08039_Conbraco_EMP Rev 2 20240119

1
EMP Version 3, March 2023
NORTH CAROLINA BROWNFIELDS REDEVELOPMENT SECTION
ENVIRONMENTAL MANAGEMENT PLAN

This form is to be used to prepare an Environmental Management Plan (EMP) for projects in
the North Carolina Brownfields Redevelopment Section at the direction of a Brownfields
project manager.

The EMP is a standard requirement of a Brownfields Agreement (BFA). Its purpose is to clarify
actions to be taken during demolition and construction at Brownfields properties in an effort
to avoid delays in the event of the discovery of new contamination sources or other
environmental conditions. The EMP provides a means to document redevelopment plans and
environmental data for each applicable environmental medium to inform regulatory-compliant
decision-making at the site. As much detail as possible should be included in the EMP,
including contingency planning for unknowns. Consult your project manager if you have
questions.

Prospective Developers and/or their consultants must complete and submit this form and all
pertinent attachments, see checklist below, to their Brownfields project manager prior to any
earthmoving or other development-related activities that have the potential to disturb soil at
the Brownfields Property, including demolition. For the EMP to be valid for use, it must be
completed, reviewed by the Section, signed by all parties working on the project, and
approved by the Brownfields project manager. Failure to comply with the requirements of the
EMP could jeopardize project eligibility, or in the event of a recorded agreement, be cause for
a reopener.

The EMP is valid only for the scope of work described herein and must be updated to be
applicable for new phases of redevelopment or after significant changes in applicable
regulatory guidance. Risk characterization of a Brownfields Property to DEQ’s written
satisfaction is required prior to EMP approval.

Voluntary Metrics Tab
The NC Brownfields Redevelopment Section updates estimated capital investment (from the Brownfields Property Application) and estimated jobs created (from the Brownfields Agreement) whenever possible. As a voluntary measure, you may opt to complete the below information for capital investment and jobs created as estimated by your final redevelopment
plans for the Brownfields Property:

1. Estimated capital investment in redevelopment project: 38,000,000
2. Estimated jobs created:
a. Construction Jobs: 330 jobs
b. Full Time Post-Redevelopment Jobs: 120 jobs

2
EMP Version 3, March 2023
Table of Contents
NORTH CAROLINA BROWNFIELDS REDEVELOPMENT SECTION .................................................................. 1
ENVIRONMENTAL MANAGEMENT PLAN .................................................................................................... 1
GENERAL INFORMATION ........................................................................................................................ 4
COMMUNICATIONS ................................................................................................................................ 4
NOTIFICATIONS TO THE BROWNFIELDS REDEVELOPMENT SECTION ..................................................... 5
REDEVELOPMENT PLANS ........................................................................................................................ 5
CONTAMINATED MEDIA ......................................................................................................................... 7
PART 1. SOIL ........................................................................................................................................ 8
PART 2. GROUNDWATER .................................................................................................................. 17
PART 3. SURFACE WATER .................................................................................................................. 19
PART 4. SEDIMENT ............................................................................................................................ 19
PART 5. SOIL VAPOR ......................................................................................................................... 20
PART 6. INDOOR AIR ......................................................................................................................... 21
VAPOR INTRUSION MITIGATION SYSTEM ............................................................................................. 21
CONTINGENCY PLAN ............................................................................................................................. 22
POST-REDEVELOPMENT REPORTING ..................................................................................................... 24
APPROVAL SIGNATURES ....................................................................................................................... 25

3
EMP Version 3, March 2023
So that the EMP provides value in protecting Brownfields eligibility and public health, the
preparer shall ensure that the following steps have been completed prior to submitting the
EMP for review. Any EMP prepared without completing all of the following is premature and may
be returned without comment.

☒ Site sampling and assessment that meets Brownfields’ objectives is complete and has
been reviewed and approved by the Brownfields project manager.
☒ Specific redevelopment plans, even if conceptual, have been developed for the project,
submitted and reviewed by the Brownfields project manager.

Please submit, along with the completed EMP form, the following attachments, as relevant
and applicable to the proposed redevelopment:

☒ A set of redevelopment plans, including architectural/engineering plans, if available; if
not, conceptual plans may suffice if updated when detailed plans are drafted.

☒ A figure overlaying redevelopment plans on a map of the extent of contamination for
each media.

☒ Site grading plans that include a cut and fill analysis.

☒ A figure showing the proposed location and depth of impacted soil that would remain
onsite after construction grading.

☐ Any necessary permits for redevelopment (i.e., demolition, etc.).

☐ A detailed construction schedule that includes timing and phases of construction.

☒ Tabulated data summaries for each impacted media (i.e., soil, groundwater, soil gas,
etc.) applicable to the proposed redevelopment.

☒ Figures with the sampling locations and contamination extents for each impacted media
applicable to the proposed redevelopment.

☐ A full final grade sampling and analysis plan, if the redevelopment plan is final.

☐ If known, information about each proposed potential borrow soil source, such as aerial
photos, historic site maps, historic Sanborn maps, a site history, necessary for
Brownfields approval.

☐ Information and, analytical data if required, for quarries, or other borrow sources,
detailing the type of material proposed for import to the Brownfields Property.

4
EMP Version 3, March 2023

☐ A work plan for the sampling and analysis of soil to be brought onto the Brownfields
Property. Refer to Issue Resolution 15 in Brownfields Redevelopment Section
Guidelines.

☐ A map of the Brownfields Property showing the location of soils proposed for export
and sampling data from those areas.

☒ If a Vapor Intrusion Mitigation System (VIMS) is required by the Brownfields
Redevelopment Section, the VIMS plan will be signed and sealed by a NC Professional
Engineer. The VIMS Plan may also be submitted under separate cover.

GENERAL INFORMATION

Date: 10/17/2023 Revision Date (if applicable): 1/19/2024

Brownfields Assigned Project Name: Former Conbraco Facility (Northern Parcel)

Brownfields Project Number: 08039-04-60

Brownfields Property Address: 1640 Matthews Township Parkway (Actual Brownfields Site Address is
listed as 701 Matthews-Mint Hill Parkway), Matthews, Mecklenburg County, North Carolina

Brownfields Property Area (acres): 6.414
Is Brownfields Property Subject to RCRA Permit?.......................☐ Yes ☒ No
If yes enter Permit No.: Click or tap here to enter text.
Is Brownfields Property Subject to a Solid Waste Permit….……..☐ Yes ☒ No
If yes, enter Permit No.: Click or tap here to enter text.

COMMUNICATIONS

A copy of this EMP shall be distributed to all the parties below as well as any contractors or site workers
that may be exposed to site vapors, soil, groundwater, and/or surface water. Additionally, a copy of the
EMP shall be maintained at the Brownfields Property during redevelopment activities in an area that is
prominently accessible to site workers. NOTE, THE EMP DOES NOT TAKE THE PLACE OF A SITE-SPECIFIC
HEALTH AND SAFETY PLAN.
Property Owner: 1640 Matthews Township Parkway, LLC
Contact Person: Mr. Caldwell Rose @ NAI Southern Real Estate
Phone Numbers: Office: 704.632.7622 Mobile: [phone]
Email: [e-mail]

5
EMP Version 3, March 2023

Contractor for Property Owner: Currently Being Selected. Addendum will be filed upon
finalization.]
Contact Person: Click or tap here to enter text.
Phone Numbers: Office: Click or tap here to enter text. Mobile: Click or tap here to enter text.
Email: Click or tap here to enter text.

Environmental Consultant: ECS Southeast, LLP
Contact Person: Roger A. Smith, P.G.
Phone Numbers: Office: 704.378.9015 Mobile: [phone]
Email: [e-mail]

Brownfields Redevelopment Section Project Manager: Carolyn Minnich
Phone Numbers: Office: 704.661.0330 Mobile: Click or tap here to enter text.
Email: [e-mail]

Other DEQ Program Contacts (if applicable, i.e., UST Section, Inactive Hazardous Site Branch,
Hazardous Waste, Solid Waste):
Eric B. Aufderhaar, Division of Waste Management (919)-707-8221, [e-mail]

NOTIFICATIONS TO THE BROWNFIELDS REDEVELOPMENT SECTION

Written advance Notification Times to Brownfields project manager: Check each box to accept
minimum advance notice periods (in calendar days) for each type of onsite task:

On-site assessment or remedial activities:……………………………………….…… 10 days Prior ☒

Construction or grading start:……………………………………….………………………. 10 days Prior ☒

Discovery of stained soil, odors, USTs, buried drums or waste, landfill, or other signs of previously
unknown contamination: ……………………………….……………………………………. Within 48 hours ☒

Implementation of emergency actions (e.g. dewatering, flood or soil erosion control measures in
area of contamination, ventilation of work zones):…………….……….……… Within 48 hours ☒

Installation of mitigation systems:………………………….………………….……….. 10 days Prior ☒

Other notifications as required by local, state or federal agencies to implement redevelopment
activities: (as applicable): ……………………….…………………………………………..… Within 30 days ☒

REDEVELOPMENT PLANS

6
EMP Version 3, March 2023
1) Type of Redevelopment (check all that apply):
☐Residential ☐Townhomes (Prior written DEQ approval REQUIRED regardless of ownership
structure) ☐Recreational ☐Institutional ☒Commercial ☒Office ☒Retail ☐Industrial
☐Other specify:
Current redevelopment plans for the site include an approximate 50,000 square foot, 2 – story
medical office building and two smaller, outparcel style commercial, office or retail buildings
including surface parking and landscaped areas, see figure 2 for site plan.

2) Check the following activities that will be conducted prior to commencing earth-moving activities
at the site:
☒ Review of historic maps (Sanborn Maps, facility maps)
☐ Conducting geophysical surveys to evaluate the location of suspect UST, fuel lines, utility
lines, etc.
☐ Interviews with employees/former employees/facility managers/neighbors
3) Summary of Redevelopment Plans (MANDATORY: attach detailed plans or conceptual plans, if detailed plans are not available. EMP review without such information would be premature):
Provide brief summary of redevelopment plans, including demolition, removal of building
slabs/pavement, grading plans and planned construction of new structures:
Current redevelopment plans for the site include an approximate 50,000 square foot, 2 – story
medical office building and two smaller, outparcel style commercial, office or retail buildings.
Initial plans consist of the construction of the 2-story medical office building along with the
parking, drive, and landscape areas, with the construction of the two smaller outparcel buildings
to be conducted sometime in the future.

4) Do plans include demolition of structure(s)?:
☐ Yes ☒ No ☐ Unknown
☐ If yes, please check here to confirm that demolition will be conducted in accordance with
applicable legal requirements, including without limitation those related to lead and asbestos
abatement that are administered by the Health Hazards Control Unit within the Division of Public
Health of the North Carolina Department of Health and Human Services. If available, please
provide a copy of your demolition permit.

5) Are sediment and erosion control measures required by federal, state, or local regulations?
S&EC requirements can be found at: https://deq.nc.gov/about/divisions/energy-mineral-and-land-
resources/erosion-and-sediment-control/erosion-and-sediment-control-laws-and-rules
☒ Yes ☐ No ☐ Unknown
☒ If yes, please check here to confirm that earth-work will be conducted in accordance with
applicable legal requirements. If soil disturbance is necessary to install sediment and erosion
control measures, they may not begin until this EMP is approved.

