[HISTORY: Adopted by the Water and Sewer Department of the
Town of Wolcott September 2011. Amendments noted where applicable.]
Unless the context specifically indicates otherwise, the meaning
of terms used herein shall be as follows:
The pump and discharge piping connecting a building or septic
tank with a sewer main and used in instances where a standard gravity
building sewer cannot be utilized because the elevation of the first
floor is too low. Pumps required for the lower level of buildings
which discharge into a gravity building sewer servicing the remainder
of the building are not classified as "building pump connections."
That part of the building's sanitary pipe system starting
five feet outside the inner face building wall to its connection with
the public sewer system and conveying the sewage of one building site.
An individual, partnership, or corporation engaged in the
field of construction to whom or which the Sewer and Water Commission
or its authorized agent shall have issued a license to install and
repair sewers and building sewers during the period when such license
is valid.
The individual, partnership, or corporation executing the
application form for approval of a final site or subdivision plan.
The Engineer for the Sewer and Water Commission, or an individual,
partnership, or corporation duly appointed by the Town to undertake
the duties and exercise the authority herein conferred upon the Engineer,
and also the representatives of the Town Engineer when acting within
and limited by the particular duties and powers assigned to each.
Any employee, agent, or officer of the Town assigned by the
Sewer and Water Commission to examine and test material and work furnished
by a contractor, to observe the construction of a building sewer or
any part thereof, to assist the contractor in the interpretation of
specifications and methods of construction, to make measurements and
keep records for the Engineer and to report to the Engineer on the
performance of the contractor relative to the work, all as and only
as instructed by the Engineer. No inspector shall act as assistant
to or foreman for a contractor. Inspectors shall have no power to
waive specifications of these rules and regulations or to otherwise
deviate from the original covenants of any agreements or contracts.
The person or persons, firm, corporation, or partnership
having title to the property to be served by the sewer.
That portion of the public right-of-way used for vehicular
travel.
Any accepted portion of the public sewer system of the Town
of Wolcott.
The Sewer and Water Commission of the Town of Wolcott as
provided by ordinances of said Town and the General Statutes of the
State of Connecticut.
The entire width of a public right-of-way used as a highway.
A subdivision as defined in the Subdivision Regulations of
the Town.
The Town of Wolcott acting through any authorized representative.
The current editions and addenda of the noted reference manuals
are hereby incorporated into these regulations:
A.
Manual for Uniform Traffic Control Devices (MUTCD), 2009 Edition,
U.S. Department of Transportation, Federal Highway Administration.
B.
Connecticut Public Health Code, Connecticut Department of Public
Health.
C.
On-Site Sewage Disposal Regulations and Technical Standards for Subsurface
Sewage Disposal Systems, Connecticut Department of Public Health.
D.
2002 Connecticut Guidelines for Soil Erosion and Sediment Control,
Connecticut Department of Energy and Environmental Protection.
E.
Standard Specification for Roads, Bridges and Incidental Construction,
Form 816, Connecticut Department of Transportation.
F.
State Building Code, Connecticut Department of Public Safety.
A.
Prior to the submission of any final plan to the Planning and Zoning
Commission of the Town of Wolcott for approval of a site development
including any subdivision or for final site plan approval for industrial,
residential, or commercial use as required by said Planning and Zoning
Commission for projects to be connected into the public sewer system
or located near public sewers, copies of the proposed plan, with its
location within the Town of Wolcott, shall be submitted to the Sewer
and Water Commission of said Town or its delegated agent in order
that said Sewer and Water Commission may make a determination as to
whether or not said plans may be subject to and comply with the rules,
regulations, and requirements of the Sewer and Water Commission. Any
changes to the plans shall require the Commission's approval.
B.
The Sewer and Water Commission or its designated agent shall have
the right to require such additional information as it deems necessary
to determine whether or not the proposed use of the land set forth
in the plan should include a requirement that such proposed land use
shall have to conform and be subject to the requirements, rules, and
regulations of the Sewer and Water Commission. Said determination
by the Sewer and Water Commission shall be based upon its present
and future plans for sanitary sewer systems, upon an evaluation of
the effect of said proposed land use upon the general health and welfare
of the area.
C.
Upon determination that such proposed land use as set forth in said
plan should be subject to the requirements, rules, and regulations
of the Sewer and Water Commission, the Sewer and Water Commission
or its designated agent shall set such requirements as it deems necessary,
according to its authority, to be followed in the development of said
land, including but not limited to the requirement that the development
of said land conform to the rules and regulations of the Sewer and
Water Commission. A requirement for immediate tie-in with existing
sewers and a provision for future tie-in to a sewer system may be
required.
D.
In order for the Sewer and Water Commission to be satisfied that
its requirements shall be complied with, the Sewer and Water Commission
shall have a right to require a surety bond to cover such requirements,
agreements, or any other documentation it deems necessary to assure
compliance, and no certificate of occupancy shall be issued by the
building authority of the Town of Wolcott within said area until such
time as the requirements have been met.
E.
Any and all plans and any and all further information required to
be submitted to the Sewer and Water Commission shall be at the expense
of the individual, firm, partnership, corporation or other legal entity
submitting the proposed land use. Any technical or professional assistance
which the Sewer and Water Commission shall be required to engage to
assist it shall also be at the sole expense of the individual, firm,
partnership, corporation or other legal entity submitting the proposed
land use. The developer shall provide the Sewer Department with sufficient
funds to cover the Town's costs. The amount shall be determined by
the Town. Any surplus will be refunded.
A.
A contractor must be duly licensed by the State of Connecticut to
install and repair sewers or building sewers.
B.
A permit for any connection to a sewer shall be obtained from the
Sewer and Water Commission or its authorized agent. This permit shall
specify residential, commercial, apartment or industrial waste, the
name and address of the owner, the location of the sewer connection
and the name and address of the contractor to whom it is issued. The
permit application shall be supplemented by any plans, specifications
or other information considered pertinent in the judgment of the Engineer.
Application approvals will expire one year after issuance. Permit
extensions will be reviewed on a case-by-case basis by the Commission.
Any changes to the plans shall make the permit void unless approved
by the Commission.
C.
