02_140R2024R0017_14_of_15_0002.pdf

Brown Silty CLAY with Sand (CL-ML)

Arroyo Canal Fish Screen and Sack Dam Fish Passage Project

PINHOLE AND CRUMB DISPERSION TESTS

Arroyo Canal Fish Screen and Sack Dam Fish Passage Project

Arroyo Canal Fish Screen and Sack Dam Fish Passage Project, SJRRP

27.5-30.0 ft.

United States Department of the Interior

BUREAU OF RECLAMATION

PO Box 25007

Denver, CO 80225-0007

86-68550 2.2.4.23

VIA ELECTRONIC MAIL ONLY

Memorandum

To: Geotechnical Services Division Geotechnical Design Group #4, Technical Service Center, Denver, CO Attention: 86-68314 (Danielle V. Schroeder, P.E., Civil Engineer)

From: Tyler L. Chatfield, P.E., Civil Engineer Geotechnical Laboratory and Field Support (86-68550), Technical Service Center, Denver, CO

Subject: Transmittal of Geotechnical Data from Cone Penetration Testing Performed by Contractor

(Geo-Ex) at Sack Dam and Arroyo Canal Headworks, San Joaquin River Restoration Program, CA. GLFS Reference No. 8550-23-34.

Attached are the results of the Cone Penetration Testing (CPT) soundings performed by Geo-Ex Subsurface Exploration (Dixon, CA) at the subject site. These soundings were performed in addition to soundings performed internally by the Bureau of Reclamation, in which results are outlined in a California Great-Basin (CGB) Region Geology Report (CGB-230) dated July 2022: �Geologic Investigations Report, Arroyo Canal Fish Screen and Sack Dam Fish Passage Project�.

If you have any questions or comments regarding this testing program, please contact Tyler Chatfield at 303-445-2371 or via email at tchatfield@usbr.gov.

Attachment

Electronic copy CC recipients (w/att):

lhoward@usbr.gov � Logan Howard, SJRRP Program Manager jandrieux@usbr.gov � Jessica Andrieux, CGB Region Natural Resource Specialist jchadwick@usbr.gov � Jesse Chadwick, TSC Geologist jvauk@usbr.gov � Jared Vauk, TSC Supervisory Geologist nclough@usbr.gov � Nicholas Clough, TSC Civil Engineer cubing@usbr.gov � Caroline Ubing, TSC Project Manager ghsutley@usbr.gov � Garrett Sutley, TSC Supervisory Geotechnical Engineer rwoodruff@usbr.gov � Ryan Woodruff, TSC Supervisory Geotechnical Engineer

Project: San Joaquin River Restoration Program

Geotechnical Laboratory and Field Support Technical Service Center, Denver CO Cone Penetration Testing Results

Total depth: 75.75 ft, Date: 8/31/2023

Surface Elevation: 116.68 ft

Sack Dam and Arroyo Canal Headworks Rehabilitation

Coords: N 1816839.05, E 6561495.59

Cone Type: 15 cm^2

Cone Operator: Geo-Ex

Sounding: CPT-23-23

Location:

Cone resistance

Tip resistance (tsf) 4003002001000

Cone resistance Pore pressure

Pressure (psi) 300250200150100500

Pore pressure

Diss.

Diss.

Diss.

Diss.

Sleeve friction

Friction (tsf) 14121086420

Sleeve friction

CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 1:57:09 PM 1

P ro je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

To ta l d ep th

.7 ft

D at e:

/3

1/

Su rf ac e

El ev at io n:

.6 ft

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

Co or ds

N

.0

5, E

.5

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o n

Elevation (ft)

Elevation (ft)

Elevation (ft)

S B

T le g en d 1.

Se ns iti ve f in e gr ai ne d

2.

O rg an ic m at er ia l

3.

Cl ay t o si lty c la y

4.

Cl ay ey s ilt t o si lty c la y

5.

Si lty s an d to s an dy s ilt

6.

Cl ea n sa nd t o si lty s an d

7.

G ra ve ly s an d to s an d

8.

Ve ry s tif f sa nd t o cl ay ey s an d

9.

Ve ry s tif f fin e gr ai ne d

Elevation (ft)

Elevation (ft)

CP

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R iv er R es to ra ti o n

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G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

To ta l d ep th

.7 ft

D at e:

/3

1/

Su rf ac e

El ev at io n:

.6 ft

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

Co or ds

N

.0

5, E

.5

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o n

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

S B

Tn le g en d 1.

Se ns iti ve f in e gr ai ne d

2.

O rg an ic m at er ia l

3.

Cl ay t o si lty c la y

4.

Cl ay ey s ilt t o si lty c la y

5.

Si lty s an d to s an dy s ilt

6.

Cl ea n sa nd t o si lty s an d

7.

G ra ve ly s an d to s an d

8.

Ve ry s tif f sa nd t o cl ay ey s an d

9.

Ve ry s tif f fin e gr ai ne d

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

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:0 je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

To ta l d ep th

.7 ft

D at e:

/3

1/

Su rf ac e

El ev at io n:

.6 ft

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

Co or ds

N

.0

5, E

.5

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o n

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

M o d

S B

T n le g en d

1.

