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HomeMy WebLinkAboutContract 58640 Date Received: 12/21/2022 Permit No.: SWFMA-22-0070 Time Received: 8:31 a.m. 58640 City Secretary No.: STORMWATER FACILITY MAINTENANCE AGREEMENT THIS AGREEMENT, made and entered into this 21st day of December 2022, by and between DASHROSE, 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 located in William Welch Survey, Abstract No. 1644, City of Fort Worth, Tarrant County, Texas, being a part of Lot 11-R, Block 7-R, Fields-Welch Addition, an Addition to the City of Fort Worth, according to the plat recorded in County's Clerk's Document D222180454, Plat Records, Tarrant County, Texas, being a part of those certain tracts of land described by deeds to DASHROSE, LLC, recorded in County's Clerk Document Numbers D217209477, D217209554, and D218136232, Deed Records, Tarrant County, Texas and being a portion of South Adams Street and Alley that was vacated by City of Fort Worth Ordinance Number 25581-06-2022, 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 TCU School of Medicine, 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 OFFICIAL RECORD STORMWATER FACILITY MAINTENANCE AGREEMENT CITY SECRETARY Rev.03/01/2022 BN FT.WORTH,TX 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 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. STORMWATER FACILITY MAINTENANCE AGREEMENT 2 Rev.03/01/2022 GN 3. The Landowner, its successors and assigns, hereby grant permission to the City, its authorized agents and employees, to enter upon the Property and to inspect the Facility Property whenever-the City deems necessary. The purpose of inspection is to follow-up on reported deficiencies and/or to respond to citizen complaints. The City shall provide the Landowner, its successors and assigns, copies of the inspection findings and a directive to commence with the repairs if necessary. 4. In the event the Landowner, its successors and assigns, fails to maintain the Facility in good working condition as specified herein, the City, its authorized agents and employees, may enter- upon the Facility Property and take whatever steps necessary to correct deficiencies identified in the inspection report and to charge the costs of such repairs to the Landowner, its successors and assigns. It is expressly understood and agreed that the City is under no obligation to routinely maintain or repair said Facility, and in no event shall this Agreement be construed to impose any such obligation on the City, such obligation is Landowner's. 5. The Landowner, its successors and assigns, will perform the work necessary to keep the Facility in good working order as appropriate. In the event the City pursuant to this Agreement, performs work of any nature, or expends any funds in performance of said work for labor, use of equipment, supplies, materials, and the like, the Landowner, its successors and assigns, shall reimburse the City upon demand, within thirty (30) days of receipt thereof for all actual costs incurred by the City hereunder. In the event that Landowner or its successors or assigns fail to pay the City for the costs incurred under this section, the City shall impress a lien for the costs of such work upon other lots owned by the Landowner. Such lien shall be perfected by filing in the office of the County Clerk of Tarrant County, Texas an affidavit identifying the property to be charged with such lien, stating the amount thereof, and making reference to this Agreement. 