*** Primary Characterization Data ***

Pedon ID: S1972CA013005

( Contra Costa, California )

Print Date: Nov 23 2024 10:16PM

Sampled as on Apr 11, 1972:	Los Osos
Revised to correlated:	unnamed ; Fine-loamy, mixed, thermic Typic Argixerolls

				United States Department of Agriculture
SSL	-	Project	NL71CA001   CONTRA COSTA ARE	Natural Resources Conservation Service
	-	Site ID	S1972CA013005	National Soil Survey Center
	-	Pedon No.	72C0006	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
72C00039	A1	A11	0-13	7239			CL	L
72C00040	A2	A12	13-33	7240			CL	L
72C00041	A3	A13	33-51	7241			CL	L
72C00042	B	B2	51-74	7242			CL	L
72C00043	C1	C 1	74-137	7243				VFSL
72C00044	C2	C 2	137-165	7244				LFS

---

Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	1.26	(NA)
Clay, carbonate free, Weighted Average	23	% wt
Volume, >2mm, Weighted Average	0	% vol
Clay, total, Weighted Average	23	% wt
LE, Whole Soil, Summed to 1m	4	cm/m
Weighted averages based on control section: 51-74 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	3A1a1a	3B1	3B1	3B1
72C00039	0-13	A1	GP	l	25.8	34.4	39.8	12.9		17.3	17.1	16.7	16.2	4.9	1.7	0.3
72C00040	13-33	A2	GP	l	26.4	33.5	40.1			19.0	14.5	16.7	15.7	6.0	1.5	0.2
72C00041	33-51	A3	S	l	25.8	33.1	41.1			18.6	14.5	16.0	16.0	7.2	1.7	0.2	2	1	tr	28	3
72C00042	51-74	B	GP	l	23.0	34.7	42.3	11.4		19.4	15.3	16.9	15.8	7.5	1.9	0.2
72C00043	74-137	C1	GP	vfsl	7.2	40.7	52.1	2.1		19.2	21.5	30.6	15.9	4.6	1.0	--
72C00044	137-165	C2	GP	lfs	5.5	17.3	77.2			9.8	7.5	19.9	44.0	11.3	1.9	0.1

*** Primary Characterization Data ***

Pedon ID: S1972CA013005

( Contra Costa, California )

Print Date: Nov 23 2024 10:16PM

Sampled As	:	Los Osos
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  72C0006

---

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
72C00039	0-13	A1	S	1.45	1.62	0.038		23.3	21.0					0.13		1.09	0.47
72C00039	0-13	A1	GP							12.0		1.038
72C00040	13-33	A2	S	1.32	1.53	0.050		24.1	20.8					0.12		1.09	0.44
72C00040	13-33	A2	GP							11.6		1.033
72C00041	33-51	A3	S	1.32	1.52	0.047		24.2	20.7	11.4		1.033		0.12		1.12	0.44
72C00042	51-74	B	S	1.42	1.64	0.049		25.9	22.2					0.16		1.26	0.48
72C00042	51-74	B	GP							11.1		1.033
72C00043	74-137	C1	S	1.81	1.96	0.027		17.3	15.3					0.11		3.68	1.29
72C00043	74-137	C1	GP							9.3		1.033
72C00044	137-165	C2	S	1.87	2.02	0.026		16.8	13.1					0.13		3.51	1.11
72C00044	137-165	C2	GP							6.1		1.033

---

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
72C00039	0-13	A1	GP	33.31999	11
72C00041	33-51	A3	S	30.411	11
72C00042	51-74	B	GP	32.30699	15
72C00043	74-137	C1	GP	29.69995	5
72C00044	137-165	C2	GP	NP	NP

*** Primary Characterization Data ***

Pedon ID: S1972CA013005

( Contra Costa, California )

Print Date: Nov 23 2024 10:16PM

Sampled As	:	Los Osos
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  72C0006

---

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
72C00039	0-13	A1	GP		0.162			1.88	12
72C00040	13-33	A2	GP		0.097			0.99	10
72C00041	33-51	A3	S		0.078			0.77	10
72C00042	51-74	B	GP		0.066			0.62	9
72C00043	74-137	C1	GP		0.013			0.07	5
72C00044	137-165	C2	GP					0.06

---

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
72C00039	0-13	A1	GP	13.2	8.6	0.5	0.7	23.0	7.2			30.2	28.2			76	82
72C00040	13-33	A2	GP	14.6	9.4	0.4	0.5	24.9	4.8			29.7	28.8			84	86
72C00041	33-51	A3	S	14.4	10.0	0.5	0.4	25.3	4.4				28.9
72C00042	51-74	B	GP	14.4	10.3	0.6	0.3	25.6	3.9			29.5	29.0			87	88
72C00043	74-137	C1	GP	11.6	12.2	0.4	0.3	24.5	1.1			25.6	26.5			96	92
72C00044	137-165	C2	GP	8.8	8.5	0.4	0.2	17.9	1.1			19.0	19.3			94	93

---

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 - - -)

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

5A3a

5C3

5C1

72C00041

33-51

A3

S

29.7

85

88

*** Primary Characterization Data ***

Pedon ID: S1972CA013005

( Contra Costa, California )

Print Date: Nov 23 2024 10:16PM

Sampled As	:	Los Osos
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  72C0006

---

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 - -)

%

72C00039

0-13

A1

GP

2

72C00040

13-33

A2

GP

1

72C00041

33-51

A3

S

2

72C00042

51-74

B

GP

2

72C00043

74-137

C1

GP

2

72C00044

137-165

C2

GP

2

---

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

72C00039

0-13

A1

GP

5.3

5.9

72C00040

13-33

A2

GP

5.6

6.0

72C00041

33-51

A3

S

5.6

6.2

72C00042

51-74

B

GP

5.7

6.2

72C00043

74-137

C1

GP

6.4

7.0

72C00044

137-165

C2

GP

6.3

6.9

*** Primary Characterization Data ***

Pedon ID: S1972CA013005

( Contra Costa, California )

Print Date: Nov 23 2024 10:16PM

Sampled As	:	Los Osos
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  72C0006

---

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

72C00039

0.0-13.0

A1

fcly

MT 3

72C00039

0.0-13.0

A1

tcly

MT 4

MI 1

KK 1

72C00042

51.0-74.0

B

fcly

MT 5

72C00042

51.0-74.0

B

tcly

MT 4

MI 2

72C00043

74.0-137.0

C1

fcly

MT 4

MI 1

72C00043

74.0-137.0

C1

tcly

MT 4

FRACTION INTERPRETATION:
fcly - Fine Clay <0.0002 mm	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