*** Primary Characterization Data ***

Pedon ID: S1972CA013001

( Contra Costa, California )

Print Date: Apr 28 2024 9:51AM

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	S1972CA013001	National Soil Survey Center
	-	Pedon No.	72C0003	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
72C00015	A1	A11	0-13	7215				SICL
72C00016	A2	A12	13-26	7216				SICL
72C00017	A3	A13	26-56	7217				SICL
72C00018	Bt	B2t	56-86	7218				SICL
72C00019	C1	C 1	86-116	7219				SICL
72C00020	C2	C 2	116-142	7220				SIL
72C00021	C3	C 3	142-195	7221				L
72C00022	C4	C 4	195-236	7222				SIL

---

Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	1.03	(NA)
Clay, carbonate free, Weighted Average	34	% wt
Volume, >2mm, Weighted Average	0	% vol
Clay, total, Weighted Average	34	% wt
LE, Whole Soil, Summed to 1m	6	cm/m
Weighted averages based on control section: 56-86 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
72C00015	0-13	A1	GP	sicl	34.2	48.7	17.1			33.0	15.7	8.5	6.0	1.4	1.0	0.2
72C00016	13-26	A2	GP	sicl	36.3	48.3	15.4			33.2	15.1	8.4	5.2	1.0	0.7	0.1
72C00017	26-56	A3	GP	sicl	35.9	48.2	15.9			31.8	16.4	8.8	5.2	1.0	0.6	0.3
72C00018	56-86	Bt	GP	sicl	34.0	53.0	13.0			37.9	15.1	6.6	4.1	0.8	0.8	0.7
72C00019	86-116	C1	GP	sicl	31.5	55.7	12.8			45.0	10.7	4.2	4.1	1.3	1.6	1.6
72C00020	116-142	C2	GP	sil	24.3	59.0	16.7			41.9	17.1	9.1	5.1	1.1	0.9	0.5
72C00021	142-195	C3	GP	l	14.6	42.6	42.8			26.1	16.5	16.0	22.6	2.7	1.1	0.4
72C00022	195-236	C4	GP	sil	21.2	65.2	13.6			46.8	18.4	8.9	2.5	0.5	0.9	0.8

*** Primary Characterization Data ***

Pedon ID: S1972CA013001

( Contra Costa, California )

Print Date: Apr 28 2024 9:51AM

Sampled As	:	Los Osos
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  72C0003

---

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
72C00015	0-13	A1	S	1.51	1.71	0.042		24.5	22.8							0.97
72C00015	0-13	A1	GP									1.046
72C00016	13-26	A2	S	1.24	1.48	0.061		21.8	20.5							0.95
72C00016	13-26	A2	GP									1.046
72C00017	26-56	A3	S	1.39	1.65	0.059		26.6	23.7							0.99
72C00017	26-56	A3	GP									1.046
72C00018	56-86	Bt	S	1.41	1.70	0.064		27.8	24.6							1.03
72C00018	56-86	Bt	GP									1.046
72C00019	86-116	C1	S	1.68	1.92	0.046		20.3	18.8							1.15
72C00019	86-116	C1	GP									1.046
72C00020	116-142	C2	S	1.66	1.93	0.052		20.7	19.0					0.10		1.47	0.54
72C00020	116-142	C2	GP							13.2		1.040
72C00021	142-195	C3	S	2.07	2.21	0.022		10.9	10.5					0.02		1.79	0.66
72C00021	142-195	C3	GP							9.6		1.040
72C00022	195-236	C4	S	1.91	2.09	0.030		15.1	14.7					0.02		1.63	0.65
72C00022	195-236	C4	GP							13.7		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
72C00015	0-13	A1	GP	35.56799	10
72C00017	26-56	A3	GP	45.58598	26
72C00018	56-86	Bt	GP	45.31	25
72C00019	86-116	C1	GP	41.62399	16
72C00022	195-236	C4	GP	39.31999	14

*** Primary Characterization Data ***

Pedon ID: S1972CA013001

( Contra Costa, California )

Print Date: Apr 28 2024 9:51AM

Sampled As	:	Los Osos
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  72C0003

---

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
72C00015	0-13	A1	GP		0.127			1.35	11
72C00016	13-26	A2	GP		0.097			1.01	10
72C00017	26-56	A3	GP		0.065			0.66	10
72C00018	56-86	Bt	GP		0.045			0.40	9
72C00019	86-116	C1	GP					0.19
72C00020	116-142	C2	GP					0.12
72C00021	142-195	C3	GP					0.08
72C00022	195-236	C4	GP					0.09

---

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
72C00015	0-13	A1	GP	18.5	10.0	0.5	0.4	29.4	7.8			37.2	33.3			79	88
72C00016	13-26	A2	GP	21.4	10.9	0.5	0.4	33.2	6.6			39.8	34.6			83	96
72C00017	26-56	A3	GP	19.6	10.0	0.5	0.3	30.4	5.2			35.6	35.4			85	86
72C00018	56-86	Bt	GP	20.5	10.8	0.6	0.3	32.2	4.8			37.0	34.9			87	92
72C00019	86-116	C1	GP	20.5	11.9	0.6	0.3	33.3	4.2			37.5	36.2			89	92
72C00020	116-142	C2	GP	18.3	12.5	0.6	0.3	31.7	3.6			35.3	35.8			90	89
72C00021	142-195	C3	GP	14.4	8.9	0.6	0.2	24.1	2.3			26.4	26.1			91	92
72C00022	195-236	C4	GP	18.7	10.6	0.8	0.3	30.4	2.9			33.3	34.5			91	88

*** Primary Characterization Data ***

Pedon ID: S1972CA013001

( Contra Costa, California )

Print Date: Apr 28 2024 9:51AM

Sampled As	:	Los Osos
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  72C0003

---

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 - -)

%

72C00015

0-13

A1

GP

2

72C00016

13-26

A2

GP

1

72C00017

26-56

A3

GP

1

72C00018

56-86

Bt

GP

2

72C00019

86-116

C1

GP

2

72C00020

116-142

C2

GP

2

72C00021

142-195

C3

GP

2

72C00022

195-236

C4

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

72C00020

116-142

C2

GP

6.3

6.3

72C00021

142-195

C3

GP

6.7

7.3

72C00022

195-236

C4

GP

6.7

6.8

*** Primary Characterization Data ***

Pedon ID: S1972CA013001

( Contra Costa, California )

Print Date: Apr 28 2024 9:51AM

Sampled As	:	Los Osos
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  72C0003

---

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

&nbsp;

&nbsp;

&nbsp;

&nbsp;

tion

Layer

(cm)

Horz

ion

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

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

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

mg g-1

72C00015

0.0-13.0

A1

tcly

MT 5

MI 1

KK 1

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

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&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

72C00017

26.0-56.0

A3

tcly

MT 4

KK 1

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

72C00018

56.0-86.0

Bt

tcly

MT 5

MI 1

KK 1

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

72C00019

86.0-116.0

C1

tcly

MT 3

MI 1

KK 1

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

72C00022

195.0-236.0

C4

tcly

MT 4

VR 1

MI 1

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

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&nbsp;

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm	&nbsp;	&nbsp;	&nbsp;	&nbsp;

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