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38 A P P E N D I X F Risk Matrix
RISK MATRIX FREQUENT PROBABLE REMOTE EXTREMELY REMOTE IMPROBABLE 5 4 3 2 1 daily to weekly sightings (year round) daily to weekly sightings (seasonal only) weekly to monthly sightings weekly to monthly sightings (seasonal only) annual sightings History of Observations on the runway or RPZ in flight on the runway on the ground on the AOA within airport property off airport property Proximity of Bird Sightings >75% 50-75% 10-50% 5-10% <5% Percentage of Total Airport Bird Strikes Associated with Species > 2 SD above national average Between 1 and 2 SD above national average Within 1 SD of national average Between 1 and 2 SD below national average < 2 SD below national average History of Total Bird Strikes per Operations Compared to National Average AOA <5000 ft 5000 - 10,000 ft 10,000 ft - 5 mi > 5 miles Proximity of BMP to Airport Movement Areas NEGLIGIBLE 1 1 < 12 Irregularity <= 1.1 1:1 None within 5 mi 100% 5.0 4.0 3.0 2.0 1.0 MINOR 2 2 > 12 < 24 1.1 < Irregularity <= 2.8 2:1 3.75 - 5 mi 0% 10.0 8.0 6.0 4.0 2.0 MAJOR 3 3 > 24 < 36 2.8 < Irregularity <= 4.6 3:1 2.5 - 3.75 mi less than 16.5% OR greater than 83% 15.0 12.0 9.0 6.0 3.0 HAZARDOUS 4 4 > 36 < 48 4.6 < Irregularity <= 6.4 4:1 1.25 - 2.5 mi 16.5% to 32.9% OR 66.1% to 83% 20.0 16.0 12.0 8.0 4.0 CATASTROPHIC 5 5 >48 Irregularity > 6.4 >=5:1 < 1.25 mi 33% to 66% 25.0 20.0 15.0 10.0 5.0 Severity Factors (hazard of birds volume/mass of birds attracted) Likelihood (Frequency) Factors - (Proximity to aircraft) Severity Levels Relative Hazard Score - Species BMP - Perimeter Irregularity BMP - Apparent Slope to Water's Edge BMP - Proximity of Water Bodies (from each other) BMP - Percentage of Stormwater Vegetation Coverage Incorporates Mass of Bird and Flock Size by Reported Adverse Effects to A/C Weighted Hazard Ranking Severity Relative Hazard Score (Adjusted to exclude mammals)
