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Date: 2011-09-10 15:54:40Earth Sewerage Chemical engineering United States Environmental Protection Agency Clean Water Act Trickling filter Effluent Sewage treatment Title 40 of the Code of Federal Regulations Environment Water pollution Environmental engineering | Section 1: Title IV, Chapter 60, Wastewater Treatment and DisposalAdd to Reading ListSource URL: water.epa.govDownload Document from Source WebsiteFile Size: 949,19 KBShare Document on Facebook |