23076_RalMGP2II_VIMSDesignRev 1_20220207

Mid Atlantic
Engineering & Environmental Solutions
February 7, 2022
Sarah Hardison, Supervisor
NC Brownfields Program
NC Department of Environmental Quality
Division of Waste Management
Mail Service Center 1646
Raleigh, North Carolina 27699-1646
Subject: VAPOR INTRUSION MITIGATION SYSTEM DESIGN SUBMITTAL
FORMER RALEIGH MGP NO. 2
600 CABARRUS STREET
RALEIGH, NORTH CAROLINA
BROWNFIELDS PROJECT NO.: 13022-09-92
MID -ATLANTIC PE LICENSE: F-0967
REVISION NO.: 1
MID -ATLANTIC JOB NO. OOOR3746.00
Dear Ms. Hardison:
409 Rogers View Court
Raleigh, NC 27610
office 919.25a.9918
fa[sintile 919,250.9950
MAAONLINE.COM
On behalf of Cabarrus LLC, Mid -Atlantic Associates, Inc. (Mid -Atlantic) has prepared this
Design Submittal for a Vapor Intrusion Mitigation System (VIMS) associated with the
redevelopment project Former Raleigh MGP No. 2 located at 600 Cabarrus Street in
Raleigh, North Carolina. This Design Submittal is organized in general accordance with
Appendix H Brownfield Program Vapor Intrusion Mitigation System (VIMS) Design
Submittal New Construction Minimum Requirements Checklist (March 2018).
SECTION 1. INTRODUCTION
The subject site is comprised of three parcels totaling 5.91 acres and situated northwest of
the intersection of South West Street and West Cabarrus Street (600 Cabarrus Street) in
Raleigh, North Carolina. In 2011, a Brownfields Agreement was completed for a 4.08-acre
portion of the subject site. The Department of Environmental Quality (DEQ) has
determined that the remaining 1.83 acres associated with the subject site can participate in
the Brownfields Program. The process of consolidating the entire 5.91 acres into a new
comprehensive Brownfields Agreement is underway.
EXPERIENCED CUSTOMER FOCUSED INNOVATIVE —

VIMS Design Submittal February 7, 2022
Former Raleigh MGP No. 2 Page 2
Raleigh, North Carolina
The subject site has been used for various industrial purposes, including a manufactured
gas plant, since the late 1800s. Environmental assessment activities conducted have
identified the presence of volatile organic compounds (VOCs) in the soil and groundwater
at the site. Both chlorinated and petroleum -related VOCs have been identified in the
groundwater at the site.
Although sub -slab soil gas assessment activities recently conducted at the Clancy Shop
and the Amtrak Building did not identify unacceptable risk, these buildings are not within
the footprint of the proposed new buildings. The presence and concentrations of the VOCs
detected in the groundwater beneath the proposed structures suggest that a vapor
encroachment condition exists at the site. Therefore, the PD has elected to include a
Vapor Intrusion Mitigation System (VIMS) into the redevelopment construction plan for the
subject site. The remainder of this document addresses the plan for implementation and
performance evaluation of the VIMS.
SECTION 2. DESIGN BASIS
The subject site will be redeveloped for mixed commercial/residential use. The new
development is seven stories and built around a courtyard with pedestrian entrances to the
courtyard from the west, east and south. The designers have divided the structure into
three buildings (A, B and C, Drawing 1). Building A is on the southern portion of the site. It
is divided by one of the courtyard entrances. This creates two areas of ground contact of
two nearly equal portions. These portions will be occupied on the ground floor by
commercial enterprises and building support facilities. The foundation of Building A is slab
on grade and residential use is planned for the floors above ground floor. Building B is
north of Building A and, on the ground floor, is separated from Building A by west and east
pedestrian entrances to the courtyard. Building B is u-shaped, wrapping around the
courtyard and its swimming pool. The slab -on -grade ground floor of Building B is occupied
by commercial enterprises to the west, recreational and fitness facilities to the north, and
offices to the east. The second floor and above of Building B is residential use and
connects to Buildings A and C. Building C is the furthest building to the north. The ground
floor of Building C is slab -on -grade first floor parking with portions dedicated to apartment
building support facilities. Floors 2 through 7 of Building C are parking facilities in the
center surrounded by residential apartments around the perimeter of each floor. There are
no ground floor residential uses planned for the entire structure.
Attached Table 1 summarizes the proposed uses for each of the three buildings and
Drawing 1 illustrates the locations of the various use areas. The use of each section is
categorized as parking, transient occupancy, or commercial occupancy. The parking deck
for this project is seven stories and is open at ground level on the north and east sides.
The garage is mechanically vented with discharge at the top level of the parking deck. It is
considered an outdoor space. Thus, safeguards against vapor intrusion are not warranted
in this space. Transiently occupied spaces are spaces that tend to be occupied for brief
Mid Atlantic

VIMS Design Submittal
Former Raleigh MGP No. 2
Raleigh, North Carolina
February 7, 2022
Page 3
periods of time and/or on an infrequent basis. Unlike commercial spaces, transient spaces
are spaces unlikely to by occupied by the same person 8 hours per day, 5 days per week.
These spaces are enclosed, but often not conditioned (some communication and electrical
equipment may need to be protected from weather extremes). Due to the enclosed nature
of these spaces, vapor intrusion mitigation may be warranted. However, the low
occupancy time (usually less than 1 hour/day) associated with these spaces, suggest that
passive mitigation measures are sufficient. Table 1 includes a summary of the transiently
occupied space identified at the subject site. Commercial spaces are those that are likely
to be occupied for extended periods of time by the same individual. Therefore, for these
spaces, active VIMS is warranted. The spaces at the subject site that fit this category have
been summarized in Table 1 as well.
For transiently occupied spaces, vapor intrusion mitigation will be accomplished using a
chemical resistant barrier, VaporBlock 20 Plus, to interrupt contaminant migration
pathways into the building envelop. VaporBlock 20 Plus is designed specifically for vapor
intrusion mitigation and the manufacturer states that it is effective at retarding the migration
of BETX, PCE and TCE which are present at the site. The locations of the VaporBlock 20
Plus placement and site -specific construction details are included in Exhibit 1. The barrier
will be installed in place of typical moisture barrier in accordance with the manufacturer's
instructions (Exhibit 2). In these transient occupied spaces, the base course (typically
washed stone) is overlain with a taped -seam VaporBlock 20 Plus. The seams are to
overlap a minimum of 12 inches and penetrations (pipes, conduits, etc.) and columns are
sealed in accordance with manufacturer recommendations using manufacturer -approved
materials. The concrete floor will be poured over these layers. The VaporBlock 20 Plus
will be placed on vertical walls that are in contact with soil and along elevator pit side
walls that are in contact with soil. The vertical walls and the bottom of elevator pits
require waterproofing. On the vertical walls the waterproofing is applied to the wall
followed by the drainage board with the VaporBlock 20 Plus installed last.
In the commercial spaces (offices, retail spaces, recreation spaces) where longer
occupancy durations can be expected, the VaporBlock 20 Plus -based vapor intrusion
mitigation will be augmented with sub -slab soil gas depressurization (see Exhibit 1 for
details). For these areas, a 6" layer (minimum) of washed #57 stone that is overlain with
the taped -seam polyethylene vapor barrier (VaporBlock 20 Plus) will be placed to create
a soil gas plenum. The concrete floor will be poured over these layers.
Sub -slab depressurization will be accomplished using vapor pits. Each vapor pit is
exposed to the sub -slab plenum and fit with a pipe. The pipe is routed horizontally under
the slab to a convenient location where it turns vertical (riser) through the building to the
roof. Above roof level (outside the building envelop) a fan is placed on the pipe. The
operation of the fan (Exhibit 2) moves air from the sub -slab soil gas plenum and
discharges it to the atmosphere above the roof. This movement of air creates a zone of
low-pressure under the concrete floor of the building (sub -slab depressurization). The
Mid Atlantic

