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Maintenance Task <br />Frequency of Task <br />Prune and weed excess vegetation to maintain Monthly <br />conveyance/infiltration capacity. <br />Remove litter, debris, and accumulated sediment; dispose <br />of it properly. <br />❑ Till or replace soil (using biotreatment soil mix specified in <br />Appendix K) as necessary to maintain the design elevation <br />❑ of soil. <br />Remove and replace all dead and diseased vegetation <br />(replace plants in kind, or per Appendix B plant list). <br />❑ Inspect flow-through planter using the attached inspection <br />checklist. <br />Before wet season (August <br />or <br />September); <br />After wet season (May) <br />Before wet season (inspect <br />in <br />August make all corrections <br />by September 30), and <br />After wet season (May), and <br />Monthly during wet season <br />I L I (October through April <br />II. Prohibitions <br />The use of pesticides and quick release fertilizers is strongly discouraged. For the purposes of <br />stormwater treatment measure maintenance and function, it is anticipated that non -chemical <br />controls (i.e., biological, physical, and cultural controls) will be adequate to address any pest <br />problems. Proper and timely maintenance, as described in this plan, should serve to reduce the <br />potential for pest establishment. <br />To avoid the need for pesticides or quick release fertilizers, follow the principles of integrated pest <br />management (IPM): <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 />III. Mosquito Abatement <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. info0i),smcmad.orq <br />IV. Inspections <br />The attached Flow -Through Planter Inspection and Maintenance Checklist should be used <br />to conduct inspections monthly (or as needed), identify needed maintenance, and record <br />maintenance that is conducted. <br />REV: 4-12-2023 SK <br />ATTY/AGR.2023.072/SI XX, LLC (Broadway Plaza STMMA) (Page 51 of 55) <br />Page 17 of 19 <br />