part 1 operations, facilities & costs january 28 -- february 4, 2003

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Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

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Page 1: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

Part 1Operations, Facilities & Costs

January 28 -- February 4, 2003

Page 2: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

2

Meeting Purpose & Agenda

• Meeting Purpose– Review and discuss a potential CALFED Los

Vaqueros Reservoir expansion project -- the facilities required and how it would operate

• Agenda– 2003 Studies: Information and Schedule– Current Delta Operations– Los Vaqueros Reservoir Expansion Operations

• CCWD and Bay Area Water Quality and Reliability• Delta Enhancement

– Facilities, Construction Schedule, and Costs

Page 3: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

3

Meeting Guidelines

• Ensure Everyone's Participation– One speaker at a time– Minimize side conversations

• Honor Our Time Limits– Keep comments concise and avoid redundancy – Use ditto to agree with

others

• Commit to Being Fully Present– No cell phones, pagers, voicemail, etc.– Ask for what you need from the meeting process

• Respect Each Other– Listen carefully to other participants and try other opinions on for size– Respond to ideas and issues, not individuals

• Identify Yourself– State your name and organization or community

Page 4: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

4

2003 Study Activities

•Extensive public outreach–Now through June 2003

•Provide facts & information

•Key dates–CCWD Board decision -- July 2003

–Potential vote -- November 2003

Where we are now….

Page 5: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

5

Public Workshops

• Today’s Discussion– Potential Project -- How would an expanded reservoir

operate, what facilities are needed, and what would they cost?

• Future Workshops– Part 2 -- Partners, Benefits & Payments – benefits to

CCWD, CALFED, and Bay Area water agencies; potential organizational structure and agreements among partners

– Part 3 -- Environmental Effects & Mitigation – Impacts and strategies for addressing potential adverse effects

– Part 4 -- Review of CCWD Principles and responses to comments

Page 6: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

Information Available Now

OPERATIONSDelta Water System - How the Delta water system works and how an expanded reservoir would operate with other partnersPotential Partners - List of potential partners, their needs, and the benefits an expanded reservoir could provide themWater Rights - Description of water rights changes neededWater Quality - Benefits for CCWD and other Bay Area water agenciesReliability - Benefits for CCWD and other Bay Area water agenciesDelta Environment - Environmental benefits for the Delta

FACILITIES & COSTSDelta Intakes - Size of facilities, possible facility layouts for fish screens, and pumping capacityPipelines - Capacity, corridors, and lengthDam - Size, location, safety features, construction schedule, reservoir inundation area, and interim water supply planCost Estimates - Planning level construction and operation & maintenance costs

OPERATIONSDelta Water System - How the Delta water system works and how an expanded reservoir would operate with other partnersPotential Partners - List of potential partners, their needs, and the benefits an expanded reservoir could provide themWater Rights - Description of water rights changes neededWater Quality - Benefits for CCWD and other Bay Area water agenciesReliability - Benefits for CCWD and other Bay Area water agenciesDelta Environment - Environmental benefits for the Delta

FACILITIES & COSTSDelta Intakes - Size of facilities, possible facility layouts for fish screens, and pumping capacityPipelines - Capacity, corridors, and lengthDam - Size, location, safety features, construction schedule, reservoir inundation area, and interim water supply planCost Estimates - Planning level construction and operation & maintenance costs

Page 7: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

7

CCWD Principles for Participation

• The project improves water quality and reliability for CCWD • The project enhances the Delta environment• The project protects and enhances the fisheries and terrestrial species

benefits provided by the existing Los Vaqueros Project• The project preserves and increases the recreational opportunities of the

Los Vaqueros Project• CCWD must maintain control of watershed and operation of the reservoir• The project protects and reimburses the financial investment made by the

CCWD customers who financed the existing $450 million Los Vaqueros Project

• The proposal would be placed before the voters of the Contra Costa Water District

Page 8: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

8

Project Overview

• CALFED is studying whether an expanded Los Vaqueros Reservoir can meet CALFED and Bay Area water agencies’ objectives

• Water Quality• Reliability• Environmental

Enhancement

• Expansion from 100,000 acre-feet up to 500,000 acre-feet maximum capacity

Page 9: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

9

What are Important Water Quality Parameters?

