YSAQMD ADDENDUM - EXHIBIT A                                         
LAST REVISED 11/11/11
                                         
                                         ADDENDUM

                                      EXHIBIT A

                      YOLO-SOLANO AIR POLLUTION CONTROL DISTRICT
                     PERFORMANCE STANDARDS FOR DESIGNATED SOURCES

          SECTION I.     General Definitions
                         A.   "Affected facility" includes all apparatus to
                              which a standard is applicable.
                         B.   "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 contractual
                              obligation to undertake and complete, within
                              a reasonable time, a continuous program of
                              construction or modification.
                         C.   "Construction" means fabrication, erection or
                              installation of an affected facility.
                         D.   "Malfunction" means any sudden and
                              unavoidable failure of air pollution control
                              equipment or process equipment or of a
                              process to operate in a normal or usual
                              manner. Failures that are caused entirely or
                              in part by poor maintenance, careless
                              operation or any other preventable upset
                              condition or preventable equipment breakdown
                              shall not be considered malfunctions.
                         E.   "Modification" means any physical change in,
                              or change in the method of operation of, an
                              affected facility which increases the amount
                              of any air pollutant (to which a standard
                              applies) emitted by such facility or which
                              results in the emission of any air pollutant
                              (to which a standard applies) not previously
                              emitted, except that:
                              1.   Routine maintenance, repair and
                                   replacement shall not be considered
                                   physical changes, and
                              2.   The following shall not be considered a
                                   change in the method of operation:
                                   An increase in the production rate, if
                                   such increase does not exceed the
                                   operating design capacity of the
                                   affected facility.
                                   An increase in hours of operation.
                         F.   "Owner or operator" means any person who
                              owns, leases, operates, controls or
                              supervises an affected facility or stationary
                              source of which the affected facility is a
                              part.
                         G.   "Shutdown" means the cessation of operation
                              of an affected facility for any purpose.
                         H.   "Start up" means the setting in operation of
                              an affected facility for any purpose.
          SECTION II.    New Sources
                         A.   Standards of Performance for Fossil Fuel-
                              Fired Steam Generators
                              1.   Definitions
                                   a.   "Fossil fuel-fired steam generating
                                        unit" means a furnace or boiler
                                        used in the process of burning
                                        fossil fuel for the purpose of
                                        producing steam by heat transfer.
                                   b.   "Fossil fuel" means natural gas,
                                        petroleum, coal and any form of
                                        solid, liquid or gaseous fuel
                                        derived from such materials for the
                                        purpose of creating useful heat.
                              2.   Emission Standard This rule applies to
                                   all fossil fuel-fired steam generating
                                   units, the construction or modification
                                   of which commenced after August 17,
                                   1971, of more than 250 million B.T.U.
                                   per hour heat input. Any change to an
                                   existing fossil fuel-fired steam
                                   generating unit to accommodate the use
                                   of combustible materials, other than
                                   fossil fuels as defined in this Rule,
                                   shall not bring that unit under the
                                   applicability of this Rule.
                                   a.   On or after the date on which the
                                        performance test required to be
                                        conducted is completed, no owner or
                                        operator subject to the provisions
                                        of this Rule shall cause to be
                                        discharged into the atmosphere from
                                        any affected facility any gases
                                        which:
                                        (1)  Contain particulate matter in
                                             excess of 0.10 lb. per million
                                             B.T.U. heat input derived from
                                             fossil fuel.
                                        (2)  Exhibit 20% opacity or greater
                                             except that a maximum of 40%
                                             opacity shall be permissible
                                             for not more than 2 minutes in
                                             any one hour. Where the
                                             presence of uncombined water
                                             is the only reason for failure
                                             to meet the requirements of
                                             this paragraph, such failure
                                             shall not be a violation of
                                             this Rule.
                                   b.   On and after the date on which the
                                        performance test required to be
                                        conducted is completed, no owner or
                                        operator subject to the provisions
                                        of this Rule shall cause to be
                                        discharged into the atmosphere from
                                        any affected facility any gases
                                        which contain sulfur dioxide in
                                        excess of:
                                        (1)  0.80 lb. per million B.T.U.
                                             heat input when liquid fossil
                                             fuel is burned.
                                        (2)  1.2 lbs. per million B.T.U.
                                             heat input when solid fossil
                                             fuel is burned.
                                        (3)  Where different fossil fuels
                                             are burned simultaneously in
                                             any combination, the
                                             applicable standard shall be
                                             determined by proration using
                                             the following formula:

                                                   y (0.80) + z (1.2)
                                                   ------------------
                                                         y + z
                                   where     y is the percent of total heat
                                             input derived from liquid
                                             fossil fuel,
                                   and       z is the percent of total heat
                                             input derived from solid
                                             fossil fuel.
                                        (4)  Compliance shall be based on
                                             total heat input from all
                                             fossil fuels burned, including
                                             gaseous fuels.
