All Tunnel Alignment All Tunnel Alignment & Option Comparisons & Option Comparisons Presented to: Presented to: BDCP Steering Committee BDCP Steering Committee December 3, 2009 December 3, 2009 DRAFT DRAFT
Option Comparison Option Comparison � Alignment of Options � Alignment of Options � Major Features � Major Features � Comparison Tables � Comparison Tables � Pros & Cons � Pros & Cons � Mitigation Mitigation – – Environmental Environmental – – Cost Cost � DRAFT DRAFT
Alignment Alignment Comparison Comparison DRAFT DRAFT
ICF - - East East ICF •40 miles of canals •4 short tunnels •8 siphons •630-acre forebay •5 intake facilities with fish screens along the Sacramento River •6 pump stations DRAFT DRAFT
ICF - - West West ICF •38 miles of canals •17 miles of tunnels •12 siphons •580-acre forebay •5 intake facilities along the Sacramento River •6 pump stations DRAFT DRAFT
All Tunnel Option All Tunnel Option •Approximately 43 miles of tunnels •35 miles twin bore 33’ ID •8 miles single bore 23’ and 33’ ID intake tunnels •750-acre Intermediate Forebay •630-acre Byron Tract Forebay •5 intake facilities along the Sacramento River •6 pump stations •Surge Towers •Gravity Bypass System DRAFT DRAFT
Typical Canal Cross Section Typical Canal Cross Section DRAFT DRAFT
DRAFT DRAFT M-30 By-Pass Sur Túnel Norte, Madrid EPB Shield – 15.200 m diameter
Tunnel Boring Machine (TBM) Diameter Development Tunnel Boring Machine (TBM) Diameter Development DRAFT DRAFT
DRAFT DRAFT Major Features Major Features
Comparisons Comparisons Intakes – – Fish Screens Fish Screens – Intakes – – Footprint Footprint – – Annual Energy Cost Annual Energy Cost – – TDH TDH – – Construction Power Construction Power – – Conventional Equipment Conventional Equipment – – O & M O & M – – Schedule Schedule – DRAFT DRAFT
DRAFT DRAFT Footprint Footprint
Annual Energy and TDH Annual Energy and TDH DRAFT DRAFT DRAFT DRAFT
Construction Power & Truck Construction Power & Truck Hours Hours DRAFT DRAFT
Operations & Maintenance Operations & Maintenance DRAFT DRAFT
Construction Schedule Construction Schedule DRAFT DRAFT
Engineering and Construction Engineering and Construction Pros and Cons Pros and Cons DRAFT DRAFT
Conveyance Land Costs Conveyance Land Costs •Does not include state and federal owned land in footprint. •Does not include any cost for acquiring subsurface DRAFT DRAFT easements for tunnels
Conveyance Land Cost Notes Conveyance Land Cost Notes � � Acre tallies exclude state and federal land Acre tallies exclude state and federal land � � Unit land costs from Chap. 8 common assumptions Unit land costs from Chap. 8 common assumptions � � Costs include 7.3% adder for due diligence and other transaction Costs include 7.3% adder for due diligence and other transaction costs costs � � Acreage categories: native veg., field crop, truck crop, orchard, vineyard, semi , vineyard, semi- -ag ag, non , non- - Acreage categories: native veg., field crop, truck crop, orchard residential urban, residential urban residential urban, residential urban � � Avg Avg land cost depends on mix of acreage in footprint land cost depends on mix of acreage in footprint � Residential structures priced at county average � Residential structures priced at county average � � Assumes land acquired thru Fee- Assumes land acquired thru Fee -Title. Easements would have lower unit cost Title. Easements would have lower unit cost � Estimate does not consider price dynamics (land prices could get bid up) bid up) � Estimate does not consider price dynamics (land prices could get � � Estimate does not consider extraordinary transaction costs Estimate does not consider extraordinary transaction costs � Estimate does not include contingency � Estimate does not include contingency � � Preliminary estimate for comparative purposes only Preliminary estimate for comparative purposes only -- -- land costs for surface alignments land costs for surface alignments 3 3- -4 times greater than for tunnel 4 times greater than for tunnel DRAFT DRAFT
Environmental Impact Environmental Impact Evaluation Methods Evaluation Methods � � Habitats, agricultural lands, and developed lands based on DFG 2007 Habitats, agricultural lands, and developed lands based on DFG 2 007 Vegetation Cover Survey as interpreted into the SAIC BDCP Natural l Vegetation Cover Survey as interpreted into the SAIC BDCP Natura Communities GIS Data Layer. Communities GIS Data Layer. � Effects on habitats calculated based on conveyance and associated d � Effects on habitats calculated based on conveyance and associate facilities footprints provided by DWR engineers. facilities footprints provided by DWR engineers. � � Permanent disturbance assumed for canal, intake facilities, pump stations, Permanent disturbance assumed for canal, intake facilities, pump stations, reservoirs. reservoirs. � � Temporary disturbance assumed for siphons, pipelines, borrow and spoils spoils Temporary disturbance assumed for siphons, pipelines, borrow and areas, and work areas. areas, and work areas. � � Tunnels were assumed to have no impact. Tunnels were assumed to have no impact. DRAFT DRAFT
Environmental Impacts Environmental Impacts In acres (unless otherwise indicated); P = permanent, T = temporary In acres (unless otherwise indicated); P = permanent, T = tempor ary West Alignment West Alignment East Alignment East Alignment Tunnel Tunnel Sensitive Habitats Sensitive Habitats Riparian Riparian 23 P 23 P 36 P 36 P 15 P 15 P 51 T 51 T 31 T 31 T 1 T 1 T Alkali Wetland Alkali Wetland 37 P 37 P 8 P 8 P 8 P 8 P 79 T 79 T 0 T 0 T 0 T 0 T Tidal Marsh Tidal Marsh 0 P 0 P 11 P 11 P 6 P 6 P 6 T 6 T 2 T 2 T 0 T 0 T Grassland Grassland 280 P 280 P 390 P 390 P 200 P 200 P 400 T 400 T 330 T 330 T 150 T 150 T Agricultural Land Agricultural Land 7,000 P 7,000 P 7,300 P 7,300 P 2,100 P 2,100 P 9,600 T 9,600 T 9,000 T 9,000 T 3,900 T 3,900 T Built Environment Built Environment Developed lands Developed lands 194 194 224 224 26 26 Transportation Transportation 20 roads 20 roads 18 roads 18 roads 0 0 (crossings) (crossings) Navigation Navigation 12 water courses 12 water courses 8 water courses 8 water courses 0 0 (siphons) (siphons) DRAFT DRAFT
Giant Garter Snake Habitat Impacts Giant Garter Snake Habitat Impacts (P = permanent, T = temporary) (P = permanent, T = temporary) DRAFT DRAFT
Rough Mitigation Land Costs Rough Mitigation Land Costs Assumptions: 1) Habitat impacts mitigated through proposed BDCP restoration of tidal marsh/aquatic and riparian habitats are not included in impact total 2) Assumed two acres of mitigation land for every acre of permanent impact and one acre of mitigation land for every acre of temporary impact – general assumption without taking into consideration habitat function DRAFT DRAFT 3) Land acquisition cost of $10,000 per acre
Cost Cost These Numbers are Preliminary and Subject to Change These Numbers are Preliminary and Subject to Change DRAFT DRAFT
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