7 

 about 3 metres, this in turn allows higher operating levels for Ash Lagoon No. 3 North. 

 The pump pad was constructed by adding material to the dyke, no portion of the dyke 

 was excavated. 



Historically, surface flow from the switch yard, located north of the Poplar River Power 

 Station, flowed north unobstructed to Cookson Reservoir. In the last quarter of 1991 , the 

 drainage from this area was redirected south to the power station's surface water 

 drainage system which is controlled by Scribner Dam. Advantages of this change include 

 routine testing of water originating from the switch yard before release and more 

 importantly, a means of containment in the case of oil leaks from a transformer. 



2.3 Unusual Events 



There were no reportable spills during 1991. 



2.4 LIFAC 



In 1989, SaskPower entered into a joint venture with Tampella Ltd. of Finland to build a 

 demonstration unit for Tampella's LIFAC desulphurization process. The intent of the 

 project is to allow SaskPower an opportunity to fully evaluate the technology for possible 

 future applications while offering Tampella an opportunity to demonstrate the process to 

 other potential customers. 



