SDAPCD RULE XI-A NESHAPS - GENERAL PROVISIONS          
LAST REVISED 01/13/87

          
          REGULATION XI.      NATIONAL EMISSION STANDARDS FOR
                              HAZARDOUS AIR POLLUTANTS (NESHAPS)


          SUBPART A - General Provisions   (Delegation Effect.: 11-8-76:
                      Rev. Effect.: 1-13-87)


               RULE 361.01.   APPLICABILITY

               The provisions of this regulation apply to the owner or
          operator of any stationary source for which a standard is
          prescribed under this regulation, and for which Federal
          delegation of the implementation and enforcement of the standards
          to the Air Pollution Control District of San Diego County has
          been accomplished.  Any such stationary source must also comply
          with other regulations of the Air Pollution Control District of
          San Diego County, as well as concurrent enforcement authority of
          these standards pursuant to Section 113 of the Act, as amended,
          if the EPA Administrator desires to exercise it.


               RULE 361.02.   DEFINITIONS

               Terms used in this regulation shall have the following
          meanings or, for terms not herein defined, the meaning given them
          in Regulation I of the Air Pollution Control District of San
          Diego County or in the Act:

               (a)  "Act" means the Clean Air Act (42 U.S.C. 7401 et seq.).

               (b)  "Administrator" means the Administrator of the
          Environmental Protection Agency or his authorized representative.

               (c)  "Alternative Method" means any method of sampling and
          analyzing for an air pollutant which is not a reference method
          but which has been demonstrated to the Administrator's
          satisfaction to produce results adequate for the Administrator's
          determination of compliance.

               (d)  "Capital Expenditure" means an expenditure for a
          physical or operational change to a stationary source which
          exceeds the product of the applicable "annual asset guideline
          repair allowance percentage" specified in the latest edition of
          Internal Revenue Service (IRS) Publication 534 and the stationary
          source's basis, as defined by Section 1012 of the Internal
          Revenue Code.  However, the total expenditure for a physical or
          operational change to a  stationary source must be reduced by an
          "excluded additions" as defined for stationary sources
          constructed after December 31, 1981, in IRS Publication 534, as
          would be done for tax purposes.  In addition, "annual asset
          guideline repair allowance" may be used even though it is
          excluded for tax purposes in IRS Publication 534.

               (e)  "Commenced" means that an owner or operator has
          undertaken a continuous program of construction or modification
          or that an owner or operator has entered into a contractural
          obligation to undertake and complete, within a reasonable time, a
          continuous program of construction or modification.

               (f)  "Compliance Schedule" means the date or dates by which
          a source or category of sources is required to comply with the
          standards of this regulation and with any steps toward such
          compliance which are set forth in a waiver of compliance granted
          by the Administrator.

               (g)  "Construction" means fabrication, erection, or
          installation of a stationary source.

               (h)  "Effective Date" is the date of Federal delegation of
          the implementation and enforcement of any standard promulgated in
          this regulation to the State of California, on behalf of the Air
          Pollution Control District of San Diego County.

               (i)  "Existing Source" means any stationary source which is
          not a new source.

               (j)  "Monitoring System" means any system, required under
          the monitoring Sections in applicable subparts, used to sample
          and condition (if applicable), to analyze, and to provide a
          record of emissions or process parameters.

               (k)  "New Source" means any stationary source, the
          construction or modification of which is commenced after the
          publication in the FEDERAL REGISTER of proposed national emission
          standards for hazardous air pollutants which will be applicable
          to such source.

               (l)  "Owner or Operator" means any person who owns , leases,
          operates, controls, or supervises a stationary source.

               (m)  "Reference Method" means any method of sampling and
          analyzing for an air pollutant, as described in Appendix B to 40
          CFR Part 61.

               (n)  "Run" means the net period of time during which an
          emission sample is collected.  Unless otherwise specified, a run
          may be either intermittent or continuous within the  limits of
          good engineering practice.

               (o)  "Startup" means the setting in operation of a
          stationary source for any purpose.

               (p)  "Standard" means a national emission standard including
          a design, equipment, work practice or operational standard for a
          hazardous air pollutant proposed or promulgated under this
          regulation.

