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§ 503.47 Recordkeeping.
(a) The person who fires sewage sludge in a sewage sludge incinerator shall develop the information in § 503.47(b) through § 503.47(n) and shall retain that information for five years.
(b) The concentration of lead, arsenic, cadmium, chromium, and nickel in the sewage sludge fed to the sewage sludge incinerator.
(c) The total hydrocarbons concentrations in the exit gas from the sewage sludge incinerator stack.