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Home My WebLink AboutContract 50016 CITY SECRETARY CONTRACT NO. _ DOE#101058 STORMWATER FACILITY MAINTENANCE AGREEMENT THIS AGREEMENT, made and entered into this l�'day of 2017, by and between M and W Real Estate Development, LLC, hereinafter referred to as "Landowner",and the City of Fort Worth,hereinafter referred to as"City". WITNESSETH WHEREAS, the Landowner is the owner of certain real property described as an approximately 9.485 acre tract located in the James R. Knight Survey, Abstract 902, Tarrant County, Texas according to the deed recorded as Instrument No. D215168038 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 Alta Vista Business Park 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 Lenduwjxer, its successors and assigns, the location and dimensions of which is shown and RECEIV Mov T R 2 6 FACILITY MAINTENANCE AGREEMENT 11 PM7 OFFICIAL 'RECORD � CITY OF FORT WORM C NSECRETARY CITY f more particularly described by metes and bounds in the attached Exhibit "A" ("Facility Property");and NOW, THEREFORE, in consideration of the foregoing premises, the mutual covenants contained herein, and the following terms and conditions, the parties hereto agree as follows: 1. The Landowner, its successors and assigns, shall adequately construct and maintain the on-site Stormwater Management Facility ("Facility") at no expense to the City of Fort Worth in accordance with the design specifications for the Facility, attached as Exhibit"B",and the current standards then in force and effect in the City of Fort Worth and with the Operations and Maintenance Plan attached to this Agreement as Exhibit "C". The Stormwater Facility includes all pipes, channels or other conveyances built to convey Stormwater to the facility, as well as all structures, improvements, and vegetation provided to control the quantity and quality of the Stormwater. Adequate maintenance is herein defined as good working condition so that these facilities are performing their design functions. The Stormwater Structural Control Maintenance Checklists, attached to this Agreement as Exhibit "D", are to be used to establish what good working condition is acceptable to the City. 2. The Landowner, its successors and assigns, shall inspect the Facility and submit an inspection report to the City annually. The purpose of the inspection is to assure safe and proper functioning of the Facility. The inspection shall cover the entire Facility, berms, outlet structure, pond areas, access roads, etc. Components of the Facility, which need maintenance or replacement to perform their design function, shall be noted in the inspection report along with the corrective actions to be taken. 3. The Landowner, its successors and assigns, hereby grant permission to the City, its authorized agents and employees, to enter upon the Property and to inspect the Facility Property whenever the City deems necessary. The purpose of inspection is to follow-up on reported deficiencies and/or to respond to STORMWATER FACILITY MAINTENANCE AGREEMENT 2 Rev.11/17/2016 citizen complaints. The City shall provide the Landowner, its successors and assigns, copies of the inspection findings and a directive to commence with the repairs if necessary. 4. In the event the Landowner, its successors and assigns, fails to maintain the Facility in good working condition as specified herein, the City, its authorized agents and employees, may enter upon the Facility Property and take whatever steps necessary to correct deficiencies identified in the inspection report and to charge the costs of such repairs to the Landowner, its successors and assigns. It is expressly understood and agreed that the City is under no obligation to routinely maintain or repair said Facility, and in no event shall this Agreement be construed to impose any such obligation on the City, such obligation is Landowner's. 5. The Landowner, its successors and assigns,will perform the work necessary to keep the Facility in good working order as appropriate. In the event the City pursuant to this Agreement,performs work of any nature,or expends any funds in performance of said work for labor, use of equipment, supplies, materials, and the like, the Landowner, its successors and assigns, shall reimburse the City upon demand, within thirty (30)days of receipt thereof for all actual costs incurred by the City hereunder. In the event that Landowner or its successors or assigns fail to pay the City for the costs incurred under this section, the City shall impress a lien for the costs of such work upon other lots owned by the Landowner. Such lien shall be perfected by filing in the office of the County Clerk of Tarrant County, Texas an affidavit identifying the property to be charged with such lien, stating the amount thereof, and making reference to this Agreement. 6. This Agreement imposes no liability of any kind whatsoever on the City. THE LANDOWNER AGREES TO HOLD THE CITY HARMLESS FROM ANY LIABILITY IN THE EVENT THE FACILITY FAILS TO OPERATE PROPERLY. LANDOWNER COVENANT AND AGREE AND DOES HEREBY INDEMNIFY,HOLD HARMLESS AND DEFEND THE CITY OF FORT WORTH, ITS AGENTS, SERVANTS AND STORMWATER FACILITY MAINTENANCE AGREEMENT 3 Rev.11/17/2016 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.11/17/2018 Executed this5�_day of"A"--2017. Landowner City of Fort Worth M and W Real Estate Development, LLC Name: Michael D. Masters Jesus J. Chapa Assistant City Manager Ap ed as orm and Legality A sistant City Attorney ATTEST O�F....RT� City SecretW =OM ; BRED 07PICIAL RCO I) CITY SECRETAFY 'r woRm,TX STORMWATER FACILITY MAINTENANCE AGREEMENT 5 Rev.11/17/2016 STATE OF TEXAS § COUNTY OF TARRANT § This instrument was acknowledged before me on U 6U � 30��7 by Jesus J. Chapa, Assistant City Manager of the City of Fort Worth, on behalf of the City of Fort Worth. M.t4atary iG ft 2256490 . Exp;ns December 19,2021 NotAry Public, State of Texas o� STATE OF TEXAS § COUNTY OF TARRANT § Before me, the undersigned authority on this day of 2017, personally appeared Michael . asters, known to a to be e person whose name is subscribed to the foregoing instrument and acknowledged to me that the same is the act of Fs-,j� _ (� LLL, and that he executed the same as its P0,, ��- and as the act of such and for the purposes and consideration expressed in the foregoing instru ent. Notary Public, State of lQas MELISSA HAILEY * MY COMMISSION EXPIRES nZf �' June 26,2019 STORMWATER FACILITY MAINTENANCE AGREEMENT 6 Rev.11/1712016 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. anie S. Morales Development Manager EXHIBIT "A" INSERT LEGAL DESCRIPTION STORMWATER FACILITY MAINTENANCE AGREEMENT 7 Rev.11/17/2016 EXHIBIT A DRAINAGE EASEMENT TRACT 1: Being 0.329 acres of land located in the James R. Knight Survey, Abstract No. 902, Tarrant County, Texas, being a portion of Lot 3, Hinton Heights Addition, an addition to the City of Fort Worth, Tarrant County, Texas according to the plat recorded in Volume 388-138, P. 72, Plat Records, Tarrant County, Texas. Said 0.329 acres of land being more particularly described as follows: BEGINNING at a point located in said Lot 3, from which a 5/8" iron rod found at the northeast corner of said Lot 3 bears N12°24'04"E 81.56 feet, said iron rod being the southeast corner of Lot 4, of said Hinton Heights Addition; THENCE S00°18'36"E, a distance of 89.70 feet to a point; THENCE S89042'56"W, a distance of 93.80 feet to a point; THENCE northerly, 127.53 feet along a non tangent curve to the right, having a radius of 106.58 feet, a central angle of 68033'23" and a chord bearing N15048'10"W, 120.05 feet to a point; THENCE N87°18'11"E, a distance of 94.70 feet to a point; THENCE southeasterly, 48.37 feet, along a curve to the right, having a radius of 30.00 feet, a central angle of 92°23'13" and a chord bearing S46°30'13"E 43.30 feet to the point of beginning, containing 0.329 acres of land. TRACT 2: Being 1.315 acres of land located in the James R. Knight Survey, Abstract No. 902, Tarrant County, Texas, being a portion of Lots 3 and 4, Hinton Heights Addition, an addition to the City of Fort Worth, Tarrant County, Texas according to the plat recorded in Volume 388-138, P. 72, Plat Records, Tarrant County,Texas and being a portion of a tract of land described in the deed to Mike Masters, recorded in County Clerk's No. D208344765 and fully described in County Clerk's No. D204122460, Deed Records, Tarrant County, Texas. Said 1.315 acres of land being more particularly described as follows: BEGINNING at a point located in said Mike Masters tract, from which an 1/2" iron rod stamped "Beasley RPLS 4050" set at the northwest corner of said Mike Masters tract bears N79017'42"W 65.17 feet; THENCE S78°29'47"E, a distance of 52.24 feet to a point; THENCE S86035'49"E, a distance of 41.52 feet to a point; THENCE N88'1 1'27"E, at 171.84 feet passing the west line of said Lot 4, in all a distance of 200.17 feet to a point; THENCE southeasterly, 55.56 feet, along a curve to the right, having a radius of 35.00 feet, a central angle of 90057'28"and a chord bearing S46'1 9'49"E 49.91 feet to a point; THENCE S00051'06"E, a distance of 42.08 feet to a point; THENCE southwesterly, 22.61 feet, along a curve to the right, having a radius of 17.50 feet, a central angle of 74°02'29" and a chord bearing S36'10'09"W 21.07 feet to a point of reverse curve to the left having a radius of 56.50 feet and a central angle of 72°14'29'; THENCE southwesterly along the arc, a distance of 71.24 feet to a point; THENCE S00°49'51"E, a distance of 67.24 feet to a point, from which an 1/2" iron rod stamped "Beasley RPLS 4050"set at the southeast corner of said Mike Masters tract bears S67°54'30"W 13.16 feet; THENCE N89045'21"W, at 12.22 feet passing the west line of said Lot 3, in all a distance of 183.90 feet to a point; THENCE northwesterly, 22.30 feet, along a curve to the right, having a radius of 20.00 feet, a central angle of 63°52'50" and a chord bearing N57°48'56"W 21.16 feet to a point of reverse curve to the left having a radius of 587.35 feet and a central angle of 04°10'30"; THENCE northwesterly along the arc, a distance of 42.80 feet to a point; THENCE N30003'01"W, a distance of 78.12 feet to a point; THENCE northerly, 76.49 feet along a non tangent curve to the right, having a radius of 142.16 feet, a central angle of 30°49'35"and a chord bearing N1 3'35'47"W, 75.57 feet to a point; THENCE N01049'01"E, a distance of 29.60 feet to the point of beginning, containing 1.315 acres of land. The bearings recited hereon are oriented to NAD83 Texas North Central Zone. SHEET 1 OF 3 SEE 8-1/2"X11"PLATS ATTACHED Dick S. Jones Registered Professional Land Surveyor No. 5524 REGISTERED PROFESSIONAL SURVEYORS PRIVATE DETENTION ESMT. LINE TABLE LINE BEARING LENGTH S1 N122404"E 81.56 ERI S. S2 S00'18'36"E 89.70 UM SUR�S LP. S3 S89'42'56'W 93.80 S4 N87'18'11"E 94.70 EASLEY SS N79'17'42'w 65.17 LAND -TOPOGRAPHIC S6 S78'29'47'E 52.24 •CONSTRUCTION SURVEYING S7 S66.35'49"E 41.52 FIRM NO. 10094900 S8 N881 1"27"E 200.17 METRO 817-429-0194 S9 S00'51'06"E 42.08 S10 S00'49'51'E 67.24 P. 0. BOX 8873 FAX 817-446-5488 S11 N89'45'21'W 183.90 FORT WORTH. TEXAS 76124 hsbeasleyOmsn.com S12 N30Y13'01'W 78.12 S13 N01'49'01'E 29.60 1/2-IRF Lot 4 I ALS Hinton Heights Addition I L V. 388-138, P. 72 P.R.T.C.T. m M V_ les LO I N _16 .P o �� Q 5L . /I'IRF 0., i - '90 M I 5/8-IRF CS2 / CPRIVATEDETENJON a I � 1/2-IRF CSlS 1s cole I(n t ..........rF NC . JO .. ..%a 5524 y' �e �� o. SU M DICK S. JONES REGISTERED PROFESSIONAL — — LAND SURVEYOR X75. 552-4 5/8-IRF (CM) Prepared 19 May 2017 SHEET 2 OF 3 Revised 19 October 2017 SEE 8-1/2" x 11" ATTACHED NOTES: CM — CONTROL MONUMENT. IRF — IRON ROD FOUND. EXHIBIT B TRACT 1 RS- BUIILDING LINE' DRAINAGE EASEMENT Basis of Bearing — NAD 83 (2011)(Epoch:2010.0000) 0.329 Acres of Land located in Geoid 12A, Texas North Central Zone. Grid bearings. Grid Scale Factor = 0.99984344861 Lot 3. Hinton Heights Addition. 0 60 120 180 recorded In V.388-138. P.72. P.R.T.C.T. Fort Worth. Tarrant County. Texas. SCALE 1'=60' Hinton Heights 3R1 Storrs Water.dwg REGISTERED PROFESSIONAL SURVEYORS \ "'t° Wsta Business Park CC#D207090889' LLC JbERIBERT S. 26 \\ D.R.T.CT. LAW .� LP. 5/B'IRF EASLEY cera \ POINT OF •LAND -TOPOGRAPHIC \ •CONSTRUCTION SURVEYING t/2'IRs \ BEGINNING (CM) t1/8-RE FIRM NO. 100949DO \ METRO 817-429-0194 25 \ P. 0. BOX 8873 FAX 817-446-5488 FORT WORTH, TEXAS 76124 hebeasley0men.com S�C&B \ S6 \ S7 S8 CS \ \ o OF \ \ rot �00 Hintor IH&cgg tax Addi on �>p' 'C 15TERf: •I' 24 \ ate °°^ 4�s f? V. 388-,;y6. 1 7 \ P R," 5/BCkB \�� \ � '�000�G•Caryry�O r a. U) ..DICK•S. JONES CS8 \ n°6.y \ O?�Oa G 9k9 S a r3J�4 a" beotit• p o \ N A �` C Off• 2 ^4N \ F S St°?!O� 23 \ 0 ;a \ ° y�—--CS4 — t��..........• l r o oma. SURd 5/8'IRF \\ O 9011 Co \ cerB \' 0 7-000 o5 \ TRACT 2 I CS5 DICK S. JONES \ �' Vista Meadows ort 3'O \ REGISTERED PROFESSIONAL � Nh tP� \ dp o°s \ PRIVATE DETENTION � Cab. A, Sid. 11005 r� \ EASEMENT LAND SURVEYOR No. 5524 22 P.R.T.C.T. h6t \ ��\ Prepared 24 May 2017 5/8-IRF carB �opmt, o \ Revised 19 2017 t, , :o ryry CS7 \\ \ 21 `�a dl'z G \\ \\ O \ \ 5/8 "FP CI B CS6 Sl l t PpI SHEET 3 OF 3 1!2'IRF t/2'IRs °Ay®¢ SEE 8-1/2" x 11" ATTACHED ALS \ .�e� Kenneth L Thorne \ \ roc QQ- 20 CC#D,2042.1742 NOTES: \ T. CM— CONTROL MONUMENT. EXHIBIT B TRACT 2 IRF-IRON ROD FOUND. - DRAINAGE EASEMENT RS— IRON ROD SET. PRIVATE DETENTION ESMT.CURVE TABLE BL— BUILDING UNE. Curve Delta Rcd(us en9 R Chord—Dir Chord __ cS1 68'33'23- 106.58 2'53___ N15.4810"W ,2ED 1.315 Acres of Land located in Basis of Bearing— NAD 83(2011)(Epoch:2010.0000) CS2 _ 92`23',3" 30,00 48.37 54t.'3012E, 43.30 Goold 12A,Texas North Central Zone. Grid bearings. CS3 _ y0.57.28" 35.00 55.56 546'19'49'E 49.91 Lot 3 and 4. Hinton Heights Addition 74'02.29' 17.50 22.6' _ ..S35'1 0'09'W 21,07 Grfd Scale Factor= 0.99984344861 csa and in a tract of land in the C55 _,.., 72'14'29" 56.50 71.24 537.04'09'W...`6.61 0 60 120 1801CS6 63.52'50' 20.DO 22.30 N57'48'56'W 21.'5 James R. Knight Survey. Abstract #902 C57 -.._4110.30" 587.35 42.So N27-57.46'W 42.79 Fort Worth. Tarrant County, Texas. 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Tarrant County,Term bang reWvbn f Lob 3 dna 4.Hinton Hel�lte Adtllt., aaa111m to Ne City of Fart _ WorN,Tartanl Ceunty,Teem rtlinq!o Ns pla!recorded N Vdume 398-138,Page u aumme e. y y,cnnimii,na°,°,ci.l"c 9sasn'9m mrsrsaauu suaeimns 72.Plat R.—o Tarrant County.Tmov, nd being tract of land dmcrlbed In Ne deed to Mkhaa D.Mmte ncortled M Caunly Cl r /pae0 204122 ,Deed R.—d..Tarrant r`c`n cMn ERBERT 5. �ovCounty.Tem.,dna hang tact f land dee .n Ne deed to Van R.MI.,MI.,Jr.. ��O��S m.m WID 91RtfYM9 1J "'°`_•"^"'+ corda0 In County a-/)2131599]97,peetl R-1,.Tomant County.T—,and being EASLEY a total o}9.193 c m f land lomted In Na Jamee R."Ign!Survey,Abvt No.9p2, a r City of Fort Warty,Tarrant County,T.. sneuenox sun=A'mle ,°w'.0 e.r„mw, a'w'w`o,r�r�ec uve a nnw 1 d anm en(kl gat ft Id ewitxren,SiR,za rm,vonTtl. 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FILED FOR ANY PURPOSE FORT WORTH SHEET 2 OF 2 Final Not Lots 3R1,3R2 and ADDITI an addition to the qty T FOA WMh, Tarrant Cwnty,Texoe m n b-9a 1—fan of Lots 3 and 4.Nanton Xeighta Atldltim,an addition to Ne City of FM °y am worth,Tarrant county,Too.yc T.mq to the plat roaareee In Val—38-136.P°qe ]2,Plat Reaxde,Tenant county,Tera.,and being a tract of lane da—ibad In Ne deed y xcaslp¢p rxar'rmww s,xsimxs to Mid, 0.Maetare,r,oardetl N Canty a-/0201122460,0—R—Ift Tartont ERBERT S. quo, vex,., aunty.Teva.,ane being a tract of Iona dncrmed In the deed to wn R.Milts,Jr., M.I THO MAS 4 Rk sR6 eco dee 1n County Op OD21315 M7.Deed R..",Tarrant county,Texas old being EASLEY a total of 9.165 tree f lone Iaaoted In the James R Rnlght Survey.AMG No.902, .anu City of Fort Worts,Tyrant County,Teves iuto� an m 2 Commarclal and 1 Reeidentbl Lot .z..rar.arwa,•u� ^"+` "•.•s..,..,.,�.,..: ..,.., ,w.r».loos In Ra nm eeMn.,,mei, rmn••,-•n x oe«r.v fni;.a«s•m ry ..r•sten r w..r mwn.vu P,,p—Aprl 2016 .� r PHASE I y •tom - }' ALTA VISTA SARK INESS 3"' • �•T'{tl � J 1 '11 �,~l R1ANpTA.GM .w �' rv4��'�' w i _ �L�L •e-Qa.{ti .s�. n __ !I 11 {MI wL11iw tD.W 1W. t "�,�.t`. sac.++;•-=_._ :.;-; �� ---------- - ._ �• • hj� »(� .4mR I 1 1. ..�..� \. .+•',, ,'YI l INde..b.. 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Y I M NEVJSpN9 dwu.v wra:..zuweeru•n ay..uvrrr.ew.r urrurou..o m:. � �� . `'.. r mrr auvr uwr .rrmn+.urrmmu uruw..rrm wuru+�rmuuuurr•mcdw �.us w DATE r� r.�rr—.r nr ry RW PROJECTNUNBER �ut3� URBAN FORESTRY' f i emm.-w rnuew��rwia.wvr.wr.w uowu un.m.n��usovim.,wxrrwr. —�u��e�vY'mum-�,�µ�� w�r�nrMVGiI-IRUHN iNEEPLINIINGIFF£SYGLI UNOEN�h w�U U F 1 •0( srm m F EXHIBIT B - POND A 0 JTH,omAs WATER , PAVING , DRAINAGE , & STREET IMPROVEMENTS F3973 W.ORT WORHERY 7610.,SUITE 103 P7 FAX (817)732 9841 REGISTRATION NO.F-9435 WT N0.- 678001 TO SERVE ALTA VISTA BUSINESS PARK war r `s t 77 a- 1 • . 1m P •: B _ SCALE 1"= 150 /•...:............+«.......i...� � MICHAEL A. THOMAS � `• FEET 5..........................yo 0 75 150 300 �� S 93640 �Pa'`�-ti;wENs„�O�S�� OVERALL GRADING PLAN '�� ;l10/13/17 �" EXHIBIT B - POND A WOTHOMAS WATER , PAVING, DRAINAGE, & STREETIMPROVEMENTS TO SERVE F3973 W.V I(CKEYORT WORTH,TX8761D.0'SUITE 103 PHONE•X8171732 9849 ALTAVISTA BUSINESS PARK REGISTRATION NO.F-9435 WT NO.