The URL can be used to link to this page

Browse Search

Home My WebLink About20221389.tiffri PLANNED UNIT DEVELOPMENT (PUD) CHANGE OF ,ZONE APPLICATION FOR PLANNING DEPARTMENT USE DATE RECEIVED: RECEIPT # /AMOUNT # 1$ CASE # ASSIGNED: APPLICATION RECEIVED BY PLANNER ASSIGNED: Parcel Number Cam' _j _ - (12 digit number - found on Tax I.D.information, obtainable at the Weld County Assessor's Office, or (Include allots being included in the application area. If additional space is required, attach an additional sheet.) i •,cE. a Legal Description Section, Township North, RangelG West Property Address (If Applicable) fu g/.3 (../t)['74L/ Existing Zone District: Proposed Zone District: Total Acreage: f, Proposed #/Lots: Acres Open Space: Are you applying for Conceptual or Specific Guide? ri Conceptual ® Specific FEE OWNER(S) OF THE PROPERTY (If additional space is required, attach an additional sheet.) Name: S\-)ctun Work Phone # 00 Home Phone # Email Address i.03�n.v.z. CD("- Address: /381.5 City/State/Zip Code C4-�,(;() APPLICANT OR AUTHORIZED AGENTISee Below: Authorization must accompany applications signed by Authorized Agent) Name: .3 O44 t �� f� 30O i t t y Work Phone # tIO Home Phone # Email Address (�' \,cz5 Address: /38/,-?� �� ( mc�; t �_ . City/State/Zip Code a C G -(e UTILITIES: Water: x)wei Lvr Sewer: e)11- 3 t f -e - Gas: 4) 4-c). ea ca. Electric: x' �. Phone: __-- DISTRICTS: School: -1-0 fk. Post: I (We) hereby depose and state under penalties of perjury that all statements proposals, andlor plansbwith contained within the application are true and correct to the best of my (our)knowledge. Signatures of all fee owners of property must sign this application. If an Authorized Agent signs, a letter of authorization from all fee owners must be included with the application. If a corporation is the fee owner, notarized evidence must be included indicating the signatory has the legal authority to sign for the corporation. I (we), the undersigned, hereby request hearings before the Weld County Planning C.* mission and the Board of County Commissioners concerning the proposed Change of Zone for he 4bove, escrib�e. nincorporated area of Weld County, Colo +o: Signature:, n r or Authorized Agent Date Signature: Owner or Authorized Agent Date l -7- Summary of concerns during sketch plan 1) I understand that a cul-da-sac is the appropriate turn around that is needed. 2) I understand that the road to the cul-da-sac and the cul-da-sac need to be paved. LA i 4 .4 1% I - i I,_,'I �,� t � ::,1_,-�_ • • A. Intent. The intent of Component One is to identify and isolate any possible impacts the proposed use may have upon the environment on the site, as well as on neighboring sites. B. Duties of the Department of Planning Services. The Department of Planning Services, in conjunction with personnel from the Public Works and Department of Public Health and Environment, will be responsible for reviewing the potential environmental impacts presented by the PUD development. The Department of Planning Services will utilize the development guide for assessing each of the following environmental impacts. The applicant shall submit an explanatory statement as to how the PUD development will plan for and accommodate the following impacts: 1. Noise and vibration. Will only be the typical noise associated with building a house. 2. Smoke, dust and odors. There will not be any of these concerns. 3. Heat, light and glare. There will not be any of these concerns. 4. Visual/aesthetic impacts. The visual will be two houses fitting in with the neighboring houses. 5. Electrical interference. There will be no electrical interference during or after construction. 