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Contract 48901
EECENEO CITY SECRETARY CONTRACT NO, CITYSECR>:T O TH CI STORMWATER FACILITY MAINTENANCE AGREEMENT WATER QUALITY DEVICES THIS AGREEMENT, made and entered into this day of , 2017, by and between FW Waterside Land, LLC, acting by and through Fremon Baker, 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 18.276 acre tract located in the EVAN H. BURKE Survey, Abstract 160, and the JAMES ROGERS Survey, Abstract 1265, Tarrant County, Texas according to the deed recorded in Volume 388-132, Page 49, 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 WATERSIDE 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 and its runoff quality within the confines of the Property; and WHEREAS, this Agreement shall run with the land and apply to the Landowner, its successors and assigns. The term "Landowner" shall refer to the then-current legal owner of the Property and/or the Facility as same are herein defined; and WHEREAS, the Landowner has determined that on-site Stormwater Management Facilities to control sediment, nutrients, trash, debris and other floatable materials ("Facility") should be constructed and maintained on a portion of the Property; and LOFFICIALonARYSTORMWATER FACILITY MAINTENANCE AGREEMENT T 1 Rev.12/29/2014 WHEREAS, the City requires that the Facility, whether one or more, as shown on the Plan be constructed and adequately maintained by the Landowner the locations of which are as shown in the attached Exhibit "A" ("Facility Property"); 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 shall adequately construct and maintain the Facility at no expense to the City of Fort Worth in accordance with the design specifications for the Facility, attached as Exhibit `B", and the current standards then in force and effect in the City of Fort Worth and with the Operations and Maintenance Plan attached to this Agreement as Exhibit "C". The Facility includes all structures required to control the quality of the storm water. Adequate maintenance is herein defined as good working condition so that these facilities are performing their designed functions. Maintenance forms provided by the City, or an equivalent provided by the manufacturer of the Facility, attached to this Agreement as Exhibit "D", are to be used to establish what good working condition is acceptable to the City. 2. If the Landowner contracts the maintenance of the Facility with a third-party, Landowner shall provide a copy of the contract to the City at the time this Agreement is executed It shall be the Landowner's responsibility to ensure that the contracting party is properly qualified to maintain the Facility and to provide any updates to the contract as a part of the annual inspection report discussed immediately below.. 3. The Landowner shall inspect or shall cause to be inspected the Facility at frequency specified by the manufacturer or annually, if not specified by the manufacturer, using the inspection form in Exhibit C or equivalent by manufacturer, and shall be compiled and submitted 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. Components of the STORMWATER FACILITY MAINTENANCE AGREEMENT .Z Rev.12/29/2014 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. The corrections identified in the inspection report must be corrected within 45 days, and corrections once made shall be so noted in the next inspection form 4. The Landowner hereby grants permission to the City, its authorized agents and employees, to enter upon the Property to inspect the Facility whenever the City deems necessary. The inspection may involve follow-up on reported deficiencies and/or to respond to citizen complaints. The City shall provide the Landowner copies of the inspection findings and a directive to commence with maintenance and repairs if necessary. 5. In the event the Landowner fails to maintain the Facility 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 to protect public health, safety and welfare and to charge the costs of such maintenance and repairs to the Landowner. It is expressly understood and agreed that the City is under no obligation to routinely maintain or repair the Facility, and in no event shall this Agreement be construed to impose any such obligation on the City, such obligation is the Landowner's. 6. The Landowner 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 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 fails 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 the county in which the Facility lies, an affidavit identifying STORMWATER FACILITY MAINTENANCE AGREEMENT 3 Rev.12/29/2014 the real property to be charged with such lien, stating the amount thereof, and making reference to this Agreement. 7. 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 COVENANTS AND AGREES AND DOES HEREBY INDEMNIFY, HOLD HARMLESS AND DEFEND THE CITY OF FORT WORTH, ITS AGENTS, SERVANTS AND EMPLOYEES FROM AND AGAINST ALL COSTS, EXPENSES, LOSSES, DAMAGES, CLAIMS OR CAUSES OF ACTION WHATSOEVER ARISING, OR WHICH MIGHT ARISE, FROM THE FAILURE OF LANDOWNER TO: PROPERLY INSTALL, MAINTAIN AND REPAIR THE FACILITY, OR ANY DAMAGES CAUSED TO PERSON OR PROPERTY DUE TO (1) FLOODING ATTRIBUTED TO THE FACILITY OR (2) IMPROPER INSTALLATION, MAINTENANCE AND REPAIR OF THE FACILITY, . 8. 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 access to the Facility. 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.12/29/2014 Executed this Okay of M" 20/1 Landowner FW WATERSIDE LAND LLC, a Delaware limited liability company By: FW Waterside Partners LLC, a Delaware limited liability company, its sole member By: Trademark Waterside, L.P., a Texas limited partnership, its Managing Member By: TW Genpar, LLC, a Texas limited liability company, its general partner By: Name: Fremon Baker Title: Senior Vice President City of Fort Worth Jesus J. Chapa Assistant City Manager Approved as to Form and Legality Assistant Ci y'X orn F F SRT ATT-PST CFFICIALC®R® 6t.1.