HomeMy WebLinkAboutContract 60327Date Received: 10/19/2023
Time Received: 11:35 a.m.
Permit No.: SWFMA-23-0044
City Secretary No.: 60327
STORMWATER FACILITY
MAINTENANCE AGREEMENT
THIS AGREEMENT, made and entered into this 19th day of October
2023 , by and between GCP Van Zandt, LLC, a Nebraska limited liability company,
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 propdrty described as a
tract of land situated in the William Bussell Survey, Abstract No. 151, Tarrant County,
Texas according to the deeds recorded in Document Numbers D222292902, and
D221069049, 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 Van Zandt West 7th, 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 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 maintained by the
Landowner, its successors and assigns, the location and dimensions of which is shown and
STORMWATER FACILITY MAINTENANCE AGREEMENT OFFICIAL RECORD
Rev. 03/01/2022 BN CITY SECRETARY
FT. WORTH, TX
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
of inspection is to follow-up on reported deficiencies and/or to respond to
STORMWATER FACILITY MAINTENANCE AGREEMENT 2
Rev.03/01/2022 BN
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
Cleric 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
THE CITY OF FORT WORTH, ITS AGENTS, SERVANTS AND
STORMWATER FACILITY MAINTENANCE AGREEMENT 3
Rev. 03/01/2022 BN
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 improvements that impede drainage
shall be erected within the boundaries of the Property in which the Facility is
located as outlined on Exhibit "A". Landowner covenants and agrees that no
habitable building shall be erected on the above property abutting such
boundaries of the Property in which is Facility is located, 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 owner's association.
SIGNATURE PAGE TO FOLLOW
STORMWATER FACILITY MAINTENANCE AGREEMENT 4
Rev. 03/01/2022 BN
Executed this 19th day of October
CITY OF FORT WORTH
Dam &Uha(o ff
Dana Burghdoff (Oct 1 , 2023 0954 CDT)
Dana Burghdoff
Assistant City Manager
City of Fort Worth
Date: Oct 19, 2023
Approved as to Form and Legality:
Thomas Royce Hansen,
Assistant City Attorney II
City Attorney's Office
Date: Oct 18, 2023
2023
LANDOWNER
GCP Van Zandt, LLC
a Nebraska limited liability company
19`4 //11�)-
Wiegert
Signatory
Date:
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.
Rebecca Diane Owen (Oct 18, 2023 10:36 CDT)
4944�n Rebecca Owen
4 b�
aaO�° FORt.,O 0
�,o Planning Manager
ATTEST: ova o9-+0
o=°
P°o* *� Date: Oct 18, 2023
da�Il nEXA`oo��
Jannette S. Goodall
City Secretary
Date: Oct 19, 2023
OFFICIAL RECORD
CITY SECRETARY
FT. WORTH, TX
STORMWATER FACILITY MAINTENANCE AGREEMENT 5
Rev. 03/01/2022 BN
STATE OF TEXAS §
COUNTY OF TARRANT §
This instrument was acknowledged before me on October 19th, 2023 by
Dana Burghdoff, Assistant City Manager of the City of Fort Worth, on behalf of the City
of Fort Wnrth.
O�PRYALe/ BROOKE BONNELL
a Notary Public
* * STATE OF TEXAS
�,9�0000VVVV�}� Notary I.D. 134009525
OF
My Comm. Exp. Oct. 11, 2026
LANDOWNER
STATE OF ftvl Vll
COUNTY OF _M1 IDS
Digitally signed by Brooke
Brooke Bonnell Bonnell
Date: 2023.10.19 09:57:50
05'00'
Notary Public, State of Texas
2.
0
BEFORE ME, the undersigned authority, a Notary Public in and for thef State of
RVAH —, on this day personally appeared A W AW) �JCT+
(name), hj(}t�( Ajr_ r (tit e), known to me to be the
person whose name is subscribed to the foregoing instrument, and acknowledged to me
that he/she executed the same for the purposes and consideration therein expressed, as the
act and deed of 6 CF VW W& ILL( (entity), a
h inn fA VO Al, (entity type) and in the capacity therein
stated. r j
ff GI1VEN UNDER MY HAND AND SEAL OF OFFICE this I a day
of ot,� M/l.Y 201 .
