I/I Studies
Hydraulic Modeling
Design & Construction
Operation & Maintenance
cMOM Compliance
Master Planning
Pipedream©
Missouri
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PROJECT:
Flood-Dye Water Testing
LOCATION:
Metropolitan St. Louis Sewer District,
St. Louis, MO
SCHEDULE:
Fall 2003-2004
PROJECT SCOPE:
Wade managed a flood-dye water testing program of multiple sanitary and
stormwater sewer cross connections as a subconsultant
for the Metropolitan St. Louis Sewer District. The dye
testing
program is part of a multi-year study to investigate, identify, quantify
and recommend improvements or rehabilitation techniques to reduce
inflow/infiltration within the District’s 4,500 miles of sanitary sewers.
PROJECT:
Mill Creek Sanitary Basin Flow Monitoring
LOCATION:
Gladstone, MO
SCHEDULE:
Fall 2003-present
PROJECT BACKGROUND:
The City of Gladstone has completed a Sanitary Sewer I/I Flow
Study and Rehabilitation Program for the Mill Creek Sanitary Sewer Basin.
Wade & Associates was selected to conduct a post-rehabilitation Flow Monitoring
Program of the Mill Creek Sanitary Basin.
PROJECT SCOPE:
Wade & Associates provided assistance to the City for
site assessment to establish optimum flow meter and rain gauge placement.
Wade and the city installed and calibrated 3 electronic depth/velocity flow monitors and 3
tipping-bucket rainfall recorders. Flows were monitored for a
60-day period which included weekly upload and interrogation
of flow data, meter calibration and velocity profiling. Rainfall was also
monitored at 3 additional sites within the basin during the same period. Flows
were analyzed for I/I quantification and I/I design storm event projections.
Current flow data will be compared to the pre-rehabilitation flow data to
measure the success of the rehabilitation program.
PROJECT:
Wastewater Master Plan
LOCATION:
Raymore, MO
SCHEDULE:
2003-present
PROJECT
BACKGROUND:
Wade (as a subconsultant) conducted a Flow Monitoring Program
as Phase I of an overall evaluation of their existing wastewater collection
system in order to prepare a 20 year master plan outlining improvements to their
system.
PROJECT
SCOPE:
Wade provided site assessment, installation,
calibration, data upload and interrogation, and velocity profiling of 11 flow
meter sites throughout the collection system. Five rain gauges were also
installed and monitored. Data was collected for a 60-day period with an
additional 30-day period extension. Additional field services including
manhole inspections and smoke testing may also be conducted.
PROJECT:
Water and Wastewater Master Plan
LOCATION: City of Grain Valley, Missouri
SCHEDULE: 2003
PROJECT BACKGROUND:
The City of Grain Valley's current population is approximately 7,200. The City has experienced considerable growth in recent years. This growth trend is expected to increase at an annual rate of 8.5% for the next several years.
PROJECT SCOPE:
Wade & Associates has put together an engineering team to develop a
Comprehensive Water and Wastewater Master Plan for the City of Grain Valley. The
purpose of the project is to
develop a hydraulic model of the City's water and wastewater
infrastructure and to analyze
existing and future growth requirements. The
wastewater hydraulic model will
also be used to analyze Inflow and Infiltration (I/I) projections. Rainfall
analysis, flow analysis, and cost-effectiveness analysis is
also included in the project.
The Master Plan will serve the City as a strategic planning guide for upgrading, improving, and expanding Grain Valley's water and sewer infrastructure to meet existing and proposed levels of service and reliability for a 20-year planning horizon. The Master Plan will outline priority areas of high I/I, projected water distribution, as well as wastewater collection system improvements that will be required to facilitate the area’s planned growth.
PROJECT:
Inflow and Infiltration Study
LOCATION: City of
Richmond, Missouri
SCHEDULE:
2003-present
PROJECT SCOPE:
Wade & Associates, Inc. assisted
the City in implementation of an
Inflow and Infiltration Study for the City of Richmond, MO. The goal of the program
was to
identify and quantify I/I within the study area. Scope
of the project included
flow monitoring of eight sites for a 60-day period as well as
rainfall monitoring at two additional sites. Field services included smoke testing
of approximately 60,000 lf of sewer. Wade also
coordinated field activities with City personnel
and implemented a public-relations
program to inform citizens of scheduled smoke testing activities.
Wade is presently conducting additional smoke testing and
manhole inspections for the project.
PROJECT:
Inflow and Infiltration Study and Sewer Rehabilitation Design
LOCATION: City of Savannah, Missouri
SCHEDULE: 2002-present
PROJECT BACKGROUND:
Wade was selected by the City of Savannah to conduct a Comprehensive I/I Study
and Rehabilitation Design Project on the City’s collection system. This is the
first I/I investigation of the City’s sewer system in more than 20 years. Phase
I included smoke testing of sanitary sewer pipelines. Phase II of the project
addresses additional I/I investigations identified in Phase I, supplemental
hydraulic modeling, and rehabilitation design and construction administration.