The owner is responsible for obtaining all state approvals, including
but not limited to the Connecticut Department of Energy Environmental
Protection (DEEP), Department of Public Health (DPH) and/or Department
of Transportation (DOT). Approvals from the City of Waterbury may
also be required. No work shall begin until all permits have been
obtained. Floor drains, oil/water separators and grease traps shall
be approved by the state and receiving municipality (City of Waterbury).
The owner shall provide copies of permits to the Town.
D.
All facilities where food preparation occurs shall comply with the state regulations for the handling of fats, oils and grease (FOG). Specifically, Class III and Class IV food service facilities, as defined in Section 19-13-B42 of the Public Health Code, must comply with the General Permit for the Discharge of Wastewater Associated with Food Preparation Establishments. Refer to § 425-14 of these regulations.
E.
Fees for the permits, including inspection fees, as outlined herein,
shall be established by the Sewer and Water Commission. Refer to the
fee schedule.
A.
Insurance requirements. The contractor shall be protected by and
shall pay the premium on policies of insurance coverage for public
liability. Said policies are to be issued by an insurance company
licensed in the State of Connecticut. Insurance requirements are stipulated
by the Town of Wolcott and are subject to change. The current requirements
are public liability insurance, including contractual liability and
completed operations coverage for bodily injury and property damage,
in an amount no less than $1,000,000 per occurrence and $2,000,000
annual aggregate; automobile liability insurance in an amount no less
than $1,000,000, with combined single limit for bodily injury and
property damage; workers compensation insurance as required by state
law; employers liability insurance of $1,000,000 per occurrence; excess
umbrella liability insurance of $3,000,000; and a maximum deductible
per policy of $5,000. Special coverage for blasting shall be provided
when needed. All of the above policies will be endorsed to include
a thirty-day prior notice of cancellation, termination, or modification
to the Town of Wolcott. All insurance policies shall name the Town
of Wolcott, its officials, employees, agents, and servants of the
aforementioned as additional insureds. Copies of the above policies
must be received in the Town of Wolcott Finance Office prior to any
contractor performing any work on Town of Wolcott property. Certificates
of insurance shall also be provided to the Sewer and Water Commission
before any work begins.
B.
Bond requirements. The contractor shall provide the Sewer Department
with a performance bond in an amount deemed adequate by the Department
for the faithful performance and completion of the work contemplated.
(1)
The
bond may be:
(a)
Issued by an approved security company licensed in the State of Connecticut;
or
(b)
In the form of a certified check made payable to the Town of Wolcott
Sewer Department; or
(c)
A savings passbook with a signed withdrawal slip for a joint account
in the name of the Town and the applicant; or
(d)
An irrevocable letter of credit from a bank.
(2)
Said
performance bond shall not exceed one year, unless an extension of
time is applied for by the contractor and granted by the Department.
(3)
Upon
written request of the applicant for the reduction or release of the
bond, an inspection shall be performed and determination made that
work was satisfactorily completed. Before release of any bond:
C.
Liability for costs and expenses. All costs and expenses incidental
to the installation, connection and maintenance of each building sewer
and/or building pump connection shall be borne by the owner and the
issuance of a permit shall be contingent upon the owner indemnifying
the Town and/or Commission against any loss or damage that may be
caused, directly or indirectly, by the installation of the building
sewer and/or building pump connection.
A.
The contractor or his agent shall under no circumstances start work on a sewer or building sewer project until the provisions of §§ 425-3, 425-4 and 425-5 are fulfilled and required permits are obtained. These permits are to be available at the site of the work during its continuance for inspection by agents of the Sewer and Water Commission.
B.
All work performed under the provisions of these rules and regulations
shall be subject to the inspection and approval of an inspector. The
contractor shall provide safe access for each inspection. Any work
completed without a permit or prior notification to the inspector
may be rejected. At the time of discovery, all fees and charges will
be back-charged to the date or estimated date of connection.
C.
Maintenance of traffic. At least one-way traffic shall be maintained
in roads at all times. Under unusual circumstances, the Town or its
designated official may, in writing, permit the temporary closing
of a road, in which case the contractor shall, prior to such closing,
notify the Police and Fire Departments and the Town of the location
of, and approximate duration of, such closing and shall again notify
these departments when the road is reopened to traffic. A traffic
controller or police officer, as required by the Police Department,
shall be provided at the contractor's expense when fewer than two
lanes of traffic are maintained or when necessary or advisable in
the opinion of the Police Department.
D.
Adequate barricades and, when necessary in the opinion of the Engineer,
inspector, or an authorized police official, lights and red flags
shall be erected and maintained in the street until all work is completed.
E.
The contractor shall schedule his hours of work so as not to allow
open trench conditions on Saturdays, Sundays or holidays, nor at any
other time in excess of 48 hours without special permission from the
Engineer.
F.
The contractor shall schedule work for a normal work day so that
the work may be inspected. Arrangements shall be made in advance with
the inspector when work is to be done outside the normal work day
and the contractor shall pay for any overtime inspection costs. The
contractor shall give the inspector two days' notice before any laying
of any building sewer pipe.
G.
The contractor is responsible for complying with all OSHA requirements.
H.
The quality of the sewer or building sewer installation shall be
the responsibility of the contractor. It shall not rest with the inspector.
I.
All buried piping shall be supported throughout its entire length.
A.
The Town shall furnish to the developer, in writing, the Town's specifications
and standard details and its bond and liability insurance requirements
for the construction and installation of public sewers.
B.
The developer shall prepare at his expense and submit to the Sewer
and Water Commission for its approval all drawings required for the
construction and installation of sewers. All such drawings shall be
drawn to a horizontal scale of one inch equals 40 feet with profiles
drawn at a scale of one inch equals 40 feet horizontal and one inch
equals four feet vertical, and each shall bear the seal of a Connecticut
registered professional engineer.
C.
Proposed sewers must be located within public road rights-of-way.
If it is necessary to locate sewers outside the right-of-way, the
developer shall demonstrate to the Commission that locating the sewers
in these areas is necessary. The Commission will require special provisions
for the construction of off-road sewers.
D.
Except as otherwise provided in this section, the developer shall
provide an estimate for constructing and installing the sewers prepared
by a professional engineer. The estimate shall be submitted to the
inspector for approval. At his request, the developer may be permitted
by the Sewer and Water Commission to construct and install the sewers
with his own forces, provided he shall fulfill all of the obligations
of a contractor set forth in these rules and regulations.
