HomeMy WebLinkAboutHARMONY RIDGE PUD, PHASE 2 (2ND FILING) - PRELIMINARY / FINAL - 49-95D - CORRESPONDENCE - CITY STAFFi
TST, INC.
10. Acknowledged
11. Acknowledged
12. Acknowledged
13. Planner will address this comment.
Erosion Control
1. Acknowledged
2. Second page to the end of Appendix F.
Sincerely,
TST, INC. CON T NG ENGINEERS
Mike R.Ja son
March 20, 2001
Mr. Basil Harridan
City of Fort Collins
Stormwater Utility Department
P.O. Box 580
Fort Collins, CO 80522-0580
Re: Harmony Ridge P.U.D. Second Filing
Project No. 0927-010
Dear Mr. Hamdan:
The following are the responses to the Stormwater comment sheet dated 12/04/2000:
1. All top of foundation elevations were set at 0.5 feet above the highest
elevation of the lot. The drainage slopes away from the building envelope in
the front and back.. Typically the sides of the building envelopes have
swales. There are a few Instances where drainage needed to flow from back
to front and spot elevations were placed to reflect this.
2. Section G-G and H-H were added with spot elevations to clarify this.
3. A variance is being requested for the runoff in Sub basin E1 that crosses the
Trilby Lateral Ditch. The historic drainage pattern hasn't been altered, the
flow rate has decreased from historic, the historic concentration points
haven't changed and we believe the quality of runoff hasn't changed. I spoke
with Gary Stadele, the president of the Trilby Lateral Ditch whose concern
was sediment runoff Into the ditch. We have added a 1 foot ditch inside of
the silt fence to capture sediment during construction.
4. Water Quality Pond A was added upstream of the retention pond.
5. Entire swale has been rip rapped.
6. Drainage Is directed into existing drainage and utility easements.
7. Acknowledged
8. Trilby Lateral Ditch signature block added.
9. The north flowline of Fromme Prairie Way will enter the existing roadside
ditch and the south flowline will enter a sidewalk culvert where It will flow
south to the natural drainage way.
TST, INC, 748 Whalers Way -Building D
Consulting Engineers Fort Collins, CO 80525
(970) 226-0557
Metro (303) 595-9103
Fax (970)226-0204
Email lufo@tsdnc.com
www.tstlnc.corn