HomeMy WebLinkAbout13 Martiswoods Design Contract
AGENDA ITEM 13
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MEETING DATE: December 2, 2020
TO: Board of Directors
FROM: Neil Kaufman, Water Systems Engineer
SUBJECT: Consideration for Award of a Contract to Design the Martiswoods
Hydropneumatic Pump Station
APPROVED BY________________________________
Brian Wright, Interim General Manager/
Water Utility Director
RECOMMENDATION:
Award a contract to Farr West Engineering to perform design of the Martiswoods
Hydropneumatic Pump Station project in an amount not to exceed $135,700.
BACKGROUND:
The Martiswoods Pump Station and Tank site is located at 11725 Rocky Ridge Court in the
Martiswoods subdivision. The site location is noted on Figure 1 (Attachment 1). There is
currently one ground level storage tank, one elevated storage tank and one pump station at
the site. The existing pump station consists of two pumps (one duty, one standby) that
take water from the ground level tank and pump it to the elevated tank. Pump operations
are determined by level control in the elevated tank. The pressure zone served by the
elevated tank contains 45 single family homes, with an additional three homes expected at
buildout conditions.
The elevated tank was constructed in 1982. Recent structural evaluation of the tank has
determined that significant effort would be required to perform repairs and coating
replacements on the tank as well as upgrades to the tank to meet current seismic codes.
An economic evaluation performed by the District determined that it would be more cost
effective to replace the elevated tank with a ground level hydropneumatic pump station.
The existing elevated tank and pump station will be demolished once the new
hydropneumatic pump station is completed and placed into service. A conceptual site plan
of the project is shown in Figure 2 (Attachment 2).
Historically, the District has utilized a combination of contractors and internal staff to
construct new pump stations and well facilities. Based upon further evaluation of the
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current facility needs, design requirements and available internal resources, staff has
determined it to be most beneficial for the District to contract out the construction project.
A more thorough and complete set of bid documents will be needed for the public bidding
process and the use of an outside consultant is needed for this design work. It is
anticipated that the primary design components will be further utilized as a baseline
template for future pump station projects outlined within the District’s Capital Improvement
Plan.
In October 2020, the Water Department issued a Request for Proposals (RFP) to secure a
consultant for project design.
Four proposals were received in response to the RFP:
Domenichelli And Associates (D&A) – El Dorado Hills, CA
Farr West Engineering – Reno, NV
Lumos And Associates – Carson City, NV
Sauers Engineering – Nevada City, CA
A staff review committee was selected and the proposals were evaluated based on the
following criteria:
Proposed scope of work and project methodology (30%)
Experience of the firm with similar pump station design projects (15%)
Experience of project team with similar pump station design projects (20%)
The firm’s procedures, methodology and quality assurance/quality control (5%)
References (10%)
Cost (20%)
After completion of the technical review, the proposals from D&A and Farr West were
scored to be favorable to the other two. The technical scoring had Farr West rated slightly
higher, however either proposal would meet the District’s technical requirements.
Firm Rank
Farr West Engineering 1
Domenichelli and Associates 2
Sauers Engineering 3
Lumos & Associates 4
Technical Scoring
Following review of technical proposals, cost proposals were then reviewed. The overall
cost proposal from the four firms ranged from approximately $119,000 to approximately
$142,000. The total cost differential between the two favored cost proposals were minor.
A more detailed review of the cost proposals noted that Farr West has significantly more
effort listed in the design phase of the project with Domenichelli and Associates indicating
significantly more effort in the construction phase. The scope of work described in the RFP
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did not include daily on-site construction inspection and the review committee determined
that the District would be better served with the additional effort in the design phase. It is
currently anticipated that construction inspection will be performed under a separate
contract by a third-party inspector.
Firm Rank
Farr West Engineering 1
Domenichelli and Associates 2
Lumos and Associates 3
Sauers Engineering 4
Cost Proposal Scoring
Finally, an aggregated ranking (technical capability & cost) of the proposers was
developed:
Firm Rank
Farr West Engineering 1
Domenichelli and Associates 2
Lumos & Associates 3
Sauers Engineering 4
Overall Proposal Scoring
Therefore, staff is recommended that the District award a contract for the design of the
Martiswoods Hydropneumatic Pump Station to Farr West Engineering.
The planned project schedule is given below.
December 2, 2020 Award Design Contract to Consultant
December 2020 Preliminary Meetings with Water Department Staff to Review
Project Design Parameters
January 2021 Complete 60% Design
February 2021 Complete 95% Design
March, 2021 Begin Advertising for Construction Bids
April, 2021 Bid Opening
April, 2021 Award Construction Contract
May 2021 Begin Construction
Late Fall 2021 Pump Station Operational and In Service
Summer 2022 Demolition of Existing Pump Station and Elevated Tank.
Completion of Project
The Water Department currently anticipates the project will be declared categorically
exempt under CEQA. Staff has been in contact with the adjoining property owners and
with Placer County to inform them of this upcoming project. The District will engage in
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additional public outreach within the subdivision once more details have been finalized.
FISCAL IMPACT:
The cost proposal from Farr West Engineering was $123,403. It is recommended that a
ten percent change order allowance be established for a total authorized not to exceed
amount of $135,700.
The Martiswoods Pump Station Replacement Project was included in the Board approved
FY21 Water Capital Budget.
ATTACHMENTS:
Attachment #1-Vicinity Map
Attachment #2-Conceptual Site Plan
3,500.00
Truckee Donner Public Utility District
7,000.07,000.0 0 Feet
For internal use only. This map is a user generated static output from an Internet mapping site and is for reference only. Data layers that appear on this map may or may not be accurate, current, or otherwise reliable.11/10/2020
SCALE1" = 50 FEETON 11" X 17" PAPERTDPUD PROPERTYPRIVATE PROPERTYPRIVATE PROPERTYUS FOREST SERVICEPROPERTYEXISTELEVATED TANKTO BE REMOVEDNEW PUMP STATIONEXISTPUMP STATIONTO BE REMOVEDEXIST GROUND LEVELTANK TO REMAINPRIVATE PROPERTYPRIVATE PROPERTYPRIVATE PROPERTYPRIVATE PROPERTYFIGURE 2MARTISWOODS PUMP STATIONCONCEPTUAL SITE PLAN