E.
The developer shall be responsible for:
(1)
The
contractor's construction and installation of the sewers in connection
with the specifications, details, drawings, and proposals approved
by the Sewer and Water Commission; and
(2)
The
contractor's compliance with all applicable ordinances, rules, and
regulations of the Town pertaining to the opening of public highways
and streets; and
(3)
The
contractor providing any and all bonds required.
F.
The developer shall provide the Sewer Department with a sufficient
amount of funds to cover the Town's engineering, supervision and inspection
costs and expenses incurred in connection with the approval, construction,
and installation of the sewers. The amount shall be determined by
the Department. If additional funds are required, the developer shall
provide the Town with additional funds within 48 hours of the request.
Upon completion and acceptance of the sewers, any surplus funds will
be returned to the developer. The Town's costs shall be based on an
hourly basis and expenses.
G.
Construction and installation of the sewers shall not be commenced
until the developer is in receipt of written authorization from the
inspector, which authorization shall not be given until the inspector
is satisfied that all requirements of the developer's contract with
the Town have been satisfied and all necessary bonds, insurance, and
permits have been obtained and are in force and effect.
H.
The developer shall give the inspector and Town immediate written
notice of the commencement of actual construction and installation
of sewers.
I.
The contractor shall employ a Connecticut professional land surveyor
to establish all lines and grades for construction and installation
of the sewers, subject to verification at any time and from time to
time by the inspector. Upon the request of the inspector, the developer
shall provide needed measurements in the field to complete inspections.
This work shall be at the developer's expense.
J.
No opening into any existing portion of the public sewer system of
the Town shall be made except in the presence of the inspector. All
materials installed and work performed under the provisions of these
rules and regulations shall be subject to the inspection and approval
of the inspector, and the inspector shall be afforded safe access
for inspection purposes.
K.
If the sewers are not constructed and installed to the satisfaction
of the inspector in accordance with the specifications, details, drawings
and proposal approved by the Sewer and Water Commission and the inspector,
the Town may plug or disconnect the sewers at the point of their connection
to the existing public sewer system of the Town and may continue such
stoppage or disconnection until the sewers have been so constructed
and installed.
L.
When the sewers as constructed and installed have been approved in writing by the engineer and "as built" plans drawn to the scale specified in § 425-7B of these rules and regulations in reproducible form, each bearing the seal of a Connecticut registered professional engineer and licensed surveyor and showing complete details of the sewers and all their appurtenances, have been presented to the Engineer, the sewers shall be accepted by the Sewer and Water Commission as part of the public sewer system of the Town. Upon approval of the as-built plans, the developer shall provide the Town with three paper copies, one Mylar, and one digital copy (PDF) of the plans. To ensure that the format is acceptable, as-built drawing requirements are in printed format and can be obtained from the Sewer Department.
M.
If the public sewers fall outside the public road right-of-way, an
easement in favor of the Town shall be provided. This easement shall
be in a form acceptable to the Town's legal counsel. The developer
shall provide the Town with a deed with a metes and bounds description
and a Mylar easement map. The map shall be prepared by a Connecticut
licensed surveyor. Upon the Town's approval of the easement document,
the developer shall file the deed and map on the land records and
provide the Sewer Department with a copy of the deed stamped by the
Town Clerk. Sanitary sewer easements must be a minimum 25 feet wide
but additional width may be required for special situations.
N.
Notwithstanding any acceptance of the sewers aforesaid, the developer
shall continue to be responsible for the satisfactory operation and
maintenance of the sewers until other related construction has been
completed and all of the development has been accepted by the Town.
O.
Sewers will not be accepted by the Town until as-built drawings have
been approved and easements have been executed.
P.
All sanitary sewer easements must remain fully accessible at all
times to ensure access for repairs and maintenance. At no time shall
any building of any structure be permitted on any sewer easement.
A.
A separate, independent building sewer shall be provided for every
building; except where one building stands at the rear of another
on an interior lot and no private sewer is available or can be constructed
to the rear building through an adjoining alley, courtyard, or driveway,
the building sewer from the front building may be extended to the
rear building and the whole considered as one building sewer. All
state permits must be obtained where more than one building is connected
to a building sewer.
B.
The owner shall submit to the inspector for his approval plans prepared
by a professional engineer of the proposed building sewer installation
for all multifamily, commercial, and industrial buildings. Plans and
calculations for required oil/water separators and grease traps shall
also be submitted.
C.
Old building sewers may be used in connection with new buildings
only when they are found on examination and test by the inspector
to meet all requirements of this chapter. An internal video inspection
is required. A copy of the video shall be provided to the inspector.
D.
No person shall make connection of roof downspouts, sump pumps, foundation
drains, area drains, or other sources of surface runoff or groundwater
to a building sewer or building drain which is in turn connected directly
or indirectly to a public sanitary sewer.
E.
The requirements of local plumbing and building codes shall be observed
with respect to piping and fixtures inside or immediately adjacent
to buildings and within the area of jurisdiction of said codes, subject
only to the general requirements of these rules and regulations. Pipe
more than five feet outside of the inner walls of any building or
similar structure shall conform to the requirements of these rules
and regulations as to permits, materials and workmanship.
F.
Any abandonment of existing wells or on-site sewage disposal systems
shall be in accordance with the Public Health Code and approved by
the Chesprocott Health District.
A.
All sewer pipes shall be of ductile iron pipe (DIP) cement-lined
Class 52, reinforced concrete pipe (RCP), or polyvinyl chloride (PVC)
SDR-35 (ASTM D3034-73) of the sizes and classes as shown on the plans
and approved by the Engineer. The contractor shall submit to the Engineer
for approval the manufacturer's name with details of the pipe, fittings,
and joints. Each section of pipe delivered to the job site shall be
marked with the manufacturer's name, the date of manufacture and the
pipe class.
B.
Sanitary sewers shall have minimum three feet of cover. The Town
may require mains exceeding 15 feet in depth to be upgraded to pressure-rated
pipe.
C.
Sanitary sewers shall maintain minimum ten-foot separation from water
mains and water service connection laterals.
D.
Sewers shall cross under water mains by 18 inches. If separation
is less, sewer pipe shall be upgraded to pressure-rated pipe and encased
in concrete.
