HomeMy WebLinkAboutResolution No. 2012-056
CITY OF THE COLONY, TEXAS
RESOLUTION NO. 2012- t ' )
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF THE
COLONY, TEXAS, APPROVING THE PROFESSIONAL SERVICES
CONTRACT BY AND BETWEEN THE CITY OF THE COLONY AND
CAROLLO ENGINEERS, INC. FOR ENGINEERING SERVICES IN
CONNECTION WITH THE STEWART CREEK WASTEWATER
TREATMENT PLANT EXPANSION PLAN AND SITE UTILIZATION
STUDY, WHICH IS ATTACHED HERETO AND INCORPORATED
HEREIN AS EXHIBIT "A"; AUTHORIZING THE CITY MANAGER TO
EXECUTE THE CONTRACT; AND PROVIDING AN EFFECTIVE DATE
WHEREAS, the City and Consultant have entered into a Contract such that the
Consultant is to provide the following services: ENGINEERING SERVICES IN
CONNECTION WITH THE STEWART CREEK WASTEWATER TREATMENT PLANT
EXPANSION PLAN AND SITE UTILIZATION STUDY; and
WHEREAS, the City has determined that it is in the best interest of the City to enter into
the Contract with Carollo Engineers, Inc., which is attached hereto and incorporated herein by
reference as Exhibit "A," under the terms and conditions provided therein; and
WHEREAS, with this Contract the City of The Colony is agreeing to pay the sum of
$67,915 for such work.
THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF
THE COLONY, TEXAS THAT:
Section 1. The Professional Services Contract, which is attached hereto and incorporated
herein as Exhibit "A", having been reviewed by the City Council of the City of The Colony, Texas,
and found to be acceptable and in the best interest of the City and its citizens, be, and the same is
hereby, in all things approved for a total amount of $67,915.
Section 2. The City Manager is hereby authorized to execute the Contract on behalf of the
City of The Colony, Texas.
Section 3. This Resolution shall take effect immediately from and after its adoption and
it is so resolved.
PASSED, APPROVED and EFFECTIVE this 3rd day of July, 2012.
ATTE is
14e McC `our Mayor
City of The(Colony, Texas
s» a
Chris ie Wilson, City Secretary
APPROVED AS TO NORM:
Jeff Moore, (ity Attorney
SCOPE OF SERVICES
TASK ORDER NO. 3
CITY OF THE COLONY
STEWART CREEK WWTP EXPANSION - WASTEWATER TREATMENT
EXPANSION PLAN AND SITE UTILIZATION STUDY
BACKGROUND
Wastewater flows to the City of The Colony's Stewart Creek Wastewater Treatment Plant
(WWTP) are anticipated to increase at a faster pace than anticipated in the Wastewater
Master Plan Update (by others). The increased flows are associated with new large
developments occurring on the south side of the City. To provide treatment for the
increased wastewater flows, capacity improvements will be required at the Stewart Creek
WWTP.
In an effort to optimize existing capacity, the Stewart Creek WWTP received improvements
to the air scour system for the existing web-based IFAS media modules in treatment Trains
A and B. These improvements should increase the treatment capacity of Trains A and B
and, consequently, impact the results from the recently completed Nitrification Optimization
Project, where the capacity required for a new Train C depends on the actual capacity of
Trains A and B. For this reason, the new capacity of Trains A and B must be determined to
re-evaluate the improvements required to reliably and consistently meet the discharge
permit at future flows and loads. The purpose of this Task Order No. 3 is to identify the
Scope of Work, Fee, and Time of Performance to determine the capacity of Trains A and B
after the air scouring upgrade, to revisit previously developed treatment alternatives and
evaluate capacity of treatment processes that were not previously included. In addition, a
plan will be developed to expand the plant to the build-out capacity on the existing site.
SCOPE OF WORK
TASK 1.0 TRAINS A AND B CAPACITY EVALUATION
1.1 Collect and Review Historical Plant Data
Professional shall coordinate with City staff to obtain historical plant data generated after
August 31st, 2011. Data will include influent flows, influent/effluent wastewater quality, daily
wastewater characteristics, solids handling facilities data, chemical usage, and electrical
power usage.
1.2 Review Stress Test Protocol
Professional shall coordinate with City staff to review a protocol developed by others to
demonstrate that Train B can meet the performance specification established during the
design of the existing IFAS system .
1.3 Analyze Stress Test Results
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Professional shall coordinate with City staff to obtain the process and operating data
generated during the stress tests. Professional shall analyze the data obtained during the
Stress Test.
