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HomeMy WebLinkAboutContract 60211Date Received: 10/4/2023 Permit No.: SWFMA-23-0062 Time Received: 7:50 a.m. City Secretary No.: 60211 STORMWATER FACILITY MAINTENANCE AGREEMENT THIS AGREEMENT, made and entered into this 4th day of October 2023, by and between GCHD FW I35W, LLC, a Texas 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 property described as a tract of land situated in the William McCowen Survey, Abstract No. 999, Tarrant County, Texas according to the deed recorded in Document No. D223151195, 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 Echo Suites — Fort Worth, 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 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 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 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 to inspect the Facility Property whenever the City deems necessary. The purpose of the inspection is to follow-up on reported deficiencies and/or to respond to citizen complaints. The City shall provide the Landowner, its successors and assigns, STORMWATER FACILITY MAINTENANCE AGREEMENT 2 Rev. 03/01/2022 BN 4892-7692-6849, v. 1 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 within thirty (30) days following receipt of written notice of such failure from the City, together with such additional time as may be reasonably necessary so long as diligently proceeding to cure, 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 actual costs of such repairs to the Landowner, its successors and assigns pursuant to Section 5 below. 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 following notice to the Landowner and its failure to cure pursuant to Section 4 above, 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 STORMWATER FACILITY MAINTENANCE AGREEMENT 3 Rev. 03/01/2022 BN 4892-7692-6849, v, 1 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 WHATSOEVER ARISING, OR WHICH MIGHT ARISE, FROM THE FAILURE OF LANDOWNER OR ANY FUTURE OWNERS OF THE ABOVE FACILITY 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 Facility 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 during their respective periods of ownership, including any property owner's association that assumes in writing the obligations under this Agreement. STORMWATER FACILITY MAINTENANCE AGREEMENT 4 Rev 03/01/2022 BN 4892-7692-6849, v. 1 Executed this 4th day of October CITY OF FORT WORTH Dana BUi'GI G oAlC Dana Burghdoff (Oct 3, 02321:54 CDT) Dana Burghdoff Assistant City Manager City of Fort Worth Date: Oct 3, 2023 .2023 Approved as to Form and Legality: Thomas Royce Hansen, Assistant City Attorney II City Attorney's Office Date: Oct 3, 2023 a6FaagIl pORT��pd ATTEST: p�oo 000��d ono o=� j Jannette S. Goodall City Secretary , 2023 Date: Oct 4, 2023 .2023 2023, LANDOWNER: GCHD F>135W, Ian J. McClure Its: Manager Date: Pi hcz Z 2 .2023 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 3, 202312:22 CDT) Rebecca Owen Planning Manager Date: OU 312023 2023 OFFICIAL RECORD CITY SECRETARY FT. WORTH, TX STORMWATER FACILITY MAINTENANCE AGREEMENT 5 Rev. 03/01/2022 BN 4892-7692-6949, v. 1 STATE OF TEXAS § COUNTY OF TARRANT § r,l�- This instrument was acknowledged before me on OTC AT)IW �5 , 2023 by Dana Burghdoff, Assistant City Manager of the City of Fort Worth, on behalf of the City of Fort Worth. BROOKE BONNELL iNotary Public, State of Texas ?