E.
PVC gravity sewers and fittings shall be SDR-35 PVC conforming to
ASTM D3034 with integral bell "push-on" type rubber-gasketed joints
conforming to ASTM D3212.
F.
RCP shall confirm to WWA C302 with steel reinforcing, design strength
and strength testing as per ASTM C-76. All concrete sewer pipes shall
be bell-and-spigot or tongue-and-groove expansion joint.
G.
Bituminous lining.
(1)
All concrete pipe shall be coated on the inside with Koppers "Super
Service Black" bitumastic coating. The Bitumastic Super Service Black
shall conform to the following requirements:
(2)
The interior of each pipe shall be given two coats of Super Service
Black. It shall be applied with spray equipment in accordance with
the manufacturer's recommendations. The first coat shall dry to touch
in from three hours to six hours under normal atmospheric conditions.
The second coat shall be applied not less than 24 hours nor more than
48 hours after the first coat is applied. The coating shall cover
evenly the entire interior of the pipe, the bell or groove, and exterior
of the spigot or tongue.
H.
Joints shall conform to the requirements of ASTM C-443 amended to
date.
(1)
Each length of pipe shall be provided with bell-and-spigot or tongue-and-groove
ends formed in the concrete wall which shall enclose the gasket on
all surfaces when the joint is in final position. Tongue or spigot
ends of pipe shall be a grooved type to hold the O-ring gasket in
place or have a precast insert.
(2)
All surfaces on which the rubber gasket may bear during closure of
the joint and at any degree of partial closure, except within the
gasket groove, shall form an angle of not more than 2° with the
longitudinal axis of the pipe. The spigot surface shall have a retaining
groove so that the gasket, when compressed, will be enclosed on all
four sides. The gasket shall be the sole element utilized in sealing
the joint.
(3)
The gasket, when confined within the preformed retaining groove,
shall not be stretched more than 30% of its original length. Gaskets
shall be of such size that when the inner surface of the bell and
the outer surface of the spigot come into contact at some point in
their periphery, the deformation in the gasket shall not exceed 50%
at the point of contact and, at the diametrically opposite points
across the pipe, shall not be less than 10% of the standard gasket
diameter. Stretched gasket diameters shall be calculated as 1/2% reduction
in diameter for each 1% stretch actually used. Determination of percent
of gasket deformation in an off-center joint shall be based on the
most unfavorable limits of the pipe manufacturer's tolerances. To
ensure conformance with the above joint design requirements, all gaskets
must be volumetrically measured.
(4)
Prior to acceptance of the pipe, manufacturers must submit joint
drawings showing all pertinent joint dimensions, tolerance limits,
gasket nominal diameter, and allowable gasket dimensional tolerances.
The manufacturer must also submit detailed calculations to show that
the above joint design requirements are reasonably attained under
typically "worst" conditions. That is:
(5)
Failure of the pipe or gasket dimensions, including tolerances, to
come within the allowable dimensional limits will be cause for rejection
of the pipe.
(6)
Pipe shall not be delivered to the project until the manufacturer
demonstrates to the satisfaction of the Engineer that the manufacturer's
production methods, repair procedure and quality control measures
are sufficient to assure that all pipes meet the dimensions and tolerances
shown on the manufacturer's calculations required above.
I.
"O" ring rubber gaskets.
(1)
All rubber gaskets shall be of circular cross section. All rubber
gaskets shall be molded or extruded and cured in such a manner that
any cross section will be dense, homogenous, and free of porosity,
blisters, pitting, and other imperfections. The gaskets shall be extruded
or molded to the specified size within a diametrical tolerance of
±1/64 inch or ±1.5% of the diameter, whichever is larger.
The rubber gasket shall be fabricated from a high-grade rubber compound.
The basic polymer shall be natural rubber, synthetic rubber, or a
blend of both acceptable to the purchaser.
(2)
The compound used shall conform to the requirements for physical
properties of rubber gaskets as given in Section 4.10.1 of ASTM C-361.
J.
Methods of test. The properties enumerated in Section 4.10.1 of ASTM
C-361 shall be determined from tests performed from the cord. Tests
for determination of the physical properties of the rubber cord shall
be made in accordance with the test procedures outlined in Section
4.10.2 of ASTM C-361. Prior to acceptance of the pipe, manufacturers
must submit certified test reports which show that the rubber cord
used meets all requirements for rubber gaskets given above.
K.
Elbows, where indicated on the plans, shall be segmented or mitred
bends in accordance with the details on the plans or as specified
elsewhere. The removal of concrete to achieve the bend or mitre shall
be made while the concrete is still green; the concrete will be cured.
The reinforcement will then be cut and welded back together with the
halves held at the proper angle and an approved epoxy mortar applied
to fully fill the gap between pipe halves to a true cylindrical surface.
Materials shall conform to those used for the reinforced concrete
sewer pipe. Joints shall be as on the main sewer pipe.
L.
Tees. Tee branches with bells to take connections shall be integrally
formed or cast into the pipe or constructed in a method similar to
that for elbows with rewelded reinforcement and epoxy mortar. Additional
steel reinforcement surrounding the bell or tees shall be placed in
accordance with manufacturer's details, subject to the approval of
the Engineer.
M.
Increasers-reducers. Materials shall be in accordance with the reinforced
concrete sanitary sewer pipe with the exception that the increasers-reducers
shall be concentric about the horizontal axis and symmetrical about
the vertical axis of the pipe, with uniform and gradual varying dimensions
to/from the larger-diameter pipe from/to the smaller-diameter pipe.
Joints shall be as those of the main sewer pipe.
N.
Cast-iron sewer pipe (CIP) shall conform to AWWA Specification C-106,
Class Wall unless otherwise specified.
O.
Joints shall be rubber gasket joints of either the push-on type or
mechanical joint unless otherwise specified on the plans. These joints
shall conform to AWWA Specification C-111 and as approved by the Engineer.
P.
Fittings shall be called for on the plans or required to complete
the work and shall conform to the requirements of AWWA Specification
C-110 and as approved by the inspector. Joints on all fittings shall
be of the same type as used on the main pipeline unless otherwise
noted on the plans.
Q.
Cement lining.
(1)
Except as otherwise specified, all cast-iron pipe and fittings shall
be cement-lined in accordance with AWWA Standard C-104.
