HomeMy WebLinkAboutContract 47961 5oU�K
CITY SECREtAW 9l��
tMjtREWE# CONTRACT NO.
STORM WATER FACILITY
MAINTENANCE AGREEMENT
THIS AGREEMENT, made and entered into this 4 day of ,
201 °"iy and between Fort acting by and through
Lh 60afl Of U—Jarghal , 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 3.785 acre tract located in the W. M. GRAY Survey, Abstract 635, Tarrant
County, Texas according to the deeds recorded in Volume 1330, Page 177; Volume 878,
Page 454; Volume 394, Page 34; Volume 524, Page 87; and Volume 592, Page 483, all of
the 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 WASHINGTON HEIGHTS
ELEMENTARY SCHOOL, 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 storm water 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 Storm Water Management Facilities be constructed and maintained on a
portion of the Property; and
OFFICIAL RECORD
CITY SECRETARY
FT. WORTH, TX
STORM WATER FACILITY MAINTENANCE AGREEMENT
Rev.09/10/2012
WHEREAS, the City requires that on-site Storm Water Management Facilities
("Facility") as shown on the Plan be constructed and adequately maintained by the
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 Storm Water 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 Storm Water Facility
includes all pipes, channels or other conveyances built to convey storm water
to the facility, as well as all structures, improvements, and vegetation provided
to control the quantity and quality of the storm water. Adequate maintenance
is herein defined as good working condition so that these facilities are
performing their design functions. The Storm Water 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.
STORM WATER FACILITY MAINTENANCE AGREEMENT 2
Rev.09110/2012
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
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
STORM WATER FACILITY MAINTENANCE AGREEMENT 3
Rev.09/10/2012
ANY LIABILITY IN THE EVENT THE FACILITY FAILS TO
OPERATE PROPERLY. LANDOWNER 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
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.
STORM WATER FACILITY MAINTENANCE AGREEMENT 4
Rev.09/10/2012
[SIGNATURE PAGE FOLLOWS]
Executed this G49 da of 1, 2015, 0
Landowner City of Fort Worth
Name: Ferrmide e uS Ft A P,+
Assistant City Manager
Title: Boo tjft��-
Approved as to Form and Legality
Assistant City Attorney/Pcie-TMu2 fit-&qsMcT--
ATTEST
�y
City re Se ° , °�
FXAS
NO M&C REQUIRED
OFFICIAL RECORD
CITY SECRETARY
FT. WORTH, TX
STORM WATER FACILITY MAINTENANCE AGREEMENT 5
Rev.09/10/2012
STATE OF TEXAS §
COUNTY OF TARRANT §
This instrument was acknowledged before me on 1 by
no ewA a, Assistant City Manager of the City of Fort Worth,06n behalf of the City
of Fort Worth.
TRIKINYA L JOHNSON
coo" r'PU°. Notary Public,state of-Texas
ar; Comm.Expires 04-17-2018 Notary Pikiic, St of Texas
•''„ '6; Notary ID 1236632.0
nnm
STATE OF TEXAS §
COUNTY OF TARRANT §
Before e, the undersigned authority, _on this �'� day of
201's,,(O personally appeared
C s SiZ-
known
to me to be the person whose name is subscribed to the foregoing instrument and
acknowledged to me that
--- — - —,___ ;"kid-tha he executed the same as its
and as the act of such and for the purposes and
consideration expressed in the foregoing instrument.
;�" ,�y!'"rh�,.+BtnILYAp�1�9Y11ER
ES
y t ''f 4!i�. AU9U3t k4W,2018
otary Public, State of Tcxas
OFFICIAL RECORD
CITY SECRETARY
FT. WORTH, TX
STORM WATER FACILITY MAINTENANCE AGREEMENT 6
Rev.09/10/2012
EXHIBIT "A"
PERMANENT DRAINAGE FACILITY EASEMENT
Part of Lot 1-R, Block 102-R, M.G. Ellis Addition
W. M. Gray Survey, Abstract No. 635
City of Fort Worth, Tarrant County, Texas
DESCRIPTION, of a 4,256 square foot(0.098 acre)tract of land situated in the W. M. Gray Survey, Abstract No.
