Heart_Butte_Modification_Draft_Construction_Plans_(June_2024)_1.pdf

PDF 26 MB Posted Jul 31, 2024

Attached to: DK-AO Heart Butte Safety of Dam Modification
Solicitation number: DOIRFBO240024
Issued by: Department of the Interior Bureau of Reclamation

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Written by GovTribe AI · Jul 31, 2024

The document is the Heart Butte Modification Draft Construction Plans (June 2024) for the Department of the Interior Bureau of Reclamation's DK-AO Heart Butte Safety of Dam Modification contract opportunity. This special notice provides details on an upcoming industry day event and requests for the 2018-2021 Heart Butte Dam Corrective Action Study Geologic Exploration Report. The draft construction plans provide technical details related to the proposed modifications to the Heart Butte Dam. Interested parties should reference the full solicitation package, which includes the industry day notice and geotechnical report, to understand the full scope and requirements of this opportunity.

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00 21

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

F D

M O

LOCATION AND VICINITY

MAP

DENVER, CO

203-D-60002

2024-04-19

1Au to

R el

. 2 4.

_L O

O N&

.D W

, 2

M S

0 400'200'

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

Rivers and Creeks

State Highway

Interstate Highway

U.S. Highway

City

Capital City

Williston

Dickinson

Mandan Bismarck Jamestown Valley City

Minot

Devils Lake

Grafton

Grand Forks

Fargo West Fargo

Wahpeton

Elgin Carson

Mott

Glen Ullin

HebronRichardton

New Salem

Flasher

N or th D ak ot a

M in ne so taN or th D ak ot a

M on ta na

North Dakota South Dakota

Heart Butte Dam

Lake Tschida

Heart Butte Dam

Roads

AutoCAD SHX Text Heart River

AutoCAD SHX Text Lake Tschida

AutoCAD SHX Text

LEGEND

AutoCAD SHX Text

KEY MAP

AutoCAD SHX Text

VICINITY MAP

AutoCAD SHX Text

LOCATION MAP

N41393.37 E639520.53 El.2121.542

BM VERT1

N43173.14

E639310.81 El.2167.57

REF MARK

N AXIS OF DAM

N41054.19 E639420.84 El.2126.89

REF MARK

S AXIS 0+00

N43081.05

E639174.44 El.2169.85

BM VERT2

N41445.57 E639518.37 El.2119.78

BM REF1

N41049.05

E639320.95 El.2126.40

BM 100

N41383.40 E639833.64 El.2130.56

NO. 5 REBAR W/ YPC

N42892.47 E639576.33 El.2128.55

NO. 5 REBAR W/ YPC

N41381.47

E639143.98 El.2118.69

REF MARK

N41496.13

E639200.44 El.2095.37

REF MARK

N41633.17 E639659.53 El.2025.00

BM USBR

P P

2027.97

BM 380.5RT

20802100

21302140

80 20

SURVEY CONTROL POINT TABLE - LOCAL PROJECT GROUND COORDINATES

REFERENCED TO NAD 83 (2011)(EPOCH:2010.0000) AND GEOID12B

POINT

NAME

POINT NAME

BM VERT1

CP N AXIS OF DAM

CP S AXIS 0+00

BM VERT2

BM REF1

BM 100

BM 380.5RT

BM HB-S3

CP NO5 REBAR YPC

CP NAIL IN CONCRETE POST

LOCAL PROJECT

NORTHING (USSF)

41,393.37

43,173.14

41,054.19

43,081.05

41,445.57

41,049.05

42,024.13

42,147.83

41,383.40

42,892.47

41,381.47

41,496.13

LOCAL PROJECT

EASTING (USSF)

639,520.53

639,310.81

639,420.84

639,174.44

639,518.37

639,320.95

639,751.43

640,549.40

639,833.64

639,576.33

639,143.98

639,200.44

LOCAL PROJECT

ELEVATION (USSF)

2,121.542

2,167.57

2,126.89

2,169.85

2,119.78

2,126.40

2,027.97

2,026.20

2,130.56

2,128.55

2,118.69

2,095.37

LATITUDE (NORTH)

N46°35'42.46518"

N46°35'59.9945"

N46°35'39.1016"

N46°35'59.06324"

N46°35'42.9800"

N46°35'39.0344"

N46°35'48.7280"

N46°35'50.0797"

N46°35'42.4183"

N46°35'57.2684"

N46°35'42.2858"

N46°35'43.4266"

LONGITUDE (WEST)

W101°48'34.88783"

W101°48'38.3153"

W101°48'36.2339"

W101°48'40.24570"

W101°48'34.9312"

W101°48'37.6627"

W101°48'31.7326"

W101°48'20.3379"

W101°48'30.4028"

W101°48'34.4467"

W101°48'40.2757"

W101°48'39.4947"

NDSPCS NORTHING

(METERS)

104,040.988

104,583.380

103,937.623

104,555.315

104,056.897

103,936.056

104,233.217

104,270.914

104,037.950

104,497.846

104,037.363

104,072.305

NDSPCS EASTING

(METERS)

499,650.409

499,586.496

499,620.030

499,544.939

499,649.752

499,589.589

499,720.779

499,963.963

499,745.833

499,667.416

499,535.655

499,552.863

53 BM USBR HEADWALL 2021 41,633.17 639,659.53 2,025.00 N46°35'44.8546" W101°48'32.9551" 104,114.068 499,692.770

PRIMARY SURVEY CONTROL

SECONDARY SURVEY CONTROL DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL -

Robertson, Ronald A

Walsh, Christie S

Hardes, Charles

Robertson, Ronald A

Skinner, Norris D (Dave) Technical Services Supervisor

T H

S A

SHEET

B Y

D T

N U.

T O

O R

Managing

LAR M TA IOCE N

W in theWa estter

-S

O G

T D

TOPOGRAPHY AND

SURVEY CONTROL

BILLINGS, MT

203-600-60003

2021-07-26

1Au to

R el

. 2 3.

-1 .D

W G

2, 5:

0 300'150'

Robertson, Ronald A

Skinner, Norris D (Dave) Technical Services Supervisor

R el ea se d

AutoCAD SHX Text Edge of water

AutoCAD SHX Text Road - paved

AutoCAD SHX Text Road - gravel/dirt

AutoCAD SHX Text Road - 2 track

AutoCAD SHX Text Fence - 7 ft.

AutoCAD SHX Text Fence - 8 ft.

