1. Davis-Monthan Air Force Base/Tucson Joint Land Use Study WELCOME! Policy Advisory Committee (PAC) Meeting July 23, 2003

2. Davis-Monthan Air Force Base/Tucson Joint Land Use Study FIRST PUBLIC INFORMATIONAL MEETING  Held July 9 th at Randolph Clubhouse  Approximately 130 People Attended  Explained Process  Provided Opportunity for Input on Issues  Answered Questions Well Covered by Media  Well Covered by Media

3. Davis-Monthan Air Force Base/Tucson Joint Land Use Study TASK 2 BRIEFING PAPER UPDATE  Comments Received from PAC Members  Reviewing Comments and Updating Paper Based on Comments Received  Will Continue to Update Through Remainder of Study  Briefing Paper is Interim Working Document  Contents Will Be Incorporated Into Final Report

4. Davis-Monthan Air Force Base/Tucson Joint Land Use Study COMPATIBILITY CRITERIA  Avoid concentrations of people exposed to noise and safety hazards  Noise Criteria:  Limit exposure of people and noise-sensitive activities to high noise levels  Safety Criteria:  Limit concentrations of people and safety- sensitive activities in areas of highest probable accident impact

5. Davis-Monthan Air Force Base/Tucson Joint Land Use Study NOISE CRITERIA  Typical Background Sound Levels  Suburban Residential Neighborhood – 35 to 45 db  Office (Interior) – 40 to 50 db  Traffic – 70 to 85 db  Normal Conversation – 60 db

6. Davis-Monthan Air Force Base/Tucson Joint Land Use Study NOISE CRITERIA  Noise Sensitive Activities  Residences and places where people normally sleep, such as hospitals and hotels  Institutional land uses such as schools, libraries, and churches where it is important to avoid interference with such activities as speech, meditation, and concentration on reading material  Uses where quiet is important, such as medical offices, concert halls, cemeteries, monuments, and museums  Outdoor activities where conversation or quiet is important

7. Davis-Monthan Air Force Base/Tucson Joint Land Use Study NOISE CRITERIA  Alternative 1  Prohibit noise- sensitive uses in zones above 65 ldn  Require sound attenuation for effects of external noise on other indoor activities (indoor level of 45 ldn) Notes to Table: 1. With appropriate sound attenuation so that indoor sound levels attributable to exterior sources shall not exceed an Ldn of 45 decibels (dBA) in any habitable area

8. Davis-Monthan Air Force Base/Tucson Joint Land Use Study NOISE CRITERIA  Alternative 2  Prohibit noise- sensitive uses in zones above 60 db  Require sound attenuation for effects of external noise on other indoor activities (indoor level of 45 db) Notes to Table: 1. With appropriate sound attenuation so that indoor sound levels attributable to exterior sources shall not exceed an Ldn of 45 decibels (dBA) in any habitable area; normal construction provides a reduction of 20 to 25 decibels

9. Davis-Monthan Air Force Base/Tucson Joint Land Use Study NOISE CRITERIA  Option 1  Use 2003 AICUZ Noise Contours

10. Davis-Monthan Air Force Base/Tucson Joint Land Use Study NOISE CRITERIA  Option 2  Use Notional (Hypothetical) Noise Contours

11. Davis-Monthan Air Force Base/Tucson Joint Land Use Study SAFETY CRITERIA Risk Risk  The potential for realization of unwanted, adverse consequences to human life, health, property, or consequences to human life, health, property, or the environment; estimation of risk is usually based the environment; estimation of risk is usually based on the expected value of the conditional probability on the expected value of the conditional probability of the event occurring times the consequence of the of the event occurring times the consequence of the event given that it has occurred. event given that it has occurred. Source: The Society for Risk Analysis, Risk Glossary

12. Davis-Monthan Air Force Base/Tucson Joint Land Use Study SAFETY CRITERIA  In Areas of Most Likely Accident Impact  Avoid Uses with Concentrations of People  Residences and similar uses where people reside, such as hospitals and hotels  Employment locations with high density (e.g. offices)  Places where people may gather in large numbers (e.g. shopping centers, auditoriums, recreation areas)  Avoid Uses with Special Safety Considerations  Uses involving hazardous materials or explosives  Critical public health and safety uses (e.g. hospitals, fire stations, police communication facilities)

13. Davis-Monthan Air Force Base/Tucson Joint Land Use Study SAFETY CRITERIA  USAF World-Wide Accident Data  All aircraft types  1985 – 2000  Class A accidents (greater than $1M damage, fatality, total loss of aircraft)  Data available only up to 40,000 ft from end of runway)

14. Davis-Monthan Air Force Base/Tucson Joint Land Use Study SAFETY CRITERIA  USAF World-Wide Accident Data  All aircraft types  1985 – 2000  Class A accidents (greater than $1M damage, fatality, total loss of aircraft)  Data available only up to 40,000 ft from end of runway

15. Davis-Monthan Air Force Base/Tucson Joint Land Use Study SAFETY CRITERIA  Alternative 1  Allow low-intensity employment uses in APZs and Paddle  Graduated density with longitudinal distance (5 to 15 People per acre)

16. Davis-Monthan Air Force Base/Tucson Joint Land Use Study SAFETY CRITERIA  Alternative 2  Allow low-intensity employment uses in APZs and “Center” Paddle  Graduated density with longitudinal distance from runway end (4 to 15 people per acre)  Graduated density (up to 40 people per acre) and additional uses with horizontal distance from centerline

17. Davis-Monthan Air Force Base/Tucson Joint Land Use Study SAFETY CRITERIA  Split Paddle  “Center” Paddle is 5000 ft. wide (2,500 ft on each side of centerline)  Side Paddles are balance of Paddle

18. Davis-Monthan Air Force Base/Tucson Joint Land Use Study COMPATIBILITY CRITERIA Discussion

19. Davis-Monthan Air Force Base/Tucson Joint Land Use Study NEXT STEPS  Task 3 and 4 Briefing Paper  Next PAC Meeting – August 20 th  Second Public Information Meeting  September 23rd  5:00 p.m. to 7:00 p.m.  Location to be Announced  Other?