HomeMy WebLinkAboutContract 52007 CITY SECRETARY
CONTRACT NO. fS
CITY PROJECT # 101457
STORMWATER FACILITY
MAINTENANCE AGREEMENT
THIS AGREEMENT, made and entered into this day of
1q , by and between Copper Creek Partners, LP , acting by and through
Copper Creek Partners, LP`, hereinafter referred to as "Landowner", the Copper Creek
Fort Worth Homeowners' Association, Inc., hereinafter referred to as "Association" and
the City of Fort Worth, hereinafter referred to as"City".
WITNESSETH
WHEREAS, the Landowner is the owner of certain real property described as an
approximately _84.423_ acre tract located in the —George Matthews ` Survey, Abstract
1078 , Tarrant County, Texas according to the deed recorded in _D218019672_,
Deed Records, Tarrant County, Texas, hereinafter called the"Property".
WHEREAS, the Landowner is proceeding to build on and develop the Property
according to the Site Plan/Subdivision Plan known as Copper Creek Phase 3
hereinafter called the "Plan", which is expressly made a part hereof, as approved or to be
approved by the City and the Landowner and Association provides for management of
Stormwater within the confines of the Property; and
WHEREAS, the City and the Landowner and Association, and their successors and
assigns, agree that the health, safety and welfare of the residents of the City of Fort Worth,
Texas require that on-site Stormwater Management Facilities be constructed and
maintained on a portion of the Property; and
WHEREAS, the City requires that on-site Stormwater Management Facilities
R�c�6 2D("Facility") as shown on the Plan be constructed and adequately n aintained-by..t e
01a V OFFICIAL RECORD
�\Vl cl ECF51\v, CITY SECRETARY
STO05/14//2014
MATEFACILITY MAINTENANCE AGREEMENT FT VidORTH, 1 X
Landowner, its successors and assigns, including Association, the location and dimensions
of which is shown and more particularly described by metes and bounds in the attached
Exhibit"A" ("Facility Property"); and
WHEREAS, Landowner agrees to convey the Facility Property to the Association
and the Association agrees to accept the Property where the Stormwater Facility is
located.
NOW, THEREFORE, in consideration of the foregoing premises, the mutual
covenants contained herein, and the following terms and conditions, the parties hereto
agree as follows:
1. The Landowner and Association, its successors and assigns, shall adequately
construct and maintain the on-site Stormwater Management Facility
("Facility") at no expense to the City of Fort Worth in accordance with the
design specifications for the Facility, attached as Exhibit `B", and the current
standards then in force and effect in the City of Fort Worth and with the
Operations and Maintenance Plan attached to this Agreement as Exhibit "C".
The Stormwater Facility includes all pipes, channels or other conveyances built
to convey stormwater to the facility, as well as all structures, improvements,
and vegetation provided to control the quantity and quality of the stormwater.
Adequate maintenance is herein defined as good working condition so that
these facilities are performing their design functions. The Stormwater
Structural Control Maintenance Checklists, attached to this Agreement as
Exhibit "D", are to be used to establish what good working condition is
acceptable to the City.
2. The Landowner and Association, its successors and assigns, shall inspect the
Facility and submit an inspection report to the City annually. The purpose of
the inspection is to assure safe and proper functioning of the Facility. The
inspection shall cover the entire Facilities, berms, outlet structure, pond areas,
access roads, etc. Components of the Facility, which need maintenance or
STORMWATER FACILITY MAINTENANCE AGREEMENT 2
Rev.05/14112014
replacement to perform their design function, shall be noted in the inspection
report along with the corrective actions to be taken.
3. The Landowner and Association, its successors and assigns, hereby grant
permission to the City, its authorized agents and employees, to enter upon the
Property and to inspect the Facility Property whenever the City deems
necessary. The purpose of inspection is to follow-up on reported deficiencies
and/or to respond to citizen complaints. The City shall provide the Landowner,
its successors and assigns, copies of the inspection findings and a directive to
commence with the repairs if necessary.
4. In the event the Landowner and the Association, its successors and assigns,
fails to maintain the Facility in good working condition as specified herein, the
City,its authorized agents and employees, may enter upon the Facility Property
and take whatever steps necessary to correct deficiencies identified in the
inspection report and to charge the costs of such repairs to the Landowner, its
successors and assigns. It is expressly understood and agreed that the City
is under no obligation to routinely maintain or repair said Facility, and in
no event shall this Agreement be construed to impose any such obligation
on the City, such obligation is Landowner's.
5. The Landowner and the Association, its successors and assigns, will perform
the work necessary to keep the Facility in good working order as appropriate.
In the event the City pursuant to this Agreement, performs work of any nature,
or expends any funds in performance of said work for labor, use of equipment,
supplies, materials, and the like, the Landowner, its successors and assigns,
shall reimburse the City upon demand, within thirty(30)days of receipt thereof
for all actual costs incurred by the City hereunder. In the event that Landowner
or its successors or assigns fail to pay the City for the costs incurred under this
section, the City shall impress a lien for the costs of such work upon other lots
owned by the Landowner or the Association. Such lien shall be perfected by
filing in the office of the County Clerk of Tarrant County, Texas an affidavit
identifying the property to be charged with such lien, stating the amount
thereof, and making reference to this Agreement.
