No modification of the approved grading plans may be made without the approval of the Planning and Development Director. All necessary geotechnical reports shall be submitted with the plans. (Ord. No. G-1177, § 1; Ord. No. G-1192, § 1; Ord. No. G-1203, § 3; Ord. No. G-3313, § 1; Ord. No. G-5590, § 1, 2011; Ord. No. G-5707, 2012)