70Z08826B0000123-Replace ATON-Appendix B.pdf

ATON Construction Columbia River

CR-Bundle 1 1 As of: 9/11/2024

Fashion Reef Lower Range Front Light (LLNR 11630) Chart 18531

Current Structure Type: Four Pile Wood Range with 15 FT of 7’ x 7’ steel tower.

Current Position: 45-35-06.421N 122-07-37.727W (WGS84)

New Structure Type: Three Pile Steel Structure, with 7’ x 7’ basket.

New Position: 45-35-05.46157N 122-07-43.81147W (NAD83). Construction shall use State Plane Coordinates Oregon North US Feet Y-703526.361; X-7785100.279). Survey required (Pre-build & Final). Range & Bearing to RR: 3000.0 FT at 077.9°. New RF 447 FT bearing 257.6° from old RF.

Water Depth: 17 FT CRD (19 FT MHW) Bottom: Sand/Mud Tidal Range: 9.65 FT (Flood Stage 16.0 FT) Height of Top Rail above CRD: 23 FT Dayboards: One 6KRB at 258° Ladder Orientation: 078°

Fashion Reef Lower Range Rear Light (LLNR 11635) Chart 18531

Current Structure Type: Four Pile Wood Range structure (MPW) with 15 FT of 7’ x 7’ tower.

Current Position: 45-35-10.673N 122-07-09.506W (WGS84).

New Structure Type: Four Pile Steel Range, with 10’ x 10’ platform at 21 FT CRD & 30 FT of 7’ x 7’ tower. :Ladder device required.

New Position: 45-35-11.69498N 122-07-02.57097W (NAD83). Construction shall use State Plane Coordinates Oregon North US Feet (SPC OR N, US Feet Y-704098.646; X-7788045.188. Survey required (Pre-build & Final). Range & Bearing to RF: 3000.0 FT at 257.9°. New RR 500 FT bearing 077.9° from old RR.

Water Depth: 8 FT CRD (10 FT MHW) Bottom: Sand/Mud Tidal Range: 9.65 FT (Flood Stage 16.0 FT) Height of Top Rail above CRD: 54 FT Dayboards: One 8KRB at 258° Ladder Orientation: 078°

CR-Bundle 1 2 As of: 9/11/2024

Cathlamet Bay North Channel Buoy 4 to Daybeacon 4 (LLNR 14750) Chart 18521

Current Structure Type: 5th Class FWNFR Buoy, with 45 FT ½” chain, 200lb Steel sinker.

Current Position: 46-12-17.026N 123-42-20.181W (WGS84). No survey required.

New Structure Type: Single Pile Steel (SPS) with Reduced Header system.

New Position: 46-12-22.700N 123-42.29.100W (WGS84), moving 915 FT at 306° to mark the northeast corner of the shoal at the channel entrance. No survey required.

Water Depth: 13 FT MLLW (20 FT MHHW) Bottom: Sand/Mud Tidal Range: 6.76 FT (Diurnal: 8.61 FT) Height of lantern stand above MHW: 15 FT Dayboards: Two 4TR at 130° and 285° Ladder Orientation: 045°

Multnomah Falls Bar Range Front Light (LLNR 11665) Chart 18531

Current Structure Type: Four Pile Wood Range (MPW) structure with 10 FT of 7’ x 7’ steel tower.

Current Position: 45-34-50.673N 122-06-28.852W (WGS84).

New Position: 45-34-51.76059N 122-06-39.93091W (NAD83). Construction shall use State Plane Coordinates Oregon North US Feet Y-702947.896; X-7789614.631). Survey required (Pre-build & Final). Range & Bearing to RR: 800.0 FT at 098.0°. New RF 800 RF bearing 278.0° from old RF.

Water Depth: 22 FT CRD (24 FT MHW) Bottom: Sand/Mud Tidal Range: 9.65 FT (Flood Stage 16.0 FT) Height of Top Rail above CRD: 24 FT Dayboards: One 6KRB at 278° Ladder Orientation: 098°

CR-Bundle 1 3 As of: 9/11/2024

Multnomah Falls Bar Range Rear Light (LLNR 11670) Chart 18531

Current Structure Type: Shore structure moving into the water, 15 FT of 7’ x 7’ steel tower (ST-S) on concrete footings.

Current Position: 45-34-49.648N 122-06-19.134W (WGS84).

