WS-29656_48783_CA_O_20230505_response-to-CSA request

\\employees.root.local\env\ECC\Greenville\WPGVL\PJT2\539311\0000\000005\L5393110000PH5-001_NCDEQ - Extension Request.docx
May 5, 2023
Mr. James W. Brown
Regional Supervisor
North Carolina Department of Environmental Quality
Division of Waste Management
Underground Storage Tank Section
450 West Hanes Mill Road, Suite 300
Winston-Salem, North Carolina 27105
Subject: Request for Report Extension
Comprehensive Site Assessment (CSA)
TForce Freight – Greensboro, Guilford County, North Carolina Incident No. 48783; Risk Classification High; Ranking 160D
Dear Mr. Brown:
TForce Freight (TForce) was issued a letter from the North Carolina Department of Environmental Quality
(NCDEQ) on March 7, 2023, requesting that TForce complete a Comprehensive Site Assessment (CSA) at their
facility located at 4411 Groometown Road, Greensboro, North Carolina. The letter issued by the state was in
response to the Limited Site Assessment Report and Initial Abatement Action Report submitted by TForce on
February 23, 2023.
TForce has initiated CSA activities at the site per Title 15A NCAC 2N .0706 and Title 15A NCAC 02L .0106(g). To
date, verification groundwater sampling has been completed on the two existing permanent groundwater
monitoring wells to verify and confirm constitutions of concern (COCs) in groundwater. Performance of a vapor
intrusion assessment and a potable water well construction investigation have also been scheduled.
Unfortunately, availability of qualified drilling contractors has delayed investigations into the horizontal and
vertical extent of COCs in soil and groundwater. Current estimates from drillers have us in the field in late May
to early June. Our plan is to utilize a phased approach to delineation by employing DPT sampling to assess
extent, followed by installation and sampling of permanent monitoring wells.
For these reasons, we are respectfully requesting a 90-day extension for the submittal of the CSA report. We
believe that this time frame will allow sufficient time to complete the investigation activities and prepare a
report that meets NCDEQ’s requirements for a CSA Report. If there are any additional delays with respect to the
data, we will let you know.
Sincerely,
TRC Engineering, Inc.

David Szynal
Project Manager
cc: Gene Mao - Hydrogeologist Guilford County Government
Bill Preece, TForce
Rachel Brown, TForce
Lisa Clark, P.G. - TRC