1990-08 – Radiological characterization report for FUSRAP properties in St Louis, Missouri, Area – Vicinity Properties

1990-08-radiological-characterization-report-for-fusrap-properties-in-st-louis-missouri-area-vicinity-properties

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07 2 0 3. 2
DOE/OR/20722-203 Volume I
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Revisi9n 1
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Formerly Ut.ilized. Sites Rem_edial ~·Action. Program (FUSRAP)
·~if·kt.•… <~_.. :_z,. ·•·. . . Contract No.· DE-ACOS-81 OR20722 :u~(...\.~-.:_:.-i.-... ..;, ... ·-. ~ _.. -'::-\ ~h:~:\;~1~;F=>-r··_:::. :· .: :.· -RADl-OLOGICAL -CHARACTERIZATION

,·-f. . -…\.· THE ST. LOUIS, MISSOURI, AREA

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August 1990
Bechtel “‘ National, Inc.

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I DOE/OR/20722-203
• Revision 1
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RADIOLOGICAL
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FUSRAP PROPERTIES
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CHARACTERIZATION REPORT FOR IN THE ST. LOUIS, MISSOURI, AREA
VOLUME I
AUGUST 1990
Prepared for
United States Department of Energy
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Oak Ridge Operations Office
Under Contract No. DE-ACOS-810R20722
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1 r By
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K. c. Noey
c. M. Sekula
r Bechtel National, Inc. Oak Ridge, Tennessee P””
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Bechtel Job No. 14501
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EXECUTIVE SUMMARY
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Radiological characterization surveys were conducted on properties located in Hazelwood, Berkeley, and St. Louis, Missouri. Areas
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surveyed include the Norfolk and Western Railroad Properties: portions of Latty Avenue, McDonnell Boulevard, Hazelwood Avenue, and r
‘. Pershall Road (the haul roads) and associated properties: Latty Avenue_ vicinity properties: portions of Coldwater Creek and its
r vicinity properties: and the St. Louis Airport Site (SLAPS) vicinity properties.
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! The survey~ were performed as part of the Formerly Utilized Sites Remedial Action Program (FUSRAP), a U.S. Department of Energy (DOE)r program to identify and clean up or otherwise control sites where residual radioactive contamination (exceeding current guidelines)
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r 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.
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These St. Louis sites have been included on the National Priorities
I List, a list of sites identified for remedial action under the Comprehensive Environmental Response, Compensation, and Liabilityr Act of 1980, also known as Superfund. Plans are currently under way to initiate a remedial investigation/feasibility study (RI/FS) for
r the St. Louis sites. The data collected from the radiological surveys discussed in this report will be incorporated into the RI r 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,r Thermo Analytical/Eberline. The results are presented in this report. The goal of the surveys was to identify radionuclides r present on the properties at above-guideline concentrations and to determine depths and areal limits of such radioactive
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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
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‘. required to define the extent of contamination identified for these properties. Data collected from areas adjacent to these propertiesr have been extrapolated, both horizontally and vertically, to provide a conservative overestimate of the volume of contaminated soil r present. Additional soil samples will be collected and analyzed from these limited areas before remedial action begins. The data r’ from these additional soil samples will be provided in an addendum
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to this characterization report.
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l Survey results indicate that radioactive contamination is present on some of the properties in concentrations exceeding current DOE
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r 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
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uranium-238 and radium-226.
Although thorium-230 was identified in concentrations exceedingr guidelines, there are no immediate health risks to people in the vicinity, given the current use of the properties. Thorium-230 r emits alpha radiation, which cannot penetrate the dead layer of
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on a person’s body; therefore, there is no external exposure r hazard. Thorium-230 poses a radiological hazard only if it is

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t ingested or inhaled. The guidelines were derived to protect a member of the general public ~ven if an individual built a house
\ over the contamination, lived there for so years, grew all his own food, ate meat f-.E-Om-cattle gra.z_i.ng__in._the___ ar_e!l, ._dr_ank__mi.l_k~-~-J!!-~ows
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l _[.razing in the area, and drank water from the co.n.t_amina_t~..d~rea._ 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.
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Throughout the RI/FS process, public comments will be solicited to provide an opportunity for the public to participate in the design
and implementation of the RI/FS process and, ultimately, to allow for public involvement in the selection of cleanup options. At this
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l point, most of the field investigations necessary for the St. Louis area FUSRAP .sites have been completed. Data from these r investigations will be documented in an RI report. The FS will utilize information from the RI to develop and evaluate cleanup r alternatives and will ultimately lead to a record of decision by the
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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/FS process described above. This process
r will evaluate a full range of reasonable alternatives including on-site disposal (i.e., at SLAPS) and off-site disposal. The public
r will have a continuing role in the and attendance at public meetings. r process will be provided by EPA and
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Natural Resources.
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process through review of reports Oversight of the entire RI/FS the Missouri Department of
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TABLE OF CONTENTS
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List of Figures
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l List of Tables
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Acronyms r Abbreviations
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l.O Introduction
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1.1 Purpose and Objectivesr 1.2 Location and Description
1.3 History and Previous Radiological surveys
1.3.1 Latty Avenue Vicinity Properties
1.3.2 Coldwater Creek and Vicinity Properties r 1.3.3 Norfolk and Western Railroad Properties
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and SLAPS Vicinity Properties
1.3.4 Haul Roadsr References for Section 1.0
r 2.0 Study Area Investigation
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2.1 Grid System
2.2 Radiological surveys
2.2.1 Methods
2.2.2 Sample Collection and Analysis