(2)
Cement lining for pipe and fittings shall conform to the requirements
of American Standard A21.4, latest revision, with a minimum thickness
of the lining of 1/8 inch.
(3)
Cast-iron fittings shall be in accordance with American Standard
A21.10 for cast-iron fittings and shall be cement-lined.
R.
Precast concrete manhole sections.
(1)
Precast concrete sections shall conform to the ASTM Specifications
for Precast Reinforced Concrete manhole sections, Designation C478-72,
with "o" ring joints, conforming to ASTM 361.
(2)
Manhole steps for precast concrete section manholes shall project
six inches inside manhole and shall be aluminum safety type cast in
manhole sections 12 inches on center. Prior to placing the steps into
the section forms, the parts of the steps that are to be embedded
in concrete shall be thoroughly cleaned and given a protective coating
of an approved heavy-bodied, bituminous material.
(3)
Joints between poured concrete manhole base and precast concrete
manhole section shall be sealed with rubber "O" ring gasket. Precast
concrete manhole bases will be allowed as an alternative to poured
concrete bases only in special cases.
S.
Brick masonry. All brick used in the construction of manholes shall
conform to the provisions of ASTM Specification C-32, Grade MA Sewer
Brick. The outside of all brick work below the ground surface level
shall be covered with a layer of mortar of not less than one inch
in thickness and bituminous-coated.
T.
Manhole frames and covers. Manhole frames and covers for each manhole
shall be bituminous-coated cast iron with a minimum weight of 575
pounds and shall conform to the details of the standard frame and
cover used for sanitary sewers in the Town of Wolcott.
U.
Manholes located off roadways shall be equipped with two locking
nuts for securing cover. Vented covers shall be provided at the high-point
manholes in each street.
A.
Pipes shall be cast- or ductile iron or polyvinyl chloride (PVC).
Iron pipe shall be extra-heavy or service-weight cast-iron pipe of
four-inch or six-inch inside diameter. Pipes for one-, two-, and three-family
dwellings shall consist of four-inch cast-iron pipe, extra-heavy or
service -weight. All larger multiple-family dwellings, industrial,
commercial, office complexes shall have a minimum pipe size of six
inches and comply with the following.
B.
Maximum number of fixture units that may be connected to any portion
of the building sewer:
|
Fall per Foot
| ||||
|---|---|---|---|---|
|
Pipe Diameter
(inches)
|
1/16 Inch
|
1/8 Inch
|
1/4 Inch
|
1/2 Inch
|
|
4
|
180
|
216
|
250
| |
|
6
|
700
|
840
|
1,000
| |
|
8
|
1,400
|
1,600
|
1,920
|
2,300
|
C.
All sewers shall be designed and constructed to give mean velocities,
when flowing full, of not less than 2.0 feet per second, based upon
Manning's formula.
D.
All cast- and ductile iron pipe and fittings shall meet the latest
specifications of the American Society of Testing Materials and the
Cast Iron Pipe Institute.
E.
Iron pipe jointing method shall consist of braided or twisted hemp
or oakum, with hot-poured lead or waterproof gaskets. The oakum is
first packed tightly around the annular space between the bell and
spigot of adjoining pipe. Molten lead is then poured into this space,
and finally the lead is tamped or caulked to complete the joint. Neoprene
joint gaskets may be used. Gasket ring fits into head ring of hub;
gasket lip overhangs. Both seals inside the gasket must be lubricated.
Fittings and pipe may be driven, pulled, pushed or bounced into hub.
Spigot must pass through both seals and seat.
(1)
No-hub systems may be used. Detach neoprene gasket from the shield.
Slide shield around the spigots to be joined. Position the gasket
on spigot. Push spigots together inside sleeve until both are firmly
seated against separator ring. Slide the steel shield into position
directly over sleeve.
(2)
Be sure spigots are touching separator ring. Tighten both screws
alternately until both are tight at least four foot-pounds torque.
Shield is made of Type 304 stainless steel. A torque wrench shall
be used to tighten all clamps on all shields.
F.
Table 11.4.2 of the National Plumbing Code ASA A40.8 1955 shall be
referred to for fixture unit valves.
G.
PVC pipe shall be unplasticized PVC plastic gravity sewer pipe with
integral wall bell and spigot joints for the conveyance of domestic
sewage.
(1)
Pipe and fittings shall meet extra-strength minimum of SDR-35 of
the requirements of ASTM Specification D3034-73 or Virgin Type 1.
Grade 1, polyvinyl chloride compounds as defined and described in
ASTM Specification D-1734 for "Rigid Poly (Vinyl Chloride) Compounds
and Chlorinated Poly (Vinyl Chloride) Compounds."
(2)
Joints shall be the bell and spigot type subject to the approval
of the Engineer, sealed with a rubber "O" ring gasket, and when assembled
must be able to withstand a hydraulic pressure internally of at least
10 psi.
(3)
Lengths and joints. Pipe lengths shall not exceed 13 feet for eight-inch
and larger pipe. Each length of pipe shall have a bell and spigot
or shall have furnished with it a separate jointing sleeve or coupling
with rubber rings compressed into place to make a watertight closure.
The rubber rings shall consist of a molded and vulcanized rubber compound
resistant to common ingredients of groundwater and sewage and which
will endure permanently under the conditions likely to be imposed
by this use, and shall conform to ASTM Specification D-1869 to date.
H.
Use of asbestos cement pipe is prohibited.
A.
Sewers shall be laid with uniform slope between manholes.
B.
Sewers on 20% slopes or greater shall be avoided where possible.
If required, pipes shall be securely anchored with concrete or equal.
A professional engineer shall determine spacing of anchors.
C.
Sewers shall be laid with straight alignment between manholes. Alignment
shall be checked by either laser beam or lamping.
D.
When a smaller sewer joins a larger one, the invert of the larger
one should be lowered sufficiently to maintain the same energy gradient.
E.
The spacing between manholes shall not exceed 300 feet.
F.
Drainage pipes and box culverts. Drainage pipes and box culverts
shall be located at least five feet horizontally from sewer pipes,
and at least 18 inches vertically from sewer pipes. Storm drain crossings
must be reviewed on a case-by-case basis by the Department in order
to ensure that future maintenance is possible. In some cases, the
Department may require additional manholes and sections of sewer pipe
to avoid crossing drainage pipes and box culverts.
