Loading...
HomeMy WebLinkAboutDrainage Reports - 05/09/2001FINAL DRAINAGE AND EROSION CONTROL REPORT FOR LARKS NEST P.D.P. PREPARED FOR ARMHOL, LTD MARCH 21, 2001 PREPARED BY STEWART & ASSOCIATES, INC. 103 SOUTH MELDRUM STREET P.O. BOX 429 FORT COLLINS, CO 80522 TEL: 970-482-9331 FAX: 970-482-9382 TABLE OF CONTENTS A-C Cover Letter and Text D Vicinity Map 1-31 Storm Drainage & Erosion Control Calculations Pocket Overall Grading, Drainage & Erosion Control Plan 1 STEWART&ASSOCIATES Consulting Engineers and Surveyors March 21, 2001 Mr. Basil Harridan Stormwater Utilities ' City of Fort Collins P.O. Box 580 Fort Collins, CO 80522-0580 Dear Basil, RE: LARKS NEST P.D.P. This project is construct six four-plex buildings with off street parking and a detention pond area. Construction for this project is scheduled for early Spring 2001. This project is in the ' McClellands Mail Creek Basin. The site is located in the Southwest 1/4 of Section 35, Township 7 North, Range 69 West of the Sixth P.M., Fort Collins, Larimer County, Colorado. The project is bordered by "Woodlands" developments on all sides. This is the last undeveloped area in the "Woodlands" Harmony Road is on the South side, Wakerobin Lane on the North side and Starflower Drive on the East. The West side is separated along the property line by a six foot high concrete block wall. Part of this site is an existing drainage channel that flows West to East along the South side of this site. All design and calculations within this report are in compliance with the City of Fort Collins Storm Drainage Design Criteria and Construction Standards. All basins in this project use the rational method for the runoff U.D. Inlet is used to size the inlet. ' If you have any questions or need any more information regarding this report please let me know. Sincerely, *Franklin D. ' FDB/bac Y p , O LLO y ON �O H ^.R.E. & L.S. 4, A James H. Stewart and Associates, Inc. 103 S. Meldrum Street • P.O. Box 429 • Ft. Collins, CO 80522 970/482-9331 9 Fax 970/482-9382 I I FINAL DRAINAGE & EROSION CONTROL REPORT FOR LARKS NEST P.D.P. INTRODUCTION:. This project is for developing six four-plex buildings, parking areas, access drives, and a detention pond on a 2.00 acres site. This site is an infill project. It is located in the City's McClelland/Mail Creek Drainage Basin. The site is located in the Southwest 1/4 of Section 35, Township 7 North, Range 69 West of the Sixth P.M., City of Fort Collins, County of Larimer, Colorado. Developed "Woodlands Subdivisions" are on the West, North, and East sides of the project. Front Range Community College is located on the South. EXISTING CONDITION: The site is bounded on the North by Wakerobin Lane, on the East by Starflower Drive, on the South by Harmony Road, and on the West by an apartment complex. A six foot high block wall separates this site from the apartments. All roads are constructed. There is an existing drainage channel along our South property line. It is about 30 feet wide and flows West to East at about 1.0% slope. The flow in the channel is controlled by an existing 36" R.C.P. at the West side of our site. West of this site is a 30 foot wide dike constructed in the swale with the 36" pipe through it. According to the Mail Creek Master Plan, 100-year flow in the swale is 91.9 c.f.s. A cross section of the swale at our release point in the swale shows the 100-year High Water line to be at elevation 5064.5. On the East side of our site in the swale are two existing 42" R.C.P. They flow East under Starflower Drive to the existing swale on the East side of the street. Runoff on the North side of Harmony Road flows to an existing 8 foot long curb inlet on Harmony Road and then into the existing swale at Starflower Drive. Also runoff from the West side of Starflower Drive flows to this inlet, about 300 feet. The remaining 160 feet of the West side of Starflower Drive along with all of the South side of Wakerobin Lane which is about 290 feet, flow to an existing pan at the intersection of Starflower Drive and Wakerobin Lane, then flows in the pan Northeasterly across the street, then Northeasterly along Starflower Drive. The existing site slopes Southeast to the existing drainage channel or to Starflower Drive then back to the existing drainage channel. The average slope is about 1.06 percent. This site is covered by native grasses, weeds, and bare ground at this time. 13 DEVELOPED SITE: We are proposing to develop six four-plex buildings with attached garages, private access ' roads, private parking, and a detention pond. The project is scheduled to begin construction in early Spring, 2001. At present there is no proposed phasing for this project. All runoff from this site will be to the proposed detention pond North of the existing drainage channel on the South side of the project. The runoff will then be to the existing drainage channel in a 15" pipe and be released at this site's two-year historic runoff rate. There are three sub -basins on this site. Sub -basin "A" is located in the Northeast corner of this site and is 0.29 acres. Runoff from this basin is to Starflower Drive, then North to a proposed 10 foot curb inlet on grade, then Northwest in a 15" pipe to a proposed area inlet that will also catch runoff from this basin, then South in a 15" pipe to the proposed detention pond. Sub -basin `S" is most of the developed site. It is 1.45 acres more or less. Runoff is directed from the most Northwest corner of the site over land and in grass swales to the North -South access road, then South in curb and gutter, and also sheet flow to a proposed two foot curb opening in the South parking area, then in a two foot curb opening to the proposed detention