Reference Document MCU22/0102 Updated Environmental Noise Assessment (2)

                                    Table 4.2: Source Sound Power Levels

                               Source Type              Octave Band Centre Frequency, dB (Hz)         Overall
      Description
                                                                                                      dB(A)
                                                   63      125    250   500     1k    2k        4k

Automated Carwash           Industrial building
entry/exit (without          with area source      82      83     84     85     87    86        85       92
doors)                          openings
Automated Carwash
entry or exit with closed
                                                   70      75     72     71     65     61       53       71
automatic PVC 3mm
door (achieving Rw 23)
                              Industrial source
Plant Room                    with area source     57      57     58     59     60     61       60      68
                            openings/ventilation
Manual wash bay             Point sources within
(including super wash        bay representing      79      80     80     82     83    83        80      88
bay)                          worst case spray
                               Point source
Vacuum (unattenuated)                              85      80     82     80     81    82        85       92

                               Point source
Dog Wash bay                                       70       71    71     73     74    74        71       79

                               Point source
3 Phase Vacuum System                              75      70     72     70     71    72        75       79

Vehicles starting and          Point source
                                                   96      89     85     83     79    78        70       85
moving around site
                               Point source
Car doors shutting                                 97      90     86     84     80    77        71      86

Air Conditioning               Point source
                                                   80      82     81     80     77     73       70       82
Condenser Unit
                               Point source
Exhaust Fan                                        58       61    65     52     51    50        65       67




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