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Commission approves septic upgrade at 11 Main Street with variances to allow work within buffers

Dennis Conservation Commission · December 18, 2025
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Summary

Down Cape Engineering presented a Microfast innovative alternative and pressure‑dose plan to upgrade the septic at 11 Main Street (Route 28); commissioners approved the project under the Wetlands Protection Act and granted variances to permit leaching components within the 100‑foot buffer and other required buffer work.

Dan Ojala of Down Cape Engineering presented improvements for a septic upgrade at 11 Main Street (Route 28) that would replace a deteriorated system with an innovative alternative and pressure dosing to reduce nitrogen while maintaining use until sewer becomes available.

Ojala said the site is constrained and the design reflects maximum feasible compliance, placing tanks and an internal system under parking to avoid losing public parking. Commissioners had no substantive objections and moved to approve the project and grant the variances needed to permit work within the 50‑ and 100‑foot buffers; staff will prepare an order of conditions for review at the next regular meeting.

Next steps: staff to draft order of conditions and verify Board of Health approval for the alternative system.