19023_FINAL Spencer's Mill EMP 20180313

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EMP Form ver.1, October 23, 2014
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 project manager for the program.
Prospective Developers and/or their consultants must complete and submit this form and all
pertinent attachments to their project manager prior to any site earthmoving or other
development related activities. For the resultant EMP to be valid for use, it must be completed,
reviewed by the program, and signed by all signers at the bottom. Consult your project
manager if you have questions.
GENERAL INFORMATION
Date: 03/13/2018
Brownfields Assigned Project Name: Former Spencer’s Mill
Brownfields Project Number: 19023-15-086
Brownfields Property Address: 328 Willow Street, Mount Airy, North Carolina 27030
Brownfields Property Area (acres): 9.484 acres
Is Brownfields Property Subject to RCRA Permit? ☐ Yes ☒ No
If yes enter Permit No.:
Is Brownfields Property Subject to a Solid Waste Permit? ☐ Yes ☒ No
If yes, enter Permit No.: Click here to enter text.
COMMUNICATIONS
Prospective Developer (PD): The City of Mount Airy
Phone Numbers: Office: 336-786-3533…..Mobile: Click here to enter text.
Email: [e-mail]
Primary PD Contact: Martin Collins
Phone Numbers: Office: 336-786-3533 Mobile: Click here to enter text.
Email:
Environmental Consultant: Apex Companies, LLC
Phone Numbers: Office: 704-799-6390…..Mobile: [phone]
Email: [e-mail]
Brownfields Program Project Manager: Bill Schmithorst
Office: 919-707-8159
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EMP Form ver.1, October 23, 2014
Email: [e-mail]
Other DENR Program Contacts (if applicable, i.e., UST Section, Inactive Hazardous Site Branch,
Hazardous Waste, Solid Waste): UST Section, Karen Hall, 336-776-9681; NCDEQ Brownfields Project
Manager, Bill Schmithorst, 919-707-8159
NOTIFICATIONS TO THE BROWNFIELDS PROGRAM
Advance Notification Times to Brownfields Project Manager: Check each box to accept minimum
notice periods (in calendar days) for each type of onsite task:
On-site assessment or remedial activities: Within 10 days ☒
Construction or grading start: Within 10 days ☒
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, venting of explosive environments):
Within 48 hours ☒
Installation of mitigation systems: Within 10 days ☒
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: Parking and hotel
2)Summary of Redevelopment Plans (attach conceptual or detailed plans as available):
a)Do plans include demolition of structure(s)?: ☒ Yes ☐ No ☐ Unknown
b)Do plans include removal of building foundation slab(s) or pavement:
☒Yes ☐ No ☐ Unknown
c)Provide brief summary of redevelopment plans, including demolition, removal of building
slabs/pavement and other structures: The site is planned to be redeveloped for
commercial/manufacturing/retail, event space, boutique hotel, residential
apartments/condominiums, and potential open space. The City of Mount Airy owns the
property but did not cause the contamination associated with the site. The city is not
affiliated with the previous owner and is not utilizing the property at this time. Mount Airyintends to address the contamination on the property as the property seller or to motivate
redevelopement of this key property in the middle of the downtown area. The Preliminary
Site Plans are attached as Appendix 1 and includes residential high density apartments, event
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EMP Form ver.1, October 23, 2014
space, parking area, manufacturing/commercial/retail space and a hotel. The residential high
density apartment would be located on the north eastern portion of the property, the hotel
would be on the south eastern portion of the property, and the
manufacturing/commercial/retail/event space would be on the western portion of the
property. The historical manufacturing buildings on-site still remain and will be redeveloped
into the aforementioned future uses. Existing impervious surfaces will remain, however, most
if not all areas will be resurfaced or replaced with new asphalt and concrete. The existing roof
line will remain that connects Building #8 and Buildling #9, however, the open areas under the
roof will be replaced with either impervious surfaces or green space. Some of this parking
area may be used as open green space in the future but this has not been determined. Soil
excavation within the impacted areas will be conducted during the redevelopment. Soil
impact was identifed in sample locations including SB-17, SB-18, SB-22, and SB-43 at
concentrations which the Preliminary Industrial Health Based Soil Remediation Goals of the
Inactive Hazardous Sites Branch of the Department of Environmental Quality’s Superfund
Section (October 2016 version). The impacted areas are shown on the Soil Sample Data –
Figure 5 provided in Appendix 2. The excavation within the known impacted areas will be
limited to the removal of the known underground storage tank (UST) located beneath the
boiler room in the building for the possible construction of an in ground swimming pool for
the hotel. Several proposed cut areas for utility installation are located on the northern and
southern portions of the property, but outside known areas of impact. Since the
redevelopment plan has not been finalized at this time, and the removal of the UST beneath
building is a tentative plan at this time, a work plan detailing the removal activities of the UST
has not been prepared. If it is confirmed that the UST will be removed, a work plan will be
prepared, and the work plan will be provided to the DEQ for review and approval prior to
removal. If removal of the impacted soils is completed, removal of the NORP from the deed
may be evaluated but will be subject to approval by both the UST Section and Brownfields
Program of the NCDEQ.
