Certified_Final_Tech_Specs_Volume_2F_-_GBR_Appendix_F.pdf

W911WN-13-R-0002

East Branch Lake East Branch Clarion River Elk County, Pennsylvania Dam Safety Modifications/Cutoff Wall

Certified Final Document Volume 2F – Geotechnical Baseline Report, Appendix F April 2013

Appendix F

Discontinuity Data

Fracture Logs: Fracture logs from the 2009 Geotechnical Data Report for Subsurface Exploration and 3D Model Development. Fracture logs are included for piezometers 08-EBD-71 through 08- EBD-74 and 08-EBD-78A.

Borehole Imaging: Down hole camera borehole images were performed during the 2011 and 2012 Explorations. Two holes (E-29 and E-30) were imaged and presented in the 2011 Geotechnical Exploration and Phase II Environmental Site Investigation Summary Report.

Image logs from this report include the image in the first column, projection of the fracture as a sine wave in the center column, and a representation of the dip and dip direction in the last column.

All holes (E-39 through E-47 and E-50 through E-59) were imaged during the 2012 exploration.

The image log from the 2012 Geotechnical Data Report includes basic hole data including hole location and inclination, as well as depth and rock description in the first column, RQD and recovery in the second column, the image with fracture sine waves in the next column, pressure test results, dip, dip direction and aperture in the last columns.

Fracture Tables: Tables of raw fracture data retrieved from the borehole images from the 2011 Geotechnical Exploration and Phase II Environmental Site Investigation Summary Report and 2012 Geotechnical Data Report are provided. Tables are provided by boring and include depth, dip, dip direction, and aperture. On 27 Oct. 2010, joint measurements were taken by an LRP Geologist on outcrops above the outlet tunnel and the upstream end of the spillway weir crest. A table is provided of the measured data including elevation, strike, dip, and general rock description.

Stereonets: Stereonets for all of the imaged holes and outcrop measurements listed are provided.

A stereonet was created for each of the imaged holes, as well as, six stereonets for the different areas of the dam; right abutment, valley, left abutment, spillway section dogleg, outlet tunnel outcrop, and spillway outcrop.

Discontinuity Spacing: Figures depicting fracture spacing were developed based on borehole image results from borings E-29, E-30, E-39 through E-47, and E-50-E-59. A scatterplot was developed for each borehole depicting the discontinuity spacing profile. The distance between discontinuities was plotted at the elevation corresponding to the lower discontinuity. This data includes all discontinuities identified in through the borehole image process, including zero aperture fractures and bedding planes.

Discontinuity Spacing Table: From the Discontinuity Spacing Plots, fractures larger than 3 ft were tabulated for all boreholes. Tabulation for each boring includes the depth and elevation of the discontinuity, the discontinuity spacing, and aperture. Those discontinuities with a spacing in excess of 10 ft are highlighted in the table.

Fracture Log

08-EBD-71

08-EBD-72

08-EBD-73

08-EBD-74

08-EBD-78A

Borehole Imaging upper 5 ft of the images because of magnetic interference from augers.

203 Page 11

230 ft

Q U

A D

W ilcox

A

PI N

O

N /A

230 ft 77 ft

W

ELL ID

E-30

K .B

TY

PE LO

G

STAT Pennsylvania

H

TA

/78.5 ft

LO

G

G

IN

G D

A

TE

O ptical Teleview er A coustic Teleview er

W

ITN

ESSED

B

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D R

ILLIN

G

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78 ft

D .F.

ELEV

A

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TM

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G

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V A

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V

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C A

SIN

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SIZE/D

EPTH

(ft)

API N/A

10.45 deg W

FIELD

C O

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PA

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R U

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C A

SIN

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B IT SIZE (inch)

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A R

M D

EPTH

(ft)

C O

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Elk

TY

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ID

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M A

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N (deg) SEC

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FLD

A B

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EPTH

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(ft)

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T:

COMP Rhea

TW

P:

STA

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Pennsylvania

R

EC

O R

D

ED

B Y

TO

P LO

G G

ED

IN

TER

V

A L (ft)

5/3/11

CNTY Elk

230 ft

WELL E-30

Plane Type

Open Fracture Bedding / Foliation Filled Fracture

Depth

1in:1ft

Acoustic Amplitude

0° 0°180°90° 270°

Acoustic Travel Time

0° 0°180°90° 270°

Optical View

0° 0°180°90° 270°

Plane Projection

0° 0°180°90° 270°

Dip & Dip Direction

0 90

Tensil Fractures

0° 0°180°90° 270°

79 Plane orientations not shown in the upper 5 ft of the images because of pp g magnetic interference from casing.

185 Page 11

DEGREES FROM VERTICAL

Geologic Image and Structure Log deg.

ft ft ft ft

Bedded sand or sandstone Silt, siltstone or silty shale Sandy or silty shale Limestone

Fracture

PROJECT:

EAST BRANCH DAM - GEOTECHNICAL

DRILLING AND SITE INVESTIGATION

VERTICAL

BACK STA.X

HOLE NO: E-39

INCLINEDX

DATE HOLE:

TOTAL DEPTH OF HOLE: 278.0'

ELEV. TOP OF HOLE: 1707.2'

DIRECTION OF HOLE:

COMPLETED: 1/26/2012BEARING 300AHEAD STA.

STARTED: 11/15/2011

DEPTH DRILLED INTO ROCK: 262.5'

LOCATION:

STA: 7+02.44

OFF: 2.96' D/S

THICKNESS OF OVERBURDEN: 15.5'

Depth

1ft:20ft

Description Pressure Test

1 10000Lu

Lithology RQD

0 100%

Recovery

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

15.5

Overburden

25.5

Light grayish brown to light brown SANDSTONE, v.

fine grained, moderately hard, slightly weathered, micaceous, laminated to very thin bedding, siltstone laminae

32.6

Gray SANDSTONE, hard, slightly weathered to fresh,

v. fine to fine grained, thin to medium bedded, localized clasts of siltstone and shale

35.3

Light gray to light brown SANDSTONE, hard, slightly weathered, to v.

fine grained, laminated to

v. thin bedding, localized caclareous matrix

Light gray SANDSTONE, Depth

1ft:20ft

Description Pressure Test

1 10000Lu

Lithology RQD

0 100%

Recovery

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

54.8

Light gray SANDSTONE, hard, slightly weathered to unweathered, fine grained, thin to medium bedded, localized clasts of siltstone and shale

60.1

Dark to light gray SANDSTONE, hard, slightly weathered to fresh, laminated to v. thin bedded, siltstone and shale laminae, micaceous, local clasts of pyrite, fine grained

