Century Aluminum

AC Stack E.P. Control Device Data

Compliance Test Jan. 24 - 25, 2012

80 156 80 156 80 156 20000 29000 20000 29000 20000 2

Date Time Millitm Marker 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 h

01/24/12 07:01:31 886.0 S 108.2 123.5 125.9 126.2 131.1 129.3 24710.8 24278.5 24096.0 23986.9 25096.0 2401/24/12 07:16:37 468.0 S 101.9 122.4 121.1 125.1 128.2 128.3 23710.8 24403.4 24300.9 24044.6 24941.6 2401/24/12 07:31:37 332.0 S 123.8 122.3 126.5 125.1 135.9 129.0 24891.1 24397.0 24044.1 24054.2 25262.0 2401/24/12 07:46:37 523.0 S 124.8 118.5 127.3 125.3 123.4 127.7 24582.4 24635.7 24044.1 24070.0 24710.8 2401/24/12 08:01:37 590.0 S 126.3 118.7 115.0 123.7 266.8 146.8 25211.4 24730.2 24185.5 24140.6 22570.7 2401/24/12 08:16:36 891.0 S 120.4 119.0 239.6 137.9 120.7 144.9 25313.9 24759.1 20801.6 23727.1 24710.8 2401/24/12 08:31:32 692.0 S 104.0 116.4 127.7 138.7 131.5 147.2 23710.8 24602.0 24416.3 23743.2 25364.5 2401/24/12 08:46:32 259.0 S 115.8 115.7 125.7 138.6 134.0 146.5 24878.1 24626.1 23852.1 23717.6 25287.9 2401/24/12 09:01:42 137.0 S 123.2 117.5 123.8 138.3 133.8 146.8 24826.2 24640.6 23941.6 23698.3 25325.6 2401/24/12 09:16:32 470.0 S 124.6 120.4 125.5 138.9 135.7 147.8 24339.8 24719.2 23878.1 23645.4 25479.9 2401/24/12 09:32:17 510.0 S 108.4 118.4 127.3 139.0 132.7 147.3 24518.8 24672.7 23980.5 23637.5 25338.5 2401/24/12 09:46:37 862.0 S 125.5 118.5 125.9 138.8 363.9 177.4 24660.2 24682.4 24083.0 23642.3 22186.8 2401/24/12 10:01:43 116.0 S 106.9 116.1 117.5 139.1 133.8 160.8 24429.3 24584.6 23403.4 23544.6 25108.9 2401/24/12 10:16:32 276.0 S 126.5 116.9 111.7 123.1 121.5 160.9 24237.4 24450.1 23826.2 23922.7 23378.7 2401/24/12 10:31:37 921.0 S 123.6 119.3 127.9 123.2 131.7 160.9 24544.7 24554.3 24031.1 23874.5 25223.1 2401/24/12 10:46:38 113.0 S 389.3 153.5 117.1 122.1 137.9 161.4 18097.3 23706.7 23429.3 23821.7 25492.9 2401/24/12 11:01:38 195.0 S 125.0 153.7 121.7 121.8 128.2 160.7 24505.8 23666.7 24185.5 23852.1 25441.0 2401/24/12 11:16:38 215.0 S 116.1 152.7 113.8 120.4 125.7 159.4 24980.5 23746.8 24275.0 23901.8 24954.6 2401/24/12 11:31:37 953.0 S 125.5 154.8 119.6 119.4 107.1 156.2 24941.6 23799.6 24403.4 23954.6 24954.6 2401/24/12 11:46:37 660.0 S 120.7 154.2 127.3 119.6 115.2 125.1 24839.2 23822.0 24019.5 23946.7 24249.0 2401/24/12 12:04:13 256.0 S 109.6 154.6 120.0 119.9 306.8 146.8 24557.7 23838.0 24083.0 24031.6 20712.1 2401/24/12 12:16:37 887.0 S 111.5 152.7 114.4 120.2 121.1 146.7 24595.3 23882.8 23826.2 24031.6 24416.3 2401/24/12 12:31:37 782.0 S 126.3 153.0 105.6 117.4 129.6 146.5 24455.3 23871.6 22686.1 23863.5 24902.7 2401/24/12 12:46:37 802.0 S 126.9 120.2 127.5 118.7 134.0 146.0 24736.7 24701.5 24455.3 23991.7 25198.4 2401/24/12 13:01:38 165.0 S 119.6 119.5 126.1 119.3 130.0 146.2 24736.7 24730.4 24159.5 23988.5 24967.6 2401/24/12 13:16:37 966.0 S 124.8 120.6 122.9 120.4 136.5 147.5 24429.3 24661.5 24326.8 23995.0 25108.9 2401/24/12 13:31:38 595.0 S 125.7 120.6 125.9 121.2 127.3 150.1 24429.3 24597.4 24275.0 23978.9 24736.7 2401/24/12 13:46:42 896.0 S 123.4 121.0 123.4 120.7 139.6 153.1 24429.3 24546.2 24146.6 23994.8 25211.4 2401/24/12 14:01:43 650.0 S 113.8 121.5 121.1 120.9 133.8 131.5 24865.1 24584.6 24403.4 24034.9 25390.4 2401/24/12 14:16:43 389.0 S 115.2 122.0 116.5 121.1 119.6 131.3 24915.7 24624.7 24403.4 24107.0 24416.3 2401/24/12 14:49:38 489.0 S 122.1 119.3 125.4 122.1 138.2 131.8 25005.2 24707.8 24339.8 24275.1 25120.6 2501/24/12 15:01:33 714.0 S 123.6 119.8 120.9 121.5 136.3 132.6 24941.6 24733.5 24505.8 24318.4 25108.9 2501/24/12 15:17:23 827.0 S 125.2 119.8 122.9 121.5 139.6 133.0 24839.2 24784.7 24492.9 24339.2 25223.1 2501/24/12 15:31:38 769.0 S 125.5 119.8 110.2 119.5 136.5 134.1 24980.5 24853.6 24070.0 24313.6 25133.6 2501/24/12 15:46:33 273.0 S 103.6 117.3 126.1 119.8 139.2 134.1 24762.6 24895.3 24544.7 24363.3 25223.1 2501/24/12 16:01:38 980.0 S 80.8 113.2 122.9 120.1 136.9 134.4 23634.2 24741.4 24582.4 24385.7 25313.9 2501/24/12 16:16:43 453.0 S 122.9 114.2 115.8 120.0 133.6 136.2 24954.6 24746.3 23762.6 24305.6 24967.6 2501/24/12 16:31:43 207.0 S 125.5 116.2 118.4 120.3 134.2 136.8 25057.1 24771.9 24800.3 24387.3 25005.2 2501/24/12 16:46:43 617.0 S 0.0 100.9 0.0 104.6 0.0 119.5 0.0 21646.2 898.8 21457.2 1193.3 2201/24/12 17:01:43 371.0 S 122.5 100.7 123.1 104.9 137.9 119.7 25569.4 21724.7 25133.6 21535.7 25325.6 2201/24/12 17:16:58 860.0 S 123.1 100.5 118.4 104.4 133.2 118.9 25275.0 21779.2 24902.7 21586.9 25416.3 2201/24/12 17:31:43 848.0 S 120.0 99.8 122.3 105.9 134.4 118.7 25262.0 21814.4 24697.8 21665.4 25146.6 22

Sec. Current Mod.1A 

Field 1 - milliamps

Sec. Current Mod.1A 

Field 2 - milliamps

Sec. Current Mod.1A 

Field 3 - milliamps

Voltage Mod. 1A Field 

1 - volts

Voltage Mod. 1A Field 

2 - volts

Voltage Mod. 1

3 - volts

1 of 14
Century Aluminum

AC Stack E.P. Control Device Data

Compliance Test Jan. 24 - 25, 2012

80 156 80 156 80 156 20000 29000 20000 29000 20000 2

Date Time Millitm Marker 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 h

Sec. Current Mod.1A 

Field 1 - milliamps

Sec. Current Mod.1A 

Field 2 - milliamps

Sec. Current Mod.1A 

Field 3 - milliamps

Voltage Mod. 1A Field 

1 - volts

Voltage Mod. 1A Field 

2 - volts

Voltage Mod. 1

3 - volts

01/24/12 17:46:38 962.0 S 121.7 102.0 115.4 104.5 115.0 115.6 25390.4 21892.8 24531.8 21663.8 23904.0 2201/24/12 18:01:39 44.0 S 109.8 105.7 123.1 104.6 118.4 113.3 24006.5 21939.4 24878.1 21700.7 24044.1 21

01/24/12 18:17:33 563.0 S 94.2 102.1 121.7 105.3 123.6 112.1 24800.3 21920.1 24993.5 21854.6 24557.7 21

01/24/12 18:31:39 237.0 S 120.7 101.5 118.8 105.3 129.4 111.5 25313.9 21952.2 24980.5 21877.1 25031.1 2101/24/12 18:46:34 501.0 S 120.6 116.6 266.3 138.6 135.5 128.4 25249.0 25108.3 21237.4 24419.4 25403.4 2401/24/12 19:01:39 602.0 S 122.9 116.6 124.2 138.8 134.2 128.0 25172.5 25058.7 24813.2 24379.4 25377.4 2401/24/12 19:16:38 794.0 S 121.9 116.5 122.1 139.2 131.7 127.8 25185.5 25047.5 25044.1 24397.0 25108.9 2401/24/12 19:31:38 907.0 S 81.3 111.6 121.9 139.2 137.7 128.2 24146.6 24908.1 25005.2 24435.5 25429.3 24

01/24/12 19:46:39 662.0 S 123.4 111.9 123.6 140.2 136.9 130.9 25172.5 24880.8 24813.2 24470.7 25505.8 2501/24/12 20:01:39 400.0 S 101.5 110.8 116.1 139.4 135.7 133.1 24980.5 25002.6 24865.1 24469.0 25595.3 2501/24/12 20:16:39 654.0 S 101.5 110.8 116.1 139.4 135.7 133.1 24980.5 25002.6 24865.1 24469.0 25595.3 2501/24/12 20:31:44 174.0 S 120.6 113.5 122.5 139.9 138.1 135.7 25505.8 25124.4 25005.2 24481.7 25684.8 2501/24/12 20:46:39 194.0 S 120.6 113.5 122.5 139.9 138.1 135.7 25505.8 25124.4 25005.2 24481.7 25684.8 2501/24/12 21:01:39 213.0 S 121.7 112.6 123.1 121.6 138.4 134.5 25377.4 25186.8 24826.2 24936.8 24723.7 2501/24/12 21:16:39 249.0 S 122.1 112.7 123.6 121.8 132.9 134.6 25351.5 25207.5 24878.1 24916.0 25313.9 2501/24/12 21:31:39 378.0 S 122.1 112.7 123.6 121.8 132.9 134.6 25351.5 25207.5 24878.1 24916.0 25313.9 25