                                   c.   On and after the date on which the
                                        performance test required to be
                                        conducted is completed, no owner or
                                        operator subject to the provisions
                                        of this Rule shall cause to be
                                        discharged into the atmosphere from
                                        any affected facility any gases
                                        which contain nitrogen oxides in
                                        excess of:
                                        (1)  0.20 lb. per million B.T.U.
                                             heat input when gaseous fuel
                                             is burned.
                                        (2)  0.30 lb. per million B.T.U.
                                             heat input when liquid fuel is
                                             burned.
                                        (3)  0.70 lb. per million B.T.U.
                                             heat input when solid fuel is
                                             burned.
                                        (4)  Where different fossil fuels
                                             are burned simultaneously in
                                             any combination, the
                                             applicable standard shall be
                                             determined by proration using
                                             the following formula:

                                             x (0.20) + y (0.30) + z (0.70)
                                             -----------------------------
                                                       x + y + z
                                   where     x is the percent of total heat
                                             input derived from gaseous
                                             fossil fuel, y is the percent
                                             of total heat input derived
                                             from liquid fossil fuel, and z
                                             is the percent of total heat
                                             input derived from solid
                                             fossil fuel (except lignite).
                              3.   Monitoring
                                   a.   There shall be installed,
                                        calibrated, maintained and
                                        operated, in any fossil fuel-fired
                                        steam generating unit subject to
                                        the provisions of this part,
                                        emission monitoring instruments, as
                                        follows:
                                        (1)  A photoelectric or other type
                                             smoke detector and recorder,
                                             except where gaseous fuel is
                                             the only fuel burned.
                                        (2)  An instrument for continuously
                                             monitoring and recording
                                             sulfur dioxide emissions,
                                             except where gaseous fuel is
                                             the only fuel burned, or where
                                             compliance is achieved through
                                             low sulfur fuels and
                                             representative sulfur analysis
                                             of fuels are conducted daily.
                                             Analysis of all fuel received
                                             may be substituted for daily
                                             fuel analysis if this will
                                             assure accurate knowledge of
                                             sulfur content of fuel as
                                             burned. When fuels must be
                                             blended to achieve compliance,
                                             sulfur analysis of fuels may
                                             not be used and SO2 monitoring
                                             is required.
                                        (3)  An instrument for continuously
                                             monitoring and recording
                                             emissions of nitrogen oxides.
                                   b.   Instruments and sampling systems
                                        installed and used pursuant to this
                                        section shall be capable of
                                        monitoring emission levels within 
                                        20 percent with a confidence level
                                        of 95 percent and shall be
                                        calibrated in accordance with the
                                        method(s) prescribed by the
                                        manufacturer(s) of such
                                        instruments. Instruments shall be
                                        subjected to manufacturers'
                                        recommended zero adjustment and
                                        calibration procedures at least
                                        once per 24-hour operating period
                                        unless the manufacturer(s)
                                        specifies or recommends calibration
                                        at shorter intervals, in which case
                                        such specifications or
                                        recommendations shall be followed.
                                   c.   The sulfur content of solid fuels,
                                        as burned, shall be determined in
                                        accordance with the following
                                        methods of the American Society for
                                        Testing and Materials.
                                        (1)  Mechanical sampling by Method
                                             D 2234-65.
                                        (2)  Sample preparation by Method D
                                             2013-65.
                                        (3)  Sample analysis by Method D
                                             271-68.
                                   d.   The sulfur content of liquid fuels,
                                        as burned, shall be determined in
                                        accordance with the American
                                        Society for Testing and Materials
                                        Methods D 1551-68 or D 129-64 or D
                                        1552-64.
                                   e.   The rate of fuel burned for each
                                        fuel shall be measured daily or at
                                        shorter intervals and recorded. The
                                        heating value and ash content of
                                        fuels shall be ascertained at least
                                        once per week and recorded. Where
                                        the steam generating unit is used
                                        to generate electricity, the
                                        average electrical output and
                                        minimum and maximum hourly
                                        generation rate shall be measured
                                        and recorded daily.
                                   f.   For the purpose of reports
                                        required, periods of excess
                                        emissions that shall be reported
                                        are defined as follows:
                                        (1)  Opacity. All hourly periods
                                             during which there are three
                                             or more one-minute periods
                                             when the average opacity
                                             equals or exceeds 20 percent.
                                        (2)  Sulfur Dioxide. Any two
                                             consecutive hourly periods
                                             during which average sulfur
                                             dioxide emissions exceed 0.80
                                             lb. per million B.T.U. heat
                                             input for liquid fossil fuel
                                             burning equipment or exceed
                                             1.2 lb. per million B.T.U.
                                             heat input for solid fossil
                                             fuel burning equipment; or for
                                             sources which elect to conduct
                                             representative analyses of
                                             fuels in lieu of installing
                                             and operating a monitoring
                                             device any calendar day during
                                             which fuel analysis shows that
                                             the emission standard limits
                                             are exceeded.
                                        (3)  Nitrogen Oxides. Any two
                                             consecutive hourly periods
                                             during which the average
                                             nitrogen oxides emissions
                                             exceed 0.20 lb per million
                                             B.T.U. heat input for gaseous
                                             fossil fuel burning equipment,
                                             or exceed 0.30 lb. per million
                                             B.T.U. heat input for liquid
                                             fossil fuel burning equipment,
                                             or exceed 0.70 lb. per million
                                             B.T.U. heat input for solid
                                             fossil fuel burning equipment.