3)Which category of risk-based screening level is used or is anticipated to be specified in the
Brownfields Agreement?
☒Residential ☐ Non-residential or Industrial/Commercial
Note: If children frequent the property, residential screening levels shall be cited in the Brownfields
Agreement for comparison purposes.
4)Schedule for Redevelopment (attach construction schedule):
a)Phase I start date and anticipated duration (specify activities during each phase):
1/15/2018
At this time it is anticipated that grading work will begin January 15, 2018. Construction will begin
March 15, 2018. The entire site will be built out during this initial phase and take up to 12 to 16
months to complete.
b)If applicable, Phase 2 start date and anticipated duration (specify activities during each
phase): Click here to enter a date.
Click here to enter text.
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EMP Form ver.1, October 23, 2014
c)Additional phases planned? If yes, specify activities if known:
☐Yes ☐ No ☒ Not in the foreseeable future ☐Decision pending
d)Provide the planned date of occupancy for new buildings: 4/15/2019
CONTAMINATED MEDIA
Contaminated Media (attach tabulated data summaries for each impacted media and figure(s) with
sample locations):
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
Part 7. Indoor Air: ☒Yes ☐ No ☐ Suspected
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 specific compounds): The soil has been tested for
various chemicals and metals associated with the specific past manufacturing operations. There are
petroleum semi-volatile organics (SVOCs) including benzo (a) pyrene, benzo (b) fluoranthene,
naphthalene, and indeno (1,2,3-cd) pyrene, and metals (specifically total chromimum) in the soils
that exceeded acceptable action levels. Figures showing the location of the COCs are attached as
Appendix 2.
2)Depth of known or suspected contaminants (feet): In general semi-volatile organics were found
between seven and thirteen feet. Chromium was identified between one to eight feet
3)Area of soil disturbed by redevelopment (square feet): The area of soil within the known impacted
portion of property that will be disturbed by redevelopment will be limited to the former boiler
room area and a very limited portion of the former bleaching and dyeing room.
4)Depths of soil to be excavated (feet): The area of soil that will be disturbed by redevelopment will
be limited to those listed above. For the limited excavation areas within the known impacted area,
native soil will be excavated for the emplacement of utility trenches for the installation of the new
drainage features, as well as the removal of the UST beneath the boiler room for the construction of
an in-ground swimming pool. Potential excavation depth for pool installation is to be determined
but likely up to 12 feet below land surface.5)Estimated volume of soil (cubic yards) to be excavated (attach grading plan): The amount of soil
to be removed has not yet been determined. There is minimal overall grading planned. Existing
structures and parking areas will be used where ever possible.
6)Estimated volume of excavated soil (cubic yards) anticipated to be impacted by contaminants:
The amount of soil to be removed has not yet been determined but primarily includes the UST
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EMP Form ver.1, October 23, 2014
removal and soil excavation associated with the installation of the pool. Potential to be an area 30 ft
wide by 60 ft long by 12 ft deep which will include UST as well as surrounding soils.
