18015_Craighead Rd_VIMS Construction Completion Report - Building 2_Rev 1 and Brownfields Compliance Letter_050120

May 1, 2020

Sent Via E-mail
Joseph A. Fielden Jr.
Philemon NoDa Partners, LLC
308 East Craighead Road
Charlotte, NC 28206
[e-mail]

Subject: Vapor Mitigation Compliance Review
Craighead Road (Abernethy Lumber): Building 2
308 E. Craighead Rd and 3712 Philemon Ave
Charlotte, Mecklenburg County
Brownfields Project No. 18015-14-060

Dear Mr. Fielden:
The North Carolina Department of Environmental Quality (DEQ) Brownfields Program received and
reviewed the Vapor Intrusion Mitigation System Construction Completion Report – Building 2
(Revision 1) (Report) dated May 1, 2020 prepared by Hart & Hickman, PC for the above referenced
Brownfields Property. The Report indicates that the installation of the vapor mitigation system was
conducted in accordance with the requirements of the approved Vapor Intrusion Mitigation Plan
(Work Plan) dated May 23, 2017, and Request for VMP Modification dated February 25, 2019 (Work
Plan Modification). Based on these documents, the DEQ Brownfields Program has determined that
Building 2 as described in the Report is currently in compliance with Land Use Restriction 4.b. of the
Notice of Brownfields Property. DEQ Brownfields understands that ongoing monitoring will be
conducted in accordance with the approved Work Plan and Work Plan Modification.

Please be advised that this 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. If you have any questions, please feel free to contact me at 704-235-2151, or via e-mail
at [e-mail].

Sincerely,
J. Kevin Slaughter
Environmental Specialist II, Brownfields Property Management Unit
ec: Joselyn Harriger, DEQ
Trinh DeSa, PE, Hart & Hickman, PC

Vapor Intrusion Mitigation System
Construction Completion Report –
Building 2

Craighead Road (Abernethy Lumber)
Brownfields Site
NoDa Village Apartments
Charlotte, North Carolina
Brownfields Project No. 18015-14-060

H&H Job No. SHR.001
April 3, 2020

#C-1269 Engineering #C-245 Geology
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VIMS Construction Completion – Building 2 Craighead Road (Abernethy Lumber) Brownfields Site NoDa Village Apartments Charlotte, Mecklenburg County, North Carolina Brownfields Project No. 18015-14-060 H&H Project No. SHR-001
Table of Contents

1.0 Introduction ............................................................................................................ 1
2.0 VIMS Inspections, Testing, and Sampling .......................................................... 2
2.1 VIMS Inspections .....................................................................................................3
2.2 Pilot Influence Testing ..............................................................................................5
2.3 Vacuum Monitoring Data .........................................................................................6
3.0 Summary and Recommendations ......................................................................... 6

Tables
Table 1 – Vapor Intrusion Mitigation Plan Master Summary
Table 2 – Quarterly Vacuum Monitoring Data

Figure
Figure 1 – Site Layout Map

Appendices
Appendix A – Building 2 VIMS As-Built Drawings (VMP-1 and VMP-2)
Appendix B – Photographic Log
Appendix C – VIMS Inspection Forms and Field Logs
Appendix D – Monthly O&M Inspection Form

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VIMS Construction Completion – Building 2
Craighead Road (Abernethy Lumber) Brownfields Site NoDa Village Apartments Charlotte, Mecklenburg County, North Carolina Brownfields Project No. 18015-14-060 H&H Project No. SHR-001
1.0 Introduction

On behalf of Philemon NoDa Partners, LLC, Hart & Hickman, PC (H&H) has prepared this report
summarizing vapor intrusion mitigation system (VIMS) inspection and pre-occupancy testing
conducted for Building 2 at the NoDa Village Apartments at the Craighead Road (Abernethy
Lumber) Brownfields property (Brownfields Project No. 18015-14-060) in Charlotte,
Mecklenburg County, North Carolina (Site). The Site is being redeveloped with two four-story
buildings (Building 1 and Building 2) containing multi-family residential units, attached amenity
buildings, an attached leasing office, an outdoor pool/courtyard, urban greenspace, asphalt-paved
parking, and landscaped areas.

Building 1 is an apartment building consisting of four (4) levels with multiple residential tenant
spaces on each level. The ground floor of Building 1 is approximately 47,000 square feet and is
divided into five sections (Building 1A through Building 1E). The ground floor level of Building
1A contains amenity spaces and the apartment community leasing center and the ground floor
levels of the remaining building sections contain residential apartments. A Request for Occupancy
/ VIMS Construction Completion – Revision 2 report for Building 1, dated March 6, 2020 was
approved by the North Carolina Department of Environmental Quality (DEQ) Brownfields
Program on March 11, 2020.

Building 2 is an apartment building consisting of four (4) levels with multiple residential tenant
spaces on each level including the ground floor. The ground floor of Building 2 is approximately
27,000 square feet and is divided into two sections (Building 2A and Building 2B). The two
sections of Building 2 are being constructed in stages. Building 2A is approximately 17,000 square
feet and Building 2B is approximately 10,000 square feet.

