HomeMy WebLinkAbout22009 CNAD Assessment Report 20180601i S:\AAA-Master Projects\Childress Klein\CHK-006 Nevada Blvd and Cordage St\Brownfields Report\Final to DEQ\Brownfields Assessment Report CNAD (BPN 22009-18-060)_20180601.docx
Brownfields Assessment Report Charlotte Naval Ammo Depot
Charlotte, North Carolina Brownfields Project No. 22009-18-060 H&H Job No. CHK-006
Table of Contents
1.0 Introduction .............................................................................................................................1
1.1 Background ............................................................................................................................2
2.0 Brownfields Assessment Activities ........................................................................................4
3.0 Soil Assessment Activities.......................................................................................................5
3.1 Soil Sampling Methodology ..................................................................................................5
3.2 Soil Sampling Analytical Results ..........................................................................................6
4.0 Surface Water and Sediment Assessment Activities............................................................8
4.1 Surface Water and Sediment Sampling Methodology ..........................................................8
4.2 Surface Water Sampling Analytical Results .........................................................................9
4.3 Sediment Sampling Analytical Results .................................................................................9
5.0 Receptor Survey Activities ...................................................................................................11
6.0 Summary and Conclusions...................................................................................................13
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List of Tables
Table 1 Summary of Soil Analytical Data
Table 2 Summary of Surface Water Analytical Data
Table 3 Summary of Sediment Analytical Data
List of Figures
Figure 1 Site Location Map
Figure 2 Site and Surrounding Area Map
Figure 3 Sample Location Map
Figure 4 Map of Compound Concentrations Above Screening Levels
Figure 5 Receptor Survey Map
List of Appendices
Appendix A Boring Logs
Appendix B Laboratory Analytical Reports
Appendix C DEQ Brownfields Receptor Survey Form
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Brownfields Assessment Report Charlotte Naval Ammo Depot
Charlotte, North Carolina Brownfields Project Nos. 22009-18-060 H&H Job No. CHK-006
1.0 Introduction
Hart & Hickman, PC (H&H) has prepared this Brownfields Assessment Report for the Charlotte
Naval Ammo Depot (Brownfields Project No. 22009-18-060) located at 3100 Nevada Boulevard
in Charlotte, Mecklenburg County, North Carolina (Site or subject Site). The subject Site consists
of approximately 17 acres of undeveloped wooded land located in a primarily light industrial and
commercial area of Charlotte. A Site location map is provided as Figure 1 and the Site and
surrounding area are shown on Figure 2.
Records for the Brownfields property date back to 1905 when the Site primarily consisted of
agricultural land and/or pastures. In 1942, the Charlotte Naval Ammunition Depot (CNAD) began
construction on a 2,266-acre facility that included the Site property and was used for munition
disarmament and manufacturing. The subject Site is located in CNAD Area #1 where anti-aircraft
ammunition were assembled in loading lines, packaged, and shipped. Area #1 was composed of
22 buildings and was bounded to the north by Brookford Street and to the south by Cordage Street.
Specifically, CNAD Building 1-81 was reported to have been located in the central portion of the
subject Site. Additionally, it was reported that a trichloroethylene (TCE) degreasing operation was
historically located in Area #2 on the southeast corner of Building 2-30. Historical structures
associated with former CNAD activities were demolished in the 1980s. Since then, the Site has
remained vacant and wooded with the exception of a railroad track spur that was previously used
by CNAD. Preliminary redevelopment plans indicate that the site will be utilized for light
industrial uses including, but not limited to, warehousing, general distribution businesses, offices,
parking, and possibly other commercial uses.
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1.1 Background
Under purview of the United States Army Corps of Engineers (USACE), multiple phases of
assessment and remediation have been conducted at CNAD utilizing funds available from the
Defense Environmental Restoration Program (DERP) for Formerly Used Defense Sites (FUDS).
The Site is currently listed by the North Carolina Department of Environmental Quality (DEQ) as
Federal Remediation Branch Site NC9799F4900. To obtain additional information regarding
ongoing CNAD assessment and remedial activities, H&H reviewed a Phase I Remedial
Investigation (RI) Report dated April 1995, a Revised Final Phase II RI Report dated October
2000, a Revised Final Remedial Action Work Plan dated May 2012, and subsequent Remedial
Action and Performance Monitoring Reports through March 2017. Additionally, H&H reviewed
on-Site groundwater data from March 2018 for monitoring wells NADMW-38, NADMW-58, and
NADMW-66. The monitoring well locations are shown in Figure 3.
The USACE assessment and remedial activities have primarily been focused in the areas of higher
concentration groundwater impacts identified in the transition and bedrock groundwater zones. At
the subject Site, the transition zone is generally present at depths ranging from 8 to 37 feet below
ground surface (ft bgs) as documented in boring logs from monitoring wells NADMW-37,
NADMW-38, NADMW-57, NADMW58, and NADMW-65. The bedrock zone is generally
present at depths ranging from 12 to 50 ft bgs as documented in boring logs from monitoring wells
NADMW-36 and VERSAR-22. The results of the groundwater assessment indicate that
chlorinated volatile organic compounds (VOCs) have impacted the on-Site groundwater at
concentrations that exceed 15A NCAC 02L .0202 Groundwater Standards (2L Standards).
Specifically, concentrations of TCE have historically been detected at levels exceeding the 2L
Standard of 3 micrograms per liter (µg/L) and the DEQ Division of Waste Management (DWM)
Non-Residential Vapor Intrusion Groundwater Screening Level (GWSL) of 4.4 µg/L. TCE
detections in on-Site transition zone groundwater range from a historical high of 3,200 µg/L
(NADMW-58) in 2014 to a concentration of 32 µg/L (NADMW-66) in 2018. Additionally, cis-
1,2-dichloroethene and vinyl chloride have been detected at concentrations that exceed 2L
Standards with the vinyl chloride detection (93 µg/L) also exceeding the Non-Residential VISL of
25 µg/L.
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In 2013, the USACE awarded a contract for remediation of groundwater contamination at CNAD
to address groundwater impacts in the transition and bedrock zones. The remediation selection
included injection of molasses to enhance bioremediation of chlorinated VOCs in groundwater
and monitored natural attenuation of the groundwater after the injection events. According to the
March 2017 Remedial Action and Performance Monitoring Report, fourteen (14) injection wells
have been installed at the subject Site and the last documented injection event was performed in
July 2016. The monitoring and injection well locations are shown on Figure 3.
Vapor intrusion assessment has not been conducted at the subject Site. However, as part of the
USACE investigation, soil vapor data related to remedial activities has been collected at nearby
properties with occupied structures. Results of this data show that methane, a byproduct of
molasses fermentation, has been detected at levels in excess of 100 % Lower Explosive Limit
(LEL). Due to these elevated concentrations, a passive venting system was installed around the
exterior of a structure located on the adjacent southern property.
The Site received a letter of eligibility for entry into the DEQ Brownfields Program on March 6,
2018. As part of the Brownfields process, a kick-off/data gap meeting with the Prospective
Developer (PD), DEQ Brownfields personnel, and H&H was held on March 20, 2018 to discuss
Site history, previous assessment activities, proposed redevelopment plans, and data gaps
associated with current conditions at the Site.
On April 23, 2018, H&H submitted a Brownfields Assessment Work Plan (Work Plan) proposing
to conduct soil, surface water, and sediment assessment activities to evaluate Site conditions for
potential impacts associated with environmental concerns identified during previous investigations
and the March 20th data gap meeting. DEQ Brownfields subsequently provided Work Plan
approval in a letter dated April 24, 2018.
A summary of Brownfields assessment activities is provided in the following sections.
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2.0 Brownfields Assessment Activities
In May 2018, H&H conducted Brownfields assessment activities at the Site. The assessment
activities included collection of seven (7) soil samples and two (2) co-located surface water and
sediment samples for laboratory analyses in accordance with the DEQ Brownfields approved
Work Plan. In addition to soil, surface water, and sediment assessment activities, H&H completed
a receptor survey at the Site and nearby area. Brownfields assessment sample locations are
depicted on Figure 3.
Prior to conducting the field activities, H&H contacted North Carolina 811, the public utility
locator, to mark subsurface utilities located on the Site. H&H also contracted with a private utility
locator to screen proposed sample locations for subgrade utilities not marked by the public locator.
Additionally, soil boring locations were hand cleared to 5 ft bgs to further screen the boring
locations for the presence of subsurface utilities.
The assessment activities were conducted in general accordance with DEQ IHSB Guidelines for
Assessment and Cleanup (Guidelines) dated October 2015 and the most recent versions of the U.S.