6. Water pollution. There will be no contamination to any water source. 7. Wastewater disposal. The only wastewater concern is after the 2 homes are built. They will have onsite septic systems. 8. Wetland removal. There is will not be any wetland removal concern. 9. Erosion and sedimentation. The project will not cause any of these concerns. 10. Excavating, filling and grading. This will be typical to the envelope of a new house. There will be nothing done outside of this area. 11. Drilling, ditching and dredging. There will be no need for any of these actions. 12. Air pollution. There is no concern for air pollution. 13. Solid waste. There will not be any solid waste being produced. 14. Wildlife removal. There is no wildlife needing to be removed. 15. Natural vegetation removal. Natural vegetation will remain. 16. Radiation/radioactive material. There will not be a concern for this. 17. Drinking water source. NWCWD will supply the water. 18. Traffic impacts. There will be no traffic impact. • COFFEY ENGINEERING : SLLRVEYI \ C; June 28, 2021 Ms . Melissa King Weld County Engineering Department 1111 H Street Greeley, Colorado 80631 RE : 13813 Weld County Road 74 Drainage Analysis Memo 13813 Weld County Road 74, Weld County, Colorado 80615 Coffey Project No . 2821 . 00 Dear Ms . King : The purpose of this memo is to address expected drainage impacts from the proposed improvements, including a 3 , 500+ 112 residence and gravel driveway to the site located at 13813 Weld County Road 74 . The site is situated in Section 32, Township 7 North, Range 66 West of the 6th P . M . in the County of Weld, State of Colorado. The site is bound to the north and east by residential properties, to the south by CR 74, and to the east by an oil/gas site . (see vicinity map in the appendix) . The site is 15 .23 acres and is currently zoned as A (Agriculture), which is being changed to P. U . D. (Planned Unit Development) . The existing site consists of a gravel access road, a residence, and several out-buildings. The site is covered with native vegetation that drains to the southwest to the roadside ditch of CR 74, which directs runoff west through multiple culverts to an existing storm sewer inlet located north of the Wood Lakes Farm access . From the existing inlet. runoff is directed south under CR 74 to a swale that drains to Woods Lake. Due to the concrete irrigation channel located east of the site, it is not anticipated that any offsite flows enter the site. According to the NRCS soils map survey, the native soil consists of Kim Loam (United States Department of Agriculture Type "A") soils . These soils have a high infiltration rate when thoroughly wet. The site is located within the FEMA Firm Map Panel 08123C 1225E but is outside of the FEMA floodplain and floodway (see FEMA Firm Map in the appendix) . The proposed site improvements include construction of a 3 , 500+ ft2 residence and gravel driveway. Runoff will generally follow historic drainage patterns, flowing southwest into the roadside ditch . The site imperviousness was taken from Table 6-3 Recommended Percentage Imperviousness Values. COFFEY ENGINEERING, LLC (970) 622-2095 4045 ST CLOUD DRIVE , SUITE 180 LOVELAND, COLORADO Page 2 Table 1 — Existing and Developed Conditions basin Flows Comparison Y , , Bash flows "(cfs} a r t o a S �. '9f'. . .'.1 1 R- I 15. 23 7 . 2% 0. 21 12 .41 15. 23 7. 9% 0. 22 13 . 