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E-6 <br /> � Part 2: Mound �yst��ns <br /> A sewage treatment mound is a seepage beci elevated by clean sand AAov.nds must be <br /> . fill to provide an adequate separation distance between the rock layer ��,���y <br /> in the mound and the barrier Ia��er such as saturated soil eonditions . Cp�Sfl7tCt@d <br /> or bedrock.The mound must be carefully constructed to provide <br /> adequate sewage treatment. <br /> Mound failures have usual�y been traced to improper construction <br /> practices. � <br /> PERFORATED <br /> ��---_.... LATERAlS <br /> SA[�lOY WAM SOlL �: F� ,• r. -w`- ��•�,:.::�=,��;:�-��;!'=;-:. <br /> %t� %�, ��� '� ;,:�=�.` <br /> LAYER OF GEOTEXTII.E •� - .- ;- ��" <br /> ...,�_:�i <br /> FABRtC OR 4 lNCHES OF .� %� ,� ,,`"� � <br />- HAY COVERED 9Y <br /> BUILOING PAPER x�'� •" s;, 'fj � �� <br /> � - - 's� �' •� i . l � <br /> t / OR 2 � ,.�•r�-' j . , ; <br /> PIPE �ROM PUMP� - a-.. �i� �:-" _,� ��' <br /> '�->-' �� i�' • = �1 - <br /> �' . � <br /> I" _ j�,y `� �' � • >''�t. � <br /> 3 '2 y �f .� !, <br /> CLE�AN i�OCK �� _� `i DiVERSlORt FOR <br /> ��. <br /> 6' TOP SOI L ��� .`�. i�� �� �I � � �� SuRFaCE waTER <br /> , � =� :. �. ! / <br /> �� M� �� ;� �s <br /> -.,� _.;:i;:s - •� � ,t'P ��, ,.�r . <br /> '�ti:?� : � 3 t�,,�. <br /> - �,- -_� �� _ �. r9��j:;� �x. , _�: <br /> .:- i S� - _.�` =. ;J �,2: -.-.. ._.._--� � <br /> �� OpE � � -'j'` . : . ='f�;;a�;;A::.�'��� <br /> SqNe� . _. •.:.. ..; �r:k:-. <br /> 0 F ` �� .. g�. ��:-J"��:�f=�;.:. <br /> f l� BSp�� � �_ �-.;;,,;,",�-,�.�z_,, <br /> pkFNAlr UP .�- _ ..:�_� ���' .. <br /> gq�NRATU� `'°='-�� <br /> �ER tqYER'�' <br /> • �gure E-6 � <br />