pond. Sub -basin "C" is located along Starflower Drive. It is 0.26 acres. All runoff from this basin is to a proposed 10 foot curb inlet on grade East of the detention pond, then piped to the detention pond. The detention pond is designed to hold the developed 100-year runoff plus 120% of the Water Quality Capture Volume (WQCV). The inlet will be raised in the pond to WQCV level. Holes will be drilled through a steel plate placed in the area inlet. The holes will be 5/8" diameter and be drilled every 4" up beginning at the pond bottom to the top of the inlet which is 12" above the pond bottom for the 40 hour release rate. At the WQCV water level runoff will be allowed over the top of the inlet. A restriction plate will be placed on the outlet pipe in the area inlet. It is designed to let runoff be released at the two-year historic rate. EROSION CONTROL: This site is in the City's Moderate Wind Erodibility Zone and in the Moderate Rainfall Erodibility Zone. A silt fence will be constructed before beginning construction and left in place until all construction is completed. A straw bale dike will also be constructed around both area inlets and left in place until construction is completed. Because the top of the area inlet in the pond is above the pond's bottom because of the WQCV, this area will act as a sediment trap during construction. Prior to seeding, the pond bottom will need to be regraded. The detention pond and any disturbed area in the existing 30' swale area will need to be reseeded as shown on sheet 4 of 10 of the utility drawings. Required escrow to the City of Fort Collins for erosion control is $4170. C s� STEWART&ASSOCIATES 103 S. MELDRUM, FORT COLLINS, CO 80521 PH. 482-9331 FAX 482-9382 ' Consulting Engineers and Surveyors 1 [/ / By:41' Date: /20 28 nt:-4Z Clierc�i /TY�t! 7,5Sheet No. of ' Project: .6yele 7- Subject: ) A-17 8 1 1 1 1 L 11 =._20_ac ..xYO1SliL Z t J7bf7?S� - - _ _ �/' i � I 00 In co CO 0 r�- CUD. 0 >1 C6 4 *4 ..t: LO LO to ..... ...... ru Wi ■■■■■■■MM■/■■■M/\■■\■■M■/■■■//■//\■■ I.N ■■/MI\//11\//■ /■//\///�///�/IiM■/■ ■■■e■■■EaO■■■■■US M,mm■Mt■■w MEN ■■■OEM■■■■■■ III ANNE/E '.■■■■ I■■■■■■■■E■■rill■EOO■ ■\■■■■■■M■■■■■■■MEMM■■■■■■■Ones■■U■ II INN I■■O■ ■■■■■■ME■■O■■I/■■■tII■ ■onsoonsMMwMNMO■■ENOEOMEEE■Eee■■■■mommummossman an I' ■■ /■ N■■■ •t■\■■EOE■■Ee►/O■■MIIE■ ■a■■■■eeMMMEMeM■Man■■MOOR■■■E■■■■■ I I■ ■ I■E■ It■■■■■■■■ttONNaNN�/ENEMA ..........nn.............■...■■.■ ■/ ■■.I ■■ i..■ I■■w■■..■ .. 1. . . . . , r r• • . ■ .I ...............■.r....seo..... Manor .■a.IL.. ■■e'I ■OMMMII■OEMw■■O■ ■ I■EMSM■r'JI ■O■eel■MM■/■M■■MMMMM■/eel/■M■/■■MM'11I//.ell■',I■Mr.M■/■Mr•■■M■■M■■MIi■■ /cell■MI/O■ ..■■..■..�■ENMNNONEOMEMM■■MOOaa■■'Ir.M1 ■■11'I■1 ■'I.a.NMI ■NNENSEEUIINE■■'.NNE I'.NNww■ ANnmwm ■.■.■.■ENE■....■...ww.w......a.MI.Iw/.M■Iw ■1 I.SEEM I....■...II■■..'.... .......■ ■■Mee■■MEMM■■M■■■■MM■■MM■■MM■/■M/IN I■■/. 1■/•Ill■■■'I■■■■■■EMI/■■MId■■■ .aM■■MM■►. ■.M...wa........w....w........I.I.I...MI,1.I1..■ rl...■■M...►IM. w► S n......•.. ■■■■■MOEEM/■SMO■MMMM■■MM■MOUE■/.I III■■r1/ill/Ill/II■■M■■■■I/MMM!I NONE■■■M//■■■M/■r:EM■ ENNE■■■OEM■■E■E■aEraEEENEa..r.r./.a r,E Er.o11 Awl ■MEdNEaEEMaIrENM•.ENwMEE'NEE ■!/Ewa■ .w■..M.E.ME■■■wNME.M■NMMENwMEN.IraNr/MEl.Eer ■N.E..w...I...w M'..■.Ow Aso • .SOUSE. MNS.oNNM.M..wwNNNEw■■oNo.aoOEr, I.■r.UU•.EU/.I■oo a•.MwtMomm/. ■a'.MwwwM/lw■ /MENSES■ ■eUMOMEaM■■tE■■ M etc■SEEM■■I/IVENI■e■IIIE■I!■■M■■■t:■■■IAEMEM■'.MMe■ I■Et■MOMw- ■o■■EMwaMM■MEENEtamM■EENeEMr1•,■'IMr/t■Lw 1NEI MMNaEN■iMMII/NOl■IiM■M■■ ./■■M■/■M!/■ ■uuauMMuwuuuNNuuurlar ■ru■•.uu.rl owao.ov.uuE►■ouoaENuw■r.au ■■o■■OEEMMMEwrMM■MMOMEaeOEME/•I"■'I//Er ■OI,r■■III/1 ■OE■/dMOO:■MMeO•.■MOMME!/Or =MOOD■ ■tet■MMMMM M■MMM■■SMMNOMMM/.al/OI■MM\IraNIOOeI/E■'i rSEEwr.■■■EMI'IaE■ • •■Mate■ ■\■Ma■■MEMMMMOONM■■OMMENEN'/I/.Ne/Nr/NNEI.IMEI REP /M■/IEwEEI/EEONe!MEMO ■Ma■OEM■ ■■MMMMMaaMNeeeeMMEe■■ME■Er.r.r/c.■e�eeec�llMMI■I/E■!/\�ae'.rtOEM I:MEEE■ NEMMMetaM/ .uN.NNNNM u.MM.M..M u..r/o..r■r.M.v uu of ►..ML u...•..M...►■..■... ......■...-. .■Ew.OSNUM■■NEEMOMNOMENE'/1/NI/al,ator ANSI IN■1/NE►,MoEMIIEEMNE'.wMaMNE/-Nano NNEMEaMteMM■■tESM000NE■/.r.E/rI■INOMr/e■■IIE!I■O:OMaa!/EN■MIAli NEEMe!■MS■ .EEO■ ■MrEEOMMEMMENEMNNMNSUSS//'.■'.MI/.■IINa..11'.■1 ■'IEONS'.NOMNa'..S■NotIANoEM ASSUMES ■■MO■■■■MMOMMMMMMMM■■Mr///.l!■►�■■//SOMMEI:■■li■■■I/■MMMIIIM M\MM/itMM■M■ AEMMeEMM■ ■EMUMMMUMMao■amma ONO Er'II■r.Mr/ENIt ANEMM•.IIOI.■UM//MEww:.NNNNw■EEwNwOE/AEEEEEEUEE■ ■MMMEM■■NMEMMMMMaMOOI/./I►.■II■MI/■NUN■iM11!NI Or:�^l91d■NeSeI/M■M■■M■/�MOMO■ I ■E�i ■■MteMMEEMet■■■■Ntlr//'II///Et!aOMOMr'.OM'.■■1I/aaMM:NEEwE/ArMOMEN■/:MNEE■ • �.E■ mono ■OMEO■■■■EOM/■M'/ OAF MIIMM'.NNOSEPAOC•".IIMMI /NeMI/■MEMr:MSMe:EwI�MeOOM■ MOSS• ■rMw.aMENMaNMEwEEM'I'.I�//Me iOEEOE/IMI'a11r'.I■N■:NwMMU!/MOMwEOI�E aaaE.E�I.E sonsmoi ■MMOMaEMOMMwEMaMOI.'.'/►■EIIEUEMwII■►IOEIrA■1■/IMaa■/iMOMNMw/i.MEMOaEaN ■rw■MMMEEMEMENEOI.►./:■M!/■tMEMIIM!/■OI.IMMe:N■OOr:wMMOMOI:NOwMNwwOO-.MMwMMMMOOE■ ■eawOEEE■MOaSEI.'�'.//MIA■/MOO�I/O:aMr:■■11:.1■■/iMMEMOr:/NEMOrMO.�.MEMEN0 / , . ■■NNNEN■■MEOt' i,� A!.M'.wMMMMM�Ia•'SEMI/Mi/'.tt_M_Ir%_ME_NM_Mr_a E_E_M_E _Mtn!. _E_MM M_ttM__■ _.Nt ■ ■o■wME■MMM' I:■IANMMMOMEM'.o/IEr'.iM/I■_MAIL,Iwoommumor- E_E__M�__M_E_�_E_O_E._�■_E_�E_O_�a_U_wM_O_M- ■EMMOMM� ■ENEEMp- ./�.MMa000MN■r'�M'. /aIMUDS'/11■■I'.eO MEN /%/■EMEeM■ NNE►:..aMME a■ENNNME■ ■_ENNI' ,%.NMMMMMMMMeerl■:■ ■/!N■■!I■■Ilr :r /NNE E►. ONSEMNEEND :.don■Moo■■■ll"!�M■ Sold BEEN MENEEN■P AVAMP /MINE/iMMON•:I■I Mw■'1.:wMMMe`NM.■E■■E■■eMeeee■ .N/M MM■ ■\EMwaaEMM■ENN■somas Fir /w'.MO%wop: ■Otr-ndies■I/�/NOeMEEe■ ■.E■■M■w.M u...r...I a .r..M av A.r.-A.■n.r_■r■r..... �......■..n.....M-........ ■■tM■■■■MUM■■MMMMMI/!II/M/dtr"MEN!iaNNN";-SIIMM■tMrriNMM ONE MEMeEMMMw��.EMMMMMMMIM■ ■■w■■OEMOMMEMM000►/'.M!/r:Me!/OeIANe■■!