20050_rite Aid VIMS Mod Request_Building 2 - North_Suites 110,111,112_Rev 1_100821

Via Email

October 11, 2021

NCDEQ – Division of Waste Management
Brownfields Program
1646 Mail Service Center
Raleigh, NC 27699-1646

Attn: Ms. Carolyn Minnich

Re: VIMS Modifications Approval Request – Revision 1
Rite Aid Facility - Camp North End
Building 2 – North – Suites 110, 111, & 112
1776 Statesville Avenue
Charlotte, Mecklenburg County, North Carolina
Brownfields Project No. 20050-16-060
H&H Project No. ATL.001

Dear Carolyn:

On behalf of Camp Landowner, LP, Hart & Hickman, PC (H&H) has prepared this letter to request
that the North Carolina Department of Environmental Quality (DEQ) Brownfields Program
provide approval for proposed modifications to the vapor intrusion mitigation plan (VIMP)
prepared for the Camp North End Building 2 – North building (Brownfields Project No. 20050-
16-060) located at 1776 Statesville Avenue in Charlotte, Mecklenburg County, North Carolina
(Site). The VIMP modifications in this request are related to Suites 110, 111, & 112 located on
the northern most portion of Building 2 – North.

On October 28, 2020, the DEQ Brownfields Program provided approval for the Vapor Intrusion
Mitigation Plan – Revision 1 dated October 2, 2020 related to installation of a vapor intrusion
mitigation system (VIMS) during renovation/upfit activities for the existing Building 2 – North.
In accordance with the DEQ-approved VIMP, an active sub-slab depressurization (SSD) system
using the Cupolex® aerated floor system, a new concrete slab, and electric fans along with a
Ms. Carolyn Minnich
October 11, 2021
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vacuum alarm system are proposed to be installed during renovation of the building. Currently,
renovation activities are underway in Building 2 – North to upfit the building for commercial
purposes. A previous VIMP – Modification Request, dated May 4, 2021, was approved by DEQ
in a letter dated May 13, 2021. The May 2020 modification request included Revision 2 VIMS
design drawings dated April 19, 2021. The proposed VIMP modification detailed here-in includes
VIMS design drawings identified as Revision 3, and dated August 2, 2021, included as Attachment
1. A description of the redevelopment conditions requiring the VIMP modifications is described
in the following paragraphs.

The northern portion of Building 2 – North includes three suites identified as Suites 110, 111, and
112 (see Sheet VM-1). These three suites are proposed to each be occupied by a restaurant
business. The specific tenants for these suites are not yet selected and therefore the specific
restaurant layouts are not yet known. The Cupolex aerated floor and concrete slab will not be
installed until a tenant upfits these suites to avoid removing large sections of Cupolex and the new
slab during upfit activities.

The proposed Cupolex aerated floor system in the DEQ-approved VIMP includes an
interconnected Cupolex floor below Suites 110, 111, and 112, and the remaining building. The
Cupolex system is designed to increase sub-slab annular space to assist in sub-slab
depressurization after the entire interconnected floor system is installed. However, if an area of
Cupolex is left open and not sealed, then air will be pulled by the active fans of the SSD system
from outside of the Cupolex system. Although potentially contaminated sub-slab vapors will still
be removed from below the proposed slab by the active fans of the SSD system, the added air from
outside of the Cupolex system will impact the ability of the proposed SSD system to build vacuum
within the Cupolex system. Because upfit of the restaurant suites may occur at a later date than
the remaining portions of the building, the proposed modifications included in this modification
request are to allow for the active SSD system to effectively operate for the completed portions of
the building prior to completion of Suites 110, 111, and 112. The proposed VIMP modifications
described below were developed in accordance with DEQ Division of Waste Management (DWM)
Vapor Intrusion Guidance.
Ms. Carolyn Minnich
October 11, 2021
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Proposed VIMP Modifications
A description of the proposed VIMS modifications in the Revision 3 design drawings is described
below.
• A cut-off concrete footer (turned down slab) will be installed to separate Suite 107 from
Suites 110, 111, and 112. A cut-off footer will also be installed between Suite 110 and
Suite 111, and an additional footer between Suite 111 and Suite 112. The cut-off footers
will be constructed to create an air tight barrier between the suites to separate the void
space of the Cupolex aerated floor between the completed areas and incomplete areas. In
addition to the footer, a demising wall between Suite 107 and Suites 110,111, and 112, and
demising walls between Suites 110 and 111, and between Suites 111 and 112 will also be
constructed. The demising walls will be an interior stud framed wall finished with drywall
that will be constructed from the existing floor to the existing roof. Each wall will be
constructed to prevent direct air transfer between the suites and each suite will contain
separate HVAC equipment and systems that do not connect to the adjacent suites.
Furthermore, no doors, windows, or open conduits that will allow direct air transfer will be
installed in these demising walls. If a conduit must be installed for utility purposes through
the demising wall, it will be sealed with a sealant to prevent air transfer between the suites.

• The cut-off footer and demising wall described above located between Suite 107 and Suites
110, 111, and 112 will be installed during building renovation to separate the suites prior
to completion of the VIMS and occupancy of the building. In addition, the influence testing
and indoor air analytical testing as described in the DEQ-approved VIMP and subsequent
modification requests will be completed prior to occupancy of each suite. The proposed
cut-off footer and demising wall between the individual restaurant suites (Suites 110, 111,
and 112) will be installed prior to occupancy of the restaurants, but may not be installed
prior to occupancy of Suite 107.

• A new riser, identified as Riser F-5, will be installed to provide sub-slab depressurization
of the proposed restaurant Suites 110, 111, and 112 (see VIMS Drawings – Rev 3). Riser
F-5 will contain an electric radon fan and differential pressure sensor connected to the
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October 11, 2021
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proposed Sentinel alarm system. The fan and discharge will contain a pipe manifold with
an individual 3-inch diameter PVC riser that connects to the Cupolex void space for each
restaurant suite. A ball valve will be installed on each individual riser to allow air cut-off
to a specific suite until upfit of that particular suite is completed. After the Cupolex floor
and new concrete slab is installed in each suite, the ball valve will be opened to allow for
influence testing and activation of the system. The ball valve will be located within a wall
access panel with a locked door and labels inside of the access panel will read “Vapor
Mitigation System – Contact Maintenance” or similar, to prevent unintended changes to
the valve open/close position.

• A sub-slab vacuum monitoring point will be installed within each restaurant suite in the
same manner as the proposed monitoring points in the DEQ-approved VIMP. Each
restaurant suite will contain its own interconnected Cupolex void space, and thus one
monitoring point each suite will provide sub-slab vacuum data across the entire suite.
There are no planned cut-off footers inside of each individual suite planned.

• The location for Riser F-4 will be moved approximately 50 feet to the north from the
bathroom storage room to within the demising wall between Suite 107 and Suite 111. Riser
F-4 was proposed to be located in the bathroom storage room in the VIMP Modification
request dated May 2, 2021. The suite layout plans changed which would have caused the
riser pipe to be exposed within the suite above the bathroom. Because the proposed
demising wall will run from the floor to the ceiling, the riser pipe will be better protected
and less visible to tenants if installed within the wall itself. The new proposed location
will still interconnect with the Cupolex void space throughout Suite 107 and provide the
same vacuum coverage as the previously proposed location.

