MEMORANDUM

DATE:	May 1, 2019 (revised 9/15/2021)

FROM:	Donna Lee Jones, U.S. Environmental Protection Agency; Gabrielle Raymond, RTI International 		 TO:		Integrated Iron and Steel (II&S) Residual Risk and Technology Review (RTR) Project File 		 SUBJECT:	Summary of Integrated Iron and Steel Point Source Emissions Estimates for Risk and Technology Review __________________________________________________________________________________________ 1.0	INTRODUCTION This memorandum describes the point source emission estimates used as part of the Residual Risk and Technology Review (RTR) of the National Emission Standards for Hazardous Air Pollutants (NESHAP) for the Integrated Iron and Steel Manufacturing (II&S) industry (40 CFR, part 63, subpart FFFFF). The primary source of data for the II&S RTR was the responses to an August 2011 information collection request (ICR) sent to the II&S industry that included a questionnaire and a source test request. (EPA, 2018a) The EPA sent out the II&S ICR under the authority of section 114 of the CAA (42 U.S.C. 7414) to acquire the necessary data for the RTR.

      The purpose of this memorandum is to provide an overview of the point source emissions estimates developed from the ICR data obtained from II&S facilities for their emission units as compiled into the II&S Emissions Database. The development of the point source data from the ICR responses are described in detail in a memorandum entitled, "Integrated Iron and Steel Risk and Technology Review: Point Source Data Summary" (EPA, 2019c), that will hereafter be referred to as the "Data Memorandum." Noncategory emissions from sources co-located at II&S facilities are also described in the Data Memorandum. Emission estimates for fugitive emissions from the source category are addressed in the memorandum entitled: "Costs, Emissions and Other Impacts of Control of Fugitive Emissions from the Iron and Steel Industry" (EPA, 2019a).

2.0 	BACKGROUND In accordance with section 112 of the Clean Air Act (CAA), on May 20, 2003, the U.S. Environmental Protection Agency (EPA) established a NESHAP for the II&S industry (68 FR 27646). The 2003 II&S NESHAP establishes Maximum Achievable Control Technology (MACT) standards for emissions of filterable particulate matter (PM) and opacity as surrogates for hazardous air pollutant (HAP) metals. The rule also establishes standards for the oil content of sinter feed, as a surrogate for volatile organic HAP. In addition, the II&S NESHAP establishes work practice standards for additional control of HAP metals. The regulated emission sources at II&S facilities in the 2003 II&S NESHAP include: blast furnaces (BF); basic oxygen process furnace shops (BOPF); hot metal transfer, desulfurization and skimming units (HMTDS); ladle metallurgy operations; and sinter plant emission sources that included the sinter plant windbox exhaust stream, sinter plant discharge end, and sinter cooler.

3.0	FACILITIES AND UNITS        Table 1 lists the companies and facilities that submitted data in response to the II&S ICR. Table 2 shows the production levels of the II&S facilities in the year the ICR tests were performed (as reported), the production at capacity provided by the American Iron and Steel Institute (AIST, 2009), and the number of              Table 1.  II&S Facilities, Companies, and Locations                                  Company Name                                  Facility Name                                  Abbreviation                                      City                                      State AK Steel Corporation AK Steel Ashland AKS-Ashland-KY Ashland                                       KY AK Steel Corporation AK Steel Dearborn Works AKS Dearborn MI Dearborn                                       MI AK Steel Corporation AK Steel Middletown AKS-Middletown-OH Middletown                                       OH ArcelorMittal Cleveland, Inc. ArcelorMittal Cleveland AM-Cleveland-OH Cleveland                                       OH ArcelorMittal USA LLC ArcelorMittal Burns Harbor AM-BurnsHarbor-IN Burns Harbor                                       IN ArcelorMittal USA LLC ArcelorMittal Indiana Harbor - East AM-IndianaHarbor- E East Chicago                                       IN ArcelorMittal USA LLC ArcelorMittal Indiana Harbor - West AM-IndianaHarbor-W East Chicago                                       IN United States Steel Corporation US Steel-Edgar Thompson USS-Braddock-PA Braddock                                        PA United States Steel Corporation US Steel-Gary USS-Gary-IN Gary                                       IN United States Steel Corporation US Steel-Granite City USS-GraniteCity-IL Granite City                                       IL United States Steel Corporation US Steel-Great Lakes USS-Ecorse-MI Ecorse                                       MI

installed units. The II&S ICR data used to populate the II&S Emissions Database, as well as the surrogate data and development of other emission estimates, are described in the Data Memorandum.

