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Drainage Reports - 07/03/2001
final Approved Report "I, ate Vs EROSION CONTROL REPORT FOR FORT COLLINS GOOD SAMARITAN VILLAGE A PLANNED MULTI -FAMILY HOUSING DEVELOPMENT r r II La�ndmarN ' EROSION CONTROL REPORT FOR FORT COLLINS GOOD SAMARITAN VILLAGE A PLANNED MULTI -FAMILY HOUSING DEVELOPMENT ' Prepared For: ' Fort Collins Good Samaritan 508 West Trilby Road ' Fort Collins, Colorado 80525 ' March 14, 2001 Project No. FTCG-6G8B-04-304 ' ENGINEERS/PLANNERS/ARCHITECTS ' Landmark Engineering Ltd. 3521 West Eisenhower Boulevard Loveland, CO 80537 CERTIFICATION I hereby certify that this Final Erosion Control Report for the Fort Collins Good Samaritan Village was prepared by me or under my direct supervision in accordance with the provisions of the City of Fort Collins Storm Drainage Crite��i�,fo r the Owners thereof. .,o\\\\0 REG. Rodney A. H t g Colo. P.E. 25V8 �0���4 \• TABLE OF CONTENTS Discussion.................................................................. 1 General Erosion and Sediment Control Measures ..................................... 1 Minimizing Soil Controlled Runoff Across Exposed Areas Sediment Control Erodibility Classifications...................................................... 2 Development................................................................. 2 Current Conditions............................................................. 2 Landscaping and Erosion Control Notes ........................................... 2 Erosion Control Plan.......................................................... 3 Erosion Control Cost Estimate .................................................... 5 City Reseeding Cost............................................................ 5 EXHIBIT Erosion Control Plan APPENDIX `A' Erosion Control Evaluation - Area Allocation Table - Sediment Trap Volume Tables - Rain Fall Performance Standard Evaluation - Performance Standard Table - During Construction Effectiveness Calculations - Post Construction Effectiveness Calculations - Construction Sequence APPENDIX `B' Seeded Soils Information Section of USDA Soils Map Soil Types Recommended Seed Species EROSION CONTROL REPORT ' This report describes methods which are recommended to control wind erosion, water erosion, and sediment during and after the construction of drainage structures and site grading. Discussion ' The cleaning and stripping of land for site grading, overlot grading, or for the construction of drainage structures and swales, may cause high -localized erosion rates with subsequent sediment deposition and damage to offsite properties. Uncontrolled, such erosion could destroy the aesthetic and practical values of individual sites, causing damage to downstream property. In general, erosion and sediment control measures may consist of minimizing soil exposure, controlling runoff across exposed areas, and containing sediment at drainage structures. Each of these measures is described below and should be utilized by the developer and the contractor during any construction activity which occurs at the site. ' General Erosion and Sediment Control Measures ' Minimizinjz Soil Exposure: Where practical, the construction area and duration of soil exposure should be kept to a minimum. All disturbed areas should be completed and/or stabilized as soon as practical after commencement of construction. A temporary cover crop, permanent vegetative cover crop, or other ' landscaping should be established in the disturbed areas to minimize soil exposure. Without exception, no soils in areas outside the project street rights -of -way shall remain exposed by land disturbing activity for ' more than thirty days before required temporary or permanent erosion control. Revegetation may consist of native grasses, lawn grasses, sodding, or various winter wheats. Decorative rock, flower gardens, or shrubs may also be utilized in the final landscaping to cover the soil. Reseeded areas should be mulched with ' straw or hay to protect exposed soil until vegetation is established. ' Controlled Runoff Across Exposed Areas: Where practical, construction may include building temporary swales to intercept and direct storm water around exposed areas. Swales can also be constructed to control or facilitate the movement of surface water that collects on exposed areas. Riprap, or other temporary erosion ' control devices such as straw bale filters, may be installed to control storm water velocities across exposed areas or in swales. ' Sediment Control: Temporary and/or permanent sediment control devices will be installed at the major drainage structures and flow concentration points. Such structures should intercept and trap sediment, ' preventing it from migrating offsite and onto downstream properties. ' Erodibility Classification ' According to the Fort Collins Erodibility Map, the project lies within the following area: ' Rainfall: 100% Moderate Wind: 100% Moderate Development This project proposes the construction of the first phase of the Fort Collins Good Samaritan Village, consisting of twelve new duplex and three new triplex residential housing units. A total of 33 new single ' family dwelling units will be created. Approximately 2,475 linear feet of new roadway will be constructed to serve;this housing complex. The project also involves the construction of roadside and reattached sidewalks, driveways, a gazebo, and a stormwater drainage system. There will be approximately 4.21 acres ' of new impervious area created over the site, bringing the site total to 7.52 acres of impervious area. The Area Allocation Table located in Appendix `A' contains further information on the proposed ground cover for this phase of development. Current Conditions The total project site is 15.33 acres and contains existing building and parking areas located in the Southern one third of the property. The existing impervious area is approximately 3.31 acres. Currently turf grass exists adjacent to the existing building and parking areas. The remainder of the property is covered with ' established native grass with approximately 60% ground cover. ' Landscaping and Erosion Control Notes ' The site will be landscaped per the Landscape Plans included within the project plan set. The new home sites, parking islands, walkways, and along the road sides will be landscaped with trees, shrubs, and grass. ' The majority of the ground will be covered with an irrigated blue -grass sod. There will be a 1.5-acre section of the property planted with a non -irrigated seed mix, which is intended for a future building. The seed 2 ' mixture is specified on the Erosion