A state water agency on Tuesday proposed a Northern California man pay $4.6 million in fines and restore wetlands he allegedly damaged while trying to build a kite-surfing hub and revive a duck hunting club in a small island northeast of San Francisco.

The San Francisco Bay Regional Water Quality Control Board said John Sweeney and his Point Buckler Club filled and degraded more than 29 acres of tidal wetlands on the 51-acre Point Buckler Island located in Solano County’s Suisun Marsh.