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�. � . F'INAI. GROUND SIJRFACE
<br /> , � '�-
<br /> � MAXIMUM SOIL MINIMUM SOIL
<br /> COVER OF 34" �COVER OF 6' �
<br /> ����� �.�.�. �
<br /> � c � 4'��-`� .
<br /> ' o o • • e • • • • � • � .
<br /> `. 4.�( <<,.� ., °�4�
<br /> �`.4`. ^ <<<< � <. ��4�2� OF ROCK
<br /> ` `` MQXIMUM ROCK MINIMUI��ROCK DEPTH OF�IS"
<br /> ���•. OEPTH OF i� �'<<f`�t::.,�� �.
<br /> �
<br /> BOTTOM OF TRENCH
<br /> MINIMUM D(STANCE MINIMUM OISTANCE IS
<br /> TO FINISH GRADE IS 3.0 FEET OF SOIL
<br /> 4.5 FEET (THIS COULO SUITAB�E FOR TREATMENT
<br /> BE 3.0 FEET OF OF SEwAGc TANK
<br /> ORiGINAL SOIL AND 1.5 EFFLUEN7
<br /> FEET OF FILL)
<br /> SEASONALLY SA7URATED SOIL
<br /> OR IMPERvIOUS LAYER
<br /> OEPTN AND SEPARA710N REQUIREMENTS FOR
<br /> DRAINF(ELD TRENCHES OR SEEPAGE BED
<br /> F�urc D-5
<br /> . .���=,' y:f.
<br /> ��Y �r....
<br /> . � , ���,.�.. ,�i'�.
<br /> ���,.,::=.i; �. •:_:.-`.:"'.�fe' :�:�.::.
<br /> 1 .(^(�,. � ..��.i. 'f�� `�: I�
<br /> ��L. ". .,.:;= .L•i'���i�``. :�--r---MWND FILI 4•�6•
<br /> � � ••�ti.�:::i.�- :t::�� � � SETTI� FOR
<br /> r ' �� �� ��i�-,,. .�", 2�, i
<br /> .a. `.�' :l.� � � 1" �
<br /> ��2: -,.�,%��4��� . :` r ,.,ti,�`--��f-' � — �`—GRASS COVER
<br /> ? :' � ,�Q" `JT.. y` � !/f� �� � .
<br /> ,�_ ����"�~o ..• r.}�%'` �� �---r--��6� TO 34� OF SOIL
<br /> -��:k.t.'ij. �� COVFR ABCNE ROCK
<br /> �,..:.`i`�'Lrrt'., J����:y� 'i -- --��r—3/4' TO 2 12� DIA.
<br /> '� .,,r`i=�:p�~��'�.,, :.�;'.; �% �-- ��_ .'� �arr Roac
<br /> �} .,. : .:.,<• 5�:;:: �: �� .
<br /> �,�����'+���;;���'�P;�t�� � �'�� �1N--F'AF'�!!'OR OTEKfIIF FABRI
<br /> �F^,; i i'
<br /> .� �- '
<br /> �`'.,�•'OISf�R ,S'f `:�., . � r�� ---TRQ�OI BOTTOM MUST BE LEVEL
<br /> U� � � , i i THROUGilOUT �ENGTN
<br /> ii
<br /> • + tr��l. �.
<br /> �•` �:,'� i ap'
<br /> `�'.),. -,� __ •
<br /> .) �� iI 2' 1IINIMUAI ROCK CAVER ABOVE PIPE
<br /> ,/'� ,•'�~ /i�
<br /> •'c���=� � ��-- —6� MINIf�AUM ROCK CEPTN BELOW PtPE
<br /> `��.;� /�' �� Z4' MAXIMUM ROCX DEPTN BELOW PIPE
<br /> . f , , ��
<br /> � ,,�
<br /> �� S �___�..`____ I�---4� DI/L RIGID PERFOFtATED PLASTIC PIPE WITH ONE ROW OF
<br /> \�\ O t(.f�t / �� � MOIES ALANG 00TTOM
<br /> �\� \�� �j ��.
<br /> ��\ I ��i � ----WA7ER TpBLE OR Il.1PERVIWS IAYER SUCH AS QAl'FAN,ROCK� ETC.
<br /> ��� 1��i
<br /> �� y�i
<br /> �� �i
<br /> ♦� �/�
<br /> ♦ i
<br /> Figurc D-6
<br />
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