Page:United States Statutes at Large Volume 101 Part 1.djvu/99

 PUBLIC LAW 100-4—FEB. 4, 1987

101 STAT. 69

not being attained is removed in accordance with regulations established under this section. "(B) STANDARD ATTAINED.—For waters identified under paragraph (1)(A) where the quality of such waters equals or "' " exceeds levels necessary to protect the designated use for -' such waters or otherwise required by applicable water quality standards, any effluent limitation based on a total maximum daily load or other waste load allocation established under this section, or any water quality standard established under this section, or any other permitting standard may be revised only if such revision is subject to and consistent with the antidegradation policy established under this section.". (c) STUDY.—The Administrator shall study— 33 USC 1375 (1) the extent to which States have reviewed, revised, and note. State and local adopted water quality standards in accordance with section 24 governments. of the Municipal Wastewater Treatment Construction Grant Amendments of 1981; and 33 USC 1313a. (2) the extent to which modifications of permits issued under section 402(a)(1)(B) of the Federal Water Pollution Control Act 33 USC 1342. for the purpose of reflecting any revisions to water quality standards should be encouraged or discouraged. The Administrator shall submit a report on such study, together Reports. with recommendations, to Congress not later than 2 years after the date of the enactment of this Act. (d) CONFORMING AMENDMENT.—Section 402(a)(1) is amended by

33 USC 1342.

inserting "(A)" after "either" and by inserting "(B)" after "this Act, or". SEC. 405. MUNICIPAL AND INDUSTRIAL STORMWATER DISCHARGES.

Section 402 is amended by adding at the end thereof the following new subsection: "(p) MUNICIPAL AND INDUSTRIAL STORMWATER DISCHARGES.—

"(1) GENERAL RULE.—Prior to October 1, 1992, the Administrator or the State (in the case of a permit program approved under section 402 of this Act) shall not require a permit under this section for discharges composed entirely of stormwater. "(2) EXCEPTIONS.—Paragraph (1) shall not apply with respect to the following stormwater discharges: "(A) A discharge with respect to which a permit has been '** ' ' issued under this section before the date of the enactment ^ of this subsection. f ' ^ "(B) A discharge associated with industrial activity. "(C) A discharge from a municipal separate storm sewer system serving a population of 250,000 or more. "(D) A discharge from a municipal separate storm sewer system serving a population of 100,000 or more but less

, than 250,000. "(E) A discharge for which the Administrator or the State, as the case may be, determines that the stormwater discharge contributes to a violation of a water quality standard or is a significant contributor of pollutants to waters of the United States. ''

"(3) PERMIT REQUIREMENTS.— "(A) INDUSTRIAL DISCHARGES.—Permits

State and local governments.

for discharges associated with industrial activity shall meet all applicable provisions of this section and section 301. 33 USC 1311.

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