Surface Water Management Plan
The city adopted the surface water management plan as part of the 2040 Comprehensive Plan in 2018.
Stormwater Management Ordinance & Standards
The city updated its stormwater management ordinance and standards in 2015. Following is a summary of the ordinance:
- All new development and redevelopment on projects which encompass 0.5 acre or more of disturbed area or 5,000 square-feet or more of new impervious surface will be evaluated based on the new stormwater requirements.
- Runoff rates shall not exceed the pre-project runoff rates for the 2-year, 10-year, and 100-year critical duration storm events.
- Total suspended solids will require treatment through infiltration practices for runoff volumes of at least 1.1 inch over all new impervious and redevelopment impervious portions of a project.
- No person shall throw, drain, discharge into the municipal separate storm sewer system any pollutants or waters containing any pollutants other than stormwater.
- Coal tar sealers are prohibited.
Ban on Coal Tar Sealers
The use of coal tar sealers on asphalt driveways is a common practice. Coal tar sealant products contain polycyclic aromatic hydrocarbons (PAHs), which are a group of organic chemicals formed during the incomplete burning of coal, oil, gas, or other organic substances. Scientific studies have demonstrated a relationship between the use of these products on stormwater runoff and certain health and environmental concerns.
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