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HomeMy WebLinkAboutContract 61314Date Received: 04/24/24 Time Rece• ived: 1:45 p.m. Permit No.: SWFMA-24-0016 City Secretary No.: 61314 STORMWATER FACILITY MAINTENANCE AGREEMENT THIS AGREEMENT, made and entered into this 24th day of Apri 1 20 24 , by and between Cavile Public Facility Corporation, 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 George J. Ashabranner Survey, Abstract No. 7, Tarrant County, Texas according to the deed recorded in Document No. D221131212, 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 Babers Manor 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 STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 03/01/2022 BN 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 on -site Stormwater Management Facility ("Facility") at no expense to the City of Fort Worth in accordance with the design specifications for the Facility, attached as Exhibit "B", and the current standards then in force and effect in the City of Fort Worth and with the Operations and Maintenance Plan attached to this Agreement as Exhibit "C". The Stormwater Facility includes all pipes, channels or other conveyances built to convey Stormwater to the facility, as well as all structures, improvements, and vegetation provided to control the quantity and quality of the Stormwater. Adequate maintenance is herein defined as good working condition so that these facilities are performing their design functions. The Stormwater Structural Control Maintenance Checklists, attached to this Agreement as Exhibit "D", are to be used to establish what good working condition is acceptable to the City. 2. The Landowner, its successors and assigns, shall inspect the Facility and submit an inspection report to the City annually. The purpose of the inspection is to assure safe and proper functioning of the Facility. The inspection shall cover the entire Facility, berms, outlet structure, pond areas, access roads, etc. Components of the Facility, which need maintenance or replacement to perform their design function, shall be noted in the inspection report along with the corrective actions to be taken. 3. The Landowner, its successors and assigns, hereby grant permission to the City, its authorized agents and employees, to enter upon the Property and to inspect the Facility Property whenever the City deems necessary. The purpose of inspection is to follow-up on reported deficiencies and/or to respond to STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 03/01/2022 BN 2 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. TO THE EXTENT PERMITTED BY APPLICABLE LAW, THE LANDOWNER AGREES TO HOLD THE CITY HARMLESS FROM ANY LIABILITY IN THE EVENT THE FACILITY FAILS TO OPERATE PROPERLY. TO THE EXTENT PERMITTED BY APPLICABLE LAW, LANDOWNER COVENANTS AND AGREES STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 03/01/2022 BN 3 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 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 Rev. 03/01/2022 BN 4 Executed this 24th day of April CITY OF FORT WORTH -� apta f - Dana Burghdoff (Apr S, 2024 39 CDT) Dana Burghdoff Assistant City Manager City of Fort Worth Date: Apr 23, 2024 Approved as to Form and Legality: .t CAew ( biro Matthew Murray Senior Assistant City Attorney City Attorney's Office Date: • Apr 23, 2024 Jannette S. Goodall City Secretary Date: Apr 23, 2024 STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 03/01/2022 BN 20 24 LANDOWNER Cavile Public Facility Corporation a Texas nonprofit corporation Mary -Margaret emons Secretary/Trxas er Date: AtQY1 k 1 b Q4O tk 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. Rout ec a O ve (Ap 2 , 292^ Dg23 CDT Rebecca Owen Planning Manager Date: Apr 23, 2024 OFFICIAL RECORD CITY SECRETARY FT. WORTH, TX STATE OF TEXAS COUNTY OF TARRANT This instrument was acknowledged before me on April 23rd, 2024 by Dana Burghdoff, Assistant City Manager of the City of Fort Worth, on behalf of the City of Fort Worth. BROOKE BONNELL w Notary Public STATE OF TEXAS Notary I.D. 134009525 My Comm. Exp. Oct. 11, 2026 LANDOWNER Notary Public, State of Texas STATE OF ( E)1 A 5 § COUNTY OF 1 A BEFORE ME, the undersigned authority, a Notary Public in and for the State of I E-J(f 5 , on this day personally appeared 1/1,�.R�! - ,prAC,k1Z>_T L Ot4S (name), SP r.cfe A-c,ry I Treasurer (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 Co,../At F c 11 �u��0 J iu{1 (entity), a public %ccAA.