*** Primary Characterization Data ***

Pedon ID: S2013CO029009

( Delta, Colorado )

Print Date: Dec 7 2025 10:54PM

Sampled as on May 28, 2013:	unnnamed ; Fine-silty, mixed, active, mesic, shallow Aridic Haplustepts
Revised to :

				United States Department of Agriculture
SSL	-	Project	C2013USCO110   Selenium - Mancos Shale Part II	Natural Resources Conservation Service
	-	Site ID	S2013CO029009   Lat: 38° 37' 21.07" north  Long: 107° 53' 19.25" west  MLRA: 34B	National Soil Survey Center
	-	Pedon No.	13N96756	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
13N09773	A	A	0-8	S2013CO029009-1			SIL	SICL
13N09774	Btyz	Btyz	8-23	S2013CO029009-2			SIL	SICL
13N09775	BCz	BCz	23-38	S2013CO029009-3			PGRV-SICL	SICL
13N09776	Cr	Cr	38-51	S2013CO029009-4			WB	SICL

---

Pedon Calculations
Calculation Name	Result	Units of Measure
Clay, total, Weighted Average	36	% wt
Clay, carbonate free, Weighted Average	36	% wt
CEC Activity, CEC7/Clay, Weighted Average, CECd, Set 4	0.45	(NA)
Weighted Particles, 0.1-75mm, 75 mm Base	9	% wt
Weighted averages based on control section: 25-38 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
13N09773	0-8	A	S	sicl	34.7	57.7	7.6		--	32.7	25.0	5.9	1.0	0.4	0.2	0.1	1	3	--	6	4
13N09774	8-23	Btyz	S	sicl	37.6	55.8	6.6		--	32.1	23.7	5.4	0.6	0.2	0.2	0.2	1	3	--	5	4
13N09775	23-38	BCz	S	sicl	35.8	58.8	5.4		--	34.2	24.6	4.9	0.4	tr	tr	0.1	8	1	--	9	9
13N09776	38-51	Cr	S	sicl	35.7	59.4	4.9		--	34.5	24.9	4.3	0.4	0.1	0.1	tr	16	40	5	61	61

*** Primary Characterization Data ***

Pedon ID: S2013CO029009

( Delta, Colorado )

Print Date: Dec 7 2025 10:54PM

Sampled As	:	unnnamed		Fine-silty, mixed, active, mesic, shallow Aridic Haplustepts
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  13N96756

---

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
13N09773	0-8	A	S							10.7		1.030	1.030			0.50	0.31
13N09774	8-23	Btyz	S							8.0		1.068	1.034			0.39	0.21
13N09775	23-38	BCz	S							9.2		1.057	1.034			0.45	0.26
13N09776	38-51	Cr	S							10.1		1.053	1.032			0.37	0.28

---

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
13N09773	0-8	A	S	2.13	0.19	0.34	1.7		9
13N09774	8-23	Btyz	S	1.21	0.13	3.78	1.1		8
13N09775	23-38	BCz	S	0.85	0.16	2.58	0.7		4
13N09776	38-51	Cr	S	0.70	0.08	2.59	0.5		6

---

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
13N09773	0-8	A	S	70.7*	7.5	1.6	1.7	81.5					17.3				100
13N09774	8-23	Btyz	S	256.6*	5.0	2.9	1.5	266.0	--				14.8				100
13N09775	23-38	BCz	S	131.9*	11.2	8.7	0.5	152.3	0.3				16.0				100
13N09776	38-51	Cr	S	129.1*	11.0	8.5	0.5	149.1	1.1				13.1				100

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

*** Primary Characterization Data ***

Pedon ID: S2013CO029009

( Delta, Colorado )

Print Date: Dec 7 2025 10:54PM

Sampled As	:	unnnamed		Fine-silty, mixed, active, mesic, shallow Aridic Haplustepts
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  13N96756

---

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
13N09773	0-8	A	S	28.5	9.5	14.9	2.6	--	7.4	--	1.0	--	--	--	43.6	0.1	--	55.5	0.2	3.91	2.43	5	3
13N09774	8-23	Btyz	S	27.5	8.5	29.3	2.6	--	4.3	--	1.3	--	--	--	57.8	--	--	51.1	0.2	4.84	3.06	10	7
13N09775	23-38	BCz	S	29.9	23.6	78.1	0.8	--	2.4	--	44.8	--	--	--	74.6	0.1	0.9	57.6	0.4	9.41	4.82	26	15
13N09776	38-51	Cr	S	23.4	336.0	164.8	0.9	--	2.6	1.2	57.1	--	--	--	459.4	--	2.1	60.8	1.2	23.10	9.60	--	12

---

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
13N09773	0-8	A	S		8.0	8.1	7.8			3		tr
13N09774	8-23	Btyz	S		7.9	8.0	7.9			1		17
13N09775	23-38	BCz	S		7.9	8.0	7.9			1		11
13N09776	38-51	Cr	S		7.8	7.8	7.8			2		10

---

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
13N09773	0-8	A	HM	0.10	8.76	181.15	1.50	0.21	7.22	41.47	14.56	229.86	1.13		37
13N09774	8-23	Btyz	HM	0.09	7.33	215.32	1.31	0.15	6.32	37.92	12.67	174.13	1.01		34
13N09775	23-38	BCz	HM	0.10	7.18	134.87	1.42	0.13	6.61	39.88	13.08	184.79	0.99		26
13N09776	38-51	Cr	HM	0.10	8.36	122.22	1.48	0.09	8.05	39.69	14.58	255.48	0.86		49

*** Primary Characterization Data ***

Pedon ID: S2013CO029009

( Delta, Colorado )

Print Date: Dec 7 2025 10:54PM

Sampled As	:	unnnamed		Fine-silty, mixed, active, mesic, shallow Aridic Haplustepts
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  13N96756

---

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
13N09773	0-8	A	HM	18.20	788.25	20.15	0.36	938.68	1.40	109.13		72.42	0.14	81.43
13N09774	8-23	Btyz	HM	16.22	558.48	16.35	0.30	880.75	1.15	427.99		66.10	--	67.27
13N09775	23-38	BCz	HM	16.70	614.19	18.06	0.37	1074.02	1.24	424.71		68.89	--	73.90
13N09776	38-51	Cr	HM	19.51	648.41	19.46	0.31	1292.74	1.32	253.13		66.89	tr	81.97

---

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
13N09773	0-8	A	HM	63382	16913	26187	20258	10460	294	5381	953	305154	124	3414	134
13N09774	8-23	Btyz	HM	53092	56714	21625	16662	7956	205	4532	722	224818	429	2730	111
13N09775	23-38	BCz	HM	58015	34226	21194	16596	9445	207	5846	661	214403	396	2797	106
13N09776	38-51	Cr	HM	59530	31270	24045	17764	13337	296	7453	754	273295	267	3078	121

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

*** Primary Characterization Data ***

Pedon ID: S2013CO029009

( Delta, Colorado )

Print Date: Dec 7 2025 10:54PM

Sampled As	:	unnnamed		Fine-silty, mixed, active, mesic, shallow Aridic Haplustepts
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  13N96756

---

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

13N09774

8.0-23.0

Btyz

tcly

MT 3

KK 3

MI 2

QZ 2

KK 34

SMEC

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm

MINERAL INTERPRETATION:
KK Kaolinite	MI Mica	MT Montmorillonite	QZ Quartz

RELATIVE PEAK SIZE:

5 Very Large

4 Large

3 Medium

2 Small

1 Very Small

6 No Peaks

INTERPRETATION (BY HORIZON):
SMEC - Smectitic