SDAPCD RULE X-OOO STDS.OF PERF.FOR NONMETTALC.MIN.PROC.PLTS.          
LAST REVISED 03/19/87

          
          SUBPART OOO  -  Standards of Performance for Nonmetallic Mineral
                          Processing Plants  (Delegation Effective 3/19/87)


                RULE 260.70.     APPLICABILITY AND DESIGNATION OF AFFECTED
                                 FACILITY

                (a)   Except as provided in Sections(b), (c), and (d) of this
           rule, the provisions of this subpart are applicable to the 
           following affected facilities in fixed or portable nonmetallic 
           mineral processing plants:  each crusher, grinding mill, screening 
           operation, bucket elevator, belt conveyor, bagging operation, 
           storage bin, enclosed truck or railcar loading station.

                (b)   An affected facility that is subject to the provisions 
           of Subpart I or that follows in the plant process any facility 
           subject to the provisions of Subpart I of this Regulation is not 
           subject to the provisions of this subpart.

                (c)   Facilities at the following plants are not subject to 
           the provisions of this subpart:

                      (1)  Fixed sand and gravel plants and crushed stone 
                plants with capacities, as defined in Rule 260.671, of 23 
                megagrams per hour (25 tons per hour) or less;

                      (2)  Portable sand and gravel plants and crushed stone
                plants with capacities, as defined in Rule 260.671, of 136
                megagrams per hour (150 tons per hour) or less; and

                      (3)  Common clay plants and pumice plants with 
                capacities, as defined in Rule 260.671, of 9 megagrams per 
                hour (10 tons per hour) or less.

                There are no lower capacity exemptions for plants that process 
           the nonmetallic minerals listed in Rule 260.671(o)(4) through 
           (o)(6) and (o)(8) through (o)(18).

                (d)   (1)  When an existing facility is replaced by a piece of
           equipment of equal or smaller size, as defined in Rule 260.671, 
           having the same function as the existing facility, the new facility 
           is exempt from the provisions of Rule 260.672, 260.674 and 260.675 
           except as provided for in Subsection (d)(3) of this section.

                      (2)  An owner or operator seeking to comply with this
                section shall comply with the reporting requirements of Rule
                260.676, Sections (a) and (b).

                      (3)  An owner or operator replacing all existing 
                facilities in a production line with new facilities does not 
                qualify for the exemption described in Subsection (d)(1) of 
                this section and must comply with the provisions of Rules 
                260.672, 260.674 and 260.675.

                      (4)  An affected facility under Section (a) of this rule
                that commences construction, reconstruction, or modification 
                after August 31, 1983 is subject to the requirements of this 
                rule.


                RULE 260.671.    DEFINITIONS

                All terms used in this subpart, but not specifically defined 
           in this rule shall have the meaning given them in the Act and in 
           Subpart A of this Regulation.

                (a)   "Bagging Operation" means mechanical process by which 
           bags are filled with nonmetallic minerals.

                (b)   "Belt Conveyor" means a conveying device that transports
           material from one location to another by means of an endless belt 
           that is carried on a series of idlers and routed around a pulley at 
           each end.

                (c)   "Bucket Elevator" means a conveying device of 
           nonmetallic minerals consisting of a head and foot assembly which 
           supports and drives an endless single or double strand chain or 
           belt to which buckets are attached.

                (d)   "Building" means any frame structure with a roof.

                (e)   "Capacity" means the cumulative rated capacity of all
           initial crushers that are part of the plant.

                (f)   "Capture System" means the equipment (including 
           enclosures, hoods, ducts, fans, dampers, etc) used to capture and 
           transport particulate matter generated by one or more process 
           operations to a control device.

                (g)   "Control Device" means the air pollution control 
           equipment used to reduce particulate matter emissions released to 
           the atmosphere from one or more process operations at a nonmetallic 
           mineral processing plant.

                (h)   "Conveying System" means a device for transporting 
           materials from one piece of equipment or location to another 
           location within a plant.  Conveying systems include but are not 
           limited to the following: feeders, belt conveyors, bucket elevators 
           and pneumatic systems.

                (i)   "Crusher" means a machine used to crush any nonmetallic
           minerals, and includes, but is not limited to, the following types:
           jaw, gyratory, cone, roll, rod mill, hammermill, and impactor.

                (j)   "Enclosed Truck or Railcar Loading Station" means that
           portion of a nonmetallic mineral processing plant where nonmetallic
           minerals are loaded by an enclosed conveying system into enclosed
           trucks or railcars.

                (k)   "Fixed Plant" means any nonmetallic mineral processing 
           plant at which the processing equipment specified in Rule 260.670
           (a) is attached by a cable, chain, turnbuckle, bolt or other means 
           (except electrical connections) to any anchor, slab, or structure 
           including bedrock.

                (l)   "Fugitive Emission" means particulate matter that is 
           not collected by a capture system and is released to the atmosphere 
           at the point of generation.

                (m)   "Grinding Mill" means a machine used for the wet or dry 
           fine crushing of any nonmetallic mineral.  Grinding mills include, 
           but are not limited to the following types:  hammer, roller, rod, 
           pebble and ball, and fluid energy.  The grinding mill includes the 
           air conveying system, air separator, or air classifier, where such 
           systems are used.

