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Home My WebLink About1.0 ApplicationI I I I I I PRELIMINARY PLAN FOR CLINETOP RANCH SUBDIVISION OWNER AND APPLICANT: Mr. and Mrs' RalPh Hubbell ""'---401 23td Street - '^' Grenwo od alt#t"r:^tad o 8 1 6o I PLANNER: Ron Liston Land Design PartnershiP e18 cooper e;iJr::, 81601 G r e nwoo d [?tlS;i _-iz'id- - ENGINEER: Mi chaer q "t i3;E"ilt311, " ".Jerome"x9"fijil;;;1602 Grenwood ?Jrd*:r;;o-- March 25, 1998 LAND DESIGN PARTNERSHIP 918 CooperAvenue, Glenwood Springs, CO 91601 97 0-945-2246 I F ax 970-945-4066 March 25, 1998 Eric McCafferty Garfield County Bldg. & ptanning 109 8th Street, Ste. 303 Glenwood Springs, CO 80601 Re Clinetop Ranch Subdivision Preliminary Plan Application Dear Eric Attached herewith are the plans and supplemental information as required for apreliminary plan application for the Clinetop Ranch Subdivision. The proposed two lot division is a resubdivision of Lot 3 of the Rigoli Subdivision located approximately nine miles northwest of New Castle on the east side of Main Elk Creek Road (Co.Rd. 242). EXISTING CONDlTIONS The proposed 24.76 acre subdivision site is zoned Agriculture/Residentia!/Rura! Density allowing two acre minimum lot sizes. Main Elk Creek traverses the easterly side of the property and isolates a few acres of land in the southeast corner of the site. The majority of the acreage of the site has a history of irrigated hay production w1h slopes of 4 to 10 percent falling from the northwest to the loutheast. Cottonwood trees and other riparian vegetation is found along the banks of Main Elk Creek. A small existing pond is located near the creek. Historically, irrigation water has been provided to the site from the Gline Top Ditch and the Cline Top Ditch No. 1. Water rights attached to the propefi are described in the attached Water Rights and Augmentation Plan Engineering Report prepared by Resource Engineering. PROPOSED SUBDIVISION The recently reviewed Sketch Plan for the Clinetop Ranch Subdivision proposed three lots. The intent of the Hubbell family was to create a lot for Ralph and Connie Hubbell and a lot for their son and daughter-in-law, Gary and Doris Hubbell with a third lot being created for potential sale in the future. Due to the imptications of property taxes, the third lot has been dropped and the herewith attached preliminary plan proposes only two single family residential lots. Each lot could potentially quifity foran accessory dwelling unit in addition to the primary residence although the Hubbeils do not anticipate building any accessory units now or in the near future. Other structures may include a horse barn and equipment shed. There will be ample opportunity for off street parking on these large lots with a minimum of four parking spaces provided for each !ot. Building envelopes have been shown on the preliminary plan. The primary purpose of these envelopes is to assure safe setbacks from Main Elk Creek. Oiner areas of the building envelopes are based on the required building setbacks within the Ag/Residential/Ru ral Density Zone District. WATER Domestic and limited irrigation water will be provided by individual wells. Water rights protection for these wells will be provided by an Augmentation Plan that is currentiy being processed through District 5 Water Court. A limited number of copies of the Augmentation Plan are included with this submittal. Both wells have been drilled. Hubbell Well No. 1 was drilled under Permit # 177757 and Hubbell Well #2 was drilled as a Test Well. Permit application has been made for Hubbeil Well Number 2. The results of the pump test for each well is summarized in the attached tetter from Resource Engineering. Hay fields will continue to be irrigated from the Cline Top Ditch Although the Hubbell family may continue to irrigate the property using the existing lateral ditches, the access easement has also been designated as anlrrigation easement to assure the deliver water from the Cline Top Ditch to Lot 2. SEWAGE TREATMENT Individual on site sewage disposal systems will be used for wastewater treatment. Percolation tests have been conducted on the site and the attached engineering report confirms the ability of each lot to accommodate an ISDS. I-AND DEDICATIONS There will be no common use lands or public land dedications within the proposed subdivision. Cash payments in accordance with current County schoo! dedication policy will be made in lieu of land dedications. PHASING The project will be constructed as a single phase deveropment. NATURAL ENVIRONMENT The Hubbells have initiated actions that will lead to the enhancement of the environment of the property. They have made application to and received approval from the Corps of Engineers to undertake steamside reconstruction and stabilization of Main Elk Creek. The property has also been enrolled in the Wildlife Habitat tncentives Program administered by the Natural Resources Conservation Service. Following is a general listing of the proposed enhancements: 1. Stabilization of the stream wil! enhance trout habitat.2. cottonwoods will be planted along the stream bank to promote bank stabilization through root growth and to provide added roosting and nesting habitat for raptors.3. Plant serviceberry, chokecherry, gambel's oak and native grasses in 20 foot wide wildlife zones to promote songbird and small mammal naoitat. 4 Dredge stagnant pond and provide water flow through the pond to provide habitat for native (and endangered) greenback cutthroat trout to be stocked.5. Fence stream banks to keep livestock from degrading the waterways.6. utilize rotation grazing practices to preserve the productivity of the agricultural fields and minimize erosion. WILDLIFE To my knowledge the Colorado Division of Wildlife did not offer comments on the Clinetop Ranch Subdivision Sketch Plan. tn early March, I spoke with Don Crane, the DOW Manager for the Main Elk Creek area. He requested that dogs be controlled and that wildlife movement be considered in the design of fencing. He was pleased to see the Wildlife Management Plan that was included with the Sketch Plan application. The management plan is attached herewith. ROAD IMPACT FEE Clinetop Ranch Subdivision will be required to pay a Road lmpact Fee under the newly adopted regulations. Based on the Traffic Study Area Map, the property is located in Area 4 which requires $104 per the Average Daily Traffic. Single family residences are designated as generating an average of 10 vehicle trips per day. The totat Road lmpact Fee for the subdivision will be $2080 or $1040 per residence. PROTECTIVE COVENANTS Protective covenants are currently being finalized by the project attorney and a draft of these covenants will be provided for County review as soon as they are avaitable. A final version of the covenants will be provided with the final plat submittal for the subdivision. These covenants will contain the standard restrictions that serve to protect the values of the property and the quality of life within the subdivision as well as areas of particular importance to this property which are summarized as follows: 1. Strict provisions for the control of dogs including direct owner control and kenneling.2. Limitations on large livestock tied to the carrying capacity of the land as determined by the standards of the local Natural Resources Conservation Service.3. Requirements for the control of noxious weeds.4. Provide for the joint maintenance of the common use access drive. lf you have any questions or require additional information please contact myself or Mike Gamba. Sincerely, Ronald B. Liston CLINETOP RANCH SUBDIVISION March 25, 1998 Page 3 of 81 INTRODUCTION: SECTION 4:50 A: SECTION 4:50 B: SECTION 4:50 C: SECTION 4:50 D: SECTION 4:50 E: SECTION 4:50 F: SECTION 4:50 G: SECTION 4:50 H: SECTION 4:501: SECTION 4:50 J: SECTION 4:50 K: SECTION 4:50 L: SECTION 4:50 M: SECTION 4:50 N: SECTION 4:50 O: SECTION 4:60 A: SECTION 4:60 B: SECTION 4:60 C: SECTION 4:60 D: SECTION 4:60 E: SECTION 4:60 F: SECTION 4:60 G: SECTION 4:60 H: SECTION 4:70 A: SECTION 4:70 B: SECTION 4:70 C: SECTION 4:70 D: SECTION 4:80: SECTION 4:91: SECTION 4:92: SECTION 4:94: APPENDIX A: APPENDIX B APPENDIX C APPENDIX D APPENDIX E APPENDIX F APPENDIX G APPENDIX H APPENDIX I APPENDIX J APPENDIX K TABLE OF CONTENTS SUBDIVISION NAMF MAp |NFoRMAIoN..:. ....: . .:. .:. :: .: . . .. '." PROPERTY BOUNDARY NAMES vtctNtTY MAP........... ADJOINING PROPERry OWNERS STREET, BLOCK AND LOT LAYOUT PROPOSED EASEMENTS ................ LOT SETBACKS............ LAND USE BREAKDOWN TOPOGRAPHIC CONTOURS ........... OPEN SPACE PUBLTC DEDTCATTONS .............. ROADWAY DESIGN EXISTING EASEMENTS................. TERMS OF RESERVATIONS OR DEDICATIONS......... PHASING... EVTDENCE OF ACCESS................. NON-SI NGLE FAMILY OFF.STREET PARKI NG HAZARDOUS AREAS RADIATION HAZARD T|TLE COMMtTMENT.............. SECTION SURVEY.... GEOLOGY. SOILS vEGETAT|ON................. WILDLIFE DRAINAGE WATER SUPPLY PLAN ......... SANITARY SEWAGE DISPOSAL PLAN ......... TRIP GENERATION CALCULATIONS .......... TTTLE COMMtTMENT.............. USDA SCS SOIL SURVEY MAPS AND INFORMATION WILDLIFE MITIGATION P1AN....,. DRAINAGE STUDY REPORT.... INTRODUCTION AND LOCATION HYDROLOGIC AREA AND FLOW CALCULATIONS...... HYDROLOGIC CRITERIA AND METHODOLOGY.......... POST-DEVELOPMENT DRAI NAGE I MPACTS... DEBRIS FLOW HATARD ANALYSIS AND MITIGATION coNcLUStONS .......... WATER SUPPLY PLAN ......... PERCOLATION TEST REPORT.... ISDS OPERATION AND MAI NTENANCE GUI DE........... TRIP GENERATION CALCULATIONS.......... SUBDIVISION APPLICATION FORM RELATIONSHIP TO COMPREHENSIVE PLAN .............. STREAM BANK STABILIZATION PERMIT ,....4 ,.,.,4 ,,...4 '.,.,4 '..,,4 ...,4 ,,,.4 E .... 5 .... 5 .... 5 ....6 .... 6 ....6 .... 6 .... 6 .... 6 ....6 .... 6 ....6 .,..7 ...,7 ,...7 .... 8 .... 8 .... 8 .... B .... 8 ,... 9 ,... 9 ... I ... 9 .10 .15 .51 .54 .56 .56 .56 .57 .57 .58 .59 .63 .69 .73 .75 .77 .80 G:\98687\PRE LIM I NARY Pt-AN. doc INTRODUCTION: Clinetop Ranch Subdivision received S.feJgn Plan approval from the Garfield County planning and Zoning Commission on January 14,1ggg. Clinetop Ranch Subdivision is located orr Garfield County Road No. 243 andis approximately 5miles north of the Highway 6 &24 and County Road No.243 intersection in New Casfle. Theparcel of land contains approximately 24.75 jcres. During Sketch pfan tne applicant proposedto subdivide the property into 3 lots. Since approval of th6 sketch pran tne afipticant hasrevised the proposal.and currently intends to subdivide the property into only 2lots with aminimum lot size of 10 acres. SECTION 4:50 A: SUBD|V|SION NAME The name of this subdivision is "clinetop Ranch Subdivision,, SECTION 4:50 B: MAp TNFORMATTON The date of preparation of the Preliminary Plat, a graphic scale, the basis of bearing, the symboldesignating north, and certification by a registereO tanO surveyor are all provided on thePreliminary Plat included with this submittil. SECTION 4:50 C: pROpERTy BOUNDARy The boundary line la.bels, survey ties and a legal description of the proposed subdivision areprovided on the Preliminary plat included withlhis submittal. SECTION 4:50 D: NAMES The Names addresses and phone numbers of the owners/applicants, planners, and engineersare on the covers of this document and the preliminary plat. SECTION 4:50 E: VtCtNtry MAp A vicinity map showing the area within a one half-mile radius of the proposed subdivision isprovided on the Preliminary plat. SECTION 4:50 F: ADJOIN|NG pROpERTy OWNERS The names of all adjoining property owners of record as found in the Garfield county Assessor,sOffice are indicated on the Preliminary Plat. The names and addresses are also included belowfor convenience. CLINETOP RANCH SUBDIVISION March 25, 1998 Page 4 of 81 1. Dennis & Margot Eicher P.O. Box 830 New Castle, CO 81647-0830 2. Julie Anne lnwood G : \98687\PRELI Ml NARY Pl-AN.doc T I t I t I CLINETOP RANCH SUBDIVISION March 25, 1998 Page 5 of 8't P.O. Box 52 New Castle, CO 81647-052 3. Charles Bishop 141 Cottonwood Lane Carbondale, CO 81623-9502 4. Lillian Reed 4110 - 243 Road New Castle, CO 81047-9747 SECTION 4:50 G:STREET, BLOCK AND LOT LAYOUT SECTION 4:50 H: PROPOSED EASEMENTS The applicant proposes to define two separate existing irrigation easements, and create oneaccess, utility, drainage, and irrigation easement within thii subdivision. All proposed anddefined easements for the subdivision are shown on the preliminary plat. Two existing ditches currently cross the Clinetop Ranch Subdivision. One of the ditchestraverses through the northwest portion of the property and one ditch crosses the easterlyportion of the property. These ditches have existing recorded easements, which are somewhatvague. Through this subdivision plat, we propose to better define the two irrigation easementswith 2O-foot wide easements, defined as 1O-feet on each side of the ditch ceitertines. ln bothcases, we believe these 20-foot wide easements centered on the ditch will more than adequately allow for the operation and maintenance of the ditches. We also propose to create a 40-foot wide access, drainage, irrigation, and utility easement.This easement is completely within Parcel 1 and extends from CarfieiO County Road No. 243 tothe boundary of Parcel 2. SECTION 4:50 l: LOT SETBACKS Proposed building envelopes are shown on the Preliminary Plat for parcels 1 and 2. Allproposed building envelopes adhere to the lot setbacks allowed within existing zoning removingany land over proposed easements. The two building envelopes are also locited outside the1O0-year flood plain for Main Elk Creek. SECTION 4:50 J: LAND USE BREAKDOWN The proposed land use will be for single family homes, in compliance with the existing andfujyle ARRD zoning (agricultural rural residential density). The complete land use breakdownwill be more specifically addressed by others. G:\98687\PRELIMI tIARY Pl.AN.doc I lllL",.^,1,his subdivision will be accessed by private driveways as shown on the preliminaryI ;131.::lTlrTtstli,Hfi:Tfijf pubric streets within the deveropment. rhe area or each rot is I T I I I I I I I I T t CLINETOP RANCH SUBDIVISION March 25, 1998 Page 6 of 81 SECTION 4:50 K: TOPOGRAPH|C CONTOURS The existing topography is depicted on the Preliminary Plat with a Z-footcontour interval. Thetopography was created from a topographic field survey performed Uy.feiome Gamba &Associate's, lnc. and is based on an arbitrary localdatjm. SECTION 4:50 L: OpEN SpACE Due to the extremely low density of this subdivision, this development does not propose toprovide any common open space. SECTION 4:50 M: PUBLIC DEDTCATTONS Due to the extremely low density and somewhat remote location of this subdivision, thisdevelopment does not propose to make any dedications to the public. SECTION 4:50 N: ROADWAy DESTGN Both Parcels in this subdivision will be accessed by private driveways from Garfield CountyRoad 243. Horizontal and vertical roadway alignment data are proviOeO in the preliminary plat submittal. SECTION 4:50 O: EXISTTNG EASEMENTS Existing easements of record are provided on the Preliminary Plat and include easements forMain Elk Creek, Garfield County Road No. 243, and the two ditches described in section 4:50 Habove. SECTION 4:60 A: TERMS oF RESERVATIONS oR DEDIcATIoNS The certificate of dedication and ownership is included on the preliminary plat. SECTION 4:60 B: pHAS;NG The proposed construction of improvements and platting of lots for this subdivision will not bephased. SECTION 4:60 C: EVTDENCE OF ACCESS Parcel 1 of this subdivision is adjacent to and fronts on Garfield County Road 243. parcel 2 ofthis subdivision is provided access to County Road 243 through the aicess easement createdas part of this subdivision. SECTION 4:60 D: NON-SINGLE FAMILY OFF-STREET PARKING There will be no off-street parking on this development except the parking that will serve singlefamily residences. G:\98687\PRELI MI tIARY PLAN.doc CLINETOP RANCH SUBDIVISION March 25, 1998 Page 7 of81 SECTION 4:60 E: HAzARDoUS AREAS This parcel of land is bisected by Main Elk Creek. The portion of the land immediately adjacent to the creek is subject to floods associated with Main Elk Creek. The approximate boundary of the 1O0-year flood plain of Main Elk Creek has been identified on the preliminary plat. Flood events larger than the 1O0-year flood may occur and would inundate a larger portion of this property. However, the flood event typically considered to be the minimum acceptable risk by local and national standards is the 10O-year flood. Therefore, the building envelopes as depicted on the preliminary plat have been defined to remain outside of the 1Oo-year flood plain of Main Elk Creek. Based on the proposed building envelopes, the potential hazard to houses developed on this site due to flooding from Main Elk Creek is less than 1 o/o on ?A! given year. The portion of this property that lies east of Main Elk Creek is not proposed for development as depicted by the proposed building envelopes provided on the preliminary plat. Therefore, a hazard analysis of this portion of the property has not been performed. The remaining property which lies to the west of the 10O-year flood plain of Main Elk Creek is situated on an alluvial fan created from a dry gulch to the west of the property. This dry gulch has a tributary area of approximately 357 acres. Based on a drainage study included with this report, the maximum flows from this dry-gulch due to the 25-year and 10O-year rainfall events are approximately 382 cfs and 522 cfs respectively. The alluvial fan has been created through the accumulation of debris flow and/or mudflow material, which has been carried with the flows, produced by these large storm events. The potential remains for future debris flow/ mudflow events that could have a significant impact on this property. lncluded with this submittal is a complete drainage report of this off-site basin. This report details the hydrologic calculations used to determine the potentialflood flows from this off-site basin. Based on the potential hazards associated with this basin, we have included in the drainage report recommendations for the mitigation of the potential debris floM mudflow hazards to this property. These recommendations consist primarily of the construction of a debris floMmudflow/drainage diversion berm along the northern and western boundaries of the subdivision. More complete information in regard to the mitigation of this hazard is provided in the drainage report. SECTION 4:60 F:RADIATION HAZARD We have contacted Jim Hams with the Colorado Department of Health (CDOH) in Grand Junction. Mr. Hams may have some radiation hazard data on homes near this site. At this time we have.been unabb to speakdirectly to Mr. Hams. Once we receive any information, we will forward it to you for your consideration. SECTION 4:60 G:TITLE COMMITMENT A title commitment for the property to be developed is attached with this submittal as Appendix A. The Policy of title lnsurance was issued by: Colorado West Land Title Guarantee Corp. 817 Colorado Avenue, Suite 106 G:\98687\PRELIMINARY Pl-AN.doc CLINETOP RANCH SUBDIVISION March 25, 1998 Page 8 of 81 Glenwood Springs, CO 81601 (303) e45-0408 Policy Number: 06 3057 04 000111 SECTION 4:60 H: SECTION SURVEY A subdivision of a section was not required or completed for this subdivision. SECTION 4:70 A: GEOLOGy The project site is located on the valley floor of Main Elk Creek which is a typical "U" shaped glacial valley which has been subsequently modified by stream erosion. The bedrock that underlies the stream valley alluvium is Pennsylvanian Age, Eagle Valley Formation that is comprised of a series of interbedded siltstone, shale and gypsum. The formation dips steeply to the southwest, being a part of the sedimentary series uplifted and exposed on the southern edge of the Flat Tops Uplift. The Quaternary stream valley alluvium is comprised of stream deposited sand, gravel and boulders originating from upstream sedimentary, igneous and metamorphic outcrops which were transported to the present location through glacial and post-glacial stream activity. The present ground surface is comprised of a varying thickness of soils and colluvium originating from the mechanical and chemical weathering of the Pennsylvanian formations exposed on the adjacent valley walls. These materials overlay the stream valley alluvium. SECTION 4:70 B: SOTLS A copy of the Native Cooperative Soil Survey Map prepared by the USDA Soit Conservation Service is included in this report as Appendix B. SECTION 4:70 C: VEGETATION The area of the proposed Clinetop Ranch Subdivision to be developed is almost exclusively pasture grasses. The applicant proposes to maintain a significant majority of the developable area in its current condition following development. The vegetation along the banks of Main Elk Creek are riparian consisting primarily of cottonwood, with some willows and water tolerant grasses, sedges, and rushes. The applicant does not propose to develop within the 1OO-year flood plain of Elk Creek and therefore, will not disturb the existing vegetation. SECTION 4:70 D:WILDLIFE The Division of Wildlife was contacted by Ron Liston regarding concerns for wildlife on this property. A wildlife mitigation plan is attached as Appendix C. G:\98687\PRELIMINARY PIAN.doc CLINETOP RANCH SUBDIVISION March 25, 1998 Page 9 of 81 SECTION 4:80:DRAINAGE A complete drainage study has been prepared by Jerome Gamba & Associates, lnc. and is included with this submittal as Appendix D. SECTION 4:91:WATER SUPPLY PLAN A water supply plan was prepared by others and is included with this submittal as Appendix E. sEcrloN 4:92: SAN|TARY SEWAGE DtsposAL PLAN Both parcels will utilize individual sewage disposal systems (ISDS), the design for which will be addressed at the time of building permit application. Hepworth-Pawlak Geotechnical, lnc. performed percolation testing and a copy of their report is included in this submittal as Appendix F. According to the percolation tests and subsurface investigation performed by Hepworth- Pawlak, the tested areas should be suitable for conventional infiltration septic disposal systems. Also included in this report is a copy of the Jerome Gamba & Associates, lnc. Operation and Maintenance manualfor (ISDS) as Appendix G. sEcrloN 4:94: TRIP GENER.ATION cALcuLATroNS The trip generation calculations for this development are included in Appendix H. G:\98687\PRELIMINARY PI-AN.doc CLINETOP RANCH SUBDIVISION March 25, 1998 Page 15 of81 APPENDIX B USDA SO!L CONSERVATION SERVICE SOIL SURVEY MAPS AND INFORMATION G:\98687\PRELIMINARY P|SN.doc t5 ? :9'3- Jl" I litiil00tI ro8. I 0'00' (Joinr sheat 2) R.94w. R.93 W SITE LOCATION .4.