https://www.google.com/search?q=douglas+development&source=lnms&prmd=nmiv&tbm=isch&sa=X&ved=0ahUKEwi61azbv6LRAhVLOyYKHR0AD1AQ_AUICSgD&biw=360&bih=510#imgrc=lQL6eCggSrsM4M%3A
Douglas Developement is a major property holder in Dc.
http://douglasdevelopment.com/properties/2130-queens-chapel-road/
I did a boundary/topography survey on this property. i think it has relevance to this discussion.
