EXHIBIT B—PROJECT OPERATION AND RESOURCE UTILIZATION Klamath Hydroelectric Project (FERC Project No. 2082) PacifiCorp Portland, Oregon Version: February 2004 Copyright © 2004 by PacifiCorp Reproduction in whole or in part without the written consent of PacifiCorp is prohibited. CONTENTS Section Page B1.0 INTRODUCTION............................................................................................................. 1-1 B1.1 EXISTING KLAMATH HYDROELECTRIC PROJECT OVERVIEW............... 1-2 B1.2 PROPOSED KLAMATH HYDROELECTRIC PROJECT OVERVIEW............. 1-2 B1.3 USBR KLAMATH IRRIGATION PROJECT ....................................................... 1-2 B2.0 FLOW REGULATION THROUGH EXISTING KLAMATH HYDROELECTRIC PROJECT .................................................................................. 2-1 B2.1 INTRODUCTION................................................................................................... 2-1 B2.2 FLOW REGULATION INTO AND OUT OF THE USBR PROJECT TO THE KLAMATH HYDROELECTRIC PROJECT............................................. 2-6 B2.3 FLOW REGULATION THROUGH THE PROJECT DURING SUMMER AND/OR BELOW AVERAGE WATER YEAR................................................ 2-7 B2.4 FLOW REGULATION THROUGH USBR AND KLAMATH HYDROELECTRIC PROJECTS IN WINTER AND/OR HIGH WATER YEARS ...................................................................................... 2-7 B2.4.1 Project Flood Control............................................................................... 2-8 B2.5 OTHER OUT-OF-BASIN DIVERSIONS.............................................................. 2-8 B2.5.1 Rogue River Basin Irrigation Project....................................................... 2-8 B2.5.2 City of Yreka Municipal Water Supply ................................................... 2-9 B3.0 FLOW REGULATION THROUGH THE PROPOSED KLAMATH HYDROELECTRIC PROJECT .................................................................................. 3-1 B4.0 HYDROLOGY—EXISTING CONDITIONS................................................................ 4-1 B4.1 PROJECT AREA HYDROLOGIC DRAINAGE AREA AND FLOW REGIME.................................................................................................. 4-1 B4.2 EXISTING HYDROLOGY AND FLOW AVAILABILITY................................. 4-2 B4.2.1 Hydrologic Data Sources for the Project Area......................................... 4-2 B4.2.2 Average Daily Flow Rates ....................................................................... 4-3 B4.3 EXISTING INSTREAM FLOW RELEASES........................................................ 4-6 B5.0 HYDROLOGY—PROPOSED CONDITIONS.............................................................. 5-1 B6.0 LINK RIVER DAM .......................................................................................................... 6-1 B6.1 FACILITY OVERVIEW ........................................................................................ 6-1 B6.2 OWNERSHIP AND CONTRACTUAL OBLIGATIONS ..................................... 6-1 B6.3 EXISTING OPERATIONS..................................................................................... 6-2 B6.4 FUTURE OPERATIONS ....................................................................................... 6-4 B7.0 EAST SIDE AND WEST SIDE DEVELOPMENTS..................................................... 7-1 B7.1 INTRODUCTION................................................................................................... 7-1 B7.2 EAST SIDE DEVELOPMENT OVERVIEW ........................................................ 7-1 B7.3 EAST SIDE POWERHOUSE CONTROL............................................................. 7-1 B7.3.1 Annual Plant Factor.................................................................................. 7-2 B7.3.2 Period of Critical Stream Flow, Average Annual Energy Production, and Dependable Capacity ........................................................................ 7-2 B7.3.3 Area-Capacity Curve and Rule Curve...................................................... 7-2 © February 2004 PacifiCorp Exhibit B.doc Exhibit B Page iii PacifiCorp Klamath Hydroelectric Project FERC No. 2082 B7.3.4 Hydraulic Capacity................................................................................... 7-2 B7.3.5 Tailwater Rating Curve ............................................................................ 7-2 B7.3.6 Power Plant Capacity Versus Head Curve............................................... 7-2 B7.4 WEST SIDE FACILITY OVERVIEW................................................................... 7-2 B7.4.1 West Side Powerhouse Control................................................................ 