                (n)   "Initial Crusher" means any crusher into which 
           nonmetallic minerals can be fed without prior crushing in the 
           plant.

                (o)   "Nonmetallic Mineral" means any of the following 
           minerals or any mixture of which the majority is any of the 
           following minerals:

                      (1)  Crushed and Broken Stone, including Limestone,
                Dolomite, Granite, Traprock, Sandstone, Quartz, Quartzite, 
                Marl, Marble, Slate, Shale, Oil Shale, and Shell

                      (2)  Sand and Gravel

                      (3)  Clay including Kaolin, Fireclay, Bentonite, 
                Fuller's Earth, Ball Clay, and Common Clay

                      (4)  Rock Salt

                      (5)  Gypsum

                      (6)  Sodium Compounds, including Sodium Carbonate, 
                Sodium Chloride, and Sodium Sulfate

                      (7)  Pumice

                      (8)  Gilsonite

                      (9)  Talc and Pyrophyllite

                      (10) Boron, including Borax, Kernite, and Colemanite

                      (11) Barite

                      (12) Fluorospar
                      
                      (13) Feldspar

                      (14) Diatomite

                      (15) Perlite

                      (16) Vermiculite

                      (17) Mica

                      (18) Kyanite, including Andalusite, Sillimanite, Topaz, 
                           and Dumortierite

                (p)   "Nonmetallic Mineral Processing Plant" means any 
           combination of equipment that is used to crush or grind any 
           nonmetallic mineral wherever located, including lime plants, power 
           plants, steel mills, asphalt concrete plants, or any other facility 
           processing nonmetallic minerals except as provided in Rule 260.670
           (b) and (c).

                (q)   "Portable Plant" means any nonmetallic mineral 
           processing plant that is mounted on any chassis or skids and may be 
           moved by the application of a lifting or pulling force.  In 
           addition, there shall be no cable, chain, turnbuckle, bolt or other 
           means (except electrical connections) by which any piece of 
           equipment is attached or clamped to any anchor, slab, or structure, 
           including bedrock that must be removed prior to the application of 
           a lifting or pulling force for the purpose of transporting the 
           unit.

                (r)   "Production Line" means all affected facilities 
           (crushers, grinding mills, screening operations, bucket elevators, 
           belt conveyors, bagging operations, storage bins, and enclosed 
           truck and railcar loading stations) which are directly connected or 
           are connected together by a conveying system.

                (s)   "Screening Operation" means a device for separating 
           material according to size by passing undersize material through 
           one or more mesh surfaces (screens) in series, and retaining 
           oversize material on the mesh surfaces (screens).

                (t)   "Size" means the rated capacity in tns per hour of a
           crusher, grinding mill, bucket elevator, bagging operation, or 
           enclosed truck or railcar loading station; the total surface area 
           of the top screen of a screening operation; the width of a conveyor 
           belt; and the rated capacity in tons of a storage bin.

                (u)   "Stack Emission" means the particulate matter that is
           released to the atmosphere from a capture system.

                (v)   "Storage Bin" means a facility for storage (including 
           surge bins) of nonmetallic minerals prior to further processing or 
           loading.

                (w)   "Transfer Point" means a point in a conveying operation
           where the nonmetallic mineral is transferred to or from a belt 
           conveyor except where the nonmetallic mineral is being transferred 
           to a stockpile.

                (x)   "Truck Dumping" means the unloading of nonmetallic 
           minerals from movable vehicles designed to transport nonmetallic 
           minerals from one location to another.  Movable vehicles include 
           but are not limited to: trucks, front end loaders, skip hoists, and 
           railcars.

                (y)   "Vent" means an opening through which there is 
           mechanically induced air flow for the purpose of exhausting from a 
           building air carrying particulate matter emissions from one or 
           more affected facilities.


                RULE 260.672.    STANDARD FOR PARTICULATE MATTER

                (a)   On and after the date on which the performance test 
           required by Rule 260.8 of Subpart A is completed, no owner or 
           operator subject to the provisions of this subpart shall cause to 
           be discharged into the atmosphere from any transfer point on belt 
           conveyors or from any other affected facility any stack emissions 
           which:

                      (1)  Contain particulate matter in excess of 0.02 
                gr/dscf (0.05 g/dscm); or

                      (2)  Exhibit greater than 7 percent opacity, unless the
                stack emissions are discharged from an affected facility using 
                a wet scrubbing control device.  Facilities using a wet 
                scrubber must comply with the reporting provisions of Rule 
                260.676(c), (d), and (e).

                (b)   On and after the 60th day after achieving the maximum
           production rate at which the affected facility will be operated, 
           but not later than 180 days after initial startup, no owner or 
           operator subject to the provisions of this subpart shall cause to 
           be discharged into the atmosphere from any transfer point on belt 
           conveyors or from any other affected facility any fugitive 
           emissions which exhibit greater than 10 percent opacity, except as 
           provided in Sections (c), (d), and (e) of this rule.

