4._6140972_Appendix_B_Structure_Photos.pdf

APPENDIX B: ATON STRUCTURE PHOTOS AND NOTES

Basket and Ladder Orientation for Dayboards

Example 3-pile Structure Example 4-pile Structure

Base Bid ATON Structures

1) Grays Harbor Bar Rear Range Light (LLNR 15545)

a. BLUF: No demolition work. Rebuild aid as 4-pile structure with

10’x10’ platform and 50’ high 7’x7’ sectional tower assembly. Access to new location by barge mounted crane may be challenging due to breakwater and proximity of bar. This structure is the first priority structure, construction will start on this structure as soon as is possible.

b. Background: Previous structure was located on land in the Owyhut Wildlife Recreation Area. The structure fell in early 2017 due to severe erosion. The remaining foundation will remain as is.

c. Notes: The new structure location will be in the water. If access is impeded by the Point Brown Breakwater, contractor is permitted to temporarily remove approximately 90 cubic yards (cy) of the breakwater by barge-mounted crane. Any material and stonework removed, must be retained on a barge and re-installed in roughly the same configuration as soon as new ATON is completed. Pre and After build surveys are required.

d. Applicable ATON-STD Drawings: 6, 8, 12, 14.

e. Image: New structure will be similar in design to image below.

f. See Appendix A for additional structure details.

Example of 4-pile ATON with Tall Tower Assembly

2) Point Chehalis Range Front Light (LLNR 15585)

a. BLUF: There are two 4-pile structures here. Both old structures should be demolished, rebuild aid as 4-pile structure with 10’x10’ platform and 20’ high 7’x7’ sectional tower assembly. Access to this location by barge mounted crane may be challenging due to proximity to bar. Sewage outfall line will be disconnected to accommodate demolition of existing structures, and then reconnected to new single-pile daymarker.

b. Background: This range was rebuilt in 2009 to replace the original steel structure which was deteriorating. The older structure is just east of the newer structure. The original structure was left undisturbed as the city of Westport had attached a sewage wastewater outfall line (License DOT-CG13-296-74). The newer structure is too low, unfortunately, and suffers wave damage to the platform deck and steel tower. The old structure interferes with small boats ability to access the new structure. A sub-cable was also originally attached to the older structure, but was reported broken off in 1988.

c. Notes: Contractor will need to work with divers (provided by City of

Westport) to detach sewage outfall line and remove structure. Ladder should be placed on northeast corner of pilings to ensure safe approach and access by small boats. Pre and After build surveys are required.

Points of contact for City of Westport:

Public Works Director: Kevin Goodrich, 360-268-0131 Wastewater Supervisor: Jim Atkinson, 360-268-0512

d. Applicable ATON-STD Drawings: 6, 8, 12, 14.

e. Image: Current structures are shown in image below.

Point Chehalis Range Front Light (New and Old)

3) Sewage Outfall Line PATON

a. BLUF: This structure does not exist yet. It will be a new private

ATON structure to mark the sewage outfall line. It will be 15’ out of the water with a Reduced ATON Header mounted to it.

b. Background: Point Chehalis Range Front Light is connected to a sewage wastewater outfall line. A new single pile dayboard will be installed to anchor the sewage outfall line and mark the hazard.

Installation of this single pile dayboard must be coordinated with diving services provided by the City of Westport.

c. Notes: Sewage outfall line is connected to the East structure, on the SE pillar, with two straps.

Points of contact for City of Westport:

Public Works Director: Kevin Goodrich, 360-268-0131 Wastewater Supervisor: Jim Atkinson, 360-268-0512

d. Applicable ATON-STD Drawings: 1, 9, 11, 13.

e. Image: Markings for this structure will be similar to image below.

Example of Regulatory Marking

4) Grays Harbor South Reach Range A Front Light (LLNR 15610)

a. BLUF: Demo the existing 3-pile steel structure, rebuild as a 3-pile steel structure with 7x7 platform.

b. Background: The platform and piles have been damaged and is showing serious deterioration.

c. Notes: Pre and after build surveys are required.

d. Applicable ATON-STD Drawings: 4, 10, 11, 12.

e. Image: Current structure is shown in image below.

South Reach Range A Front Light (LLNR 15610)

5) Grays Harbor North Channel Light E (LLNR 15757)

a. BLUF: This structure was Range C Front Light. Demo the existing 4-pile steel structure, rebuild as a 3-pile steel structure with 5x5 platform.

b. Background: Structure is deteriorating and needs to be replaced.

c. Notes: none.

d. Applicable ATON-STD Drawings: 3, 9, 11, 13.

North Reach Range C Front Light (LLNR 15757)

(current condition)

6) Grays Harbor North Channel Light D (LLNR 15728)

a. BLUF: This structure was Range D Front Light. Demo the existing 4-pile steel structure, rebuild as a 3-pile steel structure with 5x5 platform.

g. Background: Structure is deteriorating and needs to be replaced.

h. Notes: none.

b. Applicable ATON-STD Drawings: 3, 9, 11, 13.

c. Image: Current structure is shown in image below.

d. See Appendix A for additional structure details.

North Channel Range D Front Light (Current condition on the right)

7) Grays Harbor North Channel Range F Front Light (LLNR 15785)

i. BLUF: Demo the existing 4-pile wood structure, rebuild as a 3-pile steel structure with 7x7 platform.

j. Background: Structure is deteriorating and navigation channel has been re-aligned.

k. Notes: Pre and after build surveys are required.

l. Applicable ATON-STD Drawings: 4, 10, 11, 12.

m. Image: Current structure is shown in image below.

n. See Appendix A for additional structure details.

