*** Taxonomy Characterization Data ***

Pedon ID: S1973CA087003

( Santa Cruz, California )

Print Date: Apr 12 2026 4:38AM

Sampled as on May 30, 1973:	Ben Lomond
Revised to correlated:	BEN LOMOND ; Coarse-loamy, mixed Pachic Ultic Haploxerolls

				United States Department of Agriculture
SSL	-	Project	NL73CA003   ALAMEDA-SNT CRUZ	Natural Resources Conservation Service
	-	Site ID	S1973CA087003     MLRA: 14	National Soil Survey Center
	-	Pedon No.	73C0024	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		8D1			4A1d
73C00163	0-7	A1	S	6.9	1.2		0.97		41			3
73C00164	7-25	A2	S	8.1			0.59		37	1.54	0.006	2
73C00165	25-40	Bt1	S	8.7			0.64		51	1.47	0.007	20
73C00166	40-71	Bt21	S	9.7	1.9		0.59		63	1.44	0.006	30
73C00167	71-87	Bt22	S	9.6			0.64		60	1.52	0.007	31
73C00168	87-132	Bt23	S	9.2			0.71		71	1.76	0.005	49
73C00169	132-140	C	S	4.8			1.13		55	1.78	0.011	12

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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					5C1	5C3		5A3b	8D1		5G1		5D2
73C00163	0-7	A1	S	6.0		2.28					92	82			1.68				3
73C00164	7-25	A2	S	5.7		0.72					84	62			1.01				5
73C00165	25-40	Bt1	S	5.4		0.42					76	88		6.2	0.91	0.71	3		4
73C00166	40-71	Bt21	S	5.2		0.31					87	80		7.2	0.77	0.74	10		5
73C00167	71-87	Bt22	S	5.0		0.26					82	81		7.6	0.86	0.79	11		5
73C00168	87-132	Bt23	S	4.9		0.20					79	78		8.0	0.97	0.87	13		4
73C00169	132-140	C	S	4.9							89	89		7.0	1.48	1.46	10		6

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Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	0.82	(NA)
Clay, carbonate free, Weighted Average	9	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	59	% wt
Volume, >2mm, Weighted Average	27	% vol
Clay, total, Weighted Average	9	% wt
Weighted averages based on control section: 25-75 cm