Site History
American Canyon is infused with a rich history. Three Native American tribes, the Patwin, Coast Miwok, and Wappo lived in the Napa Valley for thousands of years. The Mexican government granted 84,000 acres of land, known as Rancho Suscol in 1843, to the famous General Mariano Vallejo. In the 1850’s the specific site known as Watson Ranch was homesteaded by the Watson family. Augustus Watson started the Napa Junction Company in 1900, which crushed and manufactured aggregate rock, the main ingredient in cement.
In 1902, Watson sold Napa Junction to Standard Portland Cement Company. Standard built many of the buildings whose relics still remain today. The facility operated for 33 years and included oil-heated kilns, manufacturing and warehouse buildings featuring a machine shop, laboratory and cooperage. In 1946, Basalt Rock Company purchased the property and started production of lightweight aggregate. Basalt added new industrial buildings to the property as well as employee housing and operated until 1978. All of this flourishing activity had provided building materials for the entire San Francisco Bay Area and beyond. This vibrant history contributes to making the site an ideal location for a burgeoning new town center.