Flowing Solutions

Portland, OR 97225

Phone (503) 297-6311

3305 SW 87th Avenue

Fax (503) 297-6053

SHEET TITLE:

DATE:

SHEET NO.

Big Eddy Marina - Maintenance Dredge Project

19609 NE Marine Drive

Portland, Oregon 97230

10-21-2016

SM

PROJECT:

RIVER/MILE:

DATUM: CRD

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COLUMBIA RIVER, MILE 117.9

REVISED 10-21-2016

COVER SHEET

SITESheet Index:1. Cover Sheet2. Tax Map3. Air Photos4. Site Survey-Work Area5. Dredge Site Plan6. Dredge Prism Section7. Site Survey Disposal Area8. Disposal Prism Sections9. Post Dredge Contours

LOCATOR MAP

VICINITY MAP

I-205

I-84 To Portland

I-84 ToHood River

DREDGE

SITE

Government Island

1

DISPOSAL

SITE

NWP-2006-856-1 1 of 9 Enclosure 1

Flowing Solutions

Portland, OR 97225

Phone (503) 297-6311

3305 SW 87th Avenue

Fax (503) 297-6053

SHEET TITLE:

DATE:

SHEET NO.

Big Eddy Marina - Maintenance Dredge Project

19609 NE Marine Drive

Portland, Oregon 97230

10-21-2016

SM

PROJECT:

RIVER/MILE:

DATUM: CRD

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COLUMBIA RIVER, MILE 117.9

REVISED 10-21-2016

TAX MAP

2

Dredge Area

State Ownership

DISPOSAL AREA TAX MAP

DREDGE AREA TAX MAP

Disposal Area

State Ownership

METRO Ownership

NWP-2006-856-1 2 of 9 Enclosure 1

Flowing Solutions

Portland, OR 97225

Phone (503) 297-6311

3305 SW 87th Avenue

Fax (503) 297-6053

SHEET TITLE:

DATE:

SHEET NO.

Big Eddy Marina - Maintenance Dredge Project

19609 NE Marine Drive

Portland, Oregon 97230

10-21-2016

SM

PROJECT:

RIVER/MILE:

DATUM: CRD

d:\fs\fsp

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wg

COLUMBIA RIVER, MILE 117.9

REVISED 10-21-2016

AIR PHOTOS

3

Dredge Prism

Disposal

Dredge Prism

PLAN VIEW SHOWING DREDGE AND DISPOSAL AREAS

PLAN VIEW SHOWING DREDGE PRISM

NWP-2006-856-1 3 of 9 Enclosure 1

00 200' 400'

0

0

0

0

-1

-3

-4

-5

-

1

-

5

-9

-

1

2

-

1

0

-10

-9

-5

-4

-1

-

1

-1

0

-

2

0

-20

-

2

0

-

2

0

-1

5

-1

0

0

-2

-1

-14

-2

0

-22

-21

-20

-20

-

2

0

-1

5

-16

-10

-5

-6

-4

-3

-

2

5

-21

-20

-

2

1

-20

-

2

0

-21

-

2

2

-23

-23

-

2

2

-5

-10

-

2

0

-20

-19

-

2

-

3

-2

-2

-5

-5

-5

-

7-

7

-6

-

5

-

8-8

-

8

-8

-5

-6

-4

-2

-1

-6

-

7

-

5

-

4

-

4

-

4

-

4

-5

-5

-

5

-3

-

4

-

3

-4

-4

-5

-

1

-5

-5

-5

-5

-

5

-4

-

4

-

4

-4

-

4

-4

-4

-4-4

-

4

-

5

-5

-5

-5

-5

-5

-6

-7

-10

-10

-10

-

4

-

4

-5

-5

-

2

-2

-2

-2

-3

-

5

-6

-5

-10

-6

-5

-6

-

6

-

4

-5

-6

-6

-6

-

3

-

1

0

-5

-

6

-9

-

1

0

-7

-6

-6

-

2

0

-

2

1

-

1

9

-

2

0

-

2

0

-

1

8

-19

-

1

9

-

1

8

-

2

0

-2

0

-2

1-

2

1-

2

1-2

1

-2

2

-21

-

2

1

-20

-2

1

-22

-21

-21

-24

-23

-23

-22

-

2

1

-21

-21

-

2

0

-

2

1

-

2

2

-2

3

-

2

2

-

2

2

-5

-6

-2

-1

-10

-15

-1

6

-5

-7

-6

-4

-3

-22

-2

0

-15

-5

-7

-6

-4

-3

-1

9

-21

-20

-

1

9

-

1

8

-10

-15

-20

-20

-

5

Flowing Solutions

Portland, OR 97225

Phone (503) 297-6311

3305 SW 87th Avenue

Fax (503) 297-6053

SHEET TITLE:

DATE:

SHEET NO.

