PEBBLE PROJECT DRAFT ENVIRONMENTAL...

PEBBLE PROJECT

DRAFT ENVIRONMENTAL BASELINE STUDIES PROPOSED 2008 STUDY PLANS

CHAPTER 5. GROUNDWATER HYDROLOGY

DRAFT

Prepared For: State of Alaska Large Mine Permitting Team

Department of Natural Resources

Prepared By:

3201 C Street, Suite 604 Anchorage, AK 99503

(907) 339-2600

August, 2008

DRAFT GROUNDWATER HYDROLOGY

SP_2008_DFT_Ch5_August2008 (2) 5-i Rev. 0 8/27/2008

TABLE OF CONTENTS

Section Page Number

TABLE OF CONTENTS ............................................................................................................................... i

LIST OF Tables ............................................................................................................................................. i

LIST OF FIGURES ....................................................................................................................................... i

5. Groundwater hydrology ......................................................................................................................... 1

5.1 Mine Study Area ........................................................................................................................... 1 5.2 Transportation Corridor ................................................................................................................ 3

LIST OF TABLES

Table 5.1-1, Summary of Hydrology tasks for 2008

Table 5.1-2, Period-of-Record Index, Groundwater Monitoring Locations, Mine Study Area, Wells and Piezometers Downstream of Frying Pan Lake in South Fork Koktuli Watershed

Table 5.1-3, Summary of Monitoring Wells and Piezometers by Drainage

Table 5.1-4, Study Summary for Groundwater Hydrology, Mine Study Area, 2004-2008

LIST OF FIGURES

Figure 5.1-1, 2008 Study Plan Groundwater Studies Mine Study Area

Figure 5.1-2, Existing Well and Piezometer Locations

Figure 5.1-2, Proposed Well and Piezometer Locations


5. GROUNDWATER HYDROLOGY

Water Management Consultants (WMC) is the prime consultant for the groundwater hydrology study, with support provided by SLR Alaska and Knight Piésold Consulting Engineers. Bristol Environmental and Engineering Services Corporation conducted the groundwater hydrology study for the transportation corridor. No data on groundwater hydrology are being collected for the transportation corridor in 2008.

5.1 Mine Study Area The study area for 2008 is presented in Figure 5.1-1 and the locations of existing wells and piezometers are presented in Figure 5.1-2. The objectives and scope of work for the 2008 groundwater hydrology study in the mine study area are the same as those described in the 2005, 2006, and 2007 Study Plans with exceptions noted below. The methods and approaches for the 2008 study are described in the Field Sampling Plan. A summary of the tasks for the hydrogeology study during 2008 is shown in Table 5.1-1.

TABLE 5.1-1 Summary of Hydrogeology Tasks for 2008

Task No. Task

201 Field Work Support

202 Input to Tasks by Others

203 Site Groundwater Model

204 Heat Transport Calculations

205 Pit and Underground Groundwater

206 Tailings Area Groundwater

207 Groundwater Supply Assessment

208 Impact Assessment

209 Meetings

210 Reporting

The following activities will be performed to support the groundwater hydrology program in 2008:

• Additional monitoring wells and piezometers will be installed (Figure 5.1-3).

– Approximately 43 drilling locations are planned as part of the hydrogeology program with most locations having two piezometers installed. These holes are the hydrogeology holes depicted as “HH” holes on Figure 5.1-3. Pump testing will be conducted at two or three of the piezometer locations.

– A single deep-bedrock multi-level piezometer (Westbay) will be installed in Pebble East. The instrumentation will be installed in the same way as the other Westbay system installed in 2006: to a depth of about 4,200 feet and will be instrumented with about 50 packers, 50 measurement ports, and 25 pumping ports.

SP_2008_DFT_Ch5_August2008 (2) 5-1 Rev. 1, 8/27/2008


– Geotechnical drilling will continue in 2008 with about 142 locations planned. These holes are the geotechnical (“GH”) holes depicted on Figure 5.1-3.

• Groundwater sampling will continue during 2008

− Based on the sampling program up to the end of 2007, 39 groundwater wells will be sampled quarterly for cations, anions and nutrients in 2008 to document seasonal variation. The details of the sampling parameters are provided in Chapter 6. At the conclusion of the 2008 field investigation, some new wells will likely be added to the program and some wells may be discontinued.

− Additional groundwater samples will be collected from the deep Westbay installation.

