv of reduced sulfur
                                          compounds calculated as ppmv
                                          SO2 (dry basis) at zero
                                          percent excess air, or
                                          concentration determined using
                                          Equation 1 of 40 CFR
                                          60.102a(f)(1)(i), if you use a
                                          reduction control system
                                          without incineration.
3. Option 2: TRS limit. Each new or      300 ppmv of total reduced
 existing sulfur recovery unit (Claus     sulfur (TRS) compounds,
 or other type, regardless of size) not   expressed as an equivalent SO2
 subject to the NSPS for sulfur oxides    concentration (dry basis) at
 in 40 CFR 60.104(a)(2) or                zero percent oxygen.
 60.102a(f)(1).
------------------------------------------------------------------------

0
78. Table 30 to subpart UUU of part 63 is revised to read as follows:
    As stated in Sec.  63.1568(a)(2), you shall meet each operating
limit in the following table that applies to you.

 Table 30 to Subpart UUU of Part 63--Operating Limits for HAP Emissions
                       From Sulfur Recovery Units
------------------------------------------------------------------------
                                                     You shall meet this
          For . . .            If use this type of   operating limit . .
                              control device . . .            .
------------------------------------------------------------------------
1. Subject to NSPS. Each new  Not applicable......  Not applicable.
 or existing Claus sulfur
 recovery unit part of a
 sulfur recovery plant with
 design capacity greater
 than 20 LTD and subject to
 the NSPS for sulfur oxides
 in 40 CFR 60.104(a)(2) or
 60.102a(f)(1).
2. Option 1: Elect NSPS.      Not applicable......  Not applicable.
 Each new or existing sulfur
 recovery unit (Claus or
 other type, regardless of
 size) not subject to the
 NSPS for sulfur oxides in
 40 CFR 60.104(a)(2) or
 60.102a(f)(1).
3. Option 2: TRS limit, if    Not applicable......  Not applicable.
 using continuous emissions
 monitoring systems. Each
 new or existing sulfur
 recovery unit (Claus or
 other type, regardless of
 size) not subject to the
 NSPS for sulfur oxides in
 40 CFR 60.104(a)(2) or
 60.102a(f)(1).
4. Option 2: TRS limit, if    Thermal incinerator.  Maintain the daily
 using continuous parameter                          average combustion
 monitoring systems. Each                            zone temperature
 new or existing sulfur                              above the limit
 recovery unit (Claus or                             established during
 other type, regardless of                           the performance
 size) not subject to the                            test; and maintain
 NSPS for sulfur oxides in                           the daily average
 40 CFR 60.104(a)(2) or                              oxygen
 60.102a(f)(1).                                      concentration in
                                                     the vent stream
                                                     (percent, dry
                                                     basis) above the
                                                     limit established
                                                     during the
                                                     performance test.
5. Startup or shutdown        Flare...............  On and after January
 option 1: Electing to                               30, 2019, meet the
 comply with Sec.                                    applicable
 63.1568(a)(4)(ii). Each new                         requirements of
 or existing sulfur recovery                         Sec.   63.670.
 unit (Claus or other type,                          Prior to January
 regardless of size) during                          30, 2019, meet the
 periods of startup or                               applicable
 shutdown.                                           requirements of
                                                     either Sec.
                                                     63.11(b) or Sec.
                                                     63.670.
6. Startup or shutdown        Thermal incinerator   Maintain the hourly
 option 2: Electing to         or thermal oxidizer.  average combustion
 comply with Sec.                                    zone temperature at
 63.1568(a)(4)(iii). Each                            or above 1,200
 new or existing sulfur                              degrees Fahrenheit
 recovery unit (Claus or                             and maintain the
 other type, regardless of                           hourly average
 size) during startup or                             oxygen
 shutdown events.                                    concentration in
                                                     the exhaust gas
                                                     stream at or above
                                                     2 volume percent
                                                     (dry basis).
------------------------------------------------------------------------

0
79. Table 31 to subpart UUU is revised to read as follows:
    As stated in Sec.  63.1568(b)(1), you shall meet each requirement
in the following table that applies to you.

  Table 31 to Subpart UUU of Part 63--Continuous Monitoring Systems for
                HAP Emissions From Sulfur Recovery Units
------------------------------------------------------------------------
                                                      You shall install
                                                      and operate this
          For . . .           For this limit . . .       continuous
                                                     monitoring system .
                                                             . .
------------------------------------------------------------------------
1. Subject to NSPS. Each new  a. 250 ppmv (dry      Continuous emission
 or existing Claus sulfur      basis) of SO2 at      monitoring system
 recovery unit part of a       zero percent excess   to measure and
 sulfur recovery plant with    air if you use an     record the hourly
 design capacity greater       oxidation or          average
 than 20 LTD and subject to    reduction control     concentration of
 the NSPS for sulfur oxides    system followed by    SO2 (dry basis) at
 in 40 CFR 60.104(a)(2) or     incineration.         zero percent excess
 60.102a(f)(1).                                      air for each
                                                     exhaust stack. This
                                                     system must include
                                                     an oxygen monitor
                                                     for correcting the
                                                     data for excess
                                                     air.

