I/I Studies
Hydraulic Modeling
Design & Construction
Operation & Maintenance
cMOM Compliance
Master Planning
Pipedream©
Oklahoma
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PROJECT:
Flow Monitoring Program
LOCATION:
Broken Arrow,
Oklahoma
SCHEDULE:
2003
PROJECT SCOPE:
Wade & Associates (as a subconsultant), conducted a flow
monitoring and lift station assessment for the City of Broken Arrow. Scope included
flow monitoring, flow data analysis, and reporting.
PROJECT:
Flow Monitoring Program
LOCATION:
Claremore,
Oklahoma
SCHEDULE:
2003
PROJECT SCOPE:
Wade & Associates implemented a flow monitoring program as an
element of Claremore's Wastewater Master Plan. Wade's portion of the
project included flow monitoring, rainfall monitoring, flow data
analysis, Q vs i analysis and reporting.
PROJECT:
Smoke Test Evaluation
LOCATION:
Calera,
Oklahoma
SCHEDULE:
2002
PROJECT SCOPE:
The Town of Calera retained Wade & Associates, Inc., to conduct a smoke test
evaluation on the town’s 59,502 lf of sanitary sewer to characterize and
quantify, public and private defects. Wade provided recommendations for a system
rehabilitation program to reduce Inflow/Infiltration defects identified during
the study.
PROJECT: Hydraulic Modeling
LOCATION: Moore,
Oklahoma
SCHEDULE: 2000-2001
PROJECT BACKGROUND:
The City of Moore, Oklahoma, has retained FHC to prepare a Wastewater Master Plan. Wade
& Associates, Inc. provided hydraulic modeling support for this project. The
City’s collection system is divided into an east and a west basin by a railroad track
running north/south through the middle of the City. The entire population is approximately
45,000 people. The east basin contains approximately 57,000 lf of 10" and larger pipe
with no parallel interceptors or split flows. The east basin was monitored using
four (4) flow monitors in Spring of 2000. The west basin contains approximately
94,337 lf of 10" and larger pipe and was monitored using eight (8) flow monitors in
the fall of 2000. The west basin contains no parallel interceptors and the model contains
four (4) split flow manholes.
PROJECT SCOPE:
Wade provided Pipedream© for the creation of the hydraulic network. Wade
calibrated the hydraulic model for dry and wet weather flow at existing conditions
and preformed Q vs. i analysis. The model was used to evaluate existing conditions and
project future flows and conditions.
PROJECT: Southside Collection System Improvement
Fred Creek Drainage Area
LOCATION:
Tulsa, Oklahoma
SCHEDULE: May 1999 - April 2000
PROJECT BACKGROUND:
The City of Tulsa operates and maintains an extensive system of wastewater collection
facilities. Currently the City’s collection system contains approximately 750 miles
of sewer system. This project was part of the City’s ongoing wastewater management
program to eliminate sanitary sewer overflows. The Fred Creek Drainage Area contained
roughly 351,000 lineal feet of sewer and is comprised of medium and high-income
residential housing, university campus, light industrial, and commercial areas.
Approximately 329,000 lineal feet of sewers were targeted for comprehensive study and
analysis.
The City had experienced excessive emergency maintenance and reoccurring storm related backups. Wade believed that excessive I/I contributions from the Fred Creek Drainage Area were resulting in the excessive flow conditions in the collection system. The City of Tulsa retained Wade & Associates to conduct a comprehensive sanitary sewer evaluation survey and I/I investigation in the Fred Creek Basin.
PROJECT SCOPE:
A comprehensive I/I investigation of the sanitary sewer collection system in the Fred
Creek Drainage Area was conducted to develop a cost-effective plan for sewer
rehabilitation and to develop projections of rehabilitation costs required to alleviate
I/I related overflows within the sewer system. A final report was then presented and
recommendations for reducing excessive I/I through proper management approaches such as
sewer rehabilitation and selective relief sewers.
Services included: Flow Monitoring: (15 flow meter sites/60 day monitoring period), rainfall monitoring (6 gauge sites/60 day), Q vs. i analysis and hydraulic networking. I/I Investigations: manhole inspections (2000), visual pipe inspections, smoke testing (298,000 lf of pipe), building inspections, CCTV/cleaning, and private & public sector dyed-water testing. Analysis and Reporting: Develop a hydraulic model of the system, I/I reduction and management alternatives, costs-effectiveness analysis, private I/I abatement plan, and final report of findings and recommendations.