01/25/12 07:03:20 965.0 S 137.5 143.2 113.2 104.2 134.2 127.8 10626.5 3655.5 24660.2 24594.2 25621.3 2401/25/12 07:17:01 783.0 S 109.6 140.2 117.9 107.5 132.5 128.8 25390.4 6654.5 23954.6 24506.0 25223.1 2401/25/12 07:31:46 818.0 S 118.8 138.4 126.9 110.9 138.6 128.5 25441.0 9651.9 24172.5 24482.0 25543.4 2401/25/12 07:46:56 635.0 S 116.5 126.0 124.0 112.8 138.4 131.1 25390.4 11800.3 24159.5 24440.3 25531.8 2401/25/12 08:02:01 389.0 S 107.5 122.7 119.8 115.5 124.2 132.9 17713.4 13857.3 24762.6 24467.6 25338.5 2401/25/12 08:16:46 831.0 S 169.4 127.4 117.3 116.0 160.0 138.2 9792.5 14959.5 24826.2 24446.7 23198.4 2401/25/12 08:31:41 507.0 S 104.0 123.7 114.2 118.6 129.8 140.2 23326.8 17695.7 23826.2 24403.4 25454.0 2401/25/12 08:46:41 651.0 S 117.5 122.6 126.5 120.0 136.5 136.8 25108.9 20348.7 23941.6 24287.9 25313.9 2501/25/12 09:01:41 343.0 S 116.9 120.0 123.6 121.3 133.1 136.6 25198.4 22170.2 24031.1 24209.3 24993.5 2501/25/12 09:16:41 581.0 S 119.6 121.3 126.3 122.3 135.5 137.0 25083.0 22131.8 23891.1 24201.4 25159.5 2501/25/12 09:31:41 507.0 S 120.0 121.4 125.5 122.2 599.6 194.6 24902.7 22064.5 23839.2 24159.7 18097.3 2401/25/12 09:46:46 543.0 S 121.3 122.0 127.9 122.6 135.0 194.2 24736.7 21982.8 23852.1 24121.3 25262.0 2401/25/12 10:02:12 343.0 S 121.3 123.7 126.9 123.5 141.1 196.3 24915.7 22883.1 23928.7 24017.0 25249.0 2401/25/12 10:16:37 4.0 S 122.5 117.9 121.3 124.0 117.7 191.0 24736.7 24751.1 22712.1 23752.8 24134.9 2401/25/12 10:31:41 540.0 S 111.5 118.8 129.0 125.9 141.1 192.5 24749.7 24929.0 23019.5 23651.9 25287.9 2401/25/12 10:46:41 731.0 S 135.4 121.1 126.9 125.9 120.4 190.4 1847.0 22021.2 23621.3 23611.9 24967.6 2401/25/12 11:04:51 842.0 S 136.5 123.5 112.7 124.6 127.3 189.7 2756.2 19216.0 20609.6 23184.2 25621.3 2401/25/12 11:16:42 224.0 S 134.2 125.3 111.9 122.8 105.0 185.9 2858.6 16437.9 23749.7 23166.5 23762.6 2401/25/12 11:31:47 415.0 S 150.9 129.2 126.5 122.9 121.7 126.2 6037.6 14079.8 24352.8 23230.7 25083.0 2401/25/12 11:46:37 216.0 S 331.3 155.4 128.1 122.9 130.9 125.6 10125.8 12253.4 24070.0 23257.9 24839.2 2401/25/12 12:01:46 970.0 S 93.1 151.9 126.7 122.9 137.5 125.2 19341.1 11556.6 22468.2 23075.4 24891.1 2401/25/12 12:16:36 928.0 S 104.6 149.7 128.4 123.8 141.1 128.1 24980.5 11587.1 23826.2 23214.7 24800.3 2401/25/12 12:31:37 57.0 S 117.9 150.5 127.5 123.6 138.4 127.8 25172.5 11639.9 23801.6 23312.4 24749.7 2401/25/12 12:46:42 103.0 S 118.2 148.3 122.1 123.0 140.5 130.3 25031.1 14537.9 23723.7 23325.2 24775.6 2401/25/12 13:01:42 189.0 S 0.4 131.3 0.4 109.0 0.6 114.5 27.2 14196.8 1.3 20749.2 1.3 21

2 of 14
Century Aluminum

AC Stack E.P. Control Device Data

Compliance Test Jan. 24 - 25, 2012

Date Time

01/24/12 07:01:3101/24/12 07:16:3701/24/12 07:31:3701/24/12 07:46:3701/24/12 08:01:3701/24/12 08:16:3601/24/12 08:31:3201/24/12 08:46:3201/24/12 09:01:4201/24/12 09:16:3201/24/12 09:32:1701/24/12 09:46:3701/24/12 10:01:4301/24/12 10:16:3201/24/12 10:31:3701/24/12 10:46:3801/24/12 11:01:3801/24/12 11:16:3801/24/12 11:31:3701/24/12 11:46:3701/24/12 12:04:1301/24/12 12:16:3701/24/12 12:31:3701/24/12 12:46:3701/24/12 13:01:3801/24/12 13:16:3701/24/12 13:31:3801/24/12 13:46:4201/24/12 14:01:4301/24/12 14:16:4301/24/12 14:49:3801/24/12 15:01:3301/24/12 15:17:2301/24/12 15:31:3801/24/12 15:46:3301/24/12 16:01:3801/24/12 16:16:4301/24/12 16:31:4301/24/12 16:46:4301/24/12 17:01:4301/24/12 17:16:5801/24/12 17:31:43

80 156 80 156 20000 29000 20000 29000 20000 29000 80 156 80 

15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

335.5 154.2 333.6 179.6 22980.5 23475.8 18994.8 23434.0 17418.9 18889.1 150.2 146.4 117.5 433.2 188.0 95.2 172.2 23749.7 23411.8 19955.9 23019.1 19700.4 19195.2 149.0 146.7 126.5 105.0 186.7 108.1 172.9 20199.7 22900.8 24466.9 22963.0 21199.7 19259.4 146.1 146.3 132.7 108.1 187.2 327.4 201.6 23686.1 22886.3 24621.3 22969.5 17776.9 19003.1 136.5 144.4 309.1 

0.0 174.4 0.0 183.0 5896.2 20645.1 6832.7 20803.7 3398.2 17149.6 119.6 141.2 134.6 

86.7 171.1 288.2 175.7 23775.6 21015.2 24108.9 20693.1 18110.2 17301.7 0.0 123.0 1.4 

106.0 159.6 80.8 168.1 23224.4 20901.4 24941.6 21051.9 18520.1 17205.6 137.5 122.5 139.4 103.6 159.7 212.1 180.7 23699.1 20901.4 24429.3 21043.9 19238.7 16920.4 147.7 123.3 127.9 275.7 152.3 99.6 151.4 21417.6 20706.1 21866.4 21402.9 20892.3 17354.6 146.9 122.9 227.8 111.7 112.1 164.4 160.1 23121.9 20627.6 24300.9 21946.0 16854.7 16998.9 146.7 122.6 109.2 131.9 115.5 151.9 165.5 21199.7 20752.6 20533.1 21454.3 16547.3 16417.3 148.1 122.9 135.0 

91.5 113.4 183.2 147.5 23185.5 20690.0 23570.7 21323.0 19789.9 16668.9 140.0 123.3 121.3 

120.2 128.4 104.0 160.5 22186.8 22726.3 24762.6 23564.2 19494.2 18680.9 174.8 130.2 222.6 133.4 134.3 93.1 136.1 23326.8 22670.2 24557.7 23620.3 20443.6 18972.6 158.8 150.0 134.2 136.1 138.0 95.0 137.9 22967.6 22638.1 24582.4 23575.4 20622.6 19235.4 148.4 151.4 106.7 

99.4 137.5 89.0 122.5 23300.9 22588.4 24019.5 23524.2 20147.9 19349.1 148.6 151.5 109.2 

105.2 116.2 84.8 120.7 19815.8 22388.1 23211.4 23692.3 18110.2 19001.3 144.4 151.2 118.2 282.6 137.5 159.4 120.1 23583.7 22445.8 21468.2 23338.2 17201.0 19044.6 0.0 132.9 0.0 282.6 137.5 159.4 120.1 23583.7 22445.8 21468.2 23338.2 17201.0 19044.6 0.0 132.9 0.0 113.8 163.9 153.8 109.0 23455.3 22835.1 21520.1 23304.5 17802.9 19216.0 155.5 134.8 128.1 119.2 163.8 101.7 108.8 23647.2 23017.7 24492.9 23270.8 19482.5 19214.5 148.8 131.6 132.9 352.2 191.2 89.8 108.3 23403.4 23027.2 17674.4 22410.3 19905.3 19147.2 132.7 128.3 109.2 106.3 187.4 257.8 128.7 23263.3 23064.2 23993.5 22336.7 16815.8 18671.4 160.9 129.9 109.6 126.3 190.8 243.8 148.0 20328.1 22692.6 24800.3 22434.3 16585.0 18226.0 145.4 129.4 109.4 218.2 204.9 111.5 151.4 21147.9 22859.1 21930.0 22274.2 21134.9 18604.1 136.7 128.5 120.6 206.5 195.4 103.6 144.4 23263.3 22819.1 22173.8 22362.4 20622.6 19031.8 139.4 145.9 124.6 135.0 172.2 227.6 161.2 23121.9 22703.8 24455.3 22630.0 17623.9 18746.6 131.5 143.9 128.4 331.1 199.4 113.6 156.2 22904.0 22634.9 22211.4 22716.4 21302.2 19184.0 131.9 140.9 122.7 

0.0 184.5 0.0 143.5 8088.2 20690.0 10343.7 20947.8 6255.5 17530.6 143.8 140.3 135.2 

99.6 152.9 118.2 147.0 23287.9 20675.6 23954.6 21732.8 19404.7 17468.1 0.0 123.7 0.6 

147.5 155.1 157.1 143.7 23736.7 21196.2 22455.3 21492.5 16457.8 17506.6 148.4 122.5 135.5 101.7 140.5 103.1 142.7 23839.2 21532.6 24031.1 21755.2 20827.5 17468.2 147.7 123.9 212.8 110.6 128.6 106.3 143.0 23980.5 21622.2 24313.9 22022.7 20315.2 17429.8 154.4 125.8 107.9 113.1 125.8 548.1 183.1 23954.6 21726.3 24749.7 22059.5 15124.5 17117.4 152.3 128.4 119.0 118.8 99.3 233.6 198.1 22237.4 21643.0 24660.2 22365.6 17585.0 16652.7 145.9 130.1 134.8 463.7 157.2 370.1 244.3 24237.4 23661.6 20981.8 23695.4 12509.7 17434.5 144.0 130.2 120.4 115.2 159.2 110.4 243.4 24070.0 23759.4 24928.7 23817.1 21289.2 17670.1 148.8 148.8 102.5 101.0 158.9 95.4 215.5 23904.0 23745.0 24249.0 23796.2 19559.0 17958.5 147.9 148.7 124.2 109.8 154.2 93.8 207.6 23980.5 23775.5 24723.7 24079.8 20622.6 18479.1 149.8 148.8 135.9 102.7 154.3 91.7 206.2 23416.3 23722.6 24852.1 24182.4 19585.0 18323.8 147.1 148.8 136.1 109.0 154.2 121.1 208.0 24557.7 23794.7 24891.1 24254.5 18610.9 18110.7 149.4 148.1 483.9 114.4 154.3 112.3 153.6 24313.9 23839.7 24967.6 24281.8 21404.7 18895.8 145.2 147.3 154.6 

Sec. Current Mod.2A 

Field 1 - milliamps

Sec. Cur

Field 2 

Sec. Current Mod.1B 

Field 2 - milliamps

Sec. Current Mod.1B 

Field 3 - milliamps

Voltage Mod. 1B Field 

1 - volts

Voltage Mod. 1B Field 

2 - volts

Voltage Mod. 1B Field 

3 - volts

3 of 14
Century Aluminum

AC Stack E.P. Control Device Data

Compliance Test Jan. 24 - 25, 2012

Date Time

01/24/12 17:46:3801/24/12 18:01:3901/24/12 18:17:3301/24/12 18:31:3901/24/12 18:46:3401/24/12 19:01:3901/24/12 19:16:3801/24/12 19:31:3801/24/12 19:46:3901/24/12 20:01:3901/24/12 20:16:3901/24/12 20:31:4401/24/12 20:46:3901/24/12 21:01:3901/24/12 21:16:3901/24/12 21:31:39

01/25/12 07:03:2001/25/12 07:17:0101/25/12 07:31:4601/25/12 07:46:5601/25/12 08:02:0101/25/12 08:16:4601/25/12 08:31:4101/25/12 08:46:4101/25/12 09:01:4101/25/12 09:16:4101/25/12 09:31:4101/25/12 09:46:4601/25/12 10:02:1201/25/12 10:16:3701/25/12 10:31:4101/25/12 10:46:4101/25/12 11:04:5101/25/12 11:16:4201/25/12 11:31:4701/25/12 11:46:3701/25/12 12:01:4601/25/12 12:16:3601/25/12 12:31:3701/25/12 12:46:4201/25/12 13:01:42

