HomeMy WebLinkAbout1.0 Application1 1 SKETCH PLAN SUBMITTAL 1 Cowgill Subdivision. 1 1 27 June 2002 1 1 Applicant: Ursula Cowgill 1 Location: Missouri Heights, Garfield County, Colorado Zone District: Agricultural/Residential/Rural Density (A/R/RD) An application, for a 6 -lot subdivision, providing 5 new 1 residential sites and one existing residential home site. 1 1 ■ Represented by: Stan Clauson Associates, LLC 200 E. Main Street Aspen, CO 81611 970-925-2323 1 1 27 June 2002 Mr. Mark Bean, Building & Planning Director Garfield County 109 N. Eighth Street, Room 303 Glenwood Springs, CO 81601 Dear Mark: STAN CLAusON Assocra , t_Uc Planning • Urban Design Landscape Architecture Transportation Studies Project Management 200 EAST MAIN STREET A:srEN, COI MAW 8161 1 Tiareti ree• 5170 925 2323 FAX. 970 920 1628 E-SAMIL cinusonwaplannifg turn Wee: wsww.waplammng tom Re: Cowgill Subdivision—Sketch clan Submittal As the planning consultant for Ursula Cowgill, I am writing to request Sketch Plan Review for the proposed Cowgill Subdivision in Missouri Heights. The subject property is located on County Road 103, near the intersection with County Road 100. A full legal description of the property is provided on the attached drawing. Primary contact for this application is Stan Clauson of Stan Clauson Associates, LLC at the address given above. The property owner is Ursula Cowgill, whose address is P.O. Box 1327, Carbondale, Colorado 81623; telephone 963-2488. Engineering consultant is Gamba Associates, 1 i 3 Ninth Street, P.O. Box 1458, Glenwood Springs, Colorado 81602; telephone 945-2550. The proposed subdivision would create five (5) new lots, which combined with the existing house would produce a total of six (6) lots. The zoning is AgriculturaVResidentialfRural Density (AA/RD), which provides for a minimum lot area of two acres. The lots to be created as part of the proposed subdivision range from 7.28 to 10.20 acres. Suggested building envelopes are provided that are consistent with setback and lot coverage requirements. One feature of the proposed subdivision is the intention to protect by covenant the rear portion of each ofthe subdivided lots. This results in 30.7 acres protected as common open space available to all ofthe subdivision lot owners. Attached is the drawing dated 19 April 2002 providing the Sketch Plan Submittal, along with the other required submittal materials. The drawing shows the general location and dimensions of all proposed lots, as well as the existing Cowgill home site. It provides contour data at five-foot intervals. Average slopes on the property are less than 20%. There are no natural or man-made features bordering or within the proposed subdivision that will require buffering or screening, and the site does not contain any major drainages. PLANNING ANO Ltl-stt,.N SCltl!:IONS FOR COMMUNITIES AND PRi A7E SECTOR CLIENTS 1. 1 1 1 1 1 1 1 1 1 1 1 1 1 11 Mr. Mark Bean, Building. & Planning Director Garfield County 27 June 2002 Page 2 We look forward to an opportunity to present this project in the hearing process and remain. ready to answer any questions that staff may have regarding the project. Very truly yours, Stan Clauson, AICP, ASLA STAN CLAUSON ASSOCIATES, LLC Attachments 1-4: 1. Subdivision Application From 2. Required Supplementary Information 3. Soil Data from Gamba Associates 4. Sketch Plan Submittal Drawing 5. Improvement Survey Enclosures: 1. Sketch Plan Application fee in the amount of 5325.00 2. 15 copies of this application 3. 5 copies 24" x 36" Sketch Plan Submittal Drawing Cc: Applicant Robert Noone, Esq. 1 Sketch plan x Preliminary Plan Final Plat SUBDIVISION APPLICATION FORM !SUBDIVISION NAME: Cnw i 11 Suhdi rri si on OWNER: ENGINEER/PLANNER/SURVEYOR: . . Stan Clauson Associates, LLC 'LOCATION: Section 1.3 _ Township 7 South Range WATER SOURCE: Individual ells on each lot 1SEWAGE DISPOSAL METHOD: ISbS on each lot PUBLIC ACCESS VIA: 88 West Garfield County Road 103 'EXISTING ZONING: AIRIRG EASEMENTS : Utility None Ditch None ITOTAL DEVELOPMENT AREA: (1) Residential Single Farniy Duplex Multi -family Mobile Home (2) Commercial Number 6 (incl. 1 existing) Acres 52.28 Floor Area Acres sq.ft. (3) Industrial sq.ft. 1(4) Public/Quasi-Public (5) Open Space/Common Area Ui0TAL: 'PARKING SPACES:. Residential Per code, based on building size 'Commercial 52 2'8 Cowgill Subdivision Sketch Plan Application 27 June 2002 Attachment 2—Supplemental Information A. Source and amount of water supply Water will be provided h) individual wells on each lot. An augmentation plan is in the process of development. B. Proposed type of sewage disposal Sewage disposal will be provided by ISDS on each lot. C. U.S.D.A. Soil Conservation Service soil designations, with interpretations tables attached Provided on the following page. D. Statement assessing the impact of the proposed subdivision on the lakes, streams, and topography of the site There are no lakes or stream present on the site. Proposed lots and building envelopes have been sited to take advantage of the existing topography, with minimal regrading required. E. Statement assessing potential radiation hazards to the site There are no known radiation hazards identified for this site. A geotechnical analysis of any potential radiation hazards will be provided at Preliminary Plat Submittal. F. Evidence that all lots and parcels created by the subdivision will have access to a public right -of way All lots will have individual access from County Road 103, except for Lot 4. Lot 4 will share access with the existing driveway for Lot 5, with access provided by a 20' access easement. G. Anticipated source of electricity, natural gas, telephone and cable T.V. services Electricity will by provided by the Holy Cross Electric Association. Telephone will be provided by Qwest Communications. Both of these utilities have service corridors immediately adjacent to and accessible to the proposed subdivision. Natural gas and cable television utilities are not available in this area. JEROME GAMBA & ASSOCIATES, INC. CONSULTING ENGINEERS & LAND SURVEYORS m tan !MET, BLUE 214 PO. BOX WM OWN= C7aDRADo ekl02-145e PHONE, d7O) W5-2550 FAX, (703 945-14)O TRANSMITTAL Date: May 28, 2002 Time: 12:20 PM Project Name: Cowgill Subdivision Project Number: 02998 To: Stan Clauson Company: Stan Clauson and Associates, LLC Address 200 East Main Street Aspen, Colorado 81611 Phone: (970) 925-2323 From: Bntt Kelly Re: S C C soil types for Cowgill Subdivision We herewith transmit the following: 0 Drawings 0 Contract Documents 0 Bid Documents 0 Specifications 0 Product Literature 0 Change Order x Soil Survey Map For your: ❑ 0 Approval 0 Review & Comment 0 Distribution to Parties 0 Record x Information 0 tJse • Comments: The enclosed S.C.S soils map with the highlighted area represents the Cowgill Subdivision. The soil type units within area are: • 34 Empedrado loam, 2 to 6 percent slopes. • 35. Empedrado loam. 12 to 25 percent slopes. • 95, Showalter-Morval complex. 15 to 25 percent • 106 Tridell-Brownsto stony sandy loams, 12 to 50 percent slopes, extremely stony Also included are corresponding pages for the Map Unit Descriptions, Table 10 Building site and development. Table 11. Sanitary facilities, Table 14. Engineering index properties, Table 15. Physical and chemical properties of the soils, and Table 16. Soil and water features 1 1 1 1 1 1 1 1 1 Aspen -Gypsum Area, Colorado the range condition deteriarates, mountain big sagebrush, Douglas rabbitbrush, cheatgrass, and annual weeds increase in abundance. This unit responds well to applications of fertilizer. to range seeding, and to proper grazing use. Areas that are heavily infested with undesirable plants can be improved by chemical or mechanical treatment. This unit is well suited to hay and pasture. A seedbed should be prepared on the contour or across the slope where practical. For successful seeding, a seedbed should be prepared and the seed drilled. Aaplications of nitrogen and phosphorus fertilizer improve the growth of forage plants. Proper stocking rates, pasture rotation, and restricted grazing during wet periods help to keep the pasture in good condition and protect the soil from erosion. Furrow, border, corrugation, and sprinkler irrigation systems are suited to this soil. Pipe, ditch lining, or drop structures in irrigation ditches facilitate irrigation and reduce the hazard of ditch erosion. This unit is well suited to irrigated crops. If properly managed, it can produce 80 bushels of barley per acre annually. This unit is well suited to homesite development. This map unit is in capability subclass IVe, irrigated end nonirrigated. It is in the Deep Loam range site. 33—Earsman-Rock outcrop complex, 12 to 65 Ipercent slopes. This map unit is on mountainsides and ridges. Elevation is 6,000 to 8.500 feet. The average annual precipitation is 14 to 16 inches, the average annual air temperature is 42 to 44 degrees F, and the verage frost -free period is 80 to 105 days. This unit is about Earsman andy loam and 35 percent45 Rockpercent outcrop. Thevery Earsman oil is on the less steep slopes, and the areas of Rock utcrop are in the steeper convex areas throughout the unit. IIncluded in this unit are small areas of Arie and ,nsari soils and soils that are similar to the Earsman soil but are deeper over bedrock. Included areas make Ip about 20 percent of the total acreage. The Earsman soil is shallow and somewhat excessively drained. It formed in residuum and liuviurn derived dominantly from calcareous redbed ndstone. About 5 to 10 percent of the surface is vered with flagstones, and 5 to 15 percent is covered with channery fragments. A thin layer of partially 11 composed needles, twigs, and leaves is on the pace in many places. Typically, the surface layer is reddish brown very stony sandy loam about 5 inches $ck. The substratum to a depth of 19 inches is very winery sandy loam. The depth to hard, calcareous ndstone ranges from 10 to 20 inches. 