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Figure V-4.1: <br />Plan Vie <br />f� <br />l_____________ <br />infiltration trench <br />Downspout Infiltration Trench <br />sump wlsolid lid <br />roof drain <br />overflow <br />Profile View 4"rigid or 6"flexible splash block <br />A perforated pipe CB sump <br />vefsolid lid <br />6" <br />6" <br />1T2" vrashed rock 1 Y2"-3a" 1' min <br />1—_----_ 1, min <br />T A fine mesh screen <br />f-1 varies <br />10' min. 5' min. <br />Section A -A <br />filter iabric compacted backfill <br />6" <br />ia yiE�i4" rigid or 6" flexible <br />i� WAAram- NA -A perforated pipe <br />11-•I =11- Ali:_/-"•ii� /G%i <br />11=11a11?11�11 <br />NOT • SCiFm <br />Typical Downspout Infiltration Trench <br />Revised June 2016 <br />DEPARTMENT OF <br />ECOLOGY please see httpYAA w..ecywa.gov/copyrighthtmt for copyright notice including permissions, <br />State of Washington limitation of liability, and disclaimer. <br />2019 Stormwater Management Manual for Western Washington <br />Volume V - Chapter - Page 709 <br />