SJVUAPCD RULE 4701 STATNRY INTNL COMBUSTION ENGINES - RACT 
LAST REVISED 03/16/95

RULE 4701 STATIONARY INTERNAL COMBUSTION ENGINES - REASONABLY
          AVAILABLE CONTROL TECHNOLOGY (Adopted May 21, 1992;
          Amended December 17, 1992; Amended October 20, 1994;
          Amended March 16, 1995)

1.0  Purpose

     The purpose of this rule is to limit the emissions of nitrogen
     oxides (NOx) and carbon monoxide (CO) from stationary internal
     combustion engines.  

2.0  Applicability

     2.1  The provisions of this rule are applicable to the following:

          2.1.1     Any natural gas fired stationary internal combustion 
                    engine in the Central and Western Kern County Fields 
                    that is rated at greater than 50 brake horsepower.

          2.1.2     Any gaseous, diesel, or other liquid-fueled stationary 
                    internal combustion engine that is:

                    2.1.2.1   rated at greater than 50 brake horsepower, and 
                    2.1.2.2   part of a major NOx source, and
                    2.1.2.3   located outside of the area west of Interstate 
                              Highway 5 in Fresno, Kern, or Kings county.

     2.2  The requirements of this rule shall not constitute applicable 
          State Implementation Plan requirements pursuant to section 182(f) 
          of the federal Clean Air Act for units located west of Interstate 
          Highway 5 in Fresno, Kern, or Kings county. This section does not 
          relieve owners/operators from complying with any applicable 
          provision of this rule. 

3.0  Definitions

     3.1  Cyclic Loaded Engine: An engine that under normal operating 
          conditions varies in shaft load by 40% or more of rated brake 
          horsepower during recurrent periods of 30 seconds or less or is 
          used to power an oil well reciprocating pump unit.

     3.2  Diesel Engine: Any compression ignited internal combustion engine 
          that is operated with an exhaust stream oxygen concentration of 
          four (4) percent by volume, or greater without add-on controls. 

     3.3  Gaseous Fuel: Any fuel which is a gas at standard conditions 
          including but not limited to natural gas, methane, ethane, propane, 
          butane and liquified petroleum gas (LPG).

     3.4  Lean-Burn Engine: Any gas spark ignited internal combustion engine 
          that is operated with an exhaust stream oxygen concentration of 
          four (4) percent by volume, or greater without add-on controls. 
          Engines listed as lean-burn on their Permit to Operate (PTO) shall 
          be considered lean-burn engines. 

     3.5  Location: Any single site at a building, structure, facility, or 
          installation.

     3.6  Major NOx Source: Any major source as defined in Rule 2201 
          (New and Modified Stationary Source Review Rule), with a potential 
          to emit 50 tons or more per year of NOx. 
          
     3.7  Portable Internal Combustion Engine: An internal combustion engine 
          that is not a stationary internal combustion engine as defined in 
          section 3.0.

     3.8  Rated Brake Horsepower: The continuous brake horsepower rating 
          specified for the engine by the manufacturer and listed on the 
          nameplate of the unit, regardless of any derating, unless limited 
          by the engine's Permit to Operate (PTO).
     
     3.9  Rich-Burn Engine: Any spark ignited internal combustion engine 
          that is operated with an exhaust stream oxygen concentration of 
          less than 4 percent by volume before add-on controls. For engines 
          using a catalyst, the exhaust gas oxygen content shall be 
          determined from the uncontrolled exhaust stream before the catalyst.
     
     3.10 Stationary Internal Combustion Engine (engine): Any spark or 
          compression ignited internal combustion engine that is attached 
          to a foundation at a location or is portable and operated at the 
          location for more than 12 consecutive months, not including engines 
          used for self-propulsion.
     
4.0  Exemptions

     4.1  The provisions of this rule do not apply to engines used directly 
          and exclusively for agricultural operations necessary for the 
          growing of crops or raising of fowl or animals. 

     4.2  Except for the administrative requirements of Section 6.5, the 
          provisions of this rule shall not apply to:

          4.2.1     Emergency standby engines that are used exclusively for 
                    non-utility electric power generation or any other 
                    emergency engines as approved by the APCO that do not 
                    operate more than 200 hours per calendar year for non-
                    emergency purposes and are not used in conjunction with 
                    any utility voluntary demand reduction program.