• Salts– From seawater intrusion or other discharges -- Cause

taste and corrosion problems; impede water recycling• Organics and Bromide

– Harmful chemical by-products can be formed when water is disinfected

• Pathogens (bacteria or viruses)– From runoff, discharges, or human activities -- Treated

with filters and disinfection

Page 10: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

10

What is Reliability?

• Emergency Storage– Storing water to protect against a disaster (earthquake,

power failure, levee failure, pipeline failure, or chemical spill)

• Drought Storage– Storing water in wet years for use during dry years

• Flexibility– Ability to stop Delta diversions to protect fish without

disrupting water users

Page 11: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

11

Environmental WaterImproves Fisheries & Habitat

• Environmental Water Account (EWA)– Integral part of CALFED Program to restore the Delta– Like a bank account: Assets controlled by fisheries agencies to

enhance Delta fisheries and habitat• Protecting fish by shutting off pumps (changing the timing of diversions)• Providing flows to enhance fisheries• Assets can include water, storage, conveyance capacity, and

operational flexibility

• Federal Wildlife Refuges– Water supply to 10 wildlife refuges in the San Joaquin Valley

• In-stream Flows– Water supply to provide stream flows for fish at critical times

Page 12: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

12

Bay Area Water Agencies

Page 13: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

13

Delta Water Diversion Facilities

Page 14: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

14

BayArea

Outflow

SCVWD

Zone 7

ACWD

CCWD

EBMUD

Upstream Users

SWP Exports

SFPUC

In-Delta Users

CVP Exports

Bay Area0.8 MAF/yr

Delta System35.6 MAF/yr

Bay Area Water Use

Potential Partners

Bay Area Water Agencies Use a Small Piece of the Delta Water System

Page 15: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

15

Existing Los Vaqueros Project

• Provides Emergency Storage– Protects against a catastrophe in the Delta

• Improves Water Quality– Changes the timing and location of diversions– Stores water for blending when Delta water quality is

poor• Enhances Delta Environment

– State-of-the-art fish screens– Flexible timing and location of diversion

Page 16: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

16

Existing Los Vaqueros Project

Old RiverIntake Facility

Contra Costa Canal

Los VaquerosReservoir & Watershed

CCWDService Area

Rock SloughIntake Facility

Page 17: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

17

Existing Los Vaqueros Project

Typical annual Los Vaqueros operation

0

20

40

60

80

100Reservoir

Level (thousand acre-feet)

HIGHDelivered Water Quality

January July December

a

a

HIGH LOWDelta Water Quality CHANGE CHANGE

FILL STOP FILL / RELEASE FOR FISH FILL HOLDAction at Reservoir HOLD RELEASE

Reservoir level depends on year

type (dry, wet)

Reserved for Emergency

Page 18: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

18

Existing Los Vaqueros Project

Without Blending fromLos Vaqueros

With Blending fromLos Vaqueros

Ch

lor i

des

(p

a rt s

per

mi ll

ion

)

Storage in Los Vaqueros Reservoir lowered chlorides delivered to CCWD customers

1999

Page 19: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

19

Existing Los Vaqueros Project

Fisheries agencies concluded that the Los Vaqueros Project improved the Delta environment for current and future CCWD diversions

2002 Fish Monitoring atCCWD Old River Intake

Species Numberentrained

Winter run chinook salmon 0Spring run chinook salmon 0Steelhead 0Delta smelt 0Splittail 0Other 775Source: CA Dept. of Fish and Game

Page 20: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

20

Questions and Discussion

• Workshop Process and Public Review• Project Purposes and CALFED Goals

• Improve Bay Area water quality and reliability• Enhance Delta environment

• Current Operations– Delta Operations

• Water Quality• Reliability• Delta Enhancement

– Existing Los Vaqueros Project

Page 21: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

21

Meeting Agenda

• Agenda– 2003 Studies Activities and Available Information– Current Delta Operations– Los Vaqueros Expansion Operations

• Operating Scenarios• CCWD and Bay Area Water Quality and Reliability• Delta Enhancement

– Facilities, Construction Schedule, and Costs

Page 22: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

22

Operating Scenarios

• Developed full range of possible ways to operate an expanded reservoir– Environmental water priority– Bay Area reliability priority– Multi-purpose (combination)