- 1 lA?b-,!tP *^"!.-- r .'y67 r t Jsi\ -. ^,--.1 67 t.1 4l '^e RIFLE ABEA, COLORAOO underlain by and formed in material weathered from Green River shale and Uinta sandstone. Annual precipi- tation is about 20 inches, and average annual tempera- ture is about 40 degrees F. This map unit covers about 16 percent of the survey atea, ot approximately 100,000 acres. The unit is about 30 percent Parachute soils, 30 percent Rhone soils, 20 percent lrigul soils, 15 percent Northwater soils, and 5 percent soils of minor extent. Parachute soils are on ridges and mountainsides. They are moderately deep and well drained. The surface layer is loam, and the subsoil is loam that grades to extremely channery loam. Bedrock is sandstone. Rhone soils are on mountainsides. They are deep and well drained. The surface layer is loam in the upper part and sandy clay loam in the lower part. The substratum is very channery sandy clay loam. lrigul soils are on crests and sides of ridges. They are shallow and well drained. The surface layer is channery loam, and the substratum is extremely channery sandy clay loam. Bedrock is sandstone. This unit is used entirely for grazing and wildlife habi- tat. lt is poorly suited to other uses. lt is grazed mainly from early summer to early fall. This unit is well suited to wildlife habitat. Deer, elk, mountain lion, grouse, rabbits, and squirrels are common. 2. Rockoutcrop-Torriorthents Rock outcrop and moderately deep and shallow, well drained, very steep and ertremely steep soils on escarp- ments and mountains This map unit is in the northwestern part of the survey area below the Roan Plateau from the escarpment edges down to the toe slope. Average annual precipita- tion is about 14 inches, and average annual temperature is about 46 degrees F. This map unit covers about 5 percent of the survey area, or approximately 30,000 acres. This unit is about 45 percent Rock outcrop, 40 percent Torriorthents, and 15 percent soils of minor extent. Rock outcrop is on the nearly vertical clitfs from the rim of the Roan Plateau to the talus slopes below. lt consists of exposures of shale of the Green River For- mation. This shale is locally known as "oil shale." Torriorthents are on the colluvial slopes below the Rock outcrop. They are moderately deep and shallow and are well drained. They are clayey to loamy and contain variable amounts of gravel, cobbles, and stones. This unit is used primarily for grazing and wildlife habi- tat, malnly on the toe slopes where browse plants and some grasses grow. The deer and elk feed at the lower elevations in winter. Sage grouse, mountain lion, rabbits, and coyotes also find habitat on this unit. There has been limited mining of "oil shale" from the Rock outcrop. Commercial development is extremely limited. 5 3. Arvada-Torrifluvents-Heldt Deep, well drained to somewhat pooily drained, nearly level to gently sloping soils on benches, terraces, alluvial fans, and flood plains This map unit is in the central part of the survey area. The soils formed in mixed alluvium. Average annual pre- cipitation is about 13 inches, and average annual tem- perature is about 48 degrees F. This map unit covers about 6 percent of the survey area, or approximately 41,000 acres. This unit is about 40 percent Arvada soils, 20 percent Torrifluvents, 20 percent Heldt soils, and 20 percent soils of minor extent. Arvada soils are on benches, terraces, and fans. They are deep, well drained, and alkali atfected. The surface layer is loam, the subsoil is strongly alkaline silty clay loam, and the substratum is silty clay loam. Torrifluvents are on flood plains and low tenaces. They are deep and well drained to somewhat poorly drained. They are sandy loam or loam stratified with sand, gravel, or cobbles. Heldt soils are on alluvial fans. They are deep and well drained. The surface layer and subsoil are clay loam, and the substratum is clay. Minor in this unit are Nihill, Kim, and Olney soils. These soils are deep and well drained. This unit is used for irrigated crops, grazing, and wild- life habitat. Most of the irrigated crops are on the Heldt soils. The major crops are alfalfa, small grains, and irri- gated pasture. The suitability of the Arvada soils for irrigated crops is poor because of the strongly saline- alkali condition and slow permeability. The suitability of Torrifluvents for irrigation and most other uses is poor because of flooding and a high water table. This unit has poor suitability for community development because of flooding, high shrink-swell potential, and salinity and alkalinity. lt has fair suitability for upland wildlife habitat. Torrifluvents have fair suitability for wetland wildlife habi- tat. 4. Torriorthents-Rock outcrop-Camborthids Dominantly shallow to deep, well drained, steep to ex- tremely steep soils, and Rock outcrop, on mountains, fans, and ridges This map unit is throughout the survey area. The soils formed in sandstone and shale. Average annual precipi- tation is about 14 inches, and average annual tempera- ture is about 47 degrees F. This map unit covers about 20 percent of the survey area, or approximately 130,000 acres. This unit is about 50 percent Torriorthents, 20 percent Rock outcrop, 20 percent Camborthids, and 10 percent soils of minor extent. Torriorthents are on steep and very steep mountain- sides and steep fans. They are shallow and moderately I I I I I I I I I I I I I I I I I I I SOIL SURVEY6 deep and are well drained. They are clayey to loamy and coniain variable amounts of gravel, cobbles, and stones' Flock outcrop is on steeP and very steep mountain- sides and escarpments. lt is mostly sandstone and shale. Camborthids are on steep fans and mountainsides' They are shallow to deep and are generally clayey to loamy throughout. Minor in this unit are Lazear, Dollard, and Ansari soils. These soils are on steep mountainsides. This unit is used almost entirely for wildlife habitat and limited grazing. lt is well suited to wildlile habitat and is important win[er feeding areas for deer and elk. Grouse, mountain lion, rabbits, and coyotes also use these areas' This unit is poorly suited to community development be- cause of depth to rock, steep slopes, and Rock outcrop' 5. Potts-lldefonso-Vale Deep, well drained, gently sloping to steep soils on mesas, alluvial fans, tetaces, and benches This map unit is in the central and south-central parts of the survey area. The soils formed in loess caps over gravelly mat-erial on mesas and in a mixture of basalt ind sandstone outwash. Average annual precipitation is about 14 inches, and average annual temperature is about 47 degrees F. This map unit covers about 16 percent of the survey area, or approximately 100,000 acres. This unit is about 40 percent'Potts soils, 20 percent lldefonso soils, 15 percent Vale soils, 10 percent Olney soils, and 15 per- cent soils of minor extent. Potts and Vale soils are on mesas and gently sloping fans. They are deep and well drained. The surface layer is loam oi silt loam, the subsoil is clay loam or silty clay loam, and the substratum is loam and silt loam. lldefonso soils are on moderately sloping to steep fans. They are deep and well drained. The surface layer is stony lbam, and the substratum is very stony loam. Olney soils are on gently sloping fans. Minoi in this unit are Heldt and Pena soils, Torriorth- ents, Camborthids, and Rock outcrop. About 60 percent of this unit is used for dryfarmed and irrigated crops. Most irrigated crops are hay and pasture. A very small acreage is dryfarmed. The rest of the unit is used for grazing and nonirrigated pasture. Wildlife such as deer, elk, rabbits, grouse, and doves find food and cover on this unit. Deer and elk use this unit as a prime winter feeding area. A few pheasant and chukar live near areas where cereal crops are grown. 6. Morval-Villa Grove Deep, well drained, moderately sloping to moderately steep soits on mesas, mountainsides, and alluvial fans This map unit is in the south'central and extreme east- ern parts of the survey area. The soils formed in alluvium and outwash derived from mixed basalt and sandstone from mountainous areas. Average annual precipitation is about 16 inches, and average annual temperature is about 44 degrees F. This map unit covers about I percent of the survey area, or approximately 50,000 acres. The unit is about 15 percent Morval soils, 15 percent Villa Grove soils, 10 percent Tridell soils, 10 percent Zollay soils, and 50 percent soils of minor extent. Morval soils are on moderately sloping mesas and sides of valleys. They are deep and well drained. The surface layer is loam, the subsoil is clay loam, and the substratum is stonY loam. Villa Grove soils are on mountainsides and fans. They are deep and well drained. The surface layer is loam, the subsoil is clay loam, and the substratum is loam. Tridell soiis are on strongly sloping to moderately steep mesa sides and fans. They are deep and well drained. The surface layer is stony loam, and the sub- stratum is very stony loam. Zollay soils are on moderate- ly steep mountainsides and fans. They are deep and well Orained. The surface layer is loam, and the subsoil and substratum are cobblY claY. Minor in this unit are Ansari, Dollard, Detra, and Jerry soils and Torriorthents, Camborthids, and Rock outcrop' Nearly all of this unit is used for grazing and. wildlife habitat. lt produces good stands of grasses, forbs, and browse shiubs. This unit is used extensively by wildlife and is a wintering area for deer and elk. Upland wildlife such as grouse lnd dove also fine cover and food on this unit. -Nearly all of the soils in this unit are poorly suited to community development. Steep slopes' stones' and high shrink-swell potential are the main limitations' 7. Lazear-Cushman'Ascalon Shallow to deep, well drained, moderately sloping lo v:ty steep soils on'mountains, mesa breaks, and alluvial fans This map unit is in the central and north-central parts of the survey area. The soils formed in material weath- ered from sandstone, limestone, and shale and in mixed alluvium. Average annual precipitation ranges from 12 to 15 inches, and average annual temperature is about 48 degrees F. ihis map unit covers about 6 percent of the survey area, or approximately 35,000 acres. The unit is about 30 perceni Lazear soils, 30 percent Cushman soils, 15 percent Ascalon soils, and 25 percent soils of minor extent. lazear soils are on moderately sloping to very steep mountainsides and mesa breaks. They are shallow and well drained. The surface layer is gravelly loam, and the substratum is cobbly loam. Bedrock is sandstone' Cushman soils are on moderately sloping to steep mesa breaks and side slopes. They are moderately deep and well drained. The surface layer is stony loam, the RIFLE AREA, COLORADO subsoil is sandy clay loam, and the substratum is loam and very gravelly loam. Bedrock is shale and sandstone. Ascalon soils are on moderately sloping to strongly sloping alluvial fans and mesas. They are deep and well drained. The surface layer is fine sandy loam, and the subsoil and substratum are sandy clay loam. Minor in this unit are Tanna soils, Torriorthents, Cam- borthids, Badland, and Rock outcrop. Tanna soils are on the strongly sloping to very steep mountainsides. Bad- land is on the very steep mountainsides and hills. Tor- riorthents, Camborthids, and Rock outcrop are on the steep to very steep hills and mesa breaks. This unit is used for grazing and wildlife habitat. lt provides cover and food for deer, elk, rabbits, grouse, doves, and chukars. The understory vegetation is sparse in most areas and is dominated by pinyon and juniper. Livestock grazing must be carefully managed to prevent deterioration of the desirable understory vegetation. Deer and elk feed in these areas of sparse vegetation in winter. Community development is limited to a small part of this map unit. Steep slopes and stoniness are the main limitations. 8. Bucklon-lnchau-Gochetopa Shallow to deep, well drained, moderately sloping to steep soils on mountains and alluvial fans This map unit is mainly in the southwestern part of the survey area. The soils formed in alluvium derived from sandstone, shale, and basalt. Average annual precipita- tion is 18 inches, and average annual temperature is about 40 degrees F. This map unit covers about 5 percent of the survey area, or approximately 30,000 acres. This unit is about 40 percent Bucklon soils, 25 percent lnchau soils, 20 percent Cochetopa soils, and 15 percent soils of minor extent. Bucklon soils are on ridges and mountainsides. They are shallow and well drained. The surface layer is loam, and the substratum is clay loam and loam. Bedrock is sandstone. lnchau soils are on mountainsides and ridges. They are moderately deep and well drained. The surface layer is loam, and the subsoil is clay loam. Bedrock is sand- stone or shale. Cochetopa soils are on mountainsides and alluvial fans. They are deep and well drained. The surface layer is loam, the subsoil is stony clay loam or stony clay, and the substratum is stony clay. Minor in this unit are Jerry, Morval, and Tanna soils. Jerry and Morval soils are on mountainsides and mesas. They are deep, well drained, and loamy. Tanna soils are on mountainsides. They are moderately deep and well drained. Almost all of this unit is used for grazing and wildlife habitat. Bucklon soils have fair potential for grazing and wildlife habitat. lnchau and Cochetopa soils have good potential for grazing. All of the soils in this unit are poorly suited to community development. Steep slopes, depth to bedrock, and high shrink-swell potential are the main limitations. 9. Jerry-Lamphier-Cochetopa Deep, well drained, moderately sloping to steep soils on mountains and fans This map unit is in the north-central and northeastern parts of the survey area. The soils formed in mixed alluvial and colluvial material derived from sandstone, shale, and basalt. Average annual precipitation is about 18 inches, and average annual temperature is about 40 degrees F. This map unit covers about 18 percent of the survey area, or approximately 114,000 acres. This unit is about 30 percent Jerry soils, 20 percent Lamphier soils, 15 percent Cochetopa soils, 20 percent Dateman, Farlow, and Etoe soils, and 15 percent soils of minor extent. Jerry soils are on fans and mountainsides. They are deep and well drained. The surface layer is loam, the subsoil is cobbly clay loam, and the substratum is cobbly clay. Lamphier soils are on fans and mountainsides. They are deep and well drained. The surface layer and sub- stratum are loam. Cochetopa soils are on fans and mountainsides. They are deep and well drained. The surface layer is loam, the subsoil is stony clay loam and stony loam, and the sub- stratum is stony clay. Dateman, Farlow, and Etoe soils are on mountain- sides. Dateman soils are moderately deep and well drained. Farlow and Etoe soils are deep and well drained. Minor in this unit are Detra and Bucklon soils. Detra soils are on mountainsides. They are deep and well drained. Bucklon soils are on ridges and mountainsides. They are shallow and well drained. This unit is used almost entirely for grazing and wildlife habitat. A few small areas of gentle sloping soils are irrigated. The main crop is native hay. This unit has good potential for grazing and wildlife habitat. The main con- cerns in management are proper control of grazing, fenc- ing, range reseeding, and brush control. The unit is poorly suited to community development. Steep slopes and high shrink-swell potential are the maior limitations. The unit has good potential for wildlife habitat. Deer, elk, mountain lion, grouse, rabbits, and squirrels are common. Broad land use considerations The Rifle Area covers approximately 630,000 acres in Garfield and Mesa Counties, Colorado. Nearly all of this land is privately owned. lt is used mainly for range, wildlife habitat, irrigated pasture, and irrigated crops. 7 12 brown sandy clay loam about 30 inches thick. The sub- stratum is very pale brown sandy clay loam to a depth of 60 inches. lncluded with this soil in mapping are small areas of Olney and Potts soils that have slopes of 1 to 6 percent. Permeability is moderate, and available water capacity is moderate. Effective rooting depth is 60 inches. Sur- face runoff is medium, and the erosion hazard is moder- ate. This soil is used mainly for irrigated hay and pasture and some crops. Some areas are used for grazing and wildlife habitat. Conugations are the main method of applying inigation water. Sprinklers are also suitable. Steep slopes cause erosion to be more rapid on this soil than on less sloping Ascalon soils. Minimum tillage, cover crops, contour til- lage, and grassed waterways help to control erosion. Drop structures are needed in irrigation ditches. The native vegetation on this soil is mainly need- leandthread, wheatgrasses, and sagebrush. When range condition deteriorates, forbs and shrubs increase. When the range is in poor condition, undesira- ble weeds and annual plants are numerous. Properly managing grazing maintains and improves range condi- tion. Reducing brush also improves the range. Seeding improves range in poor condition. Pubescent wheat- grass, western wheatgrass, and big bluegrass are suit- able for seeding. Preparing a seedbed and drilling the seed are good practices. This soil has potential as habitat for cottontail rabbit, squirrel, pheasant, mourning dove, and wild turkey. Steep slopes and lrost action limit community develop- ment. Cuts and fills should be minimal, and drainage is needed for roads and structures. This soil is in capability subclasses lVe, irrigated, and Vle, nonirrigated. 7-Ascalon-Pena complex, 6 to 25 percent slopes. These moderately sloping to hilly soils are on sides of valleys and alluvial fans. Elevation ranges from 5,000 to 6,500 feet. The soils formed in alluvium derived from sandstone and shale. The average annual precipitation is about 14 inches, the average annual air temperature is about 48 degrees F, and the average frost-free period is about 120 days. The Ascalon soil makes up about 65 percent of the complex, and the Pena soil makes up about 25 percent. The Ascalon soil is on the less sloping, somewhat con- cave parts of the landscape, and the Pena soil is on the steeper, convex parts. The Ascalon soil is deep and well drained. Typically, the surface layer is brown fine sandy loam about 5 inches thick. The subsoil is brown and yellowish brown sandy clay loam about 30 inches thick. The substratum is very pale brown sandy clay loam to a depth of 60 inches. SOIL SURVEY Permeability of the Ascalon soil is moderate, and avail- able water capacity is moderate. Effective rooting depth is 60 inches. Surface runoff is medium, and the erosion hazard is moderate. The Pena soil is deep and well drained. Typically, the surface layer is about 12 inches thick. The upper part ol the surface layer is dark grayish brown stony loam, and the lower part is dark grayish brown very stony loam. The substratum is very pale brown very stony sandy loam to a depth ol 60 inches. Permeability of the Pena soil is moderate, and availa- ble water capacity is low. Etfective rooting depth is 60 inches. Runoff is slow, and the erosion hazard is moder- ate. lncluded with these soils in mapping are small areas of Olney and Potts soils that have slopes of 6 to 12 per- cent. These areas are on small, isolated mesas and make up 5 to 10 percent of the complex. This complex is used mainly for wildlife habitat and limited grazing. The native vegetation is mainly needleandthread, wheatgrasses, mountainmahogany, and sagebrush. When range condition deteriorates, forbs and shrubs increase. Properly managing grazing maintains and im- proves range condition. When the range is in poor condi- tion, seeding is practical. Areas must be carefully select- ed to avoid the concentration of stones. Pubescent wheatgrass, western wheatgrass, and big bluegrass are suitable for seeding. Preparing a seedbed and drilling the seed are good practices. Controlling brush improves areas that are producing more woody shrubs than are normally found in the potential plant community, but con- trolling brush may damage deer habitat. Cottontail rabbit, squirrel, pheasant, mourning dove, wild turkey, and some mule deer find habitat on these soils. Community development is limited by the steep slopes and frost action in the Ascalon soil and by steep slopes and stones in the Pena soil. This complex is in capability subclass Vle, nonirrigated. 8-Atencio-Azeltine complex, 1 to 3 percent slopes. These nearly level to gently sloping soils are on alluvial fans and terraces. Elevation ranges lrom 5,000 to 7,000 feet. The soils formed in mixed alluvium derived from red-bed shale and sandstone. The average annual precipitation is about 14 inches, the average annual air temperature is about 47 degrees F, and the average annual frost-free period is about 110 days. The Atencio soil makes up about 45 percent of the map unit, and the Azeltine soil makes up about 45 per- cent. Exposed areas of gravel make up about 10 percent of the unit. The Atencio soil is deep and well drained. Typically, the surface layer is dark reddish gray sandy loam about 11 inches thick. The upper part of the subsoil is reddish brown gravelly sandy clay loam about 12 inches thick, 136 I SOIL SURVEY more. Organic matter content is high. Surface runoff is slow, and the erosion hazard is slight. This soil is occa- sionally flooded for brief periods between April and Sep' tember. This soil is used mainly for grazing, wildlife habitat, and limited irrigated hay. Good management of water and fertilizer maintains or improves the production of native hay. The native vegetation on this soil is mainly wildrye, wheatgrass, needlegrass, and small amounts of forbs and shrubs. When range condition deteriorates, dandelion, yarrow, rabbitbrush, big sagebrush, and Kentucky bluegrass in' crease. Properly managing grazing maintains and im- proves range condition. Basin wildrye, slender wheat' grass, and western wheatgrass are suitable for seeding. Preparing a seedbed and drilling the seed are good prattices-. Fencing protects this more productive soil. This soil is lower than surrounding soils and usually con' tains the water supply for livestock. Beducing brush im- proves the range.' Mule deer, snowshoe hare, elk, coyote, and blue grouse find habitat on this soil. Community development is timited by flooding. This soil is a good source of toPsoil. This sbil is in capability subclass Vle, nonirrigated. 