HomeMy WebLinkAbout04. Headworks Screening Upgrade and Sub 16 Switchgear Replacement4.
HEADWORKS SCREENING
UPGRADE AND SUB 16
SWITCHGEAR REPLACEMENT
September 9, 2015
Engineering and Operations
Committee Meeting
Brad Leidecker, Associate Engineer
Central Contra Costa Sanitary District
Background
• Headworks Screens and Electrical Switchgear
Installed in 1993
• Screenings Discharged to Grinders and Re-
introduced
— Value Engineered, 1991
• Switchgear Feeds Headworks Screens and
Influent Pumps
• Projects Combined for Coordination and
Efficiency
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Project Drivers
• Equipment Fouling — Liquid and Solids Streams
• Future Maintenance of Equipment and
Availability of Parts
• Potential HCL Emission Improvements
• Improve Odor Control
• Potential Final Effluent Turbidity /Floatables
• Switchgear Reliability
— Parts Availability: Short Production Run, Obsolete Parts
— Reconditioning Service: Poor Quality
— Breaker Tests: Several Breakers Failed Testing
— Corrosion
Project Descriptions
• Headworks Screening Upgrades (DP 7327):
- Evaluate Alternatives for Screening of Raw
Wastewater and Handling of Screenings at the
Existing Headworks and Recommend the Most
Strategic and Cost Effective Solution
- Proceed with Design and Construction to Implement
the Recommended Solution
• Headworks (Sub 16) Electrical Switchgear
Replacement (DP 7324):
- Remove and Replace the Existing Switchgear
including Modifications to the Existing Building as
Required
M-
61
Sub 16 Switchgear
:61�
Schedule
Request for Proposals from Consultants Issued August 19, 2015
Consultant Notice to Proceed November 2, 2015
Switchgear Preliminary and Final Design
March 2016
Complete
Headworks Screening Preliminary and Final
August 2016
Design Complete
Switchgear Replacement Construction
October 2016
Complete
Headworks Screening Upgrades Construction
November 2017
Complete
Project Budget
• Fiscal Year 2015 -16 CIB Total Estimated
Project Budgets:
— Headworks Screening Improvements $6.91VI
— Switchgear Replacement $2.1 M
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Questions