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Biotreatment Area Maintenance Plan <br />Property Address: Parcel 1 — 879 Vista Drive <br />No. <br />Table 1 <br />Routine Maintenance Activities for Biotreatment Area <br />Maintenance Task <br />Frequency of Task <br />1 1 Remove obstructions, debris and trash from biotreatment Monthly, or as needed after storm <br />area and dispose of properly. I events <br />2 Inspect biotreatment area to ensure that they drain <br />between storms and within five days after rainfall. <br />3 Inspect inlets for channels, soil exposure or other <br />evidence of erosion. Clear obstructions and remove <br />sediment. <br />4 Remove and replace all dead and diseased vegetation. <br />Monthly, or as needed after storm <br />events <br />Monthly, or as needed after storm <br />events <br />Twice a year <br />5 <br />Maintain vegetation and the irrigation system. Prune and Before wet season begins, or as <br />weed to keep bioretention area neat and orderly in needed <br />appearance. <br />Inspect and, if needed, add mulch before the wet season Before wet season begins, or as <br />6 <br />begins. It is recommended that composted arbor mulch be needed <br />applied once a year to maintain a 3" depth of mulch over <br />all bare soil areas except within six inches of tree trunks. <br />Inspect bioretention area using the attached inspection Monthly, or after large storm events, <br />7 <br />checklist. and after removal of accumulated <br />debris or material <br />II. Prohibitions <br />Do not use pesticides or other chemical applications to treat diseased plants, control weeds <br />or removed unwanted growth. Employ non -chemical controls (biological, physical and <br />cultural controls) to treat a pest problem. Prune plants properly and at the appropriate time <br />of year. Provide adequate irrigation for landscape plants. Do not over water. <br />III. Mosquito Abatement Contact Information <br />Standing water should not remain in the treatment measures for more than five days, to prevent <br />mosquito generation. Should any mosquito issues arise, contact the San Mateo County Mosquito <br />Abatement District (SMCMAD), as needed for assistance. Mosquito larvicides should be applied <br />only when absolutely necessary, as indicated by the SMCMAD, and then only by a licensed <br />professional or contractor. Contact information for SMCMAD is provided below. <br />San Mateo County Mosquito Abatement District <br />1351 Rollins Road <br />Burlingame, CA 94010 <br />PH:(650) 344-8592 <br />FAX: (650) 344-3843 <br />Email: info@smcmad.org <br />IV. Inspections <br />The attached Biotreatment 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 />Page 2 <br />ATTY/AGR.2025.093/879 Vista Drive Partners, LLC (879 Vista Dr (Lot 1) (Page 15 of 16) <br />