The minimum usable open space/park area for commercial/industrial land divisions of ten acres or more and all residential land divisions, except short subdivisions, shall be ten percent of the total site. At least half of the open space within a residential development must be usable for active recreation. Open space shall meet the design criteria contained in LMC 14.23.088. (Ord. 1520 §56, 2017; Ord. 1431 §4, 2014; Ord. 1310 §14, 2008).