Laserfiche WebLink
Table V-4.5.2(21) Maintenance Standards - Bioretention Facilities <br /> (continued) <br /> Recommended Fre- Condition <br /> uenc when Main- <br /> Maintenance quency a Action Needed (Pro- <br /> tenance is <br /> Component Routine main <br /> Needed (Stand- <br /> tenance ards) <br /> lowed by sev- <br /> eral more <br /> passes. With <br /> this method , <br /> each pass <br /> increases soil <br /> absorption and <br /> allows more <br /> water to infilt- <br /> rate prior to run- <br /> off <br /> • Plants are typically <br /> selected to be <br /> drought tolerant and <br /> not require regular <br /> watering after estab- <br /> lishment; however, <br /> trees may take up to <br /> 5 years of watering <br /> to become fully <br /> established <br /> Summer water- Established • Identify trigger mech- <br /> ing (after As needed vegetation (after anisms for drought- <br /> establishment) 3 years) stress (e.g., leaf wilt, <br /> leaf senescence, <br /> etc.)of different spe- <br /> cies and water imme- <br /> diately after initial <br /> signs of stress <br /> appear <br /> • Water during <br /> drought conditions <br /> or more often if <br /> necessary to main- <br /> 2014 Stomawater Management Manual for Western Washington <br /> Volume V- Chapter 4 -Page 884 <br />