§ 42-21. Mudslide-prone areas.

(a)

The floodplain administrator shall review permits for proposed construction of 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 the following:

(1)

The type and quality of soils;

(2)

Evidence of groundwater 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, substantial improvement and other proposed new development shall be adequately designed and protected against mudslide damages;

(3)

The proposed grading, excavation, new construction, substantial improvement and other proposed new development do not aggravate the existing hazard by creating either on-site or off-site disturbances; and

(4)

Drainage, planting, watering, and maintenance shall not endanger slope stability.

(d)

Within zone M on the flood insurance rate map, the city shall adopt a drainage ordinance which at least complies with the standards of sections 7001 through 7006 and sections 7008 through 7015 of the most recent amendment of the 1973 Uniform Building Code:

(1)

The location of foundation and utility systems of new construction, substantial improvement and other proposed new development;

(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, etc.; and

(4)

Engineering drawings and specifications to be submitted for all corrective measures, accompanied by supporting soils engineering and geology reports.

(Ord. No. 99-11, § 3(16A.44.210), 6-16-1999)