Because Suite 107 is proposed to be completed prior to the restaurant suites, an additional pre-
occupancy indoor air sample will be collected in Suite 107 at the approximate location shown on
Sheet VM-1. One additional indoor air sample will be collected from each restaurant suite (Suites
110, 111 and 112) prior to occupancy with the same methods and reporting requirements as
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indicated in the VIMP. The quality control samples described in the VIMP including a duplicate
indoor air sample and background ambient air sample will be collected during each sampling
event. Furthermore, the semi-annual indoor air sampling events indicated in the VIMP will also
apply to these restaurant suites following the initial pre-occupancy sampling event. In addition,
while the restaurant suites may be upfitted at a later date then the rest of the building, the same
VIMS inspections, DEQ notifications, pre-occupancy influence testing, post-construction
quarterly vacuum monitoring, and reporting requirements as indicated in the DEQ-approved VIMP
will be followed for these suites.

According to the DWM Vapor Intrusion Guidance: “Risk-based screening is used to identify sites
or buildings likely to pose a health concern, to identify buildings that may warrant immediate
action, to help focus site-specific investigation activities or to provide support for building
mitigation and other risk management options including remediation.” In addition, this VIMP
modification request was prepared to satisfy the vapor intrusion mitigation condition in the
Brownfields Agreement. Per the North Carolina Brownfields Property Reuse Act 130A-310.32, a
prospective developer, with the assistance of H&H for this project, is to provide NCDEQ with
“information necessary to demonstrate that ... as a result of the implementation of the brownfields
agreement, the brownfields property will be suitable for the uses specified in the agreement while
fully protecting public health and the environment instead of being remediated to unrestricted use
standards.” It is in the context of these risk-based concepts that H&H’s professional engineer
makes the following statement.

The Vapor Intrusion Mitigation System (VIMS) detailed herein is designed to mitigate intrusion
of subsurface vapors into the subject building from known Brownfields Property contaminants in
a manner that is in accordance with the most recent and applicable guidelines including, but not
limited to, DWM Vapor Intrusion Guidance, Interstate Technology & Regulatory Council (ITRC)
guidance, and American National Standards Institute (ANSI)/American Association of Radon
Scientists and Technologists (AARST) standards. The sealing professional engineer below is
satisfied that the design is fully protective of public health from known Brownfields Property
contaminants.
Ms. Carolyn Minnich
October 11, 2021
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We appreciate your prompt review and approval of the proposed modifications to the VIMS
design. If you have any questions or require additional information, please do not hesitate to
contact me at 704-586-0007.

Sincerely,

Hart & Hickman, PC

Seal:

Trinh DeSa, PE Matt Ingalls
Senior Project Engineer Senior Project Manager

H&H License #C-1269 / #C-245

cc: Mr. Kevin Slaughter (NCDEQ)
Mr. Kelly Johnson (NCDEQ)

Attachment 1:
VIMS Design Sheets - VM-1, VM-2, VM-3 (Revision 3 - dated August 2, 2021)

Attachment 1
VIMS Design Sheets - VM-1, VM-2, VM-3 (Revision 3 - dated August 2, 2021)