23 Peak flows were calculated using the Rational Method for the 100-year storm event. This method uses the local 1 -hour rainfall depth and Figure 3 - 1 Intensity- Duration-Frequency to calculate peak discharge as a function of the time of concentration . Stormwater will follow historic flow patterns, draining to the southwest corner of the site. Due to the site ' s proximity to an existing lake, the capacity of the roadside ditch, and the minimal increase in peak discharge, detention is not being recommended for this site . The proposed improvements cause the WSEL in the ditch to raise 0 .02 ' , with a freeboard of 1 . 58 ' . Water quality will be provided by grass buffers before runoff enters the roadside ditch . If you have any questions or require additional information, please call Coffey Engineering at (970) 622-2095 . Sincerely, COFFEY ENGINEERING & SURVEYING , LLC _ v�D0 Lice; is �y \ It revyniff , 56 32 of • %i ski.. Ramsey J . Pickard , tit;0NAL •. �v ••....•• � '- Project Manager ��G= Attachments — Vicinity Map Soil Map FEMA FIRM Map Panel 08123C 1225E Table 6-3 Recommended Percent Imperiousness Table 6-5 Runoff Coefficients Figure 3 - 1 Intensity-Duration-Frequency Rational Method Calculations Ditch Capacity Calculations Drainage & Erosion Control Plan COFFEY ENGINEERING , LLC (970) 622-2095 4045 ST CLOUD DRIVE, SUITE 180 LOVELAND, COLORADO 1 II). ' µz S ;Plc 44 t r i. • ir -44 \ . ik ,.• ... i t. ......„..., .. .. s 1 .,,, iti _ . . �. s:, SITE lior. 1: i � , . ., . , #ii.. .. ..,.. ,...,,ki: s,_ . .... ..... , i. -4 10 0: • ti-switaii \IP . . . . . _ . . - AIL } - 1. t . • ill ,:i," -if -..„ . i. :I .0 ,, . . . . . : _ . .,, iltiabilit , . . y . . ____ .. „ ., . - 1 7,. 1 �. , • it i - • • t, R r r • k1 \ % .41 jilt . .• y _ '• •-i ... " - 7 •-77;17"4•-.4-...-c7.. 4 k7..e Y 4 . .ice►_. "'3' rl'Sti✓ I II • \ • • a- t r 16 , J 1 4. fr • • N 2 Soil Map—Weld County, Colorado , Southern Part I V F. Q O rl 516970 51 /U.20 517070 517120 517170 517720 517270 51rizu 40° 31' 39" N 40° 31' 39" N l, -NM , 4 r F 4. ••'v,, . I t. . • • i I es' .4- 9 VVV V : • air , .4. I "r f p lib` ' ��' r ' e P ' 6. •} JY^ . 7 1 ' I I St — _ i lit. . j C I 'F . .. 4 _ , . , c. ..,....i. .:11. .: .-- — c . Fl A r. Y !. ' rs 4 ill , i I%•4 Y. r t 4 r V -7M2+ 4i. 21711 aB $ ai 0 County' Road�74 __ ink __ .— 74 -- - - - --- -- - _______ y� .�� .•S,:d.. -y.. ♦ - . M `sows tl-. ..�.M1y wy�.�•IY_NJ1•i. Sr® il Mgap Gray h©t be valid at tthtig3 SCa 0GD 0 " mir'"r:4 , 40° 31' 24" N 40° 31' 24" N 516970 51 Nal 517U7U 517120 517170 51 /Z U 51 r2/u 51 rSzu on R Map Scale: 1 :2,310 if printed on A portrait (8.5" x 11'{) sheet. N : - Meters $ N 0 30 60 120 180 S --)Feet 0 100 200 400 600 Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84 USDA Natural Resources Web Soil Survey 6/17/2021 Conservation Service National Cooperative Soil Survey Page 1 of 3 Soil Map—Weld County, Colorado , Southern Part MAP LEGEND MAP INFORMATION Area of Interest (AOI) Spoil Area The soil surveys that comprise your AOI were mapped at Area of Interest (AOI) 1 : 24 ,000 . Stony Spot Soils Very Stony Spot Warning : Soil Map may not be valid at this scale . Soil Map Unit Polygons Wet Spot Enlargement of maps beyond the scale of mapping can cause 0 Soil Map Unit Lines misunderstanding of the detail of mapping and accuracy of soil Other line placement. The maps do not show the small areas of O Soil Map Unit Points contrasting soils that could have been shown at a more detailed • - Special Line Features Special Point Features scale . (f_,) Blowout Water Features Streams and Canals Please rely on the bar scale on each map sheet for map A Borrow Pit _ measurements . Transportation tt Clay Spot Rails Source of Map : Natural Resources Conservation Service Closed Depression Web Soil Survey URL : Interstate Highways Coordinate System : Web Mercator (EPSG : 