U.S. DEPARTMENT OF COMMERCE
                                   National Technical Information Service

                                   PB-290 261
Air Pollution  Regulations  in  State
Implementation Plans:  Idaho
Abcor Inc, Wilmington, MA  Walden Div
Prepared for

Environmental Protection Agency, Research Triangle Park, NC


Aug 78

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                            PB  290261
United States
Environmental Protection
Agency
Office of Air Quality
Planning and Standards
Research Triangle Park NC 27711
EPA-450/3-78-062
August 1978
Air
Air  Pollution Regulations
in State  Implementation
Plans:
Idaho
         REPRODUCED BY

        NATIONAL TECHNICAL

        INFORMATION SERVICE
         U. S. DEPARTMENT OF COMMERCE
          SPRINGFIELD. VA. 22161

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                                  TECHNICAL REPORT DATA
                           (Please read Instructions on the reverse before completing)
1. REPORT NO.
  EPA-450/3-78-062
                                                          3. RECIPIENT'S ACCESSION-NO
4. TITLE AND SUBTITLE
 Air Pollution Regulations  in State Implementation  i
 Plans:Idaho
             5. REPORT DATE
              August 1978
             6. PERFORMING ORGANIZATION CODE
                P5  J
7. AUTHOR(S)
                                                           8. PERFORMING ORGANIZATION REPORT NO.
9. PERFORMING ORGANIZATION NAME AND ADDRESS
  Walden Division of Abcor,  Inc.
  Wilmington, Mass.
                                                           10. PROGRAM ELEMENT NO.
             11. CONTRACT/GRANT NO.


               68-02-2890
12. SPONSORING AGENCY NAME AND ADDRESS
                                                           13. TYPE OF REPORT AND PERIOD COVERED
  Control  Programs Development Division
  Office of Air Quality  Planning and Standards
  Office of Air, Noise,  and  Radiation
  Research Triangle Park,  NC 27711	
             14. SPONSORING AGENCY CODE
15. SUPPLEMENTARY NOTES
  EPA Project Officer:   Bob  Schell, Control Programs  Development Division
16. ABSTRACT
  This document has been  produced in compliance with  Section 110(h)(l) of the  Clean  Air
  Act amendments of 1977.   The Federally enforceable  regulations contained in  the  State
  Implementation Plans  (SIPs)  have been compiled for  all  56 States and territories
  (with the exception of  the Northern Mariana  Islands).   They consist of both  the
  Federally approved State  and/or local air quality regulations as indicated in  the
  Federal Register and  the  Federally promulgated regulations for the State, as
  indicated in the Federal  Register. Regulations which  fall into one of the above
  categories as of January  1,1978, have been  incorporated.  As mandated by Congress,
  this document will be updated annually.  State and/or local air quality regulations
  which have not been Federally approved as of January  1, 1978, are not included here;
  omission of these regulations from this document in no way affects the ability of
  the respective Federal, State, or local agencies to enforce such regulations.
17.
                                KEY WORDS AND DOCUMENT ANALYSIS
                  DESCRIPTORS
                                              b.lDENTIFIERS/OPEN ENDED TERMS  C.  COSATI Field/Group
  Air pollution
  Federal Regulations
  Pollution
  State Implementation  Plans
13. DISTRIBUTION STATEMENT

  RELEASE UNLIMITED
19. SECURITY CLASS (ThisReport)
   Unclassified	
                                              20. SECURITY CLASS (This page)

                                                 Unclassified
                                                                         22. PRICED
                            A
                                         r
EPA Form 2220-1 (9-73)

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                                   EPA-450/3-78-062
    Air Pollution Regulations
in  State Implementation  Plans
                   Idaho
                        by

                 Walden Division of Abcor, Inc.
                 Wilmington, Massachusetts
                  Contract No. 68-02-2890
                 EPA Project Officer: Bob Schell
                     Prepared for

             U.S. ENVIRONMENTAL PROTECTION AGENCY
                Office of Air, Noise, and Radiation
             Office of Air Quality Planning and Standards
             Research Triangle Park, North Carolina 27711

                     August 1978

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This report is issued by the Environmental Protection Agency to
report air pollution regulations of interest to a limited number of
readers.  Copies are available, for a fee, from the National Technical
Information Service, 5285 Port Royal Road, Springfield, VA 22161.
This report was furnished to the Environmental Protection Agency by
Walden Division of Abcor, Inc., Wilmington, Mass. 01887, in fulfillment
of Contract No. 68-02-2890.  The contents of this report are reproduced
herein as received from Walden Division of Abcor,  Inc.  The opinions,
findings, and conclusions expressed are those of the author  and not
necessarily those of the Environmental Protection Agency. Mention of
company or product names is not to be considered as an endorsement
by the Environmental Protection Agency.
                   Publication No. EPA-450/3-78-062
                                  11

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                             INTRODUCTION
     This document has been produced in compliance with Section 110(h)(1)
of the Clean Air Act Amendments of 1977.  The Federally enforceable
regulations contained in the State Implementation Plans (SIPs) have been •
compiled for all 56 States and territories (with the exception of the
Northern Mariana Islands).  They consist of both the Federally approved
State and/or local air quality regulations as indicated in the Federal
Register and the Federally promulgated regulations for the State, as
indicated in the Federal Register.  Regulations which fall into one of
the above categories as of January 1, 1978, have been incorporated.  As
mandated by Congress, this document will be updated annually.   State
and/or local air quality regulations which have not been Federally
approved as of January 1, 1978, are not included here; omission of these
regulations from this document in no way affects the ability of the
respective Federal, State, or local agencies to enforce such regulations.

     There have been recent changes in the Federal enforceability of
parking management regulations and indirect source regulations.  The
October, 1977, appropriation bill for EPA prohibited Federal enforcement
of parking management regulations in the absence of specific Federal
authorizing legislation.  Federally promulgated parking management
regulations have, therefore, been suspended indefinitely.  Pursuant to
the 1S77 Clean Air Act Amendments, indirect source regulations may not
be required for the approval of a given SIP.  Consequently, any State
adopted indirect source regulations may be suspended or revoked; State
adopted indirect source regulations contained in an applicable SIP
are Federally enforceable.  More importantly, EPA may only promulgate
indirect source review regulations which are specific to Federally
funded, operated, or owned facilities or projects.  Therefore, the
Federally promulgated indirect source regulations appearing in this
document are not enforceable by EPA except as they relate to Federal
facilities.

     Since State air quality regulations vary widely in their organization,
content, and language, a standardized subject index is utilized in this
document.  Index listings consist of both contaminant and activity oriented
categories to facilitate usage.  For example, for regulations which apply
to copper smelters, one might look under sulfur compounds (50.2), particu-
late matter process weight (50.1.1), or copper smelters (51.15).  Federal
regulations pertaining to a given State immediately follow the approved
State and local regulations.

     Additionally, a summary sheet of the information included in each
comprehensive document is presented prior to the regulatory text to
allow one to quickly assess the contents of the document.  Specifically,
the summary sheets contain the date of submittal to EPA of each revision
                                    in

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to the SIP and the date of the Federal Register in which the revision
was either approved or disapproved by EPA.  Finally, a brief description
or reference of the regulation which was submitted is also included.

     This document is not intended to provide a tool for determining
the enforceability of any given regulation.  As stated above, it is
intended to provide a comprehensive compilation of those regulations
which are incorporated directly or by reference into Title 40, Part 52,
of the Code of Federal Regulations.  Consequently, the exclusion of a
Federally approved regulation from this document does not diminish the
enforceability of the regulation.  Similarly, the inclusion of a given
regulation (for example, regulations governing pollutants, such as odors,
for which there is no national ambient air quality standards) in this
document does not, in itself, render the regulation enforceable.
                                   IV

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                           SUMMARY  SHEET
Submittal  Date
    6/9/72
   2/15/73
    7/1/74
   1/10/75

   1/10/75
   1/24/75
   7/28/75
Section Number
   52.675

   52.676

   52.677
   52.683
              OF
EPA-APPROVED REGULATION CHANGES
             IDAHO
        Approval Date
           7/27/72
           5/14/73
           1/30/75
            8/7/75

          11/19/75
            8/7/75
           11/4/75

     FEDERAL REGULATIONS
        Description
        Control  Strategy:   Sulfur oxides—Eastern  Idaho
        Intrastate Air Quality Region
        Control  Strategy:   Sulfur oxides—Eastern
        Washington/Northern  Idaho Interstate Region
        Compliance Schedules
        Prevention of Significant Deterioration
Description
Reg. A, B, C, F
Entire Regs.
Reg. A, T
Reg. C, S
Note: S not acted on yet
Reg. S
Reg. A
Reg. T
                                 v

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                         DOCUMENTATION  OF CURRENT EPA-APPROVED
                            STATE  AIR POLLUTION REGULATIONS
                            REVISED STANDARD SUBJECT INDEX
 1.0    DEFINITIONS
 2.0    GENERAL  PROVISIONS AND ADMINISTRATIVE PROCEDURES
 3.0    REGISTRATION  CERTIFICATES,  OPERATING PERMITS AND APPLICATIONS
 4.0    AIR QUALITY STANDARDS (PRIMARY AND SECONDARY)
       4.1    PARTICULATES
       4.2   SULFUR  DIOXIDE
       4.3   NITRIC  OXIDES
       4.4   HYDROCARBONS
       4.5   CARBON  MONOXIDE
       4.6   OXIDANTS
       4.7   OTHERS
 5.0    VARIANCES
 6.0    COMPLIANCE SCHEDULES
 7.0    EQUIPMENT MALFUNCTION AND MAINTENANCE
 8.0    EMERGENCY EPISODES
 9.0    AIR QUALITY  SURVEILLANCE AND SOURCE TESTING
10.0    NEW SOURCE PERFORMANCE STANDARDS
11.0    NATIONAL EMISSIONS STANDARDS FOR HAZARDOUS AIR POLLUTANTS
12.0    MOTOR VEHICLE EMISSIONS AND CONTROLS
13.0    RECORD KEEPING AND REPORTING
14.0    PUBLIC AVAILABILITY OF DATA
15.0    LEGAL AUTHORITY AND ENFORCEMENT
16.0    HEARINGS, COMPLAINTS, AND INVESTIGATIONS
17.0    PREVENTION OF SIGNIFICANT DETERIORATION
18.0    AIR QUALITY  MAINTENANCE AREA
19.0  - 49.0
       RESERVED FOR FUTURE EXPANSION OF COMMON INDEX
50.0    POLLUTANT -  SPECIFIC REGULATIONS
       50.1  PARTICULATES
             50.1.1   PROCESS WEIGHT
             50.1.2  VISIBLE EMISSIONS
             50.1.3  GENERAL
                                           VI

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       50.2   SULFUR COMPOUNDS
       50.3   NITRIC OXIDES
       50.4   HYDROCARBONS
       50.5   CARBON MONOXIDE
       50.6   ODOROUS POLLUTANTS
       50.7   OTHERS (Pb, Hg, etc.)
51.0   SOURCE CATEGORY SPECIFIC REGULATIONS
       51.1   AGRICULTURAL PROCESSES (includes Grain Handling, Orchard Heaters,
              Rice and Soybean Facilities, Related Topics)
       51.2   COAL OPERATIONS (includes Cleaning, Preparation, Coal Refuse
              Disposal Areas, Coke Ovens, Charcoal Kilns, Related Topics)
       51.3   CONSTRUCTION (includes Cement Plants, Materials Handling, Topics
              Related to Construction Industry)
       51.4   FERROUS FOUNDRIES (includes Blast Furnaces, Related Topics)
       51.5   FUEL BURNING EQUIPMENT (coal, natural gas, oil) - Particulates
              (includes Fuel  Content and Other Related Topics)
       51.6   FUEL BURNING EQUIPMENT (coal, natural gas, oil) - S02 (includes
              Fuel Content and Other Related Topics)
       51.7   FUEL BURNING EQUIPMENT (oil, natural gas, coal) - N02 (includes
              Fuel Content and Other Related Topics)
       51.8   HOT MIX ASPHALT PLANTS
       51.9   INCINERATION
       51.10  NITRIC ACID PLANTS
       51.11  NON-FERROUS SMELTERS (Zn, Cu, etc.) - Sulfur Dioxide
       51.12  NUCLEAR ENERGY FACILITIES (includes Related Topic)
       51.13  OPEN BURNING (includes Forest Management, Forest Fire, Fire
              Fighting Practice, Agricultural Burning and Related Topics)
       51.14  PAPER PULP; WOOD PULP AND KRAFT MILLS (includes Related Topics)
       51.15  PETROLEUM REFINERIES
       51.16  PETROLEUM STORAGE (includes Loading, Unloading, Handling and
              Related Topics)
       51.17  SECONDARY METAL OPERATIONS  (includes Aluminum, Steel and Related
              Topics)
       51.18  SULFURIC ACID PLANTS
       51.19  SULFURIC RECOVERY OPERATIONS
       51.20  WOOD WASTE BURNERS
       51.21  MISCELLANEOUS TOPICS
                                          VII

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                                  TABLE  OF CONTENTS
Revised Standard
  Subject Index
       (2.0)

       (1.0)
       (3.0)

       (3.0)

      (13.0)
       (7.0)
       (5.0)
       (2.0)
       (2.0)
       (9.0)

       (2.0)
       (2.0)

       (2.0)
      (14.0)
       (2.0)
       (3.0)
STATE REGULATIONS
Regulation-Section
Number
A. General Provisions -
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Section 7
Section 8
Section 9
Section 10
Section 11
B. Air Pollution Emer-
gency Regulation -
Section 1
Section 2
Section 3
Section 4
Section 5
Title
. Introduction
Definitions
Registration and Permit
Procedures For Stationary
Sources
Permit Procedures For
Indirect Sources
Reporting
Scheduled Maintenance
Variances
Circumvention
Total Compliance
Sampling and Analytical
Procedures
Provisions Governing
Specific Activities
Purpose
Episode Criteria
Public Notification
General Rules
Specific Emergency Episode
P_a_fl
1
1
9
11
14
15
15
17
18
18
13
19
19
20
20

                                                Abatement Plans  For Point
                                                Sources
24
                                           VIII

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Revised Standard
Regulation-Section
Subject Index
(2.0)
(2.0)
(4.1)
(4.2)
(4.6)
(4.4)
(4.3)
(4.5)
(4.1)
(4.7)
(4.7)
(4.7)
(51.13)
(2.0)
(51.13)
Number
C. Ambient Air Quality
Standards - Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Section 7
Section 8
Section 9
Section 10
Section 11
Section 12
D. Regulation For Control
of Open Burning -
Section 1
Section 2
Section 3
       (2.0)
       (50.1.2)

        (9.0)
        (2.0)
E. Regulation For Control
   of Smoke and Other
   Visible Emissions -
   Section 1
   Section 2
   Section 4
   Section 5
     Title                  Page

Purpose                      25
General                      25
Particulate Matter           25
Sulfur Oxides                26
Photochemical Oxidants       26
Hydrocarbons                 26
Nitrogen Dioxide             28
Carbon Monoxide              28
Setteable Particulate        28
Sulfuric Acid Mist           28
Fluorides                    28
Beryllium                    29

Introduction                 30
General Restrictions         30
Categories of Allowable
Burning                      30


Purpose                      33
Standard For Existing
Sources                      33
Point of Measurement         33
Exception                    34
                                            IX

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Revised Standard
  Subject Index

       (2.0)
      (50.1)

       (2.0)
Regulati on-Sectlon
      (51.5)

       (2.0)

       (2.0)




      (50.1)

       (2.0)



      (50.2)

      (50.2)

      (50.2)

      (50.2)

       (2.0)



      (50.7)

       (2.0)


      (50.6)
F.

G.


H.

I.




J.

K.

Number
Regulation For Control
of Fugitive Dust -
Section 1
Section 2
Regulation For Control
of Parti oil ate Emis-
sions From Fuel
Burning Equipment -
Section 1
Section 2
Section 3
Regulation For Control
of Parti cul ate Emis-
sions From Industrial
Process - Section 1
Section 2
Regulation For Sulfur
Content of Fuels -
Section 1
Section 2
Section 3
Section 4
Section 5
Regulation For Control
of Fluoride Emissions -
Section 1
Section 2
Regulation For Control
of Odors - Section 1
Section 2
Title
Purpose
General Rules
Purpose
General Rules
Exceptions
Purpose
Emission Limitations
Purpose
Sulfur Content in Fuels
Residual Fuel Oils
Distillate Fuel Oil
Coal
Purpose
General Rules
Purpose
General Rules
Pagi
35
36
36
36
37
39
39
41
41
41
41
42
43
43
44
44

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Revised Standard
  Subject Index
       (2.0)
      (51.9)
       (2.0)
       (2.0)

      (12.0)
       (2.0)

      (51.8)
       (2.0)

       (2.0)
     (51.14)
 (9.0)03.0)
       (2.0)
       (2.0)
       (2.0)

     (51.20)
       (2.0)
       (2.0)
       (2.0)
Regulation-Section
      Number
L.  Regulation For Control
   of Incinerators -
   Section 1
   Section 2
   Section 3
M.  Regulation For Control
   of Motor Vehicle Emis-
   sions - Section 1
   Section 2
N.  Regulation For Control
   of Hot-Mix Asphalt
   Plants - Section 1
   Section 2
0.  Regulation For Control
   of Kraft Pulping Mills
   Section 1
   Section 2
   Section 3
   Section 4
   Section 5
   Section 6
P.  Regulation For Control
   of Wigwam Burners -
   Section 1
   Section 2
   Section 3
   Section 4
Q.  Regulation For Control
   of Rendering Plants -
   Section 1
      Title                 Page

Purpose                      45
General Rules                45
Exceptions                   45

Purpose                      46
General Rules                46

Purpose                      47
General Rules                47

Purpose                      49
Statement of Policy          49
General Rules                49
Monitoring and Reporting     50
Special Studies              51
Exceptions                   52

Purpose                      53
General Restrictions         53
Design Criteria              53
Exceptions                   54

Purpose                      55
                                            XI

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Revised Standard
  Subject Index

     (51.21)

       (2.0)

       (2.0)
Regulation-Section
      Number

   Section 2

   Section 3

S.  Regulation For Control
   of Sulfur Oxide Emis-
   sions From Combined
   Zinc/Lead Smelter
      Title

General Restrictions

Exceptions
Page

 55

 55

(51.11)
(51.11)
(51.11)
(1.0)
(2.0)
(3.0)'
Operations - Section 1
Section 2
Section 3
Section 4
T. Air Pollution Source
. Permits - Section 1
Section 2
Section 3
Purpose
Control of Fugitive Sulfur
Dioxide Emissions
Permanent Control of
Sulfur Dioxide Emissions
Alternate Control of
Sulfur Dioxide Emission
Definitions
Purpose
Procedure For Issuing
56
56
57
60
72
72

                                                 Permit
                                                        72
                            FEDERALLY PROMULGATED REGULATIONS
Revised Standard
  Subject Index

      (50.2)
      (50.2)




       (6.0)

      (17.0)
Section Number

   52.675




   52.676




   52.677

   52.683
      Title
Page
Control Strategy:  Sulfur
Oxides — Eastern Idaho
Intrastate Air Quality
Control Region               76

Control Strategy:  Sulfur
Oxides — Eastern Washing-
ton - Northern Idaho Inter-
state Region                 81

Compliance Schedules         92

Prevention of Significant
Deterioration                93
                                           XII

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         A.   GENERAL  PROVISIONS

         SECTION  1

(2.0)         INTRODUCTION
             On  April  30,  1971,  the U. S. Environmental Protection Agency (EPA)
             adopted certain  national  primary and  secondary ambient air  quality
             standards (Federal  Register Vol. 36,  No. 87) under authority of Section
             109 of the Clean Air Act, as amended  (Public Law 91-604; 84 Stat.  1676).
             Under Section 110 of this Federal  law, each state is required to adopt
             and submit to the Administrator of EPA a plan which provides for the
             implementation,  maintenance, and enforcement of national ambient air
             quality standards within  each  air  quality control region (or portion
             thereof)  within  the state.

             It  is the intent of these rules and regulations to comply with the
             federal law and  to  eliminate,  or abate, air pollution in conformance
             with the  1972 Idaho Session Laws,  Chapter 347, Section 5 (1).  These
             regulations are  adopted  in accordance with the Administrative Procedure
             Act, Title 67, Chapter 52, Idaho Code.

             These rules and  regulations may be modified from time to time, as
             additional information on air  contaminants, sources of air pollution
             and ambient air  quality  levels are developed and evaluated.
         SECTION 2

(1.0)         DEFINITIONS
             A.     Act means  the  Idaho Air  Pollution Control Act as amended.
                   TTdaho  Code  Title  39,  Chapter  29)

             B.     Air Contaminant means  dust,  fume, gas, mist, odor, smoke, vapor,
                   pollen, soot,  carbon or  particulate matter or any combination
                   thereof.

             C.     Air Pollution  means the  presence in the outdoor atmosphere of
                   any contaminant or combination thereof in such quantity of such
                   nature  and duration and  under  such conditions as would be injurious
                   to human health and welfare, to animal or plant life, or to
                   property,  or to interfere  unreasonably with the enjoyment of life
                   or property.

             D.     Air Quality  means  the  specific measurement in the ambient air
                   of a particular air contaminant at any given time.

             E.     Air Quality  Criterion  means  the information used as guidelines
                   for decisions  when establishing air quality goals and air quality
                   standards.

             F.     Ambient Air  means  the  surrounding or outside air.
                                               -1-

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G.    Area Source means any small residential, governmental, institu-
      tional, commercial, or industrial fuel combustion operations;
      onsite waste disposal facility; motor vehicles, aircraft, vessels,
      or other transportation facilities; or other miscellaneous sources.

H.    ASTM means the American Society for Testing and Materials.

I.    BTU means British Thermal  Unit.

J.    Certificate of Registration means a certificate presented to a new
      or modified source certifying that the source has registered as
      provided by State law.

K.    Collection Efficiency means the overall  performance of the air
      cleaning device in terms of ratio of materials collected to total
      input to the collector unless specific size fractions of the
      contaminant are stated or required.

L.    Commission means the Idaho Air Pollution Control  Commission created
      by the Air Pollution Control Act (Idaho  Code Title 39, Chapter 29)
      or the Commission Staff or the Air Pollution Control  System.

M.    Control Equipment means any method, process or equipment which re-
      moves, reduces or renders less noxious,  air contaminants dis-
      charged into the atmosphere.

N.    Controlled Emission means an emission which has been  treated by
      control equipment to remove all or part  of an air contaminant before
      release to the atmosphere.

0.    Settleable Parti oil ate is particulate matter which is emitted into
      the atmosphere such that it may deposit  onto horizontal  surfaces
      due to gravitational settling.

P.    Emission means the act of releasing or discharging air pollutants
      into the ambient air from any source.

Q.    Emission Standard means a limitation on  the release of an air con-
      taminant to the ambient air.

R.    Equivalent Air-Dried Kraft Pulp means pulp production which pro-
      duces a loading of black liquor solids to the recovery furnace
      equivalent to that loading produced with kraft pulp.

S.    Existing Source means any air contamination source that exists, is
      installed, or is under construction on the adopted date of theso
      regulations.

T.    Fuel-Burning Equipment means any furnace, boiler, apparatus,
      stack, and all appurtenances thereto, used in the process of burn-
      ing fuel for the primary purpose of producing heat or power by
      indirect heat transfer.
                                  -2-

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U.    Fugitive Dust means solid, airborne participate matter emitted
      from any source other than through a stack.

V.    Hot-Mix Asphalt Plant means those firms conveying proportioned
      quantities or batch loading of cold aggregate to a drier,  and
      heating, drying, screening classifying, measuring and mixing
      the aggregate and asphalt for the purposes of paving, construct-
      ion, industrial, residential or commercial use.

W.    Incinerator means any source consisting of a furnace and all
      appurtenances thereto designed for the destruction of refuse
      by burning.  "Open Burning" is not considered incineration.
      For purposes of these rules, the destruction of any combustible
      liquid or gaseous material by burning in a flare stack shall be
      considered incineration.

X.    Industrial Process means any step in a manufacturing operation
      which results in the emission of particulate matter to the
      atmosphere.

Y.    Kraft Pulping means any pulping process which uses, for cooking
      liquor, an alkaline sulfide solution containing sodium hydroxide
      and sodium sulfide.

Z.    Monitoring means sampling and analysis, in a continuous or non-
      continuous sequence, using techniques which will .adequately
      measure emission levels and/or ambient air concentrations of
      air contaminants.

