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HomeMy WebLinkAboutOperation & Maintenance Plan - - 1450 Osgood Street Long Term Pollution Prevention Operation and Maintenance Plan 1600 Osgood Street, North Andover— Lot B (Amazon Distribution Facility) Lo9q, Term.Po.....l....l..ution PreventionO _ ratiq_n and Maintenance Plan The purpose of this Long Term Pollution Prevention Operation and Maintenance Plan (JJO&MrI) is to provide project specific information related to the long term operation, maintenance, inspection, documentation, and performance of the structural and non-structural stormwater features. Regular inspection and maintenance of the stormwater management system is necessary to ensure proper operation of the system. The following O&M has been prepared to ensure the proposed system functions as intended. This O&M plan identifies maintenance procedures, schedules, and responsible parties. The Long Term Pollution Prevention Operation and Maintenance Plan has been compiled in general acc ordance with Federal, State, and Local requirement in addition to stormwater best management practices ("BMPsr`}. Rey 4pnsible Parties: Osgood RT-1 25 Project, LLC, or any successor of, shall be the party responsible for implementing this O&M plan. Osgood FAT 125 Project, LLC 5050 VV. Tilghman Street Suite 435 Allentown, PA 18104 Estimated Annual Costs The estimated annual cost for the implementation of this plan is $11,500. StormwatgrO j,Lera tic iLaqd Mainteqpppq Procedures are obtained from the Massachusetts Storm water Handbook. These procedures are for all structural and non-structural MPs, and are intended to eliminate or reduce the long term soil erosion and degradation of stormwater features following c onstruction completion. The inspection and successful implementation of all stormwater measures, shall be the Property Manager's responsibility. Long Term Pollution Prevention Operation and Maintenance Plan 1600 Osgood Street, North Andover- Lot B (Amazon Distribution Facility) Structural Pretreatment BMPs Closed network is to be inspected quarterly and cleaned annually to maintain long term functionality in addition to the following procedures. Deep Sump Catch Basin ]Frequency .................. ... ...................................................... ...........................W Inspect units Four times per year ........4",_................ .......... ...... -—-—--------- ..... Clean units Four times per year or whenever they depth of deposits,is greater than or equal,to one half' the depth from they bottom of the Invert of the lowest pipe in the,basin. ................. ......... ........ ................................................. ................ Proprietary Separators .......... fiA00- r n�m�����n�� �u! ���Na� �� �aNNw��w ���rym�oww,aot.. rNwuNrDNrDFrequency ActMty ..w,�:��N,N1m�,�N,1NNNimimlvnw�WDWDUNN1w�D�mN>AYN�Neer,rtnNHJwv�rw�wJ,,,f✓ �'nR�-b w�nlmmnr n�mm�nr�nl nl ��mmmw.MMn �nvmmrrrrrrrrrrrrr�'x,;'m .............................. .........................................m m m........................................... Inspect in accordance With manufacturer requirements,but no less than twice a See activity year following installation,and no less than once a year thereafter. ................ ........................ Remove sediment and other trapped pollutants at frequency or level specified by I See manufacturer. manufacturer information Sediment Forebays Act1vtty Frequency Inspect sediment forebays nthly 'Mo ......-—-------............................. ................... .................11................ ........ .................) Clean sed ff* nent forebays Four times per year and when sediment depth is between 3 to 6 feet. ........a.................................. Vegetated Filter Strips .......... .........................................................................................................................................