6) Which category of risk-based screening level is used or is anticipated to be specified in the
Brownfields Agreement? Note: If children frequent the property, residential screening levels shall
be cited in the Brownfields Agreement for comparison purposes.

7
EMP Version 3, March 2023
☐ Residential ☒ Non-Residential or Industrial/Commercial

7) Schedule for Redevelopment (attach construction schedule):
a) Construction start date: 5/1/2024

b) Anticipated duration (specify activities during each phase):
One to two years

c) Additional phases planned? ☐ Yes ☒ No

If yes, specify the start date and/or activities if known:
Start Date: Click or tap to enter a date.
Planned Activity:
The 50,000 square foot medical office building will start on or about May 1, 2024. The two
outparcel commercial, office or retail buildings will be constructed sometime in the future,
but no date is currently known. The hope is to construct these buildings as part of the current
phase of work if market conditions allow. DEQ will be advised if the construction plans are
divided into two phases.

Start Date: Click or tap to enter a date.
Planned Activity:
Click or tap here to enter text.

Start Date: Click or tap to enter a date.
Planned Activity:
Click or tap here to enter text.
d) Provide the planned date of occupancy for new buildings: To be Determined

CONTAMINATED MEDIA
Please fill out the sections below, using detailed site plans, if available, or estimate using known areas
of contaminated soil and a conceptual redevelopment plan. Provide a figure overlaying new
construction onto figure showing contaminated soil and groundwater locations.

1) Contaminated Media on the Brownfields Property
Part 1. Soil: ☒ Yes ☐ No ☐ Suspected ☐ Unknown
Part 2. Groundwater: .................................... ☒ Yes ☐ No ☐ Suspected ☐ Unknown
Part 3. Surface Water: ☐ Yes ☒ No ☐ Suspected ☐ Unknown ☐ N/A
Part 4. Sediment: .......................................... ☒ Yes ☐ No ☐ Suspected ☐ Unknown ☐ N/A
Part 5. Soil Vapor: ......................................... ☐ Yes ☒ No ☐ Suspected ☐ Unknown
Part 6. Sub-Slab Soil Vapor: .......................... ☐ Yes ☐ No ☐ Suspected ☒ Unknown
Part 7. Indoor Air: ......................................... ☐ Yes ☐ No ☐ Suspected ☒ Unknown

8
EMP Version 3, March 2023

2) For the Area of Proposed Redevelopment on the Brownfields Property, attach tabulated data
summaries for each impacted media and figure(s) with sample locations.

PART 1. SOIL
1) Known or suspected contaminants in soil (list general groups of contaminants):
RCRA Metals, VOCs, iron, and copper
2) Depth of known or suspected contaminants (feet):
From 0 to 5 feet below ground surface 3) Area of soil disturbed by redevelopment (square feet):
275,000

4) Depths of soil to be excavated (feet):
Maximum proposed cut depth of site redevelopment is 14.68 in a limited area of the site;
however, most excavation and/or cut depths across the site are less than 5 feet, as indicated on
the Cut-Fill Exhibit included in the Attachments.

5) Estimated volume of soil (cubic yards) to be excavated (attach grading plan):
18,813

6) Estimated volume of excavated soil (cubic yards) anticipated to be impacted by contaminants:
Arsenic exceeded the commercial/industrial PSRGs in three locations; however, the
concentrations were within the natural occurring range for soils in that area and therefore not
anticipated to be “impacted”.

Copper and lead also exceeded the commercial/industrial PSRGs in soil samples, due to foundry
sand originating on the adjacent property to the south. Based on site assessment activities, the
foundry sand and associated impacted soils are located predominately near the southwestern
portion of the site. The volume of the foundry sand and associated impacted soils is estimated at
1,194 to 2,388 cubic yards in the area of the proposed redevelopment/disturbed areas of the
site. Currently, it is anticipated that the identified foundry sand and associated impacted soils
will be excavated and removed from the site and disposed at an approved, offsite facility prior to
redevelopment; therefore, foundry sand should not be encountered during redevelopment/site
grading. However, if foundry sand is observed during redevelopment activities, these materials
will be addressed as discussed in this EMP.

7) Estimated volume of contaminated soil expected to be disposed of offsite, if applicable:
Less than 1,500 cubic yards, AFTER removal of the estimated 1,194 to 2,388 cubic yards of
foundry sand and associated impacted soils.

9
EMP Version 3, March 2023
PART 1.A. MANAGING ONSITE SOIL
If soil is anticipated to be excavated from the Brownfield Property, relocated on the Brownfields
Property, or otherwise disturbed during site grading or other redevelopment activities, please
provide a grading plan that clearly illustrates areas of cut and fill (approximate areas & volumes are
acceptable, if only preliminary data available).

1) HAZARDOUS WASTE DETERMINATION:
a) Does the soil contain a LISTED WASTE as defined in the North Carolina Hazardous
Waste Section under 40 CFR Part 261.31-261.35?....................................... ☐Yes ☒No
☐ If yes, explain why below, including the level of knowledge regarding processes
generating the waste (include pertinent analytical results as needed).
Click or tap here to enter text.

☐ If yes, do the soils exceed the “Contained-Out” levels in Attachment 1 of the
North Carolina Contained-In Policy?................................................. ☐ Yes ☒ No

b) NOTE: IF SOIL MEETS THE DEFINITION OF A LISTED HAZARDOUS WASTE AND EXCEEDS
THE CONTAINED-OUT LEVELS IN ATTACHMENT 1 TO THE NORTH CAROLINA
CONTAINED-IN POLICY, THE SOIL MAY NOT BE RE-USED ONSITE AND MUST BE
DISPOSED OF IN ACCORDANCE WITH DEQ HAZARDOUS WASTE SECTION RULES AND
REGULATIONS.
c) Does the soil contain a CHARACTERISTIC WASTE?.................................... ☒ Yes ☐ No
☐ If yes, mark reason(s) why below (and include pertinent analytical results).
☐ Ignitability Click or tap here to enter text.
☐ Corrosivity Click or tap here to enter text.
☐ Reactivity Click or tap here to enter text.
☐ Toxicity Click or tap here to enter text.
☐ TCLP results Click or tap here to enter text.
☒ Rule of 20 results (20 times total analytical results for an individual
hazardous constituent on TCLP list cannot, by test method, exceed regulatory
TCLP standard)
During all soil disturbance at the site (excavation and trenching), workers
and contractors will observe soil for evidence of potential impacts. Evidence
of potentially impacted soil includes a distinct unnatural color, strong odor,
or filled or previously disposed materials of potential environmental
concern (i.e., chemicals, tanks, drums, etc.). Further evidence of impacted
soil will include black colored foundry sand or orange, yellow, and brown
thermal sands with core butts present. Core butts are internal molds from
the casting proves and are hardened sandy cylindrical objects typically
about 3 inches in length when not broken. Should the above be observed

10
EMP Version 3, March 2023
during site work, the contractor shall stop all work in that area and contact
ECS to assess the suspect condition. If ECS confirms that the material may
be impacted, then the procedures below will be implemented. In addition,
the NCDEQ Brownfields project manager will be contacted within 48 hours
to advise of the condition.

☐ If no, explain rationale:
Foundry sands (that may be a characteristic waste) and associated soils in the
vicinity of former Shield boring B-32 in the southwestern portion of the site (see
attached figure) will be removed subject to a separate work plan prior to site
development. Based on soil sampling conducted as part of the Brownfields
assessment in the area outside of B-32, site soil does not contain foundry sand
and/or other soil or materials that would contain characteristic waste.

d) NOTE: IF SOIL MEETS THE DEFINITION OF A CHARACTERISTIC HAZARDOUS WASTE, THE
SOIL MAY NOT BE RE-USED ONSITE AND MUST BE DISPOSED OF IN ACCORDANCE WITH
DEQ HAZARDOUS WASTE SECTION RULES AND REGULATIONS.

2) Screening criteria by which soil disposition decisions will be made (e.g., left in place, capped in
place with low permeability barrier, removed to onsite location and capped, removed offsite):
☐ Preliminary Health-Based Residential SRGs
☒ Preliminary Health-Based Industrial/Commercial SRGs
☒ Division of Waste Management Risk Calculator (For Brownfields Properties Only)
☐ Site-specific risk-based cleanup level. Please provide details of methods used for
determination/explanation.
Click or tap here to enter text.

Additional comments:
Click or tap here to enter text.

3) If known impacted soil is proposed to be reused within the Brownfields Property boundary,
please check the measures that will be utilized to ensure safe placement and documentation of
same. Please attach a proposed location diagram/site map.
☒ Provide documentation of analytical report(s) to Brownfields project manager.
☒ Provide documentation of final location, thickness and depth of relocated soil onsite map to
Brownfields project manager once known.
☐ Geotextile to mark depth of fill material.
Provide description of material:
Click or tap here to enter text.

11
EMP Version 3, March 2023

☒ Manage soil under impervious cap ☒ or clean fill ☒
☐Describe cap or fill:
If impacted soil above what is permitted in this EMP is encountered and reused onsite it will
be either located under asphalt/concrete parking/drive areas, or placed below at least 2 feet
of documented or demonstrably clean fill material. However, if foundry sands and/or
thermal sands are encountered, they will not be moved our reused onsite.
☒ Confer with NC BF project manager if Brownfield Plat must be revised (or re-recorded if
actions are Post-Recordation).
☒ GPS the location and provide site map with final location.
☐ Other. Please provide a description of the measure:

4) Please describe the following action(s) to be taken during and following excavation and
management of site soils:
☒ Check to confirm that management of fugitive dust from site activities will be handled in
accordance with applicable local, state, and federal requirements.

Field screening of site soil
At a minimum, contractors shall be made aware of protocols should impacted soils (e.g. staining,
unusual odors, fill materials) be identified.

Describe the field screening method, frequency of field screening, person conducting field
screening:
During all soil disturbance at the site (excavation and trenching), workers and contractors
will observe soil for evidence of potential impacts. Evidence of potentially impacted soil
includes a distinct unnatural color, strong odor, or filled or previously disposed materials of
potential environmental concern (i.e., chemicals, tanks, drums, etc.). Further evidence of
impacted soil will include black colored foundry sand or orange, yellow, and brown thermal
sands with core butts present. Core butts are internal molds from the casting proves and
are hardened sandy cylindrical objects typically about 3 inches in length when not broken.
Should the above be observed during site work, the contractor shall stop all work in that
area and contact ECS to assess the suspect condition. If ECS confirms that the material may
be impacted, then the procedures below will be implemented. An X-Ray Fluorescence
(XRF) machine may be used to determine impacted soils on site. In addition, the NCDEQ
Brownfields project manager will be contacted within 48 hours to advise of the condition.
Soil sample collection
☐ Yes

☒ Not anticipated - In order to avoid delays in construction, a plan shall be in place for sampling
Click or tap here to enter text.