1 35 Permeability is moderately rapid in the Earsman soil. Available water capacity is very low. The effective rooting depth is 10 to 20 inches. Runoff is rapid, and the hazard of water erosion is slight to severe on the steeper slopes. This unit is used mainly as rangeland or as wildlife habitat. It also is used as a source of firewood and posts. The potential plant community on this unit is mainly pinyon pine, Utah juniper, bluebunch wheatgrass. bottlebrush squirreitail, Indian ricegrass, and western wheatgrass. The potential production of the native understory vegetation in normal years is about 500 pounds of air-dry vegetation per acre. The slope limits access by livestock. The limited accessibility results in overgrazing of the less sloping areas. if the plant cover is disturbed. protection from flooding is needed to control gullying, streambank cutting, and sheet erosion. This unit is suited to limited production of firewood. The average annual production is 5 cords per acre. The average stocking rate is 100 trees per acre. Special care is needed to minimize erosion when the stands are thinned and when other forest management practices are applied. This unit is severely limited as a site for homesite development. Limitations include the shallow depth to bedrock. the exposed bedrock, the slope, the rapid runoff rate, and the very high hazard of water erosion. This map unit is in capability subclass Vile. nonirrigated. It is in the Pinyon -Juniper woodland site, 34—Empedrado loans, 2 to 6 percent slopes. This deep, well drained soil is on fans and upland hills. It formed in alluvium and eatian material. Elevation is 6.500 to 9.000 feet. The average annual precipitation is 15 to 18 inches, the average annual air temperature is 40 to 44 degrees F. and the average frost -free period is 75 to 95 days. Typically, the surface layer is brown loam about 5 inches thick. The subsoil is clay loam about 35 inches thick. The substratum to a depth of 60 inches or more is clay loam. The soil is noncalcareous to a depth of 38 inches and calcareous below that depth. Included in this unit are small areas of soils that are similar to the Empedrado soil but have a darker, thicker surface layer. Also included are small areas of soils that are similar to the Empedrado soil but are silt loam or silty clay loam. included areas make up about 20 percent of the total acreage. Permeability is moderate in the Empedrado soil. Available water capacity is high. The effective rooting depth is 60 inches or more. Runoff is medium, and the hazard of water erosion is slight. 36 Soil Survey This unit is used as hayland or for crops. It is well suited to hay and pasture. Grasses and legumes grow well if adequate fertilizer is used. if properly managed, the unit can produce 5 tons of irrigated grass hay per acre annually. The potential plant community on this unit is mainly western wheatgrass, needleandthread, prairie junegrass. mountain big sagebrush, and Douglas rabbitbrush. Other plants that characterize this site are muttongrass, Letterman needlegrass, common snowberry, Utah serviceberry, and antelope bitterbrush. The average annual production of air-dry vegetation is about 1.500 pounds per acre. if the range condition deteriorates, mountain big sagebrush, Kentucky bluegrass, Douglas rabbitbrush, and annual weeds increase in abundance. This unit is well suited to alfalfa and small grain crops. It has few limitations. Maintaining crop residue on or near the surface helps to control runoff and soil blowing and helps to maintain tilth and the content of organic matter. If properly managed, the unit can produce 90 bushels of barley per acre annually. This unit is suited to homesite development. The main limitations are the shrink swell potential and the moderate permeability. The shrink -swell potential can be minimized by thoroughly prewetting foundation areas. The moderate permeability can be overcome by increasing the size of the absorption field. This map unit is in capability subclass IVe, irrigated and nonirrigated. It is in the Deep Loam range site. 35—Empedrado loam, 6 to 12 percent slopes. This deep, well drained soil is on fans and upland hills. It formed in alluvium and eclian material. Elevation is 6,500 to 9,000 feet. The average annual precipitation is about 15 to 18 inches, the average annual air temperature is 40 to 44 degrees F, and the average frost -free period is 75 to 95 days. Typically, the surface layer is brown loam about 5 inches thick. The subsoil is clay loam about 35 inches thick. The substratum to a depth of 60 inches is clay loam. The soil is noncalcareous to a depth of 38 inches and calcareous below that depth. Included in this unit are small areas of soils that are similar to the Empedrado soil but have a darker, thicker surface layer. Also included are small areas of soils that are similar to the Empedrado soil but are silt loam or silty clay loam throughout. Included areas make up about 20 percent of the total acreage. Permeability is moderate in the Empedrado soil. Available water capacity is high. The effective rooting depth is 60 inches or more. Runoff is medium, and the hazard of water erosion is moderate. This unit is used as hayland or for crops. It is well suited to hay and pasture. Grasses and legumes grow well if adequate fertilizer is used. If properly managed, the unit can produce 4 tons of irrigated grass hay per acre annually. This unit is well suited to alfalfa and small grain crops. It is limited mainly by the slope in some areas. Limiting tillage during seedbed preparation and controlling weeds help to control runoff and erosion. Alf tillage should be on the contour or across the slope. If properly managed, the unit can produce 75 bushels of barley per acre annually. The potential plant community on this unit is mainly western wheatgrass, needleandthread, prairie junegrass, mountain big sagebrush, and Douglas rabbitbrush, Other plants that characterize this site are muttongrass. Letterman needlegrass, common snowberry, Utah serviceberry, and antelope bitterbrush. The average annual production of air-dry vegetation is about 1.500 pounds per acre, If the range condition deteriorates, mountain big sagebrush, Kentucky bluegrass, Douglas rabbitbrush„ and annual weeds increase in abundance. These plants are dominant when the range is in poor condition; therefore. livestock grazing should be managed so that the desired balance of the preferred species is maintained. This unit is suited to homesite development. The main limitations are the shrink -swell potential and the slope. The shrink -swell potential can be minimized by prewetting foundation areas. The slope is a management concern if septic tank absorption fields are installed. Absorption lines should be installed on the contour. This map unit is in capability subclass IVe, irrigated and nonirrigated. It is in the Deep Loam range site. 36—Empedrado loam, 12 to 25 percent slopes. This deep, well drained soil is an fans and upland hills. It formed in alluvium and eolian material. Elevation is 6,500 to 9.000 feet. The average annual precipitation is 15 to 18 inches, the average annual air temperature is 40 to 44 degrees F, and the average frost -free period is 75 to 95 days. Typically, the surface layer is brown loam about 5 inches thick. The subsoil is clay loam about 35 inches thick. The substratum to a depth of 60 inches or more is clay loam. The sail is noncalcareous to a depth of 38 inches and calcareous below that depth. Included in this unit are small areas of soils that are similar to the Empedrado soil but are silt loam or silty clay loam. Also included are small areas of soils that are similar to the Empedrado soil but have a darker, thicker surface layer. Included areas make up about 15 percent of the total acreage. Permeability is moderate in the Empedrado soil. en -Gypsum Area, Colorado 65 Grasses and legumes grow well if adequate fertilizer is ISed. Ltmittng tillage for seedbed preparation and :,,controlling weeds help to control runoff and erosion. If properly managed, the unit can produce 3 tons of irrigated grass hay or 60 bushels of barley per acre annually. The potential plant community on the Showalter soil is mainly bluebunch wheatgrass, western wheatgrassI , prairie junegrass, Indian ricegrass, true mountainmahogany, antelope bitterbrush, Saskatoon serviceberry, and big sagebrush. The average annual production of air-dry vegetation is about 900 pounds per acre. The potential plant community on the Morval soil is mainly needleandthread, western wheatgrass, Imuttongrass prairie junegrass, and big sagebrush. The average annual production of air-dry vegetation is about 1,500 pounds per acre. IThe main limitation for range seeding or mechanical treatment is the surface stoniness in areas of the ;Showalter soil. Range seeding generally is restricted to Ibroadcasting because of this limitation. This unit is poorly suited to homesite development. ;The main limitations are the shrink -swell potential and ` the