IUM-226, URANIUM, AND OTHER RADIOLOGICAL
DATA COLLECTS} FROM WATER QUAUTY
SURVEILLANCE STATIONS LOCATED IN THE
COLORADO RIVER BASIN OF COLORADO, UTAH,
NEW MEXICO, AND ARIZONA -
.JANUARY, 1961 THROUGH JUNE, 1972
TECHNICAL INVESTIGATIONS BRANCH
AND SURVEILLANCE BRANCH
SURVFiU-ANCE AND ANALYSIS DIVISION
iUS. rSONMENTAL PROTECTION AGENCY
REGION VIM
.ULY, 1973
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8SA/TIB-24
RADIUM-226, URANIUM AND OTHER RADIOLOGICAL DATA
FROM WATER QUALITY SURVEILLANCE STATIONS LOCATED
IN THE COLORADO RIVER BASIN OF COLORADO, UTAH,
NEW MEXICO AND ARIZONA -- JANUARY, 1961 THROUGH
JUNE, 1972
A COMPREHENSIVE RELEASE OF DATA FROM THE RMN
{RADIUM MONITORING NETWORK) SYSTEM
TECHNICAL INVESTIGATION BRANCH AND SURVEILLANCE BRANCH
SURVEILLANCE AND ANALYSIS DIVISION
U. S. ENVIRONMENTAL PROTECTION AGENCY
REGION VIII
1860 Lincoln Street
Denver, Colorado 80203
July, 1973
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ABSTRACT
The RMN (“Radiological 1 ’ or “Radium Monitoring Network”)
System was established in 1961 at the direction of the “Conference
on the Matter of Interstate Pollution of the Colorado River and
its Tributaries” and has continued to produce measurements of
radium-226, total uranium, and other surface water parameters
affected by the occurrence, extraction, and refining of uranium
ore in the Colorado River Basin. This report presents all of the
available data supplied by the RMN System to date. The report
also examines certain of these data in terms of their long- and
short-term trends. In excess of 3000 measurements of radium-226
and uranium in the dissolved state are presented as are many
measurements of other radioactivity parameters.
The report concentrates on total uranium and radium-226 data
for surface waters and compares the mean “background” concentration
of 0.08 pci Ra226/l and 2.1 pg UtOt/1 with concentrations downstream
of uranium mills and uranium tailings piles which have been as
high as 26 pci Ra226/l and 260 g Utot/l. Due in part to a decrease
in the number of uranium mills and in part to an improvement in
the caretaking of uranium tailings piles, concentrations of radium-
226 and uranium total have generally decreased throughout the Basin
with the notable exceptions being within the Dolores-San Miguel
Rivers System.
Statistical analysis of radium—226 concentrations in the
Dolores-San Miguel Rivers System clearly show the water quality
degradation caused by uranium extraction activities. This
straight forward statistical analysis also serves a basis for
evaluating the radium content of other river systems.
The RMN sampling and analysis system has operated for about
ten years and despite recent reductions in stations, sampling
frequencies, and radioassay capability, continues to provide the
essential element of water quality analyses-long-term measurements
of ambient and “contaminated” conditions.
1
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TABLE OF CONTENTS
Page
I. Abstract . I
II. Introduction 1
III. The Monitoring Network . 2
IV. Methods of Radiochemical Analysis for Radium
and Uranium 14
V. Results of Radioassay At Long-Term Network
Stations 15
A. Background Concentrations of Radium and
Uranium. . . . . . . . . . . . . . . . . . . . . 15
B. Radium and Uranium Concentrations Near
Uranium Mill Sites 15
C. Thorium, Lead-210, and Polonium-210 Data
Collected Near Uranium Mill Sites 19
VI. Graphic Representation of Radium-226 Concentrations
(Dissolved) and Flow at RMN Stations 39
VII. Sumary and Conclusions 69
VIII. Recommendations 71
IX. Appendix . A—i
11
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LIST OF FIGURES
Number Page
1. Location of Radiological Monitoring Network (RMN)
Stations and Uranium Tailings Piles - Colorado, Utah,
New Mexico, and Arizona In Rear Pocket
1A. Summary Map of RMN Stations 9
lB. Sumary Map of Uranium Mills 10
2. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-1 (Colorado River at Silt, Colorado)
Nov 61-May 72 41
3. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-4 (Colorado River Upstream of
De Beque, Colorado) Nov 61-Jun 72 42
4. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-5 (Gunnison River at Grand Junction,
Colorado) Apr 61—May 72 43
5. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-6 (Colorado River Near Fruita,
Colorado) Apr 61-May 72 44
6. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-9 (Colorado River North of Moab,
Utah) Dec 61-Jun 72 45
7. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-1O (Colorado River Near Moab,
Utah) Dec 61-Jun 72 46
8. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN—11 (Animas River at Durango,
Colorado) Jul 61-Jul 72 47
9. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-12 (Animas River Near Cedar Hill,
New Mexico) Jan 61-Aug 71 48
10. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-13 (San Juan River Upstream of
Farmington, New Mexico) Jul 62-Apr 64 49
111
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Number Page
11. Radium-226 Concentrations (Dissolved) and Average Monthly 50
Flows for Station RMN-14 (San Juan River Near Fruitland,
New Mexico) Aug 62-Sep 69
12. Radium—226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-14S (San Juan River Downstream of
Shiprock, New Mexico) Jul 62—Jul 71 51
13. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN—15 (San Juan River Upstream of
Mexican Hat, Utah) Dec 61-Apr 72 52
14. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-16 (San Juan River Downstream of
Mexican Hat, Utah) Dec 61-Oct 70 53
15. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN—17 (San Miguel River at Naturita,
Colorado) Oct 61-Jul 72 54
16. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-18 (San Miguel River Upstream of
Uravan, Colorado) Oct 61-Jun 72 55
17. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-20 (San Miguel River Downstream of
Uravan, Colorado) Oct 61-Jun 72 56
18. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-21 (Dolores River at Bedrock,
Colorado) Oct 61—Jun 72 57
19. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-22 (Tomichi Creek Near Gunnison,
Colorado) Dec 61-Jun 62 58
20. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-24 (Gunnison River Upstream of
Gunnison, Colorado) Dec 61-Jun 65 59
21. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-25 (Gunnison River Downstream of
Gunnison, Colorado) Dec 61-Jun 65 60
22. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-26 (Dolores River at Gateway,
Colorado) Oct 61-Jul 72 61
iv
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Number Page
23. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-28 (YAMPA River Downstream of
Maybell, Colorado) Oct 61-Jun 72 62
24. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-29 (Green River Downstream of
Green River, Utah) Jul 62-Oct 64 63
25. Radium—226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-30 (Colorado River at Northerly
US-Mexico Boundary) Jul 62-Apr 72 64
26. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-31 (Colorado River at Page,
Arizona) May 63—Jun 72 65
27. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-32 (Colorado River at Hoover Dam
Near Boulder City, Nevada) Mar 63-Apr 72 66
28. Radium-226 Concentrations (Dissolved) and Average Monthly
Flows for Station RMN-33 (Colorado River at MWD Intake
Near Parker Dam, California) Jan 63-Oct 68 67
29. Comparison of Distributions of Radium-226 Concentrations
(Dissolved) at Five RMN Stations Located in the Dolores
River-San Miguel River System, Western Colorado
Oct 61-Jun 72 68
LIST OF TABLES
1. Assignments Relating to the Radiological Monitoring
Network Made at the Various Sessions of the Conference
on the Matter of Pollution in the Colorado River and
Its Tributaries 3
2. Colorado River Basin Uranium Mills and RMN Stations 6
3. Uranium-Radium Family, MPCW Valves 12
4. Mean Annual Concentration of Radium-226 at Surface
Water Monitoring Network Stations 16
5. Mean Annual Concentration of Uranium (Total) at Surface
Water Monitoring Network Stations 17
V
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Number Page
6A. Average Concentrations of “Special” Radioisotopes
Measured at RMN Stations 20
6B. Gross Alpha, Gross Beta, Thorium Alpha, Lead-210,
Strontium-90, and Polonium-210 In Colorado River
Basin Surface Waters 22
vi
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INTRODUCTION
This is a summary transmittal of radiological data collected
through June, 1972 from the Radium Monitoring Network (“RMN”).
The Network is designed to collect radium-226 and uranium (total)
data from selected surface waters of the Colorado River Basin,
especially in the areas of uranium deposits and uranium extraction.
The Network was instituted under the U.S. Public Health Service
and was maintained by the Colorado River-Bonneville Basins Office
of the Federal Water Quality Administration (also the Federal
Water Pollution Control Administration) in the Department of the
Interior. Responsibilities for the Network were assumed by the
U.S. Environmental Protection Agency in December, 1970. The majority
0 f the RMN (Colorado and Utah) is located within Region VIII of EPA
(Colorado, Montana, North Dakota, South Dakota, Wyoming, and Utah)
and this summary report has been prepared by the Region VIII office.
The purpose of this report is to both supplement and summarize
radiological data presented in the sixteen previous releases 1 of
RMN data issued between October, 1962 and January, 1970. Selected
summaries of the data were also published in Radiological Health
Data and Reports in November 1964, November 1965, May 1968, and
December 1968.
This report is intended to provide interested parties with a
convenient summary of previously reported water quality data and to
bring the data releases up to date through June, 1972. The report
further describes the current (July, 1973) RMN system though no
data from the past year’s sampling are provided. Since agency names
and interests may have changed since the last data release, this
report is also a convenient vehicle to introduce the Radium Monitoring
Network to the unitiated.
1. Radium Monitoring Network Data Release #1 - Oct 62; #2 - Jan 63;
#3 - Jul 63; #4 - Jan 64; #5 - Jul 64; #6 - Jan 65; #7 - Jul 65;
#8 - Jan 66; #9 - Jul 66; #10 — Jan 67; #11 - Jul 67; #12 - Jan 68;
#13 — Jul 68; #14 - Jan 69; #15 - Jul 69; #16 — Jan 70
1
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THE MONITORtNG NETWORK
The RMN system is variously termed the Radium Monitoring
Network and the Radiological Monitoring Network. Since the system
monitors more than radium, the latter terminology is now preferred.
The RMN is a surface water quality surveillance system consisting
currently (July, 1973) of fifteen sampling stations located
throughout the Colorado River Basin. The RMN system was established
in response to recommendations of the “Conference on the matter
of Interstate Pollution of the Colorado River and its Tributaries”
to measure radium-226 and other radioactive elements associated with
uranium mill wastes, both liquid and solid. The conference was
called under the provisions of the Federal Water Pollution Control
Act as amended in 1956. The specific recommendations or assignments
made regarding a radiological monitoring network were those listed
in Table 1. This program for identifying the impact of uranium extraction
on the Basin included the water quality stations herein described,
sediment analysis, irrigated crop studies, tailings pile stabilization,
evaluation of wind—blown tailings, and other factors. This report
is limited to presenting the result of radioassay of surface water
samples.
Investigations of radiological contaminants associated with
uranium mills in the Colorado River Basin began in October of 1950
and proceeded through 1960 on a case—by-case basis. The results
of these investigations called attention to the fact that aquatic
biota collected from locations downstream of certain uranium mills
contained radium in concentrations two orders of magnitude greater
than that measured in samples collected upstream of the same mills.
More specifically, radium—226 concentrations in algae downstream
of Durango, Colorado and the tailings pile in Vancorum, Colorado
were 660 and 560 picocuries 2 per gram (dry, ashed) respectively
while upstream samples were 6 and 5 pci/gm. More intensive investigations
near the uranium mill at Durango in 1958 and 1959 showed radioactive
contaminants in downstream water supplies and in irrigated crops;
contaminants which could be traced to the mill effluents. In excess of
eighty percent of the increase was shown to be caused by the liquid
discharge from the mill. However, a significant portion of the
radium content of surface waters in the Colorado River Basin continues
to be derived from tailings material (seepage through and erosion
therefrom).
2. picocurie = 10-12 curies.
2
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TABLE 1
ASSIGNMENTS RELATING TO THE RADIOLOGICAL MONITORING
NETWORK MADE fiT THE VARIOUS SESSIONS OF THE CONFERENCE
ON THE MATTER OF POLLUTION OF THE COLORADO RIVER
AND ITS TRIBUTARIES
1st Session (13 Jan 601
- “That such investigations and study should cover (g)
pollution caused by radioactive wastes.”
- “That such study should include the determination of specific
pollutants and their concentration and include radioactive,
studies...”
2nd Session (11 May 61t
- “1. Further general reduction in radioactive pollution...”
- “2. Specific reduction in radioactive contamination of [ certain]
waters...”
- “3. Continuing monitoring of the radioactive content of river
sediments...”
- “5. provisions fora safety factor to prevent accidental spills
from uranium mills through the following steps:
.c. Development and initiation of an adequate alerting
system to provide irmiediate notice to State and Federal
agencies of accidental spills.”
- Report on ... “3. Extent of hazards from radioactive
contamination of crops in the upper basin attributable to radioactive
contamination of irrigation waters,...”
- Report on ... “4. Extent of hazards from radioactive contamination
of the dry washes at Maybell, Colorado, and Mexican Hat, Utah, and
of South Creek, near Monticello, Utah,...”
- Report on ... “6. Proposed methods for evaluating long-range
effects of radioactive content of basin deposits.”
- Report on ... “13. Operational status of radioactivity water
monitoring network.”
3rd Session (g-1O May 62 )
- “4. Conduct limited investigations into radium uptake by stream
biota including fish.”
- “7. Conduct limited sampling of uranium mill effluents and
and environmental media to ascertain levels of lead-2l0 in view
of its possible importance as a water contaminant..
- “3. Complete development of an alerting system for accidental spills
from uranium mills..
3
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TABLE 1 (Cont.)
- “4. Investigate the Monticello, Utah area/or hazards from
radioactive contamination.”
- “5. Investigate further the radiological and toxic chemical
conditions of waters at Uravan, Colorado.”
— “6. Complete the radium monitoring network and continue
radium monitoring.”
- “7. Continue on a limited basis monitoring of radiological
content of sediments.”
4th Session (27—28 May 63 )
“B. Continuation of the Radium Monitoring Network for dection of
accidental spills and evaluation of average radioactivity levels
throughout the Basin... [ including] (1) Extension of the analyses...
to include other significant radioisotopes associated with uranium,
lead-210, and thorium. (2) Evaluation of radioactive fallout
in Basin waters by analysis [ for] Strontium—90, gross beta activity,
and a garna scan.. .“ . . . “(2)(C) Sediment monitoring for qross alpha
activity and radium—226 at a reduced number of sampling points”,
(2)(D) Studies of residual radium—226 contamination at selected
farms...”, (2)(F) Sampling of all uranium mill effluents for
lead-2l0 and thorium...”
5th Session (26 May 64 )
“7. The Project will study and evaluate the effects of uranium
on fish.”
6th Session (26 Jul 67 )
“7. The surveillance activities performed by State and Federal
agencies shall be continued for the purpose of providing a continuing
evaluation of the adequacy of control measures in terms of the
short—range and long—range environmental radioactivity levels.”
7th Session (15—17 Feb 72 )
No recommendations addressing radiological considerations.
4
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Two objectives for the RMN system can be derived from the
Conference assignments and the work leading up to the Network. First
the Network is to quantify the fate of uranium mill wastes in the
streams of the Colorado River Basin and second, to provide a warning
system for spills of potentially toxic materials. To be able to
achieve these objectives, the Network must distinguish between
1 background” or natural concentrations and man-caused concentration
and the system must provide fast analyses. The long period of record
available for some stations provides for the identification of background
levels so long as a significant rise in concentration is affected
by artificial discharges. The ability to warn of spills has never
been fully realized and must be considered inoperative at present
due to a lack of radioassay capability.
The first RMN station was established in January, 1961 (RMN—12;
Animas River downstream of Durango, Colorado). The Network grew to
twenty-seven in the early sixties and has now declined to fifteen
stations, twelve of which are sampled by the U.S. Geological Survey
for the Region VIII offices of the Environmental Protection Agency.
The decline in number of sampling locations has followed the decline in
active uranium mills. Eighteen major mill sites (Table 2) have been
identified in the Colorado River drainage -- only four of these sites
have what can be considered “active” mills at this time (Rifle,
Colorado; Uravan, Colorado; Moab, Utah; and LaSal, Utah). However,
some upswing in uranium extraction activity is expected 3. An over-
view of sampling locations and mills, indicating whether or not they
are operating, is given in Figures lA and lB. Figure 1, which may
be found in the rear pocket, locates the sampling sites and mills
more accurately.
Sample collection frequencies have ranged from hourly to quarterly
(4 times per year). Hourly samples are collected at two sites (RMII 18
and 20, upstream and downstream of Uravan, Colorado) when the automatic
samplers are operating. The remaining thirteen stations have grab
samples collected at frequencies varying from once per week, once per
month, and once every three months. Sampling frequencies for each site
are presented along with the data tables in the Appendix. The samples
receive no treatment in the field prior to radioassay.
Radioactivity in uranium milling wastes results from its presence
in raw uranium ore. Uranium-bearing ores normally have a uranium
content of from 0.1 to 2.0 percent of U 3 0 8 (uranium oxide) and generally
3. “Leasing of AEC Controlled Uranium Bearing Lands -- Colorado,
Utah, New Mexico”, Draft Environmental Statement, LJSAEC, March,
1972, WASH—1523.
5
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TABLE 2
COLORADO RIVER BASIN URANIUM MILLS AND RMN STATIONS
Mill Location
Rifle, Colorado (old mill)
Rifle, Colorado (new mill)
Uravan, colorado
Naturita, Colorado a
Slick Rock, Colorado b
“Government Pile” at Slick Rock
Maybell, Colorado
Gunnison, Colorado
Durango, Colorado
Grand Junction, Colorado
Moab, Utah
Mexican Hat, Utah
Monticello, Utah
Hite, Utah b
Green River, Utah b
Monument Valley, Arizona
Shiprock, New Mexico
Tuba City, Arizona
Rio Algom (LaSal, Utah) b
Period of Operation
Began Ended
1947 1958
1958 Operating C
1949 Operating
1947 1958
1958 1962
unknown (abandoned)
1957 1964
1958 1962
1949 1963
1951 1970
1956 Operating
1957 1965
1949 1959
1949 1953
1958 1961
1955 1966
1954 1966
1956 1965
1972 Operating
a. Operated as a concentrator from 1961 to 1963
b. Concentrator mill
c. Currently (1973) in “mothballs”
6
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TABLE 2 (Continued)
RMN STATIONS AND PERIOD OF RECORD
Number
( RMN- ) _________________ Period of Record
1 11/25/61 - Present
4 11/12/61 - Present
5 04/16/62 - 05/19/72
6 04/16/62 - Present
9 12/11/61 — Present
10 12/11/61 - Present
11 07/17/61 — Present
12
01/19/61 — 08/17/71
13 upstream of Farmington,
14 near Fruitland, New Mexico
14S downstream of Shiprock,
15 upstream of Mexican Hat, Utah
16 downstream of Mexican Hat,
17
18
20
21
22
* Sampling resumed recently by New Mexico and EPA Region VI.
Station Location
Colorado River at Silt, Colorado
Colorado River at DeBeque, Colorado
Gunnison River at Grand Junction, Colorado
Colorado River near Fruita, Colorado
Colorado River north of Moab, Utah
Colorado River south of Moab, Utah
Animas River at Durango, Colorado
Animas River near Cedar Hill, New Mexico
(Colorado)
San Juan River
New Mexico
San Juan River
San Juan River
New Mexico
San Juan River
San Juan River
Utah
San Miguel River at Naturita, Colorado
San Miguel River at Uravan, Colorado
San Miguel River downstream of Uravan,
Cal orado
Dolores River near Bedrock, Colorado
Tomichj Creek near Gunnison, Colorado
07/09/62
08/01/62
07/09/62
12/11/61
12/11/61
10/28/61
10/27/61
10/27/61
10/30/61
11/12/61
- 04/27/64
- 09/03/69
— 07/19/71 *
— Present
- 10/21/70
- Present
- Present
- Present
- Present
- 06/30/62
7
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TABLE 2 (Continued)
25
26
28
29
30
31
32
33
12/11/61
10/30/61
07/02/62
07/16/62
07/30/62
05/06/63
- 06/30/65
- Present
- 05/16/72
- 10/28/64
- 07/04/72
- Present **
** Presently sampled by EPA Region IX.
Number
( RMN - )
24
Period of Record
12/11/61 - 06/30/65
Station Location
Gunnison River upstream of Gunnison,
Col orado
Gunnison River downstream of Gunnison,
Colorado
Dolores River near Gateway, Colorado
Yampa River downstream of Maybell, Colorado
Green River downstream of Green River, Utah
Colorado River at Northerly US-Mexico
Boundary, Arizona
Colorado River at Page, Arizona (Lake Powell)
Colorado River near Boulder City, Nevada
(Lake Mead)
Colorado River at Metropolitan Water
District Intake near Parker Dam, California
(Lake Havasu)
03/11/63 - Present **
01/07/63 - 10/01/68
8
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Figure IA
SUMMARY MAP
RMN STATIONS
OF
EXPLANATION
C
YOMING
S
• Operating RMN
Station
0 Discontinued
Station
RMN
0
>
LU
2
2
0
Li
—I
NEW
MEXICO
9
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Figure lB
SUMMARY MAP
URANIUM MILLS
OF
1 ’
EXPLANATION
WYOMING
S
• Operating
Mill
0 Abandoned
Mill
w
2
2
0
U-
-J
C .-)
NEW MEXICO
10
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average about 0.25 percent. The uranium is present as uranium-238,
uranium-235, and uranium-234. About 99 percent (by weight) of the
natural uranium is U-238. Hence, in addition to uranium, the decay
products of U-238 are of primary concern in uranium milling wastes.
The radioactive decay products of U-238 are shown in Table 3. It is
estimated that about 85 percent of the total radioactivity entering
a mill as raw uranium ore becomes waste (assumes uranium in secular
equilibrium with its 13 daughter products). Thus about 1950 x 106
picocuries of combined alpha and beta activity are released per pound
of uranium recovered 4. The bulk of this waste radioactivity
(97 to 99 percent) goes to tailings piles as suspended solids.
Uranium is hazardous in large quantities by virtue of its chemical
toxicity rather than its radioactivity. At times, as much as 99
percent of the uranium’ is recovered and only one percent goes to
waste. Radium has the lowest Maximum Permissible Concentration in
Water (MPCw) and generally travels through the milling process quite
freely, with as much as 98 percent going to the tailings as suspended
solids and two percent being dissolved in the aqueous effluents.
However, the fate depends upon the leaching process used.
Of the two thorium isotopes in the U-238 chain, thorium-230 is
of most concern by virtue of its alpha emission and its long half life.
Under alkaline conditions, dissolved thorium should precipitate such
that in alkaline uranium leach processes the thorium should go with
the solid tailings and in acid leach processes the thorium may remain
dissolved in the milling process and then precipitate upon entering
surface waters (since surface waters of the Colorado River Basin are
generally alkaline).D
Strontium-90 measurements are utilized to evaluate the contribution
of atmospheric fallout to the surface waters. Strontium-90 is not
produced in the natural uranium decay chain. However, strontium-90
is ranked high as a hazard to human health. Strontium-90 and radium—226
are considered additive. Of course there are other products of certain
nuclear reactions that enter the atmosphere and pose a possible hazard
to health.
The RMN system continues to provide an unusually valuable
measurement of natural radium-226 and uranium concentrations (dissolved)
since sufficient samples are being collected to provide statistically
valid data. Unfortunately, it is rare when unusual and, perhaps,
benign elements or compounds are measured over long periods of time
4. 1 pound of uranium has an activity of about 150 ici and there are
13 radioactive daughter products, which, if they are in secular
equilibrium have the same activity. Thus, if uranium is removed,
13 x 150 uci = 1950 vci or 1950 x 106 pci are released. This assumes
that radon-222 (gas) remains with the ore until the ore is crushed.
5. National Lead Co., 1960, “An AEC Research and Development Report
From Winchester Laboratory.” Topical Report WIN 112, Winchester,
Mass. (Feb 60)
11
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TABLE 3
URANIUM-RADIUM FAMILY, MPCW VALUES a
MPCW a Critical
Nuclide pci/liter Organ Half-life Emission
Ra 226 b 3.3 Bone 1,602 yr Alpha
Pb 21 O 33 Kidney 20.4 yr Beta
p 21O 233 Spleen 138.4 days Alpha
667 Bone 8 x 104 yr Alpha
Th 234 6,667 GI Tract 24.1 days Beta
U 234 10,000 GI Tract 2.47 x lO yr Alpha
U 238 13,300 GI Tract 4.51 x i0 9 yr Alpha
Bi 21 ° 13,300 GI Tract 5 days Beta
Pa 234 c 1.1 mm Beta
P 0 2 1 8 c 3.05 mm Alpha
Po 214 c 1.64 x i -4 sec Alpha
Bi 214 c 19.7 inn Beta
Pb 214 c 26.8 mm Beta
Rn 222 N/A (gas) Lung (daughter- 3.82 mm Alpha
products)
d 6 667 GI Tract 4.51 x lO yr Alpha
Th e 333 Bone 1 .41 x l010 yr Alpha
a. MPCW value is the Maximum Permissible Concentration in water for an
average member of the general population (1/30th HB 69 value for
continuous occupational exposure), NCRP, 1959.
b. The U.S. Public Health Service 1962) recomended that water supplies
be subject to “approval” if Ra 2 6 concentrations exceed 3 pci/l. The
Federal Radiation Council has further stated that the daily consumption
of 2 liters (in liquids and “solid” foods) of water containing
10 pci Ra 226 /l would produce a dose equal to the recommended upper
limit dose for the general population.
c. No value given for these short-lived materials.
d. Since the specific activity of Unat (U 238 + U 234 + U 235 ; 99% U 238
by weight) is 3.34 x l0- curies per gram, the MPC may also be
expressed as 2 x i04 ugh.
e. Comprised of Th232 and Th 228 .
Note: The MPCW for Sr-90 from HB69 is 33pc1/l. The Public Health Service
has recommended that water supplies be subject to “approval” if
Sr—90 concentrations exceed lOpci/1. The Federal Radiation Council
has further stated that the daily consumption of 2 liters (in
liquids and “solid” foods) of water containing lOOpci Sr 9 O/l would
produce a dose equal to 1/3 of the recommended upper limit dose for the
general population.
12
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such that the true aspects of discharges can be calculated. More
frequently, we do not measure the parameters of water quality until
we are in the midst of anomalous concentrations that are causing
water quality problems. We believe that the value of such a long—
term sampling network will be shown in the subsequent sections on
“Results of Radioassay at Long-term Stations” and “Detailed Analysis
of Radium-226 Concentrations and Mean Monthly Flows”. Time-dependent
and statistical analysis of these data provide unique information
concerning the background concentrations and the impact of man-caused
alterations in the content of uranium decay chain isotopes in the
waters of the Colorado River Basin.
Reductions in the Network over the last two years have severly
impaired the usefulness of the Network as far as the spill-detection
and monitoring of abandon piles functions. If the AEC-leasing
program should occur, it is probable that the Network will have to
be reestablished. It is currently Region VIII’S objective to expand
the Network into Wyoming to provide adequate surveillance of the
Shirley Basin Area, the Gas Hills area, and areas near Douglas and
Buffalo, Wyoming.
13
-------
METHODS OF RADIOCHEMICAL ANALYSIS FOR RADIUM AND URANIUM
1. Radium—226
All current assays for radium-226 and most of the previous assays
follow the method outlined in Standard Methods for the Examination of Water
and Wastewater , (American Public Health Association, 1015 18th Street, N.W.,
Washington, D. C. 20036). The method consists of percipitation of radium
and subsequent measurement of the alpha activity of daughter products,
primarily radon-222. At levels in excess of 1 picocurie /1 (pc/l) the error
at the 95 percent confidence level is on the order of 5 percent. At
levels less than 0.25 pc/i, the equivalent error is on the order of t 10
percent.
2. Uranium
A modified fluorophotometric method has been used for uranium
determinations. Chemical separation is used to remove interfering elements
such as iron. The method measures the presence of all isotopes of uranium.
The resulting concentration is expressed in terms of “Uranium-natural” or
“total uranium”.
14
-------
RESULTS OF RADIOASSAY AT LONG TERM NETWORK STATIONS
This section presents a summary, in terms of yearly averages, for
some 3,451 measurements of radium-226 and 3,126 measurements of total or
natural uranium. The section describes the average concentrations in terms
of their geographical relationship to uranium-extraction activities. As
noted previously, Figure 1 (in the rear pocket) graphically portrays the
RMN sampling stations and uranium mill sites.
Table 4 lists radium-226 data for the twenty-seven Network Stations.
Mean annual averages have ranged from 0.02 pci/i at RMN 22 (Tomichi Creek
upstream of the “Gunnison Pile”) to 3.33 pci/i at RMN 20 (San Miguel River
downstream of the Uravan Mill). Table 5 lists total uranium concentrations.
(Mean annual averages of uranium have ranged from 0.80 pgm/l to 33.52 pgm/l).
Background Concentrations of Radium and Uranium
Six of the RMN stations may be considered as collecting surface water
with background concentrations of uranium and uranium decay products.
These stations represent the Colorado River (RMN 1), the Animas River
(RMN 11), the San Juan River (RMN 13), the San Miguel River (RMN 17),
Tomichi Creek in the Gunnison drainage (RMN 22) and the Gunnison River
(RMN 24). The mean dissolved radium concentration for these six stations
is 0.08 pci Ra 226 /l. The mean dissolved uranium concentration for five
of the stations (no measurements at RMN 22) is 2.1 jig U/l. The ranges in
mean concentrations is wide for radium-226 (0.02 to 0.19 pci/i; mean
0.08 pci/l) and narrower for uranium (1.21 to 2.91 j igm/1; mean 2.1 pg/l).
The uranium to radium-226 concentration ratio (both elements in
their dissolved form) ranges from 15.3 to 40.4 and averages 28.6 )Jgm/pci
at “background stations”. Uranium in secular equilibrium with radium-226
in rocks or ore may be about 3.Oj.igmUtOt 3 or relatively smaller. The
pci Ra 6
higher ratio in surface water may be caused by a higher degree of mobility
for the uranium. The reach from station RMN 25 to 5 is one in which no
uranium milling is known to have taken place and here the uranium-radium
ratio increases downstream from 56 to 95 pgm/pci.
Radium and Uranium Concentrations Near Uranium Mill Sites 6
Rifle, Colorado lull
The Rifle Mill, which has been in “mothballs” during the recent past,
lays between RMN stations 1 and 4. Radium concentrations remain equal
(within a counting error of, perhaps, 0.05 pci/l) between the stations,
6. The “operating” mills at Rifle, Uravan, and Moab have “treated” discharges
to the rivers on which RMN stations are located.
15
-------
TABLE - 4
MEAN ANNUAL CONCENTRATION OF RADIUM-226
AT SURFACE WATER MONITORING NETWORK STATIONS
January 1961 - June 1972
(Values in Picocuries per Liter)
A I I 0 N Y E A R
Avg.
for erio 0 ecor
0.19
0.17
0.09_
0.16
0.23
0.37
0.05
0.21
0.07.....
0.07
0.08
0.13
O.iT
0.06
1961
Colorado 0.20
Colorado 0.20
Junction, Cola. --
Fruita, Colorado --
Utah 0.34
Utah 0.40
Colorado 0.06
Hill, N.M. 0.37
Farmington, N.M. ——
Fruitland, N.M. -—
Shiprock, N.M. --
Mexican Hat, Utah 0.18
Mexican Hat, Utah 0.33
Naturita, Colorado 0.02
1962 11963 11964 1965 1966 11967
0.16 0.24 0.23 0.16 0.20 ! 0.18
0.18 0.21 0.21 0.17 0.18 I 0.19
0.07 0.11 0.12 0.07 0.09 0.08
0.17 0.21 0.18 0.17 1 0.16 0.17
0.24 0.29 0.24 0 19 0.25 0.27
0.33 0.55 0.31 0.27 0.38
0.05 0.06 0.05 0.04 0.05 0.05
0.39 0.18 0.13 0.08 0.09 0.09
0.09 0.06 0.05 -- -— ——
0.11 0.11 0.07 0.06 0.05 0.06
0.10 0.13 0.09 0.06 0.05 --
0 11 0.13 0.15 0.07 0.08 0.08
0.24 0.15 0.09 0.06 0.07 TO.O8
0.04 0.05 0.07 0.05 0.05 1 0.04
1968 1969 i 1970 1971 1972*
0.19 0.17 0.17 0.17 0.16
0.17 0.14 0.12 0.15 0.18
0.08 0.07 0.06 0.13 0.10
0.14 0.11 0.18 0.12 0.15
0.24 0.17 0.15 0.26 0.17
0.37 0.20 0.18 0.22 0.26
0.05 0.05 0.07 0.07 0.10
0.07 0.05 0.05 0.06 --
-— —- I -- —- -—
0.06 0.06 j -- -- --
-- 0.06 0.06 0.08 --
0.09 0.08 0.05 0.37 0.15
0.07 0.08 0.04 -- --
0.03 0.04 i 0.04 0.09 0.10
0.10 0.07 0.09 0.11 ! 0.14
3.33 1.67 0.40 10.36 0.39
0.29 0.28 0.35 1.17 0.25
-- -- -- -- --
-- -- I -- -- --
-- -- -- -- --
1.78 0.84 0.58 0.58 0.41
—- 0.06 0.06 0.06 0.10
-- -- -- -- --
0.14 0.14 j 0.11 0.11 0.10
0.16 0.15 0.13 0.16 0.20
0.22 0.19 0.16 0.19 0.10
0.25 -- -- -- --
,
Uravan, Colorado 0.14
Uravan, Colorado 0.96
Bedrock, Colorado 0.85
Gunnison, Colorado . 0.02
Gunnison, Colorado 0.03
Gunnison, Colorado 0.04
Gateway, Colorado .0.46
Maybell, Colorado --
River, Utah --
U.S.-Mex. Border -—
Arizona -—
Boulder City, Nevada --
Metropolitan Water District --
Cal.—Ariz.
0.22 0.33 0.13 0.15 0.13 LO.12
0.83 1.33 0.84 0.47 1.89 1.54
0.39 0.46 0.60 0.27 0.32 0.49
0.02 -- -- -- I -- --
0.09 0.05 0.06 0.04 -- --
0.05 0.04 0.04 0.03 -- --
1.35 1.02 1.10 0.66 1.17 .1.16
0.09 0.09 0.09 0.06 -- --
0.07 0.10 0.09 -- -- --
0.14 0.18 0.18 0.16 0.16 J.0.17
-- 0.25 0.24 0.17 0.15 0.14
-- 0.33 0.32 0.40 0.40 0.31
-- I 0.35 0.35 0.35 0.38 0.33
- 0.17
1.22
0.48
. 0.02_
0.06
0.04
0.95_
0.08
0.09
- 0 l5
0.17
0.29
0.34
* Through June, 1972
-------
TABLE — 5
MEAN ANNUAL CONCENTRATION OF URANIUM (TOTAL)
AT SURFACE WATER MONITORING NETWORK STATIONS
September 1962 — June 1972
(Values in Micrograms per Liter)
E A R Avg. Concentration
for Period of Record
1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972’
Colorado
3.30
2.80
2.87
3.09
2.12
2.82
3.21
3.39
2.80
3.17
2.54
2.91
DeBeque, Colorado
4.87
3.47
3.84
3.28
2.98
4.18
3.94
4.26
3.82
2.56
2.90
3.60
Grand Junction. Colorado
12.75
10.44
10.71
8.65
10.81
10.07
9.43
8.57
6.25
5.77
6.55
9.57_
Fruita, Colorado
9.22
9.87
9.67
6.99
7.66
8.44
7.76
7.62
6.29
3.50
4.75
7.88
Moab, Utah
9.97
10.94
10.48
7.83
8.46
9.61
8.45
7.83
6.12
6 64
6.00
8.47
Moab, Utah
12.30
11.85
11.74
9.46
10.22
12.12,
10.43
9.80
9.47
8.90
8.19
1O.32_
Colorado
1.15
1.20
1.06
1.46
1.13
1.44
1.60
2.30
1.82
0.80
0.85
1.39
Hill, N.M.
6.69
3.45
2.76
2.29
1.74
2.42
2.01
2.35
2.49
1.13
--
2.99
Farmington, N.M.
5.50
2.26
1.57
-—
--
--
—-
-—
—-
——
--
2.83_
Fruitland, N.M.
6.37 ! 3.77
2.64
1.75
1.98
3.37
2.87
2.75
—-
—-
--
2.90
Shiprock, N.M.
Mexican Hat, Utah
Mexican Hat, Utah
Naturita, Colorado
11.07 15.52
10.12 7.57
10.50 9.26
1.05 1.36
6.95 8.08
29.86 22.38
10.72 15.11
13.89
7.85
10.99
1.54
3.36
33.52
14.17
3.75
3.63
5.73
2.13
4.19
17.43
5.90
2.14
3.86
3.88
2.63
3.88
22.45
7.22
—-
6.09
6.19
3.05
4.14
15.27
9.02
--
4.12
4.38
3.47
4.50
24.50
7.71
2.90
3.73
4.07
3.00
5.41
20.41
7.26
3.76
2.63
3.10
2.66
3.41
12.75
6.66
2.00
3.10
—-
2.47
3.46
10.24
10.19
-—
1.70
--
2.01
3.51
11.83
4.05
8.49
5.44
8.07
2.37
4.90_
19.71
8.46
Uravan, Colorado
Uravan, Colorado
Bedrock, Colorado
Gunnison, Colorado
-— T -—
— -
--
--
Gunnison, Colorado
Gunnison, Colorado
1.75 0.87
2.77 1.62
1.28
2.48
1.37
2.78
--
- —
—-
--
--
--
--
--
--
-—
-
—
1.21
2.26
Gateway, Colorado
Maybell, Colorado
609 11.28
2.37 2.75
26.50
2.79
13.94
2.74
23.35
——
20.79
——
21.84
—-
17.25
3.10
9.59
1.75
10.45
1.35
8.63
1.85
13 89_
2.48
Green River, Utah
U.S.-Mex. Border
Arizona
Boulder City, Nevada
6.52 4.97
8.85 8.11
—— 9.09
-— 7.87
4.41
8.37
8.76
9.06
8.54
5.48
9.25
6.60
4.55
6.92
6.05
5.69
6.89
7.19
6.72
7.37
--
7.16
6.41
7.61
--
6.53
6.17
6.96
--
6.02
4.53
6.72
--
5.45
8.22
6.40
5.01
7.32_
6.46
7.69
Metropolitan Water District
-- 8.35
8.32
8.30
7.31
7.26
7.11
--
--
--
--
7.79
Cal.-Ariz.
.
* T ’rouah June, 1972
-------
while an increase in uranium as the order of 30 percent has always been
noted between the stations. Thus, the U/Ra 226 ratio increases in the
downstream direction from 15 to 21 jigm/pci.
Gunnison, Colorado Mill
This mill site, comprised now of a graded tailings pile, lays between
RMN stations 22 and 24 upstream and station 25 downstream. As in the case
of the Rifle Mill, radium concentrations appear to remain equal at the
Gunnison stations while uranium concentrations increase (there are no
uranium data for station RMN 22). Uranium to radium ratios increase between
RMN stations 24 and 25 (20 to 56j .igm/pci).
Grand Junction, Colorado Mill
This mill was closed and the tailings pile graded a few years ago.
The mill site lies between RMN stations 4 and 5 (upstream) and 6. Again,
radium concentrations do not appreciably increase through the reach but
uranium does increase by about 20 percent. But the uranium/radium ratio
remains constant (5opgm/pci) due to the slight increase (which is not
statistically significant) in radium.
Moab, Utah Mill
This operating mill lies between RMN stations 9 and 10. Radium—226
concentrations usually increase from station 9 to 10 by about 60 percent
(0.23 to 0.37 pci/i). Uranium concentrations also increase by about 20
percent. The relatively smaller increase in uranium causes the uranium/
radium ratio to decrease in the downstream direction (37 to 28 ugm/pci).
Naturita, Colorado Mill
This site is abandoned and the tailings pile has been graded and
planted. There is an increase in both radium (180 percent) and uranium
(100 percent) from the upstream to the downstream station. The uranium/
radium ratio decreases from 39 to 29 pgm/pci.
Uravan, Colorado Mill
The mill at Uravan is operating and lays between RMN stations 18 and
20. Comparison of the stations shows a consistent increase in radium of
60 percent and in increase in uranium of about 300 percent. The uranium!
radium ratio therefore decreases from 29 to 16j.igm/pci.
Durango, Colorado Mill
The mill at Durango is closed and the tailings piles exist between
RMN stations 11 and 12. Radium concentrations increased some 300 percent
on the average, but were relatively constant during the last four years
of measurement (1968-1971). The uranium/radium ratio decreases from 28
ugm/pci upstream to 14 pgm/pci downstream.
18
-------
Shiprock, New Mexico Mill
This mill has generally been abandoned, however, some activity was
taking place there in the early seventies. The site lays between RMN stations
14 and 14S. Radium concentrations have been essentially equal through the
period of record while uranium concentrations appeared to increase through
at least 1970. Thus the uranium ratio increases in the downstream direction
from 41 to 106 Mgm/pci.
Mexican Hat, Utah Mill
The Mexican Hat site has been abandoned for some Lime. Drainage from
the site enters the San Juan River between RMN stations 15 and 16. With the
exception of an increase in radium past the drainage in the early sixties and
a possible high measurement in 1971, radium concentrations have been constant.
Uranium concentrations generally increase by about 50 percent. The uranium/
radium ratio increases slightly from 42 to 48 Mgm/pci in the downstream
direction.
Thorium, Lead-210 and Polonium-2l0 Data Collected Near Uranium Mill Sites
Table 6B presents some limited thorium, lead, and polonium data that were
collected sporadically through 1971. Gross alpha, gross beta, and strontium-90
data are also presented. These data are sumarized as averages for the varying
periods of record in Table 6A.
Gross alpha concentrations ranged from a high of 68 pci/l (RMN 20) to
1 pci/i (RMN 4, 11, 17, 18, 29). Gross beta concentrations ranged from a high
of 50 pci/i (RMN 20) to a low of 1 (±2) pci/i (RMN 11). The highest thorium—
alpha concentration measured was 8.0 pci/l at station RMN 20 while the lowest
was 0.05 pci/i at RMN 16. Lead-210 concentrations ranged from 0.6 pci/i
(RMN 20, 33) to 0.00 pci/i (RMN 4, 9). Strontium-90 concentrations ranged
from 9.6 pci/l at RMN 29 to 0.0(tO.6) at RMN 11. And polonium-210 concentra-
tions ranged from 0.30 pci/i at RMN 20 to 0.00(±0.00) pci/i at RMN 4, 16, 20.
It must be recognized that the infrequent nature of these measurements
make speculative any conclusions that may be drawn from the majority of the
data. The averages in Table 7 suggest some general increase in total alpha
activity as one progresses downstream along the Colorado River in Colorado
and Utah. The increase does not hold for the San Juan River and yet it does
hold for the San Miguel River in Colorado. Total beta activity remains at
about twice the total alpha activity. Insufficient data are present for
thorium, lead and polonium to make any similiar conclusions. Strontium-90
data suggest an increase in the Colorado River as it progresses downstream
and also suggest that concentrations (of Sr-90) may have been higher in
the San Juan watershed than in the upper Colorado River watershed. It should
be noted that in the majority of cases, the highest strontium-90 concentration
occurs during the third quarter of the year (Jul - Sep -- See table 6).
19
-------
AVERAGE CONCENTRATIONS
TABLE 6A
OF SPECIAL RADIOISOTOPES
MEASURED AT RMN STATIONS
RMN
Station
1 (Silt)
Representativenessa)
a
3.5
B
9.6
8/ct
3
Th-ct
0.3
Pb-210
(0.1
Sr-gO
—(.4)
Po-210
<0.1)
D
4 (Debeque)
WD
4.1
g
8.6
g
2
<0.1
<0.1
0.8
g
<0.1
6 (Fruita)
E
7.1
15.4
2
0.1
0.1
—
<0.1
9 (Upstream
Moab)
WD
8.9
g
15.6
g
2
1.0
<0.1
1.6
g
<0.1
10 (Downstream
Moab)
VWD
10.1
g
14.8
g
1
0.1
9
0.1
9
-(0.5)
0.1
g
r’
Q
11 (Upstream
Durango)
D
1.1
6.6
6
0.6
14S (Downstream
Shiprock)
E
6.4
13.8
2
<0.1
<0.1
—(<0.1)
15 (Upstream
Plexican Hat)
VWD
5.1
g
12.0
g
2
—(0.1)
<0.1
1.9
g
—(<0.1)
16 (Downstream
Mexican Hat)
VWD
5.2
g
11.5
g
2
0.1
g
0.1
g
-(0.8)
<0.1
g
17 (Naturita)
D
2.5
6.3
2
0. 1
<0.1
-(0.5)
-(<0.1)
18 (Upstream
Uravan)
D
4.4
9.6
2
<0.1
<0.1
-(0.3)
-(<0.1)
20 (Downstream
Uravan)
VWD 21.6 g 21.7 g 1
0.7 g <0.1 g <0.1
-------
TABLE 6A (Cont. )
RMN
Station ___________________ ____ ______ _____
29 (Downstream
Green River)
30 (NIB Border)
32 (Lake Meade)
33 (Lake Havasu)
Distribution Code: VWD: Very Well Distributed; WD: Well Distributed; D: Distributed; E: Early in
period of measurements ( l963-l965). Refers to distribution of measurements with
time through measurement period (1963 - 1971).
Parentheses indicate average based upon fewer than 4 measurements.
Dashes indicate no measurements.
g. Sufficient data to serve as basis for comparison of long-term averages.
