17038_Goodyear_JW Mariott Hotel - VMS Closeout Report

604 North 14th Street
Fernandina Beach, FL 32034
Office: [phone]
Fax: [phone]
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Attachment 1
JW Marriott Hotel - VMS QA.QC Certification
604 North 14th Street
Fernandina Beach, FL 32034
Office: [phone]
Fax: [phone]
www.eaienviro.com

March 25, 2021

Chris Orrell
ECS Southeast, LLP
4811 Koger Boulevard
Greensboro, NC 27407

Tel: [phone]
Cell: [phone]
Email: [e-mail]

Re: #S19008 JW Marriott Hotel – Vapor Mitigation System QA/QC for JW Marriott Hotel located in
Charlotte, NC

Dear Mr. Orrell,

EAI Inc was contracted by the General Contractor DPR Construction to install the Vapor Intrusion Mitigation
System at the above referenced project. The installation proceeded in strict accordance with “Vapor
Mitigation System” dated 7/2/2019 for JW Marriott and “Vapor Intrusion Mitigation System” Issued for
NCDEQ Approval dated 08/26/19 for Former Goodyear Service Center (Attachment A). VMS system was
installed per specifications as shown on as-builts (Attachment D). All inspections were performed by qualified
personnel acting under my supervision. Below is a summary of inspections performed.

Date Inspection Scope
09/16/2019 Sub-Slab Depressurization System Secion 1
09/17/2019 Vapor Barrier System Section 1
01/06/2020 Sub-Slab Depressurization System Secion 2
01/09/2020 Vapor Barrier System Section 2
02/13/2020 Sub-Slab Depressurization System Secion 3
02/17/2020 Vapor Barrier System Section 3
02/24/2020 Sub-Slab Depressurization System Secion 4
02/27/2020 Vapor Barrier System Section 4

Attachment A: Approved Project Design Plans and Specifications
Attachment B: Sub-slab venting system Inspection Reports with Photos
Attachment C: Smoke Test Logs
Attachment D: As-Builts

604 North 14th Street
Fernandina Beach, FL 32034
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Fax: [phone]
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Attachment A
Approved Design Plans and Specifications

604 North 14th Street
Fernandina Beach, FL 32034
Office: [phone]
Fax: [phone]
www.eaienviro.com

Attachment B
SSDS Inspection Reports

604 North 14th Street
Fernandina Beach, FL 32034
Office: [phone]
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Attachment C
Smoke Test Logs

604 North 14th Street
Fernandina Beach, FL 32034
Office: [phone]
Fax: [phone]
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Attachment D
As-Builts
604 North 14th Street
Fernandina Beach, FL 32034
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Attachment 2
JW Marriott Influence Testing Report
604 North 14th Street
Fernandina Beach, FL 32034
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Fax: [phone]
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Page 1 of 5

May 25, 2021

Chris Orrell, P.G.
ECS Southeast, LLP
1812 Center Park Drive, Suite D
Charlotte, NC 28217
Tel: [phone]
Email: [e-mail]

Re: VMS Influence Pilot Testing
JW Marriott
Charlotte, NC

Dear Mr. Orrell,

ECS Southeast, LLP requested EAI South to perform VMS influence pilot testing to evaluate the current
performance and functionality of the sub-slab depressurization system at the above-referenced site. Andrew
Deonas from EAI South completed the communication test at the site on April 26th, 2021. A representative
from ECS was also present as a third-party witness. Please find below a summary of the testing investigation
and recommendations.

Equipment/Tools:

The blower used in the influence testing at this location is the RP265 Radon Fan Pro Series from RadonAway.
The RP265 is an energy-efficient blower that can achieve an airflow of 375 cubic feet per minute (cfm) at a
pressure of 0” WC. The micromanometer used was the VelociCalc Multi-Function Ventilaton Meter 9565 from
TSI. Other blower package accessories, such as transition couplings and fittings, were used as well. Photos of
equipment used are included below.

