HomeMy WebLinkAboutDecember 2018_Indoor Air Assessment February 28, 2019
Anchor QEA of North Carolina, PLLC 231 Haywood Street Asheville, North Carolina 28801 828.281.3350
\\Asheville1\Asheville\Projects\Jedhy LLC\Ticar Chemical Phase II ESA\Reports\Indoor Air - 2018-12\2018 Indoor Air Assessment - Former Ticar Chemical Co.docx
Mr. David Ramey
Inactive Hazardous Sites Branch
North Carolina Department of Environmental Quality
Mooresville Regional Office
610 East Center Avenue, Suite 301
Mooresville, North Carolina 28115
Ms. Joselyn Harriger
Brownfields Program
North Carolina Department of Environmental Quality
Mooresville Regional Office
610 East Center Avenue, Suite 301
Mooresville, North Carolina 28115
Re: 2018 Indoor Air Assessment
Former Ticar Chemical Co.
32 Old Brevard Road
Asheville, North Carolina
Mr. David Ramey and Ms. Joselyn Harriger,
Anchor QEA of North Carolina, PLLC (Anchor QEA), on behalf of Ticar Chemical Company and at the
request of the North Carolina Department of Environmental Quality (DEQ) Brownfields Program,
prepared this indoor air assessment letter report for the above-referenced property (Site). A Site map
is attached as Figure 1. This report documents the results of indoor air samples collected in
December 2018.
Project Background
In April 2016, Altamont Environmental, Inc. (Altamont), which became Anchor QEA on December 29,
2016, performed sub-slab soil gas sampling in the Site building. The results of sub-slab soil-gas
sampling activities indicated that there may be a risk of vapor intrusion occurring in the Site building.
Based on these results, an indoor air assessment and chemical inventory were performed in June and
July 2016. The results of the June 2016 sampling event indicated elevated concentrations of
trichloroethene (TCE) in indoor air. As a result, Altamont implemented temporary mitigation
measures, including modifying the existing heating ventilation and air conditioning (HVAC) units and
installing industrial fans to provide fresh air and a positive pressure atmosphere in the building.
February 28, 2019 Page 2
Following implementation of mitigation measures, two rounds of indoor air sampling were
performed on July 25 and July 29, 2016. The results of these sampling events indicated that
mitigation measures were successful at reducing or eliminating indoor air concentration of TCE.
Interim mitigation measures were operated from approximately July 20 to October 3, 2016.
Although the interim mitigation efforts were successful, a pre-mitigation comparison of sub-slab
soil-gas results to indoor air results had indicated a disparity between the sub-slab concentrations of
TCE and tetrachloroethene (PCE). As a result, the attenuation factors of similar contaminants were
further evaluated, and the chemical inventory was revisited. For one of the products stored on Site
(ProMaster Spot Lite), neither a material safety data sheet/safety data sheet (SDS) nor a label
disclosing the formula were available; however, through additional assessment, Altamont determined
that this product is composed of approximately 40% TCE.
In order to evaluate whether the ProMaster Spot Lite product was a primary or contributing source
of the TCE previously detected in indoor air, Altamont performed an additional indoor air assessment
on October 6, 2016. The assessment followed the removal of chemicals, carpet samples, and sections
of carpet stored on Site and the termination of interim mitigation measures. The results of the
October 6, 2016 sampling indicated that the ProMaster Spot Lite product had been the primary
source of TCE detected in indoor air during the June 2016 sampling event.
The results of the October 6, 2016 assessment are detailed in an Indoor Air Assessment and Interim
Mitigation letter report dated October 24, 2016.
Altamont performed a third round of confirmation sampling on November 1, 2016. During this
sampling event, no concentrations of constituents exceeded the DEQ’s one-in-one million increased
lifetime target risk (1x10-6) Non-Residential, Indoor Air Screening Levels (IASLs)1. Following this
sampling event, on November 14, 2016, an email was sent from Ms. Carol Jones Van Buren (the
property owner’s attorney) to Jocelyn Harriger and Bruce Nicholson of the DEQ Brownfields program
regarding the sampling event’s results. Following receipt of Ms. Van Buren’s email, the Brownfields
Program granted re-occupancy of the building without mitigation measures.