6. This Agreement imposes no liability of any kind whatsoever on the City. THE LANDOWNER AGREES TO HOLD THE CITY HARMLESS FROM STORMWATER FACILITY MAINTENANCE AGREEMENT 3 Rev.03/01/2022 SN ANY LIABILITY IN THE EVENT THE FACILITY FAILS TO OPERATE PROPERLY. LANDOWNER COVENANT AND AGREE AND DOES HEREBY INDEMNIFY, HOLD HARMLESS AND DEFEND THE CITY OF FORT WORTH, ITS AGENTS, SERVANTS AND EMPLOYEES FROM AND AGAINST ALL COSTS, EXPENSES, LOSSES, DAMAGES, CLAIMS OR CAUSES OF ACTION WHATSOEVER ARISING, OR WHICH MIGHT ARISE, FROM THE FAILURE OF LANDOWNER OR ANY FUTURE OWNERS OF THE ABOVE FACILITITY PROPERTY TO MAINTAIN THE FACILITY, INCLUDING, BUT NOT LIMITED TO THE BED AND BANKS OF THE DETENTION POND; ANY DAMAGES CAUSED TO PERSON OR PROPERTY DUE TO (1) FLOODING OF THE POND AND ITS BANKS, (2) SLOPE FAILURE OF THE BANKS OF THE POND, OR (3) FAILURE OF THE POND OR ITS BANKS TO OPERATE IN A MANNER CONSISTENT WITH CITY OF FORT WORTH CRITERIA TO PERFORM ANY OTHER DUTIES OR OBLIGATIONS HEREUNDER. 7. Landowner covenants and agrees that no habitable building shall be erected within the drainage easement outlined on Exhibit "A" but this paragraph shall not preclude construction of other improvements within the drainage easement, which do not impede drainage. Landowner covenants and agrees that no habitable building shall be erected on the above property abutting such easement which shall have a finished floor at an elevation less than two feet above the maximum depth of water in the detention pond which would occur during a 100-year frequency flood. 8. This Agreement shall be recorded among the land records of Tarrant County, Texas, shall constitute a covenant running with the land, and shall be binding on the Landowner, its administrators, executors, assigns, heirs and any other successors in interests, including any property owner's association. STORMWATER FACILITY MAINTENANCE AGREEMENT 4 Rev.03/01/2022 BN Executed this 21st day of December 2022 CITY: LANDOWNER: Dana 22-4 oAC Dana Burghdoff ec 19,202215:07 CST) DASHROSE, LLC, Dana Burghdoff, a Texas limited liability company Assistant City Manager City of Fort Worth By: PLOUTOS PROPERTY Date: Dec 19,2022 MANAGEMENT LLC, a Texas limited liability company, its Manager B William M. Kerr, Jr., an ing Member Date: 71Z2 Approved as to Form and Legality: Contract Compliance Manager: Thomas Royce Hansen, By signing I acknowledge that I am the Assistant City Attorney II person responsible City Attorney's Office for the monitoring and administration of this contract, including Date: Dec 19,2022 ensuring all performance and reporting 444oant requirements. FoRraa� ATTEST: a Rebecca Diane Owen(Dec 19,202214:44 CST) �°aa°° °°° � Rebecca Owen, Planning Manager %Annglf- . 4� Qo-nBXA5o40 Jannette S.Goodall(DR21,2022 08:30 CST) Development Services Jannette Goodall, City Secretary City of Fort Worth Date: Dec 19,2022 Date: Dec 21,2022 OFFICIAL RECORD CITY SECRETARY FT.WORTH,TX STORMWATER FACILITY MAINTENANCE AGREEMENT 5 Rev.03/01/2022 BIN STATE OF TEXAS § COUNTY OF TARRANT § This instrument was acknowledged before me on 12/19/2022 by Dana Burghdoff, Assistant City Manager of the City of Fort Worth, on behalf of the City of Fort Worth. Digitally signed by Bichson Bichson Nguyen 14R BICH SON THI NGUYEN Nguyen Date:2022.12.20 Notary Public 16:58:46-06'00' STATE OF TEXAS Notary I.D. 133389224 Notary Public, State of Texas My Comm.Exp.Oct. 13,2025 STATE OF § COUNTY OF V( AV1S_ § BEFORE ME, the undersigned authority, a Notary Public in and for the State of on this day perso{ all appeared w 1\\k?YM 'M. ' QXIC` V1n 1cY1� 1v1 V� �a.1r o}T�Ouko% w (name), u,(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 ` )AASM nMlS-k U _C. (entity), a S�C�S �IIMI � �1a�11\�t,r C ntity type) and in the capacity therein stated. GIVEN UNDER MY.HAND AND SEAL OF OFFICE this day of _, 20 2�a . Notary Public, State ofTucarc, Y