26037_Scarletts 66_BAR Work Plan Rev 1-signed

BROWNFIELDS ASSESSMENT WORK PLAN
REVISION 1.0
SCARLETT’S 66

1030 SEIGLE AVENUE
CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA

ECS PROJECT NO. 49:17541
BROWNFIELDS PROJECT ID: 26037-22-060

PREPARED FOR
1030 SEIGLE, LLC

SUBMITTED: APRIL 13, 2023
REVISED: APRIL 24, 2023

1

April 13, 2023
Revised: April 24, 2023

North Carolina Department of Environmental Quality
Division of Waste Management, Brownfields Redevelopment Section
610 East Center Avenue
Suite 301
Mooresville, North Carolina 28115

Attn: Ms. Carolyn Minnich, Project Manager

Reference: Brownfields Assessment Work Plan, Revision 1.0
Scarlett’s 66
1030 Seigle Avenue
Charlotte, Mecklenburg County, North Carolina
North Carolina Brownfields ID No. 26037-22-060
ECS Project No. 49:17541 Dear Ms. Minnich,

ECS Southeast, LLP (ECS) has prepared this work plan to conduct Brownfields Assessment
Activities at the subject property on behalf of our client, 1030 Seigle, LLC. This plan has been
developed at the request of the North Carolina Department of Environmental Quality (NCDEQ)
Division of Waste Management (NCDWM) – Brownfields Redevelopment Section (BRS) during a
conference call conducted on March 6, 2023. The Work Plan was initially submitted to the BRS
on April 13, 2023. The BRS submitted comments to the initial Work Plan on April 19, 2023, and
this Work Plan incorporates those comments.

If you have any questions concerning this work plan or this project, please contact us.

Sincerely,

ECS SOUTHEAST, LLP

Scott Young, P.G. Joseph P. Nestor, P.G., P.E,
Senior Environmental Project Manager Environmental Principal Geologist
[e-mail] [e-mail]

North Carolina Corporate Geology License #C-553
cc: Mr. Anderson Pearson – 1030 Seigle, LLC
Mr. Robert Gelblum
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TABLE OF CONTENTS

1.0 INTRODUCTION .......................................................................................................................... 1
2.0 SCOPE OF WORK ......................................................................................................................... 2
2.1 Soil Boring and Sample Collection ....................................................................................... 2
2.2 Exterior Soil Gas Probe Installation and Sampling ............................................................... 2
2.3 Sub-Slab Soil Gas Probe Installation and Sampling .............................................................. 3
2.4 Groundwater Sample Collection .......................................................................................... 3
2.5 Deviation from Approved Plan............................................................................................. 3
2.6 Receptor Survey ................................................................................................................... 3
3.0 SAMPLING METHODOLOGY ....................................................................................................... 4
3.1 Soil Sampling ........................................................................................................................ 4
3.2 Exterior Soil Gas Sampling ................................................................................................... 4
3.3 Sub-Slab Soil Gas Sampling .................................................................................................. 5
3.4 Groundwater Sampling ........................................................................................................ 6
4.0 LABORATORY ANALYSIS .............................................................................................................. 7
4.1 Soil Sample Analyses ............................................................................................................ 7
4.2 Exterior and Sub-Slab Soil Gas Analyses .............................................................................. 7
4.3 Groundwater Sample Analysis ............................................................................................. 7
5.0 QUALITY ASSURANCE/QUALITY CONTROL ................................................................................. 7
6.0 INVESTIGATIVE DERIVED WASTE ................................................................................................ 8
7.0 REPORTING ................................................................................................................................. 8
FIGURES

Figure 1 USGS Topographic Map
Figure 2 Previous Sample Locations Map
Figure 3 Proposed Sample Locations Map

TABLE

Table 1 Proposed Samples & Analysis

APPENDICES

Appendix A Minimum Requirement for Site Assessment Work Plans and Reports
Appendix B Work Plan Approval Signature Page
Appendix C Historical Analytical Data
Appendix D NCDEQ Brownfields Property Receptor Survey/Checklist
Appendix E EPA Method TO-15 Analyte List
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1.0 INTRODUCTION

The subject property is located at 1030 Seigle Avenue, Charlotte, Mecklenburg County, North Carolina
(Figure 1) and identified by Mecklenburg County GIS as Parcel Identification Number 08112412 and is
owned by 1030 Seigle, LLC. The site is developed with a one-story, 1,736 square-foot building that was
reportedly constructed in 1957. Municipal water and sewer are provided to the subject property by
Charlotte Water. Attached to this submittal is a completed Minimum Requirement for Site Assessment Work
Plans and Reports (Appendix A) and a Work Plan Approval Signature Page (Appendix B) which have been
completed by ECS.

Based upon information provided in ECS Phase I Environmental Assessment Report (ECS Project No.
49:17421), dated June 7, 2022, the subject property was developed with three residences from 1911
through 1953. In 1957, the current structure was constructed on the subject property. From 1957
through at least 1994, the subject property operated as a gasoline fueling station. By 1999, the subject
property is documented as being operating as an automotive repair facility through present day.

1030 Seigle, LLC provided ECS with a Corrective Action Performance Report prepared by ATC Associates
of North Carolina, P.C. dated February 17, 2022. The report documents that groundwater has been
impacted by a release of petroleum including benzene as high as 7,210 micrograms per liter (µg/L) and
the presence of light non-aqueous phase petroleum liquid (LNAPL). The monitoring wells currently
located at the site are shown on Figure 2. The report further indicates that assessment and remediation
of the site is being undertaken through the State-Lead State Trust Fund (STF) Program. The report also
indicates the risk classification assigned by the North Carolina Department of Environmental Quality
(NCDEQ) is intermediate and the classification is triggered by at least two criteria: (1) the presence of
benzene at a concentration exceeding the NCDEQ Gross Contaminant Level (GCL) for benzene (5,000 µg/L)
and (2) the presence of groundwater contamination at concentration more than 10 times the surface
water quality standard for a stream (Little Sugar Creek) located less than 500 feet from source area. The
historical analytical data is provided in Appendix C.

On May 27, 2022, 1030 Seigle, LLC submitted a Brownfields Property Application to the NCDEQ
Brownfields Program. A Letter of Eligibility was received from the NCDEQ Brownfields Program on
October 10, 2022, with a Brownfields Project Manager (BPM) to be named later. Ms. Carolyn Minnich
was assigned as the temporary Project Manager on February 16, 2023, and a Brownfields Kick-off meeting
was subsequently scheduled for March 6, 2023.

Based upon the results of the Brownfields Kick-off meeting conference call/Teams meeting on March 6,
2023, with 1030 Seigle, LLC, Mr. Robert Gelbum (independent consultant), ECS, and Ms. Carolyn Minnich,
ECS has prepared this work plan to address the below data gaps identified by the Brownfields
Redevelopment Section:

• Soil sample collection in areas of shallow soil disturbance;
• Soil sample collection at the approximate location of above-ground storage containers located at
the site;
• Soil sample collection in the area between the retaining wall and property boundary
• Sub-slab soil gas sampling in the existing site structure;
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• Exterior soil gas sampling in the footprint of the proposed site structure;
• Groundwater sample collection; and,
• Conducting a Brownfields Receptor Survey.

