HomeMy WebLinkAbout19008 Residence Gateway VIM Installation Letter 20161024 - GatewayVapor Mitigation Construction
Certification Letter
Residences at Gateway
Charlotte, NC
NCDEQ Brownfields Project: 19008-15-060
S&ME Project No. 4335-14-267
Prepared for:
NCDEQ, Brownfields
1646 Mail Service Center
217 West Jones Street
Raleigh, NC 27699-1646
Prepared by:
S&ME, Inc.
9751 Southern Pines Boulevard
Charlotte, NC 28273
October 24, 2016
S&ME, Inc. | 9751 Southern Pines Boulevard | Charlotte, NC 28273 | p 704.523.4726 | f 704-525-3953 | www.smeinc.com
October 24, 2016
North Carolina Department of Environmental Quality
Division of Waste Management, Brownfields
1646 Mail Service Center
217 West Jones Street
Raleigh, North Carolina 27699-1646
Attention: Ms. Carolyn Minnich
Brownfields Project Manager
Reference: Vapor Mitigation Construction Certification Letter
Residences at Gateway - Brownfields Project 19008-15-060
Charlotte, North Carolina
S&ME Project No. 4335-14-267
Dear Ms. Minnich:
S&ME, Inc. (S&ME), on behalf of Gateway Apartments Charlotte, LLC, is providing this document as
certification of Vapor Mitigation System installation at the Residences at Gateway site located in Charlotte,
Mecklenburg County, North Carolina. This report was prepared to comply with the requirements stated in
the Land Use Restriction 4(b) of the Notice of Brownfields Property, executed on October 21, 2015. This
report was also conducted in general accordance with S&ME Proposal No. 43-1500426 dated April 27,
2015 and S&ME Proposal 43-1500971A dated January 29, 2916, which were authorized by Dominion
Realty Partners, LLC on April 28, 2015 and February 22, 2016, respectively.
Results of our observation and monitoring activities indicate the vapor mitigation system was installed in
general accordance with the approved Amended – Vapor Intrusion Barrier Design and Specifications dated
April 29, 2016 (amended from the previously approved Vapor Intrusion Barrier Design and Specifications
dated July 18, 2015).
We appreciate the opportunity to be of service on this project. If you have any questions concerning this
letter, please do not hesitate to contact us.
Sincerely,
S&ME, Inc.
Roger A. Smith, P.G. Thomas P. Raymond, PE
Senior Geologist/Project Manager Senior Environmental Engineer
NC PE Registration No. 18760
Copies to: Mr. Michael Campbell – Dominion Realty Partners, LLC
Mr. Joe Murray, Dominion Realty Partners, LLC
Vapor Mitigation Construction Certification Letter
Residences at Gateway - Brownfields # 19008-15-060
Charlotte, North Carolina
S&ME Project No. 4335-14-267
October 24, 2016 ii
Table of Contents
1.0 Project Information............................................................................................ 1
1.1 Site/Project Description .................................................................................................... 1
2.0 Vapor Mitigation System.................................................................................. 1
2.1 Deviations from Original Design and Amended Design ............................................ 2
3.0 Special Observation Activities......................................................................... 3
3.1 Installation Dates .............................................................................................................. 3
3.2 Observations & Quality Control (QC) Testing ............................................................. 3
3.3 Vent Riser Completion ..................................................................................................... 4
4.0 Certification of Completion ............................................................................. 4
5.0 User Reliance ...................................................................................................... 4
Appendices
Appendix I – Figures
Appendix II – EAI LIQUID BOOT® Certification
Appendix III – Amended Design and NCDEQ, Brownfields Approval Letter Dated April 29, 2016
Appendix IV - Vapor Mitigation Inspection Logs, Sample Grid Locations on Horizontal Surfaces
Map, and Barrier Thickness on Vertical Surfaces Map
Appendix V – Photographs
Vapor Mitigation Construction Certification Letter
Residences at Gateway - Brownfields # 19008-15-060
Charlotte, North Carolina
S&ME Project No. 4335-14-267
October 24, 2016 1
1.0 Project Information
1.1 Site/Project Description
Prior to the development of the site for the Residences at Gateway, the site generally consisted of a gravel
covered parking lot bounded by West Trade Street, North Sycamore Street, West 5th Street, and North
Irwin Avenue in Charlotte, Mecklenburg County. Figure 1 in Appendix I indicates the site’s location on
the USGS Topographic Map and Figure 2 in Appendix I depicts the site and surrounding area as viewed
on the 2015 Aerial Photograph taken from the Charlotte Mecklenburg Property Ownership and Land
Records Information System (POLARIS) website, and is generally representative of conditions prior to
development of the Residences at Gateway.
As required in the land use restrictions in the Brownfields Agreement (BFA) dated October 21, 2015, “a
plan for a vapor intrusion mitigation system, approved in writing by DENR (now DEQ) in advance and
including a proposed assessment for demonstration of the system’s protection of the building’s users, public
health and the environment from risk from vapor intrusion, is implemented to the satisfaction of a North
Carolina-licensed professional engineer as reflected by an implementation report, bearing the seal of said
engineer, that includes photographs and a description of the installation and performance assessment of the
mitigation system”.
In order to comply with the BFA, S&ME provided a Vapor Intrusion Barrier Design and Specifications dated
July 8, 2015, that was signed and sealed by a North Carolina-licensed professional engineer and approved
by DEQ on August 18, 2015. Additionally, due to deviations to the design during construction activities,
S&ME provided an Amended – Vapor Intrusion Barrier Design and Specifications dated April 29, 2016, that
was signed and sealed by a North Carolina-licensed professional engineer, and approved by DEQ on April
29, 2016. S&ME also was contracted to observe, test, and document the installation of the vapor
mitigation system during installation and to provide this certification report following completion. This
letter is to serve as a certification of installation for the vapor mitigation system below the occupied (non-
parking deck) building located at the above site.
Gateway Apartments, LLC, is the project owner, and subcontracted S&ME to design the vapor mitigation
system and provide observations during its installation. The general contractor for the construction of the
site is VCC, LLC (VCC) of Atlanta, Georgia. Gateway Apartments, LLC and VCC also elected to use the
LIQUID BOOT® Vapor Intrusion Barrier System manufactured by CETCO® as the mitigation system product
and subcontracted the installation to EAI, Inc. EAI is certified by CETCO® as an installer of the LIQUID
BOOT® system. A copy of a letter from CETCO® certifying EAI as a certified installer of the LIQUID BOOT®
system is included in Appendix II.
2.0 Vapor Mitigation System
In accordance with the approved Vapor Intrusion Barrier Design and Specifications dated July 8, 2015
(Design) and the Amended – Vapor Intrusion Barrier Design and Specifications dated April 29, 2016
Vapor Mitigation Construction Certification Letter
Residences at Gateway - Brownfields # 19008-15-060
Charlotte, North Carolina
S&ME Project No. 4335-14-267
October 24, 2016 2
(Amended Design), the vapor mitigation system for the occupied (non-parking deck) building consisted of
the following:
A passive vent piping system (GEOVENT™) incorporated within the gravel subgrade;
A geotextile base layer (BASEFABRIC™ or VI-20™ GEOMEMBRANE);
A spray-applied (LIQUID BOOT®) seamless membrane; and
A geotextile protective layer (ULTRA SHIELDTM).
Depending upon the type of base layer installed, the required thickness of the spray-applied membrane
could vary. If BASEFABRIC™ was used, the membrane thickness was required to be 60-mils (0.060 inches)
thick; however, if VI-20™ was used, then the membrane thickness could be reduced to a minimal thickness
of 40-mils (0.040 inches) thick. EAI elected to install VI-20™ as the base fabric; therefore, the spray-
applied membrane was installed to a minimum thickness of 40-mils.
2.1 Deviations from Original Design and Amended Design
Prior to the start of construction but after approval of the initial Design, a request was made to change the
vapor mitigation system design to allow the vapor barrier to be constructed above perimeter foundations
but below walls. S&ME approved the change to allow the barrier to be constructed either above the
foundation, or below the foundation, as long as the barrier extended from outside edge, continuously
below the slab, to the outside edge of the opposite perimeter foundation. During the course of
construction activities, it was noted that the additional deviations from the design were conducted,
generally consisting of:
No vapor barrier was installed below the various elevator pits, located throughout the structure,
prior to the construction of the concrete elevator pit walls and floor slab;
No vapor barrier was constructed below the concrete footing or behind “step up” walls located
within the interior of the apartment structure; and
Perimeter foundations, particularly the common foundation of the precast concrete walls
separating the parking deck from the apartment structure, did not have the vapor barrier either
below the foundation, or above the foundation/below the precast concrete walls, prior to
installation of the precast walls.
In order to mitigate the potential for vapors to enter the apartment building structure and not require
demolition or disassembly of the recently constructed foundations and elevator pits, S&ME amended the
design for the vapor mitigation system to address these areas of deviations. Prior to amending the
design, S&ME conferred with CETCO®, and with Ms. Carolyn Minnich of the NCDEQ, Brownfields
concerning the applicability and to seek approval of the proposed amended designs. Below is a summary
of the design changes that were approved and incorporated into the Amended Design:
Elevator Pits: Install LIQUID BOOT® membrane inside of the elevator pit walls and above
the concrete slab flooring, connect into the membrane beneath the surrounding concrete
floor slab.
Internal Step up Walls: Install LIQUID BOOT® membrane to the front surface of the
concrete step up wall and connect into the membrane beneath the concrete floor slab
below and above.
Vapor Mitigation Construction Certification Letter
Residences at Gateway - Brownfields # 19008-15-060
Charlotte, North Carolina
S&ME Project No. 4335-14-267
October 24, 2016 3
Perimeter Foundations: Install LIQUID BOOT® membrane to the surface of the precast
concrete walls, facing the apartments, connect into the membrane beneath the concrete
floor slab of the ground floor and extend over the top of the wall to “wrap” the apartment
side of the wall.
A copy of the Amended Design, including detailed design drawings, and NCDEQ’s approval letter dated
April 29, 2016, is included in Appendix III.
3.0 Observation Activities
3.1 Installation Dates
The installation of the vapor mitigation system was completed in multiple stages due to construction
scheduling, weather delays, and logistical issues, but generally began on March 23, 3016 and was
completed on October 3, 2016.
