20230525AVU to IFG 73 Attachment D.pdf

Acvity ID Acvity Name Orig
Dur
Rem
Dur
Calc %
Comp
Actual %
Comp
Start Finish
Westside 230 kV Substation Re-Build, Phase 1 & 2 (26)Westside 230 kV Substation Re-Build, Phase 1 & 2 (26)1138 180 84.18%01-Dec-17 A 23-May-22
Planning PhasePlanning Phase 691 0 100%01-Dec-17 A 14-Aug-20 A
DesignDesign 691 0 100%01-Dec-17 A 14-Aug-20 A
DESIGN-1000 Physical Transmi%al Design 129 0 100%100%01-Dec-17 A 30-May-18 A
DESIGN-1010 Electrical Transmi%al Design 2.2 61 0 100%100%30-May-18 A 22-Aug-18 A
DESIGN-1120 Procure Steel for 230kV 82 0 100%100%30-May-18 A 20-Sep-18 A
DESIGN-1020 Procure Autotransformer 124 0 100%100%30-May-18 A 19-Nov-18 A
DESIGN-1030 Electrical Transmi%al Design 2.7 & 2.11 171 0 100%100%06-Jul-18 A 01-Mar-19 A
DESIGN-1040 Communica1ons Design 15 0 100%100%26-Nov-18 A 14-Dec-18 A
DESIGN-1130 Construciton Rev - Auto 2 42 0 100%100%28-Feb-19 A 26-Apr-19 A
DESIGN-1090 Electrical Transmi5al Design Bell - Coulee - Northwest Lines 329 0 100%100%01-May-19 A 14-Aug-20 A
DESIGN-1100 Electrical Design (Remote End - Nine Mile)10 0 100%100%01-Jul-20 A 15-Jul-20 A
DESIGN-1140 Protec1on Design (Nine Mile Remote End)5 0 100%100%26-Aug-19 A 30-Aug-19 A
DESIGN-1050 Communica1ons Design (Nine Mile Substa1on)15 0 100%100%01-Oct-19 A 21-Oct-19 A
DESIGN-1060 Communica1ons Design (Nine Mile Remote End)15 0 100%100%22-Oct-19 A 11-Nov-19 A
DESIGN-1070 Communica1ons Design (Northwest Substa1on)1 0 100%100%12-Nov-19 A 12-Nov-19 A
PRE-W M 1030 Procure Sta1c Mast Structures 112 0 100%100%28-Feb-19 A 06-Aug-19 A
Panel House / Battery Room HVAC DesignPanel House / Battery Room HVAC Design 50 0 100%03-Sep-19 A 11-Nov-19 A
DESIGN-1150 Prepare Ini1al Phase (30% Drawing/Spec Package) - HDR 0 0 100%100%03-Sep-19 A
DESIGN-1160 Prepare Final Phase (90% Drawing/Spec Package) - HDR 19 0 100%100%04-Sep-19 A 30-Sep-19 A
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Prepare Ini1al Phase (30% Drawing/Spec Package) - HDR
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
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SUBSTATION MASTER SCHEDULE
POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 1 of 30
IFG_PR_073 Attachment D Page 1 of 30
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DESIGN-1170 Review 30% Design - AVI 10 0 100%100%01-Oct-19 A 14-Oct-19 A
DESIGN-1180 Issue for Construc1on - HDR 30 0 100%100%01-Oct-19 A 11-Nov-19 A
DESIGN-1190 Review 90% Design - AVI 11 0 100%100%28-Oct-19 A 11-Nov-19 A
DESIGN-1200 Submit Material List - HDR 30 0 100%100%01-Oct-19 A 11-Nov-19 A
DESIGN-1210 Submit Equipment List - HDR 30 0 100%100%01-Oct-19 A 11-Nov-19 A
DESIGN-1220 HVAC Design Complete 0 0 100%100%11-Nov-19 A
Execution PhaseExecution Phase 991 135 86.38%24-Apr-18 A 21-Mar-22
Pre-workPre-work 228 0 100%24-Apr-18 A 15-Mar-19 A
OUTAGE - Main 230kV Bus (Prefer September)OUTAGE - Main 230kV Bus (Prefer September)187 0 100%28-Jun-18 A 15-Mar-19 A
PRE-W O-1000 Aux Bus 230kV Outage (Removal)1 0 100%100%28-Jun-18 A 28-Jun-18 A
PRE-W O-1010 Hold Scheduled Outage - 230kV Main Bus Outage (Replace Old
Auto 2 DE)
5 0 100%100%11-Mar-19 A 15-Mar-19 A
Mechanical Pre-workMechanical Pre-work 233 0 100%24-Apr-18 A 14-Mar-19 A
PRE-W M-1130 Fabricate Steel Structures (230kV)31 0 100%100%24-Apr-18 A 05-Jun-18 A
PRE-W M-1010 Mobilize Mechanical Crew 6 0 100%100%01-Jun-18 A 08-Jun-18 A
PRE-W M-1020 Excava1on, Ftgs & Concrete (115kV)41 0 100%100%11-Jun-18 A 06-Aug-18 A
PRE-W M-1030 Remove Ftgs & Steel Aux Bus 5 0 100%100%25-Jun-18 A 29-Jun-18 A
PRE-W M-1050 Install Trenwa (115kV)7 0 100%100%07-Aug-18 A 15-Aug-18 A
PRE-W M-1060 Excava1on, Ftgs & Concrete (Auto 2 Pad)51 0 100%100%31-Aug-18 A 09-Nov-18 A
PRE-W M-1000 Fabricate Steel Structures (115kV)50 0 100%100%03-Sep-18 A 09-Nov-18 A
PRE-W M-1160 Excava1on, Ftgs & Concrete (Deadend Founda1ons, etc)25 0 100%100%01-Nov-18 A 05-Dec-18 A
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HVAC Design Complete
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
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Unassigned
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Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 2 of 30
IFG_PR_073 Attachment D Page 2 of 30
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PRE-W M-1040 Install Steel Structures (115kV)5 0 100%100%12-Nov-18 A 16-Nov-18 A
PRE-W M-1070 Mechanical Pre-Work Complete (115kV)0 0 100%100%04-Jan-19 A
PRE-W M-1140 Remove Old Auto 2 Deadend 1 0 100%100%12-Mar-19 A 12-Mar-19 A
PRE-W M-1150 Erect Auto 2 Coulee Deadend 2 0 100%100%13-Mar-19 A 14-Mar-19 A
Transmission Pre-workTransmission Pre-work 5 0 100%11-Mar-19 A 15-Mar-19 A
PRE-W T-1010 Remove 230kV Old Auto 2 Conductor 1 0 100%100%11-Mar-19 A 11-Mar-19 A
PRE-W T-1000 Remove 230kV Old Auto 1 Conductor 1 0 100%100%12-Mar-19 A 12-Mar-19 A
PRE-W T-1020 Erect 230kV Old Auto 2 Conductor 1 0 100%100%15-Mar-19 A 15-Mar-19 A
Electrical Pre-workElectrical Pre-work 166 0 100%09-Jul-18 A 04-Mar-19 A
PRE-W E-1000 Remove Par1al Aux Bus 230kV 5 0 100%100%09-Jul-18 A 13-Jul-18 A
PRE-W E-1010 Connect to R-385 Air Switch 1 0 100%100%04-Mar-19 A 04-Mar-19 A
Build Sunset A-956Build Sunset A-956 145 0 100%13-Aug-18 A 08-Mar-19 A
OUTAGESOUTAGES 13 0 100%20-Feb-19 A 08-Mar-19 A
SUN O-1000 115 kV SW Bus Outage 1 0 100%100%20-Feb-19 A 20-Feb-19 A
SUN O-1010 Hold Scheduled Outage - Sunset 115kV Outage 10 0 100%100%25-Feb-19 A 08-Mar-19 A
Mechanical WorkMechanical Work 74 0 100%16-Nov-18 A 28-Feb-19 A
SUN M-1000 Mechcanical Work Complete (Pre-Outage)0 0 100%100%16-Nov-18 A
SUN M-1010 Place Surface Rock (SUN)4 0 100%100%25-Feb-19 A 28-Feb-19 A
Electrical WorkElectrical Work 36 0 100%02-Jan-19 A 20-Feb-19 A
SUN E-1080 Mobilize Electrical Crew 3 0 100%100%02-Jan-19 A 04-Jan-19 A
SUN E-1030 Construct Relay Panel A-956 11 0 100%100%07-Jan-19 A 21-Jan-19 A
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Mechanical Pre-Work Complete (115kV)
Mechcanical Work Complete (Pre-Outage)
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
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Cri1cal Milestone
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SUBSTATION MASTER SCHEDULE
POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 3 of 30
IFG_PR_073 Attachment D Page 3 of 30
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SUN E-1020 Grounding and Pull Wire 5 0 100%100%07-Jan-19 A 11-Jan-19 A
SUN E-1010 Install Breaker A-956 4 0 100%100%09-Jan-19 A 14-Jan-19 A
SUN E-1040 Field Wiring A-956 4 0 100%100%14-Jan-19 A 17-Jan-19 A
SUN E-1000 Install Air Switches A-956 5 0 100%100%21-Jan-19 A 25-Jan-19 A
SUN E-1050 Gas Breaker A-956 1 0 100%100%21-Jan-19 A 21-Jan-19 A
SUN E-1060 Breaker Commissioning Tes1ng A-956 1 0 100%100%01-Feb-19 A 01-Feb-19 A
SUN E-1090 Install Exterior Site Ligh1ng 3 0 100%100%18-Feb-19 A 20-Feb-19 A
SUN E-1070 Electrical Work Complete A-956 0 0 100%100%20-Feb-19 A
Relay Tech WorkRelay Tech Work 144 0 100%13-Aug-18 A 07-Mar-19 A
SUN R-1000 Protec1on Se5ngs (A-956)5 0 100%100%13-Aug-18 A 17-Aug-18 A
SUN R-1010 Yellow Lining Sunset 8 0 100%100%02-Jan-19 A 11-Jan-19 A
SUN R-1020 Points List (A-956)6 0 100%100%04-Jan-19 A 11-Jan-19 A
SUN R-1080 SCADA Programming Sunset A-956 29 0 100%100%11-Jan-19 A 20-Feb-19 A
SUN R-1040 PT/CT Tes1ng 19 0 100%100%15-Jan-19 A 08-Feb-19 A
SUN R-1060 Relay & SCADA Checkout 1 0 100%100%26-Feb-19 A 26-Feb-19 A
SUN R-1030 Program Relays 6 0 100%100%27-Feb-19 A 06-Mar-19 A
SUN R-1050 Relay Panel Checkout 2 0 100%100%06-Mar-19 A 07-Mar-19 A
SUN R-1070 Relay Work Complete 0 0 100%100%07-Mar-19 A
Transmission WorkTransmission Work 7 0 100%28-Feb-19 A 08-Mar-19 A
SUN T-1000 Construct Sunset 115kV Trans - Pre-work 7 0 100%100%28-Feb-19 A 08-Mar-19 A
