RA-834_5665_CA_LTRRPT_20230221

1044 Washington Street
Raleigh, NC 27605
[phone]
www.CatlinUSA.com
Wilmington, NC | Raleigh, NC | Washington, NC | Atlanta, GA

ENVIRONMENTAL | CIVIL | GEOTECHNICAL

Wilmington, NC | Raleigh, NC | Washington, NC | Atlanta, GA | Charleston, SC

February 21, 2023
North Carolina Department of Environmental Quality Division of Waste Management UST Section Attn: Ms. Linda Blalock 1646 Mail Service Center Raleigh, NC 27699-1646 Re: Letter Report Oxford Commons Shopping Center 3500 N. Roxboro Street, Durham, NC 27704 Incident Number: 5665 Risk Classification: L035E CATLIN Project No. 221073
Dear Ms. Blalock,
CATLIN Engineers and Scientists (CATLIN) is pleased to provide you with this letter report documenting field activities performed in general accordance with CATLIN proposal number 221073.02P, prepared February 7, 2023. Services were authorized by the North Carolina Environmental Quality (NCDEQ) Task Authorization (TA) #02, accepted February 8, 2023, and Contract Number N122019D. The approved scope of services for this Task Authorization included:
• Sample monitoring well MW-12;
• Analyze one groundwater sample per Standard Method (SM) 6200B plus ethylene dibromide (EDB), methyl tert-butyl ether (MTBE) and diisopropyl ether (DIPE);
• Photograph the site redevelopment conditions, the approximate historical monitoring well locations, and the proposed monitoring well locations and conditions; and
• Prepare a letter report documenting the findings.
The Oxford Commons Shopping Center (Oxford Commons) site is located at 3500 N. Roxboro St., Durham, North Carolina (See Figures in Attachment A). Three underground storage tanks (USTs) previously operated at the site. Two 10,000-gallon and one 500-gallon gasoline USTs
were removed from the site in 1991. A petroleum release was discovered during tank closure activities. Currently, a Caliber Car Wash facility is being constructed on-site and appears to be largely complete. CATLIN conducted field activities on February 15, 2023 in accordance with the approved TA. Potential hazards were evaluated before beginning field work and documented on an electronic Job Hazard Analysis (JHA) form, provided in Attachment B. On February 15, 2023, CATLIN personnel mobilized to the site to conduct the approved TA #02 field activities. Upon arrival, the well pad for MW-12 was situated at an angle and the surrounding
grassy area had been relandscaped. When the cover was removed from the well, CATLIN observed dirt, assorted-size pieces of broken grout, and the well cap/lock placed randomly inside.
February 21, 2023
Page 2 of 2
NCDEQ;5665_Oxford Commons Shopping Center CATLIN Engineers and Scientists
CATLIN Project No. 221073 February 2023
The metal well shield was crushed and the PVC casing was not visible from above. CATLIN was
not able to sample MW-12 based on its condition. Additionally, monitoring well MW-1 was not
observed. Based on the approximate former location of MW-1 and the landscaping done in the
general area, CATLIN concluded that this well had also been destroyed during site activities. Site
photographs showing the destroyed monitoring well MW-12, the approximate former location of
MW-1 (assumed destroyed), the approximate former location of monitoring wells MW-10 and
MW-10D (formerly abandoned), and the general redevelopment/construction area are included in
Attachment C.

Recommendations

CATLIN recommends abandoning the on-site groundwater monitoring well MW-12 and installing
a replacement well. In addition, CATLIN recommends installing additional monitoring wells to
replace wells abandoned prior to construction activities.

CATLIN Engineers and Scientists will proceed upon notification of your approval. Should you
have any questions or require additional information, please contact us at [phone].

Sincerely,

Sean O’Neil, PE
Project Manager

Attachments:
A Figures
B Daily Job Hazard Analysis
C Site Photographs

NCDEQ;5665_Oxford Commons Shopping Center CATLIN Engineers and Scientists
CATLIN Project No. 221073 February 2023
ATTACHMENT A FIGURES
FIGUREPROJECTTITLE
1SITE VICINITY MAP
SITE LOCATION
R
O
X
B
ORO
S
T
OLD OXFORD STINTERSTATE 85
Copyright:© 2013 National Geographic Society, i-cubed
2,000 0 2,000 4,0001,000
Feet
³
OXFORD COMMONS SHOPPING CENTER3500 N ROXBORO STDURHAM, NC
INCIDENT NO.JOB NO.DATE SCALE DRAWN BY/CHECKED BY5665221073FEB 2023 AS SHOWN KMC/SJO
FIGUREPROJECTTITLE
2SITE MAP
!>
!>
!>
!>
!>
!>
!>
!?
!>
!?
!(>!>
!?
ROXBORO ST
O L D O X F O R D S T
MW-6
MW-12MW-9
MW-1
MW-10*MW-10D*
MW-2
MW-5
MW-7
MW-8
MW-4
MW-3
MW-11
APPROXIMATE LOCATION OF FORMER UST BASINS
APPROXIMATE LOCATION OF FORMER DISPENSER ISLAND
Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community
120 0 120 24060
Feet
³
OXFORD COMMONS SHOPPING CENTER3500 N ROXBORO STDURHAM, NC
INCIDENT NO.JOB NO.DATE SCALE DRAWN BY/CHECKED BY5665221073FEB 2023 AS SHOWN KMC/SJO
NOTES: 1. Well and tank locations were obtained from previous reportsprepared by other consultants and are approximate.2. * = Well abandoned by CATLIN on 03/25/2022.
Parcel Boundary
Monitoring Well(Type II)!>
Approximate Location of Former UST System
Abandoned Monitoring
Well (Deep)!(>
LEGEND
Destroyed Monitoring Well (Type II)!>Abandoned Monitoring
Well (Type II)!>

