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Home My WebLink AboutDrainage Reports - 07/01/1996FINAL DRAINAGE AND EROSION CONTROL STUDY FOR 3MONY MARKET P.U.D.,TWELFTH FILING FORT COLLINS, COLORADO Revised May 8,1996 FINAL DRAINAGE AND EROSION CONTROL STUDY FOR HARMONY MARKET P U D ,TWELFTH FILING FORT COLLINS, COLORADO 0 April 1996 Prepared for Bogaard Construction 5006 Blue Stem Court Fort Collins, Colorado 80525 Prepared by RBD Inc Engineering Consultants A division of the Sears Brown Group 209 South Meldrum Fort Collins, Colorado 80521 (970)482-6368 RBD Job No 673 003 1 :WINC ' Engineering Consultants A division of The Sear Brown Group 209 S Meldrum ' Fort Collins Colorado 80521 970/4 2 922 may 8 1996 1 Mr Basil Hamdan City of Fort Collins ' Utility Services Stormwater 235 Mathews Street Fort Collins, Colorado 80522 ' RE FINAL DRAINAGE AND EROSION CONTROL STUDY FOR THE HARMONY ' MARKET P U D TWELFTH FILING Dear Basil tWe are pleased to resubmit to you, for your review and approval, this Final Drainage and Erosion Control Study for the Harmony Market P U D , Twelfth Filing All computations within this report ' have been completed in compliance with the City of Fort Collins Storm Drainage Design Criteria All comments made by the Storm water Utility from the April 16, 1996 submittal have been addressed at this time We appreciate your time and consideration in reviewing this submittal Please call if you have any questions Respectfully, ' RBD Im Pr ared ' Jim Aller ' Project N ' cc 1 1 673-003(A) Correspondence H \USER\civil\projects\harmony 12t\harmktl2 rpt Reviewed by J David K Thaemert P E Water Resources Project Engineer ' Denver 303/458 5526 TABLE OF CONTENTS DESCRIPTION PAGE GENERAL LOCATION AND DESCRIPTION 1 Location 1 Description of Property 1 DRAINAGE BASINS 1 Major Basin Description 1 Sub Basin Description 1 DRAINAGE DESIGN CRITERIA 2 Regulations 2 Development Criteria Reference and Constraints 2 Hydrological Criteria 2 Hydraulic Criteria 2 Variances from Criteria 2 DRAINAGE FACILITY DESIGN 3 General Concept 3 Specific Details 3 Storm Water Quality 4 EROSION CONTROL 4 General Concept 4 Specific Details 4 CONCLUSIONS 5 Compliance with Standards 5 Drainage Concept 5 Storm Water Quality 5 Erosion Control Concept 5 REFERENCES 5 APPENDIX VICINITY MAP 2 HYDROLOGY CALCULATIONS 3 INLETS 9 EROSION CONTROL 14 TABLES AND FIGURES 20 EXCERPTS FROM FINAL DRAINAGE REPORTS for 24 HARMONY MARKET P U D SECOND AND THIRD FILING (pocket) 26 DRAINAGE AND EROSION CONTROL PLAN (pocket) 27 I FINAL DRAINAGE AND ' EROSION CONTROL STUDY FOR THE HARMONY MARKET P U D TWELFTH FILING ' FORT COLLINS, COLORADO ' I GENERAL LOCATION AND DESCRIPTION ' A ati n The Twelfth Filing of Harmony Market P U D is located south of Harmony Road ' between Boardwalk Drive and Lemay Avenue It can also be described as being immediately south of Harmony Road between the Red Robin Restaurant and the Outback Steak House More specifically, this site is located in the Northeast Quarter ' of Section 1, Township 6 North, Range 69 West of the 6th Principal Meridian, City of Fort Collins Lanmer County, Colorado ' B Description of Propea The existing Harmony Market P U D has been developed in several phases and ' contains the former Pace Warehouse, Builders Square, Steele's Market, First Bank, Taffy Lube, Lee's Cyclery, and several restaurants along the frontage of Harmony Road ' The Harmony Market P U D Twelfth Filing site contains approximately 0 65 acres ' and is currently undeveloped and is sparsely vegetated The site slopes gently ( 1 7%) from north to south The proposed purpose for the subject site is currently understood to be retail usage 1 II DRAINAGE BASINS A MaJor Basin Description ' The project site is located within the McClellands Basin No major drainage way exists within the Harmony Market P U D development or immediately downstream within the Oak/Cottonwood Farm site ' B Sub -Basin