HomeMy WebLinkAboutContract 52845 CITY SECRETARY
CONTRACT NO. Sa_Sg5
DOE #
F',�CC/V
SEP 2
�d
crrroFr 2019 STORMWATER FACILITY
crrys'°R��1oyry MAINTENANCE AGREEMENT
THIS AGREEMENT, made and entered into this day of <1 ,
by and between D.R. , Horton—Texas, Ltd., a Texas Limited Partnership, acting
by and through D.R. Horton — Texas, Ltd., a Texas Limited Partnership, hereinafter
referred to as "Landowner", the Homeowners Association of Twin Mill Farms, 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 34.256 acre tract located in the B. Thomas Survey, Abstract 1497, Tarrant
County, Texas according to the deed recorded in D216260272, 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 Twin Mills Phase 4 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
OFFICIAL RECORD
CITY SECRETARY
FT. WORTH,''X
STORMWATER FACILITY MAINTENANCE AGREEMENT 1
Rev.11/17/2016
WHEREAS, the City requires that on-site Stormwater Management Facilities
("Facility") as shown on the Plan be constructed and adequately maintained by the
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,
sTORMWATER FACILITY MAINTENANCE AGREEMENT 2
Rev.11/17/2016
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 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
STORMWATER FACILITY MAINTENANCE AGREEMENT 3
Rev.11/17/2016
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 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
STORMWATER FACILITY MAINTENANCE AGREEMENT 4
Rev.11/17/2016
on the Landowner, its administrators, executors, assigns, heirs and any other
successors in interests, including any property owners association.
9. Notwithstanding anything to the contrary contained or implied elsewhere
herein, it is expressly agreed and understood that the liabilities, indemnities and
obligations of D.R. Horton — Texas, Ltd., a Texas Limited Partnership as
Landowner hereunder shall expire and be of no further force or effect upon the
transfer ("Transfer") by D.R. Horton - Texas, Ltd., a Texas Limited
Partnership to the Association of legal title to the Facility Property, save and
except for any liabilities, indemnities and obligations of D.R. Horton — Texas,
Ltd., a Texas Limited Partnership 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 this kky oes6�I
20a
Landowner C�
D. R. Horton-Texas, Ltd. City of Fort Worth
y: Benjamin M. dark,
Assistant Vice President of Assistant City Manager
D. R. Horton, Inc
Approved as to Form and Legality
Association
Homeowners Association of Twin Mill
Farms, Inc., a Texas property owners Assistant C ttorney
asso ' n
Q� FOf�T
ATTEST AJ.,
enjamin M. Clark �;' °C
Authorized Representative pursuant to
assignment recorded as Doc.No.
D216257713, Tarrant County Records
City Secr&4
STORMWATER FACILITY MAINTENANCE AGREEMENT OFFICIPEL RECORD
Rev.11/17/2016
CITY SECRETARY
FT. WORTH,TX
STATE OF TEXAS §
COUNTY OF TARRANT §
�Kl l
This instrument was acknowledged before me on by
Assistant City Manager of the City of o orth, on behalf o the City
of Fort Worth.
,Y?Y•P`_ B -- MAF;IAS,SANCHEZ
My Notary ID 7.256490 _
•:
Expires December 19,2021 Not ry Public, State of Texas
F OF S
STATE OF TEXAS §
COUNTY OF TARRANT §
This instrument was acknowledged before me on 1�I'►'119Ze— 2019
by Benjamin M. Clark, Assistant Vice President of D R Horton, Inc., a Delaware
corporation, acting on behalf of said corporation in its capacity as authorized agent for D.
R. Horton - Texas, Ltd., a Texas limited partnership, acting on behalf of the limited
partnership.
wpplf SHERRI A TAYLOR
Notary ID # 5212156
My Commission Expires Notary Public, State of Te s
11 OF June 1,2020
OF
STATE OF TEXAS §
COUNTY OF TARRANT §
This instrument was acknowledged before me oilJ r 1,30 2019
by Benjamin M. Clark, authorized representative, acting on behalf of Homeowners
Association of Twin Mill Farms, Inc.
Mr SHERRI A TAYLOR
Notary ID #5212156 Notary Public, State of Tex
My Commission Expires
s, 5 June 1, 2 '20„t OF
OFFICIAL RECORD
STORMWATER FACILITY MAINTENANCE AGREEMENT CIS SECgETARX
Rev.11/17/2016 FT. WORTH TX
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 d reporting requirements.
