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HomeMy WebLinkAboutContract 61750STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 03/01/2022 BN 1 Date Received: _________________ Permit No.: SWFMA-24-0043 Time Received: _________________ City Secretary No.: ____________ STORMWATER FACILITY MAINTENANCE AGREEMENT WATER QUALITY DEVICES THIS AGREEMENT, made and entered into this ____________ day of________, 2024, by and between Trinity River Group, LP, a Texas limited partnership, 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 a tract of land situated in the Edmund Little Survey, Abstract No. 954, Tarrant County, Texas according to the deed recorded in Document No. D202187719, 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 Stonehawk Northside 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 and its runoff quality within the confines of the Property; and WHEREAS, this Agreement shall run with the land and apply to the Landowner, its successors and assigns. The term “Landowner” shall refer to the then-current legal owner of the Property and/or the Facility as same are herein defined; and WHEREAS, the Landowner has determined that on-site Stormwater Management Facilities to control trash, debris and other floatable materials (“Facility”) should be constructed and maintained on a portion of the Property; and WHEREAS, the City requires that the Facility, whether one or more, as shown on the Plan be constructed and adequately maintained by the Landowner the locations of which are as shown in the attached Exhibit “A” (“Facility Property”); and STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 03/01/2022 BN 2 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 shall adequately construct and maintain the 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 Facility includes all structures required to control the quality of the storm water. Adequate maintenance is herein defined as good working condition so that these facilities are performing their designed functions. Maintenance forms provided by the City, or an equivalent provided by the manufacturer of the Facility, attached to this Agreement as Exhibit “D”, are to be used to establish what good working condition is acceptable to the City. 2.If the Landowner contracts the maintenance of the Facility with a qualified third-party, Landowner shall attach a copy of the contract to this Agreement as Exhibit “E”. 3.The Landowner shall inspect or shall cause to be inspected the Facility at least quarterly, using the form in Exhibit D, and shall be submitted to the City quarterly. The purpose of the inspection is to assure safe and proper functioning of the Facility. The inspection shall cover the entire Facility. 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. The corrections identified in the inspection report must be corrected within the 3-month period in which the next inspection report is required. 4.The Landowner hereby grants permission to the City, its authorized agents and employees, to enter upon the Property to inspect the Facility whenever the City deems necessary. The inspection may involve follow-up on reported deficiencies and/or to respond to citizen complaints. The City shall provide the STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 03/01/2022 BN 3 Landowner copies of the inspection findings and a directive to commence with maintenance and repairs if necessary. 5. In the event the Landowner fails to maintain the Facility 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 to protect public health, safety and welfare and to charge the costs of such maintenance and repairs to the Landowner. It is expressly understood and agreed that the City is under no obligation to routinely maintain or repair the Facility, and in no event shall this Agreement be construed to impose any such obligation on the City, such obligation is the Landowner’s. 6. The Landowner 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 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 fails 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 the county in which the Facility lies, an affidavit identifying the real property to be charged with such lien, stating the amount thereof, and making reference to this Agreement. 7. 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 COVENANTS AND AGREES 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 STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 03/01/2022 BN 4 WHATSOEVER ARISING, OR WHICH MIGHT ARISE, FROM THE FAILURE OF LANDOWNER TO: PROPERLY INSTALL, MAINTAIN AND REPAIR THE FACILITY, OR ANY DAMAGES CAUSED TO PERSON OR PROPERTY DUE TO (1) FLOODING ATTRIBUTED TO THE FACILITY , OR (2) IMPROPER INSTALLATION, MAINTENANCE AND REPAIR OF THE FACILITY , . 