HomeMy WebLinkAbout16022 CHT Brownfields Assessment Report 20150619
Brownfields Assessment Report
Former CHT Facility
5046 Old Pineville Rd.
Charlotte, North Carolina
Brownfields Project ID 16022‐12‐60
June 19, 2015
H&H Job No. FDP-035
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Brownfields Assessment Report
Former CHT Facility
5046 Old Pineville Rd.
Charlotte, North Carolina H&H Job FDP-035
Table of Contents
Section Page No.
1.0 Introduction and Background ........................................................................................... 1
1.1 Brief Site History .................................................................................................................. 1
1.2 Previous Assessment and Remedial Activities ..................................................................... 2
1.3 Brownfields .......................................................................................................................... 4
2.0 Vapor Intrusion Assessment .............................................................................................. 5
2.1 Sub-Slab Soil Vapor Assessment ......................................................................................... 5
2.2 Sub-Slab Soil Results ........................................................................................................... 7
2.3 Indoor Air Sampling ............................................................................................................. 7
2.4 Indoor and Background Air Results ...................................................................................... 9
3.0 Summary and Conclusions................................................................................................... 10
Figures
Figure 1 Site Location Map
Figure 2 Sub-Slab Soil Vapor Sample Locations
Figure 3 Indoor and Background Air Sample Locations
Tables
Table 1 Summary of Sub-Slab Soil Vapor Analytical Data
Table 2 Summary of Indoor Air Sample Field Data
Table 3 Summary of Indoor and Background Air Analytical Data
Appendices
Appendix A Laboratory Analytical Report
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Brownfields Assessment Report
Former CHT Facility
5046 Old Pineville Rd.
Charlotte, North Carolina H&H Job FDP-035
1.0 Introduction and Background
Hart & Hickman, PC (H&H) has prepared this Brownfields Assessment Report for the former
CHT R. Beitlich (CHT) facility located at 5046 Old Pineville Rd. in Charlotte, North Carolina.
A site location map is included as Figure 1. The facility consists of an approximate 73,000
square foot former manufacturing and warehousing facility located on approximately 4.15 acres
of land. The facility is currently occupied by several tenants. The northwestern portion of the
building is occupied by Rolf Koerner for the storage and distribution of industrial screens, and
the southwestern part of the building is occupied by South Charlotte Cross-Fit as a fitness
training facility. The northeastern portion of the building is vacant but is in the process of being
upfitted for use as a micro-brewery. The southeastern portion of the building was most recently
occupied by a pool construction contractor but is currently vacant. A site plan is included as
Figure 2.
1.1 Brief Site History
CHT (formerly known as Catawba Charlab) previously manufactured textile dyes, additives, and
various chemicals at the site until 2010. Compounds used in the processes included primarily
aromatics, petroleum-related hydrocarbons, and chloroaromatics. Raw materials were mixed,
blended, and reacted into finished products primarily for use by the textile industry. Process
wastewater was discharged to the sanitary sewer.
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1.2 Previous Assessment and Remedial Activities
There are two identified areas of soil and/or ground water impact at the facility. These two areas
are referred to as 1) the former underground storage tank (UST) area, and 2) the M-2 Warehouse
area. Each of these areas is discussed below.
Former UST Area
The former UST Area is located on the south side of the building in a gravel covered area along
Rountree Rd. as indicated in Figure 2. Eleven underground storage tanks (USTs) were removed
from this area in May and June 1991. Both petroleum and non-petroleum products were stored
in these USTs. The former contents of the USTs included aromatic 150, isopropyl alcohol,
varsol, paraffin solvent, mineral seal oil, xylene, butyl cellosolve, and fuel oil. Impacted soil was
noted, and approximately 550 tons of impacted soil were removed at the time of UST closure.
The presence of impacts in the area of the USTs was reported to DENR on May 17, 1991 and
subsequent soil and ground water investigation was conducted. A Comprehensive Site
Assessment (CSA) was submitted to the DENR UST Section in March 2003. The results
indicated that shallow ground water flow at the site is generally toward the west and north-
northwest. The results of soil sampling conducted indicated that there were no residual soil
impacts present in the UST area above DENR UST Section Maximum Soil Contaminant
Concentrations (MSCCs). The results of the ground water analyses indicated the presence of a
small area of groundwater impacts in the western portion of the former UST area. The primary
compounds of concern are xylenes and ethylbenzene.