STORMWATER FACILITY MAINTENANCE AGREEMENT 3
Rev.05/14//2014
6. This Agreement imposes no liability of any kind whatsoever on the City. THE
LANDOWNER AND ASSOCIATION AGREES TO HOLD THE CITY
HARMLESS FROM ANY LIABILITY IN THE EVENT THE FACILITY
FAILS TO OPERATE PROPERLY. LANDOWNER AND
ASSOCIATION COVENANT AND AGREE AND DOES HEREBY
INDEMNIFY HOLD HARMLESS AND DEFEND THE CITY OF FORT
WORTH, ITS AGENTS, SERVANTS AND EMPLOYEES FROM AND
AGAINST ALL COSTS, EXPENSES, LOSSES, DAMAGES, CLAIMS
OR CAUSES OF ACTION WHATSOEVER ARISING, OR WHICH
MIGHT ARISE, FROM THE FAILURE OF LANDOWNER OR ANY
FUTURE OWNERS OF THE FACILITITY PROPERTY TO
MAINTAIN THE FACILITY, INCLUDING, BUT NOT LIMITED TO
THE BED AND BANKS OF THE DETENTION POND; ANY
DAMAGES CAUSED TO PERSON OR PROPERTY DUE TO (1)
FLOODING OF THE POND AND ITS BANKS, (2) SLOPE FAILURE
OF THE BANKS OF THE POND, OR (3) FAILURE OF THE POND OR
ITS BANKS TO OPERATE IN A MANNER CONSISTENT WITH CITY
OF FORT WORTH CRITERIA; OR FAILURE TO PERFORM ANY
OTHER DUTIES OR OBLIGATIONS HEREUNDER.
7. Landowner and Association covenants and agrees that no habitable building
shall be erected within the drainage easement outlined on Exhibit "A" but this
paragraph shall not preclude construction of other improvements within the
drainage easement, which do not impede drainage. Landowner and
Association covenants and agrees that no habitable building shall be erected on
the above property abutting such easement which shall have a finished floor at
an elevation less than two feet above the maximum depth of water in the
detention pond which would occur during a 100 year frequency flood.
8. This Agreement shall be recorded among the land records of Tarrant County,
Texas, shall constitute a covenant running with the land, and shall be binding
on the Landowner, its administrators, executors, assigns, heirs and any other
successors in interests, including any property owners association.
STORMWATER FACILITY MAINTENANCE AGREEMENT 4
Rev.05/14//2014
9. Notwithstanding anything to the contrary contained or implied elsewhere
herein, it is expressly agreed and understood that the liabilities, indemnities and
obligations of Copper Creek Partners, L.P. as Landowner hereunder shall
expire and be of no further force or effect upon the transfer ("Transfer") by
Copper Creek Partners, L.P. to the Association of legal title to the Facility
Property, save and except for any liabilities, indemnities and obligations of
Copper Creek Partners, L.P. as Landowner hereunder which have accrued
and are due, payable and/or performable as of the date of the Transfer and
which shall expressly survive the Transfer.
Executed this2�'day of/ ) 20
Landowner City of Fo Worth
Copper Creek Partners, LP
a Texas limited partnership
J es vs -J• C spa
By: TA GP, LLC Assistant City Manager
a Delaware limited liability company,
its General Partner Approved as to Form and Legality
By:_ i
Nam hn D. Hutc inson (�I CAJ"1,711A It 1/1 64-�-
Title: President Assistant City Atto ey
Homeowners Association:
Copper Creek Fort Worth Homeowners'
Association, I c.
Name: .s . ATTEST ..'
Title: Viia P/4s%d--"4 ! ORT
City�P&arr
••,.,0�
U
..�'rEXP
OFFICIAL RECGKD
CITY SECRETARY
STORMWATER FACILITY MAINTENANCE AGREEMENT FT W01119 fir, 7X
Rev.05/141/2014
STATE OF TEXAS §
COUNTY OF TARRANT §
This instrument was acknowledged before me on 2/9-A: S I �V by
�3e'bos 3 CAWp%, Assistant City Manager of the City of Fort Worth, on behalf of the City
of Fort Worth.
LiD#
CHEZ �'
-
;. 9 °-iy Notar256490 No ry Public, State of Texas
f �+" r iDer 19,2021
STATE OF TEX e S §
�
COUNTY OF §
Before me, the undersigned authority on this _� day of
-JQ-A U aw- 20LI, personally appeared
_ � lh)kn known
to me to be the person whose name is subscribed to the foregoing instrument and
acknowledged to me that the same is the act of
and that he executed the same as its
r and as the act of such and for the purposes and
consideration expressed in the foregoing instrument.
MERRILEECARRUTHERS
Notary ID 7 839506 1D
My Commission Expires 77n a
�/,�C-�•; AJg
February 22,2022 db
Notary Public, State of Texas
STATE OF TEXAS §
COUNTY OF Tom' §
This inSt.-ment was acknowledged before me on_ ka-x y 3/�!9 by
,S&yIOW.— iVI, , authorized representative, acting on behalf of the
1�4'ga (,��f��,,�- 1� �Homeowners Association.
Rv P B
MERRILEECARRUTHERS �
Notary ID 4839506
My Commission Expires Notary Public, State of Texas _
February 22,2022
OFFICIAL RECORD
STORMWATER FACILITY MAINTENANCE AGREEMENT CITY SECRETARY
Rev.05/141/2014 FT. WORAP T
Contract Compliance Manager
By signing I acknowledge that I am the person responsible
for the monitoring and administration of this contract, including
ensuring all performa ce and reporting requirements.
