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< <br /> �l <br /> dr�Un <br /> p�aN vt�w <br /> N,T.S 4"rigid or fi"flex�le <br /> perforateti PPe <br /> '�-----•-----•------�---•--'----•---•----------•. <br /> ir�iiftrdtlon tfeT1G1 surnp w/solid l'sd <br /> PLAN �/��W roaf drain <br /> NTS <br /> rn+arffow <br /> 4"rigid or 6'fle�dble lash biodc __a_ <br /> perforated pipe � <br /> � r � <br /> � �b--a•--- ---�-�•-----------------'-----�' <br /> � i�b� <br /> �6 � Q W2.S�d fOC�C ��Q�p 4 �p�'� . 1��� 3.U'min <br /> 12" •a�-' 1 1/2°'-3if4' �"��OQ� ° a� 1'min <br /> - - --- ----------------'v�-�'--A9 0��,� <br /> fine mesh scree �--C6 sump w/solid lid <br /> 70'min <br /> raries <br /> A <br /> fiRertabnc <br /> co[npactBB l�3CkTill <br /> ra <br /> . � �'°':a'S'• . <br /> �- '��'� 4"rigid or 6"flexible <br /> 4 q a�o �°p e perfor�ted plPe <br /> 24' o o a <br /> Q 4 � a D Q . <br /> ,��. ¢�Qd a ea 4�� washed rock <br /> 4 � II � 'i 1I2"-3/4' <br /> o� p ��eAaa <br /> b. a <br /> �--24'� <br /> SECT1dM A <br /> . NTS <br /> Figure 3.1.2 -Typical Downspout Infiltration Trench <br /> Source: King Counry <br /> � � <br /> , i <br /> Volu�ne III—Hyd����lo���ic Aricalysis cznrl Flow Coritrol BMPs—Augcist 2012 � <br /> � 3-7 � ' � <br />