The San Diego Regional Water Quality Board pushed off until next year a rule change that would allow copper and zinc to keep flowing through Chollas Creek.
The board is now also considering a new regulation that could cost businesses in the creek’s 25-square-mile watershed tens of thousands of dollars.
At what ended up being an all-day meeting, San Diego Mayor Kevin Faulconer lobbied the board to scale back a 2008 rule that limits the amount of copper and zinc allowed into the creek.
Those rules were meant to protect marine life, but they were based on inadequate science. Even the board’s chairman, Henry Abarbanel, said the existing metals limits are “unscientific and random.”