CC

S:

C la yL ik e

Co nt ra ct iv e, S en si tiv e

2.

CC

Cl ay -li ke

C on tr ac tiv e

3.

CD

Cl ay -L ik e:

D ila tiv e

4.

TC

Tr an si tio na l - C on tr ac tiv e

5.

TD

Tr an si tio na l - D ila tiv e

6.

SC

Sa nd -li ke

C on tr ac tiv e

7.

SD

Sa nd -li ke

D ila tiv e

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

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This software is licensed to: Bureau Of Reclamation CPT name: CPT-23-23

Piezocone Dissipation Test: CPT-23-23 Elevation: 101.88 (ft) t^0.50 (s^0.50) 605550454035302520151050

Piezocone Dissipation Test: CPT-23-23 Elevation: 101.88 (ft) u0 = 0.00 (psi)

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

Pore pressure

6CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 1:57:10 PM

Elevation: 76.58 (ft) t^0.50 (s^0.50) 605550454035302520151050

Piezocone Dissipation Test: CPT-23-23 Elevation: 76.58 (ft) u0 = 5.21 (psi)

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

7CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 1:57:10 PM

Elevation: 61.48 (ft) t^0.50 (s^0.50) 605550454035302520151050

Piezocone Dissipation Test: CPT-23-23 Elevation: 61.48 (ft) u0 = 11.75 (psi)

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

8CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 1:57:11 PM

Elevation: 40.98 (ft) t^0.50 (s^0.50) 605550454035302520151050

Piezocone Dissipation Test: CPT-23-23 Elevation: 40.98 (ft) u0 = 20.62 (psi)

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

9CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 1:57:11 PM

Elevation (ft)

Elevation (ft)

Elevation (ft)

CP

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R iv er R es to ra ti o n

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G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

To ta l d ep th

.7 ft

D at e:

/3

1/

Su rf ac e

El ev at io n:

.6 ft

Co or ds

N

.0

5, E

.5

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o n

Elevation (ft)

Elevation (ft)

CP

eT

-I T v.

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9.

3.

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P ro je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

To ta l d ep th

.7 ft

D at e:

/3

1/

Su rf ac e

El ev at io n:

.6 ft

Co or ds

N

.0

5, E

.5

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o

Technical Service Center, Denver CO Cone Penetration Testing Results

Total depth: 66.99 ft, Date: 9/1/2023

Surface Elevation: 114.32 ft

Sack Dam and Arroyo Canal Headworks Rehabilitation

Coords: N 1816758.79, E 6561539.37

Cone Type: 15 cm^2

Cone Operator: Geo-Ex

Sounding: CPT-23-24

Location:

Cone resistance

Tip resistance (tsf) 4003002001000

Cone resistance Pore pressure

Pressure (psi) 300250200150100500

Pore pressure

Diss.

Diss.

Diss.

Diss.

Sleeve friction

Friction (tsf) 14121086420

CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:03:40 PM 1 je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

To ta l d ep th

.9 ft

D at e:

/1

/2

Su rf ac e

El ev at io n:

.3 ft

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

Co or ds

N

.7

9, E

.3

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o n

Elevation (ft)

Elevation (ft)

Elevation (ft)

S B

T le g en d 1.

Se ns iti ve f in e gr ai ne d

2.

O rg an ic m at er ia l

3.

Cl ay t o si lty c la y

4.

Cl ay ey s ilt t o si lty c la y

5.

Si lty s an d to s an dy s ilt

6.

Cl ea n sa nd t o si lty s an d

7.

G ra ve ly s an d to s an d

8.

Ve ry s tif f sa nd t o cl ay ey s an d

9.

Ve ry s tif f fin e gr ai ne d

Elevation (ft)

Elevation (ft)

CP

eT

-I T v.

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3.

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S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

To ta l d ep th

.9 ft

D at e:

/1

/2

Su rf ac e

El ev at io n:

.3 ft

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

Co or ds

N

.7

9, E

.3

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o n

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

S B

Tn le g en d 1.

Se ns iti ve f in e gr ai ne d

2.

O rg an ic m at er ia l

3.

Cl ay t o si lty c la y

4.

Cl ay ey s ilt t o si lty c la y

5.

Si lty s an d to s an dy s ilt

6.

Cl ea n sa nd t o si lty s an d

7.

G ra ve ly s an d to s an d

8.

Ve ry s tif f sa nd t o cl ay ey s an d

9.

Ve ry s tif f fin e gr ai ne d

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

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2:

:4 je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

To ta l d ep th

.9 ft

D at e:

/1

/2

Su rf ac e

El ev at io n:

.3 ft

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

Co or ds

N

.7

9, E

.3

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o n

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

M o d

S B

T n le g en d

1.

CC

S:

C la yL ik e

Co nt ra ct iv e, S en si tiv e

2.

CC

Cl ay -li ke

C on tr ac tiv e

3.

CD

Cl ay -L ik e:

D ila tiv e

4.

TC

Tr an si tio na l - C on tr ac tiv e

5.

TD

Tr an si tio na l - D ila tiv e

6.