7-7 B7.4.2 Annual Plant Factor.................................................................................. 7-7 B7.4.3 Period of Critical Stream Flow, Average Annual Energy Production, and Dependable Capacity ........................................................................ 7-7 B7.4.4 Area-Capacity Curve and Rule Curve...................................................... 7-7 B7.4.5 Hydraulic Capacity................................................................................... 7-9 B7.4.6 Tailwater Rating Curve ............................................................................ 7-9 B7.4.7 Power Plant Capacity Versus Head Curve............................................... 7-9 B7.5 EAST SIDE AND WEST SIDE DECOMMISSIONING....................................... 7-9 B8.0 KENO DEVELOPMENT................................................................................................. 8-1 B8.1 INTRODUCTION................................................................................................... 8-1 B8.2 DEVELOPMENT OVERVIEW............................................................................. 8-1 B8.3 OWNERSHIP AND CONTRACTUAL OBLIGATIONS ..................................... 8-1 B8.4 OPERATIONS........................................................................................................ 8-2 B8.4.1 Description of Plant Control .................................................................... 8-5 B8.4.2 Keno Drawdown ...................................................................................... 8-5 B9.0 J.C. BOYLE DEVELOPMENT....................................................................................... 9-1 B9.1 DEVELOPMENT OVERVIEW............................................................................. 9-1 B9.2 OWNERSHIP AND CONTRACTUAL OBLIGATION ....................................... 9-1 B9.3 OPERATIONS........................................................................................................ 9-1 B9.4 ANNUAL PLANT FACTOR ................................................................................. 9-4 B9.5 PERIOD OF CRITICAL STREAM FLOW, AVERAGE ANNUAL ENERGY PRODUCTION, AND DEPENDABLE CAPACITY......................................... 9-4 B9.6 AREA-CAPACITY CURVE AND RULE CURVE .............................................. 9-4 B9.7 HYDRAULIC CAPACITY .................................................................................... 9-4 B9.8 TAILWATER RATING CUR`VE.......................................................................... 9-9 B9.9 POWERPLANT CAPACITY VERSUS HEAD CURVE...................................... 9-9 B10.0 COPCO NO. 1 DEVELOPMENT ............................................................................... 10-1 B10.1 DEVELOPMENT OVERVIEW......................................................................... 10-1 B10.2 OWNERSHIP AND CONTRACTUAL OBLIGATION ................................... 10-1 B10.3 OPERATIONS.................................................................................................... 10-1 B10.4 ANNUAL PLANT FACTOR ............................................................................. 10-2 B10.5 PERIOD OF CRITICAL STREAM FLOW, AVERAGE ANNUAL ENERGY PRODUCTION, AND DEPENDABLE CAPACITY...................... 10-2 B10.6 AREA-CAPACITY CURVE AND OPERATING CURVE .............................. 10-2 B10.7 HYDRAULIC CAPACITY ................................................................................ 10-2 B10.8 TAILWATER RATING CURVE....................................................................... 10-2 B10.9 POWERPLANT CAPACITY VERSUS HEAD CURVE.................................. 10-2 B11.0 COPCO NO. 2 DEVELOPMENT ............................................................................... 11-1 B11.1 DEVELOPMENT OVERVIEW......................................................................... 11-1 B11.2 OWNERSHIP AND CONTRACTUAL OBLIGATION ................................... 11-1 © February 2004 PacifiCorp Exhibit B Page iv Exhibit B.doc PacifiCorp Klamath Hydroelectric Project FERC No. 2082 B11.3 OPERATIONS.................................................................................................... 11-1 B11.4 ANNUAL PLANT FACTOR ............................................................................. 11-2 B11.5 PERIOD OF CRITICAL STREAM FLOW, AVERAGE ANNUAL ENERGY PRODUCTION, AND DEPENDABLE CAPACITY...................... 11-2 B11.6 AREA-CAPACITY CURVE AND RULE CURVE .......................................... 11-2 B11.7 HYDRAULIC CAPACITY ................................................................................ 11-2 B11.8 TAILWATER RATING CURVE....................................................................... 11-3 B11.9 POWERPLANT CAPACITY VERSUS HEAD CURVE.................................