PROJECT: Hydraulic Modeling Projects
LOCATION: Norman,
Oklahoma
SCHEDULE: 1999
PROJECT BACKGROUND:
In 1996 Wade & Associates was part of a team that created a comprehensive master
plan and computerized hydraulic model of the City's sanitary sewer system to manage
extraneous I/I and determine the hydraulic impact of future development. Wade later (1997)
reviewed and modified the hydraulic network that was in place in Norman. In this project,
analysis was done and used to calibrate a new model for the City's future growth. The
final part of this project included software training for the Pipedream© program. In 1998
the City performed additional sanitary sewer evaluation studies on approximately 300,000
lf of collection system and wished to update the hydraulic model.
PROJECT SCOPE:
Wade reviewed the resulting SSES Pipedream© database and calibrated the hydraulic
model. Wade & Associates prepared and provided training manuals specific to the use of
Pipedream© and installed Pipedream© Version 5.2 software on all databases and installed
programs into the City’s hardware system. Training was provided for the hydraulic
modeling software.
PROJECT: Central Business District (CBD) SSES
LOCATION: Tulsa,
OK, Oklahoma
SCHEDULE: 1998-1999
PROJECT BACKGROUND:
Wade and Associates, Inc. was part of a team that performed a Sanitary Sewer Evaluation
Survey (SSES) for the Central Business District (CBD) in Tulsa, Oklahoma. The purpose of
the SSES was to identify and quantify inflow and infiltration (I/I) in the system,
evaluate the existing condition and capacity of the system, and to recommend
rehabilitation based on a cost effectiveness analysis. The CBD portion of the City’s
collection system consists of approximately 325,929 lf of sanitary sewer with some parts
dating back to around 1900.
PROJECT SCOPE:
Wade provided data input and performed hydraulic modeling for the Central Business
District (CBD) SSES. The model was used to evaluate system capacity, existing peak
wet-weather induced flows and identify overloaded line segments in the system. The initial
model was calibrated to a 5-year, 60-minute rainfall event. Additional models were
developed for 10% incremental I/I reduction simulations. A cost effectiveness analysis
(CEA) was performed to identify least-cost means for removing I/I and recommended system
rehabilitation.
Wade and Associates also conducted approximately 400 building inspections in the CBD area and identified potential I/I connections. Wade prepared a list of 100 suspect I/I connections for further dyed-water testing.
PROJECT:
Post-Rehabilitation Flow Analysis
LOCATION:
Inola,
Oklahoma
SCHEDULE:
1998
PROJECT SCOPE:
Wade prepared a post-rehabilitation Flow Analysis Report to serve as a basis for
sizing collection system improvements. Wade reviewed all data and calibrated the
hydraulic model.
PROJECT: Flow Monitoring Program
LOCATION: Sapulpa,
Oklahoma
SCHEDULE: 1997
PROJECT BACKGROUND:
The City of Sapulpa, Oklahoma contracted CH2M HILL to provide flow monitoring and data
analysis to compare pre- and post-rehabilitation wastewater flows. The post-flow
monitoring data was used to confirm the sizing of wastewater pump stations, force mains,
and offline storage basins.
PROJECT SCOPE:
Wade & Associates under contract with CH2M HILL provided post-rehabilitation flow
monitoring and gathered data to compare to pre-rehabilitation flows and confirmed the
sizing of wastewater pump stations, force mains, and off-line storage basins. The scope
included installation of flow monitors and rain gauges, calibration of data and data
transfer services.
PROJECT: Hydraulic Modeling
LOCATION: Owasso,
Oklahoma
SCHEDULE: 1996
PROJECT BACKGROUND:
The City of Owasso, Oklahoma retained FHC to develop a Wastewater Master Plan.
Owasso’s existing collection system was modeled and calibrated on the basis of WWTP
flows. The City operates ten lift stations that were included in the model. The final
model was used to determine the improvements to the existing facilities to begin
infrastructure development and a master plan to future needs.
PROJECT SCOPE:
Wade & Associates provided FHC with Pipedream© software for the project that was
also delivered to the City of Owasso. The hydraulic model provided four scenarios: 5-year
plan, 10-year plan, 20-year plan, and ultimate plan. The model was divested of its SSES,
Defect Modeling, and O&M work order capabilities. Wade & Associates utilized
hydraulic network and land use information from the existing system and designed flows
that were developed by FHC, Wade & Associates then calibrated the model at one point
in the system (at the WWTP.) Calibration was on a gpm/lf and land use basis as directed by
FHC. By utilizing an unsized hydraulic network and land use information that was developed
by FHC, Wade & Associates then ran a “Replacement Line/Relief Line” model
and the results were forwarded to FHC. Wade & Associates assisted FHC with updating
the model by substituting the original unsized pipe diameters with the “Replacement
Line” pipe sizes.