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Electrical Work Complete A-956
Relay Work Complete
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
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Cri1cal Remaining Work
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Cri1cal Milestone
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SUBSTATION MASTER SCHEDULE
POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 4 of 30
IFG_PR_073 Attachment D Page 4 of 30
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SUN T-1020 Complete Sunset 115kV Trans and Removals 6 0 100%100%01-Mar-19 A 08-Mar-19 A
SUN T-1010 Add First Span Sunset 115kV 6 0 100%100%01-Mar-19 A 08-Mar-19 A
CommissioningCommissioning 25 0 100%04-Feb-19 A 08-Mar-19 A
SUN C-1000 PT/CT Tes1ng 5 0 100%100%04-Feb-19 A 08-Feb-19 A
SUN C-1010 End to End Tes1ng 1 0 100%100%06-Mar-19 A 06-Mar-19 A
SUN C-1020 Commissioning Complete 0 0 100%100%08-Mar-19 A
SE Bus 115kVSE Bus 115kV 415 0 100%04-Feb-19 A 20-Sep-20 A
OUTAGESOUTAGES 4 0 100%17-Sep-20 A 20-Sep-20 A
Auto 2 O-1050 Hold Scheduled Outage - Old 115kV Bus Outage 4 0 100%100%17-Sep-20 A 20-Sep-20 A
Mechanical WorkMechanical Work 10 0 100%25-Feb-19 A 08-Mar-19 A
Auto 2 M-1010 Install Ftgs & Steel Structures (A-964)7 0 100%100%25-Feb-19 A 05-Mar-19 A
Auto 2 M-1030 Install Nine Mile Steel Bus Structure 7 0 100%100%25-Feb-19 A 05-Mar-19 A
Auto 2 M-1000 Remove Ftgs & Steel (Old Sunset, A-410)3 0 100%100%06-Mar-19 A 08-Mar-19 A
Electrical WorkElectrical Work 117 0 100%04-Feb-19 A 18-Jul-19 A
Auto 2 E-1000 Remove OCB A-410 (Old Sunset Line) including Temp
Configura1on & Air Switches
5 0 100%100%11-Mar-19 A 15-Mar-19 A
NMS E-1080
Air Switches
5 0 100%100%11-Mar-19 A 15-Mar-19 A
Auto 2 E-1290 Install Air Switch Nine Mile Bus 2 0 100%100%28-Mar-19 A 29-Mar-19 A
Auto 2 E-1110 Install 115kV Air Switches 10 0 100%100%04-Feb-19 A 15-Feb-19 A
Auto 2 E-1100 Construct 115kV Southeast Bus 19 0 100%100%04-Feb-19 A 28-Feb-19 A
Auto 2 E-1120 Install 115kV Breakers (A-962 & A-964)10 0 100%100%18-Mar-19 A 29-Mar-19 A
Auto 2 E-1130 Grounding 115kV Side 27 0 100%100%03-Apr-19 A 09-May-19 A
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Commissioning Complete
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
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Remaining Work
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Planned Outage Bar
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Cri1cal Remaining Work
Milestone
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Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 5 of 30
IFG_PR_073 Attachment D Page 5 of 30
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Auto 2 E-1170 Field Wiring (115kV Equipment)20 0 100%100%08-Apr-19 A 03-May-19 A
Auto 2 E-1160 Construct Realy Panel SE Bus 21 0 100%100%23-Apr-19 A 21-May-19 A
Auto 2 E-1180 Gas Breakers A-962 and A-964 2 0 100%100%21-May-19 A 22-May-19 A
Auto 2 E-1190 Breaker Commissioning Tes1ng A-962 & A-964 2 0 100%100%23-May-19 A 24-May-19 A
Auto 2 E-1210 Electrical Work Complete (115kV)1 0 100%100%28-May-19 A 28-May-19 A
Auto 2 E-1420 Build Integra1on Panel 10 0 100%100%05-Jul-19 A 18-Jul-19 A
Relay Tech WorkRelay Tech Work 222 0 100%09-Apr-19 A 21-Feb-20 A
Auto 2 R-1010 Protec1on Se5ngs (Auto 2, 230kV N Bus, 115kV SE Bus)44 0 100%100%09-Apr-19 A 10-Jun-19 A
Auto 2 R-1090 Yellow Lining (Auto 2, SE Bus)52 0 100%100%19-Jun-19 A 30-Aug-19 A
Auto 2 R-1020 Points List (Auto 2, 230kV N Bus, 115kV SE Bus)8 0 100%100%10-Jul-19 A 19-Jul-19 A
Auto 2 R-1040 Program Relays SE Bus 5 0 100%100%01-Oct-19 A 07-Oct-19 A
Design-133 SCADA Programming Auto 2, N Bus 230kV, SE Bus 115kV 12 0 100%100%15-Oct-19 A 30-Oct-19 A
Auto 2 R-1050 PT/CT Tes1ng SE Bus 51 0 100%100%25-Nov-19 A 07-Feb-20 A
Auto 2 R-1070 Relay Panel Checkout SE Bus 52 0 100%100%03-Dec-19 A 21-Feb-20 A
Design-153 Program Integra1on Remaining 38 0 100%100%23-Dec-19 A 21-Feb-20 A
Auto 2 R-1190 Relay & SCADA Checkout N Bus, SE Bus, Auto 2 30 0 100%100%06-Jan-20 A 21-Feb-20 A
Auto 2 R-1180 Relay Work Complete SE Bus 0 0 100%100%21-Feb-20 A
Transmission WorkTransmission Work 205 0 100%02-Dec-19 A 18-Sep-20 A
Auto 2 T-1080 Pull Sta1c Wire SE Sta1c Mast to 115kV DE's 2 0 100%100%02-Dec-19 A 03-Dec-19 A
Auto 2 T-1040 Erect 115kV Side Auto 2 Conductor ****(During Old 115 kV Bus
Outage)****
2 0 100%100%17-Sep-20 A 18-Sep-20 A
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Relay Work Complete SE Bus
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
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Remaining Work
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Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 6 of 30
IFG_PR_073 Attachment D Page 6 of 30
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Auto 2 T-1030 Remove 115 kV Old Auto 1 Conductor ****(During Old 115 kV
Bus Outage)****
2 0 100%100%17-Sep-20 A 18-Sep-20 A
Auto 2 T-1060 Pull Sta1c Wire from New Auto 2 to 115kV DE's ****(During Old
115 kV Bus Outage)****
2 0 100%100%17-Sep-20 A 18-Sep-20 A
CommissioningCommissioning 2 0 100%17-Sep-20 A 18-Sep-20 A
Auto 2 C-1030 PT/CT Tes1ng SE Bus 2 0 100%100%17-Sep-20 A 18-Sep-20 A
Auto 2 C-1090 Commissioning Complete SE Bus 0 0 100%100%18-Sep-20 A
N Bus 230kVN Bus 230kV 417 0 100%05-Mar-19 A 21-Oct-20 A
OUTAGESOUTAGES 155 0 100%17-Feb-20 A 23-Sep-20 A
Auto 2 O-1010 Hold Scheduled Outage - Autotransformer 1 Outage R-630
(17-Feb-19 to 16-Mar-19)
22 0 100%100%17-Feb-20 A 17-Mar-20 A
Auto 2 O-1070 Complete - Hold Scheduled Outage - Autotransformer 1 Outage
R-630
19 0 100%100%18-Feb-20 A 13-Mar-20 A
Auto 2 O-1020 Hold Scheduled Outage - 230kV Main Bus Outage (Auto 2
Conductor)
3 0 100%100%21-Sep-20 A 23-Sep-20 A
Mechanical WorkMechanical Work 186 0 100%05-Mar-19 A 22-Nov-19 A
PRE-W M-1100 Install Steel Structures (230kV)4 0 100%100%05-Mar-19 A 08-Mar-19 A
PRE-W M-1110 Install Trenwa (230kV)5 0 100%100%01-May-19 A 07-May-19 A
PRE-W M-1170 Excava1on, Ftgs & Concrete (Remaining 230kV Founda1ons)11 0 100%100%02-Aug-19 A 16-Aug-19 A
Auto 2 M-1020 Set Sta1c Mast Structures 38 0 100%100%01-Oct-19 A 21-Nov-19 A
PRE-W M 1020 Place Surface Rock 15 0 100%100%04-Nov-19 A 22-Nov-19 A
Electrical WorkElectrical Work 371 0 100%18-Mar-19 A 28-Aug-20 A
Auto 2 E-1480 Resume Work aNer Suspension Due to COVID-19 0 0 100%100%13-Apr-20 A
Auto 2 E-1220 Install 230kV Air Switch (R-630 & R-638)10 0 100%100%18-Mar-19 A 29-Mar-19 A
Auto 2 E-1440 Field Wiring 230/115kV Bus Pre Outage 53 0 100%100%26-Dec-19 A 17-Mar-20 A
Auto 2 E-1460 Complete Field Wiring 230/115kV Bus Pre Outage 5 0 100%100%17-Aug-20 A 21-Aug-20 A
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Commissioning Complete SE Bus
Resume Work aNer Suspension Due to COVID-19
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
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Planned Outage Bar
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Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 7 of 30
IFG_PR_073 Attachment D Page 7 of 30
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Auto 2 E-1140 Construct Relay Panel N Bus 35 0 100%100%08-Apr-19 A 24-May-19 A
Auto 2 E-1300 Install Breaker R-630 5 0 100%100%29-May-19 A 04-Jun-19 A
Auto 2 E-1410 Field Wiring R-630 (Pre-Outage)5 0 100%100%05-Jun-19 A 11-Jun-19 A
Auto 2 E-1310 Gas Breaker R-630 1 0 100%100%12-Jun-19 A 12-Jun-19 A
Auto 2 E-1400 Breaker Commissioning Tes1ng R-630 1 0 100%100%13-Jun-19 A 13-Jun-19 A
Auto 2 E-1330 Electrical Work Complete R-630 1 0 100%100%14-Jun-19 A 14-Jun-19 A
Auto 2 E-1240 Grounding 230kV Side 10 0 100%100%17-Jun-19 A 28-Jun-19 A
Auto 2 E-1230 Install Breaker R-638 5 0 100%100%01-Jul-19 A 08-Jul-19 A
Auto 2 E-1250 Field Wiring 230kV Equipment 42 0 100%100%09-Jul-19 A 05-Sep-19 A
