*** Primary Characterization Data ***

Pedon ID: 80CA093015

( Siskiyou, California )

Print Date: Feb 16 2025 5:36AM

Sampled as on Jul 30, 1980:	Modoc ; Fine-loamy, mixed, mesic Aridic Durixeroll
Revised to correlated:	Modoc ; Fine-loamy, mixed, superactive, mesic Aridic Durixerolls

				United States Department of Agriculture
SSL	-	Project	CP80CA287   BUTTE VALLEY-TULE LAKE (SSA 684)	Natural Resources Conservation Service
	-	Site ID	S1980CA093015   Lat: 41° 55' 17.43" north  Long: 121° 56' 28.98" west  MLRA: 21	National Soil Survey Center
	-	Pedon No.	80P0458	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
80P02533	A1	A11	0-8				L	SIL
80P02534	A2	A12	8-30				L	L
80P02535	B	B1	30-53				L	L
80P02536	Bt	B2t	53-86				CL	CL
80P02537	Bkq1	C1sIca	86-107					L
80P02538	Bkq2	C2sIca	107-140					L
80P02539	2C	2C3	140-152				S	FSL

---

Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	0.94	(NA)
Clay, carbonate free, Weighted Average	28	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	13	% wt
Volume, >2mm, Weighted Average	0	% vol
Clay, total, Weighted Average	28	% wt
Weighted averages based on control section: 53-86 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	3B1	3B1	3B1
80P02533	0-8	A1	S	sil	19.7	50.6	29.7			35.1	15.5	12.3	7.9	6.5	2.7	0.3	tr	--	--	17	tr
80P02534	8-30	A2	S	l	22.5	48.9	28.6			34.6	14.3	12.1	7.6	6.3	2.5	0.1	--	--	--	17	--
80P02535	30-53	B	S	l	21.5	49.6	28.9			34.8	14.8	12.3	7.5	6.3	2.6	0.2	--	--	--	17	--
80P02536	53-86	Bt	S	cl	27.9	48.8	23.3			35.3	13.5	10.0	6.3	4.8	2.1	0.1	tr	--	--	13	--
80P02537	86-107	Bkq1	S	l	13.3	45.4	41.3			29.5	15.9	9.9	4.7	5.1	10.0	11.6	tr	--	--	31	--
80P02538	107-140	Bkq2	S	l	16.2	42.2	41.6			28.2	14.0	9.2	5.0	6.2	12.0	9.2	tr	--	--	32	--
80P02539	140-152	2C	S	fsl	15.6	15.0	69.4			9.4	5.6	18.9	29.9	15.9	3.9	0.8	tr	--	tr	51	tr

*** Primary Characterization Data ***

Pedon ID: 80CA093015

( Siskiyou, California )

Print Date: Feb 16 2025 5:36AM

Sampled As	:	Modoc		Fine-loamy, mixed, mesic Aridic Durixeroll
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  80P0458

---

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
80P02533	0-8	A1	S							11.6		1.014				1.10	0.59
80P02534	8-30	A2	S	1.20	1.27	0.019			19.1	10.6		1.015		0.10		0.88	0.47
80P02535	30-53	B	S							10.5		1.014				0.85	0.49
80P02536	53-86	Bt	S	1.41	1.52	0.025			26.6	17.1		1.022		0.13		0.94	0.61
80P02537	86-107	Bkq1	S							18.0		1.028				2.24	1.35
80P02538	107-140	Bkq2	S	1.27	1.29	0.005			31.7	17.5		1.028		0.18		1.72	1.08
80P02539	140-152	2C	S							11.6		1.018				1.01	0.74

---

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						4G2	4G2	4G2	4G2	4G2
80P02533	0-8	A1	S		0.202			3.16	16				0.16	0.09	0.09	0.12	0.05	245.9
80P02534	8-30	A2	S		0.108			1.25	12				0.16	0.05	0.07	0.12	0.05	213.6
80P02535	30-53	B	S		0.075			0.77	10				0.14	0.05	0.06	0.11	0.06	204.4
80P02536	53-86	Bt	S					0.37					0.20	0.04	0.07	0.17	0.07	167.6
80P02537	86-107	Bkq1	S					0.22
80P02538	107-140	Bkq2	S					0.12
80P02539	140-152	2C	S					0.16