Control Sheet (Sheet 6 of the plan set) and will be drill seeded and hydro - mulched. The landscape contractor is required to provide a 30-day growth establishment program, and a 1- ' year warranty for all of the landscaping. ' A combination of inlet protection filters, straw bale barriers, and sediment traps will provide the erosion and sedimentation controls. Silt fencing will also be installed and utilized for both wind and water erosion control. Four temporary sediment traps and one permanent detention and sedimentation basin will control ' sedimentation, which is not collected by barrier protection. The majority of disturbed runoff will flow through both a temporary sediment trap and the permanent detention/sediment basin. ' As part of the calculations for the "During Construction Performance Standard," areas to be sodded which do not require regrading have been considered as undisturbed native grass. In order for this assumption to be valid, these areas must be prepped and sodded by the site contractor after the site is stabilized. ' Erosion Control Plan The proposed erosion control measures are presented on the Erosion Control Plan of the drawing set for this project. The evaluation of the Performance Standard and Net Effectiveness are presented in Appendix W. In summary, the erosion control measures consist of: ' The utilization of four smaller detention areas throughout the site as temporary sediment traps until construction is complete and the site is landscaped and stabilized, and one permanent water quality embedded deterition/sedimentation basin at the Northwest corner of the property. A perforated intake pipe ' embedded in a rock filter has been designed for water quality, and will be utilized as the outlet structure for the permanent detention basin. Sedimentation areas are provided at the four smaller sediment traps, and the ' large detention basin will have adequate size to accommodate the remaining 23 cubic yards of anticipated sediment from a 10-Year intensity storm. The contractor will be required to control the grading so that the runoff is directed to the sediment ponds during construction. ' A combination of gravel and straw bale filters will be installed at all curb and area inlets. Straw bale barriers ' will be installed and function as sediment traps at the outlet structures of the four smaller temporary sediment basins. Silt fences will be provided along the Northern property line (Skyview South Second Filing) and the Northern half of the Eastern property line along Constellation Drive. The existing building located on the ' Southern section of property will also create a windbreak. In addition, all exposed soil is to be roughened and watered during overlot grading until the site is stabilized. 1 3 Drought tolerant, non -irrigated drill seed mix shall be placed in all areas not receiving sod placement. Hydro -mulch shall be provided at 2 tons per acre over seeded area. The contractor will be required to furnish a temporary, above ground method of irrigation as a supplement to natural precipitation in order to assist proper germination of seed. Extensive sod placement throughout the project and landscaping in planters and along walkways will be provided as permanent ground cover. All sod in areas which do not require regrading must be prepped and placed after the site is stabilized. 4 Qlandmark 3521 W. Eisenhower Blvd. LETTER OF TRANSMITTAL Loveland, Colorado 80537 970-667-6286 TO: City of Fort Collins Storm Water Util P.O. Box 580 Fort Collins, CO 80522 Date: 7/5/01 1 Job No.: FTCG-6G8B04-301 Attention: Basil Hamdan RE: Fort Collins Good Samaritan Village WE ARE SENDING YOU THE FOLLOWING: ❑Prints ❑Preliminary Drawings ❑Final Drawings ❑Originals ❑Contract Plans & Specification s❑Change Order ❑Separate Cover Via Mail ® Report Sets Copies Description 3 Erosion Control Cost Estimate Revision These are transmitted as checked below: ❑For approval ❑For review and comment ❑Amend and resubmit ❑For your use ❑No exceptions taken ❑For your signature ®As requested ❑Make corrections noted ❑For bids due Remarks: Basil. Here is the ammended Erosion Control Cost Estimate if you need anything else please feel free to call COPY TO: Signed:��/l Brian J. Haile 970-667-6286 FAX 970-667-6398 Metro 303-629-7124 Ft. Collins Good Samaritan Erosion Control Report Erosion Control Cost Estimate No. Item Otty. Unit Unit Cost Total Comments 1. Silt Fence Barrier 2,220 Feet $ 3.00 $ 6,660.00 2. Drill seed with drought 1.49 Acre $ 600.00 $ 894.00 $0.014 / S.F. tolerant non -irrigated seed mix (Selected areas not receiving sod.) 3. Gravel Inlet Protection 11 Ea. $ 325.00 $ 3,575.00 4. Straw Bale Inlet 3 Ea. $ 285.00 $ 855.00 Protection 5. Straw Bale Barrier 2 Ea. $ 270.00 $ 540.00 6. Straw Bale Sediment 3 Ea. $ 300.00 $ 900.00 Trap Outfall 7. Drill seed with drought 5.73 Acre $ 650.00 $ 3,724.50 $0.015 / S.F. tolerant non -irrigated seed mix S. Perforated Riser 1 Ea. $ 1,500.00 $ 1,500.00 Sediment Trap Construction Construction Cost $ 18,648.50 50% Construction Cost $ 9,324.25 Total Security $ 27,972.75 ON Reseeding Cost No. Item Q>Y Unit Unit Cost Total Comments 1. Drill seed with 9.13 Acre $650.00 $5,934.50 $0.015 / S.F. drought tolerant non - irrigated seed mix (Total area not disturbed.) Construction Cost $ 5,934.50 50% Construction $ 2,967.25 Cost Total Security $ 8,901.75 5 0 No. 1. 2. 3. 4. 5. 6. 7 8. Ft. Collins Good Samaritan Erosion Control Report Erosion Control Cost Estimate Item Qtv. Unit Unit Cost Silt Fence Barrier 2,220 Feet $ 3.00 Drill seed with drought 1.49 Acre $ 600.00 tolerant non -irrigated seed mix (Selected areas not receiving sod.) Gravel Inlet Protection 11 Ea. $ 325.00 Straw Bale Inlet 3 Ea. $ 285.00 Protection Straw Bale Barrier 2 Ea. $ 270.00 Straw Bale Sediment 3 Ea. $ 300.00 Trap Outfall Drill seed with drought 5.73 Acre $ 650.00 tolerant non -irrigated seed mix Total $ 6,660.00 $ 894.00 $ 3,575.00 $ 855.00 $ 540.00 $ 900.00 $ 3,724.50 Perforated Riser 1 Ea. $ 1,500.00 $ 1,500.00 Sediment Trap Construction Constriction Cost 50% Constriction Cost Total Security City Reseeding Cost No. Item t t . Unit Unit Cost 1. Drill seed with 9.13 Acre $650.00 drought tolerant non - irrigated seed mix (Total area not disturbed.) Construction Cost 50% Construction Cost Total Security S $ 18,648.50 $ 9,324.25 $ 27,972.75 Total $5,934.50 $ 5,934.50 $ 2,967.25 $ 8,901.75 Comments $0.014 / S.F. $0.015 / S.F. Comments $0.015 / S.F. Ft. Collins Good Samaritan Erosion Control Report Erosion Control Cost Estimate No. Item (Oty. Unit Unit Cost 1. Silt Fence Barrier 2,220 Feet $ 3.00 2. Drill seed with drought 1.49 Acre $ 600.00 tolerant non -irrigated seed