Fugro Consultants, Inc. Revision 1 - pge.com · 100-foot offset bins Mean bin residual Median Bin residual Residual fractal range Offset (feet) Note: 9,172,512 first break picks:

$Page 1: Fugro Consultants, Inc. Revision 1 - pge.com · 100-foot offset bins Mean bin residual Median Bin residual Residual fractal range Offset (feet) Note: 9,172,512 first break picks:$
Project Organizational Chart

DCPP FOUNDATION VELOCITY REPORT

Pacific Gas and Electric Company Figure 1-1

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PGEQ-PR-16Revision 1

Fugro Consultants, Inc.Project No. 04.79225400 2012 3D Onshore Seismic Survey Report

PG&E GeosciencesQA Program

DCPP QA andDCPP Procurement

FCL QA Manager

FCL Project Manager

FCL Senior Vice PresidentNuclear Services

FCL QA Nuclear ProgramAdministrator

Offshore Technical Director Onshore Technical Director

GeophysicalSubcontractors Software V&V Equipment

CalibrationIn Process

SurveillanceGeophysical

Subcontractors

Clint EldridgeJeff Bachhuber

Technical ManagerDr. Stu Nishenko

FCL DeputyProject Manager

Bruno Protti

William GodwinMarthe Parvin

Dr. Phil Hogan Dr. Dan O’Connell

!A

!A

!A

!A

SLO2

Lower Quail Flat

Parking Lot 10

Water Tank

Parking Lot 8

DDH-B

DDH-D

DDH-C

DDH-A-2

A-A'

D-D'C-C'

B-B'

120°51'W

120°51'W

120°52'W

120°52'W

35°1

4'N

35°1

4'N

35°1

3'N

35°1

3'N

Map projection and scale: NAD 83 State Plane CA Zone V, 1:12,000

0 500 1,000ft.

0 200 400m

Imagery from NAIP (2009).

3D TomographySource and Receiver Locations



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-16

PG

EQ

-PR

-16R

evision 1Fugro C

onsultants, Inc.P

roject No. 04.79225400 2012 3D

Onshore S

eismic S

urvey Report

SAN LUIS OBISPO

COUNTY

Los Osos

AvilaBeach

San Luis Obispo

Area of Figure 2-2

!A Downhole log location (1978)

") Alternative velocity location

! Source location

! Receiver location

Profile

PA C I F I C

O C E A N

1

1

Figureextent

101

101

EXPLANATION

!A

!A

!A

!A

SLO2

Lower Quail Flat

Parking Lot 10

Water Tank

Parking Lot 8

DDH-B

DDH-D

DDH-C

DDH-A-2

A-A'

B-B'

D-D'

C-C'

120°51'W

120°51'W

120°51'30"W

120°51'30"W

35°1

3'N

35°1

3'N

35°1

2'30

"N

35°1

2'30

"N

!A!A

!A!ADHH-4

DHH-3

DHH-2DHH-1

0 500 1,000

0 100 200m

ft.



Los Osos

Avila Beach

San Luis Obispo

SAN LUIS OBISPO

COUNTY

! Containment structure centerpoint

( 100-ft spacing points along profile!A Downhole log location (1978)

") Obispo velocity location

! Source location

! Receiver location

Borehole location (Blume, 1968)!A

Profile

Boundary of 3D velocity output

PA C I F I C

O C E A N

1

Figureextent

2012 Phase 1 DCPP 3D SurveySource and Receiver Locations – Site Area


Pacific Gas and Electric Company

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-16

Figure 2-2

PG

EQ

-PR

-16R

evision 1Fugro C

onsultants, Inc.P

roject No. 04.79225400 2012 3D

Onshore S

eismic S

urvey Report

EXPLANATION

_̂

!

!

!

