PA 908 1-76-001
JULY 1975
FUGITIVE DUST EMISSION
INVENTORY
WASATCH FRONT, UTAH

US. ENVIRONMENTAL PROTECTION AGENCY
REGION VIII
AIR & HAZARDOUS MATERIALS DIVISION
DENVER,COLORADO 60009

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EPA-908/1-76-001
PEDCo- ENVIRONMENTAL
SUITE 13 • ATKINSON SQUARE
CINCINNATI. OHIO 45246
S 1 3 / 771-4 330
FUGITIVE DUST EMISSION INVENTORY
WASATCH FRONT, UTAH
PEDCo-Environmental Specialists, Inc.
Suite 13, Atkinson Square
Cincinnati, Ohio 45246
Contract No. 68-02-1375
Task Order No. 19
Prepared for
U.S. ENVIRONMENTAL PROTECTION AGENCY
Region VIII
Air Programs Division
Denver, Colorado 80203
Prepared by
July, 1975
Suit* 110, Crown C*nt*r
Kan»a» City, Mo. 64108
BRANCH OFFICES
Suit* 104-A, Profmional Villas*
Chapel Hill, N.C. 27614

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This report was furnished to the U.S. Environmental
Protection Agency by PEDCo-Environmental Specialists, Inc.,
Cincinnati, Ohio, in fulfillment of Contract No. 68-02-1375,
Task Order No. 19. The contents of this report are repro-
duced herein as received from the contractor. The opinions,
findings, and conclusions expressed are those of the author
and not necessarily those of the Environmental Protection
Agency.
Material included in this report was not originally
intended for publication, but to document the data sources
and assumptions made in preparing the area source emission
inventory. Therefore, the text may be sketchy and the
report more useful as a resource document than a general
procedures manual for emission inventories. It should also
be pointed out that the area source emission inventory is
subject to frequent updating so that data presented herein
may soon become obsolete.
Publication No. EPA-908/1-76-001

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ACKNOWLEDGMENT
This report was prepared for the U.S. Environmental
Protection Agency by PEDCo-Environmental Specialists, Inc.,
Cincinnati, Ohio. Mr. Kenneth Axetell was the PEDCo Project
Manager. Principal authors of the report were Mr. Robert S.
Amick and Mr. Anthony S. Wisbith.
Mr. David Kircher was the Project Officer for the U.S.
Environmental Protection Agency. The authors appreciate the
assistance and cooperation extended to them by members of
the U.S. Environmental Protection Agency and the Bureau of
Air Quality, Utah State Division of Health, especially Mr.
Marius Gedgaudas (EPA, Region VIII), and Mr. Alvin E.
Rickers (USDH).
ii

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AC KNOWLEDGMENT
1.	SUMMARY
2.	METHODOLOGY
REFERENCES
TABLE OF CONTENTS
Pa9e
ii
1-1
2-1
iii

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1. SUMMARY
This report presents the results of a fugitive dust
emission inventory conducted for Utah's Wasatch Front, which
nearly coincides with the Salt Lake City Air Quality Main-
tenance Area* (AQMA). The inventory was performed to pro-
vide information to the Utah Bureau of Air Quality in their
assessment of the ability of the Utah State Implementation
Plan to maintain the particulate ambient air quality stand-
ards in this area. Air quality levels and emissions of
total suspended particulate (TSP) indicate this area to be
the only possible AQMA in Utah which may not currently meet
ambient air quality standards.
The inventory is primarily based on 1974 data, and
projections for 1980 and 1985 have also been made where
possible. It completes the particulate emission inventory"*"
conducted by GCA for the National Emissions Data System for
Utah in 1973. The inventory overlaps the GCA inventory in
*The modified Salt Lake City AQMA now includes Salt Lake
County, which makes the boundary identical to the Governor's
proposed 208 planning area.
^ State of Utah Compilation of NEDS Data. Prepared for
U.S. EPA Region VIII, Contract No. 68-02-1006, Task
No. 2. GCA/Tchnology Division. December 1973.
1-1

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four NEDS area source categories — unpaved roads, building
construction (industrial, commercial, institutional, and
residential), highway construction, and rock handling and
storage. This inventory is believed to be more accurate in
these overlapping categories because of the additional
detail employed.
The study area is comprised of Salt Lake, Utah, Davis,
and Weber counties and portions of the bordering counties of
Tooele, Juab, and Millard, which have fugitive dust sources
which impact the Wasatch Front. Figure 1-1 illustrates this
study area.
A summary of the results of the fugitive dust inventory
is presented by source category in Table 1-1, while Figure
1-2 illustrates their relative contribution to the total
fugitive dust emissions generated. As shown, residential/
commercial/industrial construction activities and unpaved
roads are the major fugitive dust sources in this area.
1-2

