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

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•
WATER MANAGEMENT CONSULTANTS WELL CONSTRUCTION DIAGRAM Sheet No: 1 of 3
Well No: GVMW-23A Project Name: CCBV HYDRO INV. Client: CC&V - 2736
Coordinates: 50,041 E Township:
Range:
Section:
Quarters: Location Elev: 9
764 ft
m
l
69W
15S
17 ,
a
s
59,292 N Drilling Method: DIRECT ROTARY Water Level Meas. Point Elev: 9,765.5 It amsl
Drilling Company: AK Development Method: NONE Inclination:
' Logged By: BL/MG
90
Start Date/Time: 08/18/07 07:00 Screen Type: 20 SLOT PVC Well Casing Mat: Well Stkkwp:
PVC 1.5 FT
Completion DateTme: 08/18/07 15:00 Gravel Pack Type: 6/9 SAND Cased Depth: 0 - 40 FT Well Diameter 2 IN
Final Depth: 250 FT Seal Type: BENTONITE CHIPS (9 bags) Borehole ID:GVMW-23A screened interval:
40 - 90 FT ouantilyofsand:
12 bag.,

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Group name, Color, Density, Grain size/Plasticity, Moisture,
J
m 2
0 4) ?'v Cohes., Sed. struct, Weathering, Organics m 0 o
J Q cc U

0 °
10YR Alluvium and weathered bedrock, 0'-35', dark sandy clay with v
-} F 2/2 CL medium coarse sand, heavy organics, very plastic, very moist N
-- --- m
y {>. N Lots of cobbles of tbx and xgd, with cobbles subrounded-subangular E
....... .........
5/4
GM
Z

SR Lots of cobbles of tbx and xgd, with cobbles subrounded-subangular 2 IN PVC
5/4 GM
15 - - -- 15
10R - -- --
Mostly cobbles of xgd with small amounts of tbx. Some sediment, but ---
'•i
4/4
GM
there is too much drilling fluid to typify it
20 --- -- z -- ------ ----- ------ ----- - -- - -- 20
tOR Xgd with iron staining, rig bouncing at 23'
.. ............ ..
'
4/4
GM
25 --- 25

. ...... y?
.,r
10R Xgd with iron staining -- --
8 INCH STEEL
4/4 GM
SURFACE
30
--
._.-

--------------- 30

CASING
5R Xgd with iron staining
4/6 GM
35 - f35
............
-
SR
* + * D Fresh xgd, (Pikes Peak granite) 38'-250' with fxgd (foliated Pikes Peak
40 * + + *? - -- -- -gmTitterbedmck-at38` - ---- ----- - --- ---- ---- 40
_.+."..t... *... ........ SR Fresh xgd .;. : ?.

45 4/6
; :.

20 SLOT
+

50
+ -50
+ * + *
1OR Fresh xgd, more quartz
+ 5/4 r
55- -- } -k- --- - 55 a<:
+ + + * * + 10R Fresh xgd, more quartz
i:

y, ..... +..... 5/4
,
,

60 +
*
+ * + * + +
±
+
5GY Chloritic, aphanetic, small biotite crystals, color change and firer
*.*...+ .
.....
+ + ........
7/1 drilling at 61' ?
65
+
_-
----
--
-----------_ ____------------- -_.._.... -- --
__ _-
65
SCREENED It`
+ + *
* Mostly xgd mixed with traces of previous minerals - i'
+ + +
70-
+ *
+

' -70
:
t y
:
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+ + Predominantly xgd, still some alteration, softer drilling at 67 -

+ + + * + Mostly xgd, some fxgd, air lift test at 80' is dry

80 ? - - r -- ---------- -- -- -- - - - 80
r.
+ + ++ + + Mostly xgd, some fxgd
+ 0:
*
+
+
*
+
+
+ Mostly xgd, some fxgd

+ * +

+ + Mostly x9d, some fx9d = ; 4 4,•- -

95-
+ -95
* * + Mostly x d some fx d

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