23061_Caraustar Mill Building Assessment Report_20211220

01675-001/00351942-1
Brownfields Indoor Air and Sub-
Slab Soil Gas Testing Report

Caraustar and Savona Mills
South Turner Avenue and Chamberlain Avenue
Charlotte, Mecklenburg County, North Carolina
NCBP #23061-19-060

December 20, 2021
Terracon Project No. 71167021

Prepared for:
Savona II, LLC
Charlotte, North Carolina

Prepared by:
Terracon Consultants, Inc.
Charlotte, North Carolina

ii

TABLE OF CONTENTS

1.0 PROJECT BACKGROUND ............................................................................................ 1
1.1 Site Description .................................................................................................... 1
1.2 Site History .......................................................................................................... 1
1.3 Prior Investigations .............................................................................................. 2
1.4 Purpose of Soil Vapor Evaluation ......................................................................... 3
2.0 SCOPE OF SERVICES ................................................................................................... 3
2.1 Standard of Care.................................................................................................. 4
2.2 Additional Scope Limitations ................................................................................ 4
2.3 Reliance ............................................................................................................... 4
3.0 FIELD INVESTIGATION METHODS ............................................................................... 4
3.1 Indoor Air Sampling ............................................................................................. 5
3.2 Soil Vapor Sampling ............................................................................................ 6
4.0 ANALYTICAL RESULTS ................................................................................................ 7
4.1 Indoor Air Sample Results ................................................................................... 7
4.2 Soil Vapor Sample Results .................................................................................. 8
4.3 NCDEQ Risk Calculator ....................................................................................... 8
5.0 CONCLUSIONS .............................................................................................................. 9

Table
Table 1 – Soil Vapor/Indoor Air Analytical Results-Savona Mill Building (2020 and 2021)

Exhibits
Exhibit 1 – Topographic Map
Exhibit 2 – Site Diagram
Exhibit 3 – Soil Vapor and Indoor Air Sample Location Map – Savona Mill Building

Appendices
APPENDIX A – FIELD NOTES/DOCUMENTATION
APPENDIX B – LABORATORY ANALYTICAL REPORT
APPENDIX C – NCDEQ RISK CALCULATOR SUMMARY

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BROWNFIELDS INDOOR AIR AND SUB-SLAB SOIL GAS TESTING REPORT
CARAUSTAR AND SAVONA MILLS
SOUTH TURNER AVENUE AND CHAMBERLAIN AVENUE
CHARLOTTE, NORTH CAROLINA
NCBP #23061-19-060

Terracon Project No. 71167021
December 20, 2021

1.0 PROJECT BACKGROUND

1.1 Site Description

The proposed Brownfields site consists of nine contiguous tax parcels totaling approximately 31.3
acres located along both sides of South Turner Avenue and Chamberlain Avenue in Charlotte,
North Carolina (Figure 1). The current site layout is depicted in Figure 2.

The site is bound to the south and southwest by Stewart Creek and wooded land and to the south
by State Street, residences and an automotive mechanics shop. Currently, adjoining properties
to the north and east consist predominantly of residences; however, the former Flint Ink facility
was previously located on an adjacent property to the east/northeast of the site.

1.2 Site History

Available historical information indicates Savona Manufacturing Company constructed a one-
story weave mill building on the southern portion of the site in 1915/1916. A three-story spinning
mill building was constructed as a building addition along the northern side of the weave mill in
1921. Several residential structures were located to the north of the mill building from at least the
1920s to the 1980s. Residences were also depicted in the southeastern portion of the site.
A railroad spur also extended onto the site to the northeast from a nearby rail line located to the
southwest along the western side of the mill buildings. Ancillary structures were built to the west,
between the mill building and Stewart Creek. Primary operations at the mill included spinning,
weaving, dyeing, bleaching and finishing of cotton fabrics. Other operations included petroleum
storage, wastewater treatment with clarifiers and an aeration basin, a boiler room, oil house, AST
area, rotary dryer area, engine house, maintenance shop, and various storage warehouses.
Savona Manufacturing Company ceased textile operations at the site in 1931 but leased the
property to Alfred Cotton Mills for a couple of years. Textile production operations at the site
ceased by 1934.

In 1935, Old Dominion Box Company (ODBC) began manufacturing boxes and paperboard
products on the site. Operations were expanded in the mid-1950s, with ODBC constructing a
three-story paper warehouse at the northern end of the Savona Mill building and adding several
buildings to the north near the intersection of Chamberlain Avenue and Gardner Avenue.
Brownfields Indoor Air and Sub-Slab Soil Gas Testing Report
Caraustar and Savona Mills (NCBP# 23061-19-060) ■ Charlotte, North Carolina
December 20, 2021 ■ Terracon Project No. 71167021

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According to historical information, ODBC continued operations until the late-1980s or mid-1990s.
In the 1940s, Carolina Paperboard Corporation (CPC) constructed a paperboard manufacturing
facility to the northwest of the ODBC operation. The CPC facility included a pulp mill, offices,
finishing room, machine shop, settling basin, and other ancillary structures.

The former on-site CPC reportedly operated one 3,000-gallon underground gasoline storage tank
(UST), one 2,000-gallon diesel UST, one 4,000-gallon diesel UST, one 10,000-gallon diesel UST,
and six 30,000-gallon fuel oil USTs which were installed between 1968 and 1982. The tanks were
reportedly removed from the ground in 1993. A UST closure report available from the NCDEQ
documented the removal of the six 30,000-gallon USTs and two associated fuel oil ASTs in
February 1993. The February 1993 closure report indicates minor petroleum contamination was
identified in soils during removal activities. A subsequent initial abatement report including
delineation of soil impacts using soil borings identified residual soil impacts limited to the area of
the USTs. A groundwater monitoring well installed at that time was not impacted by petroleum
constituents above laboratory detection limits; however, the release incident remains open.

In 1980, CPC merged into Caraustar Industries, Inc. (Caraustar) and Atlantic Coast Carton
Company. The new entity continued paper manufacturing operations on the property until
approximately 2010. Limited recycling and storage operations continued until 2016. Caraustar
demolished most of the structures on the site to the west of the Savona Mill building between
2000 and 2010. An auxiliary metal building was constructed along the south side of the Savona
mill building in 1996. The building has been occupied by Blue Blaze Brewing since 2016.

1.3 Prior Investigations

Terracon completed sampling events at the site in 2016, 2018, 2020 and early 2021, which
included the collection of soil, groundwater and soil vapor samples. Since the purpose of this
report is to document the results of recent indoor air testing within the Savona Mill building (which
is planned for non-residential use; see Section 1.4 below), the summary below is limited to prior
sub-slab sampling activities completed within the Savona Mill building. A summary of soil and
groundwater sampling as well as shallow exterior and sub-slab soil vapor sampling completed
elsewhere on the site is available in Terracon’s Brownfields Data Gap Assessment Report, dated
June 8, 2021. Sample locations are shown on Figure 3. Analytical data is summarized in
Table 1.

In August 2020, Terracon collected four sub-slab samples (2020-SV-01 through 2020-SV-04)
from within the Savona Mill building. Numerous volatile organic compounds (VOCs) were
identified within sub-slab soil vapor. Benzene, 1,3-butadiene, carbon tetrachloride, chloroform,
isopropanol, 1,2,4-trimethylbenzene and 1,3,5-trimethylbenzene were identified above their
Residential Soil Gas Screening Levels (SGSLs) but below their Non-Residential SGSLs.
Naphthalene concentrations were detected in several samples above its Residential SGSL, and
naphthalene concentrations detected in samples 2020-SV-03 and 2020-SV-04 exceeded its Non-
Residential SGSL. At the request of the NCBP, in January 2021 Terracon collected additional
Brownfields Indoor Air and Sub-Slab Soil Gas Testing Report
Caraustar and Savona Mills (NCBP# 23061-19-060) ■ Charlotte, North Carolina
December 20, 2021 ■ Terracon Project No. 71167021

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sub-slab soil vapor samples (2021-SV-11 and 2021-SV-12) in the northern end of the Savona Mill
building to further evaluate the analytical results from sample points 2020-SV-03 and 2020-SV-
04. Numerous VOCs were identified in both samples. Naphthalene exceeded its Residential
SGSL in 2021-SV-11. No other VOC concentrations exceeded Residential SGSLs, and no VOC
concentrations were identified above their Non-Residential SGSLs. Risk to future non-residential
building occupants associated with the soil vapor to indoor air exposure pathway was evaluated
using the North Carolina Department of Environmental Quality (NCDEQ) Risk Calculator. The
maximum concentration of each compound detected within the above-referenced samples was
entered into the calculator to provide a conservative evaluation. The calculator indicated the total
carcinogenic risk to future non-residential building occupants was 4.7x10-6 with an associated
hazard index of 0.38, which do not exceed the thresholds for unacceptable risk of 1x10-4 and 1,
respectively.

1.4 Purpose of Soil Vapor Evaluation

Based on review of the historical assessment data, the NCBP requested the collection of two
indoor air samples from the northern end of the Savona Mill building near the prior locations of
soil vapor samples 2020-SV-03, 2020-SV-04 and 2021-SV-11 and 2021-SV-12. Additionally, the
NCBP requested the collection of one sub-slab sample at one of these locations to assist in
evaluation of the indoor air results. The purpose of the sampling is to confirm that neither vapor
mitigation nor post-construction pre-occupancy testing/on-going monitoring is necessary for the
proposed redevelopment.

The Savona Mill building is proposed for future non-residential use, and thus the relevant
screening levels for this building (and the other existing buildings on the site) are non-residential
screening levels. Since Prospective Developer understands that multi-family residential use will
be authorized for the site, this report also includes references to residential screening levels.
Given the planned non-residential use of the existing buildings at the site, Prospective Developer
proposes that the Brownfields agreement include a land use restriction requiring additional vapor
intrusion evaluation should Prospective Developer propose to convert any existing building
(including the Savona Mill building) to multi-family residential use.

2.0 SCOPE OF SERVICES

The scope of services was conducted using the protocols outlined in the approved Brownfields
Work Plan, dated March 19, 2020 (revised July 29, 2020 and approved August 5, 2020) and in
accordance with the additional procedures included in email correspondence between Terracon
and the NCBP. These latter procedures were approved by the NCBP via email on October 21,
2021. Technical approaches and methods utilized during the soil vapor investigation were in
accordance with the Interstate Technical and Regulatory Council’s Vapor Intrusion: A Practical
Guideline (2007) and Vapor Intrusion Pathway: Investigative Approaches for Typical Scenarios
Brownfields Indoor Air and Sub-Slab Soil Gas Testing Report
Caraustar and Savona Mills (NCBP# 23061-19-060) ■ Charlotte, North Carolina
December 20, 2021 ■ Terracon Project No. 71167021

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(2007), as well as the North Carolina Division of Waste Management (DWM) Vapor Intrusion
Guidance (2018).

2.1 Standard of Care

Terracon’s services were performed in a manner consistent with generally accepted practices of
the profession undertaken in similar studies in the same geographical area during the same time.
Terracon makes no warranties, either expressed or implied, regarding the findings, conclusions,
or recommendations. Please note that Terracon does not warrant the work of laboratories,
regulatory agencies, or other third parties supplying information used in the preparation of the
report. The services were performed in accordance with the scope of work authorized by our
client, as reflected in our proposal and were not conducted in accordance with ASTM E1903-11.

2.2 Additional Scope Limitations

Findings, conclusions, and recommendations resulting from these services are based upon
information derived from the on-site activities and other services performed under this scope of
work; such information is subject to change over time. Certain indicators of the presence of
hazardous substances, petroleum products, or other constituents may have been latent,
inaccessible, unobservable, non-detectable, or not present during these services. We cannot
represent the site as being free of hazardous substances, toxic materials, petroleum products, or
other latent conditions beyond those identified during this investigation. Subsurface conditions
may vary from those encountered at specific borings or wells or during other surveys, tests,
assessments, investigations, or exploratory services. The data, interpretations, findings, and our
recommendations are based solely upon data obtained at the time and within the scope of these
services.

2.3 Reliance

This report has been prepared for the exclusive use of Savona II, LLC, its affiliates, and their
lenders providing financing for the site. Any authorization for use or reliance by another party
(except a governmental entity) is prohibited without the expressed written authorization of Savona
II, LLC and Terracon. Any unauthorized distribution or reuse is at the sole risk of Savona II, LLC.
Reliance by authorized parties, except governmental agencies, will be subject to the terms,
conditions, and limitations stated in the Agreement for Services between Savona II, LLC and
Terracon.

3.0 FIELD INVESTIGATION METHODS

Terracon conducted the field work under a health and safety plan developed for this project. Work
was performed using United States Environmental Protection Agency (USEPA) Level D work
attire consisting of a hard hat, safety glasses, safety vest, protective gloves and protective boots.
Brownfields Indoor Air and Sub-Slab Soil Gas Testing Report
Caraustar and Savona Mills (NCBP# 23061-19-060) ■ Charlotte, North Carolina
December 20, 2021 ■ Terracon Project No. 71167021

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Field notes, photographs, the indoor air building survey, and soil vapor purge/sampling logs are
provided in Appendix A.

