SW_01_SWCX_20240605_CS_E_6_3_355_MIJ.pdf

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P.I. 125+31.63

N 504,663.82

E 1,232,931.23

P.I. 132+17.96

N 505,301.31

E 1,233,185.47

Earthstar Geographics

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US Army Corps of Engineers

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VICINITY MAP

1. Sounding and elevations are in feet and refer to the plane of NOS Mean Lower Low Water (MLLW). Epoch 1983-2001. Tide correction Based on Geoid 2012A using Real Time Kinematic (RTK). Soundings taken above the datum plane are prefixed with a (+) sign.

2. Horizontal Datum: WGS-84. Projected coordinate system: Lambert Grid Projection, State Plane, Washington North Zone, 4601, Surveyed in North American Datum of 1983/2011, Plotted in North American Datum of 1983/91. Horizontal units are U.S. Survey Feet.

3. The information depicted on this map represents the results of surveys made on the date indicated and can only be considered as indicating the general conditions existing at that time.

4. The location of navigation aids and cables are provided by the U.S. Coast Guard, NOAA or the Corps of Engineers. Consult U.S. Coast Guard Light List and U.S. Coast Pilots for supplemental information.

5. Base imagery prepared from natural color four band imagery provided by the National Agriculture Imagery Program (NAIP) taken by United States Department of Agriculture (2017).

6. Every effort has been made to provide all pertinent details on the location of obstructions/utilities. The data furnished on the drawings are believed to be substantially correct. However, the exact locations may vary from that shown.

7. Placement Sites are used for dredge material placement, Beneficial Use Sites can be used for placement of dredged material when needed.

8. (Project Depth MLLW, Stations, Width): (12’, Sta. 0+00 to Sta. 125+32, 100’); (12’, Sta. 125+00 to Sta. 151+54, 150’); Turning Basin (12’, Sta. 117+00 to 132+18, 125’); (12’, Sta. 151+54 to Sta. 176+38, 100’); (12’, Sta. 176+38 to Sta. 182+04, 150’); (12’, Sta. 182+04 to Sta. 690+95, 100’); Turning Basin (12’, Sta. 470+44 to Sta. 478+94, 122’).

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LEGEND

Federal Navigation Channel

Federal Navigation Center Line

Cable Submarine

Cable Overhead

Contour Line

Placement Area

Beneficial Use Site

Access Channel

Borrow Area

Shoaling Above Project Depth

!( Shoalest Sounding** çè Wrecks

¾ Obstructions

X Y Typical Lighted Buoy

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Typical Buoy

□* Typical Daymarks

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Seattle District

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SW_01_SWCX_20240605_CS_E_6_3_355

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Ross 825 single beam echosounder 3.5 degree, 200 kHz transducer

Survey Vessel, NWS 1-14-13

Condition Survey, 05 June 2024, 2024sw002

NOTES:

The channel alignment shown on this map is Alignment 1998

The following equipment was used for this survey:

The following surveys were used to create this drawing set:

** Shoalest sounding per quarter, per each area. Areas are defined by change in width and/or depth.

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