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HomeMy WebLinkAboutOperation & Maintenance Plan 7-21-2010 - OPERA TION & MAINTENANCE PLAN And L ONG TERM POLLUTION PREVENTION PLAN For a STORM WATER MANAGEMENT SYSTEMS Map 34 Lot 7 1503 Osgood Street _ North Andover, MA 01845 f Prepared For: Hera Development Corp. 470 Washington Street Brighton, MA 02135 f May 24, 2010 Revised: rune 28,2010 Revised: July 16,2010 Revised: July 21, 2010 MEMW MHF Design Consultants, Inc. ENGINEERS - PLANNERS • SURVEYORS 44 Stiles Road . Suite One ° Salem, NM 03079 TEL (603) 893•-0720 - FAX (603) 893-0733 www.mhfdesign.com I MHF Project #271710 _l MHF Design Consultants, Inc. OPERATION & MAINTENANCE PLAN AND LONG TERM POLLUTION PREVENTION PLAN The Stormwater Policy developed by the Massachusetts Department of Environmental Protection and Office of Coastal Zone Management requires that an Operation and Maintenance Plan (O&M) and a Long Term Pollution Prevention Plan (LTPPP) be submitted for review and approval. As suggested in the Stormwater Handbook these plans have been combined to provide one focal point for the control of stormwater quality and quantity from the site. The plans shall include the parties responsible for scheduling inspections and maintenance, routine and non-routine maintenance tasks, nutrient source control procedures and provisions for appropriate access and maintenance casements surrounding controls and extending to the public right-of-way. The owner of record shall be responsible for the installation, operation, and maintenance of all stormwater management systems after construction and for the implementation of the LTPPP. Logs of inspections and cleanings shall be maintained by the owner of record and annual BMP inspection forms shall be filed with the Town of North Andover Conservation Commission, Submittals to the Conservation Commission shall be made, for at least one (1)year after the issuance of the occupancy permit, or until deemed necessary by the Town. Copies will need to be kept for the most recent three years and made available to the Planning Board and Conservation Commission upon request. An annual summary (in log form) of the Inspection and Maintenance performed on site shall also be included as part of the submittal to the Conservation Commission, Operation and Maintenance Plan: Documentation: A maintenance log shall be kept summarizing inspections, maintenance and any corrective actions taken. The log shall include the date on which each inspection or maintenance task was performed, a description of the inspection findings or maintenance completed, and the name of the inspector or maintenance personnel performing the task, If a maintenance task requires the clean out of any sediments or debris, the location where the sediment and debris was disposed after removal will be indicated. Disposal of the accumulated sediment and hydrocarbons must be in accordance with applicable local, state, and federal guidelines and regulations. The logs shall be made accessible to department staff and a copy provided to the department upon request. Inspection and Maintenance Frequency and Corrective Measures: The following areas, facilities and measures will be inspected and the identified deficiencies will be corrected, Clean out must include the removal and legal disposal of any accumulated sediments and debris and disposed of in accordance with applicable local, state, and federal guidelines and regulations. 1. Street Sweenin� Sweeping should be conducted a minimum of once per month (primarily during spring and fall). Sweeping shall be done once in the early fall and then immediately following spring snowmelt to remove sand and other debris. Pavement surfaces shall be swept at other times such as in the fall after leaves have dropped to remove accumulated debris. Since contaminants typically accumulate within 12 inches of the curbline, street cleaning operations should concentrate in cleaning curb and YA2717101Drainage\Revised 7-21-10\271710 O&M-LTPPP Repod.Doc 2 I � � ■WIC A MHF Design Consultants, Inc. gutter lines for maximum pollutant removal efficiency. Other areas shall also be swept periodically when visual buildup of debris is apparent. Once removed from paved surfaces, the sweeping must be handled and disposed of properly. In accordance with MassDEP's Bureau of Waste Prevention, the reuse and disposal of sweepings can be used in three ways: In one of the ways already approved by MassDEP (e.g. daily cover in a landfill, additive to compost, fill in a public way); if approved under a Beneficial Use Determination; disposed in a landfill. 