Certified_Final_Tech_Specs_Volume_2G_-_GBR_Appendix_G.pdf

W911WN-13-R-0002

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

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

Appendix G

Pressure Test and Slurry Test Data

2009 and 2011 Pressure Testing Summary: Water pressure testing was performed in rock zones approximately 10 to 15-foot long intervals. The testing was conducted by the Houlsby approach to Lugeon test method. The Lugeon unit is a measure of permeability common in grouting. By definition:

• 1 lugeon unit = 1 liter of water taken per meter of test length, per minute, at 10 bars pressure (142 psi more exactly and 150 psi approximately) [or]

• 1 lugeon unit = 0. 0107620 cubic feet of water taken per foot of test length per minute at 142 psi (150 psi is commonly used as the reference pressure)

In terms of velocity-based permeability units (L/t), 1 lugeon unit is roughly 1.3E-05 cm/s.

As a qualitative indication of the significance of the Lugeon value (per Houlsby):

• 1 lugeon unit is the type of permeability where grouting is hardly necessary.

• 10 lugeons warrants grouting for most seepage reduction jobs.

• 100 lugeons is the type of permeability observed in heavily jointed sites with relatively open joints or in sparsely cracked foundations where joints are very wide open.

Water pressure testing was performed by up-staging at the completion of drilling all rock in the boring and using a double packer to isolate the stages. Testing of each interval was conducted at five test pressures (A-B-C-B-A), where C = maximum pressure, A = 1/3[C] and B = 2/3[C].

Each test pressure was applied for 10 minutes. In 2009, the maximum test pressure was approximately 2 to 3 psi per foot of rock above the test interval, but no greater than about 200 psi (concerns have been raised over these high pressures). In 2011, a maximum pressure for each test was based on the depth of the test zone. The maximum pressure will be less than or equal to one pound per square inch (psi) per foot above the piezometric surface and less than or equal to

0.57 psi per foot below the piezometric surface. Total water loss and pressure were recorded for each test. Select zones were retested in 5 foot intervals. Special precautions for pressure testing within grouted zones and near the outlet tunnel were followed in performing pressure testing in these sensitive areas.

Pressure testing was performed on borings 08-EBD-71 through 08-EBD-74 and E-27 through E- 31.

2012 Pressure Testing Summary: During the exploration, each hole was tested using down-stage wireline test. The holes were tested in 10 ft stages using a single packer at the top of the run to seal off the tested zone. A computer connected to the electronic flowmeter and pressure transducer monitor the gauge pressure, calculated effective pressure, flowrate, and calculated Lugeon value. Water was injected until the flow and pressure stabilized. After all the pressure testing on a hole was completed, some zones were re-tested in 5 ft stages using a double packer.

This was usually done in zones where high Lugeons were recorded in an attempt to isolate the high permeable area. Borings E-39 through E-47, E-50 through E-52, E-58 and E-59 are located along the axis of the dam. Borings E-53 through E-56 are located on the spillway section dogleg.

Lugeon Evaluation: A review of the pressure tests provided in the 2012 Geotechnical Data Report was performed. Down the hole borehole images were compared with the recorded Lugeon values for each hole (E-39 to E-59) to determine if the Lugeon values appear to be accurate or possibly the result of a leaky packer. Only pressure tested zones with Lugeons greater than 100 or deemed suspect were reviewed as it is more likely to get a false high rather than a false low value. Calculated Lugeon values were evaluated to be 'unlikely', 'questionable', or 'probable'. 'Probable' Lugeons had images with multiple/large open fractures or broken zones. 'Questionable' Lugeons usually had a few fractures that could cause a high Lugeon value but maybe not as high as was reported. 'Unlikely' Lugeons were those that had no apparent flow path and were likely a result of a leaky packer.

2012 Slurry Testing: After holes were pressure tested, slurry testing was conducted on borings E- 39 through E-47 and E-50 through E-59. Target slurry properties were maintained on all slurry batches as follows:

Marsh funnel 40-43 sec.

pH 9.5-11 Density 64.5-70 pcf Filter loss 15-20 cc Slurry was pumped into the holes at a maximum pumping rate of approximately 32 gpm in order to maintain a slurry level at the top of the hole. However, slurry was not always able to reach the top of the hole, therefore, three slightly different methods were used for slurry testing. The methods included 1) inflate the packer at the bottom of the pvc and pump slurry at the maximum gauge pressure (not to exceed the maximum effective pressure of the test stage equal to the theoretical static pressure of a column of slurry from the top of the hole), record measurements at steady flow and pressure, 2) tremie bentonite slurry to the top of the hole and record measurements at steady flow, 3) lower packer to the bottom of the hole to pump the slurry, measure the slurry level, and record measurements at steady flow and pressure. All three methods were constant head tests which reached a steady-state flow and pressure relationship.

Apparent Lugeon value calculated from the slurry testing used the following equation:

1800.6(Flow rate in GPM)(40)

(Length of stage in feet)(effective pressure in psi)(28)

1997 Permeability Testing

2009-2011 Permeability Testing

Client Project Name Tested By RKS Date 10/28/2008 Project No. Calculated By FO Date 12/1/2010 Boring No. Checked By FO Date 12/1/2010 Boring Dia. 3.78125 inches

Ground Surface Elevation, G.S.

Depth to Groundwater, GWT Distance from G.S. to Swivel

Required Actual Required (1) Actual (2) Test(3)

Increment Value

Group(4) Rep. Value(4)

From 81.3 10:32 10 10 a= 65 50 36.7 8.0 To 97.6 10:45 10 10 b= 115 80 121.9 16.5 Length 16.3 11:05 10 10 c= 160 90 120.4 14.5

11:19 10 10 b= 115 35 60.8 18.8 11:32 10 10 a= 65 25 42.6 18.5

From 66.3 1:36 10 10 a= 60 50 2.3 0.5 To 82.6 1:47 10 10 b= 105 100 11.8 1.3 Length 16.3 1:58 10 10 c= 150 145 58.6 4.4

2:09 10 10 b= 105 90 23.3 2.8 2:20 10 10 a= 60 45 10.1 2.4

From 51.3 2:40 10 10 a= 50 50 49.5 10.7 To 67.6 2:52 10 10 b= 85 85 153.7 19.6 Length 16.3 10 0 c= 120 0 #DIV/0!

3:04 10 10 b= 85 60 161.4 29.1 3:15 10 10 a= 50 35 106.8 33.1

From 30.0 7:45 10 10 a= 30 0 152.0 #DIV/0!

To 46.3 10 b= 55 Packer Length 16.3 10 c= 75 Failed

10 b= 55 10 a= 30

From 16.0 8:27 10 10 a= 20 0 135.7 #DIV/0!

To 32.8 10 b= 35 Packer Length 16.8 10 c= 50 Failed

10 b= 35 10 a= 20

NOTES:

(1) Required incremental gauge pressure in psi for the five test increments:

200 psi

(Note: 1 foot of water = 0.434 psi) Pi = pressure index set by Engineer = 2 psi per foot of rock above midpoint of test interval, UNO

(2) Actual gauge pressure, p in psi:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet)

(3) Lugeon Value = flow volume (gal) x 142 psi

0.0804 x Test interval (ft) x test duration (min) x test pressure (psi) For P0 (Reference Pressure) = 142 psi

A lower max pressure [c = 1.25 psi/ft rock < or = 150 psi] is required in Boring 08-EBD-72.

b = 0.7 x "c" a = 0.4 x "c" c = max test pressure < or = limit set by Engineer c = max test pressure = [ thickness of rock overburden above midpoint of test interval in feet x Pi ] < or =

Norm Hormel Bean 21

Neptune 49661897

Driller1706.20' 160.25'

1.5'

Time Test Begun

(hr:min)

Depth Interval (feet)

East Branch Dam 061568-16

08-EBD-71

Pennsylvania Drilling CompanyContractor

Type & No. of Pump Type & No. of Water Meter

15.2

Group C 1.8

Test Duration (min) Gauge Pressure (psi) Volume of Test Flow

(gal)

Lugeon

USACE Pgh District

FIELD PERMEABILITY TESTS IN BOREHOLES

PACKER TESTS - HOULSBY METHOD

Group D 33.1

Group A

Revised on 1 December 2010

Project No. Calculated By FO Date 12/1/2010 Boring No. Checked By FO Date 12/1/2010 Boring Dia. 3.78125 inches

Ground Surface Elevation, G.S.