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H&H conducted VIMS inspection and pre-occupancy testing activities at Building 2 in accordance
with the Vapor Mitigation Plan (VMP) Revision 1 dated May 23, 2017 and approved by DEQ on
May 24, 2017. In addition, an addendum to the VMP, Request for VMP Modifications dated
February 25, 2019, was approved by DEQ on February 28, 2019. This addendum included
modifications to the type of vapor barrier and to the sub-slab piping to accommodate the staged
construction. The vapor barrier was modified from the proposed Stego Industries, LLC, 15-mil
Stego-Wrap® vapor barrier to the Raven Industries (Raven) VaporBlock® VB15 vapor barrier,
an equivalent 15-mil vapor barrier. In addition, the sub-slab VIMS vent piping was modified to
avoid crossing the thickened footers that separate the building sections of Building 2 and to provide
separate sub-slab depressurization under each of the building sections due to the staged
construction schedule.

Based on the results of the inspection and testing activities, H&H requests that the DEQ
Brownfields Program acknowledge compliance with land use restriction (LUR) 4.b of the Notice
of Brownfields Property. The Site Layout Map is provided as Figure 1 and VIMS As-Built
Drawings for Building 2 are included as VMP-1 and VMP-2 in Appendix A. The Vapor Intrusion
Mitigation Plan (VIMP) Master Summary is included as Table 1. Representative photos of the
VIMS installation are included as Appendix B. A summary of the VIMS installation inspection,
and pre-occupancy testing is provided in the following sections.

2.0 VIMS Inspections, Testing, and Sampling

The VIMS under Building 2 is comprised of five active sub-slab depressurization systems utilizing
a vent pipe system and RadonAway RP-145 electric fans coupled with the Raven VB-15 15-mil
vapor barrier installed below the ground floor concrete slab of the entire building. The ground
floor contains slab-on-grade construction with thickened footers located below load bearing walls
and tenant separation walls.

As described in Section 1.0, during construction planning activities for the Site buildings, the
general contractor indicated Building 2 would be constructed in two sections (Buildings 2A and
2B), with different completion dates for each section. Therefore, to provide for an effective VIMS
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in each building section, H&H and Philemon NoDa Partners, LLC elected to separate the VIMS
sub-slab piping into sections at the thickened slabs that separate each building section.
Additionally, per approval of the design engineer, the sub-slab VIMS slotted vent piping was
increased from 3-inch Schedule 40 PVC to 4-inch Schedule 40 PVC to allow for increased air flow
below the slab of Building 2.

During construction activities, H&H conducted VIMS inspections and pre-occupancy testing
which are summarized in the following sections.

2.1 VIMS Inspections

Between March 29, 2019 and February 27, 2020, H&H conducted VIMS inspections of Building
2 during the following four stages of construction:

1. after completion of the sub-slab piping and gravel layout (Inspection 1);
2. after placement of the Raven VB-15 vapor barrier on top of the piping layout and gravel
layer (Inspection 2);
3. after installation of above-grade riser piping within the building (Inspection 3); and
4. after installation of the fan and vacuum alarms (Inspection 4).

Note that during H&H’s inspections of the VIMS, H&H conducted several follow-up inspections
of Building 2A and Building 2B due to the following:

Building 2A
1) During an inspection (Inspection 1) conducted on April 3, 2019, H&H noted that a section
of solid VIMS piping would likely accumulate water, and recommended that the risers at
the slab step be moved to the higher of the two slabs. H&H conducted a follow up
inspection of Building 2A sub-slab piping on April 24, 2019 and confirmed that the sub-
slab piping had been properly placed.

2) During an inspection (Inspection 2) conducted on April 23, 2019, H&H noted that the
vapor barrier was not properly sealed around the connection to the stairwell and several
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small penetrations to the vapor barrier required patches. H&H conducted follow up
inspections of the vapor barrier on May 16, 2019 and May 31, 2019 and confirmed that the
vapor barrier had been properly sealed to the stairwell and the penetrations had been
properly patched.

3) During an inspection (Inspection 4) conducted on February 27, 2020, H&H noted that
proper identification labels were not present at the fan locations. H&H conducted a follow
up inspection later that day and confirmed that the fans were properly labeled.

Building 2B
1) During an inspection (Inspection 1) conducted on March 29, 2019, H&H noted that two
connections through the thickened slab were not present. H&H conducted a follow up
inspection on April 5, 2019 and confirmed that the thickened slab crossings were properly
installed.

2) During an inspection (Inspection 2) conducted on April 3, 2019, H&H noted that minor
repairs in the vapor barrier were needed around the edges. H&H conducted follow up
inspections of the vapor barrier April 5, 2019 and April 10, 2019 and confirmed that the
vapor barrier had been properly repaired and sealed.

3) During an inspection (Inspection 4) conducted on February 27, 2020, H&H noted that
proper identification labels were not present at the fan locations. H&H conducted a follow
up inspection later that day and confirmed that the fans were properly labeled.

After completion of inspection activities, H&H concluded that the VIMS within Building 2A and
Building 2B were properly installed by the contractor and were equipped with electric (active)
mitigation fans in accordance with the DEQ-approved VIMP. A photographic log with
representative photographs of the VIMS installation are included in Appendix B and VIMS
Inspection Logs are included in Appendix C.

