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Home My WebLink AboutLot Certifications - 08/08/2005 (5)NORTHERN ENGINEERING SERVICES, INC. LOT GRADING CERTIFICATION LETTER July 29, 2005 Jay Barber City of Fort Collins Stormwater Utility Department 700 Wood Street Fort Collins, Colorado 80521 Subdivision: Eagle Cliffs Lot Number: 5, Block 3 Address: 1009 Nightingale Drive Building Permit Number: B0407309 (main); B0407310 (guest) Surveyed By: Northern Engineering Services, Inc Date of Survey: July 20, 2005 Fort Collins Benchmark(s): City Identifier "FC27-94" Elevation = 4924.60 City Identifier "26-94" Elevation = 4925.16 Dear Mr. Barber: On behalf of our client, Drahota Construction Company, we would like to submit to you a lot grading certification letter for Lot 5, Block 3 of the Eagle Cliffs project. This lot was constructed with a one-story, wood & stone, single-family residence with a basement. Northern Engineering has reviewed the as - constructed elevations provided by a field survey crew. The residence on Lot 5 was constructed with a finished floor elevation of 4918.39 and a minimum opening elevation (MOE) of 4911.3. The MOE occurs along a concrete retaining wall built at the patio for the walkout basement. Although this is lower than the MOE shown on the grading plan (4911.7), we believe the intent of the grading plan has still been met. The intent of the grading plan was to provide protection from the adjacent swale on the south side of the lot. The swale has a 100-year minimum depth of 0.44-foot (this is with a safety factor of 1.33). The invert of the Swale was constructed at 4909.8, thus the 100-year water surface elevation would be 4910.24, leaving 1.06 -feet of freeboard. The proposed top of foundation elevation and MOE for this lot were 4917.2 and 4911.3 respectively. While the Engineer does not have knowledge of the constructed difference between finished floor and top of foundation, it is safe to assume that the actual top of foundation is well above the approved elevation. Attached for your convenience are copies of the approved design elevations as well as the as -built grades (handwritten) for Lot 5. The constructed finished floor is above the approved design elevation. Furthermore, the surrounding lot grades are in close compliance with the approved grading plan. Sufficient fall exists away from the building to provide proper drainage. The high points on the lot lines split the drainage down side lot swales within drainage easements. Lot 5 is not adjacent to any major constructed drainage elements. Runoff from the front of this lot is directed towards Nightingale Drive, and runoff from the rear of the lot flows towards the Block 3 swale 420 SOUTH HOWES, SUITE 202 / FORT COLLINS, COLORADO 80521 / 970.221.4158 / FAX 970.221.4159 and underdrain. Lot 5 is not within the limits of any 100-year ponding. However, the lot is located adjacent to the Fossil Creek I00-year floodplain and buffer setback. The following site photographs serve to document the improvements present the day the field survey was performed. Lot 5 - North side from front Lot 5 - South side from front I K Lot 5 - North side from back Lot 5 - South side from back ENGINEER'S STATEMENT OF