21007_Hoke Street_EMP_20180815

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NORTH CAROLINA BROWNFIELDS PROGRAM
ENVIRONMENTAL MANAGEMENT PLAN

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

The EMP is a typical requirement of a Brownfields Agreement (BFA). Its purpose is to clarify
actions to be taken during the 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 resultant EMP to be valid for use, it
must be completed, reviewed by the program, 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 completed agreement, be
cause for a reopener

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 these steps is premature.

☐ 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.

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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
on site 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 importation to the Brownfields Property.

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

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

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

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GENERAL INFORMATION

Date: 8/14/2018 Revision Date (if applicable): Click or tap to enter a date.

Brownfields Assigned Project Name: Hoke Street Passage Home

Brownfields Project Number: 21007-17-092

Brownfields Property Address: 500, 506 Hoke St and 1412 Garner Rd

Brownfields Property Area (acres): 3.4
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. NOTE, THE EMP
DOES NOT TAKE THE PLACE OF A SITE-SPECIFIC HEALTH AND SAFETY PLAN.

Prospective Developer (PD): Hoke Street PH Redevelopment LLC
Contact Person: Steve Vebber
Phone Numbers: Office: Click or tap here to enter text. Mobile: [phone]
Email: [e-mail]

Contractor for PD: Click or tap here to enter text.
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: Aptus Mgmt, PLLC
Contact Person: John Gallagher
Phone Numbers: Office: Click or tap here to enter text. Mobile: [phone]
Email: [e-mail]

Brownfields Program Project Manager: Sarah Hardison Young
Phone Numbers: Office: 919.707.8382 Mobile: Click or tap here to enter text.
Email: Hardison, Sarah <[e-mail]>

Other DEQ Program Contacts (if applicable, i.e., UST Section, Inactive Hazardous Site Branch,

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Hazardous Waste, Solid Waste):
Click or tap here to enter text.

NOTIFICATIONS TO THE BROWNFIELDS PROGRAM

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

1) Type of Redevelopment (check all that apply):
☒Residential ☒Recreational ☒Institutional ☒Commercial ☒Office ☒Retail ☐Industrial
☒Other specify:
School, Childcare, senior care, mixed use and urban gardening

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:
The main purpose of this EMP is to provide information for the planned interim use of a portion

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of the site for urban gardening, and development of a community center in the existing onsite
building along with parking.

With respect to the urban gardening, it will consist of a green house, urban ag building, raised
planting beds and a series of hoop houses. Gardening and produce production will not occur in
native soil – instead it will be done in raised planting beds with imported clean soil and mulch.
This will occur in the 0.8-acre central portion of the 1412 Garner Road parcel (No. 1703920658).
Also, the 0.54-acre lot with street address 506 Hoke Street (No. 1703920846) located to the
north of the gardening area that will be used to enter and exit the gardening area (see attached)

The work to create the urban gardening area will be simple and straightforward. It will include
clearing the area of some existing vegetation and small trees, building a 400 sq ft slab-on-grade
greenhouse and 1500 sq ft slab-on-grade urban ag building, constructing raised planting beds
and hoop houses. The work will entail minimal ground disturbance at depths of 1 to 2 feet and
no import or export of soil/fill.

Based on our assessment work showing no known soil contamination in the area where the
urban gardening will occur, we plan to use conventional development and construction methods;
however, with oversight provided by a professional engineer to manage any contingent matters,
while unlikely, that could arise.

The next phase, following the interim urban gardening, will be renovating the existing on-site
building and some exterior improvements for entry to the site and parking. This redevelopment
work may begin in early 2019. The western third of the 1412 Garner Road parcel to be improved
with a parking lot and the eastern third will, for the time being, remain vacant.

Longer term, the portion of the site used on an interim basis for the urban garden may be
redeveloped with multifamily residential. When that occurs, the EMP would be revisited and a
revised updated plan would be submitted for NCDEQ review and approval.

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?
☐ Yes ☒ No ☐ Unknown
☐ If yes, please check here to confirm that demolition 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.

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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.
☒ Residential ☐ Non-Residential or Industrial/Commercial

7) Schedule for Redevelopment (attach construction schedule):
a) Construction start date: We would like to begin interim use of a portion of the site for urban
gardening immediately and renovations of the onsite building (see attached concept plan) and
creating the paved parking behind the building may occur in early 2019.

b) Anticipated duration (specify activities during each phase):
Urban gardening will be conducted for the foreseeable future. Repurposing the building and
the parking would take about 6-9 months

c) Additional phases planned? ☐ Yes ☐ No
If yes, specify the start date and/or activities if known:
Start Date: 9/1/2019
Planned Activity:
The use of the site for urban gardening may be an interim use. Parcel 1703920846 and a
portion of Parcel 1703920658 may be redeveloped in the future for mixed use and/or
multifamily residential. If that occurs, a revised EMP would be prepared for NCDEQ review
and approval.

