I purchased a beautiful brick, 2 family brownstone in Ridgewood this Summer and promptly tested my backyard soil (Brooklyn College soil testing service). The results revealed high levels of Lead and other toxic chemicals. I needed to remove the soil and replace it with clean dirt so my young child could safely play. I also planned to grow a garden. Brooklyn College recommended Gennaro Brooks-Church from EcoBrooklyn! They are incredibly helpful, professional, neat, reliable, kind and truly informative. EcoBrooklyn deals with all sorts of green building issues. This is a solid company and I highly recommend them.