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Mounds View Stormwater Pond Assessment <br />3 RESULTS <br />July 2023 <br />Table 3.2 Basin Sedimentation Accumulation Rate and Estimated Cleanout Year <br />Years since ed <br />Basin -or construction <br />AA-1.P1 48 <br />GF-4.P2 29 <br />EW-11.133 19 <br />Sedimentation• <br />98.5 <br />83.6 <br />Sediment <br />Rate % <br />2.1 <br />Estimated <br />2024 <br />2.9 <br />2024 <br />60.1 <br />3.2 <br />2024 <br />EW-11. P1 <br />21 <br />52.4 <br />2.5 <br />2024 <br />SC-2.P2 <br />18 <br />50.5 <br />2.8 <br />2024 <br />AA-1.P2 <br />48 <br />48.6 <br />1.0 <br />2025 <br />SC-2. P1 <br />18 <br />44.5 <br />2.5 <br />2026 <br />SC-4.P3 <br />18 <br />40.6 <br />2.3 <br />2028 <br />EW-4.P4/SV <br />40 <br />34.7 <br />0.9 <br />2032+ <br />EW-4.P3 <br />18 <br />25.2 <br />1.4 <br />2032+ <br />GF-4.P1 <br />29 <br />24.8 <br />0.9 <br />2032+ <br />GF-1.P2 <br />17 <br />22.9 <br />1.3 <br />2032+ <br />GF-1.P1 <br />17 <br />16.3 <br />1.0 <br />2032+ <br />BPN-5.P1 <br />34 <br />15.5 <br />0.5 <br />2032+ <br />G F-4. P3 <br />41 <br />13.4 <br />0.3 <br />2032+ <br />SC-4. P2 <br />18 <br />12.4 <br />0.7 <br />2032+ <br />EW-11.132 <br />19 <br />11.2 <br />0.6 <br />2032+ <br />EW-7.P1 <br />24 <br />11.1 <br />0.5 <br />2032+ <br />GF-2.131 <br />17 <br />9.7 <br />0.6 <br />2032+ <br />EW-6.132 <br />22 <br />8.8 <br />0.4 <br />2032+ <br />G F-2. P2 <br />17 <br />7.7 <br />0.5 <br />2032+ <br />EW-6.131 <br />22 <br />7.4 <br />0.3 <br />2032+ <br />BPN-4.P1 <br />34 <br />5.6 <br />0.2 <br />2032+ <br />G F-2. P3 <br />17 <br />3.9 <br />0.2 <br />2032+ <br />3.2 MINOR MAINTENANCE ASSESSMENT <br />A summary of the minor maintenance needs assessed through MS4 inspections is outlined in Table 3.3. <br />Items of concern requiring follow-up actions from City public works staff are noted by an 'X' in the table. <br />Copies of the full inspection reports can be found in Appendix A. All the maintenance inspection <br />information was captured using ArcGIS Online and can be shared with the City upon request. <br />17 <br />