1990-03 – DOE – Radiological Characterization Report for FUSRAP properties in the St. Louis, Missouri, Area

1990-03-doe-radiological-characterization-report-for-fusrap-properties-in-the-st-louis-missouri-area

Leave a Reply

Your email address will not be published. Required fields are marked *

DOE/OR/20722-203
o 19
RADIOLOGICAL CHARACTERIZATION REPORT FOR
FUSRAP PROPERTIES IN THE ST. LOUIS. MISSOURI, AREA
VOLUME I
MARCH 1990
Prepared for
United States Department of Energy
Oak Ridge Operations Office
Under Contract No. DE-AC05-810R20722
S00183393
SUPERFUND RECORDS
By
K. C. Noey
C. M. Sekula
Bechtel National, Inc.
OaK Ridge. Tennessee
Bechtel Job No. 14501

EXECUTIVE SUMMARY
Radiological characterization surveys were conducted on properties
located in Hazelwood, Berkeley, and St. Louis, Missouri. Areas
surveyed include the Norfolk and Western Railroad Properties;
portions of Latty Avenue, McDonnell Boulevard, Hazelwood Avenue, and
Pershall Road (the haul roads) and associated properties; Latty
Avenue vicinity properties; portions of Coldwater Creek and its
vicinity properties; and the St. Louis Airport Site (SLAPS) vicinity
properties.
The surveys were performed as part of the Formerly Utilized Sites
Remedial Action Program (FUSRAP), a U.S. Department of Energy (DOE)
program to identify and clean up or otherwise control sites where
residual radioactive contamination (exceeding current guidelines)
remains from the early years of the nation’s atomic energy program
or from commercial operations causing conditions that Congress has
mandated DOE to remedy.
These St. Louis sites have been included on the National Priorities
List, a list of sites identified for remedial action under the
Comprehensive Environmental Response, Compensation, and Liability
Act of 1980, also known as Superfund. Plans are currently under way
to initiate a remedial investigation/feasibility study (RI/FS) for
the St. Louis sites. The data collected from the radiological
surveys discussed in this report will be incorporated into the RI
and FS processes for these sites.
Radiological surveys were conducted on Missouri FUSRAP properties
for DOE from 1986 through 1989 by Bechtel National, Inc., the FUSRAP
project management contractor, and its radiological subcontractor.
Thermo Analytical/Eberline. The results are presented in this
report. The goal of the surveys was to identify radionuclides
present on the properties at above-guideline concentrations and to
determine depths and areal limits of such radioactive
iii

contamination. This goal was achieved; however, there are some
properties identified in this report for which the precise
boundaries of radioactive contamination have not yet been
determined. A limited number of additional soil samples will be
required to define the extent of contamination identified for these
properties. Data collected from areas adjacent to these properties
have been extrapolated, both horizontally and vertically, to provide
a conservative overestimate of the volume of contaminated soil
present. Additional soil samples will be collected and analyzed
from these limited areas before remedial action begins. The data
from these additional soil samples will be provided in an addendum
to this characterization report.
Survey results indicate that radioactive contamination is present on
some of the properties in concentrations exceeding current DOE
guidelines. In general, the contamination is shallow (i.e.,
confined to the top two feet of soil) and occurs in relatively low
concentrations. The principal radioactive contaminant is
thorium-230, although analyses also identified elevated levels of
uraniura-238 and radium-226.
Although thorium-230 was identified in concentrations exceeding DOE
guidelines, there are no immediate health risks to people in the
vicinity, given the current use of the properties. Thorium-230
emits alpha radiation, which cannot penetrate the dead layer of skin
on a person’s body; therefore, there is no external exposure
hazard. Thorium-230 poses a radiological hazard only if it is
ingested or inhaled. The guidelines were derived to protect a
member of the general public even if an individual built a house
over the contamination, lived there for 50 years, grew all his own
food, ate meat from cattle grazing in the area, drank milk from cows
grazing in the area, and drank water from the contaminated area.
Because none of these pathways of exposure applies at the St. Louis
FUSRAP properties, and given the nature of thorium-230, the
contamination poses virtually no hazard.
iv

Throughout the RI/PS process, public comments will be solicited to
provide an opportunity for the public to participate in the design
and implementation of the RI/PS process and, ultimately, to allow
for public involvement in the selection of cleanup options. At this
point, most of the field investigations necessary for the St. Louis
area PUSRAP sites have been completed. Data from these
investigations will be documented in an RI report. The PS will
utilize information from the RI to develop and evaluate cleanup
alternatives and will ultimately lead to a record of decision by the
U.S. Environmental Protection Agency (EPA) and DOE for
implementation of the selected alternative. It is important to
realize, however, that selection of a final cleanup alternative will
be done as part of the RI/PS process described above. This process
will evaluate a full range of reasonable alternatives including
on-site disposal (i.e., at SLAPS) and off-site disposal. The public
will have a continuing role in the process through review of reports
and attendance at public meetings. Oversight of the entire RI/PS
process will be provided by EPA and the Missouri Department of
Natural Resources.

TABLE OF CONTENTS
Page
List of Figures xi
List of Tables xxv
Acronyms xxvi
Abbreviations xxvii
1.0 Introduction 1-1
1.1 Purpose and Objectives l-l
1.2 Location and Description 1-3
1.3 History and Previous Radiological Surveys 1-13
1.3.1 Latty Avenue Vicinity Properties 1-16
1.3.2 Coldwater Creek and Vicinity Properties 1-17
1.3.3 Norfolk and Western Railroad Properties
and SLAPS Vicinity Properties 1-18
1.3.4 Haul Roads 1-18
References for Section 1.0 1-19
2.0 Study Area Investigation 2-1
2.1 Grid System 2-1
2.2 Radiological Surveys 2-5
2.2.1 Methods 2-5
2.2.2 Sample Collection and Analysis 2-10
2.3 Characterization Results 2-12
2.4 Background Measurements 2-14
Reference for Section 2.0 2-16
3.0 Characterization Results for the Latty Avenue
Vicinity Properties 3-1
3.1 Property 1 3-1
3.2 Property 2 3-2
3.3 Property 3 3-3
3.4 Property 4 3-3
3.5 Property S 3-4
3.6 Property 6 3-4
vi

TABLE OP CONTENTS (continued)
Page
4.0 Characterization Results for the Norfolk and Western
Railroad Properties 4-1
4.1 Norfolk and Western Railroad Property Adjacent
to 9200 Latty Avenue 4-1
4.2 Norfolk and Western Railroad Property Adjacent
to Hanley Road 4-2
4.3 Norfolk and Western Railroad Property South of SLAPS 4-3
4.4 Norfolk and Western Railroad Property Adjacent to
Coldwater Creek 4-3
4.5 Norfolk and Western Railroad Property Adjacent
to Hazelwood Avenue and South of Latty Avenue 4-4
4.6 Norfolk and Western Railroad Property Adjacent
to Hazelwood Avenue and North of Latty Avenue 4-5
4.7 Norfolk and Western Railroad Property Adjacent
to Eva Avenue 4-5
5.0 Characterization Results for the Haul Roads and
Associated Properties 5-1
5.1 Latty Avenue, McDonnell Boulevard, Hazelwood
Avenue, and Pershall Road 5-2
5.2 Property 1 5-5
5.3 Property 2 5-6
5.4 Property 3 5-6
5.5 Property 4 5-6
5.6 Property 5 5-6
5.7 Property 6 5-7
5.8 Property 7 5-7
5.9 Property 8 5-7
5.10 Property 9 5-7
5.11 Property 10 5-8
5.12 Property 11 5-8
5.13 Property 12 5-8
5.14 Property 13 5-9
vii

