To ensure maximum solar access, all subdivisions shall:
(a) Provide for east-west street orientations, when practicable, based upon relationships to existing connecting roadways, grades, natural features and all other relevant physical considerations; and
(b) Be designed to insure the maximum number of buildings receive sunlight. Locate buildings and vegetation so unobstructed sunlight reaches the rooftop and south wall of the greatest possible number of buildings between the hours of 9:00 a.m. and 3:00 p.m.