8. 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 access to the Facility. 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] Executed this _24 ___ day of_J_u_lY _____ 20 24 CITY OF FORT WORTH Dana Burghdoff(Ju1,2024CDT) Dana Burghdoff Assistant City Manager City of Fort Worth Date: Jul 23, 2024 Approved as to Form and Legality: Matthew Murray Sr. Assistant City Attorney City Attorney's Office Date: Jul 23, 2024 ATTEST: Jannette S. Goodall City Secretary Date: Jul 24, 2024 STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 03/01/2022 BN 1··· LANDOWNER Trinity River Group, LP a Texas limited partnership By: Export Connection, Inc. a ation Its: G 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 Owen (Jul 23, 202412:15 CDT) Rebecca Owen Planning Manager Date: Jul 23, 2024 5 STATE OF TEXAS COUNTY OF TARRANT This instrument was acknowledged before me on the 23rd of July, 2024 by Dana Burghdoff, Assistant City Manager of the City of Fort Worth, on behalf of the City of Fort Worth. � -� lr�/�f��!�-� /�-����—���c� O,�p,RY/'(�e, WENDY L BEARDSLEE _ � Notary Public * � * STATE OF TEXAS Ny oV�e Notary I.D. 13323719-3 My Comm. Exp. July 28, 2025 LANDOWNER STATE OF �QC�LS COUNTY OF �Q�((��� Notary Public, State of Texas BEFORE ME, the undersigned authority, a Notary Public in and for the State of �C��.l.� , on this day personally appeared Jer� Bodiford President, known to me to be the person whose name is subscribed to the foregoing in,strument, and acknowledged to me that he/she executed the same for the purposes and consideration therein expressed, as the act and deed of Trinity River Group, LP, a Texas limited partnership, and in the capacity therein stated. GIVEN LTNDER MY HAND AND SEAL OF OFFICE this �L9�� day of ���A.�..R-.� � � 2a oZ� ,�`"��'"8� Sarah E. Baker ,�,��NOtary PubliC, StatE Of texa5 � Comm Expires 03-26-2026 'Fo�� NoWry IO 12481926-0 STORMWATEE2 FACILITY MAINTENANCE AGREEMENT Rev. 03/17//2022 BN � � � ���.�- No blic, State of � EXHIBIT "A" INSERT LEGAL DESCRIPTION STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 11 /17/2016 LEGEND — — — — PROPERN LINE ABSTRACT LINE OHE — OVERHEADELECTRIC � � � DRAINAGE EASEMENT � �� EXISTING PIPELINE X FENCE LINE JJ POWER POLE • FOUNDMONUMENT O CALCULATEDCORNER BEARING CHANGE EXHIBIT "A" O�. O�� ��\O� �\ / � � ��P / �G' �1P' / / � � � � / / � EDMUND LITTLE SURL'EY ABSTRACT NO. 9�-! TARRANTCOUNTY, TEXAS DRAINAGE EASEMENT � AREA = 810 SQUARE FEET / (0.019 ACRES) FOUND 1/2" P�B IRON ROD NAD83 (4202) ,�� / N:6970119.31 � N 69°13'56" E: 2329234.95 �� �M w 332.87' (TIE) I I� l -�I I I C� � � � � TOTAL NET ACRES: 3.400 ACRES oi � (148 083 SQ. FEET) � � � � � SAMUEL K SMITH � SUXVEY ABSTRACT NO. 1-117 T.9XXANT COUNTY, TF,XAS TEXAS ELECTRIC SERVICE COMPANY 8.879 ACRE TRACT TRACT NO. 1 VOL. 2752, PG. 122 D.R.T.C. Z j U K rN � TOTAL ACRES: 6.100 ACRES � LINE TABLE (265,698 SQ. FEET) � LINE# BEARING DISTANCE I TRINITY RIVER GROUP, LP o RIVERSIDE RECREATION ADDITION � �� N 33°a9�zr� e sz.ss� W. bV. bVHEAT pLOT 1, BLOCK 1 0> �z ssa°zo�s�^e ta.00� SURVEY CABINET B, SLIDE 2613 � �3 S 33�39'21" W sz.as� ABSTIL9CT N0. P.R.T.C.T. !/-1- COUNTY CLERK DOC. D203240176 �a N 56°20'S7" W ia.00� D.R.T.C.T. FOUND 1/2" IRON ROD � � � / TARRANTCOUNTY WATER CONTROLANDIMPROVEMENT — � DISTRICT N0. 1 TRACT NO. 2 VOL. 2401, PG. 32 ~ — — — — D.R.T.C. TRINITY RIVER THE POINT OF BEGINNING IS LOCATED APPROXIMATELY 2 MILES NORTHEAST OF FORT WORTH, TEXAS i= __=—=� NOTES: 1. BEARINGS, DISTANCES, AREAAND COORDINATES SHOWN HEREON ARE CORRELATED TO THE TEXAS COORDINATE SYSTEM OF 1983, TEXAS NORTH CENTR4L ZONE (4202). ALL BEARINGS AND DISTANCES SHOWN ARE GRID. 2. LATITUDE & LONGITUDE ARE NAD 83 DECIMAL GEOGR4PHIC. 3. THIS SURVEY WAS PERFORMED WITHOUT THE BENEFIT OF A TITLE REPORI il y F'cG�� RF , .:j,...:...�......�.�.�....0..,.. �..i:�. ;' AARON P:BOHLS � ` .. `����.'O,p06517o�Q,? „g/I ��� SURV�-�.•'�,.-i; � � 06/12/2024 RAA ON P. BOHLS TEXAS R.P.L.S. N0. 6517 DATE STONEHAWK CAPITAL PARTNERS, LLC 1500 E. NORTHSIDE DRIVE TRINITY RIVER GROUP, LP DRAINAGE EASEMENT 1 O6/O5/24 NH ADJUSTED DRAINAGE EASEMENT APB # DATE BV: DESCRIPTION CHK PROJECT NO. 10701 TBPELS FIRM# 10194245 �TRANSGLOBAL 201 West Wall Street, Suite 325 5 F R V i c¢ s << c Midland, TX 79701 (817)5231180 — Fax(817)5231181 SITUATED IN EDMUND LITTIE SURVEY ABSTRACT NO. 954 TARRANT COUNTY, TEXAS DRAWN BY: NH DATE: 03/29/24 DWG. NO. CHECKED BY: APB DATE: 03/29/24 10701_DRAINAGE EASEMENT REV1 SCALE: 1"=100' 1 OF 2 REV. � EXHIBIT "A" METES AND BOUNDS DESCRIPTION BEING A DRAINAGE EASEMENT SITUATED IN THE EDMUND LITTLE SURVEY, ABSTRACT NO. 954, TARRANT COUNTY, TEXAS AND BEING A PART OF THAT TRACT OF LAND CONVEYED TO TRINITY RIVER GROUP, LP, RECORDED IN