2.3 Characterization Results
r 2.4 Background Measurements Reference for Section 2.0
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3.0 Characterization Results for the Latty Avenue Vicinity Properties
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3.1 Property 1 r 3.2 Property 2
3.3 Property 3 r 3.4 Property 4
3.5 Property 5
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3.6 Property 6
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xi xxv xxvi xxvii
1-1
1-1 1-3 1-13 1-16 1-17
1-18 1-18 1-19
2-1
2-1
2-5 2-5 2-10 2-12
2-14 2-17
3-1
3-1 3-2 3-3 3-3 3-4 3-4
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TABLE OF CONTENTS {continued}
r 4.0 Characterization Results for the Norfolk and Western
Railroad Properties
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4.1 Norfolk and Western Railroad Property Adjacent
to 9200 Latty Avenue r 4.2 Norfolk and Western Railroad Property Adjacent
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to Hanley Road r 4.3 Norfolk and Western Railroad Property South of SLAPS
l ( 4.4 Norfolk and Western Railroad Property Adjacent to Coldwater Creek
r 4.5 Norfolk and Western Railroad Property Adjacentl to Hazelwood Avenue and South of Latty Avenue
4.6 Norfolk and Western Railroad Property Adjacentr to Hazelwood Avenue and North of Latty Avenue
4.7 Norfolk and Western Railroad Property Adjacent to Eva Avenue
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5.0 Characterization Results for the Haul Roads and Associated Properties
5.1 Latty Avenue, McDonnell Boulevard, Hazelwoodr Avenue, and Pershall Road
5.2 Property 1
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5.3
Property 2

5.4 Property 3

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5.5
Property 4 5.6 Property 5

5.7 Property 6
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5.8 Property 7
5.9 Property 8
5.10 Property 9
5.11 Property 10
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5.12
Property 11

5.13 Property 12

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5.14
Property 13

4-1
4-1
4-2 4-3.
4-3
4-4
4-5
4-5
5-1
5-2 5-5 5-6 5-6 5-6 5-6 5-7 5-7 5-7 5-7 5-8 5-8 5-8 5-9
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TABLE OF CONTENTS (continued}
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r 5.15 Property 14 5-9
5.16 Property 14A 5-10r 5.17 Property 15 5-10
5.18 Property 16 5-11 F-5.19 Property 17 5-11
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5.20 Property 18 5-11
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5.21 Property 19 5-12
5.22 Property 20 5-12
5.23 Property 20A 5-12r 5.24 Property 21 5-13
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5.25 Property 22 5-13 \. 5.26 Property 23 5-13
5.27 Property 24 5-13
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5.28 Property 25 5-14
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5.29 Property 26 5-14 5.30 Property 27 5-14
5.31 Property 28 5-15
5.32 Property 29 5-15r 5.33 Property 30 5-15
5.34 Property 31 5-15
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I 5.35 Property 31A 5-16
5.36 Property 32 5-16 r 5.37 Property 33 5-16
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5.38 Property 34 5-17
5.39 Property 35 5-17
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5.40 Property 37 5-18
5.41 Property 38 5-19r 5.42 Property 39 5-21
5.43 Property 40 5-22 r 5.44 Property 41 5-22
5.45 Property 42 5-22
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5.46 Property 43 5-22
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TABLE OF CONTENTS {continued)
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l 5.47 Property 44
5.48 Property 45 r 5.49 Property 46
5.50 Property 47
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5.51
Property 48

5.52 Property 48A

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5.53
Property 49

5.54 Property so

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5.55
Property 51

5.56 Property 52
5.57 Property 53
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i 5.58 Property 54
5.59 Property 55
r 5.60 Property 56 5.61 Property 57 r 5.62 Property 58
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5.63 ·Property 59
5.64 Property 60r 5.65 Property 61
5.66 Property 62 r L 5.67 Property 63
5.68 Property 63A r Reference for Section 5.0
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6.0 Characterization Resultsr Associated Properties
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6.1 Coldwater Creek
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6.2 Property 1
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6.3 Property 2
6.4 Property 3
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6.5 Property 4
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6.6 Property 5
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5-23 5-23 5-23 5-24 5-24 5-24 5-25 5-25 5-25 5-25 5-26 5-26 5-26 5-26 5-27 5-27 5-28 5-28 5-28 5-28 5-28 5-29 5-30
for Coldwater Creek and 6-1
6-1 6-3 6-3 6-4 6-4
6-5
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TABLE OF CONTENTS (continued)
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6.7 Property 6
6.8 Property 7
6.9 Property 8
6.10 Property 9
6.11 Property 10
7.0 Characterization Results Adjacent to SLAPS
7.1 Banshee Road
for the Vicinity Properties
7.2 Ditches to the North and South of SLAPS
7.3 St. Louis Airport Authority Property
7.4 Ball Field Area
6-5 6-6 6-6 6-7 6-7
7-1
7-1 7-2 7-2 7-3
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LIST OF FIGURES
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Figure Title
r 1-1 Locations of FUSRAP Properties in the St. Louis, 1-2 I Missouri, Area
1-2 Locations of the Latty Avenue Properties and 1-4r SLAPS
1-3 Locations of the Latty Avenue Vicinity Properties 1-6
r 1-4 Locations of the Haul Roads Surveyed by BNI for DOE 1-7
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1-5 Locations of the Haul Roads Vicinity Properties 1-9
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1-6 Locations of the SLAPS Vicinity Properties 1-12
r 1-7 Locations of the Coldwater Creek Vicinity Properties 1-15
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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
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2-3 survey Grid for the SLAPS Vicinity Properties 2-4
r 2-4 survey Grid for Coldwater Creek 2-6
r 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 atr SLAPS and Vicinity Properties 2-9
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2-7 Background Sample and Measurement Locations in the St. Louis Area 2-15
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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
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I 3-3 Areas and Depths of Radioactive Contamination at
Property 1 on Latty Avenue 3-8

