*** Taxonomy Characterization Data ***

Pedon ID: S1957CA081001

( San Mateo, California )

Print Date: Apr 19 2026 12:01PM

Sampled as on Apr 29, 1957:	Hugo
Revised to correlated:	Hugo ; Coarse-loamy, mixed, superactive, mesic Typic Xerochrepts

				United States Department of Agriculture
SSL	-	Project	NL40001   SSIR SAMPLES	Soil Conservation Service
	-	Site ID	S1957CA081001   Lat: 37° 24' 41.00" north  Long: 122° 19' 45.01" west  MLRA: 4B	Riverside Soil Survey Laboratory
	-	Pedon No.	40A2989	Soil Laboratory
	-	General Methods 1B1A, 2A1, 2B		Riverside, California

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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

40A23522

0-20

A

S

5.1

0.75

56

--

40A23523

20-66

B1

S

5.0

0.74

57

1

40A23524

66-102

B2

S

5.4

0.76

59

50

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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

%

6A1a

8A1a

40A23522

0-20

A

S

0.73

48

0.20

40A23523

20-66

B1

S

0.22

64

0.10

40A23524

66-102

B2

S

0.16

60

0.10

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Pedon Calculations
Calculation Name	Result	Units of Measure
Clay, carbonate free, Weighted Average	5	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	58	% wt
Volume, >2mm, Weighted Average	23	% vol
Clay, total, Weighted Average	5	% wt
Weighted averages based on control section: 25-100 cm