IDENTIFIERS

Current Taxon Name (Soil Name): Unicornpeak

OSD

Series Extent

User Site ID: S2011WA041501

User Pedon ID: S2011WA041501

Vegetation Plot ID: S2011WA041501

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - SSL

Lab Pedon # - 13N0365

NCSS Pedon Lab Data NASIS Record ID - 70647

Print Date: 1/30/2025

LOCATION

Location In Web Soil Survey

AOI is roughly a square mile and pedon is marked in the center.

Location in SoilWeb

Location in Google Maps

Std. Latitude: 46.7828330

Std. Longitude: -121.7477290

Datum: WGS84

Township: 15 N

Range: 8 E

Section: 13

PLSS Details: 450m north and 200m east of SW corner

Location Description: Paradise SnoTel site, near Paradise Visitor Center water treatment facility, Mount Rainier National Park, Washington. #21C35S

State: Washington

County: WA041—Lewis

MLRA: 3—Olympic and Cascade Mountains

Non-MLRA Soil Survey Area: WA754—Mount Rainier National Park, Washington

7.5 Minute USGS Quad: 46121-G6—Mt Rainier East, Washington

PEDON

Describers Name: Toby Rodgers

Current Taxonomic Class: Medial-skeletal, amorphic Aquandic Haplocryods

Current Taxon Kind: taxadjunct

Pedon Type: taxadjunct to the series

Pedon Purpose: laboratory sampling site

Pedon Record Orgin: NASIS

Correlated Information:

Soil Name - Unicornpeak

PSC - 28 to 103 cm.

Classificaton Date - 12/4/2014

Classifier - Toby Rodgers

Soil Taxonomic Edition - twelfth edition

Moisture Class - udic

Moisture Subclass - aquic

Sampled As Information:

Soil Name - Andic Humicryod

Taxonomic Class - Medial-skeletal, amorphic Andic Humicryods

Taxon Kind - taxon above family

PSC - 28 to 103 cm.

Classificaton Date - 11/16/2012

Classifier - Toby Rodgers

Soil Taxonomic Edition - eleventh edition

Moisture Class - udic

Moisture SUBClass - udic

Dynamic Soil Properties:

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: volcanic ash over till and andesite

Landscape: shield volcano

Landform: depression on lava flow

Geomorphic Component Mountains: mountaintop

Hill Slope Profile: toeslope

Slope Position: upper third

Slope Complexity: complex

Slope Shape Across: concave

Slope Shape Down: concave

Drainage Class: well

Flooding: none flooding

Ponding: none ponding

Bedrock: indurated moderate weathered andesite at 110cm with 10 to <45

Surface Fragments: 0.05 percent nonflat subangular indurated 75- to 250-millimeter andesite,

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 8/30/2011 (actual site observation date)

Surface Cover Properties:

Site Obs. Cover Kind 1 - tree cover

Site Obs. Cover Kind 2 - native shrubs

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Current Weather - overcast

Current Air Temp - 14

Vegetation Plot Plants
Plant Symbol	Scientific Name	National Vernacular Name	Plant Type Group	Canopy Cover %	Vegetation Stata Level
ABLA TSME LUAR2 VEVI VAOV CANI2	Abies lasiocarpa Tsuga mertensiana Lupinus arcticus Veratrum viride Vaccinium ovalifolium Carex nigricans	subalpine fir mountain hemlock arctic lupine green false hellebore oval-leaf blueberry black alpine sedge	— — — — — —	— — — — — —	— — — — — —

Pedon Restrictions
Kind	Hardness	Restriction Depth L-H	Restriction Thickness L-RV-H
		cm
bedrock, lithic	indurated	110 - 150	- 40 -

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
andic soil properties albic horizon spodic horizon lithic contact	3—110 3—9 9—74 110—150	—107— —6— —65— —40—

Site Soil Temperature
Site Obs. Date	Depth	Sensor Kind	Temperature
	cm		C
8/30/2011 8/30/2011	15 50	— —	11 7

Setting and Climate
Slope	Slope Length USLE	Upslope Length	Elev.	Corr. Elev	Aspect	MAP	REAP	FFD	MAAT	MSAT	MWAT	MAST	MSST	MWST	MFFP	PE Index	Climate Station ID	Climate Station Name	Climate Station Type
%	m				degrees	mm	mm		C						mm
25	—	—	1567	—	295	2769	—	90	3.9	—	—	3	—	—	—	—	679	Paradise	SNOTEL

Oi—0 to 1 centimeters (0.0 to 0.4 inches); slightly decomposed plant material; 80 percent sand; 18 percent silt; 2 percent clay; many (8.0) fine high-continuity interstitial pores; fragments; abrupt wavy boundary.; moderately dry when described; observed in pit, small. Thin discontinuous tephra between Oi and Oe horizons, likely Mt. St. Helens 1980 tephra.