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: 1/1/2020

CONTAMINATED MEDIA

1) Contaminated Media on the Brownfields Property
Part 1. Soil:……………………………………….……………. ☐ Yes ☐ No ☒ Suspected
Part 2. Groundwater:.……………………….……..……. ☒ Yes ☐ No ☐ Suspected
Part 3. Surface Water:.……………...……..…………… ☐ Yes ☒ No ☐ Suspected
Part 4. Sediment:.……………...……..…………………… ☐ Yes ☒ No ☐ Suspected
Part 5. Soil Vapor:…..…………...……..…………………. ☒ Yes ☐ No ☐ Suspected
Part 6. Sub-Slab Soil Vapor:……...……..…………….. ☒ Yes ☐ No ☐ Suspected

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Part 7. Indoor Air:...……..…………………………………. ☒ Yes ☐ No ☐ Suspected

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 – Please fill out the information 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) Known or suspected contaminants in soil (list general groups of contaminants):
No contamination was found in soil above IHSB PSRGs in the assessment work conducted by the
PD. However, there is some potential for soil contamination to exist particularly in the southern
portion of the site directly behind the on-site building where past waste management activities
occurred. However, this portion of the site will be paved and used as a parking lot, effectively
capping the entire area.
2) Depth of known or suspected contaminants (feet):
None known
3) Area of soil disturbed by redevelopment (square feet):
43500 sq ft (one acre)

4) Depths of soil to be excavated (feet):
Little to no excavation

5) Estimated volume of soil (cubic yards) to be excavated (attach grading plan):
No grading is planned

6) Estimated volume of excavated soil (cubic yards) anticipated to be impacted by contaminants:
None

7) Estimated volume of contaminated soil expected to be disposed of offsite, if applicable:
Click or tap here to enter text.

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

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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 ON SITE 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)
Click or tap here to enter text.

☒ If no, explain rationale:
No identified soil contamination.

d) NOTE: IF SOIL MEETS THE DEFINITION OF A CHARACTERISTIC HAZARDOUS WASTE, THE
SOIL MAY NOT BE RE-USED ON SITE 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.

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Currently, no identified soil contamination above PSRGs.

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 on site 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.
☒ Manage soil under impervious cap ☒ or clean fill ☒
☒ Describe cap or fill:
The current redevelopment plans call for the area immediately behind the on-site building
to the south to be paved and used as a parking lot. Other areas of the site have not shown
contamination above residential guideline levels.
☒ 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:
Management of fugitive dust from site
☐ Yes, describe the method will include:
Click or tap here to enter text.

☒ No, explain rationale:
The planned redevelopment will not involve mass grading or other activities that will
generate appreciable fugitive dust. To the extent dust control measures are implemented,
they will be in accordance with general construction standards and could include
suppression by low-volume water application and other means.

Field Screening of site soil
☒ Yes, describe the field screening method, frequency of field screening, person conducting
field screening:
Click or tap here to enter text.

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Currently, there is no known contaminated soil. The PD and their contractors will observe
for indications of contamination (olfactory, staining, etc.) during site work and
redevelopment. Indications of contamination will be reported to the professional engineer
or geologist.
Also, at the start of work and on a weekly basis thereafter during development of the
urban gardening area, a site inspection will be conducted by the consultant professional
engineer or geologist. If field evidence of contamination is encountered, site work will
stop, and the situation will be evaluated by the consultant professional engineer or
geologist.

Redevelopment of the onsite building will not entail subsurface work. Field screening and
other actions would be implemented on a contingent basis if needed.

☐ No, explain rationale:
Click or tap here to enter text.

Soil Sample Collection
☒ Yes, describe the sampling method (e.g., in-situ grab, composite, stockpile, etc.):
As needed on a contingent basis to meet disposal requirements and to evaluate potential
risks and response measures (see the contingency planning section of this plan).

☐ No, explain rationale:
Click or tap here to enter text.

If soil samples are collected for analysis, please check the applicable chemical analytes:
☒ Volatile organic compounds (VOCs) by EPA Method 8260
☒ Semi-volatile organic compounds (SVOCs) by EPA Method 8270
☒ Metals RCRA List (8) (arsenic, barium, cadmium, chromium, mercury, lead, selenium
and silver): Specify Analytical Method Number(s):
Method 6020 and Method 7471 for mercury
☒ Pesticides: Specify Analytical Method Number(s): If needed
☒ PCBs: Specify Analytical Method Number(s): If needed
☒ Other Constituents & Respective Analytical Method(s) (i.e. Hexavalent Chromium, Herbicides, etc.): Specify Analytical Method Number(s): If needed

☒ 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

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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):
☒ Volatile organic compounds (VOCs) by EPA Method 8260
☒ Semi-volatile organic compounds (SVOCs) by EPA Method 8270
☒ Metals RCRA List (8) (arsenic, barium, cadmium, chromium, mercury, lead, selenium and silver): Specify Analytical Method Number(s): Method 6020 and Method 7471 for mercury
☒ Pesticides: Specify Analytical Method Number(s): Method 8081
☐ PCBs: Specify Analytical Method Number(s): Click or tap here to enter text.
☒ Other Constituents & Respective Analytical Method(s) (i.e. Hexavalent Chromium, Herbicides, etc.): Herbicides – Method 8115

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, a work plan for
final grade sampling may be submitted under separate cover.
We conducted at-grade soil sampling in the area to be used for the interim urban garden.
We found no contamination by VOCs, SVOCs, RCRA metals, herbicides or pesticides which
would pose an unacceptable risk, or which were measured above the residential IHSB
Preliminary Soil Remediation Goals (PSRGs) (Surficial Soil Testing Report, Aptus, May 31,
2018). (Naturally occurring arsenic was measure above its PSRG.)