               (q)  "Stationary Source" means any building, structure,
          facility, or installation which emits or may emit any air
          pollutant which has been designated as hazardous by the
          Administrator.
               RULE 361.03.   UNITS AND ABBREVIATIONS

               Used in this subpart are abbreviations and symbols of units
          of measure.  These are defined as follows:

               (a)  System International (SI) units of measure:

          A    =    ampere                   mol  =    mole
          g    =    gram                     N    =    newton
          Hz   =    hertz                    ng   =    nanogram = 10-9 gram
          J    =    joule                    nm   =    nanometer = 10-9meter
          K    =    degree Kelvin            Pa   =    pascal
          kg   =    kilogram                 s    =    second
          m    =    meter                    V    =    volt
          m3   =    cubic meter              W    =    watt
          mg   =    milligram = 10-3 gram         =    ohm
          mm   =    millimeter = 10-3 meter  g    =    microgram = 10-6 gram
          Mg   =    megagram = 106 gram

          (b)  Other units of measure:

          C   =    degree Celsius (centigrade)    l= liter
          cfm  =    cubic feet per minute      lb   =    pound
          cc   =    cubic centimeter           lpm  =    liter per minute
          d    =    day                        min  =    minute
          F   =    degree Fahrenheit          ml   =    milliliter = 10-3 
                                                         liter
          ft2  =    square feet                oz   =    ounces
          ft3  =    cubic feet                 psig =    pounds per square
                                                         inch gas
          gal  =    gallon                     R   =    degree Rankine
          in   =    inch                       l    =    microliter = 10-6
                                                         liter
          in Hg=    inches of mercury          v/v  =    volume per volume
                                               yd2  =    square yard
       in H2O  = inches of water               yr   =    year


          (c)  Chemical nomenclature:

          Be   =    beryllium                  H2O  =    water
          Hg   =    mercury

          (d)  Miscellaneous:

          act  =    actual                     N    =    normal
          avg  =    average                    O.D. =    outside diameter
          I.D. =    inside diameter            %    =    percent
          M    =    Molar                      std  =    standard


               RULE 361.04    DELEGATION

               (a)  Section 112(d) of the Clean Air Act as amended, directs
          the Administrator of the Environmental Protection Agency to
          delegate, when appropriate, to each State (on behalf of the Air
          Pollution Control Districts, in the case of California) the
          authority to implement and enforce the national emission
          standards for hazardous air pollutants for stationary sources
          located in such State.

               (b)  This Regulation XI implements such delegation to the
          Air Pollution Control District of San Diego County, for those
          hazardous air pollutants which are anticipated for this County.

               (c)  The Federal Regulations for implementation and
          enforcement of these standards are contained in Part 61, Chapter
          I, Title 40, Code of Federal Regulations (40 CFR Part 61).  The
          applicable portions of this 40 CFR Part 61 have been adopted in
          this Regulation XI  and the 40 CFR Part 61 Section numbers have
          been adapted to Regulation XI rule numbers by the addition of the
          number 300 to each CFR Part 61 Section number.

               (d)  Appendix A (excluding AIIA, "WAIVER OF COMPLIANCE") and
          Appendix B to 40 CFR Part 61 are incorporated herein by
          reference.  The following substitutions shall be made for the
          indicated words or numbers wherever appearing in these 40 CFR
          Part 61 appendices when they are being used as parts of this
          Regulations XI:

                    (1)  "Control Officer" for:

                         "Administrator of the (U.S.) Environmental
                         Protection Agency",
                         "Administrator", and
                         "Appropriate U.S. Environmental Protection Agency
                         Regional
                         Office", except where the Administrator retains
                         sole authority for approving alternative or 
                         equivalent test methods and alternative
                         standards/work practices.

                    (2)  "Regulation" for "Part"

                    (3)  "Rule" for:

                         "Section"
                         ""

                    (4)  Rule numbers for section numbers by adding 300 to
               the section numbers.

