15032_800 Chatham_SIR_20220421

DWM Brownfields Inspection Report
Submitted By: jkslaughter_ncdenr
Submitted Time: 04/22/2022 1:33 PM

I. Inspection Information
Date & Time: 04/21/2022 10:19 AM Inspection Type: Meeting

Brownfields Staff:
Kevin Slaughter, Tyler Pearson
Other Personnel:
800 Chatham Maintenance Superintendent.
Location:
Lat: 36.1048562, Long: -80.2551359,

Brownfields Inspection Report: 800 Chatham Road, 15032-11-034
04/21/2022 10:19 AM
Page 2 of 7

II. Project Information
Number: 15032-11-034 Name: 800 Chatham Road
Address: 800 Chatham Road
Specifically Bldgs. 12-15
City: Winston Salem

County: Forsyth

III. Environmental

Current Use of Property: Residential
Structures on Property: Existing Structures Violation: No

Vapor Mitigation Systems: Observed Vapor Mitigation Violation: Yes

Use of Surface Water or Groundwater: Not Observed Water Use Violation: No

Exposed Soils: Not Observed Exposed Soils Violation: No

Use of Basements: Observed Basement Violation: No
Summary: Active and passive VIMS present on the property. The western building
Buildings 12-15, which were inspected consists of sub-slab and crawlspace suction lines.
Crawlspace, interior and roof mounted active fans are present on the western building
(Photos 1, 2 and 5). During the Site Inspection, inspectors checked that all fans were
operational, and performed limited vacuum and smoke testing. As noted in prior site
inspections, there are two crawlspace riser discharge locations approximately 4 ft above
grade in close proximity to a sidewalk (Photo 3). See Inspector Comments for additional
details. Previously agreed to additional assessment of the mitigation system and site
occupancy conditions have stalled and the most recent pressure monitoring results were
inadequate. DEQ is working with the owner to return the property to compliance.
Summary: N/A

Summary: Former mill building that has been renovated into residential apartments.

Summary: N/A

Summary: There are maintenance areas, common hallways, residential units, and atrium
that are at least partially below surrounding grade (Photo 2).
Brownfields Inspection Report: 800 Chatham Road, 15032-11-034
04/21/2022 10:19 AM
Page 3 of 7

Storage of Chemicals: Not Observed Chemical Violation: No

Groundwater Monitoring Wells: Not Observed Monitoring Well Violation: No

Current Exposure to Public/Public Risk:

Summary: N/A

Condition:
Summary: N/A

Although there are current VI concerns within buildings 12-15, much of the western
building is currently unoccupied per a recent occupancy list provided to DEQ. In addition,
buildings 12-15 are connected to the main lobby, leasing office, and other common
spaces via a shared hallway. Risk to the building occupants including staff is currently
unknown but will be addressed in the forthcoming assessment report.

Brownfields Inspection Report: 800 Chatham Road, 15032-11-034
04/21/2022 10:19 AM
Page 4 of 7

IV. Inspector Comments

V. PHOTOGRAPHS

Photo 1: Active VIMS fan and horizontal riser piping visible within crawlspace.
The Site Inspection was performed to confirm the status of the VIMS operating within
Buildings 12-15 which is used as an apartment building. A preliminary check of the
crawlspace fans indicated they were operational. Each of the rooftop sub-slab system
fans were checked for operation and it was found that the fan located on the northwest
corner of the building was unplugged, possibly during recent pilot testing performed by
Geosyntec (Photo 5). The fan was plugged back in by the maintenance staff, and all of
the roof-top fans were then operational. Vacuum measurements were checked at two
roof-top fans and vacuums ranged from -3.346” WC to -4.266” WC. Vacuum
measurements were also taken at two access ports within the building, and vacuum
influence ranged from 0.000 to 0.049” WC (Photo 6). Smoke pen testing was performed
at several locations, including at the base of wood columns within the atrium. No short-
circuiting was observed during the very limited smoke testing performed (Photo 7).

Brownfields Inspection Report: 800 Chatham Road, 15032-11-034
04/21/2022 10:19 AM
Page 5 of 7

Photo 2: Steel riser piping and active VIMS fan exiting crawlspace. Soil level on the other side
of the vapor membrane is approximately level with the top of wallboard. Crawlspace riser exits
side of building (Photo 3).

Photo 3: Crawlspace VIMS discharge approximately 4 ft above grade adjacent to sidewalk.
Brownfields Inspection Report: 800 Chatham Road, 15032-11-034
04/21/2022 10:19 AM
Page 6 of 7

Photo 4: Labeling, sample port, and flow control valve were present on each PVC sub-slab
suction point. All sub-slab suction points discharge from roof mounted fans.

Photo 5: Roof mounted fan B-1 on the northwestern portion of the roof. Although unplugged
when checked, it was plugged back in, and all the roof-top fans were then operational.
Brownfields Inspection Report: 800 Chatham Road, 15032-11-034
04/21/2022 10:19 AM
Page 7 of 7

Photo 6: Vacuum measurement of 0.049” WC at access panel P-12-2 after disconnecting U-tube
manometer visible in photo. Vacuum was also checked at access panel P-14-1 and no vacuum
influence was observed (< 0.000” WC).

Photo 7: Smoke pen testing of wood column within atrium. Although smoke would enter crack,
it appeared to be moving upward, and did not appear to be pulled below the floor slab due to
short circuiting.