Ashraf Ibrahim
Management Analyst II
OFFICIAL RECORD
CITY SECRETARY
FT. WORTH,TX
EXHIBIT "A"
INSERT LEGAL DESCRIPTION
STORMWATER FACILITY MAINTENANCE AGREEMENT 7
Rev.05/14//2014
EXHIBIT "A"
PUBLIC DRAINAGE EASEMENT
STATE OF TEXAS:
COUNTY OF TARRANT'
BEING a tract of land situated in the George Matthews Survey, Abstract No. 1078, City of Fort
Worth Tarrant County, Texas. being a portion of Tract i as described in deed to Copper Creek
Partners, LP, recorded in 0218019672. Official Public Records, Tarrant County, Texas
(OPRTCTj and being more particularly described as follows:
BEGINNING at a 1/2" rebar found in the east line of the G.C. & SF. Railway R-O-W (variable
width right-of-way. G.C. & SF. Railway Company. Volume 44, Page 395 & B.N. & SF.
Railway Company. Volume 12734, Page 680, Deed Records. Tarrant County, Texas), at the
most westerly southwest corner of said Copper Creek Partners Tract i and the northwest corner
of a tract of land as described in deed to the City of Fort Worth. recorded in D211178582,
OPRTCT;
THENCE N 01'09*23" E, a1 the east line of said G.C. & SF. Railway R-O-W and the west
line of said Copper Creek Partners Tract 1. a distance of 758.32 feet to the most westerly
northwest corner of said Copper Creek Partners Tract i and the southwest corner of a remainder
portion of Tract One as described in deed to Copper Creek 232 Holdings, LP. recorded in
D214241317. OPRTCT. from which a 1/2" rebar capped set at the southwest corner of a tract of
land as described in deed to Copper Creek 232 Holdings. LP, recorded in D217165326.
OPRTCT bears N 01'09'23" E, 180.00 feet;
THENCE departing the east line of said G.C. & SF. Railway R-O-W, along the north line of
said Copper Creek Partners Tract i and a south line of said remainder portion of said Copper
Creek 232 Holdings Tract One, as follows:
S 88'50'37" E, a distance of 54.40 feet to the beginning of a tangent curve to the left,
having a radius of 1101.00 feet;
Southeasterly, along said curve, having a central angle of 01'2354". an arc distance of
26.87 feet, and a chord that bears S 89'32'33" E. 26.87 feet to the northeast corner of the
herein described tract of land:
THENCE departing the south line of said remainder portion of said Copper Creek 232 Holdings
Tract One. across said Copper Creek Partners Tract i, as follows:
S 01'49'47' E, a distance of 169.69 feet;
N 82'23'18" E. a distance of 135.21 feet to the beginning of a non-tangent curve to
the left having a radius of 375.00 feet;
Southeasterly. along said curve, having a centralle of 02'41'42". an arc distance
of 17.64 feet. and a chord that bears S 14'4229" 17.64 feet to the end of said
curve.
S 70'01'05" W, non-tangent to said curve, a distance of 138.50 feet:
S 35'19'12' E, a distance of 103.69 feet;
S 19'58'55" E, a distance of 50.01 feet;
S 09'59'46" E, a distance of 50.03 feet;
S 05'26'38" K a distance of 202.35 feet;
S 04'30'31" E, a distance of 84.56 feet;
Gowwuv3 Scale i NONE p� ;s'r'E rF Sheet
��G CEO 7
�- Ba Date 111/14/2018
c��a EMMEM-PLS-� Job No. 1 10591 .� S. �°"
Y..
a'°6 N , spr*W ixs 7b061 Draf ted s T . J . M. 4914 of
T8PU3 RRAA No.IOM1700 X44,6 4w --koQ 4
Checked i J . S . B . P
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EXHIBIT "A"
S 47'3850" E, a distance of 50.39 feet;
S 76'03'23" E, a distance of 115.79 feet;
N 89'36'16" E. a distance of 675.33 feet to a point in a reentrant line of said Copper
Creek Partners Tract i and the west line of a tract of land as described in deed to
Eagle Mountain-Saginaw Independent School District. recorded in D218031854,
OPRTCT:
THENCE S 00'23'44" E, along a reentrant line of said Copper Creek Partners Tract i and the
west line of said Eagle Mountain-Saginaw Independent School District tract, a distance of
10.00 feet to the southwest corner of said Eagle Mountain-Saginaw Independent School
District tract. said point lying in the north line of said City of Fort Worth tract recorded in
D211178582. OPRTCT;
THENCE S 89'3616" W, along the south line of said Copper Creek Partners Tract i and the
north line of said City of Fort Worth tract, a distance of 1008.52 feet to the POINT OF
BEGINNING and containing 127,955 square feet or 2.937 acres of land.
(� �1,�f17�T Scale NONE ��••••• rF Sheet
GOOMMI VAkSr :�, Date = 11/14/2018 *MMHALN 2
CM - s-sus�roas . Job No. = 10591JOa •B" °"
4 4914 �Y.. of
2405 °i"'� 7°°61 Drafted T. J . M. c4"'F7)3016anESS°�', 4
��.SUR�.•*k
�s FM NIM 1000700 Checked = J . S. B . 14
LX
PM
EXHIBIT "B" GRAPHIC SCALE i"=200'
0 200 400
SEE SHEET 4 FOR
LINE & CURVE DATA
X
I I COPPER CREEK 232 (PORTION OF)
HOLDINGS. LP i TRACT ONE
D217165326 26 j HOLDINGS,COPPER LP
I � I 32
OPA.T.C.T. !" 02!4241317
1Y2 A.cs. — r ' /"A.T C.T.