               (e)  In addition to the general substitutions of Rule
          361.04(d) the following specific revisions shall be made to
          Appendix A to 40 CFR Part 61:

               Appendix AIA - NOTE to read:

               NOTE:     If the emissions from the source will exceed those
               limits set by the National Emission Standards for Hazardous
               Air Pollutants, the source will be in violation and subject
               to San Diego County Air Pollution Control District and
               Federal enforcement actions unless granted a waiver of
               compliance by the Administrator of the U.S. Environmental
               Protection Agency."

               (f)  40 CFR Part 61 changes published in the Federal
          Register through November 7, 1985 are incorporated as required in
          the publication, or change, of Regulation XI.


               RULE 361.05.   PROHIBITED ACTIVITIES

               (a)  After the effective date of any standard no owner or
          operator shall construct or modify any stationary source subject
          to that standard without first obtaining written approval of from
          the Control Officer in accordance with this subpart, except under
          an exemption granted by the President under Section 112(c)(2) of
          the Act.  This prohibition applies to sources where construction
          or modification commenced after the publication date of proposed
          standards applicable to those sources.

               (b)  After the effective date of any standard no owner or
          operator shall operate any new stationary source subject to that
          standard in violation of the standard, except under an exemption
          granted by the President under Section 112(c)(2) of the Act.

               (c)  Ninety days after the effective date of any standard,
          no owner or operator shall operate any existing source subject to
          that standard in violation of the standard, except under a waiver
          granted by the Administrator under this part or under an
          exemption granted by the President under Section 112(c)(2) of the
          Act.


               RULE 361.06.   DETERMINATION OF CONSTRUCTION OR
                              MODIFICATION

               An owner or operator may submit to the Control Officer a
          written request for a determination of whether actions intended
          to be taken by the owner or operator constitute construction or
          modification or commencement thereof, of a source subject to a
          standard.  The Control Officer will notify the owner or operator
          of his determination within 30 days after receiving sufficient
          information to evaluate the application.


               RULE 361.07.   APPLICATION FOR APPROVAL OF CONSTRUC
                              TION OR MODIFICATION

               (a)  The owner or operator shall submit to the Control
          Officer an application for approval of the construction of any
          new source or modification of any existing source.  The
          application shall be submitted before the construction or
          modification is planned to commence, or within 30 days after the
          effective date if the construction or modification had commenced
          before the effective date and initial startup has not occurred. A
          separate application shall be submitted for each stationary
          source.

               (b)  Each application for approval of construction shall
          include:

                    (1)  The name and address of the applicant;

                    (2)  The location or proposed location of the source;
               and

                    (3)  Technical information describing the proposed
               nature, size, design, operating design capacity, and method
               of operation of the source, including a description of any
               equipment to be used for control of emissions.  Such
               technical information shall include calculations of emission
               estimates in sufficient detail to permit assessment of the
               validity of such calculations.

               (c)  Each application for approval of modification shall
          include, in addition to the information required in Section (b)
          of this rule:

                    (1)  The precise nature of the proposed changes;

                    (2)  The productive capacity of the source before and
               after the changes are completed; and

                    (3)  Calculations of estimates of emissions before and
               after the changes are completed, in sufficient detail to
               permit assessment of the validity of the calculations.


               RULE 361.08.   APPROVAL OF CONSTRUCTION OR MODIFICATION

               (a)  The Control Officer will, notify the owner or operator
          of approval or intention to deny approval of construction or
          modification within 60 days after receipt of sufficient informa-
          tion to evaluate an application under Rule 361.07.

               (b)  If the Control Officer determines that a stationary
          source for which an application under Rule 361.07 was submitted
          will, not cause emissions in violation of standard if properly
          operated, the Control Officer will approve the construction or
          modification.

               (c)  Before denying any application for approval or
          construction or modification the Control Officer will notify the
          applicant of the Control Officer's intention to issue the denial,
          together with:

                    (1)  Notice of the information and findings on which
               such intended denial is based, and

                    (2)  Notice of opportunity for the applicant to
               present, within such time limit as the Control Officer shall
               specify, additional information or arguments to the Control
               Officer before final action on the application.

               (d)  A final determination to deny any application for
          approval will be in writing and will specify the grounds on which
          such denial is based.  The final determination will be made
          within 60 days of presentation of additional information or
          arguments, or 60 days after the final date specified for
          presentation, if no presentation is made.

