2025-01648 Accepting SAFCA’s Urban Level of Flood Protection Reports (LR25-006) Part 11 — Sacramento City Council, October 21, 2025 (part 3 of 6)

Calculation No.: NASL Segment AR-14
Calculation Title: Post-Seismic Stability Analysis, Station 3306+10 Design Review and analysis
Required: Yes No
Calculation Type: Scoping Preliminary Final Voided
Superseded by Calculation No.:

ORIGINAL AND REVISED CALCULATIONS/ANALYSIS APPROVAL
Rev. __0__
Printed
Name/Signature/Date
Rev. ___1_
Printed
Name/Signature/Date
Rev. __2__
Printed
Name/Signature/Date
Originator: Ryan Hochstatter
12/18/23
Checked By: Edrei Espinosa
1/4/2024
Approved By: Meredith Beswick
1/5/2024
Other:

AFFECTED DOCUMENTS
Document
Number Document Title Rev. No.

Responsible Project
Manager Initials
1 North Area Streams Levee
System Seismic Performance
Summary Report
0 RECORD OF REVISION
Rev. Reason for Revision
0 Initial Release
1 Updated with Correct Number of Iterations for Landside Global Analysis (from 100 to 500), Correct Waterside Slope (from 3.35H:1V to 3.45H:1V), and 8x8 Blocks for Landside Block Analysis

Originated by: Ryan Hochstatter Date: 12/18/23
Checked by: Edrei Espinosa Date: 1/4/2024
Project No: 24001006.001A Calculation Number: 1
Project Name: North Area Streams Levee System Seismic
Performance Summary Report Revision: 0
Calculation Title: Post-Seismic Stability Page 2

Page 2 of 6 ends

ATTACHMENTS
Attachment
No. Title Pages in Attachment
1 Post-Seismic Slope Stability Analysis for Segment AR-14, Figures E1-E4 4
2 Seed-Harder Plot for Residual Strength (Figure 6-9, ULE Guidance Document) 1
3 Stratigraphy and Material Properties from American River 2015 GER (Segment 14 Transverse Cross Section, SiteSpecific Unit Weights, CL and Slurry Wall Parameters)3 Total Pages 8
Originated by: Ryan Hochstatter Date: 12/18/23
Checked by: Edrei Espinosa Date: 1/4/2024
Project No: 24001006.001A Calculation Number: 1
Project Name: North Area Streams Levee System Seismic
Performance Summary Report Revision: 0
Calculation Title: Post-Seismic Stability Page 3

Page 3 of 6 ends

1 Purpose
The purpose of this calculation is to analyze the post-seismic stability conditions for a cross section taken from analysis segment AR-14, station 3306+10 (boring 2F-97-06). To classify the segment as having Low Seismic Vulnerability, the Factor of Safety against slope stability failure must be greater than 1.3. 2 References
GeoStudio 2023.1.2, Seequent, Bentley Systems
URS (2015a). “ULE Geotechnical Evaluation Report (GER) Volume 1 and 2, American River Study Area, Urban Levee Evaluations Project, Contract 4600008101,” dated January 2015 (Issue date: 01-2015).

URS (2015b). “Guidance Document for Geotechnical Analyses, Urban Levee Geotechnical Evaluations Program, Contract 4600008101,” dated April 2015.
3 General
The seismic slope stability analysis was performed using a 2D Geometry model in SLOPE/W Version 2023.1.2. The analysis used the Spencer’s Method approach with 500 maximum iterations per Section

6.5.2 and Section 4.9 of the ULE Guidance Document (2015b). GeoStudio results are included as Figures E1 through E4 in Attachment 1.

The updated liquefaction analysis produces (N1)60 value of 9 for the Likely Liquefiable SP-SM layer. After the fines/classification correction, the (N1)60-cs value becomes 10. Using the Seed-Harder Plot for Residual Strength (Attachment 2) and the procedure described in Section 6.8.2.1 in the ULE Guidance Document (2015b), the residual undrained strength for the Likely Liquefiable layer was estimated as 235psf.

Stratigraphy, effective friction angle, and cohesion values from the 2015 URS Segment 14 Transverse Cross Section were used for the SM and GP layers. Per Section 5.8 of the ULE Guidance Document (2015b), site-specific field and laboratory results were used to select material properties not listed in the slope stability analysis from the URS American River GER (2015a). The SPT-based liquefaction analysis for Boring ID 2F-97-06 was used to estimate unit weights for the soil layers. The slurry wall unit weight was selected as 100pcf from the American River GER (2015a) material properties for the Reach A existing soil-cement-bentonite wall (GER Table B1-A-1). This table was also used to select the undrained friction angle and cohesion values for the CL layers. The aforementioned sources are included as Attachment 3.

Page 4 of 6 ends

Table 3.1 – Material Properties
Material Unit Weight
(pcf) Ф’ (dgs) C’ (psf)
1 – SM 125 32 0
2 – SM 120 32 0
3 – SP-SM
(Likely
Liquefiable)
125 0
235
(residual
undrained
strength)
4 – GP 130 35 0
5 – CL 125 7 960
6 – CL Cap 125 7 960
7 – Cutoff Wall 100 0 500
Table 3.2
Post-Seismic Slope Stability Factors of Safety
Segment
ID
Analysis
Station
Landside
Global
FOS
Landside
Block
FOS
Waterside
Global
FOS
Waterside
Block
FOS
Factor of
Safety
Required
AR-14 3306+10 3.33 2.69 2.32 2.05 > 1.3
Originated by: Ryan Hochstatter Date: 12/18/23
Checked by: Edrei Espinosa Date: 1/4/2024
Project No: 24001006.001A Calculation Number: 1
Project Name: North Area Streams Levee System Seismic
Performance Summary Report Revision: 0
Calculation Title: Post-Seismic Stability Page 5

Page 5 of 6 ends

4 Stability Analysis (All 4 Slope Analyses)
Table 4.1: Review of Analysis Inputs
Geometries: Notes: Checked by: Initials: Date:

Embankment crest elevation 53.1ft Edrei Espinosa EE 1/4/2024 Embankment toe elevation 43.3ft Edrei Espinosa EE 1/4/2024 Piezometric surface Elevation 21.9ft Edrei Espinosa EE 1/4/2024 Landside slope 3H:1V Edrei Espinosa EE 1/4/2024
Waterside slope 3.45H:1V Edrei Espinosa EE 1/4/2024
Topography matches cross section Yes Edrei Espinosa EE 1/4/2024 Stratigraphy matches cross section Yes Edrei Espinosa EE 1/4/2024 Model extents match cross section Yes Edrei Espinosa EE 1/4/2024 Slope Analysis Inputs: Notes: Checked by: Initials: Date:

Correct analysis type (entry exit & block) Both for waterside and landside Edrei Espinosa EE 1/4/2024 Specific analysis inputs (convergence, tolerance) 500 maximum iterations Edrei Espinosa EE 1/4/2024 Correct slip surface routine Yes Edrei Espinosa EE 1/4/2024 Minimum slip surface appropriate Yes, 8x8 blocks with 12 points Edrei Espinosa EE 1/4/2024 Assigned units match units in the model (ft, psf) Yes Edrei Espinosa EE 1/2/2024 Correct material assigned to each region Yes Edrei Espinosa EE 1/2/2024 Correct saturated unit weight, cohesion, and phi
assigned to each material Yes Edrei Espinosa EE 1/2/2024 Enough radius increments and number of
increments over the range Yes, 8x8 blocks with 12 points Edrei Espinosa EE 1/4/2024 Critical slip surface not bound by range Yes Edrei Espinosa EE 1/4/2024 Originated by: Ryan Hochstatter Date: 12/18/23
Checked by: Edrei Espinosa Date: 1/4/2024
Project No: 24001006.001A Calculation Number: 1Project Name: North Area Streams Levee System Seismic Performance Summary Report Revision: 0 Calculation Title: Post-Seismic Stability Page 6

Page 6 of 6 ends

Table 4.2 - Summary of Stability Results
Run
# Listing of Stability Analysis Type / File Name Analyst Summary of Findings Reviewer Initials Date Initials Date 1 Post-Seismic Landside Global Stability Analysis / AR14 Landside Circular Stability Analysis R1.gsz
RH 1/2/23 Factor of Safety = 3.33 MB 1/5/24
1 Post-Seismic Landside Block Stability Analysis / AR14 Landside Wedge Optimized Stability Analysis R1.gsz
RH 1/2/23 Factor of Safety = 2.65 MB 1/5/24
1 Post-Seismic Waterside Global Stability Analysis / AR14 Landside Circular Stability Analysis R1.gsz
RH 1/2/23 Factor of Safety = 2.32 MB 1/5/24
1 Post-Seismic Waterside Global Stability Analysis / AR14 Landside Wedge Optimized Stability Analysis R1.gsz
RH 1/2/23 Factor of Safety = 2.05 MB 1/5/24
2 Post-Seismic Landside Global Stability Analysis / AR14 Landside Circular Stability Analysis R2.gsz
RH 1/5/23 Factor of Safety = 3.33 MB 1/5/24
2 Post-Seismic Landside Block Stability Analysis / AR14 Landside Wedge Optimized Stability Analysis R2.gsz
RH 1/5/23 Factor of Safety = 2.69 MB 1/5/24
2 Post-Seismic Waterside Global Stability Analysis / AR14 Landside Circular Stability Analysis R2.gsz
RH 1/5/23 Factor of Safety = 2.32 MB 1/5/24
2 Post-Seismic Waterside Global Stability Analysis / AR14 Landside Wedge Optimized Stability Analysis R2.gsz
RH 1/5/23 Factor of Safety = 2.05 MB 1/5/24

Seed-Harder Plot for Residual Strength Figure
6-9 URBAN LEVEE EVALUATIONS
50 For the ULE Program

1. Use the lower 1/3 line for
Sur selection

2. At or below (N1)60-cs = 4,
use Sur = 50 psf
50 Equivalent Clean Sand Blowcount, (N1)60-cs-Sur
Department of Water Resources
Division of Flood Management

Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

1. Cetin, K.O., et al, 2004. Standard Penetration Test-Based Probabilistic and Deterministic Assessment of Seismic Soil Liquefaction Potential. Journal of Geotechnical and Geoenvironmental Engineering, ASCE, Vol. 130, No. 12, 1313-1340. and Discussions and Closures (May, 2006) not directly comparable to the "N60(ASTM)" values shown on boring logs and stick figures (on cross-sections and profiles), which are only corrected for hammer efficiency (i.e., N60(ASTM)=N

2. URS Corporation 2012. Guidance Document for Geotechnical Analysis , Urban Levee Geotechnical Evaluations Program Rev. 12. 3. As applicable, blow counts for Standard and Modified California samples may be presented below. Please note that on boring logs and stick figures (on cross-sections and profiles),

3. Seed, R.B., et al, 2003. Recent Advances in Soil Liquefaction Engineering : A Unified and Consistent Framework . 26th Annual ASCE Los Angeles Geotechnical Spring Seminar, Keynote Presentation, H.M.S. Queens Mary, Long Beach, Ca. "N60(ASTM)" values are not shown for Standard and Modified California samples.

4. Southern California Earthquake Center, University of Southern California, Recommended Procedures for Implementation of DMG Special Publication 117 Guidelines for Analyzing and Mitigating Liquefaction in California (1999). (used only for guidance on MCAL and SCAL sampler correction) Cell color definitions:

Analysis By: Date:

Check By: Date:

53.2 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 21.9 Note: Groundwater Depth Below GS During Drilling (ft.) = 31.3 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 21.9 Note: Analyzed Groundwater Depth Below GS (ft.) = 31.3 Energy Ratio = 75 Mw = 6.8 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield
USCS ClassificationUnit Weight (pcf)Total Overburden Pressure, σv (psf)Effective Overburden Pressure During Drilling, σv' (psf)Effective Overburden Pressure During Earthquake, σv' (psf) Overburden Correction Factor, CN
Correction for Hammer Energy Efficiency, CE
Drilling MethodBorehole Diameter (inches)Correction for Borehole Diameter, CB Sampler Code(S, SW, SCAL, MCAL)N1 for Sampler
Correction Only(for SW sampler)Sampler Correction, Cs
(for SW Sampler only)
Sampler Correction for Analysis, Cs
Stick Up (Protrusion) Rod Length Above Ground (feet)Rod Length (m)Rod Length Correction Factor, CR N60
N1,60
Fines Content (%)Fines Content for Analysis (%)Correction Factor for Fine Content, C fines N1,60,CS
Cyclic Resistance Ratio, CRR
τmax (psf)
Cyclic Stress Ratio, CSRFactor of Safety, FSL
FSL < 1.25 (Yes/No)
Below Analyzed Ground water Level (Yes/No)N1,60,CS<23 (Yes/No) USCS ClassificationLiquid Limit, LL (%)(Enter number only)Plasticity Index, PI (%)(Enter number only)Water Content, w (%)(Enter number only)NP from Atterberg Limits test (Yes/Blank)Is PI<10, LL<35, w>0.8LL?Liquefaction Susceptibility Based on Soil Type (Yes/No)Final Assessment(Yes/No)(Based on Columns AE, AF,AG, and AN)Factor of Safety, FSL Comment(Likely Liquefiablefor FSL≤1;
Less Likely Liquefiable for 1.0<FSL<1.25;
Non-Liquefiable for FSL≥1.25)
1 0.5 14 SC 125 63 63 63 1.6 1.3 H 6 1.05 S 22 1.27 1.00 7 2.0 0.75 14 22 12 1.1 24 0.636 11.4 0.119 3.00 No No No SC - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 2.5 13 SM 125 313 313 313 1.6 1.3 H 6 1.05 S 21 1.25 1.00 7 2.6 0.75 13 20 32 32 1.2 25 0.438 56.5 0.118 3.00 No No No SM Yes Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 4.5 7 SM 115 543 543 543 1.6 1.3 H 6 1.05 S 11 1.12 1.00 7 3.2 0.75 7 11 12 1.1 12 0.147 100.5 0.120 1.22 Yes No Yes SM - Yes No 1.22 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 6.5 29 SM 125 793 793 793 1.6 1.3 H 6 1.05 S 46 1.30 1.00 7 3.8 0.76 29 46 12 1.1 49 2.098 143.4 0.118 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 8.5 19 SM 125 1043 1043 1043 1.4 1.3 H 6 1.05 S 26 1.30 1.00 7 4.4 0.81 20 28 12 1.1 30 0.459 185.3 0.116 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 10.5 22 SC 125 1293 1293 1293 1.2 1.3 H 6 1.05 S 27 1.30 1.00 7 5.0 0.84 24 30 12 1.1 32 0.520 226.0 0.114 3.00 No No No SC - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 12.5 10 SM 125 1543 1543 1543 1.1 1.3 H 6 1.05 S 11 1.14 1.00 7 5.6 0.87 11 13 12 1.1 14 0.128 253.4 0.107 1.20 Yes No Yes SM - Yes No 1.20 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 8 14.5 5 SM 115 1773 1773 1773 1.1 1.3 H 6 1.05 S 5 1.10 1.00 7 6.2 0.89 6 6 12 1.1 7 0.072 280.7 0.103 0.70 Yes No Yes SM - Yes No 0.70 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 9 16.5 5 SM 115 2003 2003 2003 1.0 1.3 H 6 1.05 S 5 1.10 1.00 7 6.9 0.91 6 6 41 35 1.4 9 0.078 302.7 0.098 0.79 Yes No Yes SM Yes Yes Yes No 0.79 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 10 18.5 8 SM 115 2233 2233 2233 0.9 1.3 H 6 1.05 S 8 1.10 1.00 7 7.5 0.93 10 9 12 1.1 10 0.086 322.9 0.094 0.91 Yes No Yes SM - Yes No 0.91 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 11 20.5 8 SM 115 2463 2463 2463 0.9 1.3 H 6 1.05 S 7 1.10 1.00 7 8.1 0.94 10 9 12 1.1 10 0.081 341.8 0.090 0.90 Yes No Yes SM - Yes No 0.90 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 12 23.5 10 SM 125 2838 2838 2838 0.8 1.3 H 6 1.05 S 8 1.12 1.00 7 9.0 0.96 13 11 12 1.1 12 0.089 364.6 0.084 1.07 Yes No Yes SM - Yes No 1.07 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 13 28.5 10 SM 125 3463 3463 3463 0.8 1.3 H 6 1.05 S 8 1.11 1.00 7 10.5 0.97 13 10 12 1.1 11 0.079 402.6 0.076 1.05 Yes No Yes SM - Yes No 1.05 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 14 33.5 10 SP-SM 125 4088 3952 3952 0.7 1.3 H 6 1.05 S 7 1.10 1.00 7 12.0 0.98 13 9 8 1.1 10 0.071 437.1 0.072 0.99 Yes Yes Yes SP-SM - Yes Yes 0.99 Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25. 15 38.5 10 SP-SM 125 4713 4265 4265 0.7 1.3 H 6 1.05 S 7 1.10 1.00 7 13.6 0.99 13 9 10 10 1.1 10 0.069 470.0 0.072 0.96 Yes Yes Yes SP-SM Yes Yes Yes Yes 0.96 Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25. 16 58.5 36 SM 130 7313 5617 5617 0.6 1.3 H 6 1.05 S 21 1.30 1.00 7 19.7 1.00 47 28 13 13 1.1 30 0.298 587.3 0.068 3.00 No Yes No SM Yes Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. Sample is below liquefaction assessment zone (>50' below LS toe).

DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

Data Input By Analyst
American River (North Bank) Results of Analysis
DWR Urban Levee Evaluations Program
K. Atyam
E. Julian
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3307+50
PROJECT NUMBER: 17326660
NA, used Avg. Winter WSE
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest
Boring ID: Likely Liquefiable
Conclusions and Comments
4/24/2014
Drilled April 1997
2F-97-06
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
5/1/2014
https://kleinfelder1.sharepoint.com/sites/SAFCASacramentoAreaFloodControlAgency/Shared Documents/ULDC-FEMA/02b Existing Reports/ULE Liquefaction XLS - Copy to Analyze with Mag 6.8/(NASL) AMRVGERCF1TLiqSpd_NB/Segment 14/2F-97-06_V1.3SPT Based Liquefaction PROJECT: DWR Urban Levee Evaluations Prepared By: Date: 5/11/2012 SUBJECT: Marysville Parameter Selection for Seepage and Slope Stability Analysis Checked By: Date: 5/11/2012 CONTRACT NO. 4600008101
REACH: A
STATION: 1034+72
EXPLORATION(S): 2F-99-05 (crest), 2F-96-24 (crest), 2F-00-5W (LS Toe), 2F-00-01 (LS Toe); WCSBAR_002M* (Crest, Sta. 1044+59) *nearby boring considered for properties, not shown in cross section Vane
Shear
Perm.

Test SPT
Depth to Top of Layer (feet)
Depth to Bottom of Layer (feet)
Elevation of Top of Layer (NAVD 88, feet)
Elevation of Bottom of Layer (NAVD 88,
feet)
Layer Thickness (feet) N *[N60 (ASTM) not available] N1 atm 1, 2
Vane Shear [su(psf)]
Pocket Penetrometer (tsf)
Torvane (ksf)
Water Content (%)
Total Unit Weight (pcf)
Dry Unit Weight (pcf)
LL (%)
PI (%)
LI
% Passing #200 Sieve
Permeability (kv) cm/sec
Maximum Past Pressure,
V
'
p (ksf)
Effective Overburden Pressure,
ʍ
'vo (ksf)
OCR
Test Type (Triaxial - TX, Direct Simple
Shear - DSS, Drained Direct Shear - DDS)
C' (psf) I' (degrees)
C'/
V'vmc
C' (psf) I' (degrees)
C (psf) I (degrees) I' from N (deg)
3 I' from CPT (deg)
4 Max past pressure from CPT (ksf)5
OCR from CPT
5 Undrained shear strength
from CPT, s
u (ksf)
5 Max past pressure from Vane Shear (ksf)
OCR from Vane Shear
Soil Group Categorization
(see Section 5)
C' (psf)
(see Section 5)
kv (cm/sec)
(see Section 4)
Kozeny- Carman-(kv) cm/sec
(see Section 4)
OCR
Maximum past pressure (ksf)
Undrained shear strength, s
u (ksf)
s
u
/
V
'v0
Drained Cohesion, C' (psf)
Drained Friction Angle,
I' (deg)
Undrained Cohesion, C (psf)
Undrained Friction Angle, I(deg)
Total unit weight (pcf)
Horizontal (kh) cm/sec
kv/kh
Vertical (kv) cm/sec
Horizontal (kh) ft/day
Vertical (kv) ft/day
(1) SP Embankment 0 10 42 32 10 4 (2-8) 7-- NP -- 2, 5 30 5 0 1.E-02 0 32 130 1.E-02 1 1.E-02 34 34 (2) SM Foundation 10 18 32 24 8 7 (3-11) 9-- NP -- 17 32 5 0 1.E-04 0 32 130 4.E-04 0.25 1.E-04 1.11 0.28 (3) CL Foundation 18 22 24 19 4 6 (4-7) 5 1.75* 17* 28* 13* 0.154 1 1.E-06 5.0 8.5 2.1 0.80 100 30 960 7 120 4.E-06 0.25 1.E-06 0.0113 0.0028 (4) SP-SM Foundation 22 66-78 19 -25 to -37 44-56 10 (7-66) 6-- NP -- 7, 6, 8
5, 10
16 86
29 5 0 2.E-03 0 32 130 1.E-03 0.25 3.E-04 2.8 0.71
(5) GP-GM Foundation 66-78 103 -25 to -37 -62 25-36 7, 15, 84 See Com- ments 5 0 3.E-03 0 35 130 3.E-03 1 3.E-03 8.5 8.5 (6) Existing Slurry Wall Existing Crest Wall 0 79 41 -37.5 79(2' wide) 0.7 100 28 180 3 100 1.E-06 1 1.E-06 0.003 0.003

41.6 (NAVD 88, feet) Notes: - Cells shaded gray have been intentionally left blank. Sources: Soil Group Categorization Notes:

29.0 (NAVD 88, feet) - Ranges and outliers shown where appropriate. 1Youd, T.L. et al. 2001, “Liquefaction Resistance of Soils: Summary Report from the 1996 NCEER and 1998 NCEER/NSF Workshops on Evaluation 1. Non-free-draining Group 1

12.6 (feet) (VWLPDWHGYDOXHVRI2&5YDOXHVVKRXOGEHHVWLPDWHGEDVHGRQWKHIROORZLQJSULRULW\RIGDWDDVDYDLODEOH of Liquefaction Resistance of Soils.” Journal of Geotechnical and Geoenvironmental Engineering 2. Non-free-draining Group 2

7.0 (NAVD 88, feet) 1. Consolidation test results, 2. Field vane test results and 3. CPT test results. 2Burmister, D. M., 1948, The importance and practical use of relative density in soil mechanics: Proceedings ASTM 3. Non-free-draining Group 3

37.3 (NAVD 88, feet) - SPT data should not be used to estimate OCR and effective strength parameters for cohesive soils. 3Federal Highway Administration. 2002, "Evaluation of soil and rock properties." Geotechnical Engineering Circular No. 5, FHWA-IF-02-034 4. Non-free-draining Group 4 4Mayne, P. 2007. Cone Penetration Testing State-of-Practice. NCHRP. Project 20-05 5. Free-draining WSE during exploration based on 2F-96-24 and 2F-00-5W 5Lunne, T. et al. 1997. Cone Penetration Testing in Geotechnical Practice - Embankment hydraulic conductivities determined according to Guidance Document. - Loose sand layer. Use 32 degrees based on SPT and Guidance Document Section 5.8.2.

Levee HeightWSE During Exploration
- Foundation hydraulic conductivities were selected per the Guidance Document, assuming natural foundation based on segment history.-Site specific strength test data limited to SPT. OCR based on LI. Strength values estimated per Guidance Document. - Foundation hydraulic conductivities determined according to Guidance Document. - Loose sand layer. Use 32 degrees based on SPT and Guidance Document Section 5.8.2.Deep Gravel layer.In-Situ constant head permeability tests performed on screened gravel unit of 4 piezometers within Reach A (2F-00-5W through 8W) found Kh to range from 2.3E-03 to 3.7E-03 cm/sec. Hydraulic conductivity values selected based on field test.Existing Soil-Cement-Bentonite wall, assumed properties Levee Crest ElevationLandside Toe Elevation
- Foundation hydraulic conductivities determined according to Guidance Document. - Loose sand layer. Use 32 degrees based on SPT and Guidance Document Section 5.8.2.

