Light from an object passes through the cornea which is a transparent dome like structure covering the iris. The light rays are refracted by the cornea onto the lens. The light rays are refracted a second time whilst passing through the lens and focussed onto the retina â the light sensitive part of the eye.
The average Radon mitigation cost in Portland, Oregon, or Vancouver, Washington is between $800 to $2,500 with an average of $1,200.
The average cost for a certified or licensed mitigation contractor to lower radon levels in a slab or basement home is about $1,500, and a crawl space home is about $3,000 or more. Your costs may vary depending on the size and design of your home and which radon reduction methods are needed.f your home has a radon problem, it can be fixed by installing a radon mitigation system in the home. EPA and the Nevada Division of Public and Behavioral Health recommends that you get a certified or licensed radon mitigation contractor to install the system.