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2.2 Pilot Influence Testing
On April 17, 2019 and July 1, 2019, H&H conducted “pilot” influence testing on the vent network
installed below the concrete slab of Building 2 to verify that adequate communication was present
between the sub-slab annular space and the VIMS. During influence testing, H&H utilized
temporary vapor extraction fans, including RadonAway RP-145 and AMG Legend fans, which
were attached to the vertical riser piping. Prior to turning the fans on, vacuum measurements were
collected at each monitoring point to establish baseline conditions. After baseline conditions were
recorded, the fans were activated. A Dwyer series 475 Mark III Digital manometer (capable of
measuring to 0.001 inches of water column (in-WC) or 0.25 Pascals [Pa]) was then connected to
each pressure measuring port via Teflon tubing to record differential pressures. H&H collected
vacuum measurements at each monitoring point in Building 2 over varied time intervals. The table
below provides a summary of influence testing results for each building section.

Building 2 Section Influence Testing Date Vacuum Range Measured from
Monitoring Points (Pascals)
Building 2A July 1, 2019 8.2-110
Building 2B April 17, 2019 37-154

Results of the influence testing indicate that differential pressures measured at the observation
points during the testing are above the minimum depressurization reading (4 Pa) deemed
acceptable by DEQ Brownfields to demonstrate that the VIMS is sufficiently depressurizing the
sub-slab.

Sub-Slab VIMS Pilot Test field logs summarizing vacuum and flow measurements collected at
each vapor extraction point location and differential pressure measurements collected at each
observation (pressure monitoring) point during the testing are provided in Appendix C. Building
2 As-Built Drawings which identify the vapor extraction and monitoring point locations are
provided in Appendix A.

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2.3 Vacuum Monitoring Data
As requested by DEQ, pre-occupancy vacuum measurements were conducted from each
monitoring point in Building 2 on February 26, 2020. In addition, each vacuum fan in Building 2
was checked by H&H and verified to be properly functioning. The vacuum measurements with
each fan operational ranged from 73.9 to 129.2, which is notably higher than the minimum 4 Pa
required by DEQ to demonstrate sufficient sub-slab depressurization is present below the building.
The vacuum monitoring data is presented on Table 2.

3.0 Summary and Recommendations

Based on the results of our recent VIMS inspections and testing, H&H certifies that the VIMS
associated with Building 2 at the Noda Village Apartments at the Craighead Road (Abernethy
Lumber) Brownfields Site has been properly installed per the approved VIMP and there is
adequate sub-slab depressurization from the VIMS. H&H requests that the DEQ Brownfields
Program acknowledge compliance with land use restriction (LUR) 4.b of the Notice of
Brownfields Property.

In accordance with the approved VIMP, the building maintenance department will perform a
monthly operational and maintenance (O&M) check on the electric fans to ensure proper operation
and function after the building is complete. Inoperable or damaged fans, or other deficiencies
related to the vapor intrusion mitigation system discovered during the O&M visits, shall be
immediately reported to H&H, or the current owner’s environmental consultant. The O&M checks
and any repairs or modifications will be recorded on the Monthly Fan O&M Form provided in
Appendix D. These forms will be submitted to DEQ on an annual basis.

