Technical Memorandum on Noise from Percussive Piling

Table 5B - Permitted Hours of Operation for the Carrying Out of Piling Work Involving the Use of Diesel, Pneumatic and/or Steam Hammers
(i) Effective for percussive piling work to be conducted until 31.3.98
Amount by which Corrected Noise Level (CNL) exceeds Acceptable Noise Level (ANL), CNL - ANL Permitted hours of operation on any day not being a general holiday
10 dB(A) < CNL-ANL 0800 to 0900 AND 1230 to 1330 AND 1700 to 1800
0 dB(A) < CNL-ANL <= 10 dB(A) 0800 to 0930 AND 1200 to 1400 AND 1630 to 1800
CNL-ANL <= 0 dB(A) 0700 to 1900
(ii) Effective for percussive piling work to be conducted between 1.4.98 and 30.9.98 (Stage 1)
Amount by which Corrected Noise Level (CNL) exceeds Acceptable Noise Level (ANL), CNL - ANL Permitted hours of operation on any day not being a general holiday
20 dB(A) < CNL-ANL Nil
10 dB(A) < CNL-ANL <= 20 dB(A) 0800 to 0900 AND 1230 to 1330 AND 1700 to 1800
0 dB(A) < CNL-ANL <= 10 dB(A) 0800 to 0930 AND 1200 to 1400 AND 1630 to 1800
CNL-ANL <= 0 dB(A) 0700 to 1900
(iii) Effective for percussive piling work to be conducted between 1.10.98 and 31.3.99 (Stage 2)
Amount by which Corrected Noise Level (CNL) exceeds Acceptable Noise Level (ANL), CNL - ANL Permitted hours of operation on any day not being a general holiday
10 dB(A) < CNL-ANL Nil
0 dB(A) < CNL-ANL <= 10 dB(A) 0800 to 0930 AND 1200 to 1400 AND 1630 to 1800
CNL-ANL <= 0 dB(A) 0700 to 1900
(iv) Effective for percussive piling work to be conducted between 1.4.99 and 30.9.99 (Stage 3)
Amount by which Corrected Noise Level (CNL) exceeds Acceptable Noise Level (ANL), CNL - ANL Permitted hours of operation on any day not being a general holiday
0 dB(A) < CNL-ANL Nil
CNL-ANL <= 0 dB(A) 0700 to 1900
(v) Effective for percussive piling work to be conducted on or after 1.10.99 (Stage 4)
Amount by which Corrected Noise Level (CNL) exceeds Acceptable Noise Level (ANL), CNL - ANL Permitted hours of operation on any day not being a general holiday
-10 dB(A) < CNL-ANL Nil
CNL-ANL <= -10 dB(A) 0700 to 1900

 

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