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HomeMy WebLinkAboutSite Certifications - 10/31/1994 (2)jrit l �p roNled R r l� y Date RALL DRAINAGE CERTIFICATION THE OVERLOOK AT WOODRIDGE THIRD FILING, FIRST PHASE FORT COLLINS, COLORADO pg0 my OF rvlm"a OVERALL DRAINAGE CERTIFICATION FOR THE OVERLOOK AT WOODRIDGE THIRD FILING, FIRST PHASE FORT COLLINS, COLORADO October 24, 1994 Prepared for: Client: Woodcraft Homes 3665 JFK Parkway Building #1, Suite 300 Fort Collins, Colorado 80525 Prepared by: RBD, Inc. Engineering Consultants 209 S. Meldrum Fort Collins, Colorado 80521 (303) 482-5922 RBD Job No. 434-008 Engineering Consultants rurn Fort (@0Wb traii AP5 !994 303/482-5922 FAX:303/482-6368 Mr. Glen Schlueter City of Fort Collins Utility Services, Stormwater 235 Matthews Fort Collins, Colorado 80522 RE: Overall Drainage Certification for the Overlook at Woodridge, Third Filing Dear Glen: We are submitting to you, for your review and approval, this summarized report of all the previous drainage certifications for the Overlook at Woodridge, Third filing, First Phase. Presented in this report are the items you requested during our informal meeting on October 3, 1994. This subdivision contains four separate swales, one of which will be certified at the time of the second phase construction. We appreciate your time and consideration in reviewing this certification set. Please call if you have any questions. Respectfully, D Inc. Engineering Consultants P'L Perry EnCaof Project Engineer z Roger Curtiss, P.E. Project Manager a 27362 Denver303/458-5526 TABLE OF.CONTENTS DESCRIPTION I.. GENERAL LOCATION A. LOCATION II. SCHEDULE OF HAPPENINGS A. REVISION OF PLANS B. CERTIFICATION OF REGIONAL CHANNEL C. CERTIFICATION OF REAR LOT SWALES 224 ill l LETTER FROM M. SMILIE REGARDING GRADING OF LOTS 20,21,22 CHANNEL CROSS SECTIONS PHOTOGRAPHS FLOWLINE ELEVATIONS GUIDE TO FLOWLINE ELEVATION POINTS ' OVERALL DRAINAGE CERTIFICATION FOR THE OVERLOOK AT WOODRIDGE THIRD FILING FORT COLLINS, COLORADO I. GENERAL LOCATION A. Location The Overlook at Woodridge Third Filing P.U.D. is bounded by Taft Hill Road (County Road 19) on the west, open space (future filings) and ' Imperial Estates on the north, Harmony Road, Webber Junior High School and Regency Park P.U.D. to the east and by the Overlook Second Filing and Harmony Road on the south. The site location can also be described as being situated in the Southwest 1 /4 of Section 34, Township 7 North, Range 69 West of the ' 6th P.M., City of Fort Collins, County of Larimer, State of Colorado, containing approximately 25.7 acres, more or less. A site location plan is included in the appendix of this report. II. SCHEDULE OF HAPPENINGS ' A. Revision of Plans ' On June 6, 1994, a RBD sent to the Stormwater Utility a revised grading plan with. verified spot elevations. The