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: OSABH - 1 Project Name: CC&V HYDRO INV. Client: CC&V - 2736
Coordinates: 42,957 E Township: 15S Range: 69W Section: 17 Quarters: Location Elev:
10,085 ft amsl
61,455N Drilling Method: DIRECT ROTARY Water Level Meas. Point Elev:
10,086.5 ft amsl
Drilling Company: AK Development Method: NONE ndination: Logged By: LS
90
°
Start Date/Time: 07/24/07 16:10 Screen Type: 20 SLOT PVC Well Casing MaL: Well Stickup:
PVC 1.5 FT
Completion DateMme: 07/24/07 19:20 Gravel Pack Type: 619 SAND Cased Depth: 0 - 28.5 FT Well Diameter 2 IN
Final Depth: 60 FT Seal Type: BENTONITE CHIPS (9 bags) Borehole ID:G R
763 screened lnbsrval: Quantity of sand:
- 28.5 - 48.5 FT 12 ba E
Cit.
o
a

m o

a
E

escription

E

d

x

E
t 8
C -°° N Group name, Color, Density, Grain size/Plasticity, Moisture, J L _
ar 2 0
O (D
L)
Cohes., Sed. struct, Weathering, Organics M
c o
J
o
U

0 °
10yr Alluvium and weathered bedrock, 0'-45', silty sand with gravel,
5/4 SM moderate yellowish brown, up to 1.5 cm, moist, clasts are part of
5 breccia, weathered
5 8INCH STEEL

loyr Breccia TbXIL clasts SURFACE

........
5/4
SM CASING
10
tt
. 10
A1
41A1 10'
i +. f..? .i ......- 5/4 SM
X41
41
141414
15 4
. ? a a
{ 15
10yr Sandy silt w/gravel, greyish orange, moist, clasts of weathered
' 7/4 ML XGD up to 1.5 cm :
20
°
o.
20
p.p
.
p ,.. 10yr Darker clasts (more fresh) 2 IN PVC
p. Q ... ;:. 7/4 ML
25 ° 25
o .. _ . o . 0
.
..
?
?
' 1 oyr ::.
p
Q
.
.:
.. 7/4 ML
30 0 . ...
° 30
20 SLOT
, p ..
.p ..'
. 10yr .:f `•
y
a Q ... ..... 7/4 ML
35 _ 35
'.b 10yr Silty sand with gravel - same as above but fines a bit more sand &
a., , ... 6/6 SM grading to dark yellowish orange -; - SCREENED 11'
40 0 ° . 40
0
a Pale yellowish brown silty sand with gravel and some clay, moist -'
.
°
SM 14:10
7/25/07
45 43.75 -
.45
+ * + *+ + Xgd (Pikes Peak granite, xgd 45'-60'), chips pink - granite, fresh
+. 4.± .+....+.+ .. XGD
50
+ +
+

50
+
* * * + Light grey dry XGD, fresh chips
+
+
55 + +
+ ++ +
+
+ 55 BENTONITE
*
* + + CHIP
++?+ +* *
+
+ BACKFILL
60 +
* 60 TD 60 FT
65 65
70 70
75 75
80 80
85 85
90 90
95 95