25001_Dynatech II_Methan Assessment WP&Approval_2021.04.26

April 26, 2021
Sent Via E-mail Mr. David Hunter Partner Engineering North Carolina, PLLC
8270 Red Oak Blvd, Suite 528 Charlotte, NC 28217 [e-mail] Subject: Work Plan Approval
Dynatech II Brownfields Property Charlotte, Mecklenburg County Brownfields Project No. 25001-21-060 Dear Mr. Hunter:
The North Carolina Department of Environmental Quality (DEQ) Brownfields Program received the Methane Assessment Work Plan dated April 23, 2021 (Work Plan). DEQ Brownfields comments to previous revision dated April 15, 2021 of this Work Plan have been addressed;
therefore, the Work Plan is approved.
Please be advised that this approval from DEQ Brownfields does not waive any applicable requirement to obtain any necessary permits, licenses or certifications which may be required from other state or local entities. If you have any questions, please feel free to contact me at 704-661-
0330, or via e-mail at [e-mail]
Sincerely,

Carolyn Minnich Brownfields Project Manager ec: Wes McAdams [e-mail]
Mason Ellerbe [e-mail]
Chang, Michael [e-mail] Chris Walker [e-mail]

800-419-4923 www.PARTNEResi.com

April 23, 2021

Carolyn Minnich
Brownfields Project Manager
Division of Waste Management
1646 Mail Service Center
Raleigh, NC 27699-1646

Subject: Methane Assessment Work Plan
Former Dynatech Parcel and Multifamily Parcels
Dynatech II Brownfields Project
2207, 2213, 2301, 2315, 2320, and 2325 Toomey Avenue
and 704 West Tremont Avenue
Charlotte, North Carolina 28203
Partner Project Number: 21-370620
Brownfields Project Number 25001-21-060
Dear Ms. Minnich:
On behalf of Abacus Acquisitions, LLC (Abacus), Partner Engineering North Carolina, PLLC (Partner) is
pleased to provide a Methane Assessment Work Plan regarding the referenced property for your review.
We have proposed the methane assessment prior to other Brownfields Assessment work planning, due to
the crucial nature of timing and design for the former Dynatech and multifamily portions of the project on
the overall Dynatech II mixed use project.
If you have any questions concerning the plan, please contact Dave Hunter at [phone].
Sincerely,
Partner Engineering North Carolina, PLLC

Dave Hunter, PG Kristine M. MacWilliams, PE
Technical Director Technical Director – Subsurface Investigation

Michael Chang
Relationship Manager
Methane Assessment Work Plan
Dynatech II Brownfields Property
Charlotte, North Carolina
Partner Project Number: 21-370620
Brownfields Project Number 25001-21-060
April 23, 2021

TABLE OF CONTENTS
1.0 Introduction ..................................................................................................................................... 1
1.1 Background ........................................................................................................................................................................ 2
1.2 Objectives ............................................................................................................................................................................ 5
2.0 Methane Assessment Activities .................................................................................................... 6
2.1 Methane Assessment Locations ................................................................................................................................. 6
2.2 Subsurface Gas and Pressure Measurements ....................................................................................................... 7
2.3 Reporting............................................................................................................................................................................. 8

ATTACHMENTS

Tables 1A. Summary of Methane Soil Gas Results – Multifamily Parcels, January 13 and 14, 2021
1B. Summary of Methane Soil Gas Results – Multifamily Parcels, February 2, 2021
2. Summary of Methane Soil Gas Results – Former Dynatech Parcel, August 18, 2020
3. Proposed Sample Summary – Methane Assessment Work Plan

Figures 1. Property Location Map
2. Site Map on Recent Aerial Photograph
3. Site Map with Proposed Redevelopment Conditions

Appendix A. Methane Analytical Data
B. Los Angeles Department of Building Safety – Site Testing Standards for Methane
Methane Assessment Work Plan
Dynatech II Brownfields Property
Charlotte, North Carolina
Partner Project Number: 21-307620
Brownfields Project Number 25001-21-060
April 23, 2021
Page 1

1.0 INTRODUCTION
Partner developed the Methane Assessment Work Plan on behalf of Abacus to evaluate the former
Dynatech and multifamily parcels which are part of a larger area currently designated as the Dynatech II
Brownfields Project. The project will entail redevelopment of multiple properties near the intersection of
Toomey Avenue and West Tremont Avenue in the South End area of Charlotte, North Carolina. The work
plan addresses potential methane impact from buried debris at and near the former Dynatech and
multifamily parcels. The former Dynatech parcel consists of 2.089 acres on a parcel with the address of 2213
Toomey avenue, and the multifamily parcels consist of a 6.712-acre assemblage of properties with addresses
of 2207, 2301, 2315, and 2325 Toomey Avenue and 704 West Tremont Avenue. Parcel recombination will
occur so that the former Dynatech building will be located on a separate parcel from the multifamily parcel.
Abacus and Partner intend for the Methane Assessment Work Plan to establish requirements related to
methane for both the former Dynatech and multifamily parcels. In addition to debris found at the in the
subsurface at the multifamily parcels, nearby Brownfields Program projects (Adams and Powers sites)
contain buried debris and have had methane assessment. An additional area of the Dynatech II project
includes a parcel at 2320 Toomey Avenue, which is not included in the Methane Assessment Work Plan,
because no debris has been encountered in the subsurface and because of the distance from potentially
affected areas. Figure 1 indicates the overall Dynatech II project location, and Figure 2 shows the individual
parcels, including the planned recombination configuration.
Partner has proposed the methane assessment prior to other Brownfields Assessment work planning, due
to the crucial nature of timing and civil design for the multifamily portion of the project on the overall
Dynatech II mixed use project. The work plan is designed to conform with the North Carolina Department
of Environmental Quality (NC DEQ) Brownfields Program Methane Assessment Protocol (rev. December
2020).
Dynatech II Brownfields project lies near and to the northeast of the intersection of I-77 and Remount Road,
near the southern extent of the redeveloped area of South End. The area contains commercial, light
industrial, residential, and vacant land, which was previously developed. The project may include the
aggregation of properties for mixed use redevelopment with potential amendment to the current
Brownfields application for property assemblage and Prospective Developers. The current project makeup
includes:
• Five properties with addresses of 2207, 2301, 2315 (728 W Tremont), and 2325 Toomey Avenue and
704 West Tremont Avenue, which are slated for redevelopment with multifamily housing in five
buildings. The properties currently contain three buildings totaling 15,664 square feet on 6.712
acres and is known as the multifamily parcels.
• An affiliate of the Prospective Developer joined the project with addition of the Dynatech
Brownfields Property at 2213 Toomey Avenue for commercial mixed use. The former Dynatech
facility contains a 34,427 square foot industrial building on 2.089 acres.
Methane Assessment Work Plan
Dynatech II Brownfields Property
Charlotte, North Carolina
Partner Project Number: 21-307620
Brownfields Project Number 25001-21-060
April 23, 2021
Page 2

• Addition of 2320 Toomey Avenue is planned for commercial mixed use. The property contains a
74,336 square foot light industrial building on 4.198 acres.
The Dynatech II project received a Letter of Eligibility (LOE) from the Brownfields Program dated February
5, 2021. The letter verifies that the intended redevelopment may include multi-family residential, industrial,
office, parking, retail, warehousing, commercial, recreational, and institutional uses. The LOE noted prior
Partner Phase I Environmental Site Assessments (Phase Is) dated June 8, 2020 for the 2213 Toomey Avenue
parcel (former Dynatech facility) and December 11, 2020 for the multifamily parcels. The LOE also noted
that prior Brownfields Property information from the NC DEQ may be used during the evaluation process
and requested additional information on the properties that Abacus could provide. Abacus submitted the
following prior reports to the Brownfields Program on February 26, 2021:
• Methane analytical data from August 2020 for 2213 Toomey Avenue;
• Phase I Environmental Site Assessment dated November 2, 2020 – 2320 Toomey Avenue;
• Phase II Subsurface Investigation dated December 17, 2020 – 2320 Toomey Avenue;
• Phase II Subsurface Investigation dated February 12, 2021 – Multifamily Assemblage
• Geotechnical Report dated January 19, 2021 – Multifamily Assemblage
• Geotechnical Report Addendum 1 dated February 22, 2021 – Multifamily Assemblage
1.1 Background
The following discussion outlines the environmental conditions likely to affect the three main parts of
project property:
Multifamily Parcels
The December 2020 Phase I provided history of the multifamily assemblage that indicated use from 1931
through 2014 as single family residential properties and a commercial building (2315 Toomey/728 West
Tremont) and former use as row houses for multifamily residential (704 West Tremont) by 1943. The row
houses, one of the single family residences, and the former commercial building were razed by 1993. The
existing warehouse was constructed on the south parcel in 1994. Prior and current tenants for the
multifamily parcels did not include businesses suggestive of recognized environmental conditions (RECs).
The site reconnaissance of the 2207 Toomey Avenue parcel found above-ground storage tanks (ASTs) and
55-gallon steel drums in an area with heavy vegetation that prevented observations of soil conditions that
might have indicated releases. The presence of drums and ASTs therefore constituted a REC.
The multifamily parcels had a REC in relation to potential migration of methane impact from the
southeastern-adjacent Adams Property at 510 West Tremont Avenue. The Adams Property has limited
subsurface impact by metals, petroleum hydrocarbons, semivolatile organic compounds (SVOCs), and
volatile organic compounds (VOCs) which do not appear to have migrated off-property, based on a
separate Brownfields assessment. The Adams Property has a Brownfields LOE but has not yet filed a Notice
of Brownfields Property. The southeast-adjacent Powers Site at 536 West Tremont Avenue operated in the
early 20th Century as a quarry, which was later filled with casting sand, concrete, wood debris, gravel, and
Methane Assessment Work Plan
Dynatech II Brownfields Property
Charlotte, North Carolina
Partner Project Number: 21-307620
Brownfields Project Number 25001-21-060
April 23, 2021
Page 3