COMPLIANCE: This certification is signed and stamped by a professional engineer registered in the State of Colorado. By signing this certification the engineer attests that to the best of his knowledge the surveyed grading as shown in the enclosed certification is in compliance with the approved grading plan for this lot and subdivision as shown on the approved final utility plans. Please call us if you have any questions regarding this certification letter. Sincerely, NORTHERN ENGINEERING SERVICES, INC. aron T. Cvar, P.E. Senior Engineer enc. cc: Doug McCarthy — Drahota Construction Company • L"" A 1 Ivry L,=l I II'IC:A I f= FOR DRAHOTA CONSTRUCTION LEGAL DESCRIPTION LOT 5, BLOCK 3, EAGLE CLIFFS SUBDIVISION, CITY OF FORT COLLINS, LARIMER COUNTY, STATE OF COLORADO ADDRESS:1009 Nightingale Drive .,Ar,°"OI IU S I ' I I I 5.0. N�9° 4514 � 10' ES 108�360 I ` 4g 9;� FOUND REBAR Ill 5— �� I N LOT 5 1 STORY I WITH BASEMENT m WOOD &STONE LOT b I N w >=r-_IS � N 1 � J \� �I 12.2' 1� I I I I LEGEND: QO -NAIL & SHINER m � Bo Ul .01 m t , [24 tN m 'T ^ ti. S� 24.2' 1 STORY WOOD OS 0' 1 p0,29••vJ , .., �' , . OR I HEREBY CERTIFY THAT THIS IMPROVEMENT LOCATION CERTIFICATE WAS PREPARED FOR DRAH11 OTA CONSTRUCTION, INC. OF COLORADO AND THAT IT IS NOT q LAND SURVEY PLAT OR IMPROVEMENT SURVEY PLAT, AND THAT IT IS NOT FURTHER BE RELIED UPON FOR THE ESTABLIVEMENTS SHMENT OF FENCE, BUILDING, OR OTHER FUTURE IMPROVEMENT LINES. EXCEPT UTILITOACHY CONNECTIONSOARE ENTIRELY WION THIN THE BOUNDARIES OF THE PARCELCRIEIED PARCEL ON THIS EXTE ' AS SHOWN, THAT THERE ARE NO ENCROACHMENTS UPON THE DESCRIBED PREMISES By IMPROVEMENTS ON ANY ADJOINING PREMISES `EXCEPT AS INDICATE AND THAT THERE IS NO APPARENT EVIDENCE OR SIGN OF ANY EASEMENT CROSSING OR BURDENING ANY PART OF SAID PARCEI EX T AS NOTED. / G Id D. Gilliland P ROWLANDVEYOR �ZL COLORADO P.LS. NODATE NOTICE: ACCORDING TO COLORADO LAW y0U MUST COMMENCE ANY LEGAL ACTION BASED UPON ANY DEFECT IN THIS IMPROVEMENT LOCATION CERTIFICATE WITHIN THREE YEARS AFTER YOU FIRST DISCOVER SUCH DEFECT. IN NO EVENT, MAY ANY ACTION BASED UPON ANY DEFECT IN THIS IMPROVEMENT LOCATION CERTIFICATE BE COMMENCED MORE THAN TEN YEARS AFTER THE DATE OF THE CERTIFICATION SHOWN HEREON. NOTICE: ALL BEARINGS, DISTANCES, AND EASEMENTS ARE PER THE SUBDIVISION PLAT DRAHOTA CONSTRUCTION NORTHERN ENGINEERING 420 South Howes Street, still R V 1 CIE Sla�I N C. do 80521 Phone: (970) 221-4158, Fax: (970) 221-4159 www. northernengi neering. Com FOUND #4 REBAR I I D 11Z_` g LOT 4 15— �>^�VATt�NS �O2pE� 04 KEY MAP NOT To SCALE EAGLE CLIFFS SUBDIVISION PROJECT* ECP I DRAWN BY: NDS DATE DATE: 07/21 /05 Ile CROSSPAN 19, F BANK. ' L 1 6- ouT` 7 \ 12 JTff= 18.3 , / _ �� / // BLOCK 4 PLUG= 266 2 M= 13.8 / � �/ / \ \ — ' .3 1Q.66 M0= 16.8 / LkoFswALE �\\ \ t �/&�_ri \ 3 _ — / VE 61G�AluovT \ j 77.s / _ / 975—�t7.2 7O� 5 �i \ MO— 13.0 — / �� \\/� /' INv= s.eb G/' Y M0= 16.5 Nx / f i MO# 12.2 ER OSION BUFFER IT 5(I EXISTING 1117 Ir 59 EASEIAENT \ \��\� \ It .00K \ �\ �\ `\ 177.6 of swALE \ 6 \ \ / 4 0.4 TF— 1W6 .�8 MO= ITO LOT 1 `. \ Nil IIN CSMT) \\ \\ \ \\\ G 24 \ , �\6" CLEANOUT \ / J \ \ FOSSIL CREEK P�..uG= 9.23 \ 100' \Mv= 7.23 \ 7 _t00cYEAR _ \�.. \\ BUFFER ` \ \\ LAn= 37 Ti isn SFIAal.K \A.