*** Taxonomy Characterization Data ***

Pedon ID: 91CO123004

( Weld, Colorado )

Print Date: Dec 17 2024 10:22PM

Sampled as on Jun 29, 1991:	Arvada ; Fine, montmorillonitic Ustollic Natrargids
Revised to correlated on Sep 1, 1992:	(unnamed) ; Fine, smectitic, mesic Ustollic Natrargid

				United States Department of Agriculture
SSL	-	Project	CP91CO201   WELD	Natural Resources Conservation Service
	-	Site ID	S1991CO123004   Lat: 40° 49' 44.00" north  Long: 104° 44' 42.01" west  MLRA: 67	National Soil Survey Center
	-	Pedon No.	91P0868	Soil Survey Laboratory
	-	General Methods 1B1A, 2A1, 2B		Lincoln, Nebraska 68508-3866

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Taxonomy Tier 1				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-
					Fine	CaCO3	1500		.1-75	Bulk	Cole	Vol	Resist
				Clay	Clay	Clay	kPa	Clay	mm	Den	Whole	% of	Min
	Depth			<.002	<.0002	<.002	/Clay	Est	Frac	33 kPa	Soil	Whole	%
Layer	(cm)	Horz	Prep	(---------% of <2 mm-------)				(-------- % --------)		g cm-3	cm cm-1
				3A1a1a	3A1a1a	3A1a1a	8D1			4A1d			7B1a2
91P05255	0-3	E	S	20.8	15.3		0.41		56
91P05256	3-8	Ey	S	23.1	16.1		0.43		54	1.38	0.028
91P05257	8-24	Btny1	S	39.1	23.1		0.49		37	1.42	0.038		75
91P05258	24-51	Btny2	S	37.2	20.6	1.6	0.53		28	1.25	0.072		69
91P05259	51-66	Btny3	S	33.1	19.5	0.6	0.56		23	1.29	0.081
91P05260	66-82	Btny4	S	30.6	17.5	1.3	0.65		27	1.38	0.068
91P05261	82-107	Btkny1	S	24.8	14.4	0.6	0.48		38	1.33	0.061
91P05262	107-137	Btkny2	S	25.1	13.6	1.3	0.47		37	1.36	0.062
91P05263	137-160	Bkny5	S	20.2	12.2	0.9	0.50		44	1.35	0.076
91P05264	160-187	Bnyg	S	15.2	9.8	0.3	0.49		59	1.55	0.015
91P05265	187-217	Ayb	S	32.8	18.2	5.6	0.51		36	1.45	0.073
91P05266	0-12	A	S	23.4			0.50		53
91P05267	24-51	Bt	S	35.8		0.6	0.54		33

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Taxonomy Tier 2				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-	-15-	-16-
				pH	pH	Org	Tot	Al+½ Fe		CO3 as	(--- Base Sat ---)		NZ	ECEC	CEC7	ECEC	Al
	Depth			H2O	NaF	C	C	Oxal	ODOE	CaCO3	NH4	Bases	P Ret	cmol(+)	/Clay	/Clay	Sat	E C	ESP
Layer	(cm)	Horz	Prep			(------------------------------------------ % --------------------------------------------)								kg -1			%	dS m-1	%
				4C1a2a		6A1c	6A2d		8J	6E1g	5C1	5C3			8D1			8A3a	5D2
91P05255	0-3	E	S	7.3		0.61	0.55	0.07	0.01	--	100*	92			0.75			7.26	32
91P05256	3-8	Ey	S	8.1		0.54	0.50	0.07	0.01	tr	100*	95			0.77			18.50	66
91P05257	8-24	Btny1	S	8.2		0.54	0.58	0.10	0.01	tr	100*	99			0.68			17.30	92
91P05258	24-51	Btny2	S	8.6		0.38	0.52	0.09	0.01	1	100*	100			0.72			16.90	65
91P05259	51-66	Btny3	S	8.8		0.25	0.41	0.08	0.02	2	100*	100			0.79			15.10	75
91P05260	66-82	Btny4	S	8.9		0.20	0.46	0.07	0.01	4	100*	100			0.78			15.70	67
91P05261	82-107	Btkny1	S	8.9		0.13	0.35	0.05	0.01	2	100*	100			0.78			16.10	56
91P05262	107-137	Btkny2	S	8.9		0.14	0.44	0.05	0.01	3	100*	100			0.72			15.50	59
91P05263	137-160	Bkny5	S	8.8		0.13	0.44	0.05	0.01	2	100*	100			0.77			14.70	67
91P05264	160-187	Bnyg	S	8.8		0.07	0.16	0.04	0.01	1	100*	100			0.77			13.60	51
91P05265	187-217	Ayb	S	8.9		0.31	1.58	0.06	0.01	9	100*	100			0.57			11.50	60
91P05266	0-12	A	S	8.1		0.80	0.71			--	100*	100			0.74			4.62	29
91P05267	24-51	Bt	S	8.2		0.31	0.50			1	100*	100			0.71			4.64	19

^*Extractable Ca may contain Ca from calcium carbonate or gypsum.

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Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	0.74	(NA)
Clay, carbonate free, Weighted Average	36	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	30	% wt
Volume, >2mm, Weighted Average	0	% vol
Clay, total, Weighted Average	37	% wt
Weighted averages based on control section: 8-58 cm