3.1 Indoor Air Sampling

Due to on-going interior renovation work within the Savona Mill building, the building is not
currently enclosed. Per the approved scope of work, prior to conducting the indoor air sampling,
polyethylene barriers were erected to enclose the proposed sampling areas. In addition, a core
hole observed within the concrete floor surface, approximately 40 feet from the northernmost
proposed indoor air sample, but outside the enclosed area, was also sealed using polyethylene
sheeting. The core hole apparently had been created during a previous evaluation to determine
the slab thickness and had not been patched/resurfaced. The polyethylene barriers remained in
place for a minimum of 72 hours prior to collection of the indoor air samples.

Multiple 5-gallon buckets of lead paint abatement lockdown sealant located within the enclosed
area surrounding the 2021-IA-01 sample location were removed approximately 72 hours in
advance of the indoor air sampling. In addition, the abatement contractor was instructed to cease
its removal of elevator equipment from the northern end of the Savona Mill building via use of a
propane-fired torch leading up to the sampling event.

Indoor Air Survey
On November 11, 2021, after the beginning of the indoor air testing, Terracon completed a
building survey form for building spaces where samples would be collected (see Appendix A).
While completing the survey, Terracon noted one empty aerosol can of “low-VOC” super-spray
glue within the enclosed space near the 2021-IA-02 testing location. The can was immediately
removed from the area. A parts-per-billion (ppb) capable photo-ionization detector (PID) was
used to collect field screening values of indoor air within the two enclosed sample spaces.
Concentrations of VOCs were measured via PID up to 140 ppb within the testing areas.

During the indoor air survey, Terracon observed through the open freight elevator doorway an
apparent open room located beneath the enclosed space where sample 2021-IA-01 was to be
collected. Terracon entered the basement of the mill building but could not identify a doorway or
access to the space. Upon further exploration, it was determined that an exterior doorway located
along the western side of the mill building could be used to enter the space. This doorway had
previously been obscured by debris. The space is tall enough for a person to stand without
crouching. Since a building slab is not present and the floor consists of exposed soil, the room is
considered a crawl space. Given the presence of the crawl space, samples 2020-SV-03 and
2021-SV-12, which were previously thought to represent sub-slab soil vapor samples, are in fact
representative of air within the crawl space collected over 10-minute periods of time. Presently,
the PD has not made a decision regarding redevelopment or re-use of the crawl space. A building
slab would be poured if re-use is proposed in the future. As such, the sample results from 2021-
SV-03 and 2021-SV-12 are not representative of future occupied exposure conditions within the
Brownfields Indoor Air and Sub-Slab Soil Gas Testing Report
Caraustar and Savona Mills (NCBP# 23061-19-060) ■ Charlotte, North Carolina
December 20, 2021 ■ Terracon Project No. 71167021

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space. The indoor air concentrations identified within sample 2021-IA-01 should be used to
evaluate risk to building occupants on the first floor of the mill building near this location,
regardless of the future use/non-use of the underlying crawl space.

Indoor Air Sample Collection
On November 11, 2021, Terracon collected two indoor air samples (2021-IA-01 and 2021-IA-02)
from the northern end of the Savona Mill building. The samples were collected in laboratory
supplied, individually-certified 6-liter Summa® canisters attached to a flow controller set for
approximately 8 hours. Following completion of the field activities, the Summa® canisters, along
with chain-of-custody documentation, were shipped to Con-test Analytical Laboratory in East
Longmeadow, Massachusetts for analysis of VOCs by modified EPA Method TO-15 Low Level.
Terracon recorded the remaining vacuum pressure inside each of the Summa® canisters at
regular intervals throughout the sampling period. Field sample collection records for indoor and
outdoor air are provided in Appendix A.

3.2 Soil Vapor Sampling

Soil Vapor Point Installation
After completion of the indoor air sampling activities on November 11, 2021, one sub-slab soil
vapor sampling point (2021-SV-11B) was installed in the northern end of the Savona Mill building
at the location of 2021-IA-02. The sub-slab sample point was installed using a hammer drill to
penetrate the slab. The point was constructed using a Vapor Pin™ installed within the 5/8-inch
diameter hole. A pre-cut silicone sleeve around the Vapor Pin™ was hammered into the hole to
create a competent seal with the concrete floor slab. The Vapor Pin™ was capped and the soil
gas point was allowed to equilibrate overnight before sampling.

Shut-In and Helium Tracer Testing
On November 12, 2021 and prior to sample collection, Terracon conducted a shut-in (deadhead)
test of the laboratory-provided sampling equipment and a helium tracer test to verify the integrity
of the vapor point seal. The shut-in test was conducted by attaching the laboratory-supplied
Summa® canister and flow controller manifold at each point to Teflon® lined tubing and a syringe.
The syringe was used to induce a vacuum within the flow controller manifold, at which point, the
manifold’s shut-off valve was closed. The stationary Summa® canister and manifold were sealed
from the atmosphere for approximately 10 minutes and the pressures within the manifold at the
beginning and the end of the shut-in period were recorded and compared. When no loss of
pressure was observed during the shut-in test period, the Summa® canister and manifold were
deemed suitable for sample collection.

During the helium tracer test, the sample point and sampling train was enclosed within a shroud.
The shroud atmosphere was enriched to a helium concentration of approximately 15 percent. At
least three volumes of the vapor point annulus and attached Teflon® lined tubing and sample train
was purged and directed into a Tedlar bag using a syringe. After each purge volume was
Brownfields Indoor Air and Sub-Slab Soil Gas Testing Report
Caraustar and Savona Mills (NCBP# 23061-19-060) ■ Charlotte, North Carolina
December 20, 2021 ■ Terracon Project No. 71167021

Responsive ■ Resourceful ■ Reliable 7
collected, the concentration of helium within the Tedlar bag was measured using an MGD-2002
helium detector. The sample seal was considered sufficiently sealed if the helium concentration
within the Tedlar bag was less than 10% of the concentration of helium within the shroud.
Concentrations of helium above the MGD-2002’s detection limit (25 parts per million) were not
identified during the helium tracer test; thus, sample point 2021-SV-011B was considered
sufficiently sealed.

Sample Collection
After completion of the shut-in and helium tracer test, the soil vapor sample was collected within
a batch-certified 1.0-liter Summa® canister equipped with a flow controller restricting the air flow
rate to less than approximately 200 mL/min. The vacuum pressure of the canister was monitored
and recorded at regular intervals throughout the sampling period. The sample period was
terminated prior to the vacuum pressure within each Summa® canister reaching 0 mmHg. After
completion of soil vapor sampling activities, the sample point was abandoned by removal of the
tubing and Vapor Pin™ and patching the borehole with a ready-mix concrete material. Following
completion of the field activities, the Summa® canisters, along with chain-of-custody
documentation, were shipped to Con-Test Analytical Laboratories in East Longmeadow,
Massachusetts for laboratory analysis of VOCs by EPA Method TO-15. Con-Test was instructed
to record the pressure within the Summa® canisters upon receipt.

4.0 ANALYTICAL RESULTS

The laboratory analytical reports and chain-of-custody records are provided in Appendix B and
are summarized on Table 1. The following sections describe the sample results.

4.1 Indoor Air Sample Results

Sample results for the two indoor air samples collected at the site were compared to the NCDEQ
Division of Waste Management (DWM) Indoor Air and Crawlspace Screening Concentrations
(IASLs) for residential and non-residential exposure scenarios, updated June 2021 (see Section
1.4, above, regarding applicable screening levels and exposure scenarios). The IASLs are based
on a target carcinogenic risk of 1.0E-6 and a target hazard quotient of 0.2.

▪ Benzene was detected in each indoor air sample at concentrations (1.8 and 1.9 µg/m3)
slightly exceeding its Non-Residential IASL of 1.6 µg/m3.

▪ Naphthalene was detected within each indoor air sample at concentrations (0.61 and 0.55
µg/m3) slightly above its Non-Residential IASL of 0.36 µg/m3.

▪ Chloroform was detected within each indoor air sample at concentrations (0.25 and 0.32
µg/m3) slightly above its Residential IASL of 0.12 µg/m3 but below its Non-Residential
IASL.
Brownfields Indoor Air and Sub-Slab Soil Gas Testing Report
Caraustar and Savona Mills (NCBP# 23061-19-060) ■ Charlotte, North Carolina
December 20, 2021 ■ Terracon Project No. 71167021

Responsive ■ Resourceful ■ Reliable 8

▪ 1,4-Dichlorobenzene was detected within each indoor air sample at concentrations
(0.32 and 0.57 µg/m3) slightly above its Residential IASL of 0.26 µg/m3 but below its Non-
Residential IASL.

▪ Ethylbenzene was detected within each indoor air sample at concentrations
(1.5 and 1.3 µg/m3) slightly above its Residential IASL of 1.1 µg/m3 but below its Non-
Residential IASL.

▪ Numerous other VOCs were detected within the indoor air samples (including
trichloroethylene [TCE] at an estimated concentration of 0.079 J µg/m3 in sample 2021-
IA-02); however, the detected concentrations do not exceed their Residential IASLs.

4.2 Soil Vapor Sample Results

The laboratory analytical results for the soil vapor sample were compared to the NCDEQ
Residential and Non-Residential Soil Gas Screening Levels (SGSLs), dated June 2021 (see
Section 1.4, above, regarding applicable screening levels and exposure scenarios).

▪ Naphthalene was detected in sample 2021-SV-11B at a concentration (6.7 µg/m3) above
its Residential SGSL of 2.8 µg/m3 but below its Non-Residential SGSL.

▪ 1,2,4-Trimethylbenzene was detected in sample 2021-SV-11B at a concentration (2,800
µg/m3) above its Residential SGSL of 420 µg/m3 but below its Non-Residential SGSL.

▪ 1,3,5-Trimethylbenzene was detected in sample 2021-SV-11B at a concentration (2,000
µg/m3) above its Residential SGSL of 420 µg/m3 but below its Non-Residential SGSL.

▪ Numerous other VOCs were detected within sample 2021-SV-11B; however, the detected
concentrations do not exceed their Residential IASLs. TCE was not detected within the
sub-slab soil vapor sample.

4.3 NCDEQ Risk Calculator

Terracon evaluated the cumulative carcinogenic risk and the non-carcinogenic hazard index for
future non-residential occupants of the Savona Mill building by entering the concentrations for
each compound detected within the indoor air and soil vapor samples at each location using the
most recent version (June 2021) of the NCDEQ Brownfields Risk Calculator. The calculated risks
are summarized in the table below:

Brownfields Indoor Air and Sub-Slab Soil Gas Testing Report
Caraustar and Savona Mills (NCBP# 23061-19-060) ■ Charlotte, North Carolina
December 20, 2021 ■ Terracon Project No. 71167021

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Non-Residential
Sample ID Carcinogenic Hazard Index
2021-SV-11B 2.7 x 10-7 0.2
2021-IA-01 4.1 x 10-6 0.12
2021-IA-02 4.4 x 10-6 0.16

Unacceptable risks to future non-residential site occupants associated with the indoor air and sub-
slab soil vapor concentrations detected during the November 2021 sampling event were not
identified at the site. A copy of the NCDEQ Risk Calculator summary sheets is included in
Appendix C.

5.0 CONCLUSIONS

Based on the scope of services described in this report and subject to the limitations described
herein, Terracon provides the following conclusions.

▪ During the indoor air survey, it was determined that a previously unknown crawl space is
located beneath the location of prior sub-slab soil vapor samples 2020-SV-03 and 2021-
SV-12. Given the presence of the crawl space, samples 2020-SV-03 and 2021-SV-12,
which were previously thought to represent sub-slab soil vapor samples, are in fact
representative of air within the crawl space collected over 10-minute periods of time.

▪ Numerous VOCs were detected within the indoor air and sub-slab soil vapor samples at
the northern end of the Savona mill building.

▪ Evaluation using the NCDEQ Risk Calculator indicates that there is not unacceptable risk
to future non-residential building occupants associated with the identified indoor air
concentrations. Cumulative carcinogenic risks at either sample location are two orders of
magnitude lower than the unacceptable risk threshold of 1x10-4 and the associated hazard
indices are greater than 6 times lower than the unacceptable risk threshold of 1.

Based on the detected indoor air and sub-slab soil vapor concentrations, the NCDEQ SGSLs and
IASLs, the NCDEQ Risk Calculator results, and the planned non-residential use of the Savona
Mill building, further sampling, vapor mitigation, and post-construction testing/monitoring are not
necessary within the Savona Mill building for future non-residential use.

