*** Primary Characterization Data ***

Pedon ID: 79AK170007

( Matanuska-Susitna Borough, Alaska )

Print Date: Apr 29 2025 4:54PM

Sampled as on Jul 30, 1979:	Alder ; Loamy, mixed Entic Cryorthods
Revised to correlated on Apr 1, 1986:	(unnamed) ; Medial over loamy-skeletal, mixed Spodic Haplocryand

				United States Department of Agriculture
SSL	-	Project	CP79AK241   MATANUSKA-SUSITNA DIVISION	Natural Resources Conservation Service
	-	Site ID	S1979AK170007   Lat: 61° 27' 0.00" north  Long: 150° 59' 0.01" west  MLRA: 170	National Soil Survey Center
	-	Pedon No.	79P0406	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
79P02178	Oi	OI	10-0					L
79P02179	A	A1	0-8					L
79P02180	B	B'	8-30					SIL
79P02181	B	B	8-30					SIL
79P02182	2AB	2AB	30-38					L
79P02183	2C	2C	38-152					COSL
79P02184	A	A1	0-8					L
79P02185	B	B'	8-30					SIL
79P02186	B	B'	8-30					SIL

---

---

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
79P02178	10-0	Oi	S	l	18.3	48.6	33.1			26.0	22.6	4.5	7.8	6.4	8.3	6.1	1	--	--	29	1
79P02179	0-8	A	S	l	11.0	45.8	43.2			26.9	18.9	17.3	9.8	6.9	5.4	3.8	2	1	--	28	3
79P02180	8-30	B	S	sil	6.7	71.8	21.5			50.9	20.9	18.3	2.3	0.7	0.2	tr	tr	--	--	3	--
79P02181	8-30	B	S	sil	6.5	56.9	36.6			35.3	21.6	25.3	5.1	2.4	1.9	1.9	2	tr	--	13	2
79P02182	30-38	2AB	S	l	16.6	34.3	49.1			16.6	17.7	7.0	9.5	10.4	11.5	10.7	9	2	--	48	11
79P02183	38-152	2C	S	cosl	7.4	22.1	70.5			8.9	13.2	10.2	8.5	13.9	18.9	19.0	22	10	5	75	37
79P02184	0-8	A	S	l	12.8	42.4	44.8			23.9	18.5	15.1	9.0	8.1	8.3	4.3	2	tr	--	31	2
79P02185	8-30	B	S	sil	4.0	63.7	32.3			48.3	15.4	19.2	10.2	1.3	0.5	1.1	tr	--	--	13	tr
79P02186	8-30	B	S	sil	8.9	50.3	40.8			28.8	21.5	19.2	13.8	3.6	2.2	2.0	1	tr	--	22	1

*** Primary Characterization Data ***

Pedon ID: 79AK170007

( Matanuska-Susitna Borough, Alaska )

Print Date: Apr 29 2025 4:54PM

Sampled As	:	Alder		Loamy, mixed Entic Cryorthods
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  79P0406

---

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		4B2b	3D1		4C1		8D1	8D1
79P02178	10-0	Oi	S									1.057				3.26	7.34
79P02178	10-0	Oi	M								134.4
79P02179	0-8	A	S									1.040				3.31	3.29
79P02179	0-8	A	M								36.2
79P02180	8-30	B	S	0.88	0.92	0.015			50.0			1.028		0.31		2.16	2.22
79P02180	8-30	B	M								14.9
79P02181	8-30	B	S	0.88	0.92	0.015			50.0			1.037		0.24		4.05	3.40
79P02181	8-30	B	M								22.1
79P02182	30-38	2AB	S	0.98	1.08	0.032			38.5			1.031		0.13		1.36	1.47
79P02182	30-38	2AB	M								24.4
79P02183	38-152	2C	S									1.017				2.00	1.00
79P02183	38-152	2C	M								7.4
79P02184	0-8	A	S									1.039				2.95	2.80
79P02184	0-8	A	M								35.9
79P02185	8-30	B	S									1.030				4.33	4.43
79P02185	8-30	B	M								17.7
79P02186	8-30	B	S									1.042				3.62	2.60
79P02186	8-30	B	M								23.1