!DDH-B

DDH-D

DDH-C

DDH-A-2

120°51'W

120°51'W

120°51'30"W

120°51'30"W35

°13'

N

35°1

3'N

35°1

2'30

"N

35°1

2'30

"N

2012 Phase 1 DCPP 3D SurveySource and Receiver Locations Detail



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Zland receiver locations

Sigma receiver locations

Seistronix receiver locations

Vibroseis source locations

Borehole location of the 1978 investigations

DDH-C

2012 Phase 1 Data

EXPLANATION

DCPP

0 0.25 0.5mi

0 0.25 0.5km


PA C I F I C

O C E A N



Res

idua

l fra

ctal

rang

e

200-

foot

offs

et b

ins

Mea

n bi

n re

sidu

alM

edia

n B

in re

sidu

al

Offs

et (f

eet)

Not

e: 2

2700

351

first

bre

ak p

icks

: mea

n re

sidu

al =

-8.0

8 m

s, s

tand

ard

devi

atio

n =

25.2

6 m

s

Figu

re 3

-2

2011

and

201

2 Ph

ase

1Jo

int T

rave

l-Tim

e-G

ravi

ty In

vers

ion

Res

idua

l Dis

trib

utio

n

Pacif

ic Ga

s and

Elec

tric C

ompa

ny

DC

PP F

OU

ND

ATIO

N V

ELO

CIT

Y R

EPO

RT

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Res

idua

l fra

ctal

rang

e

100-

foot

offs

et b

ins

Mea

n bi

n re

sidu

alM

edia

n B

in re

sidu

al

Offs

et (f

eet)

Not

e: 9

,172

,512

firs

t bre

ak p

icks

: mea

n re

sidu

al =

-1.2

0 m

s, s

tand

ard

devi

atio

n =

8.91

ms

Figu

re 3

-3

2012

Pha

se 1

Offs

et <

15,0

00-F

oot

Tra

vel-T

ime-

Inve

rsio

nR

esid

ual D

istr

ibut

ion

Pacif

ic Ga

s and

Elec

tric C

ompa

ny

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DC

PP F

OU

ND

ATIO

N V

ELO

CIT

Y R

EPO

RT



Res

idua

l fra

ctal

rang

e

100-

foot

offs

et b

ins

Mea

n bi

n re

sidu

alM

edia

n B

in re

sidu

al

Offs

et (f

eet)

Not

e: 6

,380

,553

firs

t bre

ak p

icks

: mea

n re

sidu

al =

-0.6

6 m

s, s

tand

ard

devi

atio

n =

7.02

ms.

1,00

02,

000

3,00

0

Figu

re 3

-4Pa

cific

Gas a

nd E

lectri

c Com

pany

2012

Pha

se 1

Offs

et <

3,00

0-Fo

ot T

rave

l-Tim

e-In

vers

ion

Res

idua

l Dis

trib

utio

n

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DC

PP F

OU

ND

ATIO

N V

ELO

CIT

Y R

EPO

RT



DDH-1

0 5 10 15 20 25 30Uphole time (ms)

50

40

30

20

10

0D

epth

(fee

t)DDH-2

0 5 10 15 20 25Uphole time (ms)

50

40

30

20

10

0

Dep

th (f

eet)

DDH-3

0 5 10 15 20 25Uphole time (ms)

50

40

30

20

10

0

Dep

th (f

eet)

DDH-4

0 5 10 15 20 25 30Uphole time (ms)

50

40

30

20

10

0

Dep

th (f

eet)

Model S time

EXPLANATION

Picked S timeModel P timePicked P time

Note: See Figure 2-2 for borehole locations.

Blume and Associates (1969)Downhole Travel Times



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Sigma northeast PA

Sigma northwest PA

Sigma southwest PA

Seistronix cable 3 central east

Seistronix cable 3 northeast

Seistronix cable 3 southeast

Source

Receiver

120°51'15"W

120°51'15"W

120°51'20"W

120°51'20"W

120°51'25"W

120°51'25"W

35°1

2'45

"N

35°1

2'45

"N

35°1

2'40

"N

35°1

2'40

"N

0 50 100ft.

m0 20 40


Imagery from TetraTech (2010).