mix (Selected areas not receiving sod.) 3. Gravel Inlet Protection 11 Ea. $ 325.00 4. Straw Bale Inlet 3 Ea. $ 285.00 Protection 5. Straw Bale Barrier 2 Ea. $ 270.00 6. Straw Bale Sediment 3 Ea. $ 300.00 Trap Outfdl 7. Drill seed with drought 5.73 Acre $ 650.00 tolerant non -irrigated seed mix 8. Perforated Riser 1 Ea. $ 1,500.00 Sediment Trap Construction Construction Cost 50% Constriction Cost Total Security City Reseeding Cost No. Item Qtv. Unit Unit Cost 1. Drill seed with 9.13 Acre $650.00 drought tolerant non - irrigated seed mix (Total area not disturbed.) Construction Cost 50% Construction Cost Total Security 5 Total $ 6,660.00 $ 894.00 $ 3,575.00 $ 855.00 $ 540.00 $ 900.00 $ 3,724.50 $ 1,500.00 $ 18,648.50 $ 9,324.25 $ 27,972.75 Total $5,934.50 $ 5,934.50 $ 2,967.25 $ 8,901.75 Comments $0.014 / S.F. $0.015 / S.F. Comments $0.015 / S.F. Erosion Control Cost Estimate No. Item Ottv.. Unit Unit Cost Total Comments 1. Silt Fence Barrier 2,220 Feet $ 3.00 $ 6,660.00 2. Drill seed with drought 1.49 Acre $ 600.00 $ 894.00 $0.014 / S.F. tolerant non -irrigated seed mix (Selected areas not receiving sod.) 3. Gravel Inlet Protection 11 Ea. $ 325.00 $ 3,575.00 4. Straw Bale Inlet 3 Ea. $ 285.00 $ 855.00 Protection 5. Straw Bale Barrier 2 Ea. $ 270.00 $ 540.00 6. Straw Bale Sediment 3 Ea. $ 300.00 $ 900:00 Trap Outfall 7. Sod Placement 5.73 Acre $10,800.00 $ 62,400.00 $0.25 / S.F. 8. Perforated Riser 1 Ea. $ 1,500.00 $ 1,500.00 Sediment Trap Construction Construction Cost $ 77,324.00 50% Construction Cost $ 38,662.00 Total Security $115,986.00 City Reseeding Cost No. Item Qtv. Unit Unit Cost Total Comments 1. Drill seed with 9.13 Acre $650.00 $5,934.50 $0.015 / S.F. drought tolerant non - irrigated seed mix (Total area not disturbed.) Construction Cost $5,934.50 50% Construction $ 2,967.25 Cost Total Security $8,901.75 APPENDIX `A' EROSION CONTROL EVALUATION DRAINAGE SUB -AREA REQUIRED SEDIMENT TRAP VOLUMES TABLE Average Drainage Total Disturbed Channel Average Sedimnet Sediment Sub -Area Acres Acres Distance Slope LRa jd� Trap 11 3.42 1.78 362 0.6 2.34 3.30 1 &2 12 0.53 0.23 552 0.4 1.82 0.26 1 &2 21 0.59 0.21 274 1.6 4.3 0.55 5 22 0.80 0.48 249 0.7 2.47 0.80 5 23 1.41 0.97 382 1.0 3.4 2.43 5 24 0.67 0.19 276 1.3 3.74 0.43 5 25 0.96 0.12 400 2.1 5.79 0.40 5 31 0.28 0.28 316 0.9 1.72 0.31 5 32 0.80 0.8 241 0.5 2.03 1.17 3 33 0.40 0.4 439 0.9 3.2 0.85 5 34 0.33 0.33 174 8.8 28.76 6.15 5 35 0.50 0.5 224 7.7 27.3 9.29 5 36 0.70 0.7 413 1.0 3.45 1.71 5 37 0.31 0.31 230 1.2 3.42 0.68 5 38 0.06 0.06 134 0.7 2.21 0.07 5 41 0.79 0.51 146 1.0 2.73 0.95 5 42 0.05 0.05 102 0.7 2.11 0.05 5 43 0.31 0.31 293 1.4 3.98 0.79 5 44 0.22 0.22 192 1.4 3.61 0.49 5 45 0.18 0.18 214 1.3 3.98 0.43 5 46 0.14 0.14 119 0.7 2.16 0.18 5 47 0.14 0.14 119 0.8 2.31- 0.19 5 61 0.27 0.18 219 0.4 1.81 0.20 5 62 0.32 0.32 258 2.7 6.56 1.35 5 63 0.13 0.12 121 3.6 7.38 0.51 5 64 0.42 0.42 123 0.8 2.32 0.65 5 65 0.21 0.19 145 2.1 4.47 0.51 5 66 0.38 0.15 245 1.0 3.11 0.27 5 67 0.48 0.32 405 0.6 2.37 0.49 5 68 0.71 0.71 349 2.1 5.62 2.83 4 69 0.11 0.01 237 0.4 1.81 0.01 5 71 0.11 0.11 96 5.0 9.89 0.62 SEDIMENT TRAP TABLE Sediment Contributing Required Actual Additional Sediment Trap Sub -Area Size Size Volume (cubic yard) 1 11,12 342.00 1056 3.56 2 11,12 0.0" 324 1.50" 3 32 80 117 1.17 4 68 71 78.88 2.83 5 All Others 3401.60 6546 0" " All of the required sediment trap size and additional sediment volume will be provided bu Sediment Trap No. 1, but 1.5 cubiv yards of sediment volume will be provided to prevent clogging of the downstream culvert. Sediment Trap No. 5 will be a combined detention basin with a permanent water quality control outlet and will require sediment removal maintenance. Due to this factor and the large size of the basin, no additional sediment volume will be provided. I RAINFALL PERFORMANCE STANDARD EVALUATION PROJECT: Fort Collins Good Samaritan Village STANDARD FORM A COMPLETED BY: Brian J. Hailey DATE: 10/13/00 DEVELOPED ERODIBILITY Asb Lsb Ssb Lb Sb PS SUBBASIN ZONE (ac) (ft) (%) (feet) (%) (%) 11 100% Mod 3.42 362 0.6 12 100% Mod 0.53 552 0.4 21 100% Mod 0.59 274 1.6 22 100% Mod 0.80 249 0.7 23 100% Mod 1.41 382 1.0 24 100% Mod 0.67 276 1.3 25 100% Mod 0.96 400 2.1 31 100% Mod 0.28 316 0.9 32 100% Mod 0.80 241 0.5 33 100% Mod 0.40 439 0.9 34 100% Mod 0.33 174 8.8 35 100% Mod 0.50 224 7.7 36 100% Mod 0.70 413 1.0 37 100% Mod 0.31 230 1.2 38 100% Mod 0.06 134 0.7 41 100% Mod 0.79 146 1.0 42 100% Mod 0.05 102 0.7 43 100% Mod 0.31 293 1.4 44 100% Mod 0.22 192 1.4 45 100% Mod 0.18 214 1.3 46 100% Mod 0.14 119 0.7 47 100% Mod 0.14 119 0.8 61 100% Mod 0.27 219 0.4 62 100% Mod 0.32 258 2.7 63 100% Mod 0.13 121 3.6 64 100% Mod 0.42 123 0.8 65 100% Mod 0.21 145 2.1 66 100% Mod 0.38 245 1.0 67 100% Mod 0.48 405 0.6 68 100% Mod 0.71 349 2.1 69 100% Mod 0.11 237 0.4 71 100% Mod 0.11 96 5.0 - 16.73 306.67 1.43 78.56 During Construction > 78.56 After Construction 92.42353 EFFECTIVENESS CALCULATIONS PROJECT: Gom' Sarrar0-q n v i /k? STANDARD FORM B COMPLETED BY: eor qn Hail -el DATE: Ia { Erosion Control C-Factor P-Factor Method Value Value Cominent o��h�n Sai •� . RO 9 /barn Sol /OGyjiGh�ll� Sutlraenr �v�;a/Tir,� 1100 o.�p Rc aalt/Conn oa 0,0( 1,00 PefVji2S �L 1usr reliczetyr-icr 1.4p 0,`Q Cnl-et Proyd:TlOr0.I.O Strcv Oales �so 1rydm-rlub 00 60�o Esrab, Gr- Gr4,s,3 l'a0 MAJOR PS SUB AREA BASIN BASIN (Ac) CALCULATIONS 7�, 5 I 3 4d I.5 ? ecf, I G = CI.S?X 04�fi 0.3i X 0-4ii- I-11x0 r0-t0-sfx r•lJ.%3.41- C= G.IS P— 0.� �0• sxCp.3�` x p- vo +- 3.0 6'Y I 4�� ,�� El��. CI—P.yxU.15 KId0�014 G7:,CO-S�cor+O.G�xI�0.09x0.1��s3 P� Q.�x0.,5-xCd,4�xp,D9�Q.�+�x�.0a��•y� 07�; MARCH 1991 B-15 DESIGN CRITERIA EFFECTIVENESS CALCULATIONS PROJECT: Goaa' samara gn I/ilfi7'9c, STANDARD FORM B COMPLETED BY: Hailey DATE: IO c // Erosion Control C-Factor P-Factor Method Value Value Cominent o� h�na sai qp - q 1 00ra Sol I-aeoloirq, ge�wlr/(ono o46B. 0,01 1,00 Fkiloer Silt faac:, RNr-ior- -0 f 1.60 P� Cnk-t iioleGTiOn 11.dp 0, P mow eQ leS 0-M I4ydra-r )t)/Uh 01 1,00 Co% ESrg6, 01-Gr4,SS o.Pc r.a0 MAJOR PS SUB AREA BASIN ($) BASIN (Ac) CALCULATIONS 2e. (crush Say ► - Q_1 �-Rc -04 C=�0,1jxo,ol r P 0S+O.��xcp,�o C=Q. , q OFF= CI -O-�X�,3�kloa= �l MARCH 1991 8-15 DESIGN CRITERIA EFFECTIVENESS CALCULATIONS PROJECT: crow'somol-1TAh hill(.(-, STANDARD FORM B COMPLETED BY: _ 6'1-j qn IyaiJey DATE: rG 0 Erosion Control C-Factor P-Factor Method Value Value Comment aau�bf'14 sall q0 - 1777 bora Sol 1-,p RovT,7/rrV 1,pp o.5-0 .rcdimenr "q11-/Cone o4D8. 0,01 1,00 Silt rejll�� r3arl-iOr -p 1,60 01 Cnlrt ProteorrOY! 110 Strain 0OQles .j0 ,Q� 14ydra-rlUl�k 0 1.00 c 0 % Esrgb, or ovc �.a0 MAJOR PS SUB I AREA BASIN (%) BASIN (Ac) CALCULATIONS Es7- 'Gass— P.a1�4G O.Ojf- 0.3�X 0.0�tP.9�y.1.0�/1.