# COMAR Title 15 — Maryland Department of Agriculture

## Subtitle 18 — State Chemist

### Chapter 04 — Compost

#### Regulation .12 Table 2. Compost Cumulative Loading Limits (Maximum).

*COMAR 15.18.04.12*

Regulated Heavy Metal
            Cumulative Loadinga,b
          
        
        
          
            A. 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.