*** Primary Characterization Data ***

Pedon ID: S2012CA055002

( Napa, California )

Print Date: Apr 12 2026 5:01AM

Sampled as on Feb 11, 2013:	Bressa ; Fine-loamy, mixed, active, thermic Typic Haploxeralfs
Revised to :

				United States Department of Agriculture
SSL	-	Project	C2015USCA057   MLRA 15 Bay Delta Soil Climate Monitoring	Natural Resources Conservation Service
	-	Site ID	S2012CA055002   Lat: 38° 36' 50.70" north  Long: 122° 20' 58.50" west  MLRA: 15	National Soil Survey Center
	-	Pedon No.	15N0610	Kellogg Soil Survey Laboratory
	-	General Methods 1B1A, 2A1, 2B		Lincoln, Nebraska 68508-3866

---

Layer	Horizon	Orig Hzn	Depth (cm)	Field Label 1	Field Label 2	Field Label 3	Field Texture	Lab Texture
15N03448	A	A	0-22	S2012CA055002-1			SICL	CL
15N03449	2Ab	2Ab	22-41	S2012CA055002-2			SIL	CL
15N03450	2Bt1	2Bt1	41-70	S2012CA055002-3			SICL	C
15N03451	2Bt2	2Bt2	70-101	S2012CA055002-4			SICL	C
15N03452	3C	3C	101-200	S2012CA055002-5			CL	SICL

---

Pedon Calculations
Calculation Name	Result	Units of Measure
Weighted Particles, 0.1-75mm, 75 mm Base	25	% wt
Volume, >2mm, Weighted Average	6	% vol
Clay, total, Weighted Average	52	% wt
Clay, carbonate free, Weighted Average	52	% wt
CEC Activity, CEC7/Clay, Weighted Average, CECd, Set 4	0.62	(NA)
LE, Whole Soil, Summed to 1m	6	cm/m
Weighted averages based on control section: 41-91 cm

---

PSDA  &  Rock Fragments				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-	-15-	-16-	-17-	-18-
					(- - - - - Total - - - - - -)			(- - Clay - - -)		(- - - - Silt - - - - -)		(- - - - - - - - - - - - Sand - - - - - - - - - - - -)					( Rock Fragments   (mm) )
				Lab	Clay	Silt	Sand	Fine	CO3	Fine	Coarse	VF	F	M	C	VC	(- - - - - - - - Weight - - - - - - - -)				>2 mm
				Text-	<	.002	.05	<	<	.002	.02	.05	.10	.25	.5	1	2	5	20	.1-	wt %
	Depth			ure	.002	-.05	-2	.0002	.002	-.02	-.05	-.10	-.25	-.50	-1	-2	-5	-20	-75	75	whole
Layer	(cm)	Horz	Prep		(- - - - - - - - - - - - - - - - - - - - - - - - - - % of <2mm Mineral Soil - - - - - - - - - - - - - - - - - - - - - - - - - - -)												(- - - - - - - % of <75mm - - - - - -)				soil
					3A1a1a					3A1a1a		3A1a1a	3A1a1a	3A1a1a	3A1a1a	3A1a1a
15N03448	0-22	A	S	cl	35.1	33.4	31.5			24.9	8.5	9.0	12.8	6.7	1.9	1.1	2	1	2	26	5
15N03449	22-41	2Ab	S	cl	28.1	35.5	36.4			26.5	9.0	10.1	16.0	8.8	0.9	0.6	2	1	--	29	3
15N03450	41-70	2Bt1	S	c	54.9	21.0	24.1			17.1	3.9	6.0	9.8	4.5	2.6	1.2	tr	1	--	19	1
15N03451	70-101	2Bt2	S	c	47.1	31.8	21.1			26.6	5.2	5.6	7.2	4.1	3.5	0.7	10	12	--	34	22
15N03452	101-200	3C	S	sicl	37.7	52.1	10.2			44.6	7.5	1.0	1.0	5.4	0.9	1.9	8	37	27	75	72

*** Primary Characterization Data ***

Pedon ID: S2012CA055002

( Napa, California )

Print Date: Apr 12 2026 5:01AM

Sampled As	:	Bressa		Fine-loamy, mixed, active, thermic Typic Haploxeralfs
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  15N0610