                         B.   Standard of Performance for Asphalt Concrete
                              Plants
                              1.   Definitions
                                   a.   "Asphalt concrete plant" means any
                                        facility as described below used to
                                        manufacture asphalt concrete by
                                        heating and drying aggregate and
                                        mixing with asphalt concrete.
                              2.   Emission Standard. This rule applies to
                                   asphalt concrete plants, the
                                   construction or modification of which
                                   commenced after June 11, 1973. For the
                                   purpose of this rule, an asphalt
                                   concrete plant is comprised only of any
                                   combination of the following: Dryers;
                                   systems for screening, handling, storing
                                   and weighing hot aggregate; systems for
                                   loading, transferring, and storing
                                   mineral filler; systems for mixing
                                   asphalt concrete; and the loading,
                                   transfer and storage systems associated
                                   with emission control systems.

                                   On or after the date on which the
                                   performance test required to be
                                   conducted is completed, no owner or
                                   operator subject to the provisions of
                                   this Rule shall cause to be discharged
                                   into the atmosphere from any affected
                                   facility any gases which:
                                   a.   Contain particulate matter in
                                        excess 0.04 gr/dscf.
                                   b.   Exhibit 20 percent opacity, or
                                        greater. Where the presence of
                                        uncombined water is the only reason
                                        for failure to meet the
                                        requirements of this paragraph,
                                        such failure shall not be a
                                        violation of this Rule.
                              3.   Monitoring. The production rate and
                                   hours of operation shall be monitored
                                   and recorded daily.
                         C.   Standard of Performance for Storage Vessels
                              for Petroleum Liquids
                              1.   Definitions
                                   a.   "Condensate" means hydrocarbon
                                        liquid separated from natural gas
                                        which condenses due to change in
                                        the temperature and/or pressure and
                                        remains liquid at standard
                                        conditions.
                                   b.   "Custody transfer" means the
                                        transfer of produced petroleum
                                        and/or condensate, after processing
                                        and/or treating in the producing
                                        operations, from storage tanks or
                                        automatic transfer facilities to
                                        pipelines or any other form of
                                        transportation.
                                   c.   "Drilling and production facility"
                                        means all drilling and servicing
                                        equipment, wells, flow lines,
                                        separators, equipment, gathering
                                        lines and auxiliary non-
                                        transportation-related equipment
                                        used in the production of petroleum
                                        but does not include natural
                                        gasoline plants.
                                   d.   "Floating roof" means a storage
                                        vessel cover consisting of a double
                                        deck, pontoon, single deck,
                                        internal floating cover or covered
                                        floating roof, which rests upon and
                                        is supported by the petroleum
                                        liquid being contained, and is
                                        equipped with a closure seal or
                                        seals to close the space between
                                        the roof edge and tank wall.
                                   e.   "Hydrocarbon" means any organic
                                        compound consisting predominantly
                                        of carbon and hydrogen.
                                   f.   "Petroleum" means the crude oil
                                        removed from the earth and the oils
                                        derived from tar sands, shale and
                                        coal.
                                   g.   "Petroleum liquids" means
                                        petroleum, condensate and any
                                        finished or intermediate products
                                        manufactured in a petroleum
                                        refinery but does not mean Number 2
                                        through Number 6 fuel oils as
                                        specified in ASTM-D-396-69, gas
                                        turbine fuel oils Number 2-GT
                                        through 4-GT specified in ASTM-D-
                                        2880-71, or diesel fuel oils
                                        Numbers 2-D and $-D as specified in
                                        ASTM-D-975-68.
                                   h.   "Petroleum refinery" means any
                                        facility engaged in producing
                                        gasoline, kerosene, distillate fuel
                                        oils, residual fuel oils,
                                        lubricants, or other products
                                        through distillation of petroleum
                                        or through redistillation,
                                        cracking, or reforming of
                                        unfinished petroleum derivatives.
                                   i.   "Reid vapor pressure" is the
                                        absolute vapor pressure of volatile
                                        crude oil and volatile non-viscous
                                        petroleum liquids, except liquified
                                        petroleum gases, as determined by
                                        ASTM-D-323-58 (reapproved 1968).
                                   j.   "Storage vessel" means any tank,
                                        reservoir, or container used for
                                        the storage of petroleum liquids
                                        but does not include:
                                        (1)  Pressure vessels which are
                                             designed to operate in excess
                                             of 15 pounds per square inch
                                             gauge without emissions to the
                                             atmosphere except under
                                             emergency conditions,
                                        (2)  Subsurface caverns or porous
                                             rock reservoirs, or
                                        (3)  Underground tanks if the total
                                             volume of petroleum liquids
                                             added to and taken from a tank
                                             annually does not exceed twice
                                             the volume of the tank.
