18015_Craighead Road_Vacuum Monitoring_3rd Quarter 2020_2020.10.16

Via Email
October 16, 2020
NCDEQ – Division of Waste Management Brownfields Program 1646 Mail Service Center Raleigh, NC 27699-1646
Attn: Ms. Jordan Thompson Re: Quarterly Vacuum Monitoring – 3rd Quarter 2020 Craighead Road (Abernethy Lumber) Brownfields Site
Charlotte, Mecklenburg County, North Carolina Brownfields Project No. 18015-14-060 H&H Project No. SHR-001
Dear Jordan:
On behalf of the Philemon NoDa Partners, LLC, Hart & Hickman, PC (H&H) has prepared this
letter report summarizing vapor intrusion mitigation system (VIMS) vacuum monitoring activities
conducted for the 3rd quarter 2020 at the Amaze @ NoDa apartment complex located on the
Craighead Road (Abernethy Lumber) Brownfields property (Brownfields Project No. 18015-14-
060) in Charlotte, Mecklenburg County, North Carolina (Site). The apartment complex consists
of two residential apartment buildings, identified as Building 1 and Building 2 (see Figure 1). An
active VIMS is installed at each building consisting of a sub-slab depressurization system with
sub-slab vent piping, risers to the rooftop, and electric fans located on the risers above the roofline.
The VIMS also contains a 15-mil vapor barrier installed below the ground floor slabs of each
building.

The VIMS installation activities for Building 1 were summarized in the Request for Occupancy /
VIMS Construction Completion – Building 1 (Revision 2), dated March 6, 2020, and the installation
activities for Building 2 were summarized in VIMS Construction Completion Report – Building 2
(Revision 1), dated May 1, 2020. The North Carolina Department of Environmental Quality
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Ms. Jordan Thompson October 16, 2020
Page 2
(DEQ) provided compliance approval for the VIMS installation for Building 1 on March 11, 2020
and for Building 2 on May 1, 2020. As of August 2020, Building 1 has been occupied with
residential tenants. Building 2 is still under construction and tenants are expected to occupy
Building 2 beginning in late October 2020.
In accordance with the Vapor Intrusion Mitigation Plan (VIMP) – Revision 1 dated May 23, 2017
(Work Plan) and Request for VMP Modification dated February 25, 2019 (Work Plan
Modification), sub-slab vacuum measurements below these occupied residential structures are
recorded on a quarterly basis. Building 1 has 18 vacuum monitoring points that are divided across
five slab sections (1A, 1B, 1C, 1D, and 1E) and Building 2 has nine vacuum monitoring points
that are divided across two slab sections (2A and 2B). The locations of the monitoring points are
depicted on the Sheet VMP-1 for Building 1 and Building 2 (Attachment 3).
The quarterly vacuum monitoring data for Building 1 is summarized in Table 1. Because Building
2 was not occupied as of the date of this report, only vacuum measurements from Building 1 are
included. Prior to occupancy of Building 2, the fans will be checked for proper operation and
vacuum measurements will be collected to verify adequate vacuum levels are present below the
building.
H&H completed the 3rd quarter 2020 post-occupancy vacuum monitoring event for Building 1 on
September 29 and October 2, 2020. Results of the 3rd quarter vacuum monitoring indicate
vacuum levels in Building 1 ranged from 47 Pascals (Pa) to 116 Pa within the sub-slab annular
space of Building 1. These vacuum levels are notably greater than 4 Pa, which is the
minimum vacuum deemed acceptable by DEQ to indicate adequate sub-slab depressurization is
occurring below the slab. Furthermore, the vacuum readings were consistent with vacuum
measurements collected during the pre-occupancy (initial) monitoring event conducted in
January 2020. This data indicates that the VIMS installed in Building 1 at the Site continues
to operate as designed and appears to be sufficiently depressurizing the sub-slab below the
residential apartments located on the Craighead Road (Abernethy Lumber) Brownfields site.
Ms. Jordan Thompson October 16, 2020
Page 3

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In accordance with the DEQ-approved VIMP, vacuum measurements will continue to be collected
on a quarterly basis for the first year of operation at both Building 1 and Building 2 and on an
annual basis thereafter. The vacuum monitoring results will be reported to DEQ following each
event.