• Compared to future conditions without an expansion

• Determined there are projects that could meet CALFED objectives and CCWD Principles

Page 23: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

23

Operating Scenarios Constraints

• Delta Protection– Operate within all regulatory requirements– Use only surplus flow and existing water rights / contracts to fill

reservoir• Fishery Protection: conservative

– Assumed two month “no-fill” period in spring for fish protection– Operate within all fish protections measures

• Protection for Other Users– No injury to water right holders or contractors

• Analyzed 70 years of rainfall patterns– Including critically dry (1977) and extended drought (1928-

1934 and 1987-1992) years

Page 24: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

24

Opportunities to Fill an Expanded Reservoir

Typical Delta Water Quality Seasonal Variation

0

100

200

300

400

500

Oct

Nov

Dec Jan

Feb

Mar

Apr

May Jun

Jul

Aug

Sep

Months

To

tal D

iss

olv

ed

S

olid

s (

pp

m)

Best Water Quality - Best Time to Fill Reservoir

Possible pumping restrictions to protect fish

Page 25: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

25

Operating ScenariosSingle-Purpose Scenarios

Future w/oExpansion

Environmental– EWA Program uses reservoir capacity to

deliver SBA water– EWA Program uses

flexibility to shut downexport pumps to protect fish

Reliability– Reservoir stores water

for use in dry years by SBA agencies

CCWD WQ

CCWD ES

CCWD WQ

CCWD ES

DROUGHT STORAGE

& WQ

CCWD WQ

CCWD ES

ENV. WATER

& WQ

CCWD WQ

CCWD ES

ENV. WATER

& WQ

CCWD ES

CCWD ES

CCWD ES

Page 26: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

26

Operating ScenariosMulti-purpose Scenarios

Drought Storage & Environmental Water

– Reservoir stores water for use in dry years by SBA agencies

– EWA Program uses reservoir capacity to deliver SBA water

– EWA Program uses flexibility to shut down export pumps to protect fish

Federal Benefits– Federal agency uses

reservoir capacity to deliver SBA water

– Federal agency uses flexibility to

• shut down export pumps to protect fish

• provide water supplies for wildlife refuges

CCWD WQ

DROUGHT STORAGE

CCWD DROUGHT STORAGE

CCWD ES

ENV. WATER

& WQ

CCWD WQ

CCWD ES

ENV. WATER

& WQ

DROUGHT STORAGE

CCWD WQ

CCWD ES

ENV. WATER

& WQ

DROUGHT STORAGE

CCWD ES

CCWD ES

CCWD ES

Page 27: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

27

Drinking Water Quality Benefits

• Major Findings– Water Quality

• All scenarios would improve drinking water quality for CCWD

• All scenarios would improve drinking water quality for Bay Area agencies served by the South Bay Aqueduct

Page 28: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

28

Drinking Water Quality Benefits

• As the state continues to grow there will be increased pressure on the Delta and declining water quality

• Expanded Los Vaqueros Reservoir would improve water quality for CCWD and Bay Area water agencies– New intakes would reduce salts and bromide– Larger intakes allow faster reservoir filling when quality is better– Deeper reservoir with multiple intakes reduces organics

• These improvements result in– Reduced public health risks– Improved taste – customer satisfaction– Reduced treatment costs and improved ability to meet existing

and future water quality regulations

Page 29: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

29

Drinking Water QualityBenefits for CCWD

More high quality water delivered to CCWD customers during extended droughts

• Before the existing reservoir, CCWD could not provide high quality water during droughts or in any dry periods– No water available for blending

• With the existing reservoir, CCWD can deliver high quality water through a 3-year drought

• With an expansion, CCWD could deliver high quality water through a 6-year drought

Page 30: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

30

0

25

50

75

100

125

150

175

200

225

250

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

Water Quality Benefits to CCWD as Delivered Chlorides (ppm)

Future Conditions without an Expansion

Without Expansion

Drinking Water QualityBenefits for CCWD

CCWD can improve water quality delivered to customers with an expansion

Wet Normal Dry Extended Dry

Page 31: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

31

0

25

50

75

100

125

150

175

200

225

250

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

Future Conditions with an Expanded Reservoir

Water Quality Benefits to CCWD as Delivered Chlorides (ppm)