This site is also managed by the NCDEQ State Lead Program of the UST Section as Incident No. 36384. The
data is to be collected solely for the North Carolina Brownfields Program.

2.0 SCOPE OF WORK

The scope of work described by media below generally includes nine soil borings, one exterior soil gas
samples, and two sub-slab soil gas samples. The sampling activities will be conducted in general
accordance with Science and Ecosystem Support Division (SESD) and North Carolina Department of
Environmental Quality (NCDEQ) Vapor Intrusion guidelines.

2.1 Soil Boring and Sample Collection

• ECS will observe the advancement of nine borings (SB-1, SB-2, SB-3, SB-4, and SB-A through SB-E) at
the site in order to assess site soils. The borings will be advanced via decontaminated hand auger to
depths of approximately two feet below ground surface (bgs), with the exception of soil boring SB-4
which will be advanced to five feet bgs. The proposed boring and sample locations are shown on
Figure 3.
• Soil borings SB-1 and SB-2 are located in the area of shallow soil disturbance for the grading of the
site for the proposed building pad, soil boring SB-3 is located in the area of shallow soil disturbance
for the construction of the proposed building elevator, soil boing SB-4 is located at the approximate
location of above-ground storage containers located at the site, and soil borings SB-A through SB-E
are located between the site retaining wall and property boundary.
• Additional details in regard to sampling are provided in Section 3.0 (Sampling Methodology).

2.2 Exterior Soil Gas Probe Installation and Sampling

• ECS anticipates that an exterior soil gas sample will be collected from one location, as shown on Figure
3. The actual location may be slightly adjusted based upon actual field conditions but generally the
location is proposed to be within the current proposed future building footprint. The soil gas sample will
be collected in a Summa canister as described in subsequent paragraphs.
• The temporary exterior soil gas sample point will be constructed by advancing a boring to a depth of
10 feet bgs using a decontaminated hand auger or Geoprobe drill rig using direct push technology.
• A vapor implant consisting of a porous air filter connected to a length of Nylaflow tubing will be
positioned in the boring at the sample point. The porous air filter will be positioned near the bottom
of the boring. The annular space around and approximately 6 inches above the porous air filter will
be backfilled with clean filter sand and bentonite will be placed in the remaining annular space.
Distilled water will be poured into the bentonite and allowed to hydrate for at least 30 minutes before
sampling is performed.
• The soil vapor sample will not be collected for at least 24 hours after installation, in order to allow the
soil vapors to stabilize prior to sample collection.
• Additional details in regard to sampling are provided in Section 3.0 (Sampling Methodology).
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2.3 Sub-Slab Soil Gas Probe Installation and Sampling

• ECS anticipates that two sub-slab soil gas samples will be collected from locations beneath the existing
building’s concrete slab via a permanent VaporPins® installed using a hammer drill to penetrate
through the concrete slab at the approximate locations shown on Figure 3. Once the concrete slab
has been penetrated, a new VaporPin® with a new silicon sleeve will be inserted in the concrete slab
in general conformance with manufacturer’s recommendations (Vapor Pin Enterprises, Inc.). The
VaporPin® setup will be allowed to equilibrate for at least 20 minutes prior to leak testing.
• A sample train consisting of non-reactive tubing and microvalves will be connected to each VaporPin®
and to a Summa canister. A shut-in test will be performed on the sample train at each sample point
to confirm that leaks are not present in the sampling train. A microvalve at the connection between
the sampling train and the VaporPin® will be closed, and a vacuum will be applied to the sampling
train using a disposable syringe. The vacuum gauge on the Summa canister will be monitored for
declining vacuum indicative of a leak. If a leak is indicated by a shut-in test, steps will be taken to
achieve better connections in the sample train.
• Additional details in regard to sampling are provided in Section 3.0 (Sampling Methodology).

2.4 Groundwater Sample Collection

• ECS will collect groundwater samples from existing monitoring wells MW-1, MW-2, and MW-4.
• ECS will measure water level in each well and collect groundwater samples. Water levels will be
measured in, and groundwater samples collected from, each of the monitoring wells. ECS will also
measure the water level in monitoring well MW-3 but will not collect a sample from this well. Water
level measurements will be collected using an electronic water level indicator accurate to 0.01 feet.

2.5 Deviation from Approved Plan

This work plan is intended to be dynamic and to be adapted to specific and actual site conditions.
Accordingly, should such conditions warrant a change either by addition, deletion or modification of a
procedure, such may be accomplished with agreement between the Prospective Developers’
representative and ECS after consultation with, and subject to approval by Brownfields Redevelopment
Section. Such changes will comply with applicable local, State, and Federal rules and regulations. A
written amendment shall be prepared and submitted to Brownfields Redevelopment Section for approval
(the use of e-mail correspondence shall suffice for approval) prior to implementation. The amendment
and approval will be included in the report for final documentation. Amendments must have the approval
of the NCDEQ Brownfields Program prior to implementation.

2.6 Receptor Survey

A Brownfields Property receptor survey will be completed, summarized in the report, and included as an
attachment within the report. The Brownfields Property receptor survey includes descriptions of the
property and building characteristics, surrounding property land use, nearby utilities, water supplies,
surface water, and wetlands. A blank copy of the NCDEQ Brownfields Property Receptor Survey/Checklist
is included in Appendix D.

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3.0 SAMPLING METHODOLOGY

The sampling activities will be conducted in general accordance with the SESD guidelines and NCDEQ
Vapor Intrusion guidelines.

3.1 Soil Sampling

• For soil borings SB-1, SB-2, SB-3, and SB-4, ECS will provide a project professional to collect soils
continuously from the ground surface to the termination depth of the soil borings. The soils will be
collected over the length of the boring and screened in the field by placing a portion into a resealable
plastic bag and measured for volatile organic vapors using a photoionization detector (PID) after
allowing them to set for approximately 15 minutes. A separate aliquot of soil from each sample point
will be placed in laboratory supplied containers with preservatives as appropriate for the requested
analysis. The soil will also be logged for lithologic descriptions and apparent evidence of a release
(staining, odors, etc.) will be noted.
• For soil borings SB-A through SB-E, a composite sample will be comprised of five individual grab soil
samples collected in re-sealable bags with one grab soil sample from each of these boring. An
individual soil sample and a duplicate will be collected from zero to two feet bgs at each sample point
to be composited. Additionally, an individual soil sample and a duplicate sample will be collected from
one to two feet bgs at each sample point to be used as the samples for the analysis of volatile organic
compounds (VOCs). The individual and duplicate samples will be placed immediately in plastic bags
after collection and sealed. The duplicate sample bags will be placed on ice to prevent volatilization
prior to screening of the individual bags. Each individual sample will be screened using a
photoionization detector (PID) or similar device for volatile organic vapors.
• The soil borings will be backfilled with the soil cuttings generated during the boring activities and
capped with asphalt, soil, or concrete, as appropriate. A summary of the proposed samples and
analyses is provided in Table 1. The soil boring locations will be recorded in the field with a handheld
Global Positioning System (GPS) unit.

