Threshold is 100 percent of sites in surveillance. In 2023 there were 35 aquatic invasive plant infestations in Lake Tahoe,12 of which (33 percent of sites) met the threshold standard of being in surveillance. For the purposes of evaluating the threshold standard, the Lake Tahoe Aquatic Invasive Species Coordinating Committee defined an infestation as "active" if control requires more than one day for a two-diver team (20 diver hours) per season to treat with hand pulling. Sites in the Planning or Control category are considered “active” infestations (See "about the threshold" for additional details). In 2021,there were limitations accessing projects due to COVID restrictions, Caldor Fire impacts, and a lapse funding resulting in many sites not meeting all criteria needed to remain in surveillance or control status. Planning status was initiated at that time to ensure adequate resources were allocated back to these projects in 2022.