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HomeMy WebLinkAbout1.0 Application/GH OUNTRY NG/NEER/NG March 13, 1995 Garfield County Planning & Zoning 109 8th Street, 3rd Floor Glenwood Springs, CO 81601 RE: Cedar Hills Ranch Sketch Plan Submittal HCE Job No. 95020.01 To Whom It May Concern: Please submit this revision with the Cedar Hills Ranch Sketch Plan Submittal. The densities shown on the Plan Sheet are incorrect. Please use the following densities: Proposed Parcel Dwelling Density Proposed Option Parcel Density 0.22 units/acre 0.20 units/acre I apologize for the inconvenience. If you have any questions, please give me a call. Sincerely, HIGH COUNTRY ENGINEERING, INC. Roger Neal, P.E. Project Engineer RDN:rjh 923 Cooper Avenue • Glenwood Springs, CO 81601 Telephone: 303-945-8676 • FAX: 303-945-2555 M • CEDAR HILLS RANCH SKETCH PLAN SUBMITTAL HCE Project No. 95020.01 March 10, 1995 GENERAL: The proposed Cedar Hills Ranch is located off County Road 214 approximately 1/2 mile North of I-70, and approximately 4 miles West of New Castle. The property is currently zoned ARRD and no change in zoning is requested. The proposed uses consist of 26 residential home sites and a community park area. The Proposed Plan and the SCS soils information for the area are included. UTILITIES: All standard utilities are already available at County Road 214, which is immediately adjacent to the site, as well as the proposed access point. These utilities include natural gas, underground electric, telephone, and cable TV. Extensions can easily be made to service each proposed lot. Water: The proposed water system shall be private wells serving groups of lots, which will be defined by the successful well locations. Individual Sewage Disposal Systems: This property is to be serviced by (ISDS). Site specific studies will be performed to identify areas of poor percolation. Lots should be of sufficient size to allow location of adequate individual sewage disposal systems. GRADING AND ROADS: No overlot grading is proposed by the developer, and none is envisioned to be necessary, other than that directly attributed to the roads. All lots will have access either directly to a public right-of-way, or indirectly via internal access easements. Roadways within the project will be built to County Road Standards. GENERAL IMPACTS: The site is not adjacent to any lakes or streams, and no overlot grading is proposed, therefore, we expect general impacts related to the development of this site to be minimal. • 1 CEDAR HILLS RANCH Box 1155 Basalt, Colorado 81621 303-927-4418 Garfield County Planning and Zoning Glenwood Springs, CO March 10, 1995 To the members of Garfield P&Z, Introduction The Sketch Plan being submitted is for "Cedar Hills Ranch". This is a 26 lot subdivision located just north of the Castle roping arena on 214 Road. We are very excited to have the opportunity to put together a project on this special piece of ground. From the beginning we have been determined to cut the density in half and submit a plan to you that is well thought out and carefully planned while still being financially possible. This plan encompasses about 120 acres and proposes 26 home sites. We have met informally with a number of people to assure it will be a good project and one that the people in Silt and Newcastle will be proud of. Each site has been walked and rewalked in an attempt to determine building sites so they have maximum views with the least possible impact on the adjoining lots. Lots will range in size from just over 2 acres to 8 acres with an average of around 5 acres. Ownership The property is under contact between purchasers, Spring Creek Land Co., LLC of Basalt, CO and the seller, Mr. David Mayes ofFruita, CO. It is scheduled to close by April 1, 1995. The initial purchase is for 77 acres with an option to purchase the 42 acres adjacent to it. We are planning both together as they are designed to be one project with one Homeowners Association upon completion. The names and addresses of the partners in Spring Creek Land Co are: Norm Clasen- Box 1155, Basalt, CO 81621 303-927-4418 James Christell- 511 Woodland Lane South, Northfield, IL 60093 708-446-5832 Scott Brewer- 941 Pleasant Lane, Glenview, IL 60025 708-724 9453 Irrigation page 2 The lower lots will be centered around 3 parcels that utilize the pasture land. We are going to install an underground watering system and keep all 22 shares of the Roseman ditch intact for maximum efficiency of the irrigation water. Pastures New fencing will be installed on the pastured lots. We will dismantle the old corrals, clean up the vacant land and improve the existing houses along 214 Road. U.S. West plans on taking down the abandoned telephone lines on the north side of 214 Road by early summer. We plan on reclaiming the pastures, which are suffering from years of abuse, to productive, well maintained fields. Roads We are planning the entrance at a high spot on 214 road for maximum line of site and safety from both directions. We propose the main roads to be 22 