soil from unknown sources. Later operations including manufacturing, as an automotive salvage yard, and
for dumping occurred prior to the site entering the Brownfields Program with a Notice of Brownfields
Property being filed on October 6, 2017. Subsurface impact by metals, petroleum, and SVOCs do not
appear to have left the property, but methane had sufficiently elevated conditions for the resulting
condition to be characterized as REC for the multifamily parcels. The former Dynatech facility discharged
hazardous plating waste to a septic system on the southeastern part of the multifamily parcel, as discussed
below, and the discharge is also considered a controlled REC (CREC).
To address the RECs and CREC related to the multifamily parcels and conditions related to possible buried
debris, Partner conducted a Phase II Subsurface Investigation and a Geotechnical Report with Addendum
for test pits. The environmental analytical included a standard Brownfield Program suite of VOCs, SVOCs,
and Resource Conservation and Recovery Act (RCRA) metals, with the following detections and conclusions
applying to the multifamily parcels:
• Three SVOCs were found in soil at a boring near the septic system on the southwestern part of
the site at concentrations exceeding Residential Preliminary Soil Remediation Goals (PSRGs).
• Arsenic was detected in soil at concentrations exceeding Residential PSRGs near the septic
system and at another boring on the southwestern part of the property. Total chromium was
detected in soil above Residential and Industrial / Commercial PSRGs for each of the soil samples
collected across the property, and hexavalent chromium was detected in the soil sample at the
septic system and in soil at a boring on the northern part of the site above Residential PSRGs.
• Total chromium in groundwater exceeded the North Carolina 2L Groundwater Standard near
the septic system, and total chromium and lead in groundwater exceeded the 2L Groundwater
Standard at a boring on the northwestern part of the property.
• Soil gas contained vinyl chloride and benzene above Residential and Non-Residential Sub-Slab
and Exterior Soil Gas Screening Limits (SGSL) and ethylbenzene above Residential SGSLs in a
boring on the northern part of the multifamily parcels. A common ambient air constituent in
urban areas, 1,3-butadeine, was encountered in six of seven samples across the property but is
likely unrelated to site environmental impact.
• Methane was below detections limits for nine of 10 samples and was found at 0.672 percent by
volume (Less than the Brownfields Program threshold criteria of 1.25 percent by volume) at a
monitoring point on the southeastern part of the parcels (MVSG-1A). For reference, methane is
considered combustible between a Lower Explosive Limit of 5 percent and an Upper Explosive
Limit of approximately 15 percent by volume.
• Geotechnical exploration found unsuitable soils for standard construction due to debris (wood,
masonry, etc) to depths between approximately 2 and 8 feet below ground surface (bgs) across
much of the northern part of the parcels and to a depth of 16 feet bgs on the south-central part
of the parcels.
The results of investigations indicate a limited area of SVOC impact associated with the former septic
system; metals impact to soil near the septic system and potentially at other locations surrounding the
former Dynatech facility; and possible groundwater impact by metals. An evaluation of risk for individuals
found pathways not complete for soil and groundwater exposures, and vapor intrusion calculations found
Methane Assessment Work Plan
Dynatech II Brownfields Property
Charlotte, North Carolina
Partner Project Number: 21-307620
Brownfields Project Number 25001-21-060
April 23, 2021
Page 4

hazard index for residents exceeded a typical risk threshold of 0.1 based on the detections of petroleum
and a chlorinated solvent at one location on the northern part of the property. The unsuitable soils with
debris constitute a potential source of methane and an adverse condition in relation to geotechnical
considerations.
Table 1A and Table 1B indicate methane information from prior assessment (January 13 and 14, 2021 and
February 2, 2021, respectively) on the multifamily parcels at the Dynatech II project, and Figure 2 and
Figure 3 indicate the locations of prior testing. Appendix A contains the methane analytical data via EPA
Method TO-15, for samples collected on February 2, 2021.
Dynatech Parcel
According to available historical sources, the Dynatech parcel was formerly undeveloped as early as 1905
and was developed with the existing improvements in 1969. Tenants on the subject property have included
Eastern Transit Storage, a hauling business of household goods (1968-1973); Frank G.W. McKittrick Textile
Machinery, a retail operation of textile machinery (1973-1985); Dynatech Industries, Inc. (1985-1990); RG
Automation/Carolina Custom Tank (1996-Present). Most notably, Dynatech conducted chrome plating of
compressor parts from approximately 1985 to 1990. The facility generated hazardous waste and conducted
illicit discharge of plating waste to a septic system located on the 728 West Tremont Avenue parcel of the
multifamily parcels. Various assessment activities at the Dynatech parcel in the 1990s confirmed metals and
methyl ethyl ketone (MEK) impact to the subsurface. Removal actions by the United States Environmental
Protection Agency (EPA) were conducted for soil, groundwater, and wastewater as one-time remedial
remedies during the early 1990s. Further assessment found that the site warranted a No Further Remedial
Action Planned (NFRAP) status under the federal Superfund Program, with subsequent investigation under
the (NC DEQ), including a Brownfields Assessment, confirming modest subsurface impact above standards.
The site entered the North Carolina Brownfields Program with a Notice of Brownfields Property and
Environmental Land Use Restrictions (ELUR), dated October 23, 2003. Subsequent compliance inspections
show that the restrictions set forth in the ELUR continue to be met. Based on the ELURs and Brownfields
property status, the septic system for disposal of hazardous waste on the multifamily parcels constitutes a
CREC for the Dynatech parcel.
Partner conducted methane monitoring at the Dynatech parcel during August 2020 and found no methane
above the method detection limits, which were lower than 5 percent of the LEL for methane. Table 2 and
indicates methane information from the prior assessment, and Figure 2 and Figure 3 indicate the
locations of prior testing (SG-1 through SG-3). Appendix A contains the methane analytical data via EPA
Method TO-15, for the samples collected on August 18, 2020.
2320 Toomey Avenue Parcel
According to available historical sources, the subject property was formerly undeveloped from as early as
1905; developed with a single-family residence from at least 1938 to circa 1965; and then remained vacant
land from 1967 until the current improvements were constructed in 1971. Tenants on the subject property
Methane Assessment Work Plan
Dynatech II Brownfields Property
Charlotte, North Carolina
Partner Project Number: 21-307620
Brownfields Project Number 25001-21-060
April 23, 2021
Page 5

have included Delta Knitting Mills Inc. (1974); Service First Inc. (1979); Donl Inc. Athletic Clothing
Manufacturer (1989); Smart Products Incorporated (1999-2004); and Service Metal Inc. (2005-Present).
Current and prior tenants for the 2320 Toomey Avenue parcel did not include business operations likely to
result in RECs; however, the nearby apparently upgradient location of the former Dynatech facility and its
illicit discharge to a septic system on the multifamily parcels constitute a CREC. To evaluate the potentially
adverse environmental condition for 2320 Toomey Avenue, Partner performed a Phase II Subsurface
Investigation. The standard Brownfields Program suite of analytical (VOCs, SVOCs, and RCRA metals) was
performed, with limited detections above standards, and the following conclusions:
• Arsenic, total chromium, and selenium in soil exceeded NC DEQ Residential PSRGs (arsenic and
total chromium), Industrial / Commercial PSRGs (arsenic and total chromium), and the Protection
of Groundwater PSRG (Selenium) at each of the assessment locations, which were located on the
northern end of the parcel.
• Groundwater contained chromium and lead above the 2L Groundwater Standards in unfiltered
samples, only at the location closest to the former Dynatech facility. A filtered sample contained
only total chromium above the 2L Groundwater Standard.
• Soil gas assessment for VOCs, also at the northeastern end of the parcel, found only 1,3-butadiene
above applicable SGSLs. No methane assessment was conducted on the 2320 Toomey Avenue
Parcel; however, no debris has been encountered at the parcel, and areas containing debris and
other Brownfields properties with methane impact (Adams and Powers sites) are distant from the
parcel.
Thus, in addition to the CREC, business environmental risk exists for 2320 Toomey Avenue, because known
metal impacts remain associated with the Dynatech facility.
More detailed discussions of the project and vicinity environmental conditions across the Dynatech II project
properties are provided in previous reports.
1.2 Objectives
The Methane Assessment Work Plan will provide information in accordance with NC DEQ Brownfields
Program requirements for residential properties, specifically related to the multifamily parcels at the
Dynatech II Brownfields Property. The effort should establish subsurface conditions for risk evaluation in
relation to redevelopment for multifamily residential use. Partner and Abacus anticipate further Brownfields
Assessment work planning for the entire project. The review and approval of the Methane Assessment Work
Plan will provide rapid certainty for redevelopment with current design, modification of design, or other
conditions for the multifamily parcels to suit site conditions.

Methane Assessment Work Plan
Dynatech II Brownfields Property
Charlotte, North Carolina
Partner Project Number: 21-307620
Brownfields Project Number 25001-21-060
April 23, 2021
Page 6