Avila Beach

Los Osos

SAN LUIS OBISPO

COUNTY

These sources are used by morethan one group of receivers

PA C I F I C

O C E A N

1

Figureextent

DCPP Source-Receiver Pairs



Phone 17

Phone 0Phone 14

Phone 0

Phone 0

Phone 23

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-16

PG

EQ

-PR

-16R

evision 1Fugro C

onsultants, Inc.P

roject No. 04.79225400 2012 3D

Onshore S

eismic S

urvey Report

EXPLANATION

40004000

6500

6500

9000

9000

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

0 50 100 150 200 250Distance (feet)

-20

0

20

40

60

80

100

Ele

vatio

n (fe

et)

2000

2500

3000

3500

4000

4500

5000

5500

6000

6500

7000

7500

8000

8500

9000

9500

10000

Cable 3 East, NE segment, 120 WET iterations, RMS error 3.7%,1D-gradient smooth initial model, Version 3.25

Velocity(ft/sec)

South North

0 50 100 150 200 250 300Distance (feet)

-20

0

20

40

60

80

Ele

vatio

n (fe

et)

Cable 3 East, NE segment, 120 WET iterations, RMS error 3.7%,1D-gradient smooth initial model, Version 3.25

05101520253035404550556065707580859095100

Seismic RayPath Count

South North

4000 4000

6500

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

0 50 100 150 200 250Distance (feet)

40

60

80

100

Ele

vatio

n (fe

et)

2000

2500

3000

3500

4000

4500

5000

5500

6000

6500

7000

7500

8000

8500

9000

9500

10000

Cable 3 East, Center Segment, 120 WET iterations, RMS error 5.6%,1D-gradient smooth initial model, Version 3.25

Velocity(ft/sec)

South North

0 50 100 150 200 250Distance (feet)

Distance (feet)

40

60

80E

leva

tion

(feet

)

05101520253035404550556065707580859095100

Cable 3 East, Center Segment, 120 WET iterations, RMS error 5.6%,1D-gradient smooth initial model, Version 3.25


South North

4000

40006500

65009000

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

0 50 100 150 200 250 300 350 400Distance (feet)

-20

0

20

40

60

80

100

Ele

vatio

n (fe

et)

2000

2500

3000

3500

4000

4500

5000

5500

6000

6500

7000

7500

8000

8500

9000

9500

10000

Cable 3 East, SE segment, 85 WET iterations, RMS error 3.0%,1D-gradient smooth initial model, Version 3.25

Velocity(ft/sec)

South North

0 50 100 150 200 250 300 350 400

-20

0

20

40

60

80

Ele

vatio

n (fe

et)

05101520253035404550556065707580859095100

Cable 3 East, SE segment, 85 WET iterations, RMS error 3.0%,1D-gradient smooth initial model, Version 3.25


South North

Notes:Scaled at 2 times vertical exaggeration. See Figure 5-1 for profile locations.

2D Rayfract Vp Models and Ray Coverage



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Seistronix northeast Seistronix central east Seistronix northeast

Sigma northeast Sigma northwest Sigma southwest

100 200 300 400 500

140

120

100

80

60

40

20

0Ti

me

(ms)

100 200 300 400 500

140

120

100

80

60

40

20

0

50 100 150 200 250 300Offset (feet)

140

120

100

80

60

40

20

0

Tim

e (m

s)

50 100 150 200 250 300

140

120

100

80

60

40

20

0

50 100 150 200

140

120

100

80

60

40

20

0

Tim

e (m

s)

50 100 150 200

140

120

100

80

60

40

20

0

100 200 300 400Offset (feet)

140

120

100

80

60

40

20

0

100 200 300 400

140

120

100

80

60

40

20

0

Tim

e (m

s)

100 200 300

140

120

100

80

60

40

20

0

Tim

e (m

s)

100 200 300

140

120

100

80

60

40

20

0

50 100 150 200 250 300 350Offset (feet)

Offset (feet) Offset (feet) Offset (feet)

140

120

100

80

60

40

20

0

Tim

e (m

s)50 100 150 200 250 300 350

140

120

100

80

60

40

20

0

DCPP Receiver-Group Offset Stacks



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1D Lateral Depth Averages of2D Vp and 3D Vp Compared with 1D Vp-Depth



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Sigma northeast

Sigma northwest

Sigma southwest

Seistronix northeast

Seistronix central east

Seistronix southeast

10 20 30 40Frequency (Hz)

0.001

0.002

0.003

0.004

0.005

Slo

wne

ss (s

/m)

FCL IMASW Version 2.1.0: First to last stack of 23 of 23 records


0.001

0.002

0.003

0.004

0.005

Slo

wne

ss (s

/m)

1000

500

333

250

200

Pha

se v

eloc

ity (m

/s)