• Monthly groundwater level measurements will continue in 2008 at 287 locations (220 from hydrogeology and geotechnical programs, and 67 from the small pools study). Table 5.1-2 shows a record of monitoring, Figure 5.1-2 shows the well and piezometer groundwater monitoring locations for 2004, 2005, 2006, 2007 and Figure 5.1-3 shows the locations planned for 2008. A summary of proposed 2008 monitoring wells and piezometers by drainage is presented in Table 5.1-3. These piezometers and monitoring wells will be monitored until the end of the 2008 field program, at which time some new monitoring locations will be added (up to 142 from the geotechnical program and up to possibly 80 from the hydrogeology program) and some will be discontinued.

• Packer testing to estimate hydraulic conductivity will continue in 2008 as described in the 2008 Field Sampling Plan.

• No additional field work is planned for the surficial geology mapping in 2008.

• Additional seeps and surface water quality sampling results will inform the groundwater hydrology program in 2008, as described in Chapters 6 (Water Quality) and 4 (surface water hydrology).

• Groundwater quality characterization will continue as more data become available in 2008. This data will be correlated to surface water and seepage water quality as well as climate and hydrologic variations.

General Considerations

• Meteorological data will continue to be reviewed and verified that data collection meets the needs of the groundwater hydrology program.

• The groundwater hydrology program will provide information to other programs, including the operations water balance, the site-wide mass balance, the pit lake study, bench-scale attenuation testing, and mine design. The objectives and methods are described in Section 5.1.5.2 Field Work “Input to Tasks by Others” in the 2007 Study Plan.

• The conceptual geologic and groundwater hydrology model preparation described in the 2007 Sampling Plan will continue in 2008. More detailed modeling is expected to be required in mine waste-management areas and within the mine area and will simulate groundwater flow directions and surface water-groundwater interaction.

• Additional resource drilling from 2007 and 2008 will provide additional lithologic and structural information that gives the background for producing a conceptual groundwater model for the study area.



• A summary of the tasks for the hydrogeology study for 2004, 2005, 2006, 2007 and 2008 is shown in Table 5.1-4.

TABLE 5.1-3 Summary of Monitoring Wells and Piezometers by Drainage

Drainage Sub-drainage

Water Level Monitoring

(Piezometers and Wells)

Sampling Wells

South Fork Koktuli

Upstream of Frying Pan Lake 70 11

Downstream of Frying Pan Lake 70 13

North Fork Koktuli 45 8

Upper Talarik Creek 35 6

Small Pools 67 0

TOTAL 287 38

5.2 Transportation Corridor No data on groundwater hydrology are being collected in the transportation corridor in 2008.



TABLES


Month J F M A M J J A S O N D J F M A M J J A S O N D

Notes

Table 5.1-2a Pebble Project

Period-of-Record Index, Groundwater Monitoring Locations, Mine Study AreaWells and Piezometers Upstream of Frying Pan Lake in South Fork Koktuli Watershed

Monitoring Site Year1

Sampling Water LevelsPeriod of Record by Task

20042005 ● ● constantly frozen or flowing2006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● Flowing--plugged with stopper in March2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ●2006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● Frozen/flowing between Oct 06-Apr 072008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● Often frozen until ~ April of each year2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●

GH05-61

GH05-63

GH05-60

Page 2 of 36


Notes





2004200520062007 ● ● ● ● ● frozen or flowing2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ● ● ● ● ● frozen or flowing2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ● ● ● ● ● plugged as of September2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ● ● ● ● ● plugged as of September2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ● ● ● ● ●

GH06-70S

GH06-70D

GH06-71A

GH06-72

GH06-74

2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ● ● ● ● ●

20008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 deep snow - wanded, but could not

20008 locate2004200520062007 ● deep snow - wanded, but could not

20008 ● ● ● ● ● ● ● ● ● locate2004200520062007 ● deep snow - wanded, but could not

20008 ● ● ● ● ● ● ● ● ● locate2004200520062007 ●

20008 ● ● ● ● ● ● ● ● ● ● could not locate due to deep snow2004200520062007 ●

20008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●

20008 ● ● ● ● ● ● ● ● ● ● ● ●2004

GH07-91

GH07-92D

GH07-92S

GH07-93

GH07-94

GH07-104

GH06-80

Page 3 of 36


Notes





200520062007 ● frozen

20008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ● plugged

20008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ● ● ● ● ● ● Monument damaged in August2006 ● ● ● ● ● ● ● ● ● ● ● ● Frozen for most of the year2007 ● ● ● ● ● ● ● ● ● ● ● ● Frozen for most of the year2008 ● ● ● ● ● ● ● ● ● ● ● ● Frozen for most of the year20042005 ● ● ● ● ● ● ● ● ● ● ● ● Strong sulfur smell2006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ● ● Flowing, extension in place as of July2006 ● ● ● ● ● ● ● ● ● ● ● Plugged/Frozen2007 ● ● ● ● ● ● ● ● ● ● ● ● Standpipe plugged to prevent artesian flow2008 ● ● ● ● ● ● ● ● ● ● ● ●