---

Bulk Density  &  Moisture				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-
				(Bulk Density)		Cole	(- - - - - - - - - - - Water Content - - - - - - - - - - -)					( Air Dry-Oven Dry )		WRD	Aggst
				33	Oven	Whole	6	10	33	1500	1500 kPa	(- - - - Ratio - - - -)		Whole	Stabl	(- - Ratio/Clay - -)
	Depth			kPa	Dry	Soil	kPa	kPa	kPa	kPa	Moist		Corrected	Soil	2-0.5mm	CEC7	1500 kPa
Layer	(cm)	Horz	Prep	(- - - g cm-3 - - -)			(- - - - - - - - - - - - pct of < 2mm - - - - - - - - - - - -)							cm3 cm-3	%
				DbWR1	DbWR1				DbWR1	3C2a1a		3D1
15N03448	0-22	A	S	1.50	1.72	0.045			21.4	12.9		1.043		0.12		0.64	0.37
15N03449	22-41	2Ab	S	1.58	1.74	0.032			18.3	11.2		1.032		0.11		0.67	0.40
15N03450	41-70	2Bt1	S	1.39	1.76	0.081			29.6	20.2		1.068		0.13		0.59	0.37
15N03451	70-101	2Bt2	S	1.48	1.85	0.066			26.1	17.4		1.067		0.11		0.66	0.37
15N03452	101-200	3C	S							14.3		1.056				0.69	0.38

---

Water Content

-1-

-2-

-3-

-4-

-5-

-6-

-7-

-8-

-9-

-10-

-11-

-12-

-13-

(- - Atterberg - -)

(- - - - - Bulk Density - - - - -)

(- - - - - - - - - - - - - - - - - - - - - - - Water Content - - - - - - - - - - - - - - - - - - - - -)

(- - - Limits - - -)

Field

Recon

Recon

Field

Recon

(- - - - - - - - - - - - - - Sieved Samples - - - - - - - - - - - - -)

LL

PI

33

Oven

33

6

10

33

100

200

500

Depth

kPa

Dry

kPa

kPa

kPa

kPa

kPa

kPa

kPa

Layer

(cm)

Horz

Prep

pct <0.4mm

(- - - - - - - - g cm-3 - - - - - - -)

(- - - - - - - - - - - - - - - - - - - - - - - % of < 2mm - - - - - - - - - - - - - - - - - - - - - -)

3C1e1a

15N03448

0-22

A

S

18.2

15N03449

22-41

2Ab

S

16.4

15N03450

41-70

2Bt1

S

25.7

15N03451

70-101

2Bt2

S

22.0

15N03452

101-200

3C

S

16.6

---

Carbon  &  Extractions				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-	-15-	-16-	-17-	-18-	-19-
				(- - - - - Total - - - - -)			Est	OC	C/N	(- - - Dith-Cit Ext - - -)			(- - - - - - Ammonium Oxalate Extraction - - - - - -)						(- - - Na Pyro-Phosphate - - -)
	Depth			C	N	S	OC	(WB)	Ratio	Fe	Al	Mn	Al+½Fe	ODOE	Fe	Al	Si	Mn	C	Fe	Al	Mn
Layer	(cm)	Horz	Prep	(- - - - - - - - - - % of <2 mm - - - - - - - - - -)						(- - - - - - - - - - - - - - - - - - - % of < 2mm - - - - - - - - - - - - - - - - -)								mg kg-1	(- - - - - - % of < 2mm - - - - -)
				4H2a	4H2a	4H2a
15N03448	0-22	A	S	0.82	0.12	0.01	0.8		7
15N03449	22-41	2Ab	S	0.81	0.08	tr	0.8		10
15N03450	41-70	2Bt1	S	0.52	0.09	0.01	0.5		6
15N03451	70-101	2Bt2	S	0.31	0.06	0.02	0.3		5
15N03452	101-200	3C	S	0.29	0.06	0.01	0.3		5

*** Primary Characterization Data ***

Pedon ID: S2012CA055002

( Napa, California )

Print Date: Apr 12 2026 5:01AM

Sampled As	:	Bressa		Fine-loamy, mixed, active, thermic Typic Haploxeralfs
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  15N0610