80 156 80 156 20000 29000 20000 29000 20000 29000 80 156 80 

15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

Sec. Current Mod.2A 

Field 1 - milliamps

Sec. Cur

Field 2 

Sec. Current Mod.1B 

Field 2 - milliamps

Sec. Current Mod.1B 

Field 3 - milliamps

Voltage Mod. 1B Field 

1 - volts

Voltage Mod. 1B Field 

2 - volts

Voltage Mod. 1B Field 

3 - volts

99.8 151.9 99.2 136.8 24287.9 24096.0 24185.5 24222.4 20609.6 19273.8 154.2 148.3 102.9 

107.9 107.5 110.0 104.2 24492.9 24127.9 24749.7 24693.4 21263.3 20368.0 144.2 148.3 89.8 117.7 107.8 207.5 116.4 24146.6 24137.5 25108.9 24716.0 18482.5 20017.2 143.1 147.6 104.8 125.5 110.8 520.0 169.5 24185.5 24172.7 24839.2 24789.7 13368.4 19243.4 130.9 145.5 101.3 130.0 113.4 131.1 174.1 23941.6 24167.8 25133.6 24841.0 21430.6 19344.4 132.1 143.3 201.9 137.9 117.8 95.2 174.6 24044.1 24246.3 25108.9 24873.1 20661.5 19478.9 157.1 144.5 74.2 120.6 119.2 103.4 172.3 24198.4 24201.4 24762.6 24857.0 20583.7 19725.5 154.4 145.1 431.2 104.0 117.9 113.2 172.5 22326.8 23953.0 24146.6 24754.4 21686.1 19760.7 146.7 145.3 100.0 136.1 122.5 186.1 183.3 24198.4 23941.8 24928.7 24847.3 18225.7 19462.7 147.1 144.4 114.2 134.6 125.8 99.0 182.0 24275.0 23914.6 24928.7 24869.7 20968.9 19425.9 145.4 144.6 121.7 134.6 125.8 99.0 182.0 24275.0 23914.6 24928.7 24869.7 20968.9 19425.9 145.4 144.6 121.7 110.0 109.1 87.9 102.0 21430.6 20569.7 24915.7 21766.4 20173.8 17966.3 0.0 128.5 0.0 110.0 109.1 87.9 102.0 21430.6 20569.7 24915.7 21766.4 20173.8 17966.3 0.0 128.5 0.0 119.0 107.8 102.1 98.4 24031.1 20580.9 24710.8 21713.5 21019.5 17914.9 145.4 130.2 128.1 127.9 105.6 107.7 99.7 24492.9 20659.4 24660.2 21657.4 20981.8 17954.9 147.3 129.0 99.8 127.9 105.6 107.7 99.7 24492.9 20659.4 25120.6 21702.2 21289.2 18043.1 147.9 128.1 116.7 

92.9 117.1 109.6 105.3 23891.1 23713.2 23390.4 24276.8 21455.3 20523.3 195.3 154.5 127.1 93.6 115.2 97.1 106.1 24031.1 23674.6 23468.2 24148.7 20609.6 20507.3 152.1 156.5 124.8 88.6 111.3 108.8 107.9 24108.9 23673.0 23505.8 24041.3 21352.8 20619.3 140.0 155.7 87.5 

131.7 113.5 173.8 116.7 23788.6 23578.5 24608.3 24070.2 19238.7 20404.7 124.8 152.1 297.2 

0.0 97.1 0.0 104.4 0.0 20547.3 0.0 21008.6 0.0 17804.5 138.4 153.3 129.0 

101.9 94.0 92.3 98.7 24211.4 21002.3 24621.3 21031.0 20853.4 18124.8 0.0 136.2 0.6 245.5 110.8 95.4 98.8 23813.2 20989.3 23160.8 20925.3 20904.0 18155.2 153.2 133.4 123.1 116.9 108.9 333.8 126.3 24083.0 20990.9 24159.5 20864.3 18238.7 17831.6 127.5 128.9 134.8 205.7 123.0 254.9 144.5 19149.2 20398.2 23429.3 20869.2 17123.2 17290.0 156.3 124.0 244.4 129.8 127.5 106.1 145.6 24083.0 20404.7 24466.9 20994.0 21019.5 17341.3 150.4 123.8 101.5 151.5 135.4 107.1 145.4 23813.2 20367.7 23365.8 20976.5 21097.3 17309.3 147.5 124.8 121.1 127.5 134.8 100.0 136.2 23326.8 20310.0 24313.9 20939.7 20596.6 17479.1 140.7 126.8 136.9 106.7 148.2 256.1 168.2 23505.8 23248.2 23468.2 23873.2 17162.1 19624.4 153.1 128.6 137.3 127.3 151.4 105.6 169.9 23762.6 23192.1 24172.5 23817.1 20968.9 19638.8 137.3 145.7 111.1 118.6 135.5 99.2 170.3 23570.7 23161.8 24185.5 23945.2 20609.6 19602.0 142.5 144.4 149.4 138.6 138.2 105.0 141.8 23518.8 23091.3 24377.4 23972.4 21097.3 19959.3 131.9 144.9 136.5 118.4 127.3 111.3 123.8 20199.7 23222.6 23390.4 23967.6 20968.9 20440.0 149.8 144.1 109.6 115.4 125.5 98.4 122.8 24108.9 23225.8 24582.4 23982.0 19199.7 20212.5 0.0 125.3 1.0 114.6 120.9 103.1 122.3 21853.4 22980.9 24339.8 24103.8 20930.0 20191.6 136.7 124.0 131.9 101.1 117.6 94.4 121.6 24159.5 23085.0 23468.2 23998.1 20007.8 20118.0 145.0 124.5 112.3 

85.6 115.0 113.1 103.8 24262.0 23179.5 23096.0 23951.5 21006.5 20598.6 132.5 121.9 129.8 

126.5 114.9 104.6 103.6 23878.1 23193.9 24364.5 23975.5 20596.6 20552.0 140.2 122.3 118.6 133.2 116.7 103.4 104.2 24006.5 23248.4 20559.0 23522.2 20572.0 20547.3 130.0 120.7 147.3 279.2 134.3 104.8 104.1 24031.1 23312.4 22108.9 23238.7 20546.0 20478.4 128.1 120.3 142.7 562.5 189.8 151.3 109.1 23891.1 23773.8 19123.2 22705.3 15701.7 19820.0 139.4 119.0 112.3 

4 of 14
Century Aluminum

AC Stack E.P. Control Device Data

Compliance Test Jan. 24 - 25, 2012

Date Time

01/24/12 07:01:3101/24/12 07:16:3701/24/12 07:31:3701/24/12 07:46:3701/24/12 08:01:3701/24/12 08:16:3601/24/12 08:31:3201/24/12 08:46:3201/24/12 09:01:4201/24/12 09:16:3201/24/12 09:32:1701/24/12 09:46:3701/24/12 10:01:4301/24/12 10:16:3201/24/12 10:31:3701/24/12 10:46:3801/24/12 11:01:3801/24/12 11:16:3801/24/12 11:31:3701/24/12 11:46:3701/24/12 12:04:1301/24/12 12:16:3701/24/12 12:31:3701/24/12 12:46:3701/24/12 13:01:3801/24/12 13:16:3701/24/12 13:31:3801/24/12 13:46:4201/24/12 14:01:4301/24/12 14:16:4301/24/12 14:49:3801/24/12 15:01:3301/24/12 15:17:2301/24/12 15:31:3801/24/12 15:46:3301/24/12 16:01:3801/24/12 16:16:4301/24/12 16:31:4301/24/12 16:46:4301/24/12 17:01:4301/24/12 17:16:5801/24/12 17:31:43

20000 29000 20000 29000 20000 29000 80 156 80 156 80 156 20000 

15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2461.7 2126.9 21315.2 20443.1 25185.5 24984.9 269.0 169.1 85.4 144.8 127.3 148.4 17406.0 1936.4 2192.6 21699.1 21168.8 25172.5 24880.8 352.6 190.1 107.5 142.0 139.0 147.4 16931.3 1936.4 2192.6 21699.1 21168.8 25172.5 24880.8 352.6 190.1 107.5 142.0 139.0 147.4 16931.3 3320.4 2354.4 18853.4 20994.2 23378.7 24858.5 117.3 186.4 108.8 144.7 179.6 147.3 18661.5 3435.8 2452.2 19520.1 20761.8 17981.8 23916.3 234.0 201.7 84.0 136.9 197.1 154.4 15867.7 

0.0 2476.2 0.0 18083.2 0.0 20930.1 257.2 203.4 475.8 149.5 130.5 155.9 15573.3 

3808.0 2697.3 21121.9 18136.0 20507.1 20294.1 0.4 190.2 1.0 132.8 1.0 138.2 14.3 1577.2 2567.4 21609.6 18177.7 15636.8 19145.4 160.4 191.7 76.9 130.1 158.0 140.5 17649.8 2167.3 2530.6 18968.9 17884.4 25275.0 19156.6 196.7 182.7 115.6 133.8 230.9 153.5 16700.4 2167.3 2530.6 18968.9 17884.4 25275.0 19156.6 196.7 182.7 115.6 133.8 230.9 153.5 16700.4 1757.5 2343.2 20763.9 17977.5 25390.4 19182.2 117.9 157.7 103.4 135.4 143.2 149.1 17238.7 4396.9 2463.4 21084.3 18173.0 24891.1 20045.9 336.4 170.5 110.4 138.7 116.7 139.0 14906.6 3076.5 2347.9 19456.6 17942.3 21352.8 19552.4 227.8 181.2 116.9 140.7 156.9 134.7 16854.7 4577.2 2920.1 21339.8 20609.8 22404.7 22353.0 128.6 165.1 101.7 93.9 108.6 131.9 17981.8 1744.5 2662.1 20622.6 20547.3 20097.3 22301.7 266.3 198.3 112.5 107.9 101.7 144.5 15996.1 1949.4 2708.7 20827.5 20449.6 21942.9 23090.0 116.5 192.8 114.4 112.6 188.8 148.4 17508.4 2551.2 2756.6 21071.3 20712.4 24172.5 22952.2 176.7 190.3 118.6 112.9 156.1 139.0 16918.3 

0.0 2506.6 0.0 18145.8 0.0 20031.5 265.7 204.5 116.9 111.9 155.0 140.9 11945.5 0.0 2506.6 0.0 18145.8 0.0 20031.5 265.7 204.5 116.9 111.9 155.0 140.9 11945.5 

3936.4 2476.3 21455.3 18185.6 20559.0 19179.2 202.5 173.0 112.5 99.2 174.2 130.2 16457.8 2962.4 2462.1 21263.3 18411.5 23198.4 19409.9 154.8 163.9 120.7 99.7 147.5 129.0 17046.7 3590.1 2338.7 21071.3 18377.9 23287.9 19520.3 157.7 167.5 115.4 101.4 118.8 130.3 16931.3 3590.1 2338.7 21071.3 18377.9 23287.9 19520.3 157.7 167.5 115.4 101.4 118.8 130.3 16931.3 2577.2 2442.8 21328.1 18466.1 25236.1 20162.6 217.5 161.4 115.4 101.7 122.1 132.8 16072.6 3448.8 2671.9 21186.8 18507.8 25031.1 20697.6 121.3 161.9 151.1 102.2 140.7 122.8 17994.8 3448.8 2671.9 21186.8 18507.8 25031.1 20697.6 121.3 161.9 151.1 102.2 140.7 122.8 17994.8 4448.8 3567.6 21430.6 21258.8 23865.1 23668.0 356.6 190.2 114.2 112.2 140.4 138.8 15841.8 2962.4 3445.8 21237.4 21231.5 21237.4 23752.8 151.9 183.9 90.2 109.4 182.1 139.8 16573.3 2385.2 3373.7 21199.7 21223.6 23749.7 23821.7 127.1 180.4 91.5 105.8 224.6 149.4 17508.4 

