§ 6-59. Plans and specifications.

(a)

Detailed plans and specifications shall accompany each application for permit for any building or structure where plans and specifications are deemed necessary by the appropriate inspector in order for him to determine whether the proposed work complies with the appropriate regulatory codes or as required by this chapter Plans shall be drawn to scale with sufficient clarity to indicate the nature and extent of the work proposed and the plans and specifications together shall contain information sufficient to indicate that the work proposed will conform to the provisions of this chapter and the appropriate regulatory codes. Where plans and specifications are required, a copy of the same shall be kept at the work until all authorized operations have been completed and approved by the appropriate inspector.

(b)

Lots and all development projects that are not required to have a storm water management permit by the rules and regulations set out for such projects by the North Carolina Department of Environmental Quality (NCDEQ) shall be required to submit a storm water management plan. The plan shall comply with the following requirements:

(1)

Runoff from all impervious surfaces for a storm event equaling a rainfall depth of 1.5 inches shall be collected and infiltrated on site. Impervious surfaces shall include all impervious pavements, roof structures, impervious sidewalks and any other impervious surfaces constructed on the lot. Uncovered wood walkways and decks shall not be considered impervious as long as the wood surface is made of typical decking materials that allow for water to drip through between the surface members. This also includes synthetic wood materials used for decking and walkways.

(2)

Pervious materials such as pervious concrete, clean washed stone and pervious pavers will be allowed as long as the designer allows for a storage depth in the void areas of the clean washed stone or the sub base of the pervious pavement structures proposed. These areas will be considered pervious and not be included for any runoff storage calculations.

(3)

All plans and specifications shall be signed and sealed by a state-registered professional engineer. The plans shall include all calculations and pertinent documentation for the construction of any runoff storage measures or pervious pavement devices. All plans should follow good engineering practices.

(4)

The applicant shall submit three copies of the plan to the building inspector when applying for a building permit.

(5)

Upon completion of the proposed storm water management system the engineer of record shall provide a signed and sealed written certification to the building inspector stating that the proposed runoff storage and infiltration structures were installed according to the plans. If field revisions were made during construction the certifying engineer should provide a record drawing showing all revisions and include a statement in the certification documentation that all system components as installed will provide the storage required and operate in such a manner to be commensurate with the storage and infiltration of the design storm event as outlined in (1).

(6)

The maintenance of all private storm water runoff systems shall be the responsibility of the property owner. System failures such as excessive erosion, distributing runoff onto adjoining properties, sinkholes or a failure of any system to perform as designed will be the sole responsibility of the property owner.

(Code 1979, § 9-1034; Code 1990, § 4-51; Ord. No. 99-006, § 1, 10-13-1999; Ord. No. 01-003, § 1, 7-11-2001; Ord. of 3-9-2005; Ord. No. 2017-001, § 1, 1-11-2017)