AutoCAD SHX Text Fence - woven

AutoCAD SHX Text Fence - wire

AutoCAD SHX Text Ditch

AutoCAD SHX Text Thalweg

AutoCAD SHX Text Riprap area

AutoCAD SHX Text Concrete

AutoCAD SHX Text Survey control point

AutoCAD SHX Text Benchmark

AutoCAD SHX Text

LEGEND

AutoCAD SHX Text Contour interval = 2 ft.

AutoCAD SHX Text Power - overhead

AutoCAD SHX Text Power - buried

AutoCAD SHX Text Phone - buried

AutoCAD SHX Text Lake Tschida

AutoCAD SHX Text River

AutoCAD SHX Text Heart

AutoCAD SHX Text Spillway Inlet

AutoCAD SHX Text Hoist House

AutoCAD SHX Text ND Highway 49

AutoCAD SHX Text Bullhead Lane

AutoCAD SHX Text ND Highway 49

AutoCAD SHX Text Maintenance Shop

AutoCAD SHX Text (This Area Not Surveyed)

AutoCAD SHX Text Overhead Transmission Lines

AutoCAD SHX Text Grid North NDSPCS

AutoCAD SHX Text 2021 SURVEYOR'S REPORT COORDINATES ARE LOCAL PROJECT - UNITS: U.S. SURVEY FEET (USSF) HORIZONTAL REFERENCE FRAME: NORTH DAKOTA STATE PLANE COORDINATES, SOUTH ZONE, NAD83 (2011), (Epoch 2010) NORTH DAKOTA STATE PLANE COORDINATES, SOUTH ZONE, NAD83 (2011), (Epoch 2010) Projection: North Dakota South Zone NAD83 (3302 ND S) Projection Type: Lambert Two VERTICAL REFERENCE FRAME: HEART BUTTE DAM LOCAL based on Pt. No. 101, Elev. 2,121.542-USSF HEART BUTTE DAM LOCAL based on Pt. No. 101, Elev. 2,121.542-USSF Pt. No. 101 (BC VERT1) Local Ellipsoid: GRS 1980 Geoid Model: GEOID12B NAVD88 Elevation: 2,123.109-USSF Vertical Reference Frame shift: NAVD 88 equals Heart Butte Local Vertical Reference Frame plus 1.567-Feet (GEOID12B) BASIS OF BEARINGS: Grid North, North Dakota South Zone, State Plane Coordinate System (3302 ND S), NAD 83. : Grid North, North Dakota South Zone, State Plane Coordinate System (3302 ND S), NAD 83. PROJECT COORDINATES used in this drawing are local and the units are U.S. Survey Feet (one U.S. Survey Foot = 12/39.37 meters). used in this drawing are local and the units are U.S. Survey Feet (one U.S. Survey Foot = 12/39.37 meters). To transform the Local Project Ground Plane Coordinates to North Dakota South Zone State Plane Coordinates (NDSSPC) in meters, add 300,000 feet to the Northings and add 1,000,000 feet to the Eastings; divide the resulting coordinates by the Ground Scale Factor of 1.000153 then multiply by 12/39.37 for NDSPCS in meters. 1. Bureau of Reclamation employee Mr. Brian Billman of Dakotas Area Office (DAO) began a control and topographic field survey Bureau of Reclamation employee Mr. Brian Billman of Dakotas Area Office (DAO) began a control and topographic field survey May 7, 2018 and completed it on May 11, 2018. Mr. Billman collected topographic survey data using two Trimble R8 GNSS receivers. Mr. Billman updated and incorporated 2013 Heart Butte Dam control and topographic field survey records generated by Bureau of Reclamation employee Mr. James Thornburg (retired). 2. For the May 2018 topographical and control survey, Mr. Billman referenced the project vertical control reference frame to Heart For the May 2018 topographical and control survey, Mr. Billman referenced the project vertical control reference frame to Heart Butte Dam control point (Point No. 101) "BC VERT1" (a 3- inch diameter bronze BUREAU OF RECLAMATION Bench Mark disk 34 inch diameter bronze BUREAU OF RECLAMATION Bench Mark disk stamped "2121.542") using Global Navigation Satellite System (GNSS) control quality measurements. 3. On May 7, 2018, Mr. Billman set up horizontal control on control point (Point No. 101) "BC VERT1" using GNSS static On May 7, 2018, Mr. Billman set up horizontal control on control point (Point No. 101) "BC VERT1" using GNSS static observations collected by a global positioning system (GPS) base receiver to collect static observations. Mr. Billman sent the static data to National Geodetic Survey's Online Positioning User System (OPUS). OPUS returned a report dated May 29, 2018. The results in the OPUS solution report passed the quality requirements of National Geodetic Survey for a high-quality OPUS solution. 4. For the 2021 topographical survey, the North Dakota Area Office surveyors Mr. Billman, Mr. Todd Potter and Mr. Jacob Frein used For the 2021 topographical survey, the North Dakota Area Office surveyors Mr. Billman, Mr. Todd Potter and Mr. Jacob Frein used the state plane coordinates established on control point No. 101. The three surveyors used a combination of four Trimble R8 and R10 GNSS receivers to collect real-time-kinematic (RTK) survey data. They began a GPS/RTK survey on April 15, 2021 and completed it on June 1, 2021. Mr. Billman post-processed RTK observations with Trimble Business Center software version 5.10. 5. Missouri Basin Region employee Mr. Ron Robertson rented a Leica MS60 MultiStation and a Leica P40 ScanStation high-definition Missouri Basin Region employee Mr. Ron Robertson rented a Leica MS60 MultiStation and a Leica P40 ScanStation high-definition scanner to set temporary survey control and capture 0.5-ft. contour-interval topographical data on the upstream and downstream faces of Heart Butte Dam. This part of the survey began on April 18, 2021 and was completed on April 24, 2021. Mr. Robertson checked primary control points 101 and 104 with the Leica MS60. The raw data from the Leica P40 was post-processed with Leica Cyclone software. 6. Using a combination of RTK and high-definition scanning, surveyors captured Water Edge (WE) topographical measurements along Using a combination of RTK and high-definition scanning, surveyors captured Water Edge (WE) topographical measurements along edge of Lake Tschida. The HDS captured the captured the water's edge on April 23, 2021. The lake forebay average elevation (FB) on April 23, 2021 was 2,061.02-feet. FB elevations for Lake Tschida (Station LTR) may be acquired from USBR's Hydromet Data System.

AutoCAD SHX Text Utility pole

AutoCAD SHX Text Guy wire & anchor

The average spillway crest elevation based on this survey is 2,064.60 feet.

