STRATEGIC PRIORITY: Government Performance & Financial Management
AGENDA DATE: February 8, 2023
COUNCIL DISTRICT(S): All
DEPARTMENT: Office of Procurement Services
EXECUTIVE: Jack Ireland
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SUBJECT
Title
Authorize a four-year master agreement for the purchase of aeration and ozone basin diffusers and parts for the Water Utilities Department - Hartwell Environmental Corp. in the estimated amount of $1,820,000, Evoqua Water Technologies LLC in the estimated amount of $1,440,000, and Environmental Dynamics International, Inc. in the estimated amount of $5,000.00, lowest responsible bidders of three - Total estimated amount of $3,265,000 - Financing: Dallas Water Utilities Fund
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BACKGROUND
This action does not encumber funds; the purpose of a master agreement is to establish firm pricing for goods, for a specific term, which are ordered on an as needed basis according to annual budgetary appropriations. The estimated amount is intended as guidance rather than a cap on spending under the agreement, so that actual need combined with the amount budgeted will determine the amount spent under this agreement.
This master agreement will provide for the purchase of aeration and ozone basin diffusers and parts for the Water Utilities Department. Air diffusers are flexible membranes with small holes that allow air to be distributed in a controlled manner in order to maintain consistent oxygen levels throughout the basins. This air distribution is essential for the proper development of micro-organisms and the processing of sludge. Ozone diffusers are gas permeable membranes that disperse the gas stream into many smaller ozone gas bubbles in the water to provide a more uniform transfer of ozone into the water.
Proper ozone distribution is critical to the disinfection process, eliminating contaminates such as bacteria, viruses and metals. Over time, the membranes wear out and begin to tear, at ...
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