Description ' The Twelfth Filing of Harmony Market P U D lies within Basin A, as lard out in the 1 ' Harmony Market P U D Overall Drainage Plan, amended with the Third Filing of the P U D , also known as Steele's Market The Basin A catchment encompasses an area which contains a parking lot access road, two restaurants and a portion of Boardwalk Drive The completion of this project will fully develop Basin A (See Overall Drainage Plan, provided in the back pocket of this report) ' Detention for Basin A is provided by Pond A, which has had no modifications to its ' catchment area since the original Report - Harmony Market P.U.D. Filing One Final Total Site Preliminary Pond A provides a detention volume of 1 75 ac-ft and has a release rate of 17 cubic feet per second ' III DRAINAGE DESIGN CRITERIA ' A Regulations The City of Fort Collins Storm Drainage Design Criteria is being used for this subject ' site B Development Criteria Reference and Constraints 1 As stated earlier, flows from the site contribute to Detention Pond A in Basin A, shown on the Overall Drainage Plan for the Harmony Market P U D in the back ' pocket of this report The Harmony Market P U.D Overall Drainage Plan, amended with the Third Filing, Total Site Prelinunary report considered this site to be completely impervious This site is generally considered to be completely ' impervious with a coefficient of 0 95 C Hydrological Criterr ' The Rational Method is being used to determine run-off peak flows from the study site Rainfall criteria for this study was obtained from the City of Fort Collins and is included in the Appendix The 10- and 100-year rainfall criteria were utilized to ' determine the developed flows D Hydraulic Criteria 1 All calculations within this study have been prepared in accordance with the City of Fort Collins Drainage Criteria ' E Vanances from Criteria ' A variance for erosion control is sought The effectiveness during construction is 1 2 1 IV 1 1 1 72 9 during construction instead of the rainfall performance standard of 79 6 We feel that the measures provided will effectively prevent erosion transport to adjacent areas and any further measures are unnecessary DRAINAGE FACILITY DESIGN A General Concepi All Storm water off -site and on -site, will sheet flow to the north area inlet in Pond A' where flows will be detained and released As stated previously this flow contribution was expected and accounted for in the calculations for Pond 'A' Included in the back pocket of this report is the Drainage and Erosion Control Plan for Harmony Market P U D, Third Filing B Specific Details Off -site Storm water flows form the adjacent berm will be taken east around the back of the building in a trickle channel discharging to the parking lot then to a curb chase at design point 1 Then the offsite flows will cross the access road and parking lot to the north inlet of Pond A' I On -site stormwater is taken south to the north area inlet of Pond A' The roof areas of basins 1,2 and 3 discharge to the parking area at the front of the building Basin 1 includes a small strip of land at the back of the building which receives off -site flows from Basin 6 The storm water from this area is taken east around the building in a trickle channel to the parking lot All Storm water then sheet flows south across the access road and to the north Inlet of Pond A' I Basin 2 takes all of its flows to a 2 foot wide curb chase which discharges onto the access road in Basin 5 Basin 3 takes all of its flows to a 2 foot wide curb chase which discharges onto the access road in Basin 4 Basin 4 receives stormwater through the curb chase in Basin 3, Storm water then sheet flows through the site access drive and across the access road to the north area inlet of Pond `A Basin 5 receives stormwater from Basin 2 through a curb chase The stormwater then flows across the access road to the north area inlet of Pond `A' k3 