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Bio -retention Area <br />Inspection and Maintenance Checklist <br />Property Address:211/217 Vera Avenue, Redwood City, CA APN:053-091-080/090 <br />Treatment Measure No.: 7 Dale of Inspection: <br />Inspector(s): <br />Property Owner: Vera Ave RC LLC <br />Type of Inspection: ❑ Monthly EjPfe-Wet Season <br />DAfter heavy runoff QEnd of Wet Season <br />❑ Other: <br />Defect <br />Conditions When Maintenance Is <br />Maintenance <br />Comments (Describe maintenance <br />Results Expected When <br />Needed <br />Needed? (YIN) <br />completed and if needed maintenance was <br />Maintenance is performed <br />not conducted note when it wll be dons) <br />1. Standing Water <br />When ureter stands In the bio-rearbon <br />There should be no areas of standing <br />area between storms and does not drain <br />water onceinflow has ceased. Any of the <br />wthin five days after rainfall. <br />following may apply: sediment or Vash <br />blockages removed, improved grade from <br />head to foot of bio-rdenbon area, or <br />added underdrains. <br />2. Trash and Debris <br />Trash and debris accumulated in the bio- <br />Trash and deers removed from bio- <br />Acoumulebon <br />retention area <br />retention area and disposed of <br />property. <br />3. Sediment <br />Evidence of sedimentation in <br />Malarial removed so that there is no <br />bio -retention area. <br />dogging or blockage. Material is <br />disposed of property. <br />4. Erosion <br />Channels have rammed around inlets, <br />Obstructions and sediment removed so <br />there are areas of bare sail, and/or other <br />that water flows freely and disperses over <br />evidence of erosion. <br />a wide area. Obstructions and sediment <br />are disposed of property. <br />5. Vegetation <br />Vegetation is dead, diseased and/or <br />Vegetation is healthy and allradive in <br />overgrown. <br />appearance. <br />6. Mulch <br />Mulch is missing or patchy in appearance. <br />All bare earth is covered, except mulch is <br />Areas of bare earth are exposed, or mulch <br />kept 6 inches away from [ranks of trees <br />layer is less than 3inohes in depth. <br />and shrubs. Mulch is even In <br />appearance, at a depth of 3 inches. <br />Z Subdrain <br />When water stands in the bio -retention <br />Thera should be no areas of standing <br />area between storms and does not drain <br />wateronce inflow has ceased. Clean <br />vathin five days afierrainfall. <br />and flush sub lode. <br />8. Miscellaneous <br />Any Cori not covered above that <br />Meet the design spedfications. <br />needs attention in order for the bio - <br />retention area to function as designed. <br />61 Page <br />ATTV/AGR. 2019.266/211/217 Vera (Page 33 of 38) <br />