3857) Gravel Pit US Routes Maps from the Web Soil Survey are based on the Web Mercator Gravelly Spot projection , which preserves direction and shape but distorts Major Roads distance and area . A projection that preserves area , such as the T. Landfill Local Roads Albers equal-area conic projection , should be used if more Lava Flow accurate calculations of distance or area are required . Background Marsh or swamp Aerial Photography This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Mine or Quarry Soil Survey Area : Weld County, Colorado , Southern Part Miscellaneous Water Survey Area Data : Version 19 . Jun 5 , 2020 Perennial Water Soil map units are labeled (as space allows) for map scales Rock Outcrop 1 : 50 ,000 or larger. Saline Spot Date(s) aerial images were photographed : Jul 19 , 2018—Aug 10 , 2018 Sandy Spot The orthophoto or other base map on which the soil lines were Severely Eroded Spot compiled and digitized probably differs from the background imagery displayed on these maps . As a result, some minor Sinkhole shifting of map unit boundaries may be evident. Slide or Slip Sodic Spot W a \ Natural Resources Web Soil Survey 6/ 17/2021 al Conservation Service National Cooperative Soil Survey Page 2 of 3 4 Soil Map—Weld County. Colorado, Southern Pad Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 24 Fort Collins loam , 0 to 3 0 . 1 0 . 5% percent slopes 32 Kim loam , 1 to 3 percent 14 . 6 99 . 5% slopes Totals for Area of Interest 14.7 100.0% t ti► ) \ Natural Resources Web Soil Survey 6/17/2021 ■e Conservation Service National Cooperative Soil Survey Page 3 of 3 National Flood Hazard ,R,FIRM ette ,4.:,• FEMA Legend g 104°48111 "W 40°31'40"N SEE FIS REPORT FOR DETAILED LEGEND AND INDEX MAP FOR FIRM PANEL LAYOUT -* I , •r. .` . •;*r. :a ,c.. = ' r� sik • Without Base Flood Elevation (BFE) ,�,� Lo„e A, V, A : SPECIAL FLOOD With BFE or Depth • life AL AU AH. VL, AR or HAZARD AREAS Regulatory Floodway 0.2% Annual Chance Flood Hazard, Areas t ire #11 .. 1111 I of 1% annual chance flood with average depth less than one foot or with drainage areas of less than one square mile Future Conditions 1% Annual I Chance Flood Hazard Area with Reduced Flood Risk due to OTHER AREAS OF Levee. See Notes. {_ FLOOD HAZARD Area with Flood Risk due to Levee zone o lliTAN R661N 532 4- Y, r 111, 'ice Ha I NO SCREEN Area of Minimal Flood Hazard 7,,,,f. X • • -• - - I I Effective LOMRs «•+ .�'"or H OTHER AREAS Area of Undetermined Flood Hazard ki... 'itt- �.. , - III . e. a ..- . — - - -GENERALChannel, Culvert, or Storm Sewer n e a STRUCTURES 1111111 Levee, Dike, or Floodwall AREA OF MINI MAL FL 0 0 D HAZARD 20.2 Cross Sections with 1% Annual Chance " ' 17.5 Water Surface Elevation WEED CO 1 8 Coastal Transect Ili 0g��6� - -^�- ij- - Base Flood Elevation Line (BFE) O V ___ Limit of Study * . - alaillielle , - -- Jurisdiction Boundary a 7ws ..► _ 4% •trrz r "-znrk•-& --- --- Coastal Transect Baseline T6N R�6VW ' .1""ila . - _-„Ltrieler- OTHER I - Profile Baseline • z OS12C1225E ' 5= • • FEATURES . , '' -- Hydrographic Feature }`Q�M •eff . 1/20/2016 y Digital Data Available N -• lip A �� No Digital Data Available MAP PANELS Unmapped iT � The pin displayed on the map is an approximate point selected by the user and does not represent ,, an authoritative property location. • T6N R.66W SS This map complies with FEMA's standards for the use of one A digital flood maps if it is not void as described below.