The City of Independence, Kansas, is Accepting Proposals for Engineering Services Relating to the Addition of a Vfd and Increasing
Capacity of a Low-lift Service Pump for the City's Water Treatment Plant, Meeting All Attached Requirements. Proposals Shall Be Enclosed in a Sealed Envelope Plainly Marked on the Outside "low-lift Pump Engineering Services".
If Proposal is Mailed, the Original Envelope Shall Be Enclosed in a Separate Envelope Addressed to the City Clerk, Also Plainly Marked
on the Outside as Stated Above. The Apparent Low Proposal Will Then Be Presented to the Independence City Commission at a Future
Meeting for Their Formal Action. The City Reserves the Right to Accept or Reject Any or All Proposals or to Waive Any Irregularities Should Any Occur as May Best Benefit
the City. The City Manager May Require That No Proposer May Withdraw a Proposal for a Period of Up to Forty-five (45) Days After
the Date and Hour Set for Opening Proposals, but That a Proposal May Be Withdrawn Up to Twenty-four (24) Hours Prior to Expiration
of the Deadline for Submitted Proposals. The Purpose of This Request for Proposal (Rfp) is to Solicit Proposals From Qualified Engineering Firms to Perform Engineering Services
Relating to Low-lift Service Pumps Located at the Independence Water Treatment Plant.
There Are Three Low Service Pumps at the Water Treatment Plant. These Pumps Are Used to Pull Water From the Verdigris and Into the
Plant for Treatment, the Nominal Capacity of These Three Pumps Are 4 Million Gallons Per Day (Mgd), 3 Mgd, and 2mgd.
The Largest Volume Pump (4mgd) is Controlled Using a Variable Frequency Drive (Vfd). This Allows the Rotation of the Pump to Vary
So That the Pump Can Match the Rate of Water Production. Only One Pump Has This Ability, and It is the Most Used Pump.
The Other Pumps Do Not Have Vfds and Are Either on at Full Capacity or Off. This Leads to an Inconsistent Water Flow Which,
Though Manageable Since the Plant Operated Without Vfds for Decades, is One Additional Variable in Plant Operations.
Additionally, Having Each of the Three Pumps With a Capacity Sufficient to Cover the Flow Range Anticipated by the Plant Would
Provide Greater Redundancy, and the Ability to Upgrade the Existing 2mgd Pump to a Higher Capacity Through Upgrades (Motor, Impeller,
Etc.) or Replacement Will Also Be Studied.
The Awardee Should Perform a Comprehensive Condition Assessment of All Systems Required to Support the Replacement or Upgrade of
One of the Existing Low-lift Service Pumps Including All Related Systems (Electrical, Control, Mechanical, Hydraulic, Cooling, Sealing,
Safety, and Monitoring Systems), the Replacement Pump Should Be Substantially Similar to an Existing, Installed Pump, and the City Has
Substantial Information on the Desired Pump, the Awardee Should Also Provide an Evaluation of the Pump and Relevant Systems for the
Implementation and Installation of a Variable-frequency Drive (Vfd). The Results Shall Be Submitted to the City in a Report Detailing the
Current Pump Performance, Existing Condition Deficiencies, Recommended Immediate Improvements (if Any Exist), Cost of
Replacement of the Pump, and the Cost of Installation of a Variablefrequency Drive (Vfd) Followed by a Complete Design Package
Suitable for Bidding.
Factors Such as Peak Demand, Flow Rate Variations, Pressure Requirements, Compatibility and Interoperability With Current
Systems, Energy Efficiency, Reliability and Maintenance, Operational Safety, Instillation and Downtime, and Regulatory Compliance Should
All Be Considered When Evaluating Replacement Pump Options. Services Shall Be Performed at the Water Treatment Plant Located at
520 E Oak St, Independence, Ks 67301.
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