DERR-1989-008654 - 0901a0688053e19a

PROPERTY COMPLETION REPORT
FOR
MONTICELLO
VICINITY PROPERTY REMEDIAL ACTION
FOR
DOE ID NO: MS-00097-CH
ADDRESS: 217 SOUTH SECOND EAST STREET
MONTICELLO, UTAH 84535
APRIL 1989
Prepared for
Surplus Facilities Management Program
Division of Facilities and Site Decommissioning
Department of Energy
by
UNC Geotech
P.O. Box 14000
Grand Junction, Colorado 81502-5504
Brian Mathis
Program Manager SCANNED
UNC Geotech has been granted authorization to perform remedial action under
the Surplus Facilities Management Program. Remedial action was done in
accordance with the Environmental Protection Agency (EPA) Standards for
Cleanup of Lands and Buildings Contaminated with Residual Radioactive Material
from Inactive Uranium Processing Sites, 40 CFR 192.12, 192.20-23.
MS-00097-CH:PCR-04
TABLE OF CONTENTS
Section Page
1.0 SUMMARY 1
1.1 Basis for Remedial Action 1
1.2 Criteria for Remedial Action 1
1.3 Summary of Remedial Action 2
2.0 OPERATIONS SUMMARY. . 3
2.1 Abstract of Remedial Action Plan 3
2.2 Previously Unidentified Contamination 3
2.3 Unanticipated Items During Remedial Action . 3
2.4 Application of Supplemental Standards 3
3.0 VERIFICATION SUMMARY 4
3.1 Radiological Survey Data 4
3.1.1 Pre-Remedial Action Survey 4
3.1.2 Post-Excavation Survey 4
3.1.3 Radon Decay-Product Concentration (RDC) Measurement ... 4
3.2 Recommendation for Certification 5
Certification Data Summary 5
4.0 APPENDIX 6
i
DOE ID NO.: MS-00097-CH
1.0 SUMMARY
1.1 Basis for Remedial Action
The Monticello Vicinity Properties (MVP) project was accepted into
the Surplus Facilities Management Program (SFMP) with the primary
objective of reducing the potential hazard to the public due to
long-term exposure to low-level radioactivity associated with the
offsite mill tailings derived from the former U.S. Atomic Energy
Commission (AEC) uranium mill.
The original mill, built in 1942, was financed by the United States
Government through its agent, the Defense Plant Corporation, to
provide additional sources of vanadium needed during World War II.
Various government agencies operated the mill until 1947. The AEC
obtained the mill in 1948 and operated it through 1959 under
cost-type contracts to provide both uranium and vanadium. Mill
operations were terminated on January 1, 1960.
The mill processed approximately one million tons of ore during the
AEC operations. Throughout the operating period, tailings from the
Monticello millsite were removed from the site and used for
construction-related activities in the vicinity.
1.2 Criteria for Remedial Action
The SFMP has adopted the "Standards for Remedial Action at Inactive
Uranium Processing Sites" (40 CFR Part 192) as guidelines for all
clean-up activities under the MVP project. These standards were
prepared by the Environmental Protection Agency (EPA) to establish
guidelines for the control of tailings piles and the clean-up of
buildings and'open lands.
The subject property, DOE ID Number MS-00097-CH, located at
217 South Second East Street, Monticello, Utah, was evaluated on the
basis of the EPA standards by the Department of Energy (DOE), which
determined that residual radioactive materials in excess of the EPA
standards were present on the property. UNC Geotech/Grand Junction
Projects Office was notified of the inclusion of this property into
the SFMP program on June 8, 1984, and authorized by the DOE to
perform remedial action as required to bring the property into
conformance with the EPA standards.
1
DOE ID NO.: MS-00097-CH
Summary of Remedial Action
DOE ID No.:
Legal Description:
Property Address:
Property Owner:
Property Category:
Inclusion Survey Contractor:
Inclusion Notification Date:
Remedial Action Contractor:
Radiological & Engineering
Assessment (REA):
Construction Subcontractor:
Pre-Construction Conference
Record:
Notice of Final Completion
Inspection:
Volume of Material
Removed:
Area Cleaned Up:
Property Completion Report
Submitted:
MS-00097-CH
Parcel number M-71-1, north 1/2 Lot 3,
Block 11. Monticello Townsite, City of
Monticello, County of San Juan, State
of Utah
217 South 2nd East Street
Monticello, Utah 84535
San Juan Community Baptist Church

Church (CH)
Not applicable; historical inclusion
by the Department of Energy.
June 8, 1984
UNC Geotech
May 2. 1985
Sonderegger Construction
P.O. Box 1346
Monticello, Utah
August 19, 1986
October 17, 1986
Exterior: 617 cu. yd.
Interior: 0 cu. yd.
1,544 m2
April 1989
DOE ID NO.: MS-00097-CH
2.0 OPERATIONS SUMMARY
2.1 Abstract of Remedial Action Plan
The remedial action plan involved removal of exterior contamination
(Appendix Figure 2.1). Once excavation was complete, the affected
areas were resurveyed for possible remaining contamination and, upon
attaining satisfactory results, were backfilled with uncontaminated
material. The property was restored to a condition comparable to
that which existed prior to remedial action activities.
2.2 Previously Unidentified Contamination
The original radiological assessment identified 590 cu. yd. of
tailings, from 6 inches to 75 inches deep, within the property.
The remedial action process included the removal of 617 cu. yd. of
residual radioactive material, ranging from 6 inches to 75 inches
deep (Appendix Figure 2.1).
The difference between the original assessment and the actual
material removed is shown in Appendix Figure 2.1.
2.3 Unanticipated Items During Remedial Action
None.
2.4 Application of Supplemental Standards
Supplemental standards were not applicable to the tailings removal
activities performed on the property.
3
DOE ID NO.: MS-00097-CH
N SUMMARY
ogical Survey Data
rvey data were acquired according to approved procedures.
Pre-Remedial Action Survey
A radiological survey was conducted by UNC Geotech during
October 1984, as described in the final REA, dated May 1985.
Appendix Figure 2.1 shows the extent of contamination
determined during the pre-remedial assessment and identifies
the areas recommended to undergo remedial action.
Post-Excavation Survey
A ground-level gamma scan with a scintillometer was performed
after the removal of contamination and prior to backfilling.
Following the gamma scan, soil samples representative of the
6-inch-thick soil layer at the bottom of the excavation were
collected. The samples were blended to form composite
samples representing an average over the verification areas
(Appendix Figure 2.1).
Exterior Findings: Surface exposure-rate values determined
during the gamma scan of the ground floor ranged from 13 juVh
to 25 /£R/h(Appendix Figure 2.1). The results of analyses
for Ra-226 in nineteen composite soil samples taken from the
excavated areas ranged from 1.3 pCi/g to 8.4 pCi/g (Appendix
Table 3.1).
Radon Decay-Product Concentration (RDC) Measurement
The annual average RDC was determined to be below the EPA
standard (Appendix Table 3.2). Appendix Figure 2.1 shows the
measurement location in the basement (the lowest habitable
level of the structure).
DOE ID NO.: MS-00097-CH
3.2 Recommendation For Certification
Residual radioactive materials have been removed from this property
to the extent required by the EPA standards (40 CFR, Part 192,
Subpart B, Paragraph 192.12). (See Certification Data Summary
below.)
Therefore, the property located at 217 South 2nd East Street, in
Monticello, Utah, is recommended for certification as required by
the SFMP Program guidelines, and the appropriate record should be
documented.
Applicability
Certification Data Summary
:ss3=s«szs3se;ss&s33sssssss=3
Standards Survey Results
Habitable Structures
Exposure Rate: Shall not exceed 20 pR/h
above background.*
Range for the basement
is 14 pR/h to 17 fiR/h,
and the range for the
portion of the ground
floor not underlain by
the basement is 12 fiR/h
to 15 fiR/h (Appendix
Figure 2.1).
Radon Decay-Product
Concentration:
Annual average shall not
exceed 0.02 WL, to the
extent practicable; and
in no case shall exceed
0.03 WL.
Annual average 0.019 WL
(Appendix Table 3.2).
Land
Radium-226 Concentration
ln Surface Soil:
Shall not exceed 5 pCi/g
above background** in
the 15-cm surface layer,
averaged over 100 m2.
< 5 pCi/g above
background.
Radium-226 Concentration
in Subsurface Soils:
Shall not exceed 15 pCi/g
above background** in any
15-cm-thick soil layer
more than 15 cm below the
surface, averaged over
100 m2.
The soil sample
results ranged
from 1.3 pCi/g to
8.4 pCi/g (Appendix
Table 3.1).
•The background exposure rate is approximately 17 jttR/h.
**The background radium-226 concentration is approximately 2.0 pCi/g.
5
DOE ID NO.: MS-00097-CH
4.0 APPENDIX
Appendix Tables:
Table 3.1 Post-Excavation Sample/Measurement Results
Table 3.2 Radon Decay-Product Concentration (RDC)
Measurement Results
Appendix Figure:
Figure 2.1 Exterior Extent of Contamination - RADIOLOGICAL
AS-BUILT
6
Appendix Table 3.1
Post-Excavation Sample/Measurement Results
DOE ID No.: MS-00097-CH
Address: 217 South 2nd East Street, Monticello, Utah
The analytical uncertainties in the table are reported at the 95-percent
confidence interval. A question mark (?) indicates that the analysis is
semiquantitative because of a low count rate.
Exposure-Rate Soil Sample Ra-226 Potassium Thorium
Area Range (/*R/h) Ticket No. (pCi/g) (pCi/g) (pCi/g)
V-l
V-2
V-3
V-4
V-5
V-6
V-7
V-8
V-9
V-10
V-ll
V-l 2
V-13
V-14
V-15
V-l 6
V-17
V-18
V-19
15
15
15
14
14
15
15
15
15
15
17
15
14
13
14
15
15
15
15
25
19
18
18
18
19
17
18
23
23
23
23
18
18
25
18
20
18
21
MMU 230
MMU 231
MMU 232
MMU 233
MMU 234
MMU 235
MMU 236
MMU 237
MMU 238
MMU 239
MMU 240
MMU 241
MMU 242
MMU 243
MMU 244
MMU 245
MMU 246
MMU 247
MMU 248
3.
1.
2.
2.
2.
1.
4.
2.
8.1
6.6
8.4
6.2
1.9
1.5
6.1
1.3
1.7
2.3
5.9
0.4
0.3
0.3
0.3
0.4
0.3
0.5
0.3
0.9
0.7
0.9
0.3
0.3
0.3
0.6
19.9
20.5
23.3
22.0
20.6
22
22
21
23
22
21.6
20.7
19.1
9.6
18.6
21.8
22.0
23.0
19.3
.6
.8
.3
,1
.9
2
.1
4.9
5.4
5.1
5.0
4.9
8.6
8.3
8.4
9.
9.
.0
.0
9.0
8.6
0.8
1.2
1.1
1.1
1.1
0.
1.
0.
1.
0.
0.
0.
0.
0.
1.3
0.8
1.5
1.0
0.8
0.2
0.3
0.2
0.2
0.3
0.4
+ 0.4
See Appendix Figure 2.1 for the verification areas.
7
Appendix Table 3.2
Radon Decay-Product Concentration (RDC) Measurement Results
DOE ID No.: MS-00097-CH
Address: 217 South 2nd East Street, Monticello, Utah
Instrument Type: Terradex Track EtchR Detector
Detector
Number Start Date End Date
Tracks Per
mm2
Radon
Concentration
(pCi/1)
Average
Working
Level (WL)
316147
316219
316183
11/06/86
11/06/86
11/06/86
11/07/87
11/07/87
11/07/87
27.5
26.6
28.0
3.7
3.5
3.7
0.019
0.018
0.019
Annual Average: 0.019
See Appendix Figure 2.1 for the measurement location.
BGS:12/22/87
MS-00097-CH:PCR-04
REVI00287
8
30
28
28
24 -
22
20
18 -
16
14
12
10
V-
15-25
V-2
I5-I9
V-3
I5-.8
V-4
I4-.8
V-6
,.LJ..,J,,U pIS
•J^^^J.^^j*^^^ ,^y^j^'^^.^if^^^ ^^^^^^^^^^^^^^^
:^^•0^v::LV••••.:'•'."•V•l^•.'•'.•.*•>.•.•J•.'
12
12-15: (GROUND FLOOR 1
;I4-I7j (BASEMENT)
PNE "' STORY ;• CHURCH
•with b:a»«m«nf 14-18
I:::: V-8 V-7
5-18 15-17
12 15
V-9
15-23
15-19
S3;
V-5
14-18
8l fc&S V-5 15.-17 14-25
10
V-13 ••J
14 18
(ROC)
V-17
15-20
V-6
15-18
24
9 d t
'.'•V*' •••»'«*.*•*"*. *.*.•
fo-:: :-:".v.-.v.
_ I iiyil^^
j i••• LEGEND •; ••• •
0 ASSESSED AREA IDENTIFIER
0 AVERAGE DEPTH OF ASSESSED CONTAMINATION
AREA OF ASSESSED CONTAMINANTS
12 -15 POST REMEDIAL ACTION EXPOSURE-RATE RANGE
— BOUNDARY OF EXCAVATION
V-IOi
15-23:
V-l I
17-23
/•••••••:v
6 >f6te'
v-19;
15-21
J..
V-18;
15-18;
VH2
115-23
3C
V-14
13-18
V-2
15-19
VERIFICATION SOIL SAMPLE AREA IDENTIFIER
AND EXCAVATION EXPOSURE-RATE RANGE
12
T
Y
AVERAGE EXCAVATED DEPTH FOR THE DEPOSIT
OF CONTAMINATION
20 : 10
POST REMEDIAL ACTION RADON DAUGHTER
^DC^ CONCENTRATION MEASUREMENT LOCATION
ASSESSED CONTAMINANTS NOT FOUND AT
TIME OF REMEDIAL ACTION
ALL DEPTHS IN INCHES
ALL EXPOSURE-RATES IN pR/b
RADIOLOGICAL AS-BUILT]
FIGURE 2.1
EXTERIOR EXTENT DF CONTAMINA
t
= 20 =40
•FEET
J i ±—L
10 12 14 16 18 20 22 24
""TTiis drawing, prepared for tht Surplus Facilities•"'
Management' Project, is for the sole use of the U.S:
Department of Energy and its contractors. It is not a :
land survey plat or an improvement survey plat and is:.,
not t,o be relied upon for the establishment of jfence, ;
building, or ither future improvement lines. : :
—j i i i i i L
o»rc
HI HKl -m at oceu.».rt
sinaiiT-sr-
*M J
lUIWIT SIT!
vtni'icAnwT"
1 \-
,-5
TTBT™
o.ri
•tVlfKMS
ION
U.S. DEPARTMENT OF ENERGY
1B1BS.6.&. ?/»*• 217 SOUTH 2N0 EAST STREET
2*£ MONTICELLO , UTAH
MTI |1IHM« M
UNC Geotech ,OC»TIOM ,o. MS-0QQ97-CH
0«6. ng 3-B396-G6»HT 6 e>6
2£
2C
2*
2:
2C
1J
1:
26 28 30 32 34 36 38 40 42
1(
OAK RIDGE NATIONAL LABORATORY GRAND JUNCTION OFFICE
RO. BOX 2567
GRAND JUNCTION, COLORADO 81502 OPERATED BY MARTIN MARIETTA ENERGY SYSTEMS, INC.
May 10, 1989
Andrew Wallo III
Division of Remedial Action Projects
Office of Waste Disposal and Remedial Action
Office of Nuclear Energy
U. S. Department of Energy
MS - NE24
Washington, DC 20545
Dear Mr. Wallo:
Verification Statements for Monticello Vicinity Properties
Enclosed please find verification statements and amended property
completion reports for the following properties in Monticello, Utah. These
are the properties which were remediated prior to FY 1988, and therefore
could not be subject to on-site independent verification. Discrepancies
were noted by ORNL within the remedial action completion reports during the
December 1988 Type A technical reviews. The discrepancies have been amended
by UNC. The properties are:
Please call Mary Smuin (FTS 326-6232) of our staff if you have any
questions regarding the general work process of this project.
CAL/MWS/tlb
cc: B. Mathis, UNC
P. Henwood, UNC
G. Grandbouche, DOE/GJPO
W. Murphie, DOE/HQ-DFSD
J. Nelson, WESTON
D. Kozlowski, WESTON
MS00014-RS
MS00097-CH
MS00099-RS
MS00138-RS
MS00150-RM
380 South 3rd East Street
281 East 3rd South Street
416 South Main Street
165 North 1st West Street
217 South Second East Street
Sincerely,
Craig A. Little, Ph.D.
Pollutant Assessments Group
VERIFICATION STATEMENT FOR MS00097-CH, 217 S. 2ND EAST STREET
An independent assessment of remedial action activities at 217 S. 2nd
East Street, Monticello, Utah, has been accomplished by the ORNL Pollutant
Assessments Group (PAG). The purpose of the assessment is to verify the
data supporting the adequacy of the remedial action and to confirm the
site's compliance with DOE guidelines. The assessment included reviews of
data provided in the post-remedial action report, and remedial action plans
and activities as well as verification analysis of archived post-remedial
action soil samples.
A review of procedures and techniques suggests that the procedures used
to develop the data presented in the post-remedial action report are
adequate to characterize the final radiological condition of 217 S. 2nd East
Street, Monticello, Utah, and that based on the data in the post-remedial
action reports, the site conforms to the remedial action criteria for the
Monticello Vicinity Properties (MVP).
DOE ID NO.: MS- 0009? - C H . .
Property Address: 2.1T QouTk SeCOftc/1 East STYeet~
VICINITY PROPERTY CERTIFICATION SUMMARY AND RECOMMENDATION
SUMMARY EVALUATION
U.S. Department
Chem-Nuclear Geotech, Inc. of Energy (VOE)
YES NO NOT TAKEN YES NO NOT TAKEN
Ra-226 is < 5 pCi/g
above background in top
15-cm layer of soil
averaged over 100 ml.