3.2 Exterior Soil Gas Sampling

• ECS will obtain either one-liter or six-liter Summa canisters from a commercial laboratory that follows
NELAC standards and participates in the NELAP. Each canister will be pre-cleaned and pre-evacuated
so that it is under negative (i.e., under vacuum). The canisters will be batch certified by the laboratory.
Each Summa canister will be outfitted with a flow regulator set to 200 mL/min and a vacuum gauge.
• ECS will check and note the vacuum on each Summa Canister before initiating the sampling procedure.
If the initial vacuum prior to sample collection is less than 10 percent of the vacuum documented by
the laboratory at shipment, the Summa canister will not be used. ECS will open the valve on each
Summa canister to initiate sampling. ECS will terminate the sampling procedure at each sampling
point while a vacuum of at least 5 inches of mercury is still present in the canister. ECS will note the
vacuum for each canister at the end of the sampling procedure. If the final vacuum is less than 5
inches of mercury the data may be unusable. In addition, the vacuum will not be allowed to reach
zero inches of mercury.
• Prior to collecting the exterior soil gas sample, a sample train consisting of non-reactive tubing and
micro-valves will be connected to the Nylaflow tubing at each sample point and to a Summa canister.
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The sample train will be used to purge the sample line and direct flow to the Summa canister being
used to collect the sample. A shut-in test will be performed on the sample train at the sample point
to confirm that leaks are not present in the sampling train. A micro-valve at the connection between
the sampling train and the Nylaflow tubing will be closed, and a vacuum will be applied to the sampling
train using a disposable syringe. The vacuum gauge on the Summa canister will be monitored for
declining vacuum indicative of a leak.
• Prior to collecting the soil gas sample, a helium shroud leak test will be performed at each of the
sample points to confirm the integrity of the subsurface bentonite seal. The shroud will be placed
and sealed over the sampling point and entire sampling train including the Summa canister. The vapor
implant sample tubing and tracer gas tubing will be routed through small diameter holes in the wall
of the shroud. The shroud will be flooded with helium from a compressed gas tank through tracer gas
tubing routed through the shroud wall. The helium gas concentration inside the shroud will be
measured with a helium gas detector (Model MGD-2002 Multi-Gas Leak detector or similar device).
After the shroud has been flooded with helium gas concentration, three volumes of vapor will be
purged from the tubing, following which, a soil gas sample will be screened from a Tedlar bag for the
presence of helium. The flow rate during purging will be at a rate of 200 milliliters per minute (mL/min)
or less. If the soil gas sample contains less than 10 percent of the concentration inside the shroud,
the test will be considered acceptable. If the test results are not acceptable, ECS will take steps to
achieve a better bentonite seal.
• Following successful shut-in and helium shroud tests, ECS will collect an exterior soil gas sample from
the sample point. ECS will obtain a one- or six-liter Summa canister from a commercial laboratory
that follows National Environmental Laboratory Accreditation Conference (NELAC) standards and
participates in the National Environmental Laboratory Accreditation Program (NELAP). The canister
will be pre-cleaned and pre-evacuated so that it is under negative (i.e., under vacuum). ECS will check
the vacuum immediately prior to sampling. If the vacuum prior to sample collection is less than 10
percent of the vacuum documented by the laboratory at shipment, the Summa canister will not be
used. The canister will be batch certified by the laboratory. The Summa canister will be outfitted with
a flow regulator set to 200 milliliters per minute and a vacuum gauge. ECS will open the valve on the
Summa canister and soil gas will flow into the canister. ECS will note the time the valve is opened and
the initial vacuum. When the vacuum has decreased to approximately 5 inches of mercury, ECS will
shut the valve and record the time and final vacuum. If the final vacuum is less than 5 inches of
mercury the data may be unusable. In addition, the vacuum will not be allowed to reach zero inches
of mercury. ECS will request that the laboratory report the vacuum reading for each canister when it
is received by the laboratory.
• Following completion of soil gas sampling activities, the soil gas sampling point will be abandoned,
and the boring backfilled with the soil cuttings generated during the boring activities and capped with
asphalt, soil, or concrete, as appropriate. A summary of the proposed sample and analysis are
provided in Table 1. The soil gas sampling point will be recorded in the field with a handheld GPS unit.

3.3 Sub-Slab Soil Gas Sampling

• ECS will obtain either one-liter or six-liter Summa canisters from a commercial laboratory that follows
NELAC standards and participates in the NELAP. Each canister will be pre-cleaned and pre-evacuated
so that it is under negative (i.e., under vacuum). The canisters will be batch certified by the laboratory.
Each Summa canister will be outfitted with a flow regulator set to 200 mL/min and a vacuum gauge.
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• Prior to sample collection, the seal of each VaporPin® will be leak tested using helium gas, a shroud,
and a helium detector as recommended in NCDEQ Division of Waste Management (DWM) Vapor
Intrusion Guidance. The shroud will be placed and sealed over the sampling point and entire sampling
train including the VaporPin®. The vapor implant sample tubing and tracer gas tubing will be routed
through small diameter holes in the wall of the shroud. The shroud will be flooded with helium from
a compressed gas tank through tracer gas tubing routed through the shroud wall. The helium gas
concentration inside the shroud will be measured with a helium gas detector (Model MGD-2002
Multi-Gas Leak detector or similar device). After the shroud has been flooded with helium gas
concentration, three volumes of vapor will be purged from the tubing, following which, a soil gas
sample will be screened from a Tedlar bag for the presence of helium. The flow rate during purging
will be at a rate of 200 milliliters per minute (mL/min) or less. If the soil gas sample contains less than
10 percent of the concentration inside the shroud, the test will be considered acceptable. If the test
results are not acceptable, ECS will take steps to achieve a better bentonite seal.
• Following completion of successful leak testing, ECS will collect the sub-slab soil gas sample. ECS will
check and note the vacuum on each Summa Canister before initiating the sampling procedure. If the
initial vacuum prior to sample collection is less than 10 percent of the vacuum documented by the
laboratory at shipment, the Summa canister will not be used. ECS will open the valve on each Summa
cannister to initiate sampling. ECS will terminate the sampling procedure at each sampling point while
a vacuum of at least 5 inches of mercury is still present in the canister. ECS will note the vacuum for
each canister at the end of the sampling procedure. If the final vacuum is less 5 inches of mercury the
data may be unusable. In addition, the vacuum will not be allowed to reach zero inches of mercury.
• Following completion of sub-slab soil gas sampling activities, the sub-slab soil gas sampling points will
be abandoned, and the borings capped with concrete. A summary of the proposed samples and
analyses is provided in Table 1. An attempt to record the sub-slab soil gas sampling points with a
handheld GPS unit will be made. However, since the sample locations will be on the interior of a
building, this may not be possible. If the GPS unit cannot be used, detailed notes of the sample
locations will be made.