I-172

I-192

I-125

GH07-106

GH07-105

20042005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ● ● ●

2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●Well has shallow water: winter sampling was scheduled, but samples were not obtained. 3.14 ft extension as of May

2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● Standpipe plugged to prevent artesian flow2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2004 ● ● ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2004 ● ● ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●

KP-P3S/SRK-5S

KP-P4

M-110

M-12

KP-P3D/SRK-5D

KP-P3M/SRK-5M

I-201

Page 4 of 36


Notes





20042005 ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ● ● ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2004 ● ● ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2004 ● ● ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

MW-5D

MW-5M

MW-5S

M-21

M-62

2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ● August - new datum w/cap = 0.1 ft2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ● ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2004 ●

P-2M

P-3

P-4AD

P-4AS

MW-05-12D

MW-05-12S

P-2D

Page 5 of 36


Notes





2005 ● ● ● ● ● Piezometer damaged in April 2005, casing 2006 at surface needs repair200720082004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●

P-6D

P-4MID

Page 6 of 36


Notes





2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●

P-05-07D

P-05-07S

P-05-08

P-6M

P-6S

2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● Standpipe plugged to prevent artesian flow2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● Standpipe plugged to prevent artesian flow2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● Standpipe plugged to prevent artesian flow2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● Often frozen2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004

P-05-09S

P-05-20D

P-05-20S

P-05-21D

P-05-21M

P-05-21S

P-05-09D

Page 7 of 36


Notes





2005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●

P-05-29D

P-05-29D2

P-05-29M

Page 8 of 36


Notes





20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

P-05-36M

P-05-36S

PQ-4

P-05-29S

P-05-36D

2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● flowing/frozen2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● Frozen or flowing

KEY:GH = Geotechnical HoleMW = Monitoring WellP = PiezometerWL = Wetlands Location

NOTES:1. Work after April 2008 is planned, but not yet completed.

SRK-1A

PQ-8

PQ-9

Page 9 of 36

Month J F M A M J J A S O N D J F M A M J J A S O N D2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ● Monument damaged as of August2006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ● ● ● ● ● ● Monument damaged as of August2006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ●20082004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ● Monument damaged as of August2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ●20082004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ●2008 Dry2004 ●

GH04-03

GH04-05

GH04-04

GH04-10

GH04-11

Period of Record by Task Notes

Table 5.1-2b Pebble Project

Period-of-Record Index, Groundwater Monitoring Locations, Mine Study AreaWells and Piezometers Downstream of Frying Pan Lake in South Fork Koktuli Watershed


Sampling Water Levels

2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ● Monument damaged as of August2006 ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● Caved as of August 06 - remove from list?2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ● Monument at angle2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● almost always flowing/frozen2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● Monument damaged as of June2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●

GH04-14

GH04-16

GH04-17

GH04-12A

GH04-18

GH04-19

GH04-20

GH04-22

Page 10 of 36







2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ● Monument damaged as of August2006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ●2008

GH04-28

GH04-29A

Page 11 of 36







2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ●20082004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ● Monument damaged as of August2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ●20082004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●

GH04-30

GH04-32

GH04-31

GH04-33

GH04-35

2005 ● ● ● ● ● ● ● ● ● ● ● ● Monument damaged as of September2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● Monument damaged as of August2006 ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ●20082004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ● Monument damaged as of August2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● Frozen2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● Dry year round2007 ● ● ● ● ● ● ●20082004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ● Monument damaged as of July2006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● dry/frozen2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● typically dry2007 ● ● ● ● ● ● ● ● ● ● ● ●

GH04-44

GH04-39

GH04-41

GH04-42

GH04-43

GH04-37

GH04-38

GH04-45A

Page 12 of 36







2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ●200820042005 ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● Standing water2008

GH05-52

GH05-51

Page 13 of 36







2004200520062007 ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ● ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2004 ● ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2004 ● ●2005

MW-1D

MW-1M

GH06-77

GH06-76

GH06-75

2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2004 ● ● ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

2004 ● Well was scheduled to be sampled, but excessive silt prevents sampling

2005 ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●

2004 ● Well was scheduled to be sampled, but excessive drawdown (due to silt) prevents sampling

2005 ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●

2004 Well was scheduled to be sampled, but excessive silt prevents sampling

2005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● Dry/frozen all 2007 dates2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2004 ● ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2004 ● ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