          4.2.2     Engines used exclusively for fire fighting services and 
                    flood control.

          4.2.3     Laboratory engines used in research and testing.

          4.2.4     Engines operated for purposes of performance verification 
                    and testing.

          4.2.5     Gas turbine engines.

          4.2.6     Portable internal combustion engines.

          4.2.7     Engines using other fuels during natural gas curtailment 
                    that are normally fired with natural gas fuel.  This 
                    exemption is limited to 336 cumulative hours of operation 
                    per calendar year.

5.0  Requirements
     
     5.1  The owner/operator of any stationary internal combustion engine 
          shall not operate such engine under load in such a manner that 
          results in emissions exceeding the following limits:


          Engine Type                NOx                    CO 

          Rich-Burn            9.5 g/bhp-hr or           2000 ppmv
                                  640 ppmv

          Lean-Burn            10.1 g/bhp-hr or          2000 ppmv 
                                  740 ppmv

          Diesel Fired         9.6 g/bhp-hr or           2000 ppmv
                                  700 ppmv               

          where:  g/bhp-hr     = grams per brake horsepower hour
                  Nox          = oxides of nitrogen, calculated as
                                 equivalent NO2
                  CO           = carbon monoxide
                 ppmv          = parts per million by volume at 15%
                                 Oxygen on a dry basis.

     5.2  Owners/operators of natural gas fired engines in the Central and 
          Western Kern County Fields excluding cyclic loaded engines, and 
          owners/operators of engines not meeting the NOx levels required 
          in Section 5.1 by May 31, 1995, shall not operate such engine 
          under load in such a manner that results in emissions exceeding 
          the following emission limits:

          
          Engine Type             NOx (ppmv)              CO (ppmv)

          Rich-Burn                  90                     2000

          Lean-Burn                 150                     2000

          Diesel Fired              600                     2000


          where:  ppmv    = parts per million by volume at 15%
                            Oxygen on a dry basis
                  Nox     = oxides of nitrogen, calculated as 
                            equivalent  NO2
                  CO      = carbon monoxide

          Or,

          5.2.1     for rich-burn engines, the exhaust NOx emission 
                    concentrations are reduced by at least 90% after 
                    add-on controls in the initial tests for engineering 
                    evaluation purposes after installation or replacement, 
                    and are maintained to reduce emissions by at least 80%
                    thereafter;

          5.2.2     for lean-burn engines, the exhaust NOx emission concen-
                    trations are reduced by at least 80% after add-on 
                    controls in the initial tests for engineering evaluation 
                    purposes after installation or replacement, and are 
                    maintained to reduce emissions by at least 70% thereafter;

          5.2.3     for diesel fired engines, the exhaust NOx emission 
                    concentrations are reduced by at least 30% after add-on  
                    controls in the initial tests for engineering evaluation 
                    purposes after installation or replacement, and are 
                    maintained to reduce emissions by at least 20% thereafter.

     5.3  In lieu of compliance with the emission limits of Sections 5.1 or 
          5.2, an owner/operator of any internal combustion engine may elect 
          to replace the engine with an electric motor or permanently remove 
          it from service in accordance with the applicable compliance 
          schedule specified in section 7.5. NOx emission reductions achieved 
          by the electrification or shutdown of an engine shall not be 
          available for emission reduction credit (ERC).
 
     Emission measurements for engines using CEMs shall be averaged over not 
     less than 15 consecutive minutes of engine operation.

     5.4  Monitoring Equipment

          The owner/operator of any engine subject to the provisions of this 
          rule shall:

          5.4.1     Install, operate and maintain controls as recommended by 
                    the emission control system supplier and as approved by 
                    the APCO to ensure compliance with the emission limita-
                    tions of this rule; or

          5.4.2     Use analytical equipment and procedures, as recommended 
                    by the APCO, maintained in good working order, which 
                    indicate:

                    5.4.2.1   For rich-burn engines:

                              5.4.2.1.1    exhaust gas NOx and CO emission
                                           concentrations; or

                              5.4.2.1.2    air to fuel ratio, or other 
                                           parameter settings, within 
                                           tolerance limits as recommended
                                           by the emission control system
                                           supplier and as approved by the
                                           APCO.

                    5.4.2.2   For lean-burn engines using an ammonia 
                              injection emission control system:

                              5.4.2.2.1    exhaust gas NOx concentration; or 
                              
                              5.4.2.2.2    flow rate of reducing liquids or 
                                           gases added to the exhaust gases 
                                           in the operation of catalyst NOx 
                                           reduction systems or other para-
                                           meter settings as specified by the 
                                           emission control system supplier.