3.2 Observations & Quality Control (QC) Testing
In general and as specified in the Design and Amended Design, S&ME observed and/or documented QC
testing procedures while onsite during installation activities between March 23, 2016 and October 3, 2016,
2016. It should be noted that S&ME was not onsite full time during the entire construction process, but
only those times when notified by VCC. The inspection logs included in Appendix IV include dates of
S&ME observations and QC testing. Below is summary of the observations and testing activities
conducted by S&ME:
the layout of the 500 square foot (SF) or 1,000 SF vapor mitigation grid (Nos. G-1 through G-64);
the ground surface for sharp objects prior to installing the vapor mitigation system;
the installation of the GEOVENT™ per the Design and Amended Design;
the installation of the VI-20™ per the Design and Amended Design;
the application of the spray-applied Liquid Boot® membrane layer per the Design and Amended
Design;
the sealing of penetrations (i.e., piping, wiring conduits, etc.,) and terminations (i.e., vertical walls,
interior columns, etc.,);
the collection of coupon samples per the Design and Amended Design from each vapor mitigation
grid;
the smoke testing of each vapor mitigation grid per the Design and Amended Design following
application of the Liquid Boot® membrane layer but before the installation of the UltraShield G-
1000 protective layer;
the repair/reapplication of Liquid Boot ® membrane layer as necessary based on the results of
the QC testing, visual inspections, or other damaged areas by contractors; and
the installation of the UltraShield G-1000 per the Design and Amended Design.
As areas of the vapor mitigation system installation were completed, the concrete was placed by VCC.
VCC was reminded (onsite crews were also) that the vapor mitigation system could not be damaged
during the concrete placement and every effort should be made to minimize the amount of traffic on the
Appendices
Appendix I – Figures
LIMAAVMILL RD
FLINT STPOST ST
COXE AV
W 5TH ST
W 4TH STFLINTSTW 5TH ST
E 3RD ST
W6THST
W
5
T
HST
W 1ST ST
W HILL ST
W 1ST ST
S CEDAR STW
T
R
A
D
E
ST
W TRAD
E ST FRE
NCHST
SI-77HYS I-77 HYN I-77 HYSI-77HYS CEDAR STE 4TH ST
E TRADE ST
S TAT E S T
W TRADE ST
P
O
LKSTHAMILTONSTWHISNANTST
COXE AV
WALNUT AVNI-77EXIT10CRANI-77HYSI-77EXIT10BRANI-77HYS I-77E X IT10CRACALVERT STBEATTIESFORDRDSM IN T STSI-77EXIT10BRASGRAHAMSTSI-77EXIT10
BRAWBROOKSHIREFR
W 4TH ST NI-77HYSI-77HYSI-77HYSPRIN G S T
NI-77EXIT9-1CRAN I -7 7 EXIT 11RA
N S UMMITAV
S SUMMIT AVW JOHN BELKFR NI-77EXI
T
1
1
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A
W
BROOKSHIREFR
GRANDIN RDNI-77HYS I-77 HYS I-77 RAW JOHN BE LK FR
SITE LOCATION
Residences at GatewayWest Trade Street and North Sycamore StreetCharlotte, Mecklenburg County, North Carolina 14335-14-267
DDH WWW.SMEINC.COM
SCALE:
PROJECT NO:
DATE:
DRAWN BY:
FIGURE NO.
09-27-16
1 " = 1,000 'Q:\4335\14\267-West Trade Street Apartments\rev\1_location.mxdENGINEERING LICENSE NO: F-0176
±
REFERENCE: 1988 CHARLOTTE EAST [NC] 1:24,000 USGS TOPOGRAPHIC QUADRANGLEGIS DATA LAYERS WERE OBTAINED FROM THE MECKLENBURG COUNTY GIS WEBSITE. PLEASE NOTE THISMAP IS FOR INFORMATIONAL PURPOSES ONLY. IT IS NOT MEANT FOR DESIGN, LEGAL, OR ANY OTHERUSES. THERE ARE NO GUARANTEES ABOUT ITS ACCURACY. S&ME, INC. ASSUMES NO RESPONSIBILITYFOR ANY DECISION MADE OR ANY ACTIONS TAKEN BY THE USER BASED UPON THIS INFORMATION.
Project Area
Streams
0 1,000 2,000
Feet
Scale: As Listed
Checked by: WAQ
Drawn by: RAS
Date: 8/17/15
Vicinity Map
Proposed West Trade Street Apartments
West Trade Street and North Sycamore Street
Charlotte, North Carolina
Figure
2
Job No.: 4335-14-267
REFERENCE:
BASE MAP (2015 AERIAL) WAS OBTAINED FROM THE MECKLENBURG COUNTY GIS WEBSITE. PLEASE NOTE THIS MAP IS FOR INFORMATIONAL PURPOSES ONLY. IT IS
NOT MEANT FOR DESIGN, LEGAL, OR ANY OTHER USES. THERE ARE NO GUARANTEES ABOUT ITS ACCURACY. S&ME, INC. ASSUMES NO RESPONSIBILITY FOR ANY
DECISION MADE OR ANY ACTIONS TAKEN BY THE USER BASED UPON THIS INFORMATION.
Project Area and
Mecklenburg County Parcel IDs
Scale:
0 200 ft
07815301
07815303
07815304
07815315
07815314
07815312
07815308
Appendix II - EAI LIQUID BOOT® Certification
Remediation Technologies 806 Darby Rd., Havertown, PA 19083
267-885-5653 www.cetco.com
February 22, 2015
Zarah Thanasides
EAI, Inc.
50 Prescott Street
Jersey City, NJ 07304
RE: EAI - Liquid Boot Certification
Dear Zarah:
I am writing this letter to confirm that EAI Corp. is a certified installer of the Liquid Boot system. EAI
has over 10 years of Liquid Boot installation experience and has achieved preferred applicator status
with Liquid Boot.
Sincerely,
Matt Geary
CETCO Remediation Technologies
Appendix III – Amended Design and NCDEQ, Brownfields
Approval Letter Dated April 29, 2016
PAT MCCRORY Governor
DONALD R. VAN DER VAART
Secretary
MICHAEL SCOTT
Acting Director
State of North Carolina | Environmental Quality | Waste Management
1646 Mail Service Center | 217 West Jones Street | Raleigh, NC 27699-1646
919 707 8200 T
April 29, 2016 Roger Smith
S&ME, Inc.
9751 Southern Pine Boulevard Charlotte, NC 28273
RSmith@smeinc.com
Subject: Amended Vapor Intrusion Barrier Design & Specifications- Approval
Residence at Gateway Charlotte, Mecklenburg County
Brownfields Project No. 19008-15-060
Dear Mr. Smith;
On April 29, 2015, the North Carolina Department of Environmental Quality (DEQ)
Brownfields Program received the Amended Vapor Instruction Barrier Design and Specifications
prepared on behalf of Dominion Realty Partners for the above referenced brownfields property.
On August 18, 2015, DEQ approved the original design and specifications dated July 8, 2015
prepared by S&ME. Based upon our conversation and the cover letter, DEQ understand the design needs to change due to construction activities. Upon review of the material submitted,
DEQ approves the amended vapor mitigation plan.
Be advised that this approval from the DEQ Brownfields Program does not waive any
applicable requirement to obtain any necessary permits, licenses or certifications for the above listed activities nor does it waive any requirement to comply with applicable law for such
activities. If you have questions about this correspondence or require additional information,
please feel free to contact me by phone at 704/661-0330, or by e-mail at
carolyn.minnich@ncmail.net.
Sincerely,
Carolyn Minnich
Carolyn Minnich Brownfields Project Manager
Division of Waste Management
cc: BF Central File
David Peacock, DEQ Joe Murrary, jmurray@DRP-LLC.com
S&ME, Inc. / 9751 Southern Pine Blvd. / Charlotte, NC 28273 / p 704.523.4726 / f 704.525.3953 / www.smeinc.com
April 29, 2016
Dominion Realty Partners
101 N. 5th Street, Suite B-1
Richmond, Virginia 23219
Attention: Mr. Joe Murray via email: jmurray@DRP-LLC.com
Construction Manager
Reference: Amended - Vapor Intrusion Barrier Design and Specifications
Proposed Residences at Gateway Village
West Trade Street & North Sycamore Street
Charlotte, Mecklenburg County, North Carolina
S&ME Project No. 4335-14-267, Phase 05
NCDENR Brownfields Project Number: 19008-15-060
Dear Mr. Murray:
As requested by Dominion Realty Partners, S&ME, Inc. (S&ME) has completed the attached
amendments to the Vapor Intrusion Barrier Design that was previously prepared by S&ME for
the above referenced site, and dated July 8, 2015. The attached document and drawings were
conducted in accordance with an email request from Mr. Joe Murray of Dominion Realty Partners
dated April 11, 2015 and S&ME proposal number 43-1500971A, dated January 29, 2016 and
approved on February 22, 2016, and proposal number 43-1500426 dated, April 27, 2015 and
authorized on April 28, 2015.
As stated above, S&ME previously provided a design and specifications for the installation of a
vapor mitigation system for the proposed residences at Gateway Village apartment complex being
constructed for Dominion Realty Partners. Basically, the design for the mitigation system
consisted of the installation of a flexible (Liquid Boot®) vapor barrier constructed below the
apartment portion of the structure. The vapor barrier was to be constructed extending from below
the exterior edge of the perimeter footings, below the ground floor slab, continuously to the
exterior edge of the opposite perimeter footing in order to prohibit vapors from entering the
structure. Additionally, below the vapor barrier of the concrete floor slab, a passive vapor
collection system (GeoVent™) was to be installed and connected to vertical riser pipes extending
above the roof, in order to capture vapors and allow to vent to the atmosphere.
Prior to the start of construction, a request was made to change the vapor mitigation system
design to allow the vapor barrier to be constructed above perimeter foundations but below walls.
S&ME approved the change to allow the barrier to be constructed either above the foundation, or
below the foundation, as long as the barrier extended from outside edge, continuously below the
slab, to the outside edge of the opposite perimeter foundation. During construction of the project,
S&ME was contracted to observe and document the installation of the vapor mitigation system
and to prepare and submit a report documenting the installation of the system to the North
Carolina Department of Environmental Quality (NCDEQ), Brownfields. During the course of
construction activities, it was noted that the following deviations from the design were noted:
Amended Vapor Mitigation System Design S&ME Project 4335-14-267
Proposed Residences at Gateway Village, Charlotte, North Carolina April 29, 2016
2
No vapor barrier was constructed below the various elevator pits, located throughout the
structure;
No vapor barrier was constructed behind “step up” walls located within the interior of the
apartment structure; and
Perimeter foundations, particularly the common foundation of the precast concrete walls
separating the parking deck from the apartment structure, did not have the vapor barrier
either below the foundation, or above the foundation/below the precast concrete walls,
prior to installation of the precast walls.
In order to mitigate the potential for vapors to enter the apartment building structure and not
require demolition or disassembly of the recently constructed foundations and elevator pits,
S&ME has amended the design for the vapor mitigation system to address these areas of
deviations. Prior to amending the design, S&ME conferred with CETCO (the manufacturer of
Liquid Boot ® membrane system), and with Ms. Carolyn Minnich of the NCDEQ, Brownfields
concerning the applicability and to seek approval of the proposed amended designs. Below is a
summary of the design changes and attached is the actual amended design Vapor Intrusion Barrier
Design:
Elevator Pits: Install Liquid Boot ® membrane inside of the elevator pit walls and
above the concrete bottom, connect into the membrane beneath the surrounding
concrete floor slab.