64-Tanna silty clay loam, 25 to 45 percent slopes. This moderately deep, well drained soil is on mountain- sides. Elevation ranges from 6,500 to 7,600 feet. This soil formed in material weathered from shale. The aver- age annual precipitation is about 17 inches, the average annual air temperature is about 43 degrees F, and the average frost-free period is about 100 days. Typically, the surface layer is grayish brown silty clay loam about 9 inches thick. The subsoil is light brownish gray clay and light gray silty clay about 15 inches thick. The substratum is light gray channery clay loam about 6 inches thick. Weathered shale is at a depth of 30 inches. lncluded with this soil in mapping are small areas of Dollard clay and shale outcrop on steep and very steep mountainsides. These areas make up 10 to 15 percent of the map unit. Permeability is slow, and available water capacity is low. Effective rooting depth is 20 to 40 inches. Surface runoff is rapid, and the erosion hazard is severe. This soil is used mainly tor wildlife habitat and limited grazing.- The- native vegetation on this soil is mainly Gambel oak, serviceberry, snowberry, and elk sedge. When range condition deteriorates, forbs and shrubs increase. When the range is in poor condition, Kentucky bluegrass, weeds, and annual plants are numerous. Propbrty managing grazing maintains and improves range condition. Mule deer, wild turkey, and cottontail rabbit find habitat on this soil. Use of this soil for community development, for sani' tary facilities, and as a source of construction material is limited by steep slopes, high clay content, low strength, depth to bedrock and shrink-swell potential. Road con' struction and building foundations can be designed to reduce the effects of shrinking and swelling. A good drainage system reduces soil slumping. This- soil is in capability subclass Vlle, nonirrigated. 65-Torriftuvents, nearly level. This broadly defined unit consists of deep, well drained to somewhat poorly drained, nearly level soils on flood plains adjacent to the Colorado and Roaring Fork Rivers and their major tribu' taries. Slope is O to 6 percent. The soils formed in alluvium. These soils are stratified and vary widely in texture and depth. The surface layer ranges from loamy sand and fine sandy loam to silty loam and clay loam. The underlying layers are generally sandy loam or loam strati' fied with iand, gravel, and cobbles. ln some areas gravel and cobbles are on or near the surface. The water table fluctuates between depths ol 2 and 4 feet and in some years is near the surface during spring runoff from snowmelt. These soils are sublect to brief, occasional flooding late in spring and early in summer. lncluded in mapping are small isolated areas of Wann soils that have slopes of 1 to 3 percent. Small areas of soils that are moderately to severely affected by alkali are identified by an alkali spot symbol- Small, isolated areas where water stands at or near the surface all year are identitied by wet spot and marsh spot symbols- These areas make up 15 percent of the map unit. These soils are used for wildlife habitat, recreation, and some grazing. The native vegetation is mainly cottonwood, willow, tamarisk and water-tolerant grasses, sedges, and rushes. ln many areas these soils are suited to production of Fremont iottonwood. The soils are capable of producing 230 board feet of timber per acre from a fully stocked, even-aged stand of 40-year-old trees. Wheie these soils are accessible, they provide shelter and forage for livestock. Mule deer, cottontail rabbit, coyote, bobcat, ducks, geese, and other native birds find food and shelter on these soils. Where feasible, planting food plots, trees and shrubs, and nesting cover enhances the habitat for upland wildlife. Where the water table is high, open water for waterfowl and fish can be developed by blast' ing or by excavating. These soils have potential for recreation. Wildlile is abundant, and the nearby rivers can be used for rafting and canoeing. Community development is very limited by flooding, the seasonal high water table, and variable texture. Onsite investigation is necessary. These soils are in capability subclass Vllw, nonirrigat' ed. RIFLE AREA, COLORADO 66-Torrlorthents-Camborthids-Rock outcrop com- plex, steep. This broadly defined unit consists of ex- posed sandstone and shale bedrock, loose stones, and soils that are shallow to deep over sandstone and shale bedrock and stony basaltic alluvium. This complex occurs throughout the survey area. The soils and out- crops are moderately steep to very steep. Slope ranges from 15 to 70 percent. Torriorthents make up about 45 percent of the com- plex, Camborthids make up 20 percent, and Rock out- crop makes up 15 percent. The Toniorthents are on foothills and mountainsides below Flock outcrop. The moderately steep Camborthids are on lower toe slopes and concave open areas on foothills and mountainsides. Torriorthents are shallow to moderately deep. They are generally clayey to loamy and contain variable amounts of gravel, cobbles, and stones. The surface is normally covered with stones weathered from the higher- lying Rock outcrop. South of the Colorado River, basaltic stones and cobbles are on the surface. Camborthids are shallow to deep. They are generally clayey to loamy and have slightly more clay in the sub- soil than in the surface layer. The surface layer is light colored. The profile is normally free of stones, but scat- tered basalt stones, cobbles, and sandstone fragments are on the surface. The Rock outcrop is mainly Mesa Verde sandstone and Wasatch shale. Some areas are covered with basal- tic boulders and stones. Small areas of limestone out- crops and exposed gypsum are in the eastern part of the survey area. lncluded in mapping are small, isolated areas of llde- fonso, Lazear, Ansari, Begay, Heldt, and Dollard soils. These intermittent areas make up 10 to 20 percent of this map unit. This complex is used for grazing, wildlife habitat, and recreation. The stones on the surface and the steep slopes make this complex unsuitable for crops. Some areas can be reseeded to pasture by broadcast seeding. Other plant- ing methods are made difficult by the stones and slopes. The native vegetation includes wheatgrasses, blue- grasses, lndian ricegrass, needlegrasses, bitterbrush, mountainmahogany, sagebrush, and an overstory of pinyon and juniper. The value of grazing is fair. The vegetation should be managed to maintain wood production and limited graz- ing. Selectively thinning the pinyon and iuniper improves grazing and provides firewood and posts. Steep slopes, moderate to severe erosion hazard, and slow regrowth of trees affect harvesting and management. Most of this complex is a prime wintering area for deer. Rabbits, coyote, and a few elk also find food and cover on this complex. Building is limited by steep slopes and stoniness. These limitations can be overcome by appropriate design and construction. 37 This complex is in capability subclass Vlle, nonirrigat- ed. 67-Torriorthents-Bock outcrop complex, steep. This broadly defined unit consists of exposed sandstone and shale bedrock and stony soils that are shallow to moderately deep over sandstone and shale and stony basaltic alluvium. Areas of this complex occur throughoui the survey area. The soils and outcrops are modeiately steep to very steep. Slope ranges from 15 to 70 percent. Torriorthents make up about 60 percent of this com- plex, and Rock outcrop makes up 25 percent. The Tor- riorthents are on foothills and mountainsides below the Rock outcrop. Torriorthents are generally clayey to loamy and con-tain variable amounts of gravel, cobbles, and stones. The surface is normally covered with stones weathered from the higher-lying Rock outcrop. South of the Colora- do River, stones and cobbles of basalt are on the sur- face. The Rock outcrop is mainly Mesa Verde sandstone and Wasatch shale. Some areas are covered with basal- tic boulders and stones. Small areas of limestone out- crops and exposed gypsum are in the eastern part of the survey area. lncluded in mapping are small isolated areas of llde- fonso, Lazear, Ansari, Gaynor, Tridell, and Nihill soils. These intermittent areas make up 10 to 15 percent of this map unit. This complex is used for limited grazing, wildlife habi- tat, and recreation. Because of the stones on the surface, the Rock out- crop, and the steep slope, this complex is unsuited to crops. The native vegetation includes wheatgrass, bluegrass, lndian ricegrass, needlegrass, bitterbrush, sagebrush, mountainmahogany and an overstory of pinyon and juni- per. The vegetation should be managed to maintain wood production and limited grazing. Selectively thinning the pinyon and juniper improves grazing and provides fire- wood and posts. Steep slopes, moderate to severe ero- sion hazard, and slow regrowth of trees affect harvesting and management. Most of this complex is a prime wintering area for deer. Rabbits, coyote, and a few elk also find food and cover on this complex. Community development is limited by the Rock out- crop, steep slopes, and stoniness. These limitations canbe overcome by appropriate design and construction. This complex is in capability subclass Vlle, nonirrigat- ed. 68-Vale silt loam, 3 to 6 percent slopes. This deep, well drained, gently sloping soil is on mesas, terraces, and alluvial fans. Elevation ranges from 5,000 to 7,200 feet. This soil formed in calcareous eolian material. The ]r, or=o, coLoRADo Il. ,.ri., -The Arle series consists of moderately deep, well fiined soils that formed in residuum from ied shile and*rdstone. Arle soils are on ridges and hills in the up- lands. Slopes are 12 to 65 percent. The average annual rycipitation is about 18 inches, and the average annualil temperature is about 43 degrees F. -Ade soils are similar to Tridell soils. Tridell soils con_ flr,,1..","'" horizon and are calcareous throughout the 'Eypical pedon of Arle very stony loam, 12 to 65 per- cent slopes, about 2,450 feet north and 400 feet east of ft southwest corner, section 24, T. 6 S., R. gg W.: il-O to 1O inches; reddish brown (SyR 4/3) very stony loam, dark reddish brown (SYR g/3) moist; modei- I ate medium granular structure; soft, very friable; 40 ! percent flagstones; mildly alkaline; gradual smooth boundary. %-10 to 19 inches; reddish brown (SyR 4/4) very ! stony loam, reddish brown (SyR 3/4) moist; moder-I ate medium subangular blocky structure parting to moderate medium granular; slightly hard, very fri- 1 able; 40 percent flagstones; slighily calcareous; I moderately alkaline; clear waly boundary. Ctla-1g to 32 inches; reddish brown (5yR 5/4) very _ stony loam, reddish brown (SyR 4/4) moist; mas- I sive; hard, very friable; 60 peicent flagstones; visible! accumulations of secondary calcium carbonate as small lime concretions and as coatings on under- - sides of coarse fragments; strongly calcareous; I moderately alkaline; clear wavy boundary. CF42 to 60 inches; soft reddish brown sahdstone and shale. lne mottic epipedon ranges from 7 to 15 inches in tltlEkness. Depth to the paralithic contact ranges from 20 to 40 inches. ln places this soil is leached to a depth ofLo 15 inches. Coarse fragments make up 35 io g0 flcent, by volume, of the soil. The A horizon has hue of 2.5YR to SyR, value of 4 or 5.$ry and 2 or 3 moist, and chroma of 3 to 6. The Bhlizon has hue of 2.5YR to SYR, value of 4 to 6 dryaf, g to 5 moist, and chroma of 3 to 6. The C horizon has hue of SYB to 1OR. t.o" series The Arvada series consists of deep, well drained soilst[ formed in alluvium derived from'shale. Arvadas soila! on benches, terraces, and outwash fans. Slopes are 1 to 20 percent. The average annual precipitation is 12 flr:rJ"ilO the average annuat air temperature is 48 Irvada soils are similar to Heldt and potts soils. Heldt soils do not have a natric horizon or an argillic horizon. I Potts soils are less than 35 percent clay in the control section and do not have a natric horizon. . Typical pedon of Arvada loam, 1 to 6 percent slopes, about 2,640 feet south and 200 feet east of the n6.tn- west corner of section 34,f .7 S., R. g6 W.: A2-0 to 3 inches; pale brown (1OyR 6/3) loam, brown (1OYR 5/3) moist; moderate medium platy structure parting to weak fine granular; soft, friable, calcare- _ _ . ou!; strongly alkatine; abrupt smooth boundary. B21t-3 to 7 inches; brown (7.SyR 5/2) sitty clay toam, dark brown (7.5YR 4/Z) moist; weak coarse colum- nar. structure parting to moderate medium subangu- lar blocky; hard, firm, slighfly sticky and slightly plis-tic; thin patchy clay films on peds; cilcareous; strongly alkaline; clear smooth boundary. B22l-7 to 17 inches; brown (Z.SYR 5/2) sitty ctay loam, dark brown (7.5YR 4/2) moist; moderate medium subangular blocky structure; hard, firm, sticky andplastic; thin, nearly continuous clay films on peis; 15 percent white ('tOYR 8/2) salt accumulations; calcar- ^ eous; strongly alkaline; clear smooth boundary. Ccasa-17 to 40 inches; light brown (7.SyR 6/4) silty clay loam, dark brown (7.5yR 4/2) moist; massive; very hard, firm, sticky and plastic; calcium carbonate accumulations as seams and mycelia; some gypsum crystals on peds; 30 percent white (10yR ai2) saft accumulations; calcareous; strongly alkaline; gradual smooth boundary. C-40 to 60 inches; brown (7.SyR 5/3) sitty clay loam, dark brown (7.5YR 4/2) moist; few fine yellowish. brown mottles (1OYR 5/8); massive; very hlrd, firm, slightly sticky and stighfly plastic; 15 percent white (1OYR 8/2) salt accumulations; calcareous; moder- ately alkaline. The solum ranges from 15 to 25 inches in thickness. Depth to calcareous material ranges from 0 to g inches. A thin 41 horizon is present in some pedons. The light colored, platy A2 horizon is absent in some pedons. The A horizon has hue of 2.5y or 10yFl, valueof S or6 dry and 4 or 5 moist, and chroma of 2 to 4. The A horizon ranges from moderately alkaline to very strongly alkaline. The B horizon has hue of 1OyR or 7.5yR, val-ue of 5 or 6 dry and 4 or 5 moist, and chroma of 2 to 4. The C horizon has hue of 10yR or 7.5yR, value of 5 to 7 dry and 4 or 5 moist, and chroma of 2 to 4. Ascalon series The Ascalon series consists of deep, well drained soilsthat formed in alluvium derived from sandstone and shale. Ascalon soils are on alluvial fans and sloping mesas. Slopes are 1 to 12 percent. The average annual precipitation is about 15 inches, and the average annual air temperature is about 48 degrees F. 53 SOIL SURVEY54 Ascalon soils are similar to Morval and Vale soils. Morval soils have a loamy skeletal substratum above a depth of 40 inches. Vale soils have a fine silty control section. Typical pedon of Ascalon fine sandy loam, 1 to 6 percent slopes, about 1,000 feet north of the south quar- ter-corner of section 1, T. 5 S., R. 93 W.: A1-O to 5 inches; brown (10YR 5/3) fine sandy loam, dark brown (1OYR 3/3) moist; fine granular struc- ture; soft, very friable, mildly alkaline; gradual wavy boundary. 81-5 to 13 inches; brown (10Y8 5/3) sandy clay loam, dark brown (1OYR 3/3) moist; moderate fine suban- gular blocky structure parting to strong fine granular; stigntty hard, very friable, slightly st'rcky and slightly plastic; mildly alkaline; clear smooth boundary. B2t-13 to 30 inches; yellowish brown (1OYR 5/4) sandy clay loam, dark yellowish brown (1OYR 3/4) moist; moderate fine and medium subangular blocky struc- ture; thin clay films on some faces of the peds; slightly hard,'very friable, sticky and plastic; mildly alkaline; clear smooth boundary. B3ca-30 to 35 inches; yellowish brown (10YR 5/4) sandy clay loam, dark yellowish brown (1OYR 4/4) moisi; weak fine subangular blocky structure; slightly hard, very friable, sticky and plastic; visible carbon- ates in seams and as concretions; calcareous; mod- erately alkaline; clear wavy boundary. Cca-35 io 60 inches; very pale brown (10YR 8/4) sandy clay loam, very pale brown (1OYR 7/4) moist; massive; slightly hard, very friable, stlcky and plastic; finely disseminated carbonates throughout horizon; calcareous; moderatelY alkaline. The mollic epipedon ranges from 9 to 16 inches in thickness. The profile is mildly alkaline to moderately alkaline throughout. The A horizon has hue of 2.5Y or 10YR, value of 4 or 5 dry and 2 or 3 moist, and chroma ol 2 or 3. The B horiion has hue of 7.5YR or 10YR, value of 5 or 6 dry and 3 or 4 moist, and chroma of 2 to 4. The Cca horizon has hue of 2.5Y orIOYR, value of 7 or 8 dry and 6 or 7 moist, and chroma of 1 to 4. Calcium carbonate equiva- lent is less than 15 percent in the Cca horizon. Atencio series The Atencio series consists of deep, well drained soils that lormed in alluvium derived from red sandstone and shale. Atencio soils are on sloping fans and terraces. Slopes are 1 to 3 percent. The average annual precipita- tion is about 16 inches, and the average annual air temperature is about 48 degrees F. Atencio soils are similar to Vale soils' Vale soils have more silt, and they do not have gravel in the upper part of the profile. Typical pedon of Atencio sandy loam, 1 to 3 percent slopes, about 320 feet north and 150 feet west of the southeast corner of section 35, T. 6 S', R. 89 W.: A1-O to 5 inches; dark reddish gray (SYH 4/2) sandy loam, dark reddish brown (sYR 3/2) moist; moder- ate medium granular structure; soft, loose; 5 percent gravel; mildly alkaline; clear smooth boundary.gt-S to tt inches; reddish brown (sYR 4/3) sandy loam, dark reddish brown (sYR 3/3) moist; weak medium subangular blocky structure; slightly hard' very friable; 5 percent gravel; mildly alkaline; clear smooth boundary. B2t-1'l to 23 inches; reddish brown (sYR 4/4) gravelly sandy clay loam, reddish brown (sYR 5/4) moist; moderate medium prismatic structure parting to weak medium subangular blocky; hard, friable, slightly sticky and slightly plastic; '15 percent gravel; calcareous; mildly alkaline; clear smooth boundary. B3ca-23 to 28 inches; brown (7.5YR 5/4) gravelly sandy loam, dark brown (7.5YH 4/4) moist; weak medium subangular blocky structure; slightly hard, friable; 20 percent gravel; calcium carbonate as coatings on underside of gravel and as soft concre' tions; calcareous; mildly alkaline; clear smooth boundary. llCca-28 to 54 inches; sand, gravel, and cobbles; cal- careous; some visible calcium carbonate as coatings on coarse fragments; 30 percent cobbles, 30 per- cent sand, 40 Percent gravel. The mollic epipedon ranges from 9 to 15 inches in thickness. Depth to the underlying sandy material ranges from 23 to 3A inches. Reaction is mildly alkaline to mod- erately alkaline throughout. The A horizon haJhue of 2-5YR to 7.5YR, value of 4 or 5 dry and 2 or 3 moist, and chroma of 3 to 5' Gravel or cobbles make up less than 10 percent of the A hori- zon. The B2t horizon has hue of 10R to 5YR, value ol 4 to 6 dry and 3 to 5 moist, and chroma of 3 to 5' Content of coaise fragments ranges from 5 to 35 perce!! T!? llCca horizon-is 20 to 40 percent cobbles and 35 to 50 percent gravel. Azeltine series The Azeltine series consists of deep, well drained soils that formed in gravelly and cobbly alluvium derived from mixed sedimen{ary and igneous rocks. Azeltine soils are on terraces, benc-hes, ant fans adjacent to malor drain- ageways. Siopes are 1 to 3 percent. The average annual piecipiiation is about 16 inches, and the average annual air temperature is about 48 degrees F. Azeltine soils are similar to Kim soils. Kim soils do not have a mollic epipedon and do not contain coarse frag- ments in the lower part of the control section. 66 ate medium subangular blocky; slightly hard, very friable; common clay films on peds; calcareous; mildly alkaline; clear smooth boundary. BSca-18 to 33 inches; light gray (1OYR 712) sandy clay loam, dark grayish brown (1OYR 4/2) moist; weak coarse subangular blocky structure parting to weak medium subangular blocky; slightly hard, very friable, visible calcium carbonate as concretions, seams, and streaks; calcareous; moderately alkaline; clear wavy boundary. Clca-33 to 43 inches; light gray (10YR 7/2) graveltT sandy clay loam, grayish brown (1OYFI 5/2) moist; massive; hard, very friable; 25 percent gravel and cobbles; visible calcium carbonate as concretions, seams, and streaks; calcareous; moderately alkaline; clear wavy boundary. C2ca-43 to 60 inches; light gray (10YR 7/2) very grav- elly sandy loam, grayish brown (1OYR 5/2) moist; massive; slightly hard, friable; 30 percent gravel and 10 percent cobbles; visible calcium carbonate as concretions, seams, and streaks and as coatings on gravel and cobbles; calcareous; moderately alkaline. Depth to calcareous material ranges from 10 to 20 inches. The solum ranges from 20 to 35 inches in thick- ness. The control section averages more than 35 per- cent fine and coarser sand. The A horizon has hue of 2.5Y or 10YR, value of 5 or 6 dry and 3 or 4 moist, and chroma of 2 or 3. The B horizon has hue of 2.5Y or 1OYR, value of 5 or 6 dry and 4 or 5 moist, and chroma of 2 to 4. The Cca horizon has hue of 10YR, value of 7 or 8 dry and 5 or 6 moist, and chroma of 2 or 3. Parachute series The Parachute series consists of moderately deep, well drained soils that formed in residuum from sand- stone or marlstone. Parachute soils are on mountain- sides. Slopes are 5 to 65 percent. The average annual precipitation is about 20 inches, and the average annual air temperature is about 40 degrees F. Parachute soils are similar to Northwater and Rhone soils. Northwater and Rhone soils are deep. Typical pedon of Parachute loam, 5 to 30 percent slopes, 75 feet north and 150 feet west of the southeast corner of section 25,T.4 S., R. 96 W. (fig. 9): A1-0 to 5 inches; grayish brown (1OYR 5/2) loam, dark brown (1OYR 3/3) moist; weak fine subangular blocky structure parting to moderate fine granular; slightly hard, very friable, slightly sticky and slightly plastic; many fine roots; neutral; clear smooth boundary. 