HomeMy WebLinkAboutLot Certifications - 10/07/2016 (10)October 5, 2016
Mr. Dan Mogen
City of Fort Collins Storm Water Division
700 Wood Street
Fort Collins, CO 80524
(970) 221-6700
Re: Grading Certification for 1903 Nancy Gray Avenue, Lot 11 Block 6 of the Spring Creek Farms
North, Filing No. 4 Subdivision
Dear Mr. Mogen,
The purpose of this letter is to provide the grading certification for 1903 Nancy Gray Avenue, of the Spring
Creek Farms North, Filing No. 4 Subdivision, located in Fort Collins, Colorado.
Aspen Engineering reviewed the record survey, prepared by King Surveyors, with survey measurements dated
September 29, 2016. Aspen also visited the project site on October 3, 2016, to visually observe grading within
Lot 11 Block 6. Based on the provided record survey and visual observation, Aspen Engineering asserts that
the proposed grading appears to meet the intent of the approved grading and drainage plan.
Aspen is providing the following as the assessment of Lot 11 Block 6:
1) Grades along the north, south, east, and west property lines vary from approximately 0.50% to
2.48%. The 0.50% grade along the west property line is acceptable, as the area west of the
residence sheets flows west and out to Adobe Drive. Grading around and adjacent to the residence
appears to provide positive conveyance of runoff away from the residence in accordance with the
approved grading plan.
2) The surveyed top-of-foundation (TOF) elevation for the residence is 50.3, versus the proposed TF
of 50.23.
3) Aspen noted that downspouts are located on the southwest, southeast, and northeast corners of the
residence, as well as an additional downspout on the east side of the residence. All downspouts
appear to be located in satisfactory areas, with runoff being conveyed away from the residence and
garage.
4.3% = GRADE PER SURVEYED
ELEVATIONS
RD
= ROOF DRAIN
NOTE: THIS DRAWING HAS BEEN MODIFIED BY
ASPEN ENGINEERING FOR THE PURPOSES OF A
GRADING CERTIFICATION
2.35%
1.37% 1.86%
RD
APPROVED PLAN ELEV (TYP)
24.00%
RD
2.33%
10.55%
RD
RD
0.63% 0.50%
16.00%
28.00%
8.75%
10.74%
4.08%
5.62%
2.48%
30.00%
PLAN TOF = 50.23