*** Primary Characterization Data ***

Pedon ID: S2013CO029025

( Delta, Colorado )

Print Date: Feb 16 2026 2:26AM

Sampled as on Jul 29, 2013:	unnamed ; Fine-silty, mixed, active, mesic, shallow Ustic Torriorthents
Revised to :

				United States Department of Agriculture
SSL	-	Project	C2013USCO110   Selenium - Mancos Shale Part II	Natural Resources Conservation Service
	-	Site ID	S2013CO029025   Lat: 38° 37' 21.07" north  Long: 107° 53' 19.25" west  MLRA: 34B	National Soil Survey Center
	-	Pedon No.	13N97174	Kellogg 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
13N11967	A	A	0-15	S2013CO029025-1			SIL	SIC
13N11968	C	C	15-30	S2013CO029025-2			PGR-SIL	SICL
13N11969	Cr1	Cr1	30-51	S2013CO029025-3			WB
13N11970	Cr2	Cr2	51-64	S2013CO029025-4			WB

---

Pedon Calculations
Calculation Name	Result	Units of Measure
Weighted Particles, 0.1-75mm, 75 mm Base	1	% wt
Volume, >2mm, Weighted Average	1	% vol
Clay, total, Weighted Average	control depth 31 beyond last horizon depth 30	% wt
Clay, carbonate free, Weighted Average	control depth 31 beyond last horizon depth 30	% wt
CEC Activity, CEC7/Clay, Weighted Average, CECd, Set 4	control depth 31 beyond last horizon depth 30	(NA)
Weighted averages based on control section: 0-31 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
13N11967	0-15	A	S	sic	43.0	54.9	2.1		1.4	44.2	10.7	1.5	0.4	0.1	0.1	tr	tr	--	--	1	tr
13N11968	15-30	C	S	sicl	39.8	59.2	1.0		1.7	49.6	9.6	0.7	0.2	0.1	tr	tr	1	tr	--	1	1
13N11969	30-51	Cr1	S														23	3	--	--	26
13N11970	51-64	Cr2	S														29	10	--	--	39

*** Primary Characterization Data ***

Pedon ID: S2013CO029025

( Delta, Colorado )

Print Date: Feb 16 2026 2:26AM

Sampled As	:	unnamed		Fine-silty, mixed, active, mesic, shallow Ustic Torriorthents
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  13N97174

---

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	%
										3C2a1a		3D1	4E2a1a1a1
13N11967	0-15	A	S							13.0		1.033	1.026			0.24	0.30
13N11968	15-30	C	S							13.6		1.030	1.027			0.25	0.34
13N11969	30-51	Cr1	S							12.9		1.028	1.027
13N11970	51-64	Cr2	S							13.5		1.027	1.026

---

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 - - - - -)
				4H2a	4H2a	4H2a
13N11967	0-15	A	S	0.55	0.07	0.90	0.1		1
13N11968	15-30	C	S	0.60	0.06	0.67	0.1		1
13N11969	30-51	Cr1	S	0.71	0.12	0.63	0.2		2
13N11970	51-64	Cr2	S	0.67	0.12	0.48	0.2		2

---

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 - - -)			(- - - - - - - - % - - - - - - - -)
				4B1a1a	4B1a1a	4B1a1a	4B1a1a		4B2b1a1				4B1a1a
13N11967	0-15	A	S	60.4*	16.5	20.0	0.5	97.4	0.1				10.3				100
13N11968	15-30	C	S	39.5*	24.6	19.5	0.4	84.0	--				10.1				100
13N11969	30-51	Cr1	S	33.4*	26.0	15.4	0.5	75.3	--				10.3				100
13N11970	51-64	Cr2	S	41.9*	27.0	14.9	0.5	84.3	0.2				10.0				100

^*Extractable Ca may contain Ca from calcium carbonate or gypsum., CEC7 base saturation set to 100.

*** Primary Characterization Data ***

Pedon ID: S2013CO029025

( Delta, Colorado )

Print Date: Feb 16 2026 2:26AM

Sampled As	:	unnamed		Fine-silty, mixed, active, mesic, shallow Ustic Torriorthents
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  13N97174

---

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 - -)		%
				4F2	4F2	4F2	4F2	4F2	4F2	4F2	4F2	4F2	4F2	4F2	4F2	4F2	4F2	4F2		4F2	4F1a1a1
13N11967	0-15	A	S	20.9	40.0	206.7	1.0	--	0.6	--	12.2	--	--	--	228.6	--	26.2	62.0	0.9	16.86	8.90	70	37
13N11968	15-30	C	S	21.2	101.5	192.8	0.9	--	0.3	--	14.5	--	--	--	271.3	--	29.0	74.1	1.1	17.77	9.14	52	25
13N11969	30-51	Cr1	S	20.7	107.0	152.7	0.7	--	0.3	--	10.7	--	--	--	238.7	--	19.9	73.6	0.9	15.37	7.58	41	19
13N11970	51-64	Cr2	S	20.9	97.5	140.9	0.8	--	0.3	--	8.9	--	--	--	229.6	--	15.7	73.9	0.9	14.54	7.07	45	18