Depth to Groundwater, GWT Distance from G.S. to Swivel

Required Actual Required (1) Actual (2) Test(3)

Increment Value

Group(4) Rep. Value(4)

From 156.3 10:52 10 10 a= 80 70 183.2 28.4 To 172.6 11:05 10 4 b= 140 85 84.0 26.8 Length 16.3 10 c= 200 Unable to

10 b= 140 Develop 10 a= 80 Pressure

From 141.3 11:18 10 10 a= 80 85 81.2 10.4 To 157.6 11:29 10 10 b= 140 140 104.0 8.0 Length 16.3 11:41 10 6 c= 200 190 125.4 11.9

11:48 10 4 b= 140 130 81.0 16.9 11:55 10 10 a= 80 60 132.5 23.9

From 126.3 12:44 10 10 a= 80 85 70.1 8.9 To 142.6 12:55 10 10 b= 140 130 153.2 12.8 Length 16.3 1:06 10 2 c= 200 145 45.0 16.8

1:13 10 10 b= 140 85 113.7 14.5 1:25 10 4 a= 80 40 28.2 19.1

From 111.3 2:47 10 6 a= 80 0 121.5 #DIV/0!

To 127.6 10 b= 140 Packer Length 16.3 10 c= 200 Failed

10 b= 140 10 a= 80

From 94.3 10:20 10 10 a= 80 0 172.7 #DIV/0!

To 110.6 10 b= 140 Packer Length 16.3 10 c= 200 Failed

10 b= 140 10 a= 80

NOTES:

(1) Required incremental gauge pressure in psi for the five test increments:

200 psi

(Note: 1 foot of water = 0.434 psi) Pi = pressure index set by Engineer = 2 psi per foot of rock above midpoint of test interval, UNO

(2) Actual gauge pressure, p in psi:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet)

(3) Lugeon Value = flow volume (gal) x 142 psi

0.0804 x Test interval (ft) x test duration (min) x test pressure (psi) For P0 (Reference Pressure) = 142 psi

(4) From Table 1 (Back of Form) b = 0.7 x "c" a = 0.4 x "c" c = max test pressure < or = limit set by Engineer varies

Time Test Begun

(hr:min)

Depth Interval (feet)

A lower max pressure [c = 1.25 psi/ft rock < or = 150 psi] is required in Boring 08-EBD-72.

Group D 23.9

East Branch Dam 061568-16

08-EBD-71

c = max test pressure = [ thickness of rock overburden above midpoint of test interval in feet x P i ] < or =

Norm Hormel Bean 21

Neptune 49661897

Driller1706.20' 160.25'

Pennsylvania Drilling CompanyContractor

Type & No. of Pump Type & No. of Water Meter

Test Duration (min) Gauge Pressure (psi) Volume of Test Flow

(gal)

Lugeon

USACE Pgh District

FIELD PERMEABILITY TESTS IN BOREHOLES

PACKER TESTS - HOULSBY METHOD

Group D 19.1

Project No. Calculated By FO Date 12/1/2010 Boring No. Checked By FO Date 12/1/2010 Boring Dia. 3.78125 inches

Ground Surface Elevation, G.S.

Depth to Groundwater, GWT Distance from G.S. to Swivel

Required Actual Required (1) Actual (2) Test(3)

Increment Value

Group(4) Rep. Value(4)

From 216.8 3:42 10 10 a= 80 78 11.0 1.5 To 233.1 3:58 10 10 b= 140 128 48.8 4.1 Length 16.3 4:11 10 10 c= 200 183 151.6 9.0

4:24 10 10 b= 140 135 94.9 7.6 4:36 10 10 a= 80 85 48.8 6.2

From 201.4 5:03 10 10 a= 80 0 214.0 #DIV/0!

To 217.7 10 b= 140 Unable to Length 16.3 10 c= 200 Develop

10 b= 140 Pressure 10 a= 80

From 199.1 8:33 10 4 a= 80 0 81.3 #DIV/0!

To 215.4 10 b= 140 Unable to Length 16.3 10 c= 200 Develop

10 b= 140 Pressure 10 a= 80

From 186.3 8:50 10 10 a= 80 0 207.0 #DIV/0!

To 202.6 10 b= 140 Unable to Length 16.3 10 c= 200 Develop

10 b= 140 Pressure 10 a= 80

From 171.3 9:10 10 10 a= 80 0 186.0 #DIV/0!

To 187.6 10 b= 140 Unable to Length 16.3 10 c= 200 Develop

10 b= 140 Pressure 10 a= 80

NOTES:

(1) Required incremental gauge pressure in psi for the five test increments:

200 psi

(Note: 1 foot of water = 0.434 psi) Pi = pressure index set by Engineer = 2 psi per foot of rock above midpoint of test interval, UNO

(2) Actual gauge pressure, p in psi:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet)

(3) Lugeon Value = flow volume (gal) x 142 psi

0.0804 x Test interval (ft) x test duration (min) x test pressure (psi) For P0 (Reference Pressure) = 142 psi

(4) From Table 1 (Back of Form)

USACE Pgh District

FIELD PERMEABILITY TESTS IN BOREHOLES

PACKER TESTS - HOULSBY METHOD

Group C

Test Duration (min) Gauge Pressure (psi) Volume of Test Flow

(gal)

Lugeon

Type & No. of Pump Type & No. of Water Meter

4.9

East Branch Dam 061568-16

08-EBD-71

Pennsylvania Drilling CompanyContractor c = max test pressure = [ thickness of rock overburden above midpoint of test interval in feet x Pi ] < or =

Norm Hormel Bean 21

Neptune 49661897

Driller1706.20' 160.25' varies

Time Test Begun

(hr:min)

Depth Interval (feet)

A lower max pressure [c = 1.25 psi/ft rock < or = 150 psi] is required in Boring 08-EBD-72.

b = 0.7 x "c" a = 0.4 x "c" c = max test pressure < or = limit set by Engineer

Project Name Tested By DLW Date 11/12/2008 Project No. Calculated By FO Date 12/1/2010 Boring No. Checked By FO Date 12/1/2010 Boring Dia. 3.78125 inches

Ground Surface Elevation, G.S.

Depth to Groundwater, GWT Distance from G.S. to Swivel

Required Actual Required (1) Actual (2) Test(3)

Increment Value

Group(4) Rep. Value(4)

From 26.1 8:50 10 10.0 a= 20 20 0.9 0.5 To 42.4 9:01 10 10.0 b= 30 30 2.9 1.0 Length 16.3 9:12 10 10.0 c= 45 45 6.1 1.5

9:22 10 10.0 b= 30 30 4.6 1.7 9:33 10 10.0 a= 20 20 2.4 1.3

From 11.7 9:53 10 10.0 a= 10 10 0.9 1.0 To 28.0 10:04 10 10.0 b= 15 15 5.2 3.8 Length 16.3 10:15 10 10.0 c= 25 25 12.0 5.2

10:27 10 10.0 b= 15 15 7.2 5.2 10:38 10 10.0 a= 10 10 5.4 5.9

From 10 a= 40 To 10 b= 70 Length 0 10 c= 100

10 b= 70 10 a= 40

From 10 a= 30 To 10 b= 60 Length 0 10 c= 80

10 b= 60 10 a= 30

From 10 a= 25 To 10 b= 40 Length 0 10 c= 60

10 b= 40 10 a= 25

NOTES:

(1) Required incremental gauge pressure in psi for the five test increments:

200 psi

(Note: 1 foot of water = 0.434 psi) Pi = pressure index set by Engineer = 2 psi per foot of rock above midpoint of test interval, UNO

(2) Actual gauge pressure, p in psi:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet)

(3) Lugeon Value = flow volume (gal) x 142 psi

0.0804 x Test interval (ft) x test duration (min) x test pressure (psi) For P0 (Reference Pressure) = 142 psi b = 0.7 x "c" a = 0.4 x "c" c = max test pressure < or = limit set by Engineer varies

Time Test Begun

(hr:min)

Depth Interval (feet)

A lower max pressure [c = 1.25 psi/ft rock < or = 150 psi] is required in Boring 08-EBD-72.

