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Phase II Storm Water      Management

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Phase II

What is Phase II?

The United States Government’s establishment of the Clean Water Act was designed to improve the quality of our nation’s water. In 1972 the National Pollutant Discharge Elimination System (NPDES) was established followed by the implementation of Phase I storm water management in 1990. Phase I requires that municipalities with populations greater than 100,000 people and construction sites disturbing over 5 acres must submit and gain storm water permits from NPDES. Currently there are six Phase I communities in North
Carolina.

Phase II broadens the cover of Phase I regulating storm water from:

  • municipal separate storm sewer systems (MS4s) located in urbanized areas with populations over 50,000 people or an overall population density of 1,000 people per square miles
  • any construction site with a disturbance between 1 and 5 acres
  • specified small MS4s located outside of urbanized areas

Who is Affected?

Cities in Haw River Watershed Effected by Phase II

  • Burlington
  • Carrboro
  • Chapel Hill
  • Elon
  • Gibsonville
  • Graham
  • Haw River
  • Mebane
  • Reidsville

Map of Cities effected by Phase II

Counties in Haw River Watershed Effected By Phase II

  • Alamance
  • Forsyth
  • Guilford
  • Orange

What Does Phase II Mean For Residents?

Due to the fact that Phase II is NPDES regulated there is no funding provided by state and federal agencies to help implement necessary programs to limit storm water runoff. As a result residents of cities and counties affected have to pay either flat taxes or utility fees to provide for the implementation of storm water management programs.

Taxes are a flat rate and are generally very low while still providing adequate funding for preliminary storm water management. These flat rates generally range between $2 and $3 per month dependent upon the city or county which you live.

Utility fees are based upon the impervious surface located on a piece of property. To determine the rate at which residents or businesses should be charged an Equivalent Resident Unit (ERU) must be determined. The ERU is the amount of impervious surface on a typical residential property. For every ERU present on a piece of property a utility rate is dictated. Again the charge of each ERU is determined by cities and counties but will range between $2 and $4.

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