HomeMy WebLinkAboutContract 51942 CITY SECRETARY
CONTRACT NO._ �) L Q
DOE #
STORMWATER FACILITY
F�g2o2� MAINTENANCE AGREEMENT
c\\N
G0 S�CR�
THIS AGREEMENT, made and entered into this day of FarURN ao ,
ao I q _, by and between Impression Coventry East, LLC, acting by and through Bruce
Heikkinen, hereinafter referred to as "Landowner", 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 0.804 acre tract located in the William Stone Survey, Abstract 1400,
Tarrant County, Texas according to the deed recorded CC#D218066662, Official Public
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 Coventry East Townhomes
hereinafter called the "Plan", which is expressly made a part hereof, as approved or to be
approved by the City and the Landowner provides for management of Stormwater within
the confines of the Property; and
WHEREAS, the City and the Landowner, 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
("Facility") as shown on the Plan be constructed and adequately main ained by the
OFFICIAL RECORD
CITY SECRETARY
STORMWATER FACILITY MAINTENANCE AGREEMENT �� VYORl�I"��
Rev.11/17/2016
Landowner, its successors and assigns,the location and dimensions of which is shown and
more particularly described by metes and bounds in the attached Exhibit "A" ("Facility
Property"); and
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, 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, 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 Facility, berms, outlet structure, pond areas, access roads, etc.
Components of the Facility, which need maintenance or replacement to
perform their design function, shall be noted in the inspection report along with
the corrective actions to be taken.
3. The Landowner, 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
STORMWATER FACILITY MAINTENANCE AGREEMENT 2
Rev.11/17/2016
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, 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, 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. 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.
6. This Agreement imposes no liability of any kind whatsoever on the City. THE
LANDOWNER AGREES TO HOLD THE CITY HARMLESS FROM
ANY LIABILITY IN THE EVENT THE FACILITY FAILS TO
OPERATE PROPERLY. LANDOWNER COVENANT AND AGREE
AND DOES HEREBY INDEMNIFY, HOLD HARMLESS AND DEFEND
STORMWATER FACILITY MAINTENANCE AGREEMENT 3
Rev.11/17/2016
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
ABOVE 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
TO PERFORM ANY OTHER DUTIES OR OBLIGATIONS
HEREUNDER.
7. Landowner 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 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.
[SIGNATURE PAGE FOLLOWS]
STORMWATER FACILITY MAINTENANCE AGREEMENT 4
Rev.11/17/2016
— "-yExecuted this day of 0
Landowner City of Fort Worth
Impression Coventry East, LLC
N ruse Heikkinen Jesus J. Chapa
/�(� Assistant City Manager
Tittle: �' " `cun�-
Approved as to Form and Legality
hidA
ssistant City Atto ey
"
ATTEST
Al
ity Secre
`*d
•SAS
OFFICIAL RECORD
CITY SECRETARY
FT. WORTH, TX
STORMWATER FACILITY MAINTENANCE AGREEMENT 5Rev.11/17/2016
STATE OF TEXAS §
COUNTY OF TARRANT §
This instrument was acknowledged before me on .D by
Jesus J. Chapa, Assistant City Manager of the City of Fort Worth, on b alf of the City of
Fort Worth.
r
MARIA S.SANCHEZ
*: *= My Notary ID#2256490
N. . = Notar Public, State of Texas
Expires December 19,2021
STATE OF TEXAS §
COUNTY OF TARRANT §
Before me, the undersigned a t rity on this I day of
ar un0201 ,—1 personally appeared
, 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
and as the act of such and for t- urposes and
consideration expressed in the foregoing inst
HOLLY S.ARESTiDfS �
�k+sNotary Public,State of Texes
Comm.Expires 04-12-2020 o ary Publ State of Texas
Notory ID 124891625
OFFICIAL RECORD
CITY SECRETARY
STORMWATER FACILITY MAINTENANCE AGREEMENT FT. WORTH,Ix
Rev.11/17/2016
Contract Compliance Manager
By signing I acknowledge that I am the person responsible
for the monitoring and administration of this contract, including
ensuring all performance and reporting requirements.