New Structure: Four pile steel structure (MPS) with 10' x 10' platform at 21 ft CRD and 15 ft of 7' x 7' steel tower. top rail 39 ft CRD, focal plane 40 ft CRD.

New Position: 45-34-50.55920N 122-06-28.79303W (NAD83), moving 699 FT from a cliff on land into the due to shading, brushing issues and access. Construction shall use State Plane Coordinates Oregon North US Feet Y-701920.256; X-7790404.383). Survey required (Pre-build & Final). New Range & Bearing to RF: 800.0 FT at 278.0°. New RR 0.34 FT at 200.8° from previous RF.

Water Depth: 5 FT CRD (7 FT MHW) Bottom: Sand/Mud Tidal Range: 9.65 FT (Flood Stage 16.0 FT) Height of Top Rail above CRD: 53 FT Dayboards: One 6KRB at 278° Ladder Orientation: 098°

Multnomah Falls Dike Light 82 (LLNR 11680) Chart 18531

Current Structure Type: Four Pile Wood (MPW) tower with wooden platform Current Position: 45-34-54.692N 122-06-24.829W (WGS84). No survey required.

New Structure Type: Single Pile Steel (MPS) with 5’ x 5’ basket for the 6TR.

New Position: 45-34-55.100N 122-06-24.900W (WGS84), moving 40 FT at 000° to be clear of view from the land mass to the east. There is a USACE River Gauge attached to this structure. No survey required.

Water Depth: 15 FT CRD (17 FT MHW) Bottom: Sand/Mud Tidal Range: 1.74 FT (Flood Stage 16.0 FT) Height of Top Rail above CRD: 18 FT Dayboards: Two 6TR at 035° and 305° Ladder Orientation: 215°

CR-Bundle 1 4 As of: 9/11/2024

Skamania Light 85 (LLNR 11710) Chart 18531

Current Structure Type: Four Pile Wood (MPW) tower with wooden platform Current Position: 45-36-25.214N 122-03-20.521W (WGS84).

New Structure Type: Single Pile Steel (MPS) with a reduced header system.

New Position: 45-36-24.900N 122-03-19.900W (WGS84), moving 50 FT at 123°. May be moved closer to shore to reach depth. No survey required.

Water Depth: 10 FT CRD (12 FT MHW) Bottom: Sand/Mud Tidal Range: 1,74 FT (Flood Stage 16.0 FT) Height of lantern stand above CRD: 19 FT Dayboards: Two 4SG at 070° and 235° Ladder Orientation: 145°

There is a USACE River Gauge attached to this structure.

Geographic order of completion:

The aids to navigation are listed in geographic order from the locks at the Bonneville Dam to the end of the maintained Federal Navigation Channel in Richland, WA on the Columbia River, If a PSN number is listed in the title, it has been assigned to a Project by CEU.

Depths on the Upper Columbia and Snake Rivers on nautical charts are measured from the Minimum Operating Pool (MOP) for each Pool or body of water between dams. NOAA uses Mean Sea Level (MSL) for the base measurement, while the USACE uses the North American Vertical Datum (NAVD). The Mean Sea Levels and NAVD83 Minimum and difference to Full levels for each pool are listed below:

Bonneville Dam & Pool: MSL 72 FT - USACE Pool 76.7 FT (Range 9.9 FT) The Dalles Dam & Lake Celilo: MSL 160 FT – USACE Pool 158.3 FT (Range 5.0 FT) John Day Dam & Lake Umatilla: MSL 265 FT – USACE Pool 260.3 FT (Range 11.0 FT) McNary Dam & Lake Wallula: MSL 340 FT – USACE Pool 338.3FT (Range 5.0 FT)

CR-Bundle 1 5 As of: 9/11/2024

Significant changes proposed for the Upper Columbia River ATON

Wind Mountain Lower Range Front Light 17 (LLNR 11840) 4 pile concrete structure on a rock foundation. May not rebuild but will confirm with evaluation.

Hood River Boat Basin Daybeacon 1 is an abandoned Wood Structure that was closed off to river access by shoaling. The dayboards have been removed but the structure, a five pile wooden structure with platform remains. This site may not be easily accessible from the river. While it poses no hazard to navigation, it remains an attractive nuisance.

Messner Upper Range Front Light (LLNR 12615) The current light on this structure is 8’ below the top of the 12’ tall range. Rebuilding this to a top rail height of 17’ will allow the light to move on top into the basket, but might require adding an additional 2 feet to the lantern height of Messner Upper Range Rear Light (LLNR 12620) to prevent blurring of the lights when at the near end of the range channel.

