09058 Midtown Mall Vapor Workplan-Approval

North Carolina Department of Environment and Natural Resources
Dexter R. Matthews, Director Division of Waste Management Michael F. Easley, Governor
William G. Ross Jr., Secretary
1646 Mail Service Center, Raleigh, North Carolina 27699-1646
Phone [phone] \ FAX [phone] \ Internet http://wastenotnc.org
An Equal Opportunity / Affirmative Action Employer – Printed on Dual Purpose Recycled Paper
January 7, 2007

Sent Via E-mail and USPS

Mr. Charles E. Teal, CPA
Chief Operating Officer
Pappas Properties, LLC
6000 Fairview Rpad, Suite 125
Charlotte, NC 28210
[e-mail]

Subject: Approval for Underslab Vent Piping System
Midtown Square Mall
401 South Independence Blvd and 431 South Kings Dr.
Charlotte, Mecklenburg County
Brownfields Project Number 09058-05-60

Dear Mr. Teal:

On Friday, January 5, 2007, I received an electronic version of the revised Midtown Square Mall Underslab Vent Piping
System plans and specifications. These plans were submitted in accordance with the draft Notice of Brownfields Property
Land Use Restriction Number 2. The plan is approved for construction with the following comments:

1. Section 3.C.6.a the fan discharge height should be a minimum of 24 inches
2. Section 3.C.9 Verify that you want to require concrete slabs to be installed for any tenant within the building. In
our initial conversations you were requesting a delay for the commercial retail units.
3. Removed cross-out words

Please forward me final hard copy of the finalized plans and specification. Be advised that this approval from the
Brownfields Program does not waive any applicable requirement to obtain any necessary permits, licenses or
certifications for the above listed activities nor does it waive any requirement to comply with applicable law for such
activities. If you have any questions or comments, please contact me at 704/661-0330.

Sincerely,

Carolyn Minnich
Carolyn Minnich
Brownfields Project Manager
Division of Waste Management

ec: Bruce Nicholson, DENR
Greg Icenhour, Shield Environmental
Fritz Rehkopf, Pappas Properties
Carol Jones Van Buren, Esq., KC
JANUARY 8, 2007 SECTION 02750 - 1
CHARLOTTE MIDTOWN SOI - BUILDING A - 204173 UNDERSLAB VENT PIPING SYSTEM

SECTION 02750

UNDERSLAB VENT PIPING SYSTEM

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General Conditions,
Division 1 - GENERAL REQUIREMENTS, and other applicable specification sections in the Project
Manual apply to the work specified in this Section.

1.2 SUMMARY

A. Scope: Provide labor, material, equipment, related services, and supervision required, including, but
not limited to, manufacturing, fabrication, erection, and installation for underslab vent piping system
as required for the complete performance of the work, and as shown on the Drawings and as herein
specified.

B. Section Includes: The work specified in this Section includes, but shall not be limited to, an
underslab vent piping system as specified herein and as indicated on the Drawings, including, but
not limited to, the following:
1. Gravel bed.
2. Perforated vent piping within gravel layer.
3. Vapor retarder.
4. Unperforated vertical riser within the building envelope.
5. Motorized exhaust/vent fans.
6. Accessories and fittings as required.

1.3 REFERENCES

A. The publications listed below form a part of this Specification to the extent referenced. The
publications are referred to in the text by the basic designation only.

B. The edition/revision of the referenced publications shall be the latest date as of the date of the
Contract Documents, unless otherwise specified.

C. ASTM (ASTM:
1. ASTM D 448, "Standard Classification for Sizes of Aggregate for Road and Bridge
Construction."
2. ASTM D 2729, "Standard Specification for Poly (Vinyl Chloride) (PVC) Sewer Pipe and Fittings."
3. ASTM D 4397, "Standard Specification for Polyethylene Sheeting for Construction, Industrial,
and Agricultural Applications."
4. ASTM E 1643, "Standard Practice for Installation of Water Vapor Retarders Used in Contact
with Earth or Granular Fill Under Concrete Slabs."
5. ASTM E 1745, “Standard Specification for Plastic Water Vapor Retarders Used in Contact with
Soil or Granular Fill Under Concrete Slabs.”