stones throughout the profile. This map unit is in capability subclass Vle, irrigated and nonirrigated. The Showalter soil is in the Loamy Slopes range site, and the Morval soil is in the Deep 'Loam range site. 95---Showalter-Morval complex, 15 to 25 percent lopes. This map unit is on alluvial fans. high terraces, nd valley sides (fig, 7). Elevation is 7,000 to 8,500 feet. The average annual precipitation is 14 to 16 inches, the average annual air temperature is 42 to 44 egrees F, and the average frost -free period is 80 to 90 1 0 airs. This unit is about 45 percent Showalter very stony Iam and 35 percent Morval loam. The Showalter soil is convex areas, and the Morval sail is in the more concave areas. IIncluded in this unit are small areas of soils that are imilar to the Morval soil but have 30 to 50 percent cobbles in the substratum. included areas make up bout 20 percent of the total acreage. The Showalter soil is deep and well drained. it rmed in alluvium derived dominantly trom basalt. About 10 to 15 percent of the surface is covered with tones, 5 percent with cobbles, and 5 percent with avel. Typically, the surface layer is brown very stony loam about 8 inches thick. The upper 3 inches of the tbsoil is very cobbly clay loam. The lower 28 inches is ry cobbly clay. The substratum to a depth of 60 inches or rnore is very cobbly clay loam. 1 Permeability is slow in the Showalter soil. Available water capacity is moderate. The effective rooting depth is 60 inches or more. Runoff is medium. and the hazard of water erosion is moderate. The Morval soil is deep and well drained. It formed in alluvium derived dominantly from basalt. Typically, the surface layer is brown loam about 7 inches thick. The upper 12 inches of the subsoil is clay loam. The lower 4 inches is loam. The substratum to a depth of 60 inches is loam. The soil is noncalcareous to a depth of 19 inches and calcareous below that depth. Permeability is moderate in the Morval soil. Available water capacity also is moderate. The effective rooting depth is 60 inches or more. Runoff is medium, and the hazard of water erosion is slight. This unit is used as rangeland or hayland or for homesite development. The potential plant community on the Showalter soil is mainly bluebunch wheatgrass, western wheatgrass, prairie junegrass, Indian ricegrass, true mountainmahogany, antelope bitterbrush, Saskatoon serviceberry, and big sagebrush. The average annual production of air-dry vegetation is about 900 pounds per acre. The potential plant community on the Marvel soil is mainly needleandthread, western wheatgrass. muttongrass, prairie junegrass, and big sagebrush. The average annual production of air-dry vegetation is about 1,500 pounds per acre. The main limitation for range seeding or mechanical treatment is the surface stoniness in areas of the Showalter soil. Suitable management practices include proper range use, deferred grazing, and rotation grazing. Aerial spraying is suitable for brush management. if this unit is used tor hay and pasture, the main limitations are the surface stoniness, the slope, and the slow permeability in the Showalter soil. Grasses and legumes grow well if adequate fertilizer is used. This unit is very poorly suited to homesite development. The main limitations are the slope. the shrink -swell potential. and the stones throughout the profile. This map unit is in capability subclass Vie, nonirrigated. The Showalter soil is in the Loamy Slopes range site, and the Morval soil is in the Deep Loam range site. 96—Southace cobbly sandy loam. 1 to 6 percent slopes. This deep, well drained soil is on upland terraces, mountainsides, and alluvial fans. it formed in alluvium derived dominantly from redbed sandstone and shale intermixed with gypsiferous material. Elevation is 6,000 to 7,000 feet. The average annual precipitation is 72 Soil Survey The Rock outcrop consists mainly of barren sandstone, shale. and basalt. This unit is used as wildlife habitat. The native vegetation is grasses. fords. pinyon, and Utah juniper. This unit is poorly suited to homesite development. The main limitations are the slope, the depth to bedrock, and large stones. This reap unit is in capability class VIII. No range site is assigned. 106—Tridell-Brownsto stony sandy foams, 1210 50 percent slopes, extremely stony. This map unit is on terraces and mountainsides. Elevation is 6,400 to 7,700 feet. The average annual precipitation is 12 to 14 inches, the average annual air temperature is 42 to 44 degrees F, and the average frost -free period is 85 to 105 days. This unit is about 45 percent Tridell soil and 35 percent Brownsto soil. About 5 to 10 percent of the surface is covered with stones. Included in this unit are small areas of Fore.Ile and Evanston soils in the less sloping cleared areas. Also included are small areas of basalt Rock outcrop and soils that are similar to the Tridell soil but have less gravel and fewer stones. Included areas make up about 20 percent of the total acreage. The Tridell soil is deep and somewhat,excessivefy drained. It formed in alluvium and colluvium derived dominantly from sandstone and basalt. Typically, the upper part of the surface layer is grayish brown stony sandy loam about 2 Mulles thick. The lower part is grayish brown very cobbly fine sandy foam about 7 inches thick. The upper 5 inches of the substratum is very cobbly fine sandy loam. The next part is cobbly sandy loam about 11 inches thick. Below this is 12 inches of very stony fine sandy loam. The lower part of the substratum to a depth of 60 inches is very stony loamy sand. Hard basalt is commonly below a depth of about 60 inches. The soil is calcareous throughout. A thin layer of partially decomposed needles, twigs, and leaves is on the surface in many places. Permeability is moderately rapid in the Tridell soil, Available water capacity is low. The effective rooting depth is 60 inches or more. Runoff is rapid, and the hazard of water erosion is moderate. The Brownsto soil is deep and well drained. It formed in alluvium derived dominantly from coarse textured, calcareous sandstone and basalt. Typically, the upper part of the surface layer is light brownish gray stony sandy loam about 4 inches thick. The lower part is light brownish gray stony sandy loam about 7 inches thick. The upper 19 inches of the substratum is very gravelly sandy loam. The next 12 inches is very gravelly loamy sand. The lower part to a depth of 60 inches is gravelly sandy loam, A thin layer of partially decomposed needles. twigs. and leaves is on the surface in many places. Permeability is moderate in the Brownsto soil. Available water capacity is low. The effective rooting depth is 60 inches or more. Runoff is rapid. and the hazard of water erosion is moderate. This unit is used mainly for livestock grazing or wildlife habitat. It also is used for limited homesite development, for Christmas trees. or as a source of firewood and posts. The potential plant community on the Tridell soil is mainly pinyon pine and Utah juniper with an understory of bluebunch wheatgrass, Indian ricegrass, Wyoming big sagebrush. and muttongrass. Other plants that characterize this site are bottlebrush squirreltail, antelope bitterbrush, and true mountainmahogany. The average annual production of air-dry vegetation is about 300 pounds per acre. The potential plant community on the Brownsto soil is mainly Wyoming big sagebrush. needleandthread, Indian ricegrass, western wheatgrass, and scattered pinyon pine and Utah juniper. Other plants that characterize this site are bottlebrush squirreltail, antelope bitterbrush, and true mountainmahogany. The average annual production of native understory vegetation is about 600 pounds per acre. If the range condition deteriorates, Wyoming big sagebrush. cheatgrass, and annual weeds increase in abundance. Mechanical treatment is not practical because of the very stony surface and the slope. Suitable management practices include proper grazing use and a planned grazing system. The slope limits access by livestock. The limited accessibility results in overgrazing of the less sloping areas. Selective thinnin of the pinyon and juniper stands improves the quality o the understory for grazing and provides firewood, post and Christmas trees. The Tridell soil is suited to limited production of pinyon pine and Utah juniper. The average annual production is 5 cords per acre. The average stocking rate is 150 trees per acre. To ensure sustained yields and continued use, the kind of wood production should be considered before the stands are thinned or cleare Special care is needed to minimize erosion when the stands are thinned or cleared. Thinning the stands generally promotes the growth of understory grasses and young trees. Only the less sloping areas of this unit are suited t homesite development. The main limitations are the slope and the stoniness. Erosion is a hazard in the steeper areas. Only the part of the site that is used for construction should be disturbed. Topsoil can be stockpiled and used to reclaim areas disturbed durin 1 1 1 1 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 1 Aspen -Gypsum Area, Colorado 73 construction. The gravel and cobbles in disturbed areas should be removed if the site is landscaped, particularly in areas used for lawns. Areas adjacent to hillsides are occasionally affected by runoff, which may be accompanied by the movement of rock debris. Population growth has resulted in increased construction