12
EMP Version 3, March 2023
of suspect soils should they be encountered during redevelopment. If soil sample collection is
not anticipated but the need to do so is identified during redevelopment, notify the Brownfields
project manager of the anticipated sample and report dates for scheduling purposes.

Describe the sampling method (e.g., in-situ grab, composite, stockpile, etc.) and confirm that all
procedures outlined in applicable DEQ guidance for assessment shall be followed Typically, at
least one representative sample (per 500 yd3 for residential and 1,000 yd3 for commercial)
consisting of a 3 to 5-point composite sample with grab sample for VOCs based on the highest PID
reading is required to determine soil management options:
If suspect soils other than foundry sand are encountered and soil sample collection is
necessary, one 5-point composite sample will be collected for every approximately 1,000
cubic yards (CY) of impacted soil encountered and in general accordance with the most
current version of the IHSB guidelines for Assessment and Cleanup of Contaminated Sites,
unless NCDEQ approves an alternate sampling frequency. One grab soil sample will be
collected for VOCs by EPA Method 8260 for every 1,000 CY. The grab sample will be
chosen based on the highest PID reading from the grab samples from the 5-point
composite sample. The suspect soils, if encountered, will be temporarily contained as
illustrated on Figure 1. If foundry sand is identified on the subject property during site
redevelopment activities, the extent of the foundry sand will be visually assessed and
delineated, and ECS will discuss with NCDEQ for their recommended disposal of the
foundry sand. A Tree Save area will be located in the southern portion of the property.
Soils located within the Tree Save area will not be disturbed (see attached Figure). The
Tree Save area will be surveyed in, marked with silt fencing, and isolated from the rest of
the site, so that it is not disturbed.

Check applicable chemical analytes for soil samples:
☒ Minimum Sample Requirements: Volatile organic compounds (VOCs) by EPA Method
8260; Semi-volatile organic compounds (SVOCs) by EPA Method 8270; and Metals RCRA
List + Hexavalent Chromium by EPA Method 6020/7199
☐ Pesticides: Specify Analytical Method Number(s): Click or tap here to enter text.
☐ PCBs: Specify Analytical Method Number(s): Click or tap here to enter text.
☒ Other Constituents & Respective Analytical Method(s) (e.g. Herbicides): Iron, Copper, and Zinc by EPA method 6020

☒ Check to confirm that by the owner’s signature and the North Carolina Professional
Engineer/Geologist sealing this EMP the consultant understands that no work plan for suspect
soil sample collection will be submitted beyond this EMP, and that it is the responsibility of the
sealing professional and property owner to ensure that all applicable guidelines and
methodologies are followed and reported to DEQ for determination and approval of soil
placement prior to final relocation.

13
EMP Version 3, March 2023
If impacted soils above applicable PSRGs and/or site specific risk thresholds are proposed to be
relocated on-site, prior to final placement on-site, the following shall be submitted for DEQ
review/approval
- Analytical data that has been sampled in accordance with the above referenced frequency and
following procedures outlined in the most recent Brownfields Redevelopment Section
Environmental Site Assessment Work Plan Minimum Requirements Checklist (Checklist) and in
accordance with DEQ IHSB Guidelines for Assessment and Cleanup of Contaminated Sites
(Guidelines)
- Figure outlining planned soil placement and any future site features including
buildings/hardscape/open areas
- A North Carolina PE/PG recommendation of placement

Impacts
Options
Onsite Placement without
conditions
Onsite placement under 2 ft
of cap or clean fill1, 2
All Constituents below applicable
PSRGs X
Constituents3 below applicable
PSRGs; Metals below background
but above PSRGs
X
Constituents3 below applicable
PSRGs; Metals above Background
/PSRGs
X
Constituents above Applicable
PSRGs X
1: Requires Prior Written DEQ Approval
2: VOC impacted soils above applicable PSRGs shall not be placed directly beneath building footprints
without prior written DEQ approval.
3: Constituents indicate any samples evaluated for other than metals.

☒ Check to confirm that stockpiling of known or suspected impacted soils will be conducted in
accordance with Figure 1 of this EMP. Stockpile methodology should provide erosion control,
prohibiting contact between surface water/precipitation and contaminated soil, and preventing
contaminated runoff. Explain any variances or provide additional details as needed:

☒ Final grade sampling of exposed native soil (i.e., soil that will not be under buildings or
permanent hardscape). Select chemical analyses for final grade samples with check boxes below
(Check all that apply):
☒ Minimum Sample Requirements: Volatile organic compounds (VOCs) by EPA Method
8260; Semi-volatile organic compounds (SVOCs) by EPA Method 8270; and Metals RCRA
List + Hexavalent Chromium by EPA Method 6020/7199

☐ Pesticides: Specify Analytical Method Number(s): Click or tap here to enter text.
☐ PCBs: Specify Analytical Method Number(s):
Click or tap here to enter text.

14
EMP Version 3, March 2023
Click or tap here to enter text.
☒ Other Constituents & Respective Analytical Method(s) (e.g. Herbicides): Iron, Copper, and Zinc by EPA Method 6020

Please provide a scope of work for final grade sampling, including a diagram of soil
sampling locations, number of samples to be collected, and brief sampling methodology.
Samples should be collected from 0-2 ft below ground surface, with the exception of VOCs
which should be taken from 1-2 ft below ground surface. Alternatively, indicate if a work
plan for final grade sampling may be submitted under separate cover.
A work plan for final grade sampling will be prepared for NCDEQ review and approval
under separate cover.

☐ If final grade sampling was NOT selected, please explain rationale:
Click or tap here to enter text.

PART 1.B. IMPORTED FILL SOIL

NO SOIL MAY BE BROUGHT ONTO THE BROWNFIELDS PROPERTY WITHOUT PRIOR APPROVAL FROM
THE BROWNFIELDS REDEVELOPMENT SECTION. According to the Brownfields IR 15, “Documenting
imported soil (by sampling, analysis, and reporting in accordance with review and written approval
in advance by the Brownfields Redevelopment Section), will safeguard the liability protections
provided by the brownfields agreement and is in the best interest of the prospective
developer/property owner.”

Requirements for importing fill:
☐ Check to confirm that the import volumes outlined below have been confirmed based on
geotechnical evaluations.

1) Will fill soil be imported to the site?................................................ ☐ Yes ☐ No ☒ Unknown

2) If yes, what is the estimated volume of fill soil to be imported?
Soil import is not expected, but if soil import is needed during development, the provisions of this
section will be followed.

3) If yes, what is the anticipated depth that fill soil will be placed at the property? (If a range
of depths, list the range.)
Soil import is not expected, but this section is being completed for contingency planning.

PRIOR TO SOIL PLACEMENT AT THE BROWNFIELDS PROPERTY, a Soil Import Request must be
submitted for DEQ Brownfields review and approval. The request shall consist of a data
package that details:

- Fill source location/history (Phase I if available, current aerials, etc.)
- Analytical data that has been sampled in accordance with the below frequency and

15
EMP Version 3, March 2023
following procedures outlined in the most recent Brownfields Redevelopment Section
Environmental Site Assessment Work Plan Minimum Requirements Checklist (Checklist)
and in accordance with DEQ IHSB Guidelines for Assessment and Cleanup of
Contaminated Sites (Guidelines)
- A table comparing the import soil to existing site concentrations
- A PE/PG recommendation of import
- All relevant attachments listed in the Checklist

Soil Import Sampling Requirements:
Source Sample Frequency Sample Analysis
Virgin Material from DEQ
Brownfields Pre-
approved Quarry
None (Contact Brownfields project manager for list of pre-
approved Quarries
DEQ Permitted Quarry
(Not Brownfields Pre-
approved)
At least one
representative sample
from area of planned
import
VOCs, SVOCs, RCRA
Metals, any site specific
COCs (e.g. pesticides,
PCBs, etc.)
Other NC DEQ
Brownfields Property
At least one
representative sample
per 1,000 yd3 consisting
of a 3-point composite
sample with grab sample
for VOCs based on the
highest PID reading
VOCs, SVOCs, RCRA
Metals, any site specific
COCs (e.g. pesticides,
PCBs, etc.)
Off-site
unpermitted/regulated
property
Bulk Landscape Material
from Commercial Vendor
(i.e. topsoil)
No Sampling Required

If other special considerations apply, discuss:
Additional analysis for iron, copper and zinc by EPA Method 6020 may also be required by the
NCDEQ.

☒ Check to confirm that by the owner’s signature and the North Carolina Professional
Engineer/Geologist sealing this EMP the consultant understands that no work plan for suspect soil
sample collection will be submitted beyond this EMP, and that it is the responsibility of the sealing
professional and property owner to ensure that all applicable guidelines are followed and reported in
the Soil Import Request for DEQ approval. Failure to meet these requirements could result in
resampling and/or failure to approve import.

PART 1.C. SOIL EXPORT

NO SOIL MAY LEAVE THE BROWNFIELDS PROPERTY WITHOUT APPROVAL FROM THE
BROWNFIELDS REDEVELOPMENT SECTION. Failure to obtain approval may violate a brownfields
agreement causing a reopener or jeopardizing eligibility in the Section, endangering liability
protections and making said action possibly subject to enforcement. Justifications provided
below must be approved by the Section in writing prior to completing transport activities. Refer

16
EMP Version 3, March 2023
to Brownfields IR 15 for additional details.
1) If export from the Brownfields Property is anticipated, export soil must be sampled at a
frequency of one sample per 1,000 yd3 consisting of a 3-point composite sample with a
grab sample for VOCs based on the highest PID reading. Samples shall be analyzed at a
minimum for VOCs, SVOCs, and RCRA metals plus any site specific COCs.

PRIOR TO EXPORT FROM THE BROWNFIELDS PROPERTY, a Soil Export Request must be
submitted for DEQ Brownfields review and approval. The request shall consist of a Data
Package that details:

- Proposed Receiving Facility
- Analytical data that has been sampled in accordance with the above referenced
frequency and following procedures outlined in the most recent Brownfields
Redevelopment Section Environmental Site Assessment Work Plan Minimum
Requirements Checklist (Checklist) and in accordance with DEQ IHSB Guidelines for
Assessment and Cleanup of Contaminated Sites (Guidelines)
- A table comparing the export soil to concentrations on the receiving site concentrations
including risk comparison (Note that calculated risk cannot be increased on the receiving
site)
- A North Carolina PE/PG recommendation of export
- Written approval from the receiving site property owner representative for export
- All relevant attachments listed in the Checklist

Soil Export Options
Impacts
Options
Use as
Beneficial Fill
Off-site disposal at
other Brownfields
Property2,6,7
Off-site disposal
at LCID/CD
Landfill1, 3
Off-site disposal at Subtitle
D MSW/Permitted
Landfarm4
All Constituents below
applicable PSRGs X X X X
Constituents5 below
applicable PSRGs; Metals
below background but
above PSRGs
X X X X
Constituents5 below
applicable PSRGs; Metals
above Background /PSRGs
X X X
Constituents above
Applicable PSRGs X X
1: Requires Prior Written DEQ Approval
2: VOC impacted soils above applicable PSRGs shall not be placed directly beneath building footprints
without prior written DEQ approval.
3: Requires comparison to site specific metals concentrations.
4: Facility to determine if they can accept soil within their permit.
5: Constituents indicate any samples evaluated for other than metals.
6: Requires written approval from receiving site property owner representative.