COUNTY CLERK DOCUMENT D203240176, DEED RECORDS, TARRANT, COUNTY, TEXAS. SAID EASEMENT BEING MORE PARTICULARLY DESCRIBED AS FOLLOWS: BEGINNING AT A POINT (N: 6970119.31, E: 2329234.95) FROM WHICH A FOUND 1/2" IRON ROD BEARS N 69°13'56" W, A DISTANCE OF 332.87 FEET (TIE); THENCE N 33°39'21" E, A DISTANCE OF 62.35 FEET TO A POINT; THENCE S 56°20'57" E, A DISTANCE OF 13.00 FEET TO A POINT; THENCE S 33°39'21" W, A DISTANCE OF 62.35 FEET TO A POINT, FROM WHICH A FOUND 1/2" IRON ROD BEARS S 29°31'40" W, A DISTANCE OF 231.91 FEET (TIE); THENCE N 56°20'57" W, A DISTANCE OF 13.00 FEET TO THE POINT OF BEGINNING. SAID EASEMENT CONTAINING A TOTAL AREA OF 810 SQUARE FEET FEET OR 0.019 ACRES IN THE EDMUND LITTLE SURVEY. NOTES: 1. BEARINGS, DISTANCES, AREAAND COORDINATES SHOWN HEREON ARE CORRELATED TO THE TEXAS COORDINATE SYSTEM OF 1983, TEXAS NORTH CENTR4L ZONE (4202). ALL BEARINGS AND DISTANCES SHOWN ARE GRID. 2. LATITUDE & LONGITUDE ARE NAD 83 DECIMAL GEOGR4PHIC. 3. THIS SURVEY WAS PERFORMED WITHOUT THE BENEFIT OF A TITLE REPORI STONEHAWK CAPITAL PARTNERS, LLC 1500 E. NORTHSIDE DRIVE TRINITY RIVER GROUP, LP DRAINAGE EASEMENT 1 O6/O5/24 NH ADJUSTED DRAINAGE EASEMENT APB # DATE BV: DESCRIPTION CHK PROJECT NO. 10701 TBPELS FIRM# 10194245 �TRANSGLOBAL 201 West Wall Street, Suite 325 5 F R V i c¢ s << c Midland, TX 79701 (817)5231180 — Fax(817)5231181 SITUATED IN EDMUND LITTIE SURVEY ABSTRACT NO. 954 TARRANT COUNTY, TEXAS DRAWN BY: NH DATE: 03/29/24 DWG. NO. CHECKED BY: APB DATE: 03/29/24 10701_DRAINAGE EASEMENT REV1 SCALE: 1"=100' 2 OF 2 REV. � STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 03/17//2022 BN 7 EXHIBIT B This exhibit specifies design and maintenance standards for a structural water quality device (WQ device) located below ground as part of the storm drain network when installed as a part of a development requiring a Stormwater Facilities Maintenance Agreement. The requirements below are in addition to all applicable City’s iSWM requirements and should be made part of the Stormwater Facilities Maintenance Agreement obligating the property owner to maintain the until as described in the City’s iSWM Criteria Manual, Section 5.5. Additional guidance for WQ devices can be obtained from the NCTCOG iSWM Technical Manual, Site Development Controls chapter. 1). The WQ device will need to be certified as meeting applicable City or Tarrant Regional Water District (TRWD) water quality performance specifications. Certifications will be accepted from the Technology Acceptance Reciprocity Partnership (TARP), Technology Assessment Protocol Ecology (TAPE), or other third party testing services to the satisfaction of the SWM/TPW City of Fort Worth. 2). The engineer shall provide the City spreadsheets and/or output from specialized vendor software used to calculate water quality treatment discharges. 3). The engineer shall provide the City electronic CAD (or equivalent) shop drawings of the WQ device. 4). The lowest depth of BMP invert from ground surface shall be no more than 25 feet. Deeper units will require prior approval from the City to ensure that the unit is realistically maintainable by the property owner. 5). Clean out ports and manholes should be designed to allow manual confined entry of a person within the unit, and should have a minimum inner diameter manhole opening of 30 inches. 6). The WQ device itself plus an additional 10 feet perimeter buffer around the WQ device shall be shown as permanent private drainage easement. Additional access for maintenance equipment shall be provided from public Right-of-Way point of entry. WQ devices requiring vactor trucks must have a 20 feet wide access pathway. The City’s SWM Department should be consulted for easement requirements if other type of equipment will be used by the property owner to maintain the device. 7). The engineer shall provide structural requirement of BMP unit, and report from a structural engineer with Texas PE license if vault of WQ device or any other part of WQ device is to buried over _25 feet below ground. 8). Engineer shall provide the Operations & Maintenance manual which includes how the unit operates, frequency of inspection and removal of captured debris. Forms for required maintenance from the manufacturer shall be attached to this agreement as Exhibit D. 9). 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A oo�o�' � F xR �£�� � �Q � � � �� £ �' �M�# �„ o g;Fnog s� �F� � n� S.Y'��� aFggg m"sEp�3 a�a� £�= o £ • 4 £ � 5 A� o Q m :¢o°o - 3n k: � u�. �_,z�qa, ?b£-o�m -^',E a"';� ? y �F" `i ?o '€ � x-�?