feet wide with 4 foot shoulders dropping to 16 foot plus 2 foot shoulders for the portion of roads that serve the last 10 sites. Utilities All utilities are ready to tap on to along 214 Road. That includes natural gas, a newly buried telephone line and electric. No cable TV exists at the site. Utilities are to be buired along road easements. Water wells Two water wells presently exist on the lower portion of the land. Each produces around 20 gallons per minute and provide excellent drinking water. We propose individual water wells and storage tanks for each house. We have had discussions with Russell George regarding augmented water for the project and expect that to be part of our plan. To limit the use of water, we plan to restrict landscaping and encourage a zeroscape approach. Septic We are proposing individual sewer systems assuming the soils are as suitable in this area as they are in neighboring areas. • 1 page 3 Fire protection We have had conversations with Don Zordel regarding fire protection for the project. He feels we have excellent back up water sources from the big pond on the lower land and another spring -fed pond located nearby. We have discussed the use of the ditch water as another source but of course that only runs at certain times of the year and is not dependable. It could, however, be important during the summer months. Don feels we are better equipped than most subdivisions to deal with secondary water for fire protection and will work with us to properly develop these and whatever else is needed. Covenants We have not drafted any covenants at this time but feel strongly they will be detailed as to the use and location of building sites, water useage, protection of native animals, open space and road maintenance. Common land We plan on dedicating a section of common land to be used for community recreation such as volleyball, bar-b-ques, horseshoes, a children's park or just a place to sit under the huge cottonwoods and relax. We will be provide permanent riding and hiking trails, by means of easements, to the BLM which borders the property to the north. Summary In summary, we want this to be a good project in all aspects. The land has a special character. It is a combination of meadows, ridges, and gentle benches. It has a wide variety of flora including cottonwoods, Junipers, Cedars, willows, sage and native grasses. The topography has some outstanding rock outcrops which we intend to preserve and exceptional views occur from many different locations throughout the property. We look forward to working with High Country Engineering and the Garfield County Planning and Zoning staff to make this an exceptional development for the commissioners consideration. Sincerely you'," Norm Cl . sen, Project Manager RIFLE AREA, COLORADO Included with this soil in mapping are small areas of Arvada and Ildefonso soils. The Arvada soils are moder- ately sloping, and the Ildefonso soils are steeper. These areas make up 10 to 15 percent of the map unit. Permeability is moderately rapid, and available water capacity is low. Effective rooting depth is 60 inches. Surface runoff is slow, and the erosion hazard is severe. This soil is used mainly for grazing and wildlife habitat. The native vegetation on this soil is mainly wheat - grass, needleandthread, and sagebrush. When range condition deteriorates, forbs and shrubs increase. When the range is in poor condition, undesira- ble weeds and annual plants are numerous. Properly managing grazing maintains and improves range condi- tion. Reducing brush improves range, but desirable shrubs should not be destroyed. Mule deer, cottontail rabbit, chukar, and squirrel find habitat on this soil. Community development is limited by steep slopes. Community sewage facilities will be needed if population density increases. This soil is in capability subclass Vile, nonirrigated. 48—Northwater loam, 15 to 65 percent slopes. This deep, well drained, hilly to very steep soil is on moun- tainsides. Elevation ranges from 7,600 to 8,400 feet. This soil formed in residuum from sedimentary rocks. The average annual precipitation is about 20 inches, the average air temperature is about 40 degrees F, and the average frost -free period is less than 75 days. Typically, the upper part of the surface layer is brown loam about 10 inches thick. In most places 2 inches of organic material is on the surface. The lower part of the surface layer is dark grayish brown loam about 15 inches thick. The subsoil is Tight brown very channery clay loam about 25 inches thick. Fractured sandstone is at a depth of 50 inches. Included with this soil in mapping are small areas of Parachute, Rhone, and Irigul soils. The Rhone soils are on the north -facing side slopes, and the Parachute and Irigul soils are near ridge crests. These areas make up 10 to 15 percent of the map unit. Permeability is moderate, and available water capacity is moderate. Effective rooting depth is .10 to 60 inches. Surface runoff is slow, and the erosion hazard is slight. This soil is used mainly