 The Gun Club is responsible for damming off of Bolsa Chica from direct tidal flow with the ocean.In July 1920, the Standard Oil Company entered a lease agreement with the Gun Club Board of Directors that would allow for them to begin oil extraction in between and around the Bolsa Wetlands.This contract specified that the initial bonus of $100,000 and subsequent revenues would be split 50/50 between the Bolsa Chica Gun Club and the Bolsa Chica Land Trust.