Environmental Protection Agency (EPA) Region IV Science and Ecosystem Support (SESD) Field
Branches Quality System and Technical Procedures guidance. The results of the soil assessment
and surface water and sediment assessment are provided in Section 3.0 and 4.0, respectively, the
receptor survey results are provided in Section 5.0, and summary and conclusions based on the
assessment activities are provided in Section 6.0.
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3.0 Soil Assessment Activities
On May 1, 2018, H&H contracted with Carolina Soil Investigations, LLC (CSI) to collect soil
samples for laboratory analysis in areas of concern based on former CNAD building 1-81 and the
proposed redevelopment plan. H&H also collected two (2) background soil samples from
locations in the northeastern and southeastern potions of the Site that do not appear to have been
affected by historical uses, to evaluate for naturally occurring concentrations of metals in Site soil.
Soil boring locations (denoted by SB nomenclature) and background boring locations (denoted by
SB-BG nomenclature) are shown on Figure 3 and were advanced in the following locations:
• one soil boring was advanced in the northeastern portion of former CNAD building 1-81
(SB-1);
• one soil boring was advanced in the southeastern portion of former CNAD building 1-81
(SB-2);
• one soil boring was advanced in the central portion of former CNAD building 1-81 (SB-
3);
• one soil boring was advanced in the northwestern portion of former CNAD building 1-81
(SB-4);
• one soil boring was advanced in the southwestern portion of former CNAD building 1-81
(SB-5);
• one background soil boring was advanced in the northeastern portion of the Site to establish
Site-specific background concentrations of metals (BG-1); and
• one background soil boring was advanced in the southeastern portion of the Site to establish
Site-specific background concentrations of metals (BG-2).
3.1 Soil Sampling Methodology
H&H advanced five (5) soil borings and collected five (5) soil samples for laboratory analysis to
evaluate the potential for impact in areas of concern identified at the Site and in areas at the Site
that will be disturbed during grading associated with redevelopment activities. As part of soil
assessment activities, CSI utilized a track-mounted direct push technology (DPT) drill rig to
advance soil borings to refusal depths ranging from approximately 9 to 13 ft bgs in the locations
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outlined above. Continuous soil samples were collected from the borings using a decontaminated
stainless steel hand auger or acetate lined macrocore sleeves. The soil samples were logged for
lithologic description and screened using visual and olfactory methods for obvious evidence of
staining, unusual odors, and for the presence of volatile organic vapors using a calibrated
photoionization detector (PID). Based upon results of field screening, one soil sample was
collected from each soil boring for laboratory analysis from shallow soil (0-2, 2-4, or 3-5 ft bgs).
Boring logs with lithologic descriptions and field screening results are provided in Appendix A.
Soil samples selected for laboratory analysis were placed directly into dedicated laboratory-
supplied sample containers, labeled with the sample identification, date, and requested analysis,
and placed in a laboratory supplied cooler with ice. The samples were delivered to Con-Test
Analytical Laboratory (Con-Test), a North Carolina certified laboratory, under standard chain of
custody protocols for analysis of VOCs by EPA Method 8260, semi-volatile organic compounds
(SVOCs) by EPA Method 8270, PCBs by EPA Method 8082, and Resource Conservation and
Recovery Act (RCRA) metals plus hexavalent chromium by EPA Methods 6020/7471/7196. In
addition, H&H collected soil samples for polychlorinated biphenyl (PCB) Congeners by EPA
Method 1668 and requested that the laboratory hold the samples pending analytical results for
samples analyzed for PCBs by EPA Method 8082. For quality assurance/quality control purposes,
a duplicate soil sample was collected from the SB-2 soil boring and submitted to Con-Test for the
same analysis as the SB-2 parent soil sample.
Following sampling activities, the soil sample borings were properly abandoned and the surfaces
were repaired similar to pre-drilling conditions. Additionally, the soil sample locations were
estimated using a hand-held global positioning system (GPS) unit.
3.2 Soil Sampling Analytical Results
A tabular summary of soil sample analytical results is presented in Table 1 and the laboratory
analytical report is provided in Appendix B. The laboratory analytical results were compared to
the DEQ IHSB Residential and Industrial/Commercial PSRGs dated February 2018. In addition
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to the PSRGs, metals results were compared to Site-specific and published concentrations for
naturally occurring metals in North Carolina soil.
Laboratory analytical results indicate that trace levels of acetone were detected in the SB-1 (0.037
J milligram per kilogram [mg/kg]), SB-3 (0.023 J mg/kg), and SB-4 (0.034 J mg/kg) soil samples
at concentrations above the laboratory method detection limit, but well below the Residential
PSRG of 12,000 mg/kg. No other VOCs were detected above the laboratory method detection
limits in other soil samples collected at the Site.
Results of SVOC analysis did not identify compounds at concentrations above the laboratory
method detection limits in any of the soil samples.
The soil samples were submitted for laboratory analysis of PCBs by EPA Method 8082A.
Laboratory analytical results indicate that no PCBs were detected above the laboratory method
detection limits in the soil samples. Therefore, the additional soil samples were not released for
PCB congener analysis.
As expected, naturally occurring levels of several metals were detected at concentrations above
the laboratory method detection limits in each soil sample. Arsenic was detected in the SB-1 (1.5
mg/kg), SB-3 (1.9 mg/kg) and SB-4 (1.2 mg/kg) soil samples and SB-BG-1 (1.9 mg/kg) and SB-
BG-2 (0.81 mg/kg) background soil samples at concentrations exceeding the Residential PSRG
(0.68 mg/kg). Additionally, hexavalent chromium was detected in the SB-4 (0.54 J mg/kg) soil
sample at a concentration that exceeds the Residential PSRG (0.31 mg/kg). The detected arsenic
and hexavalent chromium concentrations are below Industrial/Commercial PSRGs of 0.31 mg/kg
and 6.5 mg/kg, respectively. In addition, the concentrations are within the expected range for
naturally occurring levels and at similar concentrations to levels detected in background soil
borings. Therefore, arsenic and hexavalent chromium concentrations detected in soil borings SB-
1, SB-3, and SB-4 are considered background. No other metals were detected at concentrations
exceeding DEQ IHSB PSRGs in the soil samples.
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4.0 Surface Water and Sediment Assessment Activities
On May 1, 2018, H&H collected one (1) co-located surface water and sediment sample from an
unnamed tributary of Steele Creek. Per the Work Plan, attempts were also made to collect
additional co-located samples from a second location. However, these attempts were unsuccessful
due to dry conditions at targeted areas for potential surface water flow. This information was
communicated to DEQ Brownfields via telephone and the Work Plan variance was verbally
approved. The surface water and sediment samples (denoted by SW and SED nomenclature,
respectively) were collected during base flow conditions and their locations are shown in Figure
3.
4.1 Surface Water and Sediment Sampling Methodology
H&H collected one (1) co-located surface water and sediment sample (SW-1/SED-1) from an
unnamed tributary of Steele Creek. Field measurements were collected for the surface water
sample, including turbidity using a MicroTPI turbidimeter and dissolved oxygen (DO),
temperature, specific conductivity, pH, and oxidation-reduction potential (ORP) using a YSI Pro
Plus water quality meter. The sediment sample was collected from the base of the stream in the
mid-portion of the stream channel using a decontaminated stainless steel AMS dredge sampler.
The surface water and sediment samples were placed directly into dedicated laboratory-supplied
sample containers, labeled with the sample identification, date, and requested analysis, and placed
in a laboratory supplied cooler with ice. The samples were delivered to Con-Test under standard
chain of custody protocols for analysis of VOCs by EPA Method 8260, SVOCs by EPA Method
8270, PCBs by EPA Method 8082, and RCRA metals plus hexavalent chromium by EPA Methods
6020/7471/7196. For quality assurance/quality control purposes, duplicate surface water and
sediment samples were collected from the SW-1 and SED-1 location and submitted to Con-Test
for the same analysis as the parent samples.
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4.2 Surface Water Sampling Analytical Results
A tabular summary of surface water sample analytical results is presented in Table 2 and the
laboratory analytical report is provided in Appendix B. The laboratory analytical results were
compared to the Title 15A NCAC 2B Surface Water Standards (2B Standards) for Class C Waters.
Laboratory analytical results indicate that trace levels of TCE were detected in the SW-1 (1.0
micrograms per liter [µg/L]) and SW-DUP-1 (SW-1 duplicate surface water sample) (1.2 µg/L)
surface water samples at concentrations above the laboratory method detection limit, but well
below the 2B Standard of 30 µg/L. Trace levels of cis-1,2-dichloroethylene (DCE) were also
detected in the SW-1 (2.2 µg/L), SW-DUP-1 (3.0 µg/L) surface water samples at concentrations
above the laboratory method detection limit, however, there is not an established 2B Standard for
cis-1,2-DCE. No other VOCs were detected above the laboratory method detection limits in other
soil samples collected at the Site.