�! =0,7� P:: olh0.5(61.100,9 l-J/,�tl P=0.37 FFF-/�/? y 7 � �Sr- crgSS-a.�y R� C= CO.Q>x0al� 0. Vol) J/D- �� S� MARCH 1991 B•15 DESIGN CRITERIA EFFECTIVENESS CALCULATIONS PROJECT: Goaa'samarfl-9 n 11 i 114jri STANDARD FORM B COMPLETED BY: 6'e-jgn Hail -el DATE: �d Q Erosion -Control C-Factor P-Factor Method Value Value Comment o� hen Sai ° q0 qr 60ra Soil IDuyhalr SodiMenidvsml)-fap r100 O.SO Qc,Avlt-/GinG oaPe. 0,01 1.00 - x, �; h L ,;,peg vi, vs Silt Fa; &frrior" -Q f 1.60 01 Cnlrt Prorc&TiOn 1.00 0. 0 Srrov OQ leS 0 �(7 U,°g li,dia- i"1U,�vh 1.00 60� Esr•ab. 0� G�r�s,S o.o� f.Q'p MAJOR PS SUB AREA BASIN (%) BASIN (Ac) CALCULATIONS s 0-a)- lc, Grgss-0,6��� 4�oush Sa%l — 0.67 ft� G= (o.0�xl.ao-r o,a�XO•ort-0. �7XO:o�a qr P= a•�+o 3 I 0.1-� Fst Grocs — a- dsi�c o�.glL'7, X�C0.13YC,�0 �OCs�i!0��,���(0•frk0.5+01� MARCH 1991 8.15 DESIGN CRITERIA EFFECTIVENESS CALCULATIONS PROJECT: GOav'so'glQ%Ii-on 11il/as", STANDARD FORM B COMPLETED BY: 6'i-(Qn /Laj/4/ DATE: I / -22 Erosion Control C-Factor P-Factor Method Value Value Cominent po,�5hnn4 Sall q0 9 ! 00r0 5,0i 1-avh f cty Sca'lMeni- Bvr;n/T'io� 1-00 0. Sp 9c vlt/r one o46e, 0,01 1,00 Q �x,'S7-h T-)it e(VGt{S Silt fap;:� ,Qnrrr�r" 0 1 0, r7 Cnlrt PrOfe;.Tfon 1.0a p.�0 Straw Qa /,cs I.y I4ydra -- i^) p ,loh o,I 6 1.00 E0%Estgb, er Gr�rsS 0•P� , p0 MAJOR PS SUB AREA BASIN BASIN (Ac) CALCULATIONS -d5-C 0,eo Es7l�- Grrrsc— G,l�ff G ' -y1.�; �3 0 If0 Esq Gr,7 s L kPxla of/L- EFF:6-0-3��0-��x100� 7003(70 MARCH 1991 8-15 DESIGN CRITERIA EFFECTIVENESS CALCULATIONS PROJECT: Goad -s'an,ar(7gn STANDARD FORM B COMPLETED BY: DATE: Erosion Control C-Factor P-Factor Method Value Value Cominent o�5 her . Sai .o .q0 ^ 9, oara soil navy - ry 01 S�dimu4r /in rrcr� 1100 0,r0 RC1411-1 ana Aw. 0.01 1.00 T )ve(vfR;rc Jc Silt faiic;Y, kyrn'cir" I.bp D, p Cnk-t ProlecT(On 1.0 o a, is mov 6a las 1.0Q 0-so ldydra-i"7uli� 0-10 1.00 6A, b. Or Grass 0.05 1•a0 MAJOR PS SUB AREA BASIN M BASIN (Ac) CALCULATIONS 0.K %% i Ro�� So;l— 0-�-7�-0• ;' I P= G? 5 yo ejc�oa;�x0 I SFr-� ��—P•?srQ_��Xl�v'� �'Ii;�9la 35 �'au9h s�Ii� 0.►�3ya �y=F- cl- -2 MARCH 1991 B-15 DESIGN CRITERIA EFFECTIVENESS CALCULATIONS L✓ PROJECT: GOaa' SlYmq/ iigN j/; //q�G STANDARD FORM B COMPLETED BY: B`jgh /{aj/may DATE: Q . Erosion Control C-Factor P-Factor Method Value Value Comment o hen Sai a 90 q l barn Sol 1-av#orq, S u;Ment�v�r�/trey I-00 o.so 0, 1 1. o - �x,'Sr L �u�oe��,GUF Silt re.),Cc, darrior" ' 160 O 111 Cq /rt 101-01C*TlOh j . dp 0. �0 Stray 4a IcS p 0.s0 14ya'ia-I"1ul�N, e.i6 j.00 G0� Esrg6, 0, I.00 MAJOR PS SUB AREA BASIN BASIN (Ac) CALCULATIONS l 7e'sc 7,� sC l - a �� G = 0,�3 0,50, q4-o.l3xip��0.�� ' Rou9� Sail - 0J5-Ac 1 0 MARCH 1991 8-15 DESIGN CRITERIA EFFECTIVENESS CALCULATIONS PROJECT: Govq's'amarAn STANDARD FORM B COMPLETED BY: 6,/1 Qn Hail -el DATE: Erosion Control C-Factor P-Factor Method Value Value Cominent oj hen sal ' c10 9 / tiara Soil/,, yV n 0V sodimcnr /2,ni /rrap 1100 0.570 Rc,Avlr/Conn ogke, 0,0( 1.00 7 1igoei IV,G;.rS silt F-eact, anrri(�r- -Q f I. bO 01 Cnk-r lqrola; T-fon I'.00 0. j0 moi OQ kS (� 0.8o Ifydia-Y1u (,Gt 0 1.00 600 Es�g6, Or GosS Q'0� ► 00 MAJOR PS SUB AREA BASIN (%) BASIN (Ac) CALCULATIONS .0 00.0>� X 1.0� is Oar C=1,�/0 �'— 0.,S�p2X�Px10`�/OAS' P-013�c ZFF--����fVr�U)�l(/�,� �} I 79 zfr�s7 Ir�F- 0-►�y� Es tab Gray-; — 0,09 40U,94 Sa, - 0- 5 3 MARCH 1991 8-15 DESIGN CRITERIA EFFECTIVENESS CALCULATIONS PROJECT: Goao'sa oul-; � q n. P l(QiG STANDARD FORM B COMPLETED BY: DATE: Erosion Control C-Factor P-Factor Method Value Value Cominent R'no4cP4 so/ ,.o q0 q i barn soi l0 hGn�l%r Sm,enr"13nr,7/rr/,00 o.5-0 gr1Aa1t/Bono ogpe. 0.01 1.00 -- S7;h) T 1,1�oej Vt�Q' Silt faj,�� anrri0r" J 1.60 0, q Cnitt PrateonrJn 1.00 0.8 Strav 0Q (eS 1.0Q 0.s0 I4ydra- rjUIv1', o,t 0 1.00 CA ESrgb, Or Gr�isS 0 0� ► a0 MAJOR PS SUB AREA BASIN BASIN (Ac) CALCULATIONS �G s� eta- 00,� Ror�yh sniff-Oosf� C~ 1.00 l°= p•F-XO"pY(0.OS)(0. 9%GOB oz,a,3� EFF��—(,✓0x0,�krov� �� 43 0, 3 r 'Fsrryb Grass — �. 4L 4vh So;/_ D.l �0 r �0 Y0-�xCP.17x0,91O1 tg/�/ MARCH 1991 9.15 DESIGN CRITERIA EFFECTIVENESS CALCULATIONS PROJECT: GOO�i SalJ7Q/ (7a h //i llQ,9", STANDARD FORM B COMPLETED BY: 6'/-ign DATE: �O �6 �Q Erosion Control C-Factor P-Factor Method Value Value Comment o hen sai �-b •90 � 9� ara Sa; �ouyhan�l� Sunlenr rap t 00 a.sp 9e,A)v1t/Cone oa68. 0,0 Silt Fc,l�� %��rr/rL'l� 1,00 — �x.S� Z nyoe(V,ars Cnlr-r ProtC&TfOn b0 Stra Q Qks I.Do 6. 0 o.1l/ I4ydra-�"1Ulvk, �00 0%Esr,7b, 0r- Gass 0,q 1•a0 MAJOR PS SUB AREA BASIN (%) BASIN (Ac) CALCULATIONS 4 Rauch Sail — O,I��� G =(0 C 013 5 ° �� �sta� �� 0 Lf 14G C 01,w --0,1' l �CF - (1,0,?>f 0 1 MARCH 1991 8-15 DESIGN CRITERIA 1 1 i 1 1 1 EFFECTIVENESS CALCULATIONS PROJECT: cove 90mao.-I q n P, //Gljc, STANDARD FORM B COMPLETED BY: &r ¢n Zl ajley DATE: 1 Erosion Control C-Factor P-Factor Method Value Value Comment o hCn4 Sai 9 p A! tiara 30i l lDuyhGn�l� mcnt 12osr,7/r�� 1100 0.5-0 Qe di-Ic'no p468. 0,01. 1,00 Silt ,Arricr - 1.60 91 Cnlef Proic T'lon 1,00 0, 0 Strov/ QQkS Q 0-s0 14,1&1 i"lp�vf 0,I 1.00 60% ESrg6, 01-0,q /.go MAJOR PS SUB AREA BASIN (%) BASIN (Ac) CALCULATIONS s� 6 0 �� CstoS Gass— G?�3.4� Ra-ugy Soll - 0:/ I�G G=�Q,G3 k0:0v f61)014,4 C= 0, xd.�><C� 1��aaa3��p> o-, `� ,Fstgb Gass _ D•0��� A136 0.0('4G G= ((9, 0 0 L,;,c v'el K(I ? x�, ; f� 0��0& 0rjo 2,;1, MARCH 1991 8-15 DESIGN CRITERIA EFFECTIVENESS CALCULATIONS PROJECT: GOac� st7,g7ar1 q N Pi licoG STANDARD FORM B COMPLETED BY: O 1- Q n dail-ey DATE: Erosion Control C-Factor P-Factor Method Value Value Cominent R0u0e?14 sal°061,q0 - qi bare soil�Ouyf'th�q! Scct;r;cni �u�;�/rlc,� 1,0p o.so 9c��it/Cono o4GB. 0,01 1.00 L 717t2( I/ v2fS Silt Cpkt J J 0, Etroul OQ I eS O. eo Ifyq'!v-y"rp1pG; 0.1� (.00 CA) Estg6, o(f Gass 0,g �.a0 MAJOR PS SUB AREA BASIN BASIN (Ac) CALCULATIONS 61 0,)-2 f lilT Tmjo —0 ROO 3411— Q.I,? P= 0,5xa,��o,1�xo,gtoo9 N70 Ga- O �Z �st47 G�a�s -0.09 xG �(0'0 u,ocPp.1��a.3y C o.74 MARCH 1991 8.15 DESIGN CRITERIA EFFECTIVENESS CALCULATIONS PROJECT: Goad Samaria N �l4JC�i STANDARD FORM B COMPLETED BY: 6'/-i%gn Had -el DATE: 0 Erosion Control C-Factor P-Factor Method Value Value Comment potobfP4 Sall q0 — G l 00ra soi �Ocr�s Scdir�enr��s;�/rT,y 1100 o.5-0 gclAgltlConc, Pake. 0,0( koo Silt evricvr -✓. 1,60 01 mov Og Fes 0.M 14,1 ciia - Yj:j.!0 0 1 U 1,00 6 A Estgb, 0( G(as,S MAJOR PS SUB AREA BASIN (pp%) BASIN (Ac)) CALCULATIONS jr-mp—(20111-c �5fi7b Gr�lss- OO�t fj� 3cd- P= 04 Fs tab / mik sai I - 0") 9 C= a-7i P-0,3� MARCH 1991 B-15 DESIGN CRITERIA EFFECTIVENESS CALCULATIONS PROJECT: Gom'sawl-1; ah �ittC?JLCi STANDARD FORM B COMPLETED BY: _ 6'/j¢ry Hail-7y DATE: , Erosion Control C-Factor P-Factor Method Value Value Comment Ro�bc,n4 Sall r•a (�. qp 9 i bare so+ �OGyiiGH�c/ oajmenr 4inTi Af 1-00 0.5-0 , %Aq/t1c0n& Aw, 0,0( 1.00 - �x,'sr,3 Z,:,�oe�V,;X ' Silt Fa%r aVrfi(�r" I.60 0- p Cnl-c-r prole "ton Stray Qal<,S I�.OQ 0-M li1�fcl-Y�iU16vv, V.IQ 1,0� 60� Esrgb, or Gass o•P� a0 MAJOR PS SUB AREA BASIN (%) BASIN (Ac) CALCULATIONS ' Csr�b ��rrss—✓.