TABLE OF CONTENTS (continued)
Page
5.15 Property 14 5-9
5.16 Property 14A 5-10
5.17 Property 15 5-10
5.16 Property 16 5-11
5.19 Property 17 5-11
5.20 Property 18 5-11
5.21 Property 19 5-12
5.22 Property 20 5-12
5.23 Property 20A 5-12
5.24 Property 21 5-13
5.25 Property 22 5-13
5.26 Property 23 5-13
5.27 Property 24 5-13
5.28 Property 25 5-14
5.29 Property 26 5-14
5.30 Property 27 5-14
5.31 Property 28 5-15
5.32 Property 29 5-15
5.33 Property 30 5-15
5.34 Property 31 5-15
5.35 Property 31A 5-16
5.36 Property 32 5-16
5.37 Property 33 5-16
5.38 Property 34 5-17
5.39 Property 35 5-17
5.40 Property 37 5-18
5.41 Property 38 5-19
5.42 Property 39 5-21
5.43 Property 40 5-22
5.44 Property 41 5-22
5.45 Property 42 5-22
5.46 Property 43 5-22
viii

TABLE OP CONTENTS (continued)
Page
5.47 Property 44 5-23
5.48 Property 45 5-23
5.49 Property 46 5-23
5.50 Property 47 5-24
5.51 Property 48 5-24
5.52 Property 48A 5-24
5.53 Property 49 5-25
5.54 Property 50 5-25
5.55 Property 51 5-25
5.56 Property 52 5-25
5.57 Property 53 5-26
5.58 Property 54 5-26
5.59 Property 55 5-26
5.60 Property 56 5-26
5.61 Property 57 5-27
5.62 Property 58 5-27
5.63 Property 59 5-28
5.64 Property 60 5-28
5.65 Property 61 5-28
5.66 Property 62 5-28
5.67 Property 63 5-28
5.68 Property 63A 5-29
Reference for Section 5.0 5-30
6.0 Characterization Results for Coldwater Creek and
Associated Properties 6-1
6.1 Coldwater Creek 6-1
6.2 Property 1 6-3
6.3 Property 2 6-3
6.4 Property 3 6-4
6.5 Property 4 6-4
6.6 Property 5 6-5
ix

TABLE OP CONTENTS (continued)
Pace
6.7 Property 6 6-5
6.8 Property 7 6-6
6.9 Property 8 6-6
6.10 Property 9 6-7
6.11 Property 10 6-7
7.0 Characterization Results for the Vicinity Properties
Adjacent to SLAPS 7-1
7.1 Banshee Road 7-1
7.2 Ditches to the North and South of SLAPS 7-2
7.3 St. Louis Airport Authority Property 7-2
7.4 Ball Field Area 7-3

LIST OF FIGURES
Figure Title Page
1-1 Locations of FUSRAP Properties in the St. Louis, 1-2
Missouri, Area
1-2 Locations of the Latty Avenue Properties and 1-4
SLAPS
1-3 Locations of the Latty Avenue Vicinity Properties 1-6
1-4 Locations of the Haul Roads Surveyed by BNI for DOE 1-7
1-5 Locations of the Haul Roads Vicinity Properties 1-9
1-6 Locations of the SLAPS Vicinity Properties 1-12
1-7 Locations of the Coldwater Creek Vicinity Properties 1-15
2-1 Survey Grid for the Vicinity Properties
Adjacent to Latty Avenue 2-2
2-2 Survey Grid for the Haul Roads and Associated
Vicinity Properties 2-3
2-3 Survey Grid for the SLAPS Vicinity Properties 2-4
2-4 Survey Grid for Coldwater Creek 2-6
2-5 Gamma Exposure Rate Measurement Locations at the
Norfolk and Western Railroad Property Adjacent
to HISS 2-8
2-6 Gamma Exposure Rate Measurement Locations at
SLAPS and Vicinity Properties 2-9
3-1 Surface Soil Sampling Locations for Radiological
Characterization of Property 1 on Latty Avenue 3-6
3-2 Subsurface Soil Sampling Locations for Radiological
Characterization of Property 1 on Latty Avenue 3-7
3-3 Areas and Depths of Radioactive Contamination at
Property 1 on Latty Avenue 3-8
3-4 Surface Soil Sampling Locations for Radiological
Characterization of Property 2 on Latty Avenue 3-9
3-5 Subsurface Soil Sampling Locations for Radiological
Characterization of Property 2 on Latty Avenue 3-10
xi

LIST OF FIGURES (continued)
Figure Title Page
3-6 Areas and Depths of Radioactive Contamination at
Property 2 on Latty Avenue 3-11
3-7 Surface Soil Sampling Locations for Radiological
Characterization of Property 3 on Latty Avenue 3-12
3-8 Subsurface Soil Sampling Locations for Radiological
Characterization of Property 3 on Latty Avenue 3-13
3-9 Areas and Depths of Radioactive Contamination at
Property 3 on Latty Avenue 3-14
3-10 Surface Soil Sampling Locations for Radiological
Characterization of Property 4 on Latty Avenue 3-15
3-11 Subsurface Soil Sampling Locations for Radiological
Characterization of Property 4 on Latty Avenue 3-16
3-12 Areas and Depths of Radioactive Contamination at
Property 4 on Latty Avenue 3-17
3-13 Surface Soil Sampling Locations for Radiological
Characterization of Property 5 on Latty Avenue 3-16
3-14 Subsurface Soil Sampling Locations for Radiological
Characterization of Property 5 on Latty Avenue 3-19
3-15 Areas and Depths of Radioactive Contamination at
Property 5 on Latty Avenue 3-20
3-16 Surface Soil Sampling Locations for Radiological
Characterization of Property 6 on Seeger Industrial
Drive 3-21
3-17 Subsurface Soil Sampling Locations for Radiological
Characterization of Property 6 on Seeger Industrial
Drive 3-22
4-1 Surface Soil Sampling Locations for Radiological
Characterization of the Norfolk and Western Railroad
Property Adjacent to 9200 Latty Avenue 4-7
4-2 Subsurface Soil Sampling Locations for Radiological
Characterization of the Norfolk and Western Railroad
Property Adjacent to 9200 Latty Avenue 4-6
4-3 Areas and Depths of Radioactive Contamination at the
Norfolk and Western Railroad Property Adjacent to
9200 Latty Avenue 4-9
xii

LIST OP FIGURES (continued)
Figure Title Page
4-4 Surface Soil Sampling Locations for Radiological
Characterization of the Norfolk and Western
Railroad Property Adjacent to Hanley Road 4-10
4-5 Subsurface Soil Sampling Locations for Radiological
Characterization of the Norfolk and Western Railroad
Property Adjacent to Hanley Road 4-11
4-6 Surface Soil Sampling Locations for Radiological
Characterization of the Norfolk and Western Railroad
Property South of SLAPS 4-12
4-7 Subsurface Soil Sampling Locations for Radiological
Characterization of the Norfolk and Western Railroad
Property South of SLAPS 4-14
4-8 Areas and Depths of Radioactive Contamination at the
Norfolk and Western Railroad Property South of SLAPS 4-16
4-9 Surface Soil Sampling Locations for Radiological
Characterization of the Norfolk and Western Railroad
Property Adjacent to Coldwater Creek 4-18
4-10 Subsurface Soil Sampling Locations for Radiological
Characterization of the Norfolk and Western Railroad
Property Adjacent to Coldwater Creek 4-19
4-11 Soil Sampling Locations for Radiological
Characterization of the Norfolk and Western Railroad
Property Adjacent to Hazelwood Avenue and South of
Latty Avenue 4-20
4-12 Areas and Depths of Radioactive Contamination at the
Norfolk and Western Railroad Property Adjacent to
Hazelwood Avenue and South of Latty Avenue 4-21
4-13 Soil Sampling Locations for Radiological
Characterization of the Norfolk and Western Railroad
Property Adjacent to Hazelwood Avenue and North of
Latty Avenue 4-22
4-14 Soil Sampling Locations for Radiological
Characterization of the Norfolk and Western Railroad
Property Adjacent to Eva Avenue 4-23
4-15 Areas and Depths of Radioactive Contamination at
the Norfolk and Western Railroad Property Adjacent
to Eva Avenue 4-24
5-1 Surface Soil Sampling Locations for Radiological
Characterization of Latty Avenue 5-31
xiii