AA.   Multiple Chamber Incinerator means any article, machine, equip-
      ment, contrivance, structure or part of a structure used to
      dispose of combustible refuse by burning, consisting of three
      or more refractory lined combustion furnaces in series physically
       separated by refractory walls, interconnected by gas passage ports
      or ducts and employing adequate parameters necessary for max-
      imum combustion of the material to be burned.

BB.   New Source means any stationary source, the construction or
      modification of which is commenced after the effective date of
      this regulation.

CC.   Non-Condensibles means gases and vapors from processes that are
      not condensed at standard temperature and pressure unless other-
      wise specified.

DD.   Odor means the sensation resulting from stimulation of the human
      sense of smell.

EE.   Opacity means a state which renders material partially or wholly
      impervious to rays of light and causes obstruction of an observer's
      view.
                                  -3-

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FF.   Open Burning means' the burning of any matter in such a manner
      that the products of combustion resulting from the burning are
      emitted directly into the ambient air without passing through
      a stack, duct, or chimney.

GG.   Particulate Matter means any material, except water in uncom-
      bined form, that exists as  a liquid or a solid at standard
      conditions.

HH.   Person means any person, corporation, firm,  partnership or any
      state or local governmental  entity.

II.   Portable Hot-Mix Asphalt Plant means those asphalt plants or
      equipment which are designed to be dismantled and transported
      from one job site to another job site.

JJ.   ppm (parts per million) means parts of a gaseous contaminant
      per million parts of gas by volume.

KK.   Primary Ambient Air Quality Standard means that air quality
      which, allowing an adequate margin of safety, is requisite to
      protect the public health.

LL.   Process or process equipment means any equipment, device or con-
      trivance for changing any materials whatever or for storage or
      handling of any materials,  and all appurtenances thereto, in-
      cluding ducts, stack, etc., the use of which may cause any dis-
      charge of an air contaminant into the outdoor open air but not
      including that equipment specifically defined as fuel-burning
      equipment or refuse-burning equipment.

MM.   Process Height means the total weight of all materials intro-
      duced into any source operation which may cause any emissions
      of particulate matter.  Process weight includes solid fuels
      charged, but does not include liquid and gaseous fuels charged
      or combustion air.

NN.   Process Weight Rate means the rate established as follows:  For
      continuous or long-run steady-state source operations, the total
      process weight for the entire period of continuous operation
      or for a typical portion thereof, divided by the number of hours
      of such period or portion thereof.

      For cyclical or batch source operations, the total process
      weight for a period that covers a complete operation or an in-
      tegral number of cycles, divided by the hours of actual process
      operation during such a period.  Where the nature of any pro-
      cess or operation or the design of any equipment is such as
      to permit more than one interpretation of this definition, the
      interpretation that results in the minimum value for allowable
      emission shall apply.
                                  -4-

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00.   Salvage' Operations means any source consisting of any business,
      trade or industry engaged in whole or in part in salvaging or
      reclaiming any product or material, such as,  but not limited  to,
      reprocessing of used motor oils, metals, chemicals,  shipping
      containers, or drums, and specifically including automobile
      graveyards and junkyards.

PP.   Secondary Ambient Air Quality Standard means  that air quality
      which is requisite to protect the public welfare from any known
      or anticipated adverse effects associated with the presence of
      air pollutants in the ambient air.

QQ.   Show-Cause Order means an order issued by the Department to 'a
      source which is requesting permission for construction and
      which the Department, after reviewing their construction plans,
      has reason to believe may violate a regulation of the Department
      or contribute to air pollution.  The order requires  that the
      source give reason as to why construction of  modification of the
      source should not be halted.

RR.   Smoke means small gas-borne particles resulting from incomplete
      combustion, consisting predominantly, but not exclusively, of
      carbon and other combustible material.

SS.   Source means any source at, from, or by reason of which there
      is emitted into the atmosphere any air contaminant,  or the
      facility, equipment or other property by which the emission
      is caused or from which the emission comes.

TT.   Source Operation means the last operation preceding  the emission
      of air contaminants, when this operation:

      (1)  Results in the separation of the air contaminants from the
           process materials or in the conversion of the process mat-
           erials into air contaminants, as in the  case of fuel com-
           bustion, and,

      (2)  Is not an air cleaning device.

UU.   Stack means any chimney, flue, conduit, or duct arranged to
      conduct emissions to the ambient air.

VV.   Standard Conditions means a dry gas temperature of 70°F. and
      a gas pressure of 14.7 pounds per square inch absolute.

WW.   TRS (total reduced sulfur) means hydrogen sulfide, mercaptans,
      dimethyl sulfide, dimethyl disulfide and any  other organic sul-
      fide present.

XX.   Ringelmann Smoke Chart means the chart published and described
      in the U. S. Bureau of Mines Information Circular 8333.
                                  -5-

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YY.   Uncontrolled Emission means an emission which has not been
      treated by control equipment or in some cases, the emission
      before treatment by control equipment.

II.   Wigwam Burner means wood waste burning  devices commonly called
      teepee burners, silos, truncated cones, and other such burners
      commonly used by the wood product industry for the disposal by
      burning of wood wastes.

AAA.  Backgroud Level means the value assigned to the quantity of
      particulate or gaseous material in ambient air which originates
      from natural sources uninfluenced by the activity of man.

BBB.  Stationary Source means any building structure, facility, or
      installation which emits or may emit any air pollutant.

CCC.  Modification means any physical change  in, or change in the method
      of operation of, a stationary source which increases the amount
      of any air pollutant (to which a standard applies) emitted by
      such source 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.

      a.  An increase in the production rate  if such increase does
          not exceed the operating design capacity of the affected
          facility;

      b.  An increase in hours of operation.

      c.  Use of an alternative fuel or raw material if prior to the
          date any standard under this part becomes applicable to such
          facility, the affected facility is  designed to accomodate
          such alternative use.

ODD.  Pilot Plant means any scaled-down working model of an existing
      or proposed facility.  Such pilot plant shall not have a design
      capacity in excess of 1/10 that of the  full scale facility of
      which it is a model.

EEE.  Department means the Department of Health and Welfare.

FFF.  Indirect Source means any building, structure, facility or in-
      stallation the operation or use of which at the location pro-
      posed, may indirectly result in an increase in ambient air
      concentrations of any motor vehicle related pollutant for which
      there is a State or Federal ambient air quality standard.  Such
      sources may include but are not limited to:
                                  -6-

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           (a)   Highways and roads

           (b)   Parking lots and garages

           (c)   Retail  facilities

           (d)   Recreational centers and  amusement parks

           (e)   Sports  stadiums

           (f)   Airports

           (g)   Commercial  or industrial  developments.

GGG.  Construction means fabrication, erection or installation of a
      source.

HHH.  Commence Construction or Modification means to engage in a con-
      tinuous program of construction or  modification,  or to engage
      in a program of planned incremental development,  including site
      clearing, grading, dredging,  or landfill ing, specifically de-
      signed for the source in preparation for the fabrication, erection,
      or installation of the building components of the source.  For
      the purpose of this Regulation, delays or interruptions resulting
      from Acts of God, strikes, litigation, or other matters beyond
      the control of the owner, shall be  disregarded in determining
      whether a construction or modification program has  commenced and/
      or is continuous.

III.  Urbanized Area means any area within the city limits of, or with-
      in five (5) miles of the city limits of any city  with a population
      of more than 10,000 persons.

JJJ.  Ambient Air Quality Violation means any single ambient concen-
      tration of any air contaminant that exceeds any national, state,
      or local  ambient air quality standard at any point  in an area
      outside the source property line.

KKK.  Emission Standard Violation means  any emission rate that exceeds
      the standards set forth in these Regulations, in  permits issued
      by the Department or any other legally enforceable  document
      developed by the Department.

LLL.  Malfunction means any sudden and unavoidable failure of air pol-
      lution control equipment, process  equipment or 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 equipment breakdown  shall not be
      considered malfunctions.

      Permittee - any person or other legal entity which  is legally re-
      sponsible for a source of air contamination of the  atmosphere.
                                  -7-

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      Air Pollution Source Permit - a final  order issued by the De-
      partment which contains specific emission limits and standards
      for a source in accordance with environmental  laws,  rules,  reg-
      ulations,and standards of the State of Idaho.
000.  Board - Idaho Board of Health and Welfare.
PPP.  Director - the Director of the Department of Health  and Welfare.
QQQ.  Notice - defined by Idaho Code.
RRR.  Department - Idaho Department of Health and Welfare.
                                  -8-

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         SECTION 3

(3.0)         REGISTRATION AND PERMIT PROCEDURES  FOR STATIONARY  SOURCES

             A.   Registration of Existing  Sources^

                 All  existing sources shall  register within 90  days  after the ef-
                 fective date or upon relocation on forms provided by the Department.

             B.   Permits For New.and Modified Sources

                 No owner or operator shall  commence construction or modification
                 of any stationary source  after  the effective date of this regulation
                 without first obtaining a Permit to Construct  from  the Department.

                 1.  Application for Permit to Construct or Modify shall  be made
                     on forms furnished by the Department, or by other means
                     prescribed by the Department.

                 2.  A separate application is required for each source.

                 3.  Each application shall  be signed by the applicant.

                 4.  Each application shall  be accompanied by site information,
                     plans, description  specifications, and drawings showing the
                     design of the source, the nature and amount of  emissions,
                     and the manner of which it  will be operated and controlled.

                 5.  Any additional information, plans, specifications, evidence
                     or documentation that the Department may require shall be
                     furnished upon request.

             C.   General Procedures

                 1.  No permit to Construct or Modify shall be  granted unless the
                     applicant shows to the satisfaction of the Department that:

                     a.  The source will operate without causing a violation of  any
                         local, State or Federal Air Pollution  Control  Regulation.

                     b.  The source will not prevent or interfere with attainment
                         or maintenance of any national standard.

                 2.  The Department will act within 60 days on  an application and
                     will notify the applicant in writing on approval,  conditional
                     approval or denial of the application.  The Department will
                     set forth reasons for any denial.

                 3.  The Department may impose any reasonable conditions  upon an
                     approval, including conditions requiring the source  to be pro-
                     vided with:

                                               -9-

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        a.  Sampling ports of a size, number, and location as the
            Department may require.

        b.  Safe access to each port.

        c.  Instrumentation to monitor and record emission data.

        d.  Any other sampling and testing facilities as may be deemed
            necessary.

    4.   The Department may cancel  an  approval  if  the  construction  is
        not begun within two years from the date  of issuance, or if
        during the construction, work is suspended for one year.

    5.   Any owner or operator subject to the provisions of this reg-
        ulation shall furnish the Department written  notification
        as follows:

        a.  A notification of the anticipated date of initial start-
            up of the source not more than 60 days or less than 30
            days prior to such date.

        b.  A notification of the actual date of  initial start-up of
            the source within 15 days after such  date.

    6.   Within 60 days after achieving the maximum production rate at
        which the source will be operated but not later than 180 days
        after initial start-up of such source, the owner or operator
        of such source may be required to conduct a performance test
        in accordance with methods and under operating conditions
        approved by the Department and furnish the Department a
        written report of the results of such performance test.

        a.  Such test shall be at the expense of  the  owner or operator.

        b.  The Department may monitor such test  and  may also conduct
            performance tests.

        c.  The owner or operator of a source shall provide the Depart-
            ment 15 days prior notice of the performance test to
            afford the Department the opportunity to  have an observer
            present.

D.  Exemptions

    No registration or permit to construct is required for the following
    classes of equipment:

    1.   Air conditioning or ventilating equipment not designed to remove
        air contaminants generated by or released from equipment.
                                 -10-

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                 2.  Air  contaminant detectors or  recorders, combustion controllers,
                    or combustion  shutoffs.

                 3.  Fuel  burning equipment  for  indirect heating and for heating
                    and  reheating  furnaces  using  gas exclusively with a capacity
                    of less  than 50 million BTU per hour  input.

                 4.  Other fuel  burning  equipment  for indirect heating with a cap-
                    acity of less  than  one million BTU per hour input.

                 5.  Mobile internal combustion  engines, marine installations and
                    locomotives.

                 6.  Laboratory  equipment  used exclusively for chemical or physical
                    analysis.

                 7.  Pilot  plants  with  written  approval from the Administrator,
                    renewable annually, the products from which are not offered
                    for  sale except in  developmental quantities.

                 8.  Any  other class or  size of  equipment  specifically exempted by
                    the  Department.

             E.   Issuance of a Permit  to Construct or Modify or Certificate of
                 Registration shall not  relieve  any owner  or operator of the re-
                 sponsibility to comply  with all applicable local, State, and
                 Federal  regulations.

         SECTION 4

(3.0)         Permit  Procedures for  Indirect  Sources

             A.   Applicability

                 The requirements of this  Section  are applicable to the following:

                 1.   In an urbanized area:

                    a.   Any new parking facility  or other new indirect source with
                         an associated parking area which  has a parking capacity
                         of 1,000 cars or  more;  or

                    b.   Any modified  parking facility, or any modification of an
                         associated parking  area,  which increases parking by 500
                         cars or more; or

                    c.   Any new highway section with an anticipated average annual
                         daily traffic volume of 20,000 or more vehicles per day
                         within  ten years  of construction; or

                    d.   Any modified  highway section which will increase average
                         annual  daily  traffic volume by 10,000 vehicles per day
                                              -11-

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        within ten years after modification.

    2.   Oustide an urbanized area:

        a.   Any new parking facility, or other new indirect source
            with an associated parking area,  which has a parking cap-
            acity of 2,000 cars or  more; or

        b.   Any modified parking facility,  or other modified indirect
            sources with associated parking area,  which increases
            parking capacity by 1,000 cars  or more.

    3.   Any airport, the construction or general modification program
        of which is expected to result in the following activity
        within ten years of construction or modification:

        a.   New airport:  50,000 or more operations  per year by
            regularly scheduled air carriers, or use by 1,600,000
            passengers per year.

        b.   Modified airport:   Increase of 50,000  operations per year
            by regularly scheduled  air carriers over the existing
            volume of operations, or increase of 1,600,000 passengers
            per year.

    4.   Where an indirect source is constructed or modified in increments
        which individually are not  subject  to review under this par-
        agraph, all such increments occurring since the effective date
        of this regulation shall be added together for determining the
        applicability of this  Section.

B.  Permits for New and Modified Indirect Sources

    No  owner or operator shall commence construction or modification
    of  any indirect source after the effective date  of this regulation
    without first obtaining a  Permit to Construct  from the Department.

    1.   Application for a Permit to Construct or Modify shall.be
        made on forms furnished by  the Department, or by other means
        prescribed by the Department.

    2.   A separate application is required  for each  source.

    3.   Each application shall be signed by the applicant.

    4.   Each application shall be accompanied by site information,
        plans, description, specifications, and drawings showing the
        design of the source,  the nature and  amount  of emissions, and
        the manner in which it will be operated and  controlled.

    5.   Any additional information, plans,  specifications, evidence
                                 -12-

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    or documentation that the Department may require shall  be furnished
    upon request.

C.   General  Procedures

    1.  No permit to Construct or Modify will  be granted unless the
        applicant shows to the satisfaction of the Department that:

        a.  The source will  operate without causing a violation of
            any local, State or Federal  Air Pollution Control Regulation.

        b.  The source will  not prevent  or interfere with attainment
            or maintenance of any national ambient air quality standard.

    2.  The Department will  review the application within 15 days to
        determine if any additional information is required.  The De-
        partment will notify the applicant requesting such information.

    3.  The Department shall, according  to procedures on file at the
        Department, review all information within 15 days after all
        needed information has been submitted and provide an analysis
        of the effect of the operation or use of the indirect source
        on ambient air quality and a description of the Department's
        proposed approval or disapproval.

        a.  The analysis provided for in this subsection and the Depart-
            ment's proposed action, together with the information sub-
            mitted by the owner or operator, shall be made available
            to the public in at least one location in each county
            in which the indirect source is to be located.   The
            availability of such materials shall be made known by
            notice published in a newspaper of general circulation
            in each county in which the  indirect source is to be located.
            A copy of such notice shall  be sent to the Environmental
            Protection Agency and to other appropriate State and local
            agencies.  There shall be a  30 day period after publication
            for comment on the air quality effects of the indirect
            source.  Such comment shall  be made in writing to the
            Department.

        b.  After consideration of comments and any additional information
            submitted during the comment period, and within 45 days
            after publication of the notice, the Department will notify
            the applicant in writing of approval, conditional approval,
            or denial of the permit.  The Department will set forth
            reasons for any denial.

    4.  The Department may impose reasonable conditions upon an approval.

    5.  The Department may cancel an approval  if the construction is
        delayed more than two years from the date specified in the
        application.  Further, if construction is not begun within five
                                  -13-

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                     years  after issuance  of the  permit,  the  Department may re-
                     evaluate  the proposal  in light  of any  changed  conditions  in
                     the vicinity of the proposed facility  that  were  not anticipated
                     at  the time of review and may impose any additional  conditions
                     on  approval  that may  be necessary to prevent  interference with
                     the attainment or maintenance of any national  ambient  air
                     quality standard.

                 Issuance of a permit to construct shall  not  relieve  the owner or
                 operator of the responsibility to comply with all  applicable  local,
                 State,  or  Federal  regulation, or any applicable portions of the
                 states  control  strategy.
         SECTION 5

(13.0)        Reporting
             A.   The Department,  in  furtherance  of its  duties  granted  by  the  1972
                 Idaho  Session  Laws, Chapter  347,  Section  5  (1), may require  a
                 person engaged in an activity which  may violate the Air  Pollution
                 Control  Act or any  rules  or  regulations adopted thereunder to:

                 1.   Prepare a  schedule  whereby  the unlawful activity  will be
                     brought into compliance  over  a specified  period of time;

                 2.   Submit periodic reports  to  the Department indicating progress
                     in achieving compliance;

                 3.   Keep and maintain appropriate records or  to monitor  air  con-
                     taminants  at the source, in the  ambient air,  or in vegetation
                     to demonstrate  compliance;

                 4.   Develop emergency  episode  plans to help  prevent  ambient air
                     pollution  concentrations from reaching  levels which  would
                     cause substantial endangerment to  health.

                 5.   Any emission standard violation  due to  a  malfunction must
                     be reported to  the  Department no later  than the end  of the
                     working day following the occurrence, unless  otherwise specified
                     by the Department.

             B.   The Administrator,  after  hearing, may  require such compliance
                 schedulesv periodic reports, records and  monitoring,  or  emergency
                 episode plans  for an individual pollution source  or for  an entire
                 group  or class of such  pollution  sources.

             C.   All reports and information  submitted  to  the  Department  shall be
                 provided in a  format approved by  the Department.

             D.   Any records or information furnished to the Department shall be
                 subject to the confidentiality  provisions  of Section 114 of the
                 1970 Federal Clean  Air  Act.
                                               -14-

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         SECTION 6

(7.0)         Scheduled Malntenace
             Emissions  exceeding  any of the limits  established  in  these  regulations.
             as a direct result of the shutdown  of  any  air pollution  equipment  for
             scheduled  maintenance while the related  production equipment  con-
             tinues to  operate, shall  require the following:

             A.  Such occurrence  shall  be reported  in writing to the  Department as
                 soon as reasonably possible; and permission  from  the Department
                 must be received prior to such  a shutdown.

             B.  Permission may be granted only  in  those cases  where  the maximum
                 reasonable effort, including off-shift labor where required,  has
                 been made to accomplish such maintenance during periods of non-
                 operation of any related source operations  or  equipment.

             C.  The person responsible for such emission shall, with all  practicable
                 speed, initiate  and complete appropriate action to correct the
                 conditions causing such emissions  to exceed  said  units; to re-
                 duce the frequency of occurrence of  such conditions; to minimize
                 the amount by which said limits are  exceeded;  and shall,  upon  re-
                 quest  of the Department, submit a  full report  of  such occurrence.

             D.  Persons responsible for operating  equipment  that  might exhaust
                 harmful contaminants during maintenance shutdowns, shall  provide
                 auxiliary pollution abatement equipment to maintain  levels below
                 those  harmful to man, animals,  and vegetation, or reduce  pro-
                 duction levels to meet such requirements.
         SECTION 7

(5.0)        Variances
             A.   Petition.   A variance proceeding shall  be commenced by filing  three
                 copies of a petition for variance with  the Administrator.   The
                 complaint may be accompanied by such affidavits  or other proof
                 as the petitioner may submit in order to make it possible for  the
                 Administrator, if he so desires, to dispose of the matter without a
                 hearing.  The petition shall contain the following:

                 1.  A concise statement of the facts upon which  the variance is
                     requested, including a description  of the business or activity
                     in question; the quantity and type  of raw materials processed;
                     an estimate of the quantity and type of comtaminants dis-
                     charged; a description of existing  and proposed equipment
                     for the control  of discharges; and  a time schedule for bringing
                     the activity into compliance;

                 2.  A concise statement of why the petitioner believes that com-
                     pliance with the provision from which variance is  sought
                                               -15-

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        would impose an arbitrary or unreasonable hardship, including
        a description of the costs that compliance would impose on the
        petitioner and other, and of the injury that the grant of the
        variance would impose on the public; and

    3.  A clear statement of the precise extent of the relief sought.

B.  Notice.   The Department shall give notice of all variance petitions
    as required by law.

C.  Investigation and Recommendation.   After investigating the variance
    petition and considering the views of person who might be adversely
    affected by the grant of the variance, the Department staff shall
    within 21 days after the filing of the petition, make a recommend-
    ation to the Administrator as to the disposition of the petition.
    The recommendation, a copy of which shall be served on the petitioner,
    shall include:

    1.  A description of the efforts made by the Staff to investigate
        the facts as alleged and to ascertain the views of persons
        who might be affected, and a summary of the views so
        ascertained;

    2.  A statement of the degree to which, if at all, the Staff
        disagrees with the facts as alleged in the petition;

    3.  Allegations of any other facts the Staff believes relevant
        to the disposition of the petition;

    4.  The Staff's assessment of the costs that compliance would
        impose on the petitioner and on others and of the injury that
        the grant of the variance would impose on the public; and

    5.  The Staff's reasoned recommendations as to what disposition
        should be made of the petition.

D.  Objections to Petition.  Any person may file with the Department
    within twenty-one days after the filing of the petition, a
    written objection to the grant of the variance.  A copy of such
    objection shall be provided by the Department to the petitioner.

E.  Authorization of Hearing.  If no objection is made by the Staff
    or by any other person to the grant of the variance within 21
    days after the filing of the petition, the Administrator shall
    authorize a hearing unless it determines either:

    1.  That even if all the facts alleged in the petition are true,
        the petitioner is not entitled to a variance; or

    2.  That the petitioner has shown from affidavits or other proof
        that compliance with the provisions from which variance is
        sought would impose an arbitrary or unreasonable hardship.
                                 -16-

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                 No  variance  shall be granted, with or without hearing, without
                 adequate  proof by the  petitioner that  compliance would  impose
                 an  arbitrary or unreasonable hardship.

                 If  the Administrator decides not to hold a hearing, he shall pass
                 upon  the  petition and  shall prepare an opinion stating his reasons
                 both  for  the grant or  denial of the petition and for his decision
                 not to hold  a hearing.

                 The Administrator may  authorize a hearing without waiting for the
                 expiration of the 21 days during which objections may be filed,
                 but shall not rule upon  the petition without hearing until the
                 21  days have elapsed.

             F.   Notice of Hearing.  The  Hearing Officer, after appropriate con-
                 sultation with the parties, shall set a time and place for hearing
                 and shall give notice  to the petitioner, the Administrator, and
                 anyone who has filed an  objection to the petition at least 21
                 days  prior to the date of the hearing.  The hearing shall be
                 set for a date no later  than 60 days after the filing of the
                 petition.  Any request by the petitioner for a continuance
                 shall constitute a waiver of the right to a decision within 90
                 days, under  Section 38 of the Act, for the period of the continuance.

             G.   Decision.  The Administrator shall render a final decision on
                 the petition within 90 days after the filing of the petition,
                 except that  time included in a continuance granted at the request
                 of  the petitioner shall  not be counted.  When exigencies of time
                 require,  the Administrator may delay the filing of an opinion
                 until not more than 30 days after the filing of its final order
                 under this SECTION.

