18015_Craighead_Amaze NODA_Quarterly Vacuum Monitoring_2nd Q 2021

Via Email
June 17, 2021

NCDEQ – Division of Waste Management Brownfields Program 1646 Mail Service Center
Raleigh, NC 27699-1646
Attn: Ms. Carolyn Minnich Re: Quarterly Vacuum Monitoring – 1st and 2nd Quarter 2021
Craighead Road (Abernethy Lumber) Brownfields Site
Charlotte, Mecklenburg County, North Carolina Brownfields Project No. 18015-14-060 H&H Project No. SHR-001

Dear Carolyn:
On behalf of the FortyTwo, LLC, Hart & Hickman, PC (H&H) has prepared this letter report
summarizing vapor intrusion mitigation system (VIMS) vacuum monitoring activities conducted
for the 1st and 2nd quarter 2021 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 Attachment 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
Ms. Carolyn Minnich
June 17, 2021
Page 2

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(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 and Building 2 has been occupied since December 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 2).

H&H completed post-occupancy vacuum monitoring for Building 1 and Building 2 on February
9, 2021 (1st quarter 2021) and May 24, 2021 (2nd quarter 2021). The results of both vacuum
monitoring events are provided in the attached Table 1 (Attachment 3). The 1st quarter vacuum
monitoring indicated that vacuum levels within Building 1 ranged from 15.8 Pascals (Pa) to 125.4
Pa and that vacuum levels in Building 2 ranged from 78.5 Pa to 146.2 Pa. The 2nd quarter vacuum
monitoring indicated that vacuum levels within Building 1 ranged from 17.7 Pa to 108.3 Pa and
that vacuum levels within Building 2 ranged from 87.1 Pa to 153.7 Pa.

Vacuum levels measured in each building during the 1st quarter 2021 and 2nd quarter 2021 were
generally stable or slightly increased with the previous data, with the exception of vacuum at
monitoring point MP-4 located in Slab Section A in Building 1. The vacuum observed at MP-4
during 1st and 2nd quarter 2021 was stable with vacuum levels of 15.8 Pa and 17.7 Pa, respectfully.
However, these vacuum levels decreased from the previous monitoring events. If vacuum levels
decrease further, additional troubleshooting will be performed to determine the cause and potential
solutions or repairs to maintain adequate vacuum levels at this location.

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Ms. Carolyn Minnich
June 17, 2021
Page 3
All vacuum measurements collected during 1st quarter 2021 and 2nd quarter 2021 were 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, during both quarterly
monitoring events, H&H inspected the fans on the roof of each building and all fans were
operational and no issues were noted. Copies of the O&M forms completed by H&H are attached
(Attachment 4). This data indicates that the VIMS installed in Building 1 and Building 2 at the
Site continues to operate as designed and appears to be sufficiently depressurizing the sub-slab
below the residential apartment buildings at the Site.
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. To date, three quarterly vacuum monitoring events have occurred at each
building after both buildings were occupied. Therefore, another quarterly event will be conducted
in 3rd quarter 2021. Following this next quarterly update, future vacuum monitoring will occur on
an annual schedule, unless the data indicates that additional vacuum monitoring may be warranted.
Maintenance staff at Building 1 and Building 2 will be responsible for completing the monthly
O&M forms to ensure the continued performance of the VIMS.
Ms. Carolyn Minnich
June 17, 2021
Page 4

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

Sincerely,
Hart & Hickman, PC Seal:

Trinh DeSa, PE
Senior Project Engineer

#C1269 – Engineering #245 – Geology cc: Mr. Kevin Slaughter, NCDEQ
Attachments: Attachment 1: Figure 1 – Site Map Attachment 2: Building 1 and Building 2 VIMS Layout (VMP-1) Attachment 3: Table 1 – VIMS Post-Occupancy Vacuum Monitoring Attachment 4: 1st and 2nd Quarter Fan O&M Forms

Attachment 1
Figure 1- Site Map

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 2
Building 1 and Building 2 VIMS Layout (VMP-1)
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

