Hi Kris, I know it's frustrating when you can't get an answer but to be honest, I don't understand your post?
Maybe it's my viewer but I don't see a "red dashed line" on your attachment? The attachment has me befuddled as to what is going on? It looks like you are flooding a perfectly good house?
Also, you want to go from 0.9 acre and ADD 0.5 acre for a total of 1.4 acres? I apologize but I have no idea what is going on?
