Regulatory Compliance

Metals and Fertilizer Micronutrients:
Top Choice Organic vs US EPA Limits

Metals and Fertilizer Micronutrients US EPA Exceptional Quality Upper Limits 2009 Top Choice Organic Average
Arsenic 41 mg/kg 2.3 mg/kg
Cadmium 39 mg/kg 2.9 mg/kg
Chromium No limit** 102 mg/kg
Copper 1,500 mg/kg 370 mg/kg
Lead 300 mg/kg 55 mg/kg
Mercury 17 mg/kg 0.1 mg/kg
Molybdenum 40 mg/kg 7.0 mg/kg
Nickel 420 mg/kg 47 mg/kg
Selenium 100** mg/kg 0.26 mg/kg
Zinc 2,800 mg/kg 586 mg/kg
**40 C.F.R. Part 503 Final Rule, as amended August 4, 1999, 64 Fed Reg 42552, & October 25, 1995, 60 Fed. Reg. 54764, after, Leather Industries v. EPA, 40 F.3d 392 (D.C. Cir. 1994)