*** Primary Characterization Data ***

Pedon ID: S1973CA001002

( Alameda, California )

Print Date: Dec 11 2024 4:06PM

Sampled as on May 30, 1973:	Alviso
Revised to SSL:	(unnamed) ; Fine, mixed, acid, isomesic Sulfic Hydraquent

				United States Department of Agriculture
SSL	-	Project	NL73CA003   ALAMEDA-SNT CRUZ	Natural Resources Conservation Service
	-	Site ID	S1973CA001002	National Soil Survey Center
	-	Pedon No.	73C0021	Soil Survey Laboratory
	-	General Methods 1B1A, 2A1, 2B		Lincoln, Nebraska 68508-3866

---

Layer	Horizon	Orig Hzn	Depth (cm)	Field Label 1	Field Label 2	Field Label 3	Field Texture	Lab Texture
73C00144	A	A1	0-15	73144			SIC	C
73C00145	C1	C1	15-45	73145			SIC	SIC
73C00146	C2	C2	45-59	73146			SIC	SIC
73C00147	C3	C3	59-107	73147			SIC	SIC
73C00148	C4	C4	107-183	73148			SIC	SICL

---

Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	0.72	(NA)
Clay, carbonate free, Weighted Average	43	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	1	% wt
Volume, >2mm, Weighted Average	0	% vol
Clay, total, Weighted Average	43	% wt
LE, Whole Soil, Summed to 1m	20	cm/m
Weighted averages based on control section: 25-100 cm

---

PSDA  &  Rock Fragments				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-	-15-	-16-	-17-	-18-
					(- - - - - Total - - - - - -)			(- - Clay - - -)		(- - - - Silt - - - - -)		(- - - - - - - - - - - - Sand - - - - - - - - - - - -)					( Rock Fragments   (mm) )
				Lab	Clay	Silt	Sand	Fine	CO3	Fine	Coarse	VF	F	M	C	VC	(- - - - - - - - Weight - - - - - - - -)				>2 mm
				Text-	<	.002	.05	<	<	.002	.02	.05	.10	.25	.5	1	2	5	20	.1-	wt %
	Depth			ure	.002	-.05	-2	.0002	.002	-.02	-.05	-.10	-.25	-.50	-1	-2	-5	-20	-75	75	whole
Layer	(cm)	Horz	Prep		(- - - - - - - - - - - - - - - - - - - - - - - - - - % of <2mm Mineral Soil - - - - - - - - - - - - - - - - - - - - - - - - - - -)												(- - - - - - - % of <75mm - - - - - -)				soil
				3A1a1a	3A1a1a	3A1a1a	3A1a1a			3A1a1a	3A1a1a	3A1a1a	3A1a1a	3A1a1a	3A1a1a	3A1a1a	3B1	3B1	3B1
73C00144	0-15	A	S	c	58.8	36.7	4.5			32.9	3.8	1.1	1.2	0.4	0.7	1.1	--	--	--	3	--
73C00145	15-45	C1	S	sic	45.8	50.9	3.3			32.0	18.9	2.2	0.4	0.1	0.4	0.2	--	--	--	1	--
73C00146	45-59	C2	S	sic	45.6	52.0	2.4			37.5	14.5	1.2	0.4	0.1	0.5	0.2	--	--	--	1	--
73C00147	59-107	C3	S	sic	41.3	56.0	2.7			36.9	19.1	2.0	0.4	0.1	0.2	--	--	--	--	1	--
73C00148	107-183	C4	S	sicl	39.1	57.4	3.5			35.6	21.8	2.5	0.5	0.1	0.3	0.1	--	--	--	1	--

*** Primary Characterization Data ***

Pedon ID: S1973CA001002

( Alameda, California )

Print Date: Dec 11 2024 4:06PM

Sampled As	:	Alviso
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  73C0021