                              b. 300 ppmv of        Continuous emission
                               reduced sulfur        monitoring system
                               compounds             to measure and
                               calculated as ppmv    record the hourly
                               SO2 (dry basis) at    average
                               zero percent excess   concentration of
                               air if you use a      reduced sulfur and
                               reduction control     oxygen (O2)
                               system without        emissions.
                               incineration.         Calculate the
                                                     reduced sulfur
                                                     emissions as SO2
                                                     (dry basis) at zero
                                                     percent excess air.
                                                     Exception: You can
                                                     use an instrument
                                                     having an air or
                                                     SO2 dilution and
                                                     oxidation system to
                                                     convert the reduced
                                                     sulfur to SO2 for
                                                     continuously
                                                     monitoring and
                                                     recording the
                                                     concentration (dry
                                                     basis) at zero
                                                     percent excess air
                                                     of the resultant
                                                     SO2 instead of the
                                                     reduced sulfur
                                                     monitor. The
                                                     monitor must
                                                     include an oxygen
                                                     monitor for
                                                     correcting the data
                                                     for excess oxygen.
                              c. If you use         i. Complete either
                               Equation 1 of 40      item 1.a or item
                               CFR                   1.b; and
                               60.102a(f)(1)(i) to  ii. Either a
                               set your emission     continuous emission
                               limit.                monitoring system
                                                     to measure and
                                                     record the O2
                                                     concentration for
                                                     the inlet air/
                                                     oxygen supplied to
                                                     the system or a
                                                     continuous
                                                     parameter
                                                     monitoring system
                                                     to measure and
                                                     record the
                                                     volumetric gas flow
                                                     rate of ambient air
                                                     and purchased
                                                     oxygen-enriched
                                                     gas.
2. Option 1: Elect NSPS.      a. 250 ppmv (dry      Continuous emission
 Each new or existing sulfur   basis) of SO2 at      monitoring system
 recovery unit (Claus or       zero percent excess   to measure and
 other type, regardless of     air if you use an     record the hourly
 size) not subject to the      oxidation or          average
 NSPS for sulfur oxides in     reduction control     concentration of
 40 CFR 60.104(a)(2) or        system followed by    SO2 (dry basis), at
 60.102a(f)(1).                incineration.         zero percent excess
                                                     air for each
                                                     exhaust stack. This
                                                     system must include
                                                     an oxygen monitor
                                                     for correcting the
                                                     data for excess
                                                     air.
                              b. 300 ppmv of        Continuous emission
                               reduced sulfur        monitoring system
                               compounds             to measure and
                               calculated as ppmv    record the hourly
                               SO2 (dry basis) at    average
                               zero percent excess   concentration of
                               air if you use a      reduced sulfur and
                               reduction control     O2 emissions for
                               system without        each exhaust stack.
                               incineration.         Calculate the
                                                     reduced sulfur
                                                     emissions as SO2
                                                     (dry basis), at
                                                     zero percent excess
                                                     air. Exception: You
                                                     can use an
                                                     instrument having
                                                     an air or O2
                                                     dilution and
                                                     oxidation system to
                                                     convert the reduced
                                                     sulfur to SO2 for
                                                     continuously
                                                     monitoring and
                                                     recording the
                                                     concentration (dry
                                                     basis) at zero
                                                     percent excess air
                                                     of the resultant
                                                     SO2 instead of the
                                                     reduced sulfur
                                                     monitor. The
                                                     monitor must
                                                     include an oxygen
                                                     monitor for
                                                     correcting the data
                                                     for excess oxygen.
                              c. If you use         i. Complete either
                               Equation 1 of 40      item 2.a or item
                               CFR                   2.b; and
                               60.102a(f)(1)(i) to  ii. Either a
                               set your emission     continuous emission
                               limit.                monitoring system
                                                     to measure and
                                                     record the O2
                                                     concentration for
                                                     the inlet air/
                                                     oxygen supplied to
                                                     the system, or a
                                                     continuous
                                                     parameter
                                                     monitoring system
                                                     to measure and
                                                     record the
                                                     volumetric gas flow
                                                     rate of ambient air
                                                     and purchased
                                                     oxygen-enriched
                                                     gas.
3. Option 2: TRS limit. Each  a. 300 ppmv of total  i. Continuous
 new or existing sulfur        reduced sulfur        emission monitoring
 recovery unit (Claus or       (TRS) compounds,      system to measure
 other type, regardless of     expressed as an       and record the
 size) not subject to the      equivalent SO2        hourly average
 NSPS for sulfur oxides in     concentration (dry    concentration of
 40 CFR 60.104(a)(2) or        basis) at zero        TRS for each
 60.102a(f)(1).                percent oxygen.       exhaust stack; this
                                                     monitor must
                                                     include an oxygen
                                                     monitor for
                                                     correcting the data
                                                     for excess oxygen;
                                                     or
                                                    ii. Continuous
                                                     parameter
                                                     monitoring systems
                                                     to measure and
                                                     record the
                                                     combustion zone
                                                     temperature of each
                                                     thermal incinerator
                                                     and the oxygen
                                                     content (percent,
                                                     dry basis) in the
                                                     vent stream of the
                                                     incinerator.

4. Startup or shutdown        Any.................  On and after January
 option 1: electing to                               30, 2019,
 comply with Sec.                                    monitoring systems
 63.1568(a)(4)(ii). Each new                         as specified in
 or existing sulfur recovery                         Sec.  Sec.   63.670
 unit (Claus or other type,                          and 63.671. Prior
 regardless of size) during                          to January 30,
 periods of startup or                               2019, either
 shutdown.                                           continuous
                                                     parameter
                                                     monitoring systems
                                                     following the
                                                     requirements in
                                                     Sec.   63.11 (to
                                                     detect the presence
                                                     of a flame; to
                                                     measure and record
                                                     the net heating
                                                     value of the gas
                                                     being combusted;
                                                     and to measure and
                                                     record the
                                                     volumetric flow of
                                                     the gas being
                                                     combusted) or
                                                     monitoring systems
                                                     as specified in
                                                     Sec.  Sec.   63.670
                                                     and 63.671.
5. Startup or shutdown        Any.................  Continuous parameter
 option 2: electing to                               monitoring systems
 comply with Sec.                                    to measure and
 63.1568(a)(4)(iii). Each                            record the firebox
 new or existing sulfur                              temperature of each
 recovery unit (Claus or                             thermal incinerator
 other type, regardless of                           or oxidizer and the
 size) during periods of                             oxygen content
 startup or shutdown.                                (percent, dry
                                                     basis) in the
                                                     exhaust vent from
                                                     the incinerator or
                                                     oxidizer.
------------------------------------------------------------------------

0
80. Table 32 to subpart UUU of part 63 is revised to read as follows:
    As stated in Sec.  63.1568(b)(2) and (3), you shall meet each
requirement in the following table that applies to you.

  Table 32 to Subpart UUU of Part 63--Requirements for Performance Tests for HAP Emissions From Sulfur Recovery
                   Units Not Subject to the New Source Performance Standards for Sulfur Oxides
----------------------------------------------------------------------------------------------------------------
                                                                                According to these
              For . . .                     You must . . .            Using . . .           requirements . . .
----------------------------------------------------------------------------------------------------------------
1. Option 1: Elect NSPS. Each new and  a. Measure SO2           Data from continuous     Collect SO2 monitoring
 existing sulfur recovery unit.         concentration (for an    emission monitoring      data every 15 minutes
                                        oxidation or reduction   system.                  for 24 consecutive
                                        system followed by                                operating hours.
                                        incineration) or                                  Reduce the data to 1-
                                        measure the                                       hour averages computed
                                        concentration of                                  from four or more data
                                        reduced sulfur (or SO2                            points equally spaced
                                        if you use an                                     over each 1-hour
                                        instrument to convert                             period.
                                        the reduced sulfur to
                                        SO2) for a reduction
                                        control system without
                                        incineration.
                                       b. Measure O2            i. Data from continuous  Collect O2 monitoring
                                        concentration for the    emission monitoring      data every 15 minutes
                                        inlet air/oxygen         system; or               for 24 consecutive
                                        supplied to the                                   operating hours.
                                        system, if using                                  Reduce the data to 1-
                                        Equation 1 of 40 CFR                              hour averages computed
                                        60.102a(f)1)(i) to set                            from four or more data
                                        your emission limit.                              points equally spaced
                                        You may use either an                             over each 1-hour
                                        O2 CEMS method in item                            period; and average
                                        1.b.i of this table or                            over the 24-hour
                                        the flow monitor in                               period for input to
                                        item 1.b.ii of this                               Equation 1 of 40 CFR
                                        table.                                            60.102a(f)(1)(i).
                                                                ii. Data from flow       Collect gas flow rate
                                                                 monitor for ambient      monitoring data every
                                                                 air and purchased        15 minutes for 24
                                                                 oxygen-enriched gas.     consecutive operating
                                                                                hours. Reduce the data
                                                                                to 1-hour averages
                                                                                computed from 4 or
                                                                                more data points
                                                                                equally spaced over
                                                                                each 1-hour period;
                                                                                calculate the hourly
                                                                                O2 percent using
                                                                                Equation 10 of 40 CFR
                                                                                60.106a(a)(6)(iv); and
                                                                                average over the 24-
                                                                                hour period for input
                                                                                to Equation 1 of 40
                                                                                CFR 60.102a(f)(1)(i).
2. Option 2: TRS limit, using CEMS.    Measure the              Data from continuous     Collect TRS data every
 Each new and existing sulfur           concentration of         emission monitoring      15 minutes for 24
 recovery unit.                         reduced sulfur (or SO2   system.                  consecutive operating
                                        if you use an                                     hours. Reduce the data
                                        instrument to convert                             to 1-hour averages
                                        the reduced sulfur to                             computed from four or
                                        SO2).                                             more data points
                                                                                equally spaced over
                                                                                each 1-hour period.