*** Primary Characterization Data ***

Pedon ID: 80CA093015

( Siskiyou, California )

Print Date: Feb 16 2025 5:36AM

Sampled As	:	Modoc		Fine-loamy, mixed, mesic Aridic Durixeroll
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  80P0458

---

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				5A8a			5C3	5C1
80P02533	0-8	A1	S	12.9*	4.9	0.1	4.4		4.0				21.6			85	100
80P02534	8-30	A2	S	11.4*	5.2	0.2	3.3		1.9				19.7			91	100
80P02535	30-53	B	S	10.1*	5.8	0.3	2.9		1.3				18.3			94	100
80P02536	53-86	Bt	S	12.1*	9.8	1.0	3.7		0.9				26.2			97	100
80P02537	86-107	Bkq1	S	39.7*	13.1	2.3	3.9						29.8			100	100
80P02538	107-140	Bkq2	S	34.3*	12.3	1.7	3.2						27.8			100	100
80P02539	140-152	2C	S	7.5*	7.4	1.1	1.6		0.7				15.8			96	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	6I1b	6J1b	6U1a	6K1c				6L1c	6W1a	6M1c	8A	8D5	8A1a	4F1a1a1		5E
80P02533	0-8	A1	S	6.2	4.0	0.6	5.3	--	10.0	0.5	0.9				1.6	--	0.3	54.7	tr	1.35	0.43	tr	tr
80P02534	8-30	A2	S	3.4	2.4	0.9	2.2	--	4.5	0.1	0.7				1.6	--	0.1	42.9	tr	0.80	0.35	1	1
80P02535	30-53	B	S	2.7	2.2	1.3	1.7	--	3.7	0.1	1.0				2.0	--	--	42.0	tr	0.75	0.83	1	1
80P02536	53-86	Bt	S	2.0	2.0	3.2	1.2	--	3.0	0.1	2.4				2.2	--	--	51.4	tr	0.87	0.48	3	2
80P02537	86-107	Bkq1	S	1.5	1.5	5.8	0.9	--	4.2	0.1	2.2				2.6	0.2	--	51.8	tr	0.97	0.62	7	5
80P02538	107-140	Bkq2	S	1.3	1.4	4.3	0.8	--	3.2	0.1	2.3				2.0	--	0.1	50.1	tr	0.84	0.51	5	4
80P02539	140-152	2C	S	2.7	3.2	7.4	1.0	--	2.9	0.1	4.5				5.9	--	0.3	37.6	tr	1.43	0.59	5	4

*** Primary Characterization Data ***

Pedon ID: 80CA093015

( Siskiyou, California )

Print Date: Feb 16 2025 5:36AM

Sampled As	:	Modoc		Fine-loamy, mixed, mesic Aridic Durixeroll
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  80P0458

---

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		6F1c		8E1
80P02533	0-8	A1	S		6.4	7.0	6.3			tr				2000
80P02534	8-30	A2	S		6.8	7.4	7.0			--				2500
80P02535	30-53	B	S		7.1	7.6	7.3			tr				2500
80P02536	53-86	Bt	S		7.3	7.8	7.4			tr				1500
80P02537	86-107	Bkq1	S		7.8	8.2	8.0			4		--		1300
80P02538	107-140	Bkq2	S		7.8	8.2	7.9			3				1500
80P02539	140-152	2C	S		7.6	8.1	7.8			tr		--		1400

---

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 - - - - - - - - - - - - - - - - - - - -)

4D8a1

4G2

80P02533

0-8

A1

S

9

481.5

80P02534

8-30

A2

S

13

315.3

80P02535

30-53

B

S

12

235.1

80P02536

53-86

Bt

S

17

219.9

*** Primary Characterization Data ***

Pedon ID: 80CA093015

( Siskiyou, California )

Print Date: Feb 16 2025 5:36AM

Sampled As	:	Modoc		Fine-loamy, mixed, mesic Aridic Durixeroll
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  80P0458

