*** Primary Characterization Data ***

Pedon ID: S1985MD031011

( Montgomery, Maryland )

Print Date: Apr 24 2024 2:54PM

Sampled as on Oct 30, 1985:	Purdum ; Fine-loamy, mixed, mesic Ochreptic Hapludalfs
Revised to correlated on Nov 16, 2014:	Brinklow ; Fine-loamy, mixed, subactive, mesic Typic Hapludults

				United States Department of Agriculture
SSL	-	Project	CP86MD144   MONTGOMERY COUNTY	Natural Resources Conservation Service
	-	Site ID	S1985MD031011   Lat: 39° 15' 18.00" north  Long: 77° 20' 57.99" west  MLRA: 148	National Soil Survey Center
	-	Pedon No.	86P0384	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
86P02275	E	E	3-15				SIL	SICL
86P02276	EB	EB	15-25				SIL	SICL
86P02277	Bt1	Bt1	25-43				SIL	CL
86P02278	Bt2	Bt2	43-64				SIL	CL
86P02279	Cr	CR	64-102				SIL	CL

---

Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	0.2	(NA)
Clay, carbonate free, Weighted Average	34	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	41	% wt
Volume, >2mm, Weighted Average	12	% vol
Clay, total, Weighted Average	34	% wt
LE, Whole Soil, Summed to 1m	0	cm/m
Weighted averages based on control section: 25-64 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	3A1a1a	3A1a1a	3A1a1a	3A1a1a	3A1a1a	3B1	3B1	3B1
86P02275	3-15	E	S	sicl	28.7	55.0	16.3	5.0		44.4	10.6	3.3	3.4	2.8	2.7	4.1	7	14	1	32	22
86P02276	15-25	EB	S	sicl	38.2	43.2	18.6	8.2		36.1	7.1	3.5	2.2	2.7	3.9	6.3	11	11	2	35	24
86P02277	25-43	Bt1	S	cl	37.9	36.4	25.7	10.0		29.8	6.6	4.4	5.1	5.0	6.3	4.9	7	10	4	38	21
86P02278	43-64	Bt2	S	cl	31.3	34.6	34.1	7.3		28.1	6.5	5.6	6.3	6.5	8.0	7.7	7	12	1	43	20
86P02279	64-102	Cr	S	cl	29.2	36.6	34.2			29.5	7.1	6.3	7.1	6.5	7.9	6.4	9	12	4	46	25

*** Primary Characterization Data ***

Pedon ID: S1985MD031011

( Montgomery, Maryland )

Print Date: Apr 24 2024 2:54PM

Sampled As	:	Purdum		Fine-loamy, mixed, mesic Ochreptic Hapludalfs
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  86P0384

---

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	%
				4A1d	4A1h				4B1c	3C2a1a		3D1		4C1		8D1	8D1
86P02275	3-15	E	S	1.39	1.44	0.010			24.2	9.4		1.009		0.18		0.27	0.33
86P02276	15-25	EB	S	1.47	1.53	0.011			22.8	12.8		1.011		0.13		0.23	0.34
86P02277	25-43	Bt1	S	1.43	1.52	0.018			23.7	14.6		1.010		0.11		0.24	0.39
86P02278	43-64	Bt2	S	1.47	1.56	0.017			24.4	12.5		1.008		0.15		0.17	0.40
86P02279	64-102	Cr	S	1.63	1.71	0.013			22.1	10.8		1.007		0.15		0.26	0.37

---

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 - - - - - - - - - - - - - - - - - - - - - -)
				4F1	4F
86P02275	3-15	E	S	43	15
86P02277	25-43	Bt1	S	49	21

---

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 - - - - -)
				6A2d				6A1c		6C2b	6G7a
86P02275	3-15	E	S	1.64				1.68		3.0	0.4
86P02276	15-25	EB	S					0.75		3.5	0.5
86P02277	25-43	Bt1	S					0.43		4.1	0.5
86P02278	43-64	Bt2	S					0.20		4.2	0.5
86P02279	64-102	Cr	S					0.11		4.3	0.4

*** Primary Characterization Data ***

Pedon ID: S1985MD031011

( Montgomery, Maryland )

Print Date: Apr 24 2024 2:54PM

Sampled As	:	Purdum		Fine-loamy, mixed, mesic Ochreptic Hapludalfs
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  86P0384

