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The principal maintenance objectives are to ensure that water flows unimpeded via vegetated or <br />rock lined swale and Table 2 shows the routine maintenance activities, and the frequency at which <br />they will be conducted. <br />No. <br />Table 2 <br />Routine Maintenance Activities for Vegetated or Rock Lined Swale <br />Maintenance Task <br />1 Remove obstructions, debris and trash from vegetated or rock <br />lined swales and dispose of properly. <br />Frequency of Task <br />Monthly, or as needed after <br />storm events <br />2 Inspect vegetated or rock lined swales to ensure that water from Monthly, oras needed after <br />storms flows properly. storm events <br />3 Inspect swales soil exposure. Clear obstructions and remove <br />sediment. <br />4 1 Remove and replace all dead and diseased vegetation. <br />Monthly, or as needed after <br />storm events <br />Twice a year <br />The principal maintenance objectives are to ensure that water flows unimpeded into the roadside <br />bioretention basin and landscaping remains attractive in appearance. Table 3 shows the routine <br />maintenance activities, and the frequency at which they will be conducted. <br />No. <br />Table 3 <br />Routine Maintenance Activities for Roadside Bioretention Basins <br />Maintenance Task <br />1 Remove obstructions, debris and trash from roadside <br />bioretention basin area and dispose of properly. <br />2 Inspect roadside bioretention basin to ensure that it drains <br />between storms and within five days after rainfall. <br />3 Inspect inlets for channels, soil exposure or other evidence of <br />erosion. Clear obstructions and remove sediment. <br />4 Remove and replace all dead and diseased vegetation. <br />5 Maintain vegetation and the irrigation system. Prune and weed <br />to keep roadside bioretention basin neat and orderly in <br />6 Check that mulch is at appropriate depth (3 inches per soil <br />specifications) and replenish as necessary before wet season <br />begins. <br />Frequency of Task <br />Monthly, or as needed after <br />storm events <br />Monthly, or as needed after <br />storm events <br />Monthly, or as needed after <br />storm events <br />Twice a year <br />Before wet season begins, or as <br />needed <br />Monthly <br />7 Inspect roadside bioretention basin using the attached Monthly, or after large storm <br />inspection checklist. events, and after removal of <br />accumulated debris or material <br />II. Prohibitions <br />The use of pesticides and quick release fertilizers shall be minimized, and the principles of integrated <br />pest management (IPM) followed: <br />1. Employ non -chemical controls (biological, physical and cultural controls) before using <br />chemicals to treat a pest problem. <br />2. Prune plants properly and at the appropriate time of year. <br />3. Provide adequate irrigation for landscape plants. Do not over water. <br />4. Limit fertilizer use unless soil testing indicates a deficiency. Slow-release or organic <br />fertilizer is preferable. Check with municipality for specific requirements. <br />5. Pest control should avoid harming non -target organisms, or negatively affecting air and <br />water quality and public health. Apply chemical controls only when monitoring indicates <br />that preventative and non -chemical methods are not keeping pests below acceptable <br />levels. When pesticides are required, apply the least toxic and the least persistent <br />ATTY/AGR.2025.038/112 Vera Ave, L.P. (112 Vera Ave) (Page 15 of 23) <br />