1 1 V 1 1 1 R 1 1 1 1 1 1 1 STORM WATER QUALITY A General Concept The water quality of storm water runoff must be addressed on all final design utility plans Construction is anticipated to begin in Summer of 1996 We have sought to find various Best Management Practices for the treatment of storm water runoff Though there is little that may be done as most of the drainage facility is already provided we have sought to improve Storm water quality with the methods called out in the Erosion Control and Drainage Plan EROSION CONTROL V B General Concept The Harmony Market P U D Twelfth Filing lies within the Moderate Rainfall and Wind Erodibility Zone per the City of Fort Collins zone maps The potential exists for silt movement during construction of the parking/driveways and building Thus the new improvements will be subjected to both wind and rainfall erosion Per the City of Fort Collins Erosion Control Reference Manual for Construction Sites and related calculations in the appendix, the erosion control performance standard (PS) for the subject site during construction is 79 6 and after construction is 93 7 From the calculations in the appendix, the effectiveness(EFF) of the proposed erosion control plan is 72 9, during construction and 98 07 after construction It is anticipated that the construction duration of this project will be less than 8 weeks due to the hmited amount of work to be completed, therefore the erosion control plan as specifically detailed below, should meet the City of Fort Collins requirements A copy of the erosion control calculations is included in the Appendix An erosion control escrow cost estimate of $2 250 is also included in the Erosion Control Section of the Appendix Specific Details Immediately upon completion of over lot grading the silt fencing shown on the drainage and erosion control plan should be installed In order to protect the curb chases from receiving excessive silt deposits, the curb chases will have gravel filters installed around them The above items can be removed once asphalt and landscaping in their respective areas have been completed 4 VII CONCLUSIONS ' A Compliance with Standards All computations within this report have been completed in compliance with the City ' of Fort Collins Storm Drainage Design Criteria B Drainage Concept The proposed drainage concepts presented in this report and shown on the Drainage ' and Erosion Control Plan are in compliance with the City of Fort Collins drainage criteria This project was designed to be in conformance with the intent of the Overall Drainage Plan for Harmony Market P U D C Storm water Quality ' Because storm water quality has become a requirement the site has addressed this storm water aspect We have designed the erosion control to reduce the sediment which runs into the storm water system D Erosion Control Concept ' The proposed erosion control plan adequately provides for the control of wind and rainfall erosion from the study site A variance has been requested to allow an effectiveness during construction 72 9 instead of the calclulated performance ' standard of 79 6 ' The proposed erosion control concepts presented in this report and shown on the Erosion Control Plan are in compliance with the City of Fort Collins erosion control criteria REFERENCES ' 1 RBD Inc HarmoU Market P.U.D. Second Filing Final Drainage ReportTotal Site Preliminary - Revised Drainage Report_ Fort Collins, Colorado, August 13, 1990 ' 2 RBD Inc, Harmony Market P U D Third Filing Final Drainage Report, March 1991 ' 3 City of Fort Collins Storm Drainage Design Criteria and Construction Standards, May 1984, Revised 1992 ' 4 City of Fort Collins Erosion Control Reference Manual for construction Sites January 1992 1 5 I 1 1 1 r 1 APPENDIX 1/ 11 lJ 1 t VICINITY MAP 1 1 11 Z/ PKWY W PROJECk10 W SITE J J O U (n AN Os FF I WARREN LAKE lc� HARMONY RD N � MAIL CREfK )RTNER LAKE VICINITY MAP 3/ I 1 11 1 