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Home My WebLink About970382.tiff AACKLAM AA SSOCIATES, INC. SURVEYING-ENGINEERING Soils classification for Airpark P.U.D. in Sections 30 and 31, Township 2 North, Range 65 West of the 6th Principial Meridian. ,..s a ' W.C.R. 18 ---- N. ; I� t , --� i Ski, 3 F ix .+ a<424. -...)&712'7' :� 13 N �,, \\\ { `-max.:: 31 .: 4. ','� is r`F'S 5V S� t,. . �J fi � � W SITE a , • t ^ t J `f I -� � g � �Ir.,�.- , Y • y,, ,..,'" ;: r '?..-„.11.1,.i.,,'„,',f 4, SF"-i 'z7"'t r, 89 . t 4.l'iS,-1 'i; ". .+ `'`- 1$} t' .- . r�,:�3,.•r 'Y 1 r. iic. i' �Y`L—r% '� 57-4.,"'--$:.--e r ;i��-t^�t . y:� � �1� 'P �S11'.Se ftS �`4 rimh y � r ye��' .x y.,. �¢' 1 4 i 2,4 �, ₹ _ +tx a i,.. \ -.w., - -- a '. w {` M \ a: q r r �x , �- yy�_ i ter ry y, .i4 S ,. ..,r?. .5 '\ -24;;;;,..--A.::,-71,. l s itiii ... �t '* ae . tt +� *w .42- ' .> 4 I ' ,' ,..t."-,... 4,. .o \ ` < \ �\ dam .. ra ..;4s;a a. . s i s" : 3:;i ,J 'd ! T I i1. 4�yI.1)7 9 } S4 l ti� ,,:,,..-,%•—.- At yr le y� \, .-y i•-• T k m Y ,t?G. t3 F•� '77 i xb ' y, . �rw: fit''' .lp5 ,.... -_`�.. - as �,-71711P.,.‘,,`" ";, . ; i i }• 25 a�, 44 - Olney fine sandy scam. 1 to 3 percent slopes - 4 r 4� i . . k , z »s1'r" •45 Olney fine sandy loam, 3 to percent slopes ri e e`ab� 69 Valent sand, 0 to 3 percent slopes + to �� '' •° 70 - Valent sand, 3 to 9, percent slopes f u �t ', a; v i cr r,,. t "`"' ` Ci r . HIGHWAY 52 tp ).! rT F\� 4 1 �+ ..a�.C+ �® t.' y, ate. . 5. ."+�4 act-#y�i�iti a o+d r3, ,,,,,:.,2,.,.; „....1.---t., -)C\t '7,° i .+r r.c-: 4 x x4i�`FA'Att �y# Fr »wn � 70\ 3�' r % a�4,.� R'� )r I :: ��';a'.'.H �.:.75J: - "-4 tip a. a 'n r=, ,.ryN=K _. � Y.'.: '7.,;..,!).6); EXHIBIT I /O 1001 E. BRIDGE ST T. P.O. •BRIGHTON, TELEPHONEBOX795(303)659-8546 970382 Olney series The Olney series consists of deep, well drained soils that formed in alluvium. Olney soils are on plains. Slopes are 0 to 5 percent. Olney soils are similar to the Fort Collins and Vona soils and are near the Kim, Nelson, Otero, and Thedaiund soils. Fort Collins soils are less than 35 percent fine and coarser sand in the B horizon. Vona soils are less than 18 percent clay in the B horizon. Nelson and Thedalund soils have sandstone and shale between 20 and 40 inches. Typical pedon of Olney fine sandy loam, 0 to 1 percent slopes, 1,320 feet north and 284 feet east of southwest corner sec. 28, T. 6 N., R. 66 W. Ap—O co 10 inches: grayish brown (10YR 5,2) fine sandy icam, dark grayish brown -(10YR 42) moist: weak fine granular structure: slightly hard. very friable: noncalcireous: mildly alkaline; abrupt smooch boundary. B2:-10 to 20 inches: yellowish brown (10YR 5/4) sandy clay loam, dark yellowish brown (10YR 4/4) moist; moderate medium prismatic structure parting to moderate fine subangular blocky; hard. friable; common moderately thick clay films on faces of peels; noncalcareous; mildly alkaline: clear wavy boundary. B3cr-20 co 25 inches: very pale brown (10YR 7/3) sandy clay loam, brown (10YR 5/3) moist: moderate coarse prismatic structure; slightly hard, very friable: some visible lime occuring in fine to medium seams and soft masses; calcareous; moderately alkaline; gradual smooth boundary. Cca-25 to 60 inches: yen' pale brown (IOYR 7;3) fine sandy loam, pale brown (10YR 6/3) moist: weak coarse subangular 'olocky structure: slightly hard, very friable; some visible lime in fine to medium threads and seams: calcareous; moderately alkaline. Thiclmess of the soium ranges from 17 to 30 inches. Coarse fragments make up as much as 15 percent of the solum. Depth to free carbonates ranges from 10 to 24 inches. The A horizon has hue of 10YR or 2.5Y, value of 5 or 6 dry and 3 to 5 moist, and chroma of 2 or 3. It is fine sandy loam or loamy sand. The B2t horizon is commonly sandy clay loam, but clay content ranges from 18 to 30 percent. Valent series The Valent series consists of deep, excessively drained soils that formed in eolian deposits. Valent soils are on plains. Slopes are 0 to 9 percent. Valent soils are near the Loup, Boel, Osgood, and Vona soils. Loup and Boel soils are poorly drained. Osgood and Vona soils have a B horizon. Typical pedon of Valent sand, 0 to 3 percent slopes, 2,220 feet north and 132 feet west of southeast corner sec. 8, T. 4 N., R. 62 W. Al-0 to 8 inches; brown (10YR 513) sand, dark grayish brown (10YR 4/2)moist; single grained; loose; neutral; clear smooth boundary. CI—Sto 60 inches; brown (10YR 5/3) sand, dark grayish brown (10YR 4/2) moist; single grained: loose; neutral. Coarse fragments make up 0 to 10 percent of the soiam and are mainly scattered gravel. Depth to free carbonates is more than 40 inches. The A horizon has hue of 10YR and 2.5Y. value of 5 or 6 dry and 3 to 5 moist,and chroma of 2 or 3. 