7)Estimated volume of contaminated soil expected to be disposed of offsite, if applicable: The
amount of soil to be removed has not yet been determined. Some soils removed as part of the UST
removal may be used as backfill in other portions of the site if not grossly impacted and if there is a
need. However, this has not been determined at this time. Reuse of the soils will need to be
reviewed and approved by the Brownfields Program. If soils can not be reused on-site, they shall be
doposed of in accordance with all applicable regulations at a regulated facility.
IMPORTED FILL SOIL
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?
3)If yes, what is the depth of fill soil to be used at the property?
If a range of depths, please list the range.
4)PRIOR TO ITS PLACEMENT AT THE BROWNFIELDS PROPERTY, provide plan to analyze fill soil to
demonstrate that it meets acceptable standards and can be considered clean for use at the
Brownfields property (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 (speciated), mercury, lead,
selenium and silver)
☐Metals –Hazardous Substance List -14 (antimony, arsenic, beryllium, cadmium, chromium
(speciated according to IHSB protocol), copper, lead, manganese, mercury, nickel, selenium, silver,
thallium, and zinc)
☐Metals – EPA Priority Pollutant List – 13 (arsenic, beryllium, cadmium, chromium (speciated
according to IHSB protocol), copper, mercury, nickel, lead, antimony, selenium, silver, thallium, and
zinc)
☐Other Constituents & Analytical Method: Based on the site history of the borrow area,
sampling for other constituents is not recommended.
☒Known borrow material (DESCRIBE SOURCE AND ATTACH SAMPLING PROFILE): Based on
the current site plans, there is no need to import fill material. However, in the event that fill material
is required for the redevelopment process, procedures have been outlined in the EMP. Soils to be
imported will be tested prior to transport to the site to confirm that no COCs are present. If no historic
sampling has been conducted to evaluate the facility, to evaluate the potential fill material, one
composite sample from every 1,000 tons of material will be collected for analysis. The sampling
location will be skewed toward potential areas of impact based on visual and olfactory evidence. The
soil will be analyzed using the laboratory methods for the analytes listed above. Additional analytical
methods will be included if there is the potential for impact by other COCs based on current and
historic site use.
*Imported soil is not anticipated to be needed at this time. Overburden soils removed during the possible UST removal and installation of the swimming pool will be used as fill material, if needed, and if approved by the Brownfields Program. *
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MANAGING ONSITE SOIL
1)If soil in known or suspected areas of contamination 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 dataavailable).
2)HAZARDOUS WASTE DETERMINATION – 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). Soils managed at the site have previously
carried an F code due to the presence of spent solvents. However, at this time, excavation is not
planned in areas which may contain these waste materials. Excavation is planned at the previous
boiler room including removal of the UST which was abandoned in place. The impacted soils
would contain petroleum products only.
If yes, do the soils exceed the “Contained-Out” levels in Attachment 1 of the North Carolina
Contained-In Policy? ☐ Yes ☒ No
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 DENR
HAZARDOUS WASTE SECTION RULES AND REGULATIONS.
3)HAZARDOUS WASTE DETERMINATION – Does the soil contain a CHARACTERISTIC WASTE?:
☐Yes ☒ No
If yes, mark reason(s) why below (and include pertinent analytical results).
☐Ignitability
☐Corrosivity
☐Reactivity
☐Toxicity
☐TCLP results
☐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)
If no, explain rationale: Contaminated soil on-site is impacted with with No. 6 fuel oil associated with
a known release from an underground storage tank (UST) located beneath the boiler room of an on-
site building. This release was previously closed out by the UST Section and an NFA was issued,
although the UST remained in place because removing the UST was not feasible at the time. Soil
impacted with No. 6 fuel oil is not considered to be a hazardous waste. Based on historic data and
additional data collected as part of the BFA process, it is not anticipated that contaminated soils
impacted with hazardous waste will be encountered.
