_REVISION - M1974015 ‎(8)‎

• Permit No: M1974015
• IBM Index Class Name: Revision
• Doc Name: AMENDMENT
• Type & Sequence: AM1
• Media Type: M
• Archive: No

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— ° "_�l. "r'i li �' �� �-'^ .� t�(6�j -�% -e. -•.T i• -�i '�- - 1 __ _ may` .:! ._h
*/ 200' ✓_
i, .•� i1 - / .• /: ,PLAN OF BARRIER
- VJ
- - cc a......,.
Westerly Edge of Barrier y? TiJ j
__.._ .
Shown in Plan View
--4
Overburden -
Topsoil as needed;to be vegetated--.I-,--,- V
as soon as possible
2
Sand and _'_ ..
Gravel 12't __ Barrier? =Y 1 L.. A
Easterly E III
dge of
(See Barrier Shown In .
Note: 5) 4'± 1 - Pan View 1
- (See Note 5) 1 t
-- Toe Filter;'_ -
Key
Shale Ditch as requlre41
12 _ 5'min. to provide posi7
tive drainage
NOTES _.
1. Construct Key and Barrier of select overburden compacted to 4. Barrier must be raised quickly to avoid excessive
at least 95 percent of maximum density as determined by ''groundwater from enter Ing the barrier (see text) .
ASTM D698 -70.
- - - - -_ 5.� Actual depth to shalewill vary. Height of toe filter
2. Construct Toe Filter of pit run sand and gravel compacted to be 1/3 of depth to shale.
to at least 90 percent of maximum density as determined 6. Construction to be Inspected by competent engineer to
MCDOWELL, SCOTT b COX INC. _ by ASTM D698 -70.
i identify select overburden, satisfactory Keyway soils,
- __
... _ Cut Keyway af' least 1 foot deep and into firm shale: ,and to control' compaction. -}1'- - -
3 -.
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Tvnical Section
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0017094