Ashraf Ibrahim
Management Analyst II
OFFICIAL RECORD
CITY SECRETARY
FT WORTH,TX
EXHIBIT"A"
LEGAL DESCRIPTION FOR
PUBLIC DRAINAGE EASEMENT
All that certain lot, tract, or parcel of land, situated in a portion of the Benjamin Thomas Survey,
Abstract No. 1497, City of Fort Worth, Tarrant County, Texas and being part of that certain
called 60.993 acre tract of land described in a deed to D. R. Horton - Texas, Ltd recorded in
Instrument No. D216260272 of the Deed Records of Tarrant County, Texas(DRTCT), and being
more completely described as follows,to-wit:
COMMENCING at a 1/2" capped iron rod found stamped"MOAK" for the most easterly
Southeast corner of said 60.993 acre tract, in the West right-of-way line of Old Decatur Road,
and being the Northeast corner of Twin Mills Addition recorded in Cabinet A, Slide 9923 of the
Plat Records of Tarrant County, Texas (PRTCT), from which a 1/2" capped iron rod found
"illegible" for the most northerly northeast corner of Lot 12, Block 29 as shown in said Twin
Mills Addition bears North 86 deg.47 min. 03 sec. West—434.35 feet;
THENCE North 46 deg. 47 min. 14 sec. West departing said West right-of-way line, a distance
of 94.51 feet to the TRUE POINT OF BEGINNING;
THENCE South 78 deg. 37 min. 59 sec. West, a distance of 85.16 feet;
THENCE North 15 deg. 54 min. 17 sec. West, a distance of 78.43 feet;
THENCE North 41 deg. 36 min. 08 sec. West, a distance of 221.39 feet;
THENCE North 34 deg. 22 min. 42 sec. West, a distance of 46.46 feet;
THENCE North 00 deg. 33 min. 41 sec. West, a distance of 47.04 feet;
THENCE North 89 deg. 26 min. 19 sec. East, a distance of 5.82 feet to a Point of Curvature of a
circular curve to the right, having a radius of 20.00 feet, a central angle of 73 deg. 23 min. 54
sec., and being subtended by a chord which bears South 53 deg. 51 min. 44 sec. East- 23.90 feet;
THENCE in a southeasterly direction along said curve to the right, a distance of 25.62 feet to a
Point of Curvature of a reverse circular curve to the left, having a radius of 50.00 feet, a central
angle of 198 deg. 09 min. 15 sec., and being subtended by a chord which bears North 63 deg. 45
min. 36 sec. East- 98.75 feet;
THENCE in a northeasterly direction along said curve to the left, a distance of 172.92 feet;
THENCE North 71 deg. 38 min. 52 sec. East non-tangent to said curve, a distance of 49.78 feet;
Page 1 of 3
E:\10715-Twin Mills\COGO\GM EASEMENTS\DE3 LGL.docx
THENCE South 18 deg. 21 min. 08 sec. East, a distance of 373.88 feet to the POINT OF
BEGINNING, containing 41,337 square feet or 0.949 acres of land, more or less.
Bearings are referenced to Texas State Plane Coordinate System,North Central Zone (4202),
North American Datum of 1983 as derived from GPS observation.
Exhibit map attached and made a part hereof.
JUHN N. ROGERS
•,.09 6372 Qy:
�FESSZ�
7/25/2028
Page 2 of 3
EA10715-Twin Mills\COGO\GM EASEMENTS\DE3 LGL.docx
PARK DR'v L BEARINGS ARE REFERENCED
A, St. M7,, P.R.T.C.TJ _ _ _ � TO TEXAS STATE PLANE
COORDINATE SYSTEM,
NORTH CENTRAL ZONE
\ (4202 1, NORTH AMERICAN
DATUM OF I983 DERIVED
\ FROM GPS OBSERVATION.
I I I I I I I \
h=W.00'�L=172. 2 168009'i5�' I I ;l �
N '3852 E �
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CB=S 53'51'44" E C=23.90'
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A N 15,*54"I'7' W �;� BEGINNING
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C.I.R.F. \ 9451'
/"ILLEGIBLE" . N 86'47'03" W 434.95'
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\ -- --------------- POINT OF
- r4CM IENCING
1/2" C.I.R.F.
