Current Articles | RSS Feed
Each option is equally protective of the public health and the environment, so EQ, PC, CPLR, and APLR biosolids used in accordance with the Part 503 rule are all equally safe. For a detailed discussion on these four options, the best bet is to refer to the EPA, but the table below gives a brief primer on each.
Option*
Pollutant Limits
Pathogen Requirements
Vector Attraction Reduction Requirements
Exceptional Quality (EQ) Biosolids
Bulk or bagged biosolids meet pollutant concentration limits
Any one of the Class A requirements listed here
Any one of options 1–8 listed here.
Pollutant Concentration (PC) Biosolids
Bulk biosolids meet pollutant concentration limits
Any one of the Class B requirements listed here
Any one of the ten options listed here.
Option 9 or 10 listed here.
Cumulative Pollutant Loading rate (CPLR) Biosolids
Bulk biosolids applied subject to cumulative pollutant loading rate limits listed here
Any one of the Class A or Class B requirements listed here
Annual Pollutant Loading Rate (APLR) Biosolids
Bagged biosolids applied subject to annual pollutant loading rate limits
* Each of these options requires that the biosolids meet ceiling concentrations for pollutants, monitoring requirements, and recordkeeping and reporting requirements. See the EPA’s Part 503 Rule, Chapter 2 [PDF] for more information.
Schwing Bioset’s advanced processing technology can help you understand and meet these requirements. To learn more, contact Schwing Bioset.
Allowed tags: <a> link, <b> bold, <i> italics