COMMENTS
Material Description
(Layer Number)
Zone
Soil Layer Details
Field Test Data Laboratory Test Data Strength and Permeability Related Interpretation SPT Strength Index Index Tests Consolidation Tests Drained Shear Test ICU Selected Strength Parameters
for Slope Stability Analysis
Selected Hydraulic Conductivity
Values for Seepage Analysis
200-year Analysis WSE
Table B1-A-1 Material Properties for Seepage and Stability Analysis Study Area: American River Graham Bradner
CPT Vane Shear
Values Considered In
Selection
of Strength Parameters
Guidance Document
E. Singleton/R. Jaeger
24001006.001A/SAC24R172217 Page E-2 September 10, 2024
© 2024 Kleinfelder

APPENDIX F

ORIGINAL URS LIQUEFACTION SPREADSHEET ANALYSES
_____________________________________________________________________ Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

49.0 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 12.0 Note: Groundwater Depth Below GS During Drilling (ft.) = 37.0 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 17.3 Note: Analyzed Groundwater Depth Below GS (ft.) = 31.7 Energy Ratio = 75 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 1.5 3 CL 115 173 173 173 1.6 1.3 H 6 1.05 S 5 1.10 1.00 7 2.3 0.75 3 5 35 1.5 7 0.153 34.1 0.129 1.19 Yes No Yes CL - No No 1.19 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 4.5 9 CL 125 548 548 548 1.6 1.3 H 6 1.05 S 14 1.16 1.00 7 3.2 0.75 9 14 35 1.3 18 0.249 100.5 0.119 2.09 No No Yes CL - No No 2.09 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 7.5 13 CL 125 923 923 923 1.5 1.3 H 6 1.05 S 19 1.24 1.00 7 4.1 0.79 13 20 35 1.2 24 0.347 164.5 0.116 2.99 No No No CL - No No 2.99 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 10.5 6 CL 120 1283 1283 1283 1.2 1.3 H 6 1.05 S 7 1.10 1.00 7 5.0 0.84 7 8 69 35 1.4 11 0.118 226.0 0.115 1.03 Yes No Yes CL 31 10 No No No 1.03 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 13.5 9 CL 125 1658 1658 1658 1.1 1.3 H 6 1.05 S 10 1.13 1.00 7 5.9 0.88 10 11 35 1.3 15 0.145 267.0 0.105 1.38 No No Yes CL - No No 1.38 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 16.5 9 CL 125 2033 2033 2033 1.0 1.3 H 6 1.05 S 9 1.12 1.00 7 6.9 0.91 11 11 35 1.3 14 0.128 302.7 0.097 1.32 No No Yes CL - No No 1.32 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 19.5 4 CL 120 2393 2393 2393 0.9 1.3 H 6 1.05 S 4 1.10 1.00 7 7.8 0.93 5 4 85 35 1.5 7 0.072 333.0 0.090 0.80 Yes No Yes CL 38 17 No No No 0.80 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 8 22.5 10 CL 125 2768 2768 2768 0.9 1.3 H 6 1.05 S 9 1.12 1.00 7 8.7 0.95 12 11 35 1.3 14 0.117 357.0 0.084 1.40 No No Yes CL - No No 1.40 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 9 25.5 61 SM 130 3158 3158 3158 0.8 1.3 H 6 1.05 S 49 1.30 1.00 7 9.6 0.96 77 61 12 1.1 65 5.213 379.8 0.078 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 10 28.5 28 ML 125 3533 3533 3533 0.8 1.3 H 6 1.05 S 21 1.30 1.00 7 10.5 0.97 36 27 51 35 1.2 32 0.440 402.6 0.074 3.00 No No No ML 35 10 19 No No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 11 31.5 100 SM 130 3923 3923 3923 0.7 1.3 H 6 1.05 S 71 1.30 1.00 7 11.4 0.98 129 92 12 1.1 97 53.779 423.9 0.070 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 12 34.5 51 SP 130 4313 4313 4140 0.7 1.3 H 6 1.05 S 35 1.30 1.00 7 12.3 0.98 66 45 5 1.0 46 1.172 443.6 0.070 3.00 No Yes No SP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 13 37.5 100 MH 125 4688 4656 4327 0.7 1.3 H 6 1.05 S 66 1.30 1.00 7 13.3 0.99 130 85 35 1.2 99 60.317 463.4 0.070 3.00 No Yes No MH - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 14 40.5 34 SP 130 5078 4859 4530 0.6 1.3 H 6 1.05 S 22 1.30 1.00 7 14.2 0.99 44 28 5 1.0 29 0.323 483.0 0.069 3.00 No Yes No SP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 15 43.5 100 ML 125 5453 5047 4718 0.6 1.3 H 6 1.05 S 63 1.30 1.00 7 15.1 0.99 130 82 69 35 1.2 95 45.801 501.6 0.069 3.00 No Yes No ML 38 5 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 16 46.5 40 MH 125 5828 5235 4906 0.6 1.3 H 6 1.05 S 25 1.30 1.00 7 16.0 1.00 52 32 35 1.2 39 0.639 519.7 0.069 3.00 No Yes No MH - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 17 49.5 20 SP 125 6203 5423 5094 0.6 1.3 H 6 1.05 S 12 1.18 1.00 7 16.9 1.00 26 16 5 1.0 16 0.120 537.3 0.069 1.75 No Yes Yes SP - Yes No 1.75 Non-Liquefiable Non-Liquefiable. FSL>1.25. 18 52.5 48 MH 125 6578 5610 5281 0.6 1.3 H 6 1.05 S 29 1.30 1.00 7 17.8 1.00 63 38 35 1.2 45 0.978 554.4 0.068 3.00 No Yes No MH - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 19 55.5 22 MH 125 6953 5798 5469 0.6 1.3 H 6 1.05 S 13 1.19 1.00 7 18.7 1.00 29 17 35 1.2 21 0.166 571.1 0.068 2.45 No Yes Yes MH - No No 2.45 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 20 75.5 31 SM 130 9553 7150 6821 0.5 1.3 Air 4 1.00 S 16 1.24 1.00 7 24.8 1.00 39 20 48 35 1.2 25 0.212 671.6 0.064 3.00 No Yes No SM 26 3 19 Judgment Needed Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. Sample is below liquefaction assessment zone (>50' below LS toe). Borehole diameter not noted on log. Assumed 4" diameter (air-rotary).

Conclusions and Comments
2/26/2014
Drilled July 2000
2F-00-105
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
4/8/2014
PROJECT NUMBER: 17326660
From 2F-00-105
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest
Boring ID: Likely Liquefiable
American River (North Bank)
DWR Urban Levee Evaluations Program
H. Hayati
T. Kanax
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3101+00
DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

Data Input By Analyst
Results of Analysis
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/AMRVGERCF1TLiqSpd_NB/2F-00-105_V1.3SPT Based Liquefaction 9/10/2024
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

67.5 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 34.5 Note: Groundwater Depth Below GS During Drilling (ft.) = 33.0 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.13 Analyzed Groundwater Elevation (ft.)= 36.3 Note: Analyzed Groundwater Depth Below GS (ft.) = 31.3 Energy Ratio = 80 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 0.5 16 SM 125 63 63 63 1.6 1.3 H 6 1.05 S 26 1.30 1.00 7 2.0 0.75 17 27 12 1.1 29 1.028 10.8 0.112 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 2 17 SM 125 250 250 250 1.6 1.3 H 6 1.05 S 27 1.30 1.00 7 2.4 0.75 18 29 12 1.1 31 0.798 42.8 0.111 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 3.5 11 SM 125 438 438 438 1.6 1.3 H 6 1.05 S 18 1.22 1.00 7 2.9 0.75 12 18 12 1.1 20 0.309 74.2 0.110 2.80 No No Yes SM - Yes No 2.80 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 5 13 SM 125 625 625 625 1.6 1.3 H 6 1.05 S 21 1.26 1.00 7 3.4 0.75 14 22 12 1.1 23 0.365 104.9 0.109 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 6.5 16 SM 125 813 813 813 1.6 1.3 H 6 1.05 S 25 1.30 1.00 7 3.8 0.76 17 27 12 1.1 29 0.503 135.1 0.108 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 8 20 SM 125 1000 1000 1000 1.4 1.3 H 6 1.05 S 28 1.30 1.00 7 4.3 0.80 22 32 12 1.1 34 0.686 164.7 0.107 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 9.5 12 GM 130 1195 1195 1195 1.3 1.3 H 6 1.05 S 16 1.21 1.00 7 4.7 0.82 14 18 12 1.1 19 0.224 193.6 0.105 2.13 No No Yes GM - Yes No 2.13 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 8 11 4 SM 115 1368 1368 1368 1.2 1.3 H 6 1.05 S 5 1.10 1.00 7 5.2 0.85 5 6 12 1.2 7 0.083 219.2 0.104 0.80 Yes No Yes SM - Yes No 0.80 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 9 12.5 4 SM 115 1540 1540 1540 1.1 1.3 H 6 1.05 S 5 1.10 1.00 7 5.6 0.87 5 6 12 1.2 6 0.079 238.7 0.101 0.78 Yes No Yes SM - Yes No 0.78 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 10 14 4 SP-SM 115 1713 1713 1713 1.1 1.3 H 6 1.05 S 4 1.10 1.00 7 6.1 0.89 5 5 8 1.1 6 0.074 258.2 0.098 0.75 Yes No Yes SP-SM - Yes No 0.75 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 11 15.5 5 SM 115 1885 1885 1885 1.0 1.3 H 6 1.05 S 5 1.10 1.00 7 6.6 0.90 6 7 12 1.1 7 0.080 276.0 0.095 0.84 Yes No Yes SM - Yes No 0.84 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 12 30.5 10 SM 125 3760 3760 3760 0.7 1.3 H 6 1.05 S 7 1.11 1.00 7 11.1 0.98 14 10 12 1.1 11 0.087 391.1 0.068 1.29 No No Yes SM - Yes No 1.29 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 13 35.5 21 CL 125 4385 4229 4120 0.7 1.3 H 6 1.05 S 14 1.23 1.00 7 12.6 0.99 29 20 35 1.2 24 0.233 422.1 0.067 3.00 No Yes No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 14 40.5 56 SM 130 5035 4567 4458 0.7 1.3 H 6 1.05 S 37 1.30 1.00 7 14.2 0.99 78 51 12 1.1 55 2.170 452.8 0.066 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 15 45.5 19 SP-SM 125 5660 4880 4771 0.6 1.3 H 6 1.05 S 12 1.19 1.00 7 15.7 0.99 26 17 8 1.1 18 0.136 481.3 0.066 2.07 No Yes Yes SP-SM - Yes No 2.07 Non-Liquefiable Non-Liquefiable. FSL>1.25. Bottom of boring.

DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

Data Input By Analyst
American River (North Bank) Results of Analysis
DWR Urban Levee Evaluations Program
K. Atyam
E. Julian
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3535+92
PROJECT NUMBER: 17326660
From 2F-00-133
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest
Boring ID: Likely Liquefiable
Conclusions and Comments
4/24/2014
Drilled June 2000
2F-00-133
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
5/1/2014
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/AMRVGERCF1TLiqSpd_NB/2F-00-133_V1.3SPT Based Liquefaction 9/10/2024
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

46.7 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 6.7 Note: Groundwater Depth Below GS During Drilling (ft.) = 40.0 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 17.9 Note: Analyzed Groundwater Depth Below GS (ft.) = 28.9 Energy Ratio = 75 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 8.5 10 SM 125 1063 1063 1063 1.4 1.3 NA 6 1.05 S 14 1.16 1.00 7 4.4 0.81 11 15 12 1.1 16 0.177 185.3 0.113 1.56 No No Yes SM - Yes No 1.56 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

Drilling method and borehole diameter for Samples 1-15 not noted on log. Assumed 6" diameter.
2 11.5 12 SM 125 1438 1438 1438 1.2 1.3 NA 6 1.05 S 14 1.18 1.00 7 5.3 0.85 13 16 12 1.1 17 0.181 239.7 0.108 1.67 No No Yes SM - Yes No 1.67 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 14.5 9 ML 125 1813 1813 1813 1.1 1.3 NA 6 1.05 S 9 1.12 1.00 7 6.2 0.89 11 11 35 1.3 14 0.137 280.7 0.101 1.36 No No Yes ML - Yes No 1.36 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 17.5 16 ML 125 2188 2188 2188 1.0 1.3 NA 6 1.05 S 15 1.21 1.00 7 7.2 0.92 19 18 35 1.2 23 0.244 312.8 0.093 2.63 No No Yes ML - Yes No 2.63 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 20.5 7 ML 125 2563 2563 2563 0.9 1.3 NA 6 1.05 S 6 1.10 1.00 7 8.1 0.94 9 8 35 1.4 10 0.093 341.8 0.087 1.07 Yes No Yes ML - Yes No 1.07 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 23.5 13 ML 125 2938 2938 2938 0.8 1.3 NA 6 1.05 S 11 1.15 1.00 7 9.0 0.96 16 13 35 1.3 17 0.147 364.6 0.081 1.82 No No Yes ML - Yes No 1.82 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 26.5 10 SM 125 3313 3313 3313 0.8 1.3 NA 6 1.05 S 8 1.11 1.00 7 9.9 0.97 13 10 12 1.1 11 0.089 387.4 0.076 1.17 Yes No Yes SM - Yes No 1.17 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 8 29.5 27 SM 130 3703 3703 3662 0.7 1.3 NA 6 1.05 S 20 1.30 1.00 7 10.8 0.97 35 25 12 1.1 27 0.295 410.2 0.073 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 9 32.5 11 SM 125 4078 4078 3850 0.7 1.3 NA 6 1.05 S 8 1.11 1.00 7 11.7 0.98 14 10 12 1.1 11 0.086 430.5 0.073 1.18 Yes Yes Yes SM - Yes Yes 1.18 Less Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25. 10 36 10 SM 125 4515 4515 4069 0.7 1.3 NA 6 1.05 S 7 1.10 1.00 7 12.8 0.99 13 9 12 1.1 10 0.077 453.5 0.072 1.06 Yes Yes Yes SM - Yes Yes 1.06 Less Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25. 11 38.5 12 SM 125 4828 4828 4225 0.6 1.3 NA 6 1.05 S 8 1.11 1.00 7 13.6 0.99 16 10 12 1.1 11 0.085 470.0 0.072 1.18 Yes Yes Yes SM - Yes Yes 1.18 Less Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25. 12 41.5 10 SM 125 5203 5109 4413 0.6 1.3 NA 6 1.05 S 6 1.10 1.00 7 14.5 0.99 13 8 12 1.1 9 0.072 489.3 0.072 1.00 Yes Yes Yes SM - Yes Yes 1.00 Likely Liquefiable Likely Liquefiable. FSL=1.0. 13 44.5 9 SP-SM 125 5578 5297 4601 0.6 1.3 NA 6 1.05 S 6 1.10 1.00 7 15.4 0.99 12 7 8 1.1 8 0.065 507.6 0.072 0.91 Yes Yes Yes SP-SM - Yes Yes 0.91 Likely Liquefiable Likely Liquefiable. FSL<1.0. 14 47.5 18 SP-SM 125 5953 5485 4789 0.6 1.3 NA 6 1.05 S 11 1.16 1.00 7 16.3 1.00 24 14 8 1.1 15 0.110 525.6 0.071 1.54 No Yes Yes SP-SM - Yes No 1.54 Non-Liquefiable Non-Liquefiable. FSL>1.25. 15 50.5 23 SP-SM 130 6343 5687 4992 0.6 1.3 NA 6 1.05 S 14 1.20 1.00 7 17.2 1.00 30 18 8 1.1 19 0.144 543.0 0.071 2.04 No Yes Yes SP-SM - Yes No 2.04 Non-Liquefiable Non-Liquefiable. FSL>1.25. 16 64.5 30 ML 125 8093 6564 5868 0.6 1.3 M 4 1.00 S 17 1.24 1.00 7 21.5 1.00 37 21 35 1.2 25 0.225 617.4 0.068 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. Borehole diameter not noted on log.

Assumed 4" diameter (mud-rotary). Below liquefaction
assessment zone (>50' below LS toe).

Conclusions and Comments
2/26/2014
Drilled Jan. 2003
2F-03-19
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
4/8/2014
PROJECT NUMBER: 17326660
From 2F-03-19
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest
Boring ID: Likely Liquefiable
American River (North Bank)
DWR Urban Levee Evaluations Program
H. Hayati
T. Kanax
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3176+96
DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

40.1 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 15.2 Note: Groundwater Depth Below GS During Drilling (ft.) = 24.9 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 15.2 Note: Analyzed Groundwater Depth Below GS (ft.) = 24.9 Energy Ratio = 78 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 2.5 15 GM 130 325 325 325 1.6 1.3 H 6 1.05 S 24 1.30 1.00 7 2.6 0.75 15 25 12 1.1 26 0.542 56.5 0.113 3.00 No No No GM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

Borehole diameter not noted on log. Assumed 6" for HSA and 4" for mud-rotary.
2 5.5 14 GM 130 715 715 715 1.6 1.3 H 6 1.05 S 22 1.28 1.00 7 3.5 0.75 14 23 12 1.1 25 0.383 122.1 0.111 3.00 No No No GM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 8 49 GW 130 1040 1040 1040 1.4 1.3 H 6 1.05 SCAL 68 1.30 0.65 7 4.3 0.80 35 48 4 0 1.0 48 1.993 174.9 0.109 3.00 No No No GW - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 10.5 5 ML 99 1286 1286 1286 1.2 1.3 H 6 1.05 S 6 1.10 1.00 7 5.0 0.84 6 7 88 35 1.4 10 0.108 226.0 0.114 0.95 Yes No Yes ML 40 14 35 No No No 0.95 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 15.5 8 SM 115 1861 1861 1861 1.0 1.3 H 6 1.05 SCAL 8 1.11 0.65 7 6.6 0.90 6 7 12 1.1 8 0.081 292.6 0.102 0.79 Yes No Yes SM - Yes No 0.79 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 8 18 3 CL-ML 115 2149 2149 2149 1.0 1.3 H 6 1.05 S 3 1.10 1.00 7 7.3 0.92 4 4 35 1.6 6 0.069 317.8 0.096 0.72 Yes No Yes CL-ML - Yes No 0.72 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 10 20.5 11 SP 115 2436 2436 2436 0.9 1.3 H 6 1.05 SCAL 10 1.14 0.65 7 8.1 0.94 9 8 5 1.1 9 0.083 341.8 0.091 0.91 Yes No Yes SP - Yes No 0.91 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 13 25.5 43 CH 125 3061 3022 3022 0.8 1.3 H 6 1.05 S 35 1.30 1.00 7 9.6 0.96 57 46 35 1.2 54 2.357 379.8 0.082 3.00 No Yes No CH 52 33 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 15 28 120 ML 125 3374 3179 3179 0.8 1.3 H 6 1.05 SCAL 95 1.30 0.65 7 10.4 0.97 103 82 76 35 1.2 95 50.723 398.8 0.082 3.00 No Yes No ML 36 10 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 16 30.5 28 SP-SM 110 3648 3297 3297 0.8 1.3 H 6 1.05 S 22 1.30 1.00 7 11.1 0.98 37 29 8 1.0 30 0.387 417.3 0.082 3.00 No Yes No SP-SM 22 - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 19 33 86 CL 125 3961 3454 3454 0.8 1.3 H 6 1.05 SCAL 65 1.30 0.65 7 11.9 0.98 75 57 35 1.2 67 5.847 433.8 0.082 3.00 No Yes No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 20 35.5 21 SM 125 4273 3610 3610 0.7 1.3 H 6 1.05 S 16 1.24 1.00 7 12.6 0.99 28 21 37 35 1.2 26 0.265 450.2 0.081 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 21 38 200 SM 130 4598 3779 3779 0.7 1.3 H 6 1.05 SCAL 145 1.30 0.65 7 13.4 0.99 176 128 12 1.1 134 915.236 466.7 0.080 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 22 40.5 35 SC 130 4923 3948 3948 0.7 1.3 H 6 1.05 S 25 1.30 1.00 7 14.2 0.99 47 34 12 1.1 36 0.556 483.0 0.080 3.00 No Yes No SC - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. No fines content data noted on log. 23 43 72 SC 130 5248 4117 4117 0.7 1.3 M 4 1.00 SCAL 50 1.30 0.65 7 14.9 0.99 60 42 12 1.1 45 1.066 498.5 0.079 3.00 No Yes No SC - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. No fines content data noted on log. 24 45.5 21 SC 125 5561 4274 4274 0.7 1.3 M 4 1.00 S 14 1.21 1.00 7 15.7 0.99 27 19 12 1.1 20 0.165 513.7 0.078 2.11 No Yes Yes SC - Yes No 2.11 Non-Liquefiable Non-Liquefiable. FSL≥1.25. No fines content data noted on log. 26 50.5 44 SM 130 6211 4612 4612 0.7 1.3 M 4 1.00 SCAL 29 1.30 0.65 7 17.2 1.00 37 24 38 35 1.2 30 0.331 543.0 0.077 3.00 No Yes No SM 24 4 Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 28 53 24 SM 130 6536 4781 4781 0.6 1.3 M 4 1.00 S 16 1.23 1.00 7 18.0 1.00 31 20 12 1.1 22 0.181 557.2 0.076 2.39 No Yes Yes SM - Yes No 2.39 Non-Liquefiable Non-Liquefiable. FSL>1.25. 29 55.5 64 SC 130 6861 4950 4950 0.6 1.3 M 4 1.00 SCAL 41 1.30 0.65 7 18.7 1.00 54 34 12 1.1 37 0.548 571.1 0.075 3.00 No Yes No SC - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 31 58 46 CL 125 7173 5106 5106 0.6 1.3 M 4 1.00 S 29 1.30 1.00 7 19.5 1.00 60 37 35 1.2 44 0.975 584.7 0.074 3.00 No Yes No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 33 60.5 96 SM 130 7498 5275 5275 0.6 1.3 M 4 1.00 SCAL 59 1.30 0.65 7 20.3 1.00 81 50 12 1.1 53 1.833 597.7 0.074 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. Sample is below liquefaction assessment zone (>50' below LS toe).

DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

Data Input By Analyst
American River (North Bank) Results of Analysis
DWR Urban Levee Evaluations Program
H. Hayati
T. Kanax
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3013+21
PROJECT NUMBER: 17326660
N/A, used Avg. Winter WSE
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest (Boring is on levee access road about 37' from levee centerline and about 3' below levee crest)
Boring ID: Likely Liquefiable
Conclusions and Comments
2/26/2014
Drilled Dec. 2008
2F-08-02
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
4/8/2014
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/AMRVGERCF1TLiqSpd_NB/2F-08-02_V1.3SPT Based Liquefaction 9/10/2024
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

44.3 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 2.0 Note: Groundwater Depth Below GS During Drilling (ft.) = 42.3 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 15.8 Note: Analyzed Groundwater Depth Below GS (ft.) = 28.6 Energy Ratio = 78 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 2.5 9 ML 125 313 313 313 1.6 1.3 H 6 1.05 S 14 1.17 1.00 7 2.6 0.75 9 15 35 1.3 19 0.305 56.5 0.118 2.59 No No Yes ML - Yes No 2.59 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

Borehole diameter not noted on log. Assumed 6" for HSA and 4" for mud-rotary.
2 5.5 23 ML 114 655 655 655 1.6 1.3 H 6 1.05 SCAL 37 1.30 0.65 7 3.5 0.75 15 24 85 35 1.2 30 0.573 122.1 0.121 3.00 No No No ML 16 Yes Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 8 5 CL-ML 120 955 955 955 1.4 1.3 H 6 1.05 S 7 1.10 1.00 7 4.3 0.80 5 8 35 1.4 11 0.124 174.9 0.119 1.04 Yes No Yes CL-ML - Yes No 1.04 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 13 9 ML 120 1555 1555 1555 1.1 1.3 H 6 1.05 SCAL 10 1.13 0.65 7 5.8 0.87 7 8 56 35 1.4 11 0.109 260.2 0.109 1.00 Yes No Yes ML Yes Yes Yes No 1.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 15.5 9 CL-ML 125 1867 1867 1867 1.0 1.3 H 6 1.05 S 9 1.13 1.00 7 6.6 0.90 11 11 35 1.3 15 0.140 292.6 0.102 1.37 No No Yes CL-ML - Yes No 1.37 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 8 20.5 11 ML 125 2492 2492 2492 0.9 1.3 H 6 1.05 SCAL 10 1.14 0.65 7 8.1 0.94 9 8 35 1.4 11 0.098 341.8 0.089 1.10 Yes No Yes ML - Yes No 1.10 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 9 23 7 ML 125 2805 2805 2805 0.8 1.3 H 6 1.05 S 6 1.10 1.00 7 8.8 0.95 9 8 86 35 1.4 11 0.091 360.8 0.084 1.09 Yes No Yes ML Yes Yes Yes No 1.09 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 10 25.5 8 ML 105 3068 3068 3068 0.8 1.3 H 6 1.05 SCAL 6 1.10 0.65 7 9.6 0.96 7 6 35 1.5 8 0.074 379.8 0.080 0.92 Yes No Yes ML 26 - Yes No 0.92 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 11 28 8 ML 125 3381 3381 3381 0.8 1.3 H 6 1.05 S 6 1.10 1.00 7 10.4 0.97 11 8 35 1.4 11 0.090 398.8 0.077 1.17 Yes No Yes ML - Yes No 1.17 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 13 33 11 ML 109 3927 3927 3649 0.7 1.3 H 6 1.05 SCAL 8 1.12 0.65 7 11.9 0.98 10 7 77 35 1.4 10 0.078 433.8 0.077 1.01 Yes Yes Yes ML 22 Yes Yes Yes Yes 1.01 Less Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25. Lab data is from adjacent Shelby sample and indicates non-plastic.
14 35.5 7 ML 125 4239 4239 3805 0.7 1.3 H 6 1.05 S 5 1.10 1.00 7 12.6 0.99 9 6 35 1.4 9 0.075 450.2 0.077 0.98 Yes Yes Yes ML - Yes Yes 0.98 Likely Liquefiable Likely Liquefiable. FSL<1.0. Lab testing on adjacent sample indicates non-plastic.
15 37.5 11 SM 115 4469 4469 3911 0.7 1.3 H 6 1.05 SCAL 7 1.11 0.65 7 13.3 0.99 10 6 48 35 1.4 9 0.074 463.4 0.077 0.96 Yes Yes Yes SM - Yes Yes 0.96 Likely Liquefiable Likely Liquefiable. FSL<1.0. 17 40.5 4 CL 120 4829 4829 4083 0.6 1.3 H 6 1.05 S 3 1.10 1.00 7 14.2 0.99 5 3 35 1.6 6 0.057 483.0 0.077 0.74 Yes Yes Yes CL - No No 0.74 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction.

NA 43.5 8 CL 120 5189 5114 4256 0.6 1.3 M 4 1.00 SCAL 5 1.10 0.65 7 15.1 0.99 7 4 35 1.6 7 0.060 501.6 0.077 0.78 Yes Yes Yes CL - No No 0.78 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. No sample recovery.
18 45 7 CL 125 5377 5208 4350 0.6 1.3 M 4 1.00 S 4 1.10 1.00 7 15.5 0.99 9 6 35 1.5 8 0.067 510.7 0.076 0.88 Yes Yes Yes CL - No No 0.88 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 19 47.5 11 CL 125 5689 5365 4507 0.6 1.3 M 4 1.00 SCAL 7 1.10 0.65 7 16.3 1.00 9 6 57 35 1.4 8 0.067 525.6 0.076 0.88 Yes Yes Yes CL 25 10 No No No 0.88 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 20 50 12 SC 125 6002 5521 4663 0.6 1.3 M 4 1.00 S 7 1.10 1.00 7 17.1 1.00 16 9 12 1.1 10 0.078 540.2 0.075 1.04 Yes Yes Yes SC - Yes Yes 1.04 Less Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25. No fines content data noted on log.