SL. 5023 \
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GRAPHIC SCALE 1 "=100 ' w
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EXHIBIT°A" MAP SHOWING
PUBLIC DRAINAGE EASEMENT, 0 100 200
SITUATED IN A PORTION OF THE
BENJAMIN THOMAS SURVEY, ABSTRACT NO. 1497, o
CITY OF FORT WORTH, TARRANT COUNTY,TEXAS
�°' GT• F' �s N
G OODWIT<
Job No.1 10715 Scale, 1" = 100' Sheet . � ��'• �
MARSHAL L 9 Drafted i BA.J. Checked i J.N.R. 3 �oi�i N. R06ERS �
CML ENGINEERS—PLANNERS•-SURVEYORS o 6372 Qy:
Surveyed on the Ground i 03/21/2017 9ossio?
2405 Mustang Drive,Grapevine,Texas 76051 o f �7� .... �' o
Metro(817)329-4373 Date Prepared, 07/23/2018
TBPE REGISTRATION#E F-2944 3 w
TBPLS#E 10021700 Revised: Revised 1 Date Signed, 7/25/2018
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U) POND A
0
0
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a C
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o GRAPHIC SCALE 1 ''=100 '
n � z
0 100 200 300
c rn
co POND A DISCHARGE SUMMARY
C
a_ INFLOW (cfs 1 OUTFLOW (cfs 1 STORAGE (ac.ft. 1 W.S. ELEV
co
I—year 16 .6 2 .2 0.7 802 .4
5—year 26 .5 5.4 1 .2 803 .3
100—year 1 49 . 1 1 15.2 2 .3 1 804 .9
0 Jed�JSl u l 1 1 l w HT 13
0
SHEET I OF 5
w
� o
0
TOP OF BANK
ELEV= 806.00 BRONZELEAF
/O LANE
s P}
P
100-YR WSEL = 804.90
O
100-YR HGL
::15:8L.F.LOF24' R.G.P. p.7� 0�.
0.627 3I'L.F. OF 30' R.G.P.
CFW FILE N0. O e 2.00Z
W-1463 r�
30' R.C.P.
m Q Req'd = 30.0 cfs
0 0 Prov'd = 30.0 cfs
24' R.C.P. u - V = 6.1 fps
Q Req'd = 15.2 cfs m SBMONA A 0 sf = 0.54%
El 0 Prov'd= 15.2 cfs 0 NTS
V = 4.8 fps
sf = 0.68% o
OD
O
cv
O N
Ln R
J
lD '
Ln J(n
O
Ln TOP OF BANK
— LOT
_ ELEV= 806.00 22
/O l EMERGENCY SPILLWAY
a ELEV=805.00
I00-YR WSEL =804.90
N
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0 P
0-
�( p
Cf
MiN
coO.7=MiN. 0.7 .
0
L
n
N SBI6.ddONB B
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TOP OF BANK
F 50 ' EL = 806.00
lw
c
0
w 0. 451 EL = 805.00
3 NTS
f
Ln O ��
0 E�p HT B
SHEET 2 OF 5
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0
oc
BRONZELEAF
LANE
P�
0 70X MIN• NTS
3'-9 //2'
co 24 24'
O RCP RCP
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4 '-6'
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s PLAN WING ELEVATION
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ELEV.=805.00
> I`, " O I l
N NO TE
INSTALL REINFORCING PER
TXDOT STD. CH-FW-O
n
ELEV.=800.50
C
SECTION A-A
POND A OUTLET HEADWALL DETAIL
(MODIFIED TXD 0 T STD. CH-FW-0 )
Lo rl-
SCALE; l'=5' Eyf B
O
SHEET 3 OF 5
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Pond Report
Hydraflow Hydrographs Extension for AutoCADO Crvd 306 2018 by Autodesk,Inc.v12 Saturday.05/26/2018
Pond No.3- POND A
Pond Data
Pond storage is based on user-defined values.