+y;. Comm. Expires 10-11-2026 Notary ID 134009626 i LANDOWNER STATE OF COUNTY OF �'7�CLrn% M 0 *lop 0 W;.00� EIM�- �40 BEFORE ME, the undersigned authority, a Notary Public in and for the State of T:r x A 5 , on this day personally appeared Ian J. McClure, Manager, known to me to be the person whose name is subscribed to the foregoing instrument, and acknowledged to me that he/she cxccuted the same for the purposes and consideration therein expressed, as the act and deed of GCHD FW I35W, LLC, a Texas limited liability company and in the capacity therein stated. GIVEN UNDER MY HAND AND SEAL OF OFFICE this day Of -<5 h-,r__,- 92023. --�-��- = Notary Public, tate of TAMMY DARNELL Notary Public, State of'raxaa wyc vz' Comm. Expires 08-14-2020 Notary ID 124303039 STORMWATER FACILITY MAINTENANCE AGREEMENT 6 Rev. 03/01/2022 BN 4892-7692-6849, v. 1 EXHIBIT "A" INSERT LEGAL DESCRIPTION STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 03/01/2022 BN 4892-7692-6849, v. 1 EXHIBIT "A-1" SHEET 2 OF 2 TIMBERLAND BOULEVARD EiEC7RIC UNE EASEMENT INST. NO. IX97121527 (A VARIABLE WIDTH RIGHT-OF-WAY) O.P.RT.at r---------- J L-- -POINT OF -J L-POINT OF ---------- i------- I BEGINNING COMMENCING ----------1------------,------------. r rINST. L5IN, 10,578 SQ. FT. 1/2 RCI°03�PUUBUC)r Nr I I �0.243 ACRE � � a CONNTTR=cNO . D217204252 I I 1 1 I �.............".... I I > Mor�UMENT I I L3 I > ; SANITARY SEWER, WATERLINE, PERPETUAL ACCESS DRIW V UTIUTY EASEMENT �.�I 4 f/ INST, SDAENT I I i i INST. NO.O. �0012041 INST. NO. D217204252 i C M m WJ 1/ aPJLT.at I III LOT 2R, BLOCK 2 I l n; o AU / / LOMORIAH�AT 2 I III MORi INST. NO. D217 0425TIMBERLAND 2011ION I °� � Io / J TIMBERLAND ADDITION I III O.P.R.T.C.T. I I n, INST. NO. D209331585 �4 O.P.R.T.C.T. I I I TRIANGLE I-35 REALTY, LTD. I I y I / 1 / V UMTY EASEMENT I INST. NO. D206086268 11 _ 1 I INST. NO. 02SMIM I o D 1 / OPJ1.t4T. I - I O.P.R.T.C.T. 1wX1V PUBLIC I L { 2V SANITARY SEWER EASEMENT 10' ONCOR EASEMENT PEEN NO. DE EASEMENT / INST. NO. D209331585 j INST. NO. D220108709 D OPRT.GT. I ' ` — ——OPRT.aT.— — — aP.RT.aT. — 1I �I I'r- - I& RCM S8936'07'W 266.75'_ — — — S8936'07"W 358.49' — — J -WAI' (BASE BEARING) t — — — — — — CONN1R�r I MACNAILII /? I LOT 3, BLOCK 2 I LOT 4, BLOCK 2 I I MORIAH AT TIMBERLAND ADDITION MORIAH AT TIMBERLAND ADDITION INST. NO. D217204252 I INST. NO. D217204252 II iii J I J O.P.R.T.C.T. 1 O.P.R.T.C.T. I I The undersigned, Registered Professional Land Surveyor, hereby certifies that this plat of survey accurately sets out the metes and bounds of the easement tract described. /27/2023 TIMOTHY R. MANKIN Reglatered Profeaelonal Land Surveyor No. 6122 I LINE TABLE I LEGEND LINE BEARING DISTANCE I IRF - Iron Rod Found Ll S 77'07'14" W 46.25' I O.P.R.T.C.T. — Official Public Records of Tarrant County, L2 S 00°23'44" E 41.00' Texas L3 S 89*36'16" W 258.00' INST. NO. — Instrument Number L4 N 00'23'44" W 41.00' I Proposed Tract L5 N 8936'16" E 258.00' Proert _ — — Easementsine — — — Street Centerline GRAPHIC SCALE 0 so 100 ( IN FEET ) 1 inch = 100 ft. JOB NO.: 23-0404' PEISER & MANKIN DATE: 07/27/2023 SURVEYING, LLC REVISION www.peisersurveying.com SCALE: 1" = 100' 1612 HART STREET SUITE 201 FIELD: J.D.H. SOUTHLAKE, TEXAS 76092 DRAWN: J.B.W. 817-481-1806 (0) tmankin©peisersurveying.com STORM WATER FACILITY UNDERGROUND DETENTION MAINTENANCE AREA 0.243 ACRE TRACT OF LAND IN THE WILLIAM McCOWEN SURVEY, ABSTRACT NO. 999, CITY OF FORT WORTH TARRANT COUNTY, TEXAS Basis of Bearing — Based on the south line (South 89 deg. 36 min. 07 sec. West) of Lot 2R, Block 2, Moriah at Timberland Addition, an addition to the City of Fort Worth, Tarrant County, Texas, according to the plat thereof recorded in Instrument Number D217104252, Official Public Records, Tarrant County, Texas. EXHIBIT "A-2" SHEET 1 OF 2 STORM WATER FACILITY UNDERGROUND DETENTION MAINTENANCE AREA Being that certain 10,578 square feet (0.243 acre) tract of land situated in the William McCowen Survey, Abstract No. 999. City of Fort Worth, Tarrant County, Texas, and being a portion of Lot 2R, Block 2, Moriah at Timberland Addition, on addition to the City of Fort Worth, Tarrant County, Texas, according to the plat thereof recorded under Instrument No. D217204252, Official