---

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

79P02180

8-30

B

S

NP

79P02181

8-30

B

S

NP

79P02183

38-152

2C

S

NP

*** Primary Characterization Data ***

Pedon ID: 79AK170007

( Matanuska-Susitna Borough, Alaska )

Print Date: Apr 29 2025 4:54PM

Sampled As	:	Alder		Loamy, mixed Entic Cryorthods
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  79P0406

---

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			8J	6C9a	6G12	6V2			6C5a	6G5a
79P02178	10-0	Oi	S					37.18					0.53	0.42	0.40	0.33
79P02179	0-8	A	S		0.610			13.45	22	0.8	1.0		1.34	1.90	0.67	1.00	0.04			0.6	0.9
79P02180	8-30	B	S		0.172			3.69	21	0.6	1.4		2.03	0.80	0.48	1.79	0.49			0.4	0.7
79P02181	8-30	B	S		0.364			6.87	19	0.7	1.6		2.04	1.90	0.60	1.74	0.32			0.6	1.3
79P02182	30-38	2AB	S		0.318			5.91	19	1.2	1.1		1.82	0.90	0.77	1.44	0.35			0.8	0.9
79P02183	38-152	2C	S					2.25		0.7	0.7		0.84	0.31	0.32	0.68	0.15			0.3	0.5
79P02184	0-8	A	S					12.41		0.8	0.7		1.04	1.70	0.69	0.70	0.02			0.7	0.7
79P02185	8-30	B	S					4.72		0.6	1.5		1.91	1.00	0.46	1.68	0.43			0.4	0.8
79P02186	8-30	B	S					8.01		0.8	1.6		1.97	2.00	0.65	1.65	0.20			0.7	1.5

---

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
79P02178	10-0	Oi	S	7.2	2.8	0.1	1.2	11.3	65.5			76.8	59.7			15	19
79P02179	0-8	A	S	0.7	0.2	0.1	0.2	1.2	64.1	8.6		65.3	36.4	9.8	88	2	3
79P02180	8-30	B	S	0.3	tr	0.1	0.1	0.5	33.2	1.9		33.7	14.5	2.4	79	1	3
79P02181	8-30	B	S	0.5	0.1	0.1	0.1	0.8	53.0	2.5		53.8	26.3	3.3	76	1	3
79P02182	30-38	2AB	S	1.6	0.1	0.1	0.1	1.9	38.9	3.9		40.8	22.5	5.8	67	5	8
79P02183	38-152	2C	S	2.1	0.1	0.3	0.1	2.6	20.2	1.6		22.8	14.8	4.2	38	11	18
79P02184	0-8	A	S	1.1	0.4	0.1	0.2	1.8	63.3	9.0		65.1	37.7	10.8	83	3	5
79P02185	8-30	B	S	0.3	tr	0.1	0.1	0.5	39.3	2.5		39.8	17.3	3.0	83	1	3
79P02186	8-30	B	S	0.5	0.1	0.1	0.1	0.8	58.9	5.8		59.7	32.2	6.6	88	1	2

*** Primary Characterization Data ***

Pedon ID: 79AK170007

( Matanuska-Susitna Borough, Alaska )

Print Date: Apr 29 2025 4:54PM

Sampled As	:	Alder		Loamy, mixed Entic Cryorthods
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  79P0406

---

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 - -)

%

79P02178

10-0

Oi

S

tr

79P02179

0-8

A

S

tr

79P02180

8-30

B

S

1

79P02181

8-30

B

S

tr

79P02182

30-38

2AB

S

tr

79P02183

38-152

2C

S

2

79P02184

0-8

A

S

tr

79P02185

8-30

B

S

1

79P02186

8-30

B

S

tr

---

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					8E1
79P02179	0-8	A	S		4.3	4.6			10.6
79P02180	8-30	B	S		4.6	5.2			11.5
79P02181	8-30	B	S		4.5	4.7			11.6
79P02182	30-38	2AB	S		4.6	5.3			11.3
79P02183	38-152	2C	S		4.6	5.3			11.2					72000
79P02184	0-8	A	S		3.9	4.6			9.3
79P02185	8-30	B	S		4.6	5.3			11.6
79P02186	8-30	B	S		4.4	4.7			11.6

