ML14260A037

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Central Coastal California Seismic Imaging Project (Cccsip) Chapter 3, GEO.DCPP.TR.14.02 R0 Figures 09-02-14 Compressed
ML14260A037
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Site: Diablo Canyon  Pacific Gas & Electric icon.png
Issue date: 09/10/2014
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Estero Bay San Luis Obispo Bay Point Sal Point Buchon DCPP

-120°30'

-120°30'

-120°40'

-120°40'

-120°50'

-120°50'

-121°0'

-121°0' 35°20' 35°20' 35°10' 35°10' 35°0' 35°0' 34°50' 34°50' DCPP Figure extent Regional Map of 3D LESS Survey Areas 1-1 Map projection and scale: WGS 84 / UTM Zone 10N,1:380,160

+/-

0 5

10 mi.

0 5

10 km File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_1-1_RegionalMapof3D.mxd; Date: 07/27/2014; User: Ranon Dulberg, Fugro; Rev. 3 OFFSHORE LESS STUDIES Figure Pacific Gas and Electric Company Note: See Plate 1 for details.

Sources:

- Fault locations from Jennings and Bryant (2010) and PG&E (2011).

- PG&E DEM compilation v2013.07.

EXPLANATION Thrust fault Fault approximated Fault concealed 120 m isobath 2010/2011 3D high-resolution survey extent Point Sal Point San Luis Point Sal Fault well located Normal fault 2011 3D high-resolution survey extent 2012 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company File path: S:\\1005\\033\\GIS\\Figures\\Figure_01-02.mxd; Date: 07/07/2014; User: Jereme Chandler, LCI; Rev.1 SAN LUIS OBISPO BAY San Andreas (Cholame) rev San Juan Lo DCPP S

A H

P V

M L

-120°0'

-120°0'

-120°30'

-120°30'

-121°0'

-121°0' 35°30' 35°30' 35°0' 35°0' 34°30' Map projection and scale: WGS 84 / UTM Zone 10N,1:750,000 Figure extent Tectonic Setting 1-2 OFFSHORE LESS STUDIES Figure Santa Lucia Bank Fault Zone Figure extent Sources:

- PG&E (1988, 2011, 2013)

- Regional tectonic sketch map from Hanson et al. (2004)

- AMEC (2011)

EXPLANATION Fault: solid where well located, dashed where approximately located, dotted where concealed, short dashed where inferred, queried where existence is uncertain.

?

Structural blocks within the Los Osos domain Boundary outlining Los Osos domain Uplifted structural blocks within the Los Osos domain, outlined by thick gray line A

C H

L M

P S

V

= Casmalia

= Cambria

= Solomon Hills

= Los Osos

= Santa Maria Valley

= Purisima

= San Luis/Pismo

= Vandenberg/Lompoc 0

10 20 mi.

0 20 40 km Diablo Canyon Power Plant site Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company File path: S:\\1005\\033\\GIS\\Figures\\Figure_01-03.mxd; Date: 07/07/2014; User: Alex Remar, LCI; Rev.1 SAN LUIS OBISPO BAY Los Osos Fault Zone Point Sal Hosgri Fault Zone Shoreline Fault Los Osos Fault Zone Oceano Fault Wilmar Avenue Fault Casmalia Fault Oceanic-West Huasna Fault DCPP

-120°30'

-120°30'

-120°45'

-120°45'

-121°0'

-121°0'

-121°15' 35°30' 35°30' 35°15' 35°15' 35°0' 35°0' Santa Barbara Cambria Port San Luis DCPP Map projection and scale: WGS 84 / UTM Zone 10N,1:400,000 Figure extent Regional Seismicity 1-3 OFFSHORE LESS STUDIES EXPLANATION Figure 0

4 8

mi.

0 10 20 km Note: Quaternary fault traces compiled from Lettis and Hall (1994),

Lettis et al. (2004), AMEC (2011), PG&E (2013), and this study.

Sources:

- Relocated earthquake data from Hardebeck (2012).

- Project DEM compilation v2013.01.

Fault, solid where well located, dashed where approximately located, dotted where inferred, queried where existence uncertain.

Earthquake Data Depth (km)

Magnitude 0.0-1.9 2.0-3.9 4.0-5.9 6.0-7.9 8.0-9.9 10.0-11.9 12.0-13.9 14.0 +

0.0-0.9 1.9-2.9 1.0-1.9 2.9-4.1

?

Ch3.GEO.DCPP.TR.14.02 R0

File path: S:\\1005\\033\\GIS\\Figures\\Figure_01-04.mxd; Date: 07/07/2014; User: Jereme Chandler, LCI; Rev.1 S A N L U I S O B I S P O B A Y E S T E R O B A Y Willow Creek-Frontal Pacific Ocean Morro Bay Toro Creek Western Irish Hills Combined Los Osos Creek Chorro Creek Old Creek Morro Creek Pismo Creek Arroyo Grande Creek Watershed San Luis Obispo Creek Oso Flaco Creek San Antonio Cuyama Santa Maria DCPP Santa Barbara Arroyo Grande

-119°30'

-119°30'

-120°0'

-120°0'

-120°30'

-120°30'

-121°0'

-121°0' 35°30' 35°30' 35°0' 35°0' 34°30' 34°30' Map projection and scale: WGS 84 / UTM Zone 10N,1:591,000 EXPLANATION DCPP San Jose Los Angeles Arroyo Grande San Francisco Santa Barbara Figure extent Regional Physiography Map Showing Boundaries of Watersheds That Drain into San Luis Obispo and Estero Bays 1-4 OFFSHORE LESS STUDIES DEM Source: NGC Coastal Relief Model Vol. 06 Shaded Relief Images (2003) 0 6

12 mi.

0 12 24 km Pacific Gas and Electric Company Figure Ch3.GEO.DCPP.TR.14.02 R0

Ma Age Age Rock units Horizons Rock units Offshore Santa Maria Basin Onshore Santa Maria Basin Foxen Mudstone Ma 0-0.0115 marine silt and clay Dunes and alluvium Marine terraces, Orcutt Sand, and older alluvium Holocene Holocene Pleistocene unnamed Careaga sandstone early and late Pliocene early Pliocene and late Miocene Pleistocene late Pliocene early Pliocene late Miocene middle Miocene early Miocene late Miocene middle Miocene early Miocene Eocene and Paleocene Eocene and Paleocene Point Sal Formation Point Sal Formation Obispo Formation Obispo Formation Lospe Formation Tranquillon Volcanics Great Valley Sequence, Coast Range ophiolite, and Franciscan Complex primarily Franciscan Complex, with possible remnants of Great Valley Sequence and Coast Range ophiolite reported in a few wells remnants of sedimentary and volcanic rocks Cretaceous and Jurassic Cretaceous and Jurassic late Pliocene unnamed nonmarine Sisquoc Formation (upper part)

Sisquoc Formation (lower part)

Sisquoc Formation Monterey Formation Monterey Formation 0-0.0115 2.5 6.0 11.5 16.0 3.5 23.0 34-65 65+

2.5 6.7 11.5 16.8

~17.5-23.0 34-65 65+

~5.1-5.5 H20 H10 H30 H40 H45 H48 T05 Rock units Pismo Basin 0-0.0115 Marine terraces and older alluvium Dunes and alluvium late Miocene middle Miocene early Miocene Oligocene Obispo Formation Vaqueros Formation Rincon Formation Cretaceous and Jurassic Monterey Formation

~4.2 9.0-10.4 10.5-11.4 15.3-15.5 23-34 65+

Franciscan Complex (includes serpentine) late Pliocene Pleistocene early Pliocene Age Ma Pismo Formation (lower)

Pismo Formation (upper)

Miguelito Member Edna Member Gragg Member Belleview Member Squire Member Holocene

?

?

ELP NTN Modified from Willingham et al. (2013)

Based on Hall (1973) and PG&E (2011)

TM TPM

?

?

?

?

~2.7-3.5 3.0-3.3

?

File path: S:\\1005\\033\\GIS\\Figures\\Figure_1-5.ai; Date: 04/17/2014; User: Alex Remar, LCI; Rev.1 1-5 Generalized Stratigraphic Columns for the Project Study Areas OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure

- Stratigraphic columns for Santa Maria Basin from Willingham et al. (2013).

- Stratigraphic column for Pismo Basin from PG&E (2011) and Hall (1973).

EXPLANATION

1. Fault traces modified from the Uniform California Earthquake Rupture Forecast, version 3 (UCERF3), fault model version 3.1 (Dawson et al.,

2012, draft received from author). Generalized trends of active contrac-tional structures in the offshore and the offshore Santa Lucia Bank fault are based on Lettis et al. (2004), plate 1.

2. Fault names in sketch map are as follows: SAF, San Andreas Fault; RF, Rinconada fault; SJ, San Juan fault; MW, Morales (west) fault; LP, La Panza fault; SC, South Cuyama fault; EH, East Huasna fault; OWH, Oceanic-West Huasna fault; SS, San Simeon fault; HFZ, Hosgri fault zone; LOF, Los Osos fault; WAF, Wilmar Avenue fault; LPF, Little Pine fault; OF, Oceano fault; SL, Shoreline fault; CF, Casmalia fault; LHF, Lions Head fault; SYR, Santa Ynez River fault; SYW, Santa Ynez (west) fault; SLBF, Santa Lucia Bank fault.
3. Time scales in stratigraphic columns are not linear.

Approximate boundary of Tertiary basin Unconformities Notes:

Sources:

Tertiary Basins and Simplified Regional Faults

{

{

H10 - H48 and T05 NTN = Near top of Neogene unconformity ELP = Early-late Pliocene unconformity TM = Top of Miocene TPM = Top of Pre-Miocene basement This study Willingham et al. (2013) 2.5

?

Ch3.GEO.DCPP.TR.14.02 R0

6e 6e 6c 6c

-160

-120

-80

-40 0

0 50 100 150 200 250 300 350 400 450 500 40 Sea Level (m)

Age (ka)

MIS 3 MIS 3 MIS 5 MIS 5 MIS 7 MIS 7 MIS 9 MIS 9 MIS 11 MIS 11 MIS 6 MIS 6 MIS 8 MIS 8 MIS 12 MIS 12 MIS 10 3

44 5a 5a 5c 5c 5e 5e 6b 6b

?

?

?

?

?

?

~625 ka Alternative Age Models for Unconformities in Study Area Minimum Maximum Preferred Last Glacial Maximum (MIS 2)

Modern Sea Level Waelbroeck et al.

MIS MIS Notes:

1. Waelbroeck et al. (2002) use regressions established from relative sea-level (RSL) coral terrace data and benthic foraminifera oxygen isotope data calibrated to sea temperature data from the North Atlantic and equatorial Pacific to create a composite RSL curve for past climatic cycles. Shaded region is confidence interval.
2. Lisiecki and Raymo (2005) use 57 globally distributed 18O records to compile a 5.3 Myr record. Scaled to sea level by Carlson (2008).

Marine oxygen isotope stage Marine oxygen isotope substage Lisiecki and Raymo (2005)

EXPLANATION 2

1 UNCONFORMITIES UNCONFORMITIES H10 H20 H30 H40 6c 6c File path: S:\\1005\\033\\GIS\\Figures\\Figure_01-06.ai; Date: 04/17/2014; User: Jereme Chandler, LCI; Rev.1 Pacific Gas and Electric Company Figure Age Model for Quaternary Unconformities in Study Areas 1-6 OFFSHORE LESS STUDIES Ch3.GEO.DCPP.TR.14.02 R0

File path: S:\\1005\\033\\GIS\\Figures\\Figure_01-07.mxd; Date: 07/11/2014; User: Jereme Chandler, LCI; Rev.1 1-7 Excerpt of Profile PBS-23 Showing Key Regional Unconformities Offshore of Point Buchon OFFSHORE LESS STUDIES (a)

(b)

(c)

Sources:

- USGS seismic-reflection data (Sliter et al., 2009).

- Fugro 3D and 2D seismic-reflection data (2012).

- Project DEM compilation v2013.01.

EXPLANATION Fault: solid where well located, dashed where approximately located, dotted where inferred, queried where existence uncertain.

Notes:

1. See Figure 1-1 for location of study area.
2. Depth values on seismic profile assume a velocity of 1,600 m/s.
3. In profiles, thin black lines are unassigned faults, heavy black lines are named faults.
4. Faults in location map described on Plate 1a.

Pacific Gas and Electric Company Figure Unconformity H40 Location of seismic profile USGS survey trackline Fugro 3D survey extent Fugro 2D survey trackline Seafloor Unconformity H10 Unconformity H30 Top of pre-Quaternary rock DCPP Figure extent in blue Figure extent in blue Ch3.GEO.DCPP.TR.14.02 R0

Figure Pacific Gas and Electric Company File path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\ai\\Figure_1-8_Channel_Formation.ai; Date: 04/20/2014; User: Bryan Bergkamp, Fugro; Rev.1 Schematic Model of Channel Formation 1-8 OFFSHORE LESS STUDIES Notes:

1. Sea-level curve modified from Waelbroeck et al. (2002). See Figures 1-6, 6-52, and 7-45.
2. See Section 1.2.9.1 for discussion of alternative age models.

360 340

-40

-60

-80

-100

-120

-140 10 Global Sea Level Relative to Present (meters)

Age (ka)

Initial channel incision

~350 ka Channel cutting starts

~100 m Dropping Erosion 350

-40

-60

-80

-100

-120

-140 10 330 Global Sea Level Relative to Present (meters)

Age (ka)

Full channel incision 350-335 ka Peak erosion at 342 ka Lowstand 127 m (110-140 m)

MIS 10 Lowstand 123 m (110-136 m)

LGM Erosion 350 0

-20

-40

-60

-80 20 40

-100

-120 9e 330 Global Sea Level Relative to Present (meters)

Age (ka)

Channel infilling and shelf sedimentation Rising MIS 9e (~335 ka)

Seafloor ~50 m Sea level Bedrock Channel fill ~335 ka (342-335 ka)

~50 m MIS 5e (~125 ka)

Sea level MIS 1 (~12 ka)

Sea level Shelf deposition

~330 ka (335-330 ka)

Channel filling 160 140

-60

-80

-100

-120

-140

-160 6b 6c Global Sea Level Relative to Present (meters)

Age (ka)

Initiation of channel fill cutting or new channel incision elsewhere Dropping

~110 m and/or

~156 ka Channel cutting starts Erosion

-60

-80

-100

-120

-140

-160 6b 6c 160 140 Age (ka)

Global Sea Level Relative to Present (meters)

Full channel incision and/or 156-132 ka Peak erosion at 138 ka Lowstand 130 m (113-140 m)

MIS 6b Erosion and/or filling Channel reoccupation New channel 5e 0

-20

-40

-60

-80 20 40

-100

-120 140 120 Age (ka)

Global Sea Level Relative to Present (meters)

Channel infilling and shelf sedimentation Rising and/or Seafloor ~50 m Channel fill ~135 ka (138-130 ka)

Shelf deposition Channel filling

-40

-60

-80

-100

-120

-140

-160 20 40 2

Age (ka)

Initiation of channel fill cutting or new channel incision elsewhere

~100 m Dropping Global Sea Level Relative to Present (meters)

~28 ka Channel cutting starts Erosion

-40

-60

-80

-100

-120

-140

-160 20 40 2

Age (ka) 28-15 ka Peak erosion at 19 ka Channel reoccupation and fill cutting Global Sea Level Relative to Present (meters)

Erosion 0

-20

-40

-60

-80

-100

-120 30 10 1

Age (ka)

Channel fill ~15 ka (15-10 ka)

Seafloor ~50 m Rising Channel infilling and shelf sedimentation Global Sea Level Relative to Present (meters)

Holocene shelf deposition Channel filling Holocene shelf sediments Nearshore and coastal floodplain deposits (a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

MIS 10 MIS 2 MIS 6 Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure Point Sal 1240 Uninterpreted Interpreted Example of Nested Channels 1-9 OFFSHORE LESS STUDIES EXPLANATION Note: Depth values on seismic profile assume a velocity of 1,600 m/s.

Seafloor H10 unconformity H30 unconformity Early-late Pliocene/near top of Neogene unconformity (ELP/NTN)

Nested channel margin Base of channel complexes Line Location File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_1-9_NestedChannels.mxd; Date: 6/9/2014; User: Ranon Dulberg, Fugro; Rev.3 (b)

(a) 2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Geophysical Service, Inc. 1980 Line 97

-120°40'

-120°40'

-120°50'

-120°50'

-121°0'

-121°0'

-121°10'

-121°10'

-121°20'

-121°20' 35°30' 35°30' 35°20' 35°20' 35°10' 35°10' 35°0' 35°0' 34°50' 34°50' DCPP Source: PG&E DEM compilation v2013.07.

Figure extent Regional Trackline Map from Legacy Archive Data 1-10 EXPLANATION Fugro 3D 2011-2012 Fugro 2010-2012 USGS S-6-09-SC USGS S-6-08-SC USGS L-4-90-SC PG&E FLEC 1987 COMAP 1986 DSL 1986 Nekton 1986 GSI 1985 NEKTON 1985 W-38-83-SC USGS W-32-82-SC GSI 1980 USGS H-14-79-SC USGS L-5A-79-NC USGS W-22-79-SC USGS W-10-78-SC USGS W-12-76-SC USGS W-5-75-SC USGS W-4-74-SC Aquatronics 1974 PXP Price Canyon +/-

0 5

10 mi.

0 10 20 km Map projection and scale: WGS 84 / UTM Zone 10N,1:450,000 File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_1-10_LegacyArchive.mxd; Date: 6/9/2014; User: Ranon Dulberg, Fugro; Rev. 3 OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure Point Sal Point Conception Ch3.GEO.DCPP.TR.14.02 R0

OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure Magnetic Data 1-11 Map projection and scale: WGS 84 / UTM Zone 10N,

1) Estero Bay
2) San Luis Obispo Bay
3) Point Sal Point Buchon Coastline Magnetic survey trackline High-resolution aaromagnetic survey extent DCPP

-120°40'

-120°40'

-120°50'

-120°50'

-121°0'

-121°0' 35°20' 35°20' 35°10' 35°10' 35°0' 35°0' 34°50' 1:300,000

+/-

0 4

8 mi.

0 5

10 km DCPP Figure extent File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_1-11_MagneticData.mxd; Date: 6/9/2014; User: Ranon Dulberg, Fugro; Rev. 3 Sources:

Fault locations from Jennings and Bryant (2010) and PG&E (2011).

PG&E DEM compilation v2013.07.

Note: See Plate 1 for details.

EXPLANATION Thrust fault Fault concealed Fault approximated 2011 3D high-resolution survey extent 2012 3D high-resolution survey extent 2010/201 3D high-resolution survey extent Point Sal Fault well located Normal fault Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure OFFSHORE LESS STUDIES 2-1 File path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\ai\\Figure_2-1_LaybackDiagram.ai; Date: 05/15/2014; User: Bryan Bergkamp, Fugro; Rev.3 P-Cable 3D Survey Streamer Layout (Schematic Layback Diagram)

Used in 2012 Data Collection Navigation Antenna (14 Streamers)

(8 channels @ 6.25 m group interval)

Tow Depth 1.5-2.5 m Triple-Plate Boomer GPS unit Compasses were embedded in each junction box at the head of each streamer and at the end of streamers 1, 2, 4, 5, 7, 8, 11, 3, and 14 ( ).

GPS units were located on paravanes, buoys, and on the triple-plate boomer sled.

A 14-streamer spread was used during survey.

Not to scale.

N S

E W

Navigation Antenna 8 channel GeoEel hydrophone Triple-Plate Boomer Tow Rope Tow Rope Signal Cable Port Paravane Starboard Paravane 50 m (8 channels @ 6.25 m) 71.5 m variable variable 6.25 m (typ.)

14 Sounder Transducer GPS GPS 1

13 12 11 10 9

8 7

6 2

3 5

4 N

S E

W N

S E

W N

S E

W N

S E

W N

S E

W N

S E

W N

S E

W N

S E

W N

S E

W N

S E

W N

S E

W N

S E

W N

S E

W N

S E

W N

S E

W N

S E

W N

S E

W N

S E

W N

S E

W N

S E

W N

S E

W N

S E

W N

S E

W Buoy with GPS Buoy with GPS 123.6 m GPS unit P-Cable P-Cable Navigation Reference Point Notes:

1.