Lake Wallula West Channel Junction Light “W” (LLNR 12980) The current light structure was knocked down on 3/02/2020 and recovered on 8/16/2020. It is currently marked with a temporary lighted buoy.

CR-Bundle 1 6 As of: 9/11/2024

Cascade Rapids Upper Range Front Light 15 (LLNR 11805) Chart 18532

Current Structure Type: Eight Pile Wood Range (MPW) with 10 FT of 7’ x 7’ Steel Tower.

Current Position: 45-41-18.392N 121-53-06.694W (WGS84).

New Position: 45-41-17.86214N 121-53-07.16150W (NAD83), Construction shall use State Plane Coordinates Oregon North US Feet Y-740075.827; X-7848080.039). Pre & After Build Survey Required. Range & Bearing to RR: 1350.0 FT at 031.5°, moving 64.2 FT in the direction of 215.7°.

Water Depth: 18FT MPL (22 FT FPL) Bottom: Sand/Gravel/Rock Pool Range: 3.7 FT (MAX Pool 9.9 FT) Height of Top Rail above MOP: 27 FT Dayboards: One 6KRB at 211° and one 4SG at 121° Ladder Orientation: 031°

Stevenson Lower Range Rear Light (LLNR 11830) Chart 18532

Current Structure Type: Four Pile Wood Range (MPW) with 25 FT of 7’ x 7’ Steel Tower.

Current Position: 45-40-27.400N 121-54-31.654W (WGS84).

New Structure Type: Four Pile Steel Range, with 10’ x 10’ platform at 20 FT above MOP & 25 FT of 7’ x 7’ tower. Ladder Safety Climb Device required on tower.

New Position: 45-40-27.36794N 121-54-31.61870W (NAD83). Construction shall use State Plane Coordinates Oregon North US Feet Y-735065.985; X-7841996.616). Pre & After Build Survey required. Range & Bearing to RF: 2,833.5 FT at 057.8°, moving 1.2 FT in the direction of’ 171°.

Water Depth: 11 FT MPL (15 FT FPL) Bottom: Sand/Gravel/Rock Pool Range: 3.7 FT (MAX Pool 9.9 FT0 Height of Top Rail above MOP: 48 FT Dayboards: One 6KRB at 058° Ladder Orientation: 238°

Change Stevenson Lower Range Front LT dayboard to a 6KRB at the time of rebuilding

CR-Bundle 1 7 As of: 9/11/2024

Bonneville Pool Light 22 (LLNR 11855) Move to water Chart 18532

Current Structure Type: Failing concrete pile shore structure, on edge of water.

Current Position: 45-41-53.715N 121-48-37.321 (WGS84)

New Structure: Three Pile Steel (MPS) with 5’ x 5’ basket for 6TR.

New Position: 45-41-53.400N 121-48-49.200W (WGS84), moving from shore 850 FT at 265°. May be moved 100 FT east or west to reach desired depth. No survey required.

Water Depth: 16 FT MPL (20 FT FPL) Bottom: Sand/Gravel/Rock Pool Range: 3.7 FT (MAX Pool 9.9 FT) Height of Top Rail: 17 FT MOP Dayboards: Two 6TR at 325° & 055° Ladder Orientation: 235°

Bonneville Pool Light 23 (LLNR 11860) SSMR 09-017 Chart 18532 Current Structure Type: Five Pile Wood (MPW) with wooden basket Current and New Position: 45-41-48.291N 121-44-14.035W (WGS84)

New Structure Type: Three Pile Steel (MPS) with a reduced header system. May be moved in a radius of 25 FT.

Water Depth: 20 FT MPL (24 FT FPL) Bottom: Sand/Gravel/Rock Pool Range: 3.7 FT (MAX Pool 9.9 FT) Height of lantern stand above MOP: 15 FT Dayboards: Two 4SG at 145° & 235° Ladder Orientation: 325°

CR-Bundle 1 8 As of: 9/11/2024

Wind Mountain Upper Range Front Light 26 (LLNR 11870) Chart 18532

Current Structure Type: Four Pile Wooden Range (MPW) with wooden platform.

Current Position: 45-41-34.443N 121-42-09.203W (WGS84).

