Specification Attachments Part_5.pdf

20179123.009A/SAC21R121563 Page A-1 May 24, 2021 © 2021 Kleinfelder

APPENDIX A

CURRENT INVESTIGATION BORING LOGS

LIST OF ATTACHMENTS

Appendix A-1 C3 Study Area Boring Logs Appendix A-2 C4 Study Area Boring Logs

20179123.009A/SAC21R121563 Page A-2 May 24, 2021

Appendix A-1- C3 Study Area Boring Logs Figure A-1-1 Unified Soil Classification System (ASTM D2487) Figure A-1-2 Soil Description Key Figure A-1-3 Log Key Figure A-1-4 Log of Boring 2F-20-011 Figure A-1-5 Log of Boring 2F-20-012 Figure A-1-6 Log of Boring 2F-20-013 Figure A-1-7 Log of Boring 2F-20-014 Figure A-1-8 Log of Boring 2F-20-015 Figure A-1-9 Log of Boring 2F-20-016 Figure A-1-10 Log of Boring 2F-20-017 Figure A-1-11 Log of Boring 2F-20-018

A-1-1

A-1-2

A-1-3

A-1-4

A-1-5

A-1-6

A-1-7

A-1-8

A-1-9

A-1-10

A-1-11

20179123.009A/SAC21R121563 Page A-3 May 24, 2021

Appendix A-2 - C4 Study Area Boring Logs Figure A-2-1 Unified Soil Classification System (ASTM D2487) Figure A-2-2 Soil Description Key Figure A-2-3 Log Key Figure A-2-4 Log of Boring 2F-20-001 Figure A-2-5 Log of Boring 2F-20-002 Figure A-2-6 Log of Boring 2F-20-003 Figure A-2-7 Log of Boring 2F-20-004 Figure A-2-8 Log of Boring 2F-20-005 Figure A-2-9 Log of Boring 2F-20-006 Figure A-2-10 Log of Boring 2F-20-007 Figure A-2-11 Log of Boring 2F-20-008 Figure A-2-12 Log of Boring 2F-20-009 Figure A-2-13 Log of Boring 2F-20-010 Figure A-2-14 Log of Boring 2F-20-019 Figure A-2-15 Log of Boring 2F-20-020 Figure A-2-16 Log of Boring 2F-20-021 Figure A-2-17 Log of Boring 2F-20-022 Figure A-2-18 Log of Boring 2F-20-023 Figure A-2-19 Log of Boring 2F-20-024 Figure A-2-20 Log of Boring 2F-20-025 Figure A-2-21 Log of Boring 2F-20-026 Figure A-2-22 Log of Boring 2F-20-027 Figure A-2-23 Log of Boring 2F-20-028 Figure A-2-24 Log of Boring 2F-20-029

A-2-1

A-2-2

A-2-3

A-2-4

Hammer Efficiency: 90% and 85%

A-2-5

A-2-6

A-2-7

A-2-8

A-2-9

A-2-10

A-2-11

A-2-12

A-2-13

A-2-14

A-2-15

A-2-16

A-2-16

A-2-17

A-2-18

A-2-18

A-2-19

A-2-20

A-2-21

A-2-21

A-2-22

A-2-23

A-2-24

A-2-24

20179123.009A/SAC21R121563 Page B-1 May 24, 2021

APPENDIX B

CURRENT INVESITIGATION HAMMER ENERGY MEASUREMENT REPORTS

LIST OF ATTACHMENTS

B-1 Standard Penetration Energy Measurements, Automatic Hammer on Hollow-stem Auger Drill Rig, D-76 prepared by Gregg Drilling dated November 5, 2020.

B-2 Standard Penetration Energy Measurements, Automatic Hammer on Hollow-stem Auger Drill Rig, D-83 prepared by Gregg Drilling dated December 3, 2020.

GREGG DRILLING, LLC

ENVIRONMENTAL AND GEOTECHNICAL INVESTIGATION SERVICES

2726 Walnut Ave Signal Hill, California 90755 (562) 427-6899 FAX (562) 427-3314

OTHER OFFICES: SAN FRANCISCO

www.greggdrilling.com

November 5, 2020

Kleinfelder Attn: Kimberly Brown

Re: Standard Penetration Energy Measurements Automatic Hammer on Hollow-stem Auger Drill Rig, D-76 Jibboom Bridge & 1st St. Project Area, Sacramento, CA

Dear Ms. Brown, This report offers results of energy measurements and related calculations made on November 3, 2020 during Standard Penetration Testing (SPT) on Gregg Drilling’s hollow stem auger drill rig. Dynamic tests were performed on an instrumented section of NWJ drill rod attached to the sampler rod string. All dynamic measurements were obtained and recorded using a SPT Analyzer®.

Average Energy: 90% Sample Depths tested (in feet): 5, 7.5, 10, 12.5, 15, 17.5, 20, 25, 27.5, 30

*Note: If the SPT Analyzer did not measure all blows for a sample depth, the reported blow count and therefore calculated N60 value in the following tables will be incorrect. Often blows are excluded from calculations if the sensors are loose or have drifted from the baseline. Field records of actual blow count values should be used in place of the blow counts shown in the following tables.

Equipment:

SPT energy measurements were made on SPT and Modified California samplers driven by the hammer/anvil system on the Gregg Drilling drill rig on November 3, 2020. The rig was tested on Jibboom Bridge& 1st St. Project area. In total, 10 energy measurements were collected corresponding to 10 different samples at increasing depth.

Gregg used a SPT Analyzer (SPTA) to acquire and process measurements of force and velocity with every impact of the automatic hammer on the sample rods. Gregg follows the procedure outlined in ASTM D4633. Two strain gauges mounted on a 2-foot section of NWJ rod measured force, while two piezoresistive accelerometers bolted on the same rod measured acceleration. The gauges were mounted approximately 6” from the top of the rod.

Analog signals from the gauges and accelerometers were collected, digitized, displayed in real-time, and stored by the SPTA. Selected output from the SPTA for each recorded impact of the hammer included:

Maximum force in the rod (FMX) Maximum velocity in the rod (VMX) Maximum calculated transferred energy (EFV) Blows per minute (BPM) Energy transferred to the rods (ETR)

Data and Calculations:

The purpose of testing was to measure the energy transferred from the hammer to the drill rod and to calculate the energy efficiency of the hammer. The SPTA measurements of force and velocity were reviewed after field testing and analyzed to calculate the transferred energy (EFV).

The maximum energy transferred past the gauge location, EFV, is computed by the SPTA using force (F) and velocity (V) records as follows:

b

EMX = a F(t) V(t) dt

The time “a” corresponds to the start of the record when the energy transfer begins and “b” is the time at which energy transferred to the rod reaches a maximum value. The energy transferred is defined as ETR, and is usually used to define the efficiency of the hammer/anvil system.

Results:

Tables for each sample depth summarize the average calculated energies for each sample tested as well as the details for each sample. It is shown that the overall average (ETR) energy for this system is 90%. The Summary of SPT Test Results table at the end provides a summary of all the samples tested at each sampling depth. The plots and tables present selected measured and calculated results as a function of blow number. The results include:

the blow number BC (blow count in feet) *NOTE: This is calculated by dividing the number of blows for each 6” of penetration by the 6” depth interval and is therefore only approximate. If some blows were deleted due to erroneous or poor data, the penetration depths are not correct.

FMX (maximum rod force) VMX (maximum rod velocity) BPM (blows per minute) EFV (energy using the Force Velocity method in ft-lbs) ETR (energy transferred as a percentage of maximum)

At the end of each table is a statistical evaluation of the results for each variable including the average, standard deviation, maximum, minimum and what blow number these maximums and minimums occurred.

If you have any questions or comments on this report, please do not hesitate to call or e-mail me:

kcabal@greggdrilling.com.

Sincerely, Kelly Cabal

Data Management & Communications Gregg Drilling, LLC

Appendix A

Pile Dynamics, Inc. Page 1 of 13 SPT Analyzer Results PDA-S Ver. 2018.30 - Printed: 11/5/2020

D-76 5 Wessam Zanaty Test date: 11/3/2020 2f-20-002 AR: 1.42 in^2 SP: 0.492 k/ft3 LE: 10.08 ft EM: 30000 ksi WS: 16807.9 ft/s

Depth: (5.00 - 6.50 ft], displaying BN: 6 F@10.08 ft (60 kips) V@10.08 ft (23.7 ft/s)

A2,4 F1,3

F1 : [150NWJ1] 210.83 PDICAL (1) FF1 A2 (PR): [K3719] 368 mv/6.4v/5000g (1) VF1 F3 : [150NWJ2] 212.78 PDICAL (1) FF1 A4 (PR): [K5674] 345 mv/6.4v/5000g (1) VF1

FMX: Maximum Force EFV: Maximum Energy VMX: Maximum Velocity ETR: Energy Transfer Ratio - Rated BPM: Blows/Minute

BL# BC FMX VMX BPM EFV ETR

/6" kips ft/s bpm ft-lb %

1 2 42 19.4 1.9 279 79.7 2 2 42 18.7 18.0 286 81.8 3 3 40 17.0 57.1 265 75.8 4 3 39 16.1 57.6 240 68.6 6 3 43 17.9 27.5 299 85.4 7 3 43 18.6 58.5 287 82.1 8 3 42 17.7 57.1 288 82.2

Average 41 17.5 51.5 276 78.8 Std Dev 2 0.8 12.0 21 6.0

Maximum 43 18.6 58.5 299 85.4 Minimum 39 16.1 27.5 240 68.6

N-value: 5

Sample Interval Time: 11.47 seconds.