�S ' - " '"s ��;e s'o; £�: �f�= "�'�n a°3z £ x� � �. ms$'mmos p o '^ ^C^£ 5�, £� 4 �_ : o ^ STONEHAWK NORTHSIDE 1500 NORTHSIDE FORT WORTM, TEXAS � � � O O❑DO�b ; I I , 8 ^ � c F s f � � ' � � m g Kimley>>> Horn I � I -/ I I I" '"Ie I I"al 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. Preventive Maintenance/Insnection 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 system's primary components. 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. C=::: NTECH° ENGINEERED SOLUTIONS Modular Wetlands° Linear Operation & Maintenance Manual � _..� - � M O D U L A R WETLANDS MODULAR WETLANDSO LINEAR OPERATION & MAINTENANCE MANUAL TABLE OF CONTENTS Overview ....................................... Inspection Summary ...................... Inspection Process ......................... Maintenance Indicators ................. Inspection Process ......................... Maintenance Summary ................. Pretreatment Chamber Prefilter Cartridge ....... Biofiltration Chamber . Discharge Chamber .... Inspection Report .......................... Cleaning and Maintenance Report. .3 .4 .5 .6 .7 .8 .9 10 11 12 13 14 � OVERVIEW The Modular Wetlands� Linear Biofilter is designed to remove high levels of trash, debris, sediments, nutrients, metals, and hydrocarbons. Its simple design allows for quick and easy installation. The system is housed in a standard precast structure and can be installed at various depths to meet site-specific conditions. INTRODUCTIOIV This is the Modular Wetlands Linear Biofilter operation and maintenance manual. Before starting, read the instructions and equipment lists closely. It is important to follow all necessary safety procedures associated with state and local regulations. Some steps required confined space entry. Please contact Contech for more information on pre-authorized third party contractors who can provide installation services in your area. For a list of service providers in your area please visit: www.conteches.com/maintenance. Vertical Underdrain Biofiltration Chamber � Pretreatment Chamber � %tiow� �� - � �: : �_ : .k � • � Discharger � Chamber �: �` T .� ' �' .+�� ?���� �G= - ----� . ,��,�Y{.;a� �. �-:_� -_.�;.�... �. � �,�: s Biofiltration Media � � ., .� � --- � Flow Control , ,�,: Riser ��f - -- �Utf�ow �_ � 3 Prefilter Box �. IIVSTRUCTIOIVS INSPECTION SUMMARY Stormwater regulations require BMPs be inspected and maintained to ensure they are operating as designed to allow for effective pollutant removal and provide protection to receiving water bodies. It is recommended that inspections be performed multiple times during the first year to assess the site specific loading conditions. The first year of inspections can be used to set inspection and maintenance intervals for subsequent years to ensure appropriate maintenance is provided. Inspect pre-treatment, biofiltration, and discharge chambers an average of once every six to twelve months. Varies based on site specific and local conditions. Average inspection time is approximately 15 minutes. Always ensure appropriate safety protocol and procedures are followed. The following is a list of equipment required to allow for simple and effective inspection of the Modular Wetlands Linear: • Modular Wetlands Linear Inspection Form • Flashlight • Manhole hook or appropriate tools to remove access hatches and covers • Appropriate traffic control signage and procedures • Measuring pole and/or tape measure • Protective clothing and eye protection • 7/16" open or closed ended wrench • Large permanent black marker (initial inspections only - first year) Note: entering a confined space requires appropriate safety and certification. It is generally not required for routine inspections of the system IIVSPECTION AND MAINTEIVANCE NOTES 1. Following maintenance and/or inspection, it is recommended that the maintenance operator prepare a maintenance/inspection record. The record should include any maintenance activities performed, amount and description of debris collected, and condition of the system and its various filter mechanisms. 2. The owner should keep maintenance/inspection record(s) for a minimum of five years from the date of maintenance. These records should be made available to the governing municipality for inspection upon request at any time. 3. Transport all debris, trash, organics, and sediments to approved facility for disposal in accordance with local and state requirements. 4. Entry into chambers may require confined space training based on state and local regulations. 5. No fertilizer shall be used in the biofiltration chamber. 6. Irrigation should be provided as recommended by manufacturer and/or landscape architect. Amount of irrigation required is dependent on plant species. Some plants may not require irrigation after initial establishment. � IIVSPECTION PROCESS 1. Prepare the inspection form by writing in the necessary information including project name, location, date & time, unit number and other information (see inspection form). 