4.0	SOURCES OF EMISSIONS DATA Seventy percent of the point source data in the II&S Emissions Database were from source tests. However, II&S facilities could submit previous test reports in lieu of conducting ICR source testing if the tests were conducted within the previous five years of the II&S ICR and the tests were performed with the required EPA methods, minimum test duration, and/or minimum number of test runs, as specified in the II&S ICR. Additionally, facilities with multiple units were permitted to test only one unit (e.g., BOPF or ladle) to fulfill the II&S ICR test request if there were other similar units on site that exhausted to the same type of control device, processed the same types of materials, were the same size and design, and have similar operating conditions. The test data obtained for similar sources were used as surrogate data in the II&S Emissions Database for the units not tested.   Units that were completely idle in 2011 were not tested as part of the II&S ICR. For idle units that could not test similar on-site units, an industry average for that unit type was developed from the ICR data to estimate HAP emissions for the idle unit. II&S facilities with BFs that use flame/fume suppression control (with a natural gas-fired flame) were exempted from testing for the II&S ICR because they are unable to perform stack testing for safety reasons due to an explosion hazard. For the exempted BF units, source test data from other II&S BFs were used as surrogate data in the II&S Emissions Database. The surrogate data were either the average emissions from BFs on site or the overall industry average of test data from BFs in the II&S Emissions Database for cases where all BFs at the facility used flame/fume suppression.        For some II&S facilities, the ductwork to their BF Stoves prevented testing of their stoves directly. Because the BF Stoves were piped into a boiler that could be tested, these facilities could provide test data from their boilers when burning predominately BF gas, in lieu of testing the BF stoves. Table 3 shows the types of data included in the II&S Emissions Database for each unit type. See the Data Memorandum for details on how the emissions were estimated and the units tested.

Table 2. II&S Facility Unit Count and Production: Capacity (2009) vs ICR Modeling (2010)                                    Facility                                   Steel (tpy)                                 No. BOPF Units                               No. BOP Shops (ICR)                                   Iron (tpy)                                  No. BF Units                                   Slag[c] ICR                                                                             ICR[a]                                   Capacity[b]                                    Installed                                       ICR                                                                             ICR[a]                                   Capacity[b]                                    Installed                                     ICR[a]                              Slag in Pits (tpy)[a]                                No. Slag Pits[d] AKS-Ashland-KY                                                                            2,100,000                                        2                                        2                                        1                                       CBI                                    2,000,000                                        1                                        1                                       CBI                                        1 AKS-Dearborn-MI                                    2,352,571                                    4,100,000                                        2                                        2                                        1                                    1,985,570                                    2,190,000                                        1                                        1                                     398,921                                        1 AKS-Middleton-OH                                                                            2,640,000                                        2                                        2                                        1                                       CBI                                    2,300,000                                        1                                        1                                       CBI                                        1 AM-BurnsHarbor-IN                                  5,086,692[f]                                    5,600,000                                        3                                        3                                        1                                  4,511,898[f]                                    5,460,000                                        2                                        2                                     702,427                                        2 AM-Cleveland-OH[e]                                    2,549,770                                    5,100,000                                        4                                        4                                        2                                    2,259,884                                    3,100,000                                        2                                        2                                     587,835                                        2 AM-IndianaHarbor-E[c,][e][, g]                                    4,410,788                                    6,250,000                                        4                                        4                                        2                                    3,925,597                                    6,500,000                                        3                                      1[g]                                      0[c]                                      0[d] AM-IndianaHarbor-W[h]                                    1,209,885                                    3,800,000                                        2                                        2                                        1                                  2,004,807[h]                                    3,100,000                                        2                                        2                                   536,434[h]                                        2 USS-Braddock-PA                                    2,701,327                                    2,957,000                                        2                                        2                                        1                                    2,253,630                                    2,300,000                                        2                                        2                                     470,994                                        2 USS-Ecorse-MI[i]                                    3,212,678                                    3,900,000                                        2                                        2                                        1                                    2,678,997                                    4,150,000                                        3                                      2[i]                                     638,471                                        2 USS-Gary-IN[e]                                    5,871,382                                    8,730,000                                        6                                        6                                        2                                    5,121,867                                    7,340,000                                        4                                        4                                    1,071,844                                      3[d] USS-GraniteCity-IL                                    2,689,151                                    3,000,000                                        2                                        2                                        1                                    2,229,682                                    2,400,000                                        2                                        2                                     468,233                                        2                                      Total                                   30,084,244                                   48,177,000                                       31                                       31                                       14                                   26,971,932                                   40,840,000                                       23                                       20 4,875,159                                       18 [a] ICR production values reported for 2010 for all operating (and modeled) units except one facility (see Footnote f). AK Steel (AKS) claimed the operating levels at their two facilities were confidential business information (CBI) in their ICR responses; therefore, only capacities are shown here.  b From AIST, 2009. [c] Slag capacity for the facilities is not known. "Slag in Pits" above reflects slag tonnage sent to slag pits in 2010. At AM-IH-E, slag from blast furnace (BF) #IH7 (1,140,254 tpy) is sent to a granulator so not included as slag pit slag. When operating, the other two BF units (#IH5 and #IH6) were reported in the ICR to generate a total of 228,841 tpy slag for a facility slag total generated of 1,369,095 tpy. Since BF #IH5 and #IH6 were not operating in 2011 and not tested for the ICR (nor included in the risk modeling), their slag is not included in table above, so slag pit slag equals zero. At USS Gary, slag from BF #14, at 508,623 tpy, is sent to a granulator so not included in the slag pit slag (ICR) in table above. The total generated slag at the facility is 1,580,467 tpy. See Footnote d, below, for information about number of slag pits. [d] Corresponds to working slag pits in 2011. In general, number of slag pits (ICR) equals number of BF (ICR), except for USS-Gary (BF #14) and AM-IH-E (BF #IH7). One BF at each of these facilities produces slag that is sent to a granulator; therefore, there are no slag pits for these BFs. For USS-Gary, this is reflected in the number of slag units, i.e., one less unit than the number of operating BF units. However, for AM-IH-E, during ICR testing in 2011 the other two BFs (#IH5 and #IH6) were not operating nor included in EPA modeling; therefore, no slag pits are indicated in table above for this facility. See Footnote c, above, for information about slag tonnage. e For purpose of estimated BF bell leaks, three facilities have some BF without bells, as follows: AM Cleveland, BF #6; AM IH-E, BF #IH7, and USS Gary, BFs #14 & #4. Therefore, the number of BFs should be reduced by these units when estimating BF bell leaks for the facilities and, similarly, the iron production reduced. For AM-Cleveland, without BF #C6 (963,952 tpy iron), iron contributing to bell leaks from BF #C5 is 1,295,932 tpy. For AM-IH-E, without #IH7 (3,925,597 tpy iron), iron contributing to bell leaks from BFs #IH5 and #IH6 would be 979,732 tpy if these units were operating. For Gary, without BF #4 (1,108,767 tpy) and BF #14 (2,034,491 tpy), iron contributing to bell leaks from BFs #6 and BF #8 is 1,978,609 tpy. [f] AM-BH provided 2011 production values that were more representative of normal operations than 2010.  [g] AM-IH-E was not operating BFs #IH5 and #IH6 during the ICR testing in 2011, so no stack tests were conducted and the EPA did not include these BFs in the risk modelling; therefore, ICR iron production shown in table is for BF #IH7 only. Total iron in 2010 for all three BFs at AM-IH-E was 4,905,329 tpy. [h] AM-IH-W  BF #IH3 was not operating in 2010 so no annual iron or slag data available; estimated iron and slag from 2011 tph iron production during BF stove testing and hours/yr reported for BF #IH4 in 2010. [i] USS-Ecorse was not operating BF #A1 during the ICR testing, so no stack tests were conducted and the EPA did not model this BF. Production values for iron and slag also were not available in the ICR. Data above reflects only BFs #B2 and #B4.