Auto 2 E-1200 Control Enclosure Wiring 11 0 100%100%06-Sep-19 A 20-Sep-19 A
Auto 2 E-1350 Field Wiring R-638 64 0 100%100%06-Sep-19 A 06-Dec-19 A
Auto 2 E-1270 Gas Breaker R-638 1 0 100%100%09-Dec-19 A 09-Dec-19 A
Auto 2 E-1280 Breaker Commissioning Tes1ng R-638 1 0 100%100%10-Dec-19 A 10-Dec-19 A
Auto 2 E-1260 Build 230kV N Bus 27 0 100%100%03-Feb-20 A 17-Mar-20 A
Auto 2 E-1470 Build 230kV N Bus 5 0 100%100%17-Aug-20 A 21-Aug-20 A
Auto 2 E-1340 Electrical Work Complete (230kV)0 0 100%100%21-Aug-20 A
Auto 2 E-1320 Field Wiring R-630 ****(During Auto 1 Outage)****5 0 100%100%24-Aug-20 A 28-Aug-20 A
Relay Tech WorkRelay Tech Work 382 0 100%18-Mar-19 A 15-Sep-20 A
Auto 2 R-1000 Yellow Lining N Bus 230kV 10 0 100%100%18-Mar-19 A 29-Mar-19 A
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Electrical Work Complete (230kV)
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
Remaining Level of Effort
Actual Level of Effort
Remaining Work
Actual Work
Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 8 of 30
IFG_PR_073 Attachment D Page 8 of 30
Acvity ID Acvity Name Orig
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Auto 2 R-1030 Program Relays 230kV N Bus 10 0 100%100%28-May-19 A 10-Jun-19 A
Auto 2 R-1200 PT/CT Tes1ng R-630 5 0 100%100%13-Jun-19 A 19-Jun-19 A
Auto 2 R-1230 Develop Tes1ng and Commissioning Plan (Auto 1)5 0 100%100%20-Jun-19 A 26-Jun-19 A
Auto 2 R-1120 PT/CT Tes1ng 230kV N Bus 58 0 100%100%16-Sep-19 A 06-Dec-19 A
Auto 2 R-1130 Relay Panel Checkout 230kV N Bus 65 0 100%100%09-Dec-19 A 17-Mar-20 A
Auto 2 R-1250 Complete Relay Panel Checkout 230kV N Bus 5 0 100%100%24-Aug-20 A 28-Aug-20 A
Auto 2 R-1140 Relay Work Complete 230kV N Bus 0 0 100%100%28-Aug-20 A
Auto 2 R-1150 Relay & SCADA Checkout R-630 5 0 100%100%08-Sep-20 A 14-Sep-20 A
Auto 2 R-1210 Relay Panel Checkout Auto 1 5 0 100%100%08-Sep-20 A 14-Sep-20 A
Auto 2 R-1220 Relay Work Complete R-630 1 0 100%100%15-Sep-20 A 15-Sep-20 A
Transmission WorkTransmission Work 16 0 100%31-Aug-20 A 22-Sep-20 A
Auto 2 T-1100 Pull Sta1c Wire from NE Sta1c Mast to 230kV Dead Ends 1 0 100%100%31-Aug-20 A 31-Aug-20 A
Auto 2 T-1110 Pull Sta1c Wire NW Pole Over R-630 to Dead End Over Auto 1 to
Dead End ****(During Auto 1 Outage)****
2 0 100%100%31-Aug-20 A 01-Sep-20 A
Auto 2 T-1010 Erect 230kV Side Auto 2 Conductor ****(During 230kV Bus
Outage)****
1 0 100%100%21-Sep-20 A 21-Sep-20 A
Auto 2 T-1000 Remove 230kV Old Auto 2 Conductor ****(During 230kV Bus
Outage)****
1 0 100%100%21-Sep-20 A 21-Sep-20 A
Auto 2 T-1050 Add First Span to Coulee and Bell 230kV Trans Poles and Pull
Sta1c Wire ***(Complete before end of Auto 2 Outage)***
2 0 100%100%21-Sep-20 A 22-Sep-20 A
Auto 2 T-1070 Pull Sta1c Wire from New Auto 1 and 2 to 230kV DE's
****(During 230kV Bus Outage)****
2 0 100%100%21-Sep-20 A 22-Sep-20 A
Auto 2 T-1120 Remove Sta1c Wires for Old Auto 1 D.E. to Bell and Coulee D.E.'s
****(During 230kV Bus Outage)****
2 0 100%100%21-Sep-20 A 22-Sep-20 A
CommissioningCommissioning 203 0 100%23-Dec-19 A 21-Oct-20 A
Auto 2 C-1020 PT/CT Tes1ng 230kV N Bus 55 0 100%100%23-Dec-19 A 17-Mar-20 A
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Relay Work Complete 230kV N Bus
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
Remaining Level of Effort
Actual Level of Effort
Remaining Work
Actual Work
Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE
POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 9 of 30
IFG_PR_073 Attachment D Page 9 of 30
Acvity ID Acvity Name Orig
Dur
Rem
Dur
Calc %
Comp
Actual %
Comp
Start Finish
Auto 2 C-1000 PT/CT Tes1ng R-630 5 0 100%100%01-Jun-20 A 05-Jun-20 A
Auto 2 C-1100 Complete PT/CT Tes1ng 230kV N Bus 10 0 100%100%24-Aug-20 A 14-Sep-20 A
Auto 2 C-1040 End to End Tes1ng R-630 5 0 100%100%15-Sep-20 A 21-Sep-20 A
Auto 2 C-1060 Commissioning Complete R-630 0 0 100%100%21-Oct-20 A
Auto 2Auto 2 786 15 98.09%19-Nov-18 A 27-Dec-21
OUTAGESOUTAGES 10 0 100%21-Sep-20 A 30-Sep-20 A
Auto 2 O-1030 Hold Scheduled Outage - Old Auto 2 Outage (including
Transformer Soak)
10 0 100%100%21-Sep-20 A 30-Sep-20 A
Mechanical WorkMechanical Work 290 0 100%12-Aug-19 A 30-Sep-20 A
PRE-W M-1090 Install Concrete (New Auto 2 Deadend)3 0 100%100%12-Aug-19 A 14-Aug-19 A
PRE-W M-1080 Remove Old Auto 1 Deadend ****(During Auto 2 Outage)****8 0 100%100%21-Sep-20 A 30-Sep-20 A
PRE-W M-1120 Mechanical Work Complete 0 0 100%100%30-Sep-20 A
Electrical WorkElectrical Work 786 15 98.09%19-Nov-18 A 27-Dec-21
Auto 2 E-1010 Pre-work for Receive/Comm Auto 2 1 0 100%100%19-Nov-18 A 19-Nov-18 A
Auto 2 E-1020 Receive Autotransformer 2 (Manufacturer)1 0 100%100%20-Nov-18 A 20-Nov-18 A
Auto 2 E-1030 Manufacturer Transformer Commissioning/Tes1ng 8 0 100%100%07-Jan-19 A 16-Jan-19 A
Auto 2 E-1040 Construct Auto 2 40 0 100%100%23-Sep-19 A 15-Nov-19 A
Auto 2 E-1450 Complete Auto 2 Work 3 0 100%100%21-Sep-20 A 23-Sep-20 A
Auto 2 E-1150 Construct Relay Panels Auto 2 16 0 100%100%29-Apr-19 A 20-May-19 A
Auto 2 E-1060 Grounding Auto 2 1 0 100%100%19-Sep-19 A 19-Sep-19 A
Auto 2 E-1070 Field Wiring Auto 2 including Serveron 35 0 100%100%30-Sep-19 A 15-Nov-19 A
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Commissioning Complete R-630
Mechanical Work Complete
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
Remaining Level of Effort
Actual Level of Effort
Remaining Work
Actual Work
Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 10 of 30
IFG_PR_073 Attachment D Page 10 of 30
Acvity ID Acvity Name Orig
Dur
Rem
Dur
Calc %
Comp
Actual %
Comp
Start Finish
Auto 2 E-1080 Serveron Commissioning 2 0 100%100%14-Nov-19 A 15-Nov-19 A
Auto 2 E-1090 Electrical Work Complete (Auto 2)0 0 100%100%15-Nov-19 A
Auto 2 E-1050 Auto 2 Sta1on Service 78 0 100%100%18-Nov-19 A 17-Mar-20 A
Auto 2 E-1390 Install Exterior Site Ligh1ng 3 0 100%100%26-Dec-19 A 30-Dec-19 A
Auto 2 E-1490 Complete Auto 2 Sta1on Service 10 0 100%100%10-Aug-20 A 21-Aug-20 A
Auto 2 E-1370 Auto 2 Final Connec1ons (115kV Side)2 0 100%100%21-Sep-20 A 22-Sep-20 A
Auto 2 E-1360 Auto 2 Final Connec1ons (230kV Side)2 0 100%100%30-Sep-20 A 01-Oct-20 A
Auto 2 E-1430 Complete Red Lines Send tp Project Engineer 15 0 100%100%04-Jan-21 A 22-Jan-21 A
Auto 2 E-1500 Complete Auto 2 Electrical As-builts 15 15 0%0%06-Dec-21*27-Dec-21
Relay Tech WorkRelay Tech Work 234 0 100%23-Sep-19 A 21-Aug-20 A
Auto 2 R-1060 Program Relays Auto 2 5 0 100%100%16-Dec-19 A 20-Dec-19 A
Auto 2 R-1160 PT/CT Tes1ng Auto 2 33 0 100%100%23-Dec-19 A 07-Feb-20 A
Auto 2 R-1170 Relay Panel Checkout Auto 2 44 0 100%100%23-Dec-19 A 02-Mar-20 A
Design-1430 Program Integra1on Auto 2 2 0 100%100%16-Dec-19 A 17-Dec-19 A
Auto 2 R-1240 Relay Work Complete Auto 2 10 0 100%100%10-Aug-20 A 21-Aug-20 A
Auto 2 R-1100 Develop Tes1ng and Commissioning Plan (Auto 2)5 0 100%100%23-Sep-19 A 27-Sep-19 A
CommissioningCommissioning 23 0 100%21-Sep-20 A 21-Oct-20 A
Auto 2 C-1010 PT/CT Tes1ng Auto 2 5 0 100%100%21-Sep-20 A 25-Sep-20 A
Auto 2 C-1050 End to End Tes1ng Auto 2 5 0 100%100%01-Oct-20 A 07-Oct-20 A
Auto 2 C-1080 Complete Relay Test Results and As-builts 10 0 100%100%08-Oct-20 A 21-Oct-20 A
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Electrical Work Complete (Auto 2)
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
Remaining Level of Effort
Actual Level of Effort
Remaining Work
Actual Work
Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE
POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 11 of 30
IFG_PR_073 Attachment D Page 11 of 30
Acvity ID Acvity Name Orig
Dur
Rem
Dur
Calc %
Comp
Actual %
Comp
Start Finish
Auto 2 C-1070 Commissioning Complete Auto 2, N Bus, SE Bus 0 0 100%100%21-Oct-20 A
CommunicationsCommunications 71 0 100%19-Jul-19 A 28-Oct-19 A
Auto 2
COM-1010
