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Check the MSDS of your coatings and tints to see if they use pigments that have toxic metals in them. Some of the metals on Californiaâs list are lead, cadmium, chromium, copper, and zinc. A complete list is published in title 22, section 66262.34. If the pigments contain toxic metals, then the paint, filters and sanding waste most likely will contain those metals. Your determination would be that these wastes are hazardous.