Slides presented during Public Hearing_112823
Notice Date unknown · 13 page(s) in the original
This is the document's text, extracted automatically. Headings and paragraphs are inferred from the original's layout, so the arrangement may differ from the published version — the words do not. Where it matters legally, the original governs.
TOWN OF CENTREVILLE
WASTEWATER
TREATMENT PLANT
COMPREHENSIVE WATER AND SEWER PLAN
UPGRADE DISCUSSION
NOVEMBER 28, 2023
Upgrade Approach
A
Plan for phased build-out that considers engineering comprehensive and growth
B
planning dependencies.
Fiscal:
Finalize funding streams from Federal and State budget negotiations.
Alignment for phased funds over 2 or Engineering:
more state and/or federal budgets.
Move towards enhanced nutrient Source grant funding where removal treatment/filtering and applicable.
discharge technologies General Project Milestones Farm Purchase/Steam Planning Discharge and Design Invitations to Bid Construction Funding b d f h j a c e g i QAC Comp Water and Sewer MDE Contingent Draft RFP ROM 4-years Plan/Centreville Comp Plan Approvals Award to upgrade Partnerships and Alignment
COUNTY GROWTH PLANS CENTREVILLE ALIGNMENT
▪ 304/301 Interchange ▪ Upgrade WWTP to meet
both Town and County
▪ Infill Development
Growth and Comprehensive
▪ Business Park Development
Plans
▪ Mixed Commercial Use
▪ Denial of service line
▪ Department of Health -
extension.
failing septic system
▪ Sanitary Enclave
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)
Grants a. BRF - ~$14.9M (In Current Budget) b. COS - ~$2.15M c. ARPA - ~$2.5 - $3.3M (Spray Field) d. Rural Dev. - $500,000 (Commerce) Loans a. Loan $14.9M (possibly offset with an annual $5M state grant disbursed every year for the next 3 years) Revenue Streams Total Cost a. $38,278,008 WWTP Upgrade and Expansion
1. Average flows have exceeded 80% of permit capacity
• Some years exceeded 90%
2. Treatment performance challenging during high flows
3. Solids handling and disposal operations need to be upgraded
Current Configuration Water Treatment Well Aquifer Plant Households/ Businesses BNR Stream Wastewater Discharge Plant (Dec - Mar)
(0.542 MGD)
Spray Holding Field Pond (Apr - Nov) Upgrade and Expansion Plan Drinking Water Well Aquifer Treatment Plant Households/ Businesses Extended Stream
ENR - MBR
Discharge Wastewater
(0.458 – 1 MGD)
Plant (1 MGD) Increase (Year Round) Capacity & Modernize Existing Existing Spray Holding Field (0.542 MGD) Pond (Apr–Nov) Proposed WWTP Upgrade and Expansion
1. Liquid Treatment
a) Screening and Grit Removal
b) Flow Equalization
c) Activated Sludge MBR Process (ENR)
d) UV Disinfection
e) Effluent Pumping
2. Solids Treatment
a) Sludge Stabilization (Class B)
b) Dewatering/Storage
c) Land Application
Existing Stream Discharge Existing Stream Discharge
WWTP
Proposed Extended Stream Discharge Extended Stream Discharge Outfall Area