2.0 METHANE ASSESSMENT ACTIVITIES
The Methane Assessment activities will provide subsurface gas conditions related to buried debris at and in
the vicinity of the multifamily parcel of the Dynatech II project. The work will be conducted in general
conformance with applicable regulatory guidance documents:
• NCDEQ Brownfields Program Methane Assessment Protocol (July 2020 – Rev. December 2020) using
the Threshold Criteria for Methane Site Development (September 2020);
• NCDEQ Brownfields Program Environmental Site Assessment Work Plan Minimum Requirements
Checklist (November 2018);
• NCDEQ Division of Waste Management (DWM) Vapor Intrusion Guidance (VI Guidance; March
2018);
• The NCDEQ Inactive Hazardous Sites Branch (IHSB) Guidelines for Assessment and Cleanup of
Contaminated Sites (January 2020);
• The NCDEQ Solid Waste Division Section 6 of the NC DEQ Solid Waste Landfill Gas Monitoring
Guidance (November 2010).
• The current United States Environmental Protection Agency (USEPA) Region IV Science and
Ecosystem Support Division (SESD) Field Branches Quality System and Technical Procedures; and
• Los Angeles Department of Building Safety Site Testing Standards for Methane (LA Standards for
Methane; January 2014).
• Electric Power Research Institute Reference Handbook for Site Specific Assessment of Subsurface
Vapor Intrusion to Indoor air, Appendix E (2005).
Partner will conduct project mobilization activities including development of a site Health and Safety Plan
for site project personnel in accordance with Occupational Safety and Health Administration (OSHA)
regulations, most specifically United States Code 1910.120 for Hazardous Waste Operations. We will contact
the public utility location service at least three days prior to field activities, and we will also contract with a
private utility locator to clear each assessment location for utilities and potential site subgrade infrastructure
before assessment activities. As a final precaution, the drilling subcontractor will manually clear each
location to a depth of approximately 5 feet (bgs) prior to drilling equipment use.
2.1 Methane Assessment Locations
Partner will install nested methane soil gas (MSG) monitoring points in 19 locations at the proposed
multifamily parcels to evaluate potential gas generation associated with historic debris disposal, including
methane, and to evaluate potential methane migration from the nearby Adams and Powers Brownfields
sites. The MSG monitoring locations will be installed for long-term testing and will be suitable for evaluation
of other subsurface vapor conditions. Each location will have discreet sample collection points at
appropriate intervals to evaluate debris gas generation from ground surface to the water table or into
natural soils beneath debris. We anticipate sample intervals on the southwestern part of the site to have
two intervals: one point at approximately 5 ft bgs and a second point at approximately 10 ft bgs. Locations
Methane Assessment Work Plan
Dynatech II Brownfields Property
Charlotte, North Carolina
Partner Project Number: 21-307620
Brownfields Project Number 25001-21-060
April 23, 2021
Page 7

in other multifamily parcel areas with greater depths to the base of debris fill/water table or in locations
with previous pressure or methane detections will have an additional sampling point at 15 to 20 ft bgs.
Given the approximate site area and the Methane Assessment Protocol, Partner anticipates that the 19 MSG
locations will provide guidance-applicable spacing for coverage of the multifamily parcels, at one MSG
nested-point per 20,000 square feet of property area. Figure 2 and Figure 3 indicate the locations of the
proposed MSG monitoring locations, and Table 3 provides sample summary information.
A qualified subcontractor will complete the installations described above to meet general conformance with
the LA Standards for Methane. Appendix B contains a copy of the LA Standards for Methane. For boring
installations, the MSG points will be nested in a single borehole, so that six inches of bentonite will be placed
and hydrated with distilled water at the base of the boring at 15 to 20 ft bgs. A porous polypropylene filter
tip will be affixed to ¼-inch diameter polypropylene tubing that is extended into the borehole at one foot
above the bentonite seal. A filter sand pack will be emplaced surrounding and to one foot above the filter
tip, and another one foot of hydrated bentonite seal will be installed above the interval. Separate installation
of polypropylene filter packs and tubing will continue with filter/sand pack Installation at progressively
shallower intervals so that gas collection intervals are centered at 10 and 5 ft bgs in each borehole to create
a nested MSG location. In certain locations where natural soil is found at or near ground surface, the MSG
points will only extend to approximately 10 ft bgs, with two assessment intervals, centered at 5 and 10 ft
bgs. For surface finish, a hydrated bentonite seal will be extended above the upper collection interval, and
a manhole surface finish with a bolt-down cover will be installed in a concrete pad similar to a monitor well
surface finish. The Standards document, on page 8 in Appendix B, indicates installation similar to the
locations planned at the multifamily parcels.
The MSG point installation will generate minor amounts of investigation derived waste (IDW). For locations
where the waste is soil with no field indications of impact, the IDW will be spread in a thin layer across the
ground surface near the MSG point. If debris from the subsurface or other indications of impact are
encountered with the IDW, the material will be collected into labeled 55-gallon drums and staged at the
subject property pending results of a composite IDW sample appropriate for waste characterization and
disposal at a suitable facility.
2.2 Subsurface Gas and Pressure Measurements
Partner will use forms from the LADBS Standard and perform the field work in accordance with the
Brownfields Program Methane Testing Protocol including the guidance documents listed above. Quality
Assurance and Quality Control (QA/QC) will include attention to the required steps (Initial Shallow Soil Gas
Test and Gas Probe Test) and measurements (Steps 3-6 of the Shallow Gas Test) detailed in the Brownfields
Program Methane Assessment Protocol. Equipment QA/QC will include routine equipment maintenance and
cleaning, periodic factory or representative calibration, calibration as required for normal operation, and
bump check testing with a commercial five-gas mixture with a calibration certificate. The instrument will
field-calibrated and bump tested at least twice per day or at a more frequent interval if specified by
Methane Assessment Work Plan
Dynatech II Brownfields Property
Charlotte, North Carolina
Partner Project Number: 21-307620
Brownfields Project Number 25001-21-060
April 23, 2021
Page 8

manufacturer or regulatory guidelines. Typical protocol for environmental drilling and field work will also
be conducted in accordance with the EPA Field Branches Quality System and Technical Procedures.
Upon completion of each MSG point, the polypropylene tubing tips within each manhole will be capped
with a closed petcock valve composed of inert material, so that an airtight seal is formed and subsurface
conditions can equilibrate without surface atmospheric interference. The locations will be left for a minimum
of 48 hours of equilibration after installation, before additional assessment occurs. Field personnel will then
collect static and differential pressure readings from each depth interval at each monitoring point. The
pressure readings will be collected with a Landtec Gem 5000, or equivalent, immediately upon accessing
each MSG point and prior to conducing seal efficacy checks using helium gas as described below.
Seal efficacy checks will be conducted at each MSG point using a shroud, helium gas, and sample tube
valving. The efficacy check is another form of QA/QC to minimize inclusion of ambient atmosphere into soil
gas that is being assessed. The shroud will be affixed around the MSG point surface, each of the ¼-inch
tubing leads to subsurface intervals will be connected to a three way valve, which accesses the shroud
interior and subsurface. The shroud interior will be filled with helium, and the subsurface will be purged of
more than three annular volumes from each monitoring zone, using a syringe or equivalent relatively low
flow method. By toggling each valve from closed, to purged subsurface interval, to shroud interior, gas will
be collected into a Tedlar bag for the shroud and each interval. Measurements of helium concentrations
with a calibrated field instrument will then be collected from the Tedlar bags for comparison. If the purged
subsurface interval contains less than 10 percent of the helium concentration in the shroud, the interval will
be deemed suitably sealed and available for soil gas field measurements or other soil gas collection.
After successful seal efficacy testing, Partner will collect field readings of subsurface gas from each MSG
point and interval using a Landtec Gem 5000, or equivalent for oxygen, carbon dioxide, and methane as
percent by volume, percent LEL, and parts per million vapor. After this first round of measurements, the
valves at the MSG points will be closed for a minimum of 24 hours, and a second round of pressure
measurements, oxygen, carbon dioxide, and methane (percent volume and LEL) will be collected. The
second round of measurements will be collected at a different time of day than the first round, and during
the second round, at least two sets of pressure and gas measurements will be conducted.
2.3 Reporting
Partner will produce a Methane Assessment Report documenting the findings after the initial rounds of
monitoring from the MSG point network at the Dynatech II multifamily parcels. The report will contain a
description of site activities, a discussion of findings, conclusions, and recommendations in relation to NC
DEQ guidance and procedures as derived from field data. If deviations from the work plan occur during
field activities, a discussion of rationale for the changes will be provided. The report will also contain figures
indicating sample locations, schematics of MSG point installations, and a table documenting the data
gathered during the field activities for each depth interval and location, including peak and stabilized
concentrations of methane in percent by volume, percent LEL, and parts per million vapor), carbon dioxide,
Methane Assessment Work Plan
Dynatech II Brownfields Property
Charlotte, North Carolina
Partner Project Number: 21-307620
Brownfields Project Number 25001-21-060
April 23, 2021
Page 9

and oxygen. The report will append field notes and instrument calibration, service records, time-stamp
documentation of readings, and other appropriate documentation. The report will include the Partner
professional engineering corporate license number and the seal and signature of the licensed professional
in responsible charge of the project.

TABLES
Table 1A
Summary of Methane Soil Gas Results
Multifamily Parcels
Dynatech II Brownfields Project
Charlotte, North Carolina 28203
Partner Project Number 21-370620
Brownfields Project Number 25001-21-060
January 13 and 14, 2021
Methane NA NA NA NA NA NA NA NA NA NA 1.25
Methane 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.25
Static Pressure 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 N/A
Differential Pressure -0.021 -0.025 -0.020 -0.023 -0.023 -0.027 -0.027 -0.026 -0.035 -0.030 N/A
Notes:
NCDEQ = North Carolina Department of Environmental Quality
%bv = Percent by volume
< = not detected above indicated laboratory reporting limit (RL)
NA = Not analyzed
N/A = Not applicable
Methane via TO-15 (%bv)
Methane via LandTec Gem 2000 Field Instrument (%bv)
Pressure via LandTec Gem 2000 Field Instrument (Inches of Water)
MVSG-3 MVSG-4 MSVG-5 MVSG-6 MVSG-7
NCDEQ Methane
Threshold Criteria for
Residential Re-Use
Analyte MSG-1 MSG-2 MSG-3 MSVG-1 MVSG-2
Table 1B
Summary of Methane Soil Gas Results
Multifamily Parcels
Dynatech II Brownfields Project
Charlotte, North Carolina 28203
Partner Project Number 21-370620
Brownfields Project Number 25001-21-060
February 2, 2021
Methane <0.0584 <0.0584 <0.0584 0.672 <0.0584 <0.0584 <0.0584 <0.0584 <0.0584 <0.0584 1.25
Methane 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.25
Static Pressure 0.1 0.1 0.1 0.1 0.1 0.0 0.1 0.0 0.1 7.8 N/A
Differential Pressure -0.050 -0.050 -0.400 -0.098 -0.050 -0.098 -0.050 -0.044 -0.045 0.000 N/A
Notes:
NCDEQ = North Carolina Department of Environmental Quality
%bv = Percent by volume
< = not detected above indicated laboratory reporting limit (RL)
N/A = Not applicable
Methane via LandTec Gem 2000 Field Instrument (%bv)
Pressure via LandTec Gem 2000 Field Instrument (Inches of Water)
Methane via TO-15 (%bv)
MVSG-3A MVSG-4A MSVG-5A MVSG-6A MVSG-7A
NCDEQ Methane
Threshold Criteria for
Residential Re-Use
Analyte MSG-1A MSG-2A MSG-3A MSVG-1A MVSG-2A
Table 2
Summary of Methane Soil Gas Results
Foremer Dynatech Parcel
Dynatech II Brownfields Project
Charlotte, North Carolina 28203
Partner Project Number 21-370620
Brownfields Project Number 25001-21-060
August 18, 2020
Methane <0.11 <0.12 <0.12 1.25
Methane 0.00 0.00 0.02 1.25
Notes:
NCDEQ = North Carolina Department of Environmental Quality
%bv = Percent by volume
< = not detected above indicated laboratory reporting limit (RL)
Static and differnetial pressures not available for this event
Methane via TO-15 (%bv)
Methane via LandTec Gem 2000 Field Instrument (%bv)
NCDEQ Methane
Threshold Criteria for
Residential Re-Use
Analyte SG 1 SG 2 SG 3
Sample Locations Sample Type Sample Objectives Sample Depth Intervals Number of
Samples Analysis
MSG-4, MSG-5, MSG-6, MSG-12, MSG-
14, MSG-15 Soil Gas Vapor Intrusion Risk
Evaluation Centered on 5 and 10 ft bgs 48 Methane, carbon dioxide, oxygen,
hydrogen sulfide (Field Meter)
MSG-7, MSG-8, MSG-9, MSG-10, MSG-
11, MSG-13, MSG-16, MSG-17, MSG-
18, MSG-19, MSG-20, MSG-21, MSG-
22
Soil Gas Vapor Intrusion Risk
Evaluation
Centered on 5 and 10 ft bgs
and from 15 to 20 ft bgs 156 Methane, carbon dioxide, oxygen,
hydrogen sulfide (Field Meter)
Notes:
ft bgs = feet below ground surface
Sample intervals at 5 and 10 ft bgs are 1 foot in thickness
Sample numbers include two samples/measurements for each single day event, with two single day events 48 hours apart (4 separate samples/measurements at each point).
Six nested locations have two points (6 x 2 x 4 = 56 samples), and 13 nested locations have three points (13 x 3 x 4 =156 samples).
Table 3
Proposed Sample Summary
Methane Assessment Work Plan
Multifamily Parcels - Dynatech II Brownfields Project
Charlotte, North Carolina
Partner Project Number 21-370620 / Brownfields Project Number 25001-21-060

