12 All of the factors relied on by Mr Ngo's counsel are relevant mitigating circumstances under ss 21A(3) and 22 of the Crimes (Sentencing Procedure) Act. Nevertheless, the offences were objectively serious. They involved the draining of waste wash water from the activity of hosing out the rear compartment of a garbage truck down an open grate in a public street in the middle of the Fairfield CBD. The wastewater included solid matter and food waste left over from the rubbish lawfully tipped elsewhere. Regulations preventing these types of actions are critical to the orderly and healthy functioning of our urban environment. The community depends on people not to carry out these types of acts for its continued well being. They are of basic and fundamental importance particularly in an urban environment. It is usually difficult to detect those responsible for these types of acts. They tend to be carried out, as here, in the middle of the night and the early hours of the morning. Such actions simply cannot be tolerated. The lack of actual harm to the creek does not change the fact that the defendant, acting under instruction, used the public stormwater system as a form of garbage receptacle. I consider that it would be inconsistent with the objects of sentencing set out in s 3A of the Crimes (Sentencing Procedure) Act to apply s 10 to the facts of this case despite all the strong mitigating factors in Mr Ngo's favour. The offences in this case demand that substantial weight be given to the objects of adequate punishment, deterrence of others, protection of the community, and denunciation of Mr Ngo's conduct.