(r ` CITU SECRETARY MfA; City Secretary CA FT. ®gam � Hs' 77C STORMWATER FACILITY MAINTENANCE AGREEMENT 5 Rev.12/29/2014 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. D.J.Harrell Development Servi es Administrator Date:--041 Z / STATE OF TEXAS § COUNTY OF TARRANT § This instrument was acknowledged before me on L o- by Jesus J. Chapa, Assistant City Manager of the City of Fort Worth on behalf othneCi of Fort Worth. klo MARIA S SANCHEZ {{{///////// My Commission Expires December 19, 2017 ( ANoy Public, State of Texas ��e Sr��F O!tt STATE OF TEXAS § COUNTY OF TARRANT § Before me, the undersigned authority on this day of `k ✓ I )a:Kw 20 personally appeared � m on ' r known to me to be the person whose name is subscribed to the foregoing instrument and acknowled ed to me that the same is the act of `�v r FW L"O, LLC , and that he executed the same as its S V and as the act of such a1 and for the purposes and consideration expressed in the foregoing instrument. ; �pMNp otary ublic, tate of Texas KIMBERLY 1. SYKORA Notary Public,State of Texas =P;• My Commission Expires April 23, 2011 OFFICIAL RECORD C1�8RCReARY FT. WORTH, 77 STORMWATER FACILITY MAINTENANCE AGREEMENT 6 Rev.12/29/2014 LEGAL DESCRIPTION PART 1 BEING a tract of land situated in the JAMES ROGERS SURVEY, Abstract Number 1265 and the EVEN H. BURKE SURVEY, Abstract Number 160, City of Fort Worth,Tarrant County, Texas;embracing a portion of Phase 3,Tract 2 being a 18.276 acre tract of land described in the deed to FW Waterside Land LLC as described in County Clerk Document Number D214224895 of the Official Public Records of Tarrant County, Texas, and being more particularly described by metes and bounds as follows; COMMENCING at a 5/8" iron rod with cap stamped "KHA"recovered at the southwest corner of said 18.276 acre tract,the northwest corner of Lot 2, Block 8 of COUNTRY DAY MEADOWS, THIRD FILING,an addition to the City of Fort Worth,Tarrant County, Texas according to the plat thereof recorded in Volume 388-132, Page 49 of said Official Public Records and on the east line of Tarrant County Water Control and Improvement District, District Number One, as recorded in Volume 4495, Page 993 of said Official Public Records,then run the following; South 77°48'49" East, along the south line of said 18.276 acre tract and the north line of said Lot 2, Block 8, a distance of 147.17 feet being in a non-tangent curve to the right; in a northeasterly direction, departing said south line of 18,276 acre tract and said north line of Lot 2,with said curve to the right having a central angle of 81°24'31", a radius of 131.50 feet,an arc length of 186.84 feet and a long chord bearing and distance of North 45°48'55"East, 171.52 feet; North 86°31'10" East, a distance of 319.80 feet to the northwest and BEGINNING corner of the easement being described; THENCE North 86°31'10"East,a distance of 20,00 feet to a point for corner; THENCE South 3°28'50" East, a distance of 41.27 feet to a point for corner; THENCE South 86031'10"West, a distance of 20.00 feet to a point for corner; THENCE North 3028'50"West, a distance of 41.27 feet to the POINT OF BEGINNING and containing 825 square feet or 0.0189 of an acre of land. EXHIBIT "A" DRAINAGE EASEMENT part of JAMES ROGERS SURVEY, O ?; Abstract No. 1265 o`ST p&, `°•`� EVEN H. BURKE SURVEY JAMES PAUL WARD °""°°••°°fe6°••°•°®° REGISTERED PROFESSIONAL � JAMES PAUL WARD Abstract No. 160 ;Ago�Bs °� City of Fort Worth, Tarrant County, Texas LAND SURVEYOR NO. 5606 ° ess\Q.• Q 801 CHERRY STREET, UNIT 11 ®SUFt`� SUITE 950 Kiml ey>>> Horn FORT WORTH, TEXAS 76102 801 Cherry Street,Unit 11,#850 Tel.No, 817 335-6511 PH. 817-335-6511 ^ Foriworin,Texas 76102 FIRM#10194040 wvnv.klmley-hom.com paul.ward@kimley-horn.com �/ �.9 Z / Sca Drawn by Checked by Data Project No. ea o v,J C� - r0 NIA FCN JPW 12/28/2018 061171037 1 OF5 WARD,PAUL 12128120168:21 AM K:\FTW 11061171037-TRADEMARK WATERS IDE\DWG\061171037_TRADEMARK WATERSIDE STORM WATER QUALITY.DWG PART BEING a tract of land situated in the JAMES ROGERS SURVEY, Abstract Number 1265 and the EVEN H. BURKE SURVEY, Abstract Number 160, City of Fort Worth,Tarrant County, Texas; embracing a portion of Phase 3,Tract 2 being a 18.276 acre tract of land described in the deed to FW Waterside Land LLC as described in County Clerk Document Number D214224895 of the Official Public Records of Tarrant County, Texas, and being more particularly described by metes and bounds as follows; COMMENCING at a point in creek for the southeast corner of said 18.276 acre tract, the northeast corner of Lot 1, Block 8 of COUNTRY DAY MEADOWS, THIRD FILING, an addition to the City of Fort Worth,Tarrant County,Texas according to the plat thereof recorded in Volume 388-132, Page 49 of said Official Public Records and being on the west line of a tract of land described in the deed to Texas Electric Service Company as recorded in Volume 2587, Page 72 of the Deed Records of Tarrant County, Texas and from which a concrete monument found at an angle point in the east line of said Lot 1 and said west line of Texas Electric Service Company tract bears South 18047'29"West, a distance of 171.58 feet, then run the following: North 18°47'29"East, along the east line of said 18.276 acre tract and said west line of Texas Electric Service Company tract, at 107,05 feet pass a concrete monument, in all distance of 328.29 feet; North 79°43'57"West,departing said east line of 18.276 acre tract and said west line of Texas Electric Service Company tract a distance of 4.32 feet to the beginning of a tangent curve to the right; Southwesterly direction with said curve to the left having a central angle of 18°24'31", a radius of 243.50 feet, an arc length of 80.61 feet and a long chord bearing and distance of South 34°07'55"West, 80.24 feet to the northerly and BEGINNING corner of the easement being described; THENCE South 18047'29"West, a distance of 95.09 feet to a point for corner; THENCE North 71012'31"West,a distance of 20.00 feet to a point for corner; THENCE North 18°47'29"East, a distance of 13.98 feet to a point for corner; THENCE North 88°35'05"West, a distance of 54.96 feet to a point for corner; THENCE North 28016'53" East, a distance of 7.94 feet to a point at the beginning of a non-tangent curve to the left; THENCE in a northeasterly direction with said curve to the left having a central angle of 27011'34", a radius of 243.50 feet,an arc length of 115.57 feet and a long chord bearing and distance of North 57012'45"East, 114.48 feet to the POINT OF BEGINNING and containing 2,751 square feet or 0.0632 of an acre of land. EXHIBIT "A" DRAINAGE EASEMENT part of JAMES ROGERS SURVEY, Abstract No. 1265 EVEN H. BURKE SURVEY JAMES PAUL WARD Abstract No. 160 REGISTERED PROFESSIONAL City of Fort Worth, Tarrant County, Texas LAND SURVEYOR NO. 5606 801 CHERRY STREET, UNIT 11 Kimlev))) HornSUITE 950 FORT WORTH, TEXAS 76102 801 Cherry Street,Unit 11,#950 Tel.No.