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Home My WebLink AboutCOW 2014-06-23 Item 2B - Powerpoint Presentation Shown at Meeting - Cascade Water AllianceCASCA D[ WA! EH r LLI. C,! Water Supply Presentation Tukwila Council Briefing on Strategic Planning, Water Demand, & Lake Tapps By: Pat Brodin, Operations Manager une Z3, 2014 TO BE COVERED... (Summary of the May 2014 Cascade Board Retreat) • Cascade Water A/ /lance History Brief • Cascade Member Questions • Cascade Water Strategic Plan • Tuk wi/a Water Supply Options • Regional Water Demand • Lake Tapps Operations /Future Supp/y EE C.CDE What questions are being raised? • Staffing level & Staff Succession — What are the appropriate current and future staffing levels and flexibility goals? Can we adapt to changing priorities as they occur? — How should we work with the Board to develop succession strategies that optimize recruitment, salaries, skill sets, and retention of organizational knowledge? • Rate Strategy — Depending on capital funding direction, Cascade revenues are projected to track with inflation (It can be safely assumed to budget an increase for 2015 at 3% - It could be less depending on data from Seattle) 3 cAs4cASE What questions are being raised? • Budget /RCFCs (Residential Cascade Facility Charge) — Budget, finance, and RCFC Methodology (To be presented later by Ed Cebron) — Fiscal policy shifts 50% of RCFC revenues to the Construction Fund over the next several years. Should we re- examine the methodology and ultimately shift all RCFCs to construction? • Asset Ownership (White River /Lake Tapps Facility) — Lake Tapps represents a significant asset that with substantial capital and operation needs. Is the Board open to maximizing the value of Lake Tapps based on the latest information on supply and demand? • Overall Future Supply Management — Cascade supply is currently supplemental to member independent supplies. A coordinated approach could delay the need for new supply development. 4 CASCADE Tukwila Water Supply Options Wholesale Taps and Interties Tukwila Supply Taps & Interties Cedar River P.L. #4 CASCADE WATER Al 1 IA NC E Update on Water Demand, Conservation, & Capital Annual 141GD 260 240 220 - 200 180 160 10 120 -� 100 - 80 60 = 40 - 20 - 0 go 1 ,+ 1 • 1 r . . r r w r 1. • r • P - tr Actual Consumption .0 1967 5WD forecast -- 1973 RISCO Forecast 1940! 1 T 1 1 1 1 1 f I f 1 1 1 1 194'5 1950 1955 19160 1965 19}0 1975 197} 1985 1990 1995 2000 24� 2010 2415 1980 Cornplan forecast Medium 1980 Cornplan Forecast Medium -Low 1985 Cornplan Forecast Medium 1993 VYSP forecast 1997 Revised Fvecasi 2001 WSP forecast 2003 Official For east 2007 WSP Forecast Current Forest 2020 Seattle Public Utilities 424/12 7 CASCADE Factors Causing Changes in Demand LIATFR A11 I;1N( .E Trends 1) Plumbing Efficiency and Regulation • New development has reduced impact on indoor water use • Existing development gains efficiency over time 2) Conservation and Technology • Explicit investments reduce existing demands • Heightened awareness changes behavior • Water system efficiency also improving; reduced losses 3) Densification • New development has smaller landscape footprint reducing irrigation load • Trend to high density multi - family also reduces irrigation loads • Existing lower density land use replaced with higher density (low irrigation) development 4) Pricing • Water rates focus costs on high peak demands • Rising water and sewer rates deter all water usage n 25 - 0 2 2 29 - cD c 0 ,c5 15 CASCADE WATER ALLIANCE 30 - Cumulative Water Savings from Conservation (Seattle Public Utilities) System Operation Improvements Conservation Programs Rates +Code 1 999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 9 CASCADE WATER ALLIANCE 100 80 60 2 Cascade Supply Portfolio (Avg. Day Demand) Current Seattle & Tacoma Agreements •Historical Demand Forecast Demand - Mean Forecast Demand - 95th Percentile High Efficiency 2006 Low Forecast Prior date of decline in Seattle block supplies Includes 10% higher growth 100 80 Lake Tapps Member Supplies 0 — 0 2000 2005 2010 2015 2020 2025 2030 2035 2040 2045 2050 2055 2060 2065 2070 2075 10 CASCADE WATER ALLIANCE 100 80 Cascade Supply Portfolio (Avg. Day Demand) Extended Seattle & Tacoma Agreements Historical