This approval was granted to National Grid in September 2017 to decontaminate natural gas pipeline using soaking tanks filled with Enviro Clean. This approval was issued pursuant to Section 6(e)(1) of the Toxic Substances Control Act (TSCA) and the Federal PCB Regulations found in Title 40 of the Code of Federal Regulations in section 761.79(h).
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.- National Grid Approval (PDF)(24 pp, 878 K)