17
EMP Version 3, March 2023
7. Site COCs must be in comparable concentrations to receiving site and not significantly raise risk of
the receiving site.

☒ Check to confirm that by the owner’s signature and the North Carolina Professional
Engineer/Geologist sealing this EMP the consultant understands that no work plan for suspect soil
sample collection will be submitted beyond this EMP, and that it is the responsibility of the sealing
professional and property owner to ensure that all applicable guidelines are followed and reported in
the Soil Export Request for DEQ approval. Failure to meet these requirements could result in
resampling and/or failure to approve export.

If other special considerations apply, discuss:
If foundry sand is observed, it will be handled in accordance with Part 1.A. Managing Onsite Soil.

PART 1.D. MANAGEMENT OF UTILITY TRENCHES

☐ Install liner between native impacted soils and base of utility trench before filling with clean fill
(Preferred)

☒ Last out, first in principle for impacted soils (if soil can safely be reused onsite and is not a
hazardous waste), i.e., impacted soils are placed back at approximately the depths they were
removed from such that impacted soil is not placed at a greater depth than the original depth
from which it was excavated.

☐ Evaluate whether necessary to install barriers in conduits to prevent soil vapor transport,
and/or degradation of conduit materials due to direct impact with contaminants.
☐ If yes, provide specifications on barrier materials or provide the results of this evaluation in the
Vapor Mitigation Plan. Note that if vapor mitigation is planned for site buildings, utility corridors
will need to be evaluated as part of mitigation designs:
Click or tap here to enter text.

☐ If no, include rationale here:
Click or tap here to enter text.

☐ Unknown, details to be provided in the Vapor Mitigation Plan for site buildings

Other comments regarding managing impacted soil in utility trenches:
If foundry sand is observed in the removed soils, those soils will not be placed back into the
excavation. They are to be stockpiled, sampled and managed in accordance with this EMP.

PART 2. GROUNDWATER

1) What is the depth to groundwater at the Brownfields Property?
Based on previous assessments, the depth to groundwater is approximately 21 to 29 feet

18
EMP Version 3, March 2023
2) What is the maximum depth of soil disturbance onsite?
The maximum depth of soil disturbance is approximately 15 feet

3) Is groundwater known to be contaminated by ☐onsite ☒offsite ☐both or ☐unknown
sources? Describe source(s):
Groundwater impacts have been documented at the adjacent parcel to the south from the
former Conbraco Industrial facility that previously operated as a metals foundry.

4) What is the direction of groundwater flow at the Brownfields Property?
Groundwater flow direction beneath the site is anticipated to be northwest based on relative
groundwater elevations collected during previous assessment as illustrated on the attached
figure.

5) Will groundwater likely be encountered during planned redevelopment activities (e.g.
footer/utility construction or helical pilings?)
☐Yes ☒No
If yes, describe these activities:
Click or tap here to enter text. In the event that groundwater is encountered during redevelopment activities (even if no is checked above), list activities for contingent management of groundwater (e.g., dewatering of groundwater from excavations or foundations, containerizing, offsite disposal, discharge to sanitary sewer, NPDES permit, or sampling procedures).
If groundwater is encountered during site redevelopment, appropriate worker safety measures
will be undertaken, and groundwater will be allowed to re-infiltrate assuming it does not affect
the construction schedule. If accumulated water remains, samples of the water will be collected
and analyzed for VOCs by EPA Method 8260, SVOCs by EPA Method 8270, RCRA Metals by EPA
Method 6010/7470, and Hexavalent Chromium by EPA Method 7199 to determine if
contaminants are present. Water that contains contaminants above the NCAC 2B Surface water
standards will be disposed of at an offsite permitted facility in accordance with regulatory
requirements. Accumulated water that does not contain contaminants above the NCAC 2B
standards will be managed by allowing the water to re-infiltrate into the ground or to be
discharged to the storm sewer, if permitted by municipal, state and federal requirements.

6) Are monitoring wells currently present on the Brownfields Property?.................☐Yes ☒No
If yes, are any monitoring wells routinely monitored through DEQ or other
agencies?..................................................................................................................☐Yes ☐No

7) Please check methods to be utilized in the management of known and previously
unidentified wells.
☐ Abandonment of site monitoring wells in accordance with all applicable regulations. It
is the Brownfields Redevelopment Section’s intent to allow proper abandonment of
well(s) as specified in the Brownfields Agreement, except if required for active
monitoring through another section of DEQ or the EPA.
☐ Location of existing monitoring wells marked

19
EMP Version 3, March 2023
☐ Existing monitoring wells protected from disturbance
☒ Newly identified monitoring wells will be marked and protected from further
disturbance until notification to DEQ Brownfields can be made and approval for
abandonment is given.

8) Please provide additional details as needed:

Please note, disturbance of existing site monitoring wells without approval by DEQ is not
permissible. If monitoring wells are damaged and/or destroyed, DEQ may require that the PD
be responsible for replacement of the well.

PART 3. SURFACE WATER
1) Is surface water present at the property? ☒ Yes ☐ No
2) If yes, attach a map showing the location of surface water at the Brownfields Property
3) Is surface water at the property known to be contaminated? ☐ Yes ☒ No ☐ Unknown
4) Will workers or the public be in contact with surface water during planned redevelopment
activities or as part of the final redevelopment? ☒ Yes ☐ No
5) In the event that contaminated surface water is encountered during redevelopment
activities, or clean surface water enters open excavations, list activities for management of
such events (e.g. flooding, contaminated surface water run-off, stormwater impacts):
Contractors/workers will attempt to fill in/around the surface water located in the central
portion of the site. Alternatively, the surface water will be redirected to a sediment pond or
other area on the site and be allowed to infiltrate into the soil, but not leave the subject site.

PART 4. SEDIMENT
1) Are sediment sources present on the property? ☒ Yes ☐ No
2) If yes, is sediment at the property known to be contaminated? ☒ Yes ☐ No ☐ Unknown
3) Will workers or the public be in contact with sediment during planned redevelopment
activities? ☒ Yes ☐ No
4) Attach a map showing the location of known contaminated sediment at the property.
5) In the event that contaminated sediment is encountered during redevelopment activities, list
activities for management of such events (stream bed disturbance):
Sediment exceeded Soil to Groundwater PSRG, but not Industrial/Commercial PSRGs. Sediment
will be left in place or graded if suitable for construction. If suspected impacted sediment in
excess of Industrial/Commercial PSRGs are identified by the contractors during activities that will
involve sediment disturbance, the contractor will contact the environmental consultant to
Click or tap here to enter text.

20
EMP Version 3, March 2023
observe the suspect soils. The consultant will confirm the material may be impacted using field
observations and screening with a photoionization detector or flame ionization detector, then the
sediment will be managed in accordance with the EMP. The NCDEQ Brownfields project manager
will be notified of the conditions within 48 hours. Impacted sediment will be either located under
asphalt/concrete parking/drive areas, or placed below at least 2 feet of documented or
demonstrably clean fill.

PART 5. SOIL VAPOR
1) Do concentrations of volatile organic compounds at the Brownfields property exceed the vapor intrusion screening levels (current version) in the following media: Groundwater Exterior Soil Vapor Sub-Slab Soil Vapor
Residential ☒ Yes ☐ No
☐ Unknown
☐ Yes ☒ No
☐ Unknown ☐ Yes ☐ No
☒ Unknown
Commercial ☐ Yes ☒ No
☐ Unknown ☐ Yes ☒ No
☐ Unknown ☐ Yes ☐ No
☒ Unknown
2) Attach a map showing the locations of all soil vapor samples including any soil vapor
contaminants that exceeds screening levels and overlays planned site development features.
3) If applicable, at what depth(s) is exterior soil vapor known to be contaminated?

4) If applicable, at what depth(s) is sub-slab soil vapor known to be contaminated?
☐0-6 inches ☐Other, please describe:
Not Applicable. See above.
5) Will workers encounter contaminated exterior or sub-slab soil vapor during planned
redevelopment activities? ☐ Yes ☐ No ☒ Unknown
In the event that apparent contaminated soil vapor is encountered (based on elevated PID
readings, unusual odors, etc.) during redevelopment activities (trenches, manways, basements or
other subsurface work,) list activities for management of such contact, INCLUDING notification to
DEQ within 48 hours of identification of the issue for determination of additional requirements:
If contaminated soil vapors are observed during redevelopment activities, workers/contractors
will take appropriate measures and contact the environmental consultant to mobilize to the site
for observation and documentation. The NCDEQ will be notified within 48 hours of the
observation, and an additional assessment will be discussed with Brownfields. If the vapors are
field screened with a PID and indicate conditions such that immediate danger to life and health
are of concern, the area shall be evacuated, and the local fire department contacted. ECS will
then assist in documenting the conditions and assist in determining engineering controls for the
Not Applicable. Soil vapors were not shown to exceed Residential or Industrial/Commercial standards
by Risk Calculator.

21
EMP Version 3, March 2023
vicinity of concern.

PART 6. INDOOR AIR
1) Are indoor air data available for the Brownfields Property? ☐ Yes ☒ No
2) If applicable, attach a map showing the location(s) where indoor air contaminants exceed site
screening levels.
3) If the structures where indoor air has been documented to exceed risk-based screening levels will
not be demolished as part of redevelopment activities, will workers encounter contaminated
indoor air during planned redevelopment activities? ☐ Yes ☐ No ☐ Unknown ☒ N/A

☐ If no, include rationale here:
Click or tap here to enter text.
4) In the event that contaminated indoor air is encountered during redevelopment activities, list
activities for management of such contact:

VAPOR INTRUSION MITIGATION SYSTEM
1) Is a vapor intrusion mitigation system (VIMS) proposed for this Brownfields Property?
☒ Yes ☐ No ☐ Unknown

☐ If no or unknown, include rationale here as well as plans for pre-occupancy sampling, as
necessary:
Click or tap here to enter text.

If yes, ☐ VIMS Plan Attached or ☒ VIMS Plan to be submitted separately
If submitted separately provide date:
Click or tap here to enter text. VIMS Plan shall be signed and sealed by a NC Professional Engineer and follow the DEQ Brownfields Redevelopment Section’s Vapor Intrusion Mitigation System Design Submittal Requirements. Note that approval of this EMP does not imply approval with any vapor intrusion mitigation land
use restrictions or requirements of the recorded or draft Brownfields Agreement and that
If contaminated indoor air is observed during site redevelopment, contractors/workers will stop work
and take appropriate measures and contact the environmental consultant to mobilize to the site for
field observation and documentation. The NCDEQ will be notified within 48 hours of the observation,
and an additional assessment will be discussed with Brownfields. If indoor air is field screened with a
PID and indicates conditions such that immediate danger to life and health are of concern, the area
shall be evacuated, and the local fire department contacted. ECS will then assist in documenting the
conditions and assist in determining engineering controls for the vicinity of concern.