TABLE

Table 1
Soil Vapor/Indoor Air Analytical Results - Savona Mill Building (2020 and 2021)
Caraustar and Savona Mills
Brownfields Site No. 23061-19-060
Charlotte, Mecklenburg County, North Carolina
Terracon Project No. 71167021
Sample ID:2020-SV-01 2020-SV-02 2020-SV-03 DUP-01 (SV-03)2021-SV-12 2021-IA-01 2020-SV-04 UnAdj.2020-SV-04 Adj.2021-SV-11 2021-SV-11B 2021-IA-02
Sample Date:August 19, 2020 August 19, 2020 August 19, 2020 August 19, 2020 January 11, 2021 November 11, 2021 August 20, 2020 August 19, 2020 January 11, 2021 November 12, 2021 November 11, 2021
Sample Depth:Sub-Slab Sub-Slab Indoor Air*Indoor Air*Indoor Air*Indoor Air Sub-Slab Sub-Slab Sub-Slab Sub-Slab Indoor Air
EPA Method TO-15
Acetone 55 20 240 210 25 98 8,700 11,869 130 280 190 220,000 2,700,000 6,500 27,000
Benzene 16 3.6 22 15 2.6 1.8 <0.19 <0.19 1.4 <0.77 1.9 12 160 0.36 1.6
1,3-Butadiene <0.32 <0.32 12 8.1 <0.32 <0.054 <0.32 <0.32 <0.32 <1.5 <0.054 3.1 41 0.094 0.41
2-Butanone (MEK)8.8 J <2.0 77 56 3.5 J 2.9 J 42 57 6.2 J 28 J 4.3 35,000 440,000 1,000 4,400
Carbon Disulfide <1.6 <1.6 <1.6 <1.6 <1.6 <0.28 <1.6 <1.6 4.8 J <7.9 <0.28 4,900 61,000 150 610
Carbon Tetrachloride 75 1.3 <0.33 <0.33 0.45 J 0.43 <0.33 <0.33 <0.33 <1.9 0.44 16 200 0.47 2
Chloroform 4.7 <0.24 <0.24 <0.24 0.35 J 0.25 <0.24 <0.24 <0.24 2.3 J 0.32 4.1 53 0.12 0.53
Chloromethane <0.32 <0.32 <0.32 <0.32 0.63 J 0.97 <0.32 <0.32 1.0 <0.85 1 630 7,900 19 79
Cyclohexane <0.34 <0.34 <0.34 <0.34 1.3 1 <0.34 <0.34 2.5 <2.3 1 42,000 530,000 1,300 5,300
1,4-Dichlorobenzene <0.27 <0.27 <0.27 <0.27 <0.27 0.32 <0.27 <0.27 <0.27 <2.4 0.57 8.5 110 0.26 1.1
Dichlorodifluoromethane (Freon 12)<0.31 <0.31 <0.31 <0.31 2.3 2.4 <0.31 <0.31 2.7 2.8 J 2.4 700 8,800 21 88
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)<0.79 <0.79 <0.79 <0.79 <0.79 0.13 J <0.79 <0.79 <0.79 <2.4 0.13 J NE NE NE NE
Ethanol 150 59 120 91 54 20 650 887 190 270 25 NE NE NE NE
Ethyl Acetate <4.3 <4.3 <4.3 <4.3 <4.3 1.3 <4.3 <4.3 <4.3 <21 2.1 490 6,100 15 61
Ethylbenzene 3.2 1.6 4.8 3.7 3.7 1.5 <0.18 <0.18 6.6 2 J 1.3 37 490 1.1 4.9
4-Ethyltoluene <0.30 <0.30 3.9 2.8 3.1 0.4 180 246 4.5 160 0.57 NE NE NE NE
Heptane 2.7 <0.35 5.0 4.3 2.6 3.5 5.0 6.8 5.2 1.7 J 36 2,800 35,000 83 350
Hexane 2.9 J <1.3 <1.3 33 3.4 J 12 53 72 3.8 J <12 11 4,900 61,000 150 610
2-Hexanone (Methyl butyl ketone)<0.46 <0.46 41 <0.46 <0.46 <0.072 <0.46 <0.46 <0.46 <2.1 <0.072 210 2,600 6.3 26
Isopropanol 72 25 86 59 13 J 2.5 J 12,000 16,371 120 150 5.9 1,400 18,000 42 180
Methylene Chloride <1.6 <1.6 <1.6 19 17 1.5 32 44 26 <8.0 0.71 J 3,400 53,000 100 530
Naphthalene 12 6.8 42 33 <0.59 0.61 99 135 29 6.7 0.55 2.8 36 0.083 0.36
Propene <1.2 <1.2 <1.2 <1.2 6.2 J <0.20 <1.2 <1.2 2.2 J <5.8 <0.20 21,000 260,000 630 2,600
Styrene 2.0 0.9 5.4 3.6 <0.24 0.54 <0.24 <0.24 0.26 J <1.3 0.77 7,000 88,000 210 880
Tetrachloroethylene 15 8.4 1.1 J <0.44 0.62 1.2 69 94 25 160 1.6 280 3,500 8.3 35
Tetrahydrofuran <1.5 <1.5 <1.5 <1.5 <1.5 0.52 J <1.5 <1.5 <1.5 <7.3 <0.25 14,000 180,000 420 1,800
Toluene 17 5.4 22 16 18 7.9 55 75 13 5.8 7 35,000 440,000 1,000 4,400
1,1,1-Trichloroethane <0.36 <0.36 <0.36 <0.36 <0.36 0.18 J <0.36 <0.36 1.3 <2.5 <0.088 35,000 440,000 1,000 4,400
Trichloroethylene <0.40 <0.40 <0.40 <0.40 0.84 J <0.069 <0.40 <0.40 <0.40 <2.0 0.079 J 14 180 0.42 1.8
Trichlorofluoromethane (Freon 11)1.6 J 1.9 J <0.85 1.6 J 1.3 J 1.3 <0.85 <0.85 1.1 J <2.2 1.3 NE NE NE NE
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)<1.2 <1.2 <1.2 <1.2 <1.2 0.61 J <1.2 <1.2 <1.2 <2.7 0.49 J 35,000 440,000 1,000 4,400
1,2,4-Trimethylbenzene <0.22 3.3 34 26 3.1 1.9 590 805 6.0 2,800 2.5 420 5,300 13 53
1,3,5-Trimethylbenzene 1.0 0.87 J 8.8 6.6 0.81 J 0.46 690 941 1.8 2,000 0.77 420 5,300 13 53
m&p-xylene 13 6.4 11 9.5 12 3.5 <0.30 <0.30 13 11 4.1 700 8,800 21 88
o-Xylene 4.3 2.3 5.1 4.5 4.7 2 <0.23 <0.23 4.8 <1.2 1.8 700 8,800 21 88
Notes:
Concentrations are reported in micrograms per cubic meter (μg/m3) unless otherwise noted.
Only compounds detected in one or more sub-slab soil vapor samples are shown. Detected concentrations are in bold font.
2020-SV-04 did not pass the helium tracer test. During sampling, the helium concentration within the shroud was maintained at approximately 15% helium.
2020-SV-04 was analyzed for helium via EPA Method 3C and determined to have a concentration of 4% helium, indicating breakthrough of approximately 26.7%. VOC concentrations
have been adjusted upward to account for introduction of ambient air into the sample, conservatively assuming that VOC compounds were not present within ambient
air and therefore assuming that the introduced air acted solely to dilute the detected concentrations within the sub-slab. For more information regarding the adjustment
method, see Section 5.3 of the report. Unadjusted concentrations are shown in the left column and adjusted concentrations in the right column.
Thick vertical borders separate sets of samples that come from the same area (e.g. 2020-SV-04, 2021-SV-11, 2021-SV-11B, and 2021-IA-02 were all collected from the central portion of the northernmost room of the Savona Mill building).
The red border groups paired (adjcent) sub-slab and indoor air samples that were collected at the same time (one day apart).
NE - Standard Not Established
DWM - North Carolina Department of Environmental Quality, Division of Waste Management
SGSL - DWM Sub-slab and Exterior Soil Gas Screening Level, updated June 2021.
Highlighted concentrations exceed their respective Residential SGSL.
J - Estimated concentration between the laboratory method detection and reporting limits.
*During the November 11, 2021 sampling activities, it was discovered that a previously unknown (to Terracon) crawl-space type room is present beneath the 2020-SV-03/2021-SV-11 sample location. Since these samples were previously thought to be representative of
sub-slab samples, they are in fact indoor air samples from this "crawl space" collected over approximate 10-minute periods. Sample 2021-IA-01 is an indoor air sample collected from the first floor of the mill building (above the "crawl space") over an 8-hour period.
Residential
SGSL Non-Residential SGSL Residential
IASL Non-Residential IASL

FIGURES

Brownfields Indoor Air and Sub-Slab Soil Gas TestingCaraustar and Savona Mills
Brownfields Site No. 23061-19-060
Charlotte, Mecklenburg County, North Carolina
Copyright:© 2013 National Geographic Society, i-cubed
USGS TOPOGRAPHIC MAPCHARLOTTE EAST, NORTH CAROLINA QUADRANGLE (1988)
0 2,000 4,000 6,000 8,000 10,0001,000 Feet
CONTOUR INTERVAL: 10FT
FIGURENO.
Filename:
Date:
PM:
Drawn By:
Checked By:
Approved By:
Project No.
Scale:
1
2701 Westport Road Charlotte, North Carolina 28208
Phone: [phone] Fax: [phone]
1:24,000
Dec. 2021
Topographic Map
Site
1 inch = 2,000 feet
³
WOF 71167021
WOF
CLC
CLC
71167021.topo
Site Diagram FIGNUOR.E
NC Center for Geographic Information & Analysis
Legend
Site BoundaryTax Parcels
Brownfields Indoor Air and Sub-Slab Soil Gas Testing
Caraustar and Savona MillsBrownfields Site No. 23061-19-060
Charlotte, Mecklenburg County, North Carolina2701 Westport Road Charlotte, North Carolina 28208Phone: [phone] Fax: [phone]
³
0 400 800200Feet
PM:
Drawn By:
Checked By:
Approved By:
WOF
WOF
CLC
CLC
Project No:
Scale:
Filename:
Date:Dec 2021
71167021_IA_2
1 inch = 400 feet
71167021
2South Turner AvenueChamberlain Avenue
S t a t e S t r e e t
Former CaraustarWarehouse
Savona MillsBuilding
Former WikoffColor Building
Blue BlazeBrewing
Rozzelles Ferry Road
C o x e A v e n u e
Soil Vapor and Indoor Air Sample Location Map - Savona Mill Building FIGNUOR.E
NC Center for Geographic Information & Analysis
Legend
Indoor Air Samples
Soil Vapor Samples
Site BoundaryTax Parcels
Brownfields Indoor Air TestingCaraustar and Savona MillsBrownfields Site No. 23061-19-0602701 Westport Road Charlotte, North Carolina 28208 Charlotte, Mecklenburg County, North CarolinaPhone: [phone] Fax: [phone]
0 170 34085Feet
PM:
Drawn By:
Checked By:
Approved By:
WOF
WOF
MNM
MNM
Project No:
Scale:
Filename:
Date:December 2021
1 inch = 170 feet
71167021
3South Turner Avenue2020-SV-04
2020-SV-03
2020-SV-02
2020-SV-01
S t a t e S t r e e t
C o x e A v e n u e
2021-SV-11 and 2021-SV-11B
2021-SV-12
2021-IA-01
2021-IA-02

APPENDIX A
FIELD NOTES/DOCUMENTATION

Brownfields Indoor Air Testing Report
Caraustar and Savona Mills (NCBP #23061-19-060) ■ Charlotte, NC
Photos Taken: Nov. 8, 11, and 12, 2021 ■ Terracon Project No. 71167021

Photo #1 View of enclosed area in which
2021-IA-01 was collected.
Photo #2 View of enclosed area in which
2021-IA-01 was collected.

Photo #3 View of lead abatement sealants
removed from site prior to sampling.
Photo #4 View of lead abatement sealants
removed from site prior to sampling.

Photo #5 View of 2021-IA-01. Photo #6 View of sealed corehole within
concrete outside the 2021-IA-02
sample enclosure area.
Brownfields Indoor Air Testing Report
Caraustar and Savona Mills (NCBP #23061-19-060) ■ Charlotte, NC
Photos Taken: Nov. 8, 11, and 12, 2021 ■ Terracon Project No. 71167021

Photo #7 View of low-VOC spray glue
removed from 2021-IA-02 sample
enclosure area at outset of sampling.
Photo #8 View of 2021-IA-02.

Photo #9 View of 2021-IA-02. Photo #10 View of 2021-SV-11B location
adjacent to 2021-IA-02.

Photo #11 View of 2021-SV-11B vapor pin. Photo #12 View of soil vapor sampling set
up at 2021-SV-11B.

