Barnstable Town Council Update on Wastewater Efforts In Barnstable Department of Public Works January 23, 2020 1 Town of Barnstable, Department of Public Works
Update Since December Update Since December • Finalized the Draft CWMP • Submit Draft CWMP to MEPA – Expanded Environmental Notification Form (EENF) was submitted on January 15, 2020 – Mill Pond Dredging and other non-traditional projects may be handled as a notice of project change (NPC) to the CWMP. – Keys upcoming dates are: • Publication in the Environmental Monitor: 2/10/20 • ENF Comments Due: 3/2/20 • ENF Decision, EIR Comments: 3/12/20 • EIR process begins thereafter, timeline will be dependent upon comments received. 2 Town of Barnstable, Department of Public Works
3 Town of Barnstable, Department of Public Works
Non-traditional Focus Area – Non-traditional Focus Area – Three Bays Three Bays Non-traditional methods. • Cotuit Bay Inlet Dredging • Mill Pond dredging • Abandoned cranberry bogs conversion • Warren’s Cove - aquaculture • Alternative septic systems • Permeable Reactive Barriers (PRBs) • Stormwater treatment 4 Town of Barnstable, Department of Public Works
Sampson’s Island Dredging Sampson’s Island Dredging 5 Town of Barnstable, Department of Public Works
Sampson’s Island Dredging Sampson’s Island Dredging 6 Town of Barnstable, Department of Public Works
Mill Pond Dredging Mill Pond Dredging • The Issue: – Mill Pond is full of silt and debris – 9 feet thick in places – In 20 years nitrogen removal capacity has declined from 20% to 10% – Healthy ponds = 30% to 50% – If 50% restored, estimated remove over 2,200 kg/year of additional nitrogen • The Solution: – Dredge to its original depths (sand layer) and perimeter – Estimated 30,000 CYs of material (to be confirmed) – Pond depths restored to approximately 8 feet in the deepest areas • Nest Steps – Once CWMP approved by MEPA, NPC will be submitted for Mill Pond 7 Town of Barnstable, Department of Public Works
Cranberry Bogs Cranberry Bogs • The Issue : – Existing and abandoned bogs - Ideal locations for nontraditional solutions • The Solutions: – Effort led by BCWC – Conversion to ponds (~50%) – Conversion to wetlands (TBD) – Installation of floating wetlands (8- 15%) • Next Steps: – BCWC working with the Town, EPA, UMASS, and Land Owners to pilot potential solutions 8 Town of Barnstable, Department of Public Works
Warrens Cove Warrens Cove • The Issue: – Currently not appropriate for aquaculture due to silt. – Potential to be nursery for aquaculture farms – The product relocated to established aquaculture farms • The Solution: – Dredging Warrens Cove back to a sandy bottom – Establish aquaculture nurseries • Variety of species – The Cape Cod Commission estimated that aquaculture beds/floating racks can remove 8-15% of the nitrogen they encounter • Next Steps: – Sampling efforts – Meet with regulatory agencies – Permitting Town of Barnstable, Department of Public Works 9
10 Town of Barnstable, Department of Public Works
Other Non-traditional Other Non-traditional Opportunities Opportunities • PRBs – EPA Demonstration Project • Prince Cove Area – Horse Farms? • Alternative Septic Systems – Prince Cove – BCWC efforts at Shubael Pond • Alternative Toilets Town of Barnstable, Department of Public Works 11
Stormwater Stormwater • The Issue: – Stormwater systems are in various states of repair • The Solution: – A comprehensive survey identifying those that need repair, or replacement. – Identify new systems/BMP needed to protect water quality – Credit for work already done • Cotuit Town Dock, etc. 12 Town of Barnstable, Department of Public Works
Next Steps Next Steps • Ongoing public outreach as requested • Staffing Discussions to implement the plan – Preliminary Design in house – Final Design by consultants – Construction Administration (CA) and Inspection in-house with some consultant support – WPCF design, CA, and inspection by consultants • Continuing preliminary design of traditional projects that are underway • Permitting efforts • Continuing to meet with Vineyard Wind regarding the Strawberry Hill Road Project and Phase II 13 Town of Barnstable, Department of Public Works
Discussion? Discussion? 14 Town of Barnstable, Department of Public Works
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