Corning Municipal Code Art. IV Building Regulations

Detention storage requirements may be met in total or in part by detention on flat roofs. Details of such designs to be included in the building permit application shall include the depth and volume of storage, details of outlet devices and down-drains, elevations of overflow scuppers, design loadings for the roof structure and emergency overflow provisions.

(Ord. 508 §4.01, 1991).

Paved parking lots may be designed to provide temporary detention storage of stormwaters on all or a portion of their surfaces. Outlets will be designed so as to slowly empty the stored water, and depths of storage must be limited to a maximum depth of seven inches so as to prevent damage to parked vehicles and access to parked vehicles is not impaired. Ponding should be relegated to those positions of the parking lots farthest from the area served.

(Ord. 508 §4.02, 1991).

All or a portion of the detention storage may also be provided in underground or surface detention facilities, to include basins, tanks, swales or leach trenches.

(Ord. 508 §4.03, 1991).

Designs of detention facilities will incorporate features which facilitate their inspection and maintenance. The growth of obnoxious weeds, the creation of conditions which support the growth of mosquitoes and other insects, and the decrease in available storage by accumulated sediments will all be controlled. The cleanup of accumulated debris and other materials after runoff events have subsided will be assured. Assignment of responsibility for maintaining facilities serving more than one lot or holding will be documented by appropriate covenants to property deeds or by other methods acceptable to the city unless responsibility is formally assigned to a public body.

A. Inspections. All privately owned detention storage facilities may, as resources permit, be inspected by representatives of the city not less often than once every three years. A certified report will be submitted covering the physical conditions, required storage capacity and operational conditions of key elements of the facility.

B. Corrective Measures. If deficiencies are found by the inspector, the owner(s) of the detention facility may be required to take the necessary measures to eliminate nuisances and correct structural deficiencies. If the owner(s) fails to do so, the city may undertake the work and collect from the owner(s) using lien rights if necessary.

(Ord. 508 §4.04, 1991).

Designs of detention facilities will incorporate safety features, particularly at outlets, on steep slopes and at any attractive nuisances to include, as necessary, fencing, handrails, lighting, steps, grills, signs and other protective or warning devices so as to restrict access during critical periods and to afford some measure of safety to both authorized persons.

(Ord. 508 §4.05, 1991).