Md. Code Ann., Envir. § 5-10A-03

If the owner or operator of a junkyard, automotive dismantler and recycler facility, scrap metal processing facility, or automobile graveyard that produces, collects, retains, dumps, or deposits trash, junk, or other refuse has not erected retaining walls or other restraining devices or procedures approved by the Administration, the presence of trash, junk, automobiles, or automobile parts in waters of the State, or on embankments or other sites where it may readily fall into or be transported into the waters of the State, is prima facie evidence of a violation of § 5-10A-02 of this subtitle.