LIST OP FIGURES (continued)
Figure Title Page
5-2 Subsurface Soil Sampling Locations for Radiological
Characterization of Latty Avenue 5-33
5-3 Areas and Depths of Radioactive Contamination at
Latty Avenue 5-35
5-4 Composite Surface Soil Sampling Locations for
Radiological Characterization of McDonnell Boulevard 5-37
5-5 Surface Soil Sampling Locations for Radiological
Characterization of NcDonnell Boulevard 5-39
5-6 Subsurface Soil Sampling Locations for Radiological
Characterization of McDonnell Boulevard 5-41
5-7 Areas and Depths of Radioactive Contamination at
McDonnell Boulevard 5-43
5-8 Composite Surface Soil Sampling Locations for
Radiological Characterization of Hazelwood Avenue 5-45
5-9 Surface Soil Sampling Locations for Radiological
Characterization of Hazelwood Avenue 5-47
5-10 Subsurface Soil Sampling Locations for Radiological
Characterization of Hazelwood Avenue 5-49
5-11 Areas and Depths of Radioactive Contamination at
Hazelwood Avenue 5-51
5-12 Composite Surface Soil Sampling Locations for
Radiological Characterization of Pershall Road 5-53
5-13 Surface Soil Sampling Locations for Radiological
Characterization of Pershall Road 5-55
5-14 Subsurface Soil Sampling Locations for Radiological
Characterization of Pershall Road 5-58
5-15 Areas and Depths of Radioactive Contamination at
Pershall Road 5-60
5-16 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 2 5-62
5-17 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 3 5-63
xiv

LIST OP FIGURES (continued)
Figure Title Page
5-18 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 4 5-64
5-19 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 5 5-65
5-20 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 5 5-66
5-21 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 6 5-67
5-22 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 7 5-68
5-23 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 7 5-69
5-24 Soil Sampling Locations Cor Radiological
Characterization of Haul Roads Vicinity
Property 8 5-70
5-25 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 9 5-71
5-26 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 9 5-72
5-27 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 10 5-73
5-28 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 10 5-74
5-29 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 11 5-75
5-30 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 11 5-76
5-31 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 12 5-77
XV

LIST OF FIGURES (continued)
Figure Title Page
5-32 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 13 5-78
5-33 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 14 5-79
5-34 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 14 5-80
5-35 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 14A 5-81
5-36 Soil Sampling Locations for Radiological
Characterization of Haul Roads vicinity
Property 15 5-83
5-37 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 15 5-84
5-38 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 16 5-85
5-39 Areas and Depths of Radioactive Contamination at
Haul Roads Vicinity Property 16 5-86
5-40 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 17 5-87
5-41 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 19 5-88
5-42 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 19 5-89
5-43 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 20 5-90
5-44 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 20 5-91
5-45 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 20A 5-92
xv i

LIST OF FIGURES (continued)
Figure Title Page
5-46 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 21 5-93
5-47 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 21 5-94
5-48 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 22 5-95
5-49 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 22 5-96
5-50 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 23 5-97
5-51 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 23 5-98
5-52 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 24 5-99
5-53 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 24 5-100
5-54 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 25 5-101
5-55 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 26 5-102
5-56 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 26 5-103
5-57 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 27 5-104
5-58 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 27 5-105
5-59 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 28 5-106
xvii

LIST OF FIGURES (continued)
Figure Title Page
5-60 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 29 5-107
5-61 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 30 5-108
5-62 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 30 5-109
5-63 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 31 5-110
5-64 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 31A 5-111
5-65 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 32 5-112
5-66 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 32 5-113
5-67 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 33 5-114
5-68 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 33 5-115
5-69 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 34 5-116
5-70 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 34 5-117
5-71 Surface Soil Sampling Locations for 1988
Radiological Characterization of Haul Roads
Vicinity Property 35 5-118
5-72 Subsurface Soil Sampling Locations for 1988
Radiological Characterization of Haul Roads
Vicinity Property 35 5-119
5-73 Soil Sampling Locations for 1989 Radiological
Characterization of Haul Roads Vicinity
Property 35 5-120
xviii

LIST OF FIGURES (continued)
Figure Title Page
5-74 Areas and Depths of Radioactive Contamination
at Haul Roads Vicinity Property 35 5-121
5-75 Surface Soil Sampling Locations for 1987
Radiological Characterization of Haul Roads
Vicinity Property 37 5-122
5-76 Subsurface Soil Sampling Locations for 1987
Radiological Characterization of Haul Roads
Vicinity Property 37 5-123
5-77 Soil Sampling Locations for 1989 Radiological
Characterization of Haul Roads Vicinity
Property 37 5-124
5-78 Areas and Depths of Radioactive Contamination at
Haul Roads Vicinity Property 37 5-125
5-79 Surface Soil Sampling Locations for 1987
Radiological Characterization of Haul Roads
Vicinity Property 38 5-126
5-80 Subsurface Soil Sampling Locations for 1987
Radiological Characterization of Haul Roads
Vicinity Property 38 5-127
5-81 Soil Sampling Locations for 1989 Radiological
Characterization of Haul Roads Vicinity
Property 38 5-128
5-82 Areas and Depths of Radioactive Contamination at
Haul Roads Vicinity Property 38 5-129
5-83 Surface Soil Sampling Locations for 1987
Radiological Characterization of Haul Roads
Vicinity Property 39 5-130
5-84 Subsurface Soil Sampling Locations for 1987
Radiological Characterization of Haul Roads
Vicinity Property 39 5-131
5-85 Soil Sampling Locations for 1989 Radiological
Characterization of Haul Roads Vicinity
Property 39 5-132
5-86 Areas and Depths of Radioactive Contamination at
Haul Roads Vicinity Property 39 5-133
5-87 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 40 5-134
xir

LIST OP FIGURES (continued)
Figure Title Page
5-86 Areas and Depths of Radioactive Contamination at
Haul Roads Vicinity Property 40 5-135
5-89 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 41 5-136
5-90 Areas and Depths of Radioactive Contamination at
Haul Roads Vicinity Property 41 5-137
5-91 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 42 5-138
5-92 Areas and Depths of Radioactive Contamination at
Haul Roads Vicinity Property 42 5-139
5-93 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 43 5-140
5-94 Areas and Depths of Radioactive Contamination at
Haul Roads Vicinity Property 43 5-141
5-95 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 44 5-142
5-96 Areas and Depths of Radioactive Contamination at
Haul Roads Vicinity Property 44 5-143
5-97 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 45 5-144
5-98 Areas and Depths of Radioactive Contamination at
Haul Roads Vicinity Property 45 5-145
5-99 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 46 5-146
5-100 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 47 5-147
5-101 Areas and Depths of Radioactive Contamination at
Haul Roads Vicinity Property 47 5-148
xx

