IDEQ had issued $20.5 million in loans to North Lake to fund three local improvement districts (LID) to connect Tamarack to North Lake's treatment system and upgrade the system.
One of those districts was the 532 acres with $11.6 million remaining unpaid on the sewer bond, said Tim Wendland, IDEQ's loan programs manager.
IDEQ will now try to sell the property for another phase of Tamarack development.
IDEQ spokesman Brian Monson said missing the deadlines means the state could begin imposing fines of $10,000 a day, though Monson said no decision has been made on doing that.
IDEQ also announced that it is seeking public comment through Nov.
Environmental Protection Agency (USEPA) recommends a critical maximum concentration of 0.75 mg [L.sup.-1] for soluble Al, with acceptable pH ranges from 6.5 to 9.0, which has been adopted in Idaho as the water quality standard (IDEQ