20 40 60Frequency (Hz)

0.001

0.002

0.003

0.004

0.005

Slo

wne

ss (s

/m)


20 40 60Frequency (Hz)

0.001

0.002

0.003

0.004

0.005

Slo

wne

ss (s

/m)

1000

500

333

250

200

Pha

se v

eloc

ity (m

/s)


0.001

0.002

0.003

0.004

0.005

Slo

wne

ss (s

/m)



0.001

0.002

0.003

0.004

0.005

Slo

wne

ss (s

/m)

1000

500

333

250

200

Pha

se v

eloc

ity (m

/s)


0.001

0.002

0.003

0.004

0.005

Slo

wne

ss (s

/m)



0.001

0.002

0.003

0.004

0.005

Slo

wne

ss (s

/m)

1000

500

333

250

200

Pha

se v

eloc

ity (m

/s)


0.001

0.002

0.003

0.004

0.005

Slo

wne

ss (s

/m)



0.001

0.002

0.003

0.004

0.005

Slo

wne

ss (s

/m)

1000

500

333

250

200

Pha

se v

eloc

ity (m

/s)


0.001

0.002

0.003

0.004

0.005S

low

ness

(s/m

)



0.001

0.002

0.003

0.004

0.005S

low

ness

(s/m

)

1000

500

333

250

200

Pha

se v

eloc

ity (m

/s)

DCPP Surface-Wave Dispersion



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Southwest_PA_sigma

5 10 15 20 25 30 35 40Frequency (Hz)

200

400

600

800

1000

1200

Vel

ocity

(m/s

)

Observed phaseModel phase

Observed slow phase

0 20 40 60 80 1000

1000

2000

3000

4000

S-w

ave

velo

city

(m/s

)

0 100 200 300Depth (ft)

0

2

4

6

8

10

12

S-w

ave

velo

city

(kft/

s)

Mean of 21 best modelsMedian of 21 best modelsFinal ~1σ

Likelihood ~1σChi-squared ~1σ

Northwest_PA_sigma

6 8 10 12 14 16Frequency (Hz)

650

700

750

800

850

900

950

Vel

ocity

(m/s

)


Observed slow phase

0 20 40 60 80 100 1200

1000

2000

3000

4000

S-w

ave

velo

city

(m/s

)

0 100 200 300 400Depth (ft)

0

2

4

6

8

10

12

S-w

ave

velo

city

(kft/

s)



Northeast_PA_sigma

10 15 20 25 30 35Frequency (Hz)

500

600

700

800

900

1000

Vel

ocity

(m/s

)


Observed slow phase

0 20 40 60Depth (m)

0

1000

2000

3000

4000

S-w

ave

velo

city

(m/s

)

0 50 100 150 200 250Depth (ft)

0

2

4

6

8

10

12

S-w

ave

velo

city

(kft/

s)



Depth (m)Depth (m)

Seistronix_Cbl-3-East_South_segment

5 10 15 20 25Frequency (Hz)

350

400

450

500

550

600

Vel

ocity

(m/s

)


Observed slow phase

0 20 40 60 80Depth (m)

0

1000

2000

3000

4000

S-w

ave

velo

city

(m/s

)

0 50 100 150 200 250 300Depth (ft)

0

2

4

6

8

10

12

S-w

ave

velo

city

(kft/

s)



Seistronix_Cbl-3-East_Central_segment

0 20 40 60 80Frequency (Hz)

200

300

400

500

600

700

Vel

ocity

(m/s

)


Observed Slow Phase

0 20 40 60 80Depth (m)

0

500

1000

1500

2000

S-w

ave

velo

city

(m/s

)

0 50 100 150 200 250 300Depth (ft)

0

1

2

3

4

5

6

S-w

ave

velo

city

(kft/

s)



Seistronix_Cbl-3-East_North_segment

5 10 15 20 25 30Frequency (Hz)

300

400

500

600

700

800

Vel

ocity

(m/s

)


Observed slow phase

0 20 40 60 80 100Depth (m)

0

1000

2000

3000

4000

S-w

ave

velo

city

(m/s

)

0 50 100 150 200 250 300Depth (ft)

0

2

4

6

8

10

12

S-w

ave

velo

city

(kft/

s)