New Position: 45-41-34.64637N 121-42-12.60793W (NAD83), moving 247 FT at 275°. Construction shall use State Plane Coordinates Oregon North US Feet Y-741031.218; X-7894563.790). Range & Bearing to RR 3,500 FT at 094.9°. Pre & After Build Survey required.

Water Depth: 18 FT MPL (22 FT FPL) Bottom: Sand/Gravel/Rock Pool Range: 3.7 FT (MAX Pool 9.9 FT) Height of top rail above MOP: 22 FT Dayboards: One 8KRB at 275° and one 4TR at 015° Ladder Orientation: 325°

Wind Mountain Upper Range Rear (LLNR 11875) Chart 18532

Current Structure Type: Eight Pile Wooden Range (MPW) with 30 FT of 7’ x 7’ steel tower.

Current Position: 45-41-31.222N 121-41-16.530W (WGS84).

New Structure Type: Four Pile Steel Range, with 10’ x 10’ platform at 20 FT MOP & 35 FT of 7’ x 7’ tower. Ladder Safety Climb device required on tower.

New Position: 45-41-31.63889N 121-41-23.48612W (NAD83). Construction shall use State Plane Coordinates Oregon North US Feet Y- 740674.996; X- 7898045.615) Pre & After Build Survey Required. Range & Bearing to RF: 3,500 FT at 274.9°, moving 500 FT in the direction of 275°.

Water Depth: 23 FT MPL (27 FT FPL) Bottom: Sand/Gravel/Rock Pool Range: 3.7 FT (MAX Pool 9.9 FT) Height of top rail above MOP: 58 FT Dayboards: One 8KRB at 275° Ladder Orientation: 095°

CR-Bundle 1 9 As of: 9/11/2024

Hood River Boat Basin Daybeacon 1, Abandoned Wood Structure Chart 18532

Current Structure Type: Five Pile Wood (MPW) with wooden platform Current Position: 45-42-59.994N 121-430-34.531W (WGS84).

Demo (Remove) Structure only

Water Depth: 2 FT MPL Pool Range: 4 FT Bottom: Sand

Lake Celilo Daybeacon 27 (LLNR 12230) Chart 18533 Current Structure Type: Single Steel pile with basket, leaning from aircraft strike.

Current Position: 45-39-44.079N 120-53-07.313W (WGS84).

New Structure Type: Single Pile Steel (SPS) with reduced header. No survey required.

New Position: Same, 45-39-44.079N 120-53-07.313W (WGS84). May be moved northwest 100 FT to reach depth of 15 FT, but not to the north or south.

Water Depth: 15 FT MPL (17 FT FPL) Bottom: Sand/Gravel/Rock Pool Range: 1.7 FT (MAX Pool 5.0 FT) Height of lantern stand above MOP: 17 FT Dayboards: Two 4SG at 180° & 270° Ladder Orientation: 000°

CR-Bundle 1 10 As of: 9/11/2024

Lake Umatilla Light 13 (LLNR 12460) Chart 18535 Current Structure Type: Metal Tripod Pole (non-standard) and basket.

Current Position: 45-42-02.432N 120-26-30.178W (WGS84);

New Structure Type: Single Pile Steel (SPS) with reduced header. No survey required.

New Position: 45-42-02.443N 120-26-30.178W (WGS84). May be moved east or west 100 FT to meet depth of 12 FT, but not to the north or south.

Water Depth: 12 FT MOP (17 FT FPL) Bottom: Sand Pool Range: 4.7 FT (MAX Pool 11.0 FT) Height of Lantern Stand above: 20 FT MOP Dayboards: Two 4SG at 125° & 215° Ladder Orientation: 305°

Lake Umatilla Light 30 (LLNR 12535) Chart 18537

Current Structure Type: Steel I-Beam pile with two steel support beams (non-standard) and basket.

Current Position: 45-49-26.812N 119-55-52.830W (WGS84).

New Structure Type: Three Pile Steel (MPS) with 5’ x 5’ basket for dayboards. No survey required New Position: Same, 45-49-26.812N 119-55-52.830W (WGS84). May move eastly up to 200 FT but must not move southerly of the pile dolphin at 45-49-27.335N 119-55-49.001W (WGS84).

Water Depth: 28 FT MOP (33 FT FPL) Bottom: Sand Pool Range: 4.7 FT (MAX Pool 11.0 FT) Height of Lantern Stand above: 20 FT MOP Dayboards: Two 4TR at 090° & 270° Ladder Orientation: 180°

CR-Bundle 1 11 As of: 9/11/2024

Lake Umatilla Light 36 (LLNR 12560) Chart 18537

Current Structure Type: Metal Tripod Pole (non-standard) and basket.