VIMS Design Submittal February 7, 2022
Former Raleigh MGP No. 2 Page 4
Raleigh, North Carolina
low-pressure zone interrupts the pathway of VOCs emanating from beneath the plenum
and prevents them from entering the building envelop.
The design of the depressurization system is based on the 2017 ANSI document Soil
Gas Control Systems in New Construction of Buildings (CC-1000 2017). Evaluation of
the building design indicated that five soil gas plenums would be required to address the
area targeted for active mitigation (sub -slab depressurization). The plenum locations are
illustrated in Drawing 2 and the characteristics of each plenum are summarized in
Table 2. The active mitigation portion of the southwest portion of Building A is
accomplished through a single plenum and two vapor pits/fans. The southeast portion
Building A targeted for active remediation will also use a single plenum and two vapor
pits/fans. As illustrated, three plenums are required to cover Building B. In Building B,
Plenum P-3 uses two vapor pits and fans while Plenums P-4 and P-5 each employ one
vapor pit/fan combination. Active mitigation is not required in Building C.
All piping will be 6-inch diameter. In accordance with CC-1000 2017, the discharge
points will be a minimum of 18 inches above the roof deck, a minimum of 30 feet from
air intakes and 10 feet from operational doors, windows, and hatches. The piping will
also be labeled on 10-foot intervals as shown in Exhibit 1.
The system will be operated to maintain approximately 4 Pascal or greater pressure
differential between the sub slab and the adjacent indoor space. The vacuum at each
plenum pipe near the fan will be monitored by a vacuum transducer (Exhibit 2). In the
event insufficient vacuum is identified by the transducer, a signal will be sent to a control
panel located in the Maintenance Office. Normal operation will be annunciated by a
green light and the fault condition (low vacuum) will be annunciated by a red light
(Exhibit 1).
The influence of the active VIMS beneath the slab will be evaluated by monitoring the
pressure differential at three sub -slab monitoring points in the floor of the southeast
Portion of Building A, three points in the southwest portion of Building A and 11 in
Building B. An additional monitoring point will be installed at eight locations which are
not within sub -slab depressurization zones. These eight locations include the Building A
southwest stair 1, Building A southwest stair 2, Building A southwest electrical room,
Building C lobby, Building C stair 3, the Building C resident trash room, Building C
maintenance office and Building C residential storage. The sub -slab monitoring points
are summarized in Table 3, the locations are illustrated in Drawing 3 and construction
details are included in Exhibit 1. The active VIMS will cover 37,500 ft2 and be
monitored by 17 points for an average monitoring point density of 2,200 ft2 per
monitoring point. The barrier -only VIMS covers approximately 9,100 ft2 and is monitored
by 11 points for a monitoring density of approximately 825 ft2 per point.
0 Mid Atlantic

VIMS Design Submittal February 7, 2022
Former Raleigh MGP No. 2 Page 5
Raleigh, North Carolina
SECTION 3. QUALITY ASSURANCE/QUALITY CONTROL
To satisfy Brownfield Program QA/QC requirements, it is imperative that the VIMS system
components be inspected by the Professional Engineer or his/her representative before
the components are covered by building materials. For the areas where depressurization
systems will be constructed, inspections will be conducted of the gravel layer, the vapor
collection pit and the sub -slab piping (perforated or solid) prior to placement of the
VaporBlock 20 Plus vapor barrier. For all areas with vapor mitigation infrastructure,
inspections will also be conducted after placement of the VaporBlock 20 Plus prior to
pouring the concrete floor. Since multiple penetration utility banks are common leak
locations, each penetration bank must be inspected and a dedicated inspection entry log
developed. Inspections will be conducted under the supervision of a qualified
Environmental Professional and will be documented in writing and will include
photographic documentation. Modifications to the design required during construction will
be approved by the Professional Engineer and documented. Smoke testing will be used to
evaluate the integrity of the vapor barrier.
SECTION 4. POST-CONSTRUCTION/PRE-OCCUPATION SYSTEM
EFFECTIVENESS TESTING
A performance evaluation of the sub -slab depressurization system will be conducted after
the sub -slab components have been constructed and the overlying slabs poured. The
evaluation may be conducted prior to the vertical riser pipe installation. The evaluation will
be conducted using a temporary fan/vacuum to induce a flow and consequential
depressurization below the slab. Initial vacuum readings will be collected from the
appropriate monitoring points prior to activating the fan/vacuum. After activation of the
fan/vacuum additional readings will be collected. The difference in these readings before
and after fan activation will be used to gauge spatial influence of the depressurization
system. Multiple runs at different flow rates may be used during the performance
evaluation. The results of the performance evaluation will be documented and used to
support subsequent monitoring requirements and system operational parameters
(assuming operation of the sub -slab depressurization system is determined necessary).
Sub -slab soil gas samples will be collected from each of the 17 monitoring points located
in sub -slab depressurization areas. The samples will be collected after the
depressurization has been deactivated for a minimum of 48 hours. Sub -slab soil gas
samples will also be collected from the eight monitoring points located in non -
depressurized areas. Each soil gas sample (total of 25) and two duplicate samples will be
tested using the TO-15 compendium. If appropriate, sampling may be conducted in
phases with a duplicate sample collected during each phase.
Indoor air sampling will not be conducted contingent on the sub -slab test results. In the
event unacceptable risk is identified in the sub -slab soil gas testing, indoor air sampling
may be conducted at the corresponding location. The indoor air samples will be analyzed
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VIMS Design Submittal
Former Raleigh MGP No. 2
Raleigh, North Carolina
February 7, 2022
Page 6
for compounds detected in the corresponding sub -slab soil gas sample, nearby previous
groundwater samples, nearby previous soil samples as well as tetrachloroethene,
trichloroethene, 1,2-dichloroethene and vinyl chloride. The Brownfield Program will be
consulted prior to indoor air sampling to confirm the locations and quantity. All sampling
will be conducted in accordance with Division of Waste Management's Vapor Intrusion
Guidelines (March 2018).
Each sub slab soil gas sample will be collected using dedicated '/4-inch diameter Teflon°
tubing for the sample train construction. Prior to sampling, the soil vapor points will be
purged using a syringe to evacuate a minimum of three volumes of air from the full
sampling train. Leak checks will be performed by placing a shroud over the sampling
location and entire sampling train and saturating the air within the shroud with helium gas.
A helium gas detector will be used to determine the concentration of helium in the shroud.
The sampling point will then be purged into a Tedlar® bag, with the collected vapor
analyzed by the helium gas detector to confirm that the Tedlar® bag did not contain a
helium concentration greater than 10% of that detected in the shroud. During the purging
and leak check, a laboratory -supplied 1-Liter batch -certified Summa canister with
calibrated flow regulators set will be connected to the tubing at each sampling point using
a ferrule to form an air -tight seal and a four-way valve.
Following purging and a successful leak check, the canister's intake valve will be opened
to collect the sub -slab vapor sample. The duration of sampling will be approximately 10
minutes per sample based on the volume of the sample container at a flow rate of 100 ml
per minute. The sampler will record the serial numbers of the flow controller and summa
canisters, documenting the beginning and ending vacuum pressures and duration of the
sampling event on the cannister tag and in field notes. The flow choke will them be opened
and the sample will be collected at the proposed sample rate. Sampling will cease after the
planned 10-minute sampling period or when the flow choke reaches -5 inches of mercury.
The 25 soil gas samples plus two duplicate samples will be delivered, under proper chain -
of -custody, to an AIHA-LAP, LLC-certified laboratory for analysis by EPA Method TO-15.
The laboratory will be instructed to provide reporting limits below the NCDEQ Residential
Soil Gas Screening Levels. Estimated concentrations will be reported as "J" flags.
Laboratory Level II QA/QC will be provided.
If the sub -slab data indicate that operation of the sub -slab depressurization system is
necessary, the influence of the sub -slab depressurization systems located in portions of
Buildings A and B will be documented by measuring the pressure differential between the
eleven vapor monitoring points located in the soil gas plenum and the ambient air above
each soil gas plenum. Pressure differentials less than 4 Pascals will trigger system
adjustment to achieve this pressure differential goal.
The results of the sub -slab soil gas testing, indoor air testing (if necessary) and pressure
differential readings (if necessary) will be provided to the Brownfield Program prior to
occupancy of the building. In situations that are time critical, Brownfield Program may be
ft Mid Atlantic

VIMS Design Submittal February 7, 2022
Former Raleigh MGP No. 2 Page 7
Raleigh, North Carolina
able to review laboratory data to determine if occupancy is appropriate prior to the
completion of a formal report. The buildings cannot be occupied until the Brownfield
Program has provided written approval.
SECTION 5. POST -OCCUPANCY TESTING
Sub -slab soil gas sampling will continue on a semi-annual basis until written approval from
the Brownfield Program to cease or modify the sampling is issued. A minimum of two
sample events, which may include the pre -occupancy sampling, will be required before
adjustments to the sampling can be considered. Post occupancy sampling requirements
can be adjusted, with Brownfield Program approval, independently at different locations
within the site. Post -occupancy pressure differential measurements (if necessary) will be
collected at each vapor monitoring point where sub -slab depressurization is deployed (17
locations). These data will be collected quarterly for one year. If these data indicate
consistent satisfactory depressurization, a request to the Brownfield Program will be made
to reduce or terminate monitoring. Changes to the monitoring schedule require Brownfield
Program approval prior to being implemented.
Note that if evaluation of initial pre -occupancy sub -slab soil gas testing and evaluation
using the DMW Cumulative Risk Calculator shows no unacceptable risk, the active VIMS
will not be activated. A follow up sub-sab soil gas sampling event will be conducted
approximately six months after the initial sampling event. If evaluation of these data
confirms the initial acceptable risk results, operation of the active VIMS will not be
necessary.
SECTION 6. FUTURE TENANTS & BUILDING USES
All ground floor tenants will be required to submit construction plans to the Building
Maintenance department. Personnel in the Building Maintenance who operate the VIMS
will review the proposed construction plans to identify potential conflicts with the VIMS.
If conflicts are identified, alternative plans will be considered. If disruptions to the slab or
VIMS cannot be avoided, repairs/modifications to the slab or VIMS must be inspected
under the supervision of a qualified Environmental Professional. If slab disturbances
occur in occupied areas with elevated levels of sub -slab soil gas contaminants, indoor
air sampling may be required in the occupied space and possibly occupied adjacent
spaces (including above).
There are no ribbon slabs, build -to -suit or pour -back areas planned for this site.
If significant modifications of VIMS components or monitoring points is required during
construction or during subsequent occupancy, a VIMS Modification Proposal which will
include the reason for the proposed changes and illustrations of the proposed changes
will be submitted to the DEQ Brownfields Program for approval prior to implementing.
Mid Atlantic