CHEYENNE WOODLEY SPP• CiB�ii :Notary Public,State of Texas yf +v Comm. Expires 10-23-2023 '6e1°1w w0 Notary ID 132223413 STORMWATER FACILITY MAINTENANCE AGREEMENT 6 Rev.03/01/2022 BN EXHIBIT "A" INSERT LEGAL DESCRIPTION STORMWATER FACILITY MAINTENANCE AGREEMENT 7 Rev.03/01/2022 BIN EXHIBIT EXHIBIT "A " PERMANENT STORM WATER DE TEN TION FACILITY EA SEMEN T A PART OF LOT 99—R, BLOCK 7—R, FIELDS— WELCH ADDITION CITY OF FORT WORTH, TARRANT COUNTY, TEXAS AZA 100. o � " 0 100' 0 0 w SCALE FEET — '"- '°°' WEST DASHWOOD STREET a (50' WIDTH RIGHT-OF-WAY) u I — F - - - - - - - - - - —i Q L J LU c? W — �� — W I I PERMANENT STORM S89'26'27"W D }N ZWATER DETENTION 2.51' Q < FACILITY EASEMENT LU � a(/ I Z o O I z0 = V) W z POINT OF ( z C) o I (BEGINNING o Z o Z � I I NI W w I LOT 11—R, BLOCK 7—R V o = m I FIELDS-WELCH ADDITION 3 Q tO _ I COUNTY CLERK'S a I a DOCUMENT NO. D222180454 Mo I J I P.R.T. .T. z A L 1 _ POINT OF COMMENCING N WEST ROSEDALE STREET Q (VARIABLE WIDTH RIGHT-OF-WAY) " 0 0 T ° F STfR�^y ............................... y ALAN MOORE °°°°°°°°°°°°°°°° 9 ova es37o z S° DUNAWAY o A metes and bounds description of even date accompanies drawing. 550BaileyAvenue•Suite400•Fort Worth,Texas76107 September 8, 2022 Tel:817.335.1121 PAGE 1 OF 5 � TEXAS REGISTERED SURVEYING FIRM NO.10098100 DATE: SEPTEMBER 8, 2022 JOB NO. B007807.003 0 EXHIBIT "A " PERMANENT STORM WATER DE TEN TION FACILITY EA SEMEN T A PART OF LOT 99—R, BLOCK 7—R, FIELDS— WELCH ADDITION CITY OF FORT WORTH, TARRANT COUNTY, TEXAS UTILITY EASEMENT - 6 24' ACCESS & UTILITY EASEMENT NO. 25 81 0 2022� CABINET B, SLIDE 2555 P.R.T.C.T. 13.50' 'O I I SANITARY SEWER EASEMENT 9,711 SQUARE FEET COUNTY CLERK'S DOCUMENT 0.2229 ACRE NO. D222180454 PERMANENT STORM o P.R.T.C.T. 15.00' WATER DETENTION 0 50' UTILITY EASEMENT FACILITY EASEMENT w VOLUME 388-179, PAGE 25 P.R.T.C.T. SCALE FEET 1"= 50' a N89'26'27"E 317.50' 0 15.00' N00'33'33"W S89'26'27"W S00'33'33"E w 35.00' 62.00' I 19.25' S89'26'27"W L1 5 75 L2 S3'33"E S89'26'27"W 1871.00' 1 POINT OF 0 61.49' I BEGINNING N45'00'00"W 13.24' WEST 76.47' 7 5o I I I S89'26'27"W 1 11 42.51' 3 I I 0 15.00' I IG�� 12.00' I i i SANITARY SEWER EASEMENT I I 00 COUNTY CLERK'S DOCUMENT 1i 5.00' NO. D222180454 P.R.T.C.T. I I W a LOT 11-11, BLOCK 7-11 g t FIELDS—WELCH ADDITION o WATER EASEMENT I M COUNTY CLERK'S DOCUMENT M COUNTY CLERK'S DOCUMENT N0. D222180454 0 o NO. D222180454 P.R.T.C.T. I I z N P.R.T.C.T. N45'00'00"EQjj ' SEE DETAIL N89"25'42"E PAGE 3 Line Table N45'00'00"E 9L/,/—DRAINAGE EASEMENT Line Y CLERK'S DOCUMENT Bearing Distance N89"25'21"E 4.322180454Number .T. S45'00'00"E 6.27' DRAINAGE EASEMENT " COUNTY CLERK'S DOCUMENT "00'00 W L2 EAST 79.35' Q NO. D222180454 6' N P.R.T.C.T. N0034'52"W 2.53' a SET 5/8" IRON ROD WITH "IT—]_j S89*25'42"W 21.72' 9 CAP STAMPED 'DUNAWAY ASSOC' S89"25'21"W 16.66' S45'00'00"W 5.73' FQ"TF WEST ROSEDALE STREET sss•2521 W s.s7 �P�G\STe�F4-' (VARIABLE WIDTH RIGHT—OF—WAY) 10 "a """" aaa"""""""aaaaaaaa" " �ALAN MOORE z ............................... DUNAWA 2�°5o v �" o A metes and bounds description of "" even date accompanies drawing. 550 Bailey Avenue•Suite400•Fort Worth,Texas76107 Tel:817.335.1121 PAGE 2 OF 5 TEXAS REGISTERED SURVEYING FIRM NO.10098100 September 8, 20 DATE: SEPTEMBER 8, 2022 JOB NO. B007807.003 0 EXHIBIT "A " PERMANENT STORM WATER DE TEN TION FACILITY EA SEMEN T A PART OF LOT 99-R, BLOCK 7-R, FIELDS- WELCH ADDITION CITY OF FORT WORTH, TARRANT COUNTY, TEXAS 3 a 4 0 0 N 0 w I WATER EASEMENT COUNTY C ERK'80O54 MENT 2224 P.R.T.C.T. DRAINAGE EASEMENT COUNTY CLERK'S DOCUMENT�� NO. D222180454 = P.R.T.C.T. DRAINAGE EASEMENT o COUNTY CLERK'S DOCUMENT NO. D222180454 o P.R.T.C.T. I OHO N45'00'00"E N89'25'42"E lb- 9.25' 21.72' N89'25'21"E N00'34'52"W 32 S89'25'42"Vf N 2.53' 21.72' 0 S89-25'21"W S45'00'00"W S45'00'00"W 16.66' 5.73' 10.96' 0 S89'25'21"W o SET 5/8" IRON ROD WITH , CAP STAMPED "DUNAWAY ASSOC" 8•87 a `v a WEST ROSEDALE STREET (VARIABLE WIDTH RIGHT-OF-WAY) Q 0 10' N N SCALE FEET 1"= 10' 06 0 a� OF T """" """" """""""""""""""""""""" " ALAN 3 tiFEM9 9RPaK,as """"""aa a s a 5537"°DUNAWAY o A metes and bounds description of v even date accompanies drawing. 