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Table V-4.5.2(21) Maintenance Standards - Bioretention Facilities <br /> (continued) <br /> Recommended Fre- Condition <br /> uenc when Main- <br /> Maintenance q y a Action Needed (Pro- <br /> tenance is <br /> Component Routine Main- cedures) <br /> Inspection Needed (Stand <br /> ards) <br /> • Remove standing <br /> dead vegetation <br /> • Replace dead veget- <br /> ation within 30 days <br /> of reported dead and <br /> dying plants (as prac• <br /> tical depending on <br /> weather/planting sea• <br /> son) <br /> • If vegetation replace- <br /> ment is not feasible <br /> within 30 days, and <br /> absence of veget- <br /> ation may result in <br /> Standing dead erosion problems, <br /> Fall and temporary erosion <br /> Spring vegetation is control measures <br /> present should be put in <br /> place immediately. <br /> • Determine cause of <br /> dead vegetation and <br /> address issue, if pos- <br /> sible <br /> • If specific plants <br /> have a high mortality <br /> rate, assess the <br /> cause and replace <br /> with appropriate spe- <br /> cies. Consultation <br /> with a landscape <br /> architect is recom- <br /> mended. <br /> Fall and Planting • When working <br /> 2014 Stormwater Management Manual for Western Washington <br /> Volume V- Chapter 4 -Page 874 <br />