Big Eddy Marina - Maintenance Dredge Project

19609 NE Marine Drive

Portland, Oregon 97230

10-21-2016

SM

PROJECT:

RIVER/MILE:

DATUM: CRD

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6.d

wg

COLUMBIA RIVER, MILE 117.9

REVISED 10-21-2016

SITE SURVEY-WORK AREA

4

SURVEY DATA NOVEMBER 8, 2015PERFORMED BY NW HYDRO

NOTES:1. HORIZONTAL DATUM: NORTH AMERICAN DATUM OF 1983/91, STATE PLANE COORDINATES, OREGON NORTH ZONE.

2. UNITS: INTERNATIONAL FEET

3. VERTICAL DATUM: COLUMBIA RIVER DATUM (C.R.D). SOUNDINGS ARE IN FEET AND INDICATE ELEVATIONS IN REFERENCE TO C.R.D VERTICAL DATUM..

4. CONTOUR INTERVAL: 1 FOOT.

5. ALL HORIZONTAL POSITIONING WAS PROVIDED IN REAL-TIME USING A TRIMBLE R8 RTK GPS RECEIVER.

6. SOUNDINGS WERE COLLECTED USING A KNUDSEN 320M SINGLEBEAM SONAR SYSTEM OPERATING AT 200-kHZ WITH A 4-130-DEGREE BEAM ANGLE. DATA AQUISTION AND PROCESSINGWAS` COMPLETED USING HYPACK SOFTWARE.

7. THIS BATHYMETRIC SURVEY IS REPRESENTATIVE OF THE GENERAL CONDITION OF THE RIVERBED AT THE TIME OF THE SURVEY. THE CONDITION OF THE BOTTOM MAY CHANGE AT ANYTIME AFTER THE DATE OF THIS SURVEY.

8. ALL BATHYMETRIC DATA WAS COLLECTED IN ACCORDANCE WITH THE U.S ARMY CORPS OF ENGINEERS HYDROGRAPHIC SURVEY MANUAL EM-112-02-1003 (JANUARY 2002). SURVEYCLASSIFICATION: NAVIGATION AND DREDGING SUPPORT SURVEYS, BOTTOM CLASSIFICATION OF SOFT.

9. THE IMAGE SHOWN ON THIS DRAWING WAS NOT GEOREFERENCED AND WAS ROTATED AND SCALED. THE HORIZONTAL POSITION OF THE IMAGE SHOULD NOT BE CONSIDERED SURVEYQUALITY.

DATA PRESENTED ONCRD DATUM

NWP-2006-856-1 4 of 9 Enclosure 1

00 200' 400'

