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Item3.b.
(Handout)
M ECHANICALAND C ONCRETE
R ENOVATIONS, D ISTRICT P ROJECT 7351
Engineering and Operations Committee
November 5, 2018
Nancy Molina
Capital Projects Associate Engineer
Edgar J. Lopez
Capital Projects Division Manager
P ROJECT O VERVIEW
Θ The Project focuses on the rehabilitation and replacement
of concrete structures and mechanical equipment
associated with preliminary and primary treatment
process areas.
Θ General Summary of Scope of Work:
Θ Structure rehabilitation by concrete and epoxy
coatings;
Θ Replacement of flight rails and supports on the PSTs;
Θ Gate and piping replacement;
Θ Odor control tower rehabilitation;
Θ Grout injection to eliminate leaks;
Θ Safety improvements related to the structures and
equipment replacement; and
Θ Concord Main Metering Station upgrades.
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L OCATIONOF P ROJECT E LEMENTS E VALUATED
ATTHE T REATMENT P LANT
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L OCATIONOF C ONCORD M ETER S TATION
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E NGINEER’S E STIMATE
B ASEAND A DDITIVE B ID I TEMS
Θ Base Bid$ 9,520,000
Θ Additive Bid Items
Θ 1 -Concord Meter Station $ 850,000
Θ 2 -Other Structures$ 1,100,000
Total: $11,470,000
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B ID R ESULTS
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C. O VERAA& C OMPANY B ID
B ASEAND A DDITIVE B ID I TEMS
Θ Base Bid$ 8,741,000
Θ Additive Bid Items:
Θ 1 -Concord Meter Station $ 404,000
Θ 2 -Other Structures$ 919,000
Total Contract Amount: $10,064,000
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T OTAL E STIMATED P ROJECT B UDGET
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F INANCIAL I MPACT
*Includes past budgets
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P ROJECT E LEMENTSFOR
THE O DOR C ONTROL P ROJECT
Θ Needed spring of 2019 prior to summer
months
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O UTFALL P H. 7 I MPROVEMENTS U PDATE
Θ Project is needed for regulatory compliance.
Θ Proceeding with both permits and design.
Θ Construction of some of the structures under this
Project.
Θ Can not be constructed in FY 2019-2020 due to:
Θ Influent structure gate replacements and repairs.
Θ Primary Sedimentation Tank repairs and
effluent channel work.
Construction scheduled for FY 2020-21. Budget
will be revised and no impacts to overall CIP
budget anticipated.
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P ROJECT E LEMENTS I MPACTING
O UTFALL P H. 7 I MPROVEMENTS P ROJECT
Θ Needed prior to Outfall for Operations
coordination
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E LEMENTS I NCLUDEDFORTHIS
T WO Y EAR C ONSTRUCTION P ROJECT
Θ Not including Grit System –Future Project
Θ Structure D has to be completed during Outfall Ph. 7 Project
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B OARD A CTIONSAND S TAFF
R ECOMMENDATIONS
Staff recommends the following:
1.Find that the Project is exempt from CEQA;
2.Award a construction contract in the amount of $10,064,000 for the
construction of the Mechanical and Concrete Renovation, DP 7351,
to C. Overaa & Company, the lowest responsive bidder;
3.Authorize the General Manager to execute Contract Documents
subject to submittal requirements and include up to a ten-percent
contract contingency;
4.Authorize the General Manager to amend an existing professional
services agreement to increase the cost ceiling by $725,000 with
Carollo for construction support services; and
5.Authorize the General Manager to consolidate and transfer the
project budgets to fund the construction of the project.
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Q UESTIONS?
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