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Flow-Through Planter Maintenance Plan Date of Inspection: <br /> Property Address: Treatment Measure No. : <br /> Table 1 <br /> Routine Maintenance Activities for Flow-Through Planter <br /> No. Maintenance Task Frequency of Task <br /> 1 Evaluate health of trees and groundcover. Remove and replace all dead Twice a year <br /> and diseased vegetation. Treat vegetation using preventative and low-toxic <br /> methods. <br /> 2 Maintain vegetation and the irrigation system. Prune and weed to keep flow- As needed <br /> through planter neat and orderly in appearance. <br /> 3 Check that mulch is at appropriate depth (3 inches per soil specifications) Monthly <br /> and replenish as necessary. <br /> 4 Check that soil is at appropriate depth. Till or replace soil as necessary to Before wet season and as <br /> maintain a minimum of 6 inches between top of mulch and overflow weir. necessary <br /> 5 Remove accumulated sediment, litter and debris from flow-through planter Monthly during the wet season, <br /> and dispose of properly. Confirm that no clogging will occur and that the box and as needed after storm <br /> will drain within three to four hours. Test with garden hose to confirm that events <br /> the planter will drain within three to four hours. <br /> 6 Inspect NDS bubblers to ensure flow is unimpeded into the planter. Remove Before the wet season, and as <br /> debris and repair as necessary to allow the bubblers to properly distribute necessary <br /> flow. <br /> 7 Inspect overflow inlet and pipe to ensure that it will safely convey excess Monthly during the wet season, <br /> flows to storm drain. Repair or replace any damaged or disconnected and as needed after storm <br /> piping. events <br /> 8 Inspect flow-through planter, including the cleanout, to ensure that box is Annually <br /> structurally sound (no cracks or leaks). Repair as necessary. <br /> 9 Inspect flow-through planter using the attached inspection checklist. Monthly, or after large storm <br /> events, and after removal of <br /> accumulated debris or material <br /> Table 2 <br /> Routine Maintenance Activities for Storm Drain Lift Station & Detention Pipe <br /> No. Maintenance Task Frequency of Task <br /> 1 Inspect Storm Drain lift station to ensure pump, including the float switch, is On-going <br /> functioning adequately. Inoperable pumps must be repaired or replaced <br /> immediately. <br /> 2 Inspect Storm Drain lift station's sump and remove any buildup, sediment, Monthly during the wet season, <br /> and any other debris. and as needed after storm <br /> events <br /> 3 Inspect 2" Storm Drain force main delivering water from the pump to the Before wet season and as <br /> flow-through planter. Repair or replace any damaged or disconnected necessary <br /> piping. <br /> 4 Inspect Storm Drain force main manhole structure, including the grate, for Annually <br /> any damage. Repair or replace as necessary. <br /> 5 Inspect site detention pipe, including storm inlets for any damage, including Monthly during the wet season, <br /> clogs, sediment, or any other debris. Repair or replace any damaged or and as needed after storm <br /> disconnected piping. events <br /> 6 Inspect storm drain lift station using the attached inspection list Monthly, or after large storm <br /> events, and after removal of <br /> accumulated debris or material <br /> K:\MAINt2014140085k06 Design Information - Reports\C Storm Drain System\SW_MaintenanceAy reement\C2 BioretentiooMnintenatnceChecklisl.doc Page 2 <br /> ATTY/AGR.2016.104/150 ECR - SummerHill -- STMMA <br />