FROM: Robert Thompson, General Manager
Originator: Kathy Millea, Director of Engineering
SUBJECT:
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NEWPORT BEACH PUMP STATION PRESSURIZATION IMPROVEMENTS, PROJECT NO. 5-68
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION:
A. Receive and file Bid Tabulation and Recommendation for Newport Beach Pump Station Pressurization Improvements, Project No. 5-68;
B. Award a Construction Contract to Innovative Construction Solutions for Newport Beach Pump Station Pressurization Improvements, Project No. 5-68, for an amount not to exceed $937,500; and
C. Approve a contingency of $93,750 (10%).
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BACKGROUND
The Orange County Sanitation District (OC San) operates seven pump stations in the City of Newport Beach coastal region which, together with the sewer trunk lines and force mains, convey flows to OC San Plant No. 2 in Huntington Beach. Air with significant concentrations of odorous, corrosive, and potentially hazardous gasses is also transported in the trunk lines. These pump stations were designed 15-50 years ago by different design consultants.
RELEVANT STANDARDS
* Comply with California Public Contract Code Section 20103.8, award construction contract to lowest responsive, responsible bidder
* 12 or fewer odor complaints per year under normal operating conditions in the collection system
* Operate and maintain facilities to minimize impacts on surrounding communities, including odor, noise, and lighting
* Commitment to safety & reducing risk in all operations
PROBLEM
The pump stations have inadequate venting, which can lead to pressurization of odor and hazardous gasses. When pressurized, these odors and gasses can escape via plumbing in the onsite bathroom facilities and any other connections to the wet wells, which can cause an unsafe condition for staff within the pump station and can also corrode the existing facilities. As an interim measure, staff has sealed all suspected leakage points, in...
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