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Flow Through Planter Maintenance Plan Date of Inspection: <br />Property Address: 2950 Bay Road Redwood City, CA 94063 Treatment Measure No.: <br />Table 1 <br />Routine Maintenance Activities for Flow -Through Planters <br />4 <br />Check that soil is at appropriate depth. Till or replace soil with the approved <br />Before wet season and as <br />biotreatment soil mix as necessary to maintain a minimum of 6 inches between <br />necessary <br />top of mulch and overflow weir. <br />5 <br />Remove accumulated sediment, litter and debris from flow-through planter and <br />Before wet season and as <br />dispose of properly. Confirm that no clogging will occur and that the box will <br />necessary <br />drain within three to four hours. <br />6 <br />Inspect flow-through planter to ensure that there are no clogs. Test with garden <br />Monthly during the wet season, <br />hose to confirm that the planter will drain within three to four hours. <br />and as needed after storm events <br />7 <br />Inspect downspouts from rooftops and sheet flow from paved areas toensure <br />Monthly during the wet season, <br />flow to planter box is unimpeded. Remove debris and repair damaged pipes. <br />and as needed after storm events <br />Check splash blocks or rocks and repair, replace and replenish as necessary. <br />8 <br />Inspect overflow pipe to ensure that it will safely convey excess flows to <br />Before the wet season, and as <br />storm drain. Repair or replace any damaged or disconnected piping. <br />necessary <br />9 <br />Inspect flow-through planter to ensure that box is structurally sound (no cracks or <br />Annually <br />leaks). Repair as necessary. <br />10 <br />Inspect flow-through planter using the attached inspection checklist. <br />Monthly, or after large storm <br />events, and after removal of <br />accumulated debris or material <br />II. Prohibitions <br />Do not use pesticides or other chemical applications to treat diseased plants, control weeds or removed <br />unwanted growth. Employ non -chemical controls (biological, physical and cultural controls) to treat a pest <br />problem. Prune plants properly and at the appropriate time of year. Provide adequate irrigation for <br />landscape plants. Do not over water. <br />III. Mosquito Abatement Contact Information <br />Standing water shall not remain in the treatment measures for more than five days, to prevent mosquito <br />generation. Should any mosquito issues arise, contact the San Mateo County Mosquito Abatement District <br />(SMCMAD), as needed for assistance. Mosquito larvicides shall be applied only when absolutely necessary, <br />as indicated by the SMCMAD, and then only by a licensed professional or contractor. Contact information for <br />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.or <br />Page 2 <br />ATTY/AGR.2025.062/Stanford Health Care (2950 Bay Rd. STMMA) (Page 19 of 21) <br />