550BaileyAvenue•Suite400•Fort Worth,Texas76107 Tel:817.335.1121 PAGE 3 OF 5 TEXAS REGISTERED SURVEYING FIRM NO.10098100 September 8, 2022 DATE: SEPTEMBER 8, 2022 JOB NO. B007807.003 0 METES AND BOUNDS BEING a tract of land situated in the William Welch Survey,Abstract No.1644,City of Fort Worth,Tarrant County,Texas,being a part of Lot 11-R,Block 7-R,Fields-Welch Addition,an Addition to the City of Fort Worth,according to the plat recorded in County Clerk's Document Number D222180454,Plat Records,Tarrant County,Texas,being a part of those certain tracts of land described by deeds to Dashrose LLC,recorded in County Clerk's Document Numbers D217209477,D217209554 and D218136323,Deed Records,Tarrant County,Texas and being a portion of South Adams Street and Alley that was vacated by City of Forth Worth Ordinance Number 25581-06-2022,said tract of land being more particularly described by metes and bounds as follows: COMMENCING at a point for the northerly southeast corner of said Lot 11-R,Block 7-R,Fields-Welch Addition,being in the north end of a corner clip located at the northwest intersection of Washington Avenue(a 60'wide)and West Rosedale Street(a variable width)and in the west right-of-way line of said Washington Avenue; THENCE North 00 degrees 34 minutes 39 seconds West,with the west right-of-way line of said Washington Avenue and with the east line of said Lot 11-R,Block 7-R,Fields-Welch Addition,a distance of 206.93 feet to a point for corner; 4 N THENCE South 89 degrees 26 minutes 27 seconds West,departing the west right-of-way line of said Washington Avenue and crossing o said Lot 11-R,Block 7-R,Fields-Welch Addition,a distance of 42.51 feet to the POINT OF BEGINNING; THENCE South 89 degrees 26 minutes 27 seconds West,continuing across said Lot 11-R,Block 7-R,a distance of 187.00 feet to a point for corner; 0 THENCE South 00 degrees 33 minutes 33 seconds East,continuing across said Lot 11-R,Block 7-R,a distance of 15.75 feet to a point for 0 corner; THENCE South 89 degrees 26 minutes 27 seconds West,continuing across said Lot 11-R,Block 7-R,a distance of 62.00 feet to a point for Q corner; 0 0 THENCE South 45 degrees 00 minutes 00 seconds East,continuing across said Lot 11-R,Block 7-R,a distance of 6.27 feet to a point for corner; 0 THENCE East,continuing across said Lot 11-R,Block 7-R,a distance of 79.35 feet to a point for corner; o, 3 THENCE South 00 degrees 33 minutes 40 seconds East,continuing across said Lot 11-R,Block 7-R,a distance of 183.12 feet to a point for ° corner; 0 T THENCE South 45 degrees 00 minutes 00 seconds West,continuing across said Lot 11-R,Block 7-R,a distance of 10.96 feet to a point for corner; 0 o THENCE South 89 degrees 25 minutes 42 seconds West,continuing across said Lot 11-R,Block 7-R,a distance of 21.72 feet to a point for corner; a o THENCE South 45 degrees 00 minutes 00 seconds West,continuing across said Lot 11-R,Block 7-R,a distance of 5.73 feet to a point on the north right-of-way line of West Rosedale Street; THENCE South 89 degrees 25 minutes 21 seconds West,along the north right-of-way line of West Rosedale Street,a distance of 8.87 a feet to a point from which a set 5/8-inch iron rod with cap stamped"DUNAWAY ASSOC"bears South 89 degree 25 minutes 21 seconds West,a distance of 16.66 feet; Q N Q D AWAY J 0. B007807.003 PAGE 4 OF 5 N 0 c6 EXHIBIT"A" Alan NA.ogre Registered Professional Land Surveyor Texas Registration No. 5537 amoore@dunaway.com c o'er Fo o s September 8, 2022 °°°°°°°°°°°°°°°°°°°°°°°°°°°°°°° ALAN MOORE z ...... ...........