FROM: James D. Herberg, General Manager
Originator: Kathy Millea, Director of Engineering
SUBJECT:
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TRICKLING FILTER SLUDGE PUMP ROOM EXHAUST FAN RELOCATION AT PLANT NO. 2, PROJECT NO. FR2-0013
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION: Recommend to the Board of Directors to:
A. Receive and file Bid Tabulation and Recommendation for Trickling Filter Sludge Pump Room Exhaust Fan Relocation at Plant No. 2, Project No. FR2-013;
B. Reject low bid from MLC Constructors, Inc. as non-responsive;
C. Award a Construction Contract to Mehta Mechanical Co., Inc. DBA MMC, Inc. for Trickling Filter Sludge Pump Room Exhaust Fan Relocation at Plant No. 2, Project No. FR2-0013, for a total amount not to exceed $184,000; and
D. Approve a contingency of $36,800 (20%).
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BACKGROUND
The Trickling Filter/Solids Contact Facility is one of two secondary treatment processes at Orange County Sanitation District (OC San) Plant No. 2. The facility includes a below-grade pump room that requires ventilation for Operations and Maintenance staff to safely access and to remove heat generated by the pump motors.
RELEVANT STANDARDS
* California Public Contract Code Section 20103.8: Award Construction Contract to lowest responsive, responsible bidder
* Commitment to safety & reducing risk in all operations
* Maintain a proactive asset management program
PROBLEM
Ventilation of the Trickling Filter Sludge Pump Room depends on an exhaust fan located 15 feet above the floor that cannot be safely accessed for routine and corrective maintenance.
PROPOSED SOLUTION
Award a Construction Contract for Trickling Filter Sludge Pump Room Exhaust Fan Relocation at Plant No. 2, Project No. FR2-0013. This project will replace the existing fan with a new wall-mounted fan that can be safely accessed from the ground level.
Replacement of the fan requires the existing duct work and fan to be removed first. To avoid overheating and...
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