WQ0042523_Application (FTSE)_20210514

CHARLOTTE
May 10, 2021
Attention: Fast Track Sewer System Extension Application
North Carolina Division of Water Resources
Water Quality Permitting Section
Mooresville Regional Office
610 E. Central Avenue
Mooresville, N.C. 28115
704-663-1699
f-1ECEIVED/NCDEQ/DWR
MAY 142021
MOORESVILWQROS
LE REGIONAL OFFICE
Reference: 8" SS to serve 15608 & 15644 Ewart Rd, FTA 04-16 Approval Request Under Approved
Blanket Variance — Manholes within 100-foot Radius of Wells
Dear NCDWR,
We are requesting approval for the installation of a sanitary sewer manhole to be installed within the 100-
foot radius of a well. The project is located at 15608 & 15644 Ewart Road and extends sewer service
approximately 594 LF along Ewart Road. Charlotte Water has obtained blanket variance approval under the
VADC 10-14 review process for utilizing specified manholes at these locations. All installations are designed
and tested to be watertight and must pass field testing for acceptance into our system. Please find the
following submittal documents.
Submittal FTA 04-16 Request:
• Cover Letter
• FTA 04-16 Form
• Approved Blanket Variance with Special Provision specifications for manhole installed within the
100-foot radius of well.
• Construction Drawing (Site Maps)
• Application Fee
If you require any additional information or want to schedule a site meeting, please contact me at 704-591-
5780 or my email address: [e-mail] or Jason Marshall at 704-534-9398 or his
e-mail address: [e-mail].
Sincerely,
i� .21n c.e)
Michael Greenwood
Project Coordinator- Design & Construction
CHARLOTTE WATER
cc: File
Enclosures
Engineering Division 5100 Brookshire Boulevard Charlotte, North Carolina 28216 704-399-2551
Charlotte Water

Divis
RECEIVED/NCDEQ/DWR
MAY 14 2021
1$4/CMIC 02T .0300 —
on of Water ResdaailESVILLE REGIONAL OFFICE
State of North Carolina
Department of Environmental Quality
Division of Water Resources
FAST TRACK SEWER SYSTEM EXTENSION APPLICATION
FTA 04-16 & SUPPORTING DOCUMENTATION
Application Number: IJ(t/I .;� (to be completed by DWR)
All items must be completed or the application will be returned
RECEIVED/NCDEQ/DWR
MAY 14 2021
WQROS
I. APPLICANT INFORMATION: MOORESVILLE REGIONAL OFF(
1. Applicant's name: Charlotte Water (City of Charlotte) (company, municipality, HOA, utility, etc.)
2. Applicant type: ❑ Individual ❑ Corporation El General Partnership ❑ Privately -Owned Public Utility
❑ Federal ❑ State/County ® Municipal ❑ Other
3. Signature authority's name: Keri B. Cantrell, P.E. per 15A NCAC 02T .0106(b)
Title: Chief Engineer
4. Applicant's mailing address: 5100 Brookshire Blvd
City: Charlotte State: NC Zip: 28216-
5. Applicant's contact inforrnation:
Phone number: [phone] Email Address: keri.cantrellncharlottenc.gov
II. PROJECT INFORMATION:
1. Project name: 8" SS & 8" Water Main to serve 15608 & 15644 Ewart Rd
2. Application/Project status: ® Proposed (New Permit) ❑ Existing Permit/Project
If a modification, provide the existing permit number: WQ00 and issued date:
If new construction but part of a master plan, provide the existing permit number: WQ00
3. County where project is located: Mecklenburg
4. Approximate Coordinates (Decimal Degrees): Latitude: 35.427056° Longitude: -80.808879°
5. Parcel ID (if applicable): 01925104
(or Parcel ID to closest downstream sewer)
III. CONSULTANT INFORMATION:
Professional Engineer: Jason E. Marshall License Number: 046259
Firm: Charlotte Water
Mailing address: 5100 Brookshire Blvd.
City: Charlotte State: NC Zip: 28216-
Phone number: [phone] Email Address: jason.marshall a,charlottenc.gov
IV. WASTEWATER TREATMENT FACILITY (WWTF) INFORMATION:
1. Facility Name: Rocky Creek WWRF Permit Number: NC0036269
Owner Name: WSACC
V. RECEIVING DOWNSTREAM SEWER INFORMATION (if different than WWTF):
1. Pennit Number(s): WQ218-533 Downstream (Receiving) Sewer Size: 8 inch
System Wide Collection System Permit Number(s) (if applicable): WQCS00001
Owner Name(s): Charlotte Water
FORM: FTA 04-16 Page 1 of 5

