(A) Cut and fill slopes shall be provided with subsurface drainage as necessary for stability, and as recommended by the soils engineer and/or the engineering geologist.
(B) All canyons and buttress fills shall be provided with subdrains unless approved otherwise by the Director of Public Works, based upon the information provided by the engineering geologist and/or the soil engineer indicating that they are not necessary and recommending against them.
(Ord. 1449, passed 10-19-05)