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E-6
<br /> Part 2: Niound �y�terns
<br /> A sewage treatment mound is a seepage be�i ete.vated by clean sand Mounds must be
<br /> fill to provide an adequate separation distance between the rock layer earefully
<br /> in the mound and the barrier layer such as saturated soil conditions construeted
<br /> or bedrock. The mound must be carefully constructed to provide
<br /> adequate sewage treatment.
<br /> Mound failures have usually been traced t� improper construction
<br /> practices.
<br /> PERFORATED
<br /> LATERALS
<br /> ,�;����`:"-`=..�.. .-_—---- - ._
<br /> �� —�— -,,.:'�.. .
<br /> SANDY LOAPA SOIL :� �','y• _'� "'' .��.'';': :
<br /> .. �• � �
<br /> r J,.
<br /> %�� ' .:� •�/�• J
<br /> �AYER OF GEOTEXTILE ,w _ � " � -{ ,.� �i`��
<br /> FABRIC OR 4 INCHES OF ' ,,-,;�i,�,,,'� �� •!
<br /> HAY COVERED BY � l .• � ;�_,�' .,•'
<br /> BUILDING PAPER %!� . - � / x �'
<br /> ,; , ,;,...
<br /> I �/ OR 2" ,,,,;'��-' ! `,� � /:
<br /> Z� %r. , il�' �:
<br /> PIPE FROM PUMP� `;�.-, ��, �i,j �', ,
<br /> ;
<br /> �' �%, � /�� •'
<br /> _y�� i � `'' ,r �
<br /> : �
<br /> /� j' 1N/�.
<br /> 3� "_ 21� • �� . ,�/ /.�� � _ � � .�
<br /> CL�AN F�OCK ......�.'" / ,, ,��,,,°/ " .. •/ �
<br /> , � �" /:.�. �; /� OIVERSION FOR
<br /> 6" TOPSOtL� '�. � • .� SURFACE WATER
<br /> '. /� � `
<br /> .-�' / /� � � �
<br /> --c •`': .'I' �,C �';Y� /r� ' r.
<br /> -`-� '--��� 3�/ �7
<br /> ��'��`�' _ ---:=�,� �'� �g„/ /� Mqx �%
<br /> `1`� W tt rf4 { ( ' Y�•�.:
<br /> i�
<br /> ` e �'
<br /> ' S ' fi � 2 . , ,
<br /> . �, —.-., - ; y',
<br /> A�l ��Pe ,::: � : ��!
<br /> S NpAN � � ��; 3 �{ �„ �,,,�,� .
<br /> F��l Spp������ g �,l• "�:�.
<br /> BRpkENAY�R �� ,�_�'''`''��``',..
<br /> �p ,��N_ . ,�., -�--�
<br /> BqR A UR. .�".�.�' _
<br /> RIFR a AYFR ����� .
<br /> Figure E-6
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