VI. GENERAL REQUIREMENTS
1. If the Applicant is a Privately -Owned Public Utility, has a Certificate of Public Convenience and Necessity been attached?
❑ Yes ❑No ❑N/A
2. If the Applicant is a Developer of lots to be sold, has a Developer's Operational Agreement (FORM: DEV) been attached?
❑ Yes ❑No ❑N/A
3. If the Applicant is a Home/Property Owners' Association, has an Operational Agreement (FORM: HOA) been attached?
❑ Yes ENo ❑N/A
4. Origin of wastewater: (check all that apply):
❑ Residential Owned
❑ Residential Leased
E School / preschool / day care
❑ Food and drink facilities
❑ Businesses / offices / factories
❑ Retail (stores, centers, malls)
❑ Retail with food preparation/service
❑ Medical / dental / veterinary facilities
❑ Church
❑ Nursing Horne
❑ Car Wash
❑ Hotel and/or Motels
❑ Swimming Pool /Clubhouse
❑ Swimming Pool/Filter Backwash
❑ Other (Explain in Attachment)
5. Nature of wastewater : % Domestic/Commercial % Commercial
% Industrial (See 15A NCAC 02T .0103(20))
>Is there a Pretreatment Program in effect?
6. Has a flow reduction been approved under 15A NCAC 02T .0114(0? E Yes
➢ If yes, provide a copy of flow reduction approval letter
7. Summarize wastewater generated by project:
❑ Yes ❑ No
❑ No
Establishment Type (see 02T.0114(0)
Daily Design Flow a,b
No. of Units
Flow
gal/
GPD
gal/
GPD
gal/
GPD
gal/
GPD
gal/
GPD
gal/
GPD
Total
GPD
a See 15A NCAC 02T .0114(b), (d), (e)(1) and (e)(2) for caveats to wastewater design flow rates (i.e., minimum flow per
dwelling; proposed unknown non-residential development uses; public access facilities located near high public use areas;
and residential property located south or east of the Atlantic Intracoastal Waterway to be used as vacation rentals as defined
in G.S. 42A-4).
b Per 15A NCAC 02T .0114(c), design flow rates for establishments not identified [in table 15A NCAC 02T.01 14] shall be
determined using available flow data, water using fixtures, occupancy or operation patterns, and other measured data.
8. Wastewater generated by project: GPD (per 15A NCAC 02T .0114)
➢ Do not include future flows or previously permitted allocations
If permitted flow is zero, indicate why:
E Pump Station or Gravity Sewer where flow will be permitted in subsequent permits that connect to this line
E Flow has already been allocated in Permit Number:
❑ Rehabilitation or replacement of existing sewer with no new flow expected
❑ Other (Explain):
FORM: FTA 04-16
Page 2 of 5