3.4 Groundwater Sampling

• Monitoring wells MW-1, MW-2, and MW-4 will be sampled using low-flow sampling techniques in
general conformance with USEPA Low Stress/Low Flow Purging and Sampling Procedure for the
Collection of Groundwater Samples from Monitoring Wells guidelines (Revised September 19, 2017)
and water quality measurements will be collected/recorded. ECS will attempt to maintain drawdown
in each well to less than 1 foot during sampling. Water quality measurements will be made using a
flow-through cell at intervals approximately 3 to 5 minutes apart. Parameters to be measured include
turbidity, temperature, specific conductance, pH, oxidation-reduction potential, and dissolved
oxygen. Groundwater samples will be collected when each well has stabilized. Stabilization will be
considered achieved when three consecutive readings are within the limits shown below:

• Turbidity (10% for values greater than 5 nephelometric turbidity units (NTUs); if three
turbidity values are less than 5 NTU, consider the values as stabilized).
• Dissolved Oxygen (10% for values greater than 0.5 mg/L, if three dissolved oxygen values are
less than 0.5 mg/L, consider the values as stabilized).
• Specific Conductance (3%).
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• Temperature (3%).
• pH (± 0.1 standard pH unit).
• Oxidation/Reduction Potential (±10 millivolts)
• A summary of the proposed samples and analyses is provided in Table 1. The monitoring wells will
be recorded in the field with a handheld GPS unit.

4.0 LABORATORY ANALYSIS

The soil samples will be submitted to a North Carolina certified laboratory for analysis. Since North
Carolina does not certify laboratories for analyses of vapor samples, ECS will request that the laboratory
analyze vapor samples for the most current and applicable standards from NELAP. The laboratory will be
instructed to use reporting limits below the IHSB Preliminary Soil Remediation Goals to the extent which
is technically feasible. Additionally, it will be requested that the method detection limits (MDL), and J-flags
be included. The laboratory will also be instructed to report the vacuum measurement for each Summa
canister at receipt by the laboratory. Level II QA/QC will be requested to be reported by the laboratory.

4.1 Soil Sample Analyses

The samples will be submitted for the laboratory analyses below:
• The samples collected from soil borings SB-1 through SB-4 will be shipped under Chain-of-Custody
(COC) protocol to a North Carolina certified laboratory for laboratory analysis of volatile organic
compounds (VOCs) by EPA Method 8260, semi-volatile organic compounds (SVOCs) by EPA Method
8270, the eight metals regulated under the Resource Conservation and Recovery Act (RCRA 8-metals)
by EPA Methods 6020 and 7471, and hexavalent chromium by EPA Method 7199.
• For soil borings SB-A through SB-E, the individual grab soil sample with the highest PID reading will be
appropriately packaged in laboratory-supplied containers from its duplicate re-sealable bag and
submitted to a North Carolina certified laboratory to be analyzed for VOCs using EPA Method 8260.
Subsequently, each of the grab soil samples from zero to two feet bgs will be gently mixed together
and one composite soil sample will be submitted for analysis by EPA Method 8270 for SVOCs, RCRA
8-metals using EPA Methods 6020 and 7471, and for hexavalent chromium by EPA Method 7199.

4.2 Exterior and Sub-Slab Soil Gas Analyses

The soil gas samples will be submitted for analysis of VOCs by EPA Method TO-15. ECS will use Pace
Analytical Services for the soil vapor analyses. A list of compounds analyzed by EPA Method TO-15 is included
in Appendix E.

4.3 Groundwater Sample Analysis

The groundwater samples will be submitted for analysis of VOCs by EPA Method 8260, SVOCs by EPA
Method 8270, and total RCRA metals by EPA Method 6020 and 7470.

5.0 QUALITY ASSURANCE/QUALITY CONTROL

In addition to the record samples described in the previous sections, ECS will collect one soil gas duplicate
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sample and one sub-slab soil gas duplicate sample, and these samples will be submitted for VOCs analysis
by EPA Method TO-15. The duplicates will be collected in conjunction with the respective record sample
via a “tee” connection in the tubing. Also, one duplicate soil sample and one duplicate groundwater
sample will be collected and submitted for the sample analyses as the record samples. Duplicate samples
will be submitted to the laboratory without identification as to their respective record samples.

The samples will be maintained under a chain-of-custody protocol and a Level II QA/QC package will be
requested from the laboratory. The soil and groundwater samples will be submitted to a North Carolina
certified laboratory for analysis. Since North Carolina does not certify soil gas samples, the soil gas samples
will be submitted to a laboratory that follows NELAC standards. Additionally, the laboratories will be
requested to report method detection limits or MDLs to the applicable screening criteria (to the extent
feasible) and include estimated concentrations (i.e.,“J-flags”) between the Reporting Limits (RLs) and the
MDLs.

ECS will request that the laboratory provide containers that will contain a sufficient volume for analysis of
Matrix Spike and Spike Duplicate (MS/MSD) samples.

Soil and groundwater samples will be placed in a cooler with ice immediately after collection. Soil samples
will be submitted to the laboratory within 48 hours of collection and/or written documentation of
temperature maintenance will be provided if the situation requires extension beyond 48 hours prior to
submittal to laboratory. Since the soil gas samples are not temperature dependent, these samples will be
submitted to the laboratory as soon as reasonably possible.

6.0 INVESTIGATIVE DERIVED WASTE

Investigative derived waste (IDW) generated from the soil and groundwater sampling activities (i.e., soil
cuttings, purge water, etc.) will be thinly spread onsite in the vicinity of the sample location to the extent
possible, unless impacted soil is apparent based on field observations (i.e., visual and/or olfactory senses
or elevated PID/FID readings). If soil cuttings appear to be impacted or sufficient space to thinly spread
the cuttings is not available, the soil cuttings will be containerized. If soil cuttings are containerized,
additional waste characterization will be conducted based on the requirements of the disposal facility.

7.0 REPORTING

ECS will prepare a written report including a title page including the information requested in the
Brownfields checklist and documenting the field activities, sampling procedures, sample locations,
laboratory procedures and analytical results discussion, and conclusions for submission to the Brownfields
Redevelopment Section. The report will include a sample location figure, inferred groundwater flow
figure, boring logs, and data tables. The soil samples results will be compared to the current NCDEQ
Protection of Groundwater and Industrial/Commercial Preliminary Soil Remediation Goals (PSRGs). The
exterior soil gas sample results and sub-slab soil gas sample results will be compared to the current
NCDEQ, IHSB, Residential and Non-Residential Vapor Intrusion Screening Levels (VISLs) for Sub-slab and
Exterior Soil Gas. If positive detections are noted, the exterior soil gas and sub-slab soil gas sample results
will also be input into the NCDEQ Risk Calculator to assess if the results exceed applicable risk thresholds.
Sample collection logs for soil gas samples will be included in the report. The sample collection logs for
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soil gas samples will include helium leak checks results, and photographs of the sample arrays. The report
will be signed and sealed by a North Carolina Professional Engineer or Licensed Geologist. The report will
also include the identification numbers for ECS’s corporate Professional Engineers and Geologists
Licenses.

The Brownfields Property receptor survey will be completed and summarized in the report. The NCDEQ
Brownfields Property Receptor Survey/Checklist will be included as an attachment to the report.

