ILLINOIS POLLUTION CONTROL BOARD
    May
    14, 1981
    In The Matter Of:
    R80—9
    Proposed Amendment to the Noise Regulations,
    )
    R80-10
    Rules 101,
    206,
    208 and 209
    ADOPTED RULE.
    FINAL ORDER.
    FINAL ORDER OF THE
    BOARD
    (by J. Anderson):
    The Board hereby adopts the following amendments to Chapter
    8:
    Noise.
    In response to suggestions made by the Joint Committee
    on Administrative Rules
    (JCAR) during the second notice period,
    certain changes have been made.
    JCAR suggested deletions have
    been interlined, and additions underlined.
    The JCAR has stated
    that it has no objections to these rules.
    The Clerk is directed
    to file these final rules with the Secretary of State,
    to become
    effective June 1,
    1981.
    Chapter
    8:
    Noise
    Rule 101:
    Definitions
    Impulsive sound:
    either a single pressure peak or a
    single burst
    (multiple pressure peaks)
    for a duration
    usually less than one second.
    Examples of impulsive
    sound sources are a drop forge hammer and explosive
    blasting.
    Slow Dynamic Characteristic:
    The dynamic character-
    istic specified as
    “Slow”
    in ANSI document Si.4—1971
    (R1976)
    “Specification for Sound Level Meters”r er
    ee—~ev~s4ei’te.
    C-weighted Sound Level:
    In decibels,
    a frequency
    weighted sound pressure
    level, determined by the use
    of the metering characteristic and C—weighted network
    specified in ANSI document S1.4—1971
    (R1976)
    “Specifi-
    cation for Sound Level ~
    Fast Dynamic Characteristic:
    The dynamic characteristic
    specified as “Fast” in ANSI S1.4—1971
    (R1976) “Specifi-
    cation for Sound Level ~
    4
    1—449
    Rule 208:
    Exceptions
    (a)—(g)
    No change.
    (h)
    Rule 206 shall not apply to impulsive sound produced
    by explosive blasting activities conducted on any
    Class C land used as specified by SLUCM codes
    852
    and
    854, but such operations
    shall be governed by
    Rule 210.
    Rule 209:
    Compliance Dates For Part
    2
    (a)—(e)
    No change.
    Deleted
    (g)—(j)
    No change.
    Rule 210:
    Impulsive Sound from Explosive Blasting
    (a)
    During the daytime hours,
    after sunrise and before
    sunset,
    no person shall cause or allow any explo-
    sive blasting conducted on any Class C land used
    as specified by SLUCM codes 852 and
    854 so as to
    allow the emission of sound to any receiving Class
    A or B land which exceeds the allowable outdoor
    C—weighted sound levels, measured with the slow
    dynamic characteristic,
    specified in Table
    6, when
    measured at any point of interference with the use
    of w~h4~such receiving ClassA or B
    land.
    TABLE
    6
    Allowable Outdoor C-weighted Sound
    Levels in Decibels of Explosive Blasting Sounds
    Emitted to Receiving Class A or B Land from any Class C
    Land Used as Specified by SLUCM Code 852 or 854
    Receiving Class A Land
    Receiving Class B Land
    109
    114
    Compliance with outdoor peak sound pressure level
    limits
    in Table
    7 shall constitute prima facie
    evidence of compliance with the C—weighted sound
    level limits of Rule 210 when measured on such
    receiving Class A or B
    land.
    TABLE
    7
    Equivalent Maximum
    Sound Pressure Level
    (Peak) Limits in Decibels
    4 1—450
    Lower frequency limit
    Receiving Class A
    Receiving Cla~
    r~
    of measuring system for flat
    Land
    Land
    response,
    a variation from
    linear response of ±3dB
    (Hz)
    (dB)
    (dB)
    ~0.1
    135
    140
    ~2.0 but 0.1
    132
    137
    ~6.0 but 2.0
    130
    135
    (b)
    During the nighttime hours, after sunset and before
    sunrise, the allowable sound level limits
    in Tables
    6 and
    7 shall be reduced by 10 decibels except in
    emergency situations where
    rain,
    lightning,
    other
    atmospheric conditions, or operator or public safety
    requires unscheduled nighttime hour explosive
    blasting.
    (c)
    Persons causing or allowing explosive blasting to
    be conducted on any Class
    C
    land used as specified
    by SLUCM code 852 or 854 shall notify the local
    public of such blasting prior
    to its occurrence,
    except when emergency situations require unscheduled
    blasting, by publication of a blasting schedule,
    identifying
    the work days or dates and time periods
    when explosives are expected to he detonated,
    at
    least every three months
    in a newspaper of general
    circulation in the locality of the blase site.
    IT IS SO ORDERED.
    I, Christan L. Moffett, Clerk of the Illinois Pollution
    Control
    Board,
    hereby
    certify
    that
    the
    above
    Order
    was pdopter~
    on
    the
    “4~’
    day
    of
    ___________,
    1981
    by
    a
    vote
    of
    ~c:
    ~
    Christan L.
    Moffett;, ~Clerk
    tilinois
    Pollution.
    1~ôntrol
    Bo;ir
    41—451

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