VIMS Design Submittal
Former Raleigh MGP No. 2
Raleigh, North Carolina
SECTION T. REPORTING
February i, 2022
Page 8
The results of the inspections described in Section 3 and the pre -occupancy testing
described in Section 4 will be compiled into a written report sealed by a North Carolina
Professional Engineer. This document will include a summary of inspections (including
field notes and photographic documentation), laboratory analytical data, pressure
differential data, data interpretation, as -built drawings, and a determination as to
whether the VIMS meets design objective of being fully protective of public health from
potential vapor intrusion impacts. Written approval from the Brownfield Program must
be issued prior to occupancy of the buildings and the approval included in the final
report.
The report will include a discussion of deviations (if any) from the approved VIMS Plan.
Deviations will be evaluated by the Brownfield Program and may trigger additional
indoor air sampling before or after building occupancy.
SECTION 8. DESIGN SUBMITTAL EXHIBITS
The VIMS design is provided as Exhibit 1. Equipment and materials information for the
vapor barrier, fans, vacuum transducer and other items are included as Exhibit 2.
CLOSING
We appreciate the opportunity to submit this VIMS Design Submittal. Should you have any
questions please do not hesitate to reach us at 919-250-9918.
Sincerely,
MID -A'
1XSSIr`� 'r.
TES, INC.
&Z", r_ - �__
Dab! i�lsen;`P`"` Darin M. McClure, PE
Prinpa �t �',_ Principal Engineer
Attachments: Wig i •
Tables
Exhibit 1 - VIMS Design
Exhibit 2 - Material/Equipment Information
U Mid Atlantic

DRAWINGS
Ift Mid Atlantic

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TABLES
Ift Mid Atlantic

TABLE 1
GROUND CONTACT SPACE SUMMARY
FORMER RALEIGH MGP NO. 2
600 CABARRUS STREET
RALEIGH, NORTH CAROLINA
BROWNFIELD PROJECT NO. 13022-09-92
MID -ATLANTIC JOB NO. OOOR3746.00
Approximate
Floor
Residential
VIMS
Location
s
Area (ft)
Elevation
Space Type
Above?
Type
(ft)
Building A -Southeast Section
Commercial tenant
8400
290
Commercial
Yes
Active
Stair 1
200
290
Transient
Yes
Passive
Building A -Southwest Section
Commercial tenant
7900
290
Commercial
Yes
Active
Stair 2
200
290
Transient
Yes
Passive
Commercial trash
600
285
Transient
Yes
Passive
Main electrical
400
285
Transient
Yes
Passive
Electrical vault
1000
285
Transient
Yes
Passive
Building B
Domestic pump room,
200
291
Transient
Yes
Passive
elevators 1 & 2
Lobby, fitness, training,
Commercial
restrooms, club, TV lounge,
7000
291
&Transient
Yes
Active
mail room, package room
Elevators 3 & 4
200
291
Transient
Yes
Passive
Offices, meeting, leasing,
3600
291
Commercial
Yes
Active
coworking,hone room
West side commercial,
residential move -in,
10,900
291
Commercial
Yes
Active
.workshop
Building C
Parking
46,300
291
Outdoor
No
None
Resident storage, long term
3000
291
Transient
Yes
Passive
bike storage, hall, stair 4
Maintenance office
800
291
Commercial
Yes
Passive
Electrical room, MDF
150
291
Transient
Yes
Passive
Fire protection pump room,
700
291
Transient
Yes
Passive
resident trash, riser room
Pool equipment room,
chemical room, stair 3,
1600
291
Transient
Yes
Passive
storage, elevator 5, parking
lobby

TABLE 2
SUB -SLAB DEPRESSURIZATION PLENUMS
FORMER RALEIGH MGP NO. 2
600 CABARRUS STREET
RALEIGH, NORTH CAROLINA
BROWNFIELD PROJECT NO. 13022-09-92
MID -ATLANTIC JOB NO. OOOR3746.00
Plenum
Pipe
Equivalent
Location
Plenum
Vapor
Monitoring
Diameter
Pipe Run
Fan Type
ID
(2)*
Pits
Points
onts
(in)
(ft)**
Building A - Southeast Section
Commercial tenant
P-1
8600
2
3
6
200/210
Rn 4EC-4
Building A -Southwest Section
Commercial tenant
P-2
8300
2
3
6
230/250
Rn 4EC-4
Building B
West side commercial,
move in, workshop
P-3
10,900
2
6
6
110/140
Rn 4EC-4
Lobby, fitness, restrooms,
P-4
4800
1
3
6
120
Rn 4EC-4
club, TV lounge
Lounge, mail room,
package room offices,
meeting, leasing, phone,
P-5
4900
1
2
6
130
Rn 4EC-4
coworking
*Maximum ANSI CC-1000 2017 recommended plenum area with inspected plenums and 6 inch duct is 14,000 ftz
**Maximum ANSI CC-1000 2017 recommended pipe run for 6 inch duct is 440 equivalent feet

TABLE 3
SUB -SLAB MONITORING POINTS
FORMER RALEIGH MGP NO. 2
600 CABARRUS STREET
RALEIGH, NORTH CAROLINA
BROWNFIELD PROJECT NO. 13022-09-92
MID -ATLANTIC JOB NO. OOOR3746.00
Location
Monitoring
Point ID
Depressurization
Area?
Building A - Southeast Section
Commercial tenant
MP-1
Y
Commercial tenant
MP-2
Y
Commercial tenant
MP-3
Y
Stair 1
MP-4
N
Building A -Southwest Section
Commercial tenant
MP-5
Y
Commercial tenant
MP-6
Y
Commercial tenant
MP-7
Y
Stair 2
MP-8
N
Electrical room
MP-9
N
Building B
Commercial tenant
MP-10
Y
Commercial tenant
MP-11
Y
Commercial tenant
MP-12
Y
Commecial tenant
MP-13
Y
Commercial tenant
MP-14
Y
Move -in Area
MP-15
Y
Fitness
MP-16
Y
Fitness
MP-17
Y
TV Lounge
MP-18
Y
Mail room
MP-19
Y
Co -working
MP-20
Y
Building C
Lobby MP-21
N
Stair 3
M P-22
N
Resident Trash
MP-23
N
Maintenance Office
MP-24
N
Residential Storage
MP-25
N

