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HomeMy WebLinkAboutContract 58810Date Received: 2/3/2023 Time Received: 11:07 a.m. Permit No.: SWFMA-22-0095 City Secretary No.: 58810 STORMWATER FACILITY MAINTENANCE AGREEMENT THIS AGREEMENT, made and entered into this 3rd day of February , 2023 , by and between SCP Trinity Land, a Delaware LLC, 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 John Childress Survey, Abstract No, 249 being a portion of Block 6, Post Oak Village, an addition to the City of Fort Worth, Tarrant County, Texas according to the Special Warranty Deed recorded in Instrument No. D222030228, Official Public Records, Tarrant County, Texas, hereinafter called the "Property". WHEREAS, the Landowner is proceeding to build on and develop the Property according to the Site Plan/Subdivision Plan known as Trinity Landing MultifamilX, 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 OFFICIAL RECORD STORMWATER FACILITY MAINTENANCE AGREEMENT CITY SECRETARY Rev. 03/01/2022 BN 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 Clerk of Tarrant County, Texas an affidavit identifying the property to be charged with such lien, stating the amount thereof, and making reference to this Agreement. 6. This Agreement imposes no liability of any kind whatsoever on the City. THE LANDOWNER AGREES TO HOLD THE CITY HARMLESS FROM ANY LIABILITY IN THE EVENT THE FACILITY FAILS TO OPERATE PROPERLY. LANDOWNER COVENANT AND AGREE AND DOES HEREBY INDEMNIFY, HOLD HARMLESS AND DEFEND 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 habitable building shall be erected within the boundaries of the Property in which the Facility is located as outlined on Exhibit "A" but this paragraph shall not preclude construction of other improvements within the boundaries of the Property in which the Facility is located, which do not impede drainage. 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. STORMWATER FACILITY MAINTENANCE AGREEMENT 4 Rev. 03/01/2022 BN Executed this 3rd day of Februa CITY OF FORT WORTH Darla Burghdoff (Feb 1, 202 a 0:28 CST) IVJ Dana Burghdoff Assistant City Manager City of Fort Worth Date: Feb 1, 2023 Approved as to Form and Legality: Thomas Royce Hansen, Assistant City Attorney II City Attorney's Office Date: Feb 1, 2023 d-'N p �b0� F�RT�pdd ATTEST: �o Jannette S. Goodall City Secretary Date: Feb 2, 2023 2023 LANDOWNER SCP TRINITY LAND, A DELAWARE LLC, a Delaware limited liability company By Brandon Hopkins, Vice President -Construction 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. Q, ,I^ Rebecca Diane Owen (Feb 1, 2023 13:38 CST) Rebecca Owen, Planning Manager Development Services Date: Feb 1, 2023 OFFICIAL RECORD CITY SECRETARY FT. WORTH, TX STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 03/01/2022 BN 5 STATE OF TEXAS § COUNTY OF TARRANT § This instrument was acknowledged before me on Feb. 1, 2023 by Dana Burghdoff, Assistant City Manager of the City of Fort Worth, on behalf of the City of Fort Worth. 