Internal Step up Walls: Install Liquid Boot ® membrane to the front surface of the
concrete step up wall and connect into the membrane beneath the concrete floor
slab below and above.
Perimeter Foundations: Install Liquid Boot ® membrane to the surface of the
precast concrete walls, facing the apartments, connect into the membrane beneath
the concrete floor slab of the ground floor and extend to above the highest point of
the apartment structure.
S&ME appreciates the opportunity to provide this amended design for the Brownfields project.
Please feel free to contact us if you have any questions regarding the information contained in this
document.
Sincerely,
S&ME, Inc.
Roger A. Smith, L.G. Thomas Raymond, P.E.
Senior Geologist/Project Manager Senior Environmental Engineer
Attachments: Amended - Vapor Intrusion Barrier Design
Cc: Ms. Carolyn Minnich, NCDEQ, Brownfields (via email)
Amended Vapor Intrusion Barrier Design S&ME Project 4335-14-267
Gateway Apartments, West Trade St., Charlotte, NC April 2016 Amended (original design July 2015)
1
AMENDED - VAPOR INTRUSION BARRIER DESIGN
Gateway Apartments
West Trade Street
Charlotte, North Carolina
S&ME Project 4335-14-267
NOTE: This design specification has been amended to address deviations from the original
Vapor Intrusion Barrier Design (July 2015). The deviations from the original design are: a vapor
barrier was not constructed below the various elevator pits located throughout the structure;
a vapor barrier was not constructed behind “step up” walls located within the interior of the
apartment structure; and perimeter foundations, particularly the common foundation of the
precast concrete walls separating the parking deck from the apartment structure, did not have
the vapor barrier either below the foundation, or above the foundation/below the precast
concrete walls, prior to installation of the precast walls.
The original design remains unchanged and must be followed where applicable. The original
design includes Sections 1 through 4 and Figures 1 through 5.
The Amended design includes Sections 5 through 8, and Figures 1A, 6A and 7A.
Amended Vapor Intrusion Barrier Design S&ME Project 4335-14-267
Gateway Apartments, West Trade St., Charlotte, NC April 2016 Amended (original design July 2015)
2
1 GENERAL
The vapor intrusion barrier system is to be installed on the soil subgrade and over the
gravel base and under the concrete slab. The system consists of a gas-venting system
installed within the gravel base, a geotextile base layer, a spray applied vapor intrusion
membrane layer and geotextile protective layer.
1.1 Materials
A. GeoVent® Gas Venting System by Cetco® , or demonstrated equal, having
the following specifications:
Footnotes
1 – High Density Polyethylene
GAS-VENTING SYSTEM CORE PROPERTIES TEST METHOD RESULTS
Material N/A HDPE1
Comprehensive Strength ASTM D-1621 9,500 lbs / ft2
Thickness ASTM D-1777 1.0”
Flow Rate (Hydraulic gradient = 0.1) ASTM D-4716 30 gpm / ft of width
FABRIC PROPERTIES TEST METHOD RESULTS
Mass per Unit Area ASTM D-5261 4.0 oz. per yd2
Grab Tensile Strength ASTM D-4632 115 lbs.
Puncture Strength ASTM D-4833 65 lbs.
Apparent Opening Size (AOS) ASTM D-4751 70 US Sieve
Permeability ASTM D-4491 21 cm/sec
Fabric Flow Rate ASTM D-4491 170 gpm / ft2
UV Resistance ASTM D-4355 70%
DIMENSIONAL DATA
Standard Widths 12”
Roll Length 165 ft
Roll Weight 65 lbs
Amended Vapor Intrusion Barrier Design S&ME Project 4335-14-267
Gateway Apartments, West Trade St., Charlotte, NC April 2016 Amended (original design July 2015)
3
B. BaseFabric ® base layer by Cetco® , or demonstrated equal, having the
following specifications:
C. Liquid Boot ® membrane layer by Cetco® , or demonstrated equal, having
the following specifications:
Fluid applied gas vapor intrusion barrier system – a single course, high build,
polymer modified, asphalt emulsion. Waterborne and spray applied at ambient
temperatures. A minimal thickness of 60 dry mils. Non-toxic and odorless.
BASE LAYER PROPERTIES TEST METHOD RESULTS
Grab Tensile Strength ASTM D-4632 240 lbs.
Elongation ASTM D-4632 60%
Trapezoid Tear ASTM D-4533 90 lbs.
Mullen Burst ASTM D-3786 2,100 psi
UV Stability ASTM D-4355 70%
AOS ASTM D-4751 140 US Sieve
Permittivity ASTM D-4491 1 second-1
Permeability Coefficient ASTM D-4491 0.1 cm/sec
Vertical Water Flow Rate ASTM D-4491 15 gpm/ft2
Puncture ASTM D-4833 70 lbs.
Amended Vapor Intrusion Barrier Design S&ME Project 4335-14-267
Gateway Apartments, West Trade St., Charlotte, NC April 2016 Amended (original design July 2015)
4
D. UltraShield ® G-1000 protective layer by Cetco® ,or demonstrated equal,
having the following specifications:
Polypropylene, staple fiber, non-woven geotextile. Needle-punched fibers.
PROTECTIVE LAYER PROPERTIES TEST METHOD RESULTS
Tensile Bond Strength to Concrete ASTM C 297-94 7 psi
Mass/Unit Area ASTM D 5261 10 oz/yd2
Thickness ASTM D 5199 105 mils
Tensile Strength ASTM D 4632 270 lbs
Elongation ASTM D 4632 50%
Mullen Burst ASTM D 3786 520 psi
Puncture Strength ASTM D 4833 180 lbs.
Trapezoid Tear ASTM D 4533 105 lbs.
UV Resistance ASTM D 4355 70%
A.O.S ASTM D 4751 100 U.S. Sieve
Permittivity ASTM D 4491 1.2 sec-1
Permeability ASTM D 4491 0.30 cm/sec
Water Flow Rate ASTM D 4491 85 gal/min/ft2
1.2 Delivery Storage and Handling
Deliver materials to site in original unbroken packages bearing manufacturers
label showing brand, weight, volume, and batch number. Store materials at
site in strict compliance with manufacturer’s instructions. Do not allow
materials to freeze in containers.
1.3 Submittals
A. Submit product data for each type of vapor intrusion barrier, including
manufacturer’s printed instructions for evaluating and preparing the substrate,
technical data, and tested physical and performance properties.
B. Project Data - Submit shop drawings showing extent of vapor intrusion
barrier, including details for overlaps, flashing, penetrations, and other
termination conditions.
C. Samples – Submit representative samples of the following for approval:
1. Gas-venting core;
2. Gas-venting geotextile fabric;
3. Base layer;
4. Vapor barrier membrane layer;
5. Protective layer.
Amended Vapor Intrusion Barrier Design S&ME Project 4335-14-267
Gateway Apartments, West Trade St., Charlotte, NC April 2016 Amended (original design July 2015)
5
D. Certified Installer Certificates – Submit certificates signed by manufacturer
certifying that installers comply with requirements under the “Quality
Assurance” article.
1.4 Project Conditions
A. Protect all adjacent areas not to receive vapor barrier. Where necessary, apply
masking to prevent staining of surfaces to remain exposed wherever
membrane abuts to other finish surfaces.
B. Perform work only when existing and forecasted weather conditions are
within manufacturer’s recommendations for material and product used.
C. Minimum clearance of required for application of product: 90° spray wand- 2
feet / Conventional spray wand- 4 feet.
D. Ambient temperature shall be within manufacturer’s specifications. If winter
conditions apply, we recommend the use space of heaters and
necessary cover (i.e. polyethylene sheeting) to bring the ambient temperature
to at least +45°F until the protection course and structural slab rebar or a
mudslab protection course has been placed.
E. All plumbing, electrical, mechanical and structural items to be under or
passing through the gas vapor barrier shall be positively secured in their
proper positions and appropriately protected prior to membrane application.
F. Gas vapor barrier shall be installed before placement of reinforcing steel.
When not possible, all exposed reinforcing steel shall be masked by
General Contractor prior to membrane application.
G. Expansion joints must be filled with a conventional waterproof expansion
joint material.
H. Surface preparation shall be per manufacturer’s specification.
2. EXECUTION
2.1 EXAMINATION
All surfaces to receive gas vapor barrier shall be inspected and approved by the applicator
at least one day prior to commencing work.
2.2 SURFACE PREPARATION
Provide 24 inch minimum clearance out from surfaces to receive the gas vapor barrier.
The application surface shall be prepared and provided to the applicator in accordance
with manufacturer’s specifications listed below:
A. Concrete/Shotcrete/Masonry
Concrete surfaces shall be light broom finish or smoother, free of any dirt,
debris, loose material, release agents or curing compounds. Fill all voids more
than 1/4 inch deep and 1/4 inch wide. Masonry joints, cold joints, and form
joints shall be struck smooth. All penetrations shall be prepared in accordance
Amended Vapor Intrusion Barrier Design S&ME Project 4335-14-267
Gateway Apartments, West Trade St., Charlotte, NC April 2016 Amended (original design July 2015)
6
with manufacturer’s specifications. Provide a 3/4 inch minimum cant of
Liquid Boot®, or other suitable material as approved by manufacturer, at all
horizontal to vertical transitions and other inside corners of 120° or less.
Allow to cure overnight before the application of Liquid Boot®. All cracks or
cold joints greater than 1/16 inch must be completely grouted with non-shrink
grout as approved by engineer. Install hardcast reinforcing tape over all cold
joints, cracks and form tie holes (after holes and cracks are grouted).
B. Dirt & Gravel
The sub-grade shall be moisture conditioned and compacted to a minimum
relative compaction of 90 percent or as specified by the
civil/structural/geotechnical engineer. The finished surface shall be smooth,
uniform, and free of debris and standing water. Remove all stones or dirt clods
greater than 1/4 inch. (NOTE: Aggregate sub-bases shall be rolled flat, free
from any protruding sharp edges). Penetrations shall be prepared in
accordance with manufacturer’s specifications. All form stakes that penetrate
the membrane shall be of rebar which shall be bent over and left in the slab.
Trenches shall be cut oversize to accommodate gas vapor barrier membrane
and protection course with perpendicular to sloped sides and maximum
obtainable compaction. Adjoining grade shall be finish graded and compacted.
Excavated walls shall be vertical or sloped back, free of roots and protruding
rocks. Specific sub-grade preparation shall be designed by a qualified civil or
geotechnical engineer. If organic materials with potential for growth (i.e.:
seeds or grasses) exist within the sub-base, spray apply soil sterilant at the
sterilant manufacturer's recommended rate.
