EPA-520/6-74-006
ENVIRONMENTAL SURVEYS OF THE
URANIUM MILLTAILINGS PILE
AND SURROUNDING AREAS
SALT LAKE CITY, UTAH
U.S. ENVIRONMENTAL PROTECTION AGENCY
Office of Radiation Programs
m
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ENVIRONMENTAL SURVEYS OF THE URANIUM MILL
TAILINGS PILE AND SURROUNDING AREAS,
SALT LAKE CITY, UTAH
DAVID L. DUNCAN
GREGORY G. EADIE
AUGUST 1974
URANIUM MINING AND MILL TAILINGS PROJECT
OFFICE OF RADIATION PROGRAMS—LAS VEGAS FACILITY
U.S. ENVIRONMENTAL PROTECTION AGENCY
LAS VEGAS, NEVADA
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FOREWORD
The Office of Radiation Programs of the Environmental
Protection Agency carries out a national program designed
to evaluate population exposure to ionizing and non-ionizing
radiation, and to promote development of controls necessary
to protect the public health and safety.
Within the Office of Radiation Programs, the Las Vegas
Facility conducts in-depth field studies of various radia-
tion sources (e.g., nuclear facilities, uranium mill tail-
ings, and phosphate mills) to provide technical data for
environmental impact statement review as well as needed
information on source characteristics, environmental trans-
port, critical pathways for population exposure, and dose
model validation.
This report summarizes the results of several field
studies conducted between 1967 and 1973 in Salt Lake City,
Utah, at and around the inactive uranium mill tailings site
formerly operated by the Vitro Corporation of America.
Readers of this report are encouraged to inform the
Office of Radiation Programs of any omissions or errors.
Comments or requests for further information are also invited,
W. D. Rowe, Ph.D.
Ve.pu.ty k&t>4.&ta.nt
^on. Rad-iat'Lon
iii
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ABSTRACT
At the request of EPA's Region VIII, environmental
surveys have been conducted for the Utah State Division
of Health's Occupational and Radiological Health Section
at the former Vitro Corporation uranium mill and in the
Salt Lake City, Utah, area. The surveys included measure-
ment of external gamma radiation and airborne radioactivity.
The results of the surveys indicated that: the external
gamma radiation levels on the tailings area exceed recom-
mended exposure limits for individuals in the general popu-
lation; ambient levels of radon over the pile and in
structures built immediately adjacent to the tailings pile
are above the currently recommended concentration for the
general population; the working level exposure in the adja-
cent buildings exceeds existing recommendations; tailings
material has been removed from the Vitro site by persons and
used around dwellings and businesses; and tailings material
has become windborne and deposited against dwellings and
structures in the vicinity. For general public areas (at
distances greater than one-half mile from the tailings pile)
the measured radon levels for the pile were not distinguish-
able from natural background levels and were found to be
within current guides.
On June 7, 1974, the U.S. Environmental Protection Agency
recommended to the State of Utah that:
1. The State of Utah establish the necessary regula-
tions to effect the disposition and control of radioactive
mill tailings. These should not rule out the possibility
of some acceptable use for any given closed mill site.
2. The Vitro uranium mill tailings pile should be prop-
erly stabilized to prevent migration of the tailings into
the environment and public ingress to the area should also
be prevented. The pile should be graded,, covered, properly
fenced, and controlled to prevent any migration of the tail-
ings into the surrounding environs by wind, water erosion,
or removal of tailings for unauthorized purposes.
3. The State of Utah consider possible remedial actions
for the businesses located on the west side of the Vitro uran-
ium mill tailings pile along South 900 West Street.
v
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ACKNOWLEDGMENTS
Grateful appreciation is expressed by the Environmental
Protection Agency to the many individuals of the Utah State
Division of Health; U.S. Atomic Energy Commission; Lucius
Pitkin, Inc.; and EPA's Region VIII and National Environ-
mental Research Center—Las Vegas. Without their help,
these studies would not have been possible. Special thanks
go to Messrs. Dennis Dalley, Louis Bunce, Blain Howard,
Jeff Throckmorton, Paul Smith, Jon Yeagley, George Boysen,
Charles Fitzsimmons, Dwayne Rozell, Robert Snelling, and Fred
Johns and also to Mrs. Lynn Hughes and Ms. Daphne Prochaska.
Vll
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CONTENTS
Page
FOREWORD iii
ABSTRACT v
ACKNOWLEDGMENTS vii
LIST OF FIGURES xi
PURPOSE 1
LOCATION AND DESCRIPTION 1
ENVIRONMENTAL SURVEYS 4
Sampling procedures 4
External gamma radiation 4
Field survey instruments 4
Thermoluminescent dosimeters (TLD's) 4
Mobile unit gamma radiation scanning surveys 4
Field personnel gamma radiation screening surveys.. 5
Air Sampling 6
Five minute radon in air sample 6
Integrated radon in air sample 8
Five minute radon progeny in air sample 8
Integrated radon progeny in air sample 8
Meteorology 10
Analytical procedures 10
Radon concentrations 10
Radon daughter concentrations 10
Integrated working levels 10
RESULTS —1967 to 1973 11
USPHS--1967 to 1968 11
USPHS Surveys—November 1970 11
EPA Gamma Scanning Surveys—April to September 1972.... 16
EPA Gamma Screening Surveys—August to October 1972.... 16
Radon and Radon Daughter Evaluation—May 1973 16
IX
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DISCUSSION OF RESULTS 33
Gamma Radiation Exposures on the Tailings Pile 33
Radon and Radon Daughter Concentrations 3^
Gamma Radiation Exposures in the Salt Lake Valley...... 40
RECOMMENDATIONS 43
APPENDIXES 46
REFERENCES,
120
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LIST OF FIGURES
9
12
13
Page
FIGURE 1 Vitro Uranium Mill Tailings Piles: 2
Salt Lake City, Utah
FIGURE 2 Indoor Radon Study--Gamma Screening 7
Form
FIGURE 3 Radon and Radon Daughter Decay Scheme
FIGURE 4 Location of Radon Sampling Stations in
Salt Lake City, Utah (1967-1968 PHS
Study)
FIGURE 5 E-500B Gamma Radiation Measurement in
mR/h: Salt Lake City, Utah: Vitro
Uranium Mill Site: Southeast Tailings
Pile (3 ft. reading/ground reading)
FIGURE 6 E-500B Gamma Radiation Measurement in 14
mR/h: Salt Lake City, Utah, Vitro
Uranium Mill Site: Southwest Tailings Pile
(3 ft. reading/ground reading)
FIGURE 7 E-500B Gamma Radiation Measurements in 15
mR/h: Salt Lake City, Utah, Vitro
Uranium Mill Site: Northwest Tailings
Pile (3 ft. reading/ground reading)
FIGURE 8 TLD Gamma Radiation Measurements in 17
mR/h: Salt Lake City, Utah, Vitro
Uranium Mill Tailings Pile
FIGURE 9 Gamma Survey Map, Suburban Sewage 18
Treatment Plant, Salt Lake City, Utah,
November 1970 (NE-148A reading in
yR/h) Ground Floor Main Building
FIGURE 10 Gamma Survey Map, Suburban Sewage Treat- 19
ment Plant, Basement Main Building,
Salt Lake City, Utah, November 1970
(NE-148A readings in yR/h)
XI
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LIST OF FIGURES
Page
_«•«£•—
9 n
FIGURE 11 Gamma Survey Map, Suburban Sewage ^
Treatment Plant, West Digester,
Salt Lake City, Utah, November 1970
(NE-148A readings in yR/h)
FIGURE 12 Gamma Survey Map, Suburban Sewage 21
Treatment Plant, East Digester,
Salt Lake City, Utah, November 1970
(NE-148A reading in yR/h)
FIGURE 13 Gamma Survey Map - Area Surrounding 22
the Vitro Uranium Mill and Tailings
Pile Site, Salt Lake City, Utah
FIGURE 14 Gamma Survey Map, Location 42325 23
(Vacant Lot) Salt Lake City, Utah
FIGURE 15 Gamma Survey Map, Location 42326, 24
Salt Lake City, Utah
FIGURE 16 Gamma Survey Map, Location 42327, 25
(Vacant Lot) Salt Lake City, Utah
FIGURE 17 Gamma Survey Map - Location 42328, 26
Salt Lake City, Utah
FIGURE 18 Gamma Survey Map, Location 42329, 27
Salt Lake City, Utah
FIGURE 19 Gamma Survey Map - Location 42330, 28
Salt Lake City, Utah
FIGURE 20 Gamma Survey Map - Location 42331, 29
(Vacant Land West of Tailings Pile)
Salt Lake City, Utah
FIGURE 21 Gamma Survey Map - Location 42332 30
(Vacant Land North of Tailings Pile)
Salt Lake City, Utah
FIGURE 22 Air Sampling Locations - May 1973 - 32
Salt Lake City, Utah
xn
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LIST OF FIGURES
Paqe
FIGURE 23 TLD Integrated WL Exposure - Salt Lake 34
City, Utah, May 1973
FIGURE 24 Radon and Radon Daughter Concentration 35
(pCi/1), Salt Lake City, Utah, (Location
75001) - May 1973
FIGURE 25 Radon and Radon Daughter Concentration 36
(pCi/1), Salt Lake City, Utah, (Location
75002) - May 1973
Kill
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PURPOSE
T'he following report summarizes the results of several
environmental surveys conducted between 1967 and 1973 in
Salt Lake City, Utah, at the inactive uranium mill site and
in the surrounding area.
LOCATION AND DESCRIPTION
The uranium mill in Salt Lake City, Utah, was operated
by the Vitro Corporation of America from May 1951 to January
1964. As of July 1970, the inactive uranium mill tailings
pile occupied about 107 acres of land, bordered on the north
by Mill Creek, on the east by the railroad, on the south by
3300 South Street, and on the west by South 900 West Street.
As shown in figure 1, the area of the mill site can be consid-
ered as a square with four quadrants. Three of the quadrants
are covered with tailings material and the northeast quadrant
is occupied by the Salt Lake City Suburban Sewage Treatment
Plant (SSTP). A portion of the land between the railroad and
the east boundary of the SSTP is also covered with tailings.
The original uranium mill was situated in the southeast
section, but the buildings have now been completely demolished.
All that remains of the old mill are some rubble and concrete
foundations of the buildings and the old mill stack. As of
May 1974, radioactive material has been spread over the old
mill site and contaminated material has also been placed on
what appears to be railroad right of way. It is estimated (1)
that the Vitro uranium mill tailings piles contain 1,666,000
tons of material with an average radium-226 concentration of
1100 pCi per gram of tailings material (or about 1670 total
curies of radium-226).
There is a narrow access road from 3300 South Street
leading to the Suburban Sewage Treatment Plant and a shallow
stream flows parallel to this road, thereby creating a bound-
ary line between the southeast and the southwest sections
of the tailings piles. There is no gate on this access road
and it is through this open entranceway that most of the pub-
lic access to the tailings piles is gained. The southern
one-half of the southeast section of the tailings pile has been
covered with about a foot of "clean" dirt as a result of road
construction in the area.
1
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Figure 1. Vitro Uranium Mill Tailings Piles: Salt Lake City, Utah
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The southern one-half of the southwest section of the
tailings piles has been covered with concrete, dirt, and
asphalt road debris. Bordering the southwest section of the
pile, on South 900 West Street, are four business buildings.
These structures were built against, and possibly over, the
tailings pile. An eight-foot-high chain link fence has been
erected on the south side of the tailings pile (i.e., along
3300 South Street) and along a portion of the east and west
sides of the tailings pile. The fence ends at the northern-
most building on the west side of the piles; therefore, entry
to the tailings piles area may also be gained at this point.
Indeed, the abandoned tailings piles have become a motorbike
and horse riding course for the area youngsters.
Most of the tailings piles surface remains uncovered
and, as a result, a slick, muddy surface is formed after rain
or snow storms. When the pile surface dries out, the tail-
ings materials are subject to wind migration and the materials
are easily spread to offsite areas surrounding the mill site.
Grass cover or volunteer vegetation growth has not occurred
over the entire tailings pile surface, although some of the
dikes are covered with growth. It is also apparent that at
times local inhabitants have removed portions of the tailings
material for various uses around their private dwellings and
buildings. Trash is also being discarded at the mill site.
In 1972-1973, construction was initiated in the upper
half of the southwest section of the tailings pile for a pro-
posed automobile racing track. An oval-shaped pit about 15
feet deep, 200 feet wide, and 500 feet long was dug out of
the tailings material. The west end of the pit is about 100
feet from South 900 West Street, at the fence boundary of the
Won-Door Corporation Assembly Building (Location #42330).
The tailings material which was removed to create the pit was
piled on the original pile surface to form hills from 10 to
20 feet in height, surrounding the pit. After a rain storm,
the eastern portion of the pit floor is covered with several
inches of water. The pit floor is at the level of the street;
i.e., the original ground level before tailings material was
placed on it.
A stream formed by the effluent discharged from the
Suburban Sewage Treatment Plant flows between the southwest
and northwest sections of the pile. Water flow is away from
the tailings pile. In November 1970, the northern one-half
of the southeast section of the tailings pile was covered
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with water; and in May 1973, the northwest section of the pile
was partially covered with water. This water was from oper-
ations at the Suburban Sewage Treatment Plant. Except for a
few strands of barbed wire fence, there is no access control
to the northwest section of the pile.
The Suburban Sewage Treatment Plant, which forms the
northeast quadrant of the site, is entirely fenced and is a
restricted access location, usually limited to SSTP operating
personnel.
ENVIRONMENTAL SURVEYS
Sampling procedures
External gamma radiation
Gamma radiation exposure measurements were obtained using
portable radiation detection instruments. Two types of survey
meters were used at different times during the studies. An
Eberline Instrument Corporation, Model E-500B, portable Geiger-
Mueller survey meter was used and the gamma exposure rate was
reported in units of mR/h . Also used for more sensitive gamma
surveys was the NE-148A Baird Atomic Scintillometer and these
results were reported in units of yR/h.
The.lmo£u.mJ.ne.Ac.e.nt doA4.me.te.stA (TLV'A)
In addition to the portable survey instruments, TLD ' s
were used in two studies (1967-1968 and 1970) to evaluate the
external gamma exposure dose. EG&G, Model TL-12 , TLD capsules
were used and returned to the laboratory* for analysis. The
TLD results were reported in units of mR/h.
Mobile, unit gamma iad.siati.on Ac.anni.ng Au.tive.yA
The EPA provided a contract to the U.S. AEC to conduct
a mobile gamma scanning survey in communities surrounding
*EPA, National Environmental Research Center—Las Vegas
(NERC-LV) at Las Vegas, Nevada (formerly USPHS, Southwestern
Radiological Health Laboratory).
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uranium mill tailings sites in the Western United States.
These scanning surveys were performed in Salt Lake City, Utah,
starting in April 1972.
The mobile gamma scanning unit was equipped with two
shielded four-inch by five-inch sodium iodide crystals. The
signal from the crystals was recorded on a strip chart recorder
and addresses or other notes were added to the chart by the
operator. This chart was then sent to the Lucius Pitkin*
Office in Grand Junction, Colorado, where an anomaly report
was prepared from the chart. An anomaly is defined as any
location where the recorded counts per second (c/s) exceed
the determined background c/s for that location by 50 or more
c/s. The anomaly report was sent to ORP-LVF** and, in turn,
forwarded to the Utah State Division of Health.
c\a.mma fiaat^on 4 eld en-ng
Survey teams, utilizing the gamma scanning report, per-
formed field radiation surveys in Salt Lake City. These
surveys were performed between August and October 1972.
The field teams were composed of two surveyors; each
person was equipped with a NE-148A Baird Atomic Scintillometer .
These instruments were calibrated with a National Bureau of
Standards certified radium needle, and a five item field check
was performed each day to determine if the instrument was
functioning properly. If the instrument did not operate within
preset ranges, it was not used.
The NE-148A contains a one-inch by one-and-one-half inch
sodium iodide crystal; thus, the measurements obtained are
not "true" exposure rates. Also, because of the size of the
crystal, the meter indication represents only terrestrial
radiation. The meter reading can be corrected to a true
value (T) by T (yR/h) = S (yR/h) x 0.56 + 0.9, where S =
NE-148A meter reading.
* Lucius Pitkin, Inc., is a prime contractor for the U.S. AEC,
Grand Junction Operations Office.
**The EPA, Office of Radiation Programs, Las Vegas Facility
(ORP-LVF) is a tenant organization located at the NERC-LV.
The ORP-LVF now conducts the uranium mill tailings monitoring
previously carried out by the NERC-LV.
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Thus, a reported 60 yR/h becomes a corrected 34.5 yR/h,
or a net corrected 24.5 yR/h (assuming 10 yR/h background).
One can obtain a total exposure rate by adding the corrected
value, in this case, 34.5 yR/h, and a known or assumed cosmic
rate. The previously mentioned TLD and E-500B readings in
mR/h do not have to be corrected.
A survey was performed at a location only after permis-
sion was obtained from the owner or occupant of the property.
If persons were present, but permission was not obtained,
the location was listed as a refusal. Suspected tailings
use might have been determined while approaching the property
or structure to request permission and would be noted. Once
permission to survey was obtained, one surveyor would survey
inside the structures while his partner would survey the
surrounding property. The high inside gamma instrument read-
ing (HIG), high outside (HOG), and low outside (LOG) were
recorded on the Indoor Radon Study-Gamma Screening Form.
A copy of this form is included as figure 2. If tailings
were found on the property, but more than 10 feet from a
habitable structure, the location is called a tailings away
or TA location. The tailings use code would be "2." If
tailings were found within 10 feet of a habitable structure,
it is a TU location (under or up against). In this case,
the tailings use code would be "1" or "3." If instrument
readings inside a TU structure exceeded 20 yR/h, a gamma map
was made. In many instances, a map was not required; but a
sketch showing the location on the property of readings found
above 20 yR/h was made. This would be indicated by a "7"
in the "Gamma-Map" block on the form (figure 2), and the
sketch would be placed on the back of the survey form. If
ore or other radioactive material was found, the reading from
the material was not recorded as the HIG or HOG, but appeared
in the "Free Punch Comment" on the survey form. The survey
form was then checked by an EPA field supervisor, a specific
location number was assigned to each location, and the form
was sent to the ORP-LVF for card punch and data storage.
Air Sampling
f-i\}^ m4.nu.tn. ladon i.n a
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CARD
LOCATION Ho.
CITY
COUNTY
DATE FORM COMPLETED
STATE MONTH . YEAR
3456
7 8 9 10
ADDRESS
11 12 13 14 15 16 17 18 19
NUMBER
ra.
NAME
•
20 21 22 23 2k 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
(Last Name First - Initials for first and middle name-husband and wife)
OCCUPANTS
NAME
-hugti
42 ^3' 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
OWNERS ^Last Nama First - Initials for first and middle.name - husband and vife)
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75
CLASSIFICATION «»•«« c.™,™™ (OWNERS ADDRESS
SCREEN
77
0. Vacant Lot
1. Residence single family
2. Multiple «4 families)
3. Apartment CH)
4. Motel, hotel, or hospital
5. Single business (in one unit)
6. Multiple business unit(connected)
7. School
8. Church
9- Other
78
0. None
1. Completed
2. Occupant refusal
3. No - ask owner
4. Owner refusal
5. No one to contact
6. No bad address
7. Outside, only
8. Special scheduling
9. Other
TAILINGS USE
GAMMA MAP
79 80
0. None 0. None
1. Under 1. Yes
2. Away 2. Occupant - No
3. Undcr-Away 3. No ask ovmer
4. Possible 5. Owner - No
9. Unknown 5. No one to .see
6. Mot required
CARD
LOCATION NUMBER
CITY
COUNTY
B
1
LOCATION
CODE
HOG
1
234
Township
16 17
1 1
56 7 8 9 10 11 12 13
Section 1/4 Sec. Block Owner Number
iH
1
19 20 21
LOO
\
n i i L
22 24 25 26 27 2U
HIQ
i i i
STATE
29 30
LOCATION
mo
31
32 33 3^ 35
TYPE OF HOUSE
36 37 38 39 »»0
NUMBER OF LEVELS
41 ^2 43 44 45
MATERIAL
1. Basement
2. Slab on grade
3. Crawl space
9. Unknown
FREE PUNCH COMMENT
1.
2.
Masonry
Non masonry
50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
0. Bedroom
1. Living Room
2, Kitchen
3. Den - Family Rra.
4. Dining Room
5. Attached garage
6. Burenent
7, Work shop
0. Other
Pi More than one
location
66 67 68 69 70 71 72 73 74 75 76 77 7« 79 80
Figure 2. Indoor Radon Study-Gamma Screening Form
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fiadon in
A continuous, low-volume sampling system was used to
obtain an integrated radon sample. (2) This sampling technique
consists of drawing filtered air through a small, low-volume
pump (usually less than 10 ml/min sampling rate) into a 30-
liter Mylar bag- Usually, a continuous 48-hour air sample was
collected and returned to the laboratory for radon-222 analysis
minute fiadon pfioQ^nij -in atn.
The short-lived particulate radon daughter, products
(figure 3) were sampled by drawing air through an Acropor
filter (Type AN-450, manufactured by the Gelman Instrument
Corporation) having a 0.45 ym pore size. Each sample was
collected for five minutes at a flow rate of about one cfm.
The particulate sample was collected separately from, but
simultaneously with, the five-minute grab radon air sample
in order to compute the percent equilibrium and the radon
daughter to radon concentration ratios .
1 ntdQiat&d ^tadon pfioQiny -in ai.fi bamptz.
Integrated radon progeny working levels were measured
using the TLD-Type II Air Sampler. (3) The detector unit
consists of a filter holder containing a membrane filter*
and two thermoluminescent dosimeters (TLD's).** One TLD
disc is supported above the membrane filter and is exposed
to the combination of alpha, beta, and gamma radiations emit-
ted by the radon progeny collected on the filter. The second
TLD disc is separated from the first TLD disc by a stainless
steel washer that absorbs the beta particles that pass through
the first TLD disc. The second TLD disc, therefore, responds
to external gamma radiation sources and hence is the radon
progeny background subtraction correction. Calibration factors
are used to convert the TLD readings (nanocoulombs) to working
level (WL)t exposure.
All TLD's were returned to the ORP-LVF for read-out and
data analysis.
* Millipore Corporation, DAWP01300 (13 mm dia) 0.65 ym pore size
**Isotopes, Inc., Teflon disk impregnated with Harshaw CaF2:Dy
powder (30% by weight).
t Working Level, WL, is defined as any combination of short-
lived radon daughters in one liter of air that will result in
the ultimate emission of 1.3 x 105 MeV of alpha energy by
8 decay to lead-210 (RaD).
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5.48 MeV
Po 218
(RaA)
3.05m
7.69 Me V
Pb210
(RaD)
22yr
-*+•
Bi 210
(RaE)
5.0d
"^
x
Po210
(RaF)
138d
5.30 MeV
Figure 3. Radon and Radon Daughter Decay Scheme
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Meteorology
A mobile weather station having two separate meteorolog-
ical data-gathering stations was used to obtain information on
the wind speed, wind direction, and the ambient temperature.
The meteorological trailer is powered by a propane generator
and the data are automatically recorded on punch tape which
is later read out to provide the meteorological information.
Data were usually collected from two locations at 15-minute
intervals during the study period. Barometric pressure
changes were measured with a standard aircraft altimeter
which was reset to a reference altitude.
Analytical procedures
Radon concentrations
The radon analysis was performed by cryogenic separation
and subsequent alpha scintillation counting. In some cases,
a scintillation cell was filled directly from the flask and
counted.
The radon decay is calculated to the midpoint of the
sample collection period and the radon results are reported
in units of picocuries per liter (pCi/1). The decay calcula-
tions are performed by a computer program designed for a
CDC-6400.
Radon daughter concentrations
The particulate air filter sample was immediately gross
alpha counted in the field utilizing a specially designed
alpha scintillation counter. The dpm/cpm for the counter is
obtained from certified sources. The radon daughter concen-
trations and the working level is then calculated using the
Thomas equations for the modified Tsivoglou technique. (4)
These equations have been incorporated in programs for both
the Wang 320K and 362E calculators.
Integrated working levels
The WL exposure measured by the Radon Progeny Integrating
Sampling Unit (3) is determined by the nanocoulomb readout
from the TLD's. This measurement of stored charge is obtained
with a Harshaw model 2000 reader. The nanocoulomb readout
is converted to a WL value by utilizing a working level liter-
per-nanocoulomb conversion factor (WL-l/nC) which is obtained
by sampling in a known WL atmosphere. The known WL atmosphere
is calculated using an alpha spectroscopy system.
10
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RESULTS--1967 TO 1973
USPHS--1967 to 1968
From October 27, 1967, through October 9, 1968, a joint
study between the U.S. Public Health Service (USPHS) and
the U.S. Atomic Energy Commission (AEC) was performed in
cooperation with the Utah State Division of Health (UDH).
