Technical Information 3.0
Total Page:16
File Type:pdf, Size:1020Kb
Technical Information 3.0 3.1 Air Installations Compatible Use Zones (AICUZ) Program Overview All airports a ract development. People who work at the airport want to live nearby, and businesses are established to cater to the airport and its employees. As development encroaches upon the airfi eld, more people experience noise and other impacts associated with aircra operations. The Noise Control Act of 1972 declared that it is the policy of the United States to promote an environment for all Americans free from noise that jeopardizes their health or welfare. This act also excluded military weapons or equipment that are designed for combat use. In response to the Noise Control Act of 1972, DoD established the Air Installations Compatible Use Zones (AICUZ) Program to balance the need for aircra operations and community concerns. The goal of the AICUZ Program is to protect the health, safety, and welfare of those living near a military airport while preserving its defense-fl ying mission. AICUZ guidelines defi ne zones of high noise and accident potential and recommend uses compatible within these zones. Local land use agencies are encouraged to adopt these guidelines. Noise Zones Under the AICUZ Program, DoD provides noise zones as a planning tool for local planning agencies. DoD measures noise exposure using the day- night average sound levels (DNL). The DNL noise metric averages noise events that occur over a 24-hour period. Aircra operations conducted at night (10:00 p.m. to 7:00 a.m.) are weighted because people are more sensi- tive to noise during normal sleeping hours when ambient noise levels are lower. The DNL contours on the AICUZ maps refl ect the noise exposure in the surrounding communities and the fact that noise impacts diminish with distance from the airfi eld. DNL contours do not refl ect the noise of individual aircra events. DNL contours are used to assess average long- term noise exposure rather than the impact of a single event. HAMPTON ROADS JOINT LAND USE STUDY 3.0 TECHNICAL INFORMATION / 3-1 FINAL Accident Potential Zones DoD also provides Accident Potential Zones (APZs) around its airfi elds as a planning tool to local land use agencies. APZs are areas where an aircra accident is likely to occur if one occurs. They do not refl ect the probability of an accident. APZs follow arrival, departure, and pa ern fl ight tracks and are based upon analysis of historical data. The AICUZ map defi nes three APZs - the Clear Zone, APZ 1, and APZ 2. The Clear Zone extends 3,000 feet beyond the runway and has the highest potential for accidents. APZ 1 extends 5,000 feet beyond the Clear Zone, and APZ 2 extends 7,000 feet beyond APZ 1. If an accident is to occur, it is more likely to occur in APZ 1 than APZ 2 and more likely to occur in the Clear Zone than in either APZ 1 or APZ 2. As stated above, APZs follow arrival, departure, and pa ern fl ight tracks. APZs are not “roadways” in the sky. Weather conditions, wind, pilot technique, and other air traffi c will typically cause some lateral deviation within the landing pa ern around an airport. Certain land uses are not compatible with military fl ight operations. Modifi cations to proposed land development near the airfi eld can help Figure 3.1 Accident Potential Zone Dimensions (APZs) Source: OPNAV INSTRUCTION 11010.36B, December 2002 HAMPTON ROADS JOINT LAND USE STUDY 3.0 TECHNICAL INFORMATION / 3-2 FINAL resolve tension between the community and the military. In general, DoD recommends that noise-sensitive uses (i.e., houses, churches, amphithe- aters, etc.) be placed outside high noise zones and that people-intensive uses (i.e., regional shopping malls, theaters, etc.) not be placed in APZs. These DoD recommendations are intended to serve only as guidelines. Local governments alone are responsible for regulating land use. Navy Regulations The Navy sets specifi c recommendations for land uses within the various noise and Accident Potential