(a) Emissions from blast furnaces shall be kept to a minimum. No person shall cause or allow any blast furnace to emit air contaminants, as a result of a slip, more than sixty (60) times in any consecutive twelve (12) month period or more than six (6) times in any consecutive thirty (30) day period. For the purpose of this section, a blast furnace slip is defined as a sudden emission of gas containing particulate matter of shade or density equal to or greater than No. 2 of the Ringelmann Scale or forty percent (40%) opacity from the relief valves at the top of the furnace.
(b) If a violation of the provisions of subsection (a) hereof occurs, the Commissioner may require the owner or operator of any blast furnace to equip such blast furnace with observing or recording devices to record all blast furnace slips. Such devices shall be approved by the Commissioner.
(c) All devices used for observing and recording blast furnace slips shall be maintained in good order. Safe and adequate means for inspection of such devices shall be provided by the person responsible for the blast furnace.
(d) All persons responsible for blast furnaces shall make available to the Commissioner, on request, the records of the required observation and recording devices. These records shall be deemed as an admission by the responsible person of the number of blast furnace slips occurring, but they shall not be deemed as a limit on the Commissioner’s action to present evidence that a greater number of slips occurred than the records indicate.
(Ord. No. 857-A-76. Passed 6-27-77, eff. 6-30-77)