               (e)  Neither the submission of an application for approval
          nor the Control Officer's approval of construction or
          modification shall:

                    (1)  Relieve an owner or operator of legal
               responsibility for compliance with any applicable provisions
               of this regulation or of any other applicable Federal,
               State, or local requirement, or

                    (2)  Prevent the Control Officer from implementing or
               enforcing this regulation or taking any other action under
               the Act.


               RULE 361.09.   NOTIFICATION OF STARTUP

               (a)  The owner or operator of each stationary source which
          has an initial startup after the effective date of a standard
          shall furnish the Control Officer with written notification as
          follows:

                    (1)  A notification of the anticipated date of initial
               startup of the source not more than 60 days nor less than 30
               days before that date.

                    (2)  A notification of the actual date of initial
               startup of the source within 15 days after that date.


               RULE 361.10.   SOURCE REPORTING AND REQUEST FOR WAIVER
                              OF COMPLIANCE

               (a)  The owner or operator of each existing source or each
          new source which had an initial startup before the effective date
          shall provide the following information in writing to the Control
          Officer within 90 days after the effective date:

                    (1)  Name and address of the owner or operator.

                    (2)  The location of the source.

                    (3)  The type of hazardous pollutants emitted by the
               stationary source.

                    (4)  A brief description of the nature , size, design,
               and method of operation of the stationary source including
               the operating design capacity of the source.  Identify each
               point of emission for each hazardous  pollutant.

                    (5)  The average weight per month of the hazardous
               materials being processed by the source, over the last 12
               months preceding the date of the report.

                    (6)  A description of the existing control equipment
               for each emission point including:

                         (i)  Each control device for each hazardous
                    pollutant; and

                         (ii) Estimated control efficiency (percent) for
                    each control device.

                    (7)  A statement by the owner or operator of the source
               as to whether he can comply with the standards within 90
               days after the effective date.

               (b)  The owner or operator of an existing source unable to
          comply with an applicable standard may request a waiver of
          compliance with that standard from the Administrator of the U.S.
          Environmental Protection Agency for a period not exceeding 2
          years after the effective date.  Any request of a copy of which
          shall be provided to the Control Officer, shall be in writing and
          shall include the following information:

                    (1)  A description of the controls to be installed to
               comply with the standard.

                    (2)  A compliance schedule, including the date each
               step toward compliance will be reached.  The list shall
               include as a minimum the following dates:

                         (i)  Date by which contracts for emission control
                    systems or process changes for emission control will be
                    awarded, or date by which orders will be issued for the
                    purchase of component parts to accomplish emission
                    control or process changes;

                         (ii) Date of initiation of on-site construction or
                    installation of emission control equipment or process
                    changes;

                         (iii)Date by which on-site construction or
                    installation of emission control equipment or process
                    change is to be completed; and

                         (iv) Date by which final compliance is to be
                    achieved.

                    (3)  A description of interim emission control steps
               which will be taken during the waiver period.

               (c)  Any change in the information provided under Section
          (a) of this rule or Rule 361.07(b) shall be provided to the
          Control Officer and the Administrator within 30 days after such
          change.  However, any change will result from modification of the
          source, Rules 361.07(c) and 361.08 apply.

               (d)  A possible format for reporting under this rule is
          included as Appendix A to 40 CFR Part 61.  Advice on reporting
          the status of compliance may be obtained from the Control
          Officer.


               RULE 361.11.   WAIVER OF COMPLIANCE

               (a)  Based on the information provided in any request under
          Rule 361.10, or other information, the Administrator may grant a
          waiver of compliance with a standard for a period not exceeding
          two years after the effective date of the standard.

               (b)  The waiver will be in writing and will:

                    (1)  Identify the stationary source covered;

                    (2)  Specify the termination date of the waiver;

                    (3)  Specify dates by which steps toward compliance are
               to be taken; and

                    (4)  Specify any additional conditions which the
               Administrator determines necessary to assure installation of
               the necessary controls within the waiver period and to
               assure protection of the health of persons during the waiver
               period.