Results of SVOC analysis did not identify compounds at concentrations above the laboratory
method detection limits in any of the surface water samples.
As expected, naturally occurring levels of metals were detected at concentrations above the
laboratory method detection limits in each surface water sample. Barium was detected in the SW-
1 (170 µg/L), SW-DUP-1 (170 µg/L) surface water samples at concentrations above the laboratory
method detection limit, but well below the 2B Standard of 21,000 µg/L. No other metals were
detected at concentrations exceeding 2B Standards in the surface water samples.
4.3 Sediment Sampling Analytical Results
A tabular summary of sediment sample analytical results is presented in Table 3 and the laboratory
analytical report is provided in Appendix B. The laboratory analytical results were compared to
the DEQ IHSB Residential and Industrial/Commercial PSRGs dated February 2018. In addition
to the PSRGs, metals results were compared to published concentrations for naturally occurring
metals in North Carolina soil.
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Results of VOC analysis did not identify compounds at concentrations above the laboratory
method detection limits in any of the soil samples.
Laboratory analytical results indicate that trace levels of bis (2-ethylhexyl) phthalate were detected
in the SED-DUP-1 (SED-1 duplicate sediment sample location) (0.37 milligrams per kilogram
[mg/kg]) sediment sample at a concentration above the laboratory method detection limit, but well
below the Residential PSRG of 39 mg/kg. No other SVOCs were detected above the laboratory
method detection limits in other soil samples collected at the Site.
As expected, naturally occurring levels of several metals were detected at concentrations above
the laboratory method detection limits in each sediment sample. Arsenic was detected in the SED-
1 (2.1 mg/kg) and SED-DUP-1 (SED-1 duplicate sediment sample) (2.2 mg/kg) sediment samples
at concentrations exceeding the Residential PSRG (0.68 mg/kg). Additionally, hexavalent
chromium was detected in the SED-1 (0.85 J mg/kg) and SED-DUP-1 (0.56 J mg/kg) sediment
samples at concentrations exceeding the Residential PSRG (0.31 mg/kg). The detected arsenic
and hexavalent chromium concentrations are below Industrial/Commercial PSRGs of 0.31 mg/kg
and 6.5 mg/kg, respectively. In addition, the concentrations are within the expected range for
naturally occurring levels and at similar concentrations to levels detected in background soil
borings. Therefore, arsenic and hexavalent chromium concentrations detected in sediment sample
SED-1 are considered background. No other metals were detected at concentrations exceeding the
DEQ IHSB PSRGs in the soil samples.
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5.0 Receptor Survey Activities
On May 9, 2018, H&H performed receptor survey activities at the Site and in the nearby area. The
receptor survey included an intensive pedestrian and vehicular survey to obtain information about
land use, water supply, basements, underground utilities, drains, and surface water bodies located
within a 1,500-foot (ft) radius of the Site in accordance with the DEQ Brownfields approved Work
Plan. H&H also utilized the online Mecklenburg County Groundwater & Wastewater Services
(GWS) Well Information System map to identify potential potable water supply wells located
within a 1,500 ft radius of the Site. In addition, H&H identified land use and zoning in the vicinity
of the Site and the locations of main underground utilities. A discussion of the receptor survey
activities is provided in the following sections and a copy of the DEQ Brownfields receptor survey
form is included in Appendix C.
Zoning
The subject Site and properties to the east, south, and west are zoned Heavy Industrial (I-2).
Properties to the north are zoned Heavy Industrial and Light Industrial (I-1).
Municipal Water Availability
Municipal water supplied by Charlotte Water is available to the Site and surrounding area. H&H
did not identify sources of public drinking water within 1,500 ft of the Site based on the DEQ
Source Water Assessment Program’s geographic information system map. The City of Charlotte
and Mecklenburg County obtain their water from Lake Norman and Mountain Island Lake which
are located approximately 15 miles north of the Site at Mountain Island Lake’s closest point.
Additionally, H&H observed municipal water meters for the Site and surrounding properties.
Water Supply Wells
H&H conducted a pedestrian and vehicular survey of properties within a 1,500 ft radius of the Site
to identify potential water supply wells. H&H also utilized the online Mecklenburg County
Groundwater and Wastewater Services (GWS) Well Information System database map to identify
potential potable water supply wells located within a 1,500 ft radius of the Site. No public or
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private water supply wells were identified during pedestrian and vehicular survey activities or on
the GWS database map.
Surface Water Bodies
Three unnamed intermittent surface water bodies and two potential wetlands areas were identified
on the Site. The unnamed tributaries flow into Steele Creek approximately 0.5-mile west of the
Site. Based on the DEQ classification system, Steele Creek is a Class C surface water body. A
Class C surface water body is defined as “waters protected for uses such as secondary recreation,
fishing, wildlife, fish consumption, aquatic life including propagation, survival and maintenance
of biological integrity, and agriculture. Secondary recreation includes wading, boating, and other
uses involving human body contact with water where such activities take place in an infrequent,
unorganized, or incidental manner”.
Subsurface Structures
H&H conducted a visual reconnaissance in the Site area to identify potential subsurface structures
within 100 ft of the subject Site. H&H observed evidence of subsurface utilities including sanitary
sewer, storm sewer, municipal water, natural gas, and/or communication on and adjacent to the
subject Site.
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6.0 Summary and Conclusions
H&H has completed Brownfields assessment activities at the Charlotte Naval Ammo Depot
Brownfields property located in Charlotte, North Carolina. The assessment activities were
conducted in accordance with the DEQ Brownfields approved Work Plan and included soil,
surface water, and sediment sampling to evaluate for potential impacts prior to redevelopment of
the Site for light industrial uses. A summary of the assessment results is provided below.
Soil
H&H collected seven (7) soil samples for laboratory analysis of VOCs, SVOCs, PCBs, and RCRA
metals plus hexavalent chromium. Laboratory analytical results indicate that arsenic was detected
in the SB-1 (1.5 mg/kg), SB-3 (1.9 mg/kg) and SB-4 (1.2 mg/kg) soil samples and SB-BG-1 (1.9
mg/kg) and SB-BG-2 (0.81 mg/kg) background soil samples at concentrations exceeding the
Residential PSRG. Additionally, hexavalent chromium was detected in the SB-4 (0.54 J mg/kg)
soil sample at a concentration that exceeds the Residential PSRG. The detected arsenic and
hexavalent chromium concentrations are below Industrial/Commercial PSRGs. In addition, the
concentrations are within the expected range for naturally occurring levels and at similar
concentrations to levels detected in background soil borings. No VOCs, PCBs, or SVOCs were
detected at concentrations above Residential PSRGs in soil samples collected at the Site.
Surface Water and Sediment
H&H collected one (1) co-located surface water and sediment sample from an unnamed tributary
of Steele Creek. Laboratory analytical results of surface water samples did not indicate any
exceedances of 2B Standards. Laboratory analytical results of sediment samples indicate that
arsenic was detected in the SED-1 (2.1 mg/kg) and SED-DUP-1 (2.2 mg/kg) sediment samples at
concentrations exceeding the Residential PSRG. Additionally, hexavalent chromium was detected
in the SED-1 (0.85 J mg/kg) and SED-DUP-1 (0.56 J mg/kg) sediment samples at concentrations
exceeding the Residential PSRG. The detected arsenic and hexavalent chromium concentrations
are below Industrial/Commercial PSRGs. In addition, the concentrations are within the expected
range for naturally occurring levels and at similar concentrations to levels detected in background
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soil borings. No VOCs or SVOCs were detected at concentrations above Residential PSRGs in
soil samples collected at the Site.
In summary, low level concentrations of arsenic and hexavalent chromium were identified in soil
and sediment at the Site. Based on these results, additional soil and sediment assessment do not
appear warranted and soil disturbed during future redevelopment activities can be managed in
accordance with a DEQ Brownfields approved Environmental Management Plan (EMP). The
results of groundwater assessment activities indicate that TCE was detected above the 2L Standard
and DWM Non-Residential GWSL in the on-Site transition zone monitoring well network. Based
on groundwater assessment results, groundwater should be managed in accordance with a DEQ
Brownfields approved EMP if encountered during redevelopment of the Site. Additionally, results
of on-Site groundwater and off-Site soil vapor assessment activities indicate there is potential for
structural vapor intrusion of methane and/or chlorinated VOCs into the proposed Site building.
Therefore, the PD plans to implement vapor mitigation measures for the proposed building. A
vapor mitigation plan will be submitted to DEQ for approval under separate cover prior to
construction of the proposed Site building.
