Notice of Availability of National Pollutant Discharge Elimination System (NPDES) Storm Water General Permit for Small MS4s

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The Regional Administrator, EPA, Region 9 is proposing to issue an NPDES general permit for storm water discharges from small municipal separate storm sewer systems (MS4s) located in the geographic areas of Region 9 where the NPDES permit program has not been delegated. These areas include the State of Arizona (including Indian lands), Indian lands in the States of California and Nevada, and the U.S. Pacific Island territories. For the State of Arizona (excluding Indian Country lands), the general permit is being proposed jointly by Region 9 and the Director of the Arizona Department of Environmental Quality (ADEQ). NPDES permit coverage for these discharges is required in accordance with the 1987 Amendments to the Clean Water Act (CWA), and final EPA regulations for Phase II storm water discharges (64 FR 68722, December 8, 1999). This Notice announces the availability of the proposed general permit and fact sheet for public comment.