VII. GRAVITY SEWER DESIGN CRITERIA (If Applicable) - 02T .0305 & MDC (Gravity Sewers):
1. Summarize gravity sewer to be permitted:
Size (inches)
Length (feet)
Material
➢ Section II & III of the MDC for Permitting of Gravity Sewers contains information related to design criteria
➢ Section III contains information related to minimum slopes for gravity sewer(s)
➢ Oversizing lines to meet minimum slope requirement is not allowed and a violation of the MDC
VIII. PUMP STATION DESIGN CRITERIA (If Applicable) — 02T .0305 & MDC (Pump Stations/Force Mains):
COMPLETE FOR EACH PUMP STATION INCLUDED IN THIS PROJECT
1. Pump station number or name:
2. Approximate Coordinates (Decimal Degrees): Latitude: Longitude: -
3. Design flow of the pump station: millions gallons per day (firm capacity)
4. Operational point(s) of the pump(s): gallons per minute at
5. Summarize the force main to be permitted (for this Pump Station):
feet total dynamic head (TDH)
Size (inches)
Length (feet)
Material
6. Power reliability in accordance with 15A NCAC 02T .0305(h)(1):
❑ Standby power source or pump with automatic activation and telemetry - 15A NCAC 02T .0305(h)(1)(B):
➢ Required for all pump stations with an average daily flow greater than or equal to 15,000 gallons per day
➢ Must be permanent to facility
Or if the pump station has an average daily flow less than 15,000 gallons per day:
❑ Portable power source with manual activation, quick -connection receptacle and telemetry - 15A NCAC 02T
.0305(h)(1)(C)
or
❑ Portable pumping unit with plugged emergency pump connection and telemetry - 15A NCAC 02T .0305(h)(1)(C):
➢ It shall be demonstrated to the Division that the portable source is owned or contracted by the applicant (draft agreement)
and is compatible with the station.
➢ If the portable power source or pump is dedicated to multiple pump stations, an evaluation of all the pump stations' storage
capacities and the rotation schedule of the portable power source or pump, including travel timeframes, shall be provided
in the case of a multiple station power outage.
FORM: FTA 04-16 Page 3 of 5

IX. SETBACKS & SEPARATIONS — (02B .0200 & 15A NCAC 02T .0305(f)):
1. Does the project comply with all separations found in 15A NCAC 02T .0305(f) & (g)
➢ 15A NCAC 02T.0305(f) contains minimum separations that shall be provided for sewer systems:
Yes ® No
Setback Parameter*
Separation Required
Storm sewers and other utilities not listed below (vertical)
24 inches
Water mains (vertical -water over sewer including in benched trenches)
18 inches
Water mains (horizontal)
10 feet
Reclaimed water lines (vertical - reclaimed over sewer)
18 inches
Reclaimed water lines (horizontal - reclaimed over sewer)
2 feet
**Any private or public water supply source, including any wells, WS-I waters of Class I or
Class II impounded reservoirs used as a source of drinking water
100 feet
**Waters classified WS (except WS-I or WS-V), B, SA, ORW, HQW, or SB from normal
high water (or tide elevation) and wetlands (see item IX.2)
50 feet
**Any other stream, lake, impoundment, or ground water lowering and surface drainage
ditches
10 feet
Any building foundation
5 feet
Any basement
10 feet
Top slope of embankment or cuts of 2 feet or more vertical height
10 feet
Drainage systems and interceptor drains
5 feet
Any swimming pools
10 feet
Final earth grade (vertical)
36 inches
➢ 15A NCAC 02T.0305(g) contains alternatives where separations in 02T.0305(f) cannot be achieved.
➢ **Stream classifications can be identified using the Division's NC Surface Water Classifications webpage
➢ If noncompliance with 02T.0305(f) or (g). see Section X of this application
2. Does the project comply with separation requirements for wetlands? (50 feet of separation) ❑ Yes ❑ No ® N/A
➢ See the Division's draft separation requirements for situations where separation cannot be meet
➢ No variance is required if the alternative design criteria specified is utilized in design and construction
➢ As built documents should reference the location of areas effected
3. Does the project comply with setbacks found in the river basin rules per 15A NCAC 02B .0200? ❑ Yes ❑ No ►1 N/A
➢ This would include Trout Buffered Streams per I5A NCAC 2B.0202
4. Does the project require coverage/authorization under a 404 Nationwide or
individual permits or 401 Water Quality Certifications?
➢ Information can be obtained from the 401 & Buffer Permitting Branch
❑ Yes ® No
5. Does project comply with 15A NCAC 02T.0105(c)(6) (additional permits/certifications)? ® Yes ❑ No
Per 15A NCAC 02T.0105(c)(6), directly related environmental permits or certification applications are being prepared, have
been applied for, or have been obtained. Issuance of this permit is contingent on issuance of dependent permits (erosion and
sedimentation control plans, stormwater management plans, etc.).
6. Does this project include any sewer collection lines that are deemed "high -priority?"
Per 15A NCAC 02T.0402, "high -priority sewer" means "any aerial sewer, sewer contacting surface waters, siphon, or sewer
positioned parallel to streambanks that is subject to erosion that undermines or deteriorates the sewer.
❑ Yes ® No ® N/A
➢ If yes, include an attachment with details for each line, including type (aerial line, size, material, and location).
High priority lines shall be inspected by the permittee or its representative at least once every six -months and inspections
documented per 15A NCAC 02T.0403(a)(5) or the permitee's individual System -Wide Collection permit.
FORM: FTA 04-16 Page 4 of 5