Tables
Table 1
Summary of Soil Analytical Data
Charlotte Naval Ammo Depot
Charlotte, North Carolina
H&H Job No. CHK.006
Sample ID SB-1 SB-2 SB-DUP-1 SB-3
Depth (ft bgs)0-2 2-4 2-4 2-4
Sample Date 5/1/18 5/1/18 5/1/18 5/1/18 Range Mean Range Mean Ref.
Units
VOCs (8260B)
Acetone 0.037 J <0.11 <0.10 0.023 J 12,000 140,000 ----------
SVOCs (8270D)
ALL BRL ALL BRL ALL BRL ALL BRL --------------
PCBs (8082A)
ALL BRL ALL BRL ALL BRL ALL BRL --------------
RCRA Metals (6020/7471B/7196A)
Arsenic 1.5 DL-15 0.63 DL-15 0.62 DL-15 1.9 DL-15 0.68 3.0 0.81-1.9 1.36 1.0-18 4.8 A
Barium 200 DL-15 250 DL-15 180 DL-15 120 DL-15 3,100 47,000 180 180 50-1,000 356 A
Cadmium 0.037 DL-15, J <0.80 DL-15 <0.84 DL-15 <0.84 DL-15 14.0 200 0.091-0.78 0.435 1.0-10 4.3 B
Total Chromium 28 DL-15 29 DL-15 25 DL-15 26 DL-15 NS NS 35-43 39 7.0-300 65 A
Hexavalent Chromium 0.23 DL-03, J 0.21 DL-03, J 0.2 DL-03, J 0.21 DL-03, J 0.31 6.5 0.21-0.31 0.26 NS NS --
Trivalent Chromium 27.77 28.79 24.8 25.79 23,000 350,000 34.79-42.69 38.74 NS NS --
Lead 16 DL-15 4.1 DL-15, J 3.3 DL-15, J 10 DL-15 400 800 5.8-14 9.9 BRL-50 16 A
Mercury 0.034 B 0.021 B, J 0.019 B, J 0.04 B 2.3 9.7 0.022-0.025 0.024 0.03-0.52 0.121 A
Selenium <1.9 DL-15 <1.8 DL-15 <1.9 DL-15 <1.8 DL-15 78 1,200 1.7-1.8 1.75 <0.1-0.8 0.42 A
Silver 0.048 DL-15, J 0.052 DL-15, J 0.053 DL-15, J 0.051 DL-15, J 78 1,200 0.047-0.05 0.049 BRL-5.0 NS C
Notes:
Ref.
2) Range and mean values of background metals for North Carolina soils taken from Elements in North American Soils by Dragun and Chekiri, 2005.
1) North Carolina Department of Environmental Quality (DEQ) Preliminary Soil Remediation Goals (PSRGs) (February 2018).
-- = not applicable; NA = Not analyzed; NS= not specified; BRL = below laboratory reporting limit; ft bgs = feet below the ground surface; RCRA = Resource Conservation and Recovery Act
Bold indicates concencentration exceeds DEQ Residential PSRGs (February 2018).
SB-2
Residential
PSRG(1)
Industrial/
Commercial
PSRG(1)
With the exception of metals, only analytes with concentrations above the laboratory reporting limit are shown.
Site-Specific Background
Metals in Soil
C. Soils of the conterminous USA
B. Southeastern US soils
A. North Carolina soils
Laboratory analytical methods are shown in parentheses.
Soil concentrations are reported in milligrams per killogram (mg/kg).
DL-15 = sample required a dilution due to low internal standard recovery of the lesser diluted digestion, reporting limit is elevated
DL-03 = reporting limit elevated due to matrix
B = analyte was detected in the associated laboratory blank as well as in the sample
J = compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in an estimated concentration
Regional Background
Metals in Soil(2)
mg/kg
File: S:\AAA-Master Projects\Childress Klein\CHK-006 Nevada Blvd and Cordage St\Brownfields Report\Brownfields Assessment Tables CNAD (BPN 22009-18-060)_201805XXBrownfields Assessment Tables CNAD (BPN 22009-18-060)_201805XXDate: 5/22/2018
Table 1 (Page 1 of 2)
Hart & Hickman, PC
Table 1
Summary of Soil Analytical Data
Charlotte Naval Ammo Depot
Charlotte, North Carolina
H&H Job No. CHK.006
Sample ID SB-4 SB-5 SB-BG-1 SB-BG-2
Depth (ft bgs)2-4 3-5 0-2 2-4
Sample Date 5/1/18 5/1/18 5/1/18 5/1/18 Range Mean Range Mean Ref.
Units
VOCs (8260B)
Acetone 0.034 J <0.099 NA NA 12,000 140,000 ----------
SVOCs (8270D)
ALL BRL ALL BRL NA NA --------------
PCBs (8082A)
ALL BRL ALL BRL NA NA --------------
RCRA Metals (6020/7471B/7196A)
Arsenic 1.2 DL-15 0.42 DL-15 1.9 DL-15 0.81 DL-15 0.68 3.0 0.81-1.9 1.36 1.0-18 4.8 A
Barium 130 DL-15 220 DL-15 180 DL-15 180 DL-15 3,100 47,000 180 180 50-1,000 356 A
Cadmium <0.79 DL-15 0.041 DL-15, J <0.78 DL-15 0.091 DL-15, J 14.0 200 0.091-0.78 0.435 1.0-10 4.3 B
Chromium (total)17 DL-15 9.9 DL-15 43 DL-15 35 DL-15 NS NS 35-43 39 7.0-300 65 A
Hexavalent Chromium 0.54 DL-03, J 0.2 DL-03, MS-16, J 0.31 DL-03, J 0.21 DL-03, J 0.31 6.5 0.21-0.31 0.26 NS NS --
Trivalent Chromium 16.46 9.7 42.69 34.79 23,000 350,000 34.79-42.69 38.74 NS NS --
Lead 12 DL-15 3.4 DL-15, J 14 DL-15 5.8 DL-15 400 800 5.8-14 9.9 BRL-50 16 A
Mercury 0.037 B 0.015 B, J 0.022 B, J 0.025 B, J 2.3 9.7 0.022-0.025 0.024 0.03-0.52 0.121 A
Selenium <1.8 DL-15 0.22 DL-15, J <1.7 DL-15 <1.8 DL-15 78 1,200 1.7-1.8 1.75 <0.1-0.8 0.42 A
Silver 0.048 DL-15, J 0.036 DL-15, J 0.047 DL-15, J 0.05 DL-15, J 78 1,200 0.047-0.05 0.049 BRL-5.0 NS C
Notes:
Industrial/
Commercial
PSRG(1)
Residential
PSRG(1)
Site-Specific Background
Metals in Soil
1) North Carolina Department of Environmental Quality (DEQ) Preliminary Soil Remediation Goals (PSRGs) (February 2018).
2) Range and mean values of background metals for North Carolina soils taken from Elements in North American Soils by Dragun and Chekiri, 2005.
mg/kg
Ref.
A. North Carolina soils
B. Southeastern US soils
C. Soils of the conterminous USA
With the exception of metals, only analytes with concentrations above the laboratory reporting limit are shown.
DL-03 = reporting limit elevated due to matrix
DL-15 = sample required a dilution due to low internal standard recovery of the lesser diluted digestion, reporting limit is elevated
Soil concentrations are reported in milligrams per killogram (mg/kg).
Laboratory analytical methods are shown in parentheses.
Bold indicates concencentration exceeds DEQ Residential PSRGs (February 2018).
-- = not applicable; NA = Not analyzed; NS= not specified; BRL = below laboratory reporting limit; ft bgs = feet below the ground surface; RCRA = Resource Conservation and Recovery Act
J = compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in an estimated concentration
B = analyte was detected in the associated laboratory blank as well as in the sample
Regional Background
Metals in Soil(2)
File: S:\AAA-Master Projects\Childress Klein\CHK-006 Nevada Blvd and Cordage St\Brownfields Report\Brownfields Assessment Tables CNAD (BPN 22009-18-060)_201805XXBrownfields Assessment Tables CNAD (BPN 22009-18-060)_201805XXDate: 5/22/2018
Table 1 (Page 2 of 2)
Hart & Hickman, PC
Table 2
Summary of Surface Water Analytical Data
Charlotte Naval Ammo Depot
Charlotte, North Carolina
H&H Job No. CHK.006
Sample ID SW-1 SW-DUP-1
Sample Date 5/1/18 5/1/18Units
VOCs (8260B)
cis-1,2-Dichloroethylene 2.2 3.0 720
Trichloroethylene 1.0 1.2 30
SVOCs (8270D)
ALL BRL ALL BRL --
RCRA Metals (6020/7471B/7196A)
Arsenic <0.80 <0.80 10
Barium 170 170 21,000
Cadmium <1.0 <1.0 --
Chromium (total)<2.0 <2.0 --
Hexavalent Chromium <4.0 <4.0 --
Lead <2.0 <2.0 --
Mercury <0.10 <0.10 0.012
Selenium <10 <10 5
Silver <1.0 <1.0 --
Notes:
1) North Carolina Department of Environmental Quality's (DEQ's) 15A NCAC 02B Surface Water Quality Standards and Criteria for Class C waters (2B Standards) (September 22, 2017).With the exception of metals, only analytes with concentrations above the laboratory reporting limit are shown.