of homes in areas of this unit. This map unit is in capability subclass Vile, nonirrigated. The Tridell soil is in the Pinyon -Juniper woodland site, and the Brownsto soil is in the Stony Foothills range site. 107—Uracca, moist-Mergel complex, 1 to 6 percent slopes, extremely stony. This map unit is on alluvial fans, benches, and valley side slopes. Elevation is 6,800 to 8,400 feet. The average annual precipitation is 116 to 19 inches, the average annual air temperature is 40 to 43 degrees F, and the average frost -free period is 75 to 95 days. This unit is about 50 percent Uracca soil and 40 Ipercent Mergel soil. included in this unit are small areas of soils that are similar to the Uracca and Mergel soils but have a Ithicker surface layer and a lower content of coarse fragments. included areas make up about 10 percent of the total acreage. IThe Uracca soil is deep and well drained. It formed in alluvium derived dominantly from mixed igneous and metamorphic material. About 3 to 15 percent of the surface is covered with boulders, stones, cobbles, and Igravel. Typically, the surface layer is brown cobbly sandy loam about 3 inches thick. The upper 5 inches of the subsoil is cobbly sandy loam. The lower 7 inches is Ivery cobbly sandy clay loam. The substratum to a depth of 60 inches or more is extremely cobbly loamy sand. The content of coarse fragments ranges from 35 to 85 Ipercent, by volume, in a major part of the surface layer and subsoil. Permeability is moderately rapid in the Uracca soil. Available water capacity is low. The effective rooting depth is 60 inches or more. Runoff is slow, and the hazard of water erosion is slight. The Merge' soil is deep and well drained. It formed in 'glacial outwash. About 3 to 30 percent of the surface is 'covered with boulders, stones, cobbles, and gravel. Typically, the surface layer is grayish brown cobbly iaoarn about 8 inches thick. The upper 12 inches of the substratum is very cobbly sandy loam. The lower part to depth of 60 inches is extremely stony sandy loam. The content of coarse fragments ranges from 35 to 80 rcent, by volume. Permeability is moderate in the Mergel soil. Available ,fi water capacity is low. The effective rooting depth is 60 u_ inches or more. Runoff is slow, and the hazard of water erosion is slight. This unit is used mainly for irrigated hay and pasture. It also is used for homesite development or rock quarrying. If this unit is used for hay and pasture, the main limitation is the low available water capacity. Frequent irrigation is needed. Applications of nitrogen and phosphorus fertilizer improve the growth of forage plants. Proper stocking rates, pasture rotation, and restricted grazing during wet periods help to keep the pasture in good condition and protect the soil from erosion. Irrigation water can be applied by corrugation, sprinkler, and flooding methods. Pipe, ditch fining, or drop structures in irrigation ditches facilitate irrigation and reduce the hazard of ditch erosion. If properly managed, the unit can produce 4 tons of irrigated grass hay per acre annually. if this unit is used for homesite development, the main limitations are the large stones and boulders on and below the surface. Population growth has resulted in increased construction of homes in areas of this unit. Preserving the existing plant cover during construction helps to control erosion. The gravel and cobbles in disturbed areas should be removed if the site is landscaped, particularly in areas used for lawns. The effluent from septic tank absorption fields can surface in downslope areas and thus create a health hazard. If the density of housing is moderate or high, community sewage systems are needed to prevent the contamination of water supplies resulting from seepage from onsite sewage disposal systems. Areas adjacent to hillsides are occasionally affected by runoff, which may be accompanied by the movement of rock debris. This map unit is in capability subclass Vls, irrigated and nonirrigated. It is in the Stony Loam range site. 108—Uracca, moist-Mergel complex, 6 to 12 percent slopes, extremely stony. This map unit is on alluvial fans and valley side slopes. Elevation is 6,800 to 8,400 feet. The average annual precipitation is 16 to 19 inches, the average annual air temperature is 40 to 43 degrees F, and the average frost -free period is 75 to 95 days. This unit is about 50 percent Uracca soil and 40 percent Mergel soil. Included in this unit are small areas of soils that are similar to the Uracca and Mergel soils but have a thicker surface layer and a lower content of coarse fragments. Included areas make up about 10 percent of the total acreage. The Uracca soil is deep and well drained. It formed in alluvium derived dominantly from mixed igneous and 194 Sod Survey '['ABLE 1D. --BUILDING SITE DEVELOPMENT --Continued 1 Soil name and 1 Shallow Dwellings Dwellings map symbol 1 excavations without w:tn I basements basements Small I Local macs :,awns ono commercial I and streets _..:,uscap.n:a buildings 1 I 1 I 1 34 -------- Slight- ISlight ------- -ISlight Moderate: !Moderate: (Moderate: Empedrado 1 i slope. 1 frost action. 1 large stones. 1 35 ------(Moderate: Moderate: (Moderate: Severe: Moderate: (Moderate: Empedrado 1 slope. slope. 1 slope. slope. 1 slope, ! large atones, 1 frost action. 1 slope. I ! 36 Severe: Severe: Severe: Severe: 'Severe: 'Severe: Empedrado 1 slope. slope. slope. slope. 1 slope. I slope. ( I I 37 Severe: Severe: Severe: Severe: 'Severe: 'Severe: Etre 1 slope. slope. slope. slope. I slope. I slope. 1 I I 38 ---ISlight Slight- Slight Slight ISlight----------ISlight. Evanston I I 1 I 1 39, 40, 42-------- Severe: Severe: Severe: Severe: (Severe: [Severe: Evanston ! slope. slope. slope. slope. I slope. I slope. 1 42*--------- !Severe: Severe: Severe: Severe: ;severe: 'Severe: Fluvaquents cutbanks cave. flooding, flooding, flooding. 1 wetness, [ wetness. wetness. wetness. wetness. wetness. I flooding, 1 1 frost action. 1 43*: 1 I I I ForelleModerate: Moderate: Moderate: Severe: 'Moderate: [Moderate: slope. slope. slope. slope. 1 slope. 1 large stone I1 slope. I I Brownsto- Severe: Moderate: Moderate: Severe: (Moderate: !Moderate: cutbankscave. slope. slope. slope. I slope. 1 small stones[ 1 1 droughty, I I slope. 44*: I 1 1 Forelle Severe: Severe: Severe: Severe: (Severe: 'Severe: slope. scope. slope. 1 slope. I slope. 1 slope. I 1 Brownsto Severe: Severe: Severe: Severe: [Severe: 'Severe: cutbanks cave, slope. slope. 1 slope. 1 slope. 1 slope. slope. I 1 1 1 45 Moderate: Moderate: Moderate: Moderate: (Moderate: I5evere: large stones. large stones. ' large stones. 1 slope, 1 frost action, 1 large stones large stones. 1 large stones. I I 1 4G, 47---- Severe: Severe: Isevere: (Severe: !Severe: ;Severe: Forsey 1 slope. 1 slope. 1 slope. I slope. 1 slope. 1 large sto ' yq 1 I 1 1 1 slope. 1 1 I 49 ----y----(Moderate: Severe: Severe: Severe: [Severe: !Moderate: Fughes too clayey. shrink -swell. 1 shrink -swell 1 shrink -swell. 1 shrink -swell, 1 large stop I I 1 1 law strength. 1 1 ! 49 ISlight slight Slight (Moderate: [Slight---------ISlight. Gorlin 1 slope. 1 I 1 1 I 50 ----------------(Severe: Severe: Severe: (Severe: (Severe: I Se^✓e: e: Goslin I slope. slope. slope. I slope. I slope. 1 slope. 1 I I 1 Forsey See footnote at end of table. Aspen -Gypsum Area, Colorado 197 TABLE 10. --BUILDING SITE DEVELOPMENT --Continued Soil name and map symbol 87*: Tridell Shallow excavations Dwellings without basements Dwellings with basements Sara 11 commercial buildings Local roads and streets Lams and landscaping 88*: Moyerson--------- Rock outcrop. 89 Mussel 90 - Mussel 91 Mussel 92 Redrob Rcgert 94*: Showalter Morval 95*: Showalter-------- Morval-----dr-- Southace 97---_- 5outhace Severe: cutbanks cave, slope. Severe: depth to rock, slope. Severe: cutbanks cave. Severe: cutbanks cave. Severe: cutbanks cave. slope. Severe: cutbanks cave, wetness. Severe: depth to slope. Severe: slope. Severe: shrink -swell, slope. Slight Moderate: slope. Severe: slope... Severe: flooding. Severe: rock, slope, depth to rock. Moderate: too clayey, large stones, slope. Moderate: slope. Severer slope. Severe: slope. Moderate: large stones. lModerate: large stones, slope. 98, 99 lSevere: Southace 1 slope. See footnote at end of table. (Moderate: 1 shrink -swell, slope, large stones. Moderate: shrink -swell, slope. (Severe: slope.. lSevere: I slope. (Moderate: large stones. Moderate: slope, large stones. Severe: slope. Severe: slope.. Severe: depth to rock, slope, shrink -swell. (slight Moderate: slope. Severe: slope. Severe: flooding, wetness. Severe: slope. Severe: shrink -swell, elope. Slight --------- Severe: slope. Severe: slope. Severe: flooding. Severe: (Severe: depth to rock, elope, slope. 1 depth to rock. Moderate: slope. large stones. Moderate: slope, shrink -swell. Severe: slope. Severe:. slope.. 1Moderate: large stones. lSevere: I slope. Severe: slope. Severe: slope. Severe: slope. Moderate: large stones. Moderate: Severe: slope, 1 slope. lazge stones. 1 Severe: slope. Severe: slope. Severe: I slope. Severe: low strength, slope, shrink -swell. Moderate: frost action, Moderate: slope, frost action. Severe: slope. Moderate: wetness. flooding. Severe: slope. Severe: slope, thin layer. Slight. Moderate: slope. Severe: slope. Moderate: wetness. Severe: Severe: depth to rock,( small stones, slope. 1 slope. Moderate: slope, frost action, shrink -swell. Moderate: low strength, slope, frost action. Severe: slope. Severe: slope. i slope. Moderate: lSevere: large stones. 