Pile Dynamics, Inc. Page 2 of 13

D-76 5 Wessam Zanaty Test date: 11/3/2020 2f-20-002 AR: 1.42 in^2 SP: 0.492 k/ft3 LE: 14.50 ft EM: 30000 ksi WS: 16807.9 ft/s

Depth: (7.50 - 9.00 ft], displaying BN: 19 F@14.50 ft (60 kips) V@14.50 ft (23.7 ft/s)

A2,4 F1,3

F1 : [150NWJ1] 210.83 PDICAL (1) FF1 A2 (PR): [K3719] 368 mv/6.4v/5000g (1) VF1 F3 : [150NWJ2] 212.78 PDICAL (1) FF1 A4 (PR): [K5674] 345 mv/6.4v/5000g (1) VF1

BL# BC FMX VMX BPM EFV ETR

/6" kips ft/s bpm ft-lb %

9 3 42 15.9 1.9 299 85.3 10 3 43 16.0 22.6 321 91.8 11 3 43 16.3 58.4 313 89.5 12 4 43 16.3 58.4 314 89.8 13 4 42 16.5 58.3 314 89.8 14 4 43 17.1 57.9 318 90.9 15 4 43 16.5 58.4 321 91.8 16 6 43 16.4 57.7 322 92.0 17 6 44 16.4 58.0 322 91.9 18 6 43 16.2 58.0 318 90.9 19 6 46 16.9 58.1 334 95.4 20 6 44 15.2 58.0 320 91.5 21 6 44 15.1 58.3 322 92.0

Average 43 16.3 58.1 321 91.6 Std Dev 1 0.6 0.2 5 1.5

Maximum 46 17.1 58.4 334 95.4 Minimum 42 15.1 57.7 314 89.8

N-value: 10

Sample Interval Time: 14.01 seconds.

Pile Dynamics, Inc. Page 3 of 13

D-76 5 Wessam Zanaty Test date: 11/3/2020 2f-20-002 AR: 1.42 in^2 SP: 0.492 k/ft3 LE: 15.08 ft EM: 30000 ksi WS: 16807.9 ft/s

Depth: (10.00 - 11.50 ft], displaying BN: 41 F@15.08 ft (60 kips) V@15.08 ft (23.7 ft/s)

A2,4 F1,3

F1 : [150NWJ1] 210.83 PDICAL (1) FF1 A2 (PR): [K3719] 368 mv/6.4v/5000g (1) VF1 F3 : [150NWJ2] 212.78 PDICAL (1) FF1 A4 (PR): [K5674] 345 mv/6.4v/5000g (1) VF1

BL# BC FMX VMX BPM EFV ETR

/6" kips ft/s bpm ft-lb %

22 3 40 19.0 1.9 313 89.4 23 3 41 18.9 23.2 322 92.0 24 3 41 18.3 57.2 315 90.0 25 8 42 17.5 57.7 316 90.2 26 8 43 17.8 58.2 318 90.9 27 8 43 16.8 58.1 321 91.7 28 8 42 15.2 58.4 315 89.9 29 8 42 15.2 58.2 316 90.2 30 8 42 14.9 58.2 313 89.5 31 8 42 15.6 57.9 322 92.1 32 8 42 16.0 58.1 318 90.8 33 11 41 16.0 58.3 312 89.2 34 11 41 16.4 58.2 309 88.2 35 11 42 16.8 58.0 319 91.1 36 11 41 15.9 57.9 305 87.2 37 11 42 17.0 58.6 306 87.4 38 11 42 16.1 58.3 315 90.1 39 11 43 16.5 58.2 320 91.5 40 11 43 15.4 58.2 319 91.1 41 11 43 16.3 58.3 322 92.1 42 11 43 16.7 58.2 322 92.1 43 11 45 16.1 31.0 337 96.3

Average 42 16.2 56.7 317 90.6 Std Dev 1 0.7 6.1 7 2.0

Maximum 45 17.8 58.6 337 96.3 Minimum 41 14.9 31.0 305 87.2

N-value: 19

Sample Interval Time: 24.12 seconds.

Pile Dynamics, Inc. Page 4 of 13

D-76 5 Wessam Zanaty Test date: 11/3/2020 2f-20-002 AR: 1.42 in^2 SP: 0.492 k/ft3 LE: 19.50 ft EM: 30000 ksi WS: 16807.9 ft/s

Depth: (12.50 - 14.00 ft], displaying BN: 79 F@19.50 ft (60 kips) V@19.50 ft (23.7 ft/s)

A2,4 F1,3

F1 : [150NWJ1] 210.83 PDICAL (1) FF1 A2 (PR): [K3719] 368 mv/6.4v/5000g (1) VF1 F3 : [150NWJ2] 212.78 PDICAL (1) FF1 A4 (PR): [K5674] 345 mv/6.4v/5000g (1) VF1

BL# BC FMX VMX BPM EFV ETR

/6" kips ft/s bpm ft-lb %

44 15 40 17.3 1.9 331 94.5 45 15 40 17.3 28.8 333 95.1 46 15 41 17.8 59.2 338 96.5 47 15 40 17.1 59.4 331 94.5 48 15 39 16.7 59.5 333 95.2 49 15 40 17.0 59.6 332 94.8 50 15 37 16.5 59.3 335 95.6 51 15 37 16.3 59.3 333 95.1 52 15 36 15.8 59.2 322 92.1 53 15 38 16.2 59.2 327 93.3 54 15 39 16.6 59.2 332 94.8 55 15 35 16.8 59.0 319 91.1 56 15 37 15.9 59.1 329 94.1 57 16 37 16.6 59.2 327 93.3 58 16 40 16.2 59.0 323 92.3 59 16 39 16.5 59.2 333 95.2 60 16 40 15.7 59.1 325 92.9 61 16 36 16.2 59.1 328 93.8 62 16 37 15.9 59.1 327 93.3 63 16 35 17.1 59.2 324 92.6 64 16 38 16.1 59.2 326 93.3 65 16 37 16.4 59.1 333 95.0 66 16 35 15.7 59.2 326 93.1 67 16 34 17.4 59.0 321 91.8 68 16 39 16.4 59.1 329 93.9 69 16 40 15.8 59.1 329 94.0 70 16 40 16.0 59.0 333 95.2 71 16 36 15.8 59.0 331 94.6 72 16 39 15.4 58.9 330 94.3 73 9 42 15.6 58.9 342 97.6 74 9 41 15.4 59.0 335 95.6

Pile Dynamics, Inc. Page 5 of 13

75 9 40 16.0 58.9 326 93.1 76 9 39 15.6 58.9 332 94.9 77 9 40 15.6 58.9 333 95.0 78 9 39 15.8 58.8 332 94.8 79 9 39 15.8 58.4 324 92.6 80 9 40 15.4 58.6 331 94.5 81 9 41 15.6 58.6 330 94.2

Average 39 16.0 59.0 329 94.0 Std Dev 2 0.5 0.2 4 1.2

Maximum 42 17.4 59.2 342 97.6 Minimum 34 15.4 58.4 321 91.8

N-value: 25

Sample Interval Time: 38.66 seconds.

Pile Dynamics, Inc. Page 6 of 13

D-76 5 Wessam Zanaty Test date: 11/3/2020 2f-20-002 AR: 1.42 in^2 SP: 0.492 k/ft3 LE: 20.08 ft EM: 30000 ksi WS: 16807.9 ft/s

Depth: (15.00 - 16.50 ft], displaying BN: 92 F@20.08 ft (60 kips) V@20.08 ft (23.7 ft/s)

A2,4 F1,3

F1 : [150NWJ1] 210.83 PDICAL (1) FF1 A2 (PR): [K3719] 368 mv/6.4v/5000g (1) VF1 F3 : [150NWJ2] 212.78 PDICAL (1) FF1 A4 (PR): [K5674] 345 mv/6.4v/5000g (1) VF1

BL# BC FMX VMX BPM EFV ETR

/6" kips ft/s bpm ft-lb %

84 3 41 17.4 47.5 330 94.4 85 3 40 17.0 52.1 330 94.4 86 3 39 17.4 51.2 328 93.7 87 4 41 17.4 51.3 334 95.5 88 4 39 17.0 51.5 324 92.5 89 4 38 18.2 51.4 327 93.4 90 4 40 18.1 51.3 331 94.4 91 4 40 18.0 51.5 328 93.9 92 4 38 18.4 51.5 329 94.0 93 4 39 18.0 51.0 323 92.2 94 4 40 18.3 51.0 327 93.5

Average 39 17.9 51.3 328 93.7 Std Dev 1 0.5 0.2 3 1.0

Maximum 41 18.4 51.5 334 95.5 Minimum 38 17.0 51.0 323 92.2

N-value: 8

Sample Interval Time: 11.68 seconds.