for limited grazing, wildlife habitat, and recreation. The native vegetation is aspen and an understory mostly of mountain brome, elk sedge, slender wheat - grass, aspen peavine, aspen fleabane, snowberry, servi- ceberry, and chokecherry. When the understory vegetation deteriorates, forbs, shrubs, and Kentucky bluegrass increase. This soil is suited to production of quaking aspen. It can produce 4,050 cubic feet of wood or 6,800 board feet of timber per acre from a fully stocked, even -aged stand of 80 -year-old trees. At the present there is no 29 commercial harvest of aspen. Steep slopes affect har- vesting, and special attention is needed to reduce soil loss during harvest. Elk, mule deer, coyote, and grouse find habitat on this soil. Use of this soil for community development, for sani- tary facilities, and as a source of construction material is limited by slope and depth to rock. This soil is in capability subclass Vile, nonirrigated. 49—Olney loam, 1 to 3 percent slopes. This deep, well drained, nearly level soil is on alluvial fans and sides of valleys. Elevation ranges from 5,000 to 6,500 feet. This soil formed in alluvium derived from sandstone and shale. The average annual precipitation is about 14 inches, the average annual air temperature is about 48 degrees F, and the average frost -free period is about 125 days. Typically, the surface layer is grayish brown loam about 12 inches thick. The subsoil is grayish brown and light gray sandy clay loam about 21 inches thick. The substratum is light gray gravelly sandy clay loam or very gravelly sandy loam to a depth of 60 inches. Included with this soil in mapping are small areas of Heldt, Potts, and Kim soils that have slopes of 2 to 3 percent. These areas make up 5 to 15 percent of the map unit. Permeability is moderate, and available water capacity is moderate. Effective rooting depth is 60 inches or more. Surface runoff is slow, and the erosion hazard is slight. This soil is mainly used for irrigated crops and hay. Alfalfa, small grains, corn for silage, and grass or grass - legume mixtures are grown. Small acreages are in fruits, including apples, peaches, and apricots. This soil is irrigated by furrows and flooding. Sprinklers are also suitable. Drop structures in irrigation ditches help to control water and prevent excessive ditch ero- sion. The native vegetation on this soil was mainly wheat - grass, needleandthread, and sagebrush. When range condition deteriorates, forbs and shrubs increase. When the range is in poor condition, undesira- ble weeds and annual plants are numerous. Cottontail rabbit, squirrel, pheasant, and some mule deer tind habitat on this soil. Community development and recreation are limited by low strength. This soil is in capability subclass Ille, irrigated. 50—Olney loam, 3 to 6 percent slopes. This deep, well drained, gently sloping soil is on alluvial fans and sides of valleys. Elevation ranges from 5,000 to 6,500 feet. This soil formed in alluvium derived from sandstone and shale. The average annual precipitation is about 14 inches, the average annual air temperature is about 48 30 SOIL SURVEY degrees F, and the average frost -free period is about 125 days. Typically, the surface layer is grayish brown loam about 12 inches thick. The subsoil is grayish brown and Tight gray sandy clay loam about 21 inches thick. The substratum is light gray gravelly sandy day loam or very gravelly sandy loam to a depth of 60 inches. Included with this soil in mapping are small areas of Heldt, Potts, and Kim soils that have slopes of 3 to 6 percent. These areas make up 5 to 15 percent of the map unit. Permeability is moderate, and available water capacity Is moderate. Effective rooting depth is 60 inches or more. Surface runoff is slow, and the erosion hazard is moderate. This soil is used mainly for irrigated crops and hay. Alfalfa, small grains, corn for silage, and grass or grass - legume mixtures are grown. Small acreages are in fruits, including apples, peaches, and apricots. Isolated areas are used for grazing. This soil is irrigated by furrows and flooding. Sprinklers are also suitable. Drop structures in irrigation ditches help to control water and prevent excessive ditch ero- sion. The native vegetation on this soil is mainly wheat - grass, needleandthread, and sagebrush. When range condition deteriorates, forbs and shrubs increase. When the range is in poor condition, undesira- ble weeds and annual plants are numerous. Properly managing grazing maintains and improves range condi- tion. Reducing brush improves deteriorated range. Seed- ing improves range in poor condition. Crested wheat - grass, western wheatgrass, and Russian wildrye are suit- able for seeding. Preparing a seedbed and drilling the seed are good practices. Cottontail rabbit, squirrel, pheasant, and some mule deer find habitat on this soil. Community development and recreation are limited by low strength. This soil is in capability subclasses Ille, irrigated, and IVe, nonirrigated. 