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 Princeton, MN 55371
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Order Your Mulch Today
Wednesday November 19, 2008
About SylvaSafe

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