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n <br />_IX_ <br />with the effluent limitation guidelines constitutes compliance <br />with BAT and BCT for the specified pollutants and must be met to <br />comply with this General Permit. <br />For storm water discharges from facilities not among the ten <br />industrial categories listed in 40 CFR. Su5chapter N, it is not <br />feasible at this time to establish numeric effluent limitations. <br />The reasons why establishment of numeric effluent limitations is <br />not feasible are discussed in detail in State Water Board Orders <br />Go. WQ 91-03 and WD 91-04. Therefore, this General Permit allows <br />the facility operator to implement best management practices <br />(BMPs) to comply with the requirements of this General Permit. <br />This approach is consistent with the U.S. EPA's August 1, 1996 <br />"Interim Permitting Approach for Water Quality Based Effluent <br />Limitations in Storm Water Permits". <br />Receiving Water Limitations <br />Storm water discharges <br />shall not cause or conLr Bute to a <br />violation of an applicable water: quality standard. The General <br />Permit requires facility operators to reduce oLprevent <br />pollutants in storm water discharges and authorized cion -storm <br />water discharges through the development and implementation of <br />BMPs which constitutes compliance with BAT and BCT and, in most <br />cases, compliance with water quality standards. If receiving <br />water quality standards are exceeded, facility operators are <br />required to submit a written report providing additional EMPs <br />that will be implemented to achieve water quality standards. <br />Storm Water Pollution Prevention Plans (SWPPPs) <br />All facility operators must prepare, retain on site, and <br />implement an SWPPP. The SNPPP has two major objectives: (1) to <br />help identify the sources of pollution that affect the quality of <br />industrial storm water discharges and authorized non -storm water <br />discharges, and (2) to describe and ensure the implementation of <br />BMPs to reduce or prevent pollutants in industrial storm water <br />discharges and authorized non -storm water discharges. <br />This General Permit requires development and implementation of an <br />SWPPP emphasizing BMPs. This approach provides the flexibility <br />necessary to establish appropriate BMPs for different- types of <br />industrial activities and pollutant sources. As this General <br />Permit covers vastly different types of facilities, the State <br />Water Board recognizes that there is no single best way of <br />411 developing or organizing an SWPPP. The SWPPP requirements <br />contain the essential elements that all facility operators must <br />consider and address in the SWPPP. This General Permit's SWPPP <br />requirements are more detailed than the previous general permit's <br />