EXHIBIT 1
VIMS DESIGN
ft Mid Atlantic

VAPOR INTRUSION MITIGATION SYSTEM (VIMS)
CABARRUS, I.I.C.
FORMER RALEIGH MGP NO. 2
600 CABARRUS STREET
RALEIGH, NORTH CAROLINA
SHEET NUMBER
DESCRIPTION
VIMS1.01
COVER SHEET
VIMS1.02
GENERAL NOTES
VIMS1.03
VAPOR INTRUSION MITIGATION SYSTEM — GROUND
FLOOR LOCATIONS
VIMS1.04
VAPOR
INTRUSION MITIGATION SYSTEM —
BUILDING A
VIMS1.05
VAPOR
INTRUSION MITIGATION SYSTEM —
BUILDING B
VIMS1.06
VAPOR
INTRUSION MITIGATION SYSTEM —
BUILDING C
VIMS1.07
VAPOR
INTRUSION MITIGATION SYSTEM —
ROOF PLAN
VIMS1.08
VAPORBLOCK PLUS 20 — DETAILS
VIMS1.09
SUB —SLAB
DEPRESSURIZATION SYSTEM
— DETAILS
VIMS1.10
SUB —SLAB
DEPRESSURIZATION SYSTEM
— DETAILS
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GENERAL NOTES AND SPECIFICATIONS
1.0 Vapor Intrusion Mitigation System
1.1 Overview
Soil and groundwater at the subject site are known to contain dissolved volatile organic
compounds (VOCs). It is possible that vapors emanating from the soil and groundwater could
cause a vapor intrusion condition in buildings constructed on the subject site. To prevent vapor
intrusion conditions in the buildings on the subject site, a Vapor Intrusion Mitigation System
(VIMS) is required. The VIMS is comprised of two key components in addition to the conventional
poured concrete floor: 1) a membrane vapor intrusion barrier and 2) a sub -slab depressurization
system. The membrane barrier is to be placed under ground floor "transiently occupied" spaces
to passively inhibit the migration of vapors into the building. These include stairwells (4),
elevators (5), storage areas (3), electrical rooms (3) trash rooms (2), pool equipment/storage
rooms (2), riser/pump/fire protection rooms (3), maintenance office (1), parking lobby (1) and
hallway (1). The membrane barrier is not required in the areas that will be used for parking on
the ground level parking deck (the parking area is considered an outdoor space).
The sub -slab depressurization system (active vapor mitigation) will be used, in addition to the
membrane barrier, under both portions of Building A (except stairwells, trash room and electrical
rooms) and the majority of Building B. The sub -slab depressurization system is designed to
induce a negative pressure beneath the building foundation slab using roof -mounted electrical
fans.
1.2 Vapor Intrusion Membrane Barrier
The vapor intrusion membrane barrier is to be constructed using VaporBlock® Plus 20
manufactured by Raven Industries. For the membrane barrier to be effective, it must be installed
in accordance with the manufacturer's recommendations. The vapor intrusion barrier is to be
tested and demonstrated `tight' prior to pouring foundation slabs.
1.3 Concrete Floor Slab
The concrete floor slabs integral to the construction of the building are also an integral part of
the VIMS. The design of the slabs does not require modification. However, sealing of
discontinuities, joints and penetrations is required for proper operation of both passive and active
VIMS.
1.4 Sub -slab Depressurization System
The sub -slab depressurization system is primarily site built. It consists of a layer of washed stone
located beneath the membrane barrier and poured concrete floor, a site -built suction point (vapor
pit), piping from the vapor pit to the roof and a ventilation fan. The vapor pit is constructed using
hollow concrete blocks and galvanized composite decking located beneath the membrane
barrier and poured concrete floor. The design calls for six of these vapor pits, with six associated
fans. One pit/fan is located in each of the southeast and southwest sections of Building A. Both
fans are mounted on the roof. There are four pits/fans located in Building B all of which discharge
through roof -mounted fans.
1.5 Monitoring Systems
The monitoring system includes 25 sub -slab monitoring points. These monitoring points permit
measuring pressure differential across the floor slab as well as obtaining sub -slab soil gas
samples. These monitoring points are Vapor Pins® located inside Vapor Pin® Insets. The inserts
are placed in the floor prior to pouring the floor slabs.
Each vapor pit/fan combination is equipped with a pressure switch. The pressure switch monitors
the vacuum on the suction side of the fan. The pressure switch is linked to a control panel located
in the Maintenance Office. When the switch indicates vacuum, a green light is shown on the
control panel. When the switch does not sense vacuum, a red indicator light is illuminated.
1.6 Inspections and Testing
Inspections are to be conducted by an Environmental Professional. Inspections are required
when the gravel layer is placed, when each vapor pit has been constructed, when the membrane
barrier has been placed and upon initial operation of the ventilation fan. Membrane barrier
integrity testing is required.
1.7 Work Scope Outline
Construction activities will include:
• Placing a washed stone gravel layer on sub -grade below slab -on -grade concrete floors
• Constructing vapor pits in the gravel layer using concrete block set on side and covered
with galvanized decking
• Placing piping horizontally beneath the floor slab and vertically (risers) from the vapor pits
through the roof to the discharge location
• Installing membrane barrier over the gravel layer and beneath the floor slab
• Sealing membrane barrier penetrations and conducting smoke testing to confirm seal
integrity
• Sealing concrete floor seams and penetrations
• Installing fans, including electrical power, and vacuum switches on each discharge point
• Providing control panel linked to vacuum switches to annunciate operational conditions
of each fan
• Install sub -slab monitoring points
2.0 General Conditions
A. Work is to be conducted by knowledgeable experienced contractors familiar with
applicable codes, standards and accepted industry practices.
B. Work is to follow all applicable federal, state and local building, fire, plumbing and
electrical codes.
C. Products used in the construction of the VIMS described here in must not contain
chlorinated solvents.
D. See structural and architectural drawings for dimensions and details associated with
building components.
3.0 VIMS System Components
3.1 Gravel Laver
A. Minimum 6-inch-thick No 57 washed stone in areas where sub -slab depressurization
system is to be used.
B. Gravel layer must be free of obstructions that would prevent the flow of air through the
gravel layer.
C. All non-VIMS utilities must be below the gravel layer.
3.2 Vapor Pits
A. Constructed of concrete block such that the holes in the block lie horizontally with the
gravel layer adjacent to the outside of the block holes and the void space of the pit
adjacent to the inside of the block holes (see detail).
B. Interior of the vapor pit is void space.
C. The bottom of the vapor pit is subgrade and the top is galvanized decking.
D. Slab -on -grade concrete floor is over the decking and there is no access to the vapor pit.
3.3 Horizontal Sub Grade Piping
A. Placed below slab, 6-inch diameter Schedule 40 PVC.
B. Placed with 1/8 inch fall per 12 inches of run to drain back to the vapor pit.
C. Placed from vapor pit to the location of the vertical turn up through the building.
3.4 Membrane Barrier
A. VaporBlock 20 to be placed in both "Barrier Only" (passive) and "Barrier and Sub -Slab
Depressurization" (active) areas shown in the drawings.
B. Installation of the VaporBlock 20 must be in accordance with manufacturer's instructions
and recommendations.
C. VaporBlock 20 must be sealed to foundations walls and columns in accordance with
manufacturer's instructions and using manufacturer -approved materials (tapes, mastic).
D. All utility penetrations must be sealed using boots and/or liquid seals in accordance with
manufacturers recommendations.
E. Barrier must be protected from damage during construction.
3.5 Risers
A. If permissible by code, risers can be constructed of Sch 40 PVC or CPVC. Code may
require cast iron.
B. Risers are 6-inch diameter and located as shown on the drawings.
C. Risers extend from the floor slab through the roof. All joints must be sealed airtight.
D. Risers will be supported in accordance with code, but at a minimum of every 10 feet.
E. If riser pipes have horizontal components, the horizontal runs will be supported in
accordance with code, but at a minimum of every 6 feet and will drain (1/8-inch fall to 12-
inch run) towards the vapor pit.
F. Risers are to carry a label every 10 feet stating, "Vapor Intrusion Mitigation System".
G. Refer to building plans for roof penetration details.
H. The discharge point must be:
• Vertical, with a'/2" mesh minimum rodent guard, rain caps are not permitted
• Not less than 10 feet above grade
• Not less than 10 feet from vertical walls unless extended a minimum of 0.5 feet above
wall height
• Not less than 10 feet from operable windows, doors or other building openings
• Not less than 30 feet from air intakes to the building
• Not less than 20 feet from patios, decks, sidewalks
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A. An in -line electrical fan designed for sub -slab depressurization and outdoor installation is
required at each discharge location. The specified fan is shown in the drawings.
B. Single phase 110 volt, 15 amp with a disconnect is required at each fan.
C. Fan locations are on the roof.
3.7 Fan Operation Monitors and Alarm
A. A pressure switch is located on the vacuum side of the riser just below each fan.
B. The pressure switch will continuously monitor the vacuum on the suction side of the riser.
C. The pressure switch is connected to a dedicated panel located in the Maintenance Office.
D. The control panels are to illuminate a green light if sufficient vacuum is present (>1.0 inch
water) or red if vacuum drops below 1.0 inch water.
3.8 Sub -Slab Monitoring Points
A. Monitoring points are constructed of stainless steel VaporPins® located in Vapor Pin
Inserts.
B. Vapor Pin Inserts to be set prior to pouring concrete floor slab at locations shown in
drawings.
C. Membrane barrier is to be sealed to the Vapor Pin Insert in accordance with
manufacturers specifications.
3.9 Concrete Floor Sealin
A. In areas were passive (membrane barrier only) or active (membrane barrier with sub -slab
depressurization) are located, the concrete floor is an integral part of the VIMS.
B. Sealing is required in the VIMS areas to prevent air/vapor leakage from the sub -slab into
the indoor space.
C. All discontinuities in the concrete floor in the VIMS areas are to be sealed with a concrete
compatible flexible sealant. This includes expansion joints, isolation joins, cracks, etc.
D. Wall -to -floor joints, column joints and utility penetrations in the VIMS areas are to be
sealed.
3.10 Inspections and Tests
A. Brownfield Program must be notified prior to conducting inspections; but inspections can
proceed without response to the notification.
B. The Environmental Professional, under the supervision of a Professional Engineer, must
inspect the gravel layer, vapor pits, sub -slab piping prior to placement of the membrane
barrier. No system components can be covered prior to inspection.
C. The contractor must conduct smoke tests in the presence of the Environmental
Professional in the VIMS area. These tests will be used to confirm the integrity of the
membrane barrier.
D. The Environmental Professional must inspect the concrete floor seals prior to installation
of floor coverings.
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Item #: 99923
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Required air flow
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Item name: Rn 4EC-4 Inline Radon Fan Product link: https://shop.fantech.net/en-US/productPermalink?p=3998921 Item #: 99923 Variant: 120V 1- 60Hz Document
Item name: Rn 4EC-4 Inline Radon Fan1 Product link: https://shop.fantech.net/en-US/productPermalink?p=399892 Item #: 99923 Variant: 120V 1- 60Hz Document
Item name: Rn 4EC-4 Inline Radon Fan Product link: https://shop.fantech.net/en-US/productPermalink?p=399892 Item #: 99923 Variant: 120V 1- 60Hz Document
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type: Product card I Created on: 2021-06-171 Generated by: Fantech Online
Catalogue I Language: English
type: Product card I Created on: 2021-06-171 Generated
by: Fantech Online Catalogue I Language: English
type: Product card I Created on: 2021-06-171 Generated by: Fantech Online Catalogue I Language: English
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Page 2 of 3
Page 3 of 3
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EXHIBIT 2
MATERIAL/EQUIPMENT INFORMATION
ft Mid Atlantic