22
EMP Version 3, March 2023
separate approval of mitigation measures will be required.

CONTINGENCY PLAN

In this section, please provide actions that will be taken to identify or manage unknown
potential new sources of contamination. During redevelopment activities, it is not uncommon
that unknown tanks, drums, fuel lines, landfills, or other waste materials are encountered.
Notification to DEQ Brownfields project manager, UST Section, Fire Department, and/or other
officials, as necessary and appropriate, is required when new potential source(s) of
contamination are discovered. These Notification Requirements were outlined on Page 1 of this
EMP.

Should potentially impacted materials be identified that are inconsistent with known site
impacts, the DEQ Brownfields project manager will be notified, and a sampling plan will be
prepared based on the EMP requirements and site-specific factors. Samples will generally be
collected to document the location of the potential impacts.

Check the following chemical analysis that are to be conducted on newly identified releases:
☒ Minimum Sample Requirements: Volatile organic compounds (VOCs) by EPA Method 8260;
Semi-volatile organic compounds (SVOCs) by EPA Method 8270; and Metals RCRA List +
Hexavalent Chromium by EPA Method 6020/7199

☐ Pesticides: Specify Analytical Method Number(s):
Click or tap here to enter text.

☐ PCBs: Specify Analytical Method Number(s):
Click or tap here to enter text.

☒ Other Constituents & Analytical Method(s) (e.g. Herbicides)
Please note, if field observations indicate the need for additional analyses, they should
be conducted, even if not listed here.
Copper, Iron, and Zinc by EPA Method 6020

Please provide details on the proposed methods of managing the following commonly
encountered issues during redevelopment of Brownfields Properties.

Underground Storage Tanks – Note that UST Section guidelines must be followed for sample
frequency during UST closure. Unless damage to onsite structures to remain as part of
redevelopment would occur, USTs shall be removed from the Brownfields Property:
If encountered, the contents of the UST will be evaluated, and based on the contents, the UST will
be removed and transported offsite for disposal. If the UST cannot be removed, it may be
abandoned in-place with prior NCDEQ approval. Any fluids within a discovered UST will be removed
using a vacuum truck and properly disposed of. Soil samples will be collected from the base of the
UST excavation and submitted for laboratory analysis of VOCs, SVOCs, RCRA Metals, and hexavalent
chromium, or as otherwise approved by NCDEQ. Impacted soils will be managed under Part 1A.

23
EMP Version 3, March 2023
Managing Onsite Soil. The NCDEQ will be notified within 48 hours of the discovery of a UST.

Sub-Grade Feature/Pit:
If sub-grade features are encountered, the contractor will be instructed to stop work and contact
the environmental consultant to evaluate. If a feature is identified, the contents and the feature will
be removed and transported offsite for disposal. Following removal, soil samples will be collected
from the base of the excavation and submitted for laboratory analysis of VOCs, SVOCs, RCRA
Metals, hexavalent chromium or as otherwise approved by NCDEQ. The NCDEQ will be notified
within 48 hours of the discovery. Based on laboratory analytical results, the waste will be disposed
of offsite at an approved facility or managed under Part 1.A. Managing Onsite Soil, whichever is
most applicable based on the type of waste present.
Buried Waste Material – Note that if buried waste, non-native fill, or any obviously filled materials
is encountered, the DEQ Brownfields Redevelopment Section must be notified to determine if
investigation of landfill gases is required:
If buried waste material is encountered, the contractor will be instructed to stop work and contact
the environmental consultant to evaluate. Following evaluation, if confirmed, the waste will be
removed, characterized, and disposed of offsite. Soil samples will be collected from the base and
sidewalls of the excavated material and submitted for laboratory analysis of VOCs, SVOCs, RCRA
metals, and hexavalent chromium or as otherwise approved by NCDEQ. The NCDEQ will be notified
within 48 hours of the discovery. Areas of suspected contaminated soil that remain at the site after
excavation is complete will be managed under Part 1.A. Managing Onsite Soil.

Re-Use of Impacted Soils Onsite:
If impacted soil is encountered during redevelopment activities and is able to be reused onsite
based on geotechnical characteristics and nature of soil contaminant impacts, ECS will confer with
Brownfields on if the reused soil needs to be surveyed in and the plat be updated.

If unknown, impacted soil is identified onsite, management onsite can be considered after the
project team provides the necessary information, outlined in Part 1.A. Item 11, for Brownfields
project manager approval prior to final placement onsite.

If other potential contingency plans are pertinent, please provide other details or scenarios as
needed below:
If evidence of potential foundry sand (typically black sand) is observed during site redevelopment
activities, as stated above, the contractor will be instructed to stop work in that area and contact
the environmental consultant to evaluate. Following evaluate, if confirmed, the foundry sand and
associated soils will be removed, characterized, and disposed offsite at a permitted facility. Soil
samples will be collected from the base and sidewalls of the excavation and submitted for
laboratory analysis of RCRA metals including iron, copper and zinc or as otherwise approved by the
NCDEQ. The NCDEQ will be notified within 48 hours of the discovery/confirmation.

24
EMP Version 3, March 2023

POST-REDEVELOPMENT REPORTING

☒ Check this box to acknowledge that a Redevelopment Summary Report will be required for the
project. If the project duration is longer than one year, an annual update is required and will be
due by January 31 of each year, or 30 days after each one-year anniversary of the effective date of
this EMP (as agreed upon with the project manager). These reports will be required for as long as
physical redevelopment of the Brownfields Property continues, except that the final
Redevelopment Summary Report will be submitted within 90 days after completion of
redevelopment. Based on the estimated construction schedule, the first Redevelopment Summary
Report is anticipated to be submitted on 1/31/2025

The Redevelopment Summary Report shall include environment-related activities since the last
report, with a summary and drawings, that describes:
1. actions taken on the Brownfields Property;
2. soil grading and cut and fill actions;
3. methodology(ies) employed for field screening, sampling and laboratory analysis of
environmental media;
4. stockpiling, containerizing, decontaminating, treating, handling, laboratory analysis and
ultimate disposition of any soil, groundwater or other materials suspected or confirmed
to be contaminated with regulated substances; and
5. removal of any contaminated soil, water or other contaminated materials (for example,
concrete, demolition debris) from the Brownfields Property (copies of all legally required
manifests shall be included).

☒ Check box to acknowledge consent to provide a NC licensed P.G. or P.E. sealed, Redevelopment
Summary Report in compliance with the site’s Brownfields Agreement.
1/22/2024

26
EMP Version 3, March 2023

Source: USGS Topographic Quadrangle Maps:
MINT HILL, NC., 08-03-2019 (Top)
MATTHEWS, NC., 08-03-2019 (Bottom)
Figure
Site Location
Conbraco
1640 Matthews Township Parkway
Matthews,Mecklenburg County, NC 28105
ECS Project No. 20027-B
Scale
1 inch =
0 1000 2000
2000 ft.
Site LocationSite Location
Approximate Property Boundary
Figure
Sample Locations
Conbraco
1640 Matthews Township Parkway
Matthews,Mecklenburg County, NC 28105
ECS Project No. 20027-B
Legend
-Soil Sample/Temporary Well
-Soil Sample
-Soil Gas Sample
-Soil Sample (CDGE Feb/Mar/May 2021)
-Sediment Sample
Scale
1 inch =
0 40 80
80 ft.
SG-9
SG-8
SG-5 SG-4
SG-3
SG-2 SG-1
SG-6
SG-7
SB-7
SB-10
SB-11
SB-8
SB-9
SB-13
SB-14
SB-12SB-15
SB-16
SB-18
SB-17
SB-6/TW-6
SB-5/TW-5SB-4/TW-4
SB-3/TW-3
SB-2/TW-2 SB-1/TW-188
31
89 9032
SS-1
SS-2
Limit of Sediment
Limit of Surface Water
Approximate Property Boundary
Figure
Identified Site Impacts to Remain
Conbraco
1640 Matthews Township Parkway
Matthews,Mecklenburg County, NC 28105
ECS Project No. 20027-B
SB-7
Scale
1 inch =
0 40 80
80 ft.
SB-6/TW-6
SB-5/TW-5SB-4/TW-4
SB-3/TW-3
SB-2/TW-2 SB-1/TW-1
SB-10
SB-11
SB-8
SB-9
SB-13
SB-14
SB-12SB-15
SB-16
SB-18
SB-17
Legend
-Soil Sample/Temporary Well
-Soil Sample
-Soil Gas Sample
-Soil Sample (CDGE Feb/Mar/May 2021)
-Sediment Sample
-Estimated Extent of Soil Impacts
-Estimated Extent of Groundwater
Impacts
TW-3 (8/7/23) Groundwater:
Iron @ 366 µg/L
Manganese @ 116 µg/L/
Dissolved Manganese @ 71.4 µg/L
TW-2 (8/7/23) Groundwater:
Manganese @ 159 µg/L
Dissolved Manganese @ 99.6 µg/L
TW-4 (8/7/23) Groundwater:
Iron @ 1790 µg/L
Lab Filtered Iron @ 8680 µg/L
Dissolved Iron @ 5700 µg/L
Manganese @ 81.1 µg/L
Lab Filtered Manganese @ 50.8 µg/L
Dissolved Manganese @ 132 µg/L
TW-5 (8/7/23) Groundwater:
TCE @ 4.6 µg/l
Iron @ 1150 µg/l
Dissolved Iron @ 4.6 µg/l
Manganese @ 81.5 µg/l
Dissolved Manganese @ 55.6 µg/l
TW-6 (8/7/23) Groundwater:
TCE @ 7.0 µg/L
Iron @ 5590 µg/L
Dissolved Iron @ 6180 µg/L
Manganese @ 147 µg/L
Dissolved Manganese @ 130 µg/L
Lab Filtered Manganese @ 66.2 µg/L
88
31
89 9032
Approximate Property Boundary
726766656463626160
60
61
62
63
64
65
66
6768 71 68697071
70
6972
Figure
Groundwater Flow Direction
Conbraco
1640 Matthews Township Parkway
Matthews,Mecklenburg County, NC 28105
ECS Project No. 20027-B
Scale
1 inch =
0 40 80
80 ft.
TW-6
TW-5TW-4
TW-3
TW-2 TW-1
Legend
-Temporary Well
-Groundwater Elevation (August 7, 2023)
(Based on Arbitrary Site Benchmark of 100')
-Groundwater Elevation Contour
-Inferred Groundwater Flow Direction
87.11
72.1971.13
68.64
62.84 68.12
59.09
MATTHEWS TOWNSHIPPARKWAY MOB/RETAIL1640 MATTHEWS TOWNSHIP PKWYMATTHEWS, NCCORPORATE CERTIFICATIONS
NC PE : C–2930 NC LA : C–253
SC ENG : NO. 3599 SC LA : NO. 211
MDLProject Manager:
Drawn By:MMS
Checked By:
Date:9/14/23
23077Project Number:
Sheet Number:
No.
REVISIONS:
Date By Description
SCALE: 1"=40'
0'40'80'160'
This Plan Is A
Preliminary Design.
NOT Released For
Construction.N
B-1
MATTHEWS TO
W
N
S
H
I
P

