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HomeMy WebLinkAboutContract 53175 J' p� S' CITY SECRETARY CONTRACTNO. 531 _4b. � a 'OE # ��9.9 t, � STORMWATER FACILITY MAINTENANCE AGREEMENT ] THIS AGREEMENT, made and entered into this day of , by and between Northstar Farms, Incorporated, acting by and through Randal S. Ware, Vice President, 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 an approximately 0.2873 acre tract located in the J. Martin Survey, Abstract 1017, Tarrant County, Texas according to the deed recorded as Instrument No. D219239249, 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 Southgate Marketplace Phase 1 (CPN 102205 and SWM-2019-0245) hereinafter called the "Plan", which is expressly made a part hereof, as approved or to be approved by the City and the Landowner provides for management of Stormwater 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 STORMWATER FACILITY MAINTENANCE AGREEMENT Rev.11/17/2016n� FT. WORTH, TX 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. 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 STORMWATER FACILITY MAINTENANCE AGREEMENT 2 Rev.11/17/2016 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 ANY LIABILITY IN THE EVENT THE FACILITY FAILS TO OPERATE PROPERLY. LANDOWNER COVENANT AND AGREE AND DOES HEREBY INDEMNIFY, HOLD HARMLESS AND DEFEND STORMWATER FACILITY MAINTENANCE AGREEMENT 3 Rev.11/17/2016 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 owners association. [SIGNATURE PAGE FOLLOWS] STORMWATER FACILITY MAINTENANCE AGREEMENT 4 Rev.11/17/2016 Executed thi-,di7day ofAlsk'0,7 Northstar Farms,Incorporated City of Fort Worth ame: Ra dal S.Ware A Assistant City anag r Title: Vice President Approved as to Form and Legality �ssistantrity Att ey ATTEST City S!ecreyt// F� N, STORMWATER FACILITY MAINTENANCE AGREEMENT 5 Rev.11/17/2016 0F F, C; L k� 11031 STATE OF TEXAS § COUNTY OF TARRANT § i This instrument was acknowledged before me on �behal by -�`� ��3esi ,Assistant City Manager of the City of Fort Worth, oty of Fort Worth. PPy p„ MARIA S.SANCHEZ *: *' My Notary ID#2256490 Notai Public, State of Texas Expires December 19,2021 STATE OF TEXAS § COUNTY OF TARRANT § Before me, the undersigned authority on this day of 20LI personally appeared known to me to be the person whose name is subscribed to the foregoing instrument and aclmo vledged to me that the same is the act of and that he executed the same as its and as the act of such and for the purposes and consideration expressed in the foregoing instrument. CERAH KUSS NOTARY PUBLIC39-1 ($my STATE OF TEXAS Notary Public,Stateof Texas Comm.Expirres802-26-2023 STORMWATER FACILITY MAINTENANCE AGREEMENT 6 Rev.11/1712016 TL pp IE u'i) YSV r;, a 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. Emilio G. c ez Planning Manager MrL FT WMI'`MF ii< EXHIBIT "A" BEING a 12,515 square foot tract of land situated in the J. Martin Survey, Abstract Number 1017, being a portion of a tract of land conveyed to Northstar Farms as recorded in Deed Document Number D214268891, Deed Records, Tarrant County, Texas and being more particularly described by metes and bounds as follows: COMMENCING from a Brass Monument Disk found for an interior corner of said Ware Vista tract, same being a point on the east right of way line of South Freeway (Variable Width Right of Way); THENCE South 24 degrees 57 minutes 05 seconds West, with the east right of way line of said South Freeway, a distance of 45.15 feet to a point for corner, same being THE POINT OF BEGINNING; THENCE South 73 degrees 16 minutes 41 seconds East departing the east right of way line of said South Freeway, over and through said Northstar Farms tract, a distance of 40.44 feet to a point for corner; THENCE Over and through said Northstar Farms tract to a point for corner; South 19 degrees 37 minutes 36 seconds East, a distance of 44.43 feet; South 71 degrees 04 minutes 38 seconds East, a distance of 140.83 feet; North 79 degrees 09 minutes 25 seconds East, a distance of 10.26 feet; South 68 degrees 46 minutes 13 seconds East, a distance of 29.34 feet; South 37 degrees 32 minutes 40 seconds East, a distance of 28.04 feet; South 74 degrees 19 minutes 10 seconds East, a distance of 69.97 feet; North 31 degrees 21 minutes 03 seconds East, a distance of 97.44 feet; North 21 degrees 48 minutes 49 seconds East, a distance of 72.16 feet; North 70 degrees 02 minutes 37 seconds East, a distance of 20.25 feet; North 22 degrees 40 minutes 05 