Representativeness a)
Th-cz Pb-2l0 Sr-90
Po-210
a)
E
2.6
15.6
6
4.5
E
6.6
7.8
1
1.4
E
6.8
11.3
2
—
-
1.5
VE
4.6
12.6
3
0.1
0.2
-------
station No.:
Location :
*Quarters :
1 — Jan—Mar
2 - Apr-Jun
3 — Jul—Sep
4 - Oct-Dec
RMN- 1
COLORADO RIVER AT
SILT, COLORADO
TABLE 6R
GROSS ALPHA, GROSS BETA, THORIUM ALPHA, LEAD-210, STRONTIUM-90 AND POLONIUM-210
IN COLORADO RIVER BASIN SURFACE WATERS
Year
.
nuarter*
‘
Gross Alpha
PcIL
Gross Beta
Pc/L
Th-Alpha
Pc/L
Pb-210
Pc/L
Sr-90
Pc/L
P0-210
Pc/L
1963
3
4
2
2
10
18
--
--
0.4
--
--
••
1964
1
2
3
4
2
3
5
11
8
20
8
9
0.4
0.1
0.2
0.2
0.0
0.0
0.1
0.0
--
--
--
--
--
-—
--
--
,
‘ ‘
1
2
3
4
2
2
1.2
--
8
8
6.2
--
0.1
0.5
1.2
--
0.0
0.1
0.1
--
--
—-
--
--
--
-—
0.04
--
- 1966
4
.
.
1967
4
1°68
-
1
2
3
4
--
--
—-
-—
--
--
-—
--
0.03 ± 0.04
0.05± 0.04
-—
--
0.08 ± 0.10
0.1 ± 0.09
--
--
--
--
——
--
0.01 ± 0.02
0.01 ± 0.02
-—
--
1969
4
::
5 ± 1
::
5 ± 3
::
--
::
--
::
0.4 ± 0.5
::
-—
i 7O
1
2
4
4 ±1
4 ± 1
2.7 ± 1
3.3±1
10 ±3.7
13.7 ± 3.3
7.1 ± 3.3
4.7± 3.3
—-
-—
——
--
-—
-—
-—
--
—-
--
--
--
——
—-
-—
1971
1972
1
4
1
4 ±1
::
--
9 ±3
::
--
--
::
--
.
-
::
--
::
--
::
--
.
2
.
-------
TABLE 6B(Cont.) *Quarters :
1 — Jan-Mar
GROSS ALPHA, GROSS BETA, THORIUM ALPHA, LEAD-210 , STRONTIUM90 AND POLONIUM-210 2 - Apr-Jun
IN COLORADO RIVER BASIN SURFACE WATERS 3 - Jul-Sep
Station No. : RMN-4 4 - Oct—Dec
Location : COLORADO RIVER AT
DE EQUE, COLORADO
ear
Quarter
Gross Alpha
Pc/I
Gross Beta
Pc/I
Th-A lpha
Pc/I
Pb-210
Pc/L
Sr-90
Pc/L
P0-210
Pc/I
1963
3
4
3
3
11
22
—-
--
-—
--
2.8
nQ
--
--
•.
‘ ‘
1
2
3
4
3
1
2
8
9
23
13
13
--
—-
——
--
——
——
——
--
0.9
1.8
11
-—
—-
——
--
.
1965
1
2
4
2
2.9
5.3
8
8
7.0
9.1
--
--
—-
—-
--
-—
——
--
1.1
1.2
1.2
0.7
--
-—
-— •1
-—
1
2
3
4
3.7
3.3
3.3
4.6
8.2
4.5
9.0
8.4
—-
--
—-
--
--
—-
——
--
0.8
0.6
0.8
0.4 -
--
—-
--
--
“U,
1
2
4
b.I
5.1
3.9 ± 0.4
6.0 ± 0.6
7.6
6.6
9.0 ± 1.4
9.2 ± 2.0
—-
——
--
—-
--
——
--
--
0.5
0.5 ± 0.1
0.9 ± 0.1
0.8 + 0.1
--
——
--
--
1968
1
2
3
4
5.8 ± 1.1
3.2 ±0.8
3.9 ±0.8
3.4 ±0.8
6.3 ± 1.6
3.8 ±1.5
5.6 ±2.0
7.0 ±2.0
0.03 ± 0.04
0.05 ±0.04
0.05 ±0.04
--
0.1 ± 0.1
0.01 ±0.1
0.00 ± 0.00
0.00
1.8 ± 0.2
0.5 ± 0.1
0.1 ± 0.1
0.1 ± 0.5
00 ± 0.02
0.03 ± 0.03
0.00 ± 0.00
--
1969
.
1
2
3
4
4.4 ±1.0
2.0 ±0.4
2.6 ±0.7
±1
5.6 ±1.1
7.1 ±1.5
5.0 ±0.9
3 ±3
--
--
—-
0.00
0.00
0.00
0.3 ± 0.1
0.5 ± 0.1
0.4 ± 0.1
flç ±fl5
—-
—-
--
1970
-
1
2
3
4
4.7 ±1
2.7 ±1
5 ±1
4.3 ±1
6.7 ±3.7
11 ±3 3
9 ±3•3
5.2 ±3.2
—-
—-
—_
--
——
-—
- —
--
--
--
--
—-
—-
--
1971
1972
1
6 ±1
8 ±3
—-
-—
--
—-
.
-------
TABLE 6B(Cont.) *Quarters :
1 - Jan-Mar
GROSS ALPHA, GROSS BETA, THORIUM ALPHA, LEAD-210, STRONTIUM-90 AND POLONIUM-210 2 - Apr-Jun
IN COLORADO RIVER BASIN SURFACE WATERS 3 - Jul-Sep
Station No. : RMN-6 4 - Oct-Dec
Location : COLORADO RIVER NEAR
FRLJITA, COLORADO
Year Quarter*
I
Gross Alpha
Pc/L
Gross Beta
Pc/L
Th-A lpha
Pc/L
Pb-2 1 0
Pc/L
Sr—90
Pc/L
Po-2 10
Pc/I
1963
3
4
7
5
41
11
0.1
0.0
0.1
0.3
—-
--
——
--
•,.
‘
1
2
3
4
7
2
9
14
22
14
18
10
0.5
0.1
0.1
0.3
0.1
0.0
0.1
0.1
——
-—
—-
--
——
——
——
--
1905
1
2
3
4
10
3
7.2
--
10
7
6.3
--
0.1
0.1
0.2
--
0.1
0.1
0.3
--
--
--
--
--
--
--
0.04
--
1966
1
4
.
-
1967
1
4
.
1968
1
4
--
-—
-—
--
0.02 ± 0.04
0.05± 0.03
--
0.02 ± 0.06
0.17± 0.0
--
--
--
--
0.04 ± 0.02
0.06 ± 0.02
--
1969
1
4
1970
1971
4
4
.
1972 1
2
-------
RMN-9
COLORADO RIVER UPS
MOAB, UTAH
t Quarters
1 - Jan-Mar
2 - Apr-Jun
3 - Jul-Sep
4 - Oct-Dec
Station No.:
Location :
TABLE 6B(Cont.)
GROSS ALPHA, GROSS BETA, THORIUM ALPHA, LEAD-210, STRONTIUM-90 AND POLONILJM-210
IN COLORADO RIVER BASIN SURFACE WATERS
Year
.
Quarter t
Gross Alpha
Pc/I
Gross Beta
Pc/I
Th-Alpha
Pc/L
Pc/L
Pc/I
Pc/I
1963
3
4
8
12.
33
20
-—
--
--
--
8.4
1.6
1.2
--
--
——
•_
fl A
1
2
3
4
5
2
10
10
12
16
21
14
——
——
--
--
-—
--
--
--
2.2
4.8
0.9
1.0
-—
- -
--
--
i 65
1
2
4
9
2
3.9
10
14
8
12
13
-—
--
--
-—
-—
--
- -
1.4
3.2
1.0
1.1
-—
——
- -
——
- IJuv
1
2
3
4
11
6.7
10
10
15
7.0
18
15
--
--
--
--
--
--
--
--
0.9
1.6
0.9
u.b
—-
--
--
- -
°‘
1
2
3
4
13
6.5
10 1
11 ± 1
lb
9.5
21 ± 2
7.9 ± 2.5
—-
—-
--
--
--
--
0.8 ± 0.1
3.6 ± 0.3
2.6 ± 0.2
--
--
--
0.02
1968
1
2
3
4
fl ± 2
53 ± 0.8
7.3 ± .1
8.6 ± .
5.6 ± 1.4
7.4 ± 1.5
15 ± 2
20 ± 4
0.10 ± 0.04
3 ± 0.13
0.13 ± 0.04
--
0.0 ± 0.09
0.1 ± 0.9
0.00
n_nfl
0.9 ± 0.1
0.8 ± 0.1
1.6 ± 0.1
0.1 ± 06
0.04 ± 0.00
--
--
1969
.
1
2
3
4
8.4 ± ..7
4.9 ± 0.7
16 ± 2
14.7 ± 1.7
11 ± 3
5.9 ± 3.6
18 ± 4
25.3 ± 3.3
--
--
—-
-—
0.00
0.00
0.00
--
0.4 ± 0.1
0.7 ± 0.1
1.3 ± 0.1
0.8 ± 0.6
--
--
--
--
1
2
3
4
8.5 ± 1
11 ± 1
6 1
. 18 ± 1.7
10.5 ± 4.5
19 ± 4.5
16 ±4
46 ±4.7
——
-—
——
--
0.5 ± 0.3
—-
-—
-—
--
——
1971
1
4
7 ±1
14 ±3
——
—-
——
1972
-------
TABLE 6B(Cont) *Quarters :
1 - Jan—Mar
GROSS ALPHA 1 GROSS BETA, THORIUM ALPHA, LEAD-210, STRONTIUM-90 AND POLONIUM-210 2 - Apr-Jun
IN COLORADO RIVER BASIN SURFACE WATERS 3 - Jul-Sep
Station No. : RMN-lO 4 - Oct-Dec
Location : COLORADO RIVER DWS
MOAB, UTAH -
Year
.
uarter*
Q
Gross Alpha
Pc/I
Gross Beta
Pc/L
Th-AIpha
Pc/L
Pb-2 10
Pc/L
Sr-90
Pc/L
Po-210
Pc/L
1963
3
4
9
4
31
8
0.1
0.2
0.0
0.1
-—
—-
•.
‘
‘“
1
2
3
4
6
3
8
13
16
14
22
13
0.0
0.0
0.4
0.2
0.1
0.0
0.2
0.4
--
--
--
--
--
--
1965
1
2
4
8
4
5
12
9
8
13
13
0.1
0.0
0.5
0.0
0.3
0.1
0.0
0.1
--
--
--
- -
--
--
0.05
0.12
- I vv
1
2
4
12
7.6
13
17
12
9.1
18
14
0.0
0.0
0.1
0.1
0.3
0.3
0.1
0.1
--
--
--
-- -
0.05
0.09
0.10
0.27
, ,
1 01
1
2
3
4
22
8.1
13 ± 1
14 ± 1
19
13
15 ± 2
12 ± 4
0.1
0.09
0.09 ± 0.02
0.32 ± 0.03
0.3
0.0
0.0 ± 0.1
0.0 ± 0.1
--
--
--
--
0.44
0.61
0.04 ± 0.01
0.09 ± 0.01
96o
1
2
4
ii ± 1
6.9 ± 0.8
75 ± 1.1
8.5 ± 1.5
10 ± 1
8.6 ± 1.6
19 ± 2
17 ± 4
0.09 ± 0.04
0.14 ± 0.04
0.17 ± 0.05
0.02 ± 0.05
0.08± 0.09
0.0 ± 0.1
0.5 ± 0.1
0.2 ± 0.1
--
--
--
0.02 ± 0.03
0.06 ± 0.03
0.21 ± 0.05
0.00 ± 0.04
1969
1
2
3
4
8.0 ± 0.8
4.4 ± 1.1
14 ± 2
19 ± 2.7
6.8 ± 2.8
5.7 ± 2.9
13 ± 3
26 ± 7
0.00 ± 0.05
0.01 ± 0.05
0.01 ± 0.05
0.02 ± 0.05
0.1 ± 0.1
0.0 ± 0.1
0.2 ± 0.2
--
--
0.6 ±0.6
u.uu ± 0.L
0.01 ± 0.04
0.08 ± 0.06
—-
1970
1
2
3
4
14
10 ± 1
18 ± 1.3
9.3±1
11.3 ± 4
23.5±3.8
29 ± 4.5
12 ±3.3
--
--
--
--
0.5 ± 0.3
--
--
1971
1972
1
4
1
15 ±2
.
19 ±3
——
——
-------
TABLE 6B (Cont.) *Quarters :
1 - Jan-Mar
GROSS ALPHA, GROSS BETA, THORIUM ALPHA, LEAD-210, STRONTIUM-90 AND POLONIUM-210 2 - Apr-Jun
IN COLORADO RIVER BASIN SURFACE WATERS 3 - Jul-Sep
Station No. : RMN-11 4 - Oct-Dec
Location : ANIMAS RIVER AT
DURANGO, COLORADO
Year
1
nuarter*
Gross Alpha
Pc/L
Gross Beta
Pc/L
Th—A lpha
Pc/L
Pc/L
Pc/L
Pc/L
1963
3
4
1
1
5
5
-—
--
——
--
0.9
0.7
0.9
—-
--
•
IñfA
I u
1
2
3
4
1
1
2
2
9
8
7
9
1
--
--
--
--
1.5
0.8
0.7
T.2
--
--
1965
1
2
4
2
0
0.6
--
5
3.7
--
-
--
--
0.9
0.7
--
--
- 1966
1
4
-
1967
1
4
.
1968
1
4
1969
1
4
‘
1 ± 1
1 ± 2
-—
--
0.0 ± 0.6
0.4 0.3
--
--
- “U
1
2
3
4
1 ±1
1 ±1
2 ±0.5
1±1
6±2
13±2
7 ±2
8±2
--
-—
-—
--
--
--
--
--
0.5 O.4
--
--
--
--
--
1
4
.
1972
1
-------
TABLE 6B(Cont.) *Quarters
1 — Jan—Mar
GROSS ALPHA, GROSS BETA, THORIUM ALPHA, LEAD21O, STRONTIUM-90 AND POLONIUM-210 2 - Apr- )un
IN COLORADO RIVER BASIN SURFACE WATE 3 - Jul-Sep
Station No. : RMN-14S 4 - Oct-Dec
Location : SAN JUAN RIVER DWS
SHIPROCK, N. M.
Year {
Quarter*
Gross Alpha
Pc/L
Gross Beta
Pc/L
Pc/L
Pc/L
Pc/L
Pc/L
--
1963
3
4
12
7
16
14
0.0
0.1
0.0
0.1
0.0
u.u
--
--
--
--
--
‘I..
1964
1
2
3
4
3
8
6
14
14
17
19
•II
0.2
0.2
0.2
0.0
0.1
0.4
0.1
--
--
--
-—
--
--
--
—-
--
--
1965
1
2
3
4
2
2.5
--
9.0
--
0..I
0.0
0.0
--
0.0
0.2
—-
-—
0.0
--
- 1966
1
2
3
4
.
-
1967
1
2
3
4
1968
1
2
3
4
7 1
24±5
—-
-—
-—
—-
—-
——
--
1969
1
2
3
4
6±1
14±2
1970
.
1
2
3
4
—
1971
1
2
3
4
-
1972
1
2
-------
Station No.:
Location :
*Quarters :
1 - Jan-Mar
2 - Apr-Jun
3 - Jul-Sep
4 - Oct-Dec
RMN-15
SAN JUAN RIVER UPS
MEXICAN HAT, UTAH
TABLE 68 (Cont.)
GROSS ALPHA, GROSS BETA, THORIUM ALPHA 1 LEAD-210, STRONTIUM-90 AND POLONIUM-210
IN COLORADO RIVER BASIN SURFACE WATERS
1 )
0
Year
Quarter*
Gross Alpha
Pc/L
Gross Beta
Pc/L
Th-Alpha
Pc/L
Pb-2 10
Pc/L
Sr-90
Pc/L
Po-2 10
Pc/L
1963
3
4
6
4
29
14
--
-—
--
-—
——
6.0
3.2
--
--
•_
1964
1
2
3
4
4
3
6
11
10
14
21
10
—-
--
-—
-—
--
--
——
2.9
4.4
1.9
--
--
--
--
——
1965
1
4
::
3.8
13
::
7.8
::
::
2.7
::
1.4
::
--
--
1966
-
1
2
3
4
3.4
2.6
7.0
5.5
6.8
5.0
17
9.7
--
--
--
--
--
1.2
0.9
3.1
1.3
--
--
--
—-
1967
1968
1
2
3
4
1
2
4
6.4
7.1
7 4 ± 0.6
5.4 ± 0.4
5.2 ± 0.8
3.4 ±0.5
--
7.2
9.9
19 ± 2
± 3
1 3 ± 1.1
5.3± 1.2
--
—-
0.15 ±0.04
0.08 ±0.02
--
0.05 ± 0.09
—-
1.0
1.3 ± 0.1
3.1 ± 0.2
2.0 ± 0.2
1.2 ± 0.2
0.8± 0.1
--
—
—-
—-
--
0.04± 0.03
—-
--
1969
.
1
2
3
4
4.2 ± 0.5
1.9 ± 0.6
3.1 ± 0.7
15 ± 1
1.8 ± 1.9
3.4 ± 2.1
9.7 ± 1.7
± 3
--
--
--
0.0
0.0
0.0
LI ± u.
0.7 ± 0.1
2.1 ± 0.1
1 ± 0.7
-—
--
——
.1970
1
2
4
5 ± 1
5 ±_1_
3 ±1
13 ± 2
8 2
8 ±3
——
::
--
--
::
--
0.9 ± 0.4
0.7±0.4
::
::
1971
1972
1
4
1
3±1
-
17±2
-—
——
.
2
-------
Ye
ar
uarter*
Gross Alpha
Pc/L
Gross Beta
Pc/L
Th-Alpha
Pc/L
Pb-210
Pc/L
Sr-90
Pc/L
P0-210
Pc/L
1963
3
4
8
5
30
13
0.4
0.3
0.2
0.1
--
--
--
—-
,
I U•?
1
2
3
4
4
4
6
14
13
10
24
14
0.2
0.3
0.6
1.7
0.1
0.2
0.2
0.5
--
--
--
--
--
--
--
——
T 1
1965
4
8
::
3.2
13
::
7.3
0.1
::
0.0
0.0
::
0.2
::
-—
::
0.01
- ‘
1
2
3
4
4.4
3.3
5.3
4.7
7.2
5.1
17
6.8
0.0
0.0
0.1
0.1
0.1
0.2
0.1
0.2
--
--
--
--
0.00
0.14
0.03
0.01
I u,
1
2
3
4
1
6.2
6.1
6.2 ± 0.5
4.3 ± 0.5
7.4 ± 0.9
11
14 ± 2
±
6.0 ± 0.8
0.0
0.0
0.03 ± 0.02
0.11 ±0.02
0.02 ± 0.07
00
0.2
0.1 ± 0.1
0.0 ±0.1
0.04± 0.09
--
--
--
0.01
0.02 ± 0.01
0.00 ±0.01
0.0 ± 1.0
1968
2
3
4
3.1 ± 0.5
--
--
7.6 ± 1.2
--
--
0.07 ± 0.03
--
--
0.02± 0.09
--
--
0.01 ± 0.03
1969
1
2
3
1
3.5 ± 0.5
2.2 ± 0.7
3.1 ± 0.7
4 ± 1
8.0 ± 2.0
4.1 ± 2.1
9.8 ± 1.7
10 2
0.00 ± 0.05
0.00 ± 0.05
0.00 ± 0.05
::
0.0 ± 0.1
0.0 ± 0.1
0.1 ± 0.1
::
--
0.7 ± 0.3
0.00 ± 0.05
0.02 ± 0.04
0.01±0.04
——
1970
-
2
3
4
5 ± 1
4 ±1
--
11 ± 3
10 ±3
--
--
--
--
--
-—
1.0 ± 0.4
--
--
1971
1
4
1972
1
2
Station No.:
Location :
RMN-16
SAN JUAN RIVER DWS
MEXICAN HAT, UTAH
TABLE GB (Cont.)
GROSS ALPHA, GROSS BETA, THORIUM ALPHA, LEAD-210, STRONTIUM-90 AND POLONItJM-210
IN COLORADO RIVER BASIN SURFACE WATERs
*Quarters :
- 1 — Jan-Mar
2 - Apr-Jun
3 - Jul-Sep
4 - Oct-Dec
-------
TABLE 6R(Cont.) *Quarters :
- 1 - Jan-Mar
GROSS ALPHA, GROSS BETA, THORIUM ALPHA, LEAD 21O, STRONTIUM-90 AND POLONIUM-210 2 - Apr-Jun
IN COLORADO RIVER BASIN SURFACE WATERS 3 - Jul-Sep
Station No. : RMN-17 4 - Oct-Dec
Location : SAN MIGUEL RIVER AT
NATURITA, COLORADO
Year
.
Quarter*
Gross Alpha
Pc/L
Gross Beta
Pc/L
Th-Alpha
Pc/L
Pb-2 1 0
Pc/L
Sr-9O
Pc/L
Po-210
Pc/L
1963
3
4
2
2
7
7
0.1
0.1
0.0
0.0
--
--
--
--
•.
‘
‘
1
2
3
4
2
1
2
2
7
10
7
5
0.1
0.0
0.2
0.1
0.1
0.0
0.2
0.0
——
—-
—-
—-
-—
--
--
--
1965
1
2
4
3
1
1.3
--
.j
6
5.4
--
U.U
0.1
0.6
--
U.I
0.1
0.0
--
—-
—-
--
--
--
--
0.01
--
- 1966
1
4
%
-
1967
4
4
--
--
--
--
--
1968
4
1969
I
‘
--
±
--
0.5±0.5
1970
1
2
3
4
3.7 ± 1
3.7 ± 0.83
±0.83
3 ±1
3.7 ± 2.7
10.7 ± 2
7 ±2
5 ±3
——
--
—-
--
——
--
--
--
——
--
—-
——
--
—-
1971
1
4
4 ±1
-
7 ±2
--
-—
--
--
1972
2
-------
RMN-l8
SAN MIGUEL RIVER AT
URAVAN, COLORADO
Station No.:
Location :
TABLE 6B(COflt.)
GROSS ALPHA, GROSS BETA, THORIUM ALPHA, LEAD-210, STRONTIUM-90 AND POLONIUM-210
IN COLORADO RIVER BASIN SURFACE WATERS
*Quarters :
1 — Jan—Mar
2 - Apr-Jun
3 - Jul-Sep
4 - Oct-Dec
1’.)
Year
.
nuarter*
‘
Gross Alpha
Pc/L
Gross Beta
Pc/L
Th-A lpha
Pc/L
Pb-210
Pc/L
Sr-90
Pc/L
Po-210
Pc/L
1963
3
4
-—
--
—-
--
-—
--
——
--
--
--
—-
--
V.
1964
4
——
::
--
——
::
--
——
::
--
——
::
--
——
::
--
——
::
--
1965
•1
2
4
5
1
2.7
--
6
7
8.6
--
U.U
0.0
0.0
--
0.0
0.1
0.1
--
--
--
0.01
--
- 1966
4
.
-
1967
1
4
•
1958
I
1
2
3
4
--
--
0.1 ± 0.04
0.08 ± 0.02
0.02 ± 0.09
0.12 ± 0.09
--
--
0.04 ± 0.02
0.01 ± 0.03
1969
1
4
± 1
9 .1. 3
--
--
0.5 ± 0.6
--
1970
1
2
3
4
4.3 ± 1
4.7 ± 1
10 ±1.4
4.5±1
10.3 -‘- 3.3
15 ± 3.7
19 ±4
4 ±3.5
--
-—
--
--
--
0.2 ± 0.3
--
--
--
--
-—
--
--
1971
1
4
±1
.
8 ±3
1972
-—
1
2
-------
TABLE 68 (Cont.) *Quarters :
1 - Jan-Mar
GROSS ALPHA, GROSS BETA, THORIUM ALPHA, LEAD-210, STRONTIUM-90 AND POLONIUM-21O 2 - Apr-Jun
IN COLORADO RIVER BASIN SURFACE WATER ! 3 - Jul-Sep
Station No. : RMN-20 4 - Oct-Dec
Location : SAN MIGUEL RIVER DWS
URAVAN, COLORADO
Year
Quarter*
Gross Alpha
Pc/L
Gross Beta
Pc/L
Th-Alpha
Pc/L
Pb-210
Pc/L
Sr-9O
Pc/L
P0-210
Pc/L
• 1963
3
4
13
19
23
43
1.1
8.0
0.6
0.4
--
--
--
--
•
1964
1
2
3
4
20
12
16
27
26
33
23
20
0.8
1.0
0.1
0.1
0.?
0.1
0.3
0.3
-—
--
--
--
--
--
--
--
--
1965
-. 1966
1
2
3
4
1
2
3
4
16
4
5.1
17
20
5.5
30
40
17
10
11
12
14
• 59
35
‘4
U.4
0.2
0.1
0.1
0.2
0.4
1.5
1.0
0.0
0.1
0.1
0.2
0.3
0.1
0.1
0.0
--
--
--
——
--
--
--
- - -
--
--
0.11
0.21
0.00
0.01
0.06
0.18
1967
1968
1969
1
2
3
4
2
3
4
1
2
3
4
1
23
8.1
12 ± 1
1
48 ± 2
6.3 ± 0.7
20 ± 2
g ± 3
52 ± 3
7.9± 1.3
14 ± 1
24.7± 1.7
32 ± 2.8
16
lI
18 ± 2
±
34 ± 2
8.6 ± 2.0
19 ± 2
47 ± 7
50 ± 5
9.6± 2.8
9.1 ± 2.8
21.8± 3.3
27.5 ± 3.8
0.3
0.18
0.41 ± 0.02
o.. ± n.n
1.3 ± 0.1
0.41 ± 0.03
0.56 ± 0.06
061 ± 0 O7
0.34 ± 0.06
0.04± 0.05
0.15 ± 0.05
::
0.2
0.0
0.0 ± 0.1
ILO ± o.n
0.19 ± 0.01
0.11 ± 0.09
0.1 ± 0.1
n ± fl 1
0.3 ± 0.1
0.0 ± 0.1
0.0 ± o.i
::
0.18
0.03 ± 0.01
0.09 ± 0.02
0.17 ± 0.03
0.06 ± 0.03
0.00 ± 0.05
0.30 ± 0.05
0.12 ± 0.05
0.05± 0.04
0.02 ± 0.04
::
1970
-
2
3
4
1971
1
2
3
4
-
1972
1
2
.
-------
TABLE 6B(COflt.) * uarters :
1 — Jan—Mar
GROSS ALPHA, GROSS BETA, THORIUM ALPHA, LEAD-210, STRONTIUM-90 AND POLONIUM-210 2 - Apr-Jun
IN COLORADO RIVER BASIN SURFACE WATERS 3 - Jul-Sep
Station No. : RMN-29 4 - Oct-Dec
Location : GREEN RIVER DWS OF
GREEN RIVER, UTAH
Year
Quarter
Gross Alpha
Pc/L
Gross Beta
Pc/L
Th-Alpha
Pc/L
Pb-210
Pc/L
Sr-90
Pc/L
P0-210
Pc/L
4
1963 3
1
1964 2
3
4
3
3
14
26
::
1
3
3
-
10
12
16
--
——
—-
--
—-
——
--
2.5
3.2
4.0
--
-—
——
——
--
1965
1
2
3
4
- 1966
1
2
3
4
.
-
1967
1
2
3
4
.
1968
1
2
3
4
1969
1
2
3
4
1970
-
1
2
3
4
- 1971
1972
1
2
3
4
1
.
.
2
.
-------
TABLE GB (Cont.) *Quarters :
1 — Jan—Mar
GROSS ALPHA, GROSS BETA, THORIUM ALPHA, LEAD-210, STRONTIUM-90 AND POLONIUM-210 2 - Apr-Jun
IN COLORADO RIVER BASIN SURFACE WATERS 3 - Jul-Sep
Station No. : RMN—30 4 - Oct-Dec
Location : COLORADO RIVER AT
NORTH U.S.-MEX. BORDER
Year
‘
uarter t
‘
Gross Alpha
Pc/L
Gross Beta
Pc/L
Th-Alpha
Pc/L
Pc/L
Pc/L
Pc/L
1963
3
4
6
4
9
10
-—
--
-—
1.2
1.5
1.3
——
——
——
•_
‘
1964
1
2
4
3
4
11
18
11
10
10
22
——
——
--
--
——
-—
--
--
--
1.5
1.2
0.7
1.2
——
—-
--
—-
1965
1
2
4
4
4.6
--
1U
14
13
--
--
--
--
--
--
-—
--
1.4
1.6
--
—-
—-
--
- 1966
1
4
.
-
1967
1
4
.
1968
1
4
1969
1
4
-
3
4
8±1
3±1
13±4
10±4
--
--
--
--
-
--
1
4
.
1972
1
-------
TABLE 6B (Cont.) *Quarters .
I - Jan-Mar
GROSS ALPHA, GROSS BETA, THORIUM ALPHA, LEAD-210 , STRONTIUM-90 AND POLONIUM-210 2 - Apr-Jun
IN COLORADO RIVER BASIN SURFACE WATERS 3 - Jul-Sep
Station No. : RMN-32 4 - Oct-Dec
Location : COLORADO RIVER NEAR
BOULDER CITY, NEV.
Year
nuarter*
‘ C
Gross Alpha
Pc/I
Gross Beta
Pc/L
Th-Alpha
Pc/L
Pb-210
Pc/L
Sr-90
Pc/L
Po-2 10
Pc/I
1953
3
4
3
3
5
10
——
--
—-
-—
1.1
- .2
-—
--
‘
1964
1
2
4
4
s
8
19
12
16
--
——
--
--
-—
——
-—
--
•
1.4
1.4
1.6
--
-—
--
--
1965
1
2
4
6
7
5.9
--
11
12
12
--
——
--
--
-—
--
--
2. i
2.0
2.0
--
——
—-
--
--
1966
1
4
.
-
1967
1
4
.
1968
4
7±1
18±5
--
--
--
--
1969
1
4
7 1
16±3
--
—-
--
—-
.1970
4
1
4
.
1972
-------
RMN-33
COLORADO RIVER AT
METROPOLITAN WATER DISTRICT INTAKE,
LAI(F LIAUA II rAl —ART7
.,n.nai
Year
nuarter*
‘
Gross Alpha
Pc/L
Gross Beta
Pc/I
Th—A lpha
Pc/L
Pb-210
Pc/L
Sr-90
Pc/L
Po-2 10
Pc/L
1963
3
4
5
3
9
22
0.0
ILO
0.2
0.2
--
--
--
--
•
1964
1
2
3
4
4
4
8
4
9
11
10
15
0.1
0.2
0.1
0.2
0.1
0.0
0.6
0.3
--
--
--
--
--
--
--
--
1965
1
4
5
.. ..
--
12
--
0.0
:2
--
0.0
:1
--
--
::
--
--
::
--
- 1966
1
4
.
1967
•I
4
.
1968
1
4
-
1969
1
4
.1970
I
4
1972
I
4
1
.
Station No.:
Location :
TABLE 6R (Cont.)
GROSS ALPHA, GROSS BETA, THORIUM ALPHA, LEAD-2l , STRONTIUM-90 AND POLONItJM-210
IN COLORADO RIVER BASIN SURFACE WATERS
*Quarters :
1 - Jan-Mar
2 - Apr-Jun
3 - Jul—Sep
4 - Oct-Dec
.1
-------
Often the highest concentrations of these isotopes were measured at
station RMN-20, located downstream of Uravari, Colorado. Samples from this
station generally showed a significant increase in ct, B, and thorium-ct
activity over the upstream station (RMN 18), though the upstream station
was infrequently analyzed. A similar, though smaller increase was measured
between stations RMN 17 and 18 (Naturita to upstream of liravan). Measurements
at stations RMN 1 and 4 suggested an increase in alpha activity, but a
decrease in beta activity. Station pairs 9-10 and 15-16 appear to have shown
the same “inconsistency”.
The ratio of total beta activity to total alpha activity remains at
about 2 throughout the network. Significant exceptions are at stations
RMN 11 (Durango) and RMN 29 (Green River) where the alpha activity is low
and the ratios are about 6.
None of the radio—isotopes listed in Tables 6 and 7 was found to exceed
the recommended limit concentrations in water.
38
-------
GRAPHIC REPRESENTATIONS OF RADIUM-226 CONCENTRATIONS
( Dt OLVED) AND FLOW AT RMN STATIONS
This section consists primarily of plots of radium-226 concentrations
(dissolved) and mean monthly flows of the streams sampled. The radium
data have been plotted as monthly averages wherever samples were collected
more frequently. The flow data were obtained from U.S. Geological
Survey long-term stations and do not necessarily coincide with the
location of the Radiological Monitoring Network Stations other than as
the flow records portray high and low flows, and any long-term trends in
fi ows.
The purpose of the comparison between radium-226 concentrations and
flow is to show a generally inverse relationship that has been found in
the course of the measurements. Figure 2, for station RMN 1, serves
to show the inverse relationship between radium-226 concentrations
(dissolved) and flow. The relationships are evident at many of the other
Network stations also.
Figure 29 presents a simple statistical analysis of the radium-226
data obtained from five surface water locations in western Colorado.
The data are presented to show the changes in distribution of radium-226
concentrations as one progresses downstream from the headwaters of the
San Miguel River near Naturita, Colorado, through areas of uranium
deposits and uranium mill sites to Gateway, Colorado on the Dolores
River. The bottom family of lines represent percentages (of the total
number of measurements at a station) of measurements falling within the
specific concentration range. The upper family of lines represent the
cumulative percentage of measurements at each station. The Naturita
station (RMN 17) may be considered to measure “background” concentrations
and it is obvious that the vast majority of determinations showed less
than 0.1 pci/l Ra-226.
The next station (RMN 18) is located upstream of Uravan, Colorado
and many miles downstream of the Naturita station. An abandoned mill
site and tai1i gs pile is located at Vancorum between RMN 17 and 18.
The data shows a shift of the median radium content of the San Miguel
to in excess of 0.1 pci/i.
The third station (RMN 20) is downstream of the Union Carbide
Uranium Mill at Uravan and a significant upward shift in the median
valve is noted as the cumulative percentage line is moved to the right
and the slope of that line is decreased.
39
-------
Station RMN 21 is located on the Dolores River upstream of the
San Miguel River. Two abandoned uranium mill sites and some uranium
mines are located upstream of the station. Note that the distribution
of concentrations is considerably “degraded” from that of the Naturita
station and that a configuration is somewhat similar to that obtained
from the hlupstream_of_Uravanu station
Station RMN 26 reflects the addition of the San Miguel River to
the Dolores River and shows the effects of dillution of San Miguel water
as well as contamination by the San Miguel. Drainage from a few uranium
mines does exist between stations RMN 21 and RMN 26, but the mine
drainage has usually been of sufficiently low volume so as to be “lost”
in the Dolores River.
Figure 29 essentially portrays degradation of a river system
caused, undoubtedly, by the presence of uranium mineralization or
concentration as well as by man’s refining of uranium.
40
-------
PAGE NOT
AVAILABLE
DIGITALLY
-------
SUMMARY AND CONCLUSIONS
The Radiological Monitoring Network has collected radium—226 and
total uranium (both as “dissolved solids”) data along with less frequent
measurements of lead—210, polonium-210, thorium, strontium, total alpha,
and total beta, from 1961 to the present. The report covers over
3,000 measurements of radium-226 and total uranium from surface waters
of the Colorado River Basin (watershed). As many as twenty-seven
stations have operated with most of the locations placed upstream and
downstream of the majority of the eighteen uranium mill sites that exist
in the Basin. A recent decline in the number of active stations (to 15),
the frequency of sample collection, and the rapidity of radioassay has
diminished the worth of the network, but nonetheless the Network has
accomplished its objectives to date.
The Network serves as a spill detection and warning system downstream
of the operating mills, especially the mill at Uravan, Colorado. The
Network has quantified the impacts of uranium mills and tailings piles.
The mean background concentration of radium-226 (dissolved) in the upper
Basin is calculated to be 0.08 pci/i. The mean background concentration
of total uranium (also dissolved) in the upper Basin is about 2.1 jig/i.
Concentrations of radium as high as 26 pci/i and of uranium as high as
260 jig/i have been measured in single samples from major surface waters.
Mean annual concentrations of 3.3 pci/i Ra 226 and 33.5 pg/i were the
highest noted during the decade of sampling.
Average (monthly and annual) concentrations have decreased from
the inception Of the Network (1961) to July of 1972 in a somewhat
inconsistent (nonlinear) fashion. Noteable decreases in annual averages
have occurred for uranium on the Gunnison River (RMN 5) the Colorado
River (RMN 6, 9, 10, 30 and 31), the Animas River (RMN 12), and the
San Juan River (RMN 14, 14S and 16). Similar long-term decreases in
radium-226 are noteable only in the Colorado River near Moab, Utah
(RMN 9 and 10) and the Animas River (RMN 12). Conversely, stations
RMN 20 and 26 showed higher radium and uranium concentrations in 1968.
Average concentrations for the periods of record at each station
ranged from 0.02 pci/l Ra 226 to 1.22 pci/l Ra 226 and 1.21 jig/i Utot to
19.71 jig/i IJtot. The high concentrations occurred downstream of an
operating uranium mill.
The elevated radium and uranium concentrations persist from the
headwaters of the Colorado River system through Arizona. Combined
measurements at Page, Arizona (Lake Powell), Boulder City, Nevada
(Lake Mead), Lake Havasu, and the Northerly International Boundry (Mexico)
69
-------
show mean concentrations of 0.23 pci/i Ra 226 and 7.3 pg/lUtOt. Both
values are about three times the average background concentration found
in the headwaters of the Colorado River system. Some decreases in these
downstream values over the long term are indicated, however. Of course
some “natural” increase in concentrations is to be expected in areas of
uranium deposits.
The decrease in radioactivity in the surface waters of the Colorado
River Basin is attributed to removal of uranium tailings from water
courses, better effluent treatment by the few mills operating, and, not
the least, the decline of uranium milling activities. Increased leasing
of uranium reserves and a larger role for nuclear reactors in the energy
supply situation could reverse the decreasing trend. A new uranium mill
has been situated in Utah and there is some increase in nuclear fuel
preparation activities in Wyoming (but not in the Colorado River Basin).
The long-term measurements reveal an inverse relationship between
radium-226 concentrations in surface waters and flow at many RMN stations.
That is, high concentrations of radium-226 generally occur during periods
of low flow. The mechanism controlling the high concentrations of
dissolved radium is not understood but may involve erosion from the bed
load of streams and recharge by ground water containing a higher radium-226
content.
Quarterly measurements of gross alpha, gross beta, thorium-a, lead-210,
and polonium-210 concentrations in surface waters indicated that the
uranium extraction facilities have caused elevated concentrations in the
vicinity of the facilities but there have been insufficient data collected
to allow speculation on the fate of these radloisotopes.
Quarterly measurements of strontium-90 have indicated that significantly
high (up to 9.6 pci/i Sr-90) concentrations existed in the Basin prior to
1970 but that the strontium-90 content of the waters may have decreased
since then. Again, limited measurements of strontium-90 since 1970 make
this conclusion tentative. Strontium-90 is not associated with the uranium
or uranium milling, but is derived from nuclear detonations and is
transported by air until it is “scrubbed” to be precipitated as “fallout”.
The Network did detect higher strontium—90 concentration in the San Juan
River (“upstream of Mexican Hat, Utah”) than were generally found in the
upper Colorado River Basin (“upstream of Moab, Utah”).
70
-------
RECOMMENDATIONS
Since the RMN system has been the recent subject of discussions
regarding the amount of surface water quality monitoring that the
Environmental Protection Agency should perform or support, the following
recommendations pertaining to the future role of the Network are
offered.
1. The RMN system in the Colorado River should be maintained
to include a minimum of seventeen stations with approximately
five stations added for about one year to monitor changes in
concentrations and any increase in uranium extraction activity.
Stations upstream of Bedrock on the Dolores River and possibly
in the vicinity of the new mill at LaSal may be needed.
Stations may include ground water sampling.
2. The RMN system should be expanded to include areas of
uranium extraction, milling, and refining in Wyoming and to
include uranium milling in South Dakota.
3. The RMN system should collect composite samples (over
varying frequencies) whenever possible so as to provide true
average concentrations.
4. Radioassay of samples collected downstream of operating
mills and mines must be as fast as possible to provide detection
of spills. In situ methods of measurement must be further
evaluated.
5. In addition to radium and uranium analysis, selected samples
should be routinely analyzed for ammonia, trace” elements,
and solids. These analyses should continue until correlations
have either been derived or are not apparent.
6. An intensive effort to characterize the chemical and
physical forms of effluents from uranium mills should be
initiated to provide quantitative data on the fate of contaminants.
7. Shallow wells should be installed down-gradient of
selected uranium tailings piles and along gaining reaches of
streams to evaluate the contribution of radium-226 from these
sources.
71
-------
APPENDIX
RADIOLOGICAL MONITORING NETWORK STATION
DESCRIPTIONS, LOCATIONS (MAPS), AND
RESULTS OF RADIUM-226 (DISSOLVED) AND
TOTAL URANIUM (DISSOLVED) RADIOASSAY.
A-i
-------
APPENDIX INDEX
1.
4.
5.
6.
9.
10
11
12
13
14
1 4S
15
16
17
18
20
21
22
24
25
26
28
29
30
31
32
33
( Table )
A-i.
A—2
A—3.
A-4.
A —5
A—6
A-7.
A—8
A-9.
A—la.
A—il.
A—12.
A—13.
A-14.
A—15.
A—16.
A-17.
A—18.
A—19.
A—20.
A—21.
A—22.
A—23.
A-24.
A—25.
A-26.
A—27.
Page
A-4
A-9
A-14
A-19
A-25
A-33
A-40
A—45
A-52
A—55
A-60
A—66
A—71
A-78
A—84
A-92
A-106
A-112
A-115
A—119
A-123
A—130
A-134
A-l37
A-142
A-147
A—152
RMN Station
A-2
-------
EXPLANATION OF MATERIAL CONTAINED IN APPENDIX
The data tables for each RMN station are preceeded
of the station location and the sampling history, and a
sampling location(s). The two map symbols used are:
Present or most recent sampling location
Previous sampling location
The format on each data table is as follows:
070022
39 32 30.0 107 38 40.0
Colorado River at Silt
Colorado
09503
Ra-226
DISSOLVED
PC/ L
(parameter code)
09504
Ra-226-D
ERROR
PC/L
by a description
map showing the
(STORET number)
(lat., long.)
(site description)
22703
U-NAD
DISSOLVED
u GIL
61/11/25
(begin)
CP(T)-02 (composite in time
61/12/02 COMP
(end) (composite)
with 2 samples
0.270
(l0—l2 j/l)
composi ted)
0.020
(±1O-12 j/1)
4
Date
From
To
Time
of
Day
Depth
Feet
3.500
(10 6 gm/1)
A-3
-------
RIVER
SYSTEM
INDEX 1101001
MILES 1179.30
—
-
-
STATION DESCRIPTION 010022
39 32 30.0 107 3B 40.0 - --
(RMN—1) COLORADO RIVER AT SILT
- O8 COLORADO - --—-----————-- -— ——-—--— --
COLORADO RIVER BASIN
“(JPPER COLORADO-RIVER SUB BASIN--— —
1118C 030 2111204
—- -- - -- - 0000 FEET — -DEPTH——- - --
II - III IV V VI VII VIII IX X XI XII — — - -
• S . . S S I I
DESCRIPTION
CRAP NO. RMN—1. UMS—b, ‘ wS—9 - — -
SE1/4 ’ NE1 /4, SEC 1’I TbS, P92W
SAMPLE COLLECTED IN MAIN CHANNEL 1/2 MILE SOUTHEAST OF SILT COLO. . IN
GAWFIELU COUNTY. JU’ T UPSTREAM OF BRID(iE ON STATE ROUTE 330. ______________
TYPE OATA—r AOi SAL, ACT.
- TYPE FLOW MEAS— fl SIC, AT 090ts7600 PLUS WEST DIVIDE CREEK - - - — - — - -- - - —
SAMPLING STARTED 11/25/61 AND IS ONGOING.
- - REMARKS: RADiUM BEARING MINERAL SPRINGS ENTER THE RIVER ABOUT 20 MI. UPS -
AT GLE/4W000 SPRINGS. COLO. THIS STATION PROVIDES BACKGROUND RADIOACTIVTY
DATA ROVE URANIUM MILL 8 MILES DOWNSTREAM AT RIFLE, COLORADO-
V
S
a
Number of Samples assayed for Ra-226 through period of record (1961—1972): 130
Mean Ra-226 concentration for period of record and 20— deviation : 0.19 ± 0.16
Number of Samples assayed for IJ(total) through period of record (1962-1972): 116
Mean U(total) concentration for period of record and 2a deviation : 2.91 ± 3.00
-------
/
7
4
5583
L
fl
8
5600
-
= // /
c
/
LJ
-J
(I)
4,
mQ
LiJ 4 ,
-Jo
I-0
4 ,0
C.)