N41393.37 E639520.53 El.2121.542

BM VERT1

N43173.14

E639310.81 El.2167.57

REF MARK

N AXIS OF DAM

N41054.19

E639420.84 El.2126.89

REF MARK

S AXIS 0+00

N43081.05

E639174.44 El.2169.85

BM VERT2

N41445.57

E639518.37 El.2119.78

BM REF1

N41049.05

E639320.95 El.2126.40

BM 100

N42147.83 E640549.40 El.2026.20

BM HB-S3

N41383.40 E639833.64 El.2130.56

NO. 5 REBAR W/ YPC

N42892.47

E639576.33 El.2128.55

NO. 5 REBAR W/ YPC

N41381.47

E639143.98 El.2118.69

REF MARK

N41496.13

E639200.44 El.2095.37

REF MARK

N42024.13 E639751.43 El.2027.97

BM 380.5RT

N. 44,000

Haul route from Borrow area

N41633.17

E639659.53 El.2025.00

BM USBR

N. 44,000

N. 41,500

Borrow area, stockpile and waste area

Stockpile, staging, and Contractor use area, see note 4

Main access road

TP-18-03

TP-18-02TP-18-01

TP-23-11

TP-23-12

TP-23-13

TP-23-14

TP-23-15

Stockpile, staging, and Contractor use areas, see note 4

Existing trees to be protected (typ)

Stockpile, staging, and Contractor use area, see note 4

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

F D

M O

CONTRACTOR USE AND

BORROW AREAS

PLAN

DENVER, CO

203-D-60004

2024-04-19

1Au to

R el

. 2

_C O

R-

W .D

W G

0, 4:

M S

0 500'250'

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

State Highway

Heart Butte Dam

PLAN

NOTES

1. Contour interval at 10 feet.

2. Property and easement boundaries are approximate and shown for reference.

3. Survey control points and benchmarks are shown for reference. For additional information, see sheet 203-600-60003.

4. Approximate location of contractor use area and stockpile area, as approved by COR.

Borrow, stockpile, or waste area

Stockpile, staging, or Contractor use area

Survey control point

Benchmark

Property and Easement Boundaries

U.S. Government

N D

H w y

U .S

. G ov er nm en t

N D

H w y

U .S

G ov er nm en t

U.S. Government Swift, Virgil & Margaret Skjoldal, David & Tina

Skjoldal, David & Tina

U.S. Government

Road - paved

Road - gravel/dirt

Borrow area test pit

AutoCAD SHX Text Heart River

AutoCAD SHX Text Lake Tschida

LEGEND

5+00 6+00

7+00 8+00

9+00

1.5:1

Tr an si tio n sl op e

4.0:1

4.0:1 H or iz on ta l

4.0:1

Tr an si tio n sl op e

8.0'

10+00

11+00

12+00

13+00

14+00

14+49.50

83.0'

10.0' 64.3'

45°

27.1'

5.0'

15.0'

1.5:1

Tr an si tio n sl op e2.

62.7'

10.0'

Tr an si tio n sl op e

5.0'

10.0'

12+00

13+00

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

F D

M O

EXCAVATION

PLAN

DENVER, CO

203-D-60008

2024-01-17

1Au to

R el

. 2

D W

7, 9:

M S

ND Highway 49

0 60'30'

PLAN

A 60009

0 20' 40'10'

PLAN

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

Exposed existing conduit

El. 2000

NOTES

1. Buried utilities not shown, see drawing 203-D-60003.

2. All dimensions and elevations to be verified in the field.

3. Existing toe drain location is approximate and shown for reference.

4. Existing toe drain daylights into excavation at approximately El. 2012 near the location shown.

Remove toe drain segment within excavation area and connect existing pipe to drainage system as shown on sheet 203-D-60016.

El. 2010

Hydraulic piezometer vault

LEGEND

Existing Conduit

Jet Grout Cutoff Wall

Filter Sand

Heart River

Roadway

Existing Toe Drain

El. 1995

1.0:1

El. 2010

El. 2025

Vertical filter trench excavation limits

B 60010

C 60010

El. 2000

El. 2002

D 60011

E 60011

El. 2004

Toe drain (note 3)

Approximate location where existing toe drain daylights to excavation (note 4)

Exposed existing conduit

Exposed jet grout cutoff wall

Hydraulic piezometer vault

El. 2025

Heart River

O N

STATION

ALIGNMENT - HBD SPILLWAY AND OUTLET WORKS PROFILE

9+50 10+00 11+00 12+00 13+00

Top of headwall Sta. 12+49.50 El. 2024.74

Invert Sta. 12+49.50 El. 2002.74

Existing ground

Excavation surface

1.5:1Existing conduit, cut off collars not shown

Sta. 12+47.50 El. 2020.00

Sta. 11+87.80 El. 2020.00

Spillway chute

Zone 1

Zone 2

Tb (sandstone)

Tb (shale)

El. 2067.8

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

F D

M O

EXCAVATION

PROFILE

DENVER, CO

203-D-60009

2024-01-17

1Au to

R el

. 2

D W

, 2

M S

0 20' 40'10'

PROFILE

60008

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

O N

STATION

0+00 1+00 2+00 2+70

El. 2066.9

El. 2000.0

El. 1977.0

El. 2000.0

El. 2010.0

Existing ground

Excavation surface

1.5:1

Vertical filter trench excavation surface, excavation shoring not shown

2.5:1

14.1'

Zone 2

Qal Qal

Fill

Tb (sandstone)

Tb (shale)

Tb (sandstone)

El. 2010.0

15.0' 1.5:1

O N

STATION

0+00 1+00 1+50

Spillway chute wall El. 2017.0

El. 1977.0

El. 2000.0

El. 2031.8

Existing ground

Excavation surface 1.5:1

Vertical filter trench excavation surface, excavation shoring not shown

10.0'

Zone 2

Qal

Tb (shale)

Tb (sandstone)

Qal

Tb (sandstone)

El. 2001.0 9.0'

3.0' thick concrete footing

1.5:1

15.0'

El. 2010.0

2.5:1

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

F D

M O

EXCAVATION

SECTIONS (1 OF 2)

DENVER, CO

203-D-60010

2024-01-17

1Au to

R el

. 2

D W

, 2

M S

0 10' 20'

SECTION

60008

0 10' 20'

SECTION

60008

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

NOTES

1. Spillway chute wall and footing dimensions and elevations approximate.

O N

STATION

SECTION F PROFILE

0+00 1+00 2+00 2+75

El. 2022.1

El. 2004.0 El. 2002.0

Excavation surface 4:1

1.2%

Tb (sandstone)