$� ,� I _cs ; .� , ,
C3 S 1-: J CITY A�ir WAS
1�o�3O 1 AISPROXIMATE LOCATION D21MI27 FACILITY. OP .�.T.
d
� TEXAS
�.L.P. 50' ACCESS EASEMENT
20' WIDE PERMANENT D214c39888
t •. RIGHT-OF-WAY AND EASEMENT D214239887 �j
lu) L4 I 0207394265. 0P.RJL.T. AFFECD2180TED
B 1 H
fca;g ca I + OPA.T.C.T. 3K
Z � ( PUBLIC DRAINAGE
OH
m (.0
I127.955 S0. FT. cow Tc�EK
I 2.937 AC. PARTNERS, LP 1
D218019672 I
Q Q : f- APPROXIMATE LOCATION 0 P A J.C.T.
CR06STEX NORTH TEXAS
—.1 GATHERING, LP. VES
20' WIDE PERMANENT Y
I
OD
RIGHT-OF-WAY
A��T
J.C.T. 8 I
Cos COS I dlS ( *6 z PIt�INE�sa�NT A��� ��'
G B� I
ES R
D2142398M
m � ' ` 0 SA4239887 0
(9 L10 I
I EA
-- -- -
I APPROXIMATE LOCATION
�•®•�• TEX NORTH TEXAS (NORTHWEST C014MlNJITY PARK)
(s/2 F. GATHERING, LP. CITY OF FORT WORTH
L2
20' WIDE EASEMENT /32111785132
D209202103. 0 P A.T.C.T. 0 P A.T.0.T.
�-o ��y�� Scale 1 1 "=200 ' ��•••• • 'F Sheet
AUT OOD 70 bl\I P,.•�p S T fgc0 9�
�VifAItSI�At,L,_If Date i 11/14/2018
"
3
se"R'°"JobNo. i 10591 .... • 9s• of
s' a�� 7ea1 14
7) s Draftedi T. J.
TBKS FIRM"°.10021700A
Checked : J. S. B. •suAN� 4
pV
EXHIBIT "B"
LINE DATA
LINE BEARING DISTANCE
Ll S88'50'37"E 54.40'
L2 S01'49'47'E 169.69'
0 N82'23'18"E 135.21'
L41 S70'01'05"W 138.50'
L5 S35'19'12T 103.69'
L6 S19*58'55"E 50.01'
0 S09*59'46"E 50.03'
L8 S05'26'38"W 202.35'
L91 SO4'3031"E 84.56'
L i0 S47'38 50"E 50.39'
L11 S76'03'23"E 115.79'
L12 S00'23'44"E I i0.00'
CURVE DATA
CURVE RADIUS DELTA ARC CHORD BEARING CHORD
C 1 i 101.00' 1'23'54" 26.87' S89'32'33"E 26.87'
C2 375.00' 2'41'42" 17.64' S14'42'29"E 17.64'
GOODWINI Scale NONE ;° � '� Sneei
Dale i 11 14/20 1 B
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XOPEN SPACE/PLIBUC`
M -ISIDPARL46E EASEMENT 4b
N
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INN 14
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11001IIII 111 \:cER 'Sep-MY — —
d
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Storm gin c S ou c S orae u. WSEL
100—YR .i 4 43 701.00
CL 5—YR .55.10 2 145 700.52
Q. i—YR 7W 28.75 77,277 700.00
U
GRAPHIC SCALE i '=100 '
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0 IT 13
0 100. 200 300 SHEET I OF 12
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19 20 21 23N 1FP- �w /FID 702.55 TOP�00 TOl 86 �T ri T00.95 700.60 E5 r
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0 100 200 300
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SHEET 2. OF 12
LOT 4X
w PRIVATE OPEN SPACE 8 ADA RAMP
Z PUBLIC DRAINAGE EASEMENT
J
H TOP 710.0 v
a ------�10, °°
�a
Ir Y a
a TOP = 704.00 p
oQ� � y``S�OpE � �
c
TOP = 702.25
0 WnON A-A
O NTS
N
co
N
co
Lo
LOT 4X TOP = 702.0
o PRIVATE OPEN SPACE a
z PUBLIC DRAINAGE EASEMENT z
lZ J �� J
0 f 1 10'� VARIES 0
a- TOP = 702.0 J
> p 100-YR WSEL:=701.00
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7 SHEET 3 OF 12
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EA"GENCY SPA'_LWAY CAPACITY
0 = CbH
C = 3.0
b = 47 ft
0 prov'd = 116.14 cfs TOP OF 84W
H = 0.88 ft EL = 702,00
7 i ( I
F7100-YR WSEL=701.00 y- O_30 ' LWAY EL = 701.00
III_ - - - -- - -- 0..50' — wEREZ = 700.50
-
4 7' NEP
T�RELAAIDLOK 435
MORCEUNT MAT 0 = CIA"
OR EOU'VALEIVT ALONG ThE SSCT ONC—C C = 3.0
TOP OF TIE SPA.L WA Y 8 WEIR NTS b -= 47 ft
rn 0100 prov'd = 49.85 cfs
o H = 0.50 ft
N V = 2.Ifps
N
O
aD
NrTOP V�M W 10' WADE SPA:LWAY
LO ELEV. 701.oO
100-YR EAERGENCY OVERFLOW WSEL = 701.38 5' WIDE- 4' THICK
CRUSI-ED STONE
3z 100-IR IfSEL - 701,90 — ON FABRIC
Z —
LL-
141 OF.CONCRETE
/ 00 }ELEV. _ WEAR= 697.40
N (SEE SECTION E-E J
W 0.5%A" � 63 L.F. DSL �� 4#11 MAX
cr- -�� BARRELL 30 CL. NORTI,'WEST
R.C.P. L� 0.32% COAIMINTY PARK
I
o0100 prov'd
ti M 67.03 cfs o
u o BOTTOM OF.CONCRETE
o V =6 8 fps �� WEAR= 695.40
U
.:���
#3 BAR ` .: 3 N c 12' DIA. DRY-ROCK RIP
Q. :'r N OVER GEOTEXTILE FLTER.FABRIC
CL
CITE +,'•- U.S. FABRIC WOVEN CLASS I US 230 OR
V!, 9, EOMALENT"PER AASHTO A1288-00 SPF-
' TOP OF RP RAP ELEV= 69 7.00
NTS
o #3 BAR-----, 24'
GREGORY METHOD
Ac
MINIMUM RIP-RAP CALCULATIONS
9'
AI3 BARS 24 c-C Dw(Minimum! 4 /f 1.8 g(W;=Ww.114 w J 1
•S•
a`r #3 BAR Where j
g = 32..2 ft/s=
U Ws= Unit weight of Slone 150lb/fts
I COACRETF WEIR DETAL Ww= Unit weight of water = 62.4lb/fts
O1 NQS Dao(Minimum 1 =x/17.1149
IT 10
o V = 6.8 ft/s
r Dao(Minimum) = 0.63' = 7.56' SHEET 4 OF 12
wl 12' Diameter 6peclfied for Ouffoll
#3 BAR
.3,Ow Ps/--,,
CONCRETE 9,
j-
#3 BAR =4� 24'
9'
#3 BARS C 24 C-C -'
Y #3 BAR
i CONCRETE WEAR DETAIL
5' WADE- 4' TICK NTS
I CRUSTED STONE
N. I ON FUER FABRIC 4.67'to Face of Weir
O
M
TOP OF COAL RETE
CID WEAR= 697.40
't (SEE SECTION B-B)
LO 4+I AIAX
RETAMG WALLEbv.