-v r?ucFord-run (entity type) and in the capacity therein stated. GIVEN UNDER MY HAND AND SEAL OF 0 . ' is I 8 day of Ytpc i , 20 aA . Notary Pub EVA C KEY Notary ID #10943269 i / My Commission Expires 'rFa} August 15, 2025 STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 03/01/2022 BN 6 EXHIBIT "A" Legal Description STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 11/17/2016 7 LEGAL DESCRIPTION BEING a 0.3932 acre (17,128 square foot) tract of land situated in the George J. Ashabranner Survey, Abstract No. 7, City of Fort Worth, Tarrant County, Texas, and being a portion of Block 33, Eastwood Addition, Third Filing, an addition to the City of Fort Worth according to the plat recorded in Volume 388-Z, Page 52, Plat Records, Tarrant County, Texas, and being a portion of Tracts 1-4 described in Special Warranty Deed to Cavile Public Facility Corporation recorded in Instrument No. D221131212, Official Public Records, Tarrant County, Texas, and being more particularly described as follows: COMMENCING at a chain link fence corner found at the northwest corner of Lot 1, Block 32, said Eastwood Addition, Third Filing, and being at the southwest corner of said Block 33, and being in the east right-of-way line of South Hughes Avenue, a 50 foot right-of-way, from which a 5/8-inch iron rod with "KHA" cap set at the southeast corner of said Block 33, bears North 89°45'46" East, a distance of 489.01 feet; THENCE North 0°14'14" West, along the said east right-of-way line, a distance of 129.85 feet to the POINT OF BEGINNING; THENCE North 00°14'14" West, continuing along the said east right-of-way line, a distance of 36.30 feet to a point for corner, from which a mag nail with washer stamped "KHA" set at the northwest corner of said Tract 4, and being at the intersection of the said east right-of-way line, and the south right-of-way line of Ramey Avenue, a variable width right-of-way bears North 00°14'14" West, a distance of 233.49 feet; THENCE North 89°45'58" East, departing the said east right-of-way line, a distance of 22.23 feet to a point for corner; THENCE North 90°00'00" East, a distance of 345.16 feet to a point for corner; THENCE North 00°00'06" West, a distance of 101.37 feet to a point for corner; THENCE North 45°00'00" East, a distance of 33.54 feet to a point for corner; THENCE North 90°00'00" East, a distance of 39.51 feet to a point for corner; THENCE North 45°00'00" East, a distance of 49.08 feet to a point for corner; THENCE North 00°31'21" West, a distance of 34.07 feet to a point for corner; THENCE North 45°19'15" East, a distance of 16.03 feet to a point for corner, from which a mag nail with washer stamped "KHA" set at the northeast corner of said Tract 1, and being at the intersection of the said south right-of-way line, and the west right-of-way line of South Edgewood Avenue, a 60-foot right-of-way, bears North 18°14'16" East, a distance of 30.87 feet; CONTINUED ON SHEET 2 STORM WATER FACILITY MAINTENANCE AGREEMENT GEORGE J. ASHABRANNER SURVEY ABSTRACT NO. 7 CITY OF FORT WORTH TARRANT COUNTY, TEXAS KimIey»Horn 801 Cherry Street, Unit 11,#130Tel. No. (817) 335-6511 Fort Worth, Texas 76102 FIRM # 10194040 www.kimley-hom.com Scal Date Pro ect No. heet N/A e I Drawn CRGbV Ch JDW by I 1/29/2024 061310306 I Sheet OF4° GENSHEIMER, RILEY 3/4/2024 8:14 AM K:\FTW SURVEY\061310306-MBS RAMEY AVE\DWG\061310306-MBS RAMEY AVE_DE.DWG LEGAL DESCRIPTION (CONTINUED) THENCE South 00°00'00" East, a distance of 7.75 feet to a point for corner; THENCE North 90°00'00" East, a distance of 6.38 feet to a point for corner THENCE South 45°19'15" West, a distance of 10.88 feet to a point for corner; THENCE South 00°31'21" East, a distance of 34.04 feet to a point for corner; THENCE South 45°00'00" West, a distance of 57.42 feet to a point for corner; THENCE North 90°00'00" West, a distance of 39.51 feet to a point for corner; THENCE South 45°00'00" West, a distance of 25.25 feet to a point for corner; THENCE South 00°00'06" East, a distance of 97.23 feet to a point for corner; THENCE North 90°00'00" East, a distance of 20.10 feet to a point for corner; THENCE South 00°00'00" East, a distance of 36.39 feet to a point for corner; THENCE North 90°00'00" West, a distance of 397.34 feet to the POINT OF BEGINNING and containing 17,128 square feet or 0.3932 acres of land, more or less. NOTES Bearing system based on the Texas Coordinate System of 1983 (2011 adjustment), North Central Zone (4202). A survey plat of even survey date herewith accompanies this metes and bounds description. The undersigned, Registered Professional Land Surveyor, hereby certifies that the foregoing description accurately sets