(1) The site used for TWH must be:

(a) Adequately drained and not subject to periodic flooding;

(b) Located a distance of at least two hundred feet from all surface water;

(c) Located so the drainage from and through the TWH will not endanger any domestic or public water supply;

(d) Graded, ditched, and made free from depressions which allow water to become a nuisance;

(e) Adequate in size to prevent overcrowding of necessary structures; and

(f) Located on a slope which is not more than one unit (inches, feet, etc.) vertical per twenty units horizontal.

(2) Any structure used for sleeping or preparing and serving food must be located at least five hundred feet from any area in which livestock is kept.

(3) All TWH structures must be located a minimum of ten feet from any other structure or building.

(4) The TWH must have adequate lighting to provide safe passage for occupants to travel between TWH facilities.

(5) Common toilet facilities must meet the following:

(a) When a toilet is in a separate building from the sleeping room, the toilet room must be not more than two hundred feet from the door of each dwelling unit;

(b) No person has to pass through a sleeping room to reach common toilet facilities;

(c) Comply with the toilet ratios identified in WAC 246-359-560;

(d) If the TWH will provide for occupancy by both sexes, there must be separate toilet rooms for each sex that meet the required ratio as defined in Table 1 of WAC 246-358-093 and separate facilities by solid walls or partitions extending from the floor to the roof or ceiling when facilities for each sex are located in the same building; and

(e) Common toilet facilities used for both men and women must:

(i) Have separate and distinct entrances on separate walls;

(ii) Must be separated by at least twenty feet; and

(iii) Locate the women's entrance to be visible from and oriented toward the majority of the TWH dwelling units.