Qal

8.0' El. 1995.0

1:1

4:1

El. 2010.0

15.0'

O N

STATION

0+00 1+00 2+00 2+70

Excavation surface 4:1

El. 2022.0

El. 2003.5 El. 2003.5

El. 2010.0

4:1

Spillway chute wall El. 2017.0

Tb (sandstone)

Qal Fill

El. 1988.1

3.0' thick concrete footing

4.5'

4:1 El. 2010.0

15.0'

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

F D

M O

EXCAVATION

SECTIONS (2 OF 2)

DENVER, CO

203-D-60011

2024-01-17

1Au to

R el

. 2

D W

, 2

M S

0 10' 20'

SECTION

60008

0 10' 20'

SECTION

60008

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

NOTES

1. Spillway chute wall and footing dimensions and

E. 639,500

E. 639,900

20.0'

4.0:1

10+00

11+00

12+00

13+00

14+00

14+49.50

1.0%

2.3:1

2.5:1

2.2:1 5.

23.0'

104°

13+00

135°

5.0' 20.0'

10.0'

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

F D

M O

FINISHED SEEPAGE BERM

GENERAL

PLAN

DENVER, CO

203-D-60012

2024-01-17

1Au to

R el

. 2

D .D

W G

7, 9:

M S

0 60'30'

PLAN

A 60013

B 60013

MSE wall, begin slope down to El. 2010.0

(5.0:1)

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

D 60014

C 60014

El. 2010.0

℄ Access road, El. 2010.0

E 60015

El. 2035.0

El. 2033.5

LEGEND

MSE Wall

Wire Fence

Heart River

Roadway

Hydraulic piezometer vault

F 60015

NOTES

1. Inspection wells and drain pipes not shown (see

203-D-60016 and 203-D-600##).

El. 2035.0

MSE wall, El. 2036.0

0 20' 40'10'

PLAN

El. 2010.0

MSE wall, begin slope down to El. 2010.0 (5.0:1)El. 2033.5

El. 2016.0

El. 2024.0

O N

STATION

0+00 1+00 2+00 3+00 4+00 4+30

3.0' 20.0'

3.0'

1.5'

El. 2035.0 El. 2033.5El. 2031.0

Access road, El. 2010.0

Limit of excavation

Filter sand layer

Compacted backfill

Riprap

Riprap bedding

12-inch dia. perforated HDPE drain pipe, see drawing 203-D-60016

0.5' thick gravel surfacing

8.0' El. 1995.0

1.0%

5.0:1

15.0' El. 2010.0

Filter sand layer

11:1

Tb (sandstone)

Qal Qal

O N

STATION

SECTION G PROFILE

0+00 1+00 2+00 2+79.66

3.0'

1.5'

El. 2027.5

El. 2012.6 (varies)

El. 2027.5

MSE wall, El. 2028.5 (varies)

Spillway chute wall El. 2017.0

El. 2010.0

Limit of excavation

Filter sand layer

Compacted backfill

Riprap Riprap bedding

12-inch dia. perforated HDPE drain pipe, see drawing 203-D-60016

3.0' thick concrete footing

4.5'

El. 1988.1

6.0'

15.0'El. 2010.0

Tb (sandstone)

Qal Qal

Tb (shale)

Fill

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

F D

M O

FINISHED SEEPAGE BERM

GENERAL

SECTIONS (1 OF 3)

DENVER, CO

203-D-60013

2024-01-17

1Au to

R el

. 2

D .D

W G

7, 0:

M S

0 20' 40'10'

SECTION

60012

0 20' 40'10'

SECTION

60012

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

LEGEND

Filter Sand

Compacted Backfill

Riprap

Riprap bedding

MSE Wall

NOTES

1. Spillway chute wall and footing dimensions and

2. MSE wall soil reinforcement not shown.

O N

STATION

0+00 1+00 2+00 2+70

4.0'

5.0'

1.5'

3.0'

El. 2066.9

El. 2034.5

MSE wall, El. 2036.0

El. 2010.5

El. 1977.0

El. 2010.0

1.0%

Limit of excavation

Filter sand

Compacted backfill

Drain gravel

1.5:1

3.0'

15.0'

El. 2040.0

El. 2035.0

2.0' min

2.5:1

Tb (sandstone)

Tb (shale)

Fill

Zone 2

Qal

Tb (sandstone)

Tb (shale)

2.0:1

9.0:1

2.5:1

O N

STATION

0+00 1+00 1+55

4.0'

5.0'

1.5'

3.0'

El. 2035.0 El. 2034.2

MSE wall, El. 2036.0

Spillway chute wall, El. 2017.0

El. 2031.0

El. 2010.5

El. 1977.0

El. 2010.0 Limit of excavation

Filter sand

Compacted backfill

Drain gravel

12-inch dia. perforated HDPE drain pipe

1.5:1

Horizontal

El. 2001.0

3.0' thick concrete footing

9.0'

1.5:1

15.0'

3.0'

Tb (sandstone)

Tb (shale)

Qal

Zone 2

2.5:1

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

F D

M O

FINISHED SEEPAGE BERM

GENERAL

SECTIONS (2 OF 3)

DENVER, CO

203-D-60014

2024-01-17

1Au to

R el

. 2

D .D

W G

, 2

M S

0 10' 20'

SECTION

60012

0 10' 20'

SECTION

60012

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

LEGEND

Filter Sand

Drain Gravel

Compacted Backfill

MSE Wall

NOTES

1. Spillway chute wall and footing dimensions and

2. MSE wall soil reinforcement not shown.

O N

STATION

0+00 0+50

Spillway chute wall, El. 2017.0

MSE wall, El. 2036.0

12-inch dia. perforated HDPE drain pipe (El. 2005.5)

El. 2034.0

El. 2010.5

4.0'

5.0' 3.0'

1.5'

Limit of excavation

Filter sand

Compacted backfill

Drain gravel

3.0' thick concrete footing

9.0'El. 2001.0

Tb (sandstone)

O N

STATION

0+00 1+00 1+60

MSE wall, El. 2036.0El. 2034.5

El. 2022.0

1.0%

Limit of excavation

12-inch dia. perforated HDPE drain pipe

Sand filter and gravel drain envelope, see drawing 203-D-60021

Jet grout cutoff wall

El. 1977.0

Compacted backfill

El. 2035.0

El. 2032.0

1.5:1

El. 2067.8

2.5:1

Tb (shale)

Existing conduit (beyond)

Tb (sandstone)

Zone 2

1.9:1

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

F D

M O

FINISHED SEEPAGE BERM

GENERAL

SECTIONS (3 OF 3)

DENVER, CO

203-D-60015

2024-01-17

1Au to

R el

. 2

D .D

W G

, 2

M S

0 5' 10'

SECTION

60012

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

LEGEND

Filter Sand

Drain Gravel

Compacted Backfill

MSE Wall

Jet Grout Cutoff Wall

NOTES

1. Spillway chute wall and footing dimensions and elevations approximate.

2. MSE wall soil reinforcement not shown.

SECTION

60012

F 0 10' 20'

2010 20

E. 639,500

E. 639,900

4.0:1

4.0:1 4.

