Sparks City Council Meeting 6/10/2019 2:00:00 PMMonday, June 10, 2019 2:00 PM
Council Chambers, Legislative Bldg, 745 4th Street, Sparks, NV
General Business: 9.8
Total Costs: $70,485.00
Fund: Joint Treatment Plant Account: 604070
Program: TMWRF Operations (131505)
Amount: $70,485.00 Budget Status: Budget Exists
A Business Impact Statement is not required because this is not a rule.
Staff is asking City Council to approve a contract to purchase and install an Accusonic flow monitoring system to measure the outfall from TMWRF. Engineering analysis has shown that the current outfall measurement may be over-reporting the flow. Additionally, US EPA policies encourage redundant flow measurement.
TMWRF currently measures the treatment plant outfall using a Cipoletti Weir. Accurate measurement of the outfall is a condition of the TMWRF discharge permit. Additionally, compliance with the three TMDLs, total nitrogen, total phosphorus and total dissolved solids, is dependent on the total outfall flow measurement. An engineering analysis of the outfall structure indicated that the flow was not being measured within acceptable limits. Additionally, US EPA policies encourage redundant outfall measurement to ensure accuracy. TMWRF currently does not have a redundant outfall measurement.
The outfall structure analysis investigated alternative measurement technologies and determined that the ADS Accusonic Model 8510+ system was the best available technology for our application. This analysis was reviewed by the Nevada Division of Environmental Protection (NDEP) and they concurred with this conclusion.
Once installed, this flowmetering system can be used to create a calibration curve for the existing Cipoletti Weir. This will then establish redundant flow measurement as recommended by US EPA.
Because the engineering analysis determined the Accusonic system was the most suitable for TMWRF, no competitive bid was held. Staff is seeking City Council approval of a sole-source purchase of the flow metering system. The proposed scope of work includes the purchase and installation of the flow measurement system at TMWRF. Installation by the factory technicians is necessary to ensure the system functions within the stated accuracy. The cost of the system will be charged to the TMWRF Operational Budget and be split between the City of Sparks and Reno. Based on current plant ownership, the City of Sparks’ share of this work is $22,111.14.
- City Council may approve the purchase as presented by staff
- City Council may reject the purchase and provide direction to the City Manager
I move to approve the contract (AC-5579) with ADS, LLC for the purchase and installation of an Accusonic Flowmeter System in an amount not to exceed $70,485.00 with Sparks share of the cost being $22,111.14.
Sparks.TMWRF.ACC.NV19 (part 1) - signed.pdf