t 1 HYDROLOGIC CALCULATIONS 1 4-/ RBD Inc Engineering Consultants RUNOFF COEFICIENTS Project 673-003 HARMONY MARKET PUD 12TH FILING This sheet calculates the composite "C" values for the Rational Method JAM 05/07/96 Storm Drainage Design and Technical Criteria 5� RBD Inc Engineering Consultants 673 003 TIME OF CONCENTRATION SUBDIVISION STORM 10 yr cf = 1 00 HARMONY MARKET PUD 12TH FILING CALCULATED BY JAM DATE 05/07/96 h= 1 870 1 C x CnD•o 5 S^(1/3) tc=4+tL SUB BASIN DATA INITIAL/OVERLAND TIME TRAVEL TIME FINAL REMARKS DESIG AREA C LENGTH SLOPE tl LENGTH SLOPE VELOCITY tL tc (ac) (ft) (°h) (min) (ft) (°h) (fUs) (min) (min) 1 2 3 4 5 6 7 7a 8 9 10 11 12 1 008 078 0 001 00 310 PA 050 1 34 39 50 2 016 095 0 001 00 110 PA 340 357 05 50 3 017 095 0 001 00 100 PA 340 357 05 50 4 019 084 70 270 29 40 PA 490 430 02 50 5 005 053 40 1500 27 0 PA 060 147 00 50 6 017 037 40 350 57 0 PL 060 050 00 57 Note Column 7a codes the channel type for velocity calculations PA = Paved Area PL = Pasture& Lawns GW = Grassed Watrerway Storm Drainage Design and Technical Criteria RBD Inc Engineering Consultants 6/ I 673 003 TIME OF CONCENTRATION SUBDIVISION STORM 100 yr cf = 125 HARMONY MARKET PUD 12TH FILING DATE 05/07/96 CALCULATED BY JAM t= 1 870 1 C x CnD 0 5 SA(1/3) tc=t+tL SUB BASIN DATA INITIAL/OVERLAND TIME TRAVEL TIME FINAL REMARKS DESIG AREA C LENGTH SLOPE t LENGTH SLOPE VELOCITY tL tc (ac) (ft) N (min) (ft) (°r0) (fus) (min) (min) 1 2 3 4 5 6 7 7a 8 9 10 11 12 1 008 078 0 001 00 310 PA 050 1 34 39 50 2 016 095 0 001 00 110 PA 340 357 05 50 3 017 095 0 001 00 100 PA 340 357 05 50 4 019 084 70 270 11 40 PA 490 430 02 50 5 005 053 40 1500 21 0 PA 060 1 47 00 50 6 017 037 40 350 49 0 G 060 1 19 00 50 Storm Drainage Design and Technical Criteria ROD Inc Enymenna Cerele rt 673-003 STORM DRAINAGE SYSTEM DESIGN DATA SUBDIVISION STORM 10 yr (developed) d = 100 HARMONY MARKET PUD 12TH FILING CALCULATED BY JAM DATE OSM7I98 DP BASINS tcl ROUTING FLOW TIME 111.1 tc C INTENSIT AREA DIRECT RUNOFF OTHER RUNOFF TOTAL RUNOFF STREETICHANNEL PIPE STREET PIPE REMARKS LENGTH CHANNEL PIPE SLOPE CAPACITY SLOPE SIZE CAPACITY DESIGN VELOCITY DESIGN VELOCITY LOC 1 2 (min) 3 (R) 4 4s (min) 5 (min) 0 (min) 7 8 (INhr) 9 (se) 10 (da) 11 (cis) 12 (cis) 13 (%) 14 149 (cfa) 15 I%) 18 (in) 17 (cfs) 18 (cfs) /9 (Ws) 20 (cfs) 21 (Wa) 22 23 1 16 50 310 PA 39 89 057 457 025 07 07 050L 40 07 13 2 2 50 50 095 560 018 09 09 3 3 50 50 095 560 017 09 09 4 34 50 50 089 560 036 18 18 5 25 50 40 PA 02 52 085 553 021 10 10 408 L 103 10 39 8 6 57 57 037 535 017 03 03 site 123458 88 89 078 457 0IB2 29 29 Notes 1 Column 4a Ident fees the type of channel used to calculate the velocity, for the travel time calculations 2 Column 14a Identifies whether the street is a main arterial collector or local street for use In the street capacity calculations Storm Dri D Ian nd T ct" I Crier! RBD Inc E d One Cm a d SUBDIVISION STORM 100 yr(developed) cf= 125 HARMONY MARKET PUD 12TH FILING CALCULATED BY JAM DATE 05107196 DIP BASINS tci ROUTING FLOW TIME (11.1 td C INTENSIT AREA DIRECT RUNOF OTHER RUNOFF TOTAL RUNOFF STREET/CHANNEL I PIPE STREET PIPE REMARKS UENGTF CHANNEL PIPE SLOPE CAPACITY SLOPE ISLZEICAPACIT DESIG VELOCIT DESIG VELOCITY LOC (min) (ft) (min) (min) (min) (INht) (ac) (cfs) (cfe) (crs) (%) (cfs) (%) (In) (cfs) (cfs) (Ills) (cfs) (Ns) 1 2 3 4 4a 5 8 7 8 9 10 1t 12 13 14 149 15 18 I 17 I 18 19 20 21 22 23 1 16 50 310 PA 387 0 89 071 760 025 17 17 05 L 399 065 134 2 2 50 50 100 900 016 14 14 3 3 50 50 100 900 017 15 15 4 34 50 50 100 900 036 32 32 5 25 50 40 PA O17 0 52 100 890 021 19 19 408 L 1034 099 392 6 6 50 50 047 900 017 09 09 site 123456 89 89 095 760 082 62 62 Notes 1 Column 4a Identifies the type of channel used to calculate the velocity for the travel time calculations 2 Column 14a Identifies whether the street Is a main arterial collector or local street for use In the street capacity calculations R. Dnl.g D"gn