There are a couple of points to make on that. One of the things the bill recognizes is that individuals, small corporations, and corporations have different means, and it's trying to balance the means to pay a fine with the actual fine.
But before that, it's trying to give the signal that it will be treated seriously. Many of the studies indicate that because we have such low fines, many corporations are treating fines as the cost of doing business. The bill is attempting to ensure that environmental pollution has a severe enough fine that the cost of doing business should be to prevent that pollution.