23079_Northern Telecom_IA Assessment WP_20200521

Mid Atlantic
Engineering & Environmental Solutions
May 21, 2020
Mr. Kelly Johnson, PG
NC Division of Waste Management
Brownfields Program
1646 Mail Service Center
Raleigh, NC 27699-1646
Subject: INDOOR AIR ASSESSMENT WORK PLAN
NORTHERN TELECOM
4001 AND 4151 EAST NC HIGHWAY 54
DURHAM, DURHAM COUNTY, NORTH CAROLINA
BROWNFIELDS PROJECT NO.: 23079-19-032
MID -ATLANTIC JOB NO. OOOR3358.01
MID -ATLANTIC PE LICENSE: F-0967
REVISION NO.: 00
Dear Mr. Johnson:
409 Rogers View Court
Raleigh, NC 27610
office 919.250.9918
facsimile 919.250.9950
MAAONLINE.COM
Mid -Atlantic Associates, Inc. (Mid -Atlantic) has prepared this Indoor Air Assessment Work Plan for
environmental assessment work to be conducted at the Northern Telecom redevelopment site
located in Durham, North Carolina (NC) (Drawing 1). A potential tenant that would conduct
medical cancer research and testing is slated to occupy the 200,000 square foot warehouse
section at the southern portion of the on -site building (Drawing 2). The objective of this Work Plan
is to evaluate indoor air conditions in the warehouse as requested by the tenant in preparation for
their occupancy.
INTRODUCTION
The subject site is comprised of three parcels totaling 94.89 acres located within the Research
Triangle Park (RTP) area of Durham, North Carolina (Drawing 2). The site has been used for
industrial purposes since at least 1979. The subject site is developed with three parcels containing
unoccupied commercial office/warehouse buildings, parking lots, storage structures, two fire
suppression water tanks and associated pump buildings, guard shack, tennis and volleyball courts,
EXPERIENCED CUSTOMER FOCUSED INNOVATIVE

Indoor Air Assessment Work Plan
Northern Telecom
Durham, North Carolina
May 21, 2020
Page 2
and cemetery.
As part of the redevelopment activities, the buildings currently located on the parcels are planned
to be renovated into a modern, multi -tenant campus that will accommodate technology, office and
life science, tenants. Minimal site disturbance will be required as part of this redevelopment and will
be limited to demolition of select site structures, asbestos -containing material (ACM) abatement,
and landscape installation. Previous assessments have determined that vapor intrusion is not a
risk for the intended uses of the property. This work plan is designed to evaluate indoor air
conditions in the warehouse as requested by the tenant in preparation for their occupancy.
SCOPE OF WORK
Mid -Atlantic proposes the following scope of work:
• Collect a total of four indoor air samples and one duplicate sample (Drawing 2);
• Collect one ambient outdoor sample in the upwind direction of the subject property;
• Test each sample using EPA Compendium Method TO-15 Method (Table 1); and
• Prepare an Indoor Air Assessment Report to document field activities and provide analysis
of the data collected.
SAMPLING METHODOLOGY
Each indoor air sample will be collected from approximately 4-5 feet above the floor in the
lowest level of the building. One ambient outdoor air sample will also be collected. The 24-hour
Summa air samples will be collected using individually certified, 6-liter, stainless steel, Summa
canisters at a maximum flow rate of 8-10 ml/min. Mid -Atlantic will fill the laboratory provided
Summa canister such that the final vacuum in the canister is at least three to four inches of
mercury. The air samples will be collected in accordance with the North Carolina Department of
Environmental Quality Division of Waste Management (NCDEQ DWM) Vapor Intrusion
Guidance Document (March 2018). Although the space will be used for industrial/commercial
purposes, the samples will also be collected and evaluated in accordance with the more
conservative residential risk exposure scenario.
Guidance documents used for the performance of this work include:
• Inactive Hazardous Sites Program Guidelines for Assessment and Cleanup of
Contaminated Sites (January 2020);
• North Carolina Department of Environmental Quality, Division of Waste Management,
Vapor Intrusion Guidance (March 2018);
• Quality System and Technical Procedures for SESD Field Branches; and
• North Carolina Administrative Code Title 15A Subchapter 2C Section 0.100 Well
Construction Standards (October 1, 2009).
Mid Atlantic