2. Observe the inside of the system through the access covers. If minimal light is available and vision into the unit is impaired, utilize a flashlight to see inside the system and all of its chambers. 3. Look for any out of the ordinary obstructions in the inflow pipe, pre-treatment chamber, biofiltration chamber, discharge chamber or outflow pipe. Write down any observations on the inspection form. 4. Through observation and/or digital photographs, estimate the amount of trash, debris accumulated in the pre-treatment chamber. Utilizing a tape measure or measuring stick, estimate the amount of sediment in this chamber. Record this depth on the inspection form. 5. Through visual observation, inspect the condition of the pre-filter cartridges. Look for excessive build-up of sediment on the cartridges, any build-up on the tops of the cartridges, or clogging of the holes. Record this information on the inspection form. The prefilter cartridges can be further inspected by removing the cartridge tops and assessing the color of the BioMediaGREEN filter cubes (requires entry into pre-treatment chamber - see notes previous notes regarding confined space entry). Record the color of the material. New material is a light green color. As the media becomes clogged, it will turn darker in color, eventually becoming dark brown or black. The closer to black the media is the higher percentage that the media is exhausted and is in need of replacement. New Exhausted BioMediaGREEN BioMediaGREEN 0% 85%T 100% � � � _� -' � � � �'����•. - _•_a � , '�' . } ,�-;;' - ..' . .' � � . . �, r � � : '� *�rtl. �' , ,_ j- ' _ t •, • ., . � � .�i •L �t , , � �'� ,_�_- ' ' ��_� � - _- _ . '--*�� :� X,. �1' y . �_ - �, _ _ . �__ i�-, �;--_ �� ti�!•� -e ''� ' -- --_ ' - ' -' � - - • �� �*� T'.�, '•��R � ' � �.-� � � �` } :��.� r � � •'T'^'4� ~ ... + - - � � # �' '1 ��r f�. € • � J � �J►! � . ' t � _ ' F _F � � '� � � � � � 'F. i r� . . � . . }�. T^ . � - • ' �'+' •ft�•i F��`"' �.� � - , . . � . , � � � + � .Ji��•� �. � ��� '+,;•. . _ _;. .�_, � 4 � _ � � i':'..� - — — _��.., ��� , ���•' � C 7 4 # � . �� F'�, w " f ` - - —���� The biofiltration chamber is generally maintenance-free due to the system's advanced pre-treatment chamber. For units which have open planters with vegetation, it is recommended that the vegetation be inspected. Look for any plants that are dead or showing signs of disease or other negative stressors. Record the general health of the plants on the inspection form and indicate through visual observation or digital photographs if trimming of the vegetation is required. The discharge chamber houses the orifice control structure, drain down filter (only in California - older models), and is connected to the outflow pipe. It is important to check to ensure the orifice is in proper operating conditions and free of any obstructions. It is also important to assess the condition of the drain down filter media which utilizes a block form of the BioMediaGREEN. Assess in the same manner as the cubes in the pre- filter cartridge as mentioned above. Generally, the discharge chamber will be clean and free of debris. Inspect the water marks on the side walls. If possible, inspect the discharge chamber during a rain event to assess the amount of flow leaving the system while it is at 100% capacity (pre-treatment chamber water level at peak HGL - top of bypass weir). The water level of the flowing water should be compared to the watermark level on the side walls, which is an indicator of the highest discharge rate the system achieved when initially installed. Record on the form if there is any difference in level from the watermark in inches. � NOTE.� Durinq the first few storms, the water level in the outflow chamber should be observed and a 6" lonq horizontal watermark line drawn (usinq a larqe permanent marker) at the waterlevelin the discharqe cham.ber while the system is operatinq at 100% capacity. The diaqram be%w illustrates where the line should be drawn. This line is a reference point for future inspections of the system. Water level in the discharqe chamber is a function of flow rate and pipe size. Observation of the water level durinq the first few months of operation can be used as a benchmark level for future inspections. The initial mark and all future obseruations shall be made when the system is at �00% capacity (water level at maximum level in the pre-treatment chamber). lf future water levels are be%w this mark when the system is at 100% capacity, this is an indicator that maintenance to the pre-filter cartridqes may ,be needed. 