Oe—1 to 3 centimeters (0.4 to 1.2 inches); moderately decomposed plant material; 80 percent sand; 18 percent silt; 2 percent clay; few (0.8) very fine roots throughout and few (0.8) fine roots throughout; many (8.0) fine moderate-continuity interstitial pores; fragments; abrupt wavy boundary.; slightly dry when described; observed in pit, small

E—3 to 9 centimeters (1.2 to 3.5 inches); 70 percent very dark grayish brown (10YR 3/2) crushed and 30 percent light brownish gray (10YR 6/2) crushed, light gray (10YR 7/2) crushed, dry; medial loamy sand; 80 percent sand; 18 percent silt; 2 percent clay; weak fine subangular blocky structure; soft, very friable, nonsticky, nonplastic; common (3.0) very fine roots throughout and few (0.8) medium roots throughout and common (3.0) fine roots throughout; common (3.0) very fine low-continuity interstitial and common (3.0) fine low-continuity interstitial pores; fragments, pH indicator strip; abrupt wavy boundary. Lab sample # 13N01068; moist when described; observed in pit, small. Horizon likely Mt. St. Helens Wn tephra.

Bs1—9 to 25 centimeters (3.5 to 9.8 inches); dark brown (7.5YR 3/2) crushed, brown (7.5YR 5/2) crushed, dry; medial sandy loam; 60 percent sand; 35 percent silt; 5 percent clay; moderate medium subangular blocky structure; soft, very friable, nonsticky, nonplastic; many (8.0) very fine roots throughout and common (3.0) medium roots throughout and many (8.0) fine roots throughout and common (3.0) coarse roots throughout; common (3.0) very fine low-continuity irregular and common (3.0) fine low-continuity irregular pores; 5 percent by volume nonflat subangular moderately coherent cemented 5-51-75 millimeter pumice fragments and 5 percent by volume nonflat subangular moderately coherent cemented 2-4-5 millimeter pumice fragments, pH indicator strip; clear wavy boundary. Lab sample # 13N01069; moist when described; observed in pit, small

Bs2—25 to 36 centimeters (9.8 to 14.2 inches); dark brown (10YR 3/3) crushed, brown (10YR 5/3) crushed, dry; medial loamy sand; 80 percent sand; 18 percent silt; 2 percent clay; moderate medium subangular blocky structure; soft, very friable, nonsticky, nonplastic; common (3.0) very fine roots throughout and few (0.8) medium roots throughout and common (3.0) fine roots throughout and few (0.8) coarse roots throughout; common (3.0) very fine moderate-continuity irregular and common (3.0) fine moderate-continuity irregular pores; 5 percent by volume nonflat subrounded moderately coherent cemented 5-51-75 millimeter pumice fragments and 5 percent by volume nonflat subrounded moderately coherent cemented 2-4-5 millimeter pumice fragments, pH indicator strip; clear wavy boundary. Lab sample # 13N01070; moist when described; observed in pit, small. Horizon likely Mt. St. Helens Yn tephra. Fragments are pumice, 10YR 6/3 moist.

2Bs3—36 to 74 centimeters (14.2 to 29.1 inches); dark yellowish brown (10YR 4/4) crushed, light yellowish brown (10YR 6/4) crushed, dry; very cobbly medial sandy loam; 70 percent sand; 26 percent silt; 4 percent clay; moderate medium subangular blocky structure; soft, very friable, nonsticky, nonplastic; few (0.8) very fine roots throughout and few (0.8) medium roots throughout and few (0.8) fine roots throughout and few (0.8) coarse roots throughout; common (3.0) very fine moderate-continuity irregular and common (3.0) fine moderate-continuity irregular pores; 10 percent by volume nonflat subangular indurated 2-4-5 millimeter andesite fragments and 15 percent by volume nonflat subangular indurated 5-51-75 millimeter andesite fragments and 20 percent by volume nonflat subangular indurated 75-152-250 millimeter andesite fragments, pH indicator strip; clear wavy boundary. Lab sample # 13N01071; moist when described; observed in pit, small

2BC—74 to 110 centimeters (29.1 to 43.3 inches); yellowish brown (10YR 5/4) crushed, light yellowish brown (10YR 6/4) crushed, dry; very gravelly medial sandy loam; 70 percent sand; 26 percent silt; 4 percent clay; moderate coarse subangular blocky structure; soft, very friable, nonsticky, nonplastic; few (0.8) very fine roots throughout and few (0.8) fine roots throughout; common (3.0) very fine moderate-continuity irregular and common (3.0) fine moderate-continuity irregular pores; 10 percent by volume nonflat subangular indurated 2-4-5 millimeter andesite fragments and 15 percent by volume nonflat subangular indurated 75-152-250 millimeter andesite fragments and 20 percent by volume nonflat subangular indurated 5-51-75 millimeter andesite fragments, pH indicator strip; abrupt irregular boundary. Lab sample # 13N01072; moist when described; observed in pit, small

3R—110 to 150 centimeters (43.3 to 59.1 inches); unweathered bedrock; fragments.; observed in pit, small