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Home My WebLink About991683.tiff WE LD COUNTY, COLORADO, SOUTHERN PART 27 Typically the surface layer is light brownish gray fine establish. This soil, however, does have good potential for sandy loam about 8 inches thick. The underlying material such recreational development as camp and picnic areas is light olive brown fine sandy loam. Soft sandstone is at and playgrounds. Capability subclass I'Ve irrigated, Vie a depth of about 28 inches. nonirrigated; Sandy Plains range site. Permeability is moderately rapid. Available water 39—Nunn loam, 0 to 1 percent slopes. This is a deep, capacity is moderate. The effective rooting depth is 20 to well drained soil on terraces at elevations of 4,550 to 5,000 40 inches. Surface runoff is medium to rapid, and the ero- feet. it formed in mixed alluvium. Included in mapping sion hazard is moderate. are small, long and narrow areas of sand and gravel This soil is suited to limited cropping. Intensive deposits and small areas of soil that are subject to occa- cropping is hazardous because of erosion. The cropping sional flooding. Some small leveled areas are also in- system should be limited to such close grown crops as al- eluded. falfa, wheat, and barley. This soil is also suited to ir- Typically the surface layer of this Nunn soil is grayish rigated pasture. A suitable cropping system is 3 to 4 brown loam about 12 inches thick. The subsoil is light years of alfalfa followed by 2 years of corn and small brownish gray clay loam about 12 inches thick. The upper grain and alfalfa seeded with a nurse crop. part of the substratum is light brownish gray clay loam. Close grown crops can be irrigated from closely spaced The lower part to a depth of 60 inches is brown sandy contour ditches or sprinklers. Contour furrows or sprin- loam. klers should be used for new crops. Applications of Permeability is moderately slow. Available water nitrogen and phosphorus help in maintaining good produc- capacity is high. The effective rooting depth is 60 inches tion. or more. Surface runoff is slow, and the erosion hazard is The potential native vegetation on this range site is low, dominated by sand bluestem, sand reedgrass, and blue This soil is used almost entirely for irrigated crops. It grama. Needleandthread, switchgrass, sideoats grama, is suited to all crops commonly grown in the area, includ- and western wheatgrass are also prominent. Potential ing corn, sugar beets, beans, alfalfa, small grain, potatoes, production ranges from 2,200 pounds per acre in favora- and onions. An example of a suitable cropping system is 3 ble years to 1,800 pounds in unfavorable years. As range to 4 years of alfalfa followed by corn, corn for silage, condition deteriorates, the sand bluestem, sand reedgrass, sugar beets, small grain, or beans. Few conservation prac- and switchgrass decrease and blue grama, sand dropseed, rid sand sage increase. Annual weeds and grasses invade tices are needed to maintain top yields. the site as range condition becomes poorer. All methods of irrigation are suitable, but furrow ir- Management of vegetation on this soil should be based fertilizer are needed for top yields. rigation is the most common. Barnyard manure and com- mercial on taking half and leaving half of the total annual produc- tion. Seeding is desirable if the range is in poor condition. Windbreaks and environmental plantings of trees and Sand bluestem, sand reedgrass, switchgrass, sideoats shrubs commonly grown in the area are generally well suited to this soil. Cultivation to control competing grama, blue grama, pubescent wheatgrass, and crested wheatgrass are suitable for seeding. The grass selected vegetation should be continued for as many years as possible following planting. Trees that are best suited and should meet the seasonal requirements of livestock. It can be seeded into a clean, firm sorghum stubble, or it can be have good survival are Rocky Mountain juniper, eastern redcedar, ponderosa pine, Siberian elm, Russian-olive, and drilled into a firm prepared seedbed. Seeding early in hackberry. The shrubs best suited are skunkbush, lilac, spring has proven most successful. Windbreaks and environmental plantings are generally Siberian peashrub, and American plum. not suited. Onsite investigation is needed to determine if Wildlife is an important secondary use of this soil. The plantings are feasible. cropland areas provide favorable habitat for ring-necked Wildlife is an important secondary use of this soil. The pheasant and mourning dove. Many nongame species can cropland areas provide wildlife habitat for ring-necked be attracted by establishing areas for nesting and escape