What is a WAC test?
This is a specific two-part leachate test (solid to liquid ratios of 8:1 and 2:1) to BSEN12457-3 that is a component part of the waste acceptance procedure. This test has been designed to mimic the action of rainfall upon the waste when in landfill and to establish the stability of certain metals and organic components of the waste. Currently a WAC test is a requirement for hazardous and inert waste streams, though certain types of inert waste may be exempt from this test [ref:The Landfill (England and Wales) Regulations] The levels of the components specified in the test must be below certain thresholds before the waste can be allowed into landfill.