Stage I Storage Table
Stage(ft) Elevation(ft) Contour area(sqft) incr.Storage(cult) Total storage(cult)
0.00 800.50 n/a 0 0
0.50 801.00 n/a 1,274 1,274
1.00 801.50 n/a 7,663 8,937
1,50 802.00 We 11,092 20.029
2.00 802.50 nta 12.002 32.031
2.50 803.00 Ma 12,868 44,899
3.00 803.50 Ma 13,762 W651
3.50 804,00 n/a 14,654 73,305
4.00 804.50 n/a 15,575 W880
4.50 $05.00 nta 16,512 105,392
5.00 805.50 n/a 17,468 122,860
5.50 806.00 Ma 18,442 141,302
Culvert I Orifice Structures Weir Structures
[A] [B] [C] [PrfRsr] [A] [B] [C] [D]
OD Rise(in) = 24.00 0.00 0.00 0.00 Crest Lon(ft) = 37,04 0.D0 0.00 0.00
O Span(in) = 24.00 0,00 0,00 0.00 Crest El.(ft) = 805.00 80050 O.DO 0.00
N No.Barrels 1 0 0 0 Weir Coeff. - 3,33 OAS 3.33 3.33
Invert El.(ft) = 800.50 0.00 0.00 0.00 Weir Type = 1 20 degV - --
Length(ft) = 167.00 0.00 0,00 0.00 Multistage = Yes Yes No No
Slope(%) = 0.62 0.00 0.00 n/a
M N-Value = .013 .013 .013 n/a
O Orifice Cceft. = 0.60 0.80 0.60 0.80 Exfil.(inihr) = 0.000(by Wet area)
Multistage = n/a No No No TW Elev.(ft) = 0.00
Hole OuNwtgnU "dam Are ansWad under MW(k)sM oeaat(uC)wntrn Wok nears drekad for omke oon W a lk)and weroww'ca(a)
a Stage I Storage I Discharge Table
m
r) Stage Storage Elevation Clv A Civ B Civ C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total
ft tuft ft cfs cfs Cfa C1s c18 cfs cfs cf8 C1s C1s C1s
7
0.00 0 800.50 0.00 - - 0.00 - - - - - 0.000
O 0.60 1,274 801.00 0.08 is -- -- - 0.DO 0.08 s -- - - - 0.076
1.00 8,937 801,50 0.44 is -- - 0.00 0.42 s - - - - 0.424
a 1,50 20.029 802.00 1.20 is - - 0.00 1.163 -- - - - 1.156
2.00 32,031 802.50 2.38 Ic - - - 0.00 2.35 s - - - - 2.351
2.60 44,899 803.00 4.06 is -- - - 0,00 4.06 s - - - - 4.062
300 58,651 803.50 6.37 is - - 0.00 6.35 s -- -- - - 6.346
v 3.50 73,305 804.00 9.23 is - - - 0.00 9.22 s - - - - 9.217
s 4.00 88,880 804.50 12.66 is - - - 0.00 12.66 s - - - - 12.66
4.50 105,392 805.00 15.94 oc - - - 0.00 15,94 s - - - - 15.°d
1 5.00 122,860 805.50 26.66 oc - 21.52 s 5.14 s -- - - - 26."
rn 5.50 141,302 806.00 28.43 oc - 25.06 s 3.35 s -- - - 28.42
c
-3
~ Project: Twin Mills Simulation Run: 100•YR PROPOSED
rn Reservoir: Pond A
c
.Start of Run: 27Dec2016 12:00 Basin Model: P� roposed Condition
/ End of Run: 28Dec2016,12:00 Meteorologic Model: 100-yr
Compute Time:23May2018,11:51:33 Control Speckations: Control 1
c
Volume Units:IN
-3
1-- Computed Results
i Peak Inflow: 49.1(CFS) Date/Time of Peak Inflow: 28Dec2016,00:16
Peak Discharge: 152(CFS) Date/Time of Peak Wgfiarge413Dec2016,00:44
Inflow Volume: 8.21(IN) Peak Storage: 2.3(AC-FT)
N O_ Discharge Voiume7.53(IN) Peak Elevation: 604.9(FT)
SHEET 4 OF 5
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DETENTION SUMMARY POND A
A DETENTION FACILITY HAS BEEN DESIGNED TO SERVE THE PROPOSED
TWIN MILLS PHASE 4 DEVELOPMENT. IN ORDER TO REDUCE THE PEAK
FLOWS GENERATED BY THE DEVELOPMENT BASIN 'B-3 (RATIONAL METHOD
'A-3' 8 'A-4' J WILL DRAIN TO DETENTION POND 'A '. POND 'A ' WILL THEN
OUTFALL BY MEANS OF A 24 " DIAMETER PIPE THAT WILL CONNECT TO AN
EXISTING 5 'x5 ' JUNCTION BOX AND BE ROUTED THROUGH EXISTING
S.D. LINE 'A ' DOWNSTREAM CONSTRUCTED WITH TWIN MILLS PHASE 2,
SECTION 3A FILE NUMBER (W-l4 63 J.
