In a move that Imperial County Public Works officials hope will set to rest an issue at Brawley’s Wiest Lake that has been ongoing since last summer and beyond, an algae-control system will now be installed as a preventative measure to halt the harmful algae blooms that intermittently closed the lake and threatened native ecosystems in the area.  The Imperial County Board of Supervisors unanimously approved the purchase and installation of the system at the meeting on Tuesday, Feb. 6, by recommendation of Public Works Director John Gay. The proposed LG Sonic device is a “floating, solar-powered platform” that, according to the algae-control professionals, should “reduce algal blooms by up to 70-90%.” “It’s an ultrasonic system that is solar-powered, and it delivers sounds that we cannot hear,” Assistant Public Works Director David Dale summarized for the county board.