Ashraf Ibrahim
Management Analyst 11
OFFICIAL RECORD
CITY SECRETARY
FT WORTH,TX
EXHIBIT "A"
INSERT LEGAL DESCRIPTION
STORMWATER FACILITY MAINTENANCE AGREEMENT 7
Rev.11/17/2016
EXHIBIT "A"
DRAINAGE EASEMENT
METES &BOUNDS DESCRIPTION
BEING A 0.804 ACRE TRACT OF LAND LOCATED IN THE WILLIAM STONE SURVEY,
ABSTRACT NO. 1400, CITY OF FORT WORTH, TARRANT COUNTY, TEXAS, AND
BEING LOCATED IN A CALLED 5.7 ACRE TRACT OF LAND AS DESCRIBED IN THE
SPECIAL WARRANTY DEED TO IMPRESSION COVENTRY EAST, LLC, FILED FOR
RECORD IN COUNTY CLERK'S INSTRUMENT NO. (CC#) D218066662, OFFICIAL
PUBLIC RECORDS, TARRANT COUNTY, TEXAS (OPRTCT), SAID 0.804 ACRE TRACT
OF LAND BEING MORE PARTICULARLY DESCRIBED BY METES AND BOUNDS AS
FOLLOWS:
COMMENCING AT A 5/8 INCH CAPPED IRON ROD STAMPED "MMA 817-469-1671"
SET AT THE SOUTHWEST CORNER OF THE SAID CALLED 5.7 ACRE TRACT OF
LAND, BEING COMMON WITH THE NORTHWEST CORNER OF LOT 1, BLOCK A,
WORTHINGTON POINT APARTMENTS, AN ADDITION TO THE CITY OF FORT
WORTH, TARRANT COUNTY, TEXAS, ACCORDING TO THE PLAT RECORDED IN
CABINET A, SLIDE 10332, PLAT RECORDS, TARRANT COUNTY, TEXAS (PRTCT),
BEING ON THE EAST LINE OF HEMPHILL STREET, A 120 FOOT PUBLIC RIGHT-OF-
WAY,FROM WHICH A 5/8 INCH IRON ROD FOUND AT THE SOUTHWEST CORNER OF
LOT 7, BLOCK T, COVENTRY EAST, AN ADDITION TO THE CITY OF FORT WORTH,
TARRANT COUNTY, TEXAS, ACCORDING TO THE PLAT RECORDED IN CABINET A,
SLIDE 11400, PRTCT, BEING COMMON WITH THE NORTHWEST CORNER OF THE
SAID CALLED 5.7 ACRE TRACT OF LAND, BEARS NORTH 00 DEGREES 02 MINUTES
29 SECONDS WEST, A DISTANCE OF 205.36 FEET, SAID COMMENCING POINT
HAVING A NAD83 — TEXAS COORDINATE SYSTEM POSITION (GRID) OF N:6895997.8
E:2329359.6 (BEARINGS & COORDINATE VALUES NOTED HEREON ARE IN
REFERENCE TO THE NAD83 - TEXAS COORDINATE SYSTEM - NORTH CENTRAL
ZONE, 4202, BASED ON GPS OBSERVATIONS UTILIZING THE LEICA GPS
REFERENCE NETWORK). ALL DISTANCES NOTED HEREON WERE ADJUSTED TO
SURFACE USING A COMBINED SCALE FACTOR OF 1.00012427812, BASE POINT OF
0,0,0;
THENCE NORTH 89 DEGREES 54 MINUTES 57 SECONDS EAST, WITH THE NORTH
LINE OF LOT 1, BLOCK A, WORTHINGTON POINT APARTMENTS, BEING COMMON
WITH THE SOUTH LINE OF THE SAID CALLED 5.7 ACRE TRACT OF LAND, A
DISTANCE OF 259.97 FEET, TO THE POINT OF BEGINNING, SAID BEGINNING POINT
HAVING A NAD83 — TEXAS COORDINATE SYSTEM POSITION (GRID) OF N:6994118.6
E:2304663.2;
THENCE DEPARTING THE NORTH LINE OF SAID LOT 1, BLOCK A, AND OVER AND