Public Records, Tarrant County, Texas, and being a portion of that certain tract of land conveyed to Triangle 1-35 Realty, LTD., by deed recorded in Instrument Number D206086268, Official Public Records, Tarrant County, Texas, and being more particularly described as follows: COMMENCING at a 1/2 inch iron rod with red (illegible) plastic cap found (controlling monument) for the most easterly northeast corner of said Lot 2R, some being in the intersection of Metroport Way (o variable width right—of—way) and Timberland Boulevard (a variable width right—of—way); THENCE South 77 deg. 07 min. 14 sec. West, through the interior of Lot 2R, a distance of 46.25 feet to the northeast corner of the herein described tract, some being the POINT OF BEGINNING; THENCE continuing through the interior of said Lot 2R, and the along the perimeter of an underground detention maintenance area as follows: South 00 deg. 23 min. 44 sec. East, a distance of 41.00 feet to the southeast corner of the herein described tract; South 89 deg. 36 min. 16 sec. West, a distance of 258.00 feet to the southwest corner of the herein described tract; North 00 deg. 23 min. 44 sec. West, a distance of 41.00 feet to the northwest corner of the herein described tract; North 89 deg. 36 min. 16 sec. East, a distance of 258.00 feet to the POINT OF BEGINNING and containing 10,578 square feet or 0.243 acre of computed land, more or less. Basis of Bearing — Based on the south line (South 89 deg. 36 min. 07 sec. West) of Lot 2R, Block 2, Moriah at Timberland Addition, an addition to the City of Fort Worth, Tarrant County, Texas, according to the plat thereof recorded in Instrument Number D217104252, Official Public Records, Tarrant County, Texas. JOB NO.: 23-0404 PEISER & MANKIN DATE: 07/27/2023 SURVEYING, LLC I REVISION www.pelsersurveying.com Texas NOT TO SCALE Society of 1612 HART STREET Professianol SUITE 201 Surveyors SOUTHLAKE, TEXAS 76092 DRAWN: J.B.W. 817-481-1806 (0) tmankin@peisersurveying.com Member since 1977 The undersigned, Registered Professional Land Surveyor, hereby certifies that this legal description accurately sets out the metes and bounds of the easement tract described. f; jl'07/27/2023 TIMOTHY R. MANFCIN Registered Professional Land Surveyor No. 6122 s� LLC COMMERCIAL • RESIDENTIAL BOUNDARIES • TOPOGRAPHY MORTGAGE EXHIBIT "B" DESIGN PLAN AND SPECIFICATIONS STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 03/01/2022 BN 4892-7692-6849, v. 1 - - - - - _ - TIMBERLAND BOULEVARD �- J oo �nli _ �WATEM IyE k ASLINE Erc�uPut / aARY SEWER. (VARIABLE WIDTH R.O.W.) (� U) d- N CC INSTRUMENT NO. 02021.48% -/ _ ElECIRIC UNE EASEMENT — _ _ z v °l - m CC INSIRUMENFND.-B7S17121523 Lu m f11 c t mIL w C.C.R.T.C.T. Lu mcc t 4 -EXTsr ta- x 11 R '`Jt (- EXIST WALK - _ _ ._ _ - - - - - r w fi' 16 R g 48� Lu �FFA� Z) /.yi� I = 781.J7 O ' NNtI Lfr NJA iri/!1i 91 / �f_ lz = 783 " �^ r�E - OE OF cn k`�i NG ME ` 5' C.IA--I /YIY ice)' aiQ/u' r-' - �'l M 25 LS BUFFER 5' C.1. �- �. _ =' - - - - w 15 15 - - - T7-:: j(w�2110) _.I 20,I _ _ r f •�=` I � -+_. � -.�. � � 1� i - � -+m -� -a�. ! tir-.�- _ __ _L . _ I I L l_. ++�iii�. a O1 I — — — _ = PROF —� C.I. EXIST ELEC PROP — — c = = a = _ — _ _ _ — = CONC POLE TO BE I DRIVE -EyblL REMOVED- _ I'y� — _ I t i . 7 T7h, lZZ �r — O �� J) I l4 m =� a Fiil Is l�II ~ ? w O ---T- Ls � � � z �---II 1 Z N< = 37' I II in I� LS �I 4.57' 100I _ 7259' m I! N � Y C.)Z Q � ENTRY LOT 2R, BLOCK 2 MORIAH AT TIMBERLAND ADDITION — _ - ss I O a J O m w 105,554 SIF 2.423 AC ECHO SUITES 124 ROOMS I � I 24' I __lr_ 42' T ^" I 51l I # I ~ N ~ O ~ O~LL I f .--EXIST OVERHEAD ELEC TO BE " - RELOCATED UNDERGROUND I9. 