A grading plan will be provided prior to site work, once the site development plans are
finalized, and if needed.
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EMP Form ver.1, October 23, 2014
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 DENR HAZARDOUS WASTE
SECTION RULES AND REGULATIONS.
4)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 10/1/2016
☐Preliminary Health-Based Industrial/Commercial SRGs Click here to enter a date.
☐Site-specific risk-based cleanup level, or acceptable concentrations determined via
calculated cumulative risk. Enter details of methods used for determination/explanation:
Click here to enter text.
5)Check the following action(s) to be taken during excavation and management of said soils:
☒Manage fugitive dust from site:
☒Yes ☐ No
If yes, describe method; If no, explain rationale: Dust levels will be visually monitored by The
City of Mt. Airy and/or their designee to ensure compliance with OSHA standards. If dusty conditions
are observed or anticipated, appropriate measures will be taken to reduce dust levels, such as wetting
the exposed soil areas.
☒Field Screening:
☒Yes ☐ No
If yes, describe method; If no, explain rationale: Field screening of soils should consist of
measuring the soil vapor headspace in accordance with accepted practices and guidelines established
by the Environmental Protection Agency (EPA). Such procedures include placing representative soil
samples in dedicated air-tight containers which are filled approximately half full and after
approximately several minutes measuring the organic vapors in the headspace inside the container
elevated vapor readings as detected with field instrumentation such as a Photo Ionization Detector
(PID) and/or Flame Ionization Detector (FID). This will ensure that excavated soils are inspected/field
screened and that contaminated soils are properly segregated. Soils determind to be contaminated,
based on field screening, visual and olfactory observations during excavation, will be managed
according to local, state, and federal requirements. Ambient air will also be field screened with a PID and/or FID to assure the health and safety of workers is addressed when dealing with soils known to
be impacted.
☒Soil Sample Collection:
☒Yes ☐ No
If yes, describe method (e.g., in-situ grab, composite, stockpile, etc.); If no, explain rationale:
If contaminated soil is encountered during excavation and elevated PID readings are reported, then if
the material is to be shipped off-site for disposal, grab samples may be collected as needed for waste
profile development.
☒Stockpile impacted soil in accordance with NCDENR IHSB protocol in the current version of
the “Guidelines for Assessment and Cleanup”, and providing erosion control, prohibiting
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EMP Form ver.1, October 23, 2014
contact between surface water/precipitation and contaminated soil, and preventing
contaminated runoff. Explain any variances:
If impacted soils are encountered requiring excavation and disposal, these
protocol will be followed.
☒Analyze potentially impacted soil for the following 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 (speciated), mercury,
lead, selenium and silver)
☐Metals –Hazardous Substance List -14 (antimony, arsenic, beryllium, cadmium,
chromium (speciated according to IHSB protocol), copper, lead, manganese, mercury, nickel,
selenium, silver, thallium, and zinc)
☐Metals – EPA Priority Pollutant List – 13 (arsenic, beryllium, cadmium, chromium
(speciated according to IHSB protocol), copper, mercury, nickel, lead, antimony, selenium, silver,
thallium, and zinc)
☐Other Constituent(s) & Analytical Method(s):
☒Proposed Measures to Obtain Pre-Approval for Reuse of Impacted Soil within the
Brownfields Property Boundary
☒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
☒Use geotextile to mark depth of fill material (provide description of material)
☒Manage soil under impervious cap ☐ or clean fill ☒
Describe cap or fill: Surface completion will include asphalt parking areas and concrete
building pads (provide location diagram)
☒Confer with NC BF Project Manager if Brownfield Plat must be revised (or re-
recorded if actions are Post-Recordation).
☒Other: Impacted soils will be encountered for the removal of the UST and
subsequent installation of the in-ground pool. The impacted soils will either be shipped to a landfill
which accepts petroleum impacted soils, or reused on-site. Reuse could include placing the material
beneath future parking lot. However, it may be more cost effective to ship the material off-site since
identified cut areas are minimal and backfilling of utility trenches would occur prior to the pool
installation. Brownfield staff will be notified and a plan will be developed and approved by DEQ prior
if developer does opt to backfill the impacted soils on-site.