VAPORBLOCKOPLU STM vsrzo
INDUSTRIES
Under -Slab Vapor / Gas Barrier
■
Product Description
VaporBlock® PIusTM 20 is a seven -layer co -extruded barrier made
from state-of-the-art polyethylene and EVOH resins to provide
unmatched impact strength as well as superior resistance to gas
and moisture transmission. VaporBlock° PIusTM 20 is a highly
resilient underslab / vertical wall barrier designed to restrict
naturally occurring gases such as radon and/or methane from
migrating through the ground and concrete slab. VaporBlock°
PIusTM 20 is more than 100 times less permeable than typical
high-performance polyethylene vapor retarders against Methane,
Radon and other harmful VOCs.
VaporBlock° PIusTM 20 is one of the most effective underslab
gas barriers in the building industry today far exceeding ASTM
E-1745 (Plastic Water Vapor Retarders Used in Contact with Soil or
Granular Fill Under Concrete Slabs) Class A, B and C requirements.
Available in a 20 (Class A) mil thicknesses designed to meet the
most stringent requirements. VaporBlock° PIusTM 20 is produced
within the strict guidelines of our ISO 9001:2008 Certified
Management System.
Product Use
VaporBlock° PIusTM 20 resists gas and moisture migration into the
building envelop when properly installed to provide protection
from toxic/harmful chemicals. It can be installed as part of a
passive or active control system extending across the entire
building including floors, walls and crawl spaces. When installed
as a passive system it is recommended to also include a ventilated
system with sump(s) that could be converted to an active control
system with properly designed ventilation fans.
VaporBlock° PIusTM 20 works to protect your flooring and
other moisture -sensitive furnishings in the building's interior
from moisture and water vapor migration, greatly reducing
condensation, mold and degradation.
Size & Packaging
VaporBlock° PIusTM 20 is available in 10' x 150' rolls to maximize
coverage. All rolls are folded on heavy-duty cores for ease in
handling and installation. Other custom sizes with factory welded
seams are available based on minimum volume requirements.
Installation instructions and ASTM E-1745 classifications
accompany each roll.
Under -Slab Vapor/Gas Retarder
Product Part #
VaporBlock Plus 20............................................................... VBP20
APPLICATIONS
Radon Barrier Under -Slab Vapor Retarder
Methane Barrier Foundation Wall Vapor Retarder
VOC Barrier
�� .7o B VAPOR Ick' Ru
0 2012 RAVEN INDUSTRIES INC. All rights reserved.

VAPORBLOCKO PLUS" vev20
Under -Slab Vapor / Gas Barrier
APPEARANCE White/Gold
THICKNESS, NOMINAL 20 mil 0.51 mm
WEIGHT 102 Ibs/MSF 498 g/m2
CLASSIFICATION ASTM E 1745 CLASS A, B & C
TENSILE STRENGTH ASTM E 154
LBF/IN (N/CM) Section 9 58 Ibf 102 N
AVERAGE MD & TO (NEW MATERIAL) (D-882)
IMPACT RESISTANCE ASTM D 1709 2600 g
MAXIMUM USE TEMPERATURE 1800 F 820 C
MINIMUM USE TEMPERATURE -70' F -57' C
ASTM E 154
PERMEANCE Section 7 0.0098 Perms 0.0064 Perms
(NEW MATERIAL) ASTM E 96 grain s/(ft2•hr•in•Hg) g/(24hr•m2•mm Hg)
Procedure B
(AFTER CONDITIONING)
ASTM E 154
PERMS
Section 8, E96
0.0079
0.0052
Section 11, E96
0.0079
0.0052
(SAME MEASUREMENT AS ABOVEPERMEAN(E)
Section 12, E96
0.0097
0.0064
Section 13, E96
0.0113
0.0074
ASTM E 96
0.0040
0.0028
WVTR
Procedure B
grains/hr-ft2
gm/hr-m2
RADON DIFFUSION COEFFIECIENT
K124/02/95
< 1.1 x 10-13
m2/S
< 1.7 x 10-11 m2/d• atm
METHANE PERMEANCE ASTM D 1434 0.32 GTR (Gas Transmission Rate)
ml/m2•D•ATM
VaporBlock® PIUST11 Placement
All instructions on architectural or structural drawings should be reviewed and followed.
Detailed installation instructions accompany each roll of VaporBlock® Plus' and can also be located on our website.
ASTM E-1643 also provides general installation information for vapor retarders.
VapN�r BDVAP�ET®/P�ll I�MGAS BARR
VaporBlock° Plus' is a seven -layer co -extruded barrier made using high
quality virgin -grade polyethylene and EVOH resins to provide unmatched
impact strength as well as superior resistance to gas and moisture
transmission.
Note: To the best of our knowledge, unless otherwise stated, these are typical property values and are intended as
guides only, not as specification limits. Chemical resistance, odor transmission, longevity as well as other performance
criteria is not implied or given and actual testing must be performed for applicability in specific applications and/or
conditions. RAVEN INDUSTRIES MAKES NO WARRANTIES AS TO THE FITNESS FOR A SPECIFIC USE OR
MERCHANTABILITY OF PRODUCTS REFERRED TO, no guarantee of satisfactory results from reliance upon
contained information or recommendations and disclaims all liability for resulting loss or damage. Limited Warranty
available at www.RavenEFD.com
Engineered Films Division Toll Free 800-635-3456
P.O. Box 5107 Email: [e-mail]
INDUSTRIES Sioux Falls, SD 57117-5107 www.ravenefd.com
Ph: [phone] • Fx: [phone] 1/11 EFD 1125
Scan QR Code to download
current technical data sheets
via the Raven website.

TM
\V7 0 CTtslo
LFU)PNOERSLAB VAPOR RETARDER f GAB BARRIER
Please Note: Read these instructions thoroughly before
installation to ensure proper use of VaporBlock®
PlusT". ASTM E 1465, ASTM E 2121 and, ASTM E
1643 also provide valuable information regarding the
installation of vapor / gas barriers. When installing this
product, contractors shall conform to all applicable
local, state and federal regulations and laws pertaining
to residential and commercial building construction.
u+arlre.n
• When VaporBlock® PIUSTM gas barrier is used
as part of an active control system for radon or#W"
other gas, a ventilation system will be required.
• If designed as a passive system, it is recommended
to install a ventilation system that could be
converted to an active system if needed.
Materials List:
VaporBlock® Plus'" Vapor / Gas Barrier
VaporSeall* 4" Seaming Tape
VaporSeall* 12" Seaming/Repair Tape
Butyl Seal 2-Sided Tape
VaporBoot Plus Pipe Boots 12/Box (recommended)
VaporBoot Tape (optional)
POUR-N-SEALT" (optional)
1" Foam Weather Stripping (optional)
Mako® Screed Supports (optional)
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Elements of a moisture/gas-resistant floor system. General illustration only
(Note: This example shows multiple options for waterstop placement.
1.1. Level and tamp or roll granular base as specified. A base for a gas -
reduction system may require a 4" to 6" gas permeable layer of clean
coarse aggregate as specified by your architectural or structural
drawings after installation of the recommended gas collection system.
In this situation, a cushion layer consisting of a non -woven geotextile
fabric placed directly under VaporBlock® PlusTM' will help protect the
barrier from damage due to possible sharp coarse aggregate.
1.2. Unroll VaporBlock® Plus'" running the longest dimension parallel with
the direction of the pour and pull open all folds to full width. (Fig. 1)
1.3. Lap VaporBlock® Plus'" over the footings and seal with Raven Butyl
Seal tape at the footing -wall connection. Prime concrete surfaces,
when necessary, and assure they are dry and clean prior to applying
Raven Butyl Seal Tape. Apply even and firm pressure with a rubber
roller. Overlap joints a minimum of 6" and seal overlap with 4"
VaporSeal" Tape. When used as a gas barrier, overlap joints a
minimum of 12" and seal in-between overlap with an optional 2-sided
Raven Butyl Seal Tape. Then seal with 4" VaporSealT" Tape centered on
the overlap seam. (Fig. 2)
Fig. 1: VaporBlock® Plus'" Overlapping Roll -out Method
VaporSeal-4"Tape Optional Butyl Seal VaporSealT"
2-Sided Tape 4"Tape
Vapor Riarder App ;,; ;''.'• "' Gas Barrier Applications
Fig. 2: VaporBlock® PlusTM' Overlap Joint Sealing Methods
FOf
Page 1 of 4