2. Deep Sump Hooded Catch Basins Inspect catch basins at least 4 times per year and at the end of the foliage and snow removal seasons (preferably in spring and fall) to ensure that the catch basins are working in their intended fashion and that they are free of debris. Sediment must also be removed 4 times per year of whenever the depth of deposits is greater than or equal to one half the depth form the bottom of the invert of the lowest pipe in the basin. If the basin outlet is designed with a hood to trap floatable materials check to ensure watertight seal is working. At a minimum, remove floating debris and hydrocarbons at the time of the inspection. Sediment and debris can be removed by a clamshell bucket; however a vacuum truck is preferred. A vacuum truck must be used at a minimum of once per year for sediment removal. Disposal of the accumulated sediment and hydrocarbons must be in accordance with applicable local, state, and federal guidelines and regulations. 3. Vegetated Areas Inspect slopes and embankments early in the growing season to identify active or potential erosion problems. Replant bare areas or areas with sparse growth. Where rill erosion is evident, armor the area with an appropriate lining or divert the erosive flows to on-site areas able to withstand the concentrated flows. 4. Subsurface Infiltration System A system should initially be inspected within the first three months after completion of the site's construction. Preventive maintenance should be performed at least every six months and sediment shall be removed from pretreatment BMP's after every major storm event. The Infiltration System shall be inspected on regular bi-annual scheduled dates. During the first year of operation, the system shall be inspected after at least two large storm events (> I inch) to ensure that it is fully drained within 72 hours, If standing water is present more than 72 hours after a rainfall event, the infiltration system shall be cleaned. Ponded water in the system indicates potential infiltration failure in the bottom of the pipe and/or stone. In this case, accumulated sediment shall be removed from the bottom utilizing water jets and/or truck mounted vacuum equipment. Sediment and debris removal should be through the use of truck mounted vacuum equipment. Outlet pipes should be flushed to point of discharge on the same frequency as mentioned above. Disposal of the accumulated sediment and hydrocarbons must be in accordance with applicable local, state, and federal guidelines and regulations. ,The following is the recommended procedure to inspect the underground system in service: 1. Locate the riser or cleanout section of the system. The riser/cleanout will typically be 6 or 12" in diameter or larger. YA2717101Drainage\Revised 7-21-M271710 O&M-LTPPP Report.Doc 3 MHF Design Consultants, Ina. 2. Remove the lid from the riser/cleanout. 3, Measure the sediment buildup at each riser and cleanout location. Only certified confined space entry personnel having appropriate equipment should be permitted to enter the system. 4. Inspect each manifold, all laterals, and outlet pipes for sediment build up, obstructions, or other problems. Obstructions should be removed at this time, 5. If measured sediment build up is between 2" to 8", cleaning should be considered; if sediment build up exceeds 8", cleaning should be performed at the earliest opportunity. A thorough cleaning of the system (manifolds and laterals) shall be performed by water jets and/or truck mounted vacuum equipment. Pretreatment BMP's shall be inspected and cleaned during the regular bi-annual inspections. Clearing Inlets and Outlets: The inlet and outlet of the Infiltration System should be checked periodically to ensure that flow structures are not blocked by debris, All pipes connecting the structures to the system should be checked for debris that may obstruct flow. Inspections should be conducted monthly during wet weather conditions from March to November, It is important to design flow structures that can be easily inspected for debris blockage. 