Dark to light gray SANDSTONE, hard, slightly weathered to fresh, thin to medium bedded, siltstone and shale

Description Pressure Test

1 10000Lu

Lithology RQD

0 100%

Recovery

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

72.0 siltstone and shale laminae, micaceous, local clasts of pyrite, fine grained

78.5

Gray to dark gray SILTSTONE, hard, unweathered to slightly weathered, contains darker gray shaley laminations

83.0

Gray to light gray SANDSTONE, micaceous, hard, unweathered to moderately weathered, with shaley gray to dark gray laminations

Gray to light gray, SILTSTONE, moderately hard to hard, highly fractured to broken, moderately weathered, v.

thinly bedded, contains clay seams, some iron stained joint surfaces

Description Pressure Test

1 10000Lu

Lithology RQD

0 100%

Recovery

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

90.4

94.0

Dark to light gray SANDSTONE, hard, slightly weathered to fresh, moderately fractured, thinly bedded with v. thin bedded siltstone, shale laminations, micaceous, some pyrite, fine grained

101.4

Medium to dark gray SHALE, slightly weathered, iron stained fracture surfaces, moderately hard,

v. thin to thinly bedded, highly to moderately fractured

102.8

101.4'-102.8': Core Loss Zone

109.0

103.0'-104.8': Sandy SHALE Interval, sand stone laminae

Dark to light gray SANDSTONE, slightly weathered to fresh, silty shale laminae, micaceous,

v. thin to thinly bedded

Description Pressure Test

1 10000Lu

Lithology RQD

0 100%

Recovery

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

133.7

134.1

Dark gray SHALE, soft to moderately hard, unweathered

Light gray to gray

SANDSTONE,

unweathered to slightly weathered, hard, contains shale streaks or laminations thinly to medium bedded, micaceous, fine to medium grained, local pyrite inclusions

Description Pressure Test

1 10000Lu

Lithology RQD

0 100%

Recovery

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

146.0

146.5

Dark gray to gray SHALE, moderately hard, moderately weathered, broken, laminated to v. thin bedded

Light gray to gray

SANDSTONE,

unweathered to slightly weathered, contain shale streaks or laminations, pyrite inclusions, micaceous, thinly to medium bedded, fine to medium grained

Description Pressure Test

1 10000Lu

Lithology RQD

0 100%

Recovery

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

164.3

170.5

Dark gray to gray SHALE, slightly weathered, moderately hard to soft, broken to moderately bedded, v. thinly bedded

179.7

Dark gray SHALE with planar to wavy sandstone streaks/laminae, moderately hard to hard, moderately fractured, thinly to medium bedded, sandstone, fine grained

179.9

179.7'-179.9':

Conglomeratic LIMESTONE, calcareous, moderately hard, slightly weathered

181.7

Dark gray SHALE with planar to wavy sandstone streaks/laminae, moderately hard to hard, moderately fractured, thinly to medium bedded, sandstone, fine grained

182.4

181.7'-182.4': Calcareous sandstone interbeds with fossil fragments

Dark gray SHALE with planar to wavy sandstone streaks/laminae, moderately hard to hard, moderately fractured, thinly to medium bedded, sandstone, fine grained

Description Pressure Test

1 10000Lu

Lithology RQD

0 100%

Recovery

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

204.0

205.2

Gray to light gray LIMESTONE, fossil fragments, moderately hard to hard, unweathered, v thinly bedded, highly fractured

206.0

Core Loss (0.8')

209.5

Gray to light gray LIMESTONE, fossil fragments, moderately hard to hard, unweathered, v thinly bedded, highly fractured

211.6

Gray to light gray SANDSTONE, hard, unweathered, v. thinly bedded, dark gray shaley laminae

213.0

Dark gray SHALE with light gray Sandstone interbeds or laminae, moderately hard, unweathered

Light gray SANDSTONE with dark gray shale interbeds or laminae, hard, Description Pressure Test

1 10000Lu

Lithology RQD

0 100%

Recovery

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

222.6 interbeds or laminae, hard, unweathered, thinly to very thinly bedded, fine grained

235.9

Dark gray SHALE with sandy laminae with calcareous zones, unweathered, shale is soft to moderately hard, calcareous zones moderately hard, thin to medium bedded

237.1

Light gray LIMESTONE, very hard, crystalline, unweathered, conglomeratic from 236.8'-237.1'

Gray SANDSTONE with dark gray, shale laminae, moderately hard to hard, unweathered, thinly to medium bedded

Description Pressure Test

1 10000Lu

Lithology RQD

0 100%

Recovery

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

254.2

256.3

Dark gray SHALE, soft, unweathered, contains thin clay film on some fractures,

v. thinly bedded, highly fractured

258.4

Light gray SANDSTONE with micaceous dark gray shale laminations, hard to

v. hard, unweathered calcareous from 256.3'-257.0'

Dark gray SHALE, soft, unweathered, thinly to medium bedded, smooth fracture surfaces

Description Pressure Test

1 10000Lu

Lithology RQD

0 100%

Recovery

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

267.6

270.9

Dark gray SHALE with light gray sandstone interbeds, unweathered, hard, medium bedded, slightly fractured (mostly shale from 268.0'-269.2')

271.8

Light gray LIMESTONE, crystalline, very hard, unweathered

278.0

Dark gray SHALE, soft, unweathered, thinly to medium bedded, smooth fracture surfaces deg.

ft ft ft ft

Bedded sand or sandstone Silt, siltstone or silty shale Sandy or silty shale Limestone

Fracture

BACK STA.X

VERTICAL

PROJECT:

EAST BRANCH DAM - GEOTECHNICAL

DRILLING AND SITE INVESTIGATION

INCLINEDX

HOLE NO: E-40

DATE HOLE:

TOTAL DEPTH OF HOLE: 272.8

ELEV. TOP OF HOLE: 1707.1'

BEARING 299 COMPLETED: 02/08/2012

DIRECTION OF HOLE:

AHEAD STA.