Earlier Phase II site assessment work (Limited Phase II Environmental Site Assessment, PES,
Nov. 1, 2016) that included 18 soil samples collected to the south of the existing onsite
building showed no extractable and volatile petroleum hydrocarbons in soil, and no VOCs,
SVOCs, chromium, lead and pesticides and PCBs exceeding their respective PSRGs. (One
pesticide, beta-BHC, was measured at a J-value of 0.0015 mg/kg which was slightly above
the soil-to-groundwater PSRG of 0.0012 mg/kg, but well below the direct contact
residential PSRG of 0.30 mg/kg).

Note -- we have no known contaminated soil

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Based on future detailed development plans and the location of final improvements,
impervious surfaces and any remaining open space, a detailed plan for soil sampling will be
prepared and submitted.

☐ 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 PROGRAM. 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 Program), 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:

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?
Currently there are no plans to import fill. Top soil and mulch will be imported for the raised beds
used in the urban gardening. The PD does not plan to collect samples of landscaping materials
from a commercially available vendor prior to placement at the Brownfields Property. DEQ
Brownfields will be notified of the volume of landscaping material needed and the proposed
source of the material prior to placement in proposed landscaping areas. This information will be
included in the Redevelopment Summary.

3) If yes, what is the anticipated depth that fill soil will be placed at the property? (If a range
of depths, please list the range.)
Attached is a figure showing the locations of the greenhouse, shed and raised beds. The raised
beds will have 1-2 feet of mulch and soil.

4) Provide the source of fill, including: location, site history, nearby environmental concerns, etc. Attach aerial photos, maps, historic Sanborn maps and a borrow source site history:
Click or tap here to enter text.

5) PRIOR TO ITS PLACEMENT AT THE BROWNFIELDS PROPERTY, provide a plan to analyze fill
soil to demonstrate that it meets acceptable standards applicable to the site and can be
approved for use at the Brownfields property.
Click or tap here to enter text.

6) Please check the applicable chemical analytes for fill soil samples. (Check all that apply):

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☐ Volatile organic compounds (VOCs) by EPA Method 8260
☐ Semi-volatile organic compounds (SVOCs) by EPA Method 8270
☐ Metals RCRA List (8) (arsenic, barium, cadmium, chromium, mercury, lead, selenium and silver): Specify Analytical Method Number(s): Click or tap here to enter text.
☐ 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) (i.e. Hexavalent Chromium, Herbicides, etc.): Click or tap here to enter text.

7) The scope of work for import fill sampling may be provided below or in a Work Plan
submitted separately for DEQ review and approval. Attach specific location maps for in-situ
borrow sites. If using a quarry, provide information on the type of material to be brought
onto the Brownfields Property.
Click or tap here to enter text.

Part 1.C. EXPORTED SOIL

NO SOIL MAY LEAVE THE BROWNFIELDS PROPERTY WITHOUT APPROVAL FROM THE
BROWNFIELDS PROGRAM. FAILURE TO OBTAIN APPROVAL MAY VIOLATE A BROWNFIELDS
AGREEMENT CAUSING A REOPENER OR JEOPARDIZING ELIGIBILITY IN THE PROGRAM,
ENDANGERING LIABILITY PROTECTIONS AND MAKING SAID ACTION POSSIBLY SUBJECT TO
ENFORCEMENT. JUSTIFICATIONS PROVIDED BELOW MUST BE APPROVED BY THE PROGRAM IN
WRITING PRIOR TO COMPLETING TRANSPORT ACTIVITIES. Please refer to Brownfields IR 15 for
additional details.

1) If export from a Brownfields Property is anticipated, please provide details regarding the
proposed export actions. Volume of exported soil, depths, location from which soil will
be excavated on site, related sampling results, etc. Provide a site map with locations of
export and sampling results included.
No soil export is planned

2) To what type of facility will the export Brownfields soil be sent?
☐ Subtitle D/Municipal Solid Waste Landfill (analytical program to be determined by landfill)
☐ Permitted but Unlined Landfill (i.e. LCID, C&D, etc.) Analytical program to be
determined by the accepting Landfill;
☐ Landfarm or other treatment facility

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☐ Use as fill at another suitable Brownfields Property – determination that a
site is suitable will require, at a minimum, that similar concentrations of the same or
similar contaminants already exist at both sites, use of impacted soil will not increase
the potential for risk to human health and the environment at the receiving Brownfields
property, and that a record of the acceptance of such soil from the property owner of
the receiving site is provided to Brownfields. Please provide additional details below.
☐ Use as Beneficial Fill off-site at a non-Brownfields Property - Please provide
documentation of approval from the property owner for receipt of fill material. This will
also require approval by the DEQ Solid Waste Section. Additional information is
provided in IR 15. Please provide additional details below.

3) Additional Details: (if transfer of soil to another property is requested above, please provide
details related to the proposed plans).
Click or tap here to enter text.

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:
Click or tap here to enter text.

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

Other comments regarding managing impacted soil in utility trenches:
There are no current plans for utility trenches. And there is no known soil contamination. If, based on
final development plans, new utility trenches are to be installed, the designers will consult with the
project environmental consultant and the contingency procedures provided with this plan will be
followed. The BF program will be notified, and final plans will be provided for any utility trenching
prior to installation.

PART 2. GROUNDWATER – Please fill out the information below.

