FROM: Robert Thompson, General Manager
Originator: Riaz Moinuddin, Director of Operations & Maintenance
SUBJECT:
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PLANT NO. 1 SPARE SLUDGE TRANSFER PUMPS
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GENERAL MANAGER'S RECOMMENDATION
recommendation
RECOMMENDATION:
A. Approve a Sole Source Purchase Order to DXP Enterprises, Inc., dba CorTech Engineering LLC, for two spare progressive cavity pumps for a total amount not to exceed $177,444; and
B. Approve a contingency of 10% ($17,744).
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BACKGROUND
The sludge pumping system at Orange County Sanitation District’s (OC San) Plant No. 1 transfers primary sludge from the wet wells serving Primary Clarifiers 17 through 31 to the sludge blend tanks in the Co-Thickening Facility. These pumps and piping can also be configured to transfer primary sludge directly to digesters, providing operational flexibility in managing sludge transfer and treatment.
RELEVANT STANDARDS
• 24/7/365 treatment plant reliability
• Protect OC San Assets
• Protect public safety
• Maintain a proactive asset management program
PROBLEM
The Primary Sedimentation Basins No. 6-31 Reliability Improvements at Plant No. 1,Project No. P1-133, installed new Seepex progressive cavity pumps to support primary sludge transfer operations at Plant No. 1; however, spare pumps were not included in the project. These pumps are critical to transferring primary sludge from the clarifiers to the sludge blend tanks and digesters. Without readily available spare units, a pump failure could result in an extended outage due to the long replacement lead time. Prolonged interruptions to sludge transfer could lead to sludge accumulation, reduced primary treatment capacity, and increased risk to treatment plant reliability and regulatory compliance.
PROPOSED SOLUTION
Purchase two spare Seepex progressive cavity pumps through DXP Enterprises, Inc., dba CorTech Engineering LLC, the sole authorized representative of Seepex products in California. Maintaining these spare units will allow OC San to promptly replace failed pumps, minimize equipment downtime, and maintain reliable sludge transfer operations.
TIMING CONCERNS
The sludge transfer pumps have a 10-week lead time after order placement. Having a spare pump would minimize downtime and reduce the risk of disrupting the plant process and compromising regulatory compliance.
RAMIFICATIONS OF NOT TAKING ACTION
Without readily available spare pumps, equipment failures could result in extended sludge transfer interruptions, reduced operational flexibility, and increased risk to treatment plant reliability and regulatory compliance.
PRIOR COMMITTEE/BOARD ACTIONS
December 2016 - Approved Seepex as an Original Equipment Manufacturer (OEM) Sole Source provider for Seepex products.
ADDITIONAL INFORMATION
Seepex is the Board-approved OEM Sole Source. DXP Enterprises, Inc., dba CorTech Engineering LLC, is the sole authorized representative of Seepex products for California.
CEQA
N/A
FINANCIAL CONSIDERATIONS
This request complies with authority levels of OC San’s Purchasing Ordinance. This item has been budgeted (Budget FY2026-27 and 2027-28, Section 8, Page 82 and 86, Plant No. 1 Maintenance), and the budget is sufficient for the recommended action.
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Date of Approval |
Contract Amount |
Contingency |
|
11/04/2026 |
$177,444 |
$17,744 |
ATTACHMENT
The following attachment(s) may be viewed on-line at the OC San website (www.ocsan.gov) with the complete agenda package:
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