S&ME, Inc. Proposed Soil and Surface Water Sampling dated March 28, 2011

S&ME, INC. / 3201 Spring Forest Road / Raleigh, NC 27616 / p 919.872.2660 / f 919.876.3958 / www.smeinc.com

March 28, 2011

NCDENR, Division of Waste Management
Brownfields Program
401 Oberlin Road
Raleigh, NC 27605

Attention: Dr. Joe Ghiold email: [e-mail]
Project Manager

Reference: Proposed Soil and Surface Water Sampling
5.5-Acre Erwin Square/Former Burlington Industries Site
2109 Hillsborough Road
Durham, North Carolina
Developer: Crescent Erwin Venture I, LLC
S&ME Project No. 1054-10-288A

Dear Dr. Ghiold:

Crescent Erwin Venture I, LLC, has submitted an application to the Brownfields Section
under the Redevelopment Now program to redevelop an approximate 5.5-acre central
portion of a 14.272-acre parent property located at 2109 Hillsborough Road in Durham,
North Carolina. S&ME, Inc. (S&ME) has been authorized by Crescent Erwin Venture I,
LLC, to perform shallow soil and surface water sampling services at the site, and
requested that we provide our proposed sample locations and analyses to you for your
review and input.

S&ME previously completed a Phase I Environmental Site Assessment (ESA), dated
October 7, 2010, for the above-referenced property located in Durham, North Carolina.
In summary, the Phase I ESA identified three recognized environmental conditions in
connection with the subject property:

1. The subject property was formerly a central portion of the former Burlington
Industries, Inc. Durham Plant No. 0183 facility, and was developed with several past
industrial textile mill buildings and portions of buildings over time. There is the
potential for soil and groundwater contamination from the historical industrial uses of
the site. Based on the identified features and historical uses of the site, potential
contaminants include petroleum constituents, chlorinated solvents, metals and poly-
chlorinated biphenols (PCBs).

2. The parent property, Burlington Industries – Durham Plant (Facility ID No. 0-
016153), is listed as a registered UST facility. Based on the UST information
provided in the EDR report, three registered USTs have been permanently closed at
Crescent Erwin Venture I, LLC Shallow Soil & Seep Water Sampling Program
5.5-Acre Erwin Square Site S&ME Project No. 1054-10-288A
Durham, North Carolina March 28, 2011

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the site. Due to conflicting closure dates and sizes of these USTs, it is unclear
whether they correspond to those identified in the LUST/IMD incidents.

3. An incident at Burlington Industries (LUST/IMD Incident No. 20604) was identified
associated with the First Union Plaza site (now Wachovia), located adjacent to the
southwest of the subject property. A chlorinated compound groundwater contaminant
plume extends from the Wachovia property onto the southern and western portions of
the subject property. This incident was transferred to the NCDENR Inactive
Hazardous Sites Branch in 2007 and has not been closed out.

The Burlington Industries structures formerly located on the subject property have been
demolished, and the site is currently a maintained lawn area with some remnant
foundation slabs. Please see the full Phase I ESA report for additional details regarding
the past uses of the subject property and the identified recognized environmental
conditions.

We understand that Crescent Erwin Venture I, LLC is planning to redevelop the subject
property with a multi-story residential development and a parking deck. Mr. Benjamin
Collins with Crescent Erwin Venture I, LLC, the proposed Developer and Brownfields
applicant, has indicated that based on the presence of the known groundwater
contaminant plume, the proposed structures will be constructed with a means of
preventing vapor migration, such as a vapor barrier. Based on groundwater elevation data
provided in the previous LUST/IMD incident files, the depth to groundwater ranges from
approximately 6.5 feet below the ground surface (bgs) to 11.5 feet bgs. Significant
excavation into the groundwater table is not anticipated for the proposed development at
this time. Therefore, additional assessment of groundwater does not appear to be
necessary, contingent upon providing a means of preventing vapor migration into the
proposed structures.

As such, S&ME proposes to perform shallow soil sampling at specific areas of concern
and collect surface water samples from two seep areas.
Proposed Shallow Soil & Seep Water Sampling Program
Please refer to the attached Figure 1, Proposed Sample Location Map, which presents
the areas of concern and proposed sampling locations as an overlay of the former
Burlington Industries facility as shown on a March 3, 1977 aerial photograph. Refer to
the tables below for summaries of the soil and seep water sampling plan and the proposed
soil and seep water sample analyses. Sample ID numbers below correlate to the areas of
concern shown on Figure 1.

Crescent Erwin Venture I, LLC Shallow Soil & Seep Water Sampling Program
5.5-Acre Erwin Square Site S&ME Project No. 1054-10-288A
Durham, North Carolina March 28, 2011

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Proposed Shallow Soil & Seep Water Sampling Plan
AOC Matrix Depth
(ft-bgs) Area of Concern Purpose
1 SS
1 to 3 or
3 to 5
Coal storage/cooling tower/transformer
Evaluate shallow
soil quality

2 SS Engine house
3 SS Drum storage area with apparent staining
4 SS Drum storage area with apparent staining
5 SS Machine shop
6 SS Railroad siding
7 SS A/C and electrical shop
8 SS Electrical shop
9 SS Garage
10 SW N/A Northern portion of swale Water quality of
existing seep 11 SW N/A Southern portion of swale
SS = Soil Sample SW = Surface Water Sample

Soil & Seep Water Sample Analysis Summary Table
Parameter Analytical Method Number of
Samples
Soil Samples
Volatile Organic Compounds + 10 TICs EPA Method 8260B 9
Semi-Volatile Organic Compounds + 10 TICs EPA Method 8270C 9
8 RCRA Metals EPA Method 6010/7470 9
PCBs EPA Method 8082 2
Seep Water Samples
Volatile Organic Compounds + 10 TICs EPA Method 6200B 2
Semi-Volatile Organic Compounds + 10 TICs EPA Method 625 2
8 RCRA Metals EPA Method 6010/7470 2
PCBs EPA Method 8082 1

Note: PCBs will be sampled in soil at AOC-1 and AOC-8 only. PCBs will be
sampled in surface water only at the downgradient seep water sample location,
AOC-11.
Crescent Erwin Venture I, LLC Shallow Soil & Seep Water Sampling Program
5.5-Acre Erwin Square Site S&ME Project No. 1054-10-288A
Durham, North Carolina March 28, 2011

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Closure
We have scheduled the fieldwork for this Thursday, March 31, 2011, so please provide us
with your comments regarding the proposed sampling program by Wednesday, March 30.
S&ME welcomes the opportunity to work with you to assist Crescent Erwin Venture I,
LLC in this important Brownfields re-development project. Should you have any
questions regarding this Sampling Program, please call us at [phone].

Sincerely,

S&ME, Inc.

Chris Hamblet, CHMM Tom Raymond, P.E.
Environmental Scientist Environmental Services Manager

Attachment: Figure 1 - Proposed Sample Location Map

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