Brownfields Indoor Air Testing Report
Caraustar and Savona Mills (NCBP #23061-19-060) ■ Charlotte, NC
Photos Taken: Nov. 8, 11, and 12, 2021 ■ Terracon Project No. 71167021

Photo #13 View of entrance to crawl space
beneath 2021-IA-01 area.
Photo #14 View of crawl space beneath
2021-IA-01 area.

Photo #15 View of crawl space beneath
2021-IA-01 area.
Photo #16 View of crawl space beneath
2021-IA-01 area.

APPENDIX B
LABORATORY ANALYTICAL REPORTS

39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
November 19, 2021
Will Frazier
Terracon - Charlotte, NC
2701 Westport Road
Charlotte, NC 28208
Project Location: Charlotte, NC
Client Job Number:
Project Number: 71167021
Laboratory Work Order Number: 21K1098
Enclosed are results of analyses for samples as received by the laboratory on November 15, 2021. If you have any questions
concerning this report, please feel free to contact me.
Sincerely,
Kerry K. McGee
Project Manager
QA Officer
Katherine Allen
Laboratory Manager
Daren Damboragian
Page 1 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL SUMMARY
11/19/2021Terracon - Charlotte, NC
2701 Westport Road
Charlotte, NC 28208
ATTN: Will Frazier
71167021
21K1098
The results of analyses performed on the following samples submitted to Con-Test, a Pace Analytical Laboratory, are found in this report.
PROJECT LOCATION:
PURCHASE ORDER NUMBER:
PROJECT NUMBER:
REPORT DATE:
WORK ORDER NUMBER:
FIELD SAMPLE #LAB ID:MATRIX TESTSAMPLE DESCRIPTION SUB LAB
Charlotte, NC
2021-IA-01 21K1098-01 Indoor air EPA TO-15
2021-IA-02 21K1098-02 Indoor air EPA TO-15
2021-SV-11B 21K1098-03 Sub Slab EPA TO-15
Page 2 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
CASE NARRATIVE SUMMARY
All reported results are within defined laboratory quality control objectives unless listed below or otherwise qualified in this report.
Page 3 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
EPA TO-15
Qualifications:
Laboratory fortified blank/laboratory control sample recovery outside of control limits. Data validation is not affected since all results are "not
detected" for all samples in this batch for this compound and bias is on the high side.
Analyte & Samples(s) Qualified:
Vinyl Acetate
B295058-BS1, B295141-BS1
Laboratory fortified blank/laboratory control sample recovery is outside of control limits. Reported value for this compound is likely to be
biased on the low side.
Analyte & Samples(s) Qualified:
Ethyl Acetate
21K1098-01[2021-IA-01], 21K1098-02[2021-IA-02], 21K1098-03[2021-SV-11B], B295058-BLK1, B295058-BS1, B295141-BLK1, B295141-BS1
Laboratory fortified blank/laboratory control sample recovery is outside of control limits. Reported value for this compound is likely to be
biased on the high side.
Analyte & Samples(s) Qualified:
Ethanol
21K1098-01[2021-IA-01], 21K1098-02[2021-IA-02], B295058-BS1
Elevated reporting limit due to high concentration of target compounds.
Analyte & Samples(s) Qualified:
21K1098-03[2021-SV-11B]
Initial calibration verification (ICV) did not meet method specifications and was biased on the low side for this compound. Reported result is
estimated.
Analyte & Samples(s) Qualified:
Ethyl Acetate
21K1098-01[2021-IA-01], 21K1098-02[2021-IA-02], B295058-BLK1, B295058-BS1
Initial calibration verification (ICV) did not meet method specifications and was biased on the high side for this compound. Reported result is
estimated.
Analyte & Samples(s) Qualified:
Ethanol
21K1098-01[2021-IA-01], 21K1098-02[2021-IA-02], 21K1098-03[2021-SV-11B], B295058-BS1, B295141-BS1
Initial calibration verification (ICV) did not meet method specifications and was biased on the high side. Data validation is not affected since
sample result was "not detected" for this compound.
Analyte & Samples(s) Qualified:
Vinyl Acetate
B295058-BS1, B295141-BS1
Page 4 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
The results of analyses reported only relate to samples submitted to Con-Test, a Pace Analytical Laboratory, for testing.
I certify that the analyses listed above, unless specifically listed as subcontracted, if any, were performed under my direction according to the approved methodologies listed
in this document, and that based upon my inquiry of those individuals immediately responsible for obtaining the information, the material contained in this report is, to the
best of my knowledge and belief, accurate and complete.
Lisa A. Worthington
Technical Representative
Page 5 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 11/15/2021
Work Order: 21K1098Sample Description/Location:
Field Sample #: 2021-IA-01
Sample ID: 21K1098-01
Sample Matrix: Indoor air
Initial Vacuum(in Hg): -30
Final Vacuum(in Hg): -9
Receipt Vacuum(in Hg): -8.8
Sampled: 11/11/2021 15:57
Canister ID: 1016
Flow Controller ID: 3571
Sub Description/Location:
Canister Size: 6 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 8 hr
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone 41 4.0 11/18/21 6:51 BRF98 29.52.4 5.7
Benzene 0.56 0.035 11/17/21 18:32 BRF1.8 0.6980.110.0084 0.027
Benzyl chloride ND 0.035 11/17/21 18:32 BRFND0.6980.180.016 0.081
Bromodichloromethane ND 0.035 11/17/21 18:32 BRFND0.6980.230.013 0.085
Bromoform ND 0.035 11/17/21 18:32 BRFND0.6980.360.013 0.13
Bromomethane ND 0.035 11/17/21 18:32 BRFND0.6980.140.028 0.11
1,3-Butadiene ND 0.035 11/17/21 18:32 BRFND0.6980.0770.024 0.054
2-Butanone (MEK)0.98 1.4 11/17/21 18:32 BRFJ2.9 0.6984.10.12 0.34
Carbon Disulfide ND 0.35 11/17/21 18:32 BRFND0.6981.10.089 0.28
Carbon Tetrachloride 0.069 0.035 11/17/21 18:32 BRF0.43 0.6980.220.011 0.066
Chlorobenzene ND 0.035 11/17/21 18:32 BRFND0.6980.160.010 0.048
Chloroethane ND 0.035 11/17/21 18:32 BRFND0.6980.0920.025 0.067
Chloroform 0.052 0.035 11/17/21 18:32 BRF0.25 0.6980.170.0084 0.041
Chloromethane 0.47 0.070 11/17/21 18:32 BRF0.97 0.6980.140.014 0.030
Cyclohexane 0.30 0.035 11/17/21 18:32 BRF1.0 0.6980.120.023 0.079
Dibromochloromethane ND 0.035 11/17/21 18:32 BRFND0.6980.300.012 0.100
1,2-Dibromoethane (EDB)ND 0.035 11/17/21 18:32 BRFND0.6980.270.0098 0.075
1,2-Dichlorobenzene ND 0.035 11/17/21 18:32 BRFND0.6980.210.013 0.078
1,3-Dichlorobenzene ND 0.035 11/17/21 18:32 BRFND0.6980.210.0084 0.051
1,4-Dichlorobenzene 0.054 0.035 11/17/21 18:32 BRF0.32 0.6980.210.014 0.085
Dichlorodifluoromethane (Freon 12)0.48 0.035 11/17/21 18:32 BRF2.4 0.6980.170.011 0.053
1,1-Dichloroethane ND 0.035 11/17/21 18:32 BRFND0.6980.140.012 0.047
1,2-Dichloroethane ND 0.035 11/17/21 18:32 BRFND0.6980.140.013 0.052
1,1-Dichloroethylene ND 0.035 11/17/21 18:32 BRFND0.6980.140.014 0.054
cis-1,2-Dichloroethylene ND 0.035 11/17/21 18:32 BRFND0.6980.140.012 0.047
trans-1,2-Dichloroethylene ND 0.035 11/17/21 18:32 BRFND0.6980.140.012 0.048
1,2-Dichloropropane ND 0.035 11/17/21 18:32 BRFND0.6980.160.013 0.058
cis-1,3-Dichloropropene ND 0.035 11/17/21 18:32 BRFND0.6980.160.016 0.073
trans-1,3-Dichloropropene ND 0.035 11/17/21 18:32 BRFND0.6980.160.011 0.049
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)0.018 0.035 11/17/21 18:32 BRFJ0.13 0.6980.240.012 0.084
1,4-Dioxane ND 0.35 11/17/21 18:32 BRFND0.6981.30.024 0.085
Ethanol 10 1.4 11/17/21 18:32 BRFL-05, V-35 20 0.6982.60.42 0.80
Ethyl Acetate 0.37 0.35 11/17/21 18:32 BRFL-03, V-34 1.3 0.6981.30.21 0.75
Ethylbenzene 0.34 0.035 11/17/21 18:32 BRF1.5 0.6980.150.0090 0.039
4-Ethyltoluene 0.082 0.035 11/17/21 18:32 BRF0.40 0.6980.170.011 0.053
Heptane 0.84 0.035 11/17/21 18:32 BRF3.5 0.6980.140.014 0.059
Hexachlorobutadiene ND 0.035 11/17/21 18:32 BRFND0.6980.370.019 0.21
Hexane 3.4 1.4 11/17/21 18:32 BRF12 0.6984.90.11 0.40
2-Hexanone (MBK)ND 0.035 11/17/21 18:32 BRFND0.6980.140.018 0.072
Isopropanol 1.0 1.4 11/17/21 18:32 BRFJ2.5 0.6983.40.32 0.79
Methyl tert-Butyl Ether (MTBE)ND 0.035 11/17/21 18:32 BRFND0.6980.130.014 0.050
Methylene Chloride 0.43 0.35 11/17/21 18:32 BRF1.5 0.6981.20.080 0.28
4-Methyl-2-pentanone (MIBK)ND 0.035 11/17/21 18:32 BRFND0.6980.140.018 0.073
Naphthalene 0.12 0.035 11/17/21 18:32 BRF0.61 0.6980.180.022 0.12
Propene ND 1.4 11/17/21 18:32 BRFND0.6982.40.12 0.20
Styrene 0.13 0.035 11/17/21 18:32 BRF0.54 0.6980.150.011 0.047
1,1,2,2-Tetrachloroethane ND 0.035 11/17/21 18:32 BRFND0.6980.240.011 0.073
Page 6 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 11/15/2021
Work Order: 21K1098Sample Description/Location:
Field Sample #: 2021-IA-01
Sample ID: 21K1098-01
Sample Matrix: Indoor air
Initial Vacuum(in Hg): -30
Final Vacuum(in Hg): -9
Receipt Vacuum(in Hg): -8.8
Sampled: 11/11/2021 15:57
Canister ID: 1016
Flow Controller ID: 3571
Sub Description/Location:
Canister Size: 6 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 8 hr
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene 0.18 0.035 11/17/21 18:32 BRF1.2 0.6980.240.010 0.070
Tetrahydrofuran 0.18 0.35 11/17/21 18:32 BRFJ0.52 0.6981.00.086 0.25
Toluene 2.1 0.035 11/17/21 18:32 BRF7.9 0.6980.130.015 0.055
1,2,4-Trichlorobenzene ND 0.035 11/17/21 18:32 BRFND0.6980.260.024 0.18
1,1,1-Trichloroethane 0.032 0.035 11/17/21 18:32 BRFJ0.18 0.6980.190.016 0.088
1,1,2-Trichloroethane ND 0.035 11/17/21 18:32 BRFND0.6980.190.014 0.076
Trichloroethylene ND 0.035 11/17/21 18:32 BRFND0.6980.190.013 0.069
Trichlorofluoromethane (Freon 11)0.23 0.14 11/17/21 18:32 BRF1.3 0.6980.780.014 0.078
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)0.080 0.14 11/17/21 18:32 BRFJ0.61 0.6981.10.012 0.095
1,2,4-Trimethylbenzene 0.38 0.035 11/17/21 18:32 BRF1.9 0.6980.170.010 0.051
1,3,5-Trimethylbenzene 0.093 0.035 11/17/21 18:32 BRF0.46 0.6980.170.0096 0.047
Vinyl Acetate ND 0.70 11/17/21 18:32 BRFND0.6982.50.065 0.23
Vinyl Chloride ND 0.035 11/17/21 18:32 BRFND0.6980.0890.014 0.035
m&p-Xylene 0.80 0.070 11/17/21 18:32 BRF3.5 0.6980.300.019 0.084
o-Xylene 0.46 0.035 11/17/21 18:32 BRF2.0 0.6980.150.0093 0.041
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)101 11/17/21 18:3270-130