FIGURES
Dynatech II Brownfields
Project Properties
Charlotte, North Carolina 28217
8720 Red Oak Boulevard, Suite 528
www.partneresi.com
Fax.: [phone]
Tel.: [phone]
Date Project No.
Reference Dwg.
Project:
PM Drafter
Sketch No.Designer Checked By
Title:
Dynatech II Brownfields Project (25001-21-060)
Toomey Avenue and West Tremont Avenue
Figure 1
Site Location Map
21-3706204.16.21
DH AD F1
AD DH 1
Charlotte, North Carolina
Methane Assessment Work Plan
EXPLANATION
Reference: USGS 7.5 Minute Map, Charlotte East (Site)
& Charlotte West (West Adjacent Map), North
Carolina. Dated 2019. Contour Interval 10 Feet.
Parcel Boundaries
INTERSTATE 77W TREMONT AVENUETOOMEY AVENUEB-1B-2B-4B-3MVSG-7/7AMVSG-6/6AMSG-2/2AMSG-3/3AMVSG-1/1AMVSG-3/3AMVSG-4/4AMVSG-2/2AWOODCRESTAVENUETP-4TP-3TP-5TP-6VILLAGE COURTParcel ID 119064242207 Toomey AvenueFormer Dynatech Parcel(Current Configuration)Parcel ID 119064282213 Toomey AvenueParcel ID 11906417728 W Tremont AvenueParcel ID 119064292301 Toomey AvenueParcel ID 119064262325 Toomey AvenueParcel ID 11906420704 W Tremont AvenueParcel ID 119046262320 Toomey Avenue(Not Part of Multifamily Parcels orMethane Assessment Work Plan)MSG-1/1AMVSG-5/5ATP-2TP-1MSG-4MSG-5MSG-6MSG-7MSG-8MSG-9MSG-11MSG-10MSG-20MSG-15MSG-16MSG-17MSG-19MSG-21MSG-22MSG-12MSG-13MSG-14MSG-18Planned PropertyRecombination2213 Toomey AvenueMethane Assessment AreaAPPROXIMATE SCALE IN FEET028014070Proposed Methane Assessment LocationsIMAGE SOURCE: NC ONEMAP (2019 AERIAL IMAGE)Test PitNCharlotte, North Carolina 282178720 Red Oak Boulevard, Suite 528www.partneresi.comFax.: 704-353-7050Tel.: [phone]DateProject No.Reference Dwg.Project:PMDrafterSketch No.DesignerChecked ByTitle:Dynatech II Brownfields Project (25001-21-060)Toomey Avenue and West Tremont AvenueFigure 2Site Map on Recent Aerial21-3706204.23.21DHADF2ADDH2Charlotte, North CarolinaPhotograph (2019)Soil Boring Fill withDebris DepthsB-1: 0 Ft BgsB-2: 0 Ft BgsB-3: 6 Ft BgsB-4: 3 Ft BgsPhase II Assessment LocationsWork Plan Assessment LocationsEXPLANATIONTest Pit Fill withDebris DepthsTP-1: ~8 Ft BgsTP-2: ~2 Ft BgsTP-3: ~2.5 Ft BgsTP-4: ~6.0 Ft BgsTP-5: ~4 Ft BgsTP-6: ~16 Ft BgsSoil Boring LocationDynatech II Brownfields Project ParcelsMethane Soil Vapor SampleMethane and VOC Soil Vapor Sample
W TREMONT AVENUETOOMEY AVENUEB-1B-2B-4B-3MVSG-7/7AMVSG-6/6AMSG-2/2AMSG-3/3AMVSG-1/1AMVSG-3/3AMVSG-4/4AMVSG-2/2AWOODCRESTAVENUETP-4TP-3TP-5TP-6VILLAGE COURTMSG-1/1AMVSG-5/5ATP-2TP-1MSG-4MSG-5MSG-6MSG-7MSG-8MSG-9MSG-11MSG-10MSG-20MSG-15MSG-16MSG-17MSG-19MSG-21MSG-22MSG-12MSG-13MSG-14MSG-18APPROXIMATE SCALE IN FEET020010050Proposed Methane Assessment LocationsIMAGE SOURCE: NC ONEMAP (2019 AERIAL IMAGE) PROPOSED DEVELOPMENT SOURCE: ABACUS Test PitNCharlotte, North Carolina 282178720 Red Oak Boulevard, Suite 528www.partneresi.comFax.: 704-353-7050Tel.: [phone]DateProject No.Reference Dwg.Project:PMDrafterSketch No.DesignerChecked ByTitle:Dynatech II Brownfields Project (25001-21-060)Toomey Avenue and West Tremont AvenueFigure 3Site Map with Proposed21-3706204.23.21DHADF3ADDH3Charlotte, North CarolinaRedevelopment ConditionsSoil Boring Fill withDebris DepthsB-1: 0 Ft BgsB-2: 0 Ft BgsB-3: 6 Ft BgsB-4: 3 Ft BgsPhase II Assessment LocationsWork Plan Assessment LocationsEXPLANATIONTest Pit Fill withDebris DepthsTP-1: ~8 Ft BgsTP-2: ~2 Ft BgsTP-3: ~2.5 Ft BgsTP-4: ~6.0 Ft BgsTP-5: ~4 Ft BgsTP-6: ~16 Ft BgsSoil Boring LocationDynatech II Brownfields Project ParcelsMethane Soil Vapor SampleMethane and VOC Soil Vapor Sample