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1) What is the depth to groundwater at the Brownfields Property?
25 ft
2) Is groundwater known to be contaminated by ☒onsite ☒offsite ☐both or ☐unknown
sources? Describe source(s):
Past PCE release at former Ashland Chem disposal site located to the west of the Brownfields
Property

3) What is the direction of groundwater flow at the Brownfields Property?
Southeast

4) Will groundwater likely be encountered during planned redevelopment activities?
☐Yes ☒No
If yes, describe these activities:
Click or tap here to enter text. Regardless of the answer; in the event that contaminated 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).
Site use and redevelopment will not encounter groundwater. In the extremely unlikely case
construction activities encountered groundwater and dewatering was needed, groundwater
would be containerized and pretreatment and discharge to the sanitary sewer would likely be
employed under a City of Raleigh industrial sewer use permit.

5) 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

6) 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 Program’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
☐ 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.

7) Please provide additional details as needed:
There are six permanent wells onsite installed for the assessment of the Brownfields Property. Five of
the six wells were installed to the south of the onsite building in the back-lot area where the waste

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EMP Version 2, June 2018

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 -Please fill out the information below.
1) Is surface water present at the property? ☐ Yes ☒ No
2) 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
4) Will workers or the public be in contact with surface water during planned redevelopment
activities? ☐ 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):
Click or tap here to enter text.

PART 4. SEDIMENT – Please fill out the information below.

1) Are sediment sources present on the property? ☐ Yes ☒ No

2) If yes, is sediment at the property known to be contaminated: ☐ Yes ☐ No

3) Will workers or the public be in contact with sediment during planned redevelopment
activities? ☐ Yes ☒ No

4) Attach a map showing 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):
Click or tap here to enter text.

PART 5. SOIL VAPOR – Please fill out the information below.
1) Do concentrations of volatile organic compounds at the Brownfields property exceed the following vapor intrusion screening levels (current version) in the following media:
management activities occurred. Two temporary wells were installed directly south the automobile
repair shop located at the corner of Hoke St and Garner Rd.

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EMP Version 2, June 2018
IHSB Residential Screening Levels:
Soil Vapor:………..☐ Yes ☐ No ☒ Unknown
Groundwater:.….☒ Yes ☐ No ☐ Unknown
IHSB Industrial/Commercial Screening Levels:
Soil Vapor:………..☐ Yes ☐ No ☒ Unknown
Groundwater:…..☒ Yes ☐ No ☐ Unknown
2) Attach a map showing the locations of soil vapor contaminants that exceed site
screening levels.
3) If applicable, at what depth(s) is soil vapor known to be contaminated?

4) Will workers encounter contaminated soil vapor during planned redevelopment activities?
☐ Yes ☐ No ☒ Unknown
5) In the event that contaminated soil vapor is encountered during redevelopment activities
(trenches, manways, basements or other subsurface work,) list activities for management
of such contact:
There is some but nominal chance the construction work for repurposing the onsite building
could result in soil vapor contact. Activities that involve opening the floor slab (e.g., installing
utilities) and other similar construction work will be managed in accordance with OSHA hazard
recognition and mitigation requirements. The contractors (and subcontractors) retained for
redevelopment work will be responsible for OSHA compliance.

It is unlikely that future redevelopment of the balance of the site for multifamily residential will
encounter unsafe soil vapor conditions.

PART 6. SUB-SLAB SOIL VAPOR – Please fill out the information below if existing buildings or
foundations will be retained in the redevelopment.
1) Are sub-slab soil vapor data available for the Brownfields Property? ☒ Yes ☐ No ☐ Unknown
2) If data indicate that sub-slab soil vapor concentrations exceed screening levels, attach a map
showing the location of these exceedances.
3) At what depth(s) is sub-slab soil vapor known to be contaminated? ☐0-6 inches ☒Other, please
describe:
O-1 ft

4) Will workers encounter contaminated sub-slab soil vapor during planned redevelopment
activities? ☐ Yes ☐ No ☒ Unknown
5) In the event that contaminated soil vapor is encountered during redevelopment activities, list
activities for management of such contact
PCE directly below the onsite building floor slab in the southwest quadrant of the building above
Click or tap here to enter text.

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EMP Version 2, June 2018
the ISHB residential screening level, but below the industrial commercial level. There is some but
nominal chance the work repurposing the onsite building could result in soil vapor contact.
Activities that involve opening the floor slab (e.g., installing utilities) and other similar
construction work will be managed in accordance with OSHA hazard recognition and mitigation
requirements. The contractors (and subcontractors) retained for redevelopment work will be
responsible for OSHA compliance. (See Vapor Intrusion Soil Gas Sampling Report, RDH
Environmental Consulting, January 8, 2018.

PART 7. INDOOR AIR – Please fill out the information below.

1) Are indoor air data available for the Brownfields Property? ☒ Yes ☐ No ☐ Unknown
2) 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
4) In the event that contaminated indoor air is encountered during redevelopment activities, list
activities for management of such contact:

VAPOR INTRUSION MITIGATION SYSTEM – Please fill out the information below.
Is a vapor intrusion mitigation system (VIMS) proposed for this Brownfields Property?
☐ Yes ☒ No ☐ Unknown
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
Based on the indoor air assessment work and the earlier sub-slab soil gas testing we completed, we
do not believe there is an unacceptable risk due to vapor intrusion for construction workers or future
building occupants. We found no contaminates in the indoor air in the onsite building above their
respective IASLs attributable to subsurface contamination. We did measure naphthalene above its
IASL that we believe is due to a background source. (See VAPOR INTRUSION INDOOR AIR TESTING
REPORT PASSAGE HOME SITE, Aptus, June 28, 2018.)

