A conservation easement is valid even though


(1) it is not appurtenant to an interest in real property;


(2) it can be or has been assigned to another holder;


(3) it is not of a character that has been recognized traditionally at common law;


(4) it imposes a negative burden;


(5) it imposes affirmative obligations upon the owner of an interest in the burdened property or upon the holder;


(6) the benefit does not touch or concern real property; or


(7) there is no privity of estate or of contract.