☐Final grade sampling of exposed soil (i.e., soil that will not be under buildings or permanent
hardscape): [if not checked provide rationale for not needing]
Provide diagram of soil sampling locations, number of samples, and denote Chemical
Analytical Program 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 (speciated), mercury,
lead, selenium and silver)
*
* Minimal disturbance of surface soil is anticipated, and includes landscape strips outside the areas of concern (AOCs). If final plans include exposed soil in known AOCs, final grade sampling will be re-evaluated.
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EMP Form ver.1, October 23, 2014
☐Metals –Hazardous Substance List -14 (antimony, arsenic, beryllium, cadmium,
chromium (speciated according to IHSB protocol), copper, lead, manganese, mercury, nickel,
selenium, silver, thallium, and zinc)
☐Metals – EPA Priority Pollutant List – 13 (arsenic, beryllium, cadmium, chromium
(speciated according to IHSB protocol), copper, mercury, nickel, lead, antimony, selenium, silver,
thallium, and zinc)
☐Pesticides
☐PCBs
☐Other Constituents & Analytical Method: .
OFFSITE TRANSPORT & DISPOSITION OF EXCAVATED SOIL
NOTE: Unless soil will be transported offsite for disposal in a permitted facility under applicable
regulations, no contaminated or potentially contaminated soil may leave the site without approval
from the brownfields program. Failure to obtain approval may violate a brownfields agreement,
endangering liability protections and making said action subject to enforcement. Justifications
provided below must be approved by the Program in writing prior to completing transport activities.
☒Transport and dispose of impacted soil offsite (documentation of final disposition must be sent to
Brownfields Project Manager)
☒Landfill – analytical program determined by landfill
☐Landfarm or other treatment facility The material will be transported under manifest to a
suitable facility based on local, state, and federal requirements.
☐Use as Beneficial Fill Offsite – provide justification: Click here to enter text.
☐Use as Beneficial Fill at another Suitable Brownfields Site – (Note: a determination that a
site is a “Suitable Brownfields” site will require, at a minimum, that similar concentrations of the same
or similar contaminants already exist at both sites, use of impacted soil as beneficial soil will not
increase the potential for risk to human health and the environment at that site, and that notarized
documentation of the acceptance of such soil from the property owner of the receiving site is
provided to Brownfields. Provide justification:
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 fromwhich 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? Result: Yes □ No □
If no, include rationale here. Utility trenches will not be backfilled with impacted soil if it could pose
a threat to indoor air quality. The material will either be backfilled in other suitable areas, or
transported off-site for disposal.
If yes, provide specifications on barrier materials
Other comments regarding managing impacted soil in utility trenches: If any other utility trenches
bisect impacted or potentially impacted soils, clean fill will be installed over the native soils. If the
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clean soil is not practicable, a liner may need to be utilitzed to mark the base of the native impacted
soil to allow non HAZWOPER trained personnel to work in the trench areas for construction activities .
In addition, with the emplacement of a liner or clean fill material, any future repairs can be made
without notifying NCDEQ or the use of HAZWOPER trained personnel.
PART 2. GROUNDWATER – Please fill out the information below and attach figure showing
distribution of groundwater contaminants at site
What is the depth to groundwater at the Brownfields Property? During the most recent
groundwater sampling event conducted on the property in September 2015, depth to groundwater
measurements across the property ranged from 14.1 feet bls to 21.79 feet bls. Figures depicting the
most recent groundwater sampling data are provided in Appendix 3.
Is groundwater known to be contaminated by ☐onsite ☐ offsite ☒ both ☐ or unknown
sources? Describe source(s): Groundwater on-site has been impacted at low levels due to on-site
activities. There is minimal impacts to groundwater as a result of an off-site dry cleaner.