1.1

Group D 5.9

East Branch Dam 061568-16

08-EBD-72

c = max test pressure = [ thickness of rock overburden above midpoint of test interval in feet x Pi ] < or =

Norm Hormel Bean 21

Neptune 49661897

Driller1706.82' 162.52'

Pennsylvania Drilling CompanyContractor

Type & No. of Pump Type & No. of Water Meter

Test Duration (min) Gauge Pressure (psi) Volume of Test Flow

(gal)

Lugeon

USACE Pgh District

FIELD PERMEABILITY TESTS IN BOREHOLES

PACKER TESTS - HOULSBY METHOD

Group C

Project Name Tested By DLW Date 11/11/2008 Project No. Calculated By FO Date 12/1/2010 Boring No. Checked By FO Date 12/1/2010 Boring Dia. 3.78125 inches

Ground Surface Elevation, G.S.

Depth to Groundwater, GWT Distance from G.S. to Swivel

Required Actual Required (1) Actual (2) Test(3)

Increment Value

Group(4) Rep. Value(4)

From 112.7 12:16 10 10 a= 60 60 0.6 0.1 To 129.0 12:27 10 10 b= 105 105 6.7 0.7 Length 16.3 12:38 10 10 c= 150 150 96.0 6.9

12:50 10 10 b= 105 105 31.5 3.3 1:01 10 10 a= 60 60 10.2 1.8

From 91.4 1:25 10 10 a= 50 50 147.4 31.9 To 107.7 1:37 10 10 b= 90 80 187.8 25.4 Length 16.3 1:49 10 10 c= 125 50 148.7 32.2

10 b= 90 Unable to 10 a=50 Develop

Pressure

From 72.4 2:15 10 10 a= 40 40 0.1 0.0 To 88.7 2:26 10 10 b= 70 70 3.5 0.5 Length 16.3 2:37 10 10 c= 100 100 5.5 0.6

2:54 10 10 b= 70 70 3.9 0.6 3:05 10 10 a= 40 45 2.5 0.6

From 57.4 3:25 10 10 a= 30 30 17.1 6.2 To 73.7 3:36 10 10 b= 60 60 79.3 14.3 Length 16.3 3:48 10 10 c= 80 70 134.2 20.8

4:04 10 10 b= 60 60 141.1 25.5 4:14 10 10 a= 30 30 111.3 40.2

From 41.1 4:32 10 10 a= 25 25 1.6 0.7 To 57.4 4:43 10 10 b= 40 40 12.7 3.4 Length 16.3 4:54 10 10 c= 60 65 22.8 3.8

7:53 10 10 b= 40 45 18.4 4.4 8:14 10 10 a= 25 25 0.1 0.0

NOTES:

(1) Required incremental gauge pressure in psi for the five test increments:

200 psi

(Note: 1 foot of water = 0.434 psi) Pi = pressure index set by Engineer = 2 psi per foot of rock above midpoint of test interval, UNO

(2) Actual gauge pressure, p in psi:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet)

(3) Lugeon Value = flow volume (gal) x 142 psi

0.0804 x Test interval (ft) x test duration (min) x test pressure (psi) For P0 (Reference Pressure) = 142 psi

(4) From Table 1 (Back of Form)

2.0

Group D 40.2

Norm Hormel

0.5

Group C

Lugeon

USACE Pgh District

162.52' Type & No. of Pump Type & No. of Water Meter

Bean 21 Neptune 49661897

Driller

East Branch Dam 061568-16

08-EBD-72

FIELD PERMEABILITY TESTS IN BOREHOLES

PACKER TESTS - HOULSBY METHOD

Pennsylvania Drilling CompanyContractor 1706.82'

Time Test Begun

(hr:min) varies

Depth Interval (feet)

A lower max pressure [c = 1.25 psi/ft rock < or = 150 psi] is required in Boring 08-EBD-72.

1.5

Test Duration (min) Gauge Pressure (psi) Volume of Test Flow

(gal)

Group C

Group A c = max test pressure = [ thickness of rock overburden above midpoint of test interval in feet x Pi ] < or =

Project Name Tested By RKS Date 11/10/2008 Project No. Calculated By FO Date 12/1/2010 Boring No. Checked By FO Date 12/1/2010 Boring Dia. 3.78125 inches

Ground Surface Elevation, G.S.

Depth to Groundwater, GWT Distance from G.S. to Swivel

Required Actual Required (1) Actual (2) Test(3)

Increment Value

Group(4) Rep. Value(4)

From 180.2 4:30 10 6 a= 60 0 102.5 #DIV/0!

To 196.5 10 b= 105 Unable to Length 16.3 10 c= 150 Develop

10 b= 105 Pressure 10 a= 60

From 170.2 4:56 10 10 a= 60 60 41.3 7.5 To 186.5 5:06 10 10 b= 105 100 102.1 11.1 Length 16.3 8:04 10 10 c= 150 120 171.2 15.5

8:15 10 10 b= 105 105 162.1 16.7 8:27 10 10 a= 60 70 127.2 19.7

From 154.5 8:47 10 10 a= 60 60 97.50 17.6 To 170.8 8:58 10 10 b= 105 100 160.20 17.4 Length 16.3 9:09 10 10 c= 150 120 201.50 18.2

9:50 10 10 b= 105 95 171.10 19.5 10:02 10 10 a= 60 60 115.60 20.9

From 142.7 10:38 10 10 a= 60 50 153.30 32.8 To 159.2 10:49 10 10 b= 105 85 206.90 26.1 Length 16.5 11:00 10 10 c= 150 50 153.50 32.9

10 b= 105 Unable to 10 a= 60 Develop

Pressure

From 125.5 11:12 10 10 a= 60 50 0.00 0.0 To 141.8 11:22 10 10 b= 105 100 85.20 9.2 Length 16.3 11:33 10 10 c= 150 130 185.40 15.5

11:44 10 10 b= 105 85 156.30 19.9 11:56 10 10 a= 60 55 92.80 18.3

NOTES:

(1) Required incremental gauge pressure in psi for the five test increments:

200 psi

(Note: 1 foot of water = 0.434 psi) Pi = pressure index set by Engineer = 2 psi per foot of rock above midpoint of test interval, UNO

(2) Actual gauge pressure, p in psi:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet)

(3) Lugeon Value = flow volume (gal) x 142 psi

0.0804 x Test interval (ft) x test duration (min) x test pressure (psi) For P0 (Reference Pressure) = 142 psi

(4) From Table 1 (Back of Form)

USACE Pgh District

Group C 10.7

FIELD PERMEABILITY TESTS IN BOREHOLES

PACKER TESTS - HOULSBY METHOD

Group B 18.2

Group B 26.1

Test Duration (min) Gauge Pressure (psi) Volume of Test Flow

(gal)

Lugeon

Type & No. of Pump Type & No. of Water Meter

Group D 19.7

East Branch Dam 061568-16

08-EBD-72

Pennsylvania Drilling CompanyContractor c = max test pressure = [ thickness of rock overburden above midpoint of test interval in feet x Pi ] < or =

Norm Hormel Bean 21

Neptune 49661897

Driller1706.82' 162.52' varies

Time Test Begun

(hr:min)

Depth Interval (feet)

A lower max pressure [c = 1.25 psi/ft rock < or = 150 psi] is required in Boring 08-EBD-72.

Project Name Tested By DLW Date 11/5/2008 Project No. Calculated By FO Date 12/1/2010 Boring No. Checked By FO Date 12/1/2010 Boring Dia. 3.78125 inches

Ground Surface Elevation, G.S.

Depth to Groundwater, GWT Distance from G.S. to Swivel

Required Actual Required (1) Actual (2) Test(3)

Increment Value

Group(4) Rep. Value(4)

From 9.9 4:38 10 10 a= 15 10 185.4 197.3 To 26.5 10 b= 25 Unable to Length 16.6 10 c= 40 Develop

10 b= 25 Pressure 10 a= 15

From 10 a= To 10 b= Length 10 c=

10 b= 10 a=

From 10 a= To 10 b= Length 10 c=

10 b= 10 a=

From 10 a= To 10 b= Length 10 c=

10 b= 10 a=

From 10 a= To 10 b= Length 10 c=

10 b= 10 a=

NOTES:

(1) Required incremental gauge pressure in psi for the five test increments:

200 psi

(Note: 1 foot of water = 0.434 psi) Pi = pressure index set by Engineer = 2 psi per foot of rock above midpoint of test interval, UNO

(2) Actual gauge pressure, p in psi:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet)

(3) Lugeon Value = flow volume (gal) x 142 psi

0.0804 x Test interval (ft) x test duration (min) x test pressure (psi) For P0 (Reference Pressure) = 142 psi b = 0.7 x "c" a = 0.4 x "c" c = max test pressure < or = limit set by Engineer

3'

Time Test Begun

(hr:min)

Depth Interval (feet)

A lower max pressure [c = 1.25 psi/ft rock < or = 150 psi] is required in Boring 08-EBD-72.