SC

Sa nd -li ke

C on tr ac tiv e

7.

SD

Sa nd -li ke

D ila tiv e

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

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Technical Service Center, Denver CO Cone Penetration Testing Results

Total depth: 66.99 ft, Date: 9/1/2023

Surface Elevation: 114.32 ft

Sack Dam and Arroyo Canal Headworks Rehabilitation

Coords: N 1816758.79, E 6561539.37

Cone Type: 15 cm^2

Cone Operator: Geo-Ex

Sounding: CPT-23-24

Location:

CPTU

Borehole

Depth (ft)

(t50)0.50 t50

(s) t50

(years) G/Su ch

(ft2/s) ch

(ft2/year)

T a b u l a r r e s u l t s

Dissipation Tests Results

Dissipation tests consists of stopping the piezocone penetration and observing porepressures (u) with elapsed time (t).

The data are automatic recorded by the field computer and should take place until a minimum of 50% dissipation.

The porepressures are plotted as a function of square root of (t). The graphical technique suggested by Robertson and Campanella (1989), yields a value for t50, which corresponds to the time for 50% consolidation.

The value of the coefficient of consolidation in the radial or horizontal direction ch was then calculated by Houlsby and Teh's (1988) theory using the following equation:

5.0 r h t IrT c where:

T: time factor given by Houlsby and Teh's (1988) theory corresponding to the porepressure position r: piezocone radius Ir: stiffness index, equal to shear modulus G divided by the undrained strength of clay (Su).

t50: time corresponding to 50% consolidation

Dissipation tests

Permeability estimates based on dissipation test The dissipation of pore pressures during a CPTu dissipation test is controlled by the coefficient of consolidation in the horizontal direction (ch) which is influenced by a combination of the soil permeability (kh) and compressibility (M), as defined by the following:

/Mck whh where: M is the 1-D constrained modulus and w is the unit weight of water, in compatible units.

M (tsf) kh

(ft/s)

CPT-23-24 15.70 5.5 30 9.53E-007 100.00 2.80E-004 8825 172.40 5.07E-008

CPT-23-24 50.00 12.4 153 4.85E-006 100.00 8.23E-005 2595 1290.58 1.99E-009

5CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:03:41 PM

This software is licensed to: Bureau Of Reclamation CPT name: CPT-23-24

Piezocone Dissipation Test: CPT-23-24 Elevation: 98.62 (ft) t^0.50 (s^0.50) 605550454035302520151050

5.483

Piezocone Dissipation Test: CPT-23-24 Elevation: 98.62 (ft) u0 = 2.16 (psi) u initial dissipation assumed initial pore pressure, ui

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

6CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:03:41 PM

Elevation: 80.32 (ft) t^0.50 (s^0.50) 605550454035302520151050

Piezocone Dissipation Test: CPT-23-24 Elevation: 80.32 (ft) u0 = 10.05 (psi)

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

7CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:03:41 PM

Elevation: 64.32 (ft) t^0.50 (s^0.50) 605550454035302520151050

12.372

Piezocone Dissipation Test: CPT-23-24 Elevation: 64.32 (ft) u0 = 17.01 (psi) u initial dissipation assumed initial pore pressure, ui

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

8CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:03:41 PM

Elevation: 49.12 (ft) t^0.50 (s^0.50) 605550454035302520151050

Piezocone Dissipation Test: CPT-23-24 Elevation: 49.12 (ft) u0 = 23.51 (psi)

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

9CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:03:41 PM

Elevation (ft)

Elevation (ft)

CP

eT

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P ro je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

To ta l d ep th

.9 ft

D at e:

/1

/2

Su rf ac e

El ev at io n:

.3 ft

Co or ds

N

.7

9, E

.3

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o

Elevation (ft)

Elevation (ft)

CP

eT

-I T v.

3.

9.

3.

C

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P ro je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

To ta l d ep th

.9 ft

D at e:

/1

/2

Su rf ac e

El ev at io n:

.3 ft

Co or ds

N

.7

9, E

.3

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o

SEISMIC TEST

Depth 5.02ft Ref*

Arrival 18.08mS Velocity*

Depth 10.01ft Ref 5.02ft

Arrival 29.69mS Velocity 345.78ft/S

Depth 14.99ft Ref 10.01ft

Arrival 37.07mS Velocity 619.41ft/S

Depth 20.01ft Ref 14.99ft

Arrival 43.40mS Velocity 758.05ft/S

Depth 25.00ft Ref 20.01ft

Arrival 50.15mS Velocity 717.77ft/S

Depth 30.02ft Ref 25.00ft

Arrival 54.84mS Velocity 1051.10ft/S

Depth 35.01ft Ref 30.02ft

Arrival 58.12mS Velocity 1499.64ft/S

Depth 39.99ft Ref 35.01ft

Arrival 61.48mS Velocity 1469.63ft/S

Depth 45.01ft Ref 39.99ft

Arrival 64.72mS Velocity 1536.19ft/S

Depth 50.00ft Ref 45.01ft

Arrival 67.89mS Velocity 1566.28ft/S

Depth 55.28ft Ref 50.00ft

Arrival 72.26mS Velocity 1201.23ft/S

Depth 60.04ft Ref 55.28ft

Arrival 75.85mS Velocity 1318.16ft/S

0 50 100 150 200 250

Depth 64.99ft Ref 60.04ft

Arrival 80.62mS Velocity 1035.82ft/S

Time (mS)

