Arsenic Study:

Compound	Soil Screening Levels (SSL)*	Levels (ppm) in	Levels (ppm) after
	(EPA-s guidance values)	color concentrate	application on mulch
Arsenic	0.4 ppm	45-48 ppm	0.225-0.24 ppm

•	Soil screening levels based on direct ingestion of soil.
•	Based on arsenic data - the arsenic levels detected after application on mulch are below EPA Superfund soil screening levels (SSL). SSL levels were used as guidelines for this data interpretation.
•	Table A-1 (in the link below) provides generic soil screening levels (SSL) for impurities.

http://www.epa.gov/superfund/resources/soil/appd_a.pdf

Toxicity Studies | Heavy Metal & VOC Studies | Arsenic Study