*** Taxonomy Characterization Data ***

Pedon ID: 78CA013000

( Contra Costa, California )

Print Date: Mar 2 2025 8:59AM

Sampled as on Dec 30, 1977:	Brentwood
Revised to correlated:	Brentwood ; Fine-loamy, smectitic, thermic Typic Xerochrepts

				United States Department of Agriculture
SSL	-	Project	CP79CA067   ERODIBILITY STUDY, CAL-DAVIS	Natural Resources Conservation Service
	-	Site ID	S1978CA013000   Lat: 37° 55' 47.66" north  Long: 121° 41' 35.71" west  MLRA: 17	National Soil Survey Center
	-	Pedon No.	79P0088	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
79P00459	0-16	A1	S	32.3			0.46		21			--
79P00460	16-46	A2	S	35.6			0.39		24	1.51	0.054	tr
79P00461	46-97	B1	S	33.3			0.40		6	1.58	0.052	tr
79P00462	97-127	B2	S	25.7			0.44		12	1.44	0.038	1
79P00463	127-147	C	S	24.4			0.46		17	1.38	0.042	tr

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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	%
				8C1a		6A1c				6E1b	5C1	5C3			8D1			8A1a	5D2
79P00459	0-16	A1	S	7.7		1.40				--	100*	92			0.80			0.81	2
79P00460	16-46	A2	S	7.7		0.73				--	100*	90			0.78			0.69	4
79P00461	46-97	B1	S	7.8		0.45				--	100*	92			0.83			0.72	4
79P00462	97-127	B2	S	7.7		0.29				tr	100*	93			0.95			1.62	5
79P00463	127-147	C	S	8.0		0.32				tr	100*	100			0.96			1.53	4

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

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