FROM: James D. Herberg, General Manager
Originator: Rob Thompson, Assistant General Manager
SUBJECT:
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PLANT NO. 2 KNIFE GATE VALVE REPLACEMENT FOR TRUCKLOADING
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION:
A. Approve a Sole Source Purchase Order to CS-AMSCO for the procurement of 12 Dezurik replacement knife gate valves along with their mounting components for the Plant No. 2 Truckloading Facility, for a total amount not to exceed $148,032 plus applicable sales tax and shipping; and
B. Approve a contingency of $14,803 (10%).
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BACKGROUND
Approximately 200 tons per day of biosolids are generated from the wastewater treatment processes at the Orange County Sanitation District (Sanitation District) Plant No. 2 in Huntington Beach. These biosolids are loaded in trucks for reuse through two truckloading bays.
Each truckloading bay has six auger/valve sets that serve as discharge points to trucks. The knife gate valves were installed in the Solids Storage and Truckloading Facility during original construction nearly 20 years ago. These valves stop the flow of biosolids to trucks.
RELEVANT STANDARDS
* 24/7/365 treatment plant reliability
* Safe, beneficial reuse of Biosolids
PROBLEM
The knife gate valves have reached the end of their useful life and are showing signs of deterioration. The valves have limited accessibility and greatly impact the ability to load trucks with biosolids.
PROPOSED SOLUTION
Procure 12 replacement valves manufactured by Dezurik Valves as specified in the original design. This will allow replacement of the valves and previously approved augers at the same time.
TIMING
Critical solids processing equipment can potentially fail resulting in constraints to transferring biosolids to trucks or the overloading of trucks, at Plant No. 2. Additionally, the knife gate valves can be procured and replaced at same time as the truckloading augers replacement project scheduled ...
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