Ruggedcom Configura1on 1 0 100%100%19-Jul-19 A 19-Jul-19 A
Auto 2
COM-1000
Fiber Termina1on Support 5 0 100%100%07-Oct-19 A 11-Oct-19 A
Auto 2
COM-1020
Communica1ons Work Complete Auto 2, 230kV, 115kV 1 0 100%100%28-Oct-19 A 28-Oct-19 A
Build Nine Mile A-968Build Nine Mile A-968 373 0 100%28-Feb-19 A 14-Aug-20 A
OUTAGESOUTAGES 26 0 100%06-Jul-20 A 10-Aug-20 A
NMS O-1000 Hold Scheduled Outage - Nine Mile Line Outage 26 0 100%100%06-Jul-20 A 10-Aug-20 A
NMS O-1020 115kV SE Bus Outage (First)1 0 100%100%06-Jul-20 A 06-Jul-20 A
NMS O-1010 115kV SE Bus Outage (Second)1 0 100%100%10-Aug-20 A 10-Aug-20 A
Mechanical WorkMechanical Work 373 0 100%28-Feb-19 A 14-Aug-20 A
NMS M-1000 Mechanical Pre-work Complete A-968 0 0 100%100%28-Feb-19 A
NMS M-1010 Remove Ftgs & Steel (A-411 & A-413)5 0 100%100%07-Jul-20 A 13-Jul-20 A
NMS M-1020 Install Ftgs & Steel Structures (A-968 & A-970)5 0 100%100%14-Jul-20 A 20-Jul-20 A
NMS M-1030 Place Surface Rock (NMS)5 0 100%100%10-Aug-20 A 14-Aug-20 A
Electrical WorkElectrical Work 26 0 100%06-Jul-20 A 10-Aug-20 A
NMS E-1090 Remove A-413 (Old Nine Mile)4 0 100%100%06-Jul-20 A 09-Jul-20 A
NMS E-1000 Construct Relay Panel A-968 5 0 100%100%20-Jul-20 A 24-Jul-20 A
NMS E-1100 Install Air Switches (A-1069 & Bus)14 0 100%100%21-Jul-20 A 07-Aug-20 A
NMS E-1010 Install Air Switch A-968 2 0 100%100%03-Aug-20 A 04-Aug-20 A
NMS E-1050 Gas Breaker A-968 1 0 100%100%05-Aug-20 A 05-Aug-20 A
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Commissioning Complete Auto 2, N Bus, SE Bus
Mechanical Pre-work Complete A-968
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
Remaining Level of Effort
Actual Level of Effort
Remaining Work
Actual Work
Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 12 of 30
IFG_PR_073 Attachment D Page 12 of 30
Acvity ID Acvity Name Orig
Dur
Rem
Dur
Calc %
Comp
Actual %
Comp
Start Finish
NMS E-1020 Install Breaker A-968, A-971 & A-1071 3 0 100%100%05-Aug-20 A 07-Aug-20 A
NMS E-1130 Install PT's 3 0 100%100%05-Aug-20 A 07-Aug-20 A
NMS E-1040 Field Wiring A-968 4 0 100%100%05-Aug-20 A 10-Aug-20 A
NMS E-1030 Grounding 4 0 100%100%05-Aug-20 A 10-Aug-20 A
NMS E-1120 Wiring MTC, AC, DC, Comms and Other Devices 4 0 100%100%05-Aug-20 A 10-Aug-20 A
NMS E-1060 Breaker Commissioning Tes1ng A-968 1 0 100%100%06-Aug-20 A 06-Aug-20 A
NMS E-1110 Install Exterior Site Ligh1ng 2 0 100%100%06-Aug-20 A 07-Aug-20 A
NMS E-1070 Electrical Work Complete A-968 0 0 100%100%07-Aug-20 A
Relay Tech WorkRelay Tech Work 17 0 100%21-Jul-20 A 12-Aug-20 A
NMS R-1000 Protec1on Se5ngs (Nine Mile A-968)4 0 100%100%21-Jul-20 A 24-Jul-20 A
NMS R1080 Develop Tes1ng and Commissioning Plan (NMS)2 0 100%100%24-Jul-20 A 27-Jul-20 A
NMS R-1005 Protec1on Se5ngs Deployed (Nine Mile A-968)0 0 100%100%24-Jul-20 A
NMS R-1010 Points List (Nine Mile A-968)5 0 100%100%27-Jul-20 A 31-Jul-20 A
NMS R-1030 Program Relays 3 0 100%100%03-Aug-20 A 05-Aug-20 A
NMS R-1020 SCADA Programming Nine Mile A-968 6 0 100%100%03-Aug-20 A 10-Aug-20 A
NMS R-1060 PT/CT Tes1ng 2 0 100%100%05-Aug-20 A 06-Aug-20 A
NMS R-1040 Relay Panel Checkout 2 0 100%100%06-Aug-20 A 07-Aug-20 A
NMS R-1050 Relay & SCADA Checkout 2 0 100%100%11-Aug-20 A 12-Aug-20 A
NMS R-1070 Relay Work Complete 0 0 100%100%12-Aug-20 A
Transmission WorkTransmission Work 28 0 100%06-Jul-20 A 12-Aug-20 A
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Electrical Work Complete A-968
Protec1on Se5ngs Deployed (Nine Mile A-968)
Relay Work Complete
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
Remaining Level of Effort
Actual Level of Effort
Remaining Work
Actual Work
Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 13 of 30
IFG_PR_073 Attachment D Page 13 of 30
Acvity ID Acvity Name Orig
Dur
Rem
Dur
Calc %
Comp
Actual %
Comp
Start Finish
NMS T-1000 Remove Nine Mile Conductor 1 0 100%100%06-Jul-20 A 06-Jul-20 A
NMS T-1010 Construct Nine Mile 115kV Trans 5 0 100%100%21-Jul-20 A 27-Jul-20 A
NMS T-1020 Northwest Span to Deadend 1 0 100%100%10-Aug-20 A 10-Aug-20 A
NMS T-1030 Nine Mile Span to Deadend 1 0 100%100%10-Aug-20 A 10-Aug-20 A
NMS T-1040 Pull Sta1c Wire from 115kV DE's to Nine Nile and Northwest
Trans Poles
2 0 100%100%11-Aug-20 A 12-Aug-20 A
CommissioningCommissioning 6 0 100%06-Aug-20 A 13-Aug-20 A
NMS C-1000 PT/CT Tes1ng 3 0 100%100%06-Aug-20 A 10-Aug-20 A
NMS C-1010 End to End Tes1ng 3 0 100%100%11-Aug-20 A 13-Aug-20 A
NMS C-1020 Commissioning Complete 0 0 100%100%13-Aug-20 A
Remote End WorkRemote End Work 21 0 100%16-Jul-20 A 13-Aug-20 A
Electrical WorkElectrical Work 1 0 100%16-Jul-20 A 16-Jul-20 A
NMS REW-1020 Electrical Work at Remote End Nine Mile A-968 1 0 100%100%16-Jul-20 A 16-Jul-20 A
Relay Tech WorkRelay Tech Work 17 0 100%20-Jul-20 A 11-Aug-20 A
NMS REW-1000 Protec1on Se5ngs for Remote End Nine Mile A-968 1 0 100%100%20-Jul-20 A 20-Jul-20 A
NMS REW-1010 Points List for Remote End Nine Mile A-968 1 0 100%100%21-Jul-20 A 21-Jul-20 A
NMS REW-1030 SCADA Programming for Remote End Nine Mile A-968 1 0 100%100%03-Aug-20 A 03-Aug-20 A
NMS REW-1050 Relay Tech Work at Remote End Nine Mile A-968 (Inc SCADA
Checkout)
1 0 100%100%11-Aug-20 A 11-Aug-20 A
Communications WorkCommunications Work 2 0 100%12-Aug-20 A 13-Aug-20 A
NMS REW-1040 Communica1ons Work at Remote End Nine Mile A-968 2 0 100%100%12-Aug-20 A 13-Aug-20 A
CommunicationsCommunications 9 0 100%03-Aug-20 A 13-Aug-20 A
NMS COM-1000 Ruggedcom Configura1on 3 0 100%100%03-Aug-20 A 05-Aug-20 A
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Commissioning Complete
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
Remaining Level of Effort
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Remaining Work
Actual Work
Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 14 of 30
IFG_PR_073 Attachment D Page 14 of 30
Acvity ID Acvity Name Orig
Dur
Rem
Dur
Calc %
Comp
Actual %
Comp
Start Finish
NMS COM-1020 Comm Equipment Installa1on 1 0 100%100%11-Aug-20 A 11-Aug-20 A
NMS COM-1010 Fiber Termina1on Support 2 0 100%100%11-Aug-20 A 12-Aug-20 A
NMS COM-1030 Comms Path Test 1 0 100%100%12-Aug-20 A 12-Aug-20 A
NMS COM-1040 Communica1ons Work Complete Nine Mile A-968 0 0 100%100%13-Aug-20 A
Build Coulee (R-634) and Bell and (R-636)Build Coulee (R-634) and Bell and (R-636)229 0 100%22-Oct-20 A 28-May-21 A
OUTAGEOUTAGE 5 0 100%16-Apr-21 A 23-Apr-21 A
COU O-1010 Hold Scheduled Outage -230 kV Coulee and Bell 5 0 100%100%16-Apr-21 A 23-Apr-21 A
Mechanical WorkMechanical Work 133 0 100%02-Nov-20 A 12-May-21 A
COU M-1020 Remove Ftgs & Steel (R-385, Old Auto 2)62 0 100%100%02-Nov-20 A 02-Feb-21 A
COU M-1030 Install Coulee Concrete & Steel (R-634)8 0 100%100%28-Jan-21 A 08-Feb-21 A
COU M-1000 Mechcanical Work Complete - Coulee and Bell (R-634 and
R-636)
0 0 100%100%08-Feb-21 A
COU M-1010 Place Surface Rock - Coulee and Bell 5 0 100%100%06-May-21 A 12-May-21 A
Electrical WorkElectrical Work 131 0 100%22-Oct-20 A 05-May-21 A
COU E-1080 Remove R-385 (Old Auto 2)4 0 100%100%22-Oct-20 A 27-Oct-20 A
COU E-1010 Install Air Switchs - Coulee and Bell (R-634, R-635, R-535, R-636,
R-637 & R-537)
5 0 100%100%08-Mar-21 A 12-Mar-21 A
COU E-1060 Complete Breaker Commissioning Tes1ng - Coulee and Bell
(R-634 and R-636)
3 0 100%100%15-Mar-21 A 17-Mar-21 A
COU E-1020 Install Breakers - Coulee and Bell (R-634 and R-636)4 0 100%100%15-Mar-21 A 18-Mar-21 A
COU E-1030 Install Grounding - Coulee and Bell 5 0 100%100%19-Mar-21 A 25-Mar-21 A
COU E-1090 Install PT's - Coulee and Bell 5 0 100%100%26-Mar-21 A 01-Apr-21 A
COU E-1120 Install CT's - Coulee and Bell 5 0 100%100%02-Apr-21 A 08-Apr-21 A
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Communica1ons Work Complete Nine Mile A-968
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
Remaining Level of Effort
