Page:United States Statutes at Large Volume 101 Part 1.djvu/63

 PUBLIC LAW 100-4—FEB. 4, 1987 Control Act pending on the date of the enactment of this Act; except that the Administrator must approve or disapprove such application not later than 365 days after the date of such enactment.

101 STAT. 33

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SEC. 303. DISCHARGES INTO MARINE WATERS. (a) CONSIDERATION OF OTHER SOURCES OF POLLUTANTS.—Section

301(h)(2) is amended by striking out "such modified requirements 33 USC 1311. will not interfere" and inserting in lieu thereof the following: "the discharge of pollutants in accordance with such modified requirements will not interfere, alone or in combination with pollutants from other sources,". (b) LIMITATION ON SCOPE OF MONITORING.—

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(1) GENERAL RULE.—Section 301(h)(3) is amended by inserting before the semicolon at the end thereof the following: ", and the scope of such monitoring is limited to include only those scientific investigations which are necessary to study the effects of the proposed discharge". (2) LIMITATION ON APPLICABILITY.—The amendment made by subsection (b) shall only apply to modifications and renewals of modifications which are tentatively or finally approved after the date of the enactment of this Act.

' (c)

33 USC 1311 ^°^-

URBAN AREA PRETREATMENT PROGRAM.—Section 301(h) is

amended by redesignating paragraphs (6) and (7), and any references thereto, as paragraphs (7) and (8), respectively, and by inserting after paragraph (5) the following new paragraph: "(6) in the case of any treatment works serving a population of 50,000 or more, with respect to any toxic pollutant introduced into such works by an industrial discharger for which pollutant there is no applicable pretreatment requirement in effect, sources introducing waste into such works are in compliance with all applicable pretreatment requirements, the applicant will enforce such requirements, and the applicant has in effect a pretreatment program which, in combination with the treatment of discharges from such works, removes the same amount of such pollutant as would be removed if such works were to apply secondary treatment to discharges and if such works had no pretreatment program with respect to such pollutant;".

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(d) PRIMARY TREATMENT FOR EFFLUENT.— (1) GENERAL RULE.—Section 301(h) is amended by striking out

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the period at the end of paragraph (8) (as redesignated by subsection (c) of this section) and inserting in lieu thereof a semicolon and by inserting after such paragraph (8) the following new paragraph: "(9) the applicant at the time such modification becomes effective will be discharging effluent which has received at least primary or equivalent treatment and which meets the criteria established under section 304(a)(1) of this Act after initial mixing in the waters surrounding or adjacent to the point at which such effluent is discharged.". (2) PRIMARY OR EQUIVALENT TREATMENT DEFINED.—Such section is further amended by inserting after the second sentence the following new sentence: "For the purposes of paragraph (9), 'primary or equivalent treatment' means treatment by screening, sedimentation, and skimming adequate to remove at least 30 percent of the biological oxygen demanding material and of

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33 USC 1314.

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