1234561718192021222324ABCDEFGHIJ78910111213141516LINE OF CLERESTORYABOVELINE OF CLERESTORYABOVELINE OF CLERESTORYABOVELINE OF CLERESTORYABOVENEW STOREFRONT BYRESTAURANT TENANTNEWSTOREFRONTBY TENANTNEWSTOREFRONT BYRESTAURANTTENANT, TYP.NORTH PORCHALIGNNEW WALLINFILL INEXISTINGOPENINGCOVERED PORCHNEW STOREFRONTIN NEW OPENINGNEW UTILITY TRENCHINSTALLED PRIOR TOCUPOLEXW2
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EXISTING RAMP TO REMAINW3
NEW STEEL PAN, STEELFRAMED STAIR ANDLANDINGW3W3 W3FREE STANDING PLANTERS (FFE),FEATHER CONCRETE ATTOP OF EXISTING RAMPTO MEET NEW SLABELEVATIONNEW RELOCATEDRISER ROOM2425262728293031LINE OF CLERESTORYABOVENEW STREET SURFACE BELOW,SEE CIVILSTOREFRONTIN EXISTINGOPENINGNEWSTOREFRONTIN OPENINGNEWSTOREFRONTIN EXISTINGOPENINGNEW STOREFRONT INEXISTING OPENINGNEW WALL INFILL INEXISTING OPENINGNEW STOREFRONTIN EXISTINGOPENINGNEW WINDOWSSOUTH PORCHNEWSTOREFRONTSTOREFRONTIN EXISTINGOPENINGNEW STOREFRONTIN NEW OPENINGW1W3NEW UTILITY TRENCHINSTALLED PRIOR TOCUPOLEXW3W1W1W1 W1W1W1W1
751748748a/cF-2F-1F-3F-4F-5SUITE 105SUITE 106RISERSUITE 103SUITE 107SUITE 110SUITE 111SUITE 112SUITE 104SUITE 100ELEC 2RISERRISERLIFTSTAIRSUPLEGENDEXISTING I-BEAM COLUMNEXTENT OF CUPOLEX®WINDI H.5 VENTILATED FLOOR AND NEW 4-INCH CONCRETESLAB (5 CM / 2-INCH HEIGHT)4-INCH DIA SCH 40 SOLID PVC OR CAST IRON VERTICAL RISER LOCATION WITH FANNUMBER (SEE DETAILS 8, 9, & 10 ON SHEET VM-2)PROPOSED UTILITY TRENCH(INSTALLED PRIOR TO CUPOLEX AND NEW CONCRETE SLAB)2-INCH DIA SOLID PVC TRANSFER PIPEDIFFERENTIAL PRESSURE SENSOR/ALARM (SEE DETAIL 11 ON SHEET VM-2)MONITORING POINT (SEE DETAIL 6 ON SHEET VM-2)PROPOSED STUD WALL (INSTALLED ATOP NEW CONCRETE SLAB)EXISTING WALL TO REMAINPROPOSED LOCATION FOR POST-CONSTRUCTION INDOOR AIR SAMPLE (6 TOTAL)EXTENT OF 20-MIL VAPOR BARRIERNOTES:1.REFER TO SHEET VM-2 FOR VIMS VENTING DETAILS AND SHEET VM-3 FOR VIMSVENTING SPECIFICATIONS.2.REFER TO DETAIL 12 FOR SLAB REPAIR DETAILS AFTER INSTALLATION OFCUPOLEX.3.REFER TO DETAIL 13 FOR RAMPS ARE EXISTING DOORWAYS ARE INSTALLED.4.EXISTING BUILDING CONTAINS AN APPROXIMATE 6" CONCRETE SLAB.5.THE PROPOSED AREA FOR THE CUPOLEX WINDI VENTILATED FLOOR AREA ISAPPROXIMATELY 102,000 SQ FT.6.DIA = DIAMETERSCH = SCHEDULETYP. = TYPICALVIMS = VAPOR INTRUSION MITIGATION SYSTEMH&H NO. ATL.001VAPOR INTRUSIONMITIGATION SYSTEMVENTING LAYOUTREVISION 3 | ASI 9AUGUST 2, 2021VM-1VAPOR MITIGATION PLAN PREPARED BY:2923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 GeologyPROFESSIONALAPPROVAL08/02/21BUILDING 2 -NORTH2" SCH 40 PVC TRANSFER PIPES (3 TOTAL)CONNECTING CUPOLEX VOID SPACE(INSTALL THROUGH EXISTING OPENINGS IFPRESENT, TYP)OPEN AIRPORCHOPEN AIRPORCHOPEN AIRPAVILIONOPEN AIRPORCHPROPOSED KESWICKAVENUE EXTENSION(OPEN AIR STREET)OPEN AIR PAVILION2" SCH 40 PVC TRANSFER PIPES (4 TOTAL)CONNECTING CUPOLEX VOID SPACE(INSTALL THROUGH EXISTING OPENINGSIF PRESENT, TYP)EXISTING OPENING IN WALLEXISTING OPENING IN WALLF-1PROPOSED STUD WALL INSTALLEDATOP NEW CONCRETE SLABBUILDING 2 - NORTH - VIMS VENTING LAYOUT1" = 40'VM-11REFER TO DETAIL 7 ON SHEET VM-2FOR PENETRATION DETAILS, SUCHAS BATHROOM PLUMBING, TYP.CAMP NORTH END
201 CAMP RD AND 701 KESWICK AVE
BROWNFIELDS PROJECT #20050-16-060
CHARLOTTE, NORTH CAROLINAPROPOSED UTILITY TRENCH FINISHED WITHCOMPACTED SOIL, OR GRAVEL WITH VAPORBARRIER PRIOR TO CUPOLEX INSTALLATIONPER APPROVAL OF THE DESIGN ENGINEER.SEE DETAIL 14A/B ON SHEET VM-2.CONNECTOR PIPE INSTALLEDABOVE FINISHED TRENCHWITHIN CUPOLEX VOID SPACECREATE AIR TIGHT SEAL ALONG UTILITIESTHAT EXIT THE PERIMETER OF BUILDING.SEE DETAIL 15 ON SHEET VM-2.TEMPORARYMONITORING POINTTEMPORARYMONITORING POINTRECESSED ENTRYWAY FOR SUITE 107INSTALL 20-MIL VAPORBARRIER ALONG NEWCONCRETE SLAB AND WALLS222222" SCH 40 PVC TRANSFER PIPESCONNECTING CUPOLEX VOID SPACE TOGRAVEL LAYER BELOW ENTRYWAY3INSTALL SENSAPHONE SENTINEL INELECTRICAL ROOM. RUN LOW VOLTAGE WIRESTO EACH DIFFERENTIAL PRESSURE SENSOREITHER BELOW CUPOLEX OR OVERHEAD21VM21VM22VM22VM23VM23VM24VM24VM25VM25VM26VM26VM28&10VM28&10VM28&10VM210VM26VM21VM24VM26VM26VM26VM26VM26VM26VM216VM36VM2ORANGE LINE REPRESENTS AREA OFPOTENTIAL SOIL CONTAMINATION. FOLLOWPROVISIONS IN APPROVED EMP FOR THIS AREA8/9VM24" RISER F-4 IN CUPOLEXLAYER WITHIN SUITE 1073" PVC RISER (R-5A) LOCATEDIN CUPOLEX LAYER WITHINSUITE 110 (SEE VM-2A)3" PVC RISER (R-5B) LOCATEDIN CUPOLEX LAYER WITHINSUITE 111 (SEE VM-2A)3" PVC RISER (R-5C) LOCATEDIN CUPOLEX LAYER WITHINSUITE 112 (SEE VM-2A)INSTALL CUPOLEX CUT-OFF CONCRETETURNED DOWN SLAB (MIN 4" WIDE)MONITORING POINTS FOR SUITES 110,111, & 112 TO BE POSITIONED WITHINKITCHEN AREAS OF EACH SUITE4" PVC (PAINTED) PIPEMANIFOLD PIPE ON ROOF3INTERIOR CUPOLEX CUT OFF TURNED DOWN SLAB(SEE SHEET VM-2A)16VM3S:\AAA-Master Projects\ATCO LLC - ATC\ATL-001 - Rite Aid\Task-009 Brownfields\VIMS Design\VIMP Modification - July 2021\VIMP_VENT DRAWINGS_rev 3_072121.dwg, 8/5/2021 8:41:57 AM
