*** Primary Characterization Data ***

Pedon ID: S1979CA079003

( San Luis Obispo, California )

Print Date: Apr 26 2024 9:15AM

Sampled as on May 30, 1979:	Mollic Palexeral ; Fine, montmorillonitic, thermic Mollic Palexeralf
Revised to correlated:	SND ; Fine, montmorillonitic, thermic Mollic Haploxeralfs

				United States Department of Agriculture
SSL	-	Project	CP79CA263   LOS PADRES NATIONAL FOREST	Natural Resources Conservation Service
	-	Site ID	S1979CA079003   Lat: 35° 11' 5.00" north  Long: 120° 9' 59.99" west  MLRA: 15	National Soil Survey Center
	-	Pedon No.	79P0462	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
79P02467	A1	A11	0-3					SIL
79P02468	A2	A12	3-23					SIL
79P02469	Bt1	B21t	23-43					CL
79P02470	Bt2	B22t	43-71					CL
79P02471	Bt3	B23t	71-114					SICL

---

Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	0.85	(NA)
Clay, carbonate free, Weighted Average	34	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	17	% wt
Volume, >2mm, Weighted Average	7	% vol
Clay, total, Weighted Average	34	% wt
Weighted averages based on control section: 23-73 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
79P02467	0-3	A1	S	sil	19.1	62.4	18.5	4.7		36.8	25.6	13.1	1.8	1.5	0.9	1.2	2	tr	--	7	2
79P02468	3-23	A2	S	sil	24.4	59.3	16.3	5.8		37.6	21.7	12.5	1.8	1.3	0.5	0.2	1	1	--	6	2
79P02469	23-43	Bt1	S	cl	34.1	45.6	20.3	13.7		28.7	16.9	14.3	2.7	2.0	1.2	0.1	3	9	7	24	19
79P02470	43-71	Bt2	S	cl	33.3	44.7	22.0	15.4		27.5	17.2	15.4	2.2	1.9	1.9	0.6	6	--	--	12	6
79P02471	71-114	Bt3	S	sicl	33.7	49.6	16.7			30.8	18.8	11.7	1.5	1.5	1.3	0.7	5	14	--	23	19

*** Primary Characterization Data ***

Pedon ID: S1979CA079003

( San Luis Obispo, California )

Print Date: Apr 26 2024 9:15AM

Sampled As	:	Mollic Palexeral		Fine, montmorillonitic, thermic Mollic Palexeralf
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  79P0462

---

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	3C2a1a		3D1		4C1		8D1	8D1
79P02467	0-3	A1	S							8.6		1.016				0.92	0.45
79P02468	3-23	A2	S	1.68	1.76	0.015			16.6	8.6		1.018		0.13		0.75	0.35
79P02469	23-43	Bt1	S	1.48	1.77	0.054			23.8	13.4		1.029		0.14		0.80	0.39
79P02470	43-71	Bt2	S	1.36	1.65	0.064			30.7	14.3		1.030		0.22		0.88	0.43
79P02471	71-114	Bt3	S							14.4		1.028				0.87	0.43

---

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 - - - - -)

6B1b

6A1c

79P02467

0-3

A1

S

0.182

2.24

12

79P02468

3-23

A2

S

0.064

0.65

10

79P02469

23-43

Bt1

S

0.042

0.32

8

79P02470

43-71

Bt2

S

0.22

79P02471

71-114

Bt3

S

0.20

---

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		6H2b			5A3a	5A8a			5C3	5C1
79P02467	0-3	A1	S	9.4	6.6	0.1	0.7	16.8	5.1			21.9	17.5			77	96
79P02468	3-23	A2	S	9.5	7.3	0.1	0.4	17.3	3.6			20.9	18.3			83	95
79P02469	23-43	Bt1	S	13.1	12.5	0.6	0.4	26.6	4.9			31.5	27.4			84	97
79P02470	43-71	Bt2	S	13.4*	14.8	0.9	0.4	29.5	5.1			34.6	29.4			85	100
79P02471	71-114	Bt3	S	13.5*	14.5	1.2	0.3		4.1				29.3			88	100

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

*** Primary Characterization Data ***

Pedon ID: S1979CA079003

( San Luis Obispo, California )

Print Date: Apr 26 2024 9:15AM

Sampled As	:	Mollic Palexeral		Fine, montmorillonitic, thermic Mollic Palexeralf
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  79P0462

---

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	6I1b	6J1b	6U1a	6K1c				6L1c	6W1a	6M1c	8A	8D5	8A1a	4F1a1a1		5E
79P02467	0-3	A1	S	12.7	14.8	0.9	0.8	--	21.4	1.8	1.1				2.0	--	0.4	50.3	0.1	1.71	0.35	1	tr
79P02468	3-23	A2	S																		0.04	1
79P02469	23-43	Bt1	S																		0.04	2
79P02470	43-71	Bt2	S																		0.04	3
79P02471	71-114	Bt3	S																		0.06	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

8C1e

8C1a

8C1b

6E1b

79P02467

0-3

A1

S

5.8

6.0

6.2

79P02468

3-23

A2

S

5.7

6.5

79P02469

23-43

Bt1

S

5.8

6.7

79P02470

43-71

Bt2

S

5.9

6.8

79P02471

71-114

Bt3

S

6.2

7.0

--

*** Primary Characterization Data ***

Pedon ID: S1979CA079003

( San Luis Obispo, California )

Print Date: Apr 26 2024 9:15AM

Sampled As	:	Mollic Palexeral		Fine, montmorillonitic, thermic Mollic Palexeralf
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  79P0462

---

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

7A3b

&nbsp;

7C3

&nbsp;

tion

Layer

(cm)

Horz

ion

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

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

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

mg g-1

79P02468

3.0-23.0

A2

tcly

MI 2

AG 2

MT 1

VR 1

&nbsp;

KK 1

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

9.0

&nbsp;

&nbsp;

2.3

&nbsp;

&nbsp;

&nbsp;

79P02469

23.0-43.0

Bt1

tcly

MT 2

VR 2

KK 2

MI 1

&nbsp;

KK 23

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

9.9

&nbsp;

&nbsp;

2.1

&nbsp;

&nbsp;

&nbsp;

79P02470

43.0-71.0

Bt2

tcly

MT 3

VR 3

KK 3

MI 1

&nbsp;

KK 20

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

9.0

&nbsp;

&nbsp;

1.9

&nbsp;

&nbsp;

&nbsp;

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

MINERAL INTERPRETATION:
AG Antigorite	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