Redevelopment activities will be managed in accordance with OSHA hazard recognition and
mitigation requirements. The contractors (and subcontractors) retained for redevelopment work will
be responsible for OSHA compliance.

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If no, please provide a brief rationale as to why no vapor mitigation plan is warranted: The main VI concern was the possibility of PCE in the building indoor air because it was found in
the sub-slab soil gas at concentration above its guideline. PCE is also present in groundwater at
the site attributable to the historical PCE release at the nearby Ashland Chemical site.

Indoor air quality tested showed no PCE above its residential IASL. Based on this, there is no
unacceptable risk of vapor intrusion due to PCE.

However, naphthalene was measured in indoor air samples about its IASL. Its presence was
uniform in 4 of the 5 samples we collected and more elevated at location A-2 in the northwest
building quadrant. Naphthalene is a common material found in fossil fuels, asphalt, mothballs,
tobacco smoke, and a wide variety of industrial and consumer products. The presence of
naphthalene in the building’s indoor air is not believed to be associated with a subsurface
release given it was not measured at appreciable sub-slab levels – it was detected in only one
sub-slab sampling location (SS-4) at less than 18% of the SGSL. Instead, based on the weight of
evidence, the most plausible explanation for the naphthalene is one or more background
sources that could include fuel in pressure washers or motor pump oil containers stored
indoors, roofing flashing cement and asphaltic materials (there were recent roof repairs) or
other building materials.

In summary, based on indoor air quality testing and the earlier sub-slab soil gas assessment work
we completed, we do not believe there is an unacceptable risk due to vapor intrusion. Our
recommendation is that no further assessment of VI risk is required and no mitigation for VI risk
is needed associated with the repurposing of the on-site building.

CONTINGENCY PLAN – encountering unknown tanks, drums, or other waste materials

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:
☒ Volatile organic compounds (VOCs) by EPA Method 8260
☒ Semi-volatile organic compounds (SVOCs) by EPA Method 8270
☒ Metals RCRA List (8) (arsenic, barium, cadmium, chromium, mercury, lead, selenium and

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EMP Version 2, June 2018
silver)
Click or tap here to enter text.

☒ Pesticides: Specify Analytical Method Number(s):
As needed and based on what is encountered

☒ PCBs: Specify Analytical Method Number(s):
As needed and based on what is encountered

☒ Other Constituents & Analytical Method(s) (i.e. Hexavalent Chromium, Herbicides, etc.)
Please note, if field observations indicate the need for additional analyses, they should
be conducted, even if not listed here.
As needed and based on what is encountered Please provide details on the proposed methods of managing the following commonly
encountered issues during redevelopment of Brownfields Properties.

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EMP Version 2, June 2018
Contingency Planning for Unknown Tanks, Drums or Other Waste Materials

During redevelopment, if previously undiscovered contaminant sources are identified these
sources could include:

• Underground storage tanks (USTs);
• Buried drums containing unknown materials;
• Areas of buried waste materials;
• Underground fuel lines; and,
• Septic tanks, drains and associated piping.

If previously undiscovered contaminant sources are encountered, demolition and/or construction
activities in the area will be suspended. The General Contractor (GC) will immediately notify the
Environmental Consultant (EC) and the Prospective Developer (PD). The EC will investigate the
area and evaluate the waste materials and/or impacted media in these areas and determine the
proper means for managing these materials. Area evaluation may include the use of field
instrumentation, such as photoionization or flame ionization detectors. Depending upon site
conditions, confirmatory samples may be collected from the newly discovered contaminant
source area(s) for analysis. All samples will be submitted to a NCDEQ-certified analytical
laboratory for analysis. Analytical methods may include one or more of the following:

• Volatile organic compounds (VOCs), by Method 8260;
• Semi-volatile organic compounds (SVOCs), by Method 8270;
• RCRA Metals, by Methods 6010/7471;
• Pesticides, by Method 8081; • Herbicides, by Method 8151; • Polychlorinated biphenyls (PCBs), by Method 8082; • Corrosivity, by Method 111DA;
• Reactivity, by Method 9012; and/or,
• Flashpoint, by Method 1010.

The EC will contact the NCBP and provide documentation of the findings and subsequent actions
taken to manage contingencies. If the scope of work (sample number, sample location, etc.) is not
defined in this Contingency Plan or in the EMP, then a scope of work will be provided for the NCBP
review and approval prior to sampling. All samples will be submitted to an NCDEQ certified
analytical laboratory for analysis.
The EC will provide the PD, its contractor, and the NCBP copies of field-monitoring and analytical
data, with recommendations to address contaminated soil as applicable and in a manner that is
satisfactory to the Brownfields Program.

If additional USTs and/or underground fuel lines are found, the EC will confer with the PD and
notify the Brownfields Section within 48-hours of the discovery. Any newly encountered USTs
and petroleum-impacted media will be managed in accordance with the technical requirements
of the NCDEQ - UST Section and site-specific requirements developed in consultation with the
Brownfields Program.