PROJECT SCOPE:
The Phase I scope included smoke testing of the City’s 155,000 feet of
sanitary sewers. The goal was to identify public and private defects
and quantify
and qualify defect flows. Results identified more than 500 sources of excessive
I/I representing 60% of the peak wet-weather flows arriving at the WWTP.
Phase II included over 600 Priority 1 & 2 manhole inspections, CCTV inspection of approximately 18,009 lf of sanitary sewer identified as Priority 1 from the Phase I smoke testing program and 13,000 lineal feet identified as Priority 2 from manhole and visual pipe inspections. Wade evaluated the CCTV results, conducted dye flood confirmation testing of 110 suspected I/I sources, performed cost-effectiveness analysis and submitted final rehabilitation recommendations to the City.
The design and construction administration portion of Phase II includes preparation of the manhole rehabilitation schedule, preparation of plans and specifications for sewer rehabilitation, post design and bid phase administration, and optional surveying and construction observation. Estimated rehabilitation costs are $1.5 million. Pipeline and manhole rehabilitation are being done under a state-wide CIPP contract which guarantees low construction unit prices and minimizes costs.
PROJECT: Comprehensive I/I Elimination Program
LOCATION: City of Jefferson, Missouri
SCHEDULE: 2001 - 2004
PROJECT BACKGROUND:
The City of Jefferson, MO currently maintains 1,230,000 lf of sanitary sewer in 21
basins. The City recently completed a Master Plan of their sanitary sewer collection
system. This plan cited excessive Inflow/Infiltration (I/I) and inadequacy of the
system to handle present peak wet-weather flows and future growth capacity as issues that
the City needs to address.
The City has retained Wade & Associates, Inc. to assist in implementation of a Comprehensive I/I Elimination Program including a Sanitary Sewer Evaluation Survey (SSES). The goal of the program is to reduce and control wet weather induced wastewater flows and SSOs (sanitary sewer overflows), restore structural integrity to the system, and improve system operations.
PROJECT SCOPE:
Wade & Associates will assist the City of Jefferson in conducting I/I
identification investigations and data collecting during Phase I of the program.
Investigations include manhole inspections, visual lamping, smoke testing, dyed-water
testing, building inspections, flow and rainfall monitoring, and cleaning and CCTV
inspections.
Wade & Associates will update the City's existing computerized hydraulic network and conduct flow data analysis, including I/I (SSES) quantification and analysis. Wade will then develop a calibrated hydraulic model of the system including storm design models depicting I/I removal. Finally, a cost-effectiveness analysis will be completed and recommendations for I/I elimination, sewer rehabiltation and relief sewer requirements will be submitted to the City.
PROJECT:
SSES and I/I Investigation
LOCATION:
Lebanon, Missouri
SCHEDULE:
2000-present
PROJECT
BACKGROUND:
The City of Lebanon operates and maintains approximately 630,000 feet
of sanitary sewer ranging in size from 8” to 27” diameter.
The system is separated into three major watersheds that are all tributary
to a single wastewater treatment facility. The EPA and the Missouri Department
of Natural Resources were concerned by the number of uncontrolled SSOs
(sanitary sewer overflows) that were occurring throughout the City's collection
system. In response, the City of Lebanon retained Wade & Associates
in 2000 to conduct a multi-phase comprehensive SSES (Sanitary Sewer Evaluation
Study) and I/I (Inflow and Infiltration) investigation to reduce I/I and
the frequency of SSOs in the Lebanon wastewater collection system.
PROJECT
SCOPE:
Wade & Associates assisted the City in the management of all phases
of the SSES field data collection. Field investigations included manhole
inspections, visual lamping, smoke testing, dyed-water testing, building
inspections, flow monitoring, and rainfall monitoring. Mr. Eric Mork of
Wade & Associates was the on-site field manager for the first phase
of the program providing oversight, and City staff training. Wade also
coordinated cleaning and CCTV inspections, assisted the City in data entry,
developing an inspection database, and provided the City with QA/QC. Wade
provided QA/QC for field inspections throughout the SSES program.
Wade assisted the City in developing a hydraulic model of the existing system. Wade’s Project Engineer, John Bergin, also provided technical assistance in the evaluation and analysis of flow data, Q vs. i analysis, hydraulic modeling, I/I calibration, cost-effectiveness analysis, and final reporting of recommendations for I/I removal and relief sewer requirements.
