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NOISEi ZONE ~EASUREMENT
<br /> Code o~Federal Re~uia4om, ?att 256 of Tide 32, .ales the day-
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<br /> ~Om: ai'r ?sc~lhd°~.:~NL ~verages ~rcra& sound levels
<br /> '[0caffo~ over:mcom~[4e~2A,bour period, wic~ a tO-decibel
<br />
<br /> :'.: Nh,~.'~ sOu'fi~12~O:'~'B is appro=matety ~he ~reshola
<br /> . human: h~ln~&~;g, ~areiy au&hie under extreme quiet lhtening
<br /> (. 'e0n.d[~onsJ Normal ~p4ech h~ a sound level o fapproximatdy 60
<br /> d~Sbu'nd'(evels abov~about t20 dB begin co be felt i~ide ~e
<br /> ~ kum~n ears = discom~rt ~d eventu~ly, pain at still higher levels.
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<br /> M~y [oc~ noise oedin~ces include limiting noise exposure
<br />m residential zones to 5~ dB at the proper~ line.
<br /> The [bllowing [ll~c~tes a ~picfl suggested noise
<br />compadbili~ table fr°~ a recent ~CUZ stud5
<br />
<br />Sample ~om air insral~tio~s compatible ~ue maes; su~esred ~nd t~e
<br />compatibili~ noise zoneg.
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<br />Land Use r Suggested Land Use Compatibility
<br />
<br /> , (~NL or CbI£L) (DN£ or CNEL) ~ONL ur CNELJ ,
<br />
<br />ll.~ t T,~,, U .......... :.~ o4er ~t Y' ~' ~' N N N
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<br />1~. Tra~Jegl lodgings [ ~( yi] ~1 301 35~ N N
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<br /> However, when the M~CUZ information goes unheeded and
<br />communities allow growth to spread into high-noise and
<br />accident potential zones, noise complaints mount as does the
<br />safety risk to the civilian population.
<br /> Civilians wlao choose co live coo close to an active military
<br />installation often End themselves exposed to the constant
<br />drone of noise, vibrations, and ground tremors emanating
<br />From heavy mechanized military equipment maneuvering on
<br />a nearby installation. They may experience shockwaves From
<br />artillery firing and impacting on a nearby range, as well as
<br />aircraft flying overhead or hovering above homes during the
<br />day or well into the night. Children and parents can lose
<br />sleep, and their health can be affected if constantly exposed
<br />to unhealthy noise levels.
<br /> Community leaders often respond to the complaints by
<br />calling upon instalJarion commanders to alter training
<br />schedules, reduce the number of operations, or cease flying on
<br />weekends, seemingly unaware of the impact of these demands
<br />on the effectiveness of the military mission or of the toot cause
<br />For the complaints.
<br /> Aware that the A~CUZ program information was not being
<br />utilized uniformly by local governments, Congress, in 1985,
<br />authorized the Department of Defense to make community
<br />planning assistance grants, under Title 10, U.S.C. 5 239I,
<br />available to states and local governments. The purpose was to
<br />help community leaders better understand and incorporate the
<br />AICUZ technical information into local community plans and
<br />zoning ordinances.
<br />
<br />Joint Land Use Study Program
<br />The Defense Office of Economic Adjustment (OEA) manages the
<br />Joint Land Use Study (JLUS) Program. It is a cooperative land-use
<br />planning'effort between affected local government and the military
<br />installation. The recommendations developed ~rom the JLUS'
<br />provide the policy Framework to support adoption and
<br />implementation of compatible development patterns near a
<br />military installation that saf%uard the military mission and protect
<br />the health, safety, and welfare of the public.
<br />
<br />Notes: SLUCM means &andard Laad ~r,e Coding Manual.
<br />
<br />Strucwral heights arid allele, The MCUZ also crac~
<br />closdy co the FederalAv~tion Regulation (F~), P=t 77.28, ~d
<br />Military ~rport 'magi~ S.rfac=. Throu~out the Mrcr~
<br />approach, cr=sitions, i=er horizont~, and Outer horizont~ /
<br />and conic~ are~, ~ de~ned, no building, structure, or
<br />object of natural grow~[is co be permitted J
<br /> . . . . ; ,, , ~ Extended Runway ? ~ I ~X v'~
<br />
<br />beyond the m~ximum h~ight established.
<br />The illustration to the r~ht shows the air centre[ surhce
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<br />The Encroachment Dilemma ~.,
<br />C~ve~ the ~vailabili~ of th~ AICUZ information, why
<br />still an encroachment p~oblem confkonting military
<br />installations? The answ{r lies with state and local governments ~ Legend
<br />
<br />char have the power in most instances co incorporate the
<br />AICUZ inGrma6on inl~o local plans and zoning ordinances. For
<br />various reasons, the information is not used in local planning
<br />programs or is ignored dnrirely. Those that chose ~o employ the
<br />inibtmatioo, such as Au. Yora, Colorado, and Clark County,
<br />Nevada. have done so e~'ecrively an& in the process, protected
<br />both clxe militat'v mission and communi~ residents.
<br />
<br />Primary Surface
<br />Clear Zone Surface
<br />Approach/Departure Clearance Surface (glide angle)
<br />Approach/Departure Clearance Surface (horizontal)
<br />inner Horizontal Surface
<br />Conical Surface
<br />Outer Horizontal Surface
<br />Transitional Surface
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<br />'~59
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