REPORT TO COUNCIL
SUBJECT
Title
Authorize the Issuance of a Purchase Agreement to Univar Solutions USA, LLC in the Amount of $753,000 for Sodium Hypochlorite (F26-431)
Report
STAFF RECOMMENDATION
Recommendation
Take the following actions:
- Award a Purchase Agreement in the amount of $753,000 to Univar Solutions USA, LLC of Chicago, IL to provide sodium hypochlorite at the Water Pollution Control Plant (Plant);
- Authorize the City Manager to execute the agreement when all necessary conditions have been met;
- Authorize the City Manager to increase the not-to-exceed amount for this contract, subject to available budget and if pricing and service remain acceptable to the City; and
- Authorize the City Manager to renew the purchase agreement for up to three (3) additional one-year periods, if the Bay Area Chemical Consortium (BACC) regional award contract with Univar Solutions is renewed or extended, subject to the appropriation of funds by the City Council.
Report
BASIS FOR RECOMMENDATION
The final treatment process at the Plant is disinfection of wastewater with sodium hypochlorite (strong bleach) at a concentration of 12.5%. Depending on operating conditions, sodium hypochlorite is delivered to the Plant in 5,000-gallon bulk tankers two to four times per month. Chlorine in sodium hypochlorite effectively reduces the number of pathogens in the wastewater treated. Sodium hypochlorite is pumped into chlorine contact tanks and given time to oxidize organic material, dramatically reducing the number of pathogens in the plant effluent. Staff measure residual bacteria to determine how well the disinfection process works and measure the amount of residual chlorine once the disinfection process has concluded. The presence of residual chlorine ensures that as much organic material as possible has been oxidized. This critical treatment process ensures that the Plant discharges well-treated effluent, meets all regulatory effluent limitations, and protects public s...
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