Pile Dynamics, Inc. Page 7 of 13

D-76 5 Wessam Zanaty Test date: 11/3/2020 2f-20-002 AR: 1.42 in^2 SP: 0.492 k/ft3 LE: 24.50 ft EM: 30000 ksi WS: 16807.9 ft/s

Depth: (17.50 - 19.00 ft], displaying BN: 101 F@24.50 ft (60 kips) V@24.50 ft (23.7 ft/s)

A2,4 F1,3

F1 : [150NWJ1] 210.83 PDICAL (1) FF1 A2 (PR): [K3719] 368 mv/6.4v/5000g (1) VF1 F3 : [150NWJ2] 212.78 PDICAL (1) FF1 A4 (PR): [K5674] 345 mv/6.4v/5000g (1) VF1

BL# BC FMX VMX BPM EFV ETR

/6" kips ft/s bpm ft-lb %

97 2 38 17.8 37.3 337 96.2 98 3 37 17.0 50.9 327 93.3 99 3 41 17.6 50.0 328 93.7

100 3 40 17.3 49.2 325 92.9 101 3 37 17.4 49.4 326 93.1 102 3 37 17.1 49.6 324 92.6 103 3 39 17.1 49.4 318 90.7

Average 39 17.2 49.8 325 92.7 Std Dev 2 0.2 0.6 3 0.9

Maximum 41 17.6 50.9 328 93.7 Minimum 37 17.0 49.2 318 90.7

N-value: 6

Sample Interval Time: 7.22 seconds.

Pile Dynamics, Inc. Page 8 of 13

D-76 5 Wessam Zanaty Test date: 11/3/2020 2f-20-002 AR: 1.42 in^2 SP: 0.492 k/ft3 LE: 25.08 ft EM: 30000 ksi WS: 16807.9 ft/s

Depth: (20.00 - 21.50 ft], displaying BN: 108 F@25.08 ft (60 kips) V@25.08 ft (23.7 ft/s)

A2,4 F1,3

F1 : [150NWJ1] 210.83 PDICAL (1) FF1 A2 (PR): [K3719] 368 mv/6.4v/5000g (1) VF1 F3 : [150NWJ2] 212.78 PDICAL (1) FF1 A4 (PR): [K5674] 345 mv/6.4v/5000g (1) VF1

BL# BC FMX VMX BPM EFV ETR

/6" kips ft/s bpm ft-lb %

104 2 35 16.0 1.9 307 87.7 105 2 36 16.4 18.2 308 87.9 106 2 35 16.2 35.2 306 87.6 107 2 35 16.3 35.4 313 89.3 108 3 35 15.7 36.5 303 86.6 109 3 35 16.1 36.5 306 87.5 110 3 38 16.4 36.5 307 87.8

Average 35 16.1 36.0 307 87.7 Std Dev 1 0.3 0.6 3 0.9

Maximum 38 16.4 36.5 313 89.3 Minimum 35 15.7 35.2 303 86.6

N-value: 5

Sample Interval Time: 11.64 seconds.

Pile Dynamics, Inc. Page 9 of 13

D-76 5 Wessam Zanaty Test date: 11/3/2020 2f-20-002 AR: 1.42 in^2 SP: 0.492 k/ft3 LE: 29.50 ft EM: 30000 ksi WS: 16807.9 ft/s

Depth: (25.00 - 26.50 ft], displaying BN: 124 F@29.50 ft (60 kips) V@29.50 ft (23.7 ft/s)

A2,4 F1,3

F1 : [150NWJ1] 210.83 PDICAL (1) FF1 A2 (PR): [K3719] 368 mv/6.4v/5000g (1) VF1 F3 : [150NWJ2] 212.78 PDICAL (1) FF1 A4 (PR): [K5674] 345 mv/6.4v/5000g (1) VF1

BL# BC FMX VMX BPM EFV ETR

/6" kips ft/s bpm ft-lb %

111 5 38 16.3 1.9 327 93.5 112 5 38 16.1 22.4 315 90.1 113 5 37 15.7 41.1 296 84.4 114 5 39 16.6 37.5 314 89.7 115 5 39 16.3 39.1 313 89.5 116 5 38 15.5 39.1 308 87.9 117 5 39 16.1 39.2 309 88.2 118 5 38 15.5 39.2 304 86.8 119 5 43 17.0 39.2 312 89.1 120 5 40 16.7 39.4 316 90.4 121 6 38 15.4 39.4 303 86.7 122 6 38 15.8 39.5 310 88.5 123 6 37 15.8 40.5 314 89.8 124 6 36 15.9 42.6 314 89.8 125 6 37 16.0 44.7 313 89.3 126 6 40 16.6 47.6 322 91.9

Average 38 16.0 41.0 311 89.0 Std Dev 2 0.5 2.7 5 1.5

Maximum 43 17.0 47.6 322 91.9 Minimum 36 15.4 39.1 303 86.7

N-value: 11

Sample Interval Time: 23.43 seconds.

Pile Dynamics, Inc. Page 10 of 13

D-76 5 Wessam Zanaty Test date: 11/3/2020 2f-20-002 AR: 1.42 in^2 SP: 0.492 k/ft3 LE: 35.08 ft EM: 30000 ksi WS: 16807.9 ft/s

Depth: (27.50 - 29.00 ft], displaying BN: 135 F@35.08 ft (60 kips) V@35.08 ft (23.7 ft/s)

A2,4 F1,3

F1 : [150NWJ1] 210.83 PDICAL (1) FF1 A2 (PR): [K3719] 368 mv/6.4v/5000g (1) VF1 F3 : [150NWJ2] 212.78 PDICAL (1) FF1 A4 (PR): [K5674] 345 mv/6.4v/5000g (1) VF1

BL# BC FMX VMX BPM EFV ETR

/6" kips ft/s bpm ft-lb %

127 2 36 16.0 1.9 301 86.1 128 2 38 16.8 22.4 327 93.4 129 4 37 16.1 38.5 304 86.9 130 4 35 16.3 39.9 303 86.5 131 4 38 16.4 41.9 302 86.4 132 4 40 16.9 41.8 308 88.1 133 5 40 17.3 36.5 312 89.3 134 5 37 16.2 38.3 307 87.7 135 5 39 16.5 39.7 306 87.4 136 5 37 16.7 40.0 315 90.1 137 5 37 15.9 40.8 308 88.0

Average 38 16.5 39.7 307 87.8 Std Dev 2 0.4 1.6 4 1.2

Maximum 40 17.3 41.9 315 90.1 Minimum 35 15.9 36.5 302 86.4

N-value: 9

Sample Interval Time: 16.32 seconds.

Pile Dynamics, Inc. Page 11 of 13

D-76 5 Wessam Zanaty Test date: 11/3/2020 2f-20-002 AR: 1.42 in^2 SP: 0.492 k/ft3 LE: 34.50 ft EM: 30000 ksi WS: 16807.9 ft/s

Depth: (30.00 - 31.50 ft], displaying BN: 151 F@34.50 ft (60 kips) V@34.50 ft (23.7 ft/s)

A2,4 F1,3

F1 : [150NWJ1] 210.83 PDICAL (1) FF1 A2 (PR): [K3719] 368 mv/6.4v/5000g (1) VF1 F3 : [150NWJ2] 212.78 PDICAL (1) FF1 A4 (PR): [K5674] 345 mv/6.4v/5000g (1) VF1

BL# BC FMX VMX BPM EFV ETR

/6" kips ft/s bpm ft-lb %

138 3 37 15.7 1.9 302 86.4 139 3 36 15.7 21.2 301 86.0 140 3 38 15.9 35.5 300 85.7 141 5 38 16.6 35.5 303 86.7 142 5 37 16.4 35.5 300 85.7 143 5 38 16.6 35.7 310 88.5 144 5 38 16.5 35.8 303 86.7 145 5 38 16.5 35.8 306 87.3 146 8 37 16.3 35.9 300 85.8 147 8 38 16.6 35.9 306 87.3 148 8 38 16.6 36.0 303 86.7 149 8 38 16.6 36.0 304 86.9 150 8 39 16.4 36.4 307 87.6 151 8 37 16.5 38.1 308 87.9 152 8 38 16.5 37.6 304 86.9 153 8 37 16.3 36.2 307 87.7

Average 38 16.5 36.2 305 87.1 Std Dev 1 0.1 0.7 3 0.8

Maximum 39 16.6 38.1 310 88.5 Minimum 37 16.3 35.5 300 85.7

N-value: 13

Sample Interval Time: 26.08 seconds.

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.5

.6

December 8, 2020

Haley & Aldrich Attn: Exequiel Sinco

Re: Standard Penetration Energy Measurements Automatic Hammer on Hollow-stem Auger Drill Rig, D-83 El Dorado St. Crossing Project Area, Fresno, CA

Dear Mr. Sinco, This report offers results of energy measurements and related calculations made on December 4, 2020 during Standard Penetration Testing (SPT) on Gregg Drilling’s hollow stem auger drill rig. Dynamic tests were performed on an instrumented section of NWJ drill rod attached to the sampler rod string. All dynamic measurements were obtained and recorded using a SPT Analyzer®.

Average Energy: 85% Sample Depths tested (in feet): 5, 10, 15, 20, 25, 30, 35, 40

*Note: If the SPT Analyzer did not measure all blows for a sample depth, the reported blow count and therefore calculated N60 value in the following tables will be incorrect. Often blows are excluded from calculations if the sensors are loose or have drifted from the baseline. Field records of actual blow count values should be used in place of the blow counts shown in the following tables.