1 V LS IIn Ij 0 20 40 ( IN FEET ) GRAPHIC SCALE LEGEND EXISTING 51,700 SIF J Q O EocDON 245.5T - — 4-STORY I $ I m = - I I I IL J G FUTURE EV !!a, 48'-6 `� F-- . PKG SPCS (6) I"! ,+ LS 1 iZ E _ �r sD —, 4:0 4 - T_ U TTT s' n, 116 1+ II ,\ L��" I LS n i WATER LINE PROPOSED EXH"SS - — - SANITARY SEWER — PROPERTY LINE PAVEMENT FIRE LANE — �I CONC WALK I JI CITY WALK I f PARKING COUNT O ffff LANDSCAPE LS O� OVERHEAD ELEC UNDERGROUND ELEC —E— TELEPHONE LINE —T— KY'A'9n✓' STORM SEWER — (D CURB INLET 05, Cl. !�YP POWER POLE Is LIGHT POLE OR d� WATER VALVE WATER METER ,y FIRE HYDRANT �FH MD STORM SEWER MH THE SEAL APPEARING ON THIS DOCUMENT WAS AUTHORIZED BY JUAN J. VASQUEZ. P.E. 85852, ON 07/28/2023 OF T� * o It^ * J ,A1. �V QUEZ 51g�5 52 4� S ` �CENSV� 0 14' SHEET C1.01 2?� TIMBERLAND BOULEVARD j — — _— —1 —� — Tr m n N N 1SANIAFIY �A1ELK F�cFyIy(VARIABLE WIDTH R.O.W) � � � y N C CC INSTRUMENT NO. D2O213'1856 Z 5 H t• ELECTRIC UNE EASEMENT .rn C.C.R.T.C3. I CC NsTRLMENrW. 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I j I !l.,TP91.00 .T6�7.,50 ` /b' r - II r m J O 1 091.00 TP91,9D 'TP92.OS / nll Z m W m G91.40 TP92.O5 ` i /7P�Q..0 / N p FEE=792.05 LL- I l I Tca1. I Ip92 Q5/� G9t.O0 Q►ry � Q L- Il 1l O II I G18TC9T,6Q TC91.90 OfPQCo,G91.3O G.91.5- � U �� � ,'slr�k y�8✓E I VI I 1 . St .. SD TPB7.8Q � T .?SG10.T9— G9140 09 j pI ,iai LEGEND BENCHMARK EXISTING PROPOSED PROPERTY LINE MAG NAIL SET IN CONC JOINT THE SEAL APPEARING ON THIS N: 7,028 , 501 .298 E: 2,333,553.711 O O DOCUMENT WAS AUTHORIZED BY CV N PavEMENr JUAN J. VASQUEZ, P.E. 85852, ON N -' -791_ - CONTOUR ELEVATION=787.75' 07/28/2023 II 00 00 TOP OF PVMT ELEV --TP9-Q.5Q [ OF to O TOP OF CURB ELEV .TC91,50 �✓ �Z GUTTER ELEV • 091,00 FINISH GRADE FG87.],S n V � N FLOW ARROW f * V * U 0S SWALE J 1 SHEET OUEZ Ui a. 0 O 20 40 RIDGE — HP — 'O 52G .7LY.15'i.7LIT7UCf.7G?;+. STORM SEWER OR ICENSyO \� ( N FEET OR INLET ❑G.I. OR C.I. O �S�ONAL E•�G C� .02 GRAPHIC SCALE 'r-Irn , I tj9 STORM SEWER MH m .` TIMBERLAND BOULEVARD `14 .. ` F I L LEGEND EXISTING PROPERTY LINE -- PAVEMENT CONTOUR DRAINAGE AREA FLOW 'JYStStXX'S(XX:? STORIA SEWER I DRAINAGE AREA p 50 100 2.18 ACREAGE 7.08 FLOW (CFS) ( IN FEET ) GRAPHIC SCALE ❑I DESIGN POINT L __ THE SEAL APPEARING ON THIS DOCUMENT WAS AUTHORIZED BY JUAN J. VASQUEZ, P.E. 85852, ON 07/28/22023 OF * L ay J rl. �V QUEZ oN59i'5 52 SS /CENS� 0 !ONAL UNoV N m m O � O � N J d•m�NN _1 LO a N LL Z E 5— .. WmV7 `aa W m Z 0 Z W z W o u� �Q d ox oLd N Q Q _ Uzi Q 0 0 Lu m�� � m� Q 01=� LJJ N � O LL- CD ~ I- Z o<o Qu 0 o ('M O N O N O �— I N II Lr) W O N �— (O jZ: O 0 Z U � N U O` m 0 m 0 E.yCIzicid C1.03 ISFORid WATER RUNOFF DATA IPRE-0E4ELOPEO CONDRIONS1 Ql 02 D�1 A E (2168) 35 I 11MOn) I I4 or) I Ids) I 1 �310 11 I 3,59 I IS 4 O81 1 053 1 0.90 1 10 1 400 1 1.94 1 4.71 1 225 1 534 'RAINFALL INTENSITIES FROM iSWM H1DROLOGYTABLE515. TARRANT COUNTYRAINFALL INTENSITIES 05 110, Q10 1100' Q100 Ids) 1whd (cS:) QnAO (e1s) 438 051 497 924 7D.5 214 1 651 311 924 1 442 PRE -DEVELOPED: Y-INLET CALCULATIONS (WEI R) LENGTH OF DESIGN INLET WEIR(L) HEAD(H) CAPACITY FLOW ID (FT) (FT) (CFS) (CFS) 1 16 05 127 705 CURB INLET CAPACITY=O=CLH' C=WEJRCONSTMT= 225 L = LEGNT H OF WEIR = TABLE ABOVE H = HEAD = TABLE ABOVE PRE-DEVELOPEO: CURB I NLET CALCULATIONS LENGTH OF DEPTH CAPACITY DESIGN INLET ID OF CURB FLOW FLOW (L)(FT) (d)(FT) (CFS) (CFS) 2 10 1 1 013 442 CURB INLET CAPACTITY=Q=Cw'(Lr(d)' CK,= 23 L=TABLEABOVE d=TABLEABOVE I EX COND. DESIGN DATA ANALYSIS DESIGN Q, Q� Q,m POINT I (ds1 ((.,,I(cb) I 1 327 462 I I 744 1 2 1 194 274 4A2 TOTALO• 52' 736 1186 PER W-2110 S iSWM - 2015-0619 N m O U O OO�i N J o o y m LL (� LC' xN Z C/) w h p WO1N�a LLI m z D Z a Z W COMMENT N w TO EXISTING Y-INLET TO EXISTING CURB INLET Q w O (n ~ Q 0 X 0LLJ H d Na � _ G Q O ry J O w m��i LL M Q ct ::>: w N 1= 0 J a 0 Z Q � O U THE SEAL APPEARING ON THIS c) DOCUMENT WAS AUTHORIZED BY N 04 JUAN J. VASQUEZ, P.E. 85852, ON - N 07/28/2023 p 0000 N Z (fl06 O�q ZO (0_5 * rS�k QUEz cn kENS k �. 