MW-1S

MW-2D

MW-05-2M

MW-2S

MW-05-2SR

MW-3D

MW-11D

Page 14 of 36







2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2004 ● ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

MW-11M

MW-11S

Page 15 of 36







20042005 ● ● ● ● ●

2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● Well has shallow water: winter sampling was scheduled, but sample was not obtained

2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

MW-05-11SS2

MW-05-13D

MW-05-13S

MW-05-14D

MW-05-14S2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ●

P-05-10S

P-05-11D

P-05-11M

P-05-11S

P-05-12

P-05-13

P-05-10D

Page 16 of 36







2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● Frozen/dry all 2007

P-05-14D

P-05-14S

P-05-15D

Page 17 of 36







20042005 ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ●2004

P-05-16S

P-05-16SS

P-05-15S

P-05-16D

P-05-16M

20042005 ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●

P-05-22D

P-05-23

P-05-24D

P-05-17D

P-05-17S

P-05-19D

P-05-19S

P-05-18

Page 18 of 36







2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●

P-05-25

P-05-24S

Page 19 of 36







20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ●2004

P-05-26D

P-05-26M

P-05-26S

P-05-27D

P-05-27M

20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ●



P-05-27S

Page 20 of 36

Month J F M A M J J A S O N D J F M A M J J A S O N D2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ●2008 Caved in2004 ●2005 ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● frozen/flowing2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ● Monument damaged as of August2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●

Table 5.1-2c Pebble Project

Period-of-Record Index, Groundwater Monitoring Locations, Mine Study AreaWells and Piezometers in North Fork Koktuli Watershed


GH04-01

Sampling Water LevelsPeriod of Record by Task Notes

GH05-57

GH04-23

GH04-25

GH04-08

2004200520062007 ● ● ● ● ● wrench in monument2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ● ● ● ● ● no monument2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● Could not located due to deep snow; wanded2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●

GH06-69

GH06-68

GH06-67

GH06-66

GH07-81

GH07-82D

GH07-82S

GH07-83D

Page 21 of 36






2008 ● ● ● ● ● ● ● ● ● ● ● ● frozen2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ● frozen2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ● frozen2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ● frozen

GH07-87D

GH07-83S

GH07-84

GH07-85

GH07-86

2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●2008 ● ● ● ● ● ● ● ● Deep snow; wanded but couldn’t locate2004200520062007 ●2008 ● ● ● ● ● ● ● ● Deep snow; wanded but couldn’t locate20042005200620072008 ● ● ● ● ● ● ● ● Deep snow; wanded but couldn’t locate20042005200620072008 ● ● ● ● ● ● ● ● Deep snow; wanded but couldn’t locate2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●

GH07-87S

GH07-88

GH07-89D

GH07-96D

GH07-89S

GH07-90D

GH07-90S

GH07-95

Page 22 of 36






2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● Deep snow; wanded but couldn’t locate2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● Deep snow; wanded but couldn’t locate

GH07-96S

GH07-97D

GH07-97S

GH07-98D

GH07-98S

p ;20042005200620072008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ● dry well2004 ● ● ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

MW-6D

GH07-103S

GH07-101

GH07-102D

GH07-102S

GH07-103D

GH07-99

GH07-100

Page 23 of 36






2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2004 ● ● ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2004 ● ● ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2004 ● ● ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2004 ● ● ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2004 ● ● ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

MW-7D

MW-7S

MW-8D

MW-8M

MW-8S

2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

Page 24 of 36






2004 ● ● ●

2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● Well has shallow water: winter sampling was scheduled, but samples were not obtained

2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● Standpipe plugged to prevent artesian flow2004 ● ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●



MW-10

MW-9D

Page 25 of 36

Month J F M A M J J A S O N D J F M A M J J A S O N D2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● Monument damaged as of August2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005200620072008 no piezo2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008

GH04-02

GH06-78

GH05-64

KP-P1/SRK-2

GH04-13

Notes

Table 5.1-2d Pebble Project

Period-of-Record Index, Groundwater Monitoring Locations, Mine Study AreaWells and Piezometers in Upper Talarik Watershed



2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

2004 Well was scheduled to be sampled, but lack of water precluded sampling

2005 ● ● ● ● ● ● ● ● ● ● ● ● No monument2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●

P-05-31S

MW-4 (Stand 1)

P-05-28D

P-05-28S

P-05-30D

P-05-30S

P-05-31D

Page 26 of 36


Notes





20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ● Well caved in December2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●

P-05-32D

P-05-35D

P-05-33D

P-05-34D

Page 27 of 36


Notes





200420052006 ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● Standpipe plugged to prevent artesian flow200420052006 ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●