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GREAT
SALT
LAKE
TOOELE
I
r
i~—
i
i
i_—
r~
L...
MILLARD
«9ure w. Location o£ wasatch pront study ^ _ stat6 ^
1-3

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Table 1-1. UTAH FUGITIVE DUST EMISSIONS INVENTORY
(tons/year)
Source category
Weber
Davis
Salt Lake
Utah
Tooele
(partial)
Juab
(partial)
Millard
(partial)
Region
total
Agriculture








Wind blown
41
136
74
126
10
49
230
666
Tilling
6
6
16
19
5
12
8
72
Unpaved roads
454
697
2190
2690
37
187
315
6570
Tailings
Neg.
Neg.
2781
Neg.
41
3
6
2831
Aggregate storage
329
249
1576
581
Neg.
Neg.
Neg.
2735
Industrial storage
Neg.
Neg.
Neg.
22
Neg.
Neg.
Neg.
22
Road construction
245
Neg.
1625
26
Neg.
1442
Neg.
3338
Residential/commer-
cial/industrial
construction
372
546
10593
906
Neg.
Neg.
Neg.
12417
Sanding (ice & snow
control)
743
453
2694
958
Neg.
Neg.
Neg.
4848
County total
2190
2087
21549
5328
93
1693
559
33499

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INDUSTRIAL
STORAGE <1%
la.
%
CL
§
70
V—«
[Q
is
im


V/



ZL
ROAD CONSTRUCTION 10%
1
U1
# .





RESIDENTIAL
COMMERCIAL
INDUSTRIAL
CONSTRUCTION
37%
UNPAVED ROADS 20%
Figure 1-2. Graphic representation of relative contributions of individual source categories
to total Wasatch Front study area fugitive dust emissions.

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2. METHODOLOGY
INTRODUCTION
The fugitive dust categories surveyed include agri-
culture, unpaved roads, tailings, aggregate storage, indust-
rial storage, highway construction, residential-commercial/
industrial construction, and sanding (ice and snow control).
Sources initially considered, but subsequently determined to
be relatively insignificant, were cattle feed lots and land
development.
An aerial survey of the entire area was conducted on
May 29, 1975 by PEDCo-Environmental. Our observations
confirmed the insignificance of these sources, as well as
allowed inspection of fugitive dust sources in the bordering
counties (Juab, Millard, and Tooele) which are included in
the inventory. Figure 2-1 delineates the major fugitive
dust locations within the study area, as observed and docu-
mented during the aerial survey. Copies of representative
photographs taken during the aerial survey are presented and
identified in Figure 2-2.
Estimates of fugitive dust emissions were made by
employing emission factors developed in previous research
projects, as described and referenced in the sections which
2-1

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~,r \4X a
mi
LAKE ' )
vi:'^'Xviv''V'."".v!v
: CONSTRUCT
GREAT SALT DESERT
fUTAHtj u s- STEEL
'LAKE UGENEVAWORKS)
Figure 2-1. Major study area fugitive dust areas.
2-2

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White Sand Dunes - Juab County
Mine tailings on West slope
of Oquirrh Mountains
U.S. Steel Plant - Waste and	Construction area at Provo
Storage Piles, Geneva, Utah
Figure 2-2 Representative photographs of aerial survey.
2-3

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\
Agriculture near Santaquin in
Southern Utah County
Unpaved roads on West shore
of Lake Utah
Kenncott tailings pond	Kennecott Copper Mines - Tailings
come from waste material from
refining and smelting ore from this
mine.
Figure 2-2 (continued). Representative photographs of aerial survey.
2-4