Equipment:

SPT energy measurements were made on SPT and Modified California samplers driven by the hammer/anvil system on the Gregg Drilling drill rig on December 3, 2020. The rig was tested El Dorado St. Corssing Project area. In total, 8 energy measurements were collected corresponding to 8 different samples at increasing depth.

Gregg used a SPT Analyzer (SPTA) to acquire and process measurements of force and velocity with every impact of the automatic hammer on the sample rods. Gregg follows the procedure outlined in ASTM D4633. Two strain gauges mounted on a 2-foot section of NWJ rod measured force, while two piezoresistive accelerometers bolted on the same rod measured acceleration. The gauges were mounted approximately 6” from the top of the rod.

Analog signals from the gauges and accelerometers were collected, digitized, displayed in real-time, and stored by the SPTA. Selected output from the SPTA for each recorded impact of the hammer included:

Maximum force in the rod (FMX) Maximum velocity in the rod (VMX) Maximum calculated transferred energy (EFV) Blows per minute (BPM) Energy transferred to the rods (ETR)

Data and Calculations:

The purpose of testing was to measure the energy transferred from the hammer to the drill rod and to calculate the energy efficiency of the hammer. The SPTA measurements of force and velocity were reviewed after field testing and analyzed to calculate the transferred energy (EFV).

The maximum energy transferred past the gauge location, EFV, is computed by the SPTA using force (F) and velocity (V) records as follows:

EMX = a F(t) V(t) dt

The time “a” corresponds to the start of the record when the energy transfer begins and “b” is the time at which energy transferred to the rod reaches a maximum value. The energy transferred is defined as ETR, and is usually used to define the efficiency of the hammer/anvil system.

Results:

Tables for each sample depth summarize the average calculated energies for each sample tested as well as the details for each sample. It is shown that the overall average (ETR) energy for this system is 85%. The Summary of SPT Test Results table at the end provides a summary of all the samples tested at each sampling depth. The plots and tables present selected measured and calculated results as a function of blow number. The results include:

the blow number BC (blow count in feet) *NOTE: This is calculated by dividing the number of blows for each 6” of penetration by the 6” depth interval and is therefore only approximate. If some blows were deleted due to erroneous or poor data, the penetration depths are not correct.

FMX (maximum rod force) VMX (maximum rod velocity) BPM (blows per minute) EFV (energy using the Force Velocity method in ft-lbs) ETR (energy transferred as a percentage of maximum)

At the end of each table is a statistical evaluation of the results for each variable including the average, standard deviation, maximum, minimum and what blow number these maximums and minimums occurred.

If you have any questions or comments on this report, please do not hesitate to call or e-mail me:

kcabal@greggdrilling.com.

Data Management & Communications Gregg Drilling, LLC

Appendix A

Pile Dynamics, Inc. Page 1 of 17 SPT Analyzer Results PDA-S Ver. 2018.30 - Printed: 12/8/2020

D-83 5 Wessam Zanaty Test date: 12/4/2020

A20-OO4

AR: 1.42 in^2 SP: 0.492 k/ft3 LE: 10.29 ft EM: 30000 ksi WS: 16807.9 ft/s

Depth: (5.00 - 6.50 ft], displaying BN: 26 F@10.29 ft (60 kips) V@10.29 ft (23.7 ft/s)

A2,4 F1,3

F1 : [150NWJ1] 210.83 PDICAL (1) FF1 A2 (PR): [K3719] 368 mv/6.4v/5000g (1) VF1 F3 : [150NWJ2] 212.78 PDICAL (1) FF1 A4 (PR): [K5674] 345 mv/6.4v/5000g (1) VF1

FMX: Maximum Force EFV: Maximum Energy VMX: Maximum Velocity ETR: Energy Transfer Ratio - Rated BPM: Blows/Minute

BL# BC FMX VMX BPM EFV ETR

/6" kips ft/s bpm ft-lb %

2 8 42 13.4 20.7 281 80.2 3 8 42 13.8 50.6 275 78.4 4 8 41 14.4 51.2 283 80.9 5 8 41 14.4 51.5 281 80.3 6 8 41 14.3 51.6 274 78.4 7 8 39 14.5 51.4 284 81.2 8 8 40 14.4 51.7 278 79.5 9 10 39 14.7 51.4 291 83.1

10 10 39 14.2 51.6 276 78.8 11 10 40 14.5 51.7 283 81.0 12 10 39 14.6 51.4 290 82.8 13 10 39 14.4 51.5 294 83.9 14 10 38 14.5 51.6 286 81.6 15 10 38 15.0 51.7 293 83.6 16 10 38 14.3 51.5 285 81.5 17 10 39 14.8 51.6 301 85.9 18 10 39 14.3 51.5 295 84.3 19 10 37 14.6 51.7 282 80.5 20 10 39 14.5 51.5 292 83.6 21 10 37 14.5 51.5 287 81.9 22 10 38 14.5 51.4 287 81.9 23 10 38 14.8 51.5 288 82.3 24 10 38 14.8 51.6 292 83.5 25 10 39 14.6 51.5 287 82.0 26 10 37 14.7 51.6 295 84.4 27 10 37 14.7 51.9 298 85.3 28 10 36 14.7 51.5 274 78.4

Pile Dynamics, Inc. Page 2 of 17

Average 38 14.6 51.6 289 82.5 Std Dev 1 0.2 0.1 7 1.9

Maximum 40 15.0 51.9 301 85.9 Minimum 36 14.2 51.4 274 78.4

N-value: 20

Sample Interval Time: 30.26 seconds.

Pile Dynamics, Inc. Page 3 of 17

D-83 5 Wessam Zanaty Test date: 12/3/2020

A20-OO4

AR: 1.42 in^2 SP: 0.492 k/ft3 LE: 15.29 ft EM: 30000 ksi WS: 16807.9 ft/s

Depth: (10.00 - 11.50 ft], displaying BN: 51 F@15.29 ft (60 kips) V@15.29 ft (23.7 ft/s)

A2,4 F1,3

F1 : [150NWJ1] 210.83 PDICAL (1) FF1 A2 (PR): [K3719] 368 mv/6.4v/5000g (1) VF1 F3 : [150NWJ2] 212.78 PDICAL (1) FF1 A4 (PR): [K5674] 345 mv/6.4v/5000g (1) VF1

BL# BC FMX VMX BPM EFV ETR

/6" kips ft/s bpm ft-lb %

29 4 36 14.6 1.9 268 76.7 30 4 38 15.3 15.2 283 80.9 31 4 38 15.4 50.5 284 81.2 32 4 38 14.8 50.7 267 76.3 33 8 37 14.4 50.6 266 76.0 34 8 38 14.9 43.2 281 80.3 35 8 37 14.7 51.2 276 79.0 36 8 39 14.8 50.9 272 77.8 37 8 37 14.6 51.3 276 78.9 38 8 39 14.4 51.0 270 77.1 39 8 39 14.7 51.0 275 78.6 40 8 38 14.3 51.1 277 79.1 41 13 39 14.6 51.1 269 76.9 42 13 39 14.2 51.0 265 75.7 43 13 37 14.0 51.0 270 77.2 44 13 38 14.5 51.3 275 78.5 45 13 36 14.1 51.1 270 77.1 46 13 38 13.9 50.8 271 77.4 47 13 38 14.6 51.2 280 80.0 48 13 39 14.6 51.0 291 83.1 49 13 37 14.4 50.9 279 79.7 50 13 38 15.0 51.0 287 82.1 51 13 37 14.7 51.0 284 81.1 52 13 38 15.0 50.8 294 84.1 53 13 37 14.8 51.1 276 78.7

Average 38 14.5 50.6 276 79.0 Std Dev 1 0.3 1.7 8 2.2

Maximum 39 15.0 51.3 294 84.1 Minimum 36 13.9 43.2 265 75.7

N-value: 21

Pile Dynamics, Inc. Page 4 of 17

Sample Interval Time: 31.22 seconds.

