FROM: James D. Herberg, General Manager
Originator: Kathy Millea, Director of Engineering
SUBJECT:
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LABORATORY BUILDING HVAC CONTROLS REPLACEMENT AT PLANT NO. 1, PROJECT NO. FR1-0014
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION:
A. Receive and file Bid Tabulation and Recommendation for Laboratory Building HVAC Controls Replacement at Plant No. 1, Project No. FR1-0014;
B. Award a Service Contract to Retrofit Service Company, Inc. for Laboratory Building HVAC Controls Replacement at Plant No. 1, Project No. FR1-0014, Specification No. S-2021-1276BD, for an amount not to exceed $176,847; and
C. Approve a contingency of $17,685 (10%).
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BACKGROUND
The Orange County Sanitation District (OC San) conducts a wide range of sample collection and analyses to comply with permit-required reporting requirements and to assist with operations and troubleshooting. This work is primarily performed in the two-story, 36,000-square foot Laboratory at Plant No. 1. The building was completed in 1990. The analytical equipment and testing procedures require consistent interior environmental conditions including temperature, humidity, and air flow 24 hours per day. OC San is nearing completion of the Laboratory Rehabilitation Feasibility Study, Project
No. PS19-03, which is evaluating the best long-term option for rehabilitating or replacing the Laboratory.
RELEVANT STANDARDS
* Ensure the public's money is wisely spent
* Comply with environmental permit requirements
PROBLEM
The existing heating, ventilation, and air conditioning (HVAC) control system uses obsolete pneumatic controllers that are no longer reliable. The HVAC system has failed multiple times in the past requiring labor-intensive efforts to maintain reliable operations. Without consistent HVAC controls in the building, certain analyses cannot be successfully performed to meet certification requirements included in permits.
PROPOSED SOLUTION
Awar...
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