reason for the revision was that the client had wanted to raise the elevations of most of the property by ' approximately 1.0 feet. As it exists now, the Overlook at Woodridge, Third Filing has been built according to this revised grading plan. Therefore, any elevations verified by city personnel should be compared to this same revised grading plan. Aside from the swale behind lots 3, 4, and 5 (for lack of a better name), all elevations picked up by RBD are ' being compared in this report to the revised grading plan. The swale behind Lots 3, 4, and 5 had to be changed due to drainage concerns from residents of the Overlook at Woodridge, Second Filing. B. Certification of Regional Channel Existing behind Lots 48 through 63 on the north side of the property, shown on plans as Section A -A is a regional channel. On June 6, 1994, RBD sent a letter to the Stormwater Utility verifying the flowline elevations. of this channel. This channel has been considered certified as built since the submittal of that letter. C. Certification of Rear Lot Swales Between the time of certification of the regional channel, and the present date, a series of surveys and re -surveys ensued in order to achieve certification of three rear lot swales located on the Overlook at Woodridge, Third Filing, First Phase. As the grading exists currently, all three of these swales have been graded according to their revised design. Hereafter the swales will be referred to as such: Swale 1: Behind Lots 3, 4, 5 Swale 2: Behind Lots 6 through 17 Swale 3: Behind Lots 70 through 74 Swale 4: Behind Lots 28 through 34 Swale 1 was constructed according to an agreed upon change to the revised plans, which was submitted to Stormwater Utility on September 15, 1994, following some concerns of residents of the Second Filing. The flowline elevations and cross -sections of this swale have been recorded from the field and are included in this report. Swale 1 has been constructed more or less according to the aforementioned revision. This channel has now been completed The final desgin cannot be certified as built until the proposed 2' sidewalk culvert on Meadowview Court is installed, but a picture was included with this report to show that it is being built at this time, and escrow money is being held by the city to insure it's construction. An easement was dedicated in order to accommodate the width of'this channel. Swale 2 was constructed according to the revised grading plan submitted to Stormwater Utility on June 6, 1994. Flowline elevations and cross - sections were recorded from the field and are also included in this report. On September 16, 1994, Mr. Mike Smilie sent a letter to the Stormwater Utility addressing some concerns regarding the rear lot grading of lots 20, 21, and 22 of the third filing. Since that time, the changes mentioned in