I /Vu
IIN GENEML NOTARY -State of Nebraska Notary Publi , State of hcw f �i
KAI76YN BUNNER
My Comm. Exp. February 28, 202A
STORMWATER FACILITY MAINTENANCE AGREEMENT 6
Rev. 03/01/2022 BN
EXHIBIT "A"
INSERT LEGAL DESCRIPTION
STORMWATER FACILITY MAINTENANCE AGREEMENT
Rev. 03/01/2022 BN
LEGAL DESCRIPTION
BEING a 6,407 square foot (0.1471 acre) tract of land situated in the William Bussell Survey, Abstract No. 151, City
of Fort Worth, Tarrant County, Texas, and being a portion of Lot 8R, Lot 7R, and Lot 4R, and a portion of an alley
dedication, as shown on the plat of K.M. Van Zandt's 2nd Addition, an addition to the City of Fort Worth according to
the plat recorded in Instrument No. D219019593, Official Public Records, Tarrant County, Texas, and being more
particularly described as follows:
COMMENCING at a mag nail found for the northwest corner of Block 10, K.M. Van Zandt's Addition, an addition to
the City of Fort Worth according to the plat recorded in Volume 106, Page 118, Deed Records, Tarrant County,
Texas, and being in the intersection of the east right-of-way line of Currie Street (a 60-foot right-of-way), and the
south right-of-way line of West 6th Street (an 80-foot right-of-way);
THENCE South 89047'09" East, along the said south right-of-way line, at a distance of 99.94 feet passing a 5/8-inch
iron rod found at the northwest corner of said Lot 8R, and continuing in all a total distance of 122.28 feet to the
POINT OF BEGINNING;
THENCE South 89047'09" East, continuing along the said south right-of-way line, a distance of 36.00 feet to a point
for corner, from which a 1/2-inch iron rod with "HUITT ZOLLARS" cap found for the northeast corner of said Lot 4R
bears South 89e47'09" East, a distance of 191.73 feet;
THENCE South 00°00'00" East, departing the said south right-of-way line, a distance of 13.91 feet to a point for
corner;
THENCE North 90°00'00" East, a distance of 128.00 feet to a point for corner;
THENCE South 00°00'00" East, a distance of 36.00 feet to a point for corner;
THENCE North 90°00'00" West, a distance of 164.00 feet to a point for corner;
THENCE North 00000'00" East, a distance of 50.05 feet to the POINT OF BEGINNING and containing 6,407 square
feet or 0.1471 acres of land, more or less.
NOTES:
Bearing system based on the Texas Coordinate System of 1983 (2011 adjustment), North Central Zone (4202).
A survey plat of even survey date herewith accompanies this metes and bounds description.
The undersigned, Registered Professional Land Surveyor, hereby certifies that foregoing description accurately sets
out the metes and bounds of the maintenance agreement tract.
STORM WATER FACILITY
MAINTENANCE AGREEMENT
=
%,� C,�,.-.•--
WILLIAM BUSSELL SURVEY
ABSTRACT NO. 151
�P�E,•G� E.•r•
JOSHUA D. WARGO"
CO a %
CITY OF FORT WORTH
REGISTERED PROFESSIONAL
*�' •.
...:.................
TARRANT COUNTY TEXAS
LAND SURVEYOR NO. 6391
JOSHUA D. WARGO
CHERRY STREET
..............................
UN
UNIT 11 SUITE 1300
• ,06391�FORT
KidpwOHorn
WORTH, TEXAS 76102
`9 • OF ESS��.P•i�
801
Cherry
Street, Unit 11,
# 1300
Tel. No.
(817) 335-6511
PH. 817-335-6511
�� •S •U R v �y
Fort Worth, Texas 76102 FIRM # 10194040 www.klmley-horn.com
josh.wargo@kimley-horn.eom
Sale
I
Drawnbv Chocked by
I
Date
I I
ProectNo.
oat No.