3. VAPOR INTRUSION BARRIER SYSTEM INSTALLATION
3.1 INSTALLATION ON CONCRETE/SHOTCRETE/MASONRY
(Follow the procedures below carefully)
A. Refer to section 3.3, "Sealing Around Penetrations", for procedures to seal the
vapor intrusion barrier around penetrations.
B. Provide a ¾” minimum bead of Liquid Boot® material, or other suitable
material as approved by engineer, at all horizontal to vertical transitions and
other inside corners of 120° or less. Allow to cure overnight before the
application of Liquid Boot membrane®.
C. Delineate a test area on site with a minimum dimension of 10 feet by 10 feet
(3m by 3m). Apply Liquid Boot® to a thickness of 60 mils and let it cure for 24
hours. Observe for blisters. If minor or no blistering occurs, proceed to the next
step. (See note regarding blisters). If significant blistering does occur, apply a
thin (10 mil) tack coat of Liquid Boot® “A” side without catalyst to the entire
Amended Vapor Intrusion Barrier Design S&ME Project 4335-14-267
Gateway Apartments, West Trade St., Charlotte, NC April 2016 Amended (original design July 2015)
7
concrete surface and allow curing before proceeding. (See also information
regarding blister repair).
D. Spray-apply Liquid Boot® to a 60 mil minimum dry thickness. Increase
thickness to 100 dry mils if shotcrete is to be applied directly to membrane. If a
second coat is required, remove any standing water from the membrane before
proceeding with the second application.
E. Do not penetrate membrane. Keep membrane free of dirt and debris and traffic
until a protective cover is in place. It is the responsibility of the General
Contractor to insure that the membrane and the protection system are not
penetrated.
F. After membrane has cured and checked for proper thickness and flaws, install
protection material pursuant to manufacturer’s instructions.
NOTE: All testing or inspection to be performed prior to placing protection
course. NON-HORIZONTAL SURFACES: Spray on non-horizontal surfaces
should begin at the bottom and work towards the top. This method allows
the product to adhere to the surface before hitting catalyst runoff.
NOTE: Due to the nature of concrete as a substrate, it is normal for some
blistering to occur. This is caused by either concrete's tendency to off-gas or
water that is temporarily trapped between the concrete and the membrane. With
time and the applied pressure of backfill or over-slab, blisters will absorb into
the concrete without detriment to the membrane. A small number of blister
heads should be sampled and checked for proper membrane thickness. If the
samples have the minimum required membrane thickness, then the remaining
blisters should not be punctured or cut. If the samples have less than the
minimum required membrane thickness, then the area can either be re-sprayed
to obtain the proper thickness, or the blisters can be cut out and the area
resprayed or patched with Liquid Boot® Trowel Grade.
3.2 INSTALLATION ON DIRT SURFACES AND MUDSLABS
A. Roll out BaseFabric® T-60 geotextile on sub-grade with the heat-rolled side
facing up. Overlap seams a minimum of 6 inches. Lay geotextile tight at all
inside corners. Apply a thin 10 mil tack coat of Liquid Boot® “A” side without
catalyst within the seam overlap. Line trenches with geotextile extending at
least six inches (6") onto adjoining sub-grade if slab and footings are to be
sprayed separately.
B. Minimize the use of nails to secure the geotextile to the dirt subgrade. Remove
all nails before spraying membrane, if possible. Nails that cannot be removed
from the dirt subgrade are to be patched with geotextile or hardcast reinforcing
tape overlapping the nail head by a minimum of two inches (2"). Apply a thin
Amended Vapor Intrusion Barrier Design S&ME Project 4335-14-267
Gateway Apartments, West Trade St., Charlotte, NC April 2016 Amended (original design July 2015)
8
tack coat of Liquid Boot® under the geotextile patch, when patching with
geotextile.
C. Refer to section 3.3, "Sealing Around Penetrations", for procedures to seal
around penetrations.
D. Spray-apply Liquid Boot® onto geotextile to a 60 mil minimum dry thickness.
Increase thickness to 100 dry mils if shotcrete is to be applied directly to
membrane. If a second coat is required, remove any standing water from the
membrane before proceeding with the second application.
E. Do not penetrate membrane. Keep membrane free of dirt, debris and traffic until
a protective cover is in place. It is the responsibility of the General Contractor to
insure that the membrane and the protection system are not penetrated.
F. After membrane has cured and checked for proper thickness and flaws, install
protection material pursuant to manufacturer’s instructions.
NOTE: All testing or inspection to be performed prior to placing protection course.
3.3 SEALING AROUND PENETRATIONS
3.3.1 OPTION 1
A. Clean all penetrations. All metal penetrations shall be sanded clean with emery
cloth.
B. Lay BaseFabric® layer on sub-grade with the heat-rolled side facing up,
overlapping seams a minimum of six inches (6"). Cut the geotextile around
penetrations so that it lays flat on the sub-grade. Lay BaseFabric® tight at all
inside corners. Apply a thin (10 mil) tack coat of Liquid Boot® “A” side
without catalyst within the seam overlap. BaseFabric® should extend up
penetration no more than 1”. Wrap penetration with polypropylene cable tie at a
point two inches (2") above the base of the penetration to hold the BaseFabric®
layer in place.
C. Spray apply Liquid Boot® to an 60 mils minimum dry thickness around the
penetration, completely encapsulating the collar assembly and to a height of one
and one half inches (1 1/2") minimum above the BaseFabric® as described in
3.3.1 B above. Spray-apply Liquid Boot® to surrounding areas as specified for
the particular application. (SEE MANUFACTURER’S STANDARD DETAIL)
Amended Vapor Intrusion Barrier Design S&ME Project 4335-14-267
Gateway Apartments, West Trade St., Charlotte, NC April 2016 Amended (original design July 2015)
9
3.4 FIELD QUALITY CONTROL
Field Quality Control is a very important part of all Liquid Boot® applications.
Applicators should check their own work for coverage, thickness, and all
around good workmanship before calling for inspections. The membrane must
be cured at least overnight before inspecting for dry-thickness, holes, shadow
shrinkage, and any other membrane damage. If water testing is to be performed,
allow the membrane to cure at least 72 hours prior to the water test. When
thickness or integrity is in question the membrane should be tested in the proper
manner as described below.
3.4.1 ON CONCRETE/SHOTCRETE/MASONRY & OTHER HARD
SURFACES
A. Membrane shall be checked for proper thickness with a blunt-nose depth gauge,
taking one reading every 500 square feet. Record the readings. Mark the test
area for repair, if necessary.
B. If necessary, test areas shall be patched over with Liquid Boot® to a 60 mils
minimum dry thickness, extending a minimum of one inch (1") beyond the test
perimeter.
3.4.2 ON DIRT AND OTHER SOFT SUBSTRATES
A. Samples shall be cut from the membrane and geotextile sandwich to a
maximum area of 2 square inches. Measure the thickness with a mil reading
caliper, per 500 sq. feet. Deduct the plain geotextile thickness to determine the
thickness of Liquid Boot® membrane. Mark the test area for repair.
B. Voids left by sampling shall be patched with geotextile overlapping the void by
a minimum of two inches (2"). Apply a thin tack coat of Liquid Boot® under
the geotextile patch. Then spray or trowel-apply Liquid Boot® to a 60 mils
minimum dry thickness, extending at least three inches (3") beyond geotextile
patch.
3.4.3 SMOKE TESTING FOR HOLES
A smoke test shall be conducted by the contractor/applicator to detect any holes
or other breaches in the membrane. A smoke test involves pumping smoke
under the membrane for a specified period of time, under a specified pressure,
which varies from project to project.
Amended Vapor Intrusion Barrier Design S&ME Project 4335-14-267
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4. QUALITY ASSURANCE
A. Gas vapor barrier contractor/applicator shall be certified by the vapor barrier
manufacturer. A pre-installation conference shall be held prior to application
of gas vapor barrier to assure proper substrate and installation conditions, to
include contractor, applicator, architect/engineer, special vapor barrier
inspector and other trades influenced by vapor barrier installation.
B. Manufacturer Qualification: Obtain vapor intrusion barrier materials and
system components from a single manufacturer source.
C. Field Sample: Apply vapor intrusion barrier system field sample to
approximately 100 square feet of work site surface area to demonstrate
application, detailing, thickness, texture, and standard of workmanship.
1. Notify engineer one week in advance of the dates and times when field
sample will be prepared.
2. If engineer determines that field sample does not meet requirements,
reapply field sample until field sample is approved.
3. Retain and maintain approved field sample during construction in an
undisturbed condition as a standard for judging the completed vapor
intrusion barrier. An undamaged field sample may become part of the
completed work.
A. Coupon Sampling: Coupon sampling is the most accurate way to verify the
Liquid Boot® thickness. The following steps will be followed by the
engineer or designated representative:
1. Create a membrane testing log by obtaining a copy of the foundation
plan and then draw a 500 square foot grid over the foundation plan.
2. Note time, date, project name, inspector name, temperature and weather
conditions on testing log.
3. Number each quadrant and inspect sequentially.
4. When arriving at each quadrant quickly assess if there are any conditions
that might present any challenges in establishing a proper seal. Note
areas and discuss with applicator.
5. Conduct a visual inspection of the membrane. Look for areas where a
proper seal was not created, i.e. a fish-mouth at the termination and areas
where the membrane might be sprayed thin. Mark areas needed for
repair in the field with florescent paint or with chalk. Also make a note
on the testing log.
6. Calibrate mil reading caliper to account for the thickness of the
BaseFabric® layer. This is best done by obtaining a sample of the
BaseFabric® layer and then zeroing out the caliper to the BaseFabric®
layer.
Amended Vapor Intrusion Barrier Design S&ME Project 4335-14-267
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11
7. Collect a coupon sample in the area that is suspected to be sprayed thin.
Use a box cutter to cut a 3 square inch sample from the membrane.
Measure each side to confirm the specified minimum thickness has been
obtained. Number each sample and save in the job file. Mark the area for
repair in the field and on the site plan.
8. After sampling five quadrants it is at the discretion of the inspector to
continue collecting samples every 500 or 1,000 square feet.
9. Samples may be collected prior to the Liquid Boot® layer fully curing.
Observed shrinkage of the Liquid Boot® layer during the curing process
for horizontal surfaces is 10%. Assuming a 10% loss, a minimum of 66
mills thickness should be measured for a cured measurement of 60 mils.
Keep the coupon samples for the file.
B. Visual inspections prior to placement of concrete, but after the installation of
concrete reinforcing, is recommended to identify punctures that may have
occurred during the installation of rebar, post tension cables, etc. Punctures
in the Liquid Boot® system should be easy to indentify due to the color
contrasting layers of the system.