2.

3.

4.

Navigation Reference Point Ch3.GEO.DCPP.TR.14.02 R0

-58

-35

-12

-81 Signal Frequency (Hz)

Amplitude (dB) 500 1,500 1,000 0

=

4 = x 4

=

x 4 = 1600 m/s 200 Hz x 4 = 2 m Calculated Vertical Resolution VR = vertical resolution, DF = dominant frequency, v = velocity, = wavelength, and T = period Dominant Frequency 200 Hz Amplitude Frequency Spectrum Pacific Gas and Electric Company Figure OFFSHORE LESS STUDIES 2-2 File path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\ai\\Figure_2-2_FrequencySpectrum.ai; Date: 05/15/2014; User: Bryan Bergkamp, Fugro; Rev.3 Frequency Spectrum for 2D/3D Seismic Source Ch3.GEO.DCPP.TR.14.02 R0

2D Processing Flow CMP Stack Predictive Deconvolution (Multiple Attenuation)

Raw Data Recovery Amplitude Gain Deconvolution Predictive Static Correction Velocity Analysis Geometry Definition Low/High Cut Filter Data Reformatting Trace Edits Post-Stack Kirchhoff Time Migration Post-Stack FK Filter (Noise Reduction)

Post-Stack FX Filter (Noise Reduction)

Zero-Phase Amplitude Conversion Final Bandpass Filter Application Automatic Gain Control Application Navigation Merge Output to SEG-Y Pacific Gas and Electric Company Figure OFFSHORE LESS STUDIES 2-3 File path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\ai\\Figure_2-3_2DProcessingFlow.ai; Date: 05/15/2014; User: Bryan Bergkamp, Fugro; Rev.3 Flow Chart Showing Procedures and Steps Undertaken in the Processing of the 2D Data Ch3.GEO.DCPP.TR.14.02 R0

3D Processing Flow Note: All quality control (QC) assessments were made prior to advancing to the next step of processing.

QC QC QC QC QC QC QC Transcription Navigation Merge Raw Data Shot and Trace Edits Low Cut Filter Recording Delay Gun and Cable Statics Gain Recovery Static Correction QC QC QC QC QC QC Signature Deconvolution Surface-Related Multiple Attenuation Velocity Analysis Binning Time-Frequency Denoise Surface Wave Noise Attenuation Tidal Static Correction Matching Swell Noise Attenuation QC QC QC QC QC QC QC QC Interpolation Migration Velocity Analysis 3D Kirchhoff Pre-Stack Time Migration Mute Time-Variant Filter Final PSTM 3D Volume Sort into Offset Planes Stack QC QC QC QC Pacific Gas and Electric Company Figure OFFSHORE LESS STUDIES 2-4 File path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\ai\\Figure_2-4_3DProcessingFlow.ai; Date: 05/15/2014; User: Bryan Bergkamp, Fugro; Rev.3 Flow Chart Showing Procedures and Steps Undertaken in the Processing of the 3D Data Ch3.GEO.DCPP.TR.14.02 R0

-120°42'

-120°42'

-120°44'

-120°44'

-120°46'

-120°46' 35°8' 35°8' 35°6' 35°6' Point San Luis DCPP

-120°42'

-120°42'

-120°44'

-120°44'

-120°46'

-120°46' 35°8' 35°8' 35°6' 35°6' Figure extent Comparison Plot of Seismic Amplitude and Smoothed Similarity Time Slices at 0.08 s TWTT Map projection and scale: WGS 84 / UTM Zone 10N,1:40,000

+/-

0 0.5 1

mi.

0 1

2 km (a) Amplitude time slice at 0.08 s (b) Smoothed similarity time slice at 0.08 s 2-5 OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_2-5_Similarity_Comparison.mxd; Date: 7/15/2014; User: R. Dame, Fugro; Rev. 3 EXPLANATION 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

-120°42'

-120°42'

-120°44'

-120°44'

-120°46'

-120°46' 35°8' 35°8' 35°6' 35°6' DCPP

-120°42'

-120°42'

-120°44'

-120°44'

-120°46'

-120°46' 35°8' 35°8' 35°6' 35°6' Figure extent Comparison Plot of Seismic Amplitude and Smoothed Dip of Maximum Similarity Time Slices at 0.08 s TWTT Map projection and scale: WGS 84 / UTM Zone 10N,1:40,000

+/-

0 0.5 1

mi.

0 1

2 km (a) Amplitude time slice at 0.08 s (b) Smoothed dip of maximum similarity time slice at 0.08 s 2-6 OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_2-6_Dip_Similarity_Comparison.mxd; Date: 7/15/2014; User: R.Dame, Fugro; Rev. 3 Point San Luis EXPLANATION 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

DCPP Figure extent in blue File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-01a.mxd; Date: 07/11/2014; User: Alex Remar, LCI; Rev.1 6-1a Excerpt of Profile PBS-36 Showing Transition from Continental Slope to Continental Shelf Environment OFFSHORE LESS STUDIES (a)

(b)

Sources:

- USGS seismic-reflection data (Sliter et al., 2009).

- Fugro 2D and 3D seismic-reflection data (2012).

EXPLANATION Location of seismic profile Fugro 3D survey extent Fugro 2D survey trackline USGS survey trackline Notes:

1. See Figure 1-1 for location of study area.
2. Depth values on seismic profile assume a velocity of 1,600 m/s.
3. Faults in location map described on Plate 1a.

Pacific Gas and Electric Company Figure Figure extent in blue Ch3.GEO.DCPP.TR.14.02 R0

DCPP Figure extent in blue File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-01b.mxd; Date: 07/11/2014; User: Alex Remar, LCI; Rev.1 6-1b Excerpt of Profile PBS-36 Showing Transition from Continental Slope to Continental Shelf Environment OFFSHORE LESS STUDIES (c)

(d)

Sources:

- USGS seismic-reflection data (Sliter et al., 2009).

- Fugro 2D and 3D seismic-reflection data (2012).

EXPLANATION Location of seismic profile Fault, solid where well located, dashed where approximately located, dotted where inferred, queried where existence uncertain.

?

Fugro 3D survey extent Fugro 2D survey trackline USGS survey trackline Notes:

1. See Figure 1-1 for location of study area.
2. Unconformity T05 marks a transition in style of sedimentation.

Below unconformity T05, parallel reflectors record relatively uniform sedimentation in a continental slope environment.

Above unconformity T05, a succession of unconformable sequences records episodic deposition and erosion, consistent with deposition in or near a continental shelf environment during periods of repeated sea-level fluctuations.

3. Depth values on seismic profile assume a velocity of 1,600 m/s.
4. Faults in location map described on Plate 1a.

Seafloor Unconformity H20 Unconformity H30 Unconformity H35 Unconformity H32 Unconformity H10 HST =

Highstand systems tract TST =

Transgressive systems tract LST =

Lowstand systems tract Unconformity H40 Unconformity H42 Unconformity H45 Unconformity H48 Unconformity T05 Other unconformities Channel DBw Pacific Gas and Electric Company Figure Figure extent in blue Ch3.GEO.DCPP.TR.14.02 R0

Preferred Maximum Preferred Preferred

~3.5-2.7 ka Minimum Minimum Maximum Maximum Minimum PA1003 PA1003 3

3.5 4

4.5 5

Brunhes Matuyama Jaramillo Extent shown on Figure 1-6 100 kyr cycles Mid-Pleistocene Transition 41 kyr cycles Maximum lowstand prior to MIS 16 Modern Sea Level Magnetic Reversals 3

3.5 4

4.5 5

200 250 300 350 100 150 50 400 450 500 550 600 650 700 750 800 850 900 950 1000 1050 1100 1150 1200 1250 1300 1350 1400 1450 1500 1550 1600 1650 1700 1750 1800 0

1 3

2 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 23 25 27 28 29 31 33 35 37 39 41 43 45 47 49 51 53 55 56 57 59 61 63 Age Model for Unconformity T05-Onset of Shelf Deposition/Erosion West of HFZ in Estero Bay Study Area Stratigraphic Age Model for Channel DBw-Ee1-De Climatic Age Model for Channel DBw-Ee1-De Lisiecki and Raymo (2005)

Notes:

1. Lisiecki and Raymo (2005) use 57 globally distributed 18O records to compile a 5.3 Myr record of sea-level fluctua-tions.
2. Timing of mid-Pleistocene transition from Bintanja and van de Wal (2008).
3. Age models for piercing points are discussed in Section 6.

File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-19.ai; Date: 05/08/2014; User: Jereme Chandler, LCI; Rev.1 6-2 Age Model for Unconformity T05 and Channel DBw-Ee1-De OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-03.mxd; Date: 07/08/2014; User: Alex Remar, LCI; Rev.1 11006 10001 HF2002 HF2001 HF1013

-200

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-120

-90

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-200

-120°57'

-120°57'

-121°0'

-121°0' 35°21' 35°21' 35°18' 35°18' Map projection and scale: WGS 84 / UTM 10N,1:65,000 Figure extend DCPP Los Osos Port San Luis Figure extent Migration of the Shelf Break Through Time 6-3 OFFSHORE LESS STUDIES Modern shelf break H10 shelf break, ~20 ka H30 shelf break, ~135 ka H40 shelf break, ~240 ka EXPLANATION Notes:

1. See Figure 1-1 for location of study area.
2. Bathymetric contour interval is 10 m. Heavy contours are 50 m isobaths.
3. Refer to Plate 1 for explanation of tracklines.

Sources:

- Project DEM compilation v2013.07.

- Traces of Point Buchon fault from PG&E (2012).

0 1

2 mi.

0 1

2 km Figure Hosgri fault zone traces: solid where well located, dashed where approximately located, dotted where concealed, short dashed where inferred, queried where existence is uncertain.

?

Other Quaternary fault: solid where well located, dashed where approximately located, dotted where concealed, short dashed where inferred, queried where existence is uncertain.

?

Ch3.GEO.DCPP.TR.14.02 R0

File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-04.mxd; Date: 07/11/2014; User: Alex Remar, LCI; Rev.1 11006 Broad Embayment Erosional Trough Elongate Basin PBS-40 PBS-08 PBS-22T PBS-08T PBS-44 PBC-06T PBS-04T PBS-33T PBS-21A PBS-31 PBS-20T PBS-T2A PBS-21 PBS-07 PBS-22 PBS-32 PBS-43 PBS-33 PBS-04 PBS-34 PBS-20 PBS-19 PBS-35 PBC-05 PBS-36 PBC-06 PBS-01 PBS-03 PBS-02 PBS-T2 PBS-T1A PBS-265 PBS-268 PBS-266 PBS-262 PBS-263

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-150 EB5_S14 EB5_S1 EB9_S14 EB9_S1 EB6_S14 EB6_S1 EB11_S14 EB11_S1 EB7_S14 EB7_S1 EB8_S1 EB8_S14 EB12_S1 EB12_S14 EB14_S14 EB14_S1 EB13_S14 EB13_S1 EB1_S1 EB1_S14 EB2_S1 EB3_S14 EB3_S1 EB4_S1 EB4_S14 Cayucos Cambria Los Osos Port San Luis San Luis Obispo DCPP Figure extent Cambria Cayucos Paso Robles Los Osos Morro Bay Pismo Beach Port San Luis San Luis Obispo San Simeon Point Estero Estero Bay Point Buchon Point Sal Point Piedras Blancas Point San Luis San Simeon Point DCPP Full Extent of Top of Pre-Quaternary Bedrock Map from PG&E (2013)

Quaternary fault: solid where well located, dashed where approximately located, dotted where concealed, short dashed where inferred, queried where existence uncertain. Heavy lines are traces of the Hosgri fault zone.

EXPLANATION High : - 15 m Low : -350 m Top of Pre-Quaternary Rock Depth Below Sea Level Extent of Primary Map Sources:

-Project DEM compilation v2013.07.

-Traces of Point Buchon fault from PG&E (2012).

-USGS seismic-reflection data (Sliter et al., 2009).

-Fugro 2D and 3D seismic-reflection data (2012).

Notes:

1. Where they meet, bathymetric contours do not align with interpreted contours on the top of pre-Quaternary rock because the seismic data are not depth-migrated, and depths of structure contours were estimated using an assumed seismic velocity of 1,600 m/s.

Therefore, the general shape of the structure contours is accurate, but the actual depths are an approximation.

2. A 10 m structure contour interval is shown, heavy contours are 50 m.

Bathymetric contours are used in regions where bedrock is exposed at the seafloor.

2008/2009 seismic survey navigation lines 2012 Estero Bay 2D tracklines Point Buchon 2D survey tracklines Extent of 2012 3D seismic survey 6-4 Structure Contour Map of the Top of Pre-Quaternary Bedrock OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure 0

0.5 1

mi.

0 0.5 1

km Map projection and scale: WGS 84 / UTM Zone 10N, 1:40,000 0

5 10 mi.

0 5

10 km Ch3.GEO.DCPP.TR.14.02 R0

File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-05.mxd; Date: 04/25/2014; User: Jereme Chandler, LCI; Rev.1 (a)

Uninterpreted (b)

Interpreted Notes:

1. See Figure 1-1 for location of study area.
2. Depth values on seismic profile assume a velocity of 1,600 m/s.

Excerpt of Profile EB9-S14 Showing Relationship Between Regional Unconformities and Reflections in 3D Volume East of the HFZ 6-5 OFFSHORE LESS STUDIES EXPLANATION DCPP Figure extent in blue Unconformity H30 Unconformity H40 Unconformity H45 Unconformity H48 Unconformity T05 Top of pre-Quaternary rock Unconformity T50 Unconformity T30 Unconformity T10 Tie with unconformity mapped on intersecting line Sources:

- Fugro 2D and 3D seismic-reflection data (2012).

- USGS seismic-reflection data (Sliter et al., 2009).

Location of seismic profile Fugro 3D survey extent Fugro 2D survey trackline USGS survey trackline Pacific Gas and Electric Company Figure Ch3.GEO.DCPP.TR.14.02 R0

File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-06.mxd; Date: 04/25/2014; User: Alex Remar, LCI; Rev.1 6-6 Excerpt of Line PBS-T1A Showing Channels in Embayment North of 3D Volume OFFSHORE LESS STUDIES (a)

(b)

(c)

Sources:

- USGS seismic-reflection data (Sliter et al., 2009).

- Fugro 3D and 2D seismic-reflection data (2012).

EXPLANATION Seafloor Unconformity H10 Unconformity H30 Unconformity H40 Top of pre-Quaternary rock Notes:

1. See Figure 1-1 for location of study area.
2. Depth values on seismic profile assume a seismic velocity of 1,600 m/s.
3. Faults in location map described on Plate 1a.

Location of seismic profile Fugro 3D survey extent Fugro 2D survey trackline USGS survey trackline Fault, solid where well located, dashed where approximately located, dotted where inferred, queried where existence uncertain.

?

Unconformity H48 Unconformity T05 Pacific Gas and Electric Company Figure DCPP Figure extent in blue Figure extent in blue Ch3.GEO.DCPP.TR.14.02 R0

DCPP Figure extent in blue File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-07.mxd; Date: 07/11/2014; User: Alex Remar, LCI; Rev.1 6-7 Excerpt of Line PBS-T1A Showing Channel Fe OFFSHORE LESS STUDIES (a)

(b)

(c)

Sources:

- USGS seismic-reflection data (Sliter et al., 2009).

- Fugro 3D and 2D seismic-reflection data (2012).

EXPLANATION Seafloor Unconformity H10 Top of pre-Quaternary rock Notes:

1. See Figure 1-1 for location of study area.
2. Depth values on seismic profile assume a seismic velocity of 1,600 m/s.
3. Faults in location map described on Plate 1a.

Location of seismic profile Fugro 3D survey extent Fugro 2D survey trackline USGS survey trackline Channel Fe Unnamed channel Pacific Gas and Electric Company Figure Figure extent in blue Ch3.GEO.DCPP.TR.14.02 R0

File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-08.mxd; Date: 04/25/2014; User: Alex Remar, LCI; Rev.1 PG&E (2011)

Willingham et al. (2013)

PBS-33 PBS-04 PBS-20 PBC-05 PBS-34 PBS-03 PBS-19 PBC-06 PBS-35 PBS-T1A PBS-36 PBS-01 PBS-02 PBS-265 PBS-268 PBS-266 PBS-262 PBS-263

-120°56'

-120°56'

-120°58'

-120°58'

-121°0'

-121°0' 35°20' 35°20' 35°18' 35°18'

^_

Cayucos Cambria Los Osos Port San Luis San Luis Obispo DCPP Figure extent M

M 11006 10001 HF1013 HF2001 HF2002 PBS-33 PBS-04 PBS-20 PBS-T2 PBC-05 PBS-34 PBS-03 PBS-19 PBC-06 PBS-35 PBS-T1A PBS-36 PBS-01 PBS-02 PBS-265 PBS-268 PBS-266 PBS-262 PBS-263 EB5_S14 EB5_S1 EB9_S14 EB9_S1 EB4_S1 EB4_S14 EB11_S14 EB11_S1 EB13_S1 EB13_S14 EB6_S1 EB12_S14 EB6_S14 EB12_S1 EB8_S1 EB8_S14 EB14_S1 EB14_S14 EB7_S14 EB7_S1 EB2_S1 EB1_S1 EB1_S14 EB3_S14 EB3_S1

-120°56'

-120°56'

-120°58'

-120°58'

-121°0'

-121°0' 35°20' 35°20' 35°18' 35°18' Map projection and scale: WGS 84 / UTM Zone 10N, 1:40,000 Previous mapping from PG&E (2011) and Willingham et al. (2013)

Revised mapping (this study)

Notes:

1. See Figure 1-1 for location of study area.
2. Faults in left panel mostly from PG&E (2011). Faults from Willingham et al. (2013) shown outside map boundary of PG&E (2011)

(brown and white line).

3. Project DEM compilation v6 from PG&E (2011) shown on left panel.

Sources:

- USGS seismic-reflection data (Sliter et al., 2009).

- Fugro 2D and 3D seismic-reflection data (2012).

- Project DEM compilation v2013.07.

EXPLANATION 6-8 Pacific Gas and Electric Company Figure Fault Map Comparison OFFSHORE LESS STUDIES Hosgri fault zone traces: solid where well located, dashed where approximately located, dotted where concealed, short dashed where inferred, queried where existence is uncertain.

Other Quaternary fault: solid where well located, dashed where approximately located, dotted where concealed, short dashed where inferred, queried where existence is uncertain.

?

Fugro 3D survey extent Fugro 2D survey trackline USGS survey trackline Anticline, arrow on axis indicates direction of plunge M

Syncline

+/-

0 0.5 1

mi.

0 1

2 km

?

Ch3.GEO.DCPP.TR.14.02 R0

DCPP Figure extent in blue File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-09a.mxd; Date: 07/11/2014; User: Jereme Chandler, LCI; Rev.1 6-9a Uninterpreted Profiles and Time Slice at 155 ms Showing Localization of Folding Adjacent to Minor Bend in Eastern Trace of HFZ OFFSHORE LESS STUDIES (a)

Sources:

- 3D seismic reflection data from Fugro (2013).

- Project DEM compilation v2013.07.

EXPLANATION

-120°58'

-120°58'

-120°58.5'

-120°58.5' 35°19' 35°19' 35°18.5' 35°18.5' (b)

(c)

Location of seismic profile Fugro 3D survey extent Fugro 2D survey trackline USGS survey trackline Inline 7470 Crossline 1200 Time slice at 155 ms Map projection and scale: WGS 84 / UTM Zone 10N, 1:10,000 0

1,000 2,000 ft.

0 200 400 m

Pacific Gas and Electric Company Figure Notes:

1. See Figure 1-1 for location of study area.
2. Depth values on seismic profile assume a seismic velocity of 1,600 m/s.
3. Folded reflectors on the northwest side of the profile in panel (a) are also imaged in plan view on the time slice in panel (c). Reflectors on panel (c) are folded adjacent to the east trace of the Hosgri fault zone, centered around a minor (approximately 30 m wide) double left bend in the fault trace. Closure of channel margins in the same image indicates the channels are also folded adjacent to the fault.

Ch3.GEO.DCPP.TR.14.02 R0

DCPP Figure extent in blue File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-09b.mxd; Date: 07/11/2014; User: Jereme Chandler, LCI; Rev.1 6-9b OFFSHORE LESS STUDIES (d)

Sources:

- 3D seismic reflection data from Fugro (2013).

