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HomeMy WebLinkAboutDrainage Reports - 06/12/19981 1 1 1 1 1 1 1 I 1 1 1 Final Ap roved Report PROPMTT OF a!e , V T COLLMS FINAL DRAINAGE REPORT FOR PARK SOUTH COMMERCIAL PLAZA MINOR SECOND FILING MCCLELLANDS/MAIL CREEK BASIN MAY 89 1998 PREPARED FOR LOREN J. DI SAVER . PREPARED BY STEWART & ASSOCIATES, INC. 103 MELDRUM FORT COLLINS, CO 80521 970-482-9331 1 ' May 8, 1998 STEWAU&ASSOCIATES Consulting Engineers and Surveyors Mr. Basil Harridan Storm Water Utility City of Fort Collins P.O. Box 580 Fort Collins, CO 80522-0580 Dear Basil, The following is the final storm drainage report for Park South Commercial Plaza Minor ' Subdivision, Second Filing, Fort Collins, Colorado. Park South Commercial Plaza, Second Filing is a six lot development located in the Northeast 1/4 of Section 35, Township 7 North, Range 69 West of the 6th P.M. It contains 7.1647 acres and is in the ' McClellands/Mail Creek Basin. The site is bounded on the North by Horsetooth Road, on the East by the existing Carmike Theatre, on the South by Park South P.U.D. Second Filing, a multi -family P.U.D. which is partially completed and on the West by Manhattan Avenue. ' The existing Auto Zone store is on Lot 2-A and its storm water runoff drains Westerly across Manhattan Avenue to the existing storm drain. The other five lots will drain Southerly to the proposed expansion of the Carmike Retention Pond. The existing pond will be expanded into a proposed detention ' easement on the East 70.00 feet of Lots 3-C and 3-D. Lots 2-B, 3-A and 3-B will drain in a proposed swale with a concrete pan in a drainage easement in the East 20.00 feet of Lot 3-A. An 18 inch R-C.P. storm drain will carry the storm water discharge from Lot 2-B under the existing access road to the proposed swale. The runoff from Lot 3-B will drain across Lot 3-A to the swale in the drainage easement in the South 20.00 feet of Lot 3-A. Since there are no specific site plans on the five lots at this time, an assumed coeff cient of runoff = ' 0.75 was used for the calculation of volume required. The volume of the 100 year frequency storm for a 3 hour period is 1.52 acre feet. That volume is doubled for the requirement of retention. The historic runoff from the 6.22 acres, draining to the retention pond was included in the Carmike Pond as off -site runoff. Therefore, the retention volume required for this site is 96,986 cubic feet or 2.23 acre feet. ' When individual site plans on Lots 2-B, 3-A, 3-B, 3-C & 3-D are submitted to the City of Fort Collins Storm Water Utility and have a runoff coefficient higher than 0.75, the site plans will have to be revised or provisions will have to be made to increase the retention volume in the pond. The drainage reports for individual site plans will address grading and erosion control at the time of submittal. ' This drainage report and the design of the storm water retention system are in compliance with the City of Fort Collins Storm Drainage Specifications and Criteria pertaining to retention of runoff. If you have any questions regarding this report, please call. Sincerely, •"' • • Gzzjta.0 a. Richard A. Rutherford, P.E. & L.S. t 5028 bah ' James H. Stewart and Associates, Inc. 4' ?'••••••', 103 S. Meldrum Street "qe o7j ` ,ti 01'0 P.O. Box 429 ' Ft. Collins, CO 80522 970/482-9331 Fax 970/482-9382 VICINITY MAP SCALE - 1 —1000, l , ` p J Monro Avenue c' '4 West Hometooth Roi4(' Arboi Avenue SITE c �1 \ CIO l\ lb m \ O o Denniso Avon ' • _ c � v'ci Q� o , o Boardwai Drive A m Loper o� Elementary Butte Pass Drive QJVP Troutman Porkwoy H ,' STEWART96SSOCIATES 103 S. 93 DRUM, FOR1 FAX T COLLINS, CO 80521 Consulting Engineers and Surveyors 82 By: R at} - 4- Date: lz Client: D /L . S A v F P Sheet No. - V — of _ Project:EA,2/c .f-OUTN COMMEP,C/A•L /F/-A7-A AAiAjo,e J,/BDuylr/on,. _F;coati Subject: Cn-(22M U)&-rFe Pvn,oGG - Lnrc -A, 3-B�3-C. 3-b I ' _PED i ( y j I I , +—C Cl,__0.0. x_'-6 �_S._9� O.•Z 4:_X' 0' 3/1� i I �Cuvc,P4u ltl GRgsrCN4uNE i t ZSO FT _ 9�9NtU•.{ 3.Ok/a , � t I i I Q-.z 0,.-T5_x z: i x_:. 4.4% 7•S¢ �•FS... 4 ` I�y�13,z .� I ` r- I : Tc �r g Mlu------- o.� ZS_,x; 0_�_%S X__ %• �7 = 3 0• l7 I I _ _ I ' i _ I I I I I I ---jt STEWART&ASSOGATES 103 PH. S. 938 RUM,FAX FORT gOLLINS, CO 80521 Consulting Engineers and Surveyors By: 2. 