STUDY INPUTCOMMITTEE MEETING F

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Agenda. IntroductionBackground on Noise (Chapter C)Summary of AIAS Forecasts (Chapter B)Supplemental Metrics Summary (Chapter

D)Draft Existing and Future Noise Contours

(Chapter D)Land Use/Population Analysis (Chapter E)Questions/Comments

Purpose of Study. The Study identifies and evaluates two

components: Aircraft noise and land use, both existing and future.

The Study consists of two distinct, but complementary elements: Noise Exposure Maps and a Noise Compatibility Program.

The Noise Exposure Maps (NEMs) are accepted by the Federal Aviation Administration.

Noise Compatibility Program is approved by FAA.

Study Process.

Forecasts

YearPassenge

r Cargo

Air Taxi and

OtherGeneral Aviation Military Total

2009            

ANC 91,092 65,014 2,280 35,685 4,385 198,456

LHD - - 12,291 45,885 - 58,176

Combined

91,092 65,014 14,571 81,570 4,385 256,632

             

2020            

ANC 101,540 95,812 2,793 39,863 2,267 242,275

LHD - - 15,793 49,667 - 65,460

Combined

101,540 95,812 18,586 89,530 2,267 307,735

2030

ANC 111,212 118,714 2,036 47,713 2,267 281,942

LHD - - 18,902 59,446 - 78,348

Combined

111,212 118,714 20,938 107,159 2,267 360,290

Noise Metrics.Single Event Metrics

Maximum Noise Level (Lmax) Sound Exposure Level (SEL)

Cumulative Noise Metrics LEQ Noise Level LEQ is generally a 1 hour equivalent, but may be

other such as 15 minute or 24 hour

Cumulative Daily Noise Metrics DNL Noise Level Built from SEL and LEQ noise

Single Event MetricsLmax

Highest noise event level reached during a noise event

Aircraft noise rises above ambient noise, then decreases until sound levels settle to ambient levels

SEL Good method to describe single noise events SEL combines Lmax and duration and is calculated

when the sound is within 10 dB of the maximum, and then normalized to a sound level that would have the same energy but with a duration of 1 second.

Single Event MetricsFlow DNL

The 24 hour weighted average noise level on a day when flow is in one specific direction. It is a one day DNL, i.e., the DNL on a day with that flow direction.

Time Above Minutes per day that noise level exceeds stated noise

level (annual average).

Number Above The number of times per day that the maximum noise

level of a flyover exceeds a stated noise level, usually 70 dBA (annual average).

Cumulative MetricsLEQ

Equivalent Noise Level “Energy” average taken from the sum of all sound

that occurs during a certain period of time (generally one hour)

Day Night Noise Level (DNL) Average noise experienced in a 24 hour day Nighttime operations (10 p.m. to 7 a.m.) weighted

by 10 dB Metric used by FAA to identify land use

compatibility

Noise Metrics

DNL East Flow

DNL West Flow

SEL 747/ 737 East Comparison

Note: Percentages are the percent of time that aircraft are in that direction flow. Figure represent takeoff SEL and approach SEL and are shown together here for simplicity; technically 2 events are shown.

SEL 747/737 West Comparison

Note: Percentages are the percent of time that aircraft are in that direction flow. Figure represent takeoff SEL and approach SEL and are shown together here for simplicity; technically 2 events are shown.

SEL 747/737 South Comparison

Note: Percentages are the percent of time that aircraft are in that direction flow. Figure represent takeoff SEL and approach SEL and are shown together here for simplicity; technically 2 events are shown.

SEL Beaver East

Note: Percentages are the percent of time that aircraft are in that direction flow. Figure represent takeoff SEL and approach SEL and are shown together here for simplicity; technically 2 events are shown.

Time Above 65 dBA in Minutes

Number Above 70 dBA

Ground Run Up Lmax

Supplemental Metrics SummaryThe existing preferential use program is most

effective noise control program used currently at ANC

When winds, airfield maintenance, or traffic require that non-preferential runway flow is used, noise levels in the community are increased significantly compared to normal use

Summer Lake Hood operations increase number of flyover events and noise levels compared to winter operations and annual averages

INM Fixed Wing Departure ANC

INM Fixed Wing Arrival ANC

INM Fixed Wing Departure LHD

INM Fixed Wing Arrival LHD

INM Helicopter (Departure/Arrival)

2009 Draft Noise Contours

2020 Draft Noise Contours

2030 Draft Noise Contours

Existing Land Use - 2009Land Use 60 DNL 65 DNL 70 DNL 75 DNL

Residential Acres 36.7  0.2 0 0

Persons 595 2 0 0

Housing Units 239 1 0 0

Schools 1 0 0 0

Religious Facilities

 0  0 0  0

Historic Properties

0 0 0 0

Vacant 11.7 0.1 0 0

Commercial 22.3 5.7 0 0

Industrial 270.2 161.6 67.5 0

Institutional 14.2 0.5 0 0

Open Space/Park 345.5 83.4 42.6 2.1

On Airport 153.6 60.4 36.6 1.7

Off Airport 191.9 23.0 6.0 0.4

Transportation 2,798.3 1,779.6 1,100.0 575.2

Other/ROW 6,819.4 1,911.2 425.0 172.8Total Land Use Acres

10,318.3 3,942.3 1,636.0 750.1

Future Land Use - 2020Land Use 60 DNL 65 DNL 70 DNL 75 DNL

Residential Acres 71.9 0.4 0 0

Persons 814 8 0 0

Housing Units 322 3 0 0

Schools 1 0 0 0

Religious Facilities

 0  0 0  0

Historic Properties

0 0 0 0

Vacant 33.1 0.2 0 0

Commercial 37.4 6.6 0 0

Industrial 348.1 182.7 100.8 6.2

Institutional 37.3 0.6 0 0

Open Space/Park 546.7 118.7 47.7 7.8

On Airport 173.8 79.3 40.7 4.7

Off Airport 372.9 39.4 7.0 3.1

Transportation 3.073.8 2,002.2 1,242.7 692.4

Other/ROW 8,546.7 2,476.5 580.5 188.8Total Land Use Acres

12,694.9 4,787.5 1,971.7 895.2

2030 Land Use (For Info Only)Land Use 60 DNL 65 DNL 70 DNL 75 DNL

Residential Acres 120.7 2.4 0 0

Persons 1,227 36 0 0

Housing Units 506 15 0 0

Schools 1 0 0 0

Religious Facilities

 0  0 0  0

Historic Properties

0 0 0 0

Vacant 49.9 0.4 0 0

Commercial 58.3 7.4 0.6 0

Industrial 405.1 200.2 122.6 21.7

Institutional 48.8 1.3 0 0

Open Space/Park 714.4 145.2 52.9 21.2

On Airport 178.4 94.8 44.0 16.8

Off Airport 536.0 50.4 8.9 4.4

Transportation 3,266.6 2,199.4 1,379.6 813.6

Other/ROW 11,154.3 3,399.4 822.9 206.6Total Land Use Acres

15,818.1 5,955.6 2,378.6 1,063.1

Next StepsAlternatives DevelopmentAlternatives AnalysisPublic Input on AlternativesDevelopment of Recommendations

Comments and Additional Information.Mr. Ryk Dunkelberg

Barnard Dunkelberg & Company Cherry Street Building 1616 East 15th Street Tulsa, OK 74120 Phone Number. 918-585-8844 FAX Number. 918-585-8857

THANKYOU!

COMMENTS/QUESTIONS