CUPOLEX SECTION AT EXTERIOR WALLNTSVM-21CUPOLEX SECTION AT EXISTING OR PROPOSED INTERIOR CUT-OFF WALLNTSVM-24CUPOLEX SECTION AT PROPOSED INTERIOR STUD WALLNTSVM-22CUPOLEX SECTION AT EXISTING INTERIOR COLUMNNTSVM-23TYPICAL PENETRATION THROUGH CUPOLEXNTSVM-27TYPICAL MONITORING POINT DETAILNTSVM-26TYPICAL SLAB REPAIR SECTIONNTSVM-212TYPICAL RAMP AT DOORWAY (IF INSTALLED)NTSVM-213TYPICAL TRANSFER PIPE SECTIONNTSVM-25TYPICAL RISER PIPE CONNECTION TO CUPOLEX AT INTERIOR COLUMNNTSVM-28 F-4 RISER PIPE CONNECTION TO CUPOLEX AT INTERIOR PROPOSED WALLNTSVM-29TYPICAL RISER PIPE AND FAN AT ROOFTOPNTSVM-210 TYPICAL VACUUM ALARM SET-UPNTSVM-211TYPICAL TRENCH BACKFILL DETAIL - OPTION BNTSVM-214BTYPICAL TRENCH BACKFILL DETAIL - OPTION ANTSVM-214AUTILITY PENETRATION AT EXISTING EXTERIOR WALLNTSVM-215H&H NO. ATL.001VAPOR INTRUSIONMITIGATION SYSTEMVENTING DETAILSREVISION 3 | ASI 9AUGUST 2, 2021VM-2VAPOR MITIGATION PLAN PREPARED BY:2923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 GeologyPROFESSIONALAPPROVALBUILDING 2 -NORTHASSISTED BY:CAMP NORTH END
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BROWNFIELDS PROJECT #20050-16-060
CHARLOTTE, NORTH CAROLINACONDITIONS:1. DRAWINGS AND DESIGNS ARE BASED ON DRAWINGS AND DESIGNS PROVIDED BY PONTAROLOENGINEERING INC. AND ARE BEING USED WITH THEIR CONSENT.2. ANY SUBSTITUTION OF MATERIAL IS STRICTLY PROHIBITED AND DOES NOT COMPLY WITH THEDESIGN PROVIDED.3. THE DOCUMENTS DEFINE THE EXTENT AND SCOPE OF THE WORK BUT DO NOT DELEGATEFUNCTIONS OR WORK TO ANY SPECIFIC TRADE.4. THESE DRAWINGS INDICATE PERFORMANCE AND GENERAL ARRANGEMENT OF WORK. THEYARE DIAGRAMIC EXCEPT WHERE SPECIFIC DETAILS ARE GIVEN. THEY MUST BE READ INCONJUNCTION WITH OTHER DESIGN CONSULTANT'S, ARCHITECTURAL, SITE SERVICES,STRUCTURAL, ELECTRICAL, MECHANICAL, LANDSCAPING AND ALL OTHER DIVISION DRAWINGS.5. REFER TO ARCHITECTURAL DRAWINGS FOR DIMENSIONS. DO NOT SCALE THESE DRAWINGS.6. THE GENERAL CONTRACTOR SHALL CHECK AND VERIFY ALL DIMENSIONS BEFORE PROCEEDINGWITH THE WORK. ANY DISCREPANCIES SHALL BE REPORTED TO THE DESIGNER IMMEDIATELY.NOTE:1.REFER TO SHEET VM-1 FOR VIMS VENTING LAYOUT AND SHEET VM-3 FOR VIMSVENTING SPECIFICATIONS.08/02/212S:\AAA-Master Projects\ATCO LLC - ATC\ATL-001 - Rite Aid\Task-009 Brownfields\VIMS Design\VIMP Modification - July 2021\VIMP_VENT DRAWINGS_rev 3_072121.dwg, 8/5/2021 8:42:20 AM
F-5 RISER PIPE AND FAN AT ROOFTOPNTSRISER PIPE CONNECTION TO CUPOLEX AT INTERIOR WALL FOR SUITES 110, 111, & 112NTSVM-2A16VM-2A17F-5 RISER PIPE ELEVATION SCHEMATIC FOR SUITES 110, 111, & 112NTSVM-2A18H&H NO. ATL.001VAPOR INTRUSIONMITIGATION SYSTEMVENTING DETAILSNEW SHEETREVISION 3 | ASI 9AUGUST 2, 2021VM-2AVAPOR MITIGATION PLAN PREPARED BY:2923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 GeologyPROFESSIONALAPPROVALBUILDING 2 -NORTHASSISTED BY:CAMP NORTH END
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CHARLOTTE, NORTH CAROLINANOTE:1.REFER TO SHEET VM-1 FOR VIMS VENTING LAYOUT AND SHEET VM-3 FOR VIMSVENTING SPECIFICATIONS.08/02/21CONDITIONS:1. DRAWINGS AND DESIGNS ARE BASED ON DRAWINGS AND DESIGNS PROVIDED BY PONTAROLOENGINEERING INC. AND ARE BEING USED WITH THEIR CONSENT.2. ANY SUBSTITUTION OF MATERIAL IS STRICTLY PROHIBITED AND DOES NOT COMPLY WITH THEDESIGN PROVIDED.3. THE DOCUMENTS DEFINE THE EXTENT AND SCOPE OF THE WORK BUT DO NOT DELEGATEFUNCTIONS OR WORK TO ANY SPECIFIC TRADE.4. THESE DRAWINGS INDICATE PERFORMANCE AND GENERAL ARRANGEMENT OF WORK. THEYARE DIAGRAMIC EXCEPT WHERE SPECIFIC DETAILS ARE GIVEN. THEY MUST BE READ INCONJUNCTION WITH OTHER DESIGN CONSULTANT'S, ARCHITECTURAL, SITE SERVICES,STRUCTURAL, ELECTRICAL, MECHANICAL, LANDSCAPING AND ALL OTHER DIVISION DRAWINGS.5. REFER TO ARCHITECTURAL DRAWINGS FOR DIMENSIONS. DO NOT SCALE THESE DRAWINGS.6. THE GENERAL CONTRACTOR SHALL CHECK AND VERIFY ALL DIMENSIONS BEFORE PROCEEDINGWITH THE WORK. ANY DISCREPANCIES SHALL BE REPORTED TO THE DESIGNER IMMEDIATELY.S:\AAA-Master Projects\ATCO LLC - ATC\ATL-001 - Rite Aid\Task-009 Brownfields\VIMS Design\VIMP Modification - July 2021\VIMP_VENT DRAWINGS_rev 3_072121.dwg, 8/5/2021 8:42:43 AM