LIST OF FIGURES (continued)
Figure Title Page
5-102 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 48 5-149
5-103 Areas and Depths of Radioactive Contamination at
Haul Roads Vicinity Property 48 5-150
5-104 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 48A 5-151
5-105 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 49 5-152
5-106 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 50 5-153
5-107 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 51 5-154
5-108 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 52 5-155
5-109 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 53 5-156
5-110 Areas and Depths of Radioactive Contamination at
Haul Roads Vicinity Property 53 5-157
5-111 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 54 5-158
5-112 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 55 5-159
5-113 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 56 5-160
5-114 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 57 5-161
xxi

LIST OP FIGURES (continued)
Figure Title Page
5-115 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 58 5-162
5-116 Areas and Depths of Radioactive Contamination at
Haul Roads Vicinity Property 58 5-163
5-117 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 59 5-164
5-118 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 60 5-165
5-119 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 61 5-166
5-120 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 62 5-167
5-121 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 63 5-168
5-122 Soil Sampling Locations for Radiological
Characterization of Haul Roads Vicinity
Property 63A 5-169
6-1 Surface Sediment Sampling Locations for 1986
Radiological Characterization of Coldwater Creek 6-9
6-2 Soil Sampling Locations for 1987
Radiological Characterization of Coldwater Creek 6-11
6-3 Soil Sampling Locations for Radiological
Characterization of 1.5 Miles of Coldwater Creek
North of Pershall Road 6-13
6-4 Soil Sampling Locations for Radiological
Characterization of Property 1 on Coldwater Creek 6-15
6-5 Soil Sampling Locations for Radiological
Characterization of Property 2 on Coldwater Creek 6-16
6-6 Areas and Depths of Radioactive Contamination at
Property 2 on Coldwater Creek 6-17
xxii

LIST OP FIGURES (continued)
Figure Title Page
6-7 Soil Sampling Locations for Radiological
Characterization of Property 3 on Coldwater Creek 6-18
6-8 Soil Sampling Locations for Radiological
Characterization of Property 4 on Coldwater Creek 6-19
6-9 Soil Sampling Location for Radiological
Characterization of Property 5 on Coldwater Creek 6-20
6-10 Soil Sampling Locations for Radiological
Characterization of Property 6 on Coldwater Creek 6-21
6-11 Soil Sampling Locations for Radiological
Characterization of Property 7 on Coldwater Creek 6-22
6-12 Soil Sampling Locations for Radiological
Characterization of Property 8 on Coldwater Creek 6-23
6-13 Soil Sampling Location for Radiological
Characterization of Property 9 on Coldwater Creek 6-24
6-14 Soil Sampling Location for Radiological
Characterization of Property 10 on Coldwater Creek 6-25
7-1 Surface Soil Sampling Locations for Radiological
Characterization of Banshee Road 7-6
7-2 Subsurface Soil Sampling Locations for Radiological
Characterization of Banshee Road 7-8
7-3 Areas and Depths of Radioactive Contamination at
Banshee Road 7-10
7-4 Surface Soil Sampling Locations for Radiological
Characterization of the Ditches to the North and
South of SLAPS 7-12
7-5 Subsurface Soil Sampling Locations for
Radiological Characterization of the Ditches to
the North and South of SLAPS 7-14
7-6 Areas and Depths of Radioactive Contamination at
the Ditches to the North and South of SLAPS 7-16
7-7 Surface Soil Sampling Locations for
Radiological Characterization of the St. Louis
Airport Authority Property 7-18
7-8 Subsurface Soil Sampling Locations for
Radiological Characterization of the St. Louis
Airport Authority Property 7-20
xxiii

7-9 Areas and Depths of Radioactive Contamination at
the St. Louis Airport Authority Property 7-22
7-10 Surface Soil Sampling Locations for Radiological
Characterization of the Ball Field Area 7-24
7-11 Subsurface Soil Sampling Locations for Radiological
Characterization of the Ball Field Area 7-25
7-12 Areas and Depths of Radioactive Contamination at
the Ball Field Area 7-26
xxiv

LIST OF TABLES
Table Title Page
1-1 Tax Map Reference List for Latty Avenue Vicinity
Properties 1-5
1-2 Tax Map Reference List Cor Haul Roads Vicinity
Properties 1-10
1-3 Tax Map Reference List for Coldwater Creek Vicinity
Properties 1-14
2-1 Summary of Residual Contamination Guidelines for
PUSRAP Properties in the St. Louis, Missouri, Area 2-13
2-2 Background Radionuclide Concentrations in Soil and
Radiation Levels in the St. Louis Area 2-15
NOTE: TABLES 3-1 THROUGH 5-7 ARE CONTAINED IN
VOLUME II OF THIS REPORT. TABLES 5-8
THROUGH 7-8 ARE CONTAINED IN VOLUME III.
XXV

ACRONYMS
AEC
BNI
CERCLA
DOE
FUSRAP
HISS
MED
NRC
NEPA
ORAU
ORNL
PIC
PMC
SLAPS
SLDS
TMA/E
TMC
TSCL
Atomic Energy Commission
Bechtel National, Inc.
Comprehensive Environmental
Response, Compensation, and
Liability Act
U.S. Department of Energy
Formerly Utilized Sites Remedial
Action Program
Hazelvood Interim Storage Site
Manhattan Engineer District
Nuclear Regulatory Commission
National Environmental Policy Act
Oak Ridge Associated Universities
Oak Ridge National Laboratory
pressurized ionization chamber
project management contractor
St. Louis Airport Site
St. Louis Downtown Site
Thermo Analytical/Eberline
Technical Measurements Center
temporary slope and construction
line
xxvi

ABBREVIATIONS
cm
cm
cpm
ft
hh
a
in.
km
m
m2
m
mi
mrera
mrem/yr
mR/h
vR/h
pCi/g
yd3
centimeter
square centimeter
counts per minute
foot
hour
hectares
inch
kilometer
meter
square meter
cubic meter
mile
mill!rem
millirem per year
milliroentgens per hour
microroentgens per hour
picocuries per gram
cubic yard
year
xxvii

1.0 INTRODUCTION
The characterization activities reported in this document were
conducted as part of the Formerly Utilized Sites Remedial Action
Program (PUSRAP). a U.S. Department of Energy (DOE) effort to
identify and clean up or otherwise control sites where residual
radioactive contamination (exceeding current guidelines) remains
from the early years of the nation’s atomic energy program or from
commercial operations causing conditions that Congress has mandated
DOE to remedy. Bechtel National, Inc. (BNI) acts as the project
management contractor (PMC), responsible to DOE for planning,
managing, and implementing PUSRAP. Surveys were conducted from 1986
through 1969 at DOE’s direction by BNI and its radiological
subcontractor, Thermo Analytical/Eberline (TMA/E).
1.1 PURPOSE AND OBJECTIVES
This report describes the procedures used to conduct the 1986
through 1989 radiological characterization of FUSRAP properties in
the St. Louis, Missouri, area (see Figure 1-1). These properties
include
o Latty Avenue vicinity properties
o Portions of Coldwater Creek and its vicinity properties
o Norfolk and Western Railroad properties
o St. Louis Airport Site (SLAPS) vicinity properties
o Portions of Latty Avenue, McDonnell Boulevard, Hazelwood
Avenue, and Pershall Road (the haul roads) and associated
vicinity properties
The St. Louis sites have been placed on the National Priorities
List, which is a list of sites identified for remediation under the
Comprehensive Environmental Response. Compensation, and Liability
Act (CERCLA) of 1980, also referred to as Superfund.
1-1