If you have any questions or require additional information, please do not hesitate to contact us
at 704-586-0007.
Sincerely, Hart & Hickman, PC

Trinh DeSa, PE Brett Lawrence, PG Senior Project Engineer Senior Project Geologist #C1269 – Engineering
#245 - Geology
cc: Mr. Joseph Fielden Jr. (w/ Philemon NoDa Partners, LLC)
Attachments: Attachment 1: Table 1 – VIMS Post-Occupancy Vacuum Monitoring Attachment 2: Figure 1 – Site Layout Map Attachment 3: Building 1 and Building 2 VIMS Layout (VMP-1)

Attachment 1

Table 1
VIMS Post-Occupancy Vacuum Monitoring
Craighead Road (Abernethy Lumber) Brownfields Site
(Brownfields Project No. 18015-14-060)
H&H Project: SHR.001
Initial Monitoring
Event Q3 2020 Q4 2020 Q1 2021
Date 1/13/2020 9/29/2020 -- --
MP‐1 51.3 68.9 ----
MP‐2 54.8 47.3 ----
MP‐3 67.3 80.0 ----
MP‐4 64.8 52.6 ----
MP‐1 76.5 81.6*----
MP‐2 58.8 77.8 ----
MP‐3 64.0 71.9 ----
MP‐4 73.7 82.4 ----
MP‐1 99.1 110.4 ----
MP‐2 100.1 57.8 ----
MP‐1 90.7 112.5 ----
MP‐2 96.4 87.3 ----
MP‐3 91.7 116.0 ----
MP‐4 86.9 116.3 ----
MP‐5 89.2 110.3 ----
MP‐1 65.8 96.6 ----
MP‐2 64.5 95.1 ----
MP‐3 67.3 108.2 ----
Date 2/26/2020 ------
MP‐1 113.0 ------
MP‐2 95.9 ------
MP‐3 90.0 ------
MP‐4 91.6 ------
MP‐5 91.0 ------
MP‐6 73.9 ------
MP‐1 125.8 ------
MP‐2 131.7 ------
MP‐3 129.2 ------
Notes
Vacuum measurements are reported in Pascals (Pa)
-- = not measured; VIMS = vapor intrusion mitigation system; NC = VIMS not complete during monitoring event
* = Monitoring point was measured on 10/2/2020; monitoring point was covered with carpet; carpet cover removed prior
Gray shading indicates the building is currently under construction.
Building 2
Monitoring Point 
ID
2B
1A
1B
2A
Vacuum Monitoring Point Measurements (Pa)
1C
1D
1E
Building 1
Building Number Building Slab 
Section
\\hhfs01\MasterFiles\AAA-Master Projects\Stonehenge Real Estate Group - SHR\SHR-001 Former Abernethy Lumber\VIMS Construction\Quarterly Monitoring\Quarterly VIMS Monitoring Data
Table 1
Hart & Hickman, PC

Attachment 2

REVISION NO. 02923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 GeologyJOB NO. SHR-001DATE: 11-09-19FIGURE NO. 1CRAIGHEAD ROAD(ABERNETHY LUMBER) BROWNFIELDS SITEE. CRAIGHEAD ROAD & PHILEMON AVENUECHARLOTTE, NORTH CAROLINASITE MAPLEGENDSITE PROPERTY BOUNDARYCRAIGHEAD ROAD (ABERNETHY LUMBER)BROWNFIELDS PROPERTY BOUNDARYSURFACE WATER FEATUREE. CRAIGHEAD ROADPHILEMON AVENUENORFOLK SOUTHERN RAILROADN. DAVIDSON STREETPLC, INC.(3737 PHILEMON AVENUE)VACANT LAND(FORMER AGGREGATESTORAGE YARD)TRUCKING FACILITY(132 E. CRAIGHEAD ROAD)LITTLE SUGAR CREEK
SOUTHERN RESOURCES(3826 RALEIGH STREET)CATS TRANSITRIGHT-OF-WAYTRIBUTARY OF LITTLE SUGAR CREEKADV FLEET SERVICES(3600 PHILEMON AVENUE)HAL ABERNETHYCONTRACTING(3934 RALEIGH STREET)PARKING AREA BUILDING FOOTPRINTBUILDING 1BUILDING 2S:\AAA-Master Projects\Stonehenge Real Estate Group - SHR\SHR-001 Former Abernethy Lumber\VIMS Construction\Occupancy Requests\Figures\Site Map.dwg, 11/10/2019 5:09:05 PM, DWG To PDF.pc3