(HEIGHT VARES) 697.00 NORTHWEST
COASOA6TY PARK
li '�'� GRADE
0
L
�- LOWEST ELEV. AT
N PROPERTY LIRE
> _±696.50
W
BOTTOM OF CONCRETE
HER= 695.40
M GEOTEXTJLE FILTER FABRIC
m U.S. FABRIC WOVEN CLASS/us 236 0V?
v EQU'VALENT PER AASHTO AWOB-00 SPEC
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SHEET 5 OF 12
DETENTION SUMMARY
To mitigate increased runoff due to the development of Copper Creek - Phase 3, which
discharges south.to the Northwest Community Park, a detention pond and weir structure
has been designed in order to release the discharge from the Copper Creek - Phase 3 as
sheet flow /n a manner similar to the pre-developed conditions.
An Existing Conditions drainage area approximately 102.47 acres of the
Capper Creek development flows south to the Northwest Community Park.
The limits of Ms. discharge span from the BNSF Rallroad right-of-way
to the dam/spillway for the existing lake located on the Northwest
p Community Park... The existing conditlons peak 1, 5, and /00 year discharges are
N provided below.
0
r o W/ih.the development of Copper Peer Creek. - Phase 3, the a'rainage area flowing to the
CD Northwest Community Park is reduced to two sub-basins G & J totaling 44.7/ acres.
it
Sub-basin G is conveyed to the proposed detention pond prior to discharging south.,
LO while sub-basin J flows un-detalned to the Northwest Community Park.
c
The proposed detention pond was designed using the Modified Rational Method. The
i required storage volume was de1ermined In order to achieve release rates from the
�- proposed detention pond that when combined with the un-detained discharge from sub-
0 basin J, would result 1h an overall ultimate developed discharge less than or equal to
o existing conditions for the 1, 5, and 100 year frequency events. Storage and detention
W pond caku/ations are provided on Sheol 7 through 10 of Exh/b/i B.
The table below is a comparison chart between the Existing Cond/tlons and Ultimate
I Developed Conditions, demonstrating the development of Copper Creek Phase 3 has no
rh adverse impact on the peak storm water discharge to the Northwest Community Park.
W
U)
0
s
CL
BXMG CONDMONS VS.ULTMTB DBULOM CONDITIONS
SUMMARY CBART
CL SUB-BASIN Q I (Cis } Q5 Ws ) 0100 WsCL
}
U
� Sub-Rosin EX-A 62.10. 96.83 165.39
0
a Detained Sub—basin G 8 Undefained 38.09 69.21 139.75
Y Sub—basin J
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SHEET 6 OF 12
100 -YR MODIFIED RATIONAL METHOD
bi isting.Runoff Coefficient, ai`���i �Oi9;�3�a'�r�3 Proposed Runoff CoOident U4,
reaM}ats'rr7Y9= .rfM'Li Anes Area 4x' ;;3706:"? s+zii' Aaes
ime of ConcetrationMin. Time of Concetration 009022 200" ;°Min.
IYear Runoff 43:66 CFS 3 Year Runoff 6295 CFS
Year Runoff 67:95 CFS Slelir Runoff 93.11 CFS
100 Year Runoff 11614- CFS 100 Yea(Runoff 159,13. CFS
Clovim 43.66:,. .... _ CFS Table 5.15:Tarrant For i Yr Return Period:it=0.8217,b=43.653,d=8
C,5y,= 67:95. CFS Cdunty.Rainfall For S Yr Retum Period:a-08142;b-71.154,d=12
Q•iooyr 1}6:14 Cf5 Data For 100 Yr Return Period:e=0.7790.b=110M,d-14
Tm= 23.96. Min. For 1 Yr-Return Period:a=93:84,b=13A3
We L18 Rainfall
T,= 2&1L. Min. Factors For 5 Yr Return Period:a=170.81,b=19.44
Tom= 32 25.. Min. For 100 Yr Return Period:a:=322:07,.b 1-2439
Pte- .161 in. Pme L77. in.