rid T M W Cllt 4 V1 1 C INLETS 24 I 1 1 1 1 1 1 1 1 1 1 1 t CAPACITY OF 2 FOOT WIDE CURB CHASE Worksheet for Rectangular Channel Project Description Project File c \haestad\fmw\project2 fm2 Worksheet HARMONY 12TH SIDEWALK CHASE CAPACITY Flow Element Rectangular Channel Method Manning s Formula Solve For Discharge Input Data Mannings Coefficient 0 016 Channel Slope 0 020000 ft/ft Depth 039 ft Bottom Width 200 It Results Discharge 439 cfs Icy 3 = Flow Area 078 ft' Wetted Perimeter 278 ft �� Z Top Width 200 ft Critical Depth 053 ft Critical Slope 0 008129 ft/ft Velocity 563 ft/s Velocity Head 049 ft Specific Energy 088 ft Froude Number 159 Flow is supercritical 05/07/96 FlowMaster v513 ' 01 33 37 PM Haestad Methods Inc 37 Brookside Road Waterbury CT 06708 (203) 755-1666 Page 1 of 1 10'-O" MIN SECTION 5\8" X 2 -6 X 4 -6 A \ RAISED PATTERN NON- PLACE FIRST SCREW SKID GALVANIZED 6 FROM FRONT EDGE STEEL PLATE SEE OF PLATE (AASHTO M-111) B DETAIL "A" B L A PLAN VIEW 2-0' F/L 6" 8-0" N TS SLOPE PLATE TO MATCH SIDEWALK 3" 2'-0" 3" N 4 5 ; �4� 1 2% SLOPE _1 : It A < 4" <n 2 1 7 1 /2" s a SLOPE 6' MIN 21 SECTION A -A SLOPE 3'-0" 5 -6" SECTION B-B iz I 1 11 1 1 I I ■W,NC Engineering Consultants CLIENT 1 ✓dd �?.C�7 L "` >`� i JOB NO �. PROJECT r� �Z*'�� CALCULATIONS FOR _ MADE BYt1!VATE'I=CHECKED BY- SHEET OF - 1 - -- - -_- -fi- - -- - - - i --- _- �,4 JIt `! Q_ e�L i"ni Cq - - - - - - - -- - - — - r 4�Ae 1 I ZIL 131 1 1 Triangular Channel Analysis & Design Open Channel - Uniform flow Worksheet Name aim Comment capacity of trickle pan Solve For Discharge Given Input Data Left Side Slope 4 00 1 (H V) Right Side Slope 4 00 1 (H V) Manning's n 0 016 Channel Slope 0 0050 ft/ft Depth 0 38 ft 4 S Computed Results Discharge 1 19 cfs = 133 Velocity 2 11 fps Flow Area 0 56 sf Flow Top Width 3 00 ft Wetted Perimeter 3 09 ft Critical Depth 0 35 ft Critical Slope 0 0069 ft/ft Froude Number 0 86 (flow is Subcritical) Open Channel Flow Module, Version 3 21 (c) 1990 Haestad Methods, Inc * 37 Brookside Rd * Waterbury, Ct 06708 141 I 11 EROSION CONTROL 27 1 1 1 I 1 1 1 1 1 1 1 RBD Inc RAINFALL PERFORMANCE STANDARD EVALUATION T w WVV PROJECT Harmony Market PUD, 12th filing STANDARD FORM CALCULATED BY JAM DATE 02/19/96 Developed Erodlbilty Asb Lsb Ssb Lb Sb PS Subbasln Zone (ac) (ft % ft 1 moderate 008 430 090 2 moderate 016 110 180 3 moderate 017 100 240 4 moderate 019 130 260 5 moderate 005 40 270 Total 065 147 21 796 CA16%1VIrLC t.r�LliVl/'11 I%JI'IJ Lb = sum(AILI)/sum(AI) _ (0 08 x 430 + + 0 00 x 0)/ 0 65 147 ft Sb = sum(AISI)/sum(AI) _ (0 08 x 0 90 + + 0 00 x 0 00)/ 0 65 21 % PS (during construction) = 79 6 (from Table BA) PS (after construction) = 79 6/0 85 = 937 1 S/ 1 ' RBD Inc 1 1 EFFECTIVENESS CALCULATIONS Total Site as one phase , ,. ,W. PROJECT Harmony Market PUD 12th filing STANDARD FORM B CALCULATED BY JAM DATE 02/19/96 Erosion Control C Facto P Facto Comment Number Method Value Value 6 Gravel Finer 1 08 placed at curb chase 8 Sift Fence Barrier 1 05 placed at downstream property boundaries 9 AsphaR/Concrete Pavement 001 1 budding also considered paved 1 Bare Soil Packed and smooth 1 1 1 Bare Soil Packed and smooth 1 1 1 Bare Sod Packed and smooth 1 1 1 Bare Sod Packed and smooth 1 1 M O S BASIN °h ac SITE 796 065 Practice C A P A Remarks BASIN BASIN ae SITE DURING CONSTRUCTION 1 008 8 008 004 SIR Fence Barrier 2 w/o building 010 8 010 0 05 Sift Fence Banner 2 building 006 9 000 0 06 Asphall/Concrete Pavement 3 w/o building 007 8 007 004 Sift Fence Barrier 3-building 010 9 000 010 AsphaR/Concrete Pavement 4 w/o building 006 8 008 0 03 Silt Fence Barrier 4 building 002 9 000 002 Asphalt/Concrete Pavement 4 east asphalt 005 9 000 005 AsphaR/Concrete Pavement 5 construction 001 8 001 001 SIR Fence Barrier 5-easOng asphalt 005 9 000 005 AsphaR/Concrete Pavement 032676 0 438 Cnst [0 08A 00+ +0 05x0 01y0 65 = 050 Pnet = 0 8)40 084 50+ +0 05x1 OOyO 65 = 054 EFF = (1 C'P)100 = (1 0 