18.104.110: YARDS:
In the M-P zone:
   A.   For general yard provisions, see sections 18.148.040 through 18.148.060 of this title.
   B.   Where the M-P zone fronts, sides or rears on a street which is a boundary with a residential zone, there shall be a yard abutting such street of not less than fifty feet (50'). The twenty five feet (25') nearest the street shall be landscaped and maintained. The remainder may be used for parking.
   C.   Where the M-P zone fronts, sides or rears on a street which is not a boundary with a residential zone, there shall be a yard abutting such street of not less than twenty five feet (25'). The ten feet (10') nearest the street shall be landscaped and maintained. The remainder may be used for parking.
   D.   Where the M-P zone sides or rears directly on property in a residential zone, there shall be a yard of not less than fifty feet (50'). Such yard may be used for parking. A solid masonry wall six feet (6') in height shall be installed along the property line abutting the residential zone.
   E.   Where the M-P zone sides or rears on an alley which is a boundary with a residential zone, there shall be a yard of not less than fifty feet (50'). The yard may be used for parking. A solid masonry wall six feet (6') in height shall be installed along the property line abutting the residential zone. (Ord. 1000 § 27.53(D), 1955)