11
N/A
CRG JDW
5/30/2023
061313300
OF 2
GENSHEIMER, RILEY 5/30/2023 3:56 PM KAFTW SURVEY\061313300-GOLDENROD WEST 7TH ST MF\DWG\061313300-GOLDENROD WEST 7TH_DETENTION EASEMENT.DWG
LEGEND
P.O.C. = POINT OF COMMENCING
P.O.B. = POINT OF BEGINNING
IRFC = IRON ROD W/CAP FOUND
IRF = IRON ROD FOUND
P.O.C.
MNF
S89047'09"E 122.28'
99.94'
5/8"IRF 1
10 9
I
W
BLO K 10
LVNDTS
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K.M. VAN 2nd
00-0
ADDITION
VOLUME 103, PAGE 118
(n oil
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1 11 12
BLOCK 10
K.M. VAN ZANDTS 2nd
ADD[ I -ION
VOLUME 10b, PAGE 118
1
NOTES:
— NORTH
W 6TH STREET
80' RIGHT-OF-WAY 0 25 50
VOL. 106, PG. 117 -
P.O.B. GRAPHIC SCALE IN FEET
1/2" IRFC "HUITT
ZOLLARS"
L1 S89°47'09"E 191.73'
L3
0.1471 ACRES
ns
_- 6,407 SQ. FT.
1 1
L5 �
o" i oN
0 Y o
LOT 4R, BLOCK 10
ES N O z 0 F
K.M. VAN ZANDTS 2nd ADDITION
LU o o m o o
I INST. NO. D219019593 1
LZ 0z❑0
a Z ~O > a
I LINE TABLE 1
J J V Z
I NO. BEARING LENGTH
L1 S89°47'09"E 36.00'
L2 SOO-00'00"E 13.91'
LOT 8R, BLOCK 10
L3 N90°00'00"E 128.00'
K.M. VAN ZANDTS
I 1
— 2nd ADDITION
L4 Soo°00'00"E 36.00'
INST. NO.
L5 N90°00'00"W 164.00'
D219019593
I
L6 NOO°00'00"E 50.05,
Bearing system based on the Texas Coordinate System of 1983 (2011 adjustment), North Central Zone (4202).
A metes and bounds description of even survey date herewith accompanies this survey plat.
The undersigned, Registered Professional Land Surveyor, hereby certifies that this survey plat accurately sets out
the metes and bounds of the maintenance agreement tract.
STORM WATER FACILITY
MAINTENANCE AGREEMENT
WILLIAM BUSSELL SURVEY
L�.�,,.-- '(E OF ABSTRACT NO. 151
P:•••••GISTF
JOSHUA D. WARGO' * ; �a •: CITY OF FORT WORTH
REGISTERED PROFESSIONAL .....TARRANT COUNTY, TEXAS
......
LAND SURVEYOR NO. 6391 JOSHUA D. WARGO
801 CHERRY STREET •••°•••••••••'•'•••••'•••'•�••� le H®rn
UNIT 11 SUITE 1300 • ,0 6391FORT WORTH, TEXAS 76102 9 •�QF ESS���P•��601 Kim
t,11, # 950 Tel. No. (817) 335-6511
PH. 817-335-6511 �GQ•••S •U R v �y Fort Worth, Texas 76102 FIRM # 10194040 www.kimley-horn.com
josh.wargo@kimley-horn.com Scale�I Drawnbv Checked by Date I ProectNo, I ee o
ill= 50' CRG JDW 5/30/2023 061313300 1 OF 2 -
GENSHEIMER, RILEY 5130/20233:56 PM K:%FTVV SURVEY\061313300-GOLDENROD WEST 7TH ST MF\DV1)G\061313300-GOLDENROD ST 7TH_6 YENTION EASEMENT.DWG
EXHIBIT "B"
DESIGN PLAN AND SPECIFICATIONS
STORMWATER FACILITY MAINTENANCE AGREEMENT
Rev. 03/01/2022 BN
GRAPHIC SCALE IN FEET
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0
Oldcastle Infrastructure
0 A CRH COMPANY
Detention, Retention,
and Infiltration.
StormCapture°
Modular Stormwater Management System
For Infiltration, Detention, Retention,
Treatment and Harvesting.
Same -day staging and installation.
