[Adopted 9-10-2015 by Ord. No. 782]
A.Â
These minimum standards include specifications for inspection, repair,
and replacement of lateral sanitary sewer connections. Municipalities
within the Delaware County Regional Water Quality Control Authority's
(DELCORA's) Eastern Service Area have been requested to adopt lateral
inspection and repair/replacement time of sale ordinances as required
by the Pennsylvania Department of Environmental Protection (PADEP)
for the reduction of infiltration and inflow (I&I) into the sanitary
sewage collection system. These minimum standards include the following:
B.Â
These standards include, by reference, the conditions set forth in
the Delaware County Regional Water Quality Control Authority's (DELCORA's)
Standards, Rules, and Regulations of 2011 (as amended), the Standard
Specifications for the Construction of Sanitary Sewers and Appurtenances,
October 2000, (as amended), and in the service agreements between
the municipal authorities and the Township. Additional resources for
contractors and information regarding I&I abatement can be found
in the Private Lateral Inflow and Infiltration Elimination Project
Summary Report, June 2010, available on the DELCORA web page.
As used in this article, the following terms shall have the
meanings indicated:
Conduits or conveyances that direct clear water away from
any area within a building or on a property.
Material placed in trench from the top of the bedding to
the finish grade or sub base of pavement.
Material placed in trench to support the pipe and conduit.
The lowest horizontal piping of a building drainage system
which receives the discharge from waste, and other pipes inside the
walls of the building, and conveys it to a point approximately five
feet outside the foundation wall of the building.
Permission from the Township to undertake plumbing repairs
and repairs to the private lateral connection to the municipal sewage
collection system.
See "private lateral."
Certificate required by Chapter 103 of the Nether Providence Township Code of Ordinances.
All stormwater, rainwater, surface water, groundwater, roof
runoff, snow melt, or subsurface discharge.
A professional person skilled and experienced in repair and
replacement of private lateral sewer connections.
Gutters or similar drains from rooftops that convey clear
water away from the structure.
The final visual inspection of the private lateral by means
acceptable to the Township.
Fats, oils, and grease.
French drains, perimeter drains, or similar feature installed
for the purpose of draining clear water away from building foundations
and slabs.
Infiltration and inflow means any source or occurrence of
clear water transmission into the sanitary sewage collection system.
Conditions set forth as the minimum actions to demonstrate
adequate documentation of I&I reduction measures including maintenance,
inspections, and repairs to private lateral connections to the municipal
sewage collection system.
The local municipal sewer authority.
The professional engineer serving the local municipality.
A professional organization that has developed standardized
methods of inspecting and rating deficiencies in sanitary sewer systems.
Official written correspondence from the Township notifying
a property owner that they are not in compliance with the conditions
set forth in this article.
NASSCO certification programs that document adequate training
and expertise to perform standardized sewer system inspections.
The segment of the sanitary sewer system located on private
property and extending into a public right-of-way or public property
that connects a residence or business to the main sanitary sewer collection
system. The private lateral will include the entire length of the
connection from the house to the municipal sewage collection system.
Any real property located in Nether Providence Township.
Any individual, entity, partnership, business, corporation,
company, or other such similar entity.
The local municipal department responsible for the municipal
sanitary sewers.
Gutters or similar drains from rooftops that convey clear
water away from the structure.
Piping, lines, sewers, and connection thereto transporting
wastewater within the Township to a destination for sanitization and
treatment.
All rainwater, surface water, groundwater, roof runoff, snow
melt, or subsurface discharge.
A pump installed in a pit or depression to pump clear water
out of a basement (most typical) but can apply to pumping clear water
away from any part of a structure or area or property.
A contractor who has completed training sponsored by the
Township from time to time, which training the Township developed
in consultation with the Pennsylvania Plumbing, Heating and Cooling
Contractors Association regarding the methods of sewer lateral inspection.
[Added 4-11-2019 by Ord.
No. 809]
A triangular-shaped fitting that enables pipe lateral cleanout
in both directions.
