ODM2 Units Type Controlled Vocabulary ODM2 Working Group A vocabulary for describing the type of the Unit or the more general quantity that the Unit represents. Length integrated mass concentration A mass concentration per unit length. These units can be used to measure concentration inputs of a chemical along the length of a waterway. Chemistry CUAHSI http://his.cuahsi.org/mastercvreg/edit_cv11.aspx?tbl=Units&id=1125579048 Has same dimensionality as mass per unit area