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Home My WebLink About2016/06/21 - Revised Operation & Maintenance Plan - 384 Osgood Street Engineering 100 TradeCenter,Suite G700 L NDEN Woburn, MA 01801-1851 Partners LLC Tel: (781)933-3711 Fax: (781)287-1277 7 Email:lep@lindeneng.com Operation And Maintenance Plan Town Of North Andover Department Of Public Works Improvements To The Public Works Building 384 Osgood Street, North Andover, MA May 27, 2016, Revised June 14, 2016 and June 21, 2016 In accordance with the Stormwater Management Policy issued by the Department of Environmental Protection (DEP), Linden Engineering Partners, LLC has prepared the following Operation and Maintenance Plan for the Improvements To The Public Works Building project. This plan is devoted to the post-construction operation and maintenance and is supplemental to the existing plan entitled, "Stormwater Pollution Prevention Plan For the Department of Public Works Facility, 384 Osgood Street, 225073.08, North Andover, MA" prepared by Woodard and Curran dated June 29, 2012." All of the contents of the SWPPP are incorporated herein by reference. Basic Information Owner:Town of North Andover Department of Public Works Contact: Mr. Bruce D. Thibodeau P.E., Director Address: 384 Osgood Street City: North Andover, MA 01950 Good Housekeeping BMP's (Construction and Post Construction Periods) The following good housekeeping practices will be followed onsite during and after the construction project: • An effort will be made to store only enough materials required for the immediate needs of the Department. All materials stored onsite will be stored in a neat, orderly manner in their appropriate containers and, if possible under a roof or other enclosure • Materials and Products will be kept in their original containers with the original manufacturer's label • Substances will not be mixed with one another unless recommended by the manufacture • Whenever possible, all of a product will be used up before disposing of the container • Manufacturer's recommendations for proper use and disposal will be followed • The site superintendent will inspect daily to ensure proper use and disposal of materials Material Handling and Waste Management Hazardous Products: These practices will be used to reduce the risks associated with hazardous materials. Material Safety Data Sheets (MSDSs) for each substance with hazardous properties that is used on the job site will be obtained and used for the proper management of potential wastes that may result from these products. An MSDS will be posted in the immediate area where such product is stored and/or used and another copy of each MSDS will be maintained in the SWPPP file at the job site construction trailer office. Each employee who Civil—Environmental Engineering including Storm water,Wastewater,Water Supply, Highway&Infrastructure Design Land Planning, Land Subdivision,Site Design, Environmental Permitting,Wetlands Permitting&Land Development Permitting Operation And Maintenance Plan, Town Of North Andover Department Of Public Works Improvements To The Public Works Building, 384 Osgood Street, North Andover, Ma May 27, 2016, Revised June 14, 2016 and June 21, 2016, Page 2 of 6 must handle a substance with hazardous properties will be instructed on the use of MSDS sheets and the specific information in the applicable MSDS for the product they are using, particularly regarding spill control techniques. • Products will be kept in original containers unless they are not re-sealable • Original labels and material safety data will be retained; they contain important product information • If surplus product must be disposed of, manufacture's or local and State recommended methods for proper disposal will be followed Hazardous Waste All hazardous waste material will be disposed of by the Department in the manner specified by local, state, and/or federal regulations and by the manufacturer of such products. Site personnel will be instructed in these practices by the job site superintendent, who will also be responsible for seeing that these practices are followed. Solid and Construction Wastes All waste materials will be collected and stored in accordance with state and federal law in an appropriately covered container and/or securely lidded metal dumpster. All trash and construction debris from the site will be deposited in the dumpster. No construction waste materials will be buried on site. All personnel will be instructed regarding the correct procedures for waste disposal. All waste dumpsters and roll-off containers will be located in an area where the likelihood of the containers contributing to storm water discharges is negligible. If required, additional BMPs must be implemented, such as sandbags around the base, to prevent wastes from contributing to storm water discharges. Sanitary Wastes All sanitary waste will be collected from the portable units a minimum of three times per week by a licensed portable facility provider in complete compliance with local and state regulations. All sanitary waste units will be located in an area where the likelihood of the unit contributing to storm water