LATTY AVENUE
PROPERTIES
NORFOLK A WESTERN RR,
SLAPS, HAUL ROADS,
AND VICINITY PROPERTIES
NOT TO SCALE
COLOWATER CREEK
A ASSOC. PROPERTIES
ORKMNOF
COLOWATER
CREEK
8T. LOWS
DOWNTOWN SITE
FIGURE 1-1 LOCATIONS OF FUSRAP PROPERTIES IN THE ST. LOUIS, MISSOURI, AREA

The objective of these characterization activities is to define the
horizontal and vertical boundaries of radioactive contamination
exceeding DOE guidelines. The data collected from the radiological
surveys discussed in this report will be incorporated into the
remedial investigation and feasibility study reports for the St.
Louis sites.
1.2 LOCATION AND DESCRIPTION
SLAPS is an 8.8-ha (21.7-acre) tract located in St. Louis County,
Missouri, approximately 24 km (15 mi) from downtown St. Louis and
immediately north of the Lambert-St. Louis International Airport.
SLAPS is bounded by the Norfolk and Western Railroad and Banshee
Road on the south, Coldwater Creek on the west, and McDonnell
Boulevard and adjacent recreational fields on the north and east.
Figure 1-2 shows the location of SLAPS and the Latty Avenue
properties. The Latty Avenue properties [Hazelwood Interim Storage
Site (HISS) on the eastern half and the Futura Coatings property on
the western half] are located at 9200 Latty Avenue. These
properties cover a 4.5-ha (11-acre) tract located in the city limits
of Hazelwood and are approximately 3.2 km (2 mi) northeast of the
control tower of the Lambert-St. Louis International Airport.
Each Latty Avenue vicinity property characterized as part of the
radiological survey was assigned a numerical identifier that
corresponds to a St. Louis County tax map locator number. Table 1-1
references the assigned identifier to its respective tax map locator
number. The Latty Avenue vicinity properties lie within the cities
of Hazelwood and Berkeley and are shown in Figure 1-3.
The haul roads, believed to have been used during waste transfer
among the St. Louis properties, include Latty Avenue, McDonnell
Boulevard, Hazelwood Avenue, Pershall Road, Eva Avenue, and Frost
Avenue. Characterization results from the right-of-way of these
roads are reported with those of the appropriate associated vicinity
properties. These routes traverse Hazelwood, Berkeley, and St.
Louis and are located near HISS and SLAPS as shown in Figure 1-4.
1-3

FUSRAP SITES
TO DOWNTOWN *”
ST. LOWS
NOT TO SCALE
FIGURE 1-2 LOCATIONS OF THE LATTY AVENUE PROPERTIES AND SLAPS

TABLE 1-1
TAX NAP REFERENCE LIST FOR
LATTY AVENUE VICINITY PROPERTIES
Reference Number Tax Map Locator Number
Property 1 10K530098
Property 2 10K510012
Property 3 10KS20022
Property 4 10K520044
Property 5 10KS20033
Property 6 10K510067
1-5

/_.-,
I PfWfRTT (
CU BUILDING
————— PROPERTY BOUNOIRY
i| § «| wl M/ 1^1
• HO
• MO
S34HMSII.OGN
FIGURE 1-3 LOCATIONS OF THE LATTY AVENUE VICINITY PROPERTIES

I
•J
IPEHSHAIL ROAD
• • • • HAUL ROADS
tATTYAVfMir *
MO MOO IMO LATTY AVENUE
PROPERTIES
BALL FIELD
AREA
NORFOLK * WESTERN Rfl
BANSHEE HUAU
LAMBERT ST. LOUIS AIRPORT
I
FIGURE 1-4 LOCATIONS OF THE HAUL ROADS SURVEYED BY BNI FOR DOE

In addition to these haul roads, several adjacent properties were
included as part of the radiological characterization (see
Figure 1-5). Each haul road vicinity property characterized as part
of the radiological survey was assigned a numerical identifier that
corresponds to a St. Louis County tax map locator number. Table 1-2
references the assigned identifier to its respective tax map locator
number.
SLAPS was acquired by the Atomic Energy Commission (AEC) in 1947.
From that time until approximately 1966, the site was used to store
waste materials from the uranium feed materials plant at the St.
Louis Downtown Site (SLDS). Radioactive contamination of the SLAPS
vicinity properties may be the result of movement of contaminated
soils from SLAPS via surface runoff or transfer by vehicles. In
1973, ownership of SLAPS was transferred by quitclaim deed from AEC
to the City of St. Louis. The 1985 Energy and Water Development
Appropriations Act (Public Law 98-360) authorized DOE to reacquire
the property from the city for use as a permanent disposal site.
Actions to transfer ownership of the property to DOE have been
initiated.
The SLAPS vicinity properties include Banshee Road, the area south
of Banshee Road owned by the St. Louis Airport Authority, the
recreational areas to the north of SLAPS known as the ball field
area, and the ditches to the north and south of SLAPS. Figure 1-6
shows the locations of the SLAPS vicinity properties.
Coldwater Creek, a tributary of the Missouri River, has an overall
length of 30.6 km (19 mi). The creek, which originates about 5.8 km
(3.6 mi) south of SLAPS at a small spring-fed lake, flows for a
distance of 152 m (500 ft) along the west side of SLAPS and
discharges into the Missouri River about 22.5 km (14 mi) northeast
of the site. Beneath the airport, Coldwater Creek flows in an
underground drainage passage. The location of Coldwater Creek is
shown in Figure 1-1.
1-8

I
vo
FIGURE 1-5 LOCATIONS OF THE HAUL ROADS VICINITY PROPERTIES

TABLE 1-2
TAX MAP REFERENCE LIST FOR
HAUL ROADS VICINITY PROPERTIES
Page 1 of 2
Reference Number Tax Map Locator Number
Property 1
Property 2
Property 3
Property 4
Property 5
Property 6
Property 7
Property 8
Property 9
Property 10
Property 11
Property 12
Property 13
Property 14
Property 14A
Property 15
Property 16
Property 17
Property 18
Property 19
Property 20
Property 20A
Property 21
Property 22
Property 23
Property 24
Property 25
Property 26
Property 27
Property 28
Property 29
Property 30
Property 31
Property 31A
Property 32
Property 33
Property 34
Property 35
10L220893
10L240093
10L520098
10L240082
10L330095
10L330040
10L330031
10L330022
10L330073
10L340023
10L340014
10L340032
10L310011
11K510035
State of Missouri
McDonnell Boulevard
Right-of-Way
11K520056
10K210064
10K210053
10K230051
10K230031
10K230040
10K230031
10K230073
10K240106
10K240094
10K330140
10K220151
10K220140
10K330030
10K330063
10K330074
10K330085
10K310111
10K330131
10K330173
10K330113
10K330122
10K610080
1-10

TABLE 1-2
(continued)
Page 2 of 2
Reference Number Tax Map Locator Number
Property 37
Property 38
Property 39
Property 40
Property 41
Property 42
Property 43
Property 44
Property 45
Property 46
Property 47
Property 48
Property 48A
Property 49
Property 50
Property 51
Property 52
Property 53
Property 54
Property 55
Property 56
Property 57
Property 58
Property 59
Property 60
Property 61
Property 62
Property 63
Property 63A
10K520066
10K540097
10K630303
09K220140
10K540031
09K220041
10K540075
09K220030
09K220052
09K220074
09K220085
09K220184
09K220173
09K310153
09K310164
09K310175
09K322187
09K220162
09K220106
09K210053
09K210064
09K140026
09K140015
09K110304
09K130027
09K130016
09K130038
10K430020
State of Missouri
Pershall Road
Right-of-Way
1-11