Anchor QEA performed the fourth round of confirmation sampling on July 6, 2017. During this
sampling event, TCE was not detected above the 1x10-6 Non-Residential IASL. Only one sample,
IA-14, contained a concentration of TCE above the laboratory reporting limit, but below the 1x10-6
Non-Residential IASL of 2.75 micrograms per cubic meter (µg/m³). Only one chemical was detected
at a concentration in excess of the 1x10-6 Non-Residential IASL. Chloroform collected in sample
IA-13, in the eastern portion of the warehouse, was detected at a concentration of 0.65 µg/m³, which
1 North Carolina Department of Environmental Quality, 2018. Non-Residential Vapor Intrusion Screening Levels. February 2018. Available at: https://files.nc.gov/ncdeq/Waste%20Management/DWM/SF/RiskBasedRemediation/Feb2018_NonRes_VISLs.pdf
February 28, 2019 Page 3
is compared to the 1x10-6 Non-Residential IASL for chloroform of 0.533 µg/m³. Chloroform is a
common laboratory contaminant and is likely not associated with vapor intrusion.
Building Details
During the December 2018 assessment, Delong Equipment Company was occupying the building.
According to Buncombe County Tax Department GIS, the building footprint is 21,905 square feet.
The building’s ceiling height ranges from approximately 16 feet at the north and south walls to 22
feet at the apex of the roof. The building’s roof is improved by four roof vents along the centerline.
The warehouse spaces are separated by a non-structural wall with access provided by two doors
from the eastern and western portions. One bay door is located in the western warehouse space, and
five bay doors are located in the eastern warehouse space. One of the bay doors in the eastern
warehouse space is partially boarded up. The western warehouse space has a drop ceiling
approximately 12 feet in height. The office space has an 8-foot-tall drop ceiling. A mezzanine space
is located above the office and includes a conference room and storage.
The occupied office space is climate-controlled with a dedicated HVAC unit. The remaining office
space has a separate HVAC unit. There are three HVAC units connected to the western warehouse
space. Three roof-mounted HVAC units were observed in the eastern warehouse space.
During the December 2018 sampling event, all roof vents and bay doors in the building were closed
and HVAC in all spaces was operational. Employees of Delong Equipment Company were packing,
sorting, and storing turbo charger components.
2018 Assessment Activities
Assessment activities included indoor air sampling and a chemical inventory, as described in the
following sub-sections.
Chemical Inventory
On December 13, 2018, Anchor QEA mobilized to the Site to meet with Ricky Anderson (the current
tenant) to conduct a chemical inventory. The purpose of this inventory was to identify products
within the building that could potentially emit chemicals into the indoor air. During the Site visit,
Anchor QEA recognized and identified three products within the Site’s building:
• Rubbing alcohol (isopropyl alcohol or isopropynol)
• Lubricant oil (Castrol Techniclean 3602)
• Rust inhibitor (Madison Chemical Compound RP-26)
Containers of paint and household cleaning products were also observed on Site. Container labels
were reviewed, and SDSs were located and reviewed for the products observed.
February 28, 2019 Page 4
Review of the SDSs of these products indicated the following chemicals in each product:
• Castrol Techniclean 3602 – Contains between 10% and 25% triethanolamine
• Madison Chemical Compound RP-26 – Contains between 70% and 80% hydrotreated light
petroleum distillates
Indoor Air Assessment
To evaluate indoor air quality, Anchor QEA collected three indoor air samples and one ambient air
sample using summa cannisters.
Indoor and ambient air samples were collected using 6-liter summa canisters with 8-hour
minimum collection valves. Summa canister samples were collected on December 13, 2018. Each
sample was collected using a stainless-steel sampling port elevated at a representative “breathing
zone” height, in this case approximately 4 feet above the building floor (grade). The indoor air
samples were submitted for analysis using U.S. Environmental Protection Agency Method TO-15 for
volatile organic compound constituents.
The summa canister sample locations were selected to provide an ambient air sample and coverage
of the three main spaces in the building:
• IA-13: the eastern portion of the warehouse
• IA-14: the western portion of the warehouse
• IA-15: the office space (which adjoins the western warehouse space)
• A-4: outside of the building, near the door that enters the western portion of the warehouse
Sample locations are shown in Figure 2 and the analytical laboratory results are summarized in
Table 1.