pheasant and mourning dove. Many nongame species can cover. For pheasants, undisturbed nesting cover is essen- be attracted by establishing areas for nesting and escape tial and should be included in plans for habitat develop- cover. For pheasants, undisturbed nesting cover is essen- ment, especially in areas of intensive agriculture. tial and should be included in plans for habitat develop- This soil has fair to poor potential for urban develop- ment, especially in areas of intensive agriculture. Range- ment. It has moderate to high shrink swell, low strength, land wildlife, for example, the pronghorn antelope, can he and moderately slow permeability. These features create attracted by developing livestock watering facilities, problems in dwelling and road construction. Those areas managing livestock grazing, and reseeding where needed. that have loam or sandy loam in the lower part of the The underlying sandstone is the most limiting feature substratum are suitable for septic tank absorption fields of this soil. Neither septic tank absorption fields nor and foundations. Some areas are adjacent to streams and -ewage lagoons operate properly. Site preparation for are subject to occasional flooding. This soil has fair poten- ,wellings is more costly. Environmental and beautifica- tial for such recreational development as camp and picnic tion plantings of trees and shrubs may be difficult to areas and playgrounds. Capability class I i riu tnd EXHIBIT 991683 1 WELD COUNTY, COLORADO, SOUTHERN PART 23 Windbreaks and environmental plantings of trees and The potential native vegetation is dominated by blue shrubs commonly grown in the area are generally well grama. Several mid grasses, such as western wheatgrass suited to this soil. Cultivation to control competing and needleandthread, are also present. Potential produc- vegetation should be continued for as many years as tion ranges from 1,600 pounds per acre in favorable years possible following planting. Trees that are best suited and to 1,000 pounds in unfavorable years. As range condition 4 have good survival are Rocky Mountain juniper, eastern deteriorates, the mid grasses decrease; blue grama, buf- 1 redcedar, ponderosa pine, Siberian elm, Russian-olive, and falograss, snakeweed, yucca, and fringed sage increase; hackberry. The shrubs best suited are skunkbush sumac, and forage production drops. Undesirable weeds and an- Siberian peashrub, lilac, and American plum. nuals invade the site as range condition becomes poorer. Wildlife is an important secondary use of this soil. The Management of vegetation on this soil should be based cropland areas provide favorable habitat for ring-necked on taking half and leaving half of the total annual produc- pheasant and mourning dove. Many nongame species can tion. Seeding is desirable if the range is in poor condition. be attracted by establishing areas for nesting and escape Sideoats grama, little bluestem, western wheatgrass, blue cover. For pheasants, undisturbed nesting cover is essen- grama, pubescent wheatgrass, and crested wheatgrass are tial and should be included in plans for habitat develop- suitable for seeding. The grass selected should meet the ment, especially in areas of intensive agriculture. seasonal requirements of livestock. It can be seeded into This soil has good potential for urban and recreational a clean, firm sorghum stubble, or it can be drilled into a development. Increased population growth in the survey firm prepared seedbed. Seeding early in spring has area has resulted in increased homesite construction. The proven most successful. chief limiting feature for urban development and road Windbreaks and environmental plantings of trees and construction is the limited capacity of the soil to support shrubs commonly grown in the area are generally well a load. Septic tank absorption fields function properly, but suited to this soil. Cultivation to control competing community sewage systems should be provided if the vegetation should be continued for as many years as population density increases. Because of the permeability possible following planting. Trees that are best suited and have good survival are Rocky Mountain juniper, eastern of the substratum, sewage lagoons must be sealed. redcedar, ponderosa pine, Siberian elm, Russian-olive, and Lawns, shrubs, and trees grow well. Capability class I ir- hackberry. The shrubs best suited are. skunkbush sumac, lilac, Siberian peashrub, and American plum. 32 Kim loam, 1 to 3 percent slopes. This is a deep, Wildlife is an important secondary use of this soil. The drained soil on smooth plains and alluvial fans at elevations of 4,900 to 5,250 feet. It formed in mixed eolian cropland