1 4
(I )
-4
-I
c-)
—I
c - f l
/
)
N
32
-------
TABLE A—i 070022
39 32 30.0 107 38 40.0
(RMN—1 ) COLORADO RiVER AT SILT
08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA-226—D U—NAT DATE TIME DEPTH RA—226 RA—226—O U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET °C/L PC/L UG/L
61/11/25 0.190 63/03/30 0.230 2.600
61/12/02 COMP 63/04/27 COMP
61/12/02 0.170 63/04/27 0.100 0.100
61/12/09 COMP 63/06/01 COMP
61/12/09 0.180 f’1/06/O1 0.130 0.800
61/12/16 COMP 63/06/29 COMP
61/12/16 0.150 63/06/29 0.200 2.300
61/12/23 COMP 6V06/O COMP
61/12/23 0.310 53/08/03 0.200 3.900
61/12/3& COMP 63/08/31 COMP
62/02/18 0.150 63/08/31 0.290 2.90u
62/02/24 COMP 63/09/23 COMP
52/02/24 0.160 63/09/28 0.250 3.000
62/03/03 COMP 63/11/02 COMP
62/03/03 0.140 63/11/02 0.290 3.400
62/03/31 COMP 63/12/07 COMP
‘ 62/03/31 0.130 63/12/07 0.340 4.400
C 62/04/28 COMP 63/12/28 COMP
62/04/28 0.040 63/12/28 0.350 3.400
62/06/03 COMP 64/02/0 1 COMP
62/06/03 0.050 64/02/01 0.390 2.700
62/06/30 COMP 64/02/29 COMP
62/06/30 0.110 64/02/29 0.340 3.200
62/07/28 COMP 64/03/28 COMP
62/07/28 0.170 64/03/28 0.180 3.500
62/09/01 COMP 64/05/02 COMP
62/09/01 0.200 64/05/02 0.110 1.500
62/09/29 COMP 64/05/30 COMP
62/09/29 0.180 3.300 64/05/30 0.080 1.200
62/11/03 COMP 64/06/27 COMP
62/11/03 0.190 3.200 64/06/27 0.150 2.700
62/12/01 COMP 64/08/01 COMP
62/12/01 0.250 3.600 64/08/01 0.190 2.200
62/12/29 COMP 64/08/29 COMP
62/12/29 0.260 3.100 64/08/29 0.240 2.900
63/02/02 COMP 64/10/03 COMP
63/02/02 0.280 3.000 64/10/03 0.270 3.500
63/03/02 COMP 64/10/31 COI4P
63/03/02 0.230 3.900 64/10/31 0.330 3.900
63/03/30 COI4P 64/11/28 COMP
-------
TABLE A—1(Cont.) 070022
39 32 30.0 107 38 40.0
(RMN—1) COLORADO RIVER AT SILT
08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
11 18C 030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA-226 RA—226-D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/L PC/L UG/L
64/11/28 0.270 4.300 66/67/30 0.240 2.600
65/01/02 COMP 66/08/26 COMP
65/01/02 0.270 3.700 66/09/03 0.220 2.700
65/01/30 COMP 66/10/01 COMP
65/01/30 0.290 3.600 66/10/01 0.250 2.900
65/02/27 COMP 66/10/29 COMP
65/02/28 0.250 3.500 66/10/29 0.270 2.900
65/04/03 COMP 66/12/03 COMP
65/04/03 0.140 3.200 66/12/03 0.290 3.200
65/05/01 COMP 66/12/30 COMP
65/05/01 0.080 1.900 66/12/30 0.280 3.200
65/05/29 COMP 67/01/28 COMP
65/05/29 0.090 2.200 67/02/04 0.250 3.100
65/07/03 COMP 67/02/25 COMP
65/07/03 0.060 2.800 67/02/25 0.200 4.000
65/07/30 COMP 67/04/01 COMP
65/07/30 0.130 1.500 67/04/01 0.150 2.200
—J 65/08/27 COMP 67/04/29 COMP
65/08/27 0.110 3.900 67/04/29 0.100 1.500
65/10/02 COMP 67/05/27 COMP
65/10/02 0.150 .200 67/05/27 0.060 1.200
65/10/29 COMP 67/07/01 COMP
65/10/29 0.180 3.600 67/07/01 0.130 1.800
65/11/27 COMP 67/07/29 COMP
65/11/27 0.180 3.000 67/07/29 0.210 2.900
66/01/02 COMP 67/09/02 COMP
66/01/02 0.210 1.900 67/09/02 0.210 3.700
66/01/29 COMP 67/09/30 COMP
66/01/29 0.180 ?.100 - 67/09/30 0.240 3.000
66/02/27 COMP 67/10/28 COMP
66/02/27 0.150 0.000 67/10/28 0.250 4.200
66/04/02 COMP 67/12/02 COI4P
66/04/02 0.140 1.900 67/12/02 0.260 3.400
66/04/30 COMP 67/12/23 COMP
66/04/30 0.080 0.700 68/01/06 0.250 3.500
66/05/27 COMP Gq/02/03 COMP
66/05/27 0.110 1.200 68/02/03 0.230 3.200
66/07/02 COMP 68/03/02 COMP
66/07/02 0.180 2.300 68/03/02 0.260 3.300
66/07/30 COMP 68/03/23 COMP
-------
TABLE A—1(Cont.)
070022
39 32 30.0 107 38 40.0
(RMN—1) COLORADO RIVER AT SILT
08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
1 118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U-NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLvED
TO DAY FEET PC/i PC/L UG IL TO DAY FEET PC/i PC/L UG/L
68/03/30 0.220 2.700 70/10/21 0.180 0.020 3.200
68/04/27 COMP 70/11/24 0.160 0.020 2.600
68/04/27 0.080 0.010 0.800 70/12/IS 0.200 0.020 1.900
68/06/01 COMP 71/01/25 0.220 0.030 2.700
68/06/01 0.050 0.010 1.900 71/02/22 0.210 0.020 1.800
68/06/29 COMP 71/03/23 0.120 0.020 2.400
s io 7 .’oi 0.130 0.020 2.700 71/04/20 0.070 0.010 3.900
6/07/29 COMP 71/05/20 0.050 0.010 1.000
6 /O8/O5 10 00 71/06/IS 0.040 0.010 0.800
CP(T)—O2 0.100 0.010 1.600 71/07/26 0.180 1.200
68/08/19 10 00 71/08/23 0.200 1.100
68/09/03 0.220 0.020 3.700 71/09/27 0.300 2.200
68/09/16 COMP 71/10/18 0.200 2.400
68/09/30 0.230 0.020 4.900 71/11/29 0.200 4.500
58/10/28 COMP 71/12/13 0.300 14.000
fR/fl/ 3 0.210 0.020 5.000 72/01/29 0.200 1.900
CO 8/I1/25 COMP 72/02/22 0.100 2.800
68/12/09 O.2ô0 0.020 5.300 72/03/20 0.200 1.900
69/01/13 0.270 0.030 4.300 72/05/15 0.200 3.300
69/02/10 0.230 - 0.020 3.200 72/06/19 0.100K
69/03/10 0.260 0.020 3.400
69/04/07 0.140 0.020 4.200
59/05/05 3.060 0.010 2.400
9/06/O9 0.060 0.010 1.300
69/07/07 0.100 0.010 2.600
69/08/27 0.190 0.020 3.400
69/09/25 0.200 0.020 4.000
69/10/28 0.160 0.020 3.300
69/11/21 0.210 0.020 3.900
69/12/23 0.150 0.020 4.700
70/01/27 0.450 0.040 4.400
73/02/25 0.150 0.020 3.400
70/03/24 0.210 0.020 3.600
70/04/22 0.140 0.020 3.100
70/05/22 0.060 0.010 1.400
70/06/24 0.020 0.010 1.000
70/07/28 0.120 0.020 4.200
70/08/26 0.150 0.020 2.000
70/09/23 o.1S0 0.020 2.800
-------
STATION DESCRIPTION 392145.0 108 08 50.0 - -
COLORADO RIV AT DEHEQUE
(RMN—4) 08 cOLORADO - - - - -
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
1118C 030 2111204
- 2 0000 FEET--DEPTpi-
IVFR
SYSTEM II II IV V VI VI I VIII I X X XI XII
INDEX 1101001
MILES 1138.9b . - - —. -- - - —
DESCRIPT ION
CRRP NO. RtIN—4, BWS—12. UPIS—7
SEI/ , Nw1i’. , SLC 7. 1 S, R9bW
SAMPLE O AT DE bE’ UE MUNICIPAL wATER SUPPLY INFILLTRAT1ON GALLERY IN
MESA COUNTY UNTIL 01/69; NOW SAMPLED 3.8M1 NORTHEAST. UPS, OF DE BEQUE—-
T’fPE DATA—RAD. S L
0 TYPE FLOW MEAS—wTM STG REC AT 0909J700 - - - -
SAMPLING STARTED 1I/12Th1 AND IS Ou I1 OiN6.
REMARI S: THE UNION CARBIBE CORP. NILL AT RIFLE RELEASES LIQUID WASTES - -
FROMJ ITS S€EPAGI. EV ’ORATI0N LAGOONS TO RiVER JON!. UPSTREAM. A SECOND
URAN IUM MILL AT RIFLL, CLOSED 194b,-CONTRIBUTES LITTLE RADIOACTIVITY.
U
Number of Samples assayed for Ra—226 through period of record (1961—1972); 130
Mean Ra-226 concentration for period of record and 2o— deviation ; 0.17 Q,12
Number of Samples assayed for U(total) through period of record (1962—1972); 115
Mean U(total) concentration for period of record and 2o— deviation : 3.60 t 2.92
-------
‘I )
-1
-I
‘-4
0
-I
0
.
/
( , _ f
I
/
77
_
t4’
( ,//J)(((’ / I .
/ç r /
/1 /
\ p
Re iç / BR
/ I / ___
/
I y
)
± / sg t
/
iEU: D 932 /
/1IT
5’44
‘—I
0
‘L
U I
.;- T:
-------
TABLE A—2 070023
39 21 45.0 108 08 50.0
(RMN—4) COLORADO RIVER AT DEBEQUE
08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
1118C030 2111204
u9503 09504 22703 2 0000 FEET DEPTH
DATE TIME DEPTH RA—226 RA—226-D U—NAT 09503 09504 22703
FPOM OF DISOLvED ERROR DISOLVED DATE TIME DEPTH RA—226 RA—226—D U—NAT
10 DAY FEET PC/I PC/I U6/L FROM OF DISOLVED ERROR DISOLVED
61/11/12 0.230 TO DAY FEET PC/I PC/L UG/L
61/11/18 COMP 63/03/03 0.240 5.100
61/11/18 0.190 63/03/30 COMP
61/11/25 co , 1P 63/03/30 0.200 3.200
51/11/25 0.170 63/04/27 COMP
61/12/02 COMP 63/04/27 0.160 0.400
62/02/04 0.150 63/06/01 COMP
6?/03/03 COMP 63/06/01 0.150 0.700
62/02/18 0.150 63/06/29 COMP
62/02/24 COMP 63/06/29 0.240 2.500
6/03/03 0.140 63/08/03 COMP
62/03/31 COMP 63/08/03 0.160 3.300
62/03/31 0.100 63/08/31 COMP
62/04/28 COMP 63/08/31 0.150 3.600
62/04/28 0.090 63/09/28 COMP
62/06/03 cOMP 63/09/28 0.210 4.200
62/36/03 0.050 63/11/02 COMP
62/06/30 COMP 63/11/02 0.240 4.200
62/06/30 0.090 63/12/07 COMP
62/07/28 COMP 63/12/07 0.300 5.500
62/07/28 0.170 63/12/28 COMP
62/09/01 cot .ip 63/12/28 0.260 4.500
62/09/01 0.180 64/02/01 COMP
62/09/08 COMP 64/02/01 0.310 4.500
62/09/08 0.240 64/02/29 COMP
62/09/15 COMP 64/02/29 0.290 4.400
62/09/15 0.190 64/03/28 COMP
62/09/22 COMP 64/03/28 0.240 2.900
62/09/22 0.230 64/05/02 COMP
62/09/29 COMP 64/05/02 0.150 1.800
62/09/29 0.150 6.500 4/05/30 COMP
6/11/03 COMP 64/05/30 0.080 1.300
62/11/03 0.190 4.500 64/06/27 COMP
62/12/01 COMP 64/06/27 0.140 2.900
62/12/01 0.260 4.200 64/08/01 COMP
62/12/29 COMP 64/08/01 o.iso 3.200
62/12/29 0.440 4.300 64/08/29 COMP
63/02/02 COMP 64/08/29 0.200 3.700
63/02/02 0.240 4.400 64/10/03 COMP
63/03/02 COMP 64/10/03 0.250 4.600
64/10/31 COMP
-------
TABLE A-2(Cont.) 070023
39 21 45.0 108 08 50.0
COLORADO RIVER AT DEBEQUE
08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
U18C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA-226—D U—NAT
FPOM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLvED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/L PC/L UG/L
64/10/31 0.250 7.200 66/07/01 0.160 4.000
64/11/28 COMP 66/07/30 COMP
64/11/28 0.280 5.800 66/07/30 0.200 3.400
65/01/02 COMP 66/09/03 COMP -
65/01/02 0.250 5.300 66/09/03 0.220 2.600
65/01/30 COMP 66/10/01 COMP
65/01/30 0.250 4.900 66/10/01 0.210 3.300
65/02/27 COMP 66/10/29 COMP
65/02/28 0.240 3.500 66/10/29 0.230 3.300
65/04/03 COMP 66/12/03 COMP
65/04/03 0.160 2.900 66/12/03 0.230 4.300
65/05/01 COMP 66/12/30 COMP
65/05/01 0.090 1.900 66/12/30 0.250 4.400
5/05/29 COMP 67/01/28 COMP
65/05/29 0.130 2.200 67/02/04 0.210 5.900
65/07/03 COMP 67/02/25 COMP
R 65/07/03 0.060 3.000 67/02/25 0.230 4.000
65/07/30 COMP 67/04/0 1 COMP
65/07/30 0.140 2.300 67/04/01 0.180 2.600
65/08/28 COMP 67/04/29 COMP
65/08/28 0.150 4.600 67/04/29 0.130 1.900
65/10/02 COMP 67/06/03 COMP
65/10/02 0.130 4.000 67/06/03 0.080 1.400
65/10/30 CaMP 67/07/01 COMP
65/10/30 0.200 2.300 67/07/01 0.140 2.200
65/11/27 COMP 67/07/29 COP4P
65/11/27 0.190 2.500 67/07/29 0.200 4.100
66/01/02 COMP 67/09/02 COMP
66/01/02 0.200 4.700 67/09/02 0.210 5.000
66/01/29 COMP 67/09/30 COMP
66/01/29 0.200 2.900 67/09/30 0.210 5.800
66/02/27 COMP 67/10/28 COMP
66/02/27 0.140 0.600 67/10/28 0.220 5.800
66/04/02 COMP 67/12/02 COMP
66/04/02 0.140 2.600 67/12/02 0.240 6.000
66/04/30 COMP 67/12/30 cOMP
66/04/30 0.090 0.700 67/12/30 0.250 5.500
66/05/27 COMP 68/02/03 COMP
66/05/27 0.120 2.000 68/02/03 0.230 4. 00
66/07/02 COMP 68/03/02 COMP
-------
TABLE A-2(Cont.) 070023
39 21 45.0 108 08 50.0
(RMN—4 COLORADO RIVER AT DEBEQUE
/ 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLvED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/i. PC/L UG/L
68/03/02 0.220 4.700 70/10/23 0.110 0.020 4.200
69/03/23 COMP 70/11/24 0.120 0.020 2.600
68/03/30 0.190 3.700 70/12/18 0.120 0.020 2.500
63/04/21 COMP 71/01/29 0.140 0.020 3.500
68/04/27 0.120 1.500 71/02/24 0.110 0.020 2.900
68/06/01 COMP 71/03/23 0.120 0.020 3.000
68/06/01 0.060 0.010 2.500 71/04/20 0.210 0.020 1.800
68/06/28 COMP 71/05/17 0.080 0.010 1.000
68/07/01 0.120 0.020 2.900 71/06/17 0.050 0.010 0.100
68/07/29 COMP 71/07/30 0.160 2.000
68/08/05 0.120 0.010 1.700 71/08/25 0.200 2.100
68/08/19 COHP 71/09/30 0.200 2.900
68/09/03 0.190 0.020 3.700 71/10/20 0.200 4.100
68/09/16 COMP 71/12/15 0.200 4.800
‘ 69/09/30 0.220 0.020 5.400 72/01/27 0.200 3.300
68/10/28 COMP 72/02/16 0.200 2.200
‘ ‘ 63/11/13 0.210 0.020 6.600 72/03/22 - 0.200 3.500
69/11/25 COMP 72/04/17 0.200 1.800
68/12/09 0.170 0.020 6.100 72/05/17 0.200 3.300
69/01/13 0.180 0.020 5.000 72/06/21 0.100K 3.300
69/02/10 0.170 0.020 4.300 -
69/03/10 0.170 0.020 4.800
69/04/07 0.160 0.020 5.300
69/05/05 0.090 0.010 2.400
69/06/09 0.060 0.010 2.000
69/07/07 0.080 0.010 4.300
69/08/27 0.150 0.020 4.100
69/09/25 0.130 0.020 5.000
69/10/28 0.140 0.020 3.900
69/11/21 0.170 0.020 5.000
69/12/23 0.140 0.020 5.000
7C/O1/27 0.120 0.020 4.900
70102/11 0.140 0.020 5.400
70/03/24 0.140 0.020 4.200
70/04/22 0.130 0.020 3.900
70/06/04 0.040 0.010 2.100
70/07/28 0.120 0.020 4.700
70/09/11 0.130 0.020 4.300
70/10/06 0.100 0.020 3.200
-------
070002
STATION DESCRIPTION 39 02 45.0 108 34 30.0
GUNNISON RIVER AT GRAND JUNCTION
08 COLORADO
(RMN-5) COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
RIVER
SYSTEM II III IV V VI VII VIII I X X XI XII
INDEX 1101001 012680
MILES 1101.80 0001.20 . . . . . . . .
DESCRIPTION
CRBP NO. PMN—5, USGS—09—152500, BWS—14
NWI/4 , NE1/4, SEC 27, T1Se P1W
SAMPLED AT COUNTY ROAD BRIDGE 1.2 MILES UPSTREAM FROM THE MOUTH OF
THE GUNNISON RIVER IN MESA COUNTY.
- TYPE DATA—PAD, BACT. GRAB, 3 PINTS/WEEK
TYPE FLOW MEAS—WTR 516 REC AT 09152500
SAMPLING STARTED 4/16/62 AND DISCONTINUED 05/19/72
REMARKS: A URANIUM MILL. CLOSED IN 1962, IS LOCATED 150M1. UPSTREAM BUT
DOES NOT CONTRIBUTE ANY RADIOACTIVITY. THE MILL HAD NO DIRECT WASTE
DISCHARGES DURING OPERATION. NATURAL PICX—UP FROM GUNNISON TO STATION
Number of Samples assayed for Ra—226 through period of record (1961—1972): 103
Mean Ra-226 concentration for period of record and 20— deviation : 0.09 0.10
Number of Samples assayed for U(total) through period of record(1962—l97 2 ): 94
Mean U(total) concentration for period of record and 20- deviation : 9.57 8.49
-------
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-------
TABLE A—3 070002
39 02 45.0 108 34 30.0
GUNNISON RIVER AT GRAND JUNCTION
(RMN-5) 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
11l8C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—O U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM .OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/L PC/L UG/L
62/04/16 0.040 53/’ 9/02 0.190 17.000
62/04/28 COMP 63IC9/27 COMP
62/04/30 0.070 63/09/30 0.120 15.000
62/06/02 COMP 63/11/01 COMP
62/06/04 0.040 63/11/04 0.040 13.000
62/06/30 COMP 63/11/29 COMP
62/07/02 0.040 63/12/02 0.100 14.000
62/07/28 COMP 6 /12/27 COMP
62/07/30 0.090 /I2/3o 0.080 12.000
62/09/01 COMP 6(,/01/31 COP4P
62/09/03 0.100 64/02/03 0.080 11.000
62/09/08 COMP 64/02/28 COMP
62/09/10 0.100 64/03/02 0.080 12.000
62/09/15 COMP 64/03/27 COMP
62/09/17 0.100 66/03/30 0.100 4.400
62/09/22 COMP b’+/O5/01 COMP
62/09/24 0.080 64/05/04 0.090
62/09/29 COMP 64/05/29 COMP
62/10/01 0.050 12.000 64/06/01 0.290 4.000
62/11/03 COMP 64/06/26 COMP
62/11/05 0.040 13.000 64/06/29 0.160 8.900
62/12/01 COMP 64/07/31 COMP
62/12/03 0.070 13.000 64/08/03 0.150 10.000
62/12/29 COMP 64/08/28 COMP
62/12/31 0.040 13.000 64/08/31 0.10 14.000
63/02/02 COMP 64/10/02 COMP
63/02/04 0.010 10.000 64/10/04 0.110 000
63/03/02 COMP 64/10/30 COMP
63/03/30 0.080 10.000 64/11/02 0.090 17.000
63/03/30 COMP 64/11/27 COI4P
63/04/01 0.090 4.700 64/11/30 0.100 14.000
63/04/27 COMP 65/01/01 COMP
63/04/29 0.u60 2.900 65/01/04 0.110 13.000
63/06/01 COMP 65/01/29 COMP
63/06/01 0.080 0.700 65/02/01 0.090 11.000
63/06/29 COMP 65/02/26 CaMP
63/07/01 0.290 12.000 65/03/01 0.060 9.400
63/08/02 COMP 65/04/02 COMP
63/08/05 0.190 14.000 65/04/05 0.090 4.000
63/08/30 COMP 65/04/30 COMP
-------
070002
TABLE A—3 (Cant) 39 02 45.0 108 34 30.0
GUNNISON RIVER AT GRAND JUNCTION
08 COLORADO
(RMN—5) COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM oF DISOLVED ERROR DISOLVED
TO DAY FEET PC/i PC/L UG/L TO DAY FEET PC/i PC/I. UG/I.
65/05/03 - - 0.060 2.6Qo 67/01/02 0.040 15.000
65/05/28 COMP 67/01/27 COMP
65/05/31 0.080 4.600 67/01/30 0.090 11.000
65/07/02 COMP 67/02/24 COMP
65/07/05 0.090 3.600 67/02/27 0.060 9.100
65/07/30 COMP 67/03/31 COMP
65/08/02 0.040 6.900 67/04/03 0.080 5.400
65/08/27 COMP 67/04/28 COMP
65/08/30 0.040 9.700 67/05/01 0.060 4.800
65/10/0 1 COMP 67/05/26 COMP
65/10/04 0.030 12.000 67/05/29 0.080 7,000
65/10/29 COMP 67/06/30 COMP
65/11/01 0.040 15.000 67/07/03 0.120 14.000
65/11/26 COMP 67/07/28 COMP
65/11/29 0.090 12.000 67/07/31 0.150 13,000
65/12/31 COMP 67/09/01 COMP
‘ ‘ 66/01/03 0.080 18.000 67/09/04 10 00
66/01/28 COMP CP(T)—12 0.090 13.000
66/01/31 0.050 14.000 67/09/29 10 00
66/02/25 COMP 67/10/02 10 00
66/02/28 0.050 9.000 CP(T)—12 0.070 0.010 15.000
66/04/01 COMP 67/10/27 10 00
66/04/04 0.080 4.400 67/10/30 10 00
66/04/29 COMP CP(T)—12 0.080 0.010 7.900
66/05/02 0.060 5.300 67/12/01 10 00
66/05/27 COMP 67/12/04 10 00
66/05/30 0.100 7.600 cpn—12 0.060 0.010 5.600
66/07/01 COMP 67/12/29 10 00
66/07/04 0.100 12.000 68/01/01 10 00
66/07/29 COMP CP(T)—12 0.080 0.010 10.000
66/08/01 0.190 14.000 68/02/02 10 00
66/09/12 COMP 68/02/05 10 00
66/09/05 0.120 14.000 CP(T)—12 0.040 0.010 7.700
66/09/30 COMP 68/03/0 1 10 00
66/10/03 0.110 14.000 68/03/04 10 00
66/10/28 COMP CP(T)—04 0.040 0.010 11.000
66/10/31 0.050 5.400 68/03/29 10 00
66/12/02 COMP 68/04/01 10 00
66/12/05 0.080 12.000 CP(T)—04 0.050 0.010 6.800
66/12/30 COMP 68/04/26 10 00
-------
TABLE A-3 (Cont.) 070002
39 02 45.0 108 34 30.0
(RMN-5’I OUNNISON RIVER AT GRAND JUNCTION
08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR OISOt.VED
TO DAY FEET PC/L PC/L UG/L
68/04/29 10 00 -
CP(T)— 0.050 0.010 3.400
69/05/31 10 00
68/06/03 10 00
CP(T)—12 0.040 0.010 5.100
68/06/28 10 00
68/07/03 0.160 0.020 14.000
68/07/31 COMP
68/08/07 10 00
CP(T)—03 0.170 0.030 10.000
68/08/21 10 00
68/09/05 0.090 0.010 15.000
68/09/18 COMP
68/10/02 0.100 0.100 14.000
68/10/16 COMP
68/11/15 0.090 0.010 8.900
68/11/27 COMP
68/12/13 0.080 0.010 7.300
69/01/16 0.060 0.010 8.100
69/02/13 0.040 0.010 15.000
69/03/13 0.040 0.010 6.200
69/04/10 0.070 0.010 4.900
69/05/08 0.070 0.010 4.300
69/06/12 0.050 0.010 7.200
69/07/22 0.150 0.020 9.800
69/08/29 0.080 0.010 13.000
69/11/25 0.040 0.010 8.600
70/02/09 0.040 0.010 6.600
70/05/18 0.050 0.010 2.800
70/08/24 0.070 0.010 9.500
70/11/25 0.040 0.010 6.100
71/02/26 0.040 0.010 3.600
71/05/17 0.070 0.010 3.900
71/08/27 0.200 12.000
71/12/03 0.200 3.600
72/02/16 0.100K 7.200
72/05/19 0.100 5.9 oo
-------
r
STATION DESCRIPTION 070038
19 10 00.0 lOb 57 25.0
Iniii , COLORAUO RIVER NEAR FRUITA
l IJ QJ -- Ob COLORADO
COLORADO RIVER BASIN
UPPER COLOi ADO RIVER SUb BASIN
1118C030 2111204
- - - 2 0000 FEET DEPTH -
RIVER
SYSTt M II 111 IV V VI VII VIII I X X XI XII
INDEX 1101001
- -MILES 1091.10 • . • . . • • - - . . -- . - . — —
DESCRIPT ION
- CPi3P NO. RMN—6e UMS 2
SE1/4, SE1/4 , SEC 23, TiOS, R104W
SAMPLED 1MI OUTH OF FRUITA AT COLD. HWY 340 BRIObE UNTIL 07/69; NOW
S4MPLEO 7.2 HILtS UI’STREAM FROM COLORADO—UTAH STATE LINE AT 09163500 - -—-- -- - — — — -
TYPE DATA—RAD. SAL; GRAB, .3 PINTS/WEEK
TYPE FLOW MEAS—WTR 510 REC AT 091b3500 -
(.0 SAMPLING STARTED ‘./1b/b AND IS ONGOING
REMARKS: THE. CLIMAX URANIUM MILL AT G’ AND JUNCTION, CLOSED IN 1970,
‘ RELEASED SMALL AMOUNTS oF RADIOACTIVITY IN A MIXED LABORATORY—VANADIUM
- - PROCdSS LIQUID WASTE EFFLUENT. TilE MILL WAS uPSTRE.AM OF SAMPLING SITES -
a
a
Number of Samples assayed for R —226 throu9h period of record (1961—1972): U ’
1ean Ra-226 concentration for period of record and 20— deviation : 0.16 0.14
Number of Samples assayed for U(total) through period of record (1962-1972): 102
Mean U(total) concentration for period of record and 20- deviation : 7.88 ± 6.00
-------
18
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4642 —, 1
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-------
STATION LOCATION
T7
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— ----—-— N ) (I ’
‘--‘I
? “ I i
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(RMr1-6)
-------
TABLE A-4 070038
39 10 00.0 108 57 25.0
COLORADO RIVER NEAR FRUITA
(RMN —6) 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA-226 RA—226—O U-NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
10 DAY FEET PC/L PC/L UG/L TO DAY FEET PC/L PC/L UG/L.
62/0’.I16 0.120 63/09/02 0.360 14.000
62/04/23 COMP 63/09/27 COMP
62/04/30 0.130 63/09/30 0.330 14.000
62/06/02 COMP 63/11/01 COMP
62/06/04 0.090 63/11/04 0.180 11.000
62/C.6/30 COMP 63/11/29 COMP
62/07/02 0.200 63/12/02 0.210 13.000
62/07/28 COMP 63/12/27 COMP -
62/07/30 0.210 63/12130 0.180 10.000
62/09/01 COMP 64/01/31 COMP -
62/09/03 0.260 64/02/03 0.190 9.200
62/09/08 COI4P 4/02/28 COMP
62/09/10 0.190 64/03/02 0.200 7.600
2/09/15 COMP 64/03/27 COMP
62/09/11 0.210 64/03/30 0.100 10.000
62/09/22 COMP 64/05/0 1 COP4P
62/09/24 0.180 64/05/04 0.200 5.700
62/09/29 COMP 64/05/29 COMP
62/10/01 0.140 8.500 / 6/01 0.160 3.200
62/11/03 COMP s.’ 0 /26 COMP
62/11/05 0.180 8.500 8 ./C6/ 9 0.180 8.900
62/12/01 COMP 64/07/31 COPIP
62/12/03 0.180 10.000 64/08/03 0.150 8.800
62/12/29 COMP 64/08/28 COMP
62/12/31 0.180 9.900 6 ./3S/31 o.ico 13.000
63/02/02 COMP / ‘ /02 COMP
63/02/04 0.130 9.500 64/10/05 0.180 14.000
63/03/02 COMP 6 /1o/3o COMP
63/03/05 0.180 8.100 6 ./11/02 0.230 12.000
63/03/30 COMP 64/11/27 COMP
63/04/01 0.140 6.200 64/11/30 0.180 14.000
63/04/27 COMP a /01/01 COMP
63/04/29 0.110 4.000 /01/04 0.230 11.000
63/06/0 1 COMP (5/01/29 COMP
63/06/03 0.140 4.700 65/02/01 0.210 9.100
63/06/29 COMP 65/02/26 COMP
63/07/01 0.300 12.000 65/03/01 0.230 9.400
63/08/02 COMP 65/04/02 COMP
63/08/05 0.240 12.000 65/04/05 0.150 4.600
63/08/30 COMP 65/04/30 COMP
-------
TABLE A-4 (Cont.) 070038
39 10 00.0 108 57 25.0
COLORADO RIVER NEAR FRUITA
(RMN-6) 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U-NAT DATE TIME DEPTH PA—226 RA—226—D U-NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLV ERROR DISOLvED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/L PC/L UG/L
65/05/03 0.090 2.000 67/01/02 0.160 9.500
65/05/28 COMP 67/01/27 COMP
65/05/31 0.110 3.300 67/01/30 0.160 9.000
65/07/02 COMP 67/02/24 COMP
65/07/05 0.090 3.000 67/02/27 0.160 8.000
65/07/30 COMP 67/03/31 COMP
65/08/02 0.130 Ô.400 67/04/03 0.120 6.200
65/08/27 COMP 67/04/28 COMP
65/08/30 0.130 9.300 67/05/01 0.180 5.200
65/10/01 COMP 67/05/26 COMP
65/10/04 0.140 19.000 67/05/29 Ø, Q 3.900
65/10/29 COMP 67/06/30 COMP
65/11/01 0.120 7.800 67/07/03 0.220 7.100
65/11/26 COMP 67/07/28 CO 4P
65/11/29 0.390 8.100 67/07/31 0.280 11.000
65/12/31 COMP 67/09/01 COMP
66/01/03 0.160 7.100 67/09/04 0.150 11.000
66/01/28 COMP 67/09/29 COMP
66/02/02 0.120 6.000 67/10/02 0.170 14.000
66/02/25 COMP 67/10/27 COMP
66/02/28 0.150 5.600 67/10/30 0.160 9.100
66/04/01 COMP 67/12/01 COMP
66/04/04 0.110 4.700 67/12/04 0.130 7.300
66/04/30 COMP 67/12/29 COMP
66/05/02 0.120 3.900 68/01/01 0.140 7.500
66/05/27 COMP 63/02/02 COMP
66/05/30 0.150 5.000 68/02/05 0.130 8.100
66/07/01 COMP 68/03/01 COMP
66/07/04 0.200 7.400 68/03/04 0.160 7.900
66/07/29 COMP 68/03/29 COMP
66/08/01 0.190 9.800 68/04/01 0.150 6.600
66/09/02 COMP 68/04/26 COMP
66/09/05 0.160 11.000 68/04/29 0.220 0.020 4.300
66/09/30 COMP 63/05/31 COMP
66/10/03 0.160 12.000 68/06/03 0.090 0.010 3.900
66/10/28 COMP 68/06/28 COMP
66/10/31 0.180 1. 0 00 68/07/03 0.130 0.020 7.200
66/12/02 COMP 63/07/31 COMP
66/12/05 0.160 9.400 68/08/07 10 00
66/12/30 COMP CP(T)—03 0.160 0.020 5.800
68/08/21 10 00
-------
TABLE A-4 (Cont.) 070038
39 10 00.0 108 57 2S.0
1 RMN—6’ COLORADO RIVER NEAR FRUITA
/ 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA-226 RA—226—O U-NAT
FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L
68/09/05 0.130 0.020 11.000
68/09/18 COMP
65/10/02 0.140 0.020 13.000
68/10/16 COMP
68/11/15 0.130 0.020 9.100
68/11/27 COMP -
69/12/13 0.140 0.020 8.700
69/01/16 0.130 0.020 7.600
69/02/13 0.160 0.020 8.800
69/03/13 0.090 0.010 6.900
69/04/10 0.080 0.010 6.500
69/05/08 0.080 0.010 3.703
69/06/12 0.090 0.010 4.600
69/07/10 0.100 0.010 6.300
69/08/13 0.130 - 0.020 10.000
69/09/10 0.110 0.020 12.000
ro 69/10/07 0.090 0.010 9.200
69/11/19 0.090 0.010 - 7.700
69/12/29 0.150 0.020 8.200
70/01/20 0.090 0.020 7.800
70/02/10 0.100 - 0.020 7.700
70/03/11 0.110 0.020 6.200
70/04/09 0.110 - 0.020 6.300
70/05/05 0.110 0.020 5.700
70/08/14 0.090 0.010 8.200
70/11/11 0.090 0.020 6.100
70/11/17 0.500 0.040 3.000
70/11/18 0.450 0.040 5.600
71/02/10 0.070 0.010 4.000
71/06/02 0.090 0.020 2.200
71/09/13 0.200 6.100
71/11/16 0.100 K 1.700
72/02/15 0.100 4.100
72/05/30 0.200 5.400
-------
STATiON DESCRIPTION 49 010
3b 3b 30.0 109 34 45.0 --
(RMN—9) COLO R AT HIWY 160 NORTH OF MOAB
49 UTAH - -
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
11 18C030 2111204
- - 0000 FEET PEPTH --
RIVER
SYSTEM I! III IV V VI VII VIII I X X XI XII -
INDEX 1101001
MILES 0995.10 . - . . . . . .
L)ESCRIPTION
S CRAP NO. RMN—9, UMS -43, hwS—23 -
NWII4, SFC 26, T2SS. 21E
SAMPLED COLLECTEt) IN MAIN CHANNEL 1/2 MILE UPSTREAM FROM ATLAS
MINLRALS URANIUM MILL AT HWY ibO t RIOGE IN GRAND COUNTY. -
TYPE L)ATA—RALi, S. L. ACT; GMAH, 3 PINIS/wEE c
SAMPLING STAkTEO 12/11/61 AND iS ONGOING -
MEM4I - KS: fl-uS STATIUu a PROvIOES bACIcGROUND DATA FOR THE COLO. RIVER
UPSTREAM FROM THE O ’LRATING URANIUM MILL NEAR MOAH, UTAH. STREAM FLOW -
MUST 3E COMPUTED FO’ THIS STATION.
TY E FLOW MEAS—Wik sr& RIC AT 09180b00 NEA’ CISCO, UTAH - -
Number of Samples assayed for Ra—226 through period of record (1961—19Z2): 187
Mean Ra—226 concentration for period of record and 2o deviation : 0.23 ± 0.26
Number of Samples assayed for U(total) through period of record (1962—1972): 171
Mean U(total) concentration for period of record and 2o— deviation : 8.47 ±7•1t7
-------
7
27
‘tAILINGS
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to
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- o-_i e
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-v 7 U . - - --
Sewagea J
Dkposa• ‘f 1
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— — - -— - — — - - -- - grt1 I ll
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\ \ ( T • Disposal M 0 A B
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(BM4030)
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STATION LOCATIONS
(RMN-9 ;RMN-1O)
. \CflK
r c 1
p4-26
-------
FORMER STATION LOCATION
A-27 (RMN-1O)
-------
TABLE A-5 490010
38 36 30.0 109 34 45.0
COLO R AT HIWY 160 NORTH OF MOAB
(RMN-9) 49 UTAH
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—O U-NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UGh TO DAY FEET PC/i PC/L UG/L
61/12/11 0.340 62/11/19 0.190 9.500
61/12/30 COMP 62/11/24 COMP
62/01/01 0.380 62/11/26 0.160 11.000
62/01/27 COMP 62/12/01 COMP
62/01/29 0.300 62/12/03 0.200 9.800
62/03/03 COMP 62/12/08 COMP
62/03/05 0.280 62/12/10 0.190 11.000
62/03/31 COMP 62/12/15 COMP -
62/04/02 0.250 62/12/17 0.180 10.000
62/04/28 COMP 62/12/22 COMP
62/04/30 0.160 62/12/24 0.290 12.000
62/06/02 COMP 62/12/29 COMP
62/06/04 0.200 62/12/31 0.290 10.000
62/06/30 COMP 63/01/05 COMP
62107/02 0.260 63/01/07 0.210 10.000
62/07/28 COMP 63/01/12 COMP
‘ 62/07/31 0.360 63/01/14 0.380 14.000
62/09/01 COMP 63/01/19 COMP
62/09/03 0.430 63/01/21 0.380 14.000
62/09/08 COMP 63/01/26 COMP
62/09/10 0.310 63/01/28 0.500 31.000
VC9/15 COMP 63/02/02 COMP
62/09/17 0.160 63/02/04 0,200 11.000
62/09/22 COMP 63/02/09 COMP
€2/oc/24 0.340 63/02/11 0.240 11.000
62/09/29 COIIP 62/02/16 COMP
62/10/01 0.190 10.000 63/02/18 0.230 12.000
6€’/ l O/Oô COMP 63/02/23 COMP
62/10/08 0.160 9.500 63/02/25 0.200 11.000
F’2/10/13 COMP 63/03/02 COMP
62/10/15 0.250 9.000 63/03/04 0.240 11.000
62/10/20 COMP 63/03/09 COMP
62/10/22 0.280 8.700 63/03/11 0.210 10.000
62/10/27 COMP 63/03/16 COMP
62/10/29 0.200 9.200 63/03/18 0.300 15.000
2/11/O3 COMP 63/03/23 COMP
6 2 /11/05 0.130 8.900 63/03/25 0.340 13.000
62/11/10 COMP 63/03/30 COMP
62/11/12 0.100 11.000 63/04/01 0.310 5.300
62/11/17 COMP 63/04/06 COMP
-------
TABLE A—5 (Cont.) 490010
38 36 30.0 109 34 45.0
IDMP.I o\ Cob R AT HIWY 160 NORTH OF MOAB
49 UTAH
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U-NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLvED ERROR DISOLVED FROM OF DISOLVEQ ERROR DISOLVED
TO DAY FEET PC/L PC/b UG/L 10 DAY FEET PC/L PC/L UG/L.
63/06/08 0.250 6.400 64/03/02 0.240 13.000
63/04/13 COMP 64/03/27 COMP
63/04/15 0.260 6.200 64/03/30 0.300 9.700
63/04/20 COMP 64/C5/01 COMP
63/04/22 0.350 8.100 64/05/04 0.240 5.600
63/04/27 COMP 64/05/29 COMP
63/04/29 0.340 14.000 64/06/01 0.190 3.600
63/05/04 COMP 64/06/26 COMP -
63/05/06 0.260 8.200 64/06/29 0.240 7.800
63/05/11 COMP 64/07/31 - COMP
3/O5/13 0.210 7.000 64/08/03 0.270 12.000
63/05/18 COMP 54/08/28 COMP
63/05/20 0.200 7.400 64/08/31 0.230 9.600
63/05/25 COMP 64/10/02 COP4P
63/05/27 0.230 7.500 64/10/05 0.200 14.000
63/0 /O1 COMP 64/10/30 COMP
63/06/03 0.240 4.100 64/11/02 0.180 15.000
63/06/08 COMP 64/11/27 COMP
63/06/10 0.260 4.700 64/11/30 0.240 14.000
63/06/15 COMP 65/01/01 COMP
63/06/17 0.210 4.700 65/01/04 0.190 11.000
63/06/22 COMP 65/01/29 COMP
63/06/24 0.260 5.400 65/02/01 0.250 11.000
63/06/29 COMP - 65/02/26 COMP
63/07/01 0.480 14.000 65/03/01 0.210 11.000
63/08/03 COMP 65/04/02 COMP
63/08/05 0.400 17.000 65/04/05 0.200 7.200
63/08/30 COMP 65/04/30 COMP
63/09/02 0.250 14.000 65/05/03 0.180 2.600
63/09/27 COMP 65/05/28 COMP
63/09/30 - 0.330 14.000 65/05/31 0.130 3.600
63/11/01 COMP 65/07/02 COtIP
63/11/04 0.280 11.000 65/07/05 0.160 3.600
63/11/29 COP’IP 65/07/30 COMP
63/12/02 0.290 16.000 65/08/02 0.140 6.400
63/12/27 COMP 65/08/27 COMP
63/12/30 0.500 12.000 65/08/30 0.200 9.700
64/01/31 COMP 65/10/01 COMP
64/02/03 0.350 11.000 65/10/04 0.140 11.000
64/02/28 COMP 65/10/29 COMP
-------
490010
TABLE A—5 (Cant.) 38 36 30.0 109 34 45.0
COLD R AT HIWY 160 NORTH OF MOAB
(RMN-9) 49 UTAH
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
11 18C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIHE DEPTH RA-226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FPOM OF DISOLVED ERROR DISOLVED FROM OF DISOLvEO ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/L PC/L UG/L
65/)1/01 0.200 8.900 67/07/03 0.510 8.500
65/11/26 COMP 67/07/29 COMP
65/11/29 0.300 8.000 67/07/31 0.290 12.000
65/12/31 COMP 67/09/01 COMP
6S/C1/03 0.360 8.500 67/09/04 0.200 13.000
66/01/28 COMP 67/09/29 COMP
66/01/31 0.240 6.200 67/10/02 0.170 14.000
66/02/25 COMP 67/10/27 COMP
66/02/28 0.240 4.800 67/10/30 0.400 11.000
66/04/01 COMP 67/12/01 COMP
66/04/04 0.190 4.500 67/12/04 0.320 8.700
66/04/29 COMP 67/12/29 COMP
66/05/02 0.190 2.400 68/01/01 0.310 9.300
66/05/27 COMP 68/02/02 COMP
66/05/30 - 0.220 5.100 68/02/05 0.250 9.100
66/07/0 1 COMP 68/03/0 1 COMP
(-h’ 66/07/04 0.330 11.000 68/03/04 0.240 10.000
66/07/29 COMP 68/03/29 COMP
66/08/01 0.370 13.000 68/04/01 0.420 8.800
66/09/02 COMP 68/04/26 COMP
66/09/05 0.240 12.000 68/04/29 0.210 4.900
66/09/30 COMP 68/05/31 COMP
66/10/03 0.250 12.000 68/06/03 0.200 0.020 2.000
66/10/28 COMP 68/06/28 COMP
66/10/31 0.210 11.000 68/07/01 10 00
66/12/02 COMP CP(T)—06 0.260 0.030 6.000
66/12/05 0.210 11.000 68/08/02 10 00
66/12/29 COMP 68/08/05 0.280 0.030 8.000
67/01/02 0.300 11.000 68/08/30 COMP
67/01/27 COMP 68/09/02 0.220 0.020 14.000
67/01/30 0.250 11.000 68/09/27 COMP
67/02/24 COMP 68/09/30 0.160 0.020 12.000
67/02/27 0.230 9.000 68/11/01 COMP
67/03/31 COMP 68/11/04 0.160 0.020 7.900
67/04/03 0.200 6.400 68/11/29 COMP
67/04/28 COMP 68/12/02 0.190 0.020 9.600
67/05/01 0.250 6.900 68/12/27 COMP
67/05/26 COMP 68/12/30 0.160 0.020 8.300
67/05/29 0.170 3.800 69/01/31 COMP
67/06/30 COMP 69/02/03 0.170 0.020 9.300
69/02/28 COMP
-------
TABLE A-S (Cont.) 490010
38 36 30.0 109 34 45.0
(DM I O’t COLO R AT HIWY 160 NORTH OF MOAB
.I IIJ1— , 49 UTAH
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
11 18C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226-D U-.’ AT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED F OM OF DISOLVED ERROR DISOLVED
TO DAY FEET .PC/L PC/L UGh TO DAY FEET PC/L PC/L UG/L
69/03/03 0.190 0.020 7.400 71/02/02 0.090 0.020 3.800
69/03/28 COMP 71/02/24 COMP
9’D3/31 0,390 0.020 5.600 71/03/01 0.170 0.020 4.500
6 #’O5/02 COMP 71/03/29 COMP
E’ /0 3/O5 0.110 0.010 4.300 71/04/05 0.100 0.020 4,900
COMP 71/04/30 COMP
69/06/C2 0.130 0.020 4.800 71/05/07 0.100 0.020 3.200
69/o6/a7 COMP 71/05/24 COMP
69/09/22 0.340 0.030 16.000 71/06/01 0.090 0.020 1.900
9/10/O9 0.140 0.020 71/06/29 COMP
?/10/27 COMP 71/07/09 0.190 4.000
69/10/14 0.130 0.020 8.000 71/07/30 COMP
69/10/28 COMP 71/08/02 0.100K 4.600
69/11/04 0.150 0.020 7.400 71/08/16 COMP
69/11/20 COMP 71/09/07 0.100K 9.300
69/12/12 0.150 0.020 7.700 71/10/01 COMP
(.*) 70/01/02 COMP 71/10/08 0.200 6.900
70/01/22 0.200 0.020 7.400 71/10/13 1.300 5.900
7o/ 02/e2 0.150 0.020 8.600 71/10/21 0.200 7.500
70/03/20 0.090 0.020 6.400 71/11/02 0,200 12.000
70/04/22 0.260 0.030 6.000 71/11/09 0.200 10.000
70/04/27 COMP 71/11/12 0.600 6.900
70/05/07 0.170 0.020 4.900 71/11/17 0.100 5.900
70/05/25 COMP 71/11/19 0.100 7.200
70/06/03 0.090 0.010 2.400 71/11/24 0.100 9.300
70/06/18 COMP 71/12/08 1.000 8.900
70/07/02 0.110 0.020 5.000 71/12/15 0.200 8.200
70/07/23 COMP 71/12/20 0.200 7.200
70/08/07 0.220 0.020 7.100 71/12/28 0.300 8.900
70/08/27 COMP 72/01/06 0.200 - 4.600
70/09/03 0.150 0.020 6.500 72/01/14 0.200 9.300
70/10/02 COMP 72/01/17 0.100 9.700
70/10/09 0.130 0.020 7.300 72/01/27 0.200 4.300
70/10/27 COMP 72/02/01 0.100 5.900
70/11/02 0.100 0.020 6.300 - 72/02/07 0.100 4.100
70/11/24 COMP 72/02/17 0.200 5.900
70/12/&2 0.110 0.020 5.600 72/02/25 0.200 10.000
70/12/29 COMP 72/02/28 0.100 2.100
71/01/04 0.160 0.020 5.100 72/03/09 0.200 6.600
71/01/25 COMP
-------
TABLE A—5 (Cont.) 490010
38 36 30.0 109 34 45.0
(RMN—9) COLO R AT HIWY 160 NORTH OF I4OAB
- 49 UTAH
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIIe
1 118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L
72/03/16 0.100 3.900
72/03/22 0.200 5.000
72/03/29 0.100 9.700
72/04/03 o.iooic 5.200
72/04/13 0.200 7.200
72/04/20 0.100 1.900
72/04/28 0.200 6.400
72/05/05 0.200 7.500
72/05/12 O.100I( 5.900
72/05/16 0.300 6.400
72/06/09 0.200
72/06/16 0.300 4.400
72/06/20 0.200
72/06/30 0.200 6.100
-------
STATION DESCRIPTiON 490009
3B 14 4b.0 109 34 50.0
(RMN 10) COLORADO RIVER DWS OF MOAB
— -. 49UTAH -
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
111 C03O 2111204
2 - 0000 FEET;DEPTII
RIVER
SYSTEM II III IV V Vi - VII Viii I X X - XI X II - - -
INDEX 1101001
-MILESO99O.60----. . . . - . . .- .----.—-- .- ..-------.----—---—---—-———--——----
DESCRIPT ION
S -- CRHP NO. RMN—1O, tiW —24 -
NE1/4, NE I/4, SEC 3. T26S, 1421E
a -- ——_
SA4PLED 6141. DOW’ STREAM FROM HWY 160 BRIDGE NW OF MOAB UNTIL 07/69.