- 678-001 \\\1 N 89007' 17" E 328.33' - W 45 —7— "s 746 .. �\ _\ _— L / ICL CROWN- ---- ------- WIDTH MIN. 748 O \ 747 746 oma. 745 744 �\l 7111 \ f .. .... SCALE 1"=20' � \ � '° S � FEET \ o io 20 40 \� \\ \\ ,�••0s93640 *_� GRADING PLAN71 .3117 EXHIBIT B - POND A JTHOMAS WATER, PAVING, DRAINAGE, & STREET IMPROVEMENTS TO SERVE F3973 W.VICKEYORT WORTH,TX876107'S ITE 103 FAX NE-817 732-9839 817)71 REGISTRATION NO. 678-00 F-9435 NUT N0.• 678-001 ALTA VISTA BUSINESS PARK OUTFALL STRUCTURE FL 742.17 e .! 4-=17 746 4H1V -^4 L- - 1 — 747 — — — --- -- MAX —�• ., , .:.. FG 747.50 . FG 747.50 FG 748.50 � ` FG 747.50 FG 747.50 —WJDLwgk-L " ,SOILLWAY .. ' TP 751.68 _ FG 747.5Q •' '�. .,° FG 747.50 f. a 747 i ' 746 ,,: 4H:1V 745FG 748.50 TP 751.68 X 744 i TP 750.93 TP 751.78 743 i / TP 751.78 ®1 OUTLET STRUCTURE P,,..•°�••:` 9 FL 742.49 I �'-� TP 751.68 *s • .*�� I TP 750.93 I TP 751.78 _. ................... .x.'. / MICHAEL A. TZ.` /.... Li ..........................� �+ 093 93640 s- 10/13/17 � TP 752.18 TP 751.61 TP 752.28 FEET 0 10 20 40 GRADING PLAN 2 �'%' TP 751.11 TC 752.18 ----- G 751.68 _3 EXHIBIT B - POND A HMA WATER, PAVING, DRAINAGE, & -� STREET IMPROVEMENTS 10 SERVE FORT WORTH, TX 76107,SUITE 103 FAX- (817)732-9839 T (817)71 REGISTRATION N0.F•9435 M 678-00 JT N0.- 678-001 ALTA VISTA BUSINESS P A R K-ET STRUCTURE LLJ TP 751.68 hL /42.49 �i TP 750.93 Z � 'Q TP 751.78 I W 0-t.,a............... .'s.:.� TP 752.18 MICHAEL A THOMAS; j� _ TP 752.28...g..............>. TP 751.61 ®®�9q 93640 a ��'�FS��CEN5E��'�m• s � � —— TP 751.11 TC 752.18 G 751.68 — DETENTIO1 FA�CtLITY — 1 TP 751.08 TC 751.40 —— - - - G 750.90 - ' 4 1V TP 751.71 TP 751.90 t7 752 TP TC 752.76 TC 752.20 52.76 I G 11 752.26 G 751.70 SCALE P=20' t TC 751.00 { 750.50 FEET 0 10 20 40 4 ,44 0' "- Im o FG 752.36 GRADING PLAN 3 EXHIBIT B - POND A WOTHOMAS WATER, PAVING, DRAINAGE, & STREETIMPROVEMENTS TO SERVE 3973 W.VICKERY FORTORTH TX 76107'SUITE 103 FAAXX- (11,7'7329849 REGISTRATION NO.F-9435 MJT NO.- 678-001 ALTA VISTA BUSINESS PARK 752 TP 752.76 TC 752.76 J I G 752.26 /TC 752.20 � G 751.70 ..1*®w v c TP 752.86 "' °'°°°""' TC 751.00 TP 752.36 ..::: A THGWSAS•j � • i�� G 750.50 I '�.•.<t 3640�p.�'w�� FG 752.36 ONA�EN®.�� /17 �4 J 3/13y y TC 751.00 `,. \ G 750.50 Al B 75 '� j TP 750.50 TC 752.20 TP 752.86 TP 752.86 1 149 µ I G 751.70 TG 752.76 '-, TW 750.00 coACCESS RAMP ^. BW 745.50 TP 752.36 10 WIDE 5% SLOP TW 750.25 -- - BW 747.00TG 752.76 � TC 752.20 TP 752.86 ---\-- TW/BW 749.50 - - -r TP 750.50 G 751.70 _\- TW 750.00 w s 00 i BW 747.00 :TW/TC 751.00 � . SCALE 1 =20' FL 747.00\ BW/G 750.50 FEET -_ _- 0 10 20 40 .._.FG 752.36 GRADING PLAN 4 ,� TC 751.00 % 5 G 750.50 ZETP 752.86 EXHIBIT B - POND B WOTHOMAS, WATER PAVING DRAINAGE & STREET IMPROVEMENTS T O SERVE F3973 W.ORT WORTH,RX 7610.SUITE 103 FAHXONE-(91077332 9849 ALTAVISTA BUSINESS PARK REGISTRATION NO.F-9435 MJT N0.- 678-M 751 l � �� 750 ' � �TP 749.87 Ion CSC 1 M EV TP 750.00 SS -\749 FG 752.58 TP 749.75 1po MP 74s TOP 749.75 P THROAT 748.68 4H:1V MAX \ m : TP 749.75 I 747 \ `� FG 7 1.117 I m . { i FL 749.50 4 T 75197 n< i OUTLET STRUCTURE '�-q'll! FL=745.86 i FG 752.58 S`TQR M WATER _ I ENTIQ�N` A-CIl ITY 747 s X 749 750 { N. ® , >s 751 I z . ......................... '� MAX ,.. 753 I `tg............. ... 754 93640 755 � "•'• S �am�c55.1G....... SCALE 1"=20' ... — — — FEET.57 --_ � 1, ! MEV TP 753.90 ' 0 10 20 40 — -- -_ _p4 TP 755.08 MEV TP 754.02 GRADING PLAN 5 6 EXHIBIT B - POND B WJTHOMAS WATER, PAVING, DRAINAGE, & "'ir"I i"T I w ff:f I A7 I-c-pw= STREET IMPROVEMENTS T O SERVE FORTORTH RXB6''"SONE SOS FFA ' •(8817)732988349 ALTA VISTA BUSINESS PARK REGISTRATION N X35 M�T N0_ 6,8-00, -C1— C ---1 --- L---------- -- � - 5/8-IRF UJ- I— I �50 BLE WIDTH PAE FIRE LANE so ------ 751 ------- -- 753 D 754 __ --------752 75- S II Alta it °c" ELECTIC 'EASEMENT r '"" BY SE ARAfE EASEMEN01 0 1 751 \ ,o.+ 0 I _ 4 l o J2"IRF \ 2-STORY BRICK - B n nlwow STORM WATER I / �• -' NTION FACILITY o I O LOT 3 R 1 s 48 7 ,294 \ s 51 i II d 1.61 4 aces \ 52 345 Al vi6to ( \�� - 755 �:4 f 757 -------- .................... o � M=CHAFE A, THOMAS,j SCALE 1"=50' LANE i \, A�a': 93640 ;�e FEETrF <hENSE�•'ZQ �� 5 F II 1 e 1013/17 0 2s so ioo - �a `S�ONAL E. _sEROSION CONTROL PLAN 1 `` �� /(�M) . EXHIBIT B — POND A 0L1JTHOMAS WATER, PAVING, DRAINAGE, & STREET IMPROVEMENTS TO SERVE 3973 W.FORTORTH,TXB76107,SUITE 103 PHONE (817)29SM, REGISTRATION NO,F-9435 MF NO.- 678-001 ALTA VISTA BUSINESS PARK -� Ea 3/0 IK C&B ., \ 89'07'17" 32 .33' to�+w s,a�Ir� 5 ti 9 \I 'e9 746 747 $ 7 7 745 9�g�m avy 745 744 744 743 4 5/8-IRF C&B , \, STORM WATER 23 �� \\ �� , \\ DETENTION FACILITY \\ \ \ 752 MICHAEL A. THOMAS \ \\ \ 93G40 OF �"��`''�l�EN5E�•f +' fid- \\ , � 9 to WK 5x 10113117 SCALE 1' =50' --{ \ FEET N $9`45'21 1/VIRS W � 3 6d28 \ I 0 .." 50 100 U. EROSION CONTROL PLAN 2 `,� vv" °°'''94.13 I g EXHIBIT B0��JTHomAs WATER, PAVING, DRAINAGE, & STREET IMPROVEMENTS T O SERVE Fo W.WORTH,TXBLVD.,7SUITE 103 FAX- •(8817)732 98849 REGISTRATION N0.F-9435 MJT N0.-( 7) 678-001 ALTA VISTA BUSINESS PARK CONSTRUCTION ACTIVITY CONTRACTOR ADVISORY: CONSTRUCTION ACCESS--ENTRANCE TO SITE, CONSTRUCTION THE CONTRACTOR, AND HIS AGENTS, SUB ROUTES, AREAS DESIGNATED FOR EQUIPMENT PARKING CONTRACTOR/ENGINEER/SURVEYOR, ARE COMPLETELY RESPONSIBLE FOR THE VERIFICATION OF THE ACCURACY OF THE SEDIMENT TRAPS AND BARRIERS--BASIN TRAPS, SEDIMENT DIMENSION CONTROL FURNISHED HEREIN. THE OWNER, AND HIS FENCES AND OUTLET PROTECTION AGENTS, ARE NOT RESPONSIBLE FOR THE ACCURACY OF THE COORDINATES FURNISHED. THE CONTRACTOR IS REQUIRED TO VERIFY ALL OF THE COORDINATES FOR ACCURACY AND CONFIRM RUNOFF CONTROL--DIVERSION, PERIMETER DIKES, WATER BARS, THE LOCATIONS OF ALL UTILITIES TO BE CONSTRUCTED, BOTH OUTLET PROTECTION HORIZONTALLY AND VERTICALLY. DISCREPANCIES FOUND BY THE CONTRACTOR SHALL BE REPORTED IN WRITING, TO THE OWNER IMMEDIATELY FOR RECONCILIATION. RUNOFF CONVEYANCE SYSTEM--STABILIZE STREAM BANKS, EXISTING IRRIGATION SYSTEM NOTE: STORM DRAINS, CHANNELS, INLET AND OUTLET PROTECTION, THE CONTRACTOR SHALL PROTECT ALL EXISTING SPRINKLER SLOPE DRAINS HEADS, LINES, ETC. DURING THE DURATION OF CONSTRUCTION, ANY SPRINKLER LINES, HEADS, METERS, VALVES, ETC. THAT LAND CLEARING AND GRADING--SITE PREPARATION (CUTTING, ARE DAMAGED OR RELOCATED BY CONSTRUCTION SHALL BE FILLING, AND GRADING, SEDIMENT TRAPS, BARRIERS, DIVERSION, REPAIRED AND/OR REPLACED TO ORIGINAL CONDITION OR DRAINS, SURFACE ROUGHENING) BETTER (NO SPECIAL PAY). COORDINATE WITH OWNER AND/OR LANDSCAPE IRRIGATION PLANS. SURFACE STABILIZATION--TEMPORARY AND PERMANENT SEEDING, MULCHING, SODDING, RIP RAP BUILDING CONSTRUCTION--BUILDINGS, UTILITIES, PAVING LANDSCAPING AND FINAL STABILIZATION--TOPSOILING, TREES AND SHRUBS, PERMANENT SEEDING, MULCHING, SODDING, RIP �*f� .,,,..:_*�� RAPMICHAELA.�THOMAS + ` 93640 o + �1\\\\`� 10/13/17 EROSION CONTROL NOTES 1 '' •' 9 EXHIBIT B �< WOTHOMAS WATER, PAVING, DRAINAGE, & STREET IMPROVEMENTS TO SERVE F3973 W.VICKERY LVD.,ORT WORTH,7X76107 SUITE 103 FAHXX- (817)732-9839 732- 9841 ALTAVISTA BUSINESS PARK REGISTRATION NO.F-9435 MJT N0.- 676-001 SCHEDULE CONSIDERATION NOTE: THIS IS THE FIRST LAND—DISTURBING ACTIVITY. AS SOON AS 1. ALL CONSTRUCTION METHODS AND MATERIAL SHALL CONSTRUCTION BEGINS, STABILIZE ANY BARE AREAS WITH CONFORM TO THE PROJECT SPECIFICATIONS. IN AREAS GRAVEL AND TEMPORARY VEGETATION. WHERE PROJECT SPECIFICATIONS DO NOT COVER, THE AFTER CONSTRUCTION SITE IS ACCESSED, PRINCIPAL BASIN STANDARD SPECIFICATIONS FOR PUBLIC WORKS SHOULD BE INSTALLED, WITH THE ADDITION OF MORE TRAPS CONSTRUCTION AS PUBLISHED BY THE NORTH CENTRAL AND BARRIERS AS NEEDED DURING GRADING. TEXAS COUNCIL OF GOVERNMENTS (NCTCOG) LATEST EDITION SHALL APPLY. KEY PRACTICES SHOULD BE INSTALLED AFTER THE INSTALLATION OF PRINCIPAL SEDIMENT TRAPS AND BEFORE LAND GRADING. 2. CONTRACTOR SHALL PROVIDE A CONCRETE WASH OUT PIT ADDITIONAL RUNOFF CONTROL MEASURES MAY BE INSTALLED PER NCTCOG BEST MANAGEMENT PRACTICES. DURING GRADING. IF NECESSARY, STABILIZE STREAM BANKS AS SOON AS POSSIBLE, AND INSTALL PRINCIPAL RUNOFF CONVEYANCE SYSTEM WITH RUNOFF CONTROL MEASURES. THE REMAINDER OF THE SYSTEMS MAY BE INSTALLED AFTER GRADING. IMPLEMENT MAJOR CLEARING AND GRADING AFTER INSTALLATION OF PRINCIPAL SEDIMENT AND KEY RUNOFF—CONTROL MEASURES, AND INSTALL ADDITIONAL CONTROL MEASURES AS GRADING CONTINUES. CLEAR BORROW AND DISPOSAL AREAS AS NEEDED, AND MARK TREES AND BUFFER AREAS FOR PRESERVATION. TEMPORARY OR PERMANENT STABILIZING MEASURES SHOULD BE APPLIED IMMEDIATELY TO ANY DISTURBED AREAS WHERE WORK HAS BEEN EITHER COMPLETED OR DELAYED. DURING CONSTRUCTION, INSTALL ANY EROSION AND SEDIMENTATION CONTROL MEASURES THAT ARE NEEDED. �,r THIS IS THE LAST CONSTRUCTION PHASE. STABILIZE ALL OPEN m ;;• �. ......... B� AREAS, INCLUDING BORROW AND SPOIL AREAS, AND REMOVE a� AND STABILIZE ALL TEMPORARY CONTROL MEASURES. :.:..................... .. Aw .o�..