BIOSOLIDS LAND APPLIER CERTIFICATION TRAINING: Online Course

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 Laboratory analyses report that a liquid biosolids sample contains 150  mg/kg zinc on a wet mass basis. If the liquid sample were 5 percent  solids, what is the zinc concentration on a dry mass basis and is it  compliant with the Pollutant Concentration Limit (PCL or Table 3 from  Part 503 Subpart B)? 

Biosolids are being land applied in bulk under CPLR requirements. What is the site life (in years) if the annual pollutant loading rate for nickel (Ni) were estimated to be 19.4 kg Ni/ha and the CPLR limit (Table 2) for Ni were 420 kg/ha-year?