                (c)   On and after the 60th day after achieving the maximum
           production rate at which the affected facility will be operated, 
           but not later than 180 days after initial startup, no owner or 
           operator shall cause to be discharged into the atmosphere from any 
           crusher, at which a capture system is not used, fugitive emissions 
           which exhibit greater than 15 percent opacity.

                (d)   Truck dumping of nonmetallic minerals into any screening
           operation, feed hopper, or crusher is exempt from the requirements 
           of this rule.

                (e)   If any transfer point on a conveyor belt or any other
           affected facility is enclosed in a building, then each enclosed
           affected facility must comply with the emission limits in Sections 
           (a), (b) and (c) of this rule, or the building enclosing the 
           affected facility or facilities must comply with the following 
           emission limits.

                      (1)  No owner or operator shall cause to be discharged 
                into the atmosphere from any building enclosing any transfer 
                point on a conveyor belt or any other affected facility any 
                visible fugitive emissions except emissions from a vent as 
                defined in Rule 260.671.

                      (2)  No owner or operator shall cause to be discharged 
                into the atmosphere from any vent of any building enclosing 
                any transfer point on a conveyor belt or any other affected 
                facility emissions which exceed the stack emissions limits in 
                Section (a) of this rule.


                RULE 260.673.    RECONSTRUCTION

                (a)   The cost of replacement of ore-contact surfaces on
           processing equipment shall not be considered in calculating either 
           the "fixed capital cost of the new components" or the "fixed 
           capital cost that would be required to construct a comparable new 
           facility" under Rule 260.15.  Ore-contact surfaces are crushing 
           surfaces; screen meshes, bars, and plates; conveyor belts; and 
           elevator buckets.

                (b)   Under Rule 260.15, the "fixed capital cost of the new
           components" includes the fixed capital cost of all depreciable
           components (except components specified in Section (a) of this 
           rule) which are or will be replaced pursuant to all continuous 
           programs of component replacement commenced within any 2-year 
           period following August 31, 1983.


                RULE 260.674.    MONITORING OF OPERATIONS

                The owner or operator of any affected facility subject to the
           provisions of this subpart which uses a wet scrubber to  control
           emissions shall install, calibrate, maintain and operate the 
           following monitoring devices:

                (a)   A device for the continuous measurement of the pressure 
           loss of the gas stream through the scrubber.  The monitoring device 
           must be certified by the manufacturer to be accurate within 250 
           pascals (1 inch water gauge pressure) and must be calibrated on an 
           annual basis in accordance with manufacturer's instructions.

                (b)   Devices for the continuous measurements of the scrubbing
           liquid flow rate and supply pressure to the wet scrubber.  The
           monitoring devices must be certified by the manufacturer to be 
           accurate within 5 percent of design scrubbing liquid flow rte or 
           supply pressure, depending on use, and must be calibrated on an 
           annual basis in accordance with manufacturer's instructions.



                RULE 260.675.    TEST METHODS AND PROCEDURES

                Performance tests shall be conducted as specified in Part 60,
           Chapter I, Title 40, Code of Federal Regulations, Section 60.675.


                RULE 260.676.    REPORTING AND RECORDKEEPING

                (a)   Each owner or operator seeking to comply with Rule
           260.670(d) shall submit to the Control Officer the following
           information about the existing facility being replaced and the
           replacement piece of equipment.

                      (1)  For a crusher, grinding mill, bucket elevator, 
                bagging operation, or enclosed truck or railcar loading 
                station:

                           (i)   The rated capacity in tons per hour of the
                      existing facility being replaced, and

                           (ii)  The rated capacity in tons per hour of the
                      replacement equipment.

                      (2)  For a screening operation:

                           (i)   The total surface area of the top screen of 
                      the existing screening operation being replaced, and

                           (ii)  The total surface area of the top screen of 
                      the replacement screening operation.

                      (3)  For a conveyor belt:

                           (i)   The width of the existing belt being 
                      replaced, and

                           (ii)  The width of the replacement conveyor belt.

                      (4)  For a storage bin:

                           (i)   The rated capacity in tons of the existing
                      storage bin being replaced, and

                           (ii)  the rated capacity in tons of replacement 
                      storage bins.

                (b)   Each owner or operator seeking to comply with Rule
           260.670(d) shall submit the following data to the Control Officer:

                      (1)  The information described in Rule 260.676(a),

                      (2)  A description of the control device used to reduce
                particulate matter emissions from the existing facility and a 
                list of all other pieces of equipment controlled by the same 
                control devices, and

                      (3)  The estimated age of the existing facility.

                (c)   During the initial performance test of a wet scrubber, 
           and daily thereafter, the owner or operator shall record the 
           measurements of the change in pressure of the gas stream across the 
           scrubber, the scrubbing liquid flow rate, and the scrubber liquid 
           supply pressure.

                (d)   After the initial performance test of a wet scrubber, 
           the owner or operator shall submit semiannual reports to the 
           Control Officer of occurrences when the measurements of the 
           scrubber pressure loss (or gain), liquid flow rate, or liquid 
           supply pressure differ by more than 30 percent from those 
           measurements recorded during the most recent performance test.