51—Olney loam, 6 to 12 percent slopes. This deep, well drained, moderately sloping to rolling soil is on allu- vial fans and sides of valleys. Elevation ranges from 5,000 to 6,500 feet. This soil formed in alluvium derived from sandstone and shale. The average annual precipita- tion is about 14 inches, the average annual air tempera- ture is about 48 degrees F, and the frost -free period is about 125 days. Typically, the surface layer is grayish brown loam about 12 inches thick. The subsoil is grayish brown and light gray sandy clay loam about 21 inches thick. The substratum is Tight gray gravelly sandy clay loam and very gravelly sandy loam to a depth of 60 inches. Included with this soil in mapping are small areas of Heldt, Potts, and Kim soils that have slopes of 6 to 12 percent. These areas make up 5 to 15 percent of the map unit. Permeability is moderate, and available water capacity is moderate. Effective rooting depth is 60 inches or more. Surface runoff is medium, and the erosion hazard is moderate. This soil is used mainly for irrigated hay, fruits, and grazing. Grass -legume mixtures and apples, peaches, and apricots are grown. This soil is irrigated by furrows and flooding. Sprinklers are also suitable. Drop structures in irrigation ditches help to control water and prevent excessive ditch ero- sion. Keeping a grass or legume cover on this soil at least three-fourths of the time controls erosion. The native vegetation on this soil is mainly wheat - grass, needleandthread, and sagebrush. When range condition deteriorates, forbs and shrubs increase. When the range is in poor condition, undesira- ble weeds and annual plants are numerous. Properly managing grazing maintains and improves range condi- tion. Reducing brush improves the range. Seeding im- proves range in poor condition. Crested wheatgrass, western wheatgrass, and Russian wildrye are suitable for seeding. Preparing a seedbed and drilling the seed are good practices. Cottontail rabbit, squirrel, pheasant, and some mule deer find habitat on this soil. Community development and recreation are limited by steep slopes and low strength. This soil is in capability subclass IVe, irrigated and nonirrigated. 52—Parachute loam, 25 to 65 percent slopes. This moderately deep, well drained, hilly to very steep soil is on north- and east -facing mountainsides. Elevation ranges from 7,500 to 8,700 feet. This soil formed in residuum from sandstone. The average annual precipita- tion is 20 inches, the average annual air temperature is about 40 degrees F, and the average frost -free period is Tess than 75 days. Typically, the surface layer is grayish brown loam about 5 inches thick. The upper part of the subsoil is very dark grayish brown and brown loam about 13 inches thick, and the lower part is light yellowish brown extremely channery loam about 11 inches thick. Hard, fractured sandstone bedrock is at a depth of 29 inches. Included with this soil in mapping are small areas of Rhone and Irigul soils. The Rhone soils are in concave positions. These areas make up 10 to 15 percent of the map unit. Irigul soils are on ridge crests. Permeability is moderate, and available water capacity is low. Effective rooting depth is 20 to 40 inches. Surface runoff is medium, and the erosion hazard is moderate. This soil is used mainly for wildlife habitat and limited grazing. V 32 • 55—Potts loam, 3 to 6 percent slopes. This deep, well drained, moderately sloping soil is on mesas, bench- es, and sides of valleys. Elevation ranges from 5,000 to 7,000 feet. This soil formed in alluvium derived from sandstone, shale, or basalt. The average annual precipi- tation is about 14 inches, the average annual air tem- perature is about 46 degrees F, and the average frost - free period is about 120 days. Typically, the surface layer is brown loam about 4 inches thick. The subsoil is reddish brown clay loam about 24 inches thick. The substratum is pinkish white loam to a depth of 60 inches. Included with this soil in mapping are small areas of Olney, Kim, and Ildefonso soils that have slopes of 3 to 6 percent. These areas make up 10 to 15 percent of the map unit. Permeability is moderate, and available water capacity is high. Effective rooting depth is 60 inches or more. Surface runoff is slow, and the erosion hazard is moder- ate. This soil is used mainly for irrigated crops and hay and for dryland farming (fig. 10). Alfalfa, small grains, and grass -legume hay are grown. Small areas are used for grazing. These soils are usually irrigated by flooding. Drop structures in irrigation ditches, grassed waterways, and minimum tillage prevent serious erosion. Irrigation water should be carefully managed to avoid piping and erosion. Cover crops or stubble mulching also help to limit ero- sion in dryfarmed areas. The native vegetation on this soil is mainly wheat - grass, needleandthread, and sagebrush. When range condition deteriorates, forbs and shrubs increase. When the range is in poor condition, undesira- ble weeds and annual plants are numerous. Properly managing grazing maintains and improves range condi- tion. Reducing brush improves the range. Seeding im- proves range in poor condition. Crested wheatgrass, western wheatgrass, and Russian wildrye are suitable for seeding. Preparing a seedbed and drilling the seed are good practices. Pheasant, mourning dove, cottontail rabbit, some mule deer, and squirrel find habitat on this soil. Community development and recreation are limited by low strength and the shrink -swell potential. Dwellings and roads can be designed to overcome these limita tions. Community sewage systems will be needed if the population density increases. This soil is in capability subclasses Ille, irrigated, and IVe, nonirrigated. 