Actual Level of Effort
Remaining Work
Actual Work
Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 15 of 30
IFG_PR_073 Attachment D Page 15 of 30
Acvity ID Acvity Name Orig
Dur
Rem
Dur
Calc %
Comp
Actual %
Comp
Start Finish
COU E-1000 Construct Relay Panels - Coulee & Bell (R-634 and R-636)10 0 100%100%08-Apr-21 A 21-Apr-21 A
COU E-1040 Complete Field Wiring - Coulee and Bell (R-634 and R-636)9 0 100%100%09-Apr-21 A 21-Apr-21 A
COU E-1100 Install Wiring MTC, AC, DC, Comms and Other Devices - Coulee
and Bell
5 0 100%100%22-Apr-21 A 28-Apr-21 A
COU E-1050 Install Bell Gas Breakers - Coulee and Bell 1 0 100%100%29-Apr-21 A 29-Apr-21 A
COU E-1110 Install Exterior Site Ligh1ng - - Coulee and Bell 4 0 100%100%30-Apr-21 A 05-May-21 A
COU E-1070 Electrical Work Complete - Coulee and Bell (R-634 and R-636)0 0 100%100%05-May-21 A
Relay Tech WorkRelay Tech Work 172 0 100%15-Jan-21 A 28-May-21 A
COU R-1000 Prepare Coulee and Bell Protec1on Se5ngs (R-634 and R-636)40 0 100%100%15-Jan-21 A 12-Mar-21 A
COU R-1010 Generate Points List - Coulee and Bell (R-634 and R-636)5 0 100%100%08-Feb-21 A 12-Feb-21 A
COU R-1020 Prepare SCADA Programming - Coulee and Bell (R-634 and
R-636 Includes AGC Modeling)
25 0 100%100%01-Mar-21 A 31-Mar-21 A
COU R-1005 Protec1on Se5ngs Deployed - Coulee and Bell (R-634 and
R-636)
0 0 100%100%12-Mar-21 A
COU R-1090 Complete Line Se5ngs (Bell & Coulee) - Deployed 9 0 100%100%15-Mar-21 A 25-Mar-21 A
COU R-1015 Complete Yellow Lining - Coulee and Bell 18 0 100%100%15-Mar-21 A 07-Apr-21 A
COU R1090 Develop (End to End)Tes1ng and Commissioning Plan - Coulee
and Bell
20 0 100%100%15-Mar-21 A 09-Apr-21 A
COU R-1100 Complete Bus Se5ngs (87BN1 & 87BN2) - Deployed 9 0 100%100%26-Mar-21 A 07-Apr-21 A
COU R-1050 Checkout Relay & SCADA - Coulee and Bell 2 0 100%100%22-Apr-21 A 23-Apr-21 A
COU R-1030 Program Relays - Coulee and Bell (R-634 and R-636)5 0 100%100%22-Apr-21 A 28-Apr-21 A
COU R-1070 Test Interchange Meter Common Meter - Coulee and Bell
(Coordinate w BPA)
96 0 100%100%27-Apr-21 A 28-May-21 A
COU R-1040 Checkout Relay Panels - Coulee and Bell (R-634 and R-636)5 0 100%100%29-Apr-21 A 05-May-21 A
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Electrical Work Complete - Coulee and Bell (R-634 and R-636)
Protec1on Se5ngs Deployed - Coulee and Bell (R-634 and R-636)
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
Remaining Level of Effort
Actual Level of Effort
Remaining Work
Actual Work
Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 16 of 30
IFG_PR_073 Attachment D Page 16 of 30
Acvity ID Acvity Name Orig
Dur
Rem
Dur
Calc %
Comp
Actual %
Comp
Start Finish
COU R-1060 Complete PT/CT Tes1ng - Coulee and Bell 5 0 100%100%30-Apr-21 A 06-May-21 A
COU R-1080 Relay Work Complete - Coulee and Bell 0 0 100%100%06-May-21 A
Transmission WorkTransmission Work 24 0 100%12-Apr-21 A 13-May-21 A
COU T-1020 Set Trans Pole & String Wire Outside Sub - Coulee and Bell
****(During 230kV Bus Outage)****
2 0 100%100%12-Apr-21 A 13-Apr-21 A
COU T-1000 Prepare 230kV Line - Coulee - Coulee and Bell 5 0 100%100%20-Apr-21 A 26-Apr-21 A
COU T-1010 Complete Transmission Work - Coulee and Bell 1 0 100%100%13-May-21 A 13-May-21 A
CommissioningCommissioning 10 0 100%13-May-21 A 26-May-21 A
COU C-1000 Complete PT/CT Tes1ng, End to End Tes1ng and Interchange
Meter Commissioning - Coulee and Bell
9 0 100%100%13-May-21 A 25-May-21 A
COU C-1030 Commissioning Complete - Coulee and Bell 0 0 100%100%26-May-21 A
Remote End WorkRemote End Work 34 0 100%09-Apr-21 A 26-May-21 A
Relay Tech WorkRelay Tech Work 34 0 100%09-Apr-21 A 26-May-21 A
COU REW-1000 Review Protec1on Se5ngs for Remote End Coulee and Bell
(Coordinate w BPA)
5 0 100%100%09-Apr-21 A 15-Apr-21 A
COU REW-1030 Protec1on Se5ngs Deployed - Remote End Coulee and Bell 0 0 100%100%15-Apr-21 A
&
COU REW-1020 Complete Relay Tech Work at Remote End Coulee and Bell
(Coordinate w BPA)
1 0 100%100%26-May-21 A 26-May-21 A
Communications WorkCommunications Work 2 0 100%27-Apr-21 A 28-Apr-21 A
COU REW-1010 Complete Communica1ons Work at Remote End Coulee and Bell
(Coordinate w BPA)
2 0 100%100%27-Apr-21 A 28-Apr-21 A
CommunicationsCommunications 31 0 100%15-Mar-21 A 26-Apr-21 A
COU COM-1000 Configure Ruggedcom - Coulee and Bell 2 0 100%100%15-Mar-21 A 16-Mar-21 A
COU COM-1020 Install Comms Equipment and Support Fiber Termina1ons -
Coulee and Bell
2 0 100%100%22-Apr-21 A 23-Apr-21 A
COU COM-1030 Complete Comms Path Test - Coulee and Bell (Coordinate w BPA)1 0 100%100%26-Apr-21 A 26-Apr-21 A
COU COM-1040 Communica1ons Work Complete Coulee and Bell (R-634 and
R-636)
0 0 100%100%26-Apr-21 A
Build Northwest A-970Build Northwest A-970 768 129 83.2%28-Feb-19 A 11-Mar-22
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Relay Work Complete - Coulee and Bell
Commissioning Complete - Coulee and Bell
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
Remaining Level of Effort
Actual Level of Effort
Remaining Work
Actual Work
Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 17 of 30
IFG_PR_073 Attachment D Page 17 of 30
Acvity ID Acvity Name Orig
Dur
Rem
Dur
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Actual %
Comp
Start Finish
OUTAGESOUTAGES 10 10 0%28-Feb-22 11-Mar-22
NW O-1010 Hold Planned Outage - 115kV SE Bus Outage 1 1 0%0%28-Feb-22 28-Feb-22
NW O-1000 Hold Planned Outage - Northwest 115kV Outage 10 10 0%0%28-Feb-22*11-Mar-22
Mechanical WorkMechanical Work 763 5 99.34%28-Feb-19 A 04-Mar-22
NW M-1000 Mechanical Work Complete A-970 0 0 100%100%28-Feb-19 A
NW M-1010 Place Surface Rock - Northwest 5 5 0%0%28-Feb-22 04-Mar-22
Electrical WorkElectrical Work 80 80 0%26-Oct-21 25-Feb-22
NW E-1000 Construct Relay Panel - Northwest A-970 10 10 0%0%26-Oct-21 08-Nov-21
NW E-1020 Install Air Switch - Northwest A-970 10 10 0%0%01-Nov-21*12-Nov-21
NW E-1030 Install Breaker - Northwest A-970 10 10 0%0%15-Nov-21 30-Nov-21
NW E-1040 Install Air Switches A-1070 & Bus - Northwest 10 10 0%0%15-Nov-21 30-Nov-21
NW E-1050 Complete Grounding - Northwest A-970 10 10 0%0%01-Dec-21 14-Dec-21
NW E-1090 Install PT's - Northwest A-970 10 10 0%0%15-Dec-21 29-Dec-21
NW E-1060 Complete Field Wiring - Northwest A-970 20 20 0%0%30-Dec-21 27-Jan-22
NW E-1100 Complete Wiring MTC, AC, DC, Comms and Other Devices 10 10 0%0%28-Jan-22 17-Feb-22
NW E-1070 Install Gas Breaker - Northwest A-970 1 1 0%0%18-Feb-22 18-Feb-22
NW E-1080 Test Breaker Commissioning - Northwest A-970 1 1 0%0%21-Feb-22 21-Feb-22
NW E-1110 Install Exterior Site Ligh1ng - Northwest A-970 5 5 0%0%21-Feb-22 25-Feb-22
NW E-1010 Electrical Work Complete - Northwest A-970 0 0 0%0%25-Feb-22
Relay Tech WorkRelay Tech Work 117 117 0%07-Sep-21 01-Mar-22
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Mechanical Work Complete A-970
Electrical Work Complete - Northwest A-970
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
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Remaining Work
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Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 18 of 30
IFG_PR_073 Attachment D Page 18 of 30
Acvity ID Acvity Name Orig
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Start Finish
NW R-1000 Prepare Protec1on Se5ngs - Northwest A-970 5 5 0%0%07-Sep-21*13-Sep-21
NW R-1080 Protec1on Se5ngs Deployed - Northwest A-970 0 0 0%0%13-Sep-21
NW R-1010 Generate Points List - Northwest A-970 5 5 0%0%14-Sep-21 20-Sep-21
NW R-1090 Complete Yellow Lining - Northwest 10 10 0%0%14-Sep-21 27-Sep-21
NW R-1020 Prepare SCADA Programming - Northwest A-970 25 25 0%0%21-Sep-21 25-Oct-21
NW R-1030 Program Relays - Northwest A-970 5 5 0%0%17-Nov-21 23-Nov-21
NW R-1040 Checkout Relay Panel - Northwest A-970 5 5 0%0%24-Nov-21 02-Dec-21