Without Expansion

With Expansion

Drinking Water QualityBenefits for CCWD

CCWD can improve water quality delivered to customers with an expansion

Water QualityImprovement

for CCWD

Wet Normal Dry Extended Dry

Page 32: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

32

Benefits to Potential PartnersWater Quality

• An expanded reservoir could reduce the times that South Bay Aqueduct agencies taste salts in the water

• An expanded reservoir would reduce the maximum day salt levels

– Now: 250 ppm– With expansion: 150 ppm

25%

5%0%

5%

10%

15%

20%

25%

30%

100 ppm Chlorides

Future withoutan Expansion

Future withan Expansion

Percent of time delivered water would exceed 100 ppm Chlorides

Page 33: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

33

66

68

70

72

74

76

78

16:0

2:00

21:5

2:00

3:42

:00

9:32

:00

15:2

2:00

21:1

2:00

3:02

:00

8:52

:00

14:4

2:00

20:3

2:00

2:22

:00

8:12

:00

14:0

2:00

19:5

2:00

1:42

:00

7:32

:00

13:2

2:00

°F

6

6.5

7

7.5

8

8.5

9

pH

Raw Water Temperature Raw Water pH

Reduced Daily Variability forPotential Partners

Source: ACWD– Los Vaqueros would be deeper pool than Clifton Court

• Reduced temperature variation• Reduced algae blooms• Reduced pH variation

– Improved quality of deliveries to treatment plants means:• Improved treatment stability• Decreased cost

An expanded Los Vaqueros Reservoir would reduce variation in deliveries to treatment plants

Night Day Night Day Night Day Night Day

Page 34: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

34

Reliability Benefits

• Major Findings– An expanded Los Vaqueros Reservoir could be

operated to provide more reliable water supplies• 60,000 to 120,000 acre-feet of water in drought

years for CCWD (as alternative to current drought year plans)

• 110,000 to 300,000 acre-feet of water to South Bay Aqueduct agencies in drought years

Page 35: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

35

Spot Purchases & Drought Mgmt

Reliability Benefits for CCWD

Single Dry Year

Multi-Year Drought

CVPContract(Federal)

Purchases

Expanded Los Vaqueros could reduce the need for spot purchases and rationing in dry periods (with higher quality)

CVPContract(Federal)

FutureDemand

Other (e.g. Recycling)

Other (GW)Other (e.g. Recycling)

Future NeedConservation Conservation

VoluntaryConservation

Purchases

VoluntaryConservation

Normal Year

CVPContract(Federal)

PurchasesOther

(e.g. Recycling)

Conservation

How water needs are met in normal and dry years

Page 36: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

36

Expanded Los Vaqueros could provide this water (with higher quality)

Spot Purchases & Drought Mgmt

Reliability Benefits forPotential Partners

Single Dry Year

Multi-Year Drought

ContractSources

Local Storage

ContractSources

Future Demand

Other (e.g. Recycling)

Other (e.g. Recycling)

Future NeedConservation Conservation

VoluntaryConservation

Local Storage

VoluntaryConservation

Normal Year

ContractSources

Local Storage

Other (e.g. Recycling)

Conservation

Non-localStorage

How water needs are met in normal and dry years

Page 37: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

37

0%

20%

40%

60%

80%

100%

0% 20% 40% 60% 80% 100%Percent of Time At or Above

Per

cen

t o

f C

on

trac

t A

mo

un

t

South Bay Aqueduct (SBA) Reliability

(SWP Delta Water Delivery Study 2021B)

0

44

88

132

176

220

SB

A S

WP

Co

ntr

act

s (1

,000

AF

/YR

)

WETYEARSWET

YEARSDRY

YEARSDRY

YEARS

SBA Agencies Contract for 220,000 acre-feet/yearof Water from the State Water Project

NORMALYEARS

NORMALYEARS

CRITICALLY DRYYEARS

CRITICALLY DRYYEARS

Page 38: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

38

0%

20%

40%

60%

80%

100%

0% 20% 40% 60% 80% 100%

South Bay Aqueduct (SBA) Reliability

(SWP Delta Water Delivery Study 2021B)

