HomeMy WebLinkAboutFOX HILLS 2 FILING SUBDIVISION FINAL - 36 93D - SUBMITTAL DOCUMENTS - ROUND 1 - DRAINAGE REPORTEFFECTIVENESS CALCULATIONS
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PROJECT: FOX N/LLt PU, D• XGCOND Fiai,VC STANDARD FORM B
COMPLETED BY: )e Ae, DATE: r,c
Erosion Control C-Factor P-Factor
Method Value Value Comment
----------------------------------------------------------
8,lkE-rotL- A" A" I
SF� D/M s vT Tlz,4f- / &D 0-SO
T7',Q-AW BALC-S 10D
LG X/�T/NL
Carr_ 0,06 A------------------ - - --- - I
MAJORI PS SUB AREA
BASINI (0) IBASINI (Ac) I CALCULATIONS
-----I------ ------ I ------ ------------------------------------I
S34.3%I 'G' 10,b Ac. c .Joi4-s - z, iI Ac.
38A,.
�X u7 (j2OvNDCUvP2. 7// AL,
B4,3j,
AAA
GV-rD "C
(0•06 �-7./l) //0.6 = v Z47
Uj'rp P = U. 80 x 0, SO = O, ¢-0
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DI/SF-B:1989
EFFECTIVENESS CALCULATIONS
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PROJECT: Fox 14.11-Ls P. U. D. , Xeco.v v Fit -/Ai& STANDARD FORM B
COMPLETED BY: ,eAk DATE: _
Erosion Control
C-Factor
P-Factor
Method
Value
Value Comment
----------------------------------------------------------
8 A s e t O, L
/. 00
/. 6-v
Se1> nMeyr-7ggQ
/ 0-0
0•50
AvEL_ F",c.rc--L-S
1."
-6.86
STZAw 54LES
AVLGH � i26SEe DING
EX/J T/ uG C9 �O/NDCovEC
0, pb
/
MAJOR
BASIN
PS
84.a%
SUB
BASIN
943°/ I "g„
AREA
(Ac)
/z-OAc.I
/3• /oAc
CALCULATIONS
--------------------------------------------
i3ARe-fo,c.r l.11O .4c. �
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EX/1 T. 6020vND COVE 2.. `i. 9'7 Ac,
(0.06 X /.37) 4-
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E r- El- (6. 1S X 0, 4-0)�/ov -
- 74-/0 ok
BA9e101C. Z.0?-4c
lt. E DEED/N6 = Z. 8SA c.
Exi-rT. G20v,vDCow E,e
W 7 D "c" _ (/100"'OZ) -I-(0,0& XZ BS) 4-
(0.04x g.z3�//1/0 = O,ZI
0. 80 X o. so = 0 4a
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HDI/SF-B:1989
a /c
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/I
RAINFALL PERFORMANCE STANDARD EVALUATION
-------------------------------------------------------------- w
roxHI<-i-s R v, D, Se-co.vt> l=ie-in,& . STANDARD FORM A
COMPLETED
DEVELOPED
SUBBASIN
Ps,
„C
D
BY: P"A-------------
IERODIBILITY
ZONE
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(ac)
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330
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DATE: G 9
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HnT/CF-a•lQAq
CONSTRUCTION SEQUENCE
1 P.ROJECT: Fox N/LL..,r 1� U. A. 1kanae FiLlNG
5_ ..jENCE. FOR 19 qI-- ONLY COMPLETED BY: �2,4
STANDARD FORM C
DATE: G/c/q¢
Indicate by use of a bar line or symbols when erosion control measures will be installed.
Major modifications to an approved schedule may require submitting a new schedule for
approval by the City Engineer.
YEAR
MONTH I J.
----------------------------I---
OVERLOT GRADING I
WIND EROSION CONTROL
Soil Roughing
Perimeter Barrier
Additional Barriers
Vegetative Methods
Soil Sealant
Other
RAINFALL EROSION CONTROL
STRUCTURAL:
.Sediment Trap/Basin
Inlet Filters
Straw Barriers
Silt Fence Barriers
Sand Bags
Bare Soil Preparation
Contour Furrows
Terracing
Asphalt/Concrete Paving
Other
VEGETATIVE:
µ Permanent Seed Planting
Mulching/Sealant
Temporary Seed Planting
Sod Installation
Nettings/Mats/Blankets
Other
--------------------------
STRUCTURES INSTALLED BY
VEGETATION/MULCHING CONTRACTOR
DATE SUBMITTED
HL �F-C:1989
r-
nil I A 1 M
--------------
--------------------
MAINTAINED BY
APPROVED BY CITY OF FORT COLLINS ON
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FOR
STEWART&ASSOCIATES 10 S. MEL93 DR1 A , F82 T COLLINS, CO 80521
82
Consulting Engineers and Surveyors
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STEWART$,LSSOCIATES 10 S. MEL9 3DiRUM,FAX FORT COLLINS, CO 80521
82
Consulting Engineers and Surveyors
By: 2 A te,. Date: / . a Client:, �n p- I ,v 6 r-l. n G rg /r de.,,,1:,-cSheet No. of
Project: F 6 x i, e c r /� 1/ n F E C n o) n F;-., ,v
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S. MELDRUK, FORT
STEWART& SSOCIATES PH 82-9 31 FAX 482-9380LLINS, CO 80521
Consulting Engineers and Surveyors
By: Date: W61,9 3 Client:J,-z i,v,- F f c G %,,4 Jr- UewT Sheet No. of
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STEWART&NSSOCIATES 103 $
. MELDRUM, FORT COLLINS, CO 80521
PH. 482-9331 FAX 482-9382
Consulting Engineers and Surveyors
By: Date: /z/6/,?-., Client: .f,pp/ No. '5- of
Project: 16, U. D. 7 AJ t,,
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STEWART&ASSOCIATES 103 PH. S. 933 RF , FORT COLLINS, CO 80521
Consulting Engineers and Surveyors
By: i2 A k Date: IzZ&193 Client: , fo;2 .v c. f is c.g G rH Jr. UE/V ran; Sheet No. 4- of
Project: o Y r( 1 e r_ - P. 0.