Pile Dynamics, Inc. Page 5 of 17

D-83 5 Wessam Zanaty Test date: 12/4/2020

A20-OO4

AR: 1.42 in^2 SP: 0.492 k/ft3 LE: 20.29 ft EM: 30000 ksi WS: 16807.9 ft/s

Depth: (15.00 - 16.50 ft], displaying BN: 96 F@20.29 ft (60 kips) V@20.29 ft (23.7 ft/s)

A2,4 F1,3

F1 : [150NWJ1] 210.83 PDICAL (1) FF1 A2 (PR): [K3719] 368 mv/6.4v/5000g (1) VF1 F3 : [150NWJ2] 212.78 PDICAL (1) FF1 A4 (PR): [K5674] 345 mv/6.4v/5000g (1) VF1

BL# BC FMX VMX BPM EFV ETR

/6" kips ft/s bpm ft-lb %

55 12 42 15.0 18.0 298 85.2 56 12 45 14.1 50.6 296 84.6 57 12 45 13.7 51.0 287 82.0 58 12 44 13.1 51.0 283 80.9 59 12 43 13.8 51.1 305 87.3 60 12 43 13.3 51.1 304 86.8 61 12 41 13.1 51.0 290 82.9 62 12 41 12.7 51.0 282 80.5 63 12 41 12.4 50.9 277 79.2 64 12 41 12.8 51.1 291 83.0 65 12 41 12.6 51.0 283 80.9 66 18 42 13.0 51.0 289 82.5 67 18 43 13.4 51.0 294 84.1 68 18 42 13.0 51.0 288 82.3 69 18 42 13.0 51.0 291 83.2 70 18 41 13.4 51.0 293 83.8 71 18 43 12.9 51.1 289 82.5 72 18 40 13.3 50.9 290 82.8 73 18 42 12.8 50.9 275 78.7 74 18 38 12.9 51.1 295 84.2 75 18 42 12.8 50.9 280 79.9 76 18 43 13.2 51.0 288 82.4 77 18 43 12.5 51.0 280 79.9 78 18 43 12.8 51.0 284 81.1 79 18 41 12.6 51.0 279 79.8 80 18 42 13.1 51.0 293 83.9 81 18 42 12.7 51.0 296 84.7 82 18 42 13.7 51.0 299 85.5 83 18 41 13.0 51.1 287 81.9 84 15 43 12.9 50.8 285 81.4 85 15 42 13.3 51.0 289 82.6

Pile Dynamics, Inc. Page 6 of 17

86 15 41 12.9 51.1 288 82.3 87 15 42 12.9 50.9 290 83.0 88 15 41 13.6 51.0 301 86.0 89 15 41 12.9 51.0 295 84.3 90 15 42 13.2 51.0 289 82.5 91 15 43 12.8 51.0 297 84.8 92 15 42 12.9 50.7 285 81.4 93 15 41 13.2 51.1 299 85.6 94 15 42 13.2 51.0 294 84.0 95 15 42 13.3 50.9 302 86.3 96 15 42 13.0 51.0 299 85.5 97 15 42 13.1 51.0 290 82.9 98 15 41 13.0 50.8 279 79.8

Average 42 13.0 51.0 290 82.9 Std Dev 1 0.3 0.1 7 1.9

Maximum 43 13.7 51.1 302 86.3 Minimum 38 12.5 50.7 275 78.7

N-value: 33

Sample Interval Time: 50.62 seconds.

Pile Dynamics, Inc. Page 7 of 17

D-83 5 Wessam Zanaty Test date: 12/4/2020

A20-OO4

AR: 1.42 in^2 SP: 0.492 k/ft3 LE: 25.29 ft EM: 30000 ksi WS: 16807.9 ft/s

Depth: (20.00 - 21.50 ft], displaying BN: 153 F@25.29 ft (60 kips) V@25.29 ft (23.7 ft/s)

A2,4 F1,3

F1 : [150NWJ1] 210.83 PDICAL (1) FF1 A2 (PR): [K3719] 368 mv/6.4v/5000g (1) VF1 F3 : [150NWJ2] 212.78 PDICAL (1) FF1 A4 (PR): [K5674] 345 mv/6.4v/5000g (1) VF1

BL# BC FMX VMX BPM EFV ETR

/6" kips ft/s bpm ft-lb %

100 10 45 14.7 23.4 304 86.8 101 10 43 14.0 50.6 303 86.5 102 10 44 13.7 51.0 308 88.1 103 10 43 13.2 50.9 300 85.8 104 10 44 13.5 50.8 304 86.9 105 10 44 13.3 51.0 310 88.6 106 10 43 12.7 51.0 305 87.0 107 10 44 13.2 50.9 310 88.7 108 10 41 13.1 50.7 302 86.4 109 21 42 13.2 51.0 299 85.3 110 21 44 13.3 51.0 309 88.3 111 21 43 13.1 50.9 308 87.9 112 21 42 13.1 51.1 306 87.4 113 21 43 13.4 51.0 307 87.8 114 21 42 13.2 50.8 305 87.0 115 21 42 12.6 51.0 299 85.5 116 21 42 12.5 50.9 297 85.0 117 21 42 13.1 50.9 300 85.8 118 21 43 13.2 50.9 307 87.8 119 21 42 12.7 50.8 304 86.8 120 21 42 13.0 50.8 299 85.4 121 21 42 12.9 51.1 307 87.6 122 21 43 12.9 50.9 311 88.7 123 21 42 13.3 50.9 315 89.9 124 21 43 12.9 51.0 306 87.5 125 21 43 13.5 50.9 310 88.6 126 21 44 13.7 50.9 316 90.2 127 21 43 13.4 50.9 311 88.8 128 21 45 13.2 51.0 304 86.8 129 21 45 13.5 50.8 316 90.2 130 26 44 13.0 51.0 302 86.4

Pile Dynamics, Inc. Page 8 of 17

131 26 45 12.9 50.9 300 85.7 132 26 44 13.0 51.0 304 86.7 133 26 43 12.5 51.0 299 85.3 134 26 43 12.7 50.8 300 85.7 135 26 42 13.1 50.9 304 86.9 136 26 42 12.2 51.0 300 85.6 137 26 42 12.4 50.8 303 86.6 138 26 42 13.0 51.0 299 85.5 139 26 43 12.9 50.8 307 87.7 140 26 42 12.9 51.0 301 86.1 141 26 43 13.1 50.8 312 89.0 142 26 44 13.0 50.9 311 88.9 143 26 43 12.7 51.0 300 85.6 144 26 44 13.1 51.0 304 86.8 145 26 42 12.4 50.9 296 84.6 146 26 42 12.5 51.0 301 85.9 147 26 42 12.5 50.9 299 85.4 148 26 43 12.8 50.8 302 86.3 149 26 44 13.1 51.0 303 86.7 150 26 42 12.4 50.7 298 85.1 151 26 43 13.1 50.8 302 86.3 152 26 45 13.0 51.0 307 87.7 153 26 43 12.5 51.1 301 86.0 154 26 43 12.9 50.8 310 88.5 155 26 45 13.2 50.7 308 87.9

Average 43 13.0 50.9 304 87.0 Std Dev 1 0.3 0.1 5 1.4

Maximum 45 13.7 51.1 316 90.2 Minimum 42 12.2 50.7 296 84.6

N-value: 47

Sample Interval Time: 64.83 seconds.

Pile Dynamics, Inc. Page 9 of 17

D-83 5 Wessam Zanaty Test date: 12/4/2020

A20-OO4

AR: 1.42 in^2 SP: 0.492 k/ft3 LE: 30.29 ft EM: 30000 ksi WS: 16807.9 ft/s

Depth: (25.00 - 26.50 ft], displaying BN: 191 F@30.29 ft (60 kips) V@30.29 ft (23.7 ft/s)

A2,4 F1,3

F1 : [150NWJ1] 210.83 PDICAL (1) FF1 A2 (PR): [K3719] 368 mv/6.4v/5000g (1) VF1 F3 : [150NWJ2] 212.78 PDICAL (1) FF1 A4 (PR): [K5674] 345 mv/6.4v/5000g (1) VF1

BL# BC FMX VMX BPM EFV ETR

/6" kips ft/s bpm ft-lb %

157 8 44 16.2 13.5 309 88.4 158 8 45 15.3 50.5 313 89.3 159 8 42 15.3 50.8 309 88.2 160 8 44 14.1 51.0 312 89.2 161 8 44 14.0 50.8 305 87.0 162 8 44 13.9 50.8 305 87.0 163 8 42 14.0 50.8 309 88.3 164 8 40 14.0 51.1 311 88.9 165 14 41 14.0 50.9 305 87.1 166 14 40 13.4 50.8 298 85.0 167 14 39 13.7 51.1 297 84.8 168 14 41 13.8 50.7 295 84.4 169 14 42 13.3 51.0 297 84.9 170 14 43 13.3 50.8 296 84.5 171 14 43 13.1 50.9 287 82.1 172 14 43 13.2 51.0 300 85.7 173 14 43 13.0 50.9 307 87.6 174 14 42 13.3 50.8 307 87.8 175 14 44 13.0 50.9 302 86.4 176 14 43 12.9 51.0 300 85.8 177 14 43 12.9 50.9 298 85.0 178 14 43 12.8 50.8 305 87.0 179 15 43 13.2 50.9 310 88.5 180 15 44 13.3 50.9 304 86.7 181 15 43 12.9 50.8 310 88.6 182 15 43 12.7 51.0 301 86.0 183 15 43 12.7 50.9 292 83.3 184 15 44 12.8 50.7 309 88.1 185 15 44 12.7 51.0 299 85.5 186 15 44 12.7 50.8 308 87.9 187 15 42 12.7 50.9 296 84.4

Pile Dynamics, Inc. Page 10 of 17

188 15 44 12.8 51.0 306 87.4 189 15 44 12.6 51.0 296 84.5 190 15 45 12.8 50.9 308 88.0 191 15 43 12.6 50.9 298 85.1 192 15 43 12.4 50.9 297 85.0 193 15 40 12.8 50.8 286 81.7

Average 43 13.0 50.9 300 85.8 Std Dev 1 0.4 0.1 6 1.8

Maximum 45 14.0 51.1 310 88.6 Minimum 39 12.4 50.7 286 81.7

N-value: 29

Sample Interval Time: 42.45 seconds.

