Document mq8Q5EVrONYJKJVMvwamBo04B

scarfing operations. Provided, however, that - Allowable -v the hot scarfing Machine existing on January I, Process weight Rate Emission Rate . 198.7 and operated by the LTV Steel Company. Pounds Per Moor Pounds Per Hour Inc., at Its. Chicago works, which employs wet - scrubbers, may emit particulate matter In - (.000 - 2.000 3.0s 4.70 ' .amounts not exceeding 1J8 mg/dscm (0.06 gr/dscf) 3.000 6.3S Curing hot scarfing operations so long as 4.000 . 8.00 emissions'do not edceed 23. mg/dscm (0.01 gr/dscf) as an hourly .average, as measured per s.eoe 6.000 9.S8 11.30 hour. 7.000 8.000 12.90 14.30 (Source: Amended In R84-48 at IT -111. Reg. 691. effective Oecember 18. 1986) 9.800 10.000 1S.S0 16.6S 12.000 18.70 16.000 21.60 Section -212.452 Measurement Methods 18;800 23.40 20.000 21.10 Particulate matter emissions from emission sources subject to Sections 212.441. through (Board Rote: For process weight rates 212.4SV shall be determined In accordance with not listed.'straight line interpolation procedures.pub'll.shed In 40 CFR60. Appendix A. between two consecutive process weight Methods 1-S. front one-half of the sampling rales SfiaTT be use<Ttb<Rreirm1he train. 42 Fed. Reg. 41754, et seq. (August 18.' 1977)i Visible emission evaluation'for . t allowable emission rates.*); determining compliance shall be conducted In (Source: Amended at 3 III. Reg. 184. effective - ' " Accordance with procedures "published In 40 CFR ' September yg.' 1979) . ' 60, Appendix A. Method 9. 42 red. Reg. 417S4. etseq. (August 18. 1977). Section 212.4S7 Certain Small Iron-Melting . (Source: Amended at 3 111. Reg. 184, effective . Air Furnaces . _ . September 28. 1979) Section 212.322 shall not apply to Iron-melting air furnaces if all the following conditions are Section 212.4SS Hlgbltnes on Steel Mills met: . ' i Section 212.308 shall not apply to hlghllnes at .. steel mills. ; .i - (Source: Amended at 3 111. Reg. 100, effective October 26. 1979) a) The air furnace was In ex.tstcnc.e-.pr.1or to . April. TS; t987rain,'1r ToeatedB^.)iBOpeston. | Vermilion County. Illinois; and. b) The air furnace process weight-fate Is less ' 1 than or equal to 5.Cl0Q Ib/hr; and. Section 212.4S6 Certain Small Foundries Sections 212.321 and 212.-322 shall not apply to foundry cupolas if all the following conditions are met: c)', The air furnace as of November 23. 1977, eitherr- 7.,-" ... '.1) Is`In compliance with isubsection (c)(3): or a) The cupola was in existence prior to-April IS. 1967; and b) The cupola process weight rate Is-less than ' or equal'to 20.000 Ib/hr; and, - ;2) Is in compliance with trie terms and conditions--of a variance- granted- by theBoard; and constructionhas coxroehced on equipment or modifications sufficient to achieve compliance with subsection (c)(3). c) The cupola as or April 14. 1972. either; 1) Is In compliance with subsection (c)(3); or, 2) Is' In compliance with the terms and conditions of a variance granted by the 8oard. and construction has Conroeneed on equipment or modifications sufficient to achieve compliance with subsection (c)(3). 1) Allowable emissions from small foundries covered by Section 212.4S6: 3) Allowable emissions from siult Iron-meltIbg air furnaces covered"6y Section 212.4S7: Allowable..,.. Process weight Rate Emission Rate Pounds Per Hour Pounds Per H9VC 1.000 2.000 3.000 4.000 S.000 6.10 ' . r.r 12.70 16.00 19.16 - 62 -