1.5:1

38.0'

41.2'

38.0'

41.2'

38.0'

35.0'

12-inch dia. perforated HDPE drain pipe (pipe invert El. 2010.0), see Note 1.

Add pipe clean out to end of pipe.

12-inch dia. perforated HDPE drain pipe (pipe invert El. 2012.0), see Note 1.

Add pipe clean out to end of pipe.

Pipe invert El. 2005.0

12-inch dia. perforated HDPE drain pipe (pipe invert El. 2005.5).

Add pipe clean out to end of pipe.

12-inch dia. perforated HDPE drain pipe (pipe invert El. 2010.0), see Note 1.

Add pipe clean out to end of pipe.

Pipe invert El. 2005.0

Pipe invert El. 2003.0

4.0:1

2020 20 30 2040

Tr an si tio n sl op e

H or iz on ta l

Pipe invert El. 2007.0

Connect 12-inch dia. solid HDPE pipe to existing 12-inch concrete toe drain outfall pipe (El. 2012.0)

Existing 12-inch concrete open joint toe drain

10+00

11+00

12+00

13+00

14+00

14+49.50

22.5° pipe bend

10.0'

Fl ow

Flow

45°

Pipe tee

12-inch dia. perforated HDPE drain pipe

Compacted backfill

Filter sand

1:1

1:1 1:

El. varies, see drawing 203-D-60008

Excavation surface

2.0'

5.5'

3.0'3.0'

1.5'

12-inch dia. perforated HDPE drain pipe

1.5' 1.5'

1.0'

Drain gravel

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

F D

M O

DRAIN PIPE SYSTEM

PLAN AND DETAILS

DENVER, CO

203-D-60016

2024-01-19

1Au to

R el

. 2

M .D

W G

7, 0:

M S

0 60'30'

PLAN

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

NOTES

1. Drain pipe invert elevation to follow excavation surface plus 1.5-feet, see drawing 203-D-60008. For typical drain pipe section, see Detail 1.

DETAIL - TYPICAL DRAIN PIPE SECTION

0 10'5'

DETAIL - TYPICAL PIPE CONNECTION

Drain pipe not shown, (see 203-D-60020)

El. 2010

1.0:1

El. 1995

El. 2025

Hydraulic piezometer vault

0 4'2'

El. 2000

El. 2002

El. 2004

Exposed existing conduit

Exposed jet grout cutoff wall

El. 2010

Vertical filter trench excavation limits

LEGEND

Existing Conduit

Jet Grout

Filter Sand

Drain Gravel

Compacted Backfill

Heart River

Roadway

Wire Fence

Drain Pipe

Drain Pipe (Existing)

20.0'

5.0'

E. 639,500 N

E. 639,900

6.0'

8.0'

10.0'

1.5:1

1.5 :1

14+49.50

10+00

11+00

12+00

13+00

14+00

5.0'

30.0'

5.0'

12+00

13+00

5.0'

47.2'

5.0'

42.0'

5.0'

4.5'

7.0' A

60017 A

60017

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

F D

M O

CUTOFF WALL AND

SPILLWAY CHUTE

EXCAVATION

PLAN

DENVER, CO

203-D-60017

2024-01-19

1Au to

R el

. 2

O N.

D W

8, 8:

M S

0 60'30'

PLAN

Jet grout block beneath existing concrete conduit

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io nJet grout cutoff wall

Jet grout cutoff wall

D 60019

B 60017

Vertical filter trench excavation limits

Hydraulic piezometer vault

LEGEND

Jet Grout Cutoff Wall

Jet Grout Block

Filter Sand

Roadway

Wire Fence

0 10' 20'

PLAN

Jet grout block beneath existing concrete conduit

Jet grout cutoff wall

A 60017

B 60017

A 60017

B 60017

Steel H-Pile (typ)

NOTES

1. Final plan geometry of jet grout to be determined.

C 60019

Conduit joint segment

Limits of conduit repair (hydrodemolition)

O N

STATION

SECTION J PROFILE

0+00 0+85

Excavation surface

Dental concrete

CLSM, to be removed after jet grouting is completed

30.0'

Filter sand

Jet grout block beneath existing conduit

Jet grout cutoff wall

Existing ground surface

Existing exterior concrete conduit

Compacted backfill

Finished grade

Tb (sandstone)

Tb (shale)

5.0'5.0'

El. 2000.0

El. 1977.0

El. 2010.0

El. 2018.0

El. 2022.0

El. 2032.0

3.0'

Tb (sandstone)

Tb (shale)

O N

STATION

SECTION I PROFILE

0+00 0+90.01

Excavation surface

Existing ground surface

Jet grout cutoff wall

30.0'

El. 1977.0 El. 1977.0

Dental concrete

El. 2025.0

20.0'

5.0'

3.0'

El. 2010.0

Drain gravel

Filter sand

Jet grout cutoff wall

El. 2018.0

El. 2022.0 El. 2024.0

Existing exterior concrete conduit

Finished grade

Compacted backfill

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

F D

M O

CUTOFF WALL AND

SPILLWAY CHUTE

EXCAVATION

SECTIONS (1 OF 2)

DENVER, CO

203-D-60018

2024-01-19

1Au to

R el

. 2

O N.