635, City of Fort Worth, Tarrant County, Texas; being part of Lot 1-R, Block 102-R, M.G. Ellis Addition, an
addition to the City of Fort Worth according to the plat recorded in Instrument Number D202148547 of the
Official Public Records of Tarrant County, Texas; said 4,256 square foot tract being more particularly described
as follows (bearing system for this survey is based on the Texas State Plane Coordinate System - NAD 83,
North Central Zone 4202, based on observations made on March 14, 2014 with a combined scale factor of
1.00012):
COMMENCING, at a 1/2-inch iron rod found at the intersection of the west right-of-way line of N. Houston Street
(a 60-foot wide right-of-way) and the north right-of-way line of N.W. 32nd Street (a 60-foot wide right-of-way);
said point being the southeast corner of said Lot 1-R;
THENCE, South 89 degrees, 44 minutes, 41 seconds West, along the said north line of N.W. 32nd Street and
the south line of said Lot 1-R, a distance of 25.00 feet to the POINT OF BEGINNING;
THENCE, South 89 degrees, 44 minutes, 41 seconds West, continuing along the said north line of N.W. 32nd
Street and the said south line of Lot 1-R, a distance of 112.00 feet to a point for corner;
THENCE, North 00 degrees, 15 minutes, 19 seconds West, departing the said north line of N.W. 32nd Street
and the said south line of Lot 1-R, a distance of 38.00 feet to a point for corner;
THENCE, North 89 degrees, 44 minutes, 41 seconds East, a distance of 112.00 feet to a point for corner;
THENCE, South 00 degrees, 15 minutes, 19 seconds East, a distance of 38.00 feet to the POINT OF
BEGINNING;
CONTAINING: 4,256 square feet or 0.098 acres of land, more or less.
(A survey plat of even survey date herewith accompanies this description.)
The undersigned, Registered Professional Land Surveyor, hereby certifies that the foregoing description
accurately sets out the metes and bounds of the permanent drainage facility easement described.
4�•°F• rF
Michael Larry Lewis, J Cate
Registered Professional Land Surveyor No. 5773 "t""""""" ,J
MICI�AEL LARRY LEUIl15,JR
Pacheco Koch Consulting Engineers, Inc. ""•"'•'•' ••
6100 Western Place, #1001, Fort Worth TX 76107 ,�:?�, 5773 P.:.
(817)412-7155
TX Reg. Surveying Firm LS-10008001
3528-14.095EX4.doc mcb
3528-14.095EX4.dwg dri
PAGE 1 OF 2
LEGEND EWWO o° 0T •B1P
— . - — PROPERTY LINE
EASEMENT LINE
O POINT FOR CORNER
(UNLESS OTHERWISE NOTED)
(C.M.) CONTROLLING MONUMENT
P.O.B. - POINT OF BEGINNING 0 25 50 100
P.®o C.- POINT OF COMMENCING GRAPHIC SCALE IN FEET
LOT 1-R, BLOCK 102-R I
M.G. ELLIS ADDITION
(INST. NO. D202148547)
FORT WORTH INDEPENDENT SCHOOL DISTRICT I
(VOL. 1330, PG. 177)
(VOL. 878, PG. 454)
WASHINGTON HEIGHTS INDEPENDENT SCHOOL DISTRICT ^
(VOL. 394, PG. 34) 3
(VOL. 524, PG. 87) co
(VOL. 592, PG. 483)
ZQ� Z �
w
o f PERMANENT 20'x20' PUBLIC OPEN Iowa °
II DRAINAGE SPACE EASEMENT
(INST. NO. D202148547)
l FACILITY O
w EASEMENT S 00'15'19" E
Z o 4,256 SF 3800
a (0.098 ACRES)
o
I 10' ELECTRIC EASEMENT I O v
v O O ( (INST. NO. 0 20 21 4854 7) N 89°44'41" E
o / y 112.00'
Z °
N 00015'19" W
38.00'
EJ
r 162.78' _
(INST. NO. 0202148547)ACE EASEMENT^ S 89.44'41" W
ROD INCH IRON 112.00' P.O.B. P.O.C.
ROD FOUND
(c M•) S 89'44'41" W 1/2-INCH IRON
N. W 32ND STREET 25.00' (C.M.)
FOUND
(60-FOOT WIDE RIGHT-OF-WAY)
NOTES:
I
1, A metes and bounds description of even
° survey date herewith accompanies this plat
The undersigned, Registered Professional Land of survey.