---

CEC  &  Bases				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-
				(- - - - - - NH4OAC Extractable Bases - - - - -)								CEC8	CEC7	ECEC		(- - - - Base - - - -)
								Sum	Acid-	Extr	KCl	Sum	NH4	Bases	Al	(- Saturation -)
	Depth			Ca	Mg	Na	K	Bases	ity	Al	Mn	Cats	OAC	+Al	Sat	Sum	NH4OAC
Layer	(cm)	Horz	Prep	(- - - - - - - - - - - - - - - - - cmol(+) kg-1 - - - - - - - - - - - - - - - - - - -)							mg kg-1	(- - - - cmol(+) kg-1 - - -)			(- - - - - - - - % - - - - - - - -)
				4B1a1a	4B1a1a	4B1a1a	4B1a1a		4B2b1a1				4B1a1a
15N03448	0-22	A	S	14.8*	11.4	0.1	0.4	26.7	5.2			31.9	22.4			84	100
15N03449	22-41	2Ab	S	8.7	8.6	0.1	0.3	17.7	7.3			25.0	18.9			71	94
15N03450	41-70	2Bt1	S	20.4*	15.4	0.7	0.4	36.9	10.3			47.2	32.3			78	100
15N03451	70-101	2Bt2	S	22.4*	15.0	0.6	0.3	38.3	9.1			47.4	30.9			81	100
15N03452	101-200	3C	S	21.2*	11.9	0.3	0.2	33.6	6.5			40.1	26.0			84	100

^*Extractable Ca may contain Ca from calcium carbonate or gypsum., CEC7 base saturation set to 100.

---

Salt				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-	-15-	-16-	-17-	-18-	-19-	-20-
				(- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Water Extracted From Saturated Paste - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -)																	1:2
																			Total	Elec	Elec	Exch
	Depth			Ca	Mg	Na	K	CO3	HCO3	F	Cl	PO4	Br	OAC	SO4	NO2	NO3	H2O	Salts	Cond	Cond	Na	SAR
Layer	(cm)	Horz	Prep	(- - - - - mmol(+) L-1 - - - - -)				(- - - - - - - - - - - - - - - - - - - - - - mmol(-) L-1 - - - - - - - - - - - - - - - - - - - -)										(- - - - % - - - -)		(- - dS m-1 - -)		%
				4F2	4F2	4F2	4F2	4F2	4F2	4F2	4F2	4F2	4F2	4F2	4F2	4F2	4F2	4F2		4F2	4F1a1a1
15N03448	0-22	A	S																		0.21	tr
15N03449	22-41	2Ab	S																		0.15	tr
15N03450	41-70	2Bt1	S	2.2	1.5	0.6	--	--	--	--	0.8	--	--	--	3.5	--	0.2	68.1	tr	0.57	0.27	2	tr
15N03451	70-101	2Bt2	S	2.4	1.4	1.0	tr	--	tr	--	0.6	--	--	--	3.3	tr	0.1	58.5	--	0.55	0.23	2	1
15N03452	101-200	3C	S	1.7	0.6	--	--	--	tr	--	0.7	--	--	--	1.6	tr	--	43.2	--	0.33	1.13	1	--

---

pH  &  Carbonates				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-
				(- - - - - - - - - - - - - - - - - - pH - - - - - - - - - - - - - - - - -)						(- - Carbonate - -)		(- - Gypsum - - -)
					CaCl2					As CaCO3		As CaSO4*2H2O		Resist
	Depth				0.01M	H2O	Sat			<2mm	<20mm	<2mm	<20mm	ohms
Layer	(cm)	Horz	Prep	KCl	1:2	1:1	Paste	Oxid	NaF	(- - - - - - - - - - - - % - - - - - - - - - - -)				cm-1
					4C1a2a	4C1a2a	4F2			4E1a1a1a1		4E2a1a1a1
15N03448	0-22	A	S		6.8	7.2				--
15N03449	22-41	2Ab	S		5.6	6.2				--
15N03450	41-70	2Bt1	S		5.3	5.8	5.3			--
15N03451	70-101	2Bt2	S		6.1	6.5	6.2			--
15N03452	101-200	3C	S		6.6	7.2	6.8			--		--