•11■■I■■E!i■■■■MEOO■■E■■•�:/EOEOESMttMOEOM■ ■OMtNEMwSM■EONMNI/:r :M!/Ml.aw►.Ewa.:■■MIIEMI-_.......N.■...-:..NE.n....N.M....r�. ■■MEaUMEMM■■■■■i/,/I/:C►i■\/A■N■BEMUSE, logo Mwww Mao..MMI_.nw. ■■MEMEMNMMMEEE•.�/I/!/E:■■.�.■.-Ata■N■r:.IEEENow■Ewa.--.a.NNN.M.Nsv ■Mw■.E.M ■■MMEEMMEMMEN•.I�.E:N:lra/�NMr:/■OMO..■■IIEMwt■■M-.E■N■eewetMN■■eaN--=..00M■ ■e■■M■■IEMe■i!/ //it/iet•.NM■■. ■EMtM11M/•-�.MEM■■■■■■EeMNr.M7rl�_ ■!MONO■■ ■MUM■■EOM/.//i/�/A//iM■r-iEOO■■.-".MEE■■11■■MNOSr--".■MS■■SetEE••---..00M��MMNMMU■ Now E■aEr//.!Ii/�.!.Ew-:SEEM.--.NOEUNEO■MIA..-_ ■NOESMEN.. �.■ENMOataaUEMMMMMOEO■ ■NEM■EI'/isI:/.a.:.MMN�-.■OEMMweO.•-=..1■■OMEerM rM.MNSOeM■MESON ■ MEMOS OorEEEwo■ ■MMSao, •ii:A�.._.MrM-.wtiMMEN.-=..MM�w.••---..rOO�■■■NNESSEE■■MESON NONE wattNNeEN■ ■eMy .�.■-.N.-:.■iEN.---.rE:.-_.■■ElliiittNEteeEMMeaEEeMEMaMMeeMEEMMMeEMteaM■ ■EMIT :� _./=-.■owMENEENEE III Isom Moms MEN RONNOSINESS M■M.N■.o M■■..■w.wN■ ■• 3a-..■MEE!!IMOEeMEeteEMMewMMEMEI1MMMw w wNEw■■EE amM NME EEEEEEUwNMwwMSa.N aEE■ --...EE�E.w■.....w.■..M.■..■.w.M....■1 Imams .......■..u■..w■■■■■.■.....■.■■.M... 1 1 1 1 1 1 1 1 1 i 1 1 1 1 1 1 1 �STo2/C 7E 6 Z4/ m117 City of Fort Collins Rainfall Intensity -Duration -Frequency Table for using the Rational Method (5 minutes - 30 minutes) Figure 3-1a Duration (minutes) 2-year Intensity in/hr 10-year Intensity in/hr 100-year Intensity in/hr 5.00 2.85 4.87 9.95 6.00 2.67 4.56 ' 9.31 7.00 2.52 4.31 8.80 8.00 2.40 4.10 8.38 9.00 2.30 3.93 8.03 10.00 2.21 3.78 7.72 11.00 2.13 3.63 7.42 12.00 2.05 3.50 7.16 13.00 1.98 3.39 6.92 14.00 1.92 3.29 6.71 15.00 1.87 3.19 6.52 16.00 1.81 3.08 6.30 17.00 1.75 2.99 6.10 18.00 1.70 2.90 5.92 19.00 1.65 2.82 5.75 20.00 1.61 2.74 5.60 21.00 1.56 2.67 5.46 22.00 1.53 2.61 5.32 23.00 1.49 2.55 5.20 24.00 1.46 2.49 5.09 25.00 1.43 2.44 4.98 26.00 1.40 27.00 1.37 2.34 4.78 28.00 1.34 2.29 4.69 29.00 1.32 2.25 4.60 30.00 1.30 2.21 4.52 9 1 1 1 1 1 1 1 1 1 i 1 1 1 1 1 1 1 1 1 STEWART&ASSOCIATES Consulting Engineers and Surveyors 103 S. MELDRUM, FORT COLLINS, CO 80521 PH. 482-9331 FAX 482-9382 By: Date: 0-LD OD Client: zl:�- '0 ih1 i XTT�9� Sheet No. '- of Project: Subject: e72 TYo 0 /_fo•c Zo f/oois__D ._ . I � _- A/ D I ! _ Y-Z--- / T-771 �i� - - --�- --- Li /�- - , -- 7 IT — 1 -L-- �_ I i_ - + .�—'- i I I I I I I I 1 STEWART&kSSOCIATES 103 S. 9 3DIRUM, FAX FORT gOLLINS, CO 80521 1 Consulting Engineers and Surveyors By: J/�z5 Date: �2 Zs_� Client: Bch fT/�nf5�ce.7 CxSheet No. S of _ 1 Project: LA/l 5 4� Subject: �aI12aC,ce 6�91el 0 4O cr- O0 Z fn O C oO F- T Z W W w O U Z OQ z _ LU I wz 0 U)- 0 Q W m or- m 0 0 (n Lij F K O (� O O ch CO CO lb M 00 O O O O In O' O 00 0) LA G^O (O CO I- r M � Q r � M O LA LA I� 3C� No TT �ppNLO vvLO0)a �rN ULgLNNMCOc)d'd �LO'tLAtA MfOO T T T T T T T T T r r O N � U II D 0000 O O O O O O O O O O O O O ;C O O O O 00008 pp �j 0 0 0 0 0 0 6 O'C 6 0 0 D� N GTDco Of fNCCONNCN'1M � LO 1�0000CD co J I � U '0p q M CO d 00 0 00 (i 00 0 0 0 0 Ln :O O CO � ul �CCONNCOehO N1oNcocn000rp_O 0�0O WM „OTTTrUTiLTACTOCTOTTO NCVNNN�CT0 imiIIIIIIIIIIIiIIIIIIIII 2 il I-LAOOLAOCO 1 0oco 0N(604 Es)6i NNNN,TTLA'rONOMNOd,1O1 010 $01 H111131 UUMOMMEMMIM, FUMMIRMED. Him MmIlwanUmm M, mffAMMMMEEMMM 93REWMEM f"IMMMMM, 11 MINWOMM", MIMI MW .1 OWN-0 �,MM H MITOMMOMMIN MEMO I IMEMM SpuvsnO%L lHad DIE ID do SCOOOT STEWART&ASSOCIATES Consulting Engineers and Surveyors 103 S. MELDRUM, FORT COLLINS, CO 80521 PH. 482-9331 FAX 482-9382 By: '49e / Date:: //Z-ZB-DO Client:P/ JC /0� 1P2/ 1..S�e S 0 Sheet No. � of Project: Li�r'�5 A e 's Gf Subject: 1 1 1 1 7! ?P'-A 495T"GNTION iVl7 �s rw ■■ass■m■■■■■■mosemm■■mt■■■■■tmHamg■ +./ '.ema■IseeeAmmo■■ ssmeaeeemeoam■/:ass■ ■/■■■memo//aamemmmmasmmsammmemme/eaa/■ ■I� Im •.memo■■ Ass■mmaamm■wsEvAmmm■■ a■■■aaa■mmamamaammeammmemmemea■■sm/■ ■ �00117F ■.■■a■e■amomm was, re■■meme■■manngg■■aggagm■■aaataeattaam■a■/■1/ fir■■■ma■■■■/■■■■■■■■/■ ■s■■mmm//■■■mmttamaamaa■mom■■mmm■mmmte■ a /ea■■mmaseemmma■mnmommo■■mmm■mmmog■■■a Ir m■■ �.■■■ ■■■■smaa■ I.mssasV.me■■■ uu....mm u.u.m. u.u.ouoeu ■� ■urmm uo .0 seammemo • m■■u•.u■u■ ■■aesssammgeeessmssmsessssssmee■\■ Ise/sse'Is■m•dses■ �.ssssmes■ .egn000■ e..mm........em........w... NO ... ..-�. .... ....... ......... ... • ........- .e■o■eeo..■m■■eeesmm e■meee■ em m■■a■.■vmm .■r. ■ma•�mmeme/�mm/■/mm■e ■ .mom■/memo/'.■ ■ng/mgssmm■nameeaae■msmmmeessemono 'ArANA m•.Iam!■■saledmnssnoaes/it■ el0000nn►�o■ meeama■/■mmmmaaaammom■■mmm■man■m■meavone amoral ©v■mmeaa•.memme■am■■.,ame■ m■■■me.m•..me.■ ■■�a�■■■mmBmamammmssmemmaammsm■ma•.I.e■■ms'.al 0".amm■mI■amame■a■s►eam■■•.1 e■ I'.w■me■■ ■mmmmeme■mmmmmm■■eme■m■■amaeemmta■■maimAaevmarl.mammevra■e■e■■evema■■•.a■m • .memo■■■■ maa■■■■■some■e■■ame■■■■ameeee■meme■emr.mom■emm.■mree■emw.emmm■mmm1.■■am•.■mm ./mono.■ ■■mtemnn■■ttmmmgassssemsstsmmeeO a'Imdss l.m me'.melemo'.sememe■e/�mem/:og■ .moga000r, memo■■■■■me el■■■■■■eeeee■eee....eer.Iar.ea ...rr ..■mL■■s.....Ia..rl...■. .......•.r. ■tmaeaBmom■gtneataamagaassttgamegddtdeg'.ss/YIBse/dlsesmsa■/lsss!attaa■/Isonog■/iog■ ■■a■/me■smmm■■■■■mmemmaeemmmmeY■I.■,■r.me►sam:■$■omen■a■aaals■■m•.mamm■■!sm■ ■!.■omen ■■■■a■■■memo■■m■■e■emeaamea■■ammyeaar■aAaer.■■r■e.eeaa■■ml.m■m m•.e none l.■■me � .mm■mm■ ■■a■■eammmaa■■■■eeee■■emsmammr. r.m•.em•.■■v■■■r e•.msmmea■!■em O'.ma■/me►Ia■ /maame■■■ ■mom■■■■■■mmOmemtnano\mane■■/t/aD■■Im/a/Betll,eammmm■:■■■Ieme/mm•.mam■ ,amsteao/� ■mme■■e■emsm■mmm■■■■/■matmetoanor.'.■'d■edmt'eeaOno ■osomme 'Omar Ida nm■►:man!r e■ .■egamema■ am■mmmaamememmmamem■aeamea■vi a. ■■•.mom•.■ma■r. ■■■emr.m■m�.aeemel r■■aeal'.e■awm■■..me■■ ■mmmme■eemmamea/■■■mom■mom/■■■•.'�er■..■me.,■■■a►ar■■memo/eaes:sse■■:memBass!rm�I:a/mm■ ■■teamaam■■tmtmm/m■mmm///mI/a•.mvam/amam►Mormons ea■■:a■am/.s■■n■vi■■■ • rmmssm■ ■■mmmattm■am■■■mom/■■a■emm'irl.■m:a/dma■/rmmrme►ras►e■■■■rea■/ss!rmm■ .m■s/n/m■ ■■ammo■/■■etmamemmamsememr..,■�e•.