                                   k.   "True vapor pressure" means the
                                        equilibrium partial pressure
                                        exerted by a petroleum liquid as
                                        determined in accordance with the
                                        methods described in American
                                        Petroleum Institute Bulletin 2517,
                                        "Evaporation Loss from Floating
                                        Roof Tanks", 1962.
                                   l.   "Vapor recovery system" means a
                                        vapor gathering system capable of
                                        collecting all hydrocarbon vapors
                                        and gases discharged from the
                                        storage vessel and a vapor disposal
                                        system capable of processing such
                                        hydrocarbon vapors and gases so as
                                        to prevent their emission to the
                                        atmosphere.
                              2.   Emission Standard. This rule applies to
                                   storage vessels for petroleum liquids,
                                   the construction or modification of
                                   which commenced after March 8, 1974, of
                                   more than 40,000 gallons storage
                                   capacity except it shall not apply to
                                   storage vessels for petroleum or
                                   condensate stored, processed, and/or
                                   treated at a drilling and production
                                   facility prior to custody transfer.

                                   The owner or operator of any storage
                                   vessel to which this rule applies shall
                                   store petroleum liquids as follows:
                                   a.   If the true vapor pressure of the
                                        petroleum liquid, as stored, is
                                        equal to or greater than 78 mm Hg
                                        (1.5 psia) but not greater than 570
                                        mm Hg (11.1 psia) the storage
                                        vessel shall be equipped with a
                                        floating roof, a vapor recovery
                                        system, or their equivalents.
                                   b.   If the true vapor pressure of the
                                        petroleum liquid, as stored, is
                                        equal to or greater than 570 mm Hg
                                        (11.1 psia) the storage vessel
                                        shall be equipped with a vapor
                                        recovery system or its equivalent.
                              3.   Monitoring. The owner or operator of any
                                   storage vessel to which this rule
                                   applies shall for each such storage
                                   vessel maintain a file of each type of
                                   petroleum liquid stored, and of the
                                   dates of storages. Dates on which the
                                   storage vessel is empty shall be shown.

                                   The owner or operator of any storage
                                   vessel to which this rule applies shall
                                   for each such storage vessel determine
                                   and record the average monthly storage
                                   temperature and true vapor pressure of
                                   the petroleum liquid stored at such
                                   temperature if:
                                   a.   The petroleum liquid has a true
                                        vapor pressure, as stored, greater,
                                        than 26 mm Hg (0.5 psia) but less
                                        than 78 mm Hg (1.5 psia) and is
                                        stored in a storage vessel other
                                        than one equipped with a floating
                                        roof, a vapor recovery system or
                                        their equivalents; or
                                   b.   The petroleum liquid has a true
                                        vapor pressure, as stored, greater,
                                        than 470 mm Hg (9.1 psia) and is
                                        stored in a storage vessel other
                                        than one equipped with a vapor
                                        recovery system or its equivalent.
                                   The average monthly storage temperature
                                   is an arithmetic average calculated for
                                   each calendar month, or portion thereof
                                   if storage is for less than a month,
                                   from bulk liquid storage temperatures
                                   determined at least every 7 days.

                                   The true vapor pressure shall be
                                   determined by the procedure in API
                                   Bulletin 2517. This procedure is
                                   dependent upon determination of the
                                   storage temperature and the Reid vapor
                                   pressure, which requires sampling of the
                                   petroleum liquids in the storage
                                   vessels. Unless the Control Officer
                                   requires in specific cases that the
                                   stored petroleum liquid be sampled, the
                                   true vapor pressure may be determined by
                                   using the average monthly storage
                                   temperature and the typical Reid vapor
                                   pressure. For those liquids for which
                                   certified specifications limiting the
                                   Reid vapor pressure exist, that Reid
                                   vapor pressure may be used. For other
                                   liquids, supporting analytical data must
                                   be made available on request to the
                                   Control Officer when typical Reid vapor
                                   pressure is used.
                         D.   Standards of Performance for Electric Arc
                              Furnaces
                              1.   Definitions
                                   a.   "Electric arc furnace (EAF)" means
                                        any furnace that produces molten
                                        steel and heats the charge
                                        materials with electric arcs from
                                        carbon electrodes.
                                   b.   "Dust-handling equipment" means any
                                        equipment used to handle
                                        particulate matter collected by the
                                        control device and located at or
                                        near the control device for an EAF
                                        subject to this sub-part.
                                   c.   "Control device" means the air
                                        pollution control equipment used to
                                        remove particulate matter generated
                                        by an EAF(s) from the effluent gas
                                        system.
                                   d.   "Capture system" means the
                                        equipment (including ducts, hoods,
                                        fans, dampers, etc.) used to
                                        capture or transport particulate
                                        matter generated by an EAF to the
                                        air pollution control device.
                                   e.   "Charge" means the addition of iron
                                        and steel scrap or other materials
                                        into the top of an electric arc
                                        furnace.
                                   f.   "Charging period" means the time
                                        EAF starts to open and ending
                                        either three minutes after the EAF
                                        roof is returned to its closed
                                        position or six minutes after
                                        commencement of opening the roof,
                                        whichever is longer.
