Caches and collections may be considered significant and be recognized or designated as landmarks, provided that at least one of the following conditions is met:     
       (1) the cache or collection was assembled with public funds or taken from public lands;      
       (2) preservation of materials is adequate to allow the application of standard archeological or conservation techniques;      
       (3) the cache or collection is of research value, thereby contributing to scientific knowledge; or      
       (4) the cache or collection is of historic value or contributes to a theme.      
     Source Note:        The provisions of this §26.12 adopted to be effective May 20, 2013, 38 TexReg 2980