*** Primary Characterization Data ***

Pedon ID: 81WA059002

( Skamania, Washington )

Print Date: Nov 13 2025 8:53PM

Sampled as on Feb 1, 1981:	Sinnice ; Ashy over pumiceous or cindery Entic Cryandept
Revised to correlated on Nov 28, 2007:	Sinnice ; Ashy over pumiceous or cindery Entic Cryandepts

				United States Department of Agriculture
SSL	-	Project	CP81WA242   MOUNT ST HELENS	Natural Resources Conservation Service
	-	Site ID	S1981WA059002   Lat: 46° 16' 15.00" north  Long: 122° 4' 45.01" west  MLRA: 3	National Soil Survey Center
	-	Pedon No.	81P0540	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
81P03195	2A	2A	34-44				VFSL	COSL
81P03196	2BA	2BA	44-77				LS	COS
81P03197	3Bw1	3Bw1	77-79				LS	SIL
81P03198	3Bw2	3Bw2	79-85				LS	SIL
81P03199	3Bw3	3Bw3	85-120				FSL	LS
81P03200	3Bw4	3Bw4	120-135				LS	FSL
81P03201	4C1	4C1	135-145				S	LCOS
81P03202	4C2	4C2	145-179				S	COS
81P03203	C1	C1	0-11				VFSL	LCOS
81P03204	C2	C2	11-34				VFSL	COS

---

Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	2.31	(NA)
Clay, carbonate free, Weighted Average	2	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	72	% wt
Volume, >2mm, Weighted Average	44	% vol
Clay, total, Weighted Average	2	% wt
Weighted averages based on control section: 25-100 cm

*** Primary Characterization Data ***

Pedon ID: 81WA059002

( Skamania, Washington )

Print Date: Nov 13 2025 8:53PM

Sampled As	:	Sinnice		Ashy over pumiceous or cindery Entic Cryandept
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  81P0540

---

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
81P03195	34-44	2A	S	cosl	4.4	31.8	63.8			13.8	18.0	14.8	12.4	7.6	7.2	21.8	18	12	17	73	47
81P03196	44-77	2BA	S	cos	2.5	2.6	94.9			2.5	0.1	1.1	3.4	10.9	25.6	53.9	7	11	77	100	95
81P03197	77-79	3Bw1	S	sil	4.0	50.0	46.0			21.7	28.3	20.2	11.5	4.5	5.1	4.7	1	1	85	90	87
81P03198	79-85	3Bw2	S	sil	3.4	51.1	45.5			23.4	27.7	19.5	12.1	5.9	5.0	3.0	2	1	--	28	3
81P03199	85-120	3Bw3	S	ls	2.0	19.7	78.3			9.3	10.4	12.1	36.5	24.7	4.4	0.6	tr	1	--	67	1
81P03200	120-135	3Bw4	S	fsl	4.9	44.0	51.1			22.1	21.9	15.4	13.7	9.9	6.9	5.2	7	17	6	55	30
81P03201	135-145	4C1	S	lcos	3.7	20.7	75.6			12.3	8.4	8.1	13.6	9.4	17.3	27.2	3	6	85	98	94
81P03202	145-179	4C2	S	cos	1.6	9.4	89.0			5.6	3.8	3.5	6.4	11.3	32.5	35.3	4	11	82	100	97
81P03203	0-11	C1	S	lcos	2.0	16.9	81.1			12.1	4.8	3.9	7.7	25.2	30.9	13.4	13	32	14	91	59
81P03204	11-34	C2	S	cos	2.0	1.7	96.3			0.4	1.3	8.7	24.2	23.8	21.4	18.2	12	12	14	92	38