■■'yam■r�■amr/►emm.a■=mo-lmemem►:aema■ msm/mmm/m/ ea■■mee■mmo■eaemom■saem■smem■■■/■■■■mmm■■■maemomwnmmmm■a■■mm■g■■m■m/■oam/■o■/■omam■■oee■mm■■■momes/momo■eo■g■amagmemme•i►i/.►'v.a..m•7..re1..■•■..mIe.►esMr. sump a■n.atAvon s■:■e•g.■ea■1 a■Aa. MEOW eeeam■lrrr/l.am:res-g.ee:mae.meme lsme/.mae■:mOa•g.mm!■omveeaa■m,■•mam►.maea.mme■•a.w■►meeImte•meaea.rmemm■a/N.omm:wmmmt'■ms.ma.Aag.lim■osm■■ om..n..m...■.■.■.memo .me.m■-■n■.■■ memamame■■mma■■■■■a■mesa.•.va•.■Irmm/r■■a■■•.■me►.■mar..gags:eme■■me:amemmmmmer:maa■mammeme■ s■asae■■mommmm■■■memoml0AV.Aa/Ism►rtae■■:mm!al■a:e^m7►dam/Stmrmttatmal:m/same ■■ri m■■■■aemmmmm■■■■■tsa�m'e/.■/r■■!a■■■■I:■■•. NMI /.amml:asemal.■■am/■■ris■es■ .- !rm■ mmm■eatmmmm■■■mammm'e.►.a►emm.■■■■m1:■e.■■grammm!reemmw- mom mmm■r:■mm/m■ ram■■ ■■a■■■■■■e■■■■■mee■•e'.11►■mee•.■ammave■v.■■■:.■memo-.■mmae!rasa■■m.iaae■eeme■ r■■■ee■ meaeaemaammmmmm■eml.•.�■re■..ens■■veav,mmev,ore►mmmm■r:amam■mlim■eemememmr�ammaameeme■ ........emra■■■U .�.:O'am !Immmm■rdm!amara■a■:mmmm/:■men■■er:/■■■man■■�rmes■■■ssmmm■ waaaae■■em■■■am. .. I.ae•.■■■meme■IrmoI.■■m•.sssl.a■mm:rae■a■v:a■■■a■e■Idlr■meNOW ■mmm sssa///■■mmm■■►.!•.vim►:/■■■//►rs:■■/:a■■:araa►:msasme/:emme■■mm■rimimsmm■ � .-. ■■ttema■■mma■•.'�'.!rll:a/memmm/►am'�mm►/■a/:■■l eimammom/:I■amen■/■�.amaammm■ .slim ■nsa■mmmm/■/'././ie�.dIamong or. av:am:■ms:soMe, aaaam/:reammm■a:ri■■mmtmmm■ .soma■ memseamm//m�.:m..mmaamamem•.■re■I'.■e►•a■mr.ramame:Mae■■■a.is■■■■■a■a■■mem.mme■■■m■me■ mmm-_emamma■■m/'•.:aga■Sam me/eia•.m■•.m■►:ewm:rmasr-eem/■■■:rmammaemaa■�:■m/m/ttm■■em■m■ mamm- .aetanasaatml:elime:■t-.■mal.■ntPSI ®mues!.■mamemtam■� mtmamtmma■ mmm ssm amasses ammevu.v w►,■mel:am■,Om Mel aam�rsem■ameosmr.. o■moo ■a u. ■■mmm■ommmmma■■■mamm►norm'.•/:a■/:semm�r■®mlv�mmeamat/p.�r/■■mom■gone■■/■ r■ems wass■■m sem.u...■ rer.Irm'....■■I,■mv.a...r_ N.m■■or.....■moM um.mm<or■ o■■e. mee/■amemet■■■eemg/el!aArm►rm/:sea!rt■■meiaPBoaaal!:stamammmnamgtav�=.■ogoaMasson mmmmmemm■mmmm■■sor rdll', mis/:me:swm►rmmms:rm■elm/mm:me/■mee/Om/mmm■.�imamee/Amen/memoAmen■ ■■mmaem■/mmm■■■■//ilial.■m.mmel,memee.:r■■■Met .=.mee/meemee■■.wm�.■■mee■mmmem.mmm..r�. ■■amOOem■mmataal/ „//iCvi■■Lammr-a■te■emm�ommmm.mDm...�Se...mdma.■.../■■.....f� mmmm■■am/m■ass%Irlr!r■:emli■me-.■a■■■.-ammmaumemmo.-.emmeeemaesae ■a■■■■. mono on aio:!r/►ie/I:r■m■■,-am:/tag®/a1-.aa®■®emmmmm//mt�y�ie•_-.e■ai■ ■■■mantam■esi!/iPr/:■►:■a►:saosl:reoaaeetmm:is/C■mgaaemmseam■/ma ■iimames■ ■■a■■■a■me�m:•.Ie•:a.sliem�.mmem��..e.....-�.mmesea.meemmam_...e.�- ■sae■■m■aP�.i!A!r m.-smmm!:■gengaw--■meoaassgoos_esmae__.eeoesgg_® _...■ma■ ■■■neon■I///:Ian/vieml!ismee/ae-:smas-Am®me■■a.m��rsmAmon■®mmm.. _-�mme■mmmmmmm.w ■■■memo■//�.!e:ai: ..w _ r..we■.s...-_ memo■■■•■■--as■mm■sSEE ■■■a■■/�;�:o:e:.■o-e■■mm-.se■•mom■■��--..m■■asn..-msea■//■/mmms/■■mamma■■sae■ mom■■■/_r■■m_.s■■m/■■.��..emae.m�__i,mr■mmmmmse■■msmBOmma■■s■■■■ea■■a■■■a■ ■mom/<!..:.o-'_0�_��.'�-°.�.�G__:...erw...E..m■mm...m.■.m..■.amemamee■awmm■■se■ ■smI•■ _....m--,.am■■mmmm■■■/menmmm■sss■■em■e■em■aew■a■■eeeamemmm■me■ mee• �-.mm nowmon■�mossammes■mm■mmmm/■/mm/■■■■■ma/■/■/masemam///mesam■mamme !' emMOMSOemmm■www/ssonm■mamm■■■OMEN■ma■■a■s■m■■eae■■taasmmmm■ommo■mmas --...■meni:m■MOM ■em■■..m■emm■■none■■■m■WOMEN ■mom■..mom.■Mean ■■■..■....■■.■■■...■ ' DRAINAGE CRITERIA MANUAL ' S0 ' 30 ' z 20 W U ' W o. 10 z ' W a O 5 co ' W ¢. 3 U 2 W H ' 3 1 !O RUNOFF X7 M■■■■■111WA 2 FAME ,�■ I I 010 ��■� (MEMO . = ,d = I, ,�■11111� �� � �I110�f1•�l�■,■■Ii�I �����■�■■�� ���■■��■►ems►�■■vwP�■■�■i■■■■■■� .2 .3 .5 1 .12 2 ' 3 5 VELOCITY IN FEET PER SECOND 10 20 ' FIGURE 3-2. ESTIMATE OF AVERAGE FLOW VELOCITY FOR USE WITH THE RATIONAL FORMULA. 1 1 *MOST FREQUENTLY OCCURRING "UNDEVELOPED" LAND SURFACES IN THE DENVER REGION. REFERENCE: "Urban Hydrology For Small Watersheds" Technical Release No. 55, USDA, SCS Jan. 1975. ' 5 -1-84 URBAN DRAINAGE 6 FLOOD CONTROL DISTRICT No Text ------------------------------------------------------------------------- l2 . UDINLET: INLET HYDARULICS AND SIZING ' DEVELOPED BY DR. JAMES GUO, CIVIL ENG DEPT. U OF COLORADO AT DENVER SUPPORTED BY METRO DENVER CITIES/COUNTIES AND UD&FCD ---------------------------------------------------------------------------- 'SER:Alex Stewart............................................................ ON DATE 12-29-2000 AT TIME-10:30:42 ** PROJECT TITLE: SUBBASIN 'A' ' *** CURB OPENING INLET HYDRAULICS AND SIZING: INLET ID NUMBER: 1 ' INLET HYDRAULICS: ON A GRADE. ' GIVEN INLET DESIGN INFORMATION: GIVEN CURB OPENING LENGTH (ft)= ' REQUIRED CURB OPENING LENGTH (ft)= IDEAL CURB OPENNING EFFICIENCY = ACTURAL CURB OPENNING EFFICIENCY = STREET GEOMETRIES: 1 7 STREET LONGITUDINAL SLOPE (%) _ STREET CROSS SLOPE (%) _ STREET MANNING N = GUTTER DEPRESSION (inch)= GUTTER WIDTH (ft) _ STREET FLOW HYDRAULICS: WATER SPREAD ON STREET (ft) _ GUTTER FLOW DEPTH (ft) _ FLOW VELOCITY ON STREET (fps)= FLOW CROSS SECTION AREA (sq ft)= GRATE CLOGGING FACTOR (%)_ CURB OPENNING CLOGGING FACTOR(%)= INLET INTERCEPTION CAPACITY: 10.00 9.18 1.00 0.99 0.50 2.00 0.016 2.00 2.00 9.03 0.35 1.99 0.98 0.00 15.00 IDEAL INTERCEPTION CAPACITY (cfs)= 1.97 BY FAA HEC-12 METHOD: DESIGN FLOW (cfs)= 1.97 FLOW INTERCEPTED (cfs)= 1.95 CARRY-OVER FLOW (cfs)= 0.02 BY DENVER UDFCD METHOD: DESIGN FLOW (cfs)= 1.97 FLOW INTERCEPTED (cfs)= 1.67 CARRY-OVER FLOW (cfs)= 0.30 r STEWART&kSSOCIATES 103 PH. S. MEL9 DRUM, FAX FORT gOLLINS, CO 80521 Consulting Engineers and Surveyors / By: J.%G/f1 Date,,: /� Client: /c rr s >d Sheet No. �of Project: G a�/'�g Ale6 p� Subject: � f�'LL iP/.d/O�F O l�N /ON 1 __NDi r L_1 i O ,_ 2... /�r [ ;,c- r!c-v7-,•¢ 77v 0 c , I �'iT�- 1 .T� � I T�1- _ _• _ �t�-�{ 'Y I � � �--1-,-�.�V �y/ /FV F=:-_� MMOMEMENSISONEEP Emedal.■s..■.Id ■aa.....M..