- Project DEM compilation v2013.07.

EXPLANATION 11006 11020 11401 11021 11022 11023 11025

-120°58'

-120°58'

-120°58.5'

-120°58.5' 35°19' 35°19' 35°18.5' 35°18.5' (e)

(f)

Top of pre-Quaternary rock Unconformity T70 Unconformity T50 Unconformity T30 Unconformity T10 NW Location of seismic profile Fault, solid where well located, dashed where approximately located, dotted where inferred, queried where existence uncertain.

?

Depth of time slice Anticline, arrow on axis indicates direction of plunge Anticline Interpreted Profiles and Time Slice at 155 ms Showing Localization of Folding Adjacent to Minor Bend in Eastern Trace of HFZ Inline 7470 Crossline 1200 Time slice at 155 ms 0

1,000 2,000 ft.

0 200 400 m

Notes:

1. See Figure 1-1 for location of study area.
2. Depth values on seismic profile assume a seismic velocity of 1,600 m/s.
3. Folded reflections on the northwest side of the profile in panel (a) are also imaged in plan view on the time slice in panel (c). Reflections on panel (c) are folded adjacent to the east trace of the Hosgri fault zone, centered around a minor (approximately 30 m wide) double left bend in the fault trace. Closure of channel margins in the same image indicates the channels are also folded adjacent to the fault.

Pacific Gas and Electric Company Figure Map projection and scale: WGS 84 / UTM Zone 10N, 1:10,000 Fugro 3D survey extent Fugro 2D survey trackline USGS survey trackline Ch3.GEO.DCPP.TR.14.02 R0

DCPP

-120°58'

-120°58' 35°18' 35°18' File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-10a.mxd; Date: 04/28/2014; User: Jereme Chandler, LCI; Rev.1 6-10a Uninterpreted Time Slice at 155 ms and Inline 7500 Showing Shallow Channels East of HFZ OFFSHORE LESS STUDIES (a)

EXPLANATION

-120°58'

-120°58' 35°18' 35°18' Figure extent in blue Map projection: WGS 84 / UTM Zone 10N (b)

Extent of Map (c)

+/-

Map scale: 1:18,000

-120°58'

-120°58.5' 35°19'

-120°58' 35°19' (c)

Extent of Map (d)

(d)

+/-

+/-

0 1,000 2,000 ft.

0 400 800 m

1:7,000 Map scale:

Sources:

- 3D seismic reflection data from Fugro (2013).

- Project DEM compilation v2013.07.

Top of pre-Quaternary rock Unconformity T70 Unconformity T50 Unconformity T30 Unconformity T10 Notes:

1. See Figure 1-1 for location of study area.
2. Depth values on seismic profile assume a seismic velocity of 1,600 m/s.
3. Faults are shown where they intersect the 150 ms time slice.
4. Channels are incised into deformed strata east of Hosgri fault zone. They are buried by a thin layer of sediment that was likely deposited during or after the most recent transgression and is obscured by the bubble pulse.
5. Channels Ae2 and Ae1 are folded adjacent to the Hosgri fault zone.
6. Channel Be is truncated by the primary eastern strand of the Hosgri fault zone.

Location of seismic profile Fault, solid where well located, dashed where approximately located, dotted where inferred, queried where existence uncertain.

?

Depth of time slice Fugro 3D survey extent Fugro 2D survey trackline USGS survey trackline 1:7,000 Map scale:

Inline 7500 Time Slice at 155 ms Pacific Gas and Electric Company Figure 0

200 400 ft.

0 100 200 m

0 200 400 ft.

0 100 200 m

Ch3.GEO.DCPP.TR.14.02 R0

-120°58'

-120°58' 35°18' 35°18' File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-10b.mxd; Date: 07/11/2014; User: Jereme Chandler, LCI; Rev.1 6-10b Interpreted Time Slice at 155 ms and Inline 7500 Showing Shallow Channels East of the HFZ OFFSHORE LESS STUDIES (e)

EXPLANATION 11021

-120°58'

-120°58' 35°18' 35°18' Map projection: WGS 84 / UTM Zone 10N (f)

Extent of Map (g)

Map scale: 1:18,000 11020 11023 11006 11025 11021

-120°58'

-120°58.5' 35°19'

-120°58' 35°19' 1:7,000 Map scale:

(g)

Extent of Map (h)

(h) 0 1,000 2,000 ft.

0 400 800 m

1:7,000 Map scale:

Sources:

- 3D seismic reflection data from Fugro (2013).

- Project DEM compilation v2013.07.

Top of pre-Quaternary rock Unconformity T70 Unconformity T50 Unconformity T30 Unconformity T10 Notes:

1. See Figure 1-1 for location of study area.
2. Depth values on seismic profile assume a seismic velocity of 1,600 m/s.
3. Faults are shown where they intersect the 155 ms time slice.
4. Channels are incised into deformed strata east of Hosgri fault zone. They are buried by a thin layer of sediment that was likely deposited during or after the most recent transgression and is obscured by the bubble pulse.
5. Channels Ae2 and Ae1 are folded adjacent to the Hosgri fault zone.
6. Channel Be is truncated by fault 11006, the primary eastern strand of the Hosgri fault zone.

Margin of Channel Ae3 Margin of Channel Ae2 Margins of Channel Be Location of seismic profile Fault, solid where well located, dashed where approximately located, dotted where inferred, queried where existence uncertain.

?

Depth of time slice Fugro 3D survey extent Fugro 2D survey trackline USGS survey trackline Margin of Channel Ae3 Margin of Channel Ae2 Margins of Channel Be Margin of Channel De Margin of Channel Ae1.5 Margin of Channel Ae1.5 Pacific Gas and Electric Company Figure 0

200 400 ft.

0 100 200 m

0 200 400 ft.

0 100 200 m

DCPP Figure extent in blue Ch3.GEO.DCPP.TR.14.02 R0

VE = 8x 5° 10° 30° 64 0

Depth (m) 10,500 11,000 NW SE Distance along profile (m)

VE = 8x 5° 10° 30° 3,000 3,500 NW SE Distance along profile (m)

VE = 8x 5° 10° 30° 0.12 0.18 0.24 Two-Way Travel Time (s) 2,500 3,000 NW SE Distance along profile (m)

Inline 7415 Inline 7500 Line PBS-T1A (Flattened to Seafloor)

Channel Ee1 Unnamed inset channels Channel De Unnamed inset channels Channel De Channel Ce Sources:

- USGS seismic-reflection data (Sliter et al., 2009).

- Project DEM compilation v2013.07.

- 3D seismic-reflection data from Fugro (2012).

- Traces of Point Buchon fault from PG&E (2012).

Map scale: 1:54,000 Map projection: WGS 84 / UTM Zone 10N 0

0.5 1

mi.

0 1

2 km Notes:

1. See Figure 1-1 for location of study area.
2. Depth values on seismic profile assume a velocity of 1,600 m/s.
3. Unnamed inset channels are local features that are not correlated between the three profiles illustrated due to gaps in data coverage.
4. All profiles displayed at 8x vertical exaggeration.

EXPLANATION Seafloor Unconformity H10 Top of pre-Quaternary rock Channel Ee Channel De Unnamed inset channels Unconformity T70 Unconformity T50 Unconformity T30 Channel thalweg correlation Location of seismic profile Fault, solid where well located, dashed where approximately located, dotted where inferred, queried where existence uncertain.

Fugro 3D survey extent Fugro 2D survey trackline USGS survey trackline

?

DCPP Figure extent in blue 11006 HF2002 HF2001 10001

-120°57'

-120°57'

-121°0' 35°18' 35°18' Location Map

?

11006 HF2002 HF2001 10001

-120°57'

-120°57'

-121°0'

-121°0' 35°18' 35°18' PBS-T1A Inline 7500 Inline 7415 File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-11.ai; Date: 04/21/2014; User: LCI; Rev.1 6-11 Fence Diagram Showing Correlation of Channels De and Ee OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure Ch3.GEO.DCPP.TR.14.02 R0

File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-12.mxd; Date: 07/11/2014; User: Jereme Chandler, LCI; Rev.1 (a)

(b)

Notes:

1. See Figure 1-1 for location of study area.
2. Unnamed inset channels are recognized only locally.
3. Depth values on seismic profile assume a seismic velocity of 1,600 m/s.

Sources:

- 2D and 3D seismic-reflection data from Fugro (2012).

- Project DEM compilation v2013.07.

Bathymetric contour interval is 10 m.

Heavy contours are 50 m isobaths.

EXPLANATION 6-12 Excerpt of Inline 7415 Showing Deformed Channel Sequence Ee Between Strands of the HFZ OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure (c)

Interpreted Interpretation of Restored Profile Deformation Restored to Arbitrary Horizon Above Channels 11006 10001 HF2001 HF2002

-120°54'

-120°54'

-120°56'

-120°56'

-120°58'

-120°58'

-121°0'

-121°0' 35°18' 35°18' (d)

DCPP Figure extent in blue 1:50,000 Map projection and scale: WGS 84 / UTM Zone 10N, Fault, solid where well located, dashed where approximately located, dotted where inferred, queried where existence uncertain.

?

Unnamed inset channels Location of seismic profile Fugro 3D survey extent Fugro 2D survey trackline Syncline Anticline 0

0.5 1

mi.

0 1

2 km Ch3.GEO.DCPP.TR.14.02 R0

File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-13.mxd; Date: 07/11/2014; User: Jereme Chandler, LCI; Rev.1 11006 HF1013 10001 HF2002 HF2001

-121°0'

-121°0' 35°20' 35°20' 35°16' 35°16' DCPP Map projection and scale: WGS 84 / UTM Zone 10N, 1:90,000 Figure extent in blue 6-13 Excerpt of 2D Profile EB14-S14 Showing Stratigraphic Context of Possible Channels West of the HFZ OFFSHORE LESS STUDIES (a)

(b)

(c)

SE NW Notes:

1. See Figure 1-1 for location of study area.
2. Depth values on seismic profile assume a velocity of 1,600 m/s.
3. Unnamed possible channels are local features that are not observed on adjacent seismic lines.

Sources:

- USGS seismic-reflection data (Sliter et al., 2009).

- 2D and 3D seismic-reflection data from Fugro (2012).

- Project DEM compilation v2013.01. Bathymetric contour interval is 10 m. Heavy contours are 50 m isobaths.

- Traces of Point Buchon fault from PG&E (2012).

EXPLANATION Location Map Unconformity H30 Unconformity H40 Unconformity H45 Unconformity H48 Unconformity T05 0

1 2

mi.

0 2

4 km Location of seismic profile Fault, solid where well located, dashed where approximately located, dotted where inferred, queried where existence uncertain.

?

Fugro 3D survey extent Fugro 2D survey trackline Pacific Gas and Electric Company Figure Ch3.GEO.DCPP.TR.14.02 R0

0.22 0.28 0.34 13000 0.22 0.28 0.34 13200 0.26 0.32 0.38 9000 0.08 0.14 Two-way Travel Time (s) 7000 7800 8600 Distance along profile (m) 0.20 PBS-T2 EB-4 EB-12 EB-14 VE = 8x 5° 10° 30° VE = 8x 5° 10° 30° VE = 8x 5° 10° 30° VE = 8x 5° 10° 30° 1,300 m 525 m 170 m File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-14a.ai; Date: 04/21/2014; User: Jereme Chandler, LCI; Rev.1 6-14a Uninterpreted Fence Diagram Showing Channel DBw West of the HFZ OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure Notes:

1. See Figure 1-1 for location of study area.
2. Depth values on seismic profile assume a velocity of 1,600 m/s.
3. USGS profile PBS-T2 is shown flattened to seafloor.
4. All profiles displayed at 8x vertical exaggeration.
5. The early-late Pliocene unconformity mapped regionally by Willingham et al. (2013). It is mapped onto USGS 2D profile PBS-T2 based on the direct intersection with line PGE-1, which was the basis for section C-C' in Willingham et al. (2013).

E X P L A N AT I O N Slope channel thalweg mapped from seismic-reflection data Location of seismic profile Fugro 3D survey extent Fugro 2D survey trackline USGS survey trackline Sources:

- USGS seismic-reflection data (Sliter et al., 2009).

- Project DEM compilation v2013.07.

- Fugro 3D seismic-reflection data (2012).

- Traces of Point Buchon fault from PG&E (2012).

?

Fault, solid where well located, dashed where approximately located, dotted where inferred, queried where existence uncertain.

Channel Depth 130 ms

(~100 m) 440 ms

(~350 m)

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-120°57'

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0.22 0.28 0.34 13000 0.22 0.28 0.34 13200 0.26 0.32 0.38 9000 0.08 0.14 Two-way Travel Time (s) 7000 7800 8600 Distance along profile (m) 0.20 PBS-T2 EB-4 EB-12 EB-14 VE = 8x 5° 10° 30° VE = 8x 5° 10° 30° VE = 8x 5° 10° 30° VE = 8x 5° 10° 30° 1,300 m 525 m 170 m HF2002 File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-14b.ai; Date: 04/21/2014; User: Jereme Chandler, LCI; Rev.1 6-14b Interpreted Fence Diagram Showing Channel DBw West of the HFZ OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure Notes:

1. See Figure 1-1 for location of study area.
2. Depth values on seismic profile assume a velocity of 1,600 m/s.
3. USGS profile PBS-T2 is shown flattened to seafloor.
4. All profiles displayed at 8x vertical exaggeration.
5. The early-late Pliocene unconformity mapped regionally by Willingham et al. (2013). It is mapped onto USGS 2D profile PBS-T2 based on the direct intersection with line PGE-1, which was the basis for section C-C' in Willingham et al. (2013).

E X P L A N AT I O N Unconformity T05 Unconformity ELP Slope channel thalweg mapped from seismic-reflection data Channel DBw Fugro 3D survey extent Fugro 2D survey trackline USGS survey trackline PG&E survey trackline Sources:

- USGS seismic-reflection data (Sliter et al., 2009).

- Project DEM compilation v2013.07.

- 3D seismic-reflection data from Fugro (2012).

- Traces of Point Buchon fault from PG&E (2012).

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Fault, solid where well located, dashed where approximately located, dotted where inferred, queried where existence uncertain.

Channel Depth 130 ms

(~100 m) 440 ms

(~350 m)

Location of seismic profile 0

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-120°57'

-120°57'

-121°0'

-121°0' 35°18' 35°18' PBS-T2 EB-4 EB-14 EB-12 HF2001 PBS-36 PG&E-1 Location Map DCPP Figure extent in blue A

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D' Seafloor Multiple Ch3.GEO.DCPP.TR.14.02 R0

File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-15.mxd; Date: 04/28/2014; User: Alex Remar, LCI; Rev.1

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Hazard Canyon Offshore Islay Creek Offshore Coon Creek 11006 Unnamed deep channels DAw DBw DCw Ae3 Be Ee1 De Bedrock surface beneath Fe

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-120°55'

-120°55'

-121°0'

-121°0' 35°20' 35°20' 35°15' 35°15' Map projection and scale: WGS 84 / UTM Zone 10N, 1:45,000

EXPLANATION

^_

Cayucos Los Osos Port San Luis San Luis Obispo DCPP Figure extent Map of Channels, Flow Pathways, and Potential Sediment Sources on Shelf 6-15 OFFSHORE LESS STUDIES

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0 0.5 1

mi.

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2 km Notes:

1. See Figure 1-1 for location of study area.
2. Contours within channels mapped from seismic data are on 5 ms intervals.
3. Refer to Plate 3 for source of channel mapping.

Sources:

-Project DEM compilation v2013.07.

-Traces of Point Buchon fault from PG&E (2012).

Slope channel thalweg mapped from seismic-reflection data Shelf channel or flow pathway mapped from bathymetry Fault, solid where well located, dashed where approximately located, dotted where inferred, queried where existence uncertain.

Approximate direction of slope channel inferred from contours on top of pre-Quaternary rock Structure contours on top of pre-Quaternary rock; 10 m contour interval, heavy contours are 50 m.

Channel Depth 130 ms

(~100 m) 440 ms

(~350 m)

Pacific Gas and Electric Company Figure Ch3.GEO.DCPP.TR.14.02 R0

DBw DCw Be Ee1 De HF2001 10001 11006 HF2002

-120°58'

-120°58'

-120°59'

-120°59' 35°18.5' 35°18.5' 35°18' 35°18' 35°17.5' 35°17.5' 35°17' 35°17' File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-16.mxd; Date: 07/11/2014; User: Alex Remar, LCI; Rev.1 Map projection and scale: WGS 84 / UTM 10N,1:18,000 Notes:

1. See Figure 1-1 for location of study area.
2. Contours within channels mapped from seismic data are on 5 ms intervals.
3. Refer to Plate 2 for source of mapping.

Figure extend Cayucos Los Osos Port San Luis San Luis Obispo DCPP Figure extent Piercing Point DBw-Ee1-De Separation and Uncertainty 6-16 OFFSHORE LESS STUDIES 0

1,000 2,000 ft.

0 400 800 m

EXPLANATION Fault, solid where well located, dashed where approximately located, dotted where inferred, queried where existence uncertain.

Source: Project DEM compilation v2013.07.

Interpreted Thalwegs Figure Slope channel thalweg mapped from seismic-reflection data Alternative thalweg projection Channel Depth 130 ms

(~100 m) 440 ms

(~350 m)

Pacific Gas and Electric Company

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min. separation:

450 m max. separation: 1,650 m preferred separation: 700-1,000 m 260 +/- 60 m separation Ch3.GEO.DCPP.TR.14.02 R0

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Offshore Islay Creek Offshore Coon Creek 11006 Bedrock surface beneath Fe Be Ee1 De 0

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M 11006 DAw DBw DCw Ae3 Be Ee1

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Is 11006 Bedrock surface beneath Fe DCw Ae3 Be Ee1 De

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11006 DAw DBw DCw Ae3 Be Ee1 De

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-150 HF2001 HF2002 10001 HF1013 Correlation A: DBw-Ee1-De-Cumulative 1.1 km Slip Restored Correlation B: DAw-Ee1-De-Cumulative 5.1 km Slip Restored 4,850 m slip restored 250 m slip restored 250 m slip restored 850 m slip restored Unnamed deep channels File path: S:\\1005\\033\\GIS\\Figures\\Figure_06-17.ai; Date: 04/21/2014; User: Brian Gray, LCI; Rev. 1 Pacific Gas and Electric Company Figure Palinspastic Restoration Illustrating Alternative Channel Correlations Across the HFZ 6-17 OFFSHORE LESS STUDIES EXPLANATION Notes:

1. See Figure 1-1 for location of study area.
2. Contours within channels mapped from seismic data are on 5 ms intervals.
3. Where they meet, bathymetric contours do not align with interpreted contours on the top of pre-Quaternary because the USGS seismic profiles are not depth-migrated, and depths of structure contours interpreted from the seismic reflection data were estimated using an assumed seismic velocity of 1,600 m/s.

Therefore, the general shape of the structure contours is accurate, but the actual depths are an approximation.

4. Alternative channel correlations across the HFZ are tested by palinspastic restoration of slip along dominant strands of the HFZ.
5. Refer to Plate 2 for source of mapping.

Sources:

-Project DEM compilation v2013.07.

-Traces of Point Buchon fault from PG&E (2012).

Slope channel thalweg mapped from seismic-reflection data Shelf channel or flow pathway mapped from bathymetry Fault, solid where well located, dashed where approximately located, dotted where inferred, queried where existence uncertain.

Approximate direction of slope channel inferred from contours on top of pre-Quaternary rock.

Structure contours on top of pre-Quaternary rock; 10 m contour interval, heavy contours are 50 m.

Block boundary for palinspastic restoration.

Channel Depth 130 ms

(~100 m) 440 ms

(~350 m)

Map projection and scale: WGS 84 / UTM Zone 10N, 1:45,000

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Ch3.GEO.DCPP.TR.14.02

Pacific Gas and Electric Company Lions Head Fault Casmalia Fault Shoreline Fault 397-1 Purisima Structure Hosgri Fault Zone Hosgri Fault Zone W-22-79-2024 GSI-85-203 GSI-85-201 GSI-80-97 DCPP 422-1 060-1 409-3

-120°40'

-120°40'

-120°50'

-120°50'

-121°0'

-121°0' 35°10' 35°10' 35°0' 35°0' 34°50' 34°50' GSI-80-97 DCPP Sources:

-Well locations from Willingham et al. (2013).