27.2 2928.3 1.3 18589.8 0.0 20910.7 89.4 171.9 123.1 106.7 185.7 157.8 17674.4 

1346.3 2585.4 21762.6 18716.3 23865.1 20233.1 109.6 136.5 96.0 93.6 179.4 149.4 18328.1 2884.6 2514.9 20365.8 18613.6 25647.2 20310.1 91.5 132.8 115.0 89.1 164.0 152.3 17469.5 3564.2 2373.9 21212.7 18604.1 24595.3 20534.4 249.0 146.9 116.1 93.3 157.3 154.2 15444.9 2884.6 2178.3 21840.5 18655.3 21775.6 20273.2 131.9 118.8 332.8 120.6 168.2 157.7 18931.3 1334.6 1974.9 21738.0 18717.9 24326.8 20659.4 108.8 113.4 111.7 123.3 166.1 155.7 18968.9 1590.1 1875.5 21648.5 18774.0 24339.8 20733.1 155.2 116.9 114.0 126.1 151.1 146.5 19725.0 1834.0 2101.3 21212.7 21425.4 24839.2 23838.0 182.5 128.6 112.7 124.8 136.7 140.4 17636.8 1936.4 2171.9 21801.6 21447.8 25889.8 24409.9 242.8 158.9 107.5 138.2 177.6 162.6 16009.1 1668.0 2212.1 21365.8 21398.2 25236.1 24581.2 279.9 180.2 116.5 140.8 154.2 159.4 11830.1 1655.0 2058.4 18430.6 21156.3 22954.6 24244.7 150.4 187.6 111.3 140.3 131.9 155.4 19367.1 1936.4 1854.9 17495.5 20691.6 21570.7 23866.6 0.0 156.4 1.0 125.9 0.0 135.7 0.0 1642.0 1699.6 20263.3 20494.5 23852.1 24126.1 149.0 158.6 117.1 99.0 150.0 133.5 17354.1 

Sec. Current Mod.2B 

Field 1 - milliamps

Sec. Current Mod.2B 

Field 2 - milliamps

Sec. Current Mod.2B 

Field 3 - milliamps

Voltage M

1 - 

Voltage Mod. 2A Field 

1 - volts

Voltage Mod. 2A Field 

2 - volts

Voltage Mod. 2A Field 

3 - volts

5 of 14
Century Aluminum

AC Stack E.P. Control Device Data

Compliance Test Jan. 24 - 25, 2012

Date Time

01/24/12 17:46:3801/24/12 18:01:3901/24/12 18:17:3301/24/12 18:31:3901/24/12 18:46:3401/24/12 19:01:3901/24/12 19:16:3801/24/12 19:31:3801/24/12 19:46:3901/24/12 20:01:3901/24/12 20:16:3901/24/12 20:31:4401/24/12 20:46:3901/24/12 21:01:3901/24/12 21:16:3901/24/12 21:31:39

01/25/12 07:03:2001/25/12 07:17:0101/25/12 07:31:4601/25/12 07:46:5601/25/12 08:02:0101/25/12 08:16:4601/25/12 08:31:4101/25/12 08:46:4101/25/12 09:01:4101/25/12 09:16:4101/25/12 09:31:4101/25/12 09:46:4601/25/12 10:02:1201/25/12 10:16:3701/25/12 10:31:4101/25/12 10:46:4101/25/12 11:04:5101/25/12 11:16:4201/25/12 11:31:4701/25/12 11:46:3701/25/12 12:01:4601/25/12 12:16:3601/25/12 12:31:3701/25/12 12:46:4201/25/12 13:01:42

20000 29000 20000 29000 20000 29000 80 156 80 156 80 156 20000 

15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

Sec. Current Mod.2B 

Field 1 - milliamps

Sec. Current Mod.2B 

Field 2 - milliamps

Sec. Current Mod.2B 

Field 3 - milliamps

Voltage M

1 - 

Voltage Mod. 2A Field 

1 - volts

Voltage Mod. 2A Field 

2 - volts

Voltage Mod. 2A Field 

3 - volts

1642.0 1699.6 20263.3 20494.5 23852.1 24126.1 149.0 158.6 117.1 99.0 150.0 133.5 17354.1 2424.1 2005.7 21365.8 20455.9 25647.2 24090.8 324.9 183.7 103.2 97.5 147.5 135.3 18303.5 2320.4 2066.5 21904.0 20542.3 24466.9 24044.3 299.5 198.3 91.9 94.9 183.6 141.1 16585.0 4422.8 2377.3 21686.1 20527.9 25492.9 23994.6 170.0 189.2 112.3 95.5 160.7 139.0 17251.6 4359.3 2713.7 14649.8 19688.4 25505.8 24028.4 131.1 170.6 112.9 95.0 160.7 139.0 17251.6 2526.6 2822.6 20546.0 19952.8 24006.5 24159.9 159.6 171.8 108.4 94.6 167.3 146.0 17316.5 1668.0 2789.1 12010.4 19267.2 25325.6 24629.2 146.7 190.1 119.4 109.5 178.4 168.3 17380.0 1603.1 2784.2 20186.8 19257.6 25133.6 24789.4 305.7 209.7 107.9 108.3 143.6 167.5 14817.1 1808.0 2641.5 21352.8 19212.7 26159.5 25217.3 197.5 216.9 110.0 108.2 187.5 167.9 16597.9 1834.0 2567.8 21878.1 19276.7 25813.2 25238.0 155.4 195.7 121.3 110.5 149.4 168.2 17597.9 1834.0 2567.8 21878.1 19276.7 25813.2 25238.0 155.4 195.7 121.3 110.5 149.4 168.2 17597.9 

0.0 1987.7 0.0 16516.4 0.0 21591.6 145.5 170.6 117.1 114.3 143.8 169.6 19173.8 0.0 1987.7 0.0 16516.4 0.0 21591.6 145.5 170.6 117.1 114.3 143.8 169.6 19173.8 

1564.2 1638.3 20661.5 17267.8 25531.8 21594.8 122.7 169.6 125.4 115.8 152.5 166.8 18367.1 1821.0 1550.1 21533.1 17391.2 25736.7 21811.1 109.4 163.3 106.9 115.6 223.4 173.8 18123.2 1872.9 1575.7 22019.5 18642.3 25889.8 21881.6 138.8 162.3 118.4 115.5 144.0 169.5 17957.2 

4974.1 5429.0 21942.9 21519.8 25198.4 24570.2 110.8 164.3 111.9 115.2 169.8 152.3 17380.0 5551.2 5536.3 21712.1 21553.5 19007.8 23903.7 278.8 176.6 96.1 112.9 177.8 150.2 16316.5 4692.6 5475.5 20686.1 21404.5 25839.2 23943.7 296.3 183.3 106.7 113.8 146.9 148.0 16252.9 5179.0 5464.3 16085.6 20670.7 25057.1 24001.5 186.9 191.7 103.2 115.9 147.9 149.2 16239.9 5076.5 5421.0 21635.5 20706.1 25338.5 24052.7 199.2 202.6 116.7 117.7 143.4 149.5 16072.6 

14.3 4655.3 1.3 17945.7 0.0 21257.0 122.7 204.2 116.1 117.8 113.1 147.6 18918.3 

6767.8 4761.0 21648.5 17924.9 24595.3 21125.5 0.0 168.6 0.4 103.9 0.2 130.3 0.0 7537.0 4974.1 22045.4 18219.7 21494.2 20816.3 110.4 163.1 112.7 95.5 212.1 138.9 18546.0 2551.2 4671.2 19149.2 17870.5 25787.3 20889.9 185.0 172.4 116.7 96.1 126.1 133.4 16765.2 4333.3 4519.0 20712.1 17745.5 24813.2 21615.6 141.7 155.3 122.1 99.3 126.1 133.4 16765.2 2102.5 4195.2 21378.7 17832.0 24941.6 21503.4 133.2 134.9 116.3 100.5 205.7 137.4 19789.9 3769.1 4019.0 21430.6 18500.2 25364.5 21541.8 123.4 127.0 122.7 103.0 150.0 137.7 16597.9 2974.1 3756.2 21622.6 18498.5 21942.9 21117.4 204.9 127.7 103.1 101.3 204.6 145.3 16521.4 3320.4 4169.4 21263.3 21156.3 25429.3 24296.0 467.5 170.8 96.0 98.7 204.6 145.3 16521.4 3974.1 3820.2 20212.7 20976.8 19507.1 23660.0 128.8 186.9 99.2 111.1 107.5 162.5 17687.4 4845.7 3483.8 21442.3 20901.4 22736.7 23815.3 226.3 201.4 263.4 129.9 153.1 155.1 15239.9 5063.6 3797.8 21237.4 21162.5 18994.8 22966.3 53.7 185.0 101.3 128.0 158.6 159.2 16367.1 

0.0 3256.2 0.0 18573.4 0.0 19864.6 270.5 201.1 246.7 143.6 185.0 163.5 12766.5 

6319.1 3783.2 20468.2 18459.6 25813.2 19973.6 0.0 184.4 0.0 129.0 0.0 137.8 0.0 6319.1 3783.2 20468.2 18459.6 25813.2 19973.6 0.0 184.4 0.0 129.0 0.0 137.8 0.0 5845.7 4393.6 20968.9 18360.2 23492.9 19936.6 217.3 184.9 250.7 151.6 153.8 135.5 18303.5 5845.7 4393.6 20968.9 18360.2 23492.9 19936.6 217.3 184.9 250.7 151.6 153.8 135.5 18303.5 5769.1 4699.7 21942.9 18445.2 25492.9 19944.6 182.5 149.3 124.0 155.1 165.4 138.3 16700.4 5024.6 5061.8 20776.9 18469.4 24710.8 20958.8 141.1 137.8 122.3 183.9 171.9 143.2 16329.4 5383.9 5101.8 21084.3 18450.2 24865.1 21692.6 170.7 152.4 125.0 186.9 124.0 138.8 16059.7 

6 of 14
Century Aluminum

AC Stack E.P. Control Device Data

Compliance Test Jan. 24 - 25, 2012

Date Time

01/24/12 07:01:3101/24/12 07:16:3701/24/12 07:31:3701/24/12 07:46:3701/24/12 08:01:3701/24/12 08:16:3601/24/12 08:31:3201/24/12 08:46:3201/24/12 09:01:4201/24/12 09:16:3201/24/12 09:32:1701/24/12 09:46:3701/24/12 10:01:4301/24/12 10:16:3201/24/12 10:31:3701/24/12 10:46:3801/24/12 11:01:3801/24/12 11:16:3801/24/12 11:31:3701/24/12 11:46:3701/24/12 12:04:1301/24/12 12:16:3701/24/12 12:31:3701/24/12 12:46:3701/24/12 13:01:3801/24/12 13:16:3701/24/12 13:31:3801/24/12 13:46:4201/24/12 14:01:4301/24/12 14:16:4301/24/12 14:49:3801/24/12 15:01:3301/24/12 15:17:2301/24/12 15:31:3801/24/12 15:46:3301/24/12 16:01:3801/24/12 16:16:4301/24/12 16:31:4301/24/12 16:46:4301/24/12 17:01:4301/24/12 17:16:5801/24/12 17:31:43

20000 29000 80 156 80 156 80 156 20000 29000 20000 29000 20000 

15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

10088.2 8822.1 475.3 137.2 121.5 102.6 85.2 128.4 12163.4 16755.0 23839.2 20877.4 23416.3 10984.4 8253.4 88.8 148.3 118.6 117.4 86.9 139.3 23121.9 19645.3 24287.9 23913.3 23416.3 10984.4 8253.4 88.8 148.3 118.6 117.4 86.9 139.3 23121.9 19645.3 24287.9 23913.3 23416.3 

8626.5 8399.2 98.8 146.8 110.8 116.5 91.1 130.6 23006.5 19686.9 23673.2 23889.3 22570.7 8920.9 8621.8 109.6 151.3 122.5 117.0 87.7 135.2 23570.7 19781.5 23826.2 23846.0 23518.8 8883.3 8886.2 102.1 136.9 122.5 117.3 476.0 165.4 22673.2 21513.3 24096.0 23882.8 16675.7 

51.9 7823.9 288.6 164.4 122.5 117.3 476.0 165.4 22673.2 21513.3 24096.0 23882.8 16675.7 