8. Finalize the inspection report for analysis by the maintenance manager to determine if maintenance is required. MAINTEIVANCE INDICATORS Based upon the observations made during inspection, maintenance of the system may be required based on the following indicators: • Missing or damaged internal components or cartridges • Obstructions in the system or its inlet and/or outlet pipes • Excessive accumulation of floatables in the pretreatment chamber in which the length and width of the chamber is fully impacted more than 18". See photo below. • Excessive accumulation of sediment in the pretreatment chamber of more than 6" in depth. • Excessive accumulation of sediment on the BioMediaGREEN media housed within the pretreatment cartridges. The following chart shows photos of the condition of the BioMediaGREEN contained within the pre-filter cartridges. When media is more than 85% clogged, replacement is required. • Excessive accumulation of sediment on the BioMediaGREEN media housed within the pretreatment cartridges. When media is more than 85% clogged, replacement is required. The darker the BioMediaGREEN, the more clogged it is and in need of replacement. � � �� � Wa#er Le�e! � � �Y• : �'�- � � �` �,� � •_- �s_�}"' �- ; .- ���- ��y,�� f , � � � IIVSPECTION PROCESS Excessive accumulation of sediment on the BioMediaGREEN media housed within the drain down filter (California only - older models). The following photos show the condition of the BioMediaGREEN contained within the drain down filter. When media is more than 85% clogged, replacement is required. .F ` � ��� � � . _ .� ;, � � � � ,� � . �' � � � � � � � . �.. �:�t. � . � �i � _��.. � � �,.��:_��. �. ■n�����. � �4 • � � �. Overgrown vegetation. � . � � : , � .:�. s � �� . �i[ k �`�"�� �' N i,'�S�I jf �T �'� � r�....� � ' � � � � al� ; t� � ��� � �=: t- , � �::j= a � � r } -f'�� ' �.� � t,� _- "�. �. � ���� ��� ��� � �: r t� �'+. � " ��}. � ' . . +,ry� ' , , r :� ., � _ _ -� � :� �� '-_ M1°� nti�-. . :.A�•- �� . ' ._�'.�s"���.. � '�; rt,��'���' ` r ;;�� - � -,�: . a.,... . �- ' <.. - -'.�'; �. ��, . � ,;�s>: :.w � . ��' _ � �, � ''� t� ::� • - . -:.: � � : =�'� Water level in the discharge chamber during 100% operating capacity (pretreatment chamber water level at max height) is lower than the water mark by 20%. MAINTEIVANCE SUMMARY The time has come to maintain your Modular Wetlands� Linear. All necessary pre-maintenance steps must be carried out before maintenance occurs. Once traffic control has been set up per local and state regulations and access covers have been safely opened, the maintenance process can begin. It should be noted that some maintenance activities require confined space entry. All confined space requirements must be strictly followed before entry into the system. In addition, the following is recommended: • Prepare the maintenance form by writing in the necessary information including project name, location, date & time, unit number and other info (see maintenance form). • Set up all appropriate safety and cleaning equipment. • Ensure traffic control is set up and properly positioned. • Prepared pre-checks (OSHA, safety, confined space entry) are performed. The following is a list of equipment to required for maintenance of the Modular Wetlands" Linear: • Modular Wetlands Linear Maintenance Form • Manhole hook or appropriate tools to access hatches and covers • Protective clothing, flashlight, and eye protection • 7/16" open or closed ended wrench • Vacuum assisted truck with pressure washer • Replacement BioMediaGREEN for pre-filter cartridges if required (order from one of Contech's Maintenance Team members at https://www.conteches.com/maintenance). : MAINTEIVANCE � PRETREATMENT CHAMBER 1. Remove access cover over pre-treatment chamber and position vacuum truck accordingly. 2. With a pressure washer, spray down pollutants accumulated on walls and pre-filter cartridges. 3. Vacuum out pre-treatment chamber and remove all accumulated pollutants including trash, debris, and sediments. Be sure to vacuum the floor until the pervious pavers are visible and clean. 4. If pre-filter cartridges require media replacement, continue to step 5. If not, replace access cover and move to step 1 1. ���'�� � . �,� � �; � �. - � ���;} ' '� �, i . �* .�. ., � �f - . , � f r- - � �-�� �lC •, ' � r 7 ��.�� �� �' , � MAINTEIVANCE � PREFILTER CARTRIDGES 5. After successfully cleaning out the pre-treatment chamber (previous page) enter the pre-treatment chamber. 6. Unscrew the two bolts (circles shown below) holding the lid on each cartridge filter and remove lid. �� � � . � � � � � � � � ,�-. �... ,� � �� � � �� - � � � � � 4 �.�. .�. .; 4.. .. _ 5�1:� �' T r •�y,,,� *� �1` - ■ }' � .'�l�i . � � ���'� ; j��}-�:� � �, }� , w. � � i �+�:__�; �� � . � � �r� r�l �i � f�`���.: i, � �' '� � * �' T�x• �4 .