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Environmental and Health
Storm water discharges must obtain permits prior to October 1,
1992, if:
• An NPDES permit was issued prior to February 4, 1987.
• The discharge is due to industrial activity.
• The discharge is from a municipal separate storm sewer system
serving a population of 250,000 or more.
• The discharge if from a municipal separate storm sewer system
serving a population of 100,000 or more but less than 250,000.
• The EPA Administrator or the state considers it violates a federal
or state water quality standard, or it is a "significant contributor"
of pollutants to U.S. waters.
Industrial Storm Water Dischargers
Industries that have current NPDES permits for the discharge of storm
water from their properties are regulated by the current permit.
Industries without a current NPDES permit for uncontaminated point
source storm water discharges must obtain in NPDES permit. EPA was
empowered to establish permit application requirements for such
discharges by February 1989. Permit applications must have been filed
by February 1990; by February 1991, EPA or the appropriate state
regulatory agency must have acted on each permit application. Large
municipal storm water dischargers (those serving populations in excess
of 250,000) must adhere to the above schedule. Small municipal storm
water dischargers
(those serving populations between 100,000 and
250,000) are required to await EPA's permitting requirements have been
developed by February 1991. Following the promulgation of permitting
requirements,
these permit applications must be filed no later than
February 1993. All NPDES permit applicants must comply with permit
provisions within three years of permit issuance. Finally, NPDES storm
water permits issued to municipalities must contain a prohibition against
discharging anything but storm water into the storm sewers.
Industry-Specific Minimum National Effluent Standards
The majority of industry's hazardous wastes are in liquid form. The
treatment of industrial effluent requires dewatering, and frequently
secondary wastewater treatment, before the treated effluent can be
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