56—Potts loam, 6 to 12 percent slopes. This deep, well drained, moderately sloping to rolling soil is on mesas, benches, and sides of valleys. Elevation ranges from 5,000 to 7,000 feet. This soil formed in alluvium derived from sandstone, shale, or basalt. The average annual precipitation is about 14 inches, the average 1 SOIL SURVEY annual air temperature is about 46 degrees F, and the average frost -free period is about 120 days. Typically, the surface layer is brown loam about 4 inches thick. The subsoil is reddish brown clay loam about 2.4 inches thick. The substratum is pinkish white loam to a depth of 60 inches. Included with this soil in mapping are small areas of Kim, Olney, and Ildefonso soils that have slopes of 6 to 12 percent. These areas make up 10 to 15 percent of the map unit. Permeability is moderate, and available water capacity is high. Effective rooting depth is 60 inches or more. Surface runoff is medium, and the erosion hazard is severe. This soil is used mainly for grazing, wildlife habitat, and some dryland farming (fig. 10). Wheat, barley, and oats are grown. Minimum contour tillage and stubble mulching help to prevent excessive erosion. The native vegetation on this soil is mainly wheat - grass, needleandthread, and sagebrush. When range condition deteriorates, forbs and shrubs increase. When the range is in poor condition, undesira- ble weeds and annual plants are numerous. Properly managing grazing improves and maintains range condi- tion. Reducing brush improves range. Seeding improves range in poor condition. Crested wheatgrass, western wheatgrass, and Russian wildrye are suitable for seed- ing. Preparing a seedbed and drilling the seed are good practices. Community development and recreation are limited by low strength, shrink -swell potential, and slope. Dwellings and roads can be designed to overcome these limita- tions. Community sewage systems will be needed if the population density increases. This soil is in capability subclass IVe, irrigated and nonirrigated. 57—Potts-Ildefonso complex, 3 to 12 percent slopes. These gently sloping to rolling soils are on mesas and sides of valleys. Elevation ranges from 5,000 to 6,500 feet. The Potts soil formed in alluvium derived from sandstone, shale, or basalt. The Ildefonso soil formed in very strongly calcareous, basaltic alluvium and small amounts of eolian material. The average annual precipitation is about 14 inches, the average annual air temperature is about 46 degrees F, and the average frost -free period is about 120 days. The Potts soil makes up about 60 percent of the map unit, and the Ildefonso soils makes up about 30 percent. The Potts soil is on slightly concave positions, and the Ildefonso soil is on the breaks of steeper slopes. The Potts soil is deep and well drained. Typically, the surface layer is brown loam about 4 inches thick. The subsoil is reddish brown clay loam about 24 inches thick. The substratum is pinkish white loam that extends to a depth of 60 inches. RIFLE AREA, COLORADO 33 Permeability of the Potts soil is moderate, and availa- ble water capacity is high. Effective rooting depth is 60 inches or more. Surface runoff is slow, and the erosion hazard is moderate. The Ildefonso soil is deep and well drained. Typically, the surface layer is brown stony loam about 8 inches thick. The underlying material is white, calcareous very stony loam that extends to a depth of 60 inches. Permeability of the Ildefonso soil is moderately rapid, and available water capacity is low. Effective rooting depth is about 60 inches. Surface runoff is slow, and the erosion hazard is moderate. Included with this soil in rnapping are small areas of Olney and Kim soils that have slopes of 3 to 12 percent. These areas make up 5 to 15 percent of the map unit. These soils are used mainly for limited grazing and wildlife habitat. The native vegetation on the Potts soil is rnainly wheatgrass, needleandthread, and sagebrush. The native vegetation on the Ildefonso soil is mainly pinyon and Utah juniper and an understory of Indian ricegrass, wheatgrass, junegrass, serviceberry, bitterbrush, and sa- gebrush. When the understory vegetation deteriorates, grasses almost disappear and forbs and shrubs increase. Proper- ly managing grazing maintains and improves range con- dition on both soils. Seeding improves range on the Potts soil if it is in poor condition. Crested