8062.3 7791.8 0.0 153.6 0.0 102.6 0.0 146.7 0.0 18416.5 0.0 20898.0 0.0 6780.8 7378.4 231.1 123.1 123.4 102.8 220.7 163.6 13880.7 18631.2 24237.4 20947.8 21840.5 6780.8 7378.4 231.1 123.1 123.4 102.8 220.7 163.6 13880.7 18631.2 24237.4 20947.8 21840.5 8229.6 6934.7 117.7 124.9 121.3 104.2 81.9 178.4 19994.8 18264.3 24300.9 21035.8 23492.9 8780.8 6917.2 363.2 156.6 118.1 103.6 76.5 177.0 10330.7 16609.3 24159.5 21077.5 22852.1 8024.6 7080.6 92.9 160.1 115.2 105.2 125.2 182.2 23287.9 16817.4 24172.5 21136.7 17802.9 9549.9 7163.9 309.9 186.0 118.1 104.6 78.8 132.6 17879.4 16218.2 24044.1 21130.2 22967.6 8511.0 8221.3 81.3 160.1 123.1 104.7 95.4 111.6 22211.4 16347.9 23492.9 21096.5 24019.5 6562.9 8033.9 99.2 172.5 123.8 120.2 174.6 133.4 22544.7 19166.0 23710.8 24060.3 19289.2 6562.9 8006.6 114.6 158.0 124.4 120.3 71.3 114.7 20443.6 19986.4 22814.5 23882.5 22289.2 7383.9 7950.7 117.1 162.0 123.1 120.9 85.0 98.6 22788.6 19935.1 23378.7 23759.2 23686.1 7383.9 7950.7 117.1 162.0 123.1 120.9 85.0 98.6 22788.6 19935.1 23378.7 23759.2 23686.1 6319.1 6614.3 0.0 125.3 0.0 106.1 0.0 88.9 0.0 18619.8 0.0 20556.7 0.0 7704.3 6574.3 84.4 124.3 123.1 107.0 135.5 90.2 22404.7 18509.4 23313.9 20449.4 21391.7 7691.3 6341.9 63.3 93.4 123.4 107.7 78.3 90.1 21378.7 18946.8 23736.7 20411.0 23390.4 7691.3 6341.9 63.3 93.4 123.4 107.7 78.3 90.1 21378.7 18946.8 23736.7 20411.0 23390.4 8537.0 6345.2 134.0 100.0 123.4 107.8 170.4 99.5 22980.5 19043.0 23505.8 20412.6 19815.8 7408.6 6571.0 120.0 124.9 123.8 107.2 91.5 98.2 22339.8 18812.3 23481.2 20465.6 23852.1 7408.6 6571.0 120.0 124.9 123.8 107.2 91.5 98.2 22339.8 18812.3 23481.2 20465.6 23852.1 7460.4 7466.6 136.9 114.6 122.3 106.1 101.9 102.3 21955.9 19057.4 23134.9 20545.6 24211.4 6614.8 7503.6 115.0 129.0 122.1 121.4 82.9 112.7 22071.3 21816.3 23531.8 23487.0 22660.2 8216.6 7567.6 109.4 132.1 121.9 121.2 84.4 106.3 20378.7 21563.1 23083.0 23458.2 22570.7 9114.1 7745.5 126.7 140.0 122.5 121.1 188.4 120.1 17636.8 21095.3 23531.8 23432.6 21686.1 6242.5 6518.2 184.8 126.6 85.6 116.6 159.6 111.7 9600.5 19765.6 23313.9 23330.1 22378.7 7358.0 6511.8 124.6 127.1 111.9 115.1 75.4 109.6 11638.1 18427.9 24429.3 23448.6 22455.3 8151.8 6644.8 114.8 130.8 110.4 114.8 69.4 106.2 18110.2 17867.1 23878.1 23467.9 21224.4 7626.5 6665.5 78.8 123.6 117.5 114.2 93.8 105.2 21160.8 17767.7 24121.9 23591.3 23852.1 7293.1 6750.3 66.7 117.5 233.0 128.1 83.3 105.3 22725.0 17849.4 20917.0 23264.4 23147.9 7652.4 6679.8 79.8 113.8 112.9 126.9 88.4 105.8 23147.9 18195.5 24185.5 23402.2 23492.9 8716.0 6630.0 66.5 106.3 120.6 126.7 147.7 100.7 22442.3 18796.2 24557.7 23530.5 20058.4 7946.8 7623.4 163.2 109.9 112.5 125.5 84.4 100.2 19968.9 18599.2 24442.3 23730.7 23326.8 8203.6 7868.5 106.9 100.2 117.3 129.5 91.0 91.7 20020.8 19901.8 24621.3 23894.1 23723.7 9907.9 8187.3 96.9 96.7 120.9 130.6 81.5 92.4 23352.8 21366.1 24224.4 23868.5 22827.5 

0.0 7168.3 90.0 93.6 120.4 131.9 94.2 95.5 23544.7 22045.4 24262.0 23916.5 23954.6 

6473.4 7024.2 182.8 106.6 117.5 131.9 69.8 92.5 11433.2 20829.4 25108.9 24039.9 22481.2 

Sec. Current Mod.3A 

Field 1 - milliamps

Sec. Current Mod.3A 

Field 2 - milliamps

Sec. Current Mod.3A 

Field 3 - milliamps

Voltage Mod. 3A Field 

1 - volts

Voltage Mod. 3A Field 

2 - volts

Voltage M

3 - 

Voltage Mod. 2B Field 

3 - volts

7 of 14
Century Aluminum

AC Stack E.P. Control Device Data

Compliance Test Jan. 24 - 25, 2012

Date Time

01/24/12 17:46:3801/24/12 18:01:3901/24/12 18:17:3301/24/12 18:31:3901/24/12 18:46:3401/24/12 19:01:3901/24/12 19:16:3801/24/12 19:31:3801/24/12 19:46:3901/24/12 20:01:3901/24/12 20:16:3901/24/12 20:31:4401/24/12 20:46:3901/24/12 21:01:3901/24/12 21:16:3901/24/12 21:31:39

01/25/12 07:03:2001/25/12 07:17:0101/25/12 07:31:4601/25/12 07:46:5601/25/12 08:02:0101/25/12 08:16:4601/25/12 08:31:4101/25/12 08:46:4101/25/12 09:01:4101/25/12 09:16:4101/25/12 09:31:4101/25/12 09:46:4601/25/12 10:02:1201/25/12 10:16:3701/25/12 10:31:4101/25/12 10:46:4101/25/12 11:04:5101/25/12 11:16:4201/25/12 11:31:4701/25/12 11:46:3701/25/12 12:01:4601/25/12 12:16:3601/25/12 12:31:3701/25/12 12:46:4201/25/12 13:01:42

20000 29000 80 156 80 156 80 156 20000 29000 20000 29000 20000 

15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

Sec. Current Mod.3A 

Field 1 - milliamps

Sec. Current Mod.3A 

Field 2 - milliamps

Sec. Current Mod.3A 

Field 3 - milliamps

Voltage Mod. 3A Field 

1 - volts

Voltage Mod. 3A Field 

2 - volts

Voltage M

3 - 

Voltage Mod. 2B Field 

3 - volts

6473.4 7024.2 182.8 106.6 117.5 131.9 69.8 92.5 11433.2 20829.4 25108.9 24039.9 22481.2 8203.6 7182.9 141.1 146.3 118.1 118.1 86.0 91.9 15854.7 18538.4 24839.2 24599.1 23160.8 7652.4 7049.9 0.0 138.0 0.0 103.0 0.0 73.4 0.0 15733.1 0.0 21529.3 0.0 8805.4 7157.3 165.2 138.2 108.6 102.5 75.2 72.3 19186.8 15635.4 24390.4 21522.9 22404.7 8805.4 7157.3 165.2 138.2 108.6 102.5 75.2 72.3 19186.8 15635.4 24390.4 21522.9 22404.7 7985.7 6732.8 101.0 140.3 119.2 106.8 282.0 94.7 24262.0 16109.4 24993.5 21276.1 16085.6 6922.2 7598.1 334.1 170.9 167.1 112.6 204.2 108.4 18290.5 15452.7 24326.8 21284.2 18853.4 8587.5 7862.4 94.6 159.8 114.6 112.2 78.3 109.5 23788.6 16997.1 24902.7 21258.4 22211.4 6870.3 7719.7 122.7 134.8 118.6 112.4 87.3 110.3 24185.5 18559.0 24621.3 21244.0 23275.0 7909.2 7682.9 82.1 127.4 118.1 112.4 81.5 109.8 23749.7 19545.9 24954.6 21258.4 23108.9 7909.2 7682.9 82.1 127.4 118.1 112.4 81.5 109.8 23749.7 19545.9 24954.6 21258.4 23108.9 6216.6 7199.1 84.4 129.6 120.7 128.4 262.0 141.9 23070.0 23016.1 24479.9 24372.9 19609.6 6216.6 7199.1 84.4 129.6 120.7 128.4 262.0 141.9 23070.0 23016.1 24479.9 24372.9 19609.6 

15303.5 8270.8 106.3 127.9 123.2 124.7 73.8 142.4 22019.5 22905.5 22518.8 24453.0 20468.2 

7793.8 8246.8 168.2 136.3 122.1 125.1 51.9 113.7 10882.0 21233.0 22416.3 24130.8 21660.2 7408.6 8307.6 0.0 94.6 0.0 104.2 0.0 88.1 0.0 18946.7 0.0 21090.0 0.0 

8280.2 9057.4 107.1 172.9 123.4 121.3 85.4 84.4 20648.5 20888.6 25120.6 25044.3 23339.8 8972.8 8447.0 83.6 172.5 115.4 121.1 74.4 82.3 23993.5 20907.9 25108.9 25054.0 22660.2 7754.9 8390.9 85.4 166.3 120.2 120.8 88.4 81.0 23057.1 21028.0 25083.0 25191.8 23710.8 8613.5 8394.1 295.7 182.2 122.3 121.4 77.9 81.6 16098.6 20779.7 25108.9 25127.8 22942.9 8985.7 8471.1 235.5 204.3 115.2 120.4 85.0 81.7 17225.7 20122.7 24787.3 25076.4 23468.2 8626.5 8485.6 102.5 204.0 125.0 120.6 122.3 86.1 23801.6 20073.1 24621.3 25029.8 19494.2 

14.3 7455.4 83.4 167.8 98.6 117.6 334.7 116.7 23416.3 20604.9 23891.1 24872.9 18315.2 

6627.8 7234.4 74.0 133.4 125.5 118.2 79.0 118.4 23019.5 21407.6 24134.9 24732.0 23121.9 8395.6 7248.9 0.0 120.0 0.0 102.8 0.0 107.7 0.0 18826.5 0.0 21591.9 0.0 8395.6 7248.9 0.0 120.0 0.0 102.8 0.0 107.7 0.0 18826.5 0.0 21591.9 0.0 7870.3 7514.8 66.9 115.1 128.4 103.2 82.9 114.4 22852.1 18616.6 24800.3 21486.1 19853.4 9472.1 7622.1 84.8 88.8 120.9 103.1 239.4 134.5 23608.3 19555.3 24928.7 21463.5 20583.7 7704.3 7461.9 81.0 69.5 121.9 103.9 85.4 134.6 23518.8 20341.9 24852.1 21471.6 23160.8 7704.3 7461.9 81.0 69.5 121.9 103.9 85.4 134.6 23518.8 20341.9 24852.1 21471.6 23160.8 8896.2 8426.4 88.6 69.5 122.9 106.8 92.5 99.5 19520.1 19867.7 24941.6 21615.8 23557.7 7652.4 8554.5 115.2 74.7 115.8 105.6 74.2 98.9 24275.0 20024.6 24993.5 21723.1 22045.4 6806.7 8355.9 272.2 108.7 124.6 121.2 76.0 108.4 13880.7 21759.7 24313.9 24762.3 21583.7 8075.2 7992.2 125.9 116.5 126.9 123.2 340.7 134.4 19955.9 21439.4 24390.4 24743.0 17367.1 

