FROM: James D. Herberg, General Manager
Originator: Kathy Millea, Director of Engineering
SUBJECT:
title
A-SIDE PRIMARY TREATMENT CLARIFIERS REPLACEMENT AT PLANT NO. 2, PROJECT NO. P2-98A
end
GENERAL MANAGER'S RECOMMENDATION
recommendation
RECOMMENDATION:
Adopt Resolution No. OCSD 20-07 entitled, "A Resolution of the Board of Directors of the Orange County Sanitation District, making findings pursuant to Public Contract Code Section 3400 in support of the Sole Source Specification of Hallsten Corporation, manufacturer of Truss Supported Flat Aluminum Covers for A-Side Primary Clarifiers Replacement at Plant No. 2, Project No. P2-98A, as part of Primary Treatment Rehabilitation at Plant No. 2, Project No. P2-98".
body
BACKGROUND
Orange County Sanitation District's (Sanitation District) primary clarifiers are used to remove suspended solids before biological treatment and can be a significant source of odors. The existing primary treatment system at Plant No. 2 consists of 14 circular clarifiers. The clarifiers are covered with geodesic domes to capture foul air for treatment at two large foul air treatment facilities.
A-Side Primary Clarifiers Replacement at Plant No. 2, Project No. P2-98A, will demolish four existing primary clarifiers, a power building, and an air treatment facility, and will construct four new primary clarifiers with flat covers, a new odor control and chemical facility, a new electrical distribution center building, and ancillary facilities and utilities.
RELEVANT STANDARDS
* Ensure the public's money is wisely spent
* Comply with Public Contract Code Section 3400
* Comply with OCSD Policy - Purchasing Ordinance No. OCSD-52, Section 1.07.A Sole Source Procurement
PROBLEM
The primary clarifiers must be covered to capture foul air. Operations staff, however, need access to the water surface for visual observation and to take daily samples. The two options for the cover are a dome and a flat cover system. With dome ...
Click here for full text