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HomeMy WebLinkAboutLot Certifications - 03/13/2017 (6)TT Date: 03/09/2017 Address: 4751 Pleasant Oak Drive, 1354-1353 Lot: 2 Block: Subdivision: Oakridge Business Park 38th Filing Permit Application #: Larimer County Parcel #: Larimer County Reception t: (on development agreement) I, (print) TIMOTHY JAMES HALOPOFF ' a Colorado registered professional engineer, verify that construction of all stormwater facilities and grading is complete and hereby submit this certification. Please answer the following questions by initialing the appropriate response. For each question initialed "No," attach an explanation detailing how this will affect stormwater drainage for this lot and any adjacent lots. 1.Certification includes attached Stormwater-approved grading plan. (NOTE: City's No Yes TH Building Department does not approve grading plans). 2.Certification includes attached as-built survey dated 03/03/17 (must be within 60 No Yes 774 days of date of certification) accurately and truthfully depicting elevations for: • Top of foundation/finished floor • Finished grade on each side of the structure • Quarter points along each lot line (not more than 50 feet apart) • Break points/high points • Swales • Berms • Retaining walls • Air conditioning pads • Window wells • Any other appurtenance(s) within an easement 3.All elevations are within a 0.2 foot tolerance of the approved grading plan. No 1 1 -t Yes 4.The top of foundation is at least 6 inches above the highest grade surrounding the No 74 Yes structure. 5.There is a minimum grade of 5% away from the structure within the first 5 to 10 feet No Yes 72 adjacent to the residence. 6.All slopes meet or exceed the minimum requirement of 2% (1% is acceptable on single No Yes TH family lots when the swale is draining the runoff from only two adjoining properties) and are not steeper than 25% (4:1). 7.All flow lines of stormwater drainage swales are a minimum of 6 inches below the No Yes T)1 elevation of ground adjacent to the structure and will direct drainage as shown on the Stormwater-approved grading plan. 8.All downspout locations and discharge directions are shown on the as-built survey. No Yes TT)1 Runoff is not directed toward neighboring properties. 12/15 Page 1 9.A smooth transition (no grade break) is provided to all adjacent properties. No Yes T'i 10.The grading of this lot does not adversely affect neighboring properties or City No Yes ¶SH infrastructure. 11.Landscaping has been completed prior to survey. If not, please indicate who will be NoT!rA Yes responsible for completing landscaping: %rb,f c46s T Il.Ji1#iLL. 12.Final site cleanup has been completed. No Yes 7)4 13.I personally visited the site as part of the certification process, and in my professional No Yes TMA opinion, the as-built survey is an accurate representation of the site conditions. 14.Based on this information, I certify that (check one): E 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). 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. Name: TIMOTHY JAMES HALOPOFF 46 0 Email: thalopoff©jrengineering.com Phone: 303-267-6230 :0 379,53 00 1 Address: 2900 S. COLLEGE AVE, SUITE 3D Company: JR Engineering ONA FORT COLLINS, CO 80525 PE Stamp Sign and date NOTE: A complete certification must be submitted at least two weeks prior to a request for a Certificate of Occupancy for the lot/site, including, but not limited to, drawings of the lot/site showing the approved design and as-built surveyed elevations of all structures, drainage and grading features, written information/explanation of discrepancies, and other information necessary to confirm the above certification to: Email (preferred) WaterUtilitiesEng@fcgov.com Mailing Address Fort Collins Utilities ATTN: Water Utilities Engineering 281 North College Avenue Fort Collins, CO 80521 Questions? 