VIMS AT RECESSED ENTRYWAY AT SUITE 107NTSVM-316H&H NO. ATL.001VAPOR INTRUSIONMITIGATION SYSTEMVENTINGSPECIFICATIONSREVISION 3 | ASI 9AUGUST 2, 2021VM-3VAPOR MITIGATION PLAN PREPARED BY:2923 South Tryon Street-Suite 100Charlotte, North Carolina 28203704-586-0007(p) 704-586-0373(f)License # C-1269 / #C-245 GeologyPROFESSIONALAPPROVALISSUED FOR DEQ SUBMITTALBUILDING 2 -NORTHASSISTED BY:A. GENERALB. INTENT AND BASIS - ACTIVE VENTING DESIGNC. VENTING SYSTEM RISER PIPESH. SPECIAL INSPECTIONS AND TESTSI. SUBMITTALSJ. VENTING SYSTEM INSPECTION AND MAINTENANCE1. THE PLACEMENT OF THE CUPOLEX® FORMS, RISER PIPE STUBS, INLET PIPE STUBS, UTILITYPENETRATION BOOTS, AND INTERNAL WALL FOOTING AIR TRANSFER PIPES SHALL BE INSPECTEDBY THE DESIGN ENGINEER PRIOR TO POURING OF CONCRETE. THE RISER PIPES, FANINSTALLATION, AND ALARM INSTALLATION SHALL BE INSPECTED BY THE DESIGN ENGINEER PRIORTO OPERATION.2.THE CONTRACTOR SHALL PROVIDE THE DESIGN ENGINEER OR THE APPROVED CONTRACTOR ATLEAST 48 HOURS NOTICE BEFORE REQUESTED INSPECTION TIMES IN ORDER FOR THE INSPECTORTO NOTIFY NC DEQ OF THE UPCOMING INSPECTION.3. THE CONTRACTOR SHALL ARRANGE FOR THE DESIGN ENGINEER OR APPROVED CONTRACTOR TOPERFORM A VACUUM TEST ON THE COMPLETED CUPOLEX® FLOOR SLAB AFTER ALL JOINT,PENETRATION, CONDUIT, AND OTHER SEALING REQUIRED BY THESE DESIGNS HAS BEENCOMPLETED. THE CONTRACTOR SHALL PROMPTLY SEAL ANY LEAKS IN THE FLOOR SLABIDENTIFIED BY THE VACUUM TEST. THE RESULTS OF THE VACUUM INFLUENCE TEST WILL ALSO BEUSED BY THE DESIGN ENGINEER TO VERIFY THE FAN OR BLOWER TO BE INSTALLED ON THEVERTICAL RISER PIPE SHOWN IN THESE DRAWINGS IS ADEQUATE, OR TO RECOMMEND ADIFFERENT TYPE OF FAN BLOWER TO INSTALL, PER APPROVAL OF DEQ. THE VACUUM INFLUENCETEST SHALL BE CONDUCTED FROM THE ROOFTOP LOCATION WITH THE INSTALLED PROPOSEDVACUUM FANS AS DEPICTED IN DETAIL 10/VM-2.4. THE CONTRACTOR SHALL ARRANGE FOR THE DESIGN ENGINEER OR APPROVED CONTRACTOR TOCHECK THE OPERATION OF ALL VENTING SYSTEM ALARMS AND FAN OPERATION, BEFORE THEBUILDING IS OCCUPIED.1. SHOP DRAWINGS, MATERIAL SPECIFICATIONS, INSTALLATION INSTRUCTIONS, OPERATION ANDMAINTENANCE INFORMATION, AND WARRANTIES SHALL BE SUBMITTED TO THE DESIGNENGINEER OR APPROVED CONTRACTOR PRIOR TO FABRICATION, CONSTRUCTION, AND/ORINSTALLATION, AS APPLICABLE:a.RISER PIPE SPECIFICATIONS AND LOCATIONS (INCLUDING ACTIVE FAN LOCATION)b.VAPORBLOCK PLUS VAPOR BARRIER (VBP20) AND TAPES (OR APPROVED EQUIVALENT)c.VACUUM MONITORS/ALARMS AND LOCATIONSd.ELECTRIC VACUUM FANSe.SAFETY DATA SHEETS FOR ALL MATERIALS USED FOR CONSTRUCTION TO VERIFY NOPCE OR TCE ARE PRESENT WITHIN THE PRODUCTS.2. SHOP DRAWINGS AND OTHER SUBMITTALS ARE REVIEWED BY THE DESIGN ENGINEER ORAPPROVED CONTRACTOR ONLY FOR GENERAL COMPLIANCE WITH THESE VENTING DRAWINGS.RESPONSIBILITY FOR CORRECTNESS SHALL REST WITH THE CONTRACTOR. IF THERE ISCONFLICT BETWEEN SHOP AND THESE DRAWINGS OR SPECIFICATIONS THESE DRAWINGSAND/OR SPECIFICATIONS SHALL TAKE PRECEDENCE. REQUESTS TO PERFORM MODIFICATIONSSHALL BE SUBMITTED SEPARATELY FOR THE DESIGN ENGINEER'S REVIEW.1. THE OWNER, THROUGH CONTRACT WITH A PROFESSIONAL ENGINEER AS WARRANTED, SHALLBE RESPONSIBLE FOR THE ROUTINE OPERATION, INSPECTION, CALIBRATION, AND MONITORINGOF THE VENTING SYSTEM ACCORDING TO MANUFACTURER RECOMMENDATIONS AND THEPROVISIONS AS DETAILED IN THE VAPOR INTRUSION MITIGATION PLAN INCLUDING:a.INSPECTION AND REPAIR OF SEALS IN THE SLAB, AND SEALING OF ANY NEW CRACKS OROPENINGS IN THE SLAB THAT OCCUR FOR ANY REASON;b.NOTIFICATION TO TENANTS AND CONTRACTORS OF THE PRESENCE AND FUNCTION OF THEVIMS, AND TO INSTRUCT TENANTS AND CONTRACTS TO NOTIFY THE OWNER OF PROPOSEDACTIVITIES THAT DAMAGE OR COULD IMPACT THE VIMS;c.NOTIFICATION TO TENANTS AND CONTRACTORS OF THE DISCHARGE EXHAUSTREQUIREMENTS; ANDd.IF THE SYSTEM MONITOR (SENSAPHONE SENTINEL) ALARM SOUNDS, IMPLEMENT ACTIONSAS OUTLINED IN THE VAPOR INTRUSION MITIGATION PLAN FOR EVALUATION OF THE ALARMAND SUBSEQUENT REPAIRS.2. THE OWNER SHALL DESIGNATE A PERSON OR DEPARTMENT RESPONSIBLE FOR THEOPERATION, INSPECTION, MONITORING, AND AS NECESSARY, REPAIR OF THE VENTING SYSTEMAND COORDINATION WITH A NORTH CAROLINA PROFESSIONAL ENGINEER AS DESCRIBED INTHESE DRAWINGS AND ASSOCIATED VAPOR INTRUSION MITIGATION PLAN. THIS PERSON SHALLBE FAMILIAR WITH THESE DRAWINGS AND THE OPERATION OF THE FANS AND MONITORINGEQUIPMENT.1.THE VENT RISER PIPE SHALL PENETRATE THE CUPOLEX FLOOR SLAB AT THE LOCATION SHOWNON DRAWING VM-1 AND RISE VERTICALLY AND EXIT THE BUILDING AS SHOWN ON DRAWINGVM-2.2.THE RISER PIPE SHALL BE SCHEDULE 40 PVC WITH CLASS A FIRE RATING AND FLAME/SMOKEINDEX OF AT MOST 25/50 BY ASTM METHOD E84 OR CAST IRON MAY BE USED INSTEAD OF PVC.CAST IRON PIPE (CIP) SHALL BE HUBLESS (NO HUB).3.ALL PVC PIPING CONNECTIONS SHALL