wheatgrass, western wheatgrass, and Russian wildrye are suitable for seeding. Preparing a seedbed and drilling the seed are good practices. Reducing brush on the Potts soil im- proves the range. Properly managing the vegetation on the Ildefonso soil maintains wood production and graz- ing. Selectively thinning pinyon and juniper improves grazing and provides firewood, posts, and Christmas trees. The Ildefonso soil is suited to production of pinyon and Utah juniper. R can produce 9 cords of wood per acre when trees more than 4.5 feet tall reach an average diameter (at one foot) of 5 inches. The low available water capacity affects survival of tree seedlings. Mule deer, wild turkey, chukar, gray squirrel, cottontail rabbit, and some pheasant find habitat on these soils. Community development is limited on the Potts soil by low strength, shrink -swell potential, and slope. Communi- ty development is limited on the Ildefonso soil by steep slopes. This complex is in capability subclass Vle, nonirrigated. 58—Potts-Ildefonso complex, 12 to 25 percent slopes. These strongly sloping to hilly soils are on mesas, alluvial fans, and sides of valleys. Elevation ranges from 5,000 to 6,500 feet. The Potts soil formed in alluvium derived from sandstone, shale, or basalt. The Ildefonso soil formed in very strongly calcareous, basaltic alluvium and small amounts of eolian material. The aver- age annual precipitation is about 14 inches, the average annual air temperature is about 46 degrees F, and the average frost -free period is about 120 days. The Potts soil makes up about 60 percent of this unit, and the Ildefonso soil makes up about 30 percent. The Potts soil is in slightly concave positions, and the Ilde- fonso soil is on the breaks of steeper slopes. The Potts soil is deep and well drained. Typically, the surface layer is brown loam about 4 inches thick. The subsoil is reddish brown clay loarn about 24 inches thick. The substratum is pinkish white loam to a depth of 60 inches. Permeability of the Potts soil is moderate, and availa- ble water capacity is high. Effective rooting depth is 60 inches or more. Surface runoff is medium, and the ero- sion hazard is moderate. The Ildefonso soil is deep and well drained. Typically, the surface layer is brown stony loam about 8 inches thick. The underlying material is white, calcareous very stony loam to a depth of 60 inches. Permeability of the Ildefonso soil is moderately rapid, and available water capacity is low. Effective rooting depth is about 60 inches. Surface runoff is medium, and the erosion hazard is moderate. Included with this soil in mapping are small areas of Morval and Lazear soils. The Morval soils are at the higher elevations. The Lazear soils are shallow and are on ridge crests and steep mountainsides. These areas make up 10 to 18 percent of the map unit. These soils are used mainly for limited grazing and wildlife habitat. The native vegetation on the Potts soil is mainly wheatgrass, needlearidthread, and sagebrush. The native vegetation on the Ildefonso soil is mainly pinyon and Utah juniper and an understory of Indian ricegrass, wheatgrass, junegrass, serviceberry, bitterbrush, and sa- gebrush. When the understory vegetation deteriorates, grasses almost disappear and (orbs and shrubs increase. Proper- ly managing grazing maintains and improves range con- dition on both soils. Seeding improves range in poor condition in less sloping areas of the Potts soil. Blue - bunch wheatgrass, western wheatgrass, and need- leandthread are suitable for seeding. Preparing the seedbed and drilling the seed are good practices. Con- trolling brush on the Potts soil improves range that is producing more shrubs .than are normally found in the potential plant community. Properly managing the under - story vegetation on the Ildefonso soil maintains wood production and grazing. Selectively thinning pinyon and juniper improves grazing and provides firewood, posts, and Christmas trees. The Ildefonso soil is suited to production of pinyon and Utah juniper. It can produce 9 cords of wood per acre when trees more than 4.5 feet tall reach an average diameter (at one foot) of 5 inches. The low available water capacity affects survival of tree seedlings. 34 Mule deer, wild turkey, chukar, gray squirrel, cottontail rabbit, and some pheasant find habitat on these soils. The steep slopes limit community development. Struc- tures are needed to divert runoff to minimize gullying and erosion. This complex is in capability subclass Vle, nonirrigated. 