�� 9� /joGty h SPi l GI I'fi AG �= Q�rdS k p.r�tKp�q�pn� X o1105-4-0-�- G-a-r {f�y� So,/ - G,19 �9G 5'i(t fence Gs.��i0/edI —D,Pi/{G ��Or9x0•Gt t oq �g x6VIx4%fG,r -0,s 14," S5Z► 70 MARCH 1991 8-15 DESIGN CRITERIA EFFECTIVENESS CALCULATIONS PROJECT: GOOA� sanlQri Ah l it%C�Ci STANDARD FORM B COMPLETED BY: DATE: Erosion Control C-Factor P-Factor Method Value Value Cominent o� hen ILI ,.o . q0 - q l tiara Soil rDUytiGn�� Scdri�cnr/�os /ra',� l,pp a,50 vit/Cono Pa Silt /dlyrril r 1.60 01 0 Cnlrt PrA*T-104 1'. ov D. 0 Stro�v OgIeS p 020 Nydi✓-�lu.ls; 0.16 1.40 G0� Esrgb, or Gress a,q 1.66 MAJOR PS SUB AREA BA( BASIN (Ac) CALCULATIONS I 5-,C 7 41sT Trap— 0.1C4( 2a�,5h Sar l — 0.3Z�� S/tc� 0057/� P- �l hV x109iz;7 79.9% Gg 0,7( 0Itc4c, 5 To 0i, o, 4oycTi C 0-6� d- 3� MARCH 1991 8-15 DESIGN CRITERIA EFFECTIVENESS CALCULATIONS PROJECT: G001i Spl7IQ/ i l q h I/i l�C7,9(i STANDARD FORM B COMPLETED BY: 6,/-iQn Hail -el DATE: S I Erosion Control C-Factor P-Factor Method Value Value Comment obenSai ' a q0 - 011 barn SOil n'ggi1Gs0v Sr�r/�cnr�o�;�/rra� 1-00 o.ro qc�v/t/�onc PQYe• 0,01 1,00 Silt F6h��'drrrri0r _0 J 1.bp 0, Cplct Prose ru7Y1 11 ao p.�0 S7rav 0Q /cs Hyo'ra-i"lo �%� 0 1.00 60% Esrgo, Or G(gss a-g �.a0 MAJOR PS SUB AREA BASIN (%) BASIN (Ac) CALCULATIONS f yis ` t epp = 0,10A %p3h Soil = Q 0/,G P�o40 /1�� Roush Soi/� 0.1/ c7: P=a,9 SFr- = C�-o•�FI.o�Xlaa� road Toltl F F �(9kX3.y>r 93.200.V-00.6W W,61 t N10,8(%fT37 -H5.1n4023n0-�O+Sf•14X033t 6'9.14Xd.'�0t6'9.1gY4�f�'9.S�c0.JlkC4�0,0�'i->y.�4x0.�9 �77,y,X 0 �`N- �r.3�Xo17 f?1✓iaJc 0,3� �->S.G�'Xo,13+T373J�G,4 MARCH 1991 8.15 DESIGN CRITERIA 1 1 1 1 1 1 1 1 1 1 1 1 1 P EFFECTIVENESS CALCULATIONS PROJECT: 94 ,join;"] ::,.ir %','li.a v STANDARD FORM B COMPLETED BY: Ho,,'44 DATE: 1 / Erosion Control C-Factor P-Factor Method Value Value Comment cos/'�c fJs `xil r/Bwl ' ;5 p, 01 / d 0 �O�OsG Zi��J P 04' rass E6fl&n(telb (6vAoj 0110 1.00 Se�'rrJ, Trap (fer) /,acr 0-50' Plaror MAJOR BASIN PS (%) SUB BASIN AREA (Ac) CALCULATIONS I 9),14 54 W/kyjr-o Seal G�Crss - 0.75 AG Sod, m- 7rgp - Lf-A C = (Q37 0,I0+ f-'t'+y)0 f- 0-xG.0013.�y c -: 0,0It p-0 so r%0cw. SP-al;m %i�p— 0-5mc, �Fl=� (I-0oit0-Sa�x�ad;99,5gs Tm�erv`0aa- sau� �2ro s — 0 3 MARCH 1991 8-15 DESIGN CRITERIA t EFFECTIVENESS CALCULATIONS PROJECT: ppr Qii,J.• �� (/aq� STANDARD FORM B COMPLETED BY: / j'i (j it%C�j i -= ..� DATE: Erosion Control C-Factor P-Factor Method Value Value Comment Concr6 I)sofclt/But n� ,.(1 1.00 �O�OSG L�slp G ��ss i-u0 Se,r�� �1u'lch Cl y�'ro) 0.1O 1.00 50J,171, Trq CPer� l-�U G 5J P�rmaneh� Warer QUQ�I�y S'1rbGv7U,r•Pi MAJOR BASIN PS SUB BASIN AREA (Ac) CALCULATIONS I R1_ �� �-a- a• �0 � mPer, — G•5's �G Low 97 S% Soar G�Qss— d'�q�r, �if see Tr��o ��a•a�, P=O,h�,F��=gg5�a Soo( Oresf - 6,0 5�0 ' MARCH 1991 8-15 DESIGN CRITERIA r EFFECTIVENESS CALCULATIONS PROJECT: Gooar Sa�vf i� is �r ! QJ� STANDARD FORM B 1 COMPLETED BY: DATE: Erosion Control C-Factor P-Factor Method Value Value Comment ConS(,o/d�li%Sj 0.0 I ,),00 ass �Op01G Lrsa� 0101 is q Eafli-"na(oh Cdya'roj 0.10 1-00 Se� 14, Try,,q 0-50 �'�rrbq/�847` G�/aroT MAJOR BASIN PS ($) SUB BASIN AREA (Ac) CALCULATIONS -, Q,pA Sod Gross- O.si,�G . Sc� 71 OFF= f 5jd Sock Gran - 0.�6'�G /ap- 0 kfo,4 , a,334, G=O,QIf (9 05a F�. S Sc� Trap � o• yd'¢G ------------- 3� �0 'Imprll-- s0� Grgc-o - p,� 19 S Trgp ` 0, �a9� ' MARCH 1991 8-15 DESIGN CRITERIA. U EFFECTIVENESS CALCULATIONS PROJECT: 6'0,4 Sgi{'![Tr i lq61 V'j IIQ.9(i STANDARD FORM B COMPLETED BY: DATE: Erosion Control C-Factor P-Factor Method Value Value Comment Conol�ic �spri!r/B!tl�!j 0.0 1 ),00 r,�OSG Lm� SA2' �asS 0-01 /. n 0' 0.10 1-00 Se�'�rJ, Trq� Cf'er� l-�C/ G5o' p�rrnonea� Darer QUG�i�/ S1i ��G�1!r'Pi MAJOR BASIN PS SUB BASIN AREA (Ac) CALCULATIONS T M p> r Saul Gr�sS- p,0 7f>zG Top - 0? 3� f,. ' Z er SeoT 5lG 779 �f 1 So� 9d TIvp— 0-Mcl O.O s L set u3 G>31 Troper= J, I-1A-G sod Grass-a!O�G OFF-9'7L MARCH 1991 8-15 . DESIGN CRITERIA EFFECTIVENESS CALCULATIONS PROJECT: GUJ t� Spy/:r/ ; ;' / //�/�'llq� STANDARD FORM B COMPLETED BY: DATE: 1 / 0-2 Erosion Control C-Factor P-Factor Method Value Value Cominent Conr,lY%//f4spfw / of li, j 0.0 1 ).00 �OpOSG tn��J S� Urc�ss 010 r l.17 a Ee161&l c( Cl yyroJ 0.16 1.00 50ifn, T q C�er) l-y✓ 0-50, MAJOR PS SUB AREA BASIN (%) BASIN (Ac) I 1 7-.-4 - 1 141-f I G11;1� © i 'iC I c) 4 q 1? 10 P+ Quality s1rv,0Tq(-,c1 CALCULATIONS ter.- 0. Sad ni vP - a �U -rmNer— 013 /�� Saar Gran s — 0,0s,4-6, 0.1e,4, L r a It 4, Soa�GrGss- Daj?ff-C '/lc/ FFF:- ' MARCH 1991 8-15 DESIGN CRITERIA t, EFFECTIVENESS CALCULATIONS PROJECT: Oo' pjIIVC� STANDARD FORM B COMPLETED BY: ,Qr .,qrl lice l-T4 DATE: Erosion Control C-Factor P-Factor Method Value Value Comment ConG1Ylc�flsp�rlt/Bui,�r�j 0.0 1 1.00 �OPosG Lr.I�J Sor( lr�ass 010 I I-ae Se����u(�h C6ya'roJ 0.10 1-0o Irl, Trap CA") l-oU G 5d &1'ra017Pt lyarcr MAJOR PS SUB AREA BASIN BASIN (Ac) CALCULATIONS So�Gr�ss' — c/, ►1 %fG Sect 0.-j>IG Sep l rcIp - 0, c, 64 Sod ? �s' d IIO�ri Trap i Or 1' I/A G/aDill, ' MARCH 1991 B-15 DESIGN CRITERIA EFFECTIVENESS CALCULATIONS PROJECT: ara0• S ,, / (71ii �� STANDARD FORM B '. ,r • Ur �j� COMPLETED BY: / �(- ; DATE: OQ Erosion Control C-Factor P-Factor Method Value Value Comment Conc/Y�c�f/SpEGI 0.0 1 )-00 �OpOSG L,;,FJ Sod brass 0101 i-n p. Set✓ 4-6107 Cl ydre� 0.10 1.00 Se �rl, Trq Cfer) /-00i OYU klarar aUCl�T/ SrrblG7!/,I MAJOR PS SUB AREA BASIN (%) BASIN (Ac) CALCULATIONS 7; %w,per-- 0, f`t,.-a 514 6-1 C=0.0! �,lo0i cf`l"= ('1"aolK�aa�xr,��-Py�o rotq EFG.= 3.�f�./C gee-I'.a0x�9-Sf�nx��i _ ' MARCH 1991 9-15 DESIGN CRITERIA CONSTRUCTION SEQUENCE PROJECT: GQ.'4 STANDARD FORM C ' SEQUENCE FOR -19 a:X/ ONLY COMPLETED BY: Pat( Ir DATE: OI Indicate by use of a bar line or symbols when erosion control measures will be installed. 'Major modifications to an approved schedule may require submitting a new schedule for approval by the City Engineer. YEAR MONTH OVERLOT GRADING i WIND EROSION CONTROL Soil Roughening Perimeter Barrier Additional.Barriers Vegetative Methods Soil Sealant Other tAINFALL EROSION CONTROL i ; STRUCTURAL: Sediment Trap/Basin Inlet Filters Straw Barriers Silt Fence Barriers Sand Bags Bare Soil Preparation Contour Furrows Terracing i i Asphalt/Concrete Paving Other VEGETATIVE: Ars"CGy as Permanent Seed Planting Mulching/Sealant Nec Sgrl Temporary Seed Planting Sod Installation Nettings/Mats/Blankets Other v ISTRUCTURES: INSTALLED BY VEGETATION/MULCHING CONTRACTOR IL MAINTAINED BY ATE SUBMITTED APPROVED BY CITY OF FORT COLLINS ON ' MARCH 1991 8-16 DESIGN CRITERIA APPENDIX `B' SEEDED SOILS INFORMATION U. S. DEPARTMENT OF AGRICULTURE SOIL CONSERVATION SERVICE 2 110000TEET k 90 49 1 55 �E 9 54 90 �fi: <.. ._..