D W

7, 5:

M S

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

0 10' 20'

SECTION

60017

0 10' 20'

SECTION

60017

LEGEND

Jet Grout Cutoff Wall

Jet Grout Block

Filter Sand

Dental Concrete

Compacted Backfill

NOTES

1. MSE wall soil reinforcement not shown.

O N

STATION

0+00 1+00 1+65.01

Existing ground surface

El. 1983.5

El. 1990.01.5:1

El. 2009.9

Jet grout cutoff wall, El. 2020.0

El. 1983.5

El. 1977.0

Excavation surface

1.5:1

Steel H-Pile

15.0'

6.0' Excavation surface

Tb (sandstone)

Tb (shale) 44.6'

O N

STATION

ALIGNMENT - HBD SPILLWAY AND OUTLET WORKS PROFILE

10+50 11+00 12+00 13+00

Excavation surface

Existing conduit, cut off collars not shown

Spillway chute

Zone 1

Zone 2

Tb (sandstone)

Tb (shale)

1.5:1

2.25:1

Existing ground

El. 2034.5 El. 2035.0

El. 2024.0 El. 2022.0

El. 2040.0

Compacted backfill

Filter sand

MSE wall, El. 2036.0

Limit of jet grout cutoff walls (projected and beyond) Jet grout block beneath existing conduit

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

F D

M O

CUTOFF WALL AND

SPILLWAY CHUTE

EXCAVATION

SECTIONS (2 OF 2)

DENVER, CO

203-D-60019

2024-01-19

1Au to

R el

. 2

O N.

D W

8, 4:

M S

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

0 10' 20'

SECTION

60017

0 20' 40'10'

SECTION

60017

LEGEND

Jet Grout Cutoff Wall

Jet Grout Block

Filter Sand

Compacted Backfill

MSE Wall

NOTES

1. MSE wall soil reinforcement not shown.

20.0'

E. 639,500

E. 639,900

5.0'

8.0'

14+49.50

10+00

11+00

12+00

13+00

14+00

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

F D

M O

FINISHED CUTOFF WALL

AND SPILLWAY CHUTE

PLAN

DENVER, CO

203-D-60020

2024-01-19

1Au to

R el

. 2

.D W

8, 8:

M S

0 60'30'

PLAN

Jet grout block beneath existing concrete conduit

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

A 60021

B 60021

Jet grout cutoff wall

12-inch dia. perforated HDPE drain pipe, see drawing 203-D-60021

B 60021

C 60021

Vertical filter trench excavation limits

Hydraulic piezometer vault

LEGEND

Jet Grout Cutoff Wall

Jet Grout Block

Filter Sand

Roadway

Wire Fence

Steel H-Pile (typ)

Jet grout cutoff wall

12-inch dia. solid HDPE drain pipe, see

O N

STATION

0+00 0+65

Spillway chute wall, El. 2017.0

Jet grout cutoff wall, El. 2020.0

El. 1977.0

5.0'

Varies

13.0'

3.0' thick concrete footing

El. 1990.0

O N

STATION

0+00 1+00 1+50

El. 1983.5

El. 1990.0

El. 2010.0

Jet grout cutoff wall, El. 2020.0

El. 1983.5

El. 1977.0

Excavation surface

Riprap

Riprap bedding

Filter sand

Riprap

Filter sand

1.5:1

Riprap bedding

3.0' min.

1.5'

2.0'

3.0' min.

1.5:1 15.0'

2.0'

1.5'

Steel H-Pile

Existing ground surface

Excavation surface

Filter sand Drain gravel

Compacted backfill

12-inch dia. perforated HDPE drain pipe

Jet grout cutoff wall, El. 2020

1.0' min.

1.0'

1.0' 1.0'

Finished ground, see Note 1

O N

STATION

0+00 1+00 1+20

El. 2017.5

10.0'

Excavation surface Riprap

Filter sand 1.5:1

1.5:1

3.0'

2.0'

1.5'

1.5:1

Riprap bedding

Existing ground surface

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

F D

M O

FINISHED CUTOFF WALL

AND SPILLWAY CHUTE

SECTIONS AND DETAIL

DENVER, CO

203-D-60021

2024-01-19

1Au to

R el

. 2

.D W

7, 5:

M S

0 10' 20'

SECTION

60020

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

0 10' 20'

SECTION

60020

0 2' 4'

DETAIL

0 10' 20'

SECTION

60020

NOTES

1. Backfill to match existing ground surface.

2. Spillway chute wall and footing dimensions and elevations approximate.

LEGEND

Filter Sand

Compacted Backfill

Drain Gravel

Riprap Bedding

Riprap

Jet Grout Cutoff Wall

13+00

14+00

14+49.50

10.0%

2.0:1

1.5:1

2.0:1

1.5:1

10.0%

2.0:1

1.5:1

2.0:1

1.5:1

15.0'

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

F D

M O

COFFERDAM

PLAN

DENVER, CO

203-D-60022

2024-01-19

1Au to

R el

. 2

_C O

.D W

8, 9:

M S

0 60'30'

PLAN

A 60023

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

NOTES

1. Buried utilities not shown, see drawing 203-D-60003.

2. Cofferdam to be contractor designed. Information on this sheet is concept only.

3. Contractor will be required to provide some release capacity through the cofferdam (i.e., pipe with flange).

LEGEND

Heart River

El. 2008

0 20' 40'10'

PLAN

El. 2008

A 60023

O N

STATION

SECTION G PROFILE

0+00 1+00

Approx.

existing ground

2.0:1

El. 2008.0

1.5 :1

3.0'

Geomembrane

0.5' thick gravel surfacing

Compacted backfill

15.0'

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

F D

M O

COFFERDAM

SECTION

DENVER, CO

203-D-60023

2024-01-19

1Au to

R el

. 2

_C O

.D W

8, 9:

M S

0 10' 20'

SECTION

60022

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

NOTES

1. Cofferdam to be contractor designed. Information on this sheet is concept only.

2. Contractor will be required to provide some release capacity through the cofferdam (i.e., pipe with flange).

70 2080

E. 639,500

E. 639,9002020

OW-6

OW-5

OW-3

OW-7

OW-4

OW-8

DW-13 DW-20

DW-30

DW-40

DW-50

DW-60

DW-12

DW-80

DW-90

DW-15

1.5:1

4.0:1

OW-2

DW-70

DW-01

DW-05

OW-1

DW-11

OW-5

OW-3

OW-4

DW-30

DW-50

DW-60

DW-12

1.5:1

Tr an si tio n sl op e

DW-70

DW-01

DW-05 12+00

13+00

OW-1

DW-11

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

Nicole Bogenschuetz

Kevin Cashman

Ted Howard

Justin Hall

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

L D

DEWATERING

PLAN

DENVER, CO

203-D-60030

2024-01-30

1 OF 4Au to

R el

. 2

_F O

R-

W G

8, 0:

M S

ND Highway 49

0 60'30'

PLAN

Vertical filter trench excavation limits

B T0102

C T0102

Dewatering platform, El. 2000

0 20' 40'10'

PLAN Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

El. 2000

Jet grout block

Dewatering bench, El. 2010

NOTES

1. All slopes are Horizontal:Vertical.

2. All dimensions are in feet, unless otherwise shown.

3. For survey information see (60003)

4. Dewatering and observation wells are approximate and shall be relocated as approved by COR.

5. Refer to specifications for installation requirements of dewatering and observation wells.

6. Approved, Contractor-designed unwatering system not shown.

7. Access to existing observation wells and piezometers shall be made available, as approved by COR.

8. Phase 1 includes dewatering to support the installation of the jet grout block below the conduit. Phase 2 includes dewatering to support the installation of the toe and blanket drains. Five wells within Phase 1 will be operated as part of Phase 2.

