23.—(1) Operation of the authorised development shall not be commenced until a scheme has been submitted to the relevant planning authority in consultation with Natural England and approved with the objective that the rating level, as defined in BS4142:1997, of noise from the authorised development following commissioning, recorded at the stated locations, shall not exceed the noise levels listed in the following table except in the case of an emergency, or unless otherwise approved by the relevant planning authority.
| Location | Rating Level dBLAeq 1 hour |
|---|---|
| NSR8 | 53 |
| NSR9 | 47 |
(2) Compliance with the above limits shall be deemed to be achieved through compliance with a programme of attended noise monitoring and periodic site noise audits and equipment condition reviews via the written scheme to be agreed pursuant to requirement 21 above.
(3) The monitoring of noise pursuant to this requirement shall be compliant with the requirements of ISO 1996 Part 2 (2007).