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EMP Version 2, June 2018
Should buried drums of unknown materials be discovered at the property, the drums will be
evaluated for obvious integrity issues, labeling, etc. If it is determined that the condition of the
drums is acceptable, the drums will be removed from the area, and temporarily relocated (under
the direction of the EC representative), to a staging area in a designated location of the property
with proper secondary containment. The drums will be sampled to determine the contents and
to determine disposal options. After conferring with the PD, the EC will notify the NCDEQ -
Brownfields Section of the drum discovery within 48-hours. The EC will evaluate the soils
surrounding these features (if encountered) for staining, odor, or other evidence of impact.
Suspect Soils may be excavated and placed in covered roll-off containers pending disposal. The
EC will utilize field screening data to determine an acceptable level of soil remediation in these
areas, based on the comparison field screening data with field screening data for samples
collected from "background" (unimpacted) areas of the property. Based on field observations,
the EC may elect to collect post-excavation confirmation samples from excavated areas for
laboratory analysis (possible analytical parameters are presented above). The EC will provide the
PD and its contractor copies of field monitoring data and field notes, as well as and
recommendations to address impacted soils.

Should buried waste materials be discovered at the property, the waste material will be
evaluated to characterize the nature of the waste material. After conferring with the PD, the EC
will notify the NCDEQ - Brownfields Section of the buried waste discovery within 48-hours. The EC
will evaluate the soils surrounding these features (if encountered) for staining, odor, or other
evidence of impact. Suspect Soils may be excavated and placed in covered roll-off containers
pending disposal. The EC will utilize field screening data to determine an acceptable level of soil
remediation of performed) in these areas, based on the comparison field screening data with
field screening data for samples collected from "background" (unimpacted) areas of the property.
Based on field observations, the EC may elect to collect post-excavation confirmation samples
from excavated areas for laboratory analysis (possible analytical parameters are presented
above). The EC will provide the PD and its contractor copies of field monitoring data and field
notes, as well as and recommendations to address impacted soils.

Should suspected septic drains and associated piping be encountered, the EC will confer with the
PD, and then notify the Wake County Environmental Health Department and the NCDEQ -
Brownfields Section regarding the discovery within 48-hours. The septic systems will be properly
decommissioned and abandoned per Wake County Environmental Health Regulations. All piping
and/or holding tanks will be removed and properly disposed. The EC will evaluate the soils
surrounding these features (if encountered) for staining, odor, or other evidence of impact. Suspect
Soils may be excavated and placed in covered roll-off containers pending disposal. The EC will utilize
field screening data to determine an acceptable level of soil remediation in these areas, based on
the comparison field screening data with field screening data for samples collected from
"background" (unimpacted) areas of the property. Based on field observations, the EC may elect to
collect post-excavation confirmation samples from excavated areas for laboratory analysis (possible
analytical parameters are presented above). The EC will provide the PD and its contractor copies of
field monitoring data and field notes, as well as and recommendations to address impacted soils.

Underground Storage Tanks:

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EMP Version 2, June 2018
See above

Sub-Grade Feature/Pit:
See above

Buried Waste Material:
See above

Re-Use of Impacted Soils On-Site:
None is planned

If unknown, impacted soil is identified on-site, management on-site 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 on-site.

If other potential contingency plans are pertinent, please provide other details or scenarios as
needed below:
See above

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 Click or tap to enter a date.

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,

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EMP Version 2, June 2018
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.

Aptus Management, PLLC
FIGURES AND TABLES

Figure 1 – Site Location Map Source: USGS 7.5 Minute Topographic Map South Raleigh, North Carolina Quadrangle 2013 Scale: 1:24,000

Site Name: McKnitt & Associates Site 500 & 506 Hoke Street Raleigh, North Carolina PES Project Number: R16-161

Future Mixed Use and/or Multifamily Residential
Community Center
Parking
DisclaimeriMaps makes every effort to produce and publish the most current and accurate information possible.However, the maps are produced for information purposes,and are NOT surveys. No warranties, expressed or implied,are provided for the data therein, its use,or its interpretation.
Passge Home Hoke St Redevelopment 0 110 22055 ft
1 inch = 100 feet±
URBAN AG.BUILDING30' X 50'
1500 SF
GREENHOUSE20' X 40'800 SF
OFFICE1233 sq ft
CLASSROOM642 sq ftCOMPUTER LAB642 sq ft CLASSROOM642 sq ft
EVENT SPACE3425 sq ft
MEETING ROOM201 sq ft
RESTROOM240 sq ft
RESTROOM240 sq ft
CULINARY CLASSROOM750 sq ft
BREAKROOM244 sq ft
STORAGE 1264 sq ft
SERVICE MECH246 sq ft
LARGE MEETING ROOM359 sq ft MEETING ROOM201 sq ft
OFFICE (LEASEABLE)1403 sq ft
LOBBY412 sq ft
OFFICE131 sq ft
INSTRUCTOR OFFICE308 sq ft
DIAGRAM 10
HOTELING SPACE273 sq ftOFFICE146 sq ft
OFFICE141 sq ft RESOURCE ROOM120 sq ft
CLASSROOM642 sq ft
SITE PARKING STUDY - REAR
Scale: 1/32" = 1'-0"2
PARKING STUDY - REAR
-drop off loop
-rear parking (46)
Urban Garden Area

Figure 6 – Monitoring Well Location Map Source: 2016 Google Satellite Photograph Scale: 1’ = 55’

Site Name: McKnitt & Associates Site
500 & 506 Hoke Street Raleigh, North Carolina PES Project Number: R16-161