Attachment 3

4" x 4" SCH 40 PVC 90DEGREE ELBOW (TYPICAL)SOLID TO SLOTTED 4" SCH 40 PVCPIPE TRANSITION (TYPICAL)4" x 4" x 4" SCH 40 PVC TEE(TYPICAL)4" PVC VENT PIPE PROTECTION SCREEN(TYPICAL AT ENDS OF SLOTTED PIPE)4" PVC VENT PIPE PROTECTION SCREEN(TYPICAL AT ENDS OF SLOTTED PIPE)POSITION VERTICAL RISER F1-3 WITHINTOILET WALL OF MENS BATHROOM ONGROUND FLOOR. POSITION VERTICALRISER TO EXTEND THROUGH BATHROOMOR TENANT SEPARATION WALL FORUPPER FLOORS.POSITION VERTICAL RISER F1-1WITHIN BATHROOM WALL. POSITIONVERTICAL RISER TO EXTENDTHROUGH BATHROOM OR TENANTSEPARATION WALL FOR UPPERFLOORS.4" TO 4" SCH 40 PVCREDUCER (TYPICAL)F1-21F1-20F1-19F1-18F1-17F1-16F1-15F1-13F1-12F1-14F1-11F1-10F1-9F1-8F1-7F1-5F1-6F1-4F1-2F1-1F1-32" PVC VENT PIPE PROTECTIONSCREEN (TYPICAL AT ENDS OFSOLID PIPE CONNECTORS)4" x 4" x 4" SCH 40 CROSSTEE (TYPICAL)2" PVC VENT PIPE PROTECTIONSCREEN (TYPICAL AT ENDS OFSOLID PIPE CONNECTORS)4"4"4"4"4"4"4"4"4"4"4"4"4"4"4"4"4"4"4"4"4"LOCATE VERTICAL RISERF1-17 WITHIN TOILET ORSHOWER WALLLOCATE VERTICAL RISERF1-12 IN KITCHEN BUILD-OUTBEHIND PANTRYPOSITION PRESSURE MEASURINGPOINT WITHIN HALLWAYPOSITION PRESSURE MEASURINGPOINT WITHIN HALL (OPEN) AREAOF STAIRWELLPOSITION PRESSURE MEASURINGPOINT WITHIN HALL (OPEN) AREAOF STAIRWELLBUILDING 1EBUILDING 1DBUILDING 1CBUILDING 1BBUILDING 1AMP-2MP-1MP-4MP-3MP-3MP-2MP-1MP-4MP-1MP-2MP-5MP-4MP-3MP-2MP-1MP-1MP-2MP-3PROPOSED FOOTER REMOVEDFROM DESIGN PRIOR TOCONSTRUCTIONPROPOSED FOOTER REMOVEDFROM DESIGN PRIOR TOCONSTRUCTIONPROPOSED FOOTER REMOVEDFROM DESIGN PRIOR TOCONSTRUCTIONOPEN AIR PATIO(TYPICAL)OPEN AIR PATIO(TYPICAL)AS-BUILT DRAWINGBUILDING 1REVISION 2MARCH 6, 20203736 Winterfield Road, Suite 102Midlothian, Virginia 23113Telephone [phone]www.2pa.netNC FIRM #51972© 2016 Poole & Poole Architecture, LLCDrawings and specifications are and shall remain theproperty of Poole & Poole Architecture, LLC and shall notbe used or reproduced in whole or part in any formwithout prior written consent of Poole & PooleArchitecture, LLC.Drawing Title:VMP-12923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 GeologyVapor Mitigation Plan Prepared By:PROFESSIONAL APPROVALNODA VILLAGE
an Apartment Community by
PHILEMON NODA PARTMERS, LLC
at 327 EAST CRAIGHEAD, Charlotte, North Carolina 28206LEGENDLOCATION OF VERTICAL RISER AND APPROXIMATE LOCATION OF VACUUM FAN ONBUILDING ROOF AND FAN NUMBER4" DIA SOLID SCH 40 PVC PIPE4" DIA SLOTTED SCH 4O PVC PIPESUB-SLAB PRESSURE MEASURING POINT (SOLID BLUE LINE INDICATES EXTENDED INTAKE LINE;REFER TO DETAILS 8 AND 9 ON SHEET VMP-2)GROUND FLOOR SLAB STEP (HEIGHT VARIES)THICKENED SLABTHICKENED SLAB SEPARATING BUILDING 1 SECTIONS (SEE DETAIL 13 ON SHEET VMP-2)EXTENT OF VAPOR BLOCK VB-15 VAPOR BARRIERGRAY SHADED AREAS REPRESENT OPEN AIR PATIOSNOTES:1.GROUND