5 G�� w`� SHEET SSJONAL� C1.04 )Vill. 9 l-{ TIMBERLANQ 6vULEV;, an f a,n � j -%-4 I N N ZEE p o I, O, co : m d ...�T W z z W t N } W I 0 Q 01 q Q w oX i. < w 0- 0 Q o 9'9 w m Q cv 0 , F�u I LLJ LEGEND EXISTING PROPOS.-O PROPERTY LINE PAVEMENT -- /f1O CONTOUR DRAINAGE AREA FLOW 54—> STORM SEWER SD pR DRAINAGE AREA ACREAGE 0.24 FLOP! (GFS) .44 0 50 100 �I DESIGN POINT ( IN FEET ) GRAPHIC SCALE Q J O Z_ _> Q Q � ~ O O n :�i THE SEAL APPEARING ON THIS CM o DOCUMENT WAS AUTHORIZED BY o N CV JUAN J. VASQUEZ, P.E. 85852, ON r co 07/28/2023 II o � � � O OF 6 * Y * 0 J .. IV QUEZ can a a 85852 SHEET l'� s�"/ ONA� �'�'�� C1.05 V It N W W SrORWIWAT64 RUNOFFOATA(POST-OEWELOPED COMDITIONSI J 0 m 0 m N J h N N DRAINAGE AREA C TC II' 01 12' 02 V 05 I70' 010 11001 0100 COMMENT 00 w n u- AREA (Acres) Win) onibrl Ida) 0nIhrl (cis) t,nh) (del WA4 (Cho (hbn (Cs) ,c v K N U ry C I 024 I 090 10 40fi 0.88 471 1.02 5.74 124 651 141 924 2.00 TO CURBINLETAIG DETENTION Z 2 020 090 W 406 013 4.71 0.85 5.74 123 651 117 924 1.68 TOCURBINLETALG DETENTION S a m U) c E 12 3 020 0.90 10 406 073 4.71 095 579 103 651 117 924 108 TO CURBINLETAI.G DETENTION W Ia d 4 029 0.90 10 4.06 L08 4.71 123 5.74 150 BS1 170 924 2.41 TO ROOF DRAINS4) G DETENTION Z m 5 059 0.90 10 406 216 471 250 574 305 651 346 924 421 TOCURBINLETAIG DETENTION a Of 6 029 090 10 4.06 1.06 471 123 5.74 150 651 170 924 2.41 TO GRATE INLET JUG DETENTION Z F 7 0.02 090 10 406 007 471 0.08 574 010 6.51 012 924 017 TOMETROPOR WAYPSTY-INLET w 8 010 0.35 10 4.06 014 4,71 016 574 020 651 023 924 032 TO EXISTING Y4NLET W 9 012 I 0.90 10 406 0.44 4.71 OS1 5.74 002 651 070 924 1.00 TO AREA OSI DUST IN CURB!NLET � 10 013 I 035 10 408 0.18 4.71 021 5.74 026 851 030 924 0.42 T OT IMBERLAND BL49sD(IST Y4NLET 091 053 I 090 10 408 194 4.71 225 574 274 6.51 311 924 4.42 TO EXIST IN CURB INLET Q 'RAINFALL NTTENSITIESFROM I WMHYDROLOGY. TAM 515,TARRANTCOUNTY RAINFALLINTENSITIES DRAINAGE AREAOSI BASED ON PLANS FOR CWSP ARMACYSTORE 2167(W-2110),SHEET C43 DRANAGE AR EAMAP(AREAS AAND E),SYWINIO_EMAN& ASSOCIATES. INC. DATED 12-15-2009 EX CON D. DESIGN DATA ANALYSIS POST-DEWELOPED: Y-INLET CALCULATIONS (WEIR) DESIGN �- DESIGN Qc1al , Os Qn�s INLET �HEAD�H) CAPACITYPRIM pcfsl LENGTH OF z (cla) IOWEIR (L) (FT(CFS) FLOW U) (n 1 327 4.62 7.44 (FT) (CFS) O Q 2 1.94 274 4.42 1 16 05 127 032 C) X "LLJ OTAL 0 - 521 7.36 11 B6 �� Q 1-- CURBINLETCAPACITY=O=CLH'a a N PER W.2110&iSNM-2615-0619 C=WEIR CONSTANT= 225 Q y I--, _ L=LEGGTH OF WFJR=TABLEAB01rE C-) z H= HEAD =TABLE ABOVE p Q O m W IPROPCOMO. DESIGN DATA ANALYSS POST -DEW -LOPED: CURB INLET CALCULATIONS m LENGTH DEPTH DESIGN 0, Os 0,a CAPACITY DESIGN Q N � O POINT (del (Clsl Icfsl INLET ID OF CURB OF FLOW FLOW 1' (CFS 334 561 (L)(FT) (d)(FT) (CFS) (CFS) W L� I 2 238 336 5.42 2 f0 05 813 542 I Uf TOTAL 0- 494 670 1123 J a O 'Proposed runts ban design polnt#1 nalaeloae U G detention CURB IN LET CAPACT ITY=O=CW'(L)'(d)" Z = rdesserelesaocadnglo shad C43 fordramagearess 11o6. CW= 23 Q pluemndl from arm 8 m marling Y+nld L=TABLEABOVE U d=TABLEABOVE EgSTINO TO PROPOSED DESIGN DATA ( ) q 4ALYSIS THE SEAL APPEARING ON THIS O DESIGN G, cs 01W DOCUMENT WAS AUTHORIZED BY N POINT 1a91 (del 1.6)63 JUAN J. VASQUEZ, P.E. 85852, ON00 1 -0.71 -128 - 1 2 1 OA4 062 1.00 07/28/2023 I;V o ti TOTALO• -027 4AS -0.03 Z (O O OF 6 C� U * * tu U O N Jl .152 V QUEZ Ena ❑ SHEET ss� NAL���G,� C1.06 SWARY SEWER, E dc.C" E 4e 111191IIWENf NO. =213406 � STA 04 00.00 LN 'SO- I' C.C.U.C.T. `"CONNECT TO EXIST Y-INLET 4 l FL 30"=783.65t FL 18"=783.65 J TIMBERLAND BOULEVARD ) 2 'V l0 N IVARWBLE WIDTH RO.W.) C6 5 co ELECTRIC UNE EASEMENT W t a y _. - - - -- ----CC INSTR6MENFR""7121527-- ----' - -- - Z T m Of VIL.- - .LN ' -- -3-' _ -• - \ — --- X STA +,50 LN 'SD 2' STA 0{1050 W /CONST 5C.I. ~ i TC=789-50 �788� _ - _ - TC-790A5 FL 15=785.50 , - �1 -- FL 15" 78615 ' _ rxncNnuS�' - ruc ,v�i scrra co;r. domu � � 1 � STA 0+00,00 LN 'SO-2- M. ioza,oava 0 LN_ r.