Surveyor, hereby certifies that this plat of
survey accurately sets out the metes and .....OF Tie 2. Bearing system for this survey is based on
bounds of the easement tract described. �l'�31sTE9F+' the Texas State Plane Coordinate System -
( %�' NAD 83, North Central Zone 4202, based on
observations made on March 14, 2014 with a
RMCHAEL...... ..... combined scale factor of 1.00012.
G�I '
5773
Michael Larry ewis, Jr. ate 9.p•�:FSS:°ti+ ERMANENT DRAINAD
Registered Professional SCR'' FACILITY EASEMEMT
Land Surveyor No. 5773
PART OF LOT 1-R, BLOCK 102-R,
Pacheco Koch 8100 WESTERN PLACE. Sl11TE 1001 M.G. ELLIS ADDITION
FORT WORTH. TX 76107 817.412.7155
r I TX REG. ENGINEERING FIRM F-489 LOCATED IN THE CITY OF FORT WORTH, TEXAS
DALLAS . FORT WORTH ■ HOUSTON TX REG. SURVEYING FIRM LS-10008001_ W. M. GRAY SURVEY, ABSTRACT NO. 635,
t
4RAw1v BY I ow=ED BY BcALE DATE I JO040EL MITARRANT COUNTY, TEXAS
DRI MCB/MLI_ 1"=50' JAN. 2015 3528-14.0 PAGE 2 OF 2
DWG FILE: 3528-14.095E-X4_DWO
3528-14.095EX4.txt
North: 6977906.69' East: 2318502.33'
Segment #1 . Line
Course: 589°44'41"w Length: 112.00'
North: 6977906.19' East: 2318390.33'
Segment #2 . Line
course: NO°15'19"w Length: 38.00'
North: 6977944.19' East: 2318390.16'
segment #3 . Line
Course: N89°44'41"E Length: 112.00'
North: 6977944.69' East: 2318502.16'
Segment #4 . Line
course: SO°15'19"E Length: 38.00'
North: 6977906.69' East: 2318502.33'
Perimeter: 300.00' Area: 4256 Sq. Ft.
Error Closure: 0.00 Course: NO°00'00"E
Error North: 0.000 East: 0.000
Precision 1: 300000000.00
Page 1
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DALLAS, TX 75206 472.235.3031
TX REG. ENGINEERING FIRM F-469 LOT 1-R, BLOCK 102-R, M.G. ELLIS
DALLAS ■ FORT WORTH ■ HOUSTON TX REG. SURVEYING FIRM LS-100080-00 LOCATED IN THE CITY OF FT. WORTH, TEXAS
DRAWN BY CHECKED BY SCALE DATE JOB N4VAWER W.M. GRAY SURVEY, ABSTRACT NO. 635,
TSR JCM 1"=40' 01/05/15 3545-14.134 TARRANT COUNTY, TEXAS
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PROPOSED 48"
UNDERGROUND
DETENTION SYSTEM!