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follow. Estimates of the particulate emissions from the
Great Salt Lake Desert area in Tooele County and the large
sand dune area (White Sand Dunes) in Juab County were not
possible because emission factors have not been developed
for these naturally occurring sources. In addition^ the
relatively large particle size of the surface sand in both
areas (fine sand particles are about 30 microns in diameter)
should constrain their impact on the suspended airborne
particulate (i.e. fugitive dust) of the Wasatch Front.
However, due to its proximity and topography, the Great Salt
Lake Desert area probably contributes in some degree to the
background particulate ambient air quality of the study
area.
SURVEY PROCEDURES
Descriptions of the estimating procedures and related
emission factors for the eight fugitive dust source cate-
gories are presented in the following sections. The emis-
sion factors and source parameters for these categories are
summarized in Table 2-1.
Agriculture
According to the 1974 Utah Agricultural Statistics2
annual publication, only 4.1 percent of Utah's total land
area is used as cropland. Yet, 25 percent of this two
million acres of cropland is located within the study area.
The aerial survey discussed previously showed a large
~2	j
Utah Agricultural Statistics 1974. Utah State Department
of Agriculture, Salt Lake City Utah.
2-5

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Table 2-1. SUMMARY OF EMISSION ESTIMATING PARAMETERS AND EMISSION FACTORS
UTAH FUGITIVE DUST STUDY
Source
Source
Data Obtained
Emission Factor Information
Category
Parameters
From
Emission Factor
Reference
Agriculture
Soil type
Crop type
Acreage of
crop type
Soil Conservation Service
U.S. Dept. of Agriculture
Utah State Department
of Agriculture
Tilling
(0.92 to 1.84 lb/acre)
windblown
(16.0 to 256 lb/acre/yr)
Supplement No. 5 for Compilation of air
Pollutant Emission Factors
U.S. Environmental Protection Agency (EPA)
April 1975

Climatic
conditions
Utah Guide for Wind Erosion
Control on Cropland (U.S. SCS

Development of Emission Factors for
Fugitive Dust Sources (EPA)
June 1974
Unpaved roads
Vehicle miles
traveled
(VMT) = miles
of unpaved
road x average
daily traffic
Climatic
conditions
Road surface
silt content
Utah State Dept. of Highways
Utah State Climatologist
(0.61 to 4.06 lb/-
vehicles mile)
4
Supplement No. 5
Tailings and
industrial
storage
Acres of
tailings
waste or
storage
Climatic
conditions
Control
¦ethods
Utah State Ind. Commission
Contact with individual plants
Utah Guide for Wind Erosion
(0.64 to 4.0 ton/acre/-
year)
Investigation of Fugitive Dust
Vol. I Sources, Emissions and Control
(EPA) June 1974

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Table 2-1 (continued). SUMMARY OF EMISSION ESTIMATING PARAMETERS AND EMISSION FACTORS
UTAH FUGITIVE DUST STUDY
Source
Source
Data Obtained
Emission Factor Information
Category
Parameters
From
Emission Factor
Reference
Aggregate
Storage
Tons of
Aggregate
Stored
Contact of Plant Operators
(2.17 lb/ton/year)
Development of Emission Factors for
Fugitive Dust Sources (EPA)
June 1974
Highway
cons truction
Miles of high-
way under
construction
Months of
construction
Utah State Department of
Highways
(0.708 tons/acre/nionth)
Supplement No. 5
Residential/
industrial/-
coramercial-
construction
Acres and
months of
construc-
tion
Systems Planning Division
Utah State Department of
Highway
County Planning Commissions
<0.708 tons/acre/month)
Supplement No. 5
Sanding for
ice and snow
control
Vehicle miles
traveled (VMT)
Number of days
with sanding
material on
road.
Utah State Department of
Highway
Engineering departments
of major cities
(0.17 lb/VKT)
Investigation of Fugitive Dust -
Colorado

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amount of agricultural activity in a two hundred square mile
area in northeastern Tooele County, Juab County east of U.S.
Route 50, and northeast Millard County. These areas were
included in the study because of their close proximity and
related impact on the Wasatch Front.
Agricultural emissions come from two major sources:
tilling operations of farm implements and wind blowing
across cultivated fields. Only acreages of field crops such
as oats, potatoes, corn, barley, wheat and sugar beets were
considered in estimating fugitive dust emissions.
In determining emissions from tilling operations, the
2
acreage of field crops for each county was employed with
emission factors per acre tilled which were derived from an
empirical equation in Supplement No. 5 to Compilation of Air
3
Pollutant Emission Factors. A correction factor of 0.8 was
applied to the emission factor so that the emission in-
ventory only accounted for that portion of emissions less
than 30 microns in diameter. Total agricultural emissions
from tilling for the study area were estimated to be 72
ton/yr.
In determining emissions from wind erosion across agri-
cultural fields, the acreage of each crop type previously
mentioned had to be considered separately. An empirical
equation obtained from the EPA report "Development of Emis-
3
Supplement No. 5 to Compilation of Air Pollutant Emission
Factors, Second Edition. U.S. EPA, Office of Air Quality
and Standards. Research Triangle Park, North Carolina
April 1975.
2-8