BE SOLVENT CEMENTED AND PERMANENTLY SEALEDUSING A PRIMER MEETING THE REQUIREMENTS OF ASTM F656 AND A SOLVENT MEETING THEREQUIREMENTS OF ASTM D2564. THE SOLVENT SHALL BE LOW VOC AND CONTAIN NO PCE ORTCE. JOINTS SHALL BE MADE WHILE THE SOLVENT IS WET AND SHALL BE IN ACCORDANCE WITHASTM D2855 AND ASTM F402. ALL HUBLESS CAST IRON CONNECTIONS SHALL BE MADE WITHSHIELDED HUBLESS COUPLINGS MANUFACTURED IN ACCORDANCE WITH CISPI 310 OR ASTM C1277 AND CERTIFIED BY NSF® INTERNATIONAL.4.THE RISER PIPE SHALL BE INSTALLED IN A SECURE AND PLUMB MANNER IN THE CUPOLEX®FORMS PRIOR TO POURING OF THE CONCRETE FLOOR SLAB. THE RISER PIPE STUB MUST BEMARKED OR LABELED ABOVE THE FLOOR.5.THE RISER PIPE SHALL BE INSTALLED IN COMPLIANCE WITH THE MECHANICAL AND PLUMBINGDRAWINGS FOR THIS PROJECT INCLUDING, BUT NOT LIMITED TO, ANY PIPE WRAP AND FIRE STOPREQUIREMENTS, ALL APPLICABLE BUILDING AND FIRE CODES, AND SHALL BE TIED-OFF (I.E.,VERTICALLY SUPPORTED) AT EACH FLOOR.6.ALL VERTICAL PIPE RUNS SHALL BE SUPPORTED AT LEAST EVERY 10 FEET AND AT EVERYPENETRATION THROUGH SLABS, CEILINGS, OR ROOF DECKS.7.HORIZONTAL RUNS SHOULD NOT BE USED FOR ABOVE GRADE VENT PIPING UNLESS APPROVEDBY THE DESIGN ENGINEER. IF PRESENT, HORIZONTAL RUNS SHALL BE SUPPORTED AT LEASTEVERY 6 FEET WITH CODE APPROVED HANGERS. ALL HORIZONTAL RUNS SHALL BE SUPPORTEDWITHIN TWO FEET OF EACH FITTING.1.THE INTENT OF THIS DESIGN IS TO USE CUPOLEX® WINDI H.5 CONCRETE FORMING SYSTEMS TOVENT THE VOID SPACE (BELOW THE FLOOR SLAB) AT A RATE SUFFICIENT TO PREVENT VOLATILEORGANIC COMPOUNDS (VOCS) FROM INTRUDING INTO THE BUILDING TO THE PROTECT PUBLICHEALTH FOR OCCUPANTS OF THE BUILDING.2.VENTING OF THE CUPOLEX® VOID SPACE WILL BE PERFORMED BY ACTIVE VENTING USING FOUR(4) RISER PIPES WITH ELECTRIC AMG LEGEND BLOWER FANS TO VENT THE RISER PIPES (ASSHOWN ON DRAWING VM-2) SUCH THAT THE FAN OR BLOWER WILL PULL AIR FROM THESUB-SLAB VOID SPACE THROUGH ITS VERTICAL RISER PIPE AND CREATE A RELATIVE VACUUM INTHE SUB-SLAB VOID SPACE COMPARED TO INDOOR AIR. A MINIMUM DIFFERENTIAL PRESSURE OF4 PASCALS, AS DEQ, SHALL BE ACHIEVED ACROSS THE SLAB. BASED ON THE INFLUENCETESTING RESULTS, AN ALTERNATIVE FAN MAY BE SELECTED UPON APPROVAL OF THE ENGINEERAND NC DEQ.3.A LOW AIR PERMEABILITY FLOOR WILL BE ACCOMPLISHED BY THE INTERLOCKING CUPOLEXFORMS AND THE CONCRETE SLAB, SEALS PLACED AROUND PIPE PENETRATIONS OF THECUPOLEX FORMS AND SLAB, AND BY PROPERLY SEALING JOINTS, PENETRATIONS, AND OTHERPOTENTIAL AIR FLOW PATHWAYS IN THE SLAB.4.PROPOSED UTILITY TRENCHES INSTALLED WITHIN EXISTING CONCRETE SLAB SHALL BEFINISHED WITH COMPACTED SOILS, OR GRAVEL WITH A 20-MIL VAPOR BARRIER INSTALLEDABOVE THE TRENCHES, AND SET FLUSH WITH SURROUNDING FLOOR SERVICE PRIOR TOINSTALLATION OF THE CUPOLEX FORMS. IF VAPOR BARRIER IS USED, THE VAPOR BARRIERSHALL BE RAVEN INDUSTRIES VAPOR BLOCK 20 AND SEALED TO THE SURROUNDING CONCRETEPER MANUFACTURER INSTRUCTIONS. THE UTILITY TRENCH INSTALLATIONS AND BACKFILLSHALL BE APPROVED BY THE DESIGN ENGINEER AND STRUCTURAL ENGINEER PRIOR TOINSTALLATION THE CUPOLEX FORMS.5.THE RECESSED ENTRY WAY IN SUITE 107 SHALL RECEIVE A MINIMUM OF 4-INCHES OF CLEAN(WASHED) 57 STONE AND 20-MIL VAPOR BARRIER (SEE SPEC C-11) BELOW THE NEW CONCRETESLAB. THE VAPOR BARRIER SHALL BE INSTALLED BETWEEN THE NEW CONCRETE SLAB ANDCLEAN 57 STONE, AND BETWEEN THE CONCRETE WALLS AND EXISTING SOILS (SEE DETAIL16/VM-3).1.THE WORK DEPICTED ON THESE DRAWINGS SHALL BE PERFORMED BY AN EXPERIENCEDCONTRACTOR WHO HAS A WORKING KNOWLEDGE OF APPLICABLE CODE STANDARDS ANDINDUSTRY ACCEPTED STANDARD GOOD PRACTICE. NOT EVERY CONDITION OR ELEMENT ISOR CAN BE EXPLICITLY SHOWN ON THESE DRAWINGS; THEREFORE, THE CONTRACTORSHALL USE INDUSTRY ACCEPTED STANDARD GOOD PRACTICE FOR MISCELLANEOUS WORKNOT EXPLICITLY SHOWN.2.ALL WORK SHALL BE IN COMPLIANCE WITH FEDERAL, STATE, AND LOCAL BUILDING, FIRE,AND ELECTRICAL CODES.3.THE CONTRACTOR SHALL CONFER WITH AND SEEK THE APPROVAL OF THE DESIGNENGINEER CERTIFIED THE VAPOR INTRUSION MITIGATION SYSTEM (DESIGN ENGINEER) FORTHE FINAL LOCATIONS OF VENTING SYSTEM COMPONENTS.4.SEE STRUCTURAL PLANS FOR ALL STRUCTURAL CONCRETE DIMENSIONS AND DETAILS. SEEARCHITECTURAL PLANS FOR ALL WALL, CEILING, AND ROOF DIMENSION DETAILS.5.ALL INSPECTIONS REQUIRED BY BUILDING CODES AND/OR THESE DRAWINGS SHALL BEPROVIDED BY DESIGN ENGINEER, OR DESIGNEE, AND/OR THE BUILDING DEPARTMENT ASAPPLICABLE.6.ALL MATERIALS OR PRODUCTS USED BY THE CONTRACTORS DURING CONSTRUCTION OFTHE BUILDING SHALL NOT CONTAIN THE COMPOUNDS TETRACHLOROETHENE (PCE) ORTRICHLOROETHENE (TCE). THE CONSTRUCTION CONTRACTOR SHALL