4 . ,e, Date: IZZIqlq7 Client: L o ,e GW D i t- s q v c e Sheet No. 4- of — Project: F4Pk' SoUYH COmme-- pr'/At— Pl.A7A MImieCila Iy/r/oeJ-fEC�aoF/LiU� Subject: S To ,e /h IA) Ja TE e 2 v nJ o F F �—�—i— rS.NtaP—E%L✓-.L0US-i-A�_EA__ .-d_., 77 4c 74•'Z./o. D o 'ass) O 7 9 I I i � O VGRETE PRAJ sir Co le AVAA CHgvaEL s8 �x 4 x :l•l-8 .= Z9 . G. F•f . 1 r.. 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MELDRUM, FORT COLLINS, CO 80521 PH. 482-9331 FAX 482-9382 D./q;z, _ Subject: K cTr--- Ai -7-1 O A) U D L U M C A ex, U[_ A Ti a N_f I I i Tom. i , I I•__ �--i—r I ; __.y_�. _ _._.. _ e _. _.__ _-_. - �-.4.1.,__f3.R.E_A_ Tf/ 1._T G:Al,t/�_.�_,eA.inJ _7.:0 �.ETC.V_iip•J Po.vp r-i I I I , V-!_.A'.A 1J- H.A r7'.4 N ,A vC . .� _� Z.Z AG e EJ �w_N 0,Ce-_ V OLU M E I I I I CcC / A_._X i/Q,BOD �.I..zsx.jo_,75 x b-05x 2Z'X 0.,SOo = GG,iz� � 3 I � _- ETEAJTIO-AJ, VOLUME j�E'QOL2E0 = Colo,lz(oX Z = /3Z,ZS - F-3 ti H/J7.02rG FORT_/0N-_.(C=0.Z0) .OF ff/, T5 is 146,eEADy _._ P2ovtpE-rD._F-OP-1,U--THE EYUJ -rJAJG FoNr VOLUM.6 A=P 41 F 1_ e I T_O T:A L V/ OL U M E ' )26Q l> /,2 E D ,C 0 2 �/45 al FO N C ' I � 0, 7,5 0- Z0) (/ OS-CG Z L) - (M.'s 00�(z) = 9 (o, CIS (o P:r: I I j..— -- RE:QUl2ED ._VOLU',4 67 OR.- C.AZMIkE Ty54re6 /�B,SoUFr3 -_TO 77AL .:PO-N_R VO L-UM 6 R_C C? U/R.6D = /4-8, 800 FTC J- 9G� STEWART&ASSOCIATES 103 PH. S. ME9331 LDRUM, FORT COLLINS, CO 80521 482-FAX 482-9382 Consulting Engineers and Surveyors By: PIK — Date: Client: Loren Di is c? v e r- Sheet No. Hof_ Project: Pa ref S a t/ U Y s; r? e-ri fie A >-e r Subject: 6 I -of-rr *i P,> e i L,% at ef- ria e tA/ 0, 7 S�c &31i e- r7 015; 23 C/ 0' 3-- 75 77 - --- --- 6f-; 3 -4� e.re 1 e Llf 0 0.8 Vz Je-vs ;or J/7/c� &'d aAlek- 3 7-o c- ct r�� VA- 37 /17 7 0 0 3 Z- - ------Q.SX4+ IL + 1p 4- e 4 jh rqv� 4-cl. crf Ci ex- S(I.r- C e S.EL n cA 'A^el Jo'l �7 U, e4 T- ' STEWART&ASSOCIATES 103 S. ME9331 LDR FAX FORT COLLINS, CO 80521 Consulting Engineers and Surveyors 5 ' By: _J2. . 2. Date: �S g�y� Client: L o e e v 1� i�sa v E 2 Sheet No. 7 of ' Project: P',4gIc .hnvz�j C n m m ,ec/Ae- Pc-87,4 M�Nn�e ��B., SEcov� FiGiN/_ Subject: S-w A(, E CA PA c i TY I 1 ' •C 4 5 - L. 13 -0 S S' 1 9.7 4- 9'�¢ Z 3 x a,004�'� Q3•Z,L) r — 4"L•57 X .9.751- X 6.81 X 0,063Z = Z/•ZZ GF..S r , , I i 1 •a r 1 , ' , 1_ i i T 1 T r ♦- i f.._ t- . I I � I , I 1 1 r i EASEMENT DEDICATION KNOW ALL MEN BY THESE PRESENTS: That the undersigned being the owner of Lots 3-C and 3-D, PARK SOUTH COMMERCIAL PLAZA MINOR SUBDMSION, SECOND FILING, City of Fort Collins, County of Larimer, State of Colorado do hereby dedicate and convey to and for public use, forever, a storm water detention easement as described below, provided however that acceptance by the City of Fort Collins of this dedication of easement does not impose upon the City a duty to maintain the easement so dedicated. The East 70.00 feet of Lots 3-C and 3-D, Park South Commercial Plaza Minor Subdivision, Second Filing, City of Fort Collins, County of Larimer, State of Colorado. Witness my hand and seal this day of A.D. 1998. PARK SOUTH LTD., A Colorado Limited Partnership Loren J. Dils er, General Partner STATE OF COLORADO) )ss COUNTY OF LARIMRR) The foregoing instrument was acknowledged before me this .A!l day ofA.D. 19981 by Loren J. Dilsaver as General Partner of Park South LTD, A Colorado Limited Partnership. Witness myhand and official seal. e'aOTARY ' Notary Mic a My commission expires:.? —of - PUBLIC 9 OF ATTORNEY'S CERTIFICATE This I hereby certify that the within easement has been duly executed as required pursuant to §2.2.3(C)(3xa) through-(e) inclusive of the Land Use Code of the City of Fort Collins and that all persons signing this easement on behalf of a corporation or other entity are duly authorized signatories under the laws of the State of Colorado. This Certification is based upon an examination of the records of the Clerk and Recorder of Larimer County, Colorado as of the day of , 199_ and other information discovered by me through reasonable inquiry and is limited as authorized by §2.2.3(C)(3)(f) of the Land Use Code. Signature: Address: Registration No. AVTO L0"c Sa b 'I I LOT L-8 II 5 l0 DRLfn [yyr •iG,p \ E��neuT Pllae To gem.g,Y Mr..ea -4. 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