5. Snow Storage and Removal Proposed snow storage areas are as shown, on the Site Plans prepared for Hera Development, and any excess snow is to be trucked offsite. During the winter months all snow is to be stored such that snowmelt is controlled. In the event the amount of snow exceeds such capacity, it is to be removed off-site. The minimum amount of deicing chemicals needed is to be used. Avoid disposing of snow on top of storm drain catch basins or in stormwater drainage swales or ditches. For questions and additional information regarding snow storage or disposal, please contact the Mass DEP's Northeast Regional Office in Wilmington at 978-694-3200. 6. Stormeentor Initial maintenance to be performed twice a year for the first year after the unit is online and operational. A vacuum buck must be used at a minimum of once per year for sediment removal. Refer to the attached Stormceptor Owner's manual for operation and maintenance procedures and schedules thereafter. Lon11 Term Pollution Prevention Plan: In accordance with DEP Stormwater Standard 44 the development and implementation of suitable practices for source control and pollution prevention shall be incorporated in a Long Term Pollution Prevention Plan (LTPPP), The primary focus of the LTPPP is to establish procedures and controls for limiting the potential sources of pollutants, including nutrients that may contribute to excessive contaminant levels in the site's stormwater runoff. To this end the following source controls and procedures will be in place at the site; • Good House Keeping — It shall be the responsibility of the property owner to keep the site clean at all times. Refuse disposal and pickup shall occur on a regular basis and all material shall be disposed of in the specified dumpster location area on the Site Development Plans. YA2717IWrainagelRevised 7-21-10\271710 O&M-LTPPP Report.Doc 4 MHF Design Consultants, Inc. • Storing Material and waste products inside or under cover — No material storage is to take place outside the proposed facility on either paved or lawn areas. All material stored on site will conform with all ,storage requirements of local, state and federal agencies. • Vehicle washing ---Vehicle washing is not allowing to take place on premises. Rinsing with a hose is allowed on impervious surfaces. • Routine inspections and maintenance of stormwater BMP's —Refer to the Operation and Maintenance procedures for each BMP as described in the O&M Plan as described herein. • Spill prevention and response — A Spill Prevention and Response Plan is incorporated for the Gas Station development. Any warehouse facility occupant maintaining hazardous material onsite will be required to maintain the material according to local, state and federal regulations and have their own Spill Prevention and Response Plan including an appropriately sized spill recovery kit and access to an emergency cleanup vendor. • Maintenance of lawns, gardens and other landscaped areas — All landscaping and maintenance to be performed by an authorized company chosen by the property owner. • Storage and use of fertilizers, herbicides and pesticides — All landscape maintenance will be conducted by an authorized company chosen by the property owner. This firm will not store any fertilizers, herbicides or pesticides on the site and will provide these materials as required by site conditions. Any application of herbicides or pesticides will be applied by a licensed applicator. • Pet waste management — Pet waste shall be disposed of in waste receptacles provided within each unit. • Operation and maintenance of septic systems —The septic system shall be maintained by the property owner or authorized representative in accordance with the approved Septic Disposal System. • Proper management of deicing chemicals and snow — Deicing chemicals and snow removal shall primarily be the responsibility of the property owner additional information can be found in the O&M Plan as described herein. • Nutrient management plan- The goal of the nutrient