                                   g.   "Tap" means the pouring of molten
                                        steel from the EAF.
                                   h.   "Tapping period" means the time
                                        period commencing at the moment an
                                        EAF begins to tilt to pour and
                                        ending either three minutes after
                                        an EAF returns to an upright
                                        position or six minutes after
                                        commencing to tilt, whichever is
                                        longer.
                                   i.   "Meltdown and refining" means the
                                        time period commencing at the
                                        termination of the initial charging
                                        period and ending at the initiation
                                        of the tapping period, excluding
                                        any intermediate charging periods.
                                   j.   "Meltdown and refining period"
                                        means that phase of the steel
                                        production cycle when charge
                                        material is melted and undesirable
                                        elements are removed from the
                                        metal.
                                   k.   "Shop opacity" means the arithmetic
                                        average of 24 or more opacity
                                        observations of emissions from the
                                        shop for the applicable time
                                        periods.
                                   l.   "Heat time" means the period
                                        commencing when scrap is charged to
                                        an empty EAF and terminating when
                                        the EAF tap is completed.
                                   m.   "Shop" means the building which
                                        houses one or more EAFs.
                                   n.   "Direct shell evacuation system"
                                        means any system that maintains a
                                        negative pressure within an EAF
                                        above the slag or metal and ducts
                                        these emissions to the control
                                        device.
                              2.   Emission Standard
                                   a.   No owner or operator subject to the
                                        provisions of this sub-part shall
                                        cause to be discharged into the
                                        atmosphere from an electric arc
                                        furnace any gases which:
                                        (1)  Exit from a control device and
                                             contain particulate matter in
                                             excess of 12 mg/dscm (0.0052
                                             gr/dscf).
                                        (2)  Exit from a control device and
                                             exhibit three percent opacity
                                             or greater.
                                        (3)  Exit from a shop and, due
                                             solely to operations of any
                                             EAF(s), exhibit greater than
                                             zero percent shop opacity.
                                   b.   No owner or operator subject to the
                                        provisions of this sub-part shall
                                        cause to be discharged into the
                                        atmosphere from dust-handling
                                        equipment any gases which exhibit
                                        10 percent opacity or more.
                              3.   Emission Monitoring
                                   a.   A continuous monitoring system for
                                        the measurement of the opacity of
                                        emissions into the atmosphere from
                                        the control device(s) shall be
                                        installed, calibrated, maintained
                                        and operated by the owner or
                                        operator subject to the provisions.
                                   b.   For the purpose of reports, periods
                                        of excess emissions that shall be
                                        reported are defined as all six-
                                        minute periods during which the
                                        average opacity is three percent or
                                        greater.
                              4.   Operations Monitoring
                                   a.   The owner or operator subject to
                                        the provisions shall maintain
                                        records daily of the following
                                        information:
                                        (1)  Time and duration of each
                                             charge;
                                        (2)  Time and duration of each tap;
                                        (3)  All flow rate data obtained
                                             under paragraph b. of this
                                             section, or equivalent
                                             obtained under paragraph d.;
                                        (4)  All pressure data obtained
                                             under paragraph (3) of this
                                             section.
                                   b.   Except as provided under paragraph
                                        d. of this section, the owner or
                                        operator subject to the provisions
                                        shall install, calibrate and
                                        maintain a monitoring device that
                                        continuously records the volumetric
                                        flow rate through each separately
                                        ducted hood. The monitoring
                                        device(s) shall have an accuracy of
                                         10 percent over its normal
                                        operating range and shall be
                                        calibrated according to the
                                        manufacturer's instructions. The
                                        APCO may require the owner or
                                        operator to demonstrate the
                                        accuracy of the monitoring
                                        device(s).
                                   c.   When the owner or operator of an
                                        EAF is required to demonstrate
                                        compliance with the standard and at
                                        any other time the APCO may
                                        require, the volumetric flow rate
                                        through each separately ducted hood
                                        shall be determined during all
                                        periods in which the hood is
                                        operated for the purpose of
                                        capturing emissions from the EAF
                                        using the monitoring device under
                                        paragraph b. of this section. The
                                        owner or operator may petition the
                                        APCO for reestablishment of these
                                        flow rates whenever the owner or
                                        operator can demonstrate to the
                                        APCO's satisfaction that the EAF
                                        operating conditions upon which the
                                        flow rates were previously
                                        established are no longer
                                        applicable. The flow rates
                                        determined during the most recent
                                        demonstration of compliance shall
                                        be maintained(or may be exceeded)
                                        at the appropriate level for each
                                        applicable period. Operation at
                                        lower flow rates may be considered
                                        by the APCO to be unacceptable
                                        operation and maintenance of the
                                        affected facility.
                                   d.   The owner or operator may petition
                                        the APCO to approve any alternative
                                        method that will provide a
                                        continuous record of operation of
                                        each emission capture system.