NA 52.5 21 CL 125 6314 5678 4820 0.6 1.3 M 4 1.00 SCAL 12 1.18 0.65 7 17.8 1.00 18 11 35 1.3 14 0.099 554.4 0.075 1.32 No Yes Yes CL - No No 1.32 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. No sample recovery.
23 55 9 SM 125 6627 5834 4976 0.6 1.3 M 4 1.00 S 5 1.10 1.00 7 18.6 1.00 12 7 12 1.1 8 0.063 568.4 0.074 0.85 Yes Yes Yes SM - Yes Yes 0.85 Likely Liquefiable Likely Liquefiable. FSL<1.0. 25 57.5 81 SM 130 6952 6003 5145 0.6 1.3 M 4 1.00 SCAL 47 1.30 0.65 7 19.4 1.00 68 39 12 1.1 42 0.811 582.0 0.074 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. Material is classified as SP-SM on log but 14% fines indicates SM material.
27 60 20 SM 125 7264 6160 5302 0.6 1.3 M 4 1.00 S 11 1.16 1.00 7 20.1 1.00 26 15 14 14 1.1 16 0.118 595.3 0.073 1.62 No Yes Yes SM - Yes No 1.62 Non-Liquefiable Non-Liquefiable. FSL>1.25. 28 63 32 SC 125 7639 6347 5489 0.6 1.3 M 4 1.00 SCAL 18 1.28 0.65 7 21.0 1.00 27 15 12 1.1 16 0.118 610.0 0.072 1.63 No Yes Yes SC - Yes No 1.63 Non-Liquefiable Non-Liquefiable. FSL>1.25. 30 65.5 43 SC 130 7964 6516 5658 0.6 1.3 M 4 1.00 S 24 1.30 1.00 7 21.8 1.00 56 31 12 1.1 33 0.405 622.4 0.071 3.00 No Yes No SC - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. No fines content data noted on log.

Sample is below liquefaction assessment zone (>50' below LS toe).

Conclusions and Comments
2/26/2014
Drilled Nov. 2008
2F-08-08
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
4/8/2014
PROJECT NUMBER: 17326660
From 2F-08-08
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest
Boring ID: Likely Liquefiable
American River (North Bank)
DWR Urban Levee Evaluations Program
H. Hayati
T. Kanax
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3034+63
DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

44.6 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 16.0 Note: Groundwater Depth Below GS During Drilling (ft.) = 28.6 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 16.0 Note: Analyzed Groundwater Depth Below GS (ft.) = 28.6 Energy Ratio = 78 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 1.5 6 CL 120 180 180 180 1.6 1.3 H 6 1.05 S 10 1.11 1.00 7 2.3 0.75 6 10 35 1.3 13 0.234 34.1 0.123 1.90 No No Yes CL - No No 1.90 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

Borehole diameter not noted on log. Assumed 6" for HSA and 4" for mud rotary.
2 3 14 SM 115 353 353 353 1.6 1.3 H 6 1.05 SCAL 22 1.28 0.65 7 2.7 0.75 9 15 41 35 1.3 19 0.300 67.6 0.125 2.41 No No Yes SM - Yes No 2.41 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 5.5 8 ML 119 651 651 651 1.6 1.3 H 6 1.05 S 13 1.15 1.00 7 3.5 0.75 8 13 77 35 1.3 17 0.216 122.1 0.122 1.77 No No Yes ML 17 Yes Yes Yes No 1.77 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 10.5 9 ML 120 1251 1251 1251 1.3 1.3 H 6 1.05 SCAL 11 1.15 0.65 7 5.0 0.84 7 8 35 1.3 11 0.122 226.0 0.117 1.04 Yes No Yes ML - Yes No 1.04 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 13 4 ML 112 1531 1531 1531 1.1 1.3 H 6 1.05 S 5 1.10 1.00 7 5.8 0.87 5 5 59 35 1.5 8 0.089 260.2 0.110 0.81 Yes No Yes ML 23 Yes Yes Yes No 0.81 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 9 18 7 CL-ML 120 2131 2131 2131 1.0 1.3 H 6 1.05 SCAL 7 1.10 0.65 7 7.3 0.92 6 6 35 1.5 8 0.082 317.8 0.097 0.85 Yes No Yes CL-ML - Yes No 0.85 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 10 20.5 4 ML 120 2431 2431 2431 0.9 1.3 H 6 1.05 S 4 1.10 1.00 7 8.1 0.94 5 5 35 1.5 7 0.073 341.8 0.091 0.80 Yes No Yes ML - Yes No 0.80 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 11 23 7 CL-ML 120 2731 2731 2731 0.9 1.3 H 6 1.05 SCAL 6 1.10 0.65 7 8.8 0.95 6 5 35 1.5 8 0.073 360.8 0.086 0.85 Yes No Yes CL-ML - Yes No 0.85 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 12 25.5 3 ML 115 3019 3019 3019 0.8 1.3 H 6 1.05 S 2 1.10 1.00 7 9.6 0.96 4 3 35 1.7 5 0.061 379.8 0.082 0.75 Yes No Yes ML - Yes No 0.75 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 14 30.5 28 SM 125 3644 3523 3523 0.8 1.3 M 4 1.00 SCAL 21 1.30 0.65 7 11.1 0.98 23 17 12 1.1 19 0.159 417.3 0.077 2.06 No Yes Yes SM - Yes No 2.06 Non-Liquefiable Non-Liquefiable. FSL>1.25. 15 33 21 SM 125 3956 3679 3679 0.7 1.3 M 4 1.00 S 15 1.23 1.00 7 11.9 0.98 27 20 37 35 1.2 24 0.237 433.8 0.077 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 16 35.5 28 SC 125 4269 3836 3836 0.7 1.3 M 4 1.00 SCAL 20 1.30 0.65 7 12.6 0.99 23 17 12 1.1 18 0.149 450.2 0.076 1.95 No Yes Yes SC - No No 1.95 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. Boring log indicates variable clay content of 40-60%.
18 38 10 SC 125 4581 3992 3992 0.7 1.3 M 4 1.00 S 7 1.10 1.00 7 13.4 0.99 13 9 12 1.1 10 0.080 466.7 0.076 1.05 Yes Yes Yes SC - No No 1.05 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. Boring log indicates variable clay content of 40-60%.

NA 40.5 15 SC 125 4894 4149 4149 0.7 1.3 M 4 1.00 SCAL 10 1.15 0.65 7 14.2 0.99 13 9 12 1.1 10 0.077 483.0 0.076 1.02 Yes Yes Yes SC - No No 1.02 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. Boring log indicates variable clay content of 40-60%.
19 43 18 CL 125 5206 4305 4305 0.7 1.3 M 4 1.00 S 12 1.18 1.00 7 14.9 0.99 23 16 35 1.3 20 0.162 498.5 0.075 2.15 No Yes Yes CL - No No 2.15 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 20 45.5 96 CL 125 5519 4462 4462 0.7 1.3 M 4 1.00 SCAL 64 1.30 0.65 7 15.7 0.99 81 54 64 35 1.2 63 4.210 513.7 0.075 3.00 No Yes No CL 31 14 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 21 48 31 CL 125 5831 4618 4618 0.7 1.3 M 4 1.00 S 20 1.30 1.00 7 16.5 1.00 40 26 35 1.2 32 0.392 528.5 0.074 3.00 No Yes No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 22 50.5 101 CL 125 6144 4775 4775 0.6 1.3 M 4 1.00 SCAL 65 1.30 0.65 7 17.2 1.00 85 55 35 1.2 65 4.513 543.0 0.074 3.00 No Yes No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 24 53 38 SM 130 6469 4944 4944 0.6 1.3 M 4 1.00 S 24 1.30 1.00 7 18.0 1.00 49 31 40 35 1.2 37 0.587 557.2 0.073 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25.

NA 55.5 25 SM 125 6781 5100 5100 0.6 1.3 M 4 1.00 SCAL 16 1.23 0.65 7 18.7 1.00 21 13 12 1.1 14 0.103 571.1 0.073 1.42 No Yes Yes SM - Yes No 1.42 Non-Liquefiable Non-Liquefiable. FSL>1.25. 25 58 26 SC 130 7106 5269 5269 0.6 1.3 M 4 1.00 S 16 1.24 1.00 7 19.5 1.00 34 21 12 1.1 22 0.186 584.7 0.072 2.58 No Yes Yes SC - Yes No 2.58 Non-Liquefiable Non-Liquefiable. FSL>1.25. 26 60.5 60 SM 130 7431 5438 5438 0.6 1.3 M 4 1.00 SCAL 36 1.30 0.65 7 20.3 1.00 51 31 12 1.1 33 0.402 597.7 0.071 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 27 65.5 120 CL-ML 125 8056 5751 5751 0.6 1.3 M 4 1.00 S 71 1.30 1.00 7 21.8 1.00 156 92 35 1.2 107 100.549 622.4 0.070 3.00 No Yes No CL-ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. Sample is below liquefaction assessment zone (>50' below LS toe).

DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

Data Input By Analyst
American River (North Bank) Results of Analysis
DWR Urban Levee Evaluations Program
H. Hayati
T. Kanax
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3044+66
PROJECT NUMBER: 17326660
NA - Avg. Winter WSE
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest
Boring ID: Likely Liquefiable
Conclusions and Comments
2/26/2014
Drilled Nov. 2008
2F-08-11
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
4/8/2014
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/AMRVGERCF1TLiqSpd_NB/2F-08-11_V1.3SPT Based Liquefaction 9/10/2024
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

27.5 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 14.6 Note: Groundwater Depth Below GS During Drilling (ft.) = 12.9 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 15.5 Note: Analyzed Groundwater Depth Below GS (ft.) = 12.0 Energy Ratio = 78 Mw = 6.5 Location = WatersideEnter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 2 5.5 6 ML 120 660 660 660 1.6 1.3 H 6 1.05 S 10 1.11 1.00 7 3.5 0.75 6 10 35 1.3 13 0.163 116.1 0.114 1.43 No No Yes ML - Yes No 1.43 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

Borehole diameter not noted on log. Assumed 6" for HSA and 4" for mud-rotary.
3 8 8 ML 120 960 960 960 1.4 1.3 H 6 1.05 SCAL 12 1.14 0.65 7 4.3 0.80 6 8 35 1.4 11 0.127 162.8 0.110 1.15 Yes No Yes ML Yes Yes Yes No 1.15 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 13 3 ML 115 1535 1529 1475 1.1 1.3 H 6 1.05 S 3 1.10 1.00 7 5.8 0.87 4 4 87 35 1.6 6 0.080 244.5 0.108 0.74 Yes Yes Yes ML - Yes Yes 0.74 Likely Liquefiable Likely Liquefiable. FSL<1.0. Lab testing on adjacent sample indicates non-plastic.
7 15.5 4 ML 114 1820 1658 1604 1.1 1.3 H 6 1.05 SCAL 4 1.10 0.65 7 6.6 0.90 3 4 68 35 1.6 6 0.074 279.5 0.113 0.65 Yes Yes Yes ML 35 - Yes Yes 0.65 Likely Liquefiable Likely Liquefiable. FSL<1.0. Lab testing on adjacent sample indicates non-plastic.
11 20.5 4 ML 120 2420 1946 1892 1.0 1.3 H 6 1.05 S 4 1.10 1.00 7 8.1 0.94 5 5 84 35 1.5 8 0.082 342.2 0.118 0.70 Yes Yes Yes ML Yes Yes Yes Yes 0.70 Likely Liquefiable Likely Liquefiable. FSL<1.0. Lab testing indicates non-plastic.

NA 23 6 ML 119 2718 2088 2034 1.0 1.3 M 4 1.00 SCAL 6 1.10 0.65 7 8.8 0.95 5 5 35 1.5 7 0.077 373.8 0.119 0.64 Yes Yes Yes ML 29 Yes Yes Yes Yes 0.64 Likely Liquefiable Likely Liquefiable. FSL<1.0. No sample recovery, lab data is from adjacent Shelby sample and indicates non-plastic.
13 28 3 ML 115 3293 2351 2297 0.9 1.3 M 4 1.00 S 3 1.10 1.00 7 10.4 0.97 4 3 87 35 1.6 6 0.067 433.8 0.123 0.55 Yes Yes Yes ML 37 12 No No No 0.55 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 14 30.5 8 CL 120 3593 2495 2441 0.9 1.3 M 4 1.00 SCAL 7 1.10 0.65 7 11.1 0.98 7 6 35 1.4 8 0.081 461.5 0.123 0.66 Yes Yes Yes CL 43 20 No No No 0.66 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 16 33 14 CL 125 3905 2651 2597 0.9 1.3 M 4 1.00 S 12 1.17 1.00 7 11.9 0.98 18 16 35 1.3 19 0.181 487.4 0.122 1.48 No Yes Yes CL - No No 1.48 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 17 35.5 22 CL 125 4218 2808 2754 0.8 1.3 M 4 1.00 SCAL 19 1.28 0.65 7 12.6 0.99 18 15 35 1.3 19 0.178 511.0 0.121 1.48 No Yes Yes CL 32 19 No No No 1.48 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 20 38 12 CL 125 4530 2964 2910 0.8 1.3 M 4 1.00 S 10 1.14 1.00 7 13.4 0.99 15 13 35 1.3 16 0.138 531.5 0.119 1.16 Yes Yes Yes CL - No No 1.16 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction.

NA 40.5 13 CL 125 4843 3121 3067 0.8 1.3 M 4 1.00 SCAL 10 1.15 0.65 7 14.2 0.99 11 9 35 1.3 12 0.097 550.7 0.117 0.83 Yes Yes Yes CL - No No 0.83 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. No sample recovery.
22 45.5 13 SC 125 5468 3434 3380 0.8 1.3 M 4 1.00 S 10 1.14 1.00 7 15.7 0.99 17 13 12 1.1 14 0.112 585.5 0.113 0.99 Yes Yes Yes SC - Yes Yes 0.99 Likely Liquefiable Likely Liquefiable. FSL<1.0. No fines content data noted on log. 24 48 18 SM 125 5780 3590 3536 0.7 1.3 M 4 1.00 SCAL 13 1.20 0.65 7 16.5 1.00 15 11 48 35 1.3 15 0.116 601.6 0.111 1.05 Yes Yes Yes SM - Yes Yes 1.05 Less Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25. 27 50.5 10 SM 125 6093 3747 3693 0.7 1.3 M 4 1.00 S 7 1.10 1.00 7 17.2 1.00 13 9 12 1.1 11 0.084 616.6 0.109 0.77 Yes Yes Yes SM - Yes Yes 0.77 Likely Liquefiable Likely Liquefiable. FSL<1.0. Sample is below liquefaction assessment zone (>50' below LS toe).
28 53 200 ML 125 6405 3903 3849 0.7 1.3 M 4 1.00 SCAL 143 1.30 0.65 7 18.0 1.00 169 121 35 1.2 139 ###### 630.4 0.106 3.00 No Yes No ML Yes Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. Sample is below liquefaction assessment zone (>50' below LS toe).

Conclusions and Comments
2/26/2014
Drilled May 2009
2F-09-05
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
4/8/2014
PROJECT NUMBER: 17326660
From 2F-09-05
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Waterside
Boring ID: Likely Liquefiable
American River (North Bank)
DWR Urban Levee Evaluations Program
H. Hayati
T. Kanax
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3023+23
DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

44.0 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 10.0 Note: Groundwater Depth Below GS During Drilling (ft.) = 34.0 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 18.3 Note: Analyzed Groundwater Depth Below GS (ft.) = 25.7 Energy Ratio = 75 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) S0 0.5 19 ML 125 63 63 63 1.6 1.3 H 6 1.05 S 30 1.30 1.00 7 2.0 0.75 19 30 35 1.2 36 1.751 11.4 0.119 3.00 No No No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S1 2.5 16 ML 125 313 313 313 1.6 1.3 H 6 1.05 S 26 1.30 1.00 7 2.6 0.75 16 25 74 35 1.2 30 0.748 56.5 0.118 3.00 No No No ML 29 6 Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S2 4.5 10 ML 125 563 563 563 1.6 1.3 H 6 1.05 S 16 1.18 1.00 7 3.2 0.75 10 16 35 1.3 20 0.283 100.5 0.116 2.44 No No Yes ML - Yes No 2.44 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S3 6.5 11 ML 125 813 813 813 1.6 1.3 H 6 1.05 S 17 1.20 1.00 7 3.8 0.76 11 17 77 35 1.2 21 0.292 143.4 0.115 2.54 No No Yes ML - Yes No 2.54 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S4 8.5 8 ML 120 1053 1053 1053 1.4 1.3 H 6 1.05 S 11 1.13 1.00 7 4.4 0.81 8 12 35 1.3 15 0.167 185.3 0.114 1.46 No No Yes ML - Yes No 1.46 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S5 10.5 8 SP 115 1283 1283 1283 1.2 1.3 H 6 1.05 S 10 1.12 1.00 7 5.0 0.84 9 11 5 1.0 11 0.121 226.0 0.115 1.06 Yes No Yes SP - Yes No 1.06 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S6 12.5 3 ML 115 1513 1513 1513 1.1 1.3 H 6 1.05 S 3 1.10 1.00 7 5.6 0.87 3 4 56 35 1.6 6 0.078 253.4 0.109 0.72 Yes No Yes ML - Yes No 0.72 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S7 14.5 4 ML 120 1753 1753 1753 1.1 1.3 H 6 1.05 S 4 1.10 1.00 7 6.2 0.89 5 5 35 1.5 7 0.082 280.7 0.104 0.79 Yes No Yes ML - Yes No 0.79 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S8 16.5 8 ML 120 1993 1993 1993 1.0 1.3 H 6 1.05 SCAL 8 1.11 0.65 7 6.9 0.91 6 6 35 1.4 9 0.088 302.7 0.099 0.89 Yes No Yes ML - Yes No 0.89 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S9 18.5 10 ML 120 2233 2233 2233 0.9 1.3 H 6 1.05 SCAL 9 1.13 0.65 7 7.5 0.93 8 7 35 1.4 10 0.095 322.9 0.094 1.01 Yes No Yes ML - Yes No 1.01 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S10 20.5 10 ML 120 2473 2473 2473 0.9 1.3 H 6 1.05 SCAL 9 1.12 0.65 7 8.1 0.94 8 7 35 1.4 10 0.090 341.8 0.090 1.00 Yes No Yes ML - Yes No 1.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S11 22.5 9 ML 120 2713 2713 2713 0.9 1.3 H 6 1.05 SCAL 8 1.11 0.65 7 8.7 0.95 7 6 35 1.4 9 0.081 357.0 0.086 0.95 Yes No Yes ML - Yes No 0.95 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S12 24.5 10 ML 120 2953 2953 2953 0.8 1.3 H 6 1.05 SCAL 8 1.11 0.65 7 9.3 0.96 8 7 60 35 1.4 9 0.082 372.2 0.082 1.00 Yes No Yes ML - Yes No 1.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S13 26.5 9 ML 120 3193 3193 3145 0.8 1.3 H 6 1.05 SCAL 7 1.10 0.65 7 9.9 0.97 7 6 35 1.4 8 0.075 387.4 0.080 0.94 Yes Yes Yes ML - Yes Yes 0.94 Likely Liquefiable Likely Liquefiable. FSL<1.0.

S14 28.5 13 ML 125 3443 3443 3270 0.8 1.3 H 6 1.05 SCAL 10 1.14 0.65 7 10.5 0.97 11 8 35 1.4 11 0.091 402.6 0.080 1.14 Yes Yes Yes ML - Yes Yes 1.14 Less Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25.

S15 30.5 12 ML 125 3693 3693 3395 0.7 1.3 H 6 1.05 SCAL 9 1.12 0.65 7 11.1 0.98 10 7 35 1.4 10 0.084 417.3 0.080 1.05 Yes Yes Yes ML - Yes Yes 1.05 Less Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25.

S16 32.5 12 SM 115 3923 3923 3501 0.7 1.3 H 6 1.05 SCAL 9 1.12 0.65 7 11.7 0.98 10 7 16 16 1.2 8 0.073 430.5 0.080 0.91 Yes Yes Yes SM - Yes Yes 0.91 Likely Liquefiable Likely Liquefiable. FSL<1.0.

S17 34.5 12 SP 115 4153 4121 3606 0.7 1.3 H 6 1.05 SCAL 8 1.12 0.65 7 12.3 0.98 10 7 5 1.1 7 0.067 443.6 0.080 0.84 Yes Yes Yes SP - Yes Yes 0.84 Likely Liquefiable Likely Liquefiable. FSL<1.0.

S18 36.5 17 SP-SM 125 4403 4247 3731 0.7 1.3 H 6 1.05 SCAL 12 1.17 0.65 7 13.0 0.99 14 10 11 11 1.1 11 0.086 456.8 0.080 1.08 Yes Yes Yes SP-SM - Yes Yes 1.08 Less Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25.

S19 38.5 16 SP-SM 125 4653 4372 3856 0.7 1.3 H 6 1.05 SCAL 11 1.16 0.65 7 13.6 0.99 14 9 8 1.1 10 0.079 470.0 0.079 1.00 Yes Yes Yes SP-SM - Yes Yes 1.00 Likely Liquefiable Likely Liquefiable. FSL=1.0.

S20 40.5 65 GP 130 4913 4507 3991 0.7 1.3 H 6 1.05 SCAL 43 1.30 0.65 7 14.2 0.99 55 37 5 1.0 38 0.629 483.0 0.079 3.00 No Yes No GP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25.

S21 42.5 69 GP 130 5173 4642 4127 0.7 1.3 H 6 1.05 SCAL 45 1.30 0.65 7 14.8 0.99 58 38 5 1.0 39 0.712 495.4 0.078 3.00 No Yes No GP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25.

S22 44.5 75 SP 130 5433 4777 4262 0.6 1.3 H 6 1.05 SCAL 49 1.30 0.65 7 15.4 0.99 64 41 5 1.0 42 0.874 507.6 0.077 3.00 No Yes No SP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25.

S23 46.5 100 SP 130 5693 4913 4397 0.6 1.3 H 6 1.05 SCAL 64 1.30 0.65 7 16.0 1.00 85 54 5 5 1.0 56 2.348 519.7 0.077 3.00 No Yes No SP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25.

S24 48.5 100 SP 130 5953 5048 4532 0.6 1.3 H 6 1.05 SCAL 63 1.30 0.65 7 16.6 1.00 85 53 5 1.0 55 2.210 531.4 0.076 3.00 No Yes No SP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25.

S25 50.5 89 SP 130 6213 5183 4667 0.6 1.3 H 6 1.05 SCAL 55 1.30 0.65 7 17.2 1.00 76 47 5 1.0 48 1.335 543.0 0.076 3.00 No Yes No SP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25.

S26 52.5 10 GC 130 6473 5318 4803 0.6 1.3 H 6 1.05 SCAL 6 1.10 0.65 7 17.8 1.00 9 5 26 26 1.4 7 0.060 554.4 0.075 0.80 Yes Yes Yes GC 36 14 No No No 0.80 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. Fines content >20%, PI>10, LL>35.

S27 54.5 84 ML 125 6723 5443 4928 0.6 1.3 H 6 1.05 SCAL 51 1.30 0.65 7 18.4 1.00 72 43 35 1.2 51 1.642 565.6 0.075 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. Sample is below liquefaction assessment zone (>50' below LS toe).