management plan is to minimize the potential sources of excess nutrients on the site and the release of nutrients in the stormwater from the site. This minimization relates both to infiltrated water and runoff, to general the nature of the site use will tend to reduce the nutrients in the stormwater. Further, procedures indicated above or in the O&M Plan related to pet waste disposal, septic system maintenance, deicing procedures, BMP maintenance procedures, and street sweeping will act to reduce the levels of nutrients in the stormwater, and the nutrients entering the adjacent intermittent stream and the groundwater, YA2717101DrainagelRevised 7-21-10\271710 O&M-LTPPP Report,Doc 5 271710 Stormwater Operation and Maintenance Log g Genera Informations' Project Name NPDES Tracking No. Location Date of Inspection Start/End Time Inspector's Name(s) Inspector's Title(s) Inspector's Contact Information Describe present phase of construction Type of Inspection ❑ Regular ❑Post-storm event Wekht r I &rmation Current Conditions: Do you suspect that discharges may have occurred since the last inspection? ❑ Yes ❑No Are there any discharges at the time of inspection? ❑Yes ❑ No Site-specific BMPs Temporary, BMP;Installed Cbrrect►vc Action Needed , Party.eontaeted'1 (C f►d O e.rat� Method of contact RMP Descri Lion, IProperly? A Overall Site Construction ❑ Yes ❑No Activities B Silt pence [—]Yes [--]No c Construction entrance ❑Yes ❑No D Stockpiles ❑Yes ❑No B Silt bags—on-site ❑Yes ❑ No p Temporary Dewatering Basins ❑Yes ❑No Y:12717I01Drainage\Rcvised 7-21-10\271710Inspection Log Template,doe Page 1 of 5 Permanettt I31YLP Lilsfalled; Earty eontacfed (Post Cpnstrt<ctiotx in Con ective Aciion;Needed, , Method-of.aontaot BMP Descri hurt Pro erl .? . I Street Sweeping ❑Yes ❑No • Evidence of oil grease ❑Yes ❑No 2 Deep Sump Catch Basin ❑Yes ❑No • Grates clear of debris ❑ Yes ❑No • Inlet and outlet clear of debris ❑Yes ❑No • Evidence of oil grease ❑Yes ❑No • Observance of accumulated ❑ Yes ❑No sediment • Evidence of structural ❑ yes ❑No deterioration • Evidence of spalling or ❑Yes ❑No cracking of structural parts • Evidence of flow bypassing ❑ yes ❑No facility 3 Stormeeptor ❑Yes ❑No • Grates clear of debris ❑Yes ❑No • Inlet and outlet clear of debris ❑Yes ❑No • Observance of accumulated ❑yes ❑No sediment • Evidence of oil grease ❑Yes ❑No • Evidence of flow bypassing El Yes ❑No facility 4 Stone Lined Outlet Protection ❑Yes ❑No Area • Inlet/inflow pipes clear of ❑yes ❑No debris • Overflow spillway clear of ❑Yes ❑No debris • Outlet clear of debris ❑Yes ❑No • Evidence subsidence ❑ Yes ❑No • Tree growth ❑Yes ❑No • Other(specify) ❑Yes ❑No 5 Ditches,swales&channels ❑Yes ❑No • Inlet/Outlet clear of debris ❑ Yes ❑No • Bottom surface clear of debris ❑Yes ❑No • Evidence of tilling or gullying ❑Yes ❑No • Observance of accumulated ❑yes ❑No sediment • Bottom dewaters between ❑ Yes ❑No storms • Vegetation healthy and ❑ Yes ❑No growing • Standing water or wet spots ❑ Yes ❑No • Tree growth ❑Yes ❑No • Other(specify) ❑Yes ❑ No Y:\2717J0Wrainage\Revised 7-21-10\271710Inspection LogTemplate.doc Page 2 of 5 it i I Permanent I Instahed Party contacted 7 {Past Construetion):; and Oppratiaig Corrective Action Deeded IYtetltod;oif cont et `' Bi"Descri ton. Pro erI ? . 6 Subsurface Infiltration System ❑Yes ❑No • Pipe bottom clear of debris ❑Yes ❑No • Inlet/Inflow pipes clear of El Yes ❑No debris • Overflow spillway clear of ❑ Yes ❑No debris • Outlet clear of debris ❑Yes ❑No • Observance of accumulated El Yes ❑No sediment • Other(specify) ❑Yes ❑No ADDTTIONAL`�COMMENTS YA271710I)rainagelRevised 7-21-10\271710Inspection LogTemplate.doc Page 3 of i Overall Site Issues i BM IRetivaty : implemented? Majntai CM Corrective Action': Party contacted i 011od of conta,4 1 Are all slopes and disturbed ❑Yes ❑No ❑ Yes ❑No areas not actively being worked properly stabilized? 2 Are natural resource areas ❑ Yes ❑No ❑Yes ❑No (e.g.,streams,wetlands, mature trees, etc.)protected with barriers or similar BMPs? 3 Are perimeter controls and ❑ Yes ❑No ❑Yes ❑No sediment barriers adequately installed(keyed into substrate)and maintained? 4 Are discharge points and ❑ Yes ❑No ❑ Yes ❑No receiving waters free of sediment deposits? 