             H.   Variance  from New Regulation.  If any person files a petition for
                 variance  from a regulation within 20 days after the effective
                 date  of such a regulation, the operation of such regulation shall
                 be  stayed as to such person, pending the dispositon of the petition.
                 The Administrator may  hold a hearing upon said petition  within
                 five  days from the notice of such hearing, but in all other re-
                 spects, the  rules in this Section shall apply to the extent they
                 are consistent with the  hearing date set by the hearing  officer.
         SECTION  8

(2.0)         Circumvention
             No person  shall willfully  cause or permit the installation or use of any
             device or  use  of  any  means which, without resulting  in  a  reduction
             in the total amount of air contaminants  emitted,  conceals an emission
             of air contaminants which  would otherwise violate these rules and
             regulations.
                                              -17-

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         SECTION 9

(2.0)         Total Compliance

             Where more than  one ambient air quality standard  or emission  standard
             may apply to a particular situation,  all  such  standards  must  be  met
             for total  compliance,  unless otherv/ise provided for in these  rules and
             regulations.

         SECTION 10

(9.0)         Sampling and Analytical  Procedures

             All sampling and analytical  procedures shall be as  approved by the
             Department.   A procedures manual  to be entitled "Procedures Manual
             for Air Pollution Control" shall  be published  and maintained  by  the
             Department staff.  The procedures manual  is  available upon request.

         SECTION 11

(2.0)         Provisions Governing Specific Activities

             A.   Toxic Substances.   Any contaminant which is by  its nature toxic
                 to human or  animal life or vegetation,  but is not specifically
                 controlled elsewhere in these rules and  regulations, shall not be
                 emitted in such quantities or concentrations  as to alone, or in
                 combination  with other contaminants,  injure or  unreasonably  af-
                 fect human or animal  life or  vegetation.   As  information  becomes
                 available, limits  will be specified for  concentration of  toxic
                 materials in the ambient air  and  emission  limits will be  set
                 accordingly.

             B.   Modifying Physical Conditions.  When  physical conditions  such as
                 tall adjacent buildings, valley and mountain  terrain, etc.,  are
                 such as to limit the normal  dispersion  of  air contaminants,  the
                 Board may set more restrictive  emission  limitations  on those
                 sources affected by the usual conditions when air quality stan-
                 dards would  reasonably be expected to be exceeded.

             C.   Source Density.  Should areas develop where an  individual source
                 is meeting the requirements of  these  rules and  regulations,  yet
                 the ambient  air quality standards are being exceeded or might
                 reasonably be expected to be  exceeded,  the Board may set  more
                 restrictive  emission limits than  are  contained  in these rules
                 and regulations.
                                              -18-

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         B.   AIR POLLUTION  EMERGENCY  REGULATION

         SECTION 1

(2.0)         PURPOSE

             The purpose of this  regulation  is to  define  criteria  for  an   air  pol-
             lution emergency,  to formulate  a plan for  preventing  or alleviating
             such an emergency, and  to  specify rules  and  regulations for  carrying
             out the plan.   The procedures for implementing  this regulation  are
             delineated in  Chapter XII  of the State Implementation Plan.

         SECTION 2

(8.0)         EPISODE CRITERIA

             In order to prevent  air quality in  any area  of  the  state  from degrad-
             ing to the point where  the public health would  be substantially en-
             dangered, the  Department is specifying four  stages  or levels of atmos-
             pheric stagnation and/or degraded air quality.   At  each of these  levels,
             a different emergency action plan will go  into  effect for the stricken
             area.   These stages  consist of:

                 Stage 1 -  Air Pollution Forecast:  An  internal  watch  by  the Depart-
                           ment shall be actuated  by a  National  Weather Service  re-
                           port that an Atmospheric Stagnation Advisory to be  issued,
                           or the equivalent local forecast  of stagnant atmospheric
                           conditions.

                 Stage 2 -  Alert: This is the first stage at which air pollution
                           control actions by industrial  sources are to begin.

                 Stage 3 -  Warning:   the warning level  indicates-that  air quality
                           is continuing to  degrade and that further control actions
                           are necessary.

                 Stage 4 -  Emergency:  The emergency level indicates that air  quality
                           is continuing to  degrade to  a  level that will  endanger
                           the public health and that the most stringent  control
                           actions are necessary.

             Once an episode stage is reached, emergency  action  corresponding  to
             that level will remain  in effect until air quality  measurements indicate
             that another stage (either lower or higher)  has been  attained.  At  such
             time, actions  corresponding to  the  next level will  go into effect.
             This procedure will  continue until  the episode  is terminated.

             The air quality criteria defining each of  these episode stages  are
             presented in Figure  VII-1.  The 24-hour average ambient concentration
             of particulate matter,  measured either in  micrograms  per  cubic  meter
             (ug/m3) or as  a coefficient of  haze (COHs),  is  oresented  along  the
                                              -19-

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             horizontal  axis.   The vertical  axis  presents the 24-hour average
             ambient concentration of sulfur dioxide,  measured either in parts
             per million (ppm)  or in micrograms per cubic meter (ug/m3).
         SECTION 3

(14.0)        PUBLIC NOTIFICATION
             A.   On the basis  of degrading air quality as  determined by the Depart-
                 ment,  and the criteria for emergency episode levels as shown in
                 Figure VII-1, the Department will  utilize appropriate news media
                 to insure that the following information  is  announced to the public:

                 1.  Definition of the extent of the problem.

                 2.  Indication of the action taken by the Department of Environmental
                     Protection and Health.

                 3.  Air pollution forecast for next few days.

                 4.  Notice of when the next statement from the Department of
                     Environmental Protection and Health will be issued.

                 5.  Listing of all general  procedures which  the public,  commercial,
                     institutional and industrial sectors  are required to follow.

                 6.  Specific  warnings and advice to those person who because of
                     acute health problems,  may be most susceptible to the effects
                     of the episode.

                 Such announcements will  be made by the news  media during regularly
                 scheduled television and radio news broadcasts and in all  editions
                 of specified  newspapers.  In addition, when  the stage 4 emergency
                 level  is reached, television and radio stations designated by the
                 Department will repeat these announcements at one-hour intervals
                 during normal broadcasting hours.

             B.   The Department will  assure that all significant source of air con-
                 taminants are notified of the emergency level  by telephone, or
                 other appropriate means.
         SECTION 4

(2.0)        GENERAL RULES
             All  persons in the designated stricken area shall  be governed by the
             following rules for each emergency episode level:

             A.   Level 1 - Air Pollution Forecast

                 1.   There shall be no open burning by any person of tree waste,
                     vegetation, refuse, or debris in any form  (including those
                                              -20-

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        categories that are normally allowed under the Open Burning
        Regulation).

B.  Level 2 - Alert

    1.  There shall be no open burning by any persons of tree waste,
        vegetation, refuse, or debris in any form.

    2.  The use of incinerators for the disposal  of any form of solid
        waste (except those  conical  burners for which specific Abate-
        ment Plans exist) shall be limited to the hours between 12
        noon and 4 p.m.

    3.  Persons operating fuel-burning equipment which requires boiler
        lancing or soot blowing shall perform such operations
        only between the hours of 12 noon and 4 p.m.

    4.  Commercial, industrial or institutional facilities utilizing
        coal or residual fuel oils are required to switch to natural
        gas or distillate oil if available.

C.  Level 3 - Warning

    1.  There shall be no open burning by any persons of tree waste,
        vegetation, refuse, or debris in any form.

    2.  The use of incinerators for the disposal  of any form of
        solid waste or liquid waste shall be prohibited (except
        those conical burners for which specific Abatement Plans.
        exist).

    3.  Persons operating fuel-burning equipment which requires boiler
        'lancing or soot blowing shall perform such operations only
        between the hours of 12 noon and 4 p.m.

    4.  Commercial  industrial and institutional  facilities utilizing
        coal or residual fuel are required to either:

        • switch completely to natural gas or distillate oil.

        • if these low sulfur fuels are not available, curtail the
          use of existing fuels to the extent possible without causing
          injury to persons or damage to equipment.
                                 -21-

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01
o>
(8

0)
CM



 CM
Q.
0.
        0.8
        0.7
        0.6
0.5
        0.4
        0.2
                                     FIGURE VII-1
                      EMERGENCY  EPISODE AIR POLLUTION CRITERIA
O)
O)

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D.   Level  4 - Emergency (called only with specific concurrence of
              Governor)

    1.   There shall  be no open burning by any persons of tree waste,
        vegetation,  refuse, or debris in any form.

    2.   The use of incinerators for the disposal  of any form of solid
        or liquid waste shall  be prohibited.

    3.   All places of employment described below shall immediately
        cease operations:

        a.  Mining and quarrying of nonmetallic minerals.

        b.  All construction work except that which must proceed to
            avoid emergent physical harm.

        c.  All manufacturing establishments except those required to
            have in  force an air pollution emergency plan.

        d.  All wholesale trade establishments, i.e. places of business
            primarily engaged in selling merchandise to retailers or
            industrial, commercial, institutional  or professional users,
            or to other wholesalers, or acting as  agents in buying
            merchandise for or selling merchandise to such  persons or
            companies except those engaged in the  distribution of
            drugs, surgical supplies and food. •

        e.  All offices of local, county and State government including
            authorities, joint meetings, and other public bodies except-
            ing such agencies which are determined by the chief admini-
            strative officer of local, county, or  State government
            authorities, joint meetings and other  public bodies to be
            vital for public safety and welfare and the enforcement
            of the provisions of this order.

        f.  All retail trade establishments except pharmacies, surgical
            supply distributors, and stores primarily engaged in the
            sale of food.

        g.  Banks, credit agencies other than banks, securities and
            commodities brokers, dealers, exchanges and services;
            offices  of insurance carriers, agents  and brokers, real
            estate offices.

        h.  Wholesale and retail laundries, laundry services and
            cleaning and dyeing establishments; photography studios;
            beauty shops, barber shops, shoe repair shops.

        i.  Advertising offices, consumer credit reporting, adjustment
            and collection agencies; duplicating,  addressing, blue-
            printing;  photocopy, mailing, mailing list and steno-
                                -23-

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                         graphic services;  equipment rental  services,  commercial
                         testing laboratories.

                     j.   Automobile  repair,  automobile  services,  garages.

                     k.   Establishments  rendering  amusement  and  recreational  services
                         including motion picture  theaters.

                     1.   Elementary  and  secondary  schools, colleges, universities,
                         professional  schools,  junior colleges,  vocational  schools,
                         and  public  and  private libraries.

                 4.   All  commercial  and  manufacturing establishments not  included
                     in  this  order will  institute  such  actions as will  result in
                     maximum  reduction of air  pollutants  from their operation by
                     ceasing, curtailing, or postponing operation which emit  air
                     pollutants  to the extent  possible  without causing  injury to
                     persons  or  damage to equipment.  These  action include  limiting
                     boiler lancing  or soot  blowing  operations for fuel burning
                     equipment to between the  hours  of  12 noon and 4 p.m.

         SECTION 5

(8.0)         SPECIFIC EMERGENCY  EPISODE  ABATEMENT  PLANS FOR  POINT SOURCES

             In  addition  to the  general  rules  presented in Section 4 above, the
             Department  shall require  that  specific  point sources adopt and
             implement their  own Emergency  Episode Abatement Plans in accordance
             with the criteria set forth in  Section  2 above.  An  individual plan
             be  revised  periodically by  the  Department  after consultation between
             the Department and  the  Point Source.
                                             -24-

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         C.   AMBIENT  AIR  QUALITY  STANDARDS

         SECTION  1

(2.0)         PURPOSE

             It is  the purpose  of this  regulation  to  establish  air quality  stand-
             ards for the State of Idaho which  define acceptable ambient  concentra-
             tions  of air contaminants consistent with established air quality
             criteria.

         SECTION  2

(2.0)         GENERAL

             A.  The  air  quality  standards  established herein shall apply to all of
                 the  State outside a  source property  line.

             B.  Where applicable air quality measurements  shall be corrected  to
                 a  reference temperature of 70°  F.  and to a  reference pressure of
                 14.7 pounds per  square inch absolute.

             C.  At such  time as  additional  pertinent information becomes available
                 with respect to  air  quality criteria, such  information shall  be
                 considered and new or  revised  air quality  standards promulgated
                 as required.

             D.  The  absence of an air  quality  standard  for  a specific contaminant
                 shall not preclude action  by the  Department to control such con-
                 taminants to assure  the health, welfare and comfort of people of
                 the  State.

             E.  All  measurement techniques for determining  compliance with national
                 Ambient  Air Quality  Standards  shall  be  approved by EPA.

         SECTION 3

(4.1)         PARTICULATE  MATTER

             A.  Primary  air quality  standards  are:

                 1.  75 micrograms per  cubic meter—annual  geometric mean.

                 2.  260  micrograms per cubic meter—maximum 24 hour concentration
                     not  to be  exceeded more than  once  per year.

             B.  Secondary air  quality  standards are:

                 1.  60 micrograms per  cubic meter—annual  geometric mean.

                 2.  150  micrograms per cubic meter—maximum 24 hour concentration
                     not  be be  exceeded more than  once per  year.
                                             -25-

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         SECTION 4

(4.2)         SULFUR OXIDES  (SULFUR  DIOXIDE)

             A.   Primary air quality standards  are:

                 1.  80 micrograms  per cubic  meter  (0.03  ppm)  -  annual
                     arithmetic  mean.

                 2.  365 micrograms per cubic meter  (0.14 ppm) - maximum  24-hour
                     concentration  not to  be  exceeded more than  once  per  year.

             B.   Secondary  air quality standards  are:

                 1.  1,300  micrograms  per  cubic meter  (0.50 ppm) - maximum  3-hour
                     concentration  not to  be  exceeded more than  once  per  year.

             C.   When more  than  one standard  is applicable, the  interpretation
                 that results in the most  stringent  standard shall apply.

         SECTION 5

(4.6)         PHOTOCHEMICAL  OXIDANTS

             A.   Primary and secondary air quality  standards are:

                 1.  160 micrograms per cubic meter  (0.08 ppm) - maximum  1-hour
                     concentration  not to  be  exceeded more than  once  per  year.

         SECTION 6

(4.4)         HYDROCARBONS

             A.   Primary and secondary air quality  standards,  as measured and
                 corrected  for methane, are:

                 1.  160 micrograms per cubic meter  (0.24 ppm) - maximum  3-hour
                     concentration  (between 6 a.m.  and  9  a.m.) not to be  exceeded
                     more than once per year.

             B.   The hydrocarbon air quality  standard  is  for use as a guide in
                 determining hydrocarbon emission control required to achieve the
                 photochemical oxidant standards.
                                              -26-

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                                   TABLE  VII-1

                        MAXIMUM  ALLOWABLE SULFUR  DIOXIDE
                              GROUND-LEVEL LIMITS*
Cone (c)
in
ppm (vol. )
Column 1
1.51
or over
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
Total Cumulative
Daily Exposure
Duration (t) in Hours
Between Sunrise
Between Sunrise and next
and Succeeding
Sunset Sunrise
Column 2 Column 3
0.05
0.62
0.67
0.73
0.80
0.89
1.00
1.14
1.33
1.60
2.00
2.67
4.00
8.00
0.10
1.24
1.34
1.46
1.60
1.78
2.00
2.28
2.66
3.20
4.00
5.34
8.00
16.00
Total Cumulative
Monthly Exposure
Duration (t) in Hours
During Hours Anytime
Between Sunrise During
and Sunset Month
Column 4 Column 5
1.00
4.40
5.10
5.90
6.90
8.30
10.00
12.40
15.60
20.40
27.80
40.00
62.50
111.00
2.00
8.80
10.20
11.80
13.80
16.60
20.00
24.80
31.20
40.80
55.60
80.00
125.00
222.00
Interpolation of Columns  2,  3,  4 and 5  shall  be  based  on  the  formula:
         0.8         1.6
    1 " c-0.21   r - c-0.21   t = 10/c2,  and  t  = 20/c2respectively
                                          -27-

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         SECTION 7

(4.3)         NITROGEN  DIOXIDE

             A.   Primary and secondary air  quality  standards  are:

                 1.   100 micrograms  per cubic meter (0.05ppm)  -  annual  arithmetic
                    mean.

         SECTION 8

(4.5)         CARBON  MONOXIDE

             A.   Primary and secondary air  quality  standards  are:

                 1.   10 milligrams per cubic meter  (9  ppm)  -  maximum  8-hour  con-
                     centration not  to be exceeded  more than  once  per year.

                 2.   40 milligrams per cubic meter  (35 ppm) - maximum 1-hour
                     concentration not to be exceeded  more  than once  per year.

         SECTION 9

(4.1)         SETTLEABLE PARTICIPATE

             A.   Primary and secondary air  quality  standards  are:

                 1.   0.8 milligrams  per square  centimeter  per month not  to be
                     exceeded  more than 25% of  the  time.

         SECTION 10

(4.7)         SULFURIC  ACID  MIST

             A.   Primary and secondary air  quality  standards  are:

                 1.   12 micrograms per cubic meter  - maximum  24-hour  concentration
                     not to be exceeded more than once per  month.

                 2.   30 micrograms per cubic meter  - maximum  1-hour concentration
                     not to be exceeded more than twice per week.

         SECTION 11

(4.7)         FLUORIDE^

             A.   Primary and secondary air  quality  standards  are  those concentra-
                 tions in the  ambient  air which result in  a total  fluoride content
                 in  vegetation used  for feed and forage of  no more than:

                 1.   40 parts  per million,  dry  basis - annual arithmetic mean.
                                              -28-

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                 2.   60 parts  per million,  dry basis  -  monthly  concentration  for
                     two consecutive  months.

                 3.   80 parts  per million,  dry basis  -  monthly  concentration
                     never to  be  exceeded.

         SECTION 12

(4.7)         BERYLLIUM

             A.   Primary and secondary air  quality  standards  are:

                 1.   0.01  micrograms  per cubic meter  -  maximum  24-hour concentra-
                     tion  not  to  be exceeded  more than  once per year.
                                             -29-

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         D.   REGULATION  FOR CONTROL  OF  OPEN  BURNING

         SECTION 1

(2.0)         INTRODUCTION

             A.   Purpose

                 The purpose and intent of this  regulation  is  to  eliminate  all
                 forms of  open burning  except  those  for which  an  alternate  means
                 of producing a similar public benefit  does  not exist.

             B.   Non-exemption from  other jurisdiction

                 The authority to continue certain forms of  open  burning  under  pro-
                 visions of this regulation  does not exempt  or excuse  a person
                 from the  consequent damage  or injuries which  may result  from such
                 conduct,  nor exempt a  person  from complying with applicable laws
                 and ordinances of other governmental jurisdiction not in conflict
                 with these regulations.

             C.   Local Control
                 This regulation is  not intended  to  interfere  with  the  rights  of
                 city or county government to provide equal  or more stringent
                 control of open burning within their respective jurisdictions.

         SECTION 2 .

(2.0)        GENERAL  RESTRICTIONS

             A.   Notwithstanding the provisions of subsection  B of  this section,
                 no person shall allow, suffer, cause or permit the open burning
                 of materials which  emit toxic contaminants  or large volumes of
                 smoke,  particulates or odors (such  materials  are garbage,  rubber,
                 plastics, heavy petroleum products, dead animals,  etc.).

             B.   No person shall allow, suffer, cause or permit any open burning
                 operation which does not fall into at least one of the categories
                 of Section 3.

             C.   Any  open burning operation that  would normally be  allowed  by
                 Section 3 of this regulation, but is determined to be  a nuisance,
                 hazard, or source of air pollution, shall be  prohibited.

         SECTION 3

(51.13)      CATEGORIES  OF ALLOWABLE BURNING

             A.   Fires used for the preparation of food, campfires  and  fires for
                 recreational purposes, under control of a responsible  person.
                                              -30-

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B.  Fires used for control or alleviation of fire hazard or for weed
    control when no alternate control  method exists.   When such
    burning requires a permit from an organized fire-fighting agency
    having proper jurisdiction, issuance of such permit shall be
    based on consideration of potential environmental damage and
    suitability of alternate methods in addition to other factors.

C.  Fires used in the training of organized fire-fighting personnel.

D.  Properly operated industrial flares for combustion of flammable
    gases.

E.  Readily combustible rubbish produced by operation of a domestic
    household may be burned on the property from which the rubbish
    was generated if no public or commercial solid waste collection
    service is available and the property is located in an area of
    low population density, defined as having fewer than 100 dwelling
    units per square mile.  This shall include tree leaves and
    gardening waste.  Rubbish is defined in the Idaho Solid Waste
    Control Regulations and Standards as "non-putrescible solid waste
    except abandoned vehicles and car bodies or car body parts, in-
    dustrial solid waste and agricultural solid waste."

F.  Burning at community tree disposal areas and private disposal
    sites shall be in compliance set forth in the Idaho Solid Waste
    Control Regulations and Standards.

G.  Open burning of junked motor vehicles will be permitted under the
    following conditions until December 31, 1971:

    1.  The persons responsible for the burning of a salvage operation
        shall contact a State Air Pollution Control Office of proper
        jurisdiction to obtain a weather evaluation and permission
        to burn on that day.

    2.  No burning will be allowed on Saturday or Sunday.

    3.  Burning hours will be 10:00 a.m. - 4:00 p.m.  unless other-
        wise stated.

    4.  Number of units to be burned at any one location at one burn
        shall be limited to 100 unless otherwise stated.

    5.  Tires and floormats shall be removed prior to burning.

    6.  Every reasonable effort will be made on the part of the sal-
        vage operation to prepare the units in such a manner that
        rapid and efficient combustion will occur.

    Any burning of motor vehicles after December 31,  1971, if deter-
    mined by the Department to be necessary, shall be conducted at
    one or several centralized locations.  Such locations shall be
                                 -31-

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    approved by the Idaho Department of Environmental Protection and
    Health.

H.  The open burning of plant life grown on the premises in the
    course of any agricultural, forestry, or land clearing operation
    may be permitted when it can be shown that such burning is nec-
    essary and that no fire or traffic hazard will  occur.   Convenience
    of disposal is not of itself a valid necessity for burning.

    1.  It shall be the responsibility of any person conducting such
        burning to make every responsible effort to burn only when
        weather conditions are conducive to a good smoke dissipation
        and only when an economical and reasonable alternate method
        of disposal is not available.

    2.  When such alternate method is made available, it shall be
        put into use within a reasonable time.

    3.  Any person conducting an agricultural, forestry, or land
        clearing burning operation similar to an operation carried
        out by a governmental agency shall follow the rules and
        procedures of the agency with regard to minimizing air
        pollution.

    4.  When such burning creates air pollution or a public nuisance,
        additional restrictions may be imposed to minimize the
        effect upon the  environment.

I.  Orchard heating is a recognized necessity for protection of crops
    from frost damage and will be permitted under the following con-
    ditions:

    1.  Open burning of tires and similar type rubber materials is
        prohibited.

    2.  After June 1, 1974, the use of stackless open-pot type heaters
        shall be prohibited.

    3.  After June 1, 1974, no orchard heating device with visible
        emission exceeding No. 2 on the Ringelmann Smoke Chart at
        normal operating conditions shall be used.

    4.  All heaters purchased after the effective date of these reg-
        ulations shall emit no more than one (1.0)  grams per minute
        of solid carbonaceous matter at normal operating conditions
        as certified by the manufacturer.  At the time of purchase,
        the seller shall certify in writing to the purchaser that all
        new equipment is in compliance with these rules and regulations.

    5.  A listing of heaters known to meet these standards shall be
        maintained by the Department and made available upon request.
                                -32-

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         E.   REGULATION  FOR CONTROL OF SMOKE AND OTHER VISIBLE EMISSIONS.

         SECTION  1

(2.0)         PURPOSE

             The  purpose of this  regulation is  to  control  visible  emission  from
             all  sources.  Such control will alleviate many  significant  nuisance
             problems  as well  as  help to  achieve and maintain acceptable levels
             of ambient  air quality.

         SECTION  2

(50.1.2)     STANDARD  FOR EXISTING  SOURCES

             No person shall  allow  the emission of any air contaminant for  a
             period or periods aggregating more than three (3) minutes in any
             one  hour  which is:

             A.   Darker  in shade  than  that designated No. 2 (40%  density)  on  the
                 Ringelmann Chart as published  by  the United States  Bureau  of  Mines;
                 OR

             B.   Of such opacity  as to obscure  an  observer's view  to the same
                 degree  as an emission described in A above.

         SECTION  3

(10.0)       STANDARD  FOR NEW SOURCES

             No person shall  allow  the emission of any air contaminant for  a
             period or periods aggregating more than three (3) minutes in any  one
             hour which  is:

             A.   Darker  in shade  than that designated No.  1  (20% density) on the
                 Ringelmann Chart as published  by  the United States  Bureau  of  Mines;
                 OR

             B.   Of such opacity  as to obscure  an  observer's view  to the same
                 degree  as an emission described in A above.