-Project DEM compilation v2013.01.

Figure extent Legacy Archive Well Tie Lines, Offshore Point Sal 6-18 OFFSHORE LESS STUDIES 397-1 File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-18_LeagcyArchiveWellTieLinesPointSal; Date: 6/9/2014; User: Ranon Dulberg, Fugro; Rev. 3 Map projection and scale: WGS 84 / UTM Zone 10N,1:250,000

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8 mi.

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12 km Figure Point Sal EXPLANATION Legacy archive well tie line Exploratory well location and number Legacy archive line 2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

OFFSHORE LESS STUDIES Migrated Seismic Reflection Record Showing Near Top of Neogene Unconformity Mapped in This Study Pacific Gas and Electric Company Figure 6-19 File path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\ai\\Figure_6-19_GSI_97.ai; Date: 05/13/2014; User: Bryan Bergkamp, Fugro; Rev.3 Top of Miocene Unconformity Near Top of Neogene Unconformity Vertical exaggeration = 2.0 at seafloor km 0

1 2

Horizontal scale Notes:

1. Migrated seismic reflection GSI Line 97 showing three major unconformities in this study: (1) Top of Miocene unconformity, (2) early-late Pliocene unconformity, and (3) near top of Neogene unconformity.
2. The data are from a seismic reflection line that crosses the Hosgri fault zone in the west-central part of San Luis Obispo Bay (Line GSI-97). Note the onlap of younger sediments onto the early-late Pliocene unconformity and the near top of Neogene unconformity.
3. See Figure 6-18 for line location. Source: Modified from Willingham et al. (2013, Figure 7).

Early-late Pliocene Unconformity Shotpoints Hosgri Fault Zone 1400 1200 Two-Way Travel Time (s) 1.0 2.0 1300 1300 0.0 SW NE Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure DCPP W-22-79-2024 GSI-85-203 GSI-85-201 GSI-80-97 Uninterpreted (b)

Interpreted Figure extent GSI Line 203 (1985) 6-20 OFFSHORE LESS STUDIES EXPLANATION Seafloor Hosgri fault Near top of Neogene unconformity Early-late Pliocene unconformity Top of Miocene unconformity Stratigraphic well pick File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-20_GSILine_1985_203.mxd; Date: 7/18/2014; User: Bryan Bergkamp, Fugro; Rev.3 Point Sal Ch3.GEO.DCPP.TR.14.02 R0

DCPP

-120°48'

-120°44' 34°56' 34°56' 34°54' 34°54' 34°52' 34°52'

-120°48'

-120°46' Figure extent 6-21 Distribution of Mapped ELP/NTN Unconformity and H10 and H30 Horizons, Point Sal OFFSHORE LESS STUDIES

-120°48'

-120°44' 34°56' 34°56' 34°54' 34°54' 34°52' 34°52'

-120°48'

-120°46' Map projection and scale: WGS 84 / UTM Zone 10N, 1:35,000

+/-

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2 km Pacific Gas and Electric Company Figure Notes:

1. Maps are rotated 22 degrees to the northeast.
2. Gray areas are where the unconformity or horizon are not mapped.
3. Contour interval for early-late Pliocene / near top of Neogene (ELP/NTN) unconformity is 0.01 seconds for minor contours and 0.05 for major contours.
4. Contour interval for H10 and H30 horizons is 0.001 seconds for minor contours and 0.005 for major contours.

(a) ELP/NTN (b) H10

-120°48'

-120°44' 34°56' 34°56' 34°54' 34°54' 34°52' 34°52'

-120°48'

-120°46' (c) H30 File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-21_DistributionMappedHoriz.mxd; Date: 4/29/2014; User: Ranon Dulberg, Fugro; Rev.3 Point Sal EXPLANATION 2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure Point Sal 1083 Uninterpreted Interpreted Line location Line 1083, West of HFZ Showing ELP/NTN Unconformity and H10 and H30 Horizons 6-22 OFFSHORE LESS STUDIES EXPLANATION (b)

(a)

Note: See Figure 6-27 for line location.

Seafloor H10 unconformity H30 unconformity Channel F margin Early-late Pliocene/

near top of Neogene unconformity (ELP/NTN)

File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-22_Line1083.mxd; Date: 6/10/2014; User: Ranon Dulberg, Fugro; Rev.3 2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Quaternary strata ELP/NTN unconformity Bedrock Channel fill Fe Ee Channel fill Quaternary strata Quaternary strata

-120°45'

-120°45'

-120°45.5'

-120°45.5'

-120°46'

-120°46' 34°53.5' 34°53.5' 34°53' 34°53' 34°52.5' 34°52.5' Time Slice at 150 ms in Southern Part of Point Sal Study Area 6-23 OFFSHORE LESS STUDIES Map projection and scale: WGS 84 / UTM Zone 10N, 1:13,000

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0 0.25 0.5 km Point Sal Figure extent Pacific Gas and Electric Company Figure EXPLANATION Hosgri central strand Hosgri western strand Hosgri eastern strand Fault File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-23_TimeSlice150South.mxd; Date: 6/10/2014; User: Ranon Dulberg, Fugro; Rev.3 2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

ELP/NTN unconformity Ac Quaternary channel fill Quaternary strata Quaternary channel fill Quaternary strata Aw ELP/NTN unconformity Neogene strata Neogene strata Quaternary strata 34°56' 34°56' Time Slice at 180 ms in Northern Part of Point Sal Study Area 6-24 OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure Map projection and scale: WGS 84 / UTM Zone 10N, 1:14,000

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km Point Sal Figure extent EXPLANATION Fault Hosgri eastern strand Hosgri western strand File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-24_TimeSlice180LionsHeadN.mxd; Date: 6/10/2014; User: Ranon Dulberg, Fugro; Rev.3 Reverse fault concealed

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2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Quaternary strata ELP/NTN unconformity Ac Quaternary channel fill Quaternary channel fill Quaternary strata Aw Neogene strata Neogene strata Quaternary strata ELP/NTN unconformity Neogene strata Neogene strata ELP/NTN unconformity Neogene strata

-120°46'

-120°46.5'

-120°46.5'

-120°47'

-120°47'

-120°47.5'

-120°47.5' 34°56.5' 34°56.5' 34°56' 34°56' 34°55.5' 34°55.5' Time Slice at 213 ms in Northern Part of Point Sal Study Area 6-25 OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure Map projection and scale: WGS 84 / UTM Zone 10N, 1:14,000

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km Point Sal Figure extent EXPLANATION Hosgri eastern strand Hosgri western strand Fault File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-25_TimeSlice213LionsHeadN.mxd; Date: 5/16/2014; User: Ranon Dulberg, Fugro; Rev.3 Reverse fault concealed

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2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure 1240 Point Sal Uninterpreted Interpreted Line location Line 1240 Showing ELP/NTN and H10 and H30 Unconformities and Channel Deposits 6-26 OFFSHORE LESS STUDIES File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-26_Line1240.mxd; Date: 6/10/2014; User: Ranon Dulberg, Fugro; Rev.3 (b)

(a)

EXPLANATION Note: See Figure 6-27 for line location.

Point Sal 3D high-resolution survey extent 2012 Fault Channel F margins Channel E margins Early-late Pliocene/ near top of Neogene unconf. (ELP/NTN)

H30 unconformity H10 unconformity Seafloor Ch3.GEO.DCPP.TR.14.02 R0

Map projection and scale: WGS 84 / UTM Zone 10N,1:38,000

Point Sal DCPP Note: Maps are rotated 68.02 degrees to the northwest.

Figure extent Amplitude and Similarity Time Slices at 160 ms, Point Sal 6-27 OFFSHORE LESS STUDIES

+/-

6-30 6-29 6-35 6-26 6-47 6-22 6-38 6-44 6-43 6-41 6-40 6-37 6-32 6-33 6-31 6-29 6-47

-120°45'

-120°46'

-120°46'

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-120°48'

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-120°48' 34°52' 34°52' 34°54' 34°54' 34°56'

-120°45'

-120°46'

-120°46'

-120°47'

-120°48'

-120°45'

-120°47'

-120°48' 34°52' 34°52' 34°54' 34°54' 34°56'

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-120°47'

-120°48' 34°52' 34°52' 34°54' 34°54' 34°56' F

F F

M F

M 10° restraining bend Hosgri East Hosgri Central Hosgri West Lions Head fault Blind thrust fault NE 330° 336° Anticline Ae Syncline Ae Anticline Aw Syncline Aw Bypass fault 20° releasing bend

-120°45'

-120°46'

-120°46'

-120°47'

-120°48'

-120°45'

-120°47'

-120°48' 34°52' 34°52' 34°54' 34°54' 34°56' 0

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Quaternary fault; solid where well located, long dashed where approximately located, short dashed where inferred, dotted where concealed, queried where existence uncertain Reverse fault; solid where well located, long dashed where approximately located, short dashed where inferred, dotted where concealed, queried where existence uncertain

Ch3.GEO.DCPP.TR.14.02 R0

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Lions Head fault zone Casmalia fault zone Hosgri fault zone Hosgri fault zone Point Sal

-120 m Isobath Purisima structure Casmalia Hills

-120°40'

-120°40'

-120°50'

-120°50' 35°0' 35°0' 34°50' 34°50' Point Sal DCPP Source: PG&E DEM compilation v2013.07.

Note: Only faults exhibiting inferred Quaternary activity are mapped on panel (b) for this study.

Point Sal Fault Map Comparison 6-28 OFFSHORE LESS STUDIES

Lions Head fault zone Casmalia fault zone Hosgri fault zone Hosgri fault zone Point Sal

-120 m Isobath

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Purisima structure Shoreline fault Casmalia Hills

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-120°40'

-120°40'

-120°50'

-120°50' 35°0' 35°0' 34°50' 34°50' Figure extent (a) Previous mapping from Willingham et al. (2013) and Lettis et al. (2004)

(b) Revised mapping (this study)

Map projection and scale: WGS 84 / UTM Zone 10N,1:125,000

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-120 m isobath 2012 Point Sal 3D high-resolution survey extent EXPLANATION Quaternary fault; solid where well located, long dashed where approximately located, short dashed where inferred, dotted where concealed, queried where existence uncertain Reverse fault; solid where well located, long dashed where approximately located, short dashed where inferred, dotted where concealed, queried where existence uncertain

Ch3.GEO.DCPP.TR.14.02 R0

Inline 1370 East of the HFZ, Uninterpreted and Interpreted Showing ELP/ NTN Unconformity, Point Sal OFFSHORE LESS STUDIES Line 1370 6-29

Hosgri West Hosgri Central Lions Head fault Hosgri East Blind thrust fault NE

-120°48'

-120°46'

-120°46'

-120°44' 34°52' 34°56'

-120°48'

-120°44' 34°54' 34°52' 34°56'

+/-

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0.5 1

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km EXPLANATION Time Slice at 160 ms (a)

(b)

(c)

Notes:

1. Map is rotated 132 degrees to the northeast.
2. See Figure 6-27 for line location.

Point Sal 1370 DCPP Figure extent 1370 H30 unconformity H10 unconformity Seafloor File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-29_Line1370.mxd; Date: 7/17/2014; User: Ranon Dulberg, Fugro; Rev.3 Hosgri eastern strand Hosgri central strand Channel F margin Channel E margin Channel C margin Channel B margin Hosgri western strand Pacific Gas and Electric Company Figure Inline 1370 Quaternary fault; solid where well located, long dashed where approximately located, short dashed where inferred, dotted where concealed, queried where existence uncertain Reverse fault; solid where well located, long dashed where approximately located, short dashed where inferred, dotted where concealed, queried where existence uncertain

Early-late Pliocene/

near top Neogene unconformity (ELP/NTN)

H40 unconformity Ch3.GEO.DCPP.TR.14.02 R0

Inline 1020 West of the HFZ, Uninterpreted and Interpreted, Showing ELP/NTN Unconformity and Faults OFFSHORE LESS STUDIES Line 1370 6-30

1020 Hosgri East Hosgri Central Hosgri West Lions Head Fault

-120°48'

-120°46'

-120°46'

-120°44' 34°52' 34°56'

-120°48'

-120°44' 34°54' 34°52' 34°56'

+/-

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0.5 1

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Point Sal 1020 DCPP Figure extent (a)

(b)

EXPLANATION Notes:

1. Map is rotated 132 degrees to the northeast.
2. See Figure 6-27 for line location.

Seafloor H10 unconformity H30 unconformity Channel F margins Inline 1020 Early-late Pliocene/ near top of Neogene unconformity (ELP/NTN)

File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-30_Line1020.mxd; Date:7/17/2014; User: Ranon Dulberg, Fugro; Rev.3 Pacific Gas and Electric Company Figure Quaternary fault; solid where well located, long dashed where approximately located, short dashed where inferred, dotted where concealed, queried where existence uncertain

Reverse fault; solid where well located, long dashed where approximately located, short dashed where inferred, dotted where concealed, queried where existence uncertain

Hosgri western strand Hosgri eastern strand Hosgri central strand 2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

OFFSHORE LESS STUDIES Figure Pacific Gas and Electric Company

0.15 0.14 0.16 0.150 8200 0.16 0.17 0.18 0.14 0.150 0.140

-120°46'

-120°46'

-120°48' 34°56' 34°56' 34°54' 34°54' 34°52' 34°52' Point Sal DCPP Uninterpreted Interpreted Crossline 8200, Uninterpreted and Interpreted, with H30 Surface, Point Sal 6-31 (b)

(a)

Figure extent Notes:

1. Contour interval is 0.001 s for minor contours and 0.01 s for major contours.
2. See Figure 6-27 for line location.

Source: Project DEM Compilation v2013.07.

EXPLANATION Crossline 8200 File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-31_Crossline8200.mxd; Date: 6/12/2014; User: Ranon Dulberg, Fugro; Rev.3 Reverse fault, dashed where inferred

(c)

Fault, dashed where inferred 2012 Point Sal 3D high-resolution survey extent Channel F margin Early-late Pliocene/ near top of Neogene (ELP/NTN) unconformity H30 unconformity H10 unconformity Seafloor Map projection and scale: WGS 84 / UTM Zone 10N, 1:60,000

+/-

0 0.5 1

mi.

0 1

2 km Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure

9140 0.20 0.15 0.15 0.20 0.25 0.15 0.20 0.30 0.35 0.25 0.25 0.25 0.20 0.35 0.30 0.25

-120°46'

-120°46'

-120°48' 34°56' 34°56' 34°54' 34°54' 34°52' 34°52' Point Buchon Point Sal DCPP Uninterpreted Interpreted Crossline 9140, Uninterpreted and Interpreted, with ELP/NTN Unconformity Surface, Point Sal 6-32 OFFSHORE LESS STUDIES (b)

(a)

Figure extent Notes:

1. Contour interval is 0.01 s for minor contours and 0.05 s for major contours.
2. See Figure 6-27 for line location.

Source: Project DEM Compilation v2013.07.

EXPLANATION Crossline 9140 File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-32_Crossline9140.mxd; Date: 5/16/2014; User: Ranon Dulberg, Fugro; Rev.3 (c)

Reverse fault, dashed where inferred

Map projection and scale: WGS 84 / UTM Zone 10N, 1:60,000

+/-

0 0.5 1

mi.

0 1

2 km 2012 Point Sal 3D high-resolution survey extent Fault, dashed where inferred Channel B margin Early-late Pliocene/ near top of Neogene (ELP/NTN) unconformity H30 unconformity H10 unconformity Seafloor Ch3.GEO.DCPP.TR.14.02 R0

9360 0.20 0.15 0.15 0.20 0.25 0.15 0.20 0.30 0.35 0.25 0.25 0.25 0.20 0.35 0.30 0.25

-120°46'

-120°46'

-120°48' 34°56' 34°56' 34°54' 34°54' 34°52' 34°52' Point Sal DCPP Uninterpreted Interpreted Crossline 9360, Uninterpreted and Interpreted, with ELP/NTN Unconformity Surface, Point Sal 6-33 OFFSHORE LESS STUDIES (b)

(a)

Figure extent Notes:

1. Contour interval is 0.01 s for minor contours and 0.05 s for major contours.
2. See Figure 6-27 for line location.

Source: Project DEM Compilation v2013.07.

EXPLANATION File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-33_Crossline9360.mxd; Date: 7/17/2014; User: Ranon Dulberg, Fugro; Rev.3 (c)

Channel B margin Early-late Pliocene/ near top of Neogene (ELP/NTN) unconformity H30 unconformity H10 unconformity Seafloor 2012 Point Sal 3D high-resolution survey extent Map projection and scale: WGS 84 / UTM Zone 10N,1:60,000

+/-

0 0.5 1

mi.

0 1

2 km Pacific Gas and Electric Company Figure Reverse fault, dashed where inferred

(

Crossline 9360 Fault, dashed where inferred Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-34_PS_NTN; Date: 05/15/2014; User: Bryan Bergkamp, Fugro; Rev. 3 Map projection and scale: WGS 84 / UTM Zone 10N,1:38,000 Point Sal DCPP Notes:

1. Contour interval is 0.01 ms for minor contours and 0.05 ms for major contours.
2. Maps are rotated 68.02 degrees to the northwest.

Figure extent Near Top of Neogene Unconformity Contoured in Time and Slope Map, Uninterpreted and Interpreted, Point Sal 6-34 OFFSHORE LESS STUDIES

+/-

-120°45'

-120°46'

-120°46'

-120°47'

-120°48'

-120°45'

-120°47'

-120°48' 34°52' 34°52' 34°54' 34°54' 34°56'

Blind thrust fault NE Lions Head fault Hosgri West Hosgri Central Hosgri East Releasing bends

-120°45'

-120°46'

-120°46'

-120°47'

-120°48'

-120°45'

-120°47'

-120°48' 34°52' 34°52' 34°54' 34°54' 34°56'

-120°45'

-120°46'

-120°46'

-120°47'

-120°48'

-120°45'

-120°47'

-120°48' 34°52' 34°52' 34°54' 34°54' 34°56'

Blind thrust fault NE Lions Head fault Hosgri West Hosgri Central Hosgri East

-120°45'

-120°46'

-120°46'

-120°47'

-120°48'

-120°45'

-120°47'

-120°48' 34°52' 34°52' 34°54' 34°54' 34°56' 0

0.5 1

mi.

0 1

2 km EXPLANATION Neogene Slope (degrees) 05 510 1015 1520 2025 2530 3040 4050 5060 6070 7080 8090 (a) Near Top of Neogene Unconformity, Uninterpreted (b) Near Top of Neogene Unconformity, Interpreted (c) Near Top of Neogene Unconformity Slope Map, Uninterpreted (d) Near Top of Neogene Unconformity Slope Map, Interpreted NW SE Figure Fault, dashed where inferred

Reverse fault, dashed where inferred 2012 Point Sal 3D high-resolution survey extent Two-way Travel Time (seconds) 0.12 (s) 0.56 (s)

Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure Arbitrary Amplitude Section Showing Channels A-G, Uninterpreted and Interpreted, with Labeled Channels OFFSHORE LESS STUDIES Line 1370 6-35





Arbitrary Line Blind thrust fault NE Central Block Western block (Santa Maria Basin)

Eastern block south Eastern block north (Casmalia/Point Sal)

Hosgri Central Hosgri East Hosgri West Lions Head Fault Fc Fw Fe Ge Ee De Be Ce Bc Ac Ae

-120°48'

-120°46'

-120°46'

-120°44' 34°52' 34°56'

-120°48'

-120°44' 34°54' 34°52' 34°56'

+/-

Map projection and scale: WGS 84 / UTM Zone 10N, 1:48,000 0

0.5 1

mi.

0 0.5 1

km Time Slice at 160 ms rotated 132° northeast to to match arbitrary profile (c)

Notes:

1. Map is rotated 132 degrees to the northeast to best match arbitrary profile.
2. See Figure 6-27 for line location.

Point Sal DCPP Figure extent (a)

(b)

EXPLANATION

+/-

Channel G margin Channel F margin Channel E margin Channel D margin Channel C margin Channel B margin Channel A margin Seafloor Arbitrary Line File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-35_ArbitraryLine.mxd; Date: 7/16/2014; User: R. Dame, Fugro; Rev.3 Fault, dashed where inferred Reverse fault, dashed where inferred

(

2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure DCPP Figure extent 6-36 Gridded (Time) Paleochannels with Piercing Point Figure Locations OFFSHORE LESS STUDIES Map projection and scale: WGS 84 / UTM Zone 10N, 1:34,000

+/-

0 0.5 1

mi.