821-5 to 13 inches; very dark grayish brown (10YR 3/2) loam, very dark brown (1OYR 2/2) moist; mod- erate medium subangular blocky structure; slightly SOIL SURVEY hard, very friable, slightly sticky and slightly plastic; 10 percent fine channery fragments; many fine roots; neutral; clear smooth boundary. 822-13 to 18 inches; brown (10YR 5/3) loam, brown (1OYR 4/3) moist; weak medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; 10 percent fine and medium chan- nery fragments; common fine and medium roots; neutral; clear wavy boundary. B3-18 to 29 inches; light yellowish brown (1OYR 6/4) extremely channery loam, yellowish brown (1OYR 5/4) moist; weak coarse subangular blocky struc- ture; hard, friable, sticky and plastic; 80 percent channery fragments mostly 3/4 inch to 3 inches in size; few medium and line roots; neutral; clear wavy boundary. R-29 inches; hard slightly fractured sandstone and marlstone. The mollic epipedon ranges from 10 to 15 inches in thickness. Depth to the lithic contact ranges from 20 to 40 inches. Texture of the control section is typically loam, but clay content ranges from 18 to 35 percent. Content of rock fragments, most of which are 3/4 lo 3 inches long, range from 35 to 85 percent, by volume. The Al and 82 horizons have hue of 7.5YR to 2.5Y, value of 4 or 5 dry and 2 or 3 moist, and chroma of 2 or 3. The 83 and C horizons, where present, have hue of 7.5YR to 2.5Y, value of 6 or 7 dry and 4 or 5 moist, and chroma of 3 or 4. Pena series The Pena series consists of deep, well drained soils that formed in calcareous alluvium derived from sand- stone and shale. Pena soils are on valley sides. Slopes are 6 to 25 percent. The average annual precipitation is about 12 inches, and the average annual air temperature is about 48 degrees F. The Pena soils are similar to Tridell soils. Tridell soils have a lrigid temperature regime. Typical pedon of Pena stony loam, 6 to 25 percent slopes, about 1,300 feet east and 200 feet north of the southwest corner of section 13, T. 5 S., R.90 W.: A1-0 to 6 inches; dark grayish brown (1OYR 4/2) stony loam, very dark grayish brown (10YR 3/2) moist; weak fine granular structure; loose, very friable; 30 percent large stones and cobbles; mildly alkaline; clear smooth boundary. AC-6 to 12 inches; dark grayish brown (1OYR 4/2) very stony loam, very dark grayish brown (10YR 3/2) moist; weak, fine subangular blocky structure; slight- ly hard, friable; 40 percent large stones and cobbles; calcareous; mildly alkaline; gradual smooth bound- Ary. RIFLE AHEA, COLORADO C1-12 to 30 inches; very pale brown (10yR 7/3) very stony sandy loam, brown (10YFt 5/3) moist; weak fine subangular blocky structure; slighily hard, very friable; 45 percent large stones; calcareous; moder- ately alkaline; gradual wavy boundary. C2ca-30 to 60 inches; very pale brown (1OYR 8/3) very stony sandy loam, pale brown (10yR 6/3) moist; massive; slightly hard, friable; 45 percent large stones; visible secondary calcium carbonate as fine seams and soft concretions; calcareous; moderately alkaline. Depth to the Cca horizon is 15 to 30 inches. Content of rock fragments ranges from 35 to 55 percent. The mollic epipedon ranges from 8 to 16 inches in thickness. The A horizon has hue of 10YR or 7.5YFl, value of 3 or 4 dry and 2 or 3 moist, and chroma ol Z or 3. The AC horizon has hue of 10YR or 7.5YR, value of 4 or 5 dry and 3 or 4 moist, and chroma of 2 to 4. The C horizon has hue of 10YR or 7.5YR and has more than 15 per- cent calcium carbonate equivalent. Potts series The Potts series consists of deep, well drained soils that formed in alluvium derived from sandstone, shale, or basalt. Potts soils are on moderately sloping mesas, benches, and valley sides. Slopes are 1 to 12 percent. The average annual precipitation is about 14 inches, and the average annual air temperature is about 45 degrees F. Potts soils are similar to Olney soils. Olney soils have more than 35 percent fine and coarser sand in the con- trol section. Typical pedon of Potts loam, 3 to 6 percent slopes, 1,300 feet north and 1,300 feet west of the southwest corner of section 3, T. 7 S., R. 92 W.: A1-0 to 4 inches; brown (7.5YR 5/4) loam, dark brown (7.5YR 3/2) moist; weak medium platy structure parting to moderate fine granular; slightly hard, fri- able; mildly alkaline; clear smooth boundary.B1-4 to 11 inches; reddish brown (sYR S/4) heavy loam, dark reddish brown (sYR g/4) moist; weak medium prismatic strueture parting to moderate fine subangular blocky; hard, firm, slightly sticky and non- plastic; mildly alkaline; clear smooth boundary. B2t-11 to 20 inches; reddish brown (sYR 5/4) light clay loam, reddish brown (sYR 4/3) moist; moderate medium subangular blocky structure parting to mod- erate fine subangular blocky; very hard, firm, slighily sticky and slightly plastic; calcareous; moderately al- kaline; gradual smooth boundary. B3ca-20 to 28 inches; reddish brown (5YR 5/a) tight clay loam, reddish brown (sYR 4/4) moist; weak medium subangular blocky structure parting to mod- erate fine subangular blocky; hard, firm, slightly 67 sticky and nonplastic; common fine round lime con- cretions; calcareous; strongly alkaline; clear smooth boundary. Cca-28 to 60 inches; pinkish white (SYR B/Z) toam, light reddish brown (sYB 6/4) moist; massive; hard, firm; visible disseminated calcium carbonate; calcar- eous; strongly alkaline. Depth to calcareous material ranges from g to 1g inches. ln many places, the lower part of the C horizon has 10 to 15 percent gravel and cobbles. These frag- ments increase in quantity with depth. The A horizon has hue of 7.5YR or SYR, value of 5 or 6 dry and 3 or 4 moist, and chroma of 2 to 4. The B horizon has hue of 5YR or 2.5YR, value of 5 or 6 dry and 4 or 5 moist, and chroma of 3 to 5. Rhone series The Rhone series consists of deep, well drained soils that formed in residuum from sandstone and marlstone. Rhone soils are on mountainsides and ridges. Slopes are5 to 70 percent. The average annual precipitation is about 20 inches, and the average annual air temperature is about 40 degrees F. Rhone soils are similar to Silas, Northwater, and para- chute soils. Silas soils contain 0 to 15 percent rock fragments throughout. Parachute soils have lithic contact at a depth of 20 to 4O inches. Northwater soils have an argillic horizon. Typical pedon of Rhone loam, 5 to 30 percent slopes, about 300 feet south and 200 feet east of the northwest corner of section 13, T. 5 S., R. 96 W.: All-0 to 8 inches; brown (10YR 4/3) loam, very dark grayish brown (10YR 3/2) moist; weak fine granular structure; soft, very friable, slightly sticky and slightly plastic; many fine and very fine roots; neutral; clear waly boundary. 412-8 to 15 inches; brown (7.5YR 5/2) sandy clay loam, dark brown (7.5YR 312) moist; moderate medium subangular blocky structure parting to mod- erate fine subangular blocky; slightly hard, friable, slightly sticky and slightly plastic; neutral; clear wary boundary. A13-15 to 28 inches; brown (7.5YR 5/2) sandy ctay loam, dark brown (7.5YR 3/2) moist; moderate medium subangular blocky structure parting to weak fine subangular blocky; slightly hard, friable, slightly sticky and slightly plastic; neutral; clear wavy bound- 4ry. llC-28 to 52 inches; brown (7.5YR 5/4) very channery sandy clay loam, dark brown (7.5YR 4/2) moist; massive; slightly hard, friable, slightly sticky and slightly plastic; 40 percent channery fragments; neu- tral; abrupt wavy boundary. R-52 inches; fractured sandstone bedrock. CLINETOP RANCH SUBDIVISION March 25,1998 Page 55 of 81 CLINETOP RANCH SUBDIVISION DRAINAGE REPORT GARFIELD COUNry, COLORADO March 25, 1998 PREPARED FOR: Mr. & Mrs. Ralph Hubbell 401 23d Street Glenwood Springs, Colorado 81601 PREPARED BY: JEROME GAMBA & ASSOCIATES, INC. CONSULTING ENGINEERS AND LAND SURVEYORS MICHAEL GAMBA, P.E. 28036 G:\98687\PRELIMINARY PI-AN.doc CLINETOP RANCH SUBDIVISION March 25, 1998 Page 56 of 81 INTRODUCTION AND LOCATION The project location is shown on the vicinity map included with the preliminary plat submittal. The proposed improvements for the project site consist of two single-family residences with allowable accessory structures, and a single gravel access road. HYDROLOGIC AREA AND FLOW CALCULATIONS The hydrologic area affecting this property is depicted on the map of OFF-SITE DRAINAGE BASINS included in this report. This parcel of land is bisected by Main Elk Creek. The portion of the property immediately adjacent to the creek is subject to floods associated with Main Elk Creek. The approximate boundary of the 1O0-year flood plain of Main Elk Creek has been identified on the preliminary plat. Flood events larger than the 1O0-year flood may occur and would inundate a larger portion of this property. However, the flood event typically considered to be the minimum acceptable risk by local and national standards is the 1O0-year flood. Therefore, the building envelopes as depicted on the preliminary plat have been defined to remain outside of the 100-year flood plain of Main Elk Creek. Based on this, the tributary area of Main Elk Creek was not included in this drainage report. The portion of this property that lies east of Main Elk Creek is not proposed for development as depicted by the proposed building envelopes provided on the preliminary plat. Therefore, this area was not included in the tributary area for this drainage report. The remaining property which lies to the west of the 100-year flood plain of Main Elk Creek is situated on an alluvial fan created from a dry gulch to the west of the property. This dry gulch has a tributary area of approximately 357 acres. This total drainage basin was divided into 3 sub basins as shown in the map of OFF-SITE DRAINAGE BASINS. These three sub basins A, B, and C deliver stormwater to the northwest corner of the development property. The three sub basins were then analyzed based on topography, soiltypes, and vegetative cover. The maximum flows from this dry-gulch due to the 2S-year and 1O0-year rainfall events are approximately 382 cfs and 522 cfs respectively. The alluvial fan has been created through the accumulation of debris flow andior mudflow material, which has been carried with the flows produced by these large storm events. The potential remains for future debris flow/ mudflow events that could have a significant impact on this property. HYDROLOGIC CRITERIA AND METHODOLOGY Runoff flows for the 3 sub-areas of the off-site basins were calculated using the U.S. Department of Agriculture Soil Conservation Service Technical Release No 55 Procedures for determining Peak Flows in Colorado. The overland flow for each sub-area was broken into three categories as they applied to each specific subarea. The three flow types are sheet flow, shallow concentrated flow, and channel flow. The rate of runoff for the 25-year and the 10O-year design frequency storm event was computed using the rain fall values from the NOAA Atlas 2, Precipitation Frequency Atlas of G:\98687\PRELIMINARY Pl-AN.doc CLINETOP RANCH SUBDIVISION March 25, 1998 Page 57 of 81 the Westem United Sfafes, Volume lll-Colorado 7973, included in the T.R. 55 publication. The sub- basin areas, hydrologic curve numbers, times of concentrations, travel time, and peak discharges for the 25-year and 1O0-year storm events are included in this report. POST.DEVELOPMENT DRAINAG E IMPACTS Due to the extremely large off-site basin relative to the proposed on-site improvements, the affect of the development of this site will not increase the peak off-site drainage into Main Elk Creek during the 1O0-year flood. Therefore, the construction of detention ponds will not be necessary for the mitigation of the drainage impacts related to this development. DEBRIS FLOW HAZARD ANALYSIS AND MITTGATION As stated above, we calculated the peak flow from the off-site drainage basin for the 1O0-year storm event to be approximately 522 cubic feet per second. Due to the existence of the alluvial fan, it is obvious that debris flows and mudflows have historically been produced from the off-site drainage basin and there is no information to indicate that this alluvialfan is extinct. On this basis, the entire site proposed for development is subject to potential flooding from the 100-year flood emanating from the off-site drainage basin. However, alluvialfan hydrology differs from stream channel hydrology in several ways. lf a 100-year flood were to occur within a stream channel, there is a 100% probability that all areas within the 1O0-year flood plain would be inundated with water. However, if a 100-year flood occurs on an alluvial fan, only a portion of the alluvial fan will experience the flood impacts. This is primarily due to the fact that most alluvialfans do not have an entrenched channel with the hydraulic capacity to convey the 1O0-year flow including the accompanying debris. Furthermore, the debris accompanying the stormwater frequently creates obstructions, which diverts the flow in a different direction. Based on a site investigation, we have determined that the most likely out-fall of the 10O-year flood and the accompanying debris is directly across the county road from the northwest corner of the propefi. From this point there is virtually an equal probability that the storm-water/debris-flow will flow in any direction. This flood flow could continue due east along the northern property line of the development, due south along the county road, or anywhere in between, which encompasses the entire development. Based on this potential hazard, we have provided several alternate recommendations to adequately mitigate the potential hazard. The first recommended debris flow mitigation is based on the protection of the entire development property. This method requires the construction of a debris flow diversion berm along the northern and western property boundaries of the proposed development. According to the hydraulic calculations provided in this report, the peak flow of the 100-year storm from the off-site basin can be adequately conveyed in a trapezoidal channelwith the following section data: Slope = approximalely 4o/oi Bottom Width = 24.0 feet; left and right side slopes = 2 .0H to 1.0V; and the depth is 2.0 feet. This channel cross section can essentially be created by simply constructing a debris flow diversion berm immediately inside the fence along the northem and westem property boundaries. As noted above, a debris flow has the potentialto create its own obstruction in any channel and divert itself in a different direction. Published studies of debris flow analysis and mitigation have G:\98687\PRELIMINARY PLAN.doc CLINETOP RANCH SUBDIVISION March 25, '1998 Page 58 of 81 suggested that the path of debris flows can be controlled through very dense vegetation. These studies found that when the debris flow encountered an area of very dense vegetation, the debris flow was largely diverted around the vegetation. Based on this, we further recommend that the outside slope and the top of the berm be densely planted with native brush and trees, such as oak brush, service berry, choke cherry, juniper, etc. The faster growing species would be preferable in order to provide the added protection more quickly. lf this method of mitigation is selected, there is no need to construct the diversion berms until the commencement of construction for either of the proposed single family residences. The second proposed method of debris flow mitigation is related to the more specific site grading associated with the construction of the proposed single family residences. A diversion berm as - recommended above, could be constructed above each individual residence instead of along the property boundary. A third method of debris flow mitigation could be incorporated into the site grading adjacent to each residence. This would require that the house be sited in such a manner as to provide positive drainage away from the house providing a minimum of 3.0 feet of elevation difference between the finished floor elevation or tops of basement window wells and the lowest ground elevation in any direction extending away from the house. The site grading should be performed in such a manner as to provide a triangular drainage channelwith the following minimum section data: Slope = approximately 4%; left and right side slopes = 10.0H to 1 .0V; and the depth is 3.0 feet. Additional methods exist for mitigating the potential hazards associated with a debris flow on this property which are not discussed here. ln any case, the specific design for the mitigation method selected should be performed and inspected by a registered professional engineer well informed with respect to debris flow mitigation. CONCLUSIONS As shown in this report, the construction of this development will not increase the peak stormwater flows from either the off-site basin or the entire Main Elk Creek basin. Additionally, the stormwater runoff and associated debris flow hazards from the off-site basin can be mitigated with one of the methods described above. G:\98687\PRELIMINARY PLAN.doc .,--^l I I I I I ( rl .) \ I I l I tl ( I I L- iI 'i. (.)(:)z .-l."ir li nTl. -\..- i ( ,.,1 In tl a 5L!I U]z lt) l) a-\r -t\ 2 F] r-tF '- --l/)-n l,-t'7.o rtr!xi7J n L^rlI p1 fJ pllr -\):r) ;x =1;(J _- ,7 l)fi n\:< rr(,)x'- >/ ttt -v,) >-.->5 lYz,: (./) a\ I f,] :: \ 1 t\ ;-/ 4- v/^H () u C)'N) F.(n T I I I I I I I I I I I t I I I I t I t:: I IY PROPOSED BERM LOCATION PLAN CTINETOP RANCE HUBBELL PROPERTY. COUNTY ROAD 243 MAIN ELK CREEK, NEW CASTLE, CO. t' - 2OO' D'ITEI r^no{ 25. 1996 s}IEEI t62 JEROIilE GAIilBA & ASSOCIATES, II.IC. coEln3aoB rull)8fiErffiIl8AVl{ 3Yt ICI CIXD BYt L.E BYt L.E FLAll ]'II o8-mr9rE I I I I I I t I I t I I I I I I I I t HUBBELL PROPERTY - It!o IF-9 E. F G,lrJ(Lo E, o- 2.0000'RE\EG BERM WTH NATIVE GRASS MIX E. ozlo(D O .09 lbs PURE Ll!€ SEED PER 100 sq. ft. ?c 1 e.0000' NOTE: BERM TO BE HEAVILY VEGETATED WITH OAK BRUSH, SERVICE BERRY, AND JUNIPER ON 2.0' CENTERS. DETAIL OF DRAINAGE DIVERSION BERM CLINETOP RANCH HUBBELL PROPERTY, COUNTY ROAD 243 MAIN ELK CREEK, NEW CASTLE. CO. DAIET r^80r 25. r99tl'r ? Sc,lLE,SHfEI 262 DIAYrl lY, Lcta C}XD IY, I.E APPD tY, ta& PLAT' TG B.fir-datol JEHOiTE C,AirBA & ASSOCIATES, rc. COEINBElqB Tl.rloEElEYffi Cross Section Cross Section lor Trapezoidal Channel Project Description ff.trZ Worksheet HUBBELL DRAINAGE GULLEY Flow Element TrapezoidalChannel Method Manning's Formula Solve For Channel Depth Section Data Mannings Coefficient Channel Slope Depth Left Side Slope Right Side Slope Bottom \A/idth Discharge 0.037 0.040000 fuft 1.76 ft 2.000000 H :V 2.000000 H :V 24.00 ft 522.00 cfs 24.OO tt 1.76 ft \ H1 NTS FlowMaster v5.15 Page 1 of 'l ,| o3t24l9A 01:33:50 PM Haestad Methods, lnc. 37 Brookside Road Waterbury, CT 06708 (203) 755-1666 Drainage diversion structure above house Cross Section for Triangular Channel Project Description Project F Worksheet diversion grading around house Flow Element Triangular Channel Method Manning's Formula Solve For Channel De Section Data Mannings Coefficient Channel Slope Depth Left Side Slope Right Side Slope Discharqe 0.040 0.040000 fuft 2.47 ft 10.000000 H : V 10.000000 H :V 522.00 cfs 2.47 ft 1 \ H1 NTS o3/25l98 06:38:43 PM FlowMaster v5.15 Page 1 of 1Haestad Methods, lnc, 37 Brookside Road Waterbury, CT 06708 (2O3) 755-1666 CLINETOP RANCH SUBDIVISION March 25, 1998 Page 59 of 81 APPENDIX E WATER SUPPLY PLAN G:\98687\PRELIMI NARY PLAN.doc I rrrrrI IIIIIIIIII - ITIII I TIIII FIESOUFICE ENGINEEFIING INC Mr. Ron Liston Land Design Partnership PO Box 517 Glenwood Springs CO 81602 March 23, 1998 RE: Hubbell Lot Split Dear Ron: Resource Engineering, lnc. has reviewed the well pump test data for Hubbell Wells 1 and 2 which were recently completed on the Hubbell property along Middle Elk Creek. Copies of the pump test results from Samuelson Pump Co. are attached. Both wells are shallow wells completed in the alluvialformation. Each was pump tested at rates exceeding the proposed maximum pumping rate of 15 gpm. Well No. 1 was pump tested for 4 hours with 4%" of drawdown and complete recovery in 2 minutes. Well No. 2 was pumped for t hour with zero measurable drawdown. Based upon the location of these wells in the Elk Creek alluvium and the results of the pump tests it is our opinion that each has more than sufficient yield to meet the proposed water demand. We have been informed that water quality samples were taken and the results of the laboratory analysis will be available soon. We will be happy to review the water quality resutts when available. Sincerely, RESOURCE ENGINEERING, INC. a ul S. Bussone, P.E Water Resources Engineer PSB/mmm 695-1.0 rlpumptest.695.wpd Attachment Consulting Engineens and Hydnologists 9O9 Colonado Avenue I Glenwood Spnings, CO A1601 I t97Ol 945-6777 a Fax [97O] 945-1137 SAHUELSOT PUUP CO, IJIG. I EL: 5 /U5.{54{ubb WATEF SYIITEMS SALEII. SEBVICE T INSTAUANON 0as.in ENIP LUP PiBE|.lrr(-I Lba L t L.l,5l P.O. Ecrx 297 GLENTVOOD SPFINGS coroRAoo0'rGo:t ltarch 9, 1998 RalPh IIubbcI {01 23rd. st. 5u1te 102 Glenwood SPrlncs Co 81601 Attn, Ralph On February 19, 1999 a well test was conducted on new rell ll2 on utddle EIk Creek Property. The followlnq lntornatlon ra8 obtalned; well Depth--- Casing 81ze (top) Starrding water level--- Max- drawdowrr € 27.5 gPm------ groduction ls qreater than --- 6Z 7" 33 1 33 27 ( steel )r- llthr, . _{,. .5 qpm ThlS test waa conducted wiLh a I HP Goulds subFersl'ble model 13 GS. The well had no recovery tlme. The drawdown would lndicate a toEal production qreater than 27.5 9Pm' rf you have anyguestiongPleasecallmeRaurrsamuelsonatg?0-9{5-6309. "Z Iy; Raun Samuelson L6t L / L15 P LDP SAHUELSOX PUHP CO. IXG. TEL.31g3q54gE6 WATER SYSTEMS SALES. SEFVICE A INSTALIIT|oil 9.5.Eibe P b3I1RR- 'P.O. gOX 297 GLEiNilOOO SPH]NGS coLoBAoo r16(xl llarch 9, 1 998 Ralph Hubbel 401 23rd. St. Sulte 102 Glenwood Sprlnqs co 81601 ettn; Ralph On February 19,1998 a well test wag condueted on nev well#1 on Mllddle Elk Creek Property, The folloring Lnformationrar obtained; well Depth--- ------82rCasing rtzc (topl --7" (gtecll Hax. drawdown Q 25 qpm----- 53'- 2" Produetlon 1s qreater than---------25 qpm Thls test uas conducted wLth a I hp Goulds Submerelble model 13Gs. The well recovered back to 5zt- 9" in 2 mln. The drandown would lnCltcate a total production qreater than 25 gpm. ff you have guestions please call me Raun Sarnuelson at 9 70-9 { 5-5309 Sincerelv; Baun Samuelson CLINETOP RANCH SUBDIVISION March 25, 1998 Page 63 of 81 APPENDIX F PERCOLATION TEST REPORT G198687\PRELIMINARY PIAN.doc la HgpwoRrs-Pewler GeorrcnNtcel, INC. January 27,1998 Ralph Hubbell 40l23rd Street, Suite 102 Glenwood Springs, Colorado 81601 Subject Dear Mr. Hubbell 5020 Road 154 Glenwood Springs, CO 81601 Fax 97O 945-8454 Phone 970 945-7988 JobNo. 