19 The foregoing facts taken together illustrate that the relevant risk to safety arising from the felled tree was both obvious and reasonably foreseeable. First, the activity of tree felling itself is replete with hazards and attendant risks to safety, all of which are well documented within the industry. Secondly, the defendant described in his evidence the topography and general climatic conditions prevailing at the time he commenced felling the tree. These included the undulating terrain (a slope of about 16 degrees), a corridor of trees in the vicinity of the second tree to be felled, the structural integrity of the second tree which the defendant deemed unsafe, a four knot wind, and the presence of power lines some 15 to 20 metres to the left of the second tree. Thirdly, the length of the rope utilised by the defendant to pull the second tree was shorter than the recommended length under the Code of Practice and the Standard. Ms Fakes gave evidence that in circumstances where a tree is to be felled by means of a person pulling it on a rope then the rope should be longer than the height of the tree. This as I understood her evidence was a necessary precaution aimed at ensuring the safety of the puller (here the defendant). In relation to other persons not actively engaged in the felling of trees, such as Mr Hill on the defendant's second version of events, I consider that the effect of various safety practices recommended in the Code of Practice and the Standard, namely, that the safe working zone should extend to twice the length of the tree to be felled, was intended to apply to those persons. Clearly, on the second version the practice was not implemented by the defendant. Fourthly, the defendant has suggested in his second version of events that Mr Hill inexplicably moved out of the designated "safe area" into the line of the fall of the second tree. Even if he did so, such conduct would not mitigate in any way the objective seriousness of the offence. A defendant is obliged under the legislation to proactively identify all possible risks and take appropriate preventative measures. This obligation applies just as forcefully to a situation where a person in the nearby vicinity acts carelessly, is inattentive or negligent or even disobedient to an express direction and thereby places himself or herself in a situation of risk: see for example the comments of Walton J, Vice-President in WorkCover Authority of New South Wales (Inspector Farrell) v Schrader (2002) 112 IR 284 at [55] to [61].