*** Primary Characterization Data ***

Pedon ID: 72CO041009

( El Paso, Colorado )

Print Date: Dec 6 2025 4:39PM

Sampled as :	Stapleton
Revised to :

				United States Department of Agriculture
SSL	-	Project	NL72CO004   EL PASO - PUEBLO	Natural Resources Conservation Service
	-	Site ID	72CO041009	National Soil Survey Center
	-	Pedon No.	72C0038	Soil Survey Laboratory
	-	General Methods 1B1A, 2A1, 2B		Lincoln, Nebraska 68508-3866

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Layer	Horizon	Orig Hzn	Depth (cm)	Field Label 1	Field Label 2	Field Label 3	Field Texture	Lab Texture
72C00221	A1	A1	0-26	72221			SICL
72C00222	AC	AC	26-46	72222			SICL
72C00223	C1	C1	46-64	72223			SICL
72C00224	C2	C2	64-126	72224			SICL

---

Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	0	(NA)
Volume, >2mm, Weighted Average	26	% vol
Weighted averages based on control section: 25-100 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
																	3B1	3B1	3B1
72C00221	0-26	A1	S														18	3	--
72C00222	26-46	AC	S														29	11	--
72C00223	46-64	C1	S														31	4	--
72C00224	64-126	C2	S														28	9	--

*** Primary Characterization Data ***

Pedon ID: 72CO041009

( El Paso, Colorado )

Print Date: Dec 6 2025 4:39PM

Sampled As	:	Stapleton
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  72C0038

---

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	4B1c	3C2a1a		3D1
72C00221	0-26	A1	S	1.37	1.43			15.0	13.0	6.5		1.005
72C00222	26-46	AC	S	1.54	1.59			7.9	7.4	4.5		1.005
72C00223	46-64	C1	S	1.61	1.64			9.9	9.8	4.1		1.005
72C00224	64-126	C2	S	1.61						3.0		1.005

---

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 - - - - -)

6B3a

6A1c

72C00221

0-26

A1

S

0.115

1.28

72C00222

26-46

AC

S

0.033

1.33

72C00223

46-64

C1

S

0.013

0.12

72C00224

64-126

C2

S

0.04

---

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						5A8b
72C00221	0-26	A1	S	6.2	1.2	0.5	0.3						8.3
72C00222	26-46	AC	S	5.3	1.5	0.4	0.2						6.7
72C00223	46-64	C1	S	4.6	1.5	0.4	0.2						6.1
72C00224	64-126	C2	S	3.4	1.2	0.5	0.2						4.6

*** Primary Characterization Data ***

Pedon ID: 72CO041009

( El Paso, Colorado )

Print Date: Dec 6 2025 4:39PM

Sampled As	:	Stapleton
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  72C0038

---

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

72C00221

0-26

A1

S

5.9

6.4

72C00222

26-46

AC

S

6.1

6.9

72C00223

46-64

C1

S

6.1

6.9

72C00224

64-126

C2

S

6.1

7.0