4-Bromofluorobenzene (1)103 11/18/21 6:5170-130
Page 7 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 11/15/2021
Work Order: 21K1098Sample Description/Location:
Field Sample #: 2021-IA-02
Sample ID: 21K1098-02
Sample Matrix: Indoor air
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -8.5
Receipt Vacuum(in Hg): -8.9
Sampled: 11/11/2021 15:58
Canister ID: 1989
Flow Controller ID: 3553
Sub Description/Location:
Canister Size: 6 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 8 hr
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone 79 8.0 11/18/21 7:21 BRF190 4194.8 11
Benzene 0.58 0.035 11/17/21 19:09 BRF1.9 0.6980.110.0084 0.027
Benzyl chloride ND 0.035 11/17/21 19:09 BRFND0.6980.180.016 0.081
Bromodichloromethane ND 0.035 11/17/21 19:09 BRFND0.6980.230.013 0.085
Bromoform ND 0.035 11/17/21 19:09 BRFND0.6980.360.013 0.13
Bromomethane ND 0.035 11/17/21 19:09 BRFND0.6980.140.028 0.11
1,3-Butadiene ND 0.035 11/17/21 19:09 BRFND0.6980.0770.024 0.054
2-Butanone (MEK)1.5 1.4 11/17/21 19:09 BRF4.3 0.6984.10.12 0.34
Carbon Disulfide ND 0.35 11/17/21 19:09 BRFND0.6981.10.089 0.28
Carbon Tetrachloride 0.070 0.035 11/17/21 19:09 BRF0.44 0.6980.220.011 0.066
Chlorobenzene ND 0.035 11/17/21 19:09 BRFND0.6980.160.010 0.048
Chloroethane ND 0.035 11/17/21 19:09 BRFND0.6980.0920.025 0.067
Chloroform 0.065 0.035 11/17/21 19:09 BRF0.32 0.6980.170.0084 0.041
Chloromethane 0.50 0.070 11/17/21 19:09 BRF1.0 0.6980.140.014 0.030
Cyclohexane 0.30 0.035 11/17/21 19:09 BRF1.0 0.6980.120.023 0.079
Dibromochloromethane ND 0.035 11/17/21 19:09 BRFND0.6980.300.012 0.100
1,2-Dibromoethane (EDB)ND 0.035 11/17/21 19:09 BRFND0.6980.270.0098 0.075
1,2-Dichlorobenzene ND 0.035 11/17/21 19:09 BRFND0.6980.210.013 0.078
1,3-Dichlorobenzene ND 0.035 11/17/21 19:09 BRFND0.6980.210.0084 0.051
1,4-Dichlorobenzene 0.094 0.035 11/17/21 19:09 BRF0.57 0.6980.210.014 0.085
Dichlorodifluoromethane (Freon 12)0.48 0.035 11/17/21 19:09 BRF2.4 0.6980.170.011 0.053
1,1-Dichloroethane ND 0.035 11/17/21 19:09 BRFND0.6980.140.012 0.047
1,2-Dichloroethane ND 0.035 11/17/21 19:09 BRFND0.6980.140.013 0.052
1,1-Dichloroethylene ND 0.035 11/17/21 19:09 BRFND0.6980.140.014 0.054
cis-1,2-Dichloroethylene ND 0.035 11/17/21 19:09 BRFND0.6980.140.012 0.047
trans-1,2-Dichloroethylene ND 0.035 11/17/21 19:09 BRFND0.6980.140.012 0.048
1,2-Dichloropropane ND 0.035 11/17/21 19:09 BRFND0.6980.160.013 0.058
cis-1,3-Dichloropropene ND 0.035 11/17/21 19:09 BRFND0.6980.160.016 0.073
trans-1,3-Dichloropropene ND 0.035 11/17/21 19:09 BRFND0.6980.160.011 0.049
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)0.018 0.035 11/17/21 19:09 BRFJ0.13 0.6980.240.012 0.084
1,4-Dioxane ND 0.35 11/17/21 19:09 BRFND0.6981.30.024 0.085
Ethanol 13 1.4 11/17/21 19:09 BRFL-05, V-35 25 0.6982.60.42 0.80
Ethyl Acetate 0.58 0.35 11/17/21 19:09 BRFL-03, V-34 2.1 0.6981.30.21 0.75
Ethylbenzene 0.30 0.035 11/17/21 19:09 BRF1.3 0.6980.150.0090 0.039
4-Ethyltoluene 0.12 0.035 11/17/21 19:09 BRF0.57 0.6980.170.011 0.053
Heptane 8.8 0.035 11/17/21 19:09 BRF36 0.6980.140.014 0.059
Hexachlorobutadiene ND 0.035 11/17/21 19:09 BRFND0.6980.370.019 0.21
Hexane 3.2 1.4 11/17/21 19:09 BRF11 0.6984.90.11 0.40
2-Hexanone (MBK)ND 0.035 11/17/21 19:09 BRFND0.6980.140.018 0.072
Isopropanol 2.4 1.4 11/17/21 19:09 BRF5.9 0.6983.40.32 0.79
Methyl tert-Butyl Ether (MTBE)ND 0.035 11/17/21 19:09 BRFND0.6980.130.014 0.050
Methylene Chloride 0.20 0.35 11/17/21 19:09 BRFJ0.71 0.6981.20.080 0.28
4-Methyl-2-pentanone (MIBK)ND 0.035 11/17/21 19:09 BRFND0.6980.140.018 0.073
Naphthalene 0.10 0.035 11/17/21 19:09 BRF0.55 0.6980.180.022 0.12
Propene ND 1.4 11/17/21 19:09 BRFND0.6982.40.12 0.20
Styrene 0.18 0.035 11/17/21 19:09 BRF0.77 0.6980.150.011 0.047
1,1,2,2-Tetrachloroethane ND 0.035 11/17/21 19:09 BRFND0.6980.240.011 0.073
Page 8 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 11/15/2021
Work Order: 21K1098Sample Description/Location:
Field Sample #: 2021-IA-02
Sample ID: 21K1098-02
Sample Matrix: Indoor air
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -8.5
Receipt Vacuum(in Hg): -8.9
Sampled: 11/11/2021 15:58
Canister ID: 1989
Flow Controller ID: 3553
Sub Description/Location:
Canister Size: 6 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 8 hr
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene 0.23 0.035 11/17/21 19:09 BRF1.6 0.6980.240.010 0.070
Tetrahydrofuran ND 0.35 11/17/21 19:09 BRFND0.6981.00.086 0.25
Toluene 1.9 0.035 11/17/21 19:09 BRF7.0 0.6980.130.015 0.055
1,2,4-Trichlorobenzene ND 0.035 11/17/21 19:09 BRFND0.6980.260.024 0.18
1,1,1-Trichloroethane ND 0.035 11/17/21 19:09 BRFND0.6980.190.016 0.088
1,1,2-Trichloroethane ND 0.035 11/17/21 19:09 BRFND0.6980.190.014 0.076
Trichloroethylene 0.015 0.035 11/17/21 19:09 BRFJ0.079 0.6980.190.013 0.069
Trichlorofluoromethane (Freon 11)0.23 0.14 11/17/21 19:09 BRF1.3 0.6980.780.014 0.078
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)0.064 0.14 11/17/21 19:09 BRFJ0.49 0.6981.10.012 0.095
1,2,4-Trimethylbenzene 0.51 0.035 11/17/21 19:09 BRF2.5 0.6980.170.010 0.051
1,3,5-Trimethylbenzene 0.16 0.035 11/17/21 19:09 BRF0.77 0.6980.170.0096 0.047
Vinyl Acetate ND 0.70 11/17/21 19:09 BRFND0.6982.50.065 0.23
Vinyl Chloride ND 0.035 11/17/21 19:09 BRFND0.6980.0890.014 0.035
m&p-Xylene 0.94 0.070 11/17/21 19:09 BRF4.1 0.6980.300.019 0.084
o-Xylene 0.41 0.035 11/17/21 19:09 BRF1.8 0.6980.150.0093 0.041
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)101 11/18/21 7:2170-130
4-Bromofluorobenzene (1)101 11/17/21 19:0970-130
Page 9 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 11/15/2021
Work Order: 21K1098Sample Description/Location:
Field Sample #: 2021-SV-11B
Sample ID: 21K1098-03
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -26
Final Vacuum(in Hg): -3
Receipt Vacuum(in Hg): -5.1
Sampled: 11/12/2021 08:49
Canister ID: 2540
Flow Controller ID: 4153
Sub Description/Location:
Canister Size: 1 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 10 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
Sample Flags: RL-11
MDL MDL
Acetone 120 40 11/18/21 5:45 BRF280 20952457
Benzene ND 1.0 11/18/21 5:45 BRFND203.20.24 0.77
Benzyl chloride ND 1.0 11/18/21 5:45 BRFND205.20.45 2.3
Bromodichloromethane ND 1.0 11/18/21 5:45 BRFND206.70.36 2.4
Bromoform ND 1.0 11/18/21 5:45 BRFND20100.36 3.7
Bromomethane ND 1.0 11/18/21 5:45 BRFND203.90.82 3.2
1,3-Butadiene ND 1.0 11/18/21 5:45 BRFND202.20.70 1.5
2-Butanone (MEK)9.5 40 11/18/21 5:45 BRFJ28 201203.3 9.8
Carbon Disulfide ND 10 11/18/21 5:45 BRFND20312.5 7.9
Carbon Tetrachloride ND 1.0 11/18/21 5:45 BRFND206.30.30 1.9
Chlorobenzene ND 1.0 11/18/21 5:45 BRFND204.60.30 1.4
Chloroethane ND 1.0 11/18/21 5:45 BRFND202.60.73 1.9
Chloroform 0.48 1.0 11/18/21 5:45 BRFJ2.3 204.90.24 1.2
Chloromethane ND 2.0 11/18/21 5:45 BRFND204.10.41 0.85
Cyclohexane ND 1.0 11/18/21 5:45 BRFND203.40.66 2.3
Dibromochloromethane ND 1.0 11/18/21 5:45 BRFND208.50.34 2.9
1,2-Dibromoethane (EDB)ND 1.0 11/18/21 5:45 BRFND207.70.28 2.2
1,2-Dichlorobenzene ND 1.0 11/18/21 5:45 BRFND206.00.37 2.2
1,3-Dichlorobenzene ND 1.0 11/18/21 5:45 BRFND206.00.24 1.5
1,4-Dichlorobenzene ND 1.0 11/18/21 5:45 BRFND206.00.41 2.4
Dichlorodifluoromethane (Freon 12)0.56 1.0 11/18/21 5:45 BRFJ2.8 204.90.31 1.5
1,1-Dichloroethane ND 1.0 11/18/21 5:45 BRFND204.00.34 1.4
1,2-Dichloroethane ND 1.0 11/18/21 5:45 BRFND204.00.37 1.5
1,1-Dichloroethylene ND 1.0 11/18/21 5:45 BRFND204.00.39 1.6
cis-1,2-Dichloroethylene ND 1.0 11/18/21 5:45 BRFND204.00.34 1.3
trans-1,2-Dichloroethylene ND 1.0 11/18/21 5:45 BRFND204.00.35 1.4
1,2-Dichloropropane ND 1.0 11/18/21 5:45 BRFND204.60.36 1.7
cis-1,3-Dichloropropene ND 1.0 11/18/21 5:45 BRFND204.50.46 2.1
trans-1,3-Dichloropropene ND 1.0 11/18/21 5:45 BRFND204.50.31 1.4
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 1.0 11/18/21 5:45 BRFND207.00.35 2.4
1,4-Dioxane ND 10 11/18/21 5:45 BRFND20360.68 2.4
Ethanol 140 40 11/18/21 5:45 BRFV-35 270 20751223
Ethyl Acetate ND 10 11/18/21 5:45 BRFL-03 ND 20365.9 21
Ethylbenzene 0.46 1.0 11/18/21 5:45 BRFJ2.0 204.30.26 1.1
4-Ethyltoluene 32 1.0 11/18/21 5:45 BRF160 204.90.31 1.5
Heptane 0.42 1.0 11/18/21 5:45 BRFJ1.7 204.10.41 1.7
Hexachlorobutadiene ND 1.0 11/18/21 5:45 BRFND20110.56 5.9
Hexane ND 40 11/18/21 5:45 BRFND201403.3 12
2-Hexanone (MBK)ND 1.0 11/18/21 5:45 BRFND204.10.50 2.1
Isopropanol 59 40 11/18/21 5:45 BRF150 20989.2 23
Methyl tert-Butyl Ether (MTBE)ND 1.0 11/18/21 5:45 BRFND203.60.40 1.4
Methylene Chloride ND 10 11/18/21 5:45 BRFND20352.3 8.0
4-Methyl-2-pentanone (MIBK)ND 1.0 11/18/21 5:45 BRFND204.10.51 2.1
Naphthalene 1.3 1.0 11/18/21 5:45 BRF6.7 205.20.63 3.3
Propene ND 40 11/18/21 5:45 BRFND20693.3 5.8
Styrene ND 1.0 11/18/21 5:45 BRFND204.30.32 1.3
1,1,2,2-Tetrachloroethane ND 1.0 11/18/21 5:45 BRFND206.90.31 2.1
Page 10 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 11/15/2021
Work Order: 21K1098Sample Description/Location:
Field Sample #: 2021-SV-11B
Sample ID: 21K1098-03
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -26
Final Vacuum(in Hg): -3
Receipt Vacuum(in Hg): -5.1
Sampled: 11/12/2021 08:49
Canister ID: 2540
Flow Controller ID: 4153
Sub Description/Location:
Canister Size: 1 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 10 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
Sample Flags: RL-11
MDL MDL
Tetrachloroethylene 24 1.0 11/18/21 5:45 BRF160 206.80.30 2.0
Tetrahydrofuran ND 10 11/18/21 5:45 BRFND20292.5 7.3
Toluene 1.5 1.0 11/18/21 5:45 BRF5.8 203.80.42 1.6
1,2,4-Trichlorobenzene ND 1.0 11/18/21 5:45 BRFND207.40.70 5.2
1,1,1-Trichloroethane ND 1.0 11/18/21 5:45 BRFND205.50.46 2.5
1,1,2-Trichloroethane ND 1.0 11/18/21 5:45 BRFND205.50.40 2.2
Trichloroethylene ND 1.0 11/18/21 5:45 BRFND205.40.37 2.0
Trichlorofluoromethane (Freon 11)ND 4.0 11/18/21 5:45 BRFND20220.40 2.2
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 4.0 11/18/21 5:45 BRFND20310.35 2.7