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4
sion Factors for Fugitive Dust Sources" was used in deter-
mining the emission factors. This equation is a simplified
version of the wind erosion equation developed to predict
topsoil losses. The emission factors calculated (0.008 to
0.128 ton/acre/yr) were then applied to the appropriate crop
acreages to determine the emissions produced, yielding a
study area total of 666 ton/yr.
Projected total emissions from agriculture in the study
area for 1980 and 1985 are 724 and 710 ton/yr, respectively.
These projections were exprapolated based on the historical
trend of total agricultural acreage for Utah from the pub-
lication "Utah Agricultural Statistics 1974." Decreases for
1980 and 1985, amounted to 1.9 and 3.8 percent, respectively,
as compared to 1974 acreage.
Unpaved Roads
Unpaved roads were observed throughout the study area.
Dust emissions from vehicles traveling on these roads have
3 4 5
been investigated and tested m previous studies. ' ' The
unpaved roads were divided into four types: gravel, graded,
unimproved, and primitive. Emissions for each type were
determined separately and then combined for each county.
The emission factors for each county and road type were
3
derived from an empirical equation. These emission factors
4 Development of Emission Factors for Fugitive Dust Sources.
U.S. Environmental Protection Agency. Research Triangle
Park, N. C. Publication No. 450-3-7-037. June 1974.
Investigation of Fugitive Dust - Sources, Emissions, and
Control. Prepared for EPA, Contract No. 68-02-0044, Task
No. 9. PEDCo-Environmental Specialists, Inc. May 1973.
2-9

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were then adjusted to account for variations in climatic
conditions throughout the study area (a climatic factor,
"C", based on average wind speed and rainfall, of 0.20
existed throughout most of the study area).
County-wide emissions for each road type are the pro-
6 7
duct of the vehicle-miles traveled (VMT), ' and the cor-
rected emission factors. Total study area emissions from
unpaved roads were estimated to be 6570 ton/yr.
Tailings
The aerial survey pinpointed six areas where tailings
piles existed. Later conversations with Utah State Indus-
trial Commission personnel verified these findings and
estimated the total acreage at 504 7 acres. Of this total
acreage, 5000 acres were encompassed by a tailings pond
which Kennecott Copper Company is presently operating. A
large part of this operating pond is wet, leaving only 20
percent or 1000 acres remaining dry (Dr. B. Heaney, Kenne-
cott Copper Co., personal communication, June 17, 1975).
Periodic aerial spraying with hygroscopic substances have
been conducted to control dust from the dry areas. Observa-
tions made under wind conditions greater than 20 mph (A.
Wisbith, PEDCo-Environmental, personal observation, June 17,
1975) showed that while most of the dry area was stable, a
6	Systems Planning Division, Utah State Department of High-
ways, Salt Lake City, Utah.
7
Major E. Elmer, State Maintenance Officer, Utah National
Guard, Salt Lake City, Utah, phone conversation.
2-10

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large amount of dust was seen blowing from areas where the
protective surface had been disturbed by vehicular traffic.
Fugitive dust emissions from tailings were determined
5
by applying an emission factor of 2.7 ton/acre. This value
was corrected by a factor of 0.2 for active ponds to account
for dust control measures and wetted areas. It was estimated
that active and inactive tailings ponds account for 2830
tons of fugitive dust each year in the study area.
Aggregate Storage
A natural abundance of sand and gravel at what had been
the shoreline of old Lake Bonneville attributes to the large
number of sand and gravel companies in the survey area.
Most companies stockpile their material during months of low
construction activities in anticipation of later increases
in volume. Airborne dust is generated by wind blowing
across the surface of these stock piles. In order to obtain
an accurate estimate of the dust produced, it was necessary
to determine the amount of aggregate materials normally
stored throughout the year. A list of companies was com-
8
piled from the Directory of Utah Manufacturers and local
telephone books. Questionnaires were mailed to 20 of the
companies listed requesting the quantity of material stored
and methods of dust control that were employed. A follow-up
phone call was made to each of the selected companies to
assure a prompt response. To account for those companies
Directory of Utah Manufacturers, Utah Department of Em-
ployment Security, Salt Lake City, Utah.
2-11