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SECTION A-A
Pacheco Koch 8350 N. CENTRAL EXPWY. SUITE 1000 WASHINGTON HEIGHTS ES DETENTION POND
DALLAS, TX 75206 972.235.3031
TX REG. ENGINEERING FIRM F-469 LC IT 1—R, BLOCK 102—R, M.G. ELLIS .A�DDIT10N
DALLAS . FORT WORTH . HOUSTON TX REG. SURVEYING FIRM LS-100080-00 LOCATED IN THE CITY OF FT. WORTH, TEXAS
DRAWN BY I CHECKED BY SCALE D ATE JOB NUMBER W.M. GRAY SURVEY, ABSTRACT NO. 635,
TSR JCM NTS 01/05/15 1 3545-14.134 TARRANT COUNTY, TEXAS
1L-: �RJ'�2 Ca4'
XREF FILE: 3545-14.1348A.DWG
0ETEH700H PROFOL E PHAS E 00
PROPOSED
GROUND
Z PROPOSED 12"
LATERAL
I-
93'
PROPOSED 18" PROPOSED 18"
STORM DRAIN OUTFALL
FL 48"=640.55 FL 48"=640.30
FL 18"=641.80 FL 18"=640.30
PROPOSED 48"
UNDERGROUND DETENTION
SYSTEM @ 0.30%
SECTION B-B
0
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8350 N. CENTRAL EXPWY. SUITE 1000 WASHINGTON HEIGHTS ES
Pacheco Koch DALLAS, TX 75206 972.235.3031 DETENTION POND
TX REG. ENGINEERING FIRM F-469 I-OT 1—R, BLOCK 102-8, M.G. ELLIS
DALLAS . FORT WORTH . HOUSTON TX REG. SURVEYING FIRM LS-100080-00 LOCATED IN THE CITY OF FT. WORTH, TEXAS
DRAWN BY CHECKED BY SCALE DATE JOB NUMBER W.M. GRAY SURVEY, ABSTRACT N0. 635,
TSR JCM NTS 01/05/15 3545-14.134 TARRANT COUNTY, TEXAS
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STA 0+30.35 LINE "ST-7 (1)"
INSTALL:
1-45' BEND
FL 18"=640.20 (NW)
FL 18"=640.20 (S)
STA 0+37.42 LINE "ST-7 (1)"
INSTALL:
STA 0+00.00 LINE "ST-9"
STA 0+00.00 LINE "ST-8" 1-45° BEND
CONNECT TO PROPOSED FL 18"=640.22 (W)
CONNECT TO PROPOSED CONTECH UNDERGROUND FL 18-=640.22 (SE) I
CONTECH UNDERGROUND DETENTION SYSTEM.
DETENTION SYSTEM. FL 12"=641.81 (N)
FL 48"=640.55 (E) FL 48"=640.31 (E)
FL 18"=641.80 (W) FL 48"=640.31 (W) , a
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_
PROPOSED
— _ _ — _ _ _ _ I_ _ D _
MAINTENANCE
MANHOLE
— — — — STA 0+63.26 LINE "ST-7"
CONNECT TO PROPOSED — —
CONTECH UNDERGROUND
DETENTION SYSTEM.
FL 18"=640.30 (E)
• FL 48"=640.30 (W)
STA 0+00.00 LINE "ST-7 (1)"
CONNECT TO EXISTING
a',W 10' CURB INLET
PROPOSED FL 18"=640.10 (N)
MAINTENANCE DEVELOPMENT
MANHOLE ADEQUATE OUTFALL
0 10 20 40
GRAPHIC SCALE IN FEET
Pacheco KOCh 8350 N. CENTRAL EXPWY. SUITE 1000 WASHINGTON HEIGHTS ES
DALLAS, TX 75206 972.235.3031 DETENTION POND
TX REG. ENGINEERING FIRM F-469 LDT 1—R, BLOCK 102—R, M.G. ELLIS ADDITION
DALLAS . FORT WORTH . HOUSTON TX REG. SURVEYING FIRM LS-100080-00 LOCATED IN THE CITY OF FT. WORTH, TEXAS
DRAWN BY CHECKED BY SCALE DATE JOB NUMBER W.M. GRAY SURVEY, ABSTRACT NO. 635,
SR JCM 1"=20' L01/05/15 3545-14.134 TARRANT COUNTY, TEXAS
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XREF FILE: 3545-14.134BA.DWG
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GRAPHIC SCALE IN FEET
WASHINGTON HEIGHTS ES
Pacheco Koch 8350 OALLAS' CENTRAL EXPWY. SUITE 1000 DETENTION POND
. TX 75206 972.235.3031
TX REG. ENGINEERING FIRM F-469 [-Of 1—R, BLOCK 102—R, M.G. ELLIS ,l.DDIT,0rj
DALLAS . FORT WORTH HOUSTON TX REG. SURVEYING FIRM LS-100080-00 LOCATED IN THE CITY OF FT. WORTH, TEXAS
DRA"BY CHECKED BY SCALE DATE JOB NUMBER W.M. GRAY SURVEY, ABSTRACT NO. 635,
TSR JCM 1"=40° 01/05/15 3545-14.134 TARRANT COUNTY, TEXAS
iW F1L_: _'5 -!L`a-14.134GF?J'H DW
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Exhibit "C"
CITY OF FORT WORTH STORM WATER 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.