1 droughty. Severe: large stones. Moderate: slope. ,Severe: I large stones. i slope. 1Severe: (Moderate: lSevere: I slope, 1 droughty. large stones. 1 Severe: 1 slope. Severe: droughty, slope. 198 Soil name and map symbol Shallow excavations Sail Survey T BL.=' 1 - . --B `e 't4G SITE DEVELOPMENT --Continued Dwellings without basements Dwellings with basements 100': Stanley-____�.__. Starless---• —•• 01 r; Tan..a Pinelli- 1©2": Tann' Pine11 103": Pinelli-------___ Severe: Severe: depth to rock.i depth to rock. Severe: {Severe: depth to rock.l depth to rock. Moderate: Severe: depth to rock, shrink -swell. too clayey. 1 Moderate: too clayey. Moderate: depth to rock, too clayey, slaps. Moderate: too clayey, slope. Severe: slope. Severe: slope. 104*: Torriorthenta---- Revere: I depth to rock. S slope. Caoiborthids (Variable Rock outcrop. 105": Torriorthents--^-(Severe: depth to rock slope. Rock outcrop. 106►: Tridel1 Severe: cutbenks cave, slope. See footnote at end of table. Severe: depth to rock. Severe: depth to rock. Severe: Small commercial buildings Severe: slope, depth to rock. Severe: slope, depth to rock. Severe: shrink -swell. 1 shrink -swell. Moderate; (Moderate: (Moderate: shrink -swell. 1 shrink -swell. shrink -swell. Severe: Severe: shrink -swell. 1 shrink -swell. Moderate: shrink -swell, slope. Severe: shrink -swell, siege. Severe: slope. Severe: slope, depth to rock. Variable Severe: slope, depth to rock. Severe: slope. Moderate: slope, shrank -swell. Severe: slope, shrink -swell. Severe: slope. Severe: depth to rock, slope. Variable Severe: depth to rock, elope. Severe: slope. Severe: shrink -swell, slope. Severe: slope. Severe: shrink -swell, slope. Severe: slope. Severe: slope, depth to rock. Variable- Local roads and streets I Severe: depth to rock. Severe: depth to rock. Severe: shrink -swell, low strength. Moderate: shrink -swell, low strength. Severe: shriek -swell, low strength. Moderate: shrink -swell, law strength, slope. Severe: shrink -swell, low strength, slope. Severe: slope. Lawns and landscaping Severe: small stones, depth to rock Severe: small stones, depth to rock... Moderate; depth to rock Slight. Moderate: slope, depth to r Moderate: slope. Severe: slope. Severe: slope. Severe: Severe: dept:: to rock, 1 slope. slope - 1 depth to Variable--- --(Variable. Severe: (Severe: elope, 1 depth to depth to rock. l slope. Severe: slope. (severe: I slope. rock, Severe: slope, depth to 1Severe: 1 slope. 0 Aspen -Gypsum Area, Colorado 199 TABLE 10. --BUILDING SITE DEVELOPMENT --Continued Soil name and map symbol Shallow excavations Dwellings without basements Dwellings with basements Small commercial buildings Local roads and streets 1 Lawns and 1 landscaping 106*: Brownsto 107*: Uracca Mergel 108*: Uracca Mergel 109*, 110*: Uracca Mergel 111 Vandamore 112 Woodhall 113 Woosley 114 Yamo 115 Yamo 116 Yamo 117*. Yeljack Severe: cutbanks cave, slope. Severe: cutbanks cave, large stones. Severe: large stones. Severe: cutbanks cave, large stones. Severe: large stones. Severe: cutbanks cave, large stones, slope. Severe: large stones, slope. Severe: depth to rock, slope. Severe: depth to rock, large stones, slope. Severe: depth to rock, slope. Severe: cutbanks cave. Severe: cutbanks cave. Severe: cutbanks cave, slope. Severe: slope. See footnote at end of table. Severe: slope. Severe: large stones. Severe: large stones. Severe: large stones. Severe: large stones. severe: slope, large stones. Severe: slope, large stones. Severe: slope. Severe: slope, large stones. Severe: slope, Slight Moderate: slope. Severe: slope. Severe: slope. Severe: slope. Severe: large stones. Severe: - large stones. Severe: large stones. Severe: large stones. Severe: slope, large stones. Severe: slope, large stones. Severe: depth to rock, slope. Severe: depth to rock, slope, large stones. Severe: depth to rock, slope. Slight Moderate: slope. Severe: slope. Severe: slope. Severe: slope. Severe: large stones. Severe: large stones. Severe: slope, Large stones. Severe: slope, large stones. Severe: slope, large stones. Severe: slope, large stones. Severe: slope. Severe: slope, large stones. Severe: slope. Slight Severe: slope. Severe: slope. Severe: slope. Severe: slope. Severe: large stones. Severe: large stones: Severe: I large stones. Severe: large stones. Severe: slope, large stones. Severe: slope, large stones. Severe: slope. Severe: slope, large stones. Severe: slope. Slight Moderate: slope. Severe: slope. Severe: low strength, slope. Severe: large stones, slope. Severe: large stones, droughty. Moderate: large stones, droughty. Severe: large stones, droughty. Moderate: large stones, droughty, slope, Severe: large stones, droughty, slope. Severe: slope. Severe: slope. Severe: slope, large stones. Severe: slope. Slight. Moderate: slope. Severe: slope. Severe: slope. 1 1 1 204 Soil Survey TABLE 11. --SANITARY FAC: T Es--Contifued Soil name and crap symuol Septic tank Sewage lagoon 1 Trench 1 Area absorption areas A sanitary 1 sanitary fields 1 landfill 1 landfill Daily z..:e.: for landfill II 29*, 30•: Rock outcrop. 31 Dotsero II32 Dotsero II rarsman- 1 Rock outcrop. L rpedrado 35 1 Empedrado c" £ npedrado 1 Etoe Evanston IIy, 40, 41 Evanston r uvaquents e 11Frownsto- 1Drefle--- rownsto II Severe: slope. Slight Severe: depth to rock, slope. Slight Moderate: slope. Severe: slope. Severe: slope. Moderate: peres slowly. Severe: slope. Severe: flooding, wetness, poor filter. Moderate: pares slowly, slope. Moderate: slope. Severe: slope. Severe: slope. IISee footnote at end of table. Severe: Severe: seepage, ( seepage, slope. 1 slope. Severe: (Severe: seepage. 1 seepage. Severe: seepage, depth to rock, slope. Severe: seepage. Severe; seepage, elope. Severe; seepage, slope. Severe: slope. Moderate: seepage, slope. Severe: slope. severe: seepage. flooding.. Severe: slope. Severe: seepage, slope. Severe: slope. Severe: seepage. slope. Severe: depth to rock, slope. Severe: seepage, slope. Severe: seepage. Severe: depth to rock, slope. Severe: (Severe: seepage. seepage. Severe: (Severe: seepage. 1 seepage. Severe: (Severe: seepage. seepage, slope. slope. Severe: Severe: slope, slope. large stonee. Slight Slight Severe: Severe:. slope. slope. Severe: Severe: flooding, flooding, seepage, seepage, wetness. witness. Moderate: slope. Moderate: slope. too sandy. Severe: slope. Severe: slope. Moderate: slope. Moderate: slope. Poor: slope. Fair: small stones. Poor: area reclaim, small stones, slope. Fair: small stones. Fair: small stones, slope. s:__ e. Poor: large stones. slope. Good. Poor; slope. Poor: seepage, too sandy, small steres. Fair: slope. (Poor: I small stones. Severe: IPoor: slope. I slope. Severe: IPoor: slope. I small stones. ( slope. 208 TABLE 11. --- v1TARY FACILITIES --Continued Soil name and map symbol 94x: Morva1 95*: Showalter Morval---- ------ Southace 97---- Southace 98, 99--___ Southece 100*: Scarman 1Tanna Pine111------ -___ 102*: Pinelli__....—..- 103x: Tanna---- Septic tank absorption fields Moderate: pares slowly. slope. Severe: peres slowly. slope. Severe: slope. Sewage lagoon I areas Soil Surrey Trench sanitary landfill Area sanitary landfill Daily cover for landfill Moderate: ;.arae stones. Moderate: slope, large stones. Severe: slope. Severe: depth to rock. Severe: depth to rock. Severe: depth to rock, peres slowly. Severe: pores slowly. Severe: I depth to rock, percs slowly. Severe: peres slowly. Severe: depth to rock, peres slowly, slope. See footnote at end of table. Severe: slope. Severe: slope, large stones. Severe: slope. Severe: seepage, large stones. Severe: seepage, slope. large stones. Severe: seepage, slope, large stones. Severe: depth to rock, slope. Severe: depth to rock, slope. Severe: depth to rock. Moderate: slope. Severe: depth to rock. slope. Severe: slope. Severe: depth to rock, slope. Moderate: slope, too clayey. Severe: slope, large stones. Severe: slope. Severe: large stones. Severe: large stones. Severe: slope, large stones. Severe: depth to rock. Severe: depth to rock. Severe: depth to rock. Slight Severe: depth to rock. Moderate: slope. Severe: depth to rock. slope. Moderate: slope. Severe: slope. Severe: slope. Slight Nod*rates slope. Severs: slope. Severn: depth to rock. Severe: depth to rock. Slight Slight Moderate: slope. Moderate: slope. Severe: slope. Fair: too clayey, small stones, slope. Poor: small stones, slope. Poor: slope. Poor. small stones. Poor: small stones. Poor: small stones„ slope. Poor: depth to rock, small stones. Poor: depth to rock. Poor: depth to rock. Good. Poor: depth to rock. Fait: scope. Poor: depth to slope. rock. 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Aspen -Gypsum Area, Colorado TABLE 11. --SANITARY FACILITIES --Continued Soil name and map sywmboJ. Septic tank absorption fields Sewage Lagoon areas Trench sanitary landfill Area sanitary landfill Daily cover for landfill 103*: Pineili. 104*: Tarriorthents Camborthids-------- Rock outcrop. 105*: Torriorthents------ Rock outcrop. ?0S*: Tridell e3rownato 107*; Uracca Merge! 