Pile Dynamics, Inc. Page 11 of 17

D-83 5 Wessam Zanaty Test date: 12/4/2020

A20-OO4

AR: 1.42 in^2 SP: 0.492 k/ft3 LE: 35.29 ft EM: 30000 ksi WS: 16807.9 ft/s

Depth: (30.00 - 31.50 ft], displaying BN: 271 F@35.29 ft (60 kips) V@35.29 ft (23.7 ft/s)

A2,4 F1,3

F1 : [150NWJ1] 210.83 PDICAL (1) FF1 A2 (PR): [K3719] 368 mv/6.4v/5000g (1) VF1 F3 : [150NWJ2] 212.78 PDICAL (1) FF1 A4 (PR): [K5674] 345 mv/6.4v/5000g (1) VF1

BL# BC FMX VMX BPM EFV ETR

/6" kips ft/s bpm ft-lb %

194 20 46 15.0 1.9 299 85.3 195 20 46 14.5 50.3 297 84.8 196 20 44 14.0 50.6 288 82.3 197 20 43 13.0 50.5 298 85.0 198 20 42 12.9 50.8 293 83.6 199 20 43 12.8 50.8 301 85.9 200 20 43 12.3 50.7 299 85.5 201 20 42 12.9 50.8 298 85.1 202 20 41 12.7 50.6 299 85.3 203 20 41 12.6 50.8 297 84.9 204 20 42 12.5 50.8 296 84.7 205 20 39 12.8 50.8 297 84.9 206 20 41 12.7 50.6 293 83.8 207 20 41 13.0 50.8 303 86.6 208 20 39 12.5 50.7 301 85.9 209 20 39 13.0 50.7 300 85.7 210 20 42 12.8 50.8 295 84.4 211 20 40 12.9 50.8 299 85.4 212 20 41 12.6 50.7 297 84.9 213 20 40 12.7 50.7 293 83.7 214 31 41 12.6 50.8 297 84.9 215 31 38 12.9 50.7 300 85.7 216 31 40 12.7 50.8 299 85.4 217 31 40 12.3 50.9 293 83.8 218 31 38 12.9 50.7 301 86.1 219 31 39 12.7 50.7 299 85.5 220 31 40 12.4 50.7 287 82.0 221 31 38 12.9 50.8 298 85.1 222 31 40 12.4 50.7 289 82.5 223 31 39 13.1 50.7 304 86.8 224 31 39 12.7 50.8 294 84.1

Pile Dynamics, Inc. Page 12 of 17

225 31 41 12.7 50.7 299 85.4 226 31 42 12.7 50.8 294 83.9 227 31 40 12.7 50.7 299 85.4 228 31 42 12.5 50.7 293 83.7 229 31 38 12.8 50.6 297 84.8 230 31 38 13.0 50.7 309 88.2 231 31 39 12.8 50.8 304 86.9 232 31 42 12.2 50.8 283 80.8 233 31 42 12.4 50.8 289 82.7 234 31 42 12.5 50.6 291 83.0 235 31 38 12.9 50.5 304 86.7 236 31 37 12.7 50.8 298 85.1 237 31 39 12.2 50.7 288 82.3 238 31 41 12.6 50.6 291 83.1 239 31 41 12.2 50.5 294 84.1 240 31 42 12.3 50.8 294 84.0 241 31 39 12.7 50.7 302 86.2 242 31 37 12.6 50.6 298 85.1 243 31 40 12.7 50.8 297 84.8 244 31 39 12.4 50.6 298 85.2 245 29 39 12.7 50.7 299 85.3 246 29 39 12.6 50.7 298 85.2 247 29 41 12.6 50.8 298 85.3 248 29 39 12.6 50.5 301 85.9 249 29 37 12.6 50.7 298 85.1 250 29 40 12.9 50.8 304 86.9 251 29 39 12.7 50.5 303 86.5 252 29 41 12.9 50.6 297 84.9 253 29 41 12.5 50.8 294 83.9 254 29 38 12.7 50.8 304 86.8 255 29 38 12.6 50.7 302 86.3 256 29 39 12.6 50.7 302 86.3 257 29 39 12.5 50.7 303 86.7 258 29 40 12.8 50.7 301 86.1 259 29 39 12.5 50.5 300 85.8 260 29 40 12.3 50.8 297 84.9 261 29 42 12.6 50.6 302 86.2 262 29 39 12.1 50.6 297 84.9 263 29 43 12.6 50.7 299 85.5 264 29 42 12.5 50.6 293 83.7 265 29 43 12.4 50.7 298 85.1 266 29 43 12.3 50.7 291 83.1 267 29 41 12.5 50.1 302 86.3 268 29 40 12.7 51.7 303 86.5 269 29 40 12.0 50.8 300 85.7 270 29 40 12.5 50.7 297 84.9 271 29 40 12.6 50.6 296 84.7 272 29 41 12.1 50.6 304 86.8 273 29 44 12.3 50.6 285 81.5

Average 40 12.6 50.7 297 85.0 Std Dev 2 0.2 0.2 5 1.5

Maximum 44 13.1 51.7 309 88.2 Minimum 37 12.0 50.1 283 80.8

N-value: 60

Sample Interval Time: 93.51 seconds.

Pile Dynamics, Inc. Page 13 of 17

D-83 5 Wessam Zanaty Test date: 12/4/2020

A20-OO4

AR: 1.42 in^2 SP: 0.492 k/ft3 LE: 40.29 ft EM: 30000 ksi WS: 16807.9 ft/s

Depth: (35.00 - 36.50 ft], displaying BN: 332 F@40.29 ft (60 kips) V@40.29 ft (23.7 ft/s)

A2 F1,3

F1 : [150NWJ1] 210.83 PDICAL (1) FF1 A2 (PR): [K3719] 368 mv/6.4v/5000g (1) VF1

F3 : [150NWJ2] 212.78 PDICAL (1) FF1

BL# BC FMX VMX BPM EFV ETR

/6" kips ft/s bpm ft-lb %

274 15 41 15.9 1.9 294 83.9 275 15 43 17.0 50.1 290 83.0 276 15 42 17.6 50.5 289 82.5 277 15 41 17.2 50.7 288 82.3 278 15 41 18.3 50.5 291 83.1 279 15 39 19.0 50.6 294 83.9 280 15 40 17.9 50.6 288 82.3 281 15 38 18.4 50.8 286 81.8 282 15 39 18.4 50.7 288 82.2 283 15 41 18.9 50.4 291 83.2 284 15 39 18.2 50.8 291 83.1 285 15 41 19.5 50.6 297 84.8 286 15 40 16.0 50.0 280 79.9 287 15 40 17.5 50.7 289 82.6 288 15 40 17.6 50.4 286 81.7 289 23 40 18.3 50.6 291 83.2 290 23 38 19.2 50.8 300 85.7 291 23 39 15.0 50.4 284 81.2 292 23 40 16.8 50.7 289 82.6 293 23 40 17.0 50.7 288 82.2 294 23 41 18.6 50.5 300 85.8 295 23 42 16.6 50.5 285 81.3 296 23 42 17.8 50.6 298 85.1 297 23 41 16.8 50.6 288 82.4 298 23 41 17.9 50.6 299 85.5 299 23 41 17.8 50.7 296 84.5 300 23 42 17.2 50.6 288 82.4 301 23 43 17.7 50.6 290 82.8 302 23 40 17.4 50.4 299 85.5 303 23 39 18.6 50.8 295 84.2 304 23 38 17.3 50.5 291 83.1

Pile Dynamics, Inc. Page 14 of 17

305 23 34 18.1 50.6 288 82.4 306 23 38 16.2 50.3 297 84.9 307 23 40 16.6 50.9 298 85.1 308 23 40 17.2 50.5 299 85.4 309 23 42 17.1 50.6 300 85.8 310 23 40 15.3 50.7 302 86.2 311 23 38 16.0 50.5 297 84.9 312 23 39 15.3 50.7 297 85.0 313 23 39 15.6 50.6 297 84.9 314 23 41 16.8 50.6 295 84.2 315 23 42 16.9 50.5 303 86.5 316 23 41 15.9 50.5 291 83.2 317 23 41 16.4 50.7 293 83.8 318 23 41 15.9 50.6 288 82.4 319 23 41 17.8 50.5 307 87.7 320 23 41 16.0 50.5 293 83.6 321 23 43 16.2 50.6 300 85.7 322 23 41 17.0 50.5 300 85.6 323 23 41 16.8 50.7 301 86.1 324 23 41 17.3 50.5 300 85.7 325 23 40 15.8 50.5 291 83.2 326 23 41 16.3 50.6 293 83.6 327 23 41 16.0 50.6 290 83.0 328 23 41 16.1 50.6 292 83.3 329 23 41 16.2 50.5 300 85.7 330 23 41 17.8 50.6 312 89.1 331 23 41 17.3 50.4 308 88.0 332 23 41 16.2 50.7 298 85.2 333 23 41 17.3 50.6 304 86.7 334 23 39 18.0 50.5 286 81.6

Average 40 16.9 50.6 296 84.5 Std Dev 1 0.9 0.1 6 1.8

Maximum 43 19.2 50.9 312 89.1 Minimum 34 15.0 50.3 284 81.2

N-value: 46

Sample Interval Time: 71.18 seconds.

