Illinois General Assembly - Full Text of HB3657
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Full Text of HB3657  99th General Assembly




State of Illinois
2015 and 2016


Introduced , by Rep. Christine Winger


620 ILCS 35/5  from Ch. 15 1/2, par. 755
620 ILCS 35/15  from Ch. 15 1/2, par. 765

    Amends the Permanent Noise Monitoring Act. Deletes the definition of "Ldn". Defines "Annual community noise equivalent level" or " annual CNEL", "daily community noise equivalent level" or "CNEL", "noise exposure level", and "noise level". Requires permanent noise monitoring reports to include noise contour maps showing the 65 CNEL, 70 CNEL, and 75 CNEL zones (instead of "65 Ldn, 70 Ldn and 75 Ldn zones") around the airport. Makes corresponding changes.

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HB3657LRB099 08667 MRW 28833 b

1    AN ACT concerning transportation.
2    Be it enacted by the People of the State of Illinois,
3represented in the General Assembly:
4    Section 5. The Permanent Noise Monitoring Act is amended by
5changing Sections 5 and 15 as follows:
6    (620 ILCS 35/5)  (from Ch. 15 1/2, par. 755)
7    Sec. 5. Definitions. As used in this Act:
8    (a) "Airport" means an airport, as defined in Section 6 of
9the Illinois Aeronautics Act, that has more than 500,000
10aircraft operations (take-offs and landings) per year.
11    (a-1) "Airport sponsor" means any municipality, as defined
12in Section 20 of the Illinois Aeronautics Act, that can own and
13operate an airport.
14    (a-3) "Annual community noise equivalent level" or "annual
15CNEL" means the average sound level (on an energy basis), in
16decibels, of the daily community noise equivalent level over a
1712-month period. The annual CNEL is calculated by the
Annual CNEL = 10 log 10 [(1/365) SIGMA antilog (CNEL(i)/10)]

21        (1) CNEL(i) = the daily CNEL for each day in a



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1    continuous 12-month period; and
2        (2) SIGMA means summation.
3    When the annual CNEL is approximated by measurements on a
4statistical basis, the number 365 is replaced by the number of
5days for which measurements are obtained.
6    (a-5) "Daily community noise equivalent level" or "CNEL"
7means the 24-hour day average sound level, in decibels,
8adjusted to an equivalent level to account for the lower
9tolerance of people to noise during evening and night time
10periods relative to the daytime period. The daily community
11noise equivalent level is calculated from the hourly noise
12levels by the following:
CNEL = 10 log (1/24) [SIGMA antilog (HNLD/10) + 3 SIGMA antilog
(HNLE/10) + 10 SIGMA antilog (HNLN/10)]

16        (1) HNLD means the hourly noise levels for the period
17    7:00 a.m. through 6:59 p.m.;
18        (2) HNLE means the hourly noise levels for the period
19    7:00 p.m. through 9:59 p.m.;
20        (3) HNLN means the hourly noise levels for the period
21    10:00 p.m. through 6:59 a.m.; and
22        (4) SIGMA means summation.
23    (a-8) "Noise exposure level" means the level, in decibels,
24of the time-integrated A-weighted squared sound pressure for a



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1stated time interval or event, based on the reference pressure
2of 20 micronewtons per square meter and reference duration of
3one second.
4    (a-9) "Noise level" means the sound level measure, in
5decibels, of an A-weighted sound pressure level as measured
6using the slow dynamic characteristic for sound level meters
7specified in American National Standard Specification for
8Sound Level Meters (ANSI S1.4-1983 as revised by ANSI
9S1.4A-1985), which is hereby incorporated by reference. The
10A-weighting characteristic modifies the frequency response of
11the measuring instrument to account approximately for the
12frequency characteristics of the human ear. The reference
13pressure is 20 micronewtons/square meter (2 x 10-4 microbar).
14    (b) "Permanent noise monitoring system" or "system" means a
15system that includes at least:
16        (1) automated noise monitors capable of recording
17    noise levels 24 hours per day 365 days per year; and
18        (2) computer equipment sufficient to process the data
19    from each noise monitor so that permanent noise monitoring
20    reports in accordance with Section 15 of this Act can be
21    generated.
22    (c) "Division" means the Division of Aeronautics of the
23Illinois Department of Transportation.
24    (d) (Blank). "Ldn" means day-night average sound level.
25"Day-night average sound level" has the meaning ascribed to it
26in Section 150.7 of Part 150 of Title 14 of the Code of Federal



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2(Source: P.A. 96-37, eff. 7-13-09.)
3    (620 ILCS 35/15)  (from Ch. 15 1/2, par. 765)
4    Sec. 15. Permanent noise monitoring reports. Beginning in
51993 and through 2008, the Division shall, on June 30th and
6December 31st of each year, prepare a permanent noise
7monitoring report and make the report available to the public.
8Beginning in 2009, the airport sponsor shall, on June 30th and
9December 31st of each year, prepare a permanent noise
10monitoring report and make the report available to the public.
11Copies of the report shall be submitted to: the Office of the
12Governor; the Office of the President of the Senate; the Office
13of the Senate Minority Leader; the Office of the Speaker of the
14House; the Office of the House Minority Leader; the United
15States Environmental Protection Agency, Region V; and the
16Illinois Environmental Protection Agency. Beginning in 2009, a
17copy of the report shall also be submitted to the division. The
18permanent noise monitoring report shall contain all of the
20    (a) Copies of the actual data collected by each permanent
21noise monitor in the system.
22    (b) A summary of the data collected by each permanent noise
23monitor in the system, showing the data organized by:
24        (1) day of the week;
25        (2) time of day;



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1        (3) week of the year;
2        (4) type of aircraft; and
3        (5) the single highest noise event recorded at each
4    monitor.
5    (c) Noise contour maps showing the 65 annual CNEL Ldn, 70
6annual CNEL Ldn and 75 annual CNEL Ldn zones around the
8    (d) Noise contour maps showing the 65 decibel (dBA), 70
9dBA, and 75 dBA zones around the airport for:
10        (1) 7:00 a.m. through 6:59 to 10:00 p.m.;
11        (1.5) 7:00 p.m. through 9:59 p.m.;
12        (2) 10:00 p.m. through 6:59 to 7:00 a.m.; and
13        (3) types of aircraft.
14    (e) The noise contour maps produced under subsections (c)
15and (d) shall also indicate:
16        (1) residential areas (single and multi-family);
17        (2) schools;
18        (3) hospitals and nursing homes;
19        (4) recreational areas, including but not limited to
20    parks and forest preserves;
21        (5) commercial areas;
22        (6) industrial areas;
23        (7) the boundary of the airport;
24        (8) the number of residences (single and multi-family)
25    within each contour;
26        (9) the number of residents within each contour;



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1        (10) the number of schools within each contour; and
2        (11) the number of school students within each contour.
3    (f) Through 2008, a certification by the Division that the
4system was in proper working order during the period or, if it
5was not, a specific description of any and all problems with
6the System during the period.
7    (g) Beginning in 2009, a certification by the airport
8sponsor that the system was in proper working order during the
9period or, if it was not, a specific description of any and all
10problems with the system during the period.
11(Source: P.A. 96-37, eff. 7-13-09.)