EXHIBIT 2

Revised 9/3/81 1-1 

### AIR POLLUTION CO NTROL REGULATIONS

SECTION 1 - DEFINITIONS

1.0 In these Regula tions, unless the cont ext otherwis e requires:

1.2 "Affected Facility" means, with reference to a stationary source, any apparatus to which a standard is applicable.

1.4 "Air Contaminant" means, any substance discharged into the atmosphere except water vapor or water droplets.

1.7 "Air Pollution Control Committee" means, three (3) members selected
from the District Boa rd of Health of Clark County to perform the
functions set forth in thes e Regulations.

1.12 "Area Source" means, a collecti on of minor sour ces each emitting
less than 22.7 metric tons (25 tons) per year of any pollutant for which
there is a standard.

1.13 "Atmosphere" means, the portion of air which envelops the earth
that is not cont ained in any enclosed bu ilding or structure.

1.19 "Board" means, the District Board of Health of Clark County.

1.31 "Dust" means, minute solid particles released in to the atmosphere by natural forces or by mechanical or chemical processes.

1.34 "Existing Facility" means, any sing le source of contaminant onEXHIBIT 2

Revised 9/3/81 1-2 which construction or mo dification was begun pr ior to Augu st 25, 1971.

1.35 "Existing Gaso line Station" means, a place ca pable of receiving, storing, and dispensing one or more grad es of gasoline for use in motor
vehicles and for which construction commenced prior to November 1,

1977.

1.36 "Fixed Capital Cost" means, the capi tal needed to provide all the depreciable components.

1.42 "Fumes" means, minute solid pa rticles generated by the condensation of vapors fr om solid matter after volatilizati on from the molten state, or may be generated by sublimation, distillation, calcination, or chemical reaction, when these processes create airborne particles.

1.46 "Health District" means, the Clark Coun ty Health District.

1.47 "Hearing Board" means, seven (7) members appointed by the Board of Health to perform t he function set forth in the Nevada Revised
Statutes and th ese Regulations.

l.50 "Integrated Sampling" means, sampling for an average concentration during an arbitrary time period. It generally involves
collection of the sample in the field followed by analysis of the sample in the laboratory.

1.56 "Minor Source" means, a source of air contaminants in which the potential to emit f or each and every contam inant is less than the significant em ission rate.

1.57 "Mist" means, liquid partic ulates or droplets , about the size of raindrops, such as fog, that are formed by conden sation or vapor, or atomization of a liquid by mechanical spraying.

1.63 "New Gasoline Station" means, a place ca pable of receiving, storing and dispensing o ne or more grades of gaso line for use in motor
vehicles and for which co nstruction commenced on or after November 1,

1977.

1.64 "New Source" means, any stationary sou rce of air contaminant on
which constructi on or reco nstruction ha s begun after August
25, 1971.EXHIBIT 2

Revised 9/3/81 1-3 1.66 "NIC" means, Nevada Indu strial Commission.

1.78 "Point Source" means, any source that emits in excess of 22.7 metric tons (25 to ns) per year of an y air cont aminant.

1.87 "Shutdown" means, the cessa tion of operation of any affected facility for any purpose.

1.88 "Significant" means, in reference to a net emissions increase or the potential of a source to emit any of the following po llutants, a

rate of emissions that would equal or exceed any of the following rates:

Pollutant and Em issions Rate

Carbon monoxide - 25 tons per year (TPY) Nitrogen oxides - 40 TPY
Sulfur dioxide - 40 TPY
Particulate ma tter - 5 TPY Volatile organic co mpounds - 40 TPY
Lead - 0.2 TPY
Asbestos - 0.007 TPY Beryllium - 0.0004 TPY Mercury - 0.1 TPY Vinyl chloride - 1 TPY
Fluoride - 3 TPY
Sulfuric acid mist - 7 TPY Hydrogen sulfide (H 2 S) - 10 TPY
Total reduced sulf ur (including H 2 S) - 10 TPY Reduced sulfur comp ounds (inc luding H 2 S) - 10 TPY
Total chloride - 10 TPY

1.89 "Significant Source of Total Chlorides" means, a process or process equipment

a) which emits more than 10 pounds per hour fr om a stack or stacks,

or

b)which has fugi tive emissions of more than 25 pounds per hour from a single building or other distinct fugi tive source.

More than one significant source of total chlori de may exist under the same management, cont rol or ownership.EXHIBIT 2

Revised 9/3/81 1-4 1.91 "Single Source" means, all simi lar process operat ions located at a single contiguous pr operty which can techni cally be replaced by a single process that perf orms the same function.

1.93 "Smoke" means, the produc t of incomplete combustion consisting chiefly of particles of unburned carbon.

1.94 "Source of Air Contaminant" means, anything wh ich emits any air
contaminant.

1.95 "Special Mobi le Equipment" means, every vehi cle not designed or used primarily for the transportation of persons or pr operty and only incidentally operated or moved upon a paved ro adway. Special mobile equipment may include but is not limi ted to grader s, scrapers, bulldozers and other co nstruction equipment.

1.97 "Standard Commer cial Equipment" means, equipment manufactured in quantity for th e purpose inte nded and comp letely specified as to the size, type and ratings in catalogs, and othe r printed li terature readily availabl e locally to officials within Clark County.

1.98 "Standard Conditions" means, a tempe rature of 20 o Celcius (68 o F) and a pressure of 760 mm of merc ury (29.92 inches of mercury).

1.99 "Start Up" means, the setting in operat ion of an affect ed facility for any purpose.

1.100 "Stationary Source" means, any building, stru cture, facility, or
installation which emits or may emit any air contaminant subject to regulations contai ned herein. A stationary source is comp osed of one

or more emission units, is located on one or more contiguous or adjacent properties, and is under control of the same person (or persons under common control). Examples of emis sion units are:

Stacks;
Vents;

Process areas releasing air contaminants; Unpa ved haul roads serving a gr avel processing operation; Air poll ution control equipment;

Ev aporation towers;

St orage tanks; and

St ationary engines.

Emissio n units do not include mo tor vehicle emissions.

1.101 "Stop Order" means, a written notice by the Control Officer served

on a person or persons engaged in the doing or causing the construction,EXHIBIT 2

Revised 9/3/81 1-5 installation or al teration, or work to be stopped.

1.105 "Uncombined Water" means, a visible mi st of condensed water

vapor.

1.108 "Vapor Dispos al System" means, a device or combination of devices into which vapors are p assed before being vented into the atmosphere.