A summary of historical shallow ground water analytical data for the UST area wells is provided
in Table 1. The most recent results indicate that only well MW-2 contained concentrations of
ethylbenzene and xylenes above groundwater standards and the DENR Inactive Hazardous Sites
Branch (IHSB) non-residential vapor intrusion screening levels. In 2003, concentrations of these
compounds were also detected above the vapor intrusion screening levels in well MW-10 located
downgradient of MW-2. However, concentrations were not detected above screening levels
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when MW-10 was sampled in 2008.
M-2 Warehouse Area
The M-2 Warehouse was located in the northeast portion of the building. Prior to construction of
the M-2 Warehouse, this area of the site contained a former above ground chemical reactor and
above ground petroleum storage vessels. Potential soil impacts in the area of the M-2 Warehouse
area were discovered during geotechnical sampling conducted prior to construction of the M-2
Warehouse in 1992. Subsequent soil sampling conducted in 1992 indicated the presence of total
petroleum hydrocarbons (TPH).
A monitoring well (MW-4) was installed prior to construction of the M-2 Warehouse and a
ground water sample was collected in February 1992. The ground water sample contained
volatile organic compounds (VOCs) and semi-volatile organic compounds (SVOC) at
concentrations above North Carolina ground water standards. Construction of the M-2
Warehouse was completed in 1992. In order to allow for construction of the M-2 Warehouse
without delay, the sub-grade components of a soil vapor extraction (SVE) system consisting of
two trenches and perforated piping were installed by Four Seasons Industrial Services beneath
the M-2 Warehouse to be used in potential future soil remedial activities, if warranted.
Monitoring well MW-4 was abandoned during construction of the M-2 Warehouse and
additional wells (MW-5 and MW-6) were installed in the early 1990s.
H&H conducted assessment activities between May 2002 and July 2003 which are documented
in a Comprehensive Site Assessment (CSA) for the M-2 Warehouse dated July 2003.
Specifically, soil samples were collected and analyzed during the installation of monitoring well
MW-4A (the replacement well for MW-4), and ten soil borings were advanced below the
warehouse The results indicated that 1,4-dichlorobenzene and 1,2,4-trichlorobenzene were
detected in soil in one boring above the DENR IHSB commercial/industrial preliminary soil
remediation goals.
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The results of the ground water analyses indicate the presence of a small area of ground water
impact below and just north of the M-2 Warehouse. In August 2006, the DENR Aquifer
Protection Section (APS) requested the submittal of a Corrective Action Plan (CAP) to address
the identified soil and ground water impacts in the area of the M-2 Warehouse. The CAP was
submitted to DENR in November 2006. The CAP included active remediation of soil below the
M-2 Warehouse using the existing vapor extraction trench and natural attenuation of ground
water impacts. In September 2009, CHT connected the extraction piping under the M-2
Warehouse to a SVE system. The SVE system was operated until the end of 2010 when it was
shut down concurrently with shut down of the site buildings.
Compounds have been detected above North Carolina groundwater standards and the IHSB
vapor intrusion screening levels in well MW-4A which is located below the M-2 Warehouse.
The compounds which have been detected above the vapor intrusion screening levels are
benzene, chlorobenzene, 1,4-dichlorobenzene, ethylbenzene, and 1,2,4-trichlorobenzene.
1.3 Brownfields
In 2013, Old Pineville Investments, LLC submitted an eligibility application for entry into the
Brownfields program, and the DENR Brownfields program subsequently indicated that the
project was eligible. As part of the Brownfields process, DENR requested a vapor intrusion
assessment be conducted at the facility based on the historical groundwater data and soil impacts
identified onsite. A Brownfields Assessment Work Plan dated December 13, 2013 was
submitted to DENR and was subsequently approved on January 13, 2014. The following
sections present the methods, results, and conclusions of the vapor intrusion assessment.