areas provide favorable habitat for ring-necked pheasant and mourning dove. Many nongame species can deposit and parent sediment from a wide variety of be attracted by establishing areas for nesting and escape bedrock. Included in mapping are small areas of soils that have loamy sand underlying material. cover.. For pheasants, undisturbed nesting cover is essen- teal and should be included in plans for habitat develop- Typically the surface layer is brown and pale brown ment, especially in areas of intensive agriculture. Range- loam about 12 inches thick. The upper 28 inches of the un- land wildlife, for example, the pronghorn antelope, can be derlying material is pale brown loam. The lower part to a attracted by developing livestock watering facilities, depth of 60 inches is pale brown fine sandy loam. managing livestock grazing, and reseeding where needed. Permeability is moderate. Available water capacity is This soil has good potential for urban and recreational high. The effective rooting depth is 60 inches or more. development. Increased population growth in the survey Surface runoff is medium, and the erosion hazard is low. area has resulted in increased homesite construction. The In irrigated areas this soil is suited to all crops com- chief limiting soil feature for urban development and road monly grown in the area, including corn, sugar beets, construction is the limited capacity of this soil to support beans, alfalfa, small grain, potatoes, and onions. An exam- a load. Septic tank absorption fields function properly, but ple of a suitable cropping system is 3 to 4 years of alfalfa community sewage systems should be provided if the followed by corn, corn for silage, sugar beets, small grain, population density increases. Because of the permeability or beans. Land leveling, ditch lining (fig. 6), and installing of the substratum, sewage lagoons must be sealed. pipelines may be needed for proper water applications. Lawns, shrubs, and trees grow well. Capability subclass All methods of irrigation are suitable, but furrow ir- Ile irrigated, IVe nonirrigated; Loamy Plains range site. rigation is the most common. Barnyard manure and com- 33--Kim loam, 3 to 5 percent slopes. This is a deep, mercial fertilizer are needed for top yields. well drained soil on plains and alluvial fans at elevations In nonirrigated areas this soil is suited to winter wheat, of 4,900 to 5,250 feet. It formed in mixed eolian deposits barley, and sorghum. Most of the acreage is planted to and parent sediment from a wide variety of bedrock. In- winter wheat and is summer fallowed in alternate years eluded in mapping are small areas of soils that have to allow moisture accumulation. Generally precipitation is loamy sand underlying material. too low for beneficial use of fertilizer. Typically the surface layer is brown and pale brown Stubble mulch farming, striperopping, and minimum til- loam about 10 inches thick. The upper 28 inches of the un- lage are needed to control soil blowing and water erosion. derlying material is pale brown loam. The lower part to a Terracing also may be needed to control water erosion. depth of 60 inches is pale brown fine sandy loam. z RVEY WELD COUNTY, COLORAI plication of barnyard manure and commercial fertilizer. Ker 'g tillage to a minimum and utilizing crop residue Typically the surface layer is light brownish gray fine i are ....portant. sandy loam about 8 inches thick. The underlying material , In nonirrigated areas this soil is suited to winter wheat, is light olive brown fine sandy loam. Soft sandstone is at barley, and sorghum. Most of the acreage is planted to a depth of about 28 inches. winter wheat and is summer fallowed in alternate years Permeability is moderately rapid. Available water to allow moisture accumulation. Generally precipitation is capacity is moderate. The effective rooting depth is 20 to • too low for beneficial use of fertilizer. 40 inches. Surface runoff is medium to rapid, and the ero- 1 Stubble mulch fanning, striperopping, and minimum til- sion hazard is moderate. • lage are needed to control soil blowing and water erosion. This soil is suited to limited cropping. Intensive , The potential native vegetation on this range site is cropping is hazardous because of erosion. The cropping dominated by sand bluestem, sand reedgrass, and blue system should be limited to such close grown crops as al- , grama. Needleandthread, switchgrass, sideoats grama, falfa, wheat, and barley. This soil is also suited to ir- and western wheatgrass are also prominent. Potential rigated pasture. A suitable cropping system is 3 to 4 production ranges from 2,200 pounds per acre in favora- years of alfalfa followed by 2 