discharges is negligible. If required, additional BMP's must be implemented, such as sandbags around the base, to prevent wastes from contributing to storm water discharges. Vehicle and Equipment Fueling There is a previously established vehicle fueling area at the rear of the site. The fueling area will be inspected and cleaned weekly. Operation And Maintenance Plan, Town Of North Andover Department Of Public Works Improvements To The Public Works Building, 384 Osgood Street, North Andover, Ma May 27, 2016, Revised June 14, 2016 and June 21, 2016, Page 3 of 6 Spill Prevention and Control Plan The Department will train all personnel in the proper handling and cleanup of spilled materials. No spilled hazardous materials or hazardous wastes will be allowed to come in contact with storm water discharges. If such contact occurs, the storm water discharge will be contained on site until appropriate measures in compliance with state and federal regulations are taken to dispose of such contaminated storm water. It shall be the responsibility of the site superintendent to properly train all personnel in spill prevention and clean up procedures. In order to minimize the potential for a spill of hazardous materials to come into contact with storm water, the following steps will be implemented: 1. All materials with hazardous properties (such as pesticides, petroleum products, fertilizers, detergents, construction chemicals, acids, paints, paint solvents, cleaning solvents, additives for soil stabilization, concrete curing compounds and additives, etc.) will be stored in a secure location, with their lids on, preferably under cover, when not in use. 2. During construction, liquid petroleum products and other hazardous materials with the potential to contaminate groundwater may not be stored or handled in areas of the site draining to an infiltration area, An "infiltration area" is any area of the site that by design or as a result of soils, topography and other relevant factors accumulates runoff that infiltrates into the soil. Dikes, berms, sumps, and other forms of secondary containment that prevent discharge to groundwater may be used to isolate portions of the site for the purposes of storage and handling of these materials 3. The minimum practical quantity of all such materials will be kept on the site at all times. 4. A spill control and containment kit (containing, for example, absorbent materials, acid neutralizing powder, brooms, dust pans, mops, rags, gloves, goggles, plastic and metal trash containers, etc.)will be provided at the storage site. Catch basin inlet cover blankets and inflatable pipe plugs will be used to seal the openings in the outlet pipes and isolate product in the drainage system should a spill occur. 5. Manufacturer's recommended methods for spill cleanup will be clearly posted and site personnel will be trained regarding these procedures and the location of the information and cleanup supplies. In the event of a spill, the following procedures should be followed: 1. All spills will be cleaned up immediately after discovery. 2. The spill area will be kept well ventilated and personnel will wear appropriate protective clothing to prevent injury from contact with the hazardous substances. 3. The project manager and the Engineer of Record will be notified immediately. Operation And Maintenance Plan, Town Of North Andover Department Of Public Works Improvements To The Public Works Building, 384 Osgood Street, North Andover, Ma May 27, 2016, Revised June 14, 2016 and June 21, 2016, Page 4 of 6 4. Spills of toxic or hazardous materials will be reported to the appropriate federal, state, and/or local government agency, regardless of the size of the spill. 5. If the spill exceeds a Reportable Quantity, MADEP must be notified and provided with a description of the release, the circumstances leading to the release, and the date of the release and all abatement and followup measures implemented. The site superintendent will be the spill prevention and response coordinator. He will designate the individuals who will receive spill prevention and response training. These individuals will each become responsible for a particular phase of prevention and response. The names of these personnel will be posted in the material storage area and in the office trailer onsite. Allowable Non-Stormwater Discharge Management Certain types of will be allowed under the conditions that no pollutants will be allowed to come into contact with the water prior to or after its discharge. The control measures that have been outlined previously in this O & M Plan will be strictly followed to ensure that no contamination of these non-stormwater discharges takes place. The following non-stormwater discharges that may occur from the site include: • Discharges from fire-fighting activities • Fire Hydrant flushings • Waters used to wash vehicles where detergents are not used • Water used to control dust in accordance with off-site vehicle tracking • Potable water including uncontaminated water line flushings • Routine external building wash down that does not use detergents • Pavement wash waters where spills or leaks of