0 1

2 km Figure 6-49 Figure 6-50 Figure 6-51 Aw2 Ac2 Bc Be Fw3 Fc1 Fe3 File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-36_GriddedPChan.mxd; Date: 7/17/2014; User: Ranon Dulberg, Fugro; Rev. 3 Channel Depth 116 ms

(~93 m)

Aw2 Ac2 Bc Be Ce1 De Ee Fe1 Fc1 Fw3 Ge Arbitrary Line (Figure 6-35)

Source: Project DEM compilation v2013.01.

EXPLANATION Hosgri central strand Hosgri eastern strand Hosgri western strand Arbitrary line Western block Central block Eastern block north (Point Sal block)

Eastern block south 2012 Point Sal 3D high-resolution survey extent Reverse fault, dashed where inferred

(

Fault, dashed where inferred (a) Paleochannels (b) Paleochannels used as piercing points Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure 1075 Point Sal DCPP Uninterpreted Interpreted Line location Line 1075 Syncline/Channel A Amplitude Section Central Block of Hosgri, Uninterpreted and Interpreted, with Labeled Channels 6-37 OFFSHORE LESS STUDIES (b)

(a)

EXPLANATION Note: See Figure 6-27 for line location.

File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-37_Line1075.mxd; Date: 6/10/2014; User: Ranon Dulberg, Fugro; Rev.3 Fault Channel A margin Early-late Pliocene / near top of Neogene (ELP/NTN) unconf.

Seafloor 2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

997 Point Sal DCPP Uninterpreted Interpreted Line location Line 997 Syncline/Channel A Amplitude Section, West of HFZ, Uninterpreted and Interpreted, with Labeled Channels 6-38 OFFSHORE LESS STUDIES (b)

EXPLANATION Note: See Figure 6-27 for line location.

File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-38_Line997.mxd; Date: 7/18/2014; User: Bryan Bergkamp, Fugro; Rev.3 Fault Early-late Pliocene / near top of Neogene (ELP/NTN) unconf.

Seafloor H30 Pacific Gas and Electric Company Figure Channel A margin Point Sal 3D high-resolution survey extent (2012)

Ch3.GEO.DCPP.TR.14.02 R0

Uninterpreted Interpreted Channel A Time Slice at 247 ms West of HFZ Uninterpreted and Interpreted, with Labeled Channels 6-39 OFFSHORE LESS STUDIES Figure Pacific Gas and Electric Company

-120°46'

-120°46'

-120°47'

-120°47' 34°56' 34°56' 34°55.5' 34°55.5' Aw2 Ac2 Hosgri East Hosgri West

-120°46'

-120°46'

-120°47'

-120°47' 34°56' 34°56' 34°55.5' 34°55.5' Map projection and scale: WGS 84 / UTM Zone 10N, 1:18,000

+/-

0 1,000 2,000 ft.

0 250 500 m

(b)

(a)

Point Sal DCPP Figure extent EXPLANATION Fault File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-39_TimeSlice_0247.mxd; Date: 6/10/2014; User: Ranon Dulberg, Fugro; Rev.3 Channel thalweg mapped from seismic-reflection data Inferred Channel A Hosgri eastern strand Hosgri western strand 2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure 1264 Point Sal DCPP Uninterpreted Interpreted Line location Line 1264 Channel B Amplitude Section East of the HFZ, Uninterpreted and Interpreted. with Labeled Channel 6-40 OFFSHORE LESS STUDIES (b)

(a)

EXPLANATION Note: See Figure 6-27 for line location.

File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-40_Line1264.mxd; Date: 6/10/2014; User: Ranon Dulberg, Fugro; Rev. 3 Fault Channel B margin H40 unconformity Seafloor Early-late Pliocene / near top of Neogene (ELP/NTN) unconf.

2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure 1112 Point Sal DCPP Uninterpreted Interpreted Line location Line 1112 Channel B Amplitude Section Central Block, Uninterpreted and Interpreted, with Labeled Channel 6-41 OFFSHORE LESS STUDIES (b)

(a)

EXPLANATION Note: See Figure 6-27 for line location.

File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-41_Line1112.mxd; Date: 6/10/2014; User: Ranon Dulberg, Fugro; Rev.3 Fault Channel B margin Seafloor Early-late Pliocene / near top of Neogene (ELP/NTN) unconf.

2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Uninterpreted Interpreted Channel B Time Slice at 146 ms Central Block, Uninterpreted and Interpreted, with Labeled Channels OFFSHORE LESS STUDIES Figure Pacific Gas and Electric Company

-120°46'

-120°46'

-120°46.5'

-120°46.5' 34°55' 34°55' 34°54.75' 34°54.75' 34°54.5' 34°54.5' Be Bc

-120°46'

-120°46'

-120°46.5'

-120°46.5' 34°55' 34°55' 34°54.75' 34°54.75' 34°54.5' 34°54.5' Map projection and scale: WGS 84 / UTM Zone 10N,1:12,000

+/-

0 0.2 0.4 mi.

0 0.25 0.5 km (b)

(a)

Point Sal DCPP Figure extent EXPLANATION 6-42 File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-42_TimeSlice_0146.mxd; Date: 6/10/2014; User: Ranon Dulberg, Fugro; Rev.3 Channel B Hosgri central strand Hosgri western strand Hosgri eastern strand Fault Channel thalweg mapped from seismic-reflection data 2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure 1368 Point Sal DCPP Uninterpreted Interpreted Figure extent Line 1368 Channel F Amplitude Section East of HFZ, Uninterpreted and Interpreted, with Labeled Channel Fe1-3 6-43 OFFSHORE LESS STUDIES (b)

(a)

EXPLANATION Note: See Figure 6-27 for line location.

File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-43_Line1368.mxd; Date: 6/12/2014; User: Ranon Dulberg, Fugro; Rev.3 Channel F margin Channel E margin H30 unconformity Early-late Pliocene / near top of Neogene (ELP/NTN) unconf.

H10 unconformity Seafloor 2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Uninterpreted Interpreted Channel F Time Slice at 160 ms East of the HFZ, Uninterpreted and Interpreted, with Labeled Channel OFFSHORE LESS STUDIES Figure Pacific Gas and Electric Company

-120°45'

-120°45'

-120°45.5'

-120°45.5'

-120°46'

-120°46' 34°53' 34°53' 34°52.75' 34°52.75' Fe3

-120°45'

-120°45'

-120°45.5'

-120°45.5'

-120°46'

-120°46' 34°53' 34°53' 34°52.75' 34°52.75' Map projection and scale: WGS 84 / UTM Zone 10N, 1:12,000

+/-

0 0.2 0.4 mi.

0 0.2 0.4 km (b)

(a)

Figure extent DCPP EXPLANATION 6-44a Figure extent File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-44a_TimeSlice_0160.mxd; Date: 6/11/14; User: Ranon Dulberg, Fugro; Rev.3 Fault Channel F Hosgri central strand Hosgri western strand Hosgri eastern strand Channel thalweg mapped from seismic-reflection data 2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Uninterpreted Interpreted Channel F Time Slice at 170 ms East of the HFZ, Uninterpreted and Interpreted, with Labeled Channel OFFSHORE LESS STUDIES Figure Pacific Gas and Electric Company

-120°45'

-120°45'

-120°45.5'

-120°45.5'

-120°46'

-120°46' 34°53' 34°53' 34°52.75' 34°52.75' Fe3

-120°45'

-120°45'

-120°45.5'

-120°45.5'

-120°46'

-120°46' 34°53' 34°53' 34°52.75' 34°52.75' Map projection and scale: WGS 84 / UTM Zone 10N, 1:12,000

+/-

0 0.2 0.4 mi.

0 0.2 0.4 km (b)

(a)

Figure extent DCPP EXPLANATION 6-44b Figure extent File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-44b_TimeSlice_0170.mxd; Date: 6/11/14; User: Ranon Dulberg, Fugro; Rev.3 Fault Channel F Hosgri central strand Hosgri western strand Hosgri eastern strand Channel thalweg mapped from seismic-reflection data 2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure 1145 Point Sal DCPP Uninterpreted Interpreted Line location Line 1145 Channel F Amplitude Section, Central Block, Uninterpreted and Interpreted, with Labeled Channel Fc1 and Fc2 6-45 OFFSHORE LESS STUDIES (b)

(a)

EXPLANATION Note: See Figure 6-27 for line location.

Seafloor H10 unconformity H30 unconformity Channel F margin Channel G margin Fault File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-45_Line1145.mxd; Date: 6/10/2014; User: Ranon Dulberg, Fugro; Rev.3 2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Uninterpreted Interpreted Channel F Time Slice at 200 ms, Central Block, Uninterpreted and Interpreted, with Labeled Channel 6-46 OFFSHORE LESS STUDIES Figure Pacific Gas and Electric Company

-120°45'

-120°45'

-120°45.5'

-120°45.5'

-120°46'

-120°46' 34°53.25' 34°53.25' 34°53' 34°53' 34°52.75' 34°52.75' Fc1

-120°45'

-120°45'

-120°45.5'

-120°45.5'

-120°46'

-120°46' 34°53.25' 34°53.25' 34°53' 34°53' 34°52.75' 34°52.75' Map projection and scale: WGS 84 / UTM Zone 10N, 1:14,000

+/-

0 0.2 0.4 mi.

0 0.25 0.5 km (b)

(a)

Point Sal DCPP Figure extent File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-46_TimeSlice_0200.mxd; Date: 6/10/2014; User: Ranon Dulberg, Fugro; Rev.3 EXPLANATION Fault Channel F Channel thalweg mapped from seismic-reflection data Hosgri central strand Hosgri western strand Hosgri eastern strand 2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure 1020 Point Sal DCPP Uninterpreted Interpreted Line location Line 1020 Channel F Amplitude Section West of Hosgri, Uninterpreted and Interpreted with Labeled Channel Fw1-3 6-47 OFFSHORE LESS STUDIES (b)

(a)

EXPLANATION Note: See Figure 6-27 for line location.

Seafloor H10 unconformity H30 unconformity Channel F margin Early-late Pliocene / near top of Neogene (ELP/NTN) unconf.

File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-47_Line1020.mxd; Date: 6/12/2014; User: Ranon Dulberg, Fugro; Rev.3 2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Uninterpreted Interpreted Channel F Time Slice at 260 ms West of the HFZ, Uninterpreted and Interpreted, with Labeled Channel 6-48 OFFSHORE LESS STUDIES Figure Pacific Gas and Electric Company

-120°45.5'

-120°45.5'

-120°46'

-120°46' 34°53.25' 34°53.25' 34°53' 34°53' Fw3

-120°45.5'

-120°45.5'

-120°46'

-120°46' 34°53.25' 34°53.25' 34°53' 34°53' Map projection and scale: WGS 84 / UTM Zone 10N, 1:10,000

+/-

0 0.2 0.4 mi.

0 0.25 0.5 km (b)

(a)

Figure extent Point Sal DCPP Figure extent File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-48_TimeSlice_0260.mxd; Date: 6/10/2014; User: Ranon Dulberg, Fugro; Rev.3 EXPLANATION Fault Channel F Hosgri central strand Hosgri western strand Hosgri eastern strand Channel thalweg mapped from seismic-reflection data 2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure 95 m +/- 20 m Ac2 Aw2 Hosgri East Hosgri West

-120°46.5'

-120°46.5'

-120°47'

-120°47'

-120°47.5'

-120°47.5' 34°56' 34°56' 34°55.5' 34°55.5' Channel A Offset and Uncertainty, HFZ East and West Strands 6-49 OFFSHORE LESS STUDIES Point Sal DCPP Figure extent EXPLANATION Source: Project DEM compilation v2013.07.

Ge Map projection and scale: WGS 84 / UTM Zone 10N, 1:9,500

+/-

0 0.15 0.3 mi.

0 0.25 0.5 km Channel Depth 116 ms

(~93 m) 340 ms

(~272 m)

File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-49_Ch_A_Offset.mxd; Date: 5/16/2014; User: Ranon Dulberg, Fugro; Rev.3 Channel thalweg mapped from seismic-reflection data Fault Hosgri western strand Hosgri eastern strand 2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

+

X Hosgri East Hosgri West Hosgri Central 193 m 356 m 510 m Be Bc

-120°46'

-120°46'

-120°46.5'

-120°46.5' 34°55' 34°55' 34°54.5' 34°54.5' Channel B Offset and Uncertainty, HFZ East and West Strands 6-50 OFFSHORE LESS STUDIES Point Sal DCPP Figure extent Pacific Gas and Electric Company Figure EXPLANATION Horizontal Offset Measurements Source: Project DEM compilation v2013.07.

Map projection and scale: WGS 84 / UTM Zone 10N, 1:9,500

+/-

0 0.15 0.3 mi.

0 0.25 0.5 km File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-50_Ch_B_Offset.mxd; Date: 7/16/2014; User: Ranon Dulberg, Fugro; Rev.3 Channel Depth 116 ms

(~93 m) 340 ms

(~272 m)

Channel thalweg mapped from seismic-reflection data Hosgri central strand Hosgri eastern strand Preferred Maximum X

Minimum

+

Hosgri western strand 2012 Point Sal 3D high-resolution survey extent Fault, dashed where inferred Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure X

+

X

+

Western Block (Santa Maria Basin)

Fe3 Fc1 Fw3 Eastern Block South Fe3-Fw3 600 to 650 +/- 50 m

(~550 to 700 m) 376 m 432 m 490 m 250 m 200 m 150 m Hosgri East Hosgri Central Hosgri West

-120°45'

-120°45'

-120°45.5'

-120°45.5' 34°53' 34°53' 34°52.5' 34°52.5' Preferred Channel F Offset and Uncertainty, HFZ East and West Strands 6-51a OFFSHORE LESS STUDIES Point Sal DCPP Figure extent Source: Project DEM compilation v2013.07.

Map projection and scale: WGS 84 / UTM Zone 10N, 1:9,500

+/-

0 0.15 0.3 mi.

0 0.25 0.5 km Channel Depth 126 ms

(~101 m) 340 ms

(~272 m)

File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-51a_Ch_F_Offset.mxd; Date: 6/10/2014; User: Ranon Dulberg, Fugro; Rev.3 EXPLANATION Horizontal Offset Measurements Channel thalweg mapped from seismic-reflection data Hosgri western strand Hosgri central strand Hosgri eastern strand Minimum

+

Maximum X

Preferred Channel thalweg projected across Hosgri fault splays Fault 2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure X

+

X

+

376 m Western Block (Santa Maria Basin) 432 m 490 m 116 m 64 m 0 m Fe1 Fc1 Fw3 Ee Ge Eastern Block South Fe1-Fw3 500 to 550 +/- 50 m

(~450 to 600 m)

Hosgri East Hosgri Central Hosgri West

-120°45'

-120°45'

-120°45.5'

-120°45.5' 34°53' 34°53' 34°52.5' 34°52.5' Channel F Offset and Uncertainty, HFZ East and West 6-51b OFFSHORE LESS STUDIES Point Sal DCPP Figure extent Source: Project DEM compilation v2013.07.

Map projection and scale: WGS 84 / UTM Zone 10N, 1:9,500

+/-

0 0.15 0.3 mi.

0 0.25 0.5 km Channel Depth 116 ms

(~93 m) 340 ms

(~272 m)

File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_6-51b_Ch_F_Offset.mxd; Date: 7/17/2014; User: Robert Dame, Fugro; Rev.3 EXPLANATION Horizontal Offset Measurements Channel thalweg mapped from seismic-reflection data Hosgri western strand Hosgri central strand Hosgri eastern strand Minimum

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Preferred Channel thalweg projected across Hosgri fault splays Fault 2012 Point Sal 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

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Alternative Age Models

~1.4 Ma EXPLANATION Sea-level curve Uncertainty Marine isotope stage, substage Point Sal paleochannels 5a Ac2, Aw2, Bc, Be Fw3, Fe3, Fc1 Bc, Be, Fw3, Fe3, Fc1 Ac2, Aw2 Ac2, Aw2, Bc, Be Notes:

1. See Figures 6-35 through 6-48 for illustrations of Point Sal paleochannels.
2. Sea-level curve modified from Waelbroeck et al. (2002).

Fw3, Fe3, Fc1 Pacific Gas and Electric Company Figure OFFSHORE LESS STUDIES 6-52a Filepath: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\ai\\Figure_6-52a_PaleochannelAgeModel.ai; Date: 07/23/2014; User: Bryan Bergkamp, Fugro; Rev.3 Preferred Age Model for Paleochannels, Point Sal Ch3.GEO.DCPP.TR.14.02 R0

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Preferred Max.

Alternative Age Models

~1.4 Ma EXPLANATION Sea-level curve Uncertainty Marine isotope stage, substage Point Sal paleochannels 5a Ac2, Aw2, Bc, Be Fw3, Fe1, Fc1 Bc, Be, Fw3, Fe1, Fc1 Ac2, Aw2 Ac2, Aw2, Bc, Be Notes:

1. See Figures 6-35 through 6-48 for illustrations of Point Sal paleochannels.
2. Sea-level curve modified from Waelbroeck et al. (2002).

Fw3, Fe1, Fc1 Pacific Gas and Electric Company Figure OFFSHORE LESS STUDIES 6-52b Filepath: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\ai\\Figure_6-52b_PaleochannelAgeModel.ai; Date: 07/23/2014; User: Bryan Bergkamp, Fugro; Rev.3 Alternative Age Model for Paleochannels, Point Sal Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure Stratigraphy of the Northern San Luis Obispo Bay Area 7-1 OFFSHORE LESS STUDIES Source: Modified from Hall (1973).

File path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\ai\\Figure_7-1_SLB_OffshoreStratColumn.ai; Date: 05/11/2014; User: Bryan Bergkamp, Fugro; Rev.3 0-200 ft.

0-40 ft.

100-500 ft.

> 2,000 ft. (?)

Unit Thickness Unnamed (QTp): Coastal floodplain deposits, including channelized fluvial (Paso Robles Fm?)

and deltaic deposits. Morphology varies from incised to braided to meandering style across survey area.

Lower unit characterized by stratified deltaic and/or nearshore deposits. Interfingers with marine shelf deposits onshore.

Holocene (Qs): Holocene marine shelf deposits.

Stratified sand, slits, and clay.

Franciscan Complex (KJf): Chaotic, unstratified assemblage of varying lithologies, including fine-grained metavolcanic rocks (with strong magnetic resistivity values), sheared claystone (melange matrix), glaucophane schist, and chert. Serpentine is included in the Franciscan Complex. Regionally, graywacke sandstone is a prominent component of the Franciscan Complex but is not common within the mapped area described in this report.

Cretaceous Sandstone (Ks): Well-bedded brown fine-to coarse-grained sandstone, moderately to very well lithified, generally quartz grains with minor feldspar and lithic grains. Also includes yellowish brown to black fissile shale, and dark brown fine-to medium-grained unstratified vesicular basalt and diabase. Abuts Franciscan Complex rock along faulted contacts.

Obispo Formation (Tmo): Resistant sub-unit (Tmor) is crudely bedded to unstratified, orange-brown to gray fine-grained zeolitized tuff, very well lithified, chaotic, unstratified intervals with basal scour and rare intervals of black silty sandstone. Fine-grained sub-unit (Tmof) is well-bedded light brown to gray sandstone and silty sandstone, coarsening gradually up-section, including abundant invervals of dolomitic sandstone and common intervals of diatoma-ceous and tuffaceous sandstones. Diabase sub-unit (Tmod) is brown aphanitic to phaneritic intrusive dikes and sills. Tuffaceous sub-unit (Tmot) is grouped with Tmor sub-unit along the coastline at DCPP but is mapped by Hall (1973a; 1973b) elsewhere in San Luis Obispo County.

Basal contact with Rincon Formation is not exposed along coastline but is mapped as conformable in the Irish Hills by Hall (1973a).

Contact with basement rock along coastline may be depositional, intrusive, or faulted.