� wnv-�.:tS63 , , . ,.48 . ^`/' . ^ ` 89�0 4 90 90 90 q9 r 90 91 54-_ 96 65 a 55 80 65 r . r� a 53 49 ._. \./5�'� 36 36. 90 49 �" 631r. ,48 106 90 -74 in 74 t%.../. __34 }3� .y, ,65 ..�••i. i`:, n 74 i ,' 74 119 \ 65-��55'' Y'f"5 Y.0 A'F t' x F 74 SSm' 36 36 4 t 1 II ., 420 16 - = loi _7a.: s3; k J ..- rE[r �7i 36 90 y- 63 .�/ 1 r Tbfi r '6' . xc r y �' r' S4 119 3 65 go 66 36 89 35 �• 63 a 27 10$� 89,195 a 90 119 91 90 91 90 89 49 65 0 _. 37..,, o 2 74. � 95 '49 I90 i , c "89 •95 i 27 -74 s R TMA M ORI 900 r 48 89 119 ,95.1 49 36 75 ..36 7 91 -9(f'� 53 ,' 95 49 96 .. 113 103 ti y96.,.�' , + ti•.101 35 65'90 - 74 y yrJl �{ z S 21 54 n - ( 271 49 r i(rY�i 54 35 4 » ..A• °o Gy r 54 .90 0 49 i 6'I tit 90 :t `'-.s �' .37. r < 1 ; c 55 's.j♦ 1 �,�+• :`: ''.�i i th ki i '11 � r �53 li 35 31 9jt. a 54 :.� 54 54 ., ; _. z;v'• , �w�4 Ng`3�i r M,�( 34 XT U. S. DEPARTMENT OF AGRICULTURE SOIL CONSERVATION SERVICE SYMBOL NAME I -- Altvan loam, 0 to 3 percent slopes 2 Altvan loam, 3 to 9 percent slopes 3 AltvamSalanta loans. 0 to 3 percent slopes 4 Altvan Satanta loans, 3 to 9 percent slopes 5 Aquepts, loamy- 6 Aquepts. ponded' 7 Ascalon sandy loam. 0 to 3 percent slopes 8 Ascalon sandy loam. 3 to 5 percent slopes 9 Ba nvole Epping sill loams. 5 to 20 percent slopes 10 Bainville Keith complex. 2 to 9 percent slopes I I Bailer Carnero complex. 9 to 35 percent slopes 12 Bailer Rock outcrop complex, 15 to 45 percent slopes 13 Blackwell clay Ioant. 0 to 5 percent slopes 14 Boyle gravelly sandy loam, 3 to 9 percent slopes 15 Boyle gravelly sandy loam. 9 to 30 percent slopes 16 Boyle Ratake gravelly sandy loams. I to 9 percent slopes 17 Boyle Rdlake gravelly sandy Ipams. 9 to 25 percent slopes 18 Breece coarse sandy loam, 0 to 3 percent slopes 19 Breece coarse sandy loam, 3 to 9 percent slopes 20 Breece coarse sandy loam. 9 to 30 percent slopes 21 Camero loam. 3 to 9 percent slopes 22 Caruso Clay loam, 0 10 1 percent slopes 23 Clergern tine sandy loam. 2 to 10 percent slopes 24 ConnenomBarnum complex. 0 to 3 percent slopes 25 Connedom Barnum complex. 3 to 9 percent slopes 26 Cushman fine Sandy loam. 0 to 3 percent slopes 27 Cushman line sandy loan. 3 to 9 percent slopes 28 Diggs loam, 0 to 3 percent slopes 29 Dnggs loam. 3 to 25 percent slopes 30 Elbeth Moen loams. 5 to 30 percent slopes 31 Famut loam. 2 10 10 percent slopes 32 Farnuf Boyle -Rock outcrop Complex. 10 to 25 percent slopes 33 Fluvaquents. nearlylevel- 34 Fort Collins loam, 0 to 1 percent slopes 35 Fort Collins loam. 1 to 3 percent slopes 36 Fort Collins loam, 3 to 5 percent slopes 37 Fort Collins loam, 5 to 9 percent slopes 38 Foxcreek loam. 0 to 2 Percent slopes 39 Gapo clay loam. 0 to 5 percent slopes 40 Garrett loam, 0 to I percent slopes 41 Garrett loam. I to 3 percent slopes 42 Gravel pits 43 Haploborolls Rock outcrop t Onnplex.steep- 44 Hapluslolls. hilly- 45 Haplustolls Rock outcrop complex. steep' 46 Harlan line sandy loam. I to 3 percent slopes 47 Harlan fine sandy loam. 3 to 9 percent slopes 48 Heldt clay loam, 0 to 3 percent slopes 49 Heldt clay loam, 3 to 6 percent slopes 50 Keith silly clay loam. 0 to 3 percent slopes 51 Klidor clay loam, 0 to 6 percent slopes 52 Kildor Shale outcrop complex. 5 to 30 percent slopes 53 Kim loam. 1 to 3 percent slopes 54—Kin) loam, 3 to 5 percent slopes 55 Kim loam. 5 to 9 percent slopes 56 Kim-Thedalund foams. 3 to 15 percent slopes 57 Kufley loam, 3 10 9 percent slopes 58 K.nley Purner complex. 5 to 20 percent slopes 59 LaPorte Rock outcrop complex. 3 to 30 percent slopes 60 Lanni gravelly sandy loam, 5 to 40 percent slopes 61 Lanmer tine sandy loam. 1 to 3 percent slopes 62 Lanmer Stoneham complex. 3 to 10 percent slopes 63 Longmonl clay, 0 to 3 percent slopes 64 Loveland clay loam. 0 to 1 percent slopes SOIL LEGEND SYMBOL NAME 65 Midway clay loam, 5 to 25 percent slopes 66 Mmnequa silt loam, 3 to 9 percent slopes 67 Minnequa-LaPorte complex, 3 to 15 percent slopes 68 Miracle sandy loam, 5 to 25 percent slopes 69 - Naz sandy loam. 1 ro 3 percent slopes 70 Naz sandy loam, 3 10 25 percent slopes 71 Nelson fine sandy loam, 3 to 9 percent slopes 72 Newlork sandy loam, 0 to 3 percent slopes 73 Nunn clay loam. 0 to 1 percent slopes 74------ Nunn clay loam, I to 3 percent slopes 75 Nunn clay loam, 3 to 5 percent slopes 76 Nunn clay loam, wet. I to 3 percent slopes 77 Otero sandy loam, 0 to 3 percent. slopes 78 Otero sandy loam, 3 to 5 Percent slopes 79 Otero sandy loam. 5 to 9 percent slopes 80 Otero Nelson sandy loam, 3 to 25 percent slopes 81 Paoli line sandy loam, 0 to 1 percent slopes 82 Pendergrass Rock outcrop complex. 15 to 25 percent slopes 83 Pinata Rock outcrop complex. 15 to 45 percent slopes 84 Poudre fine sandy loam, 0 to I percent slopes 85 Purner fine Sandy loam, 1 to 9 percent slopes 86 Purner Rock outcrop complex. 10 to 50 percent slopes 87 Retake Rock outcrop complex, 25 to 55 percent slopes 88 Redlcalher Sandy loam. 5 to 50 percent slopes 89 Renohill Clay loam, 0 to 3 percent slopes 90 Renohill clay loam, 3 to 9 percent slopes 91 Renohill Midway clay loan.., 3 to 15 percent slopes 92 Riverwash• 93 Rock outcrop 94 Salanta loam, 0 to 1 percent slopes 95 Salanta loam. 1 to 3 percent slopes 96 Satanta loam. 3 to 5 percent slopes 97 Satanta loam. gulped. 3 10 9 percent slopes 98 Salanta Variant clay loam, 0 to 3 percent slopes 99 Schofield Redleather Rock outcrop complex. 5 to 25 percent slopes 100 Stoneham loam. 0 to 1 percent slopes 101 Stoneham loam. 1 to 3 percent slopes 102 Stoneham loam. 3 to 5 percent slopes 103 Stoneham loam. 5 to 9 percent slopes 104 Sunshine stony sandy loam, 5 to 15 percent slopes 105 Table Mountain loam. 0 to I percent slopes '106 Tassel sandy loam, 3 to 25 percent slopes 107 Thedalund loam. 0 to 3 percent slopes 108 Thedalund loam. 3 to 9 percent slopes 109 Thiel gravelly sandy loam. 5 to 25 percent slopes 110 Tine gravelly sandy loam, 0 to 3 percent slopes 111 Tine cobbly sandy loam, 15 to 40 percent slopes 112 Trag Moen complex. 5 to 30 percent slopes 113 Ulm clay loam, 0 to 3 percent Slopes 114 Ulm clay loan. 3 10 5 percent slopes 115 Weld silt loam, 0 to 3 percent slopes 116 Wetmore.Boyle Moen complex. 