CalMat Co/Vulcan CalMat Co/Vulcan8150 Gravenstein HwyCotati CA 94931 USAPhone: 707-792-4695Url: http://www.vulcanmaterials.comMonday9:00 AM - 5:00 PMTuesday9:00 AM - 5:00 PMWednesday9:00 AM - 5:00 PMThursday9:00 AM - 5:00 PMFriday9:00 AM - 5:00 PMSaturdayClosedSundayClosed