P-06-37S

P-06-37M

P-06-37D

P-06-38M

P-06-38D

200420052006 ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● Standpipe plugged to prevent artesian flow200420052006 ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● Plugged, casing flush with ground200420052006 ● ● ● ● ● typically frozen2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● typically frozen2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ●P-06-41S

P-06-41M

P-06-41D

P-06-40S

P-06-40M

P-06-40D

P-06-39S

P-06-39D

Page 28 of 36


Notes





2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ● dry2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ● dry2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006

P-07-46D

P-07-47D

P-07-44D

P-07-44S

P-07-45D

2007 ●2008 ● ● ● ● ● ● ● ● ● ● ● ● Monument needs to be fixed2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●



SRK-3

SRK-2A

Page 29 of 36

Month J F M A M J J A S O N D J F M A M J J A S O N D200420052006 ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● Stake down, couldn't locate after Dec2008 ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● tends to be in deep water2008 ● ● ● ● ● ● ● ● ● making it inaccessible.200420052006 ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● Staff gage often not visable (snow)2008 ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ●


Table 5.1-2ePebble Project

Period-of-Record Index, Groundwater Monitoring Locations, Mine Study AreaPiezometers Installed for Wetlands Study



WL-P01S

WL-S01D

WL-P01D

WL-S01G

WL-S01S

2008 ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● often dry2008 ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● often frozen2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● typically frozen2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● Stake down, could not locate

WL-P02S

WL-S02D

WL-S02G

WL-S02S

WL-P03D

WL-P03S

WL-P02D

Page 30 of 36







200420052006 ● ● ● ● ● ● ● tilted @ 30 degree angle2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ●

WL-S03D

WL-S03G

Page 31 of 36

Month J F M A M J J A S O N D J F M A M J J A S O N D20042005 ● ● ● ● ● ● ● ● Monument noted as damaged in August2006 ● ● ● ● ● ● ● ● ● ● ● Jacked in July2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● Last measurement notes 'dry/caved'20082004 ●2005 ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●2005 ● ● ● ● ● ● ● ● ● ● ● ● Monument Damaged in July2006 ● ● ● ● ● ● ● ● ● ● ● ●

GH04-06

GH04-26

GH04-27

GH04-46

GH04-47

Notes





2007 ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004 ●

2005 ● ● ● ● ● ● ● ● ● ● ● ● Frost Jacking damage in May, 0.95 ft PVC cut off in July

2006 ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ●20042005 ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● last measurement in July200820042005 ● ●2006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● last measurement in July200820042005 ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● last measurement in July200820042005 ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●20042005 ● ●2006 ● ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●

GH05-53

GH05-54

GH05-55

GH05-56

GH04-48

GH05-58

GH05-59

Page 1 of 36







200420052006 ● ● ● ● ● ● ● ● ● tilted @ 30 degrees2007 ● ● ● ● ● ● ● ● ● ● ● ● needs to be fixed2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● Stake down, could not locate200420052006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● Stake down, could not locate200420052006 ● ● ● ● Well stand down as of June20072008200420052006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ●

WL-S03S

WL-S04G

WL-S04D

WL-P04S

WL-P04D

2008 ● ● ● ● ● ● ● ●200420052006 ● ● ● ● Well stand down as of June20072008200420052006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● often frozen/dry2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ● ● often dry2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● in pond200420052006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● Stake down, could not locate200420052006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ● often dry2008 ● ● ● ● ● ● ● ● ● ● ● ●

WL-P06S

WL-P06D

WL-S05S

WL-S05D

WL-P05S

WL-P05D

WL-S04S

Page 32 of 36







200420052006 ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● out of water, jacked too tall to 2008 ● ● ● ● ● ● ● ● measure as of June 06200420052006 Gage out of water or not visable20072008200420052006 ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● Jacked out of water as of June2008200420052006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ● ● typically dry2007 ● ● ● ● ● ● ● ● ● ● ● ●

WL-S06D

WL-S06G

WL-S06S

WL-P07D

WL-P07S

2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ●2007 ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ●2007 ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ● ● dry/frozen2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ● ●2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●

WL-S07G

WL-S07S

WL-P08D

WL-P08S

WL-S07D

WL-P09D

WL-P09S

Page 33 of 36







200420052006 ● ● ● ● ● ● ● ● ● ● ● dry/frozen2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ● ● dry/frozen2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ● ● often frozen/dry2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●200420052006 ● ● ● ● ● ● ● ● ● ● ● often frozen/dry2007 ● ● ● ● ● ● ● ● ● ● ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ● ●

