Biosolids Dioxin NODA Public Comments for Round 2 Part 503 Rulemaking Available for Viewing
Biosolids Dioxin NODA Public Comments for Round 2 Part 503 Rulemaking Available for Viewing
The NBP is making available the 25 public comments that were submitted by 9-10-02 in response to EPA’s notice of data availability (NODA) for the Round 2 Part 503 sewage sludge regulations that was published in the 6-12-02 Federal Register relating to dioxins in biosolids. The NODA included document summaries of the new sewage sludge data and risk assessment for dioxin. Based on a revised risk assessment (probabilistic) for land application of sewage sludge, the Agency estimates that its highly exposed population to land-applied sewage sludge using the current cancer slope factor is very low, ranging from 2 x 10-5 to 1 x 10-6. EPA had proposed a 300 ppt dioxin limit for land application of biosolids in 1999 and is inviting comment on whether setting such a limit would make no detectable difference in risk or if no further action or rulemaking should be taken. The Agency had provided a list of 12 request for comments that were posted in the Federal Register notice, including whether a voluntary methodology similar to an EMS should be used to identify, reduce, and eliminate sources of dioxin from entering wastewater facilities that contribute to occasional elevated levels of dioxin in sewage sludge.
6-12-02 Federal Register notice:
http://www.epa.gov/fedrgstr/EPA-WATER/2002/June/Day-12/w14761.pdf
See below for the public comments that were submitted in response to the dioxin in biosolids NODA
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