(817)335-6511 P H. 817-335-6511 Fort Worth,Texas 76102 FIRM#10194040 mw.kimley-hom.com Scale Drawn by I Checked by Dale Protect No. Sheet o paul.ward@kimley-horn.com N/A FCN JPW 12282016 061171037 2 OF5 WARD,PAUL 12/28/2016 8:21 AM K:\FTW_SU RVEYAG61171037-TRADEMARK WATERS IDE\DWG\061171037_TRADEMARK WATERSIDE STORM WATER QUALITY.DWG LINE TABLE CURVE TABLE NO. BEARING LENGTH NO, DELTA RADIUS LENGTH CHORD BEARING CHORD L1 S77°4849"E 147,17' C1 81°24'31" 131.50' 186.84' N45048'55"E 171,52' L3 N86°31'10"E 319.80' C2 18°58'05" 243.50' 80.61' S34°07'55"W 80,24' L4 N35018'50"E 161.17' C3 27°11'34" 243.50' 115.57' N57°12'45"E 114,48' L5 N86'31'1 011E 20.00' C9 23039'35" 50.00' 20.65' N71030'06"W 20.50' L6 S03028'50"E 41.27' LOT 3,BLOCK D L7 S86931'10"W 20.00' WATERSIDE ADDITION COUNTY CLERK DOCUMENT NO. L8 NO3°28'50"W 41.27' D214269863 OPRTCT / L9 N18°47'29"E 328,29' ' 1-10 N79°43'57"W 4,32' ,/ =O' L12 S18°47'29"W 95.09' L13 N71°12'31'W 20.00' / V Q� L14 N18°47'29"E 13.98' PHASE 1, TRACT 2 / Jap O 1-15 N88°35'05"W 54.96' 6.190 ACRES ' ��ro FW WATERSIDE LAND LLC �� �iry L16 N28016'53"E 7,94' COUNTY CLERK DOCUMENT NO. f L17 N18°47'29"E 171.58' D214224895OPRTCT ' / VO L18 N18°47'34"E 107,05' PHASE 3, TRACT 2 L59 N18047'36"E 14.22' 18,276 ACRES �/ 7 FW WATERSIDE LAND LLC L60 S71012'31"E 20,50' COUNTY CLERK DOCUMENT NO. L61 S18°47'29"W 14.11' D214224895 P.O.B. ,� / L62 N71'12'31"W 9.50' OPRTCT / PART 2 / i RO.B, PART 1 P.O.C. LOCATION MAP P.O.C. 0 200 400 PART 1 PART 2 GRAPHIC SCALE IN FEET LINE TYPE LEGEND EXHIBIT "A" - -- --- BOUNDARY LINE DRAINAGE EASEMENT EASEMENT LINE part of LEGEND JAMES ROGERS SURVEY, P.O.C.=POINT OF COMMENCING Abstract No. 1265 P.O.B.=POINT OF BEGINNING 5/8"IRR=5/8"IRON ROD W/"KHN"CAP RECOVERED EVEN H, BURKE SURVEY CIRF=CAPPED IRON ROD FOUND IRF=IRON ROD FOUND Abstract No, 160 DRTCT=DEED RECORDS TARRANT COUNTY,TEXAS City of Fort Worth, Tarrant County, Texas OPRTCT=OFFICIAL PUBLIC RECORDS TARRANT COUNTY,TEXAS PRTCT=PLAT RECORDS TARRANT COUNTY TEXAS Kiml NOTES ey>>> Horn Bearing system based on the Texas Coordinate System of 801 Cherry StreetUnit 11,#950 Tei.No.(817)33"511 , 1983, North Central Zone(4202), North American Datum of Fort Worth,Texas 76102 FIRM#10194040 wm kimley-hom.com 1983 Scale Drawn b I Checked by I Dte Pro ect No. I Sheet No. 1"=4W FCN JPW 121282018 061171037 3 OF 5 WARD,PAUL 12/28/2016 821 AM KVTW SURVEYW61171037-TRADEMARK WATERS IDEIDWG1061171037_TRADEMARK WATERSIDE STORM WATER QUALITY.DWG NORTH 0 50 100 mi j GRAPHIC SCALE IN FEET TARRANT COUNTY WATER CONTROL AND IMPROVEMENT DISTRICT DISTRICT NUMBER ONE P�®+B. P.O.C. VOLUME 4495, PAGE 993 v PART 1 OPRTCT PART 1 1/2-INCH IRON ROD W/"FULTON SURV" _ (� CAP FOUND W L3 L5 _ Q DRAINAGE 5 � `-° n / G�� PHASE 3, TRACT EASEMENT L7 W 18.276 ACRES 0.0189 ACRES _z 8/8"IRR FW WATERSIDE LAND LLC 825 SQ. FT. —� L /COUNTY CLERK DOCUMENT NO. D214224895 (� OPRTCT 20'STORM WATER EASEMENT LOT 2, BLOCK 8 � / COUNTRY DAY MEADOWS THIRD FILING _ VOLUME 388-132, PAGE 49 LOT 1, BLOCK 8 'Ji OPRTCT COUNTRY DAY MEADOWS_' -- THIRD FILING -- -Z—" VOLUME 388-132, PAGE 49 OPRTCT LINE TYPE LEGEND EXHIBIT "A" ------- BOUNDARY LINE DRAINAGE EASEMENT EASEMENT LINE pall} of LEGEND JAMES ROGERS SURVEY, P.O.C.=POINT OF COMMENCING P.O.B.=POINT OF BEGINNING Abstract No. 1265 5/8"IRR=5/8"IRON ROD W/"KHA"CAP RECOVERED EVEN H. B U RKE SURVEY CIRF=CAPPED IRON ROD FOUND IRF=IRON ROD FOUND Abstract No, 160 DRTCT=DEED RECORDS TARRANT COUNTY,TEXAS City of Fort Worth, Tarrant County, Texas OPRTCT=OFFICIAL PUBLIC RECORDS TARRANT COUNTY,TEXAS PRTCT=PLAT RECORDS TARRANT COUNTY TEXAS NOTES Kimlev))) Horn Bearing system based on the Texas Coordinate System of 801 Cherry Street,Unit 11,#95o / Tel.No. 817 335-6511 yrrr. 1983,North Central Zone(4202),North American Datum of Fors Worth,Texas 76102 FIRM#10194040 wkimley-homm . co 1988 Sala I Drawn by I Checked by DateProtect No, I Sheeto 1"=100' FCN JPW 12282018 061171037 4 OF 5 WARD,PAUL 12/28/2016 6:21 AM K:\FTW—SURVEYkO6ll7lO37-TRADEMARK WATERS to EIDWG1061171037_TRADEMARK WATERSIDE STORM WATER QUALITY.DWG NORTH PHASE 3, TRACT 2 18.276 ACRES 0 50 100 FW WATERSIDE LAND LLC COUNTY CLERK DOCUMENT NO. D214224895 / GRAPHIC SCALE IN FEET }} OPRTCT W W P R 1 .0.1../. L10� 00U) O W W o PART 2 00 0 W Co Z m / Cry � w L15 U� DRAINAGE > _'S a� L14 4Q PHASE 3, TRACT 2 EASEMENT CONCR `o 18.276 ACRES 0.0632 ACRES MONFO NT U / FW WATERSIDE LAND LLC FO ND V��[/ COUNTY CLERK 21751 SQ. FT. / 0 / DOCUMENT NO. P•O•C• co D214224895 PART 2 �'j OPRTCT STORM WATER EASEMENT(BY PLAT) POINT FALLS IN ------------" - CREEK LOT 1, BLOCK 8 COUNTRY DAY MEADOWS ^ � THIRD FILING VOL ME 388-132, PAGE 49 u� �o OPRTCT LINE TYPE LEGEND EXHIBIT "A" --^—^-- BOUNDARY LINE DRAINAGE EASEMENT EASEMENT LINE part of LEGEND JAMES ROGERS SURVEY, P.O.C.=POINT OF COMMENCING P.O.B.=POINT OF BEGINNING Abstract No. 1265 5/8"IRR=5/8"IRON ROD W/"KHN"CAP RECOVERED EVEN H. BURKE SURVEY CIRF=CAPPED IRON ROD FOUND IRF=IRON ROD FOUND Abstract No. 160 DRTCT=DEED RECORDS TARRANT COUNTY,TEXAS City of Fort Worth, Tarrant County, Texas OPRTCT=OFFICIAL PUBLIC RECORDS TARRANT COUNTY,TEXAS PRTCT=PLAT RECORDS TARRANT COUNTY TEXAS NOTES Kimley* Horn Bearing system based on the Texas Coordinate System of 601 Cherry Street,Unit 11,#950 Tet.No.(817 335-6511 1983, North Central Zone(4202),North American Datum of Fera Werth,Texas 76102 FIRM#10104040 www.kimleyhom. com 1983. scale I Drawnbv I Checked by I Date Protect No, ShaetNo. 1"=100' FCN JPW 1 12/28!2016 061171037 6 OF b WARD,PAUL 12/28/2016 6:21 AM K:1FTW SURVEY1061171037-TRADEMARK WATERS IDEMGW61171037_TRADEMARK WATERSIDE STORM WATER QUALITY.DWG 3 ovoa IR e NinaI INVANG d 75 zk - gao° s I>° z0=_ z e 1R� HO U 13Sg+ / a d a ?Ka^4 o m 6 p Y o.n}o �s_g v 1; k m�� a5 °$ _ z' Iw I— Y <U, =;'" IgagQomOO2>: .N n a � =1 =a9Ww`-��cyNmE A oeei a£ ot3 / — s / %ga 4° €°z$ g as F w o m \' •°5a ,ae = a �w�mpoMYo3w �� - e �-I-JJ -- €a5i°q= Q O O m CO 4..` s ; w m �� i dl_ I J,;•;r°�""/ re' � ,.,,z�`F� \ Q3k "b ("Sim Y g e r eo mi N ° ,. k ° - I \I.\`Ea i' " „oi\�} $ z d 4 P5 pyx 3e ,1~ (�° F g' f 3- ����a ojes Lcix � a@ 41a. 1 o51 3a ua s (// 3o y aa_"am _ , mm £ 6 g e��a� �.�c F h xa,5 3(�e �^ ( 3 ae 3g s` i a g$ €R _ 4 y34 y� p _ 5_- _ 3 3 3 3 S ikkiql3 3 3 ..� d�� i / ,• o / w_�as �� ,�,k k [;e 8 e e a }9 p .§k w o= 8., ZZ,;miy.�'ko b\ '��h-�/1-1\•6iA� °l;ji ssesssxeeks3, vr�c;a gm �pf5c c In \� ��- �_�w_ 5`8� /!�' S ��<•. :'i�:� - Baa / n9e R�e9 Hgga °-883m8� B e - n _ - a.a ee.,Pam.,.,.,.,e�- Lp MIN �..Vs"q f It = Ii1 ) 3gw @€ P // " 3 w N 0 a a"a 3 f 5 k 5 5$R R€3 3 3 3 8 d _rx air&etEoae� Saga IIA off` _ / €=z" a a o e i s f a 'e i S Hlj 15' e3ux 2a // ¢bio I baa ``I ka s ?)9 E"s, ;}IvElin. 18 pv \ e hV i' J � / / `�cY�rcr'�aCSeceFr�F6.�^.ecs�ig � u \ o� (I ��; I I Y•;a a s^^=:c n 2=a,k: a s s s s In s - \ oda; ='Ij1,5< i el 1 r.z_eer.a jig 8 I b IM I � 9= se \ arl silo I � h - s� ;>r r "b- z=H dgc �c g s k;� S k5 £a 4e€Foz $r �a`•z° \ w �,� )6 R I I�QIs 4 1 $ -a k 2 6 SM,= g^" V Q =�` 8 o s£ € z a€s a s a s s s a _ `s83oea° €° \ as \ ` IIJo;) g.., ;; ;;,_,° „ g`5 t I W Z v r a P. 8 k 8 d R .$ UJI W �12d $ 3£ =M1one s 11 �/ e s�, J a n n s s s a s x s _ se a$e B e c s 8 NO J 3eiJi aa°4€$§4p ,li rn 1 0 e__J!js 's z§ a 1 lion_ \ :`g / $ — g k: 555 5g5E_ 4 a Rpm I U z . ap 3 wsod:. e . e .�a`•: / � `�J 6( G�S£5a r..,n z 'g��� �_ - -------- =-x s 3 e x x aE a s 8®®®®®®®0®00®0000®®®®00®®0®®®®® - r�� - ©0000000060800800000®®000000®®® � 0®®6®0®®606606®060®®®®®®00®668e ©®®®®0®0®08®®®©0®0©a6®©©BB®0®06 ®886®®666666606868866600000000® oil 6 - - 806®00600000800080000000®0®®®60 -_ - ®®®®000®00000000060000008866®®® 09®0000000®00®0®6®®®®00®®®®®00® ®®®®0®®®®®®®®®000®0®®0®000®®®®® MENOMINEE���������� loll ® ��"..