Pile Dynamics, Inc. Page 15 of 17

D-83 5 Wessam Zanaty Test date: 12/4/2020

A20-OO4

AR: 1.42 in^2 SP: 0.492 k/ft3 LE: 45.29 ft EM: 30000 ksi WS: 16807.9 ft/s

Depth: (40.00 - 41.50 ft], displaying BN: 391 F@45.29 ft (60 kips) V@45.29 ft (23.7 ft/s)

A2,4 F1,3

F1 : [150NWJ1] 210.83 PDICAL (1) FF1 A2 (PR): [K3719] 368 mv/6.4v/5000g (1) VF1 F3 : [150NWJ2] 212.78 PDICAL (1) FF1 A4 (PR): [K5674] 345 mv/6.4v/5000g (1) VF1

BL# BC FMX VMX BPM EFV ETR

/6" kips ft/s bpm ft-lb %

335 11 38 16.4 1.9 308 88.1 336 11 37 15.2 27.4 311 88.8 337 11 37 14.1 50.0 304 87.0 338 11 37 13.8 50.4 302 86.3 339 11 36 13.9 50.6 303 86.6 340 11 38 14.0 50.5 300 85.8 341 11 37 14.2 50.4 308 87.9 342 11 36 13.8 50.5 303 86.6 343 11 37 14.1 50.7 303 86.5 344 11 38 13.7 50.7 297 84.9 345 11 37 14.0 50.4 307 87.7 346 19 38 14.0 50.5 303 86.7 347 19 37 13.6 50.7 295 84.2 348 19 39 13.5 50.6 297 84.9 349 19 37 13.5 50.5 296 84.5 350 19 37 13.6 50.5 299 85.3 351 19 37 13.6 50.7 294 84.1 352 19 37 13.8 50.5 300 85.7 353 19 38 13.8 50.7 301 86.0 354 19 37 14.2 50.4 303 86.7 355 19 37 14.0 50.4 303 86.5 356 19 40 13.7 50.3 300 85.7 357 19 39 13.9 50.5 305 87.0 358 19 39 14.2 50.6 309 88.4 359 19 39 13.8 50.5 306 87.5 360 19 38 13.9 50.6 304 86.7 361 19 39 13.9 50.5 303 86.5 362 19 38 13.7 50.4 300 85.8 363 19 36 13.5 50.6 297 84.8 364 19 37 13.8 50.7 305 87.1 365 29 38 13.4 50.5 297 85.0

Pile Dynamics, Inc. Page 16 of 17

366 29 36 13.6 50.5 297 84.8 367 29 36 13.4 50.6 301 85.9 368 29 35 13.5 50.6 300 85.8 369 29 38 13.2 50.5 297 85.0 370 29 38 13.4 50.5 300 85.8 371 29 37 13.5 50.4 298 85.0 372 29 37 13.5 50.6 299 85.4 373 29 36 13.6 50.7 304 86.8 374 29 38 13.1 50.4 296 84.5 375 29 37 12.8 50.4 293 83.6 376 29 38 12.8 50.6 298 85.1 377 29 38 13.4 50.7 301 86.1 378 29 37 13.2 50.4 296 84.7 379 29 37 12.9 50.7 300 85.8 380 29 38 12.9 50.3 296 84.6 381 29 39 13.0 50.4 301 86.0 382 29 38 12.9 50.7 297 84.9 383 29 37 12.9 50.5 302 86.4 384 29 39 13.3 50.5 303 86.7 385 29 39 13.2 50.5 303 86.5 386 29 40 12.9 50.7 307 87.6 387 29 39 13.2 50.4 299 85.6 388 29 37 13.1 50.6 301 86.1 389 29 38 12.7 50.6 299 85.4 390 29 38 13.0 50.5 297 85.0 391 29 38 12.9 50.4 305 87.1 392 29 38 13.2 50.6 301 86.0 393 29 39 13.2 50.5 292 83.4

Average 38 13.4 50.5 300 85.7 Std Dev 1 0.4 0.1 4 1.1

Maximum 40 14.2 50.7 309 88.4 Minimum 35 12.7 50.3 292 83.4

N-value: 48

Sample Interval Time: 69.90 seconds.

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20179123.009A/SAC21R121563 Page C-1 May 24, 2021

APPENDIX C

CURRENT INVESTIGATION VANE SHEAR TEST DATA RESULTS

LIST OF ATTACHMENTS

C-1 Field Vane Test Site Investigation, SREL-3/4 Project, Sacramento, California, Project No. 20179123.009A prepared by Gregg dated November 3, 2020.

C-2 Field Vane Test Site Investigation, SREL-3/4 Project, Sacramento, California, Project No. 20179123.009A prepared by Gregg dated January 22, 2021.

Figure C-3 Field Vane Shear Test Correction – Contract 3 Figure C-4 Field Vane Shear Test Results for Boring 2F-20-013 Figure C-5 Field Vane Shear Test Results for Boring 2F-20-015 Figure C-6 Field Vane Shear Test Results for Boring 2F-20-018 Figure C-7 Field Vane Shear Test Correction – Contract 4 Figure C-8 Field Vane Shear Test Results for Boring 2F-20-009 Figure C-9 Field Vane Shear Test Results for Boring 2F-20-022

GREGG DRILLING, LLC.

GEOTECHNICAL AND ENVIRONMENTAL INVESTIGATION SERVICES

2726 Walnut Ave. Signal Hill, California 90755 (562) 427-6899 FAX (562) 427-3314 950 Howe Road. Martinez, California 94553 (925) 313-5800 FAX (925) 313-0302

November 3, 2020

Attn: Kimberly Brown

Subject: Field Vane Test Site Investigation Various Sites West Sacramento, California Project Number: 20179123.009A

Dear Ms. Brown:

The following report presents the results of GREGG Drilling site investigation for the above referenced site. The following testing services were performed:

1 Cone Penetration Tests (CPTU) 2 Pore Pressure Dissipation Tests (PPD) 3 Seismic Cone Penetration Tests (SCPTU) 4 UVOST Laser Induced Fluorescence (UVOST) 5 Groundwater Sampling (GWS) 6 Soil Sampling (SS) 7 Vapor Sampling (VS) 8 Pressuremeter Testing (PMT) 9 Vane Shear Testing (VST) 10 Dilatometer Testing (DMT)

A list of reference papers providing additional background on the specific tests conducted is provided in the bibliography following the text of the report. If you would like a copy of any of these publications or should you have any questions or comments regarding the contents of this report, please do not hesitate to contact me at 949-903-6873.

Gregg Drilling, LLC.

CPT Reports Team

SREL-3/4 Project Sacramento, California Project No. 20179123.009A

Figure C-1 www.greggdrilling.com

Cone Penetration Test Sounding Summary

-Table 1-

Boring ID Date Test Depth (ft) Remolded Test Performed 2F-20-013 10/23/20 5.67 Y 2F-20-013 10/23/20 7.50 Y 2F-20-013 10/23/20 19.17 Y 2F-20-013 10/23/20 23.00 Y 2F-20-013 10/23/20 25.50 Y 2F-20-015 10/26/20 23.50 N 2F-20-015 10/26/20 27.50 N 2F-20-015 10/26/20 30.00 Y 2F-20-015 10/26/20 33.50 Y 2F-20-015 10/26/20 41.00 N 2F-20-015 10/26/20 47.50 N 2F-20-015 10/26/20 50.00 N 2F-20-018 10/22/20 5.83 Y 2F-20-018 10/22/20 7.50 Y 2F-20-018 10/22/20 10.00 Y 2F-20-018 10/22/20 12.50 Y 2F-20-018 10/22/20 14.00 Y 2F-20-022 10/27/20 11.00 Y 2F-20-022 10/27/20 13.00 Y 2F-20-022 10/27/20 19.00 Y 2F-20-022 10/27/20 21.00 Y 2F-20-022 10/27/20 23.50 Y 2F-20-022 10/27/20 29.00 Y 2F-20-022 10/27/20 34.00 Y 2F-20-022 10/27/20 40.00 Y

Bibliography

Lunne, T., Robertson, P.K. and Powell, J.J.M., “Cone Penetration Testing in Geotechnical Practice” E & FN Spon. ISBN 0 419 23750, 1997

Roberston, P.K., “Soil Classification using the Cone Penetration Test”, Canadian Geotechnical Journal, Vol. 27, 1990 pp. 151-158.

Mayne, P.W., “NHI (2002) Manual on Subsurface Investigations: Geotechnical Site Characterization”, available through www.ce.gatech.edu/~geosys/Faculty/Mayne/papers/index.html, Section 5.3, pp. 107-112.

Robertson, P.K., R.G. Campanella, D. Gillespie and A. Rice, “Seismic CPT to Measure In-Situ Shear Wave Velocity”, Journal of Geotechnical Engineering ASCE, Vol. 112, No. 8, 1986

pp. 791-803.

Robertson, P.K., Sully, J., Woeller, D.J., Lunne, T., Powell, J.J.M., and Gillespie, D.J., "Guidelines for Estimating Consolidation Parameters in Soils from Piezocone Tests", Canadian Geotechnical Journal, Vol. 29, No. 4, August 1992, pp. 539-550.