3. Option 2: TRS limit, if using       a. Select sampling       Method 1 or 1A in        Sampling sites must be
 continuous parameter monitoring        port's location and      Appendix A-1 to part     located at the outlet
 systems. Each new and existing         the number of traverse   60 of this chapter.      of the control device
 sulfur recovery unit.                  ports.                                            and prior to any
                                                                                releases to the
                                                                                atmosphere.
                                       b. Determine velocity    Method 2, 2A, 2C, 2D,    .......................
                                        and volumetric flow      or 2F in appendix A-1
                                        rate.                    to part 60 of this
                                                                 chapter, or Method 2G
                                                                 in appendix A-2 to
                                                                 part 60 of this
                                                                 chapter, as applicable.
                                       c. Conduct gas           Method 3, 3A, or 3B in   Take the samples
                                        molecular weight         appendix A-2 to part     simultaneously with
                                        analysis; obtain the     60 of this chapter, as   reduced sulfur or
                                        oxygen concentration     applicable.              moisture samples.
                                        needed to correct the
                                        emission rate for
                                        excess air.
                                       d. Measure moisture      Method 4 in appendix A-  Make your sampling time
                                        content of the stack     3 to part 60 of this     for each Method 4
                                        gas.                     chapter.                 sample equal to that
                                                                                for 4 Method 15
                                                                                samples.
                                       e. Measure the           Method 15 or 15A in      If the cross-sectional
                                        concentration of TRS.    appendix A-5 to part     area of the duct is
                                                                 60 of this chapter, as   less than 5 square
                                                                 applicable.              meters (m2) or 54
                                                                                square feet, you must
                                                                                use the centroid of
                                                                                the cross section as
                                                                                the sampling point. If
                                                                                the cross-sectional
                                                                                area is 5 m2 or more
                                                                                and the centroid is
                                                                                more than 1 meter (m)
                                                                                from the wall, your
                                                                                sampling point may be
                                                                                at a point no closer
                                                                                to the walls than 1 m
                                                                                or 39 inches. Your
                                                                                sampling rate must be
                                                                                at least 3 liters per
                                                                                minute or 0.10 cubic
                                                                                feet per minute to
                                                                                ensure minimum
                                                                                residence time for the
                                                                                sample inside the
                                                                                sample lines.
                                       f. Calculate the SO2     The arithmetic average   .......................
                                        equivalent for each      of the SO2 equivalent
                                        run after correcting     for each sample during
                                        for moisture and         the run.
                                        oxygen.
                                       g. Correct the reduced   Equation 1 of Sec.       .......................
                                        sulfur samples to zero   63.1568.
                                        percent excess air.
                                       h. Establish each        Data from the            .......................
                                        operating limit in       continuous parameter
                                        Table 30 of this         monitoring system.
                                        subpart that applies
                                        to you.
                                       i. Measure thermal       Data from the            Collect temperature
                                        incinerator:             continuous parameter     monitoring data every
                                        combustion zone          monitoring system.       15 minutes during the
                                        temperature.                                      entire period of the
                                                                                performance test; and
                                                                                determine and record
                                                                                the minimum hourly
                                                                                average temperature
                                                                                from all the readings.
                                       j. Measure thermal       Data from the            Collect oxygen
                                        incinerator: oxygen      continuous parameter     concentration
                                        concentration            monitoring system.       (percent, dry basis)
                                        (percent, dry basis)                              data every 15 minutes
                                        in the vent stream.                               during the entire
                                                                                period of the
                                                                                performance test; and
                                                                                determine and record
                                                                                the minimum hourly
                                                                                average percent excess
                                                                                oxygen concentration.
----------------------------------------------------------------------------------------------------------------

0
81. Table 33 to subpart UUU of part 63 is revised to read as follows:
    As stated in Sec.  63.1568(b)(5), you shall meet each requirement
in the following table that applies to you.

Table 33 to Subpart UUU of Part 63--Initial Compliance With HAP Emission
                    Limits for Sulfur Recovery Units
------------------------------------------------------------------------
                                                          You have
          For . . .             For the following   demonstrated initial
                              emission limit . . .   compliance if . . .
------------------------------------------------------------------------
1. Subject to NSPS: Each new  a. 250 ppmv (dry      You have already
 or existing Claus sulfur      basis) SO2 at zero    conducted a
 recovery unit part of a       percent excess air,   performance test to
 sulfur recovery plant with    or concentration      demonstrate initial
 design capacity greater       determined using      compliance with the
 than 20 LTD and subject to    Equation 1 of 40      NSPS and each 12-
 the NSPS for sulfur oxides    CFR                   hour rolling
 in 40 CFR 60.104(a)(2) or     60.102a(f)(1)(i),     average
 60.102a(f)(1).                if you use an         concentration of
                               oxidation or          SO2 emissions
                               reduction control     measured by the
                               system followed by    continuous emission
                               incineration.         monitoring system
                                                     is less than or
                                                     equal to 250 ppmv
                                                     (dry basis) at zero
                                                     percent excess air,
                                                     or the
                                                     concentration
                                                     determined using
                                                     Equation 1 of 40
                                                     CFR
                                                     60.102a(f)(1)(i).
                                                     As part of the
                                                     Notification of
                                                     Compliance Status,
                                                     you must certify
                                                     that your vent
                                                     meets the SO2
                                                     limit. You are not
                                                     required to do
                                                     another performance
                                                     test to demonstrate
                                                     initial compliance.
                                                    You have already
                                                     conducted a
                                                     performance
                                                     evaluation to
                                                     demonstrate initial
                                                     compliance with the
                                                     applicable
                                                     performance
                                                     specification. As
                                                     part of your
                                                     Notification of
                                                     Compliance Status,
                                                     you must certify
                                                     that your
                                                     continuous emission
                                                     monitoring system
                                                     meets the
                                                     applicable
                                                     requirements in
                                                     Sec.   63.1572. You
                                                     are not required to
                                                     do another
                                                     performance
                                                     evaluation to
                                                     demonstrate initial
                                                     compliance.
                              b. 300 ppmv of        You have already
                               reduced sulfur        conducted a
                               compounds             performance test to
                               calculated as ppmv    demonstrate initial
                               SO2 (dry basis) at    compliance with the
                               zero percent excess   NSPS and each 12-
                               air, or               hour rolling
                               concentration         average
                               determined using      concentration of
                               Equation 1 of 40      reduced sulfur
                               CFR                   compounds measured
                               60.102a(f)(1)(i),     by your continuous
                               if you use a          emission monitoring
                               reduction control     system is less than
                               system without        or equal to 300
                               incineration.         ppmv, calculated as
                                                     ppmv SO2 (dry
                                                     basis) at zero
                                                     percent excess air,
                                                     or the
                                                     concentration
                                                     determined using
                                                     Equation 1 of 40
                                                     CFR
                                                     60.102a(f)(1)(i).
                                                     As part of the
                                                     Notification of
                                                     Compliance Status,
                                                     you must certify
                                                     that your vent
                                                     meets the SO2
                                                     limit. You are not
                                                     required to do
                                                     another performance
                                                     test to demonstrate
                                                     initial compliance.
                                                    You have already
                                                     conducted a
                                                     performance
                                                     evaluation to
                                                     demonstrate initial
                                                     compliance with the
                                                     applicable
                                                     performance
                                                     specification. As
                                                     part of your
                                                     Notification of
                                                     Compliance Status,
                                                     you must certify
                                                     that your
                                                     continuous emission
                                                     monitoring system
                                                     meets the
                                                     applicable
                                                     requirements in
                                                     Sec.   63.1572. You
                                                     are not required to
                                                     do another
                                                     performance
                                                     evaluation to
                                                     demonstrate initial
                                                     compliance.
2. Option 1: Elect NSPS.      a. 250 ppmv (dry      Each 12-hour rolling
 Each new or existing sulfur   basis) of SO2 at      average
 recovery unit (Claus or       zero percent excess   concentration of
 other type, regardless of     air, or               SO2 emissions
 size) not subject to the      concentration         measured by the
 NSPS for sulfur oxides in     determined using      continuous emission
 40 CFR 60.104(a)(2) or        Equation 1 of 40      monitoring system
 60.102a(f)(1).                CFR                   during the initial
                               60.102a(f)(1)(i),     performance test is
                               if you use an         less than or equal
                               oxidation or          to 250 ppmv (dry
                               reduction control     basis) at zero
                               system followed by    percent excess air,
                               incineration.         or the
                                                     concentration
                                                     determined using
                                                     Equation 1 of 40
                                                     CFR
                                                     60.102a(f)(1)(i);
                                                     and your
                                                     performance
                                                     evaluation shows
                                                     the monitoring
                                                     system meets the
                                                     applicable
                                                     requirements in
                                                     Sec.   63.1572.
                              b. 300 ppmv of        Each 12-hour rolling
                               reduced sulfur        average
                               compounds             concentration of
                               calculated as ppmv    reduced sulfur
                               SO2 (dry basis) at    compounds measured
                               zero percent excess   by the continuous
                               air, or               emission monitoring
                               concentration         system during the
                               determined using      initial performance
                               Equation 1 of 40      test is less than
                               CFR                   or equal to 300
                               60.102a(f)(1)(i),     ppmv, calculated as
                               if you use a          ppmv SO2 (dry
                               reduction control     basis) at zero
                               system without        percent excess air,
                               incineration.         or the
                                                     concentration
                                                     determined using
                                                     Equation 1 of 40
                                                     CFR
                                                     60.102a(f)(1)(i);
                                                     and your
                                                     performance
                                                     evaluation shows
                                                     the continuous
                                                     emission monitoring
                                                     system meets the
                                                     applicable
                                                     requirements in
                                                     Sec.   63.1572.