 Table 3.  Summary of Data Types in the II&S Emissions Database, by Unit                                     Unit Type                 Number of Units in II&S Emissions Database                         Total Units with Emissions Data

                                    Source                                      Tests                          Similar Units/ Identical Data                            Industry Default Data[b]                          Boilers Instead of BF Stoves                                       BF                                 Fume Suppression

BF                                       12                                        1                                        0                                       --                                        8                                       21 BF Stoves                                       12                                        2                                        0                                        6                                       --                                       20 BOPF Primary                                       17                                        5                                        2                                       --                                       --                                       24 BOPF Secondary                                       10                                        0                                        0                                       --                                       --                                       10 HMTDS                                       12                                        3                                        1                                       --                                       --                                       16 Ladle Metallurgy                                       13                                        5                                        1                                       --                                       --                                       19 Sinter Plant Discharge End                                        3                                        1                                        0                                       --                                       --                                        4 Sinter Plant Windbox                                        3                                        1                                        0                                       --                                       --                                        4                                     Overall                                       82                                       18                                        4                                        6                                        8                                       118

5.0	EMISSIONS ESTIMATES

The source test data requested in the II&S ICR included the following air pollutants or parameters: filterable particulate matter (PM filterable), hazardous air pollutant (HAP) metals,[1] dioxin/furans (D/F), carbon disulfide (CS2), carbonyl sulfide (COS), hydrogen chloride (HCl), benzene, toluene, xylene, methane, polycyclic aromatic hydrocarbons (PAHs), carbon monoxide (CO), sulfur dioxide (SO2), oxides of nitrogen (NOX), and hydrogen cyanide (HCN)). All point sources had at least one control device that included fabric filters (baghouses), cartridge filter collectors, PM scrubbers, electrostatic precipitators (ESP), and fume suppressants (natural gas). In most cases, HAP emissions were measured directly using EPA stack test methods. For a few cases, HAP emissions were estimated from other ICR test data using various methodologies as discussed below.

Mercury emissions were speciated into elemental, and divalent and gaseous particulate because of wide differences in toxicity and aerodynamic behavior between the species. The speciation for mercury was done using the total measured mercury and EPA default speciation factors, as follows: elemental gaseous mercury, 80 percent; gaseous divalent mercury and particulate divalent mercury each at 10 percent. The use of these default factors is discussed in more detail in the Data Memorandum.

