*** Taxonomy Characterization Data ***

Pedon ID: S1972CA013001

( Contra Costa, California )

Print Date: Apr 28 2024 6:23AM

Sampled as on Apr 8, 1972:	Los Osos
Revised to correlated:	unnamed ; Fine, montmorillonitic, thermic Typic Argixerolls

				United States Department of Agriculture
SSL	-	Project	NL71CA001   CONTRA COSTA ARE	Natural Resources Conservation Service
	-	Site ID	S1972CA013001	National Soil Survey Center
	-	Pedon No.	72C0003	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			8D1			4A1d
72C00015	0-13	A1	S							1.51	0.042	--
72C00015	0-13	A1	GP	34.2
72C00016	13-26	A2	S							1.24	0.061	--
72C00016	13-26	A2	GP	36.3
72C00017	26-56	A3	S							1.39	0.059	--
72C00017	26-56	A3	GP	35.9
72C00018	56-86	Bt	S							1.41	0.064	--
72C00018	56-86	Bt	GP	34.0
72C00019	86-116	C1	S							1.68	0.046	--
72C00019	86-116	C1	GP	31.5
72C00020	116-142	C2	S				0.54			1.66	0.052	--
72C00020	116-142	C2	GP	24.3
72C00021	142-195	C3	S				0.66			2.07	0.022	--
72C00021	142-195	C3	GP	14.6
72C00022	195-236	C4	S				0.65			1.91	0.030	--
72C00022	195-236	C4	GP	21.2

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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									8D1				5D2
72C00015	0-13	A1	S												0.97
72C00015	0-13	A1	GP			1.35													2
72C00016	13-26	A2	S												0.95
72C00016	13-26	A2	GP			1.01													1
72C00017	26-56	A3	S												0.99
72C00017	26-56	A3	GP			0.66													1
72C00018	56-86	Bt	S												1.03
72C00018	56-86	Bt	GP			0.40													2
72C00019	86-116	C1	S												1.15
72C00019	86-116	C1	GP			0.19													2
72C00020	116-142	C2	S												1.47
72C00020	116-142	C2	GP	6.3		0.12													2
72C00021	142-195	C3	S												1.79
72C00021	142-195	C3	GP	7.3		0.08													2
72C00022	195-236	C4	S												1.63
72C00022	195-236	C4	GP	6.8		0.09													2

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Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	1.03	(NA)
Clay, carbonate free, Weighted Average	34	% wt
Volume, >2mm, Weighted Average	0	% vol
Clay, total, Weighted Average	34	% wt
LE, Whole Soil, Summed to 1m	6	cm/m
Weighted averages based on control section: 56-86 cm