r 3-4 Surface Soil Sampling Locations for RadiologicalCharacterization of Property 2 on Latty Avenue 3-9
3-S Subsurface Soil sampling Locations for Radiological Characterization of Property 2 on Latty Avenue 3-10
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Figure
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3-7 3-8
3-9 3-10 3-11 3-12 3-13 3-14 3-15 3-16
3-17
4-1
4-2
4-3
LIST OF FIGURES (continued)
Title Page
Areas and Depths of Radioactive Contamination at Property 2 on Latty Avenue 3-11
Surface Soil Sampling Locations for Radiological Characterization of Property 3 on Latty Avenue 3-12
Subsurface Soil Sampling Locations for Radiological Characterization of Property 3 on Latty Avenue 3-13
Areas and Depths of Radioactive Contamination at Property 3 on Latty Avenue 3-14
Surface Soil Sampling Locations for Radiological Characterization of Property 4 on Latty Avenue 3-15
Subsurface Soil Sampling Locations for Radiological Characterization of Property 4 on Latty Avenue 3-16
Areas and Depths of Radioactive Contamination at Property 4 on Latty Avenue 3-17
Surface Soil Sampling Locations for Radiological Characterization of Property 5 on Latty Avenue 3-18
Subsurface Soil Sampling Locations for Radiological Characterization of Property 5 on Latty Avenue 3-19
Areas and Depths of Radioactive Contamination at Property 5 on Latty Avenue 3-20
Surface Soil Sampling Locations for Radiological Characterization of Property 6 on Seeger Industrial Drive 3-21
Subsurface Soil Sampling Locations for Radiological Characterization of Property 6 on Seeger Industrial Drive 3-22
surface Soil Sampling Locations for Radiological Characterization of the Norfolk and Western Railroad Property Adjacent to 9200 Latty Avenue 4-7
Subsurface Soil Sampling Locations for Radiological Characterization of the Norfolk and Western Railroad Property Adjacent to 9200 Latty Avenue 4-8
Areas and Depths of Radioactive Contamination at the Norfolk and Western Railroad Property Adjacent to 9200 Latty Avenue 4-9
xii
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LIST OF FIGURES (continued) Figure Title Page
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< r r r l r I r 4-4 4-5 4-6 4-7 4-8 4-9 4-10 4-11 4-12 4-13 4-14 4-15 S-1 Surface Soil Sampling Locations for Radiological Characterization of the Norfolk and Western Railroad Property Adjacent to Hanley Road 4-10 Subsurface Soil Sampling Locations for Radiological Characterization of the Norfolk and Western Railroad Property Adjacent to Hanley Road 4-11 Surface Soil Sampling Locations for Radiological Characterization of the Norfolk and Western Railroad Property South of SLAPS 4-12 Subsurface Soil Sampling Locations for Radiological Characterization of the Norfolk and Western Railroad Property South of SLAPS 4-14 Areas and Depths of Radioactive Contamination at the Norfolk and Western Railroad Property South of SLAPS 4-1~ Surface Soil Sampling Locations for Radiological Characterization of the Norfolk and Western Railroad Property Adjacent to Coldwater Creek 4-18 Subsurface Soil Sampling Locations for Radiological Characterization of the Norfolk and Western Railroad Property Adjacent to Coldwater Creek 4-19 Soil Sampling Locations for Radiological Characterization of the Norfolk and Western Railroad Property Adjacent to Hazelwood Avenue and South of Latty Avenue 4-20 Areas and Depths of Radioactive Contamination at the Norfolk and Western Railroad Property Adjacent to Hazelwood Avenue and South of Latty Avenue 4-21 Soil Sampling Locations for Radiological Characterization of the Norfolk and Western Railroad Property Adjacent to Hazelwood Avenue and North of Latty Avenue 4-22 Soil Sampling Locations for Radiological Characterization of the Norfolk and Western Railroad Property Adjacent to Eva Avenue 4-23 Areas and Depths of Radioactive Contamination at the Norfolk and Western Railroad Property Adjacent to Eva Avenue 4-24 surface Soil Sampling Locations for RadiologicalCharacterization of Latty Avenue 5-31 xiii r r f!PI I l r r l r r '· r r ., r r ( r r r r r r Figure 5-2 5-3 5-4 5-5 5-6 5-7 5-8 5-9 5-10 5-11 5-12 5-13 5-14 5-15 5-16 5-17 LIST OF FIGURES (continued) Title Subsurface Soil Sampling Locations for Radiological Characterization of Latty Avenue 5-33 Areas and Depths of Radioactive Contamination at Latty Avenue S-35 Composite Surface Soil Sampling Locations for Radiological Characterization of McDonnell Boulevard 5-37 Surface Soil Sampling Locations for Radiological Characterization of McDonnell Boulevard 5-39 Subsurface Soil sampling Locations for Radiological Characterization of McDonnell Boulevard 5-41 Areas and Depths of Radioactive Contamination at McDonnell Boulevard 5-43 Composite Surface Soil Sampling Locations for Radiological Characterization of Hazelwood Avenue S-45 Surface Soil Sampling Locations for Radiological Characterization of Hazelwood Avenue 5-47 Subsurface Soil Sampling Locations for Radiological Characterization of Hazelwood Avenue 5-49 Areas and Depths of Radioactive contamination at Hazelwood Avenue 5-51 Composite Surface Soil Sampling Locations for Radiological Characterization of Pershall Road 5-53 surface Soil Sampling Locations for Radiological Characterization of Pershall Road 5-55 Subsurface Soil Sampling Locations for Radiological Characterization of Pershall Road 5-58 Areas and Depths of Radioactive Contamination at Pershall Road 5-60 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 2 5-62 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 3 5-63 xiv r I l rm I ~ I i r I r r ! r 1 F1"' i '· r l r-' I I r r Figure 5-18 5-19 5-20 5-21 5-22 5-23 5-24 5-25 5-26 5-27 5-28 5-29 5-30 5-31 LIST OF FIGURES (continued} Title Soil Sampling Locations for Radiological Characterization of Haul Roads VicinityProperty 4 Soil Sampling Locations for RadiologicalCharacterization of Haul Roads VicinityProperty 5 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 5 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 6 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 7 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 