ACROSS THE SAID CALLED 5.7 ACRE TRACT OF LAND, THE FOLLOWING CALLS:
NORTH 00 DEGREES 05 MINUTES 03 SECONDS WEST, A DISTANCE OF 3.20
FEET, TO A POINT FOR CORNER, BEING AT THE BEGINNING OF A NON-
TANGENT CURVE TO THE LEFT,HAVING A RADIUS OF 516.00 FEET;
Page 1 of 3
ALONG SAID CURVE TO THE LEFT, THROUGH A CENTRAL ANGLE OF 17
DEGREES 06 MINUTES 36 SECONDS, AN ARC LENGTH OF 154.09 FEET, AND
HAVING A LONG CHORD WHICH BEARS NORTH 81 DEGREES 21 MINUTES 23
SECONDS EAST, A CHORD LENGTH OF 153.52 FEET, TO A POINT FOR
CORNER;
NORTH 72 DEGREES 53 MINUTES 08 SECONDS EAST, A DISTANCE OF 385.78
FEET,TO A POINT FOR CORNER;
NORTH 08 DEGREES 44 MINUTES 01 SECONDS WEST, A DISTANCE OF 154.63
FEET, TO A POINT FOR CORNER;
NORTH 81 DEGREES 15 MINUTES 59 SECONDS EAST, A DISTANCE OF 5.00
FEET, TO A POINT FOR CORNER, BEING ON THE EAST LINE OF THE SAID
CALLED 5.7 ACRE TRACT OF LAND, BEING COMMON WITH THE WEST LINE
OF UNION PACIFIC RAILROAD COMPANY (FORMERLY M.K.&T. RAILROAD),
A 100-FOOT PRIVATE RIGHT-OF-WAY, FROM WHICH A 5/8 INCH CAPPED
IRON ROD STAMPED "CARTER & BURGESS" FOUND FOR THE SOUTHEAST
CORNER OF LOT 29X, OF AFOREMENTIONED BLOCK T, BEARS NORTH 08
DEGREES 44 MINUTES 01 SECONDS WEST,A DISTANCE OF 141.25 FEET;
THENCE SOUTH 08 DEGREES 44 MINUTES 01 SECONDS EAST, WITH THE SAID
COMMON LINE, A DISTANCE OF 296.03 FEET, TO A POINT FOR THE SOUTHEAST
CORNER OF THE SAID CALLED 5.7 ACRE TRACT OF LAND, BEING COMMON WITH
THE NORTHEAST CORNER OF AFOREMENTIONED LOT 1,BLOCK A;
THENCE SOUTH 89 DEGREES 54 MINUTES 57 SECONDS WEST, WITH THE SOUTH
LINE OF THE SAID CALLED 5.7 ACRE TRACT OF LAND, BEING COMMON WITH THE
NORTH LINE OF SAID LOT 1,BLOCK A ,A DISTANCE OF 546.88 FEET, TO THE POINT
OF BEGINNING, AND CONTAINING 0.804 ACRES (35,027 SQUARE FEET) OF LAND,
MORE OR LESS.
SEE ACCOMPANYING EXHIBIT"A"DATED OCTOBER 25,2018 (PAGE 3 OF 3)
�E OF.TF�
.�P.•'' \ST
x172
JO A D. WARGO OCTOBER 25 2018 .JOSHUA D. WARGO
GISTERED PROFESSIONAL 6391
LAND SURVEYOR 6391 l9AROFEss\o�'P�Q-
STATE OF TEXAS tip SURv�
Page 2 of 3
EXHIBIT A i 5�6• a
DRAINAGE EASEMENT cu
. O - 1
LOCATED IN THE WILLIAM STONE SURVEY, ABSTRACT NO. 1400, —�29X
e• t
IN THE CITY OF FORT WORTH, TARRANT COUNTY, TEXAS
- Z
COVENTRY EAST -- - 1
CAB. A. SLIDE 11400 p
wo
PRTCT-/ n o�
29�- gglo .1 g b x
L2 1 �b
• ��`�
0o n
CALLED 5.7 ACRES ;t►
5/8" IMPRESSION COVENTRY EAST, LLC FUTURE
IRF CC# D218066662(01 COVENTRY EAST
OPRTCT TOWNHOMES tT1
o
3I DRAINAGE EASEMENT 5
y Nl 0.804 ACRES „ E 3g5•�891
I& (35,027 SQ. FT.)