Attachment 3
Table 1- VIMS Post-Occupancy Vacuum Monitoring

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 Q2 2021
Date 1/13/2020 9/29/2020 11/20/2020 2/9/2021 5/24/2021
MP‐1 51.3 68.9 58.2 34.8 45.2
MP‐2 54.8 47.3 38.1 39.4 54.0
MP‐3 67.3 80.0 51.3 50.3 61.0
MP‐4 64.8 52.6 37.3 15.8 17.7
MP‐1 76.5 81.6* 67.7 65.5 78.5
MP‐2 58.8 77.8 54.0 52.4 65.4
MP‐3 64.0 71.9 55.2 56.5 65.1
MP‐4 73.7 82.4 59.2 61.4 70.3
MP‐1 99.1 110.4 82.1 79.2 88.4
MP‐2 100.1 57.8 38.1 49.1 93.1
MP‐1 90.7 112.5 91.3 87.8 104.9
MP‐2 96.4 87.3 89.1 80.7 108.3
MP‐3 91.7 116.0 88.3 72.4 103.8
MP‐4 86.9 116.3 89.6 84.1 102.6
MP‐5 89.2 110.3 86.3 82.8 98.5
MP‐1 65.8 96.6 86.8 125.4 95.5
MP‐2 64.5 95.1 87.1 99.1 93.4
MP‐3 67.3 108.2 84.6 91.1 97.3
Date 2/26/2020 -- 11/20/2020 2/9/2021 5/24/2021
MP‐1 113.0 -- 123.7 125.4 128.3
MP‐2 95.9 -- 92.6 99.1 106.5
MP‐3 90.0 -- 84.4 91.1 100.0
MP‐4 91.6 -- 76.1 87.9 99.5
MP‐5 91.0 -- 71.2 84.8 94.6
MP‐6 73.9 -- 62.0 78.5 87.1
MP‐1 125.8 -- 119.4 138.9 139.5
MP‐2 131.7 -- 132.1 146.2 153.7
MP‐3 129.2 -- 137.1 126.3 142.9
Notes
Vacuum measurements are reported in Pascals (Pa).
-- = Not measured; VIMS = Vapor Intrusion Mitigation System; NC = VIMS not complete during monitoring event.
Gray shading indicates the building was currently under construction.
* = Monitoring point was measured on 10/2/2020; monitoring point was covered with carpet; carpet cover removed
prior to measurement.
Building 2
Monitoring Point 
ID
2B
1A
1B
2A
1C
1D
1E
Building 1
Building Number Building Slab 
Section
Vacuum Monitoring Point Measurements (Pa)
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Table 1
Hart & Hickman, PC

Attachment 4
1st and 2nd Quarter Fan O&M Forms

NODA Village
Vapor Mitigation System
Monthly Fan O&M Form
Date___________________Inspector_____________________________
Comments
Yes No Note any damage, malfunctions, repairs needed, etc.
F1-1
F1-2
F1-3
F1-4
F1-5
F1-6
F1-7
F1-8
F1-9
F1-10
F1-11
F1-12
F1-13
F1-14
F1-15
F1-16
F1-17
F1-18
F1-19
F1-20
F1-21
F2-1
F2-2
F2-3
F2-4
F2-5
F2-6
F2-7
F2-8
F2-9
F2-10
F2-11
F2-12
2. If fan is not operating or damage is observed, contact Hart & Hickman at 704-586-0007.
Fan Operating?
Building 1
Building 2
1. Vapor mitigation fans shall be inspected on a monthly basis and these forms shall be submitted to the DEQ Brownfields Program on a
yearly basis.
Fan Number
2/9/2021 Amir Stewart (Hart & Hickman)
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
NODA Village
Vapor Mitigation System
Monthly Fan O&M Form
Inspector_____________________________
Comments
Yes No Note any damage, malfunctions, repairs needed, etc.
F1-1
F1-2
F1-3
F1-4
F1-5
F1-6
F1-7
F1-8
F1-9
F1-10
F1-11
F1-12
F1-13
F1-14
F1-15
F1-16
F1-17
F1-18
F1-19
F1-20
F1-21
F2-1
F2-2
F2-3
F2-4
F2-5
F2-6
F2-7
F2-8
F2-9
F2-10
F2-11
F2-12
2. If fan is not operating or damage is observed, contact Hart & Hickman at 704-586-0007.
Fan Operating?
Building 1
Building 2
1. Vapor mitigation fans shall be inspected on a monthly basis and these forms shall be submitted to the DEQ Brownfields Program on a
yearly basis.
Fan Number
5/24/2021Date__________________ Amir Stewart (Hart & Hickman)
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X