HomeMy WebLinkAboutItem 10 PPP 07-01-2020 Ops Comm_P1-105 Grit Washing Sole Source Sole Source
for Grit Washing &
Dewatering System
Headworks Rehabilitation
Project- P1 -105
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Kathy Millea, Director of Engineering
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Operations Committee
July 1 , 2020
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Headworks Rehabilitation
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M.-Plant No . 1 -.1 VA
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Steve Anderson Construction Cost: $293 million
Lift Station
Wastehau
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Sunflower r�o� 3
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eadworks Advertise for Bids: Sept 2020
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Construction Duration: 6.5 years
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Headworks Rehab of
Standby Power
Building Existing
Headworks Rehabilitation isZA
M.-Plant No . 1 -.1 VA
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Steve Anderson Construction Cost: $293 million
Lift Station
Grit Wastehau
Sunflower r�o� 3
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Building ����¢ Advertise for Bids: Sept 2020
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Construction Duration: 6.5 years
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Headworks Rehab of
Standby Power
Building Existing
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Grit Removal Facilities
Influent Wastewater Aerated Grit
Chambers
Containing Grit
Grit
Classifying
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Grit Bin
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Existing Grit
Handling
acilities in Poor ConditionA"
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• Obsolete mechanical equipment
• Grit has high organic and water content
• Poor grit capture
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Grit Washing
Evaluation -_ 4
Extensive studies performed :
• Existing grit system performance
• Grit characterization
• Grit washing technologies J
• Odor control requirements
• Life cycle cost analysis
Recommendation :
• Sole Source Huber COAN DA
grit classifier
..... ole Source Justification ' ' ►�`
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• Cleaner grit = lower foul air flow T - '
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• Cleaner grit = lower disposal costs
• Cleaner grit = more reusable solids capture
• $3 million lower life cycle cost than J
conventional grit classifier facility
• No other high-performance grit handling
system found
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• $2.3 million pricing commitment from
supplier. Verified as reasonable for similar
installations d
Pro osed Grit Handlin Buildin �.y ��
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Built Around S ecific E ui ment �.�
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DRAIN PIPE(TYPI
Building -
and mezzanine
Ground floor
GRIT WA HER(TYP)
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Building
ventilated to Associated grit
odor c• •
Recommended ActionWit
Adopt Resolution No. OCSD 20-XX entitled , "A
Resolution of the Board of Directors of the Orange
County Sanitation District, making findings pursuant to
Public Contracts Code Section 3400 in support of the
sole source specification of Huber Technology for grit
washing and dewatering systems for Headworks
Rehabilitation at Plant No. 1 , Project No. P1 -105".
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