Environmental surveys were conducted during the project to
evaluate the public health aspects of atmospheric concentra-
tions of radon-222 in the vicinity of the Vitro uranium mill
tailings pile site. The results of this study were reported
in "Evaluation of Radon-222 Near Uranium Tailings Piles,"
U.S. Department of Health, Education, and Welfare, Public
Health Service, Report DER 69-1, March 1969. (Figure 4
and tables I through III have been taken from the DER 69-1
report.)
Figure 4 shows the locations of the radon sampling sta-
tions used in the 1967-1968 PHS Study. Table I contains the
radon concentrations determined for the 48-hour integrated
air samples during various sampling periods. The yearly
average concentrations for each sampling location are pro-
vided in table II. Table III contains the results of the
thermoluminescent dosimeters (TL-12's) used to evaluate the
external gamma radiation exposure rate.
USPHS Surveys—November 1970
In November 1970, personnel from the National Environ-
mental Research Center—Las Vegas (NERC-LV) conducted a com-
prehensive gamma survey of the entire uranium mill tailings
pile site and the Suburban Sewage Treatment Plant site. A
grid system survey, using both portable gamma survey meters*
and thermoluminescent dosimeters (TL-12's), was completed.
This study was initiated in order to record the gamma exposure
rates over the tailings material before covering the piles
with "clean" dirt from the proposed widening of 3300 South
Street. The cover work has not been completed to our knowl-
edge; thus, the second (post stabilization) part of the
survey has not been performed.
The results of the November 1970 gamma surveys are shown
in figures 5 through 7. The portable instrument measurements
are given for three feet above ground surface and at the
*Eberline Instrument Corporation, Model E-500B.
11
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'(.f9 95(0.29)
35(0.68) '*»/4
93(0^24)
TAILINGS ..
r~r\ \'-'•'$ +
\ I ' ' li. 82(4.2)
C I 81(10.0)
84(0.39
SALT LAKE CITY
UTAH
00 STATION NUMBERS
(0.00) RADON-222 pCi/lit.r
(AVERAGE CONCENTRATION)
81
82
83
84
85
86
91
92
93
94
95
96
Center of tailings (700 West 3300 South).
Sewage Plant, 650 West 3300 South.
American Smelting § Refining Company, Hygiene §
Research Department, 3422 South 7th West.
D. B. Harmon, 1080 West 3300 South.
Bonneville News Company, 965 Beardsley Place.
J. A. Skogg, 1501 West Claybourne Avenue.
D. Bolton, 570 West 3740 South.
Chris Body and Paint Shop Inc., 3152 South 2d West.
Tuloma Gas Products Co., 201 West 27th South.
Aluminum Manufacturing § Supply Co., 1809 South 8th
West.
A. H. Higham, 105 Kestwood Avenue.
Salt Lake City Health Department, 610 South 2d East.
Figure 4. Location of Radon Sampling
Stations in Salt Lake City,
Utah (1967-1968 PHS Study)
12
-------
Figure 5. E-500B Gamma Radiation Measurements in mR/h: Salt Lake City,
Utah, Vitro Uranium Mill Site: Southeast Tailings Pile
(3 ft. reading/ground reading)
13
-------
Figure 6. E-500B Gamma Radiation Measurements in mR/h: Salt Lake City/
Utah, Vitro Uranium Mill Site: Southwest Tailings Pile
14 (3 ft. reading/ground reading)
-------
Figure 7. E-500B Gamma Radiation Measurements in mR/h: Salt Lake City,
Utah, Vitro Uranium Mill Site: Northwest Tailings Pile
(3 ft. reading/ground reading)
15
-------
ground surface. All units are reported in mR/h.* Figure 8
shows the results of the TLD-gainma exposure rate measurements;
all units reported in mR/h.*
Also, in November 1970, a gamma survey was completed^
at the Suburban Sewage Treatment Plant to determine if tail-
ings had been used in the plant construction. The gamma
survey maps for several SSTP structures are shown in figures
9 through 12. These results are also given for three feet
above ground surface and the ground surface; all units are
reported in uncorrected yR/h (meter indication)** since the
more sensitive NE-148A scintillometer was used for these
surveys. In addition to the detailed gamma surveys conducted
at the SSTP, both the five-minute radon air sample and the
five-minute radon progeny particulate filter sample was col-
lected in the main building of the SSTP. The results of
the air sampling are presented in table IV.
EPA Gamma Scanning Surveys—April to September 1972
The gamma radiation anomaly list prepared from the Mobile
Gamma Scanning Surveys appears in appendix B.
EPA Gamma Screening Surveys—August to October 1972
The surveys around the Vitro uranium mill site were
performed in August 1972. The results of these field surveys
are shown in figures 13 through 21. The gamma measurements
at three feet above ground surface and at the ground surface,
as indicated by a NE-148A meter reading, are reported in
"yR/h." Figure 13 shows the gamma surveys of the four busi-
ness areas located against the southwest section of the
tailings piles along South 900 West Street. Figures 20 and
21 show the areas to the west and north of the mill site.
Radon and Radon Daughter Evaluation—May 1973
During this period, May 2 to 22, 1973, an extensive
radon air sampling program was conducted at the site of the
inactive Vitro uranium mill tailings pile. This study was
conducted at the request of the Governor of the State of
Utah. This request was made to an EPA Region VIII represen-
tative at a special meeting held in the Governor's office on
April 11, 1973. The Governor wanted additional data to
* These measurements do not need to be corrected,
**True yR/h = Reported yR/h x 0.56 + 0.9.
16
-------
~~ RftCE TRACK PIT
Figure 8. TLD Gamma Radiation Measurements in mR/h:
Utah, Vitro Uranium Mill Tailings Pile
Salt Lake City,
17
-------
60 35 40_ 40
80 40 35 40
60
80
50
60
50
60
9 21 10
8 16 9
11 11 10
10 7 10
11 9
TT 9
12 8 10
1199
16 13 15
12 13 12
15 13
13 12
9 10
9 10
1
o
35^ 40 40 40 35
35 40 40 40 35
10
LUNCH ROOM
. 10
8 10
8 8
8 8
STAIRS
10 10
10 10
15
-rr OFFICE
15
15 15
15 15
80 80 50 j 40
90 90 50 j 40
I
13
12
14
14
10
10
Ji <
11 ;>
>
z
10
9
13
15
11
21
11
TT
MEN
11
11
1 WOMEN
9 9 J0_
7 10 10
11 11 11
11 11 11
11
11
40
40
JP_
10
14
12
10
9 10 9 9
9 10 9
PUMP ROOM
9
10 8 11
8 9
25 7 ]Q 10
25 10 9 9
40 30 ! 40 60 80
40 30 j 40 70 SO
1
Legend:
SO = 3 ft. reading >iR/h
9O = ground reading ^R/h
10
1 1
11
10
10
B
50
Jo
j
1
70
70
True MR/h = reported p.R/h x O.56 -f O.9
Figure 9, Gamma Survey Map, Suburban Sewage Treatment Plant, Salt Lake City,
Utah, November 1970 (NE-148A readings in pR/h) Ground Floor Main Building
-------
10
1 1
8
~
8ENCH
n
17
8
•^•M
9
T I I -A- _8_
I I
n
12
13
9
• J.
I 8
6
^•MB
7
STAIRS
JO.
9
8
f^^mm
8 I
6
6
_6_ 6
6 4
PUMP ROOM
6
8
8
Legend:
1O = 3 ft. reading MR/h
11 = ground reading ,uR/h
True juR/h = reported |jR/h X O.56 + O.9
Figure 10.
Garama Survey Map, Suburban Sewage Treatment Plant, Basement Main Building,
Salt Lake City, Utah, November 1970 (NE-148A readings in yR/h)
-------
15
12
17
17
Legend:
8O = 3 ft. reading juR/h
12O = ground reading >j.R/h
True >4R/h = Reported >j.R/h x 0.56 + O.9
Figure 11. Gamma Survey Map, Suburban Sewage Treatment Plant, West Digester, Salt
Lake City, Utah, November 1970 (NE-148A readings in yR/h)
o
CN
-------
70
70
_L
7
Legend:
TO = 3ft. reading ju/R/h
9O = ground reading
True /uR/h = reported juR/h x O.56 + O.9
Figure 12 Gamma Survey Map, Suburban Sewage Treatment Plant, East Digester,
Salt Lake City, Utah, November 1970 (NE-148A reading in uR/h)
-------
-N-
VACANT LOT
110
90 80
80 90
160
80
110 110
"90" 90
JJO.
-55*— -=-100,,
300 Tolr
250 300
200
}50
180 onn
200 "onn
AW 200
200
300 .300
250 250
150 250
100 nQ
90 150
120
100
SOUTH 9OO V
VEST STREET
110
19 38 1
19 25 1
20 27 25 :
17 3
VACANT LOT ',
70 70
60 120 120*°"
~ifin ififi" MILL CREEK
90 ROAD
200
!fe — — 1 SQ-.I .- -gg!-.S."" '
MILL CREEK
1700
300 2000
600
1500 2500 400
250 3000
250 800
500
250
100 600
500
| 1 250 250
1 1 "207
n-23£ 200 600
:°r i so 400
180 42. m ^
|IMTI — i m -m^JM
Di
k
.*>
100
100
60
•^•^H^
i^f**=^mx
15(
201
i RG R.R.
15
12
12
J
_U
. m=^S-8
) 100
f 90
SEWAGE 1
100(
100<
Legend:
400 = 6
finft — -q
25O = 5
200 = 3
15O = g
True uR
— .
33OO SOUTH STREET
Figure 13. Gamma Survey Map - Area Surrounding the Vitro Uranium Mill
and Tailings Pile Site, Salt Lake City, Utah
-------
0)
o
c
H
I
(0
o
o
m
0)
H
0)
H
3J
m
m
H
LOCATION
#42326
90
1 10
no
SOUTHWEST
TAILINGS PILE SECTION
VACANT LOT
110
90
250
33OO SOUTH STREET
OJ
Legend:
3OO = 6 ft. reading
25O = 3 ft. reading
25O = ground reading
9O = ground reading
True /uR/h = reported
x O.56 + O.9
Figure 14. Gamma Survey Map, Location 42325 (Vacant Lot) Salt Lake City, Utah
-------
CO
o
m
en
0)
-i
3
m
m
210
180
200
TSO"
250
210
250
200
PARKING LOT
130
no
30 50
30 40
45 65
45 50
55 50
40 40
*
45 50
40 60
Location #42326
60 55
55 55
40
45
40 35 30
35 35 30
135
110
VACANT LOT
Legend:
19O = 6 ft. reading 145 = 3 ft. reading
14O = 3 ft. reading 13O = ground reading
120 = ground reading
True juR/n - reported .wR/h x 0.56 + O.9
190 145 200
210
150
150
17
15
140 130 150
120 120
300
250
200
Figure 15. Gamma Survey Map, Location 42326, Salt Lake City, Utah
-------
0)
o
c
H
I
(0
o
o
m
en
H
cn
;D
m
m
H
LOCATION #42328
200
180
VACANT LOT
250
230
210
300
250
200
230
150
120
170
750
250
200
LOCATION #42326
Legend:
2OO = 3 ft reading
18O = ground reading
23O = 6 ft. reading
15O = 3 ft reading
12O = ground reading
True u.R/h = reported MR/h x °-56 + °-9
SOUTHWEST
TAILINGS PILE
SECTION
Figure 16. Gamma Survey Map, Location 42327 (Vacant Lot) Salt Lake City, Utah
-------
en
o
c
H
I
(D
O
O
S
m
0)
H
3J
m
m
1140
120
N-
1
60
50
75
60
55
50
50
50
no
~90~
220
160 160
140 140
70 70 70
60 60 60
90 80
80 60
LOCATION #42328
75
75"
90 75
70 65
60 60 45
50 50 30
240
80
70
90
70
60
50
210
400
270
240
180
110
110 160 110
100 120 110
ion
Legend:
11O = 3 ft. reading 16O = 6 ft. reading
9O = ground reading 12O = 3 ft. reading
1OO = ground reading
True ^uR/h = reported juR/h x O.56 + O.9
Vi
o
Figure 17. Gamma Survey Map - Location 42328, Salt Lake City, Utah
-------
-N-
0)
O
c
H
I
(0
O
O
m
0)
H
0)
H
3
m
m
H
190
160
150
140
220
180
150
250
300
300
400
180
150
130
180
155
120. T60~
150
no
140 J8
210 2C
290
210
290
280
300
250
300
240
280
210
250
0
0
•
300
350
300
300
200
250
150
180
Legend:
3OO =
4OO -
True u.F
400
250" 350 550
210 300 500
no
200
140
190
no
180
180
200
-122.
220
210
140
190
140
190
50
60
^"""^T™"
280
lf-70
45
40
60
80
120 140 140
110 110 120 160 90
120 80
70 100 70
80 100 50
60 50 50
50 35 40
40
50 50 50 50 ~35~
40 60 40 45
LOCATION #42329
JiP_ WORK AREA
60
45
80 45 40
110 50 50
45
60
55 40
65 45 60
40 45
100 40_ _40_ _50
100 45 35 35
no ]3o no
no 100 130
3 ft. reading
ground reading
R/h = reported jj
35Q = 6 ft. reading J5_0_
90 190
no 210
70
90
65
75
180
190
110
100
60
80
130 130
190 170
190
210
'^9O - 3 ft. reading 290 ^^~ — '
24O = ground reading 24Q
R/h x O.56 + O.9
NJ
Figure 18. Gamma Survey Map, Location 42329, Salt Lake City, Utah
-------
0)
o
c
H
I
(0
o
o
$
CO
H
CO
H
m
m
_Z£0 1200
600 1500
73W
500 700
400 500
150
110
250
200
300
2
-------
160
"80
90
VACANT LOT
100
80
90
_400.
300
250
VACANT LOT
200
150
MILL CREEK ROAD
120
100
80
JO
22
50
120
100
100
250
200
200
250
Legend:
16O = 6 ft. reading 2OO = 3 ft. reading
8O = 3 ft.i reading 25O = ground
9O = ground reading reading
True juR/h = Reported AiR/h x O.56 + O.9
1700
2000
NORTHWEST TAILINGS PILE SECTION
450
400
SMALL CREEK
SOUTHWEST TAILINGS PILE SECTION
vo
Figure 20.
Gamma Survey Map - Location 42331 (Vacant Land West of Tailings Pile)
Salt Lake City, Utah
-------
(fl
o
c
H
1
O
O
£
m
CD
— i
en
H
33
m
m
-i
19
19
21
45
50
50
50
70
70
60
120
120
70
-^ — ^-^.
28
9 S
T7
Legend:
19_ = 6 ft. reading
19 = 3 ft. reading
21 — ground reading
5O = 3 ft. reading
5O = ground reading
True >jR/h = reported HR/h x O.56 + O.9
70
70
60
120 120
120 100
70 60
MILL
, _ ;
IZ '
,
25. I
17
20
:
1
i
J-5
:; "^2"
: 15
D & R G RAILROAD *' J_5_
ii 12
' '
iq
T7
l 19
>
80 50 22.
70 60 20
100 _60_
100 60
60 70
CREEK ROAD
V— ^-"^
^Z^^~'V""^~' " "-^ MILL CREEK
NORTH
,/VF-ST TA
^ ^_ ^__^^^_ /""nir^ ~~ —
^ ^-^_^— — ~.^^-
II INfiS Pll F .SFCTIDM
Figure 21. Gamma Survey Map - Location 42332 (Vacant Land North of Tailings Pile)
Salt Lake City, Utah
-------
evaluate the potential radiological hazards associated with
the operation of an automobile race track proposed for the
southwest section of the tailings pile. As described earlier,
by April 1973, a pit had been dug out of the tailings pile,
resulting in an excavation about 15 feet deep, 200 feet wide,
and 500 feet long. The tailings material removed from the
pit was piled on the surrounding pile to form hills about
10 to 20 feet high. This study was completed by EPA, ORP-
LVF, with the assistance of the Utah State Division of Health
and EPA, Region VIII personnel. Included were radon and
radon daughter evaluations at the tailings pile, the Subur-
ban Sewage Treatment Plant, and in the four business buildings
on South 900 West Street.
Figure 22 shows the air sampling locations selected for
this study. Location #75001 was the station setup on the
floor of the race track pit dug out of the tailings pile.
This station was located about 50 feet away from the wall
of the pit. The pit was approximately 15 feet deep at this
point. Portions of the pit floor were covered with from one
to six inches of water during the sampling period. Location
#75002 was an indoor station in the "lunch room" of the
Suburban Sewage Treatment Plant. The SSTP is surrounded
by the tailings pile on its south and west boundaries, but
none of the habitable SSTP buildings appear to have been
constructed over uranium mill tailings. Location #75003 was
the station setup on the southwest section of the tailings
pile. Most of the area surrounding Location #75003 was cov-
ered by dirt, concrete, and asphalt road debris. Location
#75004 was the station setup at the perimeter fence between
the Won-Door Corporation and the tailings pile at the south-
west end of the excavated pile.
Four stations were located indoors at the business build-
ings on South 900 West Street. Location #42326 was an office
reception area of the Sierra Corporation at 3275 South 900
West Street. Location #42328 was the main stock room of
Inventory Sales at 3227 South 900 West Street. Location
#42329 was the main assembly room of the Won-Door Corporation
at 3215 South 900 West Street. Location #42330 was the rear
assembly area of the Won-Door Corporation at 3195 South 900
West Street.
Several different radon air sampling methods were used
at the various locations. A TLD-Type II air sampler was
installed at each of the locations to measure the integrated
radon progeny working level. An integrating air sampler for
the determination of 222Rn was used at locations #75001,
31
-------
11
SOUTH 9OO WEST STREET
#42326
#42328
#42329
S4233O
#75004
o
u
CJ
0)
0
c
0)
H
31
m
m
H
#75003
O
SOUTHWEST TAILINGS PILE
RACE
TRACK
PIT
S75OO1
o
o
METEOROLOGICAL TRAILER
EPA / NERC -LV
ACCESS ROAD
SOUTHEAST TAILINGS PILE
NORTHWEST
TAILINGS PILE
#75002
SEWAGE
PLANT
Figure 22. Air Sampling Locations - May 1973 - Salt Lake City, Utah
-------
#75002, #75003, and #75004. A "grab" radon sample was col-
lected for five minutes by drawing filtered air into an
evacuated glass flask (2-liter volume) at locations #75001,
#75002, #42326, #42328, #42329, and #42330. Simultaneously
with the radon grab sample, short-lived radon progeny
concentrations were determined by collecting a five-minute
particulate air sample. The working level exposure was
then determined by using the Thomas equations for the modi-
fied Tsivoglou method.
The results of the various air sampling methods for
each of the locations are shown in tables V through XII and
in figures 23 through 25.
Tables XIII and XIV show the comparisons between the
various radon sampling methods for locations #75001 and
#75002.
DISCUSSION OF RESULTS
Gamma Radiation Exposures on the Tailings Pile
The gamma radiation measurements which have been made
on the pile are provided in table III and figures 5 through
8. The average TLD measurement for the 1967-68 on-pile
sampling station was 1.1 mR/h. A grid system was established
in 1970 with 13 stations from west to east, which were about
150 feet apart; 13 stations were also established from north
to south, which were about 250 feet apart (figure 8). E-500B
measurements were taken at each grid intersection and TLD's
were placed at alternating grid intersections. As table XV
shows, there is very good agreement between the TLD measure-
ment (TLD mounted on a stake three feet above the surface)
and the E-500B measurement (number in parentheses) at the
same location; thus, the E-500B measurements do not require
correction. The average for the northwest pile at the 12
locations where TLD and E-500B measurements were made (table
XV) was 0.57 mR/h (TLD) and 0.53 mR/h (E-500B). The average
of all 35 E-500B (three-foot) measurements (figure 7) was
0.63 mR/h. Similarly, the southwest pile (table XV) showed
1.1 mR/h (TLD) and 0.99 (E-500B) with a 1.12 mR/h for all
32 (three-foot) E-500B measurements (figure 6); and the
southeast pile (table XV) had an average of 0.47 mR/h (TLD)
and 0.45 mR/h (E-500B) with 0.45 mR/h for all 46 (three-
foot) E-500B measurements (figure 5). Fulltime occupancy
in these areas would result in whole body gamma exposures
33
-------
.500
.050
G>
m
<
m
r .020
0)
.010
.005
i—r
()-
Legend:
O - Location #42326
A - Location #42328
n - Location #42329
• - Location #42330
X - Location #75OO1
T - Location #75OO2
Location #75003
—i
» » ....... « ......
34
124 6 8 10 12 14 16 18 20 22 24 26 28 30
MAY. 1973
Figure 23. TLD Integrated WL Exposure - Salt Lake City, Utah
May 1973
-------
100.
50
10.00
5.00
1.00
0.100
.050
.01
3L.1200
2400
X--H—
Legend.
• - Radon (6 n
© - Ra A
A - Ra B
EJ - Ra C-C'
_x_ Radon (48
nin grab)
hour)
I I
I I
"75R 16
I I
23 -24 25
1
10 11
"12 13
MAY. 1973
U)
Ul
Figure 24. Radon and Radon Daughter Concentration (pCi/1) Salt Lake City, Utah
(Location #75001) - May 1973
-------
100,-
50
10X0
5.00
1.00
0.100
.050
.010
24 25
Figure 25. Radon and Radon Daughter Concentration (pCi/1) Salt Lake City, Utah ^
(Location #75002) - May 1973
-------
of about 100 times above background. The exposures received
by children using the area as a playground are not beneficial
and the exposures are received unknowingly.
Radon and Radon Daughter Concentrations
Radium decays to radon, a chemically inert gas. Radon
is capable of diffusing through most materials. The radon,
in turn, decays to several short-lived particulate radon
daughters (figure 3). When inhaled these particles can
remain in the air pathways long enough for the alpha decay
energy from the radon daughters, which represents the prin-
cipal dose received, to be absorbed by the cells lining the
tracheobronchial passages.
The biological effect of excess exposure to radon
daughters can be a form of lung cancer, considered to be
100 percent fatal. It is, therefore, unfortunate that
there is only a limited amount of experimental evidence or
clinical documentation available regarding the consequence
of chronic low-level exposures.
During the 1967-1968 PHS Study, only radon measurements
were made to determine if the Vitro uranium mill pile had
any effect on the surrounding community. The guidance used
for comparison of the sample values is found in 10CFR20. (5)
This guidance states that at the perimeter of a site the
radon concentration should not be above 3 pCi/1 (3 x 10~9
yCi/ml); except, if a significant population group can be
exposed, it should not exceed 1 pCi/1. Since measured com-
munity values did not exceed 1 pCi ^^Rn/l, nothing more was
done at that time. This is because of the mechanics of the
WL. (If radon is in equilibrium with its daughters and
100 pCi/1 of radon is present, the decay energy of the daugh-
ters will produce 1.3 x 10^ MeV of alpha energy or one WL.)
Thus, the less than 1 pCi/1 radon measurements obtained (in
the surrounding community) indicated that less than 0.01
WL would be present. Actually, a much lower WL would be
present since radon would not be in equilibrium with its
daughters because of the constant air movement. The pre-
sence of less than 1 pCi/1 of radon led to the conclusion
presented in DER 69-1 that there was no hazard created in
the surrounding community (beyond one-half mile). Field
data collected to date indicates that for general public
areas (at distances greater than one-half mile from the
tailings pile) the measured radon levels from the pile were
not distinguishable from natural background levels and were
found to be within current guides.
37
-------
There is, at present, no general guidance for public
exposures to radon or radon daughters. In general, an
applicable occupational exposure guide is divided by ten
to obtain an exposure guide applicable to an individual
in the general population. The current occupational limit
for uranium miners is 0.3 working level months (WLM) or
four WLM per year. (If a person works in an atmosphere
containing 0.3 WL for one working month, 170 hours, he has
received 0.3 WLM.)
Because of the previous practice of using uranium mill
tailings in the construction of homes, the Surgeon General
of the USPHS was requested to furnish guidance to the State
of Colorado. This guidance, which includes guidance for
exposure to gamma radiation as well as radon daughters,
was provided in August 1970. The working level value,
0.05 WL, is based on the time necessary (50y) for a person,
continually in that atmosphere, to accumulate 120 WLM which
is considered to be the dose necessary to double one's risk
of contracting lung cancer; however, because of the many
uncertainties and unknowns, the 0.01 WL value is being used
as a remedial action level. (6)
The radon and radon daughter measurements made at the
Vitro site in May 1973 were made to determine if the surface
of the pile could be developed and, at the same time, to
prevent any increase in public exposure to ionizing radiation,
In the case of the race track proposal, any public exposure
to ionizing radiation is considered unacceptable by EPA
because the exposure would be non-beneficial and it would
be received unknowingly by persons attending the racing
events.
The integrated radon measurement obtained (table IX)
from May 2 to May 20, 1973, indicated an average of 5.9
pCi/1 at the pile with an average WL of 0.010 (table V).
Thus, the radon daughters had reached 16.9 percent of
equilibrium* with the radon.
