How to complete and submit Construction Noise Permit (CNP) application forms

Checklist for a construction noise permit (CNP) application
General construction works
Application requiring special attention (blanket CNP, noise screening, quiet equipment, or equipment not in Technical Memoranda) (checklist03)

Please click here to download the checklist.

For this type of application, the applicant shall refer to the following checklist and other relevant checklist.

	1.	A substantial barrier or enclosure shall be made of a minimum of 10mm thick plywood or 1mm thick steel outer skin and a minimum of 50mm thick sound absorbing lining such that any part of the PME concerned will not be visible from nearby noise sensitive receivers (NSRs). Please provide supporting document(s). Please click here for examples of noise control measures, and quiet construction equipment and techniques.
	2.	The Authority shall adopt the sound power level in the Technical Memoranda (TM) when carrying out the CNP assessment. If the applicant wishes to adopt quiet construction equipment or any equipment not in the TM, the applicant shall submit a noise measurement report for such equipment. Please click here for "Guidelines for preparation of a noise measurement report for powered mechanical equipment".
	3.	For cases involving noise correction(s) due to topographical features (e.g. underground work, complicated terrain, and high-rise building), please provide a scaled plan and sectional drawings showing the screening effects of such features between the noise source(s) and the NSR(s).
The following documents from applicants are essential for applications of "Blanket CNP":
	4.	The contract between the government department or utility company concerned and the main contractor.
	5.	A memo / letter from relevant department or utility company to justify why all alternatives of daytime work are not feasible.
	6.	Details of the maintenance programme from the relevant department or utility company.

Notes:

1. The applicant is preferably the main contractor of the construction site(s) concerned.
2. In one blanket CNP application, the applicant shall only apply for the work locations with same working hours and same equipment list.
3. With regards to criteria 2-6 above, the applicant is advised to contact the respective officer in EPD for the requirements prior to submitting the application. Please click here for the addresses and telephone numbers of the relevant EPD Offices.