Agenda Item: 7(c)
Prepared By: Jeffrey E. Poteet
Business: Contract Award and PO Authorization
Department: Water and Sewer
Subject:
Title
Contract Award to All Webbs Enterprises, Inc. for Rehabilitation of RO Production Wells #17 and 18 in the Amount of $192,500 and Authorize a Purchase Order to Water Science Assoc. in the Amount of $29,500 for Well Rehabilitation Oversight Services
Body
BACKGROUND:
The City has 20 brackish water wells (of which only 14 are in service) which provide source water for the south water treatment plant (SWTP) reverse osmosis (RO) filtration and treatment process. These 14 wells provide approximately 28% of the City's drinking water. The wells are
experiencing declining production capacities due to carbonate mineral precipitation, which is a common occurrence in limestone aquifer wells. The precipitate clogs the porosity in the well walls, resulting in greater drawdown which ultimately results in failure of the well to produce water. The wells have reached a critical point where rehabilitation is needed for all the wells. This contract award and purchase order authorization addresses the first pair of wells that need rehabilitation. Staff will be requesting approval in the renewal, replacement, and improvement budget starting in FY 20 for a well maintenance program to evaluate and rehabilitate all remaining wells.
The City publicly bid the acidification of well's 17 and 18 and opened the following five bids on April 25, 2019:
Bidder
Amount
All Webbs Enterprises
$192,500
Wells and Water Systems
$215,820
A.C. Schultes
$223,630
Layne Christensen
$234,531
Youngquist Brothers
$327,662
All of the above bids include a 10% owner's contingency allowance. City Staff and the City's consultant reviewed the bids and recommend the award of Contract to All Webbs Enterprises which submitted the lowest, responsive, and responsible bid.
Additionally, Water Science Associates (WSA) is the City's hydrogeology consultant for this pro...
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