# COMAR Title 15 — Maryland Department of Agriculture

## Subtitle 18 — State Chemist

### Chapter 04 — Compost

#### Regulation .11 Table 1. Compost Quality Parameters.

*COMAR 15.18.04.11*

Parameter
            Unit
          
        
        
          
            A. pH
            Standard units
          
          
            B. Regulated trace metals or inorganic pollutants:
            
          
          
            (1) Arsenic (As)
            mg/kg dry wt.
          
          
            (2) Cadmium (Cd)
            mg/kg dry wt.
          
          
            (3) Chromium (Cr)
            mg/kg dry wt.
          
          
            (4) Copper (Cu)
            mg/kg dry wt.
          
          
            (5) Lead (Pb)
            mg/kg dry wt.
          
          
            (6) Mercury (Hg)
            mg/kg dry wt.
          
          
            (7) Molybdenum (Mo)
            mg/kg dry wt.
          
          
            (8) Nickel (Ni)
            mg/kg dry wt.
          
          
            (9) Selenium (Se)
            mg/kg dry wt.
          
          
            (10) Zinc (Zn)
            mg/kg dry wt.
          
          
            C. Polychlorinated biphenyls (PCBs)
            mg/kg dry wt.
          
          
            D. Man-made inerts >4mm, 13mm
            percent dry wt.
          
          
            E. Film plastic >4mm
            percent dry wt.