■Id. .aased\eMe.Ir■a ■■osonsoM■Ir■ed ■.■nose.■!.amen ... ....... . ■.■. • .■.■.•./ ■deader■ .aMe\aM /.■ nataa�:do ./Omannaoriom ■■■■I/■■■ ...■■.■.'...■. � r■■■■.. ■Mass/iOm■ ■\\\\\\\ttl\\■■\■taM■\■t■\\\\\/IDaM/aadl■anl ►,tat■\!\:d■\/deed\\!/\!■ dataEaata! ■■■\\\\\\�/\\\\\\■t■■EtOmOm■■tr1'.■'IMO/nOm1■■Mal ■tnttnEitnal�aOmOm■Iiaaan■ .�anaOmOmOmt!rOm ■\\..\\..�\\\\\\\\■Md\useds'I'/II■I ssl,sass►/1■Md■/I\\\:\■■\\!.\\\\■!de/:/sees ■aasatEMtM SEaaeEMa■M s■usedl/■'.■I■MI.Ed■Ir■r'■M■/d■■I:u■E.I.\.■..Ii■\■ • d\!■es■ ■■dddedeMMsaaaaatattEatatl. r,e la'.eO"/uaa['�Osal ■I�Ms!rs�aD:.sssuliOPPsdsU . Emmaus• .\■ddM.ss.s.a■■■MOM■■aMI.I.d/s/E►eatddsseaa!I aM :Mtaa!ratatldttdaad!�ee■ • NOO■ MEN/ Al"N"Ur am MeWHO detanatt■ ■■ds■■.■s.aa...■s.■s■I'./r•.■/I■■/d.■■■■•.■■I.■■■Ire■s■:.■s\■.:■s■■■/■sI:\■s■■s.■\■ ■■■as■da■.■■Oasdsee■/�.III.rf/dtE/rettaeiea!rfl ■O!�^191dleslsldessededl:ssOe■ ■eI: ■asset■stMEassa\taus/E'II.a ldus!■ssusdids•.■■I I/e■s/!■■■s.►..serfs■sI'/sees '_•I IMMUNE MOEEatO\sMOOOOest■e'iI'.Ia/aOM!la■at/'ISC-.■■Er rtOs!ddOe\s!.atuusOl:.�\et■ rMeM■ ■\\■■Me■■.sa■■■.sl.•.I/I/■I:..e..■d■Id..Id■1 up, doss■Iis■.s\\I.■\\\■■■ss��■\\■..\\■ ■■■■.eddMMa■\deal.!!E!sa!�s■MEOIdM!.aOlra■■!.■cell■\\\■sly.■■\■■\■.add■■send■■s■ ■■daOMsss.■des►.::/I\Ideed.uM/d■:s■I•.ssa:■Is■I:Meeesl :ds■■■e■■I�.■■O■■■ • I�� ■s■■■■..s. u.• r.'✓dticr..u..Id■•..7IOiIi■■I /JttE■OLItdMasss!.ea■■eet■ tea■ ■■Eaatatt�n/".•'./iOm�.1OmOmaanna�slJOma!taOm!.aadr dOMMMI'rMaMlMe/-/MeMEN ■■■-■■MOa■.sEes■ase.■.�■am'i1pi' .■■Mi.;'�■�i�ue•.d■d.t!■o\!IN..IIrIllIU�■OmusUOm■i■ssto■asastst■sAtstus!adsE/dOm■■■I;■■/lu■d■dTraO:aa'u.1..1t•t.■. ■I■/eu;•■i:.a'Ela..IIa\.sa.Otdl/.-/s!add.■..■!\u!.trIrl.:sacav■IrOs■s'iEP4lItI_a■n'■oI.ert��dE■/Mtrst�.tsM.t.aa!■e.ad:/E.al.ua.a�ttI ErEuE!\tt�l/■�.te.�t..OmssrOmse.t.aeawt.e.OmeOOm■��0.uaOi0■aO.0.a�auO.\it\.E■a■d..etM.Ie.�eau�.ttt.Omtsut. naaa■ aas■0rttMata.Omaaa�■e.ttMt.ate■tttMt.■■■■■a■■e�. ..■..sssu.d■■ItsMM/r•.d!rl:Md!.■sldtesd!rM■■1■Me!i.daEMMlsaaee■.!:r.eettsaesaeteM■ ■aEaE■■sM�.etlleslr ieiE!/el�s.��s.sly■■...■1.�...■■..■.....�_..■/.■...■.■..■..••�. ■ss■■■■sus■dell■E/:/�/iC/i UldM.e�i.EE■U��.■.■..aY..r.�:w....r■■u...rar.... ■l_ ■ss.ssse■.less•./ar-.:s!dMI:■■/'■aeatl;d■■OSMtatsl�:■aea■d■■tee■aa s■. r ..ass 00OM■ ■■d■■tatt�adir:/�d/ialiaOmlistaal!rtEasOOtdl_�■MMadueOMdeMudd■\ uss■ ■a\aseEtt/I/ir'd!rliel'rtnd!ianOmOmaOm/!�.ta\naOmaattnaaa■�_�..OmaOmaaOm■ �.■sta■ ■■saa■■■////ir'd�'i.IiE■Mai.cued.!'read.sasdedM■.�-...s■■usau■■..�-� ..ss■■sssss.■ ouul�:'.!/:11-.�Iz_rd_u�_.uouav--.■.uun..--i mower ./■OsaOMelaess■■.saaasM■■esselaaaeaM■■e■■aaleddsss■■assess.■ � w'� alIMMMMM■MEMO■■MME■aoMoM.MMaMMEMM■■OM■■..s Ml•M.■OWE.■E■MMM.■a■.......■ DRAINAGE CRITERIA MANUAL �61asZ/7 H rass :5�2le �r- 50 30 t-- 20 z w U cc uj COL 10 z w a O 5 to W ¢ 3 O U 2 c W I- 3 RUNOFF FA FA FA M ►I■■ ' I �MII= ■■■■� .2 .3 .5 1 '� 2 3 5 10 20 VELOCI Y IN FEET 1PER SECOND FIGURE 3-2. ESTIMATE OF AVERAGE FLOW VELOCITY FOR USE WITH THE RATIONAL FORMULA. *MOST FREQUENTLY OCCURRING"UNDEVELOPED" LAND SURFACES IN THE DENVER REGION. REFERENCE: "Urban Hydrology For Small Watersheds" Technical Release No. 55, USDA, SCS Jan. 1975. 5 —1-84 UR13AN DRAINAGE & FLOOD CONTROL DISTRICT i 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 T 7Z City of Fort Collins Rainfall Intensity -Duration -Frequency Table for using the Rational Method (5 minutes - 30 minutes) Figure 3-1 a Duration (minutes) ' 2-year Intensity in/hr 10-year Intensiy in/hr 100-year Intensity in/hr 5.00 2.85 4.87 9.95 6.00 2.67 4.56 9.31 7.00 2.52 4.31 8.80 8.00 2.40 4.10 8.38 9.00 2.30 3.93 8.03 10.0 7.72 11.00 2.13 3.63 7.42 12.00 2.05 3.50 7.16 13.00 1.98 3.39 6.92 14.00 1.92 3.29 6.71 15.00 1.87 3.19 6.52 16.00 1.81 3.08 6.30 17.00 1.75 2.99 6.10 18.00 1.70 2.90 5.92 19.00 1.65 2.82 5.75 20.00 1.61 2.74 5.60 21.00 1.56 2.67 5.46 22.00 1.53 2.61 5.32 23.00 1.49 2.55 5.20 24.00 1.46 2.49 5.09 25.00 1.43 2.44 4.98 26.00 1.40 2.39 4.87 27.00 1.37 2.34 4.78 28.00 1.34 2.29 4.69 29.00 1.32 2.25 4.60 30.00 1.30 2.21 4.52 1 STEWART&ASSOCIATES 103 S. MELDRUM, FORT COLLINS, CO 80521 PH. 482-9331 FAX 482-9382 1 Consulting Engineers and Surveyors By: —/aGh Date: / -Z9-�D Client: �F"'/ Sheet No. ZZof _ 1 Project: z4v�11s /Y G 1172 Subject: 1 ��-•� C. _'_-8�'•►%a_ 1 1 1 1 1 1 1 1 1 1 1 1 1 1 + T - (:2 _ --��-- i 1 _ 1 , I1` l TITF-I i p _ I I -JI ' I �I I I I 9 ■M■/Ott■■/I■■■■■■MtENMEngIE■Et■■eno IMF '.■■I■/M■■I/MEN■ ■EE........��_�_____ ■■/■■■■■■EON■■tMEE.00EO■EMO■■■■■■■■■ ■■EOIE ■■■■ L/■■/■■■■�■■/■II■■■■■ ■■■■■■■■■�■■■■■■O■■■■■■/■/■■■■■■■■■ ■■ ■A ARMS .'•■.NENEENEENo■►ANNEso'■e■■eONEMMn■■/■IEEME■E■■EONNEEMN■■■ 1�mmummummm0 I■■E■■■monomo ISa OMEN M■NM'amN.'MME.....MEE.EMME.EEEMNEEE.■...■...■■■ ■on IF /0■ •■.■ ION■■■■■■ .M.w.. NNOM..M......I....w.EM........... r.... ..... ... ■....■.NMNMMEEMEE. NN.EEMOME...MM■.I.M.aw... MM O'IN■■E■/.MMM■■MONO ■ //NMMO■I'.■ ■Eel■nnEM■■MMEMEo■■■ Eggnog ■■■■ son ■'ANE/AMM"I onI.MEO■EM/oEEMMOEgo1iE■ ./■gang■►Lo■ ■■■■■■■E■■■■■■■MENM■■MMEEMMMMMMMI/IOI■■I/I.I/.E■■■•.■.■■...■.IIMM■ ......■•.Oman M■MEN.ON.M■■■■■■.■M■■■■e■■■.■■■MM'11, ■I ME■'.■I E'IME.■■I■■.MEN/../I■■E EI.OM. I'.WOMEN ■MNMMEEM.MMEEMEEMMNMEMMEMEE.MM■MI.IEI■eE'I■■1 IM■MME.EMNE.ME■/►NEON'.■NE .EMEEMEE ■t■■O EMMMnIENMEEn■■EEMONMOMMWEEMONSOMMONE/ IE /MELEE■'. Oog■■'.g■SEE■■■/LMogI/Egg •■■■t■■■►. ■■nt■■NUMM■I■EOMtEMngoMognoogg.IM/EVNEEI/I■oNIMENEEENMI/nnM!/ngngMl "Ai nnoM■/MEMO Me■■ME■■.MM■■M■■.M..■■EN.E.NEMI.I.■I.E■IMM.I■1■■M/E■■..■.IO.M.I.MM■■■■!LM■ ■!LOOS■ NOMMEMON WS AS' Nor es uM ..■■EEE.MMEMEMMMM■.M....■■■.... I,E'.EE•.EeI OMNI .•.SEE■■■E!■■■E.eEE■■III■ O■■MEMO■ ■.■MM■■EEMEM■■EMEEEE■■EEMnnE•i'.■'►III■■'/■MMeI MOVE anIiM■M/LNnE■/iMEMBE ./oMMnoo■!L■ mm'.Emomr, MEMO ■EOeEEO..NOM.00MEEE■■■■E■■O'/'III./■./.O■■E/LIMM■M/IO■N:■SEE■'.■■■■ME!LM:►!Loom■ ■MENnENE■■EN■■N■■EEEMEEM■■I/■i■►LEI.