In addition to the complicated process of buying parcels of land and landfill that would become the future state park, how areas were to be used was and remains controversial. The City of Berkeley was to have contributed its former landfill to become one of the larger areas of "upland" (dry land) for the park but held it back, apparently out of concerns that recreation would be overly restricted. (That 90 acres or so of capped landfill is now Cesar Chavez Park.) Albany's former landfill, the Albany Bulb, was hotly disputed -- on one end of the spectrum, some wanted it to be entirely a conservation area that did not allow people; on the other, park users wanted continued access and recreation -- and set aside to be transferred at some later point into the state park. (As of 2020, that has not happened.) North Point Isabel, a toxic landfill that was remediated and capped in the mid-1980s, had been popular for recreation, including off-leash dog walking. Sierra Club, Citizens for East Shore Parks, Golden Gate Audubon Society and others worked to restrict recreation on that spit of land and require dogs to be on-leash-only. In response to tremendous public support, state park planners authorized the continued use of North Point Isabel for off-leash recreation. Sierra Club opposed that.