In the fall of 1997, the City of
Mesa was issued a National Pollutant Discharge Elimination
System (NPDES) Permit that enabled the discharge of treated
wastewater into the Salt River. This permit issued by the
United States Environmental
Protection Agency, places various requirements on the City
of Mesa. One of these requirements is the establishment of a
Pretreatment Program. The Industrial Pretreatment Section (IPS)
fulfills this requirement. The main purpose of the IPS is to
ensure that the wastewater treatment plant is protected from
discharges that could "bypass" or "pass through" the plant, and
affect the water quality of a "normally flowing" Salt River.
In addition to the NPDES
Arizona Department of Environmental Quality has issued an
Aquifer Protection Permit (APP) to Mesa. An APP regulates the
discharges from the wastewater treatment plant, and ensures that
Mesa is in compliance with Water Quality Standards.
As mandated by these permits, IPS
must monitor and regulate the "process wastewater" discharges of
any non-domestic user connected to Mesa's wastewater collection
system. IPS accomplished the mandate by issuing "discharge"
permits to facilities that meet pre-determined criteria. This
criteria is defined in the Code of Federal Regulations,
Title 40, Part 403, and
City Code Title 8, Chapter 4.
IPS strives to build productive
partnerships with industry and the community. IPS has set a
goal to achieve compliance through education rather than
over-regulation. A major component of these partnerships is
pollution prevention. Pollution prevention provides
opportunities to industries in methods to re-use or eliminate
pollutants that may be discharged into the environment. IPS has
developed a partnership with the Arizona Department of
Pollution Prevention Unit.