                                   e.   Where emissions during any phase of
                                        the operations are controlled by
                                        use of a direct shell evacuation
                                        system, the owner or operator shall
                                        install, calibrate and maintain a
                                        monitoring device that continuously
                                        records the pressure in the free
                                        space inside the EAF. The pressure
                                        shall be recorded as 15-minute
                                        integrated averages. The monitoring
                                        device may be installed in
                                        appropriate location in the EAF
                                        such that reproducible results will
                                        be obtained. The pressure
                                        monitoring device shall have an
                                        accuracy of  5 mm of water gauge
                                        over its normal operating range and
                                        shall be calibrated according to
                                        the manufacturer's instructions.
                                   f.   When the owner or operator of an
                                        EAF is required to demonstrate
                                        compliance with the standard and at
                                        any other time the APCO may
                                        require, the pressure in the free
                                        space inside the furnace shall be
                                        determined using the monitoring
                                        device under paragraph e. of this
                                        section. The owner or operator may
                                        petition the APCO for
                                        reestablishment of the 15-minute
                                        integrated average pressure
                                        whenever the owner or operator can
                                        demonstrate to the APCO's
                                        satisfaction that the EAF operating
                                        conditions upon which the pressures
                                        were previously established are no
                                        longer applicable.

                                        The pressure determined during the
                                        most recent demonstration of
                                        compliance shall be maintained at
                                        all times the EAF is operating.
                                        Operation at higher pressures may
                                        be considered by the APCO to be
                                        unacceptable operation and
                                        maintenance of the affected
                                        facility.
                                   g.   Where the capture system is
                                        designed and operated such that all
                                        emissions are captured and ducted
                                        to a control device, the APCO may
                                        waive any or all the requirements
                                        of this section.
          SECTION III.   Hazardous Air Pollutant Sources
                         A.   Emission Standard for Asbestos
                              1.   Definitions
                                   a.   "Asbestos" means actinolite,
                                        amosite, anthophyllite, chrysotile,
                                        crocidolite. tremolite.
                                   b.   "Asbestos material" means asbestos
                                        or any material containing
                                        asbestos.
                                   c.   "Asbestos mill" means any facility
                                        engaged in the conversion or any
                                        intermediate step in the conversion
                                        of asbestos ore into commercial
                                        asbestos. Outside storage of
                                        asbestos materials is not
                                        considered a part of such facility.
                                   d.   "Asbestos tailings" means any solid
                                        waste product of asbestos mining or
                                        milling operations which contains
                                        asbestos.
                                   e.   "Commercial asbestos" means any
                                        variety of asbestos which is
                                        produced by extracting asbestos
                                        from asbestos ore.
                                   f.   "Demolition" means the wrecking or
                                        removal of any load-supporting
                                        structural member.
                                   g.   "Manufacturing" means the combining
                                        of commercial asbestos, or in the
                                        case of woven friction products the
                                        combining of textiles containing
                                        commercial asbestos, and the
                                        processing of this combination into
                                        a product as specified in paragraph
                                        c.
                                   h.   "Outside air" means the air outside
                                        buildings and structures; i.e.
                                        ambient air.
                                   i.   "Particulate asbestos material"
                                        means finely divided particles of
                                        asbestos material.
                                   j.   "Visible emissions" means any
                                        emissions which are visibly
                                        detectable without the aid of
                                        instruments and which contain
                                        particulate asbestos material.
                              2.   Emission Standard. A person shall not
                                   cause to be discharged into the
                                   atmosphere asbestos in the following
                                   amounts from the sources listed:
                                   a.   Asbestos mills: there shall be no
                                        visible emissions to the outside
                                        air from any asbestos mill except
                                        as provided in paragraph f.
                                   b.   Roadways: The surfacing of roadways
                                        with asbestos tailings is
                                        prohibited, except for temporary
                                        roadways on an area of asbestos ore
                                        deposits. The deposition of
                                        asbestos tailings on roadways
                                        covered with snow or ice is
                                        considered "surfacing".
                                   c.   Manufacturing: There shall be no
                                        visible emissions to outside air
                                        except as provided in paragraph f.
                                        of this rule, from any building or
                                        structure in which the operations
                                        are conducted or directly from any
                                        of the following operations if they
                                        are conducted outside of buildings
                                        or structures.
                                        (1)  The manufacture of cloth,
                                             cord, wicks, tubing, tape,
                                             twine, rope, thread, yarn,
                                             roving, lap or other textile
                                             materials.
                                        (2)  The manufacture of cement
                                             products.
                                        (3)  The manufacture of
                                             fireproofing and insulating
                                             materials.
                                        (4)  The manufacture of friction
                                             products.
                                        (5)  The manufacture of paper,
                                             millboard and felt.
                                        (6)  The manufacture of floor tile.
                                        (7)  The manufacture of paints,
                                             coatings, caulks, adhesives,
                                             sealants.
                                        (8)  The manufacture of plastics
                                             and rubber products.
                                        (9)  The manufacture of chlorine.
                                   d.   Demolition: Any owner or operator
                                        of a demolition operation who
                                        intends to demolish any
                                        institutional, commercial or
                                        industrial building (including
                                        apartment buildings having more
                                        than four dwelling units),
                                        structure, facility, installation,
                                        or portion thereof which contains
                                        any boiler, pipe or load-supporting
                                        structural member that is insulated
                                        or fireproofed with friable
                                        asbestos material shall comply with
                                        the requirements set forth in this
                                        paragraph.