Test Method:

Testing began with recording of the project, date, weather conditions, and the SSDS area to be monitored.
The EAI representative then located the two risers at roof level, Riser 1 and Riser 2. An electric power supply
was then run to each riser and a baseline reading was recorded. To obtain the baseline reading, the
micromanometer was zeroed at each monitoring point’s P1 port. Three tests were run to obtain a vacuum
response reading at each monitoring point. The first test measured vacuum response when the blower at each
riser was turned on, while the second and third tests measured vacuum response when one blower was turned
on and the other was turned off with the corresponding riser ball valve turned off as well. Each of the three
tests were run for each of the 10 monitoring points. To perform the tests, blowers were hooked up with a PVC
spacer at a hole about 1’ down from the fan at each riser. The micromanometer was zeroed and vacuum in
inches water (in. WC) and velocity in meters per second (m/s) were measured with the blower fans running
for each individual test. Following this, vacuum response readings for each individual monitoring point were
recorded with both blower fans running. This process was repeated for each monitoring point for the second
test with the Riser 1 blower turned on and the Riser 2 blower turned off. This process was repeated for a
third time for each monitoring point for the third test with the Riser 1 blower turned off and the Riser 2
blower turned on.

604 North 14th Street
Fernandina Beach, FL 32034
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Page 2 of 5

Fig. 1 – Image of riser penetration at roof with blower fan attached
604 North 14th Street
Fernandina Beach, FL 32034
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Page 3 of 5

Fig. 2 – Image of vacuum testing with micromanometer with blower fan and transition coupling in background

604 North 14th Street
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Page 4 of 5

Fig. 3 – Close-up image of micromanometer screen readout during testing

604 North 14th Street
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Page 5 of 5

Sub-Slab Depressurization System Communication Test Results:

Riser 1:
- Vacuum at Extraction Point: 2.16” WC
- Air Velocity at Extraction Point: 0.72 m/s

Riser 2:
- Vacuum at Extraction Point: 1.92” WC
- Air Velocity at Extraction Point: 69 m/s

Monitoring Point (MP) Vacuum Baseline/Response:

MP ID
Number
Existing Wind
Turbine MP
Vacuum Baseline
(in. WC)
Riser 1 & 2 MP
Vacuum Baseline
(Both Blowers On)
(in. WC)
Riser 1 MP Vacuum
Response (Riser 2 Blower
Off and Corresponding
Ball Valve Off) (in. WC)
Riser 2 MP Vacuum
Response (Riser 1 Blower
Off and Corresponding
Ball Valve Off) (in. WC)
1 0.000 0.015 0.000 0.012
2 0.000 0.011 0.002 0.013
3 0.000 0.008 0.004 0.005
4 0.000 0.009 0.009 0.007
5 0.000 0.021 0.020 0.004
6 0.000 0.009 0.015 0.006
7 0.000 0.017 0.019 0.011
8 0.000 0.009 0.017 0.002
9 0.000 0.31 0.027 0.002
10 0.000 0.041 0.039 0.001

Conclusion:

Influence testing was performed on April 26th, 2021. The weather at the time of testing was clear and 74°F
with little to no wind. Passive system baseline readings at all 10 monitoring point locations with the existing
wind turbines attached to Riser 1 and Riser 2 were read and recorded as 0.000” WC. “Riser 1 & 2 MP
Vacuum Baseline” data shows the vacuum response with blowers at Riser 1 and Riser 2 turned on. “Riser 1 MP
Vacuum Response” shows the vacuum response at the monitoring point locations with only the Riser 1 blower
activated, and “Riser 2 MP Vacuum Response” shows the vacuum response at the monitoring point locations
with only the Riser 2 blower activated. Thus, data shown in this report reflect active system measurements.

The data recorded by the field technician also reflects the need for 2 blowers if the need arises to cover the
entire sub-slab building footprint. In the third test, when only the Riser 2 blower was activated, the MP-1
location gave a vacuum response of 0.000” WC. This means that Riser 2 will has no influence on monitoring
point at this location due to the distance from Riser 2 to MP-1.

Based on these findings, the system functions as designed with complete influence underground.

604 North 14th Street
Fernandina Beach, FL 32034
Office: [phone]
Fax: [phone]
www.eaienviro.com

Attachment 3
CETCO Certified Installer’s Qualification
Colloid Environmental Technologies Company
2870 Forbs Ave
Hoffman Estates, IL 60192, USA
Phone: [phone]

Zarah Thanasides, PE
EAI South
604 North 14th Street
Fernandina Beach, FL 32034

RE: Liquid Boot Applicator Certification

Dear Zarah,

I am writing this letter to confirm that as of the date of this letter the EAI South certification as an approved Liquid Boot Vapor
Barrier System installer is up to date and in-force.

If you have any additional questions please do not hesitate to call me at the number listed below.

Sincerely,

Alex Everhart
Technical Sales Manager
CETCO® Environmental Products
01/30/18