1D Vs-Depth Models FromInversion of Surface Wave Dispersion



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Seistronix northeast

0 500 1,000 1,500 2,000Vs (m/sec)

50

40

30

20

10

0D

epth

(m)

Sigma northeast

0 500 1,000 1,500 2,000Vs (m/sec)

50

40

30

20

10

0

Dep

th (m

)

Seistronix central east

0 500 1,000 1,500 2,000Vs (m/sec)

50

40

30

20

10

0

Dep

th (m

)

Sigma northwest

0 500 1,000 1,500 2,000Vs (m/sec)

50

40

30

20

10

0

Dep

th (m

)

Seistronix southeast

0 500 1,000 1,500 2,000Vs (m/sec)

50

40

30

20

10

0

Dep

th (m

)

IMASW Vs3D Vs

Sigma southeast

0 500 1,000 1,500 2,,000Vs (m/sec)

50

40

30

20

10

0

Dep

th (m

)

Comparison of IMASW Vs Depthwith GeoTomo 3D Vs Depth



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0.6 0.8 1.0 1.2 1.4 1.6 1.8Vs travel-time ratio

50

40

30

20

10

0D

epth

(fee

t)

Model is fastModel is slow

EXPLANATION

0.8 1.0 1.2 1.4 1.6 1.8 2.0Vp travel-time ratio

50

40

30

20

10

0

Dep

th (f

eet)

Model is fastModel is slow

DDH-4DDH-3DDH-2DDH-1Log mean DCPP Slower-Vp Model / Blume and

Associates (1969) Model Velocity Ratios



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GeoTomo Vs Profile A-A' sites using Vp/Vs depth relation

2000 4000 6000 8000Vs (ft/sec)

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GeoTomo Vs Profile B-B' sites using Vp/Vs depth relation

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GeoTomo Vs Profile C-C' sites using Vp/Vs depth relation

2000 4000 6000 8000Vs (ft/sec)

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Elev

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500 1000 1500 2000Vs (m/sec)

-80

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40

60

Elev

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GeoTomo Vs Profile D-D' sites using Vp/Vs depth relation

2000 4000 6000 8000Vs (ft/sec)

-300

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-100

0

100

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Elev

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500 1000 1500 2000Vs (m/sec)

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40

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)

0 5708783.8 2276047.7 92.4100 5708821.9 2275955.2 91.2200 5708859.9 2275862.8 85.9300 5708898.0 2275770.3 86.3400 5708936.0 2275677.8 90.1500 5708974.1 2275585.3 98.9600 5709012.1 2275492.8 98.5700 5709050.1 2275400.4 98.5800 5709088.2 2275307.9 89.1900 5709126.2 2275215.4 86.41000 5709164.3 2275122.9 86.31100 5709202.3 2275030.4 87.41200 5709240.4 2274938.0 87.2

Site East (ft.) North (ft.) Elev. (ft.) Site East (ft.) North (ft.) Elev. (ft.)0 5708634.0 2275986.1 59.6100 5708672.1 2275893.6 86.3200 5708710.1 2275801.1 87.0300 5708748.1 2275708.7 87.0400 5708786.2 2275616.2 87.0500 5708824.2 2275523.7 87.3600 5708862.3 2275431.2 87.2700 5708900.3 2275338.7 87.4800 5708938.4 2275246.3 87.3900 5708976.4 2275153.8 87.41000 5709014.5 2275061.3 87.01100 5709052.5 2274968.8 87.31200 5709090.6 2274876.3 87.5

900 5709318.7 2275793.7 187.3800 5709226.2 2275755.7 147.1700 5709133.7 2275717.6 116.5600 5709041.2 2275679.6 108.7500 5708948.8 2275641.6 96.7400 5708856.3 2275603.5 87.2300 5708763.8 2275565.5 87.1200 5708671.3 2275527.4 86.9100 5708578.8 2275489.4 86.30 5708486.4 2275451.3 87.0Site East (ft.) North (ft.) Elev. (ft.)