         SECTION  4

(9-0)        POINT OF  MEASUREMENT

             The  density or opacity of an air contaminant  shall be measured at
             the  point of its emission if observable, and  if not shall be measured
             at an observable point on the plume nearest the point of emission.
             When water particulate contributes to the opacity of  a  visible emission,
             the  measurement,  shall  be made immediately beyond the  point  where  the
             water particulate dissipates  and no longer contributes to the opacity.
                                             -33-

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         SECTION  5

(2.0)         EXCEPTION
            This. Visible  Emission  Regulation  shall not apply when  the  presence
            of water  or condensing water "vapor  is  the only  reason  for  the~fail-
            ure  of  the emission  to comply with  the requirements of this chapter.
                                            -34-

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        F.  REGULATION FOR CONTROL OF FUGITIVE DUST

        SECTION 1

(2.0)        Purpose

            The purpose of this regulation is to require that all reasonable pre-
            cautions be taken to prevent the generation of fugitive dust.

        SECTION 2

(50.1)       General Rules

            All reasonable precautions shall be taken to prevent particulate mat-
            ter from becoming airborne.  In determining what is reasonable, con-
            sideration will  be given to factors such as the proximity of dust
            emitting operations  to human habitations and/or activities and at-
            mospheric conditions which might affect the movement of particulate
            matter.  Some of the reasonable precautions may include, but are not
            limited to, the  following:

            A.  Use, where possible, of water or chemicals for control of dust
                in the demolition of existing buildings and structures, construct-
                ion operation, the grading of roads, or the clearing of land.

            B.  Application  of asphalt, oil, water or suitable chemicals to, or
                covering of  dirt roads, material stockpiles, and other surfaces
                which can create dusts.

            C.  Installation and use of hoods, fans and fabric filters or equiv-
                alent systems to enclose and vent the handling of dusty materials.
                Adequate containment methods should be employed during sandblast-
                ing or other operations.

            D.  Covering, at all times when in motion, open bodied trucks trans-
                porting materials likely to give rise to airborne dusts.

            E.  Conducting of agricultural practices such as tilling of land,
                application  of fertilizers, etc., in such a manner as to limit
                dust from becoming airborne.

            F.  Paving of roadways and their maintenance in a clean condition.

            G.  Prompt removal of earth or other stored material from streets.
                                             -35-

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         G.   REGULATION  FOR  CONTROL  OF  PARTICIPATE  EMISSIONS  FROM FUEL  BURNING
             EQUIPMENT.
         SECTION  1

(2.0)         Purpose
             The  purpose  of  this  regulation  is  to  establish  limits  of particulate
             emission  from fossil  fuel  burning  equipment  and from hogged  fuel
             boilers.
         SECTION  2

(51.5)        General  Rules
             A.   No  person  shall  allow,  suffer,  cause  or  permit  emissions  into  the
                 outdoor atmosphere  from any  fuel  burning equipment  or to  pass  a
                 convenient measuring  point near the stack outlet, particulate
                 matter  in  the flue  gases to  exceed the following  standards:

                 1.   For operations  with total  heat input less than  ten million
                     BTU per hour -  0.6  pounds  of particulates per million BTU
                     heat input.

                 2.   For operations  with total  heat input greater  than ten billion
                     BTU per hour -  0.12 pounds  of particulates  per  million BTU
                     heat input.

                 3.   For operations  with total  heat input greater  than ten million
                     and ten billion BTU per  hour the  maximum allowable emission,
                     Y  (pounds),  shall be determined by the following  equation:

                                 Log Y = 0.2300  log X  - 2.0111

                     where  X is the  total heat  input in millions of  BTU.

                 4.   Figure VII-1  illustrates these emission standards.

             B.   Heat input shall  be calculated  as the aggregate heat  content of
                 all  fuels  (using the  upper limit of their range of  heating value)
                 whose  products of combustion pass through the stack or chimney.

                 1.   When two or more  fuel-burning units  are connected to  a single
                     stack, the combined heat input of all  units connected to the
                     stack  shall  be  used to determine  the allowable  emission from
                     the stack.

                 2.   When a single fuel-burning  unit is connected  to two or more
                     stacks, the allowable emission from  all the stacks combined
                     shall  not exceed  that allowable for  the same  unit connected
                     to  a single stack.
                                             -36-

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         SECTION  3

(2.0)         Exceptions
            All  fuel  burning  equipment  rated  less  than  one  (1)  million  BTU
            per  hour  heat  input  is  exempt  from  this  regulation.
                                              -37-

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                                    FIGURE VII-2



                      MAXIMUM ALLOWABLE PARTICULATE EMISSIONS

                            as a Function of Heat Input
oo
If)
     3
     Q.

     C
(B

O)
LU   CO





3  "§
=3   C
O   O
I—I  T—

a:  ^


2  'i

Ul   S_
_l   
fl«J   ^3

<  *3
     U
S   4-
i—i   03
X   CL


S   (/)
     •o
     c
     3
     O
     O.
     0.10
                      10
so  too
50O  1.000
                                                                      OJ2
S0OO O.OOO 30,000
                     TOTAL HEAT INPUT (millions of  BTU's/hr)
                                        -38-

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         H.   REGULATION FOR CONTROL OF PARTICULATE EMISSIONS  FROM INDUSTRIAL
             PROCESS
         SECTION 1

(2.0)         Purpose
             The purpose of this  regulation is  to  establish  particulate  emission
             limits  for any operation,  process  or  activity not identified  by name
             and specifically regulated elsewhere  in  these rules  and regulations,
             and shall  apply during  normal  operation.
         SECTION 2

(50.1)       EMISSION LIMITATIONS
             No person shall  cause,  suffer,  allow or permit the emission of par-
             ticulate matter to the  atmosphere from any process or process  equip-
             ment in excess of the amount shown in Table VII-2 for the process
             weight rate allocated to such a process or process equipment.   The
             rate of emission shall  be the total  of all emission points from the
             source.
                                             -39-

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                                  TABLE  VI1-2

                     ALLOWABLE  RATE  OF  EMISSION  BASED  ON

                            PROCESS  WEIGHT  RATE*
Process Weight
Rate
Lb/Hr
100
200
400
600
800
1,000
1,500
2,000
2,500
3,000
3,500
4,000
5,000
6,000
7,000
8,000
9,000
10,000
12,000
Tons/Hr
0.05
0.10
0.20
0.30
0.40
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.50
3.00
3.50
4.00
4.50
5.00
6.00
Rate of
Emission
Lb/Hr
0.551
0.877
1.40
1.83
2.22
2.58
3.38
4.10
4.76
5.38
5.96
6.52
7.58
8.56
9.49
10.4
11.2
12.0
13.6
Process Weight
Rate
Lb/Hr
16,000
18,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
120,000
140,000
160,000
200,000
1,000,000
2,000,000 1,
6,000,000 3,

Tons/Hr
8.00
9.00
10.00
15.00
20.00
25.00
30.00
35.00
40.00
45.00
50.00
60.00
70.00
80.00
100.00
500.00
000.00
000.00

Rate of
Emission
Lb/Hr
16.5
17.9
19.2
25.2
30.5
35.4
40.0
41.3
42.5
43.6
44.6
46.3
47.8
49.0
51.2
69.0
77.6
92.7

interpolation of the data in this table for process  weight  rates  up  to  60,000
 Ib/hr shall be accomplished by use of the equation  E =  4.10 p°-57, and  inter-
 polation and extrapolation of the data for process  rates  in excess of 60,000
 Ib/hr shall be accomplished by use of the equation:

          E = 55.0 pO-TI  -40, where E = rate of emission in  Ib/hr  and
                         P = process weight rate in  tons/hr.
                                       -40-

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         i.   REGULATION  FOR SULFUR CONTENT  OF FUELS
         SECTION i
(2.0)         PURPOSE
             The purpose of this  regulation is to  prevent  excessive  ground  level
             concentrations of sulfur dioxide from fuel  burning  sources  in  Idaho.
         SECTION 2
(50.2)       SULFUR CONTENT IN FUELS
             Definitions as used  in this  regulation:
             1.   "ASTM"  means  American Society for Testing and Materials.
             2.   "Distillate Fuel  Oil" means any oil  meeting  the specifications
                 of ASTM Grade 1  or Grade 2 fuel oils.
             3.   "Residual  Fuel Oil"  means  any oil  meeting the specifications
                 of ASTM Grade 4,  Grade 5 and Grade 6 fuel oils.
         SECTION 3
(50.2)       RESIDUAL FUEL  OILS
             1.   After January, 1973, no  person shall sell, distribute,  use or make
                 available  for use, any residual fuel oil  containing more  than 2.5
                 percent sulfur by weight.
             2.   After January, 1974, no  person shall sell, distribute,  use
                 or make available for use, any residual  fuel  oil  containing
                 more than  1.75 percent sulfur by  weight.
         SECTION 4
(50.2)       DISTILLATE FUEL OIL
             1.   After January, 1973, no  person shall sell, distribute,  use,
                 or make available for use, any distillate fuel  oil  containing
                 more than  the following  percentages  of sulfur:
                 a)  ASTM Grade 1  fuel oil  - 0.3 percent  by weight
                 b)  ASTM Grade 2 fuel oil  - 0.5 percent  by weight
                                             -41-

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        SECTION 5

(50.2)       COAL
            1.  After January 1, 1973, no person shall sell, distribute, use, or
                make available for use, any coal containing greater than 1.0
                percent sulfur by weight.
                                             -42-

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         J.   REGULATION FOR CONTROL OF FLUORIDE EMISSIONS

         SECTION 1

(2.0)         PURPOSE

             The purpose of this regulation is to prevent the emission of fluorides
             such that the accumulation of fluorine in feed and forage for live-
             stock does not exceed the safe limits specified below.

         SECTION 2

(50.7)        GENERAL RULES

             A.   No person shall allow, suffer, cause or permit the  discharge into
                 the atmosphere of  fluorine,  fluorides, or other fluorine compounds
                 in such quantities that, in  combination with all  other sources
                 of fluorinf, fluorides  or other  fluorine compounds, both of nat-
                 ural  and man-made origins, the total fluoride content in feed and
                 forage exceeds the standards listed in SECTION 12 of the Ambient
                 Air Quality Standards Regulation.

             B.   Compliance with SUBSECTION A of this SECTION will be adjudged upon
                 the results of the continuing program of fluoride sampling  of
                 potential grazing areas  and  alfalfa growing areas conducted by the
                 Department.
                                            -43-

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         K.   REGULATION  FOR  CONTROL  OF  ODORS

         SECTION  1

(2.0)         PURPOSE

             The  purpose of  this  regulation  is  to  control  odorous  emissions  from
             all  sources for which no other  gaseous  emission  control  regulations
             apply.

         SECTION  2

(50.6)        GENERAL  RULES

             A.   No person shall  allow,  suffer,  cause  or  permit  the emission of
                 odorous gases, liquids  or solids  into the atmosphere in  such
                 quantities  as  to cause  air  pollution.

             B.   No person shall  allow,  suffer,  cause  or  permit  any plan  engaged
                 in that processing  of  animal,  mineral, or vegetable  matter  or
                 chemical processes  utilizing animal,  mineral or vegetable mat-
                 ter  to  be operated  without  employing  reasonable measures for
                 the  control  of odorous  emissions  including wet  scrubbers, in-
                 cinerators,  chemicals  or such  other measures as may  be approved
                 by the  Department.
                                              -44-

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         L.   REGULATION  FOR CONTROL  OF  INCINERATORS

         SECTION  1

(2.0)         PURPOSE
             The purpose of this  regulation  is  to  prevent  excessive  emissions
             of particulate matter from  incinerators.

         SECTION 2

(51.9)       GENERAL RULES

             A.  No person  shall  allow,  suffer, cause or permit any  incinerator
                 to discharge more than  0.2  pounds of particulates per 100  pounds
                 of refuse  burned.

             B.  No person  shall  allow,  suffer, cause, or  permit any new domestic,
                 commerical, industrial, or  municipal  incinerator to be installed
                 or operated unless the  installation  and operation complies with
                 the provisions and requirements of the "Multiple-Chamber Incin-
                 erator Design Standards for Los Angeles County" or  unless  such
                 incinerator is found by the Department to be  equally effective
                 for the purpose of air  pollution  control.

         SECTION 3

(2.0)         EXCEPTIONS

             This regulation does not apply  to  wigwam burners.
                                             -45-

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         M.   REGULATION FOR CONTROL OF MOTOR VEHICLE EMISSIONS

         SECTION 1

(2.0)         PURPOSE

             The purpose of this regulation is  to prevent excessive emission from
             motor  vehicles.

         SECTION 2

(12.0)       GENERAL RULES

             A.   No person shall allow, suffer, cause,  or permit the removal,
                 disconnection or disabling of  a crankcase emission control  system
                 or device, exhaust emission control  system or device,  fuel
                 evaporative emission control system or device,  or any  other
                 system or device which has been installed on  a  motor vehicle  in
                 accordance with Federal  Laws and regulations  while such  motor
                 vehicle is operating in  the State.

             B.   No person shall discharge into the  ambient air  any visible  emission
                 from any motor vehicle which is:

                 1.  Darker in shade than smoke designated as  No.  2 on  the Ringel-
                     mann Smoke Chart, or

                 2.  Of such opacity as to obscure an observer's view to  a degree
                     greater than does smoke designated as No.  2 on the Ringelmann
                     Smoke Chart (when used as  a measure of opacity), except that
                     this restriction shall not apply when condensing water  vapor
                     is the only reason for non-compliance.

                     (NOTE:  SECTION 49-835, IDAHO CODE, requires  that  "The  engine
                     and power mechanism of every motor vehicle  shall be  so  equipped
                     and adjusted as to prevent the  escape of  excessive fumes  or
                     smoke.")
                                             -46-

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         N.   REGULATION  FOR  CONTROL OF HOT-MIX ASPHALT PLANTS

         SECTION  1

(2.0)         PURPOSE

             The  purpose of  this  regulation  is to establish for hot-mix asphalt
             plants restrictions  on the emission of particulate matter.

         SECTION  2

(51.8)        GENERAL  RULES

             A.   Permanent Locations

                 No person shall  cause, allow or permit a  hot-mix asphalt  plant
                 which  is intended to be  located in one location or area for an
                 extended period  of time  to  have particulate emissions which ex-
                 ceed the Table of Allowable Rate of  Emissions Based on Process
                 Weight  Rate.

             B.   Temporary Locations

                 1.   No  person shall cause,  allow or  permit any portable hot-mix
                     asphalt plant to be  operated without  a particulate collection
                     system  which shall have a collection  efficiency of at least
                     80  percent.

                 2.   No  person shall cause,  allow or  permit to operate

                     a.   within one-half  (1/2) mile of any structure used  for
                         a residence, campground, or  park,

                     b.   within five (5)  miles of a city limit boundries,  or
                         within the boundaries of an  incorporated city,

                     c.   at  any location  which may cause or create a nuisance or
                         hazard,

                     a  portable hot-mix asphalt plant so that particulate  emissions
                     exceed  the Table of  Allowable Rate of Emissions Based on Pro-
                     cess Weight  Rate.

             C.   Multiple Stacks

                 In the  case of more than one stack to a hot-mix asphalt plant,
                 the  emission limitation  will be based on  the total emission from
                 all  stacks.

             D.   Fugitive Dust Control

                 No person shall  cause, allow or permit a  plant to operate that
                 is not  equipped  with an  efficient fugitive dust control system.
                                              -47-

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The system shall be operated and maintained in such a manner as
to satisfactorily control the emission of participate material
from any point other than the stack outlet.

The owner or operator of the plant shall  maintain fugitive dust
control of the plant premises and plant owned, leased or con-
trolled access roads by paving, oil treatment or other suitable
measures.  Good operating practices, including water spraying
or other suitable measures, shall be employed to prevent dust
generation and atmospheric entrainment during operations such
as stockpiling, screen changing and general maintenance.
                            -48-

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         0.   REGULATION FOR CONTROL OF KRAFT PULPING MILLS

         SECTION 1

(2.0)         PURPOSE

             The purpose of this  regulation is to establish for kraft pulping  mills
             restrictions additional to the general  regulations presented in this
             Chapter;  to formulate a schedule for compliance with the restrictions;
             and to formalize the policy of the Department  concerning emissions
             control from kraft pulping mills.

         SECTION 2

(2.0)         STATEMENT OF POLICY

             It is  hereby declared to be the policy of the  Department to:

             A.  Require, in accordance with a specific program and  timetable,  the
                 highest and best practicable treatment and control  of emissions
                 through the utilization of technically feasible equipment,  de-
                 vices and procedures;

             B.  Require effective monitoring and reporting of emissions and re-
                 porting of other data pertinent to air quality or emissions.
                 The Department will use these data in conjunction with other data
                 on ambient air and local conditions to develop and revise
                 emission standards and air quality standards as necessary,  and
                 to determine compliance therewith.

             C.  Encourage and assist the kraft pulping industry to conduct
                 research and technological development designed to progressively
                 reduce emissions in accordance with specific programs, objectives
                 and time schedules.

             D.  Establish standards deemed to be technically feasible and reason-
                 ably attainable, with the intent of revising the standards  as
                 necessary when new information and technology are developed.

             E.  Establish more restrictive standards for new mills or for mills
                 expanding existing facilities.

         SECTION 3

 (51-14)      GENERAL RULES

             A.  All emission standards in this section are based on average daily
                 emissions.  These limitations do not preclude a requirement to
                 install the highest and best practicable treatment and control
                 available.

             B.  The emission of TRS from all recovery furnace stacks shall  not
                 exceed two pounds of sulfur per ton of equivalent air-dried kraft
                                              -49-

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                 pulp  or,  from  each  recovery  furnace  stack,  seventy ppm expressed
                 as  hydrogen  sulfide on  a  dry basis,  whichever is  the  more re-
                 strictive.   Compliance  shall  be  achieved  by December, 1972.

             C.   The emission of TRS from  all  recovery  furnace stacks  shall  be
                 further  reduced so  as not to exceed  one-half pound of sulfur per
                 equivalent ton of air-dried  kraft  pulp, or  from each  recovery
                 furnace  stack  seventeen  and one-half  ppm,  expressed  as  hydrogen
                 sulfide  on a dry gas basis,  whichever  is  the more restrictive,
                 or  such  other  limit of  TRS that  proves to be reasonably  attainable
                 utilizing the  latest in design of  recovery  furnace equipment,
                 controls, and  procedures.  Compliance  shall  be achieved  by not
                 later than July, 1975.

             D.   Non-condensibles from digesters  and  multiple-effect evaporators
                 shall  be treated to reduce the emission of  TRS equal  to  the
                 reduction achieved  by thermal oxidation in  a lime kiln.   Com-
                 pliance  with this requirement shall  be achieved by not later than
                 July,  1972.

             E.   The emission of particulate  matter from all  recovery  furnace
                 stacks shall not exceed four pounds  per ton of equivalent
                 air-dried kraft pulp.   Compliance  with this requirement  shall
                 be  achieved  by not  later  than July,  1975.

             F.   The emission of particulate  matter from all  lime  kilns shall not
                 exceed one pound per ton  of  equivalent air-dried  kraft pulp.'
                 Compliance with this requirement shall be achieved by not later
                 than  July, 1975.

             6.   The emission of particulate  matter material  from  all  smelt tanks
                 shall  not exceed one-half pound  per  ton of  equivalent air-dried
                 kraft pulp.  Compliance with this  requirement shall be achieved
                 by  not later than July, 1972.

         SECTION 4

(9.0)         MONITORING AND REPORTING
(13.0)
             A.   Every kraft  mill in the State shall  install  equipment for the con-
                 tinuous  monitoring  of TRS.

                 1.  The  monitoring  equipment shall be  capable of  determining com-
                    pliance  with these  standards and shall  be capable of con-
                    tinuous  sampling and  recording of  the concentrations of TRS
                    contaminants during a time interval not greater than thirty
                    minutes.

                 2.  The  sources monitored shall  include,  but are  not  limited to,
                    the  recovery furnace  stacks  and  the lime kiln stacks.
                                             .-50-

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            B.  Each mill  shall  sample  the recovery furnace,  lime kiln, and
                smelt tank for participate emissions on a regularly scheduled
                basis in accordance with its  sampling program as approved' by the
                Department.

            C.  Each mill  shall  submit  within sixty days after effective  date
                of  this regulation a detailed monitoring program and time
                schedule for approval by the  Department.  The equipment shall
                be  ordered within thirty days after the monitoring program
                has been approved in writing  by the Department.  The equipment
                shall be placed  in effective  operation in accordance with the
                approved program within ninety days after delivery.

            D.  Unless otherwise authorized by the Department, data shall be re-
                ported by  each mill at  the end of each calendar month, as follows:

                1.  Daily  average emission of TRS gases expressed in parts per
                    million on a dry gas basis for each source included in the
                    approved monitoring program.

                2.  The number of hours each  day that the emission of TRS gases
                    from each recovery  furnace stack exceeds  emission standards
                    and the maximum concentration of TRS measured each day.

                3.  Emission of  TRS gases in  pounds of sulfur per equivalent air-
                    dried  ton of pulp processed in the kraft  cycle on a monthly
                    basis  for each source included in the approved monitoring
                    program.

                4.  Emission of  particulars  in pounds per  equivalent air-dried
                    ton of pulp  produced in the kraft cycle based upon sampling
                    conducted in accordance with the approved monitoring  program.

                5.  Average daily equivalent  kraft pulp production in air-dried
                    tons.

                6.  Other  emission data as specified in the approved monitoring
                    program.

            E.  Each kraft mill  shall furnish, upon request of the Department,
                such other pertinent data as the Department may require to evaluate
                the mill's emission control program.  Each  mill shall immediately
                report abnormal  mill operations which result  in increased emissions
                of  air contaminants, following procedures set forth in the
                approved monitoring program.
         SECTION 5

(2.0)         SPECIAL STUDIES
             A.   Special  studies,  having  prior approval  of  the  Department,  shall
                 be conducted,  and the  results thereof  submitted  to  the  Department
                 by December,  1972.   The  studies  shall  cover  the  following  areas:
                                             -51-

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                 1.   Evaluation  of the  emissions  of TRS  from  all  other  sources
                     within  the  mill.   Other  sources  means  sources  of odorous
                     sulfur  emissions  including,  but  not limited  to, vents
                     from lime kilns,  knotters, brown stock pulp  washers, multiple-
                     effect  evaporators,  digesters, blow tanks, smelt tanks,
                     blow heat accumulators,  black liquor  storage, black liquor
                     oxidations  systems,  tall  oil recovery  operations,  and any
                     operation connected  with  the handling  of condensate liquids
                     within  the  mill or any vent  which may  be a significant
                     contributor of odorous gases.

                 2.   Evaluation  of the  emissions  of sulfur  dioxide  from all
                     sources within the mill,  including  but not necessarily
                     limited to, the recovery  furnace, lime kiln, and power
                     boilers.

                 3.   Evaluation  of water  vapor emissions from all sources within
                     the mi 11.

             B.   The Department  may require each  such additional  special studies
                 relevant to air pollution and establish completion dates as
                 necessary.
         SECTION  6

(2.0).        EXCEPTIONS
                 The  emission  limits  established under SECTION 3 apply to the
                 specific  process  as  described  in  the SUBSECTIONS of SECTION
                 3.   These emission  limits do not  apply to open burning, power
                 boilers,  or other operations conducted at the site of or
                 ancillary to  the  kraft  pulp mill  operation.  Such ancillary
                 operations must meet standards established in the other
                 Rules  and Regulations.
                                             -52-

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        P.  REGULATION FOR CONTROL OF WIGWAM BURNERS

        SECTION  1

(2.0)        PURPOSE

            The  purpose of this regulation is to reduce, through established de-
            sign and operation criteria,  the emissions of smoke and particulates
            from wigwam burners utilized  for disposal of wood, bark, or other
            plant  fiber.

        SECTION  2

(51.20)      GENERAL RESTRICTIONS

            No person shall  allow, suffer, cause or permit  the discharge of air
            contaminants  into the outdoor atmosphere  from any wigwam burner for
            a period or periods aggregating more than three (3) minutes in any
            one  (1) hour  which is:

            A.   Darker in shade than smoke designated at #1  on the Ringelmann
                 Smoke Chart, or

            B.   Of such opacity as to obscure an observer's view to a degree
                 greater than do emissions designated  as #1  on the Ringelmann
                 Smoke Chart  (when used as a measure of opacity).

