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The EPA requires us to track all chemicals listed by the EPA as Toxic Release Inventory (TRI) substances at all our fossil fuel-fired power plants. Most of the chemicals we report are captured by pollution control equipment or are contained in ash that is stored in ash ponds on site, sold for reuse or sent to the coal mine for reclamation.
In July 1999, we issued our first TRI report to the EPA under the Emergency Planning and Community Right-to-Know Act of 1986 (EPCRA). Previously, the EPA only required companies classified as manufacturing industries to file annual TRI reports. The EPA expanded that list to include electric utilities and six other industry groups.
While TRI quantities reported by APS and other utilities are large, the majority is contained within coal ash used to restore the mine or managed on site.
Coal ash has many beneficial uses and we are working to use much of that ash for use in concrete or related products. When ash is added to concrete products, it enhances the strength and quality of the product. Continued commitment to ash sales will help decrease some of our TRI numbers while providing a useful ingredient for other industries.
APS Reportable Releases - APS Operations
|
|
Lbs. Released to water
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Lbs. Released to air
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Lbs. Released to land
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Total lbs. Released
|
|
Barium
|
0
|
1,634
|
2,780,060
|
2,781,694
|
|
Beryllium
|
88
|
25
|
27,320
|
27,433
|
|
Benzo(ghi)perylene
|
0
|
0.34
|
0
|
0.34
|
|
Chromium
|
0
|
558
|
157,073
|
157,631
|
|
Cobalt
|
0
|
111
|
40,598
|
40,709
|
|
Copper
|
2,384
|
597
|
210,250
|
213,231
|
|
Dioxin
|
0
|
1.65
|
0
|
1.65
|
|
Hydrochloric Acid
|
0
|
203,735
|
0
|
203,735
|
|
Hydrofluoric Acid
|
0
|
351,079
|
0
|
351,079
|
|
Lead
|
3
|
554
|
184,501
|
185,085
|
|
Manganese
|
0
|
1,278
|
455,779
|
457,057
|
|
Mercury
|
0
|
958
|
549
|
1,507
|
|
Nickel
|
1
|
535
|
9,1564
|
9,2100
|
|
PACs
|
0
|
9.73
|
0
|
9.73
|
|
Selenium
|
0
|
3,874
|
2,6636
|
3,0510
|
|
Sulfuric Acid
|
0
|
116,413
|
0
|
116,413
|
|
Vandium
|
0
|
597
|
397,308
|
397,905
|
|
Zinc
|
763
|
2,366
|
173,833
|
176,962
|
|
2003 Total
|
3,239
|
684,328
|
4,545,471*
|
5,233,039
|
|
2002 Total
|
7,405
|
658,932
|
4,014,728
|
4,681,065
|
|
2001 Total
|
8,698
|
805,123
|
4,194,285
|
5,008,106
|
|
2000 Total
|
8,138
|
638,674
|
4,439,800
|
5,086,612
|
|
1999 Total
|
8,434
|
709,497
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4,195,890
|
4,913,812
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* The increase in 2003 can be attributed to two factors: Our company utilized more coal last year and the Cholla Power Plant changed its coal source to a new coal that has more ash in its composition.
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