FROM: James D. Herberg, General Manager
Originator: Riaz Moinuddin, Director of Operations & Maintenance
SUBJECT:
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PURCHASE OF SODIUM HYPOCHLORITE (BLEACH SOLUTION) FOR ODOR CONTROL AND PLANT WATER DISINFECTION IN THE TREATMENT PLANTS
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION: Recommend to the Board of Directors to:
A. Approve a Chemical Supplier Agreement to Olin Corporation dba Olin Chlor Alkali Products and Vinyls for the purchase of Sodium Hypochlorite (Bleach), Specification No. C-2022-1346BD, for the period beginning December 1, 2022 through May 31, 2023 for a unit price of $1.728 per gallon delivered, plus applicable sales and excise tax, for a total estimated cost of $632,708;
B. Approve the option to renew the Chemical Supplier Agreement over a five-year period, expiring November 30, 2027, with renewal terms not to exceed a 12-month term; and
C. Approve renewal adjustments of unit pricing with a not to exceed unit price of $2.16/gallon (25%).
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BACKGROUND
Orange County Sanitation District (OC San) utilizes sodium hypochlorite (bleach) for treatment of foul air collected from the collection system and the treatment plants. The foul air is treated in chemical scrubbers using sodium hypochlorite in accordance with AQMD requirements for oxidizing hydrogen sulfide from the foul air. Sodium hypochlorite is also used to disinfect plant water that is used in the treatment plants. Additionally, sodium hypochlorite is required, per NPDES permit requirements, to be available for emergency outfall disinfection purposes.
Staff estimates 61,000 gallons of bleach usage per month at the treatment plants.
Like many chemicals in the current economy, sodium hypochlorite has been subject to volatile pricing and supply constraints. In this environment, the vendors suggested an initial contract length of six months to limit pricing risk to both OC San and the vendors.
RELEVANT STANDARDS
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