East Branch Dam 061568-16

08-EBD-73

c = max test pressure = [ thickness of rock overburden above midpoint of test interval in feet x Pi ] < or =

Norm Hormel Bean 21

Neptune 49661897

Driller1707.45' 175.40'

Pennsylvania Drilling CompanyContractor

Type & No. of Pump Type & No. of Water Meter

Test Duration (min) Gauge Pressure (psi) Volume of Test Flow

(gal)

Lugeon

USACE Pgh District

FIELD PERMEABILITY TESTS IN BOREHOLES

PACKER TESTS - HOULSBY METHOD

Project No. Calculated By FO Date 12/1/2010 Boring No. Checked By FO Date 12/1/2010 Boring Dia. 3.78125 inches

Ground Surface Elevation, G.S.

Depth to Groundwater, GWT Distance from G.S. to Swivel

Required Actual Required (1) Actual (2) Test(3)

Increment Value

Group(4) Rep. Value(4)

From 82.9 11:46 10 10 a= 72 50 1.2 0.3 To 99.2 11:58 10 10 b= 126 100 10.2 1.1 Length 16.3 12:10 10 10 c= 180 140 93.2 7.2

12:22 10 10 b= 126 100 56.3 6.1 12:33 10 10 a- 72 50 29.2 6.3

From 67.9 12:43 10 10 a= 40 45 15.8 3.8 To 84.2 1:02 10 10 b= 70 75 23.9 3.5 Length 16.3 1:13 10 10 c= 100 100 65.0 7.0

1:24 10 10 b= 70 75 51.1 7.4 1:35 10 10 a= 40 40 29.0 7.9

From 52.9 1:59 10 10 a= 50 55 22.2 4.4 To 69.2 2:10 10 10 b= 80 85 60.6 7.7 Length 16.3 2:20 10 10 c= 120 105 169.3 17.5

2:33 10 10 b= 80 80 154.4 20.9 2:44 10 10 a= 50 55 111.6 22.0

From 39.2 3:04 10 10 a= 40 45 48.5 11.7 To 55.5 3:15 10 10 b= 70 70 126.9 19.6 Length 16.3 3:26 10 10 c= 100 85 185.9 23.7

3:37 10 10 b= 70 70 170.4 26.4 3:57 10 10 a= 40 40 131.5 35.6

From 21.5 4:28 10 8 a= 25 0 137.7 #DIV/0!

To 37.8 10 b= 40 Unable to Length 16.3 10 c= 60 Develop

10 b= 40 Pressure 10 a= 25

NOTES:

(1) Required incremental gauge pressure in psi for the five test increments:

200 psi

(Note: 1 foot of water = 0.434 psi) Pi = pressure index set by Engineer = 2 psi per foot of rock above midpoint of test interval, UNO

(2) Actual gauge pressure, p in psi:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet)

(3) Lugeon Value = flow volume (gal) x 142 psi

0.0804 x Test interval (ft) x test duration (min) x test pressure (psi) For P0 (Reference Pressure) = 142 psi

USACE Pgh District

FIELD PERMEABILITY TESTS IN BOREHOLES

PACKER TESTS - HOULSBY METHOD

Group D 22.0

Group D 35.6

Group C

Test Duration (min) Gauge Pressure (psi) Volume of Test Flow

(gal)

Lugeon

Pennsylvania Drilling CompanyContractor

Type & No. of Pump Type & No. of Water Meter

East Branch Dam 061568-16

08-EBD-73

c = max test pressure = [ thickness of rock overburden above midpoint of test interval in feet x Pi ] < or =

Norm Hormel Bean 21

Neptune 49661897

Driller1707.45' 175.40' b = 0.7 x "c" a = 0.4 x "c" c = max test pressure < or = limit set by Engineer varies

Time Test Begun

(hr:min)

Depth Interval (feet)

A lower max pressure [c = 1.25 psi/ft rock < or = 150 psi] is required in Boring 08-EBD-72.

3.4

Group D 7.9

Project No. Calculated By FO Date 12/1/2010 Boring No. Checked By FO Date 12/1/2010 Boring Dia. 3.78125 inches

Ground Surface Elevation, G.S.

Depth to Groundwater, GWT Distance from G.S. to Swivel

Required Actual Required (1) Actual (2) Test(3)

Increment Value

Group(4) Rep. Value(4)

From 172.9 2:43 10 4 a= 50 55 0.0 0.0 To 189.2 2:47 10 10 b= 100 105 2.9 0.3 Length 16.3 2:59 10 10 c= 150 140 130.0 10.1

3:09 10 10 b= 100 105 105.9 10.9 3:20 10 10 a= 50 55 63.5 12.5

From 160.9 7:52 10 10 a= 50 55 3.0 0.6 To 177.2 8:04 10 10 b= 100 105 10.2 1.1 Length 16.3 8:15 10 10 c= 150 150 104.6 7.6

8:25 10 10 b= 100 105 77.7 8.0 8:36 10 10 a= 50 55 35.3 7.0

From 145.0 8:57 10 10 a= 50 50 115.2 25.0 To 161.3 9:08 10 10 b= 100 70 165.3 25.6 Length 16.3 9:19 10 10 c= 150 50 135.1 29.3

10 b= 100 Unable to 10 a= 50 Develop

Pressure

From 130.9 9:38 10 10 a= 50 50 68.0 14.7 To 147.2 9:50 10 10 b= 100 90 164.0 19.7 Length 16.3 10:02 10 10 c= 150 50 116.2 25.2

10 b= 100 Unable to 10 a= 50 Develop

Pressure

From 116.4 10:23 10 10 a= 50 55 32.4 6.4 To 132.7 10:35 10 10 b= 100 105 79.6 8.2 Length 16.3 10:45 10 10 c= 150 145 153.9 11.5

10:56 10 10 b= 100 105 117.7 12.1 11:07 10 10 a= 50 55 67.7 13.3

NOTES:

(1) Required incremental gauge pressure in psi for the five test increments:

200 psi

(Note: 1 foot of water = 0.434 psi) Pi = pressure index set by Engineer = 2 psi per foot of rock above midpoint of test interval, UNO

(2) Actual gauge pressure, p in psi:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet)

(3) Lugeon Value = flow volume (gal) x 142 psi

0.0804 x Test interval (ft) x test duration (min) x test pressure (psi) For P0 (Reference Pressure) = 142 psi b = 0.7 x "c" a = 0.4 x "c" c = max test pressure < or = limit set by Engineer varies

Time Test Begun

(hr:min)

Depth Interval (feet)

A lower max pressure [c = 1.25 psi/ft rock < or = 150 psi] is required in Boring 08-EBD-72.

12.5

Group D 8.0

East Branch Dam 061568-16

08-EBD-73

c = max test pressure = [ thickness of rock overburden above midpoint of test interval in feet x Pi ] < or =

Norm Hormel Bean 21

Neptune 49661897

Driller1707.45' 175.40'

Pennsylvania Drilling CompanyContractor

Type & No. of Pump Type & No. of Water Meter

Test Duration (min) Gauge Pressure (psi) Volume of Test Flow

(gal)

Lugeon

USACE Pgh District

Group D 13.3

FIELD PERMEABILITY TESTS IN BOREHOLES

PACKER TESTS - HOULSBY METHOD

Group D

Project Name Tested By RKS Date 11/4/2008 Project No. Calculated By FO Date 12/1/2010 Boring No. Checked By FO Date 12/1/2010 Boring Dia. 3.78125 inches

Ground Surface Elevation, G.S.

Depth to Groundwater, GWT Distance from G.S. to Swivel

Required Actual Required (1) Actual (2) Test(3)

Increment Value

Group(4) Rep. Value(4)

From 245.9 10:54 10 10 a= 50 55 0.7 0.1 To 262.2 11:04 10 6 b= 100 95 1.0 0.2 Length 16.3 11:11 10 4 c= 150 155 0.5 0.1

11:16 10 4 b= 100 100 0.5 0.1 11:20 10 4 a= 50 55 0.2 0.1

From 230.9 11:36 10 10 a= 50 55 14.3 2.8 To 247.2 11:47 10 10 b= 100 105 16.2 1.7 Length 16.3 11:58 10 10 c= 150 150 16.1 1.2

12:08 10 10 b= 100 100 9.6 1.0 12:19 10 10 a= 50 55 6.3 1.2

From 212.9 1:53 10 4 a= 50 0 56.9 #DIV/0!