Hammer to Rod String Distance (ft): 5.35

Technical Service Center, Denver CO Cone Penetration Testing Results

Total depth: 57.48 ft, Date: 9/1/2023

Surface Elevation: 114.80 ft

Sack Dam and Arroyo Canal Headworks Rehabilitation

Coords: N 1816771.27, E 6561569.07

Cone Type: 15 cm^2

Cone Operator: Geo-Ex

Sounding: CPT-23-25

Location:

Cone resistance

Tip resistance (tsf) 4003002001000

Cone resistance Pore pressure

Pressure (psi) 300250200150100500

Pore pressure

Diss.

Diss.Diss.

Diss.

Diss.

Sleeve friction

Friction (tsf) 14121086420

CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:05:44 PM 1 je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

To ta l d ep th

.4 ft

D at e:

/1

/2

Su rf ac e

El ev at io n:

.8 ft

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

Co or ds

N

.2

7, E

.0

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o n

Elevation (ft)

Elevation (ft)

Elevation (ft)

S B

T le g en d 1.

Se ns iti ve f in e gr ai ne d

2.

O rg an ic m at er ia l

3.

Cl ay t o si lty c la y

4.

Cl ay ey s ilt t o si lty c la y

5.

Si lty s an d to s an dy s ilt

6.

Cl ea n sa nd t o si lty s an d

7.

G ra ve ly s an d to s an d

8.

Ve ry s tif f sa nd t o cl ay ey s an d

9.

Ve ry s tif f fin e gr ai ne d

Elevation (ft)

Elevation (ft)

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:4 je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

To ta l d ep th

.4 ft

D at e:

/1

/2

Su rf ac e

El ev at io n:

.8 ft

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

Co or ds

N

.2

7, E

.0

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o n

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

S B

Tn le g en d 1.

Se ns iti ve f in e gr ai ne d

2.

O rg an ic m at er ia l

3.

Cl ay t o si lty c la y

4.

Cl ay ey s ilt t o si lty c la y

5.

Si lty s an d to s an dy s ilt

6.

Cl ea n sa nd t o si lty s an d

7.

G ra ve ly s an d to s an d

8.

Ve ry s tif f sa nd t o cl ay ey s an d

9.

Ve ry s tif f fin e gr ai ne d

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:4 je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

To ta l d ep th

.4 ft

D at e:

/1

/2

Su rf ac e

El ev at io n:

.8 ft

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

Co or ds

N

.2

7, E

.0

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o n

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

M o d

S B

T n le g en d

1.

CC

S:

C la yL ik e

Co nt ra ct iv e, S en si tiv e

2.

CC

Cl ay -li ke

C on tr ac tiv e

3.

CD

Cl ay -L ik e:

D ila tiv e

4.

TC

Tr an si tio na l - C on tr ac tiv e

5.

TD

Tr an si tio na l - D ila tiv e

6.

SC

Sa nd -li ke

C on tr ac tiv e

7.

SD

Sa nd -li ke

D ila tiv e

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:4

Technical Service Center, Denver CO Cone Penetration Testing Results

Total depth: 57.48 ft, Date: 9/1/2023

Surface Elevation: 114.80 ft

Sack Dam and Arroyo Canal Headworks Rehabilitation

Coords: N 1816771.27, E 6561569.07

Cone Type: 15 cm^2

Cone Operator: Geo-Ex

Sounding: CPT-23-25

Location:

CPTU

Borehole

Depth (ft)

(t50)0.50 t50

(s) t50

(years) G/Su ch

(ft2/s) ch

(ft2/year)

T a b u l a r r e s u l t s

Dissipation Tests Results

Dissipation tests consists of stopping the piezocone penetration and observing porepressures (u) with elapsed time (t).

The data are automatic recorded by the field computer and should take place until a minimum of 50% dissipation.

The porepressures are plotted as a function of square root of (t). The graphical technique suggested by Robertson and Campanella (1989), yields a value for t50, which corresponds to the time for 50% consolidation.

The value of the coefficient of consolidation in the radial or horizontal direction ch was then calculated by Houlsby and Teh's (1988) theory using the following equation:

5.0 r h t IrT c where:

T: time factor given by Houlsby and Teh's (1988) theory corresponding to the porepressure position r: piezocone radius Ir: stiffness index, equal to shear modulus G divided by the undrained strength of clay (Su).

t50: time corresponding to 50% consolidation

Dissipation tests

Permeability estimates based on dissipation test The dissipation of pore pressures during a CPTu dissipation test is controlled by the coefficient of consolidation in the horizontal direction (ch) which is influenced by a combination of the soil permeability (kh) and compressibility (M), as defined by the following:

/Mck whh where: M is the 1-D constrained modulus and w is the unit weight of water, in compatible units.

