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Home My WebLink AboutLot Certifications - 07/22/2014City Of Utilities electric. stonnwater. wastewater. water 700 Wood St. FFPO 0rtCOI11 its Box 580 Fort Collins, CO 80522 970.221.6700 970.221.6619 fax . 970.224.6003 TDD utilities@fcgov.com . fcgov.com/utdities CERTIFICATION OF LOT GRADING Pursuant to City Code § 26-544 and City Land Use Code § 3.2.2 (a) Date: July 18, 2014 ZS'o0 s464rd.0. 0� y/2."A044 Permit Application No. 313-02855 Cc rd.-5.4 o.. 'ram Address: 5851 Dripping Rock Lane Bldg G2 Lot: 7 Block: 1 Subdivision: Fossil Lake PDP 4th Filing, 1st Replat (,(Print) Ryan 0. Banning , 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 patterns shown on the attached drawing(s) which were developed from a survey performed on (Date): July 16, 2014 , accurately and truly depict the elevations and drainage patterns as they existed on the date of the survey. Based on this information, I certify that (check one): ❑ The elevations and drainage patterns of the lot/site are in substantial conformance with the City approved __drainage and grading plan for the property (information attached). SEE NOTE. I( The elevations and drainage patterns of the lot/site 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 approved drainage plan, and will affect stormwater drainage on and off the lot/site in a manner consistent with the approved drainage plan. SEE NOTE. SEE NOTES ON ATTACHED AS -BUILT GRADING SKETCH AND SUPPLEMENTAL NOTIFICATION By: 301 N. Howes St., Suite 100 180521 (address of signing party) NOTE: A COMPLETE certification must be submitted at least two weeks prior to a request for a Certificate of Occupancy for the lotfsite, Including but not limited 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 informationlexplanation of discrepancies, and other Information necessary to confirm the above certification to: Fort Collins Utilities (970) 221.6700 700 Wood Street Fort Collins, CO 80521 At Least Two Weeks Prior To Requesting A Certificate Of Occupancy For The Property Rev. 2009 W INORTHERN ENGINEERING July 18, 2014 Dan Mogen, El Engineering Technician 281 N. College Ave. Fort Collins, CO 80537 RE: Grading Certification Exceptions Lot 7, Block 1 Fossil Lake PDP a Filing, V Replat 5851 Dripping Rock Lane, Building G2 Dear Mr. Mogen: We have inspected the property at 5851 Dripping Rock Lane. The grading of the lot is in general conformance with the requirements of the City approved drainage and grading plan. As constructed the risk of structure flooding has been minimized for the designed improvements. Below is a list of exceptions to the grading. 1. As -built condition and foundation elevations lack emergency overflow pathway. 2. 6" fall away from foundations is not provided in all locations around the building These exceptions are inordinately difficult to remediate because of the designed elevations and the as -constructed walls and pathways. As a result of these exceptions, there have been modifications to the drainage design providing surplus capacity and redundant drainage systems to minimize the risk of flooding. Surplus capacity and redundancy is provided in the following manners: 1. Select downspouts are directed outside of the building envelope or directly into the storm sewer. 2. Sidewalk culvert sizes have been increased to accommodate additional flow and relieve plug potential. 3. Areas collecting downspout runoff have been provided with redundant flow paths. 4. Areas collecting yard and patio runoff only have been provided with additional sidewalk culvert capacity. 5. A trickle pan has been installed around the west side to ensure the capacity remains despite landscaping. 6. Downspouts from this building and offsite buildings with the potential to emit runoff into the building envelope have been directed away from areas with less than normal fall away from the building. 301 N. Howes Street, Suite 100, Fort Collins, CO 80521 1 970.221.4158 1 www.northernengineering.com NORTHERN ENGINEERING The future homeowners association must recognize that maintenance of the landscaping and drainage systems is critical to ensure culvert, roof drain and inlet capacities are not impaired damaged systems or by debris that could potentially restrict the intended flow path and rate. Thank you and please let me know if you have any questions or concerns. Sincerely, NORTHERN ENGINEERING SERVICES, INC. r Ryan 0. Banning, P.E. Project Engineer 301 N. Howes Street, Suite 100, Fort Collins, CO 80521 I 970.221.4158 I www.northernengineering.com S:\4uv°y Job9%374.0011Dw o N 3744XI Canto NYD BLDG G2 5.2.14 7/172014 9:48:M AK 1:16-499 I___f__ ____ _______________________________ Ii I �'A I -` GCE I -- — — — — — m ro I / i I r I I I 4 I 5R I oe I as r I � , I C A_ 'VI E �-3 G V W 3 0' I ° 9% ` q 3 i F F-PiL2 a I S � =7,W 1�, I i , 20.a DS N'T vt \� r I I `16 ,3 , SOD*WO40w 104.19' - � r 45 4 t 6 vo d DRIPPING ROCK LANE S"•9 ZEiGLER ROAD_ __ F A tF2 .i.n FRRY ! gg�gg a�` FOSSIL LAKE P.D.P. FOURTH FILING, FIRST REPLAT 4'�y c.v,.m by vve GRADING PLAN L m.— sr TUN KIWN I I I I I I II 11 II ,I 1 I ,North Star design, Inc. IW AN.Telwn DIN.. UNII I pt h �,hh='L 4.U5 .i `9y FG=23.55 4 �. Z. 25 23.60 23.60 `� J 23.60 23.60 23.6 0 23.60 ...- 2' URB--- 0 'J N �'s T'o OPENING 1 a� oN 23.00 2 3.00 23.00 23.00 23.001' qql ti� S2T °C FF=23.45 5 S p 2ti f ` & FG=22.95 2' METAL SIDEWALK CULVERT & 2' CCONCRETE Z V ti Q LANDSCAPE I b9 3 2� RETAINING WA TW=4921.00 V a g LANDSCAPE RETAINING WALL BW=4919,5 I V -4� m TW-4922.00 N 01 BW=4920.0 >4` m, 1° 0i 4922 `LO6 -; '1.' � roc N g R� I 3 STEPS 9 STEPS .0, 3i I Fi. FF=18.55 1B 45 FG=18.05 N f I O c �0 I ti I s o .tio59 0.20 2' CONCRETE II L g 1 CHANNEL j 18.10 18.10'� 18.10 c, g6b ,gam18.10 h AA OUTFACE CURB & GU . c �0 @� (TYPICAL AS HATCHED) VIA- - ------ -- -' F --- -------- - . use -- ------------------ -- - _ 20.80 19.30 19.30 19.30 19.30 p 19.30 19.30 FF=21.25 INSTALL DRIVEWAY TO RIGHT OF WAY LINE WITH PHASE 1. 5 o\ 4 S S FG=20.75 5 FF=19.75 FG=19.25 / PHASING LINE I bgll6 1 STEP �h TS=18.2 5 STEPS BS=17.7 4 HIGH POINT 6 STEPS FLOWLINE 2' FROM BACK i POINT ELEV-1&2 OF EXISTING WALK. V=20.3 49\5