PERMFILE66866

• Permit No: M2002078
• IBM Index Class Name: Permit File
• Doc Date: 7/19/2002
• Doc Name: Permit Application
• From: Coulson Excavating Company Inc
• To: DMG
• Media Type: D
• Archive: No

Coulson Excavating Company, Inc. -Stroh Gravel Pit
Exhibit I -Soils Information
Soils present in the permit area were determined from the Soil Survey Map of Larimer
County Area, Colorado, 1980: United States Department of Agriculture Soil
Conservation Service and Forest Service - in cooperation with Colorado Agricultural
Experiment Station. (Soil Survey of Larimer County Area, Colorado, 1980)
The permit area for Stroh Gravel Pit contains the following soils (See Exhibit C):
• Fluvaquents (33), nearly level;
• Loveland Clay Loam (64), 0 - 1% slopes;
• Paoli Fine Sandy Loam (81), 0 - I% slopes; and
• Table Mountain Loam (105), 0 - 1% slopes.
Fluvaquents consist of variable layers ranging from sandy loam to clay loam, stratified
with thin layers of sand or clay. Underlying material is sand and gravel. Usually, a water
table exists at a depth of less than 12 inches. Here runoff and the hazard of erosion are
small. This soil is matched to pasture or native grasses.
Loveland series soils are classified as deep and poorly drained. The surface layer is
described as mottled dark grayish-brown or grayish-brown clay loam, approximately 15
inches thick. Underlying material is grayish-brown clay loam on top of sand, gravel and
cobbles, approximately I7 inches thick. Native vegetation is made up of blue grama,
bluegrass and sedges. The permeability ranges from moderately slow above 32 inches to
very rapid below 32 inches. Water capacity ranges from medium to high. These soils are
most suitable for imgated and dry-farmed crops. The hazard of water erosion is small and
runoffis slow.
Paoli series soils are classified as deep and well drained. The surface layer is an
approximate 42-inch thick dark brown fine sandy loam. Underlying material consists of
brown fine sandy loam. Native vegetation consists of blue grama, bluestems, needlegrass
and a few forbs and shrubs. Paoli soils have a moderately rapid permeability and high
water capacity making them suitable for irrigated crops. Here runoff is slow and the
hazard of water erosion is minor while wind erosion is moderate.
Table Mountain series soils aze classified as deep and well drained, The surface layer is a
grayish-brown loam approximately 36 inches deep. Underlying material includes a 10-
inch thick layer of brown fine sandy loam and a 5-inch thick layer of yellowish-brown
fine sandy loam. Sand and gravel exist below the underlying material. The native
vegetation consists of blue grama, bluegrass, bromegrass and a few forbs and shrubs.
Table Mountain series soils have moderate permeability and high water capacity making
them suitable for irrigated and dry-farmed crops. In this case, runoff is stow and the
hazard of water erosion is minimal.
Based on these depths, the average depth of the topsoil over the permit area is
approximately 1.93 feet. The northern and southern mining zones contain a total of
approximately 286,348 yd' of topsoil, which will be removed and stockpiled and then re-
spread during reclamation.
H:\Stroh\word\DMG\Exhibit Ldoc