*** Primary Characterization Data ***

Pedon ID: S1973CA079008

( San Luis Obispo, California )

Print Date: Nov 21 2024 2:02PM

Sampled as on May 30, 1973:	Watsonville
Revised to correlated:	WATSONVILLE ; Fine, smectitic Xeric Argialbolls

				United States Department of Agriculture
SSL	-	Project	NL73CA005   SANTA MARIA	Natural Resources Conservation Service
	-	Site ID	S1973CA079008   Lat: 35° 18' 8.00" north  Long: 120° 47' 44.00" west  MLRA: 14	National Soil Survey Center
	-	Pedon No.	73C0036	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
73C00238	Ap	Ap	0-13	73238			L	FSL
73C00239	A	A12	13-36	73239			L	L
73C00240	E	A2	36-48	73240			SL	FSL
73C00241	Bt1	B21t	48-84	73241			C	C
73C00242	Bt2	B22t	84-119	73242			C	CL
73C00243	C	C1	119-147	73243			SCL	SCL
73C00244	2C	2 C2	147-160	73244			SL	SCL

---

Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	0.87	(NA)
Clay, carbonate free, Weighted Average	47	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	19	% wt
Volume, >2mm, Weighted Average	0	% vol
Clay, total, Weighted Average	47	% wt
LE, Whole Soil, Summed to 1m	0	cm/m
Weighted averages based on control section: 48-98 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
73C00238	0-13	Ap	S	fsl	15.8	21.9	62.3			17.0	4.9	13.7	25.8	7.4	13.4	2.0	1	1	--	50	2
73C00239	13-36	A	S	l	16.3	32.9	50.8			17.3	15.6	13.8	25.0	7.3	3.2	1.5	2	tr	--	38	2
73C00240	36-48	E	S	fsl	14.3	32.4	53.3			17.1	15.3	14.1	26.5	7.4	3.6	1.7	--	tr	--	40	tr
73C00241	48-84	Bt1	S	c	50.0	23.0	27.0			12.5	10.5	7.6	13.1	4.0	1.6	0.7	--	--	--	19	--
73C00242	84-119	Bt2	S	cl	39.7	30.5	29.8			17.6	12.9	10.1	14.4	3.6	1.4	0.3	--	--	--	20	--
73C00243	119-147	C	S	scl	27.5	27.2	45.3			13.6	13.6	11.8	22.8	8.0	2.5	0.2	--	--	--	34	--
73C00244	147-160	2C	S	scl	24.9	25.0	50.1			11.9	13.1	18.4	28.3	2.9	0.5	--	--	--	--	32	--

*** Primary Characterization Data ***

Pedon ID: S1973CA079008

( San Luis Obispo, California )

Print Date: Nov 21 2024 2:02PM

Sampled As	:	Watsonville
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  73C0036

---

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
73C00238	0-13	Ap	S	1.45	1.52	0.016		21.0	18.3	5.7		1.016		0.18		1.01	0.36
73C00239	13-36	A	S	1.52	1.59	0.015		21.5	16.7	5.9		1.016		0.16		0.93	0.36
73C00240	36-48	E	S	1.48	1.55	0.015		21.1	16.9	4.9		1.015		0.18		0.85	0.34
73C00241	48-84	Bt1	S	1.32	1.95	0.139		37.6	34.0	15.5		1.015		0.24		0.83	0.31
73C00242	84-119	Bt2	S	1.46	2.02	0.114		33.0	28.9	12.4		1.015		0.24		0.96	0.31
73C00243	119-147	C	S	1.56	1.97	0.081		28.9	25.3	9.9		1.015		0.24		1.00	0.36
73C00244	147-160	2C	S							9.7		1.015				0.97	0.39

---

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
73C00238	0-13	Ap	S		0.132			1.47	11
73C00239	13-36	A	S		0.099			0.90	9
73C00240	36-48	E	S		0.052			0.40	8
73C00241	48-84	Bt1	S		0.056			0.44	8
73C00242	84-119	Bt2	S		0.024			0.21	9
73C00243	119-147	C	S		0.014			0.05	4

*** Primary Characterization Data ***

Pedon ID: S1973CA079008

( San Luis Obispo, California )

Print Date: Nov 21 2024 2:02PM

Sampled As	:	Watsonville
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  73C0036

---

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	6G9b		5A3a	5A8b	5A3b	5G1	5C3	5C1
73C00238	0-13	Ap	S	7.4	5.1	0.7	0.3	13.5	6.2	0.2		19.7	16.0	13.7	1	69	84
73C00239	13-36	A	S	6.8	5.0	0.6	0.2	12.6	6.6	0.1		19.2	15.2	12.7	1	66	83
73C00240	36-48	E	S	5.2	5.0	0.8	0.1	11.1	4.1			15.2	12.1			73	92
73C00241	48-84	Bt1	S	11.8	24.2	4.6	0.4	41.0				41.0	41.6			100	99
73C00242	84-119	Bt2	S	9.9*	22.3	7.1	0.3	39.6				39.6	38.2			100	100
73C00243	119-147	C	S	8.1*	16.8	6.7	0.3	31.9				31.9	27.5			100	100
73C00244	147-160	2C	S	7.0*	15.0	6.2	0.3	28.5				28.5	24.2			100	100

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

---

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							8A	8D5	8A3a			5E
73C00238	0-13	Ap	S																			4
73C00239	13-36	A	S																			4
73C00240	36-48	E	S																			7
73C00241	48-84	Bt1	S	0.5	1.3	8.7	0.1		1.1		6.0							46.6	tr	1.05		10	9
73C00242	84-119	Bt2	S	1.4	3.4	31.4	0.2		1.4		21.5							35.8	0.1	2.68		16	20
73C00243	119-147	C	S	1.8	5.1	21.7	0.2		1.7		32.7							28.1	0.1	3.94		22	12
73C00244	147-160	2C	S	2.2	8.2	33.8	tr		1.2		43.9							28.3	0.1	4.96		22	15

*** Primary Characterization Data ***

Pedon ID: S1973CA079008

( San Luis Obispo, California )

Print Date: Nov 21 2024 2:02PM

Sampled As	:	Watsonville
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  73C0036

---

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
73C00238	0-13	Ap	S		4.7	5.5
73C00239	13-36	A	S		4.6	5.4
73C00240	36-48	E	S		4.8	6.0
73C00241	48-84	Bt1	S		6.1	6.9	6.5
73C00242	84-119	Bt2	S		6.9	7.7	7.3
73C00243	119-147	C	S		6.9	7.9	7.3
73C00244	147-160	2C	S		6.8	7.8	7.3

---

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

73C00241

48-84

Bt1

S

6.9

73C00242

84-119

Bt2

S

7.8

73C00243

119-147

C

S

8.2

73C00244

147-160

2C

S

8.0

*** Primary Characterization Data ***

Pedon ID: S1973CA079008

( San Luis Obispo, California )

Print Date: Nov 21 2024 2:02PM

Sampled As	:	Watsonville
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  73C0036

---

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

73C00239

13.0-36.0

A

tcly

MT 3

MI 3

MM 3

73C00242

84.0-119.0

Bt2

tcly

MT 5

MI 2

KK 1

73C00244

147.0-160.0

2C

tcly

MT 4

MI 2

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm

MINERAL INTERPRETATION:
KK Kaolinite	MI Mica	MM Montmorillonite-Mica	MT Montmorillonite

RELATIVE PEAK SIZE:

5 Very Large

4 Large

3 Medium

2 Small

1 Very Small

6 No Peaks