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HomeMy WebLinkAboutLot Certifications - 05/02/2012Cityof Utilities electric• stormwater. wastewater. water Fort Collins Weed PO Box 580 For Fort Collins, CO 80522 , 970.221.6700 970.221.6619 fax • 970.224.6003 TDD utiliffes@kgovcom . fcgov.com/utifities CERTIFICATION OF LOT GRADING Pursuant to City Code § 26-544 and City Land Use Code § 3.2.2 (e) Date: Z lla!M ?AjZ Permit Application No. _B1102250 Address: _4501 South Lemay Avenue /5 I Lot: Block: zVX Subdivision:1-17 afAaa zugeruvl '$S6 1,(Print)_John E/Eklund a Colorado registered professional engineer, verify that the above referenced property in the City of Fort Collins, Colorado, has been inspected by me or an appropriately qualified professional under my direct supervision, and verify that construction of all stormwater facilities and grading is complete, and that the elevations and drainage pattems shown on the attached drawing(s) which were developed from a survey performed on (Date):-2 May 2012 , accurately and truly depict the elevations and drainage pattems as they existed on the date of the survey. Based on this information, I certify that (check one): ❑ The elevations and drainage pattems of the IoUsite are in substantial conformance with the City approved drainage and grading plan for the property (information attached). SEE NOTE. ❑ The elevations and drainage pattems of the IoUsite as measured are in general conformance with the City approved drainage plan with exceptions (information attached). In my professional judgment the elevations and grading of the lot/site as constructed are functionally adequate and equivalent to the specifically iffect stormwater drainage on and off the lot/site in a manner consistent SEE NOTE. By: (signature, PE stamp) 36rte5 JJFk- F"- ' t=+, toszs (address of sigrNng party) NOTE: A tf pLE' Li6lAtst be submitted at least two weeks prior to a request for a Certificate of Occupancy for the IoUsite, lociuding�l�� ited to drawings of the IoUsite showing the approved design and as -built surveyed elevations of all structures, drainage and grading features (e.g. swales, retaining walls, lot comers), written infornation/explanation of discrepancies, and other Information necessary to confirm the above certification to: Fort Collins Utilities 700 Wood Street Fort Collins, CO 80521 (970) 221-6700 Rev. 1127112 At least Two Weeks Prior To Requesting A CerNticatlon Of Occupancy For The Property adVt fiar� �quco&, DRAINAGE CERTIFICATION FORM Please fill out all applicable items in this certification form for single family, multi -family and commercial properties. Write "OK" for items checked or actual number checked in field. Use "N/An for items that are not applicable to the property that is being certified. A. Drainage facilities certification 1. Pond Certification 3 -volume verification - 7,5(91 .0 j�f a.topographic records and volume b.cross-sections and spot elevations -positive fall to pan -off -side slopes- oL -invert elevation-�9tS6-6 -spillway elevation -4k 1ld'5-1 -placement and size of riprap-01-N -side slopes -.ti _grading _,Y_ -orifice plate installation and size_- Zi'iftixo'w -compaction of berm -ok- -structural integrity of pond Swales -location (are they within easement) e-F 0v4- b�A\l.Aiw� -dimensions and cross-section verification - -longitudinal slopes and