G.
Trench excavations.
(1)
Trenching shall proceed in accordance with the latest manual on safety
in construction as published by the Associated General Contractors
and OSHA. Excavation shall conform to the form and grade of the bottom
of the pipe or the foundation required. Special care must be given
to the forming of the required bedding. To accomplish this, no earth
shall be excavated by machinery nearer than six inches to the finished
subgrade, and the last six inches of excavation in earth shall be
carefully removed by hand labor to the exact lines and grade required,
immediately prior to laying pipe or underdrain or bottom of structure.
(2)
If the excavation is carried lower than the required grade, the extra
space shall be filled up to the proper grade with well-compacted sand,
gravel, broken stone, or concrete.
(3)
The width of existing paved street surface, cut or disturbed, shall
be kept as small as practicable to accommodate the work.
H.
Rock excavation.
(1)
Rock shall be excavated well in advance of the construction of sewers,
pipe lines, or other structures to ensure that all necessary blasting
is kept at a reasonable distance from newly completed work. On straight-away
sewer laying, rock excavation shall not be done less than 20 feet
in advance of pipe laying or construction of other structures.
(2)
Special care shall be taken when rock to be excavated is within six
feet of existing utilities.
(3)
If explosives are used, all requirements of local and state laws
and regulations must be compiled with and all necessary permits and
licenses obtained by the contractor at his expense.
I.
Replacing unsuitable foundations. Where the soil in the subgrade
is found to be soft, loose, or unsuitable as a foundation base for
the sewer or its appurtenant structures, it shall be removed to such
a depth and width as necessary, and shall be replaced with a suitable
crushed stone which shall have sound durable particles free from vegetable
or other deleterious substances. All crushed stone shall have not
more than 10% by weight passing a No. 4 mesh sieve.
J.
Sheeting.
(1)
Whenever the presence of incipient slides is noted during excavation
and the nature of the ground and subsurface soil conditions, depth
of excavation, proximity of traffic require, and whenever the proximity
of other pipes, ducts, pavements, conduits, drains, or structures
require it, the contractor shall furnish and set in place sheeting,
shoring, timbering, and bracing sufficient to maintain openings or
proper width in which to build the structures and sewers required.
(2)
No sheeting or shoring shall be removed which is in contact with
any pipe, conduit, or structure, or which has been driven below the
invert of any sewer being constructed. Sheeting driven below the invert
of the sewer shall be cut off one foot above the pipe.
K.
Dewatering.
(1)
All trench excavation and pipe laying shall be performed under dry
conditions. No masonry of any kind shall be placed in water, and no
water shall be allowed to flow over or rise up on fresh concrete.
(2)
A six-inch minimum layer of crushed stone of suitable size shall
be placed to serve as a drain at all locations where water is present
in the trench. In addition, the contractor shall use pumps, wells,
underdrains, or any other effective means to assure the above.
L.
Laying sewer pipe.
(1)
All pipe, when in place, shall be precisely true to the lines and
grade specified on the approved construction plans. All pipe shall
be laid upgrade wherever possible without any breaks in the line between
manholes or other structures.
(2)
Where underdrain, special foundation, special bedding or haunching
is not required, pipe shall be bedded in conformity with Class "C"
bedding as defined by the American Concrete Pipe Association. The
grade of the soil base shall be measured and checked at least once
for each length of pipe, and in any case at intervals of not more
than four feet apart, immediately before pipe is laid upon it. The
base must be such that the barrel of the pipe will be evenly supported
for its entire length, except for a distance of not over four inches
outside each end of each pipe joint. In general, pipe must not be
supported by lumps of soil, sills, shims, etc. Bed must be formed
to correct grade before pipe is placed on it. Pushing fine material
under any pipe laying on its bed, in order to bring it up to grade
or line, will not be permitted.
(3)
Where foundation of crushed stone or a stone drain is required, the
top of the gravel or stone shall be brought carefully to the proper
grade for the barrel of the pipe and shall be well tamped or compacted.
(4)
In trenches excavated through rock, the rock shall be removed so
that no projecting points or spurs or rock project within nine inches
of the sides of the pipe or six inches of the bottom of the pipe.
The bottom of the trench will then be filled with crushed stone and
brought to grade as described above.
(5)
Suitable devices must be used to force pipes together so that they
will fit and will satisfy the manufacturer's requirements. Details
of gasket, attachment, and joint formation will, in general, follow
directions of manufacturer of the joint material and of the pipe.
(6)
Connections to existing manholes will be made with a minimum amount
of interference to flow of sewage in existing system. Upon completion
of the connection operation, the inside of the manhole shall be left
in a clean, smooth condition. The opening around the new pipe shall
be sealed with brick masonry and parged on its outside surface. Care
shall be exercised in backfilling around the new pipe to ensure that
there is no settlement of the pipe adjacent to the manhole.
(7)
Open ends of sewers or pipe under construction shall be kept closed
with temporary stoppers at night and at other times when they need
not be open in order to exclude foreign matter and flows of water
which might be detrimental to newly made joints or other portions
of the work under construction. Sewer must be clean and free from
sediment and foreign objects when completed. The contractor may be
required to clean sewers that may have become obstructed, in part
or whole, by sediment or foreign materials entering through his work.
M.
Backfilling.
(1)
Immediately after the pipes have been laid, set to line and grade
and jointed, backfill shall be carefully placed tightly and tamped
on each side and over the top of the pipe. Care must be taken in placing
and tamping the backfill so as not to disturb or damage the pipe,
connections, or joints. Fine granular material shall be placed on
both sides of pipe in thin layers and well tamped. Space under joints
must be completely filled. Suitable tools shall be used to ram the
fill tightly under and against the rounded sides of the pipe so that
all space on each side of each pipe is entirely filled with well-compacted
material.
(2)
Backfill in streets and highways shall be compacted to a minimum
density of 90% of the maximum dry density as determined by AASHTO
T-180, Method D. In roads where excavated material contains clay,
mud, or silt, the excavated material will be removed from the job
and replaced with suitable gravel.
