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 The average sulphur content of the coal in 1990 was 0.70 percent. 

 Analysis was conducted by the Poplar River Power Station laboratory. 

 Analysis of a monthly duplicate coal sample by an independent laboratory 

 indicated, on average, a 0.1 percent lower value. Testing for both 

 laboratories was done in accordance with ASTM procedure D3176. The 

 sulphur content of the fuel oil was 0.08 percent. 



General operations of the ash lagoons were similar to previous years. 

 Ash Lagoon No. 1 was used in the winter, with ash split between Ash 

 Lagoon No. 1 and Ash Lagoon No. 3 North in the summer. The Poplar River 

 Power Station continues to surcharge ash in Ash Lagoon No. 1. 



Similar operations are scheduled for 1991 but with more extensive use of 

 Ash Lagoon No . 3 North planned over the summer months . 



There was one reportable spill in 1990 due to human error. This spill 

 involved the discharge of ash/ash water. All clean up activity related 

 to this spill has been completed. No long term environmental damage as a 

 result of this spill is likely. The ash line monitoring program 

 continued. 



In 1989 the "Soil Salinity Project South of Morrison Dam" was initiated 

 with construction of four pumpwells and a connecting pipeline on the east 

 side of the East Poplar River. Initial pumping to Cookson Reservoir 

 started with one pump placed in service September 198 9. By December, 

 1989, two more pumpwells were placed into service. Three pump operation 

 continued to the end of 1990. Results for drawdown of groundwater eleva- 

 tions on the east side of the Poplar River have been encouraging. 