■N■/NE/'OE■/IOMI:ENOO►...NEE ■ • .MOO.O■ E■■tnMNtEN■■E■■OEOEEOE.OeM'II/MOO►■/IONS►IMMI ■MIIEEII■■EEI/ONE■■!LME■ ■MEEEEE■ ■eMNEMMMENOENMMEENEMO■■EEr.•.■IC'.■■'IOEErjEMOI ■ILME!L/�aE'.M/M.MIiOO.E■ .00EO■NEM/ :01: MM UNNNNNE.M UMEIi �...rMr.MMv uE OI IUMLe■EME•.EMEe.IuooE .MEEEE....-. son Manor LEMI.NMM■►..MOMO'..M.OME/!MONO ■IRE■ ■MMM■E MEN N■■OMEME 000■OMI. I./IN/N►EOM/ IMENME!I■E:MEEN!L■M■EI/E■■.■/!LEE■E%`�1.EMM■ ■NOEnE■oEMottoM■■ONSONmammon •/II.71.■►/■o/L■MOMgt■/iMEMIiIEM■►IMOMM■/i11OEE■ .tMMtMM■■ ■OEMMEMeMME.EO.eE■E■■I'rI OI.■ILM■II..M■O•.EMI.MME/NEMMM!MMM.N.!MMMM.■O./:NMOENE.E.■ ■EOEOENM■N■■MMEEMMM■►/./II.//L■■ILEg■■Ei■■!/I■O!M^gBILNNMM/ILENE■EEEI:.MME■ - ■EIS ■■■EMENN■■/■■MEIENtN/I'I/./I/EE!L■MEMO: EM'.MEI ►IOEEO!MEMO■►.MEEOMMMI�.■EEO - IRO■ MMENEMEMONE■NE MIIM■n'/L'.IL►//EI.ONENE/iO L'".OMOI LEOErAMMENN!MMMMnOE/:EEEE■■ LEMM■ MMMMM.M..MEMMMNII..• I'.IL/LNe:EEOEOII■IIME/'.1■■MI.■MO■.!OM..M.EI:MMMME..:INMiiiiiii .■uMME.■MMu.■IIE. .I.I L..■EI:E.■/.IL■►/UI dal .►.EEME/iME/EO■/ iEMM.MM... ■MOMNMMOEMEENEEIII ICI./iME!L■MM/E►LEIL■M/LMMM!MMMEIiM.MOM./�N.M.MM.M.��M.EEEME.E/■ ___ E.MM'.■■EMN■ILEI.EMM'.NM■/. ■EOM!LEOMM■I!N■EMEE■EI!.OMEEM■ Simi mosummmunwor .VAMP, 09 ■ENIMMEMENOMMI /'•"I!LM!NEE■■■■I. L II'.eEI/MEIi■■1 I:/EMtnI .N■■INE ■■■■■!.■OEONEE■ �. .E• '.MMMEEE■MN' /lrII..EOEE..M!■I/MM'.EO►IONSIII..■MlOO■.M■■I�O�.M.MM.OMEM�.O�MEMMeE■ �EEENNEEer, .!L/:IMnME1OEEM1■I/MILtM to/i■■EmEp-IIE I'Longn■/!.■nnoMgt U■■�`N■■tE■U MOE■ ■O■■I` �!..Mt■IZoss■e/i■iNI:■■!/■ LtgM I-1 Eon MMIi.EIMEEMNE■!./■EMMEEMN ■M• _..MMEMO ■IIEMEMM/I/INIAmp .E■/:NNEM�.iI ■MMl.�EM.EE;M.EEEN■■NNMNNOM .ENE■ ■■MEMEM..MWOMEN IIOoM■ILILMI..■!/■N!.EEI!L■NMI .�LEEEn■EN■ M ■NMEEEMEMEMEE.uM■MI a .r... aE..EME ..EMEr_.E.M...EM .E..M..E..E..EMMI �.EEE..E. ■omENEMEE�Mnt■■11■■II!.I/IILM/:.E/l�INMM/..IMMMMM■!.Et■■EtttMlttlMM��NMMgntIOEEM■ ■e■■ENEMNonummoIIMF LI.ElLI:■■!LO■I.M■nt!.MNMI EEO!i.■gEEE■E■■MENM!�N/EEEEEEENENEEE■ ■■■■■EON■EINME■■.;/i/�/:�/i■■Iy/EEIi■■nEOEIommum MEMO EENMEMO-N_amm.ENME�MM..E..LEr..E.d �. ■■MOM■■E■EIOM.'.I.II.O!R!LM/:EEI!■NENE.,.MeMNENEM■•o./ENEEEM■EMENNeN�� .M■tE■ moms MMeM MOM■III" i/i11i■■I:.MMMM�N■■ENEEEE��1■E■OEM■■■■EnEOOEnME . ■tMMEEE■ ■MUM.ON.M/'.'.I.'.;01%aw-am-_MMMM-s■MMEEM.-_.MEENMEeMEMNMEMENE.-.E EEMEM.�- ■■sOEEor I/.//i►-_IP.Ii.■N!iNE■■■■m"N■OOEEEEOE■■■Mm='.MEEO■■EEMM.•�_-.N.eOOEEeMMME■ was moor ii.!/./..!...-.uur..eiioMEo.v-- .■u.iuo.---.w■oiuuuuEEMuu■ ■■N■■MI/ ■I�N■■MI�.MMEN■ENEE•-=.NME�iEn.--..eE■MENEEE■ENME.EMMMMMMMEE..N NEW, o► - z _. meammsomm 0 VENOM ME MEMO on MONSOON among SEEN MEN ommoson wommoffinumm ���./!./. NEtE.._.NEM■.__..■.■ME■■EE■MMN■■M.■■E■■EEONOOMEEEMM■■tttNMEE■ ■'..-�i..■I■MEMO NEEE■■■NMEMEO■■EEMEEEEMMNE.EMM..■M.E.■■NEEMEEnEME..ME■NEE..■ I DRAINAGE CRITERIA MANUAL RUNOFF 50 30 f- 20 z W U W a 10 z w IL O 5 to w ¢ 3 O U 2 D: w H Q Q 1 5 ct razl,; J / c S=D SOZ r � U■■ I ■■■■� milli FIGURE 3-2 2 .3 .5 1 !2 3 5 10 20 VELOCITY IN FEET PER SECOND l� ESTIMATE OF AVERAGE FLOW VELOCITY FOR USE WITH THE RATIONAL FORMULA. *MOST FREQUENTLY OCCURRING "UNDEVELOPED" LAND SURFACES IN THE DENVER REGION. REFERENCE: "Urban Hydrology For Small Watersheds" Technical Release No. 55, USDA, SCS Jan. 1975. 5 -1-84 URBAN DRAINAGE & FLOOD CONTROL DISTRICT �e e��1O G 1 1 i 1 1 i 1 1 1 1 1 1 1 City of Fort Collins Rainfall Intensity -Duration -Frequency Table for using the Rational Method (5 minutes - 30 minutes) Figure 3-1a Duration (minutes) 2-year Intensity in/hr 10-year Intensity in/hr 100-year Intensity in/hr 5.00 2.85 4.87 9.95 6.00 2.67 4.56 9.31 7.00 2.52 4.31 8.80 8.00 2.40 4.10 8.38 9.00 2.30. 3.93 8.03 10.00 2.21 3.78 7.72 11.00 2.13 3.63 7.42 12.00 2.05 3.50 7.16 13.00 1.98 3.39 6.92 14.00 1.92 3.29 6.71 15.00 1.87 3.19 6.52 16.00 1.81 3.08 6.30 17.00 1.75 2.99 6.10 18.00 1.70 2.90 5.92 19.00 1.65 2.82 5.75 20.00 1.61 2.74 5.60 21.00 1.56 2.67 5.46 22.00 1.53 2.61 5.32 23.00 1.49 2.55 5.20 24.00 1.46 2.49 5.09 25.00 1.43 2.44 4.98 26.00 1.40 2.39 4.87 27.00 1.37 2.34 4.78 28.00 1.34 2.29 4.69 29.00 1.32 2.25 4.60 30.00 1.30 2.21 4.52 1 21 ------------------------------------------------------------------------------ 1 UDINLET: INLET HYDARULICS AND SIZING DEVELOPED BY DR. JAMES GUO, CIVIL ENG DEPT. U OF COLORADO AT DENVER -SUPPORTED-BY METRO DENVER CITIES/COUNTIES AND UD&FCD---- ---------------------------------------------------- LER:Alex Stewart............................................................ JN DATE 12-29-2000 AT TIME 10:28:49 i L* PROJECT TITLE: SUBBASIN 'C' *** CURB OPENING INLET HYDRAULICS AND SIZING: i -INLET ID NUMBER: 2 1 INLET HYDRAULICS: ON A GRADE. 1 GIVEN INLET DESIGN INFORMATION: GIVEN CURB OPENING LENGTH (ft)= REQUIRED CURB OPENING LENGTH (ft)= IDEAL CURB OPENNING EFFICIENCY = ACTURAL CURB OPENNING EFFICIENCY = ' STREET GEOMETRIES: 1 1] 1 1 1 1 STREET LONGITUDINAL SLOPE STREET CROSS SLOPE STREET MANNING N = GUTTER DEPRESSION (inch)= GUTTER WIDTH (ft) _ STREET FLOW HYDRAULICS: WATER SPREAD ON STREET (ft) _ GUTTER FLOW DEPTH (ft) _ FLOW VELOCITY ON STREET (fps)= FLOW CROSS SECTION AREA (sq ft)= GRATE CLOGGING FACTOR (%)_ CURB OPENNING CLOGGING FACTOR(%)= 10.00 10.16 1.00 0.96 0.50 2.00 0.016 2.00 2.00 9.88 0.36 2.04 1.14 0.00 15.00 INLET INTERCEPTION CAPACITY: IDEAL INTERCEPTION CAPACITY (cfs)= BY FAA HEC-12 METHOD: DESIGN FLOW FLOW INTERCEPTED CARRY-OVER FLOW BY DENVER UDFCD METHOD: DESIGN FLOW FLOW INTERCEPTED CARRY-OVER FLOW 2.33 (cfs)= 2.33 (cfs)= 2.24 (cfs)= 0.09 (cfs)= 2.33 (cfs)= 1.98 (cfs)= 0.35 1 STEWART&ASSOCIATES 103 S. MELDRUM, FORT COLLINS, CO 80521 Consulting Engineers and Surveyors PH. 482-9331 FAX 482-9382 By: Date: 7 41n IISle;-" Client: 1�la Z' -- z1Sheet No. 22of Project: Subject: o T-7- T- F + I f �/2D,�� �;�c v-�= D,ay2 �c : 2 x'� ;sGo �/g � r 10 a2195 ����,5� 2._y� T-- -400w—e. L 00 TJ 2 Clo-77 -4p I U 1'z- Ow, DRAINAGE CRITERIA MANUAL (V. 3) STORMWATER QUALITY MANAGEMENT 23 9-1-1992 UDFCD Note: Watershed inches of runoff shall apply to the entire watershed tributary to the r Facility. FIGURE 5-1. WATER QUALITY CAPTURE VOLUME (WQCV) I I I LARKSNEST DETENTION POND HIGH WATER LINE VOL. = 1/3 (AREA ABOVE) (DIFFERENCE IN COUNTOUR ELEV.) 2. FOR THE REMAIMDER OF THE VOLUMES BETWEEN CONTOURS (SECTION 9.2) VOL. = DEPTH/3 (A +(AB) ^.5 + B) FOR: Uniform Sides sec.