years of corn and small ble years to 1,800 pounds in unfavorable years. As range grain and alfalfa seeded with a nurse crop. condition deteriorates, the sand bluestem, sand reedgrass, Close grown crops can be irrigated from closely spaced and switchgrass decrease and blue grama, sand dropseed, contour ditches or sprinklers. Contour furrows or sprin- and sand sage increase. Annual weeds and grasses invade klers should be used for new crops. Applications of the site as range condition becomes poorer. nitrogen and phosphorus help in maintaining good produc- Management of vegetation on this soil should he based tion. on taking half and leaving half of the total annual produc- The potential native vegetation on this range site is tion. Seeding is desirable if the range is in poor condition. dominated by sand bluestem, sand reedgrass, and blue Sand bluestem, sand reedgrass, switchgrass, sideoats grama. Needleandthread, switchgrass, sideoats grama, grama, blue grama, pubescent wheatgrass, and crested and western wheatgrass are also prominent. Potential wheatgrass are suitable for seeding. The grass selected production ranges from 2,200 pounds per acre in favora- should meet the seasonal requirements of livestock. It can ble years to 1,800 pounds in unfavorable years. As range be seeded into a clean, firm sorghum stubble, or it can be condition deteriorates, the sand bluestem, sand reedgrass, drilled into a firm prepared seedbed. Seeding early in and switchgrass decrease and blue grama, sand dropseed, sp. ;has proven most successful. and sand sage increase. Annual weeds and grasses invade Windbreak and environmental plantings are generally the site as range condition becomes poorer. not suited to this soil. Onsite investigation is needed to Management of vegetation on this soil should be based determine if plantings are feasible. on taking half and leaving half of the total annual produc- Wildlife is an important secondary use of this soil. The tion. Seeding is desirable if the range is in poor condition. cropland areas provide favorable habitat for ring-necked Sand bluestem, sand reedgrass, switchgrass, sideoats pheasant and mourning dove. Many nongame species can grama, blue grama, pubescent wheatgrass, and crested be developed by establishing areas for nesting and escape wheatgrass are suitable for seeding. The grass selected cover. For pheasants, undisturbed nesting cover is essen- should meet the seasonal requirements of livestock. It can tial and should be included in plans for habitat develop- be seeded into a clean, firm sorghum stubble, or it can be ment, especially in areas of intensive agriculture. Range- drilled into a firm prepared seedbed. Seeding early in land wildlife, for example, the pronghorn antelope, can be spring has proven most successful. attracted by developing livestock watering facilities, Windbreaks and environmental plantings are generally managing livestock grazing, and reseeding where needed. not suited. Onsite investigation its needed to determine if The underlying sandstone is the most limiting feature plantings are feasible. of this soil. Neither septic tank absorption fields nor Wildlife is an important secondary use of this soil. The sewage lagoons operate properly. Site preparation for cropland areas provide wildlife habitat for ring-necked dwellings is more costly. Environmental and beautifica- pheasant and mourning dove. Many nongame species can tion plantings of trees and shrubs may be difficult to be attracted by establishing areas for nesting and escape establish. This soil, however, does have good potential for cover. For pheasants, undisturbed nesting cover is essen- such recreational development as camp and picnic areas tial and should be included in plans for habitat develop- and playgrounds. Capability subclass Ills irrigated, IVe ment, especially in areas of intensive agriculture. Range- n n 'Igigated; Sandy Plains range site. land wildlife, for example, the pronghorn antelope, can be 38 Nelson fine sandy loam, 3 to 9 percent slopes. attracted by developing livestock watering facilities, i s a moderately deep, well drained soil on plains at managing livestock grazing, and reseeding where needed. elevations of 4,800 to 5,050 feet. It formed in residuum The underlying sandstone is the most limiting feature derived from soft sandstone. Included in mapping are of this soil. Neither septic tank absorption fields nor sr areas of soils that have sandstone at a depth of sewage lagoons operate properly. Site preparation for m.._a than 40 inches. dwellings is more costly. Environmental and beautifica- tion plantings of trees and shrubs may be difficult to WELD COUNTY, COLORADO, SOUTHERN PART 105 t TABLE 7.