P
K
W
Y
MDL
CUT-FILL
EXHIBIT
LIMITS OF DISTURBANCE: +/- 5.6 ACRES
CUT:18,813.14 CUYD
FILL:6,690.86 CUYD
NET CUT:12,122.28 CUYD
CUT GENERATED FROM UNDERGROUND DETENTION:
SYSTEM 1: 768 LF OF 6' DIAMETER PIPE + 71 LF SF& FOREBAY= +/-820 CUYD
SYSTEM 2: 822 LFOF 8' DIAMETER PIPE + 170 LF SF& FOREBAY= +/-1,460 CUYD
Parameter
Sample ID SG-1 SG-2 SG-3 SG-4 SG-5 SG-6 SG-7 SG-8 SG-9 SG-Dup
Initial Sample Vaccum Reading (in Hg)-28 -24 -29 -29 -28 -29 -29 -28 -29 -29
Final Sample Vaccum Reading (in Hg)-5 -5 -5 -5 -3 -5 -5 -5 -5 -8
Sample Date
Acetone 787 200 413 1400 387 290 38.0 235 278 380 NS
Benzene 0.776 1.06 1.14 1.19 0.859 0.770 <0.639 0.722 0.783 1.41 160
Chloromethane <0.528 <0.528 <0.528 <0.528 <0.528 <0.528 1.05 <0.528 <0.528 <0.528 7,900
Cyclohexane <0.689 1.22 1.25 <0.689 <0.689 <0.689 <0.689 <0.689 <0.689 2.87 530,000
Ethanol 185 106 81.5 336 87.9 37.0 44.5 122 92.8 98.6 NS
Ethylbenzene 2.19 3.6 3.46 1.68 3.07 3.47 1.16 3.02 3.28 4.94 490
4-Ethyltoluene 1.39 1.8 2.13 <0.982 2.83 <0.982 <0.982 1.88 <0.982 4.12 NS
Trichlorofluormethane 1.39 1.4 1.21 1.19 <1.53 <1.12 <1.12 1.42 <1.12 <1.12 NS
Dichlorodifluoromethane 2.45 2.3 1.72 1.85 <1.40 1.88 2.25 2.01 1.56 1.55 8,800
n-Heptane <0.818 <0.818 2.66 1.57 1.33 2.38 <0.818 1.02 2.04 2.56 35,000
n-Hexane 6.1 2.04 6.13 7.65 3.56 6.10 <2.22 5.32 6.63 4.51 61,000
Methylene Chloride 10.1 8.51 4.79 11.3 5.03 1.38 3.38 9.69 6.35 5.35 53,000
2-Hexanone 22.2 7.12 14.2 34.1 11.1 22.0 <5.11 11.5 8.71 <5.11 2,600
2-Butanone (Methyl Ethyl Ketone)519 199 351 1880 301 188 44.2 189 261 159 440,000
2-Propanol 13.8 44.7 41.8 21.3 17.7 <3.07 4.52 39.3 12.2 121 18,000
Propylene 140 23.4 58.9 377 68.2 41.0 7.35 25.8 61.3 65.8 260,000
Styrene 3.09 4.11 2.38 <0.851 32.3 22.4 23.0 28.8 69.8 41.6 88,000
Tetrachloroethene <1.37 <1.37 3.56 <1.37 <1.37 <1.37 <1.37 4.62 2.54 1.71 3,500
Toluene 4.14 20.3 6.74 7.61 7.61 5.09 2.73 7.38 6.78 16.2 440,000
Trichloroethene <1.07 <1.07 <1.07 <1.07 <1.07 <1.07 <1.07 1.51 <1.07 <1.07 180
1,2,4-trimethylbenzene 1.71 7.8 2.54 1.02 2.95 2.18 1.05 1.51 2.12 4.34 5,300
1,3,5-Trimethylbenzene <0.982 <0.982 <0.982 <0.982 1.07 <0.982 <0.982 2.23 <0.982 1.54 5,300
2,2,4-trimethylpentane <0.934 <0.934 <0.934 <0.934 <0.934 <0.934 <0.934 <0.934 <0.934 0.939 NS
m,p-Xylene 3.87 5.81 8.71 2.98 6.03 6.03 2.18 5.59 5.94 11.7 8,800
o-Xylene 1.25 2.24 2.39 0.984 2.31 2.00 <0.867 1.86 1.88 4.77 8,800
Notes:
Results reported in micrograms per cubic meter (µg/m3)
In Hg = inches of mercury
SG-DUP is a duplicate of sample SG-5
Shaded Indicates Concentration is Less than Reporting Limit
NS Indicates standard has not been established for this constituent
SUMMARY OF SOIL GAS ANALYTICAL RESULTS
Conbraco Brownfields Site
1640 Matthews Township Parkway
Matthews, Mecklenburg County, North Carolina
ECS Project Number: 49:20027-B
NCDEQ, Brownfields Project No.: 08039-04-60
Results in µg/m3
Volatile Organic Compounds (VOCs) by EPA TO-15
NCDEQ Non-residential Sub-
slab and Exterior Soil Gas
Screening Levels8/4/2023
CrVI by
EPA 7199
Mercury
by EPA
7471
SVOCs by
EPA 8270
ArsenicBariumCadmiumChromiumCopperIronLeadManganeseSeleniumSilverZincChromium, HexavalentMercury1,1,1,2-Tetrachloroethane1,2,3-Trichloropropane1,3-Dichlorobenzene1,4-DichlorobenzeneAcetoneMethylene ChlorideTetrachloroetheneTrichloroethenen-Butylbenzenep-Isopropyltoluenetert-Butylbenzenebis(2-Ethylhexyl)phthalateDate
Collected
(mm/dd/yy)
Sample
Depth
(ft. BGS)
mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg
3 47,000 20 350,000 9,300 160,000 800 5,600 1,200 1,200 70,000 6.5 70 9.3 0.11 NS 12 210,000 650 82 4 12,000 NS 23,000 160
5.8 580 3 360,000 700 150 270 65 2.1 3.4 1,200 3.8 NS 0.00076 0.27 NS 0.12 25 0.025 0.0063 0.021 4.5 NS 3.1 14
SB-1-0-2.5 08/02/2023 0-2.5 0.601J 21.7 <0.119 9.72 11.2 18,100 8.59 72.7 0.438J <0.103 15.0J <0.303 <0.0214 <0.0042 <0.0055 <0.0034 <0.0028 <0.069 <0.030 <0.0034 <0.0087 <0.0068 <0.0053 <0.0038 <0.15
SB-1-2.5-5 08/02/2023 2.5-5 0.495J 19.6 <0.116 8.96 8.68 16,200 7.92 63.8 0.369J <0.117 11.2J <0.346 <0.0542 <0.0038 <0.0049 <0.0030 <0.0025 <0.063 <0.027 <0.0031 <0.0079 <0.0062 <0.0048 <0.0035 <0.15
SB-2-0-2.5 08/02/2023 0-2.5 2.28 44.9 <0.111 9.35 66.0 62,000 8.52 439 0.598J <0.112 46.3 <0.330 <0.0233 <0.0036 <0.0047 <0.0029 <0.0024 <0.060 <0.026 <0.0029 <0.0075 <0.0059 <0.0046 <0.0033 <0.17
SB-2-2.5-5 08/02/2023 2.5-5 1.46 24.4 <0.107 6.52 25.2 26,000 8.64 446 0.445J <0.108 18.1J <0.318 <0.0224 <0.0034 <0.0045 <0.0028 <0.0023 <0.057 <0.024 <0.0028 <0..0072 <0.0056 <0.0044 <0.0032 <0.16
SB-3-0-2.5 08/02/2023 0-2.5 1.87 21.3 <0.112 17.9 15.2 47,600 7.60 98.4 0.512J <0.113 19.7J 0.982J 0.0303J <0.0036 <0.0047 <0.0029 <0.0024 <0.060 <0.025 <0.0029 <0.0075 <0.0058 <0.0046 <0.0033 <0.17
SB-3-2.5-5 08/02/2023 2.5-5 1.74 18.1 <0.115 68.2 14.2 60,900 9.37 152 0.920J <0.116 24.6J 0.898J 0.0568 <0.0040 <0.0052 <0.0032 <0.0027 <0.066 <0.028 <0.0033 <0.0083 <0.0065 <0.0051 <0.0037 <0.17
SB-4-0-2.5 08/03/2023 0-2.5 2.45 74.9 0.202J 33.8 121 38,600 33.0 2,290 1.41J <0.116 210 3.82 <0.0242 <0.0031 <0.0041 <0.0025 <0.0021 <0.052 <0.022 <0.0026 <0.0065 <0.0051 <0.0040 <0.0029 <0.17
SB-4-2.5-5 08/03/2023 2.5-5 1.46 20.1 <0.110 50.8 54.3 52,800 6.43 473 0.463J <0.111 31.4J 0.172J 0.0522 <0.0039 <0.0052 <0.0032 <0.0027 <0.066 <0.028 <0.0032 <0.0082 <0.0064 <0.0050 <0.0036 <0.17
SB-5-0-2.5 08/02/2023 0-2.5 0.744J 43.8 <0.114 27.0 107 56,900 5.50 1,800 0.354J <0.116 38.2 0.165J <0.0241 <0.0037 <0.0049 <0.0030 <0.0025 <0.062 <0.027 <0.0031 <0.0078 <0.0061 <0.0048 <0.0034 <0.17
SB-5-2.5-5 08/02/2023 2.5-5 0.938J 42.8 <0.117 25.4 106 58,000 4.50 1,160 0.447J <0.119 45.9 0.221J <0.0247 <0.0043 <0.0057 <0.0035 <0.0029 <0.072 <0.031 <0.0036 <0.0091 <0.0071 <0.0056 <0.0040 <0.17
SB-6-0-2.5 08/03/2023 0-2.5 3.24 24.6 <0.107 23.5 109 41,400 27.9 587 0.569J <0.109 69.0 0.0876J <0.0226 <0.0033 <0.0044 <0.0027 <0.0022 <0.056 <0.024 <0.0027 <0.0070 <0.0055 <0.0043 <0.0031 <0.16
SB-6-2.5-5 08/03/2023 2.5-5 1.51 20.8 <0.111 22.6 54.1 60,100 6.70 277 0.590J <0.112 31.5J 0.0437J <0.0233 <0.0034 <0.0045 <0.0028 <0.0023 <0.057 <0.024 <0.0028 <0.0072 <0.0056 <0.0044 <0.0032 <0.16
SB-7-0-2.5 08/03/2023 0-2.5 17.6 26.2 <0.111 22.3 59.8 42,900 16.9 343 0.668J <0.112 43.3 0.516J <0.0233 <0.0024 <0.0032 <0.0020 <0.0017 <0.041 <0.017 <0.0020 <0.0051 <0.0040 <0.0031 <0.0023 0.31J
SB-7-2.5-5 08/03/2023 2.5-5 2.41 16.8 <0.110 32.5 29.5 45,100 7.05 221 0.740J <0.112 20.0J 0.119J <0.0232 <0.0031 <0.0040 <0.0025 <0.0021 <0.051 <0.022 <0.0025 <0.0064 <0.0050 <0.0039 <0.0028 <0.17
SB-8-0-2.5 08/03/2023 0-2.5 0.912J 21.9 <0.111 43.3 15.2 61,200 6.08 373 0.775J <0.112 37.4 0.169J 0.0303J <0.0032 <0.0042 <0.0026 <0.0022 <0.053 <0.023 <0.0026 <0.0067 <0.0052 <0.0041 <0.0030 <0.17