While the monthly O&M checks will ensure proper operation of the electric fans, in addition to
these checks, per DEQ’s request, quarterly vacuum monitoring events will be conducted during
the first year of operation with the pre-occupancy vacuum monitoring event serving as the first
quarterly event. The quarterly vacuum monitoring data will be emailed to DEQ following each
event. In addition, the monthly O&M data will be reported to DEQ during the annual Land Use
Restriction (LURU) update. Following the first year of operation, an evaluation of the system
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operation will be conducted by a North Carolina Professional Engineer to provide
recommendations for a change in frequency of the O&M checks and vacuum monitoring events.
This evaluation will be submitted to DEQ for approval prior to modifications to the system
monitoring. At a minimum, annual vacuum monitoring checks will be required by DEQ after the
first year of operation.
Table 1Vapor Intrusion Mitigation Plan Master SummaryFormer Abernethy LumberBrownfields Project No. 18015-14-060Charlotte, NCH&H Project: SHR-001Date of Most Recent Update - 3/28/20BuildingSection2A 2BVIMS Construction Inspection & Completion*Sub-grade Vapor VentYes Yes*Vapor Barrier - GeosealYes YesAbove-Grade Riser Piping & LabelsYes Yes**Ventilator FansYes YesPilot Test Pilot Test Pass Date 07/01/19 04/17/19Vacuum Range at Monitoring Point (Pascals)42-111 25-154Sub-Slab Sampling Results Sample ID SS-1A MP-3 SS-1B_MP-2 SS-1B_MP-3 SS-1C_MP-1 SS-1C MP-2** SS-1D_MP-2 SS-1D_MP-5 SS-1E_MP-1 SS-1E_MP-3**NC NCSample Date 11/1/2019 10/28/2019 10/28/2019 10/28/2019 11/1/2019 10/28/2019 10/28/2019 10/28/2019 10/28/2019NC NCVOCs by TO-15 (µg/m3)µg/m3Acetone 14 J 12.9 26.0 36.9 20.2 31.62024.6 21.8 18.919.7NC NC220,000Benzene 6.4<0.342.3 0.52 J 0.37 J 0.52 J9.4<0.320.36 J<0.37<0.35NC NC120n-Butylbenzene<0.728.2 8.2 J<2.46.2 J 30.9<0.7266.3<2.3 <2.7<2.6NC NCNSCarbon Disulfide<0.43 <0.4816.3 12.6 5.2 1.3 J<0.43<0.465.0 0.66 J<0.50NC NC4,900Chloroform<0.36 <0.43 <0.72 <0.41 <0.45 <0.43<0.36<0.41 <0.40 <0.47<0.45NC NC41Chloromethane<0.281.0<0.572.2 1.5 2.7<0.281.4 1.8 1.3<0.36NC NC630Ethylbenzene 14<0.67 <1.14.1<0.701.5 J18<0.641.2 J<0.73<0.70NC NC370Isopropylbenzene (Cumene) 0.81 J<0.83 <1.41.0 J<0.87 <0.83<0.790.97 J<0.78 <0.91<0.87NC NC2,800p-Isopropyltoluene (p-Cymene)<0.75 <1.12.3 J 7.2<1.22.5<0.754.4 1.7 J<1.2<1.2NC NCNSNaphthalene 1.3 10.3 10.1 6.0 6.7 4.1 J<0.807.3 3.7 J 3.8 J3.5 JNC NC21n-Propylbenzene 2.9<0.88 <1.54.2 J 1.8 J 1.3 J1.9 J3.1 J 1.3 J<0.96<0.92NC NC7,000Toluene 210 18.0 29.2 3,260 133 5133001,000 478 26.510.7NC NC35,000Trichloroethylene<0.43 <0.55 <0.93 <0.53 <0.58 <0.55<0.43<0.53 <0.52 <0.61<0.58NC NC141,2,3-Trimethylbenzene 13* 15.9 12.8 73.3 3.7 28.112*60.0 9.9<0.97<0.92NC NC4201,2,4-Trimethylbenzene 39 5.4 5.1 64.8 3.9 21.33046.6 8.1<1.1<1.0NC NC420m&p-Xylene 66<1.5 <2.66.0 1.6 J 3.4 J862.5 J 1.8 J<1.7<1.6NC NC700o-Xylene 36 0.77 J<1.32.7 0.85 J 1.3 J441.1 J<0.71 <0.83<0.79NC NC700Risk-Assessment - Soil Gas to Indoor AirCarcinogenic Risk (Resident) 1.40E-06 2.3E-06 2.5E-06 1.6E-067.8E-072.7E-06 1.4E-06 1.4E-061.3E-06NC NCHazard Index (Resident) 7.50E-02 1.5E-01 7.0E-02 6.9E-026.8E-021.3E-01 4.9E-02 3.7E-023.4E-02NC NCOccupancy Granted by DEQNotes:1) North Carolina Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Residential Sub-Slab and Exterior Soil Gas Screening Levels (SGSLs) (February 2018)Bold concentration indicates an exceedance in the applied standard.µg/m3 = micrograms per cubic meter; NS = Not Specified; -- = sample has not been collected; ppbv = parts per billion by volumeJ = detected concentration is above the laboratory method detection limit, but below the laboratory calibrated reporting limit. Therefore, the reported concentration is an estimated value.* Compound detected as a tentatively identified compound (TIC) and reported as ppbv in laboratory analytical report. Concentration converted to ug/m3 using EPA online conversion calculator.** Due to a discrepancy with the helium leak check results recorded during sampling, the data for samples, SS-1C MP-2 and SS-1E MP-3 may be suspect, and are shown for comparative purposes only. Suspect data is identified in italics.NC = Sample not collected nor requiredSS-1A_MP-2/Dup-110/28/20191AYesYesYesYes07/01/19102-13404/17/19YesYesYesYes04/17/19YesYesYesYesBuilding 1Building 21E1B 1C 1DYesYesYesYesYesYesYesYesResidential SGSL04/17/19March 11, 2020Pending3.9E-061.1E-0187-137 123-125 68-113 135-14807/01/19\\hhfs01\MasterFiles\AAA-Master Projects\Stonehenge Real Estate Group - SHR\SHR-001 Former Abernethy Lumber\VIMS Construction\20200128 - Former Abernethy Lumber - VIMP Summary TableTable 1 Hart & Hickman, PC
Table 2
VIMS Vacuum Monitoring
Craighead Road (Abernethy Lumber) Brownfields Site
(Brownfields Project No. 18015-40-060)
H&H Project: SHR.001
Q1 Q2 Q3 Q4
‐‐Date 1/13/2020
MP‐1 51.3------
MP‐2 54.8------
MP‐3 67.3------