North Channel Range F Front Light (LLNR 15785)

6) Grays Harbor North Channel Range F Rear Light (LLNR 15790)

a. BLUF: Demo the existing 4-pile steel structure, rebuild as a 4-pile steel structure with 20’ sectional tower assembly.

b. Background: Current structure is no longer relevant due to channel re-alignment.

c. Notes: Pre and after build surveys are required.

d. Applicable ATON-STD Drawings: 4, 10, 11, 12.

North Channel Range F Rear Light

7) Grays Harbor South Reach Light 20 (LLNR 15650)

a. BLUF: This structure was Range AA Front Light. Do not demolish the structure. Remove the tower only and install GFM. Piles and platform will remain.

b. Background: Structure has been converted from a range to a dayboard.

Tower is no longer needed.

c. Notes: After tower is removed, dayboard mount, lantern stand, and new platform decking are to be installed by contractor.

d. Applicable ATON-STD Drawings: 4, 10, 11, 12.

North Reach Range AA Front Light (current condition on the right)

8) Grays Harbor South Channel Light 6 (LLNR 15950)

a. BLUF: This structure was North Channel Range “B” Rear Light (LLNR

15690). Do not demolish the structure. Remove the 30’ of 7x7 tower only. Piles and platform will remain.

b. Background: Structure has been converted from a range to a dayboard.

Tower is no longer needed.

c. Notes: After tower is removed, dayboard mount, lantern stand, and new platform decking are to be installed by contractor.

North Channel Range B Rear Light (current condition on the right)

9) Grays Harbor North Channel Light F (LLNR 15762)

a. BLUF: This structure was Range “C” Rear Light. Demo the existing 4-pile steel structure, no rebuild.

b. Background: Current structure is no longer relevant due to channel re-alignment.

c. Notes: none.

d. Applicable ATON-STD Drawings: 4, 10, 11, 12.

NORTH REACH RANGE C REAR LIGHT (LLNR 15720)

Optional Line Items

1) Westhaven South Breakwater Lt 11 (LLNR 16015)

a. BLUF: Replace 5x5 platform only.

b. Background: Platform is deteriorating.

c. Notes: Might need to replace ladders and/or entire single pile structure if determined to be necessary.

d. Applicable ATON-STD Drawings: 1, 9, 11, 13.

Westhaven South Breakwater Lt 11 (LLNR 16015)

2) Grays Harbor South Reach Light A (LLNR 15647)

a. BLUF: This structure was Range AA Rear Light. Demo entire 4-pile structure, no rebuild.

b. Background: Current structure is no longer relevant due to channel re-alignment.

NORTH REACH RANGE "AA" REAR LIGHT (LLNR 15670)

3) Grays Harbor North Channel Light B (LLNR 15685)

a. BLUF: This structure was Range B Front Light. Demo entire 4-pile structure, no rebuild.

b. Background: Current structure is no longer relevant due to channel re-alignment.

c. Notes: none.

d. Applicable ATON-STD Drawings: 4, 10, 11, 12.

NORTH REACH RANGE "B" FRONT LIGHT (LLNR 15685)

4) Grays Harbor North Channel Light C (LLNR 15727)

a. BLUF: This structure was Range D Rear Light. Demo entire 4-pile structure, no rebuild.

c. Notes: range boards and light have already been removed.

NORTH CHANNEL RANGE "D" REAR LIGHT (LLNR 15740)

5) Grays Harbor North Channel Unmarked Range Structure (LLNR 15750)

a. BLUF: This structure was Range E Rear Light. Demo entire 4-pile structure, no rebuild.

b. Background: Current structure is no longer relevant due to channel re-alignment. This structure is in a tidal zone, structure is accessible by small boat during high tide. Barge should be able to access area depending on the tides.

c. Notes: range boards and light have already been removed.

NORTH CHANNEL RANGE "E" REAR LIGHT (LLNR 15750)

6) Aberdeen Reach Light (LLNR 15882)

a. BLUF: This structure was Cow Point Reach Range J Front Light. Demo entire 3-pile structure, no rebuild.

c. Notes: Structure is in shoal waters, may be difficult to access by barge mounted crane.

COW POINT REACH RANGE "J" FRONT LIGHT (LLNR 15860)

7) Aberdeen Reach Light 1A (LLNR 15889)

a. BLUF: This structure was Aberdeen Reach Range L Front Light. Demo entire 3-pile steel structure, no rebuild.

b. Background: Current structure is no longer necessary for safe navigation.

ABERDEEN REACH RANGE "L" FRONT LIGHT (LLNR 15890)

8) Aberdeen Reach Unmarked Wood Range Structure (LLNR 15895)

a. BLUF: This structure was Aberdeen Reach Range L Rear Light. Demo entire 4-pile wood structure, no rebuild.

b. Background: Current structure is no longer necessary for safe navigation. Aberdeeen Reach Range L Rear Light has significant deterioration of the wooden piles and the tower has already been removed.

c. Notes: Commercial power to the site has been discontinued and confirmed by Grays Harbor PUD#1.

d. Applicable ATON-STD Drawings: none.

ABERDEEN REACH RANGE "L" REAR LIGHT (LLNR 15895)