Biosolids Recycling FSludge may be treated to a level that allows it to be recycled as BiosolidsSludge may be treated to a level that allows it to be recycled as Biosolids FA number of regulated trace elements must be measured and not exceed established standardsA number of regulated trace elements must be measured and not exceed established standards Fwww.biosolids.state.va.uswww.biosolids.state.va.us Fhttp://biosolids.policy.net