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MARCH 21, 2005SHAWNEE PLANNING COMMISSION MINUTESPAGE 37

practical matter, this standard renders the lot unbuildable unless the applicant constructs a storm sewer to replace the channel.  The storm sewer will require at least a drainage structure, if not more.

x.

Although the proposed development is a residential use, the new storm sewer must be designed to convey the runoff from a 4 percent storm because of the existing and potential nonresidential uses surrounding the development site.

y.

As discussed below, the development site is on a non-curb street.  Therefore, the applicant is responsible for improving the existing road ditch to convey the runoff from a 4 percent storm.

z.

The applicant is responsible for submitting a storm drainage plan for the development site showing a conceptual drainage system, a drainage area map, and a drainage table summarizing the hydrologic and hydraulic analysis for the development site and all upstream tributaries.

aa.

The applicant is responsible for submitting a final storm drainage plan as an integral part of the site development plans to be submitted for a building permit.

8.All driveway approaches required for this development shall be designed according to the standards in the Shawnee Manual of Technical Specifications and Design Criteria.

c.

The site development plans submitted for a building permit must include drainage calculations to support the sizing of the road ditch and culvert under the approach, and sufficient spot elevations along the lot frontage at the street pavement, along the centerline of the approach at the street pavement, low point, and right-of-way, and along the flowline and back slope of the road ditch to insure that the approach and the right-of-way are properly graded.

bb.

Residential driveway approaches on non-curbed streets will be designed according to Standard Detail 21-8, and the following:

An approach will be a minimum of 18 feet wide measured at the pavement edge, which must include flare-sections on both sides.

An approach will be a maximum of 30 feet wide measured at the pavement edge, which will include flare-sections, if any.

The triangular flared-sections of an approach will be 3 feet wide measured at the pavement edge and 6.5 feet long measured perpendicular to the pavement edge.

No portion of an approach will extend across the prolongation of a side lot line.

An approach will have a minimum separation of 25 feet from a street intersection, measured from pavement-edge to the pavement-edge.

Stormwater collected on a public street is not allowed to drain onto adjoining properties.  An approach will match the existing roadway crown,

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