APPENDIX A: METHANE ANALYTICAL DATA
#=CL#
February 10, 2021
LIMS USE: FR - WENDELL JOHNSON
LIMS OBJECT ID: 92520159
92520159
Project:
Pace Project No.:
RE:
Wendell Johnson
Partner Engineering
,
TOOMEY AVE MULTIFAMILY PROJECT
Dear Wendell Johnson:
Enclosed are the analytical results for sample(s) received by the laboratory on February 03, 2021. The results relate only
to the samples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the
laboratory's Quality Manual, where applicable, unless otherwise noted in the body of the report.
The test results provided in this final report were generated by each of the following laboratories within the Pace Network:
• Pace National - Mt. Juliet
This report was revised 2/10/21 to change sample ID MSG-2 to MSG-2A, per client request.
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Kevin Herring
[e-mail]
HORIZON Database Administrator
1(704)875-9092
Enclosures
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 1 of 18
#=CP#
CERTIFICATIONS
Pace Project No.:
Project:
92520159
TOOMEY AVE MULTIFAMILY PROJECT
Pace Analytical Services National
12065 Lebanon Road, Mt. Juliet, TN 37122
Alabama Certification #: 40660
Alaska Certification 17-026
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EPA# TN00003
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Georgia Certification: NELAP
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New Mexico DW Certification
New York Certification #: 11742
North Carolina Aquatic Toxicity Certification #: 41
North Carolina Drinking Water Certification #: 21704
North Carolina Environmental Certificate #: 375
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Ohio VAP Certification #: CL0069
Oklahoma Certification #: 9915
Oregon Certification #: TN200002
Pennsylvania Certification #: 68-02979
Rhode Island Certification #: LAO00356
South Carolina Certification #: 84004
South Dakota Certification
Tennessee DW/Chem/Micro Certification #: 2006
Texas Certification #: T 104704245-17-14
Texas Mold Certification #: LAB0152
USDA Soil Permit #: P330-15-00234
Utah Certification #: TN00003
Virginia Certification #: VT2006
Vermont Dept. of Health: ID# VT-2006
Virginia Certification #: 460132
Washington Certification #: C847
West Virginia Certification #: 233
Wisconsin Certification #: 998093910
Wyoming UST Certification #: via A2LA 2926.01
A2LA-ISO 17025 Certification #: 1461.01
A2LA-ISO 17025 Certification #: 1461.02
AIHA-LAP/LLC EMLAP Certification #:100789
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.
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[phone]
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#=SS#
SAMPLE SUMMARY
Pace Project No.:
Project:
92520159
TOOMEY AVE MULTIFAMILY PROJECT
Lab ID Sample ID Matrix Date Collected Date Received
92520159001 MSG-1A Air 02/02/21 11:35 02/03/21 09:00
92520159002 MVSG-1A Air 02/02/21 11:40 02/03/21 09:00
92520159003 MVSG-2A Air 02/02/21 12:00 02/03/21 09:00
92520159004 MVSG-3A Air 02/02/21 12:15 02/03/21 09:00
92520159005 MVSG-4A Air 02/02/21 12:30 02/03/21 09:00
92520159006 MVSG-5A Air 02/02/21 13:00 02/03/21 09:00
92520159007 MSG-3A Air 02/02/21 13:10 02/03/21 09:00
92520159008 MVSG-7A Air 02/02/21 13:20 02/03/21 09:00
92520159009 MVSG-6A Air 02/02/21 13:30 02/03/21 09:00
92520159010 MSG-2A Air 02/02/21 14:00 02/03/21 09:00
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
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9800 Kincey Ave. Suite 100
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[phone]
Page 3 of 18
#=SA#
SAMPLE ANALYTE COUNT
Pace Project No.:
Project:
92520159
TOOMEY AVE MULTIFAMILY PROJECT
Lab ID Sample ID Method
Analytes
Reported LaboratoryAnalysts
92520159001 MSG-1A ASTM 1946 1 PANDAH
92520159002 MVSG-1A ASTM 1946 1 PANDAH
92520159003 MVSG-2A ASTM 1946 1 PANDAH
92520159004 MVSG-3A ASTM 1946 1 PANDAH
92520159005 MVSG-4A ASTM 1946 1 PANDAH
92520159006 MVSG-5A ASTM 1946 1 PANDAH
92520159007 MSG-3A ASTM 1946 1 PANDAH
92520159008 MVSG-7A ASTM 1946 1 PANDAH
92520159009 MVSG-6A ASTM 1946 1 PANDAH
92520159010 MSG-2A ASTM 1946 1 PANDAH
PAN = Pace National - Mt. Juliet
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 4 of 18
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92520159
TOOMEY AVE MULTIFAMILY PROJECT
Sample:MSG-1A Lab ID:92520159001 Collected:02/02/21 11:35 Received:02/03/21 09:00 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: ASTM 1946 Preparation Method: D1946
Pace National - Mt. Juliet
Organic Compounds (GC) D1946
Methane ND %02/05/21 09:15 74-82-802/05/21 09:150.400 0.0584 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/10/2021 11:55 AM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 5 of 18
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92520159
TOOMEY AVE MULTIFAMILY PROJECT
Sample:MVSG-1A Lab ID:92520159002 Collected:02/02/21 11:40 Received:02/03/21 09:00 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: ASTM 1946 Preparation Method: D1946
Pace National - Mt. Juliet
Organic Compounds (GC) D1946
Methane 0.672 %02/05/21 09:27 74-82-802/05/21 09:270.400 0.0584 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/10/2021 11:55 AM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 6 of 18
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92520159
TOOMEY AVE MULTIFAMILY PROJECT
Sample:MVSG-2A Lab ID:92520159003 Collected:02/02/21 12:00 Received:02/03/21 09:00 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: ASTM 1946 Preparation Method: D1946
Pace National - Mt. Juliet
Organic Compounds (GC) D1946
Methane ND %02/05/21 09:34 74-82-802/05/21 09:340.400 0.0584 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/10/2021 11:55 AM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 7 of 18
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92520159
TOOMEY AVE MULTIFAMILY PROJECT
Sample:MVSG-3A Lab ID:92520159004 Collected:02/02/21 12:15 Received:02/03/21 09:00 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: ASTM 1946 Preparation Method: D1946
Pace National - Mt. Juliet
Organic Compounds (GC) D1946
Methane ND %02/05/21 09:40 74-82-802/05/21 09:400.400 0.0584 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/10/2021 11:55 AM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 8 of 18
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92520159
TOOMEY AVE MULTIFAMILY PROJECT
Sample:MVSG-4A Lab ID:92520159005 Collected:02/02/21 12:30 Received:02/03/21 09:00 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: ASTM 1946 Preparation Method: D1946
Pace National - Mt. Juliet
Organic Compounds (GC) D1946
Methane ND %02/05/21 09:46 74-82-802/05/21 09:460.400 0.0584 1
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 02/10/2021 11:55 AM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 9 of 18
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92520159
TOOMEY AVE MULTIFAMILY PROJECT
Sample:MVSG-5A Lab ID:92520159006 Collected:02/02/21 13:00 Received:02/03/21 09:00 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: ASTM 1946 Preparation Method: D1946
Pace National - Mt. Juliet
Organic Compounds (GC) D1946
Methane ND %02/05/21 09:52 74-82-802/05/21 09:520.400 0.0584 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/10/2021 11:55 AM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 10 of 18
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92520159
TOOMEY AVE MULTIFAMILY PROJECT
Sample:MSG-3A Lab ID:92520159007 Collected:02/02/21 13:10 Received:02/03/21 09:00 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: ASTM 1946 Preparation Method: D1946
Pace National - Mt. Juliet
Organic Compounds (GC) D1946
Methane ND %02/05/21 09:59 74-82-802/05/21 09:590.400 0.0584 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/10/2021 11:55 AM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 11 of 18
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92520159
TOOMEY AVE MULTIFAMILY PROJECT
Sample:MVSG-7A Lab ID:92520159008 Collected:02/02/21 13:20 Received:02/03/21 09:00 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: ASTM 1946 Preparation Method: D1946
Pace National - Mt. Juliet
Organic Compounds (GC) D1946
Methane ND %02/05/21 10:38 74-82-802/05/21 10:380.400 0.0584 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/10/2021 11:55 AM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 12 of 18
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92520159
TOOMEY AVE MULTIFAMILY PROJECT
Sample:MVSG-6A Lab ID:92520159009 Collected:02/02/21 13:30 Received:02/03/21 09:00 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: ASTM 1946 Preparation Method: D1946
Pace National - Mt. Juliet
Organic Compounds (GC) D1946
Methane ND %02/05/21 10:45 74-82-802/05/21 10:450.400 0.0584 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/10/2021 11:55 AM
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9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 13 of 18
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92520159
TOOMEY AVE MULTIFAMILY PROJECT
Sample:MSG-2A Lab ID:92520159010 Collected:02/02/21 14:00 Received:02/03/21 09:00 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: ASTM 1946 Preparation Method: D1946