•�� INSR �{1 {� oil 00®8®000000 _ '��;� 08®088808®08008000800088®®0®®®0 0000®0®0®0®000®000008008800®880 0000000000000®0®®®00008000000®® 800000®000800000®©00®0®8®0©0008 B0®®®0®®®000®B08®00®00®000®000® 0000®®000000000®0000®00000®8®®® BB®00®®®®®®000®00®®0®0®®000000® Bill 0®0®000®00®®@®®00®0®000®0®®®®®0 Igloo 0®00©00®®©0000000000®®®®000000® S I € 5 6�I }¢6 hI--Y(��Yo�ao ;3 p_UOYY 'o9YC7m Zoo �Q°moo �r��N poi 911FJ¢ $P4 $E of yaaa� �t NNE�3 gog `¢ _9E m_EPy em n� ea yF ` wd�_ Hill 6g H ;� gq�Q � p8g pN lull a Hill g'IN liEi ! 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X § m S m / § \ U) \ > \ m £ & { / ¥ 7 c � ( ) / § ƒ � « � f ¢ J \ } \ \ \ \ � CL z � � E- E- § p \ 33 _ m (D (f) Z. < < - _ t � � k $ © ¢ [ j § ( / boo § / / ) ) ` { a &\ } ( § a � � $ \ \ � [ / $ [ / i / \ ) / / / \ } \ \ 4 C/) S # J \ * 2 = * (D v { 2 � m ( e. rn @ , \ \ rt _ / > m / 2 2 3 3 � EXHIBIT B Stormwater Facility Maintenance Agreement SECTION ( ) STORM WATER TREATMENT DEVICE 1.0 GENERAL 1.1 This item shall govern the furnishing and installation of the VortSentry HS® by Contech Engineered Solutions LLC, complete and operable as shown and as specified herein, in accordance with the requirements of the plans and contract documents. 1.2 The Contractor shall furnish all labor, equipment and materials necessary to install the storm water treatment device(s) (SWTD) and appurtenances specified in the Drawings and these specifications. 1.3 The manufacturer of the SWTD shall be one that is regularly engaged in the engineering design and production of systems deployed for the treatment of storm water runoff for at least five (5) years and which have a history of successful production, acceptable to the Engineer. In accordance with the Drawings, the SWTD(s) shall be a VortSentry HS® device manufactured by: Contech Engineered Solutions LLC 9025 Centre Pointe Drive West Chester, OH,45069 Tel: 1 800 338 1122 1.4 Related Sections 1.4.1 Section 02240: Dewatering 1.4.2 Section 02260: Excavation Support and Protection 1.4.3 Section 02315: Excavation and Fill 1.4.4 Section 02340: Soil Stabilization 1.5 All components shall be subject to inspection by the engineer at the place of manufacture and/or installation. All components are subject to being rejected or identified for repair if the quality of materials and manufacturing do not comply with the requirements of this specification. Components which have been identified as defective may be subject for repair where final acceptance of the component is contingent on the discretion of the Engineer. 1.6 The manufacturer shall guarantee the SWTD components against all manufacturer originated defects in materials or workmanship for a period of twelve (12) months from the date the components are delivered to the owner for installation. The manufacturer shall upon its determination repair, correct or replace any manufacturer originated defects advised in writing to the manufacturer within the referenced warranty period. The use of SWTD components shall be limited to the application for which it was specifically designed. 1.7 The SWTD manufacturer shall submit to the Engineer of Record a "Manufacturer's Performance Certification" certifying that each SWTD is capable of achieving the specified removal efficiencies listed in these specifications. The certification shall be supported by independent third-party research 1 { EXHIBIT B Stormwater Facility Maintenance Agreement 1.8 No product substitutions shall be accepted unless submitted 10 days prior to project bid date, or as directed by the Engineer of Record. Submissions for substitutions require review and approval by the Engineer of Record, for hydraulic performance, impact to project designs, equivalent treatment performance, and any required project plan and report (hydrology/hydraulic, water quality, stormwater pollution) modifications that would be required bythe approving jurisdictions/agencies. Contractorto coordinate with the Engineer of Record any applicable modifications to the project estimates of cost, bonding amount determinations, plan check fees for changes to approved documents, and/or any other regulatory requirements resulting from the product substitution. 2.0 MATERIALS 2.1 Concrete for precast stormwater treatment systems shall conform to ASTM C857 and C478 and meet the following additional requirements 2.1.1 In all cases the wall thickness shall be no less than the minimum thickness necessary to sustain HS20-44(MS18) loading requirements as determined by a Licensed Professional Engineer. 2.1.2 Sections shall have tongue and groove or ship-lap joints with a butyl mastic sealant conforming to ASTM C 990. 2.1.3 Cement shall be Type I I Portland cement conforming to ASTM C 150. 2.1.4 All sections shall be cured by an approved method. Sections shall not be shipped until the concrete has attained a compressive strength of 4,000 psi (28 MPa)or until 5 days after fabrication and/or repair,whichever is the longer. 2.1.5 Pipe openings shall be sized to accept pipes of the specified size(s) and material(s), and shall be sealed by the Contractor with a hydraulic cement conforming to ASTM C 595M 2.1.6 Brick or masonry used to build the manhole frame to grade shall conform to ASTM C 32 or ASTM C 139 and shall be installed in conformance with all local requirements. 2.1.7 Casting for manhole frames and covers shall be in accordance with ASTM A48, CL.3513 and AASHTO M105. 2.2 Internal Components and appurtenances shall conform to the following: 2.2.1 All internal components shall be PVC per ASTM D1785, and aluminum alloy 5052-H32 plate in accordance with ASTM B 209. 2.2.2 A bitumen sealant in conformance with ASTM C 990 shall be utilized in affixing the aluminum bays to the concrete vault. 3.0 PERFORMANCE 3.1 The SWTD shall be capable of achieving an 80% reduction of TSS based on a treatment flow rate or calculation as specified by local regulatory requirements unless otherwise stated. Sizing shall be based on a particle size distribution with mean (d50) of 240 microns unless otherwise stated. 3.2 Treatment capacity shall be additionally defined as the maximum flow rate prior to which bypass of any flow occurs. 2 EXHIBIT B Stormwater Facility Maintenance Agreement 3.3 Each stormwater treatment system shall have sediment storage and oil storage capacities equal to or greater than that shown in Table 1 for the corresponding model as specified on the project plans. 3.4 In order to not restrict the Owner's ability to maintain the stormwater treatment system,the minimum dimension providing access from the ground surface to the sump chamber shall be 16 inches in diameter 4.0 EXECUTION 4.1 Each Stormwater Treatment System shall be constructed according to the sizes shown on the Drawings and as specified herein. Install at elevations and locations shown on the Drawings or as otherwise directed by the Engineer. 