Zones identifi ed in the AICUZ Program. This guidance is contained in OPNAV INSTRUCTION 11010.36B issued by the Chief of Naval Operations (CNO) in 2002, which is used across the country to set compatibility standards around Navy air installations. The suggested land use compatibility charts for noise zones and APZs contained in OPNAVINST 11010.36B are provided in Appendix 1. This instruction updates earlier instructions in eff ect prior to 2002. Figure 3.2 Accident Potential and Noise Levels - Chambers Field Newport Hampton News 258 CHESAPEAKE H Notes: A 64 BAY M The data depicted in this map is P for planning purposes only. 13 T Data used in this map has been O compiled from GIS information 664 provided by the cities of N Chesapeake, Virginia Beach, 17 Norfolk 564 60 R andNorfolkandtheHampton O Roads Planning District. Suffolk 337 A 460 D 164 225 S ATLANTIC B RI 264 DG OCEAN E TUN Portsmouth Virginia Beach 464 65 58 168 Chesapeake CHESAPEAKE 75 BAY 70 65 65 70 60 75 EOCEANVI 65 T CHE CHAMBERS I 70 D 65 EW AV E W A FIELD S 75 T E AP R 70 D EAKE R 664 65 564 Legend 337 LV D INAL B L TERM D NATIONA ER INT WLITTLECRE ELITTLE CREEK R AICUZ Noise Levels APZ Zones EK RD N M APZ1 IL >75Ldn IT A R APZ2 Y 70 - 75 Ldn TH H E RIV W Clear Zone B ER Y A Z 65 - 70 Ldn I 64 Noise Contours L 460 E AV <65Ldn EW VI R O N S E W E L 10 0120.5L Miles 01230.5S Miles 100 acres DateDate : : PreparedPrepared by by : : InIn Association Association with with : : VHB,VHB, Inc., Inc., Kerr Kerr Environmental Environmental Group Group AugustSeptember 2004 2004 EDAW EDAW andand The The Miles Miles Agency Agency 1 sq. Mile HAMPTON ROADS JOINT LAND USE STUDY 3.0 TECHNICAL INFORMATION / 3-3 FINAL Figure 3.3 Accident Potential and Noise Levels - NAS Oceana & NALF Fentress W S A A T PE E R A Newport Hampton K 258 D E News R Notes: 64 CHESAPEAKE 60 Thedatadepictedinthismapis CHESAPEAKE for planning purposes only. 13 Data used in this map has been BAY BAY SHORE D compiled from GIS information 664 EK RD S provided by the cities of CRE H Chesapeake, Virginia Beach, LE O R ELITT R and Norfolk and the Hampton 17 N E 564 60 Roads Planning District. M Norfolk D R IL 337 Suffolk IT A R 460 Y H W 164 225 ATLANTIC Y OCEAN D G I 264 R A E M A V T A O N W E IE VirginiaN Beach C V D K RPortsmouth O 464 R N D 13 IN N D E P E S 58 N S P D E R W 168 I E E N N G L C S L E S Chesapeake R B P D L O V 65 I D N T R F I D R S T 225 C O D L O R 70 N I A A WN T L L TO R A D N EW T ATLANTIC N I D C KIN R LVD S A EACH B LA B V INIA OCEAN IRG 75 ST V 22ND LVD EACHB IA B 14 K VIRGIN E L1 M R P Y 4 264 23 W R S EX 75 V H 3L C 2 I A L NO BE K L RFOLK-VIRGINIA L E YHWYS O E R F D K AR R A T E I O L N P A MI F S O E Y H T I C FC O R Y NAS 2 Y T W L3 I C K 32 P N 70 E OCEANA V A H N N LY 65 5R ***** 64 Y H W O H L L ITARY A L N P R D SMI IN C R E S D D SA R N E I N L N E IL D R V I D 75 S A P N M E R K I V E R R D CITY OF V IRGI NIA B CITY EACH 65 OF CH 70 ESAP EAKE 65 G R E A RD T ING B AND R N L ID G E B 70 YP S 168 G R E A 75 T B R ID G 65 E B Y P S D R T PLE T M ASANT RD N NORTH A S 65 BAY A E MT PLEA L SAN P D T T RD M 23 75 NALF Legend FENTRESS AICUZ Noise Levels APZ Zones 5 APZ1 >75Ldn APZ2 70 - 75 Ldn 70 Clear Zone 65 - 70 Ldn Restricted Zone <65Ldn Noise Contours 65 01230.5 Miles 10 100 acres Date : Prepared by : In Association with : VHB, Inc., Kerr Environmental Group October 2004 EDAW and The Miles Agency 1sq.Mile HAMPTON ROADS JOINT LAND USE STUDY 3.0 TECHNICAL INFORMATION / 3-4 FINAL The most recent AICUZ study the Navy dra ed for its Hampton Roads airfi elds was in 1999. As directed by the JLUS Policy Commi ee, the maps generated as part as the 1999 AICUZ study are the maps used for plan- ning purposes in this JLUS planning eff ort. These maps, shown in Figures 3.2 and 3.3, depict the noise contours and APZs for each of the three Navy air installations included in this study. To further assist in buff ering impacts related to military operations, the Navy has purchased restrictive easements around both Oceana and Fentress.