DRAFT

FIGURES

FIGURE 1USGS TOPOGRAPHIC MAP
SCARLETT’S 661030 SEIGLE AVENUECHARLOTTE, NORTH CAROLINA
ECS PROJECT NO. 49:17541
SOURCE:
USGS 7.5’ TOPOGRAPHIC MAP
CHARLOTTE WEST, NC 2019
SCALE:
AS SHOWN
SITE
FIGURE 2PREVIOUS SAMPLE LOCATIONS MAP
SCARLETT’S 661030 SEIGLE AVENUECHARLOTTE, NORTH CAROLINA
ECS PROJECT NO. 49:17541
SOURCE:
MECKLENBURG COUNTY GIS WEBSITE
ACCESSED FEBRUARY 23, 2023
SCALE:
AS SHOWN
APPROXIMATE BROWNFIELDS SITE BOUNDARY
LEGEND
APPROXIMATE EXISTING MONITORING WELL LOCATION
MW-2MW-3
MW-1
MW-4
AS-1
MW-5
FIGURE 3PROPOSED SAMPLE LOCATIONS MAP
SCARLETT’S 661030 SEIGLE AVENUECHARLOTTE, NORTH CAROLINA
ECS PROJECT NO. 49:17541
SOURCE:
MECKLENBURG COUNTY GIS WEBSITE
ACCESSED FEBRUARY 23, 2023
SCALE:
AS SHOWN
APPROXIMATE BROWNFIELDS SITE BOUNDARY
LEGEND
APPROXIMATE SOIL SAMPLE LOCATION
APPROXIMATE MONITORING WELL LOCATION
APPROXIMATE SUB-SLAB SOIL GAS SAMPLE LOCATION
APPROXIMATE EXTERIOR SOIL GAS LOCATION
SS-2
SG-1
SB-1
SB-2
SB-3
SB-A
SB-B
SB-C
SB-D
SB-E
SB-4
APPROXIMATE PROPOSED BUILDING FOOTPRINT
MW-2
MW-1
MW-4
SS-1

DRAFT

TABLES

Table 1
Proposed Samples & Analysis
Scarlett's 66
1030 Seigle Avenue
Charlotte, Mecklenburg County, North Carolina
Brownfields Project No.: 26037-22-060
ECS Project No.: 49:17541
Sub-Slab Soil Gas Samples
SS-1 Batch
SS-2 Batch
SS-DUP*Batch
Exterior Soil Gas Samples
SG-1 VOCs / TO-15 Batch
SG-DUP*Batch
Discrete Soil Samples
SB-1 (Total Boring Depth 0-2 ft bgs)NA
SB-2 (Total Boring Depth 0-2 ft bgs)NA
SB-3 (Total Boring Depth 0-2 ft bgs)NA
SB-4 (Total Boring Depth 0-5 ft bgs)NA
SB-DUP*NA
SB-A (Total Boring Depth 0-2 ft bgs)NA
SB-B (Total Boring Depth 0-2 ft bgs)NA
SB-C (Total Boring Depth 0-2 ft bgs)NA
SB-D (Total Boring Depth 0-2 ft bgs)NA
SB-E (Total Boring Depth 0-2 ft bgs)NA
Groundwater Samples
MW-1 NA
MW-2 NA
MW-4 NA
MW-DUP*NA
Chromium VI = Hexavalent Chromium
DUP = Duplicate Sample
* = The number of duplicate samples included on this table are estimates. One duplicate will be collected per day of sampling per media.
VOCs / EPA Method 8260
SVOCs / EPA Method 8270
Total RCRA Metals / EPA Method 6020/7470
Grab
VOCs / EPA Method 8260
Composite
SVOCs / EPA Method 8270
Total RCRA Metals / EPA Method 6020/7471
Chromium VI / EPA Method 7199
Sample Location Laboratory Analysis / Analytical Method Batch / Individual Certified Summa
Canister
VOCs / EPA Method 8260
SVOCs / EPA Method 8270
Total RCRA Metals / EPA Method 6020/7471
Chromium VI / EPA Method 7199
VOCs / TO-15

DRAFT

APPENDIX A
Minimum Requirement for Site Assessment Work Plans and Reports

Work Plan and Report Checklist
Version 3 March 2023

Minimum Requirements Checklist Site Assessment Work Plans and Reports NCDEQ Brownfields Redevelopment Section– March 2023 Instructional Page
All references to Prospective Developers include follow-on owners who may be conducting work in accordance with the Brownfields Property Management Branch.
To increase predictability and most efficiently assess Brownfields Properties and the redevelopment timing requirements of Prospective Developers or follow-on owners, the Brownfields Redevelopment Section has standardized the format for Site Assessments. This format has been
generated in the form of a checklist to allow for ease in submission by the prospective developer’s
consultant and for the Brownfields Redevelopment Section’s completeness review. This checklist outlines the minimum requirements and submittal format under the Brownfields Redevelopment Section for Assessment Requirements and Reporting. All Assessment Work Plans and Report submissions to the Brownfields Redevelopment Section must include this completed checklist in the
outlined format.
These requirements allow DEQ to reduce review time for the Assessment Work Plan and Report and increase process predictability for prospective developers. This checklist will also provide reliable data for risk-based decisions and further expedite the project timeline. Any divergence from these requirements will lengthen the process of assessing risks on the site, may necessitate
reprioritization of a project manager’s queue towards projects that meet these requirements. Therefore, delaying production of the brownfields agreement and/or environmental management plan. Any alterations to the checklist on a site-specific basis must be reviewed and approved by the Section prior to implementation. However, in order to respect the schedule of all projects in house and keep the Section’s entire project pipeline moving, we strongly recommend against seeking
changes to the checklist.
Based on a review of environmental and risk data from our project inventory, please note there are some new points of emphasis that are included herein:
1. For ALL residential reuses; sub-slab vapor assessment (full list EPA TO-15) is required, regardless if existing structures will be removed. If no structures or slabs exist on the Brownfields Property, exterior soil gas assessment is required within all proposed structure
footprints.
2. ALL properties require groundwater data (VOCs, SVOCs and RCRA Metals) from a
minimum of three sample locations, depth to groundwater and a resulting potentiometric map. 3. Soil shall be assessed based on areas of concern and redevelopment plans and across the depth interval of the cut/grading.