1�9 BICH SON THI NGUYEN Notary Public STATE OF TEXAS Notary I.D. 133389224 My Comm. Exp. Oct. 13, 2025 LANDOWNER STATE OF I-exaS COUNTY OF Bichson Nguyen Digitally signed by Bichson Nguyen Date: 2023.02.02 08:43:03-06'00' Notary Public, State of Texas E. L11 BEFORE ME, the undersigned authority, a Notary Public in and for the State of -T2XmS , on this day personally appeared Qc'ondon 6pu (name), L a,, LoVn er (title), 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 SO —tc Xli� r l.cntl (entity), a LLG (entity type) and in the capacity therein stated. GIVEN UNDER MY HAND AND SEAL OF OFFICE this 30 day of Sonvve , 20 2.3 4°� ; WILLIAM HUNTER SANDERS z; Notary Public, State of Texas y+e Comm. Expires 02.03-2026 Notary ID 133569645 Notary Public, tate of STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 03/01/2022 BN EXHIBIT "A" INSERT LEGAL DESCRIPTION STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 11 /17/2016 EXHIBIT "A" DRAINAGE EASEMENT SITUATED IN THE JOHN CHILDRESS SURVEY, ABSTRACT No. 251 CITY OF FORT WORTH, TARRANT COUNTY, TEXAS BEING a 0.2738 acre tract of land situated in the John Childress Survey, Abstract No. 249, being a portion of Block 6, Post Oak Village, an addition to the City of Fort Worth, Tarrant County, Texas, as recorded in Volume 388-145, Page 47, Plat Records, Tarrant County, Texas (PRTCT) and being a portion of a called 6.500 acre tract of land described in the Special Warranty deed to SCP Trinity Land, a Delaware LLC, as recorded in Instrument No. D222030228, Official Public Records, Tarrant County, Texas (OPRTCT). Said 0.2738 acre tract being more particularly described by metes and bounds as follows: COMMENCING at a point for the northwest corner of said 6.500 acre tract, the northernmost northeast corner of Lot 1, Block 6, Post Oak Village, an addition to the City of Fort Worth, Tarrant County, Texas, as recorded in Volume 388-184, Page 92, PRTCT, and in the southerly right-of-way line of Trinity Boulevard, a variable width right-of-way, from which a 1/2" iron rod found, bears South 58°45'19" West, a distance of 1.49 feet; THENCE in a southeasterly direction, departing the south right-of-way line of said Trinity Boulevard and with the common line of said 6.500 acre tract and said Lot 1, the following courses and distances: South 27°03'13" East, a distance of 150.00 feet to a point for corner, from which a 1/2" iron rod found bears South 75°32'40" West, a distance of 0.74 feet; South 03°27'45" East, a distance of 139.98 feet to a 3/8" iron rod found (leaning); South 61°59'19" East, a distance of 105.00 feet to the POINT OF BEGINNING, from which a 3/8" iron rod found bears North 15°42'08" West, a distance of 0.22 feet; THENCE over and across said 6.500 acre tract, the following courses and distances: North 05°25'32" East, a distance of 12.05 feet to a point for corner; North 15°08'22" West, a distance of 22.81 feet to a point for corner; North 37°38'22" West, a distance of 34.26 feet to a point for corner; North 08°01'18" East, a distance of 27.66 feet to a point for corner; North 81°58'42" West, a distance of 8.50 feet to a point for corner; North 08°01'18" East, a distance of 20.50 feet to a point for corner; South 81°58'41" East, a distance of 172.00 feet to a point for corner; South 08°01'19" West, a distance of 19.89 feet to a point for corner; South 59°58'42" East, a distance of 79.44 feet to a point for corner; South 14°58'42" East, a distance of 35.73 feet to a point for corner; South 75°16'25" West, a distance of 20.32 feet to a point for corner, from which a 1/2" iron rod found bears North 76°30'31" West, a distance of 37.82 feet; North 15°04'33" West, a distance of 27.04 feet to a point for corner; North 59°45'06" West, a distance of 36.76 feet to a point for corner; South 30°01'18" West, a distance of 10.63 feet to a point for corner; North 59°58'42" West, a distance of 25.31 feet to a point for corner; North 81°58'42" West, a distance of 134.91 