Description s

ss vv ch ch sc sc sc sc mv mv mv mv cg cg cg cg Jfgw Jfgw Jfgw Jfgw Ksh Ksh Kcg Kcg Kss Kss K?v K?v Kcg Kcg Kcg Kcg Kss Kss Tmod Tmod Tmot Tmot Tmof Tmof Tmor Tmor Tmor Tmor Tmof Tmof Tmot Tmot QTp QTp Qs Qs Quaternary Unit Age Pleistocene Upper Pleistocene deposits unconformity (basal cgl) unconformity Neogene Miocene unconformity or fault Cretaceous Jurassic-Cretaceous faulted Franciscan Complex Obispo Formation Sandstone (also serpentine)

Holocene Marine silt and sand

-H10 Paleostrandlines H30-H40-Ch3.GEO.DCPP.TR.14.02 R0

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Ee Ec Gc Le Western block Eastern block Central block Los Berros fault North Pecho fault Ae Aw Be Bc Bw Ce Cc Cw De Fe Fc Fw Gc Hw Ic Iw Je Jc Ke Shoreline fault Southwest Boundary Zone f Pecho fault Oceano fault Unnamed fault

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-120°42'

-120°42'

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-120°46' 35°8' 35°8' 35°6' 35°6' Figure extent Smoothed Similarity Bedrock Surface, Uninterpreted and Interpreted, San Luis Obispo Bay Map projection and scale: WGS 84 / UTM Zone 10N, 1:40,000

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Fault File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-2_Bedrock_Similarity.mxd; Date: 6/30/2014; User: Ranon Dulberg, Fugro; Rev.3 Onlap of Upper Pleistocene deposits onto bedrock surface 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Shoreline fault Shoreline fault Los Berros fault Los Berros fault Oceano fault Oceano fault Pecho fault Pecho fault Unnamed faults Unnamed faults Souza Rock Souza Rock North Pecho fault North Pecho fault Pacific Gas and Electric Company Figure OFFSHORE LESS STUDIES 7-3 File path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\ai\\Figure_7-3_3D_BedrockSimilarity.ai; Date: 05/11/2014; User: Bryan Bergkamp, Fugro; Rev.3 3D Perspective of Smoothed Similarity Bedrock Surface San Luis Obispo Bay 35°8' DCPP Figure extent Point San Luis

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Ch3.GEO.DCPP.TR.14.02 R0

Bedrock Surface Showing Regional Paleochannel and Fault Geometry OFFSHORE LESS STUDIES Pacific Gas and Electric Company Arbitrary line locations (a) Uninterpreted H10 (b) Interpreted 3D Perspective of Dip of Maximum Similarity in the San Luis Obispo Bay 3D Survey Area EXPLANATION Mapped fault splay Horizon H10 Holocene sediments Paleochannel fill sediments Upper Pleistocene deposits by Oceano fault Oceano fault Upper Pleistocene deposits H10 Holocene sediments Shoreline fault Souza Rock Possible offset of H10 File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\pdf\\Figure-7-4-3D-Regional.pdf; Date: 07/17/2014; User: Robert Dame, Fugro; Rev. 3 7-4 Figure and arbitrary 2D seismic profile (c) 3D perspective view of shaded-relief bedrock surface 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Point San Luis Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Fe Upper Pleistocene deposits Fc Je Jc Ke Gc Ic Gc Bedrock Bedrock Channels

-120°42'

-120°42'

-120°43'

-120°43' 35°7' 35°6.5' 35°6.5' 35°6' 35°6' 35°5.5' 35°5.5' Point San Luis DCPP Figure extent Inclined Amplitudes Time Slice Showing Pre-Holocene Channels in Upper Pleistocene Deposits 7-5 OFFSHORE LESS STUDIES Map projection and scale: WGS 84 / UTM Zone 10N,1:16,000 EXPLANATION

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Figure File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-5_QuaternarySlice.mxd; Date: 6/30/2014; User: Ranon Dulberg, Fugro; Rev.3 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

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Oceano fault Shoreline fault

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Unnamed fault Limit of onlap of Upper Pleistocene deposits onto bedrock surface 10 20 30 40

-120°42'

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0 20 10 20 10 Oceano fault Shoreline fault Los Berros fault North Pecho fault Pecho fault Unnamed fault

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Unnamed fault Oceano fault Shoreline fault Western block Eastern block Central block Los Berros fault Souza Rock Pecho fault North Pecho fault

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-120°42'

-120°44'

-120°44'

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-120°46' 35°8' 35°8' 35°6' 35°6' Sediment Isopachs San Luis Obispo Bay (a) Quaternary sediment isopach Point San Luis DCPP Figure extent 7-6 OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure Notes:

1. Isopach values on map assume a velocity of 1,600 m/s.
2. Contour interval is 2 m. Heavy contours are 10 m.
3. See Section 3 for interpretation methodology and fault nomenclature.
4. Souza Rock bedrock surface mapped from Seafloor Mapping Lab of California State University Monterey Bay bathymetry.

Source: Project DEM Compilation v2013.07.

Map projection and scale: WGS 84 / UTM Zone 10N, 1:40,000

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2 km Isopach (meters) 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80 EXPLANATION Fault (c) Holocene sediment isopach Bedrock exposures at seafloor Onlap of Upper Pleistocene deposits onto bedrock surface File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-6_SedimentIsopachs.mxd; Date: 6/30/2014; User: Ranon Dulberg, Fugro; Rev.3 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

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Ee Ec Gc Le Western block Eastern block Central block South Pecho fault Los Berros fault North Pecho fault Ae Aw Be Bc Bw Ce Cc Cw De Fe Fc Fw Gc Hw Ic Iw Je Jc Ke Souza Rock Shoreline fault Southwest Boundary Zone f Oceano fault Unnamed fault

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-120°46' 35°8' 35°8' 35°6' 35°6' Figure extent Top of Bedrock Surface Structural Contour Map, Interpreted and Uninterpreted, San Luis Obispo Bay Map projection and scale: WGS 84 / UTM Zone 10N, 1:40,000

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2 km (a) Uninterpreted (b) Interpreted 7-7 OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure EXPLANATION File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-7_Bedrock_meters.mxd; Date: 6/30/2014; User: Ranon Dulberg, Fugro; Rev.3 Notes: 1. Contour interval is 2 m. Heavy contours are 10 m.

2. Souza Rock bedrock surface mapped from Seafloor Mapping Lab of California State University Monterey Bay bathymetry.

Fault Onlap of Upper Pleistocene deposits onto bedrock surface 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

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Pecho fault Los Berros fault North Pecho fault Shoreline fault Oceano fault

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Line 7608

-120°41'

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-120°45' 35°8' 35°8' 35°7' 35°7' 35°6' Point San Luis DCPP

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Map projection and scale: WGS 84 / UTM Zone 10N, 1:42,000 Figure extent Representative Line 7608 with Smoothed Similarity Bedrock Surface OFFSHORE LESS STUDIES (c)

Location Map 0

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1. Depth values on seismic profile assume a velocity of 1,600 m/s.
2. Locations of paleochannels referenced can be found on Plate 5.

Smoothed similarity 10 ms window bedrock surface Line 7608 7-8 Pacific Gas and Electric Company Figure File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-8_Line7608.mxd; Date: 7/17/2014; User: Robert Dame, Fugro; Rev.3 Line 7608 EXPLANATION Seafloor Unconformity H10 Top of bedrock Line 7608 Holocene sediment Channel fill 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Reverse fault; solid where well located, long dashed where approximately located, short dashed where inferred, dotted where concealed, queried where existence uncertain Quaternary fault; solid where well located, long dashed where approximately located, short dashed where inferred, dotted where concealed, queried where existence uncertain Ch3.GEO.DCPP.TR.14.02 R0

OFFSHORE LESS STUDIES Pacific Gas and Electric Company EXPLANATION Mapped fault splay Horizon H10 (a) Uninterpreted (b) Interpreted Oceano fault Bedrock Surface Showing Shoreline and Oceano Fault Geometry near Piercing Point A 3D Perspective of Dip of Maximum Similarity Shoreline fault Holocene sediments Paleochannel fill sediments Holocene sediments Paleochannel fill sediments H10 Souza Rock Pecho fault Nested Paleochannel A File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\pdf\\Figure-7-9-3D-PaleoA.pdf; Date: 07/17/2014; User: Robert Dame, Fugro; Rev. 3 7-9 Figure and arbitrary 2D seismic profile (c) 3D perspective view of shaded-relief bedrock surface 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Arbitrary line location Point San Luis Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure Oceano fault Pecho fault

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Line 8503 Shoreline fault U

Unnamed fault

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-120°42'

-120°42'

-120°44'

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-120°46' 35°6.5' 35°6.5' 35°5.5' 35°5.5' Point San Luis DCPP

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Map projection and scale: WGS 84 / UTM Zone 10N, 1:36,000 Figure extent Line 8503 with Smoothed Similarity Bedrock Surface Showing Shallow Stratigraphy OFFSHORE LESS STUDIES (c)

Note: Depth values on seismic profile assume a velocity of 1,600 m/s.

Location Map 0

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km Smoothed similarity 10 ms window bedrock surface Line 8503 7-10 EXPLANATION Seafloor Unconformity H10 Unconformity H30 Top of bedrock Line 8503 Holocene sediment File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-10_Line8503.mxd; Date: 7/17/2014; User: Robert Dame, Fugro; Rev.3 Line 8503 Upper Pleistocene deposits 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Reverse fault; solid where well located, long dashed where approximately located, short dashed where inferred, dotted where concealed, queried where existence uncertain Quaternary fault; solid where well located, long dashed where approximately located, short dashed where inferred, dotted where concealed, queried where existence uncertain Ch3.GEO.DCPP.TR.14.02 R0

Bedrock Surface Showing Oceano Fault and Quaternary Sediment Geometry in the OFFSHORE LESS STUDIES 7-11 Pacific Gas and Electric Company Figure Arbitrary line location (a) Uninterpreted Oceano fault scarp Possible offset of H10 by Oceano fault H10 Holocene Upper Pleistocene deposits sediments (b) Interpreted 3D Perspective of Dip of Maximum Similarity Eastern San Luis Bay 3D Survey Area EXPLANATION Mapped fault splay Horizon H10 Holocene sediments Paleochannel fill sediments Upper Pleistocene deposits and arbitrary 2D seismic profile (c) 3D perspective view of shaded-relief bedrock surface File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\pdf\\Figure-7-11-3D-Oceano.pdf; Date: 07/17/2014; User: Robert Dame, Fugro; Rev. 3 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Point San Luis Ch3.GEO.DCPP.TR.14.02 R0

Pecho fault NW SE Oceano fault Shoreline fault Limits of onlap of Upper Pleistocene deposits onto bedrock surface Crossline 1251

-120°43'

-120°43'

-120°45'

-120°45' 35°7' 35°7' 35°6' 35°6' Point San Luis DCPP

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Map projection and scale: WGS 84 / UTM Zone 10N, 1:28,000 Figure extent Representative Crossline 1251 with Smoothed Similarity Bedrock Surface OFFSHORE LESS STUDIES (c)

Notes:

1. Depth values on seismic profile assume a velocity of 1,600 m/s.
2. Locations of paleochannels referenced can be found on Plate 5.

Location Map 0

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Crossline 1251 EXPLANATION Seafloor Unconformity H10 Top of bedrock Holocene sediment Channel fill Crossline 1251 File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-12_Crossline1251.mxd; Date: 7/17/2014; User: R.Dame, Fugro; Rev.3 Upper Pleistocene deposits Onlap of Upper Pleistocene deposits onto bedrock surface Reverse fault; solid where well located, long dashed where approximately located, short dashed where inferred, dotted where concealed, queried where existence uncertain Quaternary fault; solid where well located, long dashed where approximately located, short dashed where inferred, dotted where concealed, queried where existence uncertain 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

OFFSHORE LESS STUDIES Pacific Gas and Electric Company Arbitrary line location (b) Interpreted (a) Uninterpreted Shoreline fault Upper Pleistocene deposits EXPLANATION Mapped fault splay Horizon H10 Holocene sediments Paleochannel fill sediments Upper Pleistocene deposits H10 Bedrock Surface Showing Shoreline Fault Geometry near Quaternary Paleoshorelines 3D Perspective of Dip of Maximum Similarity in Southern San Luis Obispo Bay Holocene sediments Souza Rock 7-13 Figure and arbitrary 2D seismic profile (c) 3D perspective view of shaded-relief bedrock surface File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\pdf\\Figure-7-13-3D-PaleoShoreline.pdf; Date: 07/17/20104; User: Robert Dame, Fugro; Rev. 3 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Point San Luis Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure



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PBS-10

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Pecho fault Oceano fault Shoreline fault Central Unnamed fault Los Berros fault North Pecho fault South Pecho fault Oceano fault Hosgri fault zone

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Nekton-229 PBS-09 PBS-279A SM-5A CoMap 86-3 PBS-283 PXP Price Canyon DCPP

-120°35'

-120°35'

-120°40'

-120°40'

-120°45'

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-120°50'

-120°50'

-120°55' 35°10' 35°10' 35°5' 35°5' 35°0' 35°0' DCPP Source: PG&E DEM compilation v2013.07.

Figure extent San Luis Obispo Bay Fault Map with Magnetic Data 7-14 OFFSHORE LESS STUDIES Map projection: WGS 84 / UTM Zone 10N Map scale: 1:175,000

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Figure Pacific Gas and Electric Company 4

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San Luis Obispo Bay Shoreline fault zone Wilmar Avenue fault Oceano fault Hosgri fault zone 01A Pecho fault Pecho fault PBS-10 PXP Price Canyon PBS-283 CoMAP 86-3 PBS-09 SM-5A SM-5A PBS-279A NEKTON-229

-120°40'

-120°40'

-120°50'

-120°50' 35°10' 35°10' 35°0' 35°0' 1:145,000 DCPP San Luis Obispo Bay Fault Map Comparison 7-15 OFFSHORE LESS STUDIES

Hosgri fault zone San Luis Obispo Bay

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Santa Maria River Oceano fault Unnamed faults South Pecho fault Los Berros fault Central unnamed fault Shoreline fault zone Oceano fault North Pecho fault Shoreline fault Pecho fault Wilmar Avenue fault

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Santa Maria River fault

-120°40'

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-120°50'

-120°50' 35°10' 35°10' 35°0' 35°0' Figure extent (a) Previous mapping from Lettis et al. (2004), PG&E (2011),

and Willingham et al. (2013)

(b) Revised mapping (this study), DWR (2002), PG&E (2011),USGS (Johnson and Watt, 2012),

PG&E (2013), Willingham et al. (2013), and Lettis et al. (2014)

Notes:

1. In frame (b): Inside San Luis Obispo Bay 3D high-resolution survey boundary fault mapping from previous studies not displayed.
2. Onshore faults not mapped as part of this study.

Sources:

- PG&E DEM compilation v2013.07.

-Quaternary faults based on results of this and previous studies.

Fault traces modified from California Division of Oil, Gas, and Geothermal Resources (1992), Department of Water Resources (2002), Lettis et al. (2004), Shoreline Fault Report (PG&E, 2011), Johnson and Watt (2012), Seismic Stratigraphy Report (PG&E, 2013), Willingham et al. (2013), and Onshore Geologic Mapping Study (PG&E, 2014).

Map projection and scale: WGS 84 / UTM Zone 10N, 1:45,000

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Pacific Gas and Electric Company Figure DCPP PBS-09 Point San Luis Uninterpreted Interpreted Line PBS-09 7-16 OFFSHORE LESS STUDIES EXPLANATION (b)

(a)

Note: See Figure 7-14 for seismic section location.

Source: PG&E legacy data archive.

Line location Top of bedrock H10 File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-16_PBS-09.mxd; Date: 6/12/2014; User: Ranon Dulberg, Fugro; Rev.3 Fault, dashed where inferred 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure DCPP Uninterpreted Interpreted Line CoMAP 86-3 7-17 OFFSHORE LESS STUDIES (b)

(a)

Note: See Figure 7-14 for seismic section location.

Source: PG&E legacy data archive.

EXPLANATION Fault CoMAP 86-3 Line location Top of bedrock Point San Luis File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-17_CoMap_83-3.mxd; Date: 6/12/2014; User: Ranon Dulberg, Fugro; Rev.3 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

USGS Line PBS-10 Showing Offset of Upper Pleistocene Deposits by Los Berros Fault OFFSHORE LESS STUDIES Pacific Gas and Electric Company EXPLANATION Mapped fault splay Top of bedrock Top of Upper Pleistocene deposits 600.0 700.0 800.0 900.0 1000.0 1100.0 1200.0 1300.0 1400.0 1500.0 1600.0 1700.0 1800.0 1900.0 2000.0 SP:

00.000 0.100 0.200 600.0 700.0 800.0 900.0 1000.0 1100.0 1200.0 1300.0 1400.0 1500.0 1600.0 1700.0 1800.0 1900.0 2000.0 SP:

00.000 0.100 0.200 in San Luis Obispo Bay (a) Uninterpreted (b) Interpreted Two-Way Travel Time (Seconds)

Two-Way Travel Time (Seconds) 250 m SW NE SW NE 250 m Top of Upper Pleistocene deposits Top of bedrock Los Berros fault 7-18 Figure File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\pdf\\Figure-7-18-PBS-10.pdf; Date: 07/17/2014; User: Robert Dame, Fugro; Rev. 3 Line location Point San Luis 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Point Sal Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure DCPP PBS-283 Uninterpreted Interpreted Line PBS-283 7-19 OFFSHORE LESS STUDIES (a)

(b)

EXPLANATION Note: See Figure 7-14 for seismic section location.

Source: PG&E legacy data archive.

File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-19_PBS-283.mxd; Date: 6/12/2014; User: Ranon Dulberg, Fugro; Rev.3 Point San Luis Unconformity H30 Unconformity H10 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Fault, dashed where inferred Ch3.GEO.DCPP.TR.14.02 R0

Uninterpreted 3D Regional Perspective of Major Structures Between Irish Hills and OFFSHORE LESS STUDIES Pacific Gas and Electric Company Avila Beach Avila Beach Shell Beach Shell Beach Pismo Beach Pismo Beach DCPP DCPP Los Osos Domain Los Osos Domain Santa Maria Basin Santa Maria Basin Southwestern Boundary Zone Southwestern Boundary Zone Seismic data gap Seismic data gap EXPLANATION 0.100 0.200 0.300 0.400 0.500 0.600 0.700 0.800 0.900 1.000 Approximate Two-Way Travel Time (Seconds) 250 m 500 m Approximate figure extent Nekton Line 229 Nekton Line 229 CoMAP Line 3 CoMAP Line 3 2011 PG&E Price Canyon Line 2011 PG&E Price Canyon Line 120 m isobath 120 m isobath DCPP DCPP Irish Hills Irish Hills Hosgri Fault in San Luis Obispo Bay Pismo Beach Pismo Beach Avila Beach Avila Beach Shell Beach Shell Beach File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\pdf\\Figure-7-20-RegionalSLB.pdf; Date: 05/16/2014; User: Robert Dame, Fugro; Rev. 3 7-20a Figure 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Point San Luis Point Sal Ch3.GEO.DCPP.TR.14.02 R0

Interpreted 3D Regional Perspective of Major Structures Between Irish Hills and OFFSHORE LESS STUDIES Pacific Gas and Electric Company Avila Beach Avila Beach Shell Beach Shell Beach Pismo Beach Pismo Beach DCPP DCPP Wilmar Avenue fault Wilmar Avenue fault Los Osos fault Los Osos fault Los Berros fault Los Berros fault Oceano fault Oceano fault Shoreline fault Shoreline fault Hosgri fault zone Hosgri fault zone Los Osos Domain Los Osos Domain Santa Maria Basin Santa Maria Basin Southwestern Boundary Zone Southwestern Boundary Zone Seismic data gap Seismic data gap EXPLANATION Mapped fault splay (Fugro Consultants, 2014) 0.100 0.200 0.300 0.400 0.500 0.600 0.700 0.800 0.900 1.000 Approximate Two-Way Travel Time (Seconds) 250 m 500 m Approximate figure extent Nekton Line 229 Nekton Line 229 CoMAP Line 3 CoMAP Line 3 2011 PG&E Price Canyon Line 2011 PG&E Price Canyon Line 120 m isobath 120 m isobath DCPP DCPP Irish Hills Irish Hills Edna fault Edna fault Hosgri Fault in San Luis Obispo Bay Pismo Beach Pismo Beach Avila Beach Avila Beach Shell Beach Shell Beach Top of bedrock File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\pdf\\Figure-7-20-RegionalSLB.pdf; Date: 05/16/2014; User: Robert Dame, Fugro; Rev. 3 7-20b Figure South Pecho fault South Pecho fault 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Point San Luis Point Sal Ch3.GEO.DCPP.TR.14.02 R0

Uninterpreted South Pecho and Shoreline Fault Seismic Fence Diagram OFFSHORE LESS STUDIES Pacific Gas and Electric Company TW T (s)

T A

(a) Uninterpreted 2D seismic profiles showing Shoreline and South Pecho fault geometry in southern San Luis Obispo Bay 0.000 0.250 0.500 0.750 1.000

?