198 116 Percolation Testing, Proposed Clinetop Ranch Subdivision, 4800 County Road 243, Main Elk Creek, Garfield County, Colorado As requested, we have conducted percolation testing at the subject site to evaluate the feasibility of infiltration septic disposal systems. The results of our work are presented in this report. The work was done in accordance with our agreement for geotechnical engineering services to you dated January 16, 1998. excavated by others prior to our arrival on site. The test holes were pre-soaked and covered with rigid foam insulation to protect against freezing ovemight on January 20,1928_. The subsoils oSserved in the profile pit at Area 1 consisted of about 1 foot of topsoil and 6 feet of sandy-clay and clayey sand-with sCattered gravel. The subsoils at Area 2 and 3 consisted of 1% feet of topsoil and 2 feet of sandy clay and clayey sand overlyiqg cl.ayey san-dy-gravel with cobbles. No fr6e water was encountered in the profile pits and the subsoils were slightly moist to moist. Three proposed septic disposal areas were tested. A profile pit and three shallow backhoe pits had been excavated in each of the areas shown on Fig. l. The backhoe pits and test holes were Percolation test were performed in the test holes on January 21, 1998 by a representative of Hepworth-Pawlak Geotechnical, Inc. The percolation test results are summarized on Table I. Th6 percolation test results indicate infiltration rates between 6 and 60 minutes per inch._ Average infiltration rates of 1 8 minutes per inch for Area 1, 43 inches per.inch for Area 2 and 10 minutes per inch for Area 3 were indicated from the testing. The percolation-rates were based on the last three reading of the tests. The faster rates indicated for Area 3 were due to the gravels being encountered at relatively shallow depths. Based on the subsurface conditions encountered and percolation test results, the tested areas should be suitable for conventional infiltration septic disposal systems. If you have any questions or if we can of further assistance, please call our office. Sincerely, -PAWLAK GEOTECHNICAL, INC Jordy Z Rev D NAL - ORF ADa 29707 ; attachments Jr. P.E. (z L APPROXIMATE SCALE1' : 160' POND PARCEL 1 930 \ \ pARcEL 2\ \ \ -- P 3A\-:A aP 3B PRonLEta\\PIT P3C\ \ g35 -/ 925 / AREA 3 \940 - -- AREA 2 PROFILE)i[4"'- 925945 \ \ 930 950\ 955 960 \--t 28 \ I t \ \ \ \ \ \ I I \ \ \ PARCEL 3965 \\ \ \ 935\98 \ e40 COUNTY ROAD 243 LEGEND: I A PROFILE PIT PERCOLATION TEST HOLE Fig. 1198 116 HEPWORTH - PAWLAK GEOTECHNICAL. INC.LOCAIION OF PERCOLATION TEST HOLES I T I I I I I I HEPWORTH.PAWLAK GEOTECHNICAL, INC. TABLE I PERCOLATION TEST RESULTS JOB NO.198 116 Pa e 1of 3 NOTE: Percolation test holes were hand dug in the bottom of shallow backhoe pits and soaked on January 20, 1998. The holes were protected from freezing overnight with rigid foam insulation. Percolation test were conducted on January 21, 1998. The average percolation rate is determined from the lastthree readings. WATER DEPTH AT START OF INTERVAL (INCHES) WATER DEPTH AT END OF INTEBVAL flNCHESI DROP IN WATER LEVEL ilNCHES) AVERAGE PERCOLATION RATE (MrN./rNCHt HOLE NO HOLE DEPTH (INCHES) LENGTH OF INTERVAL (MIN} 38y,5y, 1Y286k 5Y2 16% 7 t/.5 2Y1 9Y.I 1% 8 6%1% 6%5%1 6Y2 1 14 20y, water added water added water added water added 15 7Yz P.1A 7 4%11% 5 27 b 2I 6 3%2Y. 21OYla% 6rA 2AY4 4%1Y26% 5y,1tA 9 24 water added water added water added 15 6% P.1B 10 8%1Y2 a%8 th %8 7Y4 6%%7% 6%6Y1 % %6Y.5% 7Y.|h7% 307%6'A Yz P-1C 51 water added 15 HEPWORTH.PAWLAK GEOTECHNICAL, INC. TABLE I PERCOLATION TEST RESULTS JOB NO.1 98 1 1 6 P 2ol 3 NOTE: Percolation test holes were hand dug in the bottom of shallow backhoe pits and soaked on January 20, 1998. The holes were protected from freezing overnight with rigid foam insulation. Percolation test were conducted on January 21, 1998. The average percolation rateisdeterrnined from the lastthree readings. AVERAGE PERCOLATION RATE (MtN./lNCH) LENGTH OF INTERVAL (MIN} WATER DEPTH AT START OF INTERVAL flNCHESt WATER DEPTH AT END OF INTERVAL (INCHESI DBOP IN WATER LEVEL flNCHES) HOLE NO.HOLE DEPTH (INCHES) 714 6%Y. 6%6Y.Y2 8 19 %I 7% 7Y.%7% 7%7y,% %7Y.7 60 water added water added 15 7 7 48P.2A 1%10 8r/, 7 t/2 1Yl8% 12 Y21zyz 11 112 %11 1otA 9Yz %1OY. 9Y2 I % 239a%% 55 water added 15P.2B tA6Y.5% 1AY27% "/.7Yz 6% 6%v,6% %6Y"s% Y.6%6Y2 6%tt v, %45 water added water added 15 b 5% P-2C 57 HOLE NO HOLE DEPTH ilNCHES) LENGTH OF !NTERVAL (MINI WATER DEPTH AT START OF !NTERVAL flNCHES) WATER DEPTH AT END OF !NTERVAL (INCHES) DROP IN WATER LEVEL (!NCHES) AVERAGE PERCOLATION RATE tMlN./!NCH) 10,4 7'A Zr/t 7y,5%1% 8%7 1% 9 7%1% 7%6%1% 6Yz 5t/.1Y. 54 water added water added water added 15 7%7 % P.3A 15 5Y.1%4 63/t 3%3 7 4t/t zYz 7 5 2 7 5 2 6Y.4%1yz 45 15 water added water added water added water added water added water added P.3B a%7y,1Y.I 3%0 3% 5%2 3% 4 0 4 5%3tA 2 5Y2 3 2% 3 0 3 P-3C 42 15 water added water added water added water added water added 'f E t/.1 t/.6 HEPWORTH-PAWLAK GEOTECHNICAL, INC TABLE I PERCOLATION TEST RESULTS JOB NO.198 116 3of3 Percolation test holes were hand dug in the bottom of shallow backhoe pits and soaked on January 20, 1998. The holes were protected from freezing overnight with rigid foam insulation. Percolation test were conducted on January 21, 1998. The average percolation rate is determined from the last three readings. NOTE CLINETOP RANCH SUBDIVISION March 25, 1998 Page 69 of 81 APPENDIX G INDIVIDUAL SEWAGE DISPOSAL SYSTEM OPERATION AND MAINTENANCE GUIDE G:\98687\PRELIMINARY PIAN.doc CLINETOP RANCH SUBDIVISION March 25, 1998 Page 70 of 81 OPERATION and IVAINTENANCE GUIDE PREPARED BY: Jerome Gamba & Associates, lnc. INDIVIDUAL SEWAGE DISPOSAL SYSTEM OPERATION AND MAI NTENANCE The following tips and suggestions are intended to increase the useful life of your engineered sewage disposal system and to prevent disposal system failure due to neglect and abuse. MINIMIZE THE LIQUIDS Wastewater that enters the system can be minimized by practicing water conservation practices within your home. The less wastewater you produce, the less wastewater there will be to treat and dispose. 1 Repair leaky fixtures. Check the toilet by dropping food coloring dye in the tank and see if it shows up in the bowl prior to flushing. Wash clothes only when you have a full load. Take short showers instead of baths. Don't turn on the shower all the way and turn it off while lathering. lnstall and use water saving fixtures and devices in your bathrooms, laundry rooms and kitchens. Do not let the water run while washing, shaving, brushing teeth, rinsing vegetables, dishes, etc. Use a stoppered basin where possible. Provide adequate drainage around the engineered system area to divert surface runoff from higher ground during storms or winter snowmelt. MINIMIZE THE SOLIDS Septic systems are "anaerobic" treatment systems. Digestion of solid materials is very slow and requires air or "aerobic" conditions to "disappea/'. The less material you put into the system, the less often it will require pumping. A good rule to follow is: G:\98687\PRELIMINARY Pl-AN.doc 2. 3. 4. 5. 6. CLINETOP RANCH SUBDIVISION March 25, 1998 Page 71 of81 "Don't use your septic system for anything that can be disposed of in some other way" 1 Avoid using a garbage disposal. Throw out scraps and other garbage with the trash. Collect grease in a container rather than pouring it down the sink. Minimize the disposal of paper products into the system. Non-degradable items such as disposable diapers, sanitary napkins, tissues, cigarette butts and paper towels are especially harmfulto the system. Only three things should go into the septic tank: Human Wastes; Toilet Paper; and Water. Ordinary household chemicals (bleaches, detergents & soaps) will not hurt the bacteria in your system when not used in excessive amounts. DO NOT DISPOSE OILS, PAINTS, THINNERS OR OTHER TOXIC LIQUIDS INTO YOUR SYSTEM. SEPTIC TANK ADDITIVES Advertised chemical additives, bacteria, enzymes, etc. do not help solids breakdown in the septic tank and should not be used to reduce the need for pumping the septic tank. REGULAR INSPECTIONS Septic Tank To inspect the septic tank, remove the manhole cover at the inlet end of the tank. Use a shovel to push the scum layer away from the side of the tank and estimate it's thickness. lf the scum layer is 12" thick or more, arrange to have the septic tank pumped immediately. Replace the cover and wash off the shovel and your hands. 2. 3. 4. 5 o G:\98687\PRELIMINARY PLAN.doc CLINETOP RANCH SUBDIVISION March 25, 1998 Page72 ot 81 For an average 3 or 4 bedroom residence, the pumping interval for the septic tank is usually between 2 and 4 years. Annual inspection of the septic tank should become part of your overall home maintenance routine. Dosing Tank or Pump Station: To inspect the dosing tank, follow the same instructions for the septic tank. However, there should not be a scum layer or sediments inside the tank. Check to see if the water level markings are consistent on the side of the tank. Variability indicates that the siphon or effluent pump is not operating properly. lf the water level is near the top of the markings, wait for the siphon or pump to operate and watch for problems. The siphon has an overflow pipe in which the effluent will flow out of the tank by gravity. Should this be occurring, have the tank pumped and check the siphon openings to see if they are plugged. Filter Mound or Trench: Check the observation tubes regularly. Standing water near the same elevation as the natural soil surface (or higher) may be an indication of trouble. Look for seepage or excessive wetness near the base of the filter mound or trench area. SUMMARY A general inspection of the septic tank, dosing tank (or pump station), filter mound or trench area should be made each year. These inspections are best made during the wet season of the year. lf these items are not routinely inspected, solids can carry over into the disposal areas from the septic tank and clog the system resulting in system failure and health hazard risk. ln areas with potentially high ground water, the septic tank should be pumped during low water months such as September, October, and November. Pumping during high water months may cause the septic tank to float out of the ground. G:\98687\PRELIMI NARY Pl-AN.doc CLINETOP RANCH SUBDIVISION March 25, 1998 Page 73 of 81 APPENDIX H TRI P GEN ERATION CALCU LATIONS G:\98687\PRELIMINARY PI.AN.doc * I I I I I I I I I T I I I I T t t t I No 6i .al -J <l =lo.l .sl -ld <I =l<I d'trtFlo <l oa oi N o\ N :! d'tr q ,Eo'c Itsci l! a'tr clfl d .El olitol <t otottI CI)l !tol-lllol6l 1l =lGI b1 6l 5ld <t cl,l 3lIIrl6lol 1l =lol .eldltl J <t clf,l oo U'du UJzo uzo F FtoLoz e.Fro UF5tFoz A 9lFI stui2lul(, cl EIFIIo @N o' N N- No u,to LoFozotrooo q -91g ddal(, olEIl-l !dt QI.9 :Pl 3 EFloi;qs- <lET EEO Crr r €€t 9 Eatrd2.r'EiioarFL6UE=Pl =q S d,$l i; aoi ,s o ci oE; ._o! I n CLINETOP RANCH SUBDIVISION March 25, 1998 Page 75 of 81 APPENDIX I SU BDIVISION APPLICATION FORM G:\98687\PRELIMINARY PIAN.doc SkeEch PlanPreliminar y Plan FinaI Plab SUBDIVISION APPLICATION FORM SUBDIVISION NAME:.ti +" OWNER:D Lrb €.rtaiyision V. iJ " bboll anc t o BNG r NEER/PLI\NNrlR/S URvEyOR, ) etOW c II I ?/wLOCATION: SecEion 3a Townslr tp 4S Range I;JIiIATER SOURCE:I;iJ uo(tsells SEWAGE DISPOSAL METIIoD: I a bS T I I I I I t I I I I I I PUBLIC ACCESS VIA: C U roaJ 3 EXISTING ZONING: EASEMENTS: Utility I c.) Dl tch ln TOTAT DEVELOPI.IENI' AREA: (1) Residentlal SingIe Famiy DuplexMuIti-famlly Moblle llome ( 2) Commerclal t Indus Er 1a I PubI lc,/Ouas i -prrb1 lc Open Space,/Common Area Numbe r Acres Z Z/.7Q Floor Area Acres (3) (4, (sl sq. ft. sq.ft. I TO'TA[,: PARKING SPACI1S: Res ldenLlal Z 7C I Commerc iaI Indusbrlal a CLINETOP RANCH SUBDIVISION March 25, '1998 Page77 oI81 APPENDIX J RELATIONSH I P TO COM PREH ENSIVE PLAN G:\98687\PRELIMI i'IARY Pl,AN.doc *CUNETOP RAAICIT' HUBBELL FAMILY SUBDIVISION APPUCATION t2/Ls/97 REU,TIONSHTP TO COMPREHENSIVE PIAN AGRICULTURE: The Hubbell family subdivision is very compatible wfuh agriorlture. Nothing in this devdopment could be seen as inhibiting farms and ranches from operating normally. The density is oaremely low, and the majority of our acreage will be kqt iu agriorltural production. Housing sites are located in areas of lowest agpiculrunl produaivity, and ditc;hes and fences will be meintainedto encourage good agrioiltural production. Dogp will be contained on the propeny and kenneled while owrers ere twey. HOUSING: !7hile the planned residences will be custom homes, they will provide horsing forthe owrers of the properry, who are 35-yar county residents. This is not a subdivision for resale to out-of-tosrn owners. There are cureotly no buildingp on the properry, and there is nothing of historicd significance on the properry. There are no adjacent industrial uses. Ifle are planning to build homes of high eoerBy efficiency rsing both passive and active solar design, with dlternative energy+Jficient materials such as adobe or perhaps even straw bale. RECREATION/OPEN SPACE: The developmeot will preserve at least 807o of its area as open space. Recreational oppornrnities will increase thto.tgh lice''.ed Colorado outfitter Gary Hubbell, who offers flyfshing and hunting g.id. services in the western United States. \IATEWSEIIER The parcel has adequate agdoltuml water tightt. I7e have applied forthree well permits and have submitted a water augmentation plan to the Colorado River Vater Conservanry District. The soils will be tested by HP Geotech and a suiteble septic4each field sewage disposal system will be engineered for each horse on the site. No centrel waterAewer system exists in the area TRANSPORTATION: This development will create rninimal additional impact on the roads in this area. No excessive road ctrts are necessary to build access roads. Runoffwill not increase by excess pavhg. In fact, with additional plantinp and fencing, nrnoffshould be funherstabilized as a result of this development. REI,{TIONSHIP TO COMPREHENSM PLAN (p.2) EIilTIRONMENI: There are oo severe or even moderate envirott-ental constraints to fre site, with the posible exception of slow-perc sofu, for which leach fields will be nFneered. There is liale potential erosion damage-in fact, erosion will be slowed as a result of this development through our strearn stabilization projea. Vegetation and wildlife habitat will not only be protected it will be erhanced by extensive planting of native qpecies. There will be no "taior water or air degradation as a result of this developmeot. No building will occur within the lOGyear floodplain. Iow-glare ligh.r will be installed, if roy. Constant illumination of propeny at "ight it not planned- COMMUNITY SERYICES: Impact upotr community services will be s-all. Fire prot€ction will be enhanced by the nearby pond as an available water source. CLINETOP RANCH SUBDIVISION March 25, 1998 Page 80 of 81 APPENDIX K STREAM BANK STABILIZATION PERMIT G:\98687\PRELIMINARY Pl-AN.doc J , FEPLY ?O alrExTtot{ oF DEPARTMENT OF THE ARMY U.S. ARMY ENG]NEER OISTRICT, SACRAMENTO COBPS OF ENGINEERS 1325 J STREET SACRAMENTO. CALIFORNIA 958I4.2922 December 10, 1997 Regulatory Branch (199775450) Mr. Gary and Mr. Ralph Hubbell 38 Stagecoach Circle Carbondale, Colorado 8L623 Dear Messrs. Hubbell: I am responding t,o your request for a Department of the Army permit to perform sLreambank stabilization along f1r9 sections of Main Elk Creek. A large spring runoff has resulted in numerous eroded banks, new channel bar orientations, and debris and snag piles throughout !,200 feet of your rj.verfront property. -Theproject site is located approximately eight miles north of New Caslte within Ehe NE L/4 NE f/4 of Section 35, Township 4 South, Range 91 West, Garfield County, Colorado. The Corps of Engineers, Sacramento District, has issued regional general permit numbers 37 and 45 to authorize certain limited discharges of dredged or fill material associated wit,h streambank and streambed stabilization and minor excavationprojects. Susan NaII of this office inspected the site with you on October 5, L997. Your proposed project involves a combination of bank resloping and stabilization with rock, cobble, and falIen trees; and bar excavations to j.ncrease channel capacity. Eroded streanibanks will also be revegetated wiEh native trees and shrubs. We have determined that, your project will not affect, threatened or endangered species protected by the Endangered Species Act. Based on our review of Ehe information submitt,ed, the project is authorized by these regional permits subject to t,he enclosed permit conditions and the following epeeial conditionE: 1. Provide notification to thie office at least 24 hours prC.or to proJect start-up. 2. Submit photographs of each completed work area al.ong with a eig:red compliance certification (copy enclosed) within 30 days after project completion. a -2- This authorization is valid until December L3, 2OOO. Wehave assigned number 199775450 to your project. please refer tothis number in any correspondence with Ehis office. rf your plant,o work requires a modif icat j-on or extends beyond December 13,2000, you must contact this office. We also understand thatadditional work, including improvements Eo an off-channel pond, may be phased in at a later date depending upon outcome of thisproposed work. If you have any questions concerning thesepermits and for notification purposes, please contact Ms. NaIl aE(970) 243-L199, extension 16. s ere1y, McNure hwestern Coloradoatory Office 402 Rood Avenue, Room 142 Grand .funct,ion, Colorado 8150L -2563 Enclosures Copies Furnished: Mr. Bill C1ark, Colorado Division of Wild1ife, 7LL IndependentAvenue, Grand ilunction, Colorado 81501Ms. Sarah Fowler, U.S. Environmental Protection Agency, BEpR-Ep, 999 18th Street, SuiEe 500, Denver, Colorado 80202-2466Mr. Paul von Guerard, Subdistrict Chief , U.S. Geological Su:nrey, 764 Horizon Drive, Suite ].'25, Grand .Iunction, Colorado 81506Mr. Mark Bean, Garfield CounLy, 109 8th Street, Suite 303, Glenwood Springs, Colorado 8150LDr. and Mrs. Dennis Ej-cher, 4824 County Road 243, New Castle,Colorado 8L647 Ms. Ann Inwood, 4500 County Road 243, New Castle, Colorado 81647 Ms. Lillian Reed, 4110 County Road 243, New CasEle, Colorado 8]-647Dr. and Mrs. Robert, Thorsen, 4412 County Road 243, New Castle,Colorado 8]-647 q CLINETOP RANCH SUBDIVISION March 25, 1998 Page 10 of81 APPENDIXA TITLE COMMITMENT G:\98687\PRELIMINARY P[-AN.doc ar-18-98 03:39p Hubbell-STATE FARM INS-970 945 2393 P -02 I t - lrrurri, American Land ['*i:,?:'fr$" I I I I I I t t 9l ttcoR TtrL€ lNsuRANc€ t 06 3057 04 000111 Policy of Title lnsurance SUBJECT TO THE EXCLUSIONS FROM COVERAGE, THE EXCEPTIONS CON. TA]NED IN SCHEDULE B AND THE PFOVISIONS OF THE CONDITIONS AND STIPULATIONS HEREOF, TICOR TITLE INSURANCE COMPANY, a Calilornia corporation, herein called the Company, insures, as ol Date of Policy shown in Schedule A, against loss or damage, not exceeding lhe amount ol insurance stated in Schedule A, and costs, attorneys' lees anrJ expenses which the Company may becoms obligated to pay hereunder, sustainsd or incurred by the lnsured by reason of: 1. Title to the estale or inlerest described in Schodule A belng vesled oth€rwisrr lhan as stated lherein; 2. any defect in or lien or encumbrance on such tille; 3. Lack of a right of access to and lrom the land: or 4. Unmarketability ol such litle. This policy shall not be valid or binding until counlersigned below by an authorized signatory ol the Company. I I I TICOR TITLE INSURANCE COMPANY lssuecl by: COLORADO WEST I.AND TITLE GUARANTEE CORP. 817 Colorado Avenue, Suite t 06 Glenwood SPrings, CO 81601 (303) 94s-o408 Pre;identBy SecretarY ' .;, $ignatory a)a.iil..i.rti./::a.',,. t':.' .' .t ' . "i! r.:"'i't tl Attesl 'i s| lis;r'.r,;-l.iiahilft'.ltiiltii/l.)i..i..fi(.i,6a. 1: r{,alGi,Gilt'", r- 18-98 03:39p Hubbe-l'l _STATE FARM INS' . t ,,l,:.'1i: .' t; i.. .t.-..! r .. € \!{ lsEli E 970 9zr5 239s P-03 I SCHEDULE A HUgOER tor|cY tlur.tBeR O^f F-OF AMOUNI OF IIT:iUTIANCE 05 3057 04 00011r L/':/95 3 195,000.00 Name ol lnsured: Ralph D. Hubbel} and Connic v- HubbeII Ths €stalo or inlerest in the land which is covered by this Policy is: Fee Sinple Titte to lhe estate or interest in the land is vested in: the Instrred The land herein described is encumbered by the lollowing mortgage or trust deed. and asstgnments: Deed of Tmst to Jinmie J. Rigoli and Betty E. Rigoli dated L/4/95 and recorded l/5/95 irr B@k 927 at Page 273 to the Pr:blic Trustee oE Carf ield County in tie anrount of 5601000.00 by R.D. llubbell and Dced of Tmst to lLlpine Bank datcd L/3/95 and recordcd L/5/95 in BcEk 927 at Page 285 to the Pttlclic Trustee of Ca.rfield Corxrty irt the alrounE of $351000.00 l>12 R.D. Hubbell- and the morlgages or trust deeds, if any, shorvn in Schedufe B hereol The land referred to in lhis Policy is d<.:scrrbed as f<rllows; See att:ched. G, 3148 IEOULE A r- 18-98 03:39P !-{ubbel I -STATE FARM INS -970 9zl 5 2393 A cracc of 1.rnd bolng:1 P'rLion o( tlomesE'eed EnEry Sur'r6y 116' 38, To.-.rr:hlp { gouth, Range 91 Si.:aE of the 6Eh P.l'l . belng more parElcularly describcd as g6lletrr: Eegirrning aE r polnE on r-he eresE }lne of said H.E.S- llo. 3A from vhencc Corner No, { ol eald.H.E.g. No. 38 bcars S. OS degrees 52'41" E. ls?0.2t f eoE,' chence N. 76 dcgrees 42' 08",E. r05s.o0 fcet, to t,he easc llne of said t{.E.8. }Io- 16,' Ehenee alorrg oaid ercE llne S. 15 degrces 5{'OO'E. l{1O.55 feeE; Ehence deparelng said e.tsE llne 3. 79 degrees of,'52" W. 532.02 feet Eo a polnt, on trhB ccnce'rlltro of Dl.l tn Elk Crcek; khcnce olong 6:rtd ccnt,orlll:e l{. 21 degrees 52"13 " E. 8{ ' 85 f eet,,' Ehence N. 19 dr:graca {?'43" E. g{.66 foeEl Ehenco N. 56 degrecs O7' 38' C. ?5.8{ tccc; Ehenee N. {l degrccs {O' -55i E. 73.10 fecEi chanca N. I degrec,s 2{' 32' }I 96 . 