Commentaries: Annex 9

(Art. 40 para. 1)

Exposure Limit Values for Noise from Military Firing Ranges and Training Grounds

1 Scope

¹The exposure limit values specified in Number 2 apply to the firing noise on military firing ranges and training grounds.

²In addition to the exposure limit values specified in Number 2, the exposure limit values specified in Annex 7 apply to the noise from civil firing on military firing ranges and training grounds, with the exception of firing by the police and border guards.

³Noise from repair workshops, maintenance workshops and similar operations and noise from traffic on military firing ranges and training grounds is considered equivalent to the noise from industrial and commercial installations (Annex 6 Number 1).

⁴Noise from helicopters on military firing ranges and training grounds is considered equivalent to the noise from heliports (Annex 5 Numbers 23 and 5).

2 Exposure Limit Values

Sensitivity level (Art. 43)	Planning value	Impact threshold	Alarm value
	Lrin dB(A)	Lrin dB(A)	Lrin dB(A)
I	50	55	65
II	55	60	70
III	60	65	70
IV	65	70	75

3 Determination of the Rating Sound Level

31 Principles

The rating sound level Lrfor the firing noise from military firing ranges and training grounds is calculated as follows from the sound levels L~~AE1~~and L~~AE2~~and the level corrections K1 and K2:

Lr=10 ^. log(10^0.¹^.^L^AE1+10^0.¹^.^(L^AE2^+K1)) – 10 ^. log(T) + K2

Where: Lr Rating sound level for noise from military firing ranges and training grounds; T Rating time in seconds = 52 weeks · 5 days · 12 hours · 60 minutes · 60 seconds; L~~AE1~~ Sound exposure level of all the shooting events of a year which have taken place Mondays to Fridays between 07 and 19 hours; L~~AE2~~ Sound exposure level of all the shooting events of a year which have taken place outside of the L~~AE1~~timeframe; K1 5 K2 15

32 Determination of Shooting Operations

¹For existing military firing ranges and training grounds, the number of shots is determined from surveys carried out over three years.

²If, for existing military firing ranges and training grounds, no data on the number of shots is available or if the installations are new or have been modified, the number of shots is determined from forecasts of future use.

Annex 9