•(T......�o.... i d ccs,.•.CEN;,..S�� EROSION CONTROL NOTES 2 ++�� —+10,13,1710 EXHIBIT B THOMAS WATER, PAVING, DRAINAGE, & - STREETIMPROVEMENTS TO SERVE 3973 W.VICKERY BLVD.,SUITE 103 PHONE-(817)732-9839 ALTA VISTA BUSINESS PARK FORT WORTH,TX.F-9 FAX• (817)732.9841 REGISTRATION NO.F-9435 MUT N0.• 678-001 SEDIMENT CONTROL NOTES: 1. ALL CONSTRUCTION METHODS AND MATERIAL SHALL CONFORM TO THE PROJECT SPECIFICATIONS. IN AREAS WHERE PROJECT SPECIFICATIONS DO NOT COVER, THE STANDARD SPECIFICATIONS FOR PUBIJC WORKS CONSTRUCTION AS PUBLISHED BY THE NORTH CENTRAL TEXAS COUNCIL OF GOVERNMENTS (NCTCOG) LATEST EDITION SHALL APPLY 2. EROSION CONTROL MEASURES SHALL FOLLOW THE STORM WATER POLLUTION PREVENTION PLAN (S.W.P.P.P.) THAT IS KEPT ONSITE AT ALL TIMES WITH THESE CONSTRUCTION DOCUMENTS FOR COMPLIANCE WITH THE T.P.D.E.S. GENERAL PERMIT 3. IN ORDER TO MINIMIZE EROSION CONTROL PROBLEMS, GENERAL CONTRACTOR SHALL COORDINATE WITH EXCAVATOR LANDSCAPE,_ AND IRRIGATION CONTRACTORS TO DETERMINE EARLIEST POSSIBLE DATE TO INSTALL GRASSING AS NOTED ON THE LANDSCAPE PLAN 4. THE STABILIZED CONSTRUCTION ENTRANCE HAS BEEN SHOWN ARBITRARILY. IT IS THE GENERAL CONTRACTOR'S CHOICE (IN COMPLIANCE WITH ALL CITY AND STATE REGULATIONS) TO DETERMINE THE LOCATION(S) OF PROJECT INGRESS / EGRESS POINTS. HOWEVER ALL ENTRANCES AT ALL TIMES SHALL BE PREPARED IN ACCORDANCE WITH THE STABILIZED CONSTRUCTION ENTRANCE DETAILS AND CONTINUOUSLY MAINTAINED UNTIL FINAL PAVING IS ESTABLISHED. CHANGES TO THIS EROSION CONTROL PLAN ARE TO BE LOGGED IN THE SWPPP 5. STABILIZED SLOPES (CURLEX BLANKET AND 70% COVER OF VEGETATION) ACHIEVING EROSION-FREE CONDITIONS MUST BE IN PLACE AND EFFECTIVE BY THE PROJECT 'POSSESSION DATE". 6. A TEMPORARY ALL-WEATHER SURFACE TO AND COMPLETELY AROUND THE BUILDING PAD SHALL BE REQUIRED DURING CONSTRUCTION. CONTRACTOR SHALL COORDINATE WITH FIRE ®� MARSHALL TO DETERMINE ANY VEHICULAR FIRE ACCESS REQUIRED P OF if DURING CONSTRUCTION .......�••,••,."•`.••.', B/ 7. THE EROSION CONTROL PLAN WILL INCORPORATE EROSION ,.. '• + / CONTROL MEASURES AND TECHNIQUES TO PREVENT SEDIMENTATION AND ERODED SOIL FROM LEAVING THE SITE MCHAEL A. THOMAS EITHER IN EXISTING STORM DRAIN SYSTEM OR ONTO ADJACENT �•••-:•-••-••••••••••••••••-:•• PRIVATE AND PUBLIC PROPERTY. CONSTRUCT TEMPORARY EROSION l �• 93640 CONTROL SYSTEMS AS SHOWN ON THE PLANS TO PROTECT ENSE4rR SHALL NOTIFY CONSULTING � � ADJACENT PROPERTIES AND WATER RESOURCES FROM EROSION AL 10/13 10/13/'" EROSION RAT CONTROL AND IF SITE CN. ONDITIONS TOR WARRANTIS PIADDITIONALFOR TAKING IMMEDIATE ACTION TO REMEDY EROSION CONTROL WHILE CONSULTING ENGINEER IS PREPARING RESPONSE EROSION CONTROL NOTES 3 11 EXHIBIT B zc'< ETIJTHOMAS WATER, PAVING, DRAINAGE, & STREET IMPROVEMENTS TO SERVE 3973 W.VICKERY BLVD.,SUITE 103 PHONE-(817)732-9839 FORT WORTH, FAY 32-90•'+ ALTA VISTA BUSINESS PARK N REGISTRATION N0..F-9 F-9435 M;"- n1n r;�A_nu= 8. THE CONTRACTOR SHALL STABILIZE THE EARTHEN SLOPE AREAS IN ACCORDANCE WITH THE LANDSCAPE PLAN WITHIN 72 HOURS AFTER FINAL GRADE AND TOPSOIL HAS BEEN ESTABLISHED IN ACCORDANCE WITH THE PROJECT SITEWORK SPECS 9. THE SPECIFIC PLANT MATERIALS PROPOSED TO PROTECT FILL AND EXCAVATED SLOPES SHALL BE AS INDICATED ON THE PLANS. PLANT MATERIALS MUST BE SUITABLE FOR USE UNDER LOCAL CLIMATE AND SOIL CONDITIONS. IN GENERAL, HYDRO SEEDING OR SODDING BERMUDA GRASS IS ACCEPTABLE DURING THE SUMMER MONTHS (MAY 1 TO AUGUST 30). WINTER RYE OR FESCUE GRASS MAY BE PLANTED DURING TIMES OTHER THAN THE SUMMER MONTHS AS A TEMPORARY MEASURE UNTIL SUCH TIME AS THE PERMANENT PLANTING CAN BE MADE 10. PRIOR TO COMMENCING ANY CONSTRUCTION, A CONSTRUCTION ENTRANCE AND PERIMETER SILT FENCE SHALL BE INSTALLED AT THE LOCATION(S) SHOWN 11. AS INLETS ARE COMPLETED, TEMPORARY SEDIMENT BARRIERS SHALL BE INSTALLED 12. AT THE COMPLETION OF THE PAVING AND FINAL GRADING, THE DISTURBED AREA(S) SHALL BE REVEGETATED IN ACCORDANCE WITH THE PLANS 13. SILT FENCE AND INLET SEDIMENT BARRIERS SHALL REMAIN IN PLACE UNTIL REVEGETATION HAS BEEN COMPLETED 14. DISTURBED AREAS THAT ARE SEEDED OR SODDED SHALL BE CHECKED PERIODICALLY TO SEE THAT GRASS COVERAGE IS PROPERLY MAINTAINED. DISTURBED AREAS SHALL BE WATERED, FERTILIZED, AND RESEEDED OR RESODDED, IF NECESSARY 15. ALL EROSION CONTROL MEASURES TO BE PLACED BASED ON CONTRACTOR'S BEST JUDGMENT AND CONSTRUCTION PHASING TO MINIMIZE SILT RUNOFF TO THE MAXIMUM EXTENT PRACTICABLE �.� OF B 16. TEMPORARY INLET PROTECTION TO BE REMOVED OR ADDED BASED v,,.••••••••T ON EXISTING STORM SEWER REMOVAL AND/OR PROPOSED STORM �,.� SEWER CONSTRUCTION. FUNCTIONING INLETS SHALL BE INLET 'p*= %* �� PROTECTED AT ALL TIMES. (USE PIPE INLET PROTECTION IF ... NEEDED) MICHAEL A, THOMAS 17. SHOWN CONSTRUCTION ENTRANCES TO BE PLACED, MODIFIED ON .........................:...� THIS PLAN AND LOGGED IN THE SWPPP BASED ON �9••• 93640 :�¢= CONSTRUCTION MANAGER'S ON—SITE DECISIONS TO CONTROL ��F•�?;ENS �•'� EROSION TO THE MAXIMUM EXTENT PRACTICABLE CONSTRUCTION +1ENTANCES T RACTORSHALL TO BE PLACED ES GN ANDWASH DON CONSTRUCT CONSTRUCTION H OUTG 1d;\!`�� 10/13/17 18. CONPIT AND CONTAINMENT BASIN IN ACCORDANCE WITH THE STORM WATER POLLUTION PLAN FOR THE PROJECT AND SUBMIT PROPOSED LOCATIONS TO THE ENGINEER FOR APPROVAL PRIOR TO BEGINNING ANY CONSTRUCTION EROSION CONTROL NOTES 4 12 EXHIBIT B wJTHomAs WATER, PAVING, DRAINAGE, & STREET IMPROVEMENTS TO SERVE PHONE-(817)732.9839 FAX- (817)7324 41 ALTA VISTA BUSINESS PARK MJT NO.- 676-001 CONCRETE WASH-OUT PIT NOTES: 1. CONTRACTOR SHALL PROVIDE A WASH-OUT AREA, AS SPECIFIED IN THE NORTH CENTRAL TEXAS COUNCIL OF GOVERNMENTS NCTCOG) iSWM MANUAL FOR CONSTRUCTION LATEST EDITION, WITH A MINIMU OF 6 CUBIC FEET OF CONTAINMENT AREA VOLUME FOR EVERY 10 CUBIC YARDS OF CONCRETE POURED 2. CONTRACTOR SHALL NOT DUMP WASTE CONCRETE ILLICITLY OR WITHOUT PROPERTY OWNER'S KNOWLEDGE AND CONSENT 3. OVERFLOW OF WASHDOWN WATER SHALL BE DISCHARGED IN AN AREA PROTECTED BY ONE OR MORE SEDIMENT REMOVAL BMPS AND SHALL BE DONE IN MANNER THAT DOES NOT RESULT IN A VIOLATION OF GROUNDWATER OR SURFACE WATER QUALITY STANDARDS 4. CONTRACTOR SHALL COMPLY WITH ALL REQUIREMENTS SET FORTH IN TPDES GENERAL PERMIT TXR 150000 MAINTENANCE: ALL MEASURES STATED ON THIS EROSION CONTROL PLAN, AND IN THE STORM WATER POLLUTION PREVENTION PLAN SWPPP SHALL BE MAINTAINED IN FULLY FUNCTIONAL CONDITION UNTIL NO LONGER REQUIRED FOR A COMPLETED PHASE OF WORK OR FINAL STABILIZATION OF THE SITE. ALL EROSION AND SEDIMENTATION CONTROL MEASURES SHALL BE CHECKED BY A QUALIFIED PERSON ONCE EVERY SEVEN CALENDAR DAYS AND WITHIN 24 HOURS OF THE END OF A 0.5" RAINFALL EVENT, AND CLEANED AND REPAIRED IN ACCORDANCE WITH THE FOLLOWING: 1. INLET PROTECTION DEVICES AND BARRIERS SHALL BE REPAIRED OR REPLACED \\ IF THEY SHOW SIGNS OF UNDERMINING, OR DETERIORATION of r 6 2. ALL SEEDED AREAS SHALL BE CHECKED REGULARLY TO SEE THAT A STAND '••••••••• IS MAINTAINED. AREAS SHOULD BE FERTILIZED, WATERED, AND RESEEDED AS s �'�• / 3. SILTDED FENCES SHALL BE REPAIRED TO THEIR ORIGINAL CONDITIONS IF ...•• ................. �•� / MICHAEL A. THOMAS j DAMAGED. SEDIMENT SHALL BE REMOVED FROM THE SILT FENCES WHEN IT / ,,,,,,,,,,,,,,,,,,,,,,.,,, REACHES ONE-HALF THE HEIGHT OF THE SILT FENCE 93640 :cr 4. THE CONSTRUCTION ENTRANCES SHALL BE MAINTAINED IN A CONDITION / o: k WHICH WILL PREVENT TRACKING OR FLOW OF MUD ONTO PUBLICRIGHT- // �F•�?CENS��'�; CONSTRUCTION ENTRANCES AS CONDITIONS Y Y REQUIRE DEMAND DRESSING OF THE a$le��\!\� `~10/13/17 5. THE TEMPORARY PARKING AND STORAGE AREA SHALL BE KEPT IN GOOD CONDITION (SUITABLE FOR PARKING AND STORAGE). THIS MAY REQUIRE PERIODIC TOP DRESSING OF THE TEMPORARY PARKING AS CONDITIONS DEMAND 12 EROSION CONTROL NOTES 5 EXHIBIT B - 0�JTHoMAS , WATER, PAVING, DRAINAGE , & STREET IMPROVEMENTS TO SERVE PHONE.