STARTED: 11/10/2011

DEPTH DRILLED INTO ROCK: 204.3'

LOCATION:

STA:7+82.6

OFF:1.4'D/S

THICKNESS OF OVERBURDEN: 68.5'

Depth

1ft:20ft

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Image and Structure Log

0° 0°180°90° 270°

Aperture

360 0mm

68.5

Overburden

71.7

Light brown SHALE, highly weathered, soft, micaeous, friable

82.8

SANDSTONE, moderately weathered, soft to moderately hard, v. thin to thinly bedded, joint surfaces, slightly rough to rough, joint surfaces iron stained and some contain clay film, micaceous, some fractures contain grout at 71.9' and 77.4'

Gray to brownish gray SILTSTONE, iron stained, moderately weathered, moderately hard, thinly to

v. thinly bedded

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Image and Structure Log

0° 0°180°90° 270°

Aperture

360 0mm

90.3

109.0

Medium to dark gray SHALE, soft, moderately hard to soft, v. thinly bedded, highly fractured to broken, slightly weathered with iron staining 90.3'-92.8': Broken with soft clay

Dark gray to olive gray SANDSTONE with silty shale laminae, iron stained fractures, micaceous, v.

thin to thinly bedded, sandstone is hard but easily breaks upon shale partings, sandstone is fine grained

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Image and Structure Log

0° 0°180°90° 270°

Aperture

360 0mm

139.4

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Image and Structure Log

0° 0°180°90° 270°

Aperture

360 0mm

139.4

144.5

SANDSTONE, ligh gray with shale streaks/laminae, hard, slightly weathered

145.6

Dark gray SHALE, moderately hard, moderately weathered, v.

thinly bedded

158.6

Light gray SANDSTONE with shale streaks/laminae, medium grained, hard, micaceous, slightly weathered to unweathered

Dark gray SHALE, soft, slightly weathered, thinly bedded to v. thinly bedded, broken to moderately fractured

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Image and Structure Log

0° 0°180°90° 270°

Aperture

360 0mm

165.6

175.0

Gray to dark gray SHALE with planar to wavy sandstone laminae/streaks, bioturbated

177.1

Light gray LIMESTONE, conglomeratic and crystalline, contains rounded quartz pebbles, hard to v. hard, slightly weathered, fossiliferous containing crinoids

Dark gray SHALE with light gray interbedded sandstone, thinly to medium bedded, moderately hard (sandstone) to soft (shale), sandstone interbeds, calcareous

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Image and Structure Log

0° 0°180°90° 270°

Aperture

360 0mm

201.5

204.8

Gray to light gray LIMESTONE, hard, fossiliferous , conglomeratic (201.5'-201.7'), thin to medium bedded

212.0

Dark gray SHALE, soft, unweathered, medium to thinly bedded, moderately to slightly fractured, some calcareous zones, fossil fragments

213.7

Light gray SANDSTONE with medium to dark gray shale streaks/laminae, moderately hard

Light gray SANDSTONE, hard to very hard, unweathered, thinly to medium bedded, moderately fractured, micaceous, DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Image and Structure Log

0° 0°180°90° 270°

Aperture

360 0mm

219.3

230.2

Dark gray SHALE with light gray interbedded sandstone, thin to medium bedded

231.0

Light gray LIMESTONE, hard to very hard, fossiliferous, conglomeratic, unweathered, thinly bedded, crystalline

SANDSTONE with interbedded shale, medium bedded, unweathered, moderately hard, micaceous, slightly fractured, some calcareous intervals (increase with depth)

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Image and Structure Log

0° 0°180°90° 270°

Aperture

360 0mm

250.3

265.0

Gray to dark gray SHALE, soft, unweathered, thinly bedded

SANDSTONE with interbedded shale

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Image and Structure Log

0° 0°180°90° 270°

Aperture

360 0mm

267.3

272.8

Light gray LIMESTONE, very hard to hard, unweathered, medium to thickly bedded, slightly fractured deg.

ft ft ft ft

Bedded sand or sandstone Silt, siltstone or silty shale Sandy or silty shale Limestone

Fracture

PROJECT:

EAST BRANCH DAM - GEOTECHNICAL

DRILLING AND SITE INVESTIGATION

VERTICAL

BACK STA.X

HOLE NO: E-41

INCLINEDX

DATE HOLE:

TOTAL DEPTH OF HOLE: 287.7'

ELEV. TOP OF HOLE: 1707.0'

DIRECTION OF HOLE:

COMPLETED: 02/06/2012BEARING 300AHEAD STA.

STARTED: 11/06/2011

DEPTH DRILLED INTO ROCK: 132.7'

LOCATION:

STA:9+47.6

OFF:1.5'D/S

THICKNESS OF OVERBURDEN: 155.0'

Depth

1ft:20ft

Elev. [ft] DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Dip and Dip Direction

0 90

Aperture

90 0mm

Image and Structure Log

0° 0°180°90° 270°

155.0

Overburden

163.3

Dark gray SILT SHALE, moderately hard, completely weathered to moderately weathered;

Rock sample destroyed by Sonic Drilling.

155.0'-157.0': Completely weathered

163.5

Core Loss (0.2')

Dark gray SHALE, soft, slightly to moderately weathered, lamianted bedding, interbedded with sandstone laminae

Elev. [ft] DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Dip and Dip Direction

0 90

Aperture

90 0mm

Image and Structure Log

0° 0°180°90° 270°

180.4

182.6

Gray, LIMESTONE, hard, unweathered, thin bedded, with clasts of shells (fossils) siltstone and quartz pebbles

198.7

Dark gray SHALE, soft to moderately hard, unweathered to slightly weathered, laminated, locally interbedded with siltstone and sandstone laminae

Gray SANDSTONE, hard, unweathered, thin to medium bedding breaks, fine grained, local shale laminae, local discontinuous zones with calcareous matrix, micaceous

Elev. [ft] DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Dip and Dip Direction

0 90

Aperture

90 0mm

Image and Structure Log

0° 0°180°90° 270°

207.7 micaceous

225.0

Gray SILTSTONE, moderately hard, unweathered to slightly weathered, thin to thick bedding breaks, interbedded with sandstone and shale laminae, locally sandstone beds are calcareous, bioturbated

Dark gray SHALE, soft to moderately hard, unweathered, laminated to thin bedding breaks

Elev. [ft] DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Dip and Dip Direction

0 90

Aperture

90 0mm

Image and Structure Log

0° 0°180°90° 270°

227.5 thin bedding breaks

229.1

Gray SANDSTONE, hard, unweathered, fine grained with local siltstone laminae

239.6

Dark gray SHALE, soft to moderately hard, unweathered

247.9

Gray SANDSTONE, hard, unweathered, fine grained, interbedded with shale laminae from 239.6'-241.6' sandstone has calcareous matrix, medium to thick bedding breaks

Dark gray SHALE, soft ot medium hard, unweathered, interbedded with sandstone laminae, thick bedding breaks

Elev. [ft] DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Dip and Dip Direction

0 90

Aperture

90 0mm

Image and Structure Log

0° 0°180°90° 270°

263.1

Gray SANDSTONE, hard, unweathered, fine grained, interbedded, with shale and siltstone laminae thick bedding discontinuities

Elev. [ft] DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Dip and Dip Direction

0 90

Aperture

90 0mm

Image and Structure Log

0° 0°180°90° 270°

284.4

287.7

Dark gray SHALE, soft to moderately hard, unweathered, thick bedding discontinuities, interbedded with sandstone with calcareous matrix, local shells, bioturbated deg.

ft ft ft ft

Bedded sand or sandstone Silt, siltstone or silty shale Sandy or silty shale Limestone

Fracture

PROJECT:

EAST BRANCH DAM - GEOTECHNICAL

DRILLING AND SITE INVESTIGATION

VERTICALX

BACK STA.