-----------.......................................................................................... Activity Frequency Inspect the level spreader for sediment buildup and Every six months during the first year.Annually the vegetation for signs of erosion,bare spots,and. thereafter. overall health. Regularly mow the grass, As needed MR1. ............ ..........�,,i---—-------------—11...................................................................................................... ................................................................................................... ............. 10 Remove sediment from the toe of slope or level As needed spreader and reseed bare spots. ........................................-­,.................... Treatment BMPs Bioretention Areas& Rain Gardens Long Term Pollution Prevention Operation and Maintenance Plan 1600 Osgood Street, North Andover- Lot B (Amazon Distribution Facility') Bio.retention Maintenance Schedule M Activity Time of Year Frequency mm� Um Inspect&remove trash 'Year round Monthly Mulch Spring Annually Remove dead vegetation Fall or Spring Annually Replace dead vegetation Spring Annually Prune Spring or Fall Annually Replace entire media& Late Spring/early As needed* all vegetation i Summer o Extended Dry Detention Basins 1-1,,,---."�-�.1l.-I'l�",-.-,-,--�-11111-."--,"".----1--l----,---".".,�-'-',,-,""-,-,--,----,�,,,,,,,-,-""—,�--"",''-"I............ Activity Frequency ................ ........ ........... Inspect extended dry detention basins I At least twice a year and during and after major storms. I—................. --------------- ............ Ex arm ffie the outlet structure for evidence of At least twice a year. clogging or outflow release velocities that are greater than design flow. Mow the upper-stage,side slopes,embankment, At least twice year and emerge SPIncy ,'llway. a . .......... ----------------- Remove trash and debris. At least twice a year. ........... ........... ----------------- Remove sediment from the basin. At least once every 5 years. ............... ...... ............... Wet Basins ......................... . . ....... .......................11"------------- ............... Activity I --—------------ .. . ................ Frequency .......... Inspect wet basins to ensure they are operating as At least once a year. designed ............ ...................- .............................. ........... Mow the upper-stage,side slopes,embankment At least Mice a year. and emergency spillway. Check the sediment forebay for accumulated At least twice a year. sediment,trash,and debris and remove it. J, Remove sediment from the basin. �As necessary,and at least once every 10 years ............... Infiltration BMPs Infiltration Basin Long Term Pollution Prevention Operation and Maintenance Plan 1600 Osgood Street, North Andover- Lot 8 (Amazon Distribution Facility) "NWOMWOMMM ------ Activity Frequency Preventafive maintenance Twice a year Inspect to ensure proper functioning After every major storm during first 3 months of operation and twice a year thereafter and when there am discharges through the high outlet �Mw r4lce. Mow the buffer area,side slopes,and basin bottom Twice a if grassed floor;rake if stone bottom remove trash and debris;remove grass clippings and accumulated organic matter ----w4i Inspect and clean pretreatment devices Every other month recommended and at least twice a year and after every major storm event. Dry Well Activity Frequency Inspect dry wells. After every major storm In the first few months after construction to ensure proper stabilization '11ii�jreaftt �nu;�Ily.' iiJ!funqion_ Conveym;p BMPs Grassed Channel (Bioffiter Swale) -—-------------- ................... Ac Frequency Remove-sediment from forebay Annually NNooaae ................................................................................................ ........................ .. ........ ........... ............................ ............................................................................................ ........ ...................... Remove sediment from grass channel Annually Ar. .................. weua ............. ............. Mow Once a month during growing season Repair areas of erosion and reve etatte 1,As needed,but no less than once a year L................. I ......... ............................I.................................................................................... Non-Structural Pretreatment BM Ps Street Sweeping Aq:iyty Frequeq��...... High Efficiently Vacuum Quarterly Average, with sweeping scheduled primary in spring and fall Regenerative Air Sweeper Quarterly Average, with sweeping scheduled F� Wiary in_s ring and fall Mechanical Sweeper Monthly Average, with sweeping scheduled primarily in siring and fall. Material and_EqM1p meat_More g Material and equipment storage shall be done in a safe and orderly fashion. All debris and waste shall be collected and disposed of offsite in a legal manner in accordance with local and federal guidelines. The temporary storage of snow may be permitted in accordance with the locally approved permit plans in the pre-determined locations. Snow may not be disposed of in Long Term Pollution Prevention Operation and Maintenance Plan 1600 Osgood Street, North Andover- Lot B (Amazon Distribution Facility) or around wetland. The wetlands, wetlands buffer zones, and snow storage locations are show in the attached permit drawings. All curb leak-off shall be cleared of snow and debris within 24-hours of a snowfall event to ensure proper drainage. Safll 4;.ontM[&Containment The following measures must be implemented to minimize, control, and contain spills: 0 More chemicals inside, when applicable 0 Pick up litter & The spill shall be contained as close to the source as possible with a dike of absorbent materials from the spill cleanup equipment 4such as socks, pads, pillows, or I/pigs1f). Additional dikes must be constructed to protect swales or other stormwater conveyances or streams. A cover or dike will shall protect any other stormwater structures such as catch basins If the spill has a potential of entering the extended detention pond (B-1) the emergency shut off valve at the pond inlet should be closed Implement employee training program and hold session at least once a year Identify spill control team aim Pesticides and Feru gers Pesticide/Herbicide Usage —No pesticides are to be used unless a single spot treatment is required for a specific control application. Fertilizer usage should be avoided. If deemed necessary, slow release fertilizer should be used. Fertilizer may be used to begin the establishment of vegetation in bare or damaged areas, but should not be applied on a regular basis unless necessary Long Term Pollution Prevention Operation and Maintenance Plan 1600 Osgood Street, North Andover- Lot B (Amazon Distribution Facility) STORMWATER MANAGEMENT SYSTEM INSPECTION AND MAINTENANCE CHECKLIST 1600 Osgood Street Inspector: Date: Time: Site Conditions: Inspection & Maintenance It Satisfactory? Comments or Corrective Measures I Yes (Y) or No (N) Taken D Inspect Units Y N Clean Units Y N Proprietary Separators Inspect per Manufacture Recommendations Y N Remove Sediments and Pollutants Y N Sediment Forebays Inspect Sediment Fore bays Y N Clean Sediment Forebays —Y N I Y t ted Filter Strips Inspect Filter Strips N Y Regularly Mow the Grass Y N Remove Sediment J_Y N__ Bioretention Areas & Rain Gardens Inspect & Remove Trash Y N Remove & Replace Dead Vegetation Y N Extended Dry Detention Basin -Inspect Basin Y N Inspect Outlet Structure N Y N Mow Basin Y N ,_Remove Trash and Debris Y N Long Term Pollution Prevention Operation and Maintenance Plan 1600 Osgood Street., North Andover- Lot B (Amazon Distribution Facility) nr F �r)cr 1 6010 Osgood Street Inspector: Date: Time: Site Conditions: Inspection & Maintenance Item Satisfactory? Comments or Corrective Measures m Yes (Y) or No (N) Taken Wet Basins Inspect Basin Y Mow Basin Y N mol�' Check forebay for accumulated sediment, trash, and Y N debris. Remove as required. --- -T- R jmove se diment from basin. InfiJ�ratinn Basins Fln—spect Basin Y N M I Mow Basin Y —N Check forebay for accumulated sediment, trash, and Y N debris. Remove as