out the metes and bounds of the agreement tract. JOSHUA D. WARGO REGISTERED PROFESSIONAL LAND SURVEYOR NO. 6391 801 CHERRY STREET, UNIT 11 SUITE 1300 FORT WORTH, TEXAS 76102 PH. 817-335-6511 josh.wargo@kimley-horn.com STORM WATER FACILITY MAINTENANCE AGREEMENT GEORGE J. ASHABRANNER SURVEY ABSTRACT NO. 7 CITY OF FORT WORTH TARRANT COUNTY, TEXAS KimIey»Horn 801 Cherry Street, Unit 11,#130Tel. No. (817) 335-6511 Fort Worth, Texas 76102 FIRM # 10194040 www.kimley-hom.com Scal Date Pro ect No. N/A e I Drawn CRGbV Ch JDW by I 1/29/2024 061310306 I Sheet 2OF 4°. GENSHEIMER, RILEY 3/4/2024 8:14 AM K:\FTW SURVEY\061310306-MBS RAMEY AVE\DWG\061310306-MBS RAMEY AVE_DE.DWG GENSHEIMER, RILEY 3/4/2024 8 14 AM K \FTW SURVEY\061310306-MBS RAMEY AVE\DWG\061310306-MBS RAMEY AVE_DE.DWG NO°14'14"W 129.85' 0 H r O H N 00 0D Z Z 7 m m z 0 m m D co 0 co 0 02 w 73 O r rn N p O0 m — (0 ▪ • 71 r N Gcn O ) = N 0 Z O IIicn n T W o� � D • n D oo m0� O 0> Z 5i 50 0• m�� G) m 0 G > • cn m z TO 5--I T �D< `Z CO • m Z Y J 11 Z m n • mF m <z m SOUTH HUGHES AVE. (A 50-FOOT RIGHT-OF-WAY) L1 NO°14'14"W 233.49' o V W W 00 IV A0 m cn L20 ✓ 11 — > 0 71 0 z < < 2nO m N D O 03 - > O N_O Z L4 Z SOUTH EDGEWOOD AVE. (A 60-FOOT RIGHT-OF-WAY) z cn 0 0 • u u Do513-0 0_00 >00—I-1 FZ00 COArTi m m -1 00 m co 0 0 =Z Z Z > 0 O • 0 cn D D W ✓ m 5 7' 0 m r m 0 m z 0 .3AV Jl2 Wb2:1 LINE TABLE NO. BEARING LENGTH Ll N00°14'14"W 36.30' L2 N89°45'58"E 22.23' L3 N90°00'00"E 345.16' L4 NOO°00'06"W 101.37' L5 N45°00'00"E 33.54' L6 N90°00'00"E 39.51' L7 N45°00'00"E 49.08' L8 NOO°31'21"W 34.07' L9 N45°19'15"E 16.03' L10 N18°14'16"E 30.87' L11 S00°00'00"E 7.75' L12 N90°00'00"E 6.38' L13 S45°19'15"W 10.88' L14 SOO°31'21"E 34.04' L15 S45°00'00"W 57.42' L16 N90°00'00"W 39.51' L17 S45°00'00"W 25.25' L18 SOO°00'06"E 97.23' L19 N90°00'00"E 20.10' L20 S00°00'00"E 36.39' L21 N90°00'00"W 397.34' NOTES Bearing system based on the Texas Coordinate System of 1983 (2011 adjustment), North Central Zone (4202). A metes and bounds description of even survey date herewith accompanies this survey plat. The undersigned, Registered Professional Land Surveyor, hereby certifies that this survey plat accurately sets out the metes and bounds of the agreement tract. AJOSZ- HUA D. WARGO REGISTERED PROFESSIONAL LAND SURVEYOR NO. 6391 801 CHERRY STREET, UNIT 11 SUITE 1300 FORT WORTH, TEXAS 76102 PH. 817-335-6511 josh.wargo@kimley-horn.com STORM WATER FACILITY MAINTENANCE AGREEMENT GEORGE J. ASHABRANNER SURVEY ABSTRACT NO. 7 CITY OF FORT WORTH TARRANT COUNTY, TEXAS KimIey»Horn 801 Cherry Street, Unit 11,#130Tel. No. (817) 335-6511 Fort Worth, Texas 76102 FIRM # 10194040 www.kimley-hom.com N/A Date Pro ect No. e I Drawn CRGbV Checked JDW by I 1/29/2024 061310306 I Sheet 4OF4o. GENSHEIMER, RILEY 3/4/2024 8:14 AM K:\FTW SURVEY\061310306-MBS RAMEY AVE\DWG\061310306-MBS RAMEY AVE_DE.DWG EXHIBIT "B" Design Plan and Specifications STORMWATER FACILITY MAINTENANCE AGREEMENT Rev. 11/17/2016 8 IOC 44¥up=UU o?«a P. - WATER LINE SITE DATA SUMMARY CHART RES (194,796 SO FT) > ! h ! q § -4§-§ ]-- s w svyka!%1,11 oaf o /MAWR I'k■' ■' ■ HONIVIAI " (; CONSTRUCTION SCHEDULE ®®®®®®® \m-2 !: �! ATIW ! � ! u 7 £69SI-d#wwusi8ay "+'!d - 96Gt-L69-LTB auoyd BuuaauBu3 ollwe� ZOT9L essay 4µiotA nod - OWE I O£ �ZZ `01TuaauTug OTIWEJ IUV'IJ 9NIQVH SOI9L SVX3.I. `HUIOM ,LHIO3 3AV A3AIVH DZI'D `9IDti'80117'OODD ]IOAIVIQ SH3HVH �eF (AVM—d0-1H611 oIl9 fldS) '3AV S3 JOf1H HLROS' k*1 "'""I 4N8w 69 ``6''0 9l X4 £69SY-d# wueusi8ay "+'!d - 96Gt-L69-LI8 auoyd 6uu0aU0u3 011weD ZOY9L essay 4µioq\ nod - Olti I O£ �ZZ `OuuaauTug OTIWEJ JVLN 9NLLSIX3 SOI9L `HMOM ,LZIO I 3AV AMNVK IZtt `9ltt `801,17 `OOtt HOMVI4I SII3HV I 0 y U L z at � I 0 / t' \ `s,s> ,!! 3 3183 4s :jw�€ aagEr9i =§gW & 9�89 8rS 9 Drainage Area Calculations -din accordance with City of Fort North Design Drainage Manual) Existing Conditions IS.F `o 8989989 `o `a `o g 8 fa Go{fl9 5-51 M >g_ '..00000 !AA 6.1' m 18(88888888 9 S' seeeeeee e _,. 