59—Potts-Ildefonso complex, 25 to 45 percent slopes. These hilly to very steep soils are on alluvial fans and sides of valleys. Elevation ranges from 5,000 to 6,500 feet. The Potts soil formed in alluvium derived from sandstone, shale, or basalt. The Ildefonso soil formed in very strongly calcareous, basaltic alluvium and small amounts of eolian material. The average annual precipitation is about 14 inches, the average annual air temperature is about 46 degrees F, and the average frost -free period is about 120 days. The Potts soil makes up about 60 percent of the map unit, and the Ildefonso soil makes up about 30 percent. The Potts soil is in slightly concave positions, and the Ildefonso soil is in the steeper, breaklike areas. The Potts soil is deep and well drained. Typically, the surface layer is brown loam about 4 inches thick. The subsoil is reddish brown clay loam about 24 inches thick. The substratum is pinkish white loam to a depth of 60 inches. Permeability of the Potts soil is moderate, and availa- ble water capacity is high. Effective rooting depth is 60 inches or more. Surface runoff is medium, and the ero- sion hazard is severe. The Ildefonso soil is deep and well drained. Typically, the surface layer is brown stony loam about 8 inches thick. The underlying material is white, very strongly cal- careous very stony loam to a depth of 60 inches. Permeability of the Ildefonso soil is moderately rapid, and available water capacity is low. Effective rooting depth is about 60 inches. Surface runoff is medium to rapid, and the erosion hazard is severe. Included with this soil in mapping are small areas of Morval and Lazear soils. The Morval soils are at the higher elevations. The Lazear soils are shallow and are on ridge crests and steep mountainsides. These areas make up 10 to 18 percent of the map unit. These soils are used mainly for limited grazing and wildlife habitat. The native vegetation on the Potts soil is mainly wheatgrass, needleandthread, and sagebrush. The native vegetation on the Ildefonso soil is mainly pinyon and Utah juniper and an understory of Indian ricegrass, wheatgrass, junegrass, serviceberry, bitterbrush, and sa- gebrush. When the understory vegetation deteriorates, grasses almost disappear and forbs and shrubs increase. Proper- ly managing grazing on the Potts soil maintains and improves the range condition. Properly managing the vegetation on the Ildefonso soil maintains wood produc- tion and ground cover. The value for grazing is low SOIL SURVEY because of steep slopes and the tree canopy. Firewood, posts, and Christmas trees can be harvested from the more gently sloping areas. The Ildefonso soil is suited to production of pinyon and Utah juniper. It can produce 9 cords of wood per acre when trees more than 4.5 feet tall reach an average diameter (at one foot) of 5 inches. The low available water capacity affects survival of tree seedlings. Steep slopes and the severe erosion affect harvesting. Mule deer, wild turkey, chukar, gray squirrel, cottontail rabbit, and some pheasant find habitat on these soils. Community development is limited by very steep slopes. This complex is in capability subclass Vile, nonirrigat- ed. 60 ---Rhone loam, 5 to 30 percent slopes. This deep, well drained, gently sloping to steep soil is on mountain- sides and ridges. Elevation ranges from 7,600 to 8,600 feet. This soil formed in residuum from sandstone and marlstone. The average annual precipitation is about 20 inches, the average annual air temperature is about 40 degrees F, and the average frost -free period is less than 75 days. Typically, the upper part of the surface layer is brown loam about 8 inches thick, and the lower part is brown sandy clay loam about 20 inches thick. The underlying material is brown extremely channery sandy clay loam about 24 inches thick. Sandstone is at a depth of 52 inches. Included with this soil in mapping are small areas of Parachute and Northwater soils. The moderately deep Parachute soils are on smooth ridge crests and west - and south -facing side slopes. The Northwater soils are on north -facing side slopes. These areas make up about 10 to 15 percent of the map unit. Permeability is moderate, and available water capacity is moderate. Effective rooting depth is 40 to 60 inches. Surface runoff is slow, and the erosion hazard is slight. This soil is used mainly for wildlife habitat and limited grazing. The native vegetation is mainly brome, needtegrass, and sagebrush. There are small areas of dwarfed aspen, but they are of little or no commercial value. When range condition deteriorates, forbs, shrubs, and Kentucky bluegrass increase. Properly managing grazing maintains and improves range condition. Seeding and removing brush improve range on less sloping areas if it is in poor condition. Intermediate wheatgrass, slender wheatgrass, and mountain or smooth brome are suitable for seeding. Preparing the seedbed and drilling the seed are good practices. Elk, mule deer, coyote, grouse, and rabbit find habitat on this soil. Use of this soil for community development or as a source of construction material is limited by steep slopes. RIFLE AREA, COLORADO 37 66—Torriorthents-Camborthids-Rock outcrop com- plex, steep. This broadly defined unit consists of ex- posed sandstone and shale bedrock, loose stones, and soils that are shallow to deep over sandstone and shale bedrock and stony basaltic alluvium. This complex occurs throughout the survey area. The soils and out- crops are moderately steep to very steep. Slope ranges from 15 to 70 percent. Torriorthents