(A) Permit required. No person shall connect to the city’s storm sewer system, either directly or indirectly, without first obtaining a storm sewer discharge permit from the city.
(B) When permit required. Any person beginning new construction (development of an undeveloped parcel) or redevelopment (as defined in this chapter) in the city shall obtain a storm sewer discharge permit before commencing construction.
(C) Application. The applicant for a storm sewer discharge permit shall submit the following to the city:
(1) A completed application form. Application forms will be available at the City Engineer;
(2) A plan incorporating stormwater BMPs that meet the requirements of § 155.019;
(3) A plan outlining how the applicant will maintain the stormwater improvements listed in the application; and
(4) A fee in an amount set by resolution of the City Council. The application shall be submitted to the city’s Engineering Department.
(D) Review. The storm sewer discharge permit application shall be reviewed by the City Engineer and either approved, approved with conditions, or denied. Either the permit applicant or the city may appeal the City Engineer’s decision to the Mayor. The appeal shall be made according to procedures established by the Engineering Department.
(E) Factors. When deciding whether to approve, conditionally approve, or deny a storm sewer discharge permit application, the following factors shall be considered:
(1) Whether the application complies with applicable city ordinances and policies;
(2) Whether the application complies with the City Storm Drainage Master Plan;
(3) Whether the proposed discharge incorporates effective best management practices;
(4) Whether the proposed discharge introduces pollutants into the storm drain system;
(5) Whether the proposed discharge creates a safety hazard;
(6) Whether the proposed discharge affects the integrity of the storm sewer system infrastructure;
(7) Whether the proposed discharge endangers the city’s drinking water;
(8) Whether the proposed discharge endangers adjacent property; and
(9) Whether the applicant has submitted a maintenance plan ensuring the proper maintenance and upkeep of the applicant’s discharge and on-site stormwater improvements. Failure to construct or maintain stormwater improvements in accordance with an approved storm sewer discharge permit shall be a violation of this chapter.
(F) As-builts. Any person discharging to the storm sewer system shall provide the city’s storm sewer utility with as-built plans showing the details and the location of the discharge. The plans shall be in a format that is acceptable to the city.
(G) Rate. Discharges to the storm sewer system shall be designed so that the discharge to the storm sewer system does not exceed one-tenth cubic feet per second per acre.
(H) LID. For new development or redevelopment projects that disturb greater than or equal to one acre, including projects less than one acre that are part of a larger common plan of development or sale, an evaluation must be conducted of, and LID approach to, the project, in conjunction with the UDEQ’s Guide to Low-Impact Development within Utah. If a LID approach cannot be utilized, a written explanation of the reasons preventing this approach and the rationale for the chosen alternative controls on a case-by-case basis for each project.
(I) Eightieth percentile storm event. For new development or redevelopment projects that disturb greater than or equal to one acre, including projects less than one acre that are part of a larger common plan of development or sale, to manage rainfall on-site and prevent the off-site discharge of the precipitation for all rainfall events less than or equal to the eightieth percentile rain event.
(Prior Code, § 13.22.050) (Ord. 43-2019, passed 12-18-2019; Ord. 17-2020, passed 5-20-2020) Penalty, see § 155.999