Current Position: 45-50-42.563N 119-46-58.881W (WGS84).

New Structure Type: Single Pile Steel (SPS) with Reduced Header System. No survey required.

New Position: Same, 45-50-42.563N 119-46-58.881W (WGS84). Structure may be moved in a 100 FT radius to reach the depth of 23 FT.

Water Depth: 23 FT MOP (28 FT FPL) Bottom: Sand Pool Range: 4.7 FT (MAX Pool 11.0 FT) Height of Lantern Stand above: 17 FT MOP Dayboards: Two 4TR at 045° & 315° Ladder Orientation: 225°

CR-Bundle 1 12 As of: 9/11/2024

Lake Umatilla Light 40 (LLNR 12605) SSMR02-08 Chart 18537

Current Structure Type: Steel I-Beam pile (non-standard) and basket Current Position: 45-51-10.936N 119-41-25.740W (WGS84). Structure may be moved

New Position: Same, 45-51-10.936N 119-41-25.740W (WGS84). Structure may be moved south easterly 100 FT to meet depth of 5 FT.

Water Depth: 5 FT MOP (10 FT FPL) Bottom: Sand Pool Range: 4.7 FT (MAX Pool 11.0 FT) Height of Lantern Stand above: 17 FT MOP Dayboards: Two 4TR at 040° & 310° Ladder Orientation: 220°

Irrigon Lower Range Front Light 60 (LLNR 12665) SSMR CR-003A-21 Chart 18539

Current Structure Type: Three I-Beam Steel with a concrete platform and 10 FT of 7’ x 7’ steel tower.

Current Position: 45-54-08.893N 119-30-50.138W (WGS84).

New Structure Type: Three Pile Steel, with 7’ x 7’ basket. Pre & After Build Survey Required.

New Position: 45-54-09.87294N 119-30-52.76042W (NAD83). Construction shall use State Plane Coordinates Oregon North US Feet Y-816766.406 X-8452929.187). New Range & Bearing to RR:

1,275 FT at 117.5°. moving 214.8 FT at 072°

Water Depth: 1 FT MOP (12 FT FPL) Bottom: Sand and Rock Pool Range: 11.0 FT (Max Pool Range 19.5 FT) Height of Top Rail above: 20 FT MOP Dayboards: One 6KRW at 297° and one 4TR at 027° Ladder Orientation: 117°

CR-Bundle 1 13 As of: 9/11/2024

Lake Wallula West Channel Junction Light “W” (LLNR 12980) SSMR CR-005-20 Chart 18542

Previous Structure Type: Three Pile Steel (MPS) with 5’ x 5’ steel basket. Structure was destroyed but recovered.

Current Position: 46-07-34.114N 118-58-18.996W (WGS84).

New Structure Type: Three Pile Steel (SPS) with Reduced Header System and lantern stand.

New Position: Same, 46-07-34.098N 118-58-18.936W. May be moved 275 FT at 025° to the northwest to reach the desired depth. No survey required.

Water Depth: 18FT MOP (20 FT FPL) Bottom: Sand and Gravel Pool Range: 1.7 FT (Max Pool Range 5 FT) Height of Top Rail above: 20 FT MOP Dayboards: Two 4JG at 155° and 335° Ladder Orientation: 245°

CR-Bundle 1 14 As of: 9/11/2024

Homly Center Channel Light 1 (LLNR 12985) SSMR CR-001-25 Chart 18542

Current Structure Type: Destroyed Single Pile Steel (SPS) with 5’ x 5’ steel basket Current Position: 46-08-06.052N 118-58-59.557W (WGS84).

New Structure Type: Single Pile Steel (SPS) with Reduced Header System. No survey required New Position: Same, 46-08-06.052N 118-58-59.557W (WGS84), but may be moved 25 FT to the southwest to reach desired depth of 10 FT.

Water Depth: 10 FT MOP (15 FT FPL) Bottom: Sand and Gravel Pool Range: 5 FT (Max Pool Range 22 FT) Height of lantern stand above: 17 FT MOP Dayboards: Two 4SG at 145° and 335° Ladder Orientation: 060°

Lake Wallula Light 30 (LLNR 12995) SSMR 05-08 Chart 18542

Current Position: 46-07-51.499N 118-57-50.962W (WGS84).