3. Option 2: TRS limit. Each  300 ppmv of TRS       If you use
 new or existing sulfur        compounds expressed   continuous
 recovery unit (Claus or       as an equivalent      parameter
 other type, regardless of     SO2 concentration     monitoring systems,
 size) not subject to the      (dry basis) at zero   the average
 NSPS for sulfur oxides in     percent oxygen.       concentration of
 40 CFR 60.104(a)(2) or                              TRS emissions
 60.102a(f)(1).                                      measured using
                                                     Method 15 during
                                                     the initial
                                                     performance test is
                                                     less than or equal
                                                     to 300 ppmv
                                                     expressed as
                                                     equivalent SO2
                                                     concentration (dry
                                                     basis) at zero
                                                     percent oxygen. If
                                                     you use a
                                                     continuous emission
                                                     monitoring system,
                                                     each 12-hour
                                                     rolling average
                                                     concentration of
                                                     TRS emissions
                                                     measured by the
                                                     continuous emission
                                                     monitoring system
                                                     during the initial
                                                     performance test is
                                                     less than or equal
                                                     to 300 ppmv
                                                     expressed as an
                                                     equivalent SO2 (dry
                                                     basis) at zero
                                                     percent oxygen; and
                                                     your performance
                                                     evaluation shows
                                                     the continuous
                                                     emission monitoring
                                                     system meets the
                                                     applicable
                                                     requirements in
                                                     Sec.   63.1572.
------------------------------------------------------------------------

0
82. Table 34 to subpart UUU of part 63 is revised to read as follows:
    As stated in Sec.  63.1568(c)(1), you shall meet each requirement
in the following table that applies to you.

   Table 34 to Subpart UUU of Part 63--Continuous Compliance With HAP
                Emission Limits for Sulfur Recovery Units
------------------------------------------------------------------------
                                                          You shall
                                For this emission        demonstrate
          For . . .                limit . . .           continuous
                                                     compliance by . . .
------------------------------------------------------------------------
1. Subject to NSPS. Each new  a. 250 ppmv (dry      Collecting the
 or existing Claus sulfur      basis) of SO2 at      hourly average SO2
 recovery unit part of a       zero percent excess   monitoring data
 sulfur recovery plant with    air, or               (dry basis, percent
 design capacity greater       concentration         excess air) and, if
 than 20 LTD and subject to    determined using      using Equation 1 of
 the NSPS for sulfur oxides    Equation 1 of 40      40 CFR
 in 40 CFR 60.104(a)(2) or     CFR                   60.102a(f)(1)(i),
 60.102a(f)(1).                60.102a(f)(1)(i),     collecting the
                               if you use an         hourly O2
                               oxidation or          concentration or
                               reduction control     flow monitoring
                               system followed by    data according to
                               incineration.         Sec.   63.1572;
                                                     determining and
                                                     recording each 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     SO2; maintaining
                                                     each 12-hour
                                                     rolling average
                                                     concentration of
                                                     SO2 at or below the
                                                     applicable emission
                                                     limitation; and
                                                     reporting any 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     SO2 greater than
                                                     the applicable
                                                     emission limitation
                                                     in the semiannual
                                                     compliance report
                                                     required by Sec.
                                                     63.1575.
                              b. 300 ppmv of        Collecting the
                               reduced sulfur        hourly average
                               compounds             reduced sulfur (and
                               calculated as ppmv    air or O2 dilution
                               SO2 (dry basis) at    and oxidation)
                               zero percent excess   monitoring data
                               air, or               and, if using
                               concentration         Equation 1 of 40
                               determined using      CFR
                               Equation 1 of 40      60.102a(f)(1)(i),
                               CFR                   collecting the
                               60.102a(f)(1)(i),     hourly O2
                               if you use a          concentration or
                               reduction control     flow monitoring
                               system without        data according to
                               incineration.         Sec.   63.1572;
                                                     determining and
                                                     recording each 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     reduced sulfur;
                                                     maintaining each 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     reduced sulfur at
                                                     or below the
                                                     applicable emission
                                                     limitation; and
                                                     reporting any 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     reduced sulfur
                                                     greater than the
                                                     applicable emission
                                                     limitation in the
                                                     semiannual
                                                     compliance report
                                                     required by Sec.
                                                     63.1575.