%I. " ' Yf /CONNECT TO U.0 nRjie:s err CaNNECSTA TOTO U. ' STA 0+O0.DO LN SO 4_`! �� -� �l\k Tn —DETENTION SYSTEM cy �1 _ _ _ _ _ CONNECT TO U.G. � � � � G7 � � EX - � - FL 15 785.45 rfJ _ DETENTION 7865 D TEM 'DETENTION SYSTEM t � �' ) -'(X- r _1. _ v_, �•.KL �/'''� FL 15"=786.35 /UY`'"'- ' _ �- - t.L yU�` Vi 15' HOPE 6" W\ ,I1�� N�.�. — _ — _c)0 _ . — �J�TLN 'SD-3 STA+29_; -c-£X 30 RCP`\ �31aF'- �_703 LF 48 DIA Ptf'E ON 0.109E-U.G. pETENTION_ r 122 LF a6 DIA PIPE ON O 1OX ILGOETENiION-> r CONST 5' r W-2110) ---- ---- c--- — — TC=79Q50 — ,It !L 48' DIA AIPE 0 O.ID% U.G. DETENTION 122 LF 48' DiA PIPE (TN 0.T4& U.C. DETENTION-> g�-}�' 'i -a. �r s s -ri.� s s �. 4 -ri � 75 Q!! -� FL 15" 78 C-280 LF_4B' DIA PIPE 0.1Dx U.G_'0£TENTIOPf —_ _ t-210 LF !8 DIA PIPE ON U.C�DETENTIGTt _ 31,472 LF 48 DIA PIPE TOTAL U. ETENT -I 'T LNS D 4 I •I• I li STA 0+33.85_ I,N 'SD-1'!' _ — _ _ — ,<-24oL413 rDIA pil> .(Nd R.10U.G.DETENTION — — — — — -- '/XXXSSSpI Il z 1B"x45'BEND _ I _==__ — v =__—__ =__ I �¢ II O1n _--I<-240 LF 4B J ih PPE ON 0.iox =U Q T N'fIDN I Q �STA 0+4201 i �_7•_ --.�_.++. r 2 .� 62W '_7 CQNNEOI TO V.G. .- �11 — % \ n jl- p0 - Z X DETENTION SYSTEM LLJ 1� W/ORIFICE PLATE SEE SHEET C6.3 FOR 48" UNDERGROUND'''. (,� n JJJ Q � I(REF DTL THIS SHT) ��1 DETENTION PIPE TYPICAL SECTION STA D+ OQ LN 'SO-5' ` ( FL 18'=703.86 -/ CONNECT TO U.G. , I j' 0 : i I I I DETENTION 785 62 SYSTEM - A* 3 W Q er f i 1 11I Jp o � mw� W L _� mill m - _ m x M � o � o Jao U) Qr _ F- EXISTING LEGEND PROPOSED 0 U PROPERTY LINE THE SEAL APPEARING ON THIS PAVEMENT DOCUMENT WAS AUTHORIZED BY WATER LINE JUAN J. VASQUEZ, P.E. 85852, ON ch OVERHEAD ELEC 07/28/2023 CV O TELEPHONE LINE T O N Q STORM SEWER 00 — — OF II 6 N (OD I CURB INLET C.I. A\� = O r (D O GRATE INLET ❑ G.I. C� f'F POWER POLE Z --[j-t• LIGHT POLE OR Jl V QUEZ wv WATER VALVE F__�52 0 Q cu 0 20 40 WATER METER 0 4a/3J�- /1,,��CCGO (v U) a 0 FIRE HYDRANT ICEN V \� ( IN FEET) 610 STORM SEWER MH SS/ONAL�V SHEET GRAPHIC SCALE C1.07 x C 1 800�; �H 795 COMP FILL, I 790 785-- :• 775 0+ 00 0+ 50 10- 5- 0- ( IN FEET ) 1 inch = 5 ft. VERTICAL SCALE - � c x0 - CS a-_ 1' MIN, COVER TOP �S PROP _Phn.}T_a r OF PIPE TO TOP OF-" EX GRND -PVMT FOR CONTE O EL Cup SYSTEM of _ INSTALL 1.472 LF OF 48'_DIA. _ - - _ UG. DETENTION- PIPE - - - - - -� PER CONTECH ENGINEERED .tL 't SOLUTIONS. LLC. c �� h It Il hh c c a 800 795 790 785 780 775 1 +00 1 +50 2+00 2+50 48" UNDERGROUND DETENTION PIPE (TYP) 0 20 40 80 ( IN FEET ) 1 inch = 40 ft. HORIZONTAL SCALE BENCHMARK MAG NAIL SET IN GONG JOINT N: 7,028,501.258 E: 2,333,553.711 ELEVATION=787.75' THE SEAL APPEARING ON THIS DOCUMENT WAS AUTHORIZED BY JUAN J. VASQUEZ, P.E. 85852, ON 07/28/2023 OF rFp * 0� ,t ,r i ��v QUEz 0 Ilt 52 W SS/ONAL ECG T7 V N W W _ l .O m N N N J Z w H r 0 � U) W rn� mCL W m Z LLI ~ W CT Q z oCn w E- Q J o X n w LL NQ~ OOC YZF- a o Jry 0 0 �� m� Z NFzo w F-F- �W Sao C) Q} 0 cM N 0 O N N 00 II Ln N o r� m o 6 Z U U � N � d 0 SHEET C1.08 TOP OF PVMT f TOP OF PAVEMENT VARIES 1.60TO 2.85' U.G. DENTENTION TOP OF U.G. DET= 787.86 t PROP 48" STORM - 100-YR WSEL= 787.72 BEYOND (LN SD-1) \ 1 1 H1(WITH TW) H2 \ TW= 786.65 i t 10.5-INCH _ \ CL OF 10.5" ORIFICE ORIFICE FL 10.5" ORIFICE = 785.97 ! 5-YR WSEL= 785.95 Hr 15.75" 1 1-YR WSEL= 785.26 � r � CL OF 9.6" ORIFICE _ FL 4811= 783.86= FL 9.6" ORIFICE= 783.86 9.6-INCH COORD W/CONTECH FOR ORIFICE APPROPRIATE STORMRAX TRASH RACK ORIFICE PLATE DETAIL FOR U.G. DETENTION SYSTEM N.T.S. DISCIpULGIS FltDfa U.G. DETENTION CIRCULAP ORIFICE CAICULATIOY-U.G. DETENTION ALLOWABLE EVENT DISCHARGE FROM DISCHARGE ACTUAL FROM ORIFICE DISCHARGE FROM WSEL TAILWATER ORIFICE H ORIFICE NO OF A CENTROID p SYSTEM (CFS) (CFS) SYSTEM (CFS) ORIFICES (SF) WSEL ELEV (FT) LET} ICES! 1-YEAR 243 I 242 2.42 1-YEAR 785.26 000. 