New Structure Type: Single Pile Steel (SPS) with Reduced Header System. No survey required New Position: Same, 46-07-51.499N 118-57-50.962W (WGS84). No survey required. May be moved up to 100 FT and closer to shore to reach depth of 15 FT.

Water Depth: 15FT MOP (17 FT FPL) Bottom: Sand and Gravel Pool Range: 1.7 FT (Max Pool Range 5 FT) Height of lantern stand above: 17 FT MOP Dayboards: Two 4TR at 180° and 270° Ladder Orientation: 090°

CR-Bundle 1 15 As of: 9/11/2024

Lake Wallula Light 34 (LLNR 13000) SSMR 06-08 Chart 18542

Current Position: 46-08-52.718N 118-58-40.700W (WGS84). No survey required.

New Position: Same, 46-08-52.718N 118-58-40.700W (WGS84). No survey required. May be moved 200 FT northeast and closer to shore to reach depth of 13 FT.

Water Depth: 13 FT MOP (15 FT FPL) Bottom: Sand and Gravel

Dayboards: Two 4TR at 170° and 260° Ladder Orientation: 080°

Lake Wallula Daybeacon 44 (LLNR 13045) SSMR 07-08 Chart 18542

Current Structure Type: Three Pile Wood (MPW) battered pile dolphin.

Current Position: 46-12-09.868N 119-03-31.128W.

New Structure Type: Single Pile Steel (SPS) with Reduced Header System New Position: 46-12-09.100N 119-03-27.900W (WGS84), moving 245 FT at 108°. No survey

Water Depth: 15 FT MOP (17 FT FPL) Bottom: Sand and Gravel

Dayboards: Two 4TR at 150° and 240° Ladder Orientation: 060°

CR-Bundle 1 16 As of: 9/11/2024

Lake Wallula Light 52 (LLNR 13060) SSMR 13-08 Chart 18543

Current Position: 46-14-02.086N 119-11-26.310W (WGS84).

New Structure Type: Three Pile Steel (MPS) with 5’ x 5’ basket for dayboards. No survey required.

New Position: Same, 46-14-02.086N 119-11-26.310W (WGS84). Must stay at current position or just southeast of the charted underwater obstruction.

Water Depth: 25 FT MOP (27 FT FPL) Bottom: Sand and Gravel Pool Range: 1.7 FT (Max Pool Range 5 FT) Height of top rail above: 20 FT MOP Dayboards: Three 4TR at 055°, 145° and 235° Ladder Orientation: 325°

Lake Wallula Daybeacon 68 (LLNR 13085) SSMR 04-08 Chart 18543

Current Structure Type: Three Pile Wood (MPW) battered pile dolphin Current Position: 46-16-21.526N 119-15-43.266W (WGS84).

New Position: Same, 46-16-21.526N 119-15-43.266W (WGS84). May be moved 100 FT closer to shore to reach depth of 15 FT.

Water Depth: 15 FT MOP (17 FT FPL) Bottom: Sand and Gravel Pool Range: 1.7 FT (Max Pool Range 5 FT) Height of top rail above: 15 FT MOP Dayboards: Two 4TR at 160° and 250° Ladder Orientation: 070°

CR-Bundle 1 17 As of: 9/11/2024

Geographic order of completion:

While no major changes are planned, the purpose of this is to replace the remaining wooden aquatic structures on the Lower Columbia River and Tributaries.

There a number of floating aids to navigation that are being considered for replacement with fixed structures at the request of ANT Astoria. These are:

Chinook Channel Buoy 3 to Light 3 (LLNR 14527) Chinook Channel Buoy 4 to Light 4 (LLNR 14528)

Of note there are two different types of depth and height measurement used for these aids. Structures that are west of Harrington Point, WA (Chart 18521) use Mean Lower Low Water (MLLW) and Mean High Water (MHW). Structures that are east of Harrington Point (Chart 18523 and on), WA use Columbia River Datum (CRD) and Columbia River Flood Stage. On the Willamette River, use Willamette River Datum (WRD) and Willamette River Flood Stage.

Chinook Channel Light 1 (LLNR 14520) SSMR CR-012A-20 Chart 18521

Current Structure Type: Single Pile Steel (MPS) with 5’ x 5’ steel basket Current Position: 46-15-31.472N 123-58-11.922W (WGS84).

New Structure Type: Three Pile Steel (MPS) with Reduced Header system. No survey required.

