Data has shown that our 0–25 foot cleanups are holding up extremely well over the years, and our alpine lakes are cleaner! Yet our mission goes much deeper than that, literally. So our team has gone back to Donner Lake in this episode to finesse a new cleanup protocol—going deeper to 55 feet, using a new type of gas to breathe, and diver propulsion vehicles to move quicker. This new protocol is complicated, includes more complex types of diving that require more experience and training, and unfortunately is exposing even more debris under our lakes. Follow us as we design this new cleanup protocol for our dive team and revisit Truckee’s Donner Lake!