                                        (1)  Written notice of intention to
                                             demolish shall be provided to
                                             the Control Officer at least
                                             10 days prior to commencement
                                             of demolition or anytime prior
                                             to commencement of such
                                             demolition subject to
                                             paragraph d(3) of this rule.
                                             Such notice shall include the
                                             following information:
                                             (a)  Name of owner or
                                                  operator.
                                             (b)  Address of owner or
                                                  operator.
                                             (c)  Description of the
                                                  building, structure,
                                                  facility or installation
                                                  to be demolished.
                                             (d)  Address or location of
                                                  the building, structure,
                                                  facility or installation.
                                             (e)  Scheduled starting and
                                                  completion dates of
                                                  demolition.
                                             (f)  Method of demolition to
                                                  be employed.
                                             (g)  Procedures to be employed
                                                  to meet the requirements
                                                  of this paragraph.
                                        (2)  The following procedures shall
                                             be used to prevent emissions
                                             of particulate asbestos
                                             material to the outside air:
                                             (a)  Friable asbestos
                                                  materials, used to
                                                  insulate or fireproof any
                                                  boiler, pipe or load-
                                                  supporting structural
                                                  member, shall be wetted
                                                  and removed from any
                                                  building, structure,
                                                  facility or installation
                                                  subject to this paragraph
                                                  before wrecking of load-
                                                  supporting structural
                                                  members is commenced.
                                                  Boilers, pipe or load-
                                                  supporting structural
                                                  members that are
                                                  insulated or fireproofed
                                                  with friable asbestos
                                                  materials may be removed
                                                  as units or in sections
                                                  without stripping or
                                                  wetting except that where
                                                  the boiler, pipe or load-
                                                  supporting structural
                                                  member is cut or
                                                  disjointed, the exposed
                                                  friable asbestos
                                                  materials shall be
                                                  wetted. Friable asbestos
                                                  debris shall be wetted
                                                  adequately to insure that
                                                  such debris remains wet
                                                  during all stages of
                                                  demolition and related
                                                  handling operations.
                                             (b)  No pipe or load-
                                                  supporting structural
                                                  member that is covered
                                                  with friable asbestos
                                                  insulating or
                                                  fireproofing material
                                                  shall be dropped or
                                                  thrown to the ground from
                                                  any building, structure,
                                                  facility or installation
                                                  subject to this
                                                  paragraph, but shall be
                                                  carefully lowered or
                                                  taken to ground level.
                                             (c)  No friable asbestos
                                                  debris shall be dropped
                                                  or thrown to the ground
                                                  from any building,
                                                  structure, facility or
                                                  installation subject to
                                                  this paragraph, or from
                                                  any floor to any floor
                                                  below. For buildings,
                                                  structures, facilities or
                                                  installations, 50 feet or
                                                  greater height, friable
                                                  asbestos debris shall be
                                                  transported to the ground
                                                  via dust-tight chutes or
                                                  containers.
                                        (3)  Any owner or operator of a
                                             demolition operation who
                                             intends to demolish a
                                             building, structure, facility
                                             or installation to which the
                                             provisions of this paragraph
                                             would be applicable but which
                                             has been declared by proper
                                             State or local authority to be
                                             structurally unsound and which
                                             is in danger of imminent
                                             collapse is exempt from the
                                             requirements of this paragraph
                                             other than the reporting
                                             requirements specified by
                                             paragraph d(2) of this rule.
                                   e.   Spraying: There shall be no visible
                                        emissions to the outside air from
                                        spray-on application of materials
                                        containing more than 1 percent
                                        asbestos, on a dry-weight basis,
                                        used to insulate or fireproof
                                        equipment and machinery, except as
                                        provided in paragraph f. of this
                                        rule. Spray-on materials used to
                                        insulate or fireproof buildings,
                                        structures, pipes and conduits
                                        shall contain less than 1 percent
                                        asbestos on a dry-weight basis.
                                        (1)  Any owner or operator who
                                             intends to spray asbestos
                                             materials to insulate or
                                             fireproof buildings,
                                             structures, pipes, conduits,
                                             equipment and machinery shall
                                             report such intention to the
                                             Control Officer at least 20
                                             days prior to the commencement
                                             of the spraying operation.
                                             Such report shall include the
                                             following information:
                                             (a)  Name of owner or
                                                  operator.
                                             (b)  Address of owner or
                                                  operator.
                                             (c)  Location of spraying
                                                  operation.
                                             (f)  Procedures to be followed
                                                  to meet the requirements
                                                  of this paragraph.
                                   f.   Rather than meet the no-visible
                                        emission requirements of paragraphs
                                        a., c., and e. of this rule, an
                                        owner or operator may elect to use
                                        the methods specified in paragraph
                                        h. to clean emissions containing
                                        particulate asbestos material
                                        before such emissions escape to, or
                                        are vented to, the outside air.