108*: Uracca Mergel 109', 110 Uracca Merge1 Severe: pares slowly, slope. Severe: depth to rock, slope. Variable Severe: depth to rock., slope. Severe: poor filter,. slope. Severe: slope. Severe: poor filter, large stones. Severe: large stones. Severe: poor filter. large stones.. Severe: large stones. Severe: poor filter, slope, large stones. Severe: elope, large stones. See footnote at end of table. Severe: slope, Severe: depth to rock, slope. Variable Severe: depth to rock, slope_ Severe: seepage, sloe, large stones. Severe: seepage, slope, large stones. Severe: seepage, large stones. Severe: Large stones. Severe: seepage, slope, large stores. Severe: slope, large stones. Severe: seepage, slope, large stones. Severe: slope, large stones. Severe: slope. Severe: depth to rock, slope. Severe: slope. Severe: slope. Variable----------(Variable--------- Severe: depth to slope. Severe: rock, 1 slope.. ( Severe: slope. large stones. Severe: slope. Severe: seepage, large stones. severe: large stones. Severe: seepage, large stones. Severe: large stones. Severe: seepage. slope, large stones. Severe: slope, large atones. Severe: slope. Severe: slope. Severe: seepage. Poor: slope. Poor: depth to rock, small stones, slope. Variable. Po . depth to rock. email Stones. slope. Poor: slope. Poor: small stones, slope. Poor: seepage, large stones. Slight -----------(Poor: large stones. Severe: seepage. Moderate: slope. Severe: seepage, elope. Severe: slope. Peer: - seepage, large stones. Poor: large stones. Poor: seepage, large stones, slope. (Poor: large 1 slope 1 stones, 209 1 1 1 1 1 Aspen -Gypsum Area, Colorado TABLE 14.--ENGINEERIIIG INDEX PROPERTIES -=Continued Soil name and CDepthl USDA texture map symbol Invents 1 sieve number-- Liquid 1 Plas- 1 i Unified 1 AASHTO 1> 3 1 Classification IFrag- 1 Percentage passing 1 235 1126*, 27*, 28•i Southace---• 0-10 Very stony sandy ISM loam. 10-22 Extremely stony 13M sandy loam, veryl cobbly sandy loam. 22-60 Extremely stony ISM, GM loamy coarse 1 sand, very cobbly loamy 1 sand. In linchesl 4 Pct A-2, A-4 15-35 A-2, A-1 40-65 A-1 35-60 lig*, 30*s chard------_..__ 0-4 Clay loam-----_-- 1,Cµ A-6 4-33 Silty clay, siltylCH, CL A-7 clay loam, clay 1 I loam. 1 33 (Weathered bedrock) --- I 1 1 1 0-31 Gravelly sandy ISM, GM IA -1, A-2 I loam. 1 I 31-41 Gravelly sandy ISM, GM IA -1, A-2 loam. 41-10 Fine sandy loam, ISM, SM-SC,IA-4 I sandy loam, 1 ML, CL -MLI loam. ( I I 1 tsero !SM IA -1, A-2 ISM, GM IA -1, A-2 I 1. 1 SM, SH -SC, I A-4 I ML, CL -MLI 1 Rock outcrop. l-------------- otsero 1 1 ! 1:1 r I 0-7 (Sandy loam 7-41 Gravelly sandy i Loam. 41-60 Pine sandy loam, sandy loam, loam. £arsman---- 0-5 (Very stony sandy ISM. GM II loam. I 5-191 Very channery IGM-GC l loam, very I channery sandy 1 I 1 loam. very1 channery fine 1 sandy loam. 1 19 Unweathered 1 -- 1 bedrock. I 1 outcrop. 1 1 1 , 35, 36------- 0-5 (Loam IML N drado 5-40 Clay loam, sandy ICI.. SC clay loam, 1 gravelly clay 1 loam. I 40-60 Sandy loam, clay ISM, ML II i loam, gravelly 1 1 loam. I I r� footnote at end of table. A-2, A-4 A- 2 A-4 A-6 A-2, A-4 90-100 65-80 55-90 0 195-100 0 195-100 0 0 0 60-80 60-80 90-100 0 80-100 0 6❑ -80 0 90-100 10-20 5-25 0-10 0-10 0-10 60-85 35-55 u i limit i tic;ty 10 1 40 1 200 1 1 index I Pct 85-95 55-90 25-50 20-25 NP -5 60-75 35-50 15-30 20-25 NP -5 50-75 10-50 10-25 HP 95-100 95-100 55-75 55-75 90-100 75-95 55-75 90-100 50-75 30-40 90-100 90-100 35-50 35-50 70-85 80-95 80-90 15-35 15-30 40-65 40-60 20-35 35-50 115-30 70-85 40-65 45-70 125-40 20-35 110-25 I I 95-100195-100180-95 95-100165-95 155-90 95-100170-100155-80 ! 1 1 35-50 40-60 15-30 20-40 15-20 1 NP -5 15-20 1 NP -5 I 20-30 1 RP -10 15-20 1 NP -5 15-20 NP -5 20-30 25-30 25-30 55-75 : 30-35 40-70 i 30-40 1 25-60 I 25-30 NP -10 NP -5 5-10 5-10 10-20 HP -5 Aspen -Gypsum Area, Colorado TABLE 14. --ENGINEERING INDEX PROPERTIES—Continued Soil name and IDepthl USDA texture map symbol I I 94•, 95■: Showalter In 0-8 Very stony loam 8-39 Very cobbly clay loam, very gravelly clay, very cobbly clay. 39-60 Very gravelly sandy clay loam, gravelly loam, very cobbly clay loam. I Classification 2411 1 Unified GM -GC, GC, sC, SM -SC GC IFrag- Imenta AASHTO 1 ) 3 )inches) 4 Pct A-4, A-6 A-6, A-7 30-65 15-35 GM -GC, GC, A-4, A-6,,15-30 SC, SM -SC A-2 Norval--- ------ 0-7 Loam ML, 7-23 Loam. clay loam SC, 23-60 Gravelly clay IGC, loam, clay=oa:a,1 loam. 0-3 Cobbly sandy loamJSM-SC, SH 3-14 Gravelly loam ISM, SH-sC, I GMM -GC, GM 14-60 Very gravelly IGM, SM loam, very cobbly loam, very cobbly 1 sandy loam. 96, 97, 98, 99--- Southace 100•: Starley Starman 101*, 102•, 103*: 7anna— Pirelli CL -ML A-4 1 0-5 CL A-6 1' 0-10 SC, CL A-6 I 0-10 0-8 8-19 19 Very channery loam. Very channery loam, very channery clay loam. Unweathered bedrock. 0-6 Very channery loam. 6-16 Gravelly loam, dchannery loam, very channery loam. 16 I Unweathered I bedrock. 0-3 Silt loam -- 3-13 Silty clay loam, clay loam, clay.1 13-31 Silty clay loam, ICL clay loam. clay.) 31 Weathered bedrock) 1 0-7 Loam ICL -ML 7-22 Clay loam, silty ICL. CH clay loam, clay.) 22-60 Clay loam, loam, ICL, CL -ML silty clay loam.I 1GM-GC, IGM-GC, IGM IGM 1 1 1 CL -Mi, ICL See footnote at end of table. A-1, A-2 115-30 A-4 1 5-15 A-4, A-2,110-50 A-1 GC A-2, A-4 GC IA -2, A-4 A-1, A-2 A-1, A-2 A-4 A-6, A-7 A-6, A-7 A-4 A-7 A-6, A-4 0-15 0-15 0-15 0-15 Percentage passing 1 + sieve number -- 65-95 55-70 45-75 90-100 75-100 65-90 70-80 70-80 40-80 40-55 40-55 35-55 35-55 10 1 40 60-80 50-65 40-75 86-96 70-95 60-85 50-75 45-60 35-65 ILiquid 1 Plas- 1 limit 1 ticity 200 B 1 index i Pct 40-50 25-35 5-15 35-50 35-50 15-25 25-50 25-35 5-i 60-80 50-75 25-30 NP -10 60-85 36-70 30-40 10-. 40-65 35-55 25-35 10 65-75 40-50 20-35 20-25 NP -5 65-75 50-65 35-45 20-30 NP -10 35-75 25-65 15-45 25-35 NP -l:, 35-50 30-45 35-50 30-45 30-50 130-45 3D-50 30-45 25-40 25-40 20-35 20-35 25-30 25-35 30-40 30-40 5-10 5-15 5-10 5-10 0 95-100 95-100 90-100 70-90 20-25 5-10 0 95-100 95-100 90-100 70-95 35-50 15-30 95-100 95-100 90-100 70-95 35-50 15-30 0 75-100 75-100 65-90 50-75 25-30 5-10 0 75-100 75-100 65-90 55-85 45-55 25-35 0 75-100 75-100 65-90 55-85 25-35 5-15 1 142 Sail Survey 1 TAEL1 14. --ENGINEERING INDEX PROPERTIES --Continued I Iiii name ana IDepthl USDA texture map symbol I I'. 114-: 1'or.riorthent s--- 1 lamborthids----- 1 Rock outcrop. trriorthents--- 1 I ck outrop. 106x; Tridel1 II 1 1 1 1 1 lownato In 0-4 4-30 30 0-4 4-30 30 0-4 4-30 30 0-2 2-37 37-60 0-11 11-30 30-60 Classification. IFrag- 1 Percentage passing ! I lments I sieve number-- !Liquid 1 P1as- Unified AAsf4TO 1> 3 1 1 1 limit 1 ticity Iinchesl 4 10 40 1200 i I index Variable ML, SM, CL, SC Fine sandy loam. ISM, CL, loam, clay loam. 1 CL -ML, SM -SC Unweathered I -- bedrock. Variable Loam, clay loam Unweathered bedrock. ML, CL, CL -ML Variable ---------IML, SM, CL, SC Fine sandy loam, 1SM, CL, loam, clay loam. CL -ML, 5M -SC Unweathered --- bedrock. Stony sandy loam Very cobbly fine sandy loam.. extremely gravelly sandy loam, very stony fine sandy loam. Very gravelly sand, extremely gravelly sand, extremely cobbly sand. Stony sandy loam Very gravelly sandy loam, very cobbly sandy loam. Very gravelly loamy sand, gravelly sandy loam, very gravelly sandy loam.. 11 see footnote at end of table. CL -ML, SM -SC GM, GM -GC GP A-2, A-4 A-2, A-4, A-6 A-4, A-6 A-2, A-4 A-2, A-4, A-6 A-4, A-2 A-1, A-2 A-1 GM -GC, A-4, A-2 SM -SC GM A-1 GM. S4. A-1 GP -GM, 5P -SM 1 Pct 0-20 0-20 5-40 0-5 0-20 0-20 20-30 35-50 30-45 65-90 65-95 100 65-90 65-95 75-95 45-55 35-45 60-85 135-75 60-90 50-80 75-100 60-85 60-90 70-90 40-50 30-40 55-90 35-75 50-80 60-80 30-40 20-30 25-60 25-70 50-80 25-60 25-70 30-60 15-30 0-5 30-45 60-70 55-65 45-55 25-45 15-35 50-60 45-55 25-35 15-25 10-20 50-65 145-60 25-35 10-20 Pct 20-35 1 NP -15 15-35 1 NP -20 25-40 20-35 15-35 20-30 15-30 25-30 5-20 NP -15 NP -20 5-10 NP -10 NP 5-10 NP HP 1 1 1 1 248 Soil name and sap symbol TABLE 15. --PHYSICAL ANO CHEMICAL PROPERTIES OF THE SOILS--ConLlnued 1 1 IDepthlClay 1 1 Moist bulk density Permea- bility II 26*, 27*. 28*: Danlqui:st ' Soutnace II 29*, 30*: Dollard II Rock outcrop. 31 I7.:t9ezo potsero 11 33*: Eareman 1 Rock outcrop. 1134, 35, 36 13rnpedrado 137. Etoe 'A 39 Evanston 140, Evanston 42* IF luvaquent6 43., 44•: II Fore11e----- Brownsto-------- 1 1 In 0-6 6-13 13-60 0-10 10-22 22-60 0-4 4-33 33 0-31 31-41 41-60 0-7 7-41 41-60 0-5 5-19 19 0-5 5-40 40-60 0-8 0-24 24-60 0-14 14-31 31-60 0-12 12-25 25-60,. 0-10 10-24 24-60 0-6 6-30 30-60 D-4 4-11 11-30 30-60 Pct g/cc 12-20 20-35 7-20 5-20 5-20 2-15 35-40 35-50 10-18 10-18 15-25 10-18 10-18 15-25 10-20 5-18 15-27 20-35 15-30 10-23 10-20 20-25 15-27 18-35 18-27. 