0 5708609.3 2275152.4 72.8100 5708701.8 2275190.4 87.0200 5708794.3 2275228.5 87.1300 5708886.8 2275266.5 87.0400 5708979.3 2275304.6 87.3500 5709071.7 2275342.6 95.0600 5709164.2 2275380.7 109.6700 5709256.7 2275418.7 117.0800 5709349.2 2275456.8 149.2900 5709441.7 2275494.8 199.9

Site East (ft.) North (ft.) Elev. (ft.)

Note: See Figure 2-2 for profile locations.

DCPP Vs Depth ProfilesAlong Transects A–D



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2.0E

103

4.0E

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6.0∑

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8.0E

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1.0E

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1.6E

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Elevation (m)

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2 In

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0835

2.7

2276

561.

6 14

1.2

Park

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Lot 8

57

1048

0.6

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246.

5 19

0.4

Park

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Lot 1

0 57

1076

3.7

2276

594.

0 30

8.6

Low

er Q

uail

Flat

s 57

0895

1.4

2277

201.

1 34

1.4

Wat

er T

ank

5710

589.

6 22

7746

4.1

331.

0

Site

East

(ft.)

Nor

th (f

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ev. (

ft.)

Not

e: S

ee F

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.

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DC

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1,00

02,

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3,00

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5,00

06,

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Vs (f

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100

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Elevation (feet)

500

1,00

01,

500

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/sec

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050100

Elevation (m)

SLO

2 In

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ectio

n 57

0835

2.7

2276

561.

6 14

1.2

Park

ing

Lot 8

57

1048

0.6

2274

246.

5 19

0.4

Park

ing

Lot 1

0 57

1076

3.7

2276

594.

0 30

8.6

Low

er Q

uail

Flat

s 57

0895

1.4

2277

201.

1 34

1.4

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ank

5710

589.

6 22

7746

4.1

331.

0

Site

East

(ft.)

Nor

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ev. (

ft.)

Wat

er T

ank

1458

Low

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Flat

s 12

49Pa

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1203

Park

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Lot 8

70

9SL

O2

Inte

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tion

817

Vs30

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62

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Sea

Lev

el (m

/s)

Wat

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438

Low

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Flat

s 44

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479

Park

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429

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Vs E

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Prof

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Site

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Vs=2

.45

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FUGRO CONSULTANTS, INC. Foundation Velocity Report

PR No.: PGEQ-PR-16

Revision: 1

Page A1 of A3

APPENDIX A

DCPP 3D Velocity Model Electronic Files Three DCPP 3D velocity models are provided in a text format to ensure that the files can be inspected with a standard text editor. The files contain all the geographic and velocity information as ASCII text. Coordinates are in North American Datum of 1983 (NAD 83) State Plane Zone 5 meters. Coordinates and velocities are provided in meters and meters/second.

The three files are as follows:

• slower_vp_rev3_draft_dcpp_3d_foundation_velocity_grid.txt • faster_vp_rev3_draft_dcpp_3d_foundation_velocity_grid.txt • GeoTomo_vp_rev3_draft_dcpp_3d_foundation_velocity_grid.txt

The file faster_vp_rev3_draft_dcpp_3d_foundation_velocity_grid.txt contains the faster estimates of shallow Vp velocity that are probably closer to current DCPP conditions than the file slower_vp_rev3_draft_dcpp_3d_foundation_velocity_grid.txt that contains slower shallow Vp that correspond more to a pre-construction foundation condition. A minimum Vp corresponding to a saturated soil condition (Vp=1,600 m/s) is imposed below mean sea level when original 3D Vp is <1,600 m/s. The original GeoTomo Vp in the GeoTomo_vp_rev3_draft_dcpp_3d_foundation_velocity_grid.txt file has been modified to enforce the Vp=1,600 m/s saturation condition below sea level. Cell x and y coordinates correspond to cell centers, and cell elevations refer to the top of the cell. The original GeoTomo 3D velocity model started at an elevation of 2,107 feet above mean sea level to account for topography. Consequently, all elevations fall on 2- or 7-foot steps in the right-hand digit because the vertical cell size is 5 feet. All elevations are rounded to the closest cell top elevation.