0000e?e 2 d"a.H1.11 ic4 `_ 0 0 0 0 e 0 0 0 e 8 a 3 3" - .5 1 �O H 1 3 o a s- 3 - e _ _ d a 3 \ I tit —9f9 — — '22�Sa 44 / I I i 1 I / I / / Il I / 1 I I I it I I 1 1 rj /rl I 1 \� l £69SI-d#"o9"ne'$aN""!d - 96Gt-L69-LTB auoyd BuuaauBu3011lueD ZOT9L oxU,Poq£nod- OItI TO£ SOI9L SVXH.L `HUIOM ,LHO I HAV AMNVH IZtt `9ltt `801,17 `OOtt ]IOAIVIN SIHHVH £69SI-d# ns'$'N uu!d - 96Gt-L69-LIB auoyd 644.03 opwe3 ZOI9L nod- OWE 2S ha04S IO£ �ZZ `01TuaauTug oncueg A SNOLLVIf1IIVI.VIII Vi IV I9VNIVII0 SOI9L SVXML `HUIOM LZIO3 3AV Ah1IVH IZ1,t'9111,4801'I' `dolt IIOAIVI I SIIiaiva « e v � Proposed wghd Runoff C Previous Runoff Coefficient Weighted Runoff Ccetticien Proposed Weighted Run& Proposed Weighted Punt! Coefficient Calculations UA Proposed Weighted Runoff Coe! i Imprevious Runoff Lae s efficient Calculations 0.9 OS& 722 2 8 a Proposed Weighted Runo a 5 2. Proposed Weighted Run, Drainage Area Calculations -(in accordance with City of Fort Worth Design Drainage Manual) PROPOSED Conditions Description Drains to proposed grate inlet then to underground detention pond Drains to proposed curb inlet then to underground detention pond Drains to proposed grate inlet then to underground detention pond Drains to proposed curb inlet then to underground detention pond Drains to proposed curb inlet then to underground detention pond Drains to proposed curb inlet then to underground detention pond Drains to proposed grate inlet then to underground detention pond Drains to proposed grate inlet then to underground detention pond Drains to proposed curb inlet then to underground detention pond Drains to proposed curb inlet then to underground detention pond Drains to proposed curb inlet then to underground detention pond Drains to proposed curb inlet then to underground detention pond Drains to proposed curb inlet then to underground detention pond Drains to proposed curb inlet then to underground detention pond Drains to proposed curb inlet then to underground detention pond Drains to proposed curb inlet then to underground detention pond Drains to proposed grate inlet then to underground detention pond Drains to proposed grate inlet then to underground detention pond Drains to proposed grate inlet then to underground detention pond Roof drains to proposed drain system then to underground detention pond Roof drains to proposed drain system then to underground detention pond Roof drains to proposed drain system then to underground detention pond Roof drains to proposed drain system then to underground detention pond Roof drains to proposed drain system then to underground detention pond O O E. O it EE T T O O O O 1545 K K Roof drains to proposed drain system then to underground detention pond Roof drains to proposed drain system then to underground detention pond Roof drains to proposed drain system then to underground detention pond Roof drains to proposed drain system then to underground detention pond O O S_ O_ Q Q EEEE T T O O O O O O K K O O S_ O_ Q Q T T O O O O O O K K Drains to DA A-21 then to proposed curb inlet then to underground detention pond Drains to DA A-6 then to proposed grate Inlet then to underground detention pond Drains to DA A-7 then to proposed grate Inlet then to underground detention pond Drains to DA A-16 then to proposed grate Inlet then to underground detention pond Drains to DA A-17 then to proposed grate Inlet then to underground detention pond Drains to DA A-19 then to proposed grate Inlet then to underground detention pond Drains to DA A-21 then to proposed curb inlet then to underground detention pond Drains to Ramey Ave. Drains to South Edgewood Ate. * OFFSITE AREA 4.757 0.56 15.00 3.32 8.84 4.86 12.95 7.98 21.26 Drains to South Hughes Ave then to ex.curb inlet Total 4.757 8.84 12.95 21.26 *This offsite drainage area is shown as part of the analysis for the existing storm drain in Ramet Ave. It does not drain to the site. ; p0 � � LL M fp O O O `r 0 u0 N O `J N O W N O u0 O O 0 c,`J O N0 0 th N o O O o O o o 0 0 0 0 o O O M o O M N 0 0 0 N O 0 0 O N 0� N � � N N T cj N -. o Qt o = m m r r m m r r m m r r m m r r m m r r m m r r m m r r m m r r m m r r m m r r m' r r m r r m m r r m' r r m r r m m r r m m r r m m r r m m r r m m r r m r m m r r N N i 3 N O LL NN O O � 0 0 N � 0 O 0 0 yy (O ' O � ° N O O M O O O E O O O �pp O n O N O N� O O N O 0 N 0 0 M N 0 0 N N 0 0 N N 0 0 3 0 0 ! N 0 0 O 0 � 0 0 0 0 0 0 0 0 0 0! 0 t0 0 O N M W � t i. . N '$ v r, R'S :IliO (O t0 N v v t0 t0 N N v v t0 t0 N O v v t0 t0 W a0 v v (O O 0 O v t0 t0 W ap v v (O (O ap a0 v v t0 (O N ap v t0 (O ap a0 v v t0 (O N ap v v t0 (O ap ap v v (O (O . .: v v t0 t0 N N v v t0 (O N ap v v (O (O . .: v v t0 t0 N N v v t0 t0 N N v v t0 t0 N N v v t0 t0 N N v (O (O a0 .: v v (O W v UJ t0 cp N v v Y O LL O O O O O O O O Oz O O N O 0 0 0 0 0 0 0 0 0 O V 0 0 00 0 0 0 0 0 0 0 0 0 ' O D N L" y O 0 H N A 0 L YA MN N N N N MN N NM NM MN MN tNh M MN N MN MN MN N MN MN MN MN MN N N N MN MN MN N N N N N N t'al!',,, NM NM MN N N>C E N C ; C p 0 0 0 0 0 0 0 0 O O O O O O O O O O O O coo O O O O O O O O O O O O O t C d § g U K d .) U b b O G b b G G b b G C b b G C b b C G VS— b b C C 1 b G C b b C C b b G C b b C C b b C C b b G G b b G C b b C C b b G G b b G G V N G .0 