50 0 54)100 = 7290 ««< 79 6 (PS) Assume paving not constructed within 6 weeks use gravel inlet filters at all area inlets & sift fence at swales & downstream perimeters ' RBD Inc ii / 1 1 1 1 1 1 1 1 Total Site ifo / J-V V J PROJECT Harmony Market PUD, 12th filing STANDARD FORM B CALCULATED BY JAM DATE 02/19/96 Erosion Control C Facto P Facto Comment Number Method Value Value 9 Asphalt/Concrete Pavement 001 1 Paved and constructed also building 16 Established Grass Ground Cover 70% 004 1 Lawns and openspace 19 Established Grass Ground Cover - 100% 002 1 Area not disturbed during construction MAD 0 R BASIN PS % ac SITE 937 065 MAJOR SUB AREA Practice C' A P' A Remarks BASIN BASIN ac AFTER CONSTRUCTION 1 008 16 000 008 Established Grass Ground Cover 70% 2 w/o building 010 9 000 010 Asphalt/Concrete Pavement 2-building 006 16 000 006 Established Grass Ground Cover 70% 3 w/o building 007 9 000 007 Asphalt/Concrete Pavement 3-building 010 16 000 010 Established Grass Ground Cover - 70% 4 w/o building 006 9 000 006 Asphalt/Concrete Pavement 4 building 002 9 000 002 Asphalt/Concrete Pavement 4-exist asphalt 005 9 000 005 Asphalt/Concrete Pavement 5 construction 001 16 000 001 Established Grass Ground Cover 70% 5-wasting asphalt 005 9 000 005 Asphalt/Concrete Pavement Cnet = [0 08x0 04+ +0 05x0 01 y0 65 = 002 Pnet = [0 08x1 00+ +0 05x1 OOyO 65 = 092 EFF = (1-C'P)100 = (1-0 02*0 92)100 = 9807 > 93 7 (PS) RBD Inc 1 h r_ 1 C 1 11 11 1 EROSION CONTROL COST ESTIMATE PROJECT Harmony Market PUD 12th filing #673-003 PREPARED BY JAM DATE 02/19/96 TY R EEDIN Unit Total Method Quantity Unit Cost Cost Notes Reseed/mulch 0 65 ac $1 300 $845 See Note i�] Subtotal $845 Contingency 50% $423 Total $1 268 EROSION CONTROL MEASURES Unit Total Number Method Quantity Unit Cost Cost Notes 6 Gravel Fitter 2 ea $300 $600 8 Silt Fence Barrier 300 LF $3 $900 Subtotal $1 500 Contingency 50% $750 Total $2 250 Total Secun $2 250 Notes 1 A<1 ac=$1300/ac, A=1-10 ac=$650/ac A>10 ac=$500/ac [J [J CONSTRUCTION SEQUENCE YEAR 1996 1997 MONTH M I A I H J I J A I S O N I D J F OVERLOT GRADING WIND EROSION CONTROL Soil Roughening Perimeter Barrier Additional Barriers Vegetative Methods Soil Sealant Other RAINFALL EROSION CONTROL STRUCTURAL Sediment Trap/Basin Inlet Filters Straw Barriers Silt Fence Barriers Sand Bogs Bare Soil Preparation Contour Furrows Terracing Asphalt/Concrete Paving Other —Grovel Mulch VEGETATIVE Permanent Seed Planting Mulching/Sealant Temporary Seed Planting Sod Installation Nettings/Mots/Blankets Other STRUCTURES INSTALLED BY MAINTAINED BY VEGETATION/MULCHING CONTRACTOR DATE SUBMITTED APPROVED BY CITY OF FORT COLLINS ON ci Z b/ 1 1 1 TABLES AND FIGURES 1 1 1 1 1 1 34 1 71 1 1 1 1 1 1 1 1 1 1 1 i 1 1 1 1 1 1 1 0 U Q LL A P4GE 26 ESTABLISHED GRASS AND NACTORS FORT COUINS, COLORADO °4" 025 020 015 010 005 - - -- - 0000 10 20 30 40 50 60 70 80 90 100 ESTABLEG GRASS GROUND COVER (7) FIGURE 5 1 TABLE 8—A RAINrALL PERrORMANCE STANDARDS rOR PORT COLLINS, COLORADO LENGTH SLOPE (1) (rT) O S 1 0 1 5 2 0 2 5 3 0 3 5 4 0 4 5 5 0 6 0 7 0 8 0 9 0 10 0 20 0 30 0 40 0 50 0 100 70 9 74 G 7G 8 78 4 79 5 80 3 81 1 81 6 82 1 82 5 83 0 83 4 83 G 83 8 84 0 84 7 84 3 84 9 84 9 200 72 0 76 3 78 2 79 5 80 5 81 2 82 1 82 5 82 8 83 2 83 6 83 9 34 0 84 2 84 3 84 8 84 9 84 9 84 9 300 72 4 77 0 70 8 80 0 80 9 81 6 82 5 82 8 83 1 83 5 83 8 84 1 34 2 84 3 84 4 84 8 84 9 84 9 85 0 400 72 G 77 4 79 1 30 3 01 2 81 8 82 7 83 0 83 3 83 7 84 0 64 2 84 3 84 4 34 5 84 0 84 9 84 9 85 0 500 72 7 77 7 79 4 80 5 81 3 01 9 82 8 83 1 83 4 83 0 84 1 84 3 84 4 84 5 84 6 94 9 84 9 85 0 85 0 600 72 8 77 9 79 5 80 6 81 4 82 0 33 0 83 2 83 5 83 9 04 1 34 3 84 4 84 5 84 6 84 9 84 9 85 0 700 72 3 78 0 79 7 80 8 31 5 82 1 83 0 83 3 83 5 84 0 84 2 04 4 34 5 84 5 84 6 84 9 84 9 85 0 300 72 7 78 1 79 7 80 8 81 6 82 2 83 1 83 4 83 6 04 0 04 2 84 4 84 5 84 G 84 6 84 9 84 9 85 0 900 72 7 78 2 79 8 80 9 81 7 32 2 83 2 83 4 83 6 84 1 84 3 84 