Five-minute radon and particulate filter samples were
also collected and the WL calculated. These samples were
collected over three 48-hour periods from May 2 to 4,
May 9 to 11, and May 20 to 22, 1973. The average values
*100 pCi 222Rn/l in 100% equilibrium with the radon daughter
products is equal to 1 WL.
38
-------
for these periods appear in tables VI, VII, and VIII; and
although the average radon concentration was 5.7 pCi/1, the
average working level was 0.002 which indicated the radon
daughters had reached only three percent of equilibrium.
The five-minute grab sample allows one to obtain radon
daughter to radon ratios, but the answer obtained is valid
only for the five minutes during which the sample was
collected. Thus, the integrated values (table"IX) provide
a better estimate of the WL exposure.
In the open, on the surface of the pile, the measured
working level was 0.010 WL. The average at the other two
locations on the surface of the pile (locations #75003 and
#75004), as shown in table V, was 0.006 WL and 0.008 WL,
respectively. Thus, the gamma exposure rate existing on
the surface of the pile is unacceptable for public exposure,
but the less than 0.01 WL's detected in the open would not
cause undue concern. However, if an enclosure of any type
is placed on or against the surface of the pile, the results
are very different, as shown in table V for locations #42326,
#42328, #42329, and #42330.
In general, the radon concentration inside a building
will come into equilibrium with the radon concentration
that exists outside the building, but the longer air-residence
time inside the building will cause the radon daughters and
radon to have a higher percent equilibrium and hence a higher
WL.
One five-minute grab air sample was obtained in each of
the four business buildings adjoining the west side of the
tailings piles. Integrated WL measurements were also made
in the buildings from May 3 to 22, 1973. The calculated
percent equilibrium is higher for all of the buildings than
the outside measurements and indicates the amount of venti-
lation present in the buildings at the time the grab sample
was taken; i.e., there were no doors open in locations
#42326 or #42328 but freight loading doors were open in
locations #42329 and #42330.
The integrated WL's reported for the preceding four
locations are 0.023 WL, 0.021 WL, 0.12 WL, and 0.47 WL,
respectively. The yearly WL exposure would be estimated
to be higher because during the cold months the buildings
would not be open as much as during the warm months; i.e.,
May values.
39
-------
The Suburban Sewage Treatment Plant is about one-quarter
mile from the north edge of the tailings pile and the average
integrated radon concentration was 3.67 pCi/1 (table X), an
average integrated WL (table V) of 0.008 WL, and 21.0 percent
equilibrium. The grab sample values for the same period were
2.14 pCi/1 radon, 0.001 WL, and 6.4 percent equilibrium
(table VII). These values (table VII) appear to indicate
what would be expected when compared to the values obtained
in November 1970 (table IV). That is, the relative percent
equilibrium is higher during November than during May indicat-
ing a longer air-residence time in November because the build-
ing is not open as much. Based on these values, an employee
of the SSTP would not be expected to receive a working level
overexposure during an eight-hour working day at the Suburban
Sewage Treatment Plant.
Gamma Radiation Exposures in the Salt Lake Valley
The mobile gamma scanning unit scanned 39,301 structures
in the Salt Lake Valley and reported 272 gamma radiation
anomalies. Twenty-seven of these were reported in Magna, Utah,
but none were determined to be tailings locations. The remain-
ing 245 anomalies were also investigated, resulting in the
preparation of 226 Indoor Radon Study-Gamma Screening Forms,
as shown in table XVI. (Fifteen locations were duplicated
in the Mobile Gamma Scanning Unit Reports; two locations
were screened which were not reported by the mobile unit;
and six anomalies, previously surveyed in 1970, were reported
by the mobile unit, but no screening form was completed. Also,
two locations were duplicates, but two forms were filled out
for each.) The location numbers assigned to the screening
forms for the Salt Lake Valley are #42295 to #42476 and #42511
to #42554.
The causes of the anomalies (as listed in table XVIII)
in the Salt Lake Valley are shown in table XIX. There are 64
anomalies reported in table XIX where nothing could be found
or a refusal was obtained: 17 were bad address reports;
seyen were refusals; and at 40 locations, nothing could be
detected on the property to indicate a reason for the reported
anomaly. Fifteen anomalies were caused by radioactive mater-
ials, and 71 were determined to be tailings locations: 20
possible tailings use; 13 tailings away locations; 35 tailings
under (up against) and away; two tailings under; and one was
the Vitro uranium mill tailings pile. In addition, it was
determined that at 36 of the 71 locations, the tailings were
windblown from the tailings pile. It appeared that tailings
40
-------
had actually been hauled onto the property at the remaining
34 locations (excluding the tailings pile). Of these, 18
locations are tailings away and 16 locations are tailings
under and away.
Radium dial clocks were found at Location #42410, a
drug store. Associated gamma measurements were 50 yR/h.
At four locations, #42312, #42313, #42346, and #42411,
the reported anomalies were determined to be due to "shine"
from sources reported at another location, but not located
on the involved property.
The gamma measurements obtained at the locations where
natural radioactive materials were found are typical of the
two-to-three times background measurements associated with
comparable material.
Twenty locations were determined to be possible tailings
use locations. All of the anomalies were apparently caused
by windblown material from the tailings pile. Structures
are involved at eight of the locations and the remaining
locations (12) are vacant lots. Gamma measurements to 400
yR/h were recorded at these locations. These locations
have a "4" recorded under "Use" on the screening forms and
in the attached computer printouts (appendix D).
Thirteen properties designated by a "2" recorded under
"Use" were determined to be tailings away (tailings more
than ten feet from a habitable structure) locations. At
four of the locations, #42309, #42319, #42335, and #42413,
the tailings were found on property which contained structures.
Seven involved vacant lots with gamma measurements to 1,000
yR/h and two were inactive tailings ponds at the Vitro mill
site.
Thirty-six properties were determined to be tailings up
against and away locations. At 16 of these, where the tailings
material has apparently blown from the tailings pile onto
the property and up against the structures, gamma measure-
ments to 110 yR/h were recorded (#42301, #42302, #42304,
#42305, #42306, #42307, #42315, #42316, #42317, #42318,
#42347, #42349, #42350, #42352, #42355, and #42357). At the
remaining 10 locations where similar measurements were
obtained, the tailings material appeared to have been hauled
onto the property (#42349, #42351, #42359, #42393, #42396.
#42403, #42412, #42511, #42514, and #42546).
41
-------
Tailings were determined to be under or under and away
at six business locations. At Location #42311, with gamma
measurements to 60 yR/h inside and 100 yR/h outside, the
tailings are located under the floor slab. At Location
#42329, with gamma measurements of 350 yR/h inside and 550
yR/h outside, the tailings were found over the entire
property. At Location #42330, tailings were also found over
the entire property; and gamma measurements of 500 yR/h in-
side and 2,500 yR/h outside were recorded. At Location
#42363, where the entire floor slab is involved, 150 yR/h
inside and 50 yR/h outside gamma measurements were recorded.
Location #42394 is a Salt Lake City fire station with tail-
ings over the entire area and gamma measurements recorded
inside were 110 yR/h and 400 yR/h outside. At Location #42408,
gamma measurements of 190 yR/h were observed in the display
area with the associated outside measurements of 1,000 yR/h.
Three residential properties are tailings under locations.
Location #42321 is a single family residence and the tailings
were determined to be under the floor slab. The high inside
gamma measurement (HIG) was made in the living room and 60
yR/h was recorded. Associated outside gamma measurements to
30 yR/h were recorded. At Location #42462, where tailings
were found under the south section of a vacant trailer house,
the associated gamma measurements were 100 yR/h. Gamma measure-
ments to 130 yR/h were recorded in the utility room at Location
#42528. Tailings were also found in the lawn and a flower
bed with gamma measurements to 500 yR/h.
The screening form assigned Location #42295 was prepared
for the former Vitro uranium mill site. The buildings at
this site have been dismantled and removed since the time of
the survey. There were no measurements obtained inside the
mill buildings during the survey, but gamma measurements
greater than 3,000 yR/h were obtained outside at the site.
In conclusion, there is not any one simple solution to
the environmental problems associated with the radon emana-
tions from uranium mill tailings. If the property now covered
by the tailings is to be developed and structures placed on
it, the stabilization will be very difficult and expensive.
Various estimates have been made of the depth of soil neces-
sary to significantly reduce radon emanation. (7) However,
to date, there have been no attempts to cover tailings piles
with sufficient material to eliminate or significantly reduce
radon emanation. Removal of the tailings to another location
42
-------
would be a possible, but costly, solution. An estimate made
for another site was $6 million to move one and one-half
million tons 16 miles by truck (25
-------
any other available guidance at the present time, the appli-
cation of this guidance to the Salt Lake City area may be used
with limitations. The limitations must specifically address
differences in site conditions, i.e., a case-by-case evalua-
tion is absolutely necessary for the involved properties.
Subsequent to the May 1973 Study at the Vitro site,
recommendations (appendix F) were provided by the EPA. These
were presented to the Governor of the State of Utah on June 7,
1973. The EPA considered the following facts in preparing
these recommendations:
1. The U.S. Atomic Energy Commission, in dealing with
new uranium mill license applications, requires as a prerequi-
site to the issuance of a license, that the applicant submit
its procedures for stabilization and long-term maintenance and
control of tailings. Mill owners must also provide assurance
that funds will be available for reclamation of the tailings
area when mill activities are terminated. In addition, the
AEC requires the licensee to subject the land on which the
tailings are stored to the following restrictions:
a. The owner may not permit the exposure and release
of the tailings material to the surrounding area.
b. No structures which men or animals can occupy
may be built on the covered surface.
c. The covered surface may not be subdivided.
d. No private roads, trails, or rights of way may
be established across the covered surface.
These restrictions are to be binding on the licensee
while it owns the land, and on successive owners thereafter,
for a period of 50 years or until such time prior to the
expiration of the 50-year period as regulations are promul-
gated to control disposition of uranium mill tailings. (8)
2. The AEC has required one licensee of an inactive
uranium mill to submit an Environmental Impact Statement (EIS)
before the company's application for license termination is
considered.
3. Because of the use of the uranium mill tailings in
construction in Grand Junction, Colorado, the Congress of the
United States authorized the expenditure of $5 million
in Federal funds, matched by $1.6 million of State of Colorado
44
-------
funds, to correct the overexposure to radiation occurring in
that community. Tailings use in construction in Utah has
also been determined, but the State has no regulations to
control the further use of tailings. As evidenced by the
construction work that has occurred on the surface of the
Vitro tailings pile, unauthorized use of the tailings can
still occur.
The EPA realizes that the AEC policy for new mill oper-
ators and the one EIS requirement for a uranium mill license
termination would not be binding on the present owners of the
inactive and delicensed Vitro facility; however, the EPA
believes that the intent of these new policies should apply
to proposals for new uses of land covered by a tailings pile
or the land which is within one-half mile of a tailings pile.
Until regulations are available for the permanent con-
trol of the tailings, including, but not limited to, the first
proposed use, any use of the tailings material or the tailings
pile site and its immediate vicinity is not recommended.
The EPA further recommends that, because uranium mill
tailings material has been found in the Salt Lake Valley,
no new or remodeling construction be allowed at locations
where tailings materials were found until a radiation survey
of the site has been performed by a person or firm with com-
petency in radiological health, as defined by the State's
laws or statutes related to ionizing radiation. (Guidance
levels that may be used for decontamination are discussed
in appendix E.)
45
-------
APPENDIXES
Page
Appendix A
Table I
Table II
Table III
Table IV
Table V
Table VI
Table VII
Table VIII
Table IX
Table X
Concentrations of Radon~222 found in
48-Hour Integrated Air Samples from
Salt Lake City, Utah (1967-1968 PHS
Study)
Average Concentrations of Radon-222
for Salt Lake City, Utah (1967-1968
PHS Study)
Thermoluminescent Dosimeter Results
(1967-1968 PHS Study)
Air Sampling Results (Location #75002)
Sewage Treatment Plant (Indoor)
Salt Lake City, Utah (1970)
Integrated Working Levels--Salt Lake
City, Utah, Sampling Stations
Air Sampling Results (Location #75001)
Tailings Pile, Floor of Pit, Salt Lake
City, Utah (1973)
Air Sampling Results (Location #75002)
Sewage Treatment Plant, Salt Lake City,
Utah (1973)
Air Sampling Results, Business Buildings
(Indoor) Salt Lake City, Utah (1973)
Integrating Radon Air Sampling Results,
Salt Lake City, Utah (Location #75001)
Tailings Pile, Floor of Pit (1973)
Integrating Radon Air Sampling Results,
Salt Lake City, Utah (Location #75002)
Sewage Treatment Plant (1973)
49
50
55
56
57
58
59
62
65
66
66
46
-------
Table XI
Table XII
Table XIII
Table XIV
Table XV
Table XVI
Table XVII
Table XVIII
Page
Integrating Radon Air Sampling Results, 67
Salt Lake City, Utah, Location #75003,
South Side of Tailings Pile, 1973
Integrating Radon Air Sampling Results, 67
Salt Lake City, Utah, Location #75004,
West Side of Tailings Pile, 1973
Radon Sampling Method Comparison, Loca- 68
tion #75001, Salt Lake City, Utah, May
1973
Radon Sampling Method Comparison, Loca- 69
tion #75002, Salt Lake City, Utah, May
1973
Comparison of TLD and E-500B Gamma 70
Radiation Exposure Rates, Vitro Uranium
Mill Tailings Pile, Salt Lake City, Utah
Community Gamma Scanning and Screening 71
Results
Computer Codes and Location Numbers Used 71
Determined Cause of Reported Scanning 72
Anomalies, Salt Lake City, Utah
Table XIX Anomaly Occurrence in Surveyed Communities 74
Appendix B
Appendix C
Appendix D
Mobile Gamma Scanning Report, Salt Lake 75
Valley, Utah
Recommendations of Action for Radiation 97
Exposure Levels in Dwellings Constructed
on or with Uranium Mill Tailings — Surgeon
General, Public Health Service
Computer Printout—Utah Comprehensive by 104
City, Street Address, Salt Lake City, Utah
47
-------
Appendix E U.S. Environmental Protection Agency's 116
Informal Guidance for Assessment of the
Need for Remedial Action Based on the
Follow-up Gamma Survey Reports for
Communities which are Located near Uran-
ium Mills
Appendix F U.S. Environmental Protection Agency's H8
Recommendation for the Vitro Tailings
Pile in Salt Lake City, Utah (June 7,
1973)
48
-------
APPENDIX A
TABLES I - XIX
49
-------
TABLE I
Concentrations of Radon 222 Found
In 4,8-hour Integrated Air Samples
From Salt Lake City, Utah
( 1967-1963 PHS Study)
Midpoint of Concentration of radon 222
Sta- sampling time (pCi/liter)
50
^ion — — -
no. hour
81 1458
1035
1115
1600
1100
1330
1135
1030
111S
1100.
1145
1505
1052
10SO
1240
1005
82 1245
1115
1025
1120
1400
0740
1110
1035
1050
1115
1130
1220
1100
1205
1105
83 0830
1035
1115
1415
1250
1340
1120
1105
1010
1145
day
10-31-67
11-7-67
11-28-67
1-4-68
1-16-68
2-14-68
3-6-68
3-20-68'
4-17-68
5-1-68
5-28-68
7-11-68
7-31-68
8-21-68
9-11-68
10-3-68
10-27-67
11-16-67
12-27-67
12-5-67
1-23-68
2-7-68
2-2B-68
3-20-68
5-7-68
4-9-68
5-28-68
6-19-68
7-24-68
8-7-68
9-5-68
11-1-67
11-21-67
12-12-67
1-11-68
1-30-68
2-20-68
3-13-68
4-3-68
4-24-68
5-14-68
USAEC
18.3
17.6
4,24
2.SS
11.5
7.8
16.2
7.44
5,67
22.1
5.9
5.1
4.4
4.17
3.13
6.39
0.39
0.50
0.30
0.31
0.21
0.17
± 0.1
± 0.2
± 0.05
± 0.05
± 0.1
± 0.1
± 0.1 17. S ± 0.1
± 0.08
± 0.08
± 0.2 21.8 ± 0.1
± 0.1
± 0.1
± 0.1
± 0.06
± 0.08
± 0.09
± 0.03
± 0.02
± 0.02
± 0.02
± 0.01
± 0.01
SNRHL
16.66
S.70
9.69
6.92
1.62
Sell
6.49
7.42
2026
4.55
3.49
2.49
4.38
2.97
3.70
5.20
3.07
1.30
0.50
0.26
0.12
0.39
7.09
7.34
4.39
-------
TABLE I (CONT)
Midpoint of
Sta- sampling time
Concentration of radon
(pCi/liter)
222
no. hour
83 1140
1125
1000
1110
1100
1530
84 1200
1040
1100
0945
1040
1125
1045
1140
1110
1125
1130
1040
1110
1255
1235
1020
85 1122
1050
1130
1155
0755
1135
1015
1100
1030
1120
1055
1150
1020
86 1315
1045
1125
1547
day
6-5-68
6-25-68
7-18-68
8-14-68
8-28-68
9-18-68
10-29-67
11-28-67
11-7-67
12-20-67
1-16-68
3-6-68
3-20-68
4-17-68
5-1-68
5-21-68
6-11-68
7-31-68
8-21-68
9-11-68
9-25-68
10-9-68
10-29-67
11-16-67
12-5-67
1-23-68
2-7-68
3-6-68
3-27-68
4-9-68
5-7-68
5-28-68
6-19-68
7-24-68
10-3-68
10-29-67
11-21-67
12-12-67
1-3-68
USAEC
0.71
0.44
0.42
0.21
0.25
0.21
0.68
0.60
0.98
0.83
0.23
0.58
0.81
0.82
0.47
0.51
1.30
0.44
0.54
± 0.03
± 0.02
± 0.03
± 0.02
± 0.02
± 0.01
± 0.02 0.53 ± 0.02
± 0.02
± 0.04
± 0.04 1.00 ± 0.04
± 0.02
± 0.02
± 0.02
± 0.03
± 0.03
± 0.02
± 0.03 1.44 ± 0.05
± 0.02
± 0.03
SWRHL
0.63
0.48
0.60
0.42
0.09
0.76
0.38
0.23
0.85
0.27
0.31
0.43
0.28
0.24
0.39
0.60
1.23 1.05
0.63 0.58
0.36 0.33
0.62
1.4
0.50
0.15
-------
TABLE I (CONT)
Sta
tioi
no.
86
91
92
Midpoint of
• sampling time
i -— — -.-^— -
hour
1305
1310
1045
1120
1050
1100
1130
1110
1030
1305
1100
1117
1025
1105
1005
1110
1255
1155
1100
1045
1040
1150
1125
1105
1045
1220
1550
1025
1105
1055
1415
1110
1100
1020
1120
1230
1215
1130
1150
1530
0945
day
1-30-68
2-20-68
3-13-68
4-3-68
4-24-68
5-21-68
6-5-68
6-25-68
7-18-68
8-14-68
8-28-68
10-27-67
11-7-67
11-28-67
12-20-67
1-16-68
2-14-68
3-6-68
3-20-68
4-17-68
5-1-68
5-21-68
6-11-68
7-8-68
8-21-68
9-11-68
10-31-67
11-14-67
12-5-67
12-27-67
1-23-68
2-28-68
3-27-68
4-9-68
5-7-68
5-28-68
6-19-68
8-7-68
9-5-68
9-18-68
10-3-68
Concentration of radon 222
(pCi/liter)
USAEC
0.23
0.30
0.15
0.29
0.51
0.20
0.38
0.69
0.18
0.99
0.22
0.21
0.26
0.23
0.40
0.30
0.40
± 0.01
± 0.02
± 0.02 0.17 ± 0.01
± 0.02
± 0.04
± 0.01 0.19 ± 0.02
± 0.02
± 0.04 0.73 ± 0.05
± 0.02 0.17 ± 0.01
± 0.04
i 0.01 0.20 ± 0.02
± 0.01 0.26 ± 0.01
± 0.01
± 0.01
± 0.02
± 0.01 0.22 ± 0.02
± 0.02 0.45 ± 0.03
SWRHL
0.11
0.31
0.28
0.17
0.32
0.17
0.17
0.99
0.48 0.46
0.61
0.27
0.80
0.24
0.26
0.24
0.15
0.42
0.82
0.84
0.85
0.42
0.29
0.22
0.17
0.26
52
-------
TABLE I (CONT)
Midpoint of
Sta- sampling time
Concentration of radon 222
(pCi/liter)
W.LU1
no.
93
94
95
hour
1450
1045
1335
1335
1335
1115
1005
1100
1145
1120
1045
1000
1115
1045
0900
1427
1000
1122
1010
1225
1045
1135
0945
1125
1035
1040
1050
1025
1000
1235
1200
1000
1000
1047
1055
0825
1130
1015
1050
1040
day
10-31-67
12-12-67
1-11-68
1-30-68
2-20-68
3-13-68
4-24-68
4-3-68
5-14-68
6-5-68
6-25-68
7-18-68
7-31-68
8-28-68
10-5-68
10-27-67
11-7-67
11-28-67
1-16-68
2-14-68
3-13-68
3-20-68
4-17-68
5-1-68
5-21-68
6-11-68
7-2-68
7-31-68
8-21-68
9-11-68
9-25-68
10-9-68
11-14-67
12-5-67
1-23-68
2-7-68
2-28-68
3-20-68
4-9-68
5-7-68
USAEC
0.55
0.25
0.25
0.19
0.16
0.30
0.38
0.20
0.58
0.83
0.57
0.60
0.17
0.29
0.07
0.24
O.'U
0.24
0.69
0.55
0.52
0.20
O.S8
0.58
0.32
± 0.02
± 0.02
± 0.02
± 0.02
± 0.01
± 0.02
± 0.02 0.42 ± 0.02
± 0.01
± 0.03 0.60 ± 0.02
± 0.03 0.95 ± 0.04
± 0.03
± 0.03
± 0.02
± 0.02
± 0.01
± 0.01
± 0.01 0.12 ± 0.02
± 0.01 0.29 ± 0.02
± 0.02 0.71 ± 0.03
± 0.03 0.57 ± 0.03
± 0.02
± 0.01
± 0.03
± 0.03
± 0.02
SWRHL
0.22
0.06
0.25
0.07
0.20
0.26
0.54
0.94
0.46
0.13
0.50
0.37
0.17
0.22
0.19
-------
TABLE I (CONT)
Midpoint of Concentration of radon 222
Sta- sampling time (pCi/liter)
tion
no. hour day USAEC SWRHL
95 1120
1045
1350
1100
1205
1300
1030
1435
96 1417
1045
1155
1200
1400
1320
1225
1205
1155
1235
1145
0915
1200
1525
2230
5-28-68
6-19-68
7-11-68
7-24-68
8-7-68
8-14-68
8-28-68
9-18-68
10-29-67
11-21-67
12-12-67
1-7-68
1-30-68
2-20-68
3-13-68
4-3-68
5-14-68
6-5-68
6-25-68
7-18-68
8-14-68
9-25-68
10-8-68
0.20
0.10
0.14
0.16
0.17
0.12
0.12
0.17
0.06
0.09
0.22
0.25
0.28
± 0.02 0.19 ± 0.01
± 0.01 0.16 ± 0.04
± 0.01 0.16 ± 0.02
± 0.01
± 0.02
± 0.01
± 0.01 0.12 ± 0.01
± 0.01
± 0.01
± 0.01
± 0.02 0.42 ± 0.03
± 0.02
± 0.02 0.27 ± 0.02
0.21
0.21
0.20
0.28
0.21
0.15
0.45
0.21
0.24
0.38 0.31
0.44
Location of radon sampling stations in Salt Lake City, Utah:
81 Center of tailings (700 West 3300 South).
82" Sewage Plant, 650 West 3300 South.
83 American Smelting £ Refining Company, Hygiene %
Research Department, 3422 South 7th West.
84 D. B. Harmon, 1080 West 5300 South.
85 Bonneville News Company, 965 Beardsley Place.
86 J. A. Skogg, 1501 West Claybourne Avenue.
91 D. Bolton, 570 West 3740 South.
92 Chris Body and Paint Shop Inc., 3152 South 2d West.
93 Tuloma Gas Products Co., 201 West 27th South.
94 Aluminum Manufacturing $ Supply Co., 1809 South 8th
West.
95 A. H. Higham, 105 Westwood Avenue.
96 Salt Lake City Health Department, 610 South 2d East.
54
-------
TABLE II
AVERAGE CONCENTRATIONS OF
RADON 222 FOR SALT .LAKE CITY,
UTAH (1967-1968 PHS Study)
Station
and
location.
Number of
sanples
Concentration of radon 222
(pCi/liter)
Standard
Average deviation Range
81
82C
83
84
85
86
91
92
93
94
95
96
16
15
16
15
13
13
15
14
14
17
17
16
10
4.2
.43
.39
.68
.28
.44
.42
.24
.44
.29
.22
6.4
1.4
.31
.24
.30
.14
.30
.24
.12
.26
.16
.12
1.6
2.3
.09
.21
.23
.11
.15
.17
.06
.07
.13
.06
22
6.6
1.3
1.1
1.4
.54
.99
.85
.55
.94
.60
.45
stations.
station is not actually onpile, but adjacent to the
pile at the sewage plant.