\ t The basemap shown complies with FEMA's basemap • , , accuracy standards The flood hazard information is derived directly from the • authoritative NFHL web services provided by FEMA. This map was exported on 6/ 17/20 2 1 at 5:07 PM and does not reflect changes or amendments subsequent to this date and ti. time. The NFHL and effective information may change or i become superseded by new data over time. .11 This map image is void if the one or more of the following map ill% I 1 , . III elements do not appear: basemap imagery, flood zone labels, legend, scale bar, map creation date, community identifiers. '" 11 FIRM panel number, and FIRM effective date. Map images • U1 Feet 104°47'34"W 40°31' 13"N unmapped and unmodernized areas cannot be used for 0 250 500 1 , 000 1 . 500 2 . 000 1 6 ' 000 regulatory purposes. Basemap: USGS National Map: Orthoimagery: Data refreshed October, 2020 6 Runoff Chapter 6 Table 6-3. Recommended percentage imperviousness values Land Use or Surface Charactenstics Percentage Imperviousness (%) Business: Downtown Areas 95 Suburban Areas 75 Residential. Single-family 2 5 acres or larger 12 0 75 — 2 5 acres 20 0 25 - 0 75 acres 30 0 25 acres or less 45 Apartments 75 Industrial. Light areas 80 Heavy areas 90 Parks, cemeteries 10 Playgrounds 25 Schools 55 Railroad yard areas 50 Undeveloped Areas: Histonc flow analysis , 2 Greenbelts, agricultural 2 Off -site flow analysis (when land use not defined) 45 Streets: Paved 100 Gravel (packed) 40 Dnve and walks 90 Roofs 90 Lawns, sandy soil 2 Lawns, clayey soil 2 6-8 Urban Drainage and Flood Control District Urban Storm Drainage Cntena Manual Volume 1 January 2016 7 Runoff Chapter 6 Table 6-5. Runoff coefficients, c Total or Effective % Imperviousness NRCS Hydrologic Soil Group A 2-yr 5-yr 10-yr 25-yr 50-yr 100-yr 2% 0 02 0 02 0 02 0 02 0 02 0 17 5% 0 04 0 05 0 05 0 05 0 05 0 19 10% 0 09 0 09 0 09 0 09 0 1 0 23 15% 0 13 0 14 0 14 0 14 0 14 0 28 20% 0 18 0 19 0 19 0 19 0 19 0 32 25% 0 22 0 23 0 24 0 24 0 24 0 36 30% 0 27 0 28 0 28 0 28 0 29 0 4 35% 0 31 0 33 0 33 0 33 0 33 0 44 40% 0 36 0 37 0 38 0 38 0 38 0 48 45% 0 4 0 42 0 42 0 42 0 43 0 52 50% 0 45 0 47 0 47 0 47 0 48 0 56 55% 049 051 052 052 052 06 60% 0 53 0 56 0 56 0 57 0 57 0 64 65% 058 , 06 061 061 062 068 70% 0 62 ' 0 65 0 66 0 66 0 67 0 72 75% 067 07 071 071 071 076 80% 0 71 0 74 0 75 0 76 0 76 0 8 85% 076 ' 079 08 08 081 084 90% 08 084 085 085 086 088 95% 085 088 089 09 09 092 100% 0 89 0 93 0 94 0 94 0 95 0 96 Total or Effective % Imperviousness NRCS Hydrologic Soil Group B 2% 002 002 014 024 038 046 5% 0 04 0 05 0 17 0 27 0 39 0 48 10% 009 1009 021 03 042 05 15% 0 13 { 0 14 0 25 0 34 0 45 0 53 20% 0 18 1 0 19 0 29 0 37 0 48 0 55 25% 022 1023 033 041 051 058 30% 027 ' 028 037 044 054 06 35% 0 31 0 33 0 41 0 48 0 57 0 63 40% 036 037 045 051 06 065 45% 0 4 0 42 0 49 0 55 0 63 0 67 50% 0 45 0 47 0 53 0 58 0 66 0 7 55% 0 49 0 51 0 57 0 62 0 69 0 72 60% 053 056 061 065 072 075 65% 0 58 0 6 0 65 0 69 0 75 0 77 70% 0 62 0 65 0 69 0 72 0 78 0 8 75% 067 07 073 076 081 082 80% 071 , 074 077 079 084 085 85% 0 76 10 79 0 81 0 83 0 87 0 87 90% 0 8 1 0 84 0 85 0 86 0 89 0 9 95% 085 088 089 09 092 092 100% 0 89 0 93 0 94 0 94 0 95 0 94 6-10 Urban Drainage and Flood Control District Urban Storm Drainage Criteria Manual Volume 1 January 2016 LIDSTONE a ANDERSON , INC . 1994 ( BASED ON NOAA ATLAS , 1973 8 9 rammumrsammaammummopmemmormmummammorem mom min EllISOWEIEN EIMENEINE MEEMEMMEOMMOTOEMEMEOMONEEMEEMMEMME Om mill • pmmommommmilmmommmommm mmlinn alum � ..t�.MO � C.. .■.COmENE �. .. ..C o ■CCC ,. ACC .... �.