PROJECT:
Collection System Improvement
LOCATION: Sand
Springs, Oklahoma
SCHEDULE:
2001
PROJECT BACKGROUND:
The City of Sand Springs has implemented an ongoing
wastewater management program to eliminate SSOs and manage their collection
system. This was partly in response to an earlier EPA consent order.
Previous evaluations identified
the Angus Valley Drainage Area as contributing excessive I/I into the collection
system, resulting in frequent sewer backups and overflows. Wade &
Associates had
completed a hydraulic model of the Sand Springs collection system as part of the initial
evaluation.
PROJECT SCOPE:
In 2001, the City retained Wade & Associates to complete
a comprehensive
I/I investigation in the Angus Valley Drainage Area and develop a cost-effective
program for sewer rehabilitation and management approaches. This study area
included basins KK and LL within the Drainage Area. Field investigations
included 153 manhole inspections, 307 visual pipe inspections, and smoke testing
of 31,018 lf of sanitary sewer. Defects were quantified and a hydraulic
model was developed of the study area. Recommendations for cost-effective
I/I reduction and sewer rehabilitation including a continued maintenance program
were submitted to the City.
PROJECT: Sanitary Sewer Evaluation Study Assistance
LOCATION: Glenpool,
Oklahoma
SCHEDULE: 1996
PROJECT BACKGROUND:
The City of Glenpool, Oklahoma retained FHC to conduct a SSES of approximately
one half of its wastewater collection system, and to evaluate and upgrade all of
its lift stations. Changes in the development patterns in the City suggested
that future growth should be analyzed to ensure proper sizing of the lift
stations and to analyze the impact of the lift station improvements upon the
gravity systems downstream of the lift stations.
PROJECT SCOPE:
Wade teamed with FHC to provide hydraulic modeling assistance
and Pipedream© software & support. FHC created a
sewer defect database of the Glenpool system and
Wade reviewed and determined I/I rates for the study area.
Wade calibrated the hydraulic model and provided the results
to FHC to prepare the hydraulic capacity scenarios for the City.
PROJECT: Flow Monitoring/Analysis
LOCATION: Ponca
City, Oklahoma
SCHEDULE: 1994
PROJECT BACKGROUND:
The City of Ponca City, Oklahoma operates and maintains approximately 160 miles of
sanitary sewers which transport wastewater to the City’s Wastewater Treatment
Facility. A report was submitted to the City in 1992 which summarized the flow monitoring
programs for the Westside Wastewater Collection System. The previous study also included
an evaluation of the City’s pumping stations, I/I investigations, computerized maps,
and recommendations for rehabilitation. This current report has been prepared by Wade
& Associates to present a summary of our findings, conclusions, and recommendations
for the Eastside Wastewater Collection System.
PROJECT SCOPE:
Chronic overflows and bypasses had been observed and reported to the State of Oklahoma
by the City in recent years during periods of intense or extended rainfall. Resulting I/I
had also impacted the operation of the WWTF. A similar flow monitoring study was conducted
in 1992, which included the western portion of the collection system. It was concluded
that a completion of the monitoring program was necessary for the remainder of the system
which comprises almost 70% of the entire collection system. The current study was
conducted to measure and quantify the amounts of normal base flow, infiltration and inflow
(I/I) that enter into the City WWTF from the Eastside. This system represented
approximately 586,000 feet of sanitary sewers comprised of seventeen (17) basins. A total
of ten (10) basins were included in the 1992 Westside I/I study. Results were used to
develop a more detailed sewer system investigations and rehabilitation where I/I were
excessive.
PROJECT: I/I Reduction Program
LOCATION: Bartlesville,
Oklahoma
SCHEDULE: January 1992 - July 1993
PROJECT BACKGROUND:
In response to an EPA-mandated schedule for reducing infiltration and inflow from the
wastewater collection system, the City of Bartlesville, Oklahoma conducted a general
wastewater flow survey and engineering study in addition to hydraulic modeling. The
resulting plan indicated a need for additional flow surveying and engineering of
improvements that would include collection system rehabilitation, pump station upgrades,
flow equalization and treatment plant expansion.