D. Environmental Protection Agency (EPA):
1. EPA 402-K-01-002, “Building Radon Out: A Step-by-Step Guide On How to Build
Radon-Resistant Homes.”

SECTION 02750 - 2 REVISED JANUARY 8, 2007
UNDERSLAB VENT PIPING SYSTEM CHARLOTTE MIDTOWN SOI - BUILDING A - 204173

1.4 SUBMITTALS

A. General: See Section 01300 - SUBMITTALS.

B. Product Data: Submit product data showing material proposed. Submit sufficient information to
determine compliance with the Drawings and Specifications.

C. Shop Drawings: Submit shop drawings for each product and accessory required. Include
information not fully detailed in manufacturer’s standard product data.

D. Qualification Data: Submit qualification data for firms and persons specified in Quality Assurance
Article to demonstrate their capabilities and experience. Include lists of completed projects with
project names and addresses, names of architects and owners, and other information specified.

1.5 QUALITY ASSURANCE

A. Qualifications:
1. Manufacturer Qualifications: Manufacturer shall be a firm engaged in the manufacture of
underslab vent piping system of types and sizes required, and whose products have been in
satisfactory use in similar service for a minimum of five years.
2. Installer Qualifications: Installer shall be a firm that shall have a minimum of five years of
successful installation experience with projects utilizing underslab vent piping system similar in
type and scope to that required for this Project.

B. Regulatory Requirements: Comply with applicable requirements of the laws, codes, ordinances,
and regulations of Federal, State, and local authorities having jurisdiction. Obtain necessary
approvals from such authorities.

C. Standards: Comply with applicable requirements of EPA 402-K-01-002.

D. Pre-Installation Conference: Conduct pre-installation conference in accordance with
Section 01200 - PROJECT MEETINGS. Prior to commencing the installation, meet at the Project
site to review the material selections, installation procedures, and coordination with other trades.
Pre-installation conference shall include, but shall not be limited to, the Contractor, the Installer,
manufacturer’s representatives, and any trade that requires coordination with the work. Date and
time of the pre-installation conference shall be acceptable to the Owner and the Architect.

E. Certification: The Owner will be responsible for the certification of the system and will employ either
the engineer of record or a third party commissioning agent.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Deliver materials to the Project site in supplier’s or manufacturer’s original wrappings and containers,
labeled with supplier’s or manufacturer’s name, material or product brand name, and lot number, if
any.

B. Store materials in their original, undamaged packages and containers, inside a well-ventilated area
protected from weather, moisture, soiling, extreme temperatures, and humidity.

JANUARY 8, 2007 SECTION 02750 - 3
CHARLOTTE MIDTOWN SOI - BUILDING A - 204173 UNDERSLAB VENT PIPING SYSTEM

PART 2 - PRODUCTS

2.1 MATERIALS

A. Gravel Bed: Provide washed, evenly graded mixture of crushed stone, or crushed or uncrushed
gravel, ASTM D 448, coarse aggregate grading size No. 57, with 100 percent passing a 2 inch sieve
and none passing a 1/4 inch sieve.
1. Provide a 6 inch thick gravel layer placed directly on the soil subgrade.

B. Perforated Pipe: Provide perforated, polyvinyl chloride (PVC) pipe and fittings, ASTM D 2729,
bell-and-spigot ends, for closed joints.
1. Subfloor Manifold Piping: Provide 3 inch diameter perforated Schedule 40 PVC piping.
2. Perimeter Collector Piping: Provide 4 inch diameter perforated Schedule 40 PVC piping.

C. Vapor Retarder: Provide polyethylene vapor retarder, ASTM D 4397, 10.0 mils thick.
1. Vapor Retarder Tape: Provide pressure sensitive tape of type recommended by vapor
retarder manufacturer for sealing joints and penetrations in vapor retarder.