seconds West, a distance of 27.85 feet; North 67 degrees 19 minutes 55 seconds East, a distance of 15.00 feet; South 22 degrees 40 minutes 05 seconds East, a distance of 28.56 feet; North 70 degrees 02 minutes 37 seconds East, a distance of 11.08 feet; STORMWATER FACILITY MAINTENANCE AGREEMENT 7 Rev.11/17/2016 EXHIBIT "A" South 42 degrees 49 minutes 37 seconds East, a distance of 12.07 feet and being the beginning of a curve to the right with a radius of 72 degrees, a central angle of 43 degrees 44 minutes 33 seconds, a chord bearing and distance of South 74 degrees 58 minutes 54 seconds East, a distance of 53.64 feet, an arc length of 54.97 feet; South 53 degrees 06 minutes 28 seconds East, a distance of 14.04 feet; South 09 degrees 05 minutes 44 seconds West, a distance of 5.65 feet; South 53 degrees 06 minutes 28 minutes East, a distance of 35.94 feet and being the beginning of a curve to the right with a radius of 67.00 feet, a central angle of 62 degrees 38 minutes 31 seconds, a chord bearing and distance of South 21 degrees 47 minutes 13 seconds East, a chord distance of 69.66 feet, an arc length of 73.25 feet; North 09 degrees 32 minutes 02 seconds East, a distance of 96.33 feet and being the beginning of a curve to the right a radius of 67.00 feet, a central angle of 82 degrees 34 minutes 35 seconds, a chord bearing and distance of South 50 degrees 49 minutes 20 seconds West, a chord distance of 88.42 feet, an arc length of 96.56 feet; North 87 degrees 53 minutes 22 seconds West, a distance of 8.02 feet; South 09 degrees 05 minutes 44 seconds West, a distance of 5.04 feet; North 87 degres 53 minutes 22 seconds West, a distance of 43.57 feet; North 85 degrees 55 minutes 38 seconnds West, a distance of 51.80 feet; North 68 degrees 20 minutes 14 seconds West, a distance of 46.83 feet; North 47 degrees 21 minutes 01 seconds West, a distance of 30.23 feet; North 26 degrees 20 minutes 19 seconds West, a distance of 20.28 feet; North 72 degrees 38 minutes 02 seconds West, a distance of 167.10 feet; THENCE North 70 degrees 33 minutes 48 seconds West, a distance of 181.85 feet to a point for corner on the east right of way line of said South Freeway; THENCE North 14 degrees 17 minutes 52 seconds East, with the east right of way line of said South Freeway, a distance of 11.73 feet; THENCE North 24 degrees 57 minutes 05 seconds East, with the east right of way line of said South Freeway, a distance of 86.64 feet to THE POINT OF BEGINNING and containing 77, 080 square feet of land, more or less. STORMWATER FACILITY MAINTENANCE AGREEMENT 8 Rev.11/17/2016 EXHIBIT A OuTy F RFF� �, z o ro c VpZUMFT RO1C 1$p/T p 1 - � It N w u 0 4833 pp IV, �qY� O tip -' w —07 qGf $ n zxc P g g g y mCY)M Z n QQ QQ zA ,_ p •0 •D (755 r m0 0 is g p o� v tTJ B ° W ?t m m V "'�� ";mac �o o<n z3c"� $ r C :U Z m0y � < C..� `� zzo Zz o; r061 c o p v O D w ,� czm o 0 i n OOZZ —z1 vZ0m �`• m�a 0, �nA a Q Z Z zr"N 0\ Aa —I -1 :U ;0 �' r'�N a m N ri Y m 00000 0 gy E m 9 am,m nO O� 'n 0 � ZC u + Q ZKCZ naS m Zmmv ^Z^ z Z G G c Ul Qol Oy O co pp r V ��ii p qqrr of O s V Z A _� D 3 mmC rn r*i Z m 5 • O ON r CDG� � vo Z r E ?m �' G n Oc y A ry y, 2 a J A O o C r ij� y`�g yg W J > Jrn � �0 �jt Ti6 o lv1 < �_ 0 r_ ry II o 33 c+ Lk m P < Q.. C � m CA o Z� o N y V N V ' zm _ :5 Z O o m N 8 CZ N� h" ((; 6 6 G 5 Ocn 1y 3g roc cDoy � � � y 7yd PO y Lit ew O O C7 rZ' tr1 1 .•:o :• ST o Lon O m O �:* : G>', ray O Cr1 Cl1 L o y a CD 0 0 EXHIBIT B LOT 9 / / fL A BLOCK 1 / / , (F,P-19-068) / 30'PUBLIC ACCESS EASEMENT 724 ry (DOC.NO.XXXXX) 0 :60 120' b 45i UTILITY EASEMENT SCALE: LE: �I=6t I 15'PRIVATE STORM (DOC.NO.XXXXX) =y� \ DRAIN EASEMENT z \ (DOC.NO.XXXXX) S1i _O 0 ~ _ \ W Q V) alM 0n ),_ 30 2336 PRIVATE � 729 i a I STORM � �— MAINTENANCE RAMP LOT (15%MAX RUNNING (FPL1B--068) / ml / 113♦ 722 SLOPE-•-•'` '• �35. 