(Ashland, OR) -- The boat inspection station on I-5 in Ashland found invasive golden mussels on a boat that came from the Sacramento River Delta. The boat was decontaminated and the mussels were removed. Golden mussels are similar to zebra and quagga mussels that are also a concern. They live in fresh water, hurt the food chain for fish, and cause millions of dollars in damage to irrigation equipment and dams. The Oregon Department of Fish and Wildlife says the threat from the mussels is very serious.