Indoor Air Results
TCE was not detected above laboratory reporting limits in the indoor air samples collected on
December 13, 2018. Samples IA-13, IA-14, and IA-15 contained concentrations of PCE above the
laboratory reporting limit, but below the 1x10-6 Non-Residential IASL of 35 µg/m³. Two chemicals,
isopropanol and benzene, were detected at concentrations greater than the 1x10-6 Non-Residential
IASLs, which are 180 µg/m³ for isopropanol and 1.6 µg/m³ for benzene. Isopropanol was detected at
a concentration of 680 µg/m³ and 190 µg/m³ in sample IA-13 (eastern portion of the warehouse) and
IA-14 (western portion of the building), respectively. Benzene was detected at a concentration of
1.8 µg/m³ in sample IA-14. Isopropanol is stored within the warehouse, so is likely not associated
with vapor intrusion. Benzene was not previously detected in indoor air or sub-slab soil gas samples.
Therefore, the detected concentration of benzene in sample IA-14 is also likely not associated with
vapor intrusion.
February 28, 2019 Page 5
For a summary of analytical results, see Table 1. For the complete list of analytical results, see the
attached laboratory analytical report. The analytical results from the four previous sampling events in
2017 and 2016 are included on Tables 2 and 3, respectively.
Conclusions and Recommendations
Historical results indicate that there is likely no unacceptable vapor intrusion risk at the Site.
Although benzene and isopropanol were detected at concentrations above the 1x10-6 Non-
Residential IASLs in the December 2018 samples, the constituents are most likely not attributable
to vapor intrusion.
Benzene is likely associated with a constituent or impurity present in chemical products used by
the current building occupant including, potentially, cigarettes smoked by employees of the
building occupant. Additionally, although isopropanol was detected in indoor air above the
1x10-6 Non-Residential IASL during the July 25, 2016 sampling event, this detected concentration
was attributed to a building occupant cleaning a desk surface with rubbing alcohol (isopropanol)
during the sampling event. Further, isopropanol has not been detected in soil gas at the Site, other
than trace detections, likely associated with laboratory contamination. Because benzene and
isopropanol are associated with occupational usage or other occupant sources and not vapor
intrusion from impacted media, these concentrations most likely should be compared to limits
enforced by the Occupational Safety and Health Administration (OSHA), not the DEQ.
Based on the 2018 analytical data, Anchor QEA recommends that indoor air sampling be continued
annually for the next 2 years to demonstrate that indoor air concentrations of constituents of
concern (particularly TCE and PCE) remain stable and below the 1x10-6 Non-Residential IASL criteria.
After two additional annual monitoring events with results similar to this event (which will result in 5
years of indoor air monitoring at the Site), Anchor QEA recommends that indoor air monitoring be
discontinued at the Site.
February 28, 2019 Page 6
If you have any questions or concerns, please feel free to contact me.
Sincerely,
Christopher F. Gilbert, PE
Principal Engineer
cc: Carol Jones Van Buren—Van Buren Law, PLLC Billy Clarke—Roberts & Stevens, P.A.
Attachments
Table 1 2018 Indoor Air Analytical Results
Table 2 2017 Indoor Air Analytical Results
Table 3 2016 Indoor Air Analytical Results
Figure 1 Site Location Map
Figure 2 Sample Location Map
Attachment 1 Laboratory Analytical Results
Tables
Table 1
2018 Indoor Air Analytical Results
Sample ID:IA-13 IA-14 IA-15 A-4
Sample Height
Above Grade:4 feet 4 feet 4 feet 4 feet
Date Collected:12/13/2018 12/13/2018 12/13/2018 12/13/2018
IASL µg/m3 µg/m3 µg/m3 µg/m3
4,400 0.096 J <0.41 <0.20 <0.41
4,400 0.45 J <0.93 <0.46 <0.93
53 1.6 <0.63 1.4 <0.63
53 0.47 <0.62 0.46 J <0.62
4,400 0.84 J <0.92 2.1 J 3.8 J
NL 0.42 <0.20 1.1 <0.20
2,600 <0.069 <0.39 <0.20 <0.39
27,000 <1.2 16 J 18 12 J
1.6 1.4 1.8 1.6 <0.26
610 <0.075 <0.43 <0.21 <0.43
2.0 0.32 <0.41 <0.21 <0.41
0.53 <0.064 <0.36 <0.18 <0.36
79 1.0 <0.28 <0.14 <0.28
5,300 1.2 2.5 <0.24 <0.49
88 0.86 3.5 L-05 3.2 L-05 3.7 L-05
NL 26 34 190 26
61 <0.094 <0.54 <0.27 26
4.9 0.68 0.68 J 0.63 <0.50
350 1.2 2.4 1.2 <0.48
610 2.4 J <1.2 <0.62 <1.2
180 1,700 480 58 17 J
530 0.37 J <0.84 0.98 J 2.9 J
88 2.60 2.60 1.9 3.1
88 0.98 1.10 <0.27 1.3
880 <0.092 <0.53 <0.26 2.5
1.8 <0.076 <0.43 <0.22 <0.43
35 7.6 11.0 5.2 <0.75
4,400 3.9 4.4 3.5 22
NL <0.056 <0.32 <0.16 <0.32
NL 1.2 1.8 J 2.2 J 1.6 J
2.8 <0.057 <0.32 <0.16 <0.32
Bold indicates a constituent was detected above the laboratory reporting limit.