PROJECT SCOPE:
Wade & Associates, provided program management for the resulting comprehensive
study, design, and construction inspection services that led to a 3-year, multi-million
dollar capital improvement program for reducing and managing excessive I/I in the City's
wastewater collection and treatment facilities. During Phase 1 of the project, the team
created a hydraulic model and created an SSES implementation manual for distribution to
city officials. Phase 2 involved a flow isolation program, extensive manhole and visual
pipe inspections, and follow-up smoke testing and television inspection throughout the
collection system. During Phase 3, the team performed I/I elimination analysis,
relief/replacement sewer analysis, treatment analysis, and cost-effectiveness analysis.
Finally, the team provided a report of findings and provided technical transfer and
training on Pipedream©, Wade & Associates' proprietary hydraulic modeling software.
PROJECT: Sanitary Sewer Evaluation, Area-Wide Study:
Chisholm Creek
Watershed
LOCATION: Oklahoma
City, Oklahoma
SCHEDULE: January 1992 - May 1993
PROJECT BACKGROUND:
The Chisholm Creek watershed is one of several wastewater collection systems owned and
maintained by the City of Oklahoma City. It is tributary to an advanced wastewater
treatment facility. Tributary to this system are separate discharges from the Cities of
Edmond and The Village, Oklahoma. The entire system is approximately 1.10 million feet
long with pipes ranging from 6 inches to 33 inches in diameter. The system is further
divided into 34 basins. In recent years, the City has experienced uncontrolled wet-weather
bypasses and overflows. Structural deterioration has also introduced I/I into the system.
I/I has limited the hydraulic capacity to accommodate future growth. The City commissioned
this study in 1991 to develop a pro-active rehabilitation plan to reduce I/I and control
scheduled maintenance.
PROJECT SCOPE:
Wade & Associates was retained by FHC, Inc. of Tulsa, Oklahoma, to conduct a
comprehensive sewer system evaluation survey using Pipedream, a comprehensive
computer-management system developed by Wade & Associates for sanitary sewer systems.
The firm compiled flow monitoring information and I/I defect data from manhole
inspections, smoke testing, building inspections, and television inspections, and
assembled a calibrated hydraulic model which simulated wet-weather-induced flow throughout
the watershed. The firm selected a final analysis that culminated in a $1.54 million sewer
rehabilitation plan to reduce 30-50% of excessive I/I in the system. An additional $13.4
million relief sewer program will be implemented over a multi-year program. The City will
also use Pipedream© as in-house program manager to establish and maintain an annual
Capital Improvements Program in the Chisholm Creek Watershed.
PROJECT: Comprehensive Sanitary Sewer Evaluation Study
and
Rehabilitation Design
LOCATION: Flatrock
Creek Basin
Tulsa, Oklahoma
SCHEDULE: October 1992 - Present
PROJECT BACKGROUND:
After developing the hydraulic model of Tulsa’s 9 million-foot sanitary sewer
system in 1991, Wade & Associates is providing extensive rehabilitation services
including an SSES of 1,000,000 linear feet of sewer and design of recommended
rehabilitation. In response to an EPA mandate to eliminate uncontrolled bypasses and
chronic overflows and improve system capacity by reducing I/I related defects, the City
has undertaken the improvement project in two phases.
PROJECT SCOPE:
SSES of Phase I included 18 sub-basins (430,000 lf) that were evaluated between April
1993 and October 1994. Phase II consisted of the remaining 22 sub-basins (600,000 lf) and
began in July 1995. The final report was submitted in February 1997. In the course of the
more recent phase, Wade & Associates conducted 2,737 manhole and visual pipe
inspections, 7,644 building inspections, and smoke testing of 580,798 feet of sewer. Some
13,000 I/I sources were identified and 10,000 pipe defects were located in the study area.
This defect data as well as flow and rainfall data were imported into the Pipedream©
hydraulic model, thereby reflecting existing field conditions during defect analysis.
Design of rehabilitation for 900 manholes ranging from replacement to joint sealing has been completed for Phase I. Design of pipeline rehabilitation for 50 to 75 lines requiring replacement, lining, or up-sizing is underway. Design for Phase II will begin upon approval of the SSES report. As part of the extended rehabilitation program, Wade & Associates will also provide post-construction inspection and post-rehabilitation flow monitoring and analysis.