970382 44—Olney loamy sand, I to 3 percent slopes. This is a deep, well drained soil on smooth plains at elevations of Windbreaks and environmental plantings are generally 4,600 to 5,200 feet. It formed in mixed outwash deposits. suited to this soil. Soil blowing, the principal hazard in Included in mapping are some small leveled areas. establishing trees and shrubs, can be controlled by cul- Typically the surface layer is grayish brown loamy sand tivating only in the tree row and by leaving a strip of about 9 inches thick. The subsoil is yellowish brown and vegetation between the rows. Supplemental irrigatior. very pale brown sandy clay loam about 15 inches thick. may be needed at the time of planting and during dry The substratum to a depth of 60 inches is very pale periods. Trees that are best suited and have good sun'iva: brown, calcareous fine sandy loam. are Rocky Mountain juniper, eastern redcedar, ponderosa Permeability and available water capacity are pine, Siberian elm, Russian-olive, and hackberry. The moderate. The effective rooting depth is 60 inches or shrubs best suited are skunkbush sumac, lilac, and Siberi- more. Surface runoff is slow, and the erosion hazard is an peashrub. low. Wildlife is an important secondary use of this soil. The In irrigated areas this soil is suited to the crops corn- cropland areas provide favorable habitat for ring-necked monly grown in the area. Perennial grasses and alfalfa or pheasant and mourning dove. Many nongame species car close grown crops should be grown at least 50 percent of be attracted by establishing areas for nesting and escape the time. Contour ditches and corrugations can be used in cover. For pheasants, undisturbed nesting cover is essen- irrigating crops and pasture. Furrows, contour furrows, tial and should be included in plans for habitat develop- and cross slope furrows are suitable for row crops. Sprin- ment, especially in areas of intensive agriculture. Range- kler irrigation is also desirable. Keeping tillage to a land wildlife, for example,.the pronghorn antelope. can be minimum and utilizing crop residue help to control ero- attracted by developing livestock watering facilities. sion. Maintaining fertility is important. Crops respond to managing livestock grazing and reseeding where needed. applications of phosphorus and nitrogen. This soil has good potential for urban development. The In nonirrigated areas this soil is suited to winter wheat. only limiting feature is the moderately rapid permeability barley, and sorghum. Most of the the acreage is planted in the substratum, which causes a hazard of ground water to winter wheat. The predicted average yield is 20 contamination from sewage lagoons. The loamy sand sur- bushels per acre. The soil is usually summer fallowed ir. face layer is a limitation for recreational development. alternate years to allow moisture accumulation. Generally Once established, the lawns. shrubs, and trees grow well. precipitation is too low for beneficial use of fertilizer. Capability subclass IIle irrigated, IVe nonirrigated; _ Stubble mulch farming. striperopning, and minimum til- Sandy Plains range site. lave are needed to control soil blowing and water erosion. Terracing also may be needed to control water erosion. The potential native vegetation on this range site is dominated by sand bluestem. sand reedgrass, and blue grama. Needleandthread. switchgrass, sideoats grama. and western wheatgrass are also prominent. Potential production ranges from 2.200 pounds per acre in favora- ble years to 1,800 pounds in unfavorable years. As range condition deteriorates. the sand bluestem. sand