Environmental Health & Safety Metrics

Following are 2007 environmental, health and safety metrics for Duke Energy.

Health & Safety


Health & Safety Performance

2006

2007

Lost Workday Case Rate (LWCR)

0.35

0.26

Total Incident Case Rate (TICR)

1.51

1.25

Environmental


Regulatory Citations (Includes Duke Energy International)*
  2006 2007
Citations 13 12

Fines/penalties (Dollars)

 $12,713 $15,500
* Of the 12 citations, no fine was associated with eight. Three resulted in fines of $15,500. Finally, the State Environmental Agency of Parana, Brazil has alleged improper maintenance of existing reforested areas. Duke Energy International believes it has properly maintained the areas and will contest the proposed fine of $150,000.


U.S. Reportable Oil Spills 2006 2007
Spills 75 79
Gallons

3,251

28,864


U.S. Coal Combustion Byproducts – CCB (Thousand Tons)*
2006
2007

Total Coal Combustion Byproducts Produced

5,530 6,015

Permanently Disposed

1,990 3,962

Beneficial Use

3,540 2,052
* Generating plants owned and operated by Duke Energy. 


  2005 2006 2007
U.S. Sulfur Dioxide Emissions (Tons)*
  844,500 812,600 684,000
U.S. Nitrogen Oxides Emissions (Tons)*
  160,400 148,600 131,000
Carbon Dioxide Emissions (Thousand Tons)**
U.S. 104,600 102,200 108,500
Latin America 2,600 3,000 3,100
Total 107,200 105,200 111,600
* SO2 and NOx reported from U.S. electric generation based on Dec. 31, 2007 ownership share of stations. Combustion turbines not equipped with continuous emission monitors and facilities operated or owned by Duke Energy Generation Services are not included.
** CO2 reported from U.S. electric generation and Duke Energy International operations, and based on Dec. 31, 2007, ownership share of stations. CO2 emissions increased in 2007 versus 2006 due to U.S. electric generation being about 3.8% higher to meet increased customer demand. The additional generation came from coal and natural gas plants.


Toxic Release Inventory Releases to the Environment (lbs) - Year 2007

Hydrochloric Acid (HCI)

 45,092,576

Hydrogen Fluoride (HF)

 4,023,525

Sulfuric Acid (H2SO4)

 10,183,841

Antimony (Sb)

 38,416

Arsenic (As)

 531,804

Barium (Ba)

 5,224,498

Beryllium (Be)

 108,961

Chromium (Cr)

 1,132,247

Cobalt (Co)

 414,672

Copper (Cu)

 905,884

Lead (Pb)

 760,890

Manganese (Mn)

 1,558,216

Mercury (Hg)

 5,812

Nickel (Ni)

 1,397,000

Selenium (Se)

 132,982

Thallium (TI)

 76,692

Vanadium (V)

 1,893,538

Zinc (Zn)

 1,893,562

Polycyclic Aromatic Compounds

 64

Dioxin-like Compounds (*in grams)

 8*

Ammonia (NH3)

 116,725

The Toxics Release Inventory (TRI) is a public database maintained by the U.S. Environmental Protection Agency (EPA) that contains data on the release of nearly 650 chemicals to the air, water and land. The purpose of the program is to provide people with information about chemicals used, processed or manufactured by facilities that operate in their communities. Duke Energy has reported TRI chemical releases from its fossil-fired electric generating facilities to EPA since 1999. All of Duke Energy’s TRI releases are allowed under state and federal regulations that are designed to protect the environment and public health.

Approximately 85 percent of Duke’s TRI releases are to the air and consist mostly of hydrochloric acid, hydrogen fluoride and sulfuric acid. These chemicals are formed when the naturally occurring chlorine, sulfur, and fluorine in the coal reacts with air during the combustion process. Most of the remaining releases are to land and consist primarily of naturally occurring metals in the coal that remain in the coal ash and other coal combustion byproducts and are disposed of in permitted landfills or coal mines. Small fractions of Duke Energy’s TRI releases are to on-site permitted ash basins or are transferred off-site as part of the coal ash and other coal combustion byproducts that we recycle for various beneficial uses, including the manufacture of wallboard and as an additive in concrete.

The TRI program provides information on the quantity of releases, not the risks those releases may or may not present to the public. The TRI air releases that Duke Energy and the entire electric generating industry produce annually do not translate into large risks to the public. In a February 1998 report to Congress, EPA concluded that utility TRI air releases, though high in volume, present very little risk to the public. This finding was echoed by the Harvard Center for Risk Analysis, which reported in April 1999 that, "Although this industry will report large quantities of emissions, the resulting risk to public health is minimal."