A local resident recently advised the park of a marijuana plantation near his property. Rangers joined Marin County Sheriff’s Office deputies in searching for the site, and found about 225 plants in a patch within the park. They destroyed the plants and removed evidence from the site. To date, NPS law enforcement personnel (rangers, special agents and Park Police officers), DEA agents, county deputies and officers from a number of other agencies have cooperated to remove 5,500 plants worth about $19 million from three sites within the park and another 7,800 plants from a site on adjacent Marin Municipal Water District lands. Evidence of both firearms and ties to Mexican drug trafficking organizations have been found at all the sites. Significant resource damage has included the diversion of water, the clearing of vegetation, and the application of fertilizer and pesticides at the sites.