HOLE NO: E-42

INCLINED

DATE HOLE:

TOTAL DEPTH OF HOLE: 288.2'

ELEV. TOP OF HOLE: 1707.0'

DIRECTION OF HOLE:

COMPLETED: 02/03/2012BEARINGAHEAD STA.

STARTED: 11/15/2011

DEPTH DRILLED INTO ROCK: 107.2'

LOCATION:

STA:9+62.8 OFF:2'D/S

THICKNESS OF OVERBURDEN: 181.0'

Depth

1ft:20ft

Elev. [ft] DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Dip and Dip Direction

0 90

Aperture

45 0mm

Image and Structure Log

0° 0°180°90° 270°

181.0

Overburden

183.0

Brownish gray SHALE, soft, friable, highly weathered

187.0

Gray SANDSTONE, hard, moderately to highly weathered

194.0

Gray SANDSTONE, hard, slightly weathered to unweathered, fine grained localized clasts of siltstone

195.1

Dark gray SILTSTONE, hard, slightly weathered, interbedded with sandstone

196.3

Gray LIMESTONE, hard, slightly weathered with clasts of shells and siltstone (Conglomeratric)

Dark gray SILTSTONE, medium hard, slightly weathered to unweathered, interbedded with thin sandstone beds

Elev. [ft] DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Dip and Dip Direction

0 90

Aperture

45 0mm

Image and Structure Log

0° 0°180°90° 270°

204.4

207.3

Gray SANDSTONE, hard, slightly weathered to unweathered, v fine grained, calcareous matrix

211.3

Dark gray SHALE, soft, moderately to slightly weathered

212.7

Gray SANDSTONE, hard, slightly weathered to unweathered, v fine grained

221.0

Dark gray SHALE, soft, unweathered, interbedded with thin beds of sandstone and siltstone

Gray SANDSTONE, hard, unweathered, fine to v fine grained, interbedded with thin siltstone and shale beds, bioturbated with local clasts of siltstone pyrite

Elev. [ft] DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Dip and Dip Direction

0 90

Aperture

45 0mm

Image and Structure Log

0° 0°180°90° 270°

232.7

233.4

Gray LIMESTONE, hard, unweathered, conglomeratic

243.2

Dark gray SHALE, soft, unweathered, interbedded with thin sandstone beds, local clasts of sandstone and siltstone pebbles, laminated to v thin beds

Gray SANDSTONE, hard, unweathered, fine grained with interbedded shale laminea and thin beds of siltstone, laminated to v thin beds

Elev. [ft] DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Dip and Dip Direction

0 90

Aperture

45 0mm

Image and Structure Log

0° 0°180°90° 270°

265.5

272.0

Dark gray SHALE, soft to moderately hard, unweathered, interbedded with fine grained sandstone with calcareous martix local beds of shells and bioturbation, laminated beds

276.3

Gray SANDSTONE, hard, unweathered, v thin to thin beds, fine grained interbedded with shale laminae

Light gray SANDSTONE, v hard, unweathered, v thin to thin bedded, interbedded

Elev. [ft] DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Dip and Dip Direction

0 90

Aperture

45 0mm

Image and Structure Log

0° 0°180°90° 270°

1419 288.2 to thin bedded, interbedded with shale laminae, fine grained deg.

ft ft ft ft

Bedded sand or sandstone Silt, siltstone or silty shale Sandy or silty shale Interbedded sandstone and shale

Fracture

PROJECT:

EAST BRANCH DAM - GEOTECHNICAL

DRILLING AND SITE INVESTIGATION

VERTICALX

BACK STA.

HOLE NO: E-43

INCLINED

DATE HOLE:

TOTAL DEPTH OF HOLE: 288.2'

ELEV. TOP OF HOLE: 1706.9'

DIRECTION OF HOLE:

COMPLETED: 01/31/2012BEARINGAHEAD STA.

STARTED: 11/18/2011

DEPTH DRILLED INTO ROCK: 73.2'

LOCATION:

STA:9+92.5

OFF:1.9'D/S

THICKNESS OF OVERBURDEN: 215.0'

Depth

1ft:20ft

DescriptionLithology Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

Elev. [ft] Dip And Dip Direction

0 90

Aperture

90 0mm

Image and Structure Log

0° 0°180°90° 270°

220.2

Light gray SHALE, very soft, broken

224.5

SANDSTONE with interbedded shale, nodular sandstone bluish-gray with dark gray shale, hard, laminated bedding, highly fractured, moderately weathered

SHALE with interbedded sandstone, black shale with light gray nodular sandstone, moderately hard, laminated bedding, moderately fractured, slightly weathered

H4TSDKME

Cross-Out

H4TSDKME

Inserted Text 10+92.5

DescriptionLithology Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

Elev. [ft] Dip And Dip Direction

0 90

Aperture

90 0mm

Image and Structure Log

0° 0°180°90° 270°

238.2

256.5

SANDSTONE with interbedded Shale, light gray fine grained sandstone with black shale laminations, hard, laminated to very thinly bedded, moderately fracture, weathered

Dark gray SILTSTONE with interbedded sandstone, moderately hard, laminated to very thinly bedded, slightly fractured, weathered

DescriptionLithology Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

Elev. [ft] Dip And Dip Direction

0 90

Aperture

90 0mm

Image and Structure Log

0° 0°180°90° 270°

261.4

262.8

Light gray SANDSTONE, very hard, very thinly bedded, weathered, calcareous

270.8

Black SHALE with interbedded sandstone, moderately hard, laminated bedding, slightly fractured, weathered

273.5

Light gray SANDSTONE, hard, unweathered, very fine grained, interbedded with dark gray shale, bioturbated with local clasts of siltstone and sandstone pebbles

Light gray SANDSTONE, hard, unweathered, very fine grained, with shale laminae, localized clasts of siltstone

DescriptionLithology Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

Elev. [ft] Dip And Dip Direction

0 90

Aperture

90 0mm

Image and Structure Log

0° 0°180°90° 270°

288 288.2 deg.

ft ft ft ft

Bedded sand or sandstone Sandy or silty shale

Fracture

PROJECT:

EAST BRANCH DAM - GEOTECHNICAL

DRILLING AND SITE INVESTIGATION

VERTICALX

BACK STA.