      Chromium toxicity also varies by speciation; therefore, chromium was speciated into chromium III and VI. The BOPF (primary and secondary), Blast Furnace, and BF Stoves were required to test separately for chromium VI (hexavalent chromium) and total chromium. For all other II&S emission units, only total chromium emissions were measured.[3] For units where only total chromium data were available, estimates of hexavalent chromium emissions were made using a hexavalent-to-total chromium ratio developed by averaging test data for total chromium and hexavalent chromium from all BOPF in the II&S Emissions Database. Further detail on chromium speciation factors can be found in the Data Memorandum.

      Emissions of hydrogen cyanide (HCN) from cooling towers used for BF scrubber wastewater at II&S facilities could not be tested directly because these emissions are fugitive and from a very large source (tower). Therefore, wastewater flowrates and HCN water concentration data before and after the cooling tower data were obtained from the ICR to enable a mass balance estimate of HCN emissions. The air emissions of HCN were estimated as the loss in HCN mass in the scrubber wastewater from the inlet to the outlet of the cooling tower. Not all facilities could sample both or any of the sampling points because of equipment configurations. Therefore, HCN emissions were estimated in the II&S Emissions Database from a combination of mass balance and models, or a default industry average developed from the ICR data. Seven facilities either submitted complete data that enabled a mass balance estimate or a combination of measured data and estimating procedures or models. Using the HCN emission estimates from these seven facilities, a default emissions value was developed for the remaining three facilities. One facility does not have a cooling tower. Details of the HCN emissions estimates can be found in the memorandum entitled: "Estimated Hydrogen Cyanide Emissions and Potential Work Practices for Emission Control at Integrated Iron & Steel Facilities." (EPA, 2018b)

For dioxins and furans, emissions of 17 individual dioxin/furan congeners were required to be tested in the II&S ICR because of varying toxicity of the congeners. The 17 dioxin/furan congener values, expressed as mass rates, were entered in the II&S Emissions Database for each facility and unit. The 17 specific dioxin/furan congener mass values also were converted to 2,3,7,8-TCDD toxic equivalency (TEQ) values using the 2005 World Health Organization (WHO) toxicity equivalence factors (TEF) and summed to produce a total TEQ value in the II&S Emissions Database. The EPA uses the total TEQ toxicity value to establish MACT, if needed. Details of the TEQ and TEF factors can be found in the Data Memorandum.

6.0 	POINT SOURCE EMISSIONS DATABASE       The point source emissions measured or estimated for the II&S Steel facilities, as described above, were compiled into the II&S Emissions Database. This file is attached here as an Excel[TM] file. Selected data summaries are shown in the tables below. See the Data Memorandum for details on how the emissions were estimated and the units tested.              Table 4 shows the total point source HAP emissions for each of the 11 II&S facilities, by unit type. Table 5 shows the 2011 estimated point source HAP emissions by HAP for all the 11 II&S facilities combined. Note only three facilities have sinter plants. Table 6 shows point source HAP emissions for all 11 facilities by unit and by HAP in pounds (lb) per year. Table 7 shows the 2011 estimated annual PM filterable emissions for all 11 facilities.        7.0	REFERENCES

AIST, 2009. Directory of Iron and Steel Plants. Association for Iron & Steel Technology, Warrendale, PA. https://www.aist.org  EPA, 2018a. D. L. Jones and G. Raymond. Summary of Responses to EPA Information Collection Requests from Integrated Iron & Steel Facilities. U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Research Triangle Park, NC. EPA, 2018b. D. L. Jones and G. Raymond. Estimated Hydrogen Cyanide Emissions and Potential Work Practices for Emission Control at Integrated Iron & Steel Facilities. U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Research Triangle Park, NC.  EPA, 2019a. D. L. Jones. "Development of Example II&S Facility Emissions to Estimate Uncertainty in Risk Assessment Due to Fugitive or Intermittent HAP Emission Sources.". U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Research Triangle Park, NC. May 1, 2019. EPA, 2019b. D. L. Jones and G. Raymond. "Costs, Emissions and Other Impacts of Control of Fugitive Emissions from the Iron and Steel Industry." U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Research Triangle Park, NC. May 1, 2019. EPA, 2019c. D. L. Jones and G. Raymond. "Integrated Iron and Steel Risk and Technology Review: Point Source Data Summary." U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Research Triangle Park, NC. May 1, 2019.