NW R-1050 Checkout Relay & SCADA - Northwest A-970 2 2 0%0%28-Jan-22 31-Jan-22
NW R-1060 Complete PT/CT Tes1ng - Northwest A-970 5 5 0%0%21-Feb-22 25-Feb-22
NW R1080 Develop Tes1ng and Commissioning Plan- Northwest A-970 2 2 0%0%28-Feb-22 01-Mar-22
NW R-1070 Relay Work Complete - Northwest A-970 0 0 0%0%01-Mar-22
CommissioningCommissioning 9 9 0%28-Feb-22 10-Mar-22
NW C-1000 Complete PT/CT Tes1ng and End to End Tes1ng - Northwest
A-970
8 8 0%0%28-Feb-22 09-Mar-22
NW C-1020 Commissioning Complete - Northwest A-970 0 0 0%0%10-Mar-22
Remote End WorkRemote End Work 49 49 0%30-Dec-21 10-Mar-22
Electrical WorkElectrical Work 1 1 0%30-Dec-21 30-Dec-21
NW REW-1030 Complete Electrical Work - Northwest A-970 1 1 0%0%30-Dec-21 30-Dec-21
Relay Tech WorkRelay Tech Work 44 44 0%03-Jan-22 10-Mar-22
NW REW-1010 Prepare Protec1on Se5ngs for Remote End - Northwest A-970 5 5 0%0%03-Jan-22 07-Jan-22
NW REW-1060 Protec1on Se5ngs Deployed - Remote End - Northwest A-970 0 0 0%0%07-Jan-22
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Protec1on Se5ngs Deployed - Northwest A-970
Relay Work Complete - Northwest A-970
Commissioning Complete - Northwest A-970
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
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Actual Level of Effort
Remaining Work
Actual Work
Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 19 of 30
IFG_PR_073 Attachment D Page 19 of 30
Acvity ID Acvity Name Orig
Dur
Rem
Dur
Calc %
Comp
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Comp
Start Finish
NW REW-1020 Prepare Points List for Remote End - Northwest A-970 2 2 0%0%10-Jan-22 11-Jan-22
NW REW-1040 Complete SCADA Programming for Remote End NW A-970 2 2 0%0%12-Jan-22 13-Jan-22
NW REW-1050 Relay Tech Work at Remote End NW A-970 (Inc SCADA
Checkout) - Unassigned
1 1 0%0%10-Mar-22 10-Mar-22
Communications WorkCommunications Work 1 1 0%31-Jan-22 31-Jan-22
NW REW-1000 Communica1ons Work Complete at Remote End NW A-970 1 1 0%0%31-Jan-22 31-Jan-22
CommunicationsCommunications 45 45 0%23-Nov-21 31-Jan-22
NW COM-1010 Ruggedcom Configura1on 2 2 0%0%23-Nov-21 24-Nov-21
NW COM-1030 Fiber Termina1on Support 1 1 0%0%28-Jan-22 28-Jan-22
NW COM-1040 Comm Equipment Install 1 1 0%0%28-Jan-22 28-Jan-22
NW COM-1020 Comms Path Test 1 1 0%0%31-Jan-22 31-Jan-22
NW COM-1000 Communica1ons Work Complete NW A-970 0 0 0%0%31-Jan-22
Install South Bus 230kV RelayingInstall South Bus 230kV Relaying 41 41 0%24-Jan-22 21-Mar-22
OUTAGEOUTAGE 5 5 0%11-Mar-22 17-Mar-22
SB O-1050 Separate 230kV Main Bus (Separate Busses) No Outage Needed 5 5 0%0%11-Mar-22*17-Mar-22
Electrical WorkElectrical Work 30 30 0%24-Jan-22 11-Mar-22
SB E-1000 Construct Relay Panel - South Bus 10 10 0%0%24-Jan-22 04-Feb-22
SB E-1040 Remove Pipe Sec1on on 230kV Main and - South Bus 1 1 0%0%11-Mar-22 11-Mar-22
Relay Tech WorkRelay Tech Work 10 10 0%14-Feb-22 25-Feb-22
SB R-1010 Program Relays - South Bus 5 5 0%0%14-Feb-22 18-Feb-22
SB R-1020 Checkout Relay Panel - South Bus 5 5 0%0%21-Feb-22 25-Feb-22
SB R-1030 Relay Work Complete - South Bus 0 0 0%0%25-Feb-22
CommissioningCommissioning 7 7 0%11-Mar-22 21-Mar-22
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Communica1ons Work Complete NW A-970
Relay Work Complete - South Bus
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
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Remaining Work
Actual Work
Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 20 of 30
IFG_PR_073 Attachment D Page 20 of 30
Acvity ID Acvity Name Orig
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SB C-1060 PT/CT Tes1ng 1 1 0%0%11-Mar-22 11-Mar-22
SB C-1070 Relay & SCADA Checkout 2 2 0%0%14-Mar-22 15-Mar-22
SB C-1080 End to End Tes1ng 3 3 0%0%16-Mar-22 18-Mar-22
SB C-1090 Commissioning Complete South Bus 230kV 1 1 0%0%21-Mar-22 21-Mar-22
CommunicationsCommunications 3 3 0%16-Mar-22 18-Mar-22
SB COM-3150 Communica1ons Work Complete S Bus 230kV Relaying 3 3 0%0%16-Mar-22 18-Mar-22
CloseoutCloseout 0 0 0%23-May-22 23-May-22
WES02-2910 Westside Substa1on Phase 2 Comple1on 0 0 0%0%23-May-22*
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Westside Substa1on Phase 2 Comple1on
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
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Remaining Work
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Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 21 of 30
IFG_PR_073 Attachment D Page 21 of 30
Acvity ID Acvity Name Orig
Dur
Rem
Dur
Calc %
Comp
Actual %
Comp
Start Finish
Westside Substation Re-Build - Phase 3 (67) - Under RevisionWestside Substation Re-Build - Phase 3 (67) - Under Revision1032 801 22.38%02-Oct-20 A 30-Oct-24
Planning & Design PhasePlanning & Design Phase 449 218 51.45%02-Oct-20 A 13-Jul-22
Support During Planning and DesignSupport During Planning and Design 1 0 100%02-Oct-20 A 02-Oct-20 A
WES03-2000 Hold Project Kick-off Mee1ng 1 0 100%100%02-Oct-20 A 02-Oct-20 A
ContractingContracting 60 0 100%01-Mar-21 A 07-Jun-21 A
Substation DesignSubstation Design 60 0 100%01-Mar-21 A 07-Jun-21 A
WES03-2060 Prepare RFP for Substa1on Design 5 0 100%100%01-Mar-21 A 05-Mar-21 A
WES03-2070 Substa1on Design - RFP Process 50 0 100%100%08-Mar-21 A 21-May-21 A
WES03-2080 Substa1on Design - Contract Execu1on 15 0 100%100%03-May-21 A 07-Jun-21 A
WES03-2090 Contract Execu1on Complete 0 0 100%100%07-Jun-21 A
Phase 3.1 - Demo & 230kV Double Breaker Double BusPhase 3.1 - Demo & 230kV Double Breaker Double Bus 437 207 52.63%05-Oct-20 A 27-Jun-22
3.1 - Design3.1 - Design 111 68 38.74%07-Jun-21 A 08-Dec-21
3.1 - Physical Design3.1 - Physical Design 45 23 48.89%07-Jun-21 A 04-Oct-21
WES03-2120 Prepare 230 Kv 90% Physical Design - WES3-Phase 1 14 16 0%0%07-Jun-21 A 23-Sep-21
WES03-2130 Review and Transmit 230Kv Physical Design IFC - WES3-Phase 1 7 7 0%0%24-Sep-21 04-Oct-21
3.1 - Electrical Design3.1 - Electrical Design 111 68 38.74%07-Jun-21 A 08-Dec-21
WES03-2140 Prepare 230KV 60% Electrical Design and Submit to Avista -
Phase 1
55 0 100%100%07-Jun-21 A 21-Jul-21 A
WES03-2145 DraNing Support for 60% Design - Phase 1 55 0 100%100%07-Jun-21 A 30-Jul-21 A
WES03-2150 Review 230KV 60% Design - Phase 1 5 0 100%100%21-Jul-21 A 30-Jul-21 A
WES03-2160 Prepare 230KV 90% Electrical Design and Submit to Avista -
Phase 1
39 39 0%0%01-Sep-21 26-Oct-21
WES03-2165 DraNing Support for 230KV 90% Design - Phase 1 10 10 0%0%01-Sep-21 15-Sep-21
WES03-2170 Review 230KV 90% Design and Return to HDR - Phase 1 5 5 0%0%27-Oct-21 02-Nov-21
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Contract Execu1on Complete
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
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Remaining Work
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Planned Outage Bar
Scheduled Outage Bar
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Cri1cal Remaining Work
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Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 22 of 30
IFG_PR_073 Attachment D Page 22 of 30
Acvity ID Acvity Name Orig
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Comp
Start Finish
WES03-2175 Prepare 230KV IFC Deliverable and Submit to Avista - Phase 1 14 14 0%0%03-Nov-21 22-Nov-21
WES03-2205 DraNing Support for 230KV IFC - Phase 1 10 10 0%0%05-Nov-21 18-Nov-21
WES03-2210 Review 230KV IFC - Phase 1 10 10 0%0%23-Nov-21 08-Dec-21
3.1 - Relay and Protection3.1 - Relay and Protection 113 0 100%05-Oct-20 A 19-Mar-21 A
WES03-2250 Prepare Phase 3.1 Protec1on Design 113 0 100%100%05-Oct-20 A 19-Mar-21 A
3.1 - Enterprise Technology Design3.1 - Enterprise Technology Design 40 40 0%02-May-22 27-Jun-22
WES03-2270 Prepare ET Design (Wreck out work only) - Phase 1 40 40 0%0%02-May-22*27-Jun-22
WES03-2280 ET Design Complete - Phase 1 0 0 0%0%27-Jun-22
