Phase II – Management Techniques and Alternatives Identification and Screening

1. Workshop – August 27, 2007 Lunenburg Comprehensive Wastewater Management Plan Phase II – Management Techniques and Alternatives Identification and Screening

2. CWMP Phases • 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

3. Phase 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

4. CWMP Phases • 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

5. Phase II - Alternatives Identification and Screening • Proposed Alternatives • Collection • Treatment • Effluent Disposal • Review Criteria • Technical • Environmental • Institutional • Economic

6. Phase II CWMP • 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

7. Draft Phase II report • Section 1 – Introduction • Section 2 - WW Management Alternatives Reviewed as Tech Memo #1 • Section 3 - Potential Treatment/Disposal Site Locations Reviewed as Tech Memo #2 • Section 4 - Short Listed Alternatives • Section 5 – Assessment of Management Techniques • Section 6 - Public Participation

8. Technical 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

9. Questions and Comments

10. How is Lunenburg Wastewater Disposed of Now? • 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

11. Types of Wastewater Systems • Individual On-Site • Title 5 • Septic tank/leach field I/A On-Site Systems

12. Types of Wastewater Systems Satellite -- Defined service area, GWD permit Village at Flat Hill

13. Types of Wastewater Systems Satellite -- Defined service area, GWD permit Woodlands Village

14. Types of Wastewater Systems • Centralized - Traditional municipal facility Fitchburg East WWTF

15. Types of Wastewater Systems • Centralized - Traditional municipal facility Leominster WWTF

16. 956 planned units 1,579 additional residents per EOEA projections 3,555 existing units 2025 EOEA Projection 11,133 Existing Planned Developments Population Projections 2005 Actual: 9,554 Basis for 2026 Projected Flows

17. Types of Wastewater Systems • Centralized Systems • Publicly owned and operated • Decentralized Systems • Individual on-site • Cluster • Satellite • Typically privately owned and operated

18. Proposed Alternatives - Treatment • Off-site • Regional solutions • Centralized treatment • Satellite systems • On-site • Cluster • Continued use of on-site systems • Title 5 • I/A Systems • Septage Management Plans