55
-------
TABLE III
THERMOLUMINESCENT DOSIMETER RESULTS
(1967-1968 PHS Study)
Location Station Net average exposure rate
(mR/hour)
Salt Lake City, Utah 81a 1.1
(June 17 to July 17, 85 .01
1968) 86 .01
91 .01
96 .01
aOnpile stations.
56
-------
TABLE IV
AIR SAMPLING RESULTS
#75002 - SEWAGE TREATMENT PLANT (INDOOR)
LOCATION: SALT LAKE CITY, UTAH YEAR
DATE
11/3/70
11/5/70
11/5/70
11/5/70
11/5/70
11/5/70
11/5/70
11/6/70
11/6/70
TIME
1830
1200
1400
1600
1700
1800
2330
0930
1130
COLLECTION
PERIOD
(MINUTE)
5
5
5
5
5
5
5
5
5
* Numbe
**0nly
TIME INTEGRATED
COUNTS PER MINUTE
1(2-5)
(820) *
(33)
(59)
(29)
(41)
(177)
(60)
(48)
(46)
•s in pare
samples *
I (6-20)
(578)
(32)
(35)
(25)
(20)
(121)
(36)
(31)
(42)
itheses a
ith Radon
1(21-30)
(603)
(21)
(32)
(23)
(24)
(no)
(31)
(33)
(42)
~ '
•e counts
analysis
c
(dpm/cpm)
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
Average**
per minute
ncluded.
V
I/min
30.4
30.4
30.4
30.4
30.4
30.4
30.4
30.4
30.4
W.L.
0.02940
0.00070
0.00160
0.00100
0.00130
0.00520
0.00150
0.00160
0.00190
0.00213
•btainid at five
1970
RADON DAUGHTER
CONCENTRATIONS
(pCi/1)
Ra-A [Ra-B
8.61
LT0.01
0.58
0.12
0.69
1.37
0.52
0.58
0.24
0.52
minutes,
3.56
0.04
0.13
0.12
0.14
0.50
0.11
0.19
0.26
0.20
15 minu
i
Ra-C
0.54
0.20
0.08
0.07
-T8.CH
0.31
0.11
0.02
0.08
0.17
:es. a
CONCEN-
TRATION
RATIOS
B/A
).41
_
).22
1.00
0.20
0.36
0.21
D.33
1.08
.
id 3(
C/A
0.06
_
0.14
0.58
4.T.01
0.23
D.21
D.03
P. 33
minu'
RADON
:>Ci/l
N.S.
1.20
0.91
0.82
N.S.
5.20
N.S.
N.S.
N.S.
2.03
es posl
EQUILIBRIUM
RATIOS
(RADON=1.0)
A
_
0.008
0.637
0.146
0.263
_
_
.
0.256
colled
g
.
0.033
0.143
0,146
0.096
_
_
_
Q.09?
ing pt
C-C'
0.167
0.088
0.085
0.060
—
.
_
0.084
-1od).
PERCENT
EQUILIBRIUM
5.83
17.58
12. ?0
10.00
_
_
_
10.50
Ul
-------
TABLE V
INTEGRATED WORKING LEVELS - SALT LAKE CITY, UTAH, SAMPLING STATIONS
LJ)C AT I ON
42326-01
42326-02
* £326-03
42326-04
43328-01
43328-0?
42328-03
42328-04
42329-01
42329-82
42329-03
42329-04
42330-01
42330-02
42330-03
42330-04
75001-01
75001-6?
75001-01
75001-04
75001-05
75001-0'.
7SOOI -07
75001-01
75002-01
75092-02
75002-03
75002-04
75002-06
75002-07
7500Z-09
75003-01
75003-02*
75003-028
75003-03
75003-0*
75003-05
7S003-06
75003-07
75003-Ofl
75004-01
75004-02
75004-03
75004-0*
75004-05
53
CORRECTED
VOLUME
18287
6155
1781?
15395
18287
6312
17*39
16065
18632
5858
17079
12757
19704
2131
19J65
16969
3954
7643
6885
6760
1 OT82
9515
ino?7
6550
603*
71524
6930
9739
8871
97*1
62*0
2987
429
306
1353
4H2S
4925
4420
382*
28*6
3687
940
5331
8726
5*1 7
PATE
START
5/ 3/73
5/ 9/73
5/11/73
5/17/73
5/ 3/73
5/ 9/73
5/JO/73
5/17/73
5/ 3/73
5/ 9/73
5/11/73
5/17/73
5/ 3/73
S/ 9/73
5/11/73
5/17/73
5/ 2/73
S/ 4/73
5/ 7/73
5/ 9/73
5/11/73
5/14/73
5/1 7/71
5/20/73
S/ 2/73
5/ 7/73
5/ 9/73
5/11/73
5/14/73
5/17/73
5/20/73
5/ 2/73
5/ 4/73
5/ 6/73
5/ 7/73
5/ 9/73
5/11/73
S/l*/73
5/17/73
5/20/73
5/ 2/73
5/ 4/73
S/ 9/73
5/17/73
P^TE
FINISH
5/ 9/73
5/11/73
5/17/73
5/22/73
S/ 9/73
5/11/73
5/17/73
5/22/73
5/ 9/73
S/H/73
5/17/73
5/22/73
S/ 9/73
5/11/73
5/17/73
5/22/73
S/ 4/73
5/ 6/73
5/ 9/73
5/11/73
5/14/73
5/17/73
5/?0/71
5/22/73
5/ 4/73
5/ 6/73
5/ 9/73
5/11/73
5/17/73
5/20/73
5/22/73
5/ */73
S/ 5/73
S/ 6/73
5/ 9/73
5/11/73
5/J*/73
5/17/73
5/20/73
5/22/73
5/ 4/73
5/ 5/73
5/11/73
5/20/73
5/2?/73
OFF
FLOW
(LPMI
2.2
2.5
2.5
2.5
2.2
2.6
?z.3.
2.5
2.3
2.4
2.3
2.5
2.5
0.0
2.5
2.'
2.9
2.7
2.7
2.8
2. r
2.6
2.6
2.7
2.6
2.6
2.7
2,6
2.5
2.5
2.7
2.0
0.0
2.5
0.0
2.7
1.2
2.6
2.6
2.3
2.3
0.0
2.3
2.4
2.5
TIME
(HOURS)
146.3
48.3
1*2.5
120.8
146.3
*7.7
_l*t»l _
121.*
146.2
47.8
142.2
104.1
1*6.2
28.0
142.2
121.5
26.9
55.7
*9.3
44.4
74.2
71.9
74. •.
48.6
44,0
45.5
50.5
68.3
75.0
46.3
29.0
a. 3
2.5
20.4
35.8
50.2
33.*
28.9
25.8
32.0
15.3
43.5
71.2
44.2
•(PRJUMft CM1BINED TOTAL TOTAL NO. AyEjlft
LEVELS WORKING TIME WORKING or MOKKINC
LEVEt J.EVELS SAM. LEVEL
.01971
.02110 ~
.027*3
.92313 " »S7.9 .09137 * .o?28
.0159*
.02370
,«21*3
.02470 4S7..7 .08577 * ,OJH
.12817
.11*20
.13370
.08768 4*0.3 .*6375 * . ||59
.46676
.56602 NV-1
.3630*
.55888 409.9 1.49869 3 .H96
.00352
.00644
.00903
.01293
.01086 "" ~ "
.01599
.01081
.01021 449.4 .060)9 8 .0100
.00*7*
.ossa*
•00691
.00972
•01237
.00805
.00701 *56.8 .06180 a .007'^
.00*99
.03666 NV-1
.00131
.01679 NV-1
.00675
. 0 1 38*
.00272
.90594
.00376 205.6 .03931 7 •«"
.0033*
.01670 NV-1 ___
.00756
.01090
.00831 190.9 .mpn 4 .»0'5
-------
TABLE VI
MR S7-1?LIN\~ RESULTS
LOCATION': >75001 - TAILINGS PILE FLOOR OF PIT, SALT LAKE CITY, UTAH yr?-.
DATE
5/2/73
5/2/73
5/?/73
5/3/73
5/3/73
5/3/73
5/3/73
5/3/73
5/3/73
5/4/73
5/4/73
5/4/73
5/9/73
5/9/73
5/9/73
5/9/73
5/10/73
TIME
1500
1910
2200
0200
0600
1000
1430
1745
2200
0150
0600
1010
0930
1306
1640
2110
0045
COLLECTION
PERIOD
(MINUTE)
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
TIME INTEGRATED
COUNTS P-R MINUTE
1(2-5) I (6-2or I m-io1)
61
80
236
486
190
102
69
(21)*
404
86
946
55
118
59
56
418
680
226
215
645
1153
547
372
207
(11)
1069
326
2293
182
431
186
191
1136
1765
145
93
321
592
281
201
121
(ID
559
171
1155
106
244
99
86
581
886
1
c
(dpm/cpi"1 )
1.22
1.22
1.2?
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
V
i /join
30.84
31.10
30 4fi
30,08
31.36
29.70
29.95
28.80
28.75
29.12
29.00
29.24
28.14
24.46
24.92
30.17
29.40
W L
0.00073
0.00044
o onifit;
0.00337
0.00138
0.00096
0.00065
0.00062
0.00316
0.00081
0.00669
0.00056
0. 00127
D. 00061
D. 00045
0.00306
0.00487
1973 paGE 1 OF 3
RADON DAUGHTER
CONCENTRATIONS
(PCI/1)
Ra-A foa-P Pa-r
0.119
0.121
n 475
1.355
0.351
0,095
0.165
0.292
1,014
0.044
2.577
0.108
0.152
0.119
0.023
0.909
0.100
0.009
n iin
0.239
0.107
0.096
0.072
0.053
0.251
0.075
0.446
0.063
0.141
"•
0.055
0.017
0.228
1.610 J0.330
0.026
0.072
0.160
0.204
0.128
0.102
0.031
0.011
0.226
0.102
0.475
0.034
0.106
0.056
0.090
0.259
0.411
CONCEN-
TRATION
RATIOS
B/A r /a
0.84
0.04
fl ?
0 If
n n
1 01
0.43
O.lf
n ?s
1.71
0.17
0.59
0.93
0.46
0.77
0.25
0.21
0.22
0.59
0.34
Q. 15
0.37
1.08
0.19
0.04
n 7?
2.33
0.18
0.31
0.70
0.47
3.99
0.29
0.26
RADON
DCi /1
4.0
3.6
N.S.
12.0
N.S.
2.2
N.S.
2.3
*l £
1.7
N.S.
1.4
2.8
N.S.
2.2
N.S.
21.0
EQUILIBRIUM
RATIOS
( RADON' = 1 . 0)
A « r r '
0.03
0.03
0.11
0.04
0.13
.
0.03
-
0.08
0.05
-
0.01
-
0.08
0.03
0.00
0-02
0.04
0.02
0.04
-
0.05
0.05
-
0.01
-
0.02
0.01
0.02
0.02
n.ns
.00
0.06
-
0.02
0.04
-
0.04
-
0.02
PERCENT
EQUILIBRIUM
1.8
1.2
?.R
4,4
2.7
4.8
-
4.0
4.5
-
2.0
-
2.3
-------
TABLE VI (Cont. )
AIR SAMPLING RESULTS
LOCATION': #75001 - TAILINGS PILE FLOOR OF PIT, SALT LAKE CITY, UTAH YEAR
DATE
5/10/73
5/10/73
5/10/73
5/10/73
5/10/73
5/11/73
5/11/73
5/11/73
5/20/73
5/20/73
5/20/73
5/20/73
5/21/73
5/21/73
5/21/73
5/21/73
5/21/73
TIME
0445
0920
1230
1740
2110
0045
0445
0853
0950
1330
1808
2120
0038
0520
0910
1300
1710
COLLECTION
PERIOD
(MINUTE)
5
*>
5
")
5
•>
5
•;>
5
5
5
5
5
•}
5
5
5
TIME INTEGRATED
COUNTS PER MINUTE
1(2-5) t(6-20)
5054
123
65
71
2498
729
195
91
39
52
(34)
273
226
245
76
(23)
62
12121
387
204
219
5894
2216
548
317
133
167
(16)
572
462
474
196
(13)
201
1(21-30)
6788
202
100
113
3288
1102
305
152
56
93
(15)
287
242
239
116
(8)
100
c
(dpm/cpm)
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
V
L/min
28.52
27.00
28.08
28.08
28.30
28.08
27.68
28.52
27.64
28.19
27_fi4_
28.52
28.30
26.83
28.63
30.30
28.14
W.L.
0.04169
0. 00111
0.00051
0.00060
0.02050
0.00579
0.00178
0.00072
0.00025
0.00050
Q_omsa_
QJM184
0.00160
D. 00171
1.00070
3. 00037
0.00051
1973 PAGE 2 OF 3
RADON
CONCE
(
DA'JGHI
f^TJa^K;
pCi/1)
nER
)NS
Ra-A JRa-3 1 Ra-C
16.502
0.212
0.087
0.121
8.338
1.165
0.513
0.049
0.001
0.099
M95
O.Q17
0,821
0.956
0.245
0.114
0.075
3.836
0.095
0.034
0.049
1.855
0.406
0.173
0.045
0.002
0.051
0,057
o.m
0.114
0.103
0.075
LT.001
0.037
1.403
o.m
0.067
0.061
0.669
0.679
0.102
0.117
0.063
0.038
4LQ£6_
0.087
0.049
0^55
0.018
0.079
0.065
CONCEN-
TRATION
RATIOS
B/A
0.23
0.45
0.39
0.40
0.22
0.3E
0.34
0.90
2.65
0,5?
0,12
0 1?
Q.14
0..11
0,30
LT.O"
0.48
C/A
0.09
0.53
0.77
0.51
0.08
0.58
0.20
2.38
67.6
r£L2B_
^JLflS.
0.09
0.06
0.06
0,07
0.69
0.87
RADON
oCi/1
N.S.
1.9
N.S.
2.1
N.S.
9.8
N.S.
0.91
1.1
N S
6.6
N.S.
7.1
N.S.
2.2
N.S.
EQUILIBRIUM
RATIOS
(RADON=1.0)
A
-
0.11
-
0.06
-
0.12
-
0.05
LT.01
_J3-08_
0.12
0.11
-
2.2 0.03
B JC-C'
-
0.05
-
0.02
-
0.04
-
0.05
LT.01
0,01
0.02
0 03
-
0.02
-
0.06
-
0.03
-
0.07
-
0.13
0.06
^i\m
-0-01
o m
-
0.03
PERCENT
EQUILIBRIUM
-
5.8
-
2.9
-
5.4
-
7.9
2.3
1 a.
? i
3 ?
-
2.3
o
-------
TABLE VI (Cont. )
AIR SAMPLING RESULTS
LOCATION:
DATE
5/21/73
5/22/73
5/22/73
5/22/73
TIME
2104
0058
0513
0920
075001 - TAILINGS PILE FLOOR OF PIT, SALT LAKE CITY, UTAH YEAR
COLLECTION
PERIOD
(MINUTE)
5
5
5
5
TIME INTEGRATED
COUNTS PER MINUTE
1(2-5)
237
1387
1764
174
? (6-20)
581
2874
4132
495
I (21-30)
314
1516
2110
270
C
(dpm/cpm)
1.22
1.22
1.22
1.22
AVERAGE**
V
L/min
28.30
28.36
28.52
28.91
W.L.
0.00190
0.00996
0.01274
0.00149
0.00180
1973 PAGE 3 OF 3
RADON DAUGHTER
CONCENTRATIONS
(pCi/1)
Ra-A
0.721
4.994
5.246
0.410
0.596
Ra-B
0.161
0.727
0.881
0.138
0.137
Ra-C
0.091
0.304
0.768
0.099
0.131
CONCEN-
TRATION
RATIOS
B/A
0.2;
0.1!
0.17
0.34
_
C/A
0.13
0.06
0.15
0.24
_
RADON
DCi/1
N.S.
31.0
N.S.
2.6
5.75
ECU I]
FJ
(RA[
A
-
0.16
-
0.16
0.10
_,IBR!l
^TIOS
)ON~~ 1
B
-
0.02
-
0.05
0.02
J.V
0)
f C "
-
0.01
-
0.04
0.02
PERCENT
EQUILIBRIUM
-
3.2
-
5.7
3.13
*Numbers in parentheses are counts per minute (obtained at'five minutes, 15 minutes, and 30 minutes post collecting period).
**0nly those samples with radon analysis included in average.
-------
TABLE VII
AIR SAMPLING RESULTS
LOCATION: #75002 — Sewage Treatment Plant, Salt Lake City, Utah YEAR
DATE
5/2/73
5/2/73
5/2/73
5/3/73
5/3/73
5/3/73
5/3/73
5/3/73
5/3/73
5/4/73
5/4/73
5/4/73
5/9/73
5/9/73
5/9/73
5/9/73
5/10/73
TIME
1330
1752
2250
0240
0640
0944
1510
1830
2300
0240
0600
0930
0845
1343
1745
2235
0130
COLLECTION
PERIOD
(MINUTE)
5
•;>
">
5
5
5
5
5
5
5
5
5
5
5
5
5
5
TIME INTEGRATED
COUNTS PER MINUTE
1(2-5)
(23)*
60
609
291
199
74
41
55
341
58
591
25
96
34
34
770
451
(10)
160
1190
860
471
280
133
202
673
187
1852
76
301
114
103
1786
1344
1(21-30)
(10)
73
633
452
244
147
65
106
383
101
924
46
186
58
46
1025
670
C
(dpm/cpm)
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
V
L/min
29.46
32.72
30.20
30.83
28.22
29.57
31.21
31.60
29.49
30.37
29.49
30.64
28.69
28.72
29.49
30.20
1.22 28.92
W.L.
0.00058
0.00034
0.00405
0.00226
0.00149
0.00068
0.00029
0.00047
0.00253
0.00050
0.00456
0.00024
0.00105
0.00029
0.00022
0.00609
0.00346
W* PAGE 1 OF 3
RADON DAUGHTER
CONCENTRATIONS
(pCi/1)
Ra-A
0.355
0.100
2.195
0.541
0.601
0.038
0.041
0.036
1.328
0.092
0.809
0.062
0.253
0.038
0.036
2.547
0.755
Sa-3
0.039
0.013
0.295
0.191
0.109
0.063
0.020
0.043
0.221
0.047
0.328
0.029
0.130
0.023
0.007
0.584
0.243
Ra-C
0.005
0.045
0.078
0.196
0.085
0.086
0.041
0.057
0.010
0.044
0.552
0.009
0.035
0.035
0.038
0.134
0.389
CONCEN-
TRATION
RATIOS
B/A
0.11
0.13
0.13
0.35
0.18
1.65
0.47
1.1£
0.17
0.51
0.41
0.4£
0.51
0.61
0.21
0.23
0.32
C/A
0.01
0.45
0.04
0.36
0.14
2.24
0.99
1.57
0.01
0.48
0.68
0.15
0.14
0.94
1.07
0.05
0.52
RADON
sCi/1
1.4
0.65
NS
3.0
NS
1.4
NS
1.5
NS
1.1
NS
1.1
1.5
NS
0.64
NS
3.8
EQUILIBRIUM
RATIOS
(RADON=1.0)
A
0.25
0.15
—
0.18
--
0.03
..
0.02
—
0.08
—
0.06
0.17
--
0.06
—
0.20
B
0.03
0.02
—
0.06
--
0.05
—
0.03
~
0.04
--
0.03
0.09
—
0.01
--
0.06
c-c'
.T.01
0.07
—
0.07
--
0.06
—
0.04
—
0.04
—
0.01
0.02
—
0.06
--
0.10
PERCENT
EQUILIBRIUM
4.1
5.2
--
7.5
—
4.9
~
3.1
—
4.5
—
2.2
7.0
—
3.4
—
9.1
-------
TABLE VII (Cent. )
AIR SAMPLING RESULTS
LOCATION: #75002 -- Sewage Treatment Plant, Salt Lake City, Utah YEAR
DATE
5/10/73
5/10/73
5/10/73
5/10/73
5/10/73
5/11/73
5/11/73
5/11/73
5/20/73
5/20/73
5/20/73
5/20/73
5/21/73
5/21/73
5/21/73
5/21/73
TIME
0525
0950
1340
1730
2145
0135
0523
0930
1040
1247
1725
2205
0055
0530
0900
1345
COLLECTION
PERIOD
(MINUTE)
5
5
5
5
5
<
•)
5
•)
5
5
5
5
5
5
5
TIME INTEGRATED
COUNTS PER MINUTE
1(2-5)
1128
59
25
(3)
96
582
135
60
49
21
62
169
173
331
52
24
5/21/73 J1630 5 24
I (6-20)
2947
196
103
(13)
302
1548
437
250
142
91
212
435
483
719
173
91
51
I (21-30)
1708
114
58
(6)
169
937
258
112 _j
77
53
118
271
303
395
86
51
37
C
(dpm/cpm)
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
1.22
V
1/min
28.69
28.72
28.46
28.46
27.41
28.71
29.49
29.46
29.25
26.41
26.03
28.49
25.92
25.35
26.66
26.30
24.84
W . L .
0.01013
0.00061
0.00028
0.00006
0.00095
0.00559
0.00137
0.00044
0 . 00042
0.00028
0.00067
0.00167
3.00199
3.00286
3.00045
0.00028
D. 00029
1973 PAGE 2 OF 3
RADON DAUGHTER
CONCENTRATIONS
(pCi/1)
Ra-A
3.454
0.116
0.012
LT.001
0.202
1.869
0.288
LT.001
0.108
0.009
0.105
0.594
0.616
1.326
0.058
0.025
0.135
Ra-B
1.042
0.069
0.032
0.003
0.098
0.630
0.158
0.017
0.038
0.035
0.070
0.195
0.242
0.240
0.033
0.031
0.039
Ra-C
0.343
0.037
0.029
0.137
0.067
0.126
0.072
0.113
0.030
0.025
0.056
0.018
0.034
0.074
0.061
0.026
LT.OO'
CONCEN-
TRATION
RATIOS
B/A
0.3(
0.60
2.78
__
0.43
0.34
0.55
--
0.35
3.91
0.67
0.33
0.39
0.18
0.57
1.21
0.29
C/A
0.10
0.32
2.47
__
0.33
0.07
0.25
--
0.27
2.86
0.54
0.03
0.05
0.06
1.06
1.03
LT.01
RADON
aCi/1
NS
0.57
NS
0.99
NS
6.7
NS
1.1
0.68
NS
2.0
NS
2.5
NS
1.0
NS
1.0
EQUILIBRIUM
RATIOS
(RADOK=1.0)
A
—
0.20
LT.01
—
0.28
__
LT.01
0.16
—
0.05
—
0.25
--
0.06
--
0.14
3
__
0.12
__
0.00
—
0.09
_-
0.02
0.06
—
0.04
--
0.10
--
0.03
--
0.04
C-C
,_
0.07
--
0.14
_-
0.02
—
0.10
0.04
—
0.03
--
0.01
--
0.06
--
LT.01
PERCENT
EQUILIBRIUM
--
10.7
._
0.61
--
6.6
_-
4.0
6.2
--
3.4
—
8.0
--
4.5
--
2.9
CT>
-------
TABLE VII (Cent.)
AIR SAMl'LIKo RESULTS
LOCATION: 175002 -- Sewag
DATE
5/21/73
5/22/73
5/22/73
5/22/73
AVERAGE
TIME
2150
0110
0523
0850
**
COLLECTION
PERIOD
(MINUTE)
5
5
5
5
e Treatment Plant, Salt Lake City, Utah YEAR
TIME INTEGRATED
COUNTS PER MINUTE
1(2-5)
91
654
1398
180
* Num
and
** Onl;
I (6-20)
237
1835
3673
461
>ers in
JU mlnu
r sample
1(21-30)
119
1013
2071
247
parenthe:
tes post
s with TI
C
(dpm/cpm)
1.22
1.22
1.22
1.22
es are cc
coilectir
don analy
V
L/min
24.79
25.35
24.32
23.65
unts i
g pen
sis ir
W.L.
0.00077
0.00645
0.01430
0.00174
0.00136
er minu"
od ) .
eluded.
1973 PAGE 3 OF 3
RADON DAUGHTER
CONCENTRATIONS
(pCi/1)
Ra-A
0.254
1.853
4.788
0.606
0.368
e (obta
Ra-B
0.053
0.612
1.390
0.147
0.129
Lned at
Ra-C
0.066
0.386
0.623
0.100
0.095
five
CONCEN-
TRATION
RATIOS
B/A
0.2'
0.33
0.2S
0.24
mil
C/A
0.26
0.21
0.13
0.17
utes
RADON
DCi/1
NS
9.2
NS
3.2
2.14
15 m
EQUII
Rl
(RAI
A j
—
0.20
—
0.19
0.17
nutes,
.IBRK
VTIOS
1OM— 1
B
—
0.07
—
0.05
0.06
JM
0)
c-c'
—
0.04
—
0.03
0.04
PERCENT
EQUILIBRIUM
—
7.0
—
5.4
6.36
-------
TABLli VIII
AIR SAMPLING RESULT.-:
BUSINESS BUILDINGS (INDOOR) SALT LAKE CITY. UTAH
LOCATION: (142326, 42328. 42329 and 42330, Respectively)
YEAR; 1973
DATE
5/21/73
5/21/73
5/21/73
5/21/73
TIKE
1010
1115
1035
1045
COLLECTION
PERIOD
(MIKUTE)
•)
5
">
")
TIKE INTEGRATED
COUNTS PER MINUTE
1(2-5)
707
850
203
1264
I (6-20)
2505
3017
655
3199
I (21-30)
1366
1688
398
1817
C
(dpm/cpiri)
1.22
1.22
1.24
1.22
V
L/min
26.03
27.64
27.41
26.66
W.L.