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2.0 Vapor Intrusion Assessment
The assessment activities included sub-slab soil vapor and, based upon the subslab soil vapor
sampling, indoor air sampling. Sub-slab soil vapor sampling was conducted in January 2014.
Based upon the results of the sub-slab soil vapor sampling and in accordance with the approved
Work Plan, H&H proposed the locations and analytes for indoor air samples to DENR in May
2014. DENR subsequently approved the indoor air sample locations with modification of the
location and number of samples. The indoor air samples were collected in December 2014 after
allowing a tenant in the southwestern portion of the site to vacate the space. The methods and
results of the sub-slab soil vapor and indoor air sampling are described below.
2.1 Sub-Slab Soil Vapor Assessment
On January 23 and 28, 2014, H&H collected six sub-slab soil vapor samples at the site to assess
the potential for vapor intrusion into the site building from underlying soil and/or groundwater
impacts. The sub-slab soil vapor sample locations are indicated in Figure 2 and included the
following:
• One in the southwestern portion of the building (SSVP-1)
• One in the warehouse area in the south-central portion of the building near MW-2 and
downgradient of the UST area (SSVP-2)
• One in the warehouse area in south-central portion of the building near the UST area
(SSVP-3)
• One in the office area in the southeastern part of the building (SSVP-4)
• Two in the area of the M-2 Warehouse in the northwestern and northeastern portions of
the building (SSVP-5 and SSVP-6)
Note that all of the samples were collected on January 23 except sample SSVP-6 which was
collected on January 28 because the sample canister for that location was received faulty from the
laboratory during the initial sampling event. The locations of the sub-slab soil vapor samples are
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indicated in Figure 2.
H&H installed each sub-slab soil vapor monitoring point (VMP) by drilling through the concrete
floor utilizing a concrete hammer drill with an approximate 0.75-inch diameter bit. Through
each of the drilled holes, H&H installed an approximate 0.625-inch diameter stainless steel probe
with approximate 2-inch long bottom screen point. The probes were installed through the gravel
beneath the concrete slab and seated in the underlying soil so that the soil gas probe screen is
present in both the soil and overlying gravel.
Each point was connected to the surface with Teflon tubing and sealed below the surface of the
concrete slab using hydrated bentonite. Prior to sampling, a field leak check was conducted at
each VMP by constructing a shroud around the sampling point and saturating the air within the
shroud with helium gas. A helium gas detector was then used to determine that the concentration
of He in the shroud was a minimum of 80%. Using a syringe, a sample was collected from the
VMP and purged into a Tedlar® bag outside of the shroud. The helium gas detector was then
used to measure helium concentrations in the Tedlar® bag and insure that any helium detected in
the bag was no more than 5% of the helium concentration detected in the shroud.
Following a successful field leak check, vapor samples were collected into six-liter Summa
canisters for laboratory analysis. The Summa canisters were allowed to fill slowly using an
airflow regulator over a period of approximately one hour per point. During sampling at each
location, a helium tracer gas atmosphere was maintained at the surface of each soil vapor point to
demonstrate that there was not short circuiting to the surface during the test. The helium gas
atmosphere was created by saturating the air within the shroud at the sample location with helium
gas. To ensure a sufficient helium atmosphere was maintained during sampling, H&H monitored
helium levels within the shroud and added helium as needed to maintain an 80 to 90% helium
atmosphere.
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As part of the testing, H&H also collected measurements of ambient temperature at the
beginning, middle, and end of the sampling day.
Once the soil vapor samples were collected, the canisters were shipped to ConTest Laboratories
for analysis of VOCs by EPA Method TO-15 and for helium by EPA Method 3C. After
collection, all of the points were abandoned and the surfaces were patched.
2.2 Sub-Slab Soil Results
The results of analysis of the sub-slab soil vapor samples are summarized in Table 1, and the
laboratory analytical data are provided in Appendix A. The data were compared to the DENR
Division of Waste Management (DWM) Non-Residential Soil Gas Screening Levels (SGSLs).