Blue shading indicates a constituent was detected at a concentration in excess of the respective IASL.
<0.20: indicates a constituent was not detected above the laboratory reporting limit
NL: indicates that there is no IASL guidance value listed in the March 2016 table.
VOCs: volatile organic compounds by U.S. Environmental Protection Agency (EPA) Method TO-15
IASL: Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Non-Residential Indoor Air Screening Level
(IASL A), updated February 2018.J: indicates a constituent was detected at a level greater than the method detection limit but below the laboratory reporting limit,
and is therefore considered an estimate.L-05: indicates that the laboratory fortified blank/laboratory control sample recovery is outside of control limits. The reported value is
likely to be biased on the high side.
VOCs
1,1,1-Trichloroethane
1,1,2-Trichloro-1,2,2-trifluoroethane
1,2,4-Trimethylbenzene
1,3,5-Trimethylbenzene
2-Butanone (MEK)
4-Ethyltoluene
4-Methyl-2-pentanone (MIBK)
Acetone
Benzene
Carbon disulfide
Carbon tetrachloride
Chloroform
Chloromethane
Cyclohexane
Dichlorodifluouomethane
Ethanol
Ethyl acetate
Ethylbenzene
Heptane
Hexane
Isopropanol
Methylene Chloride
m-Xylene & p-Xylene
o-Xylene
Styrene
Trichloroethene (TCE)
Tetrachloroethene (PCE)
Toluene
µg/m³: micrograms per cubic meter
trans-1,2-Dichloroethene
Trichlorofluoromethane
Vinyl Chloride
Notes:
2018 Indoor Air Assessment ReportFormer Ticar Chemical Company Page 1 of 1January 2019
Table 2
2017 Indoor Air Analytical Results
Sample ID:IA-13 IA-14 IA-15 A-4
Sample Height Above Grade:4 feet 4 feet 4 feet 4 feet
Date Collected:7/6/2017 7/6/2017 7/6/2017 7/6/2017
IASL µg/m3 µg/m3 µg/m3 µg/m3
4,380 <0.19 1.9 <0.19 <0.19
26,300 0.49 J 0.26 J 0.42 J 0.40 J
7.67 <0.14 2.5 <0.14 <0.14
175 <0.14 1.2 <0.14 <0.14
2,630 0.52 <0.14 0.48 0.32
613 0.17 J 0.13 J 0.14 J 0.10 J
0.533 0.65 0.15 J 0.47 <0.17
NL <0.14 <0.14 <0.14 <0.14
4.91 0.49 <0.15 0.32 0.47
613 8.5 0.40 J 3.3 J 0.84 J
175 5.0 2.6 J 4.1 7.4
526 0.56 J 0.29 J 0.20 J 0.30 J
87.6 1.4 <0.30 0.96 1.6
87.6 0.76 <0.15 0.46 0.52
35 2.6 <0.24 4.1 <0.24
4,380 7.2 <0.13 4.3 42
NL <0.14 <0.14 0.12 J <0.14
2.75 <0.19 0.21 <0.19 <0.19
NL 1.1 0.89 1.0 1.1
3.79 <0.090 <0.090 <0.090 <0.090
Bold indicates a constituent was detected above the laboratory reporting limit.
