West
Jersey Creek Project Overview |
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Wade and Associates, Inc. (in partnership with Delich, Roth & Goodwillie) is assisting the Unified Government of Kansas City, KS in implementing an Sanitary Sewer Evaluation Study in the West Jersey Creek Basin. |
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A Sanitary Sewer Evaluation Survey (SSES) may consist of all or some of the parts described below. Wade's current involvement in the West Jersey Creek Project includes approximately 580 Manhole Inspections with GPS surveying and Visual Pipe Inspections. Wade will also conduct Smoke Testing of approximately 116,700 lf of pipeline, and approximately 100 Building Surveys and Dyed-Water Inspection verifications of suspect I/I sources. Additional Pipeline Cleaning and CCTV Inspections will also be conducted. |
| Wade will also implement a Flow Monitoring Program of approximately 22 metering sites throughout the West Jersey Creek Study Area. Wade will use this information to analyze flows of the West Jersey Creek Watershed wastewater collection system. The investigation targets areas for further study to identify and reduce Inflow & Infiltration (I/I) sources and to address capacity issues in order to update and improve the City's collection system. |
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| Door hanger notification for smoke testing of sanitary sewer lines in the West Jersey Creek Study Area will be distributed at least 2-7 days before testing in the area begins. Materials used are: | |
| NON-TOXIC,
HARMLESS, ODORLESS, AND CREATES NO FIRE HAZARD. |
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| Our
goal is to find and reduce defects in your wastewater collection system to
eliminate future sanitary sewer overflows and backups and to control
wet-weather flows. Inflow & Infiltration
reduction reduces costs of excessive relief sewer construction, protects
the health and well being of the public and the environment. We
would like to thank the citizens of the Kansas City, KSfor their efforts
in making this project a success! |
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Check
our Daily Schedule link for
a site map, testing boundaries and current field investigations.
Visit our SSES links to learn more about Wade's
other field investigations. |
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| ... find additional information for other Wade Projects at www.wadeinc.com |
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Inflow/Infiltration' (I/I) are common terms used for the introduction of excess water into a Sanitary Sewer System or Sanitary Collection System. This is typically in the form of rain and runoff from storms. The Sanitary Sewer System is not designed to handle such volumes of water as a storm can produce, so it becomes vitally important to identify where this water is entering the system. If too much water is entering the Sanitary Sewer System, it can lead to SSOs, sewage backups, and escaping of waste substances and chemicals. In general, a Sanitary Sewer Evaluation Study (SSES) may consist of all or some of the following parts: |
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| Flow Monitoring | |
| Smoke Testing | |
| Manhole Inspections | |
| Visual Pipe Inspections | |
| Building Surveys | |
| CCTV Inspections | |
| Dyed-Water Inspections | |
 Flow
Monitoring: In order to determine the volume of water flowing
through a sewer pipe, the flow must be monitored and measured. Once this
is done, data analysis is completed to determine relationships
between flows and rainfall data. The resulting data may
also be used to build a computer model of hydraulic
flows throughout the entire sewer system.
This hydraulic model is highly useful in determining
areas of stress, addressing capacity issues,
and diagnosing problems in the sewer system.
A hydraulic model is also useful as a tool for future planning and development. |
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| Smoke
Tests: Smoke testing (often
referred to as a rainfall simulation test) is used to detect I/I sources
in both the private and public sectors. Smoke testing is performed by
placing a smoke generator into the intake chamber of a high-capacity
blower placed over an isolated sewer pipe. Field crews monitoring
the area document locations where smoke escapes the system at some defect
or I/I source. Although not a defect, one common escape route for smoke
is the vent pipe: this is the pipe emerging from the roof of
a private dwelling that allows the escape of sewer gasses before they
enter the residence. The smoke that can be seen
coming from vent pipes or rising from areas in the ground is:
NON-TOXIC,
HARMLESS, ODORLESS, AND CREATES NO FIRE HAZARD. |
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| Manhole
Inspections: Fifty percent or more of water entering into the
sewer system, and overloading the sewer pipes, enters through manhole
structures. During these inspections, our trained field inspectors survey
all manhole structures and components for defects, as well as incoming
and outgoing sewer lines. |
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| Visual
Pipe Inspections: Commonly called 'lamping,' this is the process
of entering a manhole and using a light and mirror to visually examine
all sewer pipes entering and exiting the manhole to identify early signs
of pipe deterioration, root intrusion, deposition and other defects. |
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| Building
Surveys: Smoke testing alone cannot confirm every possible I/I
defect on a property. For this reason building surveys are conducted to
detect and/or confirm potential I/I sources. During a building
survey, crews examine private property for evidence of defects in
the sewer line connections, called 'service laterals.' Such defects can
lead to unwanted and potentially dangerous influx of gasses into residences.
Such surveys are conducted with minimal disturbance to building residents
and owners; special provisions are made to assure homeowners and occupants
of the legitimacy of the survey and to communicate the importance of the
information needed. |
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| CCTV
Inspections: This process involves transporting a closed-circuit
TV camera through a sewer pipe. Engineers and technicians view the resulting
footage and glean valuable data on conditions of the sewer pipe. |
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| Dyed-Water
Testing: Sometimes a simple visual inspection of a suspect I/I
source cannot confirm if the source is connected to the sewer system.
In this case, crews will introduce dyed-water into the suspect source.
If dyed water shows up in the sewer system, the leak will be confirmed.
This makes identifying leaks and breaks in the pipe much easier to identify. Top |
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