25075_Lake Wheeler Assemblage_Bldg B_VIMP Compliance Review Letter_20230825

August 25, 2023

Sent Via E-mail Mr. Dan Nielsen, PE Mid-Atlantic Associates, Inc.
409 Rogers View Court
Raleigh, North Carolina 27610 [e-mail] Subject: Vapor Intrusion Mitigation Plan Compliance Review
Lake Wheeler Assemblage – Building B
Raleigh, Wake County Brownfields Project No. 25075-21-092 Dear Mr. Nielsen:

The North Carolina Department of Environmental Quality Brownfields Redevelopment Section (DEQ Brownfields) received and reviewed the Vapor Intrusion Mitigation System Design Submittal, Lake Wheeler Assemblage, Building B (VIMP), dated August 4, 2023. DEQ Brownfields has found this VIMP to be in compliance with the DEQ Brownfields Vapor
Intrusion Mitigation System (VIMS) Design Submittal Requirements dated March 2022.
Consistent with standard brownfields vapor intrusion provisions which will be included in the brownfields agreement for this project, an essential component of public health protection for this design is the professional engineer’s seal of these documents that the proposed design will
be effective at mitigating the potential for vapor intrusion at the property and protecting public
health. Furthermore, the safe occupancy of the building will be evaluated upon system effectiveness, sub-slab soil gas sampling, and indoor air sampling as required by Sections 4 and 5 of the VIMP. In addition, DEQ Brownfields reserves the authority to require confirmation of efficacy in the future.

Please be advised that this design compliance review from DEQ Brownfields does not waive any
applicable requirement to obtain any necessary permits, licenses or certifications which may be
required from other state or local entities.

Dan Nielsen, PE August 25, 2023
Page 2

If you have any questions, please feel free to contact me at 919-609-2334, or via e-mail at
[e-mail].
Sincerely,
Holly Samaha-Smith, PE Project Manager Brownfields Redevelopment Section
ec: Bryan Kane, SLI Capital Chuck Hoffman, Mid-Atlantic Associates Nolen Barefoot, Mid-Atlantic Associates Kelly Johnson, DEQ Brownfields