Surface water concentrations are reported in micrograms per liter (µg/L).
-- = not applicable; NE = not established; BRL = below laboratory reporting limit; RCRA = Resource Conservation and Recovery Act
µg/L
SW-1
NC 2B Standards(1)
File: S:\AAA-Master Projects\Childress Klein\CHK-006 Nevada Blvd and Cordage St\Brownfields Report\Brownfields Assessment Tables CNAD (BPN 22009-18-060)_201805XXBrownfields Assessment Tables CNAD (BPN 22009-18-060)_201805XX
Date: 5/22/2018
Table 2 (Page 1 of 1)
Hart & Hickman, PC
Table 3
Summary of Sediment Analytical Data
Charlotte Naval Ammo Depot
Charlotte, North Carolina
H&H Job No. CHK.006
Sample ID SED-1 SED-DUP-1
Sample Date 5/1/18 5/1/18 Range Mean Range Mean Ref.
Units
VOCs (8260B)
ALL BRL ALL BRL --------------
SVOCs (8270D)
Bis(2-Ethylhexyl)phthalate <0.44 0.37 39 160 ----------
RCRA Metals (6020/7471B/7196A)
Arsenic 2.1 DL-15 2.2 DL-15 0.68 3.0 0.81-1.9 1.36 1.0-18 4.8 A
Barium 190 DL-15 180 DL-15 3,100 47,000 180 180 50-1,000 356 A
Cadmium 0.11 DL-15, J 0.1 DL-15, J 14.0 200 0.091-0.78 0.435 1.0-10 4.3 B
Chromium (total)40 DL-15 44 DL-15 ----35-43 39 7.0-300 65 A
Trivalent Chromium 39.15 43.44 0.31 6.5 0.21-0.31 0.26 NS NS --
Hexavalent Chromium 0.85 DL-03, J 0.56 DL-03, J 23,000 350,000 34.79-42.69 38.74 NS NS --
Lead 10 DL-15 11 DL-15 400 800 5.8-14 9.9 BRL-50 16 A
Mercury 0.016 B, J 0.011 B, J 2.3 9.7 0.022-0.025 0.024 0.03-0.52 0.121 A
Selenium <1.9 DL-15 <1.8 DL-15 78 1,200 1.7-1.8 1.75 <0.1-0.8 0.42 A
Silver 0.045 DL-15, J 0.052 DL-15, J 78 1,200 0.047-0.05 0.049 BRL-5.0 NS C
Notes:
SED-1
Regional Background
Metals in Soil(2)
C. Soils of the conterminous USA
With the exception of metals, only analytes with concentrations above the laboratory reporting limit are shown.
Soil concentrations are reported in milligrams per killogram (mg/kg).
B. Southeastern US soils
J = compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in an estimated concentration
B = analyte was detected in the associated laboratory blank as well as in the sample
DL-03 = reporting limit elevated due to matrix
DL-15 = sample required a dilution due to low internal standard recovery of the lesser diluted digestion, reporting limit is elevated
mg/kg
Industrial/
Commercial
PSRG(1)
Residential
PSRG(1)
Site-Specific Background
Metals in Soil
Laboratory analytical methods are shown in parentheses.
Bold indicates concencentration exceeds DEQ Residential PSRGs (February 2018).
-- = not applicable; NS= not specified; BRL = below laboratory reporting limit; RCRA = Resource Conservation and Recovery Act
1) North Carolina Department of Environmental Quality (DEQ) Preliminary Soil Remediation Goals (PSRGs) (February 2018).
2) Range and mean values of background metals for North Carolina soils taken from Elements in North American Soils by Dragun and Chekiri, 2005.
Ref.
A. North Carolina soils
File: S:\AAA-Master Projects\Childress Klein\CHK-006 Nevada Blvd and Cordage St\Brownfields Report\Brownfields Assessment Tables CNAD (BPN 22009-18-060)_201805XXBrownfields Assessment Tables CNAD (BPN 22009-18-060)_201805XX
Date: 5/22/2018
Table 3 (Page 1 of 1)
Hart & Hickman, PC
Figures
TITLE
PROJECT
SITE LOCATION MAP
CHARLOTTE NAVAL AMMO DEPOTBROWNFIELDS PROJECT NO. 22009-18-0603100 NEVADA BOULEVARDCHARLOTTE, NORTH CAROLINA
DATE:
JOB NO:
REVISION NO:
FIGURE:
3-27-18 0
1CHK-006
SITE
0 2000 4000
APPROXIMATE
SCALE IN FEETN
U.S.G.S. QUADRANGLE MAP
QUADRANGLE
7.5 MINUTE SERIES (TOPOGRAPHIC)
FORT MILL, NORTH CAROLINA, 1996
CORD
A
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BROO
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D
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T
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T
REVISION NO. 0
JOB NO. CHK-006
DATE: 5-22-18
FIGURE NO. 2
CHARLOTTE NAVAL AMMO DEPOT
BROWNFIELDS PROJECT NO. 22009-18-060
3100 NEVADA BOULEVARD
CHARLOTTE, NORTH CAROLINA
SITE & SURROUNDING AREA MAP
LEGEND
SITE PROPERTY BOUNDARY
SURFACE WATER FEATURE
PROPOSED BUILDING FOOTPRINT
FORMER LOCATION OF
CHARLOTTE NAVAL AMMUNITION
DEPOT BUILDING 1-81
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
NOTE:
AERIAL IMAGERY OBTAINED FROM MECKLENBURG CO. GIS
DEPARTMENT (2017).NEVADA BOULEVARD
UNITED SCRAP METAL
(9925 BROOKFORD STREET)
PENSKE USED TRUCK CENTER
(9831 BROOKFORD STREET)
DYKE INDUSTRIES
(9815 BROOKFORD STREET)
COLEMAN BURNETT INC.
PROFESSIONAL LANDSCAPE SERVICES
(9717 BROOKFORD STREET)
M EAGLES TOOL WAREHOUSE
(9701 BROOKFORD STREET)
JGB ENTERPRISES
(1407 WESTINGHOUSE BOULEVARD)
NORFOLK SOUTHERN RAIL YARD
(11535 CORDAGE STREET)
MULTI-TENANT WAREHOUSE
(3031 NEVADA BOULEVARD)
GENPACK LLC
(1201 WESTINGHOUSE BOULEVARD)
BILL WADE & ASSOCIATES
(9621 BROOKFORD STREET)
SUN CHEMICAL CORPORATION
(1701 WESTINGHOUSE BOULEVARD)
INDUSTRIAL WAREHOUSE
(9700 BROOKFORD STREET)
BARTEX RECYCLING CORP.
(9712 BROOKFORD STREET)
MULTI-TENANT COMMERCIAL
(9900 BROOKFORD STREET)MULTI-TENANT COMMERCIAL
(3228 NEVADA BOULEVARD)
ZEPSA INDUSTRIES
(1501 WESTINGHOUSE BOULEVARD)
MOTION INDUSTRIES
(11517 CORDAGE STREET)
CAROLINA OFFICE SOLUTIONS
(1301 WESTINGHOUSE BOULEVARD)\\hhfs01.harthickman.local\masterfiles\AAA-Master Projects\Childress Klein\CHK-006 Nevada Blvd and Cordage St\Brownfields Report\Figures\Figures.dwg, FIG 2, 5/22/2018 9:38:41 AM, zbarlow
CORD
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BROO
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VERSAR26
IW-18
IW-6
IW-7
IW-8
IW-9
IW-10
IW-11
IW-14
IW-5
IW-4
IW-3
IW-2
IW-1
IW-19
BG-1
BG-2
SB-4
SB-5
SB-1
SB-2SB-3
NADMW36
VERSAR22
NADMW65
NADMW38
NADMW66
NADMW57
NADMW58
NADMW37
SW-1/
SED-1
REVISION NO. 0
JOB NO. CHK-006
DATE: 5-22-18
FIGURE NO. 3
CHARLOTTE NAVAL AMMO DEPOT
BROWNFIELDS PROJECT NO. 22009-18-060
3100 NEVADA BOULEVARD
CHARLOTTE, NORTH CAROLINA
SAMPLE LOCATION MAP
LEGEND
SITE PROPERTY BOUNDARY
SURFACE WATER FEATURE
PROPOSED BUILDING FOOTPRINT
FORMER LOCATION OF
CHARLOTTE NAVAL AMMUNITION
DEPOT BUILDING 1-81
MONITORING WELL LOCATION2
BEDROCK MONITORING WELL
LOCATION2
ABANDONED MONITORING WELL
LOCATION2
INJECTION WELL LOCATION2
SURFACE WATER/ SEDIMENT
SAMPLE LOCATION (H&H; 5/2018)
SOIL BORING LOCATION
(H&H; 5/2018)
BACKGROUND SOIL SAMPLE
LOCATION (H&H; 5/2018)
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
NOTES:
1. AERIAL IMAGERY OBTAINED FROM MECKLENBURG CO. GIS
DEPARTMENT (2017).
