A. Stormwater Design, BMPs, And LID:
1. Adoption: The city adopts as its stormwater design and best management practices (BMP) manuals the following publications, which are incorporated by reference in this chapter as is fully set out herein:
a. "City Of Draper Drainage Design Criteria";
b. "Draper City Storm Drain Master Plan";
c. "Urban Storm Drainage Criteria Manual Volume 3-Best Management Practices 2011".
These documents include a list of acceptable LID and BMPs that include specific design performance criteria and operation and maintenance requirements for each stormwater practice. The documents may be updated and expanded from time to time, at the discretion of the city council, upon the recommendation of the city engineer, based on improvements in engineering, science, monitory and local maintenance experience. Stormwater facilities that are designed, constructed, operated, and maintained in accordance with these BMP criteria will be presumed to meet the minimum water quality performance standards.
2. Design: LID/BMPs are required to be incorporated into site drainage and water quality for sites that require a UPDES Utah construction general permit. Selection and design shall be required to fit into the constraints described by the "City Of Draper Drainage Design Criteria" and the following titles of this code:
a. Title 9, "Land Use And Development Regulations";
b. Title 10, "Building Regulations";
c. Title 12, "Flood Damage Regulations";
d. Title 17, "Land Development";
e. Title 18, "Land Disturbance".
3. LID/BMPs: LID and BMPs including, but not limited to, the following, shall be considered for new development within the city:
a. Oil/water separators, snouts, or equivalent structural BMPs to treat runoff of sediment and other contaminants that may discharge into the Draper City storm sewer system.
b. Rainwater harvesting practices as allowed by local, state, and federal code.
c. Depressed swales or bioswales incorporated into landscaped areas designed for filtration, infiltration and/or evapotranspiration.
d. Detention ponds that incorporate sedimentation and pollution reduction, percolation for groundwater recharge, utilized native vegetation and features, or provide multiuse features in addition to runoff detention.
e. Green roofs, preservation of existing native vegetation, or reduction of impervious areas to reduce runoff.
f. Substitution of pervious hardscape for impervious hardscape for infiltration.
B. Stormwater Maintenance And Preservation Plan Requirements: Private properties with private storm drain systems are responsible to develop a stormwater maintenance and preservation plan. The plan shall detail the property owner's inspection and maintenance requirements for on site drainage infrastructure including the prevention and removal of potential pollutants. (Ord. 1233, 11-15-2016)
C. Maintenance Agreement: New development and redevelopment construction sites completed after January 1, 2003, disturbing 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, and to be served by a private on site stormwater management facility shall execute a maintenance agreement. The maintenance agreement shall operate as a deed restriction binding on the current property owner and all subsequent property owners. The maintenance agreement shall: (Ord. 1240, 12-20-2016)
1. Assign responsibility for the maintenance and repair of the stormwater facility to the owner of the property upon which the facility is located.
2. Assign responsibility for periodic annual inspection and documentation to the property owner for the purpose of documenting maintenance and repair needs.
3. Grant permission to the city to enter the property at reasonable times and to inspect the drainage facilities, maintenance and preservation plan, and owner annual inspection records to ensure maintenance and preservation plan is being executed.
4. Provide that maintenance needs must be addressed in a timely manner, on a schedule to be determined by the city engineer. (Ord. 1233, 11-15-2016)
5. Provide that if the property is not maintained or repaired within the prescribed schedule, the city engineer shall perform the maintenance and repair at the city's expense, and bill the same to the property owner. (Ord. 1240, 12-20-2016)