110 STAT. 1628
PUBLIC LAW 104-182—AUG. 6, 1996
State and local governments, and other interested public and private entities.
"(iv) PROPOSED REGULATIONS. —The Administrator
shall propose a national primary drinking water regulation for arsenic not later than January 1, 2000.
"(v) FINAL REGULATIONS.—Not later than January
1, 2001, after notice and opportunity for public comment, the Administrator shall promulgate a national
primary drinking water regulation for arsenic.
"(vi) AUTHORIZATION. —There are authorized to be
appropriated $2,500,000 for each of fiscal years 1997
through 2000 for the studies required by this paragraph.
"(B) SULFATE.—
"(i) ADDITIONAL STUDY. —Prior to promulgating a
national primary drinking water regulation for sulfate,
the Administrator and the Director of the Centers for
Disease Control and Prevention shall jointly conduct
an additional study to establish a reliable doseresponse relationship for the adverse human health
effects that may result from exposure to sulfate in
drinking water, including the health effects that may
be experienced by groups within the general population
(including infants and travelers) that are potentially
at greater risk of adverse health effects as the result
of such exposure. The study shall be conducted in
consultation with interested States, shall be based on
the best available, peer-reviewed science and supporting studies conducted in accordance with sound and
objective scientific practices, and shall be completed
not later than 30 months after the date of enactment
of the Safe Drinking Water Act Amendments of 1996.
" (ii) DETERMINATION.— The Administrator shall include
sulfate among the 5 or more contaminants for which a
determination is made pursuant to paragraph (3)(B) not
later than 5 years sifter the date of enactment of the
Safe Drinking Water Act Amendments of 1996.
"(iii) PROPOSED AND FINAL RULE. —-Notwithstanding the
deadlines set forth in paragraph (2), the Administrator
may, pursuant to the authorities of this subsection and
after notice and opportunity for public comment, promulgate a final national primary drinking water regulation
for sulfate. Any such regulation shall include requirements
for public notification and options for the provision of alternative water supplies to populations at risk as a means
of complying with the regulation in lieu of a best available
treatment technology or other means.",
(b) RADON. —Section 1412(b) (42 U.S.C. 300g-l(b)) is amended
by inserting after paragraph (12) the following:
"(13) RADON IN DRINKING WATER.—
" (A) NATIONAL PRIMARY DRINKING WATER REGULA-
TION.— Notwithstanding paragraph (2), the Administrator
shall withdraw any national primary drinking water regulation for radon proposed prior to the date of enactment
of this paragraph and shall propose and promulgate a
regulation for radon under this section, as amended by
the Safe Drinking Water Act Amendments of 1996.
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