2. MONITORING WELL & INJECTION WELL LOCATIONS ARE
APPROXIMATE AND BASED ON PIKA-PIRNIE JV, LLC'S
REMEDIAL ACTION & PERFORMANCE MONITORING REPORT
(MARCH 2017).NEVADA BOULEVARDS:\AAA-Master Projects\Childress Klein\CHK-006 Nevada Blvd and Cordage St\Brownfields Report\Figures\Figures.dwg, FIG 3, 5/22/2018 2:12:46 PM, zbarlow
CORD
A
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BROO
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F
O
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VERSAR26
IW-18
IW-6
IW-7
IW-8
IW-9
IW-10
IW-11
IW-14
IW-5
IW-4
IW-3
IW-2
IW-1
IW-19
BG-1
BG-2
SB-4
SB-5
SB-1
SB-2SB-3
NADMW36
VERSAR22
NADMW65
NADMW38
NADMW66
NADMW57
NADMW58
NADMW37
SW-1/
SED-1
REVISION NO. 0
JOB NO. CHK-006
DATE: 5-22-18
FIGURE NO. 4
CHARLOTTE NAVAL AMMO DEPOT
BROWNFIELDS PROJECT NO. 22009-18-060
3100 NEVADA BOULEVARD
CHARLOTTE, NORTH CAROLINA
MAP OF COMPOUND CONCENTRATIONS
ABOVE SCREENING LEVELS
LEGEND
SITE PROPERTY BOUNDARY
SURFACE WATER FEATURE
PROPOSED BUILDING FOOTPRINT
FORMER LOCATION OF
CHARLOTTE NAVAL AMMUNITION
DEPOT BUILDING 1-81
MONITORING WELL LOCATION2
BEDROCK MONITORING WELL
LOCATION2
ABANDONED MONITORING WELL
LOCATION2
INJECTION WELL LOCATION2
SURFACE WATER/ SEDIMENT
SAMPLE LOCATION (H&H; 5/2018)
SOIL BORING LOCATION
(H&H; 5/2018)
BACKGROUND SOIL SAMPLE
LOCATION (H&H; 5/2018)
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
NOTES:
1. AERIAL IMAGERY OBTAINED FROM MECKLENBURG CO. GIS
DEPARTMENT (2017).
2. MONITORING WELL & INJECTION WELL LOCATIONS ARE
APPROXIMATE AND BASED ON PIKA-PIRNIE JV, LLC'S
REMEDIAL ACTION & PERFORMANCE MONITORING REPORT
(MARCH 2017).
3. NO COMPOUNDS DETECTED ABOVE PSRGs IN SOIL SAMPLES
SB-2 & SB-5.
4. CONCENTRATIONS IN BOLD INDICATE CONCENTRATION
EXCEEDS NORTH CAROLINA DEPARTMENT OF
ENVIRONMENTAL QUALITY (NC DEQ) RESIDENTIAL
PRELIMINARY SOIL REMEDIATION GOALS (PSRGs) (FEBRUARY
2018).
5. J = COMPOUND WAS DETECTED ABOVE THE LABORATORY
METHOD DETECTION LIMIT, BUT BELOW THE LABORATORY
REPORTING LIMIT RESULTING IN AN ESTIMATED
CONCENTRATION.
6. * = CONCENTRATION REFERENCED IS FROM DUPLICATE
SAMPLE.
7. BGS = BELOW GROUND SURFACE
NEVADA BOULEVARD
SOIL
SB-1 (5/1/18)
DEPTH 0-2'
ARSENIC 1.5 mg/kg
CONSTITUENT CONCENTRATION
SAMPLE DEPTH
(FT BGS)
SAMPLE ID & DATE
SAMPLE TYPE
SOIL
SB-1 (5/1/18)
DEPTH 0-2'
ARSENIC 1.5 mg/kg
SOIL
SB-3 (5/1/18)
DEPTH 2-4'
ARSENIC 1.9 mg/kg
SOIL
SB-4 (5/1/18)
DEPTH 2-4'
ARSENIC 1.2 mg/kg
HEXAVALENT
CHROMIUM 0.54 J mg/kg
BACKGROUND SOIL
BG-1 (5/1/18)
DEPTH 0-2'
ARSENIC 1.9 mg/kg
BACKGROUND SOIL
BG-2 (5/1/18)
DEPTH 2-4'
ARSENIC 0.81 mg/kg
SEDIMENT
SED-1 (5/1/18)
ARSENIC 2.2*mg/kg
HEXAVALENT
CHROMIUM 0.85 J mg/kg
S:\AAA-Master Projects\Childress Klein\CHK-006 Nevada Blvd and Cordage St\Brownfields Report\Figures\Figures.dwg, FIG 4, 5/22/2018 2:12:42 PM, zbarlow
NEVADA BOULEVARD
CORDA
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BROO
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WESTINGHOUSE
BOULEVARDWILMAR BOULEVARDREVISION NO. 0
JOB NO. CHK-006
DATE: 5-22-18
FIGURE NO. 5
CHARLOTTE NAVAL AMMO DEPOT
BROWNFIELDS PROJECT NO. 22009-18-060
3100 NEVADA BOULEVARD
CHARLOTTE, NORTH CAROLINA
RECEPTOR SURVEY MAP
LEGEND
SITE PROPERTY BOUNDARY
SURFACE WATER FEATURE
ABOVEGROUND POWER LINE
UNDERGROUND GAS LINE
UNDERGROUND SANITARY
SEWER LINE
UNDERGROUND TELCO LINE
UNDERGROUND WATER LINE
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
1,500 FT BUFFER
\\hhfs01.harthickman.local\masterfiles\AAA-Master Projects\Childress Klein\CHK-006 Nevada Blvd and Cordage St\Brownfields Report\Figures\Receptor Survey.dwg, FIG 5, 5/22/2018 9:37:17 AM, zbarlow
Appendix A
Boring Logs
NOTES: Boring was precleared 5 ft bgs via Hand Auger. Soil sample was collected from 0-2 ft bgs and analyzed for RCRA metals and
Hexavalent Chromium
generated using LogitEasy.com
Client:
Project:
Address:
Childress Klein
CHK-006
3100 Nevada Boulevard, Charlotte,NC
BORING LOG
Boring No.
Page:
SB-1
1 of 1
Drilling Start Date:
Drilling End Date:
Drilling Company:
Drilling Method:
Drilling Equipment:
Driller:
Logged By:
05/01/2018
05/01/2018
CSI
Direct Push
Geoprobe 6610 DT
Rebecca Deal
Boring Depth (ft):
Boring Diameter (in):
Sampling Method(s):
DTW During Drilling (ft):
DTW After Drilling (ft):
Ground Surface Elev. (ft):
Location (X,Y):
9.0
Grab
DEPTH (ft)LITHOLOGYWATER LEVELBORINGCOMPLETIONCOLLECT
Sample TypeTimeBlow CountsRecovery (ft)SOIL/ROCK VISUAL DESCRIPTION
MEASURE
PID (ppm)Lab SampleDEPTH (ft)0
5
10
GR 13:45 0.00 (0') SILT (ML); trace clay, soft, moist, dark brown, topsoil
(0.25') CLAY (CL); trace fine gravel, trace fine-medium sand, trace mica, soft, moist,
dull orange and light brown
(1') CLAY (CL); medium stiff, moist, light brown
(2.5') Fine Sandy Silty Saprolite; medium dense, moist, light brown dull orange
dull red and black
(3') Fine Sandy Saprolite; medium dense, moist, light brown dull orange dull red and black
(8.5') Fine Sandy Saprolite; very dense, moist, light brown dull orange dull red and
black, PWR fragments
(9') Boring terminated, Refusal
24.8
24.7
20.9
19.9
17.9
15.9
14.6
0
5
10
NOTES: Boring was precleared 5 ft bgs via Hand Auger. Soil sample was collected from 2-4 ft bgs and analyzed for RCRA metals and
Hexavalent Chromium
generated using LogitEasy.com
Client:
Project:
Address:
Childress Klein
CHK-006
3100 Nevada Boulevard, Charlotte,NC
BORING LOG
Boring No.