4 84 5 84 G 34 7 84 9 04 9 85 0 1000 72 7 70 3 79 9 81 0 81 7 82 3 83 2 83 5 83 7 84 1 84 3 34 4 84 5 84 6 34 7 84 9 84 9 85 0 1100 72 6 78 3 79 9 81 0 81 7 82 3 83 3 83 5 83 7 84 1 84 3 84 5 84 6 84 6 84 7 84 9 84 9 1200 72 G 78 4 80 0 81 0 81 8 B2 3 03 3 83 5 03 7 84 2 04 3 84 5 04 6 84 G 84 7 84 9 84 9 ro 1300 72 6 78 4 80 0 81 1 81 3 82 4 83 3 83 6 03 8 84 2 34 4 84 5 84 6 84 6 84 7 84 9 85 0 a 1400 72 5 78 5 80 1 81 1 81 8 82 4 83 4 83 6 83 8 84 2 84 4 84 5 84 G 84 7 84 7 84 9 85 0 1500 72 4 78 5 80 1 81 1 81 9 82 4 83 4 83 6 83 8 84 2 84 4 84 5 84 G 84 7 84 7 04 9 85 0 1600 72 4 78 5 80 1 81 1 81 9 82 4 83 4 83 6 83 8 84 2 84 4 84 5 84 6 84 7 84 7 84 9 1700 72 3 78 5 80 1 81 2 31 9 82 4 83 4 83 6 83 8 84 3 84 4 84 5 84 6 84 7 84 7 84 9 1800 72 3 78 6 60 1 81 2 81 9 82 4 83 4 83 7 83 8 84 3 84 4 84 5 84 6 84 7 84 7 84 9 1900 72 2 78 6 80 2 81 2 81 9 82 5 83 5 83 7 83 9 84 3 84 4 84 5 84 G 84 7 84 7 84 9 2000 72 2 78 6 80 2 81 2 81 9 52 5 83 5 03 7 83 9 84 3 84 4 84 6 84 G 84 7 84 7 84 9 2500 71 9 73 6 80 2 81 3 82 0 82 5 83 5 33 7 83 9 84 3 84 5 84 6 84 7 84 7 84 8 3000 71 6 78 7 80 3 81 3 82 0 82 5 83 6 83 8 84 0 84 4 84 5 84 6 84 7 84 7 84 8 3500 71 4 78 7 80 3 81 3 82 0 82 6 83 6 83 8 84 0 84 4 84 5 84 6 84 7 84 7 84 8 4000 71 1 78 6 80 3 81 3 02 0 82 6 83 6 83 8 84 0 84 4 84 5 84 6 84 7 84 8 84 8 4500 70 9 78 6 80 3 81 3 82 0 82 6 83 7 83 9 84 0 84 4 84 6 84 6 84 7 84 8 84 8 5000 70 6 78 6 80 3 81 3 82 0 82 6 83 7 83 9 84 0 84 4 84 6 84 7 84 7 84 8 84 8 0 n In (l Z fl TI -1 m A_ D 7 A G I Olne TIME IN MINUTES Z411 I I I I I I I EXCERPTS FROM FINAL DRAINAGE REPORTS for ' HARMONY MARKET P U D SECOND AND THIRD FILINGS 1 1 15 Z=� i=.mow q zFY ' BASIN "A" MP -"HOP EETENT-ru'-N VOLUMES PROJECT: PACE COMMENTS: ?.0: YEAR STnPPi �t L.o-tfl ' MAXIM! ;., r:!..!J-Wit"IBLr_ RELEASE (C,= ) 1.7 RATIONAL EDUATION: 0 = CIA C - 1 A(Area) 8.49 TIME OF CONC'E N-1 PAT ION :- TIME CA I IDFLOIJ OUTFLO34 STORAGE (rdn) (in/hr) (cu ft) (r_.a ft) (cU ft) (ac ft) '--------------- `.i ------- ---48 --------- ----- ------L----- -?-^-_-c----- 5. 9 2-2---J96 10 8.48 7.3 37142.4 1020 36122.4 0.820256 15 3.43 6 45792 1530 44262 1.016115 ' 20 8.43 5.2 52915.2 2)40 50875.2 1.167933 25 8.48 4.6 58512 2550 55962 1.284710 30 8.48 4.15 63345.6 3060 60285.6 1.383966 ' 35 9.49 3.8 67670.4 3570 64100.4 1.471542 40 S.48 3.5 71232 4080 67152 1.541597 45 8.48 3.25 74412 4590 69222 1.602S92 50 8.48 3 76320 5100 71220 1.634986 ' 55 8.43 2.9 78355.2 5610 72745.2 1.67 60 9.48 2.6 79372.8 6120 .73252.8 1.681652 70 8.48 2.3 81916.8 7140 74776.8 1.716639 ' 90 8.48 2.05 83443.2 8160 75283.2 1.728264 90 8.43 1.95 94715.2 9180 75535.2 1.734049 100 8.48 1.7 96496 10200 76296 1.751515��E ' 110 3.48 1.55 86750.4 112.20 75530.4 1.733939 120 8.48 1.45 86531.2 12240 76291.2 1.751404 7EStc��- l�v c13_5.A 4 ,34 �.._ �. -c.� c-f_ :�.�.� r...., m c- r..t'•.�rn. rite' A 1.5'NIN JI LRWy—/ M,Iadoxi G11ADE • LOui. r 011,4 Q AT 1.5'OEPIH •51 Acfs He• 5.5 AEs DEPTH -0.5' 0W Toef♦ OEPTH•1,25 I HARMONY ROADSIDE DITCH DETAIL NTS WEST OF SITE ENTRANCE yalp,,iiiii _ POND •' / !;DDYD ELLV •955H1 r PERMANENT POND INFORMATION POND •' / !;DDYD ELLV •955H1 r PERMANENT POND INFORMATION Required Pond Area Design Release Rate Storage Design Slorc lacresl Ices) TTO lac-Itl 101 Y W! A 8.48 L79 IT5/94.5 B 9.95 5.45 1.05 1. Will M C. TAB 5.05 1 51 IA7/9z.0 D 6E] 6.Z4 ZIM S.Zalj P-s E I'll" z.Ts 262 ZW/A70 F 2.11 0.45 0.45 0451.5 ax Naloa iii"Ni G r O.Ex Oats OaO/sT:E L GTE 0.54 Ole 015 "a Ali PIPE N TO BE RAGGED AT WNH0.E AND AMNOONEP B 895 FF•94$ PACEeR� T --al 1" •E• Want POND TEMPORARY POND INFORMATION E DITCH TO Oli POINT K 10510E PITCH MT&1 ., 155HTJ �TWO EXIST. CONCRETE IMIGATION AN HEGI RO HARMONY ROAD \ FF •9y.0 \ \ SUILDERS�IT DARE � a Requirsd Pond Area Max. Release Rate Storage Design Storage [acres, aloe' O.Ecls/acre lac-Itl lac -It 41 H I.21 0A4 0 Z5 1 O.F4/95.5 �' H1 la all �V bL7 W� rim' s A iI I II' JI ♦ 6 M14 GREOE • 0.5'% n 005,11 QAT IDEPTH • 9.4, AN V - 9.4t H/"s Will, . 