2�o CROSS SOPE) 32"PRIVATE STORM FG 723.00 DETENTION POND OUTFALL w '' REFER TO DETAIL FG 712.05 SHEET 5 OF 8 EMERGENCY WEIR 11% 'sc SPILLWAY CROSS SECTION 1: 4 I (SHEET 4 OF 8) FG 711.05 I 4:1 FG 711.48 10' I 10'MAINTENANCE �z3 4'1 AREA(2%CROSS SLOPE) M >� 4:1 ,3_i s FG 711.88 aG I 'SECTION to ^ 712 I 713 714 fv 715 � 733 _ ^N ALL 42"PRIVATE N� GRADING STORM ` n�\ 4:1 MAX 15'PRIVATE STORM LOT I A' DRAIN EASEMENT BLOCK B16 (DOC.NO.XXXXX) (PP-17-018) PROP.PRIVATE DETENTION POND � PROP.PRIVATE DETENTION POND AND OVERFLOW EASEMENT AND OVERFLOW EASEMENT (DOC.NO.XXXXX) (DOC.NO.XXXXX) 02019 MANHARD CONSULTING, LTD. ALL RIGHTS RESERVED _ EXHIBIT B (1 OF 16) Hanha',rd SOUTHGATE MARKETPLACE PHASE I (SWIM-2019-0253) f f, L C�" DETENTION POND PLAN 12225 Greenville Avenue,Suite 1000.Dallas,TX 75243 ph:972.972.4250 manhard.com DRAWN BY: DATE: SCALE: CPN: Civil Engineers I Surveyors I Water Resource Engineers I Water&Waste Water Engineers Construction Managers I Environmental Scientists I Landscape Architects I Planners ELC 10-04-2019 1" = 60' 102205 Texas Board of Professional Engineers Registration No. F-18141 EXHIBIT B 7� -1+00 0+00 1+00 2+00 3+00 4+00 740 -i- - - - 740 735 735 EXISTING GRADE 730 — 730 725 - - - - - 724.00 - - - 725 723.03 p 100-YR, SEL=722.03 10, - 10t 720 MAINTENANCE -YRWL EL-739-.54 - -MAINTENANCE 720 1- AREA p 1-YR v EL=717.8s AREA (2% MAX) I - = -- _ (2% MAX) I _ 715 PROPOSED GRADE 1�0 _ LJ 715 (MAINTENANCE RAMP) SLOPE --- 710 710 705 705 -1+00 0+00 1+00 2+00 3+00 4+00 POND SECTION "A-A" H : 1" = 80' ; V: 1" = 8' 02019 MANHARD CONSULTING, LTD. ALL RIGHTS RESERVED 7Manhard EXHIBIT B (2 OF 16) SOUTHGATE MARKETPLACE PHASE I (SWM-2019-0253) C � L L I POND SECTION A-A 12225 Greenville Avenue,Suite 1000,Dallas,TX 75243 ph:972.972.4250 manhard.com DRAWN BY: DATE: SCALE: CPN: Civil Engineers I Surveyors I Water Resource Engineers I Water&Waste Water Engineers Construction Managers I Environmental Scientists I Landscape Architects I Planners ELC 10-03-2019 1" = 801 102205 Texas Board of Professional Engineers Registration No. F-18141 EXHIBIT B -1+00 0+00 1+00 2+00 3+00 4+00 740 740 735 735 -- 10' - - - MAINTENANCE - 730 AREA - 730 (2% MAX) --- - EXISTING GRADE ' I 725 724.00 724.00 725 - - - -- 10 -YR WSEL 722.03 __ 10� I _____ �_ MAINTENANCE 720 _ -Y-R-v„�EL 719-.5 AREA 720 p 1 YR WSEL T 717.88 (2% MAX) PROPOSED GRADE =_ 715 _ i 715 j 710 -� - - - � - - - - 710 705 - - - 705 -1+00 0+00 1+00 2+00 3+00 4+00 POND SECTION "B-8" H : 1" = 80' ; V: 1" = 8' ©2019 MANHARD CONSULTING, LTD. ALL RIGHTS RESERVED 7H .ard EXHIBIT B (3 OF 16) an SOUTHGATE MARKETPLACE PHASE I (SWM-2019-0253) POND SECTION B-B 12225 Greenville Avenue,Suite 1000,Dallas,TX 75243 ph:972.972.4250 manhard.com DRAWN BV: DATE: SCALE: CPN: Civil Engineers I Surveyors I Water Resource Engineers I Water&Waste Water Engineers Construction Managers I Environmental Scientists I Landscape Architects I Planners ELC 10-03-2019 1" = 80' 102205 Texas Board of Professional Engineers Registration No. F-18141 EXHIBIT B 30' PRIVATE DRAINAGE EASEMENT MAX. SPREAD= 26' SMOOTH EARTHEN CHANNEL n=0.020 100 YR WSEL SLOPE=0.75% D=0.97' -90 2 FT. 0.97'MAX DEPTH - - - - - - - - L 4:1 SIDE SLOPE 18' BOTTOM WIDTH 4:1 SIDE SLOPE Q100=105.4 cft Vmax= 5.51 ft/s Dmax= 0.97 ft POND OVERFLOW PATH CROSS SECTION (THROUGH LOT 8) (TYPICAL) 735 0+00 1+00 2+00 3+00 735 i 6"FREEBOARD FOR CLGGED SCENARIO- P 726.0' 730 = 100-YR CLOGGED— � --— ---- -' SCENARIO WSEL=725.46' I PROPOSED GRADE 2.3%o 0.6 0 v —_ 725 ---- -- ----- - — - -- - - 725 LIMITS OF PRIVATE _ OVERFLOW EASEMENT 7201 720 0+00 1+00 2+00 3+00 EMERGENCY WEIR SPILL-WAY CROSS SECTION H: 1" = 60' V: 1" = 6' 02019 MANHARD CONSULTING, LTD. ALL RIGHTS RESERVED 7rHd EXHIBIT B (4 OF 16) anharSOUTHGATE MARKETPLACE PHASE I (SWM-2019-0253) ( 0" K' VF C T 1, V EMERGENCY WEIR SPILL-WAY 12225 Greenville Avenue,Suite 1000,Dallas,TX 75243 ph:972.972.4250 manhard.com DRAWN BY: DATE: SCALE: CPN: Civil Engineers I Surveyors I Water Resource Engineers I Water&Waste Water Engineers Con struction Managers Environmental Scientists Landscape Architects Planners ELC 10-03-2019 1" =60' 102205 Texas Board of Professional Engineers Registration No. F-18141 EXHIBIT B PROP.42"STORM LOT 30�., \, AT 0.50%(PRIVATE) BLOCK 2 STA 4+41.58 LINE"STM-2' (PP-17-018) (PN19-00064) INSTALL: STA 1+56.75 LINE"STM-2"PT LOT 7 1-5'x5'CATCH BASIN 23.25 FL 42"=712.41 BLOCK 2 Fl.=STA 0+83.60 LINE"STM-2" \ PROP.42"STM-2(PRIVATE) (PP- -018 FL42"=713.713.83(Ej INSTALL: 1-36"45'HORZ.BEND STA 2+18.13 LINE'STM-2"PC FL42"=712.04 r FL42"=712.71 f STA 0+79.35 LINE"STM-2" =STA0+00.01 LINE"STM-2X' INSTALL: 3wo 4,ap �V 1-STD.5'x5'(UNCTION BOX z F..72350 ' (/\J FL48'=71712.02(SW) 15'PRIVATE STORM \ FL42"=712.02(SW) 1+ PROP,24"STORM AT 11.63%(PRIVATE) j DRAIN EASEMENT PROP.42"STM-2(PRIVATE) FL 24-712.02(NW) — PROP.48'STM-2(PRIVATE) (DOC.NO.XXXXX) STA 0+37.03 LINE"STM-2A" 72S, INSTALL: STA 0+26.08 LINE"STM-2" 25'PUBLIC INSTALL: 1-24'45°HORZ.BEND ACCESS EASEMENT \ 1Tx00T SETP-FW-O 48'4:1 FL 24"_ .41 Q FL 48"=71135(SW) (DOC.NO.XXXXX) •]o PROP.24"STORM AT 11,63%(PRIVATE) PROP.CONCRETE RIPRAP STA 0+71.28 LINE"STM-2A" I\ @OUTFALL STM-2 �a INSTALL: REFER TO RIPRAP CALCS ON THE B 1-STD.10'CURB INLET EROISION CONTROL DETAILS TC=725.31 d50=8" FL 24"=720.31(S) PRIVATE L=18' � 45'SANITARY SEWER DETENTION AND I W=11.2' PROPOSED AND WATER EASEMENT OVERFLOW EASEMENT ENTION PON (DOC.NO.D \ (DOC.NO.XXXXX) q I t 30'PUBLIC ACCESS ACCESS EASEMENT I I �\. (DOC,NO.)OOM) \ LOT 8 I I C 8"SANITARY(PUBLIC) \ (FPL09068) 12"WATER(PUBLIC) 0 50 100 200 SCALE: 1"=100' VERTICAL SCALE: 1"=10' PRIVATE STORM "STM-2" 740 740 735 735 d — — x 62 730 730 725 725 u" 720 -�----— 720 715 715 Ai (MANAT_r1_ AT OSOis IMNVAln 710 5 r N�{{ °y=]i3+da 710 _ h- ,L, z 3 z3 ;=nao]2 ft FS 2 -- O�=10'S]ds 705 5= rt 705 -0+25 0+00 1+00 2+00 3+00 4+00 5+00 ©2019 MANHARD CONSULTING, LTD. ALL RIGHTS RESERVED W' Hd EXHIBIT B (5 OF 16) anharSOUTHGATE MARKETPLACE PHASE I (SWM-2019-0253) C 0 N S U L T I W 4%: STORM PLAN & PROFILE STM-2 12225 Greenville Avenue,Suite 1000,Dallas,TX 75243 ph:972.972.4250 manhard-com DRAWN BY: DATE: SCALE: CPN: Civil Engineers)Surveyors(Water Resource Engineers j Water&Waste Water Engineers Construction Managers I Environmental Scientists j Landscape Architects(Planners ELC 10-03-2019 1" = 100' 102205 Texas Board of Professional Engineers Registration No. F-18141 EXHIBIT B LOT B, STA 3-48.91 LINE"STM-3" BLOCK 1 INSTALL: (FP-19-068) I 1-STD.4'x4'JUNCTION BOX REFER TO TXDOT RECORD DRAWINGS"135-W-5 28 I P=724.89 ( ) STA 1+68.75 LINE"STM-3" tt 403" =STA 0+00.00 LINE"STM-3A" FL 30"=708.67(E) INSTALL: I FL 30"=708.67(W) STA 3+99.57 LINE"STM-3" I REFER TO LOTS 8 AND 9 INSTALL: 1-STD.S'x5'JUNCTI0N BOX CONSTRUCTION DRAWING PROP.24"STM-3A(PRIVATE) P=724.60 I FOR FINAL RIM ELEVATION 1-48=709. RZ.BEND EXISTING 24"RCP FL 30"=706.24(S) I '� FL 30"=709.22 IFL 30"=706.24(E) \ 15'PRIVATE STORM\� N (PUIBLIC) / FL24"=706.24IN) DRAIN EASEMENT REFER TO LOTS 8 AND 9 \ (DOC.NO.XXXXXX) CONSTRUCTION DRAWING — EXISTING 30'CURB INLET H FOR FINAL RIM ELEVATION PROP.36"STM-0\ EXISTING 24"RCP / i PROP CONCRETE AP (PUBLIC)I� 15'PRIVATE STORM j `RIP-R DRAIN EASEMENT PROP.30"STM-3(PRIVATE) I(DOC.NO.XXXXXX) \ ) � � EXISTING 48"RCP I / � • (PUBLIC) PROP.30"STM-3(PRIVATE) STA 0+80.63 LINE"STM-3" \ PROP.30"STM-3(PRIVATE) N •\ INSTALL: � \ I 1 I I 1-STD."x5'JUNCTION BOX / P=724.94 12"WATER FL30"=705 0.80(N) \ (PUBLIC) I 1 FL 30"=705.80(W) \ \ ' I I I I PRIVATE D ACCESS EASEMENT ETENTION AND 8"SANITARY(PUBLIC)' q r PROP.30"STM-3(PRIVATE) OVERFLOW EASEMENT \ 30'PUBLIC XISTING TXDOT OPEN CHANEL PROPOSED u,I I 6.854%GRADE I o EXISTING HEADWALL (DOC.NO.XXXXX) (DOC.NO.XXXX%) DETENTION I I z 25'PUBLIC I POND 8'WIDE BASE F.L.LIP=711.7 2'-2:1 SIDE SLOPE VI I \IA ACCESS EASEMENT 45'WATERAND > \ (DOC.NO.XXXXXJ SEWER EASEMENT �. FLOWSTO 7'X6'CULVERT a (DOC.NO.XXXXX) UNDER I-35W 1n .•'• `\ I EXISTING 30"RCP o EXISTING HEADWALL TXDOT TYPE CH-11-B \m' - STA 5+58.71 LINE INSTAL: F.L.(48")(IN)=705.00 —I H INSTALL: PROP CONCRETE, 1-MOD.S'x5'DROP INLET a RIP-RAP REF.SHEET 29 FOR DETAIL CONNECT TO BACK OF EXISTING TXDOT _ FG=716.16 TYPE SI-5 FL 30"=710.92(NW) 20'X4'CURB INLET I DEMOLISH EXISTING CONCRETE APRON PROP.48"STM-2 FL24"=710.91(E) TOP=71.-82 CONNECT PROPOSED 30"STM TO EXISTING CURB INLET \ D=7.50' AND CONSTRUCT CONCRETE APRON STA 5+68.67 UNE"STM-3" F.L.(24")(IN)=707.32 PER TXDOT STANDARDS INSTALL: 0 50 100 200 F.L.(30')(IN)=705.40 1-TXDOT SETP-FW-0 24'4:1 F.L.(48')(OUT)=705.02 ,./� / FL24"=711.02(W) PRIVATE STORM SCALE: 1"=100' "STM-3" VERTICAL SCALE: 1"=10' 735 €€ x S I 735 730 �`3: ztt 9-_ 730 ns - - -- - I— - - 725 9 emu --- - -- -- - - -- --- - — 1+�>'��z• -= 7zo 720 urlr•swa- - - - 715 -- -- — - - - 715 - --E%C11M --- —�. 1,V_3U•SiONA -- - 710 --_ ATYIM>�'Ahl -- - 1x1er 710 �W'-3a'STO"� - - I1Y'•i�it°PM.I-- - _.OGII'K Al. —i -�To• bxu I ' AT-Sm%IrwvATell �=nc�. Po -_ AT.. nAr 6 ruur w 705 705 = 'r1W3 8 a ` e r - 700 7-0+75 0+00 1+00 2+00 3+00 4+00 5+00 6+00 6+25 ©2019 MANHARD CONSULTING, LTD. ALL RIGHTS RESERVED _ EXHIBIT B (6 OF 16) i4anhard SOUTHGATE MARKETPLACE PHASE I (SWM-2019-0253) C 0 N S U L T I N C STORM PLAN & PROFILE STM-3 12225 Greenville Avenue,Suite 1000,Dallas,TX 75243 ph:972.972.4250 manhard.com DRAWN BY: DATE: SCALE: CPN: Civil Engineers I Surveyors I Water Resource Engineers I Water&Waste Water Engineers Construction Managers I Environmental Scientists I Landscape Architects I Planners ELC 10-03-2019 1" = 100' 102205 Texas Board of Professional Engineers Registration No. F-18141 EXHIBIT B LOT 8 BLOCK PROP 30"STORM u WATER(PUBLIC) (FP-19-068) RIVATE) . (PN19 %P4) 15'PRIVATESTORM 8"SANITARY(PUBLIC) DRAIN EASEMENT ' 45'SANITARY SEWER' (DOC.NO.XXXXX) AND WATER EASEMENT (DOC.NO.XXXXX) 72S— ' sz tt tt 725� n PROP.30"STM-3(PRIVATE) 30 PUBLIC 'Y ACCESS EASEMENT 720 (DOC.NO.)OM) -- —715 - STA 1+07.06 LINE"STM-4" INSTALL: 1-3'X3'WYE INLET TOP=725.50 THROAT=724.50 PROPOSED FL 36'=713.05(SE) (''�{T�- DETENTION POND PROP.36"STM-4(PRIVATE) PRIVATE DETENTION AND �7-- —715 � OVERFLOW EASEMENT / (DOC.NO.XXXX) STAO+19A2 LINE"STM-4" —_720 INSTALL: 0 50 100 200 F 36"0711.46(Wj36'4:1 — 725 PROP.CONCRETE RIPRAP 730 @ OUTFALL STM-4 REFER TO RIPRAP CALCS ON THE SCALE. 