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not contacted, an average quantity stored (determined from
the collected data) was applied.
4
The emission factor (2.17 lb/ton) was applied to the
amount of material stored to yield the estimates of indi-
vidual county emissions from these sources. Total emissions
from aggregate storage for the study area were estimated to
be 2735 ton/yr.
Industrial Storage
Two other major storage pile areas that were noted in
the aerial survey were the slag pile area at Kennecott
Copper and the storage pile area at the U.S. Steel's Geneva
Works on the east shore of Utah Lake.
The active slag pile at Kennecott covers 86 acres but
consists of very stable material. Observations made under
wind conditions greater than 20 mph showed that the amount
of wind-blown dust produced from the pile was insignificant.
Therefore, this area was not included in the emission esti-
mates.
The storage pile areas at U.S. Steel consist of a
variety of both raw and waste materials in various sized
piles. In order to obtain an accurate estimate of the
potential fugitive dust emissions, a plant visit was made.
The area of individual piles was estimated from aerial
photographs provided by company personnel. A visit to the
storage area was also undertaken to determine dust poten-
tials of the various materials.
2-12

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4
Two emission, factors (3.5 and 10.4 lb/acre/day) were
employed depending on storage pile characteristics. These
values were adjusted for each of the material types stored.
It was estimated that storage pile emissions from the U.S.
Steel plant were 22 ton/yr.
Highway Construction
A limited amount of highway construction was in progress
during 1974, since the interstate highway system in the Salt
Lake City area was nearly complete. The mileage of highways
in each county along with the months of construction during
1974 were obtained from the Construction Office of the State
Department of Highways (S. Van Orman, May 28, 1975, personal
3
communication). An emission factor of 0.708 ton/acre/month
was employed to estimate the emissions from this source.
The emission factors take into account the climatic factor
for the study area. It was estimated that a total of 3338
tons in 1974 were generated from highway construction.
Residential-Commercial/Industrial Construction
Federal construction projects other than highway
construction activities were included with commercial/indus-
trial construction. The acreage under construction for each
category was obtained from the Systems Planning Division of
q
the Utah State Department of Highways and the following
Q
Salt Lake Transportation Study,System Planning Division,
Utah State Department of Highways.
2-13

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government agencies:
District Officer, Bureau of Land Management
Design and Construction Division, Bureau of Reclamation
Director, Utah Wildlife Resources Division
State Maintenance Officer, Utah National Guard
The total acreage reported for each county was reduced to an
amount estimated to reflect the actual area disturbed by the
construction activities.
Conversations with personnel for each of the county
planning commissions revealed that: one-half of the resi-
dential acreage would probably be disturbed during con-
struction; most residential construction is completed within
three months; all commercial/industrial acreage is usually
disturbed during construction but that the dust producing
phase is usually completed within six months. Based on
these estimates, the number of acre-months of each con-
struction type was determined, and an emission factor of
0.708 ton/acre/month was employed to estimate emissions.
Total estimated annual emissions were 12,417 tons of dust in
1974.
Sanding (Ice and Snow Control)
Sand and/or other materials used for ice and snow control
often remain on curbed roads after melting occurs. The
subsequent mechanical grinding by vehicular traffic produces
a substantial amount of dust for a few days until the mater-
ial is washed or blown from the road.
The mileage of curbed streets which are sanded annually
for snow control and vehicle-mile data for these streets
2-14

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were estimated from data obtained from study area highway
engineering departments. Based on an average snowfall
frequency (of one inch or more) of 25 days per year
(F.R. Van Houten, Utah State Department of Highways) and an
average of two days of dust producing conditions after each
snowfall, the dust produced from this source was estimated
by applying an emission factor of 0.17 lb/vehicle-mile"^
to the vehicle-miles for each county. Total annual emissions
from snow control from the study area were estimated to be
4848 tons.
SURVEY DATA
The raw data were collected and logged in tabular form
by source category for each county. This provided unifor-
mity and rapid comparison of relative source activity
levels. The data notebook is available in the project
files. County and study area totals of the appropriate
source parameters are summarized in Table 2-2.
Investigation of Fugitive Dust - Sources, Emissions, and
Control - For Attainment of Secondary Ambient Air Quality
Standards - Colorado. Prepared for EPA, Contract No. 16,
PEDCo-Environmental Specialists, Inc., November 1973.
2-15