What is the direction of groundwater flow at the Brownfields Property? Groundwater flow on-site
was not measured during the September 2015 assessment, but is assumed to be predominately
towards the north and west.
Will groundwater likely be encountered during planned redevelopment activities? ☒ Yes ☐ No
If yes, describe these activities: Groundwater may be encountered during the removal of the UST
beneath the boiler room. The depth to groundwater in the location is known to range from
approximately 14 feet bls to 21 feet bls, and the base of the UST is assumed to be approximately 15
feet bls.
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, or sampling procedures): If groundwater is encountered during redevelopment activities
and/or UST removal activiites, it will be containerized. Dependent upon Mt. Airy POTW requirements,
the water may be discharged to the city POTW once pre-approval is obtained. The analytical required
(if any) will be dependent upon the POTW permit requirements. If the POTW cannot accept the water,
it will be transported off-site for disposal in accordance with all local, state, and federal regulations.
The analytical data required for profile development will be dependent upon the facility and their
permit requirements.
PART 3. SURFACE WATER – Please fill out the information below.
Attach a map showing the location of surface water at the Brownfields Property.
Is surface water at the property known to be contaminated: ☐ Yes ☒ No
Will workers or the public be in contact with surface water during planned redevelopment activities?
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EMP Form ver.1, October 23, 2014
☐Yes ☒ No
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): The nearest surface water body
is located over 1,000 feet west of the Subject Property.
PART 4. SEDIMENT – Please fill out the information below.
Is sediment at the property known to be contaminated: ☐ Yes ☒ No
Will workers or the public be in contact with sediment during planned redevelopment activities?
☐Yes ☒ No
If yes, attach a map showing location of known contaminated sediment at the property.
In the event that contaminated sediment is encountered during redevelopment activities, list
activities for management of such events (stream bed disturbance):
PART 5. SOIL VAPOR – Please fill out the information below.
Do concentrations of volatile organic compounds at the Brownfields property exceed the following
vapor intrusion screening levels in the following media:
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
Attach a map showing the location of soil vapor contaminants that exceed site screening levels.
If applicable, at what depth(s) is soil vapor known to be contaminated? A vapor investigation was
conducted that included collecting eight indoor air samples from the three main buildings located on
the site, the installation of one sub-slab soil gas point, and the collection and analysis of one sub-slab
soil gas sample collected from approximately one foot bls. A figure summarizing the results of vapor
assessment conducted in February 2017 are provided in Appendix 4.
Will workers encounter contaminated soil vapor during planned redevelopment activities?
☐Yes ☒ No ☐ Unknown
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:
Concentrations in indoor air and subslab were not high enough to be of concern for short duration
exposure such as construction activities. If odors or vapors are encountered during the excavation
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activities while working near impacted areas, the breathing zone will be monitored using appropriate
air monitoring instrumentation by a qualified environmental professional. The vapor monitoring
results will be reviewed by a certified PG or PE. If elevated vapor concentrations are identified that
exceed the OSHA allowable limits, HAZWOPER trained workers will utilize engineering controls, such
as wetting soils, ventilation with fans, using foam to control vapors, having workers stand upwind,
etc. to make the work area suitable for construction workers and monitor the area to confirm that site
conditions have not changed.
PART 6. SUB-SLAB SOIL VAPOR -please fill out the information below if existing buildings or
foundations will be retained in the redevelopment.
Are sub-slab soil vapor data available for the Brownfields Property? ☒ Yes ☐ No ☐ Unknown
If data indicate that sub-slab soil vapor concentrations exceed screening levels, attach a map showing
the location of these exceedances.
At what depth(s) is sub-slab soil vapor known to be contaminated? ☐ 0-6 inches ☒ Other, If other
describe: Sub-slab soil gas samples were collected below the existing concrete slab at a depth of
approximately one foot bls to determine if mitigation is needed to address any potential vapors.
