*** Primary Characterization Data ***

Pedon ID: S68CA017027

( El Dorado, California )

Print Date: Mar 2 2025 9:00AM

Sampled as on Aug 7, 1968:	Celio
Revised to correlated:	Christopher ; Mixed, frigid Dystric Xeropsamments

				United States Department of Agriculture
SSL	-	Project	NL68CA017   TAHOE BASIN	Natural Resources Conservation Service
	-	Site ID	68CA693-003   Lat: 38° 52' 16.65" north  Long: 120° 0' 1.57" west  MLRA: 22	National Soil Survey Center
	-	Pedon No.	68C0070	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
68C00553	O	O1	3-0	68553
68C00554	A1	A11	0-5	68554			LCOS	LCOS
68C00555	A2	A12	5-15	68555			LCOS	LCOS
68C00556	A3	A13	15-20	68556			LCOS	LCOS
68C00557	C1	C 1	20-33	68557			LCOS	COSL
68C00558	C2	C 2	33-51	68558			LCOS	LCOS
68C00559	C3	C 3	51-89	68559			COS	LCOS
68C00560	C4	C 4	89-140	68560			COS	COS
68C00561	2C	2 C 5	140-185	68561			COS	COS
68C00562	3C	3 C 6	185-200	68562			COS	COS
68C00563	A	A	0-20	68563
68C00564	2C	2 C 5	0-0	68564

---

Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	0.85	(NA)
Clay, carbonate free, Weighted Average	8	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	80	% wt
Volume, >2mm, Weighted Average	29	% vol
Clay, total, Weighted Average	8	% wt
Weighted averages based on control section: 25-100 cm

*** Primary Characterization Data ***

Pedon ID: S68CA017027

( El Dorado, California )

Print Date: Mar 2 2025 9:00AM

Sampled As	:	Celio
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  68C0070

---

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
68C00553	3-0	O	S														--	--	--
68C00554	0-5	A1	S	lcos	4.2	9.3	86.5			5.2	4.1	4.0	11.9	11.2	30.8	28.6	2	2	--	83	4
68C00555	5-15	A2	S	lcos	5.7	13.5	80.8			6.6	6.9	9.0	19.2	13.7	24.2	14.7	11	7	5	73	23
68C00556	15-20	A3	S	lcos	7.0	13.7	79.3			7.4	6.3	6.4	14.7	12.2	26.0	20.0	--	22	--	79	22
68C00557	20-33	C1	S	cosl	8.3	14.4	77.3			7.9	6.5	5.5	16.5	13.8	26.7	14.8	14	8	--	72	22
68C00558	33-51	C2	S	lcos	8.2	13.1	78.7			7.5	5.6	6.4	14.5	12.4	26.3	19.1	14	9	6	74	29
68C00559	51-89	C3	S	lcos	8.5	12.7	78.8			7.3	5.4	5.8	14.5	12.9	26.3	19.3	14	8	32	82	54
68C00560	89-140	C4	S	cos	4.5	5.6	89.9			3.3	2.3	2.5	10.2	13.4	45.5	18.3	18	12	17	90	47
68C00561	140-185	2C	S	cos	3.5	7.4	89.1			4.2	3.2	5.2	17.1	17.5	30.9	18.4	9	6	13	86	28
68C00562	185-200	3C	S	cos	2.6	5.7	91.7		--	2.9	2.8	4.1	12.6	11.3	36.5	27.2	22	14	7	88	47
68C00563	0-20	A	S														17	10	--
68C00564	0-0	2C	S														--	--	--

---

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	%
				4A1f	4A1h				4B1c	3C2a1a		3D1		4C1		8D1	8D1
68C00554	0-5	A1	S	0.45	0.60	0.100			60.7	8.2				0.23		3.71	1.95
68C00555	5-15	A2	S	1.47	1.47	--			11.5	3.9				0.10		1.47	0.68
68C00556	15-20	A3	S	1.40	1.40	--			10.0	4.7				0.06		1.23	0.67
68C00557	20-33	C1	S	1.45	1.45	--			10.9	4.7				0.08		0.73	0.57
68C00558	33-51	C2	S	1.35	1.36	0.002			11.0	4.6				0.07		0.82	0.56
68C00559	51-89	C3	S	1.35	1.35	--			12.1	5.0				0.06		0.81	0.59
68C00560	89-140	C4	S	1.45	1.47	0.003			10.5	3.3		1.015		0.07		1.11	0.73
68C00561	140-185	2C	S							3.0		1.015				1.11	0.86
68C00562	185-200	3C	S							2.4		1.015				1.50	0.92
68C00563	0-20	A	S							5.2		1.015
68C00564	0-0	2C	S									1.015

*** Primary Characterization Data ***

Pedon ID: S68CA017027

( El Dorado, California )

Print Date: Mar 2 2025 9:00AM

Sampled As	:	Celio
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  68C0070

---

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

68C00554

0-5

A1

S

NP

NP

68C00556

15-20

A3

S

NP

NP

68C00560

89-140

C4

S

NP

NP

---

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 - - - - -)
					6B1a			6A1a			6G7a			8J	6C9a	6G12	6V2	6D5b
68C00554	0-5	A1	S		0.190			5.85	31		tr		0.32	0.11	0.22	0.22	0.03	100.0
68C00555	5-15	A2	S		0.063			1.42	23
68C00556	15-20	A3	S		0.052			1.25	24
68C00557	20-33	C1	S					0.48					0.48	0.08	0.20	0.38	0.07	130.0
68C00558	33-51	C2	S					0.47
68C00559	51-89	C3	S					0.27					0.32	0.06	0.11	0.27	0.05	71.0
68C00560	89-140	C4	S					0.12
68C00561	140-185	2C	S					0.07
68C00563	0-20	A	S					2.49