WL-P10D

WL-P10S

WL-P11S

WL-P15D

WL-P11D

2008 ● ● ● ● ● ● ● ● Wanded but couldn't locate in snow2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● Gage not visable2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● Wanded but couldn't locate in snow2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● ● Wanded but couldn't locate in snow2004200520062007 ●2008 ● ● ● ● ● ● ● ● Could not locate2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● Wanded but couldn't locate in snow2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●

WL-P16D

WL-P16G

WL-P16S

WL-P17D

WL-P15G

WL-P15S

WL-P17S

Page 34 of 36







2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ●2008 ● ● ● ● ● ● ● ● Gage not visable2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ● ●

WL-P19D

WL-P19S

WL-P18D

WL-P18G

WL-P18S

2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● Frozen2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● Gage not visable2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● Frozen2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● Frozen2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● Gage not visable2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● Frozen2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● Wanded but couldn't locate in snow

WL-P20D

WL-P20G

WL-P22D

WL-P20S

WL-P21D

WL-P21G

WL-P21S

Page 35 of 36







2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● ● Wanded but couldn't locate in snow2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● ● Wanded but couldn't locate in snow2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● Wanded but couldn't locate in snow2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ● ●

WL-P23D

WL-P23S

WL-P24D

WL-P24S

WL-P22S

2008 ● ● ● ● ● ● ● ● ● ● ● ●2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● Frozen2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● Frozen2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● ● Wanded but couldn't locate in snow2004200520062007 ● ●2008 ● ● ● ● ● ● ● ● ● ● ● ● Frozen



WL-P26S

WL-P26D

WL-P25D

WL-P25S

Page 36 of 36

TABLE 5.1-4Pebble Project Environmental Studies

Study Summary for Groundwater Hydrology, Mine Study Area, 2004-2008Consultant: Water Management Consultants

2004 2005 2006 2007 2008 Discipline Data Collected or Tasks Data Collected or Tasks Data Collected or Tasks Data Collected or Tasks Tasks to be CompletedGroundwater Hydrology Field Work Field Work Field Work Field Work Field WorkMine Studies Area Input to Tasks by Others Input to Tasks by Others Input to Tasks by Others Input to Tasks by Others Input to Tasks by Others

Meetings Data Review and Analysis Data Review and Analysis Data Review and Analysis Data Review and AnalysisGroundwater Recharge Analysis Groundwater Recharge Analysis Site Water Balance Site Water Balance

Pit Dewatering and Impacts Pit Dewatering and Impacts Site-wide Groundwater Model Site-wide Groundwater ModelTailings Area HydroImpacts

geology and Tailings Area HImpacts

ydrogeology and Pit and UndGroundwat

erground er Model

Pit and Underground Groundwater Model

Groundwater SupplyAssessment

Meetings Tailings ArModel

ea Groundwater Tailings Area Groundwater Model

Meetings Reporting Class V InjAssessmen

ection Wells t

Class V Injection Wells Assessment

Groundwater Quality Groundwater QualityReporting Meetings Meetings

Reporting Reporting



FIGURES

1,300,000

1,300,000

1,325,000

1,325,000

1,350,000

1,350,000

1,375,000

1,375,000

1,400,000

1,400,000

1,425,000

1,425,000

1,450,000

1,450,000

1,475,000

1,475,000

1,500,000

1,500,000

2,02

5,00

02,

050,

000

2,07

5,00

02,

100,

000

2,12

5,00

02,

150,

000

2,17

5,00

02,

200,

000

2,22

5,00

0

File:\\Manu\projects\Pebble\scope schedule & budget\2008\Study Plan\Figure 5.1-1 Study Area.mxd