Table 4.  II&S Industry Estimated 2011 Point Source HAP Emissions by Unit Type - 11 Facilities                                   Facilities                        Point Source HAP Emissions (tpy)                                                                       BF & BF Stoves                                    BOPF Shop                                BF Cooling Tower                                  Sinter Plant                                  Total Point

                                   No Sinter                                   With Sinter AKS Ashland KY                                       0.1                                       0.9                                      0.60                                        --                                        2                                        2 AKS Dearborn MI                                       0.1                                       0.4                                      0.60                                        --                                        1                                        1 AKS Middletown OH                                      0.08                                        1                                     0.077                                        --                                        1                                        1 AM BurnsHarbor IN                                       0.2                                        1                                      0.53                                        76                                        2                                       78 AM Cleveland OH                                       0.1                                        1                                      0.60                                        --                                        2                                        2 AM IN Harbor E IN                                       0.2                                        1                                     0.028                                        81                                        1                                       82 AM IN Harbor W IN                                       0.3                                        1                                      0.60                                        --                                        2                                        2 USS Braddock PA                                       0.2                                        1                                    0.00076                                        --                                        1                                        1 USS Ecorse MI                                       0.2                                       0.3                                      0.60                                        --                                        1                                        1 USS Gary IN                                       1.4                                        2                                    0.00014                                        51                                        3                                       54 USS GraniteCity IL                                       0.2                                        3                                       --                                       --                                        3                                        3                                    Total HAP                                        3                                       12                                        4                                       208                                       19                                       227                                          Table 5.  II&S Industry Estimated 2011 Point Source HAP Emissions By HAP                                        HAP                               HAP Emissions, tpy                                                                       Iron&Steel Only                                 (11 Facilities)                        Sinter Plant Only (3 Facilities) Antimony                                       0.1                                      0.02 Arsenic                                       0.9                                       0.1 Benzene                                       --                                       20 Beryllium                                       0.3                                     0.0014 Cadmium                                       0.3                                       0.4 Carbon Disulfide                                       --                                       23 Carbonyl Sulfide                                       --                                       72 Chromium                                        1                                       0.1 Chromium (VI)                                       0.2                                      0.03 Cobalt                                       0.1                                     0.0061 Ethyl Benzene                                       --                                       15 Hydrochloric Acid                                       --                                       12 Dioxin/Furan                                       --                                     0.00008 Hydrogen Cyanide                                        4                                       -- Lead                                        3                                       11 Manganese                                        7                                       0.6 Mercury                                       0.5                                      0.05 Nickel                                       0.9                                       0.1 PAH                                       --                                        6 Selenium                                       0.4                                       0.1 Toluene                                       --                                       16 Xylene                                       --                                       31                                      Total                                       19                                       208                                         Table 6.  II&S RTR Point Source 2011 HAP Emissions by Facility and Unit Type (lb/yr) HAP         Total Point Source HAP Emissions 2011 by Facility, lb per year

AKS Ashland KY AKS Dearborn    MI AKS    Middletown OH AM BurnsHarbor IN AM Cleveland OH AM IN Harbor E    IN AM IN Harbor W    IN USS Braddock PA USS Ecorse MI USS Gary IN USS GraniteCity IL Total HAP BF Controlled

  HAP  Metals Antimony 3.5    9.7    0.2 3.1 3.1    1.8    1.8 1.8 1.9 37 2.5 67

Arsenic 32    6.6    6.2 1.0 29    1.4    0.3 1.8 1.2 910 1.8 991

Beryllium 0.2    0.1    0.2 0.8 0.2    0.1    0.04 0.5 0.5 1.3 0.04 3.9

Cadmium 1.6    1.1    0.2 2.3 1.4    1.8    0.2 1.1 3.3 11 2.6 26

Chromium 23    5.6    6.3 6.7 20    14    5.1 15.1 9.7 489 12 606

Chromium VI 6.5    2.2    1.7 0.8 5.7    0.6    0.6 1.6 8.7 3.8 52 84

Cobalt 1.2    2.1    0.4 1.1 1.1    0.9    0.8 1.2 0.9 8.8 2.8 21

Lead 7.4    7.5    1.7 7.2 6.6    2.3    2.5 6.2 6.0 44 30 122

Manganese 57    23    16 47 50    64    40 51 69 281 211 909

Mercury 1.2    0.3    3.6 0.6 1.1    1.5    0.4 1.0 0.8 11 0.6 22

Nickel 15    23    11 34 13    7.2    3.5 39 5.0 132.0 6.2 288

Selenium 8.5    37    1.5 17 7.5    5.4    1.9 4.5 12 2.7 2.9 101 BF Controlled Total 157    119    49 122 139    101    58 124 118 1,933 324 3,243 BF Stoves