---

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
81P03195	34-44	2A	S	0.50	0.60	0.053			61.0	33.8		1.032		0.12		8.41	7.68
81P03196	44-77	2BA	S							4.8		1.005				1.68	1.92
81P03197	77-79	3Bw1	S							9.6		1.018				3.80	2.40
81P03198	79-85	3Bw2	S	0.97	1.02	0.017			27.3	6.0		1.012		0.21		2.44	1.76
81P03199	85-120	3Bw3	S							1.3		1.005				0.75	0.65
81P03200	120-135	3Bw4	S	0.69	0.75	0.025			57.0	3.0		1.007		0.34		0.65	0.61
81P03201	135-145	4C1	S							2.7		1.007				0.97	0.73
81P03202	145-179	4C2	S							2.3		1.003				1.31	1.44
81P03203	0-11	C1	S							2.6		1.002				0.70	1.30
81P03204	11-34	C2	S							2.1		1.001				0.60	1.05

*** Primary Characterization Data ***

Pedon ID: 81WA059002

( Skamania, Washington )

Print Date: Nov 13 2025 8:53PM

Sampled As	:	Sinnice		Ashy over pumiceous or cindery Entic Cryandept
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  81P0540

---

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

4F

81P03199

85-120

3Bw3

S

NP

81P03204

11-34

C2

S

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 - - - - -)
								6A1c		6C2b	6G7a			8J	6C9a	6G12	6V2	6D5b		6C8a	6G10
81P03195	34-44	2A	S					15.11		0.2	0.1		0.17	0.15	0.16	0.09	--	88.9		0.1	0.1
81P03196	44-77	2BA	S					1.13		0.2	0.1		--	tr	--	--	--	--		0.1	0.1
81P03197	77-79	3Bw1	S					4.61		0.4	0.3		0.36	0.34	0.23	0.25	--	--		0.2	0.3
81P03198	79-85	3Bw2	S					2.65		0.3	0.3		0.36	0.16	0.30	0.21	0.02	--		0.2	0.3
81P03199	85-120	3Bw3	S					0.44		0.2	0.2		0.38	0.05	0.33	0.21	0.11	--		0.1	0.1
81P03200	120-135	3Bw4	S					0.83		0.2	0.2		0.39	0.07	0.25	0.26	0.08	--		0.1	0.2
81P03201	135-145	4C1	S					0.61		0.3	0.2		0.49	0.08	0.41	0.28	0.08	--		0.1	0.2
81P03202	145-179	4C2	S					0.31		0.3	0.1		0.32	0.04	0.44	0.10	0.03	65.7		0.1	0.1
81P03203	0-11	C1	S					0.08		0.2	tr		0.14	0.02	0.22	0.02	--	--		--	tr
81P03204	11-34	C2	S					0.25		0.2	tr		0.15	0.02	0.27	0.01	--	--		--	tr

*** Primary Characterization Data ***

Pedon ID: 81WA059002

( Skamania, Washington )

Print Date: Nov 13 2025 8:53PM

Sampled As	:	Sinnice		Ashy over pumiceous or cindery Entic Cryandept
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  81P0540

---

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	6G9a		5A3a	5A8b	5A3b	5G1	5C3	5C1
81P03195	34-44	2A	S	11.0	2.6	0.2	0.6	14.4	38.5	0.6		52.9	37.0	15.0	4	27	39
81P03196	44-77	2BA	S	0.6	0.2	tr	0.1	0.9	6.0	0.8		6.9	4.2	1.7	47	13	21
81P03197	77-79	3Bw1	S	1.6	0.4	0.1	0.2	2.3	19.3	1.8		21.6	15.2	4.1	44	11	15
81P03198	79-85	3Bw2	S	0.6	0.1	tr	0.1	0.8	12.0	1.2		12.8	8.3	2.0	60	6	10
81P03199	85-120	3Bw3	S	0.1	tr	--	0.2	0.3	4.0	0.1		4.3	1.5	0.4	25	7	20
81P03200	120-135	3Bw4	S	0.1	0.1	tr	0.1	0.3	6.2	0.4		6.5	3.2	0.7	57	5	9
81P03201	135-145	4C1	S	0.2	0.1	tr	0.2	0.5	6.5	0.5		7.0	3.6	1.0	50	7	14
81P03202	145-179	4C2	S	0.1	tr	tr	0.1	0.2	3.1	0.3		3.3	2.1	0.5	60	6	10
81P03203	0-11	C1	S	0.8	0.3	0.1	0.1	1.3	1.0	0.1		2.3	1.4	1.4	7	57	93
81P03204	11-34	C2	S	0.9*	0.3	0.2	0.1	1.5	1.5	--		3.0	1.2			50	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 - -)