Easily customize design footprint to
optimize and meet any she need.
StormCapture System
Backfill Requirements
Modules are typically backfilled with existing site
materials to save time and money.
Custom Sizes
Available in internal heights from 2'to 14'to best -fit
site needs.
Design Assistance
Let our professionals help design and optimize for
your specific needs.
Easy and Safe to Install
Industry leading strength within a system that
is not unnecessarily complicated design makes
StormCapture safer, easier and faster with minimal
handling.
Large Storage Capacity
Smaller system footprint for greater design flexibility
Modular Design
Precast concrete modules measure 8' wide by 16'
long OD, (7' x 15' ID), with customizable heights.
Traffic Loading
Industry leading 6" minimum cover requirement.
Treatment Train
Easily integrated with pre-treatment, post -treatment,
or both to meet any site requirements.
r
Industry leading minimum cover requirements
makes construction sequencing easier.
StormCapture Advantages
Fast Service
Get help from our national engineering team with
layouts and specifications to meet your project's
requirements.
Easy installation
Highly competitive installation and maintenance costs
Structurally Superior
Designed to the latest codes for HS-2o-44 (full
truckload plus Impact).
Maintenance Friendly
The system is maintainable for long-term
sustainability.
LID
Ideal for Low -Impact Development (LID).
LEED
Eligible for LEED v4.1 credits. Talk to your sales
representative for more information.
Simple design improves installation
safety and reduces time and handling.
Applications
From a simple detention system that slows down runoff and prevents storm drain overloading, to a
stormwater treatment system that improves water quality, StormCapture offers a total stormwater
management system for any job site. With numerous options for infiltration, detention, retention,
treatment and harvesting, StormCapture is the solution for your stormwater management needs.
Let us show you how we can design and customize a solution for you.
DETENTION
Provides cost-effective, site -specific applications where
stormwater needs to be detained and then discharged at
a controlled rate.
t outlet
CISTERNS
Provides space -efficient and sustainable long-
term storage for harvested storm and rain water.
StormCapture cisterns are available as single modules
for smaller applications, as well as mufti -module
systems for storage solutions up to hundreds of
thousands of gallons.
!sting Equipment
Mth Sanitation,
,sand Commis
HARVESTING
Harvesting systems enable the collection, storage, cleaning, and
recycling of stormwater and greywater to reduce or replace the
consumption of municipal potable water. StormCapture provides
space -efficient and sustainable long-term storage for harvested
storm and rainwater.
INFILTRATION
Eliminate the issues created with discharging stormwater
offshe by using a StormCapture exfiltration system to
infiltrate stormwater into the soil for natural treatment
and to replenish local aquifers. In applications where
soils are conducive to the natural infiltration process,
StormCapture exfiltration systems are an effective,
efficient and environmentally -sound choice.
RETENTION
Provides efficient rain water retention before controlled
discharge into a storm drain system by allowing retention
to be placed under parking lots and roadways with very
little cover, as well as in non -traffic areas. StormCapture
retention systems are available as single modules for
smaller applications, as well as multi -module systems for
storage solutions up to hundreds of thousands of gallons.
TREATMENT
Stormwater treatment options such as pre-treatment,
post -treatment, oil water separators and sand filters are
available as stand-alone systems, or may be Integrated
with StormCapture. These treatment units prevent
contaminants from entering water systems and allow
for cleaner discharge and/or harvesting of stormwater.
PERMECAPTURE
Combines the advantages and versatility of precast
modules with the aesthetics and performance of
permeable, interlocking pavers, providing a stand
alone, low -maintenance, low -impact development
solution for stormwater retention, detention, reuse and
ground water recharge.
1 pmo�dulk"s
Permeable Inted.W.g
Concrete Pavers
i
I
I
Medules with
HydmParis'
StormCapture Configurations
sC7
Single piece modules can be used for applications
from 2'to 7'tall and are typically installed on
minimally compacted gravel base. Appropriate for
cisterns, infiltration, detention and retention systems.
Can be configured as a base with a top slab for
detention or a top -only for infiltration.