A tight-fitting cap that can be used to seal the necessary
vents associated with private lateral plumbing. The vents shall be
manufactured to fit on the type of pipe used in the plumbing and shall
provide a tight seal against inflow of stormwater under extraordinarily
high precipitation conditions. The vent cap should be set at least
six inches above grade to preclude stormwater flow into the vent.
If the vent caps are located at the curbline or in the driveway apron
or sidewalk, they must be flush with the finished grade and tightly
sealed.
Televising or visually tracing the source of a clear water
connection to the sanitary sewer.
A.Â
Prior to the issuance of a certificate of use and occupancy for any
property within Nether Providence Township, the private lateral serving
that property shall be inspected and, if necessary, repaired or replaced
in accordance with the standards set forth in this article and a copy
of that inspection shall be provided to the Township.
B.Â
The properties meeting any of the following criteria shall be exempt
from the foregoing inspection requirement:
(1)Â
Properties serviced by private laterals installed within 10 years
of the application for a certificate of use and occupancy, with documentation
of installation date in a form acceptable to the Township Manager;
(2)Â
Properties that received a certificate of use and occupancy after
the date of this article and within five years prior to the date of
the subject application for a certificate of use and occupancy.
C.Â
The cost of repair or replacement of an inspected private lateral
shall be the responsibility of the applicant for the certificate of
use and occupancy; provided, however, that if a private lateral requires
replacement in any area in which it services multiple properties,
the following procedure shall apply:
(1)Â
The applicant for the certificate of use and occupancy shall provide
notice to the record owners of all other properties serviced by the
private lateral via certified mail with a return receipt requested.
Such notice shall provide a copy of the inspection; state the requirement
for replacement or repair; state the estimated cost of repair; and
indicate that if the owner does not respond assenting to such repair
within 14 business days of the notice the Township shall participate
with the applicant in financing the cost of the repair and will pursue
the proportionate share of such cost attributable to the owner such
procedures available under the Pennsylvania Municipal Claims Act.[1]
[1]
Editor's Note: See 53 P.S. § 7101 et seq.
(2)Â
Should any owner fail to respond within the time set forth in the notice required by Subsection C(1) above, the Township shall finance that owner's proportionate share of cost of the repair or replacement of the private lateral and pursue recovery of such costs in accordance with the Pennsylvania Municipal Claims Act.
The private lateral must be maintained to meet the following
minimum requirements:
A.Â
The private lateral shall be kept free from roots, grease deposits,
and other solids which may impede the flow or obstruct the transmission
of waste.
B.Â
All joints shall be tight and all pipes shall be sound to prevent
exfiltration by waste or infiltration by groundwater or stormwater.
C.Â
The private lateral pipe shall be free of any structural defects,
cracks, breaks, rodent holes, or missing portions, and the grade shall
be uniform without sags or offsets.
D.Â
No area drains, foundation drains, roof leaders, sump pumps or other
direct connections that allow stormwater or groundwater into the private
lateral will be allowed.
E.Â
The private lateral shall have a two-way cleanout located approximately
at the property line or, in the case where the private lateral is
all within private property, in a location approved by the Township
Engineer. All cleanouts shall be securely capped with an approved
cap at all times, except during maintenance activities, to prevent
the inflow of surface water.
F.Â
The private lateral shall be free of any material that obstructs
or prevents the effective maintenance or normal operation of the building
sewer lateral or the public sewer main.
G.Â
Property owners and food service operators are required to control
the discharge of fats, oils, and grease (FOG) into the sanitary sewer
system from their properties or food service establishments, and not
cause or contribute to FOG-related sanitary sewer overflows, blockages,
or increased maintenance in the sanitary sewer systems.
There are several acceptable methods for repairing or replacing
a private lateral. These include open cut, slip lining, cured-in-place
(CIPP), pipe bursting, etc. The Township engineer should be contacted
for the method most appropriate for the situation.