Legend

Canada

ARCTIC OCEAN

PebbleProject Area

GU LF OF ALASKA

Russia

BERING SEA

0 15,000 30,000 45,000 60,000Feet

Alaska State Plane Zone 5 (units feet)1983 North American Datum

1:371,390Scale

Figure 5.1-1

2008 Study PlanGroundwater Studies

Mine Study Area

Project No: 7126

Version: 1

Date: May 27, 2008

Author: WMC-LC

0 3,000 6,000 9,000 12,000Meters

South Fork Koktuli River

Upper Talarik Creek

Frying Pan Lake

North Fork Koktuli River General Deposit Location

General Deposit Location

Lakes

Rivers

50-ft Contour Interval

Study Area

Iliamna Lake


North Fork Koktuli River

Upper TalarikC

reek

WL-P26S

WL-P26D

WL-P25S

WL-P25DWL-P24S

WL-P24D

WL-P23S

WL-P23DWL-P22S

WL-P22D

WL-P21S WL-P21GWL-P21D

WL-P20SWL-P20G

WL-P20DWL-P19S

WL-P19D

WL-P18S

WL-P18DWL-P17S WL-P17D

WL-P16S

WL-P16D

WL-P15SWL-P15G

WL-P15D

WL-S06D

WL-S06G

WL-S05D

WL-S05S

WL-S03D WL-S04D

WL-S02S

WL-S01D

WL-S01SWL-P03S

WL-P01S

WL-P01D

WL-P02D

WL-P04S

WL-P04D

WL-P05DWL-P06S

WL-P06D

WL-P08DWL-P09D

WL-S07G

WL-P10DWL-P11S

WL-P11D

P08-57

P08-56P08-55

P08-54

P07-53

P07-52

P07-51

P07-50

P07-49

P07-48

P07-47

P07-46

P07-45

P07-44

P07-43

P07-42

GH07-106GH07-105 GH07-104

GH07-103

GH07-102

GH07-101

GH07-100

GH07-099

GH07-098

GH07-097

GH07-096

GH07-095

GH07-094

GH07-093GH07-092

GH07-091

GH07-090

GH07-089

GH07-088

GH07-087

GH07-086

GH07-085

GH07-084

GH07-083

GH07-082

GH07-081

SRK-7

SRK-6

P-06-41

P-06-40

P-06-39

P-06-38

P-06-37

SRK-3

SRK-1

PW-8

PW-7

PW-6

PW-5

PW-4

PW-3

PW-1APQ-9

PQ-8PQ-4

P-6

P-4

P-3

P-2

P-1

P-05-36

P-05-35

P-05-34

P-05-33

P-05-32

P-05-31

P-05-30

P-05-29P-05-28

P-05-27

P-05-25

P-05-24

P-05-23

P-05-22

P-05-21 P-05-20

P-05-19P-05-18

P-05-17

P-05-16

P-05-15

P-05-14P-05-13

P-05-12

P-05-11

P-05-10

P-05-09

P-05-08

P-05-07

MW-9

MW-8

MW-7

MW-6

MW-5

MW-4

MW-3

MW-2

MW-11

MW-10

MW-1

MW-05-02

MW-05-14

MW-05-13

MW-05-12

M-62

M-21

M-12

M-110

KP-P4

KPP-2/SRK-4

KPP-1/SRK-2

KP-04

I-201I-192

I-172

I-125

GH06-80GH06-79

GH06-78

GH06-77GH06-76

GH06-75

GH06-74GH06-73GH06-72

GH06-71A

GH06-71

GH06-70

GH06-69GH06-68

GH06-67GH06-66

GH06-65

GH05-65

GH05-64

GH05-63GH05-62GH05-61GH05-60

GH05-59

GH05-58

GH05-57

GH05-56

GH05-55

GH05-54

GH05-53

GH05-52

GH05-51

GH04-48 GH04-47GH04-46

GH04-45A

GH04-44GH04-43

GH04-42

GH04-41

GH04-40A

GH04-39

GH04-38GH04-37 GH04-36

GH04-35

GH04-34

GH04-33

GH04-32

GH04-31

GH04-30

GH04-28

GH04-27

GH04-26

GH04-25

GH04-24

GH04-23

GH04-22

GH04-21 GH04-20

GH04-19

GH04-18

GH04-17GH04-16

GH04-15

GH04-14

GH04-13

GH04-12A

GH04-11

GH04-10

GH04-09

GH04-08

GH04-07

GH04-06

GH04-05GH04-04

GH04-03

GH04-02GH04-01

1,350,000

1,350,000

1,360,000

1,360,000

1,370,000

1,370,000

1,380,000

1,380,000

1,390,000

1,390,000

1,400,000

1,400,000

1,410,000

1,410,000

1,420,000

1,420,000

1,430,000

1,430,000

1,440,000

1,440,0002,11

0,00

02,

120,

000

2,13

0,00

02,

140,

000

2,15

0,00

02,

160,

000

2,17

0,00

02,

180,

000

File: \\Manu\projects\Pebble\scope schedule & budget\2008\study plan\Figure 5.1-2 Existing Well Locations.mxd

Legend

Canada

ARCTIC OCEAN

PebbleProject Area

GULF OF A LASKA

Russia

BERING SEA

0 5,000 10,000 15,000 20,000Feet


Date: May 27, 2008

Author: WMC-LC

1:94,231Scale

Project No: 7126

Version: 1

DRAFT

Monitoring Well (MW)Piezometer (P, GH, I, M)Pumping Well (PW)Wetland Piezometer (WL)General Deposit LocationLakesRivers50-ft Contour Interval