*** Primary Characterization Data ***

Pedon ID: S68CA017027

( El Dorado, California )

Print Date: Mar 2 2025 9:00AM

Sampled As	:	Celio
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  68C0070

---

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 - - -)			(- - - - - - - - % - - - - - - - -)
				6N2b	6O2b	6P2a	6Q2a		6H2a	6G1b		5A3a	5A6a	5A3b	5G1	5C3	5C1
68C00554	0-5	A1	S	4.5	0.8	0.1	0.3	5.7	8.8	0.5		14.5	15.6	6.2	8	39	37
68C00555	5-15	A2	S	2.1	0.3	tr	0.3	2.7	6.3			9.0	8.4			30	32
68C00556	15-20	A3	S	1.9	0.2	tr	0.3	2.4	7.7			10.1	8.6			24	28
68C00557	20-33	C1	S	1.4	0.1	0.1	0.2	1.8	5.3			7.1	6.1			25	30
68C00558	33-51	C2	S	1.6	0.1	0.1	0.2	2.0	5.1			7.1	6.7			28	30
68C00559	51-89	C3	S	2.3	0.2	0.1	0.2	2.8	4.5			7.3	6.9			38	41
68C00560	89-140	C4	S	1.6	0.2	0.1	0.3	2.2	2.6			4.8	5.0			46	44
68C00561	140-185	2C	S	1.4	0.2	0.1	0.3	2.0	1.0			3.0	3.9			67	51
68C00562	185-200	3C	S	1.1	0.1	0.1	0.2	1.5	1.0			2.5	3.9			60	38

---

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 - -)

%

68C00554

0-5

A1

S

1

68C00555

5-15

A2

S

--

68C00556

15-20

A3

S

--

68C00557

20-33

C1

S

2

68C00558

33-51

C2

S

1

68C00559

51-89

C3

S

1

68C00560

89-140

C4

S

2

68C00561

140-185

2C

S

3

68C00562

185-200

3C

S

3

*** Primary Characterization Data ***

Pedon ID: S68CA017027

( El Dorado, California )

Print Date: Mar 2 2025 9:00AM

Sampled As	:	Celio
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  68C0070

---

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			4C1a1a1
68C00554	0-5	A1	S		4.4	5.0			7.7
68C00555	5-15	A2	S		4.9	5.8
68C00556	15-20	A3	S		5.0	5.8
68C00557	20-33	C1	S		4.9	5.8			9.8
68C00559	51-89	C3	S		5.1	5.8			9.6
68C00560	89-140	C4	S		5.3	6.2
68C00561	140-185	2C	S		5.3	6.0
68C00562	185-200	3C	S		5.1	5.9
68C00563	0-20	A	S		5.2	6.0

---

Phosphorus

-1-

-2-

-3-

-4-

-5-

-6-

-7-

-8-

-9-

-10-

-11-

-12-

(- - - - - - - - - - - - - - - - - - - - - - - Phosphorus - - - - - - - - - - - - - - - - - - - - -)

KCl

Melanic

NZ

Acid

Anion Exch Resin

Bray

Bray

Olsen

H2O

Citric

Mehlich

Extr

Depth

Index

Oxal

Available

Capacity

1

2

Acid

III

NO3

Layer

(cm)

Horz

Prep

%

(- - - - - - - - - - - - - - - - - - - - - - - - - - - mg kg-1 - - - - - - - - - - - - - - - - - - - -)

6S8a

68C00554

0-5

A1

S

209.0

68C00557

20-33

C1

S

140.0

68C00559

51-89

C3

S

91.0

*** Primary Characterization Data ***

Pedon ID: S68CA017027

( El Dorado, California )

Print Date: Mar 2 2025 9:00AM

Sampled As	:	Celio
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  68C0070

---

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

7A2e

tion

Layer

(cm)

Horz

ion

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

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

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

mg g-1

68C00554

0.0-5.0

A1

tcly

VR 3

KK 2

68C00556

15.0-20.0

A3

tcly

VR 3

KK 2

68C00560

89.0-140.0

C4

tcly

MI 2

KK 2

VM 2

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm

MINERAL INTERPRETATION:
KK Kaolinite	MI Mica	VM Vermiculite-Mica	VR Vermiculite

RELATIVE PEAK SIZE:

5 Very Large

4 Large

3 Medium

2 Small

1 Very Small

6 No Peaks

*** Primary Characterization Data ***

Pedon ID: S68CA017027

( El Dorado, California )

Print Date: Mar 2 2025 9:00AM

Sampled As	:	Celio
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  68C0070

---

Sand - Silt Mineralogy (2.0-0.002 mm)

-1-

-2-

-3-

-4-

-5-

-6-

-7-

-8-

-9-

-10-

-11-

-12-

-13-

-14-

-15-

-16-

-17-

-18-

X-Ray

Thermal

Optical

EGME

Inter

Tot Re

Grain Count

Retn

preta

Depth

Fract

7B1a2

tion

Layer

(cm)

Horz

ion

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

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

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

mg g-1

68C00554

0.0-5.0

A1

vfs

OT 98

GS 2

68C00554

0.0-5.0

A1

fs

OT 99

68C00557

20.0-33.0

C1

vfs

OT 97

GS 3

68C00557

20.0-33.0

C1

fs

OT 99

68C00559

51.0-89.0

C3

vfs

OT 97

GS 3

68C00559

51.0-89.0

C3

fs

OT 99

FRACTION INTERPRETATION:
vfs - Very Fine Sand 0.05-0.1 mm	fs - Fine Sand 0.1-0.25 mm

MINERAL INTERPRETATION:
GS Glass	OT Other