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HomeMy WebLinkAboutLot Certifications - 03/02/2017 (4) 10056 Brisbane Lane Littleton Colorado 80130 tel 720-240-5882 fax 720-223-6092 www.civas-eng.com March 2, 2017 Jon Tschetter MERITAGE HOMES 6892 S. Yosemite Court Centennial, CO 80112 Re: Lot 300 and Lot 302, Rigden Farm Filing Six Certification of Lot Grading Jon, We have reviewed the lot grading certification for Lot 300, Rigden Farm Filing Six, prepared by our office on November 28, 2016 and the lot grading certification for Lot 302, Rigden Farm Filing Six, prepared by our office on June 9, 2015 and it is our professional opinion that the lot grading for both Lots 300 and 302, at the time the certification, was properly graded and in conformance with the approved Grading and Erosion Control Plan for Rigden Farm Filing Six and if the grading and drainage patterns are maintained, there would be no adverse impacts to the subject lots. We also performed a site visit on February 27, 2017 to review the lot grading on Lot 300. It appears that the lot grading for Lot 300 is still in general compliance with City approved Grading and Erosion Control Plan for Rigden Farm Filing Six and that a majority of the rear yard runoff is directed to the rear property line as shown on the survey. There is a small area of the rear yard does slope toward the easterly side property line, however, that is in accordance with the approved Grading and Erosion Control Plan (attached). From our site visit, it does appear that a small earth berm at the back of the straw wattle along the easterly property line directs runoff toward the northeast rear property corner and onto Tract AP. However, it is possible that the straw wattle along the rear property line could impede the flow of drainage from Lot 300 onto Tract AP. In order to ensure that runoff from northeast corner of Lot 300 flows onto Tract AP and not onto Lot 302, we would recommend that a clear drainage path be maintained to the north and onto Tract AP. We would like to note that the drainage in Tract AP is supposed to be directed to north in a shallow swale as shown on the approved Grading and Erosion Control Plan (attached). However, the review of the grading in Tract AP is beyond the scope of our Grading Certification. Since no survey information is available for Tract AP, we cannot determine if the shallow swale was constructed. Additionally, we did not review it at the time of our site visit. If the shallow swale in Tract AP was not constructed, drainage from Tract A might be directed onto Lot 302 and not to the north as shown. If this is the situation, then some corrective measures in Tract AP should be taken. However, it is important to note that this is not due to the grading on Lot 300. I am available to meet on site to discuss these issue if needed. Sincerely, CIVAS Engineering, LLC. Steven M. Strickling, P.E. /15 Page 1 CERTIFICATION OF LOT GRADING Pursuant to City Code § 26-544 & City Land Use Code § 3.3.2 (e) Date: Address: Lot: Block: Subdivision: Permit Application #: Larimer County Parcel #: Larimer County Reception #: (on development agreement) I, (print) , 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 Building Department does not approve grading plans). 2. Certification includes attached as-built survey dated (must be within 60 days of date of certification) accurately and truthfully depicting elevations for: z Top of foundation/finished floor z Finished grade on each side of the structure z Quarter points along each lot line (not more than 50 feet apart) z Break points/high points z Swales z Berms z Retaining walls z Air conditioning pads z Window wells z Any other appurtenance(s) within an easement 3. All elevations are within a 0.2 foot tolerance of the approved grading plan. 4. The top of foundation is at least 6 inches above the highest grade surrounding the structure. 5. There is a minimum grade of 5% away from the structure within the first 5 to 10 feet adjacent to the residence. 