SUPPLY THE DESIGNENGINEER SAFETY DATA SHEETS (SDS) FOR ALL MATERIALS USED FOR CONSTRUCTION.7.CHANGES OR MODIFICATIONS TO THE SYSTEM DURING CONSTRUCTION SHALL BEAPPROVED BY THE DESIGN ENGINEER AND THE NORTH CAROLINA DEPARTMENT OFENVIRONMENTAL QUALITY (DEQ) BROWNFIELDS PROGRAM. AFTER COMPLETION ANDCERTIFICATION OF THE VIMS BY DEQ PROPOSED MODIFICATIONS OR CHANGES TO THESYSTEM SHALL BE PROVIDED TO THE DESIGN ENGINEER AND DEQ FOR APPROVAL. ALLCHANGES OR MODIFICATIONS MUST BE INSPECTED BY A NORTH CAROLINA PROFESSIONALENGINEER, OR THE ENGINEER'S DESIGNEE, EXCEPT FOR STANDARD MAINTENANCEACTIVITIES (I.E. FAN REPLACEMENT). IF SYSTEM REPAIRS ARE REQUIRED, THE REPAIRSSHALL BE IMMEDIATELY CONDUCTED AND THEN REPORTED TO A DESIGN ENGINEER ANDDEQ FOR FOLLOW-UP INSPECTION AND SYSTEM TESTING. MORE DETAILS ARE PROVIDED INTHE VAPOR INTRUSION MITIGATION PLAN.1.THE IN-LINE FAN ON THE RISER PIPE SHALL BE INSTALLED AS CLOSE AS PRACTICABLE TO THEPOINT OF EXIT FROM THE BUILDING WITH THE DISCHARGE END INSTALLED PER NOTE E.3BELOW.. SEE SHEET VM-1 FOR RISER PIPE LOCATION AND SHEET VM-2 FOR VENT RISER PIPESECTION. THE FAN AREA MUST BE ACCESSIBLE FOR FUTURE FAN MAINTENANCE AND/ORREPLACEMENT AS REQUIRED.2.PROVIDE 120 VOLT ELECTRIC SERVICE WITH A DEDICATED CIRCUIT BREAKER WITHIN FIVE (5)FEET OF THE FAN LOCATION.3.THE EXHAUST POINT SHALL BE AT LEAST 15 FEET HORIZONTALLY FROM ANY HVAC AIR INTAKES,CONGREGATION AREAS, OR OTHER OPENINGS INTO THE BUILDING. THE RISER EXHAUST POINTSHALL BE AT LEAST 3 FEET ABOVE THE BUILDING ROOF LINE, OR 3 FEET ABOVE NEARBYPARAPETS OR TOP OF CLERESTORIES THAT ARE WITHIN 15-FT OF THE DISCHARGE LOCATION.THE BUILDING PROPERTY MANAGER SHALL BE RESPONSIBLE TO ENSURE FUTURE AIR INTAKESOR OTHER OPENINGS ARE NOT INSTALLED WITHIN THE 15 FEET DISTANCE TO THE RISEREXHAUST POINTS.4.A VARMINT GUARD SHALL BE INSTALLED ON THE TOP OF THE RISER PIPE AS SPECIFIED ONSHEET VM-2.5.A LABEL SHALL BE AFFIXED NEAR THE ELETRIC FAN WITH "VAPOR MITIGATION SYSTEM -CONTACT MAINTENANCE IF FAN IS NOT OPERATING". OTHER SIMILAR LANGUAGE MAY BE USEDFOR THE LABELS PER APPROVAL OF THE ENGINEER.D. VENTING SYSTEM AIR TRANSFER PIPESE. ACTIVE VENTING SYSTEM FANS OR BLOWERSF. ACTIVE VENTING SYSTEM MONITORS AND ALARMSG. SEALING OF JOINTS, CRACKS, AND OPENINGS IN THE SLAB1.A SENSAPHONE DIFFERENTIAL PRESSURE SENSOR SHALL BE INSTALLED AT EACH RISER PIPEAND CONNECTED TO A CENTRALIZED SENSAPHONE SENTINEL REMOTE MONITORING DEVICE, ORSIMILAR ALARM SYSTEM APPROVED BY THE DESIGN ENGINEER, AS SHOWN ON SHEETS VM-1AND VM-2. THE CENTRALIZED SENSAPHONE SENTINEL DEVICE SHALL BE INSTALLED IN ASUITABLE MONITORED LOCATION TO BE IDENTIFIED BY THE OWNER OR ARCHITECT. THESENSAPHONE SENTINEL SHALL BE NO MORE THAN 700 FT FROM EACH DIFFERENTIAL PRESSURESENSOR.2.PROVIDE 120 VOLT ELECTRIC SERVICE AT AN ELECTRICAL JUNCTION BOX WITHIN FIVE (5) FEETOF THE DIFFERENTIAL PRESSURE SENSOR. A 24 V DC POWER SUPPLY ACCESSORY SHALL BEINSTALLED AT THE OUTLET TO PROVIDE POWER TO THE DIFFERENTIAL PRESSURE SENSOR.3.THE ALARM SYSTEM SHALL CONSIST OF VISUAL AND/OR AUDIBLE SIGNALS TO NOTIFYOCCUPANTS IF VACUUM LEVELS INDICATE THE ACTIVE FAN OR BLOWER IS NOT OPERATING.4.ALARMS SHALL BE SET TO BE ACTIVATED WHEN VACUUM LEVELS IN THE RISER PIPE DROPBELOW 0.25 INCHES OF WATER COLUMN, OR OTHERWISE APPROVED BY THE DESIGN ENGINEER.5.LOW-VACUUM LEVEL ALARMS SHOULD BE READILY VISIBLE TO BUILDING STAFF.6.A LABEL SHALL BE AFFIXED NEAR THE VACUUM ALARMS WITH "VAPOR MITIGATION SYSTEM -CONTACT MAINTENANCE IF ALARM IS ACTIVATED". OTHER SIMILAR LANGUAGE MAY BE USEDFOR THE LABELS PER APPROVAL OF THE ENGINEER.7.SPECIFIC ACTIONS TO BE TAKEN IN THE EVENT OF TRIGGERED ALARMS ARE DETAILED IN THEVAPOR INTRUSION MITIGATION PLAN AND WILL BE INCLUDED IN VIMS INSTALLATION REPORTUPON COMPLETION OF THE VIMS.1.THE INTENT OF THIS WORK IS TO MINIMIZE THE LEAKAGE OF VAPOR BETWEEN THE VOIDSPACE AND THE INDOOR AIR SPACE OF THE BUILDING.2.ALL FLOOR SLAB PENETRATIONS INCLUDING BUT NOT LIMITED TO EXPANSION JOINTS,CONTROL JOINTS, CONSTRUCTION JOINTS, ISOLATION JOINTS, OPEN CRACKS IN THECUPOLEX® FLOOR SLAB, PLUMBING AND ELECTRICAL CONDUITS, VENTING SYSTEM PIPES,ETC. SHALL BE SEALED USING URETHANE CAULK ACCORDING TO THE MANUFACTURER'SRECOMMENDATIONS. A LOW-VOC URETHANE CAULK SHALL BE USED THAT CONTAINS NOPCE OR TCE.3.THE ANNULUS OF ALL UTILITIES, PIPES, AND OTHER CONDUITS THAT PENETRATE THECUPOLEX® FLOOR SLAB SHALL BE SEALED WITH A URETHANE CAULK ACCORDING TOMANUFACTURER'S RECOMMENDATIONS AND IN A MANNER MEETING APPLICABLE FIRECODES. A LOW-VOC URETHANE CAULK SHALL BE USED THAT CONTAINS NO PCE OR TCE.4.ALL