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Under the Storm Water Phase II Final Rule, construction activity disturbing equal to or greater than one acre and less than five acres of land is subject to NPDES permitting requirements. Construction activity disturbing less than one acre requires a permit if it is part of a larger common plan of development or sale disturbing a total of one acre or greater, or is individually designated for permit coverage by the NPDES permitting authority. The NPDES Storm Water Program currently addresses storm water discharges from construction sites disturbing five acres or greater (as well as sites less than five acres if they are part of a larger common plan of development or sale disturbing a total of five acres or greater). IMPORTANT: Note that permit applications from operators of constructions activities disturbing less than five acres will not be due until 2002/early 2003. Contact your Permitting Authority for the exact date. Key questions addressed here include:
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What Is Required Of Phase II Construction Operators Under The Final Rule?The Phase II Final Rule requires, nationally, operators of Phase II construction sites to obtain an NPDES permit and implement best management practices (BMPs) to minimize pollutant runoff. [It is important to note that, locally, these same sites may also be covered by State, Tribal, or local construction runoff control programs.] For the Phase II construction program, EPA has taken an approach similar to the current Phase I approach where the program requirements are not fully defined in the rule but rather in the NPDES storm water permit issued by the NPDES permitting authority. EPA recommends that the NPDES permitting authorities use their existing NPDES storm water general permits for construction as a guide in developing their Phase II construction permits. In doing so, the Phase II requirements will be similar to the following three main requirements of EPA's Construction General Permits:
What Waivers Are Available for Phase II Construction Activity?Under the Phase II Final Rule, NPDES permitting authorities have the option of providing a waiver from the requirements to operators of Phase II construction activity who could certify to one of two conditions:
Note: Waivers are not available for any construction activity disturbing 5 acres or greater, or less than 5 acres if part of a common plan of development or sale (or if designated for permit coverage by the NPDES permitting authority).
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