The results indicated that concentrations of ethylbenzene (380,000 µg/m3), xylenes 634,000
µg/m3), PCE (66,000 µg/m3), and TCE (67,000 µg/m3) were detected above the DENR Non-
Residential SGSLs in sub-slab soil gas sample SSVP-3 collected from the south-central area of
the warehouse (Figure 2). Cis-1,2-DCE was also detected at a relatively high concentration
(190,000 µg/m3), although there is no SGSL for cis-1,2-DCE. PCE, TCE, cis-1,2-DCE,
ethylbenzene, and/or xylenes were also detected in the remaining sub-slab soil gas samples
(SSVP-1, SSVP-2, SSVP-4, SSVP-5, and SSVP-6) but at levels well below their DMW Non-
Residential SGSLs. Other VOCs were also detected in the sub-slab soil gas samples, but were
also well below their respective DMW Non-Residential SGSLs.
Helium was not detected in any of the sub-slab soil vapor samples indicating good probe
integrity during sample collection.
2.3 Indoor Air Sampling
Following collection and receipt of the sub-slab soil vapor sampling data, H&H presented the
results to DENR, and DENR requested that four indoor air samples be collected from the south-
central portion of the building in the area of sub-slab sample SSVP-3. The samples were
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collected on December 12, 2014 after the tenant that was in that portion of the building had
moved out. The locations of the indoor air samples are shown on Figure 3.
The indoor air samples were collected with 6-liter Summa canisters. The Summa canister was
connected to an airflow regulator and a 3 ft long sampling cane. The typical height of a Summa
canister with an attached airflow regulator is approximately 2 ft above grade and, with the
additional 3-foot long sampling cane, the sample intake point is approximately 5 ft above grade
(typical breathing zone height).
Prior to sample collection, H&H measured the wind direction and selected an exterior
background location located upgradient of the site building. The location of the background
sample is also shown on Figure 3 and was located in the northwest portion of the site. The
background location Summa canister was also fitted with a regulator and sampling cane so that
the sample height is approximately 5 ft above ground level.
Following set-up of the background sample canister, the indoor and background sample valves
were opened and the samples were collected over an approximate 8-hour period. As part of the
sampling effort, H&H measured the air pressure differential between outside air and the interior
sample locations near the start, middle, and end of the 8-hour sampling period. In addition,
exterior wind speed, exterior wind direction, and indoor/outdoor temperature were recorded near
the start, middle, and end of the sampling period. The pressure and weather data recorded during
the indoor air sampling activities is included on Table 2.
Once the indoor air samples were collected, the canisters were shipped to ConTest Laboratories
for analysis of the following VOCs by EPA Method TO-15: PCE, TCE, cis-1,2-dichloroethene
(cis-1,2-DCE), trans-1,2-dichloroethene (trans-1,2-DCE), 1,1-dichlorothene (1,1-DCE), vinyl
chloride (VC), ethylbenzene, and xylenes.
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2.4 Indoor and Background Air Results
The indoor/outdoor air temperature, wind direction, and differential pressure measurements are
summarized in Table 2. As indicated, temperatures were in the range of 40 F to 50 F during the
sample event, and wind was generally out of the southwest and light (2-4 mph). Note that
because the site building is located in the far southwestern portion of the site, the background
sample was collected from the northwestern portion of the site so as not to be close to the
building. The results of differential pressure measurements indicated that there was a slightly
positive differential pressure between outside air and the building. No precipitation occurred
during the sampling event.
A summary of the indoor and background air sample results are summarized in Table 3, and the
laboratory analytical data are provided in Appendix A. Concentrations of PCE, TCE,
ethylbenzene, and/or xylenes were detected in each of the indoor and background air samples.
However, all concentrations detected were well below the DWM Non-Residential Indoor Air
Screening Levels. In addition, concentrations of ethylbenzene and total xylenes detected in the
background air sample were similar to the concentrations detected in the indoor air samples.
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3.0 Summary and Conclusions
H&H completed Brownfields assessment activities at the former CHT facility located at 5046
Old Pineville Rd. in Charlotte, North Carolina. The assessment activities included the collection
of six sub-slab soil vapor samples and the subsequent collection of four indoor air samples. The
result of the sub-slab soil vapor samples indicated the presence of PCE, TCE, ethylbenzene, and
total xylenes above the DWM Non-Residential SGSLs in sample SSVP-3 located in the south-
central portion of the building. Based on the sub-slab soil vapor results, DENR requested the
collection of four indoor air samples in the south-central portion of the building. The results of
analysis of the indoor air samples indicated the presence of very low concentrations of
compounds well below the DWM Non-Residential IASLs. Based on the results of the
assessment activities, vapor intrusion does not appear to be a concern for the site building and
H&H does not recommend further evaluation of the vapor intrusion pathway or vapor intrusion
mitigation.