---

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	4F2			4E1a1a1a1		4E2a1a1a1
13N11967	0-15	A	S		8.4	8.4	8.3			4		3
13N11968	15-30	C	S		8.2	8.1	8.1			4		1
13N11969	30-51	Cr1	S		8.2	8.1	8.0			4		tr
13N11970	51-64	Cr2	S		8.1	8.1	8.0			4		1

---

Trace Elements Tier 1				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-
	Depth			Ag	As	Ba	Be	Cd	Co	Cr	Cu	Mn	Mo		Hg
Layer	(cm)	Horz	Prep	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg		ug/kg
				4H1a	4H1a	4H1a	4H1a	4H1a	4H1a	4H1a	4H1a	4H1a	4H1a		4H1a
13N11967	0-15	A	HM	0.06	12.52	226.72	1.80	0.12	8.66	40.59	18.57	217.17	0.55		9
13N11968	15-30	C	HM	0.07	12.79	180.77	1.69	0.15	8.72	39.12	17.64	283.09	0.58		31
13N11969	30-51	Cr1	HM	0.08	13.79	243.39	1.78	0.11	8.69	40.84	18.91	175.00	0.53		34
13N11970	51-64	Cr2	HM	0.07	13.16	183.44	1.76	0.12	8.66	38.54	18.30	279.08	0.58		25

*** Primary Characterization Data ***

Pedon ID: S2013CO029025

( Delta, Colorado )

Print Date: Feb 16 2026 2:26AM

Sampled As	:	unnamed		Fine-silty, mixed, active, mesic, shallow Ustic Torriorthents
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  13N97174

---

Trace Elements Tier 2				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-
	Depth			Ni	P	Pb	Sb	Se	Sn	Sr	Tl	V	W	Zn
Layer	(cm)	Horz	Prep	mg/kg	mg/kg	mg/kg	mg/kg	ug/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg
				4H1a	4H1a	4H1a	4H1a	4H1a	4H1a	4H1a		4H1a	4H1a	4H1a
13N11967	0-15	A	HM	20.62	511.17	28.51	0.51	1204.24	1.64	119.61		82.84	0.01	99.26
13N11968	15-30	C	HM	20.29	521.28	28.39	0.51	1633.36	1.59	72.44		81.06	0.01	93.03
13N11969	30-51	Cr1	HM	20.07	535.87	28.41	0.49	1543.69	1.68	151.22		84.38	0.01	97.65
13N11970	51-64	Cr2	HM	20.55	538.00	29.04	0.52	1430.04	1.62	64.59		80.97	0.01	97.73

---

Major Elements				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-
	Depth			Al	Ca	Fe	K	Mg	Mn	Na	P	Si	Sr	Ti	Zr
Layer	(cm)	Horz	Prep	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg
				4H1b	4H1b	4H1b	4H1b	4H1b	4H1b	4H1b	4H1b	4H1b	4H1b	4H1b	4H1b
13N11967	0-15	A	HM	66096	17163	29195	23409	13000	258	12049	559	250312	126	3246	115
13N11968	15-30	C	HM	73727	14759	30377	25394	13958	330	12277	585	248839	93	3237	114
13N11969	30-51	Cr1	HM	76085	14287	31276	26182	14868	205	11684	673	256857	165	3309	118
13N11970	51-64	Cr2	HM	67006	14928	33130	24985	13079	342	12182	631	267415	84	3430	124

^1,1,2,3 Multiple values present due to instrumentation or analyzed size fraction. See laboratory for more information.

*** Primary Characterization Data ***

Pedon ID: S2013CO029025

( Delta, Colorado )

Print Date: Feb 16 2026 2:26AM

Sampled As	:	unnamed		Fine-silty, mixed, active, mesic, shallow Ustic Torriorthents
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  13N97174

---

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

7A1b1

7A2a

tion

Layer

(cm)

Horz

ion

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

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

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

mg g-1

13N11968

15.0-30.0

C

tcly

MI 3

KK 3

MT 2

VR 2

FP 2

KK 28

CMIX

QZ 1

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm

MINERAL INTERPRETATION:
FP Plagioclase Feldspar	KK Kaolinite	MI Mica	MT Montmorillonite	QZ Quartz
VR Vermiculite

RELATIVE PEAK SIZE:

5 Very Large

4 Large

3 Medium

2 Small

1 Very Small

6 No Peaks

INTERPRETATION (BY HORIZON):
CMIX - Mixed Clay