Based on the SSES findings, the City is now implementing a sewer renewal
program. Wade assisted the City in developing and implementing a Private
I/I Abatement Program. The City is making many manhole and pipeline repairs
with City staff and equipment. Wade is also providing sewer-rehab QA/AC,
regulatory CMOM assistance, post-rehabilitation flow monitoring, relief
design, and construction administration assistance. Design services include
plans and specs for approximately 14,000 lf of relief/replacement sewers
and pump station replacement recommended in the SSES program. Construction
administration includes bid assistance, construction observation, and
project certification.
Wade’s services include periodic progress reports to the Missouri
Department of Natural Resources and EPA, as well as participation in progress
meetings with MDNR and EPA.
PROJECT: Sanitary Sewer
Evaluation Study
LOCATION: Springfield, Missouri
SCHEDULE: October 1992 - Present
PROJECT BACKGROUND:
Faced with an increasing number of wastewater backups and overflows, the City of
Springfield embarked on a multi-year program to eliminate excessive inflow and
infiltration from their 800-mile, City-owned collection system. Project goals were: (1) to
identify I/I sources and reduce excessive flows, (2) to establish a computerized database
to be used for implementation of a preventative maintenance program and (3) to develop a
database to be used with the City's GIS that is currently under development. To better
control the allocation of funds needed to accomplish a task of this magnitude, the City
decided to implement a pilot study as the project's first phase.
PROJECT SCOPE:
The City of Springfield retained Wade & Associates to conduct a comprehensive
sanitary sewer evaluation survey using Pipedream, a comprehensive computer-management
system Wade & Associates developed for sanitary sewer systems. The three specific
study areas were defined based on the specific construction and age of the various
collection systems. The firm conducted flow monitoring, manhole, visual pipe, building,
smoke, dyed-water tests and television inspections in each study area. Cost effective
analyses (CEA) were performed to identify I/I sources targeted for abatement from the
collection system. Projections based on CEA results were used to estimate future
expenditures needed to abate excessive I/I from similar areas of the City's collection
system. By the end of this project, the City staff was trained in proper techniques for
I/I source identification and in the use of Pipedream©, allowing the option of using City
resources to accomplish goals.
PROJECT: Little Shoal Creek Sanitary Sewer Evaluation Study
LOCATION: Liberty, Missouri
SCHEDULE: 2000
PROJECT SCOPE:
Wade & Associates (as a subconsultant) is assisting the City in conducting a
comprehensive SSES of approximately 90,000 lf of sanitary sewer located in the Little
Shoal Creek drainage area. Field investigations include: A 60-day flow
monitoring (13 sites) and rainfall monitoring (5 sites) program; 400 internal manhole and
visual pipe inspections; and smoke testing of 73,000 lf of sanitary sewers in the study
basins. Wade provided data entry of field information using Wade's proprietary
software Pipedream©. Flow data was analyzed and I/I projections (Q vs i) were
developed.
PROJECT: Sanitary Sewer Evaluation Area-Wide Study
LOCATION: Blue Springs, Missouri
SCHEDULE: April 1991 - Present
PROJECT BACKGROUND:
The City of Blue Springs operates and maintains approximately 940,000 feet of sanitary
sewer in four primary watersheds. Three of these discharge to the Little Blue Valley Sewer
District, a regional wastewater management facility and one
drains to the City's Sni-A-Bar wastewater treatment facility. In 1991, the City retained Wade &
Associates to help with the development and implementation of a system-wide comprehensive
evaluation of the sanitary sewer system. Program goals were to (1) identify and eliminate
excessive I/I, (2) develop a predictive hydraulic model to control peak rainfall-induced
wastewater flow, and (3) determine the impact of future growth and development on the
current system.
PROJECT SCOPE:
The system has been divided into 34 basins. Each year, the City has conducted flow
surveys in eight (8) of these basins.
Concurrent with the flow monitoring program, a computer-assisted hydraulic model has been
developed for each basin included in the flow survey. The City targeted basins exhibiting
high I/I rates for a follow-up sewer system evaluation survey that included manhole
inspections, smoke testing, door-to-door building inspections and television inspections.
Wade & Associates provided training, supervision and quality control throughout. All
data from the flow survey, field inspections, and modeling activities was managed by
Pipedream©, the firm's sanitary sewer system modeling software. Pipedream© has been
installed on the City's computers to facilitate ongoing operation, management and
maintenance of the sanitary sewer system.
Wade is currently implementing the Phase I Sanitary Sewer I/I Reduction Study. Evaluation studies will be conducted on approximately 174,350 lineal feet of sewer in Basins B03, B04, C04, D06, and D07. Field investigations include smoke testing, manhole inspections, visual pipe inspections, CCTV inspection and cleaning. Hydraulic modeling will be conducted and recommendations for I/I removal and capacity improvements will be established including recommendations for CMOM implementation.