2. Option 1: Elect NSPS.      a. 250 ppmv (dry      Collecting the
 Each new or existing sulfur   basis) of SO2 at      hourly average SO2
 recovery unit (Claus or       zero percent excess   data (dry basis,
 other type, regardless of     air, or               percent excess air)
 size) not subject to the      concentration         and, if using
 NSPS for sulfur oxides in     determined using      Equation 1 of 40
 40 CFR 60.104(a)(2) or        Equation 1 of 40      CFR
 60.102a(f)(1).                CFR                   60.102a(f)(1)(i),
                               60.102a(f)(1)(i),     collecting the
                               if you use an         hourly O2
                               oxidation or          concentration or
                               reduction control     flow monitoring
                               system followed by    data according to
                               incineration.         Sec.   63.1572;
                                                     determining and
                                                     recording each 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     SO2; maintaining
                                                     each 12-hour
                                                     rolling average
                                                     concentration of
                                                     SO2 at or below the
                                                     applicable emission
                                                     limitation; and
                                                     reporting any 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     SO2 greater than
                                                     the applicable
                                                     emission limitation
                                                     in the semiannual
                                                     compliance report
                                                     required by Sec.
                                                     63.1575.
                              b. 300 ppmv of        Collecting the
                               reduced sulfur        hourly average
                               compounds             reduced sulfur (and
                               calculated as ppmv    air or O2 dilution
                               SO2 (dry basis) at    and oxidation)
                               zero percent excess   monitoring data
                               air, or               and, if using
                               concentration         Equation 1 of 40
                               determined using      CFR
                               Equation 1 of 40      60.102a(f)(1)(i),
                               CFR                   collecting the
                               60.102a(f)(1)(i),     hourly O2
                               if you use a          concentration or
                               reduction control     flow monitoring
                               system without        data according to
                               incineration.         Sec.   63.1572;
                                                     determining and
                                                     recording each 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     reduced sulfur;
                                                     maintaining each 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     reduced sulfur at
                                                     or below the
                                                     applicable emission
                                                     limitation; and
                                                     reporting any 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     reduced sulfur
                                                     greater than the
                                                     applicable emission
                                                     limitation in the
                                                     semiannual
                                                     compliance report
                                                     required by Sec.
                                                     63.1575.
3. Option 2: TRS limit. Each  300 ppmv of TRS       i. If you use
 new or existing sulfur        compounds,            continuous
 recovery unit (Claus or       expressed as an SO2   parameter
 other type, regardless of     concentration (dry    monitoring systems,
 size) not subject to the      basis) at zero        collecting the
 NSPS for sulfur oxides in     percent oxygen or     hourly average TRS
 40 CFR 60.104(a)(2) or        reduced sulfur        monitoring data
 60.102a(f)(1).                compounds             according to Sec.
                               calculated as ppmv    63.1572 and
                               SO2 (dry basis) at    maintaining each 12-
                               zero percent excess   hour average
                               air.                  concentration of
                                                     TRS at or below the
                                                     applicable emission
                                                     limitation; or
                                                    ii. If you use a
                                                     continuous emission
                                                     monitoring system,
                                                     collecting the
                                                     hourly average TRS
                                                     monitoring data
                                                     according to Sec.
                                                     63.1572,
                                                     determining and
                                                     recording each 12-
                                                     hour rolling
                                                     average
                                                     concentration of
                                                     TRS; maintaining
                                                     each 12-hour
                                                     rolling average
                                                     concentration of
                                                     TRS at or below the
                                                     applicable emission
                                                     limitation; and
                                                     reporting any 12-
                                                     hour rolling
                                                     average TRS
                                                     concentration
                                                     greater than the
                                                     applicable emission
                                                     limitation in the
                                                     semiannual
                                                     compliance report
                                                     required by Sec.
                                                     63.1575.
------------------------------------------------------------------------

0
83. Table 35 to subpart UUU of part 63 is revised to read as follows:
    As stated in Sec.  63.1568(c)(1), you shall meet each requirement
in the following table that applies to you.

Table 35 to Subpart UUU of Part 63--Continuous Compliance With Operating
           Limits for HAP Emissions From Sulfur Recovery Units
------------------------------------------------------------------------
                                                          You shall
                               For this operating        demonstrate
          For . . .                limit . . .           continuous
                                                     compliance by . . .
------------------------------------------------------------------------
1. Subject to NSPS. Each new  Not applicable......  Meeting the
 or existing Claus sulfur                            requirements of
 recovery unit part of a                             Table 34 of this
 sulfur recovery plant with                          subpart.
 design capacity greater
 than 20 LTD and subject to
 the NSPS for sulfur oxides
 in 40 CFR 60.104(a)(2) or
 60.102a(f)(1).

2. Option 1: Elect NSPS.      Not applicable......  Meeting the
 Each new or existing sulfur                         requirements of
 recovery unit (Claus or                             Table 34 of this
 other type, regardless of                           subpart.
 size) not subject to the
 NSPS for sulfur oxides in
 40 CFR 60.104(a)(2) or
 60.102a(f)(1).
3. Option 2: TRS limit. Each  a. Maintain the       Collecting the
 new or existing sulfur        daily average         hourly and daily
 recovery unit (Claus or       combustion zone       average temperature
 other type, regardless of     temperature above     monitoring data
 size) not subject to the      the level             according to Sec.
 NSPS for sulfur oxides in     established during    63.1572; and
 40 CFR 60.104(a)(2) or        the performance       maintaining the
 60.102a(f)(1).                test.                 daily average
                                                     combustion zone
                                                     temperature at or
                                                     above the limit
                                                     established during
                                                     the performance
                                                     test
                              b. The daily average  Collecting the
                               oxygen                hourly and daily
                               concentration in      average O2
                               the vent stream       monitoring data
                               (percent, dry         according to Sec.
                               basis) must not       63.1572; and
                               fall below the        maintaining the
                               level established     average O2
                               during the            concentration above
                               performance test..    the level
                                                     established during
                                                     the performance
                                                     test.
4. Startup or shutdown        Using a flare         On and after January
 option 1: Electing to         meeting the           30, 2019, complying
 comply with Sec.              requirements in       with the applicable
 63.1568(a)(4)(ii). Each new   Sec.   63.11(b) or    requirements of
 or existing sulfur recovery   Sec.   63.670.        Sec.   63.670.
 unit (Claus or other type,                          Prior to January
 regardless of size) during                          30, 2019, complying
 periods of startup or                               with the applicable
 shutdown.                                           requirements of
                                                     either Sec.
                                                     63.11(b) or Sec.
                                                     63.670.
5. Startup or shutdown        a. Minimum hourly     Collecting
 option 2: Electing to         average temperature   continuous (at
 comply with Sec.              of 1,200 degrees      least once every 15
 63.1568(a)(4)(iii). Each      Fahrenheit.           minutes) and hourly
 new or existing sulfur                              average temperature
 recovery unit (Claus or                             monitoring data
 other type, regardless of                           according to Sec.
 size) during periods of                             63.1572; and
 startup or shutdown.                                maintaining the
                                                     daily average
                                                     firebox temperature
                                                     at or above 1,200
                                                     degrees Fahrenheit.
                              b. Minimum hourly     Collecting
                               average outlet        continuous (at
                               oxygen                least once every 15
                               concentration of 2    minutes) and hourly
                               volume percent (dry   average O2
                               basis).               monitoring data
                                                     according to Sec.
                                                     63.1572; and
                                                     maintaining the
                                                     average O2
                                                     concentration at or
                                                     above 2 volume
                                                     percent (dry
                                                     basis).
------------------------------------------------------------------------

0
84. Table 40 to subpart UUU of part 63 is revised to read as follows:
    As stated in Sec.  63.1572(a)(1) and (b)(1), you shall meet each
requirement in the following table that applies to you.

   Table 40 to Subpart UUU of Part 63--Requirements for Installation,
 Operation, and Maintenance of Continuous Opacity Monitoring Systems and
                 Continuous Emission Monitoring Systems
------------------------------------------------------------------------
   This type of continuous opacity or     Must meet these requirements .
    emission monitoring system . . .                   . .
------------------------------------------------------------------------
1. Continuous opacity monitoring system  Performance specification 1 (40
                                          CFR part 60, appendix B).
2. PM CEMS; this monitor must include    The requirements in 40 CFR
 an O2 monitor for correcting the data    60.105a(d).
 for excess air.
3. CO continuous emission monitoring     Performance specification 4 (40
 system.                                  CFR part 60, appendix B); span
                                          value of 1,000 ppm; and
                                          procedure 1 (40 CFR part 60,
                                          appendix F) except relative
                                          accuracy test audits are
                                          required annually instead of
                                          quarterly.
4. CO continuous emission monitoring     Performance specification 4 (40
 system used to demonstrate emissions     CFR part 60, appendix B); and
 average under 50 ppm (dry basis).        span value of 100 ppm.
5. SO2 continuous emission monitoring    Performance specification 2 (40
 system for sulfur recovery unit with     CFR part 60, appendix B); span
 oxidation control system or reduction    value of 500 ppm SO2, or if
 control system; this monitor must        using Equation 1 of 40 CFR
 include an O2 monitor for correcting     60.102a(f)(1)(i), span value
 the data for excess air.                 of two times the limit at the
                                          highest O2 concentration; use
                                          Methods 6 or 6C (40 CFR part
                                          60, appendix A-4) for
                                          certifying the SO2 monitor and
                                          Methods 3A or 3B (40 CFR part
                                          60, appendix A-2) for
                                          certifying the O2 monitor; and
                                          procedure 1 (40 CFR part 60,
                                          appendix F) except relative
                                          accuracy test audits are
                                          required annually instead of
                                          quarterly.