83 f ecr; Bhence N. 18 degreea JO'09" tt. 106.40 foet,; Ehcnco t{. 2l degrees 10'50' H. r22.62 teetl Lhonce N. 22 degreaa 32'3{n d- 20.03 feet; thence dleporEtng oald senE,erl 1ns S. 79 degtees 03r57't l{. 77t.06 fcec E,o a PolnE ort EhG Wese line of oald l{.E-S. No. l8; chenee alonE aald HeaE linc U. 2 degrees O0'oOtr E. 22?.38 feeE t.o Cotrner No. 5 of lald lt-E.s- No- 3Br Ehence along eal.d FeaE, ltne El- 21 degrces 11'00" 1{. 651'1{ fe6c to lhe Polne of Beginnlng. COIJ}IIA OF GAAFTELD 6AATE OF COLOR,ADO P-ozt _I" I r- 18-98 03: ztOP Hubbel'l -STATE FARM INS -' \= tll 'l! E !r-'r: SCHEOULE B HubbclI Clr11at.l 970 945 2393 P-05 I Jrb)lvraxrti6Yx tr r"^ Spcclal Erccptlonr: The mortgage, lI any, rclerred to ln ltonr 4 of Schedrtle A. G- Resonrations and ecceptions in United States Patent jn e@I< 2 at Page 267' 7. Easement and right of uay for clinetoP Ditdt as strotrn on MaP No' 7515' 8. Easerrent and right. of way for ditctr i-n Brck 86 at Page 319. 9. Easerrent and right of vray for @r.:nty noad il Bmk 117 at Page 479 and subject to the actual location on the gror:nd. 10. Te:=ns and conditions of counEy Resolution in Bcok 880 at Page 951. 11. Right of raay and casenent for Main Elk Creek and n:bject to any change in *ri tocatioir of tkre creek and t1re legal description- 12. Easenrents, felrces, rights of r"ray and notes on PIat No' 454608' 13- Terms and con<litions of Vacation of C-or:nty Road in B@k 854 at Page 471' 14. Any r.rrpaid tilYcs or assessrrents. Countersi EXCEPTIONS FROM COVERAGE is policy doas not Insura against loss or damags (and the company wlll nol 9ay costs, anorneyE' leel or erpenses) whlch arlsc reason ol: cral ErcePtlone: (1) Rlghrt or ctalms ol panles ln possession not shown by the publlc records. lzl Encroachmenls. overlaps. boundary line dispures. or other mattsrs which would be dlsctosed by an accurate survoy and lnsPectlon ol the Premlses. (3) Easomenls, Or claims ol easements. not shown by the public records. (4) Any lien. or flghl to a llen, lor servlces, labor, or materlal herotolore or horoafter furnlshed. imposed by law and not shown by lho Ptrblic records. (5) fareE or speclal esgessments whlch are not shown as erlsting llens by the publlc recordg' I t t I I I I I I I I I iciIEDUI.E R Scrr :ctule O ot lhls Pollcyldgl(flfl X nfi X :g]ts[.;,l- l"SOIL SURVEY TABLE q..-ACREAGE AND PROPORTIONATE EXTENT OF THE SOILS t,ta p i SolI name I I t t t 1 2 3 q 5 6 7I 9l0 11 12 13 14 15 16 17 18 '19 20 21 zz 23 24 i iAlmy Variant ).oam, 25 Lo 65 p€rcen! slopes----- iArl.e-Ansarl-Rock outcrop complex, 12 to 65 percent slopeslArvada 1oam, 1 to 6 percent sl.opes--- lArvada loam, 6 to 20 percent slopes--lAscalon fine sandy 10am,1 to 6 percent slopes-lAscalon flne sandy-J.oam, 6 to l2 percen! sJ.opes lAscalon-Pena complex, 6 to 25 percent slopes---lAtencio-Azeltlne complex, 1 to I percent ilopes I Badland--- iBegay sandy Ioam, 1 to 6 percent slopes-------- iBegay sandy loam,6 to 12 percent slopes------- lBucklon-Inchau loams, 25 to 50 percent slopes--iChilton channery loarn, 3 to 6 percent slopes---lChllton channery 1oam, 6 to 12 percent slopes--fChllton channery loam, 12 Eo 25 percent slopes- lCimarron loam, 2 to 12 percent slopes-- lCochetopa ).oam, t to 50 percent slopes-- lCochetopa-Jerry complex, 12 to 25 plrcent slopelCochetopa-Jerry coqplex, 25 to 50 percent slope s----------- 3----------- Cushman-Lazear stony loans, l5 to 65 perc Dateman gravelly loan, J0 to 50 percent sDetra fine sandy loan, 12 to 25 perceni sDoIIard-Rock outcrop, shale, conplex, 25slopes----- ent slopes-lopes------ Iopes------ to 65 percent rii 28 29 ri: 33 34 rli 38 39 1: 43 44ti 48 rii 53 rii 58 ft! 63 lti 68 T I I Etoe 1oam, 15 to 50 percent slopes----- Farlow-Rock outcrop association, steep----Halaquepts, nearly level------Heldt clay loam, 1 to J percent slopes---Heldt clay loam, 3 to 6 percent slopes---Heldt clay 1oam, 6 to l2 percent slopes--Heldt clay loam, 12 to 25 percent slopes--Holderness Varlant clay loam, 6 to 25 percent slopes-------Ildefonso stony 1oam, 6 to 25 percent slopes---------------Ildefonso stony Ioam, 25 to tl5 percent slopes-----Il.defonso-Lazear conplex, 6 to 65 percent slopes-----Irlgul channery 1oam, 9 to 50 percent slopes--Irigul channery loam, 50 to 75 percen! slopes--Irigul-Starman channery loamsr 5 to 50 percent slopes------Jerry loan, 12 to 50 percent slopes----- Kim Ioan, 3 to 6 percent slopes----- Kim loam, 6 to 12 percent slopes----- Lamphier loam, 15 to 50 percent slopes----- Limon silty clay loan, 3 to 12 percent slopes-----HorvaI ),oam, J to 12 percent slopes--ttorval-Tridell complex, 6 to 25 percen! slopes-----Nihi1l channery Ioam, 1 to 6 percent slopes---llihlll channery loam, 6 to 25 percent sLopes--Northwater 1oam, 15 to 65 percent slopes----- 01ney loam, 1 to I percent slopes----- OJ.ney 1oan, 3 to 6 pepcent slopes----- 01ney 1oam, 6 to 12 percent slopes-----Parachute loam, 25 to 65 percent slopes--Parachute-Rhone 1oams, 5 to l0 percent slopes-----Potts loam, 1 to 3 percent slopes-----Potts 1oam, 3 to 6 percent s).opes-----Potts loam, 6 to 12 percent slopes----,Potts-Ildefonso complex, 3 to l2 percent slopes-----Potts-ILdefonso complex, 12 to 25 percent slopes-----Potts-Ildefonso complex, 25 to 45 percent slopes----- Rhone 1oam, 5 to 30 percent slopes----- Rhone Ioam, 30 to 70 percent slopes----- Rock outcrop-TorrlorthenLs complex, very steep------Silas loam, 3 to 12 percent slopes----- Tanna silty clay Ioam,25 to 45 percent slopes-----Torrifl.uvents, nearly IeveI------Torriorthents-Camborthids-Rock outcrop complex, steep------Torriorthents-Rock outcrop complex, sEeep---- Val.e silt loam, I to 6 percent slopes--- See footnote aL end of table. 200 950 0 I Garfleld Coun t res ,000 ,200 ,000 '300,200 ,8oo '300,7oo 2 0 0 5 1 2 6 1 9 500 600 900 25,150 90a ?00 600 1,600 1 6 ,600 1,20Q 1 4 ,7oo 300 22,000 9 ,600 3 ,900 7 ,ll oo ,300 ,600 ,000 900 ,000 ,7 00 ,'1 60 , 100 ,000 , 150 ' 700 ,8oo ,800 ,7 00 ,700 , 100 ,200 ,800 600 , 100 ,200 ,500 ,300 , 100 800 ,600 ' 300 ,7 00 , 100 ' 900 ,8o o 6 7 2 2 3 2 2 2 10 6 'l 4 2 4 28 2 1 21 2 15 2 6 16 2 5 8 B8''I 'r5 15 3 7 2 7 5 25 2 3 7 51 66 4 150 800 300 750 800 300 700 800 700 600 600 850 000 Mes a n cr 0 0 0 0 0 0 0 0 0 0 0 2,35Q 0 0 0 0 500 0 0 0 o 0 0 0 0 0 0 0 0 0 0 0 500 850 0 0 0 0 0 0 0 0 0 0 0 200 0 0 0 0 0 0 0 0 200 550 0 100 50 0 0 0 0 0 0 a rea res 900 2 ,000 2 ,000 1 0 ,200 10,000 5 ,300 1,200 2 ,8oo 6 ,3001,700 9,500 600 9oo 27 '50o900 700 600 1,600 17,100 1,200 14,700 300 22 ,000 9 ,600 3 ,900 3 2 2 2 11 6 lll 2 4 28 2 1 21 5 ,300 8 ,7oo 38,100 1,900 1 6 ,000 15,700 3 ,8007,400 2 ,800 7 ,800 5 ,300 7,400 6 ,300 7 ,6oo 2 ,000 2 ,800 3,700 7 ,600 51,800 67 ,7 00 ll ,000 ,7 00 , 160 ,100 ,500 ,000 ,700 ,800 ,8oo ,7 00 ,700 ,100 ,200 ,800 600 2, 100 1 5 ,2oo2,Too 6 ,300 16 , 100 800 2 ,600 25 ,7 Oo 3.51.5 0.6 0.3 1.6 1.6 0.8 0.2 0.5 'I .0 0.3 1.5 0.1 0.'lq.q 0.1 0.1 0.1 0.3 2.7 o.2 2.3 I 1.2 1.0 1.2 0.3 0.1 0.3 0.6 0.3 0.3 0.4 1.7 1.1 2.4 0.5 0.8 4.6 0.3 0.2 3.5 0.1 0.3 2.4 0.4 1.0 2.6 0.1 0.4 0.8 1.4 6.1 0.3 2.5 2.5 0.6 1.2 0.4 1.2 0.8q.1 0.5 0.6 1.2 8.3 10 .8 0.6 t I 94 SOIL SURVEY TABLE 5...YIELDS PER ACRE OF CROPS AND PASTURE Ylelds ln the N columns are for nonirrlgated solls; those 1n the I columns are for lrrlgated solls. Ile1ds are those that can be expected under a hlgh Level of management. Absence of a yleld tndlcates that, the sollls not sulled to the crop or lhe crop generally ls not Sroun on the solll Soll name and map symbol Almy Variant Ansarl-Rock outcrop l,Arvada l'Ascalon l Ascalon-Pena l,Atencto-AzeI t ine r. Badland Arvada 0- Begay Begay 12--------- Bucklon- Inchau 3,14,15------Chllton I' I I 6 I I t I I I I ClEarron 17 ------ Cochetopa 't 8 , 19----- Cocheto pa-J er r y 20t . Cryaquoll s 21--------- Cushman-Lazear 22--------- D a terlan 24--------- Dollard-Rock outcrop See footnote at end of table u 19 7 8 5 Whe at 40 55 ll5 55 60 50 Bar I ey 30 25 20 0ats u I I I I I I I I I I I I I I I I I I I I I I rl0 i II I I 30i II II I II I I I I I II II I I II 40i II II 30i tI II I I I I I I II II I I I It I I I II I II II I I II I I II I I I I I I I I II I I I I I I I I I I I I I I I I I 80i I I I I I II II 100 i II II 80i II II I II II 801 II It I I II II 75i I I II 60! I I II I II I I I II I I I II II II I I I I I II I I I I II I II II I I I I I I 60 80 60 65 80 65 AIfaIfa hay I Corn sllage 3 0 I I I I I I I I I I I I I I I I I I I I I I I I I I I I It I II Il I II II II IItI I II II It II I II II I II II I It II I II I I I II II II II I I II II I II II I I I II I I I II 0 4.0 3 25 03 4.0 2.5 I 96 SOIL SURVEY TABLE 5.--YIELDS PER ACRE 0F CROPS AND PASTURE--Contlnued So11 name and map symbol - l{heat I Barley I oats i Alfalfa hay I Corn stlage Iur--- 0lney ]0).ney te 56----'-"-I Potts |I.rr, ,r--- Potts-I ldefonso 3---------- P ar achute-Rhone otts- Ildefonso Rhone t' I I 59 P l, l'ii:[i:Lcrop-rthents I, Silas I I I I I I I 4 Tanna 65r . Torr lfluvents 66--------- Torr iorthents- Camborthlds-Rock outcrop 67 ------ Tor r io r then t s- Rob k outcrop 69, 70----- VaIe 7 1 ---------ViIIa Grove-ZoILay Bu 25 20 I 25 20 Bu 55 Ir5 35 55 45 40 55 q5 Bu q0 30 25 q0 30 Bu 85 80 60 80 60 55 80 60 TonI I I 100 i I I I I 90i II I I 80i I I II I I I I I I I I II 100 I ! I I I 70i II II 65i II I I I II I I I I II I II II I II I I II II I I I II II I I I I II II II I I II I I I I I I I I I I I I I I I I I I I I II I 40i II tI 301 It II 25i II t I I I I I I I II II I I I tI I I I II t II II II I I I II I I I II 1I I I II Bu Bu 30 2.0 5 100 70 70 35 Ton q.5 q.0 3.5 5.0 0 3.5 q 5.0 q.0 3.5 TonTon 25 20 15 25 I I I I I I II I I I I I I It r See descripblon of the map unit for composltlon and behavior characterlstlcs of the map unli. RIFLE ABEA, COLORADO TABLE 6..-RANGELAND PRODUCTIVITY AIID CHARACTERISTIC PLAIIT COMMUNITIES [0nJ'y bhe solls that support rangeland vegetatton sultable for grazj.ng are llsged] 97 Soil name and map symbol Range slte name Characteristlc vegetatton I I Compo- I sitlon I I 1------ - -- - Almy Variant Ansari----- Rock outcrop. 3 4 Arvada Arvada , A 6--------------- sc alon 5 Tr.Ascalon---- See footnote at end of table Brushy Loam------- Loamy Slopes---------- Loaroy Breaks---------- Salt Flats- Alkallne Slopes----- Deep Loam-- Deep Loam-- Favorable Normal Unfavorable Favorabl e lormal Un favorable Favorable l{ormaI Un favorable Favorable Hornal Unfavorabl e Favorable llornal Unfavorable Favorable No rna I Unfavorable Favorable NormaI Unfavorable f reac 000 000 500 900 650 500 5 7 8 5 7 wei. 3 2 1 1,200 900 500 850 ?oo 500 700 500 400 00 00 00 00 00 00 Mountaln brome----- Gambel oak---------Elk sedge-- Slender wheatgrass- Western rrheatgrass- l{ounta!n snowberry- Noddlng bromegrass- Utah servlceberry-- Aspen peavlne------ B1g sagebrush------ Hountain snowberry- Saskatoon servlcebe ?ry-------- l{estern Hheatgrass-Indian rlcegrass-- Bluebunch wheatgrass- Gambel oak-------- tleedleandthread------- Utah servtceberry----- True mountalnmahogany-Blg sagebrush--------- Indlan rlcegrass--'{estern irheatgrass-Pinyon----- Juni per---- Blg sagebrush--------- Utah servl.ceberry----- ileed 1e and thpssd ------- l{estern Hheatgrass-Alkall sacaton---- Inl,and saltgrass-- l{1n ter f at-- Bottlebrush squlrreltall------ Gardner saltbush--- Greasewood- Blg sagebrush--------- Greasewood- GaI1 eta---- Shadscale-- Bottl.ebrush squlrreJ.talI------l{estern wheatgrass- Needleandthread------- l{estern wheatgrass- Bluebunch uheaEgrass-Big sa8ebrush--------- Utah servlceberry----- Needleandbhread------- Western rrheaLgrass- Bluebunch wheatgrass-Big sagebrush--------- Utah servlceberry.----- c 20 20 10 5 5 5 5 5 5 5 5 5 20 15 r5 10I 7 7 5 20 15 15 5 5 5 5 10 10 l0 5 5 5 5 20 20 10 10 5 5 20 t5 10 10 5 20 15 10 l0 5 98 SOIL SURVEY TABLE 6...RAIIGELAND PRODUCTIVITY AND CHARACTERISTIC PLANT COMMUilITIES-.CONTiNUCd So11 name and map symbol Range slte name o ta.[Characterlsilc veBetation nIOts Compo' Klnd of year I Dry 7rzPena------- 8r:Aiencio---' Azeltine--- 10, 1 1----- Begay 12r: Bucklon---- I nchau --- -- 13, Irl ,15---------Chllton 16--------- C lmar ro n see footnote at end of table. Loamy Slopes---------- Rolling Loan------- Rolling Loam------- RolIlng Loam------- Brushy Loam------- RoIIinB Loam------- Mountain Loam------- Bru Favorabl e Normal Un favorabl e Favor able NornaI Unfavorabl e Favorable N ornal. Unfavorable Favor able Normal Unfavorabl e Favorable I'lorroa I Unfavorabl e Favor able NormaI U n favorabl e Favor ab1 e NormaI Unfavorable Favorable Normal Unfavorable wel ht 1,200 900 500 1,000 800 500 1,000 800 600 1,000 800 500 True mountalnmahoganY- Big, sagebrush--------- Utah servlceberry----- Bluebunch wheatgrass- Western wheatgrass- Indlan rtcegrass-- Bo!tlebrush squirreltall------ Pralrle Junegrass--Bottlebrush squirre).ta1I------ Rabbllbrush Western wheatgrass- N eedl e and thre ad -------Bl8 sagebrush---------lndlan rlcegrass--Pralrie Junegrass--Bottlebrush squlrreltall------ Rabbltbrush 15 10 10 10 10't0 5 Western Hheatgrass- Need leand thread ------- i20I 15 B1s Ind lan ricegrass--------------sagebrush-- ----i 15I toi5 Bluebunch wheatgrass-----""' i !{estern wheatgrass------------ i NeedI eandthread------- --"-"- i 5 5 20 15 15 10 5 5 5 15 15 t0 3,ooo 2 ,000 1 r500 3,oo0 2 ,0001,500 1,000 800 500 1,50o 1,300.l,000 lBlg sagebrush-'---------------i 10 lsand dropseed----------"----'i 5 ! Indlan rlcegrass-- -------""-i 5 lRubber rabbltbrush------"'---i 5 ! Pralrle Junegrass-- --------'--i 5 l Huttongris 3----------"--"'-- i 5 rtiri! lGambel oak-------------"----'i 20 lElk sedge- ---------i 10 lMountaln brome----------------i 10 lUtah servlceberry-------------i 10 ll{estern wheatgrass------""'-i 5 l slender wheatgrass- ---'--'-"'i 5 lComnon snowbeiry------'---"--i 5 ttir lGarabel oak-----------"-""'-i 20 lElk sedge- ---------i to iMountaln brome----------------i 10 lUtah serviceberry---------'---l 10 lWestern wheatgrass----------'-i 5 fSLender wheatgrass--------"'-i 5 f Common snowberry-- ----"---"-i 5 ii lBluebunch wheatgrass-----"---i 25 ll{estern wheatgrass-----'------i 15 ! Needleanctthread---------------l 10 I Sandberg bluegrass------------ i t 0 llndlan ilcegriss--------------i to ! Blg sagebrush----------------- i t o iLow rauUttbrush---------------i 5 ttarlldaho fescue----- --i 25 lBearded Hheatgrass----'-----"i 15 it{estern wheaigrass------------i 10 I Mountaln brome---------------- i 1 0 lB18 sagebrush-----------------l 10 iHuitongrass-------------------i 10 !SIender Hheaigrass-----"-'---i 5 f ileedlegrass-----------------"i 5 i Noddlng bromegrass- -----------i 5 ttir RIFLE AREA, COLOHADO 103 TAELE 7...BUILDING SITE DEVELOPMEilT ISome terms that descrlbe-restrlctlve so11 features are defrned 1n the G]ossary. see tex! for deflnltlons ofrsllght,r,moderate,rtand "seveiel', lusen"L-Jr-;;;;l.y lndlcates ir,"i-ii," soll was not ratedl Soil name and map symbol Shallow excava!lons DveIIlngs w1 thout basements DweIIlngs wl th b asements Smal1 commerc I aI al. roads streets Loc and 1 ------- --- Almy Varlant A ns ar 1----- Rock oulcrop. ar. Ascalon---- 8r:Atenclo---- AzeItlne--- 9r. Badland tl Begay l2r: Bucklon---- See footnote at end of table Severe: slope. Severe: slope,large slones. Severe: s lope ,depth to rock Hoderate:too clayey. Moderate: slope,too clayey. S1 lghc----- Hoderate: s lope. Moderate: slope. Severe: s1ope,Iarge stones. Severe: cutbanks cave. Severe: cutbanks cave,Iarge stones. Hoderate: large stones Moderate: sIope, large sLones Severe: depLh to rock,slope. Severe: s1ope. Severe: slope,large stones. Severe: s lope ,depth to rock Severe: shrlnk-swe11. Severe: shrink-swe1I. Hoderate: Iow strength Hodera!e: slope, low strength. Hoderate: slope, 1ow strength. Severe: slope,Iarge stones. Sl lght----- Moderate: Large stones. Sl tght----- Hoderate: sIope. Severe: depth to rock,sIope. Severe: s1ope. Severe: s1ope,large stones Severe: slope, depih to rock. Severe: shrlnk-swe11 Severe: shrlnk-swe11. Hoderate: Iow strength Moderate: s1ope, low strength. Moderate: sIope, J.ow strength Severe: slope, large stones. S1 i gh b----- Hoderate:large stones. ModeraLe: Iarge stones. Moderate: slope, large stones Severe:depth to rock, sIope. build n Severe: slope. Severe: slope,large stones. Severe: slope, depth to rock. Severe: shrlnk-sweIl Severe: slope, shrink-swe11. Hoderate: Iow strength. Severe: slope. Severe: slope. Severe: slope,large stones. S11 eht----- Hoderate:large stones. Sllght----- Severe: sIope. Severe: depth to rock,sIope. Severe: slope,lolr strength. Sever e: s1ope,large stones Severe: slope, depth to rock. Severe:shrlnk-sreII, Iow sLrength. Severe: shrlnk-swel1. low sLrength. Moderate:frost action, 1ow sr,rength. Moderate: s1ope,frost actlon,low strength. Moderate: sJ.ope,frost actlon,Iow strength. Severe: s1ope,large stones. Hoderate:large stones. 511sht. Moderate s Iope . SI tIBh Severe: depth to rock, s lope ,Iow sgpg6gg6. RIFLE AREA, COLORADO 107 TABLE 7.--BUILDING SITE DEVEL0PHEHT--Continued nd3o11 name 6ap lynbo fr I lde fonso-- ,; ,, Rhone l"-ouicrop. Torrlorthents.I las l.,' 65r . Torr t fluv en bs f,.lorlhents. Canborthlds. l"* 67 r: Torrtorthents. l"* VaIe '1," lla Grove------ 59) z t s------------ outcrop. outcrop. a 1 e 7l r: vtt Z oI tay---- - t ShaI loH excavatlons Severe: slope. Severe: s1ope, Iarge siones. Severe: sIope. Moderate: floods. Severe: slope. Sll sht----- Hode r a te sIope. Severe: s).ope. Severe: slope. Severe: s).ope. DuelIlngs wlthout ba Severe: sIope. Severe: s1ope,large sbones. Severe: s1,ope. Severe: fLoods. Severe: slope. S11ght,----- Moderate: slope. Severe slope. Severe: sIope. slope, shrtnk-sweI1. Severe: Drel l,l ngs wlt h basements Severe: s1ope. Severe: sIope,large stones. Severe: slope. Severe: floods Severe: slope. SI leht----- Hoderate: slope. Severe: slope. Severe: slope. Severe: s1ope, shrlnk-sweI1. Smal I commerc laI bulldl Severe sIope. Severe: slope,large stones. Severe: s lope . Severe: floods. Severe: sIope. Hoderate: sIope. Severe: sIope. Severe: slope. Severe: slope. Severe: s1ope, shr lnk-swel I Local roads and streets Severe: slope. Severe: slope, Iarge stones. Severe: slope. Severe: floods. Severe: slope, low strength. Moderate: IoH strenglh. Moderate: slope, loH strengbh. Severe: slope. Severe: slope, low strength. Severe: slope, Iow strengt,h, shrlnk-swel1. Severe: wetness. Severe:floods.Severe:floods, rretness. Severe:floods Severe: floods,frost actlon 'See descrlpblon of Lhe map unlt, for compositlon and behavlor characterlsLlcs of the oap unlt. 108 SOIL SURVEY TABLE 8.-.SANITANY FACILITIES ISore lerms that descrlbe restrlctlve so11 features are deflned 1n the Glossary. See text for deflnltlons ofnsllghtrr-rrmoderatertt ngoodrr nfalrrtr and other terns. Absence of an ent,iy indlcates that iire sol,I rrasnot ratedl SolI name and map symbol Sept abso 1c tank rpgion elds Sewage lagoon areas Trench s an 1t,ar ylandflI1 Areaganitar DalIy coverfor IandflII 1 ----------Aloy Vartant 2rzArIe------' Ans ar 1 ---- - Rock outcrop. Tt z Ascalon---- 8r:Atenclo---- Azeltlne--- gr. Badland Begay 12. : Buck Ion---- See footnote at end of iable. Severe: slope,percs sIor,lly. Severe: slope, depth to rock. Severe: 3lope, depth to rock. Severe:percs s1orIy. Severe:percs slouly. SIlght--'-- Moder ate: s1ope. Hoderate:slope. Severe: slope,large stones. Sl t Bht----- Severe 3Iarge stones. Moderaie:Iarge stones Moderate: slope,Iarge stones Severe: depth to rock,slope,percs sIorIy. Severe: slope. Severe: s lope ,large stones Severe: slope, depth to rock. Hoderate: sIope. Severe: s1ope. Severe: seepage. Severe: slope, 3eepa8e. Severe: slope, seepaSe. Severe: slope,large stones. Severe: seepaSe. Severe: seepaSe,Iar8e stones I Severe:I seepage. I I I Severe:I slope, I seepage. I Severe: I depttr to rock,i slope. I I II Severe: s1ope. Severe: sIope, depth to rock. Severe: slope, depth to rock Hoderate:too clayey. Moderate:too clayey. Severe: seepaSe. Severe: seePage. Severe: seepaSe. Severe:large stones. Severe: seepage. Severe: seePage large s ,tones. Severe: seepaSe. Severe: seepaSe Severe: depth to rock, slope. t1 vI Severe: s lope . Severe: s 10pe. Severe: slope. Sl tght----- Hoderate: slope. Severe: seepaSe Severe: seepaSe Severe: seepaSe Severe: slope. S1 lBht----- Severe: seepage. Severe: seepage. Severe: seepaSe. Severe: sIope. Poor slope. Poor: slope,large stones, area reclalm. Poor: slope,thln layerarea recla , 1n Good. Falr:too cJ.ayey. Falr: sl,ope,too elayey. Falr: s1ope. Falr: s lope Poor: slope,large stones. Severe: Iarge stones. Poor: 3eepa8e, Iarge stones. Fair:large stones. Fal.r: slope,large stones Poor:thtn layer, slope, area reclaln. 112 SOIL SURVEY TABLE 8.--SAl{ITARI FACILITIES--Conttnued Sol.I name and nap synbol Senage lagoon Trench sanltar DalIy cover I I t I I I I I I I I I I I I I I I I 54, 55----- Poit s 57r zPotts-'---- I Idefonso-- 58r:Poits------ I Idefonso-- 5gr:Potts------ I lde fon so-- 62r z Rock outcrop. Torrlorthents. 65r. Torr I fIu vents 66r: TorrlorLhents. Camborthids. Rock outcrop. 67r:Torrlorthents. Rock oulcrop. See footnote at end of table. Septlc tank absorptlonflelds Hoderate:percs slowly. Moderate:slope,percs s1ow1y. Moderabe:percs slowly. Severe: sIope,large gtones. Severe: s1ope. Severe: sIope,Iarge stones Severe: slope. Severe: s1ope,large stones. Severe: depth to rock, sIope. Severe:depth to rock' slope. Severe:floods. Severe: depth to rockt percs slonlY, sIope. areas Moderate: s1ope, seepage. Severe: s1ope. Severe: slope. Severe: slope, seepage. Severe: sIope. Severe: slope, seePage. Severe: s1ope. Severe: slope, seepaSe. Severe: slope. Severe: fLoods Severe: depth to rock, sIope. Severe: s1ope. Ia S1 I ght----- SI I ght----- SI lght----- Severe:Iarge sbones. Moderate: sIope. I Severe:large stones, seepaSe. Severe: s1ope. Severe: s lope ,large stones, S€€Paf,€.:. Severe: depth to rock. Severe: slope, depih to rock. Severe: floods. Severe: depth to rock, slope. Area sanltarylandflIl SIlght----- Moderate: s1ope. S11s,ht----- Moderate: slope. Severe: slope. Severe: s1ope, seepage. Severe: s1ope. Severe: slope, seepage. Severe: slope. Severe: sIope. Severe:floods. Severe: s1ope. ood for landflll Falr: sIope. Poorlarge stones. Poor: slope. Poor: slope,Iarge stones Poor: slope. oor: slope,large stones. Poor: slope. Poor: sIope. Poor: sIope,thln layer, area recIalro. Good Good 1't4 TABLE 9.