feet to a point for corner; South 37°38'22" East, a distance of 16.40 feet to a point for corner; South 15°08'22" East, a distance of 28.36 feet to a point for corner; South 35°41'11" East, a distance of 9.31 feet to a point for corner; South 74°52'11" West, a distance of 22.50 feet to the POINT OF BEGINNING and containing 11,926 Square Feet or 0.2738 Acres of Land, more or less. Lon E. Whitten, RPLS No. 5893 Date: October 6, 2022 ��• .0 F• TF �P,•��STFR• 1 .................. LON E. WHITTEN •� :�0 • 5893�Q:q- �9'• cESS\o �O ��•SUR�� EXHIBIT "A " DRAINAGE EASEMENT SITUATED IN THE JOHN CHILDRESS SURVEY, ABSTRACT NO. 251 IN THE CITY OF FORT WORTH, TARRANT COUNTY, TEXAS 131,'V�' � LEGEND/ABBREVIATIONS �+gI1,M ROW') / - �10' RIGHT—OF—WAY & ESMT IRF IRON ROD FOUND 1 VpR BLED IO GT 27 ENSERCH CORP. 6 1p �a VOL. 7001, PG. 974 CIRF CAPPED IRON ROD FOUND OG# 0? NAD83 (GRID) DRTCT CC# COUNTY CLERK'S N.6,985,041.04 INSTRUMENT NUMBER E.• 2, 407, 816.70 �q 15'x45' SW SELL ESMT. V,v OPRTCT OFFICIAL PUBLIC RECORDS, ---VOL. 388-184, PG. 92 PRTCT $� 51 TARRANT COUNTY, TEXAS 1/2" IRF (DIST) u, � PRTCT PLAT RECORDS, BEARS S 58 45'19" W 1.49' 01 $�0 • TARRANT COUNTY, TEXAS -� L VOL. VOLUME gA PG. PAGE o��'': QQ COMMENCINGPOC POINT OF LOT 1, BLOCK 6 POB POINT OF BEGINNING POST OAK VILLAGE ADDITION BLOCK 6 VOLUME 388-184, PAGE 92 PDST DAK VILLAGE ADDITIDIV PRTCT \ VOLUME 388-145, PAGE 47 PRTCT 1/2" IRF BEARS S 7532'40" W 0.74' 6.500 ACRES SCP TRINITY LAND, A DELAWARE LLC CC# D222030228 _ — — OPRTCT �N � v cn LINE TABLE LINE BEARING DISTANCE L 1 N 05 25'32" E 12.05' L2 N 15.08'22" W 22.81 ' L3 N 373822" W 34.26' L4 N 08701'18" E 27.66' L5 N 8158'42" W 8.50' L6 N 08701'18" E 20.50' L7 S 08*01'19" W 19.89' L8 S 14'58'42" E 35.73' L9 S 75*1625" W 20.32' L 10 N 15704'33" W 27.04' L11 N 59'45'06" W 36.76' L12 S 30'01'18" W 10.63' L 13 N 59 58'42" W 25.31 ' L 14 S 37 3822" E 16.40' L15 S 15 0822" E 28.36' L16 S 3541'11" E 9.31' L 17 S 74 52'11 " W 22.50' R1 3/8" IRF (LEANING) 1-1 (o 58158'41 "E L5 t < QQ 7�s 1y •. N 00' �J VARIABLE WIDTH DRAINAGE EASEMENT 0.2738 ACRES (11, 926 SQ. FT.) 172.00, N 8158'�42., w 134.91 pw 1-7 NAD83 (GRID) / / N: 6, 984, 718.46 E. 2, 407, 986.06 / / �/ 15' SSE l T VOL. 388-184, PG. 92 3/8" IRF BEARS PRTCT N 15'42'08" W 0.22' l l Bearings and coordinates are grid based on the "Texas Coordinate System of 1983, North Central Zone" as determined by GPS observations. The convergence angle at the Point of Beginning is 00'46'49.1 ". All distances have been adjusted to surface using a combined scale factor of 1.0001401174168. n S S9S sr�, CIS F \ ,`3� v Z,7 w 1/2" IRF O 1 N 7630'31" W \ 37.82' LL�]] m m a dvlneeying lendecape arddbc4ire plannkV tbpels registration number: f — 2759 tbpels registration/license number: 10088000 519 east border a r I i n g t o n, t e x a s 7 6 0 1 0 8 1 7 — 4 6 9 — 1 6 7 1 fox: 8 1 7— 2 7 4— 8 7 5 7 w w w. m m a t e x a s. c o m DATE: 10=44=2022 SCALE: 1"= 60' _ DRAWN BY: _ CMS_ CHECKED BY:_ LEA- JOB. NO.: 3508-00-02 EXHIBIT "B" DESIGN PLAN AND SPECIFICATIONS Exhibit "B" /"A), / l 7 il'l i'�il �� / i''� Ads° � � L � _ a �•.. / y ��\���\�\\\\ m '- o A // ��iplolCAD LUrr - f/ II ��I ill I I �I �� ' _ �� — � • ; /' ME F� a 1/I 2 xnm�m �<�''NQ g`-�gmmnAm g�N z A�m�m">znFmo°�m gnz�� n m o �» Ag°zgz g F^xo@mm'A;=o azn ">;9�ma ��g^mN$ �'cimmnio T° aim: °F o� A"�,� m rm anmA o^ mr �� °;AY ,mA H �g gig ^ �;m°o� vQ a a s agcA�� u�A�mo moxa aA a o� _^� yen- A� e e e - m g mxm mT -z���g NBnm�`7Ao8m^�z RN 0 0 8 8 8 0 o AomAA _.