(a) The Floodplain Administrator shall review permits for proposed construction or other development to determine if it is proposed within a mudslide area.
(b) Permits shall be reviewed to determine that the proposed development is reasonably safe from mudslide hazards. Factors to be considered in making this determination include but are not limited to:
(1) The type and quality of soils;
(2) Evidence of ground water or surface water problems;
(3) The depth and quality of any fill;
(4) The overall slope of the site; and
(5) The weight that any proposed development will impose on the slope.
(c) Within areas which have mudslide hazards, the following requirements apply:
(1) A site investigation and further review shall be made by persons qualified in geology and soils engineering;
(2) The proposed grading, excavation, new construction and substantial improvements shall be adequately designed and protected against mudslide damages;
(3) The proposed grading, excavations, new construction and substantial improvements do not aggravate the existing hazard creating either on-site or off-site disturbances; and
(4) Drainage, planting, watering and maintenance shall not endanger slope stability.
(d) Prior to the issuance of building permits, all properties within any Flood Zones inundated by the 100 year flood as designated on the latest edition of the Flood Insurance Rate Map shall demonstrate to the Flood Plain Administrator that any and all structures are adequately protected consistent with the most current provisions of the grading requirements set forth in the agencies latest edition of the adopted Building Codes. These requirements shall also include the following elements:
(1) The location of foundation and utility systems of new construction and substantial improvements;
(2) The location, drainage and maintenance of all excavations, cuts and fills and planted slopes;
(3) Protective measures, including but not limited to retaining walls, buttress fills, subdrains, diverter terraces, benchings, and the like; and
(4) Engineering drawings and specifications to be submitted for all corrective measures, accompanied by supporting soils engineering and geology reports.
(§ 1, Ord. 2409, eff. February 4, 1988)