0.00760
0.00896
0.00234
0.01168
RADON DAUGHTER
CONCENTRATIONS
(pCi/1)
Ra-A
0.931
1.191
0.517
4.210
p.a-B
0.765
0.960
0.285
1.136
Ra-C
0.739
0.768
0.098
0.424
CONCEN-
TRATION
RATIOS
3/A
o.s;
O.B'
0.5!
0.2:
C/A
0.79
0.64
0.19
0.10
RADON
DCi/1
3.0
4.1
1.6
18.0
Ecui:
R;
(RA:
/-„
0.31
0.29
0.32
0.23
.11:::
>:•.::=!
0.25
0.23
0.18
0.06
C — C'
0.25
0.19
0.06
0.02
PERCENT
EQUILIBRIUM
25.3
21.9
14.6
6.5
en
-------
TABLE IX
INTEGRATING RADO:i AIR SAMPLING RESULTS
SALT LAKE CITY, UTAH
LOCATIO!,': #75001 - TAILINGS PILE FLOOR OF PIT YEAR: 1973
DATE./TLVE "Oil"
5/2/73
5/4/73
5/7/73
5/9/73
5/11/73
5/14/73
5/17/73
5/20/73
1500
1015
0830
1000
0920
1110
0915
-
DATS/TIME "OFF"
5/4/73
5/6/73
5/9/73
5/11/73
5/14/73
5/17/73
5/20/73
5/22/73
1010
1605
0947
0910
0915
0720
0750
-
MEASURED
RADCN i;: ->ci/i
2.3
4.1
No Sample
9.3
6.3
6.8
6.6
No Sample
Average
5.9
TABLE X
INTEGRATING RADON AIR SAMPLING RESULTS
SALT LAKE.CITY, UTAH
LOCATION: #75002 - SEWAGE TREATMENT PLANT YEAR: 1973
DATE/TI?.:E "ON"
5/2/73
5/4/73
5/7/73
5/9/73
5/11/73
5/14/73
5/17/73
5/20/73
1330
0930
1010
1300
0955
1140
0800
1100
DATE/TIME "OFF"
5/4/73
5/6/73
5/9/73
5/11/73
5/14/73
5/17/73
5/20/73
5/22/73
0930
1530
-
0945
1130
0745
0730
0900
Average
MEASURED
RADON IN Ti-Ci/l
2.4
1.7
No Sample
3.4
No Sample
7.8
3.8
2.9
3.67
66
-------
TABLE XI
INTEGRATING RADON AIR SAMPLING RESULTS
SALT LAKE CITY, UTAH
DATE/TIME "ON"
5/2/73
5/5/73
5/9/73
5/11/73
5/14/73
1225
1700
1045
1035
1025
DATE/TIME "OFF"
5/4/73
5/6/73
5/11/73
5/14/73
5/17/73
1100
1550
1012
0950
0710
MEASURED
RADON IN pCi/1
2.1
4.1
6.1
3.8
6.5
AVERAGE:
4.52
LOCATIONi
TABLE XII
INTEGRATING RADON AIR SAMPLING RESULTS
SALT LAKE CITY, UTAH
#75004 — West Side of Tailings Pile YEAR: 1973
DATE/TIME "ON"
5/4/73
5/9/73
5/17/73
1015
1100
1400
DATE/TIME "OFF"
5/6/73
5/11/73
5/22/73
1605
1150
1020
AVERAGE :
MEASURED
RADON IN sCiA
4.1
9-7
9.4
7.73
67
-------
TABLE XIII
RADON SAMPLING METHOD COMPARISON
LOCATION* 175001, SALT LAKE CITY, UTAH DATE: May 1973
SAMPLING DATE
ON
5/2/73
3/9/73
5/20/73
WE RAGE:
OFF
5/4/73
5/11/73
5/22/73
AVERAGE*
RADON
(pCi/1)
3.89
5.82
7.54
5.75
INTEGRATED**
RADON
(pci/l)
2.3
9.3
NS
5.8
AVERAGE A
WORKING LEVEL
0.00107
0.00212
0.00220
0.00180
INTEGRATED*
WORKING LEVEL
0.00352
0.01293
0.01021
0.00889
AVERAGE
% EQUILIBRIUM
(5 MINUTE SAMPLES)
2.75
3.64
2.92
3.10
• AVERAGE
% EQUILIBRIUM
(INTEGRATED)
15.30
13.90
14.60
Average of 5 minute samples collected every eight hours during a 48-hour period.
P.n pCi/1 calculated for midpoint of collection during a 48-hour continuous sample.
Average W.L. obtained from the calculated radon daughters (A, B, C-C") concentrations.
Measured with TLD air sampler.
oo
U3
-------
TABLE XIV
RADON SAMPLING METHOD COMPARISON
LOCATION: #75002 , SALT LAKE CITY, UTAH DATE: May 1973
SAMPLING DATE
01*1
5/2/73
5/9/73
5/20/73
AVERAGE :
OFF
5/4/73
5/11/73
5/21/73
AVERAGE*
RADON
(pCi/1)
1.45
2.19
2.80
2.15
INTEGRATED**
RADON
(pCi/1)
2.4
3.4
2.9
2.9
AVERAGED
WORKING LEVEL
0.00072
0.00163
0.00172
0.00136
INTEGRATED1"
WORKING LEVEL
0.00474
0.00717
0.00701
0.00631
AVERAGE
% EQUILIBRIUM
(5 MINUTE SAMPLES)
4.97
7.44
6.14
6.18
AVERAGE
% EQUILIBRIUM
(INTEGRATED)
19.75
21.09
24.17
21.67
* Average of 5 minute samples collected every eight hours during a 48-hour period.
** Rn pCi/1 calculated for midpoint of collection during a 48-hour continuous sample.
^ Average W.L. obtained from the calculated radon daughters (A, B, C-C') concentrations.
t Measured with TLD air sampler.
en
-------
TABLE XV
COMPARISON OF TLD AND E500B GAMMA RADIATION EXPOSURE RATES
VITRO URANIUM MILL TAILINGS PILE
SALT LAKE CITY, UTAH
NORTH TO
SOUTH GRIE
1
3
5
7
9
10
11
12
13
WEST TO EAST GRID
i
0.28* (0.25)
0.38 (0.30)
1.01 (1.0)
0.31 (0.30)
0.46 (0.5)
Business
Buildings
3
0.34 (0.4)
1.58 (1.3)
1.22 (1.1 )
0.39 (0.4)
1.52 (1.2)
0.86 (0.8)
1.13 (0.95)
5
0.30 (0.2)
0.26 (0.2 )
0.35 (0.5)
0.42 (0.4)
2.24 (2.0)
0.80 (0.7)
0.69 (0.8)
7
9 1 11
13
Suburban Sewage
Treatment Plant
0.35 (0.35)
0.64 (0.7)
0.60 (0.7)
0.68 ( 0.6 )
0.80 (0.5 )
0.56 (0.5)
0.41 (0.4)
0.82 (0.6)
0.63 (0.6)
0.05 (0.6)
0.30 (0.3)
0.62 (0.6)
0.29 (0.45)
0.39 (0.3)
0.12 (0.18)
0.58 (0.15 )
0.21 (0.15)
*A11 Measurements in mR/h
0.00 TLD mR/h
(0.00) E500B mR/h
o
r-
-------
TABLE XVI
COMMUNITY GAMMA SCANNING AND SCREENING RESULTS
NUMBER OF FIELD ANOMALIES UNABLE TO SCREEN
STRUCTURES ANOMALIES ANOMALIES FORKS TAILINGS HON-TAILINQS —
SCANNED REPORTED CHECKED PREPARED LOCATIONS LOCATIONS REFUSAL BAD ADDRESS DUPLICATION
Salt Lake City
39,301»
245
247
226
71
17
15
*Total structures scanned i« the Salt Lake Valley, including Magna, Utah,
TABLE XVII
COMPUTER CODES AND LOCATION NUMBERS USED
STATE
NAME CODE
COUNTY
CITY
NAME
CODE
NAME
CODE
LOCATION NUMBERS ASSIGNED
Utah
Salt Lake
035
Salt Lake City 1904
42,295-42,476 and 42,511-42,554
-------
TABLE XVJII
DETERMINED CAUSE OF REPORTED SCANNING ANOMALIES
SALT LAKE CITY, UTAH
CAUSE
IDENTIFICATION
NUMBER OF LETTER FOR
LOCATIONS TABLE IV CAUSE OF ANOMALY/REMARKS
40 A Unexplained - Nothing detected on property
to indicate a reason for the reported
anomaly.
17 B Bad address - Unable to find the location
reported by the mobile unit.
7 C Refusal - Occupant and/or owner refused
to allow the survey.
1 D Radium dial instrument on property.
4 F "Shine" from other reported anomaly.
10 G Uranium ore on property.
68 I Natural activity in brick walls or fireplaces
1 K Natural activity in fertilizer.
3 M Natural activity in gravel and/or soil.
2 N Natural activity in stucco walls.
2 0 Natural activity in concrete walls in highwaj
underpass.
20 P Possible tailings use - Unable to make
positive field identification.
(32)* Q Tailings on property - Windblown from
tailings pile.
13 R Tailings deposit on property - Greater
than ten feet from a habitable structure.
72
-------
NUMB'ER OF
LOCATIONS
SALT LAKE TABLE XVIII (CONT)
CAUSE
IDENTIFICATION
LETTER FOR
TABLE IV
CAUSE OF ANOMALY/REMARKS
Tailings deposit on property - Under or
within ten feet of a habitable structure,
Uranium mill tailings pile - Mill area
screen.
226 Total Screening Forms
#Not added into total - Windblown tailings locations are in both the
possible and determined tailings use locations.
73
-------
TABLE XIX
ANOMALY OCCURRENCE IN SURVEYED COMMUNITIES
UTAH
COMMUNITY
Salt Lake City
FIELD
FORMS
PREPARED
226
CAUSE OF ANOMALY FROM TABLE III
UNKNOWN
ABC
40 17 7
6-4
RADIOACTIVE
SOURCE
OR ORE
D E F G H
1 4 10
15
NATURAL
RADIOACTIVITY
I J K L M N 0
68 1 322
76
TAILINGS
LOCATIONS
P Q R S T
20 13 37 1
71
-------
APPENDIX B
MOBILE GAMMA SCANNING REPORT
SALT LAKE VALLEY, UTAH
SUMMATION: MOBILE RADIATION SURVEY
Salt Lake City, Utah
SURVEY COMMENCEMENT DATE: April 5-11, 1972
CURRENT REPORT PERIOD: April 5-11, 1972
Survey Days 7.0
Structures Surveyed 3,871
Radiation Anomalies 88
Miles Surveyed 54.90
75
-------
MOBILE RADIATION SURVEY
-l
SALT LAKE CITY, UTAH
No.
1
2
3
4
5
6
7
a
9
10
11
12
13
14
15
16
17
18
1?
20
21
22
23
24
25
26
27
28
Bap
NE/4
Coordinate
700W
500 W
580W
500W
900W
3300S
3300S
3740S
3600S
3500S
3440S
3300S
3340S
3440S
3340S
Address
Vacant Land, 700 W at 3300 So.
Vacant Land, 700 West St.
3422. 700 West Street
3415, 3410 South St.
Fire Engineering Co., 700 West St.
3363, 700 West St.
3349, 790 West St.
3341. 700 West St.
3327, 700 West St.
Address ?, 700 West St.
Address ?, 700 West St.
Westerner's Salvage, 500 W. St.
560, 3740 So. Street
Vacant Land, 500 West St.
3585, 500 West St.
3513,500 West St.
3499, 500 West St.
Vacant Lot, 500 West St.
Central Landscape, 500 West St.
3302, 900 West Street
3340, 900 West Street
3342, 900 West Street
3344, 900 West Street
Vacant Lot, 900 West Street
3432, 900 West St.
3347, 900 West St.
3339, 900 West St.
Address ?, 900 West St.
gackjround
Counts/Sec.
475
475
475
463
500
600
600
600
600
600
600
525
425
350
500
500
500
500
500
575
575
575
575
575
575
625
625
625
lai. Bed.
Count s/Sec.
2,313
1,475
650
725
788
1,663
838
1,213
1,925
1,825
2,183
788
525
488
1,150
2,500
5,525
9,835
9,250
1,225
1,000
975
800
750
963
775
1,500
1,625
Report Per.od: April 5 - 11, 1972
CosMnts
West side, Tailing Pile due north
120 feet north of 3422, 700 West Street
South of 3363, 700 West Street
South of Tailings Pile, East side
South of Tailings Pile, East side
South of Tailings Pile, East side
South of Tailings Pile, East side '
North of 3327, 700 West St.
Corner of 700 W and 3300 So., East side
Office Building
Drive
South of 3585, 500 West Street
North of 3499, 500 West St.
Southwest of Tailings Pile, West side
South of 3344, WO West St.
Drive
Southwest of Tailings Pile, East side
Drive
North of 3339, 900 West St.
11
-------
MOBILE RADIATION SURVEY
-2
, ...,...«, SALT LAKE CITY, UTAH H.por t Per i od: April 5 - 11, 1972
Ko.
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
lap
NE/4
Coord i net e
900W
900W
900W
1700W
900W
1300W
1000 W
3300S
3200S
3100S
2910S
2550S
2870S
2100S
2100S
3300S
3300S
Address
881, 3300 South Street
T^ilSW file. 900 West
Vacant Land, 900 West St.
Sierra Corp., 900 W. St.
Vacant Land, 900 W. St.
3237, 900 W. St.
3215, 900 W. St.
3195, 900 W. St.
Old Tailings Pond, 900 W. St.
Old Tailings Pond, 900 W. St.
Vacant Land, 900 W. St.
2550. 900 West St.
2560, 900 West St.
Grand Central Warehouse, 900 W. St.
Vacant Land, 900 W St.
Mill Creek, 900 W. St.
Vacant Land, 900 W. St.
Vacant Land, 900 W. St.
Vacant Land, 900 W. St.
Standard Station, 2100 So. St.
Address.72100 So.
989 Jewel Ave .
Vacant Lot, 3300 So . St .
Vacant Lot, 1000 West St.
999, 1000 West St.
Vflr-ant Lot-, 3300 SnnfJi Sr
949, 3300 South St.
Vacant Lot, 3300 South St.
Btck|t ound
Counts/Sic.
625
625
625
625
625
625
625
625
625
625
625
375
375
550
550
550
550
550
550
413
375
325
500
525
525
525
525
525
In. 0*11.
Counts/Sec.
1,400
3.300
4,600
4,500
5,450
6,000
7,700
10,200
23,750
14,750
1,088-2,900
525
588
913
1,300
1,700
5,400
6,200
2,000
3,400
488
47b
675
675
638
813
875
888
Consents
900 West and 3300 South. East side
South Salt Lake City Limits Sign
Tailings Pile due East
North of Sierra Corp .
North of 3195, 900 W. St., continuing 560 feet to Creek
From small creek north to Mill Creek, East side
From Mill Creek north to railroad, East side
South of Grand Central Warehouse
West side of road
From Mill Creek North to Small Creek, West side
260 feet north of Small Creek, West side
West of Tailings Pile at 3300 So. St .
Redwood Road & 2100 So. St.
West of 940, 2100 South Street
Briclcs, two feet away frOm truck
140 feet East of 1061, 3300 South St.
North of 3363, 1000 West St.
East of 999, 3300 South St.
Southwest of Tailings Pile
East of 949, 3300 South St.
!!*
1*1
il'i
is:
±i
u
D
-------
MOBILE RADIATION SURVEY
-3
No.
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
__Z5-
76
77
73
79
80
81
82
83
84
Map
NEl/<
Coordi nate
900W
700W
500W
300W
500W
700W
900W
6 W
3300S
3300S
3300S
3300S
3300S
800S
130QS
UOOS
Address
925, 3300 South St.
881, 3300 South St.
871, 3300 South St.
863, 3300 South St.
855, 3300 South St.
845, 3300 South St.
837, 3300 South St.
Vacant Lot, 3300 South St.
681. 3300 South St.
671, 3300 South St.
661, 3300 South St.
651, 3300 South St.
647, 3300 South St.
585, 3300 South St.
Western Salvage, 3300 So. St.
Vacant Land, 3300 So. St.
315, 3300 So. St.
Vacant Lot, 3300 So. S4.
Vitro MU1, 3300 Saasfa St.
Vitro OfSce, 3300 South St.
Parking LOT, 3305 SoiKn St.
Tailings Pile, 3300 So. St.
Tailings Pile, 3300 So. St.
Tailings Pile, 3300 So, St.
Vacant Land, 3300 So. St.
M.J.B.T., Genesee
Machinery Center, 6th W
1101, 6th W. St.
Background
Counts/Sec.
525
525
525
525
525
525
525
525
525
525
525
525
525
525
525
525
375
425
425
"" -525
425
425
i-25
Hi. Dell.
Counts/Sec.
1,163
1,600
1,688
2,063
2,500
2,550
4,475
6,800
1,850
1,650
1,695
1,725
1,400
838
800
863
575
988
1,988
, 1,575
"T.stm
12,750
14, 875
19,500
1.975
J75 |_ 525
37S [ 763
j?5 j 563 ^
Report Period:^1113-"' W*
Counts
South of Tailings Pile
East of 837, 3300 So. St. south of tailings
THrFBSfik from 500 W to Railroad Underpass !
DLrt bank, East of Vitro Uranium Mffl j
i
1
Weai'wi Vitco'sUiiice - ' ' " ~J;
From r Hiking Lot, West «> Opposire 700 tV
West, opposite 700 W, to paved road
Opposite 835 West St.
From 900W to KCPX Padio Station
Brick, West of 723 Genesee
North of 1201, 6th W \
\
-------
u
z
v j • 1
3 "• l
z to f
I21
'^i
MOBILE RADIATION SURVEY
,...t. ^ SALT LAKE CITY, UTAH „,„,, , p§, , „„. April 5-11, 1972
to.
85
86
87
88
lap
NI-/4
1
Coordinate
6 \V
3 \V
6' XI \V
I .);>!> \V
900 S
1355 S
800 S
•100 S
Address
Pacific Metal, 6th W. St.
•105 California St.
615, 800 South St.
I.DS Church, 1311, lola St.
Background
Counts/Sec.
375
375
350
-!00
•si. Dell.
Count J/Sec.
625
838
488
538
Coaaent t
Brick. 240 feet north of 977, 6th West
Portland Cement offices
Urlck
-------
SUMMATION: MOBILE RADIATION SURVEY
Salt Lake City, Utah
SURVEY COMMENCEMENT DATE:
CURRENT REPORT PERIOD
April 5, 1972
April 18-27, 1972
Survey Days
Prior to Report Period
During Report Period
Structures Surveyed
Prior to Report Period
During Report Period
Radiation Anomalies
Prior to Report Period
During Report Period
Total
7.00
8.00
15.00
3,871
6,995
Total 10,866
Total
35
123
Miles Surveyed
Prior to Report Period
During Report Period
Total
54.90
66.40
121.30
80
-------
UOBILE RADIATION SURVEY
, „..,..,.,., SALT LAKE CITY. UTAH Itpcrt Pirietf: April 18-27, 1972
lo.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
IB
19
20
21
~22
2.3
2-1
2S
26
' i 7
n,;
Map
NI-:I/'
Coot dln*ti
1300W
900 VV
900 W
OIK) \Y.
900 W
1500W
1500W
i;ioo\v
yoow
coo w
700W
90OW
looo\V
I300W
i :!oo w
900W
noow
! IOOW
KIOO'.V
HUOW
121 K)W
' KIOOW
1400W
I200W.
i.tuow
tool-;
( v : - 1 1 v,
- - - - )
800S
500S
400S
4oos
300S
700S
900S
200S
400S
•loos
400S
2 01 IS
200S
• 200S
2UOS
IOOS
HK1N
IOON
SOON
-IOON
1100N
1 JUON
1000N
ZU<>;i
S(U),M
J'JOOS
.I'll IDS
UI-. -d\v' :!7()()S
Address
1400 Indiana Avenue
484, 9th West Struct
1036, 400 South Street
Church,. Goslien Street
325 and 329 Post Street
Old Vacant School, Wasatch
Address 7, Indiana Avenue
Navajo Street Underpass at 200 g St.
402, 900 West Street
412, 600 West
Krtclmm's ! Lirdv/are, 400 S.
9ih\V. St. UIH'KTP.TSS atl-SO
175. 10th West St.
151 Navajo Street
122 N.ivajo Street
930, 100 South Street
Building No. 11, State Fairgrounds
Coliseum , State I-'airyrounds
4Hb Colorado Sireet
Church, Grant Street
130-1 Valentine Sireet
Address, J upa/. Si .
Nnrtlr.ve.'it Jr. ili School, Goodwin
Clriivli. I'n. cure Drive
6 10 C'olorailo Si rcct
Vacant Lot, 3"(iO Soulli St.
!.'! id Sdiilh M i in M I'l'rt
1 ire Iliaiiou, T/';.0 So. M.ilu
BaeVjround
Count i/Jec.
425
375
400
375
375
475
400
450
" 375
375
350
375
425
375
375
375
375
413
42.T
375
400
400
375
•W
400
425
•UK)
•175
Mil. 0
-------
MOBILE RADIATION SURVEY
SALT LAKE CITY. UTAH
i April 18-27. 1972
Ho.
29
30
31
33
3-1
35
1
Bap
NM1/-
Coordlnstt
300 W
300 \V
100 E
j(H)li
IIXIK
KWK
loo ;•:
3300S
3300S
3 COOS
3KX1S
3 SOUS
36(X)S
3900
Address
3451,300 West St.
3365, 300 West St.
Bank, Corner of Helm & State St.
3:! 19 South State Street
3566 South State Street
Dace Sporiim;, South State St.
Aibcrt.son's, South State Street
Background
Counts/Sec.
425
450
375
388
400
400
•100
Has. Deli.
Counts/Sec.
550
2,375
500
513
513
538
575
CeaaenJi
Drlck, east side
Brick
Brick
Hrick
Brick
CN
CO
-------
SUMMATION: MOBILE RADIATION SURVEY
Salt Lake City, Utah
SURVEY COMMENCEMENT DATE: April 5, 1972
CURRENT REPORT PERIOD : May 3-6, 1972
Survey Days
Prior to Report Period 15.00
During Report Period 3.50
Total 18.50
Structures Surveyed
Prior to Report Period 10,866
During Report Period 2,364
Total 13,230
Radiation Anomalies
Prior to Report Period 123
During Report Period 47
Total 170
Miles Surveyed
Prior to Report Period 121.30
During Report Period 20.03
Total 141.33
83
-------
MOBILE RADIATION SURVEY
r riilllirmi wu.njviuiuin.uiAn SejjeM P.ned: «»7 --»."'-
HO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
17
18
19
20
21
22
23
2-1
25
2(,
) H,
lap
Nl/2
1
Coot dinats
2001'
IOOK
lOOtf
0
mm-;
IOOW
1 00 W
200W
IOOK
IOOK
IOOK
IOOK
IOOK
IOOK
IOOK
JI'OI-
IOOK
IOOK
IOOK
looi-:
IOOK
IOOK
IOOW
IOOW
200 W
200 \V
3400S
3050S
2950S
2S50S
2S50S
2 I50S
2050
3300S
2400S
2700S
3030S
30-10S
3UOOS
2'»35S
2600S
2560S
25J.OS
2300S
2300 S
2300S
2300S
25bl)S
2550S
2W)OS
2<>OOS
'2 (oOS
1i>D\"i .lliH!S
> . _. _
1IH)\V .I'lKiS
Address
Address 7, State Street
Holiday Inn Cafe, Crcsson Street
2955-2975 West Temple
2S80 South Main Street
Address, Lntiise Street
2-165 West Temple
2650 West Temple
Addi'ess ? Walton Street
Underpass, 1-80 & State Street
27-10 Soutli State Street
3035 South State Street
3040 South State Street
3007 Soutli Stale Street
2935 Soutli State Street
2615 Soutli State Street
2^61 South Sr.-te Street
2567 Soutli State Street
Address 7, Burton Avenue
62 IKirton Avenue
7 Burton Avenue-
Address ? Burton Avenue
2550 South State Street
2550 Webt Temple
150 Stratfonl Avenue
Vacant Lot, Stratford Avenue
170 Crystal A\c!;u<:
««l !r-.-.:. 7, U\.-.t -fe-mpio
3; Mill'ji: Si.ri.-ci
Background
Counts/Sac.