%

81P03195

34-44

2A

S

1

81P03196

44-77

2BA

S

--

81P03197

77-79

3Bw1

S

1

81P03198

79-85

3Bw2

S

--

81P03199

85-120

3Bw3

S

--

81P03200

120-135

3Bw4

S

--

81P03201

135-145

4C1

S

--

81P03202

145-179

4C2

S

--

81P03203

0-11

C1

S

7

81P03204

11-34

C2

S

17

*** Primary Characterization Data ***

Pedon ID: 81WA059002

( Skamania, Washington )

Print Date: Nov 13 2025 8:53PM

Sampled As	:	Sinnice		Ashy over pumiceous or cindery Entic Cryandept
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  81P0540

---

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			4C1a1a1
81P03195	34-44	2A	S						6.8
81P03196	44-77	2BA	S		4.3	4.8			7.5
81P03197	77-79	3Bw1	S		4.6	4.8			9.1
81P03198	79-85	3Bw2	S		4.7	4.9			10.1
81P03199	85-120	3Bw3	S		5.0	5.4			9.9
81P03200	120-135	3Bw4	S		5.0	5.2			10.3
81P03201	135-145	4C1	S		5.0	5.2			10.3
81P03202	145-179	4C2	S		4.9	5.1			9.6
81P03203	0-11	C1	S		4.8	5.1			7.5
81P03204	11-34	C2	S		5.0	5.2			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

NK

81P03195

34-44

2A

S

4.0

4.7

*** Primary Characterization Data ***

Pedon ID: 81WA059002

( Skamania, Washington )

Print Date: Nov 13 2025 8:53PM

Sampled As	:	Sinnice		Ashy over pumiceous or cindery Entic Cryandept
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  81P0540

---

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									7C3								tion
Layer	(cm)	Horz	ion	( - - - - - - - - - peak size - - - - - - - - - - )					(- - - - - - - - - % - - - - - - - - - -)				(- - - - - - - - - - - - - - - - - - - - - % - - - - - - - - - - - - - - - - - - - - -)							mg g-1
81P03196	44.0-77.0	2BA	tcly	VR 1											0.7			0.2
81P03199	85.0-120.0	3Bw3	tcly	NX 6											1.7			0.3
81P03202	145.0-179.0	4C2	tcly	VR 1											2.1			0.5

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm

MINERAL INTERPRETATION:
NX Non-Crystalline	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: 81WA059002

( Skamania, Washington )

Print Date: Nov 13 2025 8:53PM

Sampled As	:	Sinnice		Ashy over pumiceous or cindery Entic Cryandept
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  81P0540

---

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

81P03195

34.0-44.0

2A

vfs

GA 53

OT 38

GS 9

81P03196

44.0-77.0

2BA

vfs

OT 71

GA 19

GS 10

81P03197

77.0-79.0

3Bw1

vfs

OT 59

GA 36

GS 5

81P03198

79.0-85.0

3Bw2

vfs

OT 56

GA 38

GS 6

81P03199

85.0-120.0

3Bw3

vfs

OT 84

GA 14

GS 2

81P03200

120.0-135.0

3Bw4

vfs

OT 46

GA 32

GS 22

81P03201

135.0-145.0

4C1

vfs

OT 59

GA 22

GS 19

81P03202

145.0-179.0

4C2

vfs

OT 74

GS 17

GA 9

81P03203

0.0-11.0

C1

vfs

OT 62

GA 23

GS 15

81P03204

11.0-34.0

C2

vfs

OT 62

GA 34

GS 4

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

MINERAL INTERPRETATION:
GA Glass Aggregates	GS Glass	OT Other