� C ■MIMEO■ NE ��■ i EmEMEINMEOEM NOW =i �i ��i= iii �s �E�iI Ii�i�i=si iN��■ mmormin■i Irma��■ �S �� ■fie ��■lm mmm mina ■■ME �� A�■ ■ i n EMEMEMMWIEMMENWOHNOMEENEEEEEMEEMEEMEE EEMMEEMEEIMEEEFFEIENNEME ME NE MOMMMOMM! rimmmommumppmmmmm MMOMMMOMM MMIMIniMmOmmmOMIMMOOM MOMMMs114 § IffiOMMOMMOMmEMEIMOMMNIMMIMMO EXEMOMONOMMOMPEONIM mmommmmmiwompigm gm 'MOM MEMMEMMEEMEM EMEMME MEMMEMSEEIS i MODEM OVEWIM am @NOMMOMMEMMMOMMEMEMEMMEMINIMMEMOOMMEMEM EINEEMMEE Et ommEEMEMBE E EMITEmmEEEEERENEVEEMBEEMEEEVEEMEN mmimmimmmommmimmkommmilimmmmommmm mm mummommmmommmimmimmmimm cLe 6 am mmilmmmommmiemmmammm mImmommImmom Immammimmmomm mm mll mm ■ ■ ■ fir■ ■1■3E mummiammemommemmlimmgmmpmmmmummmmmemmmmmmsmmpmmommismommmimm EMEOMEMOMMONIEME@MEESIENEMENEEEEEMMEE ■MEw■ it■■ t■MEE ■! uJ OE°- �i= DOEMEEENSEEMEMENEMME ME ��■■� ��i=ii�ii�► �i=ii�i�i=N�rE EiaEisii �iEEEEENEEEMMMEM �E■EES�E�� =�i �■ W 5 i �ii�' ■��■�■ =i��iii�t �� l�ri9112 r! r��=iiiIri t! 0 �OM,rn: Proposed 100-YR = 3 . 95 in /hr ■�^r sir. s �� t ■■ WSW' IMAM- x E MEE ME as �• "CCC: '�'::::�w":::=C'.�CCCCa:C=CSC= 'C::CC::.� "�':C'CME :f NEI 4 m�s��iii�o.u�m�i��iii�ti�ii��vi�iir�\m!■ m 11 ! ■ . s■ owmammo.�aannasssmammwmwmsas►omfsie�M■ ■ 1 ■ ■■ i■ RI Fe mmmommmilmiemmumommemigmmommommommmmommommmmummmmmem mop v �ghlk. Iremammowomumswomms nu RMIUMPIMMINIMMX ■ �a^�: Existing 100-YR = 3 . 88 in/hr 1 R0.aa�es�tE.M �iEMES. ■ist mini ��i��►��■t��■s��►`�ltEiR�� MM�� ■Kli�� , C��l1'��S��l�11`R � 3 ! �� Proposed 10-YR - 2 . 3 in/hr � � �• ��• �i�'`��■s !'��■ ■ ■ �ri��iiisO►a�■ ■.■.e a■..■.■ ■RC+�iEEMEMOMOOMWEEMEEMMIIMECNIMEEMO��a � �u��i=�i�■�e'�i:i�i=��`� v�sa� IENE NMEEN�i�mmommom��■��MesEE�t==i�i�■��e. rR�ENaOC��EEMO�M■�EM�i�■ BMOMmEIE MMIONEEENMEQUEEMEERMINEECIEMEMEIMIMMONEEMEENDIEMEEEEs�BER� t�mmmommmimm�i■ ioiiim��i�i��i�i�i�iwi=�I�i�i �i==��i=i��wiiiw ��a��ri�moi■o misminfammien nalimmisammaimummic,_ IN Ma iraiiinuallonnemimmaaintasii MraExistin . 10-YR = 2 . 5 in/hr dnillalla■ anniaf.a_. ■anmmammammummommmemmommammommismammmimmimmmummummadrann�C mmommImmemmommmommommommemmmomemmimscoommlmmmommmimmemmmgmm MIMEO EMEMEEENIMMEEMEENEMEEEMEHPSVEMMIrmiONINEEE EMEERE mm mpummpmmommmommmommommgmmommpogiusug limmumft.... mimpammppplpg I UnirMIIIIIMMAIIMIUMMUIMIMIRMIMPIIII mmtimmMEmmmEmmmEMMEEmmOMMEOMMOMM .. ..EMEEE . .. . . . . . . .. .... .... . . EM ::C�CC':"= : :CC'CCC=.C. ' ' ��:CCCCCCCC : 'CCEMEMENEEEM �C�'NEE =C: o to 20 30 40 50 60 . TIME IN MINUTES citY47- . INTENSITY-DURATION -FREQUENCY CURVES Greel e��° PUBLIC WORKS DEPARTMENT FIGURE 3- 1 Great. From the Ground Up. ST0RMWATER MANAGEMENT DIVISION SCALE : NTS 1001 NI,,,,, AVENUE GREELF,, COLORADO 80631 REVISED AUG 1996 Composite C Values 13813 CR 74 Total Area Minor ( 2 -YR) Major ( 100-YR) Design Point Basin (s ) Asphalt Area ( acres ) Concrete Area ( acres ) Gravel ( acres ) Roofs ( acres ) Lawns ( acres ) (acres ) Composite " C" Composite " C" ( Cf x C) Existing El Ell 0 . 22 1 0 . 01 1 . 02 0 . 20 1 13 . 78 1 15 . 23 0 . 07 0 . 21 Developed D1 P1 _ 0. 22 1 0 . 01 I 1 . 11 0 . 28 1 13 .61 1 15 . 23 1 0 . 08 0 . 22 Notes : C values obtained from Table 6-5 USDCM Table 6-5. Runoff coefficients, c Total or Effective % Imperviousness NRCS Hydrologic Soil Croup A 2-y r 5-yr 10-yr 25-yr 50-yr 1O( ►- yr 2% , 0.02 0.02 0.02 0.02 0.02 0. 17 I 5% 0.04 0.05 0.05 0.05 0.05 0. 19 10% . 0.09 , 0.09 0.09 , 0.09 0. 1 0.23 15% , 0. 13 0. 14 0, 14 0. 14 0. 14 0.28 20% 0. 18 0. 19 0. 19 0. 19 0. 19 0.32 gT 25% 0.12 0.13 0. 24 0. 24 0.24 O . ; t, 3" 0.27 0.28 0.28 0.28 0.29 ( l . .-1 35% 0. 31 0.33 0. 33 0.33 0. 33 0. 44 • 40% 0. 36 , 0. 37 , 0. 38 0.38 0.38 0.48 45% 0.4 0.42 0,42 0.42 0.43 0. 52 50% 0.45 0.47 0.47 0.47 0.48 I 0. 56 55% 0.49 0. 51 0. 52 0. 52 0.52 0.6 60% 0. 53 4 0. 56 , 0. 56 , 0. 57 I 0. 57 , 0. 64 65% 0.58 0. 6 0.61 0.61 0.62 0 . 68 . 70% 0.62 0.65 0.66 0.66 0.67 0. 72 I 75% 0. 67 0. 7 0. 71 0. 71 0. 71 0. 76 80°10 , 0. 71 0. 74 0. 75 , 0. 76 , 0. 76 0.8 85% 0. 76 0.79 0. 