HomeMy WebLinkAboutSite Certifications - 07/15/2004AYRES
ASSOCIATES
July 15, 2004
Mr .. Jay Barber
City of Fort Collins
Stormwater Utility
700 Wood Street
Fort Collins, Colorado 80521
STORMWATER
RECEIVED
JUL 1 5 2004
Re: Drainage Certification for the Christ Fellowship Church Subdivision, Lot 1
Dear Jay,
We recently surveyed grading and drainage associated with the construction of a new church
building and associated landscape and parking lot improvements. The lot is located on the
southwest corner of Ziegler Road and Charlie Lane in southeast Fort Collins. Spot elevations
and as-built contours were checked at pertinent locations and compared to the grading plan to
verify whether the grading met the intent of the approved grading and drainage plan. The
enclosed drawing shows both the grading plan and as-built spot elevations.
In general, the lot and building construction meet the requirements of the grading and drainage
plan and there is positive drainage away from the building on all sides. The intended drainage
patterns are met by the grading on this lot, with slopes set for drainage to fl<;>w radially outward
from the building. The finished floor elevation of 4927 .50 meets the design elevation . Spot
elevations surveyed in the parking lot show that the design intent was met, with water flowing to
the southeast corner of the paved section. Thereupon , it transitions smoothly to the existing
swale traveling east. A high point at the northeast corner of the park ing lot directs water north to
Charlie Lane. The maximum variation from design elevations is approximately 0.5 feet ,
however, positive drainage is met throughout the parking lot.
It is my recommendation that the Certificate of Occupancy be released since the Contractor
constructed the building and graded the lot to meet design drainage patterns. If you have any
questions , please call.
Sincerely ,
Owen Ayres & Associates, Inc.
c?:e/
Eric Lessard, P.E.
Project Engineer
EL:SP
Enclosure
Owen Ayres & Associates, Inc.
Engineers/Scientists/Surveyors
3665 JFK Parkway, Building 2, Suite 200 , P.O. Box 270460 , Fort Collins, CO 80527
(970) 223-5556, Denver Metro (303) 572-1806 , FAX (970) 223-5578
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BARB7L T3 .DOC
32-0828 .00
AYRES
ASSOCIATES
July 23, 2004
Mr. Jay Barber
City of Fort Collins
Stormwater Utility
700 Wood Street
Fort Collins, Colorado 80521
Re: Drainage Certification for the Christ Fellowship Church Subdivision, Lot 1
Dear Jay,
STORMWATE R
RECEIVE D
JUL 2 3 2004
This is a follow-up letter to the drainage certification letter Ayres Associates submitted to you on
July 15, 2004. The certification letter was done for the Christ Fellowship Church Subdivision,
Lot 1. The property is located at the southwest corner of Ziegler Road and Charlie Lane in
southeast Fort Collins. We recently surveyed the inlet invert and outlet invert elevations for the
two 18-inch stormsewers running east-west at the southeast corner of the Church property. The
enclosed drawing shows the alignment and location of the pipes.
The invert in for the stormsewer was surveyed at 4918.9 and the invert out is 4981.0. Ayres
Associates was not present during construction and therefore is reporting the following
information per the contractor involved in the installation. The stormsewer has a minimum of 2
feet of cover and the attached drawing shows the approximate location of the grade break in the
pipe. If you have any questions, please call 223-5556.
Sincerely,
Owen Ayres & Associates, Inc.
~~ Eric Lessard, P.E.
Project Engineer
EL:SP
Enclosure
Owen Ayres & Associates, Inc.
Engineers/Scien t ists /Surveyors
3 <(S-~ "2--1~9l~r-
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3665 JFK Parkway , Building 2, Suite 200, P.O. Box 270460, Fort Collins, CO 80527
(970) 223-5556, Denver Metro (303) 572-1806, FAX (970) 223-5578
Printed on recycled paper
BARB7L T4.DOC
32-0828 .00
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DOHN CONSTRUCTION, INC.
RE: Christ Fellowship Church Drainage
Glen,
Through discussions with Dick Bivens at Barker Construction, as they were laying the
18" ADS pipe they followed the grade of the existing topography. They maintained two
feet of ground cover over the pipe. As the grade began to fall to the retaining pond they
followed that grade with the pipe. At the end of the pipe at the retaining pond, they
encountered a gas line which forced them to lower the end of the pipe under the gas line.
Respectfully,
Todd Annand
Project Manager
2642 Midpoint Drive, Unit A Fort Collins.Colorado 80025 (970) 490-1855 Fax (970) 490-6093