New Position: 46-15-26.800N 123-58-15.300W (WGS84), moving 520 FT at 210° to mark the west end of the charted wreck. (Review wreck position with USACE)

Water Depth: 13 FT MLLW (21 FT MHW) Bottom: Sand/Mud Tidal Range: 6.62 FT (Diurnal 8.61 FT) Height of lantern stand above MHW: 17 FT Dayboards: Two 4SG at 050° and 215° Ladder Orientation: 125°

CR-Bundle 1 18 As of: 9/11/2024

Chinook Channel Light 2 (LLNR 14525) SSMR CR-013A-20 Chart 18521

Current Position: 46-15-46.915N 123-57-39.001W (WGS84).

New Structure Type: Single Pile Steel (SPS) with reduced header system.

New Position: 46-15-47.400N 123-57-39.600W (WGS84), moving 50 FT at 327° closer to the channel. No survey required.

Water Depth: 5 FT MLLW (12 FT MHW) Bottom: Sand/Mud Tidal Range: 6.76 FT (Diurnal 8.61 FT) Height of lantern stand above MHW: 17 FT Dayboards: Two 4TR at 040° and 240° Ladder Orientation: 330°

Chinook Channel Buoy 3 to Light 3 (LLNR 14527) SSMR CR-014A-20 Chart 18521

Current Structure Type: 5th Class FWCFR Buoy, with 45 FT ½” chain, & 200lb Steel sinker.

Current Position: 46-15-49.082N 123-57-41.211W (WGS84).

New Position: 46-15-49.200N 123-57-41.200W (WGS84), moving 30 FT at 327° to move outside the Federal Channel. The buoy is 15 FT inside the Federal Channel. The structure should be built between 30 FT to 25 FT outside the channel. No survey required.

Water Depth: 6 FT MLLW (13 FT MHW) Bottom: Sand/Mud Tidal Range: 6.31 FT (Diurnal 8.48 FT) Height of lantern stand above: 17 FT MHW Dayboards: Two 4SG at 045° and 245° Ladder Orientation: 225°

CR-Bundle 1 19 As of: 9/11/2024

Chinook Channel Buoy 4 to Light 4 (LLNR 14528) SSMR CR-016A-20 Chart 18521

Current Structure Type: 5th Class FWNFR Buoy, with 30 FT ½” chain, & 200lb Steel sinker.

Current Position: 46-16-01.722N 123-57-19.105W (WGS84).

New Structure Type: Single Pile Steel (SPS) with Reduced Header system..

New Position: 46-15-58.800N 123-57-21.300W (WGS84), moving 325 FT at 205°to mark the southwest corner of the shoal. The current Buoy is 35 FT outside the Federal channel. No survey

Water Depth: 7 FT MLLW (14 FT MHW) Bottom: Sand/Mud Tidal Range: 6.31 FT (Diurnal 8.48 FT) Height of stand above: 15 FT MHW Dayboards: Two 4TR at 010° and 225° Ladder Orientation: 260°

Chinook Channel Light 5 (LLNR 14530) SSMR CR-015A-20 Chart 18521

Current Structure Type: Five Pile Wood (MPW) with wooden basket.

Current Position: 46-16-02.734N 123-57-21.857W (WGS84).

New Position: 46-16-02.900N 123-57-21.300W (WGS84), moving 38 FT at 058° to mark western corner of turning basin. No survey required.

Water Depth: 5 FT MLLW (12 FT MHW) Bottom: Sand/Mud Tidal Range: 6.31 FT (Diurnal 8.48 FT) Height of lantern stand above MHW: 15 FT

CR-Bundle 1 20 As of: 9/11/2024

Dayboards: Two 4SG at 020° and 225° Ladder Orientation: 125°

Chinook Channel Light 8 (LLNR 14535) SSMR CR-017A-20 Chart 18521

Current and New Position: 46-16-19.975N 123-57-11.454W (WGS84).

New Position: 46-16-20.500N 123-57-11.800W (WGS84), moving 100 FT at 345°. Structure may be moved within a radius of 20 FT to reach depth but not closer than 70 FT to the Federal channel boundary to the north. No survey required.

Water Depth: 5 FT MLLW (14 FT MHW) Bottom: Sand/Mud Tidal Range: 6.62 FT (Diurnal 8.61 FT) Height of lantern stand above MHW 15 FT Dayboards: Two 4TR at 065° and 335° Ladder Orientation: 155°

North Channel Daybeacon 10 (LLNR 14635) SSMR CR-020A-20 Chart 18521

Structure Type: Three Pile Wooden structure (MPW).

