1350 Orono Oaks Delineation - Laserfiche WebLink

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ERIN SERIES The Erin series consists of deep, well drained and moderately well drained soils with moderately slow permeability. They formed in a 3 to 10 foot thick layer of shale rich till. Underlying this is a calcareous loamy till. Slopes range from 2 to 35 percent. Mean annual precipitation is about 30 inches. Mean annual temperature is about 49 degrees F. TAXONOMIC CLASS: Fine, smectitic, mesic Glossic Hapludalfs TYPICAL PEDON: Erin silt loam on a 12 percent convex shaped north to northwest facing wooded slope. (Colors are for moist soil unless otherwise stated.) A--0 to 3 inches; very dark gray (10YR 3/1) silt loam; gray(10YR 5/1) dry; weak fine granular structure; very friable; slightly acid; abrupt smooth boundary. (2 to 5 inches) E1--3 to 9 inches; dark grayish brown (10YR 4/2) silt loam; light brownish gray(10YR 6/2) dry; weak and moderate medium platy structure; very friable; medium acid; abrupt smooth boundary. E2--9 to 12 inches; dark gray(10YR 4/1) silt loam; light gray (10YR 6/1) dry; weak fine and medium subangular blocky structure; friable; medium acid; clear wavy boundary. (Combined thickness of E horizons is 0 to 10 inches.) B/E--12 to 22 inches; dark grayish brown (10YR 4/2) clay loam(Bt); light brownish gray(10YR 6/2) silt coatings on peds (E); moderate and strong fine and medium subangular structure; about 3 percent coarse fragments, mostly shale; strongly acid; clear smooth boundary. (4 to 12 inches thick) Btl--22 to 33 inches; olive brown (2.5Y 4/4)clay; few fine prominent reddish brown (5YR 4/4) mottles; strong medium prismatic structure parting to strong fine and medium angular and subangular blocky; very firm; many distinct very dark grayish brown (10YR 3/2) clay films on faces of peds; about 3 percent coarse fragments, mostly shale; very strongly acid; gradual wavy boundary. Bt2--33 to 44 inches; light olive brown (2.5Y 5/4 and 5/6) clay loam; few fine prominent reddish brown (5YR 4/4) mottles; strong coarse prismatic structure parting to strong medium angular blocky; firm; many distinct very dark grayish brown (10YR 3/2) clay films on faces of peds; about 8 percent coarse fragments, mostly shale; very strongly acid; gradual wavy boundary. Bt3--44 to 57 inches; light olive brown (2.5Y 5/4 and 5/6) clay loam; common medium distinct light brownish gray(2.5Y 6/2) mottles and a few fine prominent reddish brown (5YR 4/4) mottles; strong coarse prismatic structure parting to strong medium angular blocky; firm; many distinct very dark brown (10YR 2/2) and dark grayish brown (10YR 4/2) clay films on faces of peds; about 3 percent coarse fragments, mostly shale; many fine old root channel fillings of black clayey-organic material; strongly acid; gradual wavy boundary. (Combined thickness of Bt horizons is 15 to 40 inches.) Svoboda Ecological Resources 1350 Orono Oaks Drive Project No.:2007-061-03 25 Ron Ridgeway