Without seeing the proposal, it shouldn’t be allowed if it is in a wetland or has a conservation restriction. The developer should show a decommissioning plan that is funded, to dispose of the panels at the end of their life. It should also not be allowed in a residential zone, only industrial or commercial zoned. You could also build it over a manmade drainage area. Years ago I used to work on Tracer Lane. Also, that silver building, they exceeded Waltham height restrictions by mounding the dirt up higher!