In-situ [X] Lab [ ]
Ra-226 is < 15 pCi/g
above background in any
15-cm layer of soil
more than 15 cm below
the surface averaged
over 100 m2.
In-situ [ ] Lab |>3
Interior gamma is < 20 /jR/h
above background in any
occupied or habitable
structure.
The radon decay-product
concentration in any
occupied or habitable
structure is < 0.02
working levels or, at
most, 0.03 working levels.
Supplemental standards were
applied in accordance with
EPA standard 40 CFR 192.21. [ ] M [ ] ( 1 ty) ( J
Hot spot criteria met as
outlined by U.S. DOE
guidelines for FUSRAP and
SFMP (Rev. 03/02/87). [ ] [ ] [X [ ] [ ] [>]
COMMENTS: *The excavations were backfilled with materials which were measured
at the source showing that the Ra-226 concentrations are in the range of
normal background. Other surface areas were verified on the basis of gamma
exposure rates which do not exceed 30-percent above normal background.
[X]' ( ] [ ] f ] [ ]
[ ] t ) [A] [ ] [ ]
[X] [ 3 t 1
fcxj [ ) [ ]
[ ) [ )
[X] [ ] [ ]
DOE ID NO. : MS- QOO^l- ~ C H
CHEM-NUCLEAR GEOTECH, INC., RECOMMENDATION
Based on the Chem-Nuclear Geotech, Inc., evaluation, I recommend this property
for:
[X] Certification by the Department of Energy.
[ ] Certification by the Department of Energy with the concurrence of the
Nuclear Regulatory Commission because supplemental standards were
applied per 40 CFR 192.21.
7- f-<?/
Date
DOE EVALUATION
p^] Should be certified by the Department of Energy.
[ ] Should be certified by the Department of Energy with the concurrence
of the Nuclear Regulatory Commission because supplemental standards
were applied per 40 CFR 192.21.
Harry A. Pegry
SFMP Manager
Chem-Nuclear Geotech, Inc.
SFMP Certification Official
Department of Energy
Date
7/3*/Sf
OEC se «6
PROPERTY COMPLETION REPORT
FOR
MONTICELLO
VICINITY PROPERTY REMEDIAL ACTION
FOR
DOE ID NO: MS-00099-RS
ADDRESS: 280 SOUTH 3RD EAST STREET
MONTICELLO, UTAH 84535
APRIL 1989
Prepared for
Surplus Facilities Management Program
Division of Facilities and Site Decommissioning
Department of Energy
by
UNC Geotech
P.O. Box 14000
Grand Junction, Colorado 81502-5504
Brian Mathis
Program Manager
UNC Geotech has been granted authorization to perform remedial action under
the Surplus Facilities Management Program. Remedial action was done in
accordance with the Environmental Protection Agency Standards for Cleanup of
Lands and Buildings Contaminated with Residual Radioactive Material from
Inactive Uranium Processing Sites, 40 CFR 192.12, 192.20-23.
MS-00099-RS:PCR-004
TABLE OF CONTENTS
Section Page
1.0 SUMMARY 1
1.1 Basis for Remedial Action. 1
1.2 Criteria for Remedial Action 1
1.3 Summary of Remedial Action 2
2.0 OPERATIONS SUMMARY 3
2.1 Abstract of Remedial Action Plan 3
2.2 Previously Unidentified Contamination 3
2.3 Unanticipated Items During Remedial Action 3
2.4 Application of Supplemental Standards 3
3.0 VERIFICATION SUMMARY 4
3.1 Radiological Survey Data 4
3.1.1 Pre-Remedial Action Survey 4
3.1.2 Post-Excavation Survey 4
3.1.3 Radon Decay-Product Concentration (RDC) Measurement ... 4
3.2 Recommendation for Certification ... 5
Certification Data Summary 5
4.0 APPENDIX 6
i
DOE ID No.: MS-00099-RS
1.0 SUMMARY
1.1 Basis for Remedial Action
The Monticello Vicinity Properties (MVP) project was accepted into
the Surplus Facilities Management Program (SFMP) with the primary
objective of reducing the potential hazard to the public due to
long-term exposure to low-level radioactivity associated with the
offsite mill tailings derived from the former U.S. Atomic Energy
Commission (AEC) uranium mill.
The original mill, built in 1942, was financed by the United States
Government through its agent, the Defense Plant Corporation, to
provide additional sources of vanadium needed during World War II.
Various government agencies operated the mill until 1947. The AEC
obtained the mill in 1948 and operated it through 1959 under
cost-type contracts to provide both uranium and vanadium. Mill
operations were terminated on January 1, 1960.
The mill processed approximately one million tons of ore during the
AEC operations. Throughout the operating period, tailings from the
Monticello millsite were removed from the site and used for
construction-related activities in the vicinity.
1.2 Criteria for Remedial Action
The SFMP has adopted the "Standards for Remedial Action at Inactive
Uranium Processing Sites" (40 CFR Part 192) as guidelines for all
clean-up activities under the MVP project. These standards were
prepared by the Environmental Protection Agency (EPA) to establish
guidelines for the control of tailings piles and the clean-up of
buildings and open lands.
The subject property, DOE ID Number MS-00099-RS, located at
280 South 3rd East Street, Monticello, Utah, was evaluated on the
basis of the EPA standards by the Department of Energy (DOE), which
determined that residual radioactive materials in excess of EPA
standards were present on the property. UNC Geotech/Grand Junction
Projects Office was notified of the inclusion of this property into
the SFMP program and authorized by the DOE to perform remedial
action as required to bring the property into conformance with the
EPA standards.
1
DOE ID No.: MS-00099-RS
Summary of Remedial Action
DOE ID No.:
Legal Description:
Property Address:
Property Owner:
Property Category:
Inclusion Survey Contractor:
Inclusion Notification Date:
Remedial Action Contractor:
Radiological & Engineering
Assessment (REA):
Construction Subcontractor:
Pre-Cohstruction Conference
Record:
Notice of Final Completion
Inspection:
Volume of Material
Removed:
Area Cleaned Up:
Property Completion Report
Submitted:
MS-00099-RS
Parcel Numbers M-75 and M-68-1,
Block 11, Monticello Townsite,
County of San Juan, State of Utah
280 South 3rd East Street
Monticello, Utah 84535

Residential Simple (RS)
Not applicable; historical inclusion
by the DOE
June 8, 1984
UNC Geotech
May 2. 1985
Eldon Ray Contracting
P.O. Box 10
Moab, Utah
August 19, 1986
October 9, 1986
Exterior: 781 cu. yd.
Interior: 0 cu. yd.
1,562 m2
April 1989
DOE ID No.: MS-00099-RS
2.0 OPERATIONS SUMMARY
2.1 Abstract of Remedial Action Plan
The remedial action plan involved removal of exterior and interior
contamination (Appendix Figure 2.1). Once excavation was complete,
the affected areas were resurveyed for possible remaining
contamination and, upon attaining satisfactory results, were
backfilled with uncontaminated material. The property was restored
to a condition comparable to that which existed prior to remedial
action activities.
2.2 Previously Unidentified Contamination
The original radiological assessment identified 615 cu. yd. of
tailings, from 6 inches to 12 inches deep, within the property. The
remedial action process included the removal of 781 cu. yd. of
residual radioactive material, ranging from 10 inches to 16 inches
deep (Appendix Figure 2.1).
The difference between the original assessment and the actual
material removed is shown in Appendix Figure 2.1.
2.3 Unanticipated Items During Remedial Action
None.
2.4 Application of Supplemental Standards
Supplemental standards were not applicable to the tailings removal
activities performed on the property.
3
DOE ID No.: MS-00099-RS
3.0 VERIFICATION SUMMARY
3.1 Radiological Survey Data
All survey data were acquired according to approved procedures.
3.1.1 Pre-Re»edial Action Survey
A radiological survey was conducted by UNC Geotech during
October 1984, as described in the final REA, dated May 1985.
Appendix Figure 2.1 shows the extent of contamination
determined during the pre-remedial assessment and identifies
the areas recommended to undergo remedial action.
3.1.2 Post-Excavation Survey
A ground-level gamma scan with a scintillometer was performed
after the removal of contamination and prior to backfilling.
Following the gamma scan, soil samples representative of the
6-inch-thick soil layer at the bottom of the excavation were
collected. The samples were blended to form composite
samples representing an average over the exterior
verification areas (Appendix Figure 2.1).
Exterior Findings: Surface exposure-rate values determined
during the gamma scan ranged from 14 #R/h to 25 uR/h
(Appendix Figure 2.1). Residual radioactive materials were
left in place around mature fruit trees in Areas V-2, V-6,
V-13, V-14, and V-15. Composite soil samples taken in these
areas ranged from 10.1 pCi/g to 11.8 pCi/g. The resulting
radium-226 concentrations, averaged over 100 m2 areas, ranged
from 2.2 pCi/g to 2.8 pCi/g (Appendix Table 3.2). The
results of analyses for Ra-226 in the remaining 16 composite
soil samples taken from the excavated areas ranged from
1.0 pCi/g to 4.6 pCi/g (Appendix Table 3.1).
Interior Findings: Surface exposure-rate values determined
during the gamma scan ranged ranged from 12 fiR/h to 15 /*R/h
for the remediated portion of the basement, and from 11 jtiR/h
to 15 (iR/h for the rest of the basement (Appendix
Figure 2.1).
3.1.3 Radon Decay-Product Concentration (RDC) Measurement
Based on measurements representing an annual average, the
RDC was determined to be below the EPA standard (Appendix
Table 3.3). Appendix Figure 2.1 shows the measurement
location in the basement (the lowest habitable level of the
structure).
4
3.2 Recommendation For Certification
DOE ID No.: MS-00099-RS
Residual radioactive materials have been removed from this property
to the extent required by the EPA standards (40 CFR. Part 192,
Subpart B, Paragraph 192.12). (See Certification Data Summary
below.)
Therefore, the property located at 280 South 3rd East Street, in
Monticello, Utah, is recommended for certification as required by
the SFMP Program guidelines, and the appropriate record should be
documented.
Applicability
Habitable Structures
Exposure Rate:
Certification Data Summary
:S=S=SSS3S3333SS=SSXSSSSSS3I
Standards
Shall not exceed 20 yR/h
above background.*
Survey Results
Ranges were 12 fiR/h
to 15 pR/h for the
remediated portion
of the basement, and
11 nR/Yi to 15 juR/h
for the rest of the
basement (Appendix
Figure 2.1).
Radon Decay-Product
Concentration:
Land
Radium-226 Concentration
in Surface Soil:
Annual average shall not
exceed 0.02 WL, to the
extent practicable; and
in no case shall exceed
0.03 WL.
Shall not exceed 5 pCi/g
above background** in
the 15-cm surface layer,
averaged over 100 m2.
Annual average
0.009 WL (Appendix
Table 3.3).
< 5 pCi/g above
background. The
results of five
composite soil
samples, averaged
over 100 m2 areas,
ranged from
2.2 pCi/g to
2.8 pCi/g (Appendix
Table 3.2).
Radium-226 Concentration
in Subsurface Soils:
Shall not exceed 15 pCi/g
above background** in any
15-cm-thick soil layer
more than 15 cm below the
surface, averaged over
100 m2.
The results of
16 composite soil
samples ranged
from 1.0 pCi/g
to 4.6 pCii/g
(Appendix Table 3.1)
•The background exposure rate is approximately 15 ^R/h.
**The background radium-226 concentration is approximately 2.0 pCi/g.
5
DOE ID No.: MS-00099-RS
4.0 APPENDIX
Appendix Tables:
Table 3.1 Post-Excavation Sample/Measurement Results
Table 3.2 Calculations of Average Radium Concentration
Over 100 m2 (1076-ft2) Areas
Table 3.3 Radon Decay-Product Concentration (RDC)
Measurement Results
Appendix Figure:
Figure 2.1 Interior and Exterior Extent of Contamination -
RADIOLOGICAL AS-BUILT
6
Appendix Table 3.1
Post-Excavation Sample/Measurement Results
DOE ID No. : MS-00099-RS
Address: 280 South 3rd East Street, Monticello, Utah
The analytical uncertainties in the table are reported at the 95-percent
confidence interval. A less-than sign (<) indicates that the minimum
detection limit based on Compton background was reached.
Exposure-Rate Soil Sample Ra-226 Potassium Thorium
Area Range (^R/h) Ticket No. (pCi/g) (pCi/g) (pCi/g)
EXTERIOR
V-l 14 - 25 MMU 221 1.0 + 0.2 21.0 + 5.0 1.0 + 0.3
V-2* 18 - 25 MMU 222 11.8 + 1.3 18.8 + 4.7 1.0 + 0.3
V-3 14-21 MMU 223 1.2+0.2 19.0+4.6 1.0+0.3
V-4 14 - 19 MMU 224 1.2 + 0.2 20.4 + 4.9 1.1 + 0.3
V-5 14 - 21 MMU 225 1.4 + 0.2 20.8 + 5.0 0.7 + 0.3
V-6* 18 - 21 MMU 251 11.0 + 1.2 22.2 + 5.3 < 0.3
V-7 15 - 23 MMU 252 1.8 + 0.3 20.6 + 5.0 1.0 + 0.3
V-8 14 - 21 MMU 253 1.2 + 0.2 20.4 + 4.9 1.0 + 0.3
V-9 14 - 20 MMU 254 2.1 + 0.3 19.3 + 4.7 0.7 + 0.3
V-10 14 - 21 MMU 255 3.0 + 0.4 18.2 + 4.5 0.8 + 0.3
V-ll 14 - 19 MMU 256 2.1 + 0.3 18.1 + 4.5 0.7 + 0.3
V-12 14 - 20 MMU 258 1.9 + 0.3 20.4 + 4.9 0.7 + 0.3
V-13* 18 - 21 MMU 259 10.5 + 1.2 19.0 + 4.7 < 0.3
V-14* 18-21 MMU 260 10.1+1.1 21.1+5.1 1.2+0.3
V-15* 18 - 21 MMU 261 11.0+1.2 18.9+4.6 1.2+0.3
V-16 15 - 25 MMU 262 3.2 + 0.4 19.8 + 4.7 1.1 + 0.3
V-17 14 - 19 MMU 263 1.8 + 0.3 18.7 + 4.5 1.1 + 0.3
V-18 14-19 MMU 264 3.3+0.4 18.8+4.6 1.2+0,3
V-19 14-25 MMU 265 2.5+0.4 15.6+4.0 1.0+0.3
V-20 14 - 23 MMU 266 4.3 + 0.5 19.3 + 4.7 1.3 + 0.3
V-21 14-25 MMU 267 4.6 + 0.6 18.2 + 4.5 0.8 + 0.3
INTERIOR
V-22 12 - 15 Not applicable
See Appendix Figure 2.1 for the verification areas.
•Composite samples taken of contamination left in place around trees
(Appendix Figure 2.1).
7
Appendix Table 3.2
Calculations of Average Radium Concentration Over 100 m2 (1076-ft2) Areas
DOE ID No.: MS-00099-RS
Address: 280 South 3rd East Street, Monticello, Utah
cavg
Where:
Cp X Ap X 0.5 + (Cr x [538 - (Ap x 0.5)])
538
Cavg = Radium concentration (pCi/g) averaged over a 100 m2 (1076-ft2)
area.
Cp = Concentration of the tailings in the pocket in pCi/g.
Ap = Area of the tailings pocket in ft2.
0.5 = 0.5 ft, or depth interval over which EPA guideline is applied.
Cr = Concentration of the remainder of the 100 m2 (1076-ft2) area.
538 = 538 ft3 or total volume over which the EPA- guideline is
applied.
NOTE: The background radium concentration for this area is approximately
2.0 pCi/g.
Area/ft2
Depth
Interval
(Inches)
Meas./
Sample
Type
Ra-226
Lab
Analysis
(PCi/g)
Ra-226 Cone.
Averaged Over
1076-ft2
(PCi/g)
V-2 / 32 0-6 SS 11.8 + 1.3 2.3
V-6 / 25 0-6 SS 11.0 + 1.2 2.2
V-13/ 102 0-6 SS 10.5+1.2 2.8
V-14/ 41 0-6 SS 10.1 + 1.1 2.3
V-15/ 31 0-6 SS 11.0+1.2 2.3
Measurement Type: SS = Soil Sample
Therefore, the radium concentration does not exceed the EPA standard of
7 pCi/g for the surface soil layer or 17 pCi/g for subsurface soil layers.
8
Appendix Table 3.3
Radon Decay-Product Concentration (RDC) Measurement Results
DOE ID No.: MS-00099-RS
Address: 280 South 3rd East Street, Monticello, Utah
Instrument Type: Terradex Track EtchR Detector
Detector
Number
316103
316132
316207
Start Date End Date
11/06/86
11/06/86
11/06/86
11/06/87
11/06/87
11/06/87
Tracks Per
mm2
10.6
12.2
14.4
Radon
Concentration
(pCi/1)
1.5
1.7
2.0
Average
Working
Level (WL)
0.008
0.009
0.010
Annual Average: 0.009
See Appendix Figure 2.1 for the measurement location.