side slopes -spot elevations -Set- -permanent erosion control measures (drop structures, riprap, etc....) - N/% -tie-in to pipes, pans, curbs, etc.... W/A -weir size (elevations, size, opening, etc.) &)/A -available freeboard -,k -landscaping infringement on swales u/A 3. Pipes _N _ ���N�}� +-,) e_-f,SktI -size and type -slopes (as -built and comparison to minimum 0.4% slope) -pipe capacity calculations if slopes are significantly altered -invert elevations -installation and backfill material -cover -encasement and clearance from other utility lines close by -joints 4. Concrete Pan Channels - 0/4 -size -slope -super elevation -cross .section -thickness -elevations 5. Inlets _Sw P�9�'S 'vv- -size and type -size of opening (or name of standard used) -grate elevation -invert elevation -box size 6. Cross pans -NIA -size -type -grade -elevation -cross-sectional depth -tie-in to curb and gutter 7. Culverts -size -type -invert elevation -headwalls 8. Underdrains _N(A size -type -cover -backfill -geotextiles -cleanouts - 9. Curb cuts - Kew N bs �•�w l 4 �' -size -tie in to swale, pipe, etc...- tiJ/A B. Certification of Grade Elevations Adjacent to Drainage Facilities: -minimum opening elevations - o�, -top of foundation elevations -, °111-0 -comparison to 100 year WSEL's (Freeboard u?6 requirements and floodplain issues) C. Certification of Erosion Control Measures: 1. Permanent Measures: -Permanent vegetation (6" bare spots and weeds under control) oI- -riprap - 0/A -riprap bedding -N/A, -drop sections -N/A -sediment basins/water quality ponds•-O�- -netting mats/blankets•M/A. -mulching _ oil& 2. Temporary Measures: -mulching _MIA -inlet filter installation--W7. -check bale dams .NIA -seeding and temporary vegetation -5e'404 -silt fence -+ilk D. Site Cleanup After Construction -construction clean up--�k -smoothing of ruts - aL -reseeding -c) L E. Statement of Compliance This certification is signed and stamped and by signing this form the engineer(s) attests that they have inspected 0 the site and to the best of their knowledge the as -built conditions of the drainage facilities are as described in the above form and in the redlined plans enclosed. Failure to properly disclose all known information could result in the rejection of this certification and prevent the release of any Stormwater Utility holds on Building Permits and/or Certificates of Occupancy. F. Signature and Stamp by a Colorado Registered Professional Engineer. Spirit of Joy Lutheren Church As -Built Pond Volume Calculation By: JAE Company: Ayres Associates Project Number: 32-1636 Date: 02-May-12 Stage Storage Volume (pond volume calculated using the prismoidal formula*): V _ (Al + A2 + A,AZ Depth 3 CONTOUR (FT) AREA (FT2) VOLUME (FTC) DEPTH (FT) CUMULATIVE VOLUME ACRE -FT 4986.6 0 0.000 0.00 0.0 4987 69.0 9.200 0.40 9.2 4988 2071.0 839.340 1.40 848.5 4988.6 3741.0 1719.091 2.00 2567.6 `Urban Storrs Drainate Criteria Manual, 2001 Page 1 of 1 r morn i r, RM rtl Illy tl Np'0 YNM •mle cros. srer owYe i ` A 8 � owna D a of I w vx[r w a: vrnr rrt 1,e'n' A.AL AM1I aY sur,ss A B D /rt pnr oc PLAN ,/f Mn. WC AN ra t rLL'fY OFa yK AO2 ]I ' wx u NS rl�rtxysweNu 4 Y �: rorr tl +rp r!n yl ^AS EXISTING \ SIDEWALK EXISTING 27'0 RCP 4984_80 INV OUT 4986.2 INV OUT i EXISTING CONIC PAN I SECTION C-C -T. WELL ..i ROM COlIMR RAZE SECTION A -A SECTION B-B LEGEND •' ILI.. rm rn"61e ,`M n ,a�RevwabNe uY cw„o ' � ' NY Ia1M Y vY..Y i� •'Y SECTION O•D I 9ru r ps. m¢. „n Ymrs s w .0t 6Y r ,MO M Mw4 aN.1,mT I r K Y,U r Y.