970-221-6700 Cit y f Ft0Collins 12/15 Page 2 DRAINAGE CERTIFICATE <, 'N: I , 68.8 I S. K © /2' 'N ' N 7 N,I'Q x689P68.9 ... ill N 1 69.0 N \ % /N .ol 'N 68.8 / 68.3 J / -------' / / ,' // 69.0 68.3 / / 676 ,/- / / ' ' N N \ / / N CONC. DRIVE// "N 'N N / 67.0 ,/.\ ,/ AVG. 1.7% / 668 ,'c I // L691 V I N 68.0 // 'N IQ 69 1 N / " </\ 593 68.9 69.7- )68.2 ,6e. 69.5 AC PAD UNIT 30-B '7 (854) 68.8 ,' / N' 69.0 FF=4969.8 ,"CONC. DRIVE 0 69.1 AVG. 5.3% TOF=4969.6 ,X\ 'N 68.5 / , .. , ' 68.8ç\ / x67.9N ' N N . 69.1 \ Nok 68.9 69.1 69.7 AC PAD (B53) 68.8 69.2 UNIT 31-B 68.3 FF4969.8 68.4 J N < > AREA DRAIN TOF=4969.6 67.9 / N 6 / N " HP 69.1 68.7 - ' /// CONC. DRIVE ' /, x7.4 66.8 / i AVG. 2.7%,' . N 685 AREA DRAIN 6' N -69.7 67.6-1 0 / ' <',==N'" N - - 68.8 69.0 6> 67.3 67.8 69.0 68,L 67.8 67.7 = 69.0 7-x 67.6 UNIT 32-B HP AC PAD (1352) 67.8 /co 68.7 < (FUTURE) FF=4968.5 67,8-.. 67.2 ' 67.8 TOF=4968.3 LEGEND 20 10 0 20 : ROOF DRAINS = O'c I ORIGINAL SCALE: 1" = 20' THE PROPERTY DESCRIBED AS: LOT 2, OAKRIDGE BUSINESS PARK 38TH FILING, RECORDED UNDER RECEPTION NO. 20060031898, CITY OF FORT COLLINS, LARIMER COUNTY, STATE OF COLORADO. DESCRIBED PROPERTY KNOWN AS: 4751 PLEASANT OAK DRIVE 854 & 853 DRAINAGE CERTIFICATE I HEREBY CERTIFY THE ELEVATIONS AND DRAINAGE PATTERNS SHOWN WERE DEVELOPED FROM SURVEYING THE PROPERTY ON MARCH 03, 2017 AND ACCURATELY DEPICT THE ELEVATIONS EXISTING DURING THE SURVEY. THE ELEVATIONS MAY CHANGE SUBSEQUENT TO THE SURVEY DUE TO SUBSIDENCE, UPHEAVAL, EROSION, ACTS OF MAN OR OTHER FACTORS. THEREFORE, THIS CERTIFICATE MAY NOT ACCURATELY DEPICT THE ELEVATIONS AND DRAINAGE PATTERN AFTER THE DATE OF SURVEY. THE UNDERSIGNED, A REGISTERED PROFESSIONAL ENGINEER/SURVEYOR, CERTIFY I HAVE INSPECTED THE SURVEY DATA AND HAVE CONCLUDED THE LOT WILL DRAIN ADEQUATELY IN CONFORMANCE WITH THE OVERALL SUBDIVISION DRAINAGE PLAN AND INDIVIDUAL LOT GRADING PLAN. DRAINAGE CERTIFICATE LOT 2, OAKRIDGE BUSINESS PARK 38TH FILING UNITS 30-13, & 31-8 4751 PLEASANT OAK DRIVE, 854 & B53 TRITON COMMUNITIES JOB NO. 39682.00 MARCH 09, 2017 TIMOTHY JAMES HALOPOFF, P.E. COLORADO LIC. PE NO. 37953 FOR AND ON BEHALF OF JR ENGINEERING, '.-lo ) JR ENGINEERING AWestrian Company Cr 3-710-3 • Co Sñgs 7-53-2593 … 7200 South Alton Way, Suite C400 Centennial, CO 80112 303-740-9393 x Fax 303-921-7320 … 3930 Sinton Road, Suite 219 Colorado Springs, CO 80907 719-593-2593 x Fax 303-921-7320 X 2900 South College Avenue, Suite 3D Fort Collins, CO 80525 970-491-9888 x Fax 303-921-7320 MEMORANDUM To:City of Fort Collins, Bldg Dept. From:Tim Halopoff, PE Date:3-10-2017 Subject:4751 Pleasant Oak Drive, Units B53 & B54 – Drainage Certificate Supplement Certification of Lot Grading - Supplement Item: 3.Not all elevations are within 0.2’ of the approved grading plans, but the drainage intent has been met without impacts to adjoining properties. Area Drains were introduced during construction at 2 locations around structure, but secondary overflow paths are as originally approved. 4.All grades surrounding structures are at least 6’’ (0.5’) below TOF, except at the front yard concrete patio area where the grades are +/- 4’’ (.33’) below TOF. 11. It is industry standard to certify the grades prior to landscape installation. The landscaping was not complete at time of survey. A Westrian Company X: \ 3 9 6 0 0 0 0 . a l l \ 3 9 6 8 2 0 0 \ D r a w i n g s \ S h e e t D w g s \ 3 9 6 8 2 0 0 - C i t y M a s t e r G r a d i n g . d w g , G r a d i n g P l a n 3 , 9 / 2 9 / 2 0 1 4 2 : 1 6 : 3 9 P M , G e n g H