1.4 Recalibrate Biological Model
Professional will modify the process model for the WWTP based on the process and
operating data obtained during the stress test. Professional shall benchmark the treatment
performance of Trains A and B and estimate the capacity at annual average and maximum
month flow conditions.
TASK 2.0 WASTEWATER TREATMENT EXPANSION PLAN AND SITE
UTILIZATION STUDY
2.1 Update the Biological Model for Process Alternatives
Professional will modify the process models for the WWTP to evaluate three (3) process
alternatives to allow the plant to meet current and future effluent requirements including a
build-out flow of 6.2 mgd. The model will include the current plant and any additional
facilities required to meet effluent requirements. The model will incorporate previously
collected data and flow projections from the Phosphorus Removal Project as collected by
City staff.
2.2 Analyze Process Alternatives and Layout the Site for Expansion to Build-Out
Capacity
Professional will re-evaluate process alternatives with City staff to determine the most
operator friendly, biologically stable, and cost effective of the three (3) evaluated
alternatives. The alternatives will be expanded to include the expansion of the headworks,
filters, UV disinfection facility and effluent flow measurement which have not been
evaluated in either the Phosphorus Removal Study or the Nitrification Optimization Study.
New facilities will be arranged on site to meet TCEQ 217 setback requirements.
Approximate electrical loads will be established, plant electrical system will be evaluated,
and expansion alternatives, if required, will be developed. An additional alternative of
Secondary Process Replacement with equally sized trains will be evaluated to provide
better operability and plant control.
2.3 Update the Capital and O&M Cost Estimate
Professional will update conceptual cost estimates including capital and operations and
maintenance costs for use in alternative evaluation.
TASK 3.0 DELIVERABLES
Professional will prepare a Plant Expansion Plan and Site Utilization Technical
Memorandum (TM) to summarize and document the results. The TM will be discussed with
the City in a workshop.
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• Draft Report - six (6) hard copies and electronic file.
• Final Report - six (6) hard copies and electronic file.
TASK 4.0 PROJECT MANAGEMENT, QUALITY MANAGEMENT, AND MEETINGS
4.1 Project Management
Professional will manage professional services to complete the project. These services will
include preparation of invoices, progress reports, and directing staff and internal resources
in a manner so that project milestones and deliverables are met as scheduled.
4.2 Quality Management
Professional will provide quality management services for the project. The professional's
quality management team will ensure that the project deliverables adhere to schedule and
quality expectations.
4.3 Project Meetings and Workshops
Professional will conduct project meetings and workshops to obtain key decisions and input
from the City. Professional will be responsible for developing meeting agendas, meeting
materials, and draft meeting minutes within one week after the meeting date. Meeting
minutes will include a list of action items and a decision log. The project will consist of two
meetings and workshops as follows:
■ Project Kickoff Meeting
Workshop - Plant Expansion Plan and Site Utilization Review
4.4 Project Progress Monitoring and Status Reports
Professional will monitor project progress. Professional will prepare project invoices,
together with a progress report and will submit these on a monthly basis to the City.
FEE
City and Professional have established a not-to-exceed budget of $67,915.00 to complete
all services under this Task Order. This amount will not be exceeded without a contract
amendment. City will pay the Professional a lump sum amount for services identified in
Task Order No. 3.
Attachment 1 shows the estimated fee amount for each task. These amounts do not reflect
an actual ceiling per task. Fee may be reallocated between tasks at Professional's sole
discretion as long as the total lump sum budget is not exceeded
Professional agrees to complete these services for this amount, unless the fee is amended
as a result of a change to the Scope of Work or Time of Performance.
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The fee assumes that all work will be completed within 120 calendar days from the Notice
to Proceed. Should the project be delayed beyond this time for any reason, the Professional
reserves the right to renegotiate the agreement to cover actual cost.
TIME OF PERFORMANCE
Professional shall commence work immediately following notice to proceed. Professional
has reviewed the project with City and agrees that the following schedule is a reasonable
time frame within which to accomplish the work.
Days After Notice to Proceed
Submit Draft Report 90 days after notice to proceed
Submit Final Report 30 days after receipt of City comments
Professional/City mutually agree that they will work toward meeting the schedule. Should
the Scope of Work be changed and/or should problems arise during the course of the work
effort that could affect the above schedule, it is understood that both City and Professional
will develop a revised schedule and budget limit, if required, to address scope changes,
delays by City or other problems.
CAROLLO ENGINEERS, Inc. CITY OF THE COLONY
Accepted this day of , 2012
'Al
i., ' E
By: - - By:
Vice President Assistant City Manager
By: _
Vice si
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