6.0  Administrative Requirements

     6.1  Emission Control Plan

          The owner/operator of any engine subject to the provisions of this 
          rule shall submit to the APCO an emissions control plan of all 
          actions to be taken to satisfy  the requirements of Section 5.0.

          6.1.1     Such plan shall contain a list that provides the 
                    following for each stationary internal
               combustion engine:

               6.1.1.1   Permit to Operate number 
               6.1.1.2   engine manufacturer 
               6.1.1.3   model designation 
               6.1.1.4   rated brake horsepower 
               6.1.1.5   type of fuel and type of ignition 
               6.1.1.6   combustion type: rich-burn or lean-burn

          6.1.2     Such plan shall identify the type of emission controls 
                    to be applied to each engine, and a construction/removal 
                    schedule, or shall provide support documentation 
                    sufficient to demonstrate that the engine is in compli-
                    ance with the emission limits of this rule.

     6.2  Recordkeeping

          The owner/operator of any stationary internal combustion engine 
          subject to the provisions of this rule shall maintain an engine 
          operating log that includes on a monthly basis, the total hours 
          of operation and the type and quantity of fuel used.  This 
          information shall be maintained for a period of two years and 
          submitted to the APCO upon request.

     6.3  Compliance Testing

          6.3.1     Except those engines utilizing Continuous Emission 
                    Monitoring systems (CEMs), the owner/operator of any 
                    stationary internal combustion engine subject to the 
                    provisions of this rule, shall demonstrate compliance 
                    with the requirements of Section 5.0 at least once every
                    8760 hours of operation. Test results submitted to the 
                    District from an engine that represent a group of engines 
                    in terms of rated brake horsepower, engine make and 
                    series, operational conditions, fuel used, and control 
                    method, shall satisfy these requirements, provided this
                    group of engines is owned and operated by a single 
                    owner/operator. Selection of representative engines to be 
                    tested shall be approved in writing by the APCO prior to 
                    testing.

          6.3.2     Engines utilizing Continuous Emission Monitoring systems 
                    (CEMs) shall demonstrate compliance with the requirements 
                    of Section 5.0 at least once every 17,520 hours of 
                    operation.

     6.4  Test Methods

          Compliance with the requirements of section 5.0 shall be determined 
          in accordance with the following test procedures:

          6.4.1     Oxides of nitrogen- EPA Method 7E, or ARB Method 100.
          6.4.2     Carbon monoxide- EPA Method 10, or ARB Method 100.
          6.4.3     Stack gas oxygen- EPA Method 3 or 3A, or ARB Method 100.

     6.5  Exempt engines

          Any owner/operator claiming an exemption under Section 4.2 shall:

          6.5.1     submit support documentation identifying reasons for the 
                    exemption.  Such documentation shall contain a list that 
                    provides the following for each stationary internal 
                    combustion engine:

                    6.5.1.1   Permit to Operate number 
                    6.5.1.2   engine manufacturer 
                    6.5.1.3   model designation 
                    6.5.1.4   rated brake horsepower 
                    6.5.1.5   type of fuel and type of ignition 

          6.5.2     maintain annual operating records and/or support 
                    documentation necessary to claim exemption.  This 
                    information shall be maintained for two years and 
                    submitted to the APCO upon request.

          6.5.3     Any owner/operator of an emergency standby engine 
                    claiming exemption under Section 4.2.1, shall comply 
                    with the requirements of Section 5.0 before resuming the 
                    operation of the engine on a routine, non-standby basis, 
                    and in accordance with the compliance schedule set in 
                    Section 7.4.

7.0  Compliance Schedule

     7.1  By March 20, 1995, owners/operators of engines subject to the 
          provisions of this rule shall submit to the APCO an emission 
          control plan pursuant to Section 6.1, or support documentation for 
          each exempt engine, pursuant to Section 6.5.

     7.2  Natural gas fired engines in Central and Western Kern County Fields 
          excluding cyclic loaded engines:

          7.2.1     Owners/operators of rich-burn engines rated at greater 
                    than 50 and less than 200 brake horsepower, and lean-burn 
                    engines rated at greater than 50 and less than 500 brake 
                    horsepower, shall comply with the following schedule:

                    7.2.1.1   By March 20, 1995, submit a complete applica-
                              tion for an Authority to Construct (ATC) as 
                              necessary.

