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The results, as compared to Sask Power's continuous in-stack results for 

 corresponding time periods are as shown below. 



Stack Survey In-Sta ck M onitors % Agreement 



S0„ 3,057 2,971 within 3% 



NO 744 671 within 9% 



x 



Startup and Trip Conditions 



There were a number of startup and trip conditions throughout 1990. 

 Various turbine trips occurred caused by primary air heater leaks, 

 turbine repairs, boiler leaks, scheduled or non-scheduled maintenance 

 overhauls or operational problems. Oil firing during startup conditions 

 of various lengths always results in opacity level increases for periods 

 up to 24 hours following startup. 



Using the above 1990 stack emission figures and based on operations of 

 24-hrs/day, 292 days/yr (80% average capacity figures for Units 1 and 2) 

 emission totals would be as follows: 



Particulates - 3,322 tonnes/yr vs 2,856 tonnes in 1989 

 Sulphur Dioxide - 48,776 tonnes/yr vs 45,610 tonnes in 1989 

 Nitrogen Oxides - 11,963 tonnes/yr vs 12,643 tonnes in 1989 