5 to 40 percent slopes 117 Wetmore -Boyle -Rock outcrop complex, 5 to 60 percent slopes 118 Wiley silt loam, 1 to 3 percent slopes 119 Wiley silt loam, 3 to 5 percent slopes "Broadly defined units. LARIMER COUP CUL BOUNDARIES National, sta: County or pa Minor civil di Reservation I slate fores and large Land grant Limit of soil Field sheet m AD HOC BOUNI Small airport, cemetery, . STATE COORDI LAND DIVISION (sections and I. ROADS Divided (met, if scale pen Other roads Trail ROAD EMBLEM' Interstate Federal State County. farm I RAILROAD I POWER TRANS. (normally not PIPE LINE (normally not FENCE (normally not LEVEES Without road With road With railroad DAMS Large (to sca Medium or 5 inches. Sand and gravel are below a depth of 40 riches in some profiles. Some profiles have substrata th a redder hue. 3—Nmin clay loam, 0 to 1 percent slopes. This level soil is on high terraces and fans. This soil has a profile similar to the one described as representative of tseries, but the combined thickness of the surface � I er and subsoil is about 35 inches. ncluded with this soil in mapping are small areas of soils that are more sloping. Also included are a few all areas of Satanta, Fort Collins, and Ulm soils and < ew small areas of soils that have a surface layer and subsoil of silty clay loam. Runoff is slow, and the hazard of erosion is slight. �If irrigated, this soil is suited to corn, sugar beets, flans, barley, wheat, and alfalfa. Under dryland nagement it is suited to wheat or barley. It is also suited to pasture and native grasses. Capability units —1, irrigated, and IIIe-1, dryland; Clayey Foothill e sit e,k- suitabilityr —Nmm clay loam 1 to 3 ercent slo This nearly eve sor rs on high terraces an ans. This soil Ii the profile described as representative of the es. ncluded with this soil in mapping are a few small areas of soils that are more sloping or less sloping and qffewimall areas of soils that have a surface layer and soil of silty clay loam. Also included are small areas c, Satanta, Fort Collins, and Ulm soils. Runoff is slow to medium, the hazard of wind erosion light, and the hazard of water erosion is moderate. If .irrigated, this soil is suited to corn, sugar beets, bans, barley, alfalfa, and wheat. Under dryland management it is suited to wheat and barley. It is also �11 suited to pasture Br native grasses (fig. 10). i clay loam, 1 to 3 percent slopes. LARIMER COUNTY Capability units IIe-1., irrigated, and IIIe-6, dryland; Clayey Foothill range site; windbreak suitability group 1. 75—Nunn clay loam, 3 to 5 percent slopes. This gently sloping soil is on high terraces and fans. This soil has a profile similar to the one described as rep- resentative of the series, but the combined thickness of the surface layer and subsoil is about 24 inches. Included with this soil in mapping are small areas of soils that are more sloping or less sloping and a few small areas of soils that have a surface layer of light clay. Also included are a few small areas of Satanta and Ulm soils. Runoff is medium. The hazard of water erosion is moderate, and the hazard of wind erosion is slight. If irrigated, this soil is suited to barley, alfalfa, and wheat and, to a lesser extent, corn, sugar beets, and beans. Under dryland management it is suited to wheat oi• barley. It is also well suited to pasture and native grasses. Capability units IIIe-2, irrigated, and IIIe-7, dryland; Clayey Foothill range site; windbreak suit- ability group 1. 76—Nunn clay loam, wet, 1 to 3 percent slopes. This nearly level, somewhat poorly drained soil is on low terraces and alluvial .fans, commonly adjacent to drainageways. This soil has a profile similar to the one described as representative of the series, but a seasonal high water table is at a depth of 20 to 30 inches during part of the growing season. Included with this soil in mapping are a few small areas of soils that have a strongly alkaline surface layer and a few small areas of soils that are moderately well drained. Also included are a few areas of soils that have a surface layer of loam or clay and a few — areas of soils that are -less sloping. — Runoff is slow, and the hazard of erosion is slight. This soil is suited to pasture and hay. If the water table is lowered by management practices, corn, sugar beets, wheat, and barley can be grown. Capability unit IIIw-1, irrigated; Vet Meadow range site; windbreak suitability group 5. Otero Series The Otero series consists of deep, well drained soils that formed in alluvium and wind -deposited material. These soils are on alluvial fans and terraces. Elevation ranges from 4,800 to 5,600 feet. Slopes are 0 to 15 percent. The native vegetation is mainly blue grama, needlegrass, bluestenis, and some forbs and shrubs. Wean annual precipitation ranges from 13 to 15 inches, mean annual air temperature ranges from 48' to 50' F, and the frost -free season ranges from 135 to 150 days. In a representative profile the surface layer is brown sandy loam about 4 inches thick. The underlying material is pale brown sandy loam about 13 inches thick over light brownish gray sandy loam. . Permeability is rapid, and the available water ca- pacity is medium. Reaction is mildly alkaline above a depth of about 4 inches and moderately alkaline below that depth. These soils are used mainly for native grasses and for dryfarmed crops. A few areas are used for ir- rigated crops. i Y I feet north of the southeast corner of the NEI/I. sec. 36, T. 8 N., R. 69 W.: ' Ap-0 to 7 inches; light yellowish brown (2.5Y 6/3) loam, olive brown (2.5Y 4/3) moist; moderate fine and very fine gran- ular structure; soft, very friable; cal- careous; mildly alkaline; clear smooth boundary. C1-7 to 13 inches; pale yellow (2.5Y 7/3) loam, olive brown (2.5Y 4/3) moist; weal: me- ' - dium prismatic structure parting to weak medium subangular blocky; hard, friable; calcareous; moderately alkaline; gradual smooth boundary. ' C2-13 to 40 inches; pale ,yellow (2.5Y 7/3) loam, olive brown (2.5Y 4/4) moist; massive; slightly hard, very friable; calcareous; moderately alkaline; clear smooth boundary. C3-40 to 60 inches; light yellowish brown (2.5Y 6/3) loam, olive brown (2.5Y 4/3) moist; massive.;, slightly hard, very fri- able; calcareous, moderately alkaline. lThe A horizon is fine sandy loam, loam, or light clay oam 5 to 12 inches thick. The C horizon is loam or light clay loam. It is calcareous but lacks a zone of ime accumulation in most profiles. Sandstone bedrock s below a depth of 40 inches in some profiles. 