°O °°°°°°°°° / h �O 5537 �,P;°°�° PERMANENT STORM WATER ;Ess am�°°°y DETENTION FACILITY EASEMENT D U NAWA a 550 Bailey Avenue•Suite 400•Fort Worth,Texas 76107 S°U R An Addition to the City of Fort Worth, Tel'817.335.1121 according to the plat recorded in County TEXAS REGISTERED SURVEYING FIRM NO.10098100 Clerk's Document Number D222180454, City of Fort Worth, Tarrant County, Texas. 0 THENCE North 00 degrees 34 minutes 52 seconds West,departing the north right-of-way line of West Rosedale Street,and crossing said Lot 11-R,Block 7-R,a distance of 2.53 feet to a point for corner; THENCE North 89 degrees 25 minutes 21 seconds East,continuing across said Lot 11-R,Block 7-R,a distance of 4.32 feet to a point for corner; THENCE North 45 degrees 00 minutes 00 seconds East,continuing across said Lot 11-R,Block 7-R,a distance of 9.25 feet to a point for corner; THENCE North 89 degrees 25 minutes 42 seconds East,continuing across said Lot 11-R,Block 7-R,a distance of 21.72 feet to a point for corner; THENCE North 45 degrees 00 minutes 00 seconds East,continuing across said Lot 11-R,Block 7-R,a distance of 6.82 feet to a point for corner; 4 THENCE North 00 degrees 33 minutes 40 seconds West,continuing across said Lot 11-R,Block 7-R,a distance of 176.07 feet to a point for 0 N corner; 0 THENCE West,continuing across said Lot 11-R,Block 7-R,a distance of 76.47 feet to a point for corner; THENCE North 45 degrees 00 minutes 00 seconds West,continuing across said Lot 11-R,Block 7-R,a distance of 13.24 feet to a point for corner; 0 THENCE South 89 degrees 26 minutes 27 seconds West,continuing across said Lot 11-R,Block 7-R,a distance of 61.49 feet to a point for o corner; THENCE North 00 degrees 33 minutes 33 seconds West,continuing across said Lot 11-R,Block 7-R,a distance of 35.00 feet to a point for Q corner; 0 THENCE North 89 degrees 26 minutes 27 seconds East,continuing across said Lot 11-R,Block 7-R,a distance of 317.50 feet to a point for corner; 0 o THENCE South 00 degrees 33 minutes 33 seconds East,continuing across said Lot 11-R,Block 7-R,a distance of 19.25 feet to the POINT OF o, BEGINNING and CONTAINING a computed area of 9,711 square feet or 0.2229 acres of land. 3 E a` T 5 �i 0 i 0 0 m 0 i 0 a a NOTES:The basis of bearings for this Easement is the Texas Coordinate System of 1983,North Central Zone,4202,based upon GPS measurements,according to the GPS reference Network. The metes and bounds description contained herein was compiled from information contained in recorded documents and does not reflect the results of an on-the-ground survey. A drawing of even date accompanies this metes and bounds description. N Q DU AWAY J B 0. B007807.003 PAGE 5 OF 5 N 0 c6 EXHIBIT"A" Alan Mnn— Registered Professional Land Surveyor � . F° TF Texas Registration No. 5537 `Po G S TER �9 amoore@dunaway.com co September 8, 2022 °°°°°°°°°°°°°°°°°°°°°°°°°°°°°°° ALAN MOORE z ...................°°°°°°°°°° /�DUNAWA �° �055S\ �,P;°°)° PERMANENT STORM WATER ��' 9yD°;Ess�°°°yam DETENTION FACILITY EASEMENT a 550 Bailey Avenue•Suite 400•Fort Worth,Texas 76107 S°U R An Addition to the City of Fort Worth, Tel'817.335.1121 according to the plat recorded in County TEXAS REGISTERED SURVEYING FIRM NO.10098100 Clerk's Document Number D222180454, City of Fort Worth, Tarrant County, Texas. 