C. Smoke Testing: Smoke Testing shall be conducted by pumping non-toxic
smoke underneath the Liquid Boot® vapor barrier membrane and then
repairing the areas where smoke appears. This test is intended to visually
verify and confirm the proper installation of the Liquid Boot® system. The
smoke test will be performed by the applicator. Smoke testing should occur
after the Liquid Boot® layer has been installed and mil thickness verified and
before the UltraShield® G-1000 layer is installed. To conduct a smoke test
follow these steps:
1. One smoke test can cover between 2,000-3,000 square feet per test.
However, coverage will greatly depend on the sub grade under the
membrane. On sites where multiple smoke tests will be needed, use the first
two smoke tests to estimate the coverage area per test.
2. Visual verification of soundness of seams, terminations and penetrations
should be performed. Identify/correct any apparent deficiencies and/or
installation problems.
3. Note time, date, project name, inspector name, temperature and weather
conditions on testing log. In addition, record humidity, barometric pressure,
and wind speed/direction. Confirm wind speed is below 15 mph. Visual
identification of leaks becomes more difficult with increasing wind speed.
4. Cap other vapor-vents and outlets.
5. Activate the smoke generator/blower system and connect to sub-slab vent
riser.
6. To confirm the adequate flow of smoke under the membrane cut a 2” vent
in the membrane to facilitate the purging of air pockets under it. If working
properly, smoke will consistently flow though the 2” vent. If a low rate of
smoke flow is observed it is an indication of poor smoke flow under the
Amended Vapor Intrusion Barrier Design S&ME Project 4335-14-267
Gateway Apartments, West Trade St., Charlotte, NC April 2016 Amended (original design July 2015)
12
membrane. If low flow does occur, insert the smoke testing hose into the 2”
membrane vent.
7. Mark sampling locations with fluorescent paint or chalk. Repair sampling
locations.
8. Maintain operation of smoke generator/blower system for at least 15
minutes following purging of membrane. Thoroughly inspect entire
membrane surface. Use fluorescent paint or chalk to mark/label any leak
locations. Mark/label leak locations on testing log. NOTE: The duration of
the smoke test will vary depending on the size of the area being tested. To
help determine the duration, monitor the pressure building up under the
membrane. If excessive lifting of the membrane occurs, decrease the duration
or pressure of the smoke test.
9. Engineer or representative will document in membrane inspection log.
Identify the type of leak found, i.e. poor seal around penetration, fish-mouth,
puncture, etc.
10. Repair leak locations as demonstrated in the Repair Sequence presented
on Figure 5.
11. Repeat steps 4 through 10 as necessary to confirm the integrity of the
membrane.
12. The engineer will complete the smoke testing inspection form indicating
the successful completion of the smoke test.
D. Post Installation Inspection: After the engineer signs off on the membrane
installation and the steel workers begin to install the rebar, it is recommended
to conduct a visual inspection prior to the pouring of concrete. Damages are
most likely to occur during this time and it is imperative that punctures are
identified prior to the placement of the slab.
AMENDED DESIGN/SPECIFICATIONS
The following presents amended design/specifications to the above due to deviations
during construction from the July 2015 design and specifications. These amendments are
not intended to supersede the original design, but are presented as an approved remedy to
protect the occupants of the structure from potential vapor intrusion due to impacted
groundwater at the site. The design and quality assurance requirements presented above
are required where applicable.
5. GEOVENT & RISERS – AMENDED VAPOR BARRIER
DESIGN
In order to address construction concerns and attempt to clarify the location of the
vertical risers for venting of vapors captured from below the vapor barrier, Figure
1A, Amended for Clarification, Vapor Barrier Sub-Slab Layout, presents
amended locations of the Geo Vent and vapor vent risers.
Amended Vapor Intrusion Barrier Design S&ME Project 4335-14-267
Gateway Apartments, West Trade St., Charlotte, NC April 2016 Amended (original design July 2015)
13
6. INTERNAL STEP-UP WALLS & WALL SECTIONS AT
PARKING GARAGE
At locations where internal foundations, step-up walls, perimeter foundations, and
where a common wall is shared between the apartment space and parking deck
but the vapor barrier was not installed below the foundations and/or between the
ground surface and the internal step-up walls during construction, the following is
required as acceptable amendments. Areas where footings have not yet been
installed, the vapor barrier system shall be installed as presented above.
The Liquid Boot® is to be applied directly to the top of the foundation/front of the
apartment side of step-up walls and walls shared with the apartment and parking
deck. Application of the Liquid Boot® barrier on the internal step-up wall is to
be tied directly into the barrier located beneath the lower level concrete slab and
the upper level concrete slab. Application of the Liquid Boot® on the shared wall
with the apartment and parking deck is to extend to above the highest point of the
apartment structure or, if the apartment structure is higher than the parking deck,
the Liquid Boot® is to wrap above the top of wall and attach to the wall on the
parking deck side. Figure 6A, Vapor Barrier Details - 5, presents the
application scenarios of Liquid Boot® and the required permanent structural
covering it to protect the Liquid Boot®. As required above, Liquid Boot® shall
be applied to a dry thickness of 60 mils. The Liquid Boot® applied to the walls
must be tied into the Liquid Boot® under the slabs to ensure that a continuous
vapor barrier is installed.
7. ELEVATOR PITS – AMENDED VAPOR BARRIER DESIGN
In order to mitigate potential vapors from entering the apartment structure from
the elevator pits, where the vapor barrier was not installed between the ground
surface and the elevator pit, the vapor barrier shall be installed inside the elevator
pit. At locations where elevator pits have not yet been installed, the vapor barrier
system shall be installed as presented above.
The Liquid Boot® is to be applied directly to the concrete surface on the inside of
the elevator pit. Figure 7A, Vapor Barrier Details - 6, presents the locations of
the application of Liquid Boot® and the required permanent structural covering it
to protect the Liquid Boot®. As required above, the Liquid Boot® shall be
applied to a dry thickness of 60 mils. The Liquid Boot® applied to the walls and
sump pit must be tied into the Liquid Boot® under the slabs to ensure that a
continuous vapor barrier is installed.
8. QUALITY ASSURANCE–AMENDED FOR SECTIONS 6 & 7
The quality assurance requirements presented in Section 4 apply with the
exception of smoke testing. The Liquid Boot® to be applied to the areas under
the amended design cannot be quality tested with blowing smoke beneath the
Liquid Boot®, which would break the bond with the concrete surface. Therefore,
Appendix IV – Vapor Mitigation Inspection Logs and Sample
Grid Locations on Horizontal Surfaces Map, and Barrier
Thickness on Vertical Surfaces Map
Inspector (s): Name (s):Date:
Weather:
Temperature:
Location
Base Layer
Observation?
GenerallyInstalled PerSpecifications?Sample ID
Average
Thickness
(inches)
Average
Thickness
(mils)Pass/Fall²
Smoke
Testing
Conducted?
Smoke Testing
Pass?Comments
A 0.0690
B 0.0750
C 0.0700
A 0.0700
B 0.0590
C 0.0660
A 0.0640
B 0.0720
C 0.0670
A 0.0480
B 0.0540
C 0.0580
A 0.0815
B 0.0800
C 0.0795
A 0.0640
B 0.0790
C 0.0890
A 0.0810
B 0.0940
C 0.0710
A 0.1015
B 0.0880
C 0.0850
A 0.0685
8 0.0710
C 0.0640
A 0.0665
B 0.0670
C 0.0650
Notes:
1 Thickness measured with pre-calibrated calipers.
2 Thickness measurement required to be a minimum of 60 mil (0.060") for Liquid Boot spray applied layer if T-40 or T-60 base fabric is used. A minimum thickness of 40 mil (0.040") of Liquid Boot spray applied layer is recommended if the VI-20 base layer is used.
Sampling every 1000 sq.ft (3/24/16) @ 0830
Lay base layer of VI-20 and spray liquid
boot on 3-22-16 G-05 Yes Yes 6-05 0.0662 Pass Yes Pass Sampling every 1000 sq.ft (3/24/16 @ 0830
Lay base layer of VI-20 and spray liquidboot on 3-22-16 G-04 Yes Yes G-04 0.0678 Pass Yes Pass67.8
66.2
Sampling every 1000 sqft (3/24/16) @ 0800
Lay base layer of VI-20 and spray liquid
boot on 3-22-16 G-03 Yes Yes 6-03 0.0915 Pass Yes Pass Sampling every 1000 sq.ft (3/24/16)
@ 0800
Lay base layer of VI-20 and spray liquidboot on 3-22-16 G-02 Yes Yes G-02 0.0820 Pass Yes Pass82.0
91.5
Multiple samples collected to assure properthickness. (3-23-16)
Lay base layer of VI-20 and spray liquid
boot on 3-22-16 6-14 Yes Yes G-14/s3 0.0773 Pass Yes Pass Multiple samples collected to assure
proper thickness. (3-23-16)
Lay base layer of VI-20 and spray liquidboot on 3-22-16 G-14 Yes Yes G-14/s2 0.0803 Pass Yes Pass80.3
77.3
Multiple samples collected to assure properthickness. (3-23-16)
Lay base layer of VI-20 and spray liquid
boot on 3-22-16 G-14 Yes Yes G-14/s1 0.0567 Pass Yes Pass Multiple samples collected to assure
proper
thickness. (3-23-16)
Lay base layer of VI-20 and spray liquidboot on 3-22-16 G-01 Yes Yes G-01/s3 0.0677 Pass Yes Pass67.7
56.7
0.0713 Pass Yes Pass Multiple samples collected to assure properthickness. (3-23-16)
Lay base layer of VI-20 and spray liquidhoot on 3-22-16 6-01 Yes Yes G-01/s2 0.0650 Pass Yes Pass Multiple samples collected to assure proper
thickness. (3-23-16)
71.3
65.0
Clear light winds
Activity
Measured Thickness Base and CoreLayers' (inches)
Lay base layer of VI-20 and spray liquidboot on 3-22-16 G-01 Yes Yes G-01/s1
Charlotte, North Carolina
S&ME Project No. 4335-14-267 Ph. 05
Vapor Mitigation System Inspection Log
Residences at Gateway Villiage
Matthew Brundage 3/24/2016
Inspector (s): Name (s):Date:
Weather:
Temperature:
Location
Base Layer
Observation?
GenerallyInstalled PerSpecifications?Sample ID
Average
Thickness
(inches)
Average
Thickness
(mils)Pass/Fall²
Smoke
Testing
Conducted?