NCDEQ;5665_Oxford Commons Shopping Center CATLIN Engineers and Scientists
CATLIN Project No. 221073 February 2023
ATTACHMENT B DAILY JOB HAZARD ANALYSIS
Source Exposure Limit
Groundwater and/or soil vapor 0.5 ppm TLV-TWA ACGIH
Groundwater and/or soil vapor 100 ppm TLV-TWA ACGIH
Groundwater and/or soil vapor 20 ppm TLV-TWA ACGIH
Groundwater and/or soil vapor 100 ppm TLV-TWA ACGIH
Groundwater and/or soil vapor 50 ppm TLV-TWA ACGIH
Groundwater and/or soil vapor 10 ppm TLV-TWA ACGIH
Source Exposure Limit
atmosphere N/A
atmosphere N/A
surroundings N/A
Exposure Potential
Likely
Likely
Likely
Start Stop
10:45 11:45
11:45 12:00
12:00 14:30
14:30 16:15
Date and Time:
02/15/23 @ 12:00
ppm
NAPHTHALENE ppm
Physical Hazards
Name of Physical Hazard Exposure Level/ Potential
* Gas and/or Diesel
Overcast, breezy, low-60's
Site-Specific Job Hazard Analysis
Location Where Task/Operation Performed
Oxford Commons Shopping Center, Durham, NC
Task/Operation
Gauge and Sample Well
Employee Certifying this JHA
Print Name: Benjamin J. Ashba, P.G.Signature:
Operational Phase
Monitoring
Date(s) this JHA
Conducted:
02/15/2023
Weather:
PERSONNEL ONSITE
Name and Company (Print)Signature
Chemical Hazards
Potential Chemicals Concentration
BENZENE ppm
ETHYL BENZENE ppm
TOLUENE ppm
XYLENE, ALL ISOMERS ppm
METHYL TERT-BUTYL ETHER
Snakes surroundings
Poison Plants (Ivy, Oak, and/or Sumac)surroundings
Equipment Used:PPE D
Van #59 Mileage:
Mob and travel to site
safety briefing
Observed MW-12 well pad was no longer level, opened and dug out much dirt, grout pieces, lock/cap, took many
pictures and notified BA/SO. Returned debris to well cavity and replaced lid. Walked remainder of site, took many
pictures and evaluated approximate positions of former wells (more pics). Spoke with SMM and BA.
Sandra Miller / CATLIN
Departed site, proceeded to Pace to drop off samples from previous two sites,
returned to Raleigh office and demobed van.
Start:End:
DAILY TASK
Insect bites and stings
Cold Weather Operations Unlikely
Heat (ambient)
Biological Hazards
Name of Biological Hazard Source
Unlikely
Slips/Trips/Falls Likely
surroundings

NCDEQ;5665_Oxford Commons Shopping Center CATLIN Engineers and Scientists
CATLIN Project No. 221073 February 2023
ATTACHMENT C SITE PHOTOGRAPHS
ATTACHMENT C SITE PHOTOGRAPHS – FEBRUARY 15, 2023
NCDEQ; 5665_Oxford Commons Shopping Center CATLIN Engineers and Scientists CATLIN Project No. 221073 February 2023

View of site, facing north.

View of MW-12, facing northwest.
ATTACHMENT C SITE PHOTOGRAPHS – FEBRUARY 15, 2023
NCDEQ; 5665_Oxford Commons Shopping Center CATLIN Engineers and Scientists CATLIN Project No. 221073 February 2023

View of MW-12.

View showing MW-12 well pad askew.
ATTACHMENT C SITE PHOTOGRAPHS – FEBRUARY 15, 2023
NCDEQ; 5665_Oxford Commons Shopping Center CATLIN Engineers and Scientists CATLIN Project No. 221073 February 2023

View showing damaged PVC casing.
ATTACHMENT C SITE PHOTOGRAPHS – FEBRUARY 15, 2023
NCDEQ; 5665_Oxford Commons Shopping Center CATLIN Engineers and Scientists CATLIN Project No. 221073 February 2023

View of approximate former location of MW-1, facing north (shown by white notebook).

View of approximate former location of MW-10/10D, facing south (shown by white notebook).
ATTACHMENT C SITE PHOTOGRAPHS – FEBRUARY 15, 2023
NCDEQ; 5665_Oxford Commons Shopping Center CATLIN Engineers and Scientists CATLIN Project No. 221073 February 2023

View of approximate former location of MW-10/10D, facing northwest (shown by white
notebook).
View of approximate former location of MW-10/10D (see arrow), facing south and showing potential replacement location.