Blue shading indicates a constituent was detected at a concentration in excess of the respective IASL.
<0.19: indicates a constituent was not detected above the laboratory reporting limit
0.49 J: indicates a constituent was detected at a level greater than the method detection limit but below the laboratory reporting limit, and is therefore considered an estimate.
IASL: Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Non-Residential Indoor Air Screening Level (IASL A), updated March 2016.
NL: indicates that there is no IASL guidance value listed in the March 2016 table.
VOCs: volatile organic compounds by U.S. Environmental Protection Agency (EPA) Method TO-15
VOCs
1,1,1-Trichloroethane
1,1,2-Trichloro-1,2,2-trifluoroethane
1,1-Dichloroethane
1,1-Dichloroethene
4-Methyl-2-pentanone (MIBK)
Carbon disulfide
Chloroform
cis-1,2-Dichloroethene
Ethylbenzene
Hexane
Isopropyl alcohol
Methylene Chloride
m-Xylene & p-Xylene
µg/m³: micrograms per cubic meter
Trichlorofluoromethane
Vinyl Chloride
Notes:
o-Xylene
Tetrachloroethene (PCE)
Toluene
trans-1,2-Dichloroethene
Trichloroethene (TCE)
2018 Indoor Air Assessment ReportFormer Ticar Chemical Company Page 1 of 1January 2019
Table 3
2016 Indoor Air Analytical Results
Sample ID:IA-7 IA-7 IA-8 IA-8 IA-9 IA-9 IA-10 IA-10 IA-11 IA-11 IA-12 IA-12 IA-13 IA-14 IA-15 A-4
Date Collected:10/6/2016 11/1/2016 10/6/2016 11/1/2016 10/6/2016 11/1/2016 10/6/2016 11/1/2016 10/6/2016 11/1/2016 10/6/2016 11/1/2016 7/6/2017 7/6/2017 7/6/2017 7/6/2017
IASL
4,380 0.05 L-03 J 0.073 J 0.057 L-03 J 0.12 J 0.061 L-03 J 0.088 J 0.057 L-03 J 0.14 J 0.073 L-03 J 0.21 0.077 L-03 J 0.13 J <0.19 1.9 <0.19 <0.19
26,300 0.45 J 0.56 J 0.64 J 0.56 J 0.64 J 0.58 J 0.52 J 0.58 J 0.72 J 0.73 J 0.40 J 0.77 J 0.49 J 0.26 J 0.42 J 0.40 J
7.67 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 2.5 <0.14 <0.14
175 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 1.2 <0.14 <0.14
2,630 <0.14 <0.14 <0.14 0.14 J 0.069 J 0.50 0.10 J 0.17 0.12 J <0.14 1.1 0.19 0.52 <0.14 0.48 0.32
613 <1.1 <1.1 <1.1 <1.1 <1.1 0.16 J <1.1 0.070 J <1.1 <1.1 0.17 J <1.1 0.17 J 0.13 J 0.14 J 0.10 J
0.533 0.089 J 0.082 J 0.18 0.12 J 0.20 0.16 J 0.22 0.23 0.29 0.29 0.29 0.29 0.65 0.15 J 0.47 <0.17
NL <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14
4.91 0.12 J 0.11 J 0.20 0.15 J 0.22 0.48 0.28 0.22 0.36 0.27 34 0.27 0.49 <0.15 0.32 0.47
613 0.54 J 0.51 J 0.47 J 0.47 J 0.69 J 5.1 0.61 J 1.3 J 0.49 J 0.45 J 8.2 0.55 J 8.5 0.40 J 3.3 J 0.84 J
175 1.2 J 1.4 J 0.95 J 1.9 J 2.0 J 4.7 1.2 J 2.8 J 1.6 J 2.8 J 3.0 J 2.2 J 5.0 2.6 J 4.1 7.4
526 0.41 J 0.42 J 0.41 J 0.43 J 0.95 J 14 0.54 J 2.6 0.45 J 0.54 J 0.45 J 0.49 J 0.56 J 0.29 J 0.20 J 0.30 J
87.6 0.44 0.28 J 0.67 0.48 0.77 1.4 0.99 0.82 1.3 1.0 120 1.0 1.4 <0.30 0.96 1.6
87.6 0.17 0.16 0.41 0.38 0.48 0.75 0.49 0.51 0.53 0.60 90 0.59 0.76 <0.15 0.46 0.52
35 3.0 4.3 1.6 3.3 1.6 2.6 1.1 2.5 1.1 4.1 1.5 3.2 2.6 <0.24 4.1 <0.24
4,380 1.5 0.82 1.3 0.95 1.3 14 1.4 0.99 1.4 1.4 5.6 1.1 7.2 <0.13 4.3 42
NL <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 0.12 J <0.14
1.75 0.064 J <0.19 <0.19 <0.19 <0.19 0.10 J <0.19 <0.19 0.060 J <0.19 0.48 <0.19 <0.19 0.21 <0.19 <0.19
Trichlorofluoromethane NL 1.1 0.99 1.1 1.2 1.4 1.3 1.0 1.2 1.1 1.8 1.1 1.3 1.1 0.89 1.0 1.1
2.79 <0.090 <0.090 <0.090 <0.090 <0.090 <0.090 <0.090 <0.090 <0.090 <0.090 <0.090 <0.090 <0.090 <0.090 <0.090 <0.090
Notes:
Bold indicates a constituent was detected above the laboratory reporting limit.
