2008-04-15_REVISION - M1980244 ‎(306)‎

• Permit No: M1980244
• IBM Index Class Name: REVISION
• Doc Date: 4/15/2008
• Doc Name: VOL II Appendix 2, Attachment B- Grassy Valley 2007 Monitoring Well and Piezometer Borelogs
• From: CC&V
• To: DRMS
• Type & Sequence: AM9
• Media Type: D
• Archive: No

•

WATER MANAGEMENT CONSULTANTS WELL CONSTRUCTION DIAGRAM Sheet No: 1 of 1
Well No: GVMW-23B Project Name: CC&V HYDRO INV. Client: CC&V - 2736
Coordinates: 59,310 E Township:
Section:
Range:
Quarters: Location Elev:
9
769
5 ft amsl
15S
69W
17 ,
.
50,032 N Drilling Method: DIRECT ROTARY Water Level Meas. PointElev: 9,766 ft amsl
Drilling Company: AK Development Method: NONE Inclination: Logged By: BL/MG
90°
Start Date/Time: 08/18/07 09:00 Screen Type: 20 SLOT PVC Well Casing Mat: Well Stkk?p:
PVC 1.5 FT
Completion Datemme: 08/18/07 15:00 Gravel Pack Type: 6/9 SAND Cased Depth: 0 - 10 FT Well Diameter: 2 IN
Final Depth: 40 FT Seal Type: BENTONITE CHIPS (9 bags) Borehole ID:GVMW
23B Screened Interval: Q""Uty of Sand:
- 10 - 40 FT 12 ba
o rn
c
d ?o
E
Description aci
E 2 ar
a) c
° E
v t c -o° w Group name, Color, Density, Grain size/Plasticity, Moisture, F J 5 m 2 0
o 0 U Cohes., Sed. struct, Weathering, Organics c o
o (
J
0 Q
„ ` 10YR Alluvium and weathered bedrock, 0'-40'
2 IN PVC
t 5/4 sv
5
'z Fxgd cobbles, no sediment sample preserved E 8 INCH STEEL
GM
6
SURFACE
10 - ----- __ _10 CASING
90% xgd, 10% breccia cobbles, too much water to fully assess sed-
" GM iment, but seems to be an inorganic mixture of 40% gravel, 30% each
15 ' sand and clay. Sand is very coarse, sediment has medium las' '
ry
FY:
15 ^' "r

20 SLOT
-
-
Xgd with iron staining, looks like weathered bedrock, clays are ---
;
+ + '" +
+ possibly hosted within fractures; these clays are moderate i`
:

20
+ * + + +
f k_.

_...-

- -
yellow-brown With high plasticity, air Ift test at 20' yields 5 gpm?

20

y ;-

SCREENED ID
?
+ - ----- - -- _____ _
+ + * + * + `_,
' Xgd with iron staining, looks like weathered bedrock, clays are
S
. ...... +....
possibly hosted within fractures; these clays are moderate Y .
25 ? + *+ + +

? - __-- -yellow-brown with high plasticity
--°-- ?- -- - --
--
-
25
1
;:
+ *+ +*

30
+ - _-30
+

35

+
* + *
+
- - - --- - -
Xgd with iron staining, iron stains look like more reduced iron
35
;'. ; .

.::'.Cie: ••??.' •,
+
+ ,'a l
40 TD 40 FT

45 ......................
-----_ - ........
?_
-...
- - - --- -------- -- --- ----
----
-- -
45

50 ......................

....................
. ........

.
50

55 .
-------
...................... ..
.....
-- -
........
-
--
- ----- - ---------- -- -- - -- -- ---' - --
-
- -
55
60 -- -
................ - ---------- - -- -- - - ------- -- -- 60

65 ...... ........
---------._..---
--
__
_65
70 - - -- -
...................... --
........ - -- - ------ ----- ---- - --- - - - -- -- --- -- 70
75
......................
........ 75
80
......................
........ --- -80
85 ------------ -- - - - - -- ' - - - -- - -- - --- - .. - - -- -- -- --- - -- -- 85
90 ___.. - -' -..
...................... .--
........ --- --- - -- -- ----------- --- ----- - --- - -- - 90
95 95