D. Vertical Riser: Provide vertical riser fabricated of PVC, galvanized sheet metal, or ductile iron, as
approved by the authorities having jurisdiction and the engineer of record. Route the vertical riser in
the building envelope as indicated on the Drawings.

E. Motorized Exhaust/Vent Fans:
1. Roof Exhausters:
a. Centrifugal or Axial Fan Unit: Backward inclined or airfoil design, direct driven, with
sealed UV resistant plastic or spun steel with enamel finish housing; totally enclosed motor
and drive assembly.
b. Roof Curb: 12 inches high with continuously welded seams, built-in cant strip, 1 inch
insulation and curb bottom, hinged curb adapter and factory-installed nailer strip. Where
scheduled, provide interior baffle with acoustic insulation and increase curb height as
required.
c. Disconnect Switch: Field-wired, non-fusible, in exterior terminal boxes.
d. Manufacturer: Subject to compliance with requirements, provide products of one of the
following:
1) Fantech.
2) Spruce Environmental.
3) Suncourt.
e. Basis of Design: Product specified is manufactured by Fantech. Items specified are to
establish a standard of quality for design, function, materials, and appearance. Equivalent
products by listed manufacturers are acceptable. The Architect will be the sole judge of the
basis of what is equivalent.
1) Model: FR150.
2) CFM: 106.
3) Static Pressure: 1.0 W.G.
4) Voltage: 120V/Single Phase.
5) Control Operation: Continuous.

F. Accessories and Fittings: Provide required various Schedule 40 PVC fittings, couplings, and caps.

SECTION 02750 - 4 REVISED JANUARY 8, 2007
UNDERSLAB VENT PIPING SYSTEM CHARLOTTE MIDTOWN SOI - BUILDING A - 204173

PART 3 - EXECUTION

3.1 EXAMINATION

A. Verification of Conditions: Examine areas and conditions under which the work is to be installed,
and notify the Contractor in writing, with a copy to the Owner and the Architect, of any conditions
detrimental to the proper and timely completion of the work. Do not proceed with the work until
unsatisfactory conditions have been corrected.
1. Beginning of the work shall indicate acceptance of the areas and conditions as satisfactory by
the Installer.

3.2 INSTALLATION

A. General: Install underslab vent piping system in accordance with reviewed product data, final shop
drawings, the manufacturer’s written recommendations, and as indicated on the Drawings.

B. Gravel Placement for Underslab Vent Piping System: Prepare soil subgrade by grading to
required elevation. Place a 6 inch gravel base on the soil subgrade.

C. Underslab Vent Piping System:
1. Preparation:
a. Field Measurement:
1) The drawings are not an exact representation of all conditions involved, therefore,
piping layout shall be constructed to suit actual field measurements.
2) Submit details of proposed piping departures established by field conditions or other
causes to the Engineer for approval.
2. Workmanship:
a. Install piping in longest practical lengths, avoiding insofar as possible the use of short
lengths and couplings.
b. Remove scale dirt, grease, oil, and debris from pipes before installation.
3. Pipe Work:
a. Perform pipe work in accordance with current editions of applicable codes.
b. Cap or plug open ends of pipes until final connections are made.
c. Lines shall be cleared of any water or debris before final connection.
4. Joint Fabrication:
a. Construct pipelines with as few joints as possible.
b. Exercise care when making pipe joints and make joints in accordance with the pipe
material manufacturer’s recommendations and the following requirements. In each
instance of pipe joining, those portions of pipes involved must be absolutely clean prior to
assembly. If a joint is extremely difficult to assemble or sealing is not affected, disassemble
the joint and correct the difficulty. Remake the joint using new materials when necessary.
c. Use chemical solvent welding components to join PVC pipes.
5. Installation of Pipe and Fittings:
a. Install pipe and fittings true to alignment.
b. Provide rigid support for piping as required.
c. Install piping, fittings, and appurtenances in strict accordance with the manufacturer’s
technical data and printed instructions.
6. Roof discharge of vent system shall be in accordance with EPA Standard.
a. Fan Height Discharge Above Roof: Minimum 24 inches.
b. Fan Discharge Separation: Minimum 10 feet from operable windows and mechanical
intakes.
7. Crossing floor obstructions shall be in accordance with EPA Standard recommendations.
JANUARY 8, 2007 SECTION 02750 - 5
CHARLOTTE MIDTOWN SOI - BUILDING A - 204173 UNDERSLAB VENT PIPING SYSTEM