(837)732.9839 FAX- (817)732.9841 ALTA VISTA BUSINESS PARK MJT NO.. 678-00, 6. OUTLET STRUCTURES IN THE SEDIMENTATION BASINS SHALL BE MAINTAINED IN OPERATIONAL CONDITIONS AT ALL TIMES. SEDIMENT SHALL BE REMOVED FROM SEDIMENT BASINS OR TRAPS WHEN THE DESIGN CAPACITY HAS BEEN REDUCED BY 50% EROSION CONTROL AND SLOPE PROTECTION IMPLEMENTATION: 1. PLACE EROSION CONTROL SYSTEMS IN ACCORDANCE WITH CONSTRUCTION DRAWINGS AND STORM WATER POLLUTION PREVENTION PLAN OR AS MAY BE DICTATED BY SITE CONDITIONS IN ORDER TO MAINTAIN THE INTENT OF THE SPECIFICATIONS AND PERMITS AT NO ADDITIONAL COST TO OWNER 2. DEFICIENCIES OR CHANGES ON CONSTRUCTION DRAWINGS OR STORM WATER POLLUTION PREVENTION PLAN SHALL BE IMPLEMENTED AS SITE CONDITIONS CHANGE 3. OWNER HAS AUTHORITY TO LIMIT SURFACE AREA OF ERODIBLE EARTH MATERIAL EXPOSED BY CLEARING AND GRUBBING, EXCAVATION, BORROW AND EMBANKMENT OPERATIONS AND TO DIRECT CONTRACTOR TO PROVIDE IMMEDIATE PERMANENT OR TEMPORARY POLLUTION CONTROL MEASURES 4. MAINTAIN TEMPORARY EROSION CONTROL SYSTEMS AS DIRECTED BY OWNER OR GOVERNING AUTHORITIES TO CONTROL SILTATION DURING LIFE OF CONTRACT. CONTRACTOR SHALL RESPOND TO MAINTENANCE OR ADDITIONAL WORK ORDERED BY OWNER OR aF GOVERNING AUTHORITIES WITHIN 48 HOURS OR SOONER IF �. REQUIRED AT NO ADDITIONAL COST TO THE OWNER �:•'' I/ 5. CONTRACTOR WILL BE REQUIRED TO INCORPORATE PERMANENT * % EROSION CONTROL FEATURES INTO PROJECT AT EARLIEST 40 t.:......................i PRACTICAL TIME TO MINIMIZE NEED FOR TEMPORARY CONTROLS MICHAEL A. THOMAS f 6. PERMANENTLY SEED AND MULCH CUT SLOPES AS EXCAVATION "'!"""""""'•"...:...may PROCEEDS TO EXTENT CONSIDERED DESIRABLE AND PRACTICAL !I 9 93640 7. SLOPES THAT ERODE EASILY OR THAT WILL NOT BE GRADED FOR /B°�F•<Ic�N5'�A PERIOD 14 ' BE SEEDED ASO WORKDAYS PROGRES EOSRWITHALL WHEAT,TRYE, OARILY OATS �';GNAL 10/13/17 APPLICATION IN ACCORDANCE WITH SECTION 02900 UNLESS OTHERWISE SPECIFIED ON THE CONSTRUCTION DRAWINGS EROSION CONTROL BLANKET: BLANKETS, BIODEGRADABLE, ENCLOSED IN A PHOTODEGRADABLE PLASTIC MESH, INCLUDING STEEL WIRE STAPLES, 6 INCHES LONG. CURLEX I BLANKETS, 8' STITCHING BY AMERICAN EXCELSIOR G 14 COMPANY, OR POLYJUTE STYLE 465 GT BY SYNTHETIC INDUSTRIES EROSION CONTROL NOTES V EXHIBIT B 0� uJTHOMAS WATER, PAVING, DRAINAGE , & STREET IMPROVEMENTS TO SERVE 3973 W.FORT WORTH,TXB76107 SUITE iD3 FAX- (8i7)7322--9841 REGISTRATION N0.F-9435 MJT N0.- 7} 678-001 ALTA VISTA BUSINESS PARK SITE DISTURBANCE NOTES: 1. ALL AREAS OF THE SITE INCLUDING ANY OFF-SITE AREA THAT IS DISTURBED BY CONSTRUCTION ACTIVITIES, SHALL RECEIVE AT A MINIMUM, HYDROMULCH AND 6" OF TOP-SOIL. REFER TO LANDSCAPE, DEMOLITION, GRADING, PAVING, DRAINAGE, WATER, SEWER, IRRIGATION AND SEDIMENT CONTROL PLANS TO DETERMINE ALL LIMITS OF DISTURBANCE. CONTRACTOR SHALL PROVIDE SOD AS REQUIRED ELSEWHERE IN THE PLANS. 2. SUPPLY THE SEEDED AREAS WITH ADEQUATE MOISTURE (6" PENETRATION) AT TEN (10) DAY INTERVALS, IF NEEDED, FOR SEED GERMINATION AND PLANT GROWTH UNTIL ACCEPTANCE BY THE OWNER. WATER THE SEED IN A MANNER WHICH WILL PREVENT EROSION OF THE SOIL. FURNISH ALL WATER TO BE USED. REPAIR WASHOUTS AND OTHER BARE SOIL AREAS IN A SEEDED AREA EITHER BY RE-SEEDING, SPRIGGING, OR SPOT-SODDING, AND PERFORM MAINTENANCE AS NEEDED TO ESTABLISH GRASS IN THE AREA. CONTROL COMPETITIVE WEED GROWTH DURING THE ESTABLISHMENT PERIOD WITH HERBICIDES. CHEMICAL USAGE SHALL BE IN ACCORDANCE WITH THE CURRENT RECOMMENDATIONS OF THE TEXAS AGRICULTURAL EXPERIMENT STATION OR LOCAL SOIL CONSERVATION SERVICE FIELD OFFICE TECHNICAL GUIDES. STRICTLY ADHERE TO ALL FEDERAL, STATE, AND LOCAL LAWS GOVERNING HERBICIDES. WEED CONTROL SHALL BE THE CONTRACTOR'S RESPONSIBILITY WHETHER TOPSOIL IS FROM ON-SITE OR OFF-SITE SOURCES AND ALSO FOR SEEDED AREAS WHICH ARE SPECIFIED NOT TO RECEIVE TOPSOIL. +�?.• "•• 3. ANY AREAS WHICH ARE DISTURBED BY THE CONTRACTOR t r•' ••, �� WHICH ARE NOT SHOWN ON THE DRAWINGS OR SPECIFIED TO REQUIRE DISTURBANCE INCLUDING ANY APPROVED ........MICHAEL..... ..... ;..T � AREAS NOT SHOWN ON THE DRAWINGS, SHALL BE •••r•••••.....•••••••••:•••�i CSUCH ONSIDERED AS UNAUTHORIZED DISTURBED AREAS. ANY x 93640 SHALL BE SEEDED AS CONTRACTOR'S EXPENSE. IN THIS /r+ FSSz•C•ENS�.c� o�'x r NO SEPARATE PAY #�1��>>�;`� 10/13/17 EROSION CONTROL NOTES 7 13 EXHIBIT B 0 JTHOMAS WATER, PAVING, DRAINAGE, & STREET IMPROVEMENTS TO SERVE F3973 W.ORT WORTH,ER X 7BLVD.,SUITE 103 PHONE- (8 7) 732-9841 ALTA VISTA BUSINESS PARK REGISTRATION N0.F-9435 MJT N0.- 678-001 SEQUENCE OF CONSTRUCTION: PHASE I: 1. INSTALL STABILIZED CONSTRUCTION ENTRANCES 2. PREPARE TEMPORARY PARKING AND STORAGE AREA 3. CONSTRUCT THE SILT FENCES ONSITE 4. CONSTRUCT THE SEDIMENTATION BASINS 5. CLEAR AND GRUB THE SITE 6. START CONSTRUCTION OF BUILDING PAD AND STRUCTURES 7. BEGIN GRADING THE SITE PHASE II: 1. TEMPORARILY SEED DENUDED AREAS 2. INSTALL UTILITIES, UNDERDRAINS, STORM SEWERS, CURBS AND GUTTERS 3. INSTALL RIP-RAP AROUND OUTLET STRUCTURES 4. INSTALL INLET PROTECTION AROUND ALL STORM SEWER STRUCTURES 5. PREPARE SITE FOR PAVING 6. PAVE SITE 7. INSTALL INLET PROTECTION DEVICES 8. COMPLETE GRADING AND INSTALL PERMANENT SEEDING AND PLANTING 9. REMOVE ALL TEMPORARY EROSION AND SEDIMENT CONTROL DEVICES (ONLY IF SITE IS STABILIZED) INLET PROTECTION NOTES: 1. FOR DROP INLETS, USE TEMPORARY INSERTS AND BLOCK ��, �� ••r GRAVEL PROTECTION AS DETAILED. 2. FOR CURB INLETS, USE TEMPORARY INSETS. j*;• •`i*fig 3. FOR TRENCH AND GRATE INLETS, USE TEMPORARY INSERTS s"MICHAEL`.A..THO..... AND BLOCK GRAVEL PROTECTION AS DETAILED, ................ FILTREX-TEMPDX ASOXX,RY SWE GHTED WATTLE, ERTS SHALL BE ETCURB GUARD, 140�,••�I 3640�•• �=� -TEMPORARY INSERTS AND OTHER SEDIMENT CONTROLb+ �sSlovaSN�l�`� MEASURES SHALL BE CLEANED OUT ON A REGULAR BASIS 61'1ONA.' � zo/13/17 BY THE CONTRACTOR. EROSION CONTROL NOTES 8 16 EXHIBIT B /� �11TH0MAS WATER, PAVING, DRAINAGE, & STREETIMPROVEMENTS TO SERVE 3973 A 4ICKERY BLVD.SUITE 103 PHONE-(817)732-9839 ALTA VISTA BUSINESS PARK FORTREGI WORTH, NO.F-' FAX- (817)732-9841 REGISTRATION N0.F-9435 MJi N0.- 678-001 DRAINAGE LEGEND EXISTING DETENTION POND ` :i,'EXISTING DITCH <, DRAINAGE FROM SITE: >' DRAINAGE FROM SITE: XX DRAINAGE AREA LABEL Oloo EXISTING = 93.4 cfs Doo EXISTING = 30.9 cfs x.xx ac. ACREAGE OF AREA OS-A.5 ' 1.75 ac �`� r ' � " DRAINAGE DIVIDE DRAINAGE AREA A # 4 ' R REFER TO GENERAL NOTES SHEET FOR EXISTING UTILITY r r-.r 3.47 a CAUTIONARY NOTES AND CONTRACTOR ADVISORY OS-A1 "1 0.98 �': ✓+` 3.17 oc. he t t' 1.54 cc. OS-A2 4.14 ac• F �� !` r _• r ' e OS-A4 OS OS-B3 d d...r 0 g 4.26 ac. 0.59 0.70 ac. �A.�•..... t I� t...y � MICHAEL A��THOMAS �...e...........................� 93640 v Length=700' ` �l�aoC�ss'�4.CENSNGZI��.F+ Avg Slope=0.03 ft/ft0/I3117 \i\ree IV=2.8 fps (Gross) — 3.5 fps (Paved) Ie SCALE I"= 250' Use 4 fps for conservative design FEET Travel Time = 2.9 minutes o 175 25o sco 17 RTCIMNTIA5 MIINUTESE EXISTING DRAINAGE AREA IAP EXHIBIT B �JTHomASi WATER, PAVING , DRAINAGE , & STREET IMPROVEMENTS T O SERVE FORT WORTH,TX 76107 SUITE,G3 DYNE- ,,, K-9841 REGISTRATION NO,89435 I'll:N0.- c?8-rpl ALTA VISTA BUSINESS PARK EXISTING DRAINAGE AREA CALCULATIONS Rational Mefhod Q=CIA AREA ACRES C Tc(min) 11(Infl4r) Is(IntHr) 1100(fnfHr)I Or(cfs) Qs(cis) Qi0Q(cfs) Comments A 5.44 0.44 17 3.10 4.59 7.57 i 7.4 11.0 18.1 Onsite area that drains offsite to existing detention pond to the north OS-A1 0.98 0.67 17 3.10 4.59 757 2.0 3.0 5.0 Residential development that drains through Basin A OS-A2 4.14 0.88 17 3.10 4.59 7.57 1 11,3 16.7 27.6 Industrial develcpment that drains through Basin A OS-A3 3.17 0.88 17 3.10 4.59 7.57 8.6 12.8 21.1 Industrial development that drains through Basin A OS-A4 4,26 1 0.67 17 3.10 1 4.59 1 7.57 8.8 13.1 21.6 Residential development that drains through Basin A OS-A5 1,75 0.88 17 3.10 4.59 7.57 4.8 7.1 11.7 1 Offiste draining directly to existing detention pond to the north_ TOTAL= 43.0 63.7 105.1 B 347 0.45 15 3.32 4,86 7.98 5.2 1 7.6 1 12.5 10nsite area that drains to existing ditch in Alta Vista Blvd. OS-B 1 1,64 0.53 15 3.32 4.36 795 2.9 4.3 70 Industrial development that drains through Basin B OS-82 059 067 15 332 4.86 798 1 3 1.9 32 Residential development that drains through Basin B OS-B3 0.70 -0.6-7 15 3.32 486 7.96 t6 2.3 3.7 Existing ditch lav in Alta Vista Blvd TOTAL= 11.0 16.1 26.4 NOTES: 1)Discharge from drainage areas was obtained using the Rational Method based on current Gty of Fort Worth Storm Drainage Manual 2)Drainage areas were delineated using surveyed property information and NCTCOG genal images and contours. 3)Run-off coefficients for drainage areas were based on their designated land use run-off coefficients. 4)A weighted runoff coefficient was determined for the Onsite basins using a C factor of 0.30 for pervious and 090 for impervious areas. 5)Residential areas designated as'A-S'and right-of-way received a'C'factor of 0.67 6)Neighborhood Commercial areas designated as'E'and Industrial areas designated as T received a C"factor of 0,88 7)The time of concentration of 17 minutes was used for the overall drainage basin. a B gyp' M=ICHAEL A.� Q THOMAS S�q9 ..... ..... 93640 - 'IorJA 10%13/17 18 EXISTING DRAINAGE AREA MAP CALCULATIONS EXHIBIT B �JTHOMAS WATER, PAVING, DRAINAGE , & STREET IMPROVEMENTS TO SERVE 3973 W.VICKERY BLVD.,SUITE 103 Pl-OV°-(617;732.9839 ALTA VISTA BUSINESS PARK FOR-I WARTO 7x .F-9 FAX- 817)732-9641 REGISTRATION NO.F•9435 k1JT N0.