0

0

0

0

-1

-3

-4

-5

-

1

-

5

-9

-

1

2

-

1

0

-10

-9

-5

-4

-1

-

1

-1

0

-

2

0

-20

-

2

0

-

2

0

-1

5

-1

0

0

-2

-1

-14

-2

0

-22

-21

-20

-20

-

2

0

-1

5

-16

-10

-5

-6

-4

-3

-

2

5

-21

-20

-

2

1

-20

-

2

0

-21

-

2

2

-23

-23

-

2

2

-5

-10

-

2

0

-20

-19

-

2

-

3

-2

-2

-5

-5

-5

-

7-

7

-6

-

5

-

8-8

-

8

-8

-5

-6

-4

-2

-1

-6

-

7

-

5

-

4

-

4

-

4

-

4

-5

-5

-

5

-3

-

4

-

3

-4

-4

-5

-

1

-5

-5

-5

-5

-

5

-4

-

4

-

4

-4

-

4

-4

-4

-4-4

-

4

-

5

-5

-5

-5

-5

-5

-6

-7

-10

-10

-10

-

4

-

4

-5

-5

-

2

-2

-2

-2

-3

-

5

-6

-5

-10

-6

-5

-6

-

6

-

4

-5

-6

-6

-6

-

3

-

1

0

-5

-

6

-9

-

1

0

-7

-6

-6

-

2

0

-

2

1

-

1

9

-

2

0

-

2

0

-

1

8

-19

-

1

9

-

1

8

-

2

0

-2

0

-2

1-

2

1-

2

1-2

1

-2

2

-21

-

2

1

-20

-2

1

-22

-21

-21

-24

-23

-23

-22

-

2

1

-21

-21

-

2

0

-

2

1

-

2

2

-2

3

-

2

2

-

2

2

-5

-6

-2

-1

-10

-15

-1

6

-5

-7

-6

-4

-3

-22

-2

0

-15

-5

-7

-6

-4

-3

-1

9

-21

-20

-

1

9

-

1

8

-5

-5

0

0

0

-7

-7

-

6

-6

-4

-4

-

3

-3

-

2

-2

-

1

-1

-5

-

5

-5

-5

-

4

-4

-

3

-3

-2

-2

-2

-1

-1

-1

Limit of Dredge Prism

Dre

dge

Pris

mDre

dge

Pris

m

These Contours ReflectMaterial Removal, NotDepth

Target Depth -7.0 CRD

-10

-15

-20

-20

-

5

DepthContour

1291.2

348.3

563.1

These Style ContoursReflect Existing Depth

0+

00

1+

00

2+

00

3+

00

4+

00

5+

00

6+

00

7+

00

8+

00

9+

00

10+

00

11+

00

12+

00

13+

00

13+

39

DR

ED

GE

P

RIS

M-2

DR

ED

GE

P

RIS

M-1

Flowing Solutions

Portland, OR 97225

Phone (503) 297-6311

3305 SW 87th Avenue

Fax (503) 297-6053

SHEET TITLE:

DATE:

SHEET NO.

Big Eddy Marina - Maintenance Dredge Project

19609 NE Marine Drive

Portland, Oregon 97230

10-21-2016

SM

PROJECT:

RIVER/MILE:

DATUM: CRD

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0-2

01

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wg

COLUMBIA RIVER, MILE 117.9

REVISED 10-21-2016

DREDGE SITE PLAN

5

NWP-2006-856-1 5 of 9 Enclosure 1

Existin

g G

ro

un

d

Pro

po

se

d -7

.0

C

RD

7 ft m

ax

3-5

ft typ

.

Elevation

Offse

t

Dre

dg

e P

rism

-1

- 1

1+

49

.3

6

-3

0

-2

0

-1

0

0

10

20

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140

150

160

170

180

190

200

210

220

230

240

0

-10

-20

-30

-40

-50

-60

-70

-80

-90

-100

-110

-120

-130

-140

-150

-160

Elevation

Offse

t

Dre

dg

e P

rism

-2

- 4

+4

3.3

4

-3

0

-2

0

-1

0

0

10

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140

150

160

170

180

190

200

0

-10

-20

-30

-40

-50

-60

-70

-80

-90

-100

-110

-120

-130

-140

-150

-160

-170

-180

-190

-200

-210

-220

-230

-240

Existin

g G

ro

un

d

Pro

po

se

d -7

.0

C

RD

Flowing Solutions

Portland, OR 97225

Phone (503) 297-6311

3305 SW 87th Avenue

Fax (503) 297-6053

SHEET TITLE:

DATE:

SHEET NO.

Big Eddy Marina - Maintenance Dredge Project

19609 NE Marine Drive

Portland, Oregon 97230

10-21-2016

SM

PROJECT:

RIVER/MILE:

DATUM: CRD

d:\fs\fsp

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wg

COLUMBIA RIVER, MILE 117.9

REVISED 10-21-2016

DREDGE PRISM SECTIONS

6

SCALE 1"=50'

NWP-2006-856-1 6 of 9 Enclosure 1

-

8

-

8

-

8

-

7

-

5

-

2

-

1

0

-

1

0

-10

-

1

0

-12

-

1

1

-

1

1

-11

-

1

1

-

1

1

-

1

2

-

1

2

-1

2

-1

2

-

1

0

-

8

-

3

-4

-5

-

6

-

1

0

-5

-

1

0

-8

-

5

MA

TC

H L

IN

E

MA

TC

H L

IN

E

Disposal Area

1749.3

Disposal Prism

7

+

0

0

8

+

0

0

9

+

0

0

1

0

+

0

0

1

1

+

0

0

1

2

+

0

0

1

3

+

0

0

1

4

+

0

0

1

5

+

0

0

1

6

+

0

0

1

7

+

0

0

1

7

+

3

8

E

N

D

: 1

7

+

3

8

.2

6

D

IS

P

O

S

A

L

S

E

C

T

IO

N

-1

Disposal Contour -9

(2 ft Above Existing)