Pace National - Mt. Juliet
Organic Compounds (GC) D1946
Methane ND %02/05/21 10:51 74-82-802/05/21 10:510.400 0.0584 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/10/2021 11:55 AM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 14 of 18
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92520159
TOOMEY AVE MULTIFAMILY PROJECT
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
1616247
D1946
ASTM 1946
Organic Compounds (GC) D1946
Laboratory:Pace National - Mt. Juliet
Associated Lab Samples:92520159001, 92520159002, 92520159003, 92520159004, 92520159005, 92520159006, 92520159007,
92520159008, 92520159009, 92520159010
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:R3619838-3
Associated Lab Samples:92520159001, 92520159002, 92520159003, 92520159004, 92520159005, 92520159006, 92520159007,
92520159008, 92520159009, 92520159010
Matrix:Air
AnalyzedMDL
Methane %ND 0.400 02/05/21 09:070.0584
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
R3619838-1LABORATORY CONTROL SAMPLE & LCSD:
LCSSpike LCSD
% Rec RPD
Max
RPD
LCSD
Result
R3619838-2
Methane %1.942.00 97.0 70.0-13096.01.92 1.04 20
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/10/2021 11:55 AM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
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[phone]
Page 15 of 18
#=QL#
QUALIFIERS
Pace Project No.:
Project:
92520159
TOOMEY AVE MULTIFAMILY PROJECT
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL - Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean-Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA
Method 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 02/10/2021 11:55 AM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
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[phone]
Page 16 of 18
#=CR#
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Pace Project No.:
Project:
92520159
TOOMEY AVE MULTIFAMILY PROJECT
Lab ID Sample ID QC Batch Method QC Batch Analytical Method
Analytical
Batch
92520159001 1616247 1616247MSG-1A D1946 ASTM 1946
92520159002 1616247 1616247MVSG-1A D1946 ASTM 1946
92520159003 1616247 1616247MVSG-2A D1946 ASTM 1946
92520159004 1616247 1616247MVSG-3A D1946 ASTM 1946
92520159005 1616247 1616247MVSG-4A D1946 ASTM 1946
92520159006 1616247 1616247MVSG-5A D1946 ASTM 1946
92520159007 1616247 1616247MSG-3A D1946 ASTM 1946
92520159008 1616247 1616247MVSG-7A D1946 ASTM 1946
92520159009 1616247 1616247MVSG-6A D1946 ASTM 1946
92520159010 1616247 1616247MSG-2A D1946 ASTM 1946
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 02/10/2021 11:55 AM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
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ANALYTICAL REPORT
Eurofins TestAmerica, Knoxville
5815 Middlebrook Pike
Knoxville, TN 37921
Tel: [phone]
Laboratory Job ID: 140-20064-1
Client Project/Site: 20-283312.2
For:
Partner Engineering and Science, Inc
8720 Red Oak Boulevard
Suite 528
Charlotte, North Carolina 28217
Attn: Michael McKenna
Authorized for release by:
8/24/2020 1:31:44 PM
Mark Swafford, Project Manager II
[phone]
[e-mail]
The test results in this report meet all 2003 NELAC, 2009 TNI, and 2016 TNI requirements for
accredited parameters, exceptions are noted in this report. This report may not be reproduced
except in full, and with written approval from the laboratory. For questions please contact the
Project Manager at the e-mail address or telephone number listed on this page.
This report has been electronically signed and authorized by the signatory. Electronic signature is
intended to be the legally binding equivalent of a traditionally handwritten signature.
Results relate only to the items tested and the sample(s) as received by the laboratory.
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Table of Contents
Client: Partner Engineering and Science, Inc
Project/Site: 20-283312.2
Laboratory Job ID: 140-20064-1
Page 2 of 22
Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Definitions/Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Default Detection Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
QC Association Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Lab Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Clean Canister Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Clean Canister Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Air Canister Dilution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
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Definitions/Glossary
Job ID: 140-20064-1Client: Partner Engineering and Science, Inc
Project/Site: 20-283312.2
Glossary
These commonly used abbreviations may or may not be present in this report.
¤Listed under the "D" column to designate that the result is reported on a dry weight basis
Abbreviation
%R Percent Recovery
CFL Contains Free Liquid
CFU Colony Forming Unit
CNF Contains No Free Liquid
DER Duplicate Error Ratio (normalized absolute difference)
Dil Fac Dilution Factor
DL Detection Limit (DoD/DOE)
DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample
DLC Decision Level Concentration (Radiochemistry)
EDL Estimated Detection Limit (Dioxin)
LOD Limit of Detection (DoD/DOE)
LOQ Limit of Quantitation (DoD/DOE)
MCL EPA recommended "Maximum Contaminant Level"
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MPN Most Probable Number
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
NEG Negative / Absent
POS Positive / Present
PQL Practical Quantitation Limit
PRES Presumptive
QC Quality Control
RER Relative Error Ratio (Radiochemistry)
RL Reporting Limit or Requested Limit (Radiochemistry)
RPD Relative Percent Difference, a measure of the relative difference between two points
TEF Toxicity Equivalent Factor (Dioxin)
TEQ Toxicity Equivalent Quotient (Dioxin)
TNTC Too Numerous To Count
Eurofins TestAmerica, Knoxville
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Case Narrative
Client: Partner Engineering and Science, Inc Job ID: 140-20064-1
Project/Site: 20-283312.2
Job ID: 140-20064-1
Laboratory: Eurofins TestAmerica, Knoxville
Narrative
Job Narrative
140-20064-1
Comments
No additional comments.
Receipt
The samples were received on 8/19/2020 10:15 AM.
Air - GC VOA
No analytical or quality issues were noted, other than those described in the Definitions/Glossary page.
Eurofins TestAmerica, KnoxvillePage 4 of 22
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Sample Summary
Job ID: 140-20064-1Client: Partner Engineering and Science, Inc
Project/Site: 20-283312.2
Lab Sample ID Client Sample ID ReceivedCollectedMatrix Asset ID
140-20064-1 SG 1 Air 08/18/20 10:08 08/19/20 10:15 Air Canister (1-Liter) #11569
140-20064-2 SG 2 Air 08/18/20 10:18 08/19/20 10:15 Air Canister (1-Liter) #34000903
140-20064-3 SG 3 Air 08/18/20 10:40 08/19/20 10:15 Air Canister (1-Liter) #34002399
Eurofins TestAmerica, Knoxville
Page 5 of 22
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Detection Summary
Job ID: 140-20064-1Client: Partner Engineering and Science, Inc
Project/Site: 20-283312.2
Client Sample ID: SG 1 Lab Sample ID: 140-20064-1
No Detections.
Client Sample ID: SG 2 Lab Sample ID: 140-20064-2
No Detections.
Client Sample ID: SG 3 Lab Sample ID: 140-20064-3
No Detections.
Eurofins TestAmerica, Knoxville
This Detection Summary does not include radiochemical test results.
Page 6 of 22
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Client Sample Results
Job ID: 140-20064-1Client: Partner Engineering and Science, Inc
Project/Site: 20-283312.2
Lab Sample ID: 140-20064-1Client Sample ID: SG 1
Matrix: AirDate Collected: 08/18/20 10:08
Date Received: 08/19/20 10:15
Sample Container: Summa Canister 1L
Method: D1946 - Fixed Gases in Air (GC)
RL MDL
Methane <0.11 0.12 0.11 % v/v 08/21/20 11:46 1.21
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
Lab Sample ID: 140-20064-2Client Sample ID: SG 2
Matrix: AirDate Collected: 08/18/20 10:18
Date Received: 08/19/20 10:15
Sample Container: Summa Canister 1L
Method: D1946 - Fixed Gases in Air (GC)
RL MDL
Methane <0.12 0.12 0.12 % v/v 08/21/20 12:08 1.23
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
Lab Sample ID: 140-20064-3Client Sample ID: SG 3
Matrix: AirDate Collected: 08/18/20 10:40
Date Received: 08/19/20 10:15
Sample Container: Summa Canister 1L
Method: D1946 - Fixed Gases in Air (GC)
RL MDL
Methane <0.12 0.12 0.12 % v/v 08/21/20 12:30 1.24
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
Eurofins TestAmerica, Knoxville
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Default Detection Limits
Client: Partner Engineering and Science, Inc Job ID: 140-20064-1
Project/Site: 20-283312.2
Method: D1946 - Fixed Gases in Air (GC)
0.10Methane % v/v
Analyte UnitsMDLRL
0.094
Eurofins TestAmerica, Knoxville
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QC Sample Results
Job ID: 140-20064-1Client: Partner Engineering and Science, Inc
Project/Site: 20-283312.2
Method: D1946 - Fixed Gases in Air (GC)
Client Sample ID: Method BlankLab Sample ID: MB 140-42012/2