400
400
375
375
350
400
350
400
375
375
425
425
400
400
375
375
375
375
375
375
375
3V b
375
375
375
375
375
375
«si. Qell.
Counts/See.
563
625
550
475
475
525
450
713
525
4S8
525
500
500
550
475
500
500
575
475
525
550
iiOu
488
488
1, 125
550
51 1
•i;s
Casasfif s
Brick, Corner of Ford & State, South Side
Parkinj; Lot In rear
Large Brick Building
Brick
Brick, Fast of 80 Louise St.
Brick
Brick
Yard, Old equipment, 120 feet west of 129 Walton
Concrete
Brick
Driveway
Brick 7
Brick
Brick
IJrick
West of 37 Burton St., Cinder Block
Briek
Ilowc Rental, l£aat of 22 Burton Avenue
"Brick" ~
Brick
Briek
V.V-.st of 150 Stratford, near railroad
NV-ar railroad
11 rii. k, At m.s.s llic street frnni 31-10 W Trmjilc
00
-------
u
1 11
ft
II*
MOBILE RADIATION SURVEY -2
._,,„,„, SALT LAKE CITY, UTAH ,„,„ .„,„„. May 3-6, 1972
le.
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
4-1
45
46
47
Jr-
• >P
Nl/2
Coordinate
O-E,O-V
••
••
••
"
1 00 W
1001;
KxiK
300 1 •:
300I-:
ssni-:
550 !•)
S.SOli
5501-
IOOI'
IOOM
O-K,0-\\
••
IOOW
2500S
2500S
2500S
2700S
2700S
2700S
2700S
27(K)S
2700S
2SOOS
2700S
2700S
27(K)S
2700S
2WH1S
2500S
23(X)S
2300S
23(X)S
Address
Underpass of 1-80 & Main
Bontlwood Bowl, Will dock
2511 West Temple
270 1 South Main Sircct
2685 South Miln Street
Address?, West, 2700 South Street
14 Hast, 2700 South Street
2700 South State St.
Church, 2700 South St.
2782 BUilr Street
5()3 I'.i.st, 2700 So. St.
555 I'!;!:, t 2700 So. St.
547 1-last 2700 So. St.
545 liabt 2700 So. St.
2547 Soutli State Slrect
School, Oa kKi ml Avenue
2319 Soutli State Slrect
AiULross ?, South State St.
2325 Soutli State Street
Background
Count s/S»c.
375
350
350
350
350
375
375
375
400
350
375
375
375
375
375
400
375
375
350
Mai. Oefl.
Counts/Sec.
588
588
750
525
488
475
488
588
550
463
475
475
475
475
525
600
463
538
450
Coeients
Concrete
Brick, three feet away
Brick, two feet away
Stucco, four feet away
Brick
Brick, east of 31 West 2700 So. St.
Brick
Brick, Hast of 300 East, South Side
Brick
Brick
Brick
Brick
Brick
Brick
Brick
Brick, across the street. West of 2319 State
Brick
CO
01
-------
SUMMATION:
MOBILE RADIATION SURVEY
Salt Lake City, Utah
SURVEY COMMENCEMENT DATE:
CURRENT REPORT PERIOD :
Survey Days
Prior to Report Period
During Report Period
Structures Surveyed
Prior to report period
During report period
Radiation Anomolies
Prior to report period
During report period
Miles Surveyed
Prior to report period
During report period
AprilS, 1972
June 9 - 13, 1972
Total
Total
Total
13,230
3,149
16,379
170
25
195
Total
141.33
27.89
169.22
86
-------
o
52
?z
» ,»„»
go
*""" t f •
CO
IP
oo
MOBILE RADIATION SURVEY
,... t,,.K... ... — SALT LAKE CITY, UTAH RiMrtPtHeri: lune 9-13. 1972
He.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
l<>
20
21
2.1
2-1
25
• »P
Nl/2
Cooitfincte
200 li
2(X)K
31X1K
500 K
5(10 !•:
7(X)K
7ix)K
7(X)K
700 K
700 K
7ix)K
7ix)K
7( «)!•:
900 K
900 ic
_J.>OUK_
9001':
900I-:
nx)K
2200S
2200S
2-100S
2400S
2700S
300S
300S
•loos
1700S
2200S
2-lOOS
I-IOOS
9oos
. I (X)S
2 SIX IS
3300S
21>50S
2700S
2700S
2-lOOS
2IOOS
J300S
I I DOS
3.100S
3900S
Iddrtss
Junk Yard, 2nd East
Address 7, Went worth Avenue
Underpass, 3rd Kast & Highway 80
Underiwss, 5tl\ Muse & Uigliway 80
SOI Must, 2700 Soutli
342 Siuiili, Si-vcnlh Kast
350 South, Seventh Must
•MO South, Seventh Kast
IIu wtlnrnc Si'luxil, 7t!\ E .
2226 South, Seventh Kast
Underpass, 7th K. & Highway 80
13'jy Soutli, 7th Kast
Addrvss 7, 900 S., 700M
Address ?, 700 Kast
2795 South State Street
Ml K, 3185 South Street
Motel, Garden Street
Church, 3rd K ist
Address ?, 900 Kast
Underpass, 900 Kast Ki Highway 80
2179 South, 900 Kast
1307 South, 900 Kast
1093 South, 900 Kast
3230 South, 900 Kast
1V./..I I'lace, 3900 South
BicKfround
Count s/Jec.
350
375
375
375
375
350
350
375
375
350
350
375
375
375
375
375
375
400
425
400
375
400
375
400
375
KM. Dtfl.
Count j/See.
500
500
663
588
563
475
4-75
475
550
463
4H8
488
475
600
575
725
500
525
525
550
500
513
488
525
538
Ce«a«ntt
West side, 360 feet south of Wcntworth Avenue
Drlck, west of 134 Wentworth Avenue
Concrete
Concrete
Brick
Brick
Brick
Brick
Brick
Brick
Concrete
Brick, North of 919 S, 700E
Brick, South of 100 South, Kast side
Brick
Driveway, Kast of 135 K, 3I«b South Mreet
Brick, West of 116 Kast Garden Street
Brick, North of 2721 S., 3rd.li.
Market, Brick, North of 2713 S., 900K .
Concrete
Brick
Brick
Brick
Brick
buck, 100 feet West of 1 23 F. ,. 3900 S.
-------
SUMMATION: MOBILE RADIATION SURVEY
Salt Lake City, Utah
SURVEY COMMENCEMENT DATE: April 5, 1972
CURRENT REPORT PERIOD : June 20-27, 1972
Survey Days
Prior to Report Period 23.50
During Report Period 7.00
Total 30.50
Structures Surveyed
Prior to Report Period 16,379
During Report Period 3,778
Total 20,157
Radiation Anomolies
Prior to Report Period 195
During Report Period 5
Total 200
Miles Surveyed
Prior to Report Period 169.22
During Report Period 42.69
Total 211.91
88
-------
MOBILE RADIATION SURVEY
SALT "« CITY' ™ l.p.rt F,,..<: J— 20-27. 1972
«».
1
2
3
4
5
• 19
Nl/2
Coortfinita
2700W
2 700W
2000W
3200W
3520W
3650S
3650S
3500S
4100S
3900S
tddrtss
3690 South, 2740 West
3687 South, 2740 West
Address 7, 3500 South
Address 7, 4100 South
3S95 South, 3520 West
Backfround
Counts/Sec.
400
400
375
375
375
Mil. DBfl.
Count J/Jec.
525
4,900
525
1,625
525
Coaetntt
Granger Area
West of 1962 West, 3500 South
West of 3266 West, 4100 South
yi
i"H
" _ s
5il
-j 4
CO
UJ
-------
SUMMATION:
MOBILE RADIATION SURVEY
Salt Lake City, Utah
SURVEY COMMENCEMENT DATE:
CURRENT REPORT PERIODS :
April 5, 1972
July 11-18, 1972
July 24 - August 1, 1972
Survey Days
Prior to Report Period
During Report Periods
Total
Structures Surveyed
Prior to Report Period
During Report Periods
Total
Radiation Anomalies
Prior to Report Period
During Report Periods
Total
Miles Surveyed
Prior to Report Period
During Report Periods
Total
30.50
16.00
46.50
20,157
8.860
29,017
200
38
238
211.91
116.58
328.49
90
-------
fo»« \.n- tt.. i > i t|. toi
MOBILE RADIATION SURVEY
SALT LAKE CITY, UTAH
July li-18, 1972
iipori Ptftod: July 24 - August 1.
Ko.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Map
N-l/2
N-l/2
N-l/2
N-l/2
Coordinitt
205 OW
6000W
8400W
9100W
9100W
9100W
9100W
9100W
9100W
9100U
9150W
9150W
8800W
8850W
8850W
8900W
8950W
9100W
8950W
8950W
8950W
905 OW
905 OW
8950W
8800W
8650W
8650W
8600W
3145S
3500S
3240S
2900S
2860S
2700S
2700S
2700S
3000S
3100S
2700S
2700S
3100S
3000S
2800S
2800S
2800S
2900S
2700S
2700S
2700S
3000S
3000S
3000S
3000S
2800S
2800S
2700S
Address
3130 South, 2050 West
Whittler School
8390 West Powell Street
Address.?, 9100 West, 2900 South
Address ?, 9100 West 2860 South
9080 West, 2700 South
Address ? , 9100 West
Rexall Drug, 2700 South
2960 South, 9100 West
3068 South, 9100 West
Bank, 9150 West, 2700S
Address ? , 9150 West
8810 West, 3100 South
Vacant Lot, 8850 West
2828 South, 8850 West
2792 South, 8900 West
8927 West, 2800 South
2891 South, 9100 West
Theatre, 8950W, 2700S
Mjgna Water, 8950 W, 2700S
Vacant Lot, 8950 West
Vacant Lot, 9050 West
Vacant Lot, 9050 West
A6G Market, 8950 West
School, 3000 South
2817 South, 8650 West
2824 South, 8650 West
2711 South, 8600 West
Background
Counts/Sac.
400
425
375
425
375
425
375
375
400
400
375
375
388
375
425
425
400
425
400
400
400
375
375
375
375
425
425
375
•ai. Oatl.
Count s/Sec.
1,450
575
488
525
475
575
475
563
500
500
613
588
50O
488
525
575
588
600
700
563
538
500
513
475
538
525
525
538
Coioents
Front Yard
Brick -L
Southeast Magna Area
Brick, north of 2900 S, East Side
Brick ?, south of 2860 S, East Side
Brick, "Out House Bar"
Brick, north of 2700 S, East Side
Brick
Brick, 10 feet away
Brick, 15 feet away, South of 2700 S, West Side
South of 2920 South, 8850 West
Stucco
Brick
Brick, 15 feet away
Brick, 20 feet away
South of 2700S, West Side
North of 3017 So., 9050 West
South of 2979 So., 9050 West
Brick
Brick
a
I
3
?
4
I
\
O.
^_
I/I
J
- 8
i>
5"!l
^£ i i !
i— ; s «
~ i ! I
! 5 6
tO M *
_^ 5 8
-^ J
_ w
\^J t-
—r 1^
§
•
e
3
s
z
0
H
¥
3
-»
o
Z
<
t
0
-------
t
ll
ll
Pag. 2 MOBILE RADIATION SURVEY
July 11-18, 1972
,,.. ,....,,, ,,,.„, SALT LAKE CITY, UTAH R«pOft Pir.od: July 24 - August 1. 1972
Ho.
29
30
31
32
33
34
35
36
37
38
Hip
N-l/:
Coord i nit e
8600W
_2JQQW
1300E
2300E
1300E
1100E
1300E
1300E
3400E
2300E
2700S
9jpos
3300S
3300S
3300S
3300S
3700S
3700S
3900S
3700S
(dduss
Vacant Lot, 8600 West
2180 DeLona (Chestnut on Map')
1444 East, 3300 South
2405 East, 3300 South
Lumber Yard, 3300 South
1103 East, 3300 South
1445 East Murphy's Lane
1435 East Murphy's Lane
Underpass 1-215, 3900 South
3695 South, 2175 East
Background
Count s Sec.
375
375
400
375
375
400
375
375
400
400
Kai. 08(1 .
Counts Sec.
513
750
488
- 475
538
500
450
525
513
500
Coaujnl s
North of 2634 South, 8600 West
Buena Vista Area
Brick, 15 feet away. West of 3270 Highland Drive
Brick 15 feet away
Brick £c Rock
Brick & Rock
Concrete
Jl
CNJ
CTi
-------
SUMMATION: MOBILE RADIATION SURVEY
Salt Lake City, Utah
SURVEY COMMENCEMENT DATE: April 5, 1972
CURRENT REPORT PERIODS : August 9 - 15, 1972
August 22 - 29, 1972
Survey Days
Prior to Report Period 46.50
During Report Periods 13.00
Total 59.50
Structures Surveyed
Prior to Report Period 29,017
During Report Periods 6,986
Total 36,003
Radiation Anomalies
Prior to Report Period 238
During Report Periods 23
Total 261
Miles Surveyed
Prior to Report Period 328.49
During Report Periods 61.54
Total 390.03
93
-------
m wu i l. L. it n u i n i < wii « v it i «. i AugUft » " 15 , 191 Z
RiB«it Nftod- Au8u»e 22 - 29, 1972
Ho.
1
2
3
A
5
6
7
8
9
10
It
12
\3
I/.
15
16
17
1H
ID
20
21
22
23
Hap
N I/;
II
ll
"
II
It
II
II
>t
II
It
II
If
It
11
l»
tl
II
It
'•
"
u
II
t
Coordinitt
3400S
3760S
3500S
3500S
3300S
3100S
2600S
2700S
30003
3000S
3200S
3100S
3000S
31003
3300S
3100S
270051
2900S
2'iOOS
2r)OOS
3JOOS
3300S
•jonos
2700E
3500E
3G50E
3900E
3HOOE
7006
JiOOE
1000E
1300E
1300E
1 lOOli
1 IOOE
IOOOE
I IOOE
1100E
1 300E
900E
1500E
1 300K
1500E
KOOE
1600!-:
1300E
Itfdrtss
Old Mill, Evcrcrcen
Underpass, 1-212 S, 3760S
LDS Church, Mill Stream Lane
3/i 3 1 So. Crostwood Drive
3351 & 33b7 Soulh Crestwood Dr.
Church, Jc|>]).-:on
2583 South, 800 East
Adtlrcss ? , 1000 Eaut
Dank, Elpln & Highland Dr.
3010 South Richmond
3194 South Riches Avc.
Brick yard, Welhy Avenue
1005 E. Austin
llrlck yard, 1100 East
Address ? , 1100 East
Villa, Gunn and Highland
A.'.C. Market, 2700 South
1527 Zenith
2>'i20 Highland Drive
AMI Market, Glcnmore & Stratford
Church, Woodland 4 Highland Drive
Address ?, 1575 East
AJJresa ? , 3000 South
Background
Counts/Sec.
375
AGO
425
475
375
375
375
375
375
400
425
375
400
400
413
375
375
400
375
375
375
400
375
an. Deli.
Count s/Ste.
513
588
525
613
475
588
' 525
513
500
500
538
513
513
713
613
588
525
600
538
488
725
525
550
Coaftints
West of 27SO Evergreen
Concrete
Brick
Soil embankment
Brick, west of 727 East Jeppson
Urick, north of 2756 South, 1000 East
Brick
Brick
Stucco
Corner of Wclby & 1100 E, south side
Brick
Ut-twecn Welby and Riches, both aldea of atrcet
Brick, south of 3233 South, 1100 East
Brick
llrlck, East of 900 East, South Side
East side of house
100 feet south of Tower Transformers
Brick
Urick
Brick, Corner of 1575 E & 3300S, West side
Brick, Corner of 3000S and Highland, East side
CTl
-------
SUMMATION: MOBILE RADIATION SURVEY
Salt Lake City, Utah
SURVEY COMMENCEMENT DATE: April 5, 1972
CURRENT REPORT PERIOD : September 14-21, 1972
Survey Days
Prior to Report Period 59.50
During Report Period 7«00
Total 66,50
Structures Surveyed
Prior to Report Period 36,003
During Report Period 3,298
Total 39,301
Radiation Anomalies
Prior to Report Period 261
During Report Period 11
Total 272
Miles Surveyed
Prior to Report Period 390.03
During Report Period 26.90
Total 416.93
95
-------
MOBILE RAOIATiON SURVEY
a*.
i
2
3
4
5
6
7
8
9
10
11
Hip
N i/:
/"
/
\
\
/
/
Coerd
2700S
2920S
2980S
3300S
3300S
3300S
3300S
33003
3300S
3300S
900S
n»tl
2000E
2000E
2700E
100E
100E
100W
200W
iooy
200E
700E
400E
Iddrist
2730 South, 2000 East
LDS Church, Mary Dot Way
2980 South', 2700 East
67 East, 3300 South
Church. 3300 South
10 West, 3300 South
184 West, 3300 South
Vacant Lot, 3300 South
220 East, 3300 South
704 East, 3300 South
922 South, 400 East
gickf reund
Counts/Sic.
375
375
400
375
375
375
375
375
375
375
325
ill. 9>d.
Count j/S»e.
488
500
575
538
550
488
3,900
550
488
488
500
Reperf ttitat: September 14-21, 1972
Gssiints
Brick
Brick
Brick
West of 67 East, 3300 South, Brick
Brick
Mountain States Supply Company
East of 157 West, 3300 South
Brick
SM
11'
a-gj
c/i h
-------
APPENDIX C
RECOMMENDATIONS OF ACTION FOR RADIATION EXPOSURE LEVELS
IN DWELLINGS CONSTRUCTED ON OR WITH URANIUM MILL TAILINGS
External Gamma Radiation
Level
Greater than 0.1 mR/hr
From 0.05 to 0.1 mR/hr
Less than 0.05 mR/hr
Indoor Radon Daughter Products
Level
Greater than 0.05 WL
From 0.01 to 0.05 WL
Less than 0.01 WL
Recommendations
Remedial action indicated
Remedial action may be suggested
No action indicated
Recommendations
Remedial action indicated
Remedial action may be suggested
No action indicated
EXPLANATORY NOTES
1. These recommendations are written specifically for dwellings con-
structed on-or with uranium mill tailings. This situation may involve
continuous exposure of members of the public to radon daughter product
activities and whole-body gamma irradiation levels in excess of the
background radiation levels found within dwellings in the area not con-
structed with or on uranium mill tailings.
97
-------
2. Although the initial concern was the presence of radon daughter
product activities within these dwellings, preliminary surveys have
indicated that, in some instances, the gamma radiation levels were
of prime importance. Thus, recommendations are made concerning both
Cypes of radiation. The recommendation applicable to a particular
dwelling will be determined by whichever type of radiation has the
higher level.
3. Three levels for action are recommended for both external gamma
and radon daughter product exposures. This graded system of actions
is proposed to allow latitude in the middle ranges for the judgment
of the on-site investigators.
A. The external gamma and radon daughter product levels proposed
constitute exposures which are in addition to the natural background
levels found within dwellings in the area not constructed on or with
uranium mill tailings. In the Grand Junction, Colorado, area these
levels are approximately 0.01 mR/hr (approximately 90 mrem/yr) and
0.004 Working Levels (WL) (approximately 0.2 CWLM/yr) respectively (1)
5. The expected health effects of concern will be different for the
two types of radiation, i.e., leukemia for whole body gamma radiation
exposure and lung cancer for. exposure to inhaled radon daughter
products. This expectation is based, in part, on findings derived
from population studies such as the Japanese atomic bomb survivors
and uranium miners. These specific health effects are considered to
be mutually exclusive. The basis for this assumption is that the
98
expected radiation contribution to whole body exposure from inhaled
-------
radon and daughter products would be considerably less than the direct
exposure from external gamma radiation at the levels encountered in
the dwellings. Conversely, the external gamma radiation contribution
to the lung dose is considered to comprise a negligible additional
risk of lung cancer.
6 a. A Working Level (WL) is the term used to describe radon daughter
product activities in air. This term is defined as any combination
of short-lived radon daughter products in 1 liter of air that will
"result in the ultimate emission of 1.3 x 10 MeV of potential alpha
energy (2) . The numerical value of the WL is derived from the alpha
energy released by the total decay through Ra C' of the short-lived
radon daughter products, Ra A, Ra B and Ra C, at radioactive equi-
299
llbrium with 100 pCi of Rn per liter of air (3).
6 b. A Working Level Month (WLM) is the term used to express the
occupational exposure incurred in one working month of 170 hours by
a uranium miner laboring in an atmosphere containing radon daughter
products; i.e., one working month in a mine atmosphere containing
1 WL of radon daughter products equals 1 WLM.
6 c. Cumulative Working Level Months (CWLM) is the term used to
express the total accumulated occupational exposure to radon daughter
products in air; i.e., an air concentration of radon daughter prod-
ucts of 1 WL would, in one working month, equal 1 WLM, and in 1 year
or 12 months would equal 12 CWLM.
6 d. Since occupational exposures arc based upon 170 hours per
99
month and continuous exposure involves approximately 170 hours per
-------
week, then an occupational exposure to an air concentration of 1 WL
is equivalent to continuous exposure to 0.25 WL.
7. These recommendations are based on the assumption of a linear,
non-threshold dose-effect relationship. The lack of definitive
information precludes allowances for possible differences in radio-
sensitivity due to age, sex, or other biological characteristics.
8. No action is indicated when the external gamma exposure rate is
less than 0.05 mR/hr and the radon daughter product activity is less
thai) 0.01 WL since under conditions of continuous exposure these
levels would result in maximum annual exposures of approximately
400 mrera and 0.5 CWLM, respectively. The maximum annual value of
400 mrera is less than the dose limits recommended for an individual
member of the general public by the FRC (4) and ICRP (5) for whole
body exposure to external gamma irradiation.
The ICRP (5) recommends that the annual dose limit for members of
the public shall be 1/10 of the corresponding annual occupational
maximum permissible dose. The maximum annual value of 0.5 CWLM of
radon daughter product exposure is approximately 1/10 of the 4 CWLM
annual occupational exposure limit recommended by the FRC (6) for
implementation on 1 January 1971, and less than 1/20 of the annual
occupational exposure limit of 12 CWLM recommended for uranium miners
in the present FRC regulations (4).
9. Remedial action may be suggested in the case of external gamma
exposure rates of 0.05-0.10 mR/hr or radon daughter product activ-
ities of 0.01-0.05 WL since under conditions of continuous exposure
100
-------
these levels would result in maximum annual exposures of approximately
400-900 mrem and 0.5-2.5 CWLM. The upper limit of these ranges
exceeds the strictly applied recommendations of the FRC and ICRP for
exposures of an individual member of the public. However, this
extension seems justified in situations in which unforeseen exposures
have occurred, since as stated by ICRP (5) "in general it will be
appropriate to institute countenneasures only when their social cost
and risk will be less than those resulting from the exposure." It
is further stated by the ICRP (5) that very low levels of risk are
implied in the dose limits for members of the public and that it is
likely to be of minor consequence to their health if the dose limits
are marginally or even substantially exceeded.
10. Remedial action is indicated at gamma exposures greater than
0.1 njR/hr or at radon daughter product activities greater than
0.05 WL. Under conditions of continuous exposure, these levels
would result in minimum annual exposures of 900 mrem and 2.5 CWLM.
All values above these would indicate the necessity for remedial
action, since at these levels the maximum annual exposures recommended
by the FRC and ICRP for an individual member of the public is exceeded.
11. With respect to the external gamma irradiation, from the esti-
mates published by ICRP (7), it can be interpolated that the annual
risk of leukemia under conditions of continuous exposure to 500 mren
per year is an increased incidence of about 10 cases per year per
million persons exposed. The natural annual incidence of leukemia
'for all ages is given by ICRP (8) as 10-100 cases per million persons.
101
-------
With respect to radon daughter product exposures, it has been estimated
by Archer and Lundin (9) that an exposure of 120 CVLM to a group of
white adult males in the United States appears to approximately
double the normal lung cancer incidence which for this population is
about 2-3 cases per year per 10,000 persons. At an annual exposure
of 2.5 CWLM, 48 years would be required to reach 120 CWLM.
12. It is considered that implementation of these recommendations
for the various exposure ranges would make it highly unlikely that
any serious health effects would result from exposure to radon
daughter products or external gamma irradiation in this particular
situation.
13. It is suggested that remedial action be taken only after an
adequate number of measurements taken under a diversity of temporal
and climatic conditions have clearly established that the average
exposure is in excess of 0.1 mR/hr or 0.05 WL.
14. It is recognized that some time lapse will be inherent in
establishing that radiation levels in excess of 0.1 mR/hr or 0.05 WL
exist and in instituting corrective measures. However, it is con-
sidered that the additional health risks from continued exposure
over this time period are of lesser consequence than the economic
and social discomfitures of precipitous action.
Je
-------
References
1. Personal communication. Mr. Robert D. Siek, Colorado State
Department of Health.