HOLE NO: E-44

INCLINED

DATE HOLE:

TOTAL DEPTH OF HOLE: 288.2'

ELEV. TOP OF HOLE: 1706.9'

DIRECTION OF HOLE:

COMPLETED: 01/22/2012BEARINGAHEAD STA.

STARTED: 11/15/2011

DEPTH DRILLED INTO ROCK: 67.2'

LOCATION:

STA:12+77.6

OFF:1.8'D/S

THICKNESS OF OVERBURDEN: 221.0'

Depth

1ft:20ft

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

90 0mm

Image and Structure Log

0° 0°180°90° 270°

221.0

Overburden

226.4

Light gray, SHALE, very soft, broken

228.0

Dark gray SHALE, slightly to moderately weathered, soft interbedded with siltstone laminae

228.2

0.2' Core Loss

231.5

Dark gray SHALE, slightly to moderately weathered, soft interbedded with siltstone laminae

Light gray SANDSTONE, slightly weathered to fresh, hard, v. fine to fine grained, interbedded with soft shale laminae

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

90 0mm

Image and Structure Log

0° 0°180°90° 270°

253.8

Dark gray SHALE, soft, slightly weathered to fresh, interbedded with v. fine grained sandstone

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

90 0mm

Image and Structure Log

0° 0°180°90° 270°

271.5

288.2

Light gray SANDSTONE, fresh, fine grained, v. hard, with few shale laminations, thinly bedded, moderately fractured deg.

ft ft ft ft

Bedded sand or sandstone Silt, siltstone or silty shale Sandy or silty shale Limestone

Fracture

PROJECT:

EAST BRANCH DAM - GEOTECHNICAL

DRILLING AND SITE INVESTIGATION

VERTICAL

BACK STA.

HOLE NO: E-45

INCLINEDX

DATE HOLE:

TOTAL DEPTH OF HOLE: 297.8'

ELEV. TOP OF HOLE: 1706.8'

DIRECTION OF HOLE:

COMPLETED: 01/24/2012BEARING 113AHEAD STA.X

STARTED: 11/02/2011

DEPTH DRILLED INTO ROCK: 65.8'

LOCATION:

STA:12+92.7

OFF:1.4'D/S

THICKNESS OF OVERBURDEN: 232.0'

Depth

1ft:20ft

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

90 0mm

Image and Structure Log

0° 0°180°90° 270°

232.0

Overburden

235.7

Light gray SHALE, very soft, broken

241.2

Light gray SANDSTONE with interbedded shale, hard nodular dark gray shale, moderately hard, laminated, slightly weathered, moderately fractured

245.9

SHALE with interbedded sandstone, dark gray shale with light gray lenticular bedded sandstone, moderately hard, laminated, slightly weathered, moderately fractured

Light gray SANDSTONE with interbedded Shale, hard, v. thinly bedded, moderately fractured, slightly weathered to unweathered, micaceous

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

90 0mm

Image and Structure Log

0° 0°180°90° 270°

268.5

270.5

Dark gray SILTSTONE with interbedded sandstone, hard, v thinly bedded, unweathered

271.5

Dark gray LIMESTONE, argillaceous, fossiliferous, very hard, thinly bedded, unweathered

Dark gray SILTSTONE with interbedded sandstone, hard, v thinly bedded, unweathered, few pyrite nodules

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

90 0mm

Image and Structure Log

0° 0°180°90° 270°

278.3

285.4

Black SHALE with interbedded sandstone, moderately hard, laminated, unweathered, few limestone nodules

287.8

Light gray SANDSTONE with interbedded shale, nodular sandstone, black shale laminations, hard, v thinly bedded, unweathered, fine grained

297.8

Light gray SANDSTONE, very hard, very few shale laminations, thinly bedded, unweathered, medium grained deg.

ft ft ft ft

Bedded sand or sandstone Sandy or silty shale

Fracture

PROJECT:

EAST BRANCH DAM - GEOTECHNICAL

DRILLING AND SITE INVESTIGATION

VERTICALX

BACK STA.

HOLE NO: E-46

INCLINED

DATE HOLE:

TOTAL DEPTH OF HOLE: 288.2'

ELEV. TOP OF HOLE: 1706.9'

DIRECTION OF HOLE:

COMPLETED: 01/11/2012BEARINGAHEAD STA.

STARTED: 11/05/2011

DEPTH DRILLED INTO ROCK: 75.2'

LOCATION:

STA:14+77.9

OFF:1.6'D/S

THICKNESS OF OVERBURDEN: 213.0'

Depth

1ft:20ft

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

213.0

Overburden

217.8

Gray SANDSTONE, moderately weathered, sample destroyed by Sonic Drilling

224.0

Gray SANDSTONE and dark gray SHALE, interbedded, moderately hard to hard, slightly weathered to unweathered, laminated to v. thin bedding, RD: 2°-5°, bioturbation, worm burrows

228.1

Dark gray SHALE with sandstone laminae and lenses, moderately hard, unweathered, sparse pyrite nodules, v. thin to thinly bedded, RD: 2°-5°

Gray SANDSTONE with shale and silt laminae, medium hard, slightly weathered to unweathered, laminated to thin bedded, RD: 2°-10°, 228.2'-228.4':

Bioturbation

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

234.0

234.1

0.1' Core Loss

256.2

Gray SANDSTONE with shale and silt laminae, medium hard, slightly weathered to unweathered, laminated to thin bedded, RD: 2°-10°

Dark gray SHALE with siltstone and sparse sandstone laminae, moderately hard, unweathered, laminated

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

263.7

267.2

Light gray SANDSTONE with dark gray silt and shale laminae and beds, moderately hard, slightly weathered to unweathered

Gray SANDSTONE with sparse shale laminae, micaceous, moderately hard to hard, unweathered, laminated to medium bedded, RD: 3°-8°, sparse bioturbation

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

288 288.2 deg.

ft ft ft ft

Bedded sand or sandstone Sandy or silty shale Limestone

Fracture

PROJECT:

EAST BRANCH DAM - GEOTECHNICAL

DRILLING AND SITE INVESTIGATION

VERTICAL

BACK STA.