5 Are storm drain inlets ❑Yes ❑No ❑ Yes ❑No properly protected? b Is there evidence of ❑ Yes ❑No [—] Yes ❑No sediment being tracked into the street? 7 Is trash/litter from work ❑ Yes ❑No ❑Yes ❑No areas collected and placed in covered dumpsters? 8 Are washout facilities(e.g., ❑ Yes ❑No ❑Yes ❑No paint,stucco, concrete) available,clearly marked, and maintained? 9 Are vehicle and equipment ❑ Yes ❑No ❑Yes ❑No fueling,cleaning,and maintenance areas free of spills,leaks, or any other deleterious material? 10 Are materials that are ❑Yes ❑No ❑Yes ❑No potential stormwater contaminants stored inside or under cover? 11 Are non-stormwater ❑Yes ❑No ❑ Yes ❑No discharges (e.g.,wash water, dewatering)properly controlled? Y,127171011Mrainage\Revised 7-21-10\271710 Inspection Log Template.doc Page 4 of 5 Certification statement; "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on nay inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." Print name; Signature: Date: Copies to: ❑ Owner: ❑ Contractor: ❑ Conservation Commission: ❑ MHP Project Manager: ❑ Other: YA2717101Drainagc\Ravised 7-21-10\2717101nspection LogTemplate.doc Page 5 of 5 I I. i Sto r ce r Owner' s Manual April 2000 The StormceptorO System is protected by one or more of the following patents; Canadian Patent No. 2,009,208 Canadian Patent No. 2,137,942 Canadian Patent No. 2,175,277 Canadian Patent No. 2,180,305 Canadian Patent No, 2,206,338 U,S. Patent No. 4,985,148 U.S. Patent No, 5,498,331 U.S. Patent No. 5,725,760 U.S. Patent No. 5,753,115 U.S. Patent No. 5,849,181 U.S. Patent No. 6,068,765 Australia 693.164 Australia 707,133 New Zealand 314,646 European Paten Treaty 95 307 996.9 The Stormceptor System for it I �I Sformwater Quality /mprovement Congratulations! Your selection of a Stormceptor® System means that you have chosen the most recognized and efficient stormwater oil/sediment separator available. Stormceptor is a pollution control device that protects our lakes, rivers and streams from the harmful effects of non-point source pollution, Please address any questions or concerns regarding the Stormceptor Systems to Stormceptor Canada Inc at 1-800-565-4801 or visit our website at ivww.stormceptor,coin. What is a Stormceptor? Stormceptor is a patented water quality structure that takes the place of a conventional manhole with in a storm drain system. Stormceptor removes free oil (TPH) and suspended solids (TSS) from stormwater preventing spills and non-point source pollution fi•om entering downstream lakes and rivers. Key benefits of a Stormceptor include; • Capable of removing 50%to 80%of the total sediment load when properly applied as a source control for small areas • Removes free oil from stormwater during low flow conditions • Will not scour or re-suspend trapped pollutants • Excellent spill control device for commercial and industrial developments • Easy to maintain(vacuum truck) • STORMCEPTOR clearly marked on the cover(excluding inlet designs) • Engineered and continually tested • Vertical orientation therefore resulting in a smaller footprint Please Maintain Your Stormceptor To ensure long-term environmental protection through continual performance, Stormceptor must be maintained The need for maintenance is determined through inspection of the Stormceptor. Procedures for inspection are provided in this document, Maintenance of the Stormceptor is performed fi-om the surface via vacuum truck. , If you require a list of contacts for cleaning your Stormceptor please call one of our Stormceptor offices or your nearest Stormceptor affiliate(affiliates listed in Appendix 1). Stormceptor How does Stormceptor'Work? Stormceptor can be divided into two components; • Lower treatment chamber • Upper by-pass chamber Stormwater flows into the by-pass chamber via the storm drain pipe. Low flows are diverted into the treatment chamber by a weir and drop pipe arrangement. The treatment chamber is always full of water. Water flows up through the outlet pipe based on the head at the inlet weir, and is discharged back into the by-pass chamber downstream of the weir. The downstream section of the by-pass chamber is connected to the outlet storm drainpipe. Free oils and other liquids lighter than water will rise in the treatment chamber and become entrapped beneath the fiberglass