� TRINITY LANDING MULTIFAMILY (•] a e — og�m9 - a gNN 3 FORT WORTH, TEXAS ro se - Ain 17 OVERALL GRADING PLAN *No Saved or Proposed Trees are located above or within the SWFMA Boundary Exhibit "B" ® Eno 0 4 0 0 0 4 g 4 'off m� p g 4g 314 gxngo gg_ -maim A gnes ���R 8� 7gmnoApoon" m A gA a~�zo omen`="�zm m�m� Amn lhn. g- 0°p:R° a� �n -°mmzEmmks 8z!m'g = - �m;m 3g mono°4 s 2 g °z�"=°n�';°a=�' "erg o .� A 7���. m — '�gaac ^gin °R Hsggm�R -� a=�n'4Cm �go5.,m �>�o6° �a°gzm "m;A R x 8a - 4m4A� n gam m '� o°"p g o do- a p �g �gA ogAnmRn.'<m8 m= sQsa "'> mYg �o ° "agmm ' Ra"' �oon a o : aIV g n P " ■ "msamo = �� TRINITY LANDING MULTIFAMILY p E- FORT WORTH, TEXAS EROSION CONTROL PLAN m�Fm *No Saved or Proposed Trees are located above or within the SWFMA Boundary Exhibit "B" My,/ for m m — l ti VAV \\ // \ \I` \I\ Q� ��- /�_=_ % r\- / r `III/li //t'///�/� ////\ _ __ _ �- ... L,� ' ; • �� I ---i Jl \\\ yin/ III \\ r i / e A , 77 , 4 mi )� Ivv�vvlvll1 I v v v v v/� 11�- ri���l N` -- ///ice 01 -_dA ='A. •moo �Q � ��amno=A //w// �__'�m � �i l\� / \ \ \ \ � \ v/ I( REM sN mi 8azcn��' m '�'gA'ga -22 o 1 4 TRINITY LANDING MULTIFAMILY CD 3 FORT WORTH, TEXAS os.2m AST 2 _m�Fm° DRAINAGE AREA MAP *No Saved or Proposed Trees are located above or within the SWFMA Boundary Exhibit "B" *No Saved or Proposed Trees are located above or within the SWFMA Boundary Exhibit "B" IN � ssF n N g g' <N� om:mQ m aAom���A?y oA � w d zm'm mnz"�n �Rm�8 � zg7��ao�n2 g ��m sNzzn 8>z..�m�� °o za mk� m�$� s3m z m��� i _ o I y Ej TRINITY LANDING MULTIFAMILY ��gm03 3 FORT WORTH, TEXAS ro �0 3 \ g m AOAm OVERALL STORM PLAN s ^ .Fm w *No Saved or Proposed Trees are located above or within the SWFMA Boundary Exhibit "B" mmmmm NONE Ron ZE MENEM .. ti [[ I� p = I �R 1 zg ^$ / I II _ I I I I / I of H �3 CJ tl _ 1� / I I Amoi= � m � , o8m�T _m RBm�mF o mW - �000m� omQ HT � a msx;s� t B b m m TRINITY LANDING MULTIFAMILY z "Am^ 1a CO 9 g-HE 3_ FORT WORTH, TEXAS cn og - p�pm e'iY� POND PLAN *No Saved or Proposed Trees are located above or within the SWFMA Boundary Exhibit "B" sS $72 "a age " F 8$8'88s gamo P rN 2 m 3 N n a. � N N QQ r�yg. pp "s A a Li S O N V� In A W ni r+ g W 888888888$888x� ado q Q£ w q. y W W W tp Ce V T A N O N' W V S y� FW+ yNi Ip rye1 z� i ££ K zZ ?m oo �g �$ Z z O O � O O I m xl m 0 O O Z p m r 4 O m ®a Z Co n " m �y am�Az� s I �G Qa�g�� IN k m^- I RN Aga �gg�g��Hzg @ 'H �a�$io 4"g 48 g Egg o000000 � �, ou�d 40 _$ a I @g I Fa I � g I 1 I Ac TRINITY LANDING MULTIFAMILY d =� - 3 FORT WORTH TEXAS mi POND DETAILS *No Saved or Proposed Trees are located above or within the SWFMA Boundary Exhibit "B" i Jill Nli�i g I����� I I I �000 111!! !000i� C� .a t �I , 1T m m � © a g z 0 0 O Z r Z h n C O C i h Z O Z m A O �7 a O r TRINITY LANDING MULTIFAMILY yyCa -°� FORT WORTH, TEXAS STORM DETAILS $ Aram 1, 81 9 iA 4 jm Nil *No Saved or Proposed Trees are located above or within the SWFMA Boundary 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 pondibasin returned to original lines and grades shown on the approved engineering plans. In addition, corrective measures are required any time a basin does not drain completely within 72 hours of cessation of inflow. NO STANDING WATER IS ALLOWED in basins designed for dry detention purposes. Accumulated litter, sediment, and debris shall be removed every 6 months or as necessary to maintain proper operation of the basin. Disposal shall be in accordance with federal, state and local regulations. Detention facilities shall be mowed monthly between the months of April and October or anytime vegetation exceeds 12-inches in height. To prevent debris from entering and clogging the downstream storm sewer system a wire mesh screen or similar screening device shall be installed over the outlet until final acceptance. 