- 678.001 PROPOSED DETENTION POND A EXISTING DETENTION POND Q1oo ALLOWABLE = 91.1 cfs DRAINAGE FROM SITE: EXISTING DITCH Q1oo PROPOSED = 90.9 cfs Qloo EXISTING = 93.4 cfs DRAINAGE FROM SITE: STORAGE REQUIRED = 48,849 C.F. (loo PROPOSED = 93.2 cis ri' Q1oo EXISTING = 30.9 cfs ** SE = 746.06** ,;I" - q Qloo PROPOSED = 29.3cfs -- a • OS-A5 1.75 ac. 0.05 ac. 0.36 ac. _ E' • �_ _� PROPOSED DETENTION POND 'B' A-1 3 A-6r --,; • ' - . Qloo ALLOWABLE = 7.98 cfs 163 a ac` 0.136 Q100 PROPOSED = 5.2 cfs 0-66 ac. 0.03 B-2 OS-AI-2 • A-7 S A-1° 1.62 ac. ( STORAGE REQUIRED = 20,795 C.F. ac. �A-12 ` r 1 1 6-3 100-YR WSE = 751.58 OS-A2- • 0.61 aa. l 1.23 ac. ' OS-A3-2 ,, . 0.33 ac. os-e1-1 RESIDENTIAL LAND USE a5-A3 1 0.54 cc. os-e1-z Tc MIN= 15 MINUTES , �ID OS-A1-3 2.89 ac ' ..„1q 1.06 ac. 0.27 ac. ir a5-A2-2 R � - 2.91 JIOS as-Aa 4.26 ac. i m 0 59 DS=133 �� 0.70 ac. .........................::...' =` d MICHAEL A. THOMAS Length=700' DRAINAGE LEGEND` �� ...9asao ?¢r Avg Slope=0.03 ft/ft /s�9°TF.<IC�r�S°,1��`,�•� V=2.8 fps (Grass) - 3.5 fps (Paved) XX DRAINAGE AREA LABEL 1ItOr"AL 10113/17 Use 4 fps for conservative design x.xx ac. ACREAGE OF AREA Travel Time = 2.9 minutes W, � z...>�r • Jf_ - - � � DRAINAGE DIVIDE REFER TO GENERAL NOTES SHEET FOR "" ' . -a EXISTING UTILITY CAUTIONARY NOTES AND SCALE 1"= 230' DRAINAGE AREA CONTRACTOR ADVISORY 19 0 175 o ---�oEET PROPOSED DRAINAGE AREA SAP EXHIBIT B 41, WJTHOMAS WATER, PAVING , DRAINAGE , & STREET IMPROVEMENTS T O SERVE Fo7R WORTH TX 76107 SUITE,�3 FAX (8174732 98 9 ALTAVISTA BUSINESS PARK REGISTRATION N0.F5435 MJ7 N0.• 678-0G7 PROPOSED DRAINAGE AREA CALCULATIONS Rabonal Method Q=cw AREA ACRES C Tc(min) 11(WW*) 0110e(cls) Comments A-1 2.63 0.84 17 3.10 4.59 7.57 6.8 10.1 16.7 Drains directly to Proposed Detention Pond'A' A-2 0.36 0.84 17 3.10 4.59 7.57 0.9 1 1.4 2.3 Bypasses Proposed Detention Pond'A'and drains to existing detention pond to the north. A-3 0.26 0.84 17 1 3.10 4.59 7.57 0.7 1.0 1.7 Drains to new grate inlet(Inlet 10) A4 0.32 0.84 17 1 3.10 4,59 7.57 0.8 1.2 2.0 Drains to new grate Inlet(Inlet 9) A-5 0,19 0.84 17 3.10 4.59 7.57 0.5 0.7 1.2 Drains to new grate inlet(tniet 8) --A-8 0.86 0.84 17 3.10 4.59 7.57 2.2 3.3 5.5 Drains to new curb inlet(inlet 7) ------ - ----- ------ -- --- -- ---- ----------------- - A-7 0.03 0.84 17 3.10 4.59 7.57 0.1 0.1 0.2 Drains to new trench drain(Inlet 4) A-6 0.10 0.64 17 3.10 4.59 7.57 0.3 0.4 0.6 Drains to new grate inlet(inlet 6) A-9 0.10 0.84 17 3.10 4.59 7.57 0.3 0.4 0.6 Drains to new grate inlet(inlet 3) A•10 0.03 0.84 17 3.10 4.59 7.57 0.1 0.1 0.2 Drains to new trench drain(Inlet 5) A-11 0.21 0,84 17 3.10 4.59 7.57 0.5 0.8 1.3 Drains to new grate Inlet(Inlet 1) A-12 0.51 0.84 17 3.10 4.59 7.57 1.3 2.0 3.2 Chains to new grate inlet(inlet 2) OS-Ai•1 0.05 0.67 17 3.10 4,59 7.57 0.1 0.2 0.3 Offsite Residential development that drains to Proposed Detention Pond A' OS-Al-2 0.66 0.67 17 3.10 4.59 7.57 1.4 2.0 3.3 Offstte Residential development that drains to Proposed Detention Pond A' 08-A1.3 0.27 0.67 17 3.10 4.59 7.57 0.6 0.8 1.4 Otfstle Residential development that drains to Proposed Detention Pond'A' OS-A2-1 1.23 0.88 17 3.10 4.59 7.57 3.4 5.0 8.2 Onsite Industrial development that drains to Proposed Detention Pand'A' OS-A2-2 2.91 0.88 17 3.10 4.59 7.57 7.9 11.8 19.4 Of ne Industrial development that drains to Proposed Detention Pond'A' OS-A3-1 2.89 0.88 17 3.10 4.59 7.57 7.9 11.7 19-3 Offsite Industrial development that drains to Proposed Detention Pond'A' OS-A3-2 0.33 0.88 17 3.10 4.59 7.57 0.9 1.3 2.2� Offsite Industrial development that drains to Basin A-12(Inlet 2) OS-A4 1 4,26 0.67 17 3.10 4.59 7.57 8.8 13.1 21.8 Offsite Residential development that drains to Proposed Detention Pond'A' OS-AS 1.75 0. 17 3.10 4,59 7.57 4.8 7.1 11.7 101fisle Area draining directly to existing detention pond to the north. TOTAL= 50.3 74.5 122..9 O �, ; m ® .' :.:......................°s.:.� ® MICHAEL A. THOMAS j 9 ""'93640" �'".•.�1"',v PROPOSED DRAINAGE AREA ®a 111°<ZOENSE��•°� 20 M1 A P CALCULATIONS e�so SIon7A�EN®®o 10/13/17 EXHIBIT B /t4� �JTHOMAS WATER, PAVING, DRAINAGE , & rel _ STREET IMPROVEMENTS T O SERVE Fort W.WORTH RX 7610 SUITE 103 FAHX- (811717332-9�9 REGISTRATION N0.F-9435 MJT N0.• fi78-001 ALTA VISTA BUSINESS PARK PERVIOUS IMPERVIOUS Gravel 0.30 0.90 0.56 TOTAL AC C B-1 26.130 12,196 0 36.326 0118 0.49 B-2 21,254 58,048 0 79,302 1.82 0.74 B-3 13.708 12.921 0 26.629 0.61 0.59 OS-B1-1 9.998 13,615 0 23.613 0.54 0.65 OS-B1.2 32.214 13.862 0 46.076 1.06 0.48 B-1 0.88 0.49 10 4.06 5.74 1 9.24 1.8 2.5 4.0 Bypasses Proposed Detention Pend'8'and drains to existing ditch in Alta Vista BIW. B-2 1.82 0.74 10 4.06 I 5.74 9.24 5.5 7.7 12.4 Bypasses Proposed Detention Pond'B'and drains to existing ditch in Alta Vista BIW, B•3 0.61 0.59 10 4.06 5.74 9.24 1,5 2.1 3.3 Drains directly to Proposed Detention Pond S' OS-B1.1 0.54 0.65 10 4.06 5.74 9.24 1.4 2.0 3.2 Offsite Industrial development that bypasses Proposed Detention Pond'S' OS-81.2 1.06 0.48 10 4.06 5.74 9.24 2.1 2.9 4.7 Onsite Industrial development that drains to Proposed Detention Pond'B' OS-82 0.59 0.67 10 4.06 5.74 9.24 1.6 2.3 3.7 Offsite Residential development that drains to Proposed Detention Pond'B' OS-B3 J 0.70 0.67 10 4.06 5.74 9.24 1.9 2.7 4.3 Existing ditch tow in Alta Vista BIW TOTAL= 15.7 22.2 35.7 NOTES: 1)Discharge koro drainage areas was obtained using the Rational Method based on current City of Fat Worth Stam Drainage Manual 2)Drainage areas were delineated using storeyed property information and NCTCOG aerial images and centaurs. 3)Run-off coefficients for drainage areas were based on their designated land use runoff coefficients. 4)Residential areas designated as'A-5'and right-of-way recehed a'C'factor of 0.67 5)Neighborhood Commercial areas designated as'E'and industrial areas designated as T received a'C'factor of0.88 6)The time otconcentration of 17 minutes was used for the overall drainage basin to Detention Pond A. 0• T d K NOTE** _��:••"'....... 8 THE REQUIRED STORAGE AND OUTFALL FOR DETENTION POND 'A' WAS CALCULATED USING THE MAXIMUM . ALLOWABLE DISCHARGE WITH NO BACKWATER EFFECT. THIS WILL ENSURE WHEN DOWNSTREAM IMPROVEMENTS .:......................t.. of. .i j ARE MADE AND WATER IS NO LONGER BACKING UP ONTO THE SITE, THE DETENTION POND WILL NOT MICHAEL A. THOMAS /,„........................„• DISCHARGE MORE THAN EXISTING CONDITIONS. 93640 '2r DUE TO THE DOWNSTREAM POND OUTFALL BEING INADEQUATE, THE POND CREATES A BACKWATER EFFECT THAT Sea cS�..ENS w� �� BUILDS UP TO AN ELEVATION OF 743.50 IN THE 100-YR STORM. THE STORAGE VOLUME OF DETENTION POND �S�,tONAL 10113117 'A' WAS CHECKED USING 743.50 AS THE FLOOR ELEVATION. THE PROPOSED POND FILLS UP TO A 100-YR WSE OF 746.29 IN THE 100-YR STORM. TOP OF BERM IS AT ELEVATION 748.50 SO DETENTION POND 'A' HAS ADEQUATE STORAGE. PROPOSED DRAINAGE AREA P1 MAP CALCULATIONS CONT. EXHIBIT B - POND A Grp �LJTHomAs WATER, PAVING , DRAINAGE, & - STREET IMPROVEMENTS TO SERVE F3973*ORT WORHERX 76107' FAX 10 FAX- 817!17329841 REGISTRATION NO.F-9435 MJT NO.- 679-DOi ALTA VISTA BUSINESS PARK Detention Pond A Stage-Storage-Discharge Data (Analyzed with No Backwater Effect) Primary Outlet Stage Elevation Contour Inc. Total Stage 1 Stage 2 total Usch3rge Area Storage Storage Weir Orifice Weir Orifice H a H Q H Q H Q (ft) (ft) (so (0 (co (ft) (cfs) (ft) (cfs) (ft) (cfs) (ft) (cfs) (cfs) 0.00 742.42 0 0 0 0.00 0.0 0.00 0.0 0.0 0.58 743.00 12,292 3,565 3,565 0.00 0.0 0.00 0.0 0.0 1.49 743.91 12,390 11,230 14,795 0,49 36.0 0.00 0.0 36.0 1.58 744.00 14,804 1,224 16,019 0.58 39.2 0.00 0.0 39.2 212 744.54 18,744 9,058 25,077 1.12 54.4 - 0.00 0.0 54.4 2.58 745.00 22,227 9,423 34.500 1.58 64.6 0.00 0.0 64.6 3.19 745.61 25,094 14,433 48,933 2.19 76.1 0.44 14.9 90.9 3.58 746A0 27,060 10.170 59.103 2.58 82.6 0.83 20.4 103.0 4.58 747.00 45,348 36,204 95,307 3.58 97.3 - - 1.83 30.3 127.6 5.58 748.00 1 56,389 50.869 146,175 4.58 110.0 2.83 37,7 147.7 t 4� 0 F s�f• DETENTION POND 'A' ................ .:.....MA7* MICHAEL A.•TH.... HYDRAULIC ;�9 F <zc�wE°� `� CALCULATIONS 4 EXHIBIT B - POND A *4 0 JTHOMAS WATER, PAVING, DRAINAGE, & STREET IMPROVEMENTS T O SERVE FOR WORTH,TX 76107 SUITE 103 FAAXX- (8817}7324)634; REGISTRATION N0.F-9435 NUT N0.