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Table 2-2. FUGITIVE DOST EMISSION SOURCE PARAMETERS
BY SOURCE CATEGORY AND COUNTY 1974
Source category
Source paramterer
Weber
Davis
Salt I*ke
Utah
Tooele
Juab
Millard
Agriculture
Total acreage emitting
fugitive dust
8,980
9,022
22,740
29,138
6,322
22,872
20,263
Oapaved roads
Vehicle miles per day
4,834
3,622
13,958
13,799
165
964
1,278
Tailings and industrial
Storage
Acres of tailings,
waste, and storage


5,030
22
. 15
1
1.5
Aggregate storage
Tons of aggregate
302,948
229,461
1,453,253
535,409



Highway construction
Acres of highway under
construction
98
Neg.
278
12
Neg.
255
Neg.
¦Midential industrial/
oommercial construc-
tion
Acres under construction
122
192
3,458
291



Sanding for ice and
saav control
Vehicle miles per day
175,000
106,650
633,900
225,500

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REFERENCES
1.	"State of Utah Compilation of NEDS Data," prepared for
U.S. EPA Region VIII, Contract No. 68-02-1006, Task No.
2 GCA/Technology Division, December 1973.
2.	Utah Agricultural Statistics 1974, Utah State Department
of Agriculture, Salt Lake City, Utah.
3.	Supplement. No. 5 to Compilation of Air Pollutant
Emission Factors, Second Edition, U.S. EPA, Office of
Air Quality Planning and Standards Research Triangle
Park, N. C., April 1975.
4.	Development of Emission Factors for Fugitive Dust
Sources. U.S. Environmental Protection Agency.
Publication No. 450-3-74-037. Research Triangle Park,
North Carolina. June, 1974.
5.	Investigation of Fugitive Dust - Sources, Emissions and
Control. Prepared for EPA, Contract No. 68-02-0044,
Task Order No. 9. PEDCo-Environmental Specialists,
Inc., May, 197 3.
6.	Systems Planning Division, Utah State Department of
Highways, Salt Lake City, Utah.
7.	State Maintenance Officer, Utah National Guard, Salt
Lake City, Utah. Phone conversation - Major E. Elmer.
8.	Directory of Utah Manufacturers, Utah Department of
Employment Security, Salt Lake City, Utah.
9.	Salt Lake Transportation Study, System Planning Div-
ision, Utah State Department of Highways.
10. Investigation of Fugitive Dust - Sources, Emissions,
and Control - For Attainment of Secondary Ambient Air
Quality Standards - Colorado. Prepared for EPA,
Contract No. 16, PEDCo-Environmental Specialists, Inc.,
November 1973.

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TECHNICAL REPORT DATA
(/•least- read Instructions on the reverse before completing)
1 . Rl PORT NO. 2.
EPA-908/1-7 6-001
3. RECIPIENT'S ACCESS IOt#NO.
4 MI LL AND SUU7 ITLE
Fuqitive Dust Emission Inventory
Wasatch Front, Utah
5. REPORT DATE
July 1975
6. PERFORMING ORGANIZATION CODE
7 AUTHOR(S)
8. PERFORMING ORGANIZATION REPORT NO.
9. PERFORMING ORGANIZATION NAME AND ADDRESS
PEDCo - Environmental Specialists, Inc.
Suite 13, Atkinson Square
Cincinnati, Ohio 45246
10. PROGRAM ELEMENT NO.
11. CONTRACT/GRANT NO.
P8-n?-1375
Task Order No. 19
12, SPONSORING AGENCY NAME AND ADDRESS
U. S. Environmental Protection Aqency
Reqion VIII
1860 Lincoln Street
Denver, Colorado 80203
13. TYPE OF REPORT AND PERIOD COVERED
Ftnal
J4. SPONSORING AGENCY CODE
IS. SUPPLEMENTARY NOTES
16. ABSTRACT
This report contains emission estimates for fuqitive dust sources of air
pollution in Wasatch Front, Utah. Estimates for narticulate emissions
are made for the base year (1974), 1980 and 1985. Methodoloqies and data
sources are presented.
17. KEY WORDS AND DOCUMENT ANALYSIS
a. DESCRIPTORS
b. IDENTIFIERS/OPEN ENDED TERMS
c. COSATl Field/Group
Fuel Combustion
Emissions
Mobile Sources
Stationary Sources
Air Oualitv Maintenance
Analysis

18. DISTRIBUTION STATEMENT
Unlimited
19. SECURITY CLASS {This Report)
Unclassified
21.NO. OF PACES
26
2a5Encc^TsYs
22. PRICE
EPA Form 2220-1 (9-73)	j""
vf7:r*f ." •¦¦*»*v!tv

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