Staining and standing pools of liquid with petroleum sheen were observed on the floor of some of the
buildings during the time of sampling. The buildings had been closed up with no electricity and no ventilation for at least several months prior to the sampling event. When evaluating the results of the
sub-slab sample compared to the indoor air samples, as many as 45 COCs were identified within the
indoor air, and only 27 were found present in the sub-slab indicating that the majority of the
contaminants are not present beneath the slab and are likely the result of residual contaminants
remaining on the walls and floors of the building. These COCs will likely be mitigated during the
cleaning of the building that will take place during the building renovation. A figure summarizing the
results of vapor assessment conducted in February 2017 are provided in Appendix 4.
Will workers encounter contaminated sub-slab soil vapor during planned redevelopment activities?
☐Yes ☐ No ☒ Unknown
In the event that contaminated soil vapor is encountered during redevelopment activities, list
activities for management of such contact: The breathing zone will be monitored using appropriate
air monitoring instrumentation by a qualified environmental professional, during the removal of
asphalt in the plume area and the limited portions of the building slab to be taken up for the
installation of the stormwater vault and select utilites. The air monitoring results will be reviewed by
a certified PG or PE. If elevated vapor concentrations are identified that exceed the OSHA allowable
limits, HAZWOPER trained workers will utilize engineering controls, such as wetting soils, ventilation
with fans, using foam to control vapors, having workers stand upwind, etc. to make the work area
suitable for construction workers and monitor the area to confirm that site conditions have not
changed.
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EMP Form ver.1, October 23, 2014
PART 7. INDOOR AIR – Please fill out the information below .
Are indoor air data available for the Brownfields Property? ☒ Yes ☐ No ☐ Unknown
If yes, attach a map showing the location where indoor air contaminants exceed site screening levels.
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
In the event that contaminated indoor air is encountered during redevelopment activities, list
activities for management of such contact: Elevated concentrations of COCs were encountered which
appeared to be due to surficial spills and building materials. Once the site is cleared, the concrete
washed down and remaining dry wall and other absorbent materials removed, there should very
minimal potential for exposure. Concentrations in indoor air were of issue when evaluated against
residential standards for long term exposure. The short term exposures associated with construction
activities should not be of issue. The breathing zone will be monitored using appropriate air
monitoring instrumentation by a qualified environmental professional, during construction activities.
The air monitoring results will be reviewed by a certified PG or PE. If elevated vapor concentrations
are identified that exceed the OSHA allowable limits, HAZWOPER trained workers will utilize
engineering controls, such as wetting soils, ventilation with fans, using foam to control vapors, having workers stand upwind, etc. to make the work area suitable for construction workers and monitor the
area to confirm that site conditions have not changed.
PART 8 – Vapor Mitigation System – Please fill out the information below .
Is a vapor intrusion mitigation system proposed for this Brownfields Property?
☐Yes ☒ No ☐ Unknown
If yes, provide the date the plan was submitted to the Brownfields Program.
Click here to enter a date.
Attach the plan.
Has the vapor mitigation plan been approved by the NC Brownfields Program?
☐ Yes ☐ No ☐ Unknown
Has the vapor mitigation plan been signed and sealed by a North Carolina professional engineer?
☐Yes ☐ No
What are the components of the vapor intrusion mitigation system?
☐Sub-slab depressurization system
☐Sub-membrane depressurization system
☐Block-wall depressurization system
☐Drain tile depressurization system
*A vapor intrusion mitigation system is not proposed since the majority of the contaminants present in the indoor air were either not identified in the sub-slab or were identified at higher concentrations in the indoor air, as indicated in February 2017 Vapor Intrusion Assessment Report. Therefore, a mitigation system would not be effective as the data indicates the contaminants in the indoor are are likely building materials not subsurface contaminants.
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EMP Form ver.1, October 23, 2014
☐Passive mitigation methods
☐Vapor barriers
☐Perforated piping vented to exterior
☐Other method: The precise elements of the Vapor mitigation system are yet to be determined and
will be provided to DEQ for approval.