7 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 8 Soil· Sampling Locations for Radiological Characterization of Haul Roads VicinityProperty 9 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 9 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 10 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 10 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 11 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 11 Soil Sampling Locations for Radiological Characterization of Haul Roads VicinityProperty 12 xv 5-64 5-65 5-66 5-67 5-68 5-69 5-70 5-71 5-72 5-73 5-74 5-75 5-76 5-77 r r r r r r t i I r I r rm" I l i \ r ! i I Figure 5-32 5-33 5-34 5-35 5-36 5-37 5-38 5-39 5-40 5-41 5-42 5-43 5-44 5-45 LIST OF FIGURES (continued) Title Soil Sampling Locations for Radiological Characterization of Haul Roads VicinityProperty 13 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 14 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 14 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 14A Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 15 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 15 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 16 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 16 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 17 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 19 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 19 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 20 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 20 Soil Sampling Locations for Radiological Characterization of Haul Roads VicinityProperty 20A xvi Page 5-78 5-79 5-80 5-81 5-8~ 5-84 5-85 5-86 5-87 5-88 5-89 5-90 5-91 5-92 r i' r r r r r r ' r r r t r Figure 5-46 5-47 5-48 5-49 5-50 5-51 5-52 5-53 5-54 5-55 5-56 5-57 5-58 5-59 LIST OF FIGURES (continued) Title Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 21 5-93 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 21 5-94 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 22 5-95 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 22 5-96 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 23 5-97 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 23 5-98 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 24 5-99 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 24 5-100 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 25 5-101 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 26 5-102 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 26 5-103 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 27 5-104 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 27 5-105 Soil Sampling Locations for Radiological Characterization of Haul Roads VicinityProperty 28 5-106 xvii r r r r r r ~ t ( ,i I r i r r r r r i r l Figure 5-60 5-61 5-62 5-63 5-64 5-65 5-66 5-67 5-68 5-69 5-70 5-71 5-72 5-73 LIST OF FIGURES (continued) Title Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 29 5-107 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 30 5-108 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 30 5-109 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 31 5-110 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 31A 5-111 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 32 5-112 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 32 5-113 Soil· Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 33 5-114 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 33 5-115 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 34 5-116 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 34 5-117 surface Soil Sampling Locations for 1988 Radiological Characterization of Haul.Roads Vicinity Property 35 5-118 Subsurface Soil Sampling Locations for 1988 Radiological Characterization of Haul Roads Vicinity Property 35 5-119 Soil Sampling Locations for 1989 RadiologicalCharacterization of Haul Roads Vicinity Property 35 5-120 xviii r r rm I ( r r r r r r r l r r r I I Figure 5-74 5-75 5-76 5-77 5-78 5-79 5-80 5-81 5-82 5-83 5-84 5-85 5-86 5-87 LIST OF FIGURES (continued) Title Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 35 Surface Soil Sampling Locations for 1987 Radiological Characterization of Haul Roads Vicinity Property 37 Subsurface Soil Sampling Locations for 1987 Radiological Characterization of Haul Roads Vicinity Property 37 Soil Sampling Locations for 1989 Radiological Characterization of Haul Roads Vicinity Property 37 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 37 surface Soil Sampling Locations for 1987 Radiological Characterization of Haul Roads Vicinity Property 38 Subsurface Soil Sampling Locations for 1987 Radiological Characterization of Haul Roads Vicinity Property 38 Soil Sampling Locations for 1989 Radiological Characterization of Haul Roads Vicinity Property 38 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 38 Surface Soil Sampling Locations for 1987 Radiological Characterization of Haul Roads Vicinity Property 39 Subsurface Soil Sampling Locations for 1987 Radiological Characterization of Haul Roads Vicinity Property 39 Soil Sampling Locations for 1989 Radiological Characterization of Haul Roads Vicinity Property 39 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 39 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 40 xix 5-121 5-122 5-123 5-124 5-125 5-126 5-127 5-128 5-129 5-130 5-131 5-132 5-133 5-134 r. 1. r r r ! r r \ r F'1 l r F"1 ( ; I r I r r r \ i i r Figure 5-88 5-89 5-90 5-91 5-92 5-93 5-94 5-95 5-96 5-97 5-98 5-99 5-100 S-101 LIST OF FIGURES (continued) Title Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 40 5-135 Soil Sampling Locations for RadiologicalCharacterization of Haul Roads VicinityProperty 41 5-136 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 41 5-137 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 42 5-138 Areas and Depths of Radioactive contamination at Haul Roads Vicinity Property 42 5-139 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 43 5-140 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 43 5-141 