had to make a new name old one wouldn't work for whatever reason.I got to talk with NRCS and he did his soil survey over the computer said they won't come out to do one ?? He said the first 55 inches is clay and then past 60" i think he said sand stone that will leak like a tub with an open drain..Told me i should be fine to dam up the ravine at its narrowest point and let her fill ???? dothe trees need to be removed ?or can i get away with leaving some in?? He told me he would emal a contracters list for the area? This sound to easy? how can he know the exact soil without checking it in person? ANY HELP WILL BE GREAT THANKS