2. U. S. Public Health Service Publication No. 494. Control of
Radon and Daughters in Uranium Mines and Calculations on
Biologic Effects, 1957.
3. Federal Radiation Council Report No. 8 Revised. Guidance for
the Control of Radiation Hazards in Uranium Mining, 1967.
4. Federal Radiation Council Report No. 1. Background Material for
the Development of Radiation Protection Standards, 1960.
5. Recommendations of the International Commission on Radiological
Protection. ICRP Publication 9 (1966).
6. Federal Register, Vol. 34, No. 10 pp 576-577 (1969).
7. The Evaluation of Risks from Radiation. ICRP Publication 8 (1966).
8, Radiosensitivity and Spatial Distribution of Dose. ICRP Publi-
cation 14 (1969).
9« V. E. Archer and F. E. Lundin, Jr.: Radiogenic Lung Cancer in
Man: Exposure-Effect Relationship, Environmental Research _1,
370-383 (1967).
103
-------
APPENDIX D.
UTAH COyPREHENSIVE BY CITYt* STREET ADD*
PAGE
C L
SALT
LAKE CITY.
UT
LOG. NO. ADDRESS
COVMFNTS
42534
A G13
42437
A 38C
• 01005 E
BRICK WALL
' 02782 S
ORE TO 300
AUSTIN AVE
S TO 16
BLAIR AVE
IN YARD
OCCUPANT
OWNER
FUNKHOUSER
FUNKHOUSER
01/09/73
HOG
LOG
00012
00008
I 00015
I 00010
HIG
tog
_OJ>OJ4
6
L
ft
S
S
1
1
T
Y
P
E
1
1
E
V
E
L
S
2
2
M
A
T
_L
1
i
c
R
E
_te_
7
1
JAJL
S A
0 6
0 6
42420 00007 E BURTON AVE
A 20C
42419 00062
A 19C
E BURTON AVE
6 9 7
42418 00035 E BURTON AVE
A 18C
NOLAN R
00012
00008
1 3. 1 2 7 9 5
697
42365: 00405
CALIFORNIA ST
A 86A
42385 00488 N COLORADO ST
A 19B UNEXPLAINED
42391 00610
A 258 BRICK TO
42526 03357
A G5 BRICK WALL
42525 03431
N COLORADO ST
18
S CRESTWOOD DR
S TO 19
VALLONE J
VALLONE J
VAUGHT J
VAUGHT J
SIMONSON JR
SIKONSON JR
695
00015 00019
;000ll 6 1121106
00016
•00009 1311706
00015 00012
0000$ 1 1121106
A G4 ROCK RETAINING WALL TO 28
00011
1221705
42426 0017Q CRYSTAL AVE
A, 26C UNEXPLAINED
UNKNOWN
..DELOMG.ST.
A F30 DELONG 500 TO 850 SOUTH
42361 00733 W GENESEE
_A_82JL_BRICK TO 18
M 'J. B CO
_GQODWlNjj
A 238 BRICK INSIDE TO 20
00016
J 312795
695
00016
00012
521 1705
NW_JR_ HIGH 00013'
SALT LAKE C SCH DT 00007
J)0013
9"-' 7 2 1..1-1 0 6
42539 02420 S HIGHLAND DR
A G1.9_BRICK V^AI LS Tn 17
GENERATING PLANT 00014'
_UTAH P¥R*LIGHT CO OOQlO
5131705
S_HIGHLAND_DJL..
A G23 BRICK WALLS TO 18
.NATIONWIDE .LOANS Q0015_
LANDES*SON5 INC 00010
_.0 0 01Z
9 6211106
42530 03020 S HIGHLAND OR
A G9_BEI£K_WALI.S TO 1&
VALLEY BANK*TRUST
J/ALLEY
00012 00012
J) 2 OQB 9" 5211106
,0309? $ HIGHLAND_DR_
A Gi6 BRICK WALLS TO 16
.VILLA THEATRE _
NATIONAL GENERAL
00012 00012
00008
42368 01400 W INDIANA AVE
A 01B BRICK TO 18
POPLAR GROVES DAY
00012
00010
9" 69 1106
7131705
104
-------
UTAH-COMPREHENSIVE .BY CITlt__SlRE
SALT LAKE ClTYt UT
LOC.NO. ADDRESS
r- COMMENTS
£T ADD« PAGE
01/09/73
OCCUPANT
OWNFR
HOG
LOG
HIG
LOC
r i s
L T E H C
__A Y Sf A P
S P E T E
S F L L F
_LL
S
F
_M_
A
P
— — — — — — — — — •—— ... — . , _ ,..„ — ........... S N
42373 01527 W INDIANA AVE
& 7R
42343 . 009f»9__ JE«£LL_AYE___
A 50A ROCKS TO 27
42429 02440 S MAIN ST
A 29C UNFXPI ATNJFD PnSS GFOMFTRY
42430 02500 S MAIN ST
A 30C UNEXPLAINED
42433 02685 S MAIN ST
A 33C UNFXPI AINED
42432 02701 S MAIN ST
A 32C
42404- 02880 S MAIN ST
A 04C UNEXPLAINED
42393 03336 S MAIN ST
A 27Q T NE' •*• SH CRNRS OF BLDG
42394- 03700 S MAIN ST
A 28B T ENTIRE AREA
42428 00037 W MILLER ST
A 28C
42524 03650 E MILLSTREAM LN
A 63 BRICK WALLS TO 20
42519 01435 E MURPHEY LN
A F36 BRICK WALLS TO 18
42518 01445 E MURPHEY LN
A F35 BRICK WALLS TO 18
42381 00122 S NAVAJO ST
A 15B BRICK TO 18
42380 00151 S NAVAJO ST
A 149 UMADLF TO CK DRK-2ND_F_LQ.R
48374 OQ2QO S NAVAJO ST
A 88 HOG DUE TO GEOMETRY
42372 00327 S POST ST
A 05R HOG DUE TO GEOMETRY
42531 03010 S RICHMOND ST
A G10 BRICK WALLS TO 20
42445 S STATE ST
A 46C
AMERICAN STONE
ASTON DR
UNDERPASS 180
CITY OF SAl T L AKE
BONWOOD BOWL
WHITE W
MAIN ST POULTRY
NEALJ_ M
RITE WAY AUTO SALE
TAVISH F
HEWLETT 'PACKARD
CAPTOL INDUSTRIES
THE SHADE SHOP
LAYCOCK j
SLC FIRE DEPT
COUNTY OF SALT LAK
MILL CREEK WARD 13
IDS CHURCH
JOMES CL1 E
JONES CLi E
WANSLEY LF
WANSLEY LF
SILVEX IND
AFCO IND PARK
VACANT
HHY UNDERPASS
CITY OF SALT LAKE
VACANT AREA
BAGWELL V
8ASWELL V
W OF 2319 S, STATE
_000J4 00011
00007
00016
00010
9
6
52121
9 1
00013 00012
00009
00014
00009
00011
00009
OOJOO
00015
00400
OQ040
00015
00012
00015
00010
00010
00008
00012
00009
00013
00008
00017
00011
00016
00009
00015
00010
9
00013
9
00014.
9
00012
9
00110
5
00014
9
00012
6
00012
6
00014.
9'
00014
6
5211 1
52111
5 2
52211
52111
92111
6
8221 1
1 1 31 1
11211
5221 1
52217
9 1
0 1
21211
9
0
0
0
0
9
0
3
3
9
0
0
0
0
9
0
0
0
6 9
105
S
&
«,
6
6
2
6
7
j
5
6
6
6
6
S
6
7
6
7
-------
APPENDIX D (CONT
UTAH C
SALT L
:OMPREHENSIV
.AKE~CITY» U
E BY
T
CITY, STREET ADO., PAGE
01/09/73
LOG. NO. ADDRESS
COMMENTS
42448 02225 S
A 2D BRTCK TO 17
42444- 02319
A 45C
42446
A 47C
42409
023E5
02400
S
S
5
A 9C POSS DUE TO
42443
A 44C<
42442
A 43C
42422
A 22C
42416
A 16C
42417
A 17C
42415
A 15C'
42436
A 36C
42410
A IOC
02481
B_RJ.CK
02547
STATE
SIAIE
STATE
STATE
ST
ST
ST
ST
GEOMETRY
OCCUPANT
OWNER
DOG «• CAT HOSPITAL
DENKERS D
UNDERPASS HWY 1-80
CITY OF SALT LAKE
S STATE ST MADISON SCHOOL
TO 22-ADDRESS GUESS SLC SCHOOL DISTRCT
S
STATE
ST
UNEXPLAINED
02550 S
UNEXPJJUNED
02561
BRICK
02567
UNEXPL
02615
BRICK
02700
BRICK
. .02740
BRK TO
s_
TO 17
S
AINED
S
TO 17
. S
TO 18
S
STATE
STATE
STATE
STATE
STATE
STATE
17 CLOCKS
42461 02795 S
A 15D UNEXPLAINED
42405
A 05C
02862
BRICK
S
TO 17
STATE
ST
ST
ST
ST
ST
ST
TO 50
ST
STATE ST
42414 02935 S STATE
A I40I7D UN="XPI AINFD
42413
A 13C
42411
42412
A 12C
42398
mV32B
. 03007
T NEXT
03035
03040
* 2C-T
S
STATE
ST
ST
TO ST N OF DRWY
S
EB_A_
5
N *
03319 S
UNEXPLAINED
STATE
12C
STATE
W OF
STATE
ST
ST
BLDG
ST
FIRESTONE TIRE
LARSON R
THE ASSOCIATES' FIN
FAIRCLOUGH A
PRINTING
LARSON R
SANDERS WIN SHD CO
SANDERS R
CHARELSWORTH
CHARELSWORTH
MASTERCRAFT UPHOLS
CALL' HG
LEAVER DRUGS
LEAVER SC<
XL' CLEANERS
OIETZ J
JERMAN REALTORS
'JERMAN OR INV CO
BOBS MOTEL
TRIPP 0
MILLSTREAM TRLR PK
KITCHENS G
HOLIDAY MOTEL
MIYAZAKI
HOLIDAY INN
WR1DE
THE SPOT
WILLIE C
HOG
LOG
00012
00009
00012
00009
00011
ooooa
HIS
LOC
00011
9 "
C L.
L T E
A Y V
S P E
S E L
S
5 2 1
9
713
S
M C
ARUM
T E S A
L E E P
N
1106
697
697
106
1706
00012 00010
00009
00013
00009
00013
00008
00012
00009
OOOJ2
00010
00016
00009
9
00012
9
00012
9
00010
9"
00012
9
00010
9
5 2 1
621'
6 2 1
6 2 1
622
521
_00012 00013.
00007
00015
00009
00015
00010
00016
00009
00200
00007
00014
-JDQQQ6
00200
000.11
00014
ooooa
9
00013
9
00014-
9
00012
9
00012
9"
00014
9
00013
9
5 2 1
5 2 1
513
4 1 3
9 3 1
421
422
6 2 1
1106
1106
1106
1106
1106
1106
1106
1106
1106
1106
2727
2106
1137
1106
-------
APPENDIX 'D ( T.ONT
UTAH mwpRFHFNSIVF. RY CITYt STRFFT Ann. PAf,F
SALT LAKE CITY* UT
LOC.NO. . ADDRESS
mii_
42402 03419 S STATE ST
& ntr STUCCO To 19
42399 0356ft 5 STATE ST
A 333 BRICK FRPLACE TO 20
^42397 03620 S STATE ST
A .lift
42400 0365ft 5 STATE ST
A 348 BRICK TO 19
42401 03750 S STATE ST
A 358 BRICK TO 17
42470 03897 ,S STATE ST
A 250
42424 00150 W STRATFORD AVE
& 24C BRICK TO 17
42425' 00164 W STRATFORD AVE
a 25C T SW CORN LOT - SHINE 40
42388 01186 TOPAZ DR
A 22B UNEXPLAINED
-42387 01304 VALENTINE ST
A 218 NO SUCH ADD
42406 02465 S W TEMPLE
A 6C UNEXPLAINED
42431 0251L S W TEMPLE
A 31C BRICK TO 20
-42423 02550 S W TEMPLE
A 23C BRICK TO 19
42407 02650 S W TEMPLE
A 07C UNEXPLAINED
42403 02975 S W TEMPLE
A 03r T IN OR N OF RLDG RRK 18
42427 03135 S H TEMPLE
A 27C HOG BUSHES S SD HSE
42538 01527 E ZENITH ST
A G18 ORE INSIDE * OUT TO 3000*
42383 01000 W 100 N ST
A 17B UNEXPLAINED
42384 01000 W 100 N ST
A 18B BRICK TO 21
01/09/73
OCCUPANT
OWNFR
PEDERSEN INTERIORS
PEDERSEN R
NIGHT LIFF
CARROLE M
VALLEY BANK BUILD
DUCE SPORT GOODS
MALOUF G
ALBERTSONS
PAPONICHLOS
BOBS V CLUB
BRUNO J
RIDER PLASTICS
RIDER PLASTICS
VACANT LOT
UNKNOWN
STATES L: D
STATES L D
MARSH * SON
MARSH RW
LE VOYS
SORENSON J
JUDKINS CO
JUDKINS R
HEUSSER BALANCES
RUEFENACHT W
HORTHINGTON
PRICE J
DAY T
KINGSTON JB
RAY OA
RAY OA
STATE FAIR BLDG 11
STATE OF UTAH
STAT FAIR COLISEUM
STATE OF UTAH
HOG
LOG
00010
00006
HIG
LOG
00015
9'
r
L
4
S
5
5
T
Y
P
F
2
00013 00014
00008
QQ013
00009
00012
00006
00016
00011
00035
00012
00014'
00009
00015
00008
00013
00009
00415
00008
00011
00007
00060
00011
00018
00010
00015
-------
APPENDIX D (CCLNT )
UT«H COMPREHENSIVE BY CITY* STREET ADD* PAGE
SALT LAKE ClTY» UT
LOC.NO. ADDRESS
COMMENTS
42460 00702 E 100 S ST
A 14D BRICK TO 17
42382 00930 W 100 S ST
A 168 UNEXPLAINED
42529 02742 S 1000 E sT
A G8 BRICK WALLS TO 17
42345 03341 S 1000 W ST
A 52A*54A POSS WNDBLN T*SHNE 25
42533 03100 S 1100 E ST
A 612*14- CLAY*BRICK TO 25"
42532 03194 S 1100 E ST
A Gil STUCCO WALLS TO 20
42379 00175 S 1100 W ST
A 138 BRK TO 17
42367 00345 S 1335 W ST
A 88A BRICK TO 19
42541 03175 S 1390 E ST
A G21 BRICK WALLS TO 22
42447 S 200 E ST
A 010
42544 02750 5 2000 E ST
A HI-NO ?730 ADD-BRTCK HALL 20
42511 0313n S 2050 W ST
A Fl T FR YD*S SIDE
42341 00850 W 2100 S ST
A 4BA UNEXPLAINED
42342 00964 W 2100 S ST
A 49A UNEXPLAINED
A2521 03695 S 2175 E ST
A F38
42421 00055 E 2400. S ST
A 21C UNEXPLAINED
42540 01567 E 2585 S ST
A G20 RRTCK WALLS TO 16
42546 02980 S ?700 E ST
A H3 T CARPORT SLAB ONLY
42522 03435 S 2700 E S'f
A Gl OLD FLOUR MILL SITE RCK 20
01/09/73
OCCUPANT
OWNER
HALF PRICE MARKET
TAFT W
METAL ART CO
TELFORD RW
STORAGE •* GApAGE:
BIESINGER FG
E OF 999 3300 ST
UNKNOWN
INTERSTATE BRICK
MTN FUEL' CO
UNKNOWN
VACANT
LOS CHURCH
WILFORD WARD 1*2
LDS CHURCH
VACANT HOUSE
UNKNOWN
HILLS FF'
HILLS EE<
AMERICAN SERVICE
LOWELL BM
LEAK M
LEAK M
HOWE RENTALS
HOWE H
SAVRITE A*G MARKET
ALLRFD HR
TAGGART NM B
TAGGART NM B
VACANT
HOG
LOG
00012
00009
00015
00009
00014
oooio
00020
00015
00017
00012
_00016
00012
00013
00009
00011
00009
00015.
00011
00014
00010
_5Q08Q
00010
00015
-COQ.Q8
00015
00009
00016
00008
00012
_00008_
00080
00010
00012
00008
C L
LIE
A Y V
HIG S P E
LOG S E L
00010
9 521
00012
9 621
00015
9 522
0
00014
9 512
232
522
821
8 1 3
131
00014
9 131
00011
9" 622
00016
0 121
1 1 2
00013
9 521
00012
9 521
00016
3 112
9
S
M C
_A_R_U M
T £ S A
L E E P
H
1106
1106
1106
1 4 6
1106
1705
1705
1705
1705
695
1705
1137
1106.
1106
1 4 9 4_
1106
1 1 0 6_
1137
706
108
-------
APPENDIX D (C9NT )
LJJAH C<">M?;=>FHfrwc;IVF' PY CITY* STRF
SALT LAKE CITY, UT
.LOC. NO. . ADDRESS
42435. 00014 E 2700 S ST
A 35C
42463 00304 E 2700 S ST
A 180 » 37C BRICK TO 21
42451 00501 E 2700 S ST
A OSD RUS r.l 09FD UMFXPI ATMFp
4244-1 00545 E 2700 S ST
A 42C BRICK FIREPLACE TO 17
42440 00547 E 2700 S ST
A 41C BRICK TO 17
42439 00555 E 2700 S ST
A 40C BRICK TO '18
42438 00563 E 2700 S ST
A 39C BRICK TO 18
42464 00902 E 2700 S ST
A 19D+17G BRICK TO 18
42537 00902 E 2700 S ST
A 19D*17G DUPLICATE LOC "42464
42434 00031 W 2700 S ST
A 34C
42472 036B7 S 2740 V ST
A 2E T ENTIRE PROP
42471 03690 S 2740 W ST
A DIE
42545 02206 "E 2935 S ST
A H2 RRICK TO 18
42449 02400 S 300 E ST
A 03D UNEXPLAINED
42296 02545 S 300 W ST
NO MOB-APO GUFSS-T FNTIRE LOT
42396 03365 S 300 W ST
A 308 T PARKING AREA
42395 03451 S 300 W ST
A 293 UNEXPLAINED
42462 00137 E 3185 S ST
A 160 T UNDER S SEC OF TRLR HSE
42548 00047 E 3300 S ST
A H5 BRICK WALLS TO 20
ET ADD. PAGE
01/09/73
OCCUPANT
OWNER
LDS CHURCH
LOS CHURCH SLC
NIBLEY PARK MARKET
EHLERT J
EHLERT J
BULLOCK
ARCHULETA M
FELLOWS WE
FELLOWS WE
NYGRENS MARKET
NYGREN P
NYGRErJS MARKET-DUP
NYGREN-DUP 42464
CARTER JA
PAIZ E "
ADAMSON NW
ADAMSON NW
GARDEN HEIGHTS KRO
LDS CHURCH
HHY j 80 UNDERPASS
CITY OF SALT L<\KE
VACANT LOT
US GOVT
BOYERS FOOD PROD
YOUNGS TRUCK LINES
ATCO.. INVESTMENT
VACANT HSE TRLR
UNKNOWN
LDS CHURCH
LDS CHURCH
HOG
LOG
50014
00008
00015
JWOQ7_
50013
00010
00015
50009
00014
00006
00014
00015
00010
00300
00014
00012
ooooa
00016
00010
osooo
gjijoo
00300
00008
00012
OQ_007
ooioo
00012
00016
00010
HIG
LOC
00014
6
00014
6
00010
6"
00012
9
00050
6
00012
9
00015
9
00013
6
00015
9
L
A
S
S
8
5
1
1
1
1
5
1
1
8
9
0
5
5
1
6
L S
T E M C
Y V A R
PETE
F L L E
Ski
N
6
7
2117
121.1
1211
1217
1211
1211
6
1211
2214
1211
1
1
2111
1221
3127
1211
S
F
9
0
0
0
0
0
0
0
9
3
9
0
0
2
3
0
3
0
M
A
P
7
6
5
6
6
5
6
6
7
1
4
6
6
7
7
6
.7
6
109
-------
APPENDIX D. (CONT )
UTAH COMPREHENSIVE BY CITY». STREET ADO, PAGE
SALT LAKE CITY? UT
LOG. NO, ADDRESS
COMMENTS
42547 00067 E 3300 S ST
A H4 BRICK WALLS TQ 13
42552 00?20 E 3300 S ST
A H9 BRICK WALLS TO 18
42553 00704 E 3300 5 ST
A H10 SRICK TO IB-INSIDE REFUSE
42517 01103 E 3300 S ST
A F34 BRICK WALLS TO 17
-42535 01105 E 3300 S ST
A G15 BLOCK HALLS TO 15
42514 01444 E 3300 S ST
A F31 T ASPHALT PARKING N SIDE
42542 01565 E 3300 S ST
A G22 BRICK WALLS TO 22
42515 02405 E 3300 S ST
A F32 ORE FRNT YD BY STEPS 300
42516 03290 E 3300 S ST
A F33 BRICK (•/ALLS TO 16
42295 H 3300 S ST
NO HOB-DUNCAN REQUEST
42549 00010 W 33QO S ST
A H6 BRICK WALLS TO 16
42551 00155.5 W 3300 S ST
A H8 T CENTER-NORTH SIDE
42408 001B4 W 3300 S ST
A 8C*H7-HIG IN DISPLAY' AREA
42550 001C4 W 3300 S ST
A 8C*H7-DUPLICATE OF LOC 42408
42359 00315 W 3300 S ST
A 73A T IN rmVF F SIDF HSF
42360 0049ft W mnn S ST
A 74A-POS KNDBLWN T/SHINE~TO 30
-42358 00499 W 3300 S ST
A 72A T HMD RIV.'NUSHJNF TD~30
42308 00535 w 3300 S ST
A 12A+70A*71A WND BLWN/SHlNE 45
42357 00651 W 3300 S ST
A 6BA T. W'NO RLWN ENTIRE PROP
01/09/73
OCCUPANT
OWNER
MILLERS HONEY
MILLER D
AMOS RENTS
TOWERS JM
SCOTT J
SCOTT J
J*K MARKET
KUMARELAS V
BARBARA JENSEN INT
BARBARA JENSEN INT
APOSHIAN ENGINEERS
APOSHIAN GZ
POND C
POND C
IVINS LR
IVINS LR
DON QUIXOTE RESTRN
VITRO MILL AREA
SEVERAL
OLSONS SPORTS, CAR
ANDERSON El
VACANT LOT
GREAT BASIN SUPPLY
KOHLER PLUMB SUPP
ADAMS A
KOHLER PLUMB - DUP
ADAMS A-DUP 42408
LOSSER R
LOSSER R
VACANT LOT
UNKNOWN
WESTERN AUTO WRECK__
PETERSON C D
KENNEDY K
THUET J
HOG
LOG
00015
oooli
00012
00009
00015
00010
HIG
LOC
00010
9
00015
9
C L
L T E
A Y V
S P E
S EL_L_
S
522
631
1 1 2
s.
H C
A F! U
T E
i r
N"
1 I
1 1
1 7
S
i
0
0
0
H
A
_P_
6
6
4
00014 00012
00009
00010
OJLOJL8
_9Q040_
00010
00013.
00009
00014
00010
00012
00009
3000*-
00020
00011
__MQ_08
00040
00010
01000
00020
00110
00009
00030
00020
00030
00014
00040
00025
00090
00040
9
00012
9
00012
9
00014
6 "
00014
9
00190
8
00013
2
00019
9 '
00018
0
6 1 2
5 2 1
622
I
1 1 ?.
6 1 2
9
521
0
5 2 1
1 2 1
0
0
5 2 I
1 2 1
1 I
1 I
1 1
7
I 1
1 7
1
1 }
1
1 1
? 1
1
1
1 1
1 I
0
0
3
0
0
Q
3
0
2
3
3
4
?
