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Bioretention Area Inspection and Maintenance Checklist <br />Property Address: 100 Halcyon Dr San Leandro„ CA <br />I. Routine Maintenance Activities <br />Date of Inspection: <br />Treatment Measure No.: <br />The principal maintenance objective is to prevent sediment buildup and clogging, which reduces <br />pollutant removal efficiency and may lead to bioretention area failure. Routine maintenance <br />activities, and the frequency at which they will be conducted, are shown in Table 1. <br />Table 1 <br />Routine Maintenance Activities for Bioretention Areas <br />No. <br />Maintenance Task <br />Frequency of Task <br />1 <br />Remove obstructions, debris and trash from bioretention area. <br />Monthly, or as needed after <br />storm events <br />2 <br />Inspect bioretention area to ensure that it drains between <br />Monthly, or as needed after <br />storms. <br />storm events <br />3 <br />Inspect inlets for channels, soil exposure or other <br />Monthly, or as needed after <br />evidence of erosion. Clear obstructions and remove <br />storm events <br />sediment. <br />4 <br />Remove and replace all dead and diseased vegetation. <br />Twice a year <br />5 <br />Maintain vegetation and the irrigation system. Prune and <br />Before wet season begins, or <br />weed to keep bioretention area neat and orderly in <br />as needed <br />appearance. <br />6 <br />Inspect and, if needed, replace mulch before wet season <br />As needed <br />begins. Replace mulch when erosion is evident or when <br />bioretention area looks unattractive. <br />7 <br />Replace mulch over entire area every two to three years, if <br />Once every two to three years <br />needed. <br />8 <br />Inspect bioretention area using the attached inspection <br />Monthly, or after large storm <br />checklist. <br />events, and after removal of <br />accumulated debris or material <br />Prohibitions <br />The use of pesticides and quick release fertilizers shall be minimized, and the principles of integrated <br />pest management (I PM) followed. <br />III. Inspections <br />The attached Bioretention Area Inspection and Maintenance Checklist shall be used to <br />conduct inspections monthly (or as needed), identify needed maintenance, and record <br />maintenance that is conducted. <br />