that letter have been corrected and the grading is as the plans specify. Also involved in the grading of Swale 2 is the small drainage easement behind Lots 18 and 19. This swale has now been fully completed and its grades are included in this report points KKK through PPP. Swale 3 was constructed, more or less according to the revised grading plan. Elevations, cross sections and pictures were recorded from the field and are included in this report. ' Swale 4 will be constructed and certified, weather permitting within 60 days of the present date, that is, December 5, 1994, with Phase 2 of the third filing. It will be built, according to the elevations shown on the revised grading plan. The contractor has hereby agreed to this schedule. In the meantime, building permits will be held on Lots 35 through 40 until the construction of this swale. Regarding Lots 28 through 34, which share swale 4 as well, certiricates of occupancy will be held on all these homes, except for Lots 30 and 34, until Swale 4 has been certified. �_ r SEP-19-94 MON. 7:49 WoodCrafi Homes FAX NO. 3032253987 P.02 14ICHAEL S. SMR,IE ' VICE-PRESIDENT FOR CONSTRUCTION WOODCRAFT HOMES 3665 JFK PARKWAY BUILDING 1, SUITE 300 FORT COLL INTO CO. 90525 September 16, 1994 Mr. BASIL HAMPDEN SI'ORMWATER ENGINEER CITY OF FORT COLLINS 235 NIATF.EWS STREET FORT COLLINS, CO 80524 ' Dcar BASII, PER OUR. PHONE CONVERSATION EARLIER TODAY I AM FOLLOWING UP WITH THE NAMES AND ADDRESSES OF THE LOTS INVOLVED WITH MAKING UNAUTHORIZED CHANGES TO FINAL GRADING ON SEPTEMER 16, 1994. ALL OF THE INVOLVED LOTS ARE ON MEADOWVIEW COURT, IN THE OVERLOOK 3RD AT WOODRIDGE. THE ADRESSES ARE ' 1906, 1912, AND 191& MEADOWVIEW CT. THE LOTS IN THE SAME ORDERARE LOTS 20,21, AND 22- WHILE THE CHANGES ARE NOT SIGNIEiCANT, AND COULD BE CLARYM) BY THE BUYERS AS NOT AFFECTING THE GRADE AT ALL, ALTHOUGH THE MERTS BET -WEEK THE HOUSES HAVE BEEN TOTALLY ELAJINATED AND SOME ALTERATIONS CATIONS WERE MADE IN THE MAIN DRAINAGE EASEMENT AT THE REAR OF LOTS 20 AND 21. LOT 20 IS OWNED BY DENNIS AND PEGGY SHARP, LOT 21 BY STEPHEN AND KERI ' COTTRELL, AND LOT 22 LS OPYI�'ID BY RIC3ARD AND KAREN CROSS. WE WILL BE FOLLOWING UP WITH LETTERS TO THE Ae'TECTED OWNERS AS WELL. I APPRECIATE YOUR CONSIDERATION IN THIS MATTER AS IT IS INDICATIVE OF WHAT COULD EASILY GO ON AND NOT BE NOTICED IF IT HAPPENS OVER A WEEKEND OR JUST PRIOR TO A RAIN ' OR SNOWSTORM; Sincerely, MICHAEL S. SMII Tx VICE-PRESIDENTFOR CONSTRUCTION RED INC. ENGIA cRING CONSMUSTS i CHANNEL RATING INFORP.ATIOV ' or Lots 0: ' .. .STA. .ELEY... 0.00:. ' 20.00 MOD 15.00 ' _ '• Q too + 3,3 `It, VALUE SLOPE (ft/ft) • .191 0.035 t 0.0060 ELEVATION AREA ' VELOCITY DISCF.AIGE FRO•JOE (feet) -------•- (sq ft) (fps) ....... ........ (cfs) ........ N0. ...... i5.50 1.0 1.3 1.28 • 0.45 16.00 4.0 2.0 8.15 0.51 16.50 4 9.0 2.7 24.01 0.54 ' MOD 16.0 3.2 51.71 0.57 17.50 25.0 _ _ 3.7_ 93.74 0.59. MOD 36.0 4.2 152.41 0.61 ' 18.50 49.0 4.7 229.E7 0.62 19.00 64.0 5.1 328.17 0.64 19.50 E1.0 5.5 449.23 0.65 20.00 1100.0 5.9 594.51 0.66 t 33 % @ 0.5, I lo•.S ` - 2-t J = 2.56 K 9Z d is �ESIEaN=p rc2 Q,, + 33 i • � t s i T t. I 7 �-.-1 i.r I 1 ;�` 11 i i I � 1 I i I i i I I i 11 1 t i i +izSVJp., ; uzoSS� • i-_i~! ! lam_ 1 __�T I I` ��+ _— 1 i-•1— �,,---r—I I I 1 1! I i l l l l i t 1 1 1 1� i ; I l l i i_�• 1 � f i I! :� ! 1 I I I i I� 1 f !; i i 1! 1 I :! fl t 11 I - —1—'-4 - i 1 W�GG _ _ _QZJ .... - - �141S S�p.l.$SLVPt.E -_+ .... - - T } — I t - - I I 1 I _ i . I t— i- . i • .l. . • r , ' i . i f" i . i i 1 1 1 a I • I 1 IA — — i . ... . ........ . . , . �ti"Ml R:wl S. .1 f �I r SWALE 2 SWALE 3 'Pro`fI The Ovelook at Woodridge, Third Filing Job. No.: 434-008 File: 100494.WB1 - ' Surveyed Elevation Shots - Flowline Station Elevation Swale 1 A 59.38 58.06 'BB CC 58.79 DD 59.06 EE FF 57.13 56.20 GG 55.93 HH 55.46 54.75 'II JJ 54.27 KK 53.31 ' MM 50.24 Swale 2 NN 56.16 00 56.70 PP 57.35 QQ 56.09 54.65 'RR SS 52.91 uu 51.50 'W XX 50.30 49.39 YY 48.26 ZZ 47.76 2BB 46.39 2CC 45.77 2DD 43.92 47.39 'KKK LLL 47.81 MMM 47.20 45.80 'NNN 000 51.13 PPP 49.81 ■ Swale 3 2E 57.00 2EE 56.80 2F 59.29 2G 61.45 2H 62.00 '21 62.78 2J 63.50 2K 62.86 2L 61.56 Completed by: P. Cabot Date: 10-24-94 ect: 'ProFf' Overlook @ Woodridge 3rd Completed by: P. Cabot Job No.: 434-008 DATE: 10-24-94 File: OVLOOK2.WB1 Swale Slopes from point to point Station High Station Low Distance Slope Swale 1 A 59.38 BB 58.06 21.94 6.0% CC 58.79 BB 58.06 41.56 1.8% DD 59.06 CC 58.79 11.28 2.4% DD 59.06 EE 57.13 70.37 2.7% 'EE FF 57.13 FF 56.20 GG 56.20 55.93 49.73 14.84 1.9% 1.8% GG 55.93 HH 55.46 26.77 1.8% HH 55.46 II 54.75 38.65 1.8% '11 54.75 JJ 54.27 26.45 1.8%. JJ 54.27 KK 53.31 43.18 2.2% KK 53.31 MM 50.24 151.74 2.0% ' WEIGHTED AVERAGE SLOPE 496.51 2.2% Swale 2 00 56.70 NN 56.16 23.00 2.3% PP 57.35 00 56.16 31.00 3.8% PP 57.35 QQ 56.09 40.00 3.1 % QQ 56.09 RR 54.65 60.00 2.4% RR 54.65 SS 52.91 63.00 2.8% SS 52.91 UU 51.50 45.00 3.1% 51.50 VV 50.30 45.00 2.7% 'UU VV 50.30 XX 49.39 45.00 2.0% XX 49.39 YY 48.26 60.00 1.9% YY 48.26 ZZ 47.76 30.00 1.7% ZZ 47.76 2BB 46.39 70.00 -. 2.0% 213B 46.39 2CC 45.77 35.00 1.8% 2CC 45.77 2DD 43.92 70.00 2.6% 47.39 2BB 46.39 50.00 2.0% 'KKK LLL 47.81 KKK 47.39 15.00 2.8% LLL 47.81 MMM 47.20 29.00 2.1% 47.20 NNN 45.80 67.00 2.1% 'MMM 000 51.13 NNN 45.80 20.00 26.7% 000 51.13 PPP 49.81 55.00 2.4% WEIGHTED AVERAGE SLOPE 853.00 3.0% ' Third Sheet 2F 59.29 2EE 56.80 70.0G 3.6% 61.45 2F 59.29 65.00 3.3% '2G 2H 62.00 2G 61.45 30.00 1.8% 21 62.78 2H 62.00 35.00 2.2% 2J 63.50 21 62.78 30.00 2.4% 2J 63.50 2K 62.86 30.00 2.1 % 2K 62.86 2L 61.56 55.00 2.4% WEIGHTED AVERAGE SLOPE 315.00 2.7% IAA 1 1111 -\ op I V T.F.=5 7 7 k9. l 7 .7 ,1 1 / 7. 