HOLE NO: E-47

INCLINEDX

DATE HOLE:

TOTAL DEPTH OF HOLE: 307.8'

ELEV. TOP OF HOLE: 1706.8'

DIRECTION OF HOLE:

COMPLETED: 01/06/2012BEARING 119AHEAD STA.X

STARTED: 10/24/2011

DEPTH DRILLED INTO ROCK: 92.8'

LOCATION:

STA:15+2.7

OFF:1.3'D/S

THICKNESS OF OVERBURDEN: 215.0'

Depth

1ft:20ft

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

45 0mm

Image and Structure Log

0° 0°180°90° 270°

215.0

Overburden

216.5

Brown to orangish brown SHALE, very soft, highly weathered

218.5

Orangish brown to gray SHALE, very soft to soft, moderately weathered

222.7

Gray SHALE, soft to medium hard, slightly weathered to unweathered, laminated

232.8

Gray SANDSTONE with silty and shale laminae, moderately hard, slightly to unweathered, laminated to

v. thinly bedded, RD:

10°-20°, bioturbation

Dark gary SHALE with gray sandstone, interbedded, soft to moderately hard, unweathered, laminated, RD: 15°-20°

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

45 0mm

Image and Structure Log

0° 0°180°90° 270°

240.6

Gray SANDSTONE with shale and siltstone laminae and beds, unweathered, thinly to medium bedded, RD: 10°-20°

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

45 0mm

Image and Structure Log

0° 0°180°90° 270°

264.2

265.2

Light gray LIMESTONE, moderately hard to hard, unweathered, fossil shells, bioturbation, shale and silt clasts, highly reactive with HCl

269.6

Gray SANDSTONE with silt and shale laminae, soft to medium hard, slightly weathered to unweathered bioturbation

275.1

Dark gray SHALE, soft to moderately hard, unweathered, laminated, RD: 15°-20°

279.7

Gray SANDSTONE with dark gray SHALE , interbedded, soft to medium hard, unweathered, bioturbation

Gray SANDSTONE, micaceous, hard, unweathered, thin to medium bedded, RD:

15°-20°, some shale clasts and laminae

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

45 0mm

Image and Structure Log

0° 0°180°90° 270°

301.0

307.8

Dark gray SHALE, moderately hard, unweathered, v. thin to medium bedded, RD: 15°, sparse sandstone laminae deg.

ft ft ft ft

Bedded sand or sandstone Argillaceous or shaly sandstone Silt, siltstone or silty shale Sandy or silty shale Limestone

Fracture

PROJECT:

EAST BRANCH DAM - GEOTECHNICAL

DRILLING AND SITE INVESTIGATION

VERTICAL

BACK STA.

HOLE NO: E-50

INCLINEDX

DATE HOLE:

TOTAL DEPTH OF HOLE: 277.0'

ELEV. TOP OF HOLE: 1707.1'

DIRECTION OF HOLE:

COMPLETED: 12/06/2011BEARING 120AHEAD STA.X

STARTED: 10/22/2011

DEPTH DRILLED INTO ROCK: 127.5'

LOCATION:

STA:20+27.4

OFF:1.1'D/S

THICKNESS OF OVERBURDEN: 149.5'

Depth

1ft:20ft

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

149.5

Overburden

152.3

Gray SANDSTONE with very thin lenses of shale, highly weathered to moderately weathered

153.7

Gray, SANDSTONE with shale lamiantions, unweathered, hard to soft, very thin to thinly bedded, RD: 30°

166.5

Dark gray, SHALE, slightly weathered to unweathered, soft, laminated to very thinly bedded, RD: 30°, gray sandstone laminations and lenses

166.9

Gray, LIMESTONE, unweathered, moderately hard, quartz pebbles present

SANDSTONE with interbedded shale, slightly weathered to unweathered, soft to moderately hard, very thin to laminated bedding, RD: 20°-30°

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

170.9

172.6

Dark gray, SHALE, slightly weathered to unweathered, soft, laminated, RD:

20°-25°

173.6

172.6'-173.6': Loss 1.0'

190.9

Gray, SANDSTONE, unweathered, hard to very hard, thin to medium bedded, RD: 20°, very fine grained to coarse grained sand - fining upwards

191.2

Dark gray LIMESTONE, soft to moderately hard, moderately to highly weathered, shale partings

192.8

Gray, SANDSTONE, unweathered, hard to very hard, thin to medium bedded, RD: 20°, very fine grained to coarse grained sand - fining upwards

Gray, LIMESTONE, moderately hard, slightly weathered to unweathered, marine fossils

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

193.8 marine fossils

200.2

SANDSTONE and SHALE, interbedded soft to moderately hard, moderately weathered to unweathered, worm burrows, laminated bedding, RD: 20°

212.1

Gray, SANDSTONE, Shale, Siltstone partings, unweathered, soft to hard, very thin to moderately bedded, RD: 20°, some worm burrows

214.9

Dark gray, SHALE, soft to moderately hard, moderately weathered to unweathered, laminated, RD: 20°

217.1

Medium to dark gray, LIMESTONE with shale partings, hard, unweathered, highly reactive to HCl, fossil shell fragments, some shale partings

Dark gray to gray, SHALE, soft to hard, unweathered, laminated to thinly bedded, RD: 20°-30°

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

221.2

234.7

Greenish gray to dark gray SILTSTONE, interbedded, soft to moderately hard, unweathered, shale partings, laminated to thinly bedded, RD: 15°-30°

244.6

Gray to dark gray SANDSTONE with shale interbedded, bioturbated, soft to moderately hard, unweathered, burrowed, laminated to very thinly bedded, RD: 15°20°

Black, SHALE with gray sandstone laminae and very thin beds, soft to

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

249.2 very thin beds, soft to moderately hard, unweathered, laminated to very thinly bedded, RD:

15°-20°

250.1

Gray to medium gray

SANDSTONE,

conglomeratic, carbanoceous, moderately hard to hard, unweathered, rounded and angular, worm burrows

Gray SANDSTONE with interbedded black shale, laminae and very thin beds, soft to moderately hard, laminated to moderately bedded, RD:

20°-30°

DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

Elev. [ft] Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

277.0 deg.

ft ft ft ft

Bedded sand or sandstone Silt, siltstone or silty shale Sandy or silty shale Limestone Interbedded sandstone and shale

Fracture

PROJECT:

EAST BRANCH DAM - GEOTECHNICAL

DRILLING AND SITE INVESTIGATION

VERTICAL

BACK STA.

