SPRING VALLEY — On Monday, Spring Valley City Council members wanted more information about a bid for enzymes for the sludge in the wastewater treatment lagoon, leading them to recess the meeting and reconvene Tuesday evening.

In-Pipe Technology Co. of Wheaton bid $66,000 to remove 25 percent of the sludge from the lagoon and $50,000 to remove 10 percent of the sludge. Their bid included mixing the enzymes into the sludge. Aquafix of Madison, Wis., bid $35,000 to remove 10 percent of the sludge with no mixing.

“If they don’t make the goal, they’re penalized,” city engineer Jack Kusek said.