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Brockton panel approves septic upgrade at 325 Thatcher Street with conditions to protect wetlands
Summary
Engineers and city staff described a pumped septic system and Board of Health variance; the commission approved an order of conditions requiring markers, stockpile limits, and standard monitoring reports.
The Brockton Conservation Commission on Dec. 17 voted to issue an order of conditions for a septic system replacement at 325 Thatcher Street, approving a pumped system design and attaching several site‑protection special conditions.
Peter Lyons of Collins Civil Engineering Group, representing the property owner, described a plan to replace a failed septic with a tank and pump chamber that will send liquids uphill to a 20‑by‑35‑foot leaching field located well outside the 100‑foot buffer. Lyons said the Board of Health witnessed percolation tests on Nov. 12 and granted a variance to reduce the usual 4‑foot Title 5 separation to 3 feet for this site. He also described erosion controls, a proposed 12‑inch straw wattle outside the 100‑foot buffer, and an alarmed pump chamber with three floats and a visual/audible alarm that would alert residents if the pump failed.
City agent Kyle reviewed the compliance questions under the Wetlands Protection Act and said the proposed layout, the Board of Health variance and erosion controls meet the act’s requirements as presented. Commissioners asked about equipment access, soil stockpiling and tree impacts; Lyons said soil removed for tanks (about 2,500 gallons equivalent) would be taken off site immediately while small stockpiles for backfill could be placed outside the 100‑foot buffer.
Commissioners added special conditions requiring: conservation markers (locations and frequency to be specified by staff), all temporary stockpiling of soil and materials to be located outside the 100‑foot buffer, and a continuing condition that lawn maintenance be kept on‑site and not extend into the adjacent paper street (Hammond Street). Kyle said the commission’s standard monitoring language would require a planting report after installation and two annual monitoring reports before final certification.
Lisa, a caller from the public, asked whether the property could hook to sewer; Kyle said no sewer runs directly in front of the lot and a sewer connection would require significant construction. After public comment and questions, Commissioner Curtis moved to issue the order of conditions with Kyle’s special conditions; the motion passed by roll call.
The order allows construction within the limits described but ties approval to the specified erosion controls, marker installation and monitoring reports required to receive a certificate of compliance.
The commission closed the hearing and issued the order; staff will work with the applicant to finalize the specific marker placement and monitoring schedule.