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 44 S-142 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 44 5-143 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 45 5-144 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 45 5-145 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 46 5-146 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 47 5-147 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 47 S-148 rm i xx r I I r pm! \ I r I r r ! r r r j1 I r r r r r r Figure S-102 S-103 S-104 S-lOS S-106 S-107 5-108 S-109 S-110 S-111 S-112 S-113 S-114 LIST OF FIGURES (continued) Title Soil Sampling Locations for Radiological Characterization of Haul Roads VicinityProperty 48 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property 48 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 48A Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 49 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 50 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property Sl Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property S2 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property S3 Areas and Depths of Radioactive Contamination at Haul Roads Vicinity Property S3 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property S4 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property SS Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property S6 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property S7 xxi S-149 5-150 S-lSl S-1S2 S-1S3 5-1S4 S-lSS S-1S6 S-1S7 S-lSa S-1S9 S-160 S-161 ('!11!!1 LIST OF FIGURES (continued) r Figure Title 5-115 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 58 5-116 Areas and Depths of Radioactive Contamination atr Haul Roads Vicinity Property 58 5-117 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 59 5-118 Soil Sampling Locations for Radiological r Characterization of Haul Roads Vicinity I Property 60 5-119 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 61 r 5-120 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity Property 62 r. ! I 5-121 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity r Property 63 I 5-122 Soil Sampling Locations for Radiological Characterization of Haul Roads Vicinity i i Property 63A 6-1 Surface Sediment Sampling Locations for 1986r Radiological Characterization of Coldwater Creek 6-2 Soil Sampling Locations for 1987 rm' I :Radiological Characterization of Coldwater Creek I 6-3 Soil Sampling Locations for Radiological Characterization of 1.5 Miles of Coldwater Creek r North of Pershall Road 6-4 Soil Sampling Locations for Radiological ,~ Characterization of Property 1 on Coldwater Creek l r 6-5 Soil Sampling Locations for Radiological Characterization of Property 2 on Coldwater Creek 6-6 Areas and Depths of Radioactive Contamination at Property 2 on Coldwater Creek r I 5-162 5-163 5-164 5-165 5-166 5-167 5-168 5-169 6-9 6-11 6-13 6-15 6-16 6-17 xxii r r" r ! P'" ! l l r rm I r r I F" l r r r r l rm' I I r r. 1 ., r I ! Figure 6-7 6-8 6-9 6-10 6-11 6-12 6-13 6-14 7-1 7-2 7-.3 7-4 7-5 7-6 7-7 7-8 LIST OF FIGURES (continued) Title Soil Sampling Locations for Radiological Characterization of Property 3 on Coldwater Creek Soil Sampling Locations for Radiological Characterization of Property 4 on Coldwater Creek Soil Sampling Location for Radiological Characterization of Property 5 on Coldwater Creek Soil Sampling Locations for Radiological Characterization of Property 6 on Coldwater Creek Soil Sampling Locations for Radiological Characterization of Property 7 on Coldwater Creek Soil Sampling Locations for Radiological Characterization of Property 8 on Coldwater Creek Soil Sampling Location for Radiological Characterization of Property 9 on Coldwater Creek Soil Sampling Location for Radiological Characterization of Property 10 on Coldwater Creek Surface Soil Sampling Locations for Radiological Characterization of Banshee Road Subsurface Soil Sampling Locations for Radiological Characterization of Banshee Road Areas and Depths of Radioactive Contaminati9n at Banshee Road Surface Soil Sampling Locations for Radiological Characterization of the Ditches to the North and South of SLAPS Subsurface Soil Sampling Locations for Radiological Characterization of the Ditches to the North and South of SLAPS Areas and Depths of Radioactive Contamination at the Ditches to the North and South of SLAPS Surface Soil Sampling Locations for Radiological Characterization of the St. Louis Airport Authority Property Subsurface Soil Sampling Locations for Radiological Characterization of the St. Louis Airport Authority Property xxiii 6-18 6-19 6-20 6-21 6-22 6-23 6-24 6-25 7-6 7-8 7-10 7-12 7-14 7-16 7-18 7-20 ~ \ Figure I I 7-9 r 7-10 r 7-11 rm I I 7-12 ~ l 1 i ! rm r i 1 r r r I r r 1 ,... I LIST OF FIGURES {continued) Title Areas and Depths of Radioactive Contamination at the St. Louis Airport Authority Property Surface Soil Sampling Locations for Radiological Characterization of the Ball Field Area Subsurface Soil Sampling Locations for Radiological Characterization of the Ball Field Area Areas and Depths of Radioactive Contamination at the Ball Field Area 7-22 7-24 7-25 7-26 xxiv r r. LIST OF TABLES r Table Title Page 1-1 Tax Map Ref eren~e List for Latty Avenue Vicinity Properties 1-2 Tax Map Reference List for Haul Roads Vicinity Properties 1-3 Tax Map Reference List for Coldwater Creek Vicinity Properties r 2-1 Summary of Residual Contamination Guidelines for FUSRAP Properties in the St. Louis, Missouri, Area 2-2 Background Radionuclide Concentrations in Soil and Radiation Levels in the St. Louis Area r r r. \ NOTE: TABLES ! VOLUME THROUGH r I 1 pq I r r'1' I. [ j ) r 3-1 THROUGH 5-7 ARE CONTAINED IN II OF THIS REPORT. TABLES 5-8 7-8 ARE CONTAINED IN VOLUME III. xxv r 1-5 1-10 1-14 2-13 2-16 r ACRONYMS r r J r i r r r. 1 i r I I r i J \ 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 Hazelwood 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 rm j ' xxvi r r" I l ABBREVIATIONS fl"'IJ cm centimeter } 2 cm square centimeter cpm counts per minute I"""' I ft foot 1 h hour r ha hectares in. inch \!"