Subject: -r0 f A,, CAL(^_VLATinn/t
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STEWART&ASSOCIATES 103 . MELDR2-9331 FM, FAX ORT COLLINS, CO 80521
PH.382
Consulting Engineers and Surveyors
By: Date: 17. G Client: _ S�C2) Sheet No. of
Project: )- i?x li l [. C 17 (%• D . S SCQ AV D Flz4A)
Subject: S-2222ni U,/'A I-E./2 vnigFA= rALG//I-ATin f)
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Fox Hills P.U.D., Second Filing
Page 2
The site historically drains east onto Taft Canyon, Third Filing, and
then southeasterly through what is now Tract "D" of the Replat of Taft Canyon
which is the upper reach of the Burns Tributary of Fossil Creek. The developed
runoff will continue the same pattern by draining to detention ponds on either
side of Wessex Drive which is the stub street west from Idledale Drive. There
is an existing 24—inch diameter storm drain under Idledale Drive and an existing
drainage swale between two lots leading to Tract "D".
Erosion control will be an important part of the development of this
project due to the steepness of the slopes between the clusters and the open
space. The ravines have .some existing erosion that will be reseeded after
they are stabilized using geo—fabric. The cut and fill slopes that will be
required for the construction of the second access drive will require
stabilization with fabric and also reseeding. The swale and berm along the
east property line will trap any silt that may result during construction and
keep it from entering Taft Canyon P.U.D.
The runoff calculations and drainage and grading plans and the erosion
control calculations are enclosed as a part of this preliminary report. Please
call if you have any questions during your review.
Sincerely,
Richard A. Rutherford, P.E. & L.S.
President
jrr
enclosures
' 5028
;• A :
STEWART&ASSOCIATES
Consulting Engineers and Surveyors
June 6, 1994
Mr. Basil Hamdan
Storm Water Utility
City of Fort Collins
P.O. Box 580
Fort Collins, Colorado 80522
Dear Basil -
The following is the final storm drainage report for Fox Hills P.U.D.,
Second Filing. The site contains 33.17 acres and is located in the Fossil
Creek Drainage Basin. The P.U.D. is situate in the East 2 of the Southwest
of Section 33, Township 7 North, Range 69 West of the 6th P.M., Larimer
County, Colorado
The P.U.D. is bounded on the north by County Road 38-E, on the east by
Taft Canyon Third Filing, on the south by Westridge Estates, and on the west
by Fox Hills P.U.D., and by Wildflower Ridge P.U.D. which are Larimer County
planned unit developments, and by the partially constructed Red Fox Road.
The Fox Hills P.U.D., Second Filing, has 33 proposed single-family detached
lots clustered around four cul-de-sacs on the relatively flat plateau
overlooking Taft Canyon P.U.D. The lots vary in size from approximately 8,000
square feet to 17,000 square feet. The lots and streets contain approximately
ll.-1 acres, and the balance of 22.1 acres will be common open space. Most
of the open space is fairly steep and has native ground cover and bushes.
The site slopes from west to east with the west 150 feet to 300 feet,
which contains the proposed clustered lots, having slopes that vary between
5% and 7%. The open space slopes vary between 5% and 25%.
The steep slopes and the ravines will not be disturbed except during the
construction of the second point of access road and the proposed sanitary sewer
outfall line. Those areas that will be disturbed will be stabilized and
reseeded.
The site drains to the Burns Tributary of the Fossil Creek Drainage Basin.
According to the Master Drainageway Planning Study prepared by Simons, Li and
Associates, Inc. and dated August 1982, no onsite storm water detention is
required in this upper reach of the basin. However, due to the steep slopes
on site and the fact that the storm water runoff is being changed from sheet
flow to point flow, we are providing onsite storm water detention,
James H. Stewart
and Associates, Inc.
103 S. Meldrum Street
P.O. Box 429
Ft. Collins, CO 80522
303/482-9331
Fax 303/482-9382
0
FINAL DRAINAGE REPORT
FOR
FOX HILLS P.U.D., SECOND FILING
PREPARED
FOR
SPRINGFIELD 6TH FILING JOINT VENTURE
JUNE 6, 1994
STEWART & ASSOCIATES, INC.
103 SOUTH MELDRUM STREET
FORT COLLINS, COLORADO 80521
303/482-9331