Table 1 (Page 1 of 6)
Summary of Sub-Slab Soil Gas Analytical Data
Former CHT Facility
Charlotte, North Carolina
H&H Job No. FDP-035
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Table 1 (Page 1 of 6)
Hart & Hickman, PCEthylbenzeneTetrachloroethene (PCE)Trichloroethene (TCE)Total XylenesAcetoneBenzeneBenzyl ChlorideSSVP-1 Southwestern Building (Cross-Fit)01/23/14 TO-15 34 24 5.7 60.6 140 12 <0.52
SSVP-2 South-Central Warehouse (Vacant)01/23/14 TO-15 1.3 670 0.23J 4.10 60 2.7 0.11J
SSVP-3 South-Central Warehouse (Vacant)01/23/14 TO-15 380,000 66,000 67,000 634,000 <14,000 <480 <780
SSVP-4 Southeast Offices 01/23/14 TO-15 0.63 3.2 <0.54 3.5 59 0.20J <0.52
SSVP-5 Northwest Warehouse (Rolf-Kerner)01/23/14 TO-15 0.51 0.81 <0.54 2.01 29 0.92 <0.52
SSVP-6 Northeast Warehouse (Vacant; Future Brewery)01/28/14 TO-15 0.56 110 1.0 2.17 26 0.90 <0.52
4,910 3,500 175 8,760 2,720,000 1,570 87.6
Notes
Bold and orange highlight indicates concentration exceeds Division of Waste Management Sub-slab and Exterior Soil Gas Screening Levels (June 2014).
Only compounds detected in at least one sample shown
DMW = Division of Waste Management
NS = Not Specified
µg/m3 = micrograms per cubic meter
* = Screening level for 1,3,5-Trimethylbenzene used as a surrogate for screening level for 1,2,4-Trimethylbenzene
J = Value indicates compound detected but below the reporting limit; result is an estimated concentration
µg/m3
DWM Non-Residential Soil Gas Screening LevelSample IDSample LocationSampling Date Analytical Method
Table 1 (Page 2 of 6)
Summary of Sub-Slab Soil Gas Analytical Data
Former CHT Facility
Charlotte, North Carolina
H&H Job No. FDP-035
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Table 1 (Page 2 of 6)
Hart & Hickman, PC
SSVP-1 Southwestern Building (Cross-Fit)01/23/14 TO-15
SSVP-2 South-Central Warehouse (Vacant)01/23/14 TO-15
SSVP-3 South-Central Warehouse (Vacant)01/23/14 TO-15
SSVP-4 Southeast Offices 01/23/14 TO-15
SSVP-5 Northwest Warehouse (Rolf-Kerner)01/23/14 TO-15
SSVP-6 Northeast Warehouse (Vacant; Future Brewery)01/28/14 TO-15
Notes
Bold and orange highlight indicates concentration exceeds Division of Waste Management Sub
Only compounds detected in at least one sample shown
DMW = Division of Waste Management
NS = Not Specified
µg/m3 = micrograms per cubic meter
* = Screening level for 1,3,5-Trimethylbenzene used as a surrogate for screening level for 1,2,4
J = Value indicates compound detected but below the reporting limit; result is an estimated con
DWM Non-Residential Soil Gas Screening LevelSample IDSample LocationSampling Date Analytical Method1,3-ButadieneMethyl ethyl ketone (MEK) (2-Butanone)Carbon disulfideCarbon TetrachlorideChlorobenzeneChloroethaneChloroform<0.22 4.7J 2.6J <0.63 0.95 <0.26 <0.49
<0.22 5.4J 2.0J <0.63 <0.46 <0.26 <0.49
<330 <18,000 <4,700 <940 <690 <400 <730
<0.22 23 2.5J 0.33J <0.46 <0.26 <0.49
<0.22 2.6J 1.1J 0.38J <0.46 <0.26 0.20J
1.1 3.6J 2.9J 0.19J <0.46 <0.26 0.30J
175 438,000 61,300 2,040 4,380 NS 533