The file format uses text lines above data to document the data following the text line. To illustrate the format, the first several lines of the following file are reproduced below with line numbers preceding each line of file context:

• faster_vp_rev3_draft_dcpp_3d_foundation_velocity_grid.txt

Example first 11 lines of file format:

• Line 1: Cell-centered draft DCPP Vp and Vs velocity grid with units in meters and meters/second

• Line 2: Cell-centered NAD 83 State Plane Zone 5 lower-left origin in meters • Line 3: 1739470.8 693153.31 • Line 4: Horizontal constant-velocity cell size in meters • Line 5: 15.2400 • Line 6: Vertical constant-velocity cell size in meters


PR No.: PGEQ-PR-16

Revision: 1

Page A2 of A3

• Line 7: 1.52400 • Line 8: Number of vertical velocity profiles • Line 9: 2695 • Line 10: Number of elevation points in each velocity profile • Line 11: 124

The entire sequential lists of text lines without the intervening data are produced below:

• Cell-centered draft DCPP Vp and Vs velocity grid with units in meters and meters/second

• Cell-centered NAD 83 State Plane Zone 5 lower-left origin in meters • Horizontal constant-velocity cell size in meters • Vertical constant-velocity cell size in meters • Number of vertical velocity profiles • Number of elevation points in each velocity profile • Elevation values in meters (positive above sea level) of velocity cell tops (124

points) • Distance east from lower-left cell center to each x,y cell center in meters (2,695

points) • Distance north from lower-left cell center to each x,y cell center in meters (2,695

points) • Vp value that indicates an elevation sample is above topography • Vs value that indicates an elevation sample is above topography • Vp elevations profiles in meters/second (2,695 lines with 124 velocity values per

line) • Vs elevations profiles in meters/second (2,695 lines with 124 velocity values per

line)

The example Interactive Display Language (IDL) command set below illustrates an approach to read a DCPP 3D velocity file:

str='' ifile='slower_vp_rev3_draft_dcpp_3d_foundation_velocity_grid.txt' openr,unit1,ifile,/get_lun readf,unit1,str readf,unit1,str xorigm=0d0 yorigm=0d0 readf,unit1,xorigm,yorigm readf,unit1,str hcellsizem=0d0 readf,unit1,hcellsizem readf,unit1,str


PR No.: PGEQ-PR-16

Revision: 1

Page A3 of A3

zcellsizem=0d0 readf,unit1,zcellsizem readf,unit1,str nn=0L readf,unit1,nn readf,unit1,str nelevs=0L readf,unit1,nelevs sizm=fltarr(nelevs) readf,unit1,str readf,unit1,sizm readf,unit1,str dxm=fltarr(nn) readf,unit1,dxm readf,unit1,str dym=fltarr(nn) readf,unit1,dym vpnull=0. readf,unit1,str readf,unit1,vpnull vsnull=0. readf,unit1,str readf,unit1,vsnull vpn=fltarr(nelevs,nn) readf,unit1,str readf,unit1,vpn readf,unit1,str vsn=fltarr(nelevs,nn) readf,unit1,vsn close,unit1 free_lun,unit1

Figure A1 shows the geographic extent of the 3D foundation velocity model shown in 3D map view in Figure A2 and the depth profile location shown in Figure A3. Figures A2 and A3 illustrate how the 3D model will appear when read correctly. Figure A2 shows a FLAC3D rendering of the model topography. Figure A3 shows a 2D elevation Vs west-to-east cross section 381 m north of the south end of the model.

120°51'W

120°51'W

120°51'30"W

120°51'30"W120°52'W35

°13'

N

35°1

3'N

35°1

2'30

"N

35°1

2'30

"N

Velocity Model Location Map


Pacific Gas and Electric Company Figure A1

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0 500 1,000ft.

0 100 200m


DCPP 3D foundationvelocity model extent

Profile

Los Osos

Avila Beach

San Luis Obispo

SAN LUIS OBISPO

COUNTY

PA C I F I C

O C E A N

1

Figureextent



Ele

vatio

n (m

)

94

80

60

40

20

-20

-40

-60

-80

-90

Sea level

Note: See Figure A1 for model location.

Figure A2Pacific Gas and Electric Company


DCPP FLAC3D Model (Jigsaw Model)

PG

EQ

-PR

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evision 1Fugro C

onsultants, Inc.P

roject No. 04.79225400 2012 3D

Onshore S

eismic S

urvey Report

Vs (m/s)

West

Note: See Figure A1 for model location.