� I w � � �+, � 1 ��� i � ' � i, � �j .,Yr � �. � � ���I ��,r � ._ � � r ' ��� � �lla�. 7. Place the vacuum hose over each individual media filter to suck out filter media. L•: � "�:� �� 4 � r 1 1 ` � Once filter media has been sucked out, use a pressure washer to spray down the inside of the cartridge and it's media cages. Remove cleaned media cages and place to the side. Once removed, the vacuum hose can be inserted into the cartridge to vacuum out any remaining material near the bottom of the cartridge. Reinstall media cages and fill with new media from the manufacturer or outside supplier. Manufacturer will provide specification of inedia and sources to purchase. Utilize the manufacture-provided refilling tray and place on top of the cartridge. Fill the tray with new bulk media and shake down into place. Using your hands, lightly compact the media into each filter cage. Once the cages are full, remove the refilling tray and replace the cartridge top, ensuring bolts are properly tightened. . .._.�� ..�, , ` . r , _. . . . _ . �._ --�4�• � } L'.S' F - ' " � '.3 �: � 1,. � + .`i ' F; , `'' � _ i �• t 2`.�5.�i�#'-=4-�,�r4� +:i+r ' . � ii � �5 '�'' � � 4 i, � . . � � � lli k S� � ��.� S � _ �' . . � I � I � � �� � i 10. Exit the pre-treatment chamber. Replace access hatch or manhole cover. � MAINTEIVANCE � BIOFILTRATION CHAMBER 11. In general, the biofiltration chamber is maintenance-free with the exception of maintaining the vegetation. The Modular Wetlands Linear utilizes vegetation similar to surrounding landscape areas, therefore trim vegetation to match surrounding vegetation. If any plants have died, replace them with new ones. . 4 ��i} ' _ ' 54�' �l'. �� 12. Each vertical under drain on the biofiltration chamber has a removable (threaded cap) that can be taken off to check any blockages or root growth. Once removed, a jetting attachment can be used to clean out the under drain and orifice riser. 13. As with all biofilter systems, at some point the biofiltration media (WetlandMedia) will need to be replaced. Either because of physical clogging of sorptive exhaustion of the media ion exchange capacity (to remove dissolved metals and phosphorous). The general life of this media is 10 to 20 years based on site specific conditions and pollutant loading. Utilize the vacuum truck to vacuum out the media by placing the hose into the chamber. Once all the media is removed use the power washer to spray down all the netting on the outer metal cage. Inspect the netting for any damage or holes. If the netting is damaged it can be repaired or replaced with guidance by the manufacturer. 14. Contact one of Contech's Maintenance Team members at https://www.conteches.com/maintenance to order new WetlandMedia. The quantity of inedia needed can be determined by providing the model number and unit depth. Media will be provided in super sacks for easy installation. Each sack will weigh between 1000 and 2000 Ibs. A lifting apparatus (backhoe, boom truck, or other) is recommended to position the super sack over the biofiltration chamber. Fill the media cages up to the same level as the old media. Replant with vegetation. �� : �� i►�`'` : ,. ' �. � � �_�� ,� �.: - . � �.� � MAINTEIVANCE � DISCHARGE CHAMBER 15. Remove access hatch or manhole cover over discharge chamber. 16. Enter chamber to gain access to the drain down filter. Unlock the locking mechanism and lift up drain down filter housing to remove used BioMediaGREEN filter block as shown below. NOTE: Drain down filter is only found on units installed in California prior to 2023. If no drain down filter is present, skip steps 16 and 17. � .� �� � � , � I - �i,-�aP�y�: ',',� �� —_ � • �7�� 1 s �� .� .� � .s . -. � - _ �i _, *� �'-� ' . •+� .�- 4 .� �f � � .i f 41 7_ 5 � 3 17. Insert a new BioMediaGREEN filter block and lock drain down filter housing back in place. 18. Replace access hatch or manhole cover over discharge chamber. � 12 IVOTES 13 C=::: NTEC H° ENGINEERED SOLUTIONS Project Name Project Address Owner / Management Company Contact Phone ( ) — Inspector Name Date / / Time AM / PM Type of Inspection ❑ Routine ❑ Follow Up ❑ Complaint ❑ Storm Storm Event in Last 72-hours? ❑ No ❑ Yes Weather Condition Additional Notes Inspection Checklist Modular Wetland System Type (Curb, Grate or UG Vault): Size (22', 14' or etc.): Structurallntegrity: Yes No Comments Damage to pre-treatment access cover (manhole cover/grate) or cannot be opened using normal lifting pressure? Damage to discharge chamber access cover (manhole cover/grate) or cannot be opened using normal lifting pressure? Does the MWS unit show signs of structural deterioration (cracks in the wall, damage to frame)? Is the