Smoke Testing
Pass?Comments
A 0.0675
B 0.0770
C 0.0660
A 0.0570
B 0.0595
C 0.0565
A 0.0580
B 0.0495
C 0.0930
A 0.0950
B 0.0475
C 0.0560
A 0.0475
B 0.0560
C 0.0475
A 0.0595
B 0.0560
C 0.0780
Notes:
Matthew Brundage 3/24/2016
Clear light winds
Activity
Measured Thickness Base and CoreLayers' (inches)
Vapor Mitigation System Inspection Log
Residences at Gateway Villiage
Charlotte, North Carolina
S&ME Project No. 4335-14-267 Ph. 05
Pass Yes Pass Multiple samples collected to assure proper thickness. (3-23-16)
Lay base layer of VI-20 and spray liquid boot on 3-22/16 G-07 Yes Yes 6-07 0.0577
Lay base layer of VI-20 and spray liquidboot on 3-22-16 G-06 Yes Yes 6-06 0.0702
Pass Yes Pass Multiple samples collected to assure proper thickness (3-23-16)
70.2
57.7
Multiple samples collected to assure proper thickness. (3-23-16)
Lay base layer of Vl-20 and spray liquid
boot on 3-22-16 0-09 Yes Yes 6-09 0.0668 Pass Yes Pass Multiple samples collected to assure
proper thickness. (3-23-16)
Lay base layer of VI-20 and spray liquidboot on 3-22-16 G-08 Yes Yes 0-08 0.0668 Pass Yes Pass66.8
66.8
Multiple samples collected to assure proper thickness. (3-23-16)
Lay base layer of VI-20 and spray liquid
boot on 3-22-16 G-11 Yes Yes G-11 0.0645 Pass Yes Pass Multiple samples collected to assure
proper thickness. (3-23-16)
Lay base layer of VI-20 and spray liquidboot on 3-22-16 G-10 Yes Yes G-10 0.0503 Pass Yes Pass50.3
64.5
1 Thickness measured with pre-calibrated calipers.
2 Thickness measurement required to be a minimum of 60 mil (0.060") for Liquid Boot spray applied layer if T-40 or T-60 base fabric is used. A minimum thickness of 40 mil (0.040") of Liquid Boot spray applied layer is recommended if the VI-20 base layer is used.
Inspector (s): Name (s):Date:
Weather:
Temperature:70's
Location
Base Layer
Observation?
GenerallyInstalled PerSpecifications?Sample ID
Average
Thickness
(inches)
Average
Thickness
(mils)Pass/Fall²
Smoke
Testing
Conducted?
Smoke Testing
Pass?Comments
A 0.0695
B 0.0725
C 0.0745
A 0.0650
B 0.0570
C 0.0590
A 0.0495
B 0.0890
C 0.0495
A 0.0535
8 0.0590
C 0.0585
A 0.0535
B 0.0565
C 0.0650
A 0.0820
B 0.0990
C 0.0955
A 0.0680
B 0.0585
C 0.0695
A 0.0600
B 0.0770
C 0.0770
A 0.0535
B 0,0.595
C 0.0510
A 0.0625
B 0.0570
C 0.0585
Notes:
Matthew Brundage 3/26/2016
Clear light winds
Activity
Measured Thickness Base and CoreLayers' (inches)
Vapor Mitigation System Inspection Log
Residences at Gateway Villiage
Charlotte, North Carolina
S&ME Project No. 4335-14-267 Ph. 05
Pass Yes Pass Sampled every 1000 sq.ft @1030 (3-26-16)
Lay base layer of VI-20 and spray liquidboot on 3/25/16 G-13 Yes Yes G-13 0.0603
Lay base layer of VI-20 and spray liquidhoot on 3/25/16 G-12 Yes Yes G-12 0.0722
Pass Yes Pass Sampled every 1000 sq.ft @1030 (3-26-16)
72.2
60.3
Sampled every 1000 sq.ft @1030 (3-26-16)
Lay base layer of VI-20 and spray liquid
boot on 3/25/16 G-15 Yes Yes G-15 0.0570 Pass Yes Pass Sampled every 1000 sq.ft @1030 (3-26-
16)
Lay base layer of VI-20 and spray liquidboot on 3/25/16 G-14 Yes Yes G-14 0.0627 Pass Yes Pass62.7
57.0
Sampled every 1000 sq.ft @1030 (3-26-16)
Lay base layer of VI-20 and spray liquid
boot on 3/25/16 G-17 Yes
Yes
G-17 0.0922 Pass Yes Pass Sampled every 1000 sq.ft @1030 (3-26-
16)
Lay base layer of VI-20 and spray liquidboot on 3/25/16 0-16 Yes Yes G-16 0.0583 Pass Yes Pass58.3
92.2
Sampled every 1000 sq.ft @1030 (3-26-16)
Lay base layer of VI-20 and spray liquid
boot on 3/25/16 G-19 Yes Yes G-19 0.0713 Pass Yes Pass Sampled every 1000 sq.ft @1030 (3-26-
16)
Lay base layer of VI-20 and spray liquidboot on 3/25/16 G-18 Yes Yes G-18 0.0653 Pass Yes Pass65.3
71.3
Sampled every 1000 sq.ft @1030 (3-26-16)
1 Thickness measured with pre-calibrated calipers.
2 Thickness measurement required to be a minimum of 60 mil (0.060") for Liquid Boot spray applied layer if T-40 or T-60 base fabric is used. A minimum thickness of 40 mil (0.040") of Liquid Boot spray applied layer is recommended if the VI-20 base layer is used.
Pass Yes Pass Sampled every 1000 sq.ft @1030 (3-26-16)
Lay base layer of VI-20 and spray liquid
boot on 3/25/16 0-21 Yes Yes G-21 0.0593
Lay base layer of VI-20 and spray liquidboot on 3/25/16 0-20 Yes Yes G-20 0.0547
Pass Yes Pass
54.7
59.3
Inspector (s): Name (s):Date:
Weather:
Temperature:
Location
Base Layer
Observation?
GenerallyInstalled PerSpecifications?Sample ID
Average
Thickness
(inches)
Average
Thickness
(mils)Pass/Fall²
Smoke
Testing
Conducted?
Smoke Testing
Pass?Comments
A 0.0945
0 0-0965
C 0.0805
A 0.0840
B 0.0580
C 0.0845
A 0,0665
B 0.0770
C 0.0840
Notes:
Matthew Brundage 3/26/2016
Clear light winds
Activity
Measured Thickness Base and CoreLayers' (inches)
Vapor Mitigation System Inspection Log
Residences at Gateway Villiage
Charlotte, North Carolina
S&ME Project No. 4335-14-267 Ph. 05
Pass Yes Pass Sampled every 1000 sq.ft @1030 (3-26-16)
Lay base layer of VI-20 and spray liquidboot on 3/25/16 G-23 Yes Yes 0-23 0.0755
Lay base layer of VI-20 and spray liquidboot on 3/25/16 G-22 Yes Yes G-22 0.0905
Pass Yes Pass Sampled every 1000 sq.ft @1030 (3-26-16)
90.5
75.5
Sampled every 1000 sq.ft @1030 (3-26-16) Lay base layer of VI-20 and spray liquidboot on 3/25/16 G-24 Yes Yes G-24 0.0758 Pass Yes Pass75.8
1 Thickness measured with pre-calibrated calipers.
2 Thickness measurement required to be a minimum of 60 mil (0.060") for Liquid Boot spray applied layer if T-40 or T-60 base fabric is used. A minimum thickness of 40 mil (0.040") of Liquid Boot spray applied layer is recommended if the VI-20 base layer is used.
Inspector (s): Name (s):Date:
Weather:
Temperature:60's
Location
Base Layer
Observation?
GenerallyInstalled PerSpecifications?Sample ID
Average
Thickness
(inches)
Average
Thickness
(mils)Pass/Fall²
Smoke
Testing
Conducted?
Smoke Testing
Pass?Comments
A 0.0560
B 0.0460
C 0.0440
A 0.0650
B 0.0550
C 0.0630
A 0.0425
B 0.0405
C 0.0395
A 0.0500
B 0.0470
C 0.0410
A 0.0610
B 0.0480
C 0.0560
A 0.0550
B 0.0510
C 0.0560
A 0.0440
B 0.0550
C 0.0575
A 0.0370
B 0.0485
C 0.0495
A 0.0580
B 0.0500
C 0.0550
A 0.0450
B 0.0410
C 0.0395
Notes:
Sampled every 1000 sq.ft. @ 0730 3-29-16
1 Thickness measured with pre-calibrated calipers.
2 Thickness measurement required to be a minimum of 60 mil (0.060") for Liquid Boot spray applied layer if T-40 or T-60 base fabric is used. A minimum thickness of 40 mil (0.040") of Liquid Boot spray applied layer is recommended if the VI-20 base layer is used.
Pass Yes Pass Sampled every 1000 sq.ft. @ 0730 3-29-16
Lay base layer of VI-20 and spray liquid boot on 3/28/16 G-34 Yes Yes G-34 0.0418
Lay base layer of VI-20 and spray liquid boot on 3/28/16 G-33 Yes Yes G-33 0.0543
Pass Yes Pass
54.3
41.8
Sampled every 1000 sq.ft. @ 0730 3-29-16
Lay base layer of VI-20 and spray liquid
boot on 3/28/16 G-32 Yes Yes G-32 0.0450 Pass Yes Pass Sampled every 1000 sq.ft. @ 0730 3-
29-16
Lay base layer of VI-20 and spray liquid boot on 3/28/16 G-31 Yes Yes G-31 0.0522 Pass Yes Pass52.2
45.0
Sampled every 1000 sq.ft. @ 0730 3-29-16
Lay base layer of VI-20 and spray liquid
boot on 3/28/16 G-30 Yes Yes G-30 0.0510 Pass Yes Pass Sampled every 1000 sq.ft. @ 0730 3-
29-16
Lay base layer of VI-20 and spray liquid boot on 3/28/16 G-29 Yes Yes G-29 0.0550 Pass Yes Pass55.0
51.0
Sampled every 1000 sq.ft. @ 0730 3-29-16
Lay base layer of VI-20 and spray liquid
boot on 3/28/16 G-28 Yes Yes G-28 0.0460 Pass Yes Pass Sampled every 1000 sq.ft. @ 0730 3-
29-16
Lay base layer of VI-20 and spray liquid boot on 3/28/16 G-27 Yes Yes G-27 0.0408 Pass Yes Pass40.8
46.0
Pass Yes Pass Sampled every 1000 sq.ft. @ 0730 3-29-16
Lay base layer of VI-20 and spray liquid boot on 3/28/16 G-26 Yes Yes G-26 0.0610
Lay base layer of VI-20 and spray liquid boot on 3/28/16 G-25 Yes Yes G-25 0.0487
Pass Yes Pass Sampled every 1000 sq.ft. @ 0730 3-29-16
48.7
61.0
Matthew Brundage 3/29/2016
Clear light winds
Activity
Measured Thickness Base and CoreLayers' (inches)
Vapor Mitigation System Inspection Log
Residences at Gateway Villiage
Charlotte, North Carolina
S&ME Project No. 4335-14-267 Ph. 05
Inspector (s): Name (s):Date:
Weather:
Temperature:60's
Location
Base Layer
Observation?
GenerallyInstalled PerSpecifications?Sample ID
Average
Thickness
(inches)
Average
Thickness
(mils)Pass/Fall²
Smoke
Testing
Conducted?