Conclusions and Comments
2/26/2014
Drilled Aug. 2011
2F-11-158
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
4/8/2014
PROJECT NUMBER: 17326660
From 2F-11-158
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest
Boring ID: Likely Liquefiable
American River (North Bank)
DWR Urban Levee Evaluations Program
H. Hayati
T. Kanax
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3209+08
DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

47.0 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 21.0 Note: Groundwater Depth Below GS During Drilling (ft.) = 26.0 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 16.5 Note: Analyzed Groundwater Depth Below GS (ft.) = 30.5 Energy Ratio = 89 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 3 45 SC 130 390 390 390 1.6 1.5 SFA 6 1.05 SCAL 72 1.30 0.65 7 2.7 0.75 34 55 12 1.1 58 5.505 67.6 0.113 3.00 No No No SC - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 5.5 16 SM 125 703 703 703 1.6 1.5 H 7.25 1.11 S 26 1.30 1.00 7 3.5 0.75 20 32 40 35 1.2 38 1.033 122.1 0.113 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 8 33 SC-SM 125 1015 1015 1015 1.4 1.5 H 7.25 1.11 SCAL 46 1.30 0.65 7 4.3 0.80 28 39 30 30 1.2 46 1.689 174.9 0.112 3.00 No No No SC-SM 22 6 8 Judgment Needed Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 10.5 22 SC-SM 130 1340 1340 1340 1.2 1.5 H 7.25 1.11 S 27 1.30 1.00 7 5.0 0.84 30 37 36 35 1.2 44 1.391 226.0 0.110 3.00 No No No SC-SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 13 32 SM 130 1665 1665 1665 1.1 1.5 H 7.25 1.11 SCAL 35 1.30 0.65 7 5.8 0.87 30 33 12 1.1 35 0.660 260.2 0.102 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 15.5 24 SM 130 1990 1990 1990 1.0 1.5 H 7.25 1.11 S 24 1.30 1.00 7 6.6 0.90 36 36 46 35 1.2 42 1.100 292.6 0.096 3.00 No No No SM 16 2 5 Judgment Needed Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 18 72 CH 125 2303 2303 2303 0.9 1.5 H 7.25 1.11 S 67 1.30 1.00 7 7.3 0.92 109 102 69 35 1.2 118 306.760 317.8 0.090 3.00 No No No CH 50 34 12 No No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 8 20.5 100 CL 125 2615 2615 2615 0.9 1.5 H 7.25 1.11 SCAL 87 1.30 0.65 7 8.1 0.94 101 88 35 1.2 102 89.088 341.8 0.085 3.00 No No No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 9 23 19 CL 125 2928 2928 2928 0.8 1.5 M 4.5 1.00 SW 16 1.26 1.26 7 8.8 0.95 34 28 35 1.2 34 0.506 360.8 0.080 3.00 No No No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 10 25.5 40 CL 125 3240 3240 3240 0.8 1.5 M 4.5 1.00 SCAL 31 1.30 0.65 7 9.6 0.96 37 29 64 35 1.2 35 0.549 379.8 0.076 3.00 No No No CL 49 25 19 No No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 11 28 22 ML 125 3553 3428 3553 0.8 1.5 M 4.5 1.00 S 17 1.28 1.00 7 10.4 0.97 32 24 35 1.2 29 0.349 398.8 0.073 3.00 No No No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 12 30.5 16 SC 125 3865 3584 3864 0.7 1.5 M 4.5 1.00 SCAL 12 1.19 0.65 7 11.1 0.98 15 11 17 17 1.1 13 0.099 417.3 0.070 1.41 No Yes Yes SC 54 29 36 No Yes No 1.41 Non-Liquefiable Non-Liquefiable. FSL>1.25. 13 33 2 SM 115 4153 3716 3996 0.7 1.5 M 4.5 1.00 S 1 1.10 1.00 7 11.9 0.98 3 2 41 35 2.0 4 0.051 433.8 0.071 0.72 Yes Yes Yes SM 47 4 43 No Yes Yes 0.72 Likely Liquefiable Likely Liquefiable. FSL<1.0. Lab data is from adjacent Shelby tube sample in same layer.
15 38 7 SM 115 4728 3979 4259 0.7 1.5 M 4.5 1.00 SCAL 5 1.10 0.65 7 13.4 0.99 7 5 12 1.2 6 0.056 466.7 0.071 0.79 Yes Yes Yes SM - Yes Yes 0.79 Likely Liquefiable Likely Liquefiable. FSL<1.0. 16 40.5 21 SM 130 5053 4148 4428 0.7 1.5 M 4.5 1.00 S 15 1.25 1.00 7 14.2 0.99 31 21 12 1.1 23 0.205 483.0 0.071 2.89 No Yes No SM - Yes No 2.89 Non-Liquefiable Non-Liquefiable. FSL>1.25. 17 43 17 SM 125 5365 4304 4584 0.7 1.5 M 4.5 1.00 SCAL 12 1.19 0.65 7 14.9 0.99 16 11 16 16 1.1 13 0.093 498.5 0.071 1.32 No Yes Yes SM 44 8 45 No Yes No 1.32 Non-Liquefiable Non-Liquefiable. FSL>1.25. 18 45.5 9 ML 125 5678 4461 4741 0.7 1.5 M 4.5 1.00 S 6 1.10 1.00 7 15.7 0.99 13 9 35 1.3 12 0.087 513.7 0.070 1.24 Yes Yes Yes ML - Yes Yes 1.24 Less Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25. 19 48 8 SM 115 5965 4592 4872 0.7 1.5 M 4.5 1.00 SCAL 5 1.10 0.65 7 16.5 1.00 8 5 12 1.2 6 0.055 528.5 0.071 0.78 Yes Yes Yes SM - Yes Yes 0.78 Likely Liquefiable Likely Liquefiable. FSL<1.0. 20 50.5 8 SC 125 6278 4749 5029 0.6 1.5 M 4.5 1.00 S 5 1.10 1.00 7 17.2 1.00 12 8 26 26 1.3 10 0.073 543.0 0.070 1.04 Yes Yes Yes SC 40 16 47 No No No 1.04 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. Fines content >20%.
21 53 3 ML 115 6565 4880 5160 0.6 1.5 M 4.5 1.00 SCAL 2 1.10 0.65 7 18.0 1.00 3 2 35 2.1 4 0.046 557.2 0.070 0.66 Yes Yes Yes ML - Yes Yes 0.66 Likely Liquefiable Likely Liquefiable. FSL<1.0. 23 58 95 CL 125 7190 5193 5473 0.6 1.5 M 4.5 1.00 S 59 1.30 1.00 7 19.5 1.00 141 87 35 1.2 101 68.700 584.7 0.069 3.00 No Yes No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 24 60.5 100 SM 130 7515 5362 5642 0.6 1.5 M 4.5 1.00 SCAL 61 1.30 0.65 7 20.3 1.00 96 59 44 35 1.2 69 5.941 597.7 0.069 3.00 No Yes No SM 37 2 34 No Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 25 63 54 SM 130 7840 5531 5811 0.6 1.5 M 4.5 1.00 S 32 1.30 1.00 7 21.0 1.00 80 48 12 1.1 51 1.553 610.0 0.068 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 26 65.5 100 SM 130 8165 5700 5980 0.6 1.5 M 4.5 1.00 SCAL 59 1.30 0.65 7 21.8 1.00 96 57 17 17 1.1 62 3.457 622.4 0.068 3.00 No Yes No SM 55 23 39 No Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 27 68 100 SM 130 8490 5869 6149 0.6 1.5 M 4.5 1.00 S 58 1.30 1.00 7 22.6 1.00 148 87 12 1.1 91 31.406 634.7 0.067 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. Sample is below liquefaction assessment zone (>50' below LS toe).

DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

Data Input By Analyst
American River (North Bank) Results of Analysis
DWR Urban Levee Evaluations Program
H. Hayati
T. Kanax
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3085+93
PROJECT NUMBER: 17326660
From 2F-11-164
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest
Boring ID: Likely Liquefiable
Conclusions and Comments
2/26/2014
Drilled Nov. 2011
2F-11-164
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
4/8/2014
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/AMRVGERCF1TLiqSpd_NB/2F-11-164_V1.3SPT Based Liquefaction 9/10/2024
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

53.2 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 19.2 Note: Groundwater Depth Below GS During Drilling (ft.) = 34.0 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 21.4 Note: Analyzed Groundwater Depth Below GS (ft.) = 31.8 Energy Ratio = 75 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 3 16 SM 115 345 345 345 1.6 1.3 H 6 1.05 SCAL 26 1.30 0.65 7 2.7 0.75 10 16 38 35 1.2 20 0.342 67.6 0.127 2.68 No No Yes SM 22 2 15 Judgment Needed Yes No 2.68 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 5.5 27 SM 125 658 658 658 1.6 1.3 H 6 1.05 S 43 1.30 1.00 7 3.5 0.75 27 43 12 1.1 45 1.831 122.1 0.121 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 8 25 SM 125 970 970 970 1.4 1.3 H 6 1.05 SCAL 36 1.30 0.65 7 4.3 0.80 17 24 46 35 1.2 30 0.509 174.9 0.117 3.00 No No No SM 13 Yes Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 10.5 15 ML 125 1283 1283 1283 1.2 1.3 H 6 1.05 S 19 1.25 1.00 7 5.0 0.84 17 21 35 1.2 25 0.342 226.0 0.115 2.99 No No No ML - Yes No 2.99 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 13 11 ML 120 1583 1583 1583 1.1 1.3 H 6 1.05 SCAL 12 1.16 0.65 7 5.8 0.87 8 9 51 35 1.3 12 0.121 260.2 0.107 1.13 Yes No Yes ML 15 - Yes No 1.13 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 15.5 13 SM 125 1895 1895 1895 1.0 1.3 M 4.3 1.00 S 13 1.17 1.00 7 6.6 0.90 15 15 39 35 1.3 19 0.190 292.6 0.100 1.89 No No Yes SM 25 Yes Yes Yes No 1.89 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 18 5 SM 115 2183 2183 2183 1.0 1.3 M 4.3 1.00 S 5 1.10 1.00 7 7.3 0.92 6 6 12 1.2 6 0.071 317.8 0.095 0.75 Yes No Yes SM - Yes No 0.75 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 8 20.5 8 SM 115 2470 2470 2470 0.9 1.3 M 4.3 1.00 S 7 1.10 1.00 7 8.1 0.94 9 8 12 1.1 9 0.087 341.8 0.090 0.97 Yes No Yes SM - Yes No 0.97 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 9 23 19 SM 125 2783 2783 2783 0.8 1.3 M 4.3 1.00 S 16 1.22 1.00 7 8.8 0.95 23 19 12 1.1 21 0.196 360.8 0.084 2.33 No No Yes SM 11 - Yes No 2.33 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 10 25.5 8 SM 115 3070 3070 3070 0.8 1.3 M 4.3 1.00 S 6 1.10 1.00 7 9.6 0.96 10 8 48 35 1.4 11 0.089 379.8 0.080 1.11 Yes No Yes SM - Yes No 1.11 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 11 28 12 SC 115 3358 3358 3358 0.8 1.3 M 4.3 1.00 SCAL 9 1.12 0.65 7 10.4 0.97 9 7 48 35 1.4 10 0.084 398.8 0.077 1.09 Yes No Yes SC - No No 1.09 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 12 30.5 9 SM 125 3670 3670 3670 0.7 1.3 M 4.3 1.00 S 7 1.10 1.00 7 11.1 0.98 11 8 41 35 1.4 11 0.087 417.3 0.074 1.18 Yes No Yes SM - Yes No 1.18 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 13 33 14 SM 125 3983 3983 3909 0.7 1.3 M 4.3 1.00 SCAL 10 1.13 0.65 7 11.9 0.98 11 8 12 1.1 9 0.073 433.8 0.072 1.01 Yes Yes Yes SM 18 - Yes Yes 1.01 Less Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25. 14 35.5 16 SM 125 4295 4202 4065 0.7 1.3 M 4.3 1.00 S 11 1.15 1.00 7 12.6 0.99 20 14 21 21 1.2 16 0.122 450.2 0.072 1.69 No Yes Yes SM - Yes No 1.69 Non-Liquefiable Non-Liquefiable. FSL>1.25. 15 38 23 SM 125 4608 4359 4222 0.7 1.3 M 4.3 1.00 SCAL 16 1.22 0.65 7 13.4 0.99 18 13 12 1.1 14 0.103 466.7 0.072 1.43 No Yes Yes SM 15 - Yes No 1.43 Non-Liquefiable Non-Liquefiable. FSL>1.25. 16 40.5 26 GP-GM 130 4933 4528 4391 0.7 1.3 M 4.3 1.00 S 17 1.25 1.00 7 14.2 0.99 32 21 10 10 1.1 23 0.201 483.0 0.072 2.81 No Yes Yes GP-GM - Yes No 2.81 Non-Liquefiable Non-Liquefiable. FSL>1.25. 17 43 15 GP-GM 130 5258 4697 4560 0.7 1.3 M 4.3 1.00 S 10 1.13 1.00 7 14.9 0.99 19 12 8 1.1 13 0.095 498.5 0.071 1.34 No Yes Yes GP-GM - Yes No 1.34 Non-Liquefiable Non-Liquefiable. FSL>1.25. 18 45.5 35 GP-GM 130 5583 4866 4729 0.6 1.3 M 4.3 1.00 S 22 1.30 1.00 7 15.7 0.99 44 28 8 1.0 29 0.319 513.7 0.071 3.00 No Yes No GP-GM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 19 48 85 GP-GM 130 5908 5035 4898 0.6 1.3 M 4.3 1.00 S 54 1.30 1.00 7 16.5 1.00 106 67 8 1.0 69 6.382 528.5 0.070 3.00 No Yes No GP-GM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 20 50.5 54 GP-GM 130 6233 5204 5067 0.6 1.3 M 4.3 1.00 S 33 1.30 1.00 7 17.2 1.00 67 42 8 1.0 43 0.913 543.0 0.070 3.00 No Yes No GP-GM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 21 53 45 CL 125 6545 5360 5223 0.6 1.3 M 4.3 1.00 S 27 1.30 1.00 7 18.0 1.00 56 34 35 1.2 41 0.743 557.2 0.069 3.00 No Yes No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 22 55.5 79 CL 125 6858 5517 5380 0.6 1.3 M 4.3 1.00 SCAL 48 1.30 0.65 7 18.7 1.00 64 39 35 1.2 46 1.065 571.1 0.069 3.00 No Yes No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 23 58 68 CL 125 7170 5673 5536 0.6 1.3 M 4.3 1.00 S 40 1.30 1.00 7 19.5 1.00 85 50 35 1.2 59 2.905 584.7 0.069 3.00 No Yes No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 24 60.5 80 CL 125 7483 5830 5693 0.6 1.3 M 4.3 1.00 S 47 1.30 1.00 7 20.3 1.00 100 59 80 35 1.2 68 5.771 597.7 0.068 3.00 No Yes No CL 37 13 28 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. Sample is below liquefaction assessment zone (>50' below LS toe).

Conclusions and Comments
2/26/2014
Drilled Oct. 2011
2F-11-167
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
4/8/2014
PROJECT NUMBER: 17326660
NA, used Avg. Summer WSE
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest
Boring ID: Likely Liquefiable
American River (North Bank)
DWR Urban Levee Evaluations Program
H. Hayati
T. Kanax
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3296+68
DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

47.2 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 9.7 Note: Groundwater Depth Below GS During Drilling (ft.) = 37.5 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 17.0 Note: Analyzed Groundwater Depth Below GS (ft.) = 30.2 Energy Ratio = 75 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 0.5 22 CL 125 63 63 63 1.6 1.3 SFA 4 1.00 S 35 1.30 1.00 7 2.0 0.75 21 33 35 1.2 39 2.279 11.4 0.119 3.00 No No No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 2.5 30 SM 125 313 313 313 1.6 1.3 SFA 4 1.00 S 48 1.30 1.00 7 2.6 0.75 28 45 12 1.1 48 2.736 56.5 0.118 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 4.5 18 SM 125 563 563 563 1.6 1.3 SFA 4 1.00 S 29 1.30 1.00 7 3.2 0.75 17 27 12 1.1 29 0.564 100.5 0.116 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 6.5 16 SM 125 813 813 813 1.6 1.3 SFA 4 1.00 S 25 1.30 1.00 7 3.8 0.76 15 24 12 1.1 26 0.401 143.4 0.115 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 8.5 12 CL 125 1063 1063 1063 1.4 1.3 SFA 4 1.00 S 16 1.19 1.00 7 4.4 0.81 12 17 35 1.2 21 0.254 185.3 0.113 2.24 No No Yes CL - No No 2.24 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 10.5 19 MH 125 1313 1313 1313 1.2 1.3 SFA 4 1.00 S 23 1.30 1.00 7 5.0 0.84 20 25 35 1.2 30 0.478 226.0 0.112 3.00 No No No MH - No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 12.5 14 ML 125 1563 1563 1563 1.1 1.3 SFA 4 1.00 S 16 1.20 1.00 7 5.6 0.87 15 17 35 1.2 21 0.241 253.4 0.105 2.29 No No Yes ML - No No 2.29 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 8 14.5 13 ML 125 1813 1813 1813 1.1 1.3 SFA 4 1.00 S 14 1.17 1.00 7 6.2 0.89 14 15 89 35 1.3 19 0.195 280.7 0.101 1.94 No No Yes ML 36 9 No No No 1.94 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 9 18 9 MH 125 2250 2250 2250 0.9 1.3 SFA 4 1.00 S 8 1.11 1.00 7 7.3 0.92 10 10 35 1.3 13 0.116 317.8 0.092 1.26 No No Yes MH - No No 1.26 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 10 21.5 10 MH 125 2688 2688 2688 0.9 1.3 SFA 4 1.00 S 9 1.11 1.00 7 8.4 0.95 12 10 35 1.3 13 0.114 349.4 0.085 1.35 No No Yes MH - No No 1.35 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 11 25 12 ML 125 3125 3125 3125 0.8 1.3 SFA 4 1.00 S 10 1.13 1.00 7 9.4 0.96 14 12 35 1.3 15 0.122 376.0 0.078 1.56 No No Yes ML - Yes No 1.56 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 12 28.5 18 ML 125 3563 3563 3563 0.7 1.3 SFA 4 1.00 S 13 1.19 1.00 7 10.5 0.97 22 16 35 1.2 20 0.179 402.6 0.073 2.44 No No Yes ML - Yes No 2.44 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 13 32 11 ML 125 4000 4000 3885 0.7 1.3 SFA 4 1.00 S 8 1.10 1.00 7 11.6 0.98 13 10 62 35 1.3 13 0.097 427.2 0.071 1.36 No Yes Yes ML 19 3 Yes Yes No 1.36 Non-Liquefiable Non-Liquefiable. FSL>1.25. 14 35.5 14 SP-SM 125 4438 4438 4104 0.7 1.3 SFA 4 1.00 S 9 1.13 1.00 7 12.6 0.99 17 12 8 1.1 12 0.094 450.2 0.071 1.32 No Yes Yes SP-SM - Yes No 1.32 Non-Liquefiable Non-Liquefiable. FSL>1.25. 15 39 29 SP-SM 130 4893 4799 4341 0.6 1.3 SFA 4 1.00 S 19 1.28 1.00 7 13.7 0.99 36 23 6 6 1.0 24 0.222 473.3 0.071 3.00 No Yes No SP-SM Yes Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25.

T. Kanax
PROJECT NUMBER: Calculated Values
Non-Liquefiable
Task Area: American River
LEVEE SEGMENT:

Data Input By Analyst
Results of Analysis
2/26/2014
4/8/2014
H. Hayati
American River (North Bank)
DWR Urban Levee Evaluations Program
17326660
DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Boring ID: Likely Liquefiable
Ground Elevation (ft.)=
2F-96-10
Crest
Station:

Conclusions and Comments
Drilled Sept. 1996
Liquefaction Assessment
Less Likely Liquefiable
From 2F-96-10
Avg. Winter WSE
3126+49
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/AMRVGERCF1TLiqSpd_NB/2F-96-10_V1.3SPT Based Liquefaction 9/10/2024
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

48.1 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 16.7 Note: Groundwater Depth Below GS During Drilling (ft.) = 31.4 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 16.7 Note: Analyzed Groundwater Depth Below GS (ft.) = 31.4 Energy Ratio = 75 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 0.5 8 SC 115 58 58 58 1.6 1.3 H 6 1.05 S 13 1.14 1.00 7 2.0 0.75 8 13 12 1.1 14 0.342 11.4 0.129 2.64 No No Yes SC - Yes No 2.64 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 2.5 23 CL 125 308 308 308 1.6 1.3 H 6 1.05 S 37 1.30 1.00 7 2.6 0.75 23 36 35 1.2 43 1.929 56.5 0.120 3.00 No No No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 4.5 21 CL 125 558 558 558 1.6 1.3 H 6 1.05 S 34 1.30 1.00 7 3.2 0.75 21 33 35 1.2 39 1.249 100.5 0.117 3.00 No No No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 6.5 17 ML 125 808 808 808 1.6 1.3 H 6 1.05 S 27 1.30 1.00 7 3.8 0.76 17 27 59 35 1.2 32 0.660 143.4 0.115 3.00 No No No ML Yes Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 8.5 21 CL 125 1058 1058 1058 1.4 1.3 H 6 1.05 S 29 1.30 1.00 7 4.4 0.81 22 31 35 1.2 37 0.841 185.3 0.114 3.00 No No No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 10.5 10 CL 125 1308 1308 1308 1.2 1.3 H 6 1.05 S 12 1.15 1.00 7 5.0 0.84 11 14 35 1.3 17 0.187 226.0 0.112 1.66 No No Yes CL - No No 1.66 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 12.5 11 CL 125 1558 1558 1558 1.1 1.3 H 6 1.05 S 12 1.16 1.00 7 5.6 0.87 13 14 35 1.3 18 0.187 253.4 0.106 1.77 No No Yes CL - No No 1.77 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 8 14.5 12 CL 125 1808 1808 1808 1.1 1.3 H 6 1.05 S 13 1.17 1.00 7 6.2 0.89 14 15 35 1.3 19 0.188 280.7 0.101 1.86 No No Yes CL - No No 1.86 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 9 16.5 16 CL 125 2058 2058 2058 1.0 1.3 H 6 1.05 S 16 1.22 1.00 7 6.9 0.91 19 19 35 1.2 23 0.257 302.7 0.096 2.69 No No No CL - No No 2.69 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 10 18.5 11 MH 125 2308 2308 2308 0.9 1.3 H 6 1.05 S 10 1.14 1.00 7 7.5 0.93 13 12 35 1.3 16 0.144 322.9 0.091 1.58 No No Yes MH - No No 1.58 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 11 20.5 11 ML 125 2558 2558 2558 0.9 1.3 H 6 1.05 S 10 1.13 1.00 7 8.1 0.94 14 12 92 35 1.3 15 0.135 341.8 0.087 1.55 No No Yes ML 32 8 Yes Yes No 1.55 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 12 23.5 12 ML 125 2933 2933 2933 0.8 1.3 H 6 1.05 S 10 1.14 1.00 7 9.0 0.96 15 12 35 1.3 16 0.134 364.6 0.081 1.66 No No Yes ML - Yes No 1.66 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 13 28.5 12 SM 125 3558 3558 3558 0.7 1.3 H 6 1.05 S 9 1.13 1.00 7 10.5 0.97 15 11 12 1.1 13 0.100 402.6 0.074 1.36 No No Yes SM - Yes No 1.36 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 14 33.5 8 SM 115 4133 4001 4001 0.7 1.3 H 6 1.05 S 6 1.10 1.00 7 12.0 0.98 10 7 49 35 1.4 10 0.080 437.1 0.071 1.13 Yes Yes Yes SM Yes Yes Yes Yes 1.13 Less Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25. 15 38.5 10 CL 125 4758 4314 4314 0.7 1.3 H 6 1.05 S 7 1.10 1.00 7 13.6 0.99 13 9 35 1.3 12 0.089 470.0 0.071 1.26 No Yes Yes CL - No No 1.26 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 16 58.5 100 SM 130 7358 5666 5666 0.6 1.3 H 6 1.05 S 59 1.30 1.00 7 19.7 1.00 131 78 12 1.1 82 16.231 587.3 0.067 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 17 63.5 100 ML 125 7983 5979 5979 0.6 1.3 H 6 1.05 S 58 1.30 1.00 7 21.2 1.00 131 76 87 35 1.2 88 25.104 612.5 0.067 3.00 No Yes No ML 36 8 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 18 68.5 100 CL 125 8608 6292 6292 0.6 1.3 H 6 1.05 S 56 1.30 1.00 7 22.7 1.00 131 74 35 1.2 86 21.064 637.1 0.066 3.00 No Yes No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 19 73.5 59 CL 125 9233 6605 6605 0.6 1.3 H 6 1.05 S 32 1.30 1.00 7 24.2 1.00 77 43 35 1.2 50 1.419 661.8 0.065 3.00 No Yes No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. Sample is at bottom of liquefaction assessment zone (>50' below LS toe).

DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

Data Input By Analyst
American River (North Bank) Results of Analysis
DWR Urban Levee Evaluations Program
K. Atyam
E. Julian
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3106+13
PROJECT NUMBER: 17326660
NA, used Avg. Winter WSE
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest
Boring ID: Likely Liquefiable
Conclusions and Comments
4/23/2014
Drilled April 1997
2F-97-04
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
5/1/2014
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/AMRVGERCF1TLiqSpd_NB/2F-97-04_V1.3SPT Based Liquefaction 9/10/2024
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

53.2 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 21.9 Note: Groundwater Depth Below GS During Drilling (ft.) = 31.3 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 21.9 Note: Analyzed Groundwater Depth Below GS (ft.) = 31.3 Energy Ratio = 75 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 0.5 14 SC 125 63 63 63 1.6 1.3 H 6 1.05 S 22 1.27 1.00 7 2.0 0.75 14 22 12 1.1 24 0.703 11.4 0.119 3.00 No No No SC - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 2.5 13 SM 125 313 313 313 1.6 1.3 H 6 1.05 S 21 1.25 1.00 7 2.6 0.75 13 20 32 32 1.2 25 0.484 56.5 0.118 3.00 No No No SM Yes Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 4.5 7 SM 115 543 543 543 1.6 1.3 H 6 1.05 S 11 1.12 1.00 7 3.2 0.75 7 11 12 1.1 12 0.162 100.5 0.120 1.34 No No Yes SM - Yes No 1.34 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 6.5 29 SM 125 793 793 793 1.6 1.3 H 6 1.05 S 46 1.30 1.00 7 3.8 0.76 29 46 12 1.1 49 2.319 143.4 0.118 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 8.5 19 SM 125 1043 1043 1043 1.4 1.3 H 6 1.05 S 26 1.30 1.00 7 4.4 0.81 20 28 12 1.1 30 0.507 185.3 0.116 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 10.5 22 SC 125 1293 1293 1293 1.2 1.3 H 6 1.05 S 27 1.30 1.00 7 5.0 0.84 24 30 12 1.1 32 0.574 226.0 0.114 3.00 No No No SC - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 12.5 10 SM 125 1543 1543 1543 1.1 1.3 H 6 1.05 S 11 1.14 1.00 7 5.6 0.87 11 13 12 1.1 14 0.141 253.4 0.107 1.32 No No Yes SM - Yes No 1.32 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 8 14.5 5 SM 115 1773 1773 1773 1.1 1.3 H 6 1.05 S 5 1.10 1.00 7 6.2 0.89 6 6 12 1.1 7 0.080 280.7 0.103 0.78 Yes No Yes SM - Yes No 0.78 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 9 16.5 5 SM 115 2003 2003 2003 1.0 1.3 H 6 1.05 S 5 1.10 1.00 7 6.9 0.91 6 6 41 35 1.4 9 0.086 302.7 0.098 0.88 Yes No Yes SM Yes Yes Yes No 0.88 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 10 18.5 8 SM 115 2233 2233 2233 0.9 1.3 H 6 1.05 S 8 1.10 1.00 7 7.5 0.93 10 9 12 1.1 10 0.095 322.9 0.094 1.01 Yes No Yes SM - Yes No 1.01 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 11 20.5 8 SM 115 2463 2463 2463 0.9 1.3 H 6 1.05 S 7 1.10 1.00 7 8.1 0.94 10 9 12 1.1 10 0.090 341.8 0.090 1.00 Yes No Yes SM - Yes No 1.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 12 23.5 10 SM 125 2838 2838 2838 0.8 1.3 H 6 1.05 S 8 1.12 1.00 7 9.0 0.96 13 11 12 1.1 12 0.098 364.6 0.084 1.17 Yes No Yes SM - Yes No 1.17 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 13 28.5 10 SM 125 3463 3463 3463 0.8 1.3 H 6 1.05 S 8 1.11 1.00 7 10.5 0.97 13 10 12 1.1 11 0.087 402.6 0.076 1.15 Yes No Yes SM - Yes No 1.15 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 14 33.5 10 SP-SM 125 4088 3952 3952 0.7 1.3 H 6 1.05 S 7 1.10 1.00 7 12.0 0.98 13 9 8 1.1 10 0.079 437.1 0.072 1.10 Yes Yes Yes SP-SM - Yes Yes 1.10 Less Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25. 15 38.5 10 SP-SM 125 4713 4265 4265 0.7 1.3 H 6 1.05 S 7 1.10 1.00 7 13.6 0.99 13 9 10 10 1.1 10 0.076 470.0 0.072 1.06 Yes Yes Yes SP-SM Yes Yes Yes Yes 1.06 Less Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25. 16 58.5 36 SM 130 7313 5617 5617 0.6 1.3 H 6 1.05 S 21 1.30 1.00 7 19.7 1.00 47 28 13 13 1.1 30 0.330 587.3 0.068 3.00 No Yes No SM Yes Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. Sample is below liquefaction assessment zone (>50' below LS toe).

DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

55.8 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 9.8 Note: Groundwater Depth Below GS During Drilling (ft.) = 46.0 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.13 Analyzed Groundwater Elevation (ft.)= 24.0 Note: Analyzed Groundwater Depth Below GS (ft.) = 31.8 Energy Ratio = 75 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 1.5 17 CL 125 188 188 188 1.6 1.3 H 8 1.15 S 27 1.30 1.00 7 2.3 0.75 18 29 35 1.2 35 1.226 32.2 0.112 3.00 No No No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 3.5 13 SM 125 438 438 438 1.6 1.3 H 8 1.15 S 21 1.27 1.00 7 2.9 0.75 14 22 38 35 1.2 27 0.537 74.2 0.110 3.00 No No No SM Yes Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 5.5 17 SM 125 688 688 688 1.6 1.3 H 8 1.15 S 27 1.30 1.00 7 3.5 0.75 18 29 12 1.1 31 0.640 115.0 0.109 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 7.5 14 SM 125 938 938 938 1.5 1.3 H 8 1.15 S 20 1.28 1.00 7 4.1 0.79 16 23 12 1.1 25 0.360 154.9 0.107 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 9.5 13 SM 125 1188 1188 1188 1.3 1.3 H 8 1.15 S 17 1.23 1.00 7 4.7 0.82 15 20 12 1.1 22 0.264 193.6 0.106 2.49 No No Yes SM - Yes No 2.49 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 11.5 19 SM 125 1438 1438 1438 1.2 1.3 H 8 1.15 S 22 1.30 1.00 7 5.3 0.85 23 28 12 1.1 29 0.453 225.7 0.102 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 13.5 14 SM 125 1688 1688 1688 1.1 1.3 H 8 1.15 S 15 1.22 1.00 7 5.9 0.88 18 19 12 1.1 21 0.227 251.7 0.097 2.34 No No Yes SM - Yes No 2.34 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 8 15.5 20 ML 125 1938 1938 1938 1.0 1.3 H 8 1.15 S 20 1.30 1.00 7 6.6 0.90 26 26 35 1.2 32 0.497 276.0 0.093 3.00 No No No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 9 17.5 16 ML 125 2188 2188 2188 1.0 1.3 H 8 1.15 S 15 1.23 1.00 7 7.2 0.92 21 20 35 1.2 25 0.284 294.9 0.088 3.00 No No No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 10 21 3 SC 115 2590 2590 2590 0.9 1.3 H 8 1.15 S 3 1.10 1.00 7 8.2 0.94 4 4 48 35 1.6 6 0.065 325.5 0.082 0.80 Yes No Yes SC 30 11 No No No 0.80 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 11 24.5 2 SP-SM 115 2993 2993 2993 0.8 1.3 H 8 1.15 S 2 1.10 1.00 7 9.3 0.96 3 2 8 1.2 3 0.050 349.8 0.076 0.66 Yes No Yes SP-SM - Yes No 0.66 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 12 28 6 SP-SM 115 3395 3395 3395 0.8 1.3 H 8 1.15 S 5 1.10 1.00 7 10.4 0.97 8 6 8 1.1 7 0.066 374.1 0.072 0.92 Yes No Yes SP-SM - Yes No 0.92 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 13 32 9 SM 125 3895 3895 3883 0.7 1.3 H 8 1.15 S 6 1.10 1.00 7 11.6 0.98 13 9 17 17 1.2 11 0.083 400.4 0.067 1.24 Yes Yes Yes SM Yes Yes Yes Yes 1.24 Less Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25. 14 35 31 GP 130 4285 4285 4085 0.7 1.3 H 8 1.15 SCAL 21 1.30 0.65 7 12.5 0.99 29 19 20 20 1.1 22 0.195 419.0 0.067 2.93 No Yes Yes GP Yes Yes Yes No 2.93 Non-Liquefiable Non-Liquefiable. FSL>1.25. 15 38 53 GP 130 4675 4675 4288 0.7 1.3 H 8 1.15 SCAL 35 1.30 0.65 7 13.4 0.99 49 32 5 1.0 33 0.434 437.5 0.066 3.00 No Yes No GP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 16 41.5 50 GP 130 5130 5130 4525 0.6 1.3 H 8 1.15 SCAL 31 1.30 0.65 7 14.5 0.99 46 29 5 1.0 30 0.337 458.6 0.066 3.00 No Yes No GP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 17 45.5 38 GP 130 5650 5650 4795 0.6 1.3 H 8 1.15 SCAL 23 1.30 0.65 7 15.7 0.99 35 21 5 1.0 22 0.181 481.3 0.065 2.77 No Yes Yes GP - Yes No 2.77 Non-Liquefiable Non-Liquefiable. FSL>1.25. 18 49 71 SP 130 6105 5918 5032 0.6 1.3 H 8 1.15 SCAL 41 1.30 0.65 7 16.8 1.00 66 38 4 0 1.0 38 0.627 500.7 0.065 3.00 No Yes No SP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 19 52.5 58 SP 130 6560 6154 5268 0.6 1.3 H 8 1.15 SCAL 33 1.30 0.65 7 17.8 1.00 54 31 3 0 1.0 31 0.350 519.7 0.064 3.00 No Yes No SP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 20 59 52 SP 130 7405 6594 5708 0.6 1.3 H 8 1.15 SCAL 29 1.30 0.65 7 19.8 1.00 49 27 5 1.0 28 0.267 553.5 0.063 3.00 No Yes No SP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 21 63 62 SP 130 7925 6864 5978 0.5 1.3 H 8 1.15 S 33 1.30 1.00 7 21.0 1.00 89 48 3 0 1.0 48 1.233 573.0 0.062 3.00 No Yes No SP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is below liquefaction assessment zone (>50' below LS toe).

DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

Data Input By Analyst
American River (North Bank) Results of Analysis
DWR Urban Levee Evaluations Program
K. Atyam
E. Julian
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3360+71
PROJECT NUMBER: 17326660
From 2F-97-14
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest
Boring ID: Likely Liquefiable
Conclusions and Comments
4/24/2014
Drilled Aug. 1997
2F-97-14
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
5/1/2014
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/AMRVGERCF1TLiqSpd_NB/2F-97-14_V1.3SPT Based Liquefaction 9/10/2024
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

30.0 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 19.0 Note: Groundwater Depth Below GS During Drilling (ft.) = 11.0 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 16.1 Note: Analyzed Groundwater Depth Below GS (ft.) = 13.9 Energy Ratio = 75 Mw = 6.5 Location = WatersideEnter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 3.5 4 ML 115 403 403 403 1.6 1.3 Air 4 1.00 S 6 1.10 1.00 7 2.9 0.75 4 6 35 1.4 9 0.135 76.0 0.123 1.10 Yes No Yes ML - Yes No 1.10 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 6.5 24 CL 125 778 778 778 1.6 1.3 Air 4 1.00 S 38 1.30 1.00 7 3.8 0.76 23 37 50 35 1.2 44 1.548 135.2 0.113 3.00 No No No CL 33 16 No No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 9.5 17 SC 125 1153 1153 1153 1.3 1.3 Air 4 1.00 S 22 1.28 1.00 7 4.7 0.82 18 23 12 1.1 25 0.339 188.9 0.107 3.00 No No No SC - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 12.5 19 SP-SM 125 1528 1434 1528 1.2 1.3 Air 4 1.00 S 22 1.30 1.00 7 5.6 0.87 21 24 9 9 1.1 26 0.336 237.0 0.101 3.00 No No No SP-SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 15.5 16 SP 125 1903 1622 1800 1.1 1.3 M 4 1.00 S 18 1.24 1.00 7 6.6 0.90 18 20 5 1.0 21 0.220 279.5 0.101 2.18 No Yes Yes SP - Yes No 2.18 Non-Liquefiable Non-Liquefiable. FSL>1.25. 6 18.5 30 SC 130 2293 1825 2003 1.0 1.3 M 4 1.00 S 31 1.30 1.00 7 7.5 0.93 35 36 12 1.1 39 0.829 317.6 0.103 3.00 No Yes No SC - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 7 21.5 13 SP-SC 125 2668 2012 2191 1.0 1.3 M 4 1.00 S 13 1.17 1.00 7 8.4 0.95 15 15 12 12 1.1 17 0.154 355.0 0.105 1.46 No Yes Yes SP-SC 21 6 Yes Yes No 1.46 Non-Liquefiable Non-Liquefiable. FSL>1.25. 8 24.5 10 CL 125 3043 2200 2379 1.0 1.3 M 4 1.00 S 10 1.13 1.00 7 9.3 0.96 12 11 35 1.3 15 0.131 392.1 0.107 1.22 Yes Yes Yes CL - No No 1.22 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 9 27.5 13 CL 125 3418 2388 2566 0.9 1.3 M 4 1.00 S 12 1.16 1.00 7 10.2 0.97 16 14 35 1.3 18 0.166 428.1 0.108 1.53 No Yes Yes CL - No No 1.53 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 10 30.5 43 CL 125 3793 2576 2754 0.9 1.3 M 4 1.00 S 38 1.30 1.00 7 11.1 0.98 53 46 35 1.2 55 2.482 461.5 0.109 3.00 No Yes No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 11 33.5 17 SM 125 4168 2764 2942 0.9 1.3 M 4 1.00 S 14 1.20 1.00 7 12.0 0.98 21 18 44 35 1.2 22 0.212 492.3 0.109 1.95 No Yes Yes SM Yes Yes Yes No 1.95 Non-Liquefiable Non-Liquefiable. FSL>1.25. 12 36.5 26 ML 125 4543 2951 3130 0.8 1.3 M 4 1.00 S 21 1.30 1.00 7 13.0 0.99 32 26 35 1.2 32 0.437 519.3 0.108 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 13 39.5 100 ML 125 4918 3139 3318 0.8 1.3 M 4 1.00 S 80 1.30 1.00 7 13.9 0.99 124 99 35 1.2 114 211.587 543.2 0.106 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 14 42.5 100 ML 125 5293 3327 3505 0.8 1.3 M 4 1.00 S 78 1.30 1.00 7 14.8 0.99 124 96 87 35 1.2 111 166.837 565.1 0.105 3.00 No Yes No ML 26 3 Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 15 45.5 100 CL 125 5668 3515 3693 0.8 1.3 M 4 1.00 S 75 1.30 1.00 7 15.7 0.99 124 94 35 1.2 109 133.472 585.5 0.103 3.00 No Yes No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 16 50.5 21 SM 125 6293 3828 4006 0.7 1.3 M 4 1.00 S 15 1.22 1.00 7 17.2 1.00 26 19 12 1.1 20 0.173 616.6 0.100 1.73 No Yes Yes SM - Yes No 1.73 Non-Liquefiable Non-Liquefiable. Sample is below liquefaction assessment zone (>50' below LS toe).

Conclusions and Comments
2/26/2014
Drilled Dec. 1998
2F-99-01A
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
4/8/2014
PROJECT NUMBER: 17326660
From 2F-99-01A
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Waterside Toe
Boring ID: Likely Liquefiable
American River (North Bank)
DWR Urban Levee Evaluations Program
H. Hayati
T. Kanax
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3053+49
DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

34.5 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 13.5 Note: Groundwater Depth Below GS During Drilling (ft.) = 21.0 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 17.5 Note: Analyzed Groundwater Depth Below GS (ft.) = 17.0 Energy Ratio = 75 Mw = 6.5 Location = WatersideEnter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 3.5 7 SM 115 403 403 403 1.6 1.3 M 4 1.00 S 11 1.12 1.00 7 2.9 0.75 7 11 12 1.1 12 0.169 76.0 0.123 1.38 No No Yes SM - Yes No 1.38 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 6.5 8 ML 120 763 763 763 1.6 1.3 M 4 1.00 S 13 1.14 1.00 7 3.8 0.76 8 12 35 1.3 16 0.192 135.2 0.115 1.67 No No Yes ML - Yes No 1.67 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 9.5 9 SC-SM 115 1108 1108 1108 1.3 1.3 M 4 1.00 S 12 1.14 1.00 7 4.7 0.82 9 12 38 35 1.3 16 0.177 188.9 0.111 1.60 No No Yes SC-SM 28 7 Yes Yes No 1.60 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 12.5 21 ML 125 1483 1483 1483 1.2 1.3 M 4 1.00 S 24 1.30 1.00 7 5.6 0.87 23 26 35 1.2 32 0.541 237.0 0.104 3.00 No No No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 15.5 8 ML 125 1858 1858 1858 1.0 1.3 M 4 1.00 S 8 1.10 1.00 7 6.6 0.90 9 9 35 1.3 12 0.117 279.5 0.098 1.20 Yes No Yes ML - Yes No 1.20 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 18.5 11 ML 125 2233 2233 2139 0.9 1.3 M 4 1.00 S 10 1.13 1.00 7 7.5 0.93 13 12 35 1.3 15 0.142 317.6 0.097 1.47 No Yes Yes ML - Yes No 1.47 Non-Liquefiable Non-Liquefiable. FSL>1.25. 7 21.5 11 ML 125 2608 2576 2327 0.9 1.3 M 4 1.00 S 10 1.13 1.00 7 8.4 0.95 13 11 35 1.3 15 0.132 355.0 0.099 1.33 No Yes Yes ML - Yes No 1.33 Non-Liquefiable Non-Liquefiable. FSL>1.25. 8 24.5 10 SC-SM 125 2983 2764 2515 0.9 1.3 M 4 1.00 S 9 1.11 1.00 7 9.3 0.96 12 10 43 35 1.3 13 0.116 392.1 0.101 1.14 Yes Yes Yes SC-SM 24 5 Yes Yes Yes 1.14 Less Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25. 9 27.5 27 ML 125 3358 2952 2702 0.8 1.3 M 4 1.00 S 22 1.30 1.00 7 10.2 0.97 33 27 35 1.2 32 0.476 428.1 0.103 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 10 30.5 38 CL 125 3733 3140 2890 0.8 1.3 M 4 1.00 S 30 1.30 1.00 7 11.1 0.98 46 37 35 1.2 44 1.111 461.5 0.104 3.00 No Yes No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 11 35.5 23 SP-SM 125 4358 3453 3203 0.8 1.3 M 4 1.00 S 18 1.25 1.00 7 12.6 0.99 28 22 8 8 1.1 23 0.218 511.0 0.104 2.10 No Yes Yes SP-SM Yes Yes Yes No 2.10 Non-Liquefiable Non-Liquefiable. FSL>1.25. 12 40.5 67 ML 125 4983 3766 3516 0.7 1.3 M 4 1.00 S 49 1.30 1.00 7 14.2 0.99 83 61 35 1.2 71 7.836 550.7 0.102 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 13 45.5 100 ML 125 5608 4079 3829 0.7 1.3 M 4 1.00 S 70 1.30 1.00 7 15.7 0.99 124 87 56 35 1.2 101 74.305 585.5 0.099 3.00 No Yes No ML 23 3 Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 14 50.5 100 SM 130 6258 4417 4167 0.7 1.3 M 4 1.00 S 67 1.30 1.00 7 17.2 1.00 125 84 46 35 1.2 97 55.063 616.6 0.096 3.00 No Yes No SM Yes Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. Sample is below liquefaction assessment zone (>50' below LS toe).

DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

Data Input By Analyst
American River (North Bank) Results of Analysis
DWR Urban Levee Evaluations Program
K. Atyam
E. Julian
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3151+12
PROJECT NUMBER: 17326660
From 2F-99-04A
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Waterside toe
Boring ID: Likely Liquefiable
Conclusions and Comments
4/24/2014
Drilled Dec. 1998
2F-99-04A
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
5/1/2014
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/AMRVGERCF1TLiqSpd_NB/2F-99-04A_V1.3SPT Based Liquefaction 9/10/2024
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

39.3 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 12.3 Note: Groundwater Depth Below GS During Drilling (ft.) = 27.0 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 18.0 Note: Analyzed Groundwater Depth Below GS (ft.) = 21.3 Energy Ratio = 75 Mw = 6.5 Location = WatersideEnter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 3.5 7 ML 120 420 420 420 1.6 1.3 SFA 4 1.00 S 11 1.12 1.00 7 2.9 0.75 7 11 35 1.3 14 0.196 76.0 0.118 1.67 No No Yes ML - Yes No 1.67 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 6.5 3 ML 115 765 765 765 1.6 1.3 SFA 4 1.00 S 5 1.10 1.00 7 3.8 0.76 3 5 35 1.5 7 0.100 135.2 0.115 0.87 Yes No Yes ML - Yes No 0.87 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 9.5 6 ML 120 1125 1125 1125 1.3 1.3 SFA 4 1.00 S 8 1.10 1.00 7 4.7 0.82 6 8 35 1.4 11 0.123 188.9 0.109 1.13 Yes No Yes ML - Yes No 1.13 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 12.5 5 ML 120 1485 1485 1485 1.2 1.3 SFA 4 1.00 S 6 1.10 1.00 7 5.6 0.87 5 6 35 1.4 9 0.096 237.0 0.104 0.93 Yes No Yes ML - Yes No 0.93 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 15.5 8 ML 125 1860 1860 1860 1.0 1.3 SFA 4 1.00 S 8 1.10 1.00 7 6.6 0.90 9 9 35 1.3 12 0.117 279.5 0.098 1.20 Yes No Yes ML - Yes No 1.20 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 18.5 11 SM 125 2235 2235 2235 0.9 1.3 SFA 4 1.00 S 10 1.13 1.00 7 7.5 0.93 13 12 12 1.1 13 0.119 317.6 0.092 1.29 No No Yes SM - Yes No 1.29 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 21.5 7 SM 115 2580 2580 2566 0.9 1.3 SFA 4 1.00 S 6 1.10 1.00 7 8.4 0.95 8 7 40 35 1.4 10 0.090 355.0 0.090 1.00 Yes Yes Yes SM Yes Yes Yes Yes 1.00 Likely Liquefiable Likely Liquefiable. FSL=1.0. 8 24.5 6 SM 115 2925 2925 2724 0.8 1.3 SFA 4 1.00 S 5 1.10 1.00 7 9.3 0.96 7 6 12 1.1 7 0.069 392.1 0.094 0.74 Yes Yes Yes SM - Yes Yes 0.74 Likely Liquefiable Likely Liquefiable. FSL<1.0. 9 27.5 19 SM 125 3300 3269 2912 0.8 1.3 SFA 4 1.00 S 15 1.21 1.00 7 10.2 0.97 23 18 15 15 1.1 20 0.181 428.1 0.096 1.89 No Yes Yes SM - Yes No 1.89 Non-Liquefiable Non-Liquefiable. FSL>1.25. 10 30.5 37 GP-GM 130 3690 3472 3115 0.8 1.3 SFA 4 1.00 S 28 1.30 1.00 7 11.1 0.98 45 34 8 1.0 36 0.589 461.5 0.096 3.00 No Yes No GP-GM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 11 35.5 26 GP-GM 130 4340 3810 3453 0.7 1.3 Air 4 1.00 SCAL 19 1.28 0.65 7 12.6 0.99 21 15 11 11 1.1 16 0.132 511.0 0.096 1.37 No Yes Yes GP-GM - Yes No 1.37 Non-Liquefiable Non-Liquefiable. FSL>1.25. 12 40.5 46 SP 130 4990 4148 3791 0.7 1.3 Air 4 1.00 SCAL 32 1.30 0.65 7 14.2 0.99 37 26 5 1.0 26 0.277 550.7 0.094 2.93 No Yes No SP - Yes No 2.93 Non-Liquefiable Non-Liquefiable. FSL>1.25. 13 44.5 77 ML 125 5490 4398 4041 0.7 1.3 Air 4 1.00 SCAL 52 1.30 0.65 7 15.4 0.99 62 42 93 35 1.2 50 1.539 578.8 0.093 3.00 No Yes No ML 44 13 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaciton. 14 50.5 49 MH 125 6240 4774 4417 0.6 1.3 M 4 1.00 S 32 1.30 1.00 7 17.2 1.00 61 40 98 35 1.2 47 1.220 616.6 0.091 3.00 No Yes No MH 54 21 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. Sample is below liquefaction assessment zone (>50' below LS toe).

DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

Data Input By Analyst
American River (North Bank) Results of Analysis
DWR Urban Levee Evaluations Program
H. Hayati
T. Kanax
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3190+46
PROJECT NUMBER: 17326660
From 2F-99-06A
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Waterside Toe
Boring ID: Likely Liquefiable
Conclusions and Comments
2/26/2014
Drilled Dec. 1998
2F-99-06A
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
4/8/2014
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/AMRVGERCF1TLiqSpd_NB/2F-99-06A_V1.3SPT Based Liquefaction 9/10/2024
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

44.2 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 22.7 Note: Groundwater Depth Below GS During Drilling (ft.) = 21.5 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 20.6 Note: Analyzed Groundwater Depth Below GS (ft.) = 23.6 Energy Ratio = 75 Mw = 6.5 Location = WatersideEnter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 3.5 7 SM 115 403 403 403 1.6 1.3 Air 4 1.00 S 11 1.12 1.00 7 2.9 0.75 7 11 12 1.1 12 0.169 76.0 0.123 1.38 No No Yes SM - Yes No 1.38 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 6.5 5 SM 115 748 748 748 1.6 1.3 Air 4 1.00 S 8 1.10 1.00 7 3.8 0.76 5 8 12 1.1 9 0.114 135.2 0.118 0.97 Yes No Yes SM - Yes No 0.97 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 9.5 5 SM 115 1093 1093 1093 1.4 1.3 Air 4 1.00 S 7 1.10 1.00 7 4.7 0.82 5 7 12 1.1 8 0.097 188.9 0.112 0.86 Yes No Yes SM - Yes No 0.86 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 12.5 5 SM 115 1438 1438 1438 1.2 1.3 Air 4 1.00 S 6 1.10 1.00 7 5.6 0.87 5 6 12 1.1 7 0.086 237.0 0.107 0.80 Yes No Yes SM - Yes No 0.80 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 15.5 3 SM 115 1783 1783 1783 1.1 1.3 Air 4 1.00 S 3 1.10 1.00 7 6.6 0.90 3 4 43 35 1.6 6 0.072 279.5 0.102 0.71 Yes No Yes SM Yes Yes Yes No 0.71 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 18.5 5 SM 115 2128 2128 2128 1.0 1.3 Air 4 1.00 S 5 1.10 1.00 7 7.5 0.93 6 6 12 1.2 6 0.072 317.6 0.097 0.74 Yes No Yes SM - Yes No 0.74 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 21.5 2 SM 115 2473 2473 2473 0.9 1.3 Air 4 1.00 S 2 1.10 1.00 7 8.4 0.95 2 2 19 19 1.5 3 0.054 355.0 0.093 0.58 Yes No Yes SM Yes Yes Yes No 0.58 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 8 24.5 16 SP 125 2848 2660 2791 0.9 1.3 Air 4 1.00 S 14 1.19 1.00 7 9.3 0.96 19 17 5 1.0 17 0.150 392.1 0.091 1.64 No Yes Yes SP - Yes No 1.64 Non-Liquefiable Non-Liquefiable. FSL>1.25. 9 27.5 45 GP 130 3238 2863 2994 0.8 1.3 Air 4 1.00 SCAL 38 1.30 0.65 7 10.2 0.97 35 30 5 1.0 30 0.399 428.1 0.093 3.00 No Yes No GP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 10 30.5 62 GP 130 3628 3066 3197 0.8 1.3 Air 4 1.00 SCAL 50 1.30 0.65 7 11.1 0.98 49 40 5 1.0 41 0.851 461.5 0.094 3.00 No Yes No GP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 11 35.5 23 CL-ML 125 4253 3379 3510 0.8 1.3 Air 4 1.00 S 18 1.26 1.00 7 12.6 0.99 28 22 51 35 1.2 27 0.286 511.0 0.095 3.00 No Yes No CL-ML 24 5 Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 12 40.5 25 ML 125 4878 3692 3823 0.7 1.3 M 4 1.00 S 18 1.27 1.00 7 14.2 0.99 31 23 99 35 1.2 28 0.304 550.7 0.094 3.00 No Yes No ML 46 16 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 13 45.5 34 ML 125 5503 4005 4136 0.7 1.3 M 4 1.00 S 24 1.30 1.00 7 15.7 0.99 42 30 35 1.2 36 0.544 585.5 0.092 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 14 50.5 114 ML 125 6128 4318 4449 0.7 1.3 M 4 1.00 S 78 1.30 1.00 7 17.2 1.00 142 97 68 35 1.2 112 162.062 616.6 0.090 3.00 No Yes No ML 27 3 Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 15 55.5 76 SM 130 6778 4656 4787 0.7 1.3 M 4 1.00 S 50 1.30 1.00 7 18.7 1.00 95 62 13 13 1.1 66 5.050 644.2 0.087 3.00 No Yes No SM Yes Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. Sample is below liquefaction assessment zone (>50' below LS toe).