(3)
Compaction of trench backfills in streets or other paved areas shall
be required and may be accomplished by mechanical tamping or water
jetting. Water jetting may be used to consolidate backfill where trenches
have been excavated in sand, gravel, or any similar material which
is free draining, but shall not be used to consolidate backfill in
any trench excavated in impervious material such as clay.
(4)
Depending on the material and weather conditions, it may be necessary
to supplement mechanical compaction methods by control of moisture
in the material.
N.
When the contractor has completely refilled a trench, such portion
of the trench that is in the street limits shall be maintained in
a safe condition for public travel for a period of time not to exceed
180 days or until permanent pavement is installed. The inspector shall
be the sole judge of what constitutes a condition comfortable for
public travel, and the contractor shall give his immediate attention
to the correction of any settlements or bumps in the trench or area
adjacent thereto. If the contractor shall not have corrected such
settlements or bumps within four hours of notification, the Town will
make such repairs as the inspector may deem necessary and the cost
of such repairs will be assessed against the contractor. A cold-patch
surface will be placed immediately on the excavated portions of the
road and maintained until a permanent surface is constructed. The
permanent surface must be a minimum of eight inches of gravel, nine
inches of processed stone, and three inches of bituminous concrete
compacted and rolled in two layers.
O.
Leakage.
(1)
The leakage into the sanitary sewer system shall not exceed 150 gallons
per inch of diameter per mile of pipe per 24 hours; except on the
public water supply watershed areas where the leakage shall not exceed
50 gallons per inch of diameter per mile of pipe per 24 hours.
(2)
The contractor shall be responsible for performing the necessary
tests to ascertain that the infiltration is within the above specified
limits.
(a)
Infiltration test: to be used where groundwater is one foot
or more above the top of the pipe.
(b)
Exfiltration: to be used where groundwater is less than one
foot above the top of the pipe. The pipe is plugged at the lower end
and the amount of water which must be added to maintain a head of
two feet above the top of the pipe in the upper manhole is measured.
(c)
Exfiltration: use of pneumatic testing system in conformance
with the low-pressure air test for sanitary sewers, as outlined in
the ASCE Proceedings, Volume 90 No. SA2, April, 1964.
(3)
Should the sections under test fail to meet the requirements, the
contractor shall locate and repair leaks and retest.
A.
Work on building sewers shall in every case proceed from the sewer
towards the structure involved. Any variations in this procedure shall
require the permission of the inspector. Pipe laying shall proceed
in accordance with the best accepted practices true to line and grade.
B.
All paved roads, driveways, and sidewalks shall be saw cut prior
to excavation, providing a straight, strong edge.
C.
The trench shall be of ample width at the bottom to accommodate the
pipe to be placed and any work on the structure that conditions necessitate.
Tunneling under existing structures may be permitted when approved
in writing by the inspector, but in no case shall any tunnel exceed
10 feet in length.
E.
When sheeting is necessary to ensure proper installation in consideration
of the safety of personnel and the public, the contractor shall furnish
and place such sheeting in accordance with good practice and OSHA.
F.
Where water is encountered in a trench, sufficient sump pumps shall
be positioned and adequate pumping equipment made available so that
the installation of any building sewer or appurtenance shall be done
in dry conditions. In no event shall water be allowed to enter the
sewer or building sewer from the trench. Required erosion controls
shall be installed and maintained as required.
G.
Water service and building sewer pipes shall be laid in separate
trenches per the Public Health Code.
H.
Building sewer pipes shall be laid in locations that comply with
the Public Health Code requirements for separation from water supply
wells.
I.
Where a hub location is given in a permit, such location shall be
used for the location of the connection. If a deviation from the connection
location indicated on the permit is desired, such deviation shall
first be requested in writing by the owner of record of the property
involved and shall further be approved by the Engineer. A sewer connection
location is an indication of location in the field. If a connection
location as indicated is not found, a tap-in will be permitted. The
Sewer and Water Commission assumes no liability for any inaccuracy
in any map regarding the location of any connection.
J.
All pipes must be cleaned before laying. This can be accomplished
by swabbing.
K.
When connections are made to hubs, 1/8 bends shall be used to align
the connections.
L.
Cleanouts must be provided at all changes in alignment and on straight
runs at intervals not to exceed 75 feet. An exterior cleanout shall
be required approximately 10 feet from the structure served where
the inside cleanout is less than two feet above the lowest floor of
the structure served.
M.
When the material at the base of a trench is unsuitable as a foundation
for the building sewer pipe, such material shall be removed and replaced
with crushed stone or gravel not containing pieces larger than three
inches in diameter. If an excavation is deeper than the desired depth,
the trench shall be brought to grade with compacted crushed stone
or gravel not containing pieces larger than three inches in diameter.
In no case may loose fill from an excavation be used to bring a trench
up to the pipe grade.
N.
Backfilling. If at any time during excavation the material being
excavated is not suitable for backfill in the opinion of any inspector,
such material shall immediately be removed from the site by the contractor
at his expense. Unsatisfactory material shall include, but not be
limited to, boulders, clay, muck, and frozen ground. Where unsatisfactory
material is removed, it shall be replaced by sand or gravel not containing
pieces larger than three inches in diameter in accordance with CDOT
Form 816. All backfill shall be free of wood, construction debris,
boulders, clay, muck, or frozen material. All backfill shall be compacted
around the pipe. Under no circumstances shall backfill be permitted
around and over the pipe until the pipe, joints, lines, elevations,
and workmanship have been inspected and approved by the inspector
or his designate.
A.
Any building sewer which is installed to serve a facility below the
first-floor elevation and which cannot use gravity flow to discharge
into the sewer may be subject to back-up and flooding from the sewer
system. If the owner installs such a building sewer with a pump system,
the owner will be responsible for any and all damage that may occur
from backups and flooding of his property.
B.
All building sewer systems requiring the use of pumps and force mains
shall be designed by a professional engineer licensed in the State
of Connecticut. The pump system shall include: a twenty-four-hour-capacity
wet well, automatic on-off controls, high-level alarm, check valves,
minimum 1 1/4 inch diameter force main. The size and type of
pump shall be based upon flow and head requirements. All multifamily
pump systems shall contain two alternating pumps.
C.
A separate and independent building pump connection shall be provided
for each building. Any building that requires the use of a pump, or
the first-floor elevation of which is below the gutter-line elevation
of the roadway in which the sewer main is located, shall have installed
on the building sewer connection an outside air vent and a backwater
valve (check valve).
