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Engineering Index Properties
Soil Survey Area: C0618 Weld County, Colorado, Southern Part
Mapunit 66 ULM CLAY LOAM, 0 TO 3 PERCENT SLOPES
Component: ULM %of Mapunit 85
Hydrologic Group C Frost Action: Low Corrosivity to Concrete: Low Corrosivity to Steel: Moderate
Depth in Fragments % Percentage passing sieve Liquid Plasticity Classification
inches >10 3-10 #4 #10 #40 #200 Limit Index Unified AASIITO
0 5.1 0 0 0 0 100 100 100 100 90 100 70 80 30 40 10 20
CL A-6
5.1 19 I 0 0 0 0 100 100 100 100 90 100 75 95 40 50 15 25
CL A-7
19 60 0 0 0 0 100 100 100 100 90 100 70 95 35 50 15 25
CL A-7
CL A-6
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Wednesday,August 29,2001 Soil Surrey information downloaded from National Soil Information System Page 1 of 1
(NAS/S), USDA Natural Resources Conservation Service
EXHIBIT
2002-0053 1 O ,vR
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Non-Technical Descriptions
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Soil Survey Area: 618 WELD COUNTY, COLORADO, SOUTHERN PART
Map unit: 66 Ulm clay loam, 0 to 3 percent slopes
Description Category: SO1
The Ulm soil is a deep,well drained soil. It formed in clayey alluvium on plains and
high terraces of the South Platte. The surface is a clay loam. The subsoil is a clay.
The substratum is a clay or clay loam extending to 60 inches or more. The soils
have a slow to very slow permeability. The available water holding capacity is high and
roots penetrate to 60 inches or more. Runoff is slow to medium and the hazard to wind
erosion is moderate.
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This map is compiled on 1974 aerial 5
photography by the U.S. Department
of Agriculture, Soil Conservation Service
and cooperating agencies.
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• Prime Farmland
CO618 - Weld County, Colorado, Southern Part
Map Unit
Symbol Map Unit Name Prime Classification
66 ULM CLAY LOAM,0 TO 3 PERCENT SLOPES /v C4 ;fend frinIP
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Wednesday,August 29,2001 Soil Survey information downloaded from National Soil Information System Page 1 of 1
(NASIS),USDA Natural Resources Conservation Service
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