--SANITARY FACILITIES--Continued 1 Soil name and Septic tank Sewage lagoon Trench Area I Daily cover map symbol absorption areas sanitary sanitary for landfill fields landfill I landfill 21 , 22 Severe: Severe: Severe: (Slight Fair: Dacono percs slowly. seepage. seepage. I too clayey. . 23 Moderate: Moderate: Slight ;Slight ----;Good. Fort Collins percs slowly. seepage. 24 Moderate: Moderate: Slight ;Slight -----;Good. Fort Collins percs slowly. seepage, slope. 25, 26 Severe: Severe: Severe: Severe: ;Good. Haverson floods. floods. floods. floods. 27, 28 Severe: Moderate: Severe: Slight '----IPoor: Heldt percs slowly. slope. too clayey. ' too clayey. 29, 30 Slight Severe: Severe: Severe: Good. Julesburg seepage. seepage. seepage. 31 Slight Moderate: Slight Slight .---- Good. Kim seepage. 32, 33 Slight Moderate: Slight Slight ---- Good. Kim seepage, slope. 34 Slight Severe: Slight Slight •---- Good. Kim slope. 35*: Loup Severe: Severe: Severe: Severe: Poor: wetness, wetness, wetness, wetness, wetness. floods. seepage, floods, ; floods, floods. seepage. i seepage. Boel Severe: Severe: :Severe: :Severe: Poor: wetness, wetness, I wetness, I wetness, too sandy. floods. seepage, I floods, I floods. floods. ; seepage. 1 36*: Midway Severe: Severe: :Severe: :Moderate: Poor: percs slowly, depth to rock, ; depth to rock, ; slope. too clayey, depth to rock. slope. I too clayey. thin layer. Shingle Severe: Severe: :Severe: :Moderate: Severe: depth to rock. slope, I depth to rock. ' slope. thin layer. depth to rock. 37, 38 Severe: Severe: :Severe: Severe: Fair: Nelson depth to rock. depth to rock, I depth to rock, seepage. thin layer. seepage. I seepage. 39 Severe: Moderate: :Slight Slight Fair: Nunn percs slowly. excess humus. too clayey. I. 40 Severe: Moderate: ;Slight Slight Fair: Nunn percs slowly. excess humus, I too clayey. slope. 41 Severe: Moderate: 'Slight Slight Fair: Nunn percs slowly. excess humus. too clayey. 42 Severe: Moderate: Slight Slight Fair: Nunn percs slowly. excess humus, too clayey. slope. See footnote at end of table. WELD COUNTY, COLORADO, SOUTHERN PART 101 TABLE 6.--BUTLDING SITE DEVELOPMENT--Continued -T -r- Soil name and Shallow Dwellings Dwellings Small Local roads map symbol excavations without with commercial and streets basements basements huildigs 19 Moderate: Severe: Severe: Severe: Severe: Colombo floods. floods. floods. floods. floods. 20 Slight Moderate: Moderate: Moderate: Moderate: Colombo low strength. low strength. low strength. low strength, frost action. 21 , 22 Severe: Moderate: Slight Moderate: Severe: Dacono cutbanks cave. low strength, low strength, shrink-swell, shrink-swell. shrink-swell. low strength. 23, 24 Slight Moderate: Moderate: Moderate: Moderate: 1 Fort Collins low strength. low strength, low strength. low strength. 1 shrink-swell. d25, 26 Severe: Severe: Severe: Severe: Severe: Haverson floods. floods. floods. floods. I floods. 27, 28 Severe: Severe: Severe: Severe: Severe: Veldt too clayey. shrink-swell , shrink-swell, shrink-swell, shrink-swell, low strength. low strength. low strength. low strength. 29, 30 Slight Moderate: Moderate: Moderate: Moderate: Julesburg low strength. low strength. low strength. low strength, frost. action. 31 , 32 Slight Moderate: Moderate: Moderate: Moderate: Kim low strength. low strength. low strength. low strength. 33, 34 Slight Moderate: Moderate: Moderate: Moderate: Kim low strength. low strength. low strength, low strength. slope. • 35": Loup :Severe: Severe: Severe: Severe: Severe: 1 wetness, wetness, wetness, wetness, wetness. : cutbanks cave. floods. floods. floods. Boel :Severe: Severe: Severe: Severe: Severe: 1 wetness, wetness, wetness, wetness, wetness, : floods, floods. floods. floods. floods. I cutbanks cave. 36": Midway :Severe: Severe: Severe: Severe: Severe: too clayey. shrink-swell, shrink-swell, slope, shrink-swell, low strength. low strength. shrink-swell , low strength. low strength. : Shingle :Severe: Severe: Severe: Severe: Severe: depth to rock. depth to rock. depth to rock. depth to rock, depth to rock. slope. 37 :Severe: Moderate: Severe: Moderate: Moderate: Nelson 1 depth to rock. depth to rock, depth to rock. depth to rock, depth to rock, low strength. low strength. low strength. • 38 :Severe: Moderate: Severe: Moderate: Moderate: Nelson 1 depth to rock. depth to rock, depth to rock. slope, depth to rock, • low strength. depth to rock, low strength. low strength. 39, 40, 41 , 42, 43 :Moderate: Severe: Severe: Severe: Severe: Nunn : too clayey. shrink-swell, shrink-swell, shrink-swell , shrink-swell, • low strength. low strength. low strength. low strength. See footnote at end of table. 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