0" Q REQUIRED - 4 BG Ci's SECTION A —A NTS DRAB WN DESIGNED CHECKED � EISpiFwring CAI5sW4nls 055-015 i50 al Coye Aienue 1155 e.euy lonnson Avo 5u1te IN Had SO Fmntaee Rd Wait Ewm 20E APPROVED DATE PRDIECT NO. And Ca" 'ns Cnmado W625 C010i Syy11195 Norma, WiA Vail DObradal65) yy]1A-a955 W5Wa10] %rommfiJal or S7EELE'S IF AAO L G DIZ 00 ' EXIST151L SUMP INLET EVANGELICAL COAZMANT TRURCH QAY ERIHAON flb FCTON, SEE DETAIL 5HT G I IN HIS x 0 100 xm lm GRAPHIC SCALE 1"�tlNl' W -W NO" (,LL. - RQTEiL 1. ALL DRAINAGE FACILITIES ARE TO HE SIZED DURING FINAL DESIGN OF THE FILING UNDER DEVEWPMENT. Z. SEE FINAL GRADING PLAN FOR GRADES IN THIRD FILING. DRAIN E ]. SECTION B-B WILL BE FROM THE ENIGMAT APEwill AT DESIGN POINT HE TO A POINT TEAT L Cli r�15T INVERT HATCHES EXISTING GROUND NEAR RULE DRIVE. A. GRADED AREAS FOR PONDS AND SWALES AND ROADSIDE DITCHES ARE TO BE REVEGETATED ACCORDING TO THE LAI I SCARE PLANS. 5. REVEGETATION OF AREAS THAT ARE DIS- TURBED DUE TO CONSTRUCTION SHALL BE IN ACCORDANCE WITH THE SPECIFICATIONS ON THE LANDSCAPE PLANS. EROSION CONTROL NOTES Lmu� ion of the Smele's Mahe[ building expansion, Place erosion come[ My bNes meaer of the building expansion as shown on [be drainage and erosion control pol of Nu segue. These My bales should remain in place until the building s been erected including the roof dmin connection 10 [be existing detention pond RTCH 114V111 MATCHES MISTING GRAPE. RIMS PRNN NATUI WTd RULE ORNE iiEMPoNARY GRAVEL fYl-pE-SAC I L-.f& RULE DRIVE HARMONY MARKET III LEGEND eDEVELOPED RA5IN IOENTFIGTON bb DEVELOPED BASINAREA IN ACRES H2 HISTORIC BA51N IMNTIFICATlp 410G 41y10i IMAI N AREA IN ACRES �•� H16TORIC DRAINAGE Vail Units �••� DEVELOPED DRAINAGE BASIN LIVE, PROPOSED STORM PAI ME, WITH INLET OR MANHOLE A DESIGN MINT �aiamiixai EXISTING STORM PIPE WIN INLE[ Y 00 1 O YEAR STORM Poi 00 DATIONEAKAREA ExiyTNG f N4GE CHANNEL we FROUDE NUMBER FF FINISH FLOOR L FWWLINE ® IHVN T GROyION CONTROL was — 1pwy1141a COMOUR ,95— IMPRD/tP KITE CONTOUR fal EROdON CONTWL EiAdi THIRD FILING OVERALL DRAINAGE PLAN I TU I y I & EROSION CONTROL PLAN DEVELOPED SITE HYDROLOGY DESIGN POINT BASIN AREA (cc) C I I (cN OTy (cle) 1 1.6 25 0.51 OJ 1.9 2 2 0.17 0.95 0.9 1.8 0 0 OIL-LO95-L 0.9 1.9 4 0,4 DM 0.92 1.0 2A 5 1,51 D" 0.75 1.8 4.9 6 6 0.17 1 0.39 1 0.4 09 or e POND 'A' 1 I 'a atti,r,_, HARIAONY MARKET P.D.D. OVERALL DRAINAGE PLAN, EROSION CONTROL NOTES: 01111ET4DED 'WTH THE THWD FlUbi TOTAL SITE REIIIIRNIRY - _.<a-.o( Doping, the wit footing ,r,.. DETENTION POND 'A' 91PWARY . a. ._s� ro pion wawa be mna sa. m awleprotect the Pro ti bon raw 9 a CeDuPRC4OSED me .e aoe.m e qo.x Oalaeevw.a uoon,CONOmON The INVERT OF AREA INLETS 4993,40 ray °boon eue n.e °' be mm aT wby e iandomm . been ran'pe1ee 100—M OUSEL 4994.90 FREEBOARD 0' DETENTION PROMDED 1.75 AC PT RELEASE RAZE 1.70 CPS Y-0- 0100 - 1.2 cis DIDD = 0,375' CONCRETE TRICKLE PAN S CWSTlei 40JENCE SiWOMES'. INSTALLED BYE ITI. 1 Mi Y) DATE wN WnTED APPROVED Be COI (A TVNI Nu LEGEND y '.� a« - EXISTING STORM SEWER ei INLETS EXISTING CONTOUR (1INTERVAL) �A21 PROPOSED CONTOUR 2 Si DESIGNAPON 4.64AC Si AREA no�.l nnn. m..,�. BASIN BOUNDARY PRW OVERALL DRAINAGE PLAN (BASIN A) s.-....d.-SUBBASIN BOUNDARY SITE BOUNDARY LIKE Qj DESIGN PgNT ROW DIRECTION G- SET FENCE BARRIER C/ CiRAVEL INLET FILTER 100 YEAR HW. E TIER OF c(ELOR� 1-800-922-1967 ce 534-6700 ®: City of Fort Collins, Colorado UMXrY PLAN APPROVAL SCALE 1'=50' APPROVED. D6eolor of Eorlaeertry Date CHECKED BY: DESIGNED acao Mla HARMONY MARKET P.U.D. TWELFTH FILING MAO MAY 19% DAT 67 PROJEcr NO I EnDinex9l` ComWINro D,°9, Ems",,"RAT', ` ;o`y'`aD'E;60 """ "" °"r-ee'• °^® 9ro/W-YT) eo/Afa-ssn BOGAARD CONSTRUCTION, INC. APPPOY£D Eaten It Eeateeeter Blifty Date CHECKED BY'. spirmembir Nutty Date CHECKED BY. ParIN 6 Recreatim Date CHECKED BY: Date CHECKED BY: Dote 1 DRAINAGE AND EROSION 7 3 CONTROL PLAN