HomeMy WebLinkAboutPARAGON POINT PUD PHASE FIVE PRELIMINARY - 48 91K - CORRESPONDENCE - WETLANDS DOCUMENTSMarch 16, 1995
Ted Shepard
Planning Department
City of Fort Collins
RE: Paragon V P.U.D.
Wetland Impacts
Dear Ted:
Attached are responses from the project engineer and the wetland
consultant regarding development impacts on the existing wetland in
Paragon V P.U.D. The wetland consultants letter is in the draft stage
because Terry McKee, Army Corps of Engineers, has provided input to
this information, but has not been able to review the final contents of
the letter. Although no modifications are anticipated, an original copy
of the final letter will be provided to the city.
We hope that these revisions address the concerns of the development
review staff.
Sincerely,
JIM SELL DESIGN INC.
Kay F ce
cc: Rob Wilkinson
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March 14, 1995
Mr. Rob Wilkinson
City of Fort Collins
Natural Resources Department
281 North College Avenue
P.O. Box 580
Fort Collins, CO 80522-0580
Re: Paragon Point P. U.D. - Phase Five
Project No. 10-695-024
Dear Rob:
This letter is in response to a memo we received March 9, 1995 from Ms. Kay Force. The
memo stated that you need more information regarding the wetland impact, specifically the
frequency of flows, change in flow, and erosion control for the Paragon Point P.U.D. - Phase
Five Project.
At this time we have not prepared a Final Drainage and Erosion Control Report for Phase Five
due to this being a preliminary submittal. However, there is no more or less flow draining into
the wetlands than the historic condition. The flow will increase when the site is developed..
Paragon Point P.U.D. requires no detention due to its proximity to Fossil Creek.
If there are any further questions prior to the final submittal of Paragon Point - Phase Five
please do not hesitate to call our office.
Very truly yours,
TST, INC. CONSULTING ENGINEERS
G. Sheaffer
KCS/Ing
TST, INC.
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14a WAxlao Way - BuildingD 11111nn•rnr.x'rmuii Fag
14v1 Cnllim, f•D x0525 Suite 115
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MAR-14-95 TUE 2:46 Phi P, 2
MAR-16-1995 16:56 FROt IVERSIDE TECHNOLOGY,INC TO 4642443 P.02
Riverside Technology, inc.
Water Resources Engineering and Consulting
March 16, 1995
Rob Wilkinson
Environmental Planner
City of Fort Collins
P.O. Sox 580
Fort Collins, CO 80522
RE: Paragon Point V P.U.D.
Dear Mr. Wilkinson:
DRAFT
This letter is written at the request of Ms. Kay Force, Planner for Jim Sell Design, Inc., to
provide information on potential impacts to jurisdictional wetlands resulting from proposed
residential real estate development of the Paragon Point V Y.U.D.
The Paragon Point V P.U.D. is an approximately 4-acre plat in the City of Fort Collins, Latimer
County, Colorado, located northeast and adjacent to the intersection of Lemay Avenue and
Trilby Road. The Paragon Point V P.U.D. contains a wet meadow (palustrine) wetland
dominated by herbaceous vegetation consisting of inland saltgrass (Distichlis spicata), fox -tail
barley (Hordeum jubatum), and saltmarsh sandspurry (Spergularia marina) surrounded by
uplands dominated by Kochia a.k.a. Mexican summer -cypress (Kochia scoparia) and
wheatgrasses. In October 1994, Riverside Technology, inc. (RTi) personnel delineated a total of
0.45 acre of jurisdictional wetlands within the Paragon Point V P.U.D. as described in the RTi
report entitled Jurisdictional Wetlands Delineation Survey for the Paragon Point V Site, Fort
Collins, Colorado (November 1994). The jurisdictional wetland delineation was approved by
the U.S. Army Corps of Engineers (COE) Tri-Lakes Project Office (COE reference action
#199480983) in a December 15, 1994 letter from Terry McKee to Steve Johnson.
The 0.45 acre of jurisdictional wetlands is located in an isolated low-lying depression that
contains no discernible stream channel or tributary to Fossil Creek and is outside of the 100-year
floodplain of Fossil Creek. The water source supporting the wetland is sfortnwater runoff from
Trilby Road and Lemay Avenue, and urban runoff from the Paragon Point 1V residential real
estate development to the north.
The following discussion of wetland functions and values associated with the Paragon Point V
P.U.D. is based on conversations with Mr. Terry McKee (Environmental Resource Specialist for
the COE Tri-Lakes Project Office). Wetland functions are the physical, chemical, and biological
attributes of a wetland; wetland values are the attributes of a wetland that are beneficial to
society.
The jurisdictional wetland area provides the following functions: minimal water quality
treatment and flood retention; limited ground water recharge; and minimal wildlife habitat.
XP435A
2821 Remington Street Fort Collins, Colorado 80525 (303) 223-2944 FAX: (303) 223-2955
pink-16-95 THU 5:01 PM 303 223 2955 P. 2
MAR-16-1995 16:57 FRU IVERSIDE TECHNOLOGY.INC
TO 4842443 P.03
Page 2
R. Wilkinson
March 16, 1995
DRAT
Ponding caused by stormwater runoff retention is episodic and of short duration (likely less
thanone day). The area would provide seasonal nesting habitat and a food source (insect
populations during wet periods) for players, shorebirds, and passerine birds. Rodents would be
expected to frequent the wetland area, providing a food source for raptors. Prairie dog burrows
are established in the wetland area during dry periods then abandoned during wetter periods.
The wetland values associated with the Paragon Point V P.U.D. are aesthetic and based on the
preservation of a non -urban setting (i.e., wetland vegetation as opposed to lawns and other
introduced vegetation) and the opportunity for seasonal bird watching.
Potential impacts to the wetlands area during construction include increased sediment load in
stormwater runoff, and filling from grading. Increased nutrient loading in the form of nitrogen
and phosphorus from adjacent fertilizer application are not anticipated to have any water quality
impacts to the wetland area because of the unlikelihood of ponded water that could become
eutrified. Best management practices (BMPs) for mitigation during construction would be
sediment controls, such as silt fences or staked straw bales. BMPs for mitigation after
construction would be sediment controls in the form of vegetated inflow channels using
vegetation such as sod -forming grasses.
If you have any questions regarding this letter, please call me.
Sincerely,
Riverside Technology, inc.
Stephen W. Johnson
Water Quality Hydrologist/Wetlands Delineator
cc: Richard Sports (RTi)
Kay Force -(Jim Sell Design, Inc:) — - — — -
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