!!ft km kilometer ' m meter 2 ~ m square meter 3 m cubic meter ,.. mi mile \ mrem millirem mrem/yr millirem per year r mR/h milliroentgens per hour µR/h microroentgens per hour ,. I pCi/g picocuries per gram l yd3 cubic yard pm yr year r r xxvii I ~ 1' r. 1 ; i 1.0 INTRODUCTION ~ l ( The cha~acterization activities reported in this document were ~ conducted as part of the Formerly Utilized Sites Remedial Action I Program (FUSRAP), a U.S. Department of Energy (DOE) effort to l~ identify and clean up or otherwise control sites where residual l 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 FUSRAP. Surveys were conducted from 1986 through 1989 at DOE's direction by BNI and its radiological subcontractor, Thermo Analytical/Eberline (TMA/E). 1.1 PURPOSE AND OBJECTIVES r This report describes the procedures used to conduct the 1986 through 1989 radiological characterization of FUSRAP properties in F"° 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 r1" j/ 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 i' 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. r \ 1-1 lo.& I I\) FIGURE 1·1 LOCATIONS OF FUSRAP PROPERTIES IN THE ST. LOUIS, MISSOURI, AREA r 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. r 1.2 LOCATION AND DESCRIPTION r. 1 SLAPS is an 8.8-ha (21.7-acre) tract located in St. Louis County, rm Missouri, approximately 24 km (15 mi) from downtown St. Louis and I 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 r 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. r 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 r 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 i ', properties. These routes traverse Hazelwood, Berkeley, and St. Louis and are located near HISS and SLAPS as shown in Figure 1-4. pA J 1-3 I., ,.,·"·' I I • \ i '., / . i ·,, / ' ,, I . • FUSRAP SITES . I . LAMBERT·ST. LOUIS INTERNATIONAL AIRPORT NOTTO SCALE ·-·-·-·-·!.... ....... ., t ~ BERKELEY Ii·-·-···. O 😀 . ,...1 ... :a ! p TO DOWNTO' ......•\ ST. LOUIS \ FIGURE 1M2 LOCATIONS OF THE LATTY AVENUE PROPERTIES AND SLAPS r ! TABLE 1-1 ~ I ) TAX MAP REFERENCE LIST FOR LATTY AVENUE VICINITY PROPERTIES Reference Number Tax Map Locator Number Property 1 10KS30098 Property 2 10KS10012 Property 3 10KS20022 Property 4 10KS20044 Property s 10KS20033 Property 6 10K510067 r l ¥fil I r ' r r I " 1• ' \ . r I l r ~ I 1-5 r i 11 I I I J(------.HISS ... g~ 1.61 1--1 I en Nl100 ·-·-·-·--·----· ,...---------------·-· ,---------------, I r-----------1 ' I I 1 'I 11 N1600 ....---11 I, I,'I N1400 PHOPERTY I '{___ I I N1100 I I I L---~~~~-----.....11""'™"""-™_..._l~-~~A_vrn_UE......._---..... "----L___l!H.fl/lli1000 I 1 I 1n I I 1LJ I PROPERTY l I PROP[RIY 4 IPROPERTY 5 I I I I I I I ~-------l I I ------1 I I D------..... _ _,__j) BUILDING r-----tJ [] IPROP[RlY 6 I PROP[RTY BOUNDARY I I I I II r () 1'--OJ~ll"8-1.-Is-T"ro§ .. "' "' ~ I !:!' ~ N ~ ~' N w w I.Al w w ,,., w w "' 0 ~ "' 0 " ., "' "' N1100 N1000 N !~ NGOO 0 ~ " ... FIGURE 1·3 LOCATIONS OF THE LAITY AVENUE VICINITY PROPERTIES S34~MSI 1.0GN I ""' ..J • • • • HAUL ROADS 0 500 1000 SCAL! IN FEET FIGURE 1·4 LOCATIONS OF THE HAUL ROADS SURVEYED BY BNI FOR DOE r In addition to these haul roads, several adjacent properties were r 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 r I corresponds to a St. Louis County tax map locator number. Table 1-2 references the assigned identifier to its respective tax map locator r I number. I r 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 r the property from the city for use as a permanent disposal site. Actions to transfer ownership of the property to DOE have been f"ID initiated. l The SLAPS vicinity properties include Banshee Road, the area southr of Banshee Road owned by the St. Louis Airport Authority, the recreational areas to the north of SLAPS known as the ball field r '· area, and the ditches to the north and south of SLAPS. Figure 1-6 shows the locations of the SLAPS vicinity properties. 1 r t 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 r (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 r ~ischarges 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. r 1. r 1-8 i I 15 FIGURE 1·5 LOCATIONS OF THE HAUL ROADS VICINITY PROPERTIES r TABLE 1-2 TAX MAP REFERENCE LIST FOR HAUL ROADS VICINITY PROPERTIES Page 1 of 2 Reference Number Tax Map Locator Number 1-10 ~I 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 10K210031 10K230073 10K240106 10K240094 10K330140 10K220151 10K220140 10K330030 10K330063 10K330074 10K330085 10K310111 10K330131 10K330173 10K330113 10K330122 10K610080 r re i r rm I I ra r I r r I* I r r I r I 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 r. 1 ! TABLE 1-2 ,.. I {continued) Page 2 of 2 r. 1 Reference Number Tax Map Locator Number r r l r r. 1 -i r I r r r 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 so Property Sl Property S2 Property S3 Property S4 Property SS Property S6 Property S7 Property 58 Property 59 Property 60 Property 61 Property 62 Property 63 Property 63A 10KS20066 10KS40097 10K630303 09K220140 10KS40031 09K220041 10KS40075 09K220030 09K2200S2 09K220074 09K22008S 09K220184 09K220173 09K3101S3 09K310164 09K31017S 09K322187 09K220162 09K220106 09K2100S3 09K210064 09Kl40026 09Kl40015 09Kll0304 09Kl30027 09Kl30016 09Kl30038 10K430020 State of Missouri Pershall Road Right-of-Way v. i fla I I 1-11 FIGURE 1·6 LOCATIONS OF THE SLAPS VICINITY PROPERTIES SSJW!811.0GN TABLE 1-3 TAX MAP REFERENCE LIST FOR COLDWATER CREEK VICINITY PROPERTIES Reference Number Tax Map Locator Number Property 1 09K120095 Property 2 09K120149 Property 3 09K120040 Property 4 09K120127 Property 5 09K120116 Property 6 10K440030 Property 7 10K440096 Property 8 10K440074 Property 9 10K420010 Property 10 10K140024 re I r F. l i r i r r I r. 1-13 r. \ r Each vicinity property associated with Coldwater creek was assigned r a numerical identifier that corresponds to a st. Louis county tax I map locator number. Table 1-3 references the assigned identifier to its respective tax map locator number. Figure 1-7 shows the r \ I vicinity properties associated with Coldwater Creek. ,,,.. 