µg/m3
Table 1 (Page 3 of 6)
Summary of Sub-Slab Soil Gas Analytical Data
Former CHT Facility
Charlotte, North Carolina
H&H Job No. FDP-035
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Table 1 (Page 3 of 6)
Hart & Hickman, PC
SSVP-1 Southwestern Building (Cross-Fit)01/23/14 TO-15
SSVP-2 South-Central Warehouse (Vacant)01/23/14 TO-15
SSVP-3 South-Central Warehouse (Vacant)01/23/14 TO-15
SSVP-4 Southeast Offices 01/23/14 TO-15
SSVP-5 Northwest Warehouse (Rolf-Kerner)01/23/14 TO-15
SSVP-6 Northeast Warehouse (Vacant; Future Brewery)01/28/14 TO-15
Notes
Bold and orange highlight indicates concentration exceeds Division of Waste Management Sub
Only compounds detected in at least one sample shown
DMW = Division of Waste Management
NS = Not Specified
µg/m3 = micrograms per cubic meter
* = Screening level for 1,3,5-Trimethylbenzene used as a surrogate for screening level for 1,2,4
J = Value indicates compound detected but below the reporting limit; result is an estimated con
DWM Non-Residential Soil Gas Screening LevelSample IDSample LocationSampling Date Analytical MethodMethyl chloride (Chloromethane)Cyclohexane1,2-Dichlorobenzene1,4-DichlorobenzeneDichlorodifluoromethane (Freon 12)1,1-Dichloroethene (1,1-DCE)cis-1,2-Dichloroethene (cis-1,2-DCE)0.52 1.3 0.47J 0.60 2.5 0.13J 17
<0.41 0.98 0.41J 0.20J 1.6 <0.40 0.24J
<620 <520 <900 <900 <740 <590 190,000
<0.41 <0.34 0.49J 0.16J 2.2 <0.40 <0.40
0.21J <0.34 0.24J <0.60 2.1 <0.40 <0.40
0.36J <0.34 <0.60 <0.60 1.8 <0.40 <0.40
7,880 526,000 17,500 1,110 8,760 17,500 NS
µg/m3
Table 1 (Page 4 of 6)
Summary of Sub-Slab Soil Gas Analytical Data
Former CHT Facility
Charlotte, North Carolina
H&H Job No. FDP-035
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Table 1 (Page 4 of 6)
Hart & Hickman, PC
SSVP-1 Southwestern Building (Cross-Fit)01/23/14 TO-15
SSVP-2 South-Central Warehouse (Vacant)01/23/14 TO-15
SSVP-3 South-Central Warehouse (Vacant)01/23/14 TO-15
SSVP-4 Southeast Offices 01/23/14 TO-15
SSVP-5 Northwest Warehouse (Rolf-Kerner)01/23/14 TO-15
SSVP-6 Northeast Warehouse (Vacant; Future Brewery)01/28/14 TO-15
Notes
Bold and orange highlight indicates concentration exceeds Division of Waste Management Sub
Only compounds detected in at least one sample shown
DMW = Division of Waste Management
NS = Not Specified
µg/m3 = micrograms per cubic meter
* = Screening level for 1,3,5-Trimethylbenzene used as a surrogate for screening level for 1,2,4
J = Value indicates compound detected but below the reporting limit; result is an estimated con
DWM Non-Residential Soil Gas Screening LevelSample IDSample LocationSampling Date Analytical Methodtrans-1.2-Dichloroethene(trans-1,2-DCE)EthanolEthyl Acetate4-EthyltolueneHeptaneHexane2-Hexanone (MBK)0.38J 170 <0.36 0.26J 1.1 4.7J 0.89
<0.40 180 0.28J 0.15J 0.40J 2.6J 0.85
<590 46,000 <540 <740 <610 <21,000 <610
<0.40 190 <0.36 0.18J 0.27J 3.2J 0.89
<0.40 240 1.2 0.75 <0.41 7.7J 0.50
<0.40 5.9J <0.36 0.15J 1.1 6.9J 0.91
5,260 NS 6,130 NS NS 61,300 2,630
µg/m3
