RCW 68.74.010: Designation of family burial ground—Boundary requirements.

(1) A natural person may designate an area of land owned by the person as a family burial ground.

(2) If a property is co-owned by two or more natural persons, a family burial ground may be established on the property only with the written consent of all co-owners of the property.

(3) A family burial ground may not be established on any property co-owned by a combination of natural persons and legal entities.

(4) A family burial ground must be set back at least 25 feet from an existing parcel boundary and may not be established:

(a) Within 150 feet of a designated critical area, as defined in RCW 36.70A.030;

(b) Within 100 feet of the property line of a public right-of-way or boundary of an easement; or

(c) Within 100 feet of an existing well source used for drinking water or 200 feet of an existing spring source used for drinking water.

(5) A family burial ground may not comprise greater than 10 percent of the area of the parcel upon which it is established.