Qf 5508 w
oN �2.
w 21
N 89'5457" E
'259.97' C1
S 89 5457" W 546.88'
00CL NA (GRID) LOT 1, BLOCK A
5/8• CIRS N:6895998.1
NAD83 (GRID) 1 E:2329619.6 WVRTHINGTM POINT APARTMENTS 1
N:6895997.8 CAB. A. SLIDE 10332 1
c PRTCT
E:2329359.6
W CURVE TABLE
01
0.0
CURVE RADIUS ARC LENGTH DELTA ANGLE CHORD BEARING CHORD LENGTH
0
Cl 516.00' 154.09' 17' 06' 36" N 81 21'23 E 153.52'
0
LEGENDfABBREVIATIONS
CIRF CAPPED IRON ROD FOUND LINE TABLE
o PRTCT PLAT RECORDS,
TARRANT COUNTY, TEXAS LINE BEARING DISTANCE
N OPRTCT OFFICIAL PUBLIC RECORDS,
Q TARRANT COUNTY, TEXAS L1 N 00 05'03" W 3.20'
POC POINT OF COMMENCING
POB POINT OF BEGINNING L2 N 81'15'59" E 5.00'
CC# COUNTY CLERKS
INSTRUMENT NUMBER
CAB CABINET
IRF IRON ROD FOUND
mma
v PSE
OF.rF
0
CJ
�.:�(C. lc�•.� civil engineering surveying tandscape architecture planning
lbpe regislmtion number. f — 2759
.:...................•• ••• tbpls reg'atration/ricense number. 10088000
10
JOSHUA D. WARGO
................................ 5 1 9 e a s t b o r d e r
6391 JO UA WARGO OCTOBER 25, 2018 arltngton , texas 7sot0
N •' oGISTERED PROFESSIONAL
< • '�.pESS\ONP.Qt' LAND SURVEYOR NO. 6391 8 1 — 469 - 16711
a q�� .........��p STATE OF TEXAS fax : 817 - 274 - 8757
OSURv www. mmotaxos.cam
DATE: LO-25-18 SCALE: 1"a 700' DRAWN BY: .ANS CHECKED BY: -VN' JOB. NO.: 2879-05-01 PAGE 3 OF 3
EXHIBIT "B"
DESIGN PLANS AND SPECIFICATIONS
STORM WATER FACILITY MAINTENANCE AGREEMENT
Rev.7/2006
60 0 30 60 120
1 inch = 60 ft.
20 \
\ T 1+00.00 — P�O
CONST. 4X2' SETS—PD LF OF '
1" 4.1 SLOPED END HDWL 1' CURB
16 INSTALL 12" DIA.
ROCK R/PRAP (18" THICK)
STA 1+00.00 SD—B OVER FILTER FABRIC
CONST. 21" SETP—PD /
4.1 SLOPED END HD WL
INSTALL 12" DIA.
10 ROCK R/PRAP (18" THICK) A
OVER FILTER FABRIC
/
PP
/ FAeF
4
10' ACCESS MAX R V—NOTCH /R CONCRETE BOX P P >
GRA VEL LEVEL
STA 1+
LOT 1, BLOCK A 4X4' DETEN71ON POND SPREADER
WORTHINGTON POINT OUTLET STRUCTURE STA 1+00.oo sD—c
APARTMENTS INSTALL 9" DIA. CONNECT TO EXIS71NG
CAB. A, SLIDE 10332 ROCK R/PRAP (18" THICK) 3'X3' DROP INLET
PRTCT OVER F10ER FABRIC
ROW ROW
12' ALLEY 100 YEAR 10'
WSE = 724.22 BERM
FINISH
ED ��' BOTTOM OF VC
GRADE
I I POND 1
1 I 1.01 1.0°J, MATH EX. 1
GROUND I
TYPICAL POND SECTION A-A
N TS
DA TE: 12/14/2018 C O VENTR Y m m a
PROJECT #: 2879-05-01 EAST am ��wia.m .aaa ..v�+v
2759
DRA WN BY. V. ARRUDA TO WNHOMES t w s�stnO A number f. 008
a latration iceix number. 10088000
519 a a a t border
CHECKED BY.• A. TAYLOREXHIBIT B ar'In9tan, texas 76010
817-469-1671
SHEET 1 OF 6 tax: 817-274-8757
SHEET NO: 1 OF 6 rwr.mmatexaa.aam
OVERFLOW 725 27 725.27 OVERFLOW
ELEVA TION=724.91 ELEVA TION=724.91
725.27 1.0' 3' 3' 725.27
P
ii ? e
724
. �. . FL=72t.
FINISHED FINISHED
GRADE Q=CLH 1.5 GRADE
48.2=(2.7)(50)H"5
H=0.50
EMERGENCY SPILLWAY
SECTION B—B
BROAD CRESTED WEIR
N TS
TOP OF CULVERT = 725.42 .5' 5.0' S'
PROP. BERM 4.12' PROP. BERM
=
TOP = 725.27 0.92' TOP 725.27
i
I
WSEtoo=724.22
1 .