Table 1 (Page 5 of 6)
Summary of Sub-Slab Soil Gas Analytical Data
Former CHT Facility
Charlotte, North Carolina
H&H Job No. FDP-035
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Table 1 (Page 5 of 6)
Hart & Hickman, PC
SSVP-1 Southwestern Building (Cross-Fit)01/23/14 TO-15
SSVP-2 South-Central Warehouse (Vacant)01/23/14 TO-15
SSVP-3 South-Central Warehouse (Vacant)01/23/14 TO-15
SSVP-4 Southeast Offices 01/23/14 TO-15
SSVP-5 Northwest Warehouse (Rolf-Kerner)01/23/14 TO-15
SSVP-6 Northeast Warehouse (Vacant; Future Brewery)01/28/14 TO-15
Notes
Bold and orange highlight indicates concentration exceeds Division of Waste Management Sub
Only compounds detected in at least one sample shown
DMW = Division of Waste Management
NS = Not Specified
µg/m3 = micrograms per cubic meter
* = Screening level for 1,3,5-Trimethylbenzene used as a surrogate for screening level for 1,2,4
J = Value indicates compound detected but below the reporting limit; result is an estimated con
DWM Non-Residential Soil Gas Screening LevelSample IDSample LocationSampling Date Analytical MethodIsopropanolMethyl tert buytl ethene (MTBE)Methylene ChlorideMethyl Isobutyl Ketone (4-methyl-2-pentanone)NaphthalenePropylene (Propene)Styrene4.0J 0.34J 4.2 19 0.52 4.8J 0.32J
3.7J 0.12J 3.0J 1.5 <0.52 5.5 0.12
<15,000 <540 <5,200 <610 <790 6,800 <640
35 <0.36 6.8 0.97 0.34J 1.1J 0.094J
9.1J <0.36 19 0.44 <0.52 1.4J 0.18J
2.6J <0.36 16 1.2 <0.52 8.5 0.16J
NS 47,200 52,600 263,000 263 263,000 87,600
µg/m3
Table 1 (Page 6 of 6)
Summary of Sub-Slab Soil Gas Analytical Data
Former CHT Facility
Charlotte, North Carolina
H&H Job No. FDP-035
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Table 1 (Page 6 of 6)
Hart & Hickman, PC
SSVP-1 Southwestern Building (Cross-Fit)01/23/14 TO-15
SSVP-2 South-Central Warehouse (Vacant)01/23/14 TO-15
SSVP-3 South-Central Warehouse (Vacant)01/23/14 TO-15
SSVP-4 Southeast Offices 01/23/14 TO-15
SSVP-5 Northwest Warehouse (Rolf-Kerner)01/23/14 TO-15
SSVP-6 Northeast Warehouse (Vacant; Future Brewery)01/28/14 TO-15
Notes
Bold and orange highlight indicates concentration exceeds Division of Waste Management Sub
Only compounds detected in at least one sample shown
DMW = Division of Waste Management
NS = Not Specified
µg/m3 = micrograms per cubic meter
* = Screening level for 1,3,5-Trimethylbenzene used as a surrogate for screening level for 1,2,4
J = Value indicates compound detected but below the reporting limit; result is an estimated con
DWM Non-Residential Soil Gas Screening LevelSample IDSample LocationSampling Date Analytical MethodTetrahydrofuranToluene1,1,1-TrichloroethaneTrichlorofluoromethane (Freon 11)1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)1,2,4-Trimethylbenzene1,3,5-Trimethylbenzene1.9 1.8 <0.55 4.0 1.3 0.98 0.37J
0.71 0.75 0.14J 1.3 0.81 2.6 0.19
<440 <570 <820 <840 <1,100 <740 <740
0.43 0.60 <0.55 1.3 0.58J 0.80 0.27J
0.22J 3.5 <0.55 1.6 0.61J 4.1 1.4
0.17J 50 3.5 2.4 0.44J 0.53 0.16J
175,000 438,000 438,000 61,300 2,630,000 613 613*
µg/m3