4
3
6
6
7
5
6
6
1
6
7
1
7
6
7
6
6
110
-------
APPENDIX D (CONT )
UTAH fOXPPFH^N^TVF BY PTTYt STRF
SALT LftKE CITY» UT
LOG. NO. . ADDRESS
rnMMFNTS
42356 00661 W 3300 S ST
A 67A
42355 00671 W 3300 S ST
A 66A T WND BLHN ENTIRE PROP
42307 00681 W 3300 S ST
A 11A»65A T WNOBLWN FNTIRE YD
4?3S4 00825 W 3300 S ST
A 64A T S SD OF ROAD * WND SLUM'
42353 .00837 W 3300 S ST
A 63A T UNO BIWN/SHTNE TO^llO
42352 OOB45 W 3300 S ST
A 62A T WNDBLN YAPD-HIG SHINE
42351 00855 W 3300 S ST
A 61A T ENTIRE YRD/SHINE TO 90
42350 00863 M 3300 S ST
A 60A T WNDBLWN YD + SHINE TO. 70
42349 00071 W 3300 S ST
A 59A t V!ND BLWN ENTIRE PROP
42323 00881 W 3300 S ST
A 29A+58A WNDBLWN T*SHINE TO 65
42348 00925 W 3300 S ST
A 57A*A56 WND BLV.'K'/SHJNE TO 55 _
42347 00949 W 3300 S ST
A 55A T KND BLWN SHINE TO 40
42346 00999 W 3300 S ST
A 53A SHINE TO 20
42344 01021 W 3300 S ST
A 51A T WND BLWN/SHINE TO 45
42473 02000 W 3500 S ST
A 03E T UNDER SV CRNR
42512 05975 W 3500 S ST
A F2 BRICK WALLS TO 18
42475 03895 S 3520 W ST
A 05E BRICK TO 20
42309 0056Q W 3740 S ST
A 13A T E .SIDE OF DRIVE
42523 E 3800 S ST
A G2 HOG GEOMETRY OF CONCRETE
ET ADQa P&GE
©1/09/73
OCCUPANT
OWNER
BLUHENTHAL BROS
VACANT HOUSE
UNKNOWN
MARTINEZ JG
HANSON RL
HANSON RL
WHITAKER EH
WHITAKER EH
BINGHAM RL
BRADSHAW GL
LAVADIE M
LAVADIE M
UNKNOWN
FREDRICKSON E
CRACROFT JW
CRACROFT JW
ARMONDS LOUNGE
PERRY A
E OF 1061 3300 C
MURRAY 1ST THRIFT
MURRAY 1ST THRIFT
WHITTIER ELE SCHL
GRANITE SCHL DIST
UNKNOWN
SANCHEZ FD
UNDERPASS 1-215
CITY OF SALT LAKE
HOG
LOG
_M090
00035
00110
00040
J0220
0003S
00100
_DQO_60_
00040
00080
00040
00070
00025
00060
00040
00065
00030
00050
00020
00030
00017
00019
00012
00030
00020
00050
00010
00015
00010
00016
00030
00010
00015
00008
HIG
— — — —
00040
I
00040
1
00025
0
00018
9
00013
6
00012
9
00014-
9
00014
6
C L
L T E
A Y V
S P E
S E L
S
I
5 2 1
\ I 2
0
131
1 3 1
1 3 1
1 3 1
1 3 1
I 3 1
1 2 1
1 1 2
S 2 I
0
.5 2 1
7 1 3
1 2 1
1 3 1
9
S
M C
ARUM
T E S A
t F F P
N
29 2
1735
1735
1 2 7
1745
1131
1131
1131
1136
1745
1745
1136
1106
1 4. 6
2117
1106
1706
i 7 2 7
1 0 6
111
-------
APPENDIX D (UONT
U1AH COMPREHENSIVE BY^ C
ITY. STREET ADD, PAGE
SALT LAKE CITY» UT
LOC.NO. ADDRESS
COMMENTS
42520
A F37
42392
A 268
42554
A Hll
42386
A 208
42377
A 118
E 3900
HOG GEOMETRY OF
00100 E 3900
S ST
CONCRETE,
S
ST
01/09/73
OCCUPANT
OWNER "
1-15 UNDERPASS
CITY OF SALT LAKE
HOG
LOG
00016
00012
UNABLE TO LOCATE
00922 5
ROCKS IN FR
00740 W
BRICK TO 22
00699 W
BRICK PILE
42370 01036 W
A 03B
42371
A 048
42474
A 04E
42450
A 04D
42314
A 19A
01040 W
BRICK TO 21
W
02400 S
UNEXPLAINED
03443 S
UNEXPLAINED
400
YD
400
E
TO
N
400 S
TO 18
400
400
ADD
4000
5uO
500
42313 03499 S 500
A 17A«1BA HOG SHIN^
42312
A 16A
42311
A 15A
42310
A 14A
..03513 S
SHINE FR A
03585 S
T FLCOR SLA
03595 S.
500
ISA
500
-fc-*.
500
S
ST
400
ST
ST
ST
UNKNOWN
28TH WARD CHAPEL'
KETCHUM HARDWARE
KETCHUM CH
S ST
GUSS
S
E
W
W
W
TO
W
Y_A
W
HOG IN SWAMP ADD
42376 00412 S
A 10B NO SUCH ADO
4P45?
...0034.2 S
600
700
W
C
ST
ST
ST
ST
25
ST
RD
ST
GUESS
ST
ST
W OF 3266 WEST
UNKNOWN
HWY I 60 UNDERPASS
CITY OF SALT LAKE
CENTRAL; LANDSCAPE
FRENHER MC
LAMPER JL
LAMPER JL
BARKER J
BARKER
A*R MEATS
A*R MEATS
S OF 3585 S 500 W
UNKNOWN
A 6D UNEXPLAINED
42453
A 070
42454-
A 08D
42459
A 13D
00350 S
-U_NEXPJLA1KEQ
00440 S
UNEXPLAINED
00915 S
UNEXPLAINED
700
700
700
E
E
E
ST
ST
ST
STEVENS HENAGER C
STEVENS J
MID CITY PRO BLDG
CHRISTENSEN
00015
00007
00012
00009
00011
00009
00011
00009
00013
00009
00017
00009
00019
oooii
00016
00010
00100
00025
00016
00007
00015
00009
00015
00009
00013
00007
00014
00009
C L S
L T E M C
A Y V A R
HIG S P E T E
LOC S E L L E
9 I
0 6
13127
82217
00011
9 52111
6
82117
6
9 1
00013
9 52121
13127
00013
0 12121
00060
9 52111
0 1
6
31217
00015
6 71311
00012
6 61311
11317
U
S
E
0
9
0
0
0
9
0
9
0
0
0
0
3
0
9
9
0
0
9
A~
6
5
5
5
6
5
5
5
6
6
6
6
V
6
J!1
6'
6
6
112
-------
APPEN-DIX D (CONT )
VJAH rOMPPFHFNMVF RY CITYt STRfFT ADD. PAfiF
SALT LAKE ClTYi UT
LOC.NO. ADDRESS
r-OMMFNTS
42458 01399 S 700 E ST
A 120 RRICK TD 23
42455 01632 S 700 E ST
A 090 BRICK TO 19
42456 02226 S 700 E ST
A 100 T UMDFR W FHD OF SHOP
42457 f)?400 S 700 F ST
A 11D UNEXPLAINED-POSS GEOMETRY
42527 03225 S 700 E ST
A_G6 RRICK TO 18
42390 00755 W 700 N ST
A 248 BRICK TO' 19
42364 00939 S 700 W ST
A 85A BRICK TO 17
42363 01101 S 700 W ST
A 84A T ENTIRE SLAB *• PARKING
42362 01201 5 700 W ST
A 83A ORE IN EQUIP WASH 350
42306 03319 S 700 W ST
A IDA T WND BLKN ENTIRE PROP
42305 03327 S 700 W ST
A 09A T V;ND BLWN ENTIRE PROP
42304 03341 S 700 W ST
A 08A T WND BLWN ENTIRE PROP
42303 03349 S 700 W ST
A 7A*69A KNDBLNN T ENTIRE PROP
4j>?97 03354 S 700 H ST
A 1A HNDBLWN T ENTR LOT-ADD GUS.
42302 03363 S 700 W ST
A £A WNDBLWM T YD»TRACK IN SHOP
42298 03364 S 700 W ST
A 2A WINDBLOWN T *- SHINE TO 90
42301 03389 S 700 W ST
A 5A V.'NDBLWN T SM AREA BK 8LDG
42300 03415 S 700 W ST
A 04A S SD YRD POSS ORE HOG
42299 03422 S 700 W ST
A 03A HIG DUE TO 3RICK HOG SHIN
01/09/73
OCCUPANT
OWNER
WHITE ADVERTISING
HAWTHORNE SCHOOL
SLC SCH DIST
CONTINENTAL BEAUTY
LUND H
HOG
LOG
00015
00008
_04012
00009
00015
00008
HIG
LOC
00012
6
00120
7
C L
L T E
A Y V
S P E
S E L
S
6 1 3
713
7 1 2
S
M C
A R
T E
L £
N
1 1
I 7
1 1
_U_
S
0
0
1
H
A
P
6
6
1
HWY 1 80 UNDERPASS 00016
CITY OF SALT LAKE
LOS GRANT 2ND WARD
LDS CHURCH
LOS CHURCH 3 WARD
PACIFIC METALS
CASTLE
KOLDAIRE
WHILH1TE J
MACHINERY CENTER
PIERCE ESTATE
TURNER J.
GAYOILLE, CF
SOMMERS T
SOMMERS T
VACANT LOT
SOMMERS T
VACANT LOT
AMERICAN SMELTING
ENSIGN SHOE CO
ENSIGN SHOE CO
VACANT LAND
AMERICAN SMELTING
FIRE ENGINEERING
GILLETT H
WELDERS SUPPLY
POLLOCK H
AMER SMELT * REFIN
AMFR SKELT «• REFIN
00010
00014
OJOJ11
00011
00009
00012
00009
00050
00009
00014
00008
00090
00035
00110
00025
00050
00017
00050
00017
_09130_
00080
00110
00025
00090
00030
00035
OJU513
00018
00009
00080
00012
00014
9
00011
9 '
00150
9
00012
9
•00018
9
00012
9
00010
9
00012
9
00018
9
9
8 1 3
8 2. 2
5 2 1
5 2 1
5 2 I
1 3 1
1 3 1
1 3.1
0
0
5 2 1
0
522
5 2 1
5 2 1
1
1 1
1 7
1 1
1 1
1 1
1 7
2 7
1 1
1
1
1 1
1
1 1
2 1
1 1
0
0
0
0
3
0
3
3
3
2
4
^
4
^
0
0
6
6
6
6
1
6
5
5
6
6
7
7
7
7
6
7
113
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APPENDIX ,D (CONT )
HL COMPREHENSIVE BY CITY« STREET ADD.
SALT LAKE ClTYt UT
P_AGE _
01/09/73
C L S
L T E M C
a V v ARUM
LOC.NO. ADDRESS
COMMENTS
OCCUPANT
OWNER
HIG S P E T E S A
-PC SELL E_L_P_
S H
42528 02583 S 800 E ST
A G7 T LAWN«FLO'riER ED+UTIL RM
BRUNSWICK JL
BRUNSWICK JL
00500 00130
00014 9 2211131
.42366; 00615 W 800 5 ST
A 87A UNEXPLAINED
_PORTLAND_CEMENT_CO 0001_0
PORTLAND CEM CO UT 00007
_00 011
9 5221106
42476 01337 W 800 S ST
JL 6B ABANDONED SCH-B^ICK TO 19
EDISON SCHOOL
00013
OQQ08
7221705
S 900 E ST
A 23D BRICK TO 18
HOOLF LK
HAMMOND H
_0_M12 0001*1
00009 6
2121106
42467 01307 S 900 E ST
A 22D BRICK TO 17
ECONOMY ELECTRIC
00013 00011
00009 9 6211 1 0 5
S_?0_0 E ST
A 21D UNEXPLAINED
JSRANITE WELDING 00014 Q0010_
RALEIGH R 00008 9
6121106
-42465 02400 S 900 E ST
A 20D UMEXPLAIMED
HHY I 80 UNDERPASS 00013
CITY OF SALT LAKE 00009
.42469 03230 S__900 E ST_
A 24D VAC BUS BRK TO 22
JLQ013_
00009
1 0 6
5211706
42324 S 900 W ST
A 30A*37A OLD TAILINGS PILE
OLD TAILING POND I 3000*
VITRO CORP 02500
42331
S 900 H ST
QLO_JTA I LI NG_PONP_2._Q29 C 0_
A 45A WND BLWN/SHINE TO 400
UNKNOWN
00090
42339 S 900 >; ST
A 46A HOG S HINE + POSS WIN P BJ.K
260 FT S OF SML CK 00400
002QQ
S_900.
A 47A WND BLWN/SHiriE TO 300
s ~QOoTw"sf
W_T.PILE.3300 S ST _00200
VAC LAND UNKNOWN 00090
4237S 00201
JLJ £B_.
HWY I 80 UNDERPASS 00015
AJ1£___0_0 OJ JL
114
JLJLJL
A 38A
42332
• A 39A
42336
A 43A
42337
A 44A
4233*5
OLD TAILINGS POND 2.
s 900 w ST
WINDS! OWN TAILINGS*SHINE
WND BLWN/SHINE TO 110
S 900 W ST
WND BLWN /SHJNE TO 160
S 900 W ST
VITRO CORP
N OF TAIL POND 2
UNKNOWN
s OF GRD CNTL HHSE
UNKNOWN
MILL CREEK SOUTH
UNKNOWN
SKL CRK N TO MILL
01700
00120
00012
00090
00080
00110
00060
00300
9
0
0
0
1 2 7
1 2 7
1 4- 7
1 <4 7
147-
42375
A 098
42369
A 02R
00402 s 900 W ST
ROCK TO 20
00494 S 900 W ST
BRK TO 17 BUS CLOSED
VACANT 00014
00009
BOB » JOES MARKET 00012
00009
5
5
2 2
2 i
1
1
7
7
0
0
5
5
-------
APPENDIX D (CONT
UTAH CnMPPFHFN^TVF P.Y CTTYf STRFFT aHD. Pflf,F
SALT LAKE ClTYi UT
.LOG. NO. ADDRESS
POMMFNTS
43333 02550 S 900 W ST
A 40A UNEXPLAINED
42334 02560 S 900 W ST
A 41A
42335 02850 S 900 W ST
A 4?A T S Sr> OF PARKING LOT
42330 0319S S 900 V ST
A 36A T ENTIRE PROP-SHINE 1200
42339 03215 S 900 W ST
A 35A T ENTIRE PROP SHINE 550
42328 03237 .S 900 H ST
A 34A-T WIND8LWN/SHINE HOG
42327 03265 S 9QO W ST
A 33A T ENTIRE LOT-HOG SHINE
42326 03275 S 900 W ST
A 32A T POSS HND3LWN/SHINE HOG
42325-. 03235 S 900 W ST
A 31A POSS WINDBLOWN T * SHINE
42315 03302 S 900 W ST
A 20A T »;NL) BLWN ENTIRE YRD
42322 03331 S 900 W ST
A 28A T UNO OLN /SHINE TO 40
42321 03339 S 900 W ST
A 27A TU SLAB FLOOR+SHINE TO 30
42316 03340 S 900 W ST
A 21A T WND BLWN ENTIRE YRD
42317 03342 S 900 W ST
A 22A WINDBLOWN T ENTIRE PROP
42318 03344 S 900 W ST
A 23A«24A T WND BLWfj ENTIRE YRD
42320 03347 S 900 H ST
A 26A T WND BLN/ SHINE TO 27
42319 03432 S 900 W ST
A 25A N OF_JiSE_JN JUNK YRD DR*Y
01/09/73
OCCUPANT
OWNFR
NATIONAL AD CO
SCIENCE SECURITY
BROWN DIST CO
BROWN KC
GRAN CENTRAL' WAREH
PRICE J
WON DOOR CORP
WON DOOR CORP
WONDOOR CORP
V.'ONDOOR CORP
INVENTORY SALES
CROMAR G
VACANT LOT
UNKNOWN
SIERRA CORP
BARRET B
N OF 3300 S ST
UNKNOWN
KAY T
UNKNOWN
NIELSEN WI
NIELSEN WI
CORNELL S
CORNELL S
YATES R
UNKNOWN
BROWN L
UNKNOWN
COOK DL
HUDSON S
JOHNSON WE
JOHNSON WE
NORMAN N
NORMAN H
HOG
LOG
00015
00009
00060
_M012_
_Q25QO
00110
00550
_fi.0_100
00400
00090
00300
00120
00300
00120
00250
00090
00050
00020
00040
00012
00030
00012
00035
00020
Q0030
OOOEO
00025
_Q1Q_1?
00027
00017
00250
_J}Q014
HIG
LOC
00013
9
00012
9
_005Q3_
7
00350
9
00090
9
00065
9
00019
0
00060
1
00013
6"
00013
0
00011
0"
C L
S
L T E H C
_JL_t_JL A P
S P E
S E L
S
5 2 1
5
5 2 1
522
5 2 1
6 2 1
0
5 2 1
0
1 2 2
1 2 1
1 2 1
t 3 1
1 1 2
1 1 2
1 2 1
1 2 1
T £
L F
N
1 1
1 2
1 1
1 1
1 1
1 1
1
1 1
1
1 7
2 1
2 1
I 7
2 7
2 1
2 I
1 1
LL P
S
^E_
0
9
2
3
3
4
4
4
4
3
4
3
3
3
3
4
2
A
?
J,
2
7
1
1
1
7
1
7
5
6
1
5
5
6
6
7
115
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APPENDIX E
U.S. Environmental Protection Aqency's Informal
Guidance for Assessment of the Need for Remedial
Action Based on the Follow-up Gamma Survey Reports
for Communities which are Located Near Uranium Mills
We recommend that tailings be removed if at all feasible
and properly disposed of in a properly designated location,
such as a tailings pile or on land provided for this purpose.
Alternatives, such as ventilation and the use of sealants,
may also be utilized. Consideration should be given to any
potential adverse health impact of residual radiation level,
the cost of reducing the residual radiation level, and the
economic effect of these protective measures. Recommendations
of actions to be taken in the assessment of anomalies are as
follows:
1. Experience has shown that if tailings are located
more than 10 feet from an occupied structure, the uranium
tailings will not produce elevated radon levels inside the
structure. They should still be removed when it is conveni-
ent and at a minimal cost to the individual.
2. Ore or other radioactive sources should be properly
disposed of if they have no specific value to the owners.
3. "External gamma level" is defined as the net corrected
average ground floor gamma (AGFO) value for the occupied por-
tion of the structure.
4. If external gamma levels inside a structure are equal
to or greater than 20 MR/h above background, the indoor radon
concentration level may be presumed to equal or exceed 0.01 WL
above background. If this condition exists, consideration
should be given to further assessment to determine possible
need of remedial action.
5. If external gamma levels inside a structure are less
than 1 MR/h above background, it should be presumed that the
indoor radon daughter exposures would be below 0.01 WL above
background and no further assessment is required.
6. If external gamma levels inside a structure are
equal to or greater than 1 pR/h above background but less
than 20 yR/h above background, measurements should be made
to determine the indoor radon daughter level, the location of
tailings, and the need for and type of appropriate remedial
action to be taken if warranted.
116
-------
AlMMiNDIX I: (.CONT)
7. If tailings are found outside a structure, the
cleanup and removal of material should result in levels as
close to background as possible. In any event, the readings,
after cleanup, should not exceed 50 pR/h above background.
Legislation exists which authorizes a Federal contribu-
tion to a joint Federal/State remedial action program in the
area of Grand Junction, Colorado. However, there is no
legislative authority to provide funds for support of a remed-
ial action program in other areas.
117
-------
APPENDIX F
U.S. Environmental Protection Agency's
Recommendation for the Vitro Tailings Pile
in Salt Lake City, Utah (June 7, 1973)
Studies at various uranium mill tailings pile sites have
shown that the radon emanation from the tailings pile does
not present a significant radiation exposure to the surround-
ing community outside a radius of one-half mile from the site.
Workers on, or visitors to, the surface of the pile or adja-
cent to it would receive external gamma radiation exposure.
The radon concentrations present on the Vitro pile exceed the
current limits for population exposure; however, the short
half-life progeny of radon are not in equilibrium with the
parent radon. Thus, the observed working level (WL) expo-
sures in the air at the sites sampled is low, but significant
working level exposures can occur in a structure built over
or adjacent to the tailings material.
EPA does not recommend approval of the "race track"
proposal for the property known as the Vitro uranium mill
tailings pile for the following reasons:
1. At the present time, the State of Utah has no regu-
lations covering the use, non-use, stabilization, or other-
wise effecting the disposition or control of radioactive
mill tailings.
2. The current legal mechanisms by which the State of
Utah may place restrictions on the property title or to con-
trol the use of this property and structures built on it are
not specifically intended to cover such complex phenomena
as ionizing radiation. This is of concern because of the
possibility of future uses other than those originally
approved which could result in unnecessary radiation expo-
sure to workers or visitors at the tailings pile site.
3. Persons working at or attending given racing events
would receive an unnecessary increment of radiation exposure.
This unnecessary exposure, however low, would also be received
unknowingly. According to a recent report of the National
Academy of Sciences, "No exposure to ionizing radiation should
be permitted without the expectation of a commensurate benefit."
118
-------
M'Pl-NDIX 1; (CONT)
Because studies have shown that an unstabilized and
uncontrolled uranium mill tailings pile can create potential
public health problems, EPA recommends that:
1. The State of Utah establish the necessary regula-
tions to effect the disposition and control of radioactive
mill tailings. These should not rule out the possibility of
some acceptable use for any given closed mill site.
2. The Vitro uranium mill tailings pile should be properly
stabilized to prevent migration of the tailings into the envi-
ronment and prevent public ingress to the area. The pile
should be graded, covered, properly fenced, and controlled
to prevent any migration of the tailings into the surrounding
environs by wind or water erosion, or removal of tailings
for unauthorized purposes.
3. The State of Utah consider possible remedial actions
for the businesses located on the west side of the Vitro
uranium mill tailings pile along South 900 West.
119
-------
REFERENCES
1. Augustine, P.. J., Inventory of Active Uranium Hills and
Tailings Piles at Former Uranium Mill's"^U. S .Department of
Health, Education,and Welfare, U.S. Public Health Service,
Aucrust 1970.
2. Evaluation of Radon-222 Near Uranium Tailings Piles,
U.S. Department of Health,Education,and Welfare,U.S. Public
Health Service, DER 69-1, March 1969.
3. Schiager, Keith J., The Evaluation of Radon Progeny Expo-
sures in Buildings: A Report on Equipment and Techniques,
Colorado State University,Department of Radiology and Radia-
tion Biology, Fort Collins, Colorado, March 15, 1971.
4. Thomas, Jess W., "Modification of the Tsivoglou Method
for Radon Daughters in Air," Health Physics, 19:691, November
1970.
5. 10 CFR Part 20, U.S. Atomic Energy Commission, Standards
for Protection Against Radiation.
6. 10 CFR Part 12, U.S. Atomic Energy Commission, Grand Junction
Remedial Action Criteria, September 28, 1972.
7. Tanner, Allan B., "Radon Migration in the Ground: A Review,"
The Natural Radiation Environment, University of Chicago Press,
Chicago, Illinois, 1964, pp. 161-190.
8. Beck, Clifford K., Director, Office of Government Liaison
Regulation, U.S. Atomic Energy Commission, Letter to Dr. W. D.
Rowe, Deputy Assistant Administrator for Radiation Programs,
U.S. Environmental Protection Agency, October 25, 1972.
120
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TECHNICAL REPORT DATA
(Please read Instructions on the reverse before completing]
. REPORT NO.
EPA-520/6-74-006
3. RECIPIENT'S ACCESSIOf*NO.
4. TITLE AND SUBTITLE
Environmental Surveys of the Uranium Mill Tailings
Pile and Surrounding Areas, Salt Lake City, Utah
5. REPORT DATE
August 1974; Issuing Date
6. PERFORMING ORGANIZATION CODE
. AUTHOR(S)
David L. Duncan and Gregory G. Eadie
8. PERFORMING ORGANIZATION REPORT NO.
9. PERFORMING ORGANIZATION NAME AND ADDRESS
10. PROGRAM ELEMENT NO.
11. CONTRACT/GRANT NO.
12. SPONSORING AGENCY NAME AND ADDRESS
Environmental Protection Agency
National Environmental Research Center
Las Vegas, Nevada 89!14
13. TYPE OF REPORT AND PERIOD COVERED
Fina I
14. SPONSORING AGENCY CODE
15. SUPPLEMENTARY NOTES
16. ABSTRACT
Environmental surveys were conducted for the Utah State Division of Health's Occu-
pational and Radiological Health Section at the former Vitro Corporation uranium
m'I I and the Salt Lake City, Utah area. The results of the surveys indicated that:
the external radiation levels on the tailings area exceed recommended exposure limits
for individuals in the general population; ambient levels of radon over the pile and
In structures built immediately adjacent to the tailings pile are above the currently
recommended concentration for the general population; the working level exposure
In the adjacent buildings exceed existing recommendations; tailings material has been
removed from the site and used around dwellings and businesses; and tailings material
has become windborne and deposited against dwellings and structures in the vicinity.
For general publ-ic areas (at distances greater than one-half mile from the tailings
pile) the measured radon levels for the pile were not distinguishable from natural
background levels and were found to be within current guides.
17.
KEY WORDS AND DOCUMENT ANALYSIS
DESCRIPTORS
b.IDENTIFIERS/OPEN ENDED TERMS
c. COSATI Field/Group
airborne radioactivity, mill tailings,
radiation exposure, radon, Salt Lake City,
uran i urn
18. DISTRIBUTION STATEMENT
Re lease to pub I ic
19. SECURITY CLASS (This Report)
Unclassi f ied
21. NO. OF PAGES
20. SECURITY CLASS {This page)
UncIassi f ied
22. PRICE
EPA Form 2220-1 (9-73)
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