insert since the outlet pipe is submerged. Sediment will settle to the bottom of the chamber by gravity. The circular design of the treatment chamber is critical to prevent turbulent eddy currents and to promote settling. During high flow conditions, stormwater in the by-pass chamber will flow overtop of the weir and be conveyed to the outlet storm drain directly. Water that overflows the weir creates a backwater effect on the outlet pipe (head stabilization between the inlet drop pipe and outlet riser pipe) ensuring that excessive flow will not be forced into the treatment chamber, which could scour or re-suspend the settled material. The by-pass is an integral part of Stormceptor since other oil/grit separators have been noted to scour during high flow conditions(Schueler and Shepp, 1993). Stormceptor Models and Identification Stormceptor is available in both concrete and fiberglass. Thee are currently nine different sizes available. A concrete Stormceptor is denoted by STC (e.g. STC6000) preceding the model number. A fiberglass Stormceptor is denoted by STA (e,g. STA6000)preceding the model number. In the concrete Stormceptor, a fiberglass insert separates the treatment chamber from the by-pass chamber. There is threc insert designs: the"spool", the"disc" and the"inlet". The different insert designs are illustrated in Figures 1, 2 and 3. These designs are easily distinguishable from the surface once the cover has been removed. In the "spool" design you will see one large 914 mm (36") opening in the center of the insert with two 200 mm (8") inspection ports located either vertically on the sides of the 914 mm (36") opening or horizontally on either side of the opening. There are three versions of the in-Ilne disc insert: "single inlet/outlet", "multiple inlet" and "submerged". In the "disc' design you will be able to see the inlet pipe, the drop pipe opening to the lower chamber, the weir, a 150 mm (6") oil inspection/cleanout pipe, a large 610 mrn (24") riser pipe-opening offset on the outlet side of the structure, and the outlet pipe from the unit. The weir will be around the 610 min (24") outlet pipe on the"multiple inlet" disc insert. The "submerged" disc insert has a higher weir and a second inlet drop pipe. In the "inlet" design you will be Stormceptor i able to see the 305 mm (12") inlet drop pipe and 100 mm (4") outlet riser pipe as well as a central 100mm [4"] oil inspection/cleanout port. Maintenance from the surface by vacuum ; truck. Vacuum hose h+ o ,i4 lowered through central opening in insert Spoollnsert N R b' Concrete Stormceptor Figure 1 "Spool" Insert Concrete Stormceptor 5107•mceptol� 9 Stormceptor° Affiliates CANADA FIBERGLASS Stormceptor Canada Inc. 416-626-0840/ 1-800-565-4801 Todd Neff CONCRETE Lafarge Canada Inc. 403-292-9502/ 1-888-422-4022 AB, MB,NW. ON, SK 604-502-5236 Chris Hughes BC Centennial Concrete Pipe & Products Inc. 519-622-757411-888-888-3222 Brian Lee ON L6cuyer et Fils Lt6e. 450-454-3928 R6jean Tremblay PQ Strescon Limited 902-494-7400 Andrew LeVatte NS 506-633-8877 Gary Bennett NB, PP, NF Stormceptor 1 UNITED STATICS CSR Hydro Conduit 1-800-909-7763 CSR National Stormeeptor Information AK,AL, AR, AZ, CA, CT DC, DE,FL, GA,HI, s. IL,IN, KS, KY,LA,MA,MD,ME, MI, MO,MS,NC,NE,NH, NM,NV, OK, OR,R1, SC,TN, TX,VA,VT, WA The Cretex Companies 612-441-2121 Brad Fossum MN, IA, n. IL WI Camtek Construction Products 724-327-3400 Andy Virostek NY,NJ, OH, PA, WV Carder Concrete Products 303-791-1600 Don Grzesiek CO Wyoming Concrete Products 307-265-3100 John Finch ID, MT,ND, SD, UT, WY S'tormceptor AUSTRALIA CONCRETE CSR Humes 61 7 3364-2933 Colin Roome Australia CSR Construction Materials 613 9286-2624 Keith Caporn Pacific Rim Stoi-tnceptoi- s k www.stormceptor.com storniceptor i Sediment&oil Oil removal can be removal can be performed by vacuumtruck performed by vacuum through the oil inspection 1 truck through the wa ;. cleanout pipe large outlet riser pipe Disc Insert S3 Concrete Stormceptor a xr Figure 2 Single Inlet/Outlet "Disc" Insert Concrete Stormceptor® Stormceptor i I I Inlet Grate ear i Oil Port Inlet Insert Removable Teo Maintenance Figure 3 STC 300/450 Inlet Insert Sizes/Models Dimensions of the fiberglass and concrete Stormceptor©units are