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  1. GreenSystems

    Internal roof drains and freezing

    We are working stormwater projects involving the disconnection of impervious surfaces from the local CSO. Some of the buildings associated with our projects are equipped with internal roof drains directly connected to the sewer system in the building basements. We are looking to disconnect...
  2. GreenSystems

    Traditional stormwater modeling and green infrastructure

    Does anyone have a recommendation for a stormwater/BMP modeling software that incorporates traditional siumulation methodology(ies), but can evaluate wetlands (instead of traditional ponds), green roofs, porous pavement, etc.? I have been looking at HydroCAD, PondPack. Any others I should be...
  3. GreenSystems

    SWPPP fee

    I've been asked to quote a SWPPP for a 1 acre commercial development in Massachusetts. What would representative fees be for such an effort, without the ESC plan component (that's been done already)? I need a sanity check on my T&M estimate. Thank you!

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