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Pre-Bid Meeting Presentation - Rivanna Water and Sewer Authority

RIVANNA WATER & SEWER AUTHORITY

Nutrient Removal Improvements

Moores Creek Wastewater Treatment Plant

Rivanna Water and Sewer Authority

SERVING CHARLOTTESVILLE

AND ALBEMARLE COUNTY, VIRGINIA

PRE-BID CONFERENCE

March 10, 2009

RWSA Contractors Breakfast­Nov08­31037.ppt


Moores Creek WWTP – Introductions

Rivanna Water and Sewer Authority

Tom Frederick – Executive Director

Bob Wichser – Director of Water & Wastewater Operations

Jennifer Whitaker – Chief Engineer

Cary Lang – Wastewater Department Manager

Hazen and Sawyer

Ron Taylor – Project Manager

Carol McDowell – Resident Project Representative

Chris Szoch – Assistant Resident Project Representative

RWSA Contractors Breakfast­Nov08­31037.ppt


Moores Creek WWTP – Project Overview

Current capacity is 15 mgd

Permitted capacity expansion not in this scope

Chesapeake Bay Nutrient Reductions

TN – 5 mg/L

TP – 0.3 mg/L

Upgrade and replacement of aging infrastructure

Peak flow capacity improvements

Current peak capacity = 18 mgd

Proposed peak capacity = 37.5 mgd

RWSA Contractors Breakfast­Nov08­31037.ppt


Moores Creek WWTP – Bidding Information

Bid Date: March 31, 2009 at 2:00 pm

Bid Location: Administration Building at Moores Creek

Wastewater Treatment Plant, 695 Moores Creek Lane,

Charlottesville, VA 22902

Construction Period: 42 months

Engineer’s Estimate of Construction Cost:

$40 to $50 million

Tentative Notice to Proceed: May 2009

RWSA Contractors Breakfast­Nov08­31037.ppt


Moores Creek WWTP – Bidding Information

(Continued)

Any changes to the contract documents will be by

addendum only.

Additional questions should be faxed to Hazen and

Sawyer at (919) 833­1828 to Todd Johnson’s attention

or by email to tjohnson@hazenandsawyer.com.

Questions will be answered up to 7 days (March 24 th )

prior to the bid. If warranted the question or comment

will be addressed in future addendums.

Plan Holder listing is available by contacting John

Williams or Marcus Lanier at H&S (919­833­7152)


Moores Creek WWTP – Bidding Information

(Continued)

Project is partially funded by SRF Loan and WQIF Grant

Bidders must submit Virginia State Revolving Loan

Fund (SRF) completed forms with the Bid – See

Specifications section 00420

MBE / WBE goals are identified in the documents

Bidders must demonstrate compliance with MBE/WBE

requirements to be deemed responsible.


Moores Creek WWTP – Existing Site

RWSA Contractors Breakfast­Nov08­31037.ppt


Proposed Plant Improvements

RWSA Contractors Breakfast­Nov08­31037.ppt


Moores Creek WWTP – Septage Receiving

Station

RWSA Contractors Breakfast­Nov08­31037.ppt


Moores Creek WWTP – Odor Control

RWSA Contractors Breakfast­Nov08­31037.ppt


Moores Creek WWTP – Equalization Basins

RWSA Contractors Breakfast­Nov08­31037.ppt


Moores Creek WWTP –

Aeration Building

RWSA Contractors Breakfast­Nov08­31037.ppt


Aeration Basin Modifications

Must have 4 aeration basins in service in Winter

Can meet current permit with three basins in other

seasons

Once aeration basin No.5 is operational, two of the

four existing basins can be removed from service at a

time

Please review Specification section 01520 –

Maintenance of Plant Operations During Construction

RWSA Contractors Breakfast­Nov08­31037.ppt


Moores Creek WWTP – Blower Building

RWSA Contractors Breakfast­Nov08­31037.ppt


Moores Creek WWTP – Secondary

Clarifiers 1 and 2

RWSA Contractors Breakfast­Nov08­31037.ppt


Moores Creek WWTP – Secondary Clarifier 3

RWSA Contractors Breakfast­Nov08­31037.ppt


Timing of Secondary Clarifier No.3

Construction

Tertiary Settling Basin must remain in service

until new filters and UV disinfection are

operational

Temporary direct discharge of effluent to creek

to allow tie­in of filters

Demolish Tertiary Settling

Basin and construct

Secondary Clarifier No.3

RWSA Contractors Breakfast­Nov08­31037.ppt


Moores Creek WWTP – Sludge Pumping

Station

RWSA Contractors Breakfast­Nov08­31037.ppt


Moores Creek WWTP – Tertiary Filters

RWSA Contractors Breakfast­Nov08­31037.ppt


Bid Alternate for Filters

Plans call for construction of eight filter cells

RWSA is receiving breakout bid pricing for

construction of only six filters and for the

incremental cost of filters 7 & 8

Determination of number of filters will be based on

pricing and negotiations with DEQ

RWSA Contractors Breakfast­Nov08­31037.ppt


Moores Creek WWTP – UV Disinfection

Facilities

RWSA Contractors Breakfast­Nov08­31037.ppt


RWSA has Pre­Selected UV Equipment

Considered three manufacturers

Received two equipment bids

Selected Trojan UV 3000 Plus

Equipment proposal and pricing

included in GC bid documents

RWSA Contractors Breakfast­Nov08­31037.ppt


Solids Stabilization and Gas Handling

Improvements

New Gas Holder Cover

Hot Water and Digester Gas Piping

Digester Building Roof Replacement

Boiler Building

Combined Heat and Power Generation System

RWSA Contractors Breakfast­Nov08­31037.ppt


Moores Creek WWTP – Digester Gas Holder

Cover

RWSA Contractors Breakfast­Nov08­31037.ppt


Moores Creek WWTP – HW & DG Piping and

Roof Replacement

RWSA Contractors Breakfast­Nov08­31037.ppt


Moores Creek WWTP – Boiler Building

RWSA Contractors Breakfast­Nov08­31037.ppt


Solids Handling Building Improvements

New Centrifuge

Sludge pumping improvements

Chemical systems

Architectural improvements

RWSA Contractors Breakfast­Nov08­31037.ppt


Moores Creek WWTP –

Solids Handling Building

RWSA Contractors Breakfast­Nov08­31037.ppt


Moores Creek WWTP –

Bulk Chemical Storage Facility

RWSA Contractors Breakfast­Nov08­31037.ppt


Project Phasing

Overall Contract Time = 42 months

Phase 1 Milestone

Septage Receiving and Odor Control

12 months from NTP

Phase 2 Milestone

Tertiary Filter Facilities

UV Disinfection Facilities

Chemical storage and feed systems

22 months from NTP

Tertiary Settling Basin Demo after Phase 2 complete

RWSA Contractors Breakfast­Nov08­31037.ppt


Questions

RWSA Contractors Breakfast­Nov08­31037.ppt

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