§ 26-177. Grading, sedimentation and erosion control plans.

Site grading, sedimentation and erosion control plans shall be submitted to the community development director for review and approval before final subdivision or land development plan and plat approval. No stripping or grading shall take place nor will building permits be issued prior to approval of this plan.

(1)

Subdivision site grading plan. The grading plan shall be prepared by a licensed professional engineer in the state and shall be accompanied by a detailed sedimentation and erosion control plan. The contents of the plan shall include but not be limited to the following information:

a.

Existing grade contours drawn at two feet maximum intervals.

b.

Existing and proposed property lines with lot and block numbers.

c.

Elevation and location of nearest bench mark (U.S.G.S. datum).

d.

Final grade contours drawn at two feet intervals depicting major subdivision drainage patterns and indicating final grade spot elevations at each lot corner.

e.

The 100-year flood limit and elevation in the vicinity of buildings along with the building low entry elevation.

f.

All existing easements and rights-of-way of record and proposed easements and rights-of-way including drainage easements.

g.

Existing and proposed utilities.

(2)

Single lot site grading plan. Applications for single lot building permits shall be accompanied by a plot and grading plan which shall include the following:

a.

Existing and proposed property lines with lot and block numbers.

b.

Proposed building location.

c.

Proposed type of structure (i.e. bi-level, split-level, etc.).

d.

Top of foundation elevations, low entry elevation and proposed grade at principal structure corners and lot corners.

e.

Approximate locations of proposed drainage swales indicated with spot elevations and directional arrows depicting flow patterns.

f.

Additional information as required by the community development director to ensure protection of the proposed improvement and adjacent property.

(3)

Site grading criteria. The following minimum site grading criteria shall apply to all permit applications:

a.

The minimum slope for the first five feet away from structures in paved areas shall be two percent (one-quarter inch per foot).

b.

The minimum slope in paved areas beyond the five feet building zone, including parking lot valley gutters shall be one percent (one-eighth inch per foot).

c.

The minimum slope in unpaved areas for the first five feet away from structures in unpaved areas shall be four percent (one-half inch per foot).

d.

The minimum slope in unpaved areas beyond the five feet building zone, including drainage swales shall be two percent (one-quarter inch per foot).

e.

The minimum slope in drainage swales in unpaved areas may be one percent if a concrete paved trickle channel is provided.

(Code 1967, ch. 7, art. I, § 7-8; Ord. No. 1400, § 1, 3-26-2001; Ord. No. 1689, § 6(7-8), 7-9-2012; Ord. No. 1729, § 5, 1-12-2015 )