0

44

88

132

176

220

SB

A S

WP

Co

ntr

act

s (1

,000

AF

/YR

)

SWP Availability

Reliable Supply

State Water Project Provides Full Contract Amount Only in the Wet Years

Per

cen

t o

f C

on

trac

t A

mo

un

t

Percent of Time At or Above

WETYEARSWET

YEARSDRY

YEARSDRY

YEARSNORMALYEARS

NORMALYEARS

CRITICALLY DRYYEARS

CRITICALLY DRYYEARS

Page 39: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

39

0%

20%

40%

60%

80%

100%

0% 20% 40% 60% 80% 100%

South Bay Aqueduct (SBA) Reliability

(SWP Delta Water Delivery Study 2021B)

0

44

88

132

176

220

SB

A S

WP

Co

ntr

act

s (1

,000

AF

/YR

)

SWP Availability

Reliable Supply

Repeat of 1987 to 1992 Drought = 40% Supply

In Dry Years SBA Agencies Could Get40% of Their Contract Amount

Per

cen

t o

f C

on

trac

t A

mo

un

t

Percent of Time At or Above

WETYEARSWET

YEARSDRY

YEARSDRY

YEARSNORMALYEARS

NORMALYEARS

CRITICALLY DRYYEARS

CRITICALLY DRYYEARS

Page 40: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

40

0%

20%

40%

60%

80%

100%

0% 20% 40% 60% 80% 100%

South Bay Aqueduct (SBA) Reliability

(SWP Delta Water Delivery Study 2021B)

0

44

88

132

176

220

SB

A S

WP

Co

ntr

act

s (1

,000

AF

/YR

)

SWP Availability

Reliable Supply

Repeat of 1987 to 1992 Drought = 40% Supply

Repeat of 1977 Critical Dry Year - 20% Supply

In Critically Dry Years SBA Agencies Could Only Get20% of Their Contract Amount

Per

cen

t o

f C

on

trac

t A

mo

un

t

Percent of Time At or Above

WETYEARSWET

YEARSDRY

YEARSDRY

YEARSNORMALYEARS

NORMALYEARS

CRITICALLY DRYYEARS

CRITICALLY DRYYEARS

Page 41: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

41

0%

20%

40%

60%

80%

100%

0% 20% 40% 60% 80% 100%

South Bay Aqueduct (SBA)Need for SWP Water

(SWP Delta Water Delivery Study 2021B)

0

44

88

132

176

220

SB

A S

WP

Co

ntr

act

s (1

,000

AF

/YR

)

SBA Agencies Average Need for SWP Water

SBA Agencies Have Excess Water in Wet Yearsand a Supply Gap in Dry Years

SupplyGap

SupplyGap

Excess WaterAvailable

Per

cen

t o

f C

on

trac

t A

mo

un

t

Percent of Time At or Above

WETYEARSWET

YEARSDRY

YEARSDRY

YEARSNORMALYEARS

NORMALYEARS

CRITICALLY DRYYEARS

CRITICALLY DRYYEARS

Conservation/OtherSWP Availability

Page 42: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

42

0%

20%

40%

60%

80%

100%

0% 20% 40% 60% 80% 100%

Potential Drought Protection Benefits for SBA Agencies

(Averages 25,000 AF/year)

(SWP Delta Water Delivery Study 2021B)

0

44

88

132

176

220

SB

A S

WP

Co

ntr

act

s (1

,000

AF

/YR

)

SWP Availability

SBA Needs for SWP Water

Deliver Water FromDelta to Storage

SWP Water is Available, In Wet Years, to Put into Storage

SupplyGap

SupplyGap

Per

cen

t o

f C

on

trac

t A

mo

un

t

Percent of Time At or Above

WETYEARSWET

YEARSDRY

YEARSDRY

YEARSNORMALYEARS

NORMALYEARS

CRITICALLY DRYYEARS

CRITICALLY DRYYEARS

Page 43: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

43

0%

20%

40%

60%

80%

100%

0% 20% 40% 60% 80% 100%

Potential Drought Protection Benefits for SBA Agencies

(SWP Delta Water Delivery Study 2021B)

