Lunenburg CWMP Phase II – Management Techniques and Alternatives Identification and Screening...
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Transcript of Lunenburg CWMP Phase II – Management Techniques and Alternatives Identification and Screening...
Lunenburg CWMP
Phase II – Management Techniques and Alternatives
Identification and Screening
Lunenburg ComprehensiveWastewater Management Plan
Workshop – August 27, 2007Workshop – August 27, 2007
Lunenburg CWMP2
• Project Management/Public Involvement
• Phase I - Existing Conditions (filed May 2007)
• Phase II - Alternatives Identification and Screening
• Phase III - Detailed Evaluation of Alternatives and Recommended Plan
• Phase IV – Report
CWMPCWMP Phases Phases
Lunenburg CWMP3
Phase I CWMP SummaryPhase I CWMP Summary
•Existing conditions
•Water demand/supply sources
Lunenburg Water District
•Water balance 3 local sub basins of
the Nashua River
•Wastewater needs assessment
11 Areas of Further Study
Lunenburg CWMP4
• Project Management/Public Involvement
• Phase I - Existing Conditions
• Phase II - Alternatives Identification and Screening
• Phase III - Detailed Evaluation of Alternatives and Recommended Plan
• Phase IV - Report
CWMP PhasesCWMP Phases
Lunenburg CWMP5
Phase II - Alternatives Identification and ScreeningPhase II - Alternatives Identification and Screening
• Proposed Alternatives
Collection Treatment Effluent Disposal
• Review Criteria
Technical Environmental Institutional Economic
Lunenburg CWMP6
• Review wastewater management alternatives
• Identify and short list potential wastewater treatment and effluent disposal sites
• Provide short list of treatment, collection and effluent disposal alternatives
Phase II CWMPPhase II CWMP
Lunenburg CWMP7
Draft Phase II reportDraft Phase II report
• Section 1 – Introduction
• Section 2 - WW Management AlternativesReviewed as Tech Memo #1
• Section 3 - Potential Treatment/Disposal Site LocationsReviewed as Tech Memo #2
• Section 4 - Short Listed Alternatives
• Section 5 – Assessment of Management Techniques
• Section 6 - Public Participation
Lunenburg CWMP8
Technical Memorandum #2Technical Memorandum #2
• Potential wastewater treatment and effluent disposal sites To be used if a decentralized treatment process is
part of the recommended plan
• Townwide search identified 23 potential sites
• Performed preliminary hydrogeological evaluation Soils, depth to bedrock, and effluent disposal rates
• Short listed 9 sites by sub basin Based on 11 technical and environmental factors
Lunenburg CWMP9
Questions and CommentsQuestions and Comments
Lunenburg CWMP10
• Individual on-site systems (Title 5)
• Innovative/Alternative (I/A) on-site systems Jet System Presby FAST
• Private satellite systems Village at Flat Hills Woodlands Village
• Sewer connections – regional/centralized Leominster Fitchburg
How is Lunenburg Wastewater Disposed of Now?How is Lunenburg Wastewater Disposed of Now?
Lunenburg CWMP11
Individual On-SiteTitle 5
Septic tank/leach field
I/A On-Site Systems
Types of Wastewater SystemsTypes of Wastewater Systems
Lunenburg CWMP12
Types of Wastewater SystemsTypes of Wastewater Systems
Satellite -- Defined service area, GWD permit
Village at Flat Hill
Lunenburg CWMP13
Types of Wastewater SystemsTypes of Wastewater Systems
Satellite -- Defined service area, GWD permit
Woodlands Village
Lunenburg CWMP14
Centralized - Traditional municipal facility
Types of Wastewater SystemsTypes of Wastewater Systems
Fitchburg East WWTF
Lunenburg CWMP15
Centralized - Traditional municipal facility
Types of Wastewater SystemsTypes of Wastewater Systems
Leominster WWTF
Lunenburg CWMP16
Population ProjectionsPopulation Projections
2005 Actual:
9,554
2025 EOEA Projection
11,133
1,579 additional residents per EOEA projections
Existing Planned Developments
956 planned units
3,55
5 ex
istin
g un
itsBasis for 2026
Projected Flows
Lunenburg CWMP17
• Centralized SystemsPublicly owned and operated
• Decentralized SystemsIndividual on-siteClusterSatelliteTypically privately owned and
operated
Types of Wastewater SystemsTypes of Wastewater Systems
Lunenburg CWMP18
• Off-site
Regional solutions
Centralized treatment
Satellite systems
• On-site
Cluster
Continued use of on-site systems
– Title 5Title 5
– I/A SystemsI/A Systems
– Septage Septage Management PlansManagement Plans
Proposed Alternatives - TreatmentProposed Alternatives - Treatment
Satellite Satellite SystemsSystems
OnOn--site Systemssite Systems
Centralized Centralized TreatmentTreatment
Satellite Satellite SystemsSystems
OnOn--site Systemssite Systems
Centralized Centralized TreatmentTreatment