N ?rm= i 66: : in Ply 2:951. . in.
0, Pholle298` in. p1l6100a 3.46 : In.
U')
CD V„d 26951:22... Cu:Ft V,,,,e 47206.42 Cu.Ft
Vim = 41276 29; Cu.Ft. vm a 73020 79 Cu,k
V op' 7126939.. Cu.Ft Vete 130028:97 Cu.R
C
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LU
YR MODIFIED RATIONAL METHOD
I IN 11.1151 liall I mill;I
09 Run ffident Proposed Atmoll.03dkient CaL
:s
CFS
7,,:
Amu
arco on M A� Mtn- Timea(Coiceti ion
f Runoff 211,71r. CFS I Year Runoff
rve-"I
cloel 201. CFS Tabre 5-15: For lYr Return Period-&-09217.6:31,653,d=8
County mainfill! ors Yr Return Period.e=4111142.b=71.154,d-12
tufa [For 400 Yr Returp Periock a-&7794 b mi mm d.-14
Tloej 3)'.6S Nin, 1 r
able 1,19 Rainfall IV1, Peia-95.84,b-13.43 1:5.1=Iron WPeficid:v=17483,b=19.44
For l00YrRetumPeriud:4w322Mbx24
:,.A —ICLFt v, ,.=l TWT- Ft
OD
tc)
1.5.2 Design Equations
The design of dek"tion uwg the bloilffied,PAIMM Method a presenled as 8 n0n4term"oppivach
out"for spreadsheet cakulmhom(Debo A Flame,MW
C Tlm-fi, ",release rem con bodamwiftcad Raft:
'07
Pdme:
O. = allowable release rote(ds)
LL. C, = puedevelop PidowMemWnjmffoDdlident
0 i x min6R I I ity for the coorespariclino him of conterlimllort(imm
A = mora loan)
The aftW durallcin of stomm.the*w valum to determine rakdall bile".at*+kh the 410fage v*kww is
C%j mannimed,bi
LLJ
To F2CA2b 0.271
T4 crKical swm duration(min)
O. agowable,release rate(cft)
C = devidopold condition Rational Method nuwff coaffident
fn A am(acres)
0
Ab= rainfall lam tom depenclecton location and return period tolitin ham Table 1.18
0-
Ad Thexectumod.sk mg,volunw.In Mk k"can be ciblanud from gm equators below!
4)
40 ICAs-j2CabA0J`"z+(GJ2)Cb-U (1.28m)
V.a Vdw—v,ploolpie (1.26b)
L)
%4ww
L- V,.,= We*mwymLquwed wasp
a)
CL eq-
CLt. m tame of conce""boo,tor go developed condillon("un)
0 Pae = 3-hour(1804nimine),sworn depth(in)
L) Pg - go..depth fw*m 11 durAlion(in)
U) -dialli-imnablesarm 3V defiruidabo,"
The equaftm mbo lndude On we of an n4amitin"fader to On cWuWvd storage vokam to account
for under situp. The faciar(LP2wr.)im the,caft of the 34w".sWm depth for the mkin frequency
dm ded by toe raw"depth For the.cracal dm~calculated as Equation 11.27.
to
4) flisdardw, This spre"alseet tool has beers prqwr*d tui mWm the appliornt rm gimparingciikiiiations,for sRWI altes,In v000rdance oft the Gly of ForWwth Crawriat
144nual Ism section 3A.Lot the NWU WWW.Manamal mprifing AmAllsions on use ofthe Modified RmtkPul MLeth,04 Irlmeapplknotis responsible for emfk*tha&
Awbmftd cakutoduris are cwt&
0.0
to
0 JU 1CD
SHEET 8 OF 12
5 YR MODIFIED RATIONAL METHOD
7-
x;sting Runoff Caefrident03. P taxed Runoff CoefficientA
�j�gm��.
F, '�i,es Aces Arco
es
rorwofConcelratfon
Min. Tmeo(Cmuctrallon
SYear itunuff r SiIA. CFS 5 Year Runbff FS
Table SIS;Tweant I-V Period:e-1.8211,b-13,653;4-8
Ra.
Q.sel WAR S County ::I Yr::Irnn Period!&=0814 1,b=71.154,d=12
Data For
100 Yr Return Pwki&a-0.7798,b•110202,-d-14
Table 1.18 ganT
Factors For 200 Yr Return Period;a-322A7,b-24.39
Peel
CD
CD
V-0L "int 87'
if) 1.5.2 Design Equations
=Xv==moddied Raftww Method is preserved as a nm4jvwwe43pproocA
(flebm&Rsese,21003).
The a4vabft falfives raft can bedeWa*ed 11.1r
O
0. A 11.26)
0.= allmNablermlemserMeids)
.C. = preWreelopmentRatpvMMethodnswnmeRtdnM
0 .1 = rjolvill initawly iwthe m m-I Pi lift of
A =Area(acres)
9L The endcal duration of smM.the time valise to detctehkw tak"Was".at which the swrotte vokvps is
nwitnized,iw.
ffW iWb (lin
whom:
T. - coftall storm clu.mman(vain)
Ih O. = allowable release rate(c(a)
C = oe%Thnb.ed,, 1'6orh Railonallwil"nonall ooeffielerrt
to A = area(sca).
0
a,b w minta fackm dependent an 1xrYdnaid reason panod talken R Table 1,18
The rso-to staraW volume.in cubic led-cambe-oblaeied*am sm.awatims b*w.