- NOW SAMPLED 1000FT UPSTREAM OF MILL Ct tEI(, SAMPLE TAKEN FROM WEST BANK- — ---——
TYPE DATA—RAL); Gr Ab, 3 PINTS/WEEK
— —
SAMPLIN(, EbAN 1 /11/61 ANt) IS ONGOINu - -—
REP. AWKS: T 1E ATLAS MLNERAL URANIUM MILL 5 1/2 MiLES UPSTREAM DISCHARGES
LIQUID EFFLUENT AFTEI TREATIN( IT WITH BARIUM CHLORIDE TO REMOVE RADIUM--
22h.
- - T rPE FLOW MEA5—WTr STG REC AT- 09180500 NEAR CISCO. -UTAH - - - —
V
Number of Samples assayed for Ra-22.6 through period of record (1961-1972); 189
Mean Ra-226 concentration for period of record and 2o deviation ; 0 37 144
Number of Samples assayed for U(total) through period of record (1962-19Th): 275
Mean U(total) concentration for period of record and 2a’ deviation : 10.32 ± 7.78
-------
SEE PREVIOUS FIGURE FOR
SAMPLING LOCATION
RMN-1O
A- 34
-------
TABLE A-6 490009
38 34 45.0 109 34 50.0
DMM in COLORADO RIVER OWS OF MOAB
49 UTAH
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U-NAT DATE TIME DEPTH RA—226 RA—226—D U-NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLvED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/L PC/I. UG/L
61/12/11 0.400 62/12/17 0.360 12.000
61/12/30 COMP 62/12/22 COMP
62/01/01 0.470 62/12/24 0.450 18.000
62/01/27 COMP 62/12/29 COMP
62/01/29 0.350 62/12/31 0.400 16.OOQ,
62/03/03 COMP 63/01/05 COMP
62/03/05 - 0.330 63/01/07 0.330 16.e OO
62/03/31 COMP 63/01/12 COMP
62/04/02 0.290 63/01/14 0.400 14.000
62/04/28 COMP 63/01/19 COMP
62/04/30 0.240 63/01/21 0.400 12.000
62/06/02 COMP 63/01/26 COMP
62/06/04 0.180 63/01/28 0.380 22.000
62/06/30 COMP 63/02/02 COMP
6 /07/02 0.340 63/02/04 0.360 12.000
62/07/28 COMP 63/02/09 COMP
(71 62/07/30 0.490 63/02/11 0.280 12.000
62/09/01 COMP 63/02/16 COMP
62/09/03 O.31Q 63/02/18 0.180 13.000
62/09/08 COMP 63/02/23 COMP -
62/09/10 0.430 63/02/25 0.300 13.000
62/09/15 COMP 63/03/02 COMP
62/09/17 0.330 63/03/04 0.210 15.ood
62/09/22 OMP 63/03/09 COMe
62/09/24 0.210 63/03/11 0.290 14.000
62/09/29 COMP 63/03/16 COMP
62/10/01 0.210 9.000 63/03/18 0.330 15.000
62/11/03 COMP 63/03/23 COMP
2/1l/0S 0.330 11.000 - 63/03/25 0.380 12.000
62/11/10 COMP 63/03/30 COMP
2/1t/12 0.300 11.000 63/04/01 0.290 5.400
62/11/17 COMP 63/04/06 COMP
62/11/19 0.300 12.000 63/04/08 0.360 7.000
62/11/24 COMP 63/04/13 COMP
62/11/26 0.280 12.000 63/04/15 0.780 8.900
ô2/12/01 COMP 63/04/20 COMP
62/12/03 0.280 10.000 63/04/22 7.210 20.000
62/12/Oa COMP 63/04/27 COMP
62/12/10 0.300 12.QOO 63/04/29 0.380 13.000
62/12/15 COMP 63/05/04 COMP
-------
TABLE A—6 (Cont.) 490009
38 34 45.0 109 34 50.0
COLORADO RIVER OWS OF MOAB
(RMN_1O) 49 UTAH
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED Fpo i OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/L PC/L UG/L
63/05/06 0,300 12.000 64/06/29 0.270 8.500
63/05/11 COMP 64/07/31 COMP
63/05/13 0.190 7.800 64/08/03 0.270 8.600
63/05/18 COMP 64/08/28 COMP
63/05/20 0.230 6.900 64/08/31 0.280 16.000
63/05/25 COMP 64/10/01 COMP
63/05/27 0.240 7.300 64/10/05 0.290 18.000
63/06/01 COMP 64/10/30 COMP
63/06/03 0.230 3.900 64/11/02 0.330 17.000
63/06/08 COMP 64/11/27 COMP
63/06/10 0.300 5.400 64/11/30 0.270 16.000
63/06/15 COMP 65/01/01 COMP
63/06/17 0.300 5.700 65/01/04 0.290 14.000
63/06/22 COMP 65/01/29 COMP
63/06/24 0.310 6.800 65/02/01 0.280 14.000
63/06/29 COMP 65/02/26 COMP
C. .) 63/07/01 0.510 12.000 65/03/01 0.320 13.000
63/08/03 COMP 65/04/02 COP4P
63/08/05 0.360 17.000 65/04/05 0.290 8.100
63/08/30 COMP 65/04/30 COMP
63/09/02 0.260 14.000 65/05/03 0.320 3.000
63/09/27 COMP 65/05/28 COMP
63/09/30 0.290 16.000 65/05/31 0.190 3.400
63/11/01 COMP 65/07/02 COMP
63/11/04 0.240 12.000 65/07/05 0.160 4.700
63/11/29 COMP 65/07/30 COMP
63/12/02 0.280 16.000 65/08/02 0.220 7.200
63/12/27 COMP 65/08/27 COMP
63/12/30 0.680 12.000 65/08/30 0.230 12.000
64/01/31 COMP 65/10/01 COMP
64/02/03 0.340 13.000 65/10/04 0.160 11.000
64/02/28 COMP 65/10/29 COMP
64/03/02 0.280 13.000 65/11/01 0.330 14.000
64/03/27 COMP 65/11/26 COMP
64/03/30 0.280 9.700 65/11/29 0.410 9.100
64/05/O k COMP 65/12/31 COMP
64/05/04 0.230 5.600 66/01/03 0.270 11.000
64/05/29 COMP 66/01/28 COMP
64/06/01 0.230 3.700 66/01/31 0.310 12.000
64/06/26 COMP 66/02/25 COMP
-------
TABLE A-6 (CowL)
490009
38 34 45.0 109 34 50.0
COLORADO RIVER OWS OF MOAB
49 UTAH
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503
RA—226
DISOLvED
PC/L
(RMN-1o’
09503
09504
22703
i
DATE
FROM
TO
66/02/28
66/04/01
66/04/04
66/04/29
66/05/02
66/05/27
66/05/30
66/07/01
66/07/04
66/07/29
66/08/01
66/09/02
66/09/05
66/09/30
66/10/03
66/10/28
65/10/31
66/12/02
66/12/05
66/12/29
67/01/02
67/01/27
67/01/30
67/02/24
67/02/27
67/03/31
67/04/03
67/04/28
67/05/01
67/05/26
67/05/28
67/06/30
67/07/03
67/07/28
67/07/31
67/09/01
67/09/04
67/09/29
67/10/02
67/10/27
TIME DEPTH
OF
DAY FEET
COMP
COMP
COMP
COMP
COMP
COMP
COMP
COMP
COMP
COMP
COMP
COMP
COMP
COI4P
COMP
COMP
COMP
COMP
COMP
COMP
PA—226
DISOLVED
PC/L
0.220
0.220
0.180
0.200
0.290
0.640
0.270
0.270
0.230
1.470
2.940
1.180
0.970
0.470
0.390
0.250
0.320
0.310
1.090
0.940
RA—226—D
ERROR
PC/L
U—NAT
DISOLVED
UG/L
5.500
6.300
3.100
4.800
12.000
13.000
12.000
15.000
13.000
15.000
16.000
14.000
12.000
8.500
8.400
4.300
7.200
14.000
18.000
18.000
.
DATE
FROM
TO
67/10/30
67/12/01
67/12/04
67/12129
68/01/01
68/02/02
68/02/05
68/03/01
68/03/04
1 ,8/03/29
68/04/01
68/04/26
68/04/29
68/05/31
68/06/03
68/06/28
68/07/01
CP(T)—06
68/08/02
68/08/05
68/08/30
68/09/02
68/09/27
68/09/30
68/11/01
68/11/04
68/11/29
68/11/18
68/11/20
68/11/22
68/11/24
68/1 .1/27
68/11/29
68/12/02
68/12/23
68/12/25
68/12/27
68/12/30
69/01/31
69/02/03
69/02/28
TIME DEPTH
OF
DAY FEET
COMP
COMP
COMP
.
COMP
COMP
COMP
COMP
COMP
10 00
10 00
COMP
COMP
COMP
COMP
.
COMP
COMP
COMP
0.970
1.080
0.710
0.560
1.270
0.410
0.370
0.370
0.300
0.250
0.350
0.300
0.230
0.180
0.390
0.460
0.340
0.170
0.150
0.240
0.250
0.240
0.190
0.220
09504 22703
RA—226—D U-NAT
ERROR DISOLVED
PC/L UG/L
14. 000
11.000
10.000
10.000
12.000
11. 000
6.000
0.030 2.200
0.030 8.800
0.020 8.200
0.030 15.000
14.000
0.030 13.000
0 • 030
0.0 70
0.0 70
- 0.030
0.0 30
0.030
0.040
0.0 30
0.0 30
0.020
0 • 020
11. 000
13. 000
13. 0 00
14. 000
13.000
9.400
8.500
8.900
7 • oo
9.500
-------
TABLE A-6 (Cont.) 490009
38 34 45.0 109 34 50.0
COLORADO RIVER DWS OF MOAB
(RMN—lo) 49 UTAH
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TINE DEPTH RA—226 RA—226—O U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLvED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/L PC/L UG/L
69/03/03 0.240 0.030 8.100 71/03/01 0.200 0.020 6.100
69/03/28 COMP 71/03/29 COMP
69/03/31 0.200 0.020 5.800 71/04/05 0.120 0.020 7.000
69/05/02 COMP 71/04/30 COMP
69/05/05 0.130 0.020 4.200 71/05/07 0.120 0.020 4.300
69/05/30 COMP 71/05/24 COMP
69/06/02 0.140 O.C20 5.600 71/06/01 0.100 0.020 3.300
69/06/2T COMP 71/06/29 COMP
69/09/22 0.290 0.030 17.000 71/07/09 0.330 4.000
69/10/14 0.210 0.020 10.000 71/07/30 COMP
69/10/28 COMP 71/08/02 0.300 4.600
69/11/04 0.150 0.020 12.000 71/08/16 COMP -
69/11/20 COMP 71/09/07 0.300 9.300
69/12/12 0.210 0.030 16.000 71/10/01 COMP
70/01/02 COMP 71/10/08 0.500 8.500
70/01/22 0.220 0.020 11.000 71/10/13 0.100 13.000
70/02/02 0.230 0.030 -, 12.000 71/10/21 0.300 14.000
70/03/20 0.160 0.020 6.900 71/11/02 0.200 12.000
70/04/22 0.120 0.020 9.300 71/11/09 0.200 10.000
70/04/27 COMP 71/11/17 0.100K 11.000
70/05/07 0.150 0.020 6.400 71/11/30 0.200 11.000
70/05/25 COMP - 71/12/08 0.100 13.000
70/06/03 0.140 0.020 7.500 71/12/15 0.300 - 15.000
70/06/13 COMP 71/12/20 0.300 10.000
70/07/02 0.190 0.030 7.900 71/12/28 0.200 2.200
70/07/23 COMP 72/01/06 0.300 12.000
70/08/07 0.270 0.030 11.000 72/01/14 0.300 - 5.900
70/08/27 COMP 72/01/17 0.200 6.900
70/09/03 0.200 0.020 11.000. 72/01/27 0.100K 8.500
70/10/02 COMP 72/02/01 0.200 13.000
70/10/09 0.200 0.020 9.700 72/02/07 0.200 9.300
70/10/27 COMP 72/02/17 0.200 8.500
70/11/02 0.160 0.020 11.000 72/02/25 0.300 10.000
70/11/24 COMP 72/02/28 0.300 6.600
70/12/02 0.150 0.020 10.000 72/03/09 0.200 4.500
70/12/29 COMP 72/03/16 0.300 6.100
71/01/04 0.220 0.020 12.000 72/03/22 0.300 10.200
71/01/25 COMP 72/03/29 0.400 10.200
71/02/02 0.180 0.020 7.800 72/04/03 0.300 8.200
71/02/24 COMP
-------
0
TABLE A-6 (Cont,) 490009
38 34 45.0 109 34 50.0
/ COLORADO RIVER OWS OF MOAB
RMN-1O, , 49 UTAH
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U-NAT
FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L
72/04/13 0.200 9.300
72/04/20 0.200 11.000
72/04/28 0.300 7.500
72/05/05 0.300 11.000
72/05/12 0.300 9.300
72/05/16 0.300 7,500
72/05/22 0.300 - 3.300
72/06/09 0.200 4.600
72/06/16 0.200 6.100
72/08/20 0.200 6.400
72/06/30 0.300 .100
-------
070004
37 16 45.0 107 52 47.0
STATION DESCRIPTION ANIMAS RIVER AT DURANGO
FflftARI COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
RIVER
SYSTEM II Ifl IV V VI VII VIII IX X XI XII
INDEX 1101001 009420 02370
MILES 0789.60 0249.00 058.20 . . . . . . . .
DESCRIPTION
CRBP NO. RMN—11, BWS—57 , USGSO9—361500
SW1/4. SW1/4, SEC 20, T35N, R9W
(1) SAMPLED UPSTREAM H Y 789 BRIDGE IN DURANGO UNTIL 09/69 THEN SAMPLED
DWS (2) 1/4 MI., 09/69—07/72. (3) SAMPLED DWS STP 1F2MI. 07/72—
SAMPLED AT SITE (2)&(3) 03/73
0 TYPE DATA—RAD; GRAB, 1 GAL/WEEK
TYPE FLOW MEAS—WTR STG REC AT 09361500
SAMPLING STARTED 7/17/61 AND IS ONGOING
REMARKS: THIS STATION PROVIDES BACKGROUND RADIOACTIVITY DATA FOR THE
ANIMAS RIVER. PRIOR TO 7/1/64 THE SAMPLE WAS GRAB. 3 PINTS/WEEK
Number of Samples assayed for Ra-226 through period of record (1961—1972): 104
Mean Ra-226 concentration for period of record and 20— deviation : 0.05 ± 0.04
Number of Samples assayed for U(total) through period of record (1962—1972): 98
Mean U(total) concentration for period of record and 2o- deviation : 1.39 ± 1.54
-------
2 / t; - I
I i — / I I Rad 0 lowe 0 // ___/A
lççH L
1 / / I / 6 ‘5
/ 0 - f- :7 _ 49 //-
- — - - Lc) S L_i. /1 -
Q / m 66/2
,\ 1 vHi I, c - --‘ -, - —
) , _J _ f I - _ , r b9C5 ._- -———
: I1 \ - -.. . - -
- _ 1 I
H //
j — . - I I I i in ,1/ I
65? ‘ Theate i i
a I / /
\ < I -
\ I /
I / I - i_ / / / / I
‘ TAIC1 GS - / -
— I I i -
- : ____
STATION LOCATION
(RMN—1 1) A—41
-------
TABLE A-7 070004
37 16 45.0 107 52 47.0
(RMN 11) ANIHAS RIVER AT DURANGO
- 08 COLORADO
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT OATE TIME DEPTH RA-226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOL.VEO
TO DAY FEET PC/I PC/I UG/L TO DAY FEET PC/L PC/L UG/L
61/07/17 0.060 63/12/02 0.040 1.500
61/07/22 COt4P 63/12/27 COMP
61/07/24 0.060 64/01/03 0.040 1.000
61/07/31 COMP 64/01/31 COMP
61/07/31 0.050 64/02/03 0.060 1.300
61/08/05 COMP 64/02/07 COMP
61/08/21 0.060 64/02/14 0.040 1.000
61/08/28 COMP 64/02/21 COMP
61/08/28 0.050 64/02/24 0.070 0.900
61/09/04 COMP 64/02/28 COMP
61/09/02 0.060 64/03/09 0.030 0.100
61/09/09 COMP 64/03/13 COMP
62/10/01 0.060 1.000 64/03/16 0.050 0.700
62/10/30 COMP 64/03/27 COMP
‘ 62/11/05 0.030 1.800 64/03/30 0.050 0.900
- 62/11/30 COMP 64/05/01 COMP
62/12/03 0.060 0.600 64/05/04 0.040 0.600
62/12/28 COMP 64/05/29 COMP
62/12/31 0.050 1.200 64/06/13 0.050 0.700
63/02/0 1 COMP 64/06/26 COMP
63/02/04 0.080 2.100 64/06/28 0.040 0.700
63/02/27 COMP 64/07/30 COMP
63/03/06 0.080 1.200 64/08/03 0.080 0.900
63/03/29 COMP 64/08/28 COMP
63/04/01 0.06fl 0.200 64/08/31 0.050 1.400
63/04/26 COMP 64/10/02 COMP
63/04/29 0.040 2.500 64/10/09 0.000 1.900
63/05/31 COI4P 64/10/30 COMP
63/06/03 0.060 0.900 64/11/06 0.060 1.900
63/06/28 COI4P 64/11/25 COMP
63/07/01 0.110 1.500 64/12/04 0.060 1.900
63/08/03 COMP 64/12/31 COMP
63/08/05 0.060 0.500 65/01/08 0.040 1.200
63/08/30 COMP 65/01/29 COMP
63/09/04 0.040 1.000 65/02/05 0.040 1.000
63/09/27 COMP 65/02/26 COMP
63/09/30 0.050 0.800 65/03/05 0.050 1.400
63/11/01 COMP 65/04/06 COMP
63/11/04 0.040 1.100 65/04/09 0.060 1.400
63/11/27 COMP 65/04/30 COMP
-------
TABLE A-7 (Cont.) 070004
37 16 45.0 107 52 47.0
ANIIIAS RIVER AT DURANGO
(RMN-11) 08 COLORADO
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U-NAT DATE TIME DEPTH RA— 26 RA—226—D U—NAT
FROM OF DISOCvED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/ I. PC/L UG/L TO DAY FEET PC/i. PC/L UGh.
65/05/07 - 0.040 0.900 67/04/07 Ô.050 1.500
65/05/28 COP4P 67/05/03 - COMP
65/06/04 0.080 1.500 67/05/08 0.030 0.700
65/07/02 COt4P 67/05/26 COI4
65/07/09 0.010 2.000 67/06/02 - 0.040 0.600
65/07/30 COMP 67/06/30 COMP
65/08/06 0.030 1.400 67/07/07 0.030 0.800
65/08/20 COMP 67/07/28 - COMP
65/09/03 0.050 2.200 67/oa,o4 0.050 1.600
65/10/01 COMP 67/09/01 COMP
65/10/08 0.050 2.100 67/09/01 10 00
65/10/29 COMP CPU—04 0.060 0.010 1.400
65/11/05 - 0.040 0.600 67/09/30 10 00
65/11/26 COMP 67/10/23 10 00
65/12/03 0.040 1.800 CP(T)—03 0.060 0.010 2.100
‘ 65/12/31 COMP 67/11/13 10 00
66/01/07 0.030 1.100 67/11/20 10 00
66/01/28 COMP CP(T)—04 0.040 0.010 2.300
66/02/04 0.040 1.000 67/12/04 10 00
66/02/25 COMP 67/12/08 10 00
66/03/04 0.040 1.300 CP(T)—06 0.040 0.010 - 1.700
66/04/01 COMP 67/12/23 10 00
66/04/08 0.030 1.100 68/01/05 10 00
66/04/29 COMP CP —O4 0.050 0.010 1.200
66/05/06 0.030 0.600 68/02/02 tO 00
66/05/27 COMP 68/02/16 10 00
66/06/03 0.050 1.300 CP(T)—02 0.050 0.010 1.400
66/07/01 COMP 68/03/01 10 00
66/07/01 0.050 0.300 68/03/08 10 00
66/08/05 0.080 - 1.400- cP —04 0.050 0.010 1.200
66/09/02 COMP 68/03/29 10 00
66/09/01 0.060 0.800 68/04/01 10 00
66/10/01 0.060 2.900 CPIT)—04 0.040 0.010 1.100
66/11/01 0.050 1.100 68/04/30 10 00
66/12/01 0.050 - 0.700 68/05/10 10 00
67/01/01 0.050 1.400 CP(T)—02 - 0.070 0.010 1.400
67/02/06 0.050 1.200 68/05/17 10 00
67/02/24 COMP 68/06/07 10 00
67/03/03 0.040 - 2.000 CPITI—03 0.030 0.010 0.300
67/03/31 COMP 68/06/21 10 00
-------
TABLE A—7 (Cont ) 070004
37 16 45.0 107 52 47.0
ANIMAS RiVER AT DURANGO
(RMN-11) 08 COLORADO
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA-226—D U-NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FI OM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/L PC/L U&/L
68/07/OS 0.060 0.010 1.500 71/09/01 0.100K 0.700
68/08/02 COMP 71/12/07 0.100 1.200
68/08/09 10 00 72/03/03 0.100K 1.300
CP(T)—04 0.050 0.010 0.600 72/06/02 0.100 0.400
68/08/30 10 00
68/09/05 0.030 0.010 2.000
63/09/27 COMP
68/10/04 0.040 0.010 3.100
68/11/01 COMP
68/11/08 0.040 0.010 3.200
68/11/27 COMP
68/12/06 0.040 0.010 2.200
68/12/13 COMP
69/01/03 0.080 0.010 2.800
69/01/31 COMP
69/Q2/14 0.040 0.010 2.200
69/02/28 COMP
69/03/07 0.080 0.010 3.400
69/0 3/28 COMP
69/04/04 0.040 0.010 2.300
69/04/24 COMP
69/05/30 0.030 0.010 1.900
69/06/13 0.020 0.000 1.200
69/06/27 COMP
69/07/11 0.050 0.010 3.100
69/08/01 COMP
69/08/08 0.050 0.010 1.100
69/08/28 COMP
69/09/04 0.050 0.010 2.oO
69/09/26 COMP
69/12/18 0.050 0.010 3.000
70/01/01 0.060 0.010 4.200
70/03/31 COMP
70/03/30 0.050 0.010 1.700
70/05/12 COMP
70/09/10 0.140 0.020 0.800
70/12/07 0.050 0.010 0.600
71/03/04 0.040 0.010 0.600
71/05/14 0.040 0.010 0.700
-------
340000
STATION DESCRIPTION 02 17.0 107 52 25.0
ANIMAS RIVER NEAR CEDAR HILL
,, 08 COLORADO
COLORADO RIVER 8ASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111206
2 0000 FEET DEPTH
RI VER
SYSTEM II III IV V VI VII VIII IX X XI XII
INDEX 1101001 009420 02370
MILES 0789.60 0249.00 034.40 . . . . . . . .
DESCRIPTION
CRRP NO. RMN—12, B S—b5, USGS—09—363500
NWI/4, NW1/4 , SEC 7. T32N, R9W
SAMPLED AT US 550 BRIDGE NEAR CEDAR HILL, N. HEX. UNTIL 07/69. THEN
SAMPLED 2.SMI. FROM COLO—N,MEX. SThTE LINE, 8.5P4ILES NORTH OF CEDAR HILL
IN COLORADO. TYPE DATA—RAD, BACT; GRAB, 3 PINTS/WEEK.
TYPE FLOW MEAS—WTR STG REC AT 09363500
SAMPLING STARTED 1/19/61 AND ENDED 8/17/71.
REMARKS; THE VANADIUM CORP OF AMERICA URANIUM MILL, 14M1. UPSTREAM AT
DURANGO. COLO. RELEASED RADIOACTIVITY BEARING WASTES INTO RIVER UNTIL
CLOSING IN 1963. PRIOR TO 7/1/64 SAMPLE WAS AUTOMATIC 1 GAL/WEEK.
Number of Samples assayed for Ra—226 through period of record (1961—19Z2): 1L,5
Mean Ra—226 concet tration for period of record and 2o- deviation : 0.21±O.k3
Number of Samp’es assayed for U(total) through period of record (1962—1972): 103
Mean U(total) concentration for period of record and 2o deviation : 2.99 ± 5.01
-------
FORMER STATION LOCATION
(RMN-12)
,
? f k
?
ç
c.
11
‘I -
\1
t
: i $ /
, ( , ‘
2 &J
2
- #— — -i 1
=-
-
t::T i
(
- ‘
, ( L
• i
• - L - q
; • ? t 1
tt -;
- ‘ ! ‘ ,
/ L 1
3 1 t±
-, •,
z =
==
:
:“ - :
SO
A-46
-------
104
10”
‘02
ET
0
4101
0100
4099
)7° 52’
247
STATION LOCATION
50’ 248
1 320 OC
A-47
(RMN-12)
-------
TABLE A-8 340000
37 02 17.0 107 52 25.0
(RMN 12) ANIMAS RIVER NEAR CEDAR HILL
— 35 NEW MEXICO
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH PA—226 RA—226—D U—NAT 09503 09504 22703
FROM OF’ DISOLVEO ERROR DISOLVED DATE TIME DEPTH RA—226 RA—226—D U—NAT
TO DAY FEET PC/L PC/L (JG/L FROM OF DISOLVED ERROR DISOLVED
61/01/19 0.730 TO DAY FEET PC/I,. PC/L UG/L
61/01/25 COMP 61/12/18 0.420
61/01/25 0.990 61/12/26 COMP
61/01/31 cor p 61/12/26 0.450
61/01/31 0.800 62/01/02 COMP
61/02/07 co i p 62/01/02 0.370
61/02/07 0.760 62/01/08 COP4P
61/02/14 COMP 62/01/08 0.320
61/02/14 0.490 62/01/15 COMP
61/02/21 COMP 62/01/15 0.450
61/07/24 0.240 62/01/22 COMP
61/07/31 co, p 62/01/22 0.420
61/09/11 0.190 62/01/29 COMP
61/09/18 COMP 62/01/29 0.420
61/09/18 0.120 62/02/05 COMP
‘ 61/09/25 COMP 62/02/05 0.320
- 61/09/25 0.130 62/02/12 COMP
61/10/02 COMP 62/02/12 0.330
61/10/02 0.160 62/02/19 COMP
61/10/09 COMP 62/02/19 0.350
61/10/09 0.170 62/02/26 COt4P
61/10/16 COMP 62/02/26 0.500
61/10/16 0.190 62/03/05 COMP
61/10/23 COMP 62/03/12 0.110
61/10/23 0.240 62/03/17 COMP
61/10/30 COMP 62/03/26 0.380
61/10/30 0.210 62/04/02 COMP -
61/11/06 COMP - 62 O4/0 2 0.330
61/11/06 0.230 62/04/28 COMP
61/11/13 CO uP 62/04/30 0.240
61/11/13 0.260 62/06/02 COMP
61/11/20 COuP 62/06/04 0.140
61/11/20 0.250 62F07/02 COMP
61/11/27 COuP 62/07/02 0.190
61/11/27 0.250 62/07/30 COMP
61/12/04 COuP 62/07/30 0.340
61/12/04 0.390 62/09/03 COMP
61/12/13 COMP 62/O /O3 0.350
61/12/13 0.420 62/09/10 COMP
61/12/18 COMP 62/09/10 0.410
62/09/17 COMP
-------
TABLE A-8 (Cont.) 340000
37 02 17.0 107 52 25.0
ANIMAS RIVER NEAR CEDAR HILL
(RMN—12) 35 NEW MEXICO
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA —226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLvED ERROR DISOLVED
TO DAY FEET PC/I PC/L UG/L TO DAY FEET PC/I PC/L UG/L
62/09/17 0.350 63/05/27 - 0.090 2.000
62/09/24 COMP 63/06/03 0.130 1.600
s2/09/24 0.290 63/06/10 0.110 2.300
62/10/01 COMP 63/06/17 0.160 0.400
62/10/01 0.240 8.S0 63/06/23 0.190 0.500
62/10/08 COMP 63/07/09 0.230 2.300
62/10/08 0.330 8.900 63/07/29 COMP
62/10/15 COMP 63/08/OS 0.150 2.200
2’1O/1S 0.140 6.000 63/09/03 COMP
6U 0/22 COMP 63/09/03 0.110 1.800
62/10/22 - 0.140 6.100 63/09/23 COMP
62/10/29 COMP 63/09/30 0.100 2.400
62/10/29 0.180 8.300 63/10/28 COMP
62/11/05 COMP 63/11/04 0.130 4.000
62/11/05 0.250 9.100 63/11/26 COMP
> 62/11/12 COMP 63/12/02 0.140 4.400
. ‘2/12/03 0.680 7.100 63/12/23 COMP
62/12/10 COMP 63/12/27 0.110 2.400
62/12/10 0.340 8.800 64/02/01 COMP
62/12/17 COMP 64/02/01 0.160 2.500
62/ 1 2/17 0.460 5.600 64/02/05 COMP
62/12/24 COMP 64/02/21 0.160 2.500
62/12/24 1.510 2.300 64/02/28 COMP
62/12/31 COMP 64/05/05 0.140 1.300
62/12/31 1.290 2.900 64/05/30 COMP
63/01/07 COMP 64/06/02 0.190 0.700
63/02/25 0.190 18.000 64/06/27 COMP
63/02/27 0.290 7.800 64/07/02 0.140 1.400
63/03/04 COMP 64/07/30 COMP
63/03/18 - 0.340 10.000 64/08/05 — 0.030 2.300
63/03/25 0.340 2.800 64/08/29 COMP
63/04/01 0.230 1.900 64/09/01 0.160 3.700
63/04/08 0.210 1.600 64/10/04 COMP
63/04/15 0.230 1.500 64/10/06 0.140 6.000
63/04/22 0.200 1.800 64/10/31 COMP
63/04/29 0.210 3.400 64/11/03 0.110 3.700
63/05/06 0.200 3.200 64/11/28 COMP
63/05/13 0.150 2.700 64/12/02 0.100 3.500
63/05/20 0.100 1.800 65/01/02 COMP
65/01/05 0.090 2.700
65/01/30 COMP
-------
TABLE A-8 (Cant.) 340000
37 02 17.0 107 52 25.0
(RMN-12) ANIMAS RIVER NEAR CEDAR HILl.
35 NEW MEXICO
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U-NAT
FROM OF 01501 VED ERROR DISOLVED FROM Of DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/L PC/L UG/L
65/02/02 0.090 2.700 6 6/09/30 0.100 3.600
65/02/27 COMP 66/10/31 COMP
65/03/02 0.080 3.200 66/11/02 0.080 1.400
65/04/03 COMP 66112/02 COsIP
65/04/06 0.080 2.600 66/12/05 2.200
65/05/02 COMP 66/12/31 COMP
65/05/05 0.140 1.700 67/01/03 0.090 2.500
65/05/30 COMP 67/01/27 COMP
65/06/02 0.080 2.300 67/01/31 0.080 1.900
65/07/02 COHP 67/02/25 COMP
65/07/04 0.050 1.800 67/02/28 0.050 3.100
65/07/31 COMP 67/03/29 COMP
65/08/04 0.090 2.200 67/03/31 0.090 2.200
65/08/29 COMP 67/04/26 COMP
65/08/31 0.090 2.800 67/04/28 0.110 1.100
65/09/30 COMP 67/05/26 COMP
65/10/02 0.060 1.200 67/05/29 0.100 1.100
65/10/29 COMP 67/06/28 COMP
65/10/31 0.090 2.200 67/07/03 0.130 3.000
65/11/27 COMP 67/07/29 COMP
65/11/28 0.080 2.300 67/08101 0.090 1.900
65/12/31 COMP 67/09/0 1 COMP
66/01/03 0.050 1.900 67/09/04 10 00
66/01/29 COMP CPm—12 0.120 0.020 2.200
66/01/31 0.060 2.200 67/09/30 10 00
66/02/26 COI4P 67/10/01 10 00
66/02/28 0.050 0.000 CP(T)—09 0.110 0.010 3.600
66/04/02 COMP 67/10/22 10 00
66/04/04 0.050 1.400 67/10/28 10 00
66/04/30 COMP CP(T)—12 0.080 0.010 3.500
66/05/02 0.080 0.800 67/11/30 10 00
66/05/27 COMP 67/12/02 10 00
66/05/29 0.080 0.900 CP(T)—12 - 0.080 0.010 2.900
66/06/29 COMP 67/12/30 10 00
66/07/01 0.110 1.400 68/01/02 10 00
66/07/28 COMP cP IT—12 0.090 0.010 2.500
66/07/30 0.190 3.300 8/01/31 10 00
66/09/0 1 COMP 60102/08 10 00
66/09/03 0.140 1.800 cPIT)—04 0.070 0.010 2.600
66/09/28 COMP 68103/02 10 00
-------
TABLE A-8 (Cont.) 340000
37 02 17.0 107 52 25.0
ANIMAS RIVER NEAR CEDAR HILL
RMN—12i 35 NEW MEXICO
COLORADO RIVER BASiN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 2703
DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L
68/03/06 10 00
CP(T)—12 0.100 0.010 2.400
68/03/30 10 00
68/04/02 10 00
CP(T)—12 0.050 0.010 1.800
68/04/26 10 00
68/04/30 0.060 0.010 1.200
68/05/31 COMP
68/06/03 0.060 0.020 0.800
68/06/29 COMP
68/07/03 0.040 0.010 2.800
68/07/16 COMP
69/07/24 0.040 0.010 1.400
69/09/03 0.080 0.010 2.300
69/10/16 0.050 0.010 2.400
69/12/10 0.040 0.010 3.300
c .n 70/01/14 0.040 0.010 2.500
— 70/02/10 0.050 0.010 3.700
70/03/11 0.070 0.010 3.500
70/04/14 0.050 0.010 2.600
70/05/12 0.050 0.010 1.900
70/06/09 0.020 0.010 1.900
70/07/14 0.040 0.010 2.000
70/10/13 0.050 0.010 1.800
71/01/21 0.050 0.010 1.400
71/04/20 0.030 0.010 0.500
71/08/17 0.100K 1.500
-------
STATION DESCRIPTION 34n001
36 4 30.0 108 08 30.0 -
(RMN—13 SAN JUAN RIVER UPS OF FARMINGTON
I 3 NEW MEXICO
COLORADO RIVER BASIN
- - MIDDLE COLORADO—SAN JUAN Sub bASIN
1118C030 2111204
- - 2 0000 FEET- DEPTH
RIVER
SYSTEM II III IV V VI VII VIII I x x XI XII
INDEX 1101001 009420
MILLS 0789.60 0254.1’O • . . . . . . .
DESCRIPTION
CRAP NO. RMN—13, bWS- 2
SW1/4, SW1/4, SEC 1” 129N, R1 W
SAMPLED AT NORTH dANIc. 5 MILES UPSTREAM FROM THE MOUTH OF THE ANIMAS
R IvLR IN SAN JUAN CJUNIY. — - -
TtPE OATA—RAu; 1 GAL/WEEK
TYPE FLOW MEAS—WTM SIG REC AT 0’ 36 O00 MINUS ANIMAS R. 09364500
N.) SAMPLING STARTEL) 1/9 62 ANI) LNDE() 4/ 7/64
REMARKS: THIS STATIUi i PROVIDES bACKGROUND RADIOACTIVITY FOR THE SAN JUAN
RIVE - -. -
Number of Samples assayed for Ra—226 through period of record (l961—19 2): 20
Mean Ra—226 concentration for period of record and 2a- deviation : 0.07±0.08
Number of Samples assayed for U(total) through period of record (1962—1972): 19
Mean U(total) concentration for period of record and 2o deviation : 2.83 ± 4.1L .
-------
Tr 11 I • -
r. o 7 ’ I
‘
R1VER •
/
r - ‘ /
, _4•_’ - Oil Well
= //q/7’ ‘e5 \
... .. / Gas We I’
[ I - — II
. .. J7 . • . . 14
,,.- . / -i - - -
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We . . Sch. ,__—-1
-—- - ,
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—.—. — II.— -I
.CAM/NA P .ACER Bluft iriew
/ I_ Sch
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Gas
• WeI
- . - •- W ll
-
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el
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/,
r’ - .Wa çTV /
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5377
L/7 i
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55 o 2 ‘ _L
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j 7 ç J j
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-------
TABLE A-9 340001
36 42 30.0 108 08 30.0
, , i1 SAN JUAN RIVER UPS OF FARMINGTON
iNi i—iii 35 NEW MEXICO
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1 118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLvED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L
62/07/09 0.030
62/07/23 CaMP
62/10/15 0.160 8.300
62/11/02 COMP
62/11/05 0.030 5.400
62/12/03 COMP
62/12/05 0.080 4.300
62/12/28 COMP
62/12/31 0.140 4.000
63/01128 COMP
63/02/04 0.130 5.500
63/03/01 COMP
63/03/04 0.050 1.900
63/03/29 COMP
63/04/01 0.060 0.800
63/04/26 COMP
,, 63/04/29 0.050 3.600
- 63/05/31 COMP
63/06/03 0.060 1.900
63/06/23 COt4P
63/07/01 0.110 1.700
63/07/29 COMP
63/08/05 0.080 4.500
63/08/12 COMP
63/09/03 0.060 2.300
63/09/23 COMP
63/09/23 0.040 1.100
63/10/28 COMP
63/11/04 0.060 0.000
63/11/26 COMP
63/12/02 0.O 0 2,600
63/12/23 COMP
63/12/30 0.030 1.200
64/01/27 COMP
64/02/03 0.030 1.300
64/02/24 CO uP
64/03/02 0.030 1.200
64/03/23 COMP
64/03/30 0.080 2.200
64/04/27 COuP
-------
STATION DESCRIPTION 340002
lb 44 15.0 lOB 24 15.0
SAN JUAN RIVER NEAR FRUITLAND
(RMN—14) 35 NEW MEXICO -
COLORADO RIVER BASIN
MIDDLE COLORADO-SAN JUAN SUB b SIN
1118C030 2111204
2 0000 FEET DEPTH
RIVER
SYSTEM II Ill IV V VI VII VIII IX X X l XII
ItiDEX 1101001 0094 0
MILES 0789.bO 0235.40 . . . . . . . . . .
DESCRIPTION
CRHP NO. RMN—14, t3w —51
NW1/4i SE1/4,SEC 10, T29N , RISW
SAMPLED AT COUNTY ROAD FD tUGE NEAR FRUITLAND IN SAN JUAN COUNTY.
BRILt IS ON ROAD T’) 4 CORNERS POWER PLANT.
IYPE DATA—RAD; 1 GAL/WEEIc.
TYPE FLO MEAS—WIM STG REC AT 0 365000
SAMPL1NG STARTED d/1/62 AND ENLI L) ‘ /3/69
P EMARKS TillS STATIUN PROVIDES BACKGROUND RADIOACTIVITY DATA UPSTREAM -
FRO1j THE VANADIUM CORPORATION OF AMERICA URANIUM MILL AT SHIPROCK, NEW
MEXICO.
Number of Samples assayed for Ra—226 through period of record (1961—197 2): 85
Mean Ra—226 concentration for period of record and 2o deviation : 0.07 *0.07
Number of Samples assayed for U(total) through period of record (1962—1972): 814
Mean U(total) concentration for period of record and 2o deviation : 2.90 3.23
-------
32
1 i 1
(1’ ‘
SHI ROCI( IS M I,
i2O //
\
STATION LOCATION
(RMN-14)
‘30
25
‘31
36
4070
()
in
0
Q
68
2 0€
FEE
°66
42
A- 56
-------
TABLE A-b
340002
36 44 15.0 108 24 15.0
(RMN-14) SAN JUAN RIVER NEAR FRUITLAND
35 NEW MEXICO
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT 09503 09504 22703
FROM OF DISOLVED ERROR DISOLVED DATE TIME DEPTH RA—226 RA—226D U—NAT
TO DAY FEET PC/L PC/L UG/L FROM OF DISOLVED ERROR DISOLVED
62/08/01 0.150 TO DAY FEET PC/L PC/L UG/L
62/08/06 COMP 64/05/03 0.090 2.100
62/10/08 0.090 5.100 64/05/26 COMP
62/11/02 COMP 64/06/02 0.100 0.900
62/11/05 0.150 7.000 64/06/23 COMP
62/12/01 OMP 64/06/30 0.060 1.600
62/12/05 0.090 6.800 64/07,28 COMP
62/12/28 COMP 64/08/04 0.130 2.300
62/12/31 0.080 6.600 64/08/25 COMP
63/01/07 COMP 64/09/01 0.060 3.500
63/02/04 0.160 7.700 64/09/29 COMP
63/03/01 COMP 64/10/05 0.060 3.200
63/03/04 0.210 9.000 64/10/26 COMP
63/03/29 COMP 64/11/02 0.060 4.000
63/04/01 0.160 1.900 64/11/23 COMP
63/04/26 COMP 64/11/30 0.060 4.000
63/04/29 0.130 3.200 64/12/28 COMP
63/05/31 COMP 65/01/04 0.110 2.000
63/06/03 0.140 2.800 65/01/25 COMP
63/06/23 COMP 65/02/01 0.030 2.000
63/07/01 0.150 2.700 65/02/22 C OMP
63/07/22 COMP 65/03/01 0.050 2.600
63/08/05 0.110 4.200 65/03/29 COMP
63/08/26 COMP 65/04/05 0.080 2.300
63/09/03 0.090 2.600 65/04/26 COt4P
63/09/23 COMP 65/05/03 0.080 1.700
63/09/30 0.060 2.900 65/05/24 COMP
63/10/28 COMP 65/05/31 0.080 1.300
63/10/28 0.040 2.200 65/06/28 COMP
63/11/26 COMP 65/07/05 0.060 1.500
63/12/02 0.050 3.600 65/07/26 COMP
63/12/23 co 65/08/02 0.040 1..500
63/12/30 0.050 2.500 65/08/23 COMP
64/01/27 COMP 65/08/30 0.030 2.400
64/02/03 0.050 3.000 65/09/27 COMP
64/02/24 COMP 65/10/04 0.050 2.500
64/03/02 0.050 2.000 65/10/25 COMP
64/03/23 COMP 65/11/01 J.040 0.400
64/03/30 0.090 2.400 65/11/22 COMP
64/04/27 COMP 65/11/29 0.030 0.800
65/12/27 COMP
-------
TABLE A-1O (Cont.) 340002
36 44 15.0 108 24 15.0
SAN JUAN RIVER NEAR FRUITLANO
(RMN-14) 35 NEW MEXICO
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1 118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U-NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC /L PC/L UG/L TO DAY FEET PC/L PC/L UG#’L
66/01/03 0.030 0.800 67/09/04 0.070 3.700
6/01/24 COMP 67/09/25 COMP
66/01/31 0.040 1.500 67/10/02 10 00
66/02/20 COMP CP(T)—03 0.050 0.010 4.300
66/02/28 0.040 0.300 67/10/23 10 00
66/03/28 COMP 67/1O/ 0 10 00
66/04/04 0.060 1.200 CP(T)—04 0.110 0.010 4.100
66/04/25 COMP 67/11/27 10 00
66/05/02 0.050 1.300 67/12/04 10 00
66/05/23 COMP CP(T)—04 0.070 0.010 3.400
66/05/30 0.060 0.800 67/12/25 10 00
66/06/27 COMP 68/01/01 10 00
66/07/04 0.090 2.800 CP(T)— 04 0.080 0.010
66/07/25 COMP 68/01/29 10- 00
c n 66/08/01 - 0.050 3.000 68/02/OS 10 00
66/08/29 COMP CP(T)—03 0.050 0.010 2.700
66/09/05 0.090 1.500 68/02/26 10 00
66/09/26 COMP 68/03/04 10 00
66/10/03 0.040 1.600 CP(T)—04 0.060 0.010
66/10/24 COMP 68/03 25 10 00
66/10/31 0.040 2.300 68/04/01 10 00
66/11/14 COMP cPT— 04 0.070 0.010 1.700
66/12/05 0.050 2.600 68/04/22 10 00
66/12/19 COMP 68/04 21 10 00
66/12/26 0.040 6.100 CP(T)—O4 0.050 0.010 1.400
67/01/02 0.050 2.100 68/05/27 10 00
67/01/23 COMP 68/06/03 10 00
67/01/30 0.040 3.100 CP(T)—03 0.070 0.010 0.800
67/02/20 COMP 68/06/24 10 00
67/02/27 0.040 2.300 - 68/07/03 0.080 0.010 2.900
67/03/27 COMP 68/08/01 COMP
67/04/10 0.050 3.200 68/08/13 10 00
67/04/24 COMP cP(T —02 0.050 0.010 2.300
67/05/01 0.060 2.500 68 08/27 II 00
67/05/22 COMP 68/09/11 0.080 0.010 4.100
67/05/29 0.040 2.600 6$/ 09,24 COMP
67/06/26 COMP 68/10/08 0.050 8.010 4.500
67/07/03 0.090 5.100 68/10/19 COMP
67/07/24 COMP 68/11/04 0.050 0.010 4.500
67/07/31 0.090 4.100 68/11/20 COMP
67/08/28 COMP
-------
U,
TABLE A-b (Cont.) 340002
36 44 15.0 108 24 15.0
(RMN_111 SAN JUAN RIVER NEAR FRUITLAND
/ 35 NEW MEXICO
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIM€ DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L
68/12/18 0.030 0.010 2.700
69/01/21 0.040 0.010 2.400
69/02/26 0.060 0.010 3.000
69/03/26 0.080 0.010 4.200
69/04/23 0.040 0.010 3.100
69/05/29 0.050 0.010 2.300
69/06/24 0.050 0.010 1.500
69/07/27 0.060 0.010 2.500
69/09/03 0.070 0.010 3.000
-------
STATION DESCRIPTION 340003
36 47 52.0 108 43 52.0
SAN JUAN RIVER DWS OF SMIPROCK
(RMN-14s) 35 NEW MEXICO
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
RIVER
SYSTEM II III IV V VI VII VIII IX X XI XII
INDEX 1101001 009420
MILES 0789.60 0216.20 . . . . . . . . . .
DESCRIPTION
CRAP NO. RMN—14S, LJSGS—09—368 000
NE1/4. SWI/4, SEC 22, T3 ON, P18W
SAMPLED SOOFT DOWNSTREAM OF HWY 666 BRIDGE UNTIL 08/66. THEN SAMPLED
DWS OF VANADIUM CORP OF AMERICA MILL 3.SMI. . 3M1. WEST OF SHIPROCK 10/69
TILL 07/71
TYPE DATA—RAD.BACT; GRAB, 1 GAL/WEEK. PRIOR TO 7/1/64. 1 GAL/WEEK AUT
TYPE FLOW MEAS—WTR 516 REC AT 09368000
SAMPLING STARTED 7/09/62 AND ENDED 7/19/71. SAMPLING RESUMED BY EPA
N—MEXICO. REMARKS: THERE WERE NO DIRECT WASTE DISCHARGES FROM THE MILL,
BUT 4SEEPS CARRIED WASTE, HOLDING POND LIQUIDS TO THE RIVER. NO NEW DATA
Number of Samples assayed for Ra—226 through period of record (1961—19 2): 179
Mean Ra—226 concentration for period of record and 2o deviation : 0.08 0.10
Number of Samples assayed for U(total) through period of record (1962—1972): 17S
Mean U(total) concentration for period of record and 2o deviation : . 49 ± 21.72
-------
- s.
STATION LOCATION
(RMN-14S)
A- 61
2
I
I
NJ 1 ‘
I + _/
I / !L
< T7’
0 ‘
: I r
r’ I
T I ,
A
Z __
JJ ’
N
- - - - _______
/ e
L /r,
,i 4 1_
- 7 ‘i J 1:\ f T t. I NGS
I I \ \ L P I
j
‘)L J1 , [ . 7\ .,, i’i J
(N , - r V ( .. , — - - ‘ —
0
•• ,‘ i /!o; - -
/ J I W
-------
TABLE A-li 340003
36 47 52.0 108 43 52.0
(RMN—14S) SAN JUAN RiVER OWS OF SMIPROCI(
35 NEW MEXICO
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 211 1204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA—226 RA—226D U—NAT 09503 09504 22703
FROI OF DISOLVEO ERROR DISOLVED DATE TIME DEPTH RA—226 RA—226-D U—NAT
TO DAY FEET PC/L PC/L UG/L. FROM )F DISOLVED ERROR DISOLVED
62/07/09 0.160 TO 0A FEET PC/L PC/L UG/L
62/07/30 COMP 63/08/26 0.110 9.900
62/08/07 0.150 63/08/30 COMP
62/08/20 cot p 63/09/03 0.090 8.800
62/09/14 0.130 63/09/06 COMP
62/09/21 COMP 63/09/09 0.140 16.000
62/09/24 0.150 63/09/13 COMP
62/10/01 COMP 63/09/16 0.120 28.000
62/10/01 0.090 8.300 63/09/20 COI4P
62/11/02 COMP 63/09/23 0.060 8.200
62/11/05 0.080 11.000 63/09/27 COMP
62/12/03 COMP 63/09/30 0.080 15.000
62/12/05 0.040 13.000 63/10/04 COMP
62/12/26 COMP 63/10/0? 0.110 30.000
62/12/31 0.060 12.000 63/10/11 COMP
63/01/07 COMP 63/10/14 0.050 15.000
63/02/04 0.110 16.000 63/10/18 COMP
63 03/01 COMP 63/10/21 0.080 10.000
63/03/04 0.200 14.000 63/10/25 COMP
63/03/29 COMP 63/10/28 0.080 22.000
63/04/01 0.160 2.300 63/11/01 COMP
63/04/26 COMP 63/11/04 0.090 20.000
63/04/29 0.140 11.000 63/11/08 COMP
63/05/31 corw 63/11/12 0.040 21.000
63/06/03 0.160 7.500 63/11/16 COMP
63/06/23 COMP 63/11/18 0.090 1A.000
63/07/02 0.260 17.000 63/11/22 COMP
63/07/08 COMP 63/11/22 0.050 3.000
63/07/08 0.280 26.000 63/12/02 COMP
63/07/10 COMP 63/12/02 0.060 6.300
63/07/10 0.180 22.000 63/12/09 COMP
63/07/15 COMP 63/12/11 0.040 18.000
63/07/15 0.200 15.000 63/12/16 COMP
63/07/22 COMP 63/12/18 0.040 17.000
63/07/29 0.280 28.000 63/12/20 COMP
63/08/05 COMP 63/12/23 0.060 15.000
63/08/05 0.190 16.000 63/12/30 COMP
63/08/12 COMP 63/12/30 0.090 12.000
63/08112 0.250 13.000 64/01/16 COMP
63/08/19 COMP 64/01/16 0.080 21.000
64/01/20 COMP
-------
TABLE A-il (Cont.) 340003
36 47 52.0 108 43 52.0
SAN JUAN RIVER OWS Of SHIPROCK
(RMN-14S) 35 NEW MEXICO
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
O TE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U-NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/i. PC/L UGIL
64/01/20 0.080 13.000 64/09/09 0.100 16.000
64/01/24 COHP 64/09/13 COMP
64/01/27 0.050 12.000 64/09/15 0.060 9.100
64,01/31 COMP 64/09/19 COMP
64/02/03 0.210 3.400 64/09/22 0.100 7.800
64/02/OS COMP 64/09/26 COMP
64/02/10 0.050 3.500 64/09/30 0.060 7.500
64/02/12 COMP 64/10/04 COMP
64/02/24 0.050 3.200 64/10/07 0.060 11.000
64/02/28 COMP 64/10/11 COMP
64/03/02 0.060 2.900 64/10/14 0.090 16.000
64/03/06 COMP 64/10/18 COMP
64/03/09 0.040 2.900 64/10/21 0.080 22.000
64/03/11 COMP 64/10/25 COMP
64/03/16 0.050 2.700 64/10/28 - 0.080 21.000
64/03/18 COMP 64/11/01 COMP
64/03/23 0.060 2.200 64/11/05 0.080 28.000
64/03/27 COMP 64/11/09 COMe
64/04/01 0.110 1.800 64/11/10 0.050 32.000
64/04/15 0.110 40.000 64/11/14 COMP
64/04/22 0.110 36.000 64/11/19 0.060 8.900
64/04/29 0.260 93.000 64/11/23 COMP
64/05/11 0.130 67.000 64/11125 0.080 13.000
64/05/14 0.100 16.000 64/11/29 cOMP
64/05/20 0.110 3,800 64/12/02 0.090 12.000
64/05/27 0.080 2.100 64/12/09 0.050 15.000
64/06/03 0.130 8.800 64/12/16 0.080 14.000
64/06/10 0.110 13.000 64/12/23 0.050 13.000
64/06/18 0.110 2.300 - 64/12/30 0.030 5.000
64/06/24 0.110 3.500 65/01/06 0.080 6.300
64/07/08 0.110 8.400 65/01/12 0.060 7.900
64/07/15 0.060 5.600 65 /01/20 0.080 3.500
64/07/22 0.100 6.800 65/01/27 0.080 2.600
64/01/29 0.080 5.000 65/02/03 0.070 2.000
64/08/06 0.060 5.500 65/02/10 0.140 3.500
64/08/12 0.100 3.000 6S oZF17 0.060 3.300
64/08/19 0.080 5.soo 65/02/26 0.050 2.900
64/08/26 0.100 7.600 65 03/03 0.050 4.600
64/09/02 0.110 14.000 65/03/10 0.060 4.ooo
64/09/06 COMP
-------
TABLE A-li (Cont.) 340003
36 47 52.0 108 43 52.0
SAN JUAN RIVER DWS OF SHIPROC c
(RMN—14S) 35 NEW MEXICO
COLORADO RIVER BASIN
MIDDLE COLORADO-SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA-226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/L PC/L UG h
65/03/17 0.140 8.400 ‘5/1O/04 0.040 5.600
65/03/24 0.080 7.900 55/10/10 COMP
65/03/31 0.060 5.800 65/10/11 0.030 7.200
65/04/07 0.060 5.000 65/10/17 COMP
65/04/14 0.090 5.300 65/10/18 0.090 4.300
6S/ )4/21 0.050 3.200 65/10/24 COMP
65/04/28 0.050 2.600 65/10/25 0.040 4.200
65/05/05 0.090 4.300 65/10/31 COMP
65/05/13 0.090 2.400 65/11/01 0.060 2.600
65/05/26 0.110 1.900 65/11/07 COMP
65/06/02 0.040 2.700 65/11/08 0.040 1.600
65/06/09 0.080 2.000 65/11/14 COMP
65/06/16 0.050 1.800 65/11/15 0.050 1.800
b5/06/23 0.080 2.900 65/11/21 COMP
65/06/30 0.050 2.800 65/11/22 0.050 0.700
65/07/07 0.040 1.400 65/11/28 COMP
65/07/13 COMP 65/11/29 0.060 2.900
65/07/14 0.080 1.300 65/12/05 COMP
65/07/20 COMP 65/12/06 0.060 2.900
65/07/21 0.060 4.300 65/12/12 COMP
65/07/27 COMP 65/12/13 0.050 2.000
65/07/28 0.050 3.800 65/12/19 COMP
65/08/01 COMP 65/12/20 0.040 2.000
65/08/02 0.080 1.800 65/12/26 COMP
65/08/08 COMP 65/12/27 0.050 3.000
65/08/09 0.040 3.200 66/01/02 COMP
65/08/15 COMP 66/01/03 0.030 1.300
65/08/16 0.040 3.000 66/01/09 COMP
65/08/23 COI4P - 66/01/10 0.090 2.200
65/08/24 0.050 5.000 66/01/16 COMP
65/08/29 COMP 6b/01/17 0.030 2.800
65/08/30 0.050 8.100 66/01/24 COMP
65/09/06 COMP 66/01/25 0.030 3.500
65/09/07 0.050 6.100 66/01/30 COMP
65/09/12 COMP 66/01/31 0.050 2.900
65/09/13 0.080 4.400 b6/02/06 COMP
65/09/16 COMP 66/02/07 0.030 6.400
65/09/17 0.050 4.400 66/02/13 COMP
65/09/26 COMP 66/02/14 0.040 4.700
65/09/27 0.050 4.200 66/02/20 COMP -
65/10/03 COMP
-------
TABLE A—il (Cont.) 340003
36 47 52.0 108 43 52.0
‘RMN—14S) SAN JUAN RIVER DUS OF SHIPROCK
35 NEW MEXICO
COLORADO RIVER BASIN
MIDDLE COLORADO-SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT 09503 09504 22703
FROM OF DISOLVED ERROR DISOLVED DATE TIME DEPTH RA—226 RA—226—D U—NAT
TO DAY FEET PC/L PC/L UG/L FROM OF DISOLVED ERROR DISOLVED
66/02/21 0.030 1.200 TO DAY FEET PC/L PC/L UG/L
66/02/27 COMP 70/10/14 0.040 0.010 1.000
66/02/28 0.040 0.100 71/01/21 0.040 0.010 1.100
66/03/06 COMP 71/04/20 0.050 0.010 1.700
66/03/07 0.040 0.300 71/07/19 0.140 3.200
66/03/14 COMP
66/03/15 0.060 0.100
66/03/20 COMP -
66/03/21 0.060 0.400
66/03/27 COMP
66/03/28 0.040 . 2.200
66/04/03 COMP
66/04/04 0.040 2.400
66/04/10 COMP
66/04/11 0.040 2.300
66/04/17 COMP
66/05/02 0.030J 1.400
66/05/09 0.080 0.600
66/05/16 O.060J 1.300
66/05/23 0.060 1.100
66/05/31 0.050 1.500
66/06/06 0.060 1.400
66/06/14 0.080 2.200
66/06/20 0.050 2.100
66/06/27 0.080 2.400
66/07/11 0.060 3.500
66/07/25 COMP
66/08/15 0.100 4.600
66/08/22 0.050 3.000
69/10/15 0.060 0.010 2.100
69/11/19 0.100 0.020 3.200
69/12/10 0.030 0.010 3.400
70/01/13 0.040 0.010 4.s oo
70/02/10 0.040 0.010 6.200
70/03/10 0.030 0.010 2.200
70/04/14 0.150 0.020 5.000
70/05/12 0.050 0.010 3.400
70/06/09 0.060 0.0)0 4.200
70/07/14 0.090 0.020 3.600
-------
STATION DESCRIPTION Oh 49.0 109 1 51.0
SAN JUAN RIVEW UPS MEXICAN HAT
(RMN-15) 49 UTAH
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN -
l lldCO3O 2l11 04
2 0000 FEET—•OEPTH
RIVER -
SYSTEM II III IV V VI VII VIII IX - X XI XII -- -
INDEX 1101001 00942 0
MILES 0789.60 0114.00 . . . . - . . --.--- . i -- -- -——-— - - ——- - ——---—- —
DESCRIPT ION
C BP NO. RMN—15.BWS—iO, USGS—09—379500
NE I/4, SW I/4. SEC 7 T42S , W I9E
a S —
SAMPLED 1/2M1. UPS HWY 47 RID(,E ,(JPS MOUTH GYPSUM WASH TILL 07/69,
NOW SAMPLED 1800FT UPS FPOM HWY 47 BRIDGE AT 09319500 - - -
T’PPE OATA—RAO$ GRAB. 3 PINTS/WEEK
- TYPE FLOW MEAS—WTR 516 REC AT 09379500
SAMPLING STARTED 1 /11/61 AND IS ONb )ING
REMARKS: THIS STATION P. OVIOEU RADIOACTIVITY DATA UPSTREAM FROM THE AZ - -
MINE ALS MILL NEAR MEXICAN HAT.
Number of Samples assayed for Ra—226 through period of record (1961—197 2): 87
Mean Ra—226 concentration for period of record and 20- deviation : 0.13 ± 0.143
Number of Samples assayed for U(total) through period of record (1962—1972): 80
Mean U(total) concentration for period of record and 2o deviation : 5 ,44 t 6.63
-------
;.
JILL -
1 ¼
1
_______ _______ _______ \S \ : -
+ I
>
2 r A )
, ;:- J .
c ;
‘
c _ L
V
/ \:
STATION LOCATIONS
(RMI4-15 ;RMN—16)
A- 67
-------
TABLE A-12 490002
37 08 49.0 109 51 51.0
(RMN-15 SAN JUAN RIVER UPS MEXICAN HAT
I 49UTAH
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DI5OLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L. U /L TO DAY FEET PC/L PC/L UG/L
61/12/11 1.800 63/11/04 0.060 4.500
61/12/30 COMP 63/11/30 COMP
62/01/01 0.160 63/12/02 0.080 6.800
62/01/27 CO,4P 63/12/27 COMP
62/03/05 0.140 63/12/30 0.060 5.500
62/03/31 COMP 64/02/01 COMP
62/04/02 0.080 64/02/03 0.060 6.200
62/04/28 COMP 64/02/29 COMP
62/04/30 0.100 64/03/02 0.090 5.900
62/06/02 COMP 64/03/28 COMP
62/06/04 0.100 64/03/30 0.090 7.900
62/06/30 COMP 64/05/02 COMP
62/07/02 0.150 64/05/04 0.130 5.900
62/07/28 COMP 64/05/30 COMP
62/10/01 0.140 8.700 64/06/01 0410 2.600
62/11/03 cOMP 64/06/27 COMP
62/11/05 0.100 9.000 64/06/29 0.110 3.000
62/12/01 COMP 64/08/01 COMP
62/12/03 0.090 9.800 64/08/03 0.130 5.800
62/12/29 COMP 64/08/29 COMP
62/12/31 0.080 13.000 64/08/31 0.130 9.500
63/02/02 COMP 64/10/03 COMP
63/02/04 0.100 8.900 64/10/05 0.650 23.000
63/03/02 COMP 64/10/31 COMP
63/03/04 0.150 11.000 64/11/02 0.100 8.800
63/03/30 COMP 64/11/28 COMP
63/04/01 0.140 5.700 64/11/30 0.060 7.800
63/04/27 COMP 64/01/02 COMP
63/04/29 0.100 5.900 65/01/04 0.040 4.800
63/06/01 COMP 65/01/30 COMP
63/06/03 0.110 5.700 65/02/01 0.060 3.700
63/06/29 COMP 65/02/27 COMP
63/07/01 0.200 11.000 65/03/01 0.090 5.800
63/08/03 COMP 65/04/03 COMP
63/08/05 0.260 12.000 65/04/05 0.050 4.000
63/08/31 COMP 65/05/01 COMP
63/09/02 0.130 6.300 65/10/19 0.080 2.800
63/09/28 COMP 65/10/29 COMP
63/09/30 0.130 7.600 65/11/02 0.080 2.100
63/11/02 COMP 65/11/27 COMP
-------
DATE
FPOM
To
65/12/0 1
66/01/Cl
66/01/04
66/01/29
66/02/03
6 /O2/27
é’ /03/0 1
66/03/31
66/04/03
66/04/28
66/04/30
66/05/27
66/05/29
6 6/06/30
66/07/02
c 86/07/29
.0 66/07/31
66/09/02
66/09/04
66/09/29
66/10/02
66/10/27
66/10/30
66/12/01
66/12/04
66/12/31
66/12/29
67/01/03
67/02/01
67/02/26
67/03/01
67/03/30
67/04/02
67/04/28
67/04/30
6 7/05/25
67/05/28
67/06/30
67/07/02
67/07/28
490002
37 08 49.0 109 51 51.0
SAN JUAN RIVER UPS MEXICAN HAT
49 UTAH
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
DATE TIME
FROM OF
TO DAY
67/07/30
67/09/01
67/09/03 10 00
CP(T)—12
67/09/30 10 00
67/10/04 10 00
CP(T)—12
67/10/29 10 00
67/11/01 10 00
CP (1) —12
67/12/03 10 00
67/12/06 10 00
CP(T)—12
67/12/29 10 00
68/02/06 10 00
CP(T)—12
68/03/01 10 00
68/03/04 10 00
CP(T)—04
68/03/29 10 00
68/03/31 10 00
CP(T)—04
68/04/26 10 00
68/04/28 10 00
CP (1) —18
68/05/31 10 00
68/06/02 10 00
CP IT)—12
68/06/28 10 00
69/01/20
69/02/25
69/03/25
69/04/22
69/05/28
69/06/23
69/07/23
69/09/02
69/10/16
70/01/01
70/03/3 1
TABLE A-12 (Cont.)
(RMN-15)
TI ME
OF
DAY
09503
09504
22703
DEPTH
RA-226
RA—226—D
U—NAT
DISOLVED
ERROR
DISOLVED
FEET
PC/L
0.090
PC/L
UG/L
2.200
COMP
0.050
2.600
COMP
0.060
2.500
COMP
0.080
3.300
COMP
0.060
2.300
COMP
0.040
1.400
COMP
0.060
2.700
COMP
0.110
5.000
COMP
0.110
5.700
COMP
0.100
6.700
COMP
0.090
3.000
COMP
0.090
2.900
COMP
0.080
5.800
COMP
0.050
6.300
COMP
0.050
6.600
COMP
0.050
4.300
COMP
0.080
7.000
COMP
0.070
6.400
COMP
0.120
3.400
COMP
0.120
6.800
09503
09504
22703
DEPTH
RA—226
RA—226—D
U—NAT
DISOLVED
ERROR
DISOLVED
FEET
PC/L
0.080
PC/L
UG/L
6.100
COMP
0.100
0.010
5.200
0.090
0.010
8.500
0.060
0.010
6.600
0.080
0.010
6.200
0.090
0.010
6.000
0.080
0.010
6.900
0.070
0.010
4.300
0.150
0.020
2.400
0.050
0.010
1.000
0.090
0.060
0.070
0.090
0.080
0.070
0.110
0.080
0.080
0.040
0.010
0.010
0.010
0.010
0.010
0.010
0.020
0.010
0.010
0.010
5.600
4.300
5.700
2.900
1.900
2.100
3.100
5.000
3.000
2.700
COMP
-------
TABLE A—12 (Cont.) 490002
37 08 49.0 109 51 51.0
SAN JUAN RIVER UPS MEXICAN HAT
‘“i 49 UTAH
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L
70/04/16 0.050 0.010 3.900
70/10/21 0.050 0.010 1.300
71/01/18 0.040 0.010 1.500
71/04/20 0.060 0.010 4.000
71/10/06 1.000 3.800
72/C1/13 0.100K 2.000
72/04/03 0.200 1.400
-------
49 (1003
37 09 (10.0 109 52 45.0
SAN JUAN . IV€R DWS MEXICAN HAT
-. 49 UTAN -
COLORADO RIVER BASIN
-- MIDDLE COLORADO—SAN JUAN SUB BASIN
111 C030 2111204
- — —- - - -— 2 0000 FEEr OEPTH --
II III IV V VI VII VIII I X X XI XII -— - - - - -
009420
111.00 --—-.-- --. .-.-- • .. -—— . ... — —-.-—--—-———
DESCRIPTION
CRPP NO. RMN—16, BWS—31, USf,S—09—379600 - - -. - -
SE I/4, NW1/4, SEC 12. T425. RidE
SAMPLEO 1/2 MILE IJOWNSTREAM FROM PIE AZ MINERALS URANIUM MILL
EFFLUENT OISCI-IAI G IN SAN JUAN COUNTY - -——-——-— _______ -----—
• T’fPE DATA—RAt), BACT; GRAW. 3 PINTS/WEEIc
-- - TYPE FLOW MEAS—WTR STG REC AT 0937 50O - - —
SAI4PLING STARTED 12/11/61 AND ENDED 10/21/70
— - REMARIcS: PRIOR TO 6/1/65-SAMPLE-WAS A GRAU OF 6 PINTS/WEEK — -— -
V
Number of Samples assayed for Ra—226 through period of record (i961—19Z2): 166
Mean Ra—226 concentration for period of record and 2a- deviation : 0.17 1.39
Number of Samples assayed for U(total) through period of record (1962—1972): i .6
Mean U(total) concentration for period of record and 2o deviation : 8.07 11.89
STATION DESCRIPTION
(RMN -16)
RIVER
SYSTEM
IWDEX 1101001
- MILES 0789.60 0
- —S -
-------
T
STATION LOCATIONS
(RM i-15;RMN-16)
A -72
-------
TABLE A-13
490003
37 09 00.0 109 52 45.0
SAN JUAN RIVER DWS MEXICAN HAT
(RMN—16’ 49 UTAH
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT 09503 09504 22703
FROM OF DISOLVED ERROR DISOLVED DATE TIME DEPTH RA—226 RA—226—D U—NAT
TO DAY FEET PC/L PC/L LJG/L FROM OF DISOLVED ERROR DISOLVED
61/12/11 0.33 ( 1 TO DAY FEET PC/L PC/L UG/L
61/12/30 COMP 63/03/04 0.280 12.000
62/01/01 0.140 63/03/30 COMP
62/01/27 COMP 63/04/01 9.000 14.000
62/01/29 O.12 63/04/27 COMP
62/03/03 COMP 63/04/29 0.100 6.200
62/03/05 0.090 63/06/01 COMP
62/03/3) COMP 63/06/03 0.110 6.000
62/04/02 0.100 63/06/29 COMP
62/04/28 COMP 63/07/01 0.250 11.000
62/04/30 0.060 63/07/06 COMP
62/06/02 COMP 63/07/08 0.260 7.600
62/06/04 0.090 63/07/13 COMP
62/06/30 COMP 63/07/15 0.110 14.000
62/ )7/02 0.290 63/07/20 COMP
62/07/28 COMP 63/07/22 0.840 0.800
62/07/30 0.460 63/07/27 COMP
62/08/11 COMP 63/07/29 0.400 13.000
62/08/13 0.280 63/08/03 COMP
)2/08/14 COMP 63/08/05 0.210 11.000
62/08/15 0.390 63/08/10 COMP
62/08/16 0.360 63/ ,8/12 0.190 7.600
62/08/17 0.260 63/08/17 COMP
62/08/18 0.180 63/08/19 0.180 14.000
62/08/20 0.280 63/08/24 COMP
62/08/21 0.540 63/08/26 0.200 6.200
62/09/01 COMP 63/08/31 COMP
62/09/03 0.210 63/09/02 0.160 8.700
62/09/08 COMP 63/09/07 COMP
62/09/10 0.210 63/09/09 0.120 8.000
62/09/15 co 63/09/14 COMP
62/09/17 0.240 63/09/16 0.140 17.000
62/09/22 COMP 63/09/21 COMP
62/09/24 0.350 63/09/23 0.140 13.000
62/09/29 COMP 63/09/28 COMP
62/10/01 0.190 10.000 63/09/30 0.080 12.000
62/11/03 COMP 63/10/05 COMP
62/11/05 0.150 63/10/07 0.060 14.000
62/12/01 COMP 63/10/12 COMP
b3/02/04 0.120 15.000 63/10/14 0.130 9.100
COMP 63/10/20 COMP
-------
TABLE A—13 (Cont.,) 490003
37 09 00.0 109 52 45.0
Fnuil , SAN JUAN RIVER OWS MEXICAN HAT
l ’.IJI IV) 49 UTAH
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—O U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/i PC/L UG/L
63/10/21 -0.110 7.900 64/03/09 0.050 8.700
63/10/26 COMP 64/03 114 COMP
63/10/28 0.090 6.600 64/03/16 0.050 8.700
63/11/02 COMP 64/03/21 COMP
63/11/04 0.060 4.400 64/03/23 0.080 8.400
63/11/09 COMP 64/03/28 COMP
63/11/11 0.040 8.100 64/03/30 0.050 8.100
63/11/16 CaMP 64/04/03 COMP
63/11/18 0.050 5.200 64/04/06 0.090 9.600
63/11/23 COMP 64/04/11 COMP
63/11/24 0.030 9.300 64/04/13 0.090 8.200
63/11/30 COMP 64/04/18 COMP
63/12/02 0.090 7.400 64/04/20 0.110 8.100
63/12/0 7 COMP 64/04/25 COMP
63/12/09 0.060 7.800 64/04/27 0.090 8.500
‘ 63/12/14 COMP 64/05/02 COMP
—I 63/12/16 0.100 8.100 64/05/04 0.050 11.000
63/12/21 COMP 64/05/09 COMP
63/12/23 0.040 5.900 64/05/18 0.150 8.200
63/12/28 COMP 64/05/23 COMP
63/12/30 0.060 5.500 64/05/25 0.090 7.600
64/01/04 COHP 64/05/30 COMP
64/01/06 0.040 4.900 64/06/01 0.100 4.500
64/01/11 COMP 64/06/06 COMP
64/01/13 0.080 11.000 64/06/08 0.090 3.200
64/01/18 COMP 64/06/13 COMP
64/01/20 0.060 7.900 64/06/15 0.080 2.000
64/01/25 COMP 64/06/20 COMP
64/01/27 0.060 8.400 64/06/22 0.080 3.900
64/02/01 COMP 64/06/27 COMP
64/02/03 0.160 14.000 64/06/29 0.110 3.000
64/02/08 COMP 64/07/04 COMP
64/02/10 0.080 6.700 64/07/06 0.180 3.600
64/02/15 COMP 64/07/11 COMP
64/02/17 0.130 11.000 64/07/13 0.100 2.900
64/02/22 COMP 64/07/18 COMP
64/02/24 0.160 15.000 64/07/20 0.090 3.200
64/02/27 COMP 64/07/25 COMP
64/03/02 0.060 9.400 64/07/27 0.080 3.700
64/03/07 COMP 64/08/01 COMP
-------
TABLE A-13 (Cant.) 490003
37 09 00.0 109 52 45.0
/flIAII i SAN JUAN RIVER OWS MEXICAN HAT
NJI IVJ 49 UTAH
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA-226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/i PC/L UG/L TO DAY FEET PC/i PC/L UGh
64/08/03 0.080 4.900 F4/12/21 0.080 8.500
64/08/08 COMP 64/12/26 COMP
64/08/10 0.090 6.000 64/12/28 0.050 10.000
64/08/15 COMP 65/01/02 COMP
ô’./08/17 0.110 6.200 65/01/04 0.060 6.900
64/08/22 COMP 65/01/09 COMP
64/08/24 0.180 6.200 65/01/11 0.050 5.200
64/08/29 COMP 65/ 1/16 COMP
64/08/31 0.100 9.200 oS/Ol/iS 0.050 4.800
64/09/05 COMP 65/01/23 COMP
64/09/07 0.010 35.000 65/01/25 0.030 4.300
COMP 65/01/30 COMP
64/3 ’ /14 0.140 10.000 65/02/01 0.040 4.300
64109/19 COMP 65/02/06 COMP
64/09/21 0.140 14.000 65/02/08 0.060 3.500
> 64/09/26 COMP 65/02/13 COMP
64/09/28 0.130 13.000 65/02/15 0.080 5.900
u, 64/10/03 COMP 65/02/20 COMP
64/10/05 0.030 20.000 65/02/22 0.060 4.500
64/10/10 COMP 65/02/27 COMP
6 ./10/12 0.060 33.000 65/03/01 0.090 4.600
64/10/17 COMP 65/03/06 COMP
64/10/19 0.060 15.000 65/03/08 0.060 8.800
64/10/24 COMP 65/03/13 COMP
64/10/26 0.340 27.000 65/03/15 0.100 26.000
64/10/31 COMP 65/03/20 COMP
64/11/02 0.030 24.000 65/03/22 0.090 7.500
64/11/07 COMP 65/03/27 COMP
64/11/09 0.050 21.000 65/03/29 0.080 5.500
64/11/14 COMP 65/04/03 COMP
64/11/16 0.090 14.000 65/04/05 0.060 4.200
64/11/21 COMP 65/04/10 COMP
64/11/23 0.050 17.000 65/04/12 0.060 4.000
64/11/28 COMP 65/04/17 COMP
64/11/30 0.040 16.000 65/04/19 0.060 4.000
64/12/OS COMP 65/04/24 COMP
64/12/07 0.030 30.000 65/04/26 0.060 2.300
64/12/12 COMP 65/05/0 1 COMP
64/12/14 0.160 7.000 65/10/19 0.060 3.600
64/12/19 COMP 65/10/29 COMP
-------
TABLE A-13 (Cont.,) 490003
37 09 00.0 109 52 45.0
(RMN-16) SAN JUAN RIVER DWS MEXICAN HAT
49 UTAH
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT 09503 09504 22703
FROM OF DISOLVED ERROR DISOLVED DATE TIME DEPTH RA—226 RA—226—D U—NAT
TO DAY FEET PC/L PC/L UG/L FROM OF DISOLVED ERROR DISOLVED
65/11/02 0.060 2.200 TO DAY FEET PC/L PC/L U6/L
65/11/27 COMP 67/07/02 0.120 7.000
65/12/01 0.090 2.500 67/07/28 COMP
66/01/01 COMP 67/07/30 0.100’ 5.900
66/01/04 0.080 2.800 67/09/01 COMP
66/01/29 COMP 67/09/03 10 00
66/02/01 0.060 2.800 CP(T)—12 0.100 0.010 5.800
66/02/27 COMP 67/09/30 10 00
66/03/01 0.080 3.300 67/10/04 10 00
66/03/31 COMP CP(T)—12 0.100 0.010 9.000
66/04/03 0.060 2.200 67/10/29 10 00
66/04/28 COMP - 67/11/01 10 00
66/04/30 0.040 1.500 CP(T)—12 0.070 0.010 8.300
66/05/27 COMP 61/12/03 10 00
66/05/29 0.050 3.300 67/12/06 10 00
66/06/30 COMP cP(T)— 12 0.060 0.010 5.800
66/07/02 0.090 500 67/12/29 10 00
f.b/07/29 COMP 68/02/06 10 00
63/07/31 0.140 6.500 CPIT)—12 0.080 0.010 6.600
66/09/ 2 co,ip 68/03/01 10 00
66/D /04 0.090 5.100 68/03/04 10 00
66/09/29 COMP CP(T)—04 0.060 0.010 6.300
66/10/02 0.090 3.500 ( 8/U3/29 10 00
66/10/27 COMP 68/03/31 10 00
65/10/30 0.060 3.500 CP(T)—04 0.060 0.010 5.000
66/12/01 COMP 68/04/26 10 00
66/12/04 0.050 5.700 68/04/28 10 00
66/12/31 COMP CP(T)—12 o.ioo 0.010 2.800
66/12/29 0.080 5.200 68/05/31 10 00
67/01/22 COMP 68/06/02 10 00
67/02/01 0.050 4.400 CP(T)—12 0.060 0.010 1.200
67/02/26 COMP 68/06/28 10 00
61/03/01 0.060 4.100 69/01/20 0.100 0.010 5.800
67/03/30 co iP 69/02/25 0.050 0.010 3.600
67/04/02 0.080 7.000 69/03/25 0.070 0.010 6.100
67/04/28 COMP 69/04/22 0.090 0.010 3.600
67/04/30 0.060 6.600 69/06/23 0.060 0.010 2.100
67/05/25 Cot4P 69/07/23 0.130 0.020 3.200
67/05/28 0.090 4.300 69/09/02 0.100 0.020 5.000
67/06/30 COMP 69/10/16 0.050 0.010 3.200
-------
-1
TABLE A—13 (Cant.) 490003
37 09 00.0 109 52 45.0
, SAN JUAN RIVER DUS MEXICAN HAT
rdJI —ivj 49 UTAH
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 . 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L
70/01/01 0.050 0.010 3.600
70/03/31 COMP
70/04/16 0.040 0.010 2.900
70/08/03 0.010 0.010 4.600
70/10/21 0.050 0.010 1.300
-------
070044
STATION DESCRIPTION 38 13 00.0 108 33 45.0
SAN MIGUEL RIVER AT NATURITA
. 08 COLORADO
rci’ii -u7) COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
RIVER
SYSTEM II III IV V VI VII VIII I X X XI XII
INDEX 1101001 011940 01090
MILES 1027.10 0066.60 021.50 . . . . . . . .
DESCRIPTION
CRAP NO. RMN—17, USGS—09—17550 0
NE1/4 , NW1/4. SEC 30, T46N, RI5W
SAMPLED AT HWY 97 BRIDGE AT NATURITA IN MONTROSE COUNTY
TYPE DATA—PAD; G AB. 1 GAL/WEEK
TYPE FLOW MEAS—u TR STG PEC AT 09175500
SAMPLING STARTED 10/28/61 AND Is ONGOING
REMARKS: THIS STATION PROVIDES BACKGROUND RADIOACTIVITY DATA FOR THE SAN
MIGUEL RIVER UPSTREAM OF THE URANIUM HILLS AT NATUPITA AND URAVAN. PRIOR
TO 5/1/65 THIS STATION WAS 3.8 MILES UPSTREAM OF PRESENT LOCATION AND
WAS SAMPLED AUTOMATICALLY 1 GAL/WEEK.
Number of Samples assayed for Ra—226 through period of record (1961—19Y2): 175
Mean Ra—226 concentration for period of record and 2a deviation : 0.06 * 0.07
Number of Samples assayed for U(total) through period of record (1962—1972): lL 7
Mean U(total) concentration for period of record and 2a deviation : 2 l3 O7
-------
pntrose
Airport 59/6
-1
-4
,—. I-I
I I
—a
C)
-I
-------
TABLE A—14 070044
38 13 00.0 108 33 45.0
SAN MIGUEL RIVER AT NATURITA
(RMN-17) 08 COLORADO
COLORADO RIVER BASIN
UPPER COLOkADO RIVER SUB BASIN
1118C030 2111204
2 0000 FtET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—2260 U-NAT DATE TIME DEPTH RA-226 RA-226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/L PC/L UG/L
61/10/28 0.000 62/03/18 0.040
61/11/04 COMP 62/03/24 COMP
61/11/04 0.040 62/03/24 0.060
61/11/11 COMP 62/04/01 COMP
61/11/11 0.050 62/04/01 0.060
61/11/17 COMP 62/04/29 COMP
61/11/17 0.020 62/04/30 0.040
S1/11/25 COMP 62/06/03 COMP
61/11/25 0.020 62/06/03 0.050
61fl2/02 COMP 62/07/01 CO14P
61/12/02 0.040 62/07/01 0.020
61/12/09 COMP 62/07/28 COMP
61/12/07 0.010 62/07/28 0.090
6 1/12/17 COMP 62/09/03 COMP
611.12/17 0.030 62/09/03 0.060
61/12/24 COMP 62/09/29 COMP
61/12/24 0.010 62/09/29 0.050 1.200
0 61/12/31 COMP 62/11/04 COMP
61/12/31 0.000 62/11/04 0.010 1.000
62/01/05 COMP 62/12/02 COMP
62/01/05 0.030 62/12/02 0.040 0.900
62/01/13 COMP 62/12/30 COMP
62/01/13 0.010 62/12/30 0.010 1.100
62/01/21 COMP 63/02/03 COMP
62/01/21 0.040 63/02/03 0.010 1.300
62/01/28 COMP 63/03/03 COMP
62/01/28 0.040 63/03/03 0.060 2.100
62/02/03 COMP 63/03/30 COMP
62/02/03 0.030 63/03/30 0.050 0.100
62/02/10 COMP 63/04/21 COMP
62/02/10 0.040 63/04/27 0.050 0.000
62/02/18 COMP 63/06/02 COMP
62/02/18 0.060 63/06/02 0.050 0.500
62/02/25 COMP 63/06/30 COMP
62/02/25 0.060 63/06/30 0.080 2.300
62/03/02 COMP 63/08/04 COMP
62/03/02 0.040 63/08/04 0.060 0.800
62/03/11 COMP 63/08/31 COMP
62/03/11 0.050 63/08/31 0.040 1.600
62/03/18 COMP 63/09/29 COMP
-------
TABLE A-14 (Cont.) 070044
38 13 00.0 108 33 45.0
SAN MIGUEL RIVER AT NATURITA
(RMN-17) 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
1118C03 0 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UGh TO DAY FEET PC/L PC/L UG/L
63/09/29 0.040 3.900 65/05/31 0.080 1.800
63/11/03 COMP 65/07/05 COMP
63/11/03 0.030 0.600 65/07/05 0.040 1.700
63/11/30 COMP 65/08/01 COMP
63/11/30 0.030 2.000 65/08/09 0.050 1.500
63/12/29 COMP 65/08/31 COMP
63/12/29 0.040 1.200 65/08/31 0.030 3.300
64/02/02 COMP 65/10/04 COMP
64/02/02 0.040 1.000 65/10/11 0.030 5.000
64/02/28 COMP 65/11/02 COMP
64/02/29 0.040 0.100 65/11/08 0.040 2.700
64/03/29 COMP 65/11/29 COMP
64/03/29 0.190 3.200 65/12/06 0.040 2.900
64/05/03 COMP 66/01/03 COMP
64/05/03 0.100 0.900 66/01/10 0.040 3.000
64/05/30 COMP 66/01/31 COMP
64/05/30 0.100 0.000 66/02/07 0.010 3.500
64/06/28 COMP 66/02/28 COMP
64/06/28 0.010 1.000 66/03/07 0.040 1.000
64/08/0 1 COMP 66/03/28 COMP
64/08/01 0.080 1.200 66/04/04 0.050 1.400
64/08/29 COMP 66/04/25 COMP
64/08/29 0.060 2.700 66/05/02 0.040 0.400
64/10/03 COMP 66/05/23 COMP
64/10/03 0.030 2.300 66/05/30 0.060 1.000
64/11/01 COMP 66/06/27 COMP
64/11/01 0.050 2.400 66/07/05 0.050 2.700
64/11/29 COMP 66/07/23 COMP
64/11/29 0.040 2.200 66/07/31 0.060 5.100
65/01/03 COMP 66/08/29 COMP
65/01/03 0.140 1.700 66/09/05 0.080 6.500
65/01/30 COMP 66/09/26 COMP
65/01/31 0.040 1.400 66/10/03 0.060 1.700
65/02/28 COMP 66/10/24 COMP
65/02/28 0.040 1.400 66/10/31 0.040 2.900
65/04/04 COMP 66/11/28 COMP
65/04/04 0.040 1.000 66/12/05 0.030 2.400
65/05/01 COMP 66/12/26 COMP
65/05/01 0.040 1.200 67/01/02 0.040 2.700
65/05/31 COMP 67/01/23 COMP
-------
TABLE A-14 (Cont.) 070044
38 13 00.0 108 33 45.0
IIDMM SAN MIGUEL RIVER AT NATURITA
1 JJl Ilj 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 . 22703
DATE TIME DEPTH RA-226 RA-226—D U—NAT DATE TIME DEPTH RA-226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/I PC/I UG/L TO DAY FEET PC/L PC/L UG/L
67/01/30 0.060 5.000 68/09/29 0.040 0.010 8.200
67/02/20 COMP 68/10/27 COtIP
67/02/27 0.050 2.400 68/11/03 0.010 0.000 4.400
67/03/27 COMP 68/11/24 COMP
67/04/02 0.040 3.000 68/12/01 0.040 4.300
67/04/23 COMP /12/22 COMP
67/04/30 0.030 1.500 oS/12/29 0.020 0.000 6.000
67/OS/28 COMP 6q/ 1/26 COMP
67/06/05 0.020 1.700 69/02/03 0.020 0.000 4.600
67/06/26 COMP 69/02/23 COMP
67/07/02 0.040 2.500 69/03/02 0.050 0.010 3.300
67/07/24 COI4P 69/03/23 COMP
67/07/31 0.060 2.000 69/03/30 0.040 0.010 1.600
67/08/28 COMP 69/04/27 COMP
67/09/04 0.050 4.100 69/05/11 0.030 0.010 2.200
67/09/25 COMP 69/05/25 COMP
67/10/02 0.040 3.100 69/06/01 0.030 0.010 1.000
67/10/23 COMP 69/06/22 COMP
67/10/30 0.030 3.800 69/06/29 0.040 0.010 2.200
67/11/26 COMP 69/08/28 0.050 0.010 3.600
67/12/03 0.040 5.100 69/09/04 0.080 0.010 5.000
67/12/24 COMP 69/09/25 COMP
67/12/31 0.040 2.800 69/10/02 0.040 0.010 3.300
68/01/28 COMP 69/10/30 COMP
68/02/04 0.020 3.300 69/11/06 0.040 0.010 3.000
68/02/25 COMP 69/11/26 COMP
68/03/03 0.030 3.300 69/12/04 0.040 0.010 3.200
68/03/24 COMP 70/01/02 COMP
68/03/31 0.050 1.600 70/01/09 0.030 0.010 5.600
68/04/21 COMP 70/01/29 COMP
68/04/28 0.040 1.600 70/02/05 0.020 0.010 3.900
68/05/26 COMP 70/Q2/26 COMP
68/06/02 0.020 0.000 0.800 70/03/05 0.040 0.010 4.500
68/06/23 COMP 70/03/26 COMP
68/06/30 0.040 0.010 0.700 70/04/02 0.050 0.010 2.600
68/07/28 COMP 70/05/01 COMP
68/08/04 10 00 70/05/08 0.040 0.010 2.400
CP T)—04 0.030 0.010 0.600 70/05/28 COMP
68/08/25 10 00 70/06/04 0.040 0.010 1.400
68/09/01 0.060 0.010 6.900 70 06/25 COMP
68/09/22 COMP
-------
TABLE A-14 (Cont.) 070044
38 13 00.0 108 33 45.0
SAN MIGUEL RIVER AT NATURITA
RJJiI ) 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLvED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/L PC/L UG/L
70/07/02 0.030 0.010 3.000 71/12/09 0. 100K 2.500
70/07/24 COMP 71/12/16 0.100 3.800
70/07/30 0.040 0.010 0.900 71/12/22 0.100 3.500
70/08/27 COMP 71/12/29 0.100K 5.200
70/09/03 0.050 0.010 0.700 72/01/06 - 0.100K 2.200
70/10/01 COMP 72/01/13 0.100K 2.200
70/10/07 0.050 0.010 2.600 72/01/21 0.100K 2.600
70/10/29 coi4P 72/01/27 0.100K 2.600
70/11/05 0.010 0.030 2.300 72/02/03 0.100K 2.900
70/11/25 COMP 72/02/11 0.100K 1.800
70/12/03 0.040 0.010 2.100 72/02/17 0.100K 1.800
70/12/31 COMP 72/02/24 0.100K 3.600
71/01/07 0.040 0.010 4.500 72/03/02 0.100K 8.200
71/01/28 COMP 72/03/09 0.100K 2.400
71/02/03 0.030 0.010 2.500 72/03/16 0.100K 1.800
71/02/25 COMP 72/03/23 0.100K 1.300
71/03/04 0.040 0.010 2.000 72/03/31 0.100K 1.300
71/04/01 COMP 72/04/06 0.100K 1.400
71/04/18 0.040 0.010 4.200 72/04/13 0.100K 1.500
71/04/28 COMP 72/04/21 0.100K 1.800
71/05/06 0.040 0.010 1.000 72/04/26 0.100K 1.300
71/05/27 COMP 72/05/04 0.100 1.300
71/06/03 0.030 0.010 0.400 72/05/11 0.100 2.000
71/07/01 COMP 72/05/16 0.100 3.100
71/07/08 0.008 0.900 72/05/25 0.100 1.000
71/07/29 COMP 72/06/01 0.100K 0.600
71/08/05 0.100K 1.300 72/06/08 0.100K 1.200
71/08/26 COMP 72/06/15 0.100K 0.700
71/09/02 0.100K 3.200 72/06/22 0.200 1.000
71/09/30 COMP 72/06/29 0.100K 0.900
71/10/07 0.1001< 1.900
71/10/14 0.100K 2.200
71/10/21 0.1001< 1.300
71/10/28 0.200 1.600
71/11/04 0.200 2.000
71/11/10 0.100K 1.800
71/11/19 0.1001< 3.500
71/11/24 0.100K 2.500
71/12/02 0.1001< 2.600
-------
STATION DESCRIPTION 070045
3$ oo.o 108 44 00.0
SAN MIGUEL RIVER AT URAVAN
RMN—18) 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB bASIN
1118C03 0 2111204
2 0000 FEET OEPTFI
RIVER
SYSTEM II III IV V VI VII VIII I X X XI XII - -
INDEX 1101001 011940 01090
MILES 1027.10 0Q66. 0 006.70 - -; . . . -------------——
DESCRIPT ICJN
- CR’P NO. RMN—18, BWS— 4
NEI/4. SW1/’.. SEC 3’ . T4RN, R1TW
TYPE FLOW MEAS—wIN WEIGHT INSTANT AT STATE 141 8’ 1DGE UPSTREAM
SAMPLED AT COUNTY HWY bRIDuE UPSTREAM OF OLD MILL AT UHAVAN IN
MONTROsE COUNTY, uP rREAM OF DIVERSION TO URAVAN MILL.
T’I’PE DATA—RAD. AUTO. 1 bAL/WEEK
- SAMPLING STARTED AT OLD LOCATION (SEE REMARKS) I0/27/f1 AND ENDED -
11710/71. SAMPLING STARTED AT NEW LocAr low 11/19/71 AND IS ONGOING
REMARKS: OLD LOCATION 1MI. UPSTREAM URAVAN AND DOWNSTREAM OF HWY 141 AT
BALL PARK. INCREA Eu LEVELS OF RADIOACTIViTY FROM RESIDUAL AND ERODED
- - TAIL INGS MATERIALS FROM VAN CORP OFAMER OLD MILL 11MI UPS AT NATURITA -—’
Number of Samples assayed for Ra—226 through period of record (1961—1972): 211
Mean Ra—226 concentration for period of record and 2o- deviation : p.17 ± 0.28
Number of Samples assayed for U(total) through period of record (1962—1972): 119
Mean U(total) concentration for period of record and 2o deviation : 4.90 ± 11.00
-------
Mine
‘ JBM ‘7’
: ;r’; .Mstrki
O5
A FORMER STATION LOCATION
PRESENT STATION LOCATION
(I )
—--4
I Q
I -
(I)
U,
‘fJrc
-------
TABLE A-iS 070045
38 22 00.0 108 44 00.0
SAN MIGUEL RIVER AT URAVAN
(RMN-18) 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U-NAT DATE TIME DEPTH RA—226 RA—226-D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLvED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO AY FEET PC/L PC/L UG/L
61/10/27 0.160 62/03/13 0.180
61/11/04 COMP 62/03/24 COMP
61/11/04 0.120 62/03/14 0.160
61/11/11 COMP 62/04/01 COMP
61/11/11 0.090 62/03/25 0.230
61/11/17 COMP 62/04/01 COMP
61/11/17 0.110 62/04/01 0.230
61/11/25 COMP 62/04/2e COMP
61/11/25 0.110 62/05/07 0.280
61/12/02 COMP 62/05/13 COMP
61/12/02 0.150 62/06/03 0.380
61/12/09 COMP 62/07/01 COMP
61/12/09 0.140 62/07/01 0.240
61/12/17 COMP 62/07/29 COMP
61/12/17 0.180 62/07/28 0.360
61/12/23 COMP 62/09/03 COMP
61/12/23 0.200 62/09/03 0.490
61/12/30 COMP 62/09/09 COMP
61/12/30 0.150 62/09/09 0.510
62/01/05 COMP 62/09/16 COMP
62/01/05 0.270 62/09/16 0.260
62/01/13 COMP 62/09/23 COMP
‘ 2/01/13 0.250 62/09/23 0.130
62/ 1/21 COP4P 62/09/29 COMP
62/01/21 0.270 62/09/29 0.210 5.600
62/01/28 COMP 62/10/01 COMP
62/01/28 0.220 62/10/07 0.160 5.500
( ?/O2/O3 COMP 62/10/13 COMP
62/02/03 0.250 62/10/13 0.080 5.800
62/02/10 COMP 62/10/19 COMP
ó2/02/10 0.170 62/10/19 0.060 3.000
62/02/18 COMP 62/10/27 COMP
62/02/18 0.240 62/10/27 0.110 4.700
62/02/25 COMP 62/11/04 COMP
62/02/25 0.180 62/11/04 0.110 6.100
62/03/02 COMP 62/11/12 COMP
62/03/02 0.290 62/11/12 0.340 6.700
62/03/11 COt4P 62/11/19 COMP
62/03/11 0.240 62/11/19 0.050 5.900
62/03/18 COMP 62/11/25 COMP
-------
TABLE A-15 (Cont.) 070045
38 22 00.0 108 44 00.0
SAN MIGUEL RIVER AT URAVAN
(RMN-18 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
111 8C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT OATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR QISOLVED FROM OF OISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/L PC/L UG/L
62/11/25 0.130 ?.100 63/04/13 0.210 4.000
62/12/02 COMP 63/04/21 COP4P
62/12/02 0.030 5.500 63 104/21 0.200 5.900
62/12/09 COMP 63/04/27 COMP
62/12/09 0.100 6.300 63/04/27 0.280 2.000
62/12/16 COMP 63/05/05 COMP
62/12/16 0.060 6.800 63/05/05 0.330 2.600
62/12/22 COMP 63/05/11 COMP
62/12/22 0.150 ?.400 63/05/11 0.340 o.aoo
62/12/30 COMP 63/05/19 COMP
62/12/30 0.350 17.000 63/05/19 0.260 2.500
63/01/06 COMP 63/05/26 COMP
63/01/06 0.400 24.000 63/05/26 0.250 1.900
63/01/13 COMP 63/06/02 COMP
63/01/13 0.880 63.000 63/06/02 0.280 3.200
, 63/01/20 COMP 63/06/09 COMP
—J 63/01/20 1.240 19.000 63/06/09 0.240 0.900
63/01/27 COMP 63/06/16 COMP
63/01/27 0.590 17.000 63/06/16 0.280 1.600
63/02/03 COMP 63/06/23 COMP
63/02/03 0.330 7.700 63/06/23 0.360 2.700
63/02/10 COMP 63/06/30 COMP
63/02/10 0.480 12.000 63/06/30 0.110 7.700
63/02/17 COMP 63/08/04 COMP
63/02/17 0.090 9.400 63/08/04 0.160 3.800
63/02/24 COMP 63/08/31 COMP
63/02/24 0.300 8.700 63/08/31 0.140 3.100
63/03/03 COMP 63/09/29 COMP
63/03/03 0.310 16.000 63/09/29 0.190 6.000
63/03/09 COMP 63/11/03 COI4P
63/03/09 0.780 12.000 63/11/03 0.100 1.900
63/03/18 COMP 63/11/30 COMP
63/03/18 0.210 4.800 63/11/30 0.130 5.700
63/03/23 COMP 63/12/29 COMP
63/03/23 0.230 2.700 63/12/29 0.110 3.200
63/03/30 COMP 64/02/02 COMP
63/03/30 0.400 1.200 64102/02 0.090 3.900
63/04/07 COMP 64/02/28 COMP
63/04/07 0.190 1.600 64/02/29 0.110 2.500
63/04/13 COMP 64/03/29 COMP
-------
TABLE A—15 (Cont.) 070045
38 22 00.0 108 44 00.0
SAN MIGUEL RIVER AT URAVAN
(RMN-18) 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA-226 RA—226—O U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/ _ PC/L UG/L
64/03/29 0.190 3.200 65/11/29 0.340 8.300
64/05/03 COMP 66/01/03 COMP
64/05/03 0.200 1.800 66/01/03 0.140 5.100
64/05/30 COMP 66/01/31 COMP
64/05/30 0.180 0.900 66/01/31 0.220 6.700
64106/20 COMP 66/02/28 COMP
6’-/06/28 0.150 3.700 66/02/28 0.100 2.100
66/08 101 COMP 66/04/04 COMP
64/08/01 0.080 1.200 66/04/04 0.090 1.700
64/08/29 COMP 66/05/02 COMP
64/08/29 0.150 6.300 66/05/02 0.140 1.000
64/10/03 COMP 66/05/30 COMP
66/10/03 0.110 3.500 66/05/30 0.100 2.200
64/11/01 COMP 66/07/05 COMP
64/11/01 0.100 5.000 66/07/05 0.180 3.600
64/11/29 COMP 66/07/31 COMP
64/11/29 0.090 5.000 66/07/31 O.2 6.000
65/01/03 COMP 66/09/05 COMP
65/01/03 0.130 4.900 66/09/05 0.150 5.700
65/01/31 COMP 66/10/03 COMP
65/01/31 0.100 4.900 66/10/03 0.100 3.700
v5/02/28 COMP 66/10/31 COMP
65/02/28 0.130 5.000 66/10/31 0.080 2.900
65/04/04 COMP 66/12/05 COMP
65/04/05 0.400 2.600 66/12/05 0.100 5.900
65/05/01 COMP 67/01/02 COMP
65/05/01 0.160 1.300 67/01/02 0.090 4.700
65/05/31 COMP 67/01/30 COMP
65/05/31 0.090 2.000 67/01/30 0.090 5.000
65/07/05 COMP 67/02/27 COMP
65/07/05 0.080 2.800 67/02/27 0.150 3.700
65/08/01 COMP 67/03/27 COMP
65/08/01 0.150 3.600 67/03/27 0.090 3.500
65/08/31 COMP 67/04/23 COMP
65/08/31 0.100 5.000 67/04/23 0.170 2.800
65/10/04 COMP 67/05/28 COMP
65/10/04 0.080 5.600 67/05/28 0.110 2.700
65/11/02 COMP 67/07/03 COMP
65/11/02 0.090 4.400 67/07/03 0.100 2.700
65/11/29 COMP 67/07/31 COMP
-------
TABLE A-15 (Cont.) 070045
38 22 00.0 108 44 00.0
(RMN-18’ SAN MIGUEL RIVER AT URAVAN
/ 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U-NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/I.. PC/I UG/L. TO DAY FEET PC/L PC/L UG/L
67/07/31 0.250 4.500 69/03/18 0.130 0.020 17.000
67/09/04 COMP 69/03/19 0.060 0.010 6.100
67/09/04 0,130 5.100 69/03/20 0.060 0.010 b.500
67/10/02 COMP 69/03/30 0.100 0.010 3.000
67/09/30 0.110 3.700 69/05/04 COMP
67/10/30 COMP 69/05/11 0.070 0.010 2.200
67/10/30 0.080 5.000 69/05/25 COMP
67/12/03 COMP 69/06/01 0.050 0.010 2.900
67/12/03 0.060 5.200 69/06/29 COMP
67/12/31 COMP 69/07/16 0.050 0.010 1.600
67/12/31 0.090 5.200 69/08/28 0.100 0.010 5.100
68/02/04 COMP 69/09/04 0.090 0.010 5.000
68/02/04 0.090 5.000 69/09/25 COMP
68/03/03 COMP 69/10/02 0.060 0.010 3.700
> 68/03/03 0.110 4.400 69/10/30 COMP
68/03/31 COMP 69/11/06 0.040 0.010 3.900
68/03/31 0.160 3.400 69/11/26 COMP
68/04/28 COMP 69/12/04 0.060 0.010 4.200
68/04/28 0.090 1.400 70/01/02 COMP
68/06/02 COMP 70/01/09 0.060 0.010 6.300
68/06/02 0.110 0.010 0.900 70/01/29 COMP
68/06/30 COMP 70/02/05 0.100 0.020 5.500
68/06/30 10 00 70/02/26 COMP
CP(T)—06 0.110 0.020 1.500 70/03/05 0.050 0.010 5.200
68/08/04 10 00 70/03/26 COMP
68/08/04 0.100 0.010 1.500 70/04/02 0.080 0.010 3.700
68/09/01 COMP 70/05/01 COMP
68/09/01 0.130 0.020 7.500 70/05/08 — 0.090 0.010 2.200
68/09/29 COMP 70/05/28 COMP
68/09/30 0.090 0.010 8.400 70/06/04 0.090 0.020 1.100
68/11/03 COMP 70/06/25 COMP
68/11/03 0.120 0.020 7.100 70/07/02 0.070 0.010 3.500
68/12/01 COMP 70/07/24 COMP
68/12/01 0.060 0.010 5.700 70/07/30 0.090 0.020 1.400
68/12/29 COMP 70/08/27 COMP
68/12/29 0.060 0.010 7.200 70/09/03 0.100 0.020 1.700
69/01/31 COMP 70/10/01 COMP
69/02/01 0.100 0.010 1.500 70/10/07 0.060 0.010 3.200
69/02/23 COMP 70/10/29 COMP
69/03/02 0.080 0.010 7.000 70/11/05 0.180 0.020 4.600
69/03/30 COMP 70/11/25 COMP
-------
TABLE A—15 (Cont.) 070045
38 22 00.0 108 44 00.0
IDMP .1 i SAN MIGUEL RIVER AT URAVAN
‘I” 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
11 18C 030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/L PC/L UG/L
70/11/17 0.100 0.020 2.400 72/01/06 0.100K 6.600
70/11/19 0.070 0.010 3.000 72/01/13 COMP
70/12/03 0.060 0.010 3.900 72/01/13 0.100K 4.400
70/12/31 COMP 72/01/21 COMP
71/01/07 0.090 0.010 3.500 72/01/21 0.100K 4.100
71/01/28 COMP 72/01/27 COMP
71/02/03 0.070 0.010 3.300 12/01/27 0.200 5.200
71/02/25 COMP 72/02/03 COMP
71/03/04 0.100 0.020 3.000 12/02/03 0.100 4.400
71/04/01 COMP 72/02/11 COMP
71/04/05 0.090 0.010 2.200 72/02/11 0.100K 5.600
71/04/28 COMP 72/02/17 COMP
71/05/05 0.050 0.010 1.500 72/02/17 0.100K 4.100
71/05/27 COMP 72/02/24 COMP
71/06/03 0.050 0.010 1.300 72/02/24 0.300 4.800
71/07/01 COMP 72/03/02 COMP
7 1/07/OR 0.150 1.700 72/03/02 0.100 3.600
71/07/29 COMP 72/03/09 COMP
7 1/ 03/05 0.100 3.400 7&03/09 0.100K 2.400
71/08/26 COMP 72/03/16 COMP
11/09/02 0.100K 2.200 72/03/16 0.100 1.800
COMP 72/03/23 COMP
7 10/07 0.100K 3.900 72/03/23 0.100K 1.900
71/10/14 0.100K 4.300 72/03/31 COMP
71/10/22 0.100K 3.100 12/03/31 0.100K 5.600
71/10/28 0.100K 4.300 72/04/06 COMP
71/11/04 0.100 3.500 72/04/06 0.100K 3.800
71/11/10 0.100 4.400 72/04/13 COMP
71/11/19 0. 100K 3.300 12/04/13 0.200 4.800
71/11/24 0.100K 2.900 72/04/26 COMP
71/11/24 0.200 3.600 72/04/26 0.400 2.700
71/12/02 COMP 12/05/04 COMP
71/12/02 0.100K 3.600 72/05/04 0.100K 1.900
71/12/09 COMP 72/05/11 COMP
71/12/09 0.100 4.300 72/05/11 0.100 2.900
71/12/16 COMP 72/05/18 COMP
71/12/22 0.200 3.300 72/05/18 0.200 2.700
71/12/22 0.200 6.400 72/05/25 COMP
71/12/29 COMP - 72/05/25 0.200 1.400
11/12/29 0.100K 6.600 72/06/01 COMP
72/01/06 COI4P -
-------
TABLE A-15 (Cont.) 070045
38 22 00.0 108 44 00.0
(RMN-18) SAN MIGUEL RIVER AT URAVAN
08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—O U—NAT
FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L
72/06/01 0.100 1,000
72/06/08 COI4P
72/06/15 0.000 1.600
72/06122 COMP
-------
STATION DESCRIPTION 070046
3)4 2J 15.0 108 45 30.0
(RMN—2n’ SAN MIGUEL RIVER DWS OF URAVAN
08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET -. DEPTH
RIVER
SYSTEM II III IV V VI VII VIII I X X XI X l i
INDEX 1101001 01l9’ Ci 01090
MILES 1027.10 0066.60 002.70 . . . . . . . . . -
DESCRIPTION
CRAP MO. RMN—20
SEI/4, NEI/4, SIC 23. T4BN, P17W
TYPE FLOW MEA5—W1i WEIGHT INS1ANT AT STATE 141 BRIDGE UPSTREAM
SAMPLED 2 MILES uwsi SCHOOL bUILUIN ,S AND 1.8 MILES DOwNSTRL OF MILL
TY ’E DATA—PAD. bACT; AUTO. 1 bAL#’WEEK
SAMPLIN(., STARTED MT OLD LOCATION (SEE REMARKS) 10/27/61 AND ENDED
11/10/71. SAMPLING ,TARTEO AT NEW LOCATION 11/18/71 AND IS ONGOIN(,
N.) REI ARK5: OLD LOCATION 1.7’OWs OF SCHOOL AND 1.5 DWS OF UNION CAR CORP
URANIUM MILL, O.IMI UPS MOUTH ATKINSON CREFK.
TH UNION CAR8IL)E MILL AT URAVAN DISC,iA ES LIQUID WASTE EFFLUENT TO
THE RIVER - -
Number of Samples assayed for Ra—226 through period of record (1961—1972): j31
Mean Ra—226 concentration f’or period of record and 2o deviation : 1.22 t 2.2.. .
Number of Samples assayed for U(total) through period of record (1962—1972): 502
Mean U(total) concentration for period of record and 2o deviation : 19.71 ± 21.94
-------
SEE PREVIOUS FIGURE FOR
SAMPLING LOCATION
RMN-20
A-93
-------
TABLE A-16 070046
38 23 LS.0 108 45 30.0
SAN MIGUEL RIVER DWS OF URAVAN
(RMN-20) 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA-226—Q U—NAT DATE TIME DEPTH PA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLvED ERROR DISOLVED
TO DAY FEET PC/i PC/L UG/L TO DAY FEET PC/i PC/L UG/L
61/10/27 1.080 62/07/28 0.440
61/11/04 COMP 62/08/06 COMP
61/11/04 1.270 62/08/06 0.590
61/11/11 COMP 62/08/12 COMP
61/11/11 1.270 62/08/12 0.780
61/11/17 COMP 62/08/19 COMP
61/11/17 0.740 62/08/19 0.890
61/11/25 COMP 62/08/26 COMP
61/11/22 0.830 62/08/26 0.810
61/12/02 COMP 62/09/03 COMP
61/12/02 0.660 62/09/03 0.790
61/12/09 COMP 62/09/09 COMP
61/12/09 0.980 62/09/09 0.990
61/12/17 COMP € ?/ 09/16 COMP
61/12/17 0.980 6 /09/16 0.390
61/12/23 COMP 62/09/23 COMP
61/12/23 0.840 62/09/23 2.500
61/12/30 COMP 62/09/29 COMP
62/01/28 2.650 62/09/29 0.500 3.900
62/02/03 COMP 62/10/07 COMP
62/10/07 0.200 0.670
62/02/03 0.280 62/10/13 COMP
62/02/10 COMP 62/10/13 0.290 31.000
62/02/10 0.450 62/10/19 COMP
62/02/18 COMP 62/10/19 0.200 8.300
62/02/18 0.930 62/10/27 COMP
62/02/25 COMP 62/10/27 0.290 8.700
62/02/25 0.550 62/11/04 COMP
62/03/02 COMP 62/11/04 0.600 60.000
ê.03/02 0.360 62/11/12 COMP
b !0 .101 COMP 62/11/12 0.510 5.300
2/04/01 1.000 62/11/19 COMP
62/04/15 COMP 62/11/19 1.100 13.000
62/04/23 0.260 62/11/25 COMP
62/04/28 COMP 62/11/25 0.380 7.300
S?/fl4/28 1.180 62/12/02 COMP
6?’06/03 COMP 62/12/02 0.340 32.000
62/06/03 1.080 62/12/09 COMP
62/07/01 COMP 62/12/09 0.110 48.000
62/07/01 1.080 62/12/16 COMP
62/07/28 COMP
-------
TABLE A-16 (Cont.) 070046
38 23 15.0 108 45 30.0
(RMN 20) SAN MIGUEL RIVER DWS OF URAVAN
— 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22103 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH PA—226 RA-226—D U-NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/L PC/L UG/L
62/12/16 4.840 62.000 63/05/05 1.340 2.500
62/12/22 COMP 63/05/11 COMP
62/12/22 0.240 86.000 63/05/11 2.800 29,000
62/12/30 COP4P 63/05/19 COMP
62/12/30 0.680 54.000 63/05/19 1.480 15.000
63/01/06 COMP 63/05/26 COMP
63/01/06 0.740 1.500 63/05/26 0.850 4.900
63/01/13 COMP 63/06/02 COMP
63/01/13 0.590 67.000 63/06/02 1.460 5.100
63/01/20 COMP 63/06/09 COMP
63/01/20 0.850 2.500 63/06/09 0.260 0.000
63/01/27 COMP 63/06/16 COMP
63/01/27 0.480 24.000 63/06/16 0.630 0.000
63/02/03 COMP 63/06/23 COMP
63/02/03 1.130 4.400 63/06/23 0.440 2.000
63/02/10 COMP 63/06/30 COMP
63/02/10 2.500 52.000 63/06/30 1.800 22.000
63/02/17 COMP 63/07/07 COMP
63/02/17 1.540 24.000 63/07/07 0.440 8.200
63/02/24 COMP 63/07/12 COMP
63/02/24 0.810 29.000 63/07/12 1.260 30.000
6)/03/03 COMP 63/07/21 COMP
63/03/03 0.940 57.000 63/07/21 0.280 1.600
63/03/09 COMP 63/07/27 COMP
63/03/09 2.330 33.000 63/07/27 0.310 22.000
63/03/18 COMP 63/08/04 COMP
63/03/18 0.240 6.600 63/08/04 0.200 17.000
63/03/23 COMP 63/08/11 C-Ot4P
63/03/23 0.400 9.700 63/08/11 1.200 42.000
63/03/30 COMP 63/08/18 COMP
63/03/30 1.250 41.000 63/08/18 1.290 57.000
63/04/07 COMP 63/08/25 COMP
63/04/07 1.060 19.000 63/08/25 0.830 59.000
63/04/13 COMP 63/08/31 COMP
63/04/13 1.060 1.300 63/08/31 1.460 27.000
63/04/21 COMP 63/09/08 COMP
63/04/21 1.190 0.700 63/09/08 0.900 26.000
63/04/27 COMP 63/09/14 COMP
63/04/27 0.810 0.200 63/09/14 0.380 23.000
63/05/05 COMP 63/09/22 COMP
-------
TABLE A-16 (Cont..) 070046
38 23 15.0 108 45 30.0
(RMN-20 I SAN MIGUEL RIVER DWS OF URAVAN
I 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLvED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FELT PC/L PC/L UG/L
63/09/22 2.160 34.000 64/02/09 0.810 46.000
63/09/29 COMP 64/02/16 COMP
63/09/29 2.150 78.000 64/02/16 0.800 60.000
63/10/06 COMP 64/02/22 COMP
63/10/06 1.360 56.000 64/02/22 2.010 82.000
63/10/13 COMP 64/02/28 COMP
63/10/13 1.950 31.000 64/02/29 1.740 27.000
63/10/20 COMP 64/03/08 COMP
63/10/20 1.880 6.400 64/03/08 5.060 54.000
63/10/27 COMP 64/03/14 COMP
63/10/27 2.080 5.000 64/03/14 1.370 58.000
63/11/03 COMP 64/03/22 COMP
63/11/03 1.750 2.500 64/03/22 1.530 58.000
63/11/10 COMP 64/03/29 COMP
63/11/10 2.210 29.000 64/03/29 0.640 110.000
63/11/17 CaMP 66/04/05 COMP
63/11/17 1.590 39.000 64/04/05 1.870 84.000
C I 6)/J1/24 COMP 64/04/12 COMP
63/11/24 0.940 3.700 64/04/12 0.250. 5.900
63/11/30 COMP 64/04/19 COMP
63/11/30 0.580 6.600 64/04/19 0.350 5.300
63112/08 COMP 64/04/26 COMP
63/12/08 5.580 62.000 64/04/26 0.340 4.100
63/12/15 COMP 64/05/03 COMP
63/12/15 3.240 18.000 64/05/03 0.210 3.700
63112/22 COMP 64/05/10 COMP
o3/12/22 3.380 2.400 64/05/10 0.390 2.900
63/12/24 COMP 64/O5 17 COMP
63/12/28 3.280 24.000 64/05/17 0.060 0.300
64/01/05 COMP 64/05/24 COI4P
64/01/OS 1.760 19.000 64/05/24 0.200 2.100
64/01/12 COMP 64/05/31 COMP
64/01/12 1.310 20.000 64/05/31 0.240 5.200
64/01/19 COMP 64/06/06 COMP
64/01/19 0.940 37.000 64/06/06 0.340 4.600
64/01/26 COMP 64/06/13 COMP
66/01/26 1.550 41.000 64/06/13 0.300 5.500
64/02/02 COMP 64/06/21 COMP
64/02/02 0.800 32.000 64/06/21 0.240 4.500
64/02/09 COMP 64/06/28 COMP
-------
TABLE A—16 (Cont.) 070046
38 23 15.0 108 45 30.0
SAN MIGUEL RIVER DWS OF URAVAN
(RMN-20) 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226D U-NAT DATE TIME DEPTH RA—226 RA—226—O U-NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/L PC/L UG/L
64/06/28 0.390 10.000 64/11/15 1.760 47.000
64/07/05 COMP 64/11/22 COMP
64/07/05 0.320 12.000 64/11/22 1.370 i.ooo
64/07/12 COMP 64/11/29 COMP
64/07/12 0.330 14.000 64/11/29 0.480 2.000
64/07/19 COMP 64/12/06 COMP
64/07/19 0.540 16.000 64/12/06 0.740 36.000
64/07/27 COMP 64/12/15 COMP
64/01/26 1.060 44.000 64/12/15 0.420 46.000
64/08/01 COMP 64/12/20 COMP
64/08/01 0.300 14.000 64/12/20 0.390 39.000
64/08/08 COMP 64/12/26 COMP
64/08/08 0.200 20.000 64/12/26 0.600 65.000
64/08/16 COMP 65/01/03 COMP
64/08/16 0.150 14.000 65/01/03 0.730 44.000
64/08/23 COMP 65/01/10 COMP
64/08/23 0.210 31.000 65/01/10 0.730 91.000
64/08/29 COMP 65/01/17 COMP
64/08/29 0.580 40.000 65/01/17 0.740 44.000
64/09/06 COMP 65/01/24 COMP
64/09/06 1.860 62.000 65/01/24 1.270 48.000
64/09/14 COMP 65/01/31 COMP
64/09/14 0.800 37.000 65/01/31 0.470 27.000
64/09/21 COMP 65/02/07 COMP
64/09/21 0.520 29.000 65/02/07 0.490 41.000
6 /G9I27 COMP 65/02/14 COMP
64/09/27 0.680 35.000 65/02/14 3.140 39.000
64/10/03 COMP 65/02/20 COMP
64/10/03 0.340 40.000 65/02/20 0.380 41.000
64/10/11 COI4P 65/02/28 COMP
64/10/11 0.480 26.000 65/02/28 0.210 36.000
64/10/18 COMP 65/03/07 COMP
64/10/18 0.230 35.000 65/03/07 0.190 12.000
64/10/25 COMP 65/03/13 COMP
64/10/25 0.200 37.000 65/03/14 0.190 11.000
64/11/01 COP4P 65/03/21 COMP
64/11/01 0.450 95.000 65/03/21 0.620 16.000
64/11/08 COMP 65/03/28 COMP
64/11/08 0.780 34.000 65/03/28 0.380 28.000
64/11/15 COMP 65/04/04 COMP
-------
TABLE A-16 (Cont.) 070046
38 23 15.0 108 45 30.0
(DMM SAN MIGUEL RIVER DWS oF URAVAN
08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/i. PC/i. UG/L TO DAY FEET PC/I PC/I UG/L
65/04/04 1.670 19.000 65 08/31 0.590 14.000
65/04/11 COMP 65 O9/06 COMP
65/04/11 0.400 25.000 65/09/06 0.400 14.000
65/04/18 COMP 65/09/13 COMP
65/04/18 0.310 2.400 65/09/13 0.920 26.000
65/04/25 COMP 65/09/20 COMP
65/04/25 0.240 2.300 65/09/20 0.330 12.000
65/05/01 COMP 65/09/27 COMP
65/05/01 0.180 3.oOo 65/09/27 0.500 12.000
65/05/09 COMP 65/10/04 COMP
65/05/09 0.330 4.300 65/10/04 0.380 16.000
65/05/16 COMP 65/10/10 COMP
65/05/16 0.110 1.700 65/10/11 0.190 16.000
b S/ 05/23 COMP 65/10/20 COMP
6E ’ c/23 0.140 2.900 65/10/20 0.230 11.000
6’i/OS/31 COMP 65/10/26 COMP
‘ 65/05/31 0.140 4.300 65/10/26 0.690 23.000
O 65/06/07 COMP 65/11/02 COP4P
65/06/07 0.180 4.200 65/11/02 0.270 9.600
65/06/14 COMP 65/11/08 C0,4P
65/06/14 0.100 3.800 65/11/08 0.150 14.000
65/06/2! COMP 65/11/15 COMP
65/06/21 0.190 5.100 65/11/15 0.190 8.500
65/06/28 COMP 65/11/22 COMP
65/06/28 0.300 2.200 65/11/22 1.270 15.000
65/07/05 COMP 65/11/29 COMP
65/07/05 0.110 3.600 65/11/29 0.250 12.000
65/07/11 COMP 65/12/06 COMP
S/O7/19 0.200 5.300 65/12/06 1.080 24.000
65/07/26 COMP 65/12/13 COMP
65/12/13 0.540 29.000
65/07/26 0.090 4.200 65/12/19 CaMP
65/08/01 COMP 65/12/20 0.120 5.200
65/08/01 - 0.100 4.400 65/12/27 COP4P
65/08/09 COMP 65/12/27 - 1.470 32.000
65/08/09 0.100 5.200 66/01/0) COMP
65/08/16 COMP 66/01/03 0.470 20.000
65/08/16 0.130 7.800 66/01/10 COMP
65/08/23 COMP 66/01/10 0.350 36.000
65/08/23 0.290 6.900 66/01/17 COMP
65/08/31 COMP
-------
TABLE A-16 (Cont.) 070046
38 23 15.0 108 45 30.0
(RMN-20) SAN MIGUEL RIVER OWS OF URAVAN
08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA-226 RA—226—D U—NAT 09503 09504 22703
FROM OF DISOLVED ERROR DISOLVED DATE TIME DEPTH RA—226 RA-226—D U-NAT
TO DAY FEET PC/L PC/L UG/L FROM OF DISOLVED ERROR DISOLVED
66/01/17 0.530 20.000 TO DAY FEET PC/L PC/L UG/L
66/01/24 co i p 66/06/13 0.250 5.400
66/01/24 0.530 21.000 66/06/20 COMP
66/01/31 COMP 66/06/20 0.780 8.400
66/01/31 0.930 24.000 66/06/27 COMP
66/02/07 COMP 66/06/27 0.820 9.400
66/02/07 0.750 26.000 66/07/05 COI4P
66/02/14 COMP 66/07/05 2.350 18.000
66/02/14 1.180 40.000 66/07/11 COMP
66/02/21 COMP 66/07/11 1.860 16.000
66/02/21 0.570 20.000 66/07/18 COP4P
66/02/28 COMP 66/07/18 0.940 24.000
66/02/28 0.600 18.000 66/07/25 COMP -
66/03/07 COP4P 66/07/25 0.690 27.000
66/03/07 0.200 8.900 66/07/31 COMP
66/03/14 COP4P 66/07/31 0.310 19.000
66/03/14 0.220 3.800 66/08/08 COMP
‘0 66/03/21 COMP 6Y09/O8 0.960 33.000
66/03/21 0.470 10.000 66/OS/IS COMP - -
66/03/28 coi .i 66/08/15 0.350 46.000
66/03/28 O.1 3.400 66/08/22 COMP
66/04/04 COMP 66/08/22 2.450 76.000
66/04/04 0.220 3.000 66/08/29 COMP
66/04/11 COMP 66/08/29 2.550 42.000
66/04/11 0.320 1.100 66/09/05 COMP
66/04/18 COMP 66/09/05 1.570 29.000
66/04/18 0.250 3.700 66/09/12 COP4P
6b/0 4 / 2 5 COMP 66/09/12 2.750 51.000
66/04/25 0.200 3.000 66/09/19 COMP
66/05/02 COMP - 66/09/19 - 3.630 66.000
66/05/02 0.210 0.800 66/09/26 COMP
66/05/09 COMP 66/09/26 6.370 77.000
66/05/09 0.310 2.200 66/10/03 COMP
66/05/ 16 cO P 66/10/03 1.670 8.400
66/05/16 0.220 0.800 66/10/10 COMP
66/05/24 COMP 66/10/10 1.470 6.700
66/05/24 0.840 1.700 66/10/17 COMP
66/05/30 COMP 66/10/17 4.310 3.600
66/06/06 0.300 3.700 66/10/24 COMP
66/06/13 COMP 66/10/24 2.060 2.700
66/10/31 COMP
-------
TABLE A-16 (Cont.) 070046
38 23 15.0 108 45 30.0
SAN MIGUEL RIVER DWS OF URAVAN
(RMN-20) 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—O U—NAT DATE TIME DEPTH RA—226 RA—226—O U—NAT
FROM OF’ DISOLVED ERROR DISOLVED FROM OF OISOL.VED ERROR DISOLVEO
TO DAY FEET PC/L PC/L LjG/L TO DAY FEET PC/L PC/I. UG/L
66/10/31 1.180 0.700 67/03/20 1.080 17.000
66/11/07 COMP 67/03/27 COMP
66/11/07 9.800 32.000 67/03/27 1.180 4.800
66/11/14 COMP 67/04/03 COMP
66/11/14 3.230 27.000 67/04/02 0.490 10.000
66/11/21 COMP 67/01 .109 COMP
66/11/21 0.980 5.400 67/04/09 1.370 4.000
66/11/28 COMP 67104/16 COMP
66/11/28 24.500 60.000 67/04/16 0.540 7.200
66/12/05 COMP 67/04/23 COMP
66/12/05 3.340 28.000 67/04/23 1.270 1.600
66/12/12 COMP 67/04/30 COMP
66/12/12 2.550 57.000 67/04/30 1.470 7.400
&6/12/ 19 COMP 67/05/06 COMP
66/12/19 2.060 91.000 67/05/06 0.850 2.000
66/12/26 COMP 67/05/13 COMP
66/12/26 0.980 4.000 67/05/14 0.530 1.000
67/01/02 COMP 67/05/21 COMP
o 67/01/02 2.250 5.400 67/05/21 1.180 9.200
67/01/09 COMP 67/05/28 COMP
67/01/09 1.270 3.700 67/05/28 0.930 6.800
67/01/19 COMP 67/06/05 COMP
67/01/16 2.060 8.100 67/06/05 0.310 12.000
67/01/23 COMP 67/06/12 COMP
67/01/23 1.470 17.000 67/06/12 0.570 11.000
67/01/30 COMP 67/06/19 COMP
67/01/30 1.960 16.000 67/06/19 6.470 26.000
67/02/06 COMP 67/06/26 COMP
67/02/06 2.060 6.000 67/06/26 1.570 6.500
67/02/13 COMP 67/07/03 COMP
67/02/13 4.120 3.000 67/07/03 0.570 3.900
67/02/20 COMP 67/07/10 COMP
67/02/20 4.120 8.400 67/07/10 0.240 11.000
67/02/27 COMP 67/07/17 COMP
67/02/27 0.670 17.000 67/07/17 0.520 16.000
67/03/06 COI4P 67/07/24 COMP
67/03/06 1.180 4.000 67/07/24 0.330 15.000
67/03/13 COMP 67/07/31 COMP
67/03/13 1.270 21.000 67/07/31 0.400 21.000
67/03/20 COMP 67/08/07 COMP
-------
TABLE A-16 (Cont.) 070046
38 23 15.0 108 45 30.0
(RMN-20) SAN MIGUEL RIVER Dws or URAVAPI
08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT 09503 09504 22703
FROM OF DISOLvED ERROR DISOLVED DATE TIME DEPTH RA226 RA226D U—NAT
TO DAY FEET PC/I PC/L UG/L FROM OF DISOLVED ERROR OISOLVED
67/08/07 0.350 31.000 TO DAY FEET PC/L PC/L UG/L
67/08/14 COMP 67/12/24 4.610 36.000
67/00/14 0.400 5.300 67/12/31 COMP
67/08/21 COMP 67/12/31 7.060 51.000
67/08/21 0.790 53.000 68/01/07 COMP
67/08/28 COuP 68/01/07 19.600 94.000
67/08/28 0.870 4.200 68/01/14 COuP
67/09/06 COuP 63/01/14 3.530 9.800
67/09/04 0.240 12.000 68/01/21 COMP
67/09/11 COuP 68/01/21 2.55Q 32.000
67/09/11 0.580 38.000 68/01/28 COMP
67/09/18 COMP 68/01/28 5.000 11.000
67/09/18 0.620 6.900 68/02/04 COMP
67/09/25 COMP 68/02/04 9.210 11.000
67/09/25 0.820 12.000 68/O2 11 COMP
> 7/1O/02 COuP 68/02/11 6.080 11.000
67/10/02 0.460 23.000 68/02/18 COMP
67/10/09 COMP 68/02/18 1.860 5.700
67/10/07 0.520 9.800 68/02/25 COMP -
67/10/14 COMP 68/02/25 1.670 4.600
67/10/16 0.470 5.500 68/03/03 COt4P -
67/10/23 COMP 68/03/03 2.350 13.000
67/10/23 1.270 8.900 68/03/10 COuP
67/10/30 COuP 68/03/10 12.740 12.000
67/10/30 0.980 14.000 68/03/17 COuP
67/11/06 COuP 68/03/17 5.390 3.500
67/11/06 1.760 3.500 68/03/24 COuP
67/11/13 COMP 68/03/24 2.450 12.000
67/11/13 2.650 11.000 68/03/31 COuP
67/11/20 COMP 68/03/31 2.160 13.000
67/11/20 4.710 16.000 68/04/07 COuP
67/11/26 COMP 68,04/07 3.140 16.000
67/11/26 1.760 28.000 68/04/14 COMP
67/12/03 COMP 68/04/14 1.370 1.700
67/12/03 1.570 55.000 68/04/21 COMP
67/12/10 COMP 68/04/21 1.860 1.600
67/12/10 5.060 45.000 68/04/28 COuP
67/12/17 COMP 68/04/28 1.080 7.200
67/12/17 5.100 37.000 68/05/05 COMP
67/12/24 Coup 68/05 05 0.390 0.800
68/0S 12 COMP -
-------
TABLE A-16 (Cont.) 070046
38 23 15.0 108 45 30.0
(RMN 20) SAN MIGUEL RIVER DVS OF’ URAVAN
- 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 227o3 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226-D U-NAT
FROM OF DISOLVEL) ERROR DISOLVED FROM OF’ DISOLvED ERROR DISOLVED
TO OAY FEET C/L PC/I UG/L TO DAY FEET PC/I PC/L UG/L
68/05/12 0.350 1.400 68/09/15 1.600 0.100 13.000
68/05/19 COMP 68/09/22 COMP
68/05/19 0.710 2.000 68/09/22 1.ooo 0.lOo 33.000
68/05/26 COMe 68/09/29 COMP
68/05/26 0.370 5.400 68/09/29 0.940 0.070 26.000
68/06/02 COMP 68/10/06 COMP
68/06/02 0.630 0.050 0.800 68/10/06 0.870 0.070 le.ooo
68/06/09 COMP - 68/10/13 COMP
68/06/09 0.360 0.030 1.000 68/10/11 1.200 0.100 29.000
68/06/16 COMP 68/10/20 COMP
68/06/16 0.740 0.050 1.100 68/10/20 0.710 0.030 26.000
68/06/23 COMP 68/10/27 COMP -
68/06/23 2.030 0.090 1.000 68/10/27 2,400 0.100 48.000
68/06/30 COMP 68/11/03 COMP
68/06/30 10 00 68/11/03 4.600 0.200 100.000
CP(T)—01 2.000 0.100 3.300 68/11/10 COMP
68/07/07 10 00 68/11/10 4.400 0.200 25.000
68/07/07 10 00 68/11/17 COMP
CP(T)—01 1.000 0.000 2.200 68/11/17 1.900 0.100 28.000
68/07/14 10 00 68/11/24 COMP
68/07/14 10 00 68/11/24 2.000 0.100 40.000
CP(T)—0) 0.600 0.040 3.000 68/12/01 COMP
68/07/21 10 00 68/12/01 26.000 1.000 260.000
68/07/21 10 00 68/12/08 COMP
CP(T)—01 0.300 0.040 35.000 68/12/08 2.800 0.100 24.000
68/07/28 10 00 68/12/15 COMP
68/07/28 0.130 0.020 8.700 68/12/15 2.800 0.100 29.000
68/08/04 COMP 68/12/22 COMP
68/08/04 0.700 0.040 64,000 68/12/22 6.400 32.000
68/08/11 COMP 68/12/29 COMP
68/08/11 0.690 0.040 36.000 68/12/29 6.900 0.200 23.000
68/08/18 COMP - 69/01/05 COMP
68/08/18 - 0.720 0.040 4.100 69/01/05 3.500 0.200 48.000
68/08/Z5 COMP 69/01/12 COMP
68/08/25 4.300 0.200 21.000 69 01/12 1.400 0.100 35.000
68/09/01 COMP 69/01/19 COMP
68/09/01 5.700 0.200 32.000 69/01/19 1.400 0.100 31.000
68/09/08 COMP 69/01/26 COMP
68/09/08 2.800 0.100 32.000 69/01/26 1.500 0.100 46.000
68/09/15 COMP 69/01/31 COMP
-------
TABLE A-16 (Cant.) 070046
38 23 15.0 108 45 30.0
IriMM ‘)A\ SAN MIGUEL RIVER DWS OF URAVAN
JJu1 .v) 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—O U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/i PC/L UG/L TO DAY FEET PC/L PC/L UG/L
69/02/01 8.900 0.300 26.000 69/07/16 0.310 0.030 3.700
69/02/09 COMP 69/08/20 0.830 0.050 7.800
69/02/09 8.200 0.300 2 .000 69/08/28 0.880 0.050 18.C . O
6 ’02/16 COMP 69/09/04 0.470 0.040 20.000
69/02/16 2.800 0.100 43.000 69/09/11 0.220 0.020 10.000
69/02/23 COMP 69/09/18 0.470 0.040 26.000
69/02/23 3.800 0.100 85.000 69/09/25 3.520 0.130 67e000
69/03/02 COMP 69/10/02 0.820 0.050 7.600
69/03/02 4.000 0.100 83.000 69/10/09 0.730 0.050 7.900
ec.’03/09 COMP 69/10/16 0.870 0.050 7.900
0.500 0.000 17.000 69/10/23 0.730 0.050 7.200
6 /03/16 COMP 69/10/30 0.860 0.050 8.300
69/03/18 0.240 0.020 21.000 69/11/06 0.450 0.040 7.000
69/03/19 0.280 0.030 13.000 69/11/13 1.300 0.100 15.000
69/03/20 0.240 0.020 13.000 69/11/20 1.500 0.100 16.000
69/03/23 3.300 0.100 37.000 69/11/26 0.830 0.050 19.000
L 69/03/30 COMP 69/12/04 4.000 0.200 16.000
0 69/03/30 0.330 0.030 3.600 69/12/11 0.330 0.030 19.000
69/04/06 COMP 69/12/18 0.870 0.050 20.000
69/04/06 0.310 0.030 4.700 69/12/26 1.000 0.100 19.000
69/04/13 COMP - 70/01/09 0.400 0.030 23.000
69/04/13 0.140 0.020 4.000 70/01/15 0.620 0.040 42.000
69/04/20 COMP 70/01/22 0.740 0.050 19.000
69/04/20 0.160 0.020 3.900 70/01/29 0.250 0.030 15.000
69/04/27 COMP 70/02/05 0.220 0.020 12.000
69/34/27 1.510 0.070 11.000 70/02/12 0.370 0.030 17.000
69/05/04 COMP 70/02/19 0.810 0.050 14.000
69/05/04 0.130 0.020 2.100 70/02/26 0.710 0.050 17.000
69/05/11 COHP 70/03/05 0.930 0.050 30.000
69/05/11 0.120 0.010 2.200 70/03/12 1.000 0.060 14.000
69/05/18 COMP 70/03/19 0.890 0.050 16.000
69/05/18 0.140 0.020 3.000 70/03/26 0.790 0.050 14.000
69/05/25 COMP 70/04/02 0.640 0.040 18.000
69/06/01 0.320 0.030 5.000 70/04/09 1.450 0.070 9.400
69/06/08 COMP 70/04/16 1.330 0.070 34.000
69/06/08 1.120 0.100 12.000 70/04/24 0.580 0.040 6.400
69/06/15 COMP 70/05/01 0.210 0.020 3.600
69/06/15 0.190 0.020 23.000 70/05/08 0.910 0.050 17.000
69/06/22 COMP 70/05/15 0.150 0.020 1.900
69/06/22 0.890 0.050 19.000
69/06/29 COMP
-------
TABLE A-16 (Cont.) 070046
38 23 15.0 108 45 30.0
SAN MIGUEL RIVER DWS OF URAVAN
(RMN-20 1 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C 030 2111204
2 0000 FEET DEPTH
- 09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLvED ERROR DISOLVED
TO DAY FEET PC/i PC/I UG/L TO DAY FEET PC/I PC/i UG/L
70/05/22 0.140 0.020 ?.80 0 7 1/02/lI 0.210 0.020 17.000
70/05/28 0.140 0.020 2.600 ‘1/02/18 0.250 0.020 16.000
70/06/04 0.170 0.020 2.400 fl/02/25 - 0.260 0.030 16.000
70/06/11 0.550 0.040 15.000 71/03/03 0.280 0.030 18.000
70/06/18 0.240 0.030 2.300 71/03/11 0.170 0.020 16.000
70/06/25 0.190 - 0.020 2,000 71/03/18 0.330 0.030 23.000
70/07/02 0.200 0.030 4.200 71/03/25 0.330 0.030 2.800
70/07/09 0.490 0.050 16.000 7 /04/01 0.140 0.020 1.800
70/07/16 0.220 0.030 6.600 71/04/08 0,100 0.020 2.800
70/07/24 0.290 0.040 7.100 71/04/14 0.250 0.030 2.500
70/07/30 0.340 0.030 6.300 71/04/23 0.900 0.020 - 6.300
70/08/06 0.210 0.020 8.500 71104/28 0.100 0.020 2.900
70/08/13 0,670 0.050 9.400 71/05/06 0.100 0.020 3.000
70/08/20 0.170 0.020 6.700 71/05/13 0.100 0.020 3.000
70/08/27 0.620 0.040 7.800 71/05/21 0.160 0.020 4.800
70/09/03 0.200 0.020 10.000 71/05/27 0.120 0.020 4.200
70/09/10 0.220 0.020 7.500 71/06/03 1.130 0.060 5.600
70/09/17 0.350 0.030 9,4Q 0 71/06/10 0.120 0.020 3.100
70/09/24 0.200 0.020 5.100 71/06/16 0.170 0,020 2.000
70/10/01 0.180 0.020 6.100 71/06/25 0.120 0.020 1.400
70/10/07 0.220 0.020 13.000 71/07/01 0.130 0.020 2.500
70/10/14 0.160 0.020 24.000 71/07/08 0.500 3.200
70/10/22 0.110 0.020 9.700 71/07/29 COMP - -
70/10/29 0.130 0.020 15.000 71/07/15 0.220 4.100
70/11/05 0.100 0.020 14.000 71/07/22 0.180 2.700
70/11/13 0.110 0.020 8.700 71/07/29 0.280 7.200
70/11/17 0.070 0.010 9.500 71/08/05 0.400 32.000
70/11/20 0.140 0.020 16.000 71/08/13 0.400 14.000
70/11/25 0.200 0.020 21.000 71/08/19 0.500 14.000
70/12/03 0.100 0.020 11.000 71/08/26 0.300 5.000
70/12/10 0.150 0.020 - 12.000 71/09/02 0.200 11.000
70/12/17 0.220 0.020 17.000 71/09/09 0.100 13.000
70/12/22 0.170 0.020 23.000 71/09/16 0.300 22.000
70/12/31 0.350 0.030 20.000 71/09/23 0.600 18.000
71/01/07 0.410 0.030 13.000 71/09/30 2.400 12.000
71/01/14 0.830 0.050 18.000 71/10/07 0.500 3.500
71/01/21 1.100 0.100 19.000 71/10/14 0.200 4.800
71/01/28 0.200 0.020 16.000 71/10/21 0.200 7.500
71/02/03 0.540 0.040 3.900 71/10/28 0.100k 5.000
-------
TABLE A-16 (Cont.) 070046
38 23 15.0 108 45 30.0
(DM11 SAN MIGUEL RIVER DWS OF URAVAN
I IIflLV) 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA-226—o U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLvED
TO DAY FEET PC/L PC/L UG/L ro DAY FEET PC/& PC/L UG/L
71/11/04 0.200 8.500 72/04/06 0.600 13.000
71/11/10 0.400 i2. 00 72/04/13 COMP
71/11/18 0.200 7.500 72/04/13 0.400 8.500
71/11/24 0.200 14.000 72/04/21 COMP
71/11/24 0.700 23.000 72/04/21 0.200 12.000
71/12/02 COMP 72/04/26 COMP
71/12/02 0.100 12.ooo 72/04/26 0.300 10.000
71/12/09 COMP 72/05/04 COMP
71/12/09 0.300 21.000 72/05/04 0.300 11.000
71/12/16 core 72/05/11 COMP
71/12/22 0.500 io.ooo 72/05/11 0.300 17.000
71/12/22 0.300 12.000 72/05/18 COMP
71/12/29 COMP 72/05/18 0.300 6.600
71/12/29 0.300 13.000 72/05/25 COMP
72/01/06 COMP 72/05/25 0.200 4.600
72/01/06 0.300 26.000 72/06/01 COMP
.L 72/01/13 COMP 72/06/01 0.200 2.900
0 72/01/13 0.200 28.000 72/06/08 COMP
72/01/21 COMP 72/06/08 0.200 3.600
72/01/21 0.300 16.000 72/06/15 COMP -
72/01/27 COMP 72/06/15 0.200 5.000
72/01/27 0.200 6.400 72/06/22 COMP
72/02/03 COMP 72/06/22 0.200 6.900
72/02/03 0.300 12.000 72/06/29 COMP
72/02/11 COMP
72/02/11 1.000 20.000
72/02/17 COMP
72/02/17 0.700 5.400
72/02/24 COMP
72/02/24 0.800 8.900
72/03/02 COMP
72/03/02 0.700 10.600
72/03/09 COMP
72/03/09 0.400 11.700
72/03/16 COMP
72/03/16 0.300 8.500
72/03/23 COMP
72/03/23 0.300 10.200
72/03/31 COMP
72/03/31 0.800 31.000
72/04/06 COMP
-------
STATION DESCRIPTION 3818300 108 53 00.0 -.
DOLORES RIVER NEAE BEDROCK
(RMN-21) - 08 COLORADO - - -
COLORADO RIVER BASIN ____
- UPPER COLORADO Sub BASIN — - -
11IMCO3 O 2111204
2 0000 FEET- DEPTH -
RUFR
SYSTIM II III IV V VI VII VIII IX X XI X1I
INDEX 1101001 011940 ______ ____ ______
MILES 1027.10 0O77. 5 . . . . . . . - — - . . ——.—— — - ______
DESCRIPT ION
CRHP NO. RMN—21. ws—60. UMS- b - -
51,U/4, SEC 20, T47 4’ RI8W
SA 4PLE1) AT c OLO - ‘WY 90 BRIO( E NEAR tiEDWOCK, COLO. IN MONTROSE COUNTY
TYPF DATA—kAD; GRAB , 3 plNT WEEK - - - - _____
TYPE FLOW MEA5— I WEIGHT INSTANT
o SAMPLING STARTEL) 10/30/61 AND IS ONGOING - - - - - -
EMAPKS: THE UNION CARI3IDE COt*’ORATIONU ANIUM MILL SOMI. UPSTREAM AT
SLTCK ROCK DISCONTINUED OPERATION IN 1962. TWE RIVER PICKS UP -- -
I RADIOACTIVITY FROM NATURAL SouRCEs BETWEEN GYPSUM VALLEY AND BEDROCK - - -
Number of Samples assayed for Ra—226 through period of record (1961—19Z2): 1c6
Mean Ra—226 concentration for period of record and 2o deviation : 0.48 ± 2.23
Number of Samples assayed for U(total) through period of record ( 1962—1972): JL3
Mean U(total) concentration for period of record and 2a deviation : 8.46 ± i .ic
-------
STATION LOCATION
(RMH-21)
17
H
/
,J 1
A-1O7
-------
TABLE A-17 070041
38 18 30.0 108 53 00.0
(RMN—21) DOLORES RIVER NEAR BEDROCK
08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA-226 RA—226—D U—NAT 09503 09504 22703
FROM OF DISOLVED ERROR DISOLVED DATE TIME DEPTH RA—226 RA—226—D U—NAT
TO DAY FEET PC/L PC/ I. UG/I. FROM OF DISOLVED ERROR DISOL.VED
61/10/30 0.980 TO DAY FEET PC/L PC/I. UG/L
61/11/04 COMP 63/04/29 0.030 0.900
61/11/06 1.000 63/06/01 COMP
61/ti/li COMP 63/06/03 0.500 6.300
61/11/13 0.640 63/06/29 COMP
61/12/02 COMP 63/07/01 0.480 11.000
61/12/04 0.790 63/08/02 COMP
61/12/30 COMP 63/08/06 0.930 31.000
62/01/01 0.510 63/08/30 COMP
62/01/27 co w 63/09/02 0.580 28.000
62/01/29 0.410 63/09/28 COMP
62/03/03 COMP 63/09/30 0.490 35.000
62/03/OS 0.630 63/11/01 COMP
62/03/31 COMP 63/11/04 0.410 14.000
62/04/02 0.210 63/11/30 COMP
62/04/28 COMP 63/12/02 0.550 19.000
62/04/30 63/12/27 COMP
62/06/02 COI4P 63/12/30 0.640 16.000
62/06/04 0.080 64/01/31 COMP
62/06/30 COMP 64/02/03 1.400 16.000
62/07/02 0.290 64/02/28 COMP
62/07/28 COMP 64/03/02 0.520 17.000
62/07/30 0.480 64/03/27 COMP
62/09/01 COMP 64/03/30 0.260 6.800
62/09/03 0.560 64/05/01 COMP
62/09/29 COMP 64/05/04 0.190 2.600
b2/1O/01 0.340 11.000 64/05/29 COMP
62/11/03 COMP 64/06/01 0.200 2 I100
62/11/05 0.510 12.000 64/06/26 COMP
62/12/01 COMP 64/06/29 0.580 11.000
62/12/03 0.490 11.000 64/07/31 COMP
62/12/29 COMP 64/08/03 0.330 8.500
62/12/31 0.480 8.900 64/08/28 COMP
63/02/02 COMP 64/08/31 0.690 21.000
63/02/04 0.190 7.400 64/10/02 COMP
63/03/02 COMP 64/10/05 0.980 29 00
63/03/03 0.590 9.800 64/10/30 COMP
63/03/30 COMP 64/11/02 1.080 30.000
63/04/01 0.150 2900 64/11/27 COMP
63/04/27 COMP 64/11/30 0.410 12.000
65/01/02 COMP
-------
TABLE A-17 (Cont.) 070041
3018 30.0 100 53 00.0
(RfIN 21) DOLORES RIVER NEAR BEDROCK
- 08 COLORADO
COLORADO RIVER BASIN
IWPER COLORADO SUB BASIN
1 1 1 1C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA-226—D U—NAT DATE TINE DEPTH RA—226 RA—226—D U-NAT
FROM OF DISOLVED ERROR DISOLVED PROM OF DISOLVED ERROR DISOLVED
To DAY FEET PC/i,. PC/L. UG/L TO DAY FEET PC/L PC/L UG/L
65/01/04 0.370 11.000 W09/05 0.540 - 12.000
65/01/29 COMP 66/09/30 COMP
65/02/01 0.390 11.000 66/10/03 0.440 12.000
65/02/26 COMP 66/10/28 COMP
65/03/01 0.430 11.000 66/10/31 0.350 13.000
65/04/02 COMP 66/12102 COMP
65/04/05 0.140 2.600 66 12t.05 - 0.400 12.000
65/04/30 COMP 66/12/30 COMP
6S/0 5 103 0.160 0.600 67/01/02 0.530 7.000
65/05/28 COMP 67/01/28 COMP
65/05/31 0.090 1.500 67/01/30 0.200 6.000
65/07/02 COI4P 67I02 24 COMP
65/07/05 0.160 2.500 67/02/27 0.250 6.400
65/07/30 COMP 67/03/31 COMP
> 65/08/02 0.250 5.300 67/04/03 0.250 6.000
L 65/08/27 COMP 67/04/28 COMP
65/08/30 0.580 8.300 67/05/01 0.160 2.700
‘° 65/10/01 COMP 67/05/24 COMP
65/10/04 0.250 5.800 67/05/24 0.350 4.100
65/10/29 COMP 67/08/30 COMP
65/11/01 0.250 7.000 67/07/03 0.980 12.000
65/11/26 COMP 67/07/28 COMP
65/11/29 0.210 4.200 67/07/31 0.450 11.000
65/12/31 COMP 67/09101 COMP
66/01/03 0.160 5.000 67/09/04 0.610 10.000
66/01/28 COMP 67/09/27 COMP
66/01/31 0.210 4.800 67/10/02 0.820 14.000
66/02/25 COMP 67/10/27 COMP
66/02/28 0.140 1.800 67/10/30 0.760 15.000
66/04/01 COMP - 67/12/01 COMP
66/04/04 0.110 1.800 67/12 04 0.530 14.000
66/04/29 COMP 67/12/29 COI4P
66 /05/02 0.080 0.100 68/01/01 0.320 7.400
66/05/27 COMP 68/02/02 COMP
66/05/30 0.210 3.500 6 0/02/05 0.160 7.000
66/07/01 COMP 68/03/01 COMP
66/07/05 0.760 12.000 68/03/04 0.380 8.500
66/07/29 COMP 68/03/29 COMP
66/08/01 0.480 8.600 68/04/01 0.160 3.800
66/09/02 COMP 68/04/26 COMP
-------
TABLE A-17 (Cont.) 070041
38 18 30.0 108 53 00.0
(RMN-21 DOLORES RIVER NEAR BEDROCK
‘ 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C 030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA-226 RA—226-D U—NAT DATE TINE DEPTH RA—226 RA —226—O U-NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC IL PC/L UG/L
68/04/29 0.140 0.020 1.600 70/02/05 0.350 0.030 6.600
68/05/31 COMP 70/02/26 COMP
68/06/03 0.110 0.020 0.800 70/03/05 0.780 0.050 10.000
68/06/28 COMP 70/03/26 COMP -
68/07/01 0.230 0.020 6.200 70/04/02 0.220 0.020 5.300
68/08/02 COMP 70/05/01 COMP
68/08/05 10 00 70/05/08 0.100 0.020 2.000
CP(T)—05 0.380 0.030 3.900 70/05/28 COMP
68/08/30 10 00 70/06/04 0.120 0.020 0.800
68/09/02 0.400 0.000 11.000 70/06/25 COMP -
68/09/28 COI4P 70/07/02 0.560 0.050 12.000
63/09/30 0.540 0.030 18.000 70/07/24 COMP
68/11/01 COMP 70/07/30 0.750 0.050 8.800
68/11/04 0.430 0.030 13.000 70/08/27 COMP
68/11/25 COMP 70/09/03 0.280 0.030 2.900
68/12/02 0.300 0.030 12.000 70/10/01 COMP
L 68/12/27 COMP 70/10/06 0.350 0.030 9.900
68/12/30 0,260 0.090 1.100 70/10/29 COMP -
69/01/31 COMP 70/11/05 0.270 0.030 7.000
69/02/03 0.220 0.020 6.800 70/11/25 COMP
69/02/28 COMP 70/12/03 0.090 0.020 6.100
69/03/03 0.200 0.000 6.700 70/12/31 COMP -
69/03/28 COMP 71/01 107 0.240 0.030 6.500
59/03/31 0.150 0.020 3.900 71/01/28 COMP
69/05/02 COMP 71/02/03 0.160 0.020 3.200
69/05/05 0.070 0.010 9.800 71/02/25 COMP -
69/05/30 COMP 71/03/04 0.170 0.020 2.900
69/06/02 0.080 0.010 0.700 71/04/01 COMP
69/06/27 COMP 71/04/08 0.090 0.020 2.200
69/08/28 0.290 0.030 9.500 71/04/28 COMP
69/09/04 0.500 0.040 17.000 71/05/06 0.080 0.010 0.700
69/09/25 COMP 71/05/27 COI4P
69/10/02 0.790 0.050 17.000 71/06/03 0.080 0.010 0.800
69/10/30 COt4P 71/07/01 COMP
69/11/06 0.300 0.030 5.700 71/07/08 1.200 9.500
69/11/26 COMP 71/07/29 CO uP
69/12/04 0.230: 0.020 4.500 71/08/05 1.500 15.000
70/01/02 COMP 71/08/26 COMP
70/01/09 0.320 0.030 8.500 71/09/02 0.900 21.000
70/01/29 COMP 71/09/30 COMP
-------
TABLE A—17 (Cont.) 070041
38 18 30.0 108 53 00.0
(RMN-2fl DOLORES RIVER NEAR BEDROCK
08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH PA—226 RA—226—D U—NAT
FROM oF DISOLVED ERROR DISOLVED
TO DAY FEET PC/I PC/L UG/L
71/10/07 1.700 15.000
71/10/14 1.400 26.000
71/10/21 0.100K 7.500
71/10/28 13.800 16.000
71/11/04 0.600 14.000
71/11/10 0.700 14.000
71/11/18 0.500 12.000
71/11/24 0.500 26.000
71/12/09 0.200 4.100
71/12/16 0.300 4.300
71/12/22 0.300 8.500
71/12/29 0.200 4.800
72/01/06 0.200 4.600
72/01/13 0.100K 3.300
72/01/21 - 0.200 4.300
72/01/27 0.300 5.900
‘ 72/02/03 0.200 7.800
72/02/17 0.300 5.900
72/02/24 1.100 19.000
72/03/02 0.200 4.100
72/03/09 0.300 1.900
72/03/16 0.200 1.800
72/03/23 0.200 2.600
72/03/31 0.200 2.600
72/04/06 0.200 4.300
72/04/13 0.200 3.300
72/04/21 0.200 2.200
72/04/26 0.200 2.900
72/05/04 0.200 1.600
72/05/11 0.200 3.300
72/05/18 0.200 3. O0
72/05/25 0.100 1.700
72/06/01 0.100 1.200
72/06/08 0.100 1.300
72/06/15 0.200 1.900
72/06/22 0.500 6.400
-------
STATION DESCRIPTION 07n 0 1 0
38 31 45.0 106 So 30.0 - -
(RMN-22) tOMICHI CREEK NEAR GUNNISON
O S COLORADO - - --
COLORADO RIVER BASIN
UPPFR COLORADO RIVER SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH-
RIVER
sysr i I i I TT Iv v vi v ii viii ix x xi xii
INDEX 1101001 0126 o 01 +O
MILES 1101.80 0145.5b 002.30 . . . . . . - . . . — —-
DESCRIPTION
RMN NO. 22
NEI/4, Swim. SEC 11, T49N, Riw
SAMPLEU AT COU’ 4TY BRIObE 1.8 MILES SOUTHWEST OF POST OFFICE IN
(,U iNIS0N AN MIL 5 UI ST EAM OF ITS MOUTtI -
TYPE DATA—RAD, SAL (,RAB
SAMPLING STANTED 11/12/61 AND ENDED 6/30/62
RE 5: TYPE FLOW MLAS—wTR STG REC AT 9i19OoO. STATION
PkOVIDES BACK( ROuND UPSTP EAM OF GUNNISON URANIUM MILL WHICH CLOSED IN
• 19627 - -
.
p
Number of Samples assayed for Ra-226 through period 0 f record (1961—1972): 7
Mean Ra-226 concentration for period of record and 2cr deviation : 0.02 ± 0.02
Number of Samples assayed for U(total) through period of record ( 1962-1972): - -
Mean U(total) concentration for period of record and 2o- deviation ________
No U(total) samples taken
-------
- —,
I
F
kc( SI 1
I
7 T T
/
%
;J
‘N
/ I
OO9
- \ _
r
Go
A-il 3
h
CD
STATION LOCATION
(RMN-22)
I
I
I
--‘-9
/
L
‘-9
0
c
-------
TABLE A—18 070010
38 31 45.0 106 56 30.0
(RMN—22) TOMICP4I CREEK NEAR GUNNISON
08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO RIVER SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U-NAT
FROM OF DISOLvED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L
61/12/11 0.020
61/12/31 COMP
62/01/02 0.020
62/01/27 COMP
62/01/29 0.010
62/03/03 COMP
62/03/05 0.020
62/03/31 COMP
62/04/02 0.040
62/04/28 COMP
62/04/30 0.030
62/06/02 COMP
62/06/04 0.020
62/06/30 COMP
-------
S
STATION DESCRIPTION
38 34 45.0 106 55 20.0 —-- - --------—---- --
GUNNISON RIVER UPS OF GUNNISON
N’JPI-24) - 08 COLORADO - -—- --- — ———_______ -—-----
COLORADO RIVER BASIN
-— - - - - - - UPPER COLORADO SU BASIN -
11 18C030 2111204
- — — — - -- 00OOFEET DEPTH .-- -
RIVER — -
- -- -— SYSTEM II III - IV V VI - VII VIII I X - - X - XI XII -—-
INDEX 1101001 012680
— MILES 1101.80 01S1.S’O——, -- —. - - - . - -- -. - — . —— - ;— -. —--— -—-.—
____ DESCRIPTION
— ____-— — CRPP NO. 1 HMN—24, dW 7I -. - - - - ____________
— - -- CENTER stc 24, TSON. R1W - - -
SAMPLED 3 MILES NOP TH OF GUNNISON AT HWY 135 BRIDGE, 6 MILES UPSTREAM
— - -—- -- --OF CONFLUENCE WITH IOMICHI CREEK-iN GUNNISON COUNTY — ____ __________________ _________
TtPE DATA—RAD; GRAb. 3 PINTS/WEEK
SAMPLING STARTED 12/11/61 AND ENDED 6/30/65 - — ______ ______ ____
RE rARxS: THIS STATION PROVIDES bACKGROU14D RADIOACTIVITY DATA FOR THE
- ----- GUNNISON RIVER UPST LAN FHOM-TIIE-(,UNNISON-MINING-COMPANY-LJRANIUM MILL
WeIICH CLOSED IN 196d -
T PE FLOW MEAS—WT STG REC-AT-09114500-
V
I
.
Number of Samples assayed for Ra—226 through period of record (1961—19 2): 43
Mean Ra—226 concentration for period of record and 20- deviation : 0.06 ± 0.20
Number of Samples assayed for U(total) through period of record (1962—1972): 33
Mean U(total) concentration for period of record and 20— deviation : 1.21 * 1.27
-------
7 7-
14 0/
3
\ (‘
HI
—
S
18/ -
STATION LOCATION
(RMI’1-24)
A- 116
13
i;
Ranch
Lou Jay
Resort
//
1
T
0
‘I
/
L
1
/
/ /
/
/ 783b ______
7789 BM 11/ —, —
781O -
rTT :
// /
/ I / // 19 H (( -
/ / // ( )r_ __
/ I /90O \± N: -j ,
1/ ‘) II / 2
i i __
x’JJ _________
/(
/
‘: :
/
1
/0
/0
0
1
/
/
/
. /
I /
/ / \
-
‘ ( ( -8 39
1 H
// \\\/
° I\ / /\ ‘.L \
\\ \ (7
‘ tadu ’
36 / re :.
- — ? ---i -
1
JHJ
1
//
n ;
0:l1 I
“ 1
£F1 f
-------
TABLE A-19 070011
38 34 45.0 106 55 20.0
GUNNISON RIVER UPS OF GUNNISON
(RMN-24’ 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
11 18C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA226D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLvED ERROR DISOLVED
TO DAY FEET PC/I .. PC/L UG/L TO DAY FEET PC/I PC/L UG/L
61/12/11 0.030 63/08/06 0.050 0.000
61/12/31 COMP 63/08/30 COMP
62/01/02 0.050 63/09/03 0.040 0.600
62/01/27 COMP 63/09/27 COMP
62/01/29 0.070 63/09/30 0.030 1.100
62/03/03 COMP 63/11/01 COr4P
62/03/05 0.060 63/11/04 0.060 0.100
62/03/31 COMP 63/11/30 COMP
62/04/02 0.040 63/12/02 0.060 2.500
62/04/28 COMP 63/12/28 COMP
62/04/30 0.040 63/12/30 • 0.050 1.300
62/06/02 OMP 64/01/31 COMP
62/06/04 0.040 64/02/03 0.110 1.300
62/06/30 COMP 64/02/28 COMP
62/07/02 0.020 6 /03/02 0.050 0.700
62/07/28 COMP 64/03/27 COMP
62/07/30 0.030 64/0 /30 0.010 1.500
• 62/09/01 COMP 64/05/01 COMP
62/09/03 0.680 64/05/04 0.030 1.500
62/09/29 COMP 64/05/29 COMP
62/10/01 0.050 1.300 64/06/01 0.050 0.600
62/11/03 COMP a ’OG/26 COMP
62/11/09 0.040 1.200 i -/06f 9 0.080 1.000
62/12/01 COMP 64/07/31 COMP
62/12/03 0.060 1.900 64/08/03 0.040 1.400
62/12/29 COMP 64/08/28 COMP
62/12/31 0 n50 2.600 64/08/31 0.050 1.200
63/02/02 COMP 64/10/02 COMP
63/02/04 0.040 1.200 64/10/05 0.060 1.700
63/03/02 COMP 64/10/30 COMP
63/03/04 0.080 0.700 64/11/02 0.060 1.300
63/03/30 COMP 64/11/27 COMP
63/04/01 0.030 0.500 64/11/30 0.080 1.900
63/04/27 COMP 65/01/02 COMP
63/04/29 0.030 0.900 65/01/04 0.030 1.700
63/06/01 COMP 65/01/29 COMP
63/06/03 0.040 0.600 65/02/01 0.050 1.400
63/06/29 COMP 65/02/26 COMP
63/07/01 0.050 1.000 65/03/01 0.050 1.400
63/08/02 COMP 65/04/02 COMP
-------
TABLE A—19(Cont.) 070011
3B 34 45.0 106 55 20.0
GUNNISON RIVER UPS OF G3JP4PIISON
(RMN-24) 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1 118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U-NAT
FROM OF DISOLVED - ERROR DISOLVED
TO DAY FEET PC/L PC L UGIIL
65/04/05 0.010 0.900
65/O4 3O COMP
65/05/03 0.050 0.300
65/05/28 COMP
65/05/31 0.040 ?.500
65/06/30 COMP
-------
STATION DESCRIPTION 070012
3I 31 15.0 lOb 59 30.0 -
(RMN-25) GUNNISON RIVER DWS OF GUNNISON
Od COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB HASIN
1I1MCO3O 2111204
2 0000 FEET—DEPTM - -
REVFR -
SYSTEM II III IV V VI VII VIII I X X XI XII -
INDEX 1101001 O12b 0
MILES 1101.80 0144.50 . . . . . . . . . --— - —- —--
DESCRIPTION
CRPP NO. RMN—25, BWS—70
SWI/4, SWI/4 , SEC 8. T49N,R1w
SAMPLED SOUTHWE5I OF GUNNISON AT COUNTY ROAD BRIDGE, 11/2 MILES FROM
THE CONFLUENCE WITH Iok$ICH I CRLLK IN GUNNISON - -
TYPE DATA—RAt); (,P AB, 3 PINTS/WEEK
SAMPLING STARTED 12/11/61 AND ENDED 6/30/f,s
TYPE FLOW MEAS—W1 STGREC, 09119000 PLUS 09114500
I - -
— -— ---- - — - — — - - - - -- - - -- - —— —-- - -— _.________ - - — - -
d -
9
Number of Samples assayed for Ra—226 through period of record (1961—19Z2): Li6
Mean Ra—226 concentration for period of record and 2a- deviation : 0.04 ± 0.06
Number of Samples assayed for U(total) through period of record (1962—1972): 33
Mean tJ(total) concentration for period of record and 2o deviation : 2.26 ± 2.10
-------
50 N.
49 N.
32’30
,/7
_I ‘
/ I
76 ic
\\
10
c
/
U 000
FEET
4264
STATION LOCATION
A- 120
(RMN-25)
-------
TABLE A-20 070012
38 31 15.0 106 59 30.0
GUNNISON RIVER DWS OF GUNNISON
(RMN-25) 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/i PC/L UG/L TO DAY FEET DC/i PC/i UGh
61/12/11 0.040 63/04/29 0.060 O.40 0
61/12/31 COMP 63/06/01 COMP
62/01 02 0.030 63/06/03 0.’ 0 1.000
62/01/27 COMP 63/06/29 COMP
62/01/29 0.060 63/07/01 0.050 0.600
62/03/03 COMP 63/08/02 COMP
62/03/05 0.030 63/08/06 0.040 0.700
62/03/31 COMP 63/08/30 COMP
62/04/02 0.020 63/09/03 0.030 1.500
62/04/28 COMP 63/09/27 COMP
62/04/30 0.010 63/09/30 0.030 1.600
62/06/02 COMP 63/11/01 COMP
62/06/0’. 0.040 63/11/04 0.050 1.300
62/06/30 COMP 63/11/29 COMP
62/07/02 0.020 63/12/02 0.040 3.600
62/07/28 COMP 63/12/28 COMP
I’ ) 62/07/30 0.040 63/12/31 0.030 2.700
62/09/01 COMP 64/01/31 COMP
62/09/03 0.030 64/02/03 0.030 2.900
62/09/08 COP4P 64/02/28 COMP
62/09/10 0.040 64/03/02 0.030 1.800
62/09/15 COMP 64/03/27 COMP
62/09/17 0.210 64/03/30 0.080 2.900
62/09/22 COMP 64/05/01 COMP
62/09/24 0.040 64/05/04 0.030 2.200
62/09/29 COMP 64/05/29 COMP
62/10/01 0.040 3.000 64/06/01 0.060 1.000
62/11/03 COMP 64/06/26 COMP
62/11/05 0.050 2.300 64/06/29 0.060 1.900
62/12/01 COMP 64/07/31 COMP
62/12/03 0.060 2.600 64/08/03 0.040 1.600
62, 12/29 COMP 64/08/28 COMP
62/12/31 0.090 3.200 64/08/31 0.040 2.000
63/02/02 COMP 64/10/02 COMP
63/02/04 0.030 3.200 64/tO/OS 0.050 2.400
63/03/02 COMP 64/10/30 COMP
63/03/04 0.060 2.000 64/11/02 0.030 4.300
63/03/30 COI4P 64/11/27 COMP
63/04/01 0.040 0.900 64/11/30 0.040 4.300
63/04/27 COMP 65/01/02 COMP
-------
TABLE A-20 (Cont.) 070012
36 31 15.0 106 59 30.0
GUNNISON RIVER DWS OF GUNNISON
i RMN-25) 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C03 0 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF OISOLVED ERROR DISOLVED
TO DAY FEET PC/t. PC / I. UGh
65/01/04 0.050 3.600
65/01/29 COMP
65/02/01 0.030 3.700
65/02/26 COMP
65/03 01 0.030 3.200
bS/04/O1 COMP
65/04/05 0.030 2.200
65/04/30 COMP
65/05/03 0.030 1.600
65/05/28 COMP
65/05/31 0.030 2.400
65/06/30 COMP
-------
STATION DESCRIPTION 070013
3 41 00.0 108 5 3 45.0
, DOLORES RIVER NtAW GATEWAY
RMN—26) -- 08 COLORADO --- —--- ------ - — --- --- --
COLORADO RIVER BASIN
- UPPER COLORADO SUB BASIN - - -- - - - - -
111i C030 2111204
- - - -2 0 00 0FEET-DEPTH—-----—----
RIVER
- SYSTEM II III IV V VI ViI VU! IX x X x i i — ------ -
INDEX 1101001 011940
MILES 1027.10 0031.10 --—. -- - —.- - - . --- - . - - . -—-- . . —- ---. —--— . -- -.-——-—-—— ——_____ ———-—- - _______
OESCRIPT ION
- -- - CR P NO. RMN—26, WS—67 , USGS—09—179500 - - ____ - - - --
Swl/4. SW1/4. SEC 15, T51N, R19W
SAMPLED AT HWY 1’.1 F4RIDGE NEAR GATEWAY, COLORADO IN MESA COUNTY
— TYPE DATA—RAD, RACT GRAS, 3 PINTS/WEEK - — -- ________
SA’IPLING STARTED 10/30/61 AND IS ONGOING
— -- - -— -— - - - REMARKS: THIS STATION PROVIDES RADIOACTIVITY -DATA FOR THE DOLORES RIVER— — - -- —--- - - -
N) DOWNSTREAM FROM THE URANIUM MILLS locArED AT URAVAN, NATURITA AND SLICK
- —- ROCK, COLORADO ---- -- -- ___ -
T 7 Pe. FLOW MEAS—WTR STG REC AT 09180500 NEAR CISCO, UTAH
S
Number of Samples assayed for Ra-226 through period of rec?rd(1961_1972). 200
Mean Ra-226 concentration for period of record and 20- deviation : 0.95 1.42
Number of Samples assayed for U(total) through period of record ( 1962-1972); 176 8
Mean U(total) concentration for period of record and 2a deviation : 13.89 21.8
-------
7 J t r J
c : ; ’ 4 fh J I 1 ) ?
- - _: 0 L c _ _\ 72 ”
\
i ; , / I r
(i I I
j ?i J A
;I I I ( / I
j L L 45
)/i
i: J 11
I’
4
STATION LOCATION
(RMN-26)
A-124
-------
TABLE A—21 070013
36 41 00.0 108 58 45.0
DOLORES RIVER NEAR GATEWAY
(RMN-26) 08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA-226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLvED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/L PC/L UG/L
61/10/30 0.040 62/09/26 0.730
61/12/02 COMP 62/09/27 COMP
61/12/04 0.890 62/09/28 0.650
61/12/30 COMP 62/09/29 COMP
62/01/01 1.300 62/10/01 0.600 16.000
62/01/27 COMP 62/10/06 COMP
62/01/29 1.000 62/10/0 0.810 2.200
6 /03/03 COMP 62/10/1: COMP
62/03/05 0.790 62/10/15 0.710 15.000
62/03/31 COMP 62/10/20 COMP
62/04/02 0.540 62/10/22 0.480 17.000
62/04/28 COMP 62/10/27 COMP
62/04/30 0.710 62/10/29 0.600 4.600
62/06/02 COMP 62/11/03 COMP
62/06/04 0.810 62/11/05 0.790 2.300
62/06/30 COMP 62/11/10 COMP
: 62/07/02 1.400 62/11/12 0.750 1.300
Ui 62/07/28 COMP 62/11/17 COMP
62/07/30 2.000 62/11/19 0.790 4.100
62/09/01 COMP 2/11/24 COMP
62/09/03 0.050 02/11/26 0.800 4.300
62/09/04 COMP 62/12/01 COMP
62/09/05 2.800 62/12/03 0.730 2.300
62/09/06 COMP 62/12/08 CaMP
62/09/07 2.700 62/12/10 0.790 1.700
62/09/08 COMP 62/12/15 rOMP
62/09/10 3.300 62/12/17 1.900 1.900
62/09/11 COMP 62/12/22 COMP
62/09/12 3.000 62/12/24 1.460 7.100
62/09/13 COMP 62/12/29 COMP
62/09/14 3.300 62/12/31 1.050 5.600
62/09/15 COMP 63/01/uS COMP
62/09/17 2.800 63/01/07 1.240 6.900
62/09/18 COMP 63/01/13 COI4P
62/09/19 2.900 63/01/14 1.540 10.000
62/09/20 COMP 63/01/19 COMP
62/09/21 2.200 63/01/21 1.160 14.000
62/09/22 COMP 63/01/26 COMP
62/09/24 0.740 63/01/28 1.630 23.000
62/09/25 COMP 63/02/02 COMP
-------
TABLE A-21 (Cont.) 070013
38 41 00.0 108 58 45.0
DOLORES RIVER NEAR GATEWAY
(RMN—26) 06 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT 09503 09504 22703
FROM OF DISOLVED ERROR DISOLVED DATE TIME DEPTH RA—226 RA—226—D U-NAT
TO DAY FEET PC/L PC/L UG/L FROM OF DISOLVED ERROR DISOLVED
63/02/04 0.610 20.000 TO DAY FEET PC/L PC/L UG/L
63/02/09 COMP 63F06/ 4 0.910 3.200
63/02/11 0.960 24.000 63/06/29 COMP -
63/02/16 COMP 63/07/02 - 1.160 15.000
63/02/18 1.000 9.900 63/C8/02 COMP
63/02/23 COMP 63/08/05 0.510 25.000
63/02/25 1.040 3.500 63/08/30 COMP
63/03/02 COMP - 63/09/02 1.340 29.000
63/03/04 1.080 0.800 63/09/27 COMP
63/03/10 COMP 63/09/30 1.750 16.000
63/03/11 1.510 0.100 63/11/02 COMP
63/03/16 COMP 63/11/05 2.230 22.000
63/03/18 1.290 1.300 63/11/29 COMP
63/03/24 COMP 63/12/02 1.700 35.000
63/03/25 0.510 5.500 63/32/26 COMP
j’ 63/03/30 COMP 63/12/30 2.200 28.000
63/04/01 0.430 11.000 64/02/01 COMP
63/04/06 COMP 64/02/04 - 1.800
63/04/08 0.500 12.000 64/02/28 COMP
63/04/14 CaMP 64/03/02 1.650 51.000
63/04/15 0.380 12.000 64/03/28 COMP
63/04/20 COMP 64/03/30 0.810 34.000
63/04/22 0.990 3.000 64/05/01 COMP
63/04/28 COMP 64/05/04 0.480 6.800
63/04/29 0.790 2.900 64/05/28 COMP
63/05/04 COMP 64/06/01 0.510 4.000
63/05/06 0.640 7.000 64/06/26 CaMP
63/05/11 COMP 64/06/29 0.950 13.000
63/05/13 0.490 4.300 64/08/01 COMP
63/05/18 COMP - 64/08/03 0.400 9.200
63/05/20 0.610 4.700 64/08/29 COMP
63/05/25 COMP 64/08/31 1.300 33.000
63/05/27 0.790 2.600 64/10/02 COMP -
63/06/01 COMP 64/10/05 0.750 31.000
63/06/02 0.960 1.400 64 1O/31 COMP
63/06/08 COMP 64/11/02 1.800 50.000
63/06/10 0.930 3.500 64/11/27 COMP
63/06/15 COMP 64/11/30 0.850 33.000
63/06/17 0.960 4.400 65/01/01 COMP
63/06/22 COI4P - 65/01/04 0.840 32.000
65/01/29 COMP
-------
TABLE A-21 (Cont.) 070013
38 41 00.0 108 58 45.0
(RMN-26) DOLORES RIVER NEAR GATEWAY
08 COLORADO
COLORADO RiVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
09503 09504 22703 2 0000 FEET DEPTH
DATE TIME DEPTH RA-226 RA—226—D U—NAT 09503 09504 22703
FROM OF DISOLVED ERROR DISOLVED DATE TIME DEPTH RA—226 RA2260 U—NAT
TO DAY FEET PC/L PC/L UG/L FHOM OF DISOLVED ERROR DISOLVED
65/02/01 1.100 29.000 TO DAY FEET PC/I PC/L UG/L
65/02/26 COMP 66/10/03 2.350 41.000
65/03/02 0.820 22.000 66/10/28 COMP
65/04/03 coMP - 66/10/31 1.960 45.000
65/04/05 0.410 10.000 66/12/02 COMP
65/05/01 COMP 66/12/05 1.370 34.000
65/05/03 0.370 .9OO 66/12/30 COMP
65/05/29 COMP 67/01/02 1.670 28.000
65/05/31 0.310 4.400 67/01/28 COMP --
65/07/02 COMP 67/01/30 2.250 29.000
65/07/05 0.840 6.500 67/02/24 COMP
65/07/31 COMP 67/02/27 0.990 17.000
65/08/02 0.470 9.500 67/03/29 COMP
65/08/27 COMP 67/04/01 - 0.990 14.000
65/08/30 0.650 12.000 67/04/28 COMP
u 65/10/01 cot i p - 67/05/01 0.800 10.000
65/10/04 0.530 14.000 67/05/26 COMP
65/10/30 COMP 67/05/29 0.990 9.500
65/11/01 0.720 12.000 67/06/30 COMP
65/11/27 COMP 67/07/03 0.990 11.000
65/11/29 0.740 13.000 67/07/29 COMP
66/01/02 COMP 67/07/31 0.990 14.000
66/01/04 0.840 19.000 67/09/01 COMP
66/01/29 COMP 67/09/05 10 00
66/01/31 0.980 17.000 CP(T)—12 0.800 0.050 19.000
66/02/25 COMP 67/09/30 10 00
66/02/28 0.440 10.000 67/10/02 10 00
66/04/01 coi .i cPn—12 0.830 0.050 36.000
66/04/04 0.330 6.300 67/10/27 10 00
66/04/30 COMP 67/10/31 10 00
66/05/02 0.350 5.900 CP(T)—12 1.370 0.100 30.000
66/05/27. COMP 67/12/04 10 00 -
66/05/31 0.760 8.000 67/12/06 10 00
66/07/01 COMP CP(T)12 1.270 0.070 32.000
66/07/05 1.760 20.000 67/12/30 10 00
66/07/29 CoiqP 68/01/01 10 00
66/08/01 1.080 31.000 CP(T)12 2.650 0.100 25.000
66/09/03 COMP 68/02/02 10 00
66/09/05 1.860 43.000 68/02/05 10 00
66/09/30 COMP CP(T)—12 3.720 0.200 31.000
68/03/01 10 00
-------
TABLE A-21 (Cont.)
(RMN—26) 070013
38 41 00.0 108 58 45.0
DOLORES RIVER NEAR GATEWAY
08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U-NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF , DISOLVED ERROR DISOLVEO FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC /L UG/L TO DAY FEET PC/L PC/L UG L
68/03/05 10 00 69F 11/06 0.730 0.050 11.000
CP(T)—04 2.840 0.100 23.000 69/11/26 CORP
68/03/30 10 00 69/12/04 0.700 0.050 13.000
68/04/01 10 00 69/12/26 CORP
CP(T)—12 0.760 0.030 15.000 70/01/09 1.020 0.060 16.000
68/04/27 10 00 70/01/29 CORP
6 /04/29 10 00 70/02/05 0.610 0.040 12.000
CP(T)—18 0.210 0.030 5.700 70/02/26 CORP
68/05/31 10 00 70/03/05 0.050 16.000
68/06/04 0.420 0.030 6.000 70/03/26 CORP
68/06/29 CORP 70/04/02 0.860 0.060 10.000
68/07/01 10 00 70/05/01 CORP
CP(T —06 0.840 0.050 8.200 70/05/08 0.170 0.020 2.700
68/08/02 10 00 70/05/28 CORP
68/08/05 0.900 0.050 15.000 70/06/04 0.340 0.030 3.600
68/08/30 COMP 70/06/25 CORP
68/09/02 3.500 0.100 32.000 70/07/02 0.690 0.050 7.500
68/09/28 CORP 70/07/24 CORP
68/09/30 2.100 0.100 36.000 70/07/30 0.510 0.040 8.800
68/11/02 COMP 70/08/27 CORP
68/11/04 1.500 0.100 24.000 70/09/03 0.510 0.040 7.600
68/11/30 CORP 70/10/01 CORP
68/12/02 1.700 0.100 40.000 70/10/07 0.550 0.040 13.000
68/12/28 CORP 70/10/29 CORP
68/12/30 2.000 0.100 23.000 70/11/05 0.410 0.030 16.000
69/02/01 CORP - 70/11/25 CORP
69/02/03 1.700 0.100 30.000 70/11/17 0.520 0.040 2.200
69/03/01 COMP 70/21/18 0.510 .0.040 5.800
69/03/03 1.100 0.100 22.000 70/12/03 0.520 0.040 13.000
69/03/29 CORP 70/12/31 CORP
69/03/31 0.430 0.030 6.900 71/01 07 0.680 0.050 10.000
69/05/03 COMP 71/01/28 CORP
69/05/05 0.300 0,030 4.200 71/02/03 0.510 0.040 10.000
69/05/31 CORP 71/02/25 CORP
69106/03 0.860 5.000 8.400 71/03/04 - 0.690 0.050 11.000
69/06/27 CORP 71/04/01 CORP
69/08/28 0.690 0.050 37.000 71/04/08 0.230 0.020 4.200
69/09/04 0.730 0.050 18.000 71/04/28 CORP
69/09/25 CORP 71/05/06 0.230 0.020 3.100
69/10/02 9.600 0.300 22.000 71/05/27 CORP
69/10/30 CORP
-------
TABLE A-21 (Cont.) 070013
38 41 00.0 108 58 45.0
(RMN-26) DOLORES RIVER NEAR GATEWAY
08 COLORADO
COLORADO RIVER BASIN
UPPER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA-226 RA-226—D U—NAT 09503 09504 22703
FROM OF DISOLVED ERROR DISOLvED DATE TIME DEPTH RA—226 RA—226—D U—NAT
TO DAY FEET PC/L PC/L UG/L FROM OF DISOLVED ERROR DISOLVED
71/06/03 0.170 0.020 1.900 TO DAY FEET PC/L PC/L Ub/L
71/07/01 COMP 72/05/11 0.400 6.900
71/07/08 0.220 8.500 72/05/18 0.600 9.700
71/07/29 COMP 72/05/25 0.400 4.100
71/08/05 0.100K 16.000 72/06/01 0.300 4.300
71/09/26 COMP 72/06/08 0.300 5.600
0.700 11.000 72/06/15 0.400 4.600
71/og.’3o COMP 72/06/22 0.500 5.400
71/10/07 1.300 10.000 72/06/29 0.300
71/10/14 0.800 11.000
71/10/21 0.400 11.000
71/10/28 0.400 5.000
71/11/C.4 0.600 15.000
7L’l l/ l O 0.500 12.000
71/11/18 2.000 19.000
71/11/24 0.600
71/12/02 0.500 11.000
co 71/12/09 0.600 8.900
71/12/16 0.600 8.500
71/12/22 0.700 23.000
71/12/29 0.300 6.900
72/01/06 0.700 16.000
72/01/13 - 0.600 5.900
72/01/21 0.500 12.000
72/01/27 0.500 8.200
72/02/03 0.700 20.000
72/02/11 0.600 12.000
72/02/17 0.400 23.000
72/02/28 0.700 18.000
72/03/02 0.500 8.200
72/03/09 0.200 1.100
72/03/16 0.200 2.700
72/03/23 0.100 2.700
72/03/31 0.200 5.400
72/04/06 0.300 11,000
72/04/13 0.200 11.000
72f04/2 1 0.300 5.400
72/04/26 0.400 6.600
72/05/04 0.400 5.900
-------
STATION DESCRIPTION 108 11 15.0
YAMPA RIVER DWS OF HAYBELL
(RMN-28) 08 COLORADO
COLORADO RIVER BASIN
GRFIN RIVER SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
RIVER
SYSTEM II III IV V VI VII VIII IX X XI XII
INDEX 1101001 010670 02380
MILES 0929.90 0342.20 068,00 . . . . . . . .
DESCRIPTION
CRBP NO. RMN—28, BWS-4
NWII4, NW I/4, SEC 21, TiN, R96W
TYPE FLOW MEAS—WTR STG REC AT 09251000 NEAI MAYBELL, COLORADO
SAMPLED AT HWY 318 BRIDGE 7 MILES NORTHWEST OF MAYBELL, COLORADO
TYPE DATA—PAD; GRAB, 3 PINTS/WEEK
CA l SAMPLING STARTED 12/10/61 AND WAS SAMPLED 3 TIMES/MONTH UNTIL 9/8/65
WHEN QUARTERLY SAMPLING STARTED 69/09/08 AND ENDED 05/16/72
REMARKS: THE UNION CARBiDE CORP URANIUM MILL NEAR MAYBELL CLOSED IN 1964
ITS LOCATION IS 25 MILES UPSTREAM ON—A DRY WASH TRIBUTARY TO LAY CPEEK
WHICH JOINS THE YAMPA R 18 MILES UPSTREAM. DURING OPERATION THE MILL
PERIODICALLY RELEASED SMALL AMOUNTS OF EFFLUENT
Number of Samples assayed for Ra—226 through period of record (1961—1972): ‘ .7
Mean Ra—226 concentration for period of record and 2 - deviation : p .pg ± 0.06
Number of Samples assayed for U(tota ) through period of record (1962—1972): i.4 .
Mean U(total) concentration for period of record and 2a deviation : 2.48 •
-------
STATION LOCATION
(RMI4-28)
A- 131
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-------
TABLE A-22 070014
40 32 55.0 108 11 15.0
YAMPA RIVER OWS OF MAYBELL
(RMN-28) 08 COLORADO
COLORADO RIVER BASIN
GREEN RIVER SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/I.. UG/L TO DAY FEET PCIL PC/L UG/L
62/07/02 0.030 64/03/02 0.100 0.900
62/07/28 COMP 64/03/27 COMP
62/07/30 0.100 64/03/30 0.090 7.900
62/08/25 COMP 64/05/01 COMP
62/08/27 0.150 64/05/04 0.060 1.800
62/09/29 COMP 64/05/29 COMP
62/10/01 0.060 2.400 64/06/01 0.050 0.600
62/11/02 COMP 64/06/26 COMP
62/Il/OS 0.100 2.300 64/06/29 0.060 1.700
62/11/30 COMP 64/07/31 COMP
62/12/03 0.100 2.000 64/08/03 0.080 2.400
62/12/28 COMP 64/08/28 COMP
62/12/31 0.100 2.800 64/08/31 0.140 3.500
63/02/01 COMP 64/10/02 COMP
63/02/04 0.080 4.900 64/10/05 0.100 3.500
63/03/02 COMP 64/10/30 COMP
63/03/04 0.060 8.000 64/11/02 0.130 2.900
63/03/29 COMP 64/11/21 COMP
63/04/01 0.060 1.500 64/11/30 0.090 3.600
63/04/26 COMP 65/01/01 COMP
63/04/29 0.080 1.800 65/01/04 0.080 2.300
63/05/31 COMP 65/01/29 COMP
63/06/03 0.050 1.200 65/02/01 0.060 3.200
63/06/28 COMP 65/02/26 CO14P
63/07/01 0.140 4.000 65/03/01 0.090 2.900
63/08/02 COMP 65/04/02 COMP
63/08/05 0.130 3.100 65/04/05 0.060 3.500
63/08/30 COMP 65/04/30 COMP
63/09/02 0.080 1.800 65/05/03 0.030 1.800
63/09/2J COMP 65/05/24 COMP
63/09/30 0.080 2.500 69/09/08 0.060 0.010 3.000
63/11/01 COMP 69/12/02 0.050 0.010 3.200
63/11/04 0.090 0.600 70/02/03 0.060 0.010 4.100
63/11/29 COMP 70/05/12 0.040 0.010 0.700
63/12/02 0.100 2.800 70/08/04 0.050 0.010 1.000
63/12/27 CO uP 70/11/23 0.040 0.010 1.200
63/12/30 0.090 0.800 71/02/23 0.050 0.010 2.600
64/01/31 COuP 71/05/19 0.010 0.010 0.500
64/02/03 0.080 1.900 71/08/24 0.100K 1.000
64/02/28 COuP
-------
-I
CA )
C* )
TABLE A-22 (Cont.) 070014
40 32 55.0 100 U 15.0
YAMPA RIVER DWS OF NAYSELL
08 COLORADO
COLORADO RIVER SASIN
GREEN RIVER SU IASIN
11 18C030 2111204
2 000. FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA-226 RA—226—D U—NAT
FROM OF DISOL.VED ERROR DISOLVED
TO DAY FEET PC/L PC/I. UG/L
71111/30 0. 100K 1.300
72/02/23 0.100K 3.100
72/05/16 0.100K 0.600
-------
STATION DESCRIPTION 490004
38 S4 30.0 110 10 50.0
GREEN RIVER OWS OF GREEN RIVER
- 49 IJ AI.j
COLORADO t IVER BASIN
GRFEN RIVER SUt3 BASIN --
1 118C030 2111204
2 - - 0000 FEETDEPTH - -
RIVER
SYSTEM II III IV V VI VII VIII IX X XI XII
INDEX 1101001 010b70
MILES 0929.90 0h14. O •
DESCRIPT ION
CRMP NO. RMN—29 -
SEI/4, SEC 8, T22S, R16E
SAMPLED 9 MILES DUWNSTREAM FROM THE HWY 6 HRIDGE AT GREEt’S RIVER, UTAH
AT EM) 01 DIRT ROAD ON DIE WEST SIDE, IN EMERy COUNTY —
T ’PE DATA—PM); G 8, 1GAL/WL.EI ; PRIOR TO 4/1/64. GRAB, 3 PINTS/WEEK
SAMPLING STARTLD 7/lb/b2 AM) NDFL) 10/ 8/64 - --
REr ARKS: THE UNION CARBIDE CORP UNANIU,4 MILL AT GREEN RIVER WAS CLOSED
IN 1961 AND IS LOCAItD SEVERAL THOUSAND FEET FROM THE RIVER ON A DRY -
WASH ENTERING TIlE RIVER 8 MIL.E5 UPSTREAM FROM THIS STATION
T YPE FLOW MEAS—WTR ST( REC AT 09315000 AT GREEN RIVER, UTAH -- -
V
Number of Samples assayed for Ra—226 through period of record (1961—19i2): 29
Mean Ra—226 concentration for period of record and 2o deviation : 0.09 * 0.05
Number of Samples assayed for U(total) through period of record (1962-1972): 26
Mean U(total) concentration for period of record and 2o deviation : 5.01 ± 3.01
-------
STATION LOCATION
(RMN-29) A-135
-------
TABLE A-23 490004
38 54 30.0 110 10 50.0
GREEN RIVER DWS OF GREEN RIVER
(RNN—29) 49 UTAH
COLORADO RIVER BASIN
GREEN RIVER SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—O U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L TO DAY FEET PC/I PC/L UG/L
62/07/16 0.080 64/02/03 0.090 4.100
62/07/27 CaMP 64/02/28 COI4P
62/07/31 0.080 64/03/02 0.090 3,900
62/08/31 COMP 64/03/27 COMP
62/09/03 0.050 64/03/30 0.090 6.300
62/09/29 COMP 64/05/01 COMP
62/10/01 0.060 6.000 64/05/04 0.090 3.600
62/11/02 COMP 64/05/29 COMP
62/11/04 0.050 7.300 64/06/01 0.090 3.300
62/11/30 COMP 64/06/26 COMP
62/12/03 0.060 6.200 64/06/29 0.100 3.500
62/12/29 COMP 64/07/30 COMP
62/12/31 0.100 6.600 64/08/03 0.140 5.500
63/01/04 COMP 64/08/24 COMP
> 63/01/09 0.100 5.300 64/09/07 0.080 5.200
63/02/02 COMP 64/09/28 COMP
Ci.’ 63/02/08 0.090 5.100 64/10/05 0.060 4.300
63 02/27 COI4P 64/10/28 COMP
63/03/04 0.090 7.600
63/93/29 COMP
63/04/01 0.080 3.200
63/04/26 COMP
63/04/29 0.080 1.600
63/05/31 COMP
63/06/03 0.100 2.600
63’Ob/30 COMP
0.110 4.800
63/08/02 COMP
63/08/05 0.110 5.500
63/08/30 COMP
63/09/02 0.150 6.100
63/09/27 COMP
63/09/30 0.130 7.400
63/11/01 COMP
53/11/04 0.090 5.400
63/11/27 COMP
63/ 2/O2 0.060 5.000
63/12/27 COMP
63/12/30 0.060 5.000
64/01/31 COMP
-------
STATION DESCRIPTION 030020
32 43 00.0 114 43 00.0
(RMN-30) COLO R AT NRTHRLY US—MEX BOUNDRY
04 ARIZONA
COLORADO RIVER
LOWER COLORADO RIVER
1118C030 6111204
2 0000 FEET DEPTH
RIVEq
SYSTEM I! III IV V VI VII VIII IX X XI XII
INDEX 1101001
MILESO O22.60 . . . . . . . .
DESCRIPTION
RMN—30
NE1/4, NE1/4, SEC 21. TSS, R24W
SAMPLED AT GILA AND SALT RIVER MERIDIAN, IN ARIZONA, VUMA COUNTY AT
NORTHERLY INTERNATIONAL BOUNDRY, 0.5 MILE EAST OF ANDl AOE , 1.1t4ILES
UPSTREAM FROM MORELOS DAM, 1.1MILES DOWNSTREAM FROM ROCKWOOD GATE, AND
6.4MILES DOWNSTREAM FROM GAGING STATION ON COLORADO RIVER BELOW YUMA
CANAL WASTEWAY ON EAST BANK
SAMPLING STARTED 7/30/62 AND ENDED 7/04/72
SAMPLING STARTED 7/30/62 AND IS ONGOING
TYPE FLOW MEAS—WTR STG REC AT 09522000 AT INTERNATIONAL BOUNDARY
Number of Samples assayed for Ra—226 through period of record (1961—1972): 104
Mean Ra-226 concentration for period of record and 2o deviation : 0.15 0.10
Number of Samples assayed for U(total) through period of record (1962—1972): 99
Mean IJ(total) concentration for period of record and 2a deviation : 7.32 ± 3.23
-------
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/ BM 1 4
University of Arizon ,
/ / Agricultural Experimen
/
/
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// ii
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MC • 2T ‘.‘ ____________
STATION LOCATION
(RMN-30)
A-138
-------
TABLE A-24 030020
32 43 00.0 114 43 00.0
COLO R AT NRTHRLY US-HEX BOUNDRY
(RMN-3o) 04 ARIZONA
COLORADO RIVER
LOWER COLORADO RIVER
1118C03 0 6111204
2 0000 FEET DEPTH
09503 09504 2270:, 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLvED ERROR DISOLVED PROM OP DISOLvED ERROR DISOLVED
TO DAY FEET PC/L PC/I. UG/L TO DAY FEET PC/L PC/I. 06/I.
62/07/30 0.160 63/12/30 0.130 7.100
62/08/31 COMP 64/01/31 COMP
62/09/04 0.160 64/02/03 0.110 7.300
62/09/07 COI4F 64/02/28 COMP
62/09/10 0.160 64/03/02 0.240 9.000
62/09/14 COMP 54/03/27 COMP
62/09/17 0.160 54/03/30 0.190 8.200
62/u9/21 COMP 64/05/0 1 COMP
62,09/24 0.160 64/05/04 0.110 7.900
62/09/28 COMP 64/05/29 COMP
62/10/02 0.210 .600 64/06/01 0.160 7.500
62/11/02 COMP 64/06/25 COMP
62/11/05 0.080 8.300 s /o /29 0.250 8.800
62/11/30 COMP 64/ 7/3l COMP
62/12/03 0.140 8.000 64/08/03 0.250 8.100
62/12/28 COMP 64/08/28 COMP
—‘ 62/12/31 0.060 9.500 64/08/31 0.320 8.100
63/02/01 COMP 64/10/02 COMP
63/02/04 0.130 11.000 64/10/05 0.110 9.200
63/03/01 COMP 64/10/30 COMP
63/03/04 0.200 8.800 64/11/02 0.130 9.200
63/03/29 COMP 64/11/21 COMP
63/04/01 0.210 9.200 64/11/30 0.110 8.800
63/04/26 COMP 64/12/31 COMP
63/04/29 0.120 9.600 65/01/04 0.180 7.800
63/05/31 COMP 65/01/29 COMP
63/06/03 0.320 9.200 65/02/01 0.130 8.400
63/06/28 COMP 65/02/26 COMP
63/07/02 0.230 7.200 65/03/02 0.240 9.800
63/08/02 COMP 65/04/02 COMP
63/08/05 0.250 7.900 65/04/05 0.150 8.200
63/08/30 COI4P 65/04/30 COMP
63/09/02 0.200 7.600 65/05/03 0.080 6.500
63/09/27 COMP 65/05/27 COMP
63/09/30 0.140 6.700 65/06/01 0.180 8.600
63/11/01 COMP 5/07/02 CaMP
63/11/04 0.110 5.900 65/07/06 0.230 10.000
63/11/29 COMP 65/07/30 COMP
63/12/02 0.110 7.100 65/08/02 0.250 10.000
63/12/27 COMP 65/08/27 COMP
-------
TABLE A-24 (Cont.) 030020
32 43 00.0 114 43 00.0
COLO R AT NRTHRLY US—MU BOUNDRY
(RMN-30) 04 ARIZONA
COLORADO RIVER
LOWER COLORADO RIVER
1118C030 6111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISULVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L U6/L TO DAY FEET PC/L PC/L UG/L
65/08/30 0.190 9.500 67/05/02 0.130 6.800
65/10/01 COMP 67/05/26 COMP
65/10/04 0.090 11.000 67/05/29 0.200 6.500
65/10/29 COMP 67/06/30 COHP
65/11/01 0.100 6.300 67/07/03 0.220 6.500
65/11/26 COMP 67/07/28 COHP
65/11/29 0.150 6.400 67/07/31 0.200 7.600
65/12/30 COMP 67/09/01 COMP
66/01/03 0.110 4.900 67/09/04 0.120 5.100
66/01/28 COMP 67/09/29 COMP
66/01/31 0.110 6.400 67/10/02 - 0.150 5.800
66/02/25 COMP 67/10/27 COMP
66/02/28 0.110 6.600 67/10/30 - - 0.120 6.000
66/04/01 COMP 67/12/01 COMP
66/04/04 0.180 8.700 67/12/04 0.200 5.600
66/04/29 COMP 67/12/29 COMP
66/05/02 0.120 9.500 68/01/01 0.170 7.200
66/05/27 COMP 68/02/02 COHP
66/05/31 0.180 7.000 68/02/12 0.120 7.400
66/07/01 COMP 68/03/01 COHP
66/07/05 0.220 9.200 68/03/04 0.150 7.500
66/07/29 COMP 68/03/29 COMP
66/08/01 0.220 7.400 68/04/01 0.200 7.900
66/09/02 COMP 68/04/26 COHP
66/09/06 0.200 6.700 68/04/29 - 0.100 6.400
66/09/30 COMP 68/05/29 COMP
66/10/03 0.140 4.300 68/06/07 0.130 0.020 7.700
66/10/28 COMP 68/06/28 COMP
66/10/31 0.130 3.500 68/07/02 0.180 0.020 7.600
66/12/02 COMP 68/08/02 COUP
66/12/05 0.140 5.000 68/08/05 10 00
66/12/30 COUP CP(T)—06 0.220 0.020 5.700
67/01/03 0.160 2.000 68/08/30 10 00
67/01/27 CaMP 68/09/03 0.130 0.010 6.600
67/01/30 0.150 5.900 68/09/27 COUP
67/02/24 CaMP 68/10/04 0.090 0.010 6.800
67/02/27 0.180 7.400 68/11/04 COUP
67/03/31 COMP 68/11/04 0.100 0.010 7.300
67/04/03 0.190 7.400 68/11/29 COUP
67/04/28 COMP 68/12/02 0.110 0.010 7.500
68/12/27 COUP
-------
TABLE A-24 (Cant.) 030020
32 43 00.0 114 43 00.0
(DMM COLO R AT NRTHRLY US—HEX BOUNDRY
r iii — .vj 04 ARIZONA
COLORADO RIVER
LOWER COLORADO RIVER
1118C030 6111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TI’4E DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR D ISOLVED
TO DAY FEET PC,’L PC/I UG/L
68/12/30 0.110 0.020 7.900
69/01/31 CaMP
69/02/03 0.090 0.010 b.800
59/02/28 COMP
6 /O3/03 0.150 0.020 8.800
69/03/28 COMP
69/04/01 0.170 0.020 7.700
69/05/04 COMP
69/05/05 0.100 0.010 8.400
69/05/29 COMP
69/06/02 0.150 0.010 6.400
69/06/27 COMP
69/06/30 0.150 0.020 8.000
6 /08/01 COMP
69/08/04 0.190 0.020 7.000
69/08/29 COMP
. 69/09/23 0.120 0.020 7.000
69/10/21 0.130 0.020 6,000
69/11/20 0.110 0.020 5.500
70/01/23 0.090 0.020 5.700
70/02/19 0.140 0.020 6.300
70/03/19 0.130 0.020 6.600
70/04/24 0.110 0.020 7.400
70/06/19 0.110 0.020 7.500
70/07/24 0.130 0.020 8.400
70/ 0/22 0.080 0.010 3.800
71/01/14 0.030 0.010 6.100
71/04/21 0.150 0.020 8.800
71/07/22 0.170 4.200
71/10/15 0.100 5.000
72/01/21 0.100 4.800
72/04/20 0.100K 6,100
-------
030000
36 Si b3.O 131 35 15.0 - - -
COLORADO RiVER AT PAGE
Q4 ARIZONA - - ____ _____
COLORADO RIVER BASIN
- MIDDLE COLORADO—SAN JUAN SUB BASIN - -- -. — —
11I$C030 2111204
- - - - - 2 -0000 FEET—;DEPTw-— — —-- ——- -
II I IV V VI VI ! VIII I X X XI XII — - - --
S I S S S S
DESCRIPT ION
CRHP NO. 37Y7.0,RMN—i1, USGS—09—380000’ - - - - -
fIE1/4. SW1/4. SEC 24. t41N, R8E
SAMPLED AT PAGE MUNICIPAL WATER INTAIc UNTIL 09/22/69. NOW SAMPLED AT
- - - - - - LEES FERRY. 09380000 - - - - -- ________________ - -
TS’PE DATA—RAD, BACT; 300CC CORP/wEEK
TYPE FLOW MEAS— WTN STG REC AT 09350000 AT LEES FERRY. ARIZONA - ———
SAMPLING STARTED b/06/63 ANI) IS ON O1NG
REMARKS: BACTEKIOLOL,LCAL SAMPLING STARTED FEB. 1968 — —— - - - -
U
S
Number of Samples assayed for Ra—226 through period of record (1961—19Z2): inn
Mean Ra—226 concentration for period of record and 2a deviation : 0.17 i 0.1
Number of Samples assayed for U(total) through period of record (1962—1972): 100
Mean U(total) concentration for period of record and 2a deviation : 6.4 ± Iê..Li7
STATION DESCRIPTION
(RMN-31)
RIVER
- - - - SYSTEM
INDEX 1101001
MILES 0727.10
-b
II
S
-l
.
I . ’ ,
-------
19
‘
c 1 224 / 20
4 82 -
Pockets 0 3 2 /) 0386$
4652 L:: - ’ - 42 5
u
1 JH r T
5’58 - -:
34 c 4O --
‘c - \ ? - 4249
8/ 9 ooO
I
J 7
- - g g st 2 ç
/
/ I- — VABM 3787
24
28 4O29 \4 51
94 p vA8 4 c 4, 2s
- I
i:
2 flj
-------
TABLE A-25 030000
36 51 53.0 111 35 15.0
(DMM ei COLORADO RIVER AT PAGE
E’IuI’—, I) 04 ARIZONA
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA-226 RA—226—O U-NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET C/L PC/L UG/L TO DAY FEET PC/L PC/L UG/L
63/05/06 0.360 13.000 65/01/04 0.050 9.400
63/05/27 COMP 65/01/25 COMP
63f06/01 0.290 11.000 65/02/01 0.210 7.200
63/06/30 COMP 65/02/15 COMP
63/07/01 0.290 9.200 65/03/08 0.210 7.600
63/07/31 COMP 65/03/22 COMP
63108/01 0.250 7.400 65/04/05 0.220 6.800
63/03/31 COI4P 65/04/26 COMP
63/09/01 0.160 7.100 65/05/03 0.250 7.500
oJ/C9/30 COMP /c’5/24 COMP
63/10/07 0.190 7.900 ‘06/ 1 0.220 7.000
63/10/28 COMP 65/06/30 COMP
63/11/04 0.180 8.600 65/07/05 0.120 3.600
63/11/25 COMP 65/07/26 COMP
63/12/02 0.250 8.600 65/08/02 0.160 3.100
63/12/30 COMP 65/08/30 COMP
64/01/01 0.250 8.400 6 /3’ /20 0.200 2.800
. 64/01/31 COMP 6 /09/27 COMP
64/02/03 0.340 10.000 65/10/04 0.100 3.500
64/02/24 COMP 65/10/25 COMP
64/03/02 0.300 7.500 65/11/01 0.130 3.200
64/03/30 COMP 65/11/29 COMP
64/04/01 0.280 11.000 65/12/06 0.160 4.100
64/04/30 COMP 65/12/27 COMP
64/05/04 0.290 9.100 66/01/03 0.150 4.900
64/05/25 COMP 66/01/31 COMP
64/06/01 0.250 9.200 66/02/07 0.140 5.100
64/06/29 COMP 66/02/28 COMP
64/07/06 0.290 11 ,000 66/03/07 0.190 5.200
64/07/26 COt4P 66/03/28 COMP
64/08/03 0.250 10.000 66/04/04 0.190 5.800
64/08/31 COMP ,6/04/25 COMP
64/09/14 0.200 6.900 66/05/02 0.180 3.700
64/09/21 COMP 66/05/16 COMP
64/10/05 0.150 6.500 66/06/01 0.120 4.800
64/10/26 COMP 66/07/01 0.120 3.900
64/11/02 0.200 7.800 66/09/26 0.140 3.900
64/11/30 COMP 66/10/03 0.130 3.700
64/12/07 0.080 7.800 66/10/10 COMP
64/12/28 COMP 66/12/02 4.500
-------
TABLE A-25 (Cont.) 030000
36 51 53.0 111 35 15.0
(PMN_ 1 COLORADO RIVER AT PAGE
‘ ‘ ‘ 04 ARIZONA
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
09503 09504 22703 2 0000 FEET DEPTH
DATE TIME DEPTH RA—226 RA—226—D U—NAT 09503 0950’. 22703
FROM OF DISOLVED ERROR DISOLVED DATE TIME DEPTH RA—226 RA—226—D U—NAT
TO DAY FEET PC/L PC/L UG/L FROM OF DISOLVED ERROR DISOLVED
67/01/13 0.100 5.2oo TO DAY FEET PC/L PC/I UG/L
67/03/01 0.040 6.400 68/09/03 0.180 0.020 5.600
67/06/01 0.070 5.100 68/09123 COMP
67/07/01 0.200 6.600 68/09/30 0.130 0.020 7.200
67/08/01 0.190 6.900 68/10/28 COMP
67/09/01 10 00 68/11/0’. 0.150 0.020 6.800
CP(T)—04 0.200 0.030 4.400 68/11/26 COMP
67/09/30 10 00 68/12/03 0.160 0.020 6.500
67/10/01 10 00 68/12/30 COMP
CP(T)—04 0.180 0.030 5.500 6/Ol/06 0.120 0.010 6.600
67/10/31 10 00 69/01/29 COMP
67/11/01 10 00 69/02/03 0.130 0.010 6.900
CP(T)—04 0.170 0.030 5.600 69/02/24 COMP
67/11/30 10 00 - 69/03/03 0.180 0.020 8.100
67/12/01 10 00 69/03/24 COMP
CP(T)—04 0.150 0.020 5.600 /0 ./01 0.170 0.020 8.300
67/12/31 10 00 69/ 4/28 COMP
i.,, 68/01/01 10 00 69/0 5/05 0.200 0.030 7.700
CP(T)—04 0.130 0.030 6.800 69.’05/26 COMP
68/01/31 10 00 69/06/02 0.300 0.010 5.900
68/02/01 10 00 69/06/23 COMP
CP(T)—04 0.160 0.020 7.400 69/07/07 0.150 0.020 6.700
68/02/28 10 00 - 69/07/28 COMP
68/03/01 10 00 69/08/04 0.100 0.020 5.300
CP(T)—04 0.150 0.030 7.400 69/08/25 COMP
68/03/31 10 00 69/09/01 0.140 0.020 5.100
68/04/01 10 00 69/09/22 COMP
CP(T)—04 0.200 0.020 7.000 69/10/21 0.110 0.020 5.800
68/04/30 10 00 69/11/20 0.100 0.020 5.500
68/04/2910 00 69/12/15 0.120 0.020 5.000
CP(T)—05 0.170 0.020 7.900 70/01/20 0.120 0.020 6.100
68/05/27 10 00 70/02/15 0.130 0.020 5.500
68/06/03 10 00 70/03/18 0.160 0.020 7.800
CP(T)—03 0.160 0.020 8.300 70/04/20 0.140 0.020 7.500
68/06/24 10 00 70/05/19 0.110 0.020 5.900
68/07/01 0.1S O 0.020 6.100 70/06/16 0.120 0.020 5.900
68/07/29 COMP 70/07/17 0.140 0.020 6.600
68/08/05 10 00 70/08/18 0.130 0.020 5.500
CP(T)—04 0.230 0.020 3.700 70/09/29 0.110 0.020 8.900
68/08/26 10 00 70/10/19 0.130 0.020 6.400
-------
TABLE A-25 (Cont.) 030000
36 51 53.0 111 35 15.0
(RMN-31 COLORADO RIVER AT PAGE
I 04 ARIZONA
COLORADO RIVER BASIN
MIDDLE COLORADO—SAN JUAN SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/i. PC/L UG/L
70/11/16 0.120 0,020 4.400
70/12/29 3.600
71/O]/11 0.100 0.020 4.100
71/02/22 0.110 0.020 5.000
71/03/15 0.130 0.020 5.100
71/04/28 0.150 0.020 7. Soo
71/05/21 0.140 0.020 5.200
71/06/25 0.150 0.020 4.500
71/07/30 0.190 3.900
71/08/30 0.200
71/09/30 0.200 2,900
71/12/27 0.200 2.600
72/01/04 0.100 4.600
72/03/20 0.100 6.400
72/04/20 0.200 5.900
72/05/12 0.400 16.000
72/06/27 0.200
-------
310000
STATION DESCRIPTION 36 00 40.0 114 44 40.0
COLORADO RIVER NR BOULDER CITY
(RMN 32) 32 3ONEVADA
COLORADO RIVER
LOWER MAIN STEM
1118C030 77777777
2 0000 FEET DEPTH
RIVER
SYSTEM II III IV V VI VII VIII IX X XI XII
INDEX 1101001
MILES O356.1O . . . . . . . . .
DESCRIPTION
RMN—32, USGS—09—421500
SW1/4e SW1/4, SEC 3 T3ON, P23W
SAMPLED 0.3MILE DOWNSTREAM OF HOOVER DAM POWERHOUSE ON THE WEST BANK
TYPE DATA—RAD
SAMPLING STARTED 3/11/63 AND IS ONGOING BY REGION IX
TYPE FLOW MEAS—WTR STG REC 0.BMI. DOWNSTREAM OF 09421500, HOOVER DAM
Number of Samples assayed for Ra-226 through period of record (1961-1972): 96
Mean Ra-226 concentration for period of record and 2o- deviation : 0.29 ± 0.21
Number of Samples assayed for U(total) through period of record (1962—1972): 96
Mean U(total) concentration for period of record and 2o deviation : 7.69 2.66
-------
5 ,
14 4’S’ ! 65
P. 3 W.
?(INGMAN (U.S 66)73 MI.
21
31
22 S.
STATION LOCATION
(RMN-32)
A- 148
-------
TABLE A-26 310000
36 00 40.0 114 44 40.0
COLORADO RIVER MR BOULDER CITY
(RMN—32) 32 3ONEVADA
COLORADO RIVER
LOWER MAIM STEM
1118C030 77777717
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U—NAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UC’/L TO DAY FEET PC/L PC/I UG/L
63/03/11 0.380 10.000 64/11/02 0.330 8.800
63/03/29 COMP 64/11/27 COMP
63/04/01 0.380 8.800 64/11/30 0.350 11.000
63/04/26 COMP 65/01/01 COP4P
63/04/29 0.360 8.000 65/01/04 0.340 8.500
63/05/31 COMP 65/01/29 COMP
63/06/03 0.400 7.800 65/02/02 0.300 9.500
63/06/28 COMP 65/02/26 COMP
63/07/01 0.310 7.400 65/03/01 • 0.380 10.000
63/08/02 COMP 65/04/02 COMP
63/08/05 0.310 7.000 65/04/05 0.390 9.100
63/08/30 COMP 65/04/30 COMP
63/09/02 0.310 7.900 65/05/03 0.350 8.400
63/09/27 COMP 65/05/28 COMP
63/09/30 0.340 8.600 65/06/01 0.300 9.700
63/11/01 COI4P 65/07/02 COMP
L 63/11/04 0.300 5.600 65/07/06 0.380 9.900
- 63/11/29 COMP 65/07/26 COMP
‘ 63/12/04 0.280 8.100 65/08/02 0.440 9.100
63/12/27 COMP 65/08/23 COHP
63/12/30 0.310 7.400 65/02/30 0.410 11.000
64/01/31 COMP 65/09/27 COMP
64/02/03 0.500 8.600 65/10/04 0.500 9.000
64/02/28 COMP 65/10/18 COMP
64/03/02 0.330 9.000 65/11/01 0.530 8.500
64/03/27 COMP 65/11/22 COMP
64/03/30 0.300 9.600 65/11/29 0.510 8.300
64/04/29 COMP 66/01/03 COMP
64/05/04 0.300 7.900 66/01/07 0.590 8.000
64/05/29 COMP 66/01/24 COMP
64/06/01 0.250 6.900 66/02/14 0.390 7.600
64/06/26 COMP 66/02/28 COMP
64/06/29 0.270 8.900 66/02/28 0.410 6.300
64/07/31 COMP 66/03/28 COMP
64/08/03 0.330 9.200 66/04/04 0.400 8.400
64/08/28 COMP 6/04/25 COMP
64/08/31 0.210 8.800 L6/OS/O 2 0.430 8.900
64/10/02 COMP 66/05/23 COMP
64/10/05 0.330 11.000 66/05/31 0.440 6.000
64/10/30 COMP 66/06/27 COI4P
-------
TABLE A—26 (Cont.) 310000
36 00 40.0 114 44 40.0
(RMN-32) COLORADO RIVER NR BOULDER CITY
32 3ONEVADA
COLORADO RIVER
LOWER MAIN STEM
1 1 18C030 77777777
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D U-NAT 09503 09504 22703
FROM OF DISOLVED ERROR DISOLvED DATE TIME DEPTH RA—226 RA—226—D U—NAT
TO DAY FEET PC/L PC/L UGIL FROM OF DISOLVED ERROR DISOLVED
66/07/05 0.380 7.500 TO DAY FEET PC /L PC#L UG/L
66/07/25 COMP 68/03/04 0.230 6.800
66/08/01 0.400 7.000 68/03/25 COMP -
66/08/29 COMP 68/04/01 0.250 7.200
66/09/06 0.400 7.300 68/04/22 COMP
66/09/26 COMP 68/04/29 0.190 6.500
66/10/03 0.400 6.000 68/05/27 COMP
66/10/24 COMP 68/06/03 0.200 0.020 7.100
66/10/31 0.350 5.000 68/06/24 COMP
66/11/28 COMP 68/07/01 0.230 0.020 6.100
66/12/05 0.250 5.000 68/07/29 COMP
66/12/27 COMP 63/08/05 0,260 0.020 b.500
67/01/03 0.400 6.700 68/08/26 COMP
67/01/23 COMP 68/09/03 0.250 0.020 7.500
67/01/30 0.340 7.100 68/09/22 COMP
67/02/20 COMP 68/09/30 0.170 0.020 8.600
67/02/27 0.360 7.000 68/10/28 COMP
67/03/27 COMP 68/11/04 0.200 0.020 8.900
67/04/03 0.290 7.200 68/11/25 COMP
67/04/24 COMP 63/12/02 0.210 0.020 8.300
67/05/01 0.300 6.400 68/12/23 COMP
67/05/22 COMP 68/12/30 0.180 0.020 8.500
67/05/29 0.310 6.500 69/01/27 COMP
67/06/26 COMP 69/02/03 0.180 0.020 7.600
67/07/03 0.300 6.600 69/02/24 COMP
67/07/24 COMP 69/03/03 0.230 0.020 7.400
67/07/31 0.270 6.900 69/03/24 COMP
67/08/28 COMP 69/04/01 0.180 0.020 7.600
67/09/05 0.290 7.100 69/04/28 COMP
67/09/25 COMP 69/05/05 0.190 0.020 8.100
67/10/02 0.260 7.300 69 05/26 COMP
67/10/24 COMP 69/06/02 0.220 0.020 6.400
67/10/30 0.260 6.800 69F06/23- COMP
67/11/27 COMP 69/06/30 0.200 0.020 6.500
67/12/04 0.350 7.100 69 ,07/28 COMP
67/12/26 COMP 69/08/04 0.290 0.030 6.400
68/01/02 0.250 7.000 w 08/25 COMP
68/01/29 COMP 6 * 109/ 16 0.170 0.020 10.000
68/02/05 0.230 7.800 9/10 /23 0.190 0.020 6.10,
68/03/18 COMP 9 11 17 0.140 0.020 7.400
-------
TABLE A-26 (Cont.) 310000
36 00 40.0 114 44 40.0
(DMPJ COLORADO RIVER MR BOULDER CITY
32 3ONEVADA
COLORADO RIVER
LOWER MAIN STEM
1118C030 77777777
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA-226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED
TO DAY FEET PC/L PC/L UG/L
69/12/08 0.140 0.020 8.200
70/01/20 0.170 0.020 7.800
70/02/16 0.190 0.020 7.400
70/03/16 0.160 0.020 b.500
70/04/21 0.150 0.020 6.400
70/05/01 0.180 0.020 6.800
70/06/16 0.170 0.030 7.600
70/07/21 0.130 0.020 7.600
70/10/19 0.160 0.020 S.600
71/01/12 0.150 0.020 6.900
71/04/19 0.170 0.020 v.400
71/07/20 0.340 4.100
71/10/13 0.100 7.500
72/01/18 0.100 5.900
72/04/18 0.100 6.900
1
U,
-------
STATION DESCRIPTION 050501
34 19 00.0 114 09 00.0
COLD R NWD INTAKE NR PARKER DAM
(RMN-33) 06 CALIFORNIA
COLORADO RIVER BASIN
LOWER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
RI VER
SYSTEM II II I IV V VI VII VIII IX X XI XII
INDEX 1101001
NILESO20 0.6 0 . . . . •
DESCRIPTION
CRAP NO. LMS—44, RMN—33
NW1/4 , SW1/4. SEC 28, T3N. RZ7E
SAMPLED 2 MILES UPSTREAM OF PARKER DAM AT WHITSET INTAKE ON THE WEST
BANK
U,
TYPE DATA—SAL, PEST, RAD
TYPE FLOW MEAS—WTR STG REC AT 09427500 LAKE HAVASU, ARIl —CALIP.
SAMPLING STARTED 1 7/63 AND ENDED 10/1/68
REMARKS: MWD=METROPOLITAN WATER DISTRICT
Number of Samples assayed for Ra—226 through period of record (1961—1922): 70
Mean Ra—226 concentration for period of record and 2a- deviation : o.iz * 0.10
Number of Samples assayed for U(total) through period of record (1962—1972): 70
Mean U(total) concentration for period of record and 2a deviation : 7.79 ± 24
-------
STATION LOCATION
(RMN—33) A-153
AL\
31
H 7 ‘
20
-1--i
I W I L\
2 -‘
I\ \
L I F
MAXIMUM \ EL VATFON
450 \FEE T
33 ;
J/I.
C7 3
) I
_60° / -
0
0
/7
/
__EF U G 2 i IJ
Campgwun &f
ii :
-------
TABLE A—27 050501
34 19 00.0 114 09 00.0
(RMN33) COLO R MWD INTAKE NR PARKER DAM
06 CALIFORNIA
COLORADO RIVER BASIN
LOWER COLORADO SUB BASIN
1118C030 2111204
2 0000 FEET DEPTH
09503 09504 22703
DATE TIME DEPTH RA—226 RA—226—D ti—NAT 09503 09504 22703
FROM OF DISOLVED ERROR DISOLVED DATE TIME DEPTH RA—226 RA-226—D U-NAT
TO DAY FEET PC/L PC /L U(,/L FROM OF DISOLVED ERROR DISOLVED
63/01/07 0.260 9.900 TO DAY FEET PC/L PC/L UG/L
63/02/01 COMP 64/ I3O 0.400 9.400
63/02/04 0.400 11.000 64/10/02 COMP
63/02/20 COMP 64/10/05 0.380 8.600
63/03/03 o. o 11.000 64/10/28 COMP
63/03/28 COMP 64/11/01 0.370 8.900
63/04/01 0.380 9.900 64/11/27 COMP
63/04/26 COMP ./12/O2 0.370 8.500
63/04/29 0.360 8.100 6.4/12/28 COMP
63/05/24 COMP 65/01/04 0.320 9.200
63/06/03 0.360 8.200 65/01/29 COMP
63/06/29 COMP 65/02/01 0.320 8.400
63/07/01 0.340 8.800 65/02/26 COMP
63/08/01 COMP 65/03/03 0.290 10.000
63/08/05 0.340 6.600 65/03/29 COMP
63/08/30 COMP 65/04/05 0.330 9.100
63/09/02 0.310 7.200 65/04/30 COMP
63/09/27 COMP 65/05/03 0.370 8.400
63/10/01 0.340 6.200 65/05/28 COMP
63/10/30 COMP 65/06/02 0.350 8.000
63/11/04 0.360 5.900 65/06/28 COMP
63/11/29 COMP 65/07/01 0.370 11.000
63/12/02 0.390 7.400 65/07/31 COMP
63/12/27 COMP 65/08/11 0.300 5.700
64/01/03 0.330 7.700 65/08/31 COMP
64/01/31 COMP 65/09/01 0.400 6.900
4/02/02 0.310 8.700 65/09/30 COMP
64/02/29 COMP 65/10/01 0.380 6.700
64/03102 0.340 7.900 65/10/31 COMP
64/03/27 COMP 65/11/01 0.380 8.400
64/03/29 0.350 8.100 65/11/30 COMP
64/05/02 COMP 65/12/01 0.390 7.800
64/05/05 0.320 8.800 65/12/31 COMP
64/05/29 COMP 66/01/01 0.290 7.500
6’ /05/31 0.280 7.200 66/01/31 COMP
64/06/25 COMP 66/02/02 0.430 7.500
64/06/28 0.380 7.900 66/02/21 COMP
64/07/31 COMP 66/02/26 0.400 7.800
64/08/04 0.350 8.100 66/03/28 COMP
64/08/25 COMP 66/04/04 0.380 7.600
66/04/25 COMP
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TABLE A—27 (Cont.) 050501
34 19 00.0 114 09 00.0
(RMN-33) COLO R MWD INTAKE NR PARKER DAM
06 CALiFORNIA
COLORADO RIVER BASIN
LOWER COLORADO SUB BASIN
1118C 030 2111204
2 0000 FEET DEPTH
09503 09504 22703 09503 09504 22703
DATE TIME DEPTH RA—226 RA—226D UNAT DATE TIME DEPTH RA—226 RA—226—D U—NAT
FROM OF DISOLVED ERROR DISOLVED FROM OF OTSOLVED ERROR OISOI.VED
TO DAY FEET PC/L PC/L UGIL TO DAY FEET PC/I PC/I UG,’L
66/05/02 0.400 7.700 68/01/01 10 00
66/05/23 COMP CP(T)—04 0.270 0.030 7.300
66/05/30 0.400 7.100 68/01/29 10 00
66/06/27 COMP 68/02/10 10 00
66/07/04 0.430 8.000 CPIT)—02 0.270 0.030 7.600
66/07/25 COMP 68/02/26 10 00
66/08/01 0.390 8.100 68/03/01 10 00
66/08/29 COMP CP(T)—05 0.270 0.030 6.600
66/09/05 0.380 6.000 68/03/31 10 00
66/09/26 COMP 68/04/01 10 00
66/10/03 0.390 6.600 CP(T)—04 0.250 0.030 7.000
66/10/17 COMP 68/04/30 10 00
66/11/07 0.330 5.400 68/05/01 10 00
66/11/29 COMP CP(T)—05 0.2S 0 0.030 7.2 0o
66/12/05 0.350 7.600 68/05/31 10 00
66/12/19 COMP 68/06/01 10 00
67/01/16 0.280 7.500 CP(T)—04 0.180 0.020 7.400
(7 1 67/02/06 0.390 7.200 68/06/30 10 00
C ,,
67/02/27 COMP 68/07/01 10 00
67/03/06 0.370 8.000 CP(T)—04 0.250 0.030 5.700
67/03/27 COMP 68/07/31 10 00
67/04/03 0.330 8.300 68/08/01 10 00
67/04/24 COMP CP(T)—04 0.240 0.010 5.800
67/05/01 0.330 7.300 68/08/31 10 00
67/05/22 COMP 68/09/01 0.300 0.030 7.200
67/05/29 0.340 7.400 68/10/31 0.240 0.020 9.300
67/06/26 COMP 68/10/01 COMP
67/07/03 0.360 6.200
67/07/24 COMP
67/08/01 0.310 7.100
67/08/28 COMP
67/09/04 0.320 6.900
67/09/25 COMP
67/10/02 10 00
CP T)—06 0.310 0.030 6.800
67/10/23 10 00
67/10F30 10 00
CPIT)—04 0.300 0.030 7.400
67/11127 10 00
67/12/11 10 00
CP(T)—02 0.270 0.030 7.100
67/12/25 10 00
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