�•Y4 rIY IFpY :� , nYY• Yan s.,. [ oMm:sc 1Kcm m, rsr - YrrY�-.• "m. relf 4954.87 INV IN EXISTING / DETENTION % IC POND .- r—EXISTING 12"0 ADS Cc y i �•G CG i WA L S UCTURE - S DETAIL INV OUT C •, h cZi RD f-1 RD 30 TEMP BM J !4 REBAR W/ ALUM. CAP ELEV.- 4987.74 �°` yc — APPROX LOCATION OF EXISTING PIPE 7N F WATER QUALITY POND SCALE 1 = 20' 2q snxY •vas scum wm : srYAcs 'a• r*i Yaea �m 1 A r ro'�"rr Yam" A sop" A -•A 06b 1o PLAN Will euY wr•ram rem: �'�` PNa{:Lt YILW GENT NOTES -a�Yara�-roars �c }c('��� s1DIKIre:LH � w- .-y�N1+ Z-.L.eY OOxs ?O" ORMcs °,!.. , wean• LF•T7 / A B L � \�Yi.Fw W,n,fmlwr Pow MN i -A MOM A 7. =�• 4 Tnli '.' kill SDBMX CULYM FOR VERF. CM ! a1 W NO Will "' m� soerY.rta-.vYrmro- J a-uL 4988.7`+ EXISTING WATER EXISTING TOW N 7 SIDEWALK QUALITY 4986.2 GRADE—� `\ 41 POND INV OUTS,` / INV IN wvrlri em we ' NV IN EXISTING i PIPE WATER QUALITY OUTLET --> UNDISTURBED -EXISTING (SEE DETAIL THIS SHEET) SOIL CONIC PAN CENTER OUTLET BOX ON EXISTING PIPE OUTLET PIPE DETAIL SCALE 11 = 5' e6mi IN as I- PH RUN fT O i TFFWICE �� 'R.YY CoxsiRGCtwx xu\s ^° OF]ML D-7D � Q V- PIOrm-�L1p1 VRN C�� �_ENERA'�NOTES : 1.�!R��. MraQ�nwl�rv�.pa¢yrfYtT A �� '' MIN ME DIRE COMM. 66MU 71LM 0M C0l MEW sroarKlEa cC15mrYK.o LCiwx oErMLs �.r. p1 � D-2 D-2e City of Fort Collins, Colorado UTILITY PLAN APPROVAL APPROVED: rra Pew _ CHECKED BY: � • rrW wti E.r CHECKED BY: sr..er I.E► OW CHECKED BY' CHECKED BY: CHECKED BY: o.r ©ML4" Ii ODATM M11 LEGEND: PROPERTY LINE EASEMENT _----------------_ EXISTING FENCE F EXISTING CONTOUR LINES PROPOSED CONTOUR LINES EXISTING BUILDING PROPOSED ADDITION EXISTING SIDEWALKS PROPOSED SIDWALKS ROOF DRAIN 0 DRAINAGE LEGEND —� SURI`A E FLDW NRECTN)N (CONCENTRATED FLM) DRNN,WE FL11N DWECTKM (PWE FLAY Q SLOPE) SURFACE FLOW DIRECTION (SMET FLON) A A=SUB-HASRI DEYGWTpN R=ARG IN ACRES B C C-COMPOSnE RU W COEFFX] NTS QD-DESON POYYT DESIGNATN)N LEYAY AbENUE FOUNDATION NOTE The top of foundation elevations shown are the minimum elevations required protection from the 100—year storm. Minimum finished floor elevations above the 100—year water surface in streets. channels, ditches, swales, or other drainage facilities, as illistrated by the master grading plan ore to be shown. 0rKIr`LJL I A 0I/. CITY OF FORT COLONS BENCHMARK B.M. NO. 7-94 ELEVATION = 4986.07 DESCRIPTION: NORTHEAST CORNER OF E. HARMONY ROAD AND S. LEMAY AVENUE, ON SOUTHEAST CORNER OF A CONCRETE AREA INLET. 30 0 30 60 90 GRAPHIC SCALE - FEET SCALE - 1'=30' EXISTING & DEVELOPED SITE DATA EXISTING AREAS ROOF AREA = 6115 SO FT = O.14 AC ASPHALT PARKING = 31.280 SO FT = 0.718 AC CONCRETE WALKS = 10.431 SO FT - 0.239 AC LANDSCAPE AREA = 137,5GO SO FT = 3,16 AC IMPROVED AREAS ROOF AREA ASPHALT PARKING CONCRETE WALKS LANDSCAPE AREA TOTAL = 185.326 SO FT = 4.25 AC = 12.306 SO FT = 0.226 AC = 35.624 SO FT = 0.818 AC = 11.972 SO FT = 0.275 AC = 125,424 SO FT = 2.879 AC TOTAL = 185,326 SO FT = 4.254 AC City of Fort Collins, Colorado UTILITY PLAN APPROVAL APPROVED: a. W^aa om. CHECKED BY: rmm a wsN.m.. uN>, om. CHECKED Br: Acrosl.r lXFtr Dal. CHECKED BY: Cpla a M.crpb. Ne CHECKED BY: r,m.K G.FnI« rim. CHECKED BY: v / ((6 t w w O og O _Q U ¢� m 0 P, Z F Q z� m Q aq N W Q ccCC w U Q < QD C) C� QJ SIAURFnusw TES