MW-1
MW-2 MW-3
MW-4
MW-5
MW-6
VOCs by Method 8260B (ug/L)
Acetone 6000 ND ND ND ND ND ND 7.5 J ND
1,1-Dichloroethylene 350 ND ND 1.1 2.3 ND ND ND ND
Ethanol NS ND ND ND ND ND ND 160 J ND
Tetrachloroethylene 0.7 0.73 ND 8.0 37.0 0.58 ND ND ND
1,1,1-Trichloroethane 200 ND ND ND ND ND ND ND ND
Carbon Tetrachloride 0.3 ND ND ND 2.5 ND ND ND ND
Chloroform 70 ND ND ND 0.93 ND 0.52 ND ND
Trichloroethylene 3 ND ND ND 6.0 ND ND ND ND
Volatile Petroleum Hydrocarbons (ug/L)
C5-C8 Aliphatics 400 NA NA ND 11 J ND NA NA NA
C9-C12 Aliphatics 700 NA NA 14 J ND 15 J NA NA NA
Metals by 6010D (mg/L)
Chromium 10 NA NA 0.019 0.029 0.022 NA NA NA
Lead 15 NA NA 0.019 0.018 0.084 NA NA NA
NOTES:
µg/L - micrograms per liter (ppb)
ND - Constituent not detected in excess of laboratory detection limits
Bolded concentrations denote NCAC 2L groundwater standard exceedance.
2L Standard
(ug/L)MW-1TW-2
July 27, 2016 July 28, 2016 August 24, 2016
Table 4
Groundwater Analytical Results
500 Hoke Street Site
TW-1Constituent
Monitoring Well ID #, Sample Date and Constituent Concentration (ug/L)
Raleigh, North Carolina
MW-6MW-2 MW-3 MW-4 MW-5
Well Well Type
MW-1 Type II
MW-2 Type II
MW-3 Type II
MW-4 Type II
MW-5 Type II
MW-6 Type II
NOTES:
All depths recorded in feet below TOC (Top of Casing).
Depths to groundwater were measured September 6, 2016.
20' - 30'30.00
07/29/16
07/29/16
99.64
99.70
25.67
25.71
73.97
73.99
1.5"
1.5"
20' - 30'
20' - 30'
30.00
30.00
08/19/16 100.53 25.00 75.53 1.5"
101.17 25.27 75.90 1.5"20' - 30'
20' - 30'30.00
30.0008/19/16 103.37 26.78 76.59 1.5"20' - 30'
07/29/16 100.00 24.31 75.69 1.5"
30.0008/19/16
Table 5
Monitoring Well Construction Details and Static Water Level Elevations
500 Hoke Street Site
Date
Installed
TOC
Elevation (ft)
Depth to
Groundwater
Groundwater
Elevation Well Diameter Screened Interval
(ft)
Total Depth 1
(ft)
Raleigh, North Carolina
SS-1SUB-SLAB SOIL GASSAMPLE LOCATIONLEGENDSS-3SS-1SS-2SS-4
SS-1 SS-1 (Dup)SS-2 SS-3 SS-4
Sub-slab and
Exterior
Soil Gas Screening
Level (SGSL) ug/m3
TCR=1.0E-05
THQ=0.2
SS-1 SS-1 (Dup)SS-2 SS-3 SS-4
(Oct 2017)
Acetone 97 98 2.20E+05 0.04%0.04%
2-Butanone (MEK)12 13 8.9 6.9 15 3.50E+04 0.03%0.04%0.03%0.02%0.04%
Carbon Tetrachloride 11 1.60E+02 6.88%
Chloroform 3.1 4.10E+01 7.56%
Cyclohexane 6.2 8.5 72 4.20E+04 0.01%0.02%0.17%
Ethanol 43 45 64 94 130 NA ---------------
Ethyl Acetate 2.9 4.90E+02 0.59%
Ethylbenzene 3.1 5.5 7.3 9.1 3.70E+02 0.84%1.49%1.97%2.46%
4-Ethyltoluene 2.3 3 3.8 NA ---------
Heptane 3.8 3.3 9.4 13 200 2.80E+03 0.14%0.12%0.34%0.46%7.14%
Hexane 11 11 28 40 470 4.90E+03 0.22%0.22%0.57%0.82%9.59%
2-Hexanone (MBK)72 2.10E+02 34.29%
Isopropanol 2.1 3.1 3.8 1.40E+03 0.15%0.22%0.27%
Naphthalene 3.7 2.10E+01 17.62%
Propene 6.8 7.1 5.8 5.9 4.6 NA ---------------
Tetrachloroethylene 36 26 24 590 16 2.80E+02 12.86%9.29%8.57%210.71%5.71%
Tetrahydrofuran 1.6 2.6 1.40E+04 0.01%0.02%
Toluene 7.9 6.3 12 17 24 3.50E+04 0.02%0.02%0.03%0.05%0.07%
1,1,1-Trichloroethane 12 3.50E+04 0.03%
Trichlorofluoromethane (Freon 11)3.8 NA ---
1,2,4-Trimethylbenzene 6.5 5.3 7.1 9.4 11 4.20E+02 1.55%1.26%1.69%2.24%2.62%