-.CONSTRUCTIOil HATERIALS ISone terms that descrtbe restrlctlve solI features are deflned tn the Glossary. S 'rgoodrn nfalrrn and npoor.rr Absence of an entry lndicates that the so11 was n ""ot SOIL SURVEY text for deflnltlons of rated l Soi,I name and map symbol Road fl I 1 Sand G r avel Topsoll 1 ---------- AImy Varlant 2r: Ansarl----- Rock outcrop. 3, 4------- Ar vad a 7r z Ascalon---- 8r: Atenc 1o---- AzeIti ne--- gI. Badland 1 1--------- Begay 12r z Bucklon---- See footnote at end of table Poor: slope, Iow strength Poor: slope,!hln 1ayer, area reclalm. Poor: slope,thln 1ayer,area reclalm. Poor: shrlnk-sweIl,Ior strength. Poor:lox strengLh. Poor:Io!, strength. Poor 1ou strength. Poor:large stones. Fair:large stones. Falr:Iarge stones. Falr:large stones. Poor:thln 1ayer, slope, area reclalm. Unsulted--- Unsulted:thin 1ayer. Unsuited--- Unsulted: excess fines Poor: excess fines. Poor: excesa flnes. Poor: excess flnes Unsulted--- Poor: Iarge stones. Poor:Iarge stones Poor: excess fines,large siones. Poor: excess flnes. Unsul ted--- UnsuL ted--- Unsuited:thln 1ayer, Unsui ted--- Unsulted: excess flnes. Unsulted--- Unsulted--- Unsul ted--- Unsul ted--- Poor:large stones. Poor:.Iarge stones. unsui ted--- Unsu1ted--- Unsutted--- Poor: slope Poor: sl.ope, l arg,e stones. Poor: s1ope,Iarge stones,area reclaln. Poor:too clayey, excess sodlun. alr:too clayey. FaIr: slope,too clayey. Falr: slope F too c Poor: s1ope,Iarge stones. Fatr:small stones. Poor: smaI1 stones. Falr: sIope. Poor: sIope, area reclalm,thln layer. ,layey. Good 118 SOIL SURVEY TABLE 9.--COl{STRUCTI0II HATERIALS--Contlnued RoadflIl Sand Gr avel TopsotlSo11 name and map symbol 54, 55----- Potts 57rz Ildefonso-- 58r:Potis------ Ildefonso-- 5gr: IIde fonso-- 62t t Rock outcrop. Torrlorthents. 63----- S11as 65r . TorrLfluvents 66r:Torrlorthents. Canborlhlds. Rock outcrop. 67rt Tor r 1 or then ts Rock outcrop. I See footnote at end of table. F a1 Fair: low strength. r: Iow strength. alr: Iow strength. Poor:Iarge stones. Falr: s lopelow s ,trength. Poor:large stones. Poor: slope. Poor: slope,large stongs. Falr: slope,thln layer,lou strength. Poor: slope Falr: low strength. Poor: sIope, IoH strength,thin layer. F Unsuited--- Unsuited--- Unsutted--- Unsul ted--- Unsul ted--- Unsulted--- Un sulted--- Unsut ted--- unsui ted--- Unsulted--- Unsulted--- Un su i ted--- Unsulted--- | Falr:I small stones. i Unsutbed--- ---------- I Falr :I slope,i smaII stones. i iUnsulted--- i Falr:I small stones. iUnsulted--- I Poor: I Iarge stones. t I tI Unsuited--- Unsulted---slope, Iarge stones. Unsul slope. Unsulted--- - ; - - --- - --slope, Iarge stones. sIope. Poor: slope. Unsul ted---Poor: slope,goo clayey. Poor: slope Poor: i Poor: Poor: Unsulted--- | Poor: It tI i i Unsulted--- ---- ------ i I 3 II III a I I II IIUnsulted------------- i Good II 120 SOIL SURVEY TABLE I O.'-WATER HAIIAGEHEI{T ISone terms that descrlbe restrlctlve sotl features are deflned 1n the Glossary. Absence of an entry lndtcates that the soll was not evaluatedl So11 name and map symbol Pond reservolr Embankments,dl,kes, and Ievees Dralnage Irrlgablon Terraces and dlverslons Grassed wate rw a ys AImy Vartant 2rzArIe------- Ansarl----- Rock oulcrop 6- Ascalon 7rzAscalon---- 8r:Atencio---- Azeltlne--- gr. BadI and l1 Begay 12r tBucklon---- I nchau -- -- - 1 3------ Chl I ton a as Slope-------'-- Slope, seepaSe, depth to rock. Slope, depth to rock. Favorable-----' SIope---------- Seepage, s1ope. Seepage, slope. Seepage, sIope. SIope,large stones. Seepage, slope. S1ope, seepage Slope, seepage. Slope, seepaSe. Depth to rock, s lope . Slope,depth to rock, seepaSe. Seepage, s1ope. Favorable------ ip1ng,thln 1ayer,large stones Thln Iayer----- Excess sodlum-- I Excess sodluto-- Favorable------ Favorable------ Favorable------ Large stones--- Seepage, large stones. Seepage, large stones. Plplng, seepaSe. Piplng, seepaSe. Thln Iayer----- Thln Iayer----- I I iP II II I I I I I t I I I I I I I I I I II I I See footnoLe at end of iable. SeepaBe--------Slope----------Favor able------ Slope---------- SIope,depth to rock,large stones. SIope, depth to rock. Percs slow1 excess sod slope. Percs slowly, excess sodium, s1ope. Slope---------- Slope---------- SIope---------- SIope,large stones. S1ope,cuibanks cave, large stones. S1ope, larg,e stones. Slope---------- Slope---------- Deplh to rock, s1ope. v 1 SIo de P€,pth to ockr IISlope---------- i SIopeSlope---------- Large stones, slope, droughty. Droughty, pe tl.epf Large stones, slope, depth to rock. to ercs slowly--- Slope,percs sIow1y. Slope---------- Slope---------- SIope----'----- Slope,large stones. Large stones, sol1 blouing. II II I I Large sbones,I slope tI droughty. II I Slope,I rootlng depthI droughty. tI II I I i Percs sIor,ly 'I excess sodlum II tI I Slope,I percs slowlY,! excess sodlum II lS).ope. II II ! slope. I I I I S1ope,large stones, droughty. Droughty,large stones. I DroughtY 'I large stones. I I I I II I II I Favorable. II t I I S1ope. II II II I slope 'I rootlng dePth I I I SIope,I rootlng dePtI I I I i DroughtY. I II ck.ro Iope, d epth iS II I I II I I I I IP s1o roo h ,ngd Slope,percs slowly, excess sodlum. Slope,percs slowly, excess sodtun. Slope---------- Slope---------- Slope---------- Slope,large stones, droughty. Slope, droughty, so11 blowlng. S1ope, seepage, droughty. SIope---------- SIope---------- Rooting depth, slope. Slope, rootlng depth. DrouBhty, s Iope . Favorable------ Slope--------- S1ope, depth to rock. SIope, depth to rock. II IS pe1o Lar 8e 11 stones, blowl n g.30 RIFLE AREA, COLORADO 't23 TABLE 10.--'{ATER MANAcEMENT--Conttnued So11 name and map symbol Pondreservolr areas Embankments,dlkes, and levees Drainage Irrigatlon Terraces anddlverslons Grassed waterways 53, z Parachu!e-- 54, 55----- Pottg 57r: Potts --- --- Ildefonso-- 5gr, 59tlPotts------ I ldefonso-- Rhone 62r z Eock outcrop. Torrlorihents. 65r.Torrifluvents 66r: Torrlorthents. Camborthids. Rock outcrop. 67 r: Tor r lorthents. Rock outcrop. Depth to rock, slope, seepage . Slope,depth to rock. Seepage-------- Seepage-------- Seepage -------- Seepage, slope. Seepage-------- Seepage, 31ope. S1ope,depth t,o rock. Slope, seepaEe. S1ope, depth to rock. Seepage-------- Slope , seepage. Slope, seepage. See footnote at end of table. PipinB---------SIope----------Slope---------- I I I I I Depih to rock, i slope. I I I I I Slope ,i depth to rock. I I i Slope---------- I I I I I SIope---------- I I I I I I I Slope---------- I I II I S1ope,! Iarge stones. It II I I I Slope---------- It It I S1ope,I large stones. I I II I S1ope,! depth to rock. I I It II II I I I Thln Iayer----- Thln layer----- Plping--------- Plplng--------- Piplng--------- Large stones--- P i pl ng--------- Large stones--- Thin layer----- P i ping--------- Thtn layer----- Plping--------- Piping--------- Slope,percs slowly, depth to rock Favo rabl e------ Slope---------- SIope, floods. Slope, d rou roo t thtY,1ng depth. ) SIope,rootlng depth. Slope, erodes eas11y. lope, erodeg easlly. SIope, erodes easlly. Slope,Iarge stones, droughty. Slope, erodes easlIy. SIope,Iarge stones, d roughty . Slope, floods loS p roo e, tlng depth Slope, tpercs slowly,rootlng depuh Favorable------ Slope---------- P€rpth S1o de Depth to rock, sIope. SIope, depth to rock. Erodes easily-- S).ope, erodes easlly Erodes easily-- Large stones, slope. SIope, erodes eas11y. Large stones, i lope . to Favorable------ SIope, depth to rockpercs slowIy. Erodes easlly Erodes eas sIope. SIope, erodes easlly. ckro 1rv, SIope,rootlng depth,clroughty. S1ope,rootlng depth Erodes easlly. SIope, erodes easlIy Erodes eas11y. SIope,Iarge stones, droughty. Slope, erodes easlly. SIope, Iarge stones, droughty. Slope, rootlng depth Favorable. Slope, erodes easlly,roottng depth. Erodes easlly. SIope, erodes eas11y. S Iope terodes easily. RIFLE AREA, COLORADO 125 TABLE 11..-RECREATIONAL DEVELOPMENT ISome terms lhat descrl,be restrlcttve so11 features are defined 1n the Glossary. See text for deflnltlons ofnsllghl,t nmoderatern and "severe.tt Absence of an enLry lndlcates that the soll was not ratedl So11 name and map symbol Camp areas PI aygrounds Paths and trallsPlenlc areas 1---------- Almy Varlant Ansar i----- Rock outcrop. 7r:Ascalon---- 8r:Atencto---- .. Azeltlne--- gr. Badland 'l2r: Bucklon---- Inchau----- Severe: sIope. Severe: slope,large stones. Severe: slope, depth to rock. Moderate:pircs slowly. Moderate:percs slowly. SI 1 ght----- Moderate: slope. Moderate sIope. Severe: 3lope,large stones. S1lght----- Moderate:sEaII stones. SI I Bht----- Hoderate: slope. Severe: slope, depbh to rock Severe: sIope. See footnote a! end of table slope. Severe: s lope . Severe: slope,large stones. Severe: s1ope. S1 lght----- I Hodeiate: s lope . SI lght----- Moderate: s1ope. Moderate: slope. Severe: S1 tght----- Moderate: small stones. Sllght----- Moderate: slope. Severe: slope, depth to rock. Severe: slope. slope I I I Severe:I sIope. I I I I I Severe: I slope,I large stones. II II I Severe: I slope. I I I I I I II II i S11ght. II I a i S11ght. II II i S11eht. I I I I i S11sht. II II II I slight. II II i Moderate:I slope. I I II IIi51lsht. I I II II I Moderate:I small stones. II II Severe: s1ope. Severe: slope,large stones,small stones. Severe: slope, depth to rock,large stones. Hoderate:percs slowly. Severe: slope. Moderate sIope. Severe: slope. Severe: sIope. Severe: sIope, Large stones. Moderate: slope,snall stones. Severe: slope, small stones Moderate slope. Severe: slope. Severe: depth to rock, slope. Severe t8hSIt tght.SI Severe: sIope. I Severe:I s1ope. I RIFLE AREA, @LORADO 129 TABLE 1 1 .--RECREATIOIIAL DEVELOPII{ENT--Contlnued So11 name and Camp areas Plcnlc areis Playgrounds Paths gnd tralls map symbol Severe: slope. Severe: slope. Severe: floods. Severe: sIope. Moderate:dusty. Moderate: slope,dusty. Severe:slope. Severe: s1ope. Severe: s1ope. Severe: floods. Rhone 62t z Rock outcrop. Torr Lorthen bs. 63------ S 11as 6q------ -- - - - --- ?- -- - - Tanna 65r. Torr lfluvents 66r:Torrlorthents. Canborthlds. Rock outcrop. 6'lrz Torrlorthents. Rock outcrop. 69------ Vale 71r zVllla Grove ZoItay----- Severe: slope. Severe: sIope. SI lght----- Severe: sLope. l{oderate dusty. Hoderate: slope, dusty. Severe:slope. Severe: slope. Severe: s1ope. Hoderate: rretness. Severe: slope. Severe: sIope. Severe: sJ.ope. Hoderate: s1ope,dusty. Severe: slope. Severe: slope. Severe: sIope. Severe: s Iope. Hoderabe: floods, Helness. II I Moderate: I slope. II I Severe: pe Severe: sIope. Moderate:dusty. Itloderate: dusty. Moderate:slope, dusty. Moderate: slope. Moderate: slope. slo S1 lgh t slope Severe slt tgh r See descrlptlon of the map unlt for composltlon and behavlor characterlstlcs of the map unlt. t I 130 sotL suRVEY TABLE 12..-}'ILDLIFE HABITAT POTENTIALS [See text for deflnltlons of rrgoodrn rfalrrrr npoorrn and nvery poor.r Absence of an entry lndlcates that the soll r,as not ratedl I r n o anSe-1 ma So 1 name andp symbol lGrasses I herba- i Hard- i Conlf- | I and ! ceousl wood I erousl pen - Shrubs ll{etland lShallow! land lplantslwateriulld- land lt{etlandl Iandwtld-iwlld-iu11d-and seed 11fareasIlfetrees Falr Falr. Poor Very poor. r I I I VeryI poor. I I II I VeryI poor. I I I VeryI poor. II II II I very! poor. II i VeryI poor. II i VeryI poor. II II I veryI poor. II I VeryI poor. II II I VeryI poor. II I VeryI poor. II I III II I veryI poor. I I tI I VerY I poor. II ! YerYi poor. II lVeryI poor. I I II I I II II II II II I I II I I II I I I I I I I I II It I I II I I II II II tI I I II II II II tI II I I I I II II II II II II II II II II II I I I I I I II iF II II t I I I I I I I I I II tI I I i I I I I II I I Poor I I tI II I Poor II II I VeryI poor. II tI II i Very ! poor. I I i Good I I I I I Falr I I I I I I I Falr II II I Poor II II II i!aLr I II I I Poor I I II II II II I Falr II I I II I Poor I I II I Poor II IIlFalr I I I VeryI poor. I I I I I Very I poor. I I I Very! poor. II II II I Very I poor. II I VeryI poor. II ! VeryI poor. I ItI I veryI poor. I I I veryI poor. It II i VeryI poor. II I VeryI poor. II I I II I I iVeryI poor. II II lVeryI poor. I I I VeryI poor. t I I Very Very poor Very poor. Verypoor. Very II I Fatr II I I II I Falr II I I I Poor II II II II i Very I poo tI I Falr II I I I Falr I I I I tI i--- II II IIi--- II II II II I I II II II II IIi--- II I I I I I I Ii--- II II IIi--- I I II I I I I I II tI I Ii--- I I I I Itl--- II II I tI I IlFalr I IIi --- II I I I I I I I I I I I Ii--- I I I I rPoor a1FI Poor II II I Poor I Falr. II IIt'I I Falr. II II I Fatr. II II II I Fa1r. II II I Falr. t I II IItI II I Falr. II tI II I Fa1r. II II I Fair. II II i ! alr. II II I Fa1r. II II I Fatr. II I I I IlFalr.t I II I Good. II I I r poor. rPooFalr II II I I II II II II II II It II I I I VeryI poor. I I I VeryI poor. II ! veryI poor. II I VeryI poor. I! I I i VeryI poor. I I I VeryI poor. I I ! Falr II I I l FaLr t I I I I Falr I I I I I Falr I I I I I ! Fair I I I I I Falr I I I I PooFatr Fair Very POOr. Very poor. Very poor. Falr Fair Fai.r a1 r poor. II I Veryoorpoor.P a1F Poo Very poor. Ver y poor. Ver y poor. Very poor I VeryI poor II II I Very i poor I I I VeryI poor I I Falr r r antsI I I I I I t I I I I I I I I I II I Falr I I I I II I Falr I I I I I Poor II II II II I Poor IItI i Falr II II I falr II tI II I Falr II II i Falr I I II II ! Good I I II l Fai' r I I I I II II II I Falr I I II I I I Fair I tI I Falr Very poor. Very POOr. Very r Very poor. Very I IlFair I I II II I Poor I I II I VeryI poor. I I I Poor I I I I ! Poor II I I I I I.l I I I Very poo Very rAlmy Varlant Ansar 1 ----- Rock outcrop. 3, 4 Arvada 7*:Ascalon---- 8r:Atenclo---- Azeltlne'-- gr. Badland 10, I 1----- Begay 12| z Bucklon---- II II I VeryI poo I I poor.r I I II II iv poo Good Fatr orPo poo oor ery poor Good r poor. I I ! Good I I It II I Falr II II ! Very tI lFa 1r I II II tu I I II I I II III I iF iv II I I IF oodi Falr I III iP II I I II II Poo ral r a1r rPoo I I I I lFa I I IIirII I I tu ery poorInchau-'--- 13, 14 , 15--------- Chllion Cimarron 17 --------- Cochetopa 18r, 19r: Cochetopa-- Jerry------------- I Very po 1r a1r d r It I I I I I I ood Goo I I I Poor II II I I I Poor I I II I VerY . I poor. II or orPo rooiP I I I IF I I I I ai See footnote at end of table. RIFLE AREA, COLORADO 133 TABLE'12.--IdILDLIFE HABITAT,POTENTIALS--Contlnued So11 name and map symbol ra pen- 1 and ange- I andand lGrassesiherba-lHard- lContf-iseed I and I ceous I uood I erous I Shrubs I Wetland I ShaIl.ow 1 and Wetland I I plants water I w11d- i w11d- I w11d- I HtId- I I I I I I t t I T I I I I I I I I I ife feiIeume 3 lants trees lantss G II I Poor I I I lFalr I I I II II I I II, II I I I I I I I I II I I II II II II I Good I I II I VeryI poor. I I I I !Fa1.r II I I I Falr II II I Good II I I Poo r I I I Good I I I I I Falr II I I I I II I I t I I I I I I II tI I I I I II II II I I I I II I I II I I I Gooa II II i Good I I I I ! Good II I I II I Good I I I I I Falr I I II It II I I II I I II II I I II II II tI II IIIt I Good I I I I I Good I I II II I I I Poor I II I Fatr I t I I I I I II II II I I I I II II I I II I I I I II II I Good II II I Very . i poor II II I Poor II IIlFalrII I I ! Good I I63------ --------i'Poor ood 1rFaVery poor. Very poor. Very poor Ver y poor. Very poor. Verypoor. Very POOr. Very poor. Very poor. Ver y poor. Very poor. Very 9OOr. Verypoor. Good Poor Good Good Good Silas i I I 64- - - -- --- --------- | PoorTanna i II65r, iTorrlfluvents I I I66r: iTorriorthents. I IICamborthids. i I I Rock outcrop. ! II67rz iTorriorthenls. i I I Rock outcrop. i II 68- - - -------------- | F a1rVale i II69, 7o---- --------lVeryVaIe I poor 'I I 71r z iVll.Ia Grove------- I Poor i IZoItay------------ | Poor I i 7 2- ----- - - --------- I GoodtJann i Good Good Good Good Very or.por ery poo ery poo vVery poor Very ry oor oorP Poo Ve p ery poor v poor Fair odGoFalrFalrr I I . See descrlptlon of the map unlt for conposltion and behavior characterlstlca of the map unlt. I 134 SOIL SURVEY TABLE 13.--ENGII{EERING INDEX PROPERTIES [The symbol ( means less than; > means more than. Absence of an entry lndlcates that data were not estlmated] ass ca r a8-ercen a pas SolI name and map symbol USDA textureDepth lments I lUntfledlAASHTOi>3 i sleve number--i Liqutdi llmlt I as- lclty PtI 5- 10 1 0-20 10- 15 nd ex NP NP -2520 5- 10 5- 10 5- 10 20-3s NP-5 1 0-20 5-15 NP-5 1 0-20 5-'15 5-20 NP-5 NP-5 10- 15 5- 10 3020- 20-30 15-lt0- 1 0-20 30-40 20- 30 15-25 20-4 0 20-{ 0 't5-25 20-ll0 20-4 0 25 0) 50-qrl 20-40 20- 30 15-20 20- 30 5-25 NP55606030-A. See footnote at end of table. 4l q0 200 n I I80-95 i 50-75 75-95 i65-85 -7 -5 II t I I I I I 00i 55. ll0- II 190-100 185-100 i 75-90 I I II II II i 60-85 I I i 4o-70 I I I I I I I II A-A-2, Ii 0-5i 0-5 i25-35 I I II II I I i 25-q0 I I 1 i 3o-60 II I Ii --- I I ItI 5.15 I I i r 5-35 I I I I I II IIt'Ii0 0 0 0 ML I I Loam------ t- II 0-8 90- 1 75-90 i60-80 i50-70 85-100i A- A. A- 4 6 6 I cL- !cL icL iML , lGM, ock outcrop. Clay Ioam------- Flaggy clay Ioam, flaggy Very stony loam Very stony Ioamvery stony sandy Ioam. t{ea the red bedrock. Loam, stony loam Unweathered bedrock. Ioam, cI ayflne loam. i 8-34 i i3tl-60 Itll Itltl tllltttli 0-10itlll i 10-32itltltltli32 iIttlrllli 0- 101 lltl i10-18itltli 18 itllltltltltltlll Almy Variant 2r:I I I I I II I Io i35-55 I I5 I 20-35 II I I I I II0 i 45-65 I I0 irl5-65 II I III I I80 i45 I I 7o i35 I I I I I tI II0 i 70-8 It0 i 70-8 A-ll I I II I I I I iS am.1o M, GM, SM 75-9 75-9 tltlttlltltltltt 9o-1ooi85-95 i60-75 75-100I70-100I65-95 i 35-70II I I II I I i75-100 II I I II i 50-7 5 I I I I I I i 35- I I I I I I 175-100illtl i75-95 i lllltt Itltttlttttttttlt 190-100i I80-100i i A-4 I I i A-4 I I I I I I I I I I I iA-4 i A-7 II i A-7 cL-HL, SM.SC cL'ML, sH-sc Loam------------ 6A- I 0-3 iLoam------------i 3-17 lClay, sllty clay I i 1oam. i 17-60 | Clay Ioam, silty i i clay loam. tltli 0-5 iFlne sandy loan i 5-30lSandy clay loam ! 30-60 | Sandy loan, i ! sandy clay I i loam, flne i i sandy 1oam.tltlii A- A- andy loanclay loam scalon----- i 0-5 iFlne s i 5-30 | SandY i 30-60 i SandY I I sandY I I loam' I I sandy lltl CL-HLcL, cH SP, GP, SP-SM, CP.GM A-2, A-4 I I I I i A-2 I A-2, A-6 Arvada I I I I I I 4 ttltlli75-100i70-r00i55-80rtlrtlttltll i 90-100 i70-95 i25-50 i9o-1ooi8o-1ooi4o-55 i95-100i75-95 i35-65rtlrtlrtlrtlrtlrtl Itlrtl tllrtt i 90- 1 00 i70-95 i25-50 i90-100i80-100140-55 i95-1ooi75-95 i35-65rtltrlttlrllrtltll tllrtt i75-85 i70-75 i50-60 I I i80-100 II It i95-100 i95-100 195-100 II I I II I I II 195-100 i95-100 I95-100 I I I I II I I i 75-90 I 40-75 II I I II I I 0 0 Ir icL t I II iSM I sc, cL lsc,i sM-sc,I cL, I CL-HL I I II iSM I sc, cL ISC 'I sM-sc, I CL, I CL.ML I I i cL- ML iGM II II II II iSM isc i A-6 i A-4 II II I I I I I I i A-2 i A-6 iA-4 II I I I I II i A-4 iA-1iA-iA- 5, 6--'---' Ascalon 0 0 0 5-20 35-75 q 6 -65 i 20-50 II I I II I 30 5o-65 i 2o-30 35-65 i25-q5 I I 305- 0 , 2 q SM-SC i 0-12iStony loam------ i 12-60 | Very stony ).oam, i i very stony I I sandy loam. tltl ll| 0-1 1 i Sandy loam------ i 1 1-23 | Gravelly sandy i i clay ).oam, i i sandy clay | | loam. i23-2SlGraveIIy sandy i i clay loam, i I gravelly sandy I I loam. I 28-60 | Sand ' gravel, i i and cobbles. lltltlll I 100 90 75- 65- 5 5 0- 0- 5 tencio-----8r: J I I I I 40-65 1 0-35 ! 50-90 8050- tt0- 0A-2 140 SOIL SURVEY TABLE 13.--E[GIIIEERI]lc INDEX PRoPERTIES--Contlnued Soll name and map symbol pthDe PIas-ttctty 1 ndex PctI I I I I I I I I II I I II I I II II II I I II I I II I I i 70-90 i 70-95 I III i 60-95 I III II II I 50-60 i45-70 I Ii 3-55 I I II i 50-65 i 45-?o II II I I I I i 30-45 i 30-45 II II II I tttttt lrttttttllllttlllvlltltl tllltllltltltltllltllltt tlttttIt llttI 100 i90-1i 100 i90-1lltltltt| 1oo i85-1ttttttttItttlltt ! 95- 1 00 i 70-9 i 95- 1 00 i 70-9I t-tt i95-100i60-? 00 00 100 PctI I I I I II tI II I I II II II I I I I II II II II IISiIt loao------- I CL, CL-HLSilty clay 1oam, ICLclay Ioan, s1lbl1oam. iLoan, sllty clayl loara, sllt iIoam. i II I ILoam------------ i CIay loan, sandyl CL-ML sc iln i l-lll65r. i iTorrifluvents i itltt66r: i iTorriorthents. i ittttCanborthlds. i i llll Rock oulcrop. i i llll67r: i ITorrlorthents. i i llll Rock ouicrop. i iIttl68, 69, 7O---------i o-11iVale 111-26illtltlll i 26-60 i lllllltltttt a1|. I II t-a r IV1lIa crove i 0-4 ii 4_15itltl i 15-60i I I I I I I I I I t I I I I I I I I I 5- 15'to-2540 45 35 40 25- 30- 4025- 25- 30- 26 <25 0- 00 00 00 100 100 0 0 0 6A-A-4 ,A-4, A-6 A-7 A-4 t 5-15 5- 10 10- 15 15-25 100A.6CL, CL CL' 25- 30- 20- 0 5 0 85 80 70- 70- 0 0 o A-6 A-6 30 35 50 65-75 ItII80-95 I65-85 i II II I I II 95-100i 95-100i II I I II I I A-2, A-4 6 clay loaro. i Sandy loam, IoanlSH-SC, i CL-ML IILoam------- ----- iCLGravelly clay, iCL, GC,cobbly c1ay, i SCcobbly elay iloam. i II Sandy loan lSM, SH-SC Sandy loan, flnelSH, SH-SC sandy loao, !coarse sandy iloam. i I tI tIZoltay----- i 0-19 i 19-60 II II I I I I72-_-_--__- i 0-17l{ann i 17-60 II'I I I I 10-15 1 5-30 l{P-5 NP-5 7550 80-95 60-8030 0-5 5-7[-6 A. A- 95- 1 00 95- 1 0 0 A-2, A-4A-2, A-q 00i II II I I I I r See descriptton of the map unlt for composltlon and behavtor characterlstlcs of the nap unit. RIFLE AREA, COLORADO lTne TABLE 14.--PHISICAL AND CHEMICAL PROPERTIES OF SOILS symbol < means less than; > means more t,han. Entrles underItEroslon factors--T" appproflle. EnLrles under rr0rgantc Bat!eril app1y only to the surface layer. Absence ofthat data Here not avallable or uere not estimaLedl 141 I Ly an to Ehe entlreentry lndlcates Permeabillty iiirlAvaiLablei Soit lSali.nltyl Shrink-swe1I ! naber lreactlonl i potential icapaciLy i i i Erosloactor n S Orga n i, c matter K T So11 name and oap symbol I Depth i CIay (2mm I I re 3-5 ttltLow----------- io.zA i IModerate------ i 0.32 iLow-------- --- i0 .32itltltttlLow-----------10.10i 2Low-----------i0.10i tl tlttLow-----------i0.15i 1Low----------'i0.15i tl tltlttlllltlLow-----------10.32i 5Hlsh-'----- --- io .32i H lsh---------- i 0.32 IIttlLow-----------i0.1? i 5Moderate------ i 0.24 iLow-----------i0.241tltltt!tLow-----------10.17 i 5Moderate------ i 0.2q iLow----------- I 0.2tI ittttLow---'-------i0.28i 3Low------'---- i 0.24 i 5-1 -20.5 tt,tt tlllLow-----------10.24i 3Hoderate------i0.171Low-----------i0.10iLow-----------10.10illtlLow-----------i 0. 