8
SLAPS VICINITY
PROPERTIES
FENCE
N TWO
N 2«00
N 7700
M 2000
N WOO
_N KOO
N 1400
N 1700
N KXK)
N 800
FIGURE 1-6 LOCATIONS OF THE SLAPS VICINITY PROPERTIES

TABLE 1-3
TAX NAP REFERENCE LIST FOR
COLDWATER CREEK VICINITY PROPERTIES
Reference Number Tax Map Locator Number
Property 1
Property 2
Property 3
Property 4
Property 5
Property 6
Property 7
Property 8
Property 9
Property 10
09K120095
09K120149
09K120040
09K120127
09K120116
10K440030
10K440096
10K440074
10K420010
10K140024
1-13

Each vicinity property associated with Coldwater Creek was assigned
a numerical identifier that corresponds to a St. Louis County tax
map locator number. Table 1-3 references the assigned identifier to
its respective tax map locator number. Figure 1-7 shows the
vicinity properties associated with Coldwater Creek.
1.3 HISTORY AND PREVIOUS RADIOLOGICAL SURVEYS
In 1966, ore residues and uranium- and radium-bearing process wastes
stored at SLAPS were purchased by the Continental Mining and Milling
Company of Chicago, Illinois, and placed in storage at 9200 Latty
Avenue. These wastes were generated by a St. Louis plant (currently
owned by Mallinckrodt, Inc.) between 1942 and the late 1950s under
contracts with AEC and its predecessor, the Manhattan Engineer
District (MED). Some of the residues were dried in two buildings on
site before being shipped to a Colorado mill. The rest were removed
from 9200 Latty Avenue (currently HISS) in 1973, to terminate a
Nuclear Regulatory Commission (NRC) license for storage, and the
property was later sold to the current owner. At this time, barium
sulfate residues were reportedly diluted with site soil and
transported to West Lake Landfill in St. Louis County.
The residues stored at 9200 Latty Avenue were deposited directly on
the ground. When the last residues were removed from the ground
surface, a reported 30- to 46-cm (12- to 16-in.) layer of topsoil
also was removed before the property was sold. It appears that
parts of the property are contaminated in excess of current
guidelines as a result of mechanical earth-moving activities and
water percolation (Refs. 1-1 and 1-2). The primary contaminant is
thorium-230. Much of the uranium and radium in the ore had been
removed during earlier processing. It is possible that McDonnell
Boulevard was the haul road used for the transport of barium sulfate
residues. Pershall Road and Hazelwood Avenue also were possible
haul roads during the transport of residues among the St. Louis
sites. The soils along the shoulders of Latty Avenue also were
surveyed and found to be contaminated, possibly as a result of
residues spilling from the transport trucks.
1-14

I
»-•
Cn
COLDWATER CREEK
VICINITY PROPERTY
BANSHEE ROAD ‘
FIGURE 1 -7 LOCATIONS OF THE COLDWATER CREEK VICINITY PROPERTIES

1.3.1 Lattv Avenue Vicinity Properties
In 1981, OaK Ridge Associated Universities (ORAU) performed a
radiological survey of the northern and eastern boundaries of HISS
for NRC (Refs. 1-3 and 1-4). Levels of contamination, principally
thorium-230, similar to those levels on the site were found in both
areas.
In September 1983, DOE directed Oak Ridge National Laboratory (ORNL)
to perform a preliminary survey of properties adjacent to and in the
vicinity of HISS at 9200 Latty Avenue to determine if radioactive
contamination in excess of guidelines was present. The potentially
contaminated areas identified during that preliminary evaluation
were then more thoroughly surveyed by ORNL during January and
February 1984. Results of the survey established that radioactive
contamination was present over most of the HISS vicinity properties,
extending north and south in some areas onto adjacent private
properties along Latty Avenue (Refs. 1-5 and 1-6). ORNL discovered
that redistribution of the contamination had occurred, probably as a
result of flooding, surface runoff, and road and utility line
activities. The major contaminant found was thorium-230; radium-226
and uranium-238 were present in lesser amounts.
Based on the ORNL characterization, DOE directed BNI to perform
remedial action in 1984 on the contaminated areas within the
temporary slope and construction line (TSCL) along Latty Avenue
(Ref. 1-7). The TSCL included all areas that could have been
disturbed during a drainage improvement project being carried out by
the cities of Hazelwood and Berkeley. During the remedial action,
contamination exceeding guidelines was found to extend beyond the
TSCL.
In 1986, DOE directed BNI to provide radiological support to the
cities during their road improvement project. During this coverage,
radium-226 and thorium-230 contamination in excess of DOE remedial
action guidelines was found at depths ranging from 0.6 to 2.4 m (2
to 8 ft) along and under Latty Avenue. Based on gamma count rates,
1-16

materials contaminated in excess of remedial action guidelines were
removed and placed in storage at HISS. Approximately 4,206 m
(4,600 yd ) of material was placed in a storage pile developed
specifically to accommodate these materials and covered with a
low-permeability membrane. In addition to gamma scanning the soil
that was not placed in storage at HISS, gross alpha counting was
used as a screening technique. Using gross alpha counting, soil
samples were scanned Cor alpha-emitting radionuclides, such as
thorium-230, in excess of DOE remedial action guidelines. Soils
that did not exhibit contamination in excess of DOE remedial action
guidelines were used as fill material on the railroad property
located between the Putura Coatings site and Coldwater Creek and
along the entire length of Latty Avenue.
Radiological characterization of the Latty Avenue vicinity
properties was necessary to define the locations and boundaries of
the contamination identified in the ORNL survey and to evaluate
disposal alternatives.
1.3.2 Coldwater Creek and Vicinity Properties
In 1982, DOE directed BNI to perform a radiological characterization
of the ditches to the north of SLAPS and portions of Coldwater Creek
(Ref. 1-8). Results of this survey indicated that gamma-emitting
contamination exceeding remedial action guidelines was present.
This survey did not include measuring thorium-230 concentrations in
soils. Subsequent analysis of additional radionuclides showed the
presence of thorium-230 in above-guideline concentrations;
therefore, all later field work conducted in the St. Louis area
involved analyzing for thorium-230. Characterization efforts
continued in 1986 at the SLAPS ditches and involved analyzing
archived soil samples from the 1982 survey for thorium-230. The
results of these analyses indicated the need to collect soil samples
beyond the area surveyed in 1982 (on the ball field) to adequately
determine the extent of contamination. Results for the ball field
characterization are reported in Section 7.0 of this report.
1-17

Additionally, sediment samples were collected in 1986 from the sides
and center of Coldwater Creek beginning at SLAPS and continuing
downstream to HISS. The data from these samples indicated spotty
contamination along the entire distance.
1.3.3 Norfolk and Western Railroad Properties
and SLAPS Vicinity Properties
A radiological and limited chemical characterization was conducted
at SLAPS in 1966 by BNI. Results of this survey showed
contamination present on SLAPS extending to depths as great as 5.5 m
(18 ft) (Ref 1-9). The Norfolk and Western Railroad property forms
the southern boundary of SLAPS. The radiological characterization
of the SLAPS vicinity properties, Banshee Road, and the railroad
property was necessary to define the magnitude and boundaries of the
contamination and evaluate disposal alternatives. No formal
radiological characterization had been performed on these properties
until that of 1986-1989.
1.3.4 Haul Roads
In 1985, DOE directed ORNL to perform a radiological survey of the
roads thought to have been used to transport contaminated material
to and from SLAPS and HISS (Ref. 1-10). Results of the ORNL gamma
radiation walkover scan of the roadsides showed areas where gamma
exposure rates are in excess of background radiation levels. Gamma
exposure rates up to 90 yR/h were found on the surface of McDonnell
Boulevard. Soil sample analysis results from the 1985 survey showed
thorium-230 to be the major contaminant. As a result of this
survey, parts of Hazelwood Avenue, Pershall Road, and McDonnell
Boulevard were designated for remedial action in 1986.
1-18