SC2
Two piece modules can be used for applications
from 6'to 14'tall for maximum storage capacity
in a condensed footprint. Appropriate for cisterns,
infiltration, detention and retention systems. SC2
modules are typically installed on compacted native
subgrade.
LINK SLAB"
Unique design allows for significant reduction in
the quantity of modules and associated costs,
while providing maximum storage capacity. Can be
used with both SC1 and SC2 design configurations
(diagram shows SC2 only).
0
Module Sizes & Capacities
INSIDE DIMENSIONS (FT)
7xl5x2
7x15x3
7x15x4
7x15x5
7x15x6
7xl5x7
7x15x8
CAPACITY RANGE (FT3)
210-212
315-325
420-442 l
525-559
630-678
735-793
840.910
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Endless Opportunities
INSIDE DIMENSIONS (FT)
7x15x9
7x15xl0
7xl 5x11
7xl 5x12
7x15x13
7xl 5x14
Visit oldcastleinfrastructure.com to learn more about StormCapture, or design
your StormCapture solution at stortncapturedesign.com.
CAPACITY RANGE (FT3)
945-1,027
1,050.1,140
1,155.1,257
1,260 -1,374
1,365 -1,491
1,470 -1,608
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 MAINTENANCEANSPECTION
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 9
Rev. 03/01/2022 BN
0 Oldcastle Infrastructure"
A CRH COMPANY
STORMCAPTURE 0
Inspection and Maintenance Guide
0
0 Water
Description
The StormCapture®system is an underground, modular, structural precast concrete storage system for stormwater
detention, retention, infiltration, harvesting and reuse, and water quality volume storage. The system's modular
design utilizes multiple standard precast concrete units with inside dimensions of 7 feet by 15 feet (outside
dimensions of 8 feet by 16 feet) to form an underground storage system. The inside height of the StormCapture
system can range from 2 feet to 14 feet. This modular design provides limitless configuration options for site -
specific layouts.
StormCapture components can be provided as either open -bottom modules to promote infiltration or closed -
bottom modules for detention. In some cases, StormCapture modules can be placed in a checkerboard
configuration for an even more efficient design. A Link Slab, with a footprint of 9 feet by 17 feet, is then used to
bridge each space without a module.
The standard StormCapture design incorporates lateral and longitudinal passageways between modules to
accommodate internal stormwater conveyance throughout the system. These passageways may be classified
as either a "window configuration" with standard 12-inch tall sediment baffles extending up from the floor of the
module to the bottom of the window, or a "doorway configuration" without the sediment baffles. The function and
drainage rate of a StormCapture system depends on site -specific conditions and requirements.
Stormwater typically enters the StormCapture system through an inlet pipe. Grated inlets can also be used for
direct discharge into the system. TheStormCapture system is rated for H-20 traffic loading with limited cover.
Higher load requirements can also be accommodated. In addition, StormCapture systems are typically equipped
with a limited number of maintenance modules that provide access to the system for ongoing inspection and
maintenance.
Function
The StormCapture system is primarily used to manage water quantity by temporarily storing stormwater runoff
from impervious surfaces to prevent flooding, slow down the rate at which stormwater leaves the site, and
reduce receiving stream erosion. In addition, the StormCapture system can be used to capture stormwater runoff
for water quality treatment. Regardless of how the StormCapture system is used, some sedimentation may
occur in the modules during the time water is stored.
Configurations
The configuration of the StormCapture systems may vary, depending on the water quality and/or quantity
requirements of the site. StormCapture configurations for detention, retention/infiltration, and retention/
harvesting are described below.
Detention
StormCapture Detention systems are designed with a closed bottom to detain stormwater runoff for controlled
discharge from the site. This design may incorporate a dead storage sump and a permanent pool of water if the
outlet pipe is higher than the floor elevation. Discharge from the system is typically controlled by an outlet orifice
and/or outlet weir to regulate the rate of stormwater leaving the system. StormCapture Detention systems are
typically designed with silt -tight joints, however when conditions exist that require a StormCapture system to be
watertight, the system may be wrapped in a continuous, impermeable geomembrane liner. If the StormCapture
Detention system includes Link Slabs, a liner must be used to detain water since the chambers under each Link
Slab have no floor slab. In this case, care must be taken by maintenance personnel not to damage the exposed
liner beneath each Link Slab.
