Presented during April 2024 Council meeting

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TOWN OF CENTREVILLE

WASTEWATER

TREATMENT PLANT

UPGRADE AND EXPANSION STATUS

APRIL 4, 2024

Topics

• Background

• Work Completed

• Current Focus Areas

• Next Steps

• Schedule

• Funding

Background

• Upgrade Treatment

• Enhanced Nutrient Removal

• Membrane Bioreactor

• Expand from 0.542 to 1.0 MGD

• Alternatives for Treated

Effluent Disposal Work Completed

• WWTP Upgrade has been approved and adopted into the

County’s Comprehensive Water and Sewer Plan (Expansion is pending discharge)

• Met with MDE to discuss year-round stream discharge

• Met with Interest Groups to discuss the option for Corsica River

discharge

• Submitted Draft WWTP Preliminary Engineering Report to MDE

Focus Areas

• Received comments from MDE, finalize PER

• Develop Effluent Disposal Option as Parallel Task to

WWTP Project

• Continue Public Outreach

Next Steps

• Moving forward with Geotechnical Investigation

• Stream Discharge

• Mixing Study

• Investigate Construction Costs and Methods

• Spray Irrigation

• Continue to explore the availability and viability of a field

• PER final approval for the Final Design of the WWTP Project

Schedule Finalize Final Construction PER Design Permitting Bidding Construction Concludes Concludes June June December March December 2024 2025 2025 2026 2029 Develop Effluent Disposal Option Grants a. BRF - ~$14.9M (In Current Budget) b. CDS - ~$2.15M c. ARPA - ~$2M d. Rural Dev. - $500,000 (Commerce) Loans a. TBD based on grant funding Total Cost Revenue Streams a. $38,278,008

DISCUSSION

THANK YOU!

WWW.TOWNOFCENTREVILLE.ORG

Variables

• Planning and Design

• Shift to modern filtering technologies (Membrane)

• Upgraded software

• Size/Capacity

• Allocation Fees for future improvements or expansion

• Support Town and County growth and planning efforts

• Discharge Options

• Spray Field and access infrastructure

• $12M+ for the field

• $1M per mile to reach the field (total miles/total cost)

• Direct Enhanced Stream Discharge (most viable and cost-effective)

• Extend past Watson Rd Bridge (cost)