Daily Logging Report PB Landslide May 03, 1984 through May 07, 1984 Page_ c -y
DLIL/ LCGG=G REPORT
Por-h-aguese Bend. landslide, Palos Verdes
EOP-LIC NO: Y2M DA=
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LE:CATION ' 3CE.1G
T*P3 Qr 30RIHC: Rotary air and rotary and; 5 5/8" tric one bit
EAM COMMEED: 5/1/84 IUM C0 14=D: 5/7/84
USE AY= COITION: Groundwater aonitonjn well,
LCCCLITG BEFIZENCE POLL: P.LEY. feet
LO=ING 3Y: wry Kf e
`e h 3)escription of Materials and Ltilling Information
Log
Nglayey
nff oration
Clayey sandy silt-. brown; rock fragments of tuff, chert, porcelanite,
Nailtstone, and diatdaaosous shale
Silty clay: dark brown; contains some sand, very fine to coarse
grained; rock fragaenta of dolostone, -tuff, and siltstone.
10' ,Silty clay: dark brown; contains some sand, very fine grained.
Silty clay: sane as above, a ept sand content increased to 10 to
15%; very fine to coarse grained.
20' Silty clay: dark brown; contains some sand-5%. •
rate from o' to20', 27 min./201 .
30' Clayey sandy silt: brown; rock fragments of porcelanite, very fine
-grained sandstone, siltstone, sad chert.
''Sandy silt: dark brown; •
Clayey Bandl silt: brown; rock fragments of porcelanite, dolostone,
and chert. ,
4-01
,--Drilling rate from 20'' to 40' , 28 ain./20' .
Silty clay: dark }sown; contains scall amount of very fine to fine
sand grains.
Clayey sandy silt: light orane.sh brown; rock fragments-of tuff,
siltstone, chert, and dolostone.
50' Clayey sandy silt: brown; rock f
ragaeats of tuff, and Marg fine
grained. sandstone.
Rotary cad drilling due to caving at 20' , hole reamed to 55' .
60'
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Silty clayi brawn; rock fragments of tuff, siltstone, and very fine
grained. sandstone.
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Pa•
ge2„Flf
Por ue_� Ben3daljde, Palos Yez_ds
BORING NO: 12M
ilkh Graphic
Description of Kat
03 mals and lliag Information
San. - silt: light oraish brown; rock f
and dolostone with fish scales; oxidised on fracture snrfac se .
• trilling rate froa 60' to E0' , 5 sin./20'
Clilt
s sy light o
rangy sh brown; rock fr• ents of cheat, tuff,
porcelanite; and dam brown clay.
90'
Drilling rate fro: 80' to 100' , 35 sin./20' .
Cla- and.
100 dark brownayev sandy silt: clayey sandy ami
t-ease as above; clams
Silty clay
Sandy silt and Clay: orangish brown.
Cla ey silt and 3entcnitic clay: o
lents of chert z �.agiah brown and gray; rock frag-
, porce_ani.,,e, very fine grahned sandstone, and tuff.
Silt- clay: orangish brown; rock fragments of chert, tuff, and por-
eelanite,
: Cla- : dark brown,
- ty claj: same as at 110' .
Silt cia : light bluish gray; contains sore sand, very fine to : •
coarse grained.
120'- Silty clay: lig'. t orangish brawn;
d_ r ock fragments of tuff and silt-
stone; rilling rate froae 100' to 120' , 20 min./20' .
Siltdoc1a- light orangish brown; rock fragments of tuff, silts tone,
130'-
Silty clay: same as abe7e; rock fragaents of
Porcelanit8, and silt-
stone.
140 L- Bentonitic cia- : gray and
1
Sig 17 min. 20' �$iEh �� � rata frog¢ 120' to
San bentonit is cla : gray; rock fra en;..s of very fine grained
sandstone.
, sad $entonitic clay: orangiah brown and very light bluish gray.
1.50t: .13entonitie clays bluish gray.
•- '�illina harder; slidePl ane?
fDzilling rate from 140' to 160' , 46 min./20' .
LOGG.2.!G 3E201:2
Portuguese Bend. La='slider Palos Verdes
BORING H0: v'v
• Depth Ch`log
a ie Description of Materials and Pri l 1 i*g Information
Bentonitic clays bluish gray; contains small amount of very fine
• grained ed sand.
170'
Hole terminated at 173' .
Drive sample at 173' ; sampler size 1.4"; 200 blows; 300 lbs..
- Sample description, bentonitic clay- bluish gray; contains small
amount of very fine grained sand.
Hole cased to 1?3' with 2" pvc; capped at base, 10 solid, 40' perfo-
rated, 123' solid, from base to top.
'Yater table:
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