FROM: Rob Thompson, General Manager
Originator: Riaz Moinuddin, Director of Operations & Maintenance
SUBJECT:
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REGIONAL ODOR AND CORROSION CONTROL SERVICES (ROCCS) PROGRAM, SPECIFICATION NO.C-2017-899BD - CONTINGENCY INCREASE
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION: Recommend to the Board of Directors to:
Approve a chemical unit price contingency increase of $398 per dry ton (an additional 40% of the base price) to the Ferrous Chloride contract with Hill Brothers Chemical Company for the remainder of the term, July 1, 2022 through June 30, 2023. The new unit price will not exceed $1,397 per dry ton ($1,297 for the product, plus $100 for freight).
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BACKGROUND
The Orange County Sanitation District (OC San) uses chemical injection systems in its collection system to reduce the formation of Hydrogen Sulfide (H2S) gas in the vapor space. H2S is a nuisance and corrosive gas. When left untreated, it will corrode concrete and steel. The ROCCS program operates 10 continuous chemical dosing sites in nine member agency cities to control H2S formation for asset preservation and nuisance odor reduction. Staff maintains oversight and daily interaction with the outsourced service providers.
In May 2018, OC San awarded Hill Brothers Chemical Company (HBCC) and USP Technologies contracts for supplying, delivering, and dosing services of ferrous chloride, magnesium hydroxide, and calcium nitrate. These agreements provide continuous chemical dosing within the regional trunk system and major tributary sewers using a combination of three chemicals synergistically. In addition to supplying the chemicals, the suppliers provide all necessary equipment, including tanks, containment, pumps, piping, secure fencing, equipment monitoring, and pump rates. OC San is rebidding the Ferrous Chloride contract, which is expected to become effective June 30, 2023.
RELEVANT STANDARDS
* 12 or fewer odor complaints per year under normal o...
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