M (tsf) kh

(ft/s)

CPT-23-25 44.30 33.6 1126 3.57E-005 100.00 7.47E-006 236 928.09 2.51E-010

5CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:05:45 PM

This software is licensed to: Bureau Of Reclamation CPT name: CPT-23-25

Piezocone Dissipation Test: CPT-23-25 Elevation: 105.65 (ft) t^0.50 (s^0.50) 757065605550454035302520151050

Piezocone Dissipation Test: CPT-23-25 Elevation: 105.65 (ft) u0 = 2.47 (psi)

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

6CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:05:45 PM

Elevation: 89.50 (ft) t^0.50 (s^0.50) 757065605550454035302520151050

Piezocone Dissipation Test: CPT-23-25 Elevation: 89.50 (ft) u0 = 9.38 (psi)

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

7CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:05:45 PM

Elevation: 89.44 (ft) t^0.50 (s^0.50) 757065605550454035302520151050

Piezocone Dissipation Test: CPT-23-25 Elevation: 89.44 (ft) u0 = 9.48 (psi)

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

8CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:05:45 PM

Elevation: 70.50 (ft) t^0.50 (s^0.50) 757065605550454035302520151050

33.555

Piezocone Dissipation Test: CPT-23-25 Elevation: 70.50 (ft) u0 = 17.63 (psi) u initial dissipation assumed initial pore pressure, ui

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

9CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:05:45 PM

Elevation: 57.30 (ft) t^0.50 (s^0.50) 757065605550454035302520151050

Piezocone Dissipation Test: CPT-23-25 Elevation: 57.30 (ft) u0 = 23.40 (psi)

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

10CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:05:45 PM

Elevation (ft)

Elevation (ft)

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:4

PM

P ro je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

To ta l d ep th

.4 ft

D at e:

/1

/2

Su rf ac e

El ev at io n:

.8 ft

Co or ds

N

.2

7, E

.0

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o

Elevation (ft)

Elevation (ft)

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:4

PM

P ro je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

To ta l d ep th

.4 ft

D at e:

/1

/2

Su rf ac e

El ev at io n:

.8 ft

Co or ds

N

.2

7, E

.0

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o

Technical Service Center, Denver CO Cone Penetration Testing Results

Total depth: 28.94 ft, Date: 8/31/2023

Surface Elevation: 117.11 ft

Sack Dam and Arroyo Canal Headworks Rehabilitation

Coords: N 1816733.73, E 6561668.72

Cone Type: 15 cm^2

Cone Operator: Geo-Ex

Sounding: CPT-23-26

Location:

Cone resistance

Tip resistance (tsf) 4003002001000

Cone resistance

Excessive Tip Pressure

Pore pressure

Pressure (psi) 300250200150100500

Pore pressure

Diss.

Diss.

Excessive Tip Pressure

Sleeve friction

Friction (tsf) 14121086420

Sleeve friction

Excessive Tip Pressure

CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:06:30 PM 1 je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

To ta l d ep th

.9 ft

D at e:

/3

1/

Su rf ac e

El ev at io n:

.1 ft

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

Co or ds

N

.7

3, E

.7

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o n

Elevation (ft)

Elevation (ft)

Elevation (ft)

S B

T le g en d 1.

Se ns iti ve f in e gr ai ne d

2.

O rg an ic m at er ia l

3.

Cl ay t o si lty c la y

4.

Cl ay ey s ilt t o si lty c la y

5.

Si lty s an d to s an dy s ilt

6.

Cl ea n sa nd t o si lty s an d

7.

G ra ve ly s an d to s an d

8.

Ve ry s tif f sa nd t o cl ay ey s an d

9.

Ve ry s tif f fin e gr ai ne d

Elevation (ft)

Elevation (ft)

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:3 je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

To ta l d ep th

.9 ft

D at e:

/3

1/

Su rf ac e

El ev at io n:

.1 ft

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

Co or ds

N

.7

3, E

.7

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o n

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

S B

Tn le g en d 1.

Se ns iti ve f in e gr ai ne d

2.

O rg an ic m at er ia l

3.

Cl ay t o si lty c la y

4.

Cl ay ey s ilt t o si lty c la y

5.

Si lty s an d to s an dy s ilt

6.

Cl ea n sa nd t o si lty s an d

7.

G ra ve ly s an d to s an d

8.

Ve ry s tif f sa nd t o cl ay ey s an d

9.

Ve ry s tif f fin e gr ai ne d

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:3 je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

To ta l d ep th

.9 ft

D at e:

/3

1/

Su rf ac e

El ev at io n:

.1 ft

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

Co or ds

N

.7

3, E

.7

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o n

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

M o d

S B

T n le g en d

1.

CC

S:

C la yL ik e

Co nt ra ct iv e, S en si tiv e

2.

CC

Cl ay -li ke

C on tr ac tiv e

3.

CD

Cl ay -L ik e:

D ila tiv e

4.

TC

Tr an si tio na l - C on tr ac tiv e

5.

TD

Tr an si tio na l - D ila tiv e

6.

SC

Sa nd -li ke

C on tr ac tiv e

7.