784.26 1.00 080 1 0.50 2-42 5-YEAR 3." 114 3.14 ) 785-26 0.00• - 088 1 0.60 0.00 2.42 CFS 1100-YEAR 5.53 1 5.49 5.49 _ 5-YEAR 78595 0.00' 784.26 1.69 080 1 0.50 3.14 I STAGESTORAC, DISCHARGETABLE 78595 0.00' - 086 1 0.60 0.00 3.14 CFS I ELEVATION [FT) Q(CFSI I 78386 I 0 - IFILMSMEM) 100-YEAR! 787-72 I 786-S 7PA-26 1.07 080 1 0,50 2.50 784.00 0.24 78772 60 I 29 5.49 CFS 75.00 1.97 78526 I 242 0-YRFLOM Q-CAapHff CY060 LrA22FTIS' 78 3,14 IS-YRnaM75.95 A0of all onrices pa n 7116.00 3 21 H-WSEI-CIeiYlaa a Orifice 787A0 I 4.53 I 787.72 5.49 IaedYRUaM - NO TAILWATER CON DITIONS EXIST FOR THE 1-YEAR AND 5-YEAR CONDITIONS. DOWNSTREAM STORM SYSTEM 787.86 5.85 IRwOFSmum WILL BE IN PARTIAL FLOW UN DER THESE CONDITIONS. H2(WITH TW) THE SEAL APPEARING ON THIS DOCUMENT WAS AUTHORIZED BY JUAN J. VASQUEZ, P.E. 85852, ON 07/28/2023 T7 V N IA 1D J C mu�7NN J J oo �nli r x N # Z w F- EE m 53 U) = v EL w �+ Z z (D w w d z J O Q ow W NQ~ ❑ o W C)z? gOQ� m Ld m a �::5iry W NF- O U F LIL- _jao o QF- 0 N N u 00 ~ O � Z (D O 6 Z (.) m ) ai U O` L6 U) IL 0 SHEET C1.09 1 - YEAR STORM DETENTION SYSTEM TOTAL AREA DRAINING TO SYSTEM= 1.81 ACRES (DA 1-6) A. ALLOWABLE DISCHARGE FROM SYSTEM= CIA= (0.35)(3.32)(1.81) = 2.10 CFS B. DESIGN DISCHARGE FROM SYSTEM= 2.43 CFS THROUGH CONTROL ORIFICE PLATE (REF DETAIL THIS SHEET). iSWM MODIFIED RATIONAL METHOD DETENTION CALCULATIONS 1-YR Ca = 0.35 (Existing) I. (min) = 15'(Existing) I (in/hr) = 3.32 (Existing) A (acres) = 1.81 Qa (cfs) = Ca " I ' A = 2.10 cfs >>> 2.43 cfs = Qa for detention design' a = 95.835 (Table 1.18 Railtall Factor "a") b = 13.425 (Table 1.18 Railfall Factor "b") C = 0.90 (Proposed) t. (min) = 10 (Proposed) Vpre = 60 [C"A'a - (2"C"a"b"A`Qj112 + (Qa/2)' (b - tj = 3,561 cf 131B0 (in) = 1.77 (I in/hr)x(3 hr) = P190 (Where 1= 0.59 in/hr @ 180 min) Td (min) = -,I((2'C"A"a'b) / Qa) - b = 28 min or 0 47 hr Pid (in) = 1.07 (I in/hr)x(Td hr) = Ptd (Where 1= 2.30 in/hr @ 28 minutes) Vmax = Vpre * (P1e0 / Ptd) = 55 991 Cf 1Qa based on total Q1 design of 3.27 cfs per plans for CVS Pharmacy Store Number 2167, sheet C-24, storm line 'T profile, by Winklemann & Associates, Inc., dated 12-15-2009. 'Where Qa = 3.27 cfs - 0.84 cfs = 2.43 cfs (0.84 cfs from drainage areas 7, 8, and 9, ref sheet C4.2) 1-YEAR U.G. DETENTION VOLUME (CF) PIPE PIPE PIPE VOL 1-YEAR 1-YEAR ELEV SIZE AREA LENGTH (cu ft) VOLUME WSEL (dia. in) (sf) (If) (cu ft) 78786 48 12.57 1,472 18,498 786.86 48 1011 1,472 14,881 785.86 48 6.28 1,472 9,249 5,891 785.26 784.86 48 2.46 1,472 3,616 783.86 48 0.00 1,472 0 STORAGE REQUIRED= 5,891 CF STORAGE PROVIDED= 18,498 CF THE SEAL APPEARING ON THIS DOCUMENT WAS AUTHORIZED BY JUAN J. VASQUEZ, P.E. 85852, ON 07/28/2023 P� OF T J V QUEZ pp 152 SS ICENS �`�'�. /0N'AL 0 U m v V v J m N N � J n CJ L4 x N# Z U m F o LU °2 Rd E LU Z 0 of W N W C� fn U Z Z O Q X ~Q H J N Q J p F=- (� O Q 0_ O Q m w 0] 0_ :5j Z NF- o Ol_- F-L� OJ Q p W Q Z � W o c� C) N 0 N N CO N Z cD o 6 Z CU SHEET C1.10 5 - YEAR STORM DETENTION SYSTEM A. TOTAL AREA DRAINING TO SYSTEM= 1.81 ACRES (DA 1-6) B. ALLOWABLE DISCHARGE FROM SYSTEM= CIA= (0.35)(4.86)(1.81) = 3.08 CFS C. DESIGN DISCHARGE FROM SYSTEM= 3.39 CFS THROUGH CONTROL ORIFICE PLATE (REF DETAIL THIS SHEET). iSWM MODIFIED RATIONAL METHOD DETENTION CALCULATIONS 5-YR Ca = EO-35 (Existing) t. (min) = 15 (Existing) I (in/hr) = 4.86 (Existing) A (acres) = 1.81 Qa (cfs) = Ca ' I ' A = 3.08 cfs >>> 3.44 cfs = Q. for detention design' a = 170.81 (Table 1.18 Railfall Factor "a") b = 19.435 (Table 1.18 Railfall Factor "b") C = 0.90 (Proposed) t. (min) = 10 (Proposed) Vp,e = 60 [C'A'a - (2"C"a'b`A`Qa)'12 + (Qa/2) " (b - tj] = 6,095 cf P180 (in) = 2.94 II in/hr)x(3 hr) = P1e0 (Where 1= 0.98 in/hr @ 180 min) Td (min) = q((2"C"A"a'b) / Qa) - b = 37 min or 0.62 hr Pm (in) = 1.84 (I in/hr)x(Td hr) = Pm (Where 1= 2.99 in/hr @ 37 minutes) Vmaa = Vp,. * (P1eo / Pm) = 9�39 of 'Qa" based on total Q5 design of 4.62 cfs per plans for CVS Pharmacy Store Number 2167, sheet C-24, storm line '3' profile, by Winklemann & Associates, Inc., dated 12-15-2009. 