Blue shading indicates a constituent was detected at a concentration in excess of the respective IASL.
Sample height is 4 feet above grade.
µg/m³: All results are in micrograms per cubic meter
<0.19: indicates a constituent was not detected above the laboratory reporting limit
0.17 J: indicates a constituent was detected at a level greater than the method detection limit but below the laboratory reporting limit, and is therefore considered an estimate.
ft: feet
IASL: North Carolina Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Non-Residential Indoor Air Screening Level (IASL A), updated March 2016.
L-03: flag indicates the laboratory control sample recovery is outside of the control limits; therefore, the reported value for this compound is likely to be on the low side.
NL: indicates that there is no IASL guidance value listed in the March 2016 table.
VOCs: volatile organic compounds by U.S. Environmental Protection Agency (EPA) Method TO-15.
VOCs
cis-1,2-Dichloroethene
µg/m³
Trichloroethene (TCE)
Vinyl Chloride
Tetrachloroethene (PCE)
4-Methyl-2-pentanone (MIBK)
Carbon disulfide
Chloroform
Ethylbenzene
Hexane
trans-1,2-Dichloroethene
Toluene
1,1,1-Trichloroethane
1,1,2-Trichloro-1,2,2-trifluoroethane
1,1-Dichloroethane
1,1-Dichloroethene
Isopropyl alcohol
Methylene Chloride
m-Xylene & p-Xylene
o-Xylene
2018 Indoor Air Assessment ReportFormer Ticar Chemical Company Page 1 of 1January 2019
Figures
Site
[0 2,000
Feet
DATA SOURCE:USGS Topographic Map - National GeographicSociety 2013
NOTE:Subject Site property boundary isapproximate.
LEGEND:
Property Boundary
Publish Date: 2019/01/30, 4:12 PM | User: alesueurFilepath: \\Asheville1\Asheville\Projects\Jedhy LLC\Ticar Chemical Phase II ESA\Reports\Indoor Air - 2018-12\Figures\Figure 1 - Site Location Map.mxd
Figure 1Site Location Map2018 Indoor Air Assessment ReportFormer Ticar Chemical Company
X
X
GF
GF
GF
GF
GF
GF GF
GFGF
GF
GF
GF
GF
GFGF
X
XX
[0 20
Feet
DATA SOURCES:Site Boundary - Buncombe County GIS 2015Aerial Imagery - NC OneMap 2015
NOTE:Sample locations and Site features are approximate.
LEGEND:
X Sub-Slab Sample Location
GF Indoor Air Sample Location
X Ambient Air Sample Locations
Interior Walls
Building Footprint
Publish Date: 2017/07/24, 2:24 PM | User: ecruteFilepath: P:\Jedhy LLC\Ticar Chemical Phase II ESA\Reports\Indoor Air - 2017-07\Figures\Figure 2 - Sample Location Map.mxd
Figure 2Sample Location Map2018 Indoor Air Assessment ReportFormer Ticar Chemical Company
Attachment 1
Laboratory Analytical Results
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