8 O . K 0. 81 0. 84 9(r/0 0. 8 0. 84 0. 85 I 1 . 8 S 0. 86 0. 88 95% 0. 85 i 0. 88 0. 89 ft ' ),) 0.9 0.92 100% 1 0.89 0.93 _ 0.94 _ 0.94 0.95 _ 0.96 RJP 13813 CR 74 Rational Method . xlsx 6/28/2021 CO Imperviousness 13813 CR 74 Asphalt Area ( acres ) Concrete Area ( acres ) Gravel ( acres ) Roofs (acres ) Lawns ( acres) Total Area Percent Design Point Basin ( s ) ( I = 100 ) ( I = 100) ( I = 40) ( I = 90 ) ( I = 2 ) ( acres) Imperviousness Existing El E1 ) . 22 0 . 01 i 1 . 02 0 . 20 1 13 . 78 15 . 23 7 . 2 % Developed D1 _ P1 0 . 22 1 0 . 01 0. 28 I 13 . 61 _ 15 . 23 7 .9% Notes : 'I-able 6-3. Recommended percentage imperiousness salmis Percent Impervious Values per Table 6-3, Urban Drainage Manual Land Use or Percentage Imperviousness Surface Characteristics (°Jo) Hu\mess: Downtown Areas 95 Suburban Areas 75 Residential: Single-family - 2.5 acres or larger 12 _ 0.75 - 2.5 acres 20 0.25 - 0.75 acres 30 0.25 acres or less 45 Apartments 75 industrial: Light areas 80 Heavy areas 90 Parks, cemeteries 10 Playgrounds 25 Schools 55 Railroad yard areas 50 Undeveloped Areas: Historic flow analysis 2 Greenbelts, agricultural 2 Off-site flow analysis (when land use not 45 defined) Streets: Paved 100 Gravel (packed) 40 Drive and walks 90 Roofs 90 Lawns. sandy soil 2 Lawns, clayey soil 2 RJP 13813 CR 74 Rational Method .xlsx 6/28/2021 O Basin Flow Calculations 13813 CR 74 Area Minor Major Initial/Overland Time Travel Time Final TC Intensity ( in/hr) Basin Flows (cfs) Design Point Basin (s) Minor toy Major tov Slope Velocity I Minor TC (acres) Composite "C" Composite "C" Length (ft) Slope (%) Length (ft) (%) Channel Type (fps)c tt ( min ) (min) Major TC (min ) 10-yr 100-yr 10-yr 100-yr (min)a (min)a Existing I1 El 15 . 23 0.07 0.21 500 1 . 00 1 43.07 37. 21 U 130 C1 \AJ 1 . 71 0.00 43 . 0 / 37.21 1 2.25 I 3.88 2.40 j 12.41 Developed D1 P1 15 . 2 3 0.08 i 0.22 SOU I . 00 42.65 36.80 0 I TO LW 1 . 71 0.0000 42.65 336.80 2.30 i 3.95 1 2.80 I 13.23 Notes: a 1 .87(1 . 1 — cc, )D" 2 t„, = sill b HM = Heavy Meadow, TF = Tillage/field, PL = Short pasture and lawns, BG = Nearly bare ground, GW = Grassed Waterway, PA = Paved Area ` Velocity alues from Figure 3-3/Table RO-2 Estimate of Average Flow Velocity for use with the Rational Methoc RJP 13813 CR 74 Rational Method.xlsx 6/28/2021 12 Channel Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc. Monday. Jun 28 2021 CR 74 Roadside Ditch - Existing Conditions Triangular Highlighted Side Slopes (z : 1 ) = 10 . 00 , 13 . 00 Depth (ft) = 0 . 80 Total Depth (ft) = 2 . 40 0 ( cfs ) = 12 . 41 Area ( sqft) = 7 . 36 Invert Elev (ft) = 4854 . 48 Velocity (ftls ) = 1 . 69 Slope ( % ) = 0 . 40 Wetted Perim (ft) = 18 . 47 N -Value = 0 . 030 Crit Depth , Yc (ft) = 0 . 60 Top Width (ft) = 18 . 40 Calculations EGL (ft) = 0 . 84 Compute by : Known Q Known Q ( cfs ) = 12 . 41 Elev (ft) Depth (ft) Section 4857 . 00 - - 2 . 52 4856 . 50 I 2 . 02 4856 . 00 I 1 . 52 4855 . 50 - - 1 . 02 1C7 , 4855 . 00 a - 0 . 52 4854 . 50 0 . 02 4854 . 00 — I — 0 . 48 4853 . 50 — 0 . 98 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 Reach ( ft) 13 Channel Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk. Inc. Monday, Jun 28 2021 CR 74 Roadside Ditch - Proposed Improvements Triangular Highlighted Side Slopes (z : 1 ) = 10 . 00 , 13 . 00 Depth (ft) = 0 . 82 Total Depth (ft) = 2 . 40 Q ( cfs ) = 13 . 23 Area ( sqft) = 7 . 73 Invert Elev (ft) = 4854 . 48 Velocity (ftls ) = 1 . 71 Slope ( °/o ) = 0 . 40 Wetted Perim (ft ) = 18 . 93 N -Value = 0 . 030 Crit Depth , Yc (ft) = 0 . 61 Top Width (ft) = 18 . 86 Calculations EGL (ft) = 0 . 87 Compute by : Known Q Known Q ( cfs ) = 13 . 