1.   Cook said he understood how the cumulative effects of dozens of decisions affecting river flows could ultimately affect wildlife and water quality.

2.   Environmentalists are concerned that the proposal could jeopardize recent agreements to protect wildlife and water quality in the Sacramento Delta and San Francisco Bay.

3.   Grant Godfrey, staff attorney for the alliance, said the state should set stricter limits on nitrogen or phosphorous, which can diminish water quality.

4.   Lake Champlain has been under siege, biologically speaking, by nuisance invaders such as the lamprey eel and the zebra mussel that threaten sports fishing and water quality.

5.   The park service said that snowmobiles hurt air and water quality with their two-stroke engines, which give off lots of exhaust that leaches into the water.