Indoor Air Assessment Work Plan
Northern Telecom
Durham, North Carolina
LABORATORY ANALYSIS
May 21, 2020
Page 3
The air samples will be submitted to Enthalpy Analytical, LLC (Enthalpy) in Durham, NC. The
samples will be analyzed for volatile organic compounds (VOCs) in accordance with the EPA
Compendium Method TO-15, as summarized in Table 1. Reporting limits and method detection
limits will meet applicable screening criteria including the reporting of J-Flags. Estimated
concentrations will be reported as "J" flags. Laboratory Level II QA/QC will be provided.
QA/QC
One duplicate indoor air sample will be collected in the field. The duplicate sample will be analyzed
for EPA Compendium Method TO-15 (Table 1). Mid -Atlantic will fill the laboratory provided Summa
canister such that the final vacuum in the canister is at least three to four inches of mercury. The
chain -of -custody will be completed in the field and packed with the samples. The Mid -Atlantic field
technician will deliver the samples to the Enthalpy laboratory located in Durham, NC.
INVESTIGATION DERIVED WASTE ODIM MANAGEMENT
There will be no investigation derived waste generated during this assessment.
REPORTING
Following completion of assessment field activities and receipt of laboratory analytical data, Mid -
Atlantic will prepare an Indoor Air Assessment Report to document field activities and provide
analysis of the data collected. Each concentration detected in the samples collected will be
compared to the Division of Waste Management (DWM) Residential and Non -Residential Vapor
Intrusion Screening Levels (February 2018) and a cumulative risk evaluation(s) performed. At a
minimum, the reports will include:
• Reporting/summary of site work conducted for all sections outlined above;
• Summary of findings and possible recommendations;
• All applicable tables and figures including tabulated analytical data per media sampled and
compared to the screening levels mentioned above, cumulative risk evaluations, and
figures depicting actual sample locations;
• Mid -Atlantic's PE/PG License Number; and
• The Professional Engineer's or Licensed Geologist's individual PE/LG seal and signature.
Mid Atlantic

Indoor Air Assessment Work Plan May 21, 2020
Northern Telecom Page 4
Durham, North Carolina
CLOSING
We appreciate the opportunity to submit this Work Plan. Should you have any questions please do
not hesitate to reach me at 919-250-9918.
Sincerely,
MID -ATLANTIC ASSOCIATES, INC.
Katie A. Lippard
Senior Project Manager
NCPE License No: 18967
Attachments: Table 1 — Sampling and Analysis Plan
Drawing 1 — Topographic Site Map
Drawing 2 — Proposed Sampling Locations
94 Mid Atlantic

TABLE
Mid Atlantic

TABLE 1
SAMLPING AND ANALYSIS PLAN
INDOOR AIR ASSESSMENT
NORTHERN TELECOM
4001 AND 4151 EAST HIGHWAY 54
DURHAM, NORTH CAROLINA
ANALYSES
Samples
Samples Location
Sample ID
Proposed # of
Samples
Proposed Sample
Interval (ft als)
VOCs
TO-15 Method
Warehouse area
IA-1
1
4-5
1
Warehouse area
IA-2
1
4-5
Indoor Air Samples
1
Warehouse area
IA-3
1
4-5
1
Warehouse area
IA-4
1
4-5
1
Duplicate Sample
Data Quality Assurance for each sample media (one indoor air)
1
Ambient Outdoor Sample
Data Quality Assurance -Upwind Property Boundary
1
MAXIMUM TOTALS:
6
Notes:
1. Laboratory QA Level II will be requested for all data packages
2. One blind duplicate sample will be collected per medium, per container type, and the greater of per day or per 20 samples, and one MS/MSD sample will
be analyzed by the laboratory for each meadia group.
Abbreviations:
MS/MSD - Matrix Spike/Matrix Spike Duplicate
VOC - Volitile Organic Compound
ft als - feet above land surface

DRAWINGS
Mid Atlantic

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IN
REFERENCES:
1. SOUTH EAST DURHAM, NC DIGITAL RASTER GRAPHICS,
USGS. SCANNED FROM 1:24,000-SCALE DURHAM, NC
TOPOGRAPHIC MAPS, PUBLISHED 2013, USGS.
2. INSET MAP DIGITAL DATA FROM 2002 NATIONAL TRANSPORTATION ATLAS,
BUREAU OF TRANSPORTATION STATISTICS, WASHINGTON, D.C.
3. PROPERTY BOUNDARY DATA FROM WAKE COUNTY GIS.
TOPOGRAPHIC SITE MAP
4001 AND 4151 NC HWY 54
DURHAM, NORTH CAROLINA
SCALE: 1:24,000
Feet
2,000 4,000
DRAWN I DATE:
BY: GCH NOVEMBER 2019

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Legend
PROPOSED INDOOR AIR SAMPLE
SUBJECT SITE
PARCEL BOUNDARIES
DRAWN BY: KRC
DATE: MAY 2020
-
PROPOSED SAMPLING LOCATIONS
DRAFT CHECK
Mid Atlantic
NORTHERN TELECOM
BY:
JOB NO.: R3358.01
4001 AND 4151 EAST HIGHWAY 54
ENGINEER CHECK
GIS NO.: 3G-R3358.01-2B
Engineering & Environmental Solutions
DURHAM, NORTH CAROLINA
BY:
APPROVED
BY:
DRAWING NO.: 2
REFERENCE: PARCEL BOUNDARIES FROM NC ONEMAP. LIMITED PHASE 11 ENVIRONMENTAL SITE ASSESSMENT, CBRE, INC., DATED JANUARY 26, 2017. PROPOSED DEVELOPMENT PLAN FROM TRINITY CAPITAL ADVISORS