1 100' 735 EROISION CONTROL DETAILS - / ) 94- VERTICAL SCALE: 1"=10' Ir/ / tL =19.4' PRIVATE STORM "STM-41" 735 �, ' 735 730 730 725 725 aa„— 720 720 715 715 !..ax vvNn�rY 710 �.v 710 705 705 -0+25 0+00 1+00 1+30 0 2019 MANHARD CONSULTING, LTD. ALL RIGHTS RESERVED _ H EXHIBIT B (7 OF 16) an a r SOUTHGATE MARKETPLACE PHASE I (SWM 2019 0253) C O N S f ' C 7 C � � i STORM PLAN & PROFILE STM-4 12225 Greenville Avenue,Suite 1000.Dallas,TX 75243 ph:972.972.4250 manhard.com DRAWN BY: DATE: SCALE: CPN: Civil Engineers I Surveyor I Water Resource Engineers I Water&Waste Water Engineers s Construction Managers I Environmental Scientists I Landscape Architects I Planners ELC 10-03-2019 1" = 100' 102205 Texas Board of Professional Engineers Registration No. F-18141 EXHIBIT B OUTFALL A.1 — LEGEND UNDERGROUND STORM SEWER rJ AREA OF DISTURBANCE=7.05 AC INLET PROTECTION EX.30"STM (PUBLIC) EX.48"STM (PUBLIC) CONCRE E\VA HDU PROP. INLET SILT FENCE PROP. INLET PROTECTION - PROTECTION CONSTRUCTION ENTRANCE PROPOSED MINOR CONTOURS PROP. \\ 680 DMAJOR CHECK DAM 725 _� �\ CONTOURS CONCRETE RIPRAP PROP. IN LET PROTECTION / PROP.30"STM - SSURFA\CCE FLOW (PRIVATE) AR O /7/ / - `/ CHECK DAM � '' • • LIMITS OF DISTURBANCE / PROP.30"STM PROP.42"STM (PRIVATE) / ROCK BERM (PRIVATE) � S, PROP.24"STM PROP.30"STM NOTE: \ ELETS,ICHANNES.MEASURES MAYO,O BE PLACEDRROW INCHES AT _ INLETS,IN CONTRACTOR. IS,DRAItIAGEl4AV5,OR BORROY!DRCHES AT RISK (PRIVATE) (PRIVATE) _ °"FNTRA IDfl. _ ---- -- --- _ - COST RACTORSHALLREIAAIN LIABLE FOR ANY DAMAGE CAUSED BY THE MEAS FES, DING FLOODING MAY OCCUR _-. ---- - - _ - - \ ---_ _--- - PROP. INLET TOBLOCKEDtDRAINAGE.AT THE CONCL^US`ION OFAE, I ANY PROJECT,ALLUE C"ANNEALL BE REDGEDOFAEREViAYS,AND SEDIMENT DITCHGENERS IN ATED BY WORK PROTECTION ZONE SHALL BE DREDGED OF ANY SEDIMENTGENERATED BY THE � _ PROJECTOR DEPOSITED ASARESULT OF EROSION CONTROL MEASURES. I.SOILEROSION AND SEDIMENT CONTROLSHALL BEPROVIDEDIN ACCORDANCE WIT CRY INSTALLATION, FORT ON,ROUTINE EROSION REGULATIONS. 2.RE PONSIBINITY FOR PROP. INLET MAINTENANCE OF EROSION CONTROL SHOULD EBEIDEFINED ANDD _ ASSIG NED TO APPROPRIATE PERSONISI PRIOR TO COMMENCEMENT OF PROTECTION -I • - \ - ANYSOION CO TROLMEASURE Y. B.EROSION CONTROL MEASURES A1UST BE CONSTRUCTED \ FUNCTIONAL BEFORE ANY GRADING OR LAND DISTURBANCEE TAKES PROP.48 II STM _ PLACE. SOIL T TEMPORARY D PERMANENT FINAL GABILEISREACHED N APPLIED TO ALL DENUDED AREAS WHEN FINAL GRADE IS REACHED ON ANY (PRIVATE) PORTION OF SITE.TEMPORARY SOIL STABILIZATION MUST BE APPLIED TO DISTURBED AREAS MET URSBEI FORE DAYS. S.IN THE VE BY CITY THAT MEASURES BEING USED ARE DEEMED TO BE / ---I 1- BIT ECTNINAL PLAN INMAYB REQURED NALBY THE PA CITY OES FORT WORM. . - PROP. INTHEOOSIO CONTROL MAY BEREQUIRED BINSPCTED BY THE FDREM NDAIL CONY ST DEVICES OR LL BECONTROL OL INSPECTED WHICH SITE IS J FOREMAN DAILY,ANY STRUCTURE OR CNTROL DEVICE WHICH IS r/ CHECK DAM RAMAGEDORI NOPERATNEWILBEREPAIREDORREPLACED IMMEDIATELY. 7.SAIJ RARYFACIUTIESSHALLBE PROVIDED ONTHESRE&REGULARLY SERVICED AS RECOMMENDED BY THE SUPPLIER.TRASH&DEBRIS SHALL \ BE STORED IN COVERED BINS OR ENCLOSURES. / &CONSTRUCTION ENTRANCES/EXITSSHOULDBELItAREDAPJD PRIVATE DETENTION AND,- ,�zj� ST ETS. NPROVIDED TO PREVENTTRACKING OF SOILS ONTO CITY SIR OVERFLOW EASEMENT / z.ReMDvE SILT ANDICA SEDIMENTS CURBOM INLETS,S ORM FL REMO HANDICAP ACCESS RAMPS,CURB INLETS,CURBS, GUTTERS.TRANS,DRAIN AND - - ANY OTHER PUBLICDNUNAGE FACILITIES DAILY OR AS ACCUMULATION (DOC. NO.XXXXX) �35 °""S.10.EROSION CONTROL SHOULD BEBY-E EVALUATED TO DETERMINE THE __ , • EFFECFNENESSOF THOSEDEVICES S,AtJD HMGBNMDEI TO NECESSRYOSIFICONTROLDEVICES,APJDCHANGES MADEIF NECESSARY. • -- 11.501L TRACKED ONTO PUBLIC ROADS SHALL BE REMOVED DAILY IF I-- PROP.CULVERT / _ FEASIBLE,OR WHEN VISIBLY ACCUMULATDSDIMENT HAS BEEN \ PROTECTION - DEPOSITED.DISCHARGED SEDIMENT SHALL BE REMOVED AS SOON AS PROP. POSSIBLE. / 12.USING\VASH WATER TO VZASH SEOIIAEIIT FROh1 STREETS IS CHECK DAM RCHIBRD. 