REFERENCES FOR SECTION 1.0
1-1 Bechtel National, Inc. Characterization Report Cor the
Hazelwood Interim Storage Site. Hazelwood, Missouri,
DOE/OR/20722-141. Oak Ridge, Tenn., June 1987.
1-2 Bechtel National, Inc. Radiological Characterization Report
for the Futura Coatings Site. Hazelwood, Missouri,
DOE/OR/20722-158. Oak Ridge. Tenn.. July 1987.
1-3 Oak Ridge Associated Universities. Preliminary Radiological
Survey of Proposed Street Riqht-of-Way at Futura Coatings,
Inc., 9200 Latty Avenue. Hazelwood, Missouri, Oak Ridge, Tenn.,
December 1981.
1-4 Oak Ridge Associated Universities. Concentrations of
Radionuclides in Soil Samples from Property at 9150 Latty
Avenue, Hazelvood, Missouri. Oak Ridge, Tenn., April 28, 1982.
1-5 Oak Ridge National Laboratory. Radiological Survey of Latty
Avenue in the Vicinity of the Former Cotter Site, Hazelwood/
Berkeley. Missouri (LM001). ORNL/TM-10006, Oak Ridge, Tenn.,
May 1987.
1-6 Oak Ridge National Laboratory. Radiological Survey of
Properties in the Vicinity of the Former Cotter Site,
Hazelwood/Berkelev. Missouri (LM003). ORNL/TM-10008, Oak Ridge,
Tenn., May 1987.
1-7 Bechtel National. Inc. Post-Remedial Action Report for the
Hazelwood Site – 1984. DOE/OR/20722-76. Oak Ridge, Tenn.,
September 1985.
1-8 Bechtel National, Inc. Radiological Survey of the Ditches at
the St. Louis Airport Site (SLAPS). Oak Ridge, Tenn., August
1983.
1-19

1-9 Bechtel National, Inc. Radiological and Limited Chemical
Characterization Report for the St. Louis Airport Site,
St. Louis, Missouri. DOE/OR/20722-163, Oak Ridge, Tenn.,
August 1987.
1-10 Oak Ridge National Laboratory. Results of the Radiation
Measurements Taken at Transportation Routes (LM004) in
Hazelvood. Missouri. ORNL/RASA-86/31, Oak Ridge, Tenn.,
December 1986.
1-20

2.0 STUDY AREA INVESTIGATION
The radiological characterization surveys conducted at the FUSRAP
properties in St. Louis consisted of the following steps:
establishing a reproducible grid system, clearing the area to be
surveyed as appropriate, performing gamma radiation walkover scans
and near-surface gamma radiation measurements where applicable, and
collecting and analyzing surface and subsurface soil samples. The
types of radiological measurements taken and the methods used are
described in Subsections 2.2 and 2.3.
2.1 GRID SYSTEM
A civil surveyor established a 15-m (50-ft) grid on the vicinity
properties adjacent to Latty Avenue by marking the intersections of
a series of perpendicular lines, as shown in Figure 2-1.
[Figure 2-1 is marked at 61-m (200-ft) intervals because of the size
of the drawing.] The grid origin used during the remedial action
conducted in 1984 along the Latty Avenue right-of-way was
reestablished.
A 15-m (50-ft) grid was also established over the haul roads and
adjacent properties, extending approximately 46-m (150 ft) from the
roadways (see Figure 2-2). [Figure 2-2 is marked at 305-m
(1,000-ft) intervals because of the size of the drawing.] A 15-m
(50-ft) grid was established over the SLAPS vicinity properties as
shown in Figure 2-3. [Figure 2-3 is marked at 61-m (200-ft)
intervals because of the size of the drawing.] The grid origin was
the southwest corner of SLAPS. These grids were tied to the SLAPS
grid system and to the Missouri state grid system with sufficient
detail to allow for reestablishment at a later date. When
characterization work was initially performed at 9200 Latty Avenue
and SLAPS, each site was treated independently and a grid was
established at each. At that time, it was not suspected that
contamination would be as extensive as it is in the area and that
the two sites would be essentially continuous. This accounts for
having different grid systems for the two sites.
2-1

I N)
II tfOO
L_] BUILDING
————— PROPERTY BOUNDARY
FIGURE 2-1 SURVEY GRID FOR THE VICINITY PROPERTIES ADJACENT TO LATTY AVENUE
S3«««SII.OCN

10I
(A)
FIGURE 2-2 SURVEY GRID FOR THE HAUL ROADS AND
ASSOCIATED VICINITY PROPERTIES

H ?600
I
•tfc
FIGURE 2-3 SURVEY GRID FOR THE SLAPS VICINITY PROPERTIES

Minimal clearing was done along Coldwater Creek BO that a traverse
line could be established with right angle offsets at 152-m (500-ft)
intervals (Figure 2-4). The traverse line was referenced back to
the SLAPS grid. Sampling locations were determined by measuring
along the offset lines. All characterization data correspond to
coordinates on the grids. All grids shown in the figures in this
document are displayed in measurement units of feet.
2.2 RADIOLOGICAL SURVEYS
The characterization survey consisted of two major components:
surface surveys and subsurface investigations. Surface surveys were
performed first to provide information about the patterns of
contamination and to assist in the identification of areas in which
subsurface contamination could be present. The subsurface
investigations were performed subsequently to establish the depths
of contamination in areas that the surface surveys identified as
being contaminated. An additional purpose of the subsurface
investigations was to locate any subsurface contamination that
lacked surface manifestation.
2.2.1 Methods
Two types of surface survey methods were used: walkover surveys and
near-surface gamma radiation surveys. Initial gamma radiation
walkover scans were performed within grid blocks on the vicinity
properties adjacent to Latty Avenue and SLAPS using an unshielded
gamma scintillation detector. A gamma radiation walkover scan was
done on accessible areas of Coldwater Creek’s banks and any
associated properties. Areas in which readings exceeded twice the
gamma radiation background level were marked on a site drawing.
This type of survey covers virtually all the ground surface and has
the advantage that it can be conducted quickly; however, the
boundaries of the areas identified as being contaminated may not be
precisely correct because of the effect of nearby contamination on
detector readings.
2-5

roi
————— PROPERTY BOUNDARY
FIGURE 2-4 SURVEY GRID FOR COLDWATER CREEK
ii«n?o.ocx

Near-surface gamma radiation measurements were made 30 cm (12 in.)
above the ground surface at 3.8-m (12.5-ft) intervals in the areas
identified as contaminated on the basis of the gamma radiation
walkover scan. This survey was performed to define more clearly the
boundaries of contamination identified by the earlier walkover
survey. The same kind of detector that was used during the walkover
survey, a 5-cm by 5-cm (2-in. by 2-in.) sodium-iodide,
thallium-activated [Nal(Tl)] detector, was used during this survey.
The detector was mounted in a probe assembly surrounded with a
conical lead shield to reduce the gamma intensity through the sides,
thus producing a downward directional response. The detector was
calibrated at the Technical Measurements Center (TMC) in Grand
Junction, Colorado.
It should be pointed out that neither the walkover nor the
near-surface gamma radiation survey is effective for detecting the
presence of thorium-230. Thorium-230 is an alpha-emitting
radionuclide that cannot be detected in situ.
Gamma exposure rates at 1 m (3 ft) above the ground were measured on
the Norfolk and Western Railroad property adjacent to HISS and on
the SLAPS vicinity properties to the north and south of SLAPS using
a pressurized ionization chamber (PIC). The PIC has a response to
gamma radiation that is proportional to exposure in roentgens.
Readings were made at 37 selected grid points on the Norfolk and
Western Railroad property adjacent to HISS (see Figure 2-5) and at
69 locations at SLAPS and vicinity properties (see Figure 2-6).
This exposure rate information will be valuable for use in remedial
action planning, environmental monitoring, and the preparation of
documentation required by CERCLA/National Environmental Policy Act
(NEPA) activities.
Subsurface investigations were conducted by drilling and/or handaugering
holes at most 30.5-m (100-ft) grid intersections. The
depth to which each borehole was drilled was based on guidance from
2-7