        SECTION  3

(2.0)       DESIGN CRITERIA

            After  July 1, 1972, no person shall allow, suffer, cause or permit
            any  wigwam burner to be operated without:

            A.   Keeping a continuous recording of  the stack exit gas temperatures.
                 Such recordings shall include the  operator's name and an explana-
                 tion for  all temperatures below smokeless operation (generally
                 found to  be  700-900°F).   Such records along with a clean out and
                 maintenance  schedule, shall be submitted to the Department of
                 Environmental Protection  and Health at such occasions and
                 frequencies  as requested  from time to time  on an individual
                 or class  basis.

            B.   Proper construction - including:

                 1.  A reasonably airtight shell, including  conveyor door opening.

                 2.  A forced under fire system to  supply sufficient combustion
                    air to all portions of the fuel pile, with individual air
                    outlets  designed to provide maximum diffusion and to
                    minimize plugging ash or clinkers.
                                             -53-

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                 3.  A  forced  over  fire  system of such design  to encourage
                    air  and minimize  particulate fallout.

                 4.  A  top  damper capable of  100% closure.

             In  excessive problem areas  additional measures may be required, in-
             cluding, but not  limited  to, auxiliary fuel, surge bins and automated
             controls in  order to aid  in improving operations  where necessary as
             determined by  repeated violations.
         SECTION  4

(2.0)         EXCEPTIONS
             A.   Small  burners  less  that  25'  in  total height need not measure stack
                 temperature  if they can  continuously demonstrate compliance with
                 Section  2  of this Regulation.

             B.   All  burners  able to demonstrate ability to maintain and operate
                 within the visible  limits described under Section 2 and have no
                 apparent fallout problem need not comply with Section 3B.

             C.   Within one (1)  hour of the start of a new fire or during upset
                 conditions as  described  in Regulation A, Section 5, Compliance
                 with Section 2 of this regulation need not be met.
                                             -54-

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         Q.   REGULATION  FOR  CONTROL  OF  RENDERING  PLANTS

         SECTION  1

(2.0)         PURPOSE

             The  purpose of  this  regulation  is  to establish  for  rendering  plants
             limitations on  the emission  of  odors.

         SECTION  2  .

(51.21)       GENERAL  RESTRICTIONS

             A.   No person shall  allow, suffer, cause, or  permit the operation  or
                 use  of  any  device,  machine,  equipment,  or other contrivance  to
                 cook inedible animal or  marine matter unless  all  gases, vapors,
                 and  gas entrained effluents  from these  processes  are  passed
                 through condensers  to  remove all  steam  and  other condensible
                 materials.   All  non-condensables passing  through  the  condensers
                 must then be incinerated at  1200°:F  for  a  minimum of 0.3 seconds.

             B.   No person shall  allow, suffer, cause, or  permit the installation
                 or operation of  an  expellor unless  it is  properly hooded  and all
                 exhaust gases are ducted to  odor control  equipment.

             C.   No person shall  allow, suffer, cause, or  permit the installation
                 or operation of  a rendering  plant unless  plant  ventilation air
                 is collected and ducted  to  odor  control equipment.

         SECTION  3

(2.0)         EXCEPTIONS

             A.   SUBSECTION  C of  SECTION  2 shall  not apply when  it can be  demon-
                 strated that without ducting plant  ventilation  air to the odor
                 control equipment no   noticeable odors  from the plant can be
                 detected at the  property line.
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         S.   REGULATION FOR CONTROL  OF SULFUR OXIDE  EMISSIONS  FROM COMBINED
             ZINC/LEAD SMELTER OPERATIONS

         SECTION 1

(2.0)         PURPOSE

             The purpose of this  Regulation  is to  establish  a  program whereby
             operators of zinc/lead  smelters  will  take  steps to  immediately
             improve air quality  in  the area  surrounding  such  smelters  and at-
             tain compliance by July 31, 1977 with all  Primary Sulfur Dioxide
             Ambient Air Quality  Standards,  and by July 31,  1978 for the Three-
             Hour Secondary Ambient  Air Quality Standard.

         SECTION 2

(51.11)      Control of Fugitive  Sulfur Dioxide Emissions

             (1)  The owner(s)  or operator(s) of combined  zinc/lead smelters
                  located in the  Eastern Washington  - Northern Idaho Inter-
                  state Air Quality  Control  Region shall  utilize best engi-
                  neering techniques to capture and  vent  fugitive S02 emissions
                  through stack or stacks.   Such techniques  shall  include but
                  not be limited  to:

                  (i)   Maintaining and operating all ducts,  flues, and  stacks
                       in a leak-free condition.

                 (ii)   Maintaining and operating all process equipment  and gas
                       collection systems  in  such  a  fashion  that leakaqe of SO?
                       gases will  be prevented to  the maximum  extent possible.

                (iii)   Wherever possible,  using gas  collection systems  and/or
                       ducting  emissions through the tallest stack or stacks
                       serving  the facility.

             (2)  (i)   Compliance with Paragraph 0)(i) and  (ii)  of this Section
                       shall be achieved as  expeditiously  as practicable but not
                       later than 6  months following date  of adoption of this
                       Regulation.

                 (ii)   The owner(s)  or operator(s) of combined zinc/lead smelters
                       shall submit  to the Director, no later  than thirty (30)
                       days following the  date of  final adoption by the Board of
                       Health and Welfare, a  proposed compliance schedule for
                       compliance with Section 11(1)(iii).   No such compliance
                       schedule may  provide  for final compliance after  July 31, 1977,
                       If approved by the  Director,  such  schedule shall satisfy
                       the requirements of this Paragraph.
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        SECTION 3

(51.11)      Permanent Control of Sulfur Dioxide Emissions

            (1)  The owner(s) or operator(s) of combined zinc/lead smelters
                 in the Eastern Washington - Northern Idaho Interstate Air
                 Quality Control Region shall comply with all the requirements
                 of this Section, except as provided in Section IV of this
                 Regulation.

            (2)  The owner(s) or operator(s) of the combined zinc/lead smelters
                 shall not discharge or cause the discharge of S02 into the at-
               .  mosphere in excess of 1900 pounds per hour - maximum 1 hour
                 average.  Such limitation shall apply to the sum total of S02
                 emissions from the combined zinc/lead smelter premises, but
                 not including uncaptured fugitive emissions and those emissions
                 due solely to use of fuel for space heating or steam generation.
                 Compliance with this Paragraph shall be achieved as expeditiously
                 as practicable but not later than July 31, 1977.

            (3)  The owner(s) or operator(s) of the combined zinc/lead smelter
                 shall provide interim measures of control, including but not
                 limited to, use of existing S02 control system and the applic-
                 ation of supplemental control systems, together with an adequate
                 ambient air and meteorological monitoring network.

            (4)  (i)  The owner(s) or operator(s) of the .combined zinc/lead smelter
                      shall comply with the compliance schedule specified below:

                      (a)  Effective immediately, apply supplemental control systems
                           and other appropriate interim measures to reduce, to
                           the greatest extent practicable, ground level ambient
                           S02 concentrations.

                      (b)  Effective immediately, limit the discharge of S02 into
                           the atmosphere by utilizing to the maximum extent
                           practicable all existing sulfuric acid plant controls
                           for both the lead and zinc plants.

                      (c)  Thirty (30) days after adoption of this Regulation,
                           submit a final plan to the Director for meeting the
                           requirements of Paragraph (2) of this Section.  Such
                           plan shall be subject to approval by the Director.

                      (d)  July 31, 1975 - Limit S02 discharge to a maximum of
                           1200 tons per any consecutive 7 day period (midnight
                           to midnight).  Such limitation shall apply to the sum
                           total of S02 emissions from the combined zinc/lead
                           smelter premises, but not including uncaptured fugitive
                           emissions and those emissions due solely to use of
                           fuel for space heating or steam generation, as
                           measured by the methods specified in Paragraph (6)
                           of this Section.  The procedure used to determine the
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            total  emissions for'a 7 day period shall  be as
            defined in 'Section  IV  (6)(1).

       (e)   Let contracts  or issue  purchase orders  for emission
            control systems and/or  process  modifications by
            July 1, 1975.

       (f)   Initiate on-site construction and/or installation of
            emission control equipment or process change by
            September 1,  1976.

       (g)   Complete on-site construction and/or installation
            of emission control  systems or  process  change by
            July 1, 1977.

       (h)   July 31, 1977  - Achieve final compliance  with the
            requirements  of paragraph  (2) of this Section.

 (ii)   The  owner(s) or operator(s)  of  the combined  zinc/lead smel-
       ter  shall certify  to the  Director within  fifteen (15)
       days after the deadline for  each increment of  progress,
       whether or not the  required  increment of  progress has been
       met.

(iii)   If a performance test is  necessary to determine whether
       compliance has been achieved, such a test must be completed
       by the final compliance dates listed in 111(4)(i).   Notice
       must be given to the Director at least ten days prior to
       such a test to afford him the opportunity to have an
       observer present.

 (iv)   If the owner(s) or  operator(s)  of the combined zinc/lead
       smelter are presently in  compliance  with  the requirements
       of Paragraph (2) of this  Section or  achieve  compliance
       prior to July 31,  1977, such compliance shall  be
       to the Director within thirty (30) days following the date
       of adoption of these requirements as a final Regulation
       by the Board of Health and Welfare or within thirty (30)
       days of achieving  compliance.   If such certification is
       acceptable to the  Director,  the applicable requirements of
       this Paragraph shall not  apply  to the certified sources.
       The  Director may request  whatever supporting information
       he considers necessary to determine  the validity of the
       certification.

  (v)   The  owner(s) or operator(s)  of  the combined  zinc/lead
       smelter may submit  to the Director,  no later than thirty
       (30) days following the date of adoption  of  these require-
       ments as a final Regulation  by  the Board  of  Health and
       Welfare, a proposed alternate compliance  schedule.   No
       such compliance schedule  may provide for  final compliance
       after July 31, 19//.  if  approved by the  Director, such
       schedule shall satisfy the compliance schedule requirements
       of this Paragraph.

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(5)   The owner(s)  or operator(s)  of the combined zinc/lead smelter
     shall  install,  calibrate,  maintain and operate measurement
     system(s)  for continuously monitoring and recording  S02 emission
     rates  in each stack capable  of emitting greater than 50 tons
     S02/ year.

     (i) These measurement system(s)  shall be demonstrated in
         accordance with the specification test procedures prescribed
         by the Director.

    (ii) These measurement system(s)  installed and used  pursuant  to
         this  Paragraph shall  be maintained, operated and calibrated
          in accordance with the  methods prescribed by the manufacturers.
          Records  of maintenance  and/or calibration shall be kept
         and submitted to the Director upon request.   These records
          shall  clearly show instrument readings before and after
          such  calibration and/or maintenance.

   (iii) The owner(s) or operator(s)  of the combined zinc/lead
          smelter shall maintain  a record of all measurements re-
         quired by this Paragraph.  For each day, beginning at
         midnight,  one hour average SC>2 emission rates shall be
          calculated per the method specified in Paragraph (6) of
          this  Section.  The reuslts of these calculations for each
         month shall be submitted to the Director within 15 days
          following the end of each month.  The records of such
         measurements shall be retained for a minimum of two years
          following the date of such measurements.

    (iv) The continous monitoring and record keeping requirements
          of this  Paragraph shall becom applicable nine months
          following the date of adoption of these requirements as
          a final  Regulation by the Board of Health and Welfare.

(6)   Compliance with the requirements set forth in Paragraph (2)
     of this Section shall be determined using the continuous
     measurement system (s)  installed, calibrated, maintained
     and operated in accordance with the requirements of Paragraph
     (5) of this Section.

     (i)  For each stack equipped with the measurement systems re-
          quired by Paragraph (5) of this Section, one-hour average
          S02 emission rates shall be calculated as follows:

          (a)  Determine S02 concentration and stack gas  flow rate
               measurements for each one-hour period.   These measure-
               ments may be obtained either by continuous integration
               of S02 concentrations and stack gas flow rate measure-
               ments recorded during the one-hour period or from
               the arithmetic  averaged .of any reasonable number of
               of S02 concentrations and stack gas flow rate measure-
               ments.  These measurements shall be taken for each
                                 -59-

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                 (11)
     one-hour period and shall be similarly spaced within
     each one-hour period.

(b)  For the one-hour period, calculate the arithmetic
     average S02 emission rate (expressed in Ibs. S02/hour
     for each stack).  Total the average S0Ł emission
     rates for all stacks.

A violation of the requirements of Paragraph III (2) shall
occur whenever the total SOg emission rate for a one-hour
period calculated per Paragraph (6)(i)(b) of this Section
exceeds the S02 emission rate specified in Paragraph (2)
of this Section.
         SECTION  4
(51.11)       Alternate  Control  of  Sulfur  Dioxide  Emission

             (1)   The owner(s)  or  operator(s)  of  any  combined  zinc/lead  smelters
                  located  in  the Eastern  Washington - Northern Idaho Intrastate
                  Air Quality Control  Region may  apply to  the  Director for
                  approval  to meet the requirements of this  Section.  Upon  such
                  approval, granted pursuant to Paragraph  (3)  of  this Section,
                  the requirements of  Section  III  shall  not  be applicable and
                  all requirements of  this  Section shall apply during the period
                  of such  approval.

             (2)   All terms used in this  Section  but  not specifically defined
                  below shall have the meaning given  them  in Regulation  A.

                  (i)   The term "supplementary control system" (hereinafter
                       referred to as  SCS)  means  any  system  which limits the
                       amount of pollutant  emissions  during  periods when meteor-
                       ological conditions  conducive  to  ground-level concentrations
                       in  excess of national ambient  air quality  standards  for S02
                       exist  or are anticipated.

                 (ii)   The term "isolated source" means  a  source  that can and will
                       assume legal  responsibility for all violations of any
                       applicable  standards in its designated  liability  area,
                       as  specified in Paragraph  (10) of this  Section.

             (3)   (i)   The application for  permission to comply with this Section
                       shall  be submitted to the  Director  no later than  15  days
                       following the date of adoption of these requirements as
                       a final  Regulation by the  Board of  Health  and Welfare and
                       shall  include the  following:

                       (a)  A short description of the type  and location of the
                           combined zinc/lead smelter complex; the processes,
                           equipment, raw  materials  and fuel  used; the  stacks
                           employed;  and emissions to the atmosphere from
                           various points  on  the combined zinc/lead smelter premises.
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(b)   A general  description of the topography and the
     location of the combined zinc/lead smelter and of any
     other SOo  sources  within the vicinity of the combined
     zinc/Teaa  smelter  as  well  as a program of study
     which will  determine  what effect these sources may
     have on ambient air quality.

(c)   A summary  of any ambient air quality data collected
     in the vicinity of the combined zinc/lead smelter
     that the owner or  operator may have.

(d)   A description of the  methods of constant emission
     reduction  that are or will be applied and the degree
     of emission reduction and the dates for such reduc-
     tion which are achieved or expected to be achieved
     due to their application.

(e)   A description of the  investigations that the owner or
     operator has made, and the result thereof, as to
     the availability of constant emission reduction
     methods and a discussion of the reasons why any
     potential  available methods cannot reasonably be
     used.

(f)   A specific description of the research, investigations,
     or demonstrations  that the owner or operator will
     conduct or support for the purpose of developing con-
     stant emission reduction technology applicable to the
     combined zinc/lead smelter.  Such description shall
     include the resources to be committed and qualifi-
     cations of the participants and a description of
     the facilities to  be  utilized.

(g)   A description of the  other measures the owner or oper-
     ator will  apply, in addition to those described
     in IV(3)(i)(d), to provide for attainment and main-
     tenance of national ambient air quality standards.
     In addition to supplementary control  systems, such
     measures may include  but not be limited to tall stacks;
     permanent production  curtailment; and/or process
     changes.

(h)   A demonstration that  the combined zinc/lead smelter
     complex qualifies  as  an isolated source.

(i)   A demonstration to the satisfaction of the Director
     that the Company will accept responsibility for any
     violation of the 24-hour ambient air quality stand-
     ard for S02 that occurs after July 31, 1977, the
     primary annual ambient air quality standard for SOo
     after July 31, 1977,  as well as the three-hour
     ambient, air quality standard for SC^ after July 31, 1978
     in the designated  liability area.
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     The owner(s)  or operator(s)  of the combined zinc/lead
     smelter shall  also demonstrate to the satisfaction of
     the Director  that the Company will  accept responsibility
     for violating ambient air concentrations  exceeding
     those designated in Figure I  for the time period
     beginning  July 31, 1975 through July 31,  1977.   The
     "Annual  Production Rate"  in  Figure I is defined as
     the total  production of soft  lead in the  preceding 12
     month period.   Should the blast furnace and sinter
     machine be shut down simultaneously for N number of
     days (Where N equals five or  more consecutive days),
     then the "Annual Production  Rate" shall be defined
     as:

     (Total  production of soft lead in preceding 12  month
     period)  x   356
               365-N

     The "Annual Average Sinter Production Rate" in  Figure
     I  is defined  as the total production of sinter in the
     preceding  12  month period, divided by the total  oper-
     ating time of the sinter machine during that same 12
     month period.   At the end of  each month,  a new  "Annual
     Production Rate" and an "Annual  Average Sinter  Production
     Rate" shall be calculated by  the owner(s) or operator(s)
     of the combined zinc/lead smelter.   These calculations
     shall be included in the monthly report that is sub-
     mitted to  the Director pursuant to Section IV(12)(i)(c).
     The new production rate figures shall be  used to det-
     ermine what ambient air concentration limit must be
     met during the following month.   The new  limits shall
     go into effect on the 15th of each month  and continue
     through the 14th of the following month.   This  monthly
     review of  the production rates shall constitute a
     change to  the operating manual if a different level
     of ambient air concentration  is specified by Figure I.

(j)   The owner(s)  or operator(s) of the combined zinc/lead
     smelter shall  indicate that  they will:

     (i)  Immediately begin to test a supplementary  control
          system to determine the  effectiveness of the
          system to meet the 24-hour standards defined in
          IV
    (ii)   Immediately prepare to conduct a  test program
          beginning no later than January 21,  1975  and
          ending no earlier than May 21, 1975.

   (iii)   Submit, as a minimum,  a report summarizing  re-
          sults obtained from the testing program during
          the period of January  21,  1975 to May 21, 1975.
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                    Such  report  shall  be  submitted  to  the  Dir-
                    ector no  later than June  1,  1975.

              (iv)   Such  report  shall  evaluate  the  reliability  of
                    the plan  submitted pursuant  to  Paragraph  (9)
                    of this Section and designate the  appropriate
                    changes to  this plan  to ensure  achievement  of
                    ambient air  quality standards as  specified  in
                    subparagraph  (3)(i)(i), above.

          (k)   Such other pertinent information  as  the Director
               may  require.

(3)  (ii)   Upon receipt of the information specified in Section  IV
          (3)(i), and a determination  of  its  adequacy, the Director
          may  after 30 days notice, conduct a Public  Hearing  on the
          application submitted  by the owner(s)  or  operators(s).
          The  Director shall  make available to  the  public, the  inform-
          ation contained in  the application  and his  preliminary
          evaluation and  findings thereon.  Within  30  days after
          receipt of the  information or after a  hearing, the  Director
          will notify the owner(s) or  operator(s) of  the zinc/lead
          smelter and other interested parties  of his  decision  as to
          whether to grant or deny the application.   If denied, he
          will set  forth  his  reasons and  shall  specify that Section
          III  is applicable.   If the application is approved, the
          owner or  operator shall comply  with all the  provisions.
          of this Section of  this Regulation  and need  not  comply
          with the  provisions of Section  III  of this  Regulation
          except as specified in Section  IV,  Paragraph 15  of  this
          Regulation.

(8)   The owner(s) or operator(s)  of the combined zinc/lead smelter,
     in meeting the requirements of Paragraph (4) of  this  Section,
     shall employ SCS and such  other additional  control measures  as
     may be necessary to  assure  the attainment  and  maintenance  of
     ambient air quality  standards for S02 by the dates set forth
     in Paragraph  (3)(i)(i) of this Section.

     (i)   In addition to  SCS, such measures may  include, but  not
          limited to, the following techniques:   process changes;
          tall stacks; production reduction;  or any other  tech-
          niques approved by  the Director.

    (ii)   S0Ł  emission shall  be  curtailed in  accordance with  the
          operating manual whenever the potential for  violating
          any ambient air quality standard for  S02  (as specified
          in Paragraph (3)(i)(i)  of this  Section) is  indicated  at
          any point in a  designated liability area  by  air  quality
          measurements and/or air quality predictions.
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(9)   The owner(s)  or operator(s)  of the combined zinc/lead smelter
     shall  submit  to the Director,  no later than January 21,  1975,
     a plan for implementing  SCS.   Such plan shall  be subject to
     the Director's  approval  and,  as a minimum shall:

     (i)  Describe and substantiate the emission monitoring system
          and the  air quality monitoring network that will  be used
          in the SCS.

    (ii)  Describe and substantiate the meteorological  sensing net-
          work and the meteorological  prediction program that will
          be used  in the SCS.

   (iii)  Identify the frequency,  characteristics,  times of occurrence
          and durations of meteorological  conditions  associated with
          high ground-level  ambient concentrations.

    (iv)  Describe the methodology  (e.g.,  dispersion  modeling and
          measured air quality data) by which the source determines
          the degree of control  needed under each meteorological
          situation.

     (v)  Describe the methods chosen to vary the emission  rate,  the
          basis for the choice,  and the time required to effect a
          sufficient reduction in  the emission rate to avoid  violations
          of ambient air quality standards as specified in  Paragraph
          (3)(i)(i)  of this Section.

    (vi)  Contain  an estimate of the frequency that emission  rate
          reduction  is required  to  prevent ambient  air quality stand-
          ards (as defined in Paragraph (3)(i)(i) of  this Section)
          from being exceeded and  the basis for the above estimate.

   (vii)  Include  data and available  results  from objective  reliability
          tests.  "Reliability"  as  the term is applied here,  refers
          to the ability of the  supplementary control system  to pro-
          tect against violations of the ambient air  quality  standards
          specified  in Paragraph (3)(i)(i) of this  Section.

  (viii)  Describe a program  whereby the owner(s) or  operator(s)  system-
          atically  evaluates and  improves the reliability  of the
          supplementary control  system.

    (ix)  Identify a responsible and knowledgeable  person (and alter-
          natives) on site who is authorized to curtail  emission  and
          a person who can apprise  the Director as  to the status  of
          the supplementary control  system at any time.

     (x)  Declare  that the owner(s)  or operator(s)  assumes  responsibility
          by the dates specified in Paragraph (3)(i)(i)  of  this
          Section  for all  ground-level ambient sulfur dioxide concen-
          trations which exceed  the ambient air quality standards
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           specified in Paragraph  (3)(i)(i)  of this  Section  in
           the designated liability area defined in  Paragraph  (10)
           of this  Section.

     (xi)   Include  an affidavit signed by a  responsible company
           official  stating  that the owner(s)  or operator(s) of the
           combined zinc/lead smelter will  accept responsiblity for
           any violation of  the SO? ambient  air quality standards  as
           specified in Paragraph  (3)(i)(i)  of this  Section  in  the
           designated liability area.

(10)   (i)   For the  purpose of this Section,  the designated liability
           area shall be a circle  with a radius of 10 statute miles
           (16 kilometers) with the center point of  such circle
           coinciding with the main stack serving the zinc plant.
           The owner(s) or operator(s) of the  combined zinc/lead
           smelter  may submit a detailed report which justifies re-
           defining the designated liability with the application
           submitted pursuant to Paragraph (3) of this Section  and
           describe and delineate  the recommended designated  liability
           area and discuss  in detail the method used and the  factors
           taken into account in the development of  such area.   Upon
           receipt  and evaluation  of such report, the Director  shall
           issue his final determination on  the extent of the de-
           signated liability area.

     (ii)   If new information becomes available which demonstrates
           that the designated liability area  should be redefined,
           the Director shall consider such  information and  if  appro-
           priate,  redefine  the designated liability area.

(11)   The owner(s)  or operator(s)  of the combined zinc/lead  smelter
      shall submit  to the Director an operational manual for  SCS.
      Such manual shall be submitted no later  than June 1, 1975 and
      is subject to the approval of the Director.  ''Such a manual  shall:"

      (i)   Specify  the number, type, and location of ambient  air quality
           monitors, in-stack monitors and meteorological instruments
           to be used.

