Environmental Planning

Water Resources

MS4 Permit

Arizona Department of Environmental Quality issued the ADOT Municipal Separate Storm Sewer System Permit (MS4 Permit) on July 17, 2015 with an effective date of August 16, 2015. 

ADOT MS4 Stormwater Management Plan (SSWMP)
Permit Annual Reports

These reports discuss components of the SSWMP implemented by ADOT, proposed changes to the SSWMP, summary of data collected throughout the reporting year, annual expenditures, enforcement actions, inspections, public education programs, and water quality improvements or degradation.

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