- ) 67B-001 ALTA VISTA BUSINESS PARK Downstream Pond Stage-Storage-Discharge Data Primary Outlet Stage Elevation Contour Inc. Total Stage 1 Stage 2 Total Discharge Area Storage Storage Weir Orifice Weir Orifice HQ H p H p H p (ft) (ft) sf) (0 (Cf) (ft) (cis) (ft) (cfs) (ft) (cfs) (ft) Ids) (cfs) 0,00 741.38 0 0 0 0.00 0.0 0.0 0.62 742.00 3,258 1.010 1,010 0.00 0.0 0.0 1.62 743.00 4.952 4,105 5,115 1.00 6.1 - - 6,1 2.07 743.46 9,678 3,292 8,407 1.45 7.3 0,20 7.1 14.4 2.62 744.00 15.800 7,006 15,413 2.00 8.6 0,75 1 51.2 1 59.9 3.62 745.00 39,217 27,509 42,922 3.00 10.6 1.75 182.7 - 193.2 4.62 1 746.00 1 45,315 42,266 85,188 4.00 1 12.2 2.75 359.8 3720 o DETENTION POND ' A ' .. �..MICHAEL••Fl,••T..... 9A••-••93640 •'�� HYDRAULIC s►a�Fssj: NSNs - \\\\\\ 10/13/17 CALCULATIONS 5 2E EXHIBIT B - POND A 4,14 �JTHOMAS WATER, PAVING, DRAINAGE, & lei=:f STREETIMPROVEMENTS TO SERVE F3973 W.VICKERY ORT WORTH,7X 76107 SUITE 103 PHONE• 732-98399&4 REGISTRATION N0.F•9435 MJT N0.-o, 878-001 ALTA VISTA BUSINESS PARK Detention Pond A Stage-Storage-Discharge Data (Analyzed with Backwater from Downstream Pond) Primary Outlet Stage Elevation Contour Inc. Total Stage 1 Stage 2 Total Discharge Area Storage Storage Weir Orifice Weir Orifice H Q H Q H Q H Q (ft) (ft) (0 (CO (CO (ft) (cfs) (ft) (cfs) (ft) (cfs) (ft) (cfs) (cfs) 0.00 743.45 0 0 0 0.00 0.0 0.00 0.0 0.0 0.55 744.00 14.804 4.071 4,071 0.07 6.4 0.00 0.0 6.4 1.55 745.00 22.227 18,516 22,587 1.07 25.7 0.00 0.0 25.7 2.55 746.00 27.060 24,644 47,230 2.07 35.8 0.83 20.4 56.2 2.61 746.06 28,029 1.653 48,883 2.13 36.3 0.89 211 57.5 3.55 747.00 45.348 34,487 83,370 3.07 43.7 1.83 30.3 73.9 4.55 748.00 56,389 50,869 134.238 4.07 50.3 2.83 37.7 879 �F r DETENTION POND 'A' MI( ....L ..... i 9364." HYDRAULIC X0/13/17 CALCULATIONS 6 27 EXHIBIT B - POND A 0�JTHOMAS WATER, PAVING, DRAINAGE, & FOR WY BLVD.,SUITE 103 PHONE-(817)732-9839 STREET IMPROVEMENTS TO SERVE FORT WORTH, TX 76107 FAX- (817)732-9841 ALTA VISTA BUSINESS PARK REGISTRATION N0.F-9435 MJT NO.- 678-D01 NOTE THE REQUIRED STORAGE AND OUTFALL FOR DETENTION POND 'A' WAS CALCULATED USING THE MAXIMUM ALLOWABLE DISCHARGE WITH NO BACKWATER EFFECT. DUE TO THE DOWNSTREAM POND OUTFALL BEING INADEQUATE, THE POND CREATES A BACKWATER EFFECT """""""" THAT BUILDS UP TO AN ELEVATION OF 743.45 IN THE s...:......................... P ? � 100-YR STORM. THE STORAGE VOLUME OF DETENTION POND 'A' WAS THEN CHECKED USING 743.45 AS THE le j; BL�`� 10/13/17 TO AR 100 ELEVATION I WSE OF 745.61 PROPOSED THDE 100DYRILLS UP STORM. rtee DETENTION POND 'A ' CALCULATIONS W ROENDETO RND MIN D, THEOISCHPONDS DWHERONCE THE ERGE HYDRAULIC MODELED IN A POND ROUTING SOFTWARE TO CHECK THE DESIGN. EACH POND WAS DETERMINED TO BE MORE THAN ADEQUATE WHEN COMPARED TO THE POND CA LC U LAT I 0 N S 7 SOFTWARE. THE HYDROGRAPHS ARE PROVIDED BELOW. 28 EXHIBIT B - POND A WOTHoMAS WATER , PAVING , - u ' 0SUE 103 PHONE-(Bil 732.9839 FCFTJvR'H,TX76107 FAX- (1)732-984DRAINAGE LSTREET RL.IaTR,,TFON NO.---9435 WT NO,- 678-0011 HYdrograph type = Reservoir Peak discharge = 4.461 cisIMPROVEMENTS TO Storm frequency = 100 yrs Time to peak = 17 min Time interval = 1 min Hyd.volume = 8,515 cult I S T A Inflow hyd.No. = 7-0S-A5-Copy Max.Elevation = 743.15 ft VISTA SERVE ALTA N Reservoir name = Downstream Pond Max.Storage = 6,212 tuft BUSINESS PARK - Downstream Routing Nyd.No.8••100 Year Q{cis) 15.00 16.00 .......................t.:.Y �t 93640 .•�ct_� 12.00 12.00 I0/13/I7 e.00 9.00 6.00 6.00 DETENTION POND 'A' 3.00 3.00 HYDRAULIC CALCULATIONS 8 °� `� 0 1D 20 30 4D 50 60 70 80 90 100 110 120 L _ _. . - Time(min) EXHIBIT B - POND BMJTHoMAS WATER, PAVING , DRAINAGE & STREET 3973 W.VICKERY BLVD.,SUITE 103 PHONE-(817)732-9839 7 FORT WORTH,TX 76107 FAX- (817)732.9B41 REGISTRATION NO.F-9435 MJ7 N0.- 67&001 IMPROVEMENTS TO SERVE Hydrograph type = Reservoir Peak discharge = 1.787 cfs Storm frequency - 1 yrs Time to peak = 44 min ALTA VISTA BUSINESS Time interval = 1 min Hyd.volume = 7,698 cult Inflow hyd.No. = 2-PR STORM-BASIN A Max.Elevation = 748.17 ft PARKReservoir name = Detention Pond B Max,Storage - 3,957 cult Storage MI-Im method used Pond B Routine (09) Hyd.No.3--1 Year a(CIS) 4.00 4.00 d t l + .........................:'y 3.00 3.00 MICHAEL A. THOMAS.. 93640 Q �B�i FS to..NsoG� F S 10/11"11 2.00 2.00 DETENTION POND ' B 1. 0 11.00 HYDRAUL9C CALCULATIONS 1 °°° °°° 0 10 20 30 40 50 60 70 80 40 100 110 120 130 140 150 30 —Hyd No.3 —Hyd No 2 !-ILI It Cl Total storage used=3,457 cult Time(min) EXHIBIT B - POND B 0�lJT_HOMAS WATER, PAVING, DRAINAGE, & STREET IMPROVEMENTS 3873 W.VICKERY BLVD.,SUITE 103 PHONE-i817 732-9639 FORT WORTH,TX 76107 FAX, (817(1 732.8641 REGISTRATION NO.F-9435 MJT NO.- 678-001 TO SERVE ALTA VISTA Hydrograph type = Reservoir Peak discharge = 2.176 cfs Storm frequency = 5 yrs Time to peak = 61 min Time interval = 1 min Hyd.volume = 13,747 cuft BUSINESS PARK Inflow hyd.No. = 2-PR STORM-BASIN A Max.Elevation = 749.17 ft Reservoir name = Detention Pond B Max.Storage = 7,544 cuff Storage lndiWion method used. Pond B Routing Q(Cls) Hyd.No,3 5 Year Q(Cts) 5.00 5.00 4.00 4.00 MICHAEL•ATHOMAS 3.00 3.00 • ' vq; 93640 10/13f17 2.002,DO DETENTION POND ' B ' 1.001.00 HYDRAULIC CALCULATIONS 2 °� 0 10 20 30 40 50 80 70 80 9D 100 110 120 130 14D 150 31 -Hyd No.3 -Hyd No.2 )I111,_1 Total storage used=7,544 curt Time(min) EXHIBIT B - POND B �LJTHOMAS WATER, PAVING, DRAINAGE & STREET 3973 W.VICKERY BLVD.,SUITE 103 RbONE-(817)732.9839 FORT WORTH,TX 76107 FAY..- (817)732-9841 REGISTRATION NO.F-9435 MJT NO.- 678401 IMPROVEMENTS TO Hydrograph type = Reservoir Peak discharge = 4.208 cfs Storm frequency = 100 yrs Time to peak = 65 min Time interval = 1 min Hyd.volume = 24,964 cuft SERVE ALTA VISTA Inflow hyd.No. = 2-PR STORM-BASIN A Max.Elevation = 750.58 ft BUSINESS PARK Reservoir name = Detention Pond B Max.Storage = 14,452 cuft Storage 1"Ic.im method used. Pond B Routing CI(cf$) Q(�) �.No.3—104 Year 8.00 8.00 �¢� fy.......T 1. 6.00 6.00 ..s..., �aMICHAE��A. THI]MAS�j 93640 II�ll�e�lale�'e�` 10/13/I7 AIM 4.00 DETENTION POND ' B ' Z00 2.00 HYDRAULIC CALCULATIONS 3 °� �� 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 Tine(mm) —Hyd Na 3 --Hyd No,2 �1 iI It Total storage used=14,A52 tuft EXHIBIT B - POND B 4r4 01V JTHoMAS WATER, PAVING, DRAINAGE, & STREET IMPROVEMENTS TO SERVE 4 ;;, Y, �g6107.5U�E,a3 PHONE AX NE-(B,7' 2 g ALTAVISTA BUSINESS PARK REGI T:� -0.F-W5 MJTNO.- 67&001 X2' V-5624 GRATE INLET=751.58 '_100 YR WSE = 751.58 �1, B 4 CF r�, r d� S............................5...� MTC'HAE� A. 1'HCMAS j .¢� STAGE 2 ORIFICE �5 YR WSE = 749.96 ELEVATION = 749.54 5"1 'K7 1 YR WSE = 748.94 STAGE 1 ORIFICE ELEVATION = 745.86 8" STORM SEWER PIPE 4 18" FL = 745.86 6" OUTFALL STRUCTURE-SIDE VIEW DETENTION POND ' B ' HYDRAULIC CALCULATIONS 4 33 EXHIBIT B - POND B 0VuJTHOMAS WATER , PAVING, DRAINAGE, & STREET IMPROVEMENTS TO SERVE 3973 W.VICKEYFORT WORTH, X876107 SUITE 103 F X- -(881�17M-98�39 ALTAVISTA BUSINESS PARK REGISTRATION N0.F-9435 MJT N0.- 678-001 100 YR WSE = 751.58 10" 5 YR WSE = 749.96 STAGE 2 ORIFICE ELEVATION = 74 .545„ 1 R WSE = 748.94 STAGE 1 ORIFIC ELEVATION = 745.86 18" STORM SEWER PIPE 6" 18" FL - 7 5.86 � MIL"HAEL......TH�MAS j OUTFALL STRUCTURE - FRONT VIEW ;:, DETENTION POND ' B ' 10/13/17 HYDRAULIC CALCULATIONS 5 34 EXHIBIT B im; WJTHOMAS WATER, PAVING, DRAINAGE, & oR HE,TXBLVD.,SUITE -- F NE-j19 ;87,;�STREET IMPROVEMENTS T0 SERVE FORT ALTAVISTA BUSINESS PARK REGISTRATION NO.F•9435 MUT NO,- 678-001 TOP OF BANK = 752.58 EMERGENCY SPILLWAY <�——_1 D YR WSE= 752 DB_ — �' I-III-III-1��-_ AF _"-III=I -III—III- 4• v0e� EMERGENCY SPILLWAY ANALYSIS: SPILLWAY ELEVATIJ— WEIR TYPE: BROAD CRESTED III- -I1-1! —III= L=13.5' = 751.58 III Q=CLH'/' I —I (—III—III-III—III- I WEIR COEFFICIENT =3.087 IIIIIIIIIIIIIIIIIIII1=1I�I -IiN-� IFl�d �I�IIIII�III HEADLENGTH 05' I—III—I I I—IIi°—I I I—_ III— III—III Q,� = 14.7 CFS I=Ill-III=III=�I I �=III—III= — I I III=III=IIS=III= -III=I I=III-7111— EMERGENCY IIEMERGENCY SPILLWAY DETAIL POND B N.T.S. t :^ DETENTION POND ' B ' _. ` A,THDMAS.� 9, �,Fc .ate HYDRAULIC ��f� Sn 10/13/17 CALCULATIONS 6 "`�� 35 EXHIBIT B - POND B WJTHomAs WATER, PAVING, DRAINAGE , & k-LC!ilw a ww STREET IMPROVEMENTS T O SERVE FORTWORTH,TX 76107 76BLVD.,SUITE 103 PHONE•�8817)732-98393 ALTA VISTA BUSINESS PARK REGISTRATION NO.F•9435 MJ7 N0.- 678001 SP1Ll W A 751.58 10,o 100YR WSE= \ O� OUTFALL STRUCTURE: 2'X2' GRATE INLET, FRAME BOX CAST IN PLACE W/ FRAME.do ` J I TG=751.58 TE I FL 18"=745.86 �\ CONSTRUCT WIDE INLET \ i NGS CONSTR TED INTEGRA Y W LET BOX & ONCRETE BOTT #4 BARS 12" �' •.al CENTER do IB" TO LL 1 CONTINUO AROUND PE ETER. MATCH SLO OF EMBANK T _ J ,O.O I\>A- 0 p46 AO'1'p O OF DETENTION POND B �.":....AEL*".."....Tf:.,":...