MP‐4 64.8------
MP‐1 76.5------
MP‐2 58.8------
MP‐3 64.0------
MP‐4 73.7------
MP‐1 99.1------
MP‐2 100.1 -- -- --
MP‐1 90.7------
MP‐2 96.4------
MP‐3 91.7------
MP‐4 86.9------
MP‐5 89.2------
MP‐1 65.8------
MP‐2 64.5------
MP‐3 67.3------
‐‐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
Vacuum Monitoring Point Measurements (Pa)
Building Number
1C
1D
1E
2A
2B
Building Slab 
Section
1A
1B
Building 2
Building 1
Monitoring Point 
ID
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Table 2
Hart & Hickman, PC
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 LAYOUT 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
Appendix A
Building 2 VIMS As-Built Drawings (VMP-1, VMP-2, and VMP-3)
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
VMS VAPOR LINER AND BASE COURSE (TYP)1VMS SLOTTED COLLECTION PIPE (TYP)2BASE COARSE - CLEAN #57 OR #67 STONE,MIN 6" THICK BENEATH VMS VAPOR LINERVAPOR LINER (SEE SPECIFICATION #1)4" SCH 40 THREADED FLUSH JOINTSLOTTED PVC PIPE (0.020" SLOT WIDTH,1/8" SLOT SPACING) WITH FILTER SOCKSET WITHIN MIN 6" BASE COURSEVAPOR LINER PENETRATION SEALED TOPIPE PER MANUFACTURER INSTRUCTIONSVAPOR LINER (SEE SPECIFICATION #1)TOP OF THICKENEDSLAB TURNDOWNSOLID PIPE CONNECTOR THROUGH THICKENED SLABCONCRETE FLOOR SLABSUBBASESUBBASEVAPOR LINER PENETRATION SEALEDTO PIPE PER MANUFACTURERINSTRUCTIONSSOLID TO SLOTTED 4" SCH 40PVC PIPE TRANSITION (SLIP COUPLINGOR THREADED JOINT)STUD WALL(NOT PRESENT IN ALL LOCATIONS)VAPOR LINERBENEATH THICKENED SLABHORIZONTAL PIPE THROUGH THICKENED SLAB3VMP-2TOP OF THICKENEDSLAB TURNDOWNFIRE WALL (NOT PRESENTIN ALL LOCATIONS)FLOOR CLEANOUT, ADJUSTABLE,2" DIA ZURN INDUSTRIESMODEL #CO2450-PV2(OR EQUIVALENT)VAPOR LINER PENETRATION SEALED TOPIPE PER MANUFACTURER INSTRUCTIONS2" SCH 40 PVC 90 DEGREE ELBOW2" VENT PIPEPROTECTION SCREEN PRESSURE MEASURING POINT VENT PIPEPROTECTION SCREENNTSNTSNTSNTSBASE COARSE(SEE SPECIFICATION #1)BASE COARSE(SEE SPECIFICATION #1)BASE COARSE(SEE SPECIFICATION #1)NTSHORIZONTAL PIPE AT SLAB STEP4NTSVMS VACUUM FAN AND EXHAUST DISCHARGE ON ROOFTOPVARMINT SCREENWEATHER PROOF BOX(HARDWIRE FAN)3" PVC DUCT PIPETHROUGH ROOFROOF TOPFLEXIBLE COUPLINGFLEXIBLE COUPLINGRADONAAWY RP-145 VACUUM FAN(SEE SPECIFICATION #3)3" PVC EXHAUST DUCT PIPE3" PVC 90 DEGREE ELBOWVMP-2VMP-2VMP-2VERTICAL RISER AT SLAB PENETRATION WITH TEE5NTSVAPOR LINER PENETRATION SEALED TOPIPE PER MANUFACTURER INSTRUCTIONS4" SCH 40 PVC 90 DEGREE TEESTUD WALL3" SCH 40 PVC RISER DUCT PIPE(SEE SPECIFICATION #2)BASE COARSE(SEE SPECIFICATION #1)VMP-2NTSVERTICAL RISER AT INTERIOR SLAB STEP DETAILNTSSTUD WALL(NOT PRESENT IN ALL LOCATIONS)11VMP-210VMP-28VMP-26VMP-2BASE COARSE(SEE SPECIFICATION #1)3" SCH 40 PVC RISER DUCT PIPE. POSITIONVERTICAL RISER PIPE ON HIGH SIDE OFSTEP(SEE SPECIFICATION #2)FIRE WALL PRESENT INSOME AREASSOLID TO SLOTTED 4" SCH 40 PVCPIPE TRANSITION (SLIP COUPLINGOR THREADED JOINT)STUD WALLVAPOR LINER PENETRATION SEALED TOPIPE PER MANUFACTURER INSTRUCTIONSSOLID TO SLOTTED 4" SCH 40 PVCPIPE TRANSITION (SLIP COUPLINGOR THREADED JOINT)4" SCH 40 PVC TEESOLID TO SLOTTED 4" SCH 40PVC PIPE TRANSITION (SLIP COUPLINGOR THREADED JOINT)BASE COARSE(SEE SPECIFICATION #1)FIRE WALL PRESENT INSOME AREASSOLID TO SLOTTED 4" SCH 40 PVCPIPE TRANSITION (SLIP COUPLINGOR THREADED JOINT)STUD WALLVAPOR LINER PENETRATION SEALED TOPIPE PER MANUFACTURER INSTRUCTIONSSOLID TO SLOTTED 4" SCH 40 PVCPIPE TRANSITION (SLIP COUPLINGOR THREADED JOINT)4" SCH 40 PVC 45 DEGREE ELBOWSLAB STEP HEIGHT VARIESTHICKENED SLAB MAY NOT BE PRESENT IN ALL LOCATIONSELEVATOR SUMP DETAILNTS12VMP-2SUBBASEVAPOR LINER PENETRATIONBASE COARSE(SEE SPECIFICATION #1)SLAB STEP HEIGHTVARIESVERTICAL RISER AT SLAB PENETRATION WITH 90 DEGREE ELBOW7NTSVAPOR LINER PENETRATION SEALED TOPIPE PER MANUFACTURER INSTRUCTIONS4" SCH 40 PVC 90 DEGREE ELBOWSTUD WALL3" SCH 40 PVC RISER DUCT PIPE(SEE SPECIFICATION #2)BASE COARSE(SEE SPECIFICATION #1)VMP-2SOLID TO SLOTTED 4" SCH 40PVC PIPE TRANSITION (SLIP COUPLINGOR THREADED JOINT)4" TO 3" SCH 40PVC REDUCERTHICKENED SLAB MAY NOT BE PRESENT IN ALL LOCATIONSPRESSURE MEASURING POINT WITH EXTENDED INTAKE PIPENTS9VMP-2TOP OF THICKENEDSLAB TURNDOWN VENT PIPEPROTECTION SCREENBASE COARSE(SEE SPECIFICATION #1)STUD WALL(NOT PRESENT IN ALL LOCATIONS)FLOOR CLEANOUT, ADJUSTABLE,2" DIA ZURN INDUSTRIESMODEL #CO2450-PV2 (OR EQUIVALENT)VAPOR LINER PENETRATION SEALED TOPIPE PER MANUFACTURER INSTRUCTIONSSTUD WALL(NOT PRESENT IN ALL LOCATIONS)2" SOLID SCH 40PVC2" SOLID SCH 40PVC2" SCH 40PVC 90 DEGREE ELBOW2" SOLID SCH 40 PVC4" SCH 40 PVC 90DEGREE ELBOW4" SOLID SCH 40 PVC4" SOLID SCH 40 PVC(SEE SPECIFICATION #5)4" SOLID SCH 40 PVC(SEE SPECIFICATION #5)4" SOLID SCH 40 PVC(SEE SPECIFICATION #5)4" SOLID SCH 40 PVC(SEE SPECIFICATION #5)POSITION PIPE MINIMUM 34"FROM CORNER OF CONCRETEPOSITION PIPE MINIMUM 34"FROM CORNER OF CONCRETE4" TO 3" SCH 40PVC REDUCER4" TO 3" SCH 40PVC REDUCERSTUD WALL SEPARATIONBETWEEN BUILDING SECTIONSCONTINUOUS VAPOR LINERBENEATH THICKENED SLABVAPOR