Wastewater Treatment Plant Preliminary Engineering Contract - - PowerPoint PPT Presentation

Wastewater Treatment Plant Preliminary Engineering

Contract Amendment No. 6

Purpose

 The purpose of this agenda bill is to seek City Council’s

approval of Amendment Number 6 to the Consultant Agreement with Carollo Engineers for preliminary design

• f the new Wastewater Treatment Plant in the

Windjammer Vicinity.

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Project Need

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 Existing treatment facilities are outdated and nearing

capacity.

 Increasingly stringent water quality standards  Both outfalls have major problems  Marsh surrounding lagoons reclaimed in 2009  Requirement of National Pollution Discharge Elimination

System (NPDES) permit

Project Goals

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 Provide reliable wastewater treatment  Meet high water quality standards  Phasing opportunities  Deliver a plan that keeps on track to start the new

treatment plant by the end of 2017

Objective of Preliminary Design

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 Complete

Value Engineering

 Finalize Location of WWTP within the Windjammer

Vicinity

 Procure Major Process Equipment

 Membranes  UV disinfection

 30 % Design  Delivery Method

 Design / Bid / Build  Design Build  General Contractor / Construction Manager (GC/CM)

Project Team

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Subconsultant Role ESA Environmental / Cultural Enviroissues Public Meeting Support Michael Willis Architects Architectural GeoEngineers Geotechnical Design Bruce Dees & Assoc Landscape Design Webster Environmental Odor Control Cosmopolitan Engineering Outfall Design Harmsen Associates Survey

City Contract Responsibility

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 City Retains Control Over the Following Contracts

 Value Engineering Facilitator and T

eam

 Property Acquisition Expert  Cultural Resource Investigator  Parks / Open Space Planner  Transportation Planner  Commercial Real Estate Advisor  Charrette Facilitator  GC/CM Advisor

Scope of Services

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 Task 100 – Project Management

 Management Plan  Monitoring and Reporting  Management Meetings

 Task 200 –Value Engineering (VE) Support

 Conceptual level design  Participation in

VE workshop

 Recommendations

Scope of Services

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 Task 300 – Public Process Support

 Participation in charrettes  Workshops  Working groups  City Council

 Task 400 – WWTP Preliminary Design

 Major equipment procurement

 Membranes  UV Disinfection

 30% design documents

Scope of Services

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 Task 500 – Project Delivery Analysis

 Provide comparison of delivery methods

 Task 600 – Outfall Design

 100% design of new outfall  Permitting

 Task 700 – Management Reserve

 Allows City Engineer to make minor adjustments as needed  5% of contract amount

Summary by Task

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Task Cost Task 100 – Project Management $69,978 Task 200 –Value Engineering Support $289,417 Task 300 – Public Process Support $198,610 Task 400 – WWTP Preliminary Design $964,416 Task 500 – Project Delivery Analysis $14,498 Task 600 – Outfall Design $262,363 Carollo Fee $159,152 Subconsultant Markup $23,650 Subtotal $1,982,065 Task 700 – Management Reserve (5%) $99,103 T

• tal

$2,081,168

Summary by Activity

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Task Cost “Traditional” Preliminary Design $1,511,644 Additional Services

• Value Engineering

$60,698

• Public Process

$130,037

• Outfall Design and Permitting

$279,686 Subtotal $470,421 Management Reserve $99,103 T

• tal

$2,081,168

Project Schedule

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Project Schedule

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Preliminary Design Facilities Plan Final Design Construction Start up

Project Schedule

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Verification of Scope and Cost

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 Industry Guidelines

 Water Environment Federation (WEF)  WA Office of Financial Management  2012 CA Multi-Agency CIP Benchmarking Study

 Similar Projects

 Other MBR treatment plants in our region

 Other City Projects

 Gun Club Road  North Reservoir  SE Pioneer Way

Verification of Scope and Cost

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 Studies Typically Address Total Cost  Preliminary Design = $2,081,168  Final Design = TBD  Total = 10% of Total Construction Cost

Total Design Cost

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 California Multi-Agency Benchmarking Study – 2012

 San Francisco  Sacramento  Oakland  San Jose  Los Angeles  Long Beach  San Diego

Studies

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Total Design Cost

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 Similar Projects

10.7% 10.9% 16.2% 6.6% 10.7% 8.0% 10%

0.0% 2.0% 4.0% 6.0% 8.0% 10.0% 12.0% 14.0% 16.0% 18.0% 20 40 60 80 100 120 140 160 180

% of Total Construction Cost (TCC) Millions of Gallons per Day (GPD)

Gallons per Day vs. % of Total Construction Cost (TCC)

Shelton Blaine King County Bellingham Everett Salem Oak Harbor

Summary of Design Costs

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 Preliminary Design = $2,081,168  Total Costs

 Estimated T

• tal Construction Cost = $60 to $67 million

 Design Cost = ±10% of T

• tal Construction Cost

 Design Cost = $6 to $6.7 million

 Final Design Contract = $4 to $4.7 million

 Approximately 1 year from now

Summary

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 Tasks include “Traditional” and supplemental services  Does not include contracts where it is in the City’s best

interest

 Design cost is included in “$93.5 million” Design Effort Cost Timing Preliminary Design $2,081,168 Today Final Design $4 to $4.7 million 1Year Total $6 to $6.7 million

Funding

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 Water Fund  Included in current rate structure

Requested Action

 A motion to authorize the Mayor to sign Consultant

Agreement Amendment Number 6 with Carollo Engineers in the amount of $2,081,168 for preliminary design related to a new wastewater treatment plant.

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