     (ii)   Describe techniques, methods, and criteria used to anticipate
           the onset of meteorological situations associated with  ground-
           level concentrations in excess of national ambient  air
           quality  standards defined in Figure I, and to systematically
           evaluate and, as  needed, improve  the reliability  of  the
           supplementary control systeni.

    (iii)   Describe the criteria and procedures that will be  used  to
           determine the degree of control  needed for each class of
           meteorological and air quality situation.
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     (iv)   Identify the frequency,  characteristics,  times  of occurrence
           and duration of meteorlogical  conditions  associated with
           probable high ground-level  ambient  concentrations.   Describe
           the methodology by which the  source determines  the  degree
           of control  needed  under  each  meteorological  situation,
           specifically the maximum emission rates which may prevail
           under each  of these meteorological  and air quality  situations
           in order to prevent a  violation  of  an  ambient air quality
           standard, as defined by  Paragraph (3)(i)(i)  of  this Section,
           in the designated  liability area.   Such emission  rates  shall
           be determined by in-stack monitors  and shall be the basis
           for determining whether  provisions  of  the approved  operational
           manual are  adhered to.

      (v)   Describe specific  actions that will be taken to adjust
           emission rates to  those  levels specified  per the  requirements
           of Section  4 (ll)(iv).

     (vi)   Identify the company personnel responsible for  initiating
           and supervising the actions that will  be  taken  to curtail
           emissions.   Such personnel  must  be  responsible, knowledgeable
           and able to apprise the  Director as to the status of the
           supplementary control  system  at  any time  the source is
           operating.

    (vii)   Be modified, subject to  approval by the Director, upon  re-
           quest of the owner or  operator of the  smelter or, after
           appropriate negotiation, by the  Director.

(12)   (i)   The owner(s) or operator(s) of the  combined  zinc/lead smelter
           shall:

           (a)  Maintain, in  a useable manner, records  of  all  measure-
                ments  and reports prepared  as  part of the  approved
                supplemental  control system.   Such reports shall be re-
                tained for at  least two years.

           (b)  Submit to the Director,  on  a monthly basis,  all  hourly
                measurements  made of air quality  and all other requested
                measurements  that are  a  part of the  approved supplement-
                ary control system. These  reporting requirements  are
                in addition to those specified in Paragraph  (7)  of
                this Section.

           (c)  Submit to the Director a monthly  summary report des-
                cribing and analyzing  how the  SCS operated as  related
                to the SCS approved by the  Director.   Such report
                shall  describe how  the system  will be improved,  if
                necessary, to prevent  violations  of  the ambient air
                quality standards as defined by Paragraph  (3)(i)(i)
                of this Section for S02  or  to  prevent any  other con-
                ditions which are not  in accordance  with the SCS
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                approved  by  the  Director.   Such  report  shall  include
                a  monthly summary  indicating  all  dates  and  times  when
                an ambient air quality  standard  for  S02 was  exceeded
                (as defined  by Paragraph  (3)(i)(i) of this  Section)
                and the  concentration of  S02  at  such times  when  SCS
                was not  operated in  accordance with  the operating
                manual.

     (ii)   The requirements  of this  Paragraph shall  become  applicable
           nine months after the date of  adoption of these  requirements
           as a final  Regulation by  the Board of Health and Welfare.

(13)   (i)   The owner(s)  or operator(s)  of the combined  zinc/lead  smel-
           ter shall document and  submit  to the  Director no later
           than 180 days  following the  date of adoption of  these  re-
           quirements  as  a final Regulation by the Board of Health
           and Welfare,  a detailed description of the company's  re-
           search  and  demonstration  program or its participation  in
           such program,  to  develop  and apply appropriate permanent
           emission reduction technology  capable of  limiting S02
           emission rates to 1900  Ibs/hour.  Such description must
           include schedules and resources to be committed,  and  the
           earliest anticipated  dates when adequate  emission reduction
           technology  can be applied to the source.

     (ii)   The owner(s)  or operator(s)  of the combined  zinc/lead
           smelter shall  submit  annual  reports on the progress of
           the research  and  development program  required by this
           Paragraph.  Each  report shall  include, but not be limited
           to, a description of  the  projects  underway,  information
           on the  qualification  of the  personnel  involved,  information
           on the  funds  and  manpower that have been  committed, and
           an estimated  date for the installation of the constant
           emission reduction technology  necessary to attain and
           maintain the  primary  and  secondary national  ambient air
           quality standards.

(14)   (i)   The Director  shall annually  review the SCS and shall  deny
           continued use of  Section  4 of  this Regulation if he
           determines  that:

           (a)  The owner(s) or  operator(s) of the combined zinc/lead
                smelter  fail to:  Utilize  an adequate  number of
               . trained  competent personnel as specified in the  oper-
                ating  manual; or maintain, operate,  and calibrate the
                monitoring equipment properly; or refine and con-
                tinuously validate and  upgrade the response of the
                SCS to adverse dispersion conditions as may be nec-
                essary to prevent violations  of  ambient air quality
                standards as defined by  Paragraph (3)(i)(i)  of  this
                Section;  or  reduce the  emission  rate in accordance
                with stipulated  control criteria in  the approved
                                 -67-

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                operational  manual  in  order to  prevent violations
                of the ambient air  quality standards  for $02;  or
                submit all  information required by this Section.

           (b)   The Director determines that the review indicates
                that permanent emission control  technology has be-
                come available, that continued  relative isolation of
                the facility has changed,  or that other factors
                which may bear on the  conditions for  use of an SCS
                have changed to the extent that continued use  of the
                SCS would no longer be deemed approvable within the
                intent of Paragraph (3) of this Section; or

           (c)   The owner(s) or operator(s)  of  the combined zinc/
                lead smelter have not  demonstrated good faith  efforts
                to follow the stated program for developing constant
                emission  reduction  procedures;  or

           (d)   The owner(s) or operator(s)  of  the combined zinc/
                lead smelter have not  adhered to the  requirements
                of any applicable compliance schedule developed
                pursuant  to  this Regulation; or

           (e)   The owner(s) or operator(s)  of  the combined zinc/
                lead smelter have not  developed and employed a con-
                trol program that is effective  in preventing violations
                of the ambient air  quality standards  as defined by
                Paragraph (3)(i)(i) of this  Section.

     (ii)   Prior to denying  the continued  use of a SCS pursuant to sub-
           paragraph (i)  of  this Paragraph,  the Director shall  notify
           the  owner(s) or operator(s) of  the combined zinc/lead  smel-
           ter  of his -intent to deny continued  use, together with:

           (a)   The information and findings on which such intended
                denial is based, and

           (b)   Notice of opportunity  for  such  owner(s) or operator(s)
                to present within 30 days, additional  information or
                arguments to the Director  prior of his final
                determination.

    (iii)   The  Director shall  make  his final  determination known  in
           not  more than  60  days or less than 30 days after he has
           sent notification of intent to  deny  the continued use  of
           an SCS pursuant to subparagraph (ii)  of this Paragraph.
           If the continued  use of  the SCS is denied,  the final
           determination  shall  set  forth the specific grounds  for such
           denial.

(15)   Upon denial of the  use of a SCS  pursuant  to Paragraph (14)  of
      this Section, all the  requirements of  Section 3 of this  Regulation
                                  -68-

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      shall  be  immediately  applicable  to  the  owner(s)  or  operator(s)
      of the combined  zinc/lead  smelter and compliance therewith  shall
      be achieved in  such  reasonable  times as the  Director  shall
      prescribe.

(16)   (i)  The  owner(s)  or  operator(s)  of the combined zinc/lead
           smelter shall comply  with  the  compliance  schedule  specified
           below  for  implementing  the  requirements of  this  Section.

           (a)  Effective  immediately,  limit  the discharge  of S02 into
               the atmosphere by  utilizing to the maximum  extent
               practicable all  existing  sulfuric  acid plant  controls
               for both the lead  and  zinc plants.

           (b)  Within 15  days following  the  date  of adoption of  these
               requirements as a final  Regulation  by the  Board of Health
               and Welfare, submit to  the Director  an application
               for permission to  comply  in accordance with Paragraph
                (3) of this Section.

           (c)  By January  21, 1975,  submit to the Director,  a detailed
               plan  for establishment  and implementation of  the
               supplementary control  system  in accordance  with Para-
               graph  (9)  of this  Section.

           (d)  June  1,  1975 - Submit  to  the  Director  the comprehensive
               test  report on the supplementary control  system re-
               quired by  Paragraph (3)(i)(.i) of this  Section.

           (e)  By June  1,  1975  -  Let  contracts or issue  purchase
               orders for any stack  extensions, emission and ambient
               air quality monitors,  meteorological instruments,
               and other  component parts necessary  to complete the
                supplementary control  system.

           (f)  June  1,  1975 - Submit  to  the  Director  for his approval,
                the operational  manual  required by Paragraph  (11) of
                this  Section.

           (g)  By June  1,  1975  -  Complete installation of  air quality
               and emission monitors  and meteorological equipment
               necessary  to complete  the SCS.

           (h)  July  31, 1975 -  Achieve compliance with the emission
                limitation  requirements of Paragraph (4)  of this  Section.

           (i)  July  31, 1975 -  Certify measurement  systems and commence
                reporting  as required  by  Paragraphs  (7) and (12)  of this
                Section.

           (j)  July  31, 1975 -  Assume  responsibility  for all violations
               of the ambient air quality standards as defined by
                Figure I in the  designated liability area.
                                   -69-

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       (k)   July 31,  1977 -  Assume responsibility for all  viola-
            tions of  the 24-hour primary air quality standard
            for sulfur dioxide in the designated  liability area.

       (1)   July 31,  1978 -  Assume responsibility for all  viola-
            tions of  the three-hour secondary ambient air quality
            standard  for sulfur dioxide in  the designated
            liability area.

       (m)   July 31,  1977 -  Assume responsibility for all  viola-
            tions of  the annual  primary ambient air quality stand-
            ard for sulfur dioxide in the designated liability
            area.

 (ii)   The  owner(s) or operator(s) of the combined zinc/lead
       smelter shall  certify to the Director within (15) days
       after the deadline for each increment of progress,  whether
       or not the required increment of progress  has been  met.

(iii)   If a performance test is deemed necessary  by the  Director
       in order to determine whether compliance has been achieved,
       such a test must be completed by the final  compliance date
       in the applicable compliance schedule.  Notice must be giver
       to the Director at least ten days prior to such a test to
       afford him the opportunity to have an observer present.

 (iv)   If the owner(s) or operator(s) of the combined zinc/lead
       smelter are presently in compliance  with any of the increments
       of progress set forth in the Paragraph such owner(s)  or
       operator(s) shall certify such compliance  to the  Director
       within 30 days of the effective date of this Section.   The
       Director may request  whatever supporting information  he
       considers necessary to determine the validity of  the
       certification.

  (v)   The  owner(s) or operator(s) of the combined zinc/lead smel-
       ter  may submit to the Director, a proposed alternative com-
       pliance schedule.  Each such  proposed compliance schedule
       shall be submitted with the application submitted  pursuant
       to Paragraph (3)(i) of this Section.   No such compliance
       schedule may provide  for final compliance  after July  31,  1977.
       If approved by the Director, such schedule shall  replace
       the  compliance schedule set forth in this  Paragraph.

 (vi)   If,  in the opinion of the Director,  any promulgated or ap-
       proved alternate compliance schedule or increment of  pro-
       gress is not appropriate for effectively supervising  pro-
       gress toward final compliance by the combined zinc/lead
       smelter, he may prescribe other such schedules and  increments.
                              -7u-

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       Line A:   Y = (X x  1000)  x (2.94) -:- (6008  hrs)  for 105  
o  m
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            X = ANNUAL PRODUCTION  RATE OF SOFT CAST  LEAD IN THOUSANDS TONS

                   (One ton of  soft cast lead = 2.94  tons  sinter)

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         T.   AIR POLLUTION SOURCE PERMITS

         LEGAL AUTHORITY

         Pursuant to authority granted in Section  39-115,  Idaho  Code,  the Board
         of Environmental  and Community Services hereby adopts  the following
         Regulation for issuing Air Pollution Source Permits;  and declares the
         effective date of this Regulation to be July 1,  1974.

         SECTION 1

(1.0)         DEFINITIONS

             EEE  Permitee - any person or other legal  entity  which  is  legally
                  responsible for a source of air  contamination  of the  atmosphere.

             FFF  Air Pollution Source Permit - a  final order  issued by the
                  Department which contains specific emission  limits and standards
                  for a source in accordance with  environmental  laws,  rules,
                  regulations, and standards of the  State  of Idaho.

             GGG  Board -  Idaho Board of Health and  Welfare.

             HHH  Director - the Director of the Department  of Health  and Welfare.

             Ill  Notice - defined by Idaho Code.

             JJJ  Department - Idaho Department of Health  and  Welfare.

         SECTION 2  •

(2.0)

             The purpose of this regulation is to  establish  uniform  procedures for
             obtaining an  Air Pollution Source Permit.  The  Air  Pollution Source
             Permit establishes specific standards and  limits  prescribing the  type
             and quantity  of air contaminant a Source is  allowed to  emit into
             the atmosphere.  These limits shall be  consistent with  all  applicable
             regulations,  or may be more restrictive should  source density or
             other physical conditions require such  action.  This Permit shall
             provide, where appropriate, an interim  schedule of  compliance for
             those sources which may not be in compliance  at the time  of issuance.

         SECTION 3

(3.0)        PROCEDURE FOR ISSUING PERMIT

             A.  When the  Director believes that any source  is emitting or dis-
                 charging  any air contaminant for  which an environmental  statute,
                 rule, regulation or standard applies,  he  may:
                                            -72-

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1.   Send a notification,  by Registered Mail,  to the permittee of
    that source.

    a.   The notification  shall  state the applicable statute,  rule,
        regulation or standard  with which the source must be  in
        compliance and,

    b.   State that a hearing will  be set, if requested by the
        permittee within  10 days of receipt of the notification,
        to consider the  applicability of any standards or limits
        set by the Permit, and

    c.   Said notification shall state emission limits and any
        required action,  with corresponding dates, which must
        be taken by the  source  in  order to achieve or main-
        tain compliance with all statutes, rules,  regulations
        or standards.

    d.   In the event the  permittee does not request a hearing
        as provided above and the  Department does  not wish
        to hold a hearing, then 30 days after receipt of said
        notification, the proposed air pollution source permit
        becomes the final air pollution, source permit and shall
        operate as a final order by the Department.

    e.   If a hearing is  held, the  Director will render a final
        decision upon the Permit within 30 days after the
        hearing.   At this time, the Director may adopt the en-
        tire Permit as originally  proposed, and part thereof,
        or a modified Permit.

2.   The Director may amend the  Air Pollution Source Permit after
    issuance to require more restrictive limitations in the
    event violations continue to exist or more restrictive stand-
    ards are promulgated  by the Board.  Amendments shall be made
    consistent with procedures  established in Section 3. A. 1.
    of these regulations.

3.   In the event a permittee cannot meet the requirements of
    this Permit and the  permittee  shows a good faith attempt  to
    comply, the Director  may, at his sole discretion, adjust
    the Permit as the equities  of  the case indicate; provided
    however, that the permittee's  lack of financial resources
    alone shall not be sufficient  reason to adjust any action
    or limitation.  This  will be done in accordance with the
    variance procedure outlined in Regulation A, Section 6.

4.   The period of time during which the permit applies shall
    be determined by the  Director  and shall appear on the notice.

5.   When a single site includes more than one source of air
    contaminant, a single Permit may be issued including all
                             -73-

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    sources located at the site.   Such Permit shall  separately
    identify  each air contaminant source to which the Permit
    applies.  When a single  air contaminant source  which is in-
    cluded in a multiple-source permit is subject to permit
    modification, revocation, suspension or denial,  such action
    by the Department shall only affect that individual  source
    without thereby affecting any other source subject to that
    permit.

6.  No person shall construct, install, establish, modify or
    enlarge any air contaminant source or facilities for control-
    ling, treating, or otherwise limiting air contaminant
    emissions from air contaminant sources listed in the Air
    Pollution Source Permit without notifying the Department
    as required by Regulation A,  Section 3-B, Rules  and Reg-
    ulations for the Control of Air Pollution in Idaho.

7.  The procedure for issuing an  Air Pollution Source Permit
    shall be consistent with that described in the Administrative
    Procedure Act for a contested case and the permittee shall
    be accorded all applicable rights.

8.  An Air Pollution Source Permit when issued and effective
    shall become a final order of the Department and be enforce-
    able in the Courts of Law of the State of Idaho  without further
    administrative proceeding.  Whenever an Air Pollution Source
    Permit becomes a final order of the Department,  the permittee
    shall operate solely within the terms of the permit.  Any
    non-conforming activity shall constitute a violation of the
    permit and shall be subject to appropriate civil and crim-
    inal sanctions available to the Department.

9.  The  permittee shall provide any and all information requested
    by the Department to prepare the terms of the permit.  Failure
    to provide requested information or falsification that
    information shall constitute a violation of these regulations
    and shall be punishable by appropriate criminal  or civil
    sanctions.
                            -74-

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FEDERALLY PROMULGATED



    REGULATIONS
          -75-

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(50.2)    52.675  Control  Strategy:   Sulfur oxides—Eastern Idaho Intrastate Air
                 Quality  Control  Region.

             (a)   Regulation R of the Rules and Regulations  for the Control of
                  Air Pollution in  Idaho,  which is  part  of the sulfur dioxide
                  (S02) control strategy,  is disapproved since it is incon-
                  sistent with the  purposes and provisions of 51.13.  These
                  requirements are  not met by Regulation R in that the SC^  na-
                  tional  ambient  air quality standards  (NAAQS).

             (b)   Regulation for  control  of sulfur  dioxide (SC^) emissions:
                  Sulfuric Acid Plants.

                  (1) The provisions of  this paragraph  shall apply to the  owner(s)
                      and operator(s) of The J.  R.  Simplot  Company's Minerals and
                      Chemical Division,  located in Power County, Idaho,  in the
                      Eastern Idaho Intrastate Air  Quality  Control  Region.

                  (2) The owner(s)  or operator(s) of The J.  R.  Simplot Company
                      facility shall utilize best engineering techniques  in
                      the operation of their plant  to prevent fugitive S02
                      losses. Such  techniques shall  include but are not limited
                      to:

                       (i)  Operating and  maintaining all  conduits,  flues,  and
                            stacks  in a leakfree  condition.

                      (ii)  Operating and  maintaining all  process  equipment and
                            gas in  such a  fashion that leakage of  S02 gases will
                            be prevented  to the maximum  extent possible.

                  (3) The owner(s)  and operator(s)  of The J. R.  Simplot Company
                      facility shall limit SO? emissions from their sulfuric
                      acid plants  per the following:

                       (i)  The combined  SO? emissions from  the designated  #100
                            and #200 sulfuric acid  plants shall  not exceed  2
                            kilograms (kg) per metric ton (4 pounds per ton)
                            of 100  percent sulfuric  acid produced.

                      (i1)  The S02  emissions from  the designated #300 sulfuric
                            acid  plant and stack  shall not exceed 994 kg per hour
                            (2190 pounds  per hour).

                  (4)  (i)  The owner (s)  and operator(s) of  The J. R. Simplot
                            Company shall  achieve compliance with the require-
                            ments specified in paragraphs (b)(2) and (b)(3) of
                            this  section  in accordance with  the following
                            schedule:

                            (A)  Advise EPA as to status of  contract(s) and
                                 construction schedules  for  pollution abatement
                                             -76-

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               projects within 30 days of  the effective date
               of  this regulation.

          (B)   Attain final  compliance by  July  31,  1976.

    (ii)   A  performance test of  the #300 acid plant shall  be
          necessary  to determine whether compliance has been
          achieved with the  requirements of paragraph (b)(3)
          of this  section.   Such test must be completed within
          15 days  of the  final compliance  date  specified  in
          paragraph  (b)(4)(i) of this section.   Notice must be
          given to the Administrator at least 10 days prior
          to such  a  test  to  afford him an  opportunity to  have
          an observer present.

   (iii)   Within 60  days  after achieving the maximum production
          rate  at  which the  #100 and #200  acid  plant will  be
          operated,  but not  later than 180 days  after initial
          start-up of these  plants and at  such  other times as
          may be required by the Administrator  under Section
          114 of the Clean Air Act, the owner(s)  and operator(s)
          of the facility shall  conduct performance test(s)
          in accordance with the requirements of 40 CFR 60.8.

    (iv)   If the owner(s) and operator(s)  of The J.  R. Simplot
          Company  facility are presently in compliance with
          the requirements of paragraph (b)(2)  and  (b')(3)  of
          this  section or in compliance with a  portion of
          these requirements, such compliance shall  be certified
          to the Administrator within 15 da'ys following the date
          of these requirements  as a final regulation in  the
          FEDERAL  REGISTER.   If  the owner(s) or operator(s)
          of The J.  R. Simplot Company achieve  compliance
          prior to July 31,  1976, such compliance shall be
          certified  to the Administrator within 15  days of
          the date of achieving  compliance.  The Administrator
          may request whatever supporting  information he
          considers  necessary to determine the  validity of the
          certification.

(5)  (i)   By no later than September 30, 1976,  the  owner(s)
          and operator(s) of The J. R. Simplot  Company
          facility shall  install, calibrate, maintain and
          operate  measurement system(s) for:

          (A)  Continuously  monitoring and recording S02  con-
               centration rates  in each sulfuric acid plant
               discharge  stack per the requirements of 40 CFR
               60.13 and  60.84.

          (B)  Continuously  monitoring and recording gas  vol-
               umetric flow  rates in the exhaust stack of the
               designated #300 sulfuric acid plant.
                           -77-

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 (ii)   By no later than October 30,  1976,  and at such other
       times following that date as  the Administrator may
       specify,  the S02 concentration  measurement system(s)
       installed and used pursuant to  this paragraph shall
       be demonstrated to meet the measurement system per-
       formance  specifications prescribed  in 40 CFR 60.13
       and Appendix E to this  part,  respectively.   The
       Administrator shall  be  notified at  least 10 days
       prior to  the start of this field test period to
       afford the Administrator the  opportunity to have
       an observer present.

(iii)   The sampling point for  monitoring the concentration
       of S02 emissions shall  be in  the duct at the centroid
       of the cross section of the discharge stack if the
       cross sectional area is less  than 4.65 m2 (50 ft2)
       or at a point no closer to the  wall than 0.91 m (3 ft)
       if the cross sectional  area is  4.652 (50 ft2)or more.
       The monitor sample point shall  be representative
       of the average concentration  in the duct.

 (iv)   The measurement system(s) shall be  maintained, oper-
       ated and  calibrated in  accordance with the methods
       prescribed by the manufacturers.   Records of main-
       tenance and/or calibration shall  be kept and submitted
       to the Administrator upon request.   These records  shall
       clearly show instrument readings before and after  such
       calibration and/or maintenance.

  (v)   The owner(s) and operator(s)  of The J.  R.  Simplot
       Company facility shall  maintain a daily record of  three
       hour average emission rate measurements for each
       sulfuric  acid plant. Three hour average emission
       rates shall be calculated for each  day beginning
       at midnight.  For the #100 and  #200 acid plants, the
       calculations shall  be in conformance with 40 CFR
       60.84. For the #300 acid plant, average S02 emission
       rates expressed in kg SOg per hour  shall be calculated.
       The results of these calculations for each month shall
       be submitted to the Administrator wihtin 15 days
       following the end of each month.   Such submission
       shall identify each period of excess emission that
       occurred  and the nature and cause of any mal-
       function  (if known), the corrective action taken or
       preventative measures adopted.   The records of such
       measurements including  strip  charts and other approp-
       riate- raw data shall be retained for a minimum of  two
       years following the date of such measurements.

 (vi)   The continuous monitoring and recordkeeping require-
       ments of  paragraph (b)(5) of  this section shall become
       applicable  September 30,  1976.
                        -78-

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(6)   (i)   Compliance with the requirements set forth in para-
          graph (b)(3)  of this section shall  be determined
          using the emission rates measured by the continuous
          measurement system(s)  installed, calibrated,  main-
          tained and operated in accordance with the require-
          ments of paragraph (b)(5) of this section.

    (ii)   At the Administrator's discretion,  compliance may
          also be determined using the manual  source test
          methods per 40 CFR 60.85 and Appendix A to Part 60
          of this Title.  Emission rates for each stack shall
          be expressed in units  consistent with those in para-
          graph (b)(3)  of this section.

