text_combined: pdci derate 8 21 01 market notification day ahead market closed pdci ttc n changed 2525 1757 mw n changed 1904 mw 1705 mw starting heol operating day 08 21 01 due unavailability bpa celilo valve group 8 first applicable hour run adjusted rating hour ahead market heo 5 08 21 01 inquiries please call 916 351 4409 please address real time operational inquiries real time scheduling desk 916 351 2493 system conditions described communication dynamic subject change iso attempted reflect current accurate information available preparing notice system conditions may change suddenly little notice