6. Reduced sulfur and O2 continuous      Performance specification 5 (40
 emission monitoring system for sulfur    CFR part 60, appendix B),
 recovery unit with reduction control     except calibration drift
 system not followed by incineration;     specification is 2.5 percent
 this monitor must include an O2          of the span value instead of 5
 monitor for correcting the data for      percent; span value is 450 ppm
 excess air unless exempted.              reduced sulfur, or if using
                                          Equation 1 of 40 CFR
                                          60.102a(f)(1)(i), span value
                                          of two times the limit at the
                                          highest O2 concentration; use
                                          Methods 15 or 15A (40 CFR part
                                          60, appendix A-5) for
                                          certifying the reduced sulfur
                                          monitor and Methods 3A or 3B
                                          (40 CFR part 60, appendix A-2)
                                          for certifying the O2 monitor;
                                          if Method 3A or 3B yields O2
                                          concentrations below 0.25
                                          percent during the performance
                                          evaluation, the O2
                                          concentration can be assumed
                                          to be zero and the O2 monitor
                                          is not required; and procedure
                                          1 (40 CFR part 60, appendix
                                          F), except relative accuracy
                                          test audits, are required
                                          annually instead of quarterly.
7. Instrument with an air or O2          Performance specification 5 (40
 dilution and oxidation system to         CFR part 60, appendix B); span
 convert reduced sulfur to SO2 for        value of 375 ppm SO2 or if
 continuously monitoring the              using Equation 1 of 40 CFR
 concentration of SO2 instead of          60.102a(f)(1)(i), span value
 reduced sulfur monitor and O2 monitor.   of two times the limit at the
                                          highest O2 concentration; use
                                          Methods 15 or 15A (40 CFR part
                                          60, appendix A-5) for
                                          certifying the reduced sulfur
                                          monitor and 3A or 3B (40 CFR
                                          part 60, appendix A-2) for
                                          certifying the O2 monitor; and
                                          procedure 1 (40 CFR part 60,
                                          appendix F), except relative
                                          accuracy test audits, are
                                          required annually instead of
                                          quarterly.
8. TRS continuous emission monitoring    Performance specification 5 (40
 system for sulfur recovery unit; this    CFR part 60, appendix B).
 monitor must include an O2 monitor for
 correcting the data for excess air.
9. O2 monitor for oxygen concentration.  If necessary due to
                                          interferences, locate the
                                          oxygen sensor prior to the
                                          introduction of any outside
                                          gas stream; performance
                                          specification 3 (40 CFR part
                                          60, appendix B; and procedure
                                          1 (40 CFR part 60, appendix
                                          F), except relative accuracy
                                          test audits, are required
                                          annually instead of quarterly.
------------------------------------------------------------------------

0
85. Table 41 to subpart UUU of part 63 is revised to read as follows:
    As stated in Sec.  63.1572(c)(1), you shall meet each requirement
in the following table that applies to you.

   Table 41 to Subpart UUU of Part 63--Requirements for Installation,
  Operation, and Maintenance of Continuous Parameter Monitoring Systems
------------------------------------------------------------------------
      If you use . . .                     You shall . . .
------------------------------------------------------------------------
1. pH strips...............  Use pH strips with an accuracy of 10 percent.
2. pH meter................  Locate the pH sensor in a position that
                              provides a representative measurement of
                              pH; ensure the sample is properly mixed
                              and representative of the fluid to be
                              measured.
                             Use a pH sensor with an accuracy of at
                              least 0.2 pH units.
                             Check the pH meter's calibration on at
                              least one point at least once daily; check
                              the pH meter's calibration on at least two
                              points at least once quarterly; at least
                              monthly, inspect all components for
                              integrity and all electrical components
                              for continuity; record the results of each
                              calibration check and inspection.
3. Colormetric tube          Use a colormetric tube sampling system with
 sampling system.             a printed numerical scale in ppmv, a
                              standard measurement range of 1 to 10 ppmv
                              (or 1 to 30 ppmv if applicable), and a
                              standard deviation for measured values of
                              no more than 15 percent.
                              System must include a gas detection pump
                              and hot air probe if needed for the
                              measurement range.
4. CO2, O2, and CO monitors  a. Locate the concentration sensor so that
 for coke burn-off rate.      it provides a representative measurement
                              of the content of the exit gas stream;
                              ensure the sample is properly mixed and
                              representative of the gas to be measured.
                             Use a sensor with an accuracy of at least
                              1 percent of the range of the
                              sensor or to a nominal gas concentration
                              of 0.5 percent, whichever is
                              greater.
                             Use a monitor that is able to measure
                              concentration on a dry basis or is able to
                              correct for moisture content and record on
                              a dry basis.
                             Conduct calibration checks at least
                              annually; conduct calibration checks
                              following any period of more than 24 hours
                              throughout which the sensor reading
                              exceeds the manufacturer's specified
                              maximum operating range or install a new
                              sensor; at least quarterly, inspect all
                              components for integrity and all
                              electrical connections for continuity;
                              record the results of each calibration and
                              inspection.
                             b. As an alternative, the requirements in
                              40 CFR 60.105a(b)(2) may be used.
5. BLD.....................  Follow the requirements in 40 CFR
                              60.105a(c).
6. Voltage, secondary        Use meters with an accuracy of at least
 current, or total power      5 percent over the operating
 input sensors.               range.