reedgrass, and switchgrass decrease and blue grama, sand dropseed, and sand sage increase. Annual weeds and grasses invade the site as range condition becomes poorer. Management of vegetation on this soil should be based on taking half and leaving half of the total annual produc- tion. Seeding is desirable if the range is in poor condition. Sand bluestem, sand reedgrass, switchgrass, sideoats grama, blue grama, pubescent wheatgrass, and crested wheatgrass are suitable for seeding. The grass selected should meet the seasonal requirements of livestock. It can be seeded into 2 clean, firm sorghum stubble, or it can be drilled into a firm prepared seedbed. Seeding early in spring has proven most successful. 9! 0352 45—Olney loamy sand, 3 to 5 percent slopes. This is a deep, well drained soil on plains at elevations of 4,600 to establishing trees and shrubs, can be controlled by cul- 5.200 feet. It formed in mixed outwash deposits. Included tivating only in the tree row and by leaving a strip of in mapping are small areas of soils that have sandstone vegetation between the rows. Supplemental irrigation and shale within a depth of 60 inches and some small may be needed at the time of planting and during dry leveled areas. periods. Trees that are best suited and have good survival Typically the surface layer of this Olney soil is grayish are Rocky Mountain juniper, eastern redcedar, ponderosa brown loamy sand about 7 inches thick. The subsoil is yel- pine, Siberian elm, Russian-olive, and hackberry. The lowish brown and very pale brown sandy clay loam about shrubs best suited are skunk-bush sumac, lilac, and Siberi- 14 inches thick. The substratum to a depth of 60 inches is an peashrub. very pale brown, calcareous fine sandy loam. Wildlife is an important secondary use of this soil. The Permeability and available water capacity are cropland areas provide favorable habitat for ring-necked moderate. The effective rooting depth is 60 inches or pheasant and mourning dove. Many nongame species can more. Surface runoff is slow, and the erosion ha7nrd if be attracted by establishing areas for nesting and escape low. cover. For pheasants, undisturbed nesting cover is essen- In irrigated areas this soil is suited to the crops coin- tial and should be included in plans for habitat develop- monh' grown in the area. Perennial grasses and alfalfa or ment, especially in areas of intensive agriculture. Range- close grown crops should be grown at least 50 percent of land wildlife, for example, the pronghorn antelope, can be the time. Close grown crops and pasture can oe irrigated attracted by developing livestock watering facilities, with contour ditches and corrugations. Furrows. contour managing livestock grazing, and reseeding where needed. furrows, and cross slope furrows are suitable for row This soil has good potential for urban development. The crops. Sprinkler imgation is also desirable. keeping tii- only limiting feature is the moderately rapid permeability 'age to a minimum and utilizing crop residue help to con- in the substratum, which causes a hazard of ground water trol erosion. Maintaining fertility and organic matter con- contamination from sewage lagoons. The loamy sand sur- tent is important. Crops respond to barnyard manure and face layer is a limitation for recreational development. commercial fertilizer. Once established, the lawns. shrubs, and trees grow well. The potential native vegetation on this range site is Capability subclass IIIe irrigated. VI nonirrigated: Sandy dominated by sand bluestem, sand reedgrass. and blue Plains range site. grama. Seedleandthread. switchgrass. sideoats grama. and western wheatgrass are also prominent. Potential production ranges from 2.200 pounds per acre in favora- ble years to 1,800 pounds in unfavorable years. As range condition deteriorates, the sand bluestem, sand reedgrass. and switchgrass decrease and blue grama. sand dropseed. and sand sage increase. Annual weeds and grasses invade the site as range condition becomes poorer. Management of vegetation on this soil should be based on taking half and leaving half of the total annual produc- tion. Seeding is desirable if the range is in