STORM WATER FACILITY MAINTENANCE AGREEMENT 8
Rev.09/1012012
C I;\1%o
ENGINEERED SOLUTIONS
Inspection & Maintenance Guide for
Corrugated Steel Pipe Underground Detention Systems
Safety: Before entering into any storm sewer or underground detention system check to
make sure all OSHA and local safety regulations and guidelines are observed during the
maintenance process. Hard hats, safety glasses, steel-toed boots and any other appropriate
personal protective equipment shall be worn at all times.
Frequency: Inspections shall be completed annually.
Inspection Check List:
Check quality of parking lot surface.
• Is there evidence of potholes or sinkholes?
• Is there evidence of an unusual amount of silt and soil build-up on the surface?
Check for pipe symmetry(uniform curvature).
• Flexible steel pipe is designed to handle minor deflections. Pipe structures deflected
more than 7% from design shape, or those that show localized distortions may
require further investigation.
Check for pipe joint quality.
• Is there evidence of backfill material infiltrating into the pipe structure?
Check for proper operation of outlet structure.
• Is the outlet drainpipe clogged?
• In dry conditions, has the system drained to the elevation of the lowest outlet pipe.
Silt Deposition
• If accumulated silt is interfering with the operation of the detention system (i.e.:
blocking outlet pipe or if silt deposition has significantly reduced the storage capacity
of the system) it should be removed. This can be accomplished by the use of a "clam
shell' device or vactor truck.
Maintenance:
Underground storm water detention and retention systems should be inspected at regular
intervals and maintained when necessary to ensure optimum performance. The rate at
which the system collects pollutants will depend more heavily on site activities than the size
or configuration of the system.
Inspection
Inspection is the key to effective maintenance and is easily performed. CONTECH
recommends ongoing quarterly inspections of the accumulated sediment. Sediment
deposition and transport may vary from year to year and quarterly inspections will help
insure that systems are cleaned out at the appropriate time. Inspections should be
performed more often in the winter months in climates where sanding operations may lead
to rapid accumulations,or in equipment washdown areas. It is very useful to keep a record of
each inspection. A sample inspection log is included for your use.
Systems should be cleaned when inspection reveals that accumulated sediment or trash is
clogging the discharge orifice. CONTECH suggests that all systems be designed with an
access/inspection manhole situated at or near the inlet and the outlet orifice. Should it be
necessary to get inside the system to perform maintenance activities, all appropriate
precautions regarding confined space entry and OSHA regulations should be followed.
Cleaning
Maintaining an underground detention or retention system is easiest when there is no flow
entering the system. For this reason, it is a good idea to schedule the cleanout during dry
weather.
Accumulated sediment and trash can typically be evacuated through the manhole over the
outlet orifice. If maintenance is not performed as recommended, sediment and trash may
accumulate in front of the outlet orifice. Manhole covers should be securely seated
following cleaning activities.
Inspection&Maintenance Log:
Diameter System Location: Anywhere, USA
Date Depth of Accumulated Maintenance Maintenance Comments
Sediment Trash Performed Personnel
12/01/99 2" None Removed B.Johnson Installed
Sediment
Removed Swept
03/01/00 1" Some Sediment and B. Johnson parking lot
Trash
06/01/00 o" None None
09/01/00 0" Heavy Removed Trash S. Riley
12/01/00 1" None Removed S. Riley
Sediment
4/01/01 0" None None S. Riley
Removed ACE
04/15/01 2" Some Sediment and Environmental
Trash Services
SA.
Inspection&Maintenance Log:
" Diameter System Location:
Date Depth of Accumulated Maintenance Maintenance Comments
Sediment Trash Performed Personnel
Exhibit "D"
Storm Water 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 Storm
Water Quality
Structure
Type of Storm i
Water Quality
Structure
Structure type and
Condition
Condition of Rip-
STORM WATER FACILITY MAINTENANCE AGREEMENT 9
Rev.09/10/2012
Rap
Condition of
filtrations stem
Berm or
Embankment
Settlement
Location of erosion
Evidence of
Animals
Evidence of Aquatic
life
Condition of
Aeration
Foundation
STORM WATER FACILITY MAINTENANCE AGREEMENT 10
Rev.09/10/2012
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