Vw_ee,=60 ICA&-jiCibAQj%*+(GA(b_Q] (11-21110)
V..i&'Vrw..y I P*WPo (11.21111b)
Vd-eW-
ltt V,__.--Pam"g-**-aI - (K)
V_ ,* 0 8110-1010011
U a of concentration for the devebped oondwn(mm)
P. x 34mw(114104afnim)sawn depth(in)
P. = storm depth to the aNenl dwmion(in)
all other varvablemorevs defined abuse
The equoearra bum exhole the we of an a4umbnent factor le'tw celowlated stor"m vokmw ID accorsv
The team(P%IiP")la,the fatim of the UwW awm depth lot he stun kmpmwy
dmided by the rahIae depth for the vifical durshon,cakadvied on-Equeamn 127.
0 NOW hoqg The that
en awoftileMod path Md appliantis re
0 EXMrr 1100
r
SHEET 9 OF 12
Pond Report 3
tgiaaea�r blMleeed+A•t ltaesdehr,W 18.2078
Pond No. i -PH 3 POND
Pond Data
Coadaura-Usi d-ed coriav ress,Iawrepe and ra e1M0od 8828 tlrvegma alauMBon.DegYiaq eNaflars e67.201t
Stage f Stomp Tt7ble
stop 00 17evauan(a) contour area(9#4 Inca:Etorwa(coal ibtel storage(cut) DI6dWp ods 1
1.11697M w 0 0 0
N. M,00 10353 6,501 6,501 s-s0
1.80 seam 37;386 28AN 33,321 0.44
28o 700,00 50,',w 43.969 77,]09 .
330 70050 53.120 25,918 103336
3.60 701.00 I15.307N30 31] r
107 1Cit_ri �
�- ':
Culvert f Orfts Structures Weir Structures.
[A] [8] [q [Prwlsd [A] [Bl R [13]
1288 k -30.00 Inedbe Uecare Indo" Creat tan(a) -47AD 1SOA0 0.00 OAC
60en(in) 0.08 0.00 DAO Crest x(a) -700.50 781 Ae. 0:0 0.00
Ifo Borers. .2 0 0 0 wor Lawn -3AO 3.00 333 333
lnvart EL.01( ..697:10 0.00 OAO 0.00 wow yMpe .Broad Broad
L-111%(8) .432 0.00 OAO 0.00 11AU 8twe =No No No 09
slope t%) -0.32 0.00 0.00 rah
O N-v41oa a.013 .013 Ata de
N 00w CodL -0.00 OAD OAD 0,60 UNIAn" =11,000 0 ca+our)
PLOO 9W •na No Ib No 7W Bee(a) -0.00
Mwr.aywane.r4.iwwlyrewew+irrq.rwt6�i`wt ww�.wer�.awe4.s04.�e.a.yee+la
(D
C1'
RWM Stage!Discharge oav(R)
5100 7y.20
4,001 70110
li.
06 3.08 700.20
N
> - --
w - -
� 2.00 1189.10
I -
M _
y 1.00 596.20
O
.L
� 0.00
L
0.0 110.0 180.0 240.0 320.0 400:0 450.0 590.0 640.0 720.: SODA wo
V T".0 0bdurge(ew
L
CL
CL
O
� e1atY QI/eeUOef Ce eYsensMurta4aumereeet pe)�et eaart(oe)mrK 1Nrneefa alydd0#ebb mlQeMiPU sm amayrOnw bi
C
v Stage./Storage!Discharge 7"
IL Stage Storage Devatton CIvA CIV B Coy C PhiRsr Wr A V&2 Wr C We D Em l User Tbtal
a curt it Ck ch cis cis refs aft Cis cis cfs ds ch
0?
4s 6.60 0 697.20 0A0. - -- - 0.00 0.00 - - - 0.00
0.80 8,301. 698.00 6.90.cc - - - 0.00 0.00
1.50 33;121 699.00 19.44 oe - - 0.0 0.00 - - - - 19.44
2.20 77,309 700.00 38.68.0c -- - 0.00 0.00 - - -- - 38.66
y 3.30 103,235 700.56 54.73 oc - - - 0:00 0.00 - - - - 54.73
3.80 13043 701.00 67.03 cc - - - 49.85 0.00 - - - -- 116.88
O
C+ 4.80 188,143 702.00 66.54;cc - - - 259.03 480.00 - - - - 825.58
U
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SHEET 10 .OF 12
LANDSCAPE NOTES
I. THE OWNER SHALL BE RESPONSIBLE FOR THE ESTABLISHMENT, MAINTENANCE,
AND VIGOR OF PLANT MATERIAL IN ACCORDANCE WITH THE DESIGN INTENT AND
AS APPROPRIATE FOR THE SEASON OF THE YEAR.
2. LANDSCAPE AND OPEN AREAS SHALL BE FREE OF TRASH, LITTER, AND WEEDS.
3. NO PLANT MATERIAL SHALL BE ALLOWED TO ENCROACH ON R.0. W. ,
SIDEWALKS, OR EASEMENTS TO THE EXTENT THAT VISION OR ROUTE
OF TRAVEL FOR VEHICULAR, PEDESTRIAN, OR BICYCLE TRAFFIC IS IMPEDED.
4. TREE MAINTENANCE SHALL .BE IN ACCORDANCE WITH THE STANDARDS
OF THE INTERNA TIONAL SOCIETY OF ARBORICUL TORE.
5. TREE STAKING MATERIALS, FUSED, SHALL BE REMOVED AFTER
(/) GROW/NG SEASON, NO MORE THAN (/) YEAR AFTER INSTALLATION
(STEEL TREE STAKES., WIRES, AND HOSES ARE PROHIBITED).
m
0 6. REMOVE TRASH, SEDIMENT, OR DEBRIS FROM POND AREAS. THE
N PONDS ARE DESIGNED TO ACCUMULATE SEDIMENT. REMOVE SEDIMENT
WHEN THE DEPTH REACHES 8 TO IO INCHES. REPAIR DISTURBED AREA
WITH SEED AND STRAW.