SD

Sa nd -li ke

D ila tiv e

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:3

Technical Service Center, Denver CO Cone Penetration Testing Results

Total depth: 28.94 ft, Date: 8/31/2023

Surface Elevation: 117.11 ft

Sack Dam and Arroyo Canal Headworks Rehabilitation

Coords: N 1816733.73, E 6561668.72

Cone Type: 15 cm^2

Cone Operator: Geo-Ex

Sounding: CPT-23-26

Location:

CPTU

Borehole

Depth (ft)

(t50)0.50 t50

(s) t50

(years) G/Su ch

(ft2/s) ch

(ft2/year)

T a b u l a r r e s u l t s

Dissipation Tests Results

Dissipation tests consists of stopping the piezocone penetration and observing porepressures (u) with elapsed time (t).

The data are automatic recorded by the field computer and should take place until a minimum of 50% dissipation.

The porepressures are plotted as a function of square root of (t). The graphical technique suggested by Robertson and Campanella (1989), yields a value for t50, which corresponds to the time for 50% consolidation.

The value of the coefficient of consolidation in the radial or horizontal direction ch was then calculated by Houlsby and Teh's (1988) theory using the following equation:

5.0 r h t IrT c where:

T: time factor given by Houlsby and Teh's (1988) theory corresponding to the porepressure position r: piezocone radius Ir: stiffness index, equal to shear modulus G divided by the undrained strength of clay (Su).

t50: time corresponding to 50% consolidation

Dissipation tests

Permeability estimates based on dissipation test The dissipation of pore pressures during a CPTu dissipation test is controlled by the coefficient of consolidation in the horizontal direction (ch) which is influenced by a combination of the soil permeability (kh) and compressibility (M), as defined by the following:

/Mck whh where: M is the 1-D constrained modulus and w is the unit weight of water, in compatible units.

M (tsf) kh

(ft/s)

CPT-23-26 15.80 9.9 98 3.10E-006 100.00 1.29E-004 4065 1353.11 2.97E-009

5CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:06:31 PM

This software is licensed to: Bureau Of Reclamation CPT name: CPT-23-26

Piezocone Dissipation Test: CPT-23-26 Elevation: 101.31 (ft) t^0.50 (s^0.50) 605550454035302520151050

9.885

Piezocone Dissipation Test: CPT-23-26 Elevation: 101.31 (ft) u0 = 5.67 (psi) u initial dissipation assumed initial pore pressure, ui

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

6CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:06:31 PM

This software is licensed to: Bureau Of Reclamation CPT name: CPT-23-26

Piezocone Dissipation Test: CPT-23-26 Elevation: 88.61 (ft) t^0.50 (s^0.50) 605550454035302520151050

Piezocone Dissipation Test: CPT-23-26 Elevation: 88.61 (ft) u0 = 11.13 (psi)

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

7CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:06:31 PM

Elevation (ft)

Elevation (ft)

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:3

PM

P ro je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

To ta l d ep th

.9 ft

D at e:

/3

1/

Su rf ac e

El ev at io n:

.1 ft

Co or ds

N

.7

3, E

.7

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o

Elevation (ft)

Elevation (ft)

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:3

PM

P ro je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

To ta l d ep th

.9 ft

D at e:

/3

1/

Su rf ac e

El ev at io n:

.1 ft

Co or ds

N

.7

3, E

.7

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o

Technical Service Center, Denver CO Cone Penetration Testing Results

Total depth: 72.11 ft, Date: 8/30/2023

Surface Elevation: 115.02 ft

Sack Dam and Arroyo Canal Headworks Rehabilitation

Coords: N 1816759.41, E 6561743.87

Cone Type: 15 cm^2

Cone Operator: Geo-Ex

Sounding: CPT-23-27

Location:

Cone resistance

Tip resistance (tsf) 4003002001000

Cone resistance Pore pressure

Pressure (psi) 300250200150100500

Pore pressure

Diss.

Diss.

Diss.

Diss.

Diss.

Sleeve friction

Friction (tsf) 14121086420

CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:07:01 PM 1 je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

To ta l d ep th

.1 ft

D at e:

/3

0/

Su rf ac e

El ev at io n:

.0 ft

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

Co or ds

N

.4

1, E

.8

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o n

Elevation (ft)

Elevation (ft)

Elevation (ft)

S B

T le g en d 1.

Se ns iti ve f in e gr ai ne d

2.

O rg an ic m at er ia l

3.

Cl ay t o si lty c la y

4.

Cl ay ey s ilt t o si lty c la y

5.

Si lty s an d to s an dy s ilt

6.

Cl ea n sa nd t o si lty s an d

7.

G ra ve ly s an d to s an d

8.

Ve ry s tif f sa nd t o cl ay ey s an d

9.

Ve ry s tif f fin e gr ai ne d

Elevation (ft)

Elevation (ft)

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:0 je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

To ta l d ep th

.1 ft

D at e:

/3

0/

Su rf ac e

El ev at io n:

.0 ft

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

Co or ds

N

.4

1, E

.8

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o n

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

S B

Tn le g en d 1.

Se ns iti ve f in e gr ai ne d

2.