poor condition. Sand bluestem, sand reedgrass, switchgrass, sideoats grama, blue grama, pubescent wheatgrass. and crested wheatgrass are suitable for seeding. The grass selected should meet the seasonal requirements of livestock. It can be seeded into clean, firm sorghum stubble, or it can be drilled into a firm prepared seedbed. Seeding early in spring has proven most successful. Windbreaks and environmental plantings are generally suited to this soil. Soil blowing, the principal hazard in 970382 69—Valent sand. 0 to 3 percent slopes. This is a deep, excessively drained soil on plains at elevations of 4,650 to Wildlife is an important secondary use of this soil. The 5.100 feet. It formed in eolian deposits. Included in cropland areas provide favorable habitat for ring-necked mapping are small areas of soils that have lime within a pheasant and mourning dove. Many nongame species can depth of 40 inches. be attracted by establishing areas for nesting and escape Typically the surface layer is brown sand about fi cover. For pheasants, undisturbed nesting cover is esser,- inches thick. The underlying material to a depth of 60 tial and should be included in plans for habitat develop- inches is brown sand. ment, especially in areas of intensive agriculture. Range- Permeability is rapid. Available water capacity is land wildlife, for example. the pronghorn antelope. can be moderate. The effective rooting depth is 60 inches or attracted by developing livestock watering facilities. more. Surface runoff is slow, and the erosion hazard is managing livestock grazing, and reseeding where needed. low. This soil has fair potential for urban development. The This soil is suited to limited cropping. Intensive primary limiting soil features are the rapid permeabilit; cropping is hazardous because of erosion. The cropping and the susceptibility to soil blowing. Septic tank absor,- system should be limited to such close grown crops as al- don fields function properly. but in places the sandy sub falfa, wheat, and barley. The soil also is suited to ir- stratum does not properly filter the leachate. Sewag., rigated pasture. A suitable cropping system is 3 to 4 lagoons must be sealed. Once established, the lawn- years of alfalfa followed by 2 years of corn and small shrubs, and trees grow well. Capability subclass IVe ir- grain and alfalfa seeded with a nurse crop. rigaced, Vie nonirrigated: Deep Sand range site. Closely spaced contour ditches or sprinkers can be used in irrigating close grown crops. Contour furrows or sprin- klers should be used for new crops. Applications of bar- nyard manure and commercial fertilizer help to maintain good production. The potential vegetation is dominated by sand bluestem, sand reedgrass, switchgrass, sideoats grama, needleandthread, little bluestem, and blue grama. Poten- tial production ranges from 2,500 pounds per acre in favorable years to 1,800 pounds in unfavorable years. As range condition deteriorates, the sand bluestem. switchgrass, sand reedgrass, sideoats grama, and little bluestem decrease, forage production drops, and sand sage increases. Undesirable weeds and annuals invade and "blowout" conditions can occur as range condition becomes poorer. Management of vegetation on this soil should be based on taking half and leaving half of the total annual produc- tion. Seeding is desirable if the range is in poor condition. Sand bluestem, sand reedgrass, indiangrass, switchgrass, sideoats grama, little bluestem, and blue grama are suita- ble for seeding. Because this soil is susceptible to soil blowing, it should be seeded using an interseeder, or the seed should be drilled into a firm, clean sorghum stubble. Seeding early in spring has proven most successful. Brush management also can help in improving deteriorated range. Windbreaks and environmental plantings are fairly well suited to this soil. Blowing sand and the moderate availa- ble water capacity are the principal hazards in establish- ing trees and shrubs. The soil is so loose that trees should be planted in shallow furrows, maintaining vegetation between the rows. Supplemental irrigation is needed to insure survival. Trees that are best suited and have good survival are Rocky Mountain juniper, eastern redcedar. ponderosa pine, and Siberian elm. The shrubs best suited are skunkbush sumac, lilac, and Siberian peashrub. 