Phase 3.2 - 115kV SE Bus Double Breaker Double BusPhase 3.2 - 115kV SE Bus Double Breaker Double Bus 448 195 56.47%05-Oct-20 A 13-Jul-22
3.2 - Design3.2 - Design 195 195 0%05-Oct-21 13-Jul-22
3.2 - Physical Design3.2 - Physical Design 45 45 0%05-Oct-21 08-Dec-21
WES03-2420 Prepare 115KV 90% Physical Design - WES3 Phase 2 11 11 0%0%05-Oct-21 19-Oct-21
WES03-2430 Review and Transmit 115KV 90% Physical Design - IFC - WES3 -
Phase 2
14 14 0%0%17-Nov-21 08-Dec-21
3.2 - Electrical Design3.2 - Electrical Design 150 150 0%09-Dec-21 13-Jul-22
WES03-2180 Prepare 115KV 60% Electrical Design and Submit to Avista -
Phase 2
42 42 0%0%09-Dec-21 09-Feb-22
WES03-4100 DraNing Support for 115KV 60% Design - Phase 2 30 30 0%0%23-Dec-21 07-Feb-22
WES03-2190 Review 115KV 60% Design - Phase 2 9 9 0%0%10-Feb-22 22-Feb-22
WES03-2200 Prepare 115KV 90% Electrical Design and Submit to Aviata -
Phase 2
45 45 0%0%23-Feb-22 26-Apr-22
WES03-2215 DraNing Support for 115KV 90% Design - Phase 2 33 33 0%0%09-Mar-22 22-Apr-22
WES03-2220 Review 115KV 90% Design - Phase 2 10 10 0%0%27-Apr-22 10-May-22
WES03-2460 Issue for Construc1on 115KV (IFC) Drawing Package Submi%ed -
Phase 2
8 8 0%0%11-May-22 20-May-22
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
ET Design Complete - Phase 1
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
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Remaining Work
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Planned Outage Bar
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Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 23 of 30
IFG_PR_073 Attachment D Page 23 of 30
Acvity ID Acvity Name Orig
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Comp
Start Finish
WES03-2225 Prepare 115KV IFC Deliverable and Submit to Aviata - Phase 2 30 30 0%0%11-May-22 22-Jun-22
WES03-2230 DraNing Support for 115KV IFC - Phase 2 23 23 0%0%18-May-22 20-Jun-22
WES03-2235 Review 115KV IFC - Phase 2 14 14 0%0%23-Jun-22 13-Jul-22
3.2 - Relay and Protection3.2 - Relay and Protection 138 0 100%05-Oct-20 A 26-Mar-21 A
WES03-2580 Prepare Phase 3.2 Protec1on Design 138 0 100%100%05-Oct-20 A 26-Mar-21 A
Phase 3.3 - 115kV SW Bus Double Breaker Double BusPhase 3.3 - 115kV SW Bus Double Breaker Double Bus 138 0 100%05-Oct-20 A 26-Mar-21 A
3.3 - Relay and Protection3.3 - Relay and Protection 138 0 100%05-Oct-20 A 26-Mar-21 A
WES03-2750 Prepare Phase 3.3 Protec1on Design 138 0 100%100%05-Oct-20 A 26-Mar-21 A
Execution PhaseExecution Phase 573 573 0%19-Oct-21 26-Jan-24
Phase 3.1 - Demo & 230kV Double Breaker Double BusPhase 3.1 - Demo & 230kV Double Breaker Double Bus 197 197 0%19-Oct-21 29-Jul-22
Support During ConstructionSupport During Construction 140 140 0%09-Dec-21 28-Jun-22
WES03-3010 Support During Construc1on - Phase 1 - HDR 140 140 0%0%09-Dec-21 28-Jun-22
3.1 - OUTAGES3.1 - OUTAGES 59 59 0%28-Feb-22 19-May-22
WES03-3000 Hold Phase 1 Planned Outage 230/115kV Transformer #1 4 4 0%0%28-Feb-22*03-Mar-22
WES03-3002 14 14 0%0%14-Mar-22*31-Mar-22
WES03-3004 Hold Phase 1 Planned Outage R-636 (Bell posi1on)14 14 0%0%11-Apr-22*28-Apr-22
WES03-3006 Hold Phase 1 Planned Outage A-970 115 KV Northwest posi1on
& Southeast bus
9 9 0%0%09-May-22*19-May-22
3.1 - Mechanical Work3.1 - Mechanical Work 60 60 0%19-Oct-21 14-Jan-22
WES03-M-3010 Complete Phase 1 Demo Work - Unassigned 60 60 0%0%19-Oct-21 14-Jan-22
WES03-M-3015 Install Phase 1 Concrete Foo1ngs - Unassigned 40 40 0%0%02-Nov-21 31-Dec-21
WES03-M-3020 Install Phase 1 Steel - Unassigned 40 40 0%0%09-Nov-21 07-Jan-22
WES03-M-3025 Phase 1 Mechcanical Work Complete 0 0 0%0%14-Jan-22
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Phase 1 Mechcanical Work Complete
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
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Remaining Work
Actual Work
Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 24 of 30
IFG_PR_073 Attachment D Page 24 of 30
Acvity ID Acvity Name Orig
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Comp
Start Finish
3.1 - Electrical Work3.1 - Electrical Work 141 141 0%09-Dec-21 27-Jun-22
WES03-E-3055 Construct Phase 1 Relay Panel 20 20 0%0%09-Dec-21 07-Jan-22
WES03-E-3050 Complete Phase 1 Electrical Demo Work 60 60 0%0%09-Dec-21 04-Mar-22
WES03-E-3060 Install Phase 1 Air Switch 11 11 0%0%07-Mar-22 21-Mar-22
WES03-E-3065 Install Phase 1 Breaker 10 10 0%0%22-Mar-22 04-Apr-22
WES03-E-3070 Complete Phase 1 Grounding 20 20 0%0%05-Apr-22 02-May-22
WES03-E-3075 Complete Phase 1 Field Wiring 20 20 0%0%03-May-22 30-May-22
WES03-E-3080 Install Phase 1 Gas Breaker 10 10 0%0%31-May-22 13-Jun-22
WES03-E-3085 Complete Phase 1 Breaker Commissioning Tes1ng 10 10 0%0%14-Jun-22 27-Jun-22
WES03-E-3090 Phase 1 Electrical Work Complete 0 0 0%0%27-Jun-22
3.1 - Relay Tech Work3.1 - Relay Tech Work 143 143 0%09-Dec-21 29-Jun-22
WES03-R-3110 Complete Phase 1 Relay Demo Work 80 80 0%0%09-Dec-21 01-Apr-22
WES03-R-3130 Prepare Phase 1 Protec1on Se5ngs 5 5 0%0%09-Dec-21 15-Dec-21
WES03-R-3135 Generate Phase 1 Points List 5 5 0%0%16-Dec-21 22-Dec-21
WES03-R-3115 Prepare Program Relays - Phase 1 10 10 0%0%04-Apr-22 15-Apr-22
WES03-R-3120 Checkout Phase 1 Relay Panel 5 5 0%0%18-Apr-22 22-Apr-22
WES03-R-3125 Test Phase 1 Interchange Meter Common Meter 1 1 0%0%25-Apr-22 25-Apr-22
WES03-R-3140 Program Phase 1 SCADA (Inc AGC Modeling)45 45 0%0%26-Apr-22 27-Jun-22
WES03-R-3145 Checkout Phase 1 Relay & SCADA 2 2 0%0%28-Jun-22 29-Jun-22
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Phase 1 Electrical Work Complete
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
Remaining Level of Effort
Actual Level of Effort
Remaining Work
Actual Work
Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 25 of 30
IFG_PR_073 Attachment D Page 25 of 30
Acvity ID Acvity Name Orig
Dur
Rem
Dur
Calc %
Comp
Actual %
Comp
Start Finish
WES03-R-3150 Ini1al Phase 1 PT/CT Tes1ng 5 5 0%0%14-Jun-22 20-Jun-22
WES03-R-3155 Phase 1 Relay Work Complete 0 0 0%0%29-Jun-22
3.1 - Communications Work3.1 - Communications Work 35 35 0%31-May-22 18-Jul-22
WES03-CM-3170 Complete Phase 1 Ruggedcom Configura1on 1 1 0%0%28-Jun-22 28-Jun-22
WES03-CM-3180 Support Phase 1 Fiber Termina1on 10 10 0%0%31-May-22 13-Jun-22
WES03-CM-3175 Install Phase 1 Comm Equipment 10 10 0%0%21-Jun-22 04-Jul-22
WES03-CM-3185 Complete Phase 1 Comms Path Test 10 10 0%0%05-Jul-22 18-Jul-22
WES03-CM-3190 Phase 1 Communica1ons Work Complete 0 0 0%0%18-Jul-22
3.1 - Commissioning3.1 - Commissioning 9 9 0%19-Jul-22 29-Jul-22
WES03-C-3200 Complete Phase 1 PT/CT Tes1ng 5 5 0%0%19-Jul-22 25-Jul-22
WES03-C-3205 Complete Phase 1 End to End Tes1ng 3 3 0%0%26-Jul-22 28-Jul-22
WES03-C-3210 Complete Phase 1 Interchange Meter Commissioning 1 1 0%0%29-Jul-22 29-Jul-22
WES03-C-3215 Phase 1 Commissioning Complete 0 0 0%0%29-Jul-22
3.1 - Phase 1 Work Complete3.1 - Phase 1 Work Complete 0 0 0%29-Jul-22 29-Jul-22
WES03-3250 0 0 0%0%29-Jul-22*
3.2 - 115kV SE Bus Double Breaker Double Bus3.2 - 115kV SE Bus Double Breaker Double Bus 538 538 0%09-Dec-21 26-Jan-24
Support During ConstructionSupport During Construction 388 388 0%14-Jul-22 26-Jan-24
WES03-3020 Support During Construc1on - Phase 2 - HDR 388 388 0%0%14-Jul-22 26-Jan-24
3.2 - OUTAGES3.2 - OUTAGES 75 75 0%08-Sep-22 21-Dec-22
WES03-3300 Hold Phase 2 Planned Outage - 115kV SE Bus Outage 1 1 0%0%08-Sep-22 08-Sep-22
WES03-3305 Hold Phase 2 Planned Outage - 115kV Outage 30 30 0%0%10-Nov-22*21-Dec-22
3.2 - Mechanical Work3.2 - Mechanical Work 35 35 0%09-Dec-21 28-Jan-22
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Phase 1 Relay Work Complete
Phase 1 Commissioning Complete
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
Remaining Level of Effort
Actual Level of Effort