Work Plan and Report Checklist
Version 3 March 2023

Environmental Site Assessment Work Plan Checklist Reviewed and checked by (Name): _______________________________________ Title Page
The title page should include the following information. Letter style reports are acceptable, as long as this
information is somewhere on the first page.
☒ Title of Work Plan
☒ Brownfields Project Name (not the development name)
☒ Brownfields Project Number
☒ Date (updated with each revision)
☐ Revision Number
☒ Firm PE/PG License Number
☒ Individual PE/PG seal & signature
Section 1 – Introduction
☒ Provide the site location, address, and acreage.
☒ Provide a BRIEF summary of the history of the property and its history in the Section. For example:
reiterate RECs from a Phase I ESA, indicate if the scope of work was negotiated during a Data Gap Meeting, etc.
☒ Briefly list and describe the data gaps the assessment is attempting to fill
☒ Indicate if the assessment data is for the use of any other DEQ programs in addition to the Brownfields
Redevelopment Section (i.e. the site is a regulated UST, IHSB, etc. property)
Section 2 – Scope of Work
☒ Provide a general description of proposed scope of work covered in this plan (i.e. 2 new monitoring
wells, 6 groundwater samples, 5 exterior soil gas sampling points and 6 soil borings)
☒ Discuss samples to be collected by media and source area/location. Generally, the reasoning for the
sample locations selected.
☒ Describe depths of samples to be collected (Reference Table 1) or how that decision will be made in
the field, if needed.
☒ State for what each sample will be analyzed (briefly). Reference Table 1.
Note: For all residential reuses, sub slab vapor is required, if no slabs exist, exterior soil gas is required within all proposed footprints.
Section 3 – Sampling Methodology
☒ Reference the guidance documents you intend to use. IHSB, EPA SESD, VI Guidance, Well
Construction Rules (NCAC 2C). Note deviations or methodology planned that is not covered by such guidance (e.g., multi-increment sampling, passive air samplers, mobile labs, Hapsite, simultaneous indoor/outdoor radon, high-volume sub-slab vapor testing, PFAS sampling).
☒ Describe what will be installed (soil boring, temporary well, permanent well, sub-slab vapor, exterior soil
gas, etc.). Include construction details.
☒ Discuss installation methodology (Hand Auger, DPT, etc.) Discuss Equilibration Times
Work Plan and Report Checklist
Version 3 March 2023

• Monitoring wells (equilibration time prior to development and equilibration post well
development should be 24 hours, per EPA standard protocols).
• Vapor: a. Sub slab vapor with minimally invasive points (e.g. Vapor Pins): Manufacturer’s guidelines generally suggest 20 minutes may be sufficient with an airtight cap installed; or b. Sub slab vapor points (other than minimally invasive points) or exterior soil gas points: at least 24 hours (to be purged at installation and at time of sampling with an air-tight cap in place in the interim).
☒ Discuss sample collection procedures. Include the following, at a minimum:
• Equipment to be used
• Purging methods and volumes
• Stabilization parameters for groundwater sampling
• Field screening methods
• Leak check procedures for sub-slab vapor and exterior soil gas samples (Note this is
required)
• Discuss how and when vacuum readings will be collected (for summa cans)
• Submission of the samples to the laboratory within 48 hours of collection and/or written
documentation of temperature maintenance if the situation requires extension beyond 48
hours prior to lab submittal
☒ Discuss sample point abandonment
Section 4 – Laboratory Analyses
☒ Discuss the proposed analyses (include method number, preparation method, if there are concerns
with short hold times, etc).
☒ Discuss any proposed limitations on the contaminants of concern, if any, and the reason for such
limitation (sufficient previous data, indoor air interferences, etc).
☒ Discuss laboratory certifications. Please note, NC does not certify labs for air samples. Please specify
what certification the proposed air lab holds.
☒ Indicate that the Reporting Limits/Method Detection Limits will meet applicable screening criteria (to the extent feasible). Include reporting of J-Flags to meet criteria.
☒ Indicate what Level QA/QC will be reported by the laboratory. Level II QA/QC is typically acceptable.
Section 5 – QA/QC
☒ Specify the duplicate sample frequency. Minimum requirement: 1 duplicate per 20 samples, per
media, per method.
☐ Discuss Trip Blank. 1 Trip Blank per cooler/shipment of groundwater VOC analyses is required.
☒ Discuss how the lab will have sufficient sample volume for MS/MSD analyses.
☒ Discuss chain of custody and shipping.
Section 6 – Investigation Derived Waste (IDW) Management
☒ Discuss what IDW will be generated and how it is proposed to be managed. Management
recommendations should be in accordance with 15A NCAC 02T.1503 and 15A NCAC 02H. 0106.
Generally, if the Brownfields Property has not previously been assessed, then all IDW must be
containerized and characterized prior to management. Previous assessment data that indicate no
Hazardous Waste (listed or characteristic) is likely to be encountered in the area of proposed
Work Plan and Report Checklist
Version 3 March 2023

assessment will be required before thin spreading of IDW on-site is permitted.
Section 7 – Reporting
This section should discuss the components of the assessment report which will be prepared as a result of
the above sample collection. At a minimum, the report shall include:

☒ Title Page that is consistent with the requirements listed above.
☒ Reporting/summary of site work conducted for all sections outlined above in this checklist;
☒ Summary of findings and possible recommendations;
☒ All applicable tables and figures (shall include at a minimum the items below)
☒ Tables for tabulated analytical data per media sampled and analyzed, compared against
applicable screening levels, sample depths and depth to groundwater;
☒ Figure depicting actual sample locations collected, with each media depicted in the legend,
graphic scale and north arrow; and
☐ Groundwater potentiometric map, with graphic scale and north arrow.
☒ Appendices shall include (as applicable):
☒ Copies of field notes
☒ Boring logs for all soil borings, newly constructed monitoring wells, and exterior soil gas locations
☐ Well construction and abandonment records
Work Plan Approval Signature Page (see Attachment 1). The Consultant shall complete and
submit the Approval Signature Page with the work plan submittal for DEQ signature.

Work Plan and Report Checklist
Version 3 March 2023

Attachments
☒ Attachment 1 – Work Plan Approval Signature Page
☒ Table 1 – Proposed Sample Locations and Analyses on a Summary Table that includes:
☒ Sample ID
☒ Sample Objective
☒ Proposed Depth(s)
☒ Analytical Method(s)
☒ QA/QC Samples
☒ Background Samples

☒ Figure 1 – Site Location Map
☒ Site location on a topographic map base
☒ Graphic scale and north arrow

☒ Figure 2 – Site Map should include the following
☒ Buildings
☐ Historical sample locations
☒ RECs or other areas of concern
☒ Proposed sample locations
☒ Sample identification labels
☐ Background samples
☐ QA/QC samples
☒ Graphic scale and north arrow
☒ High quality aerial suggested as the base map

☐ Figure 3 – Site Potentiometric Map that includes the following
☐ Buildings
☐ Groundwater sample identification labels
☐ Arrow noting direction of groundwater flow
☐ Graphic scale and north arrow

☐ Figure 4 – Site Plume Maps (groundwater, soil vapor, etc.)

☒ Figure 5 – Proposed Development (if available) (Shown on Figure 2)
☒ Overlay of historical and proposed sample locations
☒ Graphic scale and north arrow

☐ Appendix – Summary of Historical Analytical Data (if needed) – to include tables and figures only.