(9.2) 3. HWL=(VOL.REO.—VOL.LOW CUML)*3/(AREA LOW+AREA HIGH+(Iow area*high area) ^.5) ORIFICE SIZING ORIGINAL DESIGN DATA 0.90 = Allowable Des. Release Rate(cfs) 64.52 = Flowline Orifice Elevation(ft) 0.65 = Orifice Coefficient (Cd) 4.02 = Avaliable Driving Head(ft) VERT. CIRCULAR PLATE 65 Outlet Areas hches ........... ruches ....... ....2 01 Circular: ralus VERT. SQUARE PLATE Outlet Areasq X: inches .......... ...... .... Ke ... ....... ............ ...... .. . .... NOTE: 1. VERT. PLATES WILL BE PLACED AT PIPE FLOWLINE REQUIRED VOLUME DETENTION POND VOLUME PLUS EXTENDED VOLUME = 15,228+2,195= 17,423 CF JSE SQUARE OPENING 3.55* X 3.55' I zi' 1 EMERGENCY SPILLWAY DESIGN Weir Equation Q = C L (H) ^ 3/2 ' Q (cfs), C (weir coefficient), L (crest length, feet), H (energy head, feet) 1 1 1 1 [1 1 1 i I 15 = Weir Length L in feet 1 3.1 = Weir Coefficient Weir Shape Broadcrested Design Flow 16.71 (cfs) Depth of flow (ft) Flow Over Weir cfs 0.10 1.47 0.20 4.16 0.30 7.64 0.40 11.76 0.50 16.44 0.51 16.94 0.60 21.61 0.70 27.23 0.80 33.27 1.00 46.50 �w 1 I - . DRAINAGE CRITERIA MANUAL (V. 3) STRUCTURALSMPs 1 1 1 2 0.1( 9 0.0( 0.01 #7? MEN W E_ in W, JrAA 00,51 'A PA ■101 ION: Required AreU or MA oil p" pa" r d, 0 FA 0 ME PARA m VAIN W.Hr.P.M.E.11.2r65 PFA AAPAA PFI 111mil AA P"Aiiij 82A PAN r"'. lmmmm�mm FAAAA i 1AA UFA 405 0.01 J 0.40 0.60 1.0 2.0 4.0 6.0 Required Area per Row (in 2 ) Source: Douglas County t rm Drainage and Technical Crireti41986. FIGURE 5-3. WATER QUALITY OUTLET SIZING: DRY EXTENDED DETENTION BASIN WITH A 40-HOUR DRAIN TIME OF THE CAPTURE VOLUME tire - U0FCD 8 1 1 i i 1 i 1 1 1 1 1 1 1 1 1 1 1 1 1 STEWART&ASSOCIATES 103 S. 9 LDiRUM, FAX FORT gOLLINS, CO 80521 Consulting Engineers and Surveyors /� / / By: G 1/Date: 1% / �� Client': /C f/T//7'Ji/sT�90 Sheet No. of _ Project: �dSTl2 ZTC /�1G /yd60"/2,1 a fj Subject: I ; wo VC /O/lJ pT7 G'r 1 � I I 450 I FTT ca y�Zo . r I 1 7 i � _ I j �- 7.1.. H4. -4-, I I I ' •' COVSTRUCTjo I Sr- ENCE 'ROJECT: •�S>Ca/�Q/?i?S v UENCE. FOR EF D / ONLY CO(IPLETED BY: Z, STANDARD FORM C DATE: Q-/$-00 dicate by use of a bar line or symbols when erosion control measures will be installed. or modifications to an approved schedule may require submitting a new.schedule for approval by the City Engineer. ' YEAR MONTH I S I F I i"j,I ---------------------- ---- - RLOT GRADING -I— IND EROSION CONTROL ' 'Soil Roughing , Perimeter Barrier Additional Barriers 'Vegetative Methods Soil Sealant Other INFALL EROSION CONTROL 'STRUCTURAL: Sediment Trap/Basin Inlet Filters Straw Barriers — Silt Fence Barriers Sand Bags Bare Soil Preparation 'Contour Furrows Terracing Asphalt/Concrete Paving Other 'VEGETATIVE: Permanent Seed Planting Mulching/Sealant TemP orar Sepd P1 t" KI N,I -sI-EI NI 5IzDIil-) -------- i I i W== Sod Installation Nettings/Mats/Blank,ets Other I ------------------------------------------- ---- ------------- �CTURES: INSTALLED BYO yam/ �� MAINTAINED BY GETATION/MULCHING CONTRACTOR ISUBMITTED �SF-C:1989 APPROVED BY CITY OF FORT COLLINS ON 1 1 1 1 1 1 1 1 1 1 i 1 1 1 1 1 1 1_ 1 RAINFALL PERFORMANCE STANDARD EVALUATION PROJECT: �gSIgvle 0 /TE �Od�arl�y 5 STANDARD FORM A COMPLETED BY: �j.�G`[ DATE: zQ—(s--a --------------------------.------------------------------------ DEVELOPEDIERODIBILITYI Asb I Lsb I Ssb I Lb I Sb ( PS SUBBASIN I ZONE I (ac) I (ft) I (%) .I(feet) I (%) I () - --------I-----------I-------I-------I-------I-------I-------I------- Ls6 x zle L R�� �L��,��L©��� 6 I s' --------------- -------------------------------------- DI/SF-A:1989 O 0101000 O 4 4 U' I n 111 In WWWWW 0 0101010+000000 WWWWWWWWWW o Wo1o+o1O1o1o1mo1o+o+a,000 . o ............... vvvvv��avavvUr Uu n M WWWWWWWWWWWWWWW fvn+ o o nWWWo+a+Ololo+01010+o+o1a+o1olrnrno+ N W W W W W W W W W W W W W W W W W W W W ^4O OMi n to to to 10 nn. n. n. n. nnn. n. n. W. 00 W 0O 000D n O o vvvvv�cavvvvvvv��vv�caaav� �I gw o WNM�tnlnlnlolDlolololonnnnnnnnnnWWW a 1 Mvd vv444 W W W W W W c000 W W W W W W W W W W W W W W W W W UW O IoONM V'd'll'IIL11f11f11O1O1O1DtO1OtO1p1p1pnnnnnn U W H W W W W W W W W W W W W W W W W W W W W W W W W W W a O vO1.-INMMd'd'd'a'1111nLL'ftnlnlL11n10f1[11O10/D1O1O1On � O n M c444 vvvvavv v vd d era ery 4,; V 444,; U cococowcoc00000wwwcocococococococococococowcow ^ O 10 CO 0 rI ri N N M M M M d' d' v v V' V' aT v In In In In 10 10 ' aO M\ O tp MMM44d a444d V d ;d'avd'd ;.4 V'44d d fs. WWWWCOWWWWWWWWCOW00WWWWWWWWWCo � O 1 cx �O InNlnn co O%oori.-IriNNNNNMMMMMd e-w v O o. . co rk 0 N. M MMMeTC44;C44;44444444d' WWWWWWWWWWWWWWWWWWWWWWWWWW wto w A ac EIn .-Ioor-IM -vInInwwr.r- ncococ OD CO CO 0% 0% ON 0 0 0 0 0 �0 Q Ein ad' m NNi"1 i4N1 CIMMMMMMMMMMMMMMMd'V'V'd' V' COW00OOWWWWWWWWWWWCOWWWWODODOOWWW o wInWOr-iNMd'd'inin1011O%Ow%ou onnnncococoo+ol Ea N V' 4 N 4 t4 M M M M M M M M M M M M M M M M M M c4 M M M' 00 00 00 W 00 W W 00 CO CO 00 W CO OD W 00 00 0D 00 OD 00 OD 00 W 00 00 U In .-I.-I Inn0000r4NNMMM V'V'V'v-wInInIn%o%o%onn M • ri N N N N M M M M M M M M M M M M M M M M M MA M M 0000 00 W CO 00 W OD W W 00 00 W W W W O0 00 W CO CO CO CO CO CO CO w '\ 0 O M N1O coO%o ri NNM MM�w -weP -wv to In In In 1O 10 1O 1O O.-Iri.-I.