0 60 120 240 SCALE: 1"=120' 02019 MANHARD CONSULTING, LTD. ALL RIGHTS RESERVED 7rk4anhard EXHIBIT B (8 OF 16) SOUTHGATE MARKETPLACE PHASE I (SWM-2019-0253) I EROSION CONTROL PLAN 12225 Greenville Avenue,Suite 1000,Dallas,TX 75243 ph:972.972.4250 manhard.com DRAWN BY: DATE: SCALE: CPN: Civil Engineers I Surveyors I Water Resource Engineers I Water&Waste Water Engineers Construction Managers I Environmental Scientists I Landscape Architects I Planners ELC 10-03-2019 1" = 1201 102205 Texas Board of Professional Engineers Registration No. F-18141 EXHIBIT B coxcRETE eLocKs Fn.xTn. STONE FILTER WIRESCREEN STONE 50'MIN. 000 0 0 0 0 0 000000 ° r 15' r unET E.RO.w. �O°O°00000°O°GOO 'o°o°a°o°o°0 .0°00 0000°00 000 00000 0 000 , PM1]E]!T 0000 00000000000°0°0°0°0°0°0° °o10.1 0 SECTION SECTION A-A o 0 0 0 .0 0 0 0 0 0 g o 0 0°0 0 y�_yr ROCK u NOTOG ITEII BO3.3 „ , o°o°o°o°o°o°o°o°0 oC' 'TIFF A RPfiAP' 0 o0O PLAN VIEW ,.,n. TO p0 00 FILTERSTONE PAVED SURFACE o O o 0 A , O O A O O 50"MIN. °O INLET °0 GRACE fR 11 PFWvLEAVING RUNOFF ppSlNp 7°O °O ,.op0000000p0p0oo 0pp00o000p0o00g0p 0o0 PAVEIEHNT °o ° CONBLOCRETE O Og00Op OO OpO a0 N0 000 00° qO p00 !00 O BLOCKS a 0 0 0 0 oa o° 00 ° ,Op op FLIER FABRIC C' O 1/2"KFf2- LR 31,MIN. p0 _ 0 00000 WIRESCREEH DGSTINO GROUND ATC ° ° 0- Q-C) 0- 00 ) O 0020 ,-1, C) O GRADE TO DRAIN AWAY FROM PROFILE STABAIIIATION AM STREET PAVED PLAN VIEW SMACE. DRAINAGE MUST FLOW AWAY FROM ENTRANCE STABALIZED CONSTRUCTION ENTRANCE nIIY/DROP" INLET PROTECTION 1 NOT TO SCALE `� NOT TO SCALE NOTES 1. USE OILY OPEN GRADED ROCK 4-8 INCHES N DIAMETER FOR STREAFI FLOW CONDITION. USE OPEN GRADED ROCK 3-5 INCHES N DIAMETER FOR OTHER OOfORIONS. 2. ROCK KW SHALL BE SECl1RED WITH A WOVEN WIRE SHEATHING HAVING A MAX.OPENING OF 1 NCH AND A MEN.WIRE Sff OF 20 GAUGE AND SWl BE FAIRED N A TRENCH APPROX.3 TO 4 OPENGRADEROCK INCHES DEEP. 21 MIN.1 3. THE ROC(BERL SHALL BE INSPECTED Wl>:7G.Y WOVENWIRESNEATING I I OR AFTER EACH RAN EVENT AID SHALL BE AxaoRs@a' REPLACED WHEN THE STRUCTURE CEASES TO h� cExTERsuoxG FUNCTION AS INTENDED,DUE TO SILT Sf LEnGTxOrBERM ACCUIRLARON AMONG THE ROCH.S` WASH OUT OONSTRIXI10N TRAFFIC DAMAGE,ETC. 4. WHEN SILT REACHES A DEPTH EQUAL TO STEEL OR WOOD POSTAT V C.C.(MAX) - ANCHOREDSPLASH ONE-THRD THE HEIGHT OF THE EERY OR BuaY ROCICBERM 3T ES PADGE0.SYNTHETIC ONE FOOT,WMCFEVER IS LESS.THE SILT SHALL Posrornoxs: IrrrOGROUosouxD —'.":`.�� FILTER FABRIC BE BELOVED AND DISPOSED OR F'ROPELY. WOOD=a^xe"ORR"MDI.DM. 2sm) Q WHEN THE SITE IS C04PLEIELY STABIL12ED.THE srEEL=''sB Las"T'FAW' CROSS SECTION BERM AND ACCUMULATED SILT SHALL BE GEo-srHrxETx REpVED AND DISPOSED OF N IW APPROVED FILTER FABRIC S. ROC(BERM SIOUID BE USED AS CHECK DAMS FOR CONCENTRATED FIOW AHD ARE NOT WIRE FABRICGA.INTERME.NNE WIRES MIN. INTENDED FOR USE IN PEWETEL PR07ECTIDrN. F2 2/2 GA.INTERMEDIATE WIRES LAIN.) WOVEN W RE SHEITHING - MIRAFI lfpx ORAPPROVED EgOPl ANCHORED SPLASH PAD G HEM FILTER FABRIC FABRIC ANCHOR FABRICIN G _ _=_ TRENCH.BACKHLL&COCOMPACT OPEN GRADED - -_ HOCK FLOW - FILTERFABRIC ANCHORS@!' CENTERS ALONG LENGTH of BERM SILT FENCE 2 NOTTOSCALE ISOMETRIC PLAN VIEW ROCK BERM FOR CHECK DAM 4 NOT TO SCALE ©2019 MANHARD CONSULTING, LTD. ALL RIGHTS RESERVED _ EXHIBIT B (9 OF 16) anhard SOUTHGATE MARKETPLACE PHASE I (SWM 2019-0253) C O N S U � 7 r [tr __N EROSION CONTROL DETAILS 12225 GTe enville Avenue,Suite 1000,Dallas,TX 75243 ph:972.972.4250 manhard.com DRAWN BY: DATE: SCALE: CPN: Civil Engineers I Surveyors I Water Resource Engineers I Water&Waste Water Engineers Construction At. I Environmental Scientists I Landscape Architects I Planners ELC 10-03-2019 N.T.S. 102205 Texas Board of Professional Engineers Registration No. F-18141 EXHIBIT B DETENTION POND STAGE STORAGE-DISCHARGE CONTOUR INC VOLUME ELEVATION AREA TAL CUMULATIVE CUMULATIVE Q TOTAL Q6" Q9" QW s d d ao-ft 723.20 38,201 6,951 202,792 4.66 <=Freeboard Elevation. 