1,2,4-Trimethylbenzene 570 1.0 11/18/21 5:45 BRF2800 204.90.30 1.5
1,3,5-Trimethylbenzene 400 1.0 11/18/21 5:45 BRF2000 204.90.27 1.3
Vinyl Acetate ND 20 11/18/21 5:45 BRFND20701.9 6.6
Vinyl Chloride ND 1.0 11/18/21 5:45 BRFND202.60.40 1.0
m&p-Xylene 2.5 2.0 11/18/21 5:45 BRF11 208.70.55 2.4
o-Xylene ND 1.0 11/18/21 5:45 BRFND204.30.27 1.2
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)95.7 11/18/21 5:4570-130
Page 11 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
Sample Extraction Data
Prep Method: TO-15 Prep-EPA TO-15
Lab Number [Field ID]Batch Date
Pressure
Dilution
Pre
Dilution
Pre-Dil
Initial
mL
Pre-Dil
Final
mL
Default
Injection
mL
Actual
Injection
mL
21K1098-01 [2021-IA-01]B295058 1.5 1 N/A 1000 200 430 11/17/21
21K1098-01RE1 [2021-IA-01]B295058 1.5 1 N/A 1000 200 150 11/17/21
21K1098-02 [2021-IA-02]B295058 1.5 1 N/A 1000 200 430 11/17/21
21K1098-02RE1 [2021-IA-02]B295058 1.5 1 N/A 1000 200 75 11/17/21
Prep Method: TO-15 Prep-EPA TO-15
Lab Number [Field ID]Batch Date
Pressure
Dilution
Pre
Dilution
Pre-Dil
Initial
mL
Pre-Dil
Final
mL
Default
Injection
mL
Actual
Injection
mL
21K1098-03 [2021-SV-11B]B295141 1.5 1 N/A 1000 400 30 11/17/21
Page 12 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ug/m3 Spike Level
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Flag/Qual Analyte
Air Toxics by EPA Compendium Methods - Quality Control
QUALITY CONTROL
RL
ppbv
Results RL Results ppbv
Batch B295058 - TO-15 Prep
Blank (B295058-BLK1)Prepared & Analyzed: 11/17/21
1.4NDAcetone
0.035NDBenzene
0.035NDBenzyl chloride
0.035NDBromodichloromethane
0.035NDBromoform
0.035NDBromomethane
0.035ND1,3-Butadiene
1.4ND2-Butanone (MEK)
0.35NDCarbon Disulfide
0.035NDCarbon Tetrachloride
0.035NDChlorobenzene
0.035NDChloroethane
0.035NDChloroform
0.070NDChloromethane
0.035NDCyclohexane
0.035NDDibromochloromethane
0.035ND1,2-Dibromoethane (EDB)
0.035ND1,2-Dichlorobenzene
0.035ND1,3-Dichlorobenzene
0.035ND1,4-Dichlorobenzene
0.035NDDichlorodifluoromethane (Freon 12)
0.035ND1,1-Dichloroethane
0.035ND1,2-Dichloroethane
0.035ND1,1-Dichloroethylene
0.035NDcis-1,2-Dichloroethylene
0.035NDtrans-1,2-Dichloroethylene
0.035ND1,2-Dichloropropane
0.035NDcis-1,3-Dichloropropene
0.035NDtrans-1,3-Dichloropropene
0.035ND1,2-Dichloro-1,1,2,2-tetrafluoroethane
(Freon 114)
0.35ND1,4-Dioxane
1.4NDEthanol
0.35 L-03, V-34NDEthyl Acetate
0.035NDEthylbenzene
0.035ND4-Ethyltoluene
0.035NDHeptane
0.035NDHexachlorobutadiene
1.4NDHexane
0.035ND2-Hexanone (MBK)
1.4NDIsopropanol
0.035NDMethyl tert-Butyl Ether (MTBE)
0.35NDMethylene Chloride
0.035ND4-Methyl-2-pentanone (MIBK)
0.035NDNaphthalene
1.4NDPropene
0.035NDStyrene
Page 13 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ug/m3 Spike Level
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Flag/Qual Analyte
Air Toxics by EPA Compendium Methods - Quality Control
QUALITY CONTROL
RL
ppbv
Results RL Results ppbv
Batch B295058 - TO-15 Prep
Blank (B295058-BLK1)Prepared & Analyzed: 11/17/21
0.035ND1,1,2,2-Tetrachloroethane
0.035NDTetrachloroethylene
0.35NDTetrahydrofuran
0.035NDToluene
0.035ND1,2,4-Trichlorobenzene
0.035ND1,1,1-Trichloroethane
0.035ND1,1,2-Trichloroethane
0.035NDTrichloroethylene
0.14NDTrichlorofluoromethane (Freon 11)
0.14ND1,1,2-Trichloro-1,2,2-trifluoroethane (Freon
113)
0.035ND1,2,4-Trimethylbenzene
0.035ND1,3,5-Trimethylbenzene
0.70NDVinyl Acetate
0.035NDVinyl Chloride
0.070NDm&p-Xylene
0.035NDo-Xylene
8.00 70-130Surrogate: 4-Bromofluorobenzene (1)1018.08
LCS (B295058-BS1)Prepared & Analyzed: 11/17/21
5.00 70-13082.34.12Acetone
5.00 70-13091.94.59Benzene
5.00 70-13079.23.96Benzyl chloride
5.00 70-13092.94.65Bromodichloromethane
5.00 70-13090.84.54Bromoform
5.00 70-13093.04.65Bromomethane
5.00 70-13088.64.431,3-Butadiene
5.00 70-13084.64.232-Butanone (MEK)
5.00 70-13088.34.41Carbon Disulfide
5.00 70-13095.04.75Carbon Tetrachloride
5.00 70-13090.74.54Chlorobenzene
5.00 70-13092.54.62Chloroethane
5.00 70-13089.14.46Chloroform
5.00 70-13086.44.32Chloromethane
5.00 70-13095.34.77Cyclohexane
5.00 70-13088.74.44Dibromochloromethane
5.00 70-13090.74.541,2-Dibromoethane (EDB)
5.00 70-13092.04.601,2-Dichlorobenzene
5.00 70-13091.04.551,3-Dichlorobenzene
5.00 70-13075.13.761,4-Dichlorobenzene
5.00 70-13097.64.88Dichlorodifluoromethane (Freon 12)
5.00 70-13089.94.501,1-Dichloroethane
5.00 70-13091.94.601,2-Dichloroethane
5.00 70-13094.04.701,1-Dichloroethylene
5.00 70-13092.14.60cis-1,2-Dichloroethylene
5.00 70-13092.34.62trans-1,2-Dichloroethylene
5.00 70-13089.34.461,2-Dichloropropane
Page 14 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ug/m3 Spike Level
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Flag/Qual Analyte
Air Toxics by EPA Compendium Methods - Quality Control
QUALITY CONTROL
RL
ppbv
Results RL Results ppbv
Batch B295058 - TO-15 Prep
LCS (B295058-BS1)Prepared & Analyzed: 11/17/21
5.00 70-13095.74.79cis-1,3-Dichloropropene
5.00 70-13098.34.91trans-1,3-Dichloropropene
5.00 70-13090.34.511,2-Dichloro-1,1,2,2-tetrafluoroethane
(Freon 114)
5.00 70-13093.54.681,4-Dioxane
5.00 L-05, V-3570-1301396.95Ethanol *
5.00 L-03, V-3470-13060.23.01Ethyl Acetate *
5.00 70-13093.24.66Ethylbenzene
5.00 70-13097.84.894-Ethyltoluene
5.00 70-13092.24.61Heptane
5.00 70-13082.84.14Hexachlorobutadiene
5.00 70-13095.34.76Hexane
5.00 70-13094.84.742-Hexanone (MBK)
5.00 70-13078.13.90Isopropanol
5.00 70-13088.94.45Methyl tert-Butyl Ether (MTBE)
5.00 70-13088.14.40Methylene Chloride
5.00 70-13098.54.924-Methyl-2-pentanone (MIBK)
5.00 70-13077.23.86Naphthalene
5.00 70-1301085.38Propene
5.00 70-13098.04.90Styrene
5.00 70-13093.24.661,1,2,2-Tetrachloroethane
5.00 70-13090.04.50Tetrachloroethylene
5.00 70-13092.24.61Tetrahydrofuran
5.00 70-13092.44.62Toluene
5.00 70-13071.83.591,2,4-Trichlorobenzene
5.00 70-1301015.071,1,1-Trichloroethane
5.00 70-13095.44.771,1,2-Trichloroethane
5.00 70-13098.74.94Trichloroethylene
5.00 70-13097.14.86Trichlorofluoromethane (Freon 11)
5.00 70-13099.74.981,1,2-Trichloro-1,2,2-trifluoroethane (Freon
113)
5.00 70-13091.64.581,2,4-Trimethylbenzene
5.00 70-13092.94.641,3,5-Trimethylbenzene
5.00 L-01, V-3670-1301447.22Vinyl Acetate *
5.00 70-13085.44.27Vinyl Chloride
10.0 70-13094.69.46m&p-Xylene
5.00 70-13096.04.80o-Xylene
8.00 70-130Surrogate: 4-Bromofluorobenzene (1)1038.21
Page 15 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ug/m3 Spike Level
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Flag/Qual Analyte
Air Toxics by EPA Compendium Methods - Quality Control
QUALITY CONTROL
RL
ppbv
Results RL Results ppbv
Batch B295141 - TO-15 Prep
Blank (B295141-BLK1)Prepared & Analyzed: 11/17/21
1.4NDAcetone
0.035NDBenzene
0.035NDBenzyl chloride
0.035NDBromodichloromethane
0.035NDBromoform
0.035NDBromomethane
0.035ND1,3-Butadiene
1.4ND2-Butanone (MEK)
0.35NDCarbon Disulfide
0.035NDCarbon Tetrachloride
0.035NDChlorobenzene
0.035NDChloroethane
0.035NDChloroform
0.070NDChloromethane
0.035NDCyclohexane
0.035NDDibromochloromethane
0.035ND1,2-Dibromoethane (EDB)
0.035ND1,2-Dichlorobenzene
0.035ND1,3-Dichlorobenzene
0.035ND1,4-Dichlorobenzene
0.035NDDichlorodifluoromethane (Freon 12)
0.035ND1,1-Dichloroethane
0.035ND1,2-Dichloroethane
0.035ND1,1-Dichloroethylene
0.035NDcis-1,2-Dichloroethylene
0.035NDtrans-1,2-Dichloroethylene
0.035ND1,2-Dichloropropane
0.035NDcis-1,3-Dichloropropene
0.035NDtrans-1,3-Dichloropropene
0.035ND1,2-Dichloro-1,1,2,2-tetrafluoroethane
(Freon 114)
0.35ND1,4-Dioxane
1.4NDEthanol
0.35 L-03NDEthyl Acetate
0.035NDEthylbenzene
0.035ND4-Ethyltoluene
0.035NDHeptane
0.035NDHexachlorobutadiene
1.4NDHexane
0.035ND2-Hexanone (MBK)
1.4NDIsopropanol
0.035NDMethyl tert-Butyl Ether (MTBE)
0.35NDMethylene Chloride
0.035ND4-Methyl-2-pentanone (MIBK)
0.035NDNaphthalene
1.4NDPropene
0.035NDStyrene
Page 16 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ug/m3 Spike Level
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Flag/Qual Analyte
Air Toxics by EPA Compendium Methods - Quality Control
QUALITY CONTROL
RL
ppbv
Results RL Results ppbv
Batch B295141 - TO-15 Prep
Blank (B295141-BLK1)Prepared & Analyzed: 11/17/21
0.035ND1,1,2,2-Tetrachloroethane
0.035NDTetrachloroethylene
0.35NDTetrahydrofuran
0.035NDToluene
0.035ND1,2,4-Trichlorobenzene
0.035ND1,1,1-Trichloroethane
0.035ND1,1,2-Trichloroethane
0.035NDTrichloroethylene
0.14NDTrichlorofluoromethane (Freon 11)
0.14ND1,1,2-Trichloro-1,2,2-trifluoroethane (Freon
113)
0.035ND1,2,4-Trimethylbenzene
0.035ND1,3,5-Trimethylbenzene
0.70NDVinyl Acetate
0.035NDVinyl Chloride
0.070NDm&p-Xylene
0.035NDo-Xylene
8.00 70-130Surrogate: 4-Bromofluorobenzene (1)95.57.64
LCS (B295141-BS1)Prepared & Analyzed: 11/17/21
5.00 70-13075.63.78Acetone
5.00 70-13085.34.26Benzene
5.00 70-13099.84.99Benzyl chloride
5.00 70-13084.34.21Bromodichloromethane
5.00 70-13089.54.48Bromoform
5.00 70-13074.13.71Bromomethane
5.00 70-13071.83.591,3-Butadiene
5.00 70-13092.14.612-Butanone (MEK)
5.00 70-13083.04.15Carbon Disulfide
5.00 70-13089.34.46Carbon Tetrachloride
5.00 70-13083.74.18Chlorobenzene
5.00 70-13073.73.68Chloroethane
5.00 70-13088.44.42Chloroform
5.00 70-13072.93.64Chloromethane
5.00 70-13080.14.00Cyclohexane
5.00 70-13087.14.35Dibromochloromethane
5.00 70-13086.84.341,2-Dibromoethane (EDB)
5.00 70-13086.34.311,2-Dichlorobenzene
5.00 70-13087.44.371,3-Dichlorobenzene
5.00 70-13086.04.301,4-Dichlorobenzene
5.00 70-13090.74.53Dichlorodifluoromethane (Freon 12)
5.00 70-13086.34.321,1-Dichloroethane
5.00 70-13090.54.521,2-Dichloroethane
5.00 70-13088.54.431,1-Dichloroethylene
5.00 70-13088.14.41cis-1,2-Dichloroethylene
5.00 70-13087.14.36trans-1,2-Dichloroethylene
5.00 70-13082.24.111,2-Dichloropropane
Page 17 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ug/m3 Spike Level
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Flag/Qual Analyte
Air Toxics by EPA Compendium Methods - Quality Control
QUALITY CONTROL
RL
ppbv
Results RL Results ppbv
Batch B295141 - TO-15 Prep