*** Primary Characterization Data ***

Pedon ID: 79AK170007

( Matanuska-Susitna Borough, Alaska )

Print Date: Apr 29 2025 4:54PM

Sampled As	:	Alder		Loamy, mixed Entic Cryorthods
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  79P0406

---

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

6S4

79P02178

10-0

Oi

S

1

79P02179

0-8

A

S

84

79P02180

8-30

B

S

62

79P02181

8-30

B

S

85

79P02182

30-38

2AB

S

80

79P02183

38-152

2C

S

34

79P02184

0-8

A

S

68

79P02185

8-30

B

S

71

79P02186

8-30

B

S

86

---

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

79P02178

10-0

Oi

S

3.6

4.4

*** Primary Characterization Data ***

Pedon ID: 79AK170007

( Matanuska-Susitna Borough, Alaska )

Print Date: Apr 29 2025 4:54PM

Sampled As	:	Alder		Loamy, mixed Entic Cryorthods
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  79P0406

---

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

79P02180

8.0-30.0

B

tcly

NX 6

79P02181

8.0-30.0

B

tcly

NX 6

79P02182

30.0-38.0

2AB

tcly

VR 1

KK 1

MI 1

8.7

0.5

79P02183

38.0-152.0

2C

tcly

VR 1

KK 1

MI 1

8.1

0.8

79P02184

0.0-8.0

A

tcly

MI 1

2.3

0.3

79P02185

8.0-30.0

B

tcly

NX 6

79P02186

8.0-30.0

B

tcly

NX 6

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm

MINERAL INTERPRETATION:
KK Kaolinite	MI Mica	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: 79AK170007

( Matanuska-Susitna Borough, Alaska )

Print Date: Apr 29 2025 4:54PM

Sampled As	:	Alder		Loamy, mixed Entic Cryorthods
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  79P0406

---

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

79P02180

8.0-30.0

B

vfs

5

GA 35

FP 26

GS 23

HN 10

QZ 3

PR 1

KK 1

FK 1

AR 1

OP 1

VR tr

79P02181

8.0-30.0

B

vfs

3

FP 34

GA 29

GS 16

HN 11

PR 5

FK 2

QZ 2

AR 2

OP 1

VR tr

KK tr

79P02182

30.0-38.0

2AB

vfs

14

GA 26

FP 24

VR 19

QZ 12

GS 6

HN 6

PR 4

OP 1

KK 1

AR 1

FK 1

ZR tr

79P02183

38.0-152.0

2C

vfs

23

VR 35

QZ 20

HN 14

FP 13

GA 6

AR 3

GS 2

OP 2

PR 2

FK 2

KK 1

ZR tr

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

MINERAL INTERPRETATION:
AR Weatherable Aggregates	FK Potassium Feldspar	FP Plagioclase Feldspar	GA Glass Aggregates	GS Glass
HN Hornblende	KK Kaolinite	OP Opaques	PR Pyroxene	QZ Quartz
VR Vermiculite	ZR Zircon

*** Primary Characterization Data ***

Pedon ID: 79AK170007

( Matanuska-Susitna Borough, Alaska )

Print Date: Apr 29 2025 4:54PM

Sampled As	:	Alder		Loamy, mixed Entic Cryorthods
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  79P0406

---

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

7B

tion

Layer

(cm)

Horz

ion

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

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

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

mg g-1

79P02182

30.0-38.0

2AB

vfs

14

GA 26

FP 24

VR 19

QZ 12

GS 6

HN 6

PR 4

OP 1

KK 1

AR 1

FK 1

ZR tr

79P02183

38.0-152.0

2C

vfs

23

VR 35

QZ 20

HN 14

FP 13

GA 6

AR 3

GS 2

OP 2

PR 2

FK 2

KK 1

ZR tr