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r • <br /> 1 <br /> ' FILTERRA BIORETENTION UNIT—MAINTENANCE GUIDELINES <br /> Maintenance is simple, safe and inexpensive. It typically takes less than 30 minutes <br /> to maintain 1 unit. Trash and heavy sediments accumulate on top of the mulch and <br /> is typically all that is removed. This waste is easily removed and disposed of in <br /> trash bags or buckets. Fresh mulch is then replaced on top of the engineered media <br /> ' and not removed until the next maintenance visit. Hardwood mulch is a highly <br /> effective and an inexpensive pretreatment layer that protects not only the <br /> ' engineered media but also the plant in all weather conditions. <br /> Filterra unit.c The maintenancerrentlyincludesa agreement1-yearmaintenance begins whenagree the systementwith isthe placedpurchase in fullof <br /> operation(complete system installed: curb and gutter and transitions in place, <br /> temporary throat protection removed by the Supplier,and plant installation). <br /> Materials and services included in the 1-year maintenance agreement are: <br /> • Overall unit inspection <br /> ' • Additional mulch as needed <br /> • Addition of engineered media as needed <br /> • Pruning as needed(usually seasonal) <br /> • Visual inspections with appropriate service at six month intervals <br /> ' Removal of sediment, litter, and foreign debris <br /> • Maintenance records updated and stored(reports available upon request) <br /> ' It is the responsibility of the owner to provide adequate irrigation year-round to the <br /> plant within the Filterra system. <br /> 1 <br /> 1 <br /> 1 <br />