N N G N! C C C 5 l0 l0 G G QtO E Q Ln d o vi n d o 0.378 0.034 0.037 0.028 d 0 0 0 .y 0 0 m m 0 0 m N 0 0 0.028 0.083 in rn 0 0 in m 0 0 m In 0 0 In vi 0 0 vi vi 0 0 tO In 0 0 tO inn 0 0 O+ 0 0 N co 0 0 N n 0 0 m e o a 0.238 0.186 0.423 5.228 Drainage Area :7H'?v'2�j17(¢ Q¢¢¢¢¢¢¢¢ 4''7(�' A-14 A-15 I.m7 Q Q Q m m m 2222Wn°?O'2222 m m m m m m m m m m B-14 B-15 NN%%YY o 0 0 0 0 o OS-4c Total Area to Pond 0 3 ti � Total Bypass Area Tota I £6(6I-d# ue'$'N ""!d - 96Gt-L69-LIB auoyd 6uu0aU0u3 ollweD ZOT9L OTti I O£ �ZZ `01TuaauTug OTIWEJ NIV 1d auoa NOIINIZIQ UNI10119111CIN SOI9L SVXH.L `H.umOM LHO3 HAV A Ih1VH DZtiD `9I171, 480117 'OM 1IONIVIII SIIHHVH i �l¥LsUU ollpsup trik , «_nmIV3 am_LLNIZL_am__a, s#SVXML%moo _o 3AV_laZIa ,k_`80 e`00171a SH,HVH ! u II \lGGG ,� MODIFIED RATIONAL METHOD LA hEEE &\] | ))} | ] ! ))) ! ¥ k k a,n os-,:os4O 42. ) Opening Size (ft) Center of Outlet Pipe , , a. a. n Fi.a !!!;!4!!;!! 1 \ )§§\))\\();]i!; | __ ;;iii8 -----�4° )!);\( RESTRICTION PLATE DETAIL 5 Project: Babers Manor Chamber Model - Units - Number of Chambers - Voids in the stone (porosity) - Base of Stone Elevation - Amount of Stone Above Chambers - Amount of Stone Below Chambers - SC-740 Imperial 337 40 624.90 6 12 ft n in MADS StormTech Area of system - 13657 sf Min. Area - 11392 sf min. area StormTech SC-740 Cumulative Storage Volumes Height of System (inches) Incremental Single Chamber (cubic feet) Incremental Total Chamber (cubic feet) Incremental Stone (cubic feet) Incremental Ch 8. St (cubic et) Cumulative Chamber (cubic feet) Elevation (feet) 48 0.00 0.00 455.23 455.23 31142.46 628.90 47 0.00 0.00 455.23 455.23 30687.23 628.82 46 0.00 0.00 455.23 455.23 30231.99 628.73 45 0.00 0.00 455.23 455.23 29776.76 628.65 44 0.00 0.00 455.23 455.23 29321.53 628.57 43 0.00 0.00 455.23 455.23 28866.29 628.48 42 0.05 18.53 447.82 466.35 28411.06 628.40 41 0.16 54.90 433.27 488.18 27944.71 628.32 40 0.28 95.01 417.23 512.24 27456.53 628.23 39 0.60 203.54 373.82 577.35 26944.29 628.15 38 0.80 270.18 347.16 617.34 26366.93 628.07 37 0.95 320.38 327.08 647.46 25749.59 627.98 36 1.07 362.11 310.39 672.50 25102.14 627.90 35 1.18 397.83 296.10 693.93 24429.64 627.82 34 1.27 426.53 284.62 711.15 23735.71 627.73 33 1.36 456.64 272.58 729.22 23024.56 627.65 32 1.45 490.03 259.22 749.25 22295.34 627.57 31 1.52 513.83 249.70 763.53 21546.09 627.48 30 1.58 533.24 241.94 775.18 20782.56 627.40 29 1.64 553.45 233.85 787.30 20007.38 627.32 28 1.70 572.74 226.14 798.88 19220.07 627.23 27 1.75 590.74 218.94 809.68 18421.20 627.15 26 1.80 607.55 212.21 819.76 17611.52 627.07 25 1.85 625.13 205.18 830.31 16791.76 626.98 24 1.89 637.97 200.04 838.02 15961.45 626.90 23 1.93 651.76 194.53 846.29 15123.43 626.82 22 1.97 665.57 189.00 854.58 14277.14 626.73 21 2.01 677.34 184.30 861.64 13422.56 626.65 20 2.04 689.16 179.57 868.73 12560.92 626.57 19 2.07 699.26 175.53 874.79 11692.19 626.48 18 2.10 709.36 171.49 880.85 10817.40 626.40 17 2.13 718.42 167.87 886.28 9936.56 626.32 16 2.15 725.85 164.89 890.74 9050.27 626.23 15 2.18 733.67 161.77 895.43 8159.53 626.15 14 2.20 740.85 158.89 899.74 7264.10 626.07 13 2.21 743.87 157.69 901.55 6364.35 625.98 12 0.00 0.00 455.23 455.23 5462.80 625.90 11 0.00 0.00 455.23 455.23 5007.57 625.82 10 0.00 0.00 455.23 455.23 4552.33 625.73 9 0.00 0.00 455.23 455.23 4097.10 625.65 8 0.00 0.00 455.23 455.23 3641.87 625.57 7 0.00 0.00 455.23 455.23 3186.63 625.48 6 0.00 0.00 455.23 455.23 2731.40 625.40 5 0.00 0.00 455.23 455.23 2276.17 625.32 4 0.00 0.00 455.23 455.23 1820.93 625.23 3 0.00 0.00 455.23 455.23 1365.70 625.15 2 0.00 0.00 455.23 455.23 910.47 625.07 1 0.00 0.00 455.23 455.23 455.23 624.98 t7 ❑ pick for stage Area Data ❑ Click to Invert Stage Area Data Click Here for Metric BABERS MANOR z O O u_ Z 1- 0 w O 0 U a N re re 00 o ❑ z85 00 LL wai a K N N a PROJECT NO: FORT WORTH, TX IMPORTANT - NOTES FOR THE BIDDING AND INSTALLATION OF THE SC-740 SYSTEM SC-740 STORMTECH CHAMBER SPECIFICATIONS CHAMBERS SHALL BE STORMTECH SC-740. z a a ❑ 0 O 62 0 Q Z C 0 0 LL K F 0 m x N ❑ 0 a N x U 5 m N0 Poi a UU STANDARD SPECIFICATION FOR POLYPROPYLENE (PP) CORRUGATED ❑ 0 0 x r a h K z O F U zz K W r Z 0 0 m O zz ow 0 -a zN 0m UO ON OW mU aQ y� N K O 00 wLL mw U � THE FOUNDATION STONE SHALL BE LEVELED AND COMPACTED PRIOR TO PLACING CHAMBERS. JOINTS BETWEEN CHAMBERS SHALL BE PROPERLY SEATED PRIOR TO PLACING STONE. MAINTAIN MINIMUM -6" (150 mm) SPACING BETWEEN THE CHAMBER ROWS. EMBEDMENT STONE SURROUNDING CHAMBERS MUST BE A CLEAN, CRUSHED, ANGULAR STONE 3/4.2" (20-50 mm). RACTOR MUST REPORT ANY DISCREPANCIES WITH CHAMBER FOUNDATION MATERIALS BEARING CAPACITIES TO THE SITE DESIGN NOTES FOR CONSTRUCTION EQUIPMENT ECH SC-740 CHAMBERS SHALL BE INSTALLED IN ACCORDANCE WITH THE "STORMTECH SC-310/SC-740/SC-800/DC-780 CONSTRUCTION rsi 03 SC-310/SC-740/SC-800/DC-780 ERS IS REQUIRED FOR DUMP TRUCK TRAVEL OR DUMPING. 