RICHLAND COUNTY LANDFILL Summer Hours Monday- Saturday 7:30 am to 4:15 pm From April 23 until November Call 406-798-3352 with RICHLAND COUNTY PUBLIC WORKS questions or visit the website for a list of accepted materials: richland.org/403/Landfill RICHLAND COUNTY LANDFILL Summer Hours Monday- Saturday 7:30 am to 4:15 pm From April 23 until November Call 406-798-3352 with RICHLAND COUNTY PUBLIC WORKS questions or visit the website for a list of accepted materials: richland.org/403/Landfill