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


Satellite -- Defined service area, GWD permit

Village at Flat Hill

Lunenburg CWMP13


Satellite -- Defined service area, GWD permit

Woodlands Village

Lunenburg CWMP14

Centralized - Traditional municipal facility


Fitchburg East WWTF

Lunenburg CWMP15

Centralized - Traditional municipal facility


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


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

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