*** Primary Characterization Data ***

Pedon ID: S2012CA055002

( Napa, California )

Print Date: Apr 12 2026 5:01AM

Sampled As	:	Bressa		Fine-loamy, mixed, active, thermic Typic Haploxeralfs
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  15N0610

---

Phosphorous

-1-

-2-

-3-

-4-

-5-

-6-

-7-

-8-

-9-

-10-

-11-

-12-

(- - - - - - - - - - - - - - - - - - - - - - - Phosphorous - - - - - - - - - - - - - - - - - - - - -)

KCl

Melanic

NZ

Acid

Anion Exch Resin

Bray

Bray

Olsen

H2O

Citric

Mehlich

Extr

Depth

Index

Oxal

Available

Capacity

1

2

Acid

III

NO3

Layer

(cm)

Horz

Prep

%

(- - - - - - - - - - - - - - - - - - - - - - - - - - - mg kg-1 - - - - - - - - - - - - - - - - - - - -)

4D5a1

15N03448

0-22

A

S

10.9

15N03449

22-41

2Ab

S

11.7

15N03450

41-70

2Bt1

S

1.1

15N03451

70-101

2Bt2

S

1.3

15N03452

101-200

3C

S

4.5

---

Trace Elements Tier 1				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-
	Depth			Ag	As	Ba	Be	Cd	Co	Cr	Cu	Mn	Mo		Hg
Layer	(cm)	Horz	Prep	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg		ug/kg
				4H1a	4H1a	4H1a	4H1a	4H1a	4H1a	4H1a	4H1a	4H1a	4H1a		4H1a
15N03448	0-22	A	HM	0.04	13.45	373.13	0.85	0.08	14.84	51.85	50.35	618.17	0.83		82
15N03449	22-41	2Ab	HM	0.04	13.73	376.91	0.87	0.06	14.66	49.34	52.81	596.66	0.83		67
15N03450	41-70	2Bt1	HM	0.06	13.45	529.36	1.20	0.05	13.12	58.54	52.18	505.52	0.63		118
15N03451	70-101	2Bt2	HM	0.05	11.11	554.77	1.28	0.06	11.43	66.10	55.19	356.86	0.53		118
15N03452	101-200	3C	HM	0.05	7.17	1199.83	1.34	0.36	20.37	67.74	65.79	566.90	1.76		161

---

Trace Elements Tier 2				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-
	Depth			Ni	P	Pb	Sb	Se	Sn	Sr	Tl	V	W	Zn
Layer	(cm)	Horz	Prep	mg/kg	mg/kg	mg/kg	mg/kg	ug/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg	mg/kg
				4H1a	4H1a	4H1a	4H1a	4H1a	4H1a	4H1a		4H1a	4H1a	4H1a
15N03448	0-22	A	HM	39.87	562.38	10.31	0.45	426.19	0.90	24.22		160.72	--	102.64
15N03449	22-41	2Ab	HM	37.14	575.87	8.82	0.45	504.70	0.88	23.71		168.32	0.01	94.68
15N03450	41-70	2Bt1	HM	31.50	353.29	9.17	0.42	524.74	1.29	37.65		248.47	--	85.19
15N03451	70-101	2Bt2	HM	35.66	344.09	9.28	0.32	342.53	1.37	44.82		233.46	--	98.71
15N03452	101-200	3C	HM	56.45	1007.63	13.80	0.56	483.04	1.38	59.09		184.57	--	136.00

*** Primary Characterization Data ***

Pedon ID: S2012CA055002

( Napa, California )

Print Date: Apr 12 2026 5:01AM

Sampled As	:	Bressa		Fine-loamy, mixed, active, thermic Typic Haploxeralfs
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  15N0610

---

Clay Mineralogy (<.002 mm)

-1-

-2-

-3-

-4-

-5-

-6-

-7-

-8-

-9-

-10-

-11-

-12-

-13-

-14-

-15-

-16-

-17-

-18-

X-Ray

Thermal

Elemental

EGME

Inter

SiO2

Al2O3

Fe2O3

MgO

CaO

K2O

Na2O

Retn

preta

Depth

Fract

7A1b1

7A2a

tion

Layer

(cm)