DRAFT

APPENDIX B
Work Plan Approval Signature Page

04/26/2023

DRAFT

APPENDIX C
Historical Analytical Data

DRAFT

APPENDIX D
NCDEQ Brownfields Property Receptor Survey/Checklist

North Carolina Department of Environmental Quality
Division of Waste Management
Brownfields Program
Site:
Address:
City:
County:
Brownfields Project Number:
Date
Property and Building Characteristics
a. Provide occupancy and use information.
c. Describe the foundation construction. Include details on type, floor construction, and depth below grade.
e. Are any subslab ventilation systems or moisture barriers in place? If so, please provide details.
If an existing building is on-site, please respond to the following. Information can be provided on additional
sheets as needed. If numerous buildings are on-site, consult with your PM as only information on specific
buildings may be needed.
b. Describe the construction of the builidng including materials (e.g. wood frame, block), type and size of openings
(e.g. windows, bay doors), and height (number of stories).
% of property that is covered by buildings
BROWNFIELDS PROPERTY RECEPTOR SURVEY
This form was created to clarify and simplify preparing a receptor survey for a brownfield site. Please provide the
information requested below. Distances are measured from the site property boundary unless otherwise
indicated by the DEQ Brownfield’s Project Manager (PM).
Current Usage Proposed UsageSurface Conditions
% of property that is grassed areas
% of property that is agricultural crops
% of property that is paved
NASize of Property (acres)
% of property that is wooded/brush
d. Describe the HVAC system in the building. Include available details on type, equipment location, source of air
return, and design considerations (e.g. positive pressure?).
Rev. 09/2015 Page 1 of 3
North Carolina Department of Environmental Quality
Division of Waste Management
Brownfields Program
Surrounding Property Land Use
North
South
East
West
Utilities
Is there a septic system on-site? (Y or N) _________
Please provide the utility providers for the subject property
a. Natural Gas ___________________________
b. Sewer ___________________________
c. Electricity ___________________________
d. Other __________________________
For surrounding properties, please complete the following table with available information.
Is there a basement within 1,000 ft of the Property
Is there a residence within 1,000 ft of the Property?
Utility/Potential Receptor
Is a buried electrical cable main within 100 ft of Property boundary?
Is a storm water pipe within 100 ft of the Property boundary?
Is a sanitary sewer within 100 ft of the Property boundary?
* If yes, please provide a map or detailed information (distance, direction, depth) of the utility in correlation with
the subject property.
Is a water line main within 100 ft of Property boundary?
Is a natural gas line main within 100 ft of the Property boundary?
Is a buried telephone/ cable main within 100 ft of the Property boundary?
Is a septic system leach field within 500 ft of the Property boundary?
Direction
For the subject property, please provide a map of known buried utilites. If available, include depth to top,
construction material, and diameter of the utilities. In addition, please provide the following information on utilty
providers. If additional assessment is required, the public utility locators should be contacted. This information
can then be added to a site map.
Y/N *
Is a school or daycare center within 1,000 ft of the
?
Specific Land Uses of Interest Y/N *
* If numerous facilities of interest are present, their locations can be placed on a map in lieu of providing specific
addresses.
Distance
(ft)
DirectionDistance
(ft)Address
Please provide information on the following land uses in the vicinity of the subject site, including a map of the
surrounding areas. If specific receptors are present, please provide addresses of the facilities.
Zoning/Land Use Proposed Usage Current Use/Occupant
Rev. 09/2015 Page 2 of 3
North Carolina Department of Environmental Quality
Division of Waste Management
Brownfields Program
Water Supply
What is the potable water supply for the property? Public ______ Private ______
Surface Water & Wetlands
b. List the uses of the water body.
c. What is the source of the water for the
water body?
d. What is the nature of the bottom of the
water body (e.g., rocky or concrete bottom,
drainage ways or impoundments)
If no on-site surface water features, what is the
nearest surface water body?
Are there any wetlands present on the
property? If no wetlands on-site, are wetlands
suspected on adjoining properties?
Is a public water supply well within 1 mile of the Property boundary?
Is a private water supply well within 1,500 ft of the Property
bdIs an irrigation well within 1,500 ft of the Property boundary?
Response/Comments
The purpose of this section is to provide information on the presence of surface waters and/or wetlands on, or in
the vicinity of the Property.
If Private, please provide details of the water supply source (i.e. well location, well construction, etc). If public,
please include the water providers name.
The purpose of this section is to provide information on the water supply for the site and surrounding areas.
a. Is the water body naturally developed or
man-made?
Y/NWater Supply Wells
Please provide the following information regarding water supply wells in the vicinity of the Property. At a
minimum, a windshield survey within 1,500 ft of the property boundaries should be completed to determine if
water supply or irrigation wells may be present. Information from applicable databases can and should be
utilized; however, should not be utilized in lieu of the windshield survey. If multiple wells are present within the
requested radius, please provide a map of the well locations. If needed, please attach a separate table to list all
wells. Please note, the PM may opt for a more extensive water supply well survey if needed.
Are there surface water features on the
property? (If yes, please complete a. to d.)
Provide Information regarding Surface Water
and Wetlands
Distance
(ft)Direction Address
Rev. 09/2015 Page 3 of 3