To 229.2 10 b= 100 Unable to Length 16.3 10 c= 150 Develop

10 b= 100 Pressure 10 a= 50

From 200.9 2:06 10 4 a= 50 0 56.5 #DIV/0!

To 217.2 10 b= 100 Unable to Length 16.3 10 c= 150 Develop

10 b= 100 Pressure 10 a= 50

From 183.5 2:22 10 4 a= 50 0 57.0 #DIV/0!

To 199.5 10 b= 100 Unable to Length 16 10 c= 150 Develop

10 b= 100 Pressure 10 a= 50

NOTES:

(1) Required incremental gauge pressure in psi for the five test increments:

200 psi

(Note: 1 foot of water = 0.434 psi) Pi = pressure index set by Engineer = 2 psi per foot of rock above midpoint of test interval, UNO

(2) Actual gauge pressure, p in psi:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet)

(3) Lugeon Value = flow volume (gal) x 142 psi

0.0804 x Test interval (ft) x test duration (min) x test pressure (psi) For P0 (Reference Pressure) = 142 psi b = 0.7 x "c" a = 0.4 x "c" c = max test pressure < or = limit set by Engineer varies

Time Test Begun

(hr:min)

Depth Interval (feet)

A lower max pressure [c = 1.25 psi/ft rock < or = 150 psi] is required in Boring 08-EBD-72.

0.1

Group E 1.2

East Branch Dam 061568-16

08-EBD-73

c = max test pressure = [ thickness of rock overburden above midpoint of test interval in feet x Pi ] < or =

Norm Hormel Bean 21

Neptune 49661897

Driller1707.45' 175.40'

Pennsylvania Drilling CompanyContractor

Type & No. of Pump Type & No. of Water Meter

Test Duration (min) Gauge Pressure (psi) Volume of Test Flow

(gal)

Lugeon

USACE Pgh District

FIELD PERMEABILITY TESTS IN BOREHOLES

PACKER TESTS - HOULSBY METHOD

Group A

Project Name Tested By DLW Date 4/13/2009 Project No. Calculated By FO Date 12/6/2010 Boring No. Checked By AJA Date 12/6/2010 Boring Radius

Ground Surface Elevation, G.S.

Depth to Groundwater, GWT Distance from G.S. to Swivel

Required Actual Required (1) Actual (2) Test(3)

Increment Value

Group(4) Rep. Value(4)

From 191 1:53 10 10 a= 32 32 8.3 4.2 To 202 2:03 10 10 b= 56 58 15.4 4.3 Length 11 2:13 10 10 c= 80 80 20.1 4.0

2:23 10 10 b= 56 58 5.3 1.5 2:33 10 10 a= 32 30 1.1 0.6

From 181 2:55 10 10 a= 32 26 1.0 0.6 To 192 3:05 10 10 b= 56 60 1.2 0.3 Length 11 3:15 10 10 c= 80 80 1.0 0.2

3:25 10 10 b= 56 62 0.75 0.2 3:35 10 10 a= 32 28 0.45 0.3

From 171 4:00 10 9 a= 32 22 137.8 111.7 To 182 4:17 10 5 b= 56 46 92.5 64.6 Length 11 4:29 10 4 c= 80 62 85.0 55.0

4:42 10 5 b= 56 36 89.8 80.1 5:00 10 4 a= 32 18 62.5 139.4

From 10 a= To 10 b= Length 10 c=

10 b= 10 a=

From 10 a= To 10 b= Length 10 c=

10 b= 10 a=

NOTES:

(1) Required incremental gauge pressure in psi for the five test increments:

200 psi

(Note: 1 foot of water = 0.434 psi) Pi = pressure index set by Engineer = 2 psi per foot of rock above midpoint of test interval, UNO

(2) Actual gauge pressure, p in psi:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet)

(3) Lugeon Value = flow volume (gal) x 142 psi

0.0804 x Test interval (ft) x test duration (min) x test pressure (psi) For P0 (Reference Pressure) = 142 psi

A lower max pressure [c = 1.25 psi/ft rock < or = 150 psi] is required in Boring 08-EBD-72.

b = 0.7 x "c" a = 0.4 x "c" c = max test pressure < or = limit set by Engineer c = max test pressure = [ thickness of rock overburden above midpoint of test interval in feet x P i ] < or =

Norm Hormel Bean 21

Neptune 49661897

Driller1646.568 114.10

2.00

Time Test Begun

(hr:min)

Depth Interval (feet)

East Branch Dam 061568-16

08-EBD-74

1.5"

Pennsylvania Drilling CompanyContractor

Type & No. of Pump Type & No. of Water Meter

0.6

Group B 0.2

Test Duration (min) Gauge Pressure (psi) Volume of Test Flow

(gal)

Lugeon

USACE Pgh District

FIELD PERMEABILITY TESTS IN BOREHOLES

PACKER TESTS - HOULSBY METHOD

Group B 55.0

Group E

Project Name Tested By RKS Date 4/9/2009 Project No. Calculated By FO 12/6/2010 Boring No. Checked By AJA 12/6/2010 Boring Radius

Ground Surface Elevation, G.S.

Depth to Groundwater, GWT Distance from G.S. to Swivel

Required Actual Required (1) Actual (2) Test(3)

Increment Value

Group(4) Rep. Value(4)

From 232.7 2:08 10 10 a= 59.6 66.0 21.8 5.3 To 243.7 2:18 10 10 b= 104.3 105.0 30.0 4.6 Length 11 2:28 10 10 c= 149.0 150.0 40.6 4.3

2:38 10 10 b= 104.3 100.0 22.7 3.6 2:48 10 10 a= 59.6 60.0 14.9 4.0

From 222.2 Aborted 10 0 a= To 233.2 due to 10 0 b= Length 11 blown air 10 0 c= hose 10 0 b= 10 0 a=

From 221 11:23 10 10 a= 47.6 52 7.1 2.2 To 232 11:34 10 10 b= 83.3 80 8.8 1.8 Length 11 11:44 10 10 c= 119 124 13.0 1.7

11:54 10 10 b= 83.3 78 8.5 1.7 12:04 10 10 a= 47.6 50 6.9 2.2

From 211 12:26 10 4 a= 39.4 38 0.0 0.0 To 222 12:30 10 4 b= 69.3 72 0.0 0.0 Length 11 12:34 10 4 c= 99 102 0.0 0.0

No Take Zone b= 69.3 No Take Zone a= 39.4

From 201 12:53 10 10 a= 32 35 26.0 11.9 To 212 1:03 10 10 b= 56 56 33.8 9.7 Length 11 1:13 10 10 c= 80 80 39.6 7.9

1:23 10 10 b= 56 54 19.1 5.7 1:33 10 10 a= 32 28 5.1 2.9

NOTES:

(1) Required incremental gauge pressure in psi for the five test increments:

200 psi

(Note: 1 foot of water = 0.434 psi) Pi = pressure index set by Engineer = 2 psi per foot of rock above midpoint of test interval, UNO

(2) Actual gauge pressure, p in psi:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet)

(3) Lugeon Value = flow volume (gal) x 142 psi

0.0804 x Test interval (ft) x test duration (min) x test pressure (psi) For P0 (Reference Pressure) = 142 psi

(4) From Table 1 (Back of Form)

USACE Pgh District

Group E 2.9

FIELD PERMEABILITY TESTS IN BOREHOLES

PACKER TESTS - HOULSBY METHOD

Group B 1.7

Group E 4.0

Test Duration (min) Gauge Pressure (psi) Volume of Test Flow

(gal)

Lugeon

Pennsylvania Drilling CompanyContractor

Type & No. of Pump Type & No. of Water Meter

East Branch Dam 061568-16

08-EBD-74

1.5" c = max test pressure = [ thickness of rock overburden above midpoint of test interval in feet x P i ] < or =

Norm Hormel Bean 21

Neptune 49661897

Driller1646.568 114.10

2.00

Time Test Begun

(hr:min)

Depth Interval (feet)

A lower max pressure [c = 1.25 psi/ft rock < or = 150 psi] is required in Boring 08-EBD-72.

Date 11/22/2010 Date 11/22/2010 Date 7/6/2011

Feed Pipe I.D. 1.0 inch Packer Pressure 300 psi

Groundwater Depth

Required Actual Actual (2) Test(3)

Increment Value

Group(4) Rep. Value(4)

From 230 2:39 10 10 a= 63 60 51.2 7.49 2:49 10 10 b= 127 130 78.1 7.37 H2O Rise 3:09 10 10 c= 190 190 246.5 17.84 H2O Rise

To 240 3:19 10 10 b= 127 130 75.1 7.09 H2O Rise 3:29 10 10 a= 63 60 5.9 0.86

From 240 8:15 10 10 a= 52 52 3.7 0.58 Initial GW (149.6) 149.6 ft.