X. CERTIFICATIONS:
1. Does the submitted system comply with 15A NCAC 02T, the Minimum Design Criteria for the Permitting of Pump Stations
and Force Mains (latest version), and the Gravity Sewer Minimum Design Criteria (latest version) as applicable?
❑ Yes ® No
If No, complete and submit the Variance/Alternative Design Request application (VADC 10-14) and supporting documents for
review. Approval of the request is required prior to submittal of the Fast Track Application and supporting documents.
2. Professional Engineer's Certification:
I, Jason E. Marshall, P.E.
(Professional Engineer's name from Application Item III.1.)
attest that this application for
has been reviewed by me and is accurate, complete and consistent with the information supplied in the plans, specifications,
engineering calculations, and all other supporting documentation to the best of my knowledge. I further attest that to the best
of my knowledge the proposed design has been prepared in accordance with the applicable regulations, Gravity Sewer
Minimum Design Criteria for Gravity Sewers (latest version), and the Minimum Design Criteria for the Fast -Track Permitting
of Pump Stations and Force Mains (latest version). Although other professionals may have developed certain portions of this
submittal package, inclusion of these materials under my signature and seal signifies that I have reviewed this material and
have judged it to be consistent with the proposed design.
NOTE — In accordance with General Statutes 143-215.6A and 143-215.6B, any person who knowingly makes any false
statement, representation, or certification in any application package shall be guilty of a Class 2 misdemeanor, which may
include a fine not to exceed $10,000, as well as civil penalties up to $25,000 per violation.
North Carolina Professional Engineer's seal, signature, and date:
3. Applicant's Certification per 15A NCAC 02T .0106(b):
I Keri Cantrell, Chief Engineer
(Signature Authority's name & title from Application Item 1.3.)
°N. • ERIK \\\‘
1111111\\
attest that this application for
has been reviewed by me and is accurate and complete to the best of my knowledge. I understand that if all required parts of
this application are not completed and that if all required supporting documentation and attachments are not included, this
application package is subject to being returned as incomplete. I understand that any discharge of wastewater from this non -
discharge system to surface waters or the land will result in an immediate enforcement action that may include civil penalties,
injunctive relief, and/or criminal prosecution. I will make no claim against the Division of Water Resources should a condition
of this permit be violated. I also understand that if all required parts of this application package are not completed and that if
all required supporting information and attachments are not included, this application package will be returned to me as
incomplete.
NOTE — In accordance with General Statutes 143-215.6A and 143-215.6B, any person who knowingly makes any false
statement, representation, or certification in any application package shall be guilty of a Class 2 misdemeanor, which may
include a fine not to exceed $10,000 as well as civil penalties up to $25,000 per violation.
Signature:
Date:
5/7/2021
FORM: FTA 04-16 Page 5 of 5