PROJECT: Sanitary Sewer Improvements
LOCATION:
Joe Creek Area Collection System
Tulsa, Oklahoma
SCHEDULE: December 1993 - February 1995
PROJECT BACKGROUND:
The City of Tulsa was under an EPA Consent Order to address three chronic overflows in
the Joe Audubon Creek Area in the City of Tulsa sanitary sewer system. The existing Joe
Creek Main surcharged under light to moderate rainfall events. Also, significant I/I flows
were evident during such rainfall events. A sanitary sewer evaluation survey previously
conducted by the City identified a substantial number of collection line and manhole
defects. Even with repair of many of these defects, the existing system capacity was found
to be carrying only about 28% of the necessary flows.
PROJECT SCOPE:
The prime consultant and program manager, FHC, Inc. retained Wade & Associates to
assist with sanitary sewer improvements in the Joe Audubon Creek Area. Initially, Wade
& Associates performed information research to develop a hydraulic network of the Joe
Audubon Creek Area. Additional tasks included I/I source calibration, hydraulic modeling
and analysis, evaluation of rehabilitation alternatives and preparation of the final
report.
PROJECT: Sanitary Sewer Hydraulic Model
LOCATION: Tulsa,
Oklahoma
SCHEDULE: November 1991 - November 1992
PROJECT BACKGROUND:
The City of Tulsa operates and maintains approximately 9.0 million feet of separated
sanitary sewers. The system is divided into three (3) principle watersheds which are
tributary to three major treatment facilities. In recent years, the City had implemented
several I/I studies to control and manage chronic wet-weather overflows and bypasses. The
studies, for the most part, had not succeeded in attaining the City's primary goals of
substantial I/I reduction and control. Subsequent enforcement action on the part of the
State of Oklahoma prompted the City to implement a comprehensive, system-wide I/I
abatement program. The first phase of the program was developing a computer hydraulic
model.
PROJECT SCOPE:
The prime consultant and program manager retained Wade &
Associates to develop a
computer-simulated hydraulic model of the entire collection system. Continuous recording
depth/velocity meters captured flow monitoring information during a 10-week wet-weather
period at 108 control points. Concurrently, the City collected rainfall monitoring data to
correlate peak system hydraulic response to rainfall intensity and duration. The hydraulic
network was entered into the model from as-built information recorded on sewer atlas maps
provided by the City. The final model was calibrated to the flow monitoring data for 1-,
5-, and 10-year storm events. The City uses the resultant model to size major interceptor
relief sewers and wet-weather holding facilities and to perform rehabilitation work.
PROJECT: Sanitary Sewer Hydraulic Model
LOCATION: West
Tulsa Study Area
Tulsa, Oklahoma
SCHEDULE: August 1992 - Present
PROJECT BACKGROUND AND SCOPE:
The prime consultant and program manager, FHC, Inc. retained Wade & Associates to
develop a computer-simulated sanitary sewer hydraulic model of the West Tulsa Sewer
System. Wade &Associates provided inflow/infiltration defect analyses for 32,000
linear feet of sanitary sewer in this study area. The scope of work included evaluation of
flow monitoring data and development of Q vs. i relationships. Finally, the Wade &
Associates staff developed and calibrated the hydraulic model of the study area and
determined the need for relief/replacement sewers and their target locations. Based on
recent rehabilitation, Wade & Associates engineers are updating the hydraulic model.
PROJECT:
Manhole Rehabilitation Project
LOCATION:
Miami,
Oklahoma
SCHEDULE:
1991 - 1993
PROJECT SCOPE:
Wade & Associates prepared plans and specifications for $1.0 million manhole
rehabilitation and restoration program. The project was conducted in response to
an EPA Administrative Order to reduce excessive I/I. Wade also provided project
certification.
PROJECT:
Sanitary Sewer Evaluation and Hydraulic Model
LOCATION:
Vinita,
Oklahoma
SCHEDULE: February 1991
PROJECT SCOPE:
Wade created a computerized model and performed a sewer evaluation survey of
31.6 miles of sanitary sewer. Study elements included hydraulic modeling, flow
monitoring, manhole inspections, smoke testing, dyed-water testing and field
surveys. Wade also provided manhole rehabilitation design, rehabilitation
scheduling and site verification.
PROJECT: Sanitary Sewer Hydraulic Model
LOCATION: Enid,
Oklahoma
SCHEDULE: February 1991
PROJECT SCOPE:
The project team conducted a sanitary sewer evaluation and rehabilitation program for
reduction of extraneous wet-weather induced wastewater flows in 246-mile sanitary sewer
system. Field surveys included flow monitoring, manhole inspections, visual pipe
inspections, smoke testing, dyed-water testing and internal television inspection.
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