                    7.2.1.2   By December 31, 1995, demonstrate full compli-
                              ance with the emission limits of Section 5.2.

          7.2.2     Owners/operators of all other engines shall submit 
                    documentation demonstrating compliance with the emission 
                    limits of Section 5.2 by March 20, 1995.

     7.3  Engines outside Central and Western Kern County Fields, liquid-
          fueled engines and LPG engines operating on those fuels on 
          October 20, 1994 in Central and Western Kern County Fields, and 
          cyclic loaded engines in the Central and Western Kern County Fields:

          7.3.1     Owners/operators of engines complying with the emission 
                    limits of Section 5.1, shall meet the following schedule:

                    7.3.1.1   By March 20, 1995, submit a complete applica-
                              tion for an Authority to Construct (ATC) as 
                              necessary.

                    7.3.1.2   By May 31, 1995, demonstrate full compliance 
                              with the requirements of this rule.

          7.3.2     Owners/operators of engines complying with the emission 
                    limits of Section 5.2, shall meet the following schedule:

                    7.3.2.1   By May 31, 1995, submit a complete application 
                              for an Authority to Construct (ATC) for all 
                              modifications to meet the requirements of this 
                              rule.

                    7.3.2.2   By May 31, 1997, except for engines subject to 
                              Section 7.3.2.3 shall demonstrate full compli-
                              ance with the requirements of this rule.

                    7.3.2.3   By May 31, 1999, engines operated by a public 
                              water district, shall demonstrate full compli-
                              ance with the requirements of this rule.

     7.4  Any owner/operator of an engine which becomes subject to the 
          emission limits of this rule through loss of exemption, shall:

          7.4.1     Within 30 days from loss of exemption, submit a complete 
                    application for an Authority to Construct for all 
                    modifications to meet the requirements of this rule.

          7.4.2     Within 12 months from loss of exemption, demonstrate full 
                    compliance with the requirements of this rule. 

     7.5  Any owner/operator who elects to replace an engine with an 
          electric motor or remove it permanently from service as specified 
          in section 5.3, shall:

          7.5.1     submit a complete application for an Authority to 
                    Construct for conversion to electric power no later 
                    than May 31, 1997;

          7.5.2     have the engine removed from service by May 31, 1999.

8.0  Alternative Emission Control

     8.1  An owner/operator may achieve compliance with Section 5.2 by 
          substituting equivalent NOx emissions reductions obtained by 
          controlling of existing engines at the same stationary source 
          provided the applicant submits an Alternative Emission Control 
          Plan that is enforceable by the District and receives approval 
          in writing of such plan from the APCO prior to implementation.

     8.2  Where emission reductions are to be accomplished through the use 
          of a non-catalytic control device that will not degrade over the 
          life of the device, compliance with Section 5.2.1 shall be 
          demonstrated if the device can maintain emission reduction by at 
          least 80 percent notwithstanding the control technology's inability 
          to meet the initial 90 percent reduction required by such Section. 

     8.3  The Alternative Emission Control Plan shall:

          8.3.1     Contain, as a minimum, in addition to requirements of 
                    Section 6.1 of this rule, all data, records, and other 
                    information necessary to determine eligibility of the 
                    engines for alternative emission control, including but 
                    no limited to:

                    8.3.1.1   list of engines subject to alternative emission 
                              control;

                    8.3.1.2   daily average and maximum hours of utilization 
                              for such engines; and 

                    8.3.1.3   estimated emission level for such engines with 
                              and without NOx emission controls.

          8.3.2     Present the methodology for estimation of equivalency of 
                    emission reductions under the proposed Alternative 
                    Emission Control Plan as compared to either the emission 
                    reductions required by the applicable rules or to actual 
                    emission, whichever is less.

     8.4  Demonstrate to the satisfaction of the APCO that the difference 
          between the emissions allowable by existing regulations and any 
          lower actual emissions will not be used to increase emissions from 
          the same or another source.

     8.5  Demonstrate that the permit units subject to the specified rule 
          emission limitations are in compliance with or on an approved 
          schedule for compliance with all applicable District rules.

     8.6  Submit an updated or modified Alternative Emission Control Plan:

          8.6.1     Prior to modification of the engine(s) subject to 
                    alternative emission control; or

          8.6.2     When new or amended specified rules are adopted which 
                    regulate the emissions of any air contaminant from the 
                    engine(s) subject to alternative emission control.