*** Primary Characterization Data ***

Pedon ID: S1972CA013002

( Contra Costa, California )

Print Date: Nov 21 2024 12:04PM

Sampled as on Apr 8, 1972:	Los Osos
Revised to correlated:	unnamed ; Fine, montmorillonitic, thermic Typic Argixerolls

				United States Department of Agriculture
SSL	-	Project	NL71CA001   CONTRA COSTA ARE	Natural Resources Conservation Service
	-	Site ID	S1972CA013002	National Soil Survey Center
	-	Pedon No.	72C0004	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
72C00023	A1	A11	0-15	7223			SIC	SICL
72C00024	A2	A12	15-33	7224			C	SIC
72C00025	B1	B21	33-66	7225			C	SIC
72C00026	B2	B22	66-97	7226			C	SICL
72C00027	C1	C 1	97-142	7227				SIL
72C00028	C2	C 2	142-188	7228				SIL
72C00029	C3	C 3	188-249	7229				SIL

---

Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	0.95	(NA)
Clay, carbonate free, Weighted Average	40	% wt
Volume, >2mm, Weighted Average	0	% vol
Clay, total, Weighted Average	40	% wt
LE, Whole Soil, Summed to 1m	7	cm/m
Weighted averages based on control section: 33-83 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
72C00023	0-15	A1	GP	sicl	37.4	47.5	15.1			31.6	15.9	7.8	5.2	1.1	0.6	0.4
72C00024	15-33	A2	GP	sic	40.1	46.3	13.6			30.9	15.4	7.8	4.3	0.9	0.4	0.2
72C00025	33-66	B1	GP	sic	40.7	46.2	13.1			31.0	15.2	7.5	4.2	0.8	0.4	0.2
72C00026	66-97	B2	GP	sicl	38.1	51.3	10.6			35.7	15.6	6.4	2.8	0.7	0.5	0.2
72C00027	97-142	C1	GP	sil	16.9	53.7	29.4			34.8	18.9	14.0	12.2	1.2	1.1	0.9
72C00028	142-188	C2	GP	sil	23.4	62.3	14.3			43.8	18.5	7.2	3.8	1.4	1.3	0.6
72C00029	188-249	C3	GP	sil	16.4	75.9	7.7			51.1	24.8	4.5	0.9	0.6	1.0	0.7

*** Primary Characterization Data ***

Pedon ID: S1972CA013002

( Contra Costa, California )

Print Date: Nov 21 2024 12:04PM

Sampled As	:	Los Osos
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  72C0004

---

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
72C00023	0-15	A1	S	1.36	1.61	0.058		26.3	24.3					0.15		0.89	0.36
72C00023	0-15	A1	GP							13.5		1.040
72C00024	15-33	A2	S	1.44	1.74	0.065		27.8	23.8					0.15		0.91	0.34
72C00024	15-33	A2	GP							13.6		1.040
72C00025	33-66	B1	S	1.49	1.84	0.073		27.1	23.5					0.14		0.91	0.34
72C00025	33-66	B1	GP							13.8		1.040
72C00026	66-97	B2	S	1.50	1.87	0.076		27.0	23.9					0.14		1.01	0.38
72C00026	66-97	B2	GP							14.6		1.040
72C00027	97-142	C1	S	1.55	1.83	0.057		23.7	21.9					0.18		1.73	0.62
72C00027	97-142	C1	GP							10.4		1.040
72C00028	142-188	C2	S	1.59	1.85	0.052		23.1	21.0					0.11		1.54	0.59
72C00028	142-188	C2	GP							13.8		1.040
72C00029	188-249	C3	S	1.88	2.09	0.036		14.9	14.7					0.04		1.93	0.76
72C00029	188-249	C3	GP							12.4		1.040

