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Planning Board presses Three Mile Harbor affordable housing team for drainage, clearing and revegetation details
Summary
At its July 10 meeting the Planning Board said the Three Mile Harbor 50‑unit affordable housing modification application is still incomplete, and asked applicants to address drainage field verification, provide consistent mapping of a natural rock swale, clarify clearing totals to keep within the approved 243,000 sq ft, and submit bus shelter elevations and lighting details.
The Planning Board renewed review of modifications to the Three Mile Harbor affordable housing project (286–290 3M Harbor Road) on July 10 and found the current submission incomplete on several technical fronts.
Planning Department staff summarized the applicants’ responses to prior board comments and the materials submitted since the June 5 review. Staff said the applicant provided recent SWPPP reports and photographs showing repaired sediment and erosion controls, and a town consulting engineer’s July 1 site visit reported that temporary measures were in satisfactory condition. However, staff and the consulting engineer flagged drain structures near Building 1 that appear to have been constructed in locations different from the approved plans; staff recommended a field verification of grades and drainage near Building 1 and corrective work if required.
Staff also asked the applicant to depict a natural rock swale (large glacial boulders) consistently across all plan sheets. The applicant proposes pollinator gardens and protective planting to screen the swale; the board asked for clearer depiction and additional measures, such as denser plantings along the adjacent meandering path, to reduce the risk of public access to the rock cluster. On the clearing calculation, staff emphasized that the project’s clearing must be limited to the 243,000 square feet originally approved (October 2021). The most recent submission did not adequately reconcile which areas count as cleared versus vegetated (staff said landscaped pollinator gardens do not qualify as unmaintained natural vegetation), and the board asked for a revised plan showing existing and proposed clearing areas with calculations.
Applicant representatives from the East Hampton Housing Authority and construction and engineering partners said they are meeting with Natural Resources to finalize a revegetation plan and that site stabilization measures appear to have performed during recent rainfall events. Walter Beal, vice president of construction for Georgica Green Ventures, said the site “performed very well” after a heavy rain following the previous meeting and that remaining work includes final paving to restore the roadway section.
The board directed applicants to submit: field verification responding to town consulting engineer drainage comments, consistent plan sheets showing the rock swale, bus shelter elevations, revised clearing/landscaping plans demonstrating compliance with the 243,000 sq ft limit, and additional plantings along the meandering path to enhance public safety. The Planning Board encouraged the applicant to coordinate with Natural Resources and return with a revised submission for continued review.
