Note: Cyanide is an anion, not a metal. Therefore, there is no total threshold value for cyanide.

TCLP (Toxicity Characteristic Leaching Procedure) analysis needs to be done only for metals if they exceed the respective total threshold values.

Cyanide is listed in the ZDHC wastewater requirements with each value that needs to be tested in sludge based on the sludge disposal pathway (D-G).