BGS:12/22/87
MS-00099-RS:PCR-004
REV100287
9
32 10
V-5
14-21
30 —
28 —
26 —
22 —
20 -
18 —
16 —
14 —
12
V-6
I8-2I • SOUTH 3 RD
1—1—r
EAST STREET :
30
iiliig V-4
14-19
•v.v. V-3
V
18 25
(I)(2) (3)(4)(5) j (6)(7)(8)(9)
V-13
18-21
V-I4J
18-21
*'»**NTV
.r:::-*HI2f*f?»v;
©
is);';
;V-8
;I4-2I
<3>
15 18 V 21
14
0
V 22
12
HOUSE
(wdh baatment
.•••.•.v.-15
V 20
14 23
LEGEND
0 ASSESSED AREA IDENTIFIER
<s) AVERAGE DEPTH OF ASSESSED CONTAMINATION
W0: AREA 0F ASSESSED CONTAMINANTS
12 -15 POST REMEDIAL ACTION EXPOSURE-RATE RANGE
BOUNDARY OF EXCAVATION
rr\ AVERAGE EXCAVATED DEPTH FOR THE DEPOSIT
LL^J OF CONTAMINATION
3(
2c
VERIFICATION SOIL SAMPLE AREA IDENTIFIER
AND EXCAVATION EXPOSURE-RATE RANGE
V-O
14-21
®POST REMEDIAL ACTION RADON DAUGHTER It
CONCENTRATION MEASUREMENT LOCATION
UJ <$®$A§, ASSESSED CONTAMINANTS NOT FOUND AT
£ TIME OF REMEDIAL ACTION
AREA WITH CONTAMINATION LEFT IN PLACE
5' X 5' X 4"-"000ST0VZ "ALL
3 X 3 "A" T
1V-I8
i ;I4-I9
V-19
14-25
- 2C
1..;
— 1£
V-I2
14-201
RADIOLOGICAL AS-BUILT-h
FIGURE 2.1
20 IO
„:*,„^:.,1 i
• - • •
: 0 : 20 i 40
: Thff.*KM>L
e*. •• for *4 aota •{•• of at* U.S.
-X-~
1.0
14 1 o 26
INTERIOR/EXTERIOR EXTENT OF CONTAMINATION
JK
US. DEPARTMENT OF ENERGY
280 SOUTH 3RD EAST ST
MONTICELLO , UTAH
30 32
UNC Geotech
35
LDUIOI aa
3T
~3-»>A^3-G7 ^1,1
12
1C
OAK RIDGE NATIONAL LABORATORY
OPERATED BY MARTIN MARIETTA ENERGY SYSTEMS, INC.
GRAND JUNCTION OFFICE
RO. BOX 2567
GRAND JUNCTION, COLORADO 81502
May 10, 1989
Andrew Wallo III
Division of Remedial Action Projects
Office of Waste Disposal and Remedial Action
Office of Nuclear Energy
U. S. Department of Energy
MS - NE24
Washington, DC 20545
Dear Mr. Wallo:
Verification Statements for Monticello Vicinity Properties
Enclosed please find verification statements and amended property
completion reports for the following properties in Monticello, Utah. These
are the properties which were remediated prior to FY 1988, and therefore
could not be subject to on-site independent verification. Discrepancies
were noted by ORNL within the remedial action completion reports during the
December 1988 Type A technical reviews. The discrepancies have been amended
by UNC. The properties are:
Please call Mary Smuin (FTS 326-6232) of our staff if you have any
questions regarding the general work process of this project.
CAL/MWS/tlb
cc: B. Mathis, UNC
P. Henwood, UNC
G. Grandbouche, DOE/GJPO
W. Murphie, DOE/HQ-DFSD
J. Nelson, WESTON
D. Kozlowski, WESTON
MS00014-RS
MS00097-CH
MS00099-RS
MS00138-RS
MS00150-RM
380 South 3rd East Street
281 East 3rd South Street
416 South Main Street
165 North 1st West Street
217 South Second East Street
Sincerely,
Craig A. Little, Ph.D.
Pollutant Assessments Group
VERIFICATION STATEMENT FOR MS00099-RS, 280 S. 3RD EAST STREET
An independent assessment of remedial action activities at 280 S. 3rd
East Street, Monticello, Utah, has been accomplished by the ORNL Pollutant
Assessments Group (PAG). The purpose of the assessment is to verify the
data supporting the adequacy of the remedial action and to confirm the
site's compliance with DOE guidelines. The assessment included reviews of
data provided in the post-remedial action report, and remedial action plans
and activities as well as verification analysis of archived post-remedial
action soil samples.
A review of procedures and techniques suggests that the procedures used
to develop the data presented in the post-remedial action report are
adequate to characterize the final radiological condition of 280 S. 3rd East
Street, Monticello, Utah, and that based on the data in the post-remedial
action reports, the site conforms to the remedial action criteria for the
Monticello Vicinity Properties (MVP).
DOE ID NO. : MS- OOP*?*?- *=>••• -
Property Address: 2SO Soiitk TL'rd EftST S+reeT
VICINITY PROPERTY CERTIFICATION SUMMARY AND RECOMMENDATION
SUMMARY EVALUATION
U.S. Department
Chem-Nuclear Geotech, Inc. of Energy (DOE)
YES NO NOT TAKEN YES NO NOT TAKEN
Ra-226 is < 5 pCi/g
above background in top
15-cm layer of soil
averaged over 100 m2. [X]* [ ] [ ]
In-situ [X] Lab [X]**
Ra-226 is < 15 pCi/g
above background in any
15-cm layer of soil
more than 15 cm below
the surface averaged
over 100 m2.
In-situ [ ] Lab [><]
0(5 t 1 t ]
Ex] [ ) [ ) [ ] [ ]
Interior gamma is < 20 ^R/h
above background in any
occupied or habitable
structure. fx] [ ] [ ]
The radon decay-product
concentration in any
occupied or habitable
structure is < 0.02
working levels or, at
most, 0.03 working levels. fx] [ ] [ ]
Supplemental standards were
applied in accordance with
EPA standard 40 CFR 192.21. [ ] [X [ ] [ ) £X] t ]
Hot spot criteria met as
outlined by U.S. DOE
guidelines for FUSRAP and
SFMP (Rev. 03/02/87).
COMMENTS: *The excavations were backfilled with materials which were measured
at the source showing that the Ra-226 concentrations are in the range of
normal background. Other surface areas were verified on the basis of gamma
exposure rates which do not exceed 30-percent above normal background.
'**'5oma Soil Sample1-, ^cre, ^Ren -Prom i"Me S^r-ft\ce_ IS-cw> Ifl^ar
and VJ^rg. - A^al^2ed-
X] ( ] [ ]
[X] [ ] [ ]
[ ] [ ] EX) [ ] [ ] 04
DOE ID NO. : MS- QC)Qc\e] ~ R.5
CHEM-NUCLEAR GEOTECH, INC., RECOMMENDATION
Based on the Chem-Nuclear Geotech, Inc., evaluation, I recommend this property
for:
[X] Certification by the Department of Energy.
[ ] Certification by the Department of Energy with the concurrence of the
Nuclear Regulatory Commission because supplemental standards were
applied per 40 CFR 192.21.
Harry A. Perry/' X) Date
SFMP Manager
Chem-Nuclear Geotech, Inc.
DOE EVALUATION
[X] Should be certified by the Department of Energy.
[ ] Should be certified by the Department of Energy with the concurrence
of the Nuclear Regulatory Commission because supplemental standards
were applied per 40 CFR 192.21.
7/30/3/
Date
•Ik c
SFMP Cert*
Department
.cation Official
of Energy
PROPERTY COMPLETION REPORT
FOR
MONTICELLO
VICINITY PROPERTY REMEDIAL ACTION
FOR
DOE ID NO: MS-00138-RS
ADDRESS: 281 EAST THIRD SOUTH STREET
MONTICELLO, UTAH 84535
MAY 1989
Prepared for
Surplus Facilities Management Program
Division of Facilities and Site Decommissioning
Department of Energy
by
UNC Geotech
P.O. Box 14000
Grand Junction, Colorado 81502-5504
Brian Mathis
Program Manager
UNC Geotech has been granted authorization to perform remedial action under
the Surplus Facilities Management Program. Remedial action was done in
accordance with the Environmental Protection Agency Standards for Cleanup of
Lands and Buildings Contaminated with Residual Radioactive Material from
Inactive Uranium Processing Sites, 40 CFR 192.12, 192.20-23.
MS-00138-RS:PCR-02
TABLE OF CONTENTS
Section Page
1.0 SUMMARY 1
1.1 Basis for Remedial Action 1
1.2 Criteria for Remedial Action 1
1.3 Summary of Remedial Action 2
2.0 OPERATIONS SUMMARY 3
2.1 Abstract of Remedial Action Plan 3
2.2 Previously Unidentified Contamination 3
2.3 Unanticipated Items During Remedial Action ... 3
2.4 Application of Supplemental Standards 3
3.0 VERIFICATION SUMMARY 4
3.1 Radiological Survey Data 4
3.1.1 Pre-Remedial Action Survey 4
3.1.2 Post-Excavation Survey 4
3.1.3 Radon Decay-Product Concentration (RDC) Measurement ... 4
3.2 Recommendation for Certification 5
Certification Data Summary 5
4.0 APPENDIX 6
i
DOE ID No.: MS-00138-RS
1.0 SUMMARY
1.1 Basis for Remedial Action
The Monticello Vicinity Properties (MVP) project was accepted into
the Surplus Facilities Management Program (SFMP) with the primary
objective of reducing the potential hazard to the public due to
long-term exposure to low-level radioactivity associated with the
offsite mill tailings derived from the former U.S. Atomic Energy
Commission (AEC) uranium mill.
The original mill, built in 1942, was financed by the United States
Government through its agent, the Defense Plant Corporation, to
provide additional sources of vanadium needed during World War II.
Various government agencies operated the mill until 1947. The AEC
obtained the mill in 1948 and operated it through 1959 under
cost-type contracts to provide both uranium and vanadium. Mill
operations were terminated on January 1, 1960.
The mill processed approximately one million tons of ore during the,
AEC operations. Throughout the operating period, tailings from the
Monticello millsite were removed from the site and used for
construction-related activities in the vicinity.
1.2 Criteria for Remedial Action
The SFMP has adopted the "Standards for Remedial Action at Inactive
Uranium Processing Sites" (40 CFR Part 192) as guidelines for all
clean-up activities under the MVP project. These standards were
prepared by the Environmental Protection Agency (EPA) to establish
guidelines for the control of tailings piles and the clean-up of
buildings and open lands.
The subject property, DOE ID Number MS-00138-RS, located at 281 East
Third South Street, Monticello, Utah, was evaluated on the basis of
the EPA standards by the Department of Energy (DOE) which determined
that residual radioactive materials in excess of EPA standards were
present on the property. UNC Geotech/Grand Junction Projects Office
was notified of the inclusion of this property into the SFMP
program, and authorized by the DOE to perform remedial action as
required to bring the property into conformance with the EPA
standards.
1
DOE ID No.: MS-00138-RS
Summary of Remedial Action
DOE ID No. :
Legal Description:
Property Address:
Property Owner:
Property Category:
Inclusion Survey Contractor:
Inclusion Notification Date:
Remedial Action Contractor:
Radiological & Engineering
Assessment (REA):
Construction Subcontractor:
Pre-Construction Conference
Record:
Notice of Final Completion
Inspection:
Volume of Material
Removed:
Area Cleaned Up:
Property Completion Report
Submitted:
MS-00138-RS
Parcel Number M-69, Block 11,
Monticello Townsite, City of
Monticello,- County of San Juan, State
of Utah
281 East Third South Street
Monticello, Utah 84535

Residential Simple (RS)
Not applicable; historical inclusion
by the Department of Energy
June 8, 1984
UNC Geotech
May 2, 1985
Crowley Construction
East Route
Monticello, Utah
June 19, 1985
September 25, 1985
Exterior: 405 cu. yd.
Interior: 1 cu. yd.
1,149 m2
May 1989
DOE ID No.: MS-00138-RS
2.0 OPERATIONS SUMMARY
2.1 Abstract of Remedial Action Plan
The remedial action plan involved removal of exterior and interior
contamination (Appendix Figure 2.1). Once excavation was complete,
the affected areas were resurveyed for possible remaining
contamination and, upon attaining satisfactory results, were
backfilled with uncontaminated material. The property was restored
to a condition comparable to that which existed prior to remedial
action activities.
2.2 Previously Unidentified Contamination
The original radiological assessment identified 375 cu. yd. of
tailings, from 6 inches to 21 inches deep, within the property. The
remedial action process included the removal of 406 cu. yd. of
residual radioactive material, ranging from 3 inches to 12 inches
deep (Appendix Figure 2.1).
The difference between the original assessment and the actual
material removed is shown in Appendix Figure 2.1.
2.3 Unanticipated Items During Remedial Action
None.
2.4 Application of Supplemental Standards
Supplemental standards were not applicable to the tailings removal
activities performed on the property.
3
DOE ID No.: MS-00138-RS
3.0 VERIFICATION SUMMARY
3.1 Radiological Survey Data
All survey data were acquired according to approved procedures.
3.1.1 Pre-Remedial Action Survey
A radiological survey was conducted by UNC Geotech during
October 1984, as described in the final REA, dated May 1985.
Appendix Figure 2.1 shows the extent of contamination
determined during the pre-remedial assessment and identifies
the areas recommended to undergo remedial action.
3.1.2 Post-Excavation Survey
A ground-level gamma scan with a scintillometer was performed
after the removal of contamination and prior to backfilling.
Following the gamma scan, soil samples representative of the
6-inch-thick soil layer at the bottom of the excavation were
collected. The samples were blended to form composite
samples representing an average over the exterior
verification areas (Appendix Figure 2.1). One individual
soil sample was also collected at grid coordinates 192298.
Exterior Findings: Surface exposure-rate values determined
during the gamma scan ranged from 14 fiR/h to 29 (iR/h
(Appendix Figure 2.1). Residual radioactive materials were
left in place in Area V-14 to save a mature shrub (Appendix
Figure 2.1). An individual soil sample of this material was
34.4 pCi/g. The resulting radium-226 concentration, averaged
over a 100 m2 area, was 6.8 pCi/g (Appendix Table 3.2). The
results of analyses for Ra-226 in 12 composite soil samples
taken from the excavated areas ranged from 1.1 pCi/g to
6.8 pCi/g (Appendix Table 3.1).
Interior Findings: Surface exposure-rate values determined
during the gamma scan ranged from 13 fiR/h to 18 juR/h for the
ground floor, and from 16 ftR/h to 19 fiR/h for the remediated
portion of the crawl space (Appendix Figure 2.1).
3.1.3 Radon Decay-Product Concentration (RDC) Measurement
Based on measurements representing an annual average, the RDC
was determined to be below the EPA standard (Appendix
Table 3.3). Appendix Figure 2.1 shows the measurement
location which was on the ground floor (the lowest habitable
level of the structure).
4
DOE ID No.: MS-00138-RS
3.2 Recommendation For Certification
Residual radioactive materials have been removed from this property
to the extent required by the EPA standards (40 CFR, Part 192.
Subpart B, Paragraph 192.12).
Therefore, the property located at 281 East Third South Street in
Monticello, Utah, is recommended for certification as required by
the SFMP Program guidelines, and the appropriate record should be
documented.
Applicability
Habitable Structures
Exposure Rate:
Radon Decay-Product
Concentration:
Certification Data Summary
Standards
Shall not exceed 20 ,ttR/h
above background.*
Annual average shall not
exceed 0.02 WL, to the
extent practicable; and
in no case shall exceed
0.03 WL.
Survey Results
Ranges were 13 £tR/h
to 18 pR/h for the
ground floor, and
16 fiR/h to 19 jtR/h
for the remediated
portion of the
crawl space (Appendix
Figure 2.1).
Annual average
0.004 WL (Appendix
Table 3.3).
Land
Radium-226 Concentration
in Surface Soil:
Radium-226 Concentration
in Subsurface Soils:
Shall not exceed 5 pCi/g
above background** in
the 15-cm surface layer,
averaged over 100 m2.
Shall not exceed 15 pCi/g
above background** in any
15-cm-thick soil layer
more than 15 cm below the
surface, averaged over
100 m2.
< 5 pCi/g above
background.***
The soil sample
results ranged
from 1.1 pCi/g to
6.8 pCi/g (Appendix
Table 3.1). The
individual soil
sample result,
averaged over a
100 m2 area,
was 6.8 pCi/g
(Appendix Table 3.2)
•The background exposure rate is approximately 17 jtR/h.
**The background radium-226 concentration is approximately 2.0 pCi/g.
***A small portion of the samples is from the 10- to 15-cm interval.
5
DOE ID No.: MS-00138-RS
4.0 APPENDIX
Appendix Tables:
Table 3.1 Post-Excavation Sample/Measurement Results
Table 3.2 Calculation of Average Radium Concentration
Over a 100 m2 Area
Table 3.3 Radon Decay-Product Concentration (RDC)
Measurement Results
Appendix Figure:
Figure 2.1 Interior/Exterior Extent of Contamination -
RADIOLOGICAL AS-BUILT
6
Appendix Table 3.1
Post-Excavation Sample/Measurement Results
DOE ID No.: MS-00138-RS
Address: 281 East Third South Street, Monticello, Utah
The analytical uncertainties in the table are reported at the 95-percent
confidence interval. A less-than sign (<) indicates that the minimum
detection limit based on Compton background was reached.
Exposure-Rate Soil Sample Ra-226 Potassium Thorium
Area Range (/iR/h) Ticket No. (pCi/g) (pCi/g) (pCi/g)
EXTERIOR
V-l 18 - 19 MAY 754 1.5 + 1.0 17.3 + 8.9 1.1 + 1.0
V-2 16 - 21 MAY 755 3.4+1.0 21.2+10.3 0.8+1.0
V- 3 16 - 19 MAY 756 2.4 + 1.0 19.0 + 8.5 1.6 + 1.0
V- 4 16 - 18 MAY 757 1.1 +. 1.0 20.0 + 8.5 1.4 + 1.0
V-5 16-21 MAY 758 4.0+1.0 17.7+ 8.7 0.8+1.0
V-6 18-22 MAY 759 3.2+1.0 20.6+8.3 1.2+1.0
V-7 18 - 26 MAY 760 4.7+1.0 16.9+ 7.8 1.4+1.0
V- 8 18-24 MAY 762 6.8+1.0 18.8+ 8.3 1.2+1.0
V- 9 16 - 26 MAY 763 2.8 + 1.0 18.1 + 8.3 1.1 + 1.0
V-10 16-21 MAY 761 4.4+1.0 19.5+ 8.4 1.0+1.0
V-ll 17 - 24 MAY 764 6.1+1.0 19.8+ 8.4 1.4+1.0
V-12 16 - 22 MAY 766 4.5 + 1.0 15.9 + 8.1 0.8 + 1.0
V-14* 29 MAY 765 34.4+2.7 19.5+10.4 < 10.0
INTERIOR
V-13 16 - 19 Not applicable
See Appendix Figure 2.1 for the verification areas.