Retention/Infiltration
StormCapture Retention/Infiltration systems are designed with an open bottom to allow for the retention of
stormwater onsite through infiltration into the base rock and surrounding soils. For infiltration systems, the
configuration of the base of the StormCapture system may vary, depending on the needs of the site and the
height of the system. Some systems may use modules that have fully open bottoms with no concrete floor,
while other systems may use modules that incorporate floor openings in the base of each module. These are
typically 24-inch by 24-inch openings. For open -bottom systems, concrete splash pads may be installed below
inlet grate openings and pipe inlets to prevent erosion of base rock. A StormCapture Infiltration system may have
an elevated discharge pipe for peak overflow.
Retention/Harvesting
StormCapture Retention/Harvesting systems are similar to detention systems using closed -bottom modules,
but stormwater is typically retained onsite for an extended period of time and later reused for non -potable
applications or irrigation. For rainwater harvesting systems, an impermeable geomembrane liner is typically
installed around the modules to provide a water -tight system.
Inspection and Maintenance Overview
State and local regulations typically require all stormwater management systems to be inspected on a regular
basis and maintained as necessary to ensure performance and protect downstream receiving waters. Inspections
should be used to evaluate the conditions of the system. Based on these inspections, maintenance needs can be
determined. Maintenance needs vary by site and system. Using this Inspection & Maintenance Guide, qualified
maintenance personnel should be able to provide a recommendation for maintenance needs. Requirements
may range from minor activities such as removing trash, debris or pipe blockages to more substantial activities
such as vacuuming and removal of sediment and/or non -draining water. Long-term maintenance is important
to the operation of the system since it prevents excessive pollutant buildup that may limit system performance
by reducing the operating capacity and increasing the potential for scouring of pollutants during periods of high
flow.
Only authorized personnel shall inspect and/or enter a StormCapture system. Personnel must be properly
trained and equipped before entering any underground or confined space structure. Training includes familiarity
with and adherence to any and all local, state and federal regulations governing confined space access and the
operation, inspection, and maintenance of underground structures.
Inspection and Maintenance Frequency
The StormCapture system should be inspected on a regular basis, typically twice per year, and maintained as
required. The maintenance frequency will be driven by the amount of runoff and pollutant loading encountered
by a given system. Local jurisdictions may also dictate inspection and maintenance frequencies.
Inspection Equipment
The following equipment is helpful when conducting StormCapture inspections:
• Recording device (pen and paper form, voice recorder, Pad, etc.)
• Suitable clothing (appropriate footwear, gloves, hardhat, safety glasses, etc.)
• Traffic control equipment (cones, barricades, signage, flagging, etc.)
• Manhole hook or pry bar
• Confined space entry equipment, if needed
• Flashlight
• Tape measure
• Measuring stick or sludge sampler
• Long -handled net (optional)
Inspection Procedures
A typical StormCapture system provides strategically placed access points that may be used for inspection.
StormCapture inspections are usually conducted visually from the ground surface, without entering the unit. This
typically limits inspection to the assessment of sediment depth, water drain down, and general condition of the
modules and components, but a more detailed assessment of structural condition may be conducted during a
maintenance event.
To complete an inspection, safety measures including traffic control should be deployed before the access
covers are removed. Once the covers have been removed, the following items should be inspected and recorded
(see form provided at the end of this document) to determine whether maintenance is required:
• Observe inlet and outlet pipe penetrations for blockage or obstruction.
• If possible, observe internal components like baffles, flow control weirs or orifices, and steps or ladders to
determine whether they are broken, missing, or possibly obstructed.
• Observe, quantify, and record the sediment depths within the modules.
• Retrieve as much floating trash as possible with a long -handled net. If a significant amount of trash remains,
make a note in the Inspection & Maintenance Log.
• For infiltration systems, local regulations may require monitoring of the system to ensure drain down is
occurring within the required permit time period (typically 24 to 72 hours). If this is the case, refer to local
regulations for proper inspection procedure.
Maintenance Indicators
Maintenance should be scheduled if any of the following conditions are identified during the inspection:
• Inlet or outlet piping is blocked or obstructed.