A.Â
Replaced portions of private lateral lines within the street right-of-way
shall be constructed in accordance with the Plumbing Code.
B.Â
Cleanouts shall be constructed, located, and floodproofed in accordance
with the Plumbing Code.
C.Â
Vents shall be constructed, located, and floodproofed in accordance
with the Plumbing Code.
D.Â
Replaced portions of private lateral lines not within the street
right-of-way shall be constructed in accordance with the Plumbing
Code.
E.Â
If possible it is recommended that private lateral connection be
installed at a slope of 1/4 inch per foot.
F.Â
Private lateral lines are to have four to six inches of bedding beneath
the pipe. Bedding material is to be No. 8 or No. 12 crushed limestone.
G.Â
Private lateral lines are to be backfilled with a minimum of six
inches of No. 8 or No. 12 crushed limestone over the top of the pipe.
H.Â
Private lateral connections under road surfaces or other paved surfaces
are to be backfilled with No. 8 or No. 12 crushed limestone to finish
grade of the roadway. Backfill under PennDOT-maintained roads shall
be in accordance with PennDOT specifications. The road surface is
to be repaired in accordance with the PennDOT or Township specifications.
I.Â
All connections, with the exception of slip-lined pipe, to the sanitary
sewer mains are to be made with a watertight PVC SDR 35 or cast iron
"wye" or "tee" saddle.
|
Neoprene rubber seals should be used for the transition from
the "wye" or "tee" fitting to the sewer main.
|
J.Â
Connections to slip-lined pipe can be made using a tapping saddle.
The tapping saddle shall be installed in a neatly tapped hole cut
into the slip-lined pipe.
K.Â
Manhole connections for private lateral lines are to be installed
as follows:
(1)Â
Manholes are to be core drilled.
(2)Â
A flexible pipe to manhole connector shall be used in the connection
of the sanitary sewer pipe to the manhole. The connector assembly
shall be the sole element relied on to assure a flexible, watertight
seal of the pipe to manhole.
(3)Â
Nonshrink grout is to be placed on the inside of the manhole, in
the area between the pipe and the outside diameter of the bore opening.
(4)Â
Internal drop connections are prohibited.
L.Â
If the private lateral line is to be installed using a trenchless
method to avoid open-cutting the existing pavement, prior approval
by the Township Engineer is required.
M.Â
This standard references ASTM test methods, which are made a part
hereof by reference and shall be the latest edition and revision thereof.
(1)Â
ASTM F1216 — Standard Practice for Rehabilitation of Existing
Pipelines and Conduits by the Inversion and Curing of a Resin-Impregnated
Tube.
(2)Â
ASTM F1743 — Standard Practice for Rehabilitation of Existing
Pipelines and Conduits by Pulled-in-Place Installation of Cured-in-Place
Thermosetting Resin Pipe (CIPP).
(3)Â
ASTM D5813 — Standard Specification for Cured-in-Place Thermosetting
Resin Sewer Piping Systems.
(4)Â
ASTM C1208/C1208M-11 — Standard Specification for Vitrified
Clay Pipe and Joints for Use in Microtunneling, Slip Lining, Pipe
Bursting, and Tunnels.
(5)Â
ASTM F714-12a — Standard Specification for Polyethylene (PE)
Plastic Pipe (DR-PR) Based on Outside Diameter.