DRAFT

APPENDIX E
EPA Method TO-15 Analyte List

Analyte Cas No.RDL units MDL Units RDL RDL Units MDL MDL Units
1,1,1-TRICHLOROETHANE 71-55-6 0.2 ppbv 0.074 ppbv 1.09 ug/m3 0.362 ug/m3
1,1,2,2-TETRACHLOROETHANE 79-34-5 0.2 ppbv 0.074 ppbv 1.37 ug/m3 0.396 ug/m3
1,1,2-TRICHLOROETHANE 79-00-5 0.2 ppbv 0.078 ppbv 1.09 ug/m3 0.156 ug/m3
1,1,2-TRICHLOROTRIFLUOROETHANE 76-13-1 0.2 ppbv 0.079 ppbv 1.53 ug/m3 0.527 ug/m3
1,1-DICHLOROETHANE 75-34-3 0.2 ppbv 0.072 ppbv 0.802 ug/m3 0.206 ug/m3
1,1-DICHLOROETHENE 75-35-4 0.2 ppbv 0.076 ppbv 0.793 ug/m3 0.194 ug/m3
1,2,4-TRICHLOROBENZENE 120-82-1 0.63 ppbv 0.148 ppbv 4.66 ug/m3 1.1 ug/m3
1,2,4-TRIMETHYLBENZENE 95-63-6 0.2 ppbv 0.076 ppbv 0.982 ug/m3 0.237 ug/m3
1,2-DIBROMOETHANE 106-93-4 0.2 ppbv 0.072 ppbv 1.54 ug/m3 0.142 ug/m3
1,2-DICHLOROBENZENE 95-50-1 0.2 ppbv 0.128 ppbv 1.2 ug/m3 0.363 ug/m3
1,2-DICHLOROETHANE 107-06-2 0.2 ppbv 0.07 ppbv 0.81 ug/m3 0.249 ug/m3
1,2-DICHLOROPROPANE 78-87-5 0.2 ppbv 0.076 ppbv 0.924 ug/m3 0.277 ug/m3
1,2-DICHLOROTETRAFLUOROETHANE 76-14-2 0.2 ppbv 0.089 ppbv 1.4 ug/m3 0.32 ug/m3
1,3,5-TRIMETHYLBENZENE 108-67-8 0.2 ppbv 0.078 ppbv 0.982 ug/m3 0.31 ug/m3
1,3-BUTADIENE 106-99-0 2 ppbv 0.104 ppbv 4.43 ug/m3 0.125 ug/m3
1,3-DICHLOROBENZENE 541-73-1 0.2 ppbv 0.182 ppbv 1.2 ug/m3 0.359 ug/m3
1,4-DICHLOROBENZENE 106-46-7 0.2 ppbv 0.056 ppbv 1.2 ug/m3 0.335 ug/m3
1,4-DIOXANE 123-91-1 0.2 ppbv 0.083 ppbv 0.721 ug/m3 0.2 ug/m3
2,2,4-TRIMETHYLPENTANE 540-84-1 0.2 ppbv 0.133 ppbv 0.934 ug/m3 0.213 ug/m3
2-BUTANONE (MEK)78-93-3 1.25 ppbv 0.081 ppbv 3.69 ug/m3 0.145 ug/m3
2-CHLOROTOLUENE 95-49-8 0.2 ppbv 0.083 ppbv 1.03 ug/m3 0.312 ug/m3
2-PROPANOL 67-63-0 1.25 ppbv 0.264 ppbv 3.07 ug/m3 0.217 ug/m3
4-ETHYLTOLUENE 622-96-8 0.2 ppbv 0.078 ppbv 0.982 ug/m3 0.327 ug/m3
4-METHYL-2-PENTANONE (MIBK)108-10-1 1.25 ppbv 0.077 ppbv 5.12 ug/m3 0.266 ug/m3
ACETONE 67-64-1 1.25 ppbv 0.584 ppbv 2.97 ug/m3 0.135 ug/m3
ALLYL CHLORIDE 107-05-1 0.2 ppbv 0.114 ppbv 0.626 ug/m3 0.171 ug/m3
BENZENE 71-43-2 0.2 ppbv 0.072 ppbv 0.639 ug/m3 0.147 ug/m3
BENZYL CHLORIDE 100-44-7 0.2 ppbv 0.06 ppbv 1.04 ug/m3 0.311 ug/m3
BROMODICHLOROMETHANE 75-27-4 0.2 ppbv 0.07 ppbv 1.34 ug/m3 0.292 ug/m3
BROMOFORM 75-25-2 0.6 ppbv 0.073 ppbv 6.21 ug/m3 0.813 ug/m3
BROMOMETHANE 74-83-9 0.2 ppbv 0.098 ppbv 0.776 ug/m3 0.236 ug/m3
CARBON DISULFIDE 75-15-0 0.2 ppbv 0.102 ppbv 0.622 ug/m3 0.169 ug/m3
CARBON TETRACHLORIDE 56-23-5 0.2 ppbv 0.073 ppbv 1.26 ug/m3 0.368 ug/m3
CHLOROBENZENE 108-90-7 0.2 ppbv 0.083 ppbv 0.924 ug/m3 0.278 ug/m3
CHLORODIBROMOMETHANE 124-48-1 0.2 ppbv 0.073 ppbv 1.7 ug/m3 0.42 ug/m3
CHLOROETHANE 75-00-3 0.2 ppbv 0.1 ppbv 0.528 ug/m3 0.129 ug/m3
CHLOROFORM 67-66-3 0.2 ppbv 0.072 ppbv 0.973 ug/m3 0.279 ug/m3
CHLOROMETHANE 74-87-3 0.2 ppbv 0.103 ppbv 0.413 ug/m3 0.112 ug/m3
CIS-1,2-DICHLOROETHENE 156-59-2 0.2 ppbv 0.078 ppbv 0.793 ug/m3 0.154 ug/m3
CIS-1,3-DICHLOROPROPENE 10061-01-5 0.2 ppbv 0.069 ppbv 0.908 ug/m3 0.267 ug/m3
CYCLOHEXANE 110-82-7 0.2 ppbv 0.075 ppbv 0.689 ug/m3 0.184 ug/m3
DICHLORODIFLUOROMETHANE 75-71-8 0.2 ppbv 0.137 ppbv 0.989 ug/m3 0.297 ug/m3
ETHANOL 64-17-5 1.25 ppbv 0.265 ppbv 1.19 ug/m3 0.157 ug/m3
ETHYLBENZENE 100-41-4 0.2 ppbv 0.084 ppbv 0.867 ug/m3 0.219 ug/m3
HEPTANE 142-82-5 0.2 ppbv 0.104 ppbv 0.818 ug/m3 0.256 ug/m3
HEXACHLORO-1,3-BUTADIENE 87-68-3 0.63 ppbv 0.105 ppbv 6.73 ug/m3 0.7 ug/m3
ISOPROPYLBENZENE 98-82-8 0.2 ppbv 0.078 ppbv 0.983 ug/m3 0.277 ug/m3
M&P-XYLENE 1330-20-7 0.4 ppbv 0.135 ppbv 1.73 ug/m3 0.41 ug/m3
METHYL BUTYL KETONE 591-78-6 1.25 ppbv 0.133 ppbv 5.11 ug/m3 0.279 ug/m3
METHYL METHACRYLATE 80-62-6 0.2 ppbv 0.088 ppbv 0.819 ug/m3 0.317 ug/m3
METHYL TERT-BUTYL ETHER 1634-04-4 0.2 ppbv 0.065 ppbv 0.721 ug/m3 0.182 ug/m3
METHYLENE CHLORIDE 75-09-2 0.2 ppbv 0.098 ppbv 0.694 ug/m3 0.161 ug/m3
N-HEXANE 110-54-3 0.63 ppbv 0.206 ppbv 0.705 ug/m3 0.161 ug/m3
NAPHTHALENE 91-20-3 0.63 ppbv 0.35 ppbv 3.3 ug/m3 0.806 ug/m3
O-XYLENE 95-47-6 0.2 ppbv 0.083 ppbv 0.867 ug/m3 0.274 ug/m3
PROPENE 115-07-1 1.25 ppbv 0.093 ppbv 2.15 ug/m3 0.16 ug/m3
STYRENE 100-42-5 0.2 ppbv 0.079 ppbv 0.851 ug/m3 0.198 ug/m3
Description TO-15 Volatile Organics in Air
Matrix Air
Dep.Volatile Organics
Analyte Cas No.RDL units MDL Units RDL RDL Units MDL MDL Units
Description TO-15 Volatile Organics in Air
Matrix Air
Dep.Volatile Organics
TETRACHLOROETHENE 127-18-4 0.2 ppbv 0.081 ppbv 1.36 ug/m3 0.337 ug/m3
TETRAHYDROFURAN 109-99-9 0.2 ppbv 0.073 ppbv 0.59 ug/m3 0.15 ug/m3
TOLUENE 108-88-3 0.5 ppbv 0.087 ppbv 0.753 ug/m3 0.188 ug/m3
TRANS-1,2-DICHLOROETHENE 156-60-5 0.2 ppbv 0.067 ppbv 0.793 ug/m3 0.184 ug/m3
TRANS-1,3-DICHLOROPROPENE 10061-02-6 0.2 ppbv 0.073 ppbv 0.908 ug/m3 0.197 ug/m3
TRICHLOROETHENE 79-01-6 0.2 ppbv 0.068 ppbv 1.07 ug/m3 0.292 ug/m3
TRICHLOROFLUOROMETHANE 75-69-4 0.2 ppbv 0.082 ppbv 1.12 ug/m3 0.378 ug/m3
VINYL ACETATE 108-05-4 0.2 ppbv 0.116 ppbv 0.704 ug/m3 0.225 ug/m3
VINYL BROMIDE 593-60-2 0.2 ppbv 0.085 ppbv 0.875 ug/m3 0.318 ug/m3
VINYL CHLORIDE 75-01-4 0.2 ppbv 0.095 ppbv 0.511 ug/m3 0.117 ug/m3