1.4. Seal around all plumbing, conduit, support columns or other
penetrations that come through the VaporBlock® Plus'" membrane.
1.4a. Method 1: Pipes four inches or smaller can be sealed with Raven
VaporBoot Plus preformed pipe boots. VaporBoot Plus preformed
pipe boots are formed in steps for 1", 2", 3" and 4" PVC pipe or IPS size
and are sold in units of 12 per box (Fig. 3 & 5).
Pipe boots may also be fabricated from excess VaporBlock® Plus -
membrane (Fig. 4 & 6) and sealed with VaporBoot Tape or VaporSeal'"
Tape (sold separately).
1.4b. Method 2: To fabricate pipe boots from VaporBlock® Plus'"" excess
material (see Fig. 4 & 6 for A-F):
A) Cut a square large enough to overlap 12" in all directions.
B) Mark where to cut opening on the center of the square and cut four
to eight slices about 3/8" less than the diameter of the pipe.
C) Force the square over the pipe leaving the tightly stretched cut area
around the bottom of the pipe with approximately a 1/2" of the
boot material running vertically up the pipe. (no more than a 112" of
stretched boot material is recommended)
D) Once boot is positioned, seal the perimeter to the membrane by
applying 2-sided Raven Butyl Seal Tape in between the two layers.
Secure boot down firmly over the membrane taking care not to
have any large folds or creases.
E) Use VaporBoot Tape or VaporSeall" Tape to secure the boot to the
pipe.
VaporBoot Tape (option) — fold tape in half lengthwise, remove half
of the release liner and wrap around the pipe allowing 1" extra for
overlap sealing. Peel off the second half of the release liner and
work the tape outward gradually forming a complete seal.
VaporSeal'" Tape (option) - Tape completely around pipe
overlapping the VaporBlock® Plus- square to create a tight seal
against the pipe.
F) Complete the process by taping over the boot perimeter edge with
VaporSealTM' Tape to create a monolithic membrane between the
surface of the slab and gas/moisture sources below and at the slab
perimeter. (Fig. 4 & 6)
Preformed Pipe Boot
rt
VaporSealTM^ VaporBoot Plus
4" Tape Performed Boot
Raven Butyl Seal 2-sided Tape
Cin S
1. Cut out one of the
ph preformed boot steps
(V to 4").
2. Tape the underside boot
perimeter with 2-sided
Butyl Seal Tape.
- 3. Force the boot over
pipe and press tape
firmly in place.
4. Use VaporSeal- Tape
i to secure boot to the
pipe.
" 5. Tape around entire boot
edge with VaporSeal'""
Tape.
Method 1
1. Cut a square of VaporBlock® 2. Cut four to eight slices about 3/8"
Plus'"" barrier to extend at least less than the diameter of the pipe.
12" from the pipe in all directions.
3. Force over pipe and tape the
underside boot perimeter to
existing barrier with 2-sided
Butyl Seal Tape.
4. Tape over the boot
perimeter edge with
AMW VaporSealTI Tape.
5. Use Raven VaporBoot or
VaporSealTM' Tape and
overlap 1" at the seam. Aphr
Method 2
Fin
VaporSeal-
4" Tape
VaporSeal-
4"
Square Material Pipe Boot
VaporBoot Flexible Tape
VaporSeall" 4" Tape
12" VaporBlock&
(minimum) PlusTM'
J /Material
Raven Butyl Seal 2-sided Tape
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Page 2 of 4

1.5. Sealing side -by -side multiple penetrations (option 1);
A) Cut a patch large enough to overlap 12" in all directions (Fig. 7)
of penetrations.
B) Mark where to cut openings and cut four to eight slices about
3/8" less than the diameter of the penetration for each.
C) Force patch material over penetration to achieve a tight fit and
form a lip.
D) Once patch is positioned, seal the perimeter to the membrane
by applying 2-sided Raven Butyl Seal Tape in-between the two
layers. (Fig. 8)
E) After applying Raven Butyl Seal Tape between the patch and
membrane, tape around each of the penetrations and the patch
with VaporSeal'" 4" tape. (Fig. 9) For additional protection apply
POUR-N-SEAL'" or an acceptable polyurethane elastomeric
sealant around the penetrations. (Fig. 10)
Cut a patch large
enough to overlap
12" in all directions
and slide over
penetrations (Make
openings as tight
as possible.)
CL. 7
After applying Raven
Butyl Seal Tape
between the patch
and membrane, tape
around the perimeter
of the penetration
and the patch with
VaporSeal-
4" Tape.y iy
Fin_ 9
Option 1
Raven Butyl Seal 2-sided Tape
Fin A
Once the overlay
patch is positioned,
seal the perimeter
to the membrane
by applying 2-sided
Raven Butyl Seal
Tape in-between the
two layers.
qW
For additional protection
apply POUR-N-SEAL'"' or
an acceptable polyurethane
elastomeric sealant around
the penetrations.
Fin R
Fin 1 n
Page 3 of 4

Option 2
1.6. POUR-N-SEAL'"" method of sealing side -by -side multiple penetrations
(option 2);
A) Install the vapor barrier as closely as possible to pipe penetrations to
minimize the amount of POUR-N-SEALT' necessary to seal around all
penetrations.
B) Once barrier is in place, remove soil or other particles with a dry cloth
or a fine broom to allow for improved adhesion to the POUR-N-
SEALT°" liquid.
C) Create a dam around the penetration area approximately 2" away
from the pipe or other vertical penetrations by removing the release
liner from the back of a 1" weather stripping foam and adhere to the
vapor barrier. Form a complete circle to contain the POUR-N-SEALTM
materials (Fig.11).
D) Once mixed, pour contents around the pipe penetrations. If needed,
a brush or a flat wooden stick can be used to direct the sealant
completely around penetrations creating a complete seal (Fig.12-13).
E) DO NOT leave excess POUR-N-SEALTIM in plastic container for longer
than the time it takes to pour sealant.
Fig. 12
1.7. Proper installation requires all holes and openings are repaired prior
to placing concrete. When patching small holes, simply cut a 12" long
piece of 12" wide VaporSealT"' tape. Remove release liner and center
over the opening. Apply pressure to create a seal (Fig. 14-15).
1.8. When installing VaporBlock® Plus' around pipe penetrations,
vertical columns, electrical ducts and other obstructions, you will
find it necessary to cut it to the nearest outside edge. This cut can
be easily sealed with 12" wide VaporSeal- tape, by simply centering
it over the cut, 6" on either side. Once the tape is placed correctly,
apply pressure to assure a complete seal (Fig. 16).
Reminder Note: All holes or penetrations through the membrane will need
to be patched with 12" VaporSealTM' Tape.
dAeigl
Fin 11-
Fig. 13
r;- 1 d
E*.- 7
Page 4 of 5

2.1. When installing reinforcing steel and utilities, in addition to the
placement of concrete, take precaution to protect VaporBlock®
Plus". Carelessness during installation can damage the most
puncture —resistant membrane. Sheets of plywood cushioned with
geotextile fabric temporarily placed on VaporBlock® Plus- provide
for additional protection in high traffic areas including concrete
buggies.
2.2. Use only brick -type or chair -type reinforcing bar supports to protect
VaporBlock® Plus" from puncture.
2.3. Avoid driving stakes through VaporBlock® Plus". If this cannot be
avoided, each individual hole must be repaired per section 1.7.
2.4. To avoid penetrating VaporBlock® PlusTM' when installing screed
supports, utilize non -penetrating support, such as the Mako®
Screed Support System (Fig. 17). Avoid driving stakes through
VaporBlock® PlusT°". If this cannot be avoided, each individual hole
must be repaired per figures 14-15.
2.5. If a cushion or blotter layer is required in the design between
VaporBlock® PlusT" and the slab, additional care should be given if
sharp crushed rock is used. Washed rock will provide less chance of
damage during placement. Care must be taken to protect blotter layer
from precipitation before concrete is placed.
VaporBlock® PlusT' Gas & Moisture Barrier can be identified on site
as gold/white in color printed in black ink with following logo and
classification listing (Fig. 18)
VaporBlock® PlusT""
Gas & Moisture Barrier
* Patent Pending
C;_ 14
ri- 17
Vapor B lock° Plus"
Fig. 18
Note: To the best of our knowledge, unless otherwise stated, these are typical property values and are intended as guides only, not as specification
limits. Chemical resistance, odor transmission, longevity as well as other performance criteria is not implied or given and actual testing must be
performed for applicability in specific applications and/or conditions. RAVEN INDUSTRIES MAKES NO WARRANTIES AS TO THE FITNESS FOR
A SPECIFIC USE OR MERCHANTABILITY OF PRODUCTS REFERRED TO, no guarantee of satisfactory results from reliance upon contained
information or recommendations and disclaims all liability for resulting loss or damage. Limited Warranty available at wwww.RavenEFD.com
ENGINEERED FILMS
P.O. Box 5107 Sioux Falls, SD 57117-5107 [e-mail]
Ph: [phone] • TF: [phone] www.ravenefd.com
020316 EFD 1127
© Raven 2016. All Rights Reserved. Page 5 of 5