?

?

?

?

?

?

0 2

4 1

km 0

1 2

0.5 mi

A A

A B

B C

C D

D Nekton 164-92 Nekton 164-96 Nekton 164-100 Nekton 164-102 1,000 m (b) 2D seismic trackline location map (b) 2D seismic trackline location map A

A B

B C

C D

D South Pecho fault Shoreline fault Casmalia fault zone 7-21a Figure Ne o

6 9

kt n 1 4-2 Ne on 16 -9 kt 4

6 Ne ton 164-100 k

Ne o

6 1

kt n 1 4- 02 Extent of Figure G-7 c) Approximate figure extent

(

^DCPP Point San Luis Point Sal EXPLANATION 2011/2012 San Luis Obispo Bay/Pt. Sal 3D high-resolution survey extent File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\pdf\\Figure-7-21a-ShorelineSouthFenceDiagram.pdf; Date: 07/17/2014; User: Robert Dame, Fugro; Rev. 3 Ch3.GEO.DCPP.TR.14.02 R0

Interpreted South Pecho and Shoreline Fault Seismic Fence Diagram OFFSHORE LESS STUDIES EXPLANATION Seafloor Top of bedrock Fault Pacific Gas and Electric Company TW T (s)

T A

(a) Interpreted 2D seismic profiles showing Shoreline and South Pecho fault geometry in southern San Luis Obispo Bay 0.000 0.250 0.500 0.750 1.000

?

?

?

?

?

?

?

0 2

4 1

km 0

1 2

0.5 mi

A A

A B

B C

C D

D Nekton 164-92 Nekton 164-96 Nekton 164-100 Nekton 164-102 1,000 m (b) 2D seismic trackline location map (b) 2D seismic trackline location map A

A B

B C

C D

D South Pecho fault Shoreline fault Casmalia fault zone c) Approximate figure extent

(

7-21b Figure Ne o

6 9

kt n 1 4-2 Ne on 16 -9 kt 4

6 Ne ton 164-100 k

Ne o

6 1

kt n 1 4- 02 Extent of Figure G-7

^DCPP 2011/2012 San Luis Obispo Bay/Pt. Sal 3D high-resolution survey extent Point San Luis Point Sal File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\pdf\\Figure-7-21b-ShorelineSouthFenceDiagram.pdf; Date: 07/17/2014; User: Robert Dame, Fugro; Rev. 3 Ch3.GEO.DCPP.TR.14.02 R0

(

(

(

(

(

(

(

(

(

(

(

(

(

Ee Ec Gc Paleostrandline Souza Rock Ae Aw Be Bc Bw Ce Cc Cw De Fe Fc Fw Gc Hw Ic Iw Je Jc Western block Central block Eastern block Ke Unnamed fault Oceano fault Shoreline fault Pecho fault Los Berros fault North Pecho fault

?

?

?

?

-120°42'

-120°42'

-120°44'

-120°44'

-120°46'

-120°46' 35°8' 35°8' 35°6' 35°6' Point San Luis DCPP Souza Rock

-120°42'

-120°42'

-120°44'

-120°44'

-120°46'

-120°46' 35°8' 35°8' 35°6' 35°6' Figure extent Amplitude Inclined Slice, Uninterpreted and Interpreted, with Faults, Paleochannels, and Paleoshoreline, San Luis Obispo Bay 7-22 (a) Uninterpreted (b) Interpreted OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure Map projection and scale: WGS 84 / UTM Zone 10N, 1:40,000

+/-

0 0.5 1

0.25 mi.

0 1

2 0.5 km EXPLANATION File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-22_Paleoshoreline.mxd; Date: 6/11/2014; User: Ranon Dulberg, Fugro; Rev.3 Paleoshoreline 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Fault, dashed where inferred Ch3.GEO.DCPP.TR.14.02 R0

(

(

(

(

(

(

(

(

(

(

(

?

?

?

North Pecho fault

-100

-90

-120

-70

-60

-50

-80

-50

-60

-100

-80

-90

-90

-50

-40

-110

-40

-50

-70

-70

-50

-80

-60 Eastern block Western block Central block Source Channel Complex 1 Source Channel Complex 2 Source Channel Complex 3 Pecho fault Oceano fault Los Berros fault Central unnamed fault Shoreline fault

?

7-33 7-36 7-39 7-41 7-37 7-40 7-42 7-38 7-29

-120°42'

-120°42'

-120°44'

-120°44'

-120°46'

-120°46' 35°8' 35°8' 35°6' 35°6' EXPLANATION Fault Channel thalweg Piercing point DCPP Notes:

1. Depth values on grid assume a velocity of 1,600 m/sec.
2. Relative age within each source channel complex.

Source: PG&E DEM compilation v2013.07.

Figure extent San Luis Obispo Bay Piercing Points OFFSHORE LESS STUDIES 7-23 Pacific Gas and Electric Company Figure Map projection and scale: WGS 84 / UTM Zone 10N, 1:48,000

+/-

0 0.5 1

mi.

0 1

2 km File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-23_PiercingPoints.mxd; Date: 6/12/2014; User: Ranon Dulberg, Fugro; Rev.3 Point Sal Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure

-90

-80

-100

-90

-80

-90

-90

-90

-80

-80

-120°43'

-120°43' 35°5.5' 35°5.5' 35°5' 35°5' EXPLANATION Paleostrandline

-79 m

-84 m

-92 m

-97 m Fault (a)

Uninterpreted (b)

Interpreted Shoreline fault

-97

-92

-84

-79

-92

-120°43'

-120°43' 35°5.5' 35°5.5' 35°5' 35°5' Map projection and scale: WGS 84 / UTM Zone 10N, 1:11,000 Notes:

1. Contour interval is 2 m. Major contours are 10 m.
2. Depths calculated using method described in Section 3.

Figure extent Gridded Contoured Plan View Shorelines 7-24 OFFSHORE LESS STUDIES

+/-

0 500 1,000 250 ft.

0 100 200 300 50 m

File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-24_Paleostrandline.mxd; Date: 5/12/2014; User: Ranon Dulberg, Fugro; Rev.3 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Point San Luis Ch3.GEO.DCPP.TR.14.02 R0

-120°43'

-120°43'

-120°44'

-120°44' 35°5.5' 35°5.5' 35°5' 35°5' DCPP (a)

Uninterpreted (b)

Interpreted Shoreline fault

-120°43'

-120°43'

-120°44'

-120°44' 35°5.5' 35°5.5' 35°5' 35°5' Map projection and scale: WGS 84 / UTM Zone 10N, 1:20,000 Figure extent Amplitude Time Slice at 105.3 ms with 84 m Paleoshoreline and Shoreline Fault OFFSHORE LESS STUDIES

+/-

0 1,000 2,000 500 ft.

0 200 400 600 100 m

7-25 Pacific Gas and Electric Company Figure File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-25_Paleoshoreline_1053.mxd; Date: 6/12/2014; User: Ranon Dulberg, Fugro; Rev.3 Point San Luis EXPLANATION Paleoshoreline Fault 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

-120°43'

-120°43'

-120°44'

-120°44' 35°5.5' 35°5.5' 35°5' 35°5' DCPP (a)

Uninterpreted (b)

Interpreted Shoreline fault

-120°43'

-120°43'

-120°44'

-120°44' 35°5.5' 35°5.5' 35°5' 35°5' Map projection and scale: WGS 84 / UTM Zone 10N, 1:17,000 Figure extent Amplitude Time Slice at 119.3 ms with 92 m Paleoshoreline and Shoreline Fault 7-26 OFFSHORE LESS STUDIES

+/-

0 1,000 2,000 500 ft.

0 200 400 600 100 m

Pacific Gas and Electric Company Figure File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-26_Paleoshoreline_1193.mxd; Date: 5/12/2014; User: Ranon Dulberg, Fugro; Rev.3 EXPLANATION Paleoshoreline Fault Point San Luis 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Line PBS-279A DCPP Line location Excerpt of Line PBS-279A Showing Paleostrandline and Regional Unconformities San Luis Obispo Bay 7-27 OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure Note: Depth values on seismic profile assume a velocity of 1,600 m/s.

EXPLANATION Unconformity H10 Unconformity H30 Unconformity H40 File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-27_PBS-279A.mxd; Date: 7/15/2014; User: R. Dame, Fugro; Rev.3 Paleoshoreline (H35)

Top of bedrock 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

SW NE Shoreline fault Line 8752 DCPP

+/-

Map projection and scale: WGS 84 / UTM Zone 10N, 1:24,000 Figure extent 7-28 Excerpt of Line 8752 and Amplitudes Time Slice at 105.3 ms Showing Paleoshoreline Offset OFFSHORE LESS STUDIES (a)

(b)

(c)

Note: Depth values on seismic profile assume a velocity of 1,600 m/s.

Location Map 0

0.5 1

mi.

0 0.5 1

km Amplitudes time slice 105.3 ms Line 8752 Pacific Gas and Electric Company Figure EXPLANATION Fault Seafloor Unconformity H10 Unconformity H30 Top of bedrock Line 8752 Holocene sediment Paleoshoreline File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-28_Paleoshoreline_Line8752.mxd; Date: 7/15/2014; User: R. Dame, Fugro; Rev.3 Upper Pleistocene deposits 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

DCPP EXPLANATION Shoreline fault (a)

Uninterpreted (b)

Interpreted 9.4 m +/- 6 m Shoreline fault Map projection and scale: WGS 84 / UTM Zone 10N,1:2,850 Figure extent Amplitude Time Slice at 119.3 ms with Paleoshoreline and Shoreline Fault Offset Measurement 7-29 OFFSHORE LESS STUDIES

+/-

0 100 200 ft.

0 50 100 m

Pacific Gas and Electric Company Figure File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-29_Shoreline.mxd; Date: 6/12/2014; User: Ranon Dulberg, Fugro; Rev.3 Point San Luis 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

San Luis Obispo Bay Source Channel Complex One, Two, and Three Watersheds 7-30 OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure Map projection and scale: WGS 84 / UTM Zone 10N, San Luis Obispo Creek Watershed Pismo Creek Watershed San Luis Obispo Bay Point San Luis Source Channel Complex 1 Source Channel Complex 2 Source Channel Complex 3 (locally sourced)

Top of bedrock

=

=

-120°40'

-120°40'

-120°45'

-120°45' 35°10' 35°10' 35°5' 35°5' 1:96,000

+/-

0 2

4 mi.

0 2

4 km DCPP Figure extent Notes:

1. See Plate 6 for paleochannel profiles.
2. See Plate 5 for contoured bedrock surface.
3. PG&E DEM compilation v2013.07.

File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-30_WaterSheds.mxd; Date: 5/23/2014; User: Ranon Dulberg, Fugro; Rev.3 Point Sal EXPLANATION Paleochannel flow pathway Creek 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure File path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\ai\\Figure_7-31_3D_ChannelMorphology.ai; Date: 05/11/2014; User: Bryan Bergkamp, Fugro; Rev.3 Amplitude Bench-Cut Volume 3D Perspective View Showing Paleochannel Morphology 7-31 OFFSHORE LESS STUDIES Oceano fault Oceano fault Shoreline fault Shoreline fault Aw Aw Ae Ae Gc Gc Ic Ic Hw Hw Fc Fc Fw Fw Fe Fe Cc Cc Bc Bc Cw Cw De De Ee Ee Je Je Jc Jc Ke Ke Le Le Be Be Ce Ce Upper Pleistocene sediments Upper Pleistocene sediments Bedrock Bedrock Bedrock contact Bedrock contact Bedrock contact Bedrock contact Souza Rock Souza Rock Ch3.GEO.DCPP.TR.14.02 R0

Seconds 0.013 0.018 0.023 0.028 0.032 0.037 0.042 0.047 0.052 0.057 0.062 0.066 0.071 0.076 0.081 0.086 0.091 0.096 0.101 Pacific Gas and Electric Company Figure File path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\ai\\Figure_7-32_3D_ChannelFill.ai; Date: 05/11/2014; User: Bryan Bergkamp, Fugro; Rev.3 Bedrock Surface 3D Perspective with Amplitudes Time Slice at 0.0703 s of Filled and Unfilled Channels 7-32 OFFSHORE LESS STUDIES

+/-

De Ae Aw Be Ce Souza Rock Note: Souza rock bedrock surface mapped from Seafloor Mapping Lab of California State University Monterey Bay bathymetry.

35°8' DCPP Figure extent Point San Luis Ch3.GEO.DCPP.TR.14.02 R0

(

(

(

(

(

(

(

(

(

(

(

(

Souza Rock

-10

-60

-60

-60 Ae Ce Be Aw Los Berros fault Shoreline fault

-20

-40 50

-60

-50

-50

-40

-50

-30

-50

-50

-60

-50 Oceano fault C

B A

C' B'

A'

-120°44.25'

-120°44.25'

-120°44.5'

-120°44.5'

-120°44.75'

-120°44.75' 35°8' 35°8' 35°7.75' 35°7.75' Channel A - Shoreline and Oceano Faults Piercing Points OFFSHORE LESS STUDIES (b) Interpreted Souza Rock Ae Ce Be Aw Los Berros fault Shoreline fault Oceano fault Oceano fault

-120°44.25'

-120°44.25'

-120°44.5'

-120°44.5'

-120°44.75'

-120°44.75' 35°8' 35°8' 35°7.75' 35°7.75' Ae Ce Be Aw Souza Rock 40 m +/- 10m 20 +/- 10 m

-120°44.25'

-120°44.25'

-120°44.5'

-120°44.5'

-120°44.75'

-120°44.75' 35°8' 35°8' 35°7.75' 35°7.75' Notes:

1. See Figure 7-23 for piercing point location.
2. See Section 3.3 for description of channel nomenclature.
3. Contour interval is 2 m. Major contours are 10 m.
4. Depth values on grid assume a velocity of 1,600 m/s.
5. Souza Rock bedrock surface and slope mapped from Seafloor Mapping Lab of California State University Monterey Bay bathymetry.

(g) 3D bedrock surface (b) Bedrock slope (a) Smoothed similarity time slice at 0.073 s (c) Bedrock surface EXPLANATION Seafloor Unconformity H10 Top of bedrock Holocene sediment Channel fill Fault Channel thalweg Channel margins Arbitrary line Nested channel 7-33 Pacific Gas and Electric Company Figure Figure extent Aw Ae 1:7,500 Map projection and scale: WGS 84 / UTM Zone 10N,

+/-

0 0.1 0.2 mi.

0 0.2 0.4 km File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-33_SFChannelA.mxd; Date: 7/15/2014; User: R. Dame, Fugro; Rev.3 Point San Luis 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Ch3.GEO.DCPP.TR.14.02 R0

3D Perspective of Channel A-Shoreline Fault Thalweg Piercing Point OFFSHORE LESS STUDIES Similarity map projection: WGS 84 / UTM Zone 10N Notes:

1. See Figure 7-23 for piercing point location.
2. See Section 3.3 for description of channel nomenclature.
3. Contour interval is 1 m.
4. Depth values on grid assume a velocity of 1,600 m/s.

Pacific Gas and Electric Company Figure extent EXPLANATION Mapped fault splay 1 m bedrock surface contour Channel A thalweg, downslope Top of Bedrock Surface Meters below sea surface Max : 64 Min : 41 Shoreline fault Oceano fault 25 m 25 m 705300 705550 705800 706050 X/Y:

Meters 3889550 3889800 3890050 705300 705550 705800 706050 X/Y:

Meters 3889550 3889800 3890050 705300 705550 705800 706050 X/Y:

Meters 3889550 3889800 3890050 705300 705550 705800 706050 X/Y:

Meters 3889550 3889800 3890050 Uninterpreted Similarity Surface Interpreted Similarity Surface Inferred fault splay File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\pdf\\Figure-7-34-PaleoA-3D.pdf; Date: 07/17/2014; User: Robert Dame, Fugro; Rev. 3 7-34 Figure 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Point San Luis direction indicated by arrow Ch3.GEO.DCPP.TR.14.02 R0

20 +/- 10 m 40 +/- 10 m

-120°44.5'

-120°44.5'

-120°44.583'

-120°44.583' 35°7.917' 35°7.917' 35°7.833' 35°7.833' 35°7.75' 35°7.75' 35°7.667' 35°7.667' 54 52 53 55 51 56 50 49 57 54 50 55 52 51 54 56 54 50 53 54 55 51 54 54 50

-120°44.5'

-120°44.5'

-120°44.583'

-120°44.583' 35°7.917' 35°7.917' 35°7.833' 35°7.833' 35°7.75' 35°7.75' 35°7.667' 35°7.667' 2

1 3

4 5

51 52 53 54 55 56 57 58 50 49 59 60 61 48 47 62 63 46 45 44 47 51 45 51 50 46 59 48 48 57 52 55 62 56 54 48 50 49 51 53 47 62

-120°44.5'

-120°44.5'

-120°44.583'

-120°44.583' 35°7.917' 35°7.917' 35°7.833' 35°7.833' 35°7.75' 35°7.75' 35°7.667' 35°7.667' Figure extent Channel Complex A -

Shoreline Fault Zone Piercing Points (a) Channel A Bedrock surface (b) Nested Channel A surface 7-35 OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure Notes:

1. Contour interval is 1 m.
2. Depth values on grid assume a velocity of 1,600 m/s.

(c) Amplitudes time slice at 0.0725 seconds 30 +/- 10 m EXPLANATION Map projection and scale: WGS 84 / UTM Zone 10N, 1:2,500

+/-

0 250 500 ft.

0 50 100 m

File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-35_ChannelA.mxd; Date: 7/17/2014; User: Robert Dame, Fugro; Rev.3 Point San Luis Fault Concealed Approximate 2011/2012 San Luis Bay 3D high-resolution survey extent Channel A thalweg, flow direction indicated by arrow Nested Channel A thalweg Ch3.GEO.DCPP.TR.14.02 R0

De Aw Cw Bw Bc Cc Ee Ec

-120°44'

-120°44'

-120°44.25'

-120°44.25' 35°7.25' 35°7.25' 35°7' 35°7' 70

-60

-60

-60

-70

-70

-60

-60

-70 Aw Cw Bw Bc Cc Ee Ec De C

B A

C' B'

A' Oceano fault North Pecho fault Oceano fault

-120°44'

-120°44'

-120°44.25'

-120°44.25' 35°7.25' 35°7.25' 35°7' 35°7' Ee De Ec Bc Cc Cw Bw Aw Shoreline fault Oceano fault North Pecho fault Oceano fault

-120°44'

-120°44'

-120°44.25'

-120°44.25' 35°7.25' 35°7.25' 35°7' 35°7' Figure extent Channels B and C-Shoreline Fault Piercing Points 7-36 OFFSHORE LESS STUDIES (a) Smoothed similarity time slice at 0.083 s (c) Bedrock surface (g) 3D bedrock surface Bc Bw Aw Cc (b) Bedrock slope Cw Notes:

1. See Figure 7-23 for piercing point location.
2. See Section 3.3 for description of channel nomenclature.
3. Contour interval is 2 m. Major contours are 10 m.
4. Depth values on grid assume a velocity of 1,600 m/s.

1:7,500 Map projection and scale: WGS 84 / UTM Zone 10N,

+/-

0 0.1 0.2 mi.

