If you use assistive technology (such as a screen reader) and need a
version of this document in a more accessible format, please email firstname.lastname@example.org.
Please tell us what format you need. It will help us if you say what assistive technology you use.
The Environment Agency have developed this document to clarify and standardise the methods used to calibrate nuclear density gauges, and to test and report on earthworks on landfill sites.