                             Each time that the unit is not operating,
                              confirm that the meters read zero. Conduct
                              a calibration check at least annually;
                              conduct calibration checks following any
                              period of more than 24 hours throughout
                              which the meter reading exceeds the
                              manufacturer's specified maximum operating
                              range; at least monthly, inspect all
                              components of the continuous parameter
                              monitoring system for integrity and all
                              electrical connections for continuity;
                              record the results of each calibration
                              check and inspection.
7. Pressure/Pressure         Locate the pressure sensor(s) in a position
 drop\1\ sensors.             that provides a representative measurement
                              of the pressure and minimizes or
                              eliminates pulsating pressure, vibration,
                              and internal and external corrosion.
                             Use a gauge with an accuracy of at least
                              5 percent over the normal
                              operating range or 0.12 kilopascals (0.5
                              inches of water column), whichever is
                              greater.
                             Review pressure sensor readings at least
                              once a week for straightline (unchanging)
                              pressure and perform corrective action to
                              ensure proper pressure sensor operation if
                              blockage is indicated; using an instrument
                              recommended by the sensor's manufacturer,
                              check gauge calibration and transducer
                              calibration annually; conduct calibration
                              checks following any period of more than
                              24 hours throughout which the pressure
                              exceeded the manufacturer's specified
                              maximum rated pressure or install a new
                              pressure sensor; at least quarterly,
                              inspect all components for integrity, all
                              electrical connections for continuity, and
                              all mechanical connections for leakage,
                              unless the CPMS has a redundant pressure
                              sensor; record the results of each
                              calibration check and inspection.
8. Air flow rate, gas flow   Locate the flow sensor(s) and other
 rate, or total water (or     necessary equipment (such as straightening
 scrubbing liquid) flow       vanes) in a position that provides
 rate sensors.                representative flow; reduce swirling flow
                              or abnormal velocity distributions due to
                              upstream and downstream disturbances. If
                              you elect to comply with Option 3 (Ni lb/
                              hr) or Option 4 (Ni lb/1,000 lb of coke
                              burn-off) for the HAP metal emission
                              limitations in Sec.   63.1564, install the
                              continuous parameter monitoring system for
                              gas flow rate as close as practical to the
                              continuous opacity monitoring system; and
                              if you don't use a continuous opacity
                              monitoring system, install the continuous
                              parameter monitoring system for gas flow
                              rate as close as practical to the control
                              device.
                             Use a flow rate sensor with an accuracy of
                              at least 5 percent over the
                              normal range of flow measured, or 1.9
                              liter per minute (0.5 gallons per minute),
                              whichever is greater, for liquid flow.
                             Use a flow rate sensor with an accuracy of
                              at least 5 percent over the
                              normal range of flow measured, or 280
                              liters per minute (10 cubic feet per
                              minute), whichever is greater, for gas
                              flow.
                             Conduct a flow sensor calibration check at
                              least biennially (every two years);
                              conduct a calibration check following any
                              period of more than 24 hours throughout
                              which the flow rate exceeded the
                              manufacturer's specified maximum rated
                              flow rate or install a new flow sensor; at
                              least quarterly, inspect all components
                              for leakage, unless the CPMS has a
                              redundant flow sensor; record the results
                              of each calibration check and inspection.
9. Temperature sensors.....  Locate the temperature sensor in the
                              combustion zone, or in the ductwork
                              immediately downstream of the combustion
                              zone before any substantial heat exchange
                              occurs or in the ductwork immediately
                              downstream of the regenerator; locate the
                              temperature sensor in a position that
                              provides a representative temperature;
                              shield the temperature sensor system from
                              electromagnetic interference and chemical
                              contaminants.
                             Use a temperature sensor with an accuracy
                              of at least 1 percent over the
                              normal range of temperature measured,
                              expressed in degrees Celsius (C), or 2.8
                              degrees C, whichever is greater.
                             Conduct calibration checks at least
                              annually; conduct calibration checks
                              following any period of more than 24 hours
                              throughout which the temperature exceeded
                              the manufacturer's specified maximum rated
                              temperature or install a new temperature
                              sensor; at least quarterly, inspect all
                              components for integrity and all
                              electrical connections for continuity,
                              oxidation, and galvanic corrosion, unless
                              the CPMS has a redundant temperature
                              sensor; record the results of each
                              calibration check and inspection.
10. Oxygen content sensors   Locate the oxygen sensor so that it
 \2\.                         provides a representative measurement of
                              the oxygen content of the exit gas stream;
                              ensure the sample is properly mixed and
                              representative of the gas to be measured.
                             Use an oxygen sensor with an accuracy of at
                              least 1 percent of the range
                              of the sensor or to a nominal gas
                              concentration of 0.5 percent,
                              whichever is greater.
                             Conduct calibration checks at least
                              annually; conduct calibration checks
                              following any period of more than 24 hours
                              throughout which the sensor reading
                              exceeds the manufacturer's specified
                              maximum operating range or install a new
                              oxygen sensor; at least quarterly, inspect
                              all components for integrity and all
                              electrical connections for continuity;
                              record the results of each calibration and
                              inspection.
------------------------------------------------------------------------
\1\ Not applicable to non-venturi wet scrubbers of the jet-ejector
  design.
\2\ This does not replace the requirements for oxygen monitors that are
  required to use continuous emissions monitoring systems. The
  requirements in this table apply to oxygen sensors that are continuous
  parameter monitors, such as those that monitor combustion zone oxygen
  concentration and regenerator exit oxygen concentration.

0
86. Table 43 to subpart UUU is revised to read as follows:
    As stated in Sec.  63.1575(a), you shall meet each requirement in
the following table that applies to you.

      Table 43 to Subpart UUU of Part 63--Requirements for Reports
------------------------------------------------------------------------
                                                        You shall submit
     You must submit . . .          The report must     the report . . .
                                     contain . . .
------------------------------------------------------------------------
1. A compliance report........  If there are no         Semiannually
                                 deviations from any     according to
                                 emission limitation     the
                                 or work practice        requirements in
                                 standard that applies   Sec.
                                 to you, a statement     63.1575(b).
                                 that there were no
                                 deviations from the
                                 standards during the
                                 reporting period and
                                 that no continuous
                                 opacity monitoring
                                 system or continuous
                                 emission monitoring
                                 system was
                                 inoperative,
                                 inactive, out-of-
                                 control, repaired, or
                                 adjusted; if you have
                                 a deviation from any
                                 emission limitation
                                 or work practice
                                 standard during the
                                 reporting period, the
                                 report must contain
                                 the information in
                                 Sec.   63.1575(c)
                                 through (e).
2. Performance test and CEMS    On and after January    Within 60 days
 performance evaluation data.    30, 2019, the           after the date
                                 information specified   of completing
                                 in Sec.                 each test
                                 63.1575(k)(1).          according to
                                                         the
                                                         requirements in
                                                         Sec.
                                                         63.1575(k).
------------------------------------------------------------------------

0
87. Table 44 to subpart UUU of part 63 is revised to read as follows:
    As stated in Sec.  63.1577, you shall meet each requirement in the
following table that applies to you.

          Table 44 to Subpart UUU of Part 63--Applicability of NESHAP General Provisions to Subpart UUU
----------------------------------------------------------------------------------------------------------------
                                                                  Applies to subpart
             Citation                         Subject                    UUU                  Explanation
----------------------------------------------------------------------------------------------------------------
Sec.   63.1(a)(1)-(4).............  General Applicability.....  Yes..................  .........................
Sec.   63.1(a)(5).................  [Reserved]................  Not applicable.......  .........................
Sec.   63.1(a)(6).................  ..........................  Yes..................  Except the correct mail
                                                                                drop (MD) number is C404-
                                                                                04.
Sec.   63.1(a)(7)-(9).............  [Reserved]................  Not applicable.......  .........................
Sec.   63.1(a)(10)-(12)...........  ..........................  Yes..................  Except that this subpart
                                                                                specifies calendar or
                                                                                operating day.
Sec.   63.1(b)(1).................  Initial Applicability       Yes..................  .........................
                                     Determination for this
                                     part.
Sec.   63.1(b)(2).................  [Reserved]................  Not applicable.......  .........................
Sec.   63.1(b)(3).................  ..........................  Yes..................  .........................
Sec.   63.1(c)(1).................  Applicability of this part  Yes..................  .........................
                                     after a Relevant Standard
                                     has been set under this
                                     part.
Sec.   63.1(c)(2).................  ..........................  No...................  Area sources are not
                                                                                subject to this subpart.
Sec.   63.1(c)(3)-(4).............  [Reserved]................  Not applicable.......  .........................
Sec.   63.1(c)(5).................  ..........................  Yes..................  .........................
Sec.   63.1(d)....................  [Reserved]................  Not applicable.......  .........................
Sec.   63.1(e)....................  Applicability of Permit     Yes..................  .........................
                                     Program.
Sec.   63.2.......................  Definitions...............  Yes..................  Sec.   63.1579 specifies
                                                                                that if the same term is
                                                                                defined in subparts A
                                                                                and UUU of this part, it
                                                                                shall have the meaning
                                                                                given in this subpart.
Sec.   63.3.......................  Units and Abbreviations...  Yes..................  .........................
Sec.   63.4(a)(1)-(2).............  Prohibited Activities.....  Yes..................  .........................
Sec.   63.4(a)(3)-(5).............  [Reserved]................  Not applicable.......  .........................
Sec.   63.4(b)-(c)................  Circumvention and           Yes..................  .........................
                                     Fragmentation.
Sec.   63.5(a)....................  Construction and            Yes..................  .........................
                                     Reconstruction.
Sec.   63.5(b)(1).................  ..........................  Yes..................  .........................
Sec.   63.5(b)(2).................  [Reserved]................  Not applicable.......  .........................
Sec.   63.5(b)(3)-(4).............  ..........................  Yes..................  In Sec.   63.5(b)(4),
                                                                                replace the reference to
                                                                                Sec.   63.9(b) with Sec.
                                                                                63.9(b)(4) and (5).
Sec.   63.5(b)(5).................  [Reserved]................  Not applicable.......  .........................
Sec.   63.5(b)(6).................  ..........................  Yes..................  .........................
Sec.   63.5(c)....................  [Reserved]................  Not applicable.......  .........................
Sec.   63.5(d)(1)(i)..............  Application for Approval    Yes..................  Except this subpart
                                     of Construction or                                 specifies the
                                     Reconstruction--General                            application is submitted
                                     Application Requirements.                          as soon as practicable
                                                                                before startup but not
                                                                                later than 90 days after
                                                                                the promulgation date if
                                                                                construction or
                                                                                reconstruction had
                                                                                commenced and initial
                                                                                startup had not occurred
                                                                                before promulgation.