Horz

ion

( - - - - - - - - - peak size - - - - - - - - - - )

(- - - - - - - - - % - - - - - - - - - -)

(- - - - - - - - - - - - - - - - - - - - - % - - - - - - - - - - - - - - - - - - - - -)

mg g-1

15N03448

0.0-22.0

A

tcly

KK 2

VR 2

QZ 2

KK 37

CMIX

15N03449

22.0-41.0

2Ab

tcly

KK 2

VR 1

KK 44

CMIX

15N03450

41.0-70.0

2Bt1

tcly

VR 3

KK 2

GI 1

VERM

15N03451

70.0-101.0

2Bt2

tcly

VR 3

KK 2

VERM

15N03452

101.0-200.0

3C

tcly

VR 3

VM 2

FK 2

MI 2

KK 1

VERM

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm

MINERAL INTERPRETATION:
FK Potassium Feldspar	GI Gibbsite	KK Kaolinite	MI Mica	QZ Quartz
VM Vermiculite-Mica	VR Vermiculite

RELATIVE PEAK SIZE:

5 Very Large

4 Large

3 Medium

2 Small

1 Very Small

6 No Peaks

INTERPRETATION (BY HORIZON):
CMIX - Mixed Clay	VERM - Vermiculitic

*** Primary Characterization Data ***

Pedon ID: S2012CA055002

( Napa, California )

Print Date: Apr 12 2026 5:01AM

Sampled As	:	Bressa		Fine-loamy, mixed, active, thermic Typic Haploxeralfs
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  15N0610

---

Sand - Silt Mineralogy (2.0-0.002 mm)

-1-

-2-

-3-

-4-

-5-

-6-

-7-

-8-

-9-

-10-

-11-

-12-

-13-

-14-

-15-

-16-

-17-

-18-

X-Ray

Thermal

Optical

EGME

Inter

Tot Re

Grain Count

Retn

preta

Depth

Fract

7B1a2

tion

Layer

(cm)

Horz

ion

( - - - - - - - - peak size - - - - - - - - - )

(- - - - - - - - % - - - - - - - - - -)

(- - - - - - - - - - - - - - - - - - - - % - - - - - - - - - - - - - - - - - -)

mg g-1

15N03448

0.0-22.0

A

fs

90

QZ 51

FE 18

QI 13

CD 8

FK 8

BT 2

SMIX

PO tr

MS tr

15N03449

22.0-41.0

2Ab

fs

91

QZ 58

FE 15

QI 12

FK 7

CD 6

BT 2

SILI

GN tr

MS tr

PO tr

15N03450

41.0-70.0

2Bt1

fs

90

QZ 47

FE 25

QI 13

FK 8

CD 5

MS 1

SMIX

BT 1

PO tr

15N03451

70.0-101.0

2Bt2

fs

95

FE 44

QZ 35

QI 14

FK 4

BT 2

CD 2

SILI

HN tr

PO tr

MS tr

15N03452

101.0-200.0

3C

csi

71

QZ 53

BT 14

CD 12

FK 8

FE 6

MS 4

SMIX

FP 1

HN 1

CL 1

BY tr

GS tr

FZ tr

PO tr

PR tr

FRACTION INTERPRETATION:
csi - Coarse Silt 0.02-0.05 mm	fs - Fine Sand 0.1-0.25 mm

MINERAL INTERPRETATION:
BT Biotite	BY Beryl	CD Chert (Chalcedony	CL Chlorite	FE Iron Oxides (Goethite

*** Primary Characterization Data ***

Pedon ID: S2012CA055002

( Napa, California )

Print Date: Apr 12 2026 5:01AM

Sampled As	:	Bressa		Fine-loamy, mixed, active, thermic Typic Haploxeralfs
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  15N0610

---

MINERAL INTERPRETATION:
FK Potassium Feldspar	FP Plagioclase Feldspar	FZ Feldspathoids	GN Garnet	GS Glass
HN Hornblende	MS Muscovite	PO Plant Opal	PR Pyroxene	QI Iron Oxide-Coated Quartz
QZ Quartz

INTERPRETATION (BY HORIZON):
SILI - Siliceous	SMIX - Mixed Sand