OPENINGS IN THE CUPOLEX® FLOOR SLAB, SUCH AS OPENINGS CREATED BY PLUMBINGBOX OUTS FOR BATHROOM FIXTURES, SHALL BE SEALED USING SUITABLE EXPANDING FOAMSEALANTS OR URETHANE CAULK. LOW-VOC FOAM SEALANTS AND URETHANE CAULK SHALLBE USED THAT CONTAIN NO PCE OR TCE.5.URETHANE CAULK OR SEALANT SHALL COMPLY WITH FEDERAL SPECIFICATION TT-5-00230C(E.G.PECORA CORPORATION'S DYNATROL1-Xl.OR TREMCO'S VULKEM 116)AND FIRE CODES AS APPLICABLE.6.ALL THE ABOVE SEALANT APPLICATIONS WILL BE MADE AT THE FINISHED CONCRETEFLOOR SURFACE.7.NO HOLLOW FORMS OR OPEN CONDUITS SHALL BE LEFT IN PLACE THAT CONNECT THECUPOLEX VOID SPACE OR SUB-SLAB ANNULAR SPACE TO THE INTERIOR OF THE BUILDING.8.THE DESIGN ENGINEER, OR DESIGNEE, SHALL INSPECT THE SEALANTS PRIOR TO BEINGCOVERED WITH FLOORING OR OTHER MATERIALS TO VERIFY COMPLIANCE WITH THESESPECIFICATIONS.1.AIR TRANSFER PIPES SHALL BE INSTALLED AT INTERVALS THROUGH EXITING WALLS, EXISTINGVOIDS, OR THICKENED SLAB AREAS TO CONNECT THE VOID SPACES OF THE CUPOLEX FLOOR ONEITHER SIDE OF THE WALLS OR THICKENED SLABS. TRANSFER PIPES SHALL BE INSTALLED, ASNEEDED, TO CONNECT ALL VOID SPACES, AND DOCUMENTED IN FIELD INSPECTION LOGS.TRANSFER PIPES SHALL BE INSTALLED TO CONNECT ISOLATED AREAS OF THE VOID SPACE TOOTHER AREAS AND, AS NEEDED, TO ALLOW MORE EFFICIENT MOVEMENT OF AIR BETWEENAREAS OF THE FLOOR.2.AIR TRANSFER PIPES SHALL BE PROVIDED AT INTERIOR WALLS, FOOTINGS, GRADE BEAMS,THICKENED SLABS, OR OTHER OBSTRUCTIONS TO SUB-SLAB AIR MOVEMENT AS SHOWN ON THEDETAILS ON DRAWING VM-2.3.AIR TRANSFER PIPES SHALL BE MADE OF 2-INCH DIAMETER SCHEDULE 40 PVC OR OTHERSUITABLE PIPE MATERIAL SPECIFIED BY THE STRUCTURAL ENGINEER AND DESIGN ENGINEER.4.ALL AIR TRANSFER PIPE LOCATIONS SHALL BE APPROVED BY THE STRUCTURAL ENGINEERPRIOR TO INSTALLATION TO ENSURE THAT THE INTEGRITY OF THE FOOTING/BEAM OR OTHERSTRUCTURES IS NOT IMPACTED.5.IF A SECTION OF CUPOLEX FLOORING IS CUT OR REMOVED, IT MUST BE REPAIRED WITHHORIZONTAL AIR TRANSFER PIPES PLACED THROUGH THE REPAIR ITSELF, AS SHOWN ON THEDETAILS ON SHEET VM-2, TO CONNECT THE VOID SPACES ON EITHER SIDE OF THE REPAIR TOPREVENT THE ISOLATION OF ANY VOID SPACES. ALL PENETRATIONS TO THE CUPOLEXFLOORING DURING AND AFTER INSTALLATION SHALL BE APPROVED AND INSPECTED BY THEDESIGN ENGINEER.CONDITIONS:1. DRAWINGS AND DESIGNS ARE BASED ON DRAWINGS AND DESIGNS PROVIDED BY PONTAROLO ENGINEERING INC.AND ARE BEING USED WITH THEIR CONSENT.2. ANY SUBSTITUTION OF MATERIAL IS STRICTLY PROHIBITED AND DOES NOT COMPLY WITH THE DESIGN PROVIDED.3. THE DOCUMENTS DEFINE THE EXTENT AND SCOPE OF THE WORK BUT DO NOT DELEGATE FUNCTIONS OR WORKTO ANY SPECIFIC TRADE.4. THESE DRAWINGS INDICATE PERFORMANCE AND GENERAL ARRANGEMENT OF WORK. THEY ARE DIAGRAMICEXCEPT WHERE SPECIFIC DETAILS ARE GIVEN. THEY MUST BE READ IN CONJUNCTION WITH OTHER DESIGNCONSULTANT'S, ARCHITECTURAL, SITE SERVICES, STRUCTURAL, ELECTRICAL, MECHANICAL, LANDSCAPING AND ALLOTHER DIVISION DRAWINGS.5. REFER TO ARCHITECTURAL DRAWINGS FOR DIMENSIONS. DO NOT SCALE THESE DRAWINGS.6. THE GENERAL CONTRACTOR SHALL CHECK AND VERIFY ALL DIMENSIONS BEFORE PROCEEDING WITH THE WORK.ANY DISCREPANCIES SHALL BE REPORTED TO THE DESIGN ENGINEER IMMEDIATELY.CAMP NORTH END
201 CAMP RD AND 701 KESWICK AVE
BROWNFIELDS PROJECT #20050-16-060
CHARLOTTE, NORTH CAROLINANOTE:1.REFER TO SHEET VM-1 FOR VIMS VENTING LAYOUT AND SHEET VM-2 FOR VIMSVENTING DETAILS.08/02/21C. VENTING SYSTEM RISER PIPES (CONTINUED)8.HORIZONTAL PIPE RUNS, IF PRESENT, SHALL SLOPE A MINIMUM OF 1/8" PER FOOT (1%) RUN TOENSURE THAT ANY CONDENSATION OR MOISTURE IN THE PIPE WILL DRAIN TOWARD THE VERTICAL RISER AND FLOOR PENETRATION.9.THE TOTAL LENGTH OF PIPE AND NUMBER OF FITTINGS BETWEEN THE FLOOR PENETRATIONPOINT AND THE EXHAUST POINT SHALL BE MINIMIZED TO THE EXTENT PRACTICAL TO REDUCEFRICTION LOSSES IN THE PIPE.10.EACH VERTICAL AND HORIZONTAL RUN OF ACCESSIBLE RISER SHALL BE CLEARLY AND PERMANENTLY LABELED AT LEAST EVERY TEN (10) FEET WITH "VAPOR MITIGATION SYSTEM -CONTACT MAINTENANCE". A LABEL SHALL BE AFFIXED NEAR THE VACUUM ALARMS WITH "VAPOR MITIGATION SYSTEM - CONTACT MAINTENANCE IF ALARM IS ACTIVATED". OTHER SIMILAR LANGUAGE MAY BE USED FOR THE LABELS PER APPROVAL OF THE ENGINEER.11. VAPOR BARRIER USED FOR SLAB REPAIRS, NEW CONCRETE, OR UNDER RAMPS AT DOORWAYSSHALL BE RAVEN INDUSTRIES 20-MIL VAPOR BLOCK PLUS, OR EQUIVALENT VAPOR BARRIERAPPROVED BY THE DESIGN ENGINEER AND NC DEQ.22S:\AAA-Master Projects\ATCO LLC - ATC\ATL-001 - Rite Aid\Task-009 Brownfields\VIMS Design\VIMP Modification - July 2021\VIMP_VENT DRAWINGS_rev 3_072121.dwg, 8/5/2021 8:43:01 AM