2016 SUSTAINABILITY REPORT

Environmental Performance

Indicator Key

Numbers within each green bar represent the quantifiable GRI indicators included in our Level C report. See the full GRI Index for details.

EN1 (301-1) Materials Consumed (Fiscal Year)

Units and Substances Key
Metric Ton(s): mt

Direct/Indirect

Source (mt)201420152016
Direct Materials Used 57,120(1)43,084(1)31,489
Indirect Materials Used 60,394(1)43,711(1)54,043
Total Materials Used 117,51486,79585,532

Renewable/Non-Renewable

Source (mt)201420152016
Renewable Materials Used11510197
Non-Renewable Materials Used117,399(1)86,528(1)85,435
Total Materials Used117,51486,79585,532

(1) Overall reductions in the 2014 and 2015 totals reflect reduced production due to the closure of the Herculaneum smelter.

EN2 (301-2) Direct Recycled Input Materials (Fiscal Year)

Units and Substances Key
Metric Ton(s): mt
Source (mt)201420152016
Slag14,03620,60013,480
Batteries (mt of Pb)82,86097,58286,091
Lead-Bearing Material33,62137,58236,622
Iron-Containing Material 15,14213,9068,812
Total145,659(1)169,670(1)145,005(1)
Percentage of materials used that are recycled input materials 55%66%63%

(1) Overall fluctuation in materials recycled reflects the availability of materials.

EN3 (302-1) Energy Consumption (Calendar Year)

Direct Non-Renewable Energy Source

Units and Substances Key
Gigajoule(s): GJ
Source (GJ)201420152016
Coke 509,071(1)472,232529,612
Explosives29,28928,27524,486
Natural Gas 218,910(1)151,726131,663
Petroleum Fuel 321,992277,685(2)265,809
Propane587,933532,992486,552
Total Direct Energy Consumption 1,667,196(1)1,462,910(2)1,438,122

Indirect Non-Renewable Energy Source

Source (GJ)201420152016
Electricity1,489,9641,490,7841,434,721
Total Energy Use 3,157,1602,953,694 2,872,843

(1) Reductions following 2014 are due to the closure of the Herculaneum smelter.
(2) Decrease reflects increased fuel efficiency and decreased production at Southeast Missouri Mining and Milling Division.

EN5 (302-3) Energy Intensity of All Sources (Calendar Year)

Units and Substances Key
Metric Ton(s): mt
Gigajoule(s): GJ
Ore: Ore milled at mining operations
Pb: Lead produced at alloying, casting, and secondary smelting and fabricating operations
DivisionUnits201420152016
Southeast Missouri Mining and Milling Division (SEMO)GJ/mt Ore milled0.290.280.35
Metals Division (Resource Recycling, Herculaneum)GJ/mt Pb produced9.29.010.4
Fabricated Products Inc. (FPI)GJ/mt Pb produced1.21.21.4

EN15 (305-1 [scope 1]) Total Direct Greenhouse Gas Emissions (Calendar Year)

Units and Substances
Metric Ton(s) of Carbon Dioxide Equivalent (mt CO2e)
201420152016
Scope 1 (direct emissions of Greenhouse Gases, Carbon Disclosure Project, e.g., direct combustion of fuels)159,400154,411144,778(1)

(1) Overall reduction in 2016 is due to reduced fuel needs due to curtailed production and a warmer winter than usual.

EN16 (305-2 [scope 2]) Total Indirect Greenhouse Gas Emissions (Calendar Year)

Units and Substances
Metric Ton(s) of Carbon Dioxide Equivalent (mt CO2e)
201420152016
Scope 2 (emissions from direct purchase of energy, e.g., electricity) 304,700289,612(1)293,131

(1) Overall reduction in 2015 is due to lower production rates in Herculaneum.

EN17 (305-3) Other Relevant Indirect Greenhouse Gas Emissions (Calendar Year)

Units and Substances
Metric Ton(s) of Carbon Dioxide Equivalent (mt CO2e)
201420152016
Scope 3 (indirect emissions from transportation and employees’ commute, etc.)13,50011,275(1)13,197

(1) Reduction in 2015 is primarily related to reduced travel budgets in that calendar year.

EN18 (305-4) Greenhouse Gas Emission Intensity

Units and Substances Key
Carbon Dioxide Equivalent: CO2e
Ore: Ore milled at mining operations
Pb: Lead produced at alloying, casting, and secondary smelting and fabricating operations
DivisionUnits201420152016
Southeast Missouri Mining and Milling Division (SEMO)mt CO2e/mt Ore milled0.050.050.06
Metals Division (Resource Recycling, Herculaneum) mt CO2e/mt Pb produced1.21.11.4
Fabricated Products Inc. (FPI)mt CO2e/mt Pb produced0.080.080.09

EN21 (305-7) Significant Air Emissions (Calendar Year)

Units and Substances Key
Metric Ton(s): mt
Source (mt by type and weight)201420152016
Ammonia (NH3)0.110.060.06
Antimony (Sb)0.010.000.00
Arsenic (As)0.260.250.26
Cadmium (Cd)0.190.180.17
Carbon Monoxide (CO)10,18111,406(1)15,497(2)
Copper (Cu)0.390.420.33
Hazardous Air Pollutants (HAP) 0.790.651.08
Lead (Pb)8.65.75.1
Nickel (Ni)0.040.030.03
Nitrogen Oxides (NOx)13643(3)36(3)
Particulate Matter (PM)188178199
Sulfur Dioxide (SO2)1,6492,539(1)2,199
Sulfuric Acid (H2SO4)2.52.42.6
Volatile Organic Compounds (VOC) 9.49.48.0
Zinc (Zn)1.11.20.85
Total12,17814,18717,950

(1) An updated emissions factor was used to calculate carbon monoxide and sulfur dioxide emissions in 2015.
(2) Increase reflects a change in production requirements, which can vary year to year.
(3) A change in test methodology in 2015 resulted in an updated NOx emission factor.

EN22 (306-1) Total Water Discharge (Calendar Year)

Units and Substances Key
ppb: parts per billion
Source (average ppb/year) (1)201420152016
Lead12413256
Zinc444431336
Copper664
Total water discharge (million gallons/year)14,34919,33319,837

(1) All data sources represented are reported in average ppb/year to be consistent with permit reporting requirements.