BARRIER AT SEPARATION BETWEEN BUILDING SECTIONS13VMP-2TOP OF THICKENEDSLAB TURNDOWNFIRE WALL (NOT PRESENTIN ALL LOCATIONS)BASE COARSE(SEE SPECIFICATION #1)NTSCOMPACTED BASE SOILVAPOR MITIGATION SYSTEMDETAILS & SPECIFICATIONSAS-BUILT DRAWINGAPRIL 2, 2020VAPOR MITIGATION SYSTEM (VMS) SPECIFICATIONS1. VMS VAPOR LINER IS VAPORBLOCK 15-MIL VAPOR BARRIER MANUFACTURED BY RAVEN INDUSTRIES.VAPOR LINER IS INSTALLED AS SPECIFIED HEREIN AND PER MANUFACTURER INSTALLATION INSTRUCTIONSTO CREATE A CONTINUOUS LINER BELOW FLOOR SLABS LOCATED IN LOWER LEVEL RESIDENTIAL LIVING ANDRESIDENTIAL AMENITY BUILDING SPACES. A MINIMUM 4-INCH THICK BASE COURSE CONSISTING OF CLEAN#57 OR #67 STONE IS INSTALLED BENEATH THE VAPOR MITIGATION SYSTEM (VMS) VAPOR LINER.2. VMS PIPING IS NOT BE TRAPPED AND IS SLOPED A MINIMUM OF 18 UNIT VERTICAL IN 12 UNITS HORIZONTAL(1% SLOPE) TO GRAVITY DRAIN. PVC PIPE JOINTS IS CONNECTED USING PVC SOCKET COUPLINGS AND PVCGLUE. SUB-SLAB SLOTTED VAPOR COLLECTION PIPE IS THREADED FLUSH JOINT 4" SCH 40 PVC PIPE WITH0.020" SLOT WIDTH AND 18" SLOT SPACING. FABRIC FILTER SOCK IS INSTALLED OVER SLOTTED PIPESECTIONS. ABOVE-SLAB VERTICAL RISER PIPING IS PERMANENTLY IDENTIFIED BY MEANS OF A TAG ORSTENCIL WITH "VAPOR MITIGATION SYSTEM" OR "RADON MITIGATION SYSTEM" WITHIN EACH FLOOR LEVELAND ABOVE THE ROOF LINE. LABELS ON FAN IDENTIFY FAN IDENTIFICATION NUMBER.3" PVC VERTICALRISER PIPING IS INSTALLED TO CONNECT EACH SLAB PENETRATION LOCATION TO A ROOFTOP EXHAUSTDISCHARGE POINT WITH VACUUM FAN (SEE SPECIFICATION #3). ABOVE-SLAB VERTICAL RISER PIPE RUNSBETWEEN THE SLAB PENETRATION AND THE ROOFTOP EXHAUST DISCHARGE IS INSTALLED PER APPLICABLEBUILDING CODE AND AS SPECIFIED IN THE CONSTRUCTION DOCUMENTS AND DRAWINGS. VERTICAL RISERPIPES ABOVE SLAB STEPS IS PLACED ON THE HIGH SIDE OF THE SLAB STEP.3. VERTICAL RISER PIPING EXTENDS IN A VERTICAL ORIENTATION THROUGH THE BUILDING ROOF. ANIN-LINE RADONAWAY MODEL RP145 VACUUM FAN IS INSTALLED ON EACH RISER PIPE ABOVE THE BUILDINGROOF LINE AS DEPICTED IN DETAIL #11, AND IN ACCORDANCE WITH MANUFACTURER INSTALLATIONINSTRUCTIONS AND APPLICABLE BUILDING CODE. EXHAUST DUCT PIPE IS CONNECTED TO THE OUTLET OFTHE FAN USING A FLEXIBLE COUPLING AND EXTEND TO A MINIMUM OF 4 FT ABOVE THE BUILDING ROOF LINE.A 90 DEGREE PVC ELBOW WITH VARMINT SCREEN IS INSTALLED ON THE END OF EACH EXHAUST DUCT PIPE.THE EXHAUST OUTLET OF EACH DUCT PIPE IS A MINIMUM OF 10 FT FROM ANY OPERABLE OPENING OR AIRINTAKE INTO THE BUILDING.4.THIS VAPOR MITIGATION PLAN IS INTENDED TO BE USED FOR DIRECTION OF VMS COMPONENTINSTALLATION ONLY AND IS NOT INTENDED TO GUIDE CONSTRUCTION OF STRUCTURAL COMPONENTS NOTRELATED TO THE VMS. CONSTRUCTION CONTRACTOR SHALL VERIFY CONSISTENCY OF VMS DETAILS WITHAPPLICABLE STRUCTURAL PLANS AND RESOLVE ANY INCONSISTENCIES PRIOR TO VMS INSTALLATION.5. HORIZONTAL PIPING LOCATED WITHIN SLAB STEPS AND DEPRESSED FOOTINGS HAVE A MINIMUM OF2-INCHES OF CONCRETE ABOVE THE PIPING AND 3-INCHES OF CONCRETE BELOW THE PIPING, OROTHERWISE APPROVED BY DAVIS & CHURCH STRUCTURAL ENGINEERS DURING INSTALLATION.NOTE: FOUNDATION PLAN AND DETAILS PROVIDED BY POOLE & POOLE ARCHITECTURE OFMIDLOTHIAN, VA AND DAVIS & CHURCH STRUCTURAL ENGINEERS OF ALPHARETTA, GA FORREFERENCE AND ARE SUBJECT TO COPYRIGHT PROTECTION.3736 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-22923 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 VILLAGEan Apartment Community byPHILEMON NODA PARTMERS, LLCat 327 EAST CRAIGHEAD, Charlotte, North Carolina 2820604/02/20\\hhfs01\MasterFiles\AAA-Master Projects\Stonehenge Real Estate Group - SHR\SHR-001 Former Abernethy Lumber\VIMS Construction\Occupancy Requests\Building 2\Building 2 - As-Built_VMP-2.dwg, 4/5/2020 5:40:46 PM, DWG To PDF.pc3
TERMINATION OF VAPORLINER AT TURNED DOWN SLABVAPOR LINER TERMINATION AT EXTERIOR LOCATION WITH TURNED DOWN SLAB14VMP-3EXTERIOR BUILDING WALLNTSCOMPACTED BASE SOILINTERIOR SPACEEXTERIOR SPACEGROUND SURFACETERMINATION OF VAPORLINER AT TURNED DOWN SLABVAPOR LINER TERMINATION AT EXTERIOR LOCATION WITH OPEN AIR PATIO15VMP-3PATIO RAILINGISOLATED BASE COARSE(SEE SPECIFICATION #1)NTSCOMPACTED BASE SOILINTERIOR SPACEOPEN AIR PATIO SPACEGROUND SURFACEBASE COARSE CONNECTED WITHVENT PIPING TO RISERSCONTINUOUS VAPOR LINEREXTERIOR BUILDING WALLTOP OF CONCRETE FORPATIO (SOME PATIOS HAVESLAB STEP DOWN)(SIZE VARIES - REFER TO SHEETS VMP-1 & VMP-2)BASE COARSE CONNECTED WITHVENT PIPING TO RISERSCONTINUOUS VAPOR LINERVAPOR MITIGATION SYSTEMDETAILS & SPECIFICATIONSAS-BUILT DRAWINGAPRIL 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-32923 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 VILLAGEan Apartment Community byPHILEMON NODA PARTMERS, LLCat 327 EAST CRAIGHEAD, Charlotte, North Carolina 2820604/02/20\\hhfs01\MasterFiles\AAA-Master Projects\Stonehenge Real Estate Group - SHR\SHR-001 Former Abernethy Lumber\VIMS Construction\Occupancy Requests\Building 2\Building 2 - As-Built_VMP-2.dwg, 4/5/2020 5:41:22 PM, DWG To PDF.pc3