1,3,5-Trimethylbenzene 4.1 2.3 3.5 4.20E+02 0.98%0.55%0.83%
m&p-Xylene 13 10 20 27 36 7.00E+02 1.86%1.43%2.86%3.86%5.14%
o-Xylene 4.3 3.8 7.1 9.5 13 7.00E+02 0.61%0.54%1.01%1.36%1.86%
Notes:Detections Greater Than NC Residential Soil Gas Screening Level (NCRSGSL) Are Shown In Bold
TABLE 1 - 10/17/2017 SUB-SLAB SOIL GAS TESTING RESULTS
PASSAGE HOME SITE - 500 HOKE STREET, RALEIGH, NORTH CAROLINA
BROWNFIELDS PROJECT NUMBER: 21007-17-092
% of NCRSGSL
Analyte
RDHEC PROJECT NUMBER: 1719.00
Lab Results (ug/m3)
INDOOR / OUTDOOR AIRSAMPLE LOCATIONLEGEND
TABLE 1 - VAPOR INTRUSION INDOOR AIR SAMPLING RESULTS
MAY 7 - 8, 2018
PASSAGE HOME SITE - 500 HOKE ST., RALEIGH, NC
Residential
Indoor Air (A),
ug/m3
Residential
Indoor Air (B),
ug/m3
Residential
Indoor Air (C),
ug/m3
A-1 A-1 (DUP)A-2 A-3 A-4 A-5 A-6 (Ambient)
Acetone 6500 6500 6500 15 15 38 12 12 11 11
2-Butanone (MEK)1000 1000 1000 2.7 J 1.3 J 2.3 J 1.7 J 1.7 J 1.3 J 1.4 J
Carbon Tetrachloride 0.47 4.7 21 0.38 0.47 0.45 0.45 0.47 0.48 0.47
Chloroform 0.12 1.2 12 0.11 J 0.10 J 0.11 J ND (0.073)0.11 J 0.12 J 0.11 J
Cyclohexane 1300 1300 1300 ND (0.086)ND (0.086)ND (0.098)ND (0.098)ND (0.098)ND (0.098)ND (0.098)
cis-1,2-Dichloroethylene ~~~ND (0.057)ND (0.057)ND (0.065)ND (0.065)ND (0.065)ND (0.065)ND (0.065)
trans-1,2-Dichloroethylene ~~~ND (0.055)ND (0.055)ND (0.063)ND (0.063)ND (0.063)ND (0.063)ND (0.063)
Ethyl Acetate 15 15 15 0.22 0.41 2.5 0.37 0.31 0.48 ND (0.11)
Ethylbenzene 1.1 11 110 0.39 0.39 0.44 0.32 0.28 0.27 0.11 J
Heptane 83 83 83 0.41 0.37 1.6 0.3 0.28 0.26 0.14 J
Hexane 150 150 150 0.35 J 0.39 J 1.1 J 0.33 J 0.36 J 0.32 J 0.33 J
2-Hexanone (MBK)6.3 6.3 6.3 0.65 ND (0.085)ND (0.097)ND (0.097)ND (0.097)ND (0.097)ND (0.097)
Isopropanol ~~~1.4 J 3.7 2.5 J 1.3 J 1.1 J 1.1 J 0.72 J
Naphthalene 0.083 0.63 0.63 0.21 0.19 2.4 0.19 J 0.20 J 0.18 J ND (0.16)
Propene 630 630 630 0.79 J ND (0.060)ND (0.068)ND (0.068)ND (0.068)ND (0.068)ND (0.068)
Tetrachloroethylene 8.3 8.3 8.3 0.13 J ND (0.13)ND (0.15)ND (0.15)ND (0.15)ND (0.15)ND (0.15)
Tetrahydrofuran 420 420 420 ND (0.064)ND (0.064)ND (0.073)ND (0.073)ND (0.073)ND (0.073)ND (0.073)
Toluene 1000 1000 1000 1.8 1.7 7.1 1.6 1.3 1.3 0.71
1,1,1-Trichloroethane 1000 1000 1000 ND (0.072)ND (0.072)ND (0.082)ND (0.082)ND (0.082)ND (0.082)ND (0.082)
Trichloroethylene 0.42 0.42 0.42 ND (0.076)ND (0.076)ND (0.087)ND (0.087)ND (0.087)ND (0.087)ND (0.087)
1,2,4-Trimethylbenzene 13 13 13 0.52 0.48 0.63 0.4 0.42 0.37 ND (0.13)
1,3,5-Trimethylbenzene 13 13 13 0.16 J 0.16 J ND (0.12)0.13 J 0.13 J ND (0.12)ND (0.12)
Vinyl Chloride 0.17 1.7 17 ND (0.057)ND (0.057)ND (0.064)ND (0.064)ND (0.064)ND (0.064)ND (0.064)
Xylene, m&p 21 21 21 1.4 1.3 1.5 1.1 0.97 0.93 0.33 J
Xylene, o-21 21 21 0.55 0.53 0.6 0.43 0.42 0.39 0.14 J
NOTES:
1. ND = Not detected above the lab reporting limits shown in parenthesis.
2. NT = Not tested.
3. ~ = No IHSB Residential or Non-Residential screening limits limits.
4. Values in italics exceed the IHSB Residential Indoor Air Screening Limits (Feb 2018).
5. Bold values exceed the IHSB Non-Residential Indoor Air Screening Limits (Feb 2018).
Parameter
SAMPLING LOCATION

26
EMP Version 2, June 2018