53—Kin loam, 1 to-3 percent slopes. This nearly level soil is on uplands and fans. This soil has a profile imlar to the one described as representative of the feiii,'es, but the surface layer is about 12 inches thick. cluded with this soil in mapping are a few small areas of soils that are more sloping or less sloping, a ew small areas of soils that have a surface layer of clay loam, and a few small areas of soils that have gravel on the surface. Also included are a few small areas of Fort Collins and Stoneham soils. A water table is within the root zone for part of the growing 'season in a few areas. Runoff is slow. The hazard of water erosion is slight, and the hazard of wind erosion is moderate. If irrigated, this soil is suited to corn, sugar beets, ;'beans, wheat, barley, and alfalfa. Under dryland man- agement it is suited to pasture or native grasses and, to a lesser extent, wheat and barley. Capability units i IIe-1, irrigated, and IVe-3, dryland; Loamy Plains >,ran ite windbreak suitability group I. 4—Kim loam 3 to 5 percent s opcs This gently r sloping soil is on upTan s anc fans. I`his soil has a r profile similar to the one described as representative 'of the series, but the surface layer is about 10 inches t thick. Included with this soil in mapping are small areas 1 of soils that are more sloping or less sloping and small areas of soils that have a surface layer of clay loam. rA water table is within the root zone during the grow - a Ing season in a few small areas. Also included are a t few small areas of Fort Collins, Stoneham, and Theda- lund soils. Runoff is medium, and the hazard of erosion is mod erate. t If irrigated, this soil is suited to barley, alfalfa, and wheat and, to a lesser extent, corn and beans. Under LARIMER COUN' dryland management it is suited to pasture and native grasses. Capability units IIIe-2, irrigated, and IVe-3 dryland; Loamy Plains range site; windbreak suit ability group 1. 55—Kim loan[, 5 to 9 percent slopes. This stronglN sloping soil is on uplands and fans. This soil has th( profile described as representative of the series. Included with this soil in mapping are small areas o; soils that have a surface layer and subsoil of clay loan - or silt loam and a few small areas of soils that have gravel on the surface. Also included are minor areas of Stonehama,nd Thedalund soils. Runoff is rapid, and the hazard of erosion is severe. If irrigated, this soil is well suited to pasture and, tc a lesser extent, barley, alfalfa, and wheat. Under dry - land management it is suited to pasture and native grasses. Capability units IVe-1, irrigated, and VIe-1; dryland; Loamy Plains range site; windbreak suit- ability group 1. 56—Kim-1'liedalund- loans, 3 to 15 percent slopes. This complex consists of gently sloping to moderately steep soils on uplands, fans, and valleysides. It is about 45 percent Kim loam and about 35 percent Thedalund loam. Kim loam .is smoother and less sloping, and Thedalund loam is steeper. These soils have profiles similar.to the ones described as representative of their respective series, but the surface layer is about 4 or 5 inches thick. '. , Included with these soils in mapping -are a few small I of Renohill and'Midway soils, a few small out- crops and gravel knobs, and some small seep spots. Runoff is rapid, and the hazard of erosion is severe. These soils are mainly used for pasture andnative grasses. Capability unit VIe-1, dryland; Loamy Plains range site; windbreak suitability group 1. Kirtley Series The Iiirtley series consists of moderately deep, well drained soils that formed in material weathered from reddish brown sandstone and shale. These soils are on uplands and side slopes and are underlain by soft shale at a depth of 20 to 40 inches. Elevation ranges from 5,600 to 6,400 feet. Slopes are 3 to 15 percent. The native vegetation is mainly blue grama, side -oats grama, western wheatgrass, yucca, and rabbitbrush. Mean annual precipitation ranges from 15 to 18 inches, mean annual air temperature ranges from 47' to 50' F, and the frost -free season ranges from 115 to 130 days. In a representative profile the surface layer is red- dish brown loam about 4 inches thick. The subsoil is reddish brown heavy loam about 14 inches thick. Be- low this is light reddish brown loam about 8 inches thick that is underlain by soft sandstone and shale. Permeability is moderate, and the available water capacity is medium. Reaction is mildly alkaline. These soils are used mainly for native grasses. Representative profile of Kirtley loam in an area of Kirtley-Purner complex, 5 to 20 percent slopes, in native grass, 70 feet south of access Toad in sec. 14, T. 10 N., R. 70 W.: A1-0 to 4 inches; reddish brown (5YR 5/3) 'loam, dark reddish brown (5YR 3/3) 1 Table 11-1 Recommended Species and Application Rates of Perennial Dry Land Grass Seed for Fort Collins, Colorado. Drilled"' Mature Pounds of Height Species Variety"' PLS/Acre Season"' (in) Form Type SANDY AND SANDY LOAM SOILS (1/2 inch to 1 inch)"' ' Sand bluestem Elida, Woodward 19.8 Warm 48 Sod Native Sideoats grama Switchgrass Vaughn, Butte Grenville 10.9 Warm 15 Bunch Native Prairie sandreed Goshen 5.6 8.0 Warm Warm 30 48 Sod Sod Native Little bluestem Blue grama Pastura 8.4 Warm 24 Bunch Native Native Pubescent wheatgrass Lovington Luna 3.0 21.8 Warm Cool 12 30. Bunch Native Sod Introduced ' LOAM, SILT LOAM, SANDY CLAY LOAM, LAY LO R SILTY Fairway wheatgrass CLAY LOAM SOILS (114 to 3/4 inches)"' Crested wheatgrass Nordan 7.2 11.5 Cool Cool 12 12 Bunch Introduced , ��-Western wheatgrass Arriba, Barton 19.8 Cool 12. Bunch Sod Introduced Pubescent wheatgrass Luna 21.8 Cool 30 Sod Native✓ —��Sideoats grama Vaughn or Butte 10.9 Warm✓ 15 Bunch Introduced Native✓ —.Blue grama . Lovington y Grenville 3.0 5.6 Warm✓ Warm/ 12 Bunch Native✓ 'aSwitchgrass Smooth brome Manchar or Lincoln 16.1 Cool 30 24 Sod Sod Native/ .— Little bluestem Pastura or Camper 8.4 Warmvl 24 Bunch Introduce Green needlegrass Lodorm 12.1 Cool 24 Bunch Native Native CLAY, SILTY CLAY OR SANDY CLAY SOILS (1/4 inch to 1/2 inch)"' - Fairway wheatgrass 7.2 Cool 12 Crested wheatgrass Critana 11.5 Bunch Introduced Cool 12 Intermediate wheatgrass Amur, Oahe 24.8 Cool 30 Bunch Sod Introduced ' Western wheatgras Arriba, Barton 19.8 Cool 12 Blue grama Sod Introduced Native Lovington 3.0 Warm 12 Smooth Brome Manchar or Lincoln 16.1 Cool 24 Bunch Native Green needlegrass Lodorm 12.1 Cool 24 Sod Introduced Bunch Native (1) For most species, other suitable varieties are available. (2) PLS = Pure Live Seed. Drilled rates are for slopes 4:1 or less and favorable topsoil. seed on 4:1 or smaller slopes will -be doubled Broadcast rates of , ' the drilled rates. For slopes greater than 4:1, will be four times the drilled rates. broadcast rates (3) See Table 11-4 for planting dates. (4) Values within parenthesis- represent depths seed is to"be drilled into the soil. ' MARCH 1991 11-2 CONSTRUCTION STANDARDS