required. Remove sediment from basin. Y N Dry Well Inspect and clean Y N IL Grassed Channel (Biofilt r Swa-le) Remove-sediment from forebay Y N Remove sediment from grass channel Y N ---1 F Mow Y N Repair areas of erosion and revegetate Sj� N ---------- S t r e e t S.ww.e e p.i.n g. High Efficient Vacuum quarterly Y N Fenertive fir weeper p�aerteri N l� echenicI sweeper monthl Y N C yd IIIIIIIl�II,'IIIl . I�w. �V a lip �p I+ I;y i I r'iI;��,x rre,�l g:uuuuuuuuuuuuuuuluuuiiiiiilllllVV il�a�u�e irr�y��ud II I °1�'llull I I / J /i i �a i 1 r r Y 1 G l � / III Vuuuuuuuuilii """'�?y� II 0i a 'W 'W iii I M IW Illo IIIIOWWOI e a WOWIWWOW'... e a in c o n a *NOTE* OPERATIONS ATIONS AND MAINTENANCE PROCEDURES IN LIUDEING INSPECTIONS AND CLEANING MAY BE PERFORMED BY ANY QUALIFIED PARTY IIVIVIVIVIVIVIVIVI IVIVIVI IIIUIVUIVI Vmmu �u I mIW pu Ilmflu IlulululllllllulP �,�wI°° mml�ulWu p Dul We lummluuumCa����paci'111V 0I ml «<rt _�.�P .......................... . ..QQ«��������...�.......... Y..Y Y Y Y ,.,.,µuµu......... .... w .��� »,,,,.....,,,,..��......:.........,rv„rv,...n�� Vortex Separator for Stormwater Treatment Page 2 First Defense Operation and Maintenance Manual 41111111111111 ljdllll�lilt s a l lollil�o" 3 FIRST DEFER By HYDRO INTERNATIONAL -INTRODUCTION -OPERATION -POLLUTANT CAPTURE AND RETENTION 4 MODEL SIZES&CONFIGURATIONS -FIRST DEFENSE"COMPONENTS 5 MAINTENANCE -OVERVIEW -MAINTENANCE EQUIPMENT CONSIDERATIONS -DETERMINING YOUR MAINTENANCE SCHEDULE 6 MAINTENANCE PROCEDURES -INSPECTION -FLOATABLES AND SEDIMENT CLEAN OUT 8 FIRST DEFENSEO INSTALLATION LOG 9 FIRST DEFEND E'o INSPECTION AND MAINTENANCE LOG ........... .......... ................. COPYRIGHT STATEMENT.The contents of this manual,including the graphics contained herein,are intended for the use of the recipient to whom the document and all associated information are directed. Hydro International plc owns the copyright of this document,which is supplied in confidence. It must not be used for any purpose other than that for which it is supplied and must not be reproduced, in whole or in part Stored in a retrieval system or transmitted in any form or by any means without prior permission in writing from Hydro International plc. First Defense4'is a trademarked hydrodynamic vortex separation device of Hydro International plc.A patent covering the First DefenseP has been granted. DISCLAIMER: Information and data contained in this manual is exclusively for the purpose of assisting in the operation and maintenance of Hydro International plc's First Defense.No warranty is given nor can liability be accepted for use of this information for any other purpose. Hydro International plc has a policy of continuous product development and reserves the right to amend specifications Without notice. Hydro International(Stormwater),94 Hutchins Drive, Portland ME 04102 Tel: (207)756-6200 Fax:(207)756-6212 Web:www.hydro-int.com First DefenseO operation and Maintenance Manual NI IlulmmupN IINNRN)Ju IpNmllulbq a ummmu mmmml Nwwwwxwx 0V� VI�. N% III pl ICI ' N )Ippnwuwww. EW pmwuww oaw mmupu�, I,.I � I�,.. ummmVllI., lluu���", ummmmiom�o I'� QV a nmm� ��p� IV4�� uu �u � ulll�l fl'waa0�� QU � V�Iu,!�� 1 � wwNlullllmmn VIVA i uwoiwuwwlulw "�IBlulululu10 .III IVIVI. o,'�N �ImlululullllulNmc'II IVIIoauuotltlPw Hydro International has been engineering stormwater treatment systems for over 30 years.We understand the mechanics of remov- ing pollutants from stormwater and how to Deep systems running at an optimal level. L II I I�I�IIIIIIIII ..wu.wn..mvmvww �, lllp E mmNn �uuummuwVxI �II l wwu'ww IIIIIIN IlNuuuw�'ar L I� lima I �/i i ;✓i/,,;". ,, „,,., �,„ i III III I � I"II'���, IIII��� ""III Nl ml as wlll�w ��VIVI �NVIUImVIIVVI I�I !