Remaining Work
Actual Work
Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 26 of 30
IFG_PR_073 Attachment D Page 26 of 30
Acvity ID Acvity Name Orig
Dur
Rem
Dur
Calc %
Comp
Actual %
Comp
Start Finish
WES03-M-3310 Install Phase 2 Concrete Foo1ngs - Unassigned 30 30 0%0%09-Dec-21 21-Jan-22
WES03-M-3315 Install Phase 2 Steel - Unassigned 5 5 0%0%24-Jan-22 28-Jan-22
WES03-M-3320 Phase 2 Mechanical Work Complete 0 0 0%0%28-Jan-22
3.2 - Electrical Work3.2 - Electrical Work 121 121 0%14-Jul-22 29-Dec-22
WES03-E-3360 Construct Relay Panel - Phase 2 20 20 0%0%14-Jul-22 10-Aug-22
WES03-E-3350 Complete Electrical Demo Work - Phse 2 28 28 0%0%01-Aug-22 07-Sep-22
WES03-E-3355 Install Air Switch - Phase 2 10 10 0%0%09-Sep-22 22-Sep-22
WES03-E-3365 Install Breaker - Phase 2 10 10 0%0%23-Sep-22 06-Oct-22
WES03-E-3370 Complete Grounding - Phase 2 20 20 0%0%07-Oct-22 03-Nov-22
WES03-E-3375 Install Field Wiring - Phase 2 20 20 0%0%04-Nov-22 01-Dec-22
WES03-E-3380 Install Gas Breaker - Phase 2 10 10 0%0%02-Dec-22 15-Dec-22
WES03-E-3385 Conduct Breaker Commissioning Tes1ng - Phase 2 10 10 0%0%16-Dec-22 29-Dec-22
3.2 - Relay Tech Work3.2 - Relay Tech Work 96 96 0%11-Aug-22 22-Dec-22
WES03-R-3425 Prepare Relay Program - Phase 2 10 10 0%0%11-Aug-22 24-Aug-22
WES03-R-3430 Checkout Relay Panel(s) - Phase 2 5 5 0%0%25-Aug-22 31-Aug-22
WES03-R-3410 Prepare Protec1on Se5ngs - Phase 2 10 10 0%0%25-Aug-22 07-Sep-22
WES03-R-3415 Generate Points List - Phase 2 10 10 0%0%08-Sep-22 21-Sep-22
WES03-R-3420 Program SCADA - Phase 2 45 45 0%0%22-Sep-22 23-Nov-22
WES03-R-3435 Checkout Relay & SCADA - Phase 2 2 2 0%0%02-Dec-22 05-Dec-22
WES03-R-3440 Ini1al PT/CT Tes1ng - Phase 2 5 5 0%0%16-Dec-22 22-Dec-22
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Phase 2 Mechanical Work Complete
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
Remaining Level of Effort
Actual Level of Effort
Remaining Work
Actual Work
Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 27 of 30
IFG_PR_073 Attachment D Page 27 of 30
Acvity ID Acvity Name Orig
Dur
Rem
Dur
Calc %
Comp
Actual %
Comp
Start Finish
WES03-R-3445 Relay Work Complete - Phase 2 0 0 0%0%22-Dec-22
3.2 - Communications Work3.2 - Communications Work 68 68 0%01-Sep-22 05-Dec-22
WES03-CM-3470 Complete Phase 2 Ruggedcom Configura1on 1 1 0%0%01-Sep-22 01-Sep-22
WES03-CM-3480 Support Phase 2 Fiber Termina1on 1 1 0%0%02-Dec-22 02-Dec-22
WES03-CM-3475 Install Phase 2 Comm Equipment 1 1 0%0%02-Dec-22 02-Dec-22
WES03-CM-3485 Complete Phase 2 Comms Path Test 1 1 0%0%05-Dec-22 05-Dec-22
WES03-CM-3490 Phase 2 Communica1ons Work Complete 0 0 0%0%05-Dec-22
3.2 - Commissioning3.2 - Commissioning 8 8 0%30-Dec-22 10-Jan-23
WES03-C-3500 Complete Phase 2 PT/CT Tes1ng 5 5 0%0%30-Dec-22 05-Jan-23
WES03-C-3505 Complete Phase 2 End to End Tes1ng 3 3 0%0%06-Jan-23 10-Jan-23
WES03-C-3510 Phase 2 Commissioning Complete 0 0 0%0%10-Jan-23
3.2 - Phase 2 Work Complete3.2 - Phase 2 Work Complete 0 0 0%10-Jan-23 10-Jan-23
WES03-3550 0 0 0%0%10-Jan-23
3.3 - 115kV SW Bus Double Breaker Double Bus3.3 - 115kV SW Bus Double Breaker Double Bus 328 328 0%23-May-22 23-Aug-23
3.3 - OUTAGES3.3 - OUTAGES 5 5 0%14-Aug-23 18-Aug-23
WES03-3600 Hold Phase 3 Planned Outage - 115kV SW Bus Outage 5 5 0%0%14-Aug-23 18-Aug-23
3.3 - Electrical Work3.3 - Electrical Work 105 105 0%11-Jan-23 06-Jun-23
WES03-E-3650 Install Phase 3 Air Switch 20 20 0%0%11-Jan-23 07-Feb-23
WES03-E-3660 Install Phase 3 Breaker 20 20 0%0%08-Feb-23 07-Mar-23
WES03-E-3655 Install Phase 3 Air Switches Bus 20 20 0%0%08-Feb-23 07-Mar-23
WES03-E-3670 Complete Phase 3 Grounding 20 20 0%0%08-Mar-23 04-Apr-23
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Relay Work Complete - Phase 2
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
Remaining Level of Effort
Actual Level of Effort
Remaining Work
Actual Work
Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 28 of 30
IFG_PR_073 Attachment D Page 28 of 30
Acvity ID Acvity Name Orig
Dur
Rem
Dur
Calc %
Comp
Actual %
Comp
Start Finish
WES03-E-3675 Install Phase 3 Field Wiring 30 30 0%0%05-Apr-23 16-May-23
WES03-E-3680 Install Phase 3 Gas Breaker(s)5 5 0%0%17-May-23 23-May-23
WES03-E-3685 Complete Phase 3 Breaker Commissioning Tes1ng 10 10 0%0%24-May-23 06-Jun-23
WES03-E-3690 Phase 3 Electrical Work Complete 0 0 0%0%06-Jun-23
3.3 - Relay Tech Work3.3 - Relay Tech Work 320 320 0%23-May-22 11-Aug-23
WES03-R-3710 Complete Phase 3 Protec1on Se5ngs (NW A-970)10 10 0%0%24-Nov-22 07-Dec-22
WES03-R-3715 Prepare Phase 3 Points List (NW A-970)10 10 0%0%08-Dec-22 21-Dec-22
WES03-R-3720 SCADA Programming Northwest A-970 45 45 0%0%22-Dec-22 22-Feb-23
WES03-R-3730 Checkout Complete Phase 1 Relay Panel(s)10 10 0%0%23-May-22 03-Jun-22
WES03-R-3735 Ini1al Phase 3 PT/CT Tes1ng 5 5 0%0%24-May-23 30-May-23
WES03-R-3740 Checkout Phase 3 Relay & SCADA 2 2 0%0%10-Aug-23 11-Aug-23
WES03-R-3745 Phase 3 Relay Work Complete 0 0 0%0%11-Aug-23
3.3 - Communications Work - NW A-9703.3 - Communications Work - NW A-970 2 2 0%17-May-23 18-May-23
WES03-CM-3775 Support Phase 2 Fiber Termina1on 1 1 0%0%17-May-23 17-May-23
WES03-CM-3770 Install Phase 3 Comm Equipment 1 1 0%0%17-May-23 17-May-23
WES03-CM-3780 Complete Phase 3 Comms Path Test 1 1 0%0%18-May-23 18-May-23
WES03-CM-3785 Complete Phase 3 Ruggedcom Configura1on 1 1 0%0%17-May-23 17-May-23
WES03-CM-3790 Phase 3 NW A-970 Communica1ons Work Complete 0 0 0%0%18-May-23
3.3 - Commissioning3.3 - Commissioning 8 8 0%14-Aug-23 23-Aug-23
WES03-C-3800 Complete Phase 3 PT/CT Tes1ng 5 5 0%0%14-Aug-23 18-Aug-23
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Phase 3 Electrical Work Complete
Phase 3 Relay Work Complete
Phase 3 NW A-970 Communica1ons Work Complete
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
Remaining Level of Effort
Actual Level of Effort
Remaining Work
Actual Work
Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 29 of 30
IFG_PR_073 Attachment D Page 29 of 30
Acvity ID Acvity Name Orig
Dur
Rem
Dur
Calc %
Comp
Actual %
Comp
Start Finish
WES03-C-3805 Complete Phase 3 End to End Tes1ng 3 3 0%0%21-Aug-23 23-Aug-23
WES03-C-3810 Phase 3 Commissioning Complete 0 0 0%0%23-Aug-23
3.3 - Phase 3 Work Complete3.3 - Phase 3 Work Complete 0 0 0%23-Aug-23 23-Aug-23
WES03-3850 0 0 0%0%23-Aug-23
CloseoutCloseout 593 593 0%29-Jun-22 30-Oct-24
WES03-4010 Perform SCADA Demo (see Steps)20 20 0%0%14-Aug-23 11-Sep-23
WES03-4030 Complete Redline Drawings 10 10 0%0%14-Aug-23 25-Aug-23
WES03-4040 Complete As-Built Drawings 40 40 0%0%28-Aug-23 23-Oct-23
WES03-4000 SoN Close Project (Begin six month period)1 1 0%0%01-May-24 01-May-24
WES03-4020 SCADA Closeout Complete 0 0 0%0%11-Sep-23
WES03-4050 Hold Closout Mee1ng (Lessons Learned)1 1 0%0%03-Oct-23 03-Oct-23
WES03-4060 Approval to Close (PG-4)/Hard Close 0 0 0%0%30-Oct-24*
WES03-4090 As Built Drawings - Phase 1 87 87 0%0%29-Jun-22 31-Oct-22
WES03-4110 As Built Drawings - Phase 2 67 67 0%0%29-Jan-24 30-Apr-24
J J J J J J J J J J J
Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
Phase 3 Commissioning Complete
Release Phase 3 to Opera1ons Approved ("In-Service"/TTP Date)
SCADA Closeout Complete
Approval to Close (PG-4)/Hard Close
Project Lead - Zack Curry PL-300 - Zack Curry
TASK filter: All Activities
Remaining Level of Effort
Actual Level of Effort
Remaining Work
Actual Work
Planned Outage Bar
Scheduled Outage Bar
Unassigned
Cri1cal Remaining Work
Milestone
Completed Milestone
Cri1cal Milestone
Baseline Bar
SUBSTATION MASTER SCHEDULE

POTENTIAL NON PUBLIC TRANSMISSION FUNCTION INFORMATION.
DO NOT DISCLOSE TO MARKETING FUNCTION EMPLOYEES OF AVISTA CORPORATION - FERC Standards of Conduct 18 CFR 358
Data Date 31-Aug-21
Print Date 17-May-23
Page 30 of 30
IFG_PR_073 Attachment D Page 30 of 30