01/15/2019 BOARD OF SELECTMEN Agenda Packet

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s E5.6 Adaptive Management Flan Fallowing the submittal of the final CWMP, the Sewer Commission/Town and District will work to formalize the Adaptive Management Plan. These efforts would include those non-traditional methods discussed in Chapter 4 and Chapter 6. The following were specifically identified in the Recommended Plan (Chapter 6): • Shellfish Propagation (key aspect of Recommended Plan) ® Stormwater Mitigation • Fertilizer Management The following are other technologies and approaches discussed in the planning effort that may be considered through adaptive management. This list includes but is not limited to the following: • Demonstration Projects: — Permeable Reactive Barriers — Wetland Restoration — Eco Toilets a Land Management • Floating Wetlands • Ocean Outfall • CCC 208 Plan technologies as appropriate The plan will also cover both the short- and long-term monitoring and modeling required to set decision points on performance of the recommended plan and timing. As the plan is currently crafted, existing infrastructure will be utilized to its fullest extent, while several small "Phase 1° projects requiring extension of sewers in areas within the Mashpee River watershed are proposed in addition to shellfish aquaculture. As the monitoring and modeling demonstrates performance (especially as it relates to shellfish aquaculture), adjustments in additional shellfish, other nitrogen removal measures, or advancement/ delay in sewer extensions will be implemented as needed to address nitrogen removal performance. This will be done with consideration of future development within the watersheds, shellfish health, and advancement of other mitigation approaches allowing the Town to make mid-course adjustments to their implementation approach; changes will be documented through Notices of Project Change. ES.6.1 Monitoring and Modeling It is understood that ongoing and proposed environmental monitoring activities may indicate environmental changes, and mid-course corrections to the plan implementation may be necessary. This understanding of possible mid-course corrections is often referred to as "Adaptive Management". The following components of the compliance monitoring of this plan are identified. It is understood that as time progresses the plan will need to be adjusted to account for changes in permitting requirements and to take into consideration the changes in the environment. Initial/Short-Term Monitoring and Modeling Shellfish/estuary baseline monitoring. 8612001 A Town of Mashpee Sewer Commission ES-10 Final Recommended Plan/Final Environmental Impact Report