Rn 4EC-4 Inline Radon Fan
Item #: 99923
Variant : 120V 1- 60Hz
or WON
a W tam 81W
n
L J
E DVS
F NvE
Technical parameters
Norminal data
Voltage (nominal) 120 V
Frequency 60 Hz
Phase(s) 1-
Input power
Input current
Impeller speed
Air flow
Protection/Classification
169 W
2.1 A
4,084 r.p.m.
max 555 cfm
Enclosure class, motor IP54
Insulation class B
Certificate HVI, cULus
Dimensions and weights
Weight 7.8 Ito
fantech°
• a systemair company
Description
Rn4EC-4 Radon Fan is the most powerful product on the market for active radon mitigation applications
where high suction and high flow are required. It is an excellent solution for high radon levels, poor sub -
slab communication, multiple suction points and/or large sub slab footprint.
Designed specifically for Active Soil Depressurization (ASD) mitigation applications
High Suction, High Flow
• Dial your suction in with a built-in speed control
Two soft anti -vibration couplers included
Set up for a 4" PVC pipe
• For residential and commercial applications
Air -tight housing - zero leakage
UV resistant plastic housing...
Find more details in our online catalogue
Performances
HVI Certified Ratings)
Model Spee Ctrl
High Static/Low Flow
Low Static/High Flow
d Voltage
Inch OF w
Inch
OF w
we M
we
M
Rn4EC 100 10V
4.5 39 14
0.2
320 17
4
80% 8V
3.14 31 84
0.2
300 13
5
60% 6V
1.56 20 33
0.2
210 52
NOTE: Performance
is based on 4 inch diameter
ducting.
Dimensions
0
l
E ��a•
I_ _I
Model A B c D E F G
Rn2EC 415/32 (114) 10 (254) 1 1/4 (32) 91/4 (235) - - -
Rn4EC-3 57/8 (149) 11 1/2 (292) 1 1/4 (32) 91/4 (235) 4 (102) 31/2 (89) 6 (152)
Rn4EC-4 57/8 (149) 11 1/2 (292) 1 1/4 (32) 91/4 (235) 4 (102) 41/2 (114) 6 (152)
Dimensions in inches (mm).
Item name: Rn 4EC-4 Inline Radon Fang Product link: https://shop.fantech.net/en-US/productPermalink?p=399892 I Item #: 99923 1 Variant: 120V 1- 60Hz I Document
type: Product card I Created on: 2021-06-17 1 Generated by: Fantech Online Catalogue I Language: English
Pagel of 3

Wiring
Potentiometer 120 V Supply
Performance curve
in. wg.
5
4
3
2
1
0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 cfm
Item name: Rn 4EC-4 Inline Radon Fang Product link: https://shop.fantech.net/en-US/productPermalink?p=399892 I Item #: 99923 1 Variant: 120V 1- 60Hz I Document
type: Product card I Created on: 2021-06-17 1 Generated by: Fantech Online Catalogue I Language: English
Page 2 of 3

Hydraulic data
Required air flow
Required static pressure
Working air flow
Working static pressure
Air density
Power
Fan control - RPM
Current
Airflow efficiency
Control voltage
Supply voltage
Documents
142001 Rn2EC-Rn4-EC OIPM EN FR.PDF
0.075 Ib/fN
Item name: Rn 4EC-4 Inline Radon Fang Product link: https://shop.fantech.net/en-US/productPermalink?p=399892 I Item #: 99923 1 Variant: 120V 1- 60Hz I Document
type: Product card I Created on: 2021-06-17 1 Generated by: Fantech Online Catalogue I Language: English
Page 3 of 3

ACCESSORIES
SEAMING TAPES & OTHER ACCESSORIES FOR PLASTIC SHEETING
From tie -down fasteners to field seaming tape, Raven Industries has the accessories you need to
maximize your film's versatility and minimize installation time on the job.
VaporBondT"' Tape (TVB4)
VaporBond'" Tape is a white single -sided
-v tape that combines a heavy-duty, weather -
resistant polyethylene backing with an
aggressive rubber adhesive. VaporBond'"
Tape offers excellent seaming capabilities for
our materials with an "Easy Tear' feature
to reduce installation time. TVB4 has a
WVTR of 0.18 perms per ASTM D3833. Typical
applications include vapor retarders, covers
and liners.
Available in 4" x 210' roll.
VaporSeaIT" Tape (TVSP4/TVSP12)
VaporSeaIT" Tape is a patent pending single -
sided 7-layer gas barrier tape with a release
liner for ease of installation. The backing
contains a layer of highly impermeable
EVOH designed to block migration of radon,
methane, and VOC's. An aggressive acrylic
adhesive provides outstanding adhesion to
polyethylene over a wide temperature range.
Typical uses include joining, repairing and
sealing gas/moisture barriers.
Available in 4" x 160' and 12" x 50' rolls.
VaporBootT" Tape (TBOOT)
VaporBootT" Tape is a single -sided elastomeric
butyl tape used to complete pipe boot
installations (sealing the boot to the pipe).
The 100% stretchable butyl adhesive features
excellent adhesion values and 3-D stretching
that can be easily molded to multiple surfaces
without any creases and folds.
Available in 2" x 16.4' roll.
VaporBootTM System (VBOOT)
The VaporBootT" System is designed to assist
in securing pipe and other penetrations that
run vertically through the vapor retarder
material. The VaporBootTM System offers a
quick solution and is delivered to the jobsite in
a complete package. VaporBoots are produced
from high performance VaporBlock® material.
Package Contents:
25 - VaporBoots (18" x 18", w/precut center marker)
1 - roll of VaporBoot Tape
R25B Tape (112513)
R25B Tape is a single -sided aggressive
synthetic elastomeric adhesive that bonds
instantly to properly prepared polyethylene
and polypropylene. The black polymer
backing and adhesive is specially formulated
to provide years of performance even in direct
sunlight. A poly release liner provides for ease
of installation.
Available in 4" x 100' roll.
Butyl Seal Tape (TP2BR / TP6BR)
Butyl Seal is a double -sided reinforced
aggressive black butyl rubber tape used to
join panels of polyethylene and polypropylene
together by overlapping the edges and
applying Butyl Seal in between. It is also
used to adhere to concrete walls and footings
when properly prepared. Butyl Seal is non -
hardening and flexible.
Available in 2" x 50' and 6" x 50' rolls.
POUR-N-SEALT"" (PNS1G)
POUR-N-SEAL'" is a gray two part epoxy
used to seal around multi -pipe penetrations
in areas where pipe boots are not practical,
when installing underslab barriers. The POUR-
N-SEAL'" system installation guide references
a 1" x 25 lineal feet adhesive -backed foam to
form a dam around multi -pipe penetrations
to contain POUR-N-SEAL'" during the setting
process. The 1 " x 25 ft. adhesive -backed foam
is sold seperately as FOAM25.
VaporBootT1 Plus Preformed Pipe Boots (VBPBT)
VaporBootTM Plus Preformed Pipe Boots are
produced from heavy 40 mil co -extruded
polyethylene and barrier resins for excellent
strength and durability. The preformed
boots are stepped to fit 1" to 4" wide pipe
penetrations. VaporBootTM Plus Preformed
Pipe Boots are available in quantities of 12
per box.
0 2021 RAVEN INDUSTRIES INC. All rights reserved.