N
7. MOW GRASS TO A HEIGHT NO LOWER THAN 4 INCHES IN THE BOTTOM
AND SIDE OF PONDS AND DRAINAGE DITCHES. REMOVE GRASS CLIPPINGS AND
LEAVES.
8. DISPOSE OF ACCUMULATED SEDIMENT, TRASH, AND DEBRIS IN A MANNER
THAT IS PERMITTED BY THE LOCAL, STATE, AND FEDERAL REGULATIONS.
0
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/ SHEET II OF 12
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•RR 101-01
A •: • �' O O�OOO M
— R.C.P. o OOo O
�-� O 000
o .{ .�: �..-=�Y•�_8-,f:a o00^0000
R.C.P. T�'' •� o� P-e
�00 �o
0
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ro `+.I
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PLAN
6' —3.000 pal Concrete
= Heodwdl of 4 iskpo AN concrete aw be Ckus 'A'
0
a 12' :AIRY ROCK RJl'RAP
�L R.C.P.
W18Toewal �l
3PACAG C—C SECTION A A =-I GeohmiAe,Flier Fabric
M U.S. Fabrics Woven Cknss.1 US 230 or
Equ/valent Per AASHTO W88-00 Spec.
c Plpe
rod/us reinforcing may ezlend t bma�rllne
3' aid be fled bent Into rock rrgo
FAAWW- 1
Y
SLOPED END SECTION
Concrete p4m
hTsCLa
SEC7701V B-B
ax
v GREGORY METHOD
MIM/MUM RIP—RAP CALCULATIONS
Dao(Minimum) =FV-/f 1.6 (2g( a.—W„)/W„ 1 J
' Where+
g = 32.2 WeQL
C Wa= Unit weight of stone = 15016/ft"
U %= Unit .weight of water = 62.41b/fts
Dao(Min)mum 1 =4VI1,7.1149
V = 6.8 ft/s
o Dao(Minimum 1 = 0.63' 7.56' EXESIa 13
i 12' Diameter Specified for Oulfall SHEET 12 OF 12
Exhibit "C"
CITY OF FORT WORTH STORMWATER FACILITY
OPERATION AND MAINTENANCE PLAN
The only responsibility the City of Fort Worth has in the operation and
maintenance of this Facility is inspection.
General Maintenance Procedures
The structural and functional integrity of the Facility shall be maintained at all
times by removing and preventing drainage interference, obstructions, blockages,
or other adverse effects into, through, or out of the system.
Periodic silt removal shall occur when standing water conditions occur or the
pond's storage volume is reduced by more than 10%. Silt shall be removed and
the pond/basin returned to original lines and grades shown on the approved
engineering plans. In addition, corrective measures are required any time a basin
does not drain completely within 72 hours of cessation of inflow. NO STANDING
WATER IS ALLOWED in basins designed for dry detention purposes.
Accumulated litter, sediment, and debris shall be removed every 6 months or as
necessary to maintain proper operation of the basin and crushed stone weir
channel. Disposal shall be in accordance with federal, state and local regulations.
Detention facilities shall be mowed monthly between the months of April and
October or anytime vegetation exceeds 12-inches in height.
To prevent debris from entering and clogging the downstream storm sewer
system a wire mesh screen or similar screening device shall be installed over the
outlet until final acceptance.
The crushed stone weir channel shall be inspected monthly for vegetative growth.
Vegetation should be removed when present, and the channel shall be treated
quarterly with a weed or plant deterrent to minimize the potential for vegetative
growth.
4. PREVENTIVE MAINTENANCE/INSPECTION
• Visual inspections of all components will be conducted every 6 months.
• A log shall be kept of maintenance actions, and inspections. The log
should document the condition of the detention system's primary
components, mowing, and silt, litter and debris removal dates. Document
STORMWATER FACILITY MAINTENANCE AGREEMENT 8
Rev.05/14N2014
aeration of the basin bottoms and replanting to prevent the sealing of the
basin bottom.
• Written maintenance and repair records shall be maintained by the
party or parties signing the attached Agreement and shall be provided
to the City upon request.
STORMWATER FACILITY MAINTENANCE AGREEMENT 9
Rev.05/14//2014
Exhibit "D"
Stormwater Structural Maintenance CHECKLIST
FREQUENT REPAIRS REPAIRS
INSPECTION DATE REQUIRED MADE NOTES
Mowing
Remove Trash and
debris
Inspect irrigation
system operation
Remove grass
clippings
Violations Noted
MINOR
INSPECTION
Condition of Pond
Amount of silt in
and
Amount of silt in
flume
Amount of ponded
water
Amount of wetland
vegetation
Location of Erosion
Percent of
vegetation
Condition of trash
guard
Location of Erosion
MAJOR
INSPECTIONS
Condition of
Spillway
Type of Stormwater
Quality Structure
Structure type and
Condition
Condition of Rip-
Rap
STORMWATER FACILITY MAINTENANCE AGREEMENT 10
Rev.05/14//2014
Condition of
filtrations stem
Berm or
Embankment
Settlement
Location of erosion
Evidence of
Animals
Evidence of Aquatic
life
Condition of
Aeration
Foundation
Condition of
Crushed Stone
Channel
Condition of
Concrete Weir
STORMWATER FACILITY MAINTENANCE AGREEMENT 11
Rev.05114112014
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