Matrix: Air Prep Type: Total/NA
Analysis Batch: 42012
RL MDL
Methane <0.094 0.10 0.094 % v/v 08/21/20 10:59 1
MB MB
Analyte Dil FacAnalyzedPreparedDUnitResultQualifier
Client Sample ID: Lab Control SampleLab Sample ID: LCS 140-42012/1001
Matrix: Air Prep Type: Total/NA
Analysis Batch: 42012
Methane 4.00 4.32 % v/v 108 85-115
Analyte
LCS LCS
DUnitResultQualifier %Rec
Spike
Added
%Rec.
Limits
Eurofins TestAmerica, Knoxville
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QC Association Summary
Job ID: 140-20064-1Client: Partner Engineering and Science, Inc
Project/Site: 20-283312.2
Air - GC VOA
Analysis Batch: 42012
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch
Air D1946140-20064-1 SG 1 Total/NA
Air D1946140-20064-2 SG 2 Total/NA
Air D1946140-20064-3 SG 3 Total/NA
Air D1946MB 140-42012/2 Method Blank Total/NA
Air D1946LCS 140-42012/1001 Lab Control Sample Total/NA
Eurofins TestAmerica, Knoxville
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Lab Chronicle
Client: Partner Engineering and Science, Inc Job ID: 140-20064-1
Project/Site: 20-283312.2
Client Sample ID: SG 1 Lab Sample ID: 140-20064-1
Matrix: AirDate Collected: 08/18/20 10:08
Date Received: 08/19/20 10:15
Analysis D1946 BKK08/21/20 11:461.21 TAL KNX42012
Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
Total/NA 500 uL 500 uL
Instrument ID:GR
Client Sample ID: SG 2 Lab Sample ID: 140-20064-2
Matrix: AirDate Collected: 08/18/20 10:18
Date Received: 08/19/20 10:15
Analysis D1946 BKK08/21/20 12:081.23 TAL KNX42012
Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
Total/NA 500 uL 500 uL
Instrument ID:GR
Client Sample ID: SG 3 Lab Sample ID: 140-20064-3
Matrix: AirDate Collected: 08/18/20 10:40
Date Received: 08/19/20 10:15
Analysis D1946 BKK08/21/20 12:301.24 TAL KNX42012
Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
Total/NA 500 uL 500 uL
Instrument ID:GR
Client Sample ID: Method Blank Lab Sample ID: MB 140-42012/2
Matrix: AirDate Collected: N/A
Date Received: N/A
Analysis D1946 BKK08/21/20 10:591 TAL KNX42012
Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
Total/NA 500 uL 500 uL
Instrument ID:GR
Client Sample ID: Lab Control Sample Lab Sample ID: LCS 140-42012/1001
Matrix: AirDate Collected: N/A
Date Received: N/A
Analysis D1946 BKK08/21/20 10:351 TAL KNX42012
Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
Total/NA 500 uL 500 uL
Instrument ID:GR
Laboratory References:
TAL KNX = Eurofins TestAmerica, Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL [phone]
Eurofins TestAmerica, Knoxville
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Accreditation/Certification Summary
Client: Partner Engineering and Science, Inc Job ID: 140-20064-1
Project/Site: 20-283312.2
Laboratory: Eurofins TestAmerica, Knoxville
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.
Authority Program Identification Number Expiration Date
N/AAFCEE
ANAB Dept. of Defense ELAP L2311 02-13-22
ANAB Dept. of Energy L2311.01 02-13-22
ANAB ISO/IEC 17025 L2311 02-13-22
ANAB ISO/IEC 17025 L2311 02-14-22
Arkansas DEQ State 88-0688 06-17-21
California State 2423 06-30-21
Colorado State TN00009 02-28-21
Connecticut State PH-0223 09-30-21
Florida NELAP E87177 07-01-21
Georgia (DW)State 906 12-11-22
Hawaii State NA 12-11-21
Kansas NELAP E-10349 11-01-20
Kentucky (DW)State 90101 01-01-21
Louisiana NELAP LA110001 12-31-12 *
Louisiana NELAP 83979 06-30-21
Louisiana (DW)State LA019 12-31-20
Maryland State 277 03-31-21
Michigan State 9933 12-11-22
Nevada State TN00009 07-31-21
New Hampshire NELAP 299919 01-17-21
New Jersey NELAP TN001 07-01-21
New York NELAP 10781 03-31-21
North Carolina (DW)State 21705 07-31-21
North Carolina (WW/SW)State 64 12-31-20
Ohio VAP State CL0059 06-02-23
Oklahoma State 9415 08-31-20
Oregon NELAP TNI0189 01-02-21
Pennsylvania NELAP 68-00576 12-31-20
Tennessee State 02014 12-11-22
Texas NELAP T104704380-18-12 08-31-20
US Fish & Wildlife US Federal Programs 058448 07-31-21
USDA US Federal Programs P330-19-00236 08-20-22
Utah NELAP TN00009 07-31-21
Virginia NELAP 460176 09-15-20
Washington State C593 01-19-21
West Virginia (DW)State 9955C 01-01-21
West Virginia DEP State 345 05-01-21
Wisconsin State 998044300 08-31-21
Eurofins TestAmerica, Knoxville
* Accreditation/Certification renewal pending - accreditation/certification considered valid.
Page 12 of 22
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Method Summary
Job ID: 140-20064-1Client: Partner Engineering and Science, Inc
Project/Site: 20-283312.2
Method Method Description LaboratoryProtocol
ASTMD1946Fixed Gases in Air (GC)TAL KNX
Protocol References:
ASTM = ASTM International
Laboratory References:
TAL KNX = Eurofins TestAmerica, Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL [phone]
Eurofins TestAmerica, Knoxville
Page 13 of 22
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1:EurofinsTestAmerica,Knoxville5815MiddlebrookPikeKnoxville,TN37921Phone:[phone]Fax:865-584^1315%•*eurofinsChainofCustodyRecordEnvironmentTestingAmericaSampler.LabPM:Swafford,MarkHCarrierTrackingNo(s):COCNo:400-95858-34712.1ClientInformationClientContact:MichaelMcKennaPhone:E-Mail:[e-mail]:Page1of1Company.PartnerEngineeringandScience,IncJob#:AnalysisRequestedT.A,,Address:DueDateRequested:TATRequested(days):fyofrf|ZosffIPreservationCodes:8720RedOakBoulevardSuite528|a-hclIB-NaOH?£C-ZnAcetateD-NitricAcidIE-NaHS04F-MeOHG-AmchlorH-AscorbicAcidI-icei-DiWaterK-EDTA-EDAM-HexaneN-NoneO-AsNa02P-Na204SQ-Na2S03R-Na2S203S-H2S04T-TSPDodecahydrateU-AcetoneV-MCAAW-pH4-5Z-ether(specify)CityCharlotteState,Zip:NC,28217PO#:PurchaseOrdernotrequiredPhone:140-20064ChainofCustody3-Email:[e-mail]#:2;Project#:40009000,oProjectName:IL20-283312.2litSite:SSOW#:oOther:II1aMatrix|BIIS0=waste/oil,BT=Tissue,A=Air)LL|Q^QASampleType(C=Comp,G=grab)3SampleTimeaoSampleIdentificationSampleDateSpecialInstructions/Note:"O4/HA*fecfoLn05CQCDaAir4^/rtGAirO/!r>oAirr>o^cce-i/ejl@FrdrXf-h-KteInarQW-miXIJ1M/2Cf=L-feof/—iQQ,7ccj^cjMl//PossibleHazardIdentificationSampleDisposal(Afeema/\DisposalByLabeassessedifsamplesareretainedlongerthan1month)ArchiveFornNon-HazardFlammableSkinIrritantPoisonBUnknownRadiologicalReturnToClientMonthsSpecialInstructions/QCRequirements:DeliverableRequested:I,II,III,IV,Other(specify)MethodofShipmentEmptyKitRelinquishedby:Date:Time:iHi®1'CompanyReceivedby:Date/Time--m/goionCompany£24CompanyZs>Date/TiDate/Time:Relinquishedbyme:Date/Time:CompanyDate/Time:CompanyRelinquishedby:Receivedby:Coolerfemperature(s)°CandOtherRemarks:CustodySeaISIritact:CustodySealNo.:AYesANo Ver:01/16/2019HooC140-20064
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17MiLoc:14020064EUROFINS/TESTAMERICAKNOXVILLESAMPLERECEIPT/CONDITIONUPONRECEIPTANOMALYCHECKLISTLogInNumber:ReviewItemsIfNo,whatwastheproblem?Comments/ActionsTakenYesNoNA1.Aretheshippingcontainersintact?Containers,BrokenAIZfCheckedinlab2.Wereambientaircontainersreceivedintact?3.Thecoolers/containerscustodysealifpresent,isitintact?YesNA4.Isthecoolertemperaturewithinlimits?(>freezingCoolerOutofTemp,ClientContacted,Proceed/CancelCoolerOutofTemp,SameDayReceipt temp,ofwaterto6°C,VOST:10°C)ThermometerID:/Correctionfactor:T5.Wereallofthesamplecontainersreceivedintact?Containers,Broken6.Weresamplesreceivedinappropriatecontainers?Containers,Improper;ClientContacted;Proceed/Cancel7.DosamplecontainerlabelsmatchCOC?(IDs,Dates,Times)COC&SamplesDoNotMatchCOCIncorrect/IncompleteCOCNotReceived8.WereallofthesampleslistedontheCOCreceived?SampleReceived,NotonCOCSampleonCOC,NotReceived"0a>cn9.Isthedate/timeofsamplecollectionnoted?COC;NoDate/Time;ClientContacted 05LabelingVerifiedby:Date:oi10.WasthesampleridentifiedontheCOC?oSamplerNotListedonCOCZl\511.Istheclientandprojectname/#identified?COCIncorrect/IncompletepHteststriplotnumber:l\5z12.Aretests/parameterslistedforeachsample?COCNotestsonCOC13.Isthematrixofthesamplesnoted?ACOCIncorrect/IncompleteBox16A:pHBox18A:Residual14.WasCOCrelinquished?(Signed/Dated/Timed)COCIncorrect/IncompleteChlorinePreservationPreservative:LotNumber:ExpDate: Analyst: Date: Time: 15.Weresamplesreceivedwithinholdingtime?HoldingTime-Receipt16.Weresamplesreceivedwithcorrectchemicalpreservative(excludingEncore)?pHAdjusted,pHIncluded(Seebox16A)IncorrectPreservative/Headspace(VOAonly)17.WereVOAsamplesreceivedwithoutheadspace?18.Didyoucheckforresidualchlorine,ifnecessary?ResidualChlorine(e.g.1613B,1668)/Chlorineteststriplotnumber:z19.For1613BwatersamplesispH<9?Ifno,notifylabtoadjustz20,Forradsampleswassampleactivityinfo.Provided?Project#:QQQ*jProjectmissinginfoPMInstructions:QQO,Z,'uMMoQA026R32.doc,062719SampleReceivingAssociate:Date:900
Gauge ID:G5
Date:8/20/2020
Analyst Sample ID Asset #
Cleaning
Job Cert
Size
(L)
Pressure @
Receipt
(-in Hg or +psig) Time Comments
BRS 140-20064-a-1 11569 19886 B 1 -1.9 8:57 1.9
BRS 140-20064-a-2 34000903 19886 B 1 -2.2 8:58 2.0
BRS 140-20064-a-3 34002399 19886 B 1 -1.5 8:59 2.6
□ Air - Can P -24 to -25 " - Flow Contr. Faulty (NCM#_________)
□ Air - Can P Out -26" - Flow Contr. Works (NCM#___________)
TestAmerica Knoxville - Air Canister Initial Pressure Check
□ Air - Can P Out -26" - Flow Contr. Faulty (NCM#___________)