9. Dewatering bench not shown.

10. This plan is for clarity of the dewatering system and should not be used to construct any other aspect of the project.

LEGEND

Jet Grout Cutoff Wall

Jet Grout Block

Vertical Filter Trench

Heart River

Roadway

Observation Well

Dewatering Well - Phase 2

Dewatering Well - Phase 1

Spillway chute excavation not shown, see (60017)

Limit of excavation, see (60008)

Dewatering bench, El. 2010

Limit of excavation, see (60008)

Cofferdam not shown, see (60022)

Existing conduit

Jet grout cutoff wall

Existing stilling basin

Filter blanket key not shown, see (60008)

AutoCAD SHX Text Heart River

REFERENCE DRAWINGS DEWATERING SECTIONS AND DETAILS _ _ _ _ _ _ _ _ _ _ _203-D-60031 DEWATERING DETAILS AND TABLE _ _ _ _ _ _ _ _ _ _ _ _203-D-60032 DEWATERING TABLE _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _203-D-60033 EXISTING CONDITIONS PLAN _ _ _ _ _ _ _ _ _ _ _ _ _ _203-D-60003 EXCAVATION PLAN _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 203-D-60008 CUTOFF WALL AND SPILLWAY CHUTE EXCAVATION PLAN _ _ _ _203-D-60017 COFFERDAM PLAN _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 203-D-60022

O N

STATION

0+00 1+00 2+00 2+30

El. 2000.0

El. 1977.0

Existing ground

Excavation surface

Vertical filter trench excavation surface, excavation shoring not shown

2.5:1

14.1'

Zone 2

Qal Qal

Fill

Tb (sandstone)

Tb (shale)

Tb (sandstone)

2.5:1

2.5:1 Dewatering bench, El. 2010 Deep well, see Detail 1 (60032) projected 12 feet

Deep wellDeep well

El. 2000

El. 2010

O N

STATION

0+00 1+00 1+10

Existing ground

2.5:1

Vertical filter trench excavation surface, excavation shoring not shown

10.0'

Zone 2

Qal

Tb (shale)

Tb (sandstone)

Qal

Tb (sandstone)

2.5:1

Dewatering bench, El. 2010 Observation well, see Detail 2 (60032), projected 23 feet

Deep well, projected 9 feet

Deep well, projected 4 feet Deep well, projected 4 feet

Excavation surface

Spillway chute wall El. 2017

El. 2000

El. 1977

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

Nicole Bogenschuetz

Kevin Cashman

Ted Howard

Justin Hall

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

L D

DEWATERING

SECTIONS

DENVER, CO

203-D-60031

2024-01-30

2 OF 4Au to

R el

. 2

.D W

L 5, 0:

0 10' 20'

SECTION

60030

0 10' 20'

SECTION

60030

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

NOTES

1. For survey information, see (60003).

2. Cross section is for illustrative purposes only. Do not use for construction of any other feature beyond the dewatering system.

3. All wells shown are projected. Some wells were not projected for clarity.

4. Depths estimated, conditions may vary in the field. Changes acceptable as approved by COR.

5. Drill depths target ten feet into shale bedrock.

REFERENCE DRAWINGS DEWATERING PLAN _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 203-D-60030 DEWATERING DETAILS AND TABLE _ _ _ _ _ _ _ _ _ _ _ _203-D-60032 DEWATERING TABLE _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _203-D-60033 EXISTING CONDITIONS PLAN _ _ _ _ _ _ _ _ _ _ _ _ _ _203-D-60003 EXCAVATION PLAN _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 203-D-60008 COFFERDAM PLAN _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 203-D-60022

' m in

Backfill with filter pack

Min. 2" annular space

6" Diameter

1.0' min.

10" min

Pipe cap

3.0' min

Bentonite pellets Depth to vary

Ground surface

V ar ie s

2.0' min.

V ar ie s

0' m in

Ground surface

Depth to vary

Bentonite pellets

Backfill with filter pack

Min. 2" annular space

2" diameter

Pipe cap

' m in

1.5' min

1.0' min.

6" min

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

Nicole Bogenschuetz

Kevin Cashman

Ted Howard

Justin Hall

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

L D

DEWATERING

DETAILS AND TABLES

DENVER, CO

203-D-60032

2024-01-30

3 OF 4Au to

R el

. 2

.D W

L 5, 0:

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

DETAIL - DEEP WELL

1 NOT TO SCALE

DETAIL - OBSERVTATION WELL

2 NOT TO SCALE

NOTES

1. For survey information, see (60003).

2. Depths estimated, conditions may vary in the field. Changes acceptable as approved by COR.

3. Drill depths target ten feet into shale bedrock.

4. Phase 1 includes dewatering to support the installation of the jet grout block below the conduit. Phase 2 includes dewatering to support the installation of the toe and blanket drains. Five wells within Phase 1 will be operated as part of Phase 2.

PHASE 1, DEEP WELL LOCATIONS

Well ID Northing Easting Ground El.

(ft) Hole Diameter (in) Casing Diameter (in) Top El. Slotted Pipe (ft) Bottom El. Slotted Pipe (ft) Top El. Filter Pack (ft) Bottom El. of Drill Hole (ft) Filter Pack (US Sieve Size) Slot Size (in) Pump Capacity (gpm)

DW-01 41653 639643 2026.1 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-02 41653 639636 2026.6 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-03 41653 639628 2027.7 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-04 41653 639618 2030.1 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-05 41638 639613 2032.8 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-06 41628 639613 2032.3 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-07 41618 639613 2032.7 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-08 41613 639628 2029.1 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-09 41613 639638 2027.5 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-10 41613 639648 2026.2 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-11 41613 639660 2023.7 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-12 41648 639663 2022.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

OBSERVATION WELL LOCATIONS

Well ID Northing Easting Ground El.