15-27 18-35 18-27 4-30 10-35 0-5 15-27 18-35 18-30 10-20 15-20 15-20 5-15 1.25-1.35 1.25-1.40 1.25-1.45 1.40-1.50 1.45-1.55 1.60-1.70 Sail Survey 1 1 1 1 lAvailablel Soil !Salinity' Shrink- ! water Ireactionl 1 swell (capacity 1 1 1potential In/hr1 lnlin 1 pH Ir hos/cml 2.0-6.0 0.6-2.0 >6.0 2.0-6.0 2.0-6,0 >20 1.20-1.3010.06-0.2 1.30-1.4010.06-0.2 1.30-1.40t 1.40-1.501 1.40-1.501 1.30-1.401 1.40-1.501 1.40-1.501 1.40-1.55 1.40-1.55 1.35-1.45 1.40-1.55 1.40-1.55 1.35-1.45 1.40-1.50 1.45-1.55 1.25-1.35 1.35-1.45 1.35-1.45 1.25-1.35 1.35-1.45 1.35-1.45 1.20-1.50 1.40-1.60 1.60-1.70 1.15-1.25 1.25-1.35 1.25-1.35 1.35-1.45 1.25-1.35 1.35-1.45 1.35-1.45 See footnote at end of table, 2.0-6.0 2.0-6.0 2.0-6.0 2.0-6.0 2.0-6.0 2.0-6.0 2.0-6.0 2.0-6.0 0.6-2.0 0.6-2.0 2.0-6.0 0.6-2.0 0.6-2.0 0.6-2..0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-20 0.6-2.3 >20 0.6-2.0 0.6-2.0 0.6-2.0 2.0-6.0 0.6-2.0 2.0-6.0 2.0-6.0 0.06-0.10 0.06-0.11 0.03-0.05 0.08-0.10 0.04-0.06 0.02-0.04 0.17-0.19 0.13-0.18 0.08-0.10 0.07-0.09 0.11-0.18 0.10-0.14 0.07-0.09 0.11-0.18 0.06-0.09 0.04-0.09 0.16-0.18 0.19-0.21 0.11-0.13 0.16-0.18 0.10-0.14 0.05-0.11 0.15-0.10 0.16-0.20 0.16-0.18 0.15-0.18 0.16-0.20 0.16-0.18 0.07-0.16 0.10-0.18 0.04-0.09 0.16-0.18 0.16-0.21 0.16-0.18 0.08-0.10 0.11-0.13 0.06-0.08 0.05-0.10 6.6-7.8 6.6-7.8 7.9-9.0 7.9-8.4 7.9-8.4 7.9-8.4 7.4-8.4 7.9-9.0 6.6-8.4 7.9-8.4 7.9-8.4 6.6-8.4 7.9-8.4 7.9-8.4 7.4-8.4 7.4-9.0 6.6-7.3 6.6-7.8 7.9-8.4 6.1-7.3 6.1-6.5 6.1-7.3 6.1-7.8 6,6-8.4 7.9-9.0 6.1-7.8 6.6-8.4 7.9-9.0 7.4-8.4 7.4-8.4 7.4-8.4 6.6-8.4 6.6-8.4 7.9-9.0 7.4-0.4 7.4-9.4 7.4-4.4 7.1-8.4 <2 Low <2 Low <2 Low <2 <2 <2 <2 <2 Erase.... wind 1 facerz erodi-(Organic uilityl matter K 1 7 group Low--- Low- High------- Hier, 0.05 0.02 0.02 0.10 0.02 0.02 0.37 0.37 <2 Lor -------l0.10 <2 Low -------10020 <2 Low -------10.24 1 <2 Low -------10.20 <2 Lor -------10.20 <2 Low -------10.24 1 1 <2 Low 10.17 <4 Low 10.10 1 1 <2 Low 10.24 <2 Moderate 10.24 <2 Low 10.17 <2 Low 10.37 <2 Low 10.15 <2 Low 10.15 1 <2 Low 10.28 <2 Moderate 10.37 <2 Low 10.37 1 <2 Low 10.28 <2 Moderate 10.37 <2 Low 10.37 <8 <8 <2 <2 <2 <2 <2 <2 <2 <2 Low Low Low Law ------- Moderate Low Low 0.20 0.28 0.05 0.32 0.37 0.37 0.10 0.20 0.05 0.10 5 2 2 8 3 4L Pet 1-3 1-3 1-2 5 5 3-6 5 5 5 5 5 5 5 5 5 3-6 5 <1 5 2-4 5 5 1-3 2-4 5 2-4 3 <1 5 .5-1 3 1-2 Aspen -Gypsum Area, Colorado TABLE 15. --PHYSICAL AND CHEMICAL PROPERTIES OF THE SOILS --Continued 251 Soil name and map symbol I I I I 1DepthlClay 1 Moist I I 1 bulk I I 1 1 density 1 93 Rogert 94*, 95*: Showalter Marvel 96, 97, 98, 99--- Southace 100*: Starley Starman 101*, 102*, 103*: Tanna Pinelli 104*: Torr orthents -- Camborthids Rock outcrop. 105*: Torriorthents---- Rock outcrop. 106*: Tridell In 0-6 6-17 17 0-8 8-39 39-60 0-7 7-23 23-60 0-3 3-14 14-60 0-8 8-19 19 0-6 6-16 16 0-3 3-13 13-31 31 0-7 7-22 22-60 0-4 4-30 30 0-4 4-30 30 0-4 4-30 30 0-2 2-37 37-60 Pot 1 g/cc 5-15 5-18 20-25 35-45 20-30 15-27 25-35 25-35 10-20 15-25 10-27 18-27 18-35 15-23 20-27 20-27 35-45 35-45 18-27 35-50 18-35 10-30 5-35 20-35 10-30 5-35 10-15 5-15 0-5 1.30-1.40 1.40-1.50 1.30-1.35 1.15-1.20 1.25-1.30 1.30-1.40 1.40-1.50 1.40-1.50 1.25-1.35 1.45-1.55 1.40-1.50 1.25-1.35 1.25-1.35 1.25-1.35 1.35-1.45 1.15-1.25 1.20-1.30 1.20-1.30 1.15-1.25 1.15-1.30 1.20-1.35 1.20-1.30 1.30-1,50 1.40-1.50 1.20-1.30 1.30-1.50 1.25-1.35 1.35-1.55 1.35-1.55 See footnote at end of table. Permea- bility In/hr 2.0-6.0 >6.0 0.6-2.0 0.06-0.2 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 2.0-6.0 0.6-2.0 2.0-6.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.2-0.6 0.06-0.2 0.06-0.2 0.6-2.0 0.2-0.6 0.2-0.6 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 2.0-6.0 6.0-20 1 1 I I !Available) Soil ISalinityl Shrink - 1 water Ireactionl I swell (capacity I 1 (potential I In/in aH Immhos/cml 0.05-0.07 0.05-0.07 0.08-0.12 0.10-0.12 0.08-0.13 0.14-0.17 0.14-0.21 0.08-0.18 0.07-0.10 0.09--0.12 0.03-0.7 0.08-0.10 0.08-0.10 0.09-0.11 0.09-0.11 0.16-0.18 0.15-0.17 0.15-0.17 0.16-0.18 0.19-0.21 0.19-0.21 0.06-0.10 0.10-0.18 0.12-0.16 0.06-0.10 0.10-0.18 0.11-0.13 0.06-0.10 0.06-0.10 6.1-7.8 6.1-7.8 6.6-7.8 6.6-7.8 7.4-8.4 7.4-8.4 7.4-8.4 7.4-8.4 7.4-8.4 7.4-8.4 7.9-9.0 6.6-7.8 7.4-8.4 7.4-9.0 7.4-9.0 6.6-7.8 6.6-7.8 7.4-8.4 6.6-7.8 6.6-8.4 7.9-9.0 6.1-8.4 6.1-8.4. 6.1-8.4 6.1-8.4 6.1-8.4 6.1-8.4 7.4-8.4 7.9-9.0 7.9-9.0 <2 <2 <2 <2 <2 <2 <4 <4 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <4 <2. <2 <2 <2 <2 <2 <2 <2 <2 Low Low ErosioniWind 1 factorslerodi-)Organic I Ibilityl matter K I T (group 1 Low Moderate Low Low Moderate Moderate Low Low Low Low Law Low ------- Low High High Low Moderate Moderate Law Moderate Low Low Low Low 0.10 1 0.05 0.10 3 0.05 0.15 0.37 5 0.37 0.28 0.10 5 0.10 0.10 0.05 1 0.10 0.05 1 0.05 0.28 2 0.32 0.37 0.32 5 0.37 0.37 0.28 1 0.32 0.28 0.28 0.32 0.15 0.10 0.02 1 3 8 8 4 6 6 7 7 8 Pot 2-4 2-3 1-2 1-3 2-9 1-2 2-4 1-2 <1 <1 <1 1-4 252 1 1 1 1 1 1 1 1 1 Woodhall 113 Woosley 1 1 1 1 1 1 * TABLE 15. --PHYSICAL AND CHEMICAL PROPERTIES OF THE SOILS --Continued Soil name and map symbol 106*: Brownsto 107*, 108*: Uracca Mergel 109*, 110*: Uracca Mergel 111 Vandamore 112 114, 115, 116---- Yamo 117*: Yeljack Callings 118 Youga 119 Zillman DepthIClay In Pct 0-11 11-30 30-60 0-8 8-15 15-60 0-8 8-20 20-60 0-6 6-12 12-60 0-7 7-18 18-60 15-20 15-20 5-10 5-15 18-35 0-5 10-25 18-25 18-25 5-15 18-35 0-5 10-25 18-25 18-25 0-1 10-15 7-27 6-25 27 { 0-5 5-25 25 0-4 4-25 25 0-8 B-14 14-60 0-10 10-32 32-60 0-6 6-12 12-34 34-60 0-12 12-28 28-60 0-5 5-12 12-24 24-60 15-25 20-35 18-25 28-35 15-25 20-30 20-30 15-20 27-30 30-35 14-18 10-15 35-45 25-30 15-27 20-35 20-35 10-25 5-18 20-35 18-30 Moist bulk density g/cc 1.25-1.30 1.25-1.30 1.45-1.55 1.40-1.50 1.30-1.40 1.55-1.65 1.30-1.35 1.35-1.45 1.35-1.50 1.40-1.50 1.30-1.40 1.55-1.65 1.30-1.35 1.35-1.45 1.35-1.50 1.40-1.45 1.35-1.45 1.25-1.35 1.35-1.45 1.05-1.25 1.15-1.35 1.35-1.40 1.35-1.40 1.40-1.45 1.15-1.25 1.20-1.30 1.20-1.30 0.94-0.98 1.00-1.02 1.05-1.07 1.10-1.15 1.35-1.45 1.35-1.45 1.35-1.45 1.35-1.40 1.45-1.50 1.35-1.40 1.35-1.40 1 1 I 1 Permea- (Available' Soil (Salinity' Shrink- bility I water (reaction1 swell Icapacity 1 1 (potential In/hr 1 in/in pH lm,hoslcml 0.6-2.0 0.6-2.0 2.0-6.0 2.0-6.0 2.0-6.0 6.0-20 0.6-2.0 0.6-2.0 0.6-2.0 2.0-6.0 2.0-6.0 6.0-20 0.6-2.0 0.6-2.0 0.6-2.0 2.0--6.0 2.0-6.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 0.2-0.6 0.2-0.6 0.6-2.0 0.6-2.0 0.06-0.2 0.2-0.6 0.6-2.0 0.6-2.0 0.6-2.0 0.6-2.0 2.0-6.0 0.6-2.0 0.6-2.0 0.09-0.10 0.11-0.12 0.04-0.09 0.08-0.11 0.06-0.08 0.04-0.05 0.12-0.14 0.06-0.08 0.04-0.06 0.08-0.11 0.06-0.08 0.04-0.65 0.12-0.14 0.06-0.08 0.04-0.06 0.08-0.11 0.06-0.08 0.10-0.14 0.10-0.14 0.16-0.18 0.19-0.21 0.13-0.17 0.13-0.17 0.13-0.17 0.17-0.19 0.18-0.20 0.18-0.20 0.13-0.15 0.08-0.10 0.09-0.11 0.07-0.09 0,06-0.18 0.12-0.18 0.12-0.14 0.12-0.14 0.10-0.12 0.08-0.10 0.08-0.10 7.9-8.4 7.9-8.4 7.9-9.0 6.6-7.8 6.6-8.4 7.4-8.4 7.9-8.4 7.9-8.4 7.9-8.4 6.6-7.8 6.6-8.4 7.4-8.4 7.9-8.4 7.9-8.4 7.9-8.4 7.4-8.4 7.4-8.4 6.1-7.3 6.1-7.3 6.1-7.8 6.6-7.8 7.4-8.4 7.4-8.4 7.9-8.4 6.1-7.3 6.1-7.3 6.1-7.3 6.1-7.8 6.1-7.8 6.1-7.8 6.6-7.8 6.1-7.8 6.1-7.8 6.1-7.8 7.4-7.8 7.4-7.8 7.4-7.8 7.9-8.4 <2 <2 <2 <2 <2 <2 <2. <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 Low Low Low Low Low Low Low Low Low Low Low Low Low Low Low Low Low Low Low Low Moderate ' Low Low Low Low Moderate Moderate Lo w Low Moderate Low Low Moderate Moderate Low Soif Survey 1 ErosionIWind 1 factorslerodi-1Organic 1 1bilityl matter 1 K 1 T 'group I 1 1 1 Pct 0.15 3 B 1-2 0.10 0.05 0.10 0.17 0.10 0.15 0.10 0.05 0.10 0.17 0.10 0.15 0.10 0.05 0.10 0.20 0.17 0.20 0.37 0.43 0.28 0.28 0.28 0.37 0.32 0.32 0.24 0.17 0.15 0.15 0.24 0.20 0.17 0.10 0.10 0.05 0.05 2 4 2 4 1 2 2 5 5 2 5 4 4L 5 4L 8 6 5 6 5 5 5 1-3 2-4 1-3 2-4 1-2 2-4 2-3 <1 2-5 4-6 2-5 1-3 See description of the map unit for composition and behavior characteristics of the map unit.. 1 1 1 m 1 1 1 1 1 1 1 1 1 1 TABLE 16. --SOIL AND WATER FEATURES --Continued soil name and map symbol 11*, 18*, 19*: Cochetopa-------- Antrobus 20 Coulterg 21*, 22*: Curecant1 Fughes 23, 24 Cushool 25*: Cushool Aentsac 26*. 21*, 28*: Dahlquist Southace 29*, 30*: Dollard Rock outcrop. 31. 32 Dotscro 33•: Ea rsman Hydro- logic group Rock outcrop. 34, 35, 36 Empedrado 37 Etoe 38, 39, 40, 41 ---- Evanston Flooding 1 1 1 r 1 corrosion 1 High water table 1 Bedrock 1 1 Risk of I 1 1 1 1 Frequency 1 Duration (Months 1 Depth 1 Kind (Months 1 1 1 1 1 1 1 1 Ft p 1 C-- None-------- None one-------- None 13 None ------.r 8 None C None C None C None D None 8 None B None C None B None D None B None 1i Norie None See footnote at end of table. >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 1 I I Potential 1 1DepthlHard- I frost iuncoated 1 ness 1 action 1 steel In 1 1 1 >60 >60 >60 >60 >60 20-40 20-40 8-20 >60 >60 20-40 Concrete Moderate--- Moderate Low. Moderate--- High----- Low. Moderate-- High--- High. Moderate--- Moderate Moderate. Moderate--- Moderate Low. Soft Low High Moderate. Soft Low High Moderate. Hard Moderate--- High Law. Low High Low. Low-- High Low. Soft Low High Low. >60 Moderate--- High Low. 10-20 Hard Low -- High----- Low. >60 Moderate- High Low. >60 Moderate--- Moderate Low. >60 Low High Low. CJ) Q co c 2 0 69 Soil name and map symbol Kilgore 70, 71. 72, 73---- Kobar 74 Leavittville 75 Millerlake 76, 77 Mine 78 Miracle 79, 80, 81 Moen 82, 83 - Monad 84, 85. 86 14orval 87*: Morval Tridel1 881:. Moyerson- Rock outcrop. 89, 90, 91 -------- Mussel 92 Redrob 93 Rogers 94*. 95•: Showalter -------- TABLE 16. --SOIL AND WATER FEATURES ---Continued 1 Flooding High water table 1 Bedrock I 1 Risk of corrosion Hydro- 1 1 1 logic 1 Frequency 1 Duration (Months 1 Depth group 1 1 1 I Occasional None None- None None None None None None---- None None None None Rare -__--- None None see footnote at end of table. Very brief May -Sep Ft 1.0-3.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 1.5-4.0 >6.0 >6.0 Kind (Months Apparent Apparent Jan -Dec Jan -Dec 1 1 Potential I DepthlHard- 1 frost (Uncoated (Concrete nese 1 action 1 steel In 1 >60 >60 40-60 Soft >60 >60 20-40 Hard 20-40 Hard >60 >60 >60 >60 10-20 Soft >60 >60 10-20 >60 Hard High Low Moderate - Moderate Mode te- Moderate Moderate Moderate- Moderate--- Low------- Moderate-- Moderate- Low Low- -- 1Moderate--- 1 Moderate High High High High Moderate Moderate High High High High High High Moderate High ----- I Low. High. Low. Low. Moderate. Low. Low. Moderate. Low. Low. Hoderate. Low. Low. Low. Low. Moderate. CA 0 e 5 m i um gm Es in me in— i on r l— r—_— am —1 N MI N E M MI M MN N N = N - Soil name and map symbol 94*. 95': Norval 96, 97, 90, 99---- Southace 100': Starley Starman---------- 101*, 102*, 103': Tanna---- -----__-� Pinelll-------- -- 104*: Torriorthents---- Camborthids Rock outcrop. 105*: TorriorthentsRock outcrop. 