THE DETENTION ANAL PSIS WAS PERFORMED UTILIZING THE U.S. ARMY
CORPS OF ENGINEERS HEC-HMS v4.2 UNIT HYDROGRAPH COMPUTA TION
PROGRAM USING SCS METHODOLOGY. A HYDROGRAPH WAS GENERATED
FOR THE DRAINAGE AREA BEING DETAINED AND THEN ROUTED
THROUGH DETENTION POND 'A '.
THE 100-YEAR DISCHARGE FROM THE PROPOSED POND HAS BEEN
CALCULATED TO BE 15.2 CFS. REFER TO THE FINAL ISWM FOR
DETAILED CALCULATIONS AND ANALYSIS OF THE DOWNSTREAM
SYSTEM CAPACITY.
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Ln LANDSCAPE NOTES
0 I. THE OWNER SHALL BE RESPONSIBLE FOR THE ESTABLISHMENT, MAINTENANCE,
__ AND VIGOR OF PLANT MATERIAL IN ACCORDANCE WITH THE DESIGN INTENT AND
W AS APPROPRIATE FOR THE SEASON OF THE YEAR.
a 2. LANDSCAPE AND OPEN AREAS SHALL BE FREE OF TRASH, LITTER, AND WEEDS.
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Q) 3. NO PLANT MATERIAL SHALL BE ALLOWED TO ENCROACH ON R.0. W. ,
SIDEWALKS, OR EASEMENTS TO THE EXTENT THA T VISION OR ROUTE
o OF TRAVEL FOR VEHICULAR, PEDESTRIAN, OR BICYCLE TRAFFIC IS IMPEDED.
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� 4. TREE MAINTENANCE SHALL BE IN ACCORDANCE WITH THE STANDARDS
Q) OF THE INTERNA TIONAL SOCIETY OF ARBORICUL TURF.
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a_ 5. TREE STAKING MATERIALS, IF USED, SHALL BE REMOVED AFTER
(l J GROWING SEASON, NO MORE THAN (l J YEAR AFTER INSTALLATION
(STEEL TREE STAKES, WIRES, AND HOSES ARE PROHIBITED ).
6. REMOVE TRASH, SEDIMENT, OR DEBRIS FROM POND AREAS. THE
3 PONDS ARE DESIGNED TO ACCUMULATE SEDIMENT. REMOVE SEDIMENT
WHEN THE DEPTH REACHES 8 TO l0 INCHES. REPAIR DISTURBED AREA
Wl TH SEED AND S TRA W.
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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 ACCUMULA TED SEDIMENT, TRASH, AND DEBRIS IN A MANNER
~ THA T IS PERMI T TED B Y THE L OCAL, S TA TE, AND FEDERAL REGUL A TIONS.
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SHEET 5 OF 5
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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 8
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
and
Amount of silt in
flume
Amount of ponded
water
Amount of wetland
ve etation
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.1 111 7/2 0 1 6
Condition of
filtrations stem
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
FORT WORTH °
mater
INSPECTION CHECKLIST FOR SIMPLE DETENTION BASIN S
Facility Name: Facility Agreement Number:
Basin/Pond Number: Inspected By: Date:
Type of Inspection:Annual ,Quarterly_, Monthly , Routine_,or Storm Event_, (#days since event )
Basin Conditions:
1. Is there standing water or wet spots? Yes_No_Comments
2. Does sides or bottom show signs of erosion,settling,cracking,etc? Yes_No_Comments
3. Does dam or emergency spillway show signs of erosion,settling,
cracking,or other problems? Yes_No_Comments
4. Is there evidence of animal burrowing in dam? Yes_No,Comments
5. Is there evidence of changes in shape or volume of basin? Yes_No _Comments
6. Do vegetated areas need mowing? Yes_No,Comments
7. Are there trees or woody growth in dam? Yes_No_Comments
8. Are there areas that need to be re-vegetated? Yes_No,Comments
9. Is there any accumulation of silt,trash,debris or litter in the basin? Yes_No_Comments
10.Are there any other basin maintenance activities needed? Yes_No_Comments
Structural Components:
1. Are pipes,channels,trash racks,etc.free of obstructions? Yes_No_Comments
2. Are pipes,spillway or trash racks in need of repair? Yes_No_Comments
3. Is the low flow or trickle channel in need of repair? Yes_No_Comments
4. Is the outfall channel in need of repair? Yes_No`Comments
5. Are there any other structural maintenance activities needed? Yes_No_Comments
Plan for correcting deficiencies: Signature:
Owner's Representative
Date:
Form CFW-6
CFW-SEPTEMBER 2015 Appendix A A-17