Emeryville City Council Meeting
July 15, 2025
North Interceptor Rehabilitation Emeryville -
Request for Noise Waiver Modification
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• Request: delay start of nighttime work/noise
waiver by 1-month
• Originally: 3-months, Jun. 1 – Aug. 31
• Revised: 3-months, Jul. 1 – Sep. 30
• Reason for request: project delay
• Initial noise waiver was based on preliminary
assumptions made prior to contract award
Request
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Agenda
Background
Project Scope
Nighttime Work
Noise Mitigation
Schedule
Next Steps
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Background
PROJECT
EBMUD WASTEWATER
TREATMENT PLANT
NORTH
INTERCEPTOR
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Background
PROJECT –
EMERYVILLE
CRITICAL SEGMENT
EBMUD
WASTEWATER
TREATMENT PLANT
EBMUD NORTH
INTERCEPTOR
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Project Scope
N31
N32
N33
N34
N35
N35A
NORTH
INTERCEPTOR
MANHOLE, TYPICAL
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Recent Interceptor Sinkholes
Apr 8, 2022 at 3:52:33 PM
Dennison St
Oakland CA 94606
United States
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Bypass Pump System
MAIN BYPASS PUMPS –
SUCTION PIT
N31
N32
N33
N32E
SIDESTREAM PUMPS
BURIED CROSSING
N34 N35
N35A
SIDESTREAM PUMPS
NORTH
INTERCEPTOR
BYPASS PIPING
24/7 July to September
BYPASS
DISCHARGE
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Cured-In-Place Pipe Liner Insertion Pit
July to September
N31
N32
N33
N34 N35
N35A
INSERTION PIT
CIPP = cured-in-place pipe liner
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Manhole Rehabilitation
July to September
N31
N32E
N34 N35 NORTH N35A
INTERCEPTOR
N33 N32
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• Most of work will be at the Caltrans fence line
• Sound attenuated equipment & noise dampening
enclosures
• Main Bypass Pumps located away from
residences
• Noise monitoring before and during construction
• Rehabilitation by cured-in-place pipe liner (CIPP)
o Changed from sliplining to reduce number of
pits and proximity to residences
Noise Mitigation
dBA = decibel A
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Schedule
DEC
SUBMITTALS, MATERIALS, PERMITS
NOISE WAIVER
24/7 BYPASS PUMPS ON
SITE RESTORATION & CLOSEOUT
WET WEATHER
MH REHAB
WET WEATHER
EXCAVATION
PIPE REHAB
DRY WEATHER
JUL AUG SEP OCT NOV
2025
FEB MAR APR MAY JUN
START
FINISH
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Photo caption
Questions?