D.
Pumping equipment, subject to review and approval, may be a 1) grinder
pump, 2) submersible pump (non-clog type), or 3) pneumatic ejector
system as selected by the owner. The pneumatic ejector system shall
be used only in conjunction with a septic tank. The system shall be
capable of providing a minimum of two feet per second and a maximum
of five feet per second velocity in the discharge piping. The system
shall include a storage tank with capacity sufficient to handle at
least 24 hours' flow during outage of the pump. The system shall also
be equipped with suitable check valves and shutoff valves to prevent
backflow from the discharge piping to the storage tank and/or wet
well. The discharge piping shall have air release valves as required
at the high points in the piping.
E.
Discharge piping from the pump installation to the building property
line shall be PVC pipe, Series SDR 21 or SDR 26; DIP, Class 52 or
higher; or polyethylene (PE) pipe, PE 2306, all with a pressure rating
of 100 pounds per square inch.
F.
The minimum cover for the discharge pipe shall be four feet. The
pipe shall be placed on six inches of compacted granular material.
The granular material shall be carried a minimum of three inches above
the top of the pipe and compacted. The remainder of the trench may
be back-filled with excavated material, tamping in twelve-inch layers.
The discharge pipe shall be laid on a continuous upgrade from the
building to the terminal point as closely as practical. Where changes
in grade are necessary, air release valves or air release vacuum valves
may be required.
G.
PE pipe shall be joined with nylon insert couplings and four stainless
steel Loxon Straps (two on each end of the pipe) and wrapped with
polyethylene material. No joints shall be wrapped before they have
been inspected by the Sewer and Water Department. The joining of PVC
pipe shall be by butt fusion. The ductile iron pipe shall have bell-and-spigot
joints with an approved rubber gasket. No joints shall be covered
with earth until they have been inspected.
H.
Where the Town has installed a six-inch service connection to the
owner's property line, an approved adapter and FERNCO couplings shall
be used to join the pressure and gravity pipes at the end of the service
connection and on the owner's property. Where a service connection
from the property line to the street sewer has not been constructed,
the owner shall construct a building sewer from the property line
to the public sanitary sewer in accordance with these regulations.
I.
Prior to discharge of sewage, the owner shall provide the Town with
a certification by a professional engineer or licensed plumber stating
that a start-up test and inspection of the pump station has been completed
and it has been constructed in accordance with the approved plans
and design.
A.
FOG interceptors (also known as "grease traps") shall be provided
when they are necessary for the proper handling of liquid wastes containing
fats, oil or grease in excessive amounts; provided, however, that
such interceptors shall not be required for private living quarters
or dwelling units.
B.
All newly constructed commercial or industrial buildings connected
to the municipal sewer system shall be served by an external FOG interceptor.
The design for such FOG interceptor shall be submitted for approval
by the Sewer and Water Commission.
C.
All existing commercial or industrial buildings that house food preparation
establishments, including all Class III and Class IV food service
establishments as defined under Section 19-13-B42 of the Public Health
Code and including all restaurants, hotel, hospital, school and church
kitchens, fast-food take-out, cafeterias, catering establishments,
bars and clubs, shall be served by a FOG interceptor or alternate
FOG management equipment.
D.
Where installation of an external FOG interceptor is not feasible,
a regulated establishment shall install internal FOG management equipment.
The property owner shall submit a proposed design for the FOG management
equipment to the Sewer and Water Commission.
E.
Upon installation of a FOG interceptor or alternate FOG management
equipment in accordance with the approved design, the FOG interceptor
or the FOG management equipment shall be operated and maintained by
the property owner.
F.
All external FOG interceptors shall be easily accessible for cleaning
and inspection. FOG interceptors shall be constructed of impervious,
noncorrosive materials capable of withstanding abrupt and extreme
changes in temperature, and capable of sustaining H-20 vehicle loading.
FOG interceptors shall be of substantial construction, watertight
and equipped with manhole frames and easily removable twenty-four-inch
covers which, when bolted in place, shall be watertight. Each unit
shall provide for access at each end of the chamber.
G.
An external FOG interceptor shall be installed on a separate building
sewer servicing only flows from the kitchen or food preparation areas.
Except as otherwise authorized by the authority, the inlet and outlet
piping shall be PVC ASTM D1785 Schedule 40 with rubber compression
gaskets or solvent weld couplings. The joints must meet ASTM 3212
specifications. A tee pipe fitting shall be utilized on the interceptor's
inlet and outlet pipes. The tee-pipe of the inlet and outlet shall
extend to within 12 inches of the bottom and at least five inches
above the liquid level of the tank.
A.
Any person, firm, corporation, developer, or other legal entity who
or which violates any provision of these rules and regulations shall
be liable to the Town of Wolcott for any expense, loss, or damage
which may be caused by reason of such violation.
B.
Any person violating any provision of these rules and regulations
shall be given a written notice by the inspector stating the nature
of the violation and providing a reasonable time limit for the satisfactory
correction thereof. The person shall, within the period of time stated
in such notice, correct such violation.
C.
Any person who shall continue any violation beyond the time limit provided for in Subsection B above shall be subject to such penalties as may be provided by ordinance of the Town of Wolcott.
D.
Failure of a contractor to comply with any one of these rules and
regulations shall be cause for revocation of any permit issued by
the Sewer and Water Commission or its agent. When such action is taken
by the Sewer and Water Commission, and any sewer or building sewer
work remains to be completed by the contractor, the Sewer and Water
Commission or its agent shall be empowered to complete the work or
to employ any contractor deemed competent for such completion. The
cost for such completion may be claimed against the contractor and/or
his performance bond.
E.
No person who has violated any provisions of these rules and regulations
or whose permit has been revoked as herein provided, or who has refused
or neglected to make good to the satisfaction of the Sewer and Water
Commission any defective or imperfect work, or who has refused or
neglected to pay any fees, fines, or penalties imposed under the provisions
of these rules and regulations shall receive a renewal of his permit
until all his defaults shall have been fully remedied and satisfied.
In the event of any question as to the interpretation of any
of the preceding rules and regulations, the decision of the Sewer
and Water Commission or its agents shall be final.