               (c)  The Administrator may terminate the waiver at an
          earlier date than specified if any specification under Subsection
          (b)(3) and (b)(4) of the rule are not met.

               (d)  Before denying any request for a waiver, the
          Administrator will notify the owner or operator making the
          request of the Administrator's intention to issue the denial,
          together with:

                    (1)  Notice of the information and findings on which
               the intended denial is based; and

                    (2)  Notice of opportunity for the owner or operator to
               present, within the time limit the Administrator specifies,
               additional information or arguments to the Administrator
               before final action on the request.

               (e)  A final determination to deny any request for a waiver
          will be in writing and will set forth the specific grounds on
          which the denial is based.  The final determination  will be made
          within 60 days after presentation of additional information or
          argument; or within 60 days after the final date specified for
          the presentation if no presentation is made.

               (f)  The granting of a waiver under this rule shall not
          abrogate the Administrator's authority under Section 114 of the
          Act.


               RULE 361.12.   COMPLIANCE WITH STANDARDS AND MAINTE
                              NANCE REQUIREMENTS

               (a)  Compliance with numerical emission limits shall be
          determined by emission tests established in Rule 361.13 unless
          otherwise specified in an individual subpart.

               (b)  Compliance with design, equipment, work practice or
          operational standards shall be determined as specified in an
          individual subpart.

               (c)  The owner or operator of each stationary source shall
          maintain and operate the source, including associated equipment
          for air pollution control, in a manner consistent with good air
          pollution control practice for minimizing emissions.
          Determination of whether acceptable operating and maintenance
          procedures are being used will be based on information available
          to the Control Officer which may include, but is not limited to,
          monitoring results, review of operating and maintenance
          procedures, and inspection of the source.

               (d)  (1)  If, in the Administrator's judgement, an
          alternative means of emission limitation will achieve a reduction
          in emissions of a pollutant from a source at least equivalent to
          the reduction in emissions of that pollutant from the source
          achieved under any design, equipment, work practice or
          operational standard, the Administrator will publish in the
          Federal Register a notice permitting the use of the alternative
          means for purposes of compliance with the standard.  The notice
          will restrict the permission to the source(s) or category(ies) of
          sources on which the alternative means will achieve equivalent
          emission reductions.  The notice may condition permission on
          requirements related to the operation and maintenance of the
          alternative means.

                    (2)  Any notice under Subsection (d)(1) shall be
               published only after notice and an opportunity for a
               hearing.

                    (3)  Any person seeking permission under this Section
               shall, unless otherwise specified in the applicable subpart,
               submit a proposed test plan or the results of testing and
               monitoring, a description of the procedures followed in
               testing or monitoring, and a description of pertinent
               conditions during testing or monitoring.


               RULE 361.13.   EMISSION TESTS AND WAIVER OF EMISSION TESTS

               (a)  If required to do emission testing by an applicable
          subpart and unless a waiver of emission testing is obtained under
          this rule, the owner or operator shall test emissions from the
          source:

                    (1)  Within 90 days after the effective date, for an
               existing source or a new source which has an initial startup
               date before the effective date; or

                    (2)  Within 90 days after initial startup, for a new
               source which has an initial startup date after the effective
               date.

               (b)  The Control Officer may require an owner or operator to
          test emissions from the source at any other time.

               (c)  The owner or operator shall notify the Control Officer
          of the emission test at least 30 days before the emission test to
          allow the Control Officer the opportunity to have an observer
          present during the test.

               (d)  If required to do emission testing, the owner or
          operator of each new source and, at the request of the Control
          Officer, the owner or operator of each existing source shall
          provide emission testing facilities as follows:

                    (1)  Sampling ports adequate for test methods
               applicable to each source.

                    (2)  Safe sampling platform(s).

                    (3)  Safe access to sampling platform(s).

                    (4)  Utilities for sampling and testing equipment.

                    (5)  Any other facilities that the Control Officer
               needs to safely and properly test a source.

               (e)  Each emission test shall be conducted under such
          conditions as the Control Officer shall specify based on design
          and operational characteristics of the source.