Conclusions and Comments
2/26/2014
Drilled Dec. 1998
2F-99-08A
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
4/8/2014
PROJECT NUMBER: 17326660
From 2F-99-08A
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Waterside
Boring ID: Likely Liquefiable
American River (North Bank)
DWR Urban Levee Evaluations Program
H. Hayati
T. Kanax
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3279+16
DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

47.6 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 12.6 Note: Groundwater Depth Below GS During Drilling (ft.) = 35.0 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.13 Analyzed Groundwater Elevation (ft.)= 25.6 Note: Analyzed Groundwater Depth Below GS (ft.) = 22.0 Energy Ratio = 75 Mw = 6.5 Location = WatersideEnter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 3.5 11 SM 115 403 403 403 1.6 1.3 Air 4 1.00 S 18 1.19 1.00 7 2.9 0.75 10 17 12 1.1 18 0.271 72.0 0.116 2.33 No No Yes SM - Yes No 2.33 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 6.5 4 SM 115 748 748 748 1.6 1.3 Air 4 1.00 S 6 1.10 1.00 7 3.8 0.76 4 6 12 1.1 7 0.101 128.0 0.111 0.91 Yes No Yes SM - Yes No 0.91 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 9.5 8 SP-SM 115 1093 1093 1093 1.4 1.3 Air 4 1.00 S 11 1.12 1.00 7 4.7 0.82 8 11 8 8 1.1 12 0.131 178.5 0.106 1.23 Yes No Yes SP-SM Yes Yes Yes No 1.23 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 12.5 13 SM 125 1468 1468 1468 1.2 1.3 Air 4 1.00 S 15 1.19 1.00 7 5.6 0.87 14 16 12 1.1 18 0.189 223.7 0.099 1.91 No No Yes SM - Yes No 1.91 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 15.5 15 SM 125 1843 1843 1843 1.0 1.3 Air 4 1.00 S 16 1.20 1.00 7 6.6 0.90 17 18 12 1.1 19 0.194 263.4 0.093 2.09 No No Yes SM - Yes No 2.09 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 18.5 31 GP-GM 130 2233 2233 2233 0.9 1.3 Air 4 1.00 S 29 1.30 1.00 7 7.5 0.93 36 34 12 12 1.1 36 0.666 299.1 0.087 3.00 No No No GP-GM Yes Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 21.5 119 GP-GM 130 2623 2623 2623 0.9 1.3 Air 4 1.00 SCAL 104 1.30 0.65 7 8.4 0.95 91 80 8 1.0 83 20.992 334.3 0.083 3.00 No No No GP-GM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 8 25.5 100 GP-GM 130 3143 3143 2924 0.8 1.3 Air 4 1.00 SCAL 80 1.30 0.65 7 9.6 0.96 78 62 6 6 1.0 64 5.057 380.8 0.085 3.00 No Yes No GP-GM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 9 30.5 205 GP 130 3793 3793 3262 0.7 1.3 Air 4 1.00 SCAL 149 1.30 0.65 7 11.1 0.98 163 118 5 1.0 121 343.772 435.5 0.087 3.00 No Yes No GP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 10 35.5 19 SM 125 4418 4386 3575 0.7 1.3 Air 4 1.00 S 13 1.18 1.00 7 12.6 0.99 23 16 12 1.1 17 0.140 483.1 0.088 1.59 No Yes Yes SM - Yes No 1.59 Non-Liquefiable Non-Liquefiable. FSL>1.25. 11 40.5 33 SM 130 5068 4724 3913 0.7 1.3 M 4 1.00 S 21 1.30 1.00 7 14.2 0.99 41 27 31 31 1.2 31 0.399 520.9 0.087 3.00 No Yes No SM Yes Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 12 45.5 22 ML 125 5693 5037 4226 0.6 1.3 M 4 1.00 S 14 1.20 1.00 7 15.7 0.99 27 17 35 1.2 21 0.183 553.4 0.085 2.15 No Yes Yes ML - Yes No 2.15 Non-Liquefiable Non-Liquefiable. FSL>1.25. 13 50.5 50 SM 130 6343 5375 4564 0.6 1.3 M 4 1.00 S 30 1.30 1.00 7 17.2 1.00 62 38 35 35 1.2 45 1.061 583.0 0.083 3.00 No Yes No SM 40 10 No Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 14 55.5 81 ML 125 6968 5688 4877 0.6 1.3 M 4 1.00 S 48 1.30 1.00 7 18.7 1.00 101 60 35 1.2 70 6.801 609.3 0.081 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. Sample is below liquefaction assessment zone (>50' below LS toe).

DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

Data Input By Analyst
American River (North Bank) Results of Analysis
DWR Urban Levee Evaluations Program
H. Hayati
T. Kanax
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3397+21
PROJECT NUMBER: 17326660
From 2F-99-09A
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Waterside Toe
Boring ID: Likely Liquefiable
Conclusions and Comments
2/26/2014
Drilled Dec. 1998
2F-99-09A
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
4/8/2014
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/AMRVGERCF1TLiqSpd_NB/2F-99-09A_V1.3SPT Based Liquefaction 9/10/2024
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

48.4 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 18.4 Note: Groundwater Depth Below GS During Drilling (ft.) = 30.0 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.13 Analyzed Groundwater Elevation (ft.)= 27.4 Note: Analyzed Groundwater Depth Below GS (ft.) = 21.0 Energy Ratio = 75 Mw = 6.5 Location = WatersideEnter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 3.5 4 SM 115 403 403 403 1.6 1.3 Air 4 1.00 S 6 1.10 1.00 7 2.9 0.75 4 6 12 1.1 7 0.119 72.0 0.116 1.02 Yes No Yes SM - Yes No 1.02 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 6.5 6 SP-SM 115 748 748 748 1.6 1.3 Air 4 1.00 S 10 1.10 1.00 7 3.8 0.76 6 9 8 1.1 10 0.125 128.0 0.111 1.12 Yes No Yes SP-SM - Yes No 1.12 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 9.5 5 SP 115 1093 1093 1093 1.4 1.3 Air 4 1.00 S 7 1.10 1.00 7 4.7 0.82 5 7 5 1.1 7 0.093 178.5 0.106 0.88 Yes No Yes SP - Yes No 0.88 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 12.5 4 SM 115 1438 1438 1438 1.2 1.3 Air 4 1.00 S 5 1.10 1.00 7 5.6 0.87 4 5 15 15 1.2 6 0.079 223.7 0.101 0.78 Yes No Yes SM - Yes No 0.78 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 15.5 40 GP-GM 130 1828 1828 1828 1.0 1.3 Air 4 1.00 S 42 1.30 1.00 7 6.6 0.90 45 47 8 1.0 49 1.850 263.4 0.094 3.00 No No No GP-GM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 20.5 178 GP 130 2478 2478 2478 0.9 1.3 Air 4 1.00 SCAL 160 1.30 0.65 7 8.1 0.94 136 122 5 1.0 125 500.300 322.3 0.085 3.00 No No No GP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 25.5 150 GP 130 3128 3128 2846 0.8 1.3 Air 4 1.00 SCAL 120 1.30 0.65 7 9.6 0.96 117 94 5 1.0 96 55.309 380.8 0.087 3.00 No Yes No GP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 8 30.5 163 GP 130 3778 3746 3184 0.7 1.3 Air 4 1.00 SCAL 119 1.30 0.65 7 11.1 0.98 129 95 5 1.0 97 56.623 435.5 0.089 3.00 No Yes No GP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 9 35.5 22 CL 125 4403 4059 3497 0.7 1.3 Air 4 1.00 S 15 1.22 1.00 7 12.6 0.99 27 19 35 1.2 23 0.225 483.1 0.090 2.51 No Yes No CL - No No 2.51 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 10 40.5 12 CL 125 5028 4372 3810 0.7 1.3 M 4 1.00 S 8 1.11 1.00 7 14.2 0.99 15 10 93 35 1.3 13 0.102 520.9 0.089 1.15 Yes Yes Yes CL 48 25 No No No 1.15 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 11 45.5 11 SM 125 5653 4685 4123 0.7 1.3 M 4 1.00 S 7 1.10 1.00 7 15.7 0.99 14 9 34 34 1.3 12 0.090 553.4 0.087 1.03 Yes Yes Yes SM Yes Yes Yes Yes 1.03 Less Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25. 12 50.5 24 SP-SM 130 6303 5023 4461 0.6 1.3 M 4 1.00 S 15 1.22 1.00 7 17.2 1.00 30 19 7 7 1.0 20 0.160 583.0 0.085 1.88 No Yes Yes SP-SM Yes Yes Yes No 1.88 Non-Liquefiable Non-Liquefiable. FSL>1.25. Sample is below liquefaction assessment zone (>50' below LS toe).

DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

Data Input By Analyst
American River (North Bank) Results of Analysis
DWR Urban Levee Evaluations Program
H. Hayati
T. Kanax
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3449+67
PROJECT NUMBER: 17326660
From 2F-99-11A
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Waterside Toe
Boring ID: Likely Liquefiable
Conclusions and Comments
2/26/2014
Drilled Dec. 1998
2F-99-11A
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
4/8/2014
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/AMRVGERCF1TLiqSpd_NB/2F-99-11A_V1.3SPT Based Liquefaction 9/10/2024
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

53.7 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 19.2 Note: Groundwater Depth Below GS During Drilling (ft.) = 34.5 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.13 Analyzed Groundwater Elevation (ft.)= 27.9 Note: Analyzed Groundwater Depth Below GS (ft.) = 25.8 Energy Ratio = 75 Mw = 6.5 Location = WatersideEnter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 3.5 4 ML 115 403 403 403 1.6 1.3 H 4 1.00 S 6 1.10 1.00 7 2.9 0.75 4 6 35 1.4 9 0.135 72.0 0.116 1.16 Yes No Yes ML - Yes No 1.16 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 6.5 6 SM 115 748 748 748 1.6 1.3 H 4 1.00 S 10 1.10 1.00 7 3.8 0.76 6 9 12 1.1 10 0.128 128.0 0.111 1.15 Yes No Yes SM - Yes No 1.15 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 9.5 5 SM 115 1093 1093 1093 1.4 1.3 H 4 1.00 S 7 1.10 1.00 7 4.7 0.82 5 7 12 1.1 8 0.097 178.5 0.106 0.91 Yes No Yes SM - Yes No 0.91 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 12.5 6 SM 115 1438 1438 1438 1.2 1.3 H 4 1.00 S 7 1.10 1.00 7 5.6 0.87 7 8 12 1.1 9 0.095 223.7 0.101 0.94 Yes No Yes SM - Yes No 0.94 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 15.5 6 SM 115 1783 1783 1783 1.1 1.3 H 4 1.00 S 6 1.10 1.00 7 6.6 0.90 7 7 12 1.1 8 0.086 263.4 0.096 0.90 Yes No Yes SM - Yes No 0.90 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 18.5 8 SM 115 2128 2128 2128 1.0 1.3 H 4 1.00 S 8 1.10 1.00 7 7.5 0.93 9 9 20 20 1.2 11 0.099 299.1 0.091 1.08 Yes No Yes SM Yes Yes Yes No 1.08 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 21.5 7 SM 115 2473 2473 2473 0.9 1.3 H 4 1.00 S 6 1.10 1.00 7 8.4 0.95 8 7 12 1.1 8 0.080 334.3 0.088 0.91 Yes No Yes SM - Yes No 0.91 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 8 24.5 59 SM 130 2863 2863 2863 0.8 1.3 H 4 1.00 S 49 1.30 1.00 7 9.3 0.96 71 59 12 1.1 63 4.495 369.3 0.084 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 9 27 110 GP-GM 130 3188 3188 3113 0.8 1.3 H 4 1.00 SCAL 87 1.30 0.65 7 10.1 0.97 87 69 8 1.0 71 8.348 397.9 0.083 3.00 No Yes No GP-GM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 10 30 100 GP-GM 130 3578 3578 3315 0.7 1.3 H 4 1.00 SCAL 75 1.30 0.65 7 11.0 0.98 79 59 8 1.0 62 4.012 430.3 0.084 3.00 No Yes No GP-GM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 11 35 163 GP 130 4228 4196 3653 0.7 1.3 H 4 1.00 SCAL 113 1.30 0.65 7 12.5 0.99 130 90 5 1.0 92 38.685 479.1 0.085 3.00 No Yes No GP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 12 40.5 6 ML 120 4888 4513 3970 0.7 1.3 H 4 1.00 S 4 1.10 1.00 7 14.2 0.99 7 5 66 35 1.5 7 0.065 520.9 0.085 0.76 Yes Yes Yes ML 28 5 Yes Yes Yes 0.76 Likely Liquefiable Likely Liquefiable. FSL<1.0. 13 45.5 11 SM 125 5513 4826 4283 0.6 1.3 H 4 1.00 S 7 1.10 1.00 7 15.7 0.99 14 9 12 1.1 10 0.077 553.4 0.084 0.92 Yes Yes Yes SM - Yes Yes 0.92 Likely Liquefiable Likely Liquefiable. FSL<1.0. 14 50.5 20 SM 125 6138 5139 4596 0.6 1.3 H 4 1.00 S 12 1.17 1.00 7 17.2 1.00 25 16 16 16 1.1 17 0.132 583.0 0.082 1.60 No Yes Yes SM Yes Yes Yes No 1.60 Non-Liquefiable Non-Liquefiable. FSL>1.25. Sample is below liquefaction assessment zone (>50' below LS toe).

DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

Data Input By Analyst
American River (North Bank) Results of Analysis
DWR Urban Levee Evaluations Program
K. Atyam
E. Julian
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3468+33
PROJECT NUMBER: 17326660
From 2F-99-12A
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Waterside Toe
Boring ID: Likely Liquefiable
Conclusions and Comments
4/24/2014
Drilled Dec. 1998
2F-99-12A
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
5/1/2014
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/AMRVGERCF1TLiqSpd_NB/2F-99-12A_V1.3SPT Based Liquefaction 9/10/2024
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

53.0 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 21.8 Note: Groundwater Depth Below GS During Drilling (ft.) = 31.2 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 21.8 Note: Analyzed Groundwater Depth Below GS (ft.) = 31.2 Energy Ratio = 83 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) S04 5.5 22 ML 125 688 688 688 1.6 1.4 H 8 1.15 S 35 1.30 1.00 7 3.5 0.75 26 42 52 35 1.2 50 2.529 122.1 0.115 3.00 No No No ML 16 Yes Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S06 10.5 20 ML 125 1313 1313 1313 1.2 1.4 M 5 1.02 S 25 1.30 1.00 7 5.0 0.84 24 29 35 1.2 35 0.711 226.0 0.112 3.00 No No No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S08 15.5 12 SM 125 1938 1938 1938 1.0 1.4 M 5 1.02 S 12 1.17 1.00 7 6.6 0.90 15 16 42 35 1.3 19 0.197 292.6 0.098 2.01 No No Yes SM 20 - Yes No 2.01 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S10 20.5 12 SM 125 2563 2563 2563 0.9 1.4 M 5 1.02 S 11 1.16 1.00 7 8.1 0.94 16 14 30 30 1.2 17 0.154 341.8 0.087 1.78 No No Yes SM - Yes No 1.78 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S12 25.5 13 ML 125 3188 3188 3188 0.8 1.4 M 5 1.02 S 10 1.15 1.00 7 9.6 0.96 18 14 57 35 1.3 18 0.150 379.8 0.077 1.94 No No Yes ML - Yes No 1.94 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S14 30.5 17 SM 125 3813 3813 3813 0.7 1.4 M 5 1.02 S 12 1.19 1.00 7 11.1 0.98 23 17 12 1.1 18 0.151 417.3 0.071 2.12 No No Yes SM - Yes No 2.12 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S16 35.5 15 SM 125 4438 4166 4166 0.7 1.4 M 5 1.02 S 10 1.16 1.00 7 12.6 0.99 21 14 30 30 1.2 18 0.139 450.2 0.070 1.98 No Yes Yes SM - Yes No 1.98 Non-Liquefiable Non-Liquefiable. FSL>1.25.

S18 40.5 43 GM 130 5088 4504 4504 0.7 1.4 M 5 1.02 S 29 1.30 1.00 7 14.2 0.99 60 40 12 1.1 43 0.886 483.0 0.070 3.00 No Yes No GM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25.

S22 50 150 GP 130 6323 5146 5146 0.6 1.4 M 5 1.02 S 94 1.30 1.00 7 17.1 1.00 211 131 5 1.0 134 837.920 540.2 0.068 3.00 No Yes No GP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25.

S23 55.5 86 CL 125 7010 5491 5491 0.6 1.4 M 5 1.02 S 52 1.30 1.00 7 18.7 1.00 121 73 35 1.2 85 20.321 571.1 0.068 3.00 No Yes No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction.

S25 60.5 60 SM 130 7660 5829 5829 0.6 1.4 M 5 1.02 S 35 1.30 1.00 7 20.3 1.00 85 50 12 1.1 53 1.734 597.7 0.067 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. Sample is below liquefaction assessment zone (>50' below LS toe).

Conclusions and Comments
2/26/2014
Drilled May 2008
WCNBAR_003B
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
4/8/2014
N/A, used Avg. Winter WSE
PROJECT NUMBER: 17326660
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest
Boring ID: Likely Liquefiable
American River (North Bank)
DWR Urban Levee Evaluations Program
H. Hayati
T. Kanax
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3306+35
DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

Data Input By Analyst
Results of Analysis
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/AMRVGERCF1TLiqSpd_NB/WCNBAR_003B_V1.3SPT Based Liquefaction 9/10/2024
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

47.0 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = 14.5 Note: Groundwater Depth Below GS During Drilling (ft.) = 32.5 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 19.1 Note: Analyzed Groundwater Depth Below GS (ft.) = 27.9 Energy Ratio = 81 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 3 24 SM 125 375 375 375 1.6 1.4 H 8 1.15 SCAL 38 1.30 0.65 7 2.7 0.75 18 29 30 30 1.2 34 0.929 67.6 0.117 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 5.5 19 SM 125 688 688 688 1.6 1.4 H 8 1.15 SCAL 30 1.30 0.65 7 3.5 0.75 14 23 45 35 1.2 28 0.498 122.1 0.115 3.00 No No No SM 13 - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 8 24 CL 125 1000 1000 1000 1.4 1.4 H 8 1.15 SCAL 34 1.30 0.65 7 4.3 0.80 19 27 78 35 1.2 33 0.646 174.9 0.114 3.00 No No No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 10.5 24 CL 125 1313 1313 1313 1.2 1.4 H 8 1.15 SCAL 30 1.30 0.65 7 5.0 0.84 20 25 67 35 1.2 30 0.498 226.0 0.112 3.00 No No No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 13 31 ML 125 1625 1625 1625 1.1 1.4 H 8 1.15 SCAL 34 1.30 0.65 7 5.8 0.87 27 30 35 1.2 36 0.735 260.2 0.104 3.00 No No No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 15.5 36 ML 125 1938 1938 1938 1.0 1.4 H 8 1.15 SCAL 37 1.30 0.65 7 6.6 0.90 33 33 35 1.2 40 0.900 292.6 0.098 3.00 No No No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 18 7 ML 120 2238 2238 2238 0.9 1.4 H 8 1.15 SCAL 7 1.10 0.65 7 7.3 0.92 7 6 52 35 1.4 9 0.085 317.8 0.092 0.92 Yes No Yes ML 19 - Yes No 0.92 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 8 20.5 11 ML 125 2550 2550 2550 0.9 1.4 H 8 1.15 SCAL 10 1.16 0.65 7 8.1 0.94 10 9 35 1.3 12 0.106 341.8 0.087 1.22 Yes No Yes ML - Yes No 1.22 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 9 23 11 ML 125 2863 2863 2863 0.8 1.4 H 8 1.15 SCAL 9 1.15 0.65 7 8.8 0.95 11 9 91 35 1.3 12 0.100 360.8 0.082 1.22 Yes No Yes ML 37 - Yes No 1.22 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 10 25.5 12 ML 125 3175 3175 3175 0.8 1.4 H 8 1.15 SCAL 10 1.16 0.65 7 9.6 0.96 12 9 35 1.3 12 0.100 379.8 0.078 1.29 No No Yes ML - Yes No 1.29 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 11 28 9 SM 115 3463 3463 3457 0.8 1.4 H 8 1.15 SCAL 7 1.11 0.65 7 10.4 0.97 9 7 50 35 1.4 9 0.079 398.8 0.075 1.05 Yes Yes Yes SM 31 Yes Yes Yes Yes 1.05 Less Likely Liquefiable Less Likely Liquefiable. 1.0<FSL<1.25. 12 30.5 7 SM 115 3750 3750 3588 0.7 1.4 H 8 1.15 SCAL 5 1.10 0.65 7 11.1 0.98 7 5 12 1.2 6 0.060 417.3 0.076 0.79 Yes Yes Yes SM - Yes Yes 0.79 Likely Liquefiable Likely Liquefiable. FSL<1.0. 13 35.5 10 SM 115 4325 4138 3851 0.7 1.4 H 8 1.15 SCAL 7 1.12 0.65 7 12.6 0.99 10 7 31 31 1.3 9 0.076 450.2 0.076 1.00 Yes Yes Yes SM - Yes Yes 1.00 Likely Liquefiable Likely Liquefiable. FSL=1.0. 14 40.5 14 SM 125 4950 4451 4164 0.7 1.4 H 8 1.15 S 9 1.16 1.00 7 14.2 0.99 22 14 12 1.1 16 0.120 483.0 0.075 1.59 No Yes Yes SM - Yes No 1.59 Non-Liquefiable Non-Liquefiable. FSL>1.25. 15 45.5 113 GW 130 5600 4789 4502 0.6 1.4 H 8 1.15 S 73 1.30 1.00 7 15.7 0.99 175 113 3 0 1.0 113 171.834 513.7 0.074 3.00 No Yes No GW - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. 16 55.5 81 GW-GC 130 6900 5465 5178 0.6 1.4 H 8 1.15 S 49 1.30 1.00 7 18.7 1.00 126 76 9 9 1.0 79 13.197 571.1 0.072 3.00 No Yes No GW-GC - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25.

NA 60.5 99 ML 125 7525 5778 5491 0.6 1.4 H 8 1.15 S 58 1.30 1.00 7 20.3 1.00 154 90 35 1.2 105 88.755 597.7 0.071 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL>1.25. Below liquefaction assessment zone (>50' below LS toe). No sample recovery due to gravel in shoe.

Conclusions and Comments
2/26/2014
Drilled Jan. 2011
WRDA_2F-11-07
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
4/8/2014
PROJECT NUMBER: 17326660
From WRDA_2F-11-07
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest
Boring ID: Likely Liquefiable
American River (North Bank)
DWR Urban Levee Evaluations Program
H. Hayati
T. Kanax
Avg. Winter WSE
Ground Elevation (ft.)=
Station: 3239+97
DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: American River
LEVEE SEGMENT:

Data Input By Analyst
Results of Analysis
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/AMRVGERCF1TLiqSpd_NB/WRDA_2F-11-07_V1.3SPT Based Liquefaction 9/10/2024
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

40.5 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = -17.0 Note: Groundwater Depth Below GS During Drilling (ft.) = 57.5 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 15.1 Note: Analyzed Groundwater Depth Below GS (ft.) = 25.4 Energy Ratio = 74 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) S1 0.5 6 CH 120 60 60 60 1.6 1.2 H 6 1.05 S 10 1.10 1.00 7 2.0 0.75 6 9 35 1.3 12 0.304 11.4 0.124 2.45 No No Yes CH - No No 2.45 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S3 5.5 4 CL 115 635 635 635 1.6 1.2 H 6 1.05 S 6 1.10 1.00 7 3.5 0.75 4 6 35 1.4 9 0.121 122.1 0.125 0.97 Yes No Yes CL - No No 0.97 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S5 10.5 8 CL 125 1260 1260 1260 1.3 1.2 H 6 1.05 S 10 1.12 1.00 7 5.0 0.84 9 11 68 35 1.3 14 0.150 226.0 0.117 1.29 No No Yes CL - No No 1.29 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S7 15.5 5 CL 120 1860 1860 1860 1.0 1.2 H 6 1.05 S 5 1.10 1.00 7 6.6 0.90 6 6 35 1.4 9 0.088 292.6 0.102 0.86 Yes No Yes CL 34 13 14 No No No 0.86 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S10 23 16 CL 125 2798 2798 2798 0.8 1.2 H 6 1.05 S 14 1.19 1.00 7 8.8 0.95 20 17 75 35 1.2 21 0.196 360.8 0.084 2.34 No No Yes CL - No No 2.34 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S12 27.5 12 CH 125 3360 3360 3228 0.8 1.2 M 5.5 1.03 S 9 1.13 1.00 7 10.2 0.97 15 11 35 1.3 15 0.120 395.0 0.080 1.51 No Yes Yes CH 52 37 22 No No No 1.51 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction.

S15 33.5 29 CL 125 4110 4110 3604 0.7 1.2 M 5.5 1.03 S 20 1.30 1.00 7 12.0 0.98 36 25 35 1.2 31 0.381 437.1 0.079 3.00 No Yes No CL 40 28 18 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction.

S17 37.5 32 CL 125 4610 4610 3854 0.7 1.2 M 5.5 1.03 S 21 1.30 1.00 7 13.3 0.99 40 26 35 1.2 32 0.415 463.4 0.078 3.00 No Yes No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction.

S19 42.5 21 CL 125 5235 5235 4167 0.6 1.2 M 5.5 1.03 S 13 1.18 1.00 7 14.8 0.99 26 16 35 1.2 20 0.171 495.4 0.077 2.21 No Yes Yes CL - No No 2.21 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction.

S21 47.5 15 SC 125 5860 5860 4480 0.6 1.2 M 5.5 1.03 S 9 1.12 1.00 7 16.3 1.00 19 11 12 1.1 12 0.091 525.6 0.076 1.19 Yes Yes Yes SC - No No 1.19 Non-Liquefiable Non-Liquefiable. Not suceptible to liquefaction. Fines content > 20% based on field description.

S23 52.5 13 SC 125 6485 6485 4793 0.6 1.2 M 5.5 1.03 S 7 1.10 1.00 7 17.8 1.00 16 9 12 1.1 10 0.076 554.4 0.075 1.01 Yes Yes Yes SC - No No 1.01 Non-Liquefiable Non-Liquefiable. Not suceptible to liquefaction. Fines content > 20% based on field description.

S25 57.5 15 CL 125 7110 7110 5106 0.5 1.2 M 5.5 1.03 S 8 1.11 1.00 7 19.4 1.00 19 10 70 35 1.3 13 0.094 582.0 0.074 1.27 No Yes Yes CL - No No 1.27 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction.

S27 62.5 23 SC 125 7735 7423 5419 0.5 1.2 M 5.5 1.03 S 12 1.17 1.00 7 20.9 1.00 29 15 23 23 1.2 18 0.130 607.6 0.073 1.78 No Yes Yes SC - No No 1.78 Non-Liquefiable Non-Liquefiable. Not suceptible to liquefaction. Fines content > 20% based on laboratory test results.

S29 67.5 15 SC 125 8360 7736 5732 0.5 1.2 M 5.5 1.03 S 8 1.11 1.00 7 22.4 1.00 19 10 12 1.1 11 0.076 632.2 0.072 1.06 Yes Yes Yes SC - No No 1.06 Non-Liquefiable Non-Liquefiable. Not suceptible to liquefaction. Fines content > 20% based on field description.

S31 72.5 47 SP 130 9010 8074 6070 0.5 1.2 M 5.5 1.03 S 23 1.30 1.00 7 23.9 1.00 60 30 5 1.0 31 0.330 656.8 0.070 3.00 No Yes No SP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. Below liquefaction assessment zone (>50' below LS toe).

DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: NEMDC East
LEVEE SEGMENT:

Data Input By Analyst
NEMDC East Results of Analysis
DWR Urban Levee Evaluations Program
K. Atyam
L. Hong
Winter mean at American River
Ground Elevation (ft.)=
NMDE_A
Station: 2988+59
PROJECT NUMBER: 17326653
Regional Groundwater Map
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest
Boring ID: Likely Liquefiable
Conclusions and Comments
4/25/2014
Drilled October 2010
WRARFC_042B
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
5/5/2014
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/NMDE_Liquefaction Spreadsheets/2988+59_NEMDC East - WRARFC_042B_V1.3SPT Based Liquefaction 9/10/20
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

25.4 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = -17.0 Note: Groundwater Depth Below GS During Drilling (ft.) = 42.4 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 15.1 Note: Analyzed Groundwater Depth Below GS (ft.) = 10.3 Energy Ratio = 75 Mw = 6.5 Location = WatersideEnter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 0.75 10 ML 120 90 90 90 1.6 1.3 NA 4 1.00 SCAL 16 1.17 0.65 7 2.1 0.75 6 10 35 1.3 13 0.282 11.3 0.082 3.00 No No Yes ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 5.5 7 ML 115 636 636 636 1.6 1.3 NA 4 1.00 SCAL 11 1.12 0.65 7 3.5 0.75 4 7 35 1.4 10 0.127 116.1 0.119 1.07 Yes No Yes ML - Yes No 1.07 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 10.5 14 ML 125 1261 1261 1248 1.3 1.3 NA 4 1.00 SCAL 18 1.22 0.65 7 5.0 0.84 10 12 35 1.3 15 0.165 205.5 0.107 1.54 No Yes Yes ML - Yes No 1.54 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 4 15.5 11 ML 120 1861 1861 1536 1.0 1.3 NA 4 1.00 SCAL 11 1.14 0.65 7 6.6 0.90 8 8 35 1.3 11 0.114 279.5 0.118 0.96 Yes Yes Yes ML - Yes Yes 0.96 Likely Liquefiable Likely Liquefiable. FSL<1.0. 5 20.5 9 ML 120 2461 2461 1824 0.9 1.3 NA 4 1.00 SCAL 8 1.10 0.65 7 8.1 0.94 7 6 35 1.4 9 0.090 342.2 0.122 0.74 Yes Yes Yes ML - Yes Yes 0.74 Likely Liquefiable Likely Liquefiable. FSL<1.0. 6 25.5 22 CH 125 3086 3086 2137 0.8 1.3 NA 4 1.00 SCAL 18 1.25 0.65 7 9.6 0.96 17 14 35 1.3 18 0.166 404.3 0.123 1.35 No Yes Yes CH - No No 1.35 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 7 30.5 120 ML 125 3711 3711 2450 0.7 1.3 NA 4 1.00 SCAL 88 1.30 0.65 7 11.1 0.98 95 70 35 1.2 81 19.428 461.5 0.122 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 8 35.5 100 SM 130 4361 4361 2788 0.7 1.3 NA 4 1.00 SCAL 68 1.30 0.65 7 12.6 0.99 80 54 12 1.1 57 3.085 511.0 0.119 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 9 40.5 100 SP-SM 130 5011 5011 3126 0.6 1.3 NA 4 1.00 SCAL 63 1.30 0.65 7 14.2 0.99 81 51 8 1.0 53 2.125 550.7 0.114 3.00 No Yes No SP-SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 10 45.5 76 SP-SM 130 5661 5468 3464 0.6 1.3 NA 4 1.00 SCAL 46 1.30 0.65 7 15.7 0.99 61 37 8 1.0 39 0.712 585.5 0.110 3.00 No Yes No SP-SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 11 50.5 100 SP 130 6311 5806 3802 0.6 1.3 NA 4 1.00 SCAL 59 1.30 0.65 7 17.2 1.00 81 48 5 1.0 49 1.470 616.6 0.105 3.00 No Yes No SP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25.

Conclusions and Comments
4/25/2014
Drilled September 1993
K95_BE20
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
5/5/2014
PROJECT NUMBER: 17326653
Regional Groundwater Map
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Waterside Toe
Boring ID: Likely Liquefiable
NEMDC East
DWR Urban Levee Evaluations Program
K. Atyam
L. Hong
Winter mean at American River
Ground Elevation (ft.)=
NMDE_B
Station: 3008+90
DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: NEMDC East
LEVEE SEGMENT:

Data Input By Analyst
Results of Analysis
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/NMDE_Liquefaction Spreadsheets/3008+90_NEMDC East - K95_BE-20_V1.3SPT Based Liquefaction 9/10/2024
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

19.0 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = -21.0 Note: Groundwater Depth Below GS During Drilling (ft.) = 40.0 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 15.1 Note: Analyzed Groundwater Depth Below GS (ft.) = 3.9 Energy Ratio = 75 Mw = 6.5 Location = Landside Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 5.5 36 ML 125 688 688 587 1.6 1.3 H 6 1.05 MCAL 58 1.30 0.80 7 3.5 0.75 28 45 35 1.2 53 3.523 108.7 0.120 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 2 10.5 13 SM 125 1313 1313 900 1.2 1.3 H 6 1.05 S 16 1.21 1.00 7 5.0 0.84 14 18 12 1.1 19 0.238 199.7 0.144 1.65 No Yes Yes SM - Yes No 1.65 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 3 15.5 18 SP 125 1938 1938 1213 1.0 1.3 H 6 1.05 MCAL 18 1.26 0.80 7 6.6 0.90 17 17 3 0 1.0 17 0.191 283.1 0.152 1.26 No Yes Yes SP - Yes No 1.26 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 4 20.5 27 SC 130 2588 2588 1551 0.9 1.3 H 6 1.05 S 24 1.30 1.00 7 8.1 0.94 33 29 12 1.1 31 0.509 358.3 0.150 3.00 No Yes No SC - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. No indication of fines content on log. 5 25.5 80 ML 125 3213 3213 1864 0.8 1.3 H 6 1.05 MCAL 63 1.30 0.80 7 9.6 0.96 81 64 35 1.2 75 12.412 417.6 0.146 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 6 30.5 45 ML 125 3838 3838 2177 0.7 1.3 H 6 1.05 S 32 1.30 1.00 7 11.1 0.98 58 42 35 1.2 49 1.785 465.9 0.139 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 7 35.5 100 SM 130 4488 4488 2515 0.7 1.3 H 6 1.05 MCAL 67 1.30 0.80 7 12.6 0.99 104 69 12 1.1 73 10.225 503.1 0.130 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 8 40.5 95 ML 125 5113 5081 2828 0.6 1.3 H 6 1.05 S 60 1.30 1.00 7 14.2 0.99 124 78 35 1.2 90 35.801 530.5 0.122 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 9 45.5 90 SM 130 5763 5419 3166 0.6 1.3 H 6 1.05 MCAL 55 1.30 0.80 7 15.7 0.99 94 57 12 1.1 60 3.727 562.0 0.115 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25.

DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: NEMDC East
LEVEE SEGMENT:

Data Input By Analyst
NEMDC East Results of Analysis
DWR Urban Levee Evaluations Program
S. Orgill
L. Hong
Winter mean at American River
Ground Elevation (ft.)=
NMDE_B
Station: 3038+75
PROJECT NUMBER: 17326653
From K02-B3
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Landside Field
Boring ID: Likely Liquefiable
Conclusions and Comments
5/20/2014
Drilled may 2007
K02-B3
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
5/20/2014
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/NMDE_Liquefaction Spreadsheets/3038+75_NEMDC East - K02-B3SPT Based Liquefaction 9/10/2024
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

44.2 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = -14.4 Note: Groundwater Depth Below GS During Drilling (ft.) = 58.6 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 15.1 Note: Analyzed Groundwater Depth Below GS (ft.) = 29.1 Energy Ratio = 77 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 3 14 CL 125 375 375 375 1.6 1.3 H 10 1.15 S 22 1.30 1.00 7 2.7 0.75 15 25 68 35 1.2 30 0.686 67.6 0.117 3.00 No No No CL 35 26 16 No No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 8 15 CL 125 1000 1000 1000 1.4 1.3 H 10 1.15 MCAL 21 1.30 0.80 7 4.3 0.80 14 20 35 1.2 24 0.345 174.9 0.114 3.00 No No No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 10.5 4 SC 115 1288 1288 1288 1.2 1.3 H 10 1.15 S 5 1.10 1.00 7 5.0 0.84 5 6 12 1.1 7 0.087 226.0 0.114 0.76 Yes No Yes SC - Yes No 0.76 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 13 4 SC 115 1575 1575 1575 1.1 1.3 H 10 1.15 S 5 1.10 1.00 7 5.8 0.87 5 6 47 35 1.4 8 0.091 260.2 0.107 0.85 Yes No Yes SC 26 14 12 No No No 0.85 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 15.5 6 SC 115 1863 1863 1863 1.0 1.3 H 10 1.15 S 6 1.10 1.00 7 6.6 0.90 8 8 12 1.1 9 0.093 292.6 0.102 0.91 Yes No Yes SC - Yes No 0.91 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 18 2 CL 115 2150 2150 2150 1.0 1.3 H 10 1.15 S 2 1.10 1.00 7 7.3 0.92 3 3 35 1.8 5 0.063 317.8 0.096 0.66 Yes No Yes CL - No No 0.66 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 9 23 9 CL 125 2775 2775 2775 0.8 1.3 H 10 1.15 MCAL 8 1.12 0.80 7 8.8 0.95 10 9 35 1.3 12 0.098 360.8 0.085 1.16 Yes No Yes CL 35 21 22 No No No 1.16 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 11 28 12 SC 125 3400 3400 3400 0.8 1.3 H 10 1.15 S 9 1.15 1.00 7 10.4 0.97 17 13 37 35 1.3 17 0.138 398.8 0.076 1.81 No No Yes SC 24 12 14 No No No 1.81 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 12 30.5 5 SC 115 3688 3688 3600 0.7 1.3 H 10 1.15 S 4 1.10 1.00 7 11.1 0.98 7 5 12 1.2 6 0.061 417.3 0.075 0.81 Yes Yes Yes SC - No No 0.81 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. FC>20% in Sample 11, part of same layer.
14 35.5 24 SC 125 4313 4313 3913 0.7 1.3 M 4 1.00 MCAL 16 1.24 0.80 7 12.6 0.99 24 17 12 1.1 18 0.145 450.2 0.075 1.94 No Yes Yes SC - No No 1.94 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. FC>20% in Sample 11, part of same layer.
16 40.5 17 SC 125 4938 4938 4226 0.6 1.3 M 4 1.00 S 11 1.15 1.00 7 14.2 0.99 22 14 12 1.1 15 0.114 483.0 0.074 1.53 No Yes Yes SC - No No 1.53 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. FC>20% in Sample 11, part of same layer.
18 45.5 56 SP-SC 130 5588 5588 4564 0.6 1.3 M 4 1.00 S 34 1.30 1.00 7 15.7 0.99 71 43 8 1.0 45 1.020 513.7 0.073 3.00 No Yes No SP-SC - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 20 50.5 92 CL 125 6213 6213 4877 0.6 1.3 M 4 1.00 MCAL 52 1.30 0.80 7 17.2 1.00 94 53 35 1.2 63 3.900 543.0 0.072 3.00 No Yes No CL 29 - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 22 55.5 44 SP 130 6863 6863 5215 0.5 1.3 M 4 1.00 S 24 1.30 1.00 7 18.7 1.00 56 30 5 1.0 31 0.363 571.1 0.071 3.00 No Yes No SP - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 24 60.5 57 SP-SM 130 7513 7394 5553 0.5 1.3 M 4 1.00 S 30 1.30 1.00 7 20.3 1.00 73 38 8 1.0 40 0.667 597.7 0.070 3.00 No Yes No SP-SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 27 65.5 87 ML 125 8138 7707 5866 0.5 1.3 M 4 1.00 S 44 1.30 1.00 7 21.8 1.00 112 57 93 35 1.2 67 4.962 622.4 0.069 3.00 No Yes No ML 35 9 31 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. LL≥35 29 70.5 27 SM 130 8788 8045 6204 0.5 1.3 M 4 1.00 S 13 1.20 1.00 7 23.3 1.00 35 17 45 35 1.2 21 0.165 647.0 0.068 2.43 No Yes Yes SM - Yes No 2.43 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 31 75.5 192 CL 125 9413 8358 6517 0.5 1.3 M 4 1.00 S 94 1.30 1.00 7 24.8 1.00 246 120 93 35 1.2 139 ###### 671.6 0.067 3.00 No Yes No CL 31 - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. Below liquefaction assessment zone (>50' below LS toe).

Conclusions and Comments
4/25/2014
Drilled may 2007
WRARFC_002B
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
5/5/2014
PROJECT NUMBER: 17326653
Regional Groundwater Map
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest
Boring ID: Likely Liquefiable
NEMDC East
DWR Urban Levee Evaluations Program
K. Atyam
L. Hong
Winter mean at American River
Ground Elevation (ft.)=
NMDE_B
Station: 3051+36
DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: NEMDC East
LEVEE SEGMENT:

Data Input By Analyst
Results of Analysis
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/NMDE_Liquefaction Spreadsheets/3051+36_NEMDC East - WRARFC_002B_V1.3SPT Based Liquefaction 9/10/20
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

28.3 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = -13.0 Note: Groundwater Depth Below GS During Drilling (ft.) = 41.3 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 15.7 Note: Analyzed Groundwater Depth Below GS (ft.) = 12.6 Energy Ratio = 74 Mw = 6.5 Location = WatersideEnter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) S1 0.5 27 CL 125 63 63 63 1.6 1.2 M 5.5 1.03 S 43 1.30 1.00 7 2.0 0.75 26 41 35 1.2 49 4.581 11.3 0.118 3.00 No No No CL 34 22 4 No No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S3 3 35 SC 130 388 388 388 1.6 1.2 M 5.5 1.03 S 56 1.30 1.00 7 2.7 0.75 33 53 43 35 1.2 63 7.837 65.6 0.110 3.00 No No No SC - No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S5 7.5 24 SC 125 950 950 950 1.5 1.2 M 5.5 1.03 S 35 1.30 1.00 7 4.1 0.79 24 35 30 30 1.2 40 1.159 153.7 0.105 3.00 No No No SC 14 - No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S7 12.5 53 CL 125 1575 1575 1575 1.1 1.2 M 5.5 1.03 S 60 1.30 1.00 7 5.6 0.87 58 66 53 35 1.2 77 15.520 237.0 0.098 3.00 No No No CL 12 - No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S9 17.5 23 SC 125 2200 2200 1897 1.0 1.2 M 5.5 1.03 S 22 1.30 1.00 7 7.2 0.92 27 26 39 35 1.2 31 0.469 305.2 0.105 3.00 No Yes No SC 37 16 24 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. FC>20%.

S11 22.5 28 CL 125 2825 2825 2210 0.8 1.2 M 5.5 1.03 S 24 1.30 1.00 7 8.7 0.95 34 28 56 35 1.2 34 0.573 367.5 0.108 3.00 No Yes No CL 42 18 31 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction.

S13 27.5 29 CH 125 3450 3450 2523 0.8 1.2 M 5.5 1.03 S 22 1.30 1.00 7 10.2 0.97 36 27 35 1.2 33 0.496 428.1 0.110 3.00 No Yes No CH 60 34 52 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction.

S15 32.5 32 SM 130 4100 4100 2861 0.7 1.2 M 5.5 1.03 S 22 1.30 1.00 7 11.7 0.98 40 28 48 35 1.2 34 0.507 482.4 0.110 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25.

S17 37.5 59 ML 125 4725 4725 3174 0.7 1.2 M 5.5 1.03 S 38 1.30 1.00 7 13.3 0.99 74 48 78 35 1.2 57 2.812 527.5 0.108 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25.

S19 42.5 45 ML 125 5350 5275 3487 0.6 1.2 M 5.5 1.03 S 28 1.30 1.00 7 14.8 0.99 57 35 35 1.2 42 0.881 565.1 0.105 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25.

S21 47.5 100 SM 130 6000 5613 3825 0.6 1.2 M 5.5 1.03 S 60 1.30 1.00 7 16.3 1.00 126 75 12 1.1 80 15.035 598.4 0.102 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25.

S23 52.5 150 SC 130 6650 5951 4163 0.6 1.2 M 5.5 1.03 S 87 1.30 1.00 7 17.8 1.00 190 110 12 1.1 116 224.699 627.6 0.098 3.00 No Yes No SC - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. Below liquefaction assessment zone (>50' below LS toe).

DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: NEMDC East
LEVEE SEGMENT:

Data Input By Analyst
NEMDC East Results of Analysis
DWR Urban Levee Evaluations Program
K. Atyam
L. Hong
Bottom of channel
Ground Elevation (ft.)=
NMDE_C
Station: 3080+63
PROJECT NUMBER: 17326653
Regional Groundwater Map
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Waterside Toe
Boring ID: Likely Liquefiable
Conclusions and Comments
4/25/2014
Drilled September 2010
WRARFC_045B
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
5/5/2014
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/NMDE_Liquefaction Spreadsheets/3080+63_NEMDC East - WRARFC_045B_V1.3SPT Based Liquefaction 9/10/20
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

45.1 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = -0.8 Note: Groundwater Depth Below GS During Drilling (ft.) = 45.9 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 19.9 Note: Analyzed Groundwater Depth Below GS (ft.) = 25.3 Energy Ratio = 88 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 0.5 21 SC 125 63 63 63 1.6 1.5 H 8 1.15 S 34 1.30 1.00 7 2.0 0.75 27 43 12 1.1 45 3.515 11.4 0.119 3.00 No No No SC - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 3 21 SC 125 375 375 375 1.6 1.5 H 8 1.15 S 34 1.30 1.00 7 2.7 0.75 27 43 12 1.1 45 2.137 67.6 0.117 3.00 No No No SC - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 5.5 28 SC 130 700 700 700 1.6 1.5 H 8 1.15 S 45 1.30 1.00 7 3.5 0.75 35 57 39 35 1.2 66 8.833 122.1 0.113 3.00 No No No SC 27 13 14 No No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 8 21 SC 125 1013 1013 1013 1.4 1.5 H 8 1.15 S 30 1.30 1.00 7 4.3 0.80 28 40 32 32 1.2 46 1.768 174.9 0.112 3.00 No No No SC 35 25 17 No No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 10.5 11 SC 125 1325 1325 1325 1.2 1.5 H 8 1.15 S 14 1.22 1.00 7 5.0 0.84 16 19 12 1.1 21 0.240 226.0 0.111 2.16 No No Yes SC - Yes No 2.16 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 13 11 SC 125 1638 1638 1638 1.1 1.5 H 8 1.15 S 12 1.20 1.00 7 5.8 0.87 16 18 12 1.1 19 0.205 260.2 0.103 1.98 No No Yes SC - Yes No 1.98 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 15.5 8 SC 125 1950 1950 1950 1.0 1.5 H 8 1.15 S 8 1.14 1.00 7 6.6 0.90 12 12 42 35 1.3 16 0.149 292.6 0.098 1.53 No No Yes SC - No No 1.53 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 8 18 10 CL 125 2263 2263 2263 0.9 1.5 H 8 1.15 S 9 1.16 1.00 7 7.3 0.92 16 15 62 35 1.3 18 0.175 317.8 0.091 1.92 No No Yes CL 39 27 17 No No No 1.92 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 9 20.5 13 CL 125 2575 2575 2575 0.9 1.5 H 8 1.15 S 11 1.20 1.00 7 8.1 0.94 21 18 65 35 1.2 22 0.228 341.8 0.086 2.64 No No Yes CL 15 - No No 2.64 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 11 25.5 15 SC 125 3200 3200 3184 0.8 1.5 H 8 1.15 S 12 1.22 1.00 7 9.6 0.96 24 19 12 1.1 21 0.189 379.8 0.078 2.44 No Yes Yes SC - Yes No 2.44 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 13 30.5 13 SC 125 3825 3825 3497 0.7 1.5 M 4 1.00 S 9 1.15 1.00 7 11.1 0.98 19 13 46 35 1.3 17 0.140 417.3 0.078 1.81 No Yes Yes SC 45 19 36 No No No 1.81 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. FC>20%. 15 35.5 32 SC 130 4475 4475 3835 0.7 1.5 M 4 1.00 S 21 1.30 1.00 7 12.6 0.99 46 31 12 1.1 33 0.451 450.2 0.076 3.00 No Yes No SC - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 17 40.5 34 ML 125 5100 5100 4148 0.6 1.5 M 4 1.00 S 21 1.30 1.00 7 14.2 0.99 49 31 69 35 1.2 37 0.597 483.0 0.076 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 19 45.5 38 SM 130 5750 5750 4486 0.6 1.5 M 4 1.00 S 22 1.30 1.00 7 15.7 0.99 55 33 12 1.1 35 0.496 513.7 0.074 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 21 50.5 48 ML 125 6375 6088 4799 0.6 1.5 M 4 1.00 S 28 1.30 1.00 7 17.2 1.00 70 40 35 1.2 48 1.266 543.0 0.074 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 23 55.5 32 ML 125 7000 6401 5112 0.6 1.5 M 4 1.00 S 18 1.30 1.00 7 18.7 1.00 47 26 90 35 1.2 32 0.374 571.1 0.073 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 25 60.5 30 ML 125 7625 6714 5425 0.5 1.5 M 4 1.00 S 16 1.28 1.00 7 20.3 1.00 44 24 35 1.2 29 0.305 597.7 0.072 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 27 65.5 39 ML 125 8250 7027 5738 0.5 1.5 M 4 1.00 S 21 1.30 1.00 7 21.8 1.00 57 30 68 35 1.2 37 0.524 622.4 0.070 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. Below liquefaction assessment zone (>50' below LS toe).

DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: NEMDC East
LEVEE SEGMENT:

Data Input By Analyst
NEMDC East Results of Analysis
DWR Urban Levee Evaluations Program
K. Atyam
L. Hong
Bottom of channel
Ground Elevation (ft.)=
NMDE_D2
Station: 3167+60
PROJECT NUMBER: 17326653
Regional Groundwater Map
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest
Boring ID: Likely Liquefiable
Conclusions and Comments
4/25/2014
Drilled November 2007
WRARFC_031B
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
5/5/2014
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/NMDE_Liquefaction Spreadsheets/3167+60_NEMDC East - WRARFC_031B_V1.3SPT Based Liquefaction 9/10/20
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

23.8 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = -20.1 Note: Groundwater Depth Below GS During Drilling (ft.) = 43.9 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 15.6 Note: Analyzed Groundwater Depth Below GS (ft.) = 8.2 Energy Ratio = 74 Mw = 6.5 Location = Landside Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) S1 0.5 26 CL 125 63 63 63 1.6 1.2 M 5.5 1.03 MCAL 42 1.30 0.80 7 2.0 0.75 20 32 35 1.2 38 2.040 10.3 0.107 3.00 No No No CL 26 13 11 No No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S2 2 36 CL 125 250 250 250 1.6 1.2 M 5.5 1.03 S 58 1.30 1.00 7 2.4 0.75 34 55 35 1.2 64 10.085 40.6 0.106 3.00 No No No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S3 3.5 32 CL 125 438 438 438 1.6 1.2 M 5.5 1.03 S 51 1.30 1.00 7 2.9 0.75 30 49 58 35 1.2 57 5.123 70.2 0.104 3.00 No No No CL 10 - No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S4 5.5 14 SM 125 688 688 688 1.6 1.2 M 5.5 1.03 S 22 1.26 1.00 7 3.5 0.75 13 21 14 14 1.1 23 0.349 108.7 0.103 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S6 10.5 12 CL 125 1313 1313 1170 1.2 1.2 M 5.5 1.03 S 15 1.18 1.00 7 5.0 0.84 13 16 55 35 1.3 20 0.232 199.7 0.111 2.09 No Yes Yes CL 32 21 21 No No No 2.09 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction.

S8 15.5 19 SM 125 1938 1938 1483 1.0 1.2 M 5.5 1.03 S 19 1.26 1.00 7 6.6 0.90 22 22 46 35 1.2 27 0.372 283.1 0.124 3.00 No Yes No SM 12 - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25.

S10 20.5 47 CL 125 2563 2563 1796 0.9 1.2 M 5.5 1.03 S 42 1.30 1.00 7 8.1 0.94 56 50 73 35 1.2 58 3.702 358.3 0.130 3.00 No Yes No CL 35 15 30 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction.

S12 25.5 150 SM 130 3213 3213 2134 0.8 1.2 M 5.5 1.03 S 118 1.30 1.00 7 9.6 0.96 183 145 40 35 1.2 167 ###### 417.6 0.127 3.00 No Yes No SM 17 - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25.

S14 30.5 140 ML 125 3838 3838 2447 0.7 1.2 M 5.5 1.03 S 101 1.30 1.00 7 11.1 0.98 174 125 56 35 1.2 145 ###### 465.9 0.124 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25.

S16 35.5 60 ML 125 4463 4463 2760 0.7 1.2 M 5.5 1.03 S 40 1.30 1.00 7 12.6 0.99 75 50 85 35 1.2 59 3.502 503.1 0.118 3.00 No Yes No ML 30 3 30 Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25.

S18 40.5 100 ML 125 5088 5088 3073 0.6 1.2 M 5.5 1.03 S 63 1.30 1.00 7 14.2 0.99 126 79 35 1.2 92 39.476 530.5 0.112 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25.

S20 45.5 150 ML 125 5713 5613 3386 0.6 1.2 M 5.5 1.03 S 90 1.30 1.00 7 15.7 0.99 190 113 35 1.2 131 716.393 562.0 0.108 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25.

S22 50.5 89 ML 125 6338 5926 3699 0.6 1.2 M 5.5 1.03 S 52 1.30 1.00 7 17.2 1.00 113 65 35 1.2 76 11.813 591.1 0.104 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. Below liquefaction assessment zone (>50' below LS toe).

Conclusions and Comments
4/25/2014
Drilled September 2010
WRARFC_047B
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
5/5/2014
PROJECT NUMBER: 17326653
Regional Groundwater Map
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Landside Toe
Boring ID: Likely Liquefiable
NEMDC East
DWR Urban Levee Evaluations Program
K. Atyam
L. Hong
Bottom of channel
Ground Elevation (ft.)=
ACS_A
Station: 4031+79
DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: NEMDC East
LEVEE SEGMENT:

Data Input By Analyst
Results of Analysis
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/NMDE_Liquefaction Spreadsheets/4031+79_NEMDC East - WRARFC_047B_V1.3SPT Based Liquefaction 9/10/20
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

43.1 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = -31.0 Note: Groundwater Depth Below GS During Drilling (ft.) = 74.1 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 21.1 Note: Analyzed Groundwater Depth Below GS (ft.) = 22.0 Energy Ratio = 77 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) S1 3 22 SC 125 375 375 375 1.6 1.3 H 10 1.15 MCAL 35 1.30 0.80 7 2.7 0.75 19 31 28 28 1.2 36 1.081 67.6 0.117 3.00 No No No SC 10 - No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S3 8 5 SC 115 950 950 950 1.5 1.3 H 10 1.15 MCAL 7 1.10 0.80 7 4.3 0.80 5 7 12 1.1 8 0.100 174.9 0.120 0.84 Yes No Yes SC - Yes No 0.84 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S5 13 21 SM 125 1575 1575 1575 1.1 1.3 H 10 1.15 S 24 1.30 1.00 7 5.8 0.87 27 31 12 1.1 33 0.560 260.2 0.107 3.00 No No No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S6 15.5 22 SM 125 1888 1888 1888 1.0 1.3 H 10 1.15 S 23 1.30 1.00 7 6.6 0.90 29 30 15 15 1.1 33 0.536 292.6 0.101 3.00 No No No SM 21 2 5 Judgment Needed Yes No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S8 20.5 12 SM 125 2513 2513 2513 0.9 1.3 M 4 1.00 S 11 1.14 1.00 7 8.1 0.94 14 13 12 1.1 14 0.123 341.8 0.088 1.39 No No Yes SM - Yes No 1.39 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface.