N 2200
N 2000
BUILDING
RARROAD
FENCE
FIGURE 2-5 GAMMA EXPOSURE RATE MEASUREMENT LOCATIONS
AT THE NORFOLK AND WESTERN RAILROAD PROPERTY
ADJACENT TO HISS
«RBi«2JflO4M52aDOI JO. 2-8

NIJ
vo
N 2200
FIGURE 2-6 GAMMA EXPOSURE RATE MEASUREMENT LOCATIONS
AT SLAPS AND VICINITY PROPERTIES
It t«,l«l SMWSn.OCN JO.

the geologist on site and the radiological support representative.
The hand-augered holes were typically 1 to 1.3 m (3 to 4 ft) deep.
Although gamma logging is typically used to determine the depth of
subsurface contamination, thorium-230 (the principal contaminant)
cannot be detected in situ; therefore, continuous soil samples were
collected from the v surface to the bottom of the hole by driving a
split spoon sampler in advance of the auger. Deviations from this
methodology required by field conditions are described in each
section of this report.
Downhole gamma logging was performed in each characterization hole
to indicate the general depth of contamination from gamma-emitting
radionuclides. Gamma logging was accomplished by lowering an
unshielded Nal(Tl) detector into the hole and recording the count
rate as a function of depth. Downhole gamma logging data were used
for the selection and analysis of soil samples to determine the
concentrations of uranium, radium, and thorium.
2.2.2 Sample Collection and Analysis
Biased surface soil samples [0 to IS cm (0 to 6 in.)] were collected
based on results from the gamma radiation walkover scans. Each
sample was counted for 10 minutes using an intrinsic germanium
detector housed in a lead counting cave lined with cadmium and
copper. The pulse height distribution was sorted using a
computer-based multichannel analyzer. Radionuclide concentrations
were determined by comparing the gamma spectrum of each sample with
the spectrum of a certified counting standard for the radionuclide
of interest.
Subsurface soil samples were collected from the borehole and hand
augered hole locations. Wherever possible, continuous sampling was
performed from the surface to in-situ (not previously disturbed)
soil, as identified by the field geologist.
2-10

Following sample collection, the downhole gamma logs were reviewed,
and samples were selected for analysis of uranium-238, radium-226,
and thorium-232 concentrations. Samples were typically chosen for
analysis at 0.3-m (1-ft) intervals. These analyses were performed
using the gamma spectroscopy system described previously.
At the same time that samples were selected for the analysis program
described above, samples were also identified for thorium-230
analysis. The primary goal of the thorium-230 analysis program was
to determine whether above-guideline concentrations of thorium-230
exist in areas where neither uranium-238, radium-226, nor
thorium-232 is present in concentrations exceeding guidelines.
Experience in the St. Louis area has shown that when the radium-226
concentration is elevated above background levels, it is reasonable
to assume that the concentration of thorium-230 exceeds the DOE
guideline of 15 pCi/g. Based on this rationale, as well as on the
downhole gamma logs and available gamma spectroscopy results,
samples were selected for thorium-230 analysis. Typically, this
meant that samples were selected from regions of each borehole where
gamma logging results showed a decrease in the count rate,
indicating a drop in the radium-226 concentration.
To expedite the sampling and analysis process, multiple-depth
samples were selected from each borehole for initial analysis.
Selection of these samples was based on an evaluation of gamma
logs. By using this selection method, the boundaries of
contamination could be established in a single phase of analysis.
As analytical data became available, other samples also were
selected to resolve inconsistencies or to provide additional
information on specific regions. It should be noted that the
sampling locations depicted in figures in this document represent
locations from which soil samples were analyzed. In some instances,
soil samples may have been collected from a property but analysis
was not necessary.
2-11

2.3 CHARACTERIZATION RESULTS
The results of the characterization effort for each group of FUSRAP
properties in the St. Louis area are described in the following
sections. To permit comparison of the results with current DOE
guidelines for radionuclides in soil, these guidelines are presented
in Table 2-1 (see Ref. 2-1). Actual cleanup limits will be
determined in the remedial investigation/feasibility
study-environmental impact study process. A guideline for uranium
in soil at these properties is currently being established.
All direct field measurements and laboratory results in this report
represent gross readings; background measurements and concentrations
have not been subtracted. All downhole gamma logging measurements
reported in this document have been rounded to the nearest thousand
cpm.
Analysis results for soil are provided in Sections 3.0 through 7.0.
The “less than” (<) notation in reporting results indicates that the radionuclide was not present in concentrations that are quantifiable with the instruments and techniques used. The "less than" value represents the lower limit of the quantitative capacity of the instrument and technique used. Therefore, the actual concentration of the radionuclide is less than the value preceded by the "less than" symbol. Determination of a "less than" value is based on various factors, including the volume, size, and weight of the sample; the type of detector used; the counting time; and the background count rate. In addition, because radioactive decay is a random process, a correlation between the rate of disintegration and a given radionuclide concentration cannot be precisely established. For this reason, the exact concentration of the radionuclide cannot be determined. As such, each value that can be quantitatively determined has an associated uncertainty term (±2 sigma), which represents the amount by which the actual concentration can be 2-12 TABLE 2-1 SUMMARY OF RESIDUAL CONTAMINATION GUIDELINES FOR FUSRAP PROPERTIES IV THE ST. LOUIS, MISSOURI, AREA BASIC DOSE LIMITS The basic limit for the annual radiation dose received by an individual member of the general public is 100 mrem/yr effective dose equivalent above background. SOIL (LAND) GUIDELINE Radionuclide Soil Concentration (pCi/K) Above Beck&round*tb,c Radium-226 5 pCi/g, averaged over the first 15 cm of soil Radium-228 below the surface; 15 pCi/g when averaged over Thorium-230 any 15-cm-thick soil layer below the surface Thorium-232 layer. Other radionuclides Soil guidelines will be calculated on a site-specific basis using the DOE manual developed for this use. •These guidelines take into account ingrowth of radium-226 from thorium-230 and of radium-228 from thorium-232, and assume secular equilibrium. If either thorium-230 and radium-226 or thorium-232 and radium-228 are both present, not in secular equilibrium, the guidelines apply to the higher concentration. If other mixtures of radionuclides occur, the concentrations of individual radionuclides shall be reduced so that the dose for the mixtures will not exceed the basic dose limit or the sum of the ratios of the soil concentrations of each radionuclide to the allowable limit for that radionuclide will not exceed 1 (unity). "These guidelines represent residual concentrations above background averaged across 15-cm-thick layers as described above and over any contiguous 100-cm2 surface area. cLocalized concentrations in excess of these limits are allowable provided that the average concentration over a 100-m2 area does not exceed these limits. However, concentrations must be as low as reasonably achievable (ALARA). 2-13 expected to differ from the value given in the table. T