ROY COOPER
Governor
DIONNE DELLI-GATTI
Secretary
S. DANIEL SMITH
Director
Keri Cantrell, P.E. PhD, Chief Engineer
Charlotte Water
5100 Brookshire Blvd
Charlotte, NC 28216
NORTH CAROLINA
Environmental Quality
April 7, 2021
Subject: Variance Request Approval
Manholes Within the 100-Foot Radius of Wells
Charlotte Water (Permit No. WQCS00001)
Mecklenburg County
Dear Ms. Cantrell:
The Division of Water Resources (Division) has reviewed the variance request as submitted on
June 17, 2020, with additional information received March 17, 2021. This blanket variance request is
approved in accordance with the provisions for alternative designs under 15A NCAC 02T.0105(n) and is
subject to the following conditions:
• Manholes which must be located within the 100-foot radius of existing wells due to existing
conditions shall be constructed in accordance with the approved Special Provisions, attached to
and hereby incorporated into this variance approval by reference. Any changes to the Special
Provisions approved herein must be reviewed by the Division prior to implementation.
• The minimum separation for any portion of the sewer system shall not be less than
25 feet from a private well or 50 feet from a public well. All other appurtenances shall be located
outside of the 100-foot radius of wells. [15A NCAC 02T.0305(g)(2)]
• Where the gravity sewer line does not meet separation requirements for private wells; materials,
testing methods, and acceptability standards meeting water main standards (15A NCAC 18C) shall
be specified, per 15A NCAC 02T.0305(g).
Please note that projects which do not meet all applicable sewer related rules and minimum design
criteria must be permitted by the Division in accordance with 15A NCAC 02T.0306(a), including
projects to which this blanket variance approval applies.
Regardless of the variance approval, in the event that the wastewater collection facilities fail to perform
satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate
corrective action, including those as may be required by this Division, such as the construction of
additional or replacement facilities.
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11617 Mail Service Center I Raleigh, North Carolina 27699-1617
919.707.9000

Charlotte Water
Manholes Within the 100-foot Radius of Wells
April 7, 2021
All other elements of this project shall be constructed in accordance with all applicable rules and statues
including, 15A NCAC 2T; the Division of Water Resources' (Division) Gravity Sewer Minimum Design
Criteria adopted February 12, 1996 as applicable; and the Division's Minimum Design Criteria for the
Fast -Track Permitting of Pump Stations and Force Mains adopted June 1, 2000 as applicable. Approval
of the variance request does not constitute approval of the permit.
If you have any questions, please contact Christyn Fertenbaugh, P.E. via email at
[e-mail].
Sincerely,
--DocuSigned by:
CAAXISMIL- t,t cg
`-99AEF363909A40E...
for S. Daniel Smith
Director, Division of Water Resources
by Christyn L. Fertenbaugh, P.E.
Municipal Permitting Unit, Division of Water Resources, NCDEQ
Enclosure: Approved Special Provisions
cc: Jason E. Marshall, P.E., Charlotte Water([e-mail])
Mooresville Regional Office, Water Quality Section Regional Operations
Municipal Permitting Unit Files (electronic copy)

4/7/2021
Charlotte Water
DESIGN AND CONSTRUCTION
SPECIAL PROVISIONS
FOR MANHOLES INSTALLED WITHIN POTABLE
WATER SUPPLY AREA
City of Charlotte, NC, USA
Jason E. Marshall
4-6-2021