1i l. 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 I 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 r Nuclear Regulatory Commission {NRC) license for storage, and the i property was later sold to the current owner. At this time, barium ;' ~) r _sulfat~ residues were reportedly diluted with site soil and transported to ~t Lake LandfilJ. in St. Louis County. r r The residues stored at 9200 Latty Avenue were deposited directly on the ground. When the last residues were removed from the ground r surface, a reported 30-to 46-cm (12-to 18-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 r Boulevard was the haul road used for the transport of barium sulfate residues. Pershall Road -ang_jlazelwood-Avenue -also were possible r" . --~ ' I haul roads during the transport of residues among the St. Louis i sites. The soils along the shoulders of Latty Avenue also were r surveyed and found to be contaminated, possibly as a result of residues spilling from the transport trucks. 1-14 r r l 1.3.1 Latty Avenue Vicinity Properties r In 1981, Oak Ridge Associated Universities (ORAU) performed a radiological survey of the northern and eastern boundaries of HISS f l 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 r properties along Latty Avenue (Refs. 1-5 and 1-6). ORNL discovered r that redistribution of the contamination had occurred, probably as a result of flooding, surface runoff, and road and utility line I activities. The major contaminant found was thorium-230; radium-226 and uranium-238 were present in lesser amounts. r J Based on the ORNL characterization, DOE directed BNI to perform r r 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 r 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. r In 1986, DOE directed BNI to provide radiological support to the ~ I cities during their road improvement project. During this coverage, radium-226 and thorium-230 contamination in excess of DOE remedial r 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, i I 1-16 r I r materials contaminated in excess of remedial action guidelines were 3 removed and placed in storage at HISS. Approximately 4,206 m 3 r (4,600 yd) of material was placed in a storage pile developed specifically to accommodate these materials and covered with a I low-permeability membrane. In addition to gamma scanning the soil that was not placed in storage at HISS, gross alpha counting was r i used as a screening technique. Using gross alpha counting, soil samples were scanned for 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 Futura Coatings site and Coldwater Creek and ~ along the entire length of Latty Avenue. \ l 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 r disposal alternatives. 1 l 1.3.2 Coldwater Creek and Vicinity Properties ~ In 1982, DOE directed BNI to perform a radiological characterization r f of the ditches to the north of SLAPS and portions of Coldwater Creek (Ref. 1-8). Results of this survey indicated that gamma-emitting i r j 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 r 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 r archived soil samples from the 1982 survey for thorium-230. The results of these analyses indicated the need to collect soil samples r beyond the area surveyed in 1982 (on the ball field) to adequately r determine the extent characterization are r r ! of contamination. Results for the ball field reported in Section 7.0 of this report. 1-17 Additionally, sediment samples were collected in 1986 from the sides J and center of Coldwater Creek beginning at SLAPS and continuing I downstream to HISS. The data from these samples indicated spotty contamination along the entire distance. r 1.3.3 Norfolk and Western Railroad Propertiesr and SLAPS Vicinity Properties A radiological and limited chemical characterization was conducted at SLAPS in 1986 by BNI. Results of this survey showed contamination present on SLAPS extending to depths as great as s.s 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 i contamination and evaluate disposal alternatives. No formal radiological characterization had been performed on these properties ( until that of 1986-1989. ( r-1.3.4 Haul Roads l In 1985, DOE directed ORNL to perform a radiological survey of the I ~ 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 µR/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 thi:J r survey, parts of Hazelwood Avenue, Pershall Road, and McDonnell Boulevard were designated for remedial action in 1986. r i r r I 1-18 ! REFERENCES FOR SECTION 1.0 r 1-1 Bechtel National, Inc. Characterization Report for the r-Hazelwood Interim Storage Site, Hazelwood, Missouri, 1 I DOE/OR/20722-141, Oak Ridge, Tenn., June 1987. rm I I 1-2 Bechtel National, Inc. Radiological Characterization Report for the Futura Coatings Site, Hazelwood, Missouri, r DOE/OR/20722-158, Oak Ridge, Tenn., July 1987. I r 1-3 Oak Ridge Associated Universities. Preliminary Radiological Survey of Proposed Street Right-of-Way at Futura Coatings, Inc., 9200 Latty Avenue, Hazelwood, Missouri, Oak Ridge, Tenn., December 1981. r 1-4 Oak Ridge Associated Universities. Concentrations of Radionuclides in Soil Samples from Propertv at 9150 Latty r Avenue, Hazelwood, Missouri, Oak Ridge, Tenn., April 28, 1982. \' 1-5 Oak Ridge National Laboratory. Radiological Survey of Latty j Avenue in· the Vicinity of the Former Cotter Site, Hazelwood/ Berkeley, Missouri CLMOOl), ORNL/TM-10006, Oak Ridge, Tenn., r ! May 1987. r r i 1-6 Oak Ridge National Laboratory. Radiological Survey of Properties in the Vicinity of the Former Cotter Site, Hazelwood/Berkeley, Missouri CLM003), ORNL/TM-10008, Oak Ridge, Tenn., May 1987. r 1-7 Bechtel National, Inc. Post-Remedial Action Report for the Hazelwood Site -1984, DOE/OR/20722-76, Oak Ridge, Tenn., September 1985. r 1-8 Bechtel National, Inc. Radiological Survey of the Ditches at the St. Louis Airport Site , Oak Ridge, Tenn., August r 1983.
r
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1-19
r
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r