inleVoutlet pipe or drain down pipe damaged or othenvise not functioning properly? Working Condition: Is there evidence of illicit discharge or excessive oil, grease, or other automobile fluids entering and clogging th unit? Is there standing water in inappropriate areas after a dry period? Is the filter insert (if applicable) at capacity and/or is there an accumulation of debris/trash on the shelf system? Does the depth of sediment/trash/debris suggest a blockage of the inflow pipe, bypass or cartridge filter? If yes Depth: specify which one in the comments section. Note depth of accumulation in in pre-treatment chamber. Chamber: Does the cartridge filter media need replacement in pre-treatment chamber and/or discharge chamber? Any signs of improper functioning in the discharge chamber? Note issues in comments section. Other Inspection Items: Is there an accumulation of sedimenUtrash/debris in the wetland media (if applicable)? Is it evident that the plants are alive and healthy (if applicable)? Please note Plant Information below. Is there a septic or foul odor coming from inside the system? Inspection Report Modular Wetlands Linear (clty) (Zlp Code) For Office Use Only (Reviewed By) (Date) Office personnel to complete section to the left. Waste: Yes No Sediment / Silt / Clay Trash / Bags / Bottles Green Waste / Leaves / Foliage Recommended Maintenance No Cleaning Needed Schedule Maintenance as Planned Needs Immediate Maintenance Plant Information Dama e to Plants Plant Re lacement Plant Trimmin Additional Notes: � C=:::NTECH° ENGINEERED SOLUTIONS Project Name Project Address Owner / Management Company Contact Inspector Name Type of Inspection ❑ Routine ❑ Follow Up Weather Condition ❑ Complaint Phone ( ) Date / ❑ Storm Additional Notes Cleaning and Maintenance Report Modular Wetlands Linear (ci�y) (Zip Code) For Office Use Only (Reviewed By) ae Office personnel to complete section to — the left. / Time AM / PM Storm Event in Last 72-hours? ❑ No ❑ Yes Condition of Media Operational Per Site GPS Coordinates Manufacturer / Trash Foliage Sediment Total Debris 25/50/75/100 Manufactures' Map # of Insert Description / Sizing Accumulation Accumulation Accumulation Accumulation (will be changed Specifications @ 75%) (If not, why?) Lat: MW S Catch Basins Lon : MWS Sedimentation Basin Media Filter Condition Plant Condition Drain Down Media Condition Discharge Chamber Condition Drain Down Pipe Condition Inlet and Outlet Pipe Condition Comments: 15 _ � , 1 -� . _� �� . �F'i�� '� � _ �� � � �:� � �, � �` �� - J - .� --, � � ^ �- -�*� .. ��',' �■�•_� . - YT _ - .� . . ' � �� ' � � . .�, # � � , . •� � '.�, �a i .. � 7 � � � C=:::NTECH° ENGINEERED SOLUTIONS OO 2023 CONTECH ENGINEERED SOLUTIONS LLC, A QUIKRETE COMPANY 800-338-1122 W WW. CONTECH ES. COM ALL RIGHTS RESERVED. PRINTED IN THE USA. CONTECH ENGINEERED SOLUTIONS LLC PROVIDES SITE SOLUTIONS FOR THE CIVIL ENGINEERING INDUSTRY. CONTECH'S PORTFOLIO WCLUDES BRIDGES, DRAINAGE, SANITARY SEWER, STORMWATER AND EARTH STABILIZATION PRODUCTS. FOR INFORMATION ON OTHER CONTECH DIVISION OFFERINGS, VISIT CONTECHES.COM OR CALL 800-338-1122. ■ I �• } NOTHING IN THIS CATALOG SHOULD BE CONSTRUED AS A WARRANTY. APPLICATIONS SUGGESTED HEREIN ARE DESCRIBED ONLY TO HELP READERS MAKE THEIR OWN EVALUATIONS AND DEQSIONS, AND ARE NEITHER GUARANTEES NOR WARRANTIES OF SUITABILITY FOR ANY APPLICATION. CONTECH MAKES NO WARRANTY WHATSOEVER, EXPRESS OR IMPLIED, RELATED TO THE APPLICATIONS, MATERIALS, COATINGS, OR PRODUCTS DISCUSSED HEREIN. ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND ALL IMPLIED WARRANTIES OF FITNESS FOR ANY PARTICULAR PURPOSE ARE DISCLAIMED BY CONTECH. SEE CONTECH'S CONDITIONS OF SALE (AVAILABLE AT WWW.CONTECHES.COM/COS) FOR MORE INFORMATION. SUPPORT DRAWWGS AND SPEQFlCATIONS ARE AVAILABLE AT WWW.CONTECHES.COM Modular Wetlands Maintenance Guide 1/2023 EXHIBIT "D" Exhibit "D" Stormwater Structural Maintenance CHECKLIST FREQUENT REPAIRS REPAIRS INSPECTION DATE REQUIRED MADE NOTES Mowin Remove Trash and debris Inspect irrigation s stem o eration Remove grass cli in s Violations Noted MINOR INSPECTION Condition of Pond Amount of silt in ond Amount of silt in flume Amount of ponded water Amount of wetland ve etation Location of Erosion Percent of ve etation Condition of trash uard Location of Erosion MAJOR INSPECTIONS Condition of Stormwater Quality Structure Type of Stormwater Qualit Structure Structure type and Condition Condition of Rip- Ra STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 11 /17/2016 Condition of filtration s stem Berm or Embankment Settlement Location of erosion Evidence of Animals Evidence of Aquatic life Condition of Aeration Foundation STORMWATER FACILITY MAINTENANCE AGREEMENT � O Rev. 11 /17/2016