4.2 Place the precast base unit on a granular subbase of minimum thickness of six inches (152 mm) after compaction or of greater thickness and compaction if specified elsewhere. The granular subbase shall be checked for level prior to setting and the precast base section of the trap shall be checked for level at all four corners after it is set. If the slope from any corner to any other corner exceeds 0.5%the base section shall be removed and the granular subbase material re-leveled. 4.3 Prior to setting subsequent sections place bitumen sealant in conformance with ASTM C 990- 91 along the construction joint in the section that is already in place. 4.4 After setting the precast roof section of the stormwater treatment system, set precast concrete manhole riser sections,to the height required to bring the cast iron manhole covers to grade, so that the sections are vertical and in true alignment with a %-inch (6 mm) maximum tolerance allowed. Backfill in a careful manner, bringing the fill up in 6-inch (152 mm) lifts on all sides and compacting the granular bedding to 95%Standard Procter Density per ASTM D698. If leaks appear, clean the inside joints and caulk with lead wool to the satisfaction of the Engineer. Precast sections shall be set in a manner that will result in a watertight joint. In all instances,installation of Stormwater Treatment Systems shall conform to ASTM specification C 891 "Standard Practice for Installation of Underground Precast Utility Structures". 4.5 Holes made in the concrete sections for handling or other purposes shall be plugged with a nonshrink grout or by using grout in combination with concrete plugs. 4.6 Where holes must be cut in the precast sections to accommodate pipes, do all cutting before setting the sections in place to prevent any subsequent jarring which may loosen the mortar joints. The Contractor shall make all pipe connections. 3 EXHIBIT B Stormwater Facility Maintenance Agreement TABLE 1 Stormwater Treatment Device Storage Capacities Vortechs Model Minimum Sump Storage Oil Storage Capacity(yd 3)/(m 3) Capacity(gal)/(L) HS36 0.5(0.4) 75(285) HS48 0.9(0.7) 137(519) HS60 1.5(1.1) 214(810) HS72 2.1(1.6) 308(1167) HS84 2.8(2.1) 412(1560) HS96 3.7(2.8) 544(2060) END OF SECTION 4 X § m Q 2 \ \ 0 k 2 c > E @ § c � t \ ) / zR \ ( > \ § / / 7 } ( } t o & ; z > { / D \ 33 ` m @ � � - a _ 2 \ � p CD � ° / ] � ( / ( $ ! f& \ } § e - - p ) / \ } * \ \ \ cn 3 \ rt ¥ m g � a � � @ 7 _ ?, m � X ® } i « ` 3 I . m � k m � EXHIBIT B Stormwater Facility Maintenance Agreement SECTION ( ) STORM WATER TREATMENT DEVICE 1.0 GENERAL 1.1 This item shall govern the furnishing and installation of the CDS® by Contech Engineered Solutions LLC, complete and operable as shown and as specified herein, in accordance with the requirements of the plans and contract documents. 1.2 The Contractor shall furnish all labor, equipment and materials necessary to install the storm water treatment device(s) (SWTD) and appurtenances specified in the Drawings and these specifications. 1.3 The manufacturer of the SWTD shall be one that is regularly engaged in the engineering design and production of systems deployed for the treatment of storm water runoff for at least five (5) years and which have a history of successful production, acceptable to the Engineer. In accordance with the Drawings, the SWTD(s)shall be a CDS°device manufactured by: Contech Engineered Solutions LLC 9025 Centre Pointe Drive West Chester, OH, 45069 Tel: 1 800 338 1122 1.4 Related Sections 1.4.1 Section 02240: Dewatering 1.4.2 Section 02260: Excavation Support and Protection 1.4.3 Section 02315: Excavation and Fill 1.4.4 Section 02340: Soil Stabilization 1.5 All components shall be subject to inspection by the engineer at the place of manufacture and/or installation. All components are subject to being rejected or identified for repair if the quality of materials and manufacturing do not comply with the requirements of this specification. Components which have been identified as defective may be subject for repair where final acceptance of the component is contingent on the discretion of the Engineer. 1.6 The manufacturer shall guarantee the SWTD components against all manufacturer originated defects in materials or workmanship for a period of twelve (12) months from the date the components are delivered to the owner for installation. The manufacturer shall upon its determination repair, correct or replace any manufacturer originated defects advised in writing to the manufacturer within the referenced warranty period. The use of SWTD components shall be limited to the application for which it was specifically designed. 1.7 The SWTD manufacturer shall submit to the Engineer of Record a "Manufacturer's Performance Certification" certifying that each SWTD is capable of achieving the specified removal efficiencies listed in these specifications. The certification shall be supported by independent third-party research 1 v EXHIBIT B Stormwater Facility Maintenance Agreement 1.8 No product substitutions shall be accepted unless submitted 10 days prior to project bid date, or as directed by the Engineer of Record. Submissions for substitutions require review and approval by the Engineer of Record, for hydraulic performance, impact to project designs, equivalent treatment performance, and any required project plan and report (hydrology/hydraulic, water quality, stormwater pollution) modifications that would be required by the approving jurisdictions/agencies. Contractor to coordinate with the Engineer of Record any applicable modifications to the project estimates of cost, bonding amount determinations, plan check fees for changes to approved documents, and/or any other regulatory requirements resulting from the product substitution. 2.0 MATERIALS 2.1 Housing unit of stormwater treatment device shall be constructed of pre-cast or cast-in-place concrete, no exceptions. Precast concrete components shall conform to applicable sections of ASTM C 478,ASTM C 857 and ASTM C 858 and the following: 2.1.1 Concrete shall achieve a minimum 28-day compressive strength of 4,000 pounds per square-inch (psi); 2.1.2 Unless otherwise noted, the precast concrete sections shall be designed to withstand lateral earth and AASHTO H-20 traffic loads; 2.1.3 Cement shall be Type III Portland Cement conforming to ASTM C 150; 2.1.4 Aggregates shall conform to ASTM C 33; 2.1.5 Reinforcing steel shall be deformed billet-steel bars, welded steel wire or deformed welded steel wire conforming to ASTM A 615,A 185, or A 497. 2.1.6 Joints shall be sealed with preformed joint sealing compound conforming to ASTM C 990. 