Attachment K - NSGL Clearwell Slide Presentation Final.pdf

NAVFAC Mid-Atlantic, PWD Great Lakes

Naval Station Great Lakes (NSGL) Water Treatment Plant Clearwell Repair/Replacement

Project Overview

For references purposes only

Site Map

You are Here

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Site Orientation – Facing West

Bldg 11 Bldg 12A

Bldg 12

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Pump Room

Bldg 45N

Bldg to be Demolished by Navy

NSGL Water System

Naval Facilities Engineering Systems Command (NAVFAC) operates and maintains the Navy owned surface water treatment plant, and the distribution and storage system serving Naval Station Great Lakes (NSGL) in North Chicago, IL.

• The Navy Public Water System (PWS):

–encompasses an area of approximately 1750 acres –serves approximately 21,250 people with 1,139 service connections –is permitted by the Illinois Environmental Protection Agency with Facility Number: IL097-5227 and Facility Name: GREAT LAKES NAVAL TRAINING STATION –produces 100% of the potable water for the entire Naval Station, including the Lovell Federal

Health Care Center (Veteran’s Affairs Hospital), Navy Housing and critical customers such as Recruit Training Command

–Operates 24/7 and continuously produces water

• The conventional treatment plant includes the following processes: chemical addition, sedimentation, rapid sand filtration, and disinfection with chlorine.

• The distribution system contains 3 ground storage tanks and 2 elevated tanks.

• The average daily demand is approximately 2 MGD and maximum day is approximately 4 MGD.

Existing Water One Line

NSGL Surface Water Treatment Plant

• The original NSGL Water Treatment Plant (Building 12) was built in the early 1900s.

Over its history, there were several additions to the initial Water Treatment Plant expanding the overall size of the Plant and changing its location slightly.

–Clearwells 1-3 are part of this original 1900s construction.

–The pump room is also original to the 1900s although the pumps and piping have been replaced.

–The current filter plant (Building 12A) was built in 1942 and contains flocculation basins, settling basins, filters 1-4 and Clearwell 4.

–Filters 5-8, Clearwell 5 and the Accelator® reactor clarifiers were constructed with a plant expansion in 1944.

• This 1944 expansion brought the plant design capacity up to 9 MGD, and resulted in the overall plant configuration as is found presently (2023). No significant additions or expansions are known to have occurred since 1944.

Existing Clearwells

Clearwell 1 Clearwell 2

Clearwell 3

Clearwell 4 (Below Filters)

Clearwell 5 (Below Filters) Bldg 12

Bldg 12A

Existing Site Plan

Clearwell 1 Clearwell 2

Clearwell 3

Clearwell 4 (Below Filters) Clearwell 5 (Below Filters)

Pump Room

Bldg 11

Bldg 12

Bldg 12A

Bldg 45N

Scope Highlights (1 of 2)

These slides do not identify the full scope required for construction, only major New Activities. It is up to the bidding contractors to ensure full understanding of the project scope.

•Two Clearwell Tanks –410,000 gallons each –Finished water storage –Wire- or Strand-wound Pre-stressed Concrete

•Transfer Pump Station Building –3,500 square feet –500 square foot vestibule (Connecting to Building 12A) –4 transfer pump units –2 backwash pump units –Weir chamber and potable water wet well

• Internal Building Piping –Filter Effluent (Clearwells 4 and 5) –Backwash (Bld 12A) –Clearwell Effluent (Clearwell 1 & Bld 12)

Scope Highlights (2 of 2)

These slides do not identify the full scope required for construction, only major New Activities. It is up to the bidding contractors to ensure full understanding of the project scope.

•Demolition and Hazardous Material Abatement

•Process Yard Piping and Valves

•Relocation/replacement of existing buried utility lines –Electrical, Sanitary, Storm & Water

•SCADA Integration –Automatic pump/system control –Remote monitoring and manual control

•Site work (grading, paving, fencing, and site restoration)

• (Bid Option) Concrete Repairs –Clearwells 4 and 5

New Construction – Final Site Plan

Yard Piping

Transfer Station

Clearwells

This slide does not identify the full scope required for construction, only major New Activities. It is up to the bidding contractors to ensure full understanding of the project scope.

Bldg 11

Bldg 12

Bldg 12A

Final Rendering

Critical Scope Elements

• Project Phasing

– New Construction

– Temporary Construction

– Utility Cut-Over/Transition

– Demolition

• Active Industrial Work Area

– 24/7 Operations

– Plant Criticality to Base Mission –Sustain Delivery Access

– Maintain Access to Shared- Enclosed workspace

– Shutdowns limited

• Environmental

– Fed/State/Local EV Req’ts

– SWPP

– Permitting

– HAZMAT

• Site Information

– Soil is built-up landfill

– Known substructure obstructions

– Buried Key Utilities

This slide does not identify the full scope required for construction, only major New Activities. It is up to the bidding contractors to ensure full understanding of the project scope.

Critical Phasing Elements

• New Construction

– Parking Improvements –Transfer Station

– New Clearwells Tanks

– Yard Piping

• Reconfiguration / Temporary Construction

– Existing Clearwell 4 & 5 Demo

– Permanent and Temporary Piping

•Utility Cut-Over/Transition

– Testing

– Commissioning

• Demolition

– Removal of existing infrastructure

– Facility Remediation

This slide does not identify the full scope required for construction, only major New Activities. It is up to the bidding contractors to ensure full understanding of the project scope.

Drawing List

Phasing Plans

Yard Piping

Transfer Station

Clearwells

This slide does not identify the full scope required for construction, only major New Activities. It is up to the bidding contractors to ensure full understanding of the project scope.

Existing Water Treatment P&ID

Clearwell 1 Clearwell 2

Clearwell 3

Clearwell 4 (Below Filters)

Clearwell 5 (Below Filters)

New Water Treatment Plant P&ID

Yard Piping

Transfer Station

Clearwells

This slide does not identify the full scope required for construction, only major New Activities. It is up to the bidding contractors to ensure full understanding of the project scope.

B12A Filter Room

B12A Pipe Galley

B12 Pump Room High Lift Pumps