LCS (B295141-BS1)Prepared & Analyzed: 11/17/21
5.00 70-13089.54.47cis-1,3-Dichloropropene
5.00 70-13095.24.76trans-1,3-Dichloropropene
5.00 70-13073.43.671,2-Dichloro-1,1,2,2-tetrafluoroethane
(Freon 114)
5.00 70-13091.34.561,4-Dioxane
5.00 V-3570-1301025.08Ethanol
5.00 L-0370-13064.43.22Ethyl Acetate *
5.00 70-13092.14.61Ethylbenzene
5.00 70-13097.14.854-Ethyltoluene
5.00 70-13081.44.07Heptane
5.00 70-13086.64.33Hexachlorobutadiene
5.00 70-13096.64.83Hexane
5.00 70-13089.84.492-Hexanone (MBK)
5.00 70-13070.73.53Isopropanol
5.00 70-13093.74.68Methyl tert-Butyl Ether (MTBE)
5.00 70-13082.34.12Methylene Chloride
5.00 70-13087.94.404-Methyl-2-pentanone (MIBK)
5.00 70-1301045.18Naphthalene
5.00 70-13081.54.08Propene
5.00 70-13095.94.79Styrene
5.00 70-13080.74.041,1,2,2-Tetrachloroethane
5.00 70-13087.44.37Tetrachloroethylene
5.00 70-13090.54.52Tetrahydrofuran
5.00 70-13090.84.54Toluene
5.00 70-13095.04.751,2,4-Trichlorobenzene
5.00 70-13085.14.251,1,1-Trichloroethane
5.00 70-13085.64.281,1,2-Trichloroethane
5.00 70-13080.14.00Trichloroethylene
5.00 70-13073.43.67Trichlorofluoromethane (Freon 11)
5.00 70-13088.84.441,1,2-Trichloro-1,2,2-trifluoroethane (Freon
113)
5.00 70-13094.14.711,2,4-Trimethylbenzene
5.00 70-13095.94.801,3,5-Trimethylbenzene
5.00 L-01, V-3670-1301407.00Vinyl Acetate *
5.00 70-13072.03.60Vinyl Chloride
10.0 70-13094.79.47m&p-Xylene
5.00 70-13094.04.70o-Xylene
8.00 70-130Surrogate: 4-Bromofluorobenzene (1)97.97.83
Page 18 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
Note: Blank Subtraction is not performed unless otherwise noted
*QC result is outside of established limits.
Wide recovery limits established for difficult compound.
Wide RPD limits established for difficult compound.
#Data exceeded client recommended or regulatory level
RL Reporting Limit
MDL Method Detection Limit
RPD Relative Percent Difference
LCS Laboratory Control Sample
Laboratory Control SampleLCS Dup Duplicate Laboratory Control Sample
MS Matrix Spike Sample
MS Dup Duplicate Matrix Spike Sample
REC Recovery
QC Quality Control
ppbv Parts per billion volume
EPA United States Environmental Protection Agency
Percent Recovery% REC
ND Not Detected
Percent recoveries and relative percent differences (RPDs) are determined by the software using values in the
calculation which have not been rounded.
Not ApplicableN/A
DL Detection Limit
Not CalculatedNC
LFB/LCS Lab Fortified Blank/Lab Control Sample
ORP Oxidation-Reduction Potential
Not dry weight correctedwet
Percent weight% wt
KilogramKg
Gramg
Milligrammg
Microgramg
Nanogramng
LiterL
MillilitermL
Microliter L
Cubic Meterm3
Extractable Petroleum HydrocarbonsEPH
Volatile Petroleum HydrocarbonsVPH
Air Petroleum HydrocarbonsAPH
Flame Ionization DetectorFID
Photo Ionization DetectorPID
FLAG/QUALIFIER SUMMARY
Detected but below the Reporting Limit (lowest calibration standard); therefore, result is an estimated
concentration (CLP J-Flag).
J
Laboratory fortified blank/laboratory control sample recovery outside of control limits. Data validation is not
affected since all results are "not detected" for all samples in this batch for this compound and bias is on the high
side.
L-01
Laboratory fortified blank/laboratory control sample recovery is outside of control limits. Reported value for this
compound is likely to be biased on the low side.
L-03
Laboratory fortified blank/laboratory control sample recovery is outside of control limits. Reported value for this
compound is likely to be biased on the high side.
L-05
Elevated reporting limit due to high concentration of target compounds.RL-11
Initial calibration verification (ICV) did not meet method specifications and was biased on the low side for this
compound. Reported result is estimated.
V-34
Initial calibration verification (ICV) did not meet method specifications and was biased on the high side for this
compound. Reported result is estimated.
V-35
Initial calibration verification (ICV) did not meet method specifications and was biased on the high side. Data
validation is not affected since sample result was "not detected" for this compound.
V-36
Page 19 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYST
Rebecca FaustRLF
Kerry K. McGeeKKM
Brittany R. FiskBRF
Page 20 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
INTERNAL STANDARD AREA AND RT SUMMARY
EPA TO-15
RTResponseInternal Standard Area %RT DiffResponse
Reference
RT
Reference Area %
Limits
RT Diff
Limit Q
2021-IA-01 (21K1098-01 )Lab File ID: K21A321014.D Analyzed: 11/17/21 18:32
Bromochloromethane (1)57078 2.969 60 - 140 2.9690 +/-0.50
1,4-Difluorobenzene (1)177807 3.566 60 - 140 3.5660 +/-0.50
Chlorobenzene-d5 (1)171610 5.156 60 - 140 5.1560 +/-0.50
2021-IA-02 (21K1098-02 )Lab File ID: K21A321015.D Analyzed: 11/17/21 19:09
Bromochloromethane (1)58975 2.97 60 - 140 2.9700 +/-0.50
1,4-Difluorobenzene (1)182307 3.571 60 - 140 3.5710 +/-0.50
Chlorobenzene-d5 (1)176888 5.156 60 - 140 5.1560 +/-0.50
2021-IA-01 (21K1098-01RE1 )Lab File ID: K21A321029.D Analyzed: 11/18/21 06:51
Bromochloromethane (1)50291 2.969 60 - 140 2.9690 +/-0.50
1,4-Difluorobenzene (1)170467 3.571 60 - 140 3.5710 +/-0.50
Chlorobenzene-d5 (1)162318 5.156 60 - 140 5.1560 +/-0.50
2021-IA-02 (21K1098-02RE1 )Lab File ID: K21A321030.D Analyzed: 11/18/21 07:21
Bromochloromethane (1)47395 2.965 60 - 140 2.9650 +/-0.50
1,4-Difluorobenzene (1)158396 3.571 60 - 140 3.5710 +/-0.50
Chlorobenzene-d5 (1)149649 5.156 60 - 140 5.1560 +/-0.50
INTERNAL STANDARD AREA AND RT SUMMARY
EPA TO-15
RTResponseInternal Standard Area %RT DiffResponse
Reference
RT
Reference Area %
Limits
RT Diff
Limit Q
2021-SV-11B (21K1098-03 )Lab File ID: G21A321032.D Analyzed: 11/18/21 05:45
Bromochloromethane (1)1795426 8.503 60 - 140 8.5030 +/-0.50
1,4-Difluorobenzene (1)4732170 10.277 60 - 140 10.2770 +/-0.50
Chlorobenzene-d5 (1)4443046 14.642 60 - 140 14.6420 +/-0.50
Page 21 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
CONTINUING CALIBRATION CHECK
COMPOUND TYPE CCV MIN (#)CCV LIMIT (#)CCV ICAL
% DIFF / DRIFTRESPONSE FACTOR
STD
* Values outside of QC limits
# Column to be used to flag Response Factor and %Diff/Drift values with an asterisk
Page 22 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
CertificationsAnalyte
CERTIFICATIONS
Certified Analyses included in this Report
EPA TO-15 in Air
AIHA,NY,ME,NHAcetone
AIHA,FL,NJ,NY,ME,NH,VABenzene
AIHA,FL,NJ,NY,ME,NH,VABenzyl chloride
AIHA,NJ,NY,ME,NH,VABromodichloromethane
AIHA,NJ,NY,ME,NH,VABromoform
AIHA,FL,NJ,NY,ME,NHBromomethane
AIHA,NJ,NY,ME,NH,VA1,3-Butadiene
AIHA,FL,NJ,NY,ME,NH,VA2-Butanone (MEK)
AIHA,NJ,NY,ME,NH,VACarbon Disulfide
AIHA,FL,NJ,NY,ME,NH,VACarbon Tetrachloride
AIHA,FL,NJ,NY,ME,NH,VAChlorobenzene
AIHA,FL,NJ,NY,ME,NH,VAChloroethane
AIHA,FL,NJ,NY,ME,NH,VAChloroform
AIHA,FL,NJ,NY,ME,NH,VAChloromethane
AIHA,NJ,NY,ME,NH,VACyclohexane
AIHA,NY,ME,NHDibromochloromethane
AIHA,NJ,NY,ME,NH1,2-Dibromoethane (EDB)
AIHA,FL,NJ,NY,ME,NH,VA1,2-Dichlorobenzene
AIHA,NJ,NY,ME,NH1,3-Dichlorobenzene
AIHA,FL,NJ,NY,ME,NH,VA1,4-Dichlorobenzene
AIHA,NY,ME,NHDichlorodifluoromethane (Freon 12)
AIHA,FL,NJ,NY,ME,NH,VA1,1-Dichloroethane
AIHA,FL,NJ,NY,ME,NH,VA1,2-Dichloroethane
AIHA,FL,NJ,NY,ME,NH,VA1,1-Dichloroethylene
AIHA,FL,NY,ME,NH,VAcis-1,2-Dichloroethylene
AIHA,NJ,NY,ME,NH,VAtrans-1,2-Dichloroethylene
AIHA,FL,NJ,NY,ME,NH,VA1,2-Dichloropropane
AIHA,FL,NJ,NY,ME,NH,VAcis-1,3-Dichloropropene
AIHA,NY,ME,NHtrans-1,3-Dichloropropene
AIHA,NJ,NY,ME,NH,VA1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
AIHA,NJ,NY,ME,NH,VA1,4-Dioxane
AIHAEthanol
AIHAEthyl Acetate
AIHA,FL,NJ,NY,ME,NH,VAEthylbenzene
AIHA,NJ4-Ethyltoluene
AIHA,NJ,NY,ME,NH,VAHeptane
AIHA,NJ,NY,ME,NH,VAHexachlorobutadiene
AIHA,FL,NJ,NY,ME,NH,VAHexane
AIHA2-Hexanone (MBK)
AIHA,NY,ME,NHIsopropanol
AIHA,FL,NJ,NY,ME,NH,VAMethyl tert-Butyl Ether (MTBE)
AIHA,FL,NJ,NY,ME,NH,VAMethylene Chloride
AIHA,FL,NJ,NY,ME,NH4-Methyl-2-pentanone (MIBK)
NY,ME,NHNaphthalene
AIHAPropene
AIHA,FL,NJ,NY,ME,NH,VAStyrene
AIHA,FL,NJ,NY,ME,NH,VA1,1,2,2-Tetrachloroethane
Page 23 of 27
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
CertificationsAnalyte
CERTIFICATIONS
Certified Analyses included in this Report
EPA TO-15 in Air
AIHA,FL,NJ,NY,ME,NH,VATetrachloroethylene
AIHATetrahydrofuran
AIHA,FL,NJ,NY,ME,NH,VAToluene
AIHA,NJ,NY,ME,NH,VA1,2,4-Trichlorobenzene
AIHA,FL,NJ,NY,ME,NH,VA1,1,1-Trichloroethane
AIHA,FL,NJ,NY,ME,NH,VA1,1,2-Trichloroethane
AIHA,FL,NJ,NY,ME,NH,VATrichloroethylene
AIHA,NY,ME,NHTrichlorofluoromethane (Freon 11)
AIHA,NJ,NY,ME,NH,VA1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
AIHA,NJ,NY,ME,NH1,2,4-Trimethylbenzene
AIHA,NJ,NY,ME,NH1,3,5-Trimethylbenzene
AIHA,FL,NJ,NY,ME,NH,VAVinyl Acetate
AIHA,FL,NJ,NY,ME,NH,VAVinyl Chloride
AIHA,FL,NJ,NY,ME,NH,VAm&p-Xylene
AIHA,FL,NJ,NY,ME,NH,VAo-Xylene
Con-Test, a Pace Environmental Laboratory, operates under the following certifications and accreditations:
Code Description Number Expires
100033AIHA-LAP, LLC - ISO17025:2017AIHA 03/1/2022
M-MA100Massachusetts DEPMA 06/30/2022
PH-0165Connecticut Department of Publilc HealthCT 12/31/2022
10899 NELAPNew York State Department of HealthNY 04/1/2022
2516 NELAPNew Hampshire Environmental LabNH-S 02/5/2022
LAO00112Rhode Island Department of HealthRI 12/30/2021
652North Carolina Div. of Water QualityNC 12/31/2021
MA007 NELAPNew Jersey DEPNJ 06/30/2022
E871027 NELAPFlorida Department of HealthFL 06/30/2022
LL720741Vermont Department of Health Lead LaboratoryVT 07/30/2022
MA00100State of MaineME 06/9/2023
460217Commonwealth of VirginiaVA 12/14/2021
2557 NELAPNew Hampshire Environmental LabNH-P 09/6/2022
VT-255716Vermont Department of Health Drinking WaterVT-DW 06/12/2022
25703North Carolina Department of HealthNC-DW 07/31/2022
68-05812Commonwealth of Pennsylvania DEPPA 06/30/2022
9100Dept. of Env, Great Lakes, and EnergyMI 09/6/2022
Page 24 of 27
Page 25 of 27
Page 26 of 27
Page 27 of 27