toxic or hazardous materials have not occurred (unless all spilled material has been removed) and where detergents are not used • Uncontaminated air conditioner compressor condensate • Uncontaminated ground water or spring water • Foundation or footing drains where flows are not contaminated with process materials such as solvents • Uncontaminated excavation dewatering • Landscape irrigation Post-Construction BMP's Several types of structural and non-structural water quality controls in various combinations are proposed to treat stormwater generated on the site. These measures include deep sump catch basins with hoods and stormwater treatment units. These Water quality treatment measures will result in the removal of a minimum of 80 percent of the total suspended solids (TSS) load in runoff prior to discharge from the site, consistent with DEP's TSS removal standard. Operation And Maintenance Plan, Town Of North Andover Department Of Public Works Improvements To The Public Works Building, 384 Osgood Street, North Andover, Ma May 27, 2016, Revised June 14, 2016 and June 21, 2016, Page 5 of 6 The following best management practices are specified in the proposed development program to mitigate the increase in stormwater runoff from the site. B M Ps Used ❑ Drainage Inlet with Deep Sump ❑ Stormceptor Proprietary Treatment Unit Post-Development Activities 1. Paved Areas: Paved Areas shall be mechanically swept during the dry weather to remove excess sediments, thereby reducing the amount of sediments that the drainage system will have to remove from the runoff. Paved areas shall be mechanically swept a minimum of once each year (in the spring). 2. The use of salt or chemicals for de-icing on the paved areas during the winter months shall be limited to the amount necessary to maintain pedestrian and vehicle safety. 3. Catch Basins with Deep Sump and Hood: The catch basins shall be inspected at least four times/year and at the end of the snowfall and foliage seasons to verify that the inlet openings are not clogged by debris. Debris shall be removed from the inlet grates and disposed of properly. The catch basin sumps shall also be inspected a minimum of four times per year and shall be cleaned whenever the depth of the sediment is 25% or more of the sump depth or at least a minimum of twice per year. Material shall be removed from the catch basin sumps shall be disposed of in accordance with all applicable regulations. 4. The Stormceptor Stormwater Treatment Unit shall be inspected and cleaned with a vacuum truck a minimum of four times per year for the first year and cleaned with a vacuum truck a minimum of two times per year every year after the first year of operation. Cleaning shall be in strict conformance with the manufacturer's recommendations which are attached to this report. All maintenance responsibilities as identified within this document will be owned and maintained by the owner of the property and shall run with the title of the property. Snow Management Snow storage for the site to be located on the site on pavement upgradient of the stormwater treatment system. All drainage structures are to be kept clear of snow. Excess snow should be removed from the site Operation And Maintenance Plan, Town Of North Andover Department Of Public Works Improvements To The Public Works Building, 384 Osgood Street, North Andover, Ma May 27, 2016, Revised June 14, 2016 and June 21, 2016, Page 6 of 6 Annual Operating Budget The estimated annual operating budget for the O & M Plan for the base bid project is $ 750. The estimated annual operating budget for the O & M Plan for the bid alternate project is $ 1,250. Plan of BMP's Reference is made to the attached schematic for the location of all BMP's. Conclusion The construction of the proposed site development as proposed will provide runoff control for the completed development as required by the MADEP Stormwater. For additional requirements see the existing SWPPP entitled, "Stormwater Pollution Prevention Plan For the Department of Public Works Facility, 384 Osgood Street, 225073.08, North Andover, MA" prepared by Woodard and Curran dated June 297 2012." All of the contents of the SWPPP are incorporated herein by reference. X:\Linden Engineering\Projects\North Andover MA-CSS Architects-NADPW Administration Building-LEP J0B#16020\Permits\NOI\NADPW NOI -Peer Review Response Letter-6-14-2016.doc OPERATION AND MAINTENANCE PLAN REPORT Project: North Andover DPW Facility Date: Location: 384 Osgood Street, North Andover, MA Structure or Task Inspection Inspection Performed Method Notes/Remarks Schedule Date By: March Catch Basins June Clam shell or vacuum sumps Clean when sediment is 12"deep or a minimum of twice/year September December March vacuum oil and solids per Clean at each inspection. Reduce to bi- TSS Removal Systems June manufacturer's annual (twice per year) inspections and September recommendations cleaning after first year of operations December Party responsible for O & M Plan: Name Town of North Andover DPW Address 384 Osgood Street, North Andover, MA 01854 Contact Mr. Bruce D. Thibodeau, P.E. 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