0 U N O E E 0 LL HALL BE USED FOR PERMANENT DEAD LOAD DESIGN CHAMBERS AND END CAPS SHALL BE PRODUCED AT AN ISO 9001 CERTIFIED MANUFACTURING FACILITY. CONTACT STORMTECH AT 1-888-892-2694 WITH ANY QUESTIONS ON INSTALLATION REQUIREMENTS OR WEIGHT LIMITS FOR CONSTRUCTION EQUIPMENT. 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PAVED Y HAVE STRINGENT MATERIAL AND RATION REQUIREMENTS. FTER 12" (300 mm) OF MATERIAL OVER HED. COMPACT ADDITIONAL LAYERS IN O A MIN. 95% PROCTOR DENSITY FOR IAL AND 95% RELATIVE DENSITY FOR GATE MATERIALS. ROLLER GROSS O EXCEED 12,000 Ibs (53 kN). DYNAMIC O EXCEED 20,000 Ibs (89 kN). MPACTION REQUIRED. OLL TO ACHIEVE A FLAT SURFACE " ce 0 w O O r w w r ¢ 0 c1 z o O D U w ZO r a �¢� Px ate¢ dr^(/1 ZU"�❑ wmNr O2¢rz �zrz a'OUw �w� g61aiE wL' v=i Wa_' 3 wja2O >w OQ flHU I =I m zw z O zw Nz0 W (7 m = >� 5[n 1- OX aw❑ aQ 3F 1Bo L zo Ow wWo W z° 2a_' F — U COMPACTION / PREPARE PER SITE INSTALLATIONS MAY PREPA BEGIN COMPACTIONS A THE CHAMBERS IS REACI (150 mm) MAX LIFTS T WELL GRADED MATERI AGGRE VEHICLE WEIGHT NOT T FORCE NOT T NO CO PLATE COMPACT OR R ACCEPTABLE FILL MATERIALS: STORMTECH SC-740 CHAMBER SYSTEMS MATERIAL LOCATION DESCRIPTION AASHTO MATERIAL CLASSIFICATIONS AASHTO M145' A-1, A-2-4, A-3 OR AASHTO M43^ 3, 357, 4, 467, 5, 56, 57, 6, 67, 68, 7, 78, 8, 89, 9, 10 AASHTO M43' 3, 357, 4, 467, 5, 56, 57 AASHTO M43' 3, 357, 4, 467, 5, 56, 57 'z ANY SOIL/ROCK MATERIALS, NATIVE SOILS, OR PER ENGINEER'S PLANS. CHECK PLANS FOR PAVEMENT SUBGRADE REQUIREMENTS. GRANULAR WELL -GRADED SOIL/AGGREGATE MIXTURES, <35% FINES OR PROCESSED AGGREGATE. MOST PAVEMENT SUBBASE MATERIALS CAN BE USED IN LIEU OF THIS LAYER. CLEAN, CRUSHED, ANGULAR STONE OR RECYCLED CONCRETE' CLEAN, CRUSHED, ANGULAR STONE OR RECYCLED CONCRETE' II - III-�jc 'OA' (r4 \ TT =If0 I�II II II*11. i — 1 w- L lir _Iron ON END CAP — 0 6" SUBGRADE SOILS (150 mm) MIN (SEE NOTE 3) "CATION FOR POLYPROPYLENE (PP) CORRUGATED WALL STORMWATER COI DARD PRACTICE FOR STRUCTURAL DESIGN OF THERMOPLASTIC CORRUGA1 STANCE (ALLOWABLE BEARING CAPACITY) OF THE SUBGRADE SOILS AND TE .L FOR BOTH VERTICAL AND SLOPED EXCAVATION WALLS. :HAMBERS SHALL HAVE INTEGRAL, INTERLOCKING STACKING LUGS. GHT OF THE CHAMBER JOINT SHALL NOT BE LESS THAN 2". THE ARCH STIFFNESS CONSTANT AS DEFINED IN SECTION 6.2.8 OF ASTM F24 '1 AT ELEVATED TEMPERATURES (ABOVE 73° F / 23° C), CHAMBERS SHALL BE FINAL FILL: FILL MATERIAL FOR LAYER 'D' STARTS FROM THE TOP OF THE 'C' LAYER TO THE BOTTOM OF FLEXIBLE PAVEMENT OR UNPAVED FINISHED GRADE ABOVE. NOTE THAT PAVEMENT SUBBASE MAY BE PART OF THE 'D' LAYER. INITIAL FILL: FILL MATERIAL FOR LAYER 'C' STARTS FROM THE TOP OF THE EMBEDMENT STONE ('B' LAYER) TO 18" (450 mm) ABOVE THE TOP OF THE CHAMBER. NOTE THAT PAVEMENT SUBBASE MAY BE A PART OF THE 'C' LAYER. EMBEDMENT STONE: FILL SURROUNDING THE CHAMBERS FROM THE FOUNDATION STONE CA' LAYER) TO THE 'C' LAYER ABOVE. FOUNDATION STONE: FILL BELOW CHAMBERS FROM THE SUBGRADE UP TO THE FOOT (BOTTOM) OF THE CHAMBER. ❑ 0 m Q I I 01.91.6CS 4103 and 1101,111,530 09110 am O ONION. NUN 213910381AM 000 NAV 60.100,00 0018012 XI'amMG@ A,A2 _0 _1__ wa;sAs meg ®Ipeiwa ;S `/0A18 NVIA1310:11 _ SC-740 END CAP OPTIONAL INSPECTION PORT ELEVATED BYPASS MANIFOLD k § S 0 E 0 0 § ¥ INSPECTION & MAINTENANCE 4" (100 mm) SDR 35 PIPE , GRATES, FILTERS, AND LIDS; RECORD OBSERVATIONS AND ACTIONS. INSPECT AND CLEAN BASINS AND MANHOLES UPSTREAM OF THE STORMTECH SYSTEM. 2. CONDUCT JETTING AND VACTORING ANNUALLY OR WHEN INSPECTION SHOWS THAT MAINTENANCE IS NECESSARY. 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Exhibit "C" CITY OF FORT WORTH STORMWATER FACILITY OPERATION, MAINTENANCE & INSPECTION 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. 