| Electronic Code of Federal Regulations (e-CFR) BETA TEST SITE e-CFR Data is current as of November 22, 2005 Biosolids may contain chromium at 100,000 ppm Biosolids is not mentioned in 503 Title 40: Protection of Environment PART 503—STANDARDS FOR THE USE OR DISPOSAL OF SEWAGE SLUDGE Subpart B—Land Application Browse Previous | Browse Next § 503.13 Pollutant limits. (a) Sewage sludge. (1) Bulk sewage sludge or sewage sludge sold or given away in a bag or other container shall not be applied to the land if the concentration of any pollutant in the sewage sludge exceeds the ceiling concentration for the pollutant in Table 1 of §503.13. (2) If bulk sewage sludge is applied to agricultural land, forest, a public contact site, or a reclamation site, either: (i) The cumulative loading rate for each pollutant shall not exceed the cumulative pollutant loading rate for the pollutant in Table 2 of §503.13; or (ii) The concentration of each pollutant in the sewage sludge shall not exceed the concentration for the pollutant in Table 3 of §503.13. (3) If bulk sewage sludge is applied to a lawn or a home garden, the concentration of each pollutant in the sewage sludge shall not exceed the concentration for the pollutant in Table 3 of §503.13. (4) If sewage sludge is sold or given away in a bag or other container for application to the land, either: (i) The concentration of each pollutant in the sewage sludge shall not exceed the concentration for the pollutant in Table 3 of §503.13; or (ii) The product of the concentration of each pollutant in the sewage sludge and the annual whole sludge application rate for the sewage sludge shall not cause the annual pollutant loading rate for the pollutant in Table 4 of §503.13 to be exceeded. The procedure used to determine the annual whole sludge application rate is presented in appendix A of this part. (b) Pollutant concentrations and loading rates—sewage sludge.—(1) Ceiling concentrations. Table 1 of § 503.13_Ceiling Concentrations 503 cancer causing agents ------------------------------------------------------------------------ Ceiling concentration Pollutant (milligrams per kilogram) (ppm) \1\ ------------------------------------------------------------------------ Arsenic.................................................. 75 Cadmium.................................................. 85 Copper................................................... 4300 Lead..................................................... 840 Mercury.................................................. 57 Molybdenum............................................... 75 Nickel................................................... 420 Selenium................................................. 100 Zinc..................................................... 7500 ------------------------------------------------------------------------ (In original 503 Chromium was limited to................. 3000ppm) (Chromium in Commercial fertilizer derived from hazardous waste limited to 21.3ppm) Chromium limit is now 100,000 ppm \1\ Dry weight basis. (2) Cumulative pollutant loading rates. Table 2 of § 503.13_Cumulative Pollutant Loading Rates ------------------------------------------------------------------------ Cumulative pollutant loading Pollutant rate (kilograms per hectare) ------------------------------------------------------------------------ Arsenic.................................................... 41 Cadmium.................................................... 39 Copper..................................................... 1500 Lead....................................................... 300 Mercury.................................................... 17 Nickel..................................................... 420 Selenium................................................... 100 Zinc....................................................... 2800 ------------------------------------------------------------------------ (3) Pollutant concentrations. Table 3 of § 503.13_Pollutant Concentrations ------------------------------------------------------------------------ Monthly average concentration Pollutant (milligrams per kilogram) \1\ ------------------------------------------------------------------------ Arsenic.................................................. 41 Cadmium.................................................. 39 Copper................................................... 1500 Lead..................................................... 300 Mercury.................................................. 17 Nickel................................................... 420 Selenium................................................. 100 Zinc..................................................... 2800 ------------------------------------------------------------------------ \1\ Dry weight basis. (4) Annual pollutant loading rates. Table 4 of § 503.13_Annual Pollutant Loading Rates ------------------------------------------------------------------------ Annual pollutant loading rate Pollutant (kilograms per hectare per 365 day period) ------------------------------------------------------------------------ Arsenic................................................... 2.0 Cadmium................................................... 1.9 Copper.................................................... 75 Lead...................................................... 15 Mercury................................................... 0.85 Nickel.................................................... 21 Selenium.................................................. 5.0 Zinc...................................................... 140 ------------------------------------------------------------------------ (c) Domestic septage. The annual application rate for domestic septage applied to agricultural land, forest, or a reclamation site shall not exceed the annual application rate calculated using equation (1). Where: AAR=Annual application rate in gallons per acre per 365 day period. N=Amount of nitrogen in pounds per acre per 365 day period needed by the crop or vegetation grown on the land. [58 FR 9387, Feb. 19, 1993, as amended at 58 FR 9099, Feb. 25, 1994; 60 FR 54769, Oct. 25, 1995] Browse Previous | Browse Next -------------------------------------------------------------------------------- For questions or comments regarding e-CFR editorial content, features, or design, email ecfr@nara. gov. For questions concerning e-CFR programming and delivery issues, email [email protected]. Last updated: July 27, 2005 |