8:25 10 10 b= 100 100 14.0 1.56 150.10 8:35 10 10 c= 150 150 5.2 0.45 150.90

To 250 8:45 10 10 b= 102 102 2.8 0.31 151.00 8:55 10 10 a= 52 52 3.6 0.56 150.95

From 250 9:20 10 10 a= 50 50 5.7 0.90 Initial GW (147.3) 152.5 ft.

9:30 10 10 b= 100 100 34.5 3.84 152.95 9:40 10 10 c= 150 150 51.4 4.40 150.50

To 260 9:50 10 10 b= 100 101 18.6 2.06 150.40 10:00 10 10 a= 50 50 7.7 1.22 150.45

From 260 10:35 10 10 a= 50 51 24.3 3.82 Initial GW (149.9) 150.3 ft.

10:45 10 10 b= 100 102 35.0 3.85 150.30 10:55 10 10 c= 150 150 46.1 3.95 150.10

To 270 11:05 10 10 b= 100 101 30.6 3.39 149.90 11:15 10 10 a= 50 50 25.8 4.09 148.50

From 270 11:43 10 10 a= 50 50 4.8 0.76 Initial GW (147.5) 150.4 ft.

11:53 10 10 b= 100 99 8.8 0.99 151.30 12:03 10 10 c= 150 150 8.4 0.72 152.00

To 280 12:13 10 10 b= 100 102 5.1 0.56 152.40 12:23 10 10 a= 50 50 6.8 1.08 152.70

(3) Lugeon Value = 1863(flow volume [gal]/((L, test interval[ft])(test duration [min]))) test pressure (psi)+0.434*Elevation Head (Distance from swivel to groundwater table)

Group A 0.8

Group A 3.8

Volume of Test Flow

(gal)

Lugeon

2.9

Group C

Group C

7.2

Group A 0.7

T. Grzejka N. Hormel

Gauge Pressure (psi)

Driller1696.65 ft NAVD88

Type & No. of Water Meter 147.8

7.5 Seametric 008178

Required (1)

FIELD PERMEABILITY TESTS IN BOREHOLES

PACKER TESTS - HOULSBY METHOD

Boring No.

Project No.

Project Name Tested By

Calculated By Checked By

USACE Pgh District East Branch Dam

E-27 KMB

Type & No. of Pump b = 0.67 x "c" a = 0.33 x "c"

Time Test Begun

(hr:min)

Depth Interval (feet)

Test Duration (min)

HQ

(Note: 1 foot of water = 0.434 psi) c = max test pressure = [1 psi per foot above the piezometric surface] + [0.57 psi per foot below the piezometric surface]

N. Hormel

(4) From Table 1 (Back of Form)

Ground Surface Elevation, G.S.

Depth to Groundwater, GWT Distance from G.S. to Swivel

(1) Required incremental gauge pressure in psi for the five test increments:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet) c = max test pressure

(2) Actual gauge pressure, p in psi:

Boring Dia.

Pa DrillingContractor

Bean 21

Date 11/22/2010 Date 11/22/2010 Date 7/6/2011

Feed Pipe I.D. 1.0 inch Packer Pressure 300 psi

Groundwater Depth

Required Actual Actual (2) Test(3)

Increment Value

Group(4) Rep. Value(4)

From 280 1:01 10 10 a= 49 49 6.4 1.02 Initial GW (150.2) 152.6 ft.

1:11 10 10 b= 100 100 29.4 3.27 152.80 1:21 10 10 c= 150 150 21.1 1.81 152.60

To 290 1:31 10 10 b= 101 101 116.8 12.92 152.50 1:41 10 10 a= 50 50 24.0 3.81 152.50

From 290 2:04 10 10 a= 50 50 4.7 0.75 Initial GW (150.63) 152.2 ft.

2:14 10 10 b= 100 101 9.2 1.02 152.60 2:24 10 10 c= 150 149 11.8 1.02 152.75

To 300 2:34 10 10 b= 100 101 8.0 0.89 152.90 2:44 10 10 a= 50 51 4.7 0.74 153.00

From 300 3:24 10 10 a= 50 51 13.2 2.08 Initial GW (151.35) 151.6 ft.

3:34 10 10 b= 100 102 19.5 2.14 151.40 3:44 10 10 c= 150 153 28.4 2.40 150.90

To 310 3:54 10 10 b= 100 101 19.7 2.18 150.90 4:04 10 10 a= 50 51 11.5 1.81 150.95

From 310 8:22 10 10 a= 50 50 1.7 0.27 Initial GW (151.8) 152.95 ft.

8:32 10 10 b= 100 102 4.7 0.52 153.00 8:42 10 10 c= 150 150 7.2 0.62 152.80

To 320 8:52 10 10 b= 100 102 0.2 0.02 152.85 9:02 10 10 a= 50 50 0.3 0.05 152.95

From 320 9:26 10 10 a= 50 50 0.3 0.05 Initial GW (150.9) 152.1 ft.

9:36 10 10 b= 100 102 6.4 0.70 152.10 9:46 10 10 c= 150 150 9.4 0.81 152.20

To 330 9:56 10 10 b= 100 99 6.1 0.68 152.30 10:06 10 10 a= 50 50 0.3 0.05 152.35

(3) Lugeon Value = 1863(flow volume [gal]/((L, test interval[ft])(test duration [min]))) test pressure (psi)+0.434*Elevation Head (Distance from swivel to groundwater table)

(4) From Table 1 (Back of Form) c = max test pressure = [1 psi per foot above the piezometric surface] + [0.57 psi per foot below the piezometric surface] (Note: 1 foot of water = 0.434 psi)

(2) Actual gauge pressure, p in psi:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet)

0.3

Group C 0.7

(1) Required incremental gauge pressure in psi for the five test increments:

a = 0.33 x "c" b = 0.67 x "c" c = max test pressure

Group C

Group A 0.9

Group A 2.1

Volume of Test Flow

(gal)

Lugeon

Required (1)

Group A 4.6

Depth Interval (feet)

Time Test Begun

(hr:min)

Test Duration (min) Gauge Pressure (psi)

Distance from G.S. to Swivel 7.5 Type & No. of Water Meter Seametric 008178 Depth to Groundwater, GWT 147.8 Type & No. of Pump Bean 21 Ground Surface Elevation, G.S. 1696.65 ft NAVD88 Driller N. Hormel

Boring Dia. HQ Contractor Pa Drilling

KMB

T. Grzejka N. Hormel

FIELD PERMEABILITY TESTS IN BOREHOLES

PACKER TESTS - HOULSBY METHOD

USACE Pgh District Project Name East Branch Dam Tested By Project No. 505 Calculated By Boring No. E-27 Checked By

Date 11/22/2010 Date 11/22/2010 Date 7/6/2011

Feed Pipe I.D. 1.0 inch Packer Pressure 300 psi

Groundwater Depth

Required Actual Actual (2) Test(3)

Increment Value

Group(4) Rep. Value(4)

From 330 10:34 10 10 a= 50 51 0.6 0.09 Initial GW (151.8) 152.1 ft.