Page:
SB-2
1 of 1
Drilling Start Date:
Drilling End Date:
Drilling Company:
Drilling Method:
Drilling Equipment:
Driller:
Logged By:
05/01/2018
05/01/2018
CSI
Direct Push
Geoprobe 6610 DT
Rebecca Deal
Boring Depth (ft):
Boring Diameter (in):
Sampling Method(s):
DTW During Drilling (ft):
DTW After Drilling (ft):
Ground Surface Elev. (ft):
Location (X,Y):
8.0
Grab
DEPTH (ft)LITHOLOGYWATER LEVELBORINGCOMPLETIONCOLLECT
Sample TypeTimeBlow CountsRecovery (ft)SOIL/ROCK VISUAL DESCRIPTION
MEASURE
PID (ppm)Lab SampleDEPTH (ft)0
5
10
GR 14:15 0.00
(0') Silty SAND (SM); loose, moist, reddish-brown, micaceous
(3') Poorly graded SAND (SP); trace silt, loose, moist, black and brown, micaceous
(5') Recore
(6') Poorly graded SAND (SP); trace silt, loose, dry, black and brown, micaceous
(7') Poorly graded SAND (SP); trace silt, dense, moist, black and brown, micaceous
(8') Boring terminated, Refusal
14.0
14.4
17.5
16.1
16.7
14.5
15.8
Dup-1
0
5
10
NOTES: Boring was precleared 5 ft bgs via Hand Auger. Soil sample was collected from 2-4 ft bgs and analyzed for RCRA metals and
Hexavalent Chromium
generated using LogitEasy.com
Client:
Project:
Address:
Childress Klein
CHK-006
3100 Nevada Boulevard, Charlotte,NC
BORING LOG
Boring No.
Page:
SB-3
1 of 1
Drilling Start Date:
Drilling End Date:
Drilling Company:
Drilling Method:
Drilling Equipment:
Driller:
Logged By:
05/01/2018
05/01/2018
CSI
Direct Push
Geoprobe 6610 DT
Rebecca Deal
Boring Depth (ft):
Boring Diameter (in):
Sampling Method(s):
DTW During Drilling (ft):
DTW After Drilling (ft):
Ground Surface Elev. (ft):
Location (X,Y):
13.0
Grab
DEPTH (ft)LITHOLOGYWATER LEVELBORINGCOMPLETIONCOLLECT
Sample TypeTimeBlow CountsRecovery (ft)SOIL/ROCK VISUAL DESCRIPTION
MEASURE
PID (ppm)Lab SampleDEPTH (ft)0
5
10
15
GR 12:45 0.00
(0') Sandy SILT (ML); soft, moist, brown
(0.2') Poorly graded Gravelly SAND (SPG); loose, moist, tan and white
(1.5') Sandy SILT (ML); hard, moist, brown and black, with Mn/Fe infill and oxidation
(4') No Recovery
(5') Recore
(6') Clayey SILT (MLCL); trace fine-medium sand, hard, moist, red and gray, with Mn/Fe
infill
(9') Silty SAND (SM); loose, moist, brown and gray
(10') Recore
(13') Boring terminated, Refusal
19.6
17.8
18.0
19.7
18.3
18.3
17.7
18.9
0
5
10
15
(11.5') Coarse Poorly Graded Sand (SP); dense, moist, red and black
NOTES: Boring was precleared 5 ft bgs via Hand Auger. Soil sample was taken from 2-4 ft bgs and analyzed for RCRA metals and Hexavalent
Chromium
generated using LogitEasy.com
Client:
Project:
Address:
Childress Klein
CHK-006
3100 Nevada Boulevard, Charlotte,NC
BORING LOG
Boring No.
Page:
SB-4
1 of 1
Drilling Start Date:
Drilling End Date:
Drilling Company:
Drilling Method:
Drilling Equipment:
Driller:
Logged By:
05/01/2018
05/01/2018
CSI
Direct Push
Geoprobe 6610 DT
Rebecca Deal
Boring Depth (ft):
Boring Diameter (in):
Sampling Method(s):
DTW During Drilling (ft):
DTW After Drilling (ft):
Ground Surface Elev. (ft):
Location (X,Y):
9.0
Grab
DEPTH (ft)LITHOLOGYWATER LEVELBORINGCOMPLETIONCOLLECT
Sample TypeTimeBlow CountsRecovery (ft)SOIL/ROCK VISUAL DESCRIPTION
MEASURE
PID (ppm)Lab SampleDEPTH (ft)0
5
10
GR 0.00
(0') Sandy SILT (ML); soft, moist, brown
(2') Sandy SILT (ML); soft, wet, brown
(4') No Recovery
(5') Sandy SILT (ML); soft, wet, brown
(6') Poorly graded SAND (SP); loose, wet, brown and black
(7') CLAY (CL); some fine-medium brown and black sand, hard, moist, grey
(8.5') Coarse Poorly graded SAND (SP); dense, moist, brown and black
(9') Boring terminated, Refusal
17.4
18.4
17.0
27.5
16.2
12.9
0
5
10
NOTES: Boring was precleared 5 ft bgs via Hand Auger. Soil sample was collected from 3-5 ft bgs and analyzed for RCRA metals and
Hexavalent Chromium
generated using LogitEasy.com
Client:
Project:
Address:
Childress Klein
CHK-006
3100 Nevada Boulevard, Charlotte,NC
BORING LOG
Boring No.
Page:
SB-5
1 of 1
Drilling Start Date:
Drilling End Date:
Drilling Company:
Drilling Method:
Drilling Equipment:
Driller:
Logged By:
05/01/2018
05/01/2018
CSI
Direct Push
Geoprobe 6610 DT
Rebecca Deal
Boring Depth (ft):
Boring Diameter (in):
Sampling Method(s):
DTW During Drilling (ft):
DTW After Drilling (ft):
Ground Surface Elev. (ft):
Location (X,Y):
10.0
Grab
DEPTH (ft)LITHOLOGYWATER LEVELBORINGCOMPLETIONCOLLECT
Sample TypeTimeBlow CountsRecovery (ft)SOIL/ROCK VISUAL DESCRIPTION
MEASURE
PID (ppm)Lab SampleDEPTH (ft)0
5
10
15
GR 0.00
(0') Sandy SILT (ML); soft, moist, brown, rooty
(1') Sandy SILT (ML); soft, moist, red and brown
(2') Silty SAND (SM); loose, moist, tan
(5') Silty SAND (SM); dense, moist, tan yellow and black, oxidized and micaceous
(10') Boring terminated, Refusal
13.8
12.2
5.2
13.8
19.8
14.4
14.9
18.7
0
5
10
15
NOTES: Soil sample was collected from 0-2 ft bgs and was analyzed for RCRA metals and Hexavalent Chromium
generated using LogitEasy.com
Client:
Project:
Address:
Childress Klein
CHK-006
3100 Nevada Boulevard, Charlotte,NC
BORING LOG
Boring No.
Page:
BG-1
1 of 1
Drilling Start Date:
Drilling End Date:
Drilling Company:
Drilling Method:
Drilling Equipment:
Driller:
Logged By:
5/1/18
5/1/18
CSI
Hand Auger
Hand Auger
Rebecca Deal
Boring Depth (ft):
Boring Diameter (in):
Sampling Method(s):
DTW During Drilling (ft):
DTW After Drilling (ft):
Ground Surface Elev. (ft):
Location (X,Y):
5.0
Grab
DEPTH (ft)LITHOLOGYWATER LEVELBORINGCOMPLETIONCOLLECT
Sample TypeTimeBlow CountsRecovery (ft)SOIL/ROCK VISUAL DESCRIPTION
MEASURE
PID (ppm)Lab SampleDEPTH (ft)0
5
10
GR 0.00 (0') SILT (ML); soft, moist, brown and dark brown, topsoil
(0.5') Fine to Medium Sandy CLAY (CL); trace silt, medium stiff, moist, brown
(1.5') SILT (ML); trace clay, medium stiff, moist, brown
(5') Boring terminated
20.7
23.0
20.3
18.7
18.7
0
5
10
NOTES: Soil sample was collected from 2-4 ft bgs and was analyzed for RCRA metals and Hexavalent Chromium
generated using LogitEasy.com
Client:
Project:
Address:
Childress Klein
CHK-006
3100 Nevada Boulevard, Charlotte,NC
BORING LOG
Boring No.
