*** Taxonomy Characterization Data ***

Pedon ID: 91CA055001

( Napa, California )

Print Date: Feb 16 2025 5:52AM

Sampled as on May 30, 1991:	Undesignated ; Clayey, mixed, thermic Typic Haploxerult
Revised to correlated on Jul 9, 2007:	Bale ; Fine-loamy, mixed, superactive, thermic Cumulic Ultic Haploxerolls

				United States Department of Agriculture
SSL	-	Project	CP91CA178   1992 TOUR	Natural Resources Conservation Service
	-	Site ID	S1991CA055001   Lat: 38° 15' 24.01" north  Long: 122° 22' 17.01" west  MLRA: 14	National Soil Survey Center
	-	Pedon No.	91P0764	Soil Survey Laboratory
	-	General Methods 1B1A, 2A1, 2B		Lincoln, Nebraska 68508-3866

---

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
91P04404	0-7	Ap1	S	20.9	10.9		0.46		35			9
91P04405	7-26	Ap2	S	20.7	10.3		0.44		43	1.55	0.023	16
91P04406	26-47	AB	S	21.7	10.9		0.53		45	1.39	0.020	14
91P04407	47-74	Bw1	S	28.1	14.2		0.55		25	1.19	0.026	6
91P04408	74-106	Bw2	S	25.2	12.2		0.62		21	1.22	0.029	2
91P04409	106-136	Bw3	S	27.5	12.9		0.55		21	1.14	0.089	4
91P04410	136-162	Bq	S	21.9	10.0		0.53		26	1.10	0.042	3

---

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		5C1	5C3	6S4	5A3b	8D1		5G1		5D2
91P04404	0-7	Ap1	S	5.9		2.23	2.04	0.30	0.08		100*	75	27		0.87				1
91P04405	7-26	Ap2	S	5.1		1.62	1.52	0.32	0.08		100*	75	16	29.3	0.92	1.42	tr		2
91P04406	26-47	AB	S	5.5		1.29	1.26	0.38	0.10		98	71	25		0.99				2
91P04407	47-74	Bw1	S	5.5		1.63	1.48	0.49	0.12		88	68	37		0.98				2
91P04408	74-106	Bw2	S	5.5		1.09	1.10	0.77	0.13		90	69	23		1.07				2
91P04409	106-136	Bw3	S	5.8		0.84	0.89	0.71	0.10		90	71	33		0.91				2
91P04410	136-162	Bq	S	6.4		0.50	0.53	0.59	0.08		87	70	19		0.81				3

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

---

Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	1.01	(NA)
Clay, carbonate free, Weighted Average	25	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	29	% wt
Volume, >2mm, Weighted Average	7	% vol
Clay, total, Weighted Average	25	% wt
Weighted averages based on control section: 25-100 cm