---

Water Content				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-
				(- - Atterberg - -)		(- - - - - Bulk Density - - - - -)			(- - - - - - - - - - - - - - - - - - - - - - - Water Content - - - - - - - - - - - - - - - - - - - - -)
				(- - - Limits - - -)		Field	Recon	Recon	Field	Recon	(- - - - - - - - - - - - - - Sieved Samples - - - - - - - - - - - - -)
				LL	PI		33	Oven		33	6	10	33	100	200	500
	Depth						kPa	Dry		kPa	kPa	kPa	kPa	kPa	kPa	kPa
Layer	(cm)	Horz	Prep	pct <0.4mm		(- - - - - - - - g cm-3 - - - - - - -)			(- - - - - - - - - - - - - - - - - - - - - - - % of < 2mm - - - - - - - - - - - - - - - - - - - - - -)
				4F1	4F
72C00023	0-15	A1	GP	38.60999	15
72C00025	33-66	B1	GP	46.71799	28
72C00026	66-97	B2	GP	40.71298	17
72C00027	97-142	C1	GP	29.4	8
72C00029	188-249	C3	GP	35.38799	9

*** Primary Characterization Data ***

Pedon ID: S1972CA013002

( Contra Costa, California )

Print Date: Nov 21 2024 12:04PM

Sampled As	:	Los Osos
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  72C0004

---

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

72C00023

0-15

A1

GP

0.113

1.25

11

72C00024

15-33

A2

GP

0.073

0.85

12

72C00025

33-66

B1

GP

0.048

0.56

12

72C00026

66-97

B2

GP

0.34

72C00027

97-142

C1

GP

0.08

72C00028

142-188

C2

GP

0.10

72C00029

188-249

C3

GP

0.10

---

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		6H5a			5A3a	5A8b			5C3	5C1
72C00023	0-15	A1	GP	14.3	13.6	0.6	0.6	29.1	7.0			36.1	33.2			81	88
72C00024	15-33	A2	GP	14.3	16.6	0.6	0.4	31.9	6.2			38.1	36.4			84	88
72C00025	33-66	B1	GP	14.6	17.7	0.6	0.4	33.3	4.2			37.5	37.1			89	90
72C00026	66-97	B2	GP	13.4	18.3	0.6	0.3	32.6	3.2			35.8	38.5			91	85
72C00027	97-142	C1	GP	8.2	14.7	0.7	0.2	23.8	--			23.8	29.2			100	82
72C00028	142-188	C2	GP	11.7	19.8	1.0	0.3	32.8	2.7			35.5	36.1			92	91
72C00029	188-249	C3	GP	11.1	17.7	1.2	0.3	30.3	--			30.3	31.7			100	96

*** Primary Characterization Data ***

Pedon ID: S1972CA013002

( Contra Costa, California )

Print Date: Nov 21 2024 12:04PM

Sampled As	:	Los Osos
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  72C0004

---

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 - -)

%

72C00023

0-15

A1

GP

2

72C00024

15-33

A2

GP

2

72C00025

33-66

B1

GP

2

72C00026

66-97

B2

GP

2

72C00027

97-142

C1

GP

2

72C00028

142-188

C2

GP

3

72C00029

188-249

C3

GP

4

---

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

72C00023

0-15

A1

GP

5.3

5.7

72C00024

15-33

A2

GP

5.5

5.8

72C00025

33-66

B1

GP

5.9

5.9

72C00026

66-97

B2

GP

6.3

6.3

72C00027

97-142

C1

GP

6.3

6.4

72C00028

142-188

C2

GP

6.5

6.7

72C00029

188-249

C3

GP

6.5

7.2

*** Primary Characterization Data ***

Pedon ID: S1972CA013002

( Contra Costa, California )

Print Date: Nov 21 2024 12:04PM

Sampled As	:	Los Osos
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  72C0004

---

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

72C00023

0.0-15.0

A1

tcly

MT 4

KK 1

72C00026

66.0-97.0

B2

tcly

MT 5

MI 1

KK 1

72C00027

97.0-142.0

C1

tcly

MT 4

VR 1

MI 1

72C00029

188.0-249.0

C3

tcly

MT 4

MI 1

KK 1

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm

MINERAL INTERPRETATION:
KK Kaolinite	MI Mica	MT Montmorillonite	VR Vermiculite

RELATIVE PEAK SIZE:

5 Very Large

4 Large

3 Medium

2 Small

1 Very Small

6 No Peaks