Fourth Incinerator Preliminary Design

Black and Veatch was selected as the Owner's Agent in 2019 to assist in preliminary design activities and to be MCES's representative throughout the
design build construction. Preliminary design activities include documenting existing systems, evaluating alternatives, completing
technical specifications, and developing the design build request for proposal. The design build request for proposal is expected to be issued in 2021.
Schedules Timeline Design 2019 to 2021
2019                                                                FOURTH INCINERATOR PERMITTING AND DESIGN                                                                 2021

Select Owner’s
Agent

Document Existing
Systems

Evaluate Alternatives
 

Complete Technical Specifications

Issue Design Build Request for Proposal

FOURTH INCINERATOR PROJECT SCOPE

The fourth incinerator will require a small addition to an existing building and will be constructed entirely within the Metro Plant property boundary. The fourth incinerator will include a new fluid bed incinerator with supporting energy recovery and air pollution control equipment.  See the graphic below to see how the building will be expanded and what the fourth incinerator will look like.

Sludge Storage Pumping Improvements

New building addition cutaway

The estimated cost of the fourth incinerator is $150 million with construction starting in 2021

The fourth incinerator train will include the components below
Sludge Feed
Sludge Feed
Dewatering
Dewatering
Fourth Incinerator
Fourth Incinerator
Energy Recovery
Energy Recovery
Air Pollution Control
Air Pollution Control
Ash Conveyance
Ash Conveyance
Cake Receiving
Cake Receiving
Effluent Water
Effluent Water
Building Systems
Building Systems

FOURTH INCINERATOR AIR PERMITTING & ENVIRONMENTAL REVIEW

The existing Metro Plant air permit will be amended and an environmental review of the fourth incinerator project will be performed concurrently during preliminary design. The revised air permit for the fourth incinerator is required before issuing the notice to proceed to the design builder to start construction.

 

Air Permitting Process

Adding a fourth incinerator will require a major amendment to the existing Air Permit for the Metro Plant which is administered through the Minnesota Pollution Control Agency (MPCA) (Air Permit 12300053-006). Air permitting process Adding a fourth incinerator will require a major amendment to the existing Air Permit for the Metro Plant which is administered through the Minnesota Pollution Control Agency (MPCA) Air Permit 12300053-006).


Voluntary Environmental Assessment Process

The Council will also be submitting a voluntary environmental assessment worksheet (EAW) including a risk analysis screening spreadsheet (RASS) and going through an independent environmental review Voluntary environmental Assessment process The Council will also be submitting a voluntary environmental assessment worksheet (EAW) including a risk analysis screening spreadsheet (RASS) and going through an independent environmental review

Prepare Modeling Protocal/ RASS
MCES
Review & Approve Modeling Protocol / RASS
MCPA
Complete Air Permit Amendment & EAW
MCES
Review Air Permit Amendment &
EAW
MCPA

Public Notice for Air Permit Amendment & EAW 
MCPA
Issue Air Permit / Negative Declaration / Finding of Facts
MCPA