23 Elev (ft) Depth (ft) Section 4857 . 00 1 2 . 52 4856 . 50 - 2 . 02 4856 . 00 1 . 52 4855 . 50 1 . 02 A 4855 . 00 0 . 52 4854 . 50 - 0 . 02 4854 . 00 - 0 . 48 4853 . 50 - 0 . 98 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 Reach (ft) 811 . . / . S \ PROPENT, LN[ �."1/4\-;;‘, ,,,�\ l f \ // K now what's below. ell Ex?INC FENCE Call before you dg. 6 . "ii. \ ; ,4J \ \ �/f `, / \ • \\v \ . 9. O ry 'J. :1. Y \ a ' � \ /- [XSIWG CON( -. A'. . f �/ LEGEND: m c �U of '' :� { tl ` \ `T — - - — PROPCRTV IOUNDARV W V 1 EYJSTNG SWALE 0 Q y -< .47 d ` 0 \ - Pt0POSCO STORM SEWER UNE (12' R UNDER) d a a EJ i I `�- PROPOSED STORY SEWER LINE 15. ! AIOK �' - CXIS ONG OU,-BUILQNG5 ( ) _ � - • F10STwc STORM SFMER I NF EXIS AIG ENCE �U/ �JJ EXISIIWG FMAJOR CONTOUR ' ‘ ••• [trot MINOR CONTOUR - \ _ ' -_. LnS"wG S..OPL -AIWA .A---- • — MO E DRAINAGE BAS% 3OUNDARY \ ANAGE IASA CAlLOUT f - \ t SO �C -HA9N 9A IA AC�T[S 8 RUNOFF VALUE < _ ` � a» ` 100YR COMPOSITE "C' VALUE i0K •) ,7 DESIGN PONT 15.23 AC. \ \ �.M ONLCIILOW 0.21 12.41 N.. OVERLAND FLOW t I / PROPOSED BASIN FLOWS o4 /�bJv I • , \ DAs* DE9GNATID4 ARI A •OYR 100YR CS.E 3A9V ro DE51fYE POTNT I. (AC) COMP Cow. (c s) (S)Chm 0 F..+ f T 1 O 1 1 • i, E, 15 23 007 0.57 2 12.41 �. Z F•i.� 1 P1 Pt + 15 23 ON 0.30 2-I0 13.23 Q 15.23 AC. G .� O I CAKING RESIDENCE 0. v j O.22 ' 3.23 w A it � .� z z En 3 i , ro P LINE '/ I Cx,;INC rENCC PROPER I I I 00 dilil en r c I I I /,-lif tx'S/t;t. P tcCI (44BSL; I, • I 1 ) 4 • • I • f ��! PP(WOSED GRAVE. ACCESS SS .. I / ` _. - 1 fxs"�� ENt — PRELIMINARY APPROwMA TE FOOTPRINT • I c a PROPosED aE9xNCE I NOT FOR CONSTRUCTION > - 06/28/21 I [ws1tNG GRAKt ACCESS EI G ', 4 , • 1 f ). - - Z I � 'h � r5 �- EwS11NC rENCE '1 �' ti. �' • •,; I. l o ,` \ -�c. ! , , DATING CONCRE TE G+ANNEL N Z p� O%\ ' O wEe N'Ll oat" \ ,i , . ; %\,‘, °Ts. s I �\,t hif33402 / . ,, - ,, w / ExeSUNG FENCE // ,1 L ♦) �.asn Iof a 30 o so I Do 1501E11 .IsdJ• - - . dii) W iii 1 ... x I --(M3Y1 t.r>T»+c FENCE - --- 1 NCh _ so r. { - I _ - - - - - - - - - - - - - - - -T - - - - - WELD COUNTY ROAD /4 PROPERTY LwE ..i DWG NAME r C-DR i earl•:r NO 1 0r I First Half Due as of 02/26/2021 Second Half Due as of 02/26/2021 Tax Biiled at 2020 Rates for Tax Area 5055 - 5055 Authority WELD COUNTY SCHOOL DIST RE2 NORTHERN COLORADO WATER (NC EATON FIRE AIMS JUNIOR COLLEGE EATON REC DISTRICT HIGH PLAINS LIBRARY WEST GREELEY CONSERVATION Taxes Billed 2020 * Credit Levy Weld County Treasurer Statement of Taxes Due AeeountNumber R4677207 _ ParceI07073240(1008 — ^ Legal Description Situs Address PT E2SE4 32-7-66 AMEND SUB EXEMPT AMDSE-I030 Account: 84677207 'BASILIERE WESLEY" .� 13813 COUNTY ROAD 74 EATON, CO 80615-8608 Year Tax Charge 2020 $3,830.78 $0.00 $0.00 $0.00 Total Tav ('EaroP ($1,915.39) $1,915.39 $1,91.5.39 Tax Adjustments Interest 13813 COUNTY ROAD 74 WELD Fees Payments Balance Mill Levy 15.0380000* 36.8210000* 1.0000000 9.0000000 6.3050000 4.4600000 3.1810000 0,4140000 Amount Values 5755.81 $1,850.63 $50.26 $452.34 $316.89 $224.16 $159.88 520.81 76.2190000 $3,830.78 AG -FLOOD IRRRIGATED LAND FARMIRANCH RESIDENCE -IMPS $0.00 $1,915.39 Actual Assessed $14,749 $4,280 $524,373 $37,490 OTHER BLDOS- $29,2'74 $8,190 AGRICULTURAL Total Weld County Treasurer's Office 1400 N 17Th Avenue PO Box 458 Greeley, CO 80632 Phone: 970-400-3290 $568,396 $50,"260 Pursuant to the }Held County Subdivision Ordinance, the attached Statement of Taxes Due issued by the Weld County Treasurer, are evidence of the status as of this date of all property taxes, special assessments, and prior tax liens attached to this account. Current year's taxes are due but not delinquent. Signer: Date: 2(0.2-021 Hello