Robertson, P.K., T. Lunne and J.J.M. Powell, “Geo-Environmental Application of Penetration Testing”, Geotechnical Site Characterization, Robertson & Mayne (editors), 1998 Balkema, Rotterdam, ISBN 90 5410 939 4 pp 35-47.

Campanella, R.G. and I. Weemees, “Development and Use of An Electrical Resistivity Cone for Groundwater Contamination Studies”, Canadian Geotechnical Journal, Vol. 27 No. 5, 1990 pp. 557-567.

DeGroot, D.J. and A.J. Lutenegger, “Reliability of Soil Gas Sampling and Characterization Techniques”, International Site Characterization Conference - Atlanta, 1998.

Woeller, D.J., P.K. Robertson, T.J. Boyd and Dave Thomas, “Detection of Polyaromatic Hydrocarbon Contaminants Using the UVIF-CPT”, 53rd Canadian Geotechnical Conference Montreal, QC October pp. 733-739, 2000.

Zemo, D.A., T.A. Delfino, J.D. Gallinatti, V.A. Baker and L.R. Hilpert, “Field Comparison of Analytical Results from Discrete-Depth Groundwater Samplers” BAT EnviroProbe and QED HydroPunch, Sixth national Outdoor Action Conference, Las Vegas, Nevada Proceedings, 1992, pp 299-312.

Copies of ASTM Standards are available through www.astm.org

Revised 11/04/2020 i

Geonor Field Vane Test (VST)

Gregg Drilling uses a Geonor H 10 vane to measure the in place undrained shear strength (suv) of soft to stiff clays & silts. An appropriate sized vane is selected based on the anticipated peak undrained shear strength for the soils encountered at the site. A small vane is typically used for stiff soils, whereas the large vane is required in softer soils. Gregg’s Geonor field vane test can be operated with either a 55mm or a 65mm diameter vane.

The vane is advanced to the test depth by pushing on small diameter vane rods. Once the vane rods and the vane reach the test depth the torque recording head is placed over the push rods and locked to the vane rod string. The vane rods are then loaded using the torque recording head until yielding of the surrounding soil occurs. Once yielding occurs, rotation of the vane is continued in order to characterize the soil’s post yielding shear resistance, Figure FVST. The vane is then manually rotated clockwise twenty times to completely remold the soil. Once the soil is remolded, themotor is again engaged onto the torque head. The vane is then rotated to record the remolded strength of the soil. Measurements can be taken with both a manual read out and a digital read out for increased accuracy.

For further information refer to Mayne, 2002 and Greig et al. 1987.

Figure FVST

CLIENT Kleinfelder SITE 171 Portinao Cr., Sacramento

LOCATION 2F-20-013

VANE TYPE Geonor H-10 VANE DIAMETER, d (mm) 55 VANE LENGTH, I (mm) 110

DEPTH DEPTH PEAK SHEAR SHEAR STEADY-STATE SHEAR SHEAR

INSTRUMENT READING STRENGTH STRENGTH INSTRUMENT READING STRENGTH STRENGTH SENSITIVITY

(m) (ft) (N) (kPa) (psf) (N) (kPa) (psf)

1.73 5.67 223.99 64.29 1342.93 42.57 12.23 255.39 5.3

2.29 7.50 227.29 65.23 1362.70 32.68 9.38 196.03 7.0

5.84 19.17 154.72 44.41 927.63 22.78 6.54 136.67 6.8

7.01 23.00 220.69 63.34 1323.15 26.08 7.49 156.45 8.5

7.77 25.50 227.29 65.23 1362.70 42.57 12.23 255.39 5.3

REMOLDED

0 500 1000 1500 2000 2500

De pt h (ft

Shear Strength (psf)

171 Portinao Cr., BH 2F 20 013

Shear Strength

Remolded Strength

Location: 2F 20 013 64.29 kPa Depth: 5.67 1342.93 psf

Steady state remolded: 255.39 psf

Max Shear Strength:

0 5 10 15 20 25 30 35 40 45 50

Sh ea rS tr en gt h (p sf

Time

Undisturbed Test

Remolded Test

Location: 2F 20 013 65.23 kPa Depth: 7.5 1362.70 psf

Steady state remolded: 196.03 psf

Max Shear Strength:

0 5 10 15 20 25 30 35 40 45 50

Sh ea rS tr en gt h (p sf

Time

Undisturbed Test

Location: 2F 20 013 44.41 kPa Depth: 19.17 927.63 psf

Steady state remolded: 136.67 psf

Max Shear Strength:

0 5 10 15 20 25 30 35 40 45 50

Sh ea rS tr en gt h (p sf

Time

Undisturbed Test

Location: 2F 20 013 63.34 kPa Depth: 23 1323.15 psf

Steady state remolded: 156.45 psf

Max Shear Strength:

0 5 10 15 20 25 30 35 40 45 50

Sh ea rS tr en gt h (p sf

Time

Undisturbed Test

Location: 2F 20 013 65.23 kPa Depth: 25.5 1362.70 psf

Steady state remolded: 255.39 psf

Max Shear Strength:

0 5 10 15 20 25 30 35 40 45 50

Sh ea rS tr en gt h (p sf

Time

Undisturbed Test

SITE Levee Crown near Marlton Ct., Sacramento

LOCATION 2F-20-015

VANE TYPE Geonor H-10 VANE DIAMETER, d (mm) 55 VANE LENGTH, I (mm) 110

DEPTH DEPTH PEAK SHEAR SHEAR STEADY-STATE SHEAR SHEAR

INSTRUMENT READING STRENGTH STRENGTH INSTRUMENT READING STRENGTH STRENGTH SENSITIVITY

(m) (ft) (N) (kPa) (psf) (N) (kPa) (psf)

7.16 23.50 296.56 85.11 1778.00 NA NA NA NA

8.38 27.50 299.86 86.06 1797.77 NA NA NA NA

9.15 30.00 273.47 78.49 1639.57 49.17 14.12 294.96 5.6

10.21 33.50 253.68 72.81 1520.91 52.47 15.07 314.75 4.8

12.50 41.00 299.86 86.06 1797.77 NA NA NA NA

14.48 47.50 299.86 86.06 1797.77 NA NA NA NA

15.24 50.00 299.86 86.06 1797.77 NA NA NA NA

0 500 1000 1500 2000 2500

De pt h (ft

Shear Strength (psf)

Levee Crown near Marlton Ct., BH 2F 20 015

Shear Strength

Location: 2F 20 015 85.11 kPa Depth: 23.5 1778.00 psf

Steady state remolded: NA psf

Max Shear Strength:

0 5 10 15 20 25 30 35 40 45 50

Sh ea rS tr en gt h (p sf

Time

Undisturbed Test

Location: 2F 20 015 86.06 kPa Depth: 27.5 1797.77 psf

Steady state remolded: NA psf

Max Shear Strength:

0 5 10 15 20 25 30 35 40 45 50

Sh ea rS tr en gt h (p sf

Time

Undisturbed Test

Location: 2F 20 015 78.49 kPa Depth: 30 1639.57 psf

Steady state remolded: 294.96 psf

Max Shear Strength:

0 5 10 15 20 25 30 35 40 45 50

Sh ea rS tr en gt h (p sf

Time

Undisturbed Test

Location: 2F 20 015 72.81 kPa Depth: 33.5 1520.91 psf

Steady state remolded: 314.75 psf

Max Shear Strength:

0 5 10 15 20 25 30 35 40 45 50

Sh ea rS tr en gt h (p sf

Time

Undisturbed Test

Depth: 41 1797.77 psf

Steady state remolded: NA psf

Max Shear Strength:

0 5 10 15 20 25 30 35 40 45 50

Sh ea rS tr en gt h (p sf

Time

Undisturbed Test

Depth: 47.5 1797.77 psf

Steady state remolded: NA psf

Max Shear Strength:

0 5 10 15 20 25 30 35 40 45 50

Sh ea rS tr en gt h (p sf

Time

Undisturbed Test

Depth: 50 1797.77 psf

Steady state remolded: NA psf

Max Shear Strength:

0 5 10 15 20 25 30 35 40 45 50

Sh ea rS tr en gt h (p sf

Time

Undisturbed Test

SITE 340-370 Country River Way., Sacramento

LOCATION 2F-20-018

VANE TYPE Geonor H-10 VANE DIAMETER, d (mm) 55 VANE LENGTH, I (mm) 110

DEPTH DEPTH PEAK SHEAR SHEAR STEADY-STATE SHEAR SHEAR

INSTRUMENT READING STRENGTH STRENGTH INSTRUMENT READING STRENGTH STRENGTH SENSITIVITY

(m) (ft) (N) (kPa) (psf) (N) (kPa) (psf)

1.78 5.83 253.68 72.81 1520.91 39.28 11.28 235.60 6.5

2.29 7.50 260.28 74.70 1560.46 68.96 19.80 413.68 3.8

3.05 10.00 154.72 44.41 927.63 22.78 6.54 136.67 6.8

3.81 12.50 260.28 74.70 1560.46 49.17 14.12 294.96 5.3

4.27 14.00 200.90 57.66 1204.50 22.78 6.54 136.67 8.8

0 500 1000 1500 2000 2500

De pt h (ft

Shear Strength (psf)

340 370 Country River Way,…