4�);'V. t So r ol AT WOODRIDGE `\\\ .THE'OVERL001�\ SECOND\ FILING �;, 1 — N. 1 I . // N _-_-/ u �- rr _---�. u I If is I v, oc- It T It r 60 ' 1 i 1 1. � `•\. ��? / � Y R � ,1 ` 1 1"ia7�\B V 1 L. 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LIN t t, teiV ,T rMotOM BY M OxSr IV AWAY V, f9(N yt d - n `1 } } 1 ..._y;� 5i•: 1 7.:' - ,�, ' •y t f. a nE wulM w.En rDR rcusBn DRADE to I �. ,__ 1 q 1 I f{y \ +J u2o Ea+cs fmvr,m OF ro-w.{nw wru ice✓^"""+., 1 C N I W T v.. , f�. 7 WIAu x VA. i IZ + jl�V : 1 1.. •O ma a IIv,r1 1 , 1 �'1, 4. ME nwzm GRACE An ME LOWER Exo 1p T, .r y 1 r r7 �./ ♦ 1 q { 0' wsfs w STOP siw m MAY BE p ,.f• ,- - WCVP{o r0 luxnx rM uaE WNI rx 1 ti/ , ( PRmmr,s swufs As fnc n v' N1uw / k;�- - }....� 1 COVER sM.mrwaD II2I. \` 1 yr 11 sE U N OLM I"SIAnw TWOSOME: I9TE I L IN x9im y \ I 1 rAx.W 0' ACE SBE . "''t 1 { R, 1 • 0 roW{w F31 CIR C AT SXNI. BE SRm G1\ \ 1 ,; A(an ! vI `\ • OJ _ ME wr¢w.r TILL x of mcn wI mE 11` �q .. 4 - - a�=1 a L.a s ILM&A M siux.uY.ucswo{o rev 1 \ \ ' 1 `.JOA 1 aM.. cl.Nsvo OTIVIONSE. ov. Ill To N e cOT$MA�H xAu° a axs I ci{n � SUM SLOPE - %.N miAlov {trim DATA W<v r+c r A LEGEND /." 00 A. Aid m.i. 1 Jr ✓. uu M. Y6N YRx1 LAOS SJOI BF t A.'+r 9 : - Nirytm Nm A MN sqC 6 2E TO 404e CpsnxO CONTWR ' jj7 N Y BEGTION A- A w E sAY afeM MAXI. . it I '1 �< I x , i, y .l IO A Ei MT NAIamNY IIQb 10 Mf MA WA EpI E YIA¢ 130 PROPOSED FAMISHED CTMTWR \Ik W1N AT IME S PARAR.SIE(W BYBO.W. BALE OF WALK T C � .r Y • WE WY Is NBYA 1 FOB W w CASE AT R [ M IOIIfRIxIE GRACE pYl. "I HIM PONT ,I , BI .19 u. fww LOT SN.WL 0[ EVAIWIm By A IEpSTABLE LP. LOW PONT '1 a e Sals UMxfm Al M nF V CpBIMIC i '` II A` M p ¢n um M rM B AM R rM ••_-O/VI I ', AM J.S Vr Sml.w SASM1AI RGBRFO .,.. i9B SPOT ELEVAOON 1 �. t \ \ILL ,L`• 1 ' _ _ e_ �. L.�. wLM� x m a nOvE w�rAxaswru avMilAOPilm 2tuw wREcnDN e n AT . �• \L VA`t . - _ _ _ Y ,.. - w �wi M- VITDI sox SE If wmC.EET ,1, 1 PROPU9fD STORM DRAIN ^r .;t ,%r N.. v u. dJWIMM IEIDRAND nM� EYAI ANE ROAD d� A n a INA MADW NS4 AMp ' :• SEE DRAINAGE, EROSION CONTROL AND SECTION 9 - e - Alm aAaM sEaAa slmw mw :. - N •-_ 4 OFFSITE GRADING PLAN, SHEET 4, ALONG MnmM la:aaxr-L auwYl gcTlx OPE^^ ONE AND AN A um ROUSE. 1F. 'rro of EONUETE FOUNDATION wAu a 1.CY,VLO' \ • MOVRE O NA E WA E OF 21TINC. My MN a MAY WITH STORM DRAIN PLAN & PROFILE, FULL. rcanmm mlanwls SETBACK OR esDMO BE ENMCa1D4r M .�.' .. SHEET 18, FOR DETAILED DRAINAGE DESIGN. M ' \ _ s{clw{ 49 a xAwwr Bow 'ENS m aAME: 'MPO BY RBD. INC. FIELD SURVEY I _ [IrAI 9flr A rW ulYAh MANQ NEWBE M Nx91m QADF A1D RNWIm DCH N--Ali CAT tl� 7;CITE Enginee mj Consultants - THE OVERLOOK AT WOODRIDGE, P.U.D. FHA GRADING PLAN Eba DECjTi(ILK 1 92 A T°° M a v Sine Mer. D X s}2 a I.:.nR,. y A ,1 1 An - '21 8 n s rM{ CA N„ SCSI MIA, E Will ,,. ,,,, aV AA THIRD FILING rwnBrr xn , N4 i AN_ Rr A"Ae r MIT 2 4 M {Av Ali / 4S<ltl !