Current Position: 46-15-46.471N 123-47-14.460W (WGS84).

New Position: Same, 46-15-46.471N 123-47-14.460W (WGS84). Structure may be moved 25 FT to the northeast or southwest to reach depth. No survey required.

Water Depth: 10 FT MLLW (17 FT MHW) Bottom: Sand/Mud Tidal Range: 6.78 FT (Diurnal 8.69 FT)) Height of lantern stand above MHW 17 FT Dayboards: Two 4TR at 060° and 230° Ladder Orientation: 315°

CR-Bundle 1 21 As of: 9/11/2024

North Channel Daybeacon 12 (LLNR 14640) SSMR CR-020A-20 Chart 18521

Structure Type: Two Pile Battered Wooden structure (MPW).

Current Position: 46-16-03.256N 123-46-28.009W (WGS84).

New Position: Same, 46-16-03.256N 123-46-28.009W (WGS84). Structure may be moved250 FT to the northeast or southwest to reach depth. No survey required.

Tidal Range: 6.78 FT (Diurnal 8.69 FT) Height of lantern stand above MHW 16 FT Dayboards: Two 4TR at 060° and 250° Ladder Orientation: 320°

Grays Point Light 13 (LLNR 14645) SSMR CR-018A-20 Chart 18521

Structure Type: Single Pile Steel I-Beam (SPS) with platform. I-Beam is deteriorating.

Current and New Position: 46-16-23.296N 123-46-00.469W (WGS84).

New Position: Same, 46-16-23.296N 123-46-00.469. Structure may be moved 20 FT to the north to reach depth. No survey required

Tidal Range: 6.78 FT (Diurnal 8.69 FT) Height of lantern stand above MHW: 16 FT Dayboards: Two 4SG at 075° and 240° Ladder Orientation: 140°

CR-Bundle 1 22 As of: 9/11/2024

Elochoman Buoy 1 (LLNR 10535) SSMR CR-002-24 Chart 18523

Structure Type: 3rd Class CFR buoy with 55 FT of ¾” chain and 3,000lb concrete sinker.

Current Position: 46-12-15.733N 123-23-23.687W (WGS84).

New Structure Type: Single Pile Steel (SPS) with a reduced header system. No ladder device.

New Position: 46-12-16.700N 123-23-23.700W (WGS84), moving 100 FT at 004° to mark the southern corner of the shoal at the channel entrance. Structure may be moved 20 FT to the northeast to reach the desired depth. No survey required

Water Depth: 11 FT CRD (17 FT MHW) Bottom: Sand/Mud Tidal Range: 5.96 FT (Flood Stage 12.0 FT) Height of lantern stand 17 FT CRD Dayboards: Two 4SG at 010° and 220° Ladder Orientation: 100°

Elochoman Daybeacon 2 (LLNR 10540) SSMR CR-003-24 Chart 18523 Structure Type: Single Pile Steel I-Beam (SPS) with platform. I-Beam is deteriorating.

Current Position: 46-12-29.450N 123-23-18.733W (WGS84).

New Position: Same, 46-12-29.450N 123-23-18.733W (WGS84). May be moved 20 FT to the southwest to reach the desired depth. No survey required.

Water Depth: 9 FT CRD (15 FT MHW) Bottom: Sand/Mud Tidal Range: 5.96 FT (Flood Stage 12.0 FT) Height of lantern stand 17 FT CRD Dayboards: Two 3TR at 145° and 260° Ladder Orientation: 220°

CR-Bundle 1 23 As of: 9/11/2024

Multnomah Channel Daybeacon 3 (LLNR 14830) SSMR CR-008-21 Chart 18524

Current Structure Type: Three Pile Wood (MPW) no basket Current Position: 45-51-54.695N 122-47-35.468W (WGS84). Structure destroyed.

New Structure Type: Single Pile Steel (SPS) with Reduced Header system New Position: 45-51-54.695N 122-47-35.468W (WGS84). Place new structure on site of old structure, regardless of position. No survey required.

Water Depth: 5 FT CRD (8 FT MHW) Bottom: Sand/Mud Tidal Range: 2.52 FT (Flood Stage 15.5 FT) Height of lantern stand 16 FT CRD Dayboards: Two 3SG at 190° and 340° Ladder Orientation: 270°