0 0.2 0.4 km Pacific Gas and Electric Company Figure File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-36_SFChannelBC.mxd; Date: 7/15/2014; User: R. Dame, Fugro; Rev.3 EXPLANATION Seafloor Unconformity H10 Top of bedrock Holocene sediment Channel fill Channel thalweg Channel margins Fault 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Arbitrary line Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure Hw Fw Gc Fc 35°6' 35°6'

-70

-70

-70

-80

-70 Fc Fw Gc Hw Shoreline fault Unnamed fault A

C B

C' A'

B' 35°6' 35°6' Figure extent Channels F, G, and H-Shoreline Fault Piercing Points 7-37 OFFSHORE LESS STUDIES (a) Smoothed similarity time slice at 0.0920 s Hw Fw Gc Fc Shoreline fault Unnamed fault 35°6' 35°6' (c) Bedrock surface EXPLANATION Seafloor Unconformity H10 Top of bedrock Holocene sediment Channel fill Fault Channel thalweg Channel margins Arbitrary line (g) 3D bedrock surface Notes:

1. See Figure 7-23 for piercing point location.
2. See Section 3.3 for description of channel nomenclature.
3. Contour interval is 2 m. Major contours are 10 m.
4. Depth values on grid assume a velocity of 1,600 m/sec.

Fw Fc Gc Hw 1:7,500 Map projection and scale: WGS 84 / UTM Zone 10N,

+/-

0 0.1 0.2 mi.

0 0.2 0.4 km (b) Bedrock slope 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-37_SFChannelFGH.mxd; Date: 7/15/2014; User: R. Dame, Fugro; Rev.3 Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure Fw Iw Ic 35°6' 35°6'

-80

-90

-80

-70

-80 Fw Iw Ic Shoreline fault C

B A

C' B'

A' 35°6' 35°6' Figure extent Channel I - Shoreline Faul Piercing Point 7-38 OFFSHORE LESS STUDIES (a) Smoothed similarity time slice at 0.103 s Fw Iw Ic Shoreline fault 35°6' 35°6' (c) Bedrock surface EXPLANATION Seafloor Unconformity H10 Top of bedrock Holocene sediment Channel fill Upper Pleistocene deposits Fault Channel thalweg Channel margins Arbitrary line (g) 3D bedrock surface Notes:

1. See Figure 7-23 for piercing point location.
2. See Section 3.3 for description of channel nomenclature.
3. Contour interval is 2 m. Major contours are 10 m.
4. Depth values on grid assume a velocity of 1,600 m/s.

Iw Ic (b) Bedrock slope File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-38_SFChannelI.mxd; Date: 7/15/2014; User: R. Dame, Fugro; Rev.3 2011/2012 San Luis Obispo Bay 3Dhigh-resolution survey extent Map projection and scale: WGS 84 / UTM Zone 10N, 1:7,500

+/-

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0 0.2 0.4 km Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure Ec Cc Bc Be Ce Ee De

-120°44'

-120°44'

-50

-60

-5

-70

-60

-50

-60 De Ee Ce Be Bc Cc Ec Oceano fault Shoreline fault Oceano fault C

B A

C' B'

A'

-120°44'

-120°44' Figure extent Channels B, C, D, and E-Oceano Fault Piercing Points 7-39 OFFSHORE LESS STUDIES (a) Smoothed similarity time slice at 0.073 s Ec Cc Bc Be Ce Ee De Oceano fault Shoreline fault Oceano fault

-120°44'

-120°44' (c) Bedrock surface EXPLANATION Seafloor Unconformity H10 Top of bedrock Holocene sediment Channel fill Fault Channel thalweg Channel margins Arbitrary line (g) 3D bedrock surface Notes:

1. See Figure 7-23 for piercing point location.
2. See Section 3.3 for description of channel nomenclature.
3. Contour interval is 2 m. Major contours are 10 m.
4. Depth values on grid assume a velocity of 1,600 m/s.

Bc De (b) Bedrock slope Ee Ec Ce Be Cc File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-39_OFChannelBCDE.mxd; Date: 7/15/2014; User: R. Dame, Fugro; Rev.3 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Map projection and scale: WGS 84 / UTM Zone 10N, 1:7,500

+/-

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0 0.2 0.4 km Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure Gc Fc Ic Fe

-70

-60

-60 Fe Fc Gc Ic C

B A

C' B'

A' Unnamed fault Figure extent Channel F-Oceano Fault Piercing Point 7-40 OFFSHORE LESS STUDIES (a) Smoothed similarity time slice at 0.0755 s Ic Gc Fc Fe Oceano fault Unnamed fault (c) Bedrock surface EXPLANATION Seafloor Unconformity H10 Top of bedrock Holocene sediment Channel fill Fault Channel thalweg Channel margins (g) 3D bedrock surface Notes:

1. See Figure 7-23 for piercing point location.
2. See Section 3.3 for description of channel nomenclature.
3. Contour interval is 2 m. Major contours are 10 m.
4. Depth values on grid assume a velocity of 1,600 m/s.

Fc (b) Bedrock slope Gc Fe Ic 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-40_OFChannelF.mxd; Date: 7/15/2014; User: R. Dame, Fugro; Rev.3 Map projection and scale: WGS 84 / UTM Zone 10N, 1:7,500

+/-

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0 0.2 0.4 km Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure Je Ke Le Jc

-70

-50

-60 Je Jc Ke Le Unnamed fault Unnamed fault C

B A

C' B'

A' Figure extent Channels J, K, and L-Oceano Fault Zone Piercing Points 7-41 OFFSHORE LESS STUDIES (a) Smoothed similarity time slice at 0.0695 s Je Ke Le Jc Oceano fault Unnamed fault Unnamed fault (c) Bedrock surface (g) 3D bedrock surface Notes:

1. See figure 7-23 for piercing point location.
2. See section 3.3 for description of channel nomenclature.
3. Contour interval is 2 m. Major contours are 10 m.
4. Depth values on grid assume a velocity of 1,600 m/s.

Je Ke Le Jc (b) Bedrock slope File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-41_OFChannelJKL.mxd; Date: 7/15/2014; User: R. Dame, Fugro; Rev.3 2011/2012 San Luis Obispo Bay 3D high-r esolution survey extent EXPLANATION Seafloor Unconformity H10 Top of bedrock Holocene sediment Channel fill Fault Channel thalweg Channel margins Onlap of Late Pleistocene deposits onto bedrock surface Upper Pleistocene deposits Map projection and scale: WGS 84 / UTM Zone 10N, 1:7,500

+/-

0 0.1 0.2 mi.

0 0.2 0.4 km Arbitrary line Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure Ic Gc Fc

-70

-70

-70

-80

-60

-70 Fc Gc Ic Unnamed fault Unnamed fault C

B A

C' B'

A' Ic Gc Fc Unnamed fault Unnamed fault Figure extent Channels F, G, and I-Unnamed Fault Piercing Points 7-42 OFFSHORE LESS STUDIES (a) Smoothed similarity time slice at 0.083 s (c) Bedrock surface (g) 3D bedrock surface Notes:

1. See Figure 7-23 for piercing point location.
2. See Section 3.3 for description of channel nomenclature.
3. Contour interval is 2 m. Major contours are 10 m.
4. Depth values on grid assume a velocity of 1,600 m/s.

Ic Fc (b) Bedrock slope Gc EXPLANATION Seafloor Unconformity H10 Top of bedrock Holocene sediment Channel fill Fault Channel thalweg Channel margins Arbitrary line File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-42_UFChannelFGI.mxd; Date: 7/15/2014; User: R. Dame, Fugro; Rev.3 2011/2012 San Luis Obispo Bay 3D high-resolution survey extent Map projection and scale: WGS 84 / UTM Zone 10N, 1:7,500

+/-

0 0.1 0.2 mi.

0 0.2 0.4 km Ch3.GEO.DCPP.TR.14.02 R0

(

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!P

!P

!P

!P

?

?

?

North Pecho fault Focal mechanism for ML 3.5 earthquake 0.10 0.09 0.08 0.07 0.06 0.05 0.12 0.13 0.14 0.11 0.15 Eastern block Western block Central block Pecho fault Los Berros fault

?

Shoreline fault Oceano fault Los Berros fault Unnamed fault Oceano fault Unnamed fault

-120°42'

-120°42'

-120°44'

-120°44'

-120°46' 35°8' 35°8' 35°6' 35°6' DCPP Figure extent EXPLANATION Fault, dashed where inferred Earthquake locations from Hardebeck (pers. comm., 2014)

Map projection and scale: WGS 84 / UTM Zone 10N, 1:40,000

+/-

0 0.5 1

mi.

0 1

2 km 10 August 2000 ML 3.5 Event, Bedrock Surface, San Luis Obispo Bay 7-43 OFFSHORE LESS STUDIES Figure Pacific Gas and Electric Company File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-43_M3-5_Event.mxd; Date: 5/19/2014; User: Ranon Dulberg, Fugro; Rev.3

!P 1.2 (12/5/2001)

!P 1.4 (12/2/2001)

!P 1.7 (8/13/2000)

!P 3.5 (8/10/2000)

Notes:

1. Refer to Figure 7-23 for paleochannel explanation.
2. Bedrock contour interval is 5 ms.

Ch3.GEO.DCPP.TR.14.02 R0

0

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-40

-60

-80 20 40

-100

-120

-140

-160 0

50 100 150 200 250 300 350 400 450 Global Sea Level Relative to Present (m)

Age (ka) 1 2

3 4

5a 5c 5e 6b 6c 6e 7a 7c 7e 8b 8c 8e 9a 9b 9e 10 11 12 Min.

Preferred Max.

Alternative Age Models MIS 14 (~550 ka)

EXPLANATION Sea-level curve Uncertainty Marine isotope stage, substage Paleoshoreline 5a

-84

-92 Note: See Figures 7-22 and 7-24 for illustrations of buried paleostrandlines.

Source: Modified from Waelbroeck et al. (2002).

Pacific Gas and Electric Company Figure OFFSHORE LESS STUDIES 7-44 Filepath: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\ai\\Figure_7-44_ShorelineAgeModel.ai; Date: 05/13/2014; User: Bryan Bergkamp, Fugro; Rev.3 Age Model for Buried Paleostrandlines San Luis Obispo Bay Ch3.GEO.DCPP.TR.14.02 R0

0

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-100

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Age (ka) 1 2

H10 H10 H30 H40 3

4 5a 5c 5e 6b 6c 6e 7a 7c 7e 8b 8c 8e 9a 9b 9e 10 11 12 Min.

Preferred Max.

Alternative Age Models EXPLANATION Sea-level curve All channels (reoccupation)

Uncertainty Select paleochannels Marine isotope stage, substage Unconformity (see Figure 1-6) 5a

-50 K,L C, D,E (initial bedrock incision)

A, B, F, I, J (reoccupation)

B,J (initial bedrock incision)

F (reoccupation)

A (lowest preferred)

(initial bedrock incision)

A (lowest preferred)

I (initial bedrock incision)

B, C, D, E, K, L (initial bedrock incision)

All channels (reoccupation)

A,F,I

~1.4 Ma Notes:

1. See Figures 7-32 through 7-43 for illustrations of paleochannels.
2. Channels G and H are not included in age model.

Pacific Gas and Electric Company Figure OFFSHORE LESS STUDIES 7-45 Filepath: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\ai\\Figure_7-45_PaleochannelAgeModel.ai; Date: 07/23/2014; User: Bryan Bergkamp, Fugro; Rev.3 Age Model for Paleochannels, San Luis Obispo Bay Ch3.GEO.DCPP.TR.14.02 R0

PBS-09 PBS-319 Point Sal DCPP Figure extent USGS Lines PBS-09 and PBS-319 with Possible Channel A 7-46 OFFSHORE LESS STUDIES Pacific Gas and Electric Company Figure Notes:

1. Depth values on seismic profile assume a velocity of 1,600 m/s.
2. Contour interval is 2 m. Heavy contours are 10 m.

Source: PG&E DEM compilation v2013.07.











z z

z z

z z

z z

z z

z

















Hosgri fault zone South Pecho fault Shoreline fault Oceano fault Iw Cw Fw Aw

-120

-90

-100

-110 PBS-319 PBS-09 120°36'0"W 120°36'0"W 120°40'0"W 120°40'0"W 120°44'0"W 120°44'0"W 120°48'0"W 120°48'0"W 35°7'0"N 35°7'0"N 35°6'0"N 35°6'0"N 35°5'0"N 35°5'0"N (a)

(b)

(c) 1:61,451 Map projection and scale: WGS 84 / UTM Zone 10N,

+/-

0 1

2 mi.

0 2

4 km File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_7-46_PBS-09-319.mxd; Date: 7/15/2014; User: R. Dame, Fugro; Rev.3 EXPLANATION Faults



Reverse fault concealed Concealed Approximate queried Approximate Certain Line location Onlap of Upper Pleistocene deposits onto bedrock surface 2011/2012 San Luis Obispo Bay 3D high-resolution survey Ch3.GEO.DCPP.TR.14.02 R0

1 10 100 1,000 10,000 100,000 1,000,000 1,000 10,000 100,000 1,000,000 10,000,000 CUMULATIVE OFFSET (M)

OFFSET AGE (Yrs)

Hosgri / San Simeon Fault Zone Slip Rates 1 cm/yr 1 mm/yr 1

3 8

7 4b 4a 6

4c 5

4d 0.1 mm/yr 3D LESS Bin Size 3.1 m Note:

Cumulative fault offsets are plotted with respect to the reported age of the offset. For each piercing point, the reported range of offsets and age date are shown as rectangles. Preferred values are shown as filled circles. Reference rates of 1 cm/y, 1, and 0.1 mm/y are shown as diagonal lines. Points 1, 2, and 3 refer to the slip rates reported in this study (Pt. Sal (1) channel F (1.8 to 1.9 mm/yr (range: 0.4 to 5.1 mm/yr)) and (2) channels A and B (1.8 mm/yr (range: 0.2 to 4.5 mm/yr)) and Estero Bay (3) Channel De-Ee1-DBw (1.4 mm/yr (range: 0.2 to 3.6 mm/yr))). Other slip rates or piercing points include points 4a-d (San Simeon, Hall et al.,

1994; Hansen et al., 1994); 5 (offshore Pt. Estero, Johnson et al (2013); 6 (southern Hosgri, Sorlien et al., 1999); 7, 8 (Pt.

Buchon/Pt. Sur and Pt. Sal/ San Simeon ophiolites (Langenheim et al., 2013)).

Estero Bay Channel D Point Sal Channel F 2

Point Sal Channels A and B Pacific Gas and Electric Company Figure OFFSHORE LESS STUDIES 8-1 File path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2013_09_30_PGESeismicDataInterpRev1\\ai\\Figure_7-9B_HFZ_Slip.ai; Date: 07/23/2014; User: Bryan Bergkamp, Fugro; Rev.0 Hosgri-San Simeon Fault Zone Slip Rates Ch3.GEO.DCPP.TR.14.02 R0

Note:

Cumulative fault offsets are plotted with respect to the reported age of the offset. For each piercing point, the reported range of offsets and age date are shown as rectangles. Preferred values are shown as filled circles. Reference rates of 1, 0.1 and 0.01 mm/y are shown as diagonal lines. Horizontal line depicts the 3D LESS bin size of 3.1 m, which represents the minimum spatial resolution dimension (or pixel size) for the 3D seismic reflection volume used in this study. The paleostrandlines have a preferred slip rate of 0.06 mm/yr (range: 0.01 to 0.5 mm/yr), Channel A has preferred slip rate of 0.1 (range: 0.01 to 0.4 mm/yr) and, and Channels B, C, F, I, and J have a preferred slip rate of 0 mm/yr (range: 0 to 0.3 mm/yr). See text for further discussion.

Shoreline Fault Zone Slip Rates Paleostrandlines Channel A Channels B, C, F, I, and J 1

10 100 1,000 10,000 1,000 10,000 100,000 1,000,000 10,000,000 CUMULATIVE OFFSET (m)

OFFSET AGE (Yrs) 1 mm/y 0.1 mm/y 0.01 mm/yr 3D LESS Bin Size 3.1 m Pacific Gas and Electric Company Figure OFFSHORE LESS STUDIES 8-2 File path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2013_09_30_PGESeismicDataInterpRev1\\ai\\Figure_7-9A_SF_OF_Slip.ai; Date: 07/23/2014; User: Bryan Bergkamp, Fugro; Rev.0 Shoreline Fault Zone Slip Rates Ch3.GEO.DCPP.TR.14.02 R0

Note:

Cumulative fault offsets are plotted with respect to the reported age of the offset. For each piercing point, the reported range of offsets and age date are shown as rectangles. Preferred values are shown as filled circles. Reference rates of 1, 0.1 and 0.01 mm/y are shown as diagonal lines. Channel A has a preferred slip rate of 0.01 mm/yr (range: 0.0007 to 0.04 mm/yr), Channels B and F have a preferred slip rate of 0.1 mm/yr (range: 0.0007 to 0.3 mm/yr), Channel C has a preferred slip rate of 0.05 mm/yr (range:

0.0007 to 0.15 mm/yr), and Channels D and E have a preferred slip rate of 0.1 mm/yr (range: 0.00007 to 0.2 mm/yr).

CUMULATIVE OFFSET (m) 1 10 100 1,000 10,000 1,000 10,000 100,000 1,000,000 10,000,000 OFFSET AGE (Yrs)

Oceano Fault Zone Slip Rates 1 mm/y 0.1 mm/y 0.01 mm/yr Channel A Channel A Channels B and F Channel C Channels D and E Pacific Gas and Electric Company Figure OFFSHORE LESS STUDIES 8-3 File path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2013_09_30_PGESeismicDataInterpRev1\\ai\\Figure_7-9A_SF_OF_Slip.ai; Date: 07/23/2014; User: Bryan Bergkamp, Fugro; Rev.0 Oceano Fault Zone Slip Rates Ch3.GEO.DCPP.TR.14.02 R0

Pacific Gas and Electric Company Figure

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^_

Santa Barbara Mw 5.1 1978 San Simeon Mw 6.5 2003 Parkfield Mw 6.0 2004 Point Sal Mw 5.1 1980 Hosgri fault zone San Juan fault Rinconada fault North Channel Slope fault La Panza fault South Cuyama fault East Huasna fault Los Osos fault Lions Head fault Santa Ynez (West) fault Lost Hills fault Oceanic - West Huasna fault Santa Ynez River fault Casmalia fault San Andreas fault Little Pine fault Morales fault Pitas Point fault Shoreline fault zone SMR fault Oceano fault Los Alamos fault Wilmar Avenue fault Morales fault east Big Pine fault west Great Valley fault South Branch Santa Ynez fault Los Berros fault Purisima Structure Lompoc Structure San Luis Obispo Bay fault Hosgri fault zone Point Arguello Point Sal Point Conception Western Transverse Ranges Estero Bay Point Buchon Rinconada fault Oceano-SMR fault DCPP

-119°39'

-119°39'

-119°59'

-119°59'

-120°19'

-120°19'

-120°39'

-120°39'

-120°59'

-120°59' 36°0' 36°0' 35°40' 35°40' 35°20' 35°20' 35°0' 35°0' 34°40' 34°40' 34°20' 34°20' Figure extent Generalized Fault Activity and Seismicity Map OFFSHORE LESS STUDIES 9-1 3D LESS extents EXPLANATION

> 5 mm/yr 1-5 mm/yr

< 1 mm/yr Slip Rate Categories Faults Strike-slip fault (dips 70o to 90o)

(

(

Reverse of thrust fault, teeth on hanging wall (dips 30o to 75o)

(

(

Reverse or thrust fault, mostly blind Oblique-slip fault, reverse component (dips 45o to 75o)

(

(

?

Fault poorly characterized Offshore Anticline File Path: N:\\Projects\\04_2013\\04_7922_4500_PGESeismicDataInterpretation\\Outputs\\2014_04_20_LESSStudiesRev3\\mxd\\Figure_9-1_FaultActivitySeismicity.mxd; Date: 7/17/2014; User: Robert Dame, Fugro; Rev.3 Earthquake Epicenter Mw 1.5 - 2.9 3.0 - 3.9 4.0 - 4.9 5.0 - 5.9 6.0 - 6.9

+/-

Map projection and scale: WGS 84 / UTM Zone 10N, 1:600,000 0

10 20 mi.

0 15 30 km Notes:

1) SMR = Santa Maria River.
2) Faults modified from UCERF3, Department of Water Resources (2002),

PG&E (2013), Dibblee (1966, 1986), and this study.

3) Earthquake epicenters from NEIC Rectangular Earthquake Search, 1973-2013. Extract February 2013.
4) Earthquake epicenters near DCPP from California Central Coast earthquake catalog between 1973-2012 relocated using tomoDD method.

(Hardebeck, personal communication, 2013)

Ch3.GEO.DCPP.TR.14.02 R0

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