•Individual soil sample of contamination left in place at grid coordinates
192298.
7
Appendix Table 3.2
Calculation of Average Radium Concentration Over a 100 m2 Area
DOE ID No.: MS-00138-RS
Address: 281 East Third South Street, Monticello, Utah
Cp x Ap x 0.5 + (Cr x [538 - (Ap x 0.5)])
^avg •
Where:
°avg
CP
Ap
0.5
538 =
538
Radium concentration (pCi/g) averaged over a 100 m2
(1076-ft2) area.
Concentration of the tailings in the pocket in pCi/g.
Area of the tailings pocket in ft2.
0.5 ft, or depth interval over which EPA guideline is applied.
Concentration of the remainder of the 100 m2 (1076-ft2) area.
538 ft3 or total volume over which the EPA guideline is
applied.
NOTE: The background radium concentration for this area is approximately
6.1 pCi/g (from Area V-ll).
Area/ft2
Sample
Loc.
Grid
Coord.
Depth
Interval
(inches)
Meas./
Sample
Type
Ra-226
Lab
Analysis
(PCi/g)
Ra-226 Cone.
Averaged Over
100 m2
(pCi/g)
V-14 / 25 192298 06 - 12 SS 34.4 + 2.7 6.8
Measurement Type: SS = Soil Sample
Therefore, the radium concentration does not exceed the EPA standard of
17 pCi/g for subsurface soil layers.
8
Appendix Table 3.3
Radon Decay-Product Concentration (RDC) Measurement Results
DOE ID No.: MS-00138-RS
Address: 281 East Third South Street, Monticello, Utah
Instrument Type: Terradex Track EtchR Detector
Detector
Number Start Date End Date
Tracks Per
mm2
Radon
Concentration
(pCi/1)
Average
Working
Level
311251
311288
311323
01/29/86
01/29/86
01/29/86
02/18/87
02/18/87
02/18/87
5.7
5.6
5.7
0.7
0.7
0.7
0.004
0.004
0.004
Annual Average: 0.004
See Appendix Figure 2.1 for the measurement location.
PR:ll/02/87
MS-00138-RS.-PCR-2
REVI00287
9
18 10 14-30 34 12 16 20 26 28 r 4 32
4 V-ll •V-9 V-IO 29izR/r-U6-21 17-24 II6-26
30
®
=T7
'.-rrf'.->W*-.-v*!'*r?r: 12-15
•>* •••••• .•
28 V-8
8-24
12 V 12 83 16 22
26 4 19 V-2
15-19 3 5 R> 12 V-l 17 16 -Mi
V a: 18-19 8-
(RDC) 16 19
24
13 18
ONE S-TORY
oosE/mr •. v • • • • r-.\
21
(RDC)
4* CRAWL PAC »T<-
J5
:*X;:::>: L-v.;.-: : 5W^>^S^-:
^aDAI5)ll2l:::::;:^S:^
51 SBJ?S
S3 >>'jKVr*t-
•••••••"••"••a"
20 ? i = •• -i ^t-
12 2 22%
5»
18
rm rm
V-6i
18-22
V-3i
I6-I9!
V-4i V-5i
l6-2!i
V-7 V-2
18-26 I6-I8! 6-21
16
14 31
•JSLUU.
^2
Ha 0»TI
•hi^lUWI-«i.-aHJM.
This drawing, prepared for tha Surplus Facilitiaa
Management Program, is for tha sola use.of tha U.S. •
Department of Energy and its contractors. It is not a land
survey plat or an improvement survey plat and is not to.be
'relied upaq for the establishment of fence, building, a?'"'
othifr fuiurecimprovqment lines. . .: .. i
•msMlTlC 12 n
MIII UII rsar m
20 40 20 10
"
^EET
X MTI
10 5o 23 34 9« 20 24 22 16 14 18 10 12
40 42 —i—r • •
ah • . -a*>
LEGEND
i—i—r
- T Y-
if* ? :
. .-^r
TO
ASSESSED AREA IDENTIFIER
AVERAGE DEPTH OF ASSESSED CONTAMINATION
AREA OF ASSESSED CONTAMINANTS
POST REMEDIAL ACTION EXPOSURE-RATE RANGE
BOUNDARY OF EXCAVATION
AVERAGE EXCAVATED DEPTH FOR THE DEPOSIT
OF CONTAMINATION
VERIFICATION SOIL SAMPLE AREA IDENTIFIER
AND EXCAVATION EXPOSURE-RATE RANGE
POST REMEDIAL ACTION RADON DAUGHTER
CONCENTRATION MEASUREMENT LOCATION
ASSESSED CONTAMINANTS NOT FOUND AT
TIME OF REMEDIAL ACTION
AREA WITH CONTAMINATION LEFT IN PLACE
ALL DEPTHS IN INCHES
ALL EXPOSURE-RATES IN /iR/h
SI
- 3C
- 28
-. t
WJ1
- i .v: IT r
teafaaaa ••••••••*••••*••) •••••*••*#••••••**•* •••«>««>ai**f««>*«a>4
|e»»eee»>s«e>>s>«ess|eeaae**>siM»>a»^*a|>«i^
aS
•••MA
RADIOLOGICAL AS-BUILT
FIGURE 2.1
m
Mn A.C.
U-S. OCPAJITMENT OFJENCUCY
261 EAST 3rd SOUTH STREET
MONTICELLO, UTAH y
26
24
22
20
18
16
14
12
UNC Geotech laP?*!!5v'MS-00l 38 - RS
p**-"fc3-B425-G8 SKT. 1 or 1
A*)
1C
OAK RIDGE NATIONAL LABORATORY
OPERATED BY MARTIN MARIETTA ENERGY SYSTEMS. INC
GRAND JUNCTION OFFICE
RO. BOX 2567
GRANO JUNCTION, COLORADO 81502
February 27, 1989
Andrew Wallo III
Division of Remedial Action Projects
Office of Waste Disposal and Remedial Action
Office of Nuclear Energy
U. S. Department of Energy
MS - NE24
Washington, DC 20545
Dear Mr. Wallo:
Monticello Vicinity Properties Pending Verification
As the Independent Verification Contractor (IVC) for the Monticello
Vicinity Properties (MVP) under the Surplus Facilities Management Program
(SFMP), Oak Ridge National Laboratory (ORNL) has performed an independent
assessment of remedial action activities on the following vicinity
properties by the UNC Geotech/Grand Junction Projects Office.
Based on our evaluation of UNC Geotech's Property Completion Reports
and available documentation describing post-remedial action conditions of
each property, we suggest a resolution of the deficiencies described below
prior to IVC verification.
MS00014-RS
MS00041-CS
MS00042-CS
MS00043-CS
MS00073-RS
MS00075-RS
MS00086-RS
MS00091-RS
MS00097-CH
MS00099-RS
MS00103-VL
MS00133-RS
MS00134-MR
MS00138-RS
MS00141-MR
MS00150-RM
216 South 3rd East Street
281 East 3rd South Street
393 East 3rd South Street
416 South Main Street
65 East 5th South Street
16 East 5th South Street
164 East 4th South Street
265 East 1st South Street
217 South 2nd East Street
280 South 3rd East Street
433 South 2nd East Street
217 & 233 South 3rd East Street
165 North 1st West Street
280 & 296 South Main Street
280 & 296 South Main Street
280 & 296 South Main Street
Sincerely,
Craig'A. Little, Ph.D.
Pollutant Assessments Group
CAL/MWS/ss
cc: N. Abramiuk, UNC
T. Carlson, UNC
G. Grandbouche,
W. Murphie, DOE/HQ-DFSD
J. Nelson, WESTON
D. Kozlowksi, WESTONDOE/GJPO
MS00138-RS 281 EAST 3RD SOUTH STREET
MONTICELLO, UTAH 84535
Figure 2.1 of the RAC's Property Completion Report shows Area G being
incorrectly sampled as a composite of V-10. An explanation of why Area G
was not sampled or excavated is needed. In addition, there are
discrepancies in the areas of excavation when compared with the post-
radiologic field survey map.
Analysis of the RAC split samples by the IVC found the 226Ra
concentrations to be in close agreement:
UNC TICKET #
MAY 754
MAY 755
MAY 756
MAY 757
MAY 758
MAY 759
MAY 760
MAY 762
MAY 763
MAY 761
MAY 764
MAY 766
MAY 765
MAY 769
UNC (RAC)
226Ra CONCENTRATION
1.5 pCi/g
ORNL (IVC)
226Ra CONCENTRATION
1.4 pCi/g
3.4
2.4
1.1
4.0
3.2
4.7
6.8
2.8
4.4
6.1
4.5
34.0
9.7
2.9
2.2
1.1
3.8
3.6
4.6
6.5
2.9
3.6
5.8
4.3
36.0
8.8
Based on these findings, it is recommended that a verification decision
be withheld until the discrepancies are resolved.
OAK RIDGE NATIONAL LABORATORY
OPERATED BY MARTIN MARIETTA ENERGY SYSTEMS. INC.
GRAND JUNCTION OFFICE
RO. BOX 2567
GRAND JUNCTION, COLORADO 81502
May 10, 1989
Andrew Wallo III
Division of Remedial Action Projects
Office of Waste Disposal and Remedial Action
Office of Nuclear Energy
U. S. Department of Energy
MS - NE24
Washington, DC 20545
Dear Mr. Wallo:
Verification Statements for Monticello Vicinity Properties
Enclosed please find verification statements and amended property
completion reports for the following properties in Monticello, Utah. These
are the properties which were remediated prior to FY 1988, and therefore
could not be subject to on-site independent verification. Discrepancies
were noted by ORNL within the remedial action completion reports during the
December 1988 Type A technical reviews. The discrepancies have been amended
by UNC. The properties are:
Please call Mary Smuin (FTS 326-6232) of our staff if you have any
questions regarding the general work process of this project.
CAL/MWS/tlb
cc: B. Mathis, UNC
P. Henwood, UNC
G. Grandbouche, DOE/GJPO
W. Murphie, DOE/HQ-DFSD
J. Nelson, WESTON
D. Kozlowski, WESTON
MS00014-RS
MS00097-CH
MS00099-RS
MS00138-RS
MS00150-RM
380 South 3rd East Street
281 East 3rd South Street
416 South Main Street
165 North 1st West Street
217 South Second East Street
Sincerely,
Craig A. Little, Ph.D.
Pollutant Assessments Group
VERIFICATION STATEMENT FOR MS00138-RS, 281 EAST 3RD SOUTH STREET
An independent assessment of remedial action activities at 281 East 3rd
South Street, Monticello, Utah, has been accomplished by the ORNL Pollutant
Assessments Group (PAG). The purpose of the assessment is to verify the
data supporting the adequacy of the remedial action and to confirm the
site's compliance with DOE guidelines. The assessment included reviews of
data provided in the post-remedial action report, and remedial action plans
and activities as well as verification analysis of archived post-remedial
action soil samples.
A review of procedures and techniques suggests that the procedures used
to develop the data presented in the post-remedial action report are
adequate to characterize the final radiological condition of 281 East 3rd
South Street, Monticello, Utah, and that based on the data in the post-
remedial action reports, the site conforms to the remedial action criteria
for the Monticello Vicinity Properties (MVP).
DOE ID NO. : MS- OO I 5 % "
Property Address: 28 I Ea&"f" Tlt.'rj Soufy Street"
VICINITY PROPERTY CERTIFICATION SUMMARY AND RECOMMENDATION
SUMMARY EVALUATION
U.S. Department
Chem-Nuclear Geotech, Inc. of Energy (DOE)
YES NO NOT TAKEN YES NO NOT TAKEN
Ra-226 is < 5 pCi/g
above background in top
15-cm layer of soil
averaged over 100 mJ.
In-situ [X] Lab [ ]
Ra-226 is < 15 pCi/g
above background in any
15-cm layer of soil
more than 15 cm below
the surface averaged
over 100 m2.
In-situ [ ] Lab ><3
Interior gamma is < 20 pR/h
above background in any
occupied or habitable
structure.
The radon decay-product
concentration in any
occupied or habitable
structure is < 0.02
working levels or, at
most, 0.03 working levels.
Supplemental standards were
applied in accordance with
EPA standard 40 CFR 192.21.
Hot spot criteria met as
outlined by U.S. DOE
guidelines for FUSRAP and
SFMP (Rev. 03/02/87).
COMMENTS: *The excavations were backfilled with materials which were measured
at the source showing that the Ra-226 concentrations are in the range of
normal background. Other surface areas were verified on the basis of gamma
[X]* ( ] [ ] [VI ( ] [ ]
txi C 1 ( ] [ ] ( 1
txj ( ] [ ] li/f [ 1 [ )
K) [ ] t 1 [\A [ ] t 1
[ ] Cx] [ ] [ ] m [ ]
[ ] [ ] LxJ
exposure rates which do not exceed 30-percent above normal background
DOE ID NO.: MS- OO > 3>S ~ £ S
CHEM-NUCLEAR GEOTECH, INC., RECOMMENDATION
Based on the Chem-Nuclear Geotech, Inc., evaluation, I recommend this property
for:
[X] Certification by the Department of Energy.
[ ] Certification by the Department of Energy with the concurrence of the
Nuclear Regulatory Commission because supplemental standards were
applied per 40 CFR 192.21.
"7?
Harry A. Perryy^ ZP Date
SFMP Manager,
Chem-Nuclear Geotech, Inc.
DOE EVALUATION
^] Should be certified by the Department of Energy.
[ ] Should be certified by the Department of Energy with the concurrence
of the Nuclear Regulatory Commission because supplemental standards
were applied per 40 CFR 192.21.
SFMP Certification Official Date
Department of Energy
DEC 2 7 1996 t/
PROPERTY COMPLETION REPORT
FOR
MONTICELLO
VICINITY PROPERTY REMEDIAL ACTION
FOR
DOE ID NO.: MS-00071-RS
ADDRESS: 464 SOUTH 1ST EAST STREET
MONTICELLO. UTAH 84535
SEPTEMBER 1989
Prepared for
Surplus Facilities Management Program
Division of Facilities and Site Decommissioning
Department of Energy
by
UNC Geotech
P.O. Box 14000
Grand Junction, Colorado 81502-5504
Brian Mathis
Program Manager
UNC Geotech has been granted authorization to perform remedial action under
the Surplus Facilities Management Program. Remedial action was done in
accordance with the Environmental Protection Agency (EPA) Standards for
Cleanup of Lands and Buildings Contaminated with Residual Radioactive Material
from Inactive Uranium Processing Sites, 40 CFR 192.12, 192.20-23.
MS-00071-RS:PCR-MS-05
TABLE OF CONTENTS
Section Page
1.0 SUMMARY 1
1.1 Basis for Remedial Action 1
1.2 Criteria for Remedial Action 1
1.3 Summary of Remedial Action 2
2.0 OPERATIONS SUMMARY. 3
2.1 Abstract of Remedial Action Plan 3
2.2 Previously Unidentified Contamination 3
2.3 Unanticipated Items During Remedial Action 3
2.4 Application of Supplemental Standards 3
3.0 VERIFICATION SUMMARY 4
3.1 Radiological Survey Data 4
3.1.1 Pre-Remedial Action Survey 4
3.1.2 Post-Excavation Survey 4
3.1.3 Radon Decay-Product Concentration (RDC) Measurement ... 4
3.2 Recommendation for Certification 5
Certification Data Summary 5
4.0 APPENDIX 6
i
DOE ID NO.: MS-00071-RS
1.0 SUMMARY
1.1 Basis for Remedial Action
The Monticello Vicinity Properties (MVP) project was accepted into
the Surplus Facilities Management Program (SFMP) with the primary
objective of reducing the potential hazard to the public due to
long-term exposure to low-level radioactivity associated with the
offsite mill tailings derived from the former U.S. Atomic Energy
Commission (AEC) uranium mill.
The original mill, built in 1942, was financed by the United States
Government through its agent, the Defense Plant Corporation, to
provide additional sources of vanadium needed during World War II.
Various government agencies operated the mill until 1947. The AEC
obtained the mill in 1948 and operated it through 1959 under
cost-type contracts to provide both uranium and vanadium. Mill
operations were terminated on January 1, 1960.
The mill processed approximately one million tons of ore during the
AEC operations. Throughout the operating period, tailings from the
Monticello millsite were removed from the site and used for
construction-related activities in the vicinity.
1.2 Criteria for Remedial Action
The SFMP has adopted the "Standards for Remedial Action at Inactive
Uranium Processing Sites" (40 CFR Part 192) as guidelines for all
cleanup activities under the MVP project. These standards were
prepared by the Environmental Protection Agency (EPA) to establish
guidelines for the control of tailings piles and the cleanup of
buildings and open lands.
The subject property was evaluated on the basis of the EPA standards
by the the Department of Energy (DOE), which determined that
residual radioactive materials in excess of the EPA standards were
present on the property. UNC Geotech/Grand Junction Projects Office
was notified of the inclusion of this property into the SFMP program
and authorized by the DOE to perform remedial action as required to
bring the property into conformance with the EPA standards.
1
DOE ID NO.: MS-00071-RS
.3 Summary of Remedial Action
DOE ID No.:
Legal Description:
Property Address:
Property Owners:
Property Category:
Inclusion Survey Contractor:
Inclusion Notification Date:
Remedial Action Contractor:
Radiological & Engineering
Assessment (REA):
Construction Subcontractor:
Pre-Construction Conference
Record:
Notice of Final Completion
Inspection:
Volume of Material
Removed:
Area Cleaned Up:
Property Completion Report
Submitted:
MS-00071-RS
Parcel No. M-9, Block 3, City of
Monticello, County of San Juan,
State of Utah
464 South 1st East Street
Monticello. Utah 84535

Residential Simple (RS)
Not applicable; historical inclusion by
the Department of Energy
June 8, 1984
UNC Geotech
July 2, 1986
Sonderegger Construction
P.O. Box 6
Monticello, Utah
October 8, 1987
November 25, 1987
Exterior: 1,190 cu. yd.
Interior: 0 cu. yd.
3,144 m2
September 1989
DOE ID NO.: MS-00071-RS
2.0 OPERATIONS SUMMARY
2.1 Abstract of Remedial Action Plan
The remedial action plan involved removal of exterior contamination
(Appendix Figures 2.1a and 2.1b). Once excavation was complete, the
affected areas were resurveyed for possible remaining contamination .
and. upon attaining satisfactory results, were backfilled with
uncontaminated material. The property was restored to a condition
comparable to that which existed prior to remedial action
activities.
2.2 Previously Unidentified Contamination
The original radiological assessment identified 909 cu. yd. of
tailings, from 6 inches to 45 inches deep, within the property. The
remedial action process included the removal of 1,190 cu. yd. of
residual radioactive material, ranging from 9 inches to 48 inches
deep (Appendix Figures 2.1a and 2.1b).
The difference between the original assessment and the actual
material removed is shown in Appendix Figures 2.1a and 2.1b.
2.3 Unanticipated Items During Remedial Action
None.
2.4 Application of Supplemental Standards
Supplemental standards were not applicable to the tailings removal
activities performed on the property.
3
DOE ID NO.: MS-00071-RS
3.0 VERIFICATION SUMMARY
3.1 Radiological Survey Data
All survey data were acquired according to approved procedures.
3.1.1 Pre-Remedial Action Survey
A radiological survey was conducted by UNC Geotech during
October 1985, as described in the final REA, dated July 1986.
Appendix Figures 2.1a and 2.1b show the extent of
contamination determined during the pre-remedial assessment
and identify the areas recommended to undergo remedial
action.
3.1.2 Post-Excavation Survey
A ground-level gamma scan with a scintillometer was performed
after the removal of contamination and prior to backfilling.
Following the gamma scan, soil samples representative of the
6-inch-thick soil layer at the bottom of the excavation were
collected. The samples were blended to form composite
samples representing an average over the verification areas
(Appendix Figures 2.1a and 2.1b).
Exterior Findings: Surface exposure-rate values determined
during the gamma scan ranged from 12 fiR/h to 29 fiR/h
(Appendix Figures 2.1a and 2.1b). The results of analyses
for Ra-226 in 38 composite soil samples taken from the
excavated areas ranged from 1.1 pCi/g to 7.5 pCi/g (Appendix
Table 3.1).
3.1.3 Radon Decay-Product Concentration (RDC) Measurement
Based on measurements representing an annual average,
the RDC was determined to be below the EPA standard
(Appendix Table 3.2). Appendix Figure 2.1a shows the
measurement location in the basement (the lowest habitable
level of the structure).
4
DOE ID NO.: MS-00071-RS
3.2 Recommendation For Certification
Residuai radioactive materials have been removed from this property
to the extent required by the EPA standards (40 CFR 192.12,
192.20-23). (See Certification Data Summary below.)
Therefore, the property located at 464 South 1st East Street, in
Monticello, Utah, is recommended for certification as required by
the SFMP Project guidelines, and the appropriate record should be
documented.
Applicability
Habitable Structures
Exposure Rate:
Radon Decay-Product
Concentration:
Certification Data Summary
Standards
Shall not exceed 20 fiR/h
above background.*
Annual average shall not
exceed 0.02 WL, to the
extent practicable, and
in no case shall exceed
0.03 WL.
Survey Results
Range for the basement
was 14 fiR/h to 16 /iR/h
and the range for the
ground floor was 12 fiR/h
to 18 fiR/h (Appendix
Figure 2.1a).
Annual average 0.0155 WL
(Appendix Table 3.2).
Land
Radium-226 Concentration
in Surface Soil:
Radium-226 Concentration
in Subsurface Soils:
Shall not exceed 5 pCi/g
above background** in
the 15-cm surface layer,
averaged over 100 m2.
Shall not exceed 15 pCi/g
above background** in any
15-cm-thick soil layer
more than 15 cm below the
surface, averaged over
100 m2.
< 5 pCi/g above
background.
The composite soil
sample results ranged
from 1.1 pCi/g to
7.5 pCi/g (Appendix
Table 3.1).
*The background exposure rate is approximately 17 ftR/h.
**The background radium-226 concentration is approximately 2.0 pCi/g.
5
DOE ID NO.: MS-00071-RS
4.0 APPENDIX
Appendix Tables:
Table 3.1 Post-Excavation Sample/Measurement Results
Table 3.2 Radon Decay-Product Concentration (RDC) Measurement
Results
Appendix Figures:
Figure 2.1a Exterior Extent of Contamination - RADIOLOGICAL
AS-BUILT
Figure 2.1b Exterior Extent of Contamination - RADIOLOGICAL
AS-BUILT
6
Appendix Table 3.1
Post-Excavation Sample/Measurement Results
DOE ID No.: MS-00071-RS
Address: 464 South 1st East Street, Monticello. Utah
The analytical uncertainties in the table are reported at the 95-percent
confidence interval. A less-than sign (<) indicates that the minimum
detection limit based on Compton background was reached.
Area
Exposure-Rate
Range (uR/h)
Soil Sample
Ticket No.
Ra-226
(PCi/g)
Potassium
(PCi/g)
Thorium
(PCi/g)
V-l
V-2
V-3
V-4
V-5
V-6
V-7
V-8
V-9
V-10
V-ll
V-12
V-13
V-14
V-15
V-16
V-17
V-18
V-19
V-20
15
15
15
15
15
15
15
15
15
15
15
14
14
14
14
14
14
14
14
18
17
18
20
19
18
21
19
21
21
21
20
19
21
17
16
16
17
16
18
25
MNH 326
MNH 327
MNH 328
MNH 329
MNH 330
MNH 331
MNH 332
MNH 333
MNH 334
MNH 335
MNH 336
MNH 337
MNH 338
MNH 339
MNH 340
MNH 341
MNH 342
MNH 343
MNH 344
MNH 345
2.1
1.3
1.1
3.6
3.1
4.7
2.0
2.2
5.8
6.8
6.4
4.2
4.3
7.4
0.3
0.3
0.2
0.5
0.5
0.7
0.3
0.5
0.9
0.5
0.3
0.4
0.3
0.4
0.9
1.0
1.0
0.7
0.7
1.1
21.1
19.2
19.4
18.4
19.5
19.4
18.9
19.1
19.8
20.2
18.9
19.2
19.3
20.0
21.1
21.1
20.3
18.3
17.5
19.5
3.8
3.6
3.5
3.5
3.7
3.7
3.6
3.6
3.7
3.8
3.6
3.6
3.7
.7
.5
.5
.4
1.2
0.9
0.9
1.1
1.
0.
1.
0.
0.
1.
1.3
0.9
0.9
1.3
0.8
4.1
4.0
3.7
0.3
0.3
0.2
0.3
0.3
0.3
0.3
0.3
0.2
0.3
0.3
0.2
0.2
0.3
0.3
0.3
0.3
< 0.2
7
Appendix Table 3.1 (continued)
Post-Excavation Sample/Measurement Results
DOE ID No.: MS-00071-RS
Address: 464 South 1st East Street, Monticello, Utah
Exposure-Rate Soil Sample Ra-226 Potassium Thorium
Area Range (/zR/h) Ticket No. (pCi/g) (pCi/g) (pCi/g)
V-21 18 - 25 MNH 346 5.3 + 0.8 17.6 + 3.4 0.8 + 0.2
V-22 18 - 23 MNH 347 7.5+1.1 19.0+3.7 0.9+0.3
V-23 19 - 25 MNH 348 7.2+1.0 20.8+3.8 1.3+0.3
V-24 19 - 27 MNH 349 6.9+1.0 19.0+3.6 0.8+0.2
V-25 19 - 25 MNH 350 3.6+0.5 16.5+3.3 1.4+0.3
V-26 18 - 29 MNI 701 7.0 + 1.0 18.7 +.3.5 1.1 + 0.3
V-27 18 - 29 MNI 702 5.5 + 0.8 18.5 + 3.5 1.1 + 0.3
V-28 17 - 23 MNI 703 2.9 + 0.5 18.1 + 3.5 0.9 + 0.3
V-29 17-22 MNI 704 4.6+0.7 18.6+3.5 0.9+0.3
V-30 16-21 MNI 705 3.0+0.5 17.2+3.5 0.8+0.2
V-31 16 - 20 MNI 706 3.2+0.5 18.4+3.5 0.9+0.2
V-32 16 - 19 MNI 707 3.5+0.5 19.6+3.7 1.0+0.3
V-33 16 - 19 MNI 708 3.8+0.6 19.5+3.7 1.1+0.3
V-34 16 - 18 MNI 709 2.2+0.4 18.8+3.5 0.7+0.2
V-35 18 - 21 MNI 710 3.7 + 0.6 19.4 + 3.8 1.5 + 0.3
V-36 17-19 MNI 711 3.6+0.6 21.3+4.6 0.6+0.3
V-37 17 - 19 MNI 712 3.2 + 0.5 18.8 + 4.3 0.4 + 0.2
V-38 16 - 20 MNI 713 3.4 + 0.6 19.8 + 4.4 < 0.2
See Appendix Figures 2.1a and 2.1b for the verification areas.
8
Appendix Table 3.2
Radon Decay-Product Concentration (RDC) Measurement Results
DOE ID No.: MS-00071-RS
Address: 464 South 1st East Street, Monticello, Utah
Instrument Type: Terradex Track EtchR Detector
Radon Average
Detector Tracks Per Concentration Working
Number Start Date End Date mm2 (pCi/1) Level (WL)
638978
637146
638982
12-21-87
12-21-87
12-21-87
01-18-89
01-18-89
01-18-89
29.2
29.5
30.6
3.04
3.07
3.18
0.0152
0.0154
0.0159
Annual Average: 0.0155
See Appendix Figure 2.1a for the measurement location.
BGS:05/22/89
MS-00071-RS:PCR-170
REV 04/11/89
9
,0 -
>8 —
6 —
V-19
14-18
V-J8
14-16
2 ~
V-38
16-20
ie-i7
g villi
LiLtas!
* • • - • • • • * ( '•••••Xv X>:-:V.V-f v'.VS:-
V-37
17-19
mm. ij. r.'.i.f r'-'l'V. .v::-v.w.::.«:.:-; •.>•.•.•::.:
•W '•-•4 •
V-36
17-19
MATCH SHEET.
NV//:::A:i::::::x-:::v;.v,
;-;«V/-::::::::;-V:«"-Vwv:
34
• T'liYn IPI JT ' i • v
14
pn
Ml
V-32
17
17
5
14-16
14
14 16
-I6BSMT. i
..STORY.HOUSE
biaocmirit)
19
• •••-vc •••r
16 18
V-31
2C
«-:«•*-
17-2
48
16-21
I -1 1 I I I 1 I f I
RADIOLOGICAL AS-BUILT
FIGURE 2.1o
32
• • • •«• •• •• *i#• <
ALL DEPTHS IN INCHES
ALL EXPOSURE-RATES IN p R/h
ASSESSED AREA IDENTIFIER
(6) AVERAGE DEPTH OF ASSESSED CONTAMINATION
AREA OF ASSESSED CONTAMINANTS
12-15 POST REMEDIAL ACTION EXPOSURE-RATE RANGE
— BOUNDARY OF EXCAVATION
23 17
9.
1 6tBi ONE
STO
•••••
ttt
12 14 V
(4 14 7
••••
'Vi.'Jw'Wii
21
14
i ONE
V-20 (•with
GRD 25 18 12-ilS ELR
V-23
25 19
DO*
V-22
19-27 27
18 29
V-26
18-29 25
i'WL-^STTT 2119-251
- 126
Q
•••••••••••••• - 24
This)<rawing; pnap«n|d for th« Surplus focilitiei
. Mwmwmt jjwanwii te-fflfcltw ^*ftfe MM jaf 5UJR U^,
OepaftireM cff Ensngj and tejcontraciors. It Is; not a
landjsurvsy ^latorai|imfMw^m«nt sifrvey plqt and is
jtot 4> be ratifd upon for tha ajrtablishfnent of jence, • ••••••••••a]
JNORTH.
: SQALE IN FEET
20 IO : 20 :40
•••••
EXTERIOR EXTENT OF CONTAMINATION
DEMOLISHED DURING REME'DIAll ACTIONi
12
10 14
1 i 1
16 20
1
22
AVERAGE EXCAVATED DEPTH FOR THE DEPOSIT
OF CONTAMINATION
VERIFICATION SOIL SAMPLE AREA IDENTIFIER
AND EXCAVATION EXPOSURE-RATE RANGE
POST REMEDIAL ACTION RADON DECAY-PRODUCT
CONCENTRATION MEASUREMENT LOCATION
ASSESSED CONTAMINANTS NOT FOUND AT
TIME OF REMEDIAL ACTION
24 26 28 SB*""
no. o»n
t-m. or eccoMan
f5
SL Mr 6
^35
•T
U.S. DEPARTMENT OF ENERGY
mmo tamer torn »«t« of net. COLOK»OO
464 SOUTH 1ST EAST STREET
MONTICELLO, UTAH
7 34
UNC Geotech
55—~
COCftTlOM NO
TBIt
MS-00071-RS
•^S-BOOOTl-GSanT org
315 40 ^
3C
- 20
- 18
- 16
14
12
1C
34 30 36 38 f ZD
I 1 1 I 1 I 1
V-3 V-l V-5
15-18 15-17 15-20 15 21 15 21
J AM
•••!«»T*Al
15 LH. LU
10 CO
21
•A< III
V7
117-19 = x
3 V-2 • . • * J to ••I
15-18
V-l I
15-20 3
MATCH
V-4
15-19 15 15 19 21
32
- 30
28
26
24
©
<5>
ALL DEPTHS IN INCHES
ALL EXPOSURE-RATES IN p R/h
ASSESSED AREA IDENTIFIER
22
AVERAGE DEPTH OF ASSESSED CONTAMINATION
AREA OF ASSESSED CONTAMINANTS
12-15 POST REMEDIAL ACTION EXPOSURE-RATE RANGE
— BOUNDARY OF EXCAVATION
12
V-1
18-171
AVERAGE EXCAVATED DEPTH FOR THE DEPOSIT
OF CONTAMINATION
VERIFICATION SOIL SAMPLE AREA IDENTIFIER
AND EXCAVATION EXPOSURE-RATE RANGE
RADIOLOGICAL AS-BUILT
FIGURE 2.1h
20
18
ASSESSED CONTAMINANTS NOT FOUND AT
TIME OF REMEDIAL ACTION
16
• »••••*>»•• EXTERIOR EXTENT OF CONTAMINATION
•20 : K) : 20 140
10 ' ' • R*EET
This drawing, prepared for the Surplus Facilities
Management Program, is for the sole use of the U.S.
Department of Energy and its contractors. It is not a land
survey plat or an improvement survey plat and is not to be
relied upon for the establishment of fence, building, or
other future improvement lines.
1 9 j i ( L
14 1fl
J L
90
J t I L
99 9d
J I L
99
X
HO. D»tl HCvnnns
l~m or •ccanaTt
•OH m—IMl-HWI-IH»75
II.- m I II • —
•nrSxn \vm gt/f£—
?0
•T CK. A.C. AM. HO. OATC ftCVISONS SY CK. 4.C. «M.
14
U.S. DEPARTMENT OF ENERGY
WHIP JUHCTWH «»t» OWCE. coton*oo
464 SOUTH 1ST EAST STREET
MONTICELLO, UTAH
12
I BIT
Ijftirj nmtf^rh w°ws-ooo7i-RS
36 40 42
10
OAK RIDGE NATIONAL LABORATORY
OPERATED BY MARTIN MARIETTA ENERGY SYSTEMS. INC.
GRAND JUNCTION OtTICE
P. O BOX ?567
GRAND JUNCTION. COLORADO 81502
May 8, 1990
W. E. Murphie
SFMP Program Manager
Division of Facility and Site
Decommissioning Projects
Office of Nuclear Energy
U.S. Department of Energy
MS - NE-20
Washington, DC 20545
Dear Mr. Murphie:
Verification Statements for Monticello Vicinity Properties
Enclosed please find the verification statements for:
These properties were subject to Type A verification (completion report
review and confirmatory analysis). The official IVC reports are currently
in publication.
MJW/mjw
cc: B. Berven, ORNL
M. Landis, DOE/HQ-DFSD
B. Mathis, UNC
D. MacKenzie, RFW
D. Williamson, DOE/GJPO
MS00071-RS 464 South 1st East Street
MS00145-RS 600 South Cemetery Road
MS00153-VL 87 East 500 South Street
MS00168-VL 397 East 3rd South Street
Sincerely,
Pollutant Assessments Group
VERIFICATION STATEMENT FOR MS00071-RS, 464 SOUTH 1ST EAST STREET
An independent assessment of remedial action activities at 464 South
1st East Street, Monticello, Utah, has been accomplished by the ORNL
Pollutant Assessments Center (PAC). The purpose of the assessment is to
verify the data supporting the adequacy of the remedial action and to
confirm the site's compliance with DOE guidelines. The assessment included
reviews of data provided in the post-remedial action report, and remedial
action plans and activities as well as verification analysis of archived
post-remedial action soil samples.
A review of procedures and techniques suggests that the procedures used
to develop the data presented in the post-remedial action report are
adequate to characterize the final radiological condition of 464 South
1st East Street, Monticello, Utah, and that based on the data in the post-
remedial action reports, the site conforms to the remedial action criteria
for the Monticello Vicinity Properties (MVP).
DOE ID NO.: MS- OOP 1 1 ^-S
Property Address: So^tl, f irst East Streg.lT
VICINITY PROPERTY CERTIFICATION SUMMARY AND RECOMMENDATION
SUMMARY EVALUATION
Chem-Nuclear Geotech, Inc.
YES NO NOT TAKEN
U.S. Department
of Energy (DOE)
YES NO NOT TAKEN
Ra-226 is < 5 pCi/g
above background in top
15-cm layer of soil
averaged over 100 ms. [X]* [ ] [ ]
In-situ [X] Lab [ ]
Ra-226 is < 15 pCi/g
above background in any
15-cm layer of soil
more than 15 cm below
the surface averaged
over 100 m2. [>0 [ ] [ ]
In-situ [ ] Lab fx3
Interior gamma is < 20 pR/h
above background in any
occupied or habitable
structure. [px^ [ ] ( ]
The radon decay-product
concentration in any
occupied or habitable
structure is < 0.02
working levels or, at
most, 0.03 working levels. fx] [ ] [ ]
Supplemental standards were
applied in accordance with
EPA standard 40 CFR 192.21. [ ] [x] [ ]
Hot spot criteria met as
outlined by U.S. DOE
guidelines for FUSRAP and
SFMP (Rev. 03/02/87). [ ] [ ] [x}.
[X) [ ] [ )
( J
( 1
[ )
[ )
( )
( ]
[ )
[ )
COMMENTS: *The excavations were backfilled with materials which were measured
at the source showing that the Ra-226 concentrations are in the range of
normal background. Other surface areas were verified on the basis of gamma
exposure, rates which do not exceed 30-percent above normal background.
DOE ID NO. : MS- OOOl I - R S
CHEM-NUCLEAR GEOTECH, INC., RECOMMENDATION
Based on the Chem-Nuclear Geotech, Inc., evaluation, I recommend this property
for:
[X] Certification by the Department of Energy.
[ ] Certification by the Department of Energy with the concurrence of the
Nuclear Regulatory Commission because supplemental standards were
applied per 40 CFR 192.21.
Harry A. Party ~g)
SFMP Manager
Chem-Nuclear Geotech, Inc.
DOE EVALUATION
0^) Should be certified by the Department of Energy.
[ ] Should be certified by the Department of Energy with the concurrence
of the Nuclear Regulatory Commission because supplemental standards
were applied per 40 CFR 192.21.
SFMP Certification Official Date
Department of Energy
Date
PROPERTY COMPLETION REPORT
FOR
MONTICELLO
VICINITY PROPERTY REMEDIAL ACTION
FOR
DOE ID NO.: MS-00145-RS
ADDRESS: 600 SOUTH CEMETERY ROAD
MONTICELLO. UTAH 84535
SEPTEMBER 1989
Prepared for
Surplus Facilities Management Program
Division of Facilities and Site Decommissioning
Department of Energy
by
UNC Geotech
P.O. Box 14000
Grand Junction, Colorado 81502-5504
Brian Mathis
Program Manager
UNC Geotech has been granted authorization to perform remedial action under
the Surplus Facilities Management Program. Remedial action was done in
accordance with the Environmental Protection Agency (EPA) Standards for
Cleanup of Lands and Buildings Contaminated with Residual Radioactive Material
from Inactive Uranium Processing Sites, 40 CFR 192.12, 192.20-23.
MS-00145-RS:MS-05
TABLE OF CONTENTS
Section Page
1.0 SUMMARY 1
1.1 Basis for Remedial Action 1
1.2 Criteria for Remedial Action 1
1.3 Summary of Remedial Action 2
2.0 OPERATIONS SUMMARY 3
2.1 Abstract of Remedial Action Plan 3
2.2 Previously Unidentified Contamination 3
2.3 Unanticipated Items During Remedial Action 3
2.4 Application of Supplemental Standards .... 3
3.0 VERIFICATION SUMMARY 4
3.1 Radiological Survey Data 4
3.1.1 Pre-Remedial Action Survey 4
3.1.2 Post-Excavation Survey 4
3.1.3 Radon Decay-Product Concentration (RDC) Measurement ... 4
3.2 Recommendation for Certification 5
Certification Data Summary 5
4.0 APPENDIX 6
i
DOE ID NO.: MS-00145-RS
1.0 SUMMARY
1.1 Basis for Remedial Action
The Monticello Vicinity Properties (MVP) project was accepted into
the Surplus Facilities Management Program (SFMP) with the primary
objective of reducing the potential hazard to the public due to
long-term exposure to low-level radioactivity associated with the
offsite mill tailings derived from the former U.S. Atomic Energy
Commission (AEC) uranium mill.
The original mill, built in 1942, was financed by the United States
Government through its agent, the Defense Plant Corporation, to
provide additional sources of vanadium needed during World War II.
Various government agencies operated the mill until 1947. The AEC
obtained the mill in 1948 and operated it through 1959 under
cost-type contracts to provide both uranium and vanadium. Mill
operations were terminated on January 1, 1960.
The mill processed approximately one million tons of ore during the
AEC operations. Throughout the operating period, tailings from the
Monticello millsite were removed from the site and used for
construction-related activities in the vicinity.
1.2 Criteria for Remedial Action
The SFMP has adopted the "Standards for Remedial Action at Inactive
Uranium Processing Sites" (40 CFR Part 192) as guidelines for all
cleanup activities under the MVP project. These standards were
prepared by the Environmental Protection Agency (EPA) to establish
guidelines for the control of tailings piles and the cleanup of
buildings and open lands.
The subject property was evaluated on the basis of the EPA standards
by the Department of Energy (DOE), which determined that residual
radioactive materials in excess of the EPA standards were present on
the property. UNC Geotech/Grand Junction Projects Office was
notified of the inclusion of this property into the SFMP program and
authorized by the DOE to perform remedial action as required to
bring the property into conformance with the EPA standards.
1
DOE ID NO.: MS-00145-RS
1.3 Summary of Remedial Action
DOE ID No.:
Legal Description:
Property Address:
Property Owners:
Property Category:
Inclusion Survey Contractor:
Inclusion Notification Date:
Remedial Action Contractor:
Radiological & Engineering
Assessment (REA):
Construction Subcontractor:
Pre-Construction Conference
Record:
Notice of Final Completion
Inspection:
Volume of Material
Removed:
Area Cleaned Up:
Property Completion Report
Submitted:
MS-00145-RS /f% > . > ,c O
Parcel No. M-599-* Supplemental Plat,
NW4 Section 31, T33S., R24E., Salt Lake
Meridian, City of Monticello, County of San
Juan, State of Utah
600 South Cemetery Road u
Monticello, Utah 84535

Not applicable; historical inclusion
by the Department of Energy
June 8, 1984
UNC Geotech
May 15. 1986
Sonderegger Construction
P.O. Box 6
Monticello, Utah
June 8, 1987
August 5, 1987
Exterior: 511 cu. yd.
Interior: 0 cu. yd.
1,638 m2
September 1989
2
DOE ID NO.: MS-00145-RS
2.0 OPERATIONS SUMMARY
2.1 Abstract of Remedial Action Plan
The remedial action plan involved removal of exterior contamination
(Appendix Figure 2.1). Once excavation was complete, the affected
areas were resurveyed for possible remaining contamination and, upon
attaining satisfactory results, were backfilled with uncontaminated
material. The property was restored to a condition comparable to
that which existed prior to remedial action activities.
2.2 Previously Unidentified Contamination
The original radiological assessment identified 325 cu. yd. of
tailings, 6 inches deep, within the property. The remedial action
process included the removal of 511 cu. yd. of residual radioactive
material, ranging from 6 inches to 9 inches deep (Appendix Figure 2.1).
The difference between the original assessment and the actual
material removed is shown in Appendix Figure 2.1.
2.3 Unanticipated Items During Remedial Action
None.
2.4 Application of Supplemental Standards
Supplemental standards were not applicable to the tailings removal
activities performed on the property.
3
DOE ID NO.: MS-00145-RS
3.0 VERIFICATION SUMMARY
3.1 Radiological Survey Data
All survey data were acquired according to approved procedures.
3.1.1 Pre-Remedial Action Survey
A radiological survey was conducted by UNC Geotech during
January 1986. as described in the final REA, dated May 1986.
Appendix Figure 2.1 shows the extent of contamination
determined during the pre-remedial assessment and identifies
the areas recommended to undergo remedial action.
3.1.2 Post-Excavation Survey
A ground-level gamma scan with a scintillometer was performed
after the removal of contamination and prior to backfilling.
Following the gamma scan, soil samples representative of the
6-inch-thick soil layer at the bottom of the excavation were
collected. The samples were blended to form composite
samples representing an average over the verification areas
(Appendix Figure 2.1).
Exterior Findings: Surface exposure-rate values determined
during the gamma scan ranged from 13 [iR/h to 29 fiR/h
(Appendix Figure 2.1). The results of analyses for Ra-226 in
18 composite soil samples taken from the excavated areas
ranged from 1.5 pCi/g to 8.7 pCi/g (Appendix Table 3.1).
3.1.3 Radon Decay-Product Concentration (RDC) Measurement
Based on measurements representing an annual average,
the RDC was determined to be below the EPA standard
(Appendix Table 3.2). Appendix Figure 2.1 shows the
measurement location on the ground floor (the lowest
habitable level of the structure).
4
DOE ID NO.: MS-00145-RS
3.2 Recommendation For Certification
Residual radioactive materials have been removed from this property
to the extent required by the EPA standards (40 CFR 192.12,
192.20-23). (See Certification Data Summary below.)
Therefore, the property located at 600 South Cemetery Road, in
Monticello, Utah, is recommended for certification as required by
the SFMP Project guidelines, and the appropriate record should be
documented.
Applicability
Habitable Structures
Exposure Rate:
Certification Data Summary
Standards
Radon Decay-Product
Concentration:
Land
Radium-226 Concentration
in Surface Soil:
Radium-226 Concentration
in Subsurface Soils:
Shall not exceed 20 uR/h
above background.*
Annual average shall not
exceed 0.02 WL, to the
extent practicable, and
in no case shall exceed
0.03 WL.
Shall not exceed 5 pCi/g
above background** in
the 15-cm surface layer,
averaged over 100 m2.
Shall not exceed 15 pCi/g
above background** in any
15-cm-thick soil layer
more than 15 cm below the
surface, averaged over
100 m2.
Survey Results
Range for the ground
floor was 12 {iR/h to
15 fiR/h (Appendix
Figure 2.1).
Annual average 0.0058 WL
(Appendix Table 3.2).
< 5 pCi/g above
background.
The soil sample
results ranged from
1.5 pCi/g to 8.7 pCi/g
(Appendix Table 3.1).
*The background exposure rate is approximately 18 [iR/h.
**The background radium-226 concentration is approximately 2.0 pCi/g.
5
DOE ID NO.: MS-00145-RS
4.0 APPENDIX
Appendix Tables:
Table 3.1 Post-Excavation Sample/Measurement Results
Table 3.2 Radon Decay-Product Concentration (RDC)
Measurement Results
Appendix Figure:
Figure 2.1 Exterior Extent of Contamination - RADIOLOGICAL
AS-BUILT
6
Appendix Table 3.1
Post-Excavation Sample/Measurement Results
DOE ID No.: MS-00145-RS
Address: 600 South Cemetery Road, Monticello, Utah
The analytical uncertainties in the table are reported at the 95-percent
confidence interval.
Area
Exposure-Rate
Range (fiR/h)
Soil Sample
Ticket No.
Ra-226
(pCi/g)
Potassium
(PCi/g)
Thorium
(PCi/g)
V-l
V-2
V-3
V-4
V-5
V-6
V-7
V-8
V-9
V-10
V-ll
V-12
V-13
V-14
V-15
V-16
V-17
V-18
16
17
17
17
17
17
17
18
18
18
18
18
18
18
18
18
19
19
19
19
19
18
21
20
24
21
20
22
19
22
21
21
21
23
22
29
MNF 651
MNF 652
MNF 653
MNF 654
MNF 655
MNF 656
MNF 657
MNF 658
MNF 660
MNF 661
MNF 662
MNF 665
MNF 666
MNF 667
MNF 668
MNF 669
MNF 670
MNF 671
2.5
2.4
2.8
2.9
2.4
2.5
5.6
5.3
4.1
8.7
3.2
2.2
3.5
2.6
1.5
2.3
3.6
3.0
0.5
0.5
0.6
0.6
0.5
0.5
0.8
0.8
0.6
1.2
0.5
0.4
0.6
0.5
0.3
0.4
0.6
0.5
14.3
16.6
16.9
15.8
12.9
16.3
11.4
11.6
12.0
13.8
13.4
13.6
13.7
9.8
14.1
13.5
13.3
16.7
9.3
9.8
9.5
9.6
9.2
8.7
3.4
3.3
3.4
3.4
3.4
4.2
4.2
+ 4.2
0.9
1.3
0.8
1.0
0.7
1.1
1.3
1.0
1.3
0.8
0.9
0.9
1.3
0.9
0.8
1.1
1.0
1.4
0.5
0.5
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
See Appendix Figure 2.1 for the verification areas.
7
Appendix Table 3.2
Radon Decay-Product Concentration (RDC) Measurement Results
DOE ID No.: MS-00145-RS
Address: 600 South Cemetery Road, Monticello, Utah
Instrument Type: Terradex Track EtchR Detector
Radon Average
Detector Tracks Per Concentration Working
Number Start Date End Date mm2 (pCi/1) Level (WL)
639019
639000
639030
12-21-87
12-21-87
12-21-87
01-18-89
01-18-89
01-18-89
11.18
11.08
10.84
1.17
1.16
1.13
0.0059
0.0058
0.0057
Annual Average: 0.0058
See Appendix Figure 2.1 for the measurement location.
BGS:05/23/89
MS00145-RS:MS-05
REV 04/11/89
8
40 40
V-7 V-12
18-22 17-24
V-13
18-21
38 38
V-14
18-21 .VT8
18-21 V-t5
18-21 36 36
V-9
2 18-20
"It 34 34 ®
v-io
18-22
32 32
ONE STORY
HOUSE
23 30 30
LLSEMQ.
ALL DEPTHS IN INCHES
ALL EXPOSURE—RATES IN M R/h
(A) ASSESSED AREA IDENTIFIER
<§) AVERAGE DEPTH OF ASSESSED CONTAMINATION
AREA OF ASSESSED CONTAMINANTS
7; IRDC)
28 28
0
5* V-17
19-22 12-19 POST REMEDIAL ACTION EXPOSURE—RATE RANGE
— BOUNDARY OF EXCAVATION
rrn AVERAGE EXCAVATED DEPTH FOR THE DEPOSIT
ll±J OF CONTAMINATION
26 26 STDWAGF V-l
16-19
r V-1 VERIFICATION SOIL SAMPLE AREA IDENTIFIER
AND EXCAVATION EXPOSURE-RATE RANGE i 24 11-17 24
POSr REMEDIAL ACTION RADON OECAY-PROOUCT
EES' CONCENTRATION MEASUREMENT LOCATION 17-20
ASSESSED CONTAMINANTS NOT FOUND AT
TIME OF REMEDIAL ACTION V-18
19-29 22 22
1
- 20 20
RADIOLOGICAL AS-BUILT
FIGURE 2,1 V-2
17- 19 - 18 18
V-5
17-21 16 . 16
EXTERIOR EXTENT OF CONTAMINATION
14 4
U.S. DEPARTMENT OF ENERGY
WaNB ,umCl*)* ••O^tCT) at net, CfliO«00 20 : 10 :20 40
^ 600 SOUTH CEMETERY ROAD 12 12 This drawing, prepared for the Surplus Facilities
Management Program, is lor the solo UM ol th* U.S.
Oepertment of Energy end It* contractors. It is not s land
survoy plat or an improvement survey plat and ia not to b«
rolled upon for tha establishment of fonos, building, or
other future improvement lines.
^ MONTICELLO, UTAH FEET
HE
OOC 0 10 MS-00M5-RS UNC Geotech
51 mm* I I I I I I ft I ft 10 52 12 14 16 18 30 10 4U
4
OAK RIDGE NATIONAL LABORATORY
OPERATED BY MARTIN MARIETTA ENERGY SYSTEMS. INC.
GRAND JUNCTION OFFICE
P. O BOX 2567
GRAND JUNCTION. COLORADO 81502
May 8, 1990
W. E. Murphie
SFMP Program Manager
Division of Facility and Site
Decommissioning Projects
Office of Nuclear Energy
U.S. Department of Energy
MS - NE-20
Washington, DC 20545
Dear Mr. Murphie:
Verification Statements for Monticello Vicinity Properties
Enclosed please find the verification statements for:
These properties were subject to Type A verification (completion report
review and confirmatory analysis). The official IVC reports are currently
in publication.
MJW/mjw
cc: B. Berven, ORNL
M. Landis, DOE/IIQ-DFSD
B. Mathis, UNC
D. MacKenzie, RFW
D. Williamson, D0E/GJP0
MS00071-RS 464 South 1st East Street
MS00145-RS 600 South Cemetery Road
MS00153-VL 87 East 500 South Street
MS00168-VL 397 East 3rd South Street
Sincerely,
Mary J. Wilson
Pollutant Assessments Group
VERIFICATION STATEMENT FOR MS00145-RS, 600 SOUTH CEMETERY ROAD
An Independent assessment of remedial action activities at 600 South
Cemetery Road, Monticello, Utah, has been accomplished by the ORNL Pollutant
Assessments Center (PAC). The purpose of the assessment is to verify the
data supporting the adequacy of the remedial action and to confirm the
site's compliance with DOE guidelines. The assessment included reviews of
data provided in the post-remedial action report, and remedial action plans
and activities as well as verification analysis of archived post-remedial
action soil samples.
A review of procedures and techniques suggests that the procedures used
to develop the data presented in the post-remedial action report are
adequate to characterize the final radiological condition of 600 South
Cemetery Road, Monticello, Utah, and that based on the data in the post-
remedial action reports, the site conforms to the remedial action criteria
for the Monticello Vicinity Properties (MVP).
DOE ID NO. : MS- OO M 5 ~ R-S
Property Address: 60O 5o>utV> Ceme.'hr^ fioqc/
VICINITY PROPERTY CERTIFICATION SUMMARY AND RECOMMENDATION
SUMMARY EVALUATION
U.S. Department
Chem-Nuclear Geotech, Inc. of Energy (DOE)
YES NO NOT TAKEN YES NO NOT TAKEN
Ra-226 is < 5 pCi/g
above background in top
15-cm layer of soil
averaged over 100 m2. _
In-situ [X] Lab [ ]
Ra-226 is < 15 pCi/g
above background in any
15-cm layer of soil
more than 15 cm below
the surface averaged
over 100 m2.
In-situ [ ] Lab fc><]
[X]' ( ] [ ] [ ] [ ]
[x] [ 1 [ ] [ ] ( )
Interior gamma is < 20 pR/h
above background in any
occupied or habitable
structure. CX] ( ] [ ] (/] [ ] [ ]
The radon decay-product
concentration in any
occupied or habitable
structure is < 0.02
working levels or, at
most, 0.03 working levels. fcxj [ ] [ ] p^J [ ] [ ]
Supplemental standards were
applied in accordance with .
EPA standard 40 CFR 192.21. [ ] Cxi [ ] [ ] [A) M
Hot spot criteria met as
outlined by U.S. DOE
guidelines for FUSRAP and
SFMP (Rev. 03/02/87). [ ] [ ] M MM [X)
COMMENTS: *The excavations were backfilled with materials which were measured
at the source showing that the Ra-226 concentrations are in the range of
normal background. Other surface areas were verified on the basis of gamma
exposure rates which do not exceed 30-percent above normal background
DOE ID NO.: MS- QCM^S ~ R'b
CHEM-NUCLEAR GEOTECH, INC., RECOMMENDATION
Based on the Chem-Nuclear Geotech, Inc., evaluation, I recommend this property
for:
[X] Certification by the Department of Energy.
[ ] Certification by the Department of Energy with the concurrence of the
Nuclear Regulatory Commission because supplemental standards were
applied per 40 CFR 192.21.
~2 Harry A. Perry y/ Date
SFMP Manager
Chem-Nuclear Geotech, Inc.
DOE EVALUATION
[X] Should be certified by the Department of Energy.
[ ] Should be certified by the Department of Energy with the concurrence
of the Nuclear Regulatory Commission because supplemental standards
were applied per 40 CFR 192.21.
91
SFMP-'Certification Official Date
Department of Energy
PROPERTY COMPLETION REPORT
FOR
MONTICELLO
VICINITY PROPERTY REMEDIAL ACTION
FOR
DOE ID NO.: MS-00153-VL
ADDRESS: 87 EAST 500 SOUTH
MONTICELLO. UTAH 84535
SEPTEMBER 1989
Prepared for
Surplus Facilities Management Program
Division of Facilities and Site Decommissioning
Department of Energy
by
UNC Geotech
P.O. Box 14000
Grand Junction. Colorado 81502-5504
Brian Mathis
Program Manager
UNC Geotech has been granted authorization to perform remedial action under
the Surplus Facilities Management Program. Remedial action was done in
accordance with the Environmental Protection Agency (EPA) Standards for
Cleanup of Lands and Buildings Contaminated with Residual Radioactive Material
from Inactive Uranium Processing Sites, 40 CFR 192.12. 192.20-23.
MS-00153-VL:PCR-MS4
TABLE OF CONTENTS
Section Page
1.0 SUMMARY 1
1.1 Basis for Remedial Action 1
1.2 Criteria for Remedial Action 1
1.3 Summary of Remedial Action 2
2.0 OPERATIONS SUMMARY 3
2.1 Abstract of Remedial Action Plan 3
2.2 Previously Unidentified Contamination 3
2.3 Unanticipated Items During Remedial Action 3
2.4 Application of Supplemental Standards 3
3.0 VERIFICATION SUMMARY 4
3.1 Radiological Survey Data 4
3.1.1 Pre-Remedial Action Survey 4
3.1.2 Post-Excavation Survey 4
3.2 Recommendation for Certification 5
Certification Data Summary 5
4.0 APPENDIX 6
i
DOE ID NO.: MS-00153-VL
1.0 SUMMARY
1.1 Basis for Remedial Action
The Monticello Vicinity Properties (MVP) project was accepted into
the Surplus Facilities Management Program (SFMP) with the primary
objective of reducing the potential hazard to the public due to
long-term exposure to low-level radioactivity associated with the
offsite mill tailings derived from the former U.S. Atomic Energy
Commission (AEC) uranium mill.
The original mill, built in 1942, was financed by the United States
Government through its agent, the Defense Plant Corporation, to
provide additional sources of vanadium needed during World War II.
Various government agencies operated the mill until 1947. The AEC
obtained the mill in 1948 and operated it through 1959 under
cost-type contracts to provide both uranium and vanadium. Mill
operations were terminated on January 1, 1960.
The mill processed approximately one million tons of ore during the
AEC operations. Throughout the operating period, tailings from the
Monticello millsite were removed from the site and used for
construction-related activities in the vicinity.
1.2 Criteria for Remedial Action
The SFMP has adopted the "Standards for Remedial Action at Inactive
Uranium Processing Sites" (40 CFR Part 192) as guidelines for all
cleanup activities under the MVP project. These standards were
prepared by the Environmental Protection Agency (EPA) to establish
guidelines for the control of tailings piles and the cleanup of
buildings and open lands.
The subject property was evaluated on the basis of the EPA standards
by the Remedial Action Contractor. The Department of Energy (DOE)
reviewed these evaluation results and determined that residual
radioactive materials in excess of the EPA standards were present on
the property. UNC Geotech/Grand Junction Projects Office was
notified of the inclusion of this property into the SFMP program and
authorized by the DOE to perform remedial action as required to
bring the property into conformance with the EPA standards.
1
DOE ID NO.: MS-00153-VL
Suuary of Remedial Action
DOE ID No.:
Legal Description:
Property Address:
Property Owners:
Property Category:
Inclusion Survey Contractor:
Inclusion Notification Date:
Remedial Action Contractor:
Radiological & Engineering
Assessment (REA):
Construction Subcontractor:
Pre-Construction Conference
Record:
Notice of Pinal Completion
Inspection:
Volume of Material
Removed:
Area Cleaned Up:
Property Completion Report
Submitted:
MS-00153-VL
Parcel No. M-642, Lot 6, Block 3,
City of Monticello, County of San
Juan, State of Utah
87 East 500 South
Monticello. Utah 84535

Vacant Lot (VL)
Not applicable: spillover inclusion
requested by the Remedial Action
Contractor
June 26, 1987
UNC Geotech
September 25, 1987
Bayless and Bayless, Inc.
1900 Saint Charles Road
Pueblo, Colorado
June 6, 1988
July 1, 1988
Exterior: 261 cu. yd.
Interior: 0 cu. yd.
557 m2
September 1989
DOE ID NO.: MS-00153-VL
2.0 OPERATIONS SUMMARY
2.1 Abstract of Remedial Action Plan
The remedial action plan involved removal of exterior contamination
(Appendix Figure 2.1). Once excavation was complete, the affected
areas were resurveyed for possible remaining contamination and, upon
attaining satisfactory results, were backfilled with uncontaminated
material. The property was restored to a condition comparable to
that which existed prior to remedial action activities.
2.2 Previously Unidentified Contamination
The original radiological assessment identified 271 cu. yd. of
tailings, from 6 inches to 18 inches deep, within the property. The
remedial action process included the removal of 261 cu. yd. of
residual radioactive material, ranging from 6 inches to 20 inches
deep (Appendix Figure 2.1).
The difference between the original assessment and the actual
material removed is shown in Appendix Figure 2.1.
2.3 Unanticipated Items During Remedial Action
None.
2.4 Application of Supplemental Standards
Supplemental standards were not applicable to the tailings removal
activities performed on the property.
3
DOE ID NO.: MS-00153-VL
3.0 VERIFICATION SUMMARY
3.1 Radiological Survey Data
All survey data were acquired according to approved procedures.
3.1.1 Pre-Remedial Action Survey
A radiological survey was conducted by UNC Geotech during
July 1987. as described in the final REA, dated September
1987. Appendix Figure 2.1 shows the extent of contamination
determined during the pre-remedial assessment and identifies
the areas recommended to undergo remedial action.
3.1.2 Post-Excavation Survey
A ground-level gamma scan with a scintillometer was performed
after the removal of contamination and prior to backfilling.
Following the gamma scan, soil samples representative of the
6-inch-thick soil layer at the bottom of the excavation were
collected. The samples were blended to form composite
samples representing an average over the verification areas
(Appendix Figure 2.1).
Exterior Findings: Surface exposure-rate values determined
during the gamma scan ranged from 14 jzR/h to 26 (iR/h
(Appendix Figure 2.1). The results of analyses for Ra-226 in
eight composite soil samples taken from the excavated areas
ranged from 1.0 pCi/g to 3.0 pCi/g (Appendix Table 3.1).
4
DOE ID NO.: MS-00153-VL
3.2 Recommendation For Certification
Residual radioactive materials have been removed from this property
to the extent required by the EPA standards (40 CFR 192.12,
192.20-23). (See Certification Data Summary below.)
Therefore, the property located at 87 East 500 South, in
Monticello, Utah, is recommended for certification as required by
the SFMP Project guidelines, and the appropriate record should be
documented.
Certification Data Summary
Applicability Standards Survey Results
Habitable Structures
Exposure Rate: Shall not exceed 20 (iR/h
above background.
Not applicable;
vacant lot.
Radon Decay-Product
Concentration:
Land
Radium-226 Concentration
in Surface Soil:
Annual average shall not
exceed 0.02 WL, to the
extent practicable, and
in no case shall exceed
0.03 WL.
Shall not exceed 5 pCi/g
above background* in
the 15-cm surface layer,
averaged over 100 m2.
Not applicable;
vacant lot.
< 5 pCi/g above
background.
Radium-226 Concentration
in Subsurface Soils:
Shall not exceed 15 pCi/g
above background* in any
15-cm-thick soil layer
more than 15 cm below the
surface, averaged over
100 m2.
The soil sample
results ranged from
1.0 pCi/g to 3.0 pCi/g
(Appendix Table 3.1).
*The background radium-226 concentration is approximately 2.0 pCi/g.
5
DOE ID NO.: MS-00153-VL
4.0 APPENDIX
Appendix Table:
Table 3.1 Post-Excavation Sample/Measurement Results
Appendix Figure:
Figure 2.1 Exterior Extent of Contamination - RADIOLOGICAL
AS-BUILT
6
Appendix Table 3.1
Post-Excavation Sample/Measurement Results
DOE ID No.: MS-00153-VL
Address: 87 East 500 South, Monticello, Utah
The analytical uncertainties in the table are reported at the 95-percent
confidence interval.
Area
Exposure-Rate
Range (fiR/h)
Soil Sample
Ticket No.
Ra-226
(pCi/g)
Potassium
(PCi/g)
Thorium
(pCi/g)
V-l
V-2
V-3
V-4
V-5
V-6
V-7
V-8
16
16
15
16
16
16
16
15
19
18
18
18
19
21
24
26
MNK 003
MNK 004
MNK 005
MNK 006
MNK 007
MNK 008
MNK 009
MNK 010
3.0
1.0
1.1
2.0
1.9
1.7
1.8
1.4
0.5
0.2
0.2
0.4
0.3
0.3
0.3
0.3
17.4
16.8
18
20
18
17
18.8
19.4
3.4
3.4
3.4
3.8
3.4
3.3
3.5
3.6
1,
0.
1.
1,
0.
0.9
1.4
0.9
0.3
0.2
0.3
0.3
0.3
0.2
0.3
0.2
See Appendix Figure 2.1 for the verification areas.
BGS:04/21/89
MS-00153-VL:MS4
REV 04/11/89
7
10 12 14 16 18 20 22 24
30 1 1 1 \ i—i—i—r
28 -
26 -
24
22
20
18
16
14
12
10
I I
V-8
15-26 1fl 1fl
20 20
V-7 :
16-24 V-6
16-21
20 18
V-5
20
: V-3
:15-18
26
SHOP
V-1
H6-19
L I5-2I
SCALE IN FEET Y x
ii
10 20 • 20 40
26
"l—T
28
T~
30 32 34 36 38
10
A
i—i—i—\—i—i—i—i—i—r
1ESE1&
ALL DEPTHS IN: iNCHes
ALL. EXPOSURE-RATES IN fi R/h
. ASSESSED. AREA.IDENTIFIER;
AVERAGE! DEPTH OF ASSESSED CONTAMINATION
AREA OF ASSESSED -CONTAMINANTS
POST REMEDIAL ACTION EXPOSURE—RATE RANGE
BOUNDARY OF EXCAVATION
AVERAGE;EXCAVATED DEPTH FOR THE DEPOSIT
OF:: CONTAMINATION.... I
12-15
12
V-1
16-171
VERIFICATION SOIL SAMPLE AREA IDENTIFIER
AND EXCAVATION EXPOSURE—RATE RANGE
ASSESSED CONTAMINANTS NOT FOUND AT
TIME OF REMEDIAL ACTION
RADIO
FIGURE: 271
LOGICAL AS-BUILT
EXTERIOR EXTENT OF CONTAMINATION
40
2£
26
24
2C
18
16
This drawing, prepared for the 'Surplus ".Facilities'
Management • Prograirr.-ls for ttve scrie use tjf the U.S.
Department of Energy and its contractors. It js not a •
OC land survey! plat or an improvement purvey plat and is
. O...; not to. be rried .upon .tat the; establishment oHence,.;
z buBding, oriother future improvement lines
12 14 16 18 20
J I I I I I I L 1
RESIDENCE-NO. OF OCCUPANTS
NON-RESIDENCE —MAN-HRS./WK.
INSTRUMENT NO. SURVEVOR
SURVEY DATE
VERIFICATION
BY CK. A.E. APP. NO. DATE BY CK. A.E. APP.
14
U.S. DEPARTMENT OF ENERGY
GRAND JUNCTION PROJECTS OFFICE. COLORADO
jP
5E5
W-i 9-H
87 EAST 500 SOUTH
MONTICELLO, UTAH
22 24 26 28 30 32
UNO Geotech
34
APPROVAL DOE
MS-OOI53-VL
a NO3-BO0lS3-0<W I ar I
36 38 40
OAK RIDGE NATIONAL LABORATORY
OPERATED BY MARTIN MARIETTA ENERGY SYSTEMS. INC.
GRAND JUNCTION OFflCE
P 0 BOX 2567
GRAND JUNCTION. COLORADO.81502
May 8, 1990
W. E. Murphie
SFMP Program Manager
Division of Facility and Site
Decommissioning Projects
Office of Nuclear Energy
U.S. Department of Energy
MS - NE-20
Washington, DC 20545
Dear Mr. Murphie:
Verification Statements for Monticello Vicinity Properties
Enclosed please find the verification statements for:
These properties were subject to Type A verification (completion report
review and confirmatory analysis). The official IVC reports are currently
in publication.
MJW/mjw
cc: B. Berven, ORNL
M. Landis, DOE/HQ-DFSD
B. Mathis, UNC
D. MacKenzie, RFW
D. Williamson, DOE/GJPO
MS00071-RS 464 South 1st East Street
MS00145-RS 600 South Cemetery Road
MS00153-VL 87 East 500 South Street
MS00168-VL 397 East 3rd South Street
Sincerely,
Pollutant Assessments Group
VERIFICATION STATEMENT FOR MS00153-VL, 87 EAST 500 SOUTH STREET
An independent assessment of remedial action activities at 87 East
500 South Street, Monticello, Utah, has been accomplished by the ORNL
Pollutant Assessments Center (PAC). The purpose of the assessment is to
verify the data supporting the adequacy of the remedial action and to
confirm the site's compliance with DOE guidelines. The assessment included
reviews of data provided in the post-remedial action report, and remedial
action plans and activities as well as verification analysis of archived
post-remedial action soil samples.
A review of procedures and techniques suggests that the procedures used
to develop the data presented in the post-remedial action report are
adequate to characterize the final radiological condition of 87 East 500
South Street, Monticello, Utah, and that based on the data in the post-
remedial action reports, the site conforms to the remedial action criteria
for the Monticello Vicinity Properties (MVP).
DOE ID NO.: MS- OO f 55 ~ \J <-
Property Address: &1 BaST Fifth SoutK Street"
VICINITY PROPERTY CERTIFICATION SUMMARY AND RECOMMENDATION
SUMMARY EVALUATION
Chem-Nuclear Geotech, Inc.
YES NO NOT TAKEN
Ra-226 is < 5 pCi/g
above background in top
15-cm layer of soil
averaged over 100 m2.
In-situ [X] Lab [ ]
Ra-226 is < 15 pCi/g
above background in any
15-cm layer of soil
more than 15 cm below
the surface averaged
over 100 m2.
in-situ [ ] Lab T><]
Interior gamma is < 20 /uR/h
above background in any
occupied or habitable
structure.
The radon decay-product
concentration in any
occupied or habitable
structure is < 0.02
working levels or, at
most, 0.03 working levels.
Supplemental standards were
applied in accordance with
EPA standard 40 CFR 192.21.
Hot spot criteria met as
outlined by U.S. DOE
guidelines for FUSRAP and
SFMP (Rev. 03/02/87).
[X]* [ ] [ ]
CX]
[ ]
( ]
[ ]
[ ] { ]
( ] [X]
(Vacant Lot)
( ] [X]
(Vacant Lot)
( 1
[ ] [ ] IXJ
U.S. Department
of Energy (DOE)
YES NO NOT TAKEN
{ 1
( ]
( ]
[ ]
[ ]
t 1
[ 1
[ 1
[ 3
( ]
04
COMMENTS: *The excavations were backfilled with materials which were measured
at the source showing that the Ra-226 concentrations are in the range of
normal background. Other surface areas were verified on the basis of gamma
exposure rates which do not exceed 30-percent above normal background
DOE ID NO. : MS- OO 1 5 3 ~ \J L-
CHEM-NUCLEAR GEOTECH, INC., RECOMMENDATION
Based on the Chem-Nuclear Geotech, Inc., evaluation, I recommend this property
for:
[X] Certification by the Department of Energy.
[ ] Certification by the Department of Energy with the concurrence of the
Nuclear Regulatory Commission because supplemental standards were
applied per 40 CFR 192.21.
^2f^_ t^K^. 7-/-*'
Harry A."" Perr^ <^ Date
SFMP Manager
Chem-Nuclear Geotech, Inc.
DOE EVALUATION
[Xl Should be certified by the Department of Energy.
[ ] Should be certified by the Department of Energy with the concurrence
of the Nuclear Regulatory Commission because supplemental standards
were applied per 40 CFR 192.21.
SFMP Certification Official
Department of Energy
7 10
Date
PROPERTY COMPLETION REPORT
FOR
MONTICELLO
VICINITY PROPERTY REMEDIAL ACTION
FOR
DOE ID NO.: MS-00168-VL
ADDRESS: 397 EAST 300 SOUTH STREET
MONTICELLO, UTAH 84535
SEPTEMBER 1989
Prepared for
Surplus Facilities Management Program
Division of Facilities and Site Decommissioning
Department of Energy
by
UNC Geotech
P.O. Box 14000
Grand Junction, Colorado 81502-5504
Brian Mathis
Program Manager
UNC Geotech has been granted authorization to perform remedial action under
the Surplus Facilities Management Program. Remedial action was done in
accordance with the Environmental Protection Agency (EPA) Standards for
Cleanup of Lands and Buildings Contaminated with Residual Radioactive Material
from Inactive Uranium Processing Sites, 40 CFR 192.12, 192.20-23.
MS-00168-VL:PCR-MS-04
TABLE OF CONTENTS
Section Page
1.0 SUMMARY 1
1.1 Basis for Remedial Action 1
1.2 Criteria for Remedial Action 1
1.3 Summary of Remedial Action 2
2.0 OPERATIONS SUMMARY 3
2.1 Abstract of Remedial Action Plan 3
2.2 Previously Unidentified Contamination 3
2.3 Unanticipated Items During Remedial Action 3
2.4 Application of Supplemental Standards 3
3.0 VERIFICATION SUMMARY 4
3.1 Radiological Survey Data 4
3.1.1 Pre-Remedial Action Survey 4
3.1.2 Post-Excavation Survey 4
3.2 Recommendation for Certification 5
Certification Data Summary 5
4.0 APPENDIX 6
i
DOE ID NO.: MS-00168-VL
1.0 SUMMARY
1.1 Basis for Remedial Action
The Monticello Vicinity Properties (MVP) project was accepted into
the Surplus Facilities Management Program (SFMP) with the primary
objective of reducing the potential hazard to the public due to
long-term exposure to low-level radioactivity associated with the
offsite mill tailings derived from the former U.S. Atomic Energy
Commission (AEC) uranium mill.
The original mill, built in 1942, was financed by the United States
Government through its agent, the Defense Plant Corporation, to
provide additional sources of vanadium needed during World War II.
Various government agencies operated the mill until 1947. The AEC
obtained the mill in 1948 and operated it through 1959 under cost-
type contracts to provide both uranium and vanadium. Mill
operations were terminated on January 1, 1960.
The mill processed approximately one million tons of ore during the
AEC operations. Throughout the operating period, tailings from the
Monticello millsite were removed from the site and used for
construction-related activities in the vicinity.
1.2 Criteria for Remedial Action
The SFMP has adopted the "Standards for Remedial Action at Inactive
Uranium Processing Sites" (40 CFR Part 192) as guidelines for all
cleanup activities under the MVP project. These standards were
prepared by the Environmental Protection Agency (EPA) to establish
guidelines for the control of tailings piles and the cleanup of
buildings and open lands.
The subject property was evaluated on the basis of the EPA standards
by the Remedial Action Contractor. The Department of Energy (DOE)
reviewed these evaluation results and determined that residual
radioactive materials in excess of EPA standards were present on the
property. UNC Geotech/Grand Junction Projects Office was notified
of the inclusion of this property into the SFMP program and
authorized by the DOE to perform remedial action as required to
bring the property into conformance with the EPA standards.
1
DOE ID NO.: MS-00168-VL
Summary of Remedial Action
DOE ID No.:
Legal Description:
Property Address:
Property Owner:
Property Category:
Inclusion Survey Contractor:
Inclusion Notification Date:
Remedial Action Contractor:
Radiological & Engineering
Assessment (REA):
Construction Subcontractor:
Pre-Construction Conference
Record:
Notice of Final Completion
Inspection:
Volume of Material
Removed:
Area Cleaned Up:
Property Completion Report
Submitted:
MS-00168-VL
Parcel No. M-604, City of Monticello,
County of San Juan, State of Utah
397 East 300 South Street
Monticello. Utah 84535

Vacant Lot (VL)
Not applicable; spillover inclusion
requested by the Remedial Action
Contractor
June 26, 1987
UNC Geotech
September 25, 1987
Bayless and Bayless, Inc.
1900 Saint Charles Road
Pueblo, Colorado
June 16, 1988
July 1, 1988
Exterior: 65 cu. yd.
Interior: 0 cu. yd.
186 m2
September 1989
DOE ID NO.: MS-00168-VL
2.0 OPERATIONS SUMMARY
2.1 Abstract of Remedial Action Plan
The remedial action plan involved removal of exterior contamination
(Appendix Figure 2.1). Once excavation was complete, the affected
areas were resurveyed for possible remaining contamination and, upon
attaining satisfactory results, were backfilled with uncontaminated
material. The property was restored to a condition comparable to
that which existed prior to remedial action activities.
2.2 Previously Unidentified Contamination
The original radiological assessment identified 63 cu. yd. of
tailings, from 6 inches to 15 inches deep, within the property.
The remedial action process included the removal of 65 cu. yd. of
residual radioactive material, ranging from 9 inches to 12 inches
deep (Appendix Figure 2.1).
The difference between the original assessment and the actual
material removed is shown in Appendix Figure 2.1.
2.3 Unanticipated Items During Remedial Action
None.
2.4 Application of Supplemental Standards
Supplemental standards were not applicable to the tailings removal
activities performed on the property.
3
DOE ID NO.: MS-00168-VL
3.0 VERIFICATION SUMMARY
3.1 Radiological Survey Data
All survey data were acquired according to approved procedures.
3.1.1 Pre-Remedial Action Survey
A radiological survey was conducted by UNC Geotech during
July 1987, as described in the final REA, dated September
1987. Appendix Figure 2.1 shows the extent of contamination
determined during the pre-remedial assessment and identifies
the areas recommended to undergo remedial action.
3.1.2 Post-Excavation Survey
A ground-level gamma scan with a scintillometer was performed
after the removal of contamination and prior to backfilling.
Following the gamma scan, soil samples representative of the
6-inch-thick soil layer at the bottom of the excavation were
collected. The samples were blended to form composite samples
representing an average over the verification areas
(Appendix Figure 2.1).
Exterior Findings: Surface exposure-rate values determined
during the gamma scan ranged from 12 /iR/h to 21 £iR/h
(Appendix Figure 2.1). The results of analyses for Ra-226 in
three composite soil samples taken from the excavated areas
ranged from 2.0 pCi/g to 7.1 pCi/g (Appendix Table 3.1).
4
DOE ID NO.: MS-00168-VL
3.2 Recommendation For Certification
Residual radioactive materials have been removed from this property
to the extent required by the EPA standards (40 CFR 192.12,
192.20-23). (See Certification Data Summary below.)
Therefore, the property located at 397 East 300 South Street, in
Monticello, Utah, is recommended for certification as required by
the SFMP Project guidelines, and the appropriate record should be
documented.
Certification Data Summary
Applicability
Habitable Structures
Exposure Rate:
Radon Decay-Product
Concentration:
Land
Radium-226 Concentration
in Surface Soil:
Radium-226 Concentration
in Subsurface Soils:
Standards
Shall not exceed 20 /iR/h
above background.
Annual average shall not
exceed 0.02 WL, to the
extent practicable, and
in no case shall exceed
0.03 WL.
Shall not exceed 5 pCi/g
above background* in
the 15-cm surface layer,
averaged over 100 m2.
Shall not exceed 15 pCi/g
above background* in any
15-cm-thick soil layer
more than 15 cm below the
surface, averaged over
100 m2.
Survey Results
Not applicable;
vacant lot.
Not applicable;
vacant lot.
< 5 pCi/g above
background.
The soil sample
results ranged from
2.0 pCi/g to 7.1 pCi/g
(Appendix Table 3.1).
*The background radium-226 concentration is approximately 2.0 pCi/g.
5
DOE ID NO.: MS-00168-VL
4.0 APPENDIX
Appendix Table:
Table 3.1 Post-Excavation Sample/Measurement Results
Appendix Figure:
Figure 2.1 Exterior Extent of Contamination - RADIOLOGICAL
AS-BUILT
6
Appendix Table 3.1
Post-Excavation Sample/Measurement Results
DOE ID No.: MS-00168-VL
Address: 397 East 300 South Street, Monticello, Utah
The analytical uncertainties in the table are reported at the 95-percent
confidence interval.
Exposure-Rate Soil Sample Ra-226 Potassium Thorium
Area Range UR/h) Ticket No. (pCi/g) (pCi/g) (pCi/g)
V-l 16 - 21 MNQ 712 7.1 + 1.1 15.8 + 2.9 0.7 + 0.2
V-2 13 - 15 MNQ 713 2.0+0.3 13.7+2.6 1.0+0.3
V-3 12 - 15 MNQ 714 2.3 + 0.4 14.1 + 2.6 0.9 + 0.3
See Appendix Figure 2.1 for the verification areas.
BGS:05/12/89
MS-00168-VL:PCR-MS-04
REV 04/11/89
7
28
24
22 rSHELV: INCLUDED AS
PART:OF MS-00108
12
10
:14-T7
14-17
12
16-17
v.
306
SOUtH
SHED
T4-17
16-17
12
A
—Ir
l~l
IPROPANE TANK
XT 3
tOPAJ*ETANK).
SCALE IN REET
focilities
use. .of the. IKS..:
20 MO 20 40
This drawing, prepared lor the Surplus
. Management.. p.r.og,rarn:... is.fontb.e .$P.le.
Department of. Energy;and its contractors. It is pot a
land survey pfat or an improvement survey plat;and is
not to be relied upon for the establishment of fence,
• bti'iltfih'g; 6f6th'erfutUtje fmproiirerrierit line's:" ":
10 12 18 22 24
1
28
34
ALL DEPTHS IN -INCHES
ALL EXPOSURE-RATES IN #
ASSESSED AREA IDENTIFIER
R/h
AVERAGE;DEPTH OF ASSESSED CONTAMINATION
AREA OF ASSESSED CONTAMINANTS
;12-15 POST REMEDIAL; ACTION EXPOSURfc-RATE RANGE
BOUNDARY OF EXCAVATION i
12 AVERAGE EXCAVATED DEPTK FOR THE DEPOSIT
.DECONTAMINATION....;
VERIFICATION SOIL SAMPLE AREA IDENTIFIER
ANP EXCAVATION EXPOSURE—RATE RANGE
ASSESSED CONTAMINANTS NOT FOUND AT
TIME OF REMEDIAL ACTION
— 28
24
-22
— 18
R^URrT 2;i
EXTERIOR EXTENT OF CONTAMINATION
- 16
NO. DATE
RESIDENCE-NO. OF OCCUPANTS
NON-RE SIP? MCE —MAN-HRS./WK.
INSTRUMENT NO SURVEYOR
SURVEY DATE
VERIFICATION
BV CK A.E. APR NO. DATE BY CK. A.E. APP.
U.S. DEPARTMENT OF ENERGY
GRAND JUNCTION PROJECTS OFFICE, COLORADO
| DATE
SUBMITTED
397 EAST 300 SOUTH STREET
MONTICELLO, UTAH
12
DATE APPROVAL DOE
UNO Geotech
34 36
DOE ID NO. MS-00168-VL
33-B00168-C4,HT1 o, 1
OAK RIDGE NATIONAL LABORATORY
OPERATED BV MARTIN MARIETTA ENERGY SYSTEMS. INC.
GRAND JUNCTION OFTICE
P O BOX 2567
GRAND JUNCTION. COLORADO 81502
May 8, 1990
W. E. Murphie
SFMP Program Manager
Division of Facility and Site
Decommissioning Projects
Office of Nuclear Energy
U.S. Department of Energy
MS - NE-20
Washington, DC 20545
Dear Mr. Murphie:
Verification Statements for Monticello Vicinity Properties
Enclosed please find the verification statements for:
These properties were subject to Type A verification (completion report
review and confirmatory analysis). The official IVC reports are currently
in publication.
MJW/mj w
cc: B. Berven, ORNL
M. Landis, D0E/I1Q-DFSD
B. Mathis, UNC
D. Mackenzie, RFW
D. Williamson, D0F./GJP0
MS00071-RS
MS0014 5-RS
MS00153-VL
MS00168-VL
464 South 1st East Street
600 South Cemetery Road
87 East 500 South Street
397 East 3rd South Street
Sincerely,
Mary J. Wilson
Pollutant Assessments Group
VERIFICATION STATEMENT FOR MS00168-VL, 397 EAST 3RD SOUTH STREET
An independent assessment of remedial action activities at 397 East
3rd South Street, Monticello, Utah, has been accomplished by the ORNL
Pollutant Assessments Center (PAC). The purpose of the assessment is to
verify the data supporting the adequacy of the remedial action and to
confirm the site's compliance with DOE guidelines. The assessment included
reviews of data provided in the post-remedial action report, and remedial
action plans and activities as well as verification analysis of archived
post-remedial action soil samples.
A review of procedures and techniques suggests that the procedures used
to develop the data presented in the post-remedial action report are
adequate to characterize the final radiological condition of 397 East 3rd
South Street, Monticello, Utah, and that based on the data in the post-
remedial action reports, the site conforms to the remedial action criteria
for the Monticello Vicinity Properties (MVP).
DOE ID Number: MS00168
Property Address: 397 East 300 South Street
Monticello. Utah 84535
Date: February 14. 1990
Author: D. S. List
IVC Description of Findings
This summary describes the findings of the IVC after review of the Completion
Report, information in the property portfolio, and analysis of other available data.
Soil samples taken by UNC Geotech from the excavated areas prior to backfilling were
blended to form three composite soil samples. Analysis is given on the VPIV Soil
data sheet.
A review of the completion report and folio for location MS00168 found the property
to be in compliance with EPA regulations for 226Ra concentrations in surface and
subsurface soil layers.
The steel shed on the property was not surveyed as part of MS00168 but was assessed
as part of MS00108.
A discrepancy between the draft completion report in the folio and the typed
completion report in regards to the amount of cubic yards removed and area cleaned
up. The draft states 2.0 m2 as the area cleaned up, and the volume of material
removed as 60 cubic yards. The typed completion report states the area cleaned up
as 186 m2 and 65 cubic yards of material removed.
There is also a discrepancy In the completion report, Section 1.3, regarding the
parcel number of the property. The parcel number used by UNC Geotech is obsolete
and has been updated by San Juan County and the State of Utah, -This dlsu'eLiauiv '
should be corrected prior to verification of the RAC'b findings.
Based upon the results of the post-remedial-action data the IVC concludes that the
site successfully meets the DOE remedial action objectives.
DOE ID NO. : MS- QO\G & - \J t-
Property Address: 3*? ? EAST- TLvd SQUU Street/
VICINITY PROPERTY CERTIFICATION SUMMARY AND RECOMMENDATION
SUMMARY EVALUATION
U.S. Department
Chem-Nuclear Geotech, Inc. of Energy (DOE)
YES NO NOT TAKEN YES NO NOT TAKEN
Ra-226 is < 5 pCi/g
above background in top
15-cm layer of soil
averaged over 100 m2.
In-situ [X] Lab [ ]
Ra-226 is < 15 pCi/g
above background in any
15-cm layer of soil
more than 15 cm below
the surface averaged
over 100 m2. • fj^] [ ] [ • j
In-situ [ ) Lab £><3
Interior gamma is < 20 pR/h
above background in any
occupied or habitable
structure.
The radon decay-product
concentration in any
occupied or habitable
structure is < 0.02
working levels or, at
most, 0.03 working levels.
Supplemental standards were
applied in accordance with
EPA standard 40 CFR 192.21.
Hot spot criteria met as
outlined by U.S. DOE
guidelines for FUSRAP and
SFMP (Rev. 03/02/87). ( ] [ ] f><] ( ] [ ] _ (ft
COMMENTS: *The excavations were backfilled with materials which were measured
at the source showing that the Ra-226 concentrations are in the range of
normal background. Other surface areas were verified on the basis of gamma
exposure rates which do not exceed 30-percent above normal background.
[X]' I ) I ) ( ] [ )
c i [ i m till 00
(Vacant Lot)
[ ] [ ] [X] [ ] I 1 tXj
(Vacant Lot)
MM I 1 M £0 I J
DOE ID NO. : MS- Q^1 ^3 — V 1—
CHEM-NUCLEAR GEOTECH, INC., RECOMMENDATION
Based on the Chem-Nuclear Geotech, Inc., evaluation, I recommend this property
for:
[X] Certification by the Department of Energy.
[ ] Certification by the Department of Energy with the concurrence of the
Nuclear Regulatory Commission because supplemental standards were
applied per 40 CFR 192.21.
ry Harry
SFMP Manager
Chem-Nuclear Geotech, Inc.
Date
DOE EVALUATION
[•)(] Should be certified by the Department of Energy.
[ ] Should be certified by the Department of Energy with the concurrence
of the Nuclear Regulatory Commission because supplemental standards
were applied per 40 CFR 192.21.
salification Official SFMP Cei
Department of Energy
7 9/
Date