The Stormwater permits program protects surface waters from stormwater runoff in urban areas.
The National Pollutant Discharge Elimination System (NPDES) stormwater permits program comes from the 1972 Federal Clean Water Act and its major amendment the 1987 Water Quality Act. The United States Congress directed the Environmental Protection Agency (EPA) to introduce these regulations to protect surface waters from stormwater runoff in urban areas. Urban stormwater runoff is considered to be one of the leading sources of poor water quality due to its tendency to contain heavy concentrations of pollutants from vehicles, buildings, pavement, industry and other urban sources.
Stormwater Jurisdictions and Regulations
There are two stormwater jurisdictions and regulations that communities and owners need to follow. Construction site owners/operators must satisfy both State and City regulations.
- State Regulations: Information about the Arizona Pollutant Discharge Elimination System (AZPDES) stormwater municipal, construction and industrial programs.
- City Program: Information about the City of Yuma's stormwater program and regulations.
- Colorado River Designation as Impaired Water: In its 2006/2008 303 (d) Impaired Waters list, ADEQ designated the Colorado River segment in the City as impaired for low dissolved oxygen and selenium. The impairment has been categorized as "Impaired surface waters where a Total Maximum Daily Load (TMDL) analysis is required." The TMDL has yet to be defined by ADEQ.
To meet the requirements of Part V.A.4 of General Permit Number AZG2002-002, the City's Stormwater Management Plan (SWMP) has been modified, by specifying an Additional Control Measure (ACM) to address this designation. The intent of this ACM is to reduce the discharge of 303(d)-listed pollutants from the City's stormwater drainage system to the Colorado River.
One of the prominent features of the impaired designation is the an additional requirement that all construction sites that disturb one or more acres and are located within 1/4 mile of the River will need a site specific Stormwater Pollution Prevention Plan (SWPPP). This site specific SWPPP will be reviewed by ADEQ before the start of construction and contractors will be required to perform stormwater inspections of the site at seven day intervals.
The City has delineated areas that drain into the impaired segment of the Colorado River and these areas, called Priority Area (PA), are reflected in the City Stormwater Atlas published in July 2014. The City is developing an inventory of the PA which will be added to the SWMP in 2015.
Public Involvement & Participation
The City has created a hotline to report any dumping of non-stormwater substances into catch basins and storm drains. Such substances may include gray water, commercial waste, swimming pool water, trash, construction debris, or sediment runoff from construction sites. Residents are encouraged to anonymously report non-stormwater discharges by calling (928) 373-4520.
For More Information
For more information about the Stormwater Program, please contact Development Engineering...