comply with an SO2 30-day rolling average emission rate limit of 1.6 lbs/ton; and (4) comply with an SO2 12-month rolling total emission tonnage limit of 655 tons. NOx Emission Controls: By no later than September 9, 2016, Holcim will (1) install and continuously operate SNCR technology for the control of NOx emissions; and (2) comply with a NOx 30-day rolling average emission rate limit of 1.8 lbs/ton. Holcim has converted the cement kiln to a preheater/precalciner and is currently meeting the NOx emission standards of this order. In addition Maryland, has adopted regulations effective as of July 20, 2015, with new RACT rates for cement plants. Cement Kilns in CSAPR U and OTR States* Potential Low Potential Reduction High 2014 NOx Reduction Range Calculation Annual Range State Facility Emissions Number of Units Calculation Annual NOx tons(Regardless of NOx (TPY) tons(Regardless of Regulations) reduction Regulations) on NOx State Apply NOx reduction %: State reduction %: Total Long Long Long Wet kiln 75% Total Long Wet kiln 50%, Dry Wet (PH/PC - Long Dry Kiln 50%, Reduction Long Dry Kiln 20%, 5 stage) Preheater Kiln 25% (tons) Preheater Kiln 0% (tons) National Cement Co of Alabama 1,776.0 1332 888 1 2099 1194.8 Argos Cement, LLC 1,073.0 1 0 0 LEHIGH CEMENT COMPANY 1,534.0 2 767 306.8 AL Holcim Inc 2,168.0 1 0 0 CEMEX Inc, Demopolis (2016 2,274.0 1 0 0 Settlement) Ash Grove Cement Company AR 1,569.0 1 784.5 784.5 313.8 313.8 Foreman Cement Plant LAFARGE NORTH AMERICA, INC 1,602.0 1 801 801 320.4 320.4 IA LEHIGH CEMENT COMPANY - 677.0 1 0 0 MASON CITY
comply with an SO2 30-day rolling average emission rate limit of 1.6 lbs/ton; and (4) comply with an SO2 12-month rolling total emission tonnage limit of 655 tons. NOx Emission Controls: By no later than September 9, 2016, Holcim will (1) install and continuously operate SNCR technology for the control of NOx emissions; and (2) comply with a NOx 30-day rolling average emission rate limit of 1.8 lbs/ton. Holcim has converted the cement kiln to a preheater/precalciner and is currently meeting the NOx emission standards of this order. In addition Maryland, has adopted regulations effective as of July 20, 2015, with new RACT rates for cement plants. Cement Kilns in CSAPR U and OTR States* State Facility 2014 NOx Emissions (TPY) Number of Units Potential Reduction Calculation Annual tons(Regardless of Regulations) High Range NOx reduction Potential Reduction Calculation Annual tons(Regardless of Regulations) Low Range NOx Long Dry Long Wet (PH/PC - 5 stage) Apply NOx reduction %: Long Wet kiln 75% Long Dry Kiln 50%, Preheater Kiln 25% State Total Reduction (tons) NOx reduction %: Long Wet kiln 50%, Long Dry Kiln 20%, Preheater Kiln 0% State Total (tons) AL National Cement Co of Alabama 1,776.0 1 1332 2099 888 1194.8 Argos Cement, LLC 1,073.0 1 0 0 LEHIGH CEMENT COMPANY 1,534.0 2 767 306.8 Holcim Inc 2,168.0 1 0 0 CEMEX Inc, Demopolis (2016 Settlement) 2,274.0 1 0 0 AR Ash Grove Cement Company Foreman Cement Plant 1,569.0 1 784.5 784.5 313.8 313.8 IA LAFARGE NORTH AMERICA, INC 1,602.0 1 801 801 320.4 320.4 LEHIGH CEMENT COMPANY - MASON CITY 677.0 1 0 0 on
OTC_Control_Measures_Recommendations_GN_SIPs_Whitepaper_Appendix_A_Cement_Kilns_08212017.docx