SPECIAL PROVISIONS FOR MANHOLE INSTALLED WITHIN POTABLE WATER SUPPLY AREA
DESIGN AND CONSTRUCTION
SPECIAL PROVISIONS
FOR MANHOLES INSTALLED WITHIN POTABLE WATER SUPPLY AREA
PART 1 — GENERAL
Section 1.01 — Description
This specification covers special requirements for manholes structures installed within the 100-foot
radius of a potable water supply well. Included are various installation and product options to meet
State of North Carolina 15A NCAC 2T rules. The Engineer shall obtain approval/notifications as required
by the Division of Water resources prior to installation. This includes submittal of a Variance/Alternate
Design Request, VADC 10-14 Form, to be completed by Engineer.
2 . Section 1.02 —State of North Carolina Division of Water Resources Requirements
Manhole structure requirements shall meet the State of North Carolina 15A NCAC 2T Regulations
covered in the Minimum Design Criteria for the Permitting of Gravity Sewer, Adopted by the Division of
Water Quality on February 12, 1996, Updated to 15A NCAC 2T Regulations on March 2008, under
Gravity Sewer Minimum Design Criteria. Specifically, subsection VI. PROTECTION OF POTABLE WATER
SUPPLIES AND STORM SEWERS, B. Relation to Water Supply Sources. 1. A distance of 100 feet shall be
maintained between any private or public water supply source, including any WS-I waters or Class I or
Class II impounded reservoirs used as a source of drinking water. If this minimum separation cannot be
maintained, ferrous sewer pipe with joints equivalent to public water supply design standards and
pressure tested to 150 psi to assure watertightness, shall be used. The minimum separation shall
however not be less than 25 feet from a private well or 50 feet from a public water supply well.
27
43
4-7
Section 1.03 —Submittals
The CONTRACTOR shall submit proposed manhole structure and materials to be installed meeting
requirements herein to be approved by Engineer.
Section 1.04 — Test Requirements
A. Manhole Leakage Testing: Manholes shall be tested by plugging the inlet and outlet
pipes with airtight plugs and using the following procedure:
B. Vacuum Air: Manhole vacuum air testing shall be performed in accordance with ASTM C-
1244. All manholes installed on the project to be tested. Manholes that fail the test shall
be repaired as specified or as approved by the Engineer and retested until they pass
C. Engineer shall witness testing.
Charlotte Water -
For Manholes Installed
Within Potable Water Supply Area
SP Part 4-1 SPECIAL PROVISIONS

SPECIAL PROVISIONS FOR MANHOLE INSTALLED WITHIN POTABLE WATER SUPPLY AREA
66
69
PART 2 — PRODUCTS
Section 2.01 — Watertight Fiberglass Manholes
A. Fiberglass manholes shall be provided by LFM manufacturing or approved equal.
B. Fiberglass manholes shall meet the requirements of ASTM Standard D3753.
C. Installation of fiberglass manhole shall meet requirements of detail included. Including:
a. manhole lid to be watertight-Camlock with gasket
b. Fiberglass manhole shall be tested to 10-inches Hg for vacuum and 5 psi for
pressure.
c. Sika Swell S-2 or equal shall be applied at any gaps/joints where the manhole
ring is installed.
d. A spray coating, Ravens Lining or equal, shall be applied to all bare brick and
mortar surfaces.
Charlotte Water -
For Manholes Installed
Within Potable Water Supply Area
SP Part 4-2 SPECIAL PROVISIONS

SPECIAL PROVISIONS FOR MANHOLE INSTALLED WITHIN POTABLE WATER SUPPLY AREA
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SPECIAL PROVISIONS FOR MANHOLE INSTALLED WITHIN POTABLE WATER SUPPLY AREA
Section 2.02 — Polymer Concrete Manholes
A. Polymer Concrete Manholes shall be manufactured by Armorock LLC or approved equal.
B. Provide polymer concrete manhole sections, monolithic base sections and related
components referencing to ASTM C 478. ASTM C 478 material and manufacturing is
allowed compositional and dimensional differences required by a polymer concrete
product. Polymer concrete manhole bottom sections shall be furnished with flexible
watertight boots for pipe connections.
C. Provide base riser section with monolithic floors, unless shown otherwise.
D. Provide riser sections joined with bell and spigot / ship -lap design seamed with butyl
mastic and or rubber gaskets (ASTM C 990) so that on assembly, manhole base, riser
and top section make a continuous and uniform watertight manhole structure. All
exterior joints (including base and riser sections) shall be sealed with one 6-inch wide
91 (minimum) exterior butyl rubber joint sealant membrane centered on the joint. The
tape shall be capable of sealing manhole joints against groundwater infiltration. The
installation of the joint sealant membrane shall be in conformance with the
recommendations of the manufacturer.
99
103
E. Construct riser sections for polymer concrete manholes from standard polymer concrete
manhole sections of the diameter indicated on drawings. Use various lengths of polymer
concrete manhole sections in combination to provide correct height with the fewest
joints.
F. Design wall sections for depth and loading conditions with wall thickness as designed by
905 polymer concrete manufacturer.
_J
9.08
109
120
125
G. Provide tops to support AASHTO HS-20 or HL-93 or vehicle loading or loads as required.
Watertight frames and covers shall be utilized, the watertight seal between frame
and cover shall be accomplished by means of a rubber gasket. Watertight frames and
covers shall be Dewey Brothers RCR 2010W, Vulcan VM 1383, U.S. Foundry or
approved equal. Frame shall be set with four (4) quarter turn locks and water-resistant
secondary o-ring gaskets.
H. Installation of polymer concrete manholes shall be installed in accordance with
manufacture's recommendations.
I. All materials needed for grouting and patching will be a polyester mortar compound
provided by the manufacturer or an approved equal by the manufacturer
J. All manholes shall be free of visible leakage. Each manhole shall be tested for leaks and
inspected in accordance with Section 1.04 of this document, and all leaks shall be
repaired in a manner subject to the ENGINEER's approval.
Charlotte Water -
For Manholes Installed
Within Potable Water Supply Area
SP Part 4-4 SPECIAL PROVISIONS