0

44

88

132

176

220

SB

A S

WP

Co

ntr

act

s (1

,000

AF

/YR

)

SWP Availability

SBA Needs for SWP Water

Deliver Water FromDelta to Storage

Deliver WaterFrom

Storageto SBA

Deliver WaterFrom

Storageto SBA

Expanded Los Vaqueros Reservoir could provide up to 110,000 AF in a critically dry year and up to 300,000 AF in an extended drought

Per

cen

t o

f C

on

trac

t A

mo

un

t

Percent of Time At or Above

WETYEARSWET

YEARSDRY

YEARSDRY

YEARSNORMALYEARS

NORMALYEARS

CRITICALLY DRYYEARS

CRITICALLY DRYYEARS

Page 44: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

44

Potential BenefitsDelta Enhancement

• Expanded Los Vaqueros Reservoir Enhances Delta Environment– Reduces impacts to fisheries from existing SBA

Diversion• State-of-the-art fish screens• Flexible timing of diversion

– Creates storage and flexibility for Environmental Water that could allow

• Shut downs at state and federal pumps when fish are present (up to 158,000 acre-feet per year)

• Water for wildlife refuges• Water for in-stream flows upstream of Delta

Page 45: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

45

Potential BenefitsDelta Enhancement

Existing State Pumps–High volume–No outlet for fish–High fish losses

Existing & Potential Los Vaqueros Diversions–Low volume and velocity–Fish can swim past screens–Very low fish losses

Fish Screen

Page 46: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

46

Potential BenefitsDelta Enhancement

• Expanded Reservoir creates opportunity to store Environmental Water– EWA owns capacity in an

expanded Los Vaqueros Reservoir

– Fill reservoir when no fish are near pumps and water quality is good

– Normal export pumping– Deliveries to South Bay

agencies out of Los Vaqueros Reservoir

When Fish are not Present

Page 47: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

47

Potential BenefitsDelta Enhancement

• Expanded Reservoir Creates Opportunity for Environmental Water– No filling Los Vaqueros– Deliveries to South Bay

agencies out of Los Vaqueros Reservoir

– EWA reduces or stops export pumps

When Fish are near Pumps

Page 48: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

48

Potential BenefitsConclusions

• An expanded Los Vaqueros Reservoir could meet CCWD Principles 1 & 2– The project improves water quality and reliability for CCWD – The project enhances the Delta environment

• The project could meet CALFED objectives– Provide substantial water quality and reliability benefits for Bay

Area water agencies, including CCWD– Provide state and federal resource agencies with water for the

environment

Page 49: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

49

Questions and Discussion

• Expanded Los Vaqueros Reservoir Operations– Operating Scenarios– Range of Benefits for CCWD and Potential Partners

• Improve Bay Area water quality and reliability• Enhance Delta environment

Page 50: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

50

Meeting Agenda

• Agenda– 2003 Studies Activities and Available Information– Current Delta Operations and CALFED Goals– Los Vaqueros Reservoir Expansion Operations– Facilities, Construction Schedule, and Costs

• Delta Intakes and Fish Screens• Pumps and Pipelines• Dam and Watershed• Estimated Costs

Page 51: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

51

Potential Facilities for an Expansion Project

Delta Intake and Conveyance

Delta-Los Vaqueros Pipeline & Pump Station

LV-SBA Pump Station & Pipeline

Dam and Recreation

Page 52: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

52

Delta Intakes

• 1-3 intakes on Old River• 250 or 500 cfs each• Approximately 1-2 acres each

• 1-4 intakes on Middle River• 250 or 500 cfs each • Approximately 1-2 acres each

Page 53: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

53

Delta Intakes and Fish Screens

FishScreen

Water Flow

Page 54: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

54

Pumps and Pipelines

• New Delta Pump Station to fill reservoir

• 25 acre site• 1,000 to 1,750 cfs

• New pumps & pipeline to deliver water to South Bay Aqueduct (SBA)

• 7 miles• Up to 8 ft. diameter• 430 cfs (same as SBA

capacity)