Smoke Testing
Pass?Comments
A 0.0620
B 0.0500
C 0.0490
A 0.0470
B 0.0660
C 0.0460
Notes:
1 Thickness measured with pre-calibrated calipers.
2 Thickness measurement required to be a minimum of 60 mil (0.060") for Liquid Boot spray applied layer if T-40 or T-60 base fabric is used. A minimum thickness of 40 mil (0.040") of Liquid Boot spray applied layer is recommended if the VI-20 base layer is used.
Pass Yes Pass Sampled every 1000 sq.ft @ 0730 4-5-16
Lay base layer of VI-20 and spray liquid boot on 4/4/16 G-36 Yes Yes G-36 0.0530
Lay base layer of VI-20 and spray liquid boot on 4/4/16 0-35 Yes Yes 0-35 0.0537
Pass Yes Pass Sampled every 1000 sq.ft @ 0730 4-5-16
53.7
53.0
Matthew Brundage 4/5/2016
Clear light winds
Activity
Measured Thickness Base and CoreLayers' (inches)
Vapor Mitigation System Inspection Log
Residences at Gateway Villiage
Charlotte, North Carolina
S&ME Project No. 4335-14-267 Ph. 05
Inspector (s): Name (s):Date:
Weather:
Temperature:60's
Location
Base Layer
Observation?
GenerallyInstalled PerSpecifications?Sample ID
Average
Thickness
(inches)
Average
Thickness
(mils)Pass/Fall²
Smoke
Testing
Conducted?
Smoke Testing
Pass?Comments
A 0.0815
B 0.0825
C 0.0645
A 0.0640
B 0.0680
C 0.0660
A 0.0540
B 0.0880
C 0.0570
A 0.0600
8 0,0480
C 0.0480
A 0.0460
B 0.0870
C 0.0845
Notes:
1 Thickness measured with pre-calibrated calipers.
2 Thickness measurement required to be a minimum of 60 mil (0.060") for Liquid Boot spray applied layer if T-40 or T-60 base fabric is used. A minimum thickness of 40 mil (0.040") of Liquid Boot spray applied layer is recommended if the VI-20 base layer is used.
Sampled every 1000 sq.ft @ 10:00 4-16-16Lay base layer of VI-20 and spray liquid boot on 4-15-16 G-41 Yes Yes 0-41 0.0725 Pass Yes Pass72.5
Sampled every 1000 sq.ft @ 10:00 4-16-16
Lay base layer of VI-20 and spray liquid
boot on 4-15-16 G-40 Yes Yes G-40 0.0520 Pass Yes Pass Sampled every 1000 sq.ft @ 10:00 4-
16-16
Lay base layer of VI-20 and spray liquid boot on 4-15-16 G-39 Yes Yes G-39 0.0663 Pass Yes Pass66.3
52.0
Pass Yes Pass Sampled every 1000 sq.ft @ 10:00 4-16-16
Lay base layer of VI-20 and spray liquid boot on 4-15-16 G-38 Yes Yes G-38 0.0660
Lay base layer of VI-20 and spray liquid hoot on 4/15-16 G-37 Yes Yes G-37 0.0762
Pass Yes Pass Sampled every 1000 sq.ft @ 10:00 4-16-16
76.2
66.0
Matthew Brundage 4/16/2016
Clear light winds
Activity
Measured Thickness Base and CoreLayers' (inches)
Vapor Mitigation System Inspection Log
Residences at Gateway Villiage
Charlotte, North Carolina
S&ME Project No. 4335-14-267 Ph. 05
Inspector (s): Name (s):Date:
Weather:
Temperature:70's
Location
Base Layer
Observation?
GenerallyInstalled PerSpecifications?Sample ID
Average
Thickness
(inches)
Average
Thickness
(mils)Pass/Fall²
Smoke
Testing
Conducted?
Smoke Testing
Pass?Comments
A 0.0805
B 0.0895
C 0.0890
A 0.0915
B 0.0995
C 0.0965
A 0.0710
B 0.0765
C 0.0735
A 0.0545
B 0.0810
C 0.0965
Notes:
1 Thickness measured with pre-calibrated calipers.
2 Thickness measurement required to be a minimum of 60 mil (0.060") for Liquid Boot spray applied layer if T-40 or T-60 base fabric is used. A minimum thickness of 40 mil (0.040") of Liquid Boot spray applied layer is recommended if the VI-20 base layer is used.
Sampled every 1000 sq.ft @ 11:00 4-20-16
Lay base layer of VI-20 and spray liquid
boot on 4-19-16 G-45 Yes Yes G-45 0.0773 Pass Yes Pass Sampled every 1000 sq.ft @ 11:00 4-
20-16
lay base layer of VI-20 and spray liquid boot on 4-19-16 6-44 Yes Yes 6-44 0.0737 Pass Yes Pass
95.8
73.7
77.3
Pass Yes Pass Sampled every 1000 sq.ft @ 11:00 4-20-16
Lay base layer of VI-20 and spray liquid boot on 4-19-16 G-43 Yes Yes G-43 0.0958
Lay base layer of VI-20 and spray liquid boot on 4-19-16 G-42 Yes Yes G-42 0.0863
Pass Yes Pass Sampled every 1000 sq.ft @ 11:00 4-20-16
86.3
Matthew Brundage 4/20/2016
Clear light winds
Activity
Measured Thickness Base and CoreLayers' (inches)
Vapor Mitigation System Inspection Log
Residences at Gateway Villiage
Charlotte, North Carolina
S&ME Project No. 4335-14-267 Ph. 05
Inspector (s): Name (s):Date:
Weather:
Temperature:70's
Location
Base Layer
Observation?
GenerallyInstalled PerSpecifications?Sample ID
Average
Thickness
(inches)
Average
Thickness
(mils)Pass/Fall²
Smoke
Testing
Conducted?
Smoke Testing
Pass?Comments
A 0.0490
B 0.0450
C 0.0510
A 0.0665
B 0.0655
C 0.0635
A 0.0695
B 0.0675
C 0.0655
A 0-0665
B 0.0675
C 0.0645
A 0-0745
B 0.0730
C 0.0640
Notes:
1 Thickness measured with pre-calibrated calipers.
2 Thickness measurement required to be a minimum of 60 mil (0.060") for Liquid Boot spray applied layer if T-40 or T-60 base fabric is used. A minimum thickness of 40 mil (0.040") of Liquid Boot spray applied layer is recommended if the VI-20 base layer is used.
Sampled every 1000 sq.ft @ 1300 5-18-16Lay base layer of VI-20 and spray liquid boot on 5-18-16 G-50 Yes Yes G-50 0.0705 Pass Yes Pass70.5
Sampled every 1000 sq.ft @ 1300 5-18-16
Lay base layer of VI-20 and spray liquid
boot on 5-18-16 G-49 Yes Yes G-49 0.0662 Pass Yes Pass Sampled every 1000 sq.ft @ 1300 5-
18-16
Lay base layer of VI-20 and spray liquid boot on 5-18-16 G-48 Yes Yes G-48 0.0675 Pass Yes Pass67.5
66.2
Pass Yes Pass Sampled every 1000 sq.ft @ 1300 5-18-16
Lay base layer of VI-20 and spray liquid boot on 5-18-16 G-47 Yes Yes 0-47 0.0652
Lay base layer of VI-20 and spray liquid boot on 5-18-16 G-46 Yes Yes 6-46 0.0483
Pass Yes Pass Sampled every 1000 sq.ft @ 1300 5-18-16
48.3
65.2
Brian Wilson 5/18/2016
Overcast
Activity
Measured Thickness Base and CoreLayers' (inches)
Vapor Mitigation System Inspection Log
Residences at Gateway Villiage
Charlotte, North Carolina
S&ME Project No. 4335-14-267 Ph. 05
Inspector (s): Name (s):Date:
Weather:
Temperature:60's
Location
Base Layer
Observation?
GenerallyInstalled PerSpecifications?Sample ID
Average
Thickness
(inches)
Average
Thickness
(mils)Pass/Fall²
Smoke
Testing
Conducted?
Smoke Testing
Pass?Comments
A 0.0460
B 0.0430
C 0.0590
A 0.0635
B 0.0670
C 0.0650
A 0.0620
B 0.0710
C 0.0715
A 0.0570
B 0.0580
C 0.0615
A 0.0480
B 0.0550
C 0.0485
A 0.0785
B 0.0750
C 0.0715
A 0.0585
B 0.0740
C 0.0600
A 0.0795
B 0.0730
C 0.0570
A 0.0565
B 0.0610
C 0.0650
A 0.0460
B 0.0475
C 0.0495
Notes:
Sampled every 1000 sq.ft. 5-23-16 Smoke Test done on 5-24-16
1 Thickness measured with pre-calibrated calipers.
2 Thickness measurement required to be a minimum of 60 mil (0.060") for Liquid Boot spray applied layer if T-40 or T-60 base fabric is used. A minimum thickness of 40 mil (0.040") of Liquid Boot spray applied layer is recommended if the VI-20 base layer is used.
Pass Yes Pass Sampled every 1000 sq.ft. 5-23-16 Smoke Test done on 5-24-16
Coupon Sampling G-60 Yes Yes G-60 0.0477
Coupon Sampling G-59 Yes Yes G-59 0.0608
Pass Yes Pass
60.8
47.7
Sampled every 1000 sq.ft. 5-23-16 Smoke Test done on 5-24-16
Coupon Sampling G-58 Yes Yes G-58 0.0698 Pass Yes Pass Sampled every 1000 sq.ft. 5-23-16
Smoke Test done on 5-24-16
Coupon Sampling G-57 Yes Yes G-57 0.0642 Pass Yes Pass64.2
69.8
Sampled every 1000 sq.ft 5-23-16
Coupon Samples and Smoke Test G-56 Yes Yes G-56 0.0750 Pass Yes Pass Sampled every 1000 sq.ft 5-23-16
Coupon Samples and Smoke Test G-55 Yes Yes G-55 0.0505 Pass Yes Pass50.5
75.0
Sampled every 1000 sq.ft 5-23-16
Coupon Samples and Smoke Test G-54 Yes Yes G-54 0.0588 Pass Yes Pass Sampled every 1000 sq.ft 5-23-16
Coupon Samples and Smoke Test G-53 Yes Yes G-53 0.0682 Pass Yes Pass68.2
58.8
Pass Yes Pass Sampled every 1000 sq.ft 5-23-16
Coupon Samples and Smoke Test G-52 Yes Yes G-52 0.0652
Coupon Samples and Smoke Test G-51 Yes Yes G-51 0.0493
Pass Yes Pass Sampled every 1000 sq.ft 5-23-16
49.3
65.2
Brian Wilson 5/23/2016
Sunny
Activity
Measured Thickness Base and CoreLayers' (inches)
Vapor Mitigation System Inspection Log
Residences at Gateway Villiage
Charlotte, North Carolina
S&ME Project No. 4335-14-267 Ph. 05
Inspector (s): Name (s):Date:
Weather:
Temperature:80's
Location
Base Layer
Observation?
