ILLINOIS POLLUTION CONTROL BOARD
    February
    14
    ,
    1975
    IN THE MATTER OF
    PROPOSED AMBIENT AIR
    QUALITY STANDARDS FOR
    )
    R72-7
    SULFUR
    DIOXIDE
    ORDER
    OF THE BOARD
    (by Mr. Dumelle):
    The
    Illinois
    Pollution
    Control
    Board
    (Board)
    hereby
    proposes for final comment the following sulfur dioxide
    ambient air quality standard as an amendment to the Air
    Pollution
    Regulations.
    Rule
    308:
    Sulfur Oxide
    (Sulfur Dioxide)
    (a)
    Primary Standards.
    The primary ambient air quality
    standards for sulfur oxides measured as sulfur dioxide
    are:
    (A)
    an annual arithmetic mean concentration of 80
    micrograms per cubic meter
    (0.03 ppm)
    ;
    and
    (B)
    a maximum
    24—hour concentration not to be exceeded more than once
    per year of
    365 micrograms per cubic meter
    (0.14 ppm).
    (b)
    Secondary Standard.
    The secondary ambient air
    quality standard for sulfur oxides measured as sulfur
    dioxide is
    a maximum 3—hour concentration not to be
    exceeded more than once per year of 1,300 micrograms
    per cubic meter
    (0.5 ppm).
    (c)
    Measurement Period.
    For determining conformance
    with sulfur oxide air quality standards, sulfur oxides
    shall be measured as sulfur dioxide by the pararosanilinie
    method as described in 40 CFR Part 50, National Primary
    and Secondary Ambient Air Quality Standards, Appendix
    A,
    or by an equivalent method of proof approved by the
    Agency.
    This amendment was originally contained in the Board
    proposal for the adoption of air quality standards which was
    published in Newsletter #47 on May
    8,
    1972.
    The Board
    conducted hearings on June 15, 1972
    in Chicago and June 16,
    1972 in Granite City on the proposal.
    On May
    3,
    1973 the
    Board enacted the air quality standards with the exception
    of Rule 308: Sulfur Oxide which was again proposed for final
    comment.
    This modified proposal was published in Newsletter
    #65 on May 17,
    1973.
    This modified proposal contained a
    tighter standard applicable in the Chicago and St. Louis
    major metropolitan areas.
    Since the original hearings on
    15
    —
    547
    the ambient air quality standards, R72-7, the Board has held
    exhaustive inquiry hearings on sulfur dioxide removal technology,
    R74-2.
    The Board hereby incorporates the following portions
    of the record produced in R74-2, which dealt with health
    aspects of sulfur dioxide, within the record of R72—7:
    Testimony of Dr. John Finklea,
    R.
    8 to
    85,
    Exhibits
    1,
    2 and
    3;
    Testimony of Gary Patzlaff,
    R.
    114 to 178;
    Testimony of F. Frazer Ross,
    R.
    1746
    to 1852;
    Exhibits 79 through
    87;
    Testimony of Dr. Peter K. Mueller,
    R.
    1852 to 1898;
    Exhibit 88;
    and
    Testimony of Dr. Bertram Carnow,
    R.
    2061 to 2126;
    Exhibits 96,
    97, and 98.
    The proposal in its present form is identical with the
    federal ambient air quality standards pertaining
    to sulfur
    dioxide which appear at 40 CFR Part 50.4 and 50.5.
    They
    differ from that published in Newsletter #65 in that the
    Board has decided to delete the proposed secondary annual
    ambient air quality standard and the alternate standards
    applicable
    in the Chicago and East St. Louis major metropolitan
    areas.
    The deletion of the secondary ambient air quality
    standard is consistent with the revision of
    40 CFR Part 50.5
    which revoked the federal secondary annual ambient air
    quality standard for sulfur dioxide
    (30 F.R.
    178, pages
    25678
    through 81
    (September 14, 1973)).
    The public comment period on this proposed amendment to
    the Air Pollution Regulations shall extent until March 31,
    1975.
    It is not anticipated at this time that additional
    hearings will be necessary prior to the adoption of this
    proposal.
    IT
    IS SO
    ORDERED.
    I, Christan
    L. Moffett, Clerk of the Illinois Pollution
    Control Board, hereby certify the above Order was adopted on the
    ~44\
    day of February,
    1975 by a vote of
    4-o
    Illinois Pollution
    Board

    Back to top