Acceptable Waste
Drilling Mud – naturally occurring rock and soil, sandstone, shale and clay.
Drilling Fluid – water, chemical additives such as bentonite, soda ash (sodium carbonate), sodium hydroxide, lime and polymers.
Concrete slurry, stormwater, street sweepings, ENM, VENM, GSW soils (CT-1).
Unacceptable Waste
Drilling mud generated by deep drilling for mineral, gas or coal exploration.
Drilling through contaminated soils, acid sulphate soils (ASS) or potential acid sulphate soils (PASS).