520 Park Avenue and 111 Maywood Street Soil Excavation (Clark University)

At a glance

Based on auto-generated captions; the consultant's name and some details may be misheard.

What: Request for Determination of Applicability CC-2026-055 by Clark University to excavate and remove contaminated soils at 520 Park Avenue and 111 Maywood Street (MBL 14-023-00004 and 14-023-00016), on Beaver Brook.
Where it stands: negative determination issued 4-0 on 2026-08-03.
Next: about two weeks of excavation, then closure sampling under the state release abatement plan.

Re-excavation of earlier test pits that were backfilled in a prior RDA, plus a perimeter, on the former Chevy dealership lot along the front of the site (gasoline tank area, an oil or drain area with PAHs) and ash areas with lead and arsenic.
Soil is live-loaded to disposal facilities where possible; any stockpile is lined, covered and wattled, inside a fenced, locked area. One truckload of lead-failing soil goes out of state as hazardous waste.
Wattles along the property edge and extended along Beaver Brook; most excavation is outside the flood zone and mostly in paved parking.
Sidewalls and bottoms are sampled against commercial-use standards.

Fred Nathan asked whether the old dealership lot had been checked by DEP; the consultant said the release abatement plan was filed with DEP in July and backed by additional investigations.

About 14 minutes across 1 meeting (from transcript timestamps; approximate).

Meeting	Minutes
2026-08-03 - Conservation Commission	14

2026-08-03 - Conservation Commission - Heard from Clark's site professional; staff had no concerns; negative determination 4-0.