• Internal components are broken, missing, or obstructed.
• Accumulation of more than six inches of sediment on the system floor or in the sump, if applicable.
• Significant accumulation of floating trash and debris that cannot be retrieved with a net.
• The system has not drained completely after it hasn't rained for one to three days, or the drain down does
not meet permit requirements.
• Any hazardous material is observed or reported.
Maintenance Equipment
The following equipment is helpful when conducting StormCapture maintenance:
Suitable clothing (appropriate footwear, gloves, hardhat, safety glasses, etc.)
• Traffic control equipment (cones, barricades, signage, flagging, etc.)
Manhole hook or pry bar
Confined space entry equipment, if needed
Flashlight
Tape measure
• Vacuum truck
Maintenance Procedures
Maintenance should be conducted during dry weather when no flow is entering the system. Confined space entry
is usually required to maintain the StormCapture. Only personnel that are OSHA Confined Space Entry trained and
certified may enter underground structures. Once safety measures such as traffic control have been deployed,
the access covers may be removed and the following activities may be conducted to complete maintenance:
Remove trash and debris using an extension on the end of the boom hose of the vacuum truck. Continue
using the vacuum truck to completely remove accumulated sediment. Some jetting may be necessary to
fully evacuate sediment from the system floor or sump. Jetting is acceptable in systems with solid concrete
floors or base slabs (referred to as closed -bottom systems). However, jetting is not recommended for
open -bottom systems with a gravel foundation since it may cause bedding displacement, undermining of
the foundation, or internal disturbance.
• All material removed from the system during maintenance must be disposed of in accordance with local
regulations. In most cases, the material may be handled in the same manner as disposal of material
removed from sumped catch basins or manholes.
Inspect inlet and outlet pipe penetrations for cracking and other signs of movement that may cause leakage.
• Inspect the concrete splash pads (applicable for open -bottom systems only) for proper function and
placement.
Inspect the system for movement of modules. There should be less than 3/4-inch spacing between
modules.
• Inspect the general interior condition of modules for concrete cracking or deterioration. If the system
consists of horizontal joints as part of the modules, inspect those joints for leakage, displacement or
deterioration.
Be sure to securely replace all access covers, as appropriate, following inspection and/or maintenance. If
the StormCapture modules or any of the system components show significant signs of cracking, spalling, or
deterioration or if there is evidence of excessive differential settlement between modules, contact Oldcastle
Infrastructure at 800-579-8819.
ySt@KO I CIi a 10M; ,
Qet�
'';OR—,� f �tration ❑ RE
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t
,
Inlet or Outlet Blockage or Obstruction
❑ Yes ❑ No
Condition of Internal Components
❑ Good ❑ Damaged ❑ Missing
Sediment Depth Observed
❑ Inches of Sediment:
Notes:
Notes:
Notes:
Trash and Debris Accumulation Notes:
❑ Significant ❑ Not Significant
Drain Down Observations Notes:
❑ Appropriate Time Frame ❑ Inappropriate Time Frame
OUR MARKETS
Oldcastle Infrastructure"' 1
www.oldcastleinfrastructure.com
ncaricOMPANY 1 800-579-8819
ENERGY TRANSPORTATION
ti Water
February 2019 v.]
Exhibit "D"
Stormwater Underground Detention Maintenance Checklist
FREQUENT INSPECTION DATE REPAIRS REPAIRS
REQUIRED MADE
Remove trash and debris
Inspect grates and
structures
Blocked, Clogged outlet
structure
MINOR INSPECTION
Accumulated Silt
Clean outlet, dispose
of blockage offsite
Remove by hand if
Standing Water minor, use vacuum
truck if necessary
Oil is acumulated inside
vault/piping
MAJOR INSPECTION
Structural damage to pipe,
vault, access hatch, ladder
Evidence of Tree root
intrusion
Damaged Outlet Structure
or Inlets
Damaged Pavement,
noticable sinking
Cut and remove roots.
Restore structural
integrity of system
Repair or replace
any damaged
structures in kind.
Replace pavement.
Contact Engineer to
access causes
NOTES