PROJECT:
Rocky Creek Branch Inflow/Infiltration Study
LOCATION: Kansas City, Missouri: Rocky Creek Branch Basin
SCHEDULE: June 1994 - 1999
PROJECT BACKGROUND:
The City's sewer system was experiencing chronic inflow/infiltration during significant
rain events. Based on meetings with City staff, the project team of Bucher, Willis
& Ratliff and Wade & Associates suggested an innovative approach to reducing the
impact of excessive inflow and infiltration in the Rocky Branch Watershed that involved a
combined flow monitoring program and extensive manhole inspection. The rehabilitation
solution will reduce the need somewhat for excess relief sewer capacity, the cost of
pumping and treatment and hydraulic overload problems at the plant.
PROJECT SCOPE:
The project team conducted a comprehensive flow monitoring survey at five (5) locations
in the wastewater collection system and at the basin lift station. They selected key
monitoring sites, installed the meters and checked them weekly for service and
calibration. Based on analysis of the data collected from meter sites, the team then
created a report of findings and recommendations. Throughout this first phase of the
project, the team held periodic meetings with the City. The second phase of the project
involved a comprehensive inspection of all manholes within the study area. Data from these
inspections and the flow monitoring program will be used to develop a prioritized manhole
rehabilitation program.
PROJECT:
Kansas City, MO Multi-Basin SSES
LOCATION:
Kansas City, Missouri
SCHEDULE:
1994 - 1999
PROJECT SCOPE:
Wade was retained by the City of Kansas City, Missouri and
other consultants to conduct a number of basin-wide SSES projects. The basins
included Spring Valley,
Rocky Branch, Fairwood, Robandee, and Burlington Creek.
Total inventory included in the combined basins was approximately 500,000 linear
feet. Each SSES was accompanied by a I/I report prepared by Wade, outlining the
detailed sewer renewal and capacity improvement plans, along with cost estimates
and proposed I/I reduction goals.
PROJECT: Flow Monitoring
and Analysis
LOCATION: Clinton, Missouri
SCHEDULE: 1994
PROJECT BACKGROUND:
The City of Clinton constructed a new wastewater treatment facility approximately 12
years ago. The previous lagoon facility had become inundated by the construction of the
Truman Reservoir. Excessive I/I flows at that time resulted in the inclusion of an excess
flow detention facility. I/I flows have continued to increase, causing repeated back-ups,
overflows and treatment problems. The City retained Wade & Associates in association
with Bucher, Willis & Ratliff to help with the development and implementation of a
system-wide flow monitoring program. The program goals were to quantify inflow and
infiltration in the collection system and determine how much I/I was entering through
interceptor sewers constructed by the Corps of Engineers. This program represents the
first step in a multi-year program to reduce system I/I and rehabilitate the collection
system.
PROJECT SCOPE:
BWR and Wade installed, calibrated and serviced flow meters and rain gauges in the
City's sanitary sewer system. Two pump stations were calibrated. The team analyzed flow
monitoring and rainfall data. The study was conducted to measure and quantify the amounts
of normal base (dry-weather) flow, infiltration, and inflow (I/I) that enter into each of
the City's eight (8) drainage basins during the months of late April through early July.
Results of the flow monitoring program will be helpful in developing a more detailed
hydraulic model where I/I is excessive and future demand for additional capacity is
likely. Flow information and the hydraulic model will be used to evaluate and design
collection system capacity by adding strategic relief and replacement interceptor sewers
and flow equalization basins. Excessive I/I flows identified will drive comprehensive
field inspection and testing activities in high priority basins. Coordination with the
Corps of Engineers resulted in financial assistance for the City.
PROJECT:
Sanitary Sewer Evaluation: South Interceptor
LOCATION: Harrisonville, Missouri
SCHEDULE: 1994
PROJECT BACKGROUND:
The City's sewer system was experiencing hydraulic overflow during significant rain
events. Manhole covers were lifted in the storm. The treatment plant lift station bypassed
excess wet-weather flow to an old basin and a stream. Effluent quantity was hampered by
excess flow. Also, property owners were experiencing back-ups.
PROJECT SCOPE:
To solve these problems, the City hired the project team to conduct a comprehensive
sanitary sewer evaluation survey of approximately 130,000 linear feet of pipeline in the
study area. First, they reviewed existing available information on the system, including
sewer atlas, wye and section maps; zoning and land-use records; census information;
available maintenance work order reports; and City personnel interviews. The team then
conducted manhole inspections and smoke testing resulting in the identification of
approximately 4 mgd of inflow. Over 80% of this I/I was cost-effective to remove. To
prepare the final report, engineers prioritized I/I targeted for removal and ranked
sources by type and projected elimination costs. The report also included a follow-up
rehabilitation construction plan. Throughout the project, the team participated in
meetings with the City to review findings and discuss modifications or additions they felt
necessary.
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