provided in Table 1. Values of invert to grade are provided later in this document for your site. The total depth for cleaning will be the sum of the depth from invert to grade and invert to the bottom of the unit. Table 1. Stormceptor Dimensions Model Model Pipe Invert to Bottom of Pipe Invert to Bottom of (Metric) (US) STA Stormceptor STC Stormceptor m (in.) m (in.) 300 450 1.6 (64) 1.7 (68) 750 900 1.6 (64) 1.9 (74) 1000 1200 2.1 (81) 2.2 (86) 1500 1800 2.9 (115) 3.1 (122) 2000 2400 2.3 (89) 3.1 (122) 3000 3600 3.2 (127) 4.0 (158) 4000 4800 2.9 (113) 3.7 (146) 5000 6000 3.5 (138) 4.3 (170) 6000 7200 3.3 (128) 4.0 (158 * Depths are approximate The capacities of the different Stormceptor units are provided in Table 2. Stormceptor I Table 2. Stormee tors'Capacities Model Model Sediment Oil Total Holding (Metric) (US) Capacity Capacity Capacity L(US gal) L(US gal) L(US gal) 300 450 1275 (335) 325 (85) 1775 (470) 750 900 2460 (565) 915 (280) 4325 (950) 1000 1200 3260 (845) 915 (280) 5125 (1230) 1500 1800 5660 (1445) 915 (280) 7525 (1830 2000 2400 6150 (1345) 2945 (880) 10925 (2495) 3000 3600 10415 (2600) 2945 880) 15195 (3750) 4000 4800 14060 (3475) 3490 (1025) 20180 5020) 5000 6000 18510 (4550) 3490 (1025) 24635 (6095) 6000 7200 23445 (5425) 4150 (1100) 31210 (7415) Identification Even if you do not have plans of your storm drain system you will be able to easily identify where the inline Stormceptor unit(s) (spool or disc insert) are since the name STORMCE=PTOR is clearly embossed on the cover. You will be able to determine the location of"inlet" Stonnceptor units with horizontal catch basin inlets by looking down the grate since the insert will be visible. The name Stormeeptor is not embossed on the inlet models due to the variability of inlet grates used/approved across North America, Once you have found the unit, you may still be uncertain which model number it is. Comparing the measured depth from the water level (bottom of insert) to the bottom of the tank with Table I should help determine the size of the unit, Starting in 1996, a metal serial number tag has been affixed to the inside of the unit. The serial number has the model number written on it. If the unit does not have a serial number, or if there is any uncertainty regarding the size of the interceptor using depth measurements, please contact Stormceptor at 1 800 565- 4801 and we will help you determine the size of a particular unit. What is the Maintenance Procedure? Maintenance of Stormceptor is performed using vacuum trucks. No entry into the unit is required for maintenance of the spool insert, inlet insert or the smaller disc inserts. Entry to the level of the disc insert may be required for servicing the larger disc insert models. DO NOT ENTER THE STORMCEPTOR CHAMBER unless you have the proper equipment, have been trained and are qualified to enter a confined space, as identified by local Occupational Safety and Health Regulations (e.g. Canada Occupational Safety and Health Regulations — SOR/86-304), Without the proper equipment and training, entry into confined spaces can result in serious bodily harm and potentially death. Consult local, provincial, and/or state regulations to determine the requirements for confined space entry. Be aware that the insert may be slippery. In addition, be aware that some units do not have a safety grate to cover the outlet riser pipe that leads to the submerged, lower treatment chamber. Stormceptor The Vacuum Service Industry is a well-established sector of the service industry that cleans underground tanks, sewers and catch basins. Costs to clean a Stormceptor® will vary based on the size of unit and transportation distances. The depth of oil in the interceptor can be determined by inserting a dipstick tube in the 150 mm (6") oil inspection/cleanout pipe("disc" design), or in the 914 mm (36")central access way ("spool" design),or in the 100 mm (4")cleanout pipe ("inlet"design). Similarly, the depth of sediment can be measured from the surface without entry into the Stormceptor via a dipstick tube equipped with a ball valve (Sludge Judge). This tube would be inserted in the central opening ("spool" design) or in the 610 mm (24") opening ("disc" design), or in the 100 mm (4") cleanout