�'� w� "Yo Sanitation services providers not intimately familiar with stormwater r„ treatments stems are at risk of the following: ��//" lul is I I I I,(pll�lorll I�II� Inadvertently breaking arts or failing to cleantre face system compo- nents,appropriately. Charging you for more frequent maintenance because they lacked the tools to service your system properly in the first place. Billing you for replacement parts that might have been covered under your hydro warranty plan II I� I Charging for maintenance that may not yet have been required. LEAVE THE r '� °`"�'� uuuu�uuuuuuuuuuuuuuuuuuuu VIVORK DIR111111111111Y TO US uuulullm""""uVVVVVVV VV V i (i Trash, sediment and polluted water is stared inside treatment systems until they are removed by our team with a vactor truck. Sometimes teams must physically enter the system chambers Iltlllll `ruuuuuuuuuuuuuuu�Qgiiii I I ��f ii�{Si��,I i� IpVVVV II +I � in order to prepare the system for maintenance and install any replacement parts. Services include but are not limited to: �; I I�li�nll uuuuuuuuuuuuuuuuuuuuuuuuuu Solids s removal •Removal of liquid pollutants % r Replacement media installation(when applicable) f 1 r i i Hydro intemationarl( torrnwater),94 Hutchins Drive, Portland ME 04102 Tel:(2 7)7 6-r200 Fax: (207)7 6-62'12 Web.- w.hydro-int.com First DefenseP Operation and Maintenance Manual IIII III ��, �I ��� Vmmmmmo ���� � � �� m llllj �I@llltlp� own, 1611109 moo Not all vactor trucks are created equal.Appropriate tools and suction power are needed to service stormwater systems appropriately. Companies who don't specialize in stormwater treatment won't have the tools to properly clean systems or install now parts. 91 SERVICE 610� muuu IUD Make sure you're not paying for service that is covered under your warranty plan.Only Hydro International's service teams can'identify tune-ups that should be on us,not,you. I 1, 1 hi If, (STEPAS SERVICED BY 1'1­11"Y`IDRO�,", •Stormwwater filters •Stormwater separators •Baffle boxes •Biofilters/biorention systems •Storage structures Catch basins Stormwater ponds o Permeable pavement Y11 Page 13 First DefenseO Operation and Maintenance Manual JIMIR,�1010411 or 11[101111111� 110 1111 II IIII6�III�VIN6I" ID el f`i:: HIM IINUIIIIIO ro IIOIVIINIVI r III t li� LIJ Ct il,,,10 1`1111111 Ap, �H�'caIH11011 I S The First DefenseO is an enhanced vortex separator *Stormwater treatment at the point of entry into the drainage line that combines an effective and economical stormwater *Sites constrained by space,topography or drainage profiles treatment chamber with an integral peak flow bypass. It with limited slope and depth of cover efficiently removes total suspended solids (TSS), trash and •Retrofit installations where stormwater treatment is placed on or hydrocarbons from stormwater runoff without washing out tied into an existing storm drain line previously captured pollutants.The First DefenseO is available •Pretreatment for filters, infiltration and storage in several model configurations (refer to Section 11. Model Sizes & Configurations, page 4) to accommodate a wide range of pipe sizes, peak flows and depth constraints. oi(� NII ID *Inlet options include surface grate or multiple inlet pipes *Integral high capacity bypass conveys large peak flows without the need for"offline"arrangements using separate junction manholes The First Defens&operates on simple fluid hydraulics. It is self- *Proven to prevent pollutant washout at up to 500%of its activating,has no moving parts,no external power requirement treatment flow and is fabricated with durable non-corrosive components. & Long flow path through the device ensures a long residence No manual procedures are required to operate the unit and time within the treatment chamber, enhancing pollutant settling maintenance is limited to monitoring accumulations of stored *Delivered to site pre-assembled and ready for installation pollutants and periodic clean-outs. The First DefenseO has been designed to allow for easy and safe access for inspection, monitoring and clean-out procedures. Neither entry into the unit nor removal of the internal components is necessary for maintenance,thus safety concerns related to confined-space- entry are avoided. 10 The internal components of the F i rst DefenseO have been ........ Auk designed to optimize pollutant capture. Sediment is captured and retained in the base of the unit, while oil and floatables, are stored on the water surface in the inner volume(Fig.1). The pollutant storage volumes are isolated from the built-in Max Oil Storage Depth bypass chamber to prevent washout during high-flow storm events. The sump of the First Defense' retains a standingGIs. �iIy.aS water level between storm events. This ensures a quiescent "Al flow regime at the onset of a storm, preventing resuspension and washout of pollutants captured during previous events. III Sediment ediment Accessories such as oil absorbent pads are available for Storage enhanced oil removal and storage. Due to the separation of the oil and floatable storage volume from the outlet, the potential for washout of stored pollutants between clean-outs Fig.I Pollutant storage volumes in the First Defens&. is minimized. Page 14 First DefenseO Operation and Maintenance Manual IS 1111610 The First Defense inlet and internal bypass arrangements are available in several model sizes and configurations.The components of the First Defense-411C and First DefenseO-611C have modified geometries as to allow greater design flexibility needed to accommodate various site constraints. All First DefenseO models include the internal components that are designed to remove and retain total suspended solids (TSS), gross solids, floatable trash and hydrocarbons (Fig.2a - 2b). First Defense"model parameters and design criteria are shown in Table 1. 1. Built-in Bypass 4. Floatables Draw-off Port 7. Sediment Storage 2. Inlet Pipe 5. Outlet Pipe 8. Inlet Grate or Cover 3. Inlet Chute 6. Floatables Storage (not pictured),,,o b. Iff Fig.2a)First DefenseO- an efense0-6;b)First Defens&-4HC and First Defenseo-6HC bypass and larger maximum pipe diameter. with higher capacity dual intemal iiiiiiiii IN 0 7 FD-3HC 3 0.9% 0.84 2V-1 1.60/45.3 15/424 18/457 126/473 0.4/ .3 2.0-3.5 0.6-1.0 3.71/1.13 FD-41I 4/1.2 1.50 142.4 1.88/50.9 18/510 24/600 2.3-3.9/0.7-1.2 4.97/1.5 FD-51I 511.5 2.34/66.2 2.94182.1 20/566 24/609 300/1135 1.1/.84 2.5-4-5/0-7-1.3 5.19/1-5 FD-6HC 6/1-8 �3.38/9! 4.73/133.9 32/906 30/750 496/I t878 1.611.2 3.0-5.1/0.9-1.6 5.97/1.8 _­_M��_ -.1 ff .- FD-81I 8/2.4 6.00 f 169.9 7.52/212.9 50/1,415 48/1219 112014239 2-8/2.1 3.0-6.0/0-9-1.8 7.40/2.2 WINNI(Iffliii 'Contact Hydro International when larger pipe sizes are required. 2Contact Hydro,International when custom sediment storage capacity is required. Winimum distance for models depends on pipe diameter. Hydro International(Stormwater), 94 Hutchins Drive,,Portland ME 04102 Tel:(207)756-6200 Fax:(207)756-6212 Web:www.hydro-int.com Page 15 First DefenseO Operation and Maintenance Manual 111100MI JONI AN lhouf 1III The First Defense protects the environment by removing a wide range of pollutants from stormwater runoff. Periodic removal of these captured pollutants is essential to the continuous,long-term functioning of the First DefenseP. The First Defens&will capture and retain sediment and oil until the sediment and oil storage volumes are full to capacity. When sediment and oil storage capacities are reached,the First Defense"will no longer be able to store removed sediment and oil. Maximum pollutant storage capacities are provided in Table 1. The First Defense"allows for easy and safe inspection,monitoring and clean-out procedures. A commercially or municipally owned sump-vac is used to remove captured sediment and floatables. Access ports are located in the top of the manhole. Maintenance events may include Inspection,Oil&Floatables Removal,and Sediment Removal. Maintenance events do not require entry into the First DefenseO, nor do they require the internal components of the First Defens&to be removed. In the case of inspection and floatables removal,a vactor truck is not required. However, a vactor truck is required if the maintenance event is to include oil removal and/or sediment removal. t 110�1 �rIp 1 111,1 u9pI V1110% The internal components of the First Defense0-HD have a centrally located circular shaft through which the sediment storage sump can be accessed with a sump vac hose.The open diameter of this access shaft is 15 inches in diameter(Fig.3).Therefore,the nozzle fitting of any vactor hose used for maintenance should be less than 15 inches in diameter. 