make up about 45 percent of the com- plex, Camborthids make up 20 percent, and Rock out- crop makes up 15 percent. The Torriorthents are on foothills and mountainsides below Rock outcrop. The moderately steep Camborthids are on lower toe slopes and concave open areas on foothills and mountainsides. Torriorthents are shallow to moderately deep. They are generally clayey to loamy and contain variable amounts of gravel, cobbles, and stones. The surface is normally covered with stones weathered from the higher - lying Rock outcrop. South of the Colorado River, basaltic stones and cobbles are on the surface. Camborthids are shallow to deep. They are generally clayey to loamy and have slightly more clay in the sub- soil than in the surface layer. The surface layer is light colored. The profile is normally free of stones, but scat- tered basalt stones, cobbles, and sandstone fragments are on the surface. The Rock outcrop is mainly Mesa Verde sandstone and Wasatch shale. Some areas are covered with basal- tic boulders and stones. Small areas of limestone out- crops and exposed gypsum are in the eastern part of the survey area. Included in mapping are small, isolated areas of Ilde- fonso, Lazear, Ansari, Begay, Heldt, and Dollard soils. These intermittent areas make up 10 to 20 percent of this map unit. This complex is used for grazing, wildlife habitat, and recreation. The stones on the surface and the steep slopes make this complex unsuitable for crops. Some areas can be reseeded to pasture by broadcast seeding. Other plant- ing methods are made difficult by the stones and slopes. The native vegetation includes wheatgrasses, blue - grasses, Indian ricegrass, needlegrasses, bitterbrush, mountainmahogany, sagebrush, and an overstory of pinyon and juniper. The value of grazing is fair. The vegetation should be managed to maintain wood production and limited graz- ing. Selectively thinning the pinyon and juniper improves grazing and provides firewood and posts. Steep slopes, moderate to severe erosion hazard, and slow regrowth of trees affect harvesting and management. Most of this complex is a prime wintering area for deer. Rabbits, coyote, and a few elk also find food and cover on this complex. Building is limited by steep slopes and stoniness. These limitations can he overcome by appropriate design and construction. This complex is in capability subclass Vile, nonirrigat- ed. 67—Torrlorthents-Rock outcrop complex, steep. This broadly defined unit consists of exposed sandstone and shale bedrock and stony soils that are shallow to moderately deep over sandstone and shale and stony basaltic alluvium. Areas of this complex occur throughout the survey area. The soils and outcrops are moderately steep to very steep. Slope ranges from 15 to 70 percent. Torriorthents make up about 60 percent of this com- plex, and Rock outcrop makes up 25 percent. The Tor- riorthents are on foothills and mountainsides below the Rock outcrop. Torriorthents are generally clayey to loamy and con- tain variable amounts of gravel, cobbles, and stones. The surface is normally covered with stones weathered from the higher -lying Rock outcrop. South of the Colora- do River, stones and cobbles of basalt are on the sur- face. The Rock outcrop is mainly Mesa Verde sandstone and Wasatch shale. Some areas are covered with basal- tic boulders and stones. Small areas of limestone out- crops and exposed gypsum are in the eastern part of the survey area. Included in mapping are small isolated areas of Ilde- fonso, Lazear, Ansari, Gaynor, Tridell, and Nihill soils. These intermittent areas make up 10 to 15 percent of this map unit. This complex is used for limited grazing, wildlife habi- tat, and recreation. Because of the stones on the surface, the Rock out- crop, and the steep slope, this complex is unsuited to crops. The native vegetation includes wheatgrass, bluegrass, Indian ricegrass, needlegrass, bitterbrush, sagebrush, mountainmahogany and an overstory of pinyon and juni- per. The vegetation should be managed to maintain wood production and limited grazing. Selectively thinning the pinyon and juniper improves grazing and provides fire- wood and posts. Steep slopes, moderate to severe ero- sion hazard, and slow regrowth of trees affect harvesting and management. Most of this complex is a prime wintering area for deer. Rabbits, coyote, and a few elk also find food and cover on this complex. Community development is limited by the Rock out- crop, steep slopes, and stoniness. These limitations can be overcome by appropriate design and construction. This complex is in capability subclass Vile, nonirrigat- ed. 68—Vale silt loam, 3 to 6 percent slopes. This deep, well drained, gently sloping soil is on mesas, terraces, and alluvial fans. Elevation ranges from 5,000 to 7,200 feet. This soil formed in calcareous eolian material. The SMOG CREW INA CO LLC OANFIELD COUNTY. CO.O ADO C®M Fll9 RANCH MANAGE DES ,AN N9, DAR REVISOR 10U1/ODIR1111! N0R= NC ��iyuBgp0p0O�'S�1pA`�I{M�l� F11O'ROO oe tO70/ neat CR. 1PB DAR 0/10/00 FRE: MCB/S