ACCESSORIES
Dura+Skrim° Reinforced Sandbags
Dura*Skrim® reinforced sandbags are
used to secure large covers and liners
to prevent wind damage. Sandbags are
produced with strong Dura*Skrim® 8
& 12 mil reinforced polyethylene. These
15" wide x 24" long bags are designed to
hold 35 lbs. Sandbags are also available
in other Raven reinforced materials with
minimum order requirements.
11.8" Cable Ties are also available.
Tie -Down Buttons (BUTI) & Tarp Grabbers (BUTEZ)
®Tie -Down Buttons and Tarp Grabbers help keep
plastic sheeting securely in place. Tie -Down Buttons
are designed to eliminate traditional grommets in
1 plastic sheeting up to 10 mil thick and are reusable
l plastic fittings that are easy to install in any
s position. Tarp Grabbers are up to 4 times
stronger than a brass grommet and are
typically used in heavier plastic sheeting
from 10 mil to 30 mil thick. Great for
equipment covers, large storage covers
and truck tarps.
BACKING
ADHESIVE
COLOR
TYPE
SIZE
ROLLS PER CASE
WEIGHT PER CASE
ADHESION VALUES
PERMS
SERVICE TEMP.
MIN.
APPLICATION TEMP.
IDEAL STORAGE
TEMP. / HUMIDITY
6.7 mil Polyethylene
3.3 mil Rubber Based
Pressure -Sensitive
White
Single Sided
4" x 210'
12
45 Ibs
35 oz. / in. (to steel)
0.081 g/(24h*100 in')
-40' F to +180* F
50' F
7 mil EVOH/LLDPE
2 mil Acrylic Adhesive
Pressure -Sensitive
Silver
Single Sided
4" x 160' / 12" x 50'
12/4
50 Ibs / 18 Ibs
80 oz. / in. (to steel)
0.014 g/(24h*100 in')
-40' F to +190* F
50° F
70* F w/ 40-50 % 60°-80° F w/ 40-60 %
Dura-ClipT" (CLIP11)
Raven Welding Rod
30 mil EPDM
20 mil
Butyl Rubber
Black
Single Sided
2" x 16.4'
64
45 Ibs
145 oz. / in. (to steel)
N/A
+14' F to +122° F
14' F
70' F w/ 70 %
These full size clips are 11" long and
fit most commercial scaffolding. Dura-
ClipTM' will securely fasten your poly
sheeting to scaffolding, reducing wind
whip and increasing the life of your
enclosure. The Dura-ClipT" is normally
placed about every Tonto the enclosure.
Raven Welding Rod is used for field
seaming, repairs and detail work, such as
installing pipe boots. Packaged in 25 lb
spools, it is available in 4mm and 5mm
sizes to fit most brands of extrusion
guns. Raven Welding Rod is made
from a thermally UV stabilized LLDPE
resin and is available in both black and
white to correspond with the color of
geomembranes being utilized.
8 mil Multi -Polymer
17 mil
Synthetic Elastomeric
Black
Single Sided
4" x 100'
6
33 Ibs
144 oz. / in. (to steel)
<0.005 g/(24h*100 in 2)
+20' F to +180* F
35° F
70' F w/ 40-50 %
N/A
40 mil
Butyl Rubber
Black
Double Sided
2" x 50'/ 6" x 50'
16/4
47 Ibs / 20 Ibs
88 oz. / in. (to steel)
0.82 g/(24h*100 in 2)
0° F to +170* F
35' F
70* F w/ 40-50 %
R r —{• ti r Note: To the best of our knowledge, unless otherwise stated, these are typical property values and are intended as guides only, not as specification
�'!: 1• limits. Chemical resistance, odor transmission, longevity as well as other performance criteria is not implied or given and actual testing must
;•_ be performed for applicability in specific applications and/or conditions. RAVEN INDUSTRIES MAKES NO WARRANTIES AS TO THE FITNESS
.ti FOR A SPECIFIC USE OR MERCHANTABILITY OF PRODUCTS REFERRED TO, no guarantee of satisfactory results from reliance upon contained
information or recommendations and disclaims all liability for resulting loss or damage. Limited Warranty available at www.RavenEFD.com
❑� 1 RAVEN ENGINEERED FILMS
Scan QR Code to download P.O. Box 5107 Sioux Falls, SD 57117-5107 [e-mail]
current technical data sheets Ph: [phone] • TF: [phone] www.ravenefd.com
via the Raven website. © 2021 RAVEN INDUSTRIES INC. All rights reserved. 012021 EFD 1103

,Puiyer
■ ■ ■■■■■■■■■■■■
■ NONE ■■■■■■■■■
—■ ■■ EEEEEEEEEE
■ EEEEEEEEEEEE
No ■ ■ EEEEEEE
SERIES 1950 1 EXPLOSION -PROOF DIFFERENTIAL PRESSURE SWITCH
FEATURES/BENEFITS
• Explosion -proof and weatherproof housing provides device protection for
outdoor use or harsh environment operation
• External set point screw provides easy access without opening or
disassembling enclosure
• Easily accessible electrical connection simplifies the installation
APPLICATIONS
• HVAC applications
• Process applications
• All-weather applications
DESCRIPTION
The SERIES 1950 Explosion -proof Differential Pressure Switch combines the best features
of the popular Dwyer® Series 1900 Pressure Switch with an integral explosion -proof and
weatherproof housing, making it an exceptional value for either application. It is CE, UL
and CSA listed, FM approved for use in Class I, Div 1, Groups C and D, Class II Groups
E, F, and G and Class III hazardous atmospheres NEMA 7 & 9. Rain tight NEMA 3 (IP54),
weatherproof features include a drain plug and 0-ring seal in cover. Electrical connections
are easily made by removing front cover. For convenience the set point adjustment screw
is located on the outside of the housing. Twelve models offer set points from .03 to 20 in
w.c. (0.0075 to 5 kPa) and from .5 to 60 psi (0.035 to 3.5 bar). The unit is very light and
compact - about half the weight and bulk of other explosion -proof or weatherproof switches
with separate enclosures.
SPECIFICATIONS
'X lyer
OwrEP .r;SI:.L'r.;aii arc:
140 CONT EC{N C1Tf .h 16 •.5 n
' 1950-
gWA1 RAILW.
!11�,Al
25250490MC ((Q Q
I+ACCIIM•'1C�Co
HRAGM YERiIGiCLI
PRESS' 45 1N K 1.11 6ml FAx+TZ0 PN
RGE PRESS 10 PSI 169 b•�iM4: '4D'F TO 14C°P
i•4p c To 6o ti
91EN
Service
Air and non-combustible, compatible gases.
Wetted Materials
Consult factory.
Temperature Limits
-40 to 140°F (-40 to 60°C); 0 to 140°F (-17.8 to 60°C) for 1950P-8, 15, 25, and 50. -30 to 130°F (-34.4 to 54.4°C)
for 1950-02.
Pressure Limits (Continuous)
1950's - 45 in w.c. (0.11 bar); 1950P's - 35 psi (2.41 bar); 195OP-50 only - 70 psi (4.83 bar). Surge: 1950's - 10 psi
(0.69 bar), 1950P's - 50 psi (3.45 bar), 1950P-50 only - 90 psi (6.21 bar).
Enclosure Rating
NEMA 3 (IP54), NEMA 7 & 9.
Switch Type
Single -pole double -throw (SPDT).
Electrical Rating
15 A @, 125, 250, 480 VAC, 60 Hz. Resistive 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC, 60 Hz.
Electrical Connections
3 screw type, common, normally open and normally closed.
Process Connections
1/8" female NPT.
Mounting Orientation
Diaphragm in vertical position. Consult factory for other position orientations.
Set Point Adjustment
Screw type on top of housing.
Weight
3.25 lb (1.5 kg); 1950-02 model, 4.4 lb (2 kg).
Agency Approvals
CE, CSA, FM, UL.
MEN
■■
dwyer-inst.com
DMER INSTRUMENTS, INC.
T. 219-879-8000 1 F:219-872-9057 1 [e-mail]
800-872-9141

�iuyer.
DIMENSIONS
1/8 FEMALE NPT
EXTERNAp5-7/16
LOW PRESSURE CONNECTION
GROUNDCAPTIVE SCREW—
[2] 017/64 [6.75] MOUNTIN
HOLES EQUALLY SPACED O
A4-7/8 [123.831 B.VENT DRAIN
RANGE ADJUSTMENT SCREPLUG
38.1-23/32[43.641
[138.13] 3-1/2 [88.90]
HOW TO ORDER
— 1-15/32 [37.301
— 3/8 [9.53]
_f 27/32 [21.43]
27/32
[21.431
Use the bold characters from the chart below to construct a product code.
SWITCH TYPE
1950 - Pressure Switch - Inches w.c.
1950P - Pressure Switch - PSID
RANGE
-02 - 0.03 - 0.10- w.c.
-00 - 0.07 - 0.15- w.c.
-0-0.15-0.5-w.c.
-1 - 0.4 - 1.6"- w.c.
-5-1.5-5.5'w.c.
-10 - 3.0 - 11.0- w.c.
-20 - 4.0 - 20.0- w.c.
-2 - 0.5 - 2.0 psid
-8 - 1.5 - 8.0 psid
-15 - 3.0 - 15.0 psid
-25 - 4.0 - 25.0 psid
-50 - 15.0 - 50.0 psid
*The 2F is standard
MICRO SWITCH TYPE
-2 - 1 OG Mica Silver Contact*
-6 - 10G Phenolic Gold Contact
-M - 1 OC Phenolic Silver Contact
0
■ ■■■
■■N; _
1/8 FEMALE NPT HIGH
PRESSURE CONNECTION
3/8 [9.53] 1/2 FEMALE NPT
ELECTRICAL CONNECTION
XYZ -X -X
X -X
■ ■■■■■■■■■■■■
NONE ■■■■■■■■■
■■ ■■■■■■■■■■
■ ■■■■■■■■■■■■
...........
WIRING DIAGRAM
COM NO NC
OPTIONS
-AT -Aluminum Tag
-PRESET - Preset
-ST - Stainless Steel Tag
DIAPHRAGM
MATERIAL
B - Buna-N
F - Flurosilicone*
N - Neoprene
S - Silicone
V - Fluroelastomer
Important Notice: Dwyer Instruments, Inc. reserves the right to make changes to or discontinue any product or service identified in this publication without notice. Dwyer advises its customers to obtain the
latest version of the relevant information to verify, before placing any orders, that the information being relied upon is current.
SEEN
■■ ■
dwyer-inst.com
DWYER INSTRUMENTS, INC.
T: 219-879-8000 [ F: 219-872-9057 [ [e-mail]
800-872-9141
DS-1950 1 4/17