15-in Maintenance Access Fig.3 The central opening to the sump of the First DefenseO-HC is 15 inches in diameter. The frequency of clean out is determined in the fie Id after installation. During the first year of operation,the unit should be inspected every six months to determine the,rate of sediment and floatables accumulation. A simple probe such as a Sludge-Judgelo can be used to determine the level of accumulated solids stored in the sump. This information can be recorded in the maintenance log(see page 9)to establish a routine maintenance schedule. The vactor procedure,including both sediment and oil/flotables removal,for a 6-ft First Defens&typically takes less than 30 minutes and removes a combined water/oil volume of about 765 gallons. 0 G Page 16 First Defense'Operation and Maintenance Manual "L Setup any necessary safety equipment around the access part or grate of the First tefens as stipulated by local ordinances. Safety equipment should notify passing pedestrian and road traffic that work is being done. 2. Remove the grate or lid to the manhole. o66% i 3 'without entering the vessel, look down into the chamber to inspect the inside. Make note of any irregularities. Fig-4 shows the standing water level that should be observed. r 4. Without entering the vessel, use the pole with the skimmer net to remove f oatables and loose debris from the components ,and water surface. '��������ism° rii I . Using a sediment probe such as a Sludge Judge',,measure the depth of sediment that has collected in the sump of the vessel. I% l 6a, On the Maintenance Log(see page g),record the date, unit i location,estimated volume of floatables and gross debris removed,,and the depth of sediment measured. also note i any apparent irregularities such as damaged components or blockages. D Securely replace the grate or lid. 8. Take down safety equipment. 3l Notify Hydro International of any irregularities noted during inspection. Fig.4 F"loa table s are removed with a vacfor hose(First Defense model FD-4,shown). [ N Nly f N UV npG1 yWM1OIu 4m\m P II a6 y qIN I V°It p \ptr. i 1 V 0°\ �� pu pp u\ i l IU 11 GV OI o iome 'moim\\ :m\\.0 oum^°I \: u6mum0 \uo\ilp n �ii oiuu �V o �m Floatables clean out is typically done in conjunction with �xn��h "b��U nt(p•v„m�1V h 6\v i \� \am '6d�� q sediment removal. A commercially or municipally owned scamp- 0 SafetyEquipment vac is used to remove captured.sediment and floatables( g Fi . ). qu pment(traffic cones, etch �Floatables and loose debris can also be netted with a skimmer 'row bar or other tool to remove grate or lid ,and pole. The access port located at the top of the manhole Pole with skimm er or net(if only f1oatables are being removed provides unobstructed access for a vactor hose and skimmer pole to be lowered to the base of the sump, Sediment probe i p be such as a Sludge Judge } Ig Vactor truck(flexible hose recommended) Floatables and spa clean out are typically conducted once a year during;any season. First Defense*Maintenance Log Floatables,and sump clean out should occur as soon as possible following a spill in the contributing drainage area. Hydro International Stormwater,94 Hutchins Drive,Portland ME 04102 Tel. 07 75 - Fax: 207 75 - 212 Web.-www.hydro-int.com Page 17 First DefenseO Operation and Maintenance Manual I............ ,"I Set up any necessary safety equipment around the access port or grate of the First DefenseO as stipulated by local ordinances.Safety equipment should notify passing pedestrian and road traffic that work is being done. Remove the grate or lid to the manhole. Without entering the vessel, look down into the chamber to inspect the inside. Make note of any irreguladfies. oll�,,., Remove oil and floatables stored on the surface of the water with the vactor hose(Fig.5)or with the skimmer or net(not pictured). Using a sediment probe such as a Sludge JudgeO, measure the depth of sediment that has collected in the sump of the vessel and record it in the Maintenance Log(page 9). 