---

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

80P02535

30.0-53.0

B

tcly

KH 2

MI 1

MT 1

FD 1

KH 17

7.4

2.1

80P02536

53.0-86.0

Bt

tcly

KH 2

MI 1

MT 1

FD 1

KH 28

GI tr

8.4

1.9

80P02537

86.0-107.0

Bkq1

tcly

MT 2

KH 2

MI 1

FD 1

KH 19

GI tr

7.6

1.6

80P02538

107.0-140.0

Bkq2

tcly

MT 2

KH 2

MI 1

FD 1

KH 21

GI 1

7.6

1.4

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm

MINERAL INTERPRETATION:
FD Feldspar	GI Gibbsite	KH Halloysite	MI Mica	MT Montmorillonite

RELATIVE PEAK SIZE:

5 Very Large

4 Large

3 Medium

2 Small

1 Very Small

6 No Peaks

*** Primary Characterization Data ***

Pedon ID: 80CA093015

( Siskiyou, California )

Print Date: Feb 16 2025 5:36AM

Sampled As	:	Modoc		Fine-loamy, mixed, mesic Aridic Durixeroll
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  80P0458

---

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
80P02533	0.0-8.0	A1	csi											OT 67	GS 32	HG 1	PO tr	SS tr

FRACTION INTERPRETATION:
csi - Coarse Silt 0.02-0.05 mm

MINERAL INTERPRETATION:
GS Glass	HG Glass-coated Hornblende	OT Other	PO Plant Opal	SS Sponge Spicule

*** Primary Characterization Data ***

Pedon ID: 80CA093015

( Siskiyou, California )

Print Date: Feb 16 2025 5:36AM

Sampled As	:	Modoc		Fine-loamy, mixed, mesic Aridic Durixeroll
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  80P0458

---

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

80P02534

8.0-30.0

A2

csi

14

GS 25

FP 19

FK 18

AR 12

QZ 5

PR 4

HN 3

FE 3

CR 2

BT 2

GA 2

GC 1

CD 1

HB 1

BY 1

OP 1

TM 1

ZE tr

ZO tr

SS tr

PO tr

MZ tr

DI tr

EN tr

FM tr

80P02535

30.0-53.0

B

csi

18

FP 33

AR 13

GS 11

GA 8

QZ 8

FK 7

CR 4

PR 3

HN 3

TM 2

ZE 1

FE 1

OP 1

PO 1

BT 1

CD 1

GC tr

DI tr

EN tr

FM tr

GN tr

HB tr

ZR tr

RU tr

SS tr

80P02536

53.0-86.0

Bt

csi

18

AR 24

FP 23

GS 14

CR 7

FK 7

QZ 5

PR 4

BT 3

HN 3

HB 2

FE 2

CD 2

OP 1

GA 1

TM 1

SS tr

ZE tr

ZO tr

*** Primary Characterization Data ***

Pedon ID: 80CA093015

( Siskiyou, California )

Print Date: Feb 16 2025 5:36AM

Sampled As	:	Modoc		Fine-loamy, mixed, mesic Aridic Durixeroll
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  80P0458

---

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
														FG tr	GC tr	PO tr	MZ tr	CT tr	DI tr
														FM tr

FRACTION INTERPRETATION:
csi - Coarse Silt 0.02-0.05 mm

MINERAL INTERPRETATION:
AR Weatherable Aggregates	BT Biotite	BY Beryl	CD Chert (Chalcedony	CR Cristobalite
CT Cassiterite	DI Diatoms	EN Enstatite	FE Iron Oxides (Goethite	FG Glass Coated Feldspar
FK Potassium Feldspar	FM Ferromagnesium Mineral	FP Plagioclase Feldspar	GA Glass Aggregates	GC Glass Coated Grain
GN Garnet	GS Glass	HB Hydrobiotite	HN Hornblende	MZ Monazite
OP Opaques	PO Plant Opal	PR Pyroxene	QZ Quartz	RU Rutile
SS Sponge Spicule	TM Tourmaline	ZE Zeolite	ZO Zoisite	ZR Zircon