  HAP  Metals Antimony 0.3    5.2    0.3 3.6 1.1    2.3    2.5 1.1 2.6 3.9 1.7 25

Arsenic 3.0    6.8    8.7 22 3.5    9.4    15 8.2 4.4 16 1.6 99

Beryllium 0.1    0.1    0.1 0.9 0.3    0.2    0.7 0.4 0.5 2.8 0.04 6.1

Cadmium 0.5    0.4    0.4 3.6 0.5    1.5    1.3 1.3 2.8 4.4 1.6 18

Chromium 4.8    7.2    5.7 6.3 8.2    12    8.7 9.1 77 280 2.3 421

Chromium VI 0.3    24    0.1 0.7 0.3    18    4.0 0.5 2.6 3.2 0.8 54

Cobalt 2.6    1.5    0.4 1.1 0.5    2.0    0.8 0.7 2.1 7.6 0.9 20

Lead 2.8    24    12 15 11    25    93 38 9.8 79 33 342

Manganese 11    15    67 39 18    77    343 30 22 192 13 828

Mercury 7.8    4.1    3.2 32 0.8    8.2    1.7 43 4.5 12 1.5 119

Nickel 5.2    4.5    4.6 13 11    11    12 11 48 250 4.4 376

Selenium 7.7    25    8.5 52 30    42    42 61 22 64 5.4 360 BF Stoves Total 46    118    111 189 85    209    525 205 198 914 66 2,668 BOPF Primary                     HAP  Metals Antimony 0.1    11    0.9 5.8 5.3    4.1    0.1 14 1.4 23 25 90

Arsenic 0.5    6.1    1.0 4.8 24    2.7    16 492 2.4 10 2.7 562

Beryllium 0.004    0.1    0.04 1.2 23    0.1    596 1.6 0.3 0.2 0.2 623

Cadmium 0.02    0.8    14 29    224    2.8    5.8 45 13 101 29 464

Chromium 32    62    21 32 62    19    11 39 21 85 87 472

Chromium VI 2.8    73    0.03 3.9 14    2.7    6.6 0.9 19 6.8 87 216

Cobalt 0.7    12    0.8 31 5.8    1.4    1.5 1.1 0.7 7.0 18 79

Lead 201    134    645 384 489    95    1.5 431 51 1,330 1,696 5,457

Manganese 423    256    341 806   1,022    448    5.4 345 138 1,426 2,929 8,140

Mercury 7.4    5.9    17 27 31    2.0    31 74 15 114 166 491

Nickel 12    36    5.4 20 25    9.0    2.1 36 28 31 40 244

Selenium 0.8    7.1    0.1 18 8.4    0.8    74 6.3 3.4 2.4 14 135 BOPF Primary Total 679   603   1,046 1,362   1,934    588    752 1,485 294 3,138 5,094 16,975                                                                     (continued)                                                                      Table 6.  (continued) HAP Total Point Source HAP Emissions 2011 by Facility, lb per year

AKS Ashland KY AKS Dearborn    MI AKS Middletown OH AM BurnsHarbor IN AM Cleveland                                                                              OH AM IN Harbor E IN AM IN Harbor W                                                                              IN USS Braddock PA USS Ecorse                                                                              MI USS Gary IN USS GraniteCity IL Total HAP   BOPF Secondary

  HAP  Metals Antimony 5.7    11    4.1                                                                             6.8                                                                             2.2 4.1                                                                               0 1.6                                                                             1.3 2.8    0 40

Arsenic 6.9    6.5    14                                                                             5.1                                                                             2.4 2.5                                                                               0 1.6                                                                             0.8 0.3    0 40

Beryllium 1.4    0.1    0.5                                                                             1.7                                                                             0.5 0.1                                                                               0 0.4                                                                             0.3 0.1    0 5.2

Cadmium 59    1.6    47                                                                             4.3                                                                             7.5 17                                                                               0 3.3                                                                             7.6 2.2    0 149

Chromium 154    21    50                                                                             5.8                                                                              41 38                                                                               0 15                                                                             5.3 15    0 345

Chromium VI 8.7    2.7    3.8                                                                             4.8                                                                             1.2 7.9                                                                               0 3.7                                                                            0.01 11    0 44

Cobalt 2.5    3.3    3.3                                                                             9.7                                                                             6.7 1.4                                                                               0 0.6                                                                             0.4 0.3    0 28

Lead 253    17    346                                                                              77                                                                              38 160                                                                               0 33                                                                              47 19    0 990

Manganese 497    33    766                                                                             358                                                                             126 507                                                                               0 106                                                                              78 320    0 2,791

Mercury 37    6.6    53                                                                              22                                                                              52 3.7                                                                               0 4.5                                                                              22 15    0 216

Nickel 77    29    33                                                                              45                                                                              50 43                                                                               0 42                                                                              11 18    0 347

Selenium 14    18    1.2                                                                              17                                                                              22 1.3                                                                               0 4.0                                                                             3.2 0.3    0 82 BOPF Secondary Total 1,116   151   1,322                                                                             556                                                                             349 786                                                                               0 215                                                                             177 404    0 5,077 Hot Metal Transfer, Desulfurization, Skimming

  HAP  Metals Antimony 0    1.0    0.4                                                                             0.3                                                                             0.6 1.9                                                                             0.6 0.5                                                                             0.8 5.1    0.9 12

Arsenic 0    0.6    2.6                                                                             0.3                                                                             0.6 1.9                                                                             0.6 0.6                                                                             1.8 0.7    1.0 11

Beryllium 0    0.01    0.1                                                                             0.1                                                                             0.1 0.6                                                                             0.2 0.1                                                                             0.2 0.1    0.1 1.5