WSE5=723.24 _.
WSEi=722.70
—60•
2.5' BOTTOM OF
REFER TO STRUCTURAL CULVERT/FLOW
DETAILS FOR WEIR PLATE LINE = 721.10
0.58'
Qtoo=29.6 Cfs
VouTFALL=2.16 fps
d=1.04'
V—NOTCH WEIR SECTION C—C
N. T.S.
DA TE: 12/14/2018
COVENTRY � t'Yl YYl a
PROJECT # 2879-05-01 EAST
aMarpYwiip rM+w kwftc ti••prrrirq
TO V. WNHOMEer S tbpa registration^ambf-2759
Y.
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519 a a a t border
CHECKED BY. A. TAYLOREXHIBIT B ar11ngton. texas 76010
817-469-1671
SHEET 2 OF 6 fax: 817-274-8757
SHEET NO: 2 OF 6 •ww.mmataxa8.com
735 735
SCALE
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CONST 5 DD
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....................._.........i....... ..... . ........-...S�.......... ........... .. .......................................................... ................
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PRECAST CONCRETE BOX SECTION D—D
100 YR
WSE 0.5, 4.5' CURLEX
RECYCLEX
OR
APPROVED
Q=CLH'-5 EQUAL
29.6=2.7(110)H'-5
H=0.21 ft 18"
H=2.52 inches
6" GRA VEL
GRAVEL LEVEL SPREADER
N. T.S.
DA TE. 1211412018
PROJECT 2879-05-01 C0 V-EIV TR Y MIM Coll
-EAST *A
thpa registration number. f—2759
DRAWN BY.• V. ARRUDA TO WIVI—IOM-ES tbpls re
number. 100B6aoo
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CHECKED BY.• A. TAYLORarlington, texas 76010
EXHIBIT B 8 1 7—4 6 9—1 6 7 1
SHEET 3 OF 6 f a x: 8 17—2 7 4—8 7 5 7
SHEET NO: 3 OF 6 v w w.m m a t e X a a.C a m
F
TOP OF BERM =725.27 4
3'
°
°
WS1oo=724.22
WS5=723.24
'i
" WSI=722.70
i'a 1
e '
d'
TRASH RACK
9" ORIFICE
FL=721.41 F
SD—C OUTLET STRUCTURE FACE SECTION E—E
N TS
CONSTRUCT 4' x 4' RISER 4' TOP OF BERM
(MODIFIED STD. DROP INLET) k; ;y: .:y 725.27 725.27
P
WSioo=724.2
WS5=723.24
WSI=722.70 9" ORIFICE
TRASH RA
FL 721.41
Y // 12
"", PROP. 21" RCP
2.0 4.209
a
Q1oo=3.57 cfs
FL=719.66 QcAP=32.51 cfs
Vino=1.48 fps
SECTION F—F s=4.20%
NTS SFioo=0.05 cfs
DATE: 1211412018 .. m ma
COVENTRY
PROJECT #: 2879-05-01 EAST
aM w+linv wa.a.p•ndrraen awr+o
759
DRAWN BY. V. ARRUDA TO WNHOMES U09 registration numbs f. 208
a r IaVatian iceix numbs 10088000
519 a a a t b a r d e r
CHECKED BY: A. TAYLOREXHIBIT B arlington, texas 76010
817-469-1671
SHEET 4 OF 6 faa: 817-274-8757
SHEET NO: 4 OF 6 rr r.m m a t e a a a.a am
SCALE
.............. ............... - ... ..............
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.......... .............. ............
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SECONDARY OUTFALL SD—C
DA TE. 1211412018
C 0 VEIV TR Y IM!a
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DRAWN BY.• V. ARRUDA TO WIV-HOM-ES tbpls registrationAlcense number. 1008M
5 1 9 east border
CHECKED B Y.• A. TA YL ORarlington, texas 76010
EXHIBIT B 8 1 7-4 6 9-1 6 71
a,: 117-274-1757
SHEET NO. 5 OF 6 SHEET 5 OF 6 lax:w w.m m a t a x a 3 c a m
ExistingConditions HMS Input Data PROPOSED POND HMS RESULTS SUMMARY TABLE
AreaArea Ex.lmpervious Lag Time Storm Event Peak Inflow Peak Outflow Peak Storage Peak Elevation
Basin (Sq.Mi.) (acres) CN Ratio (min) (cfs) (cfs) (acre-ft) (ft)
X1 0.007484 4.79 77 Oa/o 8.8 1-yr 17 7.4 0.27 722.70
X2-5 0.002984 1.91 78 21% 7.7 5-yr 25.8 13.1 0.45 723.24
X6-8 0.001891 1.21 75 0% 9.91 100 r 48.2 29.6 0.82 724.22
Total 0.012359 7.91
Proposed Pond Elevation-Area Table
Proposed Conditions HMS Input Data Elevation Area Area Inc.Vol. Cum.Vol.