0.0 7008.4 95.6 120.1 125.9 122.9 76.3 133.6 23390.4 21506.6 23839.2 24622.9 22429.3 0.0 7008.4 95.6 120.1 125.9 122.9 76.3 133.6 23390.4 21506.6 23839.2 24622.9 22429.3 

7421.5 6766.5 90.8 128.2 115.8 122.7 132.3 122.0 23518.8 21163.9 25031.1 24387.3 17495.5 7421.5 6766.5 90.8 128.2 115.8 122.7 132.3 122.0 23518.8 21163.9 25031.1 24387.3 17495.5 7281.5 6744.2 82.1 126.2 123.6 122.6 75.0 120.9 22544.7 20994.0 25120.6 24436.9 22455.3 7306.1 6619.2 216.1 138.8 114.2 121.5 398.7 159.1 22699.1 21391.4 24852.1 24425.7 16418.9 8358.0 6813.1 80.6 114.8 124.2 121.1 88.1 170.3 23096.0 21663.8 24915.7 24475.2 23211.4 

8 of 14
Century Aluminum

AC Stack E.P. Control Device Data

Compliance Test Jan. 24 - 25, 2012

Date Time

01/24/12 07:01:3101/24/12 07:16:3701/24/12 07:31:3701/24/12 07:46:3701/24/12 08:01:3701/24/12 08:16:3601/24/12 08:31:3201/24/12 08:46:3201/24/12 09:01:4201/24/12 09:16:3201/24/12 09:32:1701/24/12 09:46:3701/24/12 10:01:4301/24/12 10:16:3201/24/12 10:31:3701/24/12 10:46:3801/24/12 11:01:3801/24/12 11:16:3801/24/12 11:31:3701/24/12 11:46:3701/24/12 12:04:1301/24/12 12:16:3701/24/12 12:31:3701/24/12 12:46:3701/24/12 13:01:3801/24/12 13:16:3701/24/12 13:31:3801/24/12 13:46:4201/24/12 14:01:4301/24/12 14:16:4301/24/12 14:49:3801/24/12 15:01:3301/24/12 15:17:2301/24/12 15:31:3801/24/12 15:46:3301/24/12 16:01:3801/24/12 16:16:4301/24/12 16:31:4301/24/12 16:46:4301/24/12 17:01:4301/24/12 17:16:5801/24/12 17:31:43

80 156 80 156 20000 29000 20000 29000 20000 29000 80 156 80 

15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

142.3 124.1 160.9 117.5 12779.5 15729.6 22404.7 18570.2 3936.4 3414.9 133.4 106.6 134.4 143.6 134.3 126.5 116.7 12856.0 14696.3 22647.2 18759.2 4987.0 3721.0 134.6 94.2 133.8 143.6 134.3 126.5 116.7 12856.0 14696.3 22647.2 18759.2 4551.2 4289.9 132.9 95.2 135.2 130.0 150.6 138.4 134.0 12368.4 16242.4 22762.6 21604.6 4396.9 4555.8 135.9 112.1 134.2 139.2 149.8 129.4 133.5 12228.3 15044.1 22930.0 21803.3 5640.7 4754.5 94.8 107.1 138.8 123.6 139.3 145.4 132.4 15688.7 14334.6 20994.8 22293.6 5512.3 4810.6 134.8 112.5 135.2 123.6 139.3 145.4 132.4 15688.7 14334.6 20994.8 22293.6 5512.3 4810.6 134.8 112.5 135.2 

87.7 132.2 127.1 133.8 14239.9 14650.3 22326.8 22453.8 4538.3 4980.4 135.2 129.5 120.4 

0.0 114.4 0.0 113.7 0.0 13052.9 0.0 19653.2 0.0 4291.3 134.2 129.5 135.7 0.0 114.4 0.0 113.7 0.0 13052.9 0.0 19653.2 0.0 4291.3 134.2 129.5 135.7 

146.5 116.7 134.0 117.8 20751.0 15154.8 21417.6 19413.1 3795.1 4087.9 136.7 113.2 130.5 122.5 114.6 155.4 121.0 22404.7 16426.9 22250.3 19328.1 3243.8 3943.7 119.6 111.2 138.1 146.1 114.7 144.2 125.1 22313.9 16835.3 22019.5 19214.3 4461.7 3796.4 135.2 116.2 137.7 146.3 117.5 133.8 123.7 21917.0 17613.8 22134.9 19356.8 3769.1 3578.5 133.6 116.1 133.1 143.4 117.3 146.7 125.6 21738.0 18081.7 21917.0 19267.2 4588.8 3564.0 133.1 115.9 136.5 130.7 122.6 119.6 124.7 21557.7 18996.4 22429.3 19280.0 4756.2 3591.3 110.8 112.9 108.8 144.8 140.7 132.7 141.3 21147.9 21639.9 21544.7 21973.1 4025.9 4094.5 136.9 113.2 131.9 144.0 140.5 138.6 138.1 21160.8 21623.9 21583.7 21912.1 5192.0 4229.1 107.9 126.7 329.9 144.0 140.5 138.6 138.1 21160.8 21623.9 21583.7 21912.1 5320.4 4419.7 134.6 126.4 225.3 147.3 143.4 135.5 134.9 20572.0 21423.6 20994.8 21772.7 4935.1 4631.2 137.1 128.6 136.3 

0.4 125.2 0.0 116.9 0.0 18634.4 0.0 19020.3 0.0 4073.4 136.1 128.7 135.7 

145.7 125.1 128.6 116.3 21853.4 18626.5 21481.2 18938.6 3692.6 4063.9 0.0 112.0 0.0 145.7 125.1 128.6 116.3 21853.4 18626.5 21481.2 18938.6 3692.6 4063.9 0.0 112.0 0.0 145.4 125.4 125.9 113.7 21263.3 18567.1 20699.1 18786.3 4115.4 4004.7 137.1 112.5 138.1 145.4 127.0 125.4 116.1 19046.7 18299.8 21378.7 18619.8 4564.2 4208.2 121.1 113.6 124.8 145.4 127.0 125.4 116.1 19046.7 18299.8 21378.7 18619.8 4564.2 4208.2 121.1 113.6 124.8 145.5 127.2 141.1 121.8 20341.1 18256.5 21110.2 18501.5 5230.9 4104.1 119.2 115.1 136.7 144.4 126.9 151.1 123.8 20892.3 18296.5 20994.8 18501.5 5140.1 4129.7 135.0 114.8 134.8 142.9 144.7 142.7 141.6 19738.0 20763.8 21058.4 21133.8 4897.5 4741.9 134.6 114.6 134.0 143.2 144.3 115.9 140.0 21455.3 20714.0 21006.5 21074.4 6332.0 5071.8 286.7 150.5 122.9 143.1 144.0 138.8 142.0 19225.7 20335.9 21712.1 21076.0 6614.8 5180.8 133.4 147.3 124.6 144.6 143.9 127.9 142.3 17752.3 20174.1 21544.7 21096.8 5204.9 5260.9 0.0 132.2 0.0 144.2 143.8 126.9 136.8 14509.7 19305.9 21507.1 21149.6 4782.1 5302.5 112.1 129.3 135.4 141.9 143.4 134.2 135.9 21917.0 19502.9 21635.5 21215.3 5551.2 5342.6 134.4 131.2 124.8 145.0 143.4 121.5 132.2 22289.2 19677.5 22121.9 21356.2 5486.4 5385.9 133.2 131.0 134.6 144.6 143.7 143.1 132.2 22198.4 19985.1 22339.8 21516.4 5845.7 5504.4 132.3 130.7 121.9 144.0 143.7 124.2 133.3 22300.9 20090.8 22518.8 21705.4 6037.6 5467.6 132.7 111.4 125.9 142.7 143.7 121.1 129.7 22339.8 20316.6 21725.0 21888.1 5588.8 5638.9 131.5 113.7 177.3 145.2 144.0 180.2 134.9 21775.6 20635.4 22276.3 21958.7 5242.5 5467.4 132.7 113.6 121.5 142.5 143.7 132.3 135.4 20699.1 21003.7 21955.9 22010.1 6806.7 5667.6 132.5 130.2 132.1 144.0 143.7 152.1 138.6 20417.6 21742.2 21993.5 22070.8 5974.1 5816.6 125.9 131.9 130.4 

0.6 126.1 0.4 121.9 0.0 19002.6 0.0 19366.4 0.0 5122.7 125.9 130.8 128.2 

Sec. Current Mod.4A 

Field 1 - milliamps

Sec. Cur

Field 2 

Sec. Current Mod.3B 

Field 2 - milliamps

Sec. Current Mod.3B 

Field 3 - milliamps

Voltage Mod. 3B Field 

1 - volts

Voltage Mod. 3B Field 

2 - volts

Voltage Mod. 3B Field 

3 - volts

9 of 14
Century Aluminum

AC Stack E.P. Control Device Data

Compliance Test Jan. 24 - 25, 2012

Date Time

01/24/12 17:46:3801/24/12 18:01:3901/24/12 18:17:3301/24/12 18:31:3901/24/12 18:46:3401/24/12 19:01:3901/24/12 19:16:3801/24/12 19:31:3801/24/12 19:46:3901/24/12 20:01:3901/24/12 20:16:3901/24/12 20:31:4401/24/12 20:46:3901/24/12 21:01:3901/24/12 21:16:3901/24/12 21:31:39

01/25/12 07:03:2001/25/12 07:17:0101/25/12 07:31:4601/25/12 07:46:5601/25/12 08:02:0101/25/12 08:16:4601/25/12 08:31:4101/25/12 08:46:4101/25/12 09:01:4101/25/12 09:16:4101/25/12 09:31:4101/25/12 09:46:4601/25/12 10:02:1201/25/12 10:16:3701/25/12 10:31:4101/25/12 10:46:4101/25/12 11:04:5101/25/12 11:16:4201/25/12 11:31:4701/25/12 11:46:3701/25/12 12:01:4601/25/12 12:16:3601/25/12 12:31:3701/25/12 12:46:4201/25/12 13:01:42

80 156 80 156 20000 29000 20000 29000 20000 29000 80 156 80 

15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

Sec. Current Mod.4A 

Field 1 - milliamps

Sec. Cur

Field 2 

Sec. Current Mod.3B 

Field 2 - milliamps

Sec. Current Mod.3B 

Field 3 - milliamps

Voltage Mod. 3B Field 

1 - volts

Voltage Mod. 3B Field 

2 - volts

Voltage Mod. 3B Field 

3 - volts

0.6 126.1 0.4 121.9 0.0 19002.6 0.0 19366.4 0.0 5122.7 125.9 130.8 128.2 

140.7 122.4 145.9 123.4 22045.4 19018.6 22686.1 19284.7 4601.8 4843.9 130.0 129.0 130.9 143.8 122.4 143.2 125.8 22788.6 19079.6 21762.6 19190.2 4935.1 4706.1 130.4 128.7 129.6 141.9 122.3 130.0 126.9 22378.7 19084.5 22622.6 19302.4 5013.0 4634.1 0.6 112.4 0.4 141.9 122.3 130.0 126.9 22378.7 19084.5 22622.6 19302.4 5013.0 4634.1 0.6 112.4 0.4 141.3 121.8 152.5 121.7 17508.4 17819.1 22827.5 19456.1 5268.5 4462.7 120.9 120.8 120.7 141.3 121.4 134.8 119.5 19251.6 17673.3 22942.9 19574.7 5281.5 4376.1 108.6 118.7 122.5 139.4 138.8 158.0 139.2 13368.4 19344.4 23263.3 22482.7 5281.5 4376.1 108.6 118.7 122.5 143.1 141.7 128.2 138.9 20699.1 19110.4 22686.1 22678.2 5281.5 5036.3 130.5 119.3 127.7 116.1 138.7 142.5 138.4 22570.7 19176.1 23070.0 22726.2 5115.4 5113.3 131.9 120.6 108.1 116.1 138.7 142.5 138.4 22570.7 19176.1 23070.0 22726.2 5922.2 5278.4 91.3 115.8 128.1 100.0 133.0 132.9 138.6 17994.8 18195.5 22518.8 22806.3 5473.4 5521.9 130.9 131.8 130.9 100.0 133.0 132.9 138.6 17994.8 18195.5 22518.8 22806.3 5473.4 5521.9 130.9 131.8 130.9 145.5 133.4 147.3 142.2 14252.9 18121.8 21762.6 22697.3 4538.3 5412.9 133.1 121.9 110.8 142.7 133.6 155.5 142.6 18469.5 18241.9 21827.5 22572.3 5024.6 5382.5 131.3 123.2 121.3 145.2 134.1 170.9 147.1 20648.5 18416.5 22134.9 22471.3 4448.8 5278.4 132.7 126.2 122.9 

