Re "One shot to save Delta's ecology" (Forum, Dec. 1): I've known Dennis McEwan as a state Fish and Game biologist, not as a water policy pundit. I would have been stunned if he had written this shout-out to the Delta "Chunnels" while at Fish and Game. But now McEwan works for the promoters of the proposed twin-tunnel project, the state Department of Water Resources. The Delta protection problem is as it was with the Peripheral Canal 40 years ago. The state Water Resources Control Board was created in the 1960s to establish, among other things, how much freshwater through-flow is needed to protect Bay-Delta estuary resources. The board has been politically restrained from doing its job. Building first and finding out how badly it affects the estuary second was the problem with the Peripheral Canal. Now it's the problem with the Chunnels.
-- Bill Kier, San Rafael