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 Rev. 3/20/2019 1 Isolator° Row O&M Manual The Isolator° Row Introduction An important component of any Stormwater Pollution Prevention Plan is inspection and maintenance. The StormTech Isolator Row is a technique to inexpensively enhance Total Suspended Solids (TSS) and Total Phosphorus (TP) removal with easy access for inspection and maintenance. The Isolator Row The Isolator Row is a row of StormTech chambers, either SC-160, SC- 310, SC-310-3, SC-740, DC-780, MC-3500 or MC-7200 models, that is surrounded with filter fabric and connected to a closely located manhole for easy access. The fabric -wrapped chambers provide for sediment settling and filtration as stormwater rises in the Isolator Row and passes through the filter fabric. The open bottom chambers and perforated sidewalls (SC-310, SC- 310-3 and SC-740 models) allow stormwater to flow both vertically and horizontally out of the chambers. Sediments are captured in the Isolator Row protecting the adjacent stone and chambers storage areas from sediment accumulation. ADS geotextile fabric is placed between the stone and the Isolator Row chambers. The woven geotextile provides a media for stormwater filtration, a durable surface for maintenance, prevents scour of the underlying stone and remains intact during high pressure jetting. A non -woven fabric is placed over the chambers to provide a filter media for flows passing through the chamber's sidewall. The non -woven fabric is not required over the SC-160, DC-780, MC-3500 or MC-7200 models as these chambers do not have perforated side walls. The Isolator Row is designed to capture the "first flush" runoff and offers the versatility to be sized on a volume basis or a flow -rate basis. An upstream manhole provides access to the Isolator Row and includes a high/low concept such that stormwater flow rates or volumes that exceed the capacity of the Isolator Row bypass through a manifold to the other chambers. This is achieved with an elevated bypass manifold or a high -flow weir. This creates a differential between the Isolator Row row of chambers and the manifold to the rest of the system, thus allowing for settlement time in the Isolator Row. After Stormwater flows through the Isolator Row and into the rest of the chamber system it is either exfiltrated into the soils below or passed at a controlled rate through an outlet manifold and outlet control structure. The Isolator Row may be part of a treatment train system. The treatment train design and pretreatment device selection by the design engineer is often driven by regulatory requirements. Whether pretreatment is used or not, StormTech recommend using the Isolator Row to minimize maintenance requirements and maintenance costs. Note: See the StormTech Design Manual for detailed information on designing inlets for a StormTech system, including the Isolator Row. Looking down the Isolator Row from the manhole opening, woven geotextile Fabric is shown between the chamber and stone base. StormTech Isolator Row with Overflow Spillway (not to scale) MANHOLE WITH OVERFLOW WEIR ECCENTRIC HEADER OPTIONAL ACCESS OPTIONAL PRE-TREATMENT STORMTECH ISOLATOR ROW P-Fl1T7Th 8 8 8 4 4 r STORMTECH CHAMBERS Isolator Row Inspection/Maintenance Inspection The frequency of inspection and maintenance varies by location. A routine inspection schedule needs to be established for each individual location based upon site specific variables. The type of land use (i.e. industrial, commercial, residential), anticipated pollutant load, percent imperviousness, climate, etc. all play a critical role in determining the actual frequency of inspection and maintenance practices. At a minimum, StormTech recommends annual inspections. Initially, the Isolator Row should be inspected every 6 months for the first year of operation. For subsequent years, the inspection should be adjusted based upon previous observation of sediment deposition. The Isolator Row incorporates a combination of standard manhole(s) and strategically located inspection ports (as needed). The inspection ports allow for easy access to the system from the surface, eliminating the need to perform a confined space entry for inspection purposes. If upon visual inspection it is found that sediment has accumulated, a stadia rod should be inserted to determine the depth of sediment. When the average depth of sediment exceeds 3 inches throughout the length of the Isolator Row, clean -out should be performed. Maintenance The Isolator Row was designed to reduce the cost of periodic maintenance. By "isolating" sediments to just one row, costs are dramatically reduced by eliminating the need to clean out each row of the entire storage bed. If inspection indicates the potential need for maintenance, access is provided via a manhole(s) located on the end(s) of the row for cleanout. If entry into the manhole is required, please follow local and OSHA rules for a confined space entries. Maintenance is accomplished with the JetVac process. The JetVac process utilizes a high pressure water nozzle to propel itself down the Isolator Row while scouring and suspending