Appendix B Photographic Log
Photograph 2: General view of sub-slab piping in slab step of Building 2B.SHR-0012923 S. Tryon Street, Suite 100
Charlotte, NC 28203704.586.0007(p) 704.586.0373(f)
Photograph 1: General view of sub-slab piping during installation at Building 2A.
CRAIGHEAD ROAD (ABERNETHY LUMBER)NODA VILLAGECHARLOTTE, NORTH CAROLINA
Photograph 4: General view of vapor barrier installation at Building 2B. SHR-0012923 S. Tryon Street, Suite 100
Charlotte, NC 28203704.586.0007(p) 704.586.0373(f)
Photograph 3: General view of vapor barrier installation at Building 2A.
CRAIGHEAD ROAD (ABERNETHY LUMBER)NODA VILLAGECHARLOTTE, NORTH CAROLINA
Photograph 6: General view of the vapor barrier connection from Building 2A and 2B.SHR-0012923 S. Tryon Street, Suite 100
Charlotte, NC 28203704.586.0007(p) 704.586.0373(f)
Photograph 5: General view of vapor barrier penetration at Building 2A.
CRAIGHEAD ROAD (ABERNETHY LUMBER)NODA VILLAGECHARLOTTE, NORTH CAROLINA
Photograph 8: Representative view of RadonAway RP-145 active fans on Building 2. Discharge
pipes positioned at least l0 feet from building air intakes.
2923 S. Tryon Street, Suite 100
Charlotte, NC 28203704.586.0007(p) 704.586.0373(f)
Photograph 7: Representative view of riser piping with label “Radon Mitigation Piping Soil Vent”.SHR-001CRAIGHEAD ROAD (ABERNETHY LUMBER)NODA VILLAGECHARLOTTE, NORTH CAROLINA
Riser Piping Label
Drain, waste, vent pipes
Photograph 10: Representative view of monitoring events in Building 2.
2923 S. Tryon Street, Suite 100
Charlotte, NC 28203704.586.0007(p) 704.586.0373(f)
Photograph 9: Representative view of pilot testing in Building 2.SHR-001CRAIGHEAD ROAD (ABERNETHY LUMBER)NODA VILLAGECHARLOTTE, NORTH CAROLINA

