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 


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 


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 



(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)


(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 


Proposed Plant Improvements 


Moores Creek WWTP – Septage Receiving 

Station 


Moores Creek WWTP – Odor Control 


Moores Creek WWTP – Equalization Basins 


Moores Creek WWTP – 

Aeration Building 


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 


Moores Creek WWTP – Blower Building 


Moores Creek WWTP – Secondary 

Clarifiers 1 and 2 


Moores Creek WWTP – Secondary Clarifier 3 


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 


Moores Creek WWTP – Sludge Pumping 

Station 


Moores Creek WWTP – Tertiary Filters 


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 


Moores Creek WWTP – UV Disinfection 

Facilities 


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 


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 


Moores Creek WWTP – Digester Gas Holder 

Cover 


Moores Creek WWTP – HW & DG Piping and 

Roof Replacement 


Moores Creek WWTP – Boiler Building 


Solids Handling Building Improvements 

New Centrifuge 

Sludge pumping improvements 

Chemical systems 

Architectural improvements 



Solids Handling Building 



Bulk Chemical Storage Facility 


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 


Questions

AUTHORITY

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