� ... ....... :. .. HYDRAULIC � . .. ... CALCULATIONS 3 oaq®1 ®®® 10113117 36 EXHIBIT B - POND B 4- �JTHOMAS WATER, PAVING, DRAINAGE, (Sc STREET IMPROVEMENTS T O SERVE 3973W,VICKERY BLVD.,SUITE �OF-.E1 , 3 3E39 FORT WORTH,TX 76107 'AX- I- 9cS1 ALTA VISTA BUSINESS PARK REGISTRATION NO.F-9435 VJ7 N0 Stag eStorage-Discharge Data - Primary Outlet Stage Elevation Contour Inc. Total Stage 1 Stage 2 Total Discharge Area Storage Storage Weir Orifice Weir Orifice H Q H Q H Q H Q (ft) (ft) (so (cf) (cf) (ft) (cfs) (ft) (cfs) (ft) (cfs) (ft) (cfs) (cfs) 0.00 745.86 0 0 0 - - 0.14 746.00 39 3 3 - - - 1.14 747.00 2,127 1.083 1,086 - 0.89 1,2 1.2 2.14 748.00 2.979 2,553 3,639 1.89 1,7 1.7 3.08 748.94 3,856 3,212 6,851 - 2.83 2.1 - 2.1 3.14 749.00 3,912 233 7,084 2.89 2.1 2.1 4.10 749.96 4,923 4,241 11,325 3.85 2.4 021 0.8 3.2 4.14 750.00 4.965 198 11,523 3.89 2.5 0,25 0.9 3.3 5.14 751.00 6,137 5,551 17.074 4.89 2.8 1.25 1.9 4.7 5.72 751.58 6,884 3,776 20,850 5.47 2.9 1.83 2.3 5,2 L76.14 752.00 7,425 3,005 23.855 5.89 3.0 2.25 2.6 5.6 14 753.00 8.830 1 8.128 31.982 6.89 3.3 3.25 3.1 6.4 .r 1P � M � �L DETENTION POND 7B AE �J�M�P. . . �.. HYDRAULIC .<z� NSQ�-�� CALCULATIONS �� SSF°""��N`'' EXHIBIT B - POND B 41-7 WJTHOMAS , WATER, PAVING, DRAINAGE, & STREET IMPROVEMENTS TO SERVE 3973 W. FAX- L=732-9�; REGISTRATION Nt. NA,I'"'N0.- 67&-001 ALTA VISTA BUSINESS PARK Detention Pond B Storage Volume Calculations Upre=60[CAa-(2CabAQa)112+(Qa/2)(b-T,,)) Uma'=Up1e*(P180/Ptd) Area T Design I Qandaabie Td Upre P1e0 lid Ptd umaK Area Ca?(Ombie a b (ac) (min) Storm (in/hr) (cfs) (min) (ft3) (in) (inlhr) (in) (0) B thru OS-83 6.40 0.60 15 1 3.32 2.2 95.835 13.425 33.2 4,385 1.77 2.06 1.14 6,829 B thru OS-133 6.40 0.60 15 5 4.86 3.2 170.81 19.435 42.4 7.430 2.95 2.75 1.94 11,296 B thru OS-B3 6.40 0.60 15 100 7.98 5.2 322.07 24 388 50.0 13.716 5.44 4.30 3.59 20,795 Sharp Crested Stage 1 -Orifice Stage 2-Orifice Weir Parameters Orifice Parameters Orifice Parameters SuppressiCoefficient Number o Coefficient Crest Length ons Coefficient Rise(in) Span Number of Rise(in) Span Discharge Orifices Discharge Orifices 3.33 1.90 2 0.62 6 6 1 0.62 5 10 1 ........... l.:........ t t.� DETENTION POND B ' ....... f MICHAEL A. THOMAS j .....93640......� HYDRAULIC 01 M`cssa 1°`z3`1' CALCULATIONS 6 EXHIBIT B - POND B WOTHOMAS WATER, PAVING, DRAINAGE, & STREET IMPROVEMENTS TO SERVE ALTA VISTA BUSINESS PARK KERY BLVD.SUITE 103 PHONE•(817 732-9839 VORTH,TX 76107 FAX- (81}732-9841 ISTRATION N0.F-9435 MJT N0.- 678-001 -N STA. 1+42.42 - PUBLIC ST LINE 'B1' NEW PUBLIC 12" WL CROSSING I o 12" WL T/P=743.22co a n 24" FL=745.28 Q o STA. 1+87.77 - PUBLIC ST LINE 'B1' N=7023110.8577 g E-2342674.1928 FURNISH & INSTALL/CONSTRUCT: N u- ,, 1-3'X3' DROP INLET W/ 1 SIDED OPENING. STA. 1+24.42 - PUBLIC ST LINE 'B1' THROAT=748.48 NEW PUBLIC 8" SANITARY a 24" FL=745.51 SEWER PIPE CROSSING 3H d - N=7023065.5134 8" SS FL=736.78 ». E=2342674.3051 24" FL=745.19 3H N=7023128.8592 FURNISH AND INSTALL 46.28 L.F. OF 18" DIA. CL III, C-76 RCP STORM SEWER PIPE E=2342674.1482 AT 0.76% INCLUDING EXCAVATION, EMBEDMENT, AND BACKFILL COMPLETE IN PLACE. STA. 0+86.41 - PUBLIC ST LINE 'B1' _ CONSTRUCT: - 1-SET(1)(FW) HEADWALL AS DETAILED 5 746 STA. 2+23.23 - PRIVATE ST LINE 'B1' 24 FL-745.00 -_ r_ -1 Pu L'( _ FURNISH & INSTATLL/CONSTRUCT: " 47 v� � - - N=7023166.8736E'B1' 1-18" DIA. 45' HORIZONTAL BEND E=2342674.0139 - ILLI 24" FL=745.78 1 1 W N=7023040.3059 FURNISH AND INSTALL 101.36 L.F. OF 24„ DIA. E=2342649.3690 I ^- v CL IV, C-76 RCP STORM SEWER PIPE AT 0.50% INCLUDING EXCAVATION, EMBEDMENT, AND BACKFILL. - COMPLETE IN PLACE. - STA. 2+34.04 - PRIVATE ST LINE 'B1' CONSTRUCT: I- 1-OUTFALL STRUCTURE W/ 2'X2' PUBLIC STORM SEWER � r'�e " * 3 GRATE INLET AS DETAILED ON SHEET 13 �:.:........:.. ::.:.A 24" FL=745.86 ......... 1 A. TNC r N=7023040.2474 TF I LINE B 1 PLAN & �w �•�.�.�. ...... ..� N E=2342638.5509 -5 93640 rq® <j FN5G0 -;vim PROFILE 10113117 oFEET _ 3 9 EXHIBIT B — POND B �JTHoMAS WATER, PAVING , DRAINAGE , 8c STREET IMPROVEMENTS TO SERVE F3973 W.ORT WORTH,RX 761007 SUITE 103 PHONE- (8177)732-9839 732-9841 REGISTRATION NO.F-9435 MJT NO.- 678-001 ALTA VISTA BUSINESS PARK 760 760 vooesND-TA11 16.26 Lf.Of ta`INA, 75Z"0-m STA. 1+01.36 - ST LINE 'B1' MCLDONG E%CAVAMR,ENaEd", AND WKILL G°�"r`" P"" DROP INLET CAPACITY: ...... ,.,`.HYDRA"MADE UNE .:... ..,. _ ,° 1a'rtco 07615 ..- ANO RSTAIJ 101.36 Lf.OF Y10G0- 9111p. � 3/2 DPL,CL W.G- K?AT .arta n/n Q/P=3.OY EECAYA ELIBCDNENT, EXISTING _ - 3/2 D IUCNPILL CON E N PLACE. A7 CENTERLINE ,,. �� Q/3=3.0(1.07) 750 r«NEEAU oP sroRiT T66 rti tor*au"-•,- 750 Qar=9.96 CFS _ Qmrat=3.7 CFS r , .V161.1t0 Ir - 9flTAM.ODIA H(N M 740 m _ p - 5 740 wi a �a 730 F �« ._.I 730 0+00 7+00 2+00 \ �•MICHAEL A..THOMAS�� 93640 4Z- E j ' B ' f++'`�\\\\\\��!~ PUBLIC STORM SEWER LINE 1 10/13/17 PLAN & PROFILE - STA 0 + 00 - 1 + 47 . 64 40 EXHIBIT B - POND B � ;, WJTHOMAS WATER, PAVING, DRAINAGE, & STREET IMPROVEMENTS TO SERVE F3973 W.VICKERY ORT WORTH,TX 66107 SURE iD3 FAAXX- -111117-121831 817)j_aU39 REGISTRATION N0.F-9435 MJT N0.- 67&-001 ALTA VISTA BUSINESS PARK STORM SEWER PLAN NOTES: CONSTRUCTION1. ALL METHODS AND MATERIAL SHALL CONFORM TO THE PROJECT SPECIFICATIONS. IN AREAS WHERE PROJECT SPECIFICATIONS DO NOT COVER, THE STANDARD SPECIFICATIONS FOR PUBLIC WORKS CONSTRUCTION AS PUBLISHED BY THE NORTH CENTRAL TEXAS COUNCIL OF GOVERNMENTS (NCTCOG) LATEST EDITION SHALL APPLY. 2. ALL WATER LINES WILL BE LAID A MINIMUM OF 48" BELOW FINISHED GRADE EXCEPT AS SHOWN ON UTILITY CROSSING SHEETS. 3. ALL WATER LINE FITTINGS TO BE DUCTILE IRON MECHANICAL JOINT W/ MEGA LUGS. THE BID ITEM FOR D.I.M.J. FITTINGS WILL INCLUDE ALL NECESSARY BLOCKING. 4. UNCHARTED UTILITY LINES MAY BE LOCATED WITHIN THE AREA OF DEMOLITION. THE CONTRACTOR SHALL BE SOLELY RESPONSIBLE FOR LOCATING ALL EXISTING UTILITIES AND IDENTIFYING ANY POTENTIAL CONFLICTS 5. WHERE REINFORCING IS NOT SPECIFICALLY DETAILED, REINFORCING FOR PAVING SHALL BE AT A MINIMUM, NO. 4 REBARS AT 12" O.C.E.W. 6. UNLESS SPECIFICALLY NOTED ON PLANS, ALL CONCRETE PAVING, SIDEWALKS, SLABS AND MISCELLANEOUS UTILITY INFRASTRUCTURES SHALL BE AT A MINIMUM, 4,000 PSI PORTLAND CEMENT CONCRETE AT 28 DAYS. 7. ALL AREAS OF THE SITE INCLUDING ANY OFF-SITE AREA THAT IS DISTURBED BY CONSTRUCTION ACTIVITIES, SHALL RECEIVE AT A MINIMUM, HYDROMULCH AND 6" OF TOP-SOIL. REFER TO LANDSCAPE, DEMOLITION, GRADING,PAVING, DRAINAGE, WATER, SEWER, IRRIGATION ANDlo _� Q•..••••••.r r* ��•� SEDIMENT CONTROL PLANS TO DETERMINE ALL LIMITS OF *w s *�' �* j • DISTURBANCE. CONTRACTOR SHALL PROVIDE SOD AS .........................._•••Z REQUIRED ELSEWHERE IN THE PLANS. �..`' rHAR A THOMAS ............................ REFER TO GENERAL NOTES SHEET FOR EXISTING UTILITY 1� °9 93640 Qe CAUTIONARY NOTES AND CONTRACTOR ADVISORY 111% ,�cN s'`�` PUBLIC STORM SEWER LINE B1 ON 110/13/17 PLAN & PROFILE - STA 0 + 00 - 1 + 47 . 64 41 STORMWATER FACILITY MAINTENANCE AGREEMENT 15 Rev.11/17/2016 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 16 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 cli in s 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 ward Location of Erosion MAJOR INSPECTIONS Condition of Stormwater Quality Structure Type of Stormwater Quality Structure Structure type and Condition Condition of Rip- Ra STORMWATER FACILITY MAINTENANCE AGREEMENT 17 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 18 Rev.11/17/2016 Fo r ! INSPECTION CHECKLIST FOR S1t4lPtE DETENTION BASIN Facility Name: Facility Agreement Number: Basin/gond Number; lnspecreai fly,. Daie: Type of lnsWtlion:Annual 0uanerly W.nthly_,Roldme_or Storm Event_(#days since event Basin Conditions: I. is ttrere standing water or wet spots? Yee No_Canmdrts 2. Does sides or bottom draw signs of erosion,settlinq cracking,etc? Yea No_Comments 3. Do---dam or e rnergency spdway show awns oferosiw,seta ing, cracking,or oto proUerrns" Yes_No_Cormnerts 4. Is there evidence of animal bunuwIng it dam? Yes,No_Comments 5_ Is there evidence of changes in skrepG ar volume of basin I Yee No_Cnnrrrrnt3 6 Do vegetated areas need mowing? Yes No_Consent 7. Are there trees or woody growth in darn? Yes_,Nn_Camtiahts Am 8. Atlhere areas that need to be re-vegetated? Yes N!o_Conrrhents 9. Is there any accumulation of 94 trash,debris or litter in the basin? Yes_No_Comments 10.Ate Owe arty alto basin maintenance activities needed? Yes—No Comments Structural Components: I. Are pipes,channels,trash racks,etc.free of obstructions') Yes—No_Comments 2. Are pipes,sp*smyr or trash racks in need of repair? Yes_No_Comments 3, Is the low flaw or WOW channel in need of repair? Yes____No_Convnenta 4. Is the outtall channel in rued of repair? Yea—No_Comments 5. Arra there arty other sttvaural maintenance activities needed? Yes—No_Comments Plan for correcting deficiencies: Signature: Ow rWs Representative Date: Form CFW-6 CFw WMivk5 Appb-4xA ti STORMWATER FACILITY MAINTENANCE AGREEMENT 19 Rev.11/17/2016