723.00 31,305 29,842 195,842 4.50 722.0 28,378 26,984 166,000 3.81 10.02 3.20 4.49 2.33 <=300 yr WSEL(722.03) 721.67 27,457 17,770 156,787 3.60 7.49 3.16 4.33 0.00 721.0 25,589 24,263 139,017 3.19 6.99 3.06 3.93 0.00 720.0 22,937 21,680 114,754 2.63 6.14 2.89 3.25 0.00 719.0 20,423 19,234 93,074 2.14 5.10 2.72 2.38 0.00 718.0 18,045 16,925 73,840 1.70 3.34 2.54 0.80 0.00 717.0 15,805 14,754 56,915 1.31 2.34 2.34 0.00 0.00 716.0 13,702 12,720 42,161 0.97 2.12 2.12 0.00 0.00 715.0 11,737 10,823 29,442 0.68 1.88 1.88 0.00 0.00 714.0 9,908 9,063 18,619 0.43 1.60 1.60 0.00 0.00 713.0 8,218 7,216 9,556 0.22 1.27 1.27 0.00 0.00 712.0 6,213 2,331 2,341 0.05 0.79 0.79 0.00 0.00 11 MODIFIED 5'x5'DROP INLET WITH 4'x4'GRATE OVERFLOW It § a a a TOP=722.67' 3 � 9 a + THROAT=721.67' a ar} 4'FT WIDE X.T TALL 3 � a + • � 4 I sl A tl 9"-DIA ORIFICE=717.35' - a a I= + y\ MIN'1'CLEARANCE TO BOTTOM OF ORIFICE ICI s + ► a SOLID FACE CONCRETE WALL WITH ORIFICE CAST INTO 4 1 HEADWALL. EXTEND SAME SIZE PIPE TO MODIFIED Y-INLET STRUCTURE BOX ELEVATION=710.50" a a '+ i A FINISHED GRADE ( _ '� y Z��• ELEVATION=711.05' 9 6"-DIA ORIFICE FL=711.02' DETENTION POND OUTFALL (NOT TO SCALE) 02019 MANHARD CONSULTING, LTD. ALL RIGHTS RESERVED 7rHanh EXHIBIT B (10 OF 16) a,rd SOUTHGATE MARKETPLACE PHASE I (SWM-2019-0253) CONSULT ,'G DETENTION POND OUTFALL 12225 Greenville Avenue,Suite 1000,Dallas,TX 75243 ph:972.972.4250 man hard.COm DRAWN BY: DATE: SCALE: CPN: Civil Engineers I Surveyors I Water Resource Engineers I Water&Waste Water Engineers Texas Board of Pr Construction Managers I Environmental Scientists I Landscape Architects I Planners ELC 10-03-2019 N.T.S. 102205 ofessional Engineers Registration No. F-18141 EXHIBIT B Modified Rational Method Detention Pond Design I'Med DesWpCon: SoUhgala Pond Pmled No.: 0299 BY: CBJ Design Eae 1-Y Date: wa2ot9 CbedIdBY TNC step K C 1 Relnfall Intens .I=N c d•e 0 Un A 0 peak deWned O Peak @ Outfell e b tl To I Whr saes ds ds ds 1 Exist.Good 1.00 0.37 0.82169 43.65 8.00 14.96 3.32 2L98 27.D4 23.96 3.07 2 Prop.Cond. 1.00 0.62 1 0.82169 1 43.65 1 8.00 1 10.00 1 4.06 1 18.39 1 46.30 iSWM Modified Rational Method on Ca 0 37 � INhr da i 3 32 A 21.98 acres Td I— Vpre min 0. ds C A acres a b 47866 276 83 Vmex 60086.34104 113 tc 10 min P180 SAJ in '+ P1d 413 in To 9-1.31 min 6 0.77982 b 110.202 d 14.60 1 3.08 matt Vpre 1.10 aae41 Vmax 1 1.38 ao1s41 �CARDINAL. Yl STRATEGIES 02019 MANHARD CONSULTING, LTD. ALL RIGHTS RESERVED _ M EXHIBIT B (11 OF 16) an a r SOUTHGATE MARKETPLACE PHASE I(SWM-2019-0253) C O N S U L T I N C POND DESIGN: 1-YEAR EVENT 12225 Greenville Avenue,Suite 1000,Dallas,TX 75243 ph:972.972.4250 manhard.com DRAWN BY: DATE: SCALE: CPN: Civil Engineers I Surveyors I Water Resource Engineers I Water&Waste Water Engineers Construction Managers I Environmental Scientists I Landscape Architects I Planners ELC 10-03-2019 N.T.S. 102205 Texas Board of Professional Engineers Registration No. F-18141 EXHIBIT B Modified Rational Method Detention Pond Design Project Description: Setithgate PondA Project No.: 0299 BY ca.) DW9n Es SYR Date: &2812019 Checked By TNC Slap K C Rainfall inten' I=N cad A O peak 0llndetained O Peak®0u1fa11 e b d Tc I iaVhr ewes crs cfs cfs 1 Exist-Cand. 1.00 0.37 0.81423 71.15 12.00 14.96 1 4.87 1 21.98 1 39.58 33.88 1 5.70 2 Prop.Cond. 1 1.00 1 0.62 1 0.81423 1 71.15 1 12.00 1 10.00 1 5.74 1 18.39 1 65.48 iSWM Modified Rational Method A � ds Ca 0 37 1 4.87 wtv A 2198 acres Tal 9' 81 min Oa 5.70 cfs C 0.62 A 19.39 acres a _ 170.81 b 19.435 vpre 79052.470 ft3 varex 95192.98001 ft3 tc 10 P180 SA3 in Pid 4,51 in To 95.81 rain a 0.77982 b 110.202 d 14.00 1 xsx ka, Vpre 1.a3 am* v— z>_+ acre-n tCARDINAL STRATEGIES 02019 MANHARD CONSULTING, LTD. ALL RIGHTS RESERVED _ M EXHIBIT B (12 OF 16) an a r SOUTHGATE MARKETPLACE PHASE I (SWM-2019-0253) C O N S U L T I N C POND DESIGN: 5-YEAR EVENT 12225 Gre n enville Avenue,Suite 1000,Dallas,TX 75243 ph:972.972.4250 mahard.com DRAWN BY: DATE: SCALE: CPN: Civil Engineers I Surveyors I Water Resource Engineers I Water&Waste Water Engineers Construction Managers I Environmental Scientists I Landscape Architects I Planners ELC 10-03-2019 N.T.S. 102205 Texas Board of Professional Engineers Registration No. F-18141 EXHIBIT B Modified Rational Method Detention Pond Design Pmfttl Desalp0on: SOWgate Por4A "ed No.: 0299 BY ca3 0.0 Event 1DD-YR Da'4: S1H2O19 Checked By TNc Stop K C Rainfall Inten ,I=N d A 0 peak 0 Undeieined 0 Peak®ow." e b d Tc I avhr acres ch ds ds 1 Et Cond. 1.00 0.37 0.77982 110.20 14.00 14.96 7,98 21.98 64.94 54.54 10.39 2 P .Cond. 1.00 0.62 0.77982 110.20 14.00 10.00 1 9.24 1 18.39 1 105AO ISWM Modified Rational Method Q. _ cis Ca 0.37 1 7.98 Whr A 21.98 acres Td r3aO7 b min Qa cfs C A acres e b 8 Vpre 142950.045 h3 V.. 166305.3635 03 tc 10 min P180 5,43 in Ptd 4,67 in To 105.8E mia e 0.77992 b 110.202_ d 14.00 1 2.62 (Mr Vpre 3.23 acre-0 Vmax I 3_" aQa-B tCARDINAL STRATEGIES ©2019 MANHARD CONSULTING, LTD. ALL RIGHTS RESERVED _ EXHIBIT B (13 OF 16) Hanhard SOUTHGATE