Cadmium 0    0.1    0.04                                                                             0.4                                                                             0.5 0.9                                                                             1.4 0.5                                                                             1.1 5.7    0.7 11

Chromium 0    2.0    5.6                                                                             1.0                                                                             5.5 23                                                                              25 8.9                                                                              15 16    5.0 107

Chromium VI 0    0.2    0.6                                                                             0.1                                                                             0.5 2.3                                                                             2.5 0.9                                                                             1.5 1.6    0.5 11

Cobalt 0    0.2    0.4                                                                             0.1                                                                             0.3 1.3                                                                             0.3 0.6                                                                             0.4 2.0    0.4 6.0

Lead 0    0.8    1.7                                                                             3.3                                                                             2.1 7.9                                                                             9.2 3.0                                                                             1.4 6.2    5.0 41

Manganese 0    8.2    54                                                                             4.7                                                                              27 69                                                                              63 43                                                                              52 100    75 494

Mercury 0    4.6    3.2                                                                              15                                                                             3.9 6.2                                                                             3.3 9.1                                                                             1.7 9.0    11 67

Nickel 0    1.5    2.7                                                                             2.2                                                                              21 284                                                                              28 17                                                                              23 9.3    8.0 396

Selenium 0    1.5    0.7                                                                             0.8                                                                             1.2 6.2                                                                             1.8 2.2                                                                             3.6 1.0    1.3 20 HMTDS Total 0    21    72                                                                              29                                                                              63 405                                                                             135 86                                                                             103 156    108 1,178 Ladle Metallurgy                     HAP  Metals Antimony 0.1    1.5    0.02                                                                             0.2                                                                             1.5 6.4                                                                             0.6 0.2                                                                             0.2 1.0    0.2 12

Arsenic 0.1    1.7    0.5                                                                             0.2                                                                             3.3 3.2                                                                             0.6 0.2                                                                             0.1 0.3    0.3 10

Beryllium 0.02    0.03    0.02                                                                             0.1                                                                             0.3 0.3                                                                             0.2 0.04                                                                            0.04 0.1    0.1 1.1

Cadmium 0.2    0.6    0.03                                                                             0.1                                                                             1.5 0.6                                                                             0.4 0.1                                                                             0.1 1.0    0.5 5.1

Chromium 7.7    9.3    1.6                                                                             0.2                                                                             9.1 13                                                                             5.8 0.8                                                                             0.9 9.4    0.5 58

Chromium VI 0.8    0.9    0.2                                                                            0.02                                                                             0.9 1.3                                                                             0.6 0.1                                                                             0.1 0.9    0.05 5.8

Cobalt 0.1    0.8    0.1                                                                             0.1                                                                             1.2 3.2                                                                             0.2 0.1                                                                             0.1 1.7    0.1 7.7

Lead 1.8    12    0.4                                                                             0.6                                                                             7.2 3.2                                                                             6.4 0.6                                                                             0.4 8.9    4.7 46

Manganese 8.0    28    15                                                                             3.1                                                                             166 31                                                                             797 3.0                                                                             7.4 84    10 1,153

Mercury 0.2    0.1    0.3                                                                             0.1                                                                             0.9 0.03                                                                             0.2 0.1                                                                             0.2 5.0    0.9 8.0

Nickel 6.6    8.8    3.6                                                                             1.0                                                                             9.3 14                                                                             2.1 1.2                                                                             0.8 5.9    0.6 54

Selenium 0.2    11    0.1                                                                             0.7                                                                             6.3 6.4                                                                             6.1 1.3                                                                             0.4 0.3    1.4 35 Ladle Metallurgy Total 26    75    22                                                                             6.5                                                                             208 83                                                                             820 7.7                                                                              11 118    19 1,395                                                                     (continued)                                                                      Table 6.  (continued) HAP Total Point Source HAP Emissions 2011 by Facility, lb per year

AKS Ashland KY AKS Dearborn    MI AKS Middletown OH AM BurnsHarbor IN AM Cleveland OH AM IN Harbor E IN AM IN Harbor W IN USS Braddock PA USS Ecorse MI USS Gary IN USS GraniteCity IL                                                                       Total HAP Blast Furnace WW Cooling Hydrogen Cyanide 1,200    1,200    154 1,052 1,200 55 1,200 1.5 1,200 0.3 0                                                                           7,263 Sinter Plant Discharge End                   HAP Metals Antimony 0 0 0 1.9 0 0.9 0 0 0 1.8 0 4.6