1�5iIi,i Once all floatables have been removed,drop the vactor hose to the base of the sump. Vactor out the sediment and gross debris off the sump floor(Fig.5). "i". Retract the vactor hose from the vessel. 8. On the Maintenance Log provided by Hydro International, record the date, unit location,estimated volume of floatables and gross debris removed,and the depth of sediment measured. Also note any apparent irregularities such as damaged components, blockages,or irregularly high or low water levels. Fig 5 Se dim ent is remo ve d with a va ctor h ose(First De fe ns e model FD-4.shown). 11, Securely replace the grate or lid. 1�10 It a Glance a a Inspection -Regularly during first year of installation -Every 6- rIths after the first year of installation ..........I.I.AN", 11111,01­,W Oil and Floatables -Once per year,with sediment removal Removal -Following a spill in the drainage area Sediment Removal -Once per year or as needed - Following a spill in the drainage area NOTE: For most clean outs the entire volume of liquid does not need to be removed from the manhole. Only remove the first few inches of oils and floatables from the water surface to reduce the total volume of liquid removed during a clean out. NOW mmiiiiiiiiiiiiiiiiiiiillillillilI I F1 yd 10 Internia"It"i lal 1111011 A 01 fE)"i s,e" I�i is,,t HYDRO INTERNATIONAL REFERENCE NUMBER: I I MUNN ................................................ SITE NAME: ................................................... .................. SITE LOCATION: ............................................. CONTRACTOR: OWNER: '�71 ................ ..................j I.............. ............ ------ ...................................... .................. .................................................... CONTACT NAME: CONTACT NAME: ..................�jmJfimjffiffi"j'hj.................................................... ................ ........ W f COMPANY NAME: COMPAN"Y NAME: ................................... .................................... hwhhhhhM ................................................. ........... ADDRESS: ADDRESS: 'hj'hj........... .......... -impi TELEPHONE: TELEPHONE: .................................................... fil hm .......................................... pwmfw�' L' F A X: FAX: INSTALLATION DATE-. MODEL SIZE(CIRCLE ONE), FD-4 FD-4HC FD-6 FD-6HC INLET(CIRCLE ALL THAT APPLY): GRATED INLET(CATCH BASIN) INLET PIPE (FLOW THROUGH) Hydro International(Stormwater),94 Hutchins Drive, Portland ME 04102 Tel:(207)756-6200 Fax:(207)756-6212 Web:www.hydro-int.com Yd.I . r. 0 II jjj�1111111111 ter,%tarl''Ilice Ic, 111oll"id h4ailln, st D e seo ii[NI11000 , IN Date Initials Depth of Sediment Volume of Site Activity and Floatables Depth Sediment Comments and Oils Measured Removed 1,160 Kq—,,�.., —.........................................................I"I Date T"wDer' me 0 7, 1 ni,t i lowl"No�Soeldu im ent F .................. .................................I 1,111011~4I�bfj .......................I ...................... ...................... ................. ....................................1 —111.....................................1.I. ...............IYA"Al ......................... ............. —111—ff ...0004)N1 �, �....... ....................1, ............................ ............... A.................. ................ I.............1,1 ............... ...................I. ...............YA .......... ...............................I Hydro International(Stormwater),94 Hutchins Drive, Portland ME 04102 Tel: (207)756-6200 Fax: (207)756-6212 Web:www.hydro-int-com ..ro 'yrn iaii'iiial IL CIA 1, ('8�88) 382,001"71808 TO, SCII-1-1EDULE AN �\�i,"""m",vvater S011111flor�is & ..................... ..................................................................................................................................... 94 Hutchins Drive Portland, ME 04102 Tel: (207)756-6200 Fax:(207)756-6212 stormwaterinquiry@hydro-int.com Turning Water Around,.