0 EXHIBIT `B" DESIGN PLANS STORMWATER FACILITY MAINTENANCE AGREEMENT 8 Rev.11/17/2016 30b'>iOb'd N0I1`dONf103 -�o — _ L909L Xl'Hl2lOM ibO=l"IS 31d03SOb sio 3NIO1a31N J0 10OHos notCD a OD SAW Zoo @1 ox�gro a �a �' a `;5= I mo mo a�i a 11, I w� o2 y 3® I I wW o yyr o o I I I 4 ...----•�- �_---- .do-.,, __.. __ w o m--�_ , � ' g m a xm�mvxnnl I I I � 3nN3A Ntl 019NIHStl1N 24 5 � I O j1 • I� 'I I � I �I I u I r v it I I IIII I r I 11 I W I � � � 9 1 oe .�4 I _ • I4m p 4 �m oa (d J P a � I I I 0 0� _ _______ ----- m - -- -- -- �_ - --- � I o I �e I I �I i yy I � ll II I l7 > Wei z I I C I non y ry - ool 3 o a�� a�� a o„o ^ a C I gm I $ � �� I I 5 1 I I I I i II I I aoW I I I I l aw nos &zo I I li ore n u m3 3` Am ¢ II I i 5 R HM a 11 II II I �r�r ��r,�rrrrrrrrrrr � �I 4111 I . . 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V H 2 F- J 't w Q ❑o00000❑ > Q Q I I U) U) z y t I LLQ ❑.....0000 I U O ¢ Q Z wmH I ❑..0000❑ )Of Z p J J LL = Z £ U a ¢ W \ ❑0000❑ af / W N Z W 2 O u m \\ Q 0 iri w v~i o ww W W o w z = w > t o Y j '�--- a ~O Z m �a �H a a (D d Z W 0-' WU' U)W Z W U N M O L) O � pC M Q z Z w F CL W 3 z U O W CJ LL W w U E Z m �P� o � N m N M V Z N cai LL � W .- z � o U M o a o U � � County iarran, Off-MODIFIED RATIONAL METHOD Existing Runoff Coefficient 0.5 Proposed Runoff Coefficient 0.88 Area 0.642 Acres Area 1.82 Acres Time of Concetration 10.1 Min. Time of Concetration 5 Min. 1 Year Runoff 1.30 CFS 1 Year Runoff 8.50 CFS 5 Year Runoff 1.84 CFS 5 Year Runoff 11.35 CFS 100 Year Runoff 2.96 CFS 100 Year Runoff 17.76 CFS Qa,lyr 1.30 CFS Table SAS!Tarrant For 1 Yr Return Period:e=0.8217,b=43.653,d=8 Qa,syr= 1.84 CFS County Rainfall For 5 Yr Return Period:e=0.8142,b=71.154,d=12 Qa,ioo yr 2.96 CFS Data For 100 Yr Return Period:e=0.7798,b=110.202,d=14 Td,= 42.93 Min. For 1 Yr Return Period:a=95.84,b=13.43 Table 1.18 Rainfall TdS= 56.65 Min. For 5 Yr Return Period:a=170.81,b=19.44 Factors Tdroo= 67.84 Min. For 100 Yr Return Period:a=322.07,b=24.39 P1d1= 1.24 in. PiROA- 1.77 in. Prds= 2.15 in. Piso-s= 2.95 in. Prdioo= 4.02 in. Piso-ioo= 5.44 in. VPrdm-y1= 5149.86 Cu.Ft VMax1 7383.21 Cu.Ft VPreI-inary5= 8824.21 Cu.Ft VMas= 12135.53 Cu.Ft VPreuminaryioo= 16302.17 Cu.Ft VMaxioo= 22066.01 Cu.Ft 1.5.2 Design Equations The design of detention using the Modified Rational Method is presented as a non-iterative approach suitable for spreadsheet calculation(Debo 8 Reese,2003). The allowable release rate can be determined from: Q.=C.I A (1.26) where= Q. = allowable release rate(cfs) C. = predevelopment Rational Method runoff coefficient i = rainfall intensity for the corresponding time of concentration(inlhr) A = area(acres) The critical duration of storm,the time value to determine rainfall intensity,at which the storage volume is maximized,is: Tit =. 2CAab (1.27) Q - b e where: Td = critical storm duration(min) Q. = allowable release rate(cfs) C = developed condition Rational Method runoff coefficient A = area(acres) a,b = rainfall factors dependent on location and return period taken from Table 1.18 The required storage volume,in cubic feet can be obtained from the equations below: Vpm&niran,=60 [CAa-(2CabAQa)112*(Oa/2)(b-tc)1 (1.28a) Vi-=Vprelim,n.nry' Pradpw (1.28b) where: Vo,.,,,,Y,,,,y = preliminary required storage(ft) Vr,,.,, = required storage(ft) t. = time of concentration for the developed condition(min) P,. = 3-hour(180-minute)storm depth(in) P. = storm depth for the critical duration(in) all other variables are as defined above The equations above include the use of an adjustment factor to the calculated storage volume to account for under sizing. The factor (PeedPd) is the ratio of the 3-hour storm depth for the return frequency divided by the rainfall depth for the critical duration calculated in