HomeMy WebLinkAbout18045-Seneca Place-IA-SS Vapor Sampling Report-Suite H-Response-20240501ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
MICHAEL SCOTT
Director
NORTH CAROLINA
Environmental Quality
May 1, 2024
Sent Via E-mail
Mr. Mark Good
Seneca Place partners, LLC
c/o New Forum
9224 Kings Parade Boulevard, Suite 2101
Charlotte, NC 28273
mgood@newforum.net
Subject: Indoor Air and Sub -Slab Vapor Sampling Report
Suite H
Seneca Place Shopping Center
Charlotte, Mecklenburg Name County
Brownfields Project No. 18045-14-060
Dear Mr. Good:
The North Carolina Department of Environmental Quality (DEQ) Brownfields Redevelopment
Section (BRS) has received and reviewed the Indoor Air and Sub -Slab Vapor Sampling Report for
Suite H dated November 15, 2021 (Report) for the above referenced Brownfields Property. The
Report summarizes the work performed in accordance with the approved Vapor Sampling Work
Plan Revision 2.0 (Work Plan) dated August 6, 2020. The Work Plan was prepared as required
by the Environmental Management Plan dated July 9, 2020. The work was to be performed to
evaluate if construction/upfit activities, specifically the cutting of the slab to install utilities, created
a preferential pathway that allowed sub -slab vapors into the indoor air space of the building.
Review of the Report indicates that the work performed was in general accordance with the
approved Work Plan. BRS reviewed the analytical data provided in the Report for soil gas as well
as sub -slab vapor sampling and evaluated the data using the DEQ Risk Calculator. Notably, three
compounds appeared to be contributing factors to the cumulative risk. While the Report indicates
these are from chemicals stored on the property, the data provided did not document or demonstrate
this sufficiently.
Therefore, sub -slab and indoor air samples at locations 1 and 3 from Suite H be recollected and
analyzed in accordance with methodologies outlined in the approved Vapor Sampling Work Plan
Revision 2.0 (Work Plan) dated August 6, 2020. Please ensure that prior to sampling all chemicals
stored on -site are thoroughly documented and, to the extent possible, removed prior to sampling.
D E Q�� North Carolina Department of Environmental Quality I Division of Waste Management
217 West Jones Street 1 1646 Mail Service Center I Raleigh, North Carolina 27699-1646
NORTH CAROLINA -
DewrtmemmW—mmenmiauai\ 919.707.8200
If you have any questions, please feel free to contact me at 980-297-4623, or via e-mail at
joselyn.harriger@deq.nc.gov.
Sincerely,
Joselyn Harriger, PG
Interim Property Management Branch Head
Brownfields Property Management Branch
ec: Scott Young, PG
E Q Q North Carolina Department of Environmental Quality I Division of Waste Management
217 West Jones Street 1 1646 Mail Service Center I Raleigh, North Carolina 27699-1646
NORTH CAROLINA _
OepammammEmimnmameiausil /`� 919.707.8200