(ft) Hole Diameter (in) Casing Diameter (in) Top El. Slotted Pipe (ft) Bottom El. Slotted Pipe (ft) Top El. Filter Pack (ft) Bottom El. of Drill Hole (ft) Filter Pack (US Sieve Size) Slot Size (in)

OW-1 41,610 639,632 2028.7 6 2 1986.0 1976.0 1988.0 1975.0 16/30 0.02

OW-2 41,770 639,668 2020.0 6 2 1986.0 1976.0 1988.0 1975.0 16/30 0.02

OW-3 41,653 639,661 2023.0 6 2 1986.0 1976.0 1988.0 1975.0 16/30 0.02

OW-4 41,701 639,677 2020.4 6 2 1986.0 1976.0 1988.0 1975.0 16/30 0.02

OW-5 41,671 639,735 2014.6 6 2 1986.0 1976.0 1988.0 1975.0 16/30 0.02

OW-6 41,773 639,739 2008.6 6 2 1986.0 1976.0 1988.0 1975.0 16/30 0.02

OW-7 41,770 639,868 2001.7 6 2 1986.0 1976.0 1988.0 1975.0 16/30 0.02

OW-8 41,576 639,813 2013.0 6 2 1986.0 1976.0 1988.0 1975.0 16/30 0.02

PHASE 2, DEEP WELL LOCATIONS

Well ID Northing Easting Ground El.

DW-13 41830 639934 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-14 41809 639927 2005.5 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-15 41789 639926 2004.6 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-16 41769 639920 2000.8 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-17 41749 639922 2001.1 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-18 41729 639930 2006.1 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-19 41708 639931 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-20 41692 639916 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-21 41688 639895 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-22 41689 639876 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-23 41690 639856 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-24 41691 639836 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-25 41692 639816 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-26 41693 639795 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-27 41693 639775 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-28 41694 639756 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

REFERENCE DRAWINGS DEWATERING PLAN _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 203-D-60030 DEWATERING SECTION _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 203-D-60031 DEWATERING TABLE _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _203-D-60033 EXISTING CONDITIONS PLAN_ _ _ _ _ _ _ _ _ _ _ _ _ _ 203-D-60003

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

PEER REVIEWER -

Nicole Bogenschuetz

Kevin Cashman

Ted Howard

Justin Hall

GEOTECHNICAL ENGINEER

T H

S A

SHEET

B Y

D T

N U.

T O

O R

-S

O G

T D

L D

DEWATERING

TABLES

DENVER, CO

203-D-60033

2024-01-30

4 OF 4Au to

R el

. 2

.D W

L 5, 0:

Fo r

In te rn al

U se

O nl y D ra ft

No t F or D is tr ib ut io n

NOTES

1. For survey information, see (60003).

2. Depths estimated, conditions may vary in the field. Changes acceptable as approved by COR.

3. Drill depths target ten feet into shale bedrock.

PHASE 2, DEEP WELL LOCATIONS, CONTINUED

Well ID Northing Easting Ground El.

DW-29 41692 639738 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-30 41710 639720 2002.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-31 41726 639703 2014.1 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-32 41740 639715 2001.3 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-33 41766 639707 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-34 41786 639707 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-35 41806 639707 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-36 41826 639707 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-37 41844 639714 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-38 41855 639735 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-39 41855 639755 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-40 41856 639775 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-41 41857 639795 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-42 41858 639815 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-43 41859 639835 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-44 41860 639855 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-45 41861 639874 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-46 41862 639894 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-47 41858 639915 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-48 41842 639931 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-49 41714 639695 2017.3 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-50 41707 639688 2018.4 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-51 41700 639681 2019.6 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-52 41693 639674 2020.9 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-53 41686 639667 2021.9 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-54 41679 639660 2023.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-55 41672 639653 2023.9 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-56 41665 639646 2025.2 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-57 41715 639702 2016.1 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-58 41659 639668 2019.7 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-59 41666 639675 2019.3 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-60 41673 639682 2018.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-61 41680 639689 2016.2 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-62 41687 639696 2015.3 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-63 41698 639704 2015.3 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-64 41708 639704 2015.5 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-65 41660 639625 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-66 41678 639627 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-67 41691 639639 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-68 41706 639653 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-69 41722 639660 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-70 41737 639671 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-71 41751 639685 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-72 41759 639695 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-73 41569 639813 2018.6 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-74 41569 639796 2000.4 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-75 41574 639777 2018.5 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-76 41581 639758 2017.2 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-77 41593 639749 2016.8 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-78 41607 639750 2014.6 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-79 41609 639762 2014.5 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-80 41609 639782 2009.4 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-81 41609 639802 2000.4 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-82 41623 639813 2000.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-83 41622 639826 1980.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-84 41607 639840 1980.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-85 41595 639852 2004.6 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-86 41583 639869 2015.1 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-87 41569 639874 2019.2 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-88 41569 639857 2019.2 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-89 41569 639837 2019.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-90 41668 639764 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-91 41658 639775 2010.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-92 41658 639795 2002.4 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-93 41650 639812 2000.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-94 41641 639820 2000.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

DW-95 41654 639835 2000.0 10 6 1987.0 1967.0 1989.0 1966.0 16/30 0.02 15

REFERENCE DRAWINGS DEWATERING PLAN _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 203-D-60030 DEWATERING SECTION _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 203-D-60031 DEWATERING DETAILS AND TABLES _ _ _ _ _ _ _ _ _ _ _ 203-D-60032 EXISTING CONDITIONS PLAN_ _ _ _ _ _ _ _ _ _ _ _ _ _ 203-D-60003

Downstream face of headwall

Upstream face of headwall

A 60036

Concrete conduit transition section

Existing concrete conduit

Jet grout cutoff walls

Jet grout cutoff walls, see Note 3

CL. Heart Butte Outlet Works Conduit

Limits of repair area 17.00' 3.20'

2.00'

STA. 12+49.50

Extents of hydrodemolition and concrete repair

Jet grout columns

STA. 12+03.80

CL. jet grout dilled holes Concrete conduit transition section

Extents of hydrodemolition and concrete repair

Existing Concrete

Extents of hydrodemolition and concrete repair

Extents of hydrodemolition and concrete repair2" Sawcut

STA. 11+95.30

STA. 12+12.30

5'-0" Vertical min. above outside drill edge

CL. Heart Butte Conduit

Temporary bracing to support conduit, required not shown, see Note 5

Drill rig…

This is the start of the file's text. The full file is on GovTribe.

File details come from the government source that posted it. Updated Jul 31, 2024.