970382 70—Valent sand, 3 to 9 percent slopes. This is a deep, excessively drained soil on plains at elevations of 4.650 to 5.100 feet. It formed in eolian deposits. Included in mapping are small areas of soils that have lime within a depth of 40 inches. Also included are small areas of soils that have sandstone between 40 and 60 inches. Typically the surface layer of the Valent soil is brown sand about 6 inches thick. The underlying material to a depth of 60 inches is brown sand. Permeability is rapid. Available water capacity is moderate. The effective rooting depth is 60 inches or more. Surface runoff is slow, and the erosion hazard is low. The potential vegetation is dominated by sand bluestem, sand reedgrass, switchgrass, sideoats grama, needleandthread, little bluestem, and blue grama. Poten- tial production ranges from 2,500 pounds per acre in favorable years to 1,800 pounds in unfavorable years. As range condition deteriorates, the sand bluestem, switchgrass, sand reedgrass, sideoats grama, and little bluestem decrease, forage production drops, and sand sage increases. Undesirable weeds and annuals invade and "blowout" conditions can occur as range condition becomes poorer. Management of vegetation on this soil should be based on taking half and leaving half of the total annual produc- tion. Seeding is desirable if the range is in poor condition. Sand bluestem, sand reedgrass, indiangrass, switchgrass, side-oats grama, little bluestem, and blue grama are suita- ble for seeding. Because this soil is susceptible to soil blowing, it should be seeded using an interseeder or the seed should be drilled into a firm, clean sorghum stubble. Seeding early in spring has proven most successful. Brush management can also help in improving deteriorated range. Windbreaks and environmental plantings are generally not suited to this soil. Onsite investigation is needed to determine if plantings are feasible. Wildlife is an important secondary use of this soil. Ran- geland wildlife, for example, the pronghorn antelope, can be attracted by developing livestock watering facilities, managing livestock grazing, and reseeding where needed. This soil has fair potential for urban development. The chief limiting soil features are the rapid permeability and the susceptibility to soil blowing. Septic tank absorption fields function properly, but in places the sandy sub- stratum does not properly filter the leachate. Sewage lagoons must be sealed. Once established, lawns, shrubs, and trees grow well. Capability subclass V Ie irrigated, VIe nonirrigated: Deep Sand range site. 970382 21"x15" ELLIPTICAL C.M.P. Worksheet for Circular Channel Project Description Project File c:lhaestadlfmwtairpark.fm2 Worksheet DESIGN POINT 1 (CULVERT) Flow Element Circular Channel Method Manning's Formula Solve For Discharge Input Data Mannings Coefficient 0.024 Channel Slope 1.5000 rYia Depth 17.2 in Diameter 18.00 in Results Discharge 7.48 cfs Flow Area 1.74 ft2 Wetted Perimeter 4.08 ft Top Width 0.62 ft Critical Depth 1.06 ft Percent Full 95.56 Critical Slope 0.024078 ft/ft Velocity 4.30 ft/s Velocity Head 029 ft Specific Energy 1.72 ft Froude Number 0.45 Maximum Discharge 7.50 cfs Full Flow Capacity 6.97 cfs Full Flow Slope 0.017271 ft/ft Flow is subcritical. C 10.96 Jason FlowMaster v5.10 03:14:13 PM Haestad Methods, Inc. 37 Brookside Road Waterbury,CT 06708 (203)755-1666 Page 1 of 1 970362 Curve Plotted Curves for Circular Channel Project Description Project File c:lhaestadlfmwlairpark.fm2 Worksheet DESIGN POINT 1 (CULVERT) Flow Element Circular Channel Method Manning's Formula Solve For Discharge Constant Data Mannings Coefficient 0.024 Depth 17.2 in Diameter 18.00 in Input Data Minimum Maximum Increment Channel Slope 0.5000 3.0000 0.1000% Discharge vs Channel Slope 11.0 10.0 9.0 N 8.0 a) t2 • N 7.0 O 8.0 5.0 4.0 0.5 1.0 1.5 2.0 2.5 3.0 Channel Slope (%) 09/10/96 jason FlowMaster v5.10 03:12:58 PM Haestad Methods, Inc. 37 Brookside Road Waterbury,CT 06708 (203)755-1666 Page 1 of 1 970382 Hello