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fMM
#
a0M
ON.MMP
NEW
HMA
e
EXISTING
GROUND
PROPOSED GRACE\
(LANDSCAPED \
SLOPE)
TEMPORARY
IWWCONCRETE SLAB
ON WELL CASING
E=nNG POOP
VDIA
1
EI(MTINO — -� R ' STEEL WELL CASING I f 1 YROCK
ROADWAY FILL- =
IROCK; j I GBF _ I I
APPROXNMTE LIMB I / FILLK I i ___ �g WELL CASING (AS° OBSERVATION
OF ROADWAY FILL WELL NOT SHOWN FOR CLARITY)
` GROUT I _ —FILL WELL CASING
FlLL MINE �.' -III i - - WITH CONCRETE f-EXIB'
SHAFT I i 4 °`- CUT -0FF WALL ( MINE
WITH CDF —'�., -_ 1 1
APPROXIMATE LIMIT
OF E%NTING
I
I .l
SEE DP -0 -21 FOR
CONTINUATION —t
DATUM
(NAVD) 88
e
EXMHNG 18" NINE !
RCP "MIN PIPE J
EXISTING !/
STING STAND PINE
15' CIA SOLID WALL HOPE IN
1S" DIA CONC PIPE GROUT THE
VOID SPACE BETWkEN THE PIPES1
IV CM SOLID
WALL HOPE PIPE
AS' DIA STEEL G
� MaTING COLLAPSED
T ER FALSEWORK
PLUG IN WELL CASING
CONSTRUCT A AB" WIDE OPENING
IN CUTOFF WALL. FORM SMOOTH
APRON AT BASE OF OPENING. PLACE
QUARRY SPALLS AT APRON.
W CIA STEEL CASING
C)RG I PIPE
MINE DRAIN EXTENSION AND VOID FILL CONCEPT
NTS
NOTES:
1. NSTALL A FLEXIBLE CABLE IADOER
SAFETY SYSTEM BY IAO F®
OR APPROVED EGUAL FOR FALL
PROTECTION.
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DEZIaR
TASK LEAD:
STAGE 2 - WIDENING
R.ADANM
;min.d
*= L �)al
Washington State
Department of Transportation;
AND SR 516 INTERCHANGE
pp p�
7624
PACKAGE:
DER HILLS CREkK ULVEI
& MINE DRAIN PROFILE
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