---

Bulk Density  &  Moisture				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-
				(Bulk Density)		Cole	(- - - - - - - - - - - Water Content - - - - - - - - - - -)					( Air Dry-Oven Dry )		WRD	Aggst
				33	Oven	Whole	6	10	33	1500	1500 kPa	(- - - - Ratio - - - -)		Whole	Stabl	(- - Ratio/Clay - -)
	Depth			kPa	Dry	Soil	kPa	kPa	kPa	kPa	Moist		Corrected	Soil	2-0.5mm	CEC7	1500 kPa
Layer	(cm)	Horz	Prep	(- - - g cm-3 - - -)			(- - - - - - - - - - - - pct of < 2mm - - - - - - - - - - - -)							cm3 cm-3	%
				4A1d	4A1h			4B1c	4B1c	3C2a1a		3D1		4C1		8D1	8D1
73C00144	0-15	A	S	0.52	1.17	0.310		166.6	139.2	33.8		1.038		0.55		0.73	0.57
73C00145	15-45	C1	S	0.85	1.36	0.170		95.0	77.1	25.4		1.038		0.44		0.67	0.55
73C00146	45-59	C2	S	0.77	1.36	0.209		109.7	88.5	27.3		1.038		0.47		0.75	0.60
73C00147	59-107	C3	S	0.93	1.51	0.175		82.5	69.7	23.6		1.038		0.43		0.73	0.57
73C00148	107-183	C4	S	0.86	1.33	0.156		88.1	77.1	21.3		1.038		0.48		0.68	0.54

---

Carbon  &  Extractions				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-	-15-	-16-	-17-	-18-	-19-
				(- - - - - Total - - - - -)			Est	OC	C/N	(- - - Dith-Cit Ext - - -)			(- - - - - - Ammonium Oxalate Extraction - - - - - -)						(- - - Na Pyro-Phosphate - - -)
	Depth			C	N	S	OC	(WB)	Ratio	Fe	Al	Mn	Al+½Fe	ODOE	Fe	Al	Si	Mn	C	Fe	Al	Mn
Layer	(cm)	Horz	Prep	(- - - - - - - - - - % of <2 mm - - - - - - - - - -)						(- - - - - - - - - - - - - - - - - - - % of < 2mm - - - - - - - - - - - - - - - - -)								mg kg-1	(- - - - - - % of < 2mm - - - - -)
					6B3a			6A1c		6C2b	6G7a
73C00144	0-15	A	S		0.357			4.17	12	1.4	0.2
73C00145	15-45	C1	S		0.205			3.10	15	0.6	0.1
73C00146	45-59	C2	S		0.295			4.13	14	0.5	0.1
73C00147	59-107	C3	S		0.191			1.81	9	0.7	0.1
73C00148	107-183	C4	S		0.178			2.61	15	0.4	0.1

---

CEC  &  Bases				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-
				(- - - - - - NH4OAC Extractable Bases - - - - -)								CEC8	CEC7	ECEC		(- - - - Base - - - -)
								Sum	Acid-	Extr	KCl	Sum	NH4	Bases	Al	(- Saturation -)
	Depth			Ca	Mg	Na	K	Bases	ity	Al	Mn	Cats	OAC	+Al	Sat	Sum	NH4OAC
Layer	(cm)	Horz	Prep	(- - - - - - - - - - - - - - - - - cmol(+) kg-1 - - - - - - - - - - - - - - - - - - -)							mg kg-1	(- - - - cmol(+) kg-1 - - -)			(- - - - - - - - % - - - - - - - -)
				6N2e	6O2d	6P2b	6Q2b			6G9b		5A3a	5A8b	5A3b	5G1	5C3	5C1
73C00144	0-15	A	S	14.5*	33.9	114.3	5.6	168.3				168.3	43.0			100	100
73C00145	15-45	C1	S	10.1*	26.0	86.2	4.5	126.8		0.2		126.8	30.9	127.0	tr	100	100
73C00146	45-59	C2	S	9.1*	30.0	94.9	4.6	138.6				138.6	34.1			100	100
73C00147	59-107	C3	S	10.0*	19.4	66.9	4.3	100.6				100.6	30.0			100	100
73C00148	107-183	C4	S	9.2*	24.6	71.7	4.3	109.8		0.3		109.8	26.4	110.1	tr	100	100

^*Extractable Ca may contain Ca from calcium carbonate or gypsum., CEC7 base saturation set to 100.

*** Primary Characterization Data ***

Pedon ID: S1973CA001002

( Alameda, California )

Print Date: Dec 11 2024 4:06PM

Sampled As	:	Alviso
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  73C0021