MARKETPLACE PHASE I (SWM-2019-0253) CONSULTING POND DESIGN: 100-YEAR EVENT 12225 Greenville Avenue,Suite 1000.Dallas,TX 75243 ph:972.972.4250 manhard.com DRAWN BY: DATE: SCALE: CPN: Civil Engineers I Surveyors I Water Resource Engineers I Water&Waste Water Engineers Construction Managers I Environmental Scientists I Landscape Architects I Planners ELC 10-03-2019 N.T.S. 102205 Texas Board of Professional Engineers Registration No. F-18141 EXHIBIT B -r c ec cca� �•s-sc� ;;8 I �I ' I ztc�c8vii$� ' A Ge°e@ I Iag I . NN I g y I" Evil I a i i m avObe3isnv�w it i - s 0, -i 'I � i Ili I s ei I I ;`=_pad 5 I I II o I;Ii,'I! Ili i/li ,l I I 11 z , § 2111 m - A iq�' rn P i IIIi I sae C -�o �y OiD"3A pZDmtD t 1111' I _ -� -I1 -�I Zy2NOD2 I II III I h Eg3Eg I _ HIM ' �g moo �N'0000 :; ��a �G1I m�N19 zoK ^o=ti�mm / I I/i/: �� Hum 5 ➢� mLzl �� X K �= i i III I EK gnuzz _ I ' e2� •Ih II I. Ili I _ ��r••. :;;' � :a••••• 5 a n EI Ili I j`�• O D IN I 00 it I 11 I I .'co :: •Tg�it �y � III t� : G- • © ©© P I EF Op (L81T z '0)1 A31M0H7 NOUN311 3 g D Gy ALz1 z°i C� Z T s o �° ._ oz s 3 o o y• aay w,I I IFTSOUTHGATE MARKETPLACE-PHASE 1(PAD SITE DEVELOPMENT I.35&F.M.1187 Ma ard PHASE I-URBAN FORESTRY PLAN ''i"',''Ep" :i�:" �'i. PA74 WO EXHIBIT B isam s� �.vmH�iri �1vls�aiNi d dyp21371/2138'BNI 'I _�O, r�C),6 „W 111:11H111; ' j7 gib. 4 a t �o - ___ Cz q z-:0---------- , l. _ j - - - --- —1 �RF� kY��>•�i �� I i i I ---- fmi �e.. I,�s S• r i i t 1 mi f it i 1 I ml sFe Yet �kSA i i j - �1 . -- -- --------- -- ---- • - i-- i r I r - -- ; as� • i � did I I tu L I I fi L I 9gu s 0 3 Q F by a Sheet 7lt4, � • peNefGxs, LH.U, a Phase 2 p Southgate Market Place - � £� � Phase 1 - Pad Site Development o e � s Urban Forest '?h p g Ft.Worth Texas Grubbs Design Group,P.L.L.C..403 South Tennessee Street-McKinney,Texas 75069-Phone(972)548-5020 EXHIBIT B i —--------- is3m eE Ldmr+DIH aivl5�� N aye 37/ii39'HN(Gf'1 A 1-------- --- r ------ Ce: im I� s i A Im 'IF j F I IM Q I 0 1 I� g I ° ! Im y g ! Im i I I I I`, ii I I I I s • t 1 I I OMNI g NI {4 .� All j jq :N,E � `s O 4 Fe a cZ 91 IN 5tg ii S4fi —_ Phase 2 �:"' Southgate Market Place $8 = NN- � `` Phase 1 - Pad Site Development s Urban Forestry ~ ~�� Ft.Worth Texas - Grubbs Design Group, P.L.L.C.-403 South Tennessee Street-McKinney,Texas 75069-Phone(972)548-5020 Exhibit "C" CITY OF FORT WORTH STORMWATER FACILITY OPERATION AND MAINTENANCE PLAN The only responsibility the City of Fort Worth has in the operation and maintenance of this Facility is inspection. General Maintenance Procedures The structural and functional integrity of the Facility shall be maintained at all times by removing and preventing drainage interference, obstructions, blockages, or other adverse effects into, through, or out of the system. Periodic silt removal shall occur when standing water conditions occur or the pond's storage volume is reduced by more than 10%. Silt shall be removed and the pond/basin returned to original lines and grades shown on the approved engineering plans. In addition, corrective measures are required any time a basin does not drain completely within 72 hours of cessation of inflow. NO STANDING WATER IS ALLOWED in basins designed for dry detention purposes. Accumulated litter, sediment, and debris shall be removed every 6 months or as necessary to maintain proper operation of the basin. Disposal shall be in accordance with federal, state and local regulations. Detention facilities shall be mowed monthly between the months of April and October or anytime vegetation exceeds 12-inches in height. To prevent debris from entering and clogging the downstream storm sewer system a wire mesh screen or similar screening device shall be installed over the outlet until final acceptance. 4. PREVENTIVE 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 26 Rev.11/17/2016 Exhibit "D" Stormwater Structural Maintenance CHECKLIST FREQUENT REPAIRS REPAIRS INSPECTION DATE REQUIRED MADE NOTES Mowing Remove Trash and debris Inspect irrigation system operation Remove grass clippings Violations Noted MINOR INSPECTION Condition of Pond Amount of silt in and Amount of silt in flume Amount of ponded 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 STORMWATER FACILITY MAINTENANCE AGREEMENT 27 Rev.11/17/2016 Condition of filtrations stem Berm or Embankment Settlement Location of erosion Evidence of Animals Evidence of Aquatic life Condition of Aeration Foundation STORMWATER FACILITY MAINTENANCE AGREEMENT 28 Rev.11/17/2016