Demand Forecast Demand - Mean Forecast Demand - 95th Percentile High Efficiency /Reduced Peaks 2006 Low Forecast Prior date of decline in Seattle block supplies (2024) Lake Tapps 1 100 80 60 40 20 0 0 2000 2005 2010 2015 2020 2025 2030 2035 2040 2045 2050 2055 2060 2065 2070 2075 11 $300 Lei 0 $250 $200 $150 — Sioo $50 CASCADE 410k1ER it19AN(E Cascade Water Alliance Projected Capital Improv mr�# Lake Tapps Phase 2 Lake Tapps WTF and Pipelines: Phase 1 Tacoma - Cascade Pipeline T- -- � �1 I i i 1 i i i i i i i i i i i 1 w 1 1 CO 0 NI 00 0 NI CO 0 NI GC 0 NI RI- r-11 N3 NJ r%4 C 1 9'11 f' c 4 f! 4" i t F 0 0 0 0 0 0 0 0 0 0 0 0 0 NI dN 9 J 9-*9 NJ NI NJ N f`:1 94+J 1 J NI NJ NJ —CIP, Current Cost C1P, Inflated 12 Capital Improvement Plan Withc, New Contracts Total Cost In Service Summary of CIP (all in Current Costs) Start Date End Date Notes ($ millions) Date Credit Repurchase $10.2 n/a 2013 2013 payment in 2013 Lake Tapps Upgrades $23.2 n/a 2013 2023 no provision after 2023 Seattle Contract $22.0 n/a 2013 2024 payments in 2013, 2018 and 2024 Tacoma Contract $119.7 n/a 2013 2042 payments reduce in 2030 Tacoma- Cascade Transmission & Storage $73.6 2032 2028 2031 may be integrated w Lake Tapps Lake Tapps Transmission & Storage $437.0 2041 2031 2039 all Transmission capacity Lake Tapps Treatment Phase 1 $149.5 2041 2035 2040 50% of Treatment capacity Lake Tapps Treatment Phase 2 $108.5 2052 2045 2051 50% of Treatment capacity Cascade Internal Conveyance $140.6 2048 2045 2064 distributes water to members n/a 2046 n/a provision for ongoing R &R Total $1,178.4 13 CASCADE WATER AI 1 IANC E Lake Tapps and the White River Facility Operations Ownership and Operational I Lake Levels Dike Management • Continue to exercise our rights to fill Lake Tapps to 543' each year • Exercising our rights to annually lower Lake Tapps for maintenance /capital projects to the level we determine as appropriate • Manage all current and future structures and activities on the dikes • Manage appropriate access to the dikes • Manage construction projects • Monitor condition of all dikes Stormwater • Manage, evaluate, and determine whether to renew existing (stormwater) leases Management • Identify and manage all existing stormwater inflows • Determine how to be involved in the preview and approval of future basin development impacts on stormwater • Determine how best to achieve and manage all regulatory requirements Water Rights • How do we maintain our current water right? • How do we enforce our current water right against unpermitted withdrawals? Basin • Do we initiate a basin planning process or encourage someone else to initiate? Development • How active do we become in future county and city development issues? Issues • How do we best maintain and update our current water supply model? • Continue to examine Power House condition and determine appropriate replacement issues 15 LAKE TAPPS WATER RIGUT This presented is resen ted to CASCADFWATER A CASC DBE W T R Al.clANCE La KRA -ITS The Washington State Department of Ecology is issuing Cascade Water Alliance water rights for 54, 300 acre -feet of water for the Lake Tapps Water Supply Project. The Project will supply many years of water for Cascade's customers and will safeguard Lake Tapps and the White River. Ecology appreciates the years of hard �' pp arcade re resentatives have invested in this Project. Work and creative thinking that C P Signed ed this day of December 15, 2010 dP Ted Star dcvant, Director Colo on Department of E gy Washington ECOLOGY to of 1M3shingto ''E WER ALL ul,r t'E Lake Tapps Facility Schematic — Intake to Tail -race ZE 44 iE ALL100,10E svo c9 MIL 114 White River Hydro- Generation Facility Built in 1906 ? ? ?? CASCADE ),VdtlEct ALt1ANC! White River Dam Valving & Piping CASCADE L Property of Special Collections, University of Washington Libraries. CASCa VN+iWER ALL ul,r t'E White River Wooden Flume near Buckley ASC f WATER ALLIANCE Fish Screen prior to Lake Tapps ZE k4 WER ALLIANCE Source of the White River — East slopes of Mount Rainier... CASCADE WATER AI 1 IANC E Wrap -up: Future Supply & Tukwila • Tukwila Supplied from the Cedar — the next 50 years. • Update Emergency Interties w/ border jurisdictions • Expand & Enhance Tukwila Use of Reclaimed Water 24