Equation 1.27 Disclaimer:This spreadsheet tool has been prepared to assist the applicant in preparing calculations for small sites in accordance with the City of FortWorth Criterial Manual(see section 3.4.1.of the iSWM Criteria Manaual regarding limitations on use of the Modified Rational Method) The applicant is responsible for ensuring that submitted calculations are correct. Date: 6/16/2022 Project Name: DashRose/TCU SOM p%1F-NTECH GINEERED SOLUTIONS City/County: CMP: Underground Detention System State: Storage Volume Estimation Designed By: Company: -=Adjustable Input Cells Telephone: Contech Engineered Solutions,LLC is pleased to offer the following estimate of storage volume for the above named project. The results are submitted as an estimate only,without liability on the part of Contech Engineered Solutions,LLC for accuracy or suitability to any particular applicaton and are subject to verification of the Engineer of Record. This tool is only applicable for rectangular shaped systems. Summary of Inputs System Information Backfill Information Pipe&Analysis Information Out-to-out length(ft): 317.5 Backfill Porosity(%): ° System Diameter(in): Out-to-out width(ft): 20.1 Depth Above Pipe(in): 0 Pipe Spacing(in): 21 Number of Manifolds(ea): 1.0 Depth Below Pipe(in): 0 Incremental Analysis(in): 6 Number of Barrels(ea): 4.0 Width At Ends(ft): .0 System Invert(Elevation): 630.32 Width At Sides(ft): 1.0 Storage Volume Estimation System Pipe I Stone Total System Miscellaneous Incremental Cumulative Incremental Cumulative Incremental Cumulative Percent Open Ave.Surface De=(fftt) levation(ft) Storage(cf) Storage(cf) Storage(cf) Storage(cf) Storage(cf) Storage(cf) I Storage(%) Area(sf) 0.00 630.32 0.0 0.0 0.0 0.0 0.0 0.0 0.0% 2,827.6 0.50 630.82 1,075.9 1,075.9 983.4 983.4 2,059.3 2,059.3 52.2% 4,703.1 1.00 631.32 1,818.7 2,894.6 686.3 1,669.7 2,505.0 4,564.4 63.4% 5,248.9 1.50 631.82 2,131.5 5,026.1 561.2 2,230.9 2,692.7 7,257.0 69.3% 5,480.0 2.00 632.32 2,225.6 7,251.7 523.5 2,754.5 2,749.1 10,006.2 72.5% 5,480.0 2.50 632.82 2,131.5 9,383.1 561.2 3,315.7 2,692.7 12,698.8 73.9% 5,248.9 3.00 633.32 1,818.7 11,201.9 686.3 4,002.0 2,505.0 15,203.8 73.7% 4,703.1 3.50 633.82 1,075.9 12,277.8 983.4 4,985.4 2,059.3 17,263.2 71.1% 2,827.6 These results are submitted to you as a guideline only,without liability on the part of CONTECH Engineered Solutions,LLC for accuracy or suitability to any particular application,and are subject to your verification. Date: 6/16/2022 Project Name: DashRose/TCU SOM p%1F-NTECH GINEERED SOLUTIONS City/County: CMP: Underground Detention System State: Storage Volume Estimation Designed By: Company: -=Adjustable Input Cells Telephone: Contech Engineered Solutions,LLC is pleased to offer the following estimate of storage volume for the above named project. The results are submitted as an estimate only,without liability on the part of Contech Engineered Solutions,LLC for accuracy or suitability to any particular applicaton and are subject to verification of the Engineer of Record. This tool is only applicable for rectangular shaped systems. Summary of Inputs System Information Backfill Information Pipe&Analysis InforFF Out-to-out length(ft): 130.5 Backfill Porosity(%): ° System Diameter(in): Out-to-out width(ft): 14.9 Depth Above Pipe(in): .0 Pipe Spacing(in): Number of Manifolds(ea): 1.0 Depth Below Pipe(in): .0 Incremental Analysis(in): Number of Barrels(ea): 3.0 Width At Ends(ft): .0 System Invert(Elevation): Width At Sides(ft): 1.0 Storage Volume Estimation System Pipe I Stone Total System Miscellaneous Incremental Cumulative Incremental Cumulative Incremental Cumulative Percent Open Ave.Surface