Unassisted), hand excavation/digging (using shovels/picks), carrying and climbing ladders, operating and working from man lifts, operating electronic tools (drills, saws, etc.), using hand tools (screwdrivers, wrenches, hammers, etc.), and providing services under varying weather conditions. SCS is building a world where environmental systems and infrastructure strengthen the health, safety and resilience of communities — from reducing methane emissions at landfills to producing alternative energy, from repurposing contaminated properties to sequestering carbon.