SB-8-2.5-5 08/03/2023 2.5-5 1.05J 19.3 <0.130 86.6 18.8 59,900 3.49 129 0.709J <0.132 25.0J 1.82 0.100 <0.0034 <0.0053 <0.0028 <0.0023 0.080J <0.025 <0.0028 <0.0072 <0.0056 <0.0044 <0.0056 <0.17
SB-9-0-2.5 08/03/2023 0-2.5 1.13J 26.8 <0.112 8.99 40.9 39,200 7.58 773 0.550J <0.113 24.0J <0.0558 <0.0236 <0.0031 <0.0041 <0.0025 <0.0021 <0.52 <0.022 <0.0026 <0.0065 <0.0051 <0.0040 <0.0029 <0.17
SB-9-2.5-5 08/03/2023 2.5-5 1.07J 30.0 <0.121 8.46 18.3 42,400 3.01 546 0.566J <0.122 17.3J <0.0619 <0.0254 <0.0033 <0.0043 <0.0027 <0.0022 <0.055 <0.024 <0.0027 <0.0069 <0.0054 <0.0042 <0.0031 <0.18
SB-10-0-2.5 08/03/2023 0-2.5 3.67 28.2 <0.110 18.7 85.8 38,200 25.5 255 0.722J <0.111 80.6 0.120J <0.0231 <0.0027 <0.0036 <0.0022 <0.0018 <0.046 <0.019 <0.0022 <0.0057 <0.0045 <0.0035 <0.0025 <0.16
SB-10-2.5-5 08/03/2023 2.5-5 7.33 19.7 <0.102 18.5 58.9 38,800 14.2 264 0.551J <0.103 34.1 0.0748J <0.0214 <0.0024 <0.0032 <0.0019 <0.0016 <0.040 <0.017 <0.0020 <0.0050 <0.0039 <0.0031 <0.0022 <0.15
SB-11-0-2.5 08/03/2023 0-2.5 1.23J 24.9 <0.127 13.0 26.6 36,500 5.07 383 0.698J <0.128 29.4J <0.379 <0.0267 <0.0043 <0.0057 <0.0035 <0.0029 <0.072 <0.031 <0.0035 <0.0090 0.031 <0.0055 <0.0040 <0.19
SB-11-2.5-5 08/03/2023 2.5-5 1.20J 42.2 <0.128 1.97J 25.2 33,500 7.81 1,140 0.794J <0.130 26.0J <0.382 <0.0270 0.0062J <0.0053 <0.0033 <0.0027 <0.067 <0.029 <0.0033 <0.0085 <0.0066 <0.0052 <0.0066 <0.19
SB-12-0-2.5 08/03/2023 0-2.5 1.43 23.4 <0.105 12.7 11.9 30,500 4.58 52.5 0.404J <0.106 11.7J 0.512J <0.0221 <0.0029 <0.0039 <0.0024 <0.0020 <0.049 <0.021 <0.0024 <0.0061 <0.0048 <0.0037 <0.0027 <0.15
SB-12-2.5-5 08/03/2023 2.5-5 0.726J 15.8 <0.103 4.84J 4.32J 20,100 4.41 40.5 0.258J <0.104 8.86J <0.306 0.0256J <0.0025 <0.0032 <0.0020 <0.0017 <0.041 <0.018 <0.0020 <0.0052 <0.0040 <0.0032 <0.0023 <0.16
SB-13-0-2.5 08/03/2023 0-2.5 1.46 15.9 <0.112 3.18J 1.09J 19,800 2.18J 78.1 0.308J <0.113 9.87J <0.334 <0.0236 <0.0029 0.0039J <0.0023 <0.0019 <0.048 0.028J <0.0023 <0.0060 <0.0047 <0.0037 <0.0026 <0.17
SB-13-2.5-5 08/03/2023 2.5-5 1.01J 22.7 <0.107 3.52J 0.826J 15,700 7.09 454 0.234J <0.108 7.78J <0.319 <0.0225 <0.0031 <0.0041 0.0040J <0.0021 <0.52 <0.022 <0.0025 <0.0065 <0.0051 <0.0039 <0.0029 <0.17
SB-14-0-2.5 08/03/2023 0-2.5 1.56 27.7 <0.113 22.0 50.2 50,100 6.55 425 0.586J <0.114 29.4J <0.337 <0.0238 <0.0039 <0.0051 0.0056J 0.0053J <0.065 0.089 <0.0032 <0.0082 <0.0064 <0.0050 <0.0036 <0.17
SB-14-2.5-5 08/03/2023 2.5-5 1.79 22.8 <0.115 19.6 24.4 47,900 7.63 196 0.484J <0.117 22.0J 0.369J 0.0297J <0.0036 <0.0048 <0.0029 <0.0025 <0.061 <0.026 <0.0030 <0.0076 <0.0060 <0.0047 <0.0034 <0.17
SB-15-0-2.5 08/03/2023 0-2.5 1.02J 15.3 <0.107 10.4 19.5 44,000 6.37 176 0.549J <0.108 36.0 <0.318 0.0379J <0.0034 <0.0045 <0.0028 <0.0023 <0.057 0.027J <0.0028 <0.0072 <0.0056 <0.0044 <0.0032 <0.16
SB-15-2.5-5 08/03/2023 2.5-5 1.76J 19.3 <0.154 5.72J 18.1 48,700 24.7 1,110 0.660J <0.156 39.9J <0.459 <0.0324 <0.0031 <0.0040 <0.0025 <0.0021 <0.051 <0.022 <0.0025 <0.0064 <0.0050 <0.0039 <0.0028 <0.16
SB-16-0-2.5 08/03/2023 0-2.5 1.05J 25.9 <0.118 7.12 16.7 30,400 2.73J 25.2 0.260J <0.119 10.8J <0.351 <0.0248 <0.0028 <0.0037 <0.0022 <0.0019 <0.046 <0.0020 <0.0023 <0.0058 <0.0046 <0.0036 <0.0026 <0.17
SB-16-2.5-5 08/03/2023 2.5-5 0.826J 22.7 <0.120 5.06J 14.9 33,000 4.95 65.6 0.368J <0.121 8.98J <0.358 <0.0252 <0.0030 <0.0039 <0.0024 <0.0020 <0.050 <0.021 <0.0025 <0.0063 <0.0049 <0.0038 0.0052J <0.17
SB-17-0-2.5 08/03/2023 0-2.5 1.89 28.6 <0.113 22.6 19.4 52,200 6.64 130 0.630J <0.114 25.7J <0.336 <0.0237 <0.0030 <0.0039 <0.0024 <0.0020 <0.0050 <0.021 <0.0025 <0.0063 <0.0049 <0.0038 <0.0028 <0.16
SB-17-2.5-5 08/03/2023 2.5-5 1.34 30.9 <0.110 11.1 5.52J 38,000 4.95 847 0.884J <0.111 29.2J <0.328 <0.0231 <0.0033 <0.0043 <0.0026 <0.0022 <0.055 <0.023 <0.0027 <0.0069 <0.0054 <0.0042 <0.0030 <0.17
SB-18-0-2.5 08/03/2023 0-2.5 2.02 41.7 <0.112 26.6 84.3 59,300 6.11 500 0.905J <0.113 61.4 <0.334 <0.0235 <0.0034 <0.0045 <0.0028 <0.0023 <0.057 0.065 <0.0028 <0.0072 <0.0056 <0.0044 <0.0032 <0.18
SB-18-2.5-5 08/03/2023 2.5-5 1.71 30.3 <0.125 27.9 90.5 62,800 2.81J 313 0.564J <0.127 21.1J <0.373 <0.0263 <0.0040 <0.0052 <0.0032 <0.0027 <0.067 0.047 <0.0033 <0.0083 <0.0065 <0.0051 <0.0037 <0.18
SB-DUP1 08/03/2023 0-2.5 0.761J 49.7 <0.115 31.6 113 56,200 5.94 1,820 0.331J <0.116 38.5 0.540J <0.0242 <0.0052 <0.0068 <0.0042 <0.0035 <0.087 <0.037 <0.0043 <0.011 <0.0085 <0.0067 <0.0048 <0.17
SB-DUP2 08/03/2023 2.5-5 1.41 18.6 <0.116 59.6 10.9 50,400 7.83 163 1.01J <0.117 20.3J <0.346 <0.0244 <0.0034 <0.0044 <0.0027 <0.0023 <0.056 <0.024 <0.0028 <0.0070 <0.0055 <0.0043 <0.0031 <0.17
SS-1 08/03/2023 0-1 2.18 39.1 0.266J 28.0 338 36,100 125 1,260 0.773J 0.145J 384 0.581J <0.0244 <0.0041 <0.0055 <0.0033 <0.0028 <0.069 <0.030 0.013 0.0094J <0.0068 <0.0053 <0.0038 <0.19
SS-2 08/03/2023 0-1 1.89 30.8 0.219J 20.6 376 31,300 142 1,170 0.586J 0.146J 291 0.507J <0.0250 <0.0041 <0.0054 <0.0033 <0.0028 <0.069 <0.029 0.011 <0.0086 <0.0068 0.011J <0.0038 <0.19
B-32A1 12/13/2023 2.5-3.5 N/A N/A N/A N/A 23,400 N/A 1,780 N/A N/A N/A 10,600 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
B-32A2 12/13/2023 3.5-4.5 N/A N/A N/A N/A 194 N/A 41.0 N/A N/A N/A 197 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
B-32D 12/13/2023 3.2-3.7 N/A N/A N/A N/A 12,800 N/A 971 N/A N/A N/A 6,240 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
B-32E1 12/13/2023 2.2-3.2 N/A N/A N/A N/A 5.06 J N/A 8.50 N/A N/A N/A 4.64 J N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
B-32E2 12/13/2023 4-5 N/A N/A N/A N/A 4.55 J N/A 3.45 N/A N/A N/A 3.79 J N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
B-32DUP 12/13/2023 2.5-3.5 N/A N/A N/A N/A 16,800 N/A 1,260 N/A N/A N/A 7,140 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
NS = No Standard Established
ft. BGS = feet below ground surface PSRG = NCDEQ Preliminary Soil Remediation Goal
mg/kg = milligrams per kilogram <VALUE = concentraiton below reporting limit
SB-DUP1 is a duplicate of sample SB-5-0-2.5 VALUE = concentration greater than Industrial/Commercial PSRG
SB-DUP-2 is a duplicate of sample SB-14-2.5-5 VALUE = concentration greater than Protection of Groundwater PSRG
NOTES:
VOCs by EPA 8260D
Sample ID
Constituent of Concern
Soil to Groundwater PSRG
Industrial/Commercial PSRG
Analytical Method RCRA Metals by EPA Method 6020
Summary of Soil and Sediment Analytical Results
Conbraco Brownfields Site
1640 Matthews Township Parkway
Matthews, Mecklenburg County, NC
NCDEQ Brownfields Project No.: 08039-04-60
ECS Project No. 49:20027-B
EPA 200.7
Constituent
of Concern
Hardness,
Total(SM
2340B)
Arsenic,
Dissolved
Arsenic, Lab
Filtered
(Dissolved)
Arsenic Barium,
Dissolved