---

Salt				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-	-15-	-16-	-17-	-18-	-19-	-20-
				(- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Water Extracted From Saturated Paste - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -)																	1:2
																			Total	Elec	Elec	Exch
	Depth			Ca	Mg	Na	K	CO3	HCO3	F	Cl	PO4	Br	OAC	SO4	NO2	NO3	H2O	Salts	Cond	Cond	Na	SAR
Layer	(cm)	Horz	Prep	(- - - - - mmol(+) L-1 - - - - -)				(- - - - - - - - - - - - - - - - - - - - - - mmol(-) L-1 - - - - - - - - - - - - - - - - - - - -)										(- - - - % - - - -)		(- - dS m-1 - -)		%
				6N1b	6O1b	6P1b	6Q1b		6J1b		6K1c				6L1c			8A	8D5	8A3a			5E
73C00144	0-15	A	S	51.5	197.3	793.0	14.2		12.5		833.0				116.2			120.9	9.3	80.45		43	71
73C00145	15-45	C1	S	49.8	43.1	862.0	18.6		1.9		964.0				216.7			86.4	6.9	83.04		38	126
73C00146	45-59	C2	S	49.8	251.7	892.0	17.0		5.7		1014.0				167.4			95.4	8.1	88.23		29	73
73C00147	59-107	C3	S	28.9	122.5	638.0	13.0		8.0		736.0				66.6			87.6	8.1	96.02		37	73
73C00148	107-183	C4	S	47.4	288.0	902.0	19.5		3.0		918.0				254.1			76.6	6.7	91.02		10	70

---

pH  &  Carbonates

-1-

-2-

-3-

-4-

-5-

-6-

-7-

-8-

-9-

-10-

-11-

(- - - - - - - - - - - - - - - - - - pH - - - - - - - - - - - - - - - - -)

(- - Carbonate - -)

(- - Gypsum - - -)

CaCl2

As CaCO3

As CaSO4*2H2O

Resist

Depth

0.01M

H2O

Sat

<2mm

<20mm

<2mm

<20mm

ohms

Layer

(cm)

Horz

Prep

KCl

1:2

1:1

Paste

Oxid

NaF

(- - - - - - - - - - - - % - - - - - - - - - - -)

cm-1

4C1a2a

4C1a2a

8C1b

4E2a1a1a1

73C00144

0-15

A

S

6.9

6.8

6.5

tr

73C00145

15-45

C1

S

4.7

4.7

3.8

73C00146

45-59

C2

S

6.0

6.0

5.5

tr

73C00147

59-107

C3

S

7.6

7.6

7.0

tr

73C00148

107-183

C4

S

4.8

4.7

3.7

tr

---

Miscellaneous Data

-1-

-2-

-3-

-4-

-5-

-6-

-7-

-8-

-9-

-10-

-11-

-12-

-13-

-14-

(- Sat Paste Ex. -)

(- Sand -)

( Water Content )

Bulk

(- - - - Extractable Bases - - - -)

(- - - CEC8 - - -)

CO3+

(- - - pH - - -)

M+C+VC

Moist Sieved

Density

Depth

Ca

Mg

Na

K

NaOAC

BaCl2

Ca+Mg

HCO3

CaCl2

H2O

.25-2

100 kPa

200 kPa

10 kPa

Layer

(cm)

Horz

Prep

(- - - - - - - - - - - - - - - cmol(+)kg-1 - - - - - - - - - - - - - -)

mmol(+)L-1

mmol(-)L-1

1:10

1:10

(- - - - - % of <2mm - - - - -)

g cm-3

NK

73C00144

0-15

A

S

7.2

73C00145

15-45

C1

S

4.2

73C00146

45-59

C2

S

6.1

73C00147

59-107

C3

S

7.7

73C00148

107-183

C4

S

4.3

*** Primary Characterization Data ***

Pedon ID: S1973CA001002

( Alameda, California )

Print Date: Dec 11 2024 4:06PM

Sampled As	:	Alviso
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  73C0021

---

Clay Mineralogy (<.002 mm)

-1-

-2-

-3-

-4-

-5-

-6-

-7-

-8-

-9-

-10-

-11-

-12-

-13-

-14-

-15-

-16-

-17-

-18-

X-Ray

Thermal

Elemental

EGME

Inter

SiO2

Al2O3

Fe2O3

MgO

CaO

K2O

Na2O

Retn

preta

Depth

Fract

7A2i

tion

Layer

(cm)

Horz

ion

( - - - - - - - - - peak size - - - - - - - - - - )

(- - - - - - - - - % - - - - - - - - - -)

(- - - - - - - - - - - - - - - - - - - - - % - - - - - - - - - - - - - - - - - - - - -)

mg g-1

73C00144

0.0-15.0

A

tcly

MT 2

MI 2

KK 2

73C00147

59.0-107.0

C3

tcly

MT 2

MI 2

KK 2

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm

MINERAL INTERPRETATION:
KK Kaolinite	MI Mica	MT Montmorillonite

RELATIVE PEAK SIZE:

5 Very Large

4 Large

3 Medium

2 Small

1 Very Small

6 No Peaks