PART 9. CONTINGENCY FOR ENCOUNTERING UNKNOWN TANKS, DRUMS, OR OTHER WASTE
MATERIALS
Please provide a contingency plan in the event unknown tanks, drums, fuel lines, landfills, or other waste materials are encountered during site activities.
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
Notification to State 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. See Notification Section on Page 1 for notification requirements.
POST-REDEVELOPMENT REPORTING
In accordance with the site’s Brownfield Agreement, provide a report within the designated schedule to the State Brownfields Project Manager.
☒Check box to acknowledge consent to provide a redevelopment summary report in compliance
with the site’s Brownfields Agreement.
APPENDIX 1
Preliminary Site Plans
FRANKLIN STREET
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TWILLOW STREETMAKER SPACEHOTELAPARTMENTSPROPOSEDEXPANSIONRECREATIONSPACEPIAZZA UNDERTHE ROOFPUBLIC SPACEOPEN SPACEPROP. FULL MOVEMENTACCESS DRIVEPROP. FULL MOVEMENTACCESS DRIVEPROP. FULL MOVEMENTACCESS DRIVEPROP. FULL MOVEMENTACCESS DRIVEFUTURE CROSSACCESSPROP. RETAINING WALLHOTEL DUMPSTERSTERRACECOURTYARDAPARTMENT DUMPSTERSLOADING ZONELOADING ZONEVIRGI
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TOTAL PARKING COUNT = 327 SPACES1"=20'02051020INSET BINSET BConcept Plan | Mt. Airy, NCBelmont Sayre1927 S. TRYON STREET, SUITE 310 CHARLOTTE, NC 28203PHONE: [phone] FAX: [phone]TMNCBELS P-11321"=50'05012.52550SPENCER MILL REDEVELOPMENTMAY 10, 2017 |NCC162097INSET AINSET A1"=50'05012.52550
FRANKLIN STREETVIRGINIA STREETWILLOW STREETW. OAK STREETLOVILL STREETMAKER SPACEHOTELAPARTMENTSPROPOSEDEXPANSIONPIAZZA UNDERTHE ROOFCOURTYARDPUBLICSPACEOPEN SPACEPROP. FULL MOVEMENTACCESS DRIVEPROP. FULL MOVEMENTACCESS DRIVEPROP. FULL MOVEMENTACCESS DRIVEPROP. FULL MOVEMENTACCESS DRIVEFUTURE CROSSACCESSPROP. RETAINING WALLHOTEL DUMPSTERSTERRACEAPARTMENT DUMPSTERSLOADING ZONELOADING ZONERECREATION SPACESUBSTATION TO BE REMOVEDBY UTILITY PROVIDERFILL EXISTING PIPE WITHFLOWABLE FILL ANDREROUTE AS SHOWNNOTE:1.THE EXISTING UTILITY INFORMATION ILLUSTRATEDON THIS PLAN HAS BEEN PROVIDED BY THE CITY OFMT. AIRY AND GIS. PLAN IS NOT APPROVED FORCONSTRUCTION.2.CAPACITY AND FINAL TIE IN LOCATIONS TO BEVERIFIED BY THE CITY ENGINEER.Schematic Utility Layout | Mt. Airy, NCBelmont Sayre1927 S. TRYON STREET, SUITE 310 CHARLOTTE, NC 28203PHONE: [phone] FAX: [phone]TMNCBELS P-11321"=50'05012.52550SPENCER MILL REDEVELOPMENTJULY 11, 2017 | NCCC162097LEGENDEXISTING WATER LINEPROPOSED WATER LINEEXISTING SANITARY PIPEPROPOSED SANITARY PIPEPROPOSED STORM PIPEEXISTING STORM PIPEPROPOSED ELECTRIC LINEEXISTING ELECTRIC LINEPROPOSED GAS LINEEXISTING GAS LINEGGG
APPENDIX 2
Soil Sample Data Map
4.6
(Background)
APPENDIX 3
Groundwater Sample Data Map

APPENDIX 4

Vapor Sample Locations and Detections Map