2.1.7 Shipping of components shall not be initiated until a minimum compressive strength of 4,000 psi is attained or five (5) calendar days after fabrication has expired,whichever occurs first. 2.2 Internal Components and appurtenances shall conform to the following: 2.2.1 Screen and support structure shall be manufactured of Type 316 and 316L stainless steel conforming to ASTM F 1267-01; 2.2.2 Hardware shall be manufactured of Type 316 stainless steel conforming to ASTM A 320; 2.2.3 Fiberglass components shall conform to the ASTM D-4097 2.2.4 Access system(s) conform to the following: 2.2.5 Manhole castings shall be designed to withstand AASHTO H-20 loadings and manufactured of cast-iron conforming to ASTM A 48 Class 30. 3.0 PERFORMANCE 3.1 The SWTD shall be capable of achieving an 80%reduction of a particle size distribution having a mean particle size (dso)of 125 microns unless otherwise stated. 3.2 The SWTD shall be capable of capturing and retaining 100 percent of pollutants greater than or equal to 2.4 millimeters (mm) regardless of the pollutant's specific gravity (i.e.: floatable and neutrally buoyant materials) for flows up to the device's rated-treatment capacity. The SWTD shall be designed to retain all previously captured pollutants addressed by this subsection under all flow conditions. The SWTD shall be capable of capturing and retaining 2 EXHIBII B Stormwater Facility Maintenance Agreement total petroleum hydrocarbons. The SWTD shall be capable of achieving a removal efficiency of 92 and 78 percent when the device is operating at 25 and 50 percent of its rated-treatment capacity. These removal efficiencies shall be based on independent third-party research for influent oil concentrations representative of storm water runoff(20±5 mg/L).The SWTD shall be greater than 99 percent effective in controlling dry-weather accidental oil spills. 3.3 The SWTD shall be designed with a sump chamber for the storage of captured sediments and other negatively buoyant pollutants in between maintenance cycles. The minimum storage capacity provided by the sump chamber shall be in accordance with the volume listed in Table 1. The boundaries of the sump chamber shall be limited to that which do not degrade the SWTD's treatment efficiency as captured pollutants accumulate. The sump chamber shall be separate from the treatment processing portion(s) of the SWTD to minimize the probability of fine particle re-suspension. In order to not restrict the Owner's ability to maintain the SWTD, the minimum dimension providing access from the ground surface to the sump chamber shall be 16 inches in diameter. 3.4 The SWTD shall be designed to capture and retain Total Petroleum Hydrocarbons generated by wet-weather flow and dry-weather gross spills and have a capacity listed in Table 1 of the required unit. 3.5 The SWTD shall convey the flow from the peak storm event of the drainage network, in accordance with required hydraulic upstream conditions as defined by the Engineer. If a substitute SWTD is proposed, supporting documentation shall be submitted that demonstrates equal or better upstream hydraulic conditions compared to that specified herein. This documentation shall be signed and sealed by a Professional Engineer registered in the State of the work.All costs associated with preparing and certifying this documentation shall be born solely by the Contractor. 3.6 The SWTD shall have completed field tested following TARP Tier II protocol requirements 4.0 EXECUTION 4.1 The contractor shall exercise care in the storage and handling of the SWTD components prior to and during installation. Any repair or replacement costs associated with events occurring after delivery is accepted and unloading has commenced shall be borne by the contractor. 4.2 The SWTD shall be installed in accordance with the manufacturer's recommendations and related sections of the contract documents. The manufacturer shall provide the contractor installation instructions and offer on-site guidance during the important stages of the installation as identified by the manufacturer at no additional expense. A minimum of 72 hours notice shall be provided to the manufacturer prior to their performance of the services included under this subsection. 4.3 The contractor shall fill all voids associated with lifting provisions provided by the manufacturer. These voids shall be filled with non-shrinking grout providing a finished surface consistent with adjacent surfaces. The contractor shall trim all protruding lifting provisions flush with the adjacent concrete surface in a manner, which leaves no sharp points or edges. 3 EXHIBIT B Stormwater Facility Maintenance Agreement 4.4 The contractor shall removal all loose material and pooling water from the SWTD prior to the transfer of operational responsibility to the Owner. TABLE 1 Storm Water Treatment Device Hydraulic and Storage Capacities Minimum Sump CDS Model Treatment Capacity Storage Capacity Minimum Oil Storage (cfs)/(L/s) (yd 3)/(m 3) Capacity(gal)/(L) CDS2015-4 0.7(19.8) 0.9(0.7) 61(232) CDS2015-5 0.7(19.8) 1.5(1.1) 83(313) CDS2020-5 1.1(31.2) 1.5(1.1) 99(376) CDS2025-5 1.6(45.3) 1.5(1.1) 116(439) CDS3020-6 2.0(56.6) 2.1(1.6) 184(696) CDS3025-6 2.4(68.0) 2.1(1.6) 210(795) CDS3030-6 3.0 (85.0) 2.1(1.6) 236(895) CDS3035-6 3.8 (106.2) 2.1(1.6) 263(994) CDS3535-7 3.8 (106.2) 2.9(2.2) 377(1426) CDS4030-8 4.5 (127.4) 5.6(4.3) 426(1612) CDS4040-8 6.0(169.9) 5.6(4.3) 520(1970) CDS4045-8 7.5 (212.4) 5.6(4.3) 568(2149) CDS5640-10 9.0 (254.9) 8.7(6.7) 758(2869) CDS5653-10 14.0(396.5) 8.7(6.7) 965(3652) CDS5668-10 19.0 (538.1) 8.7(6.7) 1172(4435) CDS5678-10 25.0(708.0) 8.7(6.7) 1309(4956) CDS7070-DV 26.0 (736.3) 3.6(2.8) 914(3459) CDS10060-DV 30.0(849.6) 5.0(3.8) 792 (2997) CDS10080-DV 50.0 (1416.0) 5.0(3.8) 1057 (4000) CDS100100-DV 64.0 (1812.5) 5.0(3.8) 1320(4996) END OF SECTION 4 4' AITENDIX B SHOP DRAWINGS liSTORXIWATERICOMAlOPS126VORTSENTRVHSVOSTMDARDDRAWMGM%k4 %VSHSLTLDNM 51162014431PM 0 z D co � 0 3� O N Dm mx 0 p OA y0 00 mm m D� frf��A - p: IDiI 0 y.lpl C ❑ CO o - sgg m z — D pp D C Y OJ 0 x Z mbv m -60 a) go n �D 0 �o m N m vm A0 0 m NO 0 m a S D U<i 4 uOOOOODDa 0x10000�OmN m y y 2 m O D ?� -n O- Z m T ,U AAa���]]p�p1��x]NND �CC�tia maD N pOy <m dt Z -iDDDm DSm_1 31Zy DRNin Y�(mlr � '�� :fi DO �' o O 3000 0� O 3�cfZn�2AZS2O � O mA ?£ Z - ?OOO�OmD ZzZ cDi Dyym 0pm25y1 D� Km ##A O yD ma m CxxxKxmmO CRiNZ{ y3vN _ 3 yy y i1Om� 3O0VZ0 of Ovmm rD-mrD-x Nm Zm nO zsT. 