SPECIAL PROVISIONS FOR MANHOLE INSTALLED WITHIN POTABLE WATER SUPPLY AREA
2 r Section 2.03 —Concrete Manholes with Watertight Epoxy Liner
A. Concrete Manholes with Watertight Epoxy Liner shall meet Charlotte Water's standard
specifications for materials and installation of standard concrete manholes with the
addition of a watertight epoxy liner as stated herein.
B. Contractor shall provide polymer epoxy lining system that provides a watertight seal and
that is designed for protection against hydrogen sulfide corrosion.
C. Acceptable manufactures and linings include Raven Lining Systems - Products: Raven
405 epoxy coating system, Carboline - Products: Plastie 5371, Sauereisen, Inc. -
Products: Sewergard Glaze 210GL, or approved equal.
D. Application shall be in accordance with manufacturer's instructions and SSPC-SP
13/NACE 6.
E. Minimum liner coating thickness shall have a final thickness of 125 mils.
F. Finished coating shall be tested in accordance with ASTM D4787 to locate holidays for
repair. A minimum of 100 volts per mil of coating thickness shall be used to detect
holidays. All holidays and defects shall be repaired according to manufacture
instructions.
G. All manholes shall be free of visible leakage. Each manhole shall be tested for leaks and
inspected in accordance with Section 1.04 of this document, and all leaks shall be
repaired in a manner subject to the ENGINEER's approval.
H. Manhole base sections shall be cast monolithically or have a waterstop cast in the cold
joint between the walls and the base slab. Manholes pre -cast bottom sections shall be
furnished with flexible watertight boots for pipe connections.
No doghouse or precast straddle manhole designs shall will be utilized or accepted.
J. Joints shall be sealed with rubber gaskets in accordance with ASTM C443 or with butyl
rubber sealants conforming to Federal Specification SS-S210A and AASHTO M-198, Type
B. All exterior joints (including base and riser sections) shall be sealed with one 6-inch
wide (minimum) exterior butyl rubber joint sealant membrane centered on the joint.
The tape shall be capable of sealing manhole joints against groundwater infiltration. The
installation of the joint sealant membrane shall be in conformance with the
recommendations of the manufacturer.
K. Watertight frames and covers shall be utilized, the watertight seal between frame
and cover shall be accomplished by means of a rubber gasket. Watertight frames and
covers shall be Dewey Brothers RCR 2010W, Vulcan VM 1383, U.S. Foundry or
approved equal. Frame shall be set with four (4) quarter turn locks and water-resistant
secondary o-ring gaskets.
Charlotte Water -
For Manholes Installed
Within Potable Water Supply Area
SP Part 4-5 SPECIAL PROVISIONS