□ Air - Can P Low -24 to -25 " - Grab Sample (NCM#__________)
□ Air - Can P Low -26 "- Grab Sample (NCM#____________)
□ Receiving –Air Can –Calve Open (NCM #__________)
□ Air - Can P -24 to -25 " - Flow Contr. Works (NCM#_________)
140-20064IP MS038 r14, 6/19/15
Page 16 of 22
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FORM I
AIR - GC/MS VOA ORGANICS ANALYSIS DATA SHEET
Client Sample ID:
Lab Name:Job No.:
34002396
SDG No.:
140-19886-1
Lab Sample ID:140-19886-3
Eurofins TestAmerica, Knoxville
Matrix:GH02LOT3.DLab File ID:
Date Collected:TO-15Analysis Method:
Air
07/31/2020 16:25
Sample wt/vol:
% Moisture:
GC Column:Soil Extract Vol.:
Dilution Factor:Soil Aliquot Vol:1
Level: (low/med)Low
200(mL)
0.32(mm)
Date Analyzed:08/03/2020 04:37
ID:RTX-5
Analysis Batch No.:41465 ppb v/vUnits:
CAS NO.COMPOUND NAME RESULT Q RL
0.2071-55-6 1,1,1-Trichloroethane ND
0.2079-34-5 1,1,2,2-Tetrachloroethane ND
0.2079-00-5 1,1,2-Trichloroethane ND
0.2076-13-1 1,1,2-Trichlorotrifluoroethane ND
0.2075-34-3 1,1-Dichloroethane ND
0.2075-35-4 1,1-Dichloroethene ND
1.087-61-6 1,2,3-Trichlorobenzene ND
0.5096-18-4 1,2,3-Trichloropropane ND
0.20526-73-8 1,2,3-Trimethylbenzene ND
0.2095-93-2 1,2,4,5-Tetramethylbenzene ND
1.0120-82-1 1,2,4-Trichlorobenzene ND
0.2095-63-6 1,2,4-Trimethylbenzene ND
0.4096-12-8 1,2-Dibromo-3-Chloropropane ND
0.20106-93-4 1,2-Dibromoethane ND
0.4095-50-1 1,2-Dichlorobenzene ND
0.20107-06-2 1,2-Dichloroethane ND
0.2078-87-5 1,2-Dichloropropane ND
0.2076-14-2 1,2-Dichlorotetrafluoroethane ND
0.20108-67-8 1,3,5-Trimethylbenzene ND
0.40106-99-0 1,3-Butadiene ND
0.20541-73-1 1,3-Dichlorobenzene ND
0.20106-46-7 1,4-Dichlorobenzene ND
0.40123-91-1 1,4-Dioxane ND
2.071-36-3 1-Butanol ND
2.590-12-0 1-Methylnaphthalene ND
0.40540-84-1 2,2,4-Trimethylpentane ND
0.20565-59-3 2,3-Dimethylpentane ND
1.078-93-3 2-Butanone ND
0.4095-49-8 2-Chlorotoluene ND
0.40591-78-6 2-Hexanone ND
0.5078-78-4 2-Methylbutane ND
2.591-57-6 2-Methylnaphthalene ND
0.20107-83-5 2-Methylpentane ND
0.20107-05-1 3-Chloropropene ND
0.40622-96-8 4-Ethyltoluene ND
1.0108-10-1 4-Methyl-2-pentanone (MIBK)ND
FORM I TO-15
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FORM I
AIR - GC/MS VOA ORGANICS ANALYSIS DATA SHEET
Client Sample ID:
Lab Name:Job No.:
34002396
SDG No.:
140-19886-1
Lab Sample ID:140-19886-3
Eurofins TestAmerica, Knoxville
Matrix:GH02LOT3.DLab File ID:
Date Collected:TO-15Analysis Method:
Air
07/31/2020 16:25
Sample wt/vol:
% Moisture:
GC Column:Soil Extract Vol.:
Dilution Factor:Soil Aliquot Vol:1
Level: (low/med)Low
200(mL)
0.32(mm)
Date Analyzed:08/03/2020 04:37
ID:RTX-5
Analysis Batch No.:41465 ppb v/vUnits:
CAS NO.COMPOUND NAME RESULT Q RL
7.567-64-1 Acetone ND
1.075-05-8 Acetonitrile ND
1.0*107-02-8 Acrolein ND
2.0107-13-1 Acrylonitrile ND
0.4098-83-9 Alpha Methyl Styrene ND
0.2071-43-2 Benzene ND
0.40100-44-7 Benzyl chloride ND
0.2075-27-4 Bromodichloromethane ND
0.2075-25-2 Bromoform ND
0.2074-83-9 Bromomethane ND
1.0106-97-8 Butane ND
0.4075-15-0 Carbon disulfide ND
0.2056-23-5 Carbon tetrachloride ND
0.20108-90-7 Chlorobenzene ND
0.2075-45-6 Chlorodifluoromethane ND
0.2075-00-3 Chloroethane ND
0.2067-66-3 Chloroform ND
1.074-87-3 Chloromethane ND
0.20156-59-2 cis-1,2-Dichloroethene ND
0.4010061-01-5 cis-1,3-Dichloropropene ND
0.4098-82-8 Cumene ND
0.40110-82-7 Cyclohexane ND
0.20124-48-1 Dibromochloromethane ND
0.4074-95-3 Dibromomethane ND
0.2075-71-8 Dichlorodifluoromethane ND
5.0*64-17-5 Ethanol ND
2.0141-78-6 Ethyl acetate ND
2.0*60-29-7 Ethyl ether ND
0.20100-41-4 Ethylbenzene ND
1.087-68-3 Hexachlorobutadiene ND
0.40110-54-3 Hexane ND
0.20496-11-7 Indane ND
0.4095-13-6 Indene ND
1.267-63-0 Isopropyl alcohol ND
0.20179601-23-1 m&p-Xylene ND
0.4080-62-6 Methyl methacrylate ND
FORM I TO-15
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FORM I
AIR - GC/MS VOA ORGANICS ANALYSIS DATA SHEET
Client Sample ID:
Lab Name:Job No.:
34002396
SDG No.:
140-19886-1
Lab Sample ID:140-19886-3
Eurofins TestAmerica, Knoxville
Matrix:GH02LOT3.DLab File ID:
Date Collected:TO-15Analysis Method:
Air
07/31/2020 16:25
Sample wt/vol:
% Moisture:
GC Column:Soil Extract Vol.:
Dilution Factor:Soil Aliquot Vol:1
Level: (low/med)Low
200(mL)
0.32(mm)
Date Analyzed:08/03/2020 04:37
ID:RTX-5
Analysis Batch No.:41465 ppb v/vUnits:
CAS NO.COMPOUND NAME RESULT Q RL
1.01634-04-4 Methyl tert-butyl ether ND
0.20108-87-2 Methylcyclohexane ND
1.075-09-2 Methylene Chloride ND
0.4091-20-3 Naphthalene ND
0.40104-51-8 n-Butylbenzene ND
1.0124-18-5 n-Decane ND
1.0112-40-3 n-Dodecane ND
0.40142-82-5 n-Heptane ND
0.40111-84-2 n-Nonane ND
0.40111-65-9 n-Octane ND
0.40103-65-1 N-Propylbenzene ND
1.01120-21-4 n-Undecane ND
0.2095-47-6 o-Xylene ND
0.2099-87-6 p-Cymene ND
2.5109-66-0 Pentane ND
2.5115-07-1 Propene ND
0.40135-98-8 sec-Butylbenzene ND
0.20100-42-5 Styrene ND
1.075-65-0 tert-Butanol ND
0.4098-06-6 tert-Butylbenzene ND
0.20127-18-4 Tetrachloroethene ND
1.0109-99-9 Tetrahydrofuran ND
0.20110-02-1 Thiophene ND
1.0108-88-3 Toluene ND
0.20156-60-5 trans-1,2-Dichloroethene ND
0.2010061-02-6 trans-1,3-Dichloropropene ND
0.2079-01-6 Trichloroethene ND
0.2075-69-4 Trichlorofluoromethane ND
1.0108-05-4 Vinyl acetate ND
0.20593-60-2 Vinyl bromide ND
0.4075-01-4 Vinyl chloride ND
FORM I TO-15
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Report Date: 03-Aug-2020 18:10:01 Chrom Revision: 2.3 30-Jun-2020 12:05:54
Eurofins TestAmerica, Knoxville
Target Compound Quantitation Report
Data File:\\chromfs\Knoxville\ChromData\MG\20200731-16181.b\GH02LOT3.D
Lims ID:140-19886-A-3
Client ID:34002396
Sample Type:Client
Inject. Date:03-Aug-2020 04:37:30 ALS Bottle#:1 Worklist Smp#:23
Purge Vol:500.000 mL Dil. Factor:1.0000
Sample Info:140-0016181-023
Misc. Info.:34002396
Operator ID:HMT Instrument ID:MG
Method:\\chromfs\Knoxville\ChromData\MG\20200731-16181.b\MG_TO15.m
Limit Group:MSA TO14A_15 Routine ICAL
Last Update:03-Aug-2020 18:09:21 Calib Date:15-Jul-2020 22:02:30
Integrator:RTE ID Type: Deconvolution ID
Quant Method:Internal Standard Quant By:Initial Calibration
Last ICal File:\\chromfs\Knoxville\ChromData\MG\20200715-16031.b\GG15IC07.D
Column 1 :RTX-5 ( 0.32 mm)Det: MS SCAN
Process Host:CTX1028
First Level Reviewer: khachitpongpanits Date:03-Aug-2020 18:10:01
Compound Sig
RT
(min.)
Adj RT
(min.)
Dlt RT
(min.)Q Response
OnCol Amt
ppb v/v Flags
* 1 Chlorobromomethane (IS) 128 8.833 8.833 0.000 91 126199 4.00
* 2 1,4-Difluorobenzene 114 11.017 11.017 0.000 97 1198032 4.00
* 3 Chlorobenzene-d5 (IS) 117 15.746 15.746 0.000 96 1021773 4.00
$ 4 4-Bromofluorobenzene (Surr) 95 17.385 17.391 -0.006 72 798118 3.84
7 Propene 41 3.721 3.721 0.000 99 77374 -0.0370 7
30 2-Methyl-2-propanol 59 6.261 6.093 0.167 39 1811 0.0178
31 Methylene Chloride 84 6.299 6.293 0.006 98 58422 0.1700
47 1,1,1-Trichloroethane 97 9.874 9.867 0.000 93 3090 0.0171
QC Flag Legend
Processing Flags
7 - Failed Limit of Detection
Reagents:
40MXISSURP_00004 Amount Added: 40.00 Units: mL Run Reagent
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Report Date: 03-Aug-2020 18:10:01 Chrom Revision: 2.3 30-Jun-2020 12:05:54
Eurofins TestAmerica, Knoxville
Data File:\\chromfs\Knoxville\ChromData\MG\20200731-16181.b\GH02LOT3.D
Injection Date:03-Aug-2020 04:37:30 Instrument ID:MG Operator ID:HMT
Lims ID:140-19886-A-3 Lab Sample ID:140-19886-3 Worklist Smp#:23
Client ID:34002396
Purge Vol:500.000 mL Dil. Factor:1.0000 ALS Bottle#:1
Method:MG_TO15 Limit Group:MSA TO14A_15 Routine ICAL
Column: RTX-5 ( 0.32 mm)
3.0 5.0 7.0 9.0 11.0 13.0 15.0 17.0 19.0 21.0 23.0 25.0 27.0
Min
0
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Y ( X100000)GH02LOT3[MS SCAN Chro]:Total
* Chlorobromomethane (IS)( 8.833)* 1,4-Difluorobenzene( 11.017)+* Chlorobenzene-d5 (IS)( 15.746)+$ 4-Bromofluorobenzene (Surr)( 17.385)+Page 21 of 22
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Summa Canister Dilution Worksheet
Job No.: 140-20064-1Client: Partner Engineering and Science, Inc
Project/Site: 20-283312.2
Canister Preadjusted
Lab Sample ID (L)("Hg)(atm)(L)(psig)(atm)(L)Factor Factor Date Analyst Initals
Volume Pressure
Preadjusted Adjusted
Pressure
Preadjusted
Volume Pressure
Adjusted
Pressure
Adjusted
Volume Dilution
Final
Dilution
Initial
Volume
(mL)
140-20064-1 1 0.94 0.94-1.9 08/20/20 9:001.211.211.131.9 1.13
ID
Pressure
Gauge
G5 BRS
140-20064-2 1 0.93 0.93-2.2 08/20/20 9:011.231.231.142.0 1.14 G5 BRS
140-20064-3 1 0.95 0.95-1.5 08/20/20 9:011.241.241.182.6 1.18 G5 BRS
Formulae:
Preadjusted Volume (L)= ( Preadjusted Pressure ("Hg) + 29.92 "Hg * Vol L ) / 29.92 "Hg
Adjusted Volume (L) = ( Adjusted Pressure (psig) + 14.7 psig * Vol L ) / 14.7 psig
Dilution Factor = Adjusted Volume (L) / Preadjusted Volume (L)
Where:
29.92 "Hg = Standard atmospheric pressure in inches of Mercury (“Hg)
14.7 psig = Standard atmospheric pressure in pounds per square inch gauge (psig)
Eurofins TestAmerica, Knoxville
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APPENDIX B – LOS ANGELES DEPARTMENT OF BUILDING SAFETY
SITE TESTING STANDARDS FOR METHANE
DOCUMENT NO.:
I hereby certify that I have tested the above site