regulation 4
1. In this Schedule—
“LA10,18h” is the arithmetic mean noise level in dB(A) exceeded for 10% of each hour over the period 06:00 – 24:00 hours;
“LAeq,16h” is the equivalent continuous sound level in dB(A) that, over the period 07:00 – 23:00 hours, contains the same sound energy as the actual fluctuating sound that occurred in that period;
“LAeq,18h” is the equivalent continuous sound level in dB(A) that, over the period 06:00 – 24:00 hours, contains the same sound energy as the actual fluctuating sound that occurred in that period;
“LAeq,6h” is the equivalent continuous sound level in dB(A) that, over the period 24:00 – 06:00 hours, contains the same sound energy as the actual fluctuating sound that occurred in that period.
2. The supplementary noise indicators in relation to road traffic noise are—
(a)LA10,18h;
(b)LAeq,16h;
(c)Lday; and
(d)Levening.
3. The supplementary noise indicators in relation to railway noise are—
(a)LAeq,16h;
(b)LAeq,18h;
(c)LAeq,6h;
(d)Lday; and
(e)Levening.
4. The supplementary noise indicators in relation to aircraft noise are—
(a)LAeq,16h;
(b)Lday; and
(c)Levening.
5. The supplementary noise indicators in relation to industrial noise and port noise are—
(a)LAeq,16h;
(b)Lday; and
(c)Levening.