Page:
BG-2
1 of 1
Drilling Start Date:
Drilling End Date:
Drilling Company:
Drilling Method:
Drilling Equipment:
Driller:
Logged By:
05/01/2018
05/01/2018
CSI
Hand Auger
Hand Auger
Rebecca Deal
Boring Depth (ft):
Boring Diameter (in):
Sampling Method(s):
DTW During Drilling (ft):
DTW After Drilling (ft):
Ground Surface Elev. (ft):
Location (X,Y):
5.0
Grab
DEPTH (ft)LITHOLOGYWATER LEVELBORINGCOMPLETIONCOLLECT
Sample TypeTimeBlow CountsRecovery (ft)SOIL/ROCK VISUAL DESCRIPTION
MEASURE
PID (ppm)Lab SampleDEPTH (ft)0
5
10
GR 15:00 0.00
(0') Clayey SILT (MLCL); soft, moist, black and brown
(1') Silty CLAY (CLML); soft, moist, brown
(3') Silty SAND (SM); loose, moist, brown red and white
(5') Boring terminated
7.4
10.2
12.0
13.0
9.3
0
5
10
Appendix B
Laboratory Analytical Reports
Page 1 of 123
Table of Contents
Table of Contents
Sample Summary 4
Case Narrative 6
Sample Results 11
18E0078-01 11
18E0078-02 18
18E0078-03 25
18E0078-04 32
18E0078-05 39
18E0078-06 46
18E0078-07 53
18E0078-08 55
18E0078-09 57
18E0078-10 63
18E0078-11 69
18E0078-12 75
Sample Preparation Information 81
QC Data 84
Volatile Organic Compounds by GC/MS 84
B202478 84
B202553 88
Semivolatile Organic Compounds by GC/MS 94
B202466 94
B202572 98
Polychlorinated Biphenyls By GC/ECD 104
B202331 104
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Table of Contents (continued)
Metals Analyses (Total) 105
B202499 105
B202576 105
B202716 105
B202724 106
Conventional Chemistry Parameters by EPA/APHA/SW-846 Methods (Total) 107
B202397 107
B202417 107
B202578 107
Dual Column RPD Report 108
Flag/Qualifier Summary 110
Certifications 111
Chain of Custody/Sample Receipt 120
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Appendix C DEQ Brownfields Receptor Survey Form
North Carolina Department of Environmental Quality
Division of Waste Management
Brownfields Program
Site:Charlotte Naval Ammo Depot
Address:3100 Nevada Boulevard
City:Charlotte
County:Mecklenburg
Brownfields Project Number:22009-18-060
Property and Building Characteristics
a. Provide occupancy and use information.
Not applicable. On-site building was demolished in the 1980s.
Not applicable. On-site building was demolished in the 1980s.
c. Describe the foundation construction. Include details on type, floor construction, and depth below grade.
Not applicable. On-site building was demolished in the 1980s.
Not applicable. On-site building was demolished in the 1980s.
e. Are any subslab ventilation systems or moisture barriers in place? If so, please provide details.
Not applicable. On-site building was demolished in the 1980s.
d. Describe the HVAC system in the building. Include available details on type, equipment location, source of air return, and
design considerations (e.g. positive pressure?).
0
0
Light Industrial% of property that is grassed areas (unpaved)
% of property that is agricultural crops
% of property that is paved
Size of Property (acres)
BROWNFIELDS PROPERTY RECEPTOR SURVEY
This form was created to clarify and simplify preparing a receptor survey for a brownfield site. Please provide the information
requested below. Distances are measured from the site property boundary unless otherwise indicated by the DEQ Brownfield’s
Project Manager (PM).
Current Usage Proposed UsageSurface Conditions
% of property that is wooded/brush
If an existing building is on-site, please respond to the following. Information can be provided on additional sheets as needed. If
numerous buildings are on-site, consult with your PM as only information on specific buildings may be needed.
b. Describe the construction of the building including materials (e.g. wood frame, block), type and size of openings (e.g.
windows, bay doors), and height (number of stories).
% of property that is covered by buildings
17
100
0
0
Rev. 09/2015 Page 1 of 3
North Carolina Department of Environmental Quality
Division of Waste Management
Brownfields Program
Surrounding Property Land Use
North
East
South
West
N ----
N ----
UNK ----
Utilities
Is there a septic system on-site? (Y or N) N
Please provide the utility providers for the subject property
a. Natural Gas Piedmont Natural Gas (underground)
b. Sewer Charlotte-Mecklenburg Utility Department (Charlotte Water) (underground)
c. Electricity Duke Energy (above ground & underground)
d. Other fiber optics/communication (underground)
For surrounding properties, please complete the following table with available information.
Y 0 ON-SITE
Y 30 S & W
UNK ----
Y 0 ON-SITE
Y 0 ON-SITE
Y <5 S
N ----
Is there a residence within 1,000 ft of the Property?
Specific Land Uses of Interest Y/N *
Distance
(ft)
Is a sanitary sewer within 100 ft of the Property boundary?
Unknown
Unknown
Unknown
Heavy and Light Industrial
Heavy Industrial
Heavy Industrial
Heavy Industrial
For the subject property, please provide a map of known buried utilities. If available, include depth to top, construction
material, and diameter of the utilities. In addition, please provide the following information on utility providers. If additional
assessment is required, the public utility locators should be contacted. This information can then be added to a site map.
Y/N *
Unknown
Please provide information on the following land uses in the vicinity of the subject site, including a map of the surrounding
areas. If specific receptors are present, please provide addresses of the facilities.
DirectionUtility/Potential Receptor
Is a buried electrical cable main within 100 ft of Property boundary?
Is a storm water pipe within 100 ft of the Property boundary?
* If yes, please provide a map or detailed information (distance, direction, depth) of the utility in correlation with the subject
property. - See Figure 5
Is there a basement within 1,000 ft of the Property
Distance
(ft)Address
--
Zoning/Land Use
--
--
Proposed Usage Current Use/Occupant
Is a school or daycare center within 1,000 ft of the Property?
Is a water line main within 100 ft of Property boundary?
Is a natural gas line main within 100 ft of the Property boundary?
Is a buried telephone/ cable main within 100 ft of the Property boundary?
Is a septic system leach field within 500 ft of the Property boundary?
Direction
Rev. 09/2015 Page 2 of 3
North Carolina Department of Environmental Quality
Division of Waste Management
Brownfields Program
Water Supply
What is the potable water supply for the property? Public X Private ______
Charlotte Water
N ---
N ---
N ---
Surface Water & Wetlands
The bottom of the surface water features are silt and/or sand
with small sections of reinforced concrete culverts at road
crossings.
--
Two potential wetlands areas are present at the Site.
b. List the uses of the water body.
c. What is the source of the water for the water body?
d. What is the nature of the bottom of the water body
(e.g., rocky or concrete bottom, drainage ways or
impoundments)
If no on-site surface water features, what is the nearest
surface water body?
Are there any wetlands present on the property? If no
wetlands on-site, are wetlands suspected on adjoining
properties?
a. Is the water body naturally developed or man-made?Two of three surface water features at the Site appear to be
naturally developed. The surface water feature flowing along
Nevada Boulevard appears to be man-made.
Surface water features at the Site are used for
storm water drainage.
The source of the water bodies at the Site appears
to be storm water run-off.
Is a public water supply well within 1 mile of the Property boundary?
Is a private water supply well within 1,500 ft of the Property boundary?
Is an irrigation well within 1,500 ft of the Property boundary?
Response/Comments
The purpose of this section is to provide information on the presence of surface waters and/or wetlands on, or in the vicinity of
the Property.
Three unnamed intermittent surface water bodies are present at
the Site. However, at the time of the Site visit, two of three
surface water bodies were dry or contained limited water.
Are there surface water features on the property? (If yes,
please complete a. to d.)
If Private, please provide details of the water supply source (i.e. well location, well construction, etc). If public, please include
the water providers name.
Distance
(ft)Direction
Provide Information regarding Surface Water and Wetlands
Y/NWater Supply Wells
Please provide the following information regarding water supply wells in the vicinity of the Property. At a minimum, a
windshield survey within 1,500 ft of the property boundaries should be completed to determine if water supply or irrigation
wells may be present. Information from applicable databases can and should be utilized; however, should not be utilized in
lieu of the windshield survey. If multiple wells are present within the requested radius, please provide a map of the well
locations. If needed, please attach a separate table to list all wells. Please note, the PM may opt for a more extensive water
supply well survey if needed.
The purpose of this section is to provide information on the water supply for the site and surrounding areas.
Address
Rev. 09/2015 Page 3 of 3