“My girlfriend tells me I smell like trash,” says Colin West. And he takes that as a compliment. West spends 40 to 60 hours a week scuba diving Lake Tahoe to locate and remove submerged trash. On the day I spoke with him, he and a group of divers had collected 576 pounds of underwater garbage, including a massive monster truck–style tire. And since launching the nonprofit Clean Up the Lake in 2018, West and his team of ten full-time employees and contractors, plus an army of trained volunteers, have picked up more than 18,000 pounds of refuse.