Sec.   63.5(d)(1)(ii).............  ..........................  Yes..................  Except that emission
                                                                                estimates specified in
                                                                                Sec.   63.5(d)(1)(ii)(H)
                                                                                are not required, and
                                                                                Sec.   63.5(d)(1)(ii)(G)
                                                                                and (I) are Reserved and
                                                                                do not apply.
Sec.   63.5(d)(1)(iii)............  ..........................  No...................  This subpart specifies
                                                                                submission of
                                                                                notification of
                                                                                compliance status.
Sec.   63.5(d)(2).................  ..........................  Yes..................  .........................
Sec.   63.5(d)(3).................  ..........................  Yes..................  .........................
Sec.   63.5(d)(4).................  ..........................  Yes..................  .........................
Sec.   63.5(e)....................  Approval of Construction    Yes..................  .........................
                                     or Reconstruction.
Sec.   63.5(f)(1).................  Approval of Construction    Yes..................  .........................
                                     or Reconstruction Based
                                     on State Review.
Sec.   63.5(f)(2).................  ..........................  Yes..................  Except that the cross-
                                                                                reference to Sec.
                                                                                63.9(b)(2) does not
                                                                                apply.
Sec.   63.6(a)....................  Compliance with Standards   Yes..................  .........................
                                     and Maintenance--
                                     Applicability.
Sec.   63.6(b)(1)-(4).............  Compliance Dates for New    Yes..................  .........................
                                     and Reconstructed Sources.
Sec.   63.6(b)(5).................  ..........................  Yes..................  Except that this subpart
                                                                                specifies different
                                                                                compliance dates for
                                                                                sources.
Sec.   63.6(b)(6).................  [Reserved]................  Not applicable.......  .........................
Sec.   63.6(b)(7).................  Compliance Dates for New    Yes..................  .........................
                                     and Reconstructed Area
                                     Sources That Become Major.
Sec.   63.6(c)(1)-(2).............  Compliance Dates for        Yes..................  Except that this subpart
                                     Existing Sources.                                  specifies different
                                                                                compliance dates for
                                                                                sources subject to Tier
                                                                                II gasoline sulfur
                                                                                control requirements.
Sec.   63.6(c)(3)-(4).............  [Reserved]................  Not applicable.......  .........................
Sec.   63.6(c)(5).................  Compliance Dates for        Yes..................  .........................
                                     Existing Area Sources
                                     That Become Major.
Sec.   63.6(d)....................  [Reserved]................  Not applicable.......  .........................
Sec.   63.6(e)(1)(i)..............  General Duty to Minimize    No...................  See Sec.   63.1570(c) for
                                     Emissions.                                         general duty
                                                                                requirement.
Sec.   63.6(e)(1)(ii).............  Requirement to Correct      No...................  .........................
                                     Malfunctions as Soon as
                                     Possible.
Sec.   63.6(e)(1)(iii)............  Compliance with Standards   Yes..................  .........................
                                     and Maintenance
                                     Requirements.
Sec.   63.6(e)(2).................  [Reserved]................  Not Applicable.......  .........................
Sec.   63.6(e)(3)(i)..............  Startup, Shutdown, and      No...................  .........................
                                     Malfunction Plan
                                     Requirements.
Sec.   63.6(e)(3)(ii).............  [Reserved]................  Not applicable.......  .........................
Sec.   63.6(e)(3)(iii)-(ix).......  ..........................  No...................  .........................
Sec.   63.6(f)(1).................  SSM Exemption.............  No...................  .........................
Sec.   63.6(f)(2)(i)-(iii)(C).....  Compliance with Standards   Yes..................  .........................
                                     and Maintenance
                                     Requirements.
Sec.   63.6(f)(2)(iii)(D).........  ..........................  Yes..................  .........................
Sec.   63.6(f)(2)(iv)-(v).........  ..........................  Yes..................  .........................
Sec.   63.6(f)(3).................  ..........................  Yes..................  Except the cross-
                                                                                references to Sec.
                                                                                63.6(f)(1) and (e)(1)(i)
                                                                                are changed to Sec.
                                                                                63.1570(c).
Sec.   63.6(g)....................  Alternative Standard......  Yes..................  .........................
Sec.   63.6(h)(1).................  SSM Exemption for Opacity/  No...................  .........................
                                     VE Standards.
Sec.   63.6(h)(2)(i)..............  Determining Compliance      No...................  This subpart specifies
                                     with Opacity/VE Standards.                         methods.
Sec.   63.6(h)(2)(ii).............  [Reserved]................  Not applicable.......  .........................
Sec.   63.6(h)(2)(iii)............  ..........................  Yes..................  .........................
Sec.   63.6(h)(3).................  [Reserved]................  Not applicable.......  .........................
Sec.   63.6(h)(4).................  Notification of Opacity/VE  Yes..................  Applies to Method 22 (40
                                     Observation Date.                                  CFR part 60, appendix A-
                                                                                7) tests.
Sec.   63.6(h)(5).................  Conducting Opacity/VE       No...................  .........................
                                     Observations.
Sec.   63.6(h)(6).................  Records of Conditions       Yes..................  Applies to Method 22 (40
                                     During Opacity/VE                                  CFR part 60, appendix A-
                                     Observations.                                      7) observations.
Sec.   63.6(h)(7)(i)..............  Report COM Monitoring Data  Yes..................  .........................
                                     from Performance Test.
Sec.   63.6(h)(7)(ii).............  Using COM Instead of        No...................  .........................
                                     Method 9.

Sec.   63.6(h)(7)(iii)............  Averaging Time for COM      Yes..................  .........................
                                     during Performance Test.
Sec.   63.6(h)(7)(iv).............  COM Requirements..........  Yes..................  .........................
Sec.   63.6(h)(7)(v)..............  COMS Results and Visual     Yes..................  .........................
                                     Observations.
Sec.   63.6(h)(8).................  Determining Compliance      Yes..................  .........................
                                     with Opacity/VE Standards.
Sec.   63.6(h)(9).................  Adjusted Opacity Standard.  Yes..................  .........................
Sec.   63.6(i)(1)-(14)............  Extension of Compliance...  Yes..................  Extension of compliance
                                                                                under Sec.   63.6(i)(4)
                                                                                not applicable to a