6. All slopes meet or exceed the minimum requirement of 2% (1% is acceptable on single 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 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. Runoff is not directed toward neighboring properties. No Yes No Yes No Yes No Yes No Yes No Yes No Yes No Yes SMS SMS SMS SMS SMS SMS SMS SMS runoff to be directed toward the designed side yard swales located on the property lines. unprotected neighboring properties. It is acceptable for November 28, 2016 Rigden Farm Filing Six 2914 Percheron Drive Fort Collins, CO 80525 B1602644 87294-60-300 300 n/a n/a Steven M. Strickling 11-1-16 /15 Page 2 9. A smooth transition (no grade break) is provided to all adjacent properties. 10. The grading of this lot does not adversely affect neighboring properties or City infrastructure. 11. Landscaping has been completed prior to survey. If not, please indicate who will be responsible for completing landscaping: 12. Final site cleanup has been completed. 13. I personally visited the site as part of the certification process, and in my professional opinion, the as-built survey is an accurate representation of the site conditions. . No Yes No Yes No Yes No Yes No Yes 14. Based on this information, I certify that (check one): Ƒ 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). Ƒ 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: Email: Phone: Company: Address: 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 PE Stamp Sign and date SMS SMS SMS SMS SMS 11-28-2016 Metco, the builder's landscaping contractor Steven M. Strickling sstrickling@civas-eng.com (720) 240-5882 CIVAS Engineering, LLC 10056 Brisbane Lane Littleton, CO 80130 ✔ 10056 Brisbane Lane Littleton Colorado 80130 tel 720-240-5882 fax 720-223-6092 www.civas-eng.com November 28, 2016 FORT COLLINS UTILITIES 700 Wood Street Fort Collins, Colorado 80521 Re: Lot 300, Rigden Farm Filing Six Certification of Lot Grading The elevations and drainage patterns for Lot 300, Rigden Farm Filing Six are in general conformance with the elevations shown on the City approved Grading and Erosion Control Plan for Rigden Farm Filing Six with a few exceptions. The easterly side property line elevation at the intersection with the northerly rear property corner of Lot 301 is approximately 0.4 feet higher, the easterly side property line elevation at the intersection with the southerly rear property corner of Lot 301 is approximately 2.1 feet higher, and the westerly rear property corner elevation is approximately 1.0 foot high than those shown on the Grading and Erosion Control Plan. Additionally, retaining walls were constructed along portions of the side property lines in order to construct a standard basement. We have reviewed the grading for Lot 301 and Lot 299, which are adjacent to the easterly side yard of Lot 300, and the 2.1 feet higher grade at the side property line of Lot 300 will not adversely impact the grading on Lot 299 of Lot 301. Therefore, it is our professional opinion that these exceptions are not significant. Additionally, the elevations and drainage patterns are in conformance with the City of Fort Collins lot grading criteria and therefore it is our professional opinion that stormwater drainage will generally be consistent with the City approved Grading and Erosion Control Plan for Rigden Farm Filing Six. Sincerely, CIVAS Engineering, LLC. 11−28−2016 Steven M. Strickling, P.E. & TOF=4905.80 #2914 T:\Projects\RIGDEN FARM F6\RIGDEN FARM FILING SIX.dwg, 11/22/2016 6:57:09 AM, KPollack Utilities electric • stormwater • wastewater • water 700 Wood St. PO Box 580 Fort Collins, CO 80522 970.221.6700 970.221.6619 fax • 970.224.6003 TDD utilities@fcgov.com • fcgov.com/utilities CERTIFICATION OF LOT GRADING Pursuant to City Code § 26-544 and City Land Use Code § 3.2.2 (e) Date: June 9, 2015 . Permit Application No. B1412794 . Address: 3257 Bryce Drive . Lot: 302 Block: n/a . Subdivision: Rigden Farm Filing Six . I,(Print) Steven M. Strickling , 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): May 18, 2015 , 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. □ 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. 6−9−2015 For and On Behalf of CIVAS Engineering, LLC By: (signature, PE stamp) 10056 Brisbane Lane, Littleton, CO 80130 (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 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 (e.g. swales, retaining walls, lot corners), written information/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. 1/27/12 At least Two Weeks Prior To Requesting A Certification Of Occupancy For The Property & TOF=4895.72 #3257 T:\Projects\RIGDEN FARM F6\RIGDEN FARM FILING SIX.dwg, 6/5/2015 3:39:17 PM, vrangel