10:44 10 10 b= 100 99 0.9 0.10 152.20 10:54 10 10 c= 150 152 4.1 0.35 152.30

To 340 11:04 10 10 b= 100 102 2.6 0.29 152.35 11:14 10 10 a= 50 50 0.4 0.06 152.40

From 288 11:40 10 10 a= 50 52 11.6 3.62 11:52 10 10 b= 100 100 27.3 6.08 12:05 10 10 c= 150 153 32.2 5.44

To 293 12:18 10 10 b= 100 100 21.6 4.81 12:30 10 10 a= 50 51 5.5 1.73

From 253 13:12 10 10 a= 50 50 12.8 4.06 13:23 10 10 b= 100 100 15.2 3.38 13:37 10 10 c= 150 151 21.1 3.60

To 258 13:49 10 10 b= 100 100 20.3 4.52 14:00 10 10 a= 50 51 13.5 4.25

From 234 14:33 10 10 a= 50 52 5.8 1.81 14:44 10 10 b= 100 100 5.8 1.29 14:58 10 10 c= 150 153 8.2 1.39

To 239 15:09 10 10 b= 100 100 6.6 1.47 15:20 10 10 a= 50 51 6.0 1.89

From 229 Packer Blew a= b= c=

To b= 234 a=

(3) Lugeon Value = 1863(flow volume [gal]/((L, test interval[ft])(test duration [min]))) test pressure (psi)+0.434*Elevation Head (Distance from swivel to groundwater table)

FIELD PERMEABILITY TESTS IN BOREHOLES

PACKER TESTS - HOULSBY METHOD

USACE Pgh District Project Name East Branch Dam Tested By Project No. 505 Calculated By Boring No. E-27 Checked By Boring Dia. HQ

Contractor Pa Drilling Ground Surface Elevation, G.S. 1696.65 ft NAVD88 Driller N. Hormel

100.0

(1) Required incremental gauge pressure in psi for the five test increments:

Type & No. of Water Meter Seametric 008178

Depth Interval (feet)

Time Test Begun

(hr:min)

Test Duration (min) Gauge Pressure (psi) Volume of Test Flow

(gal)

Group C 5.4

Group B 3.6

Group B 1.4

(4) From Table 1 (Back of Form) c = max test pressure = [1 psi per foot above the piezometric surface] + [0.57 psi per foot below the piezometric surface] (Note: 1 foot of water = 0.434 psi)

(2) Actual gauge pressure, p in psi:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet)

KMB

T. Grzejka N. Hormel a = 0.33 x "c" b = 0.67 x "c" c = max test pressure

Lugeon

Required (1)

Depth to Groundwater, GWT 147.8 Type & No. of Pump Bean 21 Distance from G.S. to Swivel 7.5

Group C 0.2

Date 11/22/2010 Date 11/22/2010 Date 7/6/2011

Feed Pipe I.D. 1.0 inch Packer Pressure 300 psi

Groundwater Depth

Required Actual Actual (2) Test(3)

Increment Value

Group(4) Rep. Value(4)

From 224 Packer Blew a= #DIV/0!

b= c=

To 229 b= a=

From a= b= c=

To b= a=

From a= b= c=

To b= a=

From a= b= c=

To b= a=

From a= b= c=

To b= a=

(3) Lugeon Value = 1863(flow volume [gal]/((L, test interval[ft])(test duration [min]))) test pressure (psi)+0.434*Elevation Head (Distance from swivel to groundwater table) c = max test pressure = [1 psi per foot above the piezometric surface] + [0.57 psi per foot below the piezometric surface] (Note: 1 foot of water = 0.434 psi)

(2) Actual gauge pressure, p in psi:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet)

(4) From Table 1 (Back of Form) a = 0.33 x "c" b = 0.67 x "c" c = max test pressure

100.0

(1) Required incremental gauge pressure in psi for the five test increments:

Lugeon

Required (1)

Depth to Groundwater, GWT 147.8 Type & No. of Pump Bean 21 Distance from G.S. to Swivel 7.5 Type & No. of Water Meter Seametric 008178

Depth Interval (feet)

Time Test Begun

(hr:min)

Test Duration (min) Gauge Pressure (psi) Volume of Test Flow

(gal)

Boring Dia. HQ Contractor Pa Drilling

Ground Surface Elevation, G.S. 1696.65 ft NAVD88 Driller N. Hormel

Project No. 505 Calculated By T. Grzejka Boring No. E-27 Checked By KMB

FIELD PERMEABILITY TESTS IN BOREHOLES

PACKER TESTS - HOULSBY METHOD

USACE Pgh District Project Name East Branch Dam Tested By N. Hormel

Date 5/9/2011 Date 5/4/2011 Date 7/6/2011

Feed Pipe I.D. 1.0 inch Packer Pressure 300 psi

Groundwater Depth

Required Actual Actual (2) Test(3)

Increment Value

Group(4) Rep.

Value(4)

From 291 1231 10 10 a= 50 50 0.0 0.00 Initial GW (91.1) 91.0 ft.

1241 10 10 b= 100 100 1.4 0.18 91.05 1251 10 10 c= 150 150 0.0 0.00 Initial GW (90.9) 91.3 ft.

To 301 1301 10 10 b= 100 100 0.1 0.01 91.35 1311 10 10 a= 50 50 0.0 0.00 91.30

From 281 1432 10 10 a= 50 50 1.0 0.20 Initial GW (92.15) 90.6 ft.

1442 10 10 b= 100 100 4.3 0.57 90.65 1452 10 10 c= 150 150 5.7 0.55 90.65

To 291 1502 10 10 b= 100 100 1.8 0.24 90.60 1512 10 10 a= 50 50 0.8 0.16 90.60

From 271 1536 10 10 a= 50 50 0.0 0.00 Initial GW (90.2) 90.4 ft.

1546 10 10 b= 100 100 1.5 0.20 90.40 1556 10 10 c= 150 150 0.4 0.04 90.35

To 281 1606 10 10 b= 100 99 0.0 0.00 90.35 1616 10 10 a= 50 50 0.4 0.08 90.50

From 261 1638 10 10 a= 50 50 17.7 3.60 Initial GW (90.35) 90.0 ft.

1648 10 10 b= 100 100 32.0 4.21 89.60 1658 10 10 c= 150 150 50.2 4.88 88.95

To 271 1708 10 10 b= 100 100 49.1 6.46 88.70 1718 10 10 a= 50 50 26.1 5.30 88.75

From 251 0817 10 10 a= 50 50 0.6 0.12 Initial GW (88.6) 88.5 ft.

0827 10 10 b= 100 100 0.0 0.00 88.50 0837 10 10 c= 150 150 0.2 0.02 88.40

To 261 0847 10 10 b= 100 102 0.8 0.10 88.45 0857 10 10 a= 50 52 0.0 0.00 88.35

(3) Lugeon Value = 1863 (( flow volume [gal]/(L, test interval[ft])(test duration [min])) test pressure (psi)+0.434*Elevation Head (Distance from swivel to groundwater table)

FIELD PERMEABILITY TESTS IN BOREHOLES

PACKER TESTS - HOULSBY METHOD

Group A 0.1

Group D 6.5

Required (1)

Gauge Pressure (psi)

Group A

Type & No. of Water Meter

USACE Pgh District

Boring Dia. 3.75 inch Diameter Boring No.

Project No.

Project Name

Pennsylvania DrillingContractor

Type & No. of Pump

Group C 0.4

0.0

Volume of Test Flow

(gal)

N. Hormel Bean 21

SeaMetrics 008178

Driller a = 0.33 x "c"

Time Test Begun

(hr:min)

Depth Interval (feet) c = max test pressure = [1 psi per foot above the piezometric surface] + [0.57 psi per foot below the piezometric surface]

Test Duration (min) Lugeon

Group A 0.0

East Branch Dam E-29

(4) From Table 1 (Back of Form)

Ground Surface Elevation, G.S.

Depth to Groundwater, GWT Distance from G.S. to Swivel

(1) Required incremental gauge pressure in psi for the five test increments:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet) c = max test pressure

1706.64 ft NAVD88 92.0 4.0

(Note: 1 foot of water = 0.434 psi)

(2) Actual gauge pressure, p in psi:

b = 0.67 x "c"

KMB

T. Grzejka N. HormelTested By

Calculated By Checked By

Date 5/9/2011 Date 5/4/2011 Date 7/6/2011

Feed Pipe I.D. 1.0 inch Packer Pressure 300 psi

Groundwater Depth

Required Actual Actual (2) Test(3)

Increment Value

Group(4) Rep.

Value(4)

From 241 0918 10 10 a= 50 50 0.0 0.00 Initial GW (88.35) 88.2 ft.

0928 10 10 b= 100 100 0.0 0.00 88.20 0938 10 10 c= 150 150 0.5 0.05 88.20

To 251 0948 10 10 b= 100 100 0.0 0.00 88.15 0958 10 10 a= 50 50 0.0 0.00 88.10

From 231 1020 10 10 a= 50 50 0.0 0.00 Initial GW (88.25) 88.2 ft.

1030 10 10 b= 100 100 0.1 0.01 88.15 1040 10 10 c= 150 150 4.1 0.40 87.70

To 241 1050 10 10 b= 100 100 0.0 0.00 87.90 1100 10 10 a= 50 50 0.0 0.00 87.95

From 221 1118 10 10 a= 50 50 7.4 1.50 Initial GW (87.7) 87.5 ft.

