Measures to Control Storm Water Discharges from Construction Sites
• The County reviews construction site plans to ensure that nonstructural and structural Best Management Practices (BMPs) have been properly integrated into construction projects.
• Control of sedimentation and erosion is a key focus of the storm water program.
• County personnel perform construction inspections designed to provide operators with input to help them achieve compliance with the Arizona Pollutant Discharge Elimination System (AZPDES) storm water Construction General Permit (CGP).
Measures to Control Pollutants from Industrial Facilities
Certain categories of industrial facilities are required to obtain storm water discharge permits. See Storm Water Permits for Industrial Activities for more information about the types of industries impacted by these rules and regulations. Pima County performs inspections of industrial facilities as a way of providing operators with assistance in complying with the requirements of the Multi-Sector General Permit (MSGP) for industrial storm water discharge. An industrial facilities database, compiled and maintained by Pima, is used as a tool for prioritizing the inspection schedules.
Measures to Reduce Pollutants from Residential and Commercial Areas
Within unincorporated Pima County, roadways and associated drainageways (including street shoulders, constructed channels, and cement culverts) serve as the storm water conveyance system. The County maintains streets, roads, and drainageways through a variety of activities including: drainage structure maintenance; drainageway grading; roadway surface maintenance; drainageway mowing; roadway shoulder repair; removal of litter, debris, and weeds, etc.). County ordinances, rules, policies, and procedures help protect and maintain the storm water drainage/conveyance system.
Measures to Control Illicit Non-Storm Water Discharges and Illegal Dumping into Storm Drains/Washes
• Illicit non-storm water discharge surveillance/outfall inspections.
• Investigation of potential illicit non-storm water discharges.
• Public awareness programs, such as the Household Hazardous Waste Program
• Illegal (wildcat) Dumping Program.
• Storm water business assistance for construction operators and industrial facilities.
Monitoring Storm Water Runoff Within the County’s Municipal Separate Storm Sewer System (MS4)
Pima County is developing a
Storm Water Assistance Program as an extension of its existing
Business Assistance Program. The Storm Water Assistance Program
is designed to help businesses comply with storm water regulations
and to educate citizens about storm water runoff and associated
concerns.