FLOOD SLAB DESIGN INCLUDES POST-TENSION CABLES.2.FOUNDATION PLAN AND DETAILS PROVIDED BY POOLE & POOLE ARCHITECTURE OFMIDLOTHIAN, VA AND DAVIS & CHURCH STRUCTURAL ENGINEERS OF APLHARETTA,GA AND ARE SUBJECT TO COPYRIGHT PROTECTION.F1-103/06/20\\hhfs01\MasterFiles\AAA-Master Projects\Stonehenge Real Estate Group - SHR\SHR-001 Former Abernethy Lumber\VIMS Construction\Occupancy Requests\Figures\Building 1 - AS-Built_VMP-1_Rev 2.dwg, 3/6/2020 5:07:24 PM, DWG To PDF.pc3
F2-12F2-11F2-10F2-9F2-8F2-7F2-6F2-5F2-4F2-3F2-2F2-12" x 2" SCH 40 PVC 90DEGREE ELBOW (TYPICAL)SOLID TO SLOTTED 2" SCH 40 PVCPIPE TRANSITION (TYPICAL)2" x 2" x 2" SCH 40 PVC TEE(TYPICAL)2" PVC VENT PIPE PROTECTION SCREEN(TYPICAL AT ENDS OF SLOTTED PIPE)3" TO 2" SCH 40 PVCREDUCER (TYPICAL)2" PVC VENT PIPE PROTECTIONSCREEN (TYPICAL AT ENDS OFSOLID PIPE CONNECTORS)2" x 2" x 2" SCH 40 CROSSTEE (TYPICAL)3"POSITION VERTICAL RISER F2-12 INTENANT WALL, NOT IN STAIRWELLCOORDINATE VERTICAL RISER F2-5POSITION IN SINK WALL OF UNIT B3 FORUPPER FLOORS (RISER LOCATION MAYBE ADJUSTED IN FIELD)POSITION VERTICAL RISER F2-2WITHIN BATHROOM WALLBUILDING 2ABUILDING 2BMP-6MP-5MP-4MP-2MP-1MP-3MP-1MP-2MP-3AS-BUILT DRAWINGBUILDING 2APRIL 2, 20203736 Winterfield Road, Suite 102Midlothian, Virginia 23113Telephone [phone]www.2pa.netNC FIRM #51972© 2016 Poole & Poole Architecture, LLCDrawings and specifications are and shall remain theproperty of Poole & Poole Architecture, LLC and shall notbe used or reproduced in whole or part in any formwithout prior written consent of Poole & PooleArchitecture, LLC.Drawing Title:VMP-12923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 GeologyVapor Mitigation Plan Prepared By:PROFESSIONAL APPROVALNODA VILLAGE
an Apartment Community by
PHILEMON NODA PARTMERS, LLC
at 327 EAST CRAIGHEAD, Charlotte, North Carolina 28206 04/02/20LEGENDLOCATION OF VERTICAL RISER AND APPROXIMATE LOCATION OF VACUUM FAN ONBUILDING ROOF AND FAN NUMBER4" DIA SOLID SCH 40 PVC PIPE4" DIA SLOTTED SCH 4O PVC PIPESUB-SLAB PRESSURE MEASURING POINT (SOLID BLUE LINE INDICATES EXTENDED INTAKE LINE;REFER TO DETAILS 8 AND 9 ON SHEET VMP-2)GROUND FLOOR SLAB STEP (HEIGHT VARIES)THICKENED SLABTHICKENED SLAB SEPARATING BUILDING 1 SECTIONS (SEE DETAIL 13 ON SHEET VMP-2)EXTENT OF VAPOR BLOCK VB-15 VAPOR BARRIERGRAY SHADED AREAS REPRESENT OPEN AIR PATIOSF1-1NOTES:1. GROUND FLOOD SLAB DESIGN INCLUDES POST-TENSION CABLES.2. FOUNDATION PLAN AND DETAILS PROVIDED BY POOLE & POOLE ARCHITECTURE OFMIDLOTHIAN, VA AND DAVIS & CHURCH STRUCTURAL ENGINEERS OF APLHARETTA,GA AND ARE SUBJECT TO COPYRIGHT PROTECTION.S:\AAA-Master Projects\Stonehenge Real Estate Group - SHR\SHR-001 Former Abernethy Lumber\VIMS Construction\Occupancy Requests\Building 2\NDS1.2_H&H_rev04022020.dwg, 4/2/2020 4:03:19 PM, DWG To PDF.pc3