Table 2 (Page 1 of 1)
Summary of Indoor Air Sample Field Data
Former CHT Facility
Charlotte, North Carolina
H&H Job No. FDP-035
S:\AAA-Master Projects\ForSite Development Partners (FDP)\FDP-035 cht old pineville rd\Brownfields Assessment\Report\Table.xlsx
6/19/2015
Table 2 (Page 1 of 1)
Hart & Hickman, PC
Time
Temperature
oF
Differential
Pressure
(in Water)
Temperature
oF
Wind
Direction
Wind
Speed
(mph)
Precipitation
(inches)
8:15 NA 0 39 WSW 2 0.00
12:30 NA 0 55 SSW 4 0.00
16:45 NA 0 60 WSW 2 0.00
Beginning 43 0.001
Middle 46 0.007
End 52.3 0.002
Beginning 44.3 0.001
Middle 50.5 0.007
End 52.7 0.002
Beginning 48 0.001
Middle 51 0.007
End 52.9 0.002
Beginning 48 0.001
Middle 50.9 0.007
End 52.3 0.002
Notes:
Information from on-site weather station set up by H&H on December 12,2014 during indoor air sampling event.
Positive differential pressure indicates that the pressure outside the building was higher than the inside pressure.
Differential pressure and temperature readings taken from each sample location at the beginning, middle, and end during the 8-hour sample collection
NA = Not Applicable
mph = miles per hour
Sample ID Sample Location
Indoor Outdoor
BAS-1 North West Parking Lot
Vacant Warehouse
Vacant Warehouse
Vacant Warehouse
IA-1
IA-2
IA-4
IA-3 Vacant Warehouse
Table 3 (Page 1 of 1)
Summary of Indoor and Background Air Analytical Data
Former CHT Facility
Charlotte, North Carolina
H&H Job No. FDP-035
S:\AAA-Master Projects\ForSite Development Partners (FDP)\FDP-035 cht old pineville rd\Brownfields Assessment\Report\Table.xlsx
Table 3 (Page 1 of 1)
Hart & Hickman, PCEthylbenzeneTetrachloroethene (PCE)Trichloroethene (TCE)Total XylenesIAS-1 South-Central Warehouse 12/12/14 TO-15 0.26 1.6 0.32 1.34
IAS-2 South-Central Warehouse 12/12/14 TO-15 0.23 1.1 <0.19 1.45
IAS-3 South-Central Warehouse 12/12/14 TO-15 0.18 1.3 <0.19 0.97
IAS-4 South-Central Warehouse 12/12/14 TO-15 0.23 0.58 <0.19 1.13
BAS-1 Outdoor/Background 12/12/14 TO-15 0.34 0.35 <0.19 1.62
4.91 35.0 1.75 87.6
Notes
Bold indicates concentration exceeds DWM Non-Residential Indoor Air Screening Level (June 2014 table)
Only compounds detected in at least one sample shown
NS = Not Specified
µg/m3 = micrograms per cubic meter
LICR = Lifetime Incremental Cancer Risk
HI = Non-carcinogenic hazard index
µg/m3
DWM Non-Residential Indoor Air Screening Level (LICR = 1 x 10-6 and HI = 0.2)Sample IDSample LocationSampling Date Analytical Method
0 2000 4000
APPROXIMATE
SCALE IN FEET
N
U.S.G.S. QUADRANGLE MAP
QUADRANGLE
7.5 MINUTE SERIES (TOPOGRAPHIC)
Charlotte East, NC 2013
Charlotte West, NC 2013
TITLE
PROJECT
SITE LOCATION MAP
Former CHT Facility
5046 Old Pineville Road
CHARLOTTE, NORTH CAROLINA
DATE:
JOB NO:
REVISION NO:
FIGURE:
1-6-2015 0
1 FDP-035
SITE
S:\AAA-Master Projects\ForSite Development Partners (FDP)\FDP-035 cht old pineville rd\Brownfields Assessment\Report\Brownfields Assessment Report.doc
Appendix A
Laboratory Analytical Data
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