• New pipeline(s) to fill reservoir• 9 miles, mostly in existing right-

of-way• Up to 12 ft. diameter

Page 55: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

55

Dam & Watershed

• New dam upstream of existing dam– Materials reused from

existing dam– New materials from within

reservoir area– 13 acre staging area

downstream of dam

Page 56: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

56

Dam Construction

Schedule4 years of dam construction

Range of SizesReservoir Capacity 300 500(thousands of acre-feet) Dam Height (FT) 290 360Dam Crest Length (FT) 1,850 2,300Volume (million cubic yards) 10.8 18.5

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57

Dam Construction

Dam SafetyConstructed to withstand maximum

credible earthquakeRedundant safety featuresContinuously monitored for safety

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58

Recreation FacilitySite Options

• Recreation facilities will be replaced and enhanced– The Marina– Fishing Piers– The Interpretive Center– Picnic Areas– Trails

• Many options identified for facility locations– Details to be presented in

Part 3 (April)

Page 59: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

59

Project Cost Estimate

• Cost includes the size of project elements:– Intake Facilities– Pipeline/Pumping

Facilities– New Dam/Reservoir

Facilities

Range of Estimated Project Costs

$0

$500

$1,000

$1,500

$2,000

300 TAF 500 TAF 500 TAF

1,000 cfs 1,000 cfs 1,750 cfs

Cos

t ($m

illio

ns)

Inflation to MidPoint Construction

Contingency (20%)

Other Project Costs(22%)

Construction Costs

Page 60: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

60

Project Cost EstimateCost Estimate

Description Cost ($ million)Reservoir (TAF)Diversion (cfs)

3001,000

5001,000

5001,750

FacilitiesIntake Facilities 29 30 53Delta Conveyance 28 28 55Pipelines 114 114 182Pump Stations 153 165 248Appurtenances 4 4 4Dam 219 284 285Power Supply 11 11 16Recreation Facilities 20 20 20Subtotal 578 656 862Mobilization (2%) 12 13 17Construction Cost Estimate 590 669 879Other Project Costs (22%) 130 147 194Contingency (20%) 144 163 215Subtotal 864 979 1,288Inflation to Mid-Point Construction 150 170 224

Total Project Cost 1,014 1,149 1,512

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61

Construction Schedule

Activity 2005 2006 2007 2008 2009 2010Middle River IntakeOld River IntakeDam ConstructionDelta-LV PipelineDelta Pump StationLV-SBA Pipeline & PumpsRecreation Facilities

Interim water supply from Middle River during dam construction

Page 62: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

62

Questions and Discussion

• Facilities and Costs– Delta Intakes– Pumps and Pipelines– Dam and Watershed– Project Costs & Schedule

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63

Available Information

• On project web site: www.lvstudies.com• In libraries and city offices in CCWD service area

– See web site for list of locations• On CD by request

Page 64: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

64

Contact Information

Marguerite NaillonProject ManagerCALFED Los Vaqueros Reservoir Expansion Studies2300 Stanwell DriveP.O. Box H2OConcord, CA 94524Phone: (925) 688-8018email: [email protected]

www.lvstudies.com

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65

Next Steps

• Comments on Today’s Discussion– Due February 14th by e-mail or regular mail

• Future Workshops (see handout with schedule & locations)

– Early March -- Partners, Benefits, and Payments -- Value of benefits and institutional issues

– Mid-April -- Environmental Effects & Mitigation -- Strategies for addressing potential adverse effects

– Late May -- Summary and Response to Comments -- Review of CCWD Principles and answers to comments and issues

Page 66: Part 1 Operations, Facilities & Costs January 28 -- February 4, 2003

Information Available in March 2003

PARTNERS, BENEFITS & PAYMENTS

Reimbursement - Amount other partners would need to reimburse CCWD for shared facilities

Benefits - Value of benefits for CCWD and potential partners (water quality, reliability, environmental, other)

Institutional - Models for how other similar projects are owned and operated by participating agencies

Financing - Financing costs and methods

PARTNERS, BENEFITS & PAYMENTS

Reimbursement - Amount other partners would need to reimburse CCWD for shared facilities

Benefits - Value of benefits for CCWD and potential partners (water quality, reliability, environmental, other)

Institutional - Models for how other similar projects are owned and operated by participating agencies

Financing - Financing costs and methods

Early March