                                   g.   Where the presence of uncombined
                                        water is the sole reason to meet
                                        the no-visible-emission requirement
                                        of paragraph a., c., or e. of this
                                        section, such failure shall not be
                                        a violation of such emission
                                        requirements.
                                   h.   If air-cleaning is elected, as
                                        permitted by paragraph f., the
                                        requirements of this paragraph h.
                                        must be met:
                                        (1)  Fabric filter collection
                                             devices must be used, except
                                             as noted in subparagraphs (2)
                                             and (3) of this paragraph.
                                             Pressure drop across the
                                             fabric filter must not exceed
                                             4" water gauge except as
                                             provided in subparagraph (3)
                                             for filter types which are
                                             designed for equivalent
                                             filtering at higher pressure
                                             drops. The airflow
                                             permeability, as determined by
                                             ASTM method D737-69, must not
                                             exceed 30 ft3/min/ft2 for
                                             woven fabrics or 35
                                             ft3/min/ft2 for felted
                                             fabrics, except that 40
                                             ft3/min/ft2 for woven and
                                             ft3/min/ft2 for felted fabrics
                                             is allowed for filtering air
                                             from asbestos ore dryers. Each
                                             square yard of felted fabric
                                             must weigh at least 14 ounces
                                             and be at least one-sixteenth
                                             inch thick throughout.
                                             Synthetic fabrics must not
                                             contain fill yarn other than
                                             that which is spun.
                                        (2)  If the use of fabric filters
                                             creates a fire or explosion
                                             hazard, the Control Officer
                                             may authorize the use of wet
                                             collectors designed to operate
                                             with a unit contacting energy
                                             of at least 40 inches water
                                             gauge pressure.
                                        (3)  The Control Officer may
                                             authorize the use of filtering
                                             equipment other than that
                                             described in subparagraphs (1)
                                             and (2) of this paragraph if
                                             the owner or operator
                                             demonstrates to the
                                             satisfaction of the Control
                                             Officer that the filtering of
                                             particulate asbestos material
                                             is equivalent to that of the
                                             described equipment.
                                        (4)  All air cleaning equipment
                                             authorized by this rule must
                                             be properly installed, used,
                                             operated and maintained. By-
                                             pass devices may be used only
                                             during upset or emergency
                                             conditions and then only for
                                             so long as it takes to shut
                                             down the operation generating
                                             the particulate asbestos
                                             material.
                              3.   Reporting. the owner or operator of any
                                   existing source to which this rule is
                                   applicable shall, within 90 days after
                                   the effective date, provide the
                                   following information to the control
                                   officer:
                                   a.   A description of the emission
                                        control equipment used for each
                                        purpose.
                                   b.   If a fabric filter device is used
                                        to control emissions, the pressure
                                        drop across the fabric filter in
                                        inches water gauge.
                                        (1)  If the fabric filter device
                                             utilizes a woven fabric, the
                                             airflow permeability in
                                             ft3/min/ft2; and, if the
                                             fabric is synthetic, indicate
                                             whether the fill yarn is spun
                                             or not spun.
                                        (2)  If the fabric filter device
                                             utilizes a felted fabric, the
                                             density in oz/yd2, the minimum
                                             thickness in inches, and the
                                             airflow permeability in
                                             ft3/min/ft2.
                         B.   Emission Standard for Mercury
                              1.   Definitions
                                   a.   "Condenser stack gases" means the
                                        gaseous effluent evolved from the
                                        stack of processes utilizing heat
                                        to extract mercury metal from
                                        mercury ore.
                                   b.   "Mercury" means the element
                                        mercury, excluding any associated
                                        elements, and includes mercury in
                                        particulates, vapors, aerosols and
                                        compounds.
                                   c.   "Mercury ore" means a mineral mined
                                        specifically for its mercury
                                        content.
                              2.   Emission Standard. Emissions to the
                                   atmosphere from those stationary sources
                                   which process mercury ore to recover
                                   mercury shall not exceed 2,300 grams of
                                   mercury per 24-hour period.
                              3.   Testing
                                   a.   Mercury ore processing facility.
                                        (1)  Unless a waiver of emission
                                             testing is obtained each owner
                                             or operator processing mercury
                                             ore shall test emissions from
                                             his source:
                                             (a)  Within 90 days of the
                                                  effective date of this
                                                  rule.
                                             (b)  Within 90 days of start
                                                  up in the case of a new
                                                  source.
                                        (2)  The control officer shall be
                                             notified at least 30 days
                                             prior to an emission test, so
                                             that he may at his option
                                             observe the test.
                                        (3)  Samples shall be taken over
                                             such a period or periods as
                                             are necessary to accurately
                                             determine the maximum
                                             emissions which will occur in
                                             a 24-hour period. No changes
                                             in the operation shall be made
                                             which would potentially
                                             increase emissions above that
                                             determined by the most recent
                                             source test, until the new
                                             emission level has been
                                             established by calculation and
                                             the results reported to the
                                             control officer.
                                        (4)  All samples shall be analyzed,
                                             and mercury emission shall be
                                             determined within 30 days
                                             after the source test.