Appendix C VIMS Inspection Forms and Field Logs

Initials________________________
Sub-Slab VIMS Pilot Test
Site Address:__________________________________________________________________________
Date: ___________ Test Start Time:___________ Weather:_______________________________
Sub-Slab Test # _______ Location:_______________________________________________________
Time

FanϮͲϰSuction Point Vacuum (“WC)
FanϮͲϭ Suction Point Vacuum (“WC)
FanϮͲϳ Suction Point Vacuum (“WC)
DŽŝŶƚŽƌŝŶŐ
Point
Baseline
Pressure
Pressure
“WC
Pressure
“WC
Pressure
“WC
Pressure
“WC
Pressure
“WC
DW #ϭ
DW #Ϯ
DW #ϯ
DW #ϰ
DW #ϱ
Comments____________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
DW #ϲ Ϭ͘ϬϬϬ ͲϬ͘ϭϬϵ ͲϬ͘ϭϬϵ ͲϬ͘ϭϭϳ ͲϬ͘ϰϬϰ ͲϬ͘ϯϵϮ
ACB/JML
Craighead Rd. (Former Abernethy Lumber)
7/1/2019 15:35 Clear/Sunny, 80s
1 Building 2A
0.000 -0.033 -0.053 -0.052 -0.378 -0.375
0.000 -0.097 -0.121 -0.124 -0.403 -0.399
0.000 -0.146 -0.165 -0.176 -0.440 -0.436
0.000 -0.144 -0.165 -0.172 -0.444 -0.439
0.000 -0.089 -0.122 -0.130 -0.444 -0.431
Started Test # 2 (3 fans) @16:35
Fans 2-1 and 2-7 were AMG Legend; Fan 2-4 was RP-145
16:05 16:15 16:25 16:45 17:05
----------
-1.260 -1.269
----
-- --
-1.382 -1.582
---1.808
---1.788
-1.534
-1.637
-1.803
Initials________________________
Sub-Slab VIMS Pilot Test
Site Address:__________________________________________________________________________
Date: ___________ Test Start Time:___________ Weather:_______________________________
Sub-Slab Test # _______ Location:_______________________________________________________
Time
FanϮͲϵ Suction Point Vacuum;“WC)
FanϮͲϭϬSuction Point Vacuum (“WC)
FanϮͲϭϭ Suction Point Vacuum (“WC)
FanϮͲϭϮ Suction Point Vacuum (“WC)
DŽŝŶƚŽƌŝŶŐ
Point
Baseline
Pressure
Pressure
“WC
Pressure
“WC
Pressure
“WC
Pressure
“WC
Pressure
“WC
DW #ϭ
DW #Ϯ
DW #ϯ
Comments____________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
_____________________________________________________________________________________
ACB/JML
Craighead Rd. (Former Abernethy Lumber)
4/17/2019 17:40 Cloudy, 70s
1 Building 2B
0.000 -0.150 -0.150 -0.152
0.000 -0.618 -0.610 --
0.000 -- -- -0.594
Fan 2-9 and 2-12 had RP-145 fans
Fan 2-11 and 2-12 had AMG Legend fans
17:55 18:10 18:25
-1.336 -1.277 -1.237
-1.686 -1.691
-2.275 -2.232
-1.503 -1.512
-1.690
-2.212
-1.513

Appendix D Monthly O&M Inspection Form

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 Section A
Building 2 Section A
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
Building 2 Section B
Building 1 Section B
Building 1 Section D
Building 1 Section C
Building 1 Section E