A.Â
Prior to inspection, private laterals shall be cleaned by flushing
or pressure jetting. A combination of the following methods shall
be used to inspect private laterals to evaluate building sewers and
ensure compliance with the above standards:
(1)Â
Smoke testing. Smoke testing of private laterals is performed by
blowing smoke, mixed with large volumes of air, into the sanitary
sewer line and lateral, typically from an entry manhole. The smoke
is nontoxic, odorless, and nonstaining. Because the area of interest
is temporarily sealed off, the smoke follows the path of least resistance
and quickly appears at sites that allow surface water to enter the
sanitary sewer system. The only places where smoke should be seen
escaping are the sewer vents on the roofs of the houses (if there
is no house trap). Any other plumes of smoke indicate a source of
inflow; or
(2)Â
Dye testing. During this process, a fluorescent, nontoxic, nonstaining,
biodegradable dye is inserted into locations around a house or lateral
alignment that are suspected to be sites of lateral inflow. This includes
area drains, downspouts, and the earth near the foundation of the
house. After the fluorescent dye is inserted, a downstream manhole
is opened and observed. If dye is observed in the manhole, it has
penetrated the sewer collected system, which indicates breaks in or
illegal connections to the sewer lateral; and
(3)Â
Visual inspection. This technique consists of video inspection using
a lighted camera designed for inspection of sanitary sewers. The visual
(video) inspection shall be performed by i) a certified NASSCO Pipeline
Assessment Certification Program (PACP)/Lateral Assessment and Certification
Program (LACP) Operator; or ii) a Township-certified contractor using
established PACP/LACP coding and observations. Lateral inspection
methods shall conform to NASSCO standards, and defects shall be coded
in accordance with the Manual of Sewer Condition Classification (most
recent edition) as published by NASSCO, Inc.
[Amended 4-11-2019 by Ord. No. 809]
B.Â
The Township
Manager or his or her designee shall determine which of the foregoing
methods or combination of methods of testing or inspection shall be
used for each property, taking into account the particular conditions
present at each property which may render a particular method more
or less effective in light of such conditions.
[Amended 8-26-2001 by Ord. No. 831[1]]
[1]
Editor's Note: This ordinance also redesignated former Subsection
B as Subsection C.
C.Â
In addition to the inspections described above, all cleanouts and
vents will be inspected to verify that they are located in an area
of ponding or flooding during heavy rain events and that they are
scaled to prevent stormwater inflow.
A.Â
A private lateral will be considered deficient and require repair or replacement or disconnection of a clear water inflow source if the test methods in § 215-31 document any of the following conditions:
(1)Â
Visible smoke is detected during a smoke test from any location other
than a roof vent. If visible smoke is detected, a visual inspection
shall be performed to determine whether a source of clear water inflow
must be disconnected, the entire lateral connection must be line or
replaced, or whether there is a break or crack that can be repaired.
(2)Â
Dye is observed in a downstream manhole during a dye test. If dye
is observed in a downstream manhole, visual inspection shall be performed
to determine whether a source of clear water inflow must be disconnected,
the entire lateral connection must be lined or replaced, or whether
there is a break or crack that can be repaired.
(3)Â
Visual inspection results show 25% or greater of the lateral cross-sectional
area is blocked by debris. If any tree roots are growing into the
pipe, the tree roots must be removed, and the damaged section of the
lateral pipe must be replaced. If the blockage is grease and debris
that have not damaged the pipe, the repair can be accomplished by
cleaning the pipe.
(4)Â
Visual inspection results show breaks, cracks, or missing sections
that contribute observable clear flow or sediment into the sewage
collection system. If inflow is observed to weep, drip, run, or gush
into the lateral, the lateral will require lining, if appropriate,
or complete replacement of the failing section of pipe. Any defect
with a NASSCO rating greater than three must be replaced or repaired
to a condition that abates the source of inflow to the line.
(5)Â
Visual inspection results reveal a connection between roof leaders,
area drains, foundation drains, sump pumps, or other source of clear
water and the private lateral. All connections between sources of
clear water and the sanitary sewage collection system must be disconnected.
B.Â
If the private lateral is found to be in good condition, but the
vent or cleanout is found to be a source of inflow, the vent must
be elevated and floodproofed, without requirement to repair the lateral.
A.Â
Sewers will be cleaned by removing grit, loose solids, grease, and
any debris that are present.
B.Â
Cleaning shall be completed by the contractor no more than 24 hours
prior to inspection, but more than one hour prior to inspection, to
reduce the impact of the natural flow within the pipeline during inspection.
C.Â
The contractor shall trap all debris in the cleanout or at the end
manhole and properly dispose and haul away debris.