O rg an ic m at er ia l

3.

Cl ay t o si lty c la y

4.

Cl ay ey s ilt t o si lty c la y

5.

Si lty s an d to s an dy s ilt

6.

Cl ea n sa nd t o si lty s an d

7.

G ra ve ly s an d to s an d

8.

Ve ry s tif f sa nd t o cl ay ey s an d

9.

Ve ry s tif f fin e gr ai ne d

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:0 je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

To ta l d ep th

.1 ft

D at e:

/3

0/

Su rf ac e

El ev at io n:

.0 ft

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

Co or ds

N

.4

1, E

.8

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o n

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

M o d

S B

T n le g en d

1.

CC

S:

C la yL ik e

Co nt ra ct iv e, S en si tiv e

2.

CC

Cl ay -li ke

C on tr ac tiv e

3.

CD

Cl ay -L ik e:

D ila tiv e

4.

TC

Tr an si tio na l - C on tr ac tiv e

5.

TD

Tr an si tio na l - D ila tiv e

6.

SC

Sa nd -li ke

C on tr ac tiv e

7.

SD

Sa nd -li ke

D ila tiv e

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:0

Technical Service Center, Denver CO Cone Penetration Testing Results

Total depth: 72.11 ft, Date: 8/30/2023

Surface Elevation: 115.02 ft

Sack Dam and Arroyo Canal Headworks Rehabilitation

Coords: N 1816759.41, E 6561743.87

Cone Type: 15 cm^2

Cone Operator: Geo-Ex

Sounding: CPT-23-27

Location:

CPTU

Borehole

Depth (ft)

(t50)0.50 t50

(s) t50

(years) G/Su ch

(ft2/s) ch

(ft2/year)

T a b u l a r r e s u l t s

Dissipation Tests Results

Dissipation tests consists of stopping the piezocone penetration and observing porepressures (u) with elapsed time (t).

The data are automatic recorded by the field computer and should take place until a minimum of 50% dissipation.

The porepressures are plotted as a function of square root of (t). The graphical technique suggested by Robertson and Campanella (1989), yields a value for t50, which corresponds to the time for 50% consolidation.

The value of the coefficient of consolidation in the radial or horizontal direction ch was then calculated by Houlsby and Teh's (1988) theory using the following equation:

5.0 r h t IrT c where:

T: time factor given by Houlsby and Teh's (1988) theory corresponding to the porepressure position r: piezocone radius Ir: stiffness index, equal to shear modulus G divided by the undrained strength of clay (Su).

t50: time corresponding to 50% consolidation

Dissipation tests

Permeability estimates based on dissipation test The dissipation of pore pressures during a CPTu dissipation test is controlled by the coefficient of consolidation in the horizontal direction (ch) which is influenced by a combination of the soil permeability (kh) and compressibility (M), as defined by the following:

/Mck whh where: M is the 1-D constrained modulus and w is the unit weight of water, in compatible units.

M (tsf) kh

(ft/s)

CPT-23-27 71.80 3.7 14 4.40E-007 100.00 6.06E-004 19113 148.50 1.27E-007

5CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:07:02 PM

This software is licensed to: Bureau Of Reclamation CPT name: CPT-23-27

Piezocone Dissipation Test: CPT-23-27 Elevation: 91.52 (ft) t^0.50 (s^0.50) 605550454035302520151050

Piezocone Dissipation Test: CPT-23-27 Elevation: 91.52 (ft) u0 = 2.89 (psi)

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

6CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:07:02 PM

Elevation: 70.42 (ft) t^0.50 (s^0.50) 605550454035302520151050

Piezocone Dissipation Test: CPT-23-27 Elevation: 70.42 (ft) u0 = 12.06 (psi)

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

7CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:07:02 PM

Elevation: 59.42 (ft) t^0.50 (s^0.50) 605550454035302520151050

Piezocone Dissipation Test: CPT-23-27 Elevation: 59.42 (ft) u0 = 16.80 (psi)

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

8CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:07:02 PM

Elevation: 48.82 (ft) t^0.50 (s^0.50) 605550454035302520151050

Piezocone Dissipation Test: CPT-23-27 Elevation: 48.82 (ft) u0 = 21.44 (psi)

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

9CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:07:02 PM

Elevation: 43.22 (ft) t^0.50 (s^0.50) 605550454035302520151050

3.726

Piezocone Dissipation Test: CPT-23-27 Elevation: 43.22 (ft) u0 = 23.92 (psi) u initial dissipation assumed initial pore pressure, ui

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

10CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:07:02 PM

Elevation (ft)

Elevation (ft)

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:0

PM

P ro je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

To ta l d ep th

.1 ft

D at e:

/3

0/

Su rf ac e

El ev at io n:

.0 ft

Co or ds

N

.4

1, E

.8

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o

Elevation (ft)

Elevation (ft)

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:0

PM

P ro je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

To ta l d ep th

.1 ft

D at e:

/3

0/

Su rf ac e

El ev at io n:

.0 ft

Co or ds

N

.4

1, E

.8

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o

Technical Service Center, Denver CO Cone Penetration Testing Results

Sack Dam and Arroyo Canal Headworks Rehabilitation

Total depth: 36.35 ft, Date: / /2023

Surface Elevation: 115.35 ft

Coords: N 1816688.09, E 6561840.35

Cone Type: 15 cm^2

Cone Operator: Geo-Ex

Sounding: CPT-23-28

Location:

Cone resistance

Tip resistance (tsf) 4003002001000

Cone resistance

Excessive Tip Pressure

Pore pressure

Pressure (psi) 300250200150100500

Pore pressure

Diss.