sediments. As the nozzle is retrieved, the captured pollutants are flushed back into the manhole for vacuuming. Most sewer and pipe maintenance companies have vacuum/JetVac combination vehicles. Selection of an appropriate JetVac nozzle will improve maintenance efficiency. Fixed nozzles designed for culverts or large diameter pipe cleaning are preferable. Rear facing jets with an effective spread of at least 45" are best. JetVac reels can vary in length. For ease of maintenance, ADS recommends Isolator Row lengths up to 200" (61 m). The JetVac process shall only be performed on StormTech Isolator Rows that have AASHTO class 1 woven geotextile (as specified by StormTech) over their angular base stone. StormTech Isolator Row (not to scale) Note: Non -woven fabric is only required over the inlet pipe connection into the end cap for SC-160LP, DC-780, MC- 3500 and MC 7200 chamber models and is not required over the entire Isolator Row. SC-740, SC-310; COVER ENTIRE ISOLATOR ROW WITH ADS GEOSYNTHETICS 601T NON -WOVEN GEOTEXTILE SG730: 8' (24 m( MIN WIDE SC-310: 5' (1.5 m) MIN WIDE MC-4500, MG7200, DC-780, SC-160LP: COVER PIPE CONNECTION TO END CAP WITH ADS GEOSYNTHETICS 601 T NON -WOVEN GEOTEXI1LE CATCH BASIN OR MANHOLE SUMP DEPTH TBD 6V SITE DESIGN ENGINEER (24. [600 mm[ MIN RECOMMENDED) 24" (600 mm) HDPE ACCESS PIPE REQUIRED: MC-7200, MC-3500, SG740, DC-780 12" (300 mm( HDPE ACCESS PIPE REQUIRED: SC310 8" (200 mm) HDPE ACCESS PIPE REQUIRED: SC-160LP OPTIONAL INSPECTION PORT STORMTECH CHAMBER STORMTECN END CAP TWO LAVERS OF ADS GEOSYNTHETICS 315WT WOVEN GEOTEXTILE BETWEEN FOUNDATION STONE AND CHAMBERS, CONTINUOUS FABRIC WITHOUT SEAMS 10.3' (3.1 m( MIN WIDE: MC-7200 8.25' (2.5 m( MIN WIDE: MC-3500 5' (1.5 m( MIN WIDE: DG780, SC-740 4' (1.2 m) MIN WIDE: SC-310, SC-160LP 3 Isolator Row Step By Step Maintenance Procedures Step 1 Inspect Isolator Row for sediment. A) Inspection ports (if present) i. Remove lid from floor box frame ii. Remove cap from inspection riser iii. Using a flashlight and stadia rod,measure depth of sediment and record results on maintenance log. iv. If sediment is at or above 3 inch depth, proceed to Step 2. If not, proceed to Step 3. B) All Isolator Row i. Remove cover from manhole at upstream end of Isolator Row ii. Using a flashlight, inspect down Isolator Row through outlet pipe 1. Mirrors on poles or cameras may be used to avoid a confined space entry 2. Follow OSHA regulations for confined space entry if entering manhole iii. If sediment is at or above the lower row of sidewall holes (approximately 3 inches), proceed to Step 2. If not, proceed to Step 3. Step 2 Clean out Isolator Row using the JetVac process. A) A fixed floor cleaning nozzle with rear facing nozzle spread of 45 inches or more is preferable B) Apply multiple passes of JetVac until backflush water is clean C) Vacuum manhole sump as required Step 3 Replace all caps, lids and covers, record observations and actions. Step 4 Inspect & clean catch basins and manholes upstream of the StormTech system. 1)B)_ 1)A) IAIAIAIAIAIuIuJ 1 IJ 4 i AIA i l�li������!���lil�lil�lil�lil�l l Sample Maintenance Log 3/15/11 9/24/11 6/20/13 Stadia Ro. •eadin.s Fixed point to chamber bottom (1) 6.3 fE 7/7/13 6.3 fE Fixed point to top of sediment 2 Sedi- ment Depth (1)-(2) NONe Observations/Actions New i,ensEaLL&Etoen. Fixed poisE Ls CI f ranee aE grade 6.2 0.1 f E Some cjrLE f eLE 5.if 0.6 f E Mucky feet, debris vislbie LN maenkoLe and Ln IsoLQEor tow, maLnEenance due a SsEe.v1 jeEEed 0,Na vacuumed Inspector �7M SM Nv D7M ADS "Terms and Conditions of Sale" are available on the ADS website, www.ads-pipe.com The ADS logo and the Green Stripe are registered trademarks of Advanced Drainage Systems, Inc. Stormtech® and the Isolator® Row are registered trademarks of StormTech, Inc. © 2022 Advanced Drainage Systems, Inc. #11011 2/22 CS adspipe.com 800-821-6710 //16DS StormTech 1V FORT WORTH 0 Fort Worth Stormwater Management " EXHIBIT D" STORMWATER UNDERGROUND DETENTION FACILITY MAINTENANCE CHECKLIST FREQUENT INSPECTION Inspection Item: Date: Repairs Required: Repairs Made: Notes: Remove: Trash and Debris Remove: Grass Clippings, Leaves, Etc. MINOR INSPECTION: Inspection Item: Date: Repairs Required: Repairs Made: Notes: Condition of Underground Facility Amount of Silt in Facility Amount of Ponded Water in Facility MAJOR INSPECTION: Inspection Item: Date: Repairs Required: Repairs Made: Notes: Type / Condition of Outfall Structure Size and Condition of Outfall Pipe Evidence of Roots Infiltrating the Facility Evidence of subsidence around facility