146.1 162.3 133.8 119.9 12420.2 14614.9 23660.2 23091.6 5769.1 7311.3 126.1 129.8 123.6 147.7 162.4 163.0 121.6 13958.5 13556.1 24006.5 23266.2 5845.7 7093.4 116.5 128.4 350.9 311.1 183.0 107.5 118.0 12894.9 13389.6 18136.2 22772.7 6948.1 7021.4 189.4 136.0 114.8 302.6 202.5 91.5 115.4 11882.0 12385.1 22147.9 22676.6 8280.2 6976.5 131.3 138.6 122.9 147.1 202.6 136.5 120.3 13688.7 12623.7 23596.6 22694.2 6447.5 6869.2 106.9 152.0 119.4 146.9 202.9 126.1 121.9 13688.7 12840.0 23826.2 22694.2 8382.6 7027.7 131.3 142.2 124.8 146.9 186.7 132.7 124.9 14470.8 13013.0 23762.6 22864.0 6627.8 6854.7 101.0 139.7 122.9 147.5 187.0 99.8 123.9 15906.6 13613.8 23904.0 22880.0 8447.5 7093.5 110.9 126.7 134.2 137.9 185.9 93.2 118.8 9959.8 13306.3 24108.9 22936.1 7499.4 7309.8 132.3 127.5 120.0 137.9 185.9 93.2 118.8 9959.8 13306.3 24108.9 22936.1 7499.4 7309.8 132.3 127.5 120.0 147.7 165.5 151.9 118.2 21891.1 14770.4 22736.7 23363.8 6409.9 7189.7 134.8 123.2 125.2 143.4 145.6 111.7 120.7 22365.8 16080.9 23057.1 23477.5 7140.1 7047.2 132.1 123.3 126.9 147.7 145.7 119.6 118.6 23045.4 17250.5 22762.6 23373.2 7024.6 7119.3 131.5 126.3 128.6 147.7 145.7 119.6 118.6 23045.4 17250.5 22762.6 23373.2 7024.6 7119.3 131.5 126.3 128.6 146.3 145.6 101.7 110.2 22455.3 19041.5 22840.5 23120.3 6319.1 7069.6 131.5 130.3 118.6 146.3 145.5 134.4 114.5 22699.1 19890.6 22762.6 22977.6 5961.1 6758.8 116.5 131.0 126.9 148.1 146.7 130.9 119.2 22045.4 21401.3 22237.4 22743.7 7434.5 6750.6 214.7 141.3 127.9 149.0 146.9 115.8 119.5 22019.5 22069.2 22481.2 22700.4 8088.2 7083.8 130.2 140.5 123.6 148.8 147.0 108.1 114.0 22147.9 22101.3 22404.7 22658.9 7268.5 7191.1 134.4 140.4 129.0 148.8 147.0 108.1 114.0 22147.9 22101.3 22404.7 22658.9 7268.5 7191.1 134.4 140.4 129.0 149.6 147.8 147.3 121.9 19751.0 21545.4 21442.3 22255.2 6229.6 6949.1 135.0 140.8 133.8 149.6 147.8 147.3 121.9 19751.0 21545.4 21442.3 22255.2 6229.6 6949.1 135.0 140.8 133.8 135.4 146.4 119.8 125.7 22237.4 21821.0 23096.0 22301.6 5769.1 6633.6 0.0 124.3 0.0 148.4 146.7 126.1 128.7 22186.8 21787.5 22583.7 22269.5 4653.7 6425.4 114.0 122.1 104.4 148.1 146.9 92.7 123.5 22263.3 21733.0 22609.6 22250.3 7717.3 6644.9 130.9 123.9 127.5 

10 of 14
Century Aluminum

AC Stack E.P. Control Device Data

Compliance Test Jan. 24 - 25, 2012

Date Time

01/24/12 07:01:3101/24/12 07:16:3701/24/12 07:31:3701/24/12 07:46:3701/24/12 08:01:3701/24/12 08:16:3601/24/12 08:31:3201/24/12 08:46:3201/24/12 09:01:4201/24/12 09:16:3201/24/12 09:32:1701/24/12 09:46:3701/24/12 10:01:4301/24/12 10:16:3201/24/12 10:31:3701/24/12 10:46:3801/24/12 11:01:3801/24/12 11:16:3801/24/12 11:31:3701/24/12 11:46:3701/24/12 12:04:1301/24/12 12:16:3701/24/12 12:31:3701/24/12 12:46:3701/24/12 13:01:3801/24/12 13:16:3701/24/12 13:31:3801/24/12 13:46:4201/24/12 14:01:4301/24/12 14:16:4301/24/12 14:49:3801/24/12 15:01:3301/24/12 15:17:2301/24/12 15:31:3801/24/12 15:46:3301/24/12 16:01:3801/24/12 16:16:4301/24/12 16:31:4301/24/12 16:46:4301/24/12 17:01:4301/24/12 17:16:5801/24/12 17:31:43

20000 29000 20000 29000 20000 29000 80 156 80 156 80 156 20000 

15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

22904.0 16836.6 23070.0 17826.7 24211.4 16163.9 141.9 18.0 0.0 0.0 146.5 18.4 23544.7 23134.9 17149.2 23531.8 17644.0 23839.2 16535.5 127.1 48.6 0.0 0.0 141.9 50.6 23710.8 22827.5 17056.3 23442.3 17658.4 24044.1 16737.4 140.5 66.2 0.0 0.0 119.8 65.5 23057.1 22801.6 19906.5 23442.3 20588.7 23954.6 19731.7 139.4 83.6 0.0 0.0 128.8 81.6 22980.5 22313.9 19677.4 23596.6 20518.3 18700.4 19885.5 137.9 100.9 0.0 0.0 131.5 98.1 23352.8 22917.0 19980.2 23621.3 20499.0 24287.9 20393.3 138.6 118.1 0.0 0.0 136.9 115.1 23390.4 22917.0 19980.2 23621.3 20499.0 24287.9 20393.3 138.6 118.1 0.0 0.0 136.9 115.1 23390.4 22455.3 22751.9 22622.6 23381.3 20097.3 22918.3 138.1 134.7 0.0 0.0 264.9 144.8 22814.5 22378.7 22681.4 22827.5 23323.8 20468.2 22463.2 120.9 134.9 0.0 0.0 133.4 147.0 21878.1 22378.7 22681.4 22827.5 23323.8 20468.2 22463.2 120.9 134.9 0.0 0.0 133.4 147.0 21878.1 23429.3 19864.8 23762.6 20422.3 19840.5 18957.8 0.0 118.7 0.0 0.0 0.0 129.6 0.0 22980.5 19887.2 23531.8 20433.5 24313.9 19002.8 104.0 114.3 0.0 0.0 130.2 129.8 23673.2 22878.1 19957.7 23634.2 20438.2 24390.4 19714.0 115.6 111.5 0.0 0.0 111.1 127.2 23801.6 22967.6 19964.0 23518.8 20425.4 23852.1 19659.5 137.3 111.3 0.0 0.0 136.7 127.2 23710.8 22518.8 19951.0 23518.8 20425.4 23852.1 19659.5 137.3 111.3 0.0 0.0 136.7 127.2 23710.8 22775.6 19991.1 23198.4 20430.1 24313.9 20045.6 100.8 104.1 0.0 0.0 114.4 107.7 23673.2 22173.8 19965.5 23596.6 20526.3 23673.2 20446.2 137.1 106.2 0.0 0.0 184.2 114.1 23070.0 20583.7 22538.4 21455.3 23208.2 24569.4 23517.3 133.4 105.6 0.0 0.0 502.5 161.6 23300.9 22147.9 22378.2 22224.4 23015.9 24134.9 24054.2 227.5 134.0 0.0 0.0 126.3 177.4 22596.6 22147.9 22274.2 22942.9 22942.3 23762.6 23985.2 136.9 138.1 0.0 0.0 125.0 176.8 22852.1 21660.2 22121.9 22801.6 22838.2 24505.8 23999.7 134.6 140.5 0.0 0.0 110.4 176.7 22300.9 

0.0 19251.0 0.0 19898.3 0.0 21018.2 137.5 140.5 0.0 0.0 116.7 174.2 22762.6 0.0 19251.0 0.0 19898.3 0.0 21018.2 137.5 140.5 0.0 0.0 116.7 174.2 22762.6 

22762.6 19281.5 23250.3 19933.7 24313.9 21159.2 0.0 126.0 0.0 0.0 0.0 159.9 0.0 22557.7 19313.4 23455.3 19940.0 22494.2 21043.8 135.7 128.1 0.0 0.0 117.5 183.5 22954.6 22557.7 19313.4 23455.3 19940.0 22494.2 21043.8 135.7 128.1 0.0 0.0 117.5 183.5 22954.6 22442.3 19613.0 23390.4 19600.4 23865.1 20984.4 135.2 116.7 0.0 0.0 119.8 135.6 23045.4 22468.2 19653.0 23686.1 19693.3 24518.8 21079.0 118.2 114.4 0.0 0.0 130.7 136.4 23596.6 22276.3 19730.1 23608.3 19794.1 22647.2 20846.6 179.6 120.0 0.0 0.0 123.1 137.9 20097.3 18955.9 22099.5 23442.3 22724.4 17443.6 23027.1 134.2 119.6 0.0 0.0 118.6 138.2 23300.9 22712.1 22037.1 23596.6 22580.3 24775.6 22857.3 132.7 138.3 0.0 0.0 128.8 119.7 23263.3 

0.0 19217.4 0.0 19648.3 0.0 20045.6 205.3 147.0 0.0 0.0 119.8 120.0 23263.3 

22699.1 19219.0 23699.1 20414.2 23710.8 19963.8 1.0 130.3 0.0 0.0 0.6 104.3 0.0 23352.8 19332.8 23801.6 20465.6 24249.0 20011.8 132.1 129.9 0.0 0.0 123.2 104.8 23660.2 23492.9 19460.9 20904.0 20117.9 22211.4 19723.4 130.9 131.5 0.0 0.0 121.9 103.7 24287.9 23134.9 19568.3 23865.1 20150.0 24557.7 19962.2 128.1 125.1 0.0 0.0 108.2 101.8 24429.3 23365.8 20119.5 24159.5 20239.6 24275.0 20816.1 103.4 121.3 0.0 0.0 126.1 102.7 23352.8 23224.4 20247.7 22967.6 20374.2 23954.6 20966.8 124.4 119.7 0.0 0.0 131.3 107.5 24185.5 23313.9 20323.0 24300.9 20462.2 24364.5 20915.4 103.1 116.0 0.0 0.0 267.8 124.9 24006.5 23083.0 23208.3 22801.6 23312.4 24083.0 23925.7 102.7 103.2 0.0 0.0 130.4 126.2 23967.6 23300.9 23283.6 24352.8 23394.1 24429.3 24015.6 123.8 118.6 0.0 0.0 103.2 139.0 24416.3 23390.4 23288.3 20609.6 22995.1 24364.5 24030.0 128.6 118.1 0.0 0.0 121.7 138.8 24185.5 

Sec. Current Mod.4B 

Field 1 - milliamps

Sec. Current Mod.4B 

Field 2 - milliamps

Sec. Current Mod.4B 

Field 3 - milliamps

Voltage M

1 - 

Voltage Mod. 4A Field 

1 - volts

Voltage Mod. 4A Field 

2 - volts

Voltage Mod. 4A Field 

3 - volts

11 of 14
Century Aluminum

AC Stack E.P. Control Device Data

Compliance Test Jan. 24 - 25, 2012

Date Time

01/24/12 17:46:3801/24/12 18:01:3901/24/12 18:17:3301/24/12 18:31:3901/24/12 18:46:3401/24/12 19:01:3901/24/12 19:16:3801/24/12 19:31:3801/24/12 19:46:3901/24/12 20:01:3901/24/12 20:16:3901/24/12 20:31:4401/24/12 20:46:3901/24/12 21:01:3901/24/12 21:16:3901/24/12 21:31:39

01/25/12 07:03:2001/25/12 07:17:0101/25/12 07:31:4601/25/12 07:46:5601/25/12 08:02:0101/25/12 08:16:4601/25/12 08:31:4101/25/12 08:46:4101/25/12 09:01:4101/25/12 09:16:4101/25/12 09:31:4101/25/12 09:46:4601/25/12 10:02:1201/25/12 10:16:3701/25/12 10:31:4101/25/12 10:46:4101/25/12 11:04:5101/25/12 11:16:4201/25/12 11:31:4701/25/12 11:46:3701/25/12 12:01:4601/25/12 12:16:3601/25/12 12:31:3701/25/12 12:46:4201/25/12 13:01:42

20000 29000 20000 29000 20000 29000 80 156 80 156 80 156 20000 

15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

2 hr rolling 

avg 15 Min.