Contour of Gp Extra 5

East

Figure A3Pacific Gas and Electric Company


Vs Profile @ Y of 381 m(South End of Plant Area)

PG

EQ

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onsultants, Inc.P

roject No. 04.79225400 2012 3D

Onshore S

eismic S

urvey Report


PR No.: PGEQ-PR-16

Revision: 1

APPENDIX B DCPP VS-DEPTH PROFILES ALONG TRANSECTS A-D

(Total 4-Figures)

CENTRAL COASTAL CALIFORNIA SEISMIC IMAGING PROJECT

Pacific Gas and Electric Company Figure B-1



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GeoTomo Vs Profile A-A' sites using Vp/Vs depth relation

2000 4000 6000 8000Vs (ft/sec)

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Ele

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500 1000 1500 2000Vs (m/sec)

-80

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vatio

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)

0 5708783.8 2276047.7 92.4100 5708821.9 2275955.2 91.2200 5708859.9 2275862.8 85.9300 5708898.0 2275770.3 86.3400 5708936.0 2275677.8 90.1500 5708974.1 2275585.3 98.9600 5709012.1 2275492.8 98.5700 5709050.1 2275400.4 98.5800 5709088.2 2275307.9 89.1900 5709126.2 2275215.4 86.41000 5709164.3 2275122.9 86.31100 5709202.3 2275030.4 87.41200 5709240.4 2274938.0 87.2


DCPP Vs Depth Profiles Along Transect A-A'


DCPP Vs Depth Profiles Along Transect B-B'





GeoTomo Vs Profile B-B' sites using Vp/Vs depth relation

2000 4000 6000 8000Vs (ft/sec)

-300

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Ele

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500 1000 1500 2000Vs (m/sec)

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Site East (ft.) North (ft.) Elev. (ft.)0 5708634.0 2275986.1 59.6100 5708672.1 2275893.6 86.3200 5708710.1 2275801.1 87.0300 5708748.1 2275708.7 87.0400 5708786.2 2275616.2 87.0500 5708824.2 2275523.7 87.3600 5708862.3 2275431.2 87.2700 5708900.3 2275338.7 87.4800 5708938.4 2275246.3 87.3900 5708976.4 2275153.8 87.41000 5709014.5 2275061.3 87.01100 5709052.5 2274968.8 87.31200 5709090.6 2274876.3 87.5

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DCPP Vs Depth Profiles Along Transect C-C'





GeoTomo Vs Profile C-C' sites using Vp/Vs depth relation

2000 4000 6000 8000Vs (ft/sec)

-300

-200

-100

0

100

200

Ele

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500 1000 1500 2000Vs (m/sec)

-80

-60

-40

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60

Ele

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900 5709318.7 2275793.7 187.3800 5709226.2 2275755.7 147.1700 5709133.7 2275717.6 116.5600 5709041.2 2275679.6 108.7500 5708948.8 2275641.6 96.7400 5708856.3 2275603.5 87.2300 5708763.8 2275565.5 87.1200 5708671.3 2275527.4 86.9100 5708578.8 2275489.4 86.30 5708486.4 2275451.3 87.0Site East (ft.) North (ft.) Elev. (ft.)

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DCPP Vs Depth Profiles Along Transect D-D'





GeoTomo Vs Profile D-D' sites using Vp/Vs depth relation

2000 4000 6000 8000Vs (ft/sec)

-300

-200

-100

0

100

200

Ele

vatio

n (f

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500 1000 1500 2000Vs (m/sec)

-80

-60

-40

-20

0

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40

60

Ele

vatio

n (m

)

0 5708609.3 2275152.4 72.8100 5708701.8 2275190.4 87.0200 5708794.3 2275228.5 87.1300 5708886.8 2275266.5 87.0400 5708979.3 2275304.6 87.3500 5709071.7 2275342.6 95.0600 5709164.2 2275380.7 109.6700 5709256.7 2275418.7 117.0800 5709349.2 2275456.8 149.2900 5709441.7 2275494.8 199.9


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Documents

Fugro Consultants, Inc. Revision 1 - pge.com · 100-foot offset bins Mean bin residual Median Bin residual Residual fractal range Offset (feet) Note: 9,172,512 first break picks: