*** Primary Characterization Data ***

Pedon ID: 77CA061002

( Placer, California )

Print Date: Feb 16 2025 10:49AM

Sampled as on Aug 1, 1977:	Horseshoe ; Loamy-skeletal, mixed, mesic Xeric Haplohumult
Revised to correlated:	Huysink ; Loamy-skeletal, mixed, mesic Xeric Haplohumults

				United States Department of Agriculture
SSL	-	Project	CP78CA020   TAHOE NATIONAL FOREST	Natural Resources Conservation Service
	-	Site ID	S1977CA061002   Lat: 39° 16' 59.60" north  Long: 120° 40' 33.69" west  MLRA: 22A	National Soil Survey Center
	-	Pedon No.	78P0071	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
78P00373	A1	A11	0-5				VFSL	L
78P00374	A2	A12	5-18				VFSL	L
78P00375	B	B1	18-35				L	L
78P00376	Bt1	B21t	35-73				L	L
78P00377	Bt2	B22t	73-103				L	L
78P00378	C1	C1	103-147				L	L
78P00379	C2	C2	147-175				SL	L

---

---

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
78P00373	0-5	A1	S	l	17.0	33.4	49.6			22.1	11.3	10.9	11.4	5.1	7.7	14.5	5	26	19	69	75
78P00374	5-18	A2	S	l	13.3	40.3	46.4			26.5	13.8	12.0	11.8	5.5	7.9	9.2	5	17	25	65	75
78P00375	18-35	B	S	l	14.0	36.1	49.9			23.8	12.3	11.1	12.1	6.1	9.0	11.6	3	6	67	86	87
78P00376	35-73	Bt1	S	l	19.1	37.3	43.6			22.5	14.8	10.6	10.9	5.4	7.6	9.1	4	10	51	77	81
78P00377	73-103	Bt2	S	l	19.2	34.9	45.9			21.7	13.2	11.5	10.4	5.2	8.0	10.8	5	12	38	70	74
78P00378	103-147	C1	S	l	23.6	38.2	38.2			24.9	13.3	9.5	10.0	4.7	6.5	7.5	6	12	28	62	70
78P00379	147-175	C2	S	l	19.1	37.3	43.6			24.1	13.2	10.1	10.3	5.6	8.6	9.0	5	14	25	63	70

*** Primary Characterization Data ***

Pedon ID: 77CA061002

( Placer, California )

Print Date: Feb 16 2025 10:49AM

Sampled As	:	Horseshoe		Loamy-skeletal, mixed, mesic Xeric Haplohumult
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  78P0071

---

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				4C1		8D1	8D1
78P00373	0-5	A1	S	0.69	0.74	0.013			37.2	25.1				0.05		2.57	1.48
78P00374	5-18	A2	S							15.5						1.89	1.17
78P00375	18-35	B	S							13.1						1.08	0.94
78P00376	35-73	Bt1	S	1.09	1.09	--			25.2	12.2				0.05		0.55	0.64
78P00377	73-103	Bt2	S							11.3						0.46	0.59
78P00378	103-147	C1	S							11.0						0.36	0.47
78P00379	147-175	C2	S	0.97	1.00	0.005			52.2	10.1				0.22		0.49	0.53

---

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		6C2b	6G7a									6C5a	6G5a
78P00373	0-5	A1	S		0.659			7.27	11	2.4	1.2									0.2	0.9
78P00374	5-18	A2	S		0.332			5.26	16	3.1	1.4									0.2	1.1
78P00375	18-35	B	S		0.168			2.71	16	3.0	1.1									0.1	0.7
78P00376	35-73	Bt1	S					0.98		3.5	0.8									0.1	0.4
78P00377	73-103	Bt2	S					0.82		3.3	0.6									0.1	0.2
78P00378	103-147	C1	S					0.66		3.3	0.6
78P00379	147-175	C2	S					0.45		2.4	0.5

*** Primary Characterization Data ***

Pedon ID: 77CA061002

( Placer, California )

Print Date: Feb 16 2025 10:49AM

Sampled As	:	Horseshoe		Loamy-skeletal, mixed, mesic Xeric Haplohumult
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  78P0071

---

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	6G1e		5A3a	5A8a	5A3b	5G1	5C3	5C1
78P00373	0-5	A1	S	19.8	1.9	tr	0.7	22.4	35.8			58.2	43.7			38	51
78P00374	5-18	A2	S	5.1	0.4	tr	0.4	5.9	29.5			35.4	25.1			17	24
78P00375	18-35	B	S	1.0	0.1	0.1	0.2	1.4	22.4			23.8	15.1			6	9
78P00376	35-73	Bt1	S	0.6	0.2	0.1	0.2	1.1	15.2	0.2		16.3	10.6	1.3	15	7	10
78P00377	73-103	Bt2	S	0.2	0.2	--	0.1	0.5	12.3	0.5		12.8	8.9	1.0	50	4	6
78P00378	103-147	C1	S	0.2	0.2	0.1	0.1	0.6	11.2	1.0		11.8	8.5	1.6	63	5	7
78P00379	147-175	C2	S	0.2	0.2	0.1	0.1	0.6	11.8	1.2		12.4	9.3	1.8	67	5	6

---

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 - -)

%

78P00373

0-5

A1

S

--

78P00374

5-18

A2

S

--

78P00375

18-35

B

S

1

78P00376

35-73

Bt1

S

1

78P00377

73-103

Bt2

S

--

78P00378

103-147

C1

S

1

78P00379

147-175

C2

S

1

*** Primary Characterization Data ***

Pedon ID: 77CA061002

( Placer, California )

Print Date: Feb 16 2025 10:49AM

Sampled As	:	Horseshoe		Loamy-skeletal, mixed, mesic Xeric Haplohumult
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  78P0071

---

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
78P00373	0-5	A1	S						10.5
78P00374	5-18	A2	S		5.3	5.9			11.2
78P00375	18-35	B	S		5.3	5.8			11.0
78P00376	35-73	Bt1	S		5.0	5.4			10.3
78P00377	73-103	Bt2	S		4.7	5.3			9.9
78P00378	103-147	C1	S		4.4	5.1			9.7
78P00379	147-175	C2	S		4.5	5.2			9.8

---

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

NK

78P00373

0-5

A1

S

5.4

6.2

*** Primary Characterization Data ***

Pedon ID: 77CA061002

( Placer, California )

Print Date: Feb 16 2025 10:49AM

Sampled As	:	Horseshoe		Loamy-skeletal, mixed, mesic Xeric Haplohumult
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  78P0071

---

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				7C3								tion
Layer	(cm)	Horz	ion	( - - - - - - - - - peak size - - - - - - - - - - )					(- - - - - - - - - % - - - - - - - - - -)				(- - - - - - - - - - - - - - - - - - - - - % - - - - - - - - - - - - - - - - - - - - -)							mg g-1
78P00373	0.0-5.0	A1	tcly	NX 6											4.0			--
78P00376	35.0-73.0	Bt1	tcly	GI 2	VR 1	CR 1									8.0			--
78P00379	147.0-175.0	C2	tcly	GI 2	CR 1				KK 16						8.4			--

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm

MINERAL INTERPRETATION:
CR Cristobalite	GI Gibbsite	KK Kaolinite	NX Non-Crystalline	VR Vermiculite

RELATIVE PEAK SIZE:

5 Very Large

4 Large

3 Medium

2 Small

1 Very Small

6 No Peaks