-15

-

1

5

-

1

5

-15

-

1

5

-

1

4

-

1

5

-

1

5

-

1

5

-

1

6

-

1

7

-

1

7

-

1

7

-16

-1

5

-5

-6

-4

-

1

0

-

9

-1

0

-5

-6

-4

-3

-2

-1

3

-

1

3

-1

4

-

1

4

-1

4

-1

3

-1

3

-

1

3

-13-

1

3

-

1

3

-

1

3

-

1

4

-

1

4-1

4

-1

4

-1

4

-

1

4

-

1

3

-

1

3

-1

6

-5

-

1

5

-16

-1

4

-13

-5

-6

-5

-4

MA

TC

H L

IN

E

MA

TC

H L

IN

E

Disposal Area

320.0

Disposal Prism

2 ft Above Existing

0

+

0

0

1

+

0

0

2

+

0

0

3

+

0

0

4

+

0

0

5

+

0

0

6

+

0

0

7

+

0

0

S

T

A

R

T

: 0

+

0

0

.0

0

D

IS

P

O

S

A

L

S

E

C

T

IO

N

-2

45.563481°

-122.484921°

45.562290°

-122.485372°

45.562303°

-122.476630°

45.561209°

-122.476875°

Flowing Solutions

Portland, OR 97225

Phone (503) 297-6311

3305 SW 87th Avenue

Fax (503) 297-6053

SHEET TITLE:

DATE:

SHEET NO.

Big Eddy Marina - Maintenance Dredge Project

19609 NE Marine Drive

Portland, Oregon 97230

10-21-2016

SM

PROJECT:

RIVER/MILE:

DATUM: CRD

d:\fs\fsp

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visio

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0-2

0-2

01

6.d

wg

COLUMBIA RIVER, MILE 117.9

REVISED 10-21-2016

SITE SURVEY-DISPOSAL AREA

7

LOCATOR MAP WITH LAT/LON

ISLAND

MAINLAND

SCALE 1"=200'

DATA PRESENTED ONCRD DATUM

NWP-2006-856-1 7 of 9 Enclosure 1

Elevation

Offse

t

Disp

osa

l S

ectio

n-1

- 1

1+

46

.5

4

-3

0

-2

0

-1

0

0

10

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140

150

160

170

180

190

0

-10

-20

-30

-40

-50

-60

-70

-80

-90

-100

-110

-120

-130

-140

-150

-160

-170

-180

-190

Elevation

Offse

t

Disp

osa

l S

ectio

n-2

- 5

+4

3.7

0

-3

0

-2

0

-1

0

0

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140

150

160

170

180

0

-10

-20

-30

-40

-50

-60

-70

-80

-90

-100

-110

-120

-130

-140

-150

-160

-170

-180

-190

2 ft typ

.

Existin

g G

ro

un

d

Pro

po

se

d

2 ft typ

.

Existin

g G

ro

un

d

Pro

po

se

d

Flowing Solutions

Portland, OR 97225

Phone (503) 297-6311

3305 SW 87th Avenue

Fax (503) 297-6053

SHEET TITLE:

DATE:

SHEET NO.

Big Eddy Marina - Maintenance Dredge Project

19609 NE Marine Drive

Portland, Oregon 97230

10-21-2016

SM

PROJECT:

RIVER/MILE:

DATUM: CRD

d:\fs\fsp

ro

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ig

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dym

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a\ca

d\fs-b

ig

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dy-p

erm

it a

pp

lica

tio

n-d

sl re

visio

ns 1

0-2

0-2

01

6.d

wg

COLUMBIA RIVER, MILE 117.9

REVISED 10-21-2016

DISPOSAL PRISM SECTIONS

8

SCALE 1"=50'

NWP-2006-856-1 8 of 9 Enclosure 1

00 200' 400'

0+

00

1+

00

2+

00

3+

00

4+

00

5+

00

6+

00

7+

00

8+

00

9+

00

10+

00

11+

00

12+

00

13+

00

13+

39

DR

ED

GE

P

RIS

M-2

DR

ED

GE

P

RIS

M-1

DepthContour

Target Depth -7.0 CRD

Limit of Dredge Prism

Dre

dge

Pris

mDre

dge

Pris

m

1291.2

563.1

Flowing Solutions

Portland, OR 97225

Phone (503) 297-6311

3305 SW 87th Avenue

Fax (503) 297-6053

SHEET TITLE:

DATE:

SHEET NO.

Big Eddy Marina - Maintenance Dredge Project

19609 NE Marine Drive

Portland, Oregon 97230

10-21-2016

SM

PROJECT:

RIVER/MILE:

DATUM: CRD

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COLUMBIA RIVER, MILE 117.9

REVISED 10-21-2016

POST DREDGE SITE

9

NWP-2006-856-1 9 of 9 Enclosure 1