'Where Qa = 4.62 cfs -1.18 cfs = 3.44 cfs (1.18 cfs from drainage areas 7, 8, and 9, ref sheet C4.2) 5-YEAR U.G. DETENTION VOLUME (CF) PIPE PIPE PIPE VOL 5-YEAR 5-YEAR ELEV SIZE AREA LENGTH (cu ft) VOLUME WSEL (dia. in) (sf) (If) (cu ft) 787.86 48 12.57 1,472 18,498 786.86 48 10.11 1,472 14,881 785.86 48 6.28 1,472 9,249 784.86 48 2.46 1,472 3,616 783.86 48 0.00 1,472 0 STORAGE REQUIRED= 9,739 CF STORAGE PROVIDED= 18,498 CF 9,739 785.95 THE SEAL APPEARING ON THIS DOCUMENT WAS AUTHORIZED BY JUAN J. VASQUEZ, P.E. 85852, ON 07/28/2023 OF JV QUEz 152 /CENSEP�G���`� �CNAL �1 U 'UM vvvm J Q 010in NN J Oo NrLL _ "t x N ZU) dry c izEd �v m o wmvl ct mo W m z Z 'rn C7 a) Z F- w N W 0 0 rn U Z Z O0 Q X C)� gNa U Z H U O Q D' J O Q mw� m :2 ry Z cv F: 0 O_ LL_ Q O Z W Q>__ ~_ W o c� cM N 0 N C N 00 0 N � Z o 6 Z U cu AD 6 fn D- SHEET C1.11 100 - YEAR STORM DETENTION SYSTEM A. TOTAL AREA DRAINING TO SYSTEM= 1.81 ACRES (DA 1-6) B. ALLOWABLE DISCHARGE FROM SYSTEM= CIA= (0.35)(7.98)(1.81) = 5.06 CFS C. DESIGN DISCHARGE FROM SYSTEM= 5.03 CFS THROUGH CONTROL ORIFICE PLATE (REF DETAIL THIS SHEET). iSWM MODIFIED RATIONAL METHOD DETENTION CALCULATIONS 100-YR Ca = 0.35 (Existing) t� (min) = 15 (Existing) I (in/hr) = 7.98 (Existing) A (acres) = 1.81 Q. (cfs) = Ca " I " A = 5.06 cfs >>> 5.53 cis = Qa for detention design' a = 322.07 (Table 1.18 Railfall Factor "a") b = 2�able 1.18 Railfall Factor "b") C = 0.90,�Proposed) I. (min) = 10 (Proposed) Vpre = 60 [C"A`a - (2*C"a"b'A"Qa)'12 + (%/2) * (b - tc)1 = 11,295 cf P180 (in) = 5.43 (I in/hr)x(3 hr) = Pjea (Where l= 1.81 in/hr @ 180 min) Td (min) = V((2"C"A"a`b) / Qe) - b = 44 min or 0.73 hr Pm (in) = 3.41 (I in/hr)x(fd hr) = Pcd (Where 1= 4.65 in/hr @ 44 minutes) V- = Vpre * (P1e0 / P1d) = 17 "6 cf Qa" based on total Qioo design of 7.44 cfs per plans for CVS Pharmacy Store Number 2167, sheet C-24, storm line'T profile, by Winklemann & Associates, Inc., dated 12-15-2009. "Where Qa = 7.44 cfs -1.91 cfs = 5.53 cfs (1.91 cfs from drainage areas 7, 8, and 9, ref sheet C4.2) 100-YEAR U.G. DETENTION VOLUME (CF) 100- PIPE PIPE PIPE 100- VOL YEAR ELEV SIZE AREA LENGTH (cu ft) VOLUME YEAR (dia. in) (SD (ID WSEL (Cu ft) 787.86 48 12.57 1,472 18.498 17.986 787.72 786.86 48 10.11 1,472 14.881 785.86 48 6.28 1,472 9,249 784.86 48 2.46 1,472 3,616 783.86 48 0.00 1,472 0 STORAGE REQUIRED= 17,986 CF STORAGE PROVIDED= 18,498 CF THE SEAL APPEARING ON THIS DOCUMENT WAS AUTHORIZED BY JUAN J. VASQUEZ, P.E. 85852, ON 07/28/2023 C�, ;E OF J i[i[V QUEZ p 5�9�45 52 s10ENSE� ONAL (M N 0 N N U 00 1 � � N Z (D o 6 Z U Cn li 0 SHEET C1.12 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 4892-7692-6849, v. 1 Exhibit "D" Stormwater Structural Maintenance CHECKLIST FREQUENT DATE INSPECTION Mowing Remove Trash and debris f Inspect irrigation system operation Remove grass clippings Violations Noted MINOR INSPECTION Condition of Pond Amount of silt in pond Amount of silt in flume Amount of ponded 1 water Amount of wetland vegetation Location of Erosion Percent of vegetation Condition of trash guard Location of Erosion MAJOR INSPECTIONS Condition of Stormwater Quality Structure Type of Stormwater Quality Structure Structure type and Condition Condition of Rip -Rap Condition of filtration system STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 03/01/2022 BN 4892-7692-6849, v. 1 REPAIRS REQUIRED REPAIRS I NOTES MADE 10 Berm or Embankment Settlement Location of erosion Evidence of Animals Evidence of Aquatic life Condition of Aeration Foundation STORMWATER FACILITY MAINTENANCE AGREEMENT 1 Rev. 03/01/2022 BN 4892-7692-6849, v. 1