GenerallyInstalled PerSpecifications?Sample ID
Average
Thickness
(inches)
Average
Thickness
(mils)Pass/Fall²
Smoke
Testing
Conducted?
Smoke Testing
Pass?Comments
A 0.0965
B 0.0960
C 0.0965
A 0.1360
B 0.1465
C 0.1390
A 0.0896
B 0.0780
C 0.8100
A 0.1085
B 0.1090
C 0.0995
Notes:
1 Thickness measured with pre-calibrated calipers.
2 Thickness measurement required to be a minimum of 60 mil (0.060") for Liquid Boot spray applied layer if T-40 or T-60 base fabric is used. A minimum thickness of 40 mil (0.040") of Liquid Boot spray applied layer is recommended if the VI-20 base layer is used.
Sampled every 1000 sq.ft @ 1400 7-7-16
Lay base layer of VI-20 and spray liquid
boot on 9-19-16 G-64 Yes Yes G-64 0.1090 Pass Yes Pass Sampled every 1000 sq.ft @ 1400 9-
20-16 @1030
Lay base layer of VI-20 and spray liquid boot on 7-7-16 G-63 Yes Yes G-63 0.0828 Pass Yes Pass82.8
109.0
Pass Yes Pass Sampled every 1000 sq.ft @ 1400 7-7-16
Lay base layer of VI-20 and spray liquid boot on 7-7-16 G-62 Yes Yes G-62 0.1405
Lay base layer of VI-20 and spray liquidboot on 7-7-16 0-61 Yes Yes 0-61 0.0963
Pass Yes Pass Sampled every 1000 sq.ft @ 1400 7-7-16
96.3
140.5
Matthew Brundage 7/7/2016
Clear
Activity
Measured Thickness Base and CoreLayers' (inches)
Vapor Mitigation System Inspection Log
Residences at Gateway Villiage
Charlotte, North Carolina
S&ME Project No. 4335-14-267 Ph. 05
APARTMENTS
OFFICEBUILDING
GREENWAYW TRADE ST NIRWINAVW 5TH ST
NSYCAMORESTG-03G-04G-02 G-01
G-05
G-09
G-06
G-10G-11
G-13
G-12
G-07G-08
G-14
G-15
G-16
G-17
G-18G-19
G-20
G-21
G-22
G-25
G-26
G-27G-28G-29G-30G-31G-32G-33
G-34
G-35
G-36
G-37
G-38 G-39 G-40 G-41 G-51 G-52 G-53 G-54 G-55 G-56
G-60G-57
G-58
G-59
G-42 G-43 G-44 G-45 G-46
G-47
G-48
G-49
G-50
G-64
G-61
G-62
G-63
G-24
G-23
SAMPLE GRID LOCATIONSON HORIZONTAL SURFACESRESIDENCES AT GATEWAY VILLAGEWEST TRADE STREET AND NORTH SYCAMORE STREETCHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA--4335-14-267DDH10-20-2016FIGURE NO.SCALE:PROJECT NO.DATE:DRAWN BY:REFERENCE:FIRST FLOOR PLAN SHEET PROVIDED BY RULE JOY TRAMMELL RUBIO LLC AND DATED 2-19-2016. THISMAP IS FOR INFORMATIONAL PURPOSES ONLY. ALL FEATURE LOCATIONS DISPLAYED AREAPPROXIMATED. THEY ARE NOT BASED ON CIVIL SURVEY INFORMATION, UNLESS STATED OTHERWISE.³1 " = 50 'Q:\4335\14\267-West Trade Street Apartments\SampleMatrixSubSlab.mxd plotted by DHomans 10-20-2016SAMPLE GRID LOCATIONS 0 50 100
(IN FEET)
G-01
●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○●○APARTMENTS
OFFICEBUILDING82.659.659.838.439.85994
59
46
59.5
59.5
99.5
87.5
49
4
8.
5
8
9
.
5
9
9
.
59
9
.59
9
.589.544.553.543.54060
59.5
46.5 61.361.648.6144948.5
69.5
87.5
60
8
6
.
5
8
7
.
5
8
7
.
5 43.546.538.559.539.546.540
39.5
43.656.588.543.539.538.5
36.5
36.5
6060
87.559
BARRIER THICKNESSON VERTICAL SURFACESRESIDENCES AT GATEWAY VILLAGEWEST TRADE STREET AND NORTH SYCAMORE STREETCHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA--4335-14-267DDH10-20-2016FIGURE NO.SCALE:PROJECT NO.DATE:DRAWN BY:REFERENCE:PLAN DESIGNS PROVIDED BY RULE JOY TRAMMELL & RUBIO LLC AND DATED 4-6-2015. THIS MAP IS FORINFORMATIONAL PURPOSES ONLY. ALL FEATURE LOCATIONS DISPLAYED ARE APPROXIMATED. THEY ARENOT BASED ON CIVIL SURVEY INFORMATION, UNLESS STATED OTHERWISE.³1 " = 50 'Q:\4335\14\267-West Trade Street Apartments\VerticalBarrierThickness.mxd plotted by DHomans 10-20-2016BARRIER THICKNESSREADING:●○0'-12' ABOVE GROUND●○13'-24' ABOVE GROUND●○25'-36' ABOVE GROUND●○37'-60' ABOVE GROUND
Barrier thickness readings arecumulative averages presentedin mils (1/1000 inch)0 50 100
(IN FEET)
Appendix V - Photographs
Residences at Gateway – Vapor Mitigation Installation
Charlotte, NC
Project #: 4335-14-267, Phase 05
Sheet 1 of 12
Photo 1
Date: 3/22/16Photographer: B. WilsonLocation Residences at Gateway – building interior
Remarks Subgrade prior to installation of vapor barrier
Photo 2
Date: 3/22/16Photographer: B. WilsonLocation Residences at Gateway – building interior
Remarks Gravel and GEOVENTTM installation above subgrade
Residences at Gateway – Vapor Mitigation Installation
Charlotte, NC
Project #: 4335-14-267, Phase 05
Sheet 2 of 12
Photo 3
Date: 4/19/16 Photographer: M. Brundage Location Residences at Gateway – building interior
Remarks VI-20 installation above GEOVENTTM and gravel
GEOVENTTM
VI-20TM
Residences at Gateway – Vapor Mitigation Installation
Charlotte, NC
Project #: 4335-14-267, Phase 05
Sheet 3 of 12
Photo 4
Date: 3/22/16Photographer: B. WilsonLocation Residences at Gateway – Building interior
Remarks Installation of VI-20TM Geomembrane above GEOVENTTM
and gravel
VI-20™
Residences at Gateway – Vapor Mitigation Installation
Charlotte, NC
Project #: 4335-14-267, Phase 05
Sheet 4 of 12
Photo 5
Date: 3/19/16 Photographer: M. Brundage Location Residences at Gateway – Building interior
Remarks Another view of VI-20TM Geomembrane above GEOVENTTM
and gravel
VI-20
GEOVENTTV
Residences at Gateway – Vapor Mitigation Installation
Charlotte, NC
Project #: 4335-14-267, Phase 05
Sheet 5 of 12
Photo 6
Date: 9/19/16 Photographer: M. Brundage Location Residences at Gateway – Building interior
Remarks
Applying LIQUID BOOT® spray-on barrier horizontally above
VI-20 and vertically on interior wall with no barrier below
footing
Residences at Gateway – Vapor Mitigation Installation
Charlotte, NC
Project #: 4335-14-267, Phase 05
Sheet 6 of 12
Photo 7
Date: 3/22/16 Photographer: M. Brundage Location Residences at Gateway – Building interior
Remarks LIQUID BOOT® spray-on barrier after application and before
smoke testing
Photo 8
Date: 4/21/16 Photographer: M. Brundage Location Residences at Gateway – Building interior
Remarks Applying LIQUID BOOT® spray-on barrier on interior step-up
wall with no barrier below footing
Residences at Gateway – Vapor Mitigation Installation
Charlotte, NC
Project #: 4335-14-267, Phase 05
Sheet 7 of 12
Photo 9
Date: 4/29/16 Photographer: M. Brundage Location Residences at Gateway – Building interior
Remarks
LIQUID BOOT® applied on vertical wall separating
parking deck from residential area with no barrier
below footing. Looking at residential side of wall.
Photo 10
Date: 4/29/16 Photographer: M. Brundage Location Residences at Gateway – Building interior
Remarks Measuring depth (thickness) of spray-applied LIQUID BOOT®
barrier on vertical wall using calibrated calipers
Residences at Gateway – Vapor Mitigation Installation
Charlotte, NC
Project #: 4335-14-267, Phase 05
Sheet 8 of 12
Photo 11
` Date: 3/24/16 Photographer: M. Brundage Location Residences at Gateway – Building interior
Remarks Smoke testing by injecting smoke below vapor barrier after
collection of “coupon” samples to verify thickness
Photo 12
Date: 3/23/16 Photographer: M. Brundage Location Residences at Gateway – Building interior
Remarks Smoke testing of barrier with leaks indicated, prior to repairs
and application of ULTRASHIELDTM protective surface layer
Leak
Leak
Residences at Gateway – Vapor Mitigation Installation
Charlotte, NC
Project #: 4335-14-267, Phase 05
Sheet 9 of 12
Photo 13
Date: 4/26/16Photographer: M. BrundageLocation Residences at Gateway – Building interior
Remarks Protective wall board installed over spray-applied barrier on
vertical interior wall with sealed connections
Residences at Gateway – Vapor Mitigation Installation
Charlotte, NC
Project #: 4335-14-267, Phase 05
Sheet 10 of 12
Photo 14
Date: 9/22/16Photographer: M. BrundageLocation Residences at Gateway – Building interior
Remarks Elevator pit area with barrier and protective wall board
installed
Residences at Gateway – Vapor Mitigation Installation
Charlotte, NC
Project #: 4335-14-267, Phase 05
Sheet 11 of 12
Photo 15
Date: 3/26/19 Photographer: M. Brundage Location Residences at Gateway – Building interior
Remarks ULTRASHIELDTM protective surface cover applied to barrier,
rebar placed and ready for concrete pour for slab
Photo 16
Date: 9/19/16 Photographer: M. Brundage Location Residences at Gateway – Building interior
Remarks Connection of GEOVENTTM below slab to vertical vent riser
Residences at Gateway – Vapor Mitigation Installation
Charlotte, NC
Project #: 4335-14-267, Phase 05
Sheet 12 of 12
Photo 17
Date: 9/19/16 Photographer: M. Brundage Location Residences at Gateway – Building Roof
Remarks Vertical vent riser extending above roof line prior to
completion