-INNNNNNNNNNNNNNNNNNNNN wa WWWWWWWWWWWWWWWWWWWWWWWWWW �� . In I01inC rNr! n1On1n00 W W C 01.C!C.O1'1�1O9C! C! {� N 01 O O r•I ri ri f4 ri ri ri r♦ ri ri ri ri ri ri ri ri ri N N N N N N n W W W W CD W W W CD W CD W CO W W W W W W W W W W W W .'t. O V'1110 Mtn 1O W WO1000.-I rl rI riNNNNMMMMMM j', �) ,1 N W 01 O O O O O O O ri 'i ri ri .� ri ri r•I .� ri ri r♦ ri ri .-i ri ri _ \ n n W W W W W W W W W W W W W W W W W W W W W W W W In CI! NCI! InnnC0O1O100ri.-Iriri.-INNNMMMMM ri t0 W W O1O1O1O1O1O1O1O1000000000000000 n n n n n n n n n n n W W W W W W W W W W W W W ao W O 1L1M0 V'n O10 riNMM�dIn In In In 1p 1p 1D /Dnnit11O 1O v w n n n n CO 00 0 CO fD 00 tO w w w w 00 w W CD OD co CO 00 O nnnnnnnnnnnnnnnnnnnnnnnnnn In C10sr%on co co nnn1010toIn -we MMNN0110d'.-Iaiw O ONNNNNNNNNNNNNNNNNNNrir;1;1100 nnnnnnnnnnnnnnnnnnnnnnnnnn - ----- -- x 3E-� O0000000000000000000000000 C7 E o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 r4v4mvin%on co O10.iNMV'In1Oncoa%omOInOIno ri ri rl ri ri ri ri ri r♦ ri N N m M d' V m . MARCH 1991 8-4 DESIGN CRITERIA EFFECTIVENESS CALCULATIONS PROJECT: �' 9a C STANDARD FORM B COMPLETED BY: _ ��Gh DATE: Erosion Control C-Factor P-Factor Method Value Value Comment MAJOR PS SUB AREA BASIN (t) BASIN (Ac) 7.. CALCULATIONS 77 K 103 V vo W � V ' MARCH 1991 DESIGN CRITERIA . , r . jr ,�- 1' t ys'O.o2a CMP 1 Solutions by Kutter's Formuls,'l= ^.oi2 Pvc— 55 . Y) 0•a157S+cc! ; vOp UCOIi IiOp � — 7 �9U 33' .0007 3v. 30' :.000J � 70 27' .0004 I I 60 1 �Y. 24.0005 4 .0006 - SO ?/� y • .0007 /.5 . • � .nGna - - 40 1 _ .0009 _ 3 /6, c .00, h � e .00i c - JO i f L - a .003 1.0 o I . 12 20 00C i aZZmoo_ /0' y 4 006 _ `tz j 1 u 4 d 008 75 4 .000 V 0.9 1 - 08 0.7 3.0 za (y__OS 3.5 C I Q -� 04.07 4.0 4 SO 4 — 0a, 3.. 1 .3 5 s = 1 0: .8 ZO 1 ze Fig. 14. Diagram for tine solution of Iiutter's formula for circular pipes t 1-: } flowing full. / ( 61 95�, O �/ Fig. is. 1 ,� LEGEND SCALE. I" = 20' nB [5 n.OA TOP OF POND ELEY, 69.2 /� a SNLWAI �:HASE z SrCEI nv=Rv, HIGH WATER LINE EIEY "5 SUBBASILy C 1 _ ________________________a_____________1------ -_ ___________ STARFLOWER DRIVE / POND DATA BASIN DATA I00-YE R HIGH WATER LINE E AMIN 6850 OESCRIPTON AREA D% O rw j CHIP 2. RELEASE RATE FROM POND 0. DES = TWO YEAR HISTORIC CHI ch J. REQUIRED DETENTION STORAGE 15.228 OF TOTAL SIT£ 2.00 2.79 T3. 19 D67 0.84 4. REQUIRED EXTENDED DETENRO It $T95 CF 5. TOTAL POND CAPACITY TO ELEV 66.50 = q,423 OF 6. RIM OF AREA INLET ELEVATION 64.50 SUBBASIN A 0.29 0.34 F97 0.54 0.68 BOTTOM OF POND ELEVATION = 350 6. RESTRICTION PLATE OPENING SI - 355" Y S55" SOLLARS SUBBASIN 6 1.45 1.99 9.39 0.66 0.625 9. DRILL I- 5/6 INCH HOLE IH GH STEEL PUTS AT ELEVATIONS 63 50; 63.82. 64.17. 64.40 FO AO HOUR RELEASE RATE SUBBASIN C 0.26 0.45 133 0.72 0.90 10. 75 FOOT GRASS SPILLWAY AEON SOUTH SIDE BE POND SPILLWAY ELEVATION 68.54 11. 225 OF EROSION CONTROL RIB DOWNSTREAM SIDE OC SULI? WAY 15.0' TOM w rIT _ Pa__ ----------------- Iw-w AM 0 SPILLWAY CROSSECTION- NTS USE FILTER FABRIC DOWNSTREAM OF SPILLWAY FOR EROSION CONTROL 15' BY 15' EROSION CONTROL NOTES: I rho nb of Forf Color HeorRINI OWAy arpvto,mw ,v,r.,ro, mur M votmn Of rn.t 24 noon powl Huy cm,rivcrm IT TAX It, ,rh (,rrcbNnq. nt) µ ewPMN,,Hm Mao. m I YNHtIH" AN," Top Room NoA.fiF To No am .p.vg IT vti.n.rtifnr. om etrveNw epnpwv. old for In. v rNH pxlrvr wn R „nm, ov 4 AT .or:. x cw ddc 4 No anf a,rvror.q •ahoy (n.spnq. n.W�o9 vt/nry �FIRAR m,. II IN % ,M r u "A"N .L m q,¢pq w MWIW eknq Rod Or"EII,'for moon. NpW Y It, Floor vmLo IT tYa4 NO 'two, :n Motor, mnvh wIM nna ro'H-o,-rvY,rbx nl,' nm,q>y FIT dbbMnq acEvbyfdr na wry (w) my", Toro ,.aaaAT o"N" ' or p"r»* ..o.Yl oanm (I v. ...e/ .,an, Tor. fro N..m) . n,blo"I " m vtn "appvwd by rM Smm o,o, unNy 5 ,M pgvny x AM Mod vtiM4p mN:Nay d ,n. vpYve MIT ovprct I �pepHim, v, ewrvrr.rr r 0 MIT ny o rr.r Cmw.. Ey.r.:nq pmnm.m ur nvpavy (.mc wr) w .w npornd of r..f µtmne. pnrcv mTa.s rmd nrmmrmw Rrn RMH,e dry avro mr and RARER, IN of f tto to Torn, rrr.. jwoM.nt fly s :rop.y ,NO) ,w,.c.AT Mo (ro) Not'n "IT mo.mn q m, mxNMTNE or g, v pmmIry uI f. anq Nor", O."Ar, Tome q R M Jo ARTY,ar1N bt MATH dN kLod mvC.ty Odvn e. pmSn rT meppq w ewrtM Gy nmu by ,mn MY op M H+Rx,.mnt amxMd mvMwr IMF a ewn.e mYornoo y q w omwom.. COOL Scasav FOUR. kIEa+Arou HILL vcc.ES Um/w �MY WYm LtR5/ WiiEA WHEAT 40 50T iB TOTAL m0 Les/K NOTES ATIsSNaR J/A NLNSTAMO LIIALNAME RDEPTH OFW•• LETS PwIL SwLL BC wINRPCO RIM A SRIEY fpl FANW.W ONE SpL OVER W NEWLY PLACED 5(EQ -- SHOO) ARIT vMLL WE AAACKo rm A piAss ME RATE For 2 IgK/ACRE ME NAY OBERs SHALL K CARRIED ." OR LORE Mro TRY AVL. AT EAST SOT OF ME HBENS SMALL BE ITT OR MORE IN IfIICM ME MTE W IS A " WEATNET WY ANO !NAL BE A1.Ww BETWEEN JURY 31 MO EEPT 20 WwRM 5'G4N, IEMPCURY AR ETAIUR TABLE SKL6 LB% AT VIA MXED (IES/AC) YULE JO 759 225 .fyNRN C 25% 25 wrAL 15.o LOS./K. NOTS. w-S EEZI S5SHRILL K DIKIBLOWA'A DEPIN OF CF eF12- 3/4. ICE ME MCL SNLLL BE [CWPPLD YM A SY52Y ipP iNWNC MF XYL b,ER ME NFMY PYALEO SLED YEBEC MIFAS SHALL BF MULCHED r m A imps E T ME ME [Y 1 HMI ALK ME SOIHEAR$ LYLL KC.MItl[0 E"OII IO IK .S01. AT LEAS/ SOE L ME HBERS YWL BF IO" CR NMF N LLYiIN. - ME KtlE MY b A'WA4Y YL IMER'WX AYp pµ[ gE pAVTEp BEMEp WY I6 AVC DULY JI. l� I. CONSTRUCT A $MAW BALE WRIER AROUND THE TWO AREA INLETS BALES TO REMIN IN PUCE UNTIL CONSTRUCTION IS COMPLETED. 2. CONSTRUCT SILT FEYCE ALONG EAST AND NORTH PROPERTY LINES AND ALONG THE NORTH SIDE OF THE EXISTING DRAINAGE CHANNAL ON THE SOUTH SIDE OF THE SITE BEFORE ANY OTTER CONSTRUCTON BEGINS MO SNALL REMAIN M PHASE UNTIL ALL CONSTRUCTION IS COMPLETE City of Fort Collins, Colorado UTILITY PLAN APPROVAL APPROVED APPROVEO:.E'� ,�,.._ C qor. �l CHECKED BY. �Lp'�QL wIUI1sA CHECKED BY A9 sedrm.dlry Ll bty OFF, CHECKED BY onx W Rocr„emn CHECKED BY O CHECKED BY Olt 5 4 U 2 � Q W 2 � R � 5 z a SHEET NUMBER 4 OF 10