LOCATION BALDHILL WAEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, isotic, mesic Vitrandic Dystroxerepts
TYPICAL PEDON: Baldhill very stony sandy loam-forested. (Colors are for moist soil unless otherwise stated.)
A--0 to 4 inches; dark brown (l0YR 3/3) very stony sandy loam, brown (l0YR 5/3) dry; moderate fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; common very fine and fine and few medium coarse roots; common very fine and fine interstitial pores; 5 percent stones on surface; 20 percent pebbles; 5 percent cobbles, 5 percent stones; moderately acid (pH 6.0); clear smooth boundary. (4 to 7 inches thick)
BA--4 to l2 inches; dark yellowish brown (l0YR 4/4) very stony sandy loam, pale brown (l0YR 6/3) dry; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; common very fine and fine and few medium and coarse roots; many very fine and fine interstitial pores; 20 percent stones, 5 percent cobbles, and l5 percent pebbles; moderately acid (pH 5.8) gradual wavy boundary. (5 to l0 inches thick)
Bwl--l2 to 29 inches; dark brown (l0YR 4/3) very stony sandy loam, pale brown (l0YR 6/3) dry; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; common very fine and fine and few medium roots; many very fine and fine interstitial pores; 20 percent stones, 5 percent cobbles and 25 percent pebbles; moderately acid (pH 6.0); gradual wavy boundary. (l5 to 20 inches thick)
Bw2--29 to 36 inches; olive brown (2.5Y 4/4) very gravelly sandy loam, light brownish gray (2.5Y 6/2) dry, weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; few medium roots; many very fine and fine interstitial pores; 35 percent pebbles; slightly acid (pH 6.4); clear wavy boundary. (5 to 9 inches thick)
Bw3--36 to 45 inches; olive brown (2.5Y 4/4) very gravelly sandy loam, pale brown (l0YR 6/3) dry; weak fine and medium subangular blocky structure; soft, very friable, nonsticky and nonplastic; few medium roots; many very fine and fine interstitial pores; 50 percent pebbles; slightly acid (pH 6.4); clear wavy boundary. (0 to l0 inches thick)
Bw4--45 to 54 inches; dark yellowish brown (l0YR 4/4) extremely gravelly sandy loam, pale brown (l0YR 6/3) dry; weak fine and medium subangular blocky structure; soft, very friable, nonsticky and nonplastic; few fine roots; many very fine and fine interstitial pores; 65 percent pebbles; neutral (pH 6.6); abrupt wavy boundary. (0 to l2 inches thick)
C--54 to 60 inches; dark yellowish brown (l0YR 4/6) very gravelly loamy sand, yellowish brown (l0YR 5/8) dry; weak medium and coarse subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine and fine interstitial pores; 50 percent pebbles; neutral (pH 6.8).
TYPE LOCATION: Thurston County, Washington; about 8 miles southeast of Yelm, 400 feet west and 200 feet north of southeast corner of sec. 29, T. l6 N., R. 3 E.
RANGE IN CHARACTERISTICS: Solum thickness is 30 to 60 inches. These soils are usually moist but are dry in the moisture control section for 60 to 75 consecutive days following summer solstice. The mean annual soil temperature is estimated to range from 49 to 52 degrees F. The particle-size control section averages 2 to l0 percent clay by weight and averages 35 to 60 percent rock fragments by volume including l0 to 25 percent stone size fragments, 20 to 45 percent pebbles and 0 to l5 percent cobble size fragments.
The A horizon has hue of l0YR and 7.5YR, value of 2 or 3 moist and 4 through 6 dry, and chroma of 2 through 4 moist or dry. It is slightly acid or moderately acid.
The Bw horizon has hue of 7.5YR, l0YR or 2.5Y, value of 3 or 4 moist, 5 or 6 dry and chroma of 3 through 6 moist or dry. Texture is very stony sandy loam, very gravelly sandy loam or extremely gravelly sandy loam. It is slightly acid or moderately acid in the upper part and neutral through moderately acid in the lower part.
The C horizon has hue of l0YR or 2.5Y, value of 3 or 4 moist, 5 or 6 dry and chroma of 4 through 8 moist or dry. Texture is very gravelly loamy sand, extremely gravelly loamy sand or very cobbly loamy sand. It is slightly acid or neutral.
COMPETING SERIES: These are the Atring, Beausite, Beekman, Brew, Clallam, Farber, Hartless, Inskip, Kanid, Kindig, Longdoe, Mayacama, Neuns, Sheetiron, Straight, Terbies, Vena and Woodin series. Beekman, Beausite, Brew, Inskip, Longoe, Mayacama, Neuns, Sheetiron, and Vena soils have a lithic contact within a depth of 40 inches. Atring, Clallam and Straight soils have a paralithic contact within a depth of 40 inches. Terbies soils are dry for 45 to 60 days in the soil moisture control section and have 40 to 80 percent hard angular sandstone fragments in the particle-size control section. Farber soils are dry 45 to 60 days in the soil moisture control section. Hartless soils have a hue of 7.5YR or 5YR, are dry more than 75 consecutive days and are strongly arid or very strongly arid throughout the particle-size control section. Kanid soils are more than 18 percent clay in the particle-size control section. Kindig soils are dry for 80 to 100 days in the soil moisture control section and have a hard Bt horizon.
GEOGRAPHIC SETTING: Baldhill soils are on terminal moraines at elevation os 400 to 700 feet. They formed in glacial drift and have slopes of 0 to 60 percent. These soils are in a maritime climate of cool dry summers and mild wet winters. Mean annual precipitation ranges from 40 to 60 inches most of which falls between October and April. Average January temperature is 36 degrees F., the average July temperature is 62 degrees F., and mean annual temperature is about 50 degrees F. The frost-free season ranges from l60 to 2l0 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Alderwood, Everett, Indianola, Kapowsin, Mukilteo, and Norma soils. Alderwood and Kapowsin soils have a duripan. Everett soils are sandy-skeletal. Indianola soils are sandy throughout. Mukilteo soils are Histosols. Norma soils have an aquic moisture regime and are coarse-loamy.
DRAINAGE AND PERMEABILITY: Well drained, slow runoff; moderately rapid permeability.
USE AND VEGETATION: Woodland, wildlife habitat, recreation and watershed are the principal uses. Vegetation is Douglas-fir and red alder, with an understory of salal, huckleberry and western swordfern.
DISTRIBUTION AND EXTENT: Puget lowlands in west central Washington. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Thurston County, Washington 1982.
REMARKS: Classification only changed 4/94 because of recent amendments to Soil Taxonomy. Estimated >5 percent glass and >0.4 percent acid-oxalate extract at 0 to 12 inches. Diagnostic horizon and features recognized in this pedon are an ochric epipedon and a cambic horizon from 4 to 54 inches. The particle-size control section (10 to 40 inches) averages 46 percent rock fragments.