APPENDIX C
NCDEQ RISK CALCULATOR SUMMARY

Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
Prepared By:Terracon Consultants, Inc
2021-IA-02
North Carolina Department of Environmental Quality
Risk Calculator
Caraustar and Savona Mill
Brownfields
23061-19-060
June 2021
May 2021 EPA RSL Table
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID: 23061-19-060
Exposure Unit ID: 2021-IA-02
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(ug/m3)
Notes:CAS Number Chemical
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection
Limits
Concentration
Used for
Screening
Background
Value
Screening
Toxicity Value
(Screening
Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC Flag
(Y/N)
Rationale for
Selection or
Deletion
190 67-64-1 Acetone ug/m3
1.9 71-43-2 Benzene ug/m3
0.44 56-23-5 Carbon Tetrachloride ug/m3
0.32 67-66-3 Chloroform ug/m3
1 74-87-3 Chloromethane ug/m3
1 110-82-7 Cyclohexane ug/m3
0.57 106-46-7 Dichlorobenzene, 1,4-ug/m3
2.4 75-71-8 Dichlorodifluoromethane ug/m3
2.1 141-78-6 Ethyl Acetate ug/m3
1.3 100-41-4 Ethylbenzene ug/m3
36 142-82-5 Heptane, N-ug/m3
11 110-54-3 Hexane, N-ug/m3
5.9 67-63-0 Isopropanol ug/m3
4.3 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3
0.71 75-09-2 Methylene Chloride ug/m3
0.55 91-20-3 ~Naphthalene ug/m3
0.77 100-42-5 Styrene ug/m3
1.6 127-18-4 Tetrachloroethylene ug/m3
7 108-88-3 Toluene ug/m3
0.49 76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-ug/m3
0.079 79-01-6 Trichloroethylene ug/m3
1.3 75-69-4 Trichlorofluoromethane ug/m3
2.5 95-63-6 Trimethylbenzene, 1,2,4-ug/m3
0.77 108-67-8 Trimethylbenzene, 1,3,5-ug/m3
4.1 106-42-3 Xylene, P-ug/m3
4.4 108-38-3 Xylene, m-ug/m3
1.8 95-47-6 Xylene, o-ug/m3
Input Form 2E
Indoor Air Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion.
If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID: 23061-19-060
Exposure Unit ID: 2021-IA-02
Receptor Pathway
Carcinogenic
Risk Hazard Index Risk exceeded?
Soil NC NC NC
Groundwater Use*NC NC NC
Soil NC NC NC
Groundwater Use*NC NC NC
Construction Worker Soil NC NC NC
Soil NC NC NC
Surface Water*NC NC NC
Receptor Pathway
Carcinogenic
Risk Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air 4.4E-06 1.6E-01 NO
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
3. NM = Not Modeled
4. NC = Pathway not calculated
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based
closure.
Surface Water Exceedence of 2B at Receptor?
Exceedence of 2B at Receptor?
VAPOR INTRUSION CALCULATORS
Resident
Non-Residential Worker
CONTAMINANT MIGRATION CALCULATORS
Target Receptor Concentrations Exceeded?
Groundwater Exceedence of 2L at Receptor?
Exceedence of 2L at Receptor?
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
Notes:
DIRECT CONTACT SOIL AND WATER CALCULATORS
Resident
Non-Residential Worker
Recreator/Trespasser
North Carolina DEQ Risk Calculator
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
Prepared By:Terracon Consultants, Inc
2021-SV-11B
North Carolina Department of Environmental Quality
Risk Calculator
Caraustar and Savona Mill
Brownfields
23061-19-060
June 2021
May 2021 EPA RSL Table
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID: 23061-19-060
Exposure Unit ID: 2021-SV-11B
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(ug/m3)
Notes:CAS Number Chemical
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection
Limits
Concentration
Used for
Screening
Background
Value
Screening
Toxicity Value
(Screening
Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC Flag
(Y/N)
Rationale for
Selection or
Deletion
280 67-64-1 Acetone ug/m3
2.3 67-66-3 Chloroform ug/m3
2.8 75-71-8 Dichlorodifluoromethane ug/m3
2 100-41-4 Ethylbenzene ug/m3
1.7 142-82-5 Heptane, N-ug/m3
150 67-63-0 Isopropanol ug/m3
28 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3
6.7 91-20-3 ~Naphthalene ug/m3
160 127-18-4 Tetrachloroethylene ug/m3
5.8 108-88-3 Toluene ug/m3
2800 95-63-6 Trimethylbenzene, 1,2,4-ug/m3
2000 108-67-8 Trimethylbenzene, 1,3,5-ug/m3
11 106-42-3 Xylene, P-ug/m3
11 108-38-3 Xylene, m-ug/m3
Input Form 2D
Soil Gas Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID: 23061-19-060
Exposure Unit ID: 2021-SV-11B
Receptor Pathway
Carcinogenic
Risk Hazard Index Risk exceeded?
Soil NC NC NC
Groundwater Use*NC NC NC
Soil NC NC NC
Groundwater Use*NC NC NC
Construction Worker Soil NC NC NC
Soil NC NC NC
Surface Water*NC NC NC
Receptor Pathway
Carcinogenic
Risk Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 2.7E-07 2.0E-01 NO
Indoor Air NC NC NC
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
3. NM = Not Modeled
4. NC = Pathway not calculated
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based
closure.
Surface Water Exceedence of 2B at Receptor?
Exceedence of 2B at Receptor?
VAPOR INTRUSION CALCULATORS
Resident
Non-Residential Worker
CONTAMINANT MIGRATION CALCULATORS
Target Receptor Concentrations Exceeded?
Groundwater Exceedence of 2L at Receptor?
Exceedence of 2L at Receptor?
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
Notes:
DIRECT CONTACT SOIL AND WATER CALCULATORS
Resident
Non-Residential Worker
Recreator/Trespasser
North Carolina DEQ Risk Calculator
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
2021-IA-01
North Carolina Department of Environmental Quality
Risk Calculator
Caraustar and Savona Mill
Brownfields
23061-19-060
June 2021
May 2021 EPA RSL Table
Prepared By:Terracon Consultants, Inc
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID: 23061-19-060
Exposure Unit ID: 2021-IA-01
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(ug/m3)
Notes:CAS Number Chemical
Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units
Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection
Limits
Concentration
Used for
Screening
Background
Value
Screening
Toxicity Value
(Screening
Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC Flag
(Y/N)
Rationale for
Selection or
Deletion
98 67-64-1 Acetone ug/m3
1.8 71-43-2 Benzene ug/m3
0.43 56-23-5 Carbon Tetrachloride ug/m3
0.25 67-66-3 Chloroform ug/m3
0.97 74-87-3 Chloromethane ug/m3
1 110-82-7 Cyclohexane ug/m3
0.32 106-46-7 Dichlorobenzene, 1,4-ug/m3
2.4 75-71-8 Dichlorodifluoromethane ug/m3
1.3 141-78-6 Ethyl Acetate ug/m3
1.5 100-41-4 Ethylbenzene ug/m3
0.52 109-99-9 ~Tetrahydrofuran ug/m3
3.5 142-82-5 Heptane, N-ug/m3
12 110-54-3 Hexane, N-ug/m3
2.5 67-63-0 Isopropanol ug/m3
2.9 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3
1.5 75-09-2 Methylene Chloride ug/m3
0.61 91-20-3 ~Naphthalene ug/m3
0.54 100-42-5 Styrene ug/m3
1.2 127-18-4 Tetrachloroethylene ug/m3
7.9 108-88-3 Toluene ug/m3
0.61 76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-ug/m3
0.18 71-55-6 Trichloroethane, 1,1,1-ug/m3
1.3 75-69-4 Trichlorofluoromethane ug/m3
1.9 95-63-6 Trimethylbenzene, 1,2,4-ug/m3
0.46 108-67-8 Trimethylbenzene, 1,3,5-ug/m3
3.5 106-42-3 Xylene, P-ug/m3
3.5 108-38-3 Xylene, m-ug/m3
2 95-47-6 Xylene, o-ug/m3
Input Form 2E
Indoor Air Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are likely not associated with vapor intrusion.
If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID: 23061-19-060
Exposure Unit ID: 2021-IA-01
Receptor Pathway
Carcinogenic
Risk Hazard Index Risk exceeded?
Soil NC NC NC
Groundwater Use*NC NC NC
Soil NC NC NC
Groundwater Use*NC NC NC
Construction Worker Soil NC NC NC
Soil NC NC NC
Surface Water*NC NC NC
Receptor Pathway
Carcinogenic
Risk Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air 4.1E-06 1.2E-01 NO
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
3. NM = Not Modeled
4. NC = Pathway not calculated
DIRECT CONTACT SOIL AND WATER CALCULATORS
Resident
Non-Residential Worker
Recreator/Trespasser
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based
closure.
Surface Water Exceedence of 2B at Receptor?
Exceedence of 2B at Receptor?
VAPOR INTRUSION CALCULATORS
Resident
Non-Residential Worker
CONTAMINANT MIGRATION CALCULATORS
Target Receptor Concentrations Exceeded?
Groundwater Exceedence of 2L at Receptor?
Exceedence of 2L at Receptor?
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
Notes:
North Carolina DEQ Risk Calculator