   (iii)   A violation of the requirements of paragraph  (b)(3)
          of this section shall  occur whenever the S02  emission
          rates determined according to paragraph (b)(6)(i) or
          (b)(6)(ii) of this section exceed the corresponding
          S02 emission rates specified in paragraph (b)(3) of
          this section.

(7)   The  owner(s) and operator(s) of The J. R. Simplot  Company
     facility shall by September 30, 1976, install, calibrate,
     maintain and operate a network for continuously monitoring
     ground level ambient S02 concentrations and wind speed
     and  direction.

     (i)   The monitoring network shall consist of at least four
          ambient S02 monitoring stations and one meteorological
          station placed at locations approved by the Administra-
          tor.

    (ii)   The SOg monitoring network shall be consistent with
          automated equivalent methods for measurement  of am-
          bient concentrations of S02 as defined in Part 53
          of this chapter.

   (iii)   The monitoring network installed and used pursuant to
          this subparagraph shall be maintained, operated and
          calibrated in accordance with the methods prescribed
          by the manufacturers.   Records of maintenance and/or
          calibration shall be kept and submitted to the Ad-
          ministrator upon request.  These records shall clearly
          show instrument readings before and after such cal-
          ibration and/or maintenance.

    (iv)   The owner(s) and operator(s) of The J. R. Simplot
          Company facility shall maintain a daily record of
          all measurements required by this subparagraph.
          Strip charts and other raw data from the monitoring
          network shall be retained for a minimum of two years
          following the date of such measurement.
                            -79-

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     (v)   The owner(s)  and operator(s)  of The J.  R.  Simplot
          Company shall  calculate hourly average  ambient S02
          concentrations,  wind  speed,  and wind direction
          from each monitoring  station  and submit such values
          to the Administrator  within  15 days following the end
          of each month.

    (vi)   The continuous monitoring  and recordkeeping  require-
          ments of paragraph (b)(7)  of this section  shall  be-
          come applicable  September  30, 1976 and  shall re-
          main applicable  until  such time as the  Administrator
          declares that an adequate  ambient air data base  has
          been established, which shall be no earlier  than at
          least one calendar year.

   (vii)   Within 90 days of the Administrator's declaration of
          an adequate data base, Simplot shall submit  to the
          Administrator a  technical  analysis of the  degree of
          permanent control required on the #300  acid  plant to
          ensure attainment and maintenance of NAAQS.

(8)   Nothing in paragraph  (b) of this  section shall  be construed
     to relieve the owner(s) and operator(s) of The  J. R.  Simplot
     Company to comply with any applicable requirements of Part
     60 of this Title and  this  paragraph, the more restrictive
     interpretation or requirement shall  apply.

(9)   In the event that measurement systems cannot be installed
     and operational by the date specified in this section, The
     J. R. Simplot Company shall propose the earliest  possible
     date by which such requirements can  be  met.   Such  proposal
     shall include adequate justification and supporting docu-
     mentation.
                            -80-

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(50.2)   52.676   Control  Strategy:   Sulfur oxides—Eastern  Washington-Northern
                Idaho  Interstate  Region.

            (a)   (1)   The requirements  of 51.13  of this  chapter  are  not  met  to
                      the extent  discussed in  paragraph  (a)(2) of  this section
                      in the  Idaho  portion of  the  Eastern  Washington-Northern
                      Idaho Interstate  Region  since the  plan  does  not  provide
                      for the necessary emission reductions for  the  attainment
                      and maintenance of the primary and secondary standards
                      for sulfur  oxides.

                 (2)   Regulation  S  of the "Rules and Regulations for the Control
                      of Air  Pollution  in Idaho" is approved  with  the  exception
                      of paragraphs (4),  (5),  (6), (7),  and  (17) of  section  4
                      which are disapproved and  are replaced  by  paragraph (b)
                      of this section as  shown below.  Those  paragraphs  disap-
                      proved  by this rulemaking  are inconsistent with  the
                      purposes and  provisions  of Section 110  of  the  Clean Air
                      Act.

            (b)   Regulation for control of sulfur dixoide  (S02)  emissions:   Zinc/
                 lead  smelter complex.

                 (1)   This section  is applicable to any  combined zinc/lead
                      smelter in  the Idaho portion of the  Eastern  Washington-
                      Northern Idaho Interstate  Region.

                      (i)  The owner(s) or operator(s) of  the smelter  subject
                           to this  section shall not cause or allow  the  dis-
                           charge of gases into  the atmosphere in  excess of:

                           (a) 2600 parts per million  (by volume) S02-maximum
                               6-hour  average,  from any single  absorption sul-
                               furic acid producing designed for  the  removal
                               of S02  as determined by  the method specified
                                in  paragraph  (b)(4)(i) or  (b)(4)(iii)  of this
                               section.

                           (b) 2000 parts per million  (by volume) S02-maximum
                               6-hour  average,  from the lead main stack system
                               which consists of the lead plant main  stack
                               and section 1  and 2 of the lead  plant  main
                               baghouse.  Emission concentration  shall  be deter-
                               mined by the method specified in paragraph (b)(4)
                                (i) or  (b)(4)(iii) of this section.

                           (c) 616,900 Kg (680  tons)  S02  per 7-consecutive  day
                               period  (midnight to midnight), as  determined
                               by the  method  specified  in paragraph (b)(4)(ii)
                               of this section.  Such  limitation  shall  apply
                               to the  sum total of S02  emissions  from the
                               zinc/lead smelter complex  but no
                                            -81-

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               uncaptured fugitive  emission  and  those'emissions
               due solely to  use  of fuel  for space  heating  or
               steam generation.

         (ii)   All S02  gas streams  discharged from  the zinc
               plant roasters and the  strong SOg  removal  fac-
               ility which meets  the requirements of  paragraph
               (b)(l)(i)(a) of this section.   The strong  S02
               gas stream from the  lead  smelter  sinter machine
               is  defined as  the  entire  gas  stream  exhausted from
               the  "strong gas"  exit  point  on the  input  end
               of  the lead smelter  sinter machine.

        (iii)   Gases shall not be combined with  those arising
               from the process(es) served by the stack(s)
               subject  to the limitations in paragraph (b)(l)(i)
               of  this  section for  the purposes  of  decreasing the
               concentration  of 862 in such  stack(s).

(2)   (i)   The  owner(s)  or operator(s)  of the smelter  subject to
          this section  shall  comply with the compliance schedule
          specified below for implementing the requirements of
          this paragraph:

          (a)   Effective immediately and until July 31, 1977,
               limit the discharge  of  SO? into the  atmosphere
               as  defined by  paragraph 4(4)  of Regulation S of
               the "Rules and Regulations for the Control of
               Air Pollution  in Idaho".

          (b)   February 15, 1976—Let  contracts  of  issue  purchase
               orders for any equipment  necessary to  attain the
               emission limitations specified in  paragraph  (b)
               (1) of this section.

          (c)   June 30, 1976—Initiate on-site construction or
               installation of emission  control  equipment or
               process  modificaiton.

          (d)   June 30, 1977--Complete on-site construction or
               installation of emission  control  equipment or
               process  modification.

          (e)   July 31, 1977—Achieve  full compliance with  the
               emission limitation  requirements  of  paragraph (b)
               (1) of this section.

          (f)   July 31, 1977—Initiate continuous S02 monitoring
               and record keeping requirements of paragraph (b)
               (3) of this section.
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    (ii)   The  owner(s)  or  operator(s)  of  the  smelter  subject
          to this  section  shall  notify the Administrator  in
          writing  within 5 days  after  the deadline  of each in-
          crement  of  progress, whether or not the required in-
          crement  of  progress  has  been met.

   (iii)   Where  a  performance  test is  deemed  necessary by the
          Administrator in order to determine whether compli-
          ance has been achieved,  such a  test must  be completed
          by the final  compliance  date in the applicable  compli-
          ance schedule.   Notice must be given to the admin-
          istrator at least 2  weeks prior to  conducting a per-
          formance test to afford  him  the opportunity to  have
          an observer present.

    (iv)   If the owner(s)  or operator(s)  of the  smelter subject
          to this  section  are  presently in compliance with any
          of the increments of progress set forth in  this par-
          agraph,  such  owner(s)  or operator(s) shall  certify
          such compliance  to the Administrator within 30  days
          of the effective date  of this paragraph.  The Admin-
          istrator may  request whatever supporting  information
          he considers  necessary to determine the validity of
          the  certification.

     (v)   The  owner(s)  or  operator(s)  of  the  smelter  subject
          to this  section  may  submit to the Administrator a
          proposed alternative compliance schedule.   No such
          compliance  schedule  may  provide for final compliance
          later  than  July  31,  1977.  If approved by the Admin-
          istrator, such schedule  shall replace  the compliance
          schedule set  forth in  this paragraph.

(3)  The  owner(s)  or  operator(s) of the smelter  subject to this
     section shall install, calibrate, maintain  and operate
     measurement systems for continuously monitoring  and  record-
     ing  S02 emission concentrations and  emission rates in the
     lead smelter  and zinc plant main  stacks  and in any other
     stack capable of emitting greater than 45,360  Kg (50 tons)
     SOo  per year  and in any lead  smelter duct which  would en-
     able the  operator to  route  strong S02 gas streams directly
     to the atmosphere thereby bypassing  around  the lead  smelter
     sulfuric  acid plant.   For the purpose of this  paragraph,
     "continuous monitoring" means the taking and recording  of
     at least  one  measurement  of S02 concentration  and stack
     gas  flow  rate from the effluent of each  stack  in each 15-
     minute period.  Stack tests of sources emitting  less than
     45,360 Kg (50 tons) S02 per year  shall be conducted  quarter-
     ly with the determined emission rate to  be  used  as a fixed
     emission  rate for that quarter.
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  (i)   By no later than July 31,  1977,  and at such other
       times after that date as the Administrator may
       specify,  the SC^ concentration measurement system(s)
       and gas  volumetric flow rate system(s) installed and
       used pursuant to this paragraph  shall  be demonstrated
       to meet  the measurement system performance specifica-
       tions prescribed in Appendices D and E to this part,
       respectively.    The Administrator shall  be notified
       at least 10 days prior to  the start of the field test
       period required in Appendices D  and E  to this  part to
       afford the Administrator the opportunity to have an
       observer present.

 (ii)   The sampling point for monitoring emissions shall  be
       in the duct at the centroid of the cross section if the
       cross sectional area is less than 4.647  m2 (50 ft.2)
       or at a  point no closer to the wall than 0.914 m
       (3 ft.)  if the cross sectional area is 4.647 m2
       (50 ft.') or more.  The monitor  sample point shall
       be in an area of small spatial concentration gradient
       and shall be representative of the average concentration
       in the duct.

(iii)   The measurement system(s)  installed and  used pursuant
       to this  section shall be subjected to  the manufacturer's
       recommended zero adjustment and  calibration at shorter
       intervals, in which case such specifications or recom-
       mendations shall be followed. Records of these pro-
       cedures  shall be made which clearly show instrument
       readings  before and after  zero adjustment and  calibra-
       tion.

 (iv)   Six-hour average S02 concentrations and  emission rates
       shall be calculated in accordance with paragraph (b)
       (4) of this section and recorded daily.

  (v)   The owner(s) or operator(s) of the smelter subject to
       this paragraph shall maintain a  record of all  measure-
       ments required by this paragraph.  Measurement results
       shall be expressed in the  units  prescribed by  the
       emission limitations in paragraph (b)(l) of this section.
       Six-hour average concentration values  calculated pur-
       suant to paragraph (b)(4)(i) and(ii) of this section
       shall be reported as of each hour for  the preceding 6
       hours.  Seven-day emission rates calculated pursuant
       to paragraph (b)(4)(i)(ii) of this section shall be
       reported as of each day (midnight to midnight) for the
       preceding 7-day period.  Any occasion  wherein  those
       strong gas streams identified in paragraph (b)(l)(ii)
       of this  section are not processed through an S02 re-
       moval facility and are routed to the atmosphere shall
       be recorded.  The results  shall  be summarized  monthly
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          and  shall  be  submitted  to  the  Administrator within  15
          days of the end  of each month.   A  record  for at  least
          2 years following  the date of  such measurement.

    (vi)   The  continuous monitoring  and  recordkeeping require-
          ments of paragraph (b)(3)  of this  section shall  be-
          come applicable  July 31, 1977.

(4)   (i)   Compliance with  the requirements of paragraph (b)(1)(i)
          (a)  and (b)(l)(i)(b) of this section shall  be deter-
          mined using the  continuous measurment system(s)  instal-
          led, calibrated, maintained and operated  in accordance
          with the requirements of paragraph (b)(3) of this section.
          For  the stack(s) equipped  with the measurement systems)
          required by paragraph  (b)(3) of this section and sub-
          ject to the limitations of paragraphs (b)(l)(i)(a)  or
          (b)(l)(i)(b)  of  this section,  a 6-hour average SO?
          concentration shall be  calculated  as of the end  of  each
          clock hour for the preceding 6 hours, in  the following
          manner:

          (a)   Divide each 6-hour period into twenty-four  (24)
               15-minute segments.

          (b)   Determine on  a compatible basis an SC^ concentra-
               tion for each 15-minute period.  These measure-
               ments may be  obtained either  by continuous  inte--
               gration  of  all measurements (from the respective
               affected facility) recorded during the 15-minute
               period or from the arithmetic average of any num-
               ber of S02  concentration  readings equally spaced
               over the 15-minute period.  In the latter case,
               the same number of concentration readings shall
               be taken in each  15-minute period and the readings
               shall be similarly spaced within each 15-minute
               period.

          (c)   Calculate the arithmetic  average of  all 24  concen-
               tration  measurements  in each  6-hour  period  for
               each attack.

    (ii)   Compliance with  the requirements of paragraph (b)(l)
          (i)(c) of this section  shall be determined using the
          continuous measurement  system(s) installed, calibrated,
          maintained and operated in accordance with the require-
          ments of paragraph (b)(3)  of this  section.   For  all
          stacks equipped  with the measurement system(s) required
          by paragraph  (b)(3) of  this section, the  average S02
          emission rate for  a 7-day  period shall be calculated
          on a daily basis (midnight to  midnight) as follows:
                           -85-

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       (a)   Divide each 6-hour period into twenty-four (24)
            15-minute segments.

       (b)   Determine a compatible basis an S02 concentra-
            tion and a stack gas flow rate measurement for
            each 15-minute period for each affected stack.
            These measurements may be obtained either by con-
            tinuous integration of S02 concentration and
            stack gas flow rate measurements (from the re-
            spective affected facilities) recorded during
            the 15-minute period or from the arithmetic
            average Of any number of S02 rnnrpnt.rat.inn anrl
            stack gas flow rate  readings equally.soaced over
            the 15-minute period.   In the latter case, the
            number of concentration readings shall  be taken
            in each 15-minute period and the readings shall
            be similarly spaced  within each 15-minute period.

       (c)   Calculate the arithmetic average (pounds SO? per
            hour) of all  24 emission rate measurements in
            each 6-hour period for each stack.

       (d)   Calculate the SOo emission rate for each consecu-
            tive 7-day period (midnight to midnight) by
            summing the twenty-eight (28) 6-hour average S02
            emission rates for each stack measured over a
            7-day period calculated per paragraph (b)(4)(ii)
            (c) of this section.  Add the predetermined con-
            stant  for all sources under 50 tons S02 per year
            as calculated per paragraph (b)(3)  of this section.

(iii)   Notwithstanding the requirements of paragraph (b)(4)
       (i)  of this section, compliance with requirements
       of paragraph (b)(l)(i)(a) and (b)(l)(i)(b) of this
       section shall also be determined by using the methods
       described below at such times as may be specified by
       the  Administrator.  For each stack serving any process
       or any process designed for the removal  of S02> a 6-hour
       average S02 concentration shall be determined as follows:

       (a)   The test of each stack emission concentration
            shall be conducted while the processing unit(s)
            vented through such  stack are operating at or
            above the maximum rate at which such unit(s)
            will be operated and under such other conditions
            as the Administrator may specify.

       (b)   Concentrations of S02 in emissions shall be deter-
            mined by using Method 8 as described in Part 60
            of this chapter.  The analytical and computational
            portions of Method 8 as they relate to determin-
            ation of sulfuric acid mist and sulfur trioxide,
                         .-86-

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              as well as  isokinetic sampling, may be omitted
              from  the over-all test procedure.
          (c)  Three  independent sets of measurements of
              concentrations shall be conducted during three
              6-hour periods for each stack.   Each 6-hour
              period will consist of three consecutive 2-hour
              periods.  Measurements of emission  from all
              stacks on the smelter premises need not be con-
              ducted simultaneously.  All tests must be com-
              pleted within a  72-hour period.

          (d)  In  using Method  8, traversing shall be conducted
              according to Method 1 as described  in Part 60 of
              this chapter.  The minimum  sampling volume for
              each 2-hour test shall be 1.132m3 (40 ft. 3)  cor-
              rected to standard conditions, dry  basis.

          (e)  The velocity of  the total effluent  from each stack
              evaluated shall  be determined by using Method 2
              as  described in  Part 60 of  this  chapter and  travers-
              ing according to Method 1.  Gas  analysis shall
              be  performed by  using the integrated sample  tech-
              nique  of Method  3 as described in Part 60 of this
              chapter.  Moisture content  shall be determined
              by  using Method  4 except that stack gases arising
              only from a sulfuric acid production unit may be
              considered to have a zero moisture  content.

          (f)  The gas sample shall be extracted at a rate  pro-
              portional to gas velocity at the sampling point.

          (g)  The S02 concentration in parts per  million-maximum
              6-hour average for each stack is determined  by
              calculating the  arithmetic  average  of the results
              of  the three 6-hour test periods each consisting
              of  three 1-hour  tests.

(5)   The owner(s)  or  operator(s) of any combined zinc/lead  smel-
     ter subject to Regulation  S of the "Rules  and Regulations
     for the Control  of Air Pollution  in  Idaho" and paragraph
     (b) of this section shall  be  in violation  of  Section  113
     of the Clean  Air Act and subject  to the penalties specified
     therein if  any of the following occur:

     (i)  Any increment of the  compliance  schedule set forth in
          paragraph  (16) of Section 4 of Regulation S is not met
          by the date specified; or

    (ii)  Any increment of the  compliance  schedule set forth in
          paragraph  (b)(2) of this section is not  met by the
          date specified; or
                            -87-

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   (iii)   Any emission limitation set forth in  paragraph (4)
          of Section 4 of Regulation  S which has  been incor-
          porated by reference into this  regulation  per para-
          graph (b)(2)(i)(a)  of this  section,  is  exceeded;  or

    (iv)   After July 31,  1977 any emission  limitation set
          forth in paragraph  (b)(l) of this section  is exceeded;
          or

     (v)   Any ambient air quality standards for S02  as defined
          by paragraph (b)(i)(i)  of Section 4  of  Regulation S
          is exceeded after the dates specified in paragraph
          (3)(i)(i) of Section 4 of Regulation  S  in  the de-
          signated liability  area; or

    (vi)   Operation of the supplementary  control  system is  not
          conducted in accordance with the  Idaho  Department of
          Health  and Welfare approved operational manual;  or

   (vii)   The reporting requirements  of Paragraph (12) of
          Section 4 of Regulation S are not met.

(6)   Compliance with emission standards:  Reporting  excess
     emissions during periods of start-up,  shutdown  and mal-
     function.

     (i)   The owner(s) or operator(s) of  the smelter subject to
          this section are subject to the provisions of this sub-
          paragraph in regard to excess emission  during periods
          of start-up, shutdown and malfunction.

    (ii)   All terms used  in this paragraph  but  not specifically
          defined below shall have the meaning  given them in the
          Clean Air Act or Part 51, 52 or 60 of this chapter.

          (a)  The term "excess emissions"  means  an  emission
               rate which exceeds any applicable  emission limit-
               ation prescribed by paragraph (b)(l)  of this
               section.  The  averaging time and test procedures
               for determining  such  excess emission shall
               be as specified as part of the  applicable emission
               limitation.

          (b)  The term "malfunction" means any sudden and  un-
               avoidable  failure of air pollution control equip-
               ment or process to operate in a  normal  and usual
               manner.  Failures that are caused  entirely or
               in part by poor maintenance, careless  operation
               or any other preventable upset  condition or  pre-
               ventable equipment breakdown shall not be con-
               sidered malfunctions.
                           -88-

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       (c)   The   term  "start-up"  means  the  setting  into  op-
            eration  of any  air pollution  control  equipment
            or process equipment  for  any  purpose, except
            routine  phasing in of process equipment.

       (d)   The  term "shutdown" means the cessation of op-
            eration  of any  air pollution  control  equipment
            or process equipment  for  any  purpose, except
            routine  phasing out of process  equipment.

       (e)   The  term "violation"  means  any  incident of excess
            emissions, regardless of  the  circumstances of the
            occurrence.

(iii)   (a)   In the case of  excess emissions from  the smelter
            subject  to this section for which  the Administra-
            tor  has  issued  a Notice of  Violation, the owner(s)
            or operator(s)  of the subject smelter may submit
            the  following data in order to  assist the Admin-
            istrator in carrying  out  his  duties under Section
            113  of the Clean Air  Act.

       (b)   Each submission shall include,  as  a minimum:

            (i)   The identity of  the  stack  and/or other  emis-
                 sion  points where the  excess  emissions
                 occurred;  and

           (ii)   The magnitude of the excess emission expressed
                 in  the units of  the  applicable emission
                 limitation and the operating  data  and calcu-
                 lations used in  determining the  magnitude
                 of  the excess emissions; and

          (iii)   The time and duration  of the  excess emissions;
                 and

           (iv)   The identity of  the  equipment causing the
                 excess emissions; and

            (v)   The nature and cause of  such  excess emissions;
                 and

           (vi)   The measured or  estimated  ambient  SC^ concen-
                 trations which occurred  or which were expected
                 to  occur during  the  period; and

          (vii)   If  the excess emissions  were  the result of
                 a malfunction, the steps taken to  remedy the
                 malfunction and  the  steps  taken  or planned
                 to  prevent the recurrence  of  such  malfunction;
                 and
                        -89-

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          (viii)   The  steps  taken  to  limit  the  excess  emissions
                  and  the  resultant  impact  on ambient  air qual-
                  ity;  and

            (ix)   Documentation  that  the  air pollution control
                  equipment, process  equipment,  processes
                  were  at  all  times maintained  and  operated,
                  to the maximum extent practicable,  in a
                  manner consistent with  good practice for
                  minimizing emissions.

  (iv)   At any time, the owner(s)  or  operator(s)  of the smelter
        subject to this section  has the right to  submit data
        information or  reports to  the Administrator,  including
        but not limited to the information  specified  in sub-
        paragraph  (6)(iii)(b)  above,  in order to  assist the
        Administrator  in carrying  out his statutory respon-
        sibilities under Section 113  and  303 of  the Clean Air
        Act.

   (v)   The submittal  of information  pursuant to  subparagraphs
        (6)(ii) and (iv) of  this paragraph  shall  be used by
        the Administrator  in determining  the seriousness of
        the violation,  whether the source made  in good faith
        effort to  comply,  the need for further  enforcement
        action and the  appropriate sanctions, if  any under
        the provisions  of  the Clean Air Act.

  (vi)   Excess emissions during  periods of  routine  maintenance
        or during  routine  phasing  in  or out of  process equip-
        ment shall be  considered to be the  result of a start-
        up, shutdown or malfunction.
 (vii)   All  SOg  gas  streams  discharged  from  the  zinc  plant
        roasters and the  strong  S02  gas stream discharged
        from the lead smelter sintering machines described
        in subparagraph  (l)(i) of this  paragraph that are not
        processed through an SC>2 removal  facility shall  be
        considered excess emissions.

(viii)   In the event that owner(s) or operator(s) of  the smel-
        ter subject  to this  section  has been granted  permis-
        sion by the  Administrator and the Director of the
        Idaho Department  of  Health and  Welfare to use a
        supplementary control system pursuant to the  pro-
        visions  of Regulation S  of the  "Rules and Regulations
        for the Control of Air Pollution in  Idaho" as part-
        ially approved in paragraph  (a) of this  section,
        nothing  in this section  shall be construed to relieve
        the owner(s) or operator(s)  of  the smelter subject
        to this  section from his assumed liability for all
        violations of any applicable ambient air quality
        standards which occur in the designated  liability
                         -90-

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      area,  including  those  isolations  that  occur  as  the
      result of a  malfunction,  start-up or shutdown.