Arsenic 0 0 0 1.9 0 0.9 0 0 0 2.0 0 4.8

Beryllium 0 0 0 0.5 0 0.4 0 0 0 0.1 0 1.0

Cadmium 0 0 0 0.8 0 0.8 0 0 0 0.9 0 2.5

Chromium 0 0 0 13 0 5.4 0 0 0 35 0 53

Chromium VI 0 0 0 5.1 0 2.1 0 0 0 14 0 21

Cobalt 0 0 0 0.7 0 1.3 0 0 0 1.1 0 3.0

Lead 0 0 0 7.7 0 3.1 0 0 0 28 0 39

Manganese 0 0 0 192 0 104 0 0 0 574 0 869

Mercury 0 0 0 1.0 0 0.2 0 0 0 1.7 0 2.8

Nickel 0 0 0 18 0 8.0 0 0 0 11 0 38

Selenium 0 0 0 4.8 0 4.1 0 0 0 0.4 0 9.3 Sinter Plant Discharge End Total 0 0 0 247 0 131 0 0 0 670 0                                                                           1,048 Sinter Plant Windbox

HAP Metals Antimony 0 0 0 4.5 0 17 0 0 0 6.5 0 28

Arsenic 0 0 0 6.9 0 2.7 0 0 0 138 0 148

Beryllium 0 0 0 1.1 0 0.1 0 0 0 0.5 0 1.7

Cadmium 0 0 0 713 0 1.7 0 0 0 3.1 0 718

Chromium 0 0 0 35 0 13 0 0 0 61 0 108

Chromium VI 0 0 0 13 0 5.0 0 0 0 24 0 42

Cobalt 0 0 0 4.6 0 1.0 0 0 0 3.5 0 9.1

Lead 0 0 0 22,327 0 69 0 0 0 113 0                                                                          22,509

Manganese 0 0 0 188 0 92 0 0 0 70 0 350

Mercury 0 0 0 75 0 9.3 0 0 0 5.5 0 90

Nickel 0 0 0 38 0 9.6 0 0 0 22 0 70

Selenium 0 0 0 158 0 49 0 0 0 20 0 227 Dioxin/Furans 0 0 0 0.038 0                                                                           0.027 0 0 0 0.086 0 0.15 Carbon Disulfide 0 0 0 41,982 0                                                                           4,629 0 0 0 -- 0                                                                          46,611 Carbonyl Sulfide 0 0 0 54,636 0                                                                          33,419 0 0 0 56,357 0                                                                         144,412 Hydrochloric Acid 0 0 0 9,347 0                                                                          13,442 0 0 0 491 0                                                                          23,280 BTEX 0 0 0 19,903 0                                                                         106,667 0 0 0 38,429 0                                                                         164,999 Naphthalene 0 0 0 1,944 0                                                                           1,692 0 0 0 3,752 0                                                                           7,389 PAH 0 0 0 1,345 0                                                                           1,238 0 0 0 1,358 0                                                                           3,941 Sinter Plant Windbox Total 0 0 0 152,723 0                                                                         161,358 0 0 0 100,852 0                                                                         414,932       Total 3,224   2,287   2,775 156,287 3,977                                                                         163,716 3,490 2,125 2,100 108,186 5,612                                                                         453,780   Subtotal Sinter Plant

152,970

                                                                        161,489

101,523

                                                                        415,981    Total - No Sinter 3,224   2,287   2,775 3,317 3,977                                                                           2,227 3,490 2,125 2,100 6,664 5,612                                                                          37,799

                                                                                Table 7.  II&S RTR Point Source 2011 PM Filterable Emissions by Facility and Unit Type (tpy)                                     acility                               PM Filterable (tpy)                                                                            BF/Tested                                      BF/                                     Estimated                                    BF Stoves                                  BOPF Primary                                 BOPF Secondary                                      HMTDS                                Ladle Metallurgy                           Sinter Plant Discharge End                              Sinter Plant Windbox                                 Facility Total AKS-Ashland-KY                                                                                7                                        7                                       27                                       58                                                                               0.3                                                                                101 AKS Dearborn-MI                                        5                                                                                1                                       33                                       25                                        2                                        2                                                                                68 AKS-Middletown-OH                                        3                                                                                6                                       20                                       16                                       11                                       0.3                                                                                56 AM-BurnsHarbor-IN                                        5                                                                               38                                       60                                        7                                        1                                       0.2                                       21                                       229                                       361 AM-Cleveland-OH                                                                                7                                        7                                       60                                       18                                        4                                        4                                                                                101 AM-IndianaHarbor-E                                       13                                                                               20                                       27                                       34                                        5                                        1                                        5                                        6                                       110 AM-IndianaHarbor-W                                        2                                        2                                        8                                       28                                                                               16                                        7                                                                                63 USS-Braddock-PA                                        6                                                                               24                                       15                                        2                                        2                                       0.3                                                                                50 USS-Ecorse-MI                                       17                                                                                6                                       14                                      0.04                                       11                                       0.1                                                                                49 USS-Gary-IN                                       12                                       14                                       239                                       59                                        6                                        2                                        2                                       52                                       10                                       395 USS-GraniteCity-IL                                       17                                                                                3                                       140                                                                                8                                       0.2                                                                                168                                   Unit Total                                       80                                       29                                       361                                       483                                       168                                       61                                       17                                       78                                       245                                                                          Overall Total                                                                                1,520 Note: See the Data Memorandum for details on how the emissions were estimated and the units tested.+