4. PREVENTIVE MAINTENANCE/INSPECTION Visual inspections of all components will be conducted every 6 months. A log shall be kept of maintenance actions, and inspections. The log should document the condition of the detention system's primary components, mowing, and silt, litter and debris removal dates. Document aeration of the basin bottoms and replanting to prevent the sealing of the basin bottom. Written maintenance and repair records shall be maintained by the party or parties signing the attached Agreement and shall be provided to the City upon request. STORMWATER FACILITY MAINTENANCE AGREEMENT 9 Rev. 03/01/2022 BN Exhibit "C" C NTECK ENGINEERED SOLUTIONS Contech°CMP Detention & Infiltration Maintenance Guide CMP DETENTION SYSTEMS Exhibit "C" ContechO CMP Detention 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. Exhibit "C" Inspection & Maintenance Log Sample Template " Diameter System Location: Anywhere, USA Date Depth of Sediment Accumulated Trash Maintenance Performed Maintenance Personnel Comments 12/01/10 2" None Removed Sediment B. Johnson Installed 03/01/11 1" Some Removed Sediment and Trash B. Johnson Swept parking lot 06/01/11 0" None None 09/01/11 0" Heavy Removed Trash S. Riley 12/01/11 1" None Removed Sediment S. Riley 04/01/12 0" None None S. Riley 04/1 5/01 2 Some Removed Sediment and Trash ACE Environmental Services Exhibit "C" CMP DETENTION SYSTEMS Support C:NTECH� Drawings and specifications are available at www.ContechES.com. ENGINEERED SOLUTIONS 800.338.1122 www.ContechES.com Site -specific support is available from our engineers. ©2014 Contech Engineered Solutions LLC Contech Engineered Solutions LLC provides site solutions for the civil engineering industry. Contech's portfolio includes bridges, drainage, sanitary sewer, stormwater, earth stabilization and wastewater treament products. For information, visit www.ContechES.com or call 800.338.1122. NOTHING IN THIS CATALOG SHOULD BE CONSTRUED AS AN EXPRESSED WARRANTY OR AN IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. SEE THE CONTECH STANDARD CONDITION OF SALES (VIEWABLE AT WWW.CONTECHES.COM/COS) FOR MORE INFORMATION. Exhibit "D" Stormwater Structural Maintenance CHECKLIST FREQUENT INSPECTION DATE REPAIRS REQUIRED PAIRS MADE NOTES Remove Trash and debris Inspect irrigation system operation Blocked, Clogged Clean outlet, dispose of outlet structure blockage offsite MINOR INSPECTION Condition of Pond Amount of silt in and Amount of silt in Remove by hand if minor, flume use vacuum truck if necessary Amount of ponded water Oil is accumulated inside vault/piping MAJOR INSPECTIONS Condition of Stormwater Quality Structure Evidence of Tree Cut and remove roots. root intrusion Restore structural integrity System Structure type and Condition Damaged Pavement, Replace pavement. noticeable sinking Contact Engineer to access causes. Condition of filtrations stem Berm or Embankment Settlement STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 11 /17/2016 Berm or Embankment Settlement Location of erosion Evidence of Animals Evidence of Aquatic life Condition of Aeration Foundation STORMWATER FACILITY MAINTENANCE AGREEMENT 11 Rev. 03/01/2022 BN