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General Maintenance Procedures The structural and functional integrity of the Facility shall be maintained at all times by following the manufacturer recommendations for maintaining the system, or once every 6 months, whichever is of the shorter duration.Disposal of litter, sediment, and debris shall be in accordance with federal, state and local regulations. PREVENTIVE MAINTENANCE/INSPECTION • Visual inspections of all components will be conducted at frequency specified by manufacturer and documented in the manufacturer supplied or City's inspection form (Exhibit C) • The inspection form shall document the condition of the Facility's components, Inspections for each water quality device shall be performed using the form below, or equivalent from the manufacturer of the device. If performing inspections using manufacturer's inspection list, attach to Exhibit C. Written maintenance and repair records shall be maintained by the party or parties signing the attached Agreement and shall be provided to the City annually Inspection forms shall be sent to the following: Storm Water Division, Transportation & Public Works Department, City of Fort Worth 1000 Throckmorton Street, Fort Worth, TX 76103 STORMWATER FACILITY MAINTENANCE AGREEMENT 9 Rev.12/29/2014 ƒj > c POa u ? < E ¢ 0 $ m a2 k ZrCD 2 7 2 0 \ J (/ o -n 0o ao $ � § S \ K - {2\ /g n 32 \ 0- 02CD CD C ;7 ° C z I O \ z \ 2 / CD =3 / j ƒ7 / CD \/ 2 m = © 3 E $ \ CL S q 2 / C / 2 ƒ @ m (D ° G \ / / C:@ _ _ CD 0 / 2 o U / > q § \• CD CID / 7 $=CD ] ' F. ± ? « p § m 2 \ \ ƒ a § (D m CL / _ §D � w §y\ CD90 C �// o CD p. ƒ m ¢ eD eD CD § § 7 o k Q _ (D .. \ 2 k o_ 7 J z £ % � 01 - O � C Ul q 2 U \ � (D � C _ § q n n CD _ m 0 > X CD Z C) CD 7 + 0 Exhibit "D" [City Approved Maintenance Specifications from Manfacturer of Water Quality Device]. STORMWATER FACILITY MAINTENANCE AGREEMENT 11 Rev.12/29/2014 EXHIBIT D -\\I'--NTECH Stormwater Facility Maintenance Agreement ENGINEERED SOLUTIONS VortSentryO HS Wlaontenace GuNe EXHIBIT D VortSentry° HS Maintenance Stormwater Facility Maintenance Agreement The VortSentry HS system should be inspected at regular intervals Cleaning and maintained when necessary to ensure optimum performance. Cleaning of the VortSentry HS should be done during dry weather The rate at which the system collects pollutants will depend more conditions when no flow is entering the system. Cleanout of the heavily on site activities than the size of the unit, i.e., unstable VortSentry HS with a vacuum truck is generally the most effective soils or heavy winter sanding will cause the treatment chamber to and convenient method of excavating pollutants from the system. fill more quickly, but regular sweeping will slow accumulation. Simply remove the manhole cover and insert the vacuum hose into the sump. All pollutants can be removed from this one access Inspection point from the surface with no requirements for Confined Space Inspection is the key to effective maintenance and is easily Entry. performed. Pollutant deposition and transport may vary from year to year and regular inspections will help ensure that the In installations where the risk of petroleum spills is small, liquid system is cleaned out at the appropriate time.At a minimum, contaminants may not accumulate as quickly as sediment. inspections should be performed twice per year(i.e. spring and However, an oil or gasoline spill should be cleaned out fall) however more frequent inspections may be necessary in immediately. Motor oil and other hydrocarbons that accumulate equipment washdown areas and in climates where winter sanding on a more routine basis should be removed when an appreciable operations may lead to rapid accumulations of a large volume layer has been captured.To remove these pollutants, it may be of sediment. It is useful and often required as part of a permit preferable to use adsorbent pads,which solidify the oils.These to keep a record of each inspection. A simple inspection and are usually much easier to remove from the unit individually, and maintenance log form for doing so is available for download at less expensive to dispose than the oil/water emulsion that may be www.contechstormwater.com. created by vacuuming the oily layer. Floating trash can be netted out if you wish to separate it from the other pollutants. The VortSentry HS should be cleaned when the sediment has accumulated to a depth of two feet in the treatment chamber. Manhole covers should be securely seated following cleaning This determination can be made by taking two measurements activities to prevent leakage of runoff into the system from above with a stadia rod or similar measuring device; one measurement and also to ensure proper safety precautions. If anyone physically from the manhole opening to the top of the sediment pile and enters the unit, Confined Space Entry procedures need to be the other from the manhole opening to the water surface. If the followed. difference between these measurements is less than the distance given in Table 1,the VortSentry HS should be maintained to Disposal of all material removed from the VortSentry HS should ensure effective treatment. be done is accordance with local regulations. In many locations, disposal of evacuated sediments may be handled in the same manner as disposal of sediments removed from catch basins or deep sump manholes. Check your local regulations for specific requirements on disposal. in m ft m yd' 0 galliter HS36 36 0.9 3.6 1.1 0.5 0.4 83 314 HS48 48 12 4.7 1.4' 0.9 0.7 158 598 HS60 60 1.5 6 1.8 1.5 1.1 258 978 HS72 72 1.8 7.1 2.2 2.1 1.6 372 1409 HS84 84 2.1 8.4 2.6 2.9 2.2 649 2458 HS96 96 2.4 9.5 1 2.9 3.7 2.8 1 845 3199 Table 1: VortSentry HS Maintenance Indicators and Sediment Storage Capacities. EXHIBII U Stormwater Facility Maintenance Acireement 7VortSentryS Model: Location: Water depth Floatable layer Describe Maintenance Date maintenance Comments to shipment' thickness' Personnel performed 1. The water depth to sediment is determined by taking two measurements with a stadia rod:one measurement from the manhole opening to the top of the sediment pile and the other from the manhole opening to the water surface. If the difference between these measurements is less than the distance given in Table 1,the system should be cleaned out. Note:To avoid underestimating the volume of sediment in the chamber,the measuring device must be carefully lowered to the top of the sediment pile. 2. For optimum performance,the system should be cleaned out when the floating hydrocarbon layer accumulates to an appreciable thickness. In the event of an oil spill,the system should be cleaned immediately. EXHIBIT D Stormwater Facility Maintenance Agreement OWNTECH ENGINEERED SOLUTIONS CDS'1�1 Inspection and Maintenance Guide Jr ......... .......... I.......... ........ ............... EXHIBIT D Stormwater Facility Maintenance Agreement Maintenance Cleaning The CDS system should be inspected at regular intervals and Cleaning of a CDS systems should be done during dry weather maintained when necessary to ensure optimum performance. conditions when no flow is entering the system.The use of a The rate at which the system collects pollutants will depend more vacuum truck is generally the most effective and convenient heavily on site activities than the size of the unit. For example, method of removing pollutants from the system. Simply remove unstable soils or heavy winter sanding will cause the grit chamber the manhole covers and insert the vacuum hose into the sump. to fill more quickly but regular sweeping of paved surfaces will The system should be completely drained down and the sump slow accumulation. fully evacuated of sediment.The area outside the screen should also be cleaned out if pollutant build-up exists in this area. Inspection In installations where the risk of petroleum spills is small, liquid Inspection is the key to effective maintenance and is easily contaminants may not accumulate as quickly as sediment. performed. Pollutant transport and deposition may vary from However,the system should be cleaned out immediately in year to year and regular inspections will help ensure that the the event of an oil or gasoline spill should be cleaned out system is cleaned out at the appropriate time. At a minimum, immediately. Motor oil and other hydrocarbons that accumulate inspections should be performed twice per year(e.g. spring on a more routine basis should be removed when an appreciable and fall) however more frequent inspections may be necessary layer has been captured.To remove these pollutants, it may in climates where winter sanding operations may lead to rapid be preferable to use absorbent pads since they are usually less accumulations, or in equipment washdown areas. Installations expensive to dispose than the oiVwater emulsion that may be should also be inspected more frequently where excessive created by vacuuming the oily layer.Trash and debris can be amounts of trash are expected. netted out to separate it from the other pollutants. The screen The visual inspection should ascertain that the system should be power washed to ensure it is free of trash and debris. components are in working order and that there are no Manhole covers should be securely seated following cleaning blockages or obstructions in the inlet and separation screen. activities to prevent leakage of runoff into the system from above The inspection should also quantify the accumulation of and also to ensure that proper safety precautions have been hydrocarbons,trash,and sediment in the system. Measuring followed. Confined space entry procedures need to be followed pollutant accumulation can be done with a calibrated dipstick, if physical access is required. Disposal of all material removed tape measure or other measuring instrument. If absorbent from the CDS system should be done in accordance with local material is used for enhanced removal of hydrocarbons,the level regulations. In many jurisdictions, disposal of the sediments may of discoloration of the sorbent material should also be identified be handled in the same manner as the disposal of sediments during inspection. It is useful and often required as part of an removed from catch basins or deep sump manholes. operating permit to keep a record of each inspection. A simple form for doing so is provided. Access to the CDS unit is typically achieved through two manhole access covers. One opening allows for inspection and cleanout of the separation chamber(cylinder and screen)and isolated sump. The other allows for inspection and cleanout of sediment captured and retained outside the screen. For deep units, a single manhole access point would allows both sump cleanout and access outside the screen. The CDS system should be cleaned when the level of sediment has reached 75%of capacity in the isolated sump or when an appreciable level of hydrocarbons and trash has accumulated. If absorbent material is used, it should be replaced when a significant discoloration has occurred. Performance will not be impacted until 100%of the sump capacity is exceeded however a it is recommended that the system be cleaned prior to that : for easier removal of sediment. The level of sediment is easily �S determined by measuring from finished grade down to the top of the sediment pile. To avoid underestimating the level of sediment in the chamber,the measuring device must be lowered to the top of the sediment pile carefully. Particles at the top of the pile typically offer less resistance to the end of the rod than consolidated particles toward the bottom of the pile. Once this f measurement is recorded, it should be compared to the as-built drawing for the unit to determine weather the height of the sediment pile off the bottom of the sump floor exceeds 75%of the total height of isolated sump. C � CDS Diameter Distance from Water Surface Sediment Model to Top of Sediment Pile Storage Capacity ft m ft m yd3 m3 � 1 1 1 • 1 � 1 1 • � 1 � 1 1 I • Sys' Wx ''` �� T. �`�_�it s u . ' • %'� �� b��n r .. RR Aff;:nl ti �x��� fy i J I •✓. :: ;� ��.�. ,mow tE i ,�-_ 5_. �,�'1 �`•,;�_I-_,•;(_ , AIL — Support • Drawings and specifications are available at www.contechstormwater.com. • Site-specific design support is available from our engineers. ©2014 Contech Engineered Solutions LLC Contech Engineered Solutions LLC provides site solutions for the civil engineering industry. Contech's portfolio includes bridges,drainage,sanitary sewer,stormwater,earth stabilization and wastewater treament products.For information,visit wvvw.ContechES,com or call 800.338.1122 NOTHING IN THIS CATALOG SHOULD BE CONSTRUED AS AN EXPRESSED WARRANTY OR AN IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE.SEE THE CONTECH STANDARD CONDITION OF SALES(VIEWABLE AT WWW.CONTECHES.COW COS)FOR MORE INFORMATION. The product(s)described may be protected by one or more of the following US patents: 5,322,629;5,624,576;5,707,527;5,759,415;5,788,848;5,985,157;6,027,639;6,350,374; 6,406,218;6,641,720;6,511,595;6,649,048;6,991,114;6,998,038;7,186,058;7,296,692; ' 7,297,266;7,517,450 related foreign patents or other patents pending. IZA171161 I u Stormwater Facility Maintenance Agreement • - • • • CDS Model: Location: Water Floatable Describe Maintenance Date depth to Layer Maintenance Comments Personnel sediment' Thicknessz Performed 1. The water depth to sediment is determined by taking two measurements with a stadia rod:one measurement from the manhole opening to the top of the sediment pile and the other from the manhole opening to the water surface. If the difference between these measurements is less than the values listed in table 1 the system should be cleaned out. Note:to avoid underestimating the volume of sediment in the chamber, the measuring device must be carefully lowered to the top of the sediment pile. 2. For optimum performance,the system should be cleaned out when the floating hydrocarbon layer accumulates to an appreciable thickness. In the event of an oil spill,the system should be cleaned immediately.