---

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 - - -)			(- - - - - - - - % - - - - - - - -)
				6N2e	6O2d	6P2b	6Q2b		6H5a	6G9a		5A3a	5A8b	5A3b	5G1	5C3	5C1
86P02275	3-15	E	S	0.1	0.1	0.1	0.1	0.4	9.8	3.2		10.2	7.8	3.6	89	4	5
86P02276	15-25	EB	S	0.1	0.1	tr	0.1	0.3	8.7	3.7		9.0	8.7	4.0	93	3	3
86P02277	25-43	Bt1	S	0.1	0.1	tr	0.1	0.3	8.4	3.7		8.7	9.1	4.0	93	3	3
86P02278	43-64	Bt2	S	0.1	0.1	tr	0.1	0.3	7.0	2.6		7.3	5.4	2.9	90	4	6
86P02279	64-102	Cr	S	0.1	0.4	tr	0.1	0.6	5.0	1.9		5.6	7.6	2.5	76	11	8

---

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 - -)

%

86P02275

3-15

E

S

1

86P02276

15-25

EB

S

--

86P02277

25-43

Bt1

S

--

86P02278

43-64

Bt2

S

--

86P02279

64-102

Cr

S

--

---

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

86P02275

3-15

E

S

3.9

4.1

86P02276

15-25

EB

S

3.9

4.3

86P02277

25-43

Bt1

S

4.0

4.3

86P02278

43-64

Bt2

S

4.0

4.4

86P02279

64-102

Cr

S

4.2

4.8

*** Primary Characterization Data ***

Pedon ID: S1985MD031011

( Montgomery, Maryland )

Print Date: Apr 24 2024 2:54PM

Sampled As	:	Purdum		Fine-loamy, mixed, mesic Ochreptic Hapludalfs
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  86P0384

---

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

7A2i

7A4a

&nbsp;

7C3

&nbsp;

tion

Layer

(cm)

Horz

ion

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

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

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

mg g-1

86P02277

25.0-43.0

Bt1

tcly

MI 4

KK 3

GI 2

VR 2

GE 2

KK 7

GI tr

&nbsp;

&nbsp;

&nbsp;

&nbsp;

11.9

&nbsp;

&nbsp;

2.5

&nbsp;

&nbsp;

&nbsp;

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm	&nbsp;	&nbsp;	&nbsp;	&nbsp;

MINERAL INTERPRETATION:
GE Goethite	GI Gibbsite	KK Kaolinite	MI Mica	VR Vermiculite

RELATIVE PEAK SIZE:

5 Very Large

4 Large

3 Medium

2 Small

1 Very Small

6 No Peaks

*** Primary Characterization Data ***

Pedon ID: S1985MD031011

( Montgomery, Maryland )

Print Date: Apr 24 2024 2:54PM

Sampled As	:	Purdum		Fine-loamy, mixed, mesic Ochreptic Hapludalfs
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  86P0384

---

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

86P02277

25.0-43.0

Bt1

vfs

 

 

 

 

 

 

 

 

 

22

SR 73

KK 16

FP 5

QZ 4

TM 1

MS 1

 

 

 

 

 

 

 

 

 

 

 

OP 1

BT tr

 

 

 

 

 

FRACTION INTERPRETATION:
vfs - Very Fine Sand 0.05-0.1 mm	 	 	 	 

MINERAL INTERPRETATION:
BT Biotite	FP Plagioclase Feldspar	KK Kaolinite	MS Muscovite	OP Opaques
QZ Quartz	SR Sericite	TM Tourmaline	 	 

*** Primary Characterization Data ***

Pedon ID: S1985MD031011

( Montgomery, Maryland )

Print Date: Apr 24 2024 2:54PM

Sampled As	:	Purdum		Fine-loamy, mixed, mesic Ochreptic Hapludalfs
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  86P0384

---

Fine Earth Mineralogy (<2.0 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

&nbsp;

7A4a

&nbsp;

7C3

&nbsp;

tion

Layer

(cm)

Horz

ion

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

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

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

mg g-1

86P02277

25.0-43.0

Bt1

feth

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

KK 8

GI tr

&nbsp;

&nbsp;

&nbsp;

&nbsp;

8.3

&nbsp;

&nbsp;

3.3

&nbsp;

&nbsp;

&nbsp;

86P02279

64.0-102.0

Cr

feth

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

KK 11

GI tr

&nbsp;

&nbsp;

&nbsp;

&nbsp;

9.3

&nbsp;

&nbsp;

3.7

&nbsp;

&nbsp;

&nbsp;

FRACTION INTERPRETATION:
feth - Fine Earth <2 mm	&nbsp;	&nbsp;	&nbsp;	&nbsp;

MINERAL INTERPRETATION:
GI Gibbsite	KK Kaolinite