1-9 Bechtel National, Inc. Radiological and Limited Chemical
r
Characterization Report for the St. Louis Airport Site,
r
! St. Louis, Missouri, DOE/OR/20722-163, Oak Ridge, Tenn., August 1987.
1-10 Oak Ridge National Laboratory. Results of the Radiation r Measurements Taken at Transportation Routes CLM004) in Hazelwood, Missouri, ORNL/RASA-86/31, Oak Ridge, Tenn.,
December
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2.0 STUDY AREA INVESTIGATION

r
The radiological characterization surveys conducted at the FUSRAP
i 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
r
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 S.YSTEM
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

r 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
i
t 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
rI 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 r the southwest corner of SLAPS. These grids were tied to the SLAPS
I
grid system and to the Missouri state grid system with sufficient
r
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
r established at each. At that time, it was not suspected that
contamination would be as extensive as it is in the area and that
r the two sites would be essentially continuous. This accounts for
having different grid systems for the two sites.

r
2-1
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FIGURE 2·1 SURVEY GRID FOR THE VICINITY PROPERTIES ADJACENT TO LAITY AVENUE

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FIGURE 2-2 SURVEY GRID FOR THE HAUL ROADS AND
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ASSOCIATED VICINITY PROPERTIES

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Minimal clearing was done along Coldwater Creek so that a traverse
I ~
line could be established with right angle offsets at 152-m {500-ft)
intervals {Figure 2-4). The traverse line was referenced back to
r the SLAPS grid. Sampling locations were determined by measuring
i J along the offset lines. All characterization data correspond to coordinates on the grids. All grids shown in the figures in this
r
document are displayed in measurement units of feet.
r
2.2 RADIOLOGICAL SURVEYS
I
r 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
I
investigations were performed subsequently to establish the depths of contamination in areas that the surface surveys identified as r being contaminated. An additional purpose of the subsurface investigations was to locate any subsurface contamination that
I
lacked surface manifestation.
I
r 2.2.1 Methods
i
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
r
r 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
~
I boundaries of the precisely correct detector readings.
i
I
it can be conducted quickly; however, the areas identified as being contaminated may not be because of the effect of nearby contamination on
2-5

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I
Near-surface gamma radiation measurements were made 30 cm (12 in.) r above the ground surface at 3.8-m (12.5-ft) intervals in the areas
1
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
r survey, a 5-cm by 5-cm (2-in. by 2-in.) sodium-iodide, thallium-activated [NaI(Tl)] detector, was used during this survey.
r
I The detector was mounted in a probe assembly surrounded with a
i
conical lead shield to reduce the gamma intensity through the sides, r= thus producing a downward directional response. The detector was
I
i
r
I 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
r
radionuclide that cannot be detected in si~u.
!
r
Gamma exposure rates at 1 m (3 ft) above the ground were measured on
the Norfoik and Western Railroad property adjacent to HISS and on the SLAPS vicinity properties to the north and south of SLAPS using
r
I
(
a pressurized ionization chamber (PIC). The PIC has a response to gamma radiation that is proportional to exposure in roentgens.
r
I Readings were made at 37 selected grid points on the Norfolk and Western Railroad property adjacent to HISS (see Figure 2-5) and at
i
i 69 locations at SLAPS and vicinity properties (see Figure 2-6). This exposure rate information will be valuable for use in remedial rm action planning, environmental monitoring, and the preparation of
!
documentation required by CERCLA/National Environmental Policy Act (NEPA) activities.
rm
!
Subsurface investigations were conducted by drilling and/or hand.
r
l augering holes at most 30.5-m (100-ft) grid intersections. The depth to which each borehole was drilled was based on guidance from
r
r.
1
I
2-7
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r=
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f

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I

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FIGURE 2-5 GAMMA EXPOSURE RATE MEASUREMENT LOCATIONS l
AT THE NORFOLK AND WESTERN RAILROAD PROPERTY ADJACENT TO HISS
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2-8
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the geologist on site and the radiological support representative.
i
The hand-augered holes were typically 1 to 1.3 m (3 to 4 ft) deep.
1
Although gamma logging is typically used to determine the depth of
i subsurface contamination, thorium-230 (the principal contaminant)
I cannot be detected in situ; therefore, continuous soil samples were collected from the 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
r
section of this report.
Downhole gamma logging was performed in each c