De=(fftt) levation(ft) Storage(cf) Storage(cf) Storage(cf) Storage(cf) Storage(cf) Storage(cf) I Storage(%) Area(sf) 0.00 630.32 0.0 0.0 0.0 0.0 0.0 0.0 0.0% 894.4 0.50 630.82 333.8 333.8 313.7 313.7 647.4 647.4 51.6% 1,476.2 1.00 631.32 564.2 898.0 221.5 535.2 785.7 1,433.2 62.7% 1,645.5 1.50 631.82 661.2 1,559.2 182.7 717.9 843.9 2,277.1 68.5% 1,717.2 2.00 632.32 690.4 2,249.6 171.0 888.9 861.4 3,138.5 71.7% 1,717.2 2.50 632.82 661.2 2,910.8 182.7 1,071.6 843.9 3,982.4 73.1% 1,645.5 3.00 633.32 564.2 3,475.0 221.5 1,293.1 785.7 4,768.1 72.9% 1,476.2 3.50 633.82 333.8 3,808.8 313.7 1,606.8 647.4 5,415.6 70.3% 894.4 These results are submitted to you as a guideline only,without liability on the part of CONTECH Engineered Solutions,LLC for accuracy or suitability to any particular application,and are subject to your verification. 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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. The stormwater quality device shall be cleaned and cleared of all sediment shortly after project completion. Generally, a sump-vacuum truck is the most convenient method of removing the captured sediment and floatables from large underground structures. Floatables and oil should be removed in a separate procedure prior to the removal of accumulated sediment from the bottom of the underground storage chambers. The structural and functional integrity of the Facility shall be maintained at all times by following the manufacturer recommendations for maintaining the system. Flushing of the system by hose or other method that may move sediment to the downstream storm sewer system is unacceptable. Periodic silt removal shall occur when standing water conditions occur or the underground storage volume is reduced by more than 10%. This maintenance should be performed as needed based on inspection but is recommended annually. In addition, corrective measures are required any time a basin does not drain completely within 72 hours of cessation of inflow. 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. 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. 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, silt, litter and debris removal dates. Document any replacement or maintenance of structures. • 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 1 Rev.3/20/2019 Exhibit "D" Stormwater Underground Detention Maintenance Checklist FREQUENT INSPECTION DATE REPAIRS REPAIRS NOTES REQUIRED MADE Remove trash and debris Inspect grates and structures Blocked, Clogged outlet Clean outlet, dispose structure of blockage offsite MINOR INSPECTION Accumulated Silt Remove by hand if Standing Water minor, use vacuum truck if necessary Oil is acumulated inside vault/piping MAJOR INSPECTION Structural damage to pipe, vault, access hatch, ladder Evidence of Tree root Cut and remove roots. intrusion Restore structural integrity of system Damaged Outlet Structure Repair or replace or Inlets any damaged structures in kind. Replace pavement. Damaged Pavement,noticable sinking Contact Engineer to access causes E -ERSNIIIH � mJ TUCKER J A N 00 Q m PEN SY ANI PRU TT C NN N C N C CAN ON LE DA LEUDA COOPER �,l TE #P�p UMBO T A WORTH � PULA KI D HW OD W ROSE[ Q RO E A E LJ OL A D R z_ z o z Q z m w Q z o � 0 � cn M GN LI A o �- Q w z z m z c� o _ j M RP Y M RPHY w — L O J w M RTE Q _ � � U < INGR M V m w z = M D X KAA F nX a VICINITY MAP a a a NOT TO SCALE a TCU SCHOOL OF MEDICINE LL Q N CPN 104053 N N MAPSCO NO. 76M COUNCIL DISTRICT 9 '~ OWNER/DEVELOPER: z DU NAWAY TEXAS CHRISTIAN UNIVERSITY TCU BOX 297800 550 Batley Avenue•Suite 400•Fort Worth,Texas 76107 FORT WORTH,TEXAS 76129 m Te1:817.335.1121 PHONE:(817)257-6467 o (TX REG.F-1114) 0 a