1128 10 10 b= 100 100 9.1 1.20 87.30 1138 10 10 c= 150 150 13.1 1.27 87.10

To 231 1148 10 10 b= 100 100 7.5 0.99 87.10 1158 10 10 a= 50 50 5.0 1.02 87.15

From 211 1216 10 10 a= 50 50 11.6 2.36 Initial GW (86.95) 86.45 ft.

1226 10 10 b= 100 100 42.8 5.63 84.30 1236 10 10 c= 150 138 106.7 11.06 82.20

To 221 1246 10 10 b= 100 100 81.0 10.65 82.35 1256 10 10 a= 50 50 47.5 9.65 83.20

From 201 1318 10 10 a= 50 50 28.4 5.77 Initial GW (84.6) 84.6 ft.

1328 10 10 b= 100 100 40.2 5.29 84.40 1338 10 10 c= 150 150 98.7 9.59 82.75

To 211 1348 10 10 b= 100 105 48.9 6.21 82.85 1358 10 10 a= 50 50 36.1 7.34 83.85

(3) Lugeon Value = 1863 (( flow volume [gal]/(L, test interval[ft])(test duration [min])) test pressure (psi)+0.434*Elevation Head (Distance from swivel to groundwater table)

FIELD PERMEABILITY TESTS IN BOREHOLES

PACKER TESTS - HOULSBY METHOD

USACE Pgh District Project Name East Branch Dam Tested By Project No. 505 Calculated By Boring No. E-29 Checked By Boring Dia. 3.75 inch Diameter

Contractor Pennsylvania Drilling Ground Surface Elevation, G.S. 1706.64 ft NAVD88 Driller N. Hormel

Bean 21 Distance from G.S. to Swivel 4.0 Type & No. of Water Meter SeaMetrics 008178

(2) Actual gauge pressure, p in psi:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet)

(4) From Table 1 (Back of Form)

Lugeon

Required (1) a = 0.33 x "c" b = 0.67 x "c" c = max test pressure

Group A 0.0

Group A 0.1

Group E 1.0

Group C 8.1

KMB

T. Grzejka N. Hormel c = max test pressure = [1 psi per foot above the piezometric surface] + [0.57 psi per foot below the piezometric surface] (Note: 1 foot of water = 0.434 psi)

Group C 5.7

(1) Required incremental gauge pressure in psi for the five test increments:

Depth Interval (feet)

Time Test Begun

(hr:min)

Test Duration (min) Gauge Pressure (psi) Volume of Test Flow

(gal)

Depth to Groundwater, GWT 92.0 Type & No. of Pump

Date 5/9/2011 Date 5/4/2011 Date 7/6/2011

Feed Pipe I.D. 1.0 inch Packer Pressure 300 psi

Groundwater Depth

Required Actual Actual (2) Test(3)

Increment Value

Group(4) Rep.

Value(4)

From 191 1415 10 10 a= 50 50 4.3 0.87 Initial GW (83.7) 84.85 ft.

1425 10 10 b= 100 100 20.1 2.64 84.80 1435 10 10 c= 150 150 111.8 10.87 79.15

To 201 1445 10 10 b= 100 100 92.1 12.11 77.05 1455 10 10 a= 50 50 47.9 9.74 78.20

From 181 1519 10 10 a= 46 50 40.8 8.29 Initial GW (82.5) 82.3 ft.

1529 10 10 b= 94 95 136.3 18.58 78.60 c= 140 Unable to #DIV/0!

To 191 b= 94 Develop Pressure #DIV/0!

1539 10 10 a= 46 50 87.5 17.78 77.90 From 171 1600 10 10 a= 45 46 19.3 4.10 Initial GW (76.95) 76.75 ft.

1610 10 10 b= 92 94 95.7 13.14 76.60 1620 10 10 c= 138 108 131.3 16.34 76.20

To 181 1630 10 10 b= 92 94 134.6 18.48 75.85 1640 10 10 a= 45 46 103.2 21.93 75.65

From 161 0919 10 10 a= 43 45 170.5 36.65 Initial GW (81.65) 76.5 ft.

0929 10 10 b= 88 60 200.6 36.76 74.85

10 c= 132 Unable to #DIV/0!

To 171 10 b= 88 Develop Pressure #DIV/0! 79.70

1002 10 10 a= 43 45 153.9 33.08 Initial GW (79.7) 77.1 ft.

From 151 0813 10 10 a= 41 41 45.3 10.21 Initial GW (82.5) 78.0 ft.

0823 10 10 b= 84 90 71.9 10.17 76.30 0833 10 10 c= 126 105 107.8 13.69 74.80

To 161 0843 10 10 b= 84 88 110.4 15.86 74.25 0853 10 10 a= 41 42 78.6 17.50 74.70

(3) Lugeon Value = 1863 (( flow volume [gal]/(L, test interval[ft])(test duration [min])) test pressure (psi)+0.434*Elevation Head (Distance from swivel to groundwater table)

FIELD PERMEABILITY TESTS IN BOREHOLES

PACKER TESTS - HOULSBY METHOD

USACE Pgh District Project Name East Branch Dam Tested By Project No. 505 Calculated By Boring No. E-29 Checked By Boring Dia. 3.75 inch Diameter

Contractor Pennsylvania Drilling Ground Surface Elevation, G.S. 1706.64 ft NAVD88 Driller N. Hormel

Bean 21 Distance from G.S. to Swivel 4.0 Type & No. of Water Meter SeaMetrics 008178

(2) Actual gauge pressure, p in psi:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet)

(4) From Table 1 (Back of Form)

Lugeon

Required (1) a = 0.33 x "c" b = 0.67 x "c" c = max test pressure

Group D 12.1

100.0

Group D 21.9

100.0

KMB

T. Grzejka N. Hormel c = max test pressure = [1 psi per foot above the piezometric surface] + [0.57 psi per foot below the piezometric surface] (Note: 1 foot of water = 0.434 psi)

Group D 17.5

(1) Required incremental gauge pressure in psi for the five test increments:

Depth Interval (feet)

Time Test Begun

(hr:min)

Test Duration (min) Gauge Pressure (psi) Volume of Test Flow

Date 5/9/2011 Date 5/4/2011 Date 7/6/2011

Feed Pipe I.D. 1.0 inch Packer Pressure 300 psi

Groundwater Depth

Required Actual Actual (2) Test(3)

Increment Value

Group(4) Rep.

Value(4)

From 141 1026 10 10 a= 39 42 85.0 18.93 Initial GW (76.55) 76.05 ft.

1036 10 10 b= 81 85 141.3 20.78 75.80 1046 10 10 c= 121 126 243.7 27.08 75.65

To 151 1056 10 10 b= 81 80 90.5 13.86 75.50 1106 10 10 a= 39 40 106.5 24.30 75.45

From 131 1136 10 10 a= 37 40 24.4 5.57 Initial GW (75.15) 75.55 ft.

1146 10 10 b= 77 79 71.5 11.04 74.85 1156 10 10 c= 107 120 140.0 16.13 74.30

To 141 1206 10 10 b= 77 80 120.5 18.45 73.90 1216 10 10 a= 37 40 88.1 20.10 73.80

From 121 1340 10 10 a= 35 35 81.1 19.71 Initial GW (81.35) 75.4 ft.

1350 10 10 b= 73 77 145.1 22.78 71.10 1400 10 10 c= 109 115 242.8 28.87 66.50

To 131 1410 10 10 b= 73 70 170.4 28.43 65.20 1420 10 10 a= 35 35 143.9 34.97 65.40

From 111 10 a= 33 Packer Failed 10 b= 73 10 c= 103

To 121 10 b= 73 10 a= 33

From 105 10 a= 32 Packer Failed 10 b= 65 10 c= 98

To 115 10 b= 65 10 a= 32

(3) Lugeon Value = 1863 (( flow volume [gal]/(L, test interval[ft])(test duration [min])) test pressure (psi)+0.434*Elevation Head (Distance from swivel to groundwater table) c = max test pressure = [1 psi per foot above the piezometric surface] + [0.57 psi per foot below the piezometric surface] (Note: 1 foot of water = 0.434 psi)

(2) Actual gauge pressure, p in psi:

p = pressure at gauge (psi) + 0.434 x height of gauge above ground surface (feet)

(4) From Table 1 (Back of Form) a = 0.33 x "c" b = 0.67 x "c" c = max test pressure

Group C 17.3

Group D 20.1

Group D 35.0

100.0

100.0

(1) Required incremental gauge pressure in psi for the five test increments:

Lugeon

Required (1)

Depth to…