10i 2 Low-----------10.10i lltl !ltt tltlttll Low-_________-i0.ztt i 5Low----------- I 0.32 ILow----------- I 0.32 itttttlttl,loderate------i0.321 1Hoderate------i0.37i tl tltlLow-----------i0.32i 3Lou-----------i0.28i tl t!ltLoH-----------10.28i 5Low-----------i0.15i llttLou-----------i0.37i 5HLBh---------- i 0.32 i ll ll I I II I I I I II II I I I I I I I I I I I I I I I II I io. II I I I I I I II I a II II II II II II II I I II IItI I I II I I II II I I I I II II I i0 II 2-4 2-4 5-1 1-3 1-3 1-3 2-4 2-4 2-5 2-5 mmho s / cm <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <4 <4 <8 <2 <2 <2 <2 2-4 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 E! 7 .4-7 .8 7.q-8.4 7.9-8.4 4-8.4 9-8 .4 6 .6-1 6.6-7 7 .9-8 6-7 6-7 7 7 7 .9-8 .4 ' '1:9'u .9 .4 .8 >7 >8 >7 .8 .8 .4 I 8 4 4-7 .9 9-8 .4 8 B 4 4 . q-7 .4-7 .9-8 8.4 8.4 6 .6-8 . rl 7.tl-8.4 7 .4-8 .4 6. I -7.36.1-7.3 9-8.4 9-8 .4 6 6 7.9-8 9-8 7 7 7 7 7 7 7 7 9-4- 6.r-7.8 6.1-7.8 7 7 6 6 2-4<2 <2 6-7 .8 6-7 .8 6-2.0 6-0.2 See footnote at end of table. 0.6-2.0 0 .2-0 .6 0 .6-2 .0 0.6-2 In/ Ln i0.07-0.0 0 .06-0 .0 0.1 2-0.1 5 o .03-0 .08 0.10-0.13 0.08-0. 1 2 0.16-0.18 0 . o7-0 .09 0.09-0.1 1 0.11-0.'l 6 s.1l-0.15 0. 1 1-0. 15 0.16-0.19 0.18-0.20 0.r3-0.15 0 0 6-2.0 6-2.O 0 .6-6 .0 0 .6-2.0 9 9 13-0.15 11-0.15 .11-0.16 6 0 0-2 0 .6-6 .0 0 .6-2 .0 0.06-0.2 0 .06-0 .2 0.6-6 .0 0 .6-2.0 0.6-6 .0 0 0 0 0.6-2.0 0.6-2.0 2 0 2 6 2 0-6. 6-2. 0-6. 2 .0-6 .02.0-6.0 2 .0-6 .0 0 0 0 0. 1 2-0.1 4o.tl-0.13 0.07-0.09 0 .03,0 .05 0 0-20 0-6. >6 0.08-0.12 o. o 3-0.050 0.06-0.2 0 .06-0 .2 0.6-2.0 0 .6-2.0 0 .6-2.0 2 .0-6 .0 0. 0.0 0 . 12-0. 1ll 0.12-0.15 0.08-0.1 1 0. 1 7-0 .20 0.16-0.18 0.16-0.18 0.11-0.15 i0. l2-0. l tl i 0.07-0.09 I Ii0.r6-0.18 i 0. 1'l-0. 16 I I 25 ?5I y Varlant k ougcrop. 20-25 30-35 20-35 1 8-25 1 6-20 15-27 35-45 28-40 1 0-20 20-30 15-25 1 0-20 20-30 15-25 1 0-20 20-30 15-25 0-2 1 0-20 0-2 10- 18 1 o-20 10- 15 PcE 20-27 20-35 15-27 20- 35 15,: i In i ttio-8ii 8-3rt i I 34-60 Itltt lllli 0-10i i 1o-32 ii32 ilttti 0-10i i10-18 ii 18 ittttttlartrtt0-31i 3-17 i i 17-60 itllti0-5ii 5-30 i i 3o-60 Iltttttttio-5ii 5-30 i I 30-60 i i 18-60 itltltttttltlttlli 0-14i I r4-24 i i 24-60 itltlltttio-5ii 5-15ii 15 itltli0-3ii 3-36 ii36 ittlli 0-13i i13-6oitltllo-4ii 4-60 itltl rle------------ Ansarl---------- I Roc 6 I rvada 4 5 sc a lon--------- t 1 l [' Buck Ion--------- 7r: AI P 25 25 15- 15- tltli o_121 !12-60irltltlllto---------i 0-11i ll1-23i i23-28 i i 28-60 Illtline--------l 0-18i ena- : Eenc ze 1t, ad I and v 1 0-20 r0-18 10-25 35-tl5lmar ro nI I I 144 SOIL SURVEY TABLE 1q.--PHYSICAL AND CHEMICAL PROPERTIES 0F S0ILS--Contlnued Soil name and map symbol D thep CIay (2nml Permeabillty I I AvallabIe water So 1l reactlon aiiuroslonilSall.nltyl Shrlnk-sweII i facLors lOrsanlci I por,enrtal i-T-i mitrer 53r:Rhone----------- 5q, 55, 56------- Potts 57r, 58r, 5gr: Po tt s-- ---- ----- I Idefonso------- 60 61, ho neR 62r t Rock outcrop. Torriorthents. 65r. Torr I fluvents 66r: Torr io r then t s Camborthlds. Rock outcrop. 67t: Torr iorthents. Rock outcrop. 68, 69 , 7o------- VaIe 71r:Vl1la Grove----- Z oIt ay ----- - -- -- I I I I0-8 i 8-28 i28-52i 20-27 20-30 20-3052i II0-4 i 4-28 i 28-60 i I I I I0-q i 4-28 i 28-60 i II0-8 i 8-60 i II0-8 i 8-28 i28-52i52i III I II II II II 0-60 i II II0,9 i 9-24 i 24-30 i 15-25 20'35 15-25 15-25 20-35 15-25 15-25 15-25 20-27 20-30 20-30 30i II II I I I I II I I II It I I I I II I I I I I I I I II0-l1i 'l 1-26 | 26-60 i I I I0-4 I '{- 15 i'15-60 i I I 0-191 19-60 i II 0-17i 17-60 I I 15-27 20-27 3 5- tl5 27 -35 35-4 5 1 5-30 15-27 2o-35 15-25 20-27 25-35 1 5-30 10-18 10- 18 r 0 0 0 0 0 0 .0 .0 .0 0.6-2.0 0.6-2.0 0 .6-2 .0 6-2 6-2 6-2 6-2.0 6-2.0 6-2.O o.6-2 0 .6-2 0.6-? 2 .0-6 .0 2.0-6 .0 0 0 0 0.6-2.0 0 .06-0 .2 0.06-0 .2 0 .06-0 .2 0.6-2.0 0 .06-0 .2 0 0 0 2.0 2.0 2.0 6- 6- 6- 0.2-0.6 2 .0-6 .0 0 .2-2.0 2 .0-6.0 2 .0-6 .0 r See descriptlon of the map unlL for composition and behavlor characterlstlcs of ihe oap unlt. 3-6 6-7 .8 6-7 .8 6-7 .8 II I I i6. 16. 16. I I I Ii6. i6. tl. I I II i6.i6. tl. II ll. IIi6.i6.i6. II II II II II II II 6-7 .8 6-8 . rl 9-9.0 6-7 .8 6-8.4 9-9 .0 q-8 .4 9-8.4 6-7.8 6-7 .8 6-7 .8 16-0.18 1 9-0.2 1 16-0.18 i6.6-7.8 I I I I i 6 .6-7 .8 i 7.4-9 .0 i 7 .4-9 .0i--- II II II II II I I II II II I I II II I I I I II IIi6.1-?.8 i 6 .6-8 .4 l7 . tl-9 .0 It I I 0.19-0.21 0.1 5-0. 1 7 0.08-0.10 0.16-0.18 0.19-0.21 0.16-0.18 c acit n n 0.08-0.10 0.06-0.08 0 0 0 0.1 4-0.1 6 0 . 'l 4-0.20 0.12-0.18 0.07-0.12 o.19-0 .22 0.17 -0.22 0.13-0.20 0.16-0.18i7.4- 0.19-0.21 0.15-0.17 0.08-0.10 0.10-0.14 0.14-0.16 0.16-0.r8 0.15-0.1? 7 .4- 7 .9- 6.6-'t .8 6 .6-7 .8 8.4 8.4 8.4 4 4 6-8 9-8 0.17-0.19 0.13-0.15 6 7 s cm <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <rl <2 <2 <2 <2 <4 <4 <2 <2 <2 l-6 <8 <8 <2 <2 <2 <2 <2 II I 2tl iLow----------- Hoder ate---- --Low----------- Low-----------Moderate------Low----------- Low----------- Moderate------Low----------- Low-----------Low----------- Lou----------- Moder ate------Low----------- 0.24 0. 15 5 5 2 30 0.37 0.43 0.55 II . 151.t5l I I.24i .24 i .15i 0 0 .:z 0.43 0 .55 io II l0 io i0 5 3 3 Low----------- Moderate------ Hoder a te------Hoderate------ Mod er ate-- ---- Moder ate----- -Low----------- Mod er a te------ Low---------- - Hodera te------ Moderate--- ---Hlsh---------- Low-----------Lorr----------- i0.43i lo.24ltl IttlttItIttt lltttltltttltltltltrtltltltttllltttltllllllltltlttttio.32i 5 i0.rl3i i0 .43 itllltllli0.24i 5 i0.20 i i 0.321 tltl i0.28 i 5 i0.2qi tl i0.20 i 5 i0.201tl IIio. I II lo. 24i II II 37i 20-40 3-6 1-2 't-2 0.5-1 3-6 3-5 2-4 2-4 2-4 145 ,rtoooJJJ o, +)(! L(, !o- I I I I I @ Iot+, IGILIAE!r0Oi =:E I I I t I E l7!rIIltlrr]qoooqCoboo5oJJJJJJJJJJjJ l.o :l -- (, 4J(, L ru !o = o,o Lo!o = ttttttlltt U@ I t I I I U I I I I I U ltttoltDttoltLE.c{'SEOE4dO I a I I I @ tltlllltlt bo@ I I I I I t0 IFLE AREA, COLORADOT (,,oL <) o(J o oo L Lot) o :.o ztr rual!; rii rglt; L! lt6lir (tLDI ;: .co{, o, iii II: ii;. o.oI :' T I;f; '5 I iEoLC I ii !, .-ccli; OHo I;E 0 IiB arO ll- T I !od9('ooo+,oo !cltO ct iL!Lcl (E (E !co,oA Ir,lolclolgvl Gol-olL l-- -- --olol!l lclelorla L__ ,lil ool Eol ,ol cloll =olDloL----l l!cl ,bdoal o:L: -t,l-ct:lol= r;-EIrclsal 6ol Lolaolorl-L----l-t:l3lc t; l(,OdaLE'!oo>id L-s ! oaort.O nt >rEO dA d(!OEo I I I I I I I I]oJ !!tttrl!!rttr,rtttttt !!t{rooirtt+r!na!!rtooGirltLLLa_rrtoooiII]!!,!,rqqqoooo JJJ===J I I I I I t I ,,oJ tttlllru ru -!('G LLC' C'E!ooE= ltttlttttttttootl+rrtto(!tILLIloot]!'o!ooooJ-EJ ttrlllc, (,,,(l0 LLluo!!oo=- ru .o(, o. o. E oAD Go.a E ru A !Lo Go.o. G oo@\Oo\o ooo,t30 ll\Ooo o\ooo\O \O o @ oo\O \O o\o o\o oro ooSNltooGI H it o \o o \o o \o o ro o \o \o o \o o \o \o o \o <) \o o \o o \o o \o o \o \o oo ro tltt ltttla ltltttltttrtttttoo oo llltrltttttlttttattllttrtttrtttttttlttttru(rruoluqccctrooooo2===z I I I a I I I I ruco ltltltlttltlltrtlltltttlltattttlocrttoqcccoooo =2== I I I I I a I Ioco2 I I I I I a I I(,q o = ttttttltttlttlltoq,ctroo I I I a I I I I ruco- (J c)o oco o trt@ @ oo@ C)(J ()(-, {, A .o(E +, o Eco o o,oc !oo ooo I I a I t I I I I I I I L LoE I I I I I I I Io.r o.ioo9FO -orO@(J I I I I I I I I t(l tdrol!ltul.clotoF() I I I I I I I I I lcro IL IL lo IE li\o (J I I I I I I I Itn c =! m(J I I I I I I I I t I I =ot(,c H I I I I I I I I I I o sa..Oa,(\(D I I I I I I I I I I I I FaE 6-oo!Q Ec6 E.oarlo\ I I I I I I I I I lu +) ru N I I I I I I I I I Io oq IU .<o I I I I I I I I I I I t aoc ru o. I I l I I I I I I I coAo C' a<F a I -t Ittttttttttttll.ll9t10.tt EllottEttlltittott !ll+,ttr!Il Itc - I L t!, tin o o ta lG t(!ts i{ O C, => \OOd ..L C O L O N .n u,r I I I I I I I I SOIL SURVEYf' , c, EL(! E a, +) o oo +)o Lo!(, o L(o (, Lo (! .E iu ,o !co co a) ,loo Eo c, Lo +, tr, Ao rt,t, o co +,o, Loo a)! o{, .A a Eotg a) o Q I Io 3rlE =l{ :d t& Grtllr =o = JHo0I a rn lrlJto l< I I I I I I I I I I I I t I I I I t I 148 llloooJJJ IoJ IoJ toJ o+t C'L(,co() Eq, +'(! ooc a)oo L oooc !, Lo Ao +)cor)o A. ltttrttttlttItt E@r{, (, D IEL a,!o = I I I I I U I I I I a o rttatttrtariDl+)+)lot!t LLIoo.c'o!uOod--:E I I I o) +)o Lo!o- t I I I I I I IIoJ I I aq, +'o L a,!o- ooo\O \O \O o\o (,to6oA E I I I I I I I I IUco = I I I l I I I aoco- o Iom o E+tAoo o r)co = E+tAoo oE+,co- aEt'Lo o (t1 Io oo \at \a, oo ro \o \o (\t 3-l Lo lttttt a ruv, I Le I I I I I o Lgl II aII o, L tlt d(! tro o G <,oo Eo l' .EL,o (, tr C'a do Ll& o U!o>rd tlllllAlt(!ltcrtoltdlt,,otuoccoooo=-o ttlttttttltltttttlttat l!l, ttrdtco aGN N-F I I t a a I(, oL() (E ti F I I I I I I I Io F o\\o 0,A-G@> @ .o.o.raooqo !L('Lio.coE+)r.,.J:'LALOOOodDtaL.!aE o ..L O6 cl .o o(,IEFFE \o o,c 0).c Lo t. aoroF\o oD o a L ro l^Fi\o I I I I I I I t I I I II.ElctcIl! =li\o I I I t I a a I I I I ttotoIHtdr^ aA€ !cGdoo.oEE6>i IoL cEl (, cacoo co dq d6oeo RJE ABEA, coLoRADo 149 TABLE 16.--CLASSIFICATIOI,I OF THE SOILS Soll name ffi,:- Ascalon---- Chilton---- Dateman----Detra------ Famlly or hlgher taxonomlc class Flne'loamy, nlxed Borolllc HaplargldsLoany, mlxed Llthlc HaploborollsLoamy-skeIetal, m1xed, Arldtc HaploborollsFJ,ne, monlmor1l1on1tic, meslc UstolIlc NatrargldsFtne-loamy, mixed, meslc Arldlc ArglustollsFlne-Ioamy over sandy or sandy-skeletal, mlxed, meslFlne-loamy over sandy or sandy-skeletaI, mlxed, meslCoarse-Ioamy, mlxed, mesl.c Ustoll1c Camborthldi cAcT ridlc Arglustollsorrlorthentlc Haplustolls li i i i1--.. ::: - .:::::::::: Loamy, mtxed, shallor Typlc CryoborollsLoany-skeletal, mlxed (calcareous), meslc Ustlc TorrlorthentsFlne, montmorlllonltlc Arglc Vertlc CryoborollsFlne, montmorllloni!1c Arglc Pachlc Cryoborolls Flne-1oamy, mtxed, uestc Ustoll1c HaplargldsLoamy-skeletal, mlxed Pachlc CryoborollsFlne-Ioamy, mlxed Pachlc Arglborolls F1ne, montmorll,lonttlc (calcareous), frlgld Us!lc TorrlorthentsLoany-skeletal, mlxed Typlc PaleboralfsLoamy-skeletal, mlxed Typlc CryoborollsFlne, montmor1llon1tlc, meslc Ustertlc CamborthldsFlne, monLmorlllonltic Arldtc HaploborotlsLoany-skeletal, Bixed, Eeslc Ustolltc CalciorthldsFlne-Ioany, mlxed Arglc CryoborollsLoany-skeletal., nlxed Llthlc CryoborollsFlne, montnorl1lonlttc Arglc CryoborollsFine-loamy, nlxed (calcareous), oesl.c Ustlc Torrtorth€ntsFtne-loamy, ntxed Pachlc CryoborollsLoany, nlxed (calcareous), neslc Ltthic Ustlc TorriorthentsFlne, montnorlllonltlc (cal.careous), neslc Ustert,lc TorrlorthentsFlne-loamy, nlxed Arldlc ArglborollsLoany-skeletal, mlxed (calcareous), meslc Usttc TorrlorthenbsLoatry-skeletal, Dlxed Crylc Pachlc PaleborollsFine-Ioamy, mlxed, Ees:.c Ustolllc HaplargldsLoany-ske1eta1, olxed Typlc CryoborollsLoany-skeletal, nlxed, meslc Arldlc CaIclustollsFlne-loany, ntxed, neslc Ustolllc HaplargldsFlne-Ioamy, olxed Pachlc CryoborollsFine-Ioany, mlxed Cunullc CryoborollsLoaoy-skeletal, nlxed (calcareous) LlthLc CryorthentsFlne, DontEorlllonltlc Arldlc ArglborollsLoany-skeletal, mtxed Arldlc CalclborollsFlne-sllby, nlxed, nesic Arldlc ArglustollsFlne-Ioamy, ntxed Arldlc ArgtborollsCoarse-Ioany, ulxed, uestc Fluvaquentlc HaplustollsFlne, nontnorlllonltlg Pachlc Arglborolls I I I I I I I CLINETOP RANCH SUBDIVISION March 25, 1998 Page 51 of 8'l APPENDIX C WILDLIFE MITIGATION PLAN G:\98687\PRELIMINARY PIAN.doc *CLINETOP RANCIT' HIJBBELL FAMILY SUBDTVISION APPUCATION t2/15/e7 TTILDLIFE MITIGATION PIAN There is no doubt that building additional residences in a rural area will have an impact on the wildlife of the area. Additionaltraffic, noise, and disruption will not have a positive dfect ou the local wildlife However, we are attemptingto create an environment as friendlyto wildlife as possible. '![e are taking several positive steps to -ake our properry rnore habitable to wildlife: o STREAIvI: First and foremost, we have received permission from the Army Corps of Engineers to begin a river reconstruction proiea en 1f,s lanks of Main Elk Creet. Unuually high flows have seriorsly eroded the strean frnks and trout habitat has been seriorsly degraded. Stabilizing the benks and planting trees to begin root growth will positively impact aquatic qpecies. tr POND: \[e plan to dredge accumulated silt from the pond on the property and reinstall an inler to provide a constant flow of cold water. Recognizing the concerns of U.S. FisL and \flildlife and Colorado Division of !7ildlife biologists .regarding the introduction of non-native species, we plan to introduce greenback *ihro"i trout to the pond and rse them as a source of brood fish to sto&. Main Elk Creek with its native trout species. tr RIPARIAN HABITAT: Many large cottoswood trees have beeu uprooted by recenr flood evetrts, resulting in a los of riparian habitat. Pa-rt of our river reconsrrucrion plan is to plant many cottonwood and box eldertrees to begin-the process of root growth for bank stabilization. Thce cottonwoods will provide sU.de for the criek, nesting cover for large birds, and roosting areas for raptors. Et SONGBIRD AI\D BIG GAME HABITAT: '!fle plan to plant zones of berry species (serviceberry and chokecherry) and undergrowth to provide nesting cover aod fotage for songbirds, and possibly winter forage for elk and deer. o FENCING: Livestock fencingwill be moved back from stream brnks at least 20 feet to protect wildlife habitat and riparian zones. I{IILDLIFE MTIGATION PI-aN (p. 2) g DOGS: \7e have noted with concern that femr of the surroundi.g neighbors seem 1e lselizg 1f,s im.porrance of keeping dogs from nrnning loose. On visits to our properrl, as mtrnl as five of the neighbors' loose dogp have ioined us on our prop.*y. Our dop will be kept underthe direa control of the owrer at all times while on the property aad will not be dlowed to stray from the ProPerty. DoEp ruoning big gami will not be allowed fud will not be tolerated- ![hen no residents are home to supervise dogs, dogs will be kenneled. As a licensed Colorado outfifter involved io gudiog rrpl.od bird and waterfowl hunB, owuing well'trained huoting dop is a vitel pan of my btrsiness. It is extremely counter?roductive to risk thi los of a valuable hunting dog by letting it nrn loose and risk b.iog shot or run over. Et I7ETI-ANDS: The wetlands on this properry are known as 'ribbon wetlards,' which are characteizedby narrow strips of willows and backwaters alongthe stream course. No building is planned in any wetlands on the property, and walands will not be negatively impaaed by this proiect. In fao, walands will be enhanced 3hrorgh the stream stabilization proiea we are pl+rrtti'tg for the stream Srnks and the pond- CLINETOP RANCH SUBDIVISION March 25, 1998 Page 54 of 81 APPENDIX D DRAINAGE STUDY REPORT G:\98687\PRELIMINARY P|AN.doc IIIIIIIIIIIIIIIIIII +\. CD '! i I \ L- ii rl ) i t I t,| -.' i I J l, I l I I I I 1 i I I I I I I i I I I I It i ) t 1- I t I .tt, ,.] tr'/- I +--it_ ..r-rr' l! T 0tl 11 li ,,1 E 6)n nI a) ao 8[ Im{ _t '- t-IlZ mr:)^r--n\lm r -ri |-{rLr- -. (,o F<,\' i -.2O O f''-1;n -n L^lm ri(-]Flrl nN -:a --r )> (J _<=t1-7L m a\L' = PFlro 5 iYtz---l LD -I A)-f! ,rrl-E<,- \-/ rrr |J{-I> ",OU C)'N) 5 U'J I I T t I I I I I I I I I I I I T I I tmp#1.8t TR-55 Tabular Hydrograph Method lnput Summary Description HUBBELL 2$YEAR Rainfall Distribution ........... Type ll lalP lnterpolation ........,..... 0nTotaltuea 0.5581 mi2 Peak Time Peak Flow Given lnput Data: 12.2000 hrs 381.9756 c'fs Subarea D/S SubareasDescription (mi2) Area CN Tc (hrs) (hrs) Tt Rainfall (in) A-BASIN &BASIN C-BASIN 0.2453 0.1605 0.1524 83 0.2161 85 0.1850 85 0.2293 0.0339 0.0339 0.0000 2.2000 2.2000 2.2000 Support Data: Subarea Name: A-BASIN, Row: 1 Sheet Flow Desoiption Manning'sn..................... 0.1300 Flow Lengtr 298.8603 ft Two Yr, 24 hr Rainfall .......... 1.2000 in Land Slope 0.4015 fi/ft Computed Sheet flow time .......................> 0.1720 hrs Messages: lnfo: Time of Concentration rounded to 0.2000 hrs in row <1> lnfo: Time of Concentration rounded to 0.2000 hrs in row <2> lnfo: Time of Concentration rounded to 0.2000 hrs in row <3> Shallow Concentrated Flow Description Surface Unpaved Flow Length 197.4372ft Watercourse Slope ............... 0.4052 ft/fl Velocity 10.2705 Ss Messages: lnfo: T'ime of Concentration rounded to 0.2000 hrs in row <1> lnfo: Time of Concentration rounded to 0.2000 hrs in row <2> lnfo: Time of Concentration rounded to 0.2000 hrs in row <3> ChannelFlow Page 1 Description Flow Area .5.0000 ft2 Wetted Perimeter 89.6656 in Flow Length 4069.7378 ft 0.2624fitftChannelSlope Manning'sn..................... 0.0200 Hydraulic radius ................ 8.0298 in Velocity 29.1 175 fps Mesages: lnfo: Time of Concentration rounded to 0.2000 hrs in row <'l>. lnfo: Time of Concentration rounded to 0.2000 hrs in row <D. lnfo: Time of Concentration rounded to 0,2000 hrs in row <3>. ffiffiffi Total Time of Concentration ..> 0.2161 hrs Channel Flow Description Flow fuea 14.0000 ft2 Wetted Perimeter 143.3313 in Flow Lengtt 3656.0499 ft 0.1313 fi/ft 0.0200 Channel Slope Manning's n Hydraulic radius ................ 14.0653 inVelocity 29.9295 Ps Messages: lnfo: T'ime of Concentration rounded to 0.2000 hrs in row <1>. lnfo: Time of Concentration rounded to 0.2000 hrs in row <2>. lnfo: T'ime of Concenbation rounded to 0.2000 hrs in row <D. ffi TotalTime of Travel ..> 0.0339 hrs ffi Subarea Name: B-BASIN, Row:2 Sheet Flow Descdption Manning'sn..................... 0.1300 Flow Length 294.8373 fl Two Yr, 24 hr Rainfall .......... 1.2000 in Land Slope 0.s442 fufr > 0.1507 hrsComputed Sheet flow time Messages: lnfo: Time of Concentration rounded to 0.2000 hrs in row <1> lnfo: Tlme of Concentration rounded to 0.2000 hrs in row <2> tmp#1.fit Page 2 I I I I I I I I t I I I I I I I I I I lnfo: Time of Concentration rounded to 0.2000 hrs in row <3> Shallow Concentrated Flow Description Surface Unpaved Flow Length 237.0991 fi Watercourse Slope ............... 0.5061 fi/ftVelocity 11.4782tps Messages: lnfo: Time of Concentration rounded to 0.2000 hrs in row <1> lnfo: Time of Concentration rounded to 0.2000 hrs in row <2> lnfo: Time of Concentration rounded to 0.2000 hrs in row <3> Channel Flow Desuiption Flow Area 5.0000 ft2 Wetted Perimeter................ 89.6656in Flow Length 3560.4046 ft Channel Slope ................... 0.3707 fi/t Manning'sn..................... 0.0200 Hydraulic radius ................ 8.0298 in Velocity 34.6086 frs Messages: lnfo:Time of Concenbation rounded to 0.2000 hrs in row <1> lnfo: Time of Concentration rounded to 0.2000 hrs in row <2> lnfo: Time of Concentration rounded to 0.2000 hrs in row €> rt*ffiitrr*r**ttt Total Time of Concenbation .........................> 0. 1 850 hn Channel Flow Description Flow Area 14.0000 ft2 Wetted Pedmeter 143.3313 in Flow Length ChannelSlope Manning's n 3656.0499 fr 0.1313 fr/ft 0.0200 fnp#1.Ut Hydraulic radius ................ 14.0653 inVelocity 29.9295 frs Messages: lnfo: Time of Concentration rounded to 0.2000 hrs in row <1>. lnfo: Time of Concentration rounded to 0.2000 hrs in row <2>. lnfo: Time of Concentration rounded to 0.2000 hrs in row <$. *ffit Total T'ime of Travel .......> 0.0339 hrs Page 3 tmp#1.kt TR-55 Tabular Hydrograph Method lnput Summary Description HUBBELL 1OO-YEAR Rainfall Distribution ........... Type ll lalP lnterpolation .............. 0nTotalArea 0.5581 mi2 Peak Time Peak Flow Given lnput Data: 12.2000 hrs 521.6319 cfs Subarea D/S Subareas Desoiption Area CN Tc Tt(mi2) (hrs) (hrs) (in) Rainfall A.BASIN B.BASIN GBASIN 0.2453 0.1605 0.1524 83 0.2161 85 0.1850 85 0.2293 0.0339 0.0339 0.0000 2.6000 2.6000 2.6000 Support Data: Subarea Name: A-BASIN, Row: 1 Sheet Flow Desoiption Manning'sn..................... 0.1300 Flow Length 298.8603 ft Tno Yr, 24 hr Rainfall .......... 1.2000 in Land Slope 0.4015 fl/ft Computed Sheet flow time .......................> 0.1720 hrs - Shallow Concenbated Flow Description Surface Unpaved Flow Length 197.4372ft Watercourse Slope ............... 0.4052 fr/ft Velocity 10.2705 frs ChannelFlow Descdption Flow Area 5.0000 n2 89.6656 in 4069.7378 ft 0.2624 ff/ft 0.0200 8.0298 in Wetted Perimeter ................ Flow Length Manning's n Channel Slope ................... Hydraulic radius ................ Page 1 I I I I I I I I I I I I I I 5.0000 fl2 89.6656 in 3560.4046 ft 0.3707 fl/ft 0.0200 8.0298 in fnp#1.bd ffir*Fffiffir*i*H Total T'ime of Concentration ......> 0.2161 hrs rTffiHffiffiffi ChannelFlow Desoiption Flow Area 14.0000 ft2 Wetted Perimeter 143.3313 in Flow Length 3656.0499 ft 0.1313 fuftChannel Slope Manning'sn..................... 0.0200 Hydraulic radius ................ 14.0653 in Velocity 29.9295 frs ffiffi*Hr**rffi TotalT'ime of Travel ....> 0.0339 hrs r.rffififfiffir Subarea Nams &BASIN, Row: 2 Sheet Flow Desoiption Manning'sn..................... 0.1300 Flow Lengtt 294.8373 ft Two Yr, 24 hr Rainfall .......... 1.2000 in Land Slope 0.5442 ft/ft Computed Sheet flow time .......................> 0.1507 hrs -- Shallow Concentated Flow DesoiptionSurface .. Unpaved Flow Length 237.0991 ft Watercourse Slope ............... 0.5061 fi1ft Velocity 11.4782 frs Channel Flow Desoiption I I I I I Flow fuea Wetted Perimeter Flow Length ChannelSlope Manning's n ..................... Hydraulic radius ............... Page 2 I I I I I I I I I I I I I I I I I I I Velocity Computed Channel flow time 34.6086 fus tmp#l.ht .> 0.0286 hrs Fttl#fi*ffiffiffi Total T'ime of Concentration H*E#ffiffffi Channel Flow Desoiption Flow Area Wetted Pedmeter Flow Length Channel Slope ................... Manning's n ..................... Hydraulic radius ................ Velocity 14.0000 ft2 143.3313 in 3656.0199 ft 0.1313 fr/ft 0.0200 14.0653 in 29.9295 frs .> 0,1850 hrs Computed Channel fl ow time r*ffitritffiffi TotalT'ime of Travel ....> 0.0339 hrs rfiill*ffiffi Subarea Name: GBASIN, Row: 3 Sheet Flow Desoiption Manning'sn..................... 0.1300 Flow Length 284.6547 ft Two Yr, 24 hr Rainfall .......... 1.2000 in Land Slope 0.2810 fi/ft Computed Sheet flow time'......'........'......> 0.1 908 hrs " Shallow Concen[ated Flow Desaiption Surface Unpaved FlowLength 248.1604ft Watercourse Slope ............... 0.8059 ff/ft Velocity 14.4843 fus Computed Shallow flow time ...> 0.0048 hrs ChannelFlow Description Flowfuea Wetted Perimeter ...........'.... Flow Length Channel Slope ................... Manning's n ..................... Hydraulic radius ................ 9.0000 fl2 116.4984 in 1 125.7693 ft 0.3198 fi/ft 0.0200 1 1 .1246 in Page 3 Velocity 39.9482 frs Computed Channel flow time Channel Flow Description Flow Area 14.0000 ft2 Wetted Perimeter 143.3313 in Flow Length Channel S10pe ................... Manning's n Hydraulic radius ................ 14.0653 in Velocity 31.8296 frs Computed Channel flow time 2963,2488 ft 0.1485 fl/ft 0.0200 ..> 0.0078 hrs tmp#1.bd ....> 0.0259 hrs ffit Total Time of Concentation ffiffi ......> 0.2293 hrs Page 4