Barium, Lab
Filtered
(Dissolved)
Barium Chromium,
Dissolved
Chromium,
Lab Filtered
(Dissolved)
Chromium Copper,
Dissolved
Copper, Lab
Filtered
(Dissolved)
Copper Iron,
Dissolved
Iron, Lab
Filtered
(Dissolved)
Iron Lead,
Dissolved
Lead, Lab
Filtered
(Dissolved)
Lead Manganese,
Dissolved
Manganese,
Lab Filtered
(Dissolved)
Manganese Selenium,
Dissolved
Selenium,
Lab Filtered
(Dissolved)
Selenium Zinc,
Dissolved
Zinc, Lab
Filtered
(Dissolved)
Zinc
Date
Collected
(mm/dd/yy)
ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L
N/A 10 10 10 700 700 700 10 10 10 1,000 1,000 1,000 300 300 300 15 15 15 50 50 50 20 20 20 1,000 1,000 1,000
N/A Not Volatile Not Volatile Not Volatile Not Volatile Not Volatile Not Volatile NS NS NS NS NS NS NS NS NS Not Volatile Not Volatile Not Volatile Not Volatile Not Volatile Not Volatile Not Volatile Not Volatile Not Volatile Not Volatile Not Volatile Not Volatile
100,000 150 150 NA NA NA 1000*11**11**NA 215.24^215.24^NA NS NS NS 90.29^90.29^NA NS NS NS NS NS 5 2741.89^2741.89^NS
TW-1 08/07/2023 N/A <3.7 N/A <3.7 20.3 N/A 20.6 <1.1 N/A <1.1 1.1J N/A 1.3J <29.6 N/A 36.7J <0.12 N/A <0.12 49.1 N/A 49.3 <1.4 N/A <1.4 8.1J N/A <7.0
TW-2 08/07/2023 N/A <3.7 N/A <3.7 51.1 N/A 50.8 <1.1 N/A <1.1 3.7J N/A 4.5J <29.6 N/A 250 <0.12 N/A 0.26J 99.6 N/A 159 <1.4 N/A <1.4 20.0 N/A 16.7
TW-3 08/07/2023 N/A <3.7 N/A <3.7 30.8 N/A 41.6 <1.1 N/A <1.1 1.8J N/A 4.4J <29.6 N/A 366 <0.12 N/A 0.44J 71.4 N/A 116 <1.4 N/A <1.4 10.8 N/A 12.3
TW-4 08/07/2023 N/A <3.7 7.8J <3.7 15.7 29.2 11.5 3.0J 3.2 J <1.1 21.3 53.7 11.7 5,700 8,680 1,790 3.3 6.8 2.0 132 50.8 81.1 <1.4 2.8J <1.4 26.5 91.0 20.6
TW-5 08/07/2023 N/A <3.7 N/A <3.7 17.6 N/A 20.7 1.7J N/A 1.5J 5.5 N/A 6.4 1,490 N/A 1,150 <0.12 N/A <0.12 55.6 N/A 81.5 <1.4 N/A <1.4 23.9 N/A 18.0
TW-6 08/07/2023 N/A <3.7 <3.7 <3.7 23.5 10.7 22.2 4.0J 1.6 J 3.3J 35.5 1.3 J 25.3 6,180 <29.6 5,590 6.9 <0.12 4.3 130 66.2 147 <1.4 <1.4 <1.4 51.2 21.3 38.8
TW-DUP 08/07/2023 N/A <3.7 N/A <3.7 14.6 N/A 17.1 <1.1 N/A <1.1 1.9J N/A 3.8J 127 N/A 597 <0.12 N/A <0.12 45.1 N/A 70.7 <1.4 N/A <1.4 13.9 N/A 11.5
EQUIP-1 08/07/2023 N/A <3.7 N/A <3.7 <0.67 N/A <0.67 <1.1 N/A <1.1 <1.0 N/A <1.0 <29.6 N/A <29.6 <0.12 N/A <0.12 <1.1 N/A <1.1 <1.4 N/A <1.4 <7.0 N/A <7.0
TRIP BLANK 08/07/2023 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A <1.4 N/A <1.4 N/A N/A N/A
SW-1 08/07/2023 4130 <3.7 N/A <3.7 2.6J N/A 3.7J <1.1 N/A <1.1 84.2 N/A 39.0 355 N/A 1,100 5.8 N/A 5.1 39.7 N/A 98.7 <1.4 N/A <1.4 38.1 N/A 55.8
SW-DUP 08/07/2023 1310J <3.7 N/A <3.7 0.95J N/A 3.2J <1.1 N/A <1.1 9.4 N/A 32.5 311 N/A 1,110 1.0J N/A 3.8 25.9 N/A 92.2 <1.4 N/A <1.4 14.8 N/A 49.7
Constituent
of Concern
2-Butanone
(MEK)2-Hexanone Acetone Trichloroeth
ene
cis-1,2-
Dichloroethe
ne
4-
Bromopheny
lphenyl
ether
Diethylphtha
late
Date
Collected
(mm/dd/yy)
ug/L ug/L ug/L ug/L ug/L ug/L ug/L
4,000 40 6,000 3 70 NS 6,000
1,900,000 2,600 NS 4.4 210 NS NS
NS NS NS 2.5*NS NS NS
TW-1 08/07/2023 <4.0 <0.48 <5.1 <0.38 <0.38 <1.5 <1.7
TW-2 08/07/2023 <4.0 0.53J <5.1 <0.38 <0.38 <1.5 <1.7
TW-3 08/07/2023 <4.0 <0.48 <5.1 <0.38 <0.38 <1.5 3.5J
TW-4 08/07/2023 14.7 <0.48 32.3 <0.38 <0.38 <1.8 <2.0
TW-5 08/07/2023 <4.0 <0.41 <5.1 4.6 <0.38 <1.5 2.0J
TW-6 08/07/2023 <4.0 <0.48 <5.1 7.0 5.6 <1.5 4.4J
TW-DUP 08/07/2023 <4.0 <0.48 <5.1 4.6 <0.38 <1.5 1.8J
EQUIP-1 08/07/2023 <4.0 <0.48 9.1J <0.38 <0.38 3.1J <1.7
TRIP BLANK 08/07/2023 <4.0 <0.48 8.9J <0.38 <0.38 N/A N/A
SW-1 08/07/2023 <4.0 <0.48 6.9J <0.38 <0.38 <1.5 <1.7
SW-DUP 08/07/2023 <4.0 <0.48 6.5J <0.38 <0.38 <1.5 <1.7
NS = No Standard Established
N/A = Not Applicable
TW-DUP is a duplicate of sample TW-5
NC2LGWQS = North Carolina 2L Groundwater Quality Standards
NC2BSWQS = North Carolina 2B Surface Water Quality Standards for Freshwater All Waters (Class C)
* = Freshwater Class C Standard not available, substituted Freshwater Class WS (I-V) standard
** = Chromium IV Freshwater Class C Standard used
^ = Hardness-Dependent Metal Calculation
<VALUE = concentraiton below reporting limit
VALUE = concentration greater than Non-Residential VISL
VALUE = concentration greater than NC2LGWQS
VALUE =concentration greater than NCAC 02B Standards
NCAC 02B Standard
Sample ID
Non-Residential VISL
NCAC 02B Standard
Analytical Method EPA Method 6020
Sample ID
NC2LGWQS
Non-Residential VISL
Summary of Groundwater and Surface Water Analytical Results
Conbraco Brownfields Site
1640 Matthews Township Parkway
NCDEQ Brownfields Project No.: 08039-04-60
ECS Project No.: 20027-B
NOTES:
ug/L = micrograms per liter
mg/L = milligrams per liter
NC2LGWQS
Analytical Method EPA Method 8260 EPA Method 8270
Summary of Soil Analytical Results - Collected by CDG, Inc. (2021)*
Conbraco Brownfields Site
1640 Matthews Township Parkway
Matthews, Mecklenburg County, NC
NCDEQ Brownfields Project No.: 08039-04-60
ECS Project No. 49:20027-B
CopperIronLeadZincDate
Collected
(mm/dd/yy)
Sample
Depth
(ft. BGS)
mg/kg mg/kg mg/kg mg/kg
9,300 16,000 800 70,000
700 150 270 1,200
5.9 - 115 14300 -
78800 3.4 - 26.8 13.2 - 107
B-31 0-1'2/4/2021 0-1 50.8 48,200 21.8 72.0
B-31 2-3'2/4/2021 2-3 19.5 36,600 7.8 18.2
B-31 4-5'2/4/2021 4-5 12.9 30,800 7.1 9.4
Dup-3 (B-31 4-5')2/4/2021 4-5 12.4 30,000 7.0 9.3
B32 0-1'2/4/2021 0-1 197 39,200 43.4 198
B32 3-4'2/4/2021 3-4 16,500 10,100 1,300 7,820
B32 4-5'2/4/2021 4-5 825 35,300 311 1110
B-88 0-1'3/25/2021 0-1 149 50,800 33.2 142
B-88 1-2'3/25/2021 1-2 441 45,600 67.0 293
B-88 3-4'3/25/2021 3-4 405 40,200 120 318
Dup-3 (B-88 3-4')3/25/2021 3-4 127 57,600 27.6 80.6
B-89 0-1'3/25/2021 0-1 133 48,600 31.2 106
DUP-1 (B-89 0-1')5/14/2021 0-1 127 50,000 26.1 79.3
B-89 1-3'5/14/2021 1-3 80.0 52,200 17.4 34.4
B-89 4-5'5/14/2021 4-5 27.5 47,400 6.3 21.3
B-90 0-1'5/14/2021 0-1 79.5 73,300 13.6 29.1
B-90 2-3'5/14/2021 2-3 99 65,700 8.8 26.2
B-90 3-4'5/14/2021 3-4 104 67,500 5.7 31.7
NOTES:
NS = No Standard Established
ft. BGS = feet below ground surface
mg/kg = milligrams per kilogram
PSRG = NCDEQ Preliminary Soil Remediation Goal
<VALUE = concentraiton below reporting limit
VALUE = concentration greater than Industrial/Commercial PSRG
VALUE = concentration greater than Protection of Groundwater PSRG
Background Range
= concentration greater than Background Range (per Draft RFI WorkPlan - Former
Conbraco Industries - Matthews, NC by CDG, Inc. dated March 3, 2023VALUE
*Results taken from: DRAFT RFI WORKPLAN FORMER CONBRACO INDUSTRIES - MATTHEWS, NC prepared by CDG,
Inc. for Aalberts integrated piping systems Americas, Inc. dated March 3, 2023 (only those samples collected on the
subject property are listed above)
Analytical Method EPA Method 6020
Sample ID
Constituent of Concern
Industrial/Commercial PSRG
Soil to Groundwater PSRG