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Environmental Impact Commission approves minor stormwater amendment for 94 Sandpit Road
Summary
The commission approved a minor amendment to regulated activity 1196 at 94 Sandpit Road to reroute stormwater and add native plantings and erosion protection; engineers said the final outfall is sized for a 100-year storm and maintenance requirements will be included in the drainage report.
The Environmental Impact Commission on Aug. 14 approved a minor amendment to regulated activity 1196 at 94 Sandpit Road to redirect stormwater flow and add bank stabilization measures.
The amendment, requested by Safe Store Real Estate Company and presented by applicant representative Amy Suchins, responds to delays finalizing an easement with an adjacent property. "We were here last, a little over a year ago, and received an approval," Suchins said, and tonight’s amendment would reroute stormwater where the easement has not been finalized.
Project engineer Ben Judnack of Bowler Engineering described the changes as an improvement over existing conditions, noting that "currently, no storm water is treated on-site" and that the reroute and upsized outfall will reduce flows from existing to proposed conditions. Judnack said the final outfall pipe was sized based on the 100-year storm and that the drainage report analyzes the 2-, 25- and 100-year storms.
Judnack also outlined proposed site landscaping and erosion controls: "There will be 50, kind of plug-sized plantings proposed down by the outfall," he said, naming Pennsylvania sedge and other native species, and described an erosion-control blanket and coir (coconut fiber) protections to enhance bank stability. He said a planting plan will be formalized and submitted for commission approval.
Commissioners pressed for detail on the planting area and invasive-species removal. A commissioner asked for the square footage of the planting area; Judnack said he would provide the exact figure and acknowledged his team had not conducted a specific invasive-species investigation. "We can add a note for the contractor to make sure to remove any invasive species in the area of the outfall," he said. Staff and the applicant noted that prior approval conditions require off-site disposal of land‑clearing debris.
On maintenance, Judnack said the drainage report’s appendix F will include an owner manual with inspection schedules. Pretreatment will use isolator rows wrapped in filter fabric to trap sediment, and inspection ports will allow vacuum‑truck removal of accumulated material.
After discussion, a commissioner moved to approve the amendment "as presented, with the recognition of the health department’s review." The commission voted in favor and the motion carried.
The commission directed that the planting plan and final drainage documentation, including the owner manual and any invasive‑species mitigation notes, be finalized for the record.
