HomeMy WebLinkAboutPEAK VIEW REPLAT BLOCK 1 - Filed GC-GENERAL CORRESPONDENCE - 2008-04-17PE
March 3, 2004 PICKET T
ENGINEERING, INC.
Sheri Wamhoff
Development Review Engineer
City of Fort Collins Engineering Department
281 North College
Fort Collins, Colorado 80524
RE: Revised Detention Pond Re -Design
Peak View Subdivision
PEI No. 03-070
Dear Sheri:
We are submitting for your review the revised detention pond layout and grading for the Peak
View Subdivision. The re -design of this detention pond only includes modifications to the layout
and grading and not to the analysis of the conveyance structures to the pond or the outlet control
and spill structures. Our criteria regarding the detention volume was obtained from the storm
drainage report prepared by Craig C. Houdeshell from the Engineering Design and Research
Corporation. Using Mr. Houdeshell's Pond Rating Curve —revised September 14, 2002—the
needed volume (based on a water surface elevation of 5117.6) is 102,126 cubic feet. The re-
design of the detention pond, as illustrated by the attached drawing C-1.1, has the capacity to
detain 104,828 cubic feet at elevation 5117.6.
As for the block retaining walls, the contractor shall submit shop drawings designed and sealed by
a Professional Engineer registered in Colorado to our office for approval prior to commencing
with the wall construction. Additionally, we will work with the contractor to determine the most
feasible construction method for the handrail foundation in conjunction with the wall design.
Sincerely,
1C.
KAP/pkg
attachment
cc: Don Leffler, Design Development Consultants
Vicki Wagner, BLS Development
808 8th Street -- Greeley, CO 80631
Phone (970) 356-6362 — Fax (970) 356-6486