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Figure V-4.2: Alternative Downspout Infiltration Trench System for <br />Coarse Sand and Gravel <br />2' min. i " 15' min. ►I <br />Note: Same length dimensions and site <br />limitations as typical system <br />NOT TO SCALE <br />Alternative Downspout Infiltration Trench <br />"Iowa System for Coarse Sand and Gravel <br />DEPARTMENT OF Revised June 2016 <br />ECOLOGY Please see httpYA4 wwecy wa.gov/aopyrighLhtml 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 4 - Page 710 <br />