Sorry guys, you think there is a lot of difference between a leaky car parked by the dyke (say the Canal) or by the road side bordering the river (say at Tamahi) and those parked close to the river? In a heavy rain run off, all oily stuffs got flushed down to the river. Don't forget oily stuffs float on top of any run off and the river is the lowest point. That is just no running away from it. The best thing is to stay home and don't go fishing, or only go fishing if you have a new non-leaky car.
All of us contribute to polluting the environment by going fishing. I don't want to throw the first stone to those parked at train bridge.
BNF861, most of those guys spey fishing the train bridge are old timers all knowing each other well. They treasure that spot for easy access. Some of those guys are so efficient with catching steelies with conventional drift gears they now want to take the challenge of spey fishing for steelhead, LOL. Yeup. I know some of those guys fishing there but I fish all over the river just for the 'hunting' feeling of steelheading. Over the years, he caught more steelies than I do though.