HOLE NO: E-51

INCLINEDX

DATE HOLE:

TOTAL DEPTH OF HOLE: 217.8'

ELEV. TOP OF HOLE: 1707.2'

DIRECTION OF HOLE:

COMPLETED: 12/03/2011BEARING 127AHEAD STA.X

STARTED: 10/21/2011

DEPTH DRILLED INTO ROCK: 137.8'

LOCATION:

STA:22+1.6

OFF:1.6' D/S

THICKNESS OF OVERBURDEN: 80.0'

Depth

1ft:20ft

Description Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

LithologyElev. [ft] DIp and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

Light brown SANDSTONE, moderately to highly weathered, hard

Description Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

LithologyElev. [ft] DIp and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

111.6

123.6

SHALE with interbedded Sandstone and Sandstone nodules, black shale with light gray sandstone, moderately hard, slightly weathered

Light gray SANDSTONE with interbedded shale, hard, unweathered, calcareous, localized marine fossils and conglomeratic

Description Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

LithologyElev. [ft] DIp and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

138.9

146.6

Gray to dark gray SHALE with sandstone streaks;

(sandstone is typically 1/16" to 3/4" thick), slightly weathered, moderately hard, thinly to medium bedded

Gray to light SANDSTONE with shale streaks, dark gray shale, calcareous fossil fragments in sandstone, moderately hard to hard, shale is moderately hard, unweathered, thin to medium bedded

Description Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

LithologyElev. [ft] DIp and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

156.9

158.0

Gray LIMESTONE, very finely crystalline, fossil fragments, slightly weathered, moderately hard

160.3

Light gray SANDSTONE, unweathered, hard, slightly calcareous

164.5

Gray SILTSTONE, moderately hard, unweathered, thinly to medium bedded

170.0

Light gray SANDSTONE, with shaley interbeds, shale is dark gray, slightly weathered, sandstone hard, shale moderately hard

174.5

Gray to light gray SHALE with sandstone laminations, sandstone is hard, shale moderately hard, unweathered except for a few iron stained fractures, mostly thinly bedded

SANDSTONE with shale laminations, sandstone is slightly calcareous, hard, (shale moderately hard), very thin to thinly bedded, few fractures iron stained, otherwise rockmass

Description Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

LithologyElev. [ft] DIp and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

192.9 otherwise rockmass unweathered

196.0

Gray to dark gray SHALE, moderately hard, some sandy laminations, unweathered, thinly bedded, staining confined to fracture surfaces

199.0

SANDSTONE with shaley laminations; gray (sandstone) to dark gray (shale), hard to moderately hard, calcareous, fossil fragments, unweathered very thin to thinly bedded

Gray SILTSTONE with sandstone laminations, unweathered, moderately hard, medium bedded

Description Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

LithologyElev. [ft] DIp and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

211.0

217.8

Light gray SANDSTONE with shaley laminations (laminations typically wavy), shale is dark gray, unweathered, hard, medium bedded, sandstone localized calcareous zones deg.

ft ft ft ft

Bedded sand or sandstone Silt, siltstone or silty shale Sandy or silty shale Limestone Interbedded sandstone and shale

Fracture

BACK STA.

VERTICALX

PROJECT:

EAST BRANCH DAM - GEOTECHNICAL

DRILLING AND SITE INVESTIGATION

INCLINED

HOLE NO: E-52

DATE HOLE:

TOTAL DEPTH OF HOLE: 193.4'

ELEV. TOP OF HOLE: 1707.1'

BEARING COMPLETED: 11/16/2011

DIRECTION OF HOLE:

AHEAD STA.

STARTED: 10/19/2011

DEPTH DRILLED INTO ROCK: 134.9'

LOCATION:

STA:22+87.6

OFF:1.4'D/S

THICKNESS OF OVERBURDEN: 56.5'

Depth

1ft:20ft

DescriptionLithology Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

Elev. [ft] DIp and Dip Direction

0 90

Aperture

630 0mm

Image and Structure Log

0° 0°180°90° 270°

63.0

Buff to light brown SANDSTONE, very fine grained, weathered to moderately weathered to 60.0', slightly weathered from 60.0'-63.0'

66.0

Brown SILTSTONE, micaceous, soft, moderately weathered, highly fractured to moderately fractured; Joint roughness: slightly rough to smooth, RD: 0°-25°;

Bedding: very thin to thin

69.0

Dark reddish brown SANDSTONE, heavily iron stained, highly weathered, pitted, discoloration throughout, soft, moderately to highly fractured; Joint roughness:

rough to slightly rough, RD:

0°-20°, non-planar

73.7

Brown SILTSTONE, micaceous, soft, moderately weathered, highly fractured to moderately fractured, Joint roughness: slightly rough to smooth, RD=0°-20°;

Bedding: very thin to thin

Greenish gray to gray SANDSTONE, micaceous, slightly weathered to unweathered, modeately hard, broken to slightly fractured; Joint roughness:

rough to slightly rough;

Bedding: Laminated to moderately RD: 0°-10°

DescriptionLithology Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

Elev. [ft] DIp and Dip Direction

0 90

Aperture

630 0mm

Image and Structure Log

0° 0°180°90° 270°

83.5

87.7

Brown SANDSTONE, micaceous, moderately to unweathered, moderately hard, broken to slightly fractured; Joint roughness:

slightly rough to rough, some fractures are clay filled and iron stained;

Bedding: Laminated to medium, RD: 0°-10°

88.3

Loss 0.6'

92.5

Brown SANDSTONE, micaceous, moderately to unweathered, moderately hard, broken to slightly fractured; Joint roughness:

slightly rough to rough, some fractures are clay filled and iron stained;

Bedding: Laminated to medium, RD: 0°-10°

Brown to gray SANDSTONE, moderately to slightly weathered, soft to moderately hard, broken to slightly fractured; Joint roughness: smooth to very rough, Bedding: Thin to medium RD: 0°-10°

DescriptionLithology Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

Elev. [ft] DIp and Dip Direction

0 90

Aperture

630 0mm

Image and Structure Log

0° 0°180°90° 270°

108.9

110.3

Loss 1.4'

116.8

Dark gray SHALE, medium hard to hard, slightly weathered to unweathered, broken to moderately fractured; Joint roughness:

rough to smooth; Bedding:

Laminated RD: 0°-10°

120.9

Gray LIMESTONE, medium hard, slightly weathered to unweathered, broken to moderately fractured; Joint roughness:

rough to very rough, marine fossils, bioturbation, soft sediment deformation

Gray SANDSTONE, moderately hard to hard, slightly to unweathered, broken to slightly fractured;

Joint roughness: slightly to rough, calcareous cemented, silty stringers present

DescriptionLithology Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

Elev. [ft] DIp and Dip Direction

0 90

Aperture

630 0mm

Image and Structure Log

0° 0°180°90° 270°

131.2

139.0

Dark gray SHALE, soft, slightly weathered to unweathered, highly to moderately fractured, laminated to very thin;

Bedding: RD: 0°-5°; Joint roughness: smooth to rough, sandy stringers and clasts

143.0

Gray SANDSTONE, moderately hard, unweathered, moderately to slightly fractured; Joint roughness: rough to slightly rough, RD: 5°-10°, silty stringers throughout, bioturbated, same fossil clasts

144.0

Dark gray SHALE, soft, moderately fractured, laminate bedding, sandstone stringers