S10 25.5 16 SP 125 3138 3138 2917 0.8 1.3 M 4 1.00 S 13 1.18 1.00 7 9.6 0.96 20 16 2 0 1.0 16 0.133 379.8 0.085 1.57 No Yes Yes SP - Yes No 1.57 Non-Liquefiable Non-Liquefiable. FSL≥1.25.

S12 30.5 60 SM 130 3788 3788 3255 0.7 1.3 M 4 1.00 S 44 1.30 1.00 7 11.1 0.98 75 55 45 35 1.2 64 4.861 417.3 0.083 3.00 No Yes No SM 18 Yes Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25.

S14 35.5 45 ML 125 4413 4413 3568 0.7 1.3 M 4 1.00 S 30 1.30 1.00 7 12.6 0.99 57 38 35 1.2 45 1.170 450.2 0.082 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25.

S16 40.5 51 SP-SM 130 5063 5063 3906 0.6 1.3 M 4 1.00 S 32 1.30 1.00 7 14.2 0.99 65 41 8 8 1.0 42 0.913 483.0 0.080 3.00 No Yes No SP-SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25.

S18 45.5 44 MH 125 5688 5688 4219 0.6 1.3 M 4 1.00 S 26 1.30 1.00 7 15.7 0.99 56 33 35 1.2 40 0.726 513.7 0.079 3.00 No Yes No MH 53 21 45 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. Bottom of boring Conclusions and Comments
4/25/2014
Drilled June 2007
WRARFC_004B
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
5/5/2014
PROJECT NUMBER: 17326653
Regional Groundwater Map
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest
Boring ID: Likely Liquefiable
NEMDC East
DWR Urban Levee Evaluations Program
K. Atyam
L. Hong
Bottom of channel
Ground Elevation (ft.)=
ACS_B
Station: 4090+46
DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: NEMDC East
LEVEE SEGMENT:

Data Input By Analyst
Results of Analysis
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/NMDE_Liquefaction Spreadsheets/4090+46_NEMDC East - WRARFC_004B_V1.3SPT Based Liquefaction 9/10/20
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

44.5 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = -20.1 Note: Groundwater Depth Below GS During Drilling (ft.) = 64.6 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 15.6 Note: Analyzed Groundwater Depth Below GS (ft.) = 28.9 Energy Ratio = 77 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 3 22 CL 125 375 375 375 1.6 1.3 H 10 1.15 MCAL 35 1.30 0.80 7 2.7 0.75 19 31 35 1.2 37 1.184 67.6 0.117 3.00 No No No CL 15 - No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 2 5.5 9 CL 120 675 675 675 1.6 1.3 H 10 1.15 MCAL 14 1.18 0.80 7 3.5 0.75 8 13 35 1.3 16 0.208 122.1 0.118 1.77 No No Yes CL 27 14 15 No No No 1.77 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 8 6 CL 120 975 975 975 1.4 1.3 H 10 1.15 S 9 1.11 1.00 7 4.3 0.80 7 10 35 1.3 13 0.150 174.9 0.117 1.29 No No Yes CL - No No 1.29 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 10.5 3 CL 115 1263 1263 1263 1.3 1.3 H 10 1.15 S 4 1.10 1.00 7 5.0 0.84 4 5 35 1.5 7 0.088 226.0 0.116 0.76 Yes No Yes CL - No No 0.76 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 13 8 CL 125 1575 1575 1575 1.1 1.3 H 10 1.15 S 9 1.13 1.00 7 5.8 0.87 10 12 35 1.3 15 0.149 260.2 0.107 1.39 No No Yes CL - No No 1.39 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 7 18 7 SC 115 2150 2150 2150 1.0 1.3 H 10 1.15 S 7 1.10 1.00 7 7.3 0.92 10 9 48 35 1.3 12 0.111 317.8 0.096 1.16 Yes No Yes SC 26 12 15 No No No 1.16 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 8 20.5 15 CL 125 2463 2463 2463 0.9 1.3 H 10 1.15 MCAL 14 1.21 0.80 7 8.1 0.94 17 15 57 35 1.3 19 0.176 341.8 0.090 1.95 No No Yes CL 22 - No No 1.95 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 10 25.5 10 SP 125 3088 3088 3088 0.8 1.3 M 4 1.00 S 8 1.11 1.00 7 9.6 0.96 12 10 5 5 1.0 10 0.088 379.8 0.080 1.10 Yes No Yes SP - Yes No 1.10 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 11 30.5 59 ML 125 3713 3713 3615 0.7 1.3 M 4 1.00 S 43 1.30 1.00 7 11.1 0.98 74 54 51 35 1.2 64 4.574 417.3 0.075 3.00 No Yes No ML 47 19 28 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction, LL≥35,PI≥10. 12 35.5 30 SP-SM 130 4363 4363 3953 0.7 1.3 M 4 1.00 S 20 1.30 1.00 7 12.6 0.99 38 26 12 12 1.1 28 0.296 450.2 0.074 3.00 No Yes No SP-SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 14 40.5 39 SM 130 5013 5013 4291 0.6 1.3 M 4 1.00 S 25 1.30 1.00 7 14.2 0.99 50 31 28 28 1.2 36 0.557 483.0 0.073 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 16 45.5 132 SM 130 5663 5663 4629 0.6 1.3 M 4 1.00 S 78 1.30 1.00 7 15.7 0.99 169 100 16 16 1.1 107 113.501 513.7 0.072 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 18 50.5 100 ML 125 6288 6288 4942 0.6 1.3 M 4 1.00 S 56 1.30 1.00 7 17.2 1.00 128 72 73 35 1.2 84 19.297 543.0 0.071 3.00 No Yes No ML 24 Yes Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 20 55.5 100 SM 130 6938 6938 5280 0.5 1.3 M 4 1.00 S 54 1.30 1.00 7 18.7 1.00 128 69 12 1.1 73 8.095 571.1 0.070 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 21 60.5 100 SM 130 7588 7588 5618 0.5 1.3 M 4 1.00 S 51 1.30 1.00 7 20.3 1.00 128 66 12 1.1 70 6.303 597.7 0.069 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 23 65.5 100 SM 130 8238 8181 5956 0.5 1.3 M 4 1.00 S 49 1.30 1.00 7 21.8 1.00 128 63 45 35 1.2 74 8.671 622.4 0.068 3.00 No Yes No SM - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 25 70.5 120 ML 125 8863 8494 6269 0.5 1.3 M 4 1.00 S 58 1.30 1.00 7 23.3 1.00 154 75 35 1.2 87 22.461 647.0 0.067 3.00 No Yes No ML - Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. Below liquefaction assessment zone (>50' below LS toe).

DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: NEMDC East
LEVEE SEGMENT:

Data Input By Analyst
NEMDC East Results of Analysis
DWR Urban Levee Evaluations Program
K. Atyam
L. Hong
Bottom of channel
Ground Elevation (ft.)=
ACN_A2
Station: 5048+89
PROJECT NUMBER: 17326653
Regional Groundwater Map
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest
Boring ID: Likely Liquefiable
Conclusions and Comments
4/25/2014
Drilled May 2007
WRARFC_003B
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
5/5/2014
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/NMDE_Liquefaction Spreadsheets/5048+89_NEMDC East - WRARFC_003B_V1.3SPT Based Liquefaction 9/10/20
Notes:

SPT-BASED LIQUEFACTION ANALYSIS 1. Refer to the Verification and Read Me tabs for further notes and instructions on using this spreadsheet.

References: 2. The "N60" values shown in this spreadsheet include corrections for hammer efficiency, borehole diameter, sampler type, and rod length (i.e., N60=NfieldCECBCSCR). These "N60" values are

Analysis By: Date:

Check By: Date:

47.0 Note: Intermittently (I) or Frequently (F) Loaded Levee = I Earthquake Information:

Groundwater Elev. During Drilling (ft.) = -13.0 Note: Groundwater Depth Below GS During Drilling (ft.) = 60.0 Hammer Type = Automatic Return Period (years) = 200 PHA (g) = 0.14 Analyzed Groundwater Elevation (ft.)= 26.9 Note: Analyzed Groundwater Depth Below GS (ft.) = 20.1 Energy Ratio = 77 Mw = 6.5 Location = Crest Enter: Crest, Landside, or Waterside Sample ID Depth to Sample (ft.) Nfield USCS Classification Unit Weight (pcf) Total Overburden Pressure, sv (psf) Effective Overburden Pressure During Drilling, sv' (psf) Effective Overburden Pressure During Earthquake, sv' (psf) Overburden Correction Factor, CN Correction for Hammer Energy Efficiency, CE Drilling Method Borehole Diameter (inches) Correction for Borehole Diameter, CB Sampler Code (S, SW, SCAL, MCAL) N1 for Sampler Correction Only (for SW sampler) Sampler Correction, Cs (for SW Sampler only) Sampler Correction for Analysis, Cs Stick Up (Protrusion) Rod Length Above Ground (feet) Rod Length (m) Rod Length Correction Factor, CR N60 N1,60 Fines Content (%) Fines Content for Analysis (%) Correction Factor for Fine Content, Cfines N1,60,CS Cyclic Resistance Ratio, CRR τmax (psf) Cyclic Stress Ratio, CSR Factor of Safety, FSL FSL < 1.25 (Yes/No) Below Analyzed Ground water Level (Yes/No) N1,60,CS<23 (Yes/No) USCS Classification Liquid Limit, LL (%) (Enter number only) Plasticity Index, PI (%) (Enter number only) Water Content, w (%) (Enter number only) NP from Atterberg Limits test (Yes/Blank) Is PI<10, LL<35, w>0.8LL? Liquefaction Susceptibility Based on Soil Type (Yes/No) Final Assessment (Yes/No) (Based on Columns AE, AF, AG, and AN) Factor of Safety, FSL Comment (Likely Liquefiable for FSL≤1; Less Likely Liquefiable for 1.0<FSL<1.25; Non-Liquefiable for FSL≥1.25) 1 3 10 SC 115 345 345 345 1.6 1.3 H 10 1.15 MCAL 16 1.21 0.80 7 2.7 0.75 9 14 47 35 1.3 18 0.283 67.6 0.127 2.22 No No Yes SC 33 20 15 No No No 2.22 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 3 8 5 CL 120 945 945 945 1.5 1.3 H 10 1.15 S 7 1.10 1.00 7 4.3 0.80 6 9 55 35 1.3 11 0.132 174.9 0.120 1.10 Yes No Yes CL 36 26 15 No No No 1.10 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 4 10.5 9 SC 115 1233 1233 1233 1.3 1.3 H 10 1.15 MCAL 11 1.16 0.80 7 5.0 0.84 9 11 40 35 1.3 15 0.156 226.0 0.119 1.31 No No Yes SC - No No 1.31 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 5 13 31 SC 130 1558 1558 1558 1.1 1.3 H 10 1.15 S 35 1.30 1.00 7 5.8 0.87 40 45 12 1.1 48 1.800 260.2 0.109 3.00 No No No SC - No No 3.00 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 6 15.5 14 MH 125 1870 1870 1870 1.0 1.3 H 10 1.15 S 14 1.22 1.00 7 6.6 0.90 19 19 57 35 1.2 24 0.274 292.6 0.102 2.69 No No No MH 55 23 48 No No No 2.69 Non-Liquefiable Non-Liquefiable. Sample is above the groundwater surface. 8 20.5 35 CL 125 2495 2495 2470 0.9 1.3 M 4 1.00 S 31 1.30 1.00 7 8.1 0.94 42 38 61 35 1.2 45 1.236 341.8 0.090 3.00 No Yes No CL 37 21 22 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 10 25.5 34 CL 125 3120 3120 2783 0.8 1.3 M 4 1.00 S 27 1.30 1.00 7 9.6 0.96 42 34 35 1.2 40 0.839 379.8 0.089 3.00 No Yes No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 12 30.5 35 CL 125 3745 3745 3096 0.7 1.3 M 4 1.00 S 26 1.30 1.00 7 11.1 0.98 44 32 35 1.2 38 0.712 417.3 0.088 3.00 No Yes No CL - No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 14 35.5 82 ML 125 4370 4370 3409 0.7 1.3 M 4 1.00 S 55 1.30 1.00 7 12.6 0.99 104 70 75 35 1.2 82 18.108 450.2 0.086 3.00 No Yes No ML 46 17 29 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. LL>35, PI>10. 16 40.5 29 ML 125 4995 4995 3722 0.6 1.3 M 4 1.00 S 18 1.28 1.00 7 14.2 0.99 37 23 62 35 1.2 28 0.321 483.0 0.084 3.00 No Yes No ML 32 7 30 Yes Yes No 3.00 Non-Liquefiable Non-Liquefiable. FSL≥1.25. 18 45.5 37 CL 125 5620 5620 4035 0.6 1.3 M 4 1.00 S 22 1.30 1.00 7 15.7 0.99 47 28 64 35 1.2 34 0.474 513.7 0.083 3.00 No Yes No CL 36 14 26 No No No 3.00 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. 20 50.5 23 ML 125 6245 6245 4348 0.6 1.3 M 4 1.00 S 13 1.19 1.00 7 17.2 1.00 29 17 52 35 1.2 21 0.173 543.0 0.081 2.13 No Yes Yes ML 35 8 26 No No No 2.13 Non-Liquefiable Non-Liquefiable. Not susceptible to liquefaction. LL>35. 22 55.5 24 SM 130 6895 6895 4686 0.5 1.3 M 4 1.00 S 13 1.19 1.00 7 18.7 1.00 31 17 45 35 1.2 21 0.168 571.1 0.079 2.12 No Yes Yes SM 28 Yes Yes Yes No 2.12 Non-Liquefiable Non-Liquefiable. FSL≥1.25. Bottom of boring.

DWR Urban Levee Geotechnical Evaluations Program (ULE)
Reach ID:

PROJECT NAME:

Table 1: Liquefaction-Triggering Analysis for ULE
Task Area: NEMDC East
LEVEE SEGMENT:

Data Input By Analyst
NEMDC East Results of Analysis
DWR Urban Levee Evaluations Program
K. Atyam
L. Hong
Bottom of Channel
Ground Elevation (ft.)=
DCS_A2
Station: 6049+18
PROJECT NUMBER: 17326653
Regional Groundwater Map
Boring Location
(Crest/Landside/Waterside, and
distance from Crest/Landside
toe/Waterside toe)
Lab Test Results for Fine-Grained Soils
Crest
Boring ID: Likely Liquefiable
Conclusions and Comments
4/25/2014
Drilled June 2007
WRARFC_008B
Liquefaction Assessment
Calculated Values
Non-Liquefiable
Less Likely Liquefiable
5/5/2014
https://kleinfelder1-my.sharepoint.com/personal/aklomp_kleinfelder_com/Documents/Desktop/SAC24R172217 - NASL SPSR/App F - Original Liquefaction Spreadsheets/NMDE_Liquefaction Spreadsheets/6049+18_NEMDC East - WRARFC_008B_V1.3SPT Based Liquefaction 9/10/20
Appendix F.

Robla-Arcade Levee System
ULDC and FEMA Levee
Inspection - MBK Engineers
Water Resources  Flood Control  Water Rights DON TRIEU, P.E. FOUNDERS:

DARREN CORDOVA, P.E
NATHAN HERSHEY, P.E., P.L.S. ANGUS NORMAN MURRAY
LEE G. BERGFELD, P.E. 1913-1985
BEN TUSTISON, P.E. JOSEPH I. BURNS
THOMAS ENGLER, P.E., CFM 1926-2021
MICHAEL MONCRIEF, P.E. DONALD E. KIENLEN
NICOLE ORTEGA-JEWELL, PMP 1930-2023
KYLE KNUTSON, P.E.

ANNE WILLIAMS, P.E.

PATRICK HO, P.E.

M E M O R A N D U M
DATE: August 15, 2025
TO: File
PREPARED BY: Tom Engler, P.E., MBK Engineers
SUBJECT: SAFCA Robla Arcade Levee System
Levee O&M Review in Support of FEMA Certification and ULDC Evaluation
On July 10, 2024, I reviewed the urban portion of the SAFCA Robla Arcade levee system. This system consists of the Robla Creek South Levee, the Natomas East Main Drainage Canal (NEMDC) East Levee, and the Arcade Creek North Levee. The purpose of the inspection was to support the finding on levee system operation and maintenance (O&M) for Federal Emergency Management Agency (FEMA) certification and an Urban Levee Design Criteria (ULDC) evaluation for the SAFCA Robla Arcade Levee System. This memorandum provides findings from record reviews and a site visit to support this purpose.

FEMA’s criteria for operation and maintenance plans are stated in 44 CFR 65.10(c) and 44 CFR

65.10(d) which primarily focuses on O&M compliance requirements that are typically included in the levee’s O&M manual and other supplemental documentation adopted by agencies responsible for other flood control features such as interior drainage facilities and closure structures.

For ULDC, the O&M practices are assessed based on the evaluation required for specific ULDC items. The methodologies and practices that the local maintaining agencies exercise in conducting their routine inspections, operations, and maintenance responsibilities shall have a bearing on the overall evaluation and finding for the applicable ULDC item.

The following ULDC items were reviewed during this site visit that require the evaluation of O&M practices to make the necessary ULDC finding:

7.10 Erosion

7.12 Encroachments

7.15 Animal Burrows

7.16 Levee Vegetation
To File August 15, 2025
Robla Arcade O&M Review in Support of FEMA and ULDC Certification Page 2 Mead & Hunt evaluated the USACE1 Supplement to Standard Operation and Maintenance Manual, Sacramento River Flood Control Project, Unit No. 118 – Part No. 2. North Levee of American River, East Levee of Natomas Canal, Both Levees of Arcade Creek, South Levee of Linda Creek and Magpie Creek Diversion Channel, revised date 28 Jan 2023 (O&M Manual) with respect to FEMA and ULDC and made the determination that the Robla Arcade levee system is in compliance with the O&M manual and other operations and maintenance procedures necessary for the levee system to perform during a flood event. Mead & Hunt’s findings is documented in the report titled, Robla Arcade Levee System Due Diligence Review for FEMA and ULDC Certification (Mead & Hunt, 2024a). The remaining ULDC criteria not listed above are reviewed and evaluated under a separate cover.

MBK Engineers (MBK) performed a site inspection on July 10, 2024. While areas of erosion and/or rilling were identified on the levee slopes or within 15 feet of the levee toes, specifically along the NEMDC levee that parallel the Union Pacific (UP) railroad tracks and a few isolated areas along Arcade Creek where homeless encampments were present and foot traffic is causing minor erosion damage to the slopes, American River Flood Control District (ARFCD) has an active program to repair these areas and several repairs that have already been completed this year showed that these plans more than adequately repair this ongoing issue. There were no visible signs of burrowing rodent activity and, according to ARFCD, burrowing rodents are not currently a concern on the Robla Creek, NEMDC, or Arcade Creek levees. However, ARFCD actively monitors for signs of rodent activity and will implement their baiting and grouting program (ARFCD, 2017), if necessary. In terms of vegetation, there is no woody vegetation located on or within 15 feet of the levee landside or waterside levee toes nor any on the slopes or crown of the Robla Creek south levee and NEMDC east levee, which exceeds ULDC requirements for the vegetation management zone (VMZ). However, woody vegetation in the form of a few large trees were observed along the Arcade Creek north levee upstream of Rio Linda Boulevard, which are within the VMZ. These trees are randomly located near the toe of the levee and do not pose a concern for visibility and/or flood fighting. The ULDC requirements are consistent with the O&M manual. The VMZ is shown in the graphic below.

Figure 1. Vegetation Management Zone
1 U.S. Army Corps of Engineers
To File August 15, 2025
Robla Arcade O&M Review in Support of FEMA and ULDC Certification Page 3 The following notes were recorded:

All levees had good vegetative cover on both the land and waterside slopes, i.e., herbaceous groundcover, per USACE and Central Valley Flood Protection Board standards, except along the UP portion of NEMDC where railroad maintenance chemically treats the right of way, including the levee slope, to eliminate all vegetative cover. ARFCD continues to work with UP to cover these areas with gravels to prevent surface rilling and actively repairs areas where rilling occurs.

The patrol road is in good condition throughout. The landside toe corridor is free of undesirable vegetation along Robla Creek south levee, NEMDC east levee, and a majority of Arcade Creek north levee. However, along the Arcade Creek north levee upstream of Rio Linda Boulevard, a landside toe corridor is not present, while encroachments and vegetation are present at the landside toe. These observations are not considered a concern because (a) visibility into the backyards is present, (b) the high-water events are short and do not remain elevated for long, and (c) the levee has a relatively short top of levee elevation and flood fighting can be accessed from the levee crest. Based on review of the O&M manual and observations from this site visit, the Robla Arcade levee system meets both FEMA and ULDC requirements related to O&M.

Attachment 1 is the 2010 USACE Periodic Inspection (PI) Report. Attachment 2 is the 2023 USACE Routine Inspection (RI) Report . These inspection reports do not identify any critical O&M issues other than unwanted vegetation growth which ARFCD works diligently to remove.

This current levee site visit is the basis for concluding that the urban portion of the Robla Arcade levee system meets both FEMA and ULDC requirements for O&M. __________________________________
Tom Engler, P.E.

TE/oh
Attachments: 2010 USACE Periodic Inspection (PI) Report 2023 USACE Routine Inspection (RI) Report
SAFCA Robla Arcade Levee System Levee O&M Review
2010 USACE Periodic Inspection (PI) Report

SAFCA Robla Arcade Levee System Levee O&M Review
2023 USACE Periodic Inspection (PI) Report

DEPARTMENT OF THE ARMY
U.S. ARMY CORPS OF ENGINEERS, SACRAMENTO DISTRICT
1325 J STREET
SACRAMENTO, CALIFORNIA 95814-2922
JUL 21, 2025
Mr. Chris Lief
Executive Officer
Central Valley Flood Protection Board
3310 El Camino Avenue, Room 170
Sacramento, CA 95821
Dear Mr. Lief:

The U.S. Army Corps of Engineers (USACE) Sacramento District conducted an inspection of the American River Flood Control District (ARFCD) – Dry Creek, Natomas East Main Drainage Canal (NEMDC), Arcade Creek levee system on February 13 through 24, 2023. The enclosed maps, report card, and inspection report for the system serve as a summary of the inspection. The system is comprised of four segments as shown in the maps and report card.

The inspection team identified unacceptable conditions as part of this inspection.

The report card identifies the worst-case item ratings for each levee segment. An engineering determination, based upon visual inspection and supplemental information, concluded there are no unacceptable conditions that are expected to have a negative impact on project performance (NIOP). An engineering determination, based upon visual inspection and supplemental information, concluded there are unacceptable conditions that are not expected to have a NIOP. These items are rated “Minimally Acceptable” and shown as “M*” on the report card and are rated “Unacceptable” in the individual observations of the inspection report.

A subset of inspection items is used to determine the status of the system under the Public Law (PL) 84-99 Rehabilitation Program (RP) in accordance with “Interim Policy for Determining Eligibility Status of Flood Risk Management Projects for the RP pursuant to PL 84-99”, dated March 21, 2014. To receive an active status in the RP, all items in the section of the report card labeled “Items Affecting PL 84-99 RP Eligibility” must receive an acceptable or minimally acceptable rating. Based upon the results of this inspection and the requirements of the USACE “Interim Policy for Determining Eligibility Status of Flood Risk Management Projects for the RP pursuant to PL 84-99,” dated March 21, 2014, the ARFCD – Dry Creek, NEMDC, Arcade Creek levee system will remain active in the PL 84-99 RP.

If further information is available that may document correction of an issue, completion of an interim repair, clarification that an issue is not within the sponsor/project easement or demonstration an issue is not a critical concern, please -2-
provide documentation for our consideration. If a potential levee safety issue is outside the local sponsor’s easement area, USACE recommends the local sponsor develop and implement measures within its legal authorities to mitigate or correct the issue. The status in the RP will not be adversely impacted by an issue outside the project easement.

The findings associated with this inspection have impacts to the protected community and will be communicated to interested parties, including federal, state, and local branches of government. These inspection reports are used for the purpose of determining eligibility for the RP and should not be construed to provide any express or implied warranty regarding levee performance during a flood event.

The USACE inspection ratings represent an evaluation of operations and maintenance of the flood risk reduction system and may be used in conjunction with other information for a levee certification determination for National Flood Insurance Program (NFIP) purposes, if applicable. For a levee system with unacceptable item ratings and currently accredited by the Federal Emergency Management Agency (FEMA) for NFIP purposes, it is recommended that the system be evaluated by the levee owner to determine the potential impacts to the certification for FEMA.

Please maintain an updated levee log for the levee system, and provide to the USACE Sacramento District an inspection report or plan for inspection of the condition of all pipes affecting the flood risk management structure and a map showing the rightof-way easement area within one year from the date of this letter, and prior to any reinspection of the levee system If you have any questions regarding this inspection, please contact Juan Gonzalez, Chief, Inspection Section, by email at [email protected] or by telephone at (916) 557-7936. A copy of this letter is being furnished to the Sacramento County Office of Emergency Management as a decision maker in the area behind the levee.

Sincerely,
Lynn Moquette, PE, PMP
Deputy Chief, Engineering Division
Levee Safety Officer
Enclosures
MOQUETTE.LYNN.

NESLY.1231838631
Digitally signed by
MOQUETTE.LYNN.NESLY.123183
8631
Date: 2025.07.21 15:58:25 -07'00'
Inspection Summary American River FCD - Dry Cr, NEMDC, Arcade Cr

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Sacramento City CouncilOctober 21, 2025

Sacramento City Council
October 21, 2025