Sec. Current Mod.4B 

Field 1 - milliamps

Sec. Current Mod.4B 

Field 2 - milliamps

Sec. Current Mod.4B 

Field 3 - milliamps

Voltage M

1 - 

Voltage Mod. 4A Field 

1 - volts

Voltage Mod. 4A Field 

2 - volts

Voltage Mod. 4A Field 

3 - volts

23390.4 23288.3 20609.6 22995.1 24364.5 24030.0 128.6 118.1 0.0 0.0 121.7 138.8 24185.5 23673.2 23374.8 24569.4 23530.2 24531.8 24033.2 141.9 121.2 0.0 0.0 113.2 139.6 1077.8 23429.3 23382.8 24505.8 23573.4 24339.8 24041.3 140.2 125.8 0.0 0.0 108.4 137.4 718.5 

14.3 20481.5 0.0 20702.5 0.0 21047.0 137.5 127.5 0.0 0.0 103.1 133.9 988.3 14.3 20481.5 0.0 20702.5 0.0 21047.0 137.5 127.5 0.0 0.0 103.1 133.9 988.3 

24019.5 20273.3 24429.3 20952.5 24608.3 21156.0 142.3 137.2 0.0 0.0 107.5 110.4 1038.9 23699.1 20323.1 24416.3 20960.4 24595.3 21176.7 139.0 139.1 0.0 0.0 126.1 113.3 898.8 23699.1 20323.1 24416.3 20960.4 24595.3 21176.7 139.0 139.1 0.0 0.0 126.1 113.3 898.8 23826.2 20377.6 24660.2 21466.8 24710.8 21220.0 139.8 140.4 0.0 0.0 117.9 112.8 911.8 23660.2 20379.2 23954.6 21401.1 24608.3 21513.1 143.1 140.6 0.0 0.0 103.1 110.2 898.8 21827.5 20148.5 24736.7 21422.0 23928.7 21437.7 141.9 140.6 0.0 0.0 106.1 109.4 936.4 23788.6 23166.8 24673.2 24533.4 24891.1 23818.6 142.9 141.2 0.0 0.0 121.3 110.8 988.3 23788.6 23166.8 24673.2 24533.4 24891.1 23818.6 142.9 141.2 0.0 0.0 121.3 110.8 988.3 22712.1 23416.8 23839.2 24429.2 15547.3 22673.2 140.7 141.2 0.0 0.0 105.0 111.1 744.5 23006.5 23290.2 24108.9 24389.1 22865.1 22455.3 141.3 141.0 0.0 0.0 120.9 112.8 847.0 22942.9 23195.7 24146.6 24355.4 24736.7 22472.9 141.5 141.3 0.0 0.0 512.7 161.1 834.0 

22647.2 20426.9 24813.2 20898.2 23019.5 20912.6 142.9 140.5 0.0 0.0 119.2 112.9 1154.3 24019.5 20411.0 22930.0 20641.9 24313.9 20850.2 142.5 140.7 0.0 0.0 114.2 112.8 1526.6 19173.8 19855.1 24697.8 20641.9 24557.7 20811.8 141.3 141.0 0.0 0.0 98.1 111.7 1539.6 24146.6 19917.5 24852.1 20624.2 24608.3 21013.6 142.5 141.2 0.0 0.0 117.9 113.3 1526.6 23300.9 22829.9 24557.7 23692.1 24466.9 24070.2 140.2 141.0 0.0 0.0 112.1 114.9 1424.1 24006.5 23036.6 24723.7 23722.6 24723.7 24102.3 142.1 141.6 0.0 0.0 117.1 115.7 1461.7 22609.6 22817.3 24377.4 23666.5 24390.4 24317.0 143.1 141.8 0.0 0.0 115.6 114.0 1474.7 23300.9 22900.6 24364.5 24414.6 23891.1 24246.4 140.9 141.9 0.0 0.0 114.0 113.5 1321.7 23481.2 23004.9 24096.0 24324.9 23967.6 24364.9 142.3 141.8 0.0 0.0 112.3 112.7 1129.7 23481.2 23004.9 24096.0 24324.9 23967.6 24364.9 142.3 141.8 0.0 0.0 112.3 112.7 1129.7 24364.5 23256.3 24723.7 24368.2 23634.2 24246.3 0.4 124.0 0.0 0.0 0.4 144.0 0.0 24108.9 23251.6 24569.4 24332.8 24403.4 24220.7 141.7 123.9 0.0 0.0 124.8 144.9 1398.2 23941.6 23331.7 17380.0 23435.6 23608.3 24113.3 138.2 123.7 0.0 0.0 116.5 145.4 1398.2 23941.6 23331.7 17380.0 23435.6 23608.3 24113.3 138.2 123.7 0.0 0.0 116.5 145.4 1398.2 23928.7 23472.4 24466.9 23397.2 23416.3 23890.7 141.5 123.8 0.0 0.0 124.2 147.8 1129.7 23300.9 23472.4 24647.2 23432.6 21019.5 23531.8 139.4 123.6 0.0 0.0 110.9 147.4 1295.7 19955.9 23031.8 24569.4 23491.7 24031.1 23539.7 143.8 123.8 0.0 0.0 125.4 149.1 1487.7 23634.2 23381.0 24249.0 23616.6 23762.6 23474.1 143.8 124.2 0.0 0.0 116.3 105.8 1500.6 23185.5 23233.6 24531.8 23592.6 24442.3 23575.1 142.7 142.0 0.0 0.0 111.9 119.7 1437.1 23185.5 23233.6 24531.8 23592.6 24442.3 23575.1 142.7 142.0 0.0 0.0 111.9 119.7 1437.1 23365.8 23027.1 24390.4 24279.8 23544.7 23562.3 144.0 142.7 0.0 0.0 121.3 118.0 949.4 23365.8 23027.1 24390.4 24279.8 23544.7 23562.3 144.0 142.7 0.0 0.0 121.3 118.0 949.4 

0.0 20050.4 0.0 21239.0 0.0 20572.6 145.4 142.8 0.0 0.0 110.0 115.8 1025.9 

23852.1 20040.9 24211.4 21207.0 24403.4 20696.0 0.0 125.1 0.0 0.0 0.0 100.3 0.0 24224.4 20156.3 22557.7 20945.9 24031.1 21072.5 144.0 125.6 0.0 0.0 115.8 100.9 1385.2 

12 of 14
Century Aluminum

AC Stack E.P. Control Device Data

Compliance Test Jan. 24 - 25, 2012

Date Time

01/24/12 07:01:3101/24/12 07:16:3701/24/12 07:31:3701/24/12 07:46:3701/24/12 08:01:3701/24/12 08:16:3601/24/12 08:31:3201/24/12 08:46:3201/24/12 09:01:4201/24/12 09:16:3201/24/12 09:32:1701/24/12 09:46:3701/24/12 10:01:4301/24/12 10:16:3201/24/12 10:31:3701/24/12 10:46:3801/24/12 11:01:3801/24/12 11:16:3801/24/12 11:31:3701/24/12 11:46:3701/24/12 12:04:1301/24/12 12:16:3701/24/12 12:31:3701/24/12 12:46:3701/24/12 13:01:3801/24/12 13:16:3701/24/12 13:31:3801/24/12 13:46:4201/24/12 14:01:4301/24/12 14:16:4301/24/12 14:49:3801/24/12 15:01:3301/24/12 15:17:2301/24/12 15:31:3801/24/12 15:46:3301/24/12 16:01:3801/24/12 16:16:4301/24/12 16:31:4301/24/12 16:46:4301/24/12 17:01:4301/24/12 17:16:5801/24/12 17:31:43

20000 29000

15 Min.

2 hr rolling 

avg

24531.8 3068.326094.7 9274.825120.6 12414.925736.7 15632.025954.6 18876.326120.6 22139.626120.6 22139.624159.5 25281.326364.5 25632.126364.5 25632.1

0.0 22468.1

26044.1 22506.525031.1 22391.126094.7 22387.826094.7 22387.825325.6 22371.825403.4 22251.618623.9 21341.826044.1 24597.326172.5 24613.325736.7 24701.525979.2 24687.125979.2 24687.1

0.0 21660.7

25518.8 20850.225518.8 20850.225684.8 21716.826262.0 21728.025889.8 21747.125749.7 21718.424660.2 25473.724660.2 25473.7

51.9 22299.9

24057.1 22096.525684.8 22024.323980.5 21785.725723.7 21782.426107.7 22032.322250.3 21731.026236.1 21761.524647.2 24835.926185.5 25102.0

Voltage Mod. 4B Field 

3 - volts

13 of 14
Century Aluminum

AC Stack E.P. Control Device Data

Compliance Test Jan. 24 - 25, 2012

Date Time

01/24/12 17:46:3801/24/12 18:01:3901/24/12 18:17:3301/24/12 18:31:3901/24/12 18:46:3401/24/12 19:01:3901/24/12 19:16:3801/24/12 19:31:3801/24/12 19:46:3901/24/12 20:01:3901/24/12 20:16:3901/24/12 20:31:4401/24/12 20:46:3901/24/12 21:01:3901/24/12 21:16:3901/24/12 21:31:39

01/25/12 07:03:2001/25/12 07:17:0101/25/12 07:31:4601/25/12 07:46:5601/25/12 08:02:0101/25/12 08:16:4601/25/12 08:31:4101/25/12 08:46:4101/25/12 09:01:4101/25/12 09:16:4101/25/12 09:31:4101/25/12 09:46:4601/25/12 10:02:1201/25/12 10:16:3701/25/12 10:31:4101/25/12 10:46:4101/25/12 11:04:5101/25/12 11:16:4201/25/12 11:31:4701/25/12 11:46:3701/25/12 12:01:4601/25/12 12:16:3601/25/12 12:31:3701/25/12 12:46:4201/25/12 13:01:42

20000 29000

15 Min.

2 hr rolling 

avg

Voltage Mod. 4B Field 

3 - volts

26185.5 25102.025852.1 25342.426325.6 25417.625967.6 25400.125967.6 25400.125505.8 25618.026556.4 25856.726556.4 25856.726275.0 25867.924608.3 25726.825647.2 25701.226761.3 25714.026761.3 25714.023788.6 25597.125582.4 25606.720430.6 24841.026287.9 25739.525044.1 25632.124108.9 25462.426044.1 25616.225839.2 25627.426197.1 25773.226018.2 25718.725813.2 25669.126107.7 25646.626107.7 25646.6

1.3 21921.9

26057.1 21923.524403.4 21744.024403.4 21744.023185.5 21409.225275.0 21341.926223.1 21356.425647.2 22143.024429.3 25196.524429.3 25196.526249.0 25372.726249.0 25372.725492.9 25265.4

0.0 22367.2

25198.4 22357.7

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