Code of Maryland Regulations (Last Updated: April 6, 2021) |
Title 15. Maryland Department of Agriculture |
Subtitle 18. STATE CHEMIST |
Chapter 15.18.04. Compost |
Sec. 15.18.04.12. Table 2. Compost Cumulative Loading Limits (Maximum)
Latest version.
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Regulated Heavy Metal Cumulative
Loadinga,bA. Arsenic 37 lbs/acre B. Cadmium 35 lbs/acre C. Chromium 2,680 lbs/acres D. Copper 1,340 lbs/acre E. Lead 270 lbs/acre F. Mercury 15 lbs/acre G. Molybdenum 16 lbs/acre H. Nickel 375 lbs/acre I. Selenium 90 lbs/acre J. Zinc 2,500 lbs/acre (a) This is the maximum sum of all prior loadings to the soil.
(b) Compost shall have a pH greater than or equal to 5.5.