2020 2:00:00 PM

Meeting Link: https://zoom.us/j/92302995013
Meeting Dial-in #: 1-669-900-6833 Meeting ID: 923 0299 5013

General Business: 9.7

Title: Consideration, discussion, and possible approval of a construction contract (AC-5666) for the Sanitary Sewer Manhole Rehab Project, PWP# WA-2020-250, with National Coating and Lining, in the amount of $638,849.

Petitioner/Presenter: John Martini, P.E., Assistant City Manager/Kevin Porter P.E., Utility Manager

Recommendation: Staff recommends the City Council approve the construction contract with National Coating and Lining.

Financial Impact: $638,849.00 will be funded out of Fund 1631 Sewer CIP Rehab, Replace, Upgrade Existing, Account 604150 Sewer Lines. Amount currently available is $702,100.00

Total Costs: $638,849.00

Fund: Sanitary Sewer Cap Proj Fund Account: 604150
Program: Sanitary Sewer Manhole Rehab (20-6582)
Amount: $638,849.00 Budget Status: Budget Exists

Business Impact (Per NRS 237):
A Business Impact Statement is not required because this is not a rule.

Agenda Item Brief:

This project consists of installing structural liners in 70 sanitary sewer manholes throughout the City of Sparks. These manholes exhibited various signs of deterioration, primarily structural voids that allow groundwater to infiltrate into the manhole and sewer collection system, during recent annual inspections. This project was approved in the FY20 Capital Improvements Plan.

Background:

The City of Sparks has nearly 10,000 sanitary sewer manholes as part of the sewer collection system. Occasionally, manholes will deteriorate and require rehabilitation. Annual inspections have revealed that manhole deterioration has led to groundwater infiltration in approximately 200 sanitary sewer manholes, primarily located in northern Sparks where high groundwater is common.

The scope of the manhole rehabilitation work includes sealing the interior voids of the manhole with an impervious grout. Then, the entire interior surface of the manhole is coated with an epoxy liner which setups up to provide a waterproof structural liner that resists corrosion from gases common in sanitary sewer systems.

Analysis:

Three bids were received at City Hall on April 22, 2020 as a result of the formal bid process prescribed by statute. The engineer’s estimate was $703,120. National Coating and Lining submitted the low bid for this project in the amount of $638,849. H&R Plumbing and Drain Cleaning was determined to be a non-responsive bidder due to not self-listing as a sub-contractor, as required by NRS 338.141. A bid recap is provided below for Council’s review:

National Coating and Lining	$638,849
Farr dba Resource Development	$804,440
H&R Plumbing and Drain Cleaning*	$629,340

*Non-responsive bid

Alternatives:

Council could approve the contract as outlined by Staff.
Council could reject the contract and provide direction to the City Manager.

Recommended Motion:

I move to approve construction contract (AC-5666) for the Sanitary Sewer Manhole Rehab Project, with National Coating and Lining, in the amount of $638,849.

Attached Files:

01 - Vicinity Map - SS Manhole Rehab.pdf

02 - National Coating Contract-SS Manhole Rehab.pdf

03 - manhole infiltration.mp4

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