pipe ("inlet" design). Maintenance should be performed once the sediment depth exceeds the guideline values provided in Table 3. For the "spool" design Stormceptor maintenance is performed through the large central 914 mm (36") diameter opening for both the oil and the sediment. In the "disc" design, oil is removed through the 150 mm (6") oil inspection/cleanout pipe and sediment is removed through the 610 mm (24") diameter outlet riser pipe. Alternatively, oil could be removed from the 610 mm (24") opening if water is removed from the lower chamber to lower the oil level to the level of the drop pipes. For the"inlet" design, maintenance is performed through the 305mm (12") inlet drop pipe for the sediment, and oil can be removed from the 100 mm (4") oil/inspection cleanout pipe. We recommend the following procedure to clean out the Stormceptor: 1. Check for oil (using a dipstick tube) 2, Remove any oil separately using a small portable pump 3. Decant the water from the unit to the sanitary sewer using a portable pump (prior approval is required from the sewer authority/municipality) 4. Remove the sludge from the bottom of the unit using a vacuum truck 5. Re-fill the Stormceptor with water where required by the local jurisdiction How Often Is Maintenance Required? Generally, annual maintenance is recommended but the required maintenance frequency will vaty with the amount of pollution on your site (number of hydrocarbon spills, amount of sediment, etc.). It is recommended that the frequency of maintenance be increased or reduced based on local conditions. If the sediment load is high, maintenance may be required semi-annually. Conversely once the site has stabilized, maintenance may be required less frequently. Maintenance should be performed immediately after an oil spill or once the sediment depth in Stormceptor reaches the value specified in Table 3 based on the unit size. In the "disc" design and "inlet" design, any potential obstructions at the inlet can be observed from the surface. The "disc" insert has been designed as a platform to facilitate maintenance of the Stormceptor and the storm drain system. Stormeeptor i Table 3. Sediment Depths Indicating Required Maintenance Model Model Sediment Depth (Metric) (US) mm(in.) 300 450 200 (8) 750 900 200 (8) 1000 1200 250(10) 1500 1800 375 (15 2000 2400 300(12) 3000 3600 425 (17) 4000 4800 375 (15) 5000 6000 450(18) 6000 7200 375 (15) What Should I do in the Event of an Oil Spill? Stormceptoro is often implemented in areas where the potential for spills is great. Stormceptor should be cleaned immediately after a spill occurs by a licensed liquid waste hauler. You should also notify the appropriate regulatory agencies as required in the event of a spill. Disposal of the Trapped Material Removed from Stormceptor The requirements for the disposal of material from Stormceptor are similar to that of any other Best Management Practices (BMP). Local guidelines should be consulted prior to disposal of the separator contents. In most areas the sediment, once dewatered, can be disposed of in a sanitary landfill. It is not anticipated that the sediment would be classified as hazardous waste, In some areas, mixing the water with the sediment will create a slurry that can be discharged into a trunk sanitary sewer. In all disposal options, approval fi-om the dsposal facility operator/agency is required, Petroleum waste products collected in Stormceptor(oil/chemical/fuel spills) should be removed by a licensed waste management company, What if I see an oil rainbow or sheen at the Stormceptor outlet? With a steady influx of water with high concentrations of oil, a sheen may be noticeable at the Stormceptor outlet. This may occur because a rainbow or sheen can be seen at very small oil concentrations(< 10 ppm). Storrrrceptor will remove over 95%of all free oil and the appearance of a sheen at the outlet with high influent oil concentrations does not mean that the unit is not working to this level of removal. In addition, if the influent oil is emulsified,the Stormceptor will not be able to remove it. The Stormceptor is designed for free oil removal and not emulsified or dissolved oil conditions. Stormceplor Appendix I Storinceptoe Affiliates Stoonceptor