WatershedNorth Fork Koktuli RiverSouth Fork Koktuli RiverUpper Talarik Creek

Figure 5.1-2Existing Well and Piezometer

Locations


Mine Study Area

0 1,000 2,000 3,000 4,000Meters


North Fork Koktuli River

Upper TalarikCreek

HH08-ZHH08-YHH08-X

HH08-W

HH08-V

HH08-U

HH08-THH08-S

HH08-R

HH08-QHH08-P

HH08-O

HH08-N

08-M

HH08-L

HH08-K

HH08-J

HH08-I

HH08-H

HH08-G

HH08-F

HH08-E

HH08-D

HH08-C

HH08-B

HH08-A

HH08-AQ

HH08-AP

HH08-AO

HH08-AM

HH08-AI

HH08-AH

HH08-AG

HH08-AF

HH08-AE

HH08-AD

HH08-ANHH08-AL

HH08-AK HH08-AJ

HH08-AC

HH08-AB

HH08-AA

GH08-EW

GH08-EUGH08-ET

GH08-ES

GH08-ER

GH08-EQGH08-EP

GH08-EO

GH08-EN

GH08-EM

GH08-EL

GH08-EK

GH08-EJGH08-EI

GH08-EH

GH08-EG

GH08-EF

GH08-EE

GH08-EDGH08-EC

GH08-EB

GH08-EA

GH08-EV

GH08-Z

GH08-Y

GH08-X

GH08-W

GH08-VGH08-U

GH08-T

GH08-S

GH08-R

GH08-QGH08-P

GH08-O

GH08-N

GH08-M GH08-L

GH08-K

GH08-J

GH08-IGH08-H

GH08-G

GH08-F

GH08-E

GH08-DGH08-C

GH08-B

GH08-A

GH08-DO

GH08-DN

GH08-DM

GH08-DL

GH08-DK

GH08-DJGH08-DI

GH08-DH

GH08-DG

GH08-DF GH08-DE GH08-DC

GH08-DB

GH08-DA

GH08-CZ

GH08-CY

GH08-CX

GH08-CW

GH08-CV

GH08-CU

GH08-CT

GH08-CS

GH08-CRGH08-CQ

GH08-CP

GH08-CO

GH08-CN

GH08-CM

GH08-CLGH08-CK

GH08-CJGH08-CI

GH08-CHGH08-CG

GH08-CF

GH08-CE

GH08-CC

GH08-CB

GH08-CA

GH08-BZ

GH08-BY

GH08-BX

GH08-BWGH08-BV

GH08-BU

GH08-BT

GH08-BSGH08-BR

GH08-BQ

GH08-BP GH08-BO

GH08-BN

GH08-BM

GH08-BLGH08-BK

GH08-BJ

GH08-BI

GH08-BH

GH08-BG

GH08-BF

GH08-BE

GH08-BD

GH08-BC

GH08-BB

GH08-BA

GH08-AZ

GH08-AY

GH08-AX

GH08-AW

GH08-AV

GH08-AU

GH08-AT

GH08-ASGH08-AR

GH08-AQ

GH08-AP

GH08-AN

GH08-AM

GH08-AL

GH08-AK

GH08-AJ

GH08-AI

GH08-AH

GH08-AG

GH08-AF

GH08-AE

GH08-AD

GH08-AC

GH08-AB

GH08-AA

GH08-DD

GH08-CD

GH08-AO

1,360,000

1,360,000

1,370,000

1,370,000

1,380,000

1,380,000

1,390,000

1,390,000

1,400,000

1,400,000

1,410,000

1,410,000

1,420,000

1,420,000

1,430,000

1,430,000

1,440,000

1,440,000

1,450,000

1,450,000

2,12

0,00

02,

130,

000

2,14

0,00

02,

150,

000

2,16

0,00

02,

170,

000

2,18

0,00

02,

190,

000

2,20

0,00

0

File: \\Manu\projects\Pebble\scope schedule & budget\2008\study plan\Figure 5.1-3 Proposed Well Locations.mxd

Legend

Canada

ARCTIC OCEAN

PebbleProject Area

GULF OF A LASKA

Russia

BERING SEA

0 5,750 11,500 17,250 23,000Feet


Date: June 23, 2008

Author: WMC-LC

1:101,273Scale

Project No: 7126

Version: 2

DRAFT

HH08 - Hydrogeology HoleGH08 - Geotechnical HoleRiversGeneral Deposit Location

WatershedNorth Fork Koktuli RiverSouth Fork Koktuli RiverUpper Talarik CreekLakes50-ft Contour Interval

Figure 5.1-3Proposed Well and Piezometer

Locations


Mine Study Area

0 1,000 2,000 3,000 4,000Meters

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