               (f)  Unless otherwise specified in an applicable subpart,
          samples shall be analyzed and emissions determined within 30 days
          after each emission test has been completed.  The owner or
          operator shall report the determinations of the emission  test to
          the Control Officer by a registered letter sent before the close
          of business on the 31st day following the completion of the
          emission test.

               (g)  The owner or operator shall retain at the source and
          make available, upon request, for inspection by the Control
          Officer, for a minimum of two years, records of emission test
          results and other data needed to determine emissions.

               (h)  (1)  Emission tests shall be conducted as set forth in
          this rule, the applicablesubpart, and Appendix B to 40 CFR;
          unless the Control Officer:

                         (i)  Specifies or approves the use of a reference
                    method with minor changes in methodology; or

                         (ii) The Administrator approves the use of an
                    alternative method, or

                         (iii)The Control Officer waives the requirement
                    for emission testing because the owner or operator of a
                    source has demonstrated by other means to the Control
                    Officer's satisfaction that the source is in compliance
                    with the standard.

                    (2)  If the Control Officer finds reasonable grounds to
               dispute the results obtained by an alternative method, he
               may require the use of a reference method.  If the results
               of the reference and alternative methods do not agree, the
               results obtained by the reference method prevail.

                    (3)  The owner or operator may request approval for the
               use of an alternative method at any time, except:

                         (i)  For an existing source or a new source that
                    had an initial startup before the effective date, any
                    request for use of an alternative method during the
                    initial emission test shall be submitted to the Control
                    Officer within 30 days after the effective date, or
                    with the request for a waiver of compliance if one is
                    submitted under Rule 361.10(b); or

                         (ii) For a new source that has an initial startup
                    after the effective date, any request for use of an
                    alternative method during the initial emission test
                    shall be submitted to the Control Officer no later than
                    with the notification of anticipated startup required
                    under Rule 361.09.

               (i)  (1)  Emission tests may be waived upon written
               application to the Control Officer if, in the Control
               Officer's judgement, the source is meeting the standard, or
               the source is being operated under a waiver of  compliance
               or the owner or operator has requested a waiver of
               compliance and the Administrator is still considering that
               request.

                    (2)  If application for waiver of the emission test is
               made, the application shall accompany the information
               required by Rule 361.10 or the notification of startup
               required by Rule 361.09, whichever is applicable.  A
               possible format is contained in Appendix A to 40 CFR Part
               61.

                    (3)  Approval of any waiver granted under this rule
               shall not abrogate the Administrator's authority under the
               Act or in any way prohibit the Administrator from later can-
               celling the waiver.  The cancellation will be made only
               after notice is given to the owner or operator of the
               source.


               RULE 361.14.   MONITORING REQUIREMENTS

               (a)  Unless otherwise specified, this rule applies to each
          monitoring system required under each subpart which requires
          monitoring.

               (b)  Each owner or operator shall maintain and operate each
          monitoring system as specified in the applicable subpart and in a
          manner consistent with good air pollution control practice for
          minimizing emissions.  Any unavoidable breakdown or malfunction
          of the monitoring system shall be repaired or adjusted as soon as
          practicable after its occurrence.  The Control Officer's
          determination of whether acceptable operating and maintenance
          procedures are being used will be based on information which may
          include, but not be limited to, review of operating and mainte-
          nance procedures, manufacturer recommendations and
          specifications, and inspection of the monitoring system.

               (c)  When required by the applicable subpart, and at any
          other time the Control Officer may require, the owner or operator
          of a source being monitored shall conduct a performance
          evaluation of the monitoring system and furnish the Control
          Officer with a copy of a written report of the results within 60
          days of the evaluation.  Such a performance evaluation shall be
          conducted according to the applicable specifications and
          procedures described in the applicable subpart.  The owner or
          operator of the source shall furnish the Control Officer with
          written notification of the date of the performance evaluation at
          least 30 days before the evaluation is to begin.

               (d)  When the effluents from a single source, or from two or
          more sources subject to the same emission standards, are combined
          before being released to the atmosphere, the owner  or operator
          shall install a monitoring system on each effluent or on the
          combined effluent.  If two or more sources are not subject to the
          same emission standards, the owner or operator shall install a
          separate monitoring system on each effluent, unless otherwise
          specified.  If the applicable standard is a mass emission
          standard and the effluent from one source is released to the
          atmosphere through more than one point, the owner or operator
          shall install a monitoring system at each emission point unless
          the installation of fewer system is approved by the Control
          Officer.