(ix)   Failure of the owner(s) or  operator(s)  of  the smelter
      subject to this  section to  report periods  of excess
      emissions pursuant to  paragraph  (b)(3)(v)  shall  be
      considered a violation of the  provisions of  this
      subpart.

 (x)   Nothing in this  section shall  construed to limit
      the authority of the Administrator to  institute
      actions under Section  113 and  303 of the Clean  Air
      Act or to exercise his authority  under Section  114
      of the Clean Air Act.
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(6.0)     52.677  Compliance Schedules

         (d)   Federal  compliance schedules.

              (1)  Except as provided  in  subparagraph  (5)  of this  paragraph,  the
                   owner of any Kraft  pulp mill  subject to the  following  emission
                   limiting regulation in the Idaho Implementation Plan  shall
                   comply with the compliance schedule in  subparagraph  (2)  of this
                   paragraph:   "Rules  and Regulations  for  the Control of  Air
                   Pollution in Idaho,"  regulation  0,  section 3,  subsection E
                   (chapter VII of the Idaho implementation plan).

              (2)  Compliance schedule for recovery furnaces.

                   (i)   January 1, 1974—-Achieve compliance with  the  applicable
                        regulations, and  certify such  compliance  to the Administa-
                        tor.

                  (ii)   If a performance  test is determined necessary by  the  Ad-
                        ministrator to certify compliance, such a  test must be
                        completed by January 15, 1974.   Ten days  prior to such
                        a test, notice must  be given to the Administrator to
                        afford him the opportunity  to  have an observer present.

              (3) —(4)   (Reserved)

              (5)  (i)   None of the above subparagraphs shall apply to a  source
                        which  is presently  in compliance  with  applicable reg-
                        ulations and which has certified such compliance  to the
                        Administrator  by  October 1, 1973.   The  Administrator
                        may request whatever supporting information he considers
                        necessary for  proper certification.

                  (ii)   Any compliance schedule adopted by the  State  and  approved
                        by the Administrator shall  satisfy the  requirements of
                        this paragraph for the affected source.

                 (iii)   Any owner or operator subject  to a compliance schedule in
                        this paragraph may submit to the Administrator no later
                        than October 1,  1973, a proposed alternative  compliance
                        schedule.  No  such compliance  schedule  may provide  for
                        final  compliance  after the  final compliance date  in the
                        applicable compliance schedule of  this  paragraph.   If
                        promulgated by the Administrator,  such  schedule  shall
                        satisfy the requirements of this paragraph for the
                        affected source.

              (6)  Nothing in this paragraph shall  preclude the Administrator
                   from promulgating a separate schedule for any  source  to  which
                   the  application of  a  compliance  schedule for any source
                   fails to satisfy the  requirements of 51.15(b)  and  (c)  of this
                   chapter.
                   (38  FR 22741, Aug.  23, 1973 as amended  at 38 FR 24342,  Sept.  7,
                   1973; 40 FR 10465,  Mar. 6, 1975; 41  FR  23203,  June 9,  1976.)

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(17.0)     52.683   Prevention of Significant Deterioration

           (b)  Definitions.  For the purposes of this section:

                (1)  "Facility" means an identifiable piece of process equipment.  A
                     stationary source is composed of one or more pollutant-emitting
                     facilities.

                (2)  The phrase "Administrator" means the Administrator of the Envi-
                     ronmental Protection Agency or his designated representative.

                (3)  The phrase "Federal Land Manager" means the head, or his desig-
                     nated  representative, of any Department or Agency of the Fed-
                     eral Government which administers federally-owned land, includ-
                     ing public domain lands.

                (4)  The phrase "Indian Reservation" means any federally-recognized
                     reservation established by Treaty, Agreement, Executive Order,
                     or Act of Congress.

                (5)  The phrase "Indian Governing Body" means the governing body of
                     any tribe, band, or group of Indians subject to the jurisdiction
                     of the United States and recognized by the United States as pos-
                     sessing power of self-government.

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

                (7)  "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)  Area designation and deterioration increment

                (1)  The provisions of this paragraph have been incorporated by ref-
                     erence into the applicable implementation plans for various
                     States, as provided in Subparts B through ODD of this part.  Where
                     this paragraph is so  incorporated, the provisions shall also be
                     applicable to all lands owned by the Federal Government and In-
                     dian Reservations located in such State.  The provisions of this
                     paragraph do not apply in those counties or other functionally
                     equivalent areas that pervasively exceeded any national ambient
                     air quality standards during 1974 for sulfur dioxide or particu-
                     late matter and then only with respect to such pollutants.
                     States may notify the Administrator at any time of those areas
                     which  exceeded the national standards during 1974 and therefore
                     are exempt from the requirements of this paragraph.
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(2)   (i)      For purposes of this paragraph, areas designated as Class
             I or II shall  be limited to the following increases in
             pollutant concentration occurring since January 1, 1975:

             	Area Designations	

                  Pollutant                      Class I      Class II
                                                 (ug/m3)      (ug/m3)
             Particulate matter:
               Annual  geometric mean 	        5            10
               24-hr maximum	       10            30

             Sulfur dioxide:
               Annual  arithmetic mean 	        2            15
               24-hr maximum 	        5           100
                3-hr maximum 	       25           700
     (ii)    For purposes of this paragraph, areas designated as  Class
             III'shall be limited to "concentrations'of"participate
             matter and sulfur dioxide no greater than the national
             ambient air quality standards.

     (iii)   The air quality impact of sources granted approval  to
             construct or modify prior to January 1, 1975 (pursuant to
             the approved new source review procedures in the plan)
             but not yet operating prior to January 1, 1975, shall not
             be counted against the air quality increments specified
             in paragraph (c) (2) (i) of this section.

(3)  (i)     All areas are designated Class II as of the effective
             date of this paragraph.  Redesignation may be proposed by
             the respective States, Federal Land Manager, or Indian
             Governing Bodies, as provided below, subject to approval
             by the Administrator.

     (ii)    The State may submit to the Administrator a proposal to
             redesignate areas of the State Class I, Class II, or
             Class III, provided that:

             (a)  At least one public hearing is held in or near the
                  area affected and this public hearing is held in
                  accordance with procedures established in 51.4 of
                  this chapter, and

             (b)  Other States, Indian Governing Bodies, and Federal
                  Land Managers whose lands may be affected by the
                  proposed redesignation are notified at least 30 days
                  prior to the public hearing, and
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        (c)  A discussion of the  reasons  for the proposed  redes-
            ignation  is available  for  public  inspection at  least
            30 days prior to  the hearing and  the  notice announc-
            ing  the hearing contains appropriate  notification of
            the  availability  of  such discussion,  and

        (d)  The  proposed redesignation is based on  the record of
            the  State's hearing, which must reflect the basis
            for  the proposed  redesignation, including consider-
            ation  of  (1)  growth anticipated  in the area,  (2)
            the  social, environmental, and economic effects of
            such redesignation upon the area  being  proposed for
            redesignation and upon other areas and  States,  and
            (3)   any  impacts  of  such proposed redesignation upon
            regional  or national interests.

        (e)  The  redesignation is proposed after consultation
            with the  elected  leadership of local  and other  sub-
            state general purpose  governments in  the area cov-
            ered by the proposed redesignation.

(iii)    Except  as provided in  paragraph (c) (3)  (iv) of this
        section,  a State in which lands owned  by the Federal Gov-
        ernment are located may submit  to the  Administrator  a
        proposal  to redesignate such lands Class I,  Class  II, or
        Class  III in accordance with subdivision  (ii) of this
        subparagraph provided  that:

        (a)  The redesignation is consistent with  adjacent State
            and privately owned  land,  and

        (b)  Such redesignation is  proposed after  consultation
            with the  Federal  Land  Manager.

(iv)    Notwithstanding subdivision (iii) of this  subparagraph,
        the Federal Land Manager  may submit to the Administrator
        a proposal to  redesignate any  Federal  lands  to  a more
        restrictive designation than would otherwise be applic-
        able provided  that:

        (a)   The Federal  Land  Manager  follows  procedures equiv-
             alent to  those  required of States under paragraph
             (c) (3)  (ii)  and,

        (b)  Such redesignation is  proposed after  consultation
             with the  State(s) in which the Federal  Land  is  lo-
             cated or which  border  the  Federal Land.

(v)     Nothing  in this section is  intended to convey  authority
        to the States  over Indian Reservations where States  have
        not assumed such authority  under other laws  nor is it
        intended to deny jurisdiction which States have assumed
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        under other laws.   Where a State has not assumed juris-
        diction  over an  Indian  Reservation  the appropriate In-
        dian  Governing Body may submit to the Administrator a
        proposal  to redesignate areas  Class I, Class  II, or
        Class III,  provided that:

        (a)   The Indian  Governing Body follows procedures equiv-
             alent  to those required of States under  paragraph
             (c)  (3) (11)  and,

        (b)   Such redesignation is proposed after consultation
             with the State(s)  in which the Indian Reservation
             is  located  or which border the Indian Reservation
             and, for those lands held in trust, with the approv-
             al  of  the Secretary of the Interior.

(vi)     The  Administrator  shall approve, within 90 days, any re-
        designation proposed pursuant  to this subparagraph as
        follows:

        (a)   Any redesignation  proposed pursuant to subdivisions
             (ii) and (iii) of  this subparagraph shall  be approv-
             ed  unless the Administrator determines (1)  that the
             requirements  of subdivisions (ii) and (iii) of this
             subparagraph  have  not been complied with,  (2)  that
             the State has arbitrarily and  capriciously disre-
             garded relevant considerations set forth in sub-
             paragraph (3) (ii) (d) of this paragraph,  or (3)
             that the State has not requested and received dele-
             gation of responsibility  for carrying out the new
             source review requirements of paragraphs (d) and (e)
             of this section.

        (b)   Any redesignation  proposed pursuant to subdivision
             (iv) of this  subparagraph shall be approved unless
             he  determines (1)   that the requirements of subdivi-
             sion (iv) of this  subparagraph have not  been complied
             with,  or (2)   that the Federal Land Manager has arbi-
             trarily and capriciously  disregarded relevant con-
             siderations set forth in  subparagraph (3)  (ii) (d) of
             this paragraph.

        (c)   Any redesignation  submitted pursuant to  subdivision
             (v) of this subparagraph  shall be approved unless he
             determines  (1)  that the  requirements of subdivision
             (v) of this subparagraph  have not been complied with,
             or  (2)  that the Indian Governing Body has arbitrar-
             ily and capriciously disregarded relevant consider-
             ations set  forth in subparagraph (3) (ii)  (d) of this
             paragraph.
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                 (d)  Any redes.ignation proposed pursuant to this para-
                      graph shall be approved only after the Administrator
                      has solicited written comments from affected Federal
                      agencies and Indian Governing Bodies and from the
                      public on the proposal.

                 (e)  Any proposed redesignation protested to the propos-
                      ing State, Indian Governing Body, or Federal Land
                      Manager and to the Administrator by another State or
                      Indian Governing Body because of the effects upon
                      such protesting State or  Indian Reservation shall be
                      approved by the Administrator only if he determines
                      that in his judgment the  redesignation appropriately
                      balances considerations of growth anticipated in the
                      area proposed to be redesignated;  the social, envi-
                      ronmental and economic effects of such redesignation
                      upon the area being redesignated and upon other areas
                      and States;  and any impacts upon regional or nation-
                      al interests.

                 (f)  The requirements of paragraph (c) (3) (vi) (a) (3)
                      that a State request and  receive delegation of the
                      new source review requirements of this section as a
                      condition to approval of  a proposed redesignation,
                      shall include as a minimum receiving the administra-
                      tive and technical functions of the new source re-
                      view.  The Administrator  will carry out any required
                      enforcement action in cases where the State does not
                      have adequate legal authority to initiate such ac-
                      tions.  The Administrator may waive the requirements
                      of paragraph (c)  (3) (vi) (a) (3) if the State Attor-
                      ney-General has determined that the State cannot ac-
                      cept delegation of the administrative/technical func-
                      tions.

          (v1i)   If the Administrator disapproves any proposed area desig-
                 nation under this subparagraph, the State, Federal Land
                 Manager or Indian Governing Body, as appropriate, may re-
                 submit the proposal after correcting the deficiencies
                 noted by the Administrator or  reconsidering any area des-
                 ignation determined by the Administrator to be arbitrary
                 and capricious.

(d)   Review of new  sources

     (1)   The provisions of this  paragraph have  been incorporated by refer-
          ence into the applicable  implementation plans for various States,
          as provided in Subparts B through ODD  of this part.  Where this
          paragraph is so  incorporated,  the requirements of this paragraph
          apply to  any new or modified stationary source of the type iden-
          tified below which has  not commenced construction or modification
          prior to  June 1, 1975 except as specifically provided below.  A
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    source which is modified, but does not increase the amount of
    sulfur oxides or particulate matter emitted, or is modified to
    utilize an alternative fuel, or higher sulfur content fuel, shall
    not be subject to this paragraph.
    (i)     Fossil-Fuel Steam Electric Plants of more than 1000 mil-
            lion B.T.U. per hour heat input.
    (ii)    Coal Cleaning Plants.
    (iii)   Kraft Pulp Mills.
    (iv)    Portland Cement Plants.
    (v)     Primary Zinc Smelters.
    (vi)    Iron and Steel Mills.
    (vii)   Primary Aluminum Ore Reduction Plants.
    (viii)  Primary Copper Smelters.
    (ix)    Municipal Incinerators capable of charging more than 250
            tons of refuse per 24 hour day.
    (x)     Sulfuric Acid Plants.
    (xi)    Petroleum Refineries.
    (xii)   Lime Plants.
    (xiii)  Phosphate Rock Processing Plants.
    (xiv)   By-Product Coke Oven Batteries.
    (xv)    Sulfur Recovery Plants.
    (xvi)   Carbon Black Plants  (furnace process).
    (xvii)  Primary Lead Smelters.
    (xviii) Fuel Conversion Plants.
    (xix)   Ferroalloy production facilities commencing construction
            after October 5, 1975.
(2)  No owner  or operator shall commence construction or modification
    of a  source subject to this  paragraph  unless the Administrator de-
    termines  that, on  the basis  of  information  submitted pursuant to
    subparagraph  (3) of this paragraph:
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    (i)     The effect on air quality concentration of the source or
            modified source, in conjunction with the effects of growth
            and reduction in emissions after January 1, 1975, of other
            sources in the area affected by the proposed source, will
            not violate the air quality increments applicable in the
            area where the source will be located nor the air quality
            increments applicable in any other areas.  The analysis of
            emissions growth and reduction after January 1, 1975, of
            other sources in the areas affected by the proposed source
            shall include all new and modified sources granted approv-
            al to construct pursuant to this paragraph;  reduction in
            emissions from existing sources which contributed to air
            quality during all or part of 1974;  and general commer-
            cial, residential, industrial, and other sources of emis-
            sions growth not exempted by paragraph (c) (2) (111) of
            this section which has occurred since January 1, 1975.

    (ii)    The new or modified source will meet an emission limit,
            to be specified by the Administrator as a condition to
            approval, which represents that level of emission reduc-
            tion which would be achieved by the application of best
            available control technology, as defined in 52.01 (f),
            for particulate matter and sulfur dioxide.  If the Admin-
            istrator determines that technological or economic limi-
            tations on the application of measurement methodology to
            a particular class of sources would make the imposition
            of an emission standard infeasible, he may instead pre-
            scribe a design or equipment standard requiring the appli-
            cation of best available control technology.  Such standard
            shall to the degree possible set forth the emission re-
            ductions achievable by implementation of such design or
            equipment, and shall provide for compliance by means which
            achieve equivalent results.

     (iii)   With respect to modified sources, the requirements of sub-
            paragraph  (2)  (ii) of this paragraph shall be applicable
            only to the facility or facilities from which emissions
            are  increased.

(3)   In making the determinations required by paragraph (d)  (2) of this
     section,  the Administrator shall, as a minimum, require the owner
     or operator of the source subject to this paragraph to submit:
     site information,  plans, description, specifications, and drawings
     showing the  design of  the source;  information necessary to de-
     termine the  impact that the construction or modification will have
     on sulfur dioxide  and  particulate matter air quality levels;  and
     any other information  necessary to determine that best available
     control technology will be applied.  Upon request of the Adminis-
     trator, the  owner  or operator of the source shall provide informa-
     tion on the  nature and extent of general commercial, residential,
     industrial,  and other  growth which has occurred in the area af-
     fected by the source's emissions  (such area to be specified by  the
                            -99-

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         Administrator) since January  1,  1975.

     (4)  (i)     Where a new or modified  source  is  located on  Federal
                 Lands, such source shall be subject to  the  procedures
                 set  forth  in paragraphs  (d) and  (e) of  this section.
                 Such procedures shall be in addition  to applicable  pro-
                 cedures conducted by  the Federal Land Manager for admin-
                 istration  and protection of the  affected Federal Lands.
                 Where feasible, the Administrator  will  coordinate his
                 review and hearings with the Federal  Land Manager to
                 avoid duplicate administrative  procedures.

         (ii)    New  or modified sources  which are  located on  Indian
                 Reservations shall be subject to procedures set  forth  in
                 paragraphs (d) and (e) of this  section.  Such procedures
                 shall be administered by the Administrator  in cooperation
                 with the Secretary of the Interior with respect  to  lands
                 over which the State  has not assumed  jurisdiction under
                 other laws.

         (iii)   Whenever any new or modified source is  subject to action
                 by a Federal Agency which might, necessitate preparation
                 of an environmental impact statement  pursuant to the
                 National Environmental Policy Act  (42 U.S.C.  4321), re-
                 view by the Administrator conducted pursuant  to  this
                 paragraph  shall be coordinated  with the broad environmen-
                 tal  reviews under that Act, to  the maximum  extent feas-
                 ible and reasonable.

     (5)  Where  an  owner or  operator has applied  for permission to con-
         struct or modify pursuant to  this paragraph and the proposed
         source would be located in an area which has  been proposed  for
         redesignation to a more stringent class  (or the State, Indian
         Governing Body, or Federal Land  Manager has announced such  con-
         sideration), approval shall not  be granted until the  Administra-
         tor has acted on the proposed redesignation.

(e)   Procedures  for public participation

     (1)   (i)    Within 20  days after  receipt of an application to con-
                 struct, or any addition  to such  application,  the Admin-
                 istrator shall advise the owner or operator of any  de-
                 ficiency in the information submitted in support of the
                 application.   In the  event of such a  deficiency, the date
                 of  receipt of  the application for  the purpose of para-
                 graph  (e)  (1)  (ii) of this section shall be the  date on
                 which all  required information  is  received  by the Admin-
                 istrator.

          (ii)   Within 30  days after  receipt of a  complete  application,
                 the  Administrator shall:
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        (a)  Make a  preliminary determination whether the source
            should  be approved, approved with conditions, or dis-
            approved.

        (b)  Make available  in at  least one  location in each re-
            gion in which the proposed source would be construct-
            ed, a copy  of all materials submitted by the owner or
            operator, a copy of the Administrator's preliminary
            determination and a copy  or summary of other materi-
            als, if any, considered by the  Administrator in mak-
            ing his preliminary determination;  and

        (c)  Notify  the  public, by prominent advertisement in
            newspaper of general  circulation in each region in
            which the proposed source would be constructed, of
            the opportunity for written public comment on the in-
            formation submitted by the owner or operator and the
            Administrator's preliminary determination on the ap-
            provability of  the source.

(iii)    A copy of the notice required  pursuant to  this subpara-
        graph  shall  be sent  to the applicant and to officials and
        agencies having  cognizance over the  locations where the
        source will  be situated as follows:  State and local air
        pollution control agencies, the chief executive of the
        city and county; any comprehensive  regional land use plan-
        ning agency; and any State, Federal Land  Manager or In-
        dian Governing Body  whose  lands will be significantly af-
        fected by the source's emissions.

(iv)    Public comments  submitted  in writing within 30 days after
        the date such  information  is made  available shall be con-
        sidered by  the Administrator in making his final decision
        on the application.  No  later  than  10 days after the
        close  of the public  comment period,  the applicant may sub-
        mit a  written  response to  any  comments submitted by the
        public. The Administrator shall consider  the applicant's
        response  in  making  his  final decision.  All comments shall
        be made available for  public"inspection in at least one
        location  in  the  region  in  which the  source would be located,

(v)     The Administrator shall  take final  action  on an applica-
        tion within  30  days  after the  close  of the public comment
        period. The Administrator shall notify the applicant in
        writing of his  approval,  conditional approval, or denial
        of the application,  and  shall  set  forth his reasons for
        conditional  approval or  denial.  Such notification shall
        be made available for  public  inspection in at least one
        location  in  the  region  in  which  the  source would be lo-
        cated.
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          (vi)     The  Administrator  may  extend  each  of the  time  periods
                  specified  in  paragraph (e)  (1)  (ii), (iv),  or  (v)  of this
                  section  by no more than  30  days  or such other  period as
                  agreed to  by  the applicant  and  the Administrator.

     (2)   Any owner or operator who  constructs, modifies, or  operates  a
          stationary source  not in accordance with the application,  as ap-
          proved and conditioned by  the  Administrator, or any owner  or op-
          erator of a  stationary source  subject to this paragraph  who  com-
          mences construction or modification after  June 1, 1975,  without
          applying for and receiving approval hereunder, shall be  subject
          to enforcement action under section 113  of the Act.

     (3)   Approval to  construct or modify  shall become invalid if  construc-
          tion  or expansion  is  not commenced  within  18 months after  receipt
          of such approval or if construction is  discontinued for  a  period
          of 18 months or  more.  The Administrator may extend such time  pe-
          riod  upon a  satisfactory showing that an extension  is  justified.

     (4)   Approval to  construct or modify  shall not  relieve any  owner  or
          operator of  the  responsibility to comply with the control  strat-
          egy and all  local, State,  and  Federal regulations which  are  part
          of the applicable  State Implementation  Plan.

(f)   Delegation of authority

     (1)   The Administrator  shall have the authority to delegate responsi-
          bility for implementing the procedures  for conducting  source re-
          view  pursuant to paragraphs (d)  and (e), in accordance with  sub-
          paragraphs (2),  (3),  and  (4) of this  paragraph.

     (2)   Where the Administrator delegates the responsibility for imple-
          menting the  procedures for conducting source review pursuant to
          this  section to  any Agency, other than  a regional office of  the
          Environmental Protection Agency, the  following provisions  shall
          apply:

          (i)     Where the  agency designated is  not an air pollution  con-
                  trol agency,  such  agency shall  consult with the  appropri-
                  ate  State  and local air pollution  control agency prior to
                  making any determination required  by paragraph (d) of
                  this section.  Similarly, where the agency  designated
                  does not have continuing responsibilities for  managing
                  land use,  such agency  shall consult with  the appropriate
                  State and  local  agency which  is  primarily responsible  for
                  managing land use  prior to  making  any determination  re-
                  quired by  paragraph (d)  of  this  section.

          (ii)     A copy of the notice pursuant to paragraph  (e) (1) (ii)1
                  (c)  of this section shall be  sent  to the  Administrator
                  through  the appropriate regional office.
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(3)   In accordance with  Executive  Order 11752,  the  Administrator's
     authority for implementing the procedures  for  conducting  source
     review pursuant to  this  section shall  not  be delegated, other  than
     to a regional office of  the Environmental  Protection  Agency, for
     new or modified sources  which are  owned  or operated by the  Federal
     government or for new or modified  sources  located  on  Federal lands;
     except that,  with respect to  the latter  category,  where new or
     modified sources are constructed or operated on  Federal lands  pur-
     suant to leasing or other Federal  agreements,  the  Federal land
     Manager may at his  discretion, to  the  extent permissible  under ap-
     plicable statutes and regulations, require the lessee or  permittee
     to be subject to a  designated State or local agency's procedures
     developed pursuant  to paragraphs (d) and (e) of  this  section.

(4)   The Administrator's authority for  implementing the procedures  for
     conducting source review pursuant  to this  section  shall not be re-
     delegated, other than to a regional  office of  the  Environmental
     Protection Agency,  for new or modified sources which  are  located
     on Indian reservations except where the  State  has  assumed juris-
     diction over such land under  other laws, in which  case the  Admin-
     istrator may delegate his authority to the States  in  accordance
     with subparagraphs  (2),  (3),  and (4) of  this paragraph.

     (39 FR 42514, Dec.  5, 1974;  40 FR 2802, Jan.  16,  1975, as
      amended at 40 FR 24535, June 9, 1975;  40 FR  25005,  June 12,
      2975;  40 FR 42012, Sept. 10, 1975)
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