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Operation and Maintenance Plan Revised 7/2/2024 <br /> A properly operating drainage system is the basis for protecting developed properties from the impacts <br /> of storm runoff and for the protection of wetland resources against pollutants carried by stormwater. If <br /> the drainage system fails to work,frequent pooling of stormwater would be expected to occur on site <br /> possibly affecting the use and activities on the property. The owner shall designate a qualified person <br /> who will be responsible for maintenance and operation of drainage system.A qualified person may <br /> consist of a registered professional or qualified personnel trained for inspecting the specific drainage <br /> components at this site. The attached training form shall be completed and signed by both the <br /> professional and trainee. <br /> The owner or designated representative shall maintain a copy of the construction drawings as means <br /> of illustration of the location of the stormwater system, or other drawings depicting the site with all <br /> components of the drainage system location. Only authorized personnel as described above by the <br /> owner shall maintain and operate the drainage system. <br /> The drainage system has been designed with consideration of the use as a commercial development. <br /> The owner or designated representative shall implement the following long-term pollution prevention <br /> measures: <br /> 1. The drainage system is intended for the interception of rainfall precipitation and snowmelt runoff. <br /> No other discharges shall be allowed within the systems unless reviewed by the appropriate trade <br /> professional for conformance with the design parameters of the system. <br /> 2. Proper site maintenance shall be performed without harming the drainage system. <br /> 3. Lawns, gardens and landscape care and maintenance clippings and refuse shall be properly <br /> disposed of. Dumping of yard waste should not be allowed within the drainage systems <br /> 4. Snow and ice shall be properly managed. Snow or ice removal shall not obstruct the stormwater <br /> inlets and outlets. <br /> 5. A contractor who specializes on spill cleanings shall be engaged in the event of spills into the <br /> drainage system. The contractor shall properly clean the affected areas and the drainage. <br /> The following inspections and maintenance procedures will be required: <br /> 1. Inspect drainage basins after every major storm event(typically a storm of one inch of rainfall) <br /> and at least four times a year. Inspection will include measuring the depth of silt and sediment <br /> collected in the stone splash areas before the stone checks. <br /> 2. All debris at the drain basin inlets shall be removed and properly disposed, clearing the entire <br /> surface of the system. Debris in the catch basin shall be removed if sump is half filled. <br /> 3. The proposed crushed stone pads should be kept cleaned by routinely removing any debris that <br /> may be collected on the surface. <br /> 4. If a depth of sediments of over 4 inches is noticed the owner shall arrange for a contractor to <br /> properly remove the accumulated sediments. <br /> 5. If standing water is observed above the grate inlet rim 24 hours past a storm event inspect the <br /> system for the presence of clogging or obstruction. If clogging or an obstacle exists arrange for <br /> the system to be cleaned. <br /> ...............................................................w_._...._ ._.w.......................... ........w........w..w... _..,.._w............,.,_......................___............................ ...... ___ <br /> Page <br /> 1 <br />