8. The vent system is a composite section including the required concrete slab on-grade;
minimum thickness of 5 inches.
9. Installation of concrete slab on-grade shall be installed prior to Certificate of Occupancy for any
tenant within the building.

D. Vapor Retarder:
1. Vapor retarder shall comply with ASTM E 1745 and shall be installed in accordance with
ASTM E 1643. Vapor retarder shall comply with and be installed in accordance with
manufacturer’s written recommendations.
2. Extend vapor retarder to extremities of areas to be protected from vapor transmission. Secure
in place with adhesives or other anchorage system as indicated. Extend vapor retarder to cover
miscellaneous voids in insulated substrates.
a. Sheeting should cover the entire floor area, and separate sections of sheeting should be
overlapped at least 12 inches.
b. Seal overlapping joints in vapor retarders with vapor retarder tape according to vapor
retarder manufacturer's instructions. Seal butt joints and fastener penetrations with vapor
retarder tape.
c. Firmly attach vapor retarders to substrates with mechanical fasteners or adhesives as
recommended by vapor retarder manufacturer.
d. Seal joints caused by pipes and similar items penetrating vapor retarders with vapor
retarder tape to create an airtight seal between penetrating objects and vapor retarder.
e. To retard soil gas entry, large openings through concrete slabs, wood, and other floor
assembles in contact with the soil, such as spaces around bathtub, toilet drains, shall be
filled or closed with material that provide a permanent airtight seal such as non-shrink
mortar, grouts, expanding foam, or similar materials designed for such applications.
f. Floor drains and air conditioning condensate drains that discharge directly into the soil
below the slab or into a crawlspaces should be avoided. If installed, these drains shall be
routed through solid pipe to daylight or though a trap approved for use in floor drains by
local plumbing codes.
g. Repair any tears or punctures in vapor retarders immediately before concealment by other
work. Cover with vapor retarder tape or another layer of vapor retarder.

E. Motorized Exhaust/Vent Fans: Install in accordance with manufacturer's instructions. Secure roof
exhausters with lag screws to roof curb. Install flexible ductwork connections when fan connects to
ductwork. Provide ventilating and exhaust fans with integral vibration isolation or mount or suspend
unit with vibration isolators.

F. Labels: All exposed and visible interior vent pipes shall be identified with at least one label on each
floor levels. The label shall read: Vapor Reduction System.

3.3 PROTECTION

A. Provide final protection and maintain conditions in a manner acceptable to the Installer, that shall
ensure that the underslab vent piping system shall be without damage at time of Substantial
Completion.

END OF SECTION
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Fans are attached to PVC pipe using flexible couplings.
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For 4” PVC pipe use Indiana Seals #156-64,
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For 3” PVC pipe use Indiana Seals #156-63,
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THE FOLLOWING WARRANTIES DO NOT APPLY:
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WARRANTY VALIDATION
• The user must keep a copy of the bill of sale to verify purchase date.
• These warranties give you specific legal rights, and are subject to an
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* Also available with 8" duct connection. Model FR 250-8. Special Order.
Five (5) Year Warranty
This warranty supersedes all prior warranties
Performance Data
Dimensional Data
All dimensions in inches
Form#HP1005
United States
1712 Northgate Blvd.
Sarasota, Florida 34234
Phone: [phone]
Fax:[phone]
Canada
50 Kanalflakt Way
Bouctouche, NB E4S 3M5
Phone: [phone]
Fax:[phone]
For more information contact:
web: www.fantech.net
e-mail:[e-mail]