With the clock ticking, a major hurdle to restoring the southern edge of the fast-drying Salton Sea may finally be overcome. Imperial Irrigation District general manager Henry Martinez told the Desert Sun that he and California Natural Resources Secretary Wade  Crowfoot have reached an agreement in principle that the state — not the water district — will be responsible for construction and maintenance of more than 3,700 acres of wetlands aimed at controlling toxic dust and restoring wildlife habitat. In exchange, the water district will sign easements for access onto lands it owns that border California’s largest lake. The agreement could break a years-long impasse and find ways to get restoration projects moving.