Area Area Pr.Impervious Lag Time (ft) (sf) (acres) (acre-ft) (acre-ft)
Basin (Sq.Mi.) (acres) I CN Ratio (min) 721.07 11.58 0.0003 0 0
A-1,X3-4 0.009719 6.220 78 65% 7.9 721.5 3,985.31 0.0915 0.020 0.020
F 0.000141 0.090 74 0'/a 3.7 722 9,442.78 0.2168 0.077 0.097
G1,X5 0.000672 0.430 74 57% 5.8 723 14,192.01 0.3258 0.271 0.368
X6-8 0.001828 1.17 75 0/a 9.9 7241 17,077.731 0.39211 0.359 0.727
Total 0.012359 7.910 7251 20,095.481 0.%001 0.476 1.203
60.93 Degree V-Notch weir structure Elevation-Discharge Rating Tablf Flow Diversion Table for 9"
Discharge(cfs) Orifice Pond Outfall
Elevation V-Notch 9" Weir-Orifice Emergency Dischar a cfs
ftWeir Orifice Combined Weir Elevation
721.07 0 0 0 0 (ft) Inflow Diversion
721.27 0.03 0 0.03 0 721.07 0.00 0.00
721.47 0.15 0.34 0.48 0 721.27 0.03 0.00
721.67 0.41 1.01 1.42 0 721.47 0.48 0.34
721.87 0.84 1.39 2.23 0 721.67 1.42 1.01
722.07 1.47 1.68 3.15 0 721.87 2.23 1.39
722.27 2.32 1.93 4.25 0 722.07 3.15 1.68
722.47 3.41 2.15 5.56 0 722.27 4.25 1.93
722.67 4.76 2.35 7.12 0 722.47 5.56 2.15
722.87 6.39 2.54 8.93 0 722.67 7.12 2.35
723.07 8.32 2.71 11.03 0 722.87 8.93 2.54
723.27 10.56 2.87 13.43 0 723.07 11.03 2.71
723.47 13.12 3.03 16.15 0 723.27 13.43 2.87
723.67 16.03 3.17 19.20 0 723.471 16.15 3.03
723.87 19.29 3.311 22.60 0 723.67 19.20 3.17
724.07 22.92 3.44 26.37 0 723.87 22.60 3.31
724.27 26.94 3.57 30.51 0 724.07 26.37 3.44
724.47 31.35 3.70 35.04 7.73 724.27 30.51 3.57
724.67 36.16 3.82 39.98 21.86 724.47 35.04 3.70
724.87 41.39 3.93 45.33 40.16 724.67 39.98 3.82
725 45.03 4.01 49.031 53.89 724.871 45.331 3.93
725 49.03 4.01
POND DESIGN CALCULATIONS
DATE: 12/14/2018
CO VENTR Y _ .__ I'YI�m a
PROJECT # 2879-05-01 EAST F
aM srr�nwrYq sunsyrq tar�awap.w+t.�..yrrrrp
TO WIVHOMES "e registratlon lc numbs f. 2759
DRAWN BY. V. ARRUDA tbps regislratim/lioeise number. 10068000
519 east border
CHECKED BY.• A. TAYLOREXHIBIT B ar"n9tan, texas 76010
817-469-1671
SHE'E'T 6 OF 6 fax: 817-274-8757
SHEET NO: 6 OF 6 ■wr.mmatexas.cam
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. 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.
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
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
Rev. 11/17/2016
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
pond
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
Stormwater Quality
Structure
Type of Stormwater
Quality Structure
Structure type and
Condition
Condition of Rip-
Rap
STORMWATER FACILITY MAINTENANCE AGREEMENT 9
Rev.11/17/2016
Condition of
filtration system
Berm or
Embankment
Settlement
Location of erosion
Evidence of
Animals
Evidence of Aquatic
life
Condition of
Aeration
Foundation
STORMWATER FACILITY MAINTENANCE AGREEMENT 10
Rev.11/17/2016