147.1

Gray SANDSTONE, moderately hard, moderately to slightly fractured; Joint roughness:

rough to very rough, dark gray silty stringers

148.7

Dark gray SHALE, soft to moderately hard, unfractured, laminated to very thin bedding, interbedded siltstone and sandstone laminae

151.7

SANDSTONE, moderately hard, broken to slightly fractured; Joint roughess:

slightly rough to rough, crossbedding, interbedded siltstone

Gray to moderately gray

DescriptionLithology Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

Elev. [ft] DIp and Dip Direction

0 90

Aperture

630 0mm

Image and Structure Log

0° 0°180°90° 270°

159.3

Gray to moderately gray SILTSTONE and

SANDSTONE,

interbedded, moderately hard, unweathered, broken to moderately fractured

162.5

Dark gray SHALE, soft to moderately hard, unweathered, laminated to thinly bedded, interbedded with siltstone and sandstone

164.6

Dark gray to gray SANDSTONE and SHALE, interbedded, laminated to thinly bedded, bioturbation, silty stringers and thin beds

166.3

Gray SANDSTONE, moderately hard, moderately fractured; Joint roughness: slightly rough to rough

169.3

Gray to dark gray SANDSTONE and SHALE, interbedded, soft to moderately hard; Joint roughness: slightly rough to rough, Bioturbation:

siltstone and sandstone burrow filled clasts

Gray to dark gray SANDSTONE and SILTSTONE, interbedded, moderately hard, broken to slightly fractured; Joint roughness: smooth to rough, RD: 5°-10°

DescriptionLithology Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

Elev. [ft] DIp and Dip Direction

0 90

Aperture

630 0mm

Image and Structure Log

0° 0°180°90° 270°

182.1

193.4

Dark gray to black SHALE, soft, unweathered laminated bedding, very thin sandstone beds deg.

ft ft ft ft

Bedded sand or sandstone Silt, siltstone or silty shale Sandy or silty shale Limestone Interbedded sandstone and shale

Fracture

PROJECT:

EAST BRANCH DAM - GEOTECHNICAL

DRILLING AND SITE INVESTIGATION

VERTICALX

BACK STA.

HOLE NO: E-53

INCLINED

DATE HOLE:

TOTAL DEPTH OF HOLE: 184.6'

ELEV. TOP OF HOLE: 1703.3

DIRECTION OF HOLE:

COMPLETED: 12/16/2011BEARINGAHEAD STA.

STARTED: 10/18/2011

DEPTH DRILLED INTO ROCK: 144.6'

LOCATION:

STA:23+46.3,

OFF:109.0U/S

THICKNESS OF OVERBURDEN: 40.0'

Depth

1ft:20ft

Elev. [ft] DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

DIp and DIp Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

44.0

Gray SILTSTONE, slightly to moderately weathered, medium

Gray SANDSTONE, moderately weathered to unweathered, hard to soft, very fine grained, interbedded with thin shale and siltstone beds

Elev. [ft] DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

DIp and DIp Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

65.5

Light gray to light tan SANDSTONE, slightly weathered to fresh, hard, very thin cross-bedding, fine grained, micaceous

Elev. [ft] DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

DIp and DIp Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

101.7

Dark gray SHALE, slightly weathered to fresh, soft, interbedded with Siltstone laminae

Elev. [ft] DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

DIp and DIp Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

113.7

130.3

Gray SANDSTONE, slightly weathered to fresh, hard, conglomeratic from 113.7' to 114.3' and 114.9' to 115.9'. Thin shale laminae throughout.

Dark gray SHALE, slightly weathered to fresh, soft, interbedded with fine grained sandstone, gray hard, fresh

Elev. [ft] DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

DIp and DIp Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

139.7

157.1

Gray SANDSTONE, slightly weathered to fresh, shale laminae

Dark gray SHALE, fresh, soft, interbedded with fine grained sandstone

Elev. [ft] DescriptionLithology Pressure Test

1 10000Lu

Recovery

0 100%

RQD

0 100%

DIp and DIp Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

166.2

177.2

Gray SANDSTONE, fresh, hard, interbedded with shale laminae and beds.

Locally bioturbated, localized clasts of pyrite

178.5

Gray LIMESTONE, fresh, hard, shell clasts, shale laminae

180.6

Dark gray SHALE, fresh, soft

184.6

Gray LIMESTONE, fresh, hard, interbedded with shale, bioturbated, shell clasts deg.

ft ft ft ft

Bedded sand or sandstone Silt, siltstone or silty shale Sandy or silty shale Limestone Interbedded sandstone and shale

Fracture

PROJECT:

EAST BRANCH DAM - GEOTECHNICAL

DRILLING AND SITE INVESTIGATION

VERTICAL

BACK STA.

HOLE NO: E-54

INCLINEDX

DATE HOLE:

TOTAL DEPTH OF HOLE: 157.6'

ELEV. TOP OF HOLE: 1673.9'

DIRECTION OF HOLE:

COMPLETED: 12/17/2011BEARING 48AHEAD STA.X

STARTED: 11/15/2011

DEPTH DRILLED INTO ROCK: 151.6'

LOCATION:

STA:23+79.4

OFF:263.5U/S

THICKNESS OF OVERBURDEN: 6.0'

Depth

1ft:20ft

Elev. [ft] DescriptionLithology Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

8.0

Gray to dark gray SHALE, slightly weathered, some iron staining throughout, soft to very soft

16.8

Dark gray SHALE, soft to moderately hard, slightly weathered to unweathered, laminated bedding RD:

15°-25°, iron staining and clay seams common along bedding planes and fractures

Gray SANDSTONE with silty streaks and shale, moderately hard, moderately weathered to unweathered, very thin to thinly bedded, RD: 15°-20°, iron stained fractures common

Elev. [ft] DescriptionLithology Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

32.3

41.3

Greenish gray SANDSTONE, silty, fine grained, moderately hard, slightly weathered to unweathered, thin to medium bedding, RD:

15-20

Brownish gray to gray SANDSTONE moderately hard, slightly weathered, very thin to medium bedded, RD: 10°-20°

Elev. [ft] DescriptionLithology Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

71.9

72.9

Gray LIMESTONE, hard, unweathered, fossil shells and burrows/bioturbation

Gray SANDSTONE with shale, moderately hard, slightly weathered to unweathered, laminated to medium bedding, some soft sediment deformation

Elev. [ft] DescriptionLithology Recovery

0 100%

RQD

0 100%

Pressure Test

1 10000Lu

Dip and Dip Direction

0 90

Aperture

180 0mm

Image and Structure Log

0° 0°180°90° 270°

79.0

81.1

Dark gray SHALE with interbedded sandstone laminae and nodules, soft to moderately…