106*: Tridel1 Rrownsto- ------ 107*, 108•, 109*, 110*: Uracca Mergel 111 Vandamore 112 woodhall 113 Woosley Hydro- logic group D D 0 0 D b 8 8 8 8 e c TABLE 16.--SO11. ANO HATER FEATURES--Continuued Flooding I I Frequency I Duration (Months 1 Depth I I I High water table I Bedrock 1 1 Risk of corrosion INone-------- I None None None ------� None None None None None None -------- None None None None None See footnote at end of table. Ft >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 >6.0 1 1 1 Potential I Kind }Months IDepthlHard- 1 frost (Uncoated (Concrete I I I ness I action I steel I In >60 >60 Moderate--- Low- 8-20 Hard Low 6-20 Hard Moderate 20-40 Soft Low >60 Low 4-30 Hard Low 15-60 Law 4-40 Hard Low >60 --- Moderate >60 Moderate >60 Low >60 Moderate 20-40 Hard Moderate 20-40 Hard .. 20-40 Hard Moderate High----- High High High High High High High - High Low. Low. Low. Low. Low. Low. Low. Law. Low.. High Moderate. High Low. High Low. Moderate Low. Moderate Low. Moderate Low. High Low. opeaoioo 'ieaiy wnsdd j-uadsy — — r — M — i I E MIN — — r — — Mr NM — gani C f1 r1 fl Piooaff No-a1co a V1giw,' 7.2 v i. Q uo "^G6'811� avi 7 R.. z 2 e- a�9s- w °� p o Sw� _ a3 ^gw--R�N. R. v: 'ti' m 2 VR - r4 - g� tn9o.,5R." Rg g. w_ P to,- - w,1b g.l�p 5 Ino •a • N g 9 5' m mR Qom`,, 2:-,7,e' w F. - fJ a 6.4 0. � 855x,ARoW1 �_� 3t i o. n n' g Yt = � T " au o s▪ o � S ▪ sy STAN CLAUSON ASSOCIATES, I,LC 200 gest Main Street Aspen CO. 0io11 Telephone: (97O) 92.5-2923 Far: [670 920-1628 Web: wmnscaplalthkes com Cow ill Subdivision Missouri Heights— Garfield County, Colorado Sketch Plan Submittal Owner information: Ursula Cowgill Telephone: (0700811-2488 Po Box 1127 Carbondale, Colorado 81823 }ATE: 19 November 2001 REVISIONS: 19 April 2002 SHEET: 1 of 1 1 1 1 1 Attar farchatuatie Lan 1 ext a Sac.= 13 roasono 7South Arc,m SS Weat of the 611 Prrapal Woman ano ant 'new Awn Pot al Loi 13 n Siecaan IS. Tomah* 7 Scultt ..IT76mviWen M the GO Prtncipell'avnaan Garead County. Camases, and toot malt oasuoularly do -satyr( ds tglao$ Savor -rag at the Northwest Carney of sald Lot 13 wilemee tram cop found m pun* and property merited for the Reelheost Caner of end Suction 13 bare N 804 het 11-.,c* N aa'46'49E 1360 29 feel alongthu Norlhady boundInv oidLt 13. Nato S '13'25E 700 CIO tore. theme N aa•16"40-£ Ts as feet thew.* 513043`20C'E 67382 feet toe pot( In a isms ars ant srsrl wr.e. Pence 5 WV -AMY 125854 feel on vadfoncalme. Mance S 58•40'411.N 539.59 feel on sad Sondem tnence Math 745133 Net alarasaN0731 72 91 It, trance S SMCP'17E 150 (1? ever SwopIt1P11E seals Feel to 4 pont wo 0u Smutreey ncft-mi-mer 6N/ .0 Wetted County Road Me, 103 as we and n item,9 83212Eel 42 qt.! eigswy tar; se-41E90y reptarwray ins (farce5 erss-4,--s .56 33 fee almN saki SARAYNtrhf AWYt-Ld-Way arra Sande S cirtry24-E 15 95 feet 10 5141 pont 649erreno. cornuno 5Z28 'LISS MOM CA, MSS 1 1 1 1 1 1 1 1 1 IMPROVEMENT SURVEY CERTIFICATE 1 1 1 _1, 1 A A.AAIrtiicr-WA 3,3( TM. ,ader !IflCI 7=13 V" -alar 10, or-o—ntWts rte epee not 1 1 LINES IN SPACE LAND SURVEYS. IMPROVEACNT SURVE-Y 4020 COUNTY ROAD iO3 CARIgINDALE COLORADO DIVES IV SPACE svonEr livcrow 1 LS. .49' i + I J sier e CASSaCtatE MO 9/SP-S53,30SY A4Tr over sour r - ea as ea govi 8-2e-02; 1 1 ; 18Ah1;z . - M. NGOne. iS7OG45 57O !i!! R E 0 U R C E RECEIVED ■■■■■ E N G I N E E R 1 N G I N C. AUG 2 9 1002 Robert Noone, Esq. PO Box 39 Glenwood Springs CO 81602 RE Cowgill Subdivision Dear Bob: COUNTY August 20, 2004141w At your request Resource Engineering, Inc. calculated the water demand for the proposed 6 lot Cowgill Subdivision in Garfield County. The assumptions used in the calculation of water demand are as follows: • Six primary residences and six ADU's at 3.5 persons per unit, 100 gpd/person. • 2,500 s.f. of fawn and landscape irrigation per lot. Total of 15.000 s.f. • 2 horses per lot, Total of 12 horses The total annual water demand is 5.67 AF. Total depletions are 1.09 AF.. A copy of the water requirements table is attached. The water supply will be provided by individual wells, one on each lot. The wells will be standard 15 gprn domestic wells. Sincerely, RESDLZRCE ENGINEERING, INC. Paul S. Bussone, P.E. Water Resource Engineer PSB/mmrn E•\C1,ontlroL bn cowglll sub.doc Attachment 0ontulting Engineers and Hydrologists 9CJ Colorado Avenue • Glenwood Springs, CO e1 801 ■ (S701945-6777 S Fax(7O)S4-1l37 4 COWGILL SLIBONIStON WATER REQUIREMENTS {acre feet) Assumptions (11 (2) {3) NUMBER OF RESIDENCES" N persons/residence N gallonsfpersonlday 12 3.5 100 Cornu erclatlOther Demand (a0. 0 000 (5) N of Livestock i 11 gals/day 12 Sq. Ft. of Lawn Irrigated Loam Application Rate (of/ac) 15000 2366 (9) (4) Acres of Crop Irrigated 0.00 Crop P pitcation Rale (aflac) 0.000 " 6 primary resk'ences and 6 ADU residences on six lots. % CU for Dornestic1Comrnercial % Lawn Irrig. Efficiency Consumption of Wig (a11ac) 5 60 1.893 (10) % Crap Irrig. Efficiency 60 Consumption o1 Irrigr. (af/ac) 0.000 (9-10) Elevation (feet) 6900 `To'ai Irxcries 5% Transit. Loss • 110 rr T 0 it S. Total Demand Consumptive Use (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12)' Domestic Commercial lawn Crop Domestic Commercial Lawn Crop Month In-house or (Other Irrigation Ir alion Lveslock TOTAL In-house or Other Imgalion Irrigation livestock TOTAL January 0.400 0 000 0.000 0.000 0.013 0Al2 0.020 0.000 0.000 0.000 0.013 0 034 February 0.361 0 000 0.000 0.000 0.011 0 372 0.018 0.000 0.000 0.000 0.011 0.031 March 0.400 0 000 0.000 0.000 0.013 0.412 , 0.020 0.000 0.000 0.000 0,013 0.034 April 0.387 0.000 0.017 0.000 0.012 0.416 0.019 0.000 0.013 0.000 0.012 0 04 May 0.400 0.000 0.156 0.000 0.013 0,568 0.020 0.000 0.125 0.000 0.013 0.165 June 0.387 0.000 0.203 0.000 0 012 0.602 0.019 0.000 0.152 0.000 0.012 0.203 July 0.400 0.000 0.190 0.000 0.013 0.602 0.020 0.000 0.152 0.000 0.013 0.194 August 0.400 0.000 0.121 0.000 0.013 0.533 0.020 0.000 0.097 0.000 0.013 0.136 September 0.387 0.000 0.104 0.000 0 012 0.502 0,019 0.000 0.083 0.000 0.012 0.120 October 0.400 0.000 0.027 0.000 0013 0.439 0.020 0.000 0.022 0.000 0.013 0.057 November 0 38 0.000 0.000 0.000 0.012 0399 0.019 0.000 0.000 0.000 0.012 0.033 December 0.400 0.000 0.000 0.000 0,013 0.412 0.020 0.000 0.000 0.000 0.013 0.034 TOTALS -> 4.704 0.000 L 0.1318 0.000 ' 0.148 5 670 0.235 0.000 0.655 0.000 0.148 1.090 Assumptions (11 (2) {3) NUMBER OF RESIDENCES" N persons/residence N gallonsfpersonlday 12 3.5 100 Cornu erclatlOther Demand (a0. 0 000 (5) N of Livestock i 11 gals/day 12 Sq. Ft. of Lawn Irrigated Loam Application Rate (of/ac) 15000 2366 (9) (4) Acres of Crop Irrigated 0.00 Crop P pitcation Rale (aflac) 0.000 " 6 primary resk'ences and 6 ADU residences on six lots. % CU for Dornestic1Comrnercial % Lawn Irrig. Efficiency Consumption of Wig (a11ac) 5 60 1.893 (10) % Crap Irrig. Efficiency 60 Consumption o1 Irrigr. (af/ac) 0.000 (9-10) Elevation (feet) 6900 `To'ai Irxcries 5% Transit. Loss • 110 rr T 0 it S. COWVOILL SUBDMSION WATER REQUIREMENTS (acre feet) Assumptions (1) (2) (3) NUMBER OF RESIDENCES"' 12 personshesidenoe 3.5 # , alfonslda 100 Commercial/Other demand (al) 0.000 Sc. FI. of Lawn Irrigated 15000 Lawn Application Rate (affac) 2.366 (5) ff of Livestock ® 11 gals/day 12 (9) (10) % CU for Domestic/Commercial ic/Commercial 5 % Lawn brig. Efficiency Consumption of lrrlg. (affac) 8o 1.893 % Crop Irrig. Efficiency Carlsurept}on of !nig, (affec) 80 0.000 (4) Acres of Crop Irrigated Crop Application Rate (ellac) 0.00 D.000 (9-10) Etevalion (feet) 6900 " 6 primary residences and 6 ADU residences on stir lots. 'Total Includes 5% Trarrsd Loss z 0 c Total Demand Consumptive Use (1) (2) (3) (4) (5) (6) Domestic Commercial Lawn Crop (7) (8) (9) (10) (11) (12)` Domestic Commercial Lawn Crop Month I In-house or Other Irrigation Irrigation Livestock TOTAL 1 in-house or Other Irrigation Irrigation Livestock. TOTAL January 0.400 0.000 0.000 0.000 0.013 0.412 0.020 0.000 0.000 0.000 0.013 0.034 February 0.361 0.000 0.000 0.000 0011 0.372 0.016 0.000 0.000 0.000 0.011 0.031 March 0.400 0.000 0.000 0.000 0.013 0,412 0,020 0.000 0.000 0.000 0.013 0.034 April 0.387 0.000 0.017 0.000 0.012 0.416 0.019 0.000 0.013 0.000 0.012 0.047 May 0.400 0,000 0.156 0.000 0.013 0.568 0.020 0.000 ' 0.125 0.000 0.013 ' 0.165 June 0.387 0.000 0203 0.000 0.012 0.802 0.019 0.000 0.162 0.000 0.012 0.203 July 0.400 0.000 0.190 0000 0.013 0.602 0.020 0.000 0,152 0.000 0.013 0.194 August 0.400 0.000 0.121 0.000 0.013 0,533 0.020 0.000 0.097 0.000 0.013 0.136 September 0.387 0,000 0.104 0.000 0.012 0.502 0.019 0.000 0.083 1 0.000 0.012 0.120 October 0.400 0.000 0.027 0.000 0.013 0.439 0.020 0.000 0.022 0.000 0.013 0.057 November 0.387 0.000 0 000 0.000 0.012 0.399 0,019 0,000 0.000 0.000 0.012 0.033 December 0.400 0.000 0,000 0.000 0.013 0.412 0.020 0.000 0.000 0.000 0.013 0.034 TOTALS -a 4.704 0,000 0.818 0.000 0.148 5.670 0.236 0.000 0.655 0.000 0.148 1.090 Assumptions (1) (2) (3) NUMBER OF RESIDENCES"' 12 personshesidenoe 3.5 # , alfonslda 100 Commercial/Other demand (al) 0.000 Sc. FI. of Lawn Irrigated 15000 Lawn Application Rate (affac) 2.366 (5) ff of Livestock ® 11 gals/day 12 (9) (10) % CU for Domestic/Commercial ic/Commercial 5 % Lawn brig. Efficiency Consumption of lrrlg. (affac) 8o 1.893 % Crop Irrig. Efficiency Carlsurept}on of !nig, (affec) 80 0.000 (4) Acres of Crop Irrigated Crop Application Rate (ellac) 0.00 D.000 (9-10) Etevalion (feet) 6900 " 6 primary residences and 6 ADU residences on stir lots. 'Total Includes 5% Trarrsd Loss z 0 c