               (e)  The owner or operator of each monitoring system shall
          reduce the monitoring data as specified in each applicable
          subpart.  Monitoring data recorded during periods of unavoidable
          monitoring system breakdowns, repairs, calibration checks, and
          zero and span adjustments shall not be included in any data
          average.

               (f)  The owner or operator shall maintain records of
          monitoring data, monitoring system calibration checks, and the
          occurrence and duration of any period during which the monitoring
          system is malfunctioning or inoperative.  These records shall be
          maintained at the source for a minimum of two years and made
          available, upon request for inspection by the Control Officer.

               (g)  (1)  Monitoring shall be conducted as set forth in this
          rule and the applicable subpart unless the Control Officer:

                         (i)  Specifies or approves the use of the
                    specified monitoring requirements and procedures with
                    minor changes in methodology, or

                         (ii) Approves the use of alternatives to any
                    monitoring requirements or procedures.

                    (2)  If the Control Officer finds reasonable grounds to
               dispute the results obtained by an alternative monitoring
               method, the Control Officer may require the monitoring
               requirements and procedures specified in this regulation.


               RULE 361.15.   MODIFICATION

               (a)  Except as provided under Section (d) of this rule, any
          physical or operational change to a stationary source which
          results in an increase in the rate of emission to the atmosphere
          of a hazardous pollutant to which a standard applies shall be
          considered a modification.

               (b)  Upon modification, an existing source shall become a
          new source for each hazardous pollutant for which the rate of
          emission to the atmosphere increases and to which a standard
          applies.

               (c)  Emission rate shall be expressed as kg/hr for any
          hazardous pollutant discharged into the atmosphere for which a
          standard is applicable.  The Control Officer shall use the
          following to determine the emission rate:

               (1)  Emission factors as specified in the background
          information document (BID) for the applicable standard, or in the
          latest issue of "Compilation of Air Pollutant Emission Factors",
          EPA Publication No. AP-42, or other emission factors determined
          by the Control Officer to be superior to AP-42 emission factors,
          in cases where use of emission factors demonstrates that the
          emission rate will clearly increase or clearly not increase as a
          result of the physical or operational change.

               (2)  Material balances, monitoring data, or manual emission
          tests in cases where use of emission factors, as referenced in
          Subsection (c)(1) of this rule, does not demonstrate to the
          Control Officer's satisfaction that the emission rate will
          clearly increase or clearly not increase as a result of the
          physical or operational change, or where an interested person
          demonstrates to the Control Officer's satisfaction that there are
          reasonable grounds to dispute the result obtained by the Control
          Officer using emission factors.  When the emission rate is based
          on results for manual emission tests or monitoring data, the
          procedures specified in Appendix C of 40 CFR Part 60 shall be
          used to determine whether an increase in emission rate has
          occurred.  Tests shall be conducted under such conditions as the
          Control Officer shall specify to the owner or operator.  At least
          three tests runs must be conducted before and at least three
          after the physical or operational change.  If the Control Officer
          approves, the results of the emission tests required in Rule
          361.13(a) may be used for the test runs to be conducted before
          the physical or operational change.  All operating parameters
          which may affect emissions must be held constant to the maximum
          degree feasible for all test runs.

               (d)  The following shall not by themselves, be considered
          modifications under this regulation:

                    (1)  Maintenance, repair, and replacement which the
               Control Officer determines to be routine for a source
               category.

                    (2)  An increase in production rate of a stationary
               source, if that increase can be accomplished without a
               capital expenditure on the stationary source.

                    (3)  An increase in the hours of operation.

                    (4)  Any conversion to coal that meets the requirements
               specified in Section 111(a)(8) of the Act.

                    (5)  The relocation or change in ownership of a
               stationary source.  However, such activities must be
               reported in accordance with Rule 361.10(c).


               RULE 361.16.   [RESERVED]


               RULE 361.17.   [RESERVED]