Excessive Tip Pressure

Sleeve friction

Friction (tsf) 14121086420

Sleeve friction

Excessive Tip Pressure

CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:07:40 PM 1 je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

To ta l d ep th

.3 ft

D at e:

/2

Su rf ac e

El ev at io n:

.3 ft

Co or ds

N

.0

9, E

.3

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o n

Elevation (ft)

Elevation (ft)

Elevation (ft)

S B

T le g en d 1.

Se ns iti ve f in e gr ai ne d

2.

O rg an ic m at er ia l

3.

Cl ay t o si lty c la y

4.

Cl ay ey s ilt t o si lty c la y

5.

Si lty s an d to s an dy s ilt

6.

Cl ea n sa nd t o si lty s an d

7.

G ra ve ly s an d to s an d

8.

Ve ry s tif f sa nd t o cl ay ey s an d

9.

Ve ry s tif f fin e gr ai ne d

Elevation (ft)

Elevation (ft)

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:4 je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

To ta l d ep th

.3 ft

D

Su rf ac e

El ev at io n:

.3 ft

Co or ds

N

.0

9, E

.3

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o n

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

S B

Tn le g en d 1.

Se ns iti ve f in e gr ai ne d

2.

O rg an ic m at er ia l

3.

Cl ay t o si lty c la y

4.

Cl ay ey s ilt t o si lty c la y

5.

Si lty s an d to s an dy s ilt

6.

Cl ea n sa nd t o si lty s an d

7.

G ra ve ly s an d to s an d

8.

Ve ry s tif f sa nd t o cl ay ey s an d

9.

Ve ry s tif f fin e gr ai ne d

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:4 je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

To ta l d ep th

.3 ft

D

Su rf ac e

El ev at io n:

.3 ft

Co or ds

N

.0

9, E

.3

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o n

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

Elevation (ft)

M o d

S B

T n le g en d

1.

CC

S:

C la yL ik e

Co nt ra ct iv e, S en si tiv e

2.

CC

Cl ay -li ke

C on tr ac tiv e

3.

CD

Cl ay -L ik e:

D ila tiv e

4.

TC

Tr an si tio na l - C on tr ac tiv e

5.

TD

Tr an si tio na l - D ila tiv e

6.

SC

Sa nd -li ke

C on tr ac tiv e

7.

SD

Sa nd -li ke

D ila tiv e

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:4

This software is licensed to: Bureau Of Reclamation CPT name: CPT-23-28

Piezocone Dissipation Test: CPT-23-28 Elevation: 85.75 (ft) t^0.50 (s^0.50) 605550454035302520151050

Piezocone Dissipation Test: CPT-23-28 Elevation: 85.75 (ft) u0 = 9.33 (psi)

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

6CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:07:41 PM

This software is licensed to: Bureau Of Reclamation CPT name: CPT-23-28

Piezocone Dissipation Test: CPT-23-28 Elevation: 79.05 (ft) t^0.50 (s^0.50) 605550454035302520151050

Piezocone Dissipation Test: CPT-23-28 Elevation: 79.05 (ft) u0 = 12.22 (psi)

Pore pressure

Pressure (psi) 300250200150100500 u2 penetration Initial dissipation End of dissipation (extrapolated) Initial estimated at t=0

7CPeT-IT v.3.9.3.10 - CPTU data presentation & interpretation software - Report created on: 12/15/2023, 2:07:41 PM

Elevation (ft)

Elevation (ft)

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:4

PM

P ro je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

To ta l d ep th

.3 ft

D

Su rf ac e

El ev at io n:

.3 ft

Co or ds

N

.0

9, E

.3

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o

Elevation (ft)

Elevation (ft)

CP

eT

-I T v.

3.

9.

3.

C

PT

U d at a pr es en ta tio n in te rp re ta tio n so ft w ar e

R ep or t cr ea te d on

/1

5/

2:

:4

PM

P ro je ct

S an J o aq u in

R iv er R es to ra ti o n

P ro g ra m

G eo te ch n ic al L ab o ra to ry a n d

F ie ld S u p p o rt Te ch ni ca l S er vi ce C en te r, D en ve r C O

Co ne

P en et ra tio n

Te st in g

R es ul ts

S a ck D a m a n d A rr o yo C an a l H ea d w o rk s R eh a b ili ta ti o n

To ta l d ep th

.3 ft

D

Su rf ac e

El ev at io n:

.3 ft

Co or ds

N

.0

9, E

.3

Co ne

T yp e:

cm

Co ne

O pe ra to r:

G eo -E x

S o u n d in g

C P

T -2

-2

Lo ca ti o