Public Notice of Application for State of Washington …...Eelgrass and macroalgae will be identified in the contract drawings and specifications. Temporary construction activities

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Project Name: Service Pier Extension Applicant: Naval Base Kitsap Project Description: Extend the existing Service Pier with a 68-foot-wide by 520-foot-long addition, and associated support facilities on the pier and an upland site. Proposed mitigation for impacts includes purchase of credits from the Hood Canal Coordinating Council In-Lieu Fee Program. Project Location: Wahoo Road, Naval Base Kitsap-Bangor, Hood Canal, Silverdale, Kitsap County, Washington. Public Notice Date: February 15, 2019 Comment Period Ends: March 8, 2019 Application available on Ecology’s Federal Permit Website: https://ecology.wa.gov/401-and-CZM-public-notices. To obtain a hard copy of the project information, please call 360-407-6076.

Ecology will review the work pursuant to Section 401 of the Clean Water Act, with applicable provisions of State water pollution control laws. Ecology is requesting comments from the public, state and local agencies, tribes, and other interested parties to evaluate the impacts of each proposed activity. Conventional mail or e-mail comments on this public notice will be accepted and made part of the record. Comments should be sent to: Department of Ecology—SEA Program Federal Project Coordinator Post Office Box 47600 Olympia, Washington 98504 or Online - http://ws.ecology.commentinput.com/?id=H4dNa

Public Notice of Application for State of Washington 401 Water Quality Certification

NOTE: This is the second public notice issued for this project. Naval Base Kitsap submitted a revised application for certification of this project on February 4, 2019.

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WASHINGTON STATE

Joint Aquatic Resources Permit Application (JARPA) Form1,2 [help]

USE BLACK OR BLUE INK TO ENTER ANSWERS IN THE WHITE SPACES BELOW.

Part 1–Project Identification

1. Project Name (A name for your project that you create. Examples: Smith’s Dock or Seabrook Lane Development) [help]

Service Pier Extension – NWS-2018-242 (Revised February 2019)

Part 2–Applicant The person and/or organization responsible for the project. [help]

2a. Name (Last, First, Middle)

Schrader, Alan, Captain U.S. Navy

2b. Organization (If applicable)

Naval Base Kitsap

2c. Mailing Address (Street or PO Box)

120 South Dewey Street, Building 443

2d. City, State, Zip

Bremerton, Washington 98314-5020

2e. Phone (1) 2f. Phone (2) 2g. Fax 2h. E-mail

(360) 627-4000 [email protected]

1Additional forms may be required for the following permits: If your project may qualify for Department of the Army authorization through a Regional General Permit (RGP), contact the U.S. Army Corps of

Engineers for application information (206) 764-3495. If your project might affect species listed under the Endangered Species Act, you will need to fill out a Specific Project Information Form (SPIF) or

prepare a Biological Evaluation. Forms can be found athttp://www.nws.usace.army.mil/Missions/CivilWorks/Regulatory/PermitGuidebook/EndangeredSpecies.aspx.

Not all cities and counties accept the JARPA for their local Shoreline permits. If you need a Shoreline permit, contact the appropriate city or countygovernment to make sure they accept the JARPA.

2To access an online JARPA form with [help] screens, go to http://www.epermitting.wa.gov/site/alias__resourcecenter/jarpa_jarpa_form/9984/jarpa_form.aspx.

For other help, contact the Governor’s Office for Regulatory Innovation and Assistance at (800) 917-0043 or [email protected].

AGENCY USE ONLY

Date received:

Agency reference #:

Tax Parcel #(s):

2/4/2019Electronic

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Part 3–Authorized Agent or Contact Person authorized to represent the applicant about the project. (Note: Authorized agent(s) must sign 11b of this application.) [help]

3a. Name (Last, First, Middle)

McKinney, Jason

3b. Organization (If applicable)

Naval Facilities Engineering Command Northwest

3c. Mailing Address (Street or PO Box)

1101 Tautog Circle

3d. City, State, Zip

Silverdale, Washington 98315-1101

3e. Phone (1) 3f. Phone (2) 3g. Fax 3h. E-mail

(360) 396-0004 [email protected]

Part 4–Property Owner(s) Contact information for people or organizations owning the property(ies) where the project will occur. Consider both upland and aquatic ownership because the upland owners may not own the adjacent aquatic land. [help]

☒ Same as applicant. (Skip to Part 5.)

☐ Repair or maintenance activities on existing rights-of-way or easements. (Skip to Part 5.)

☐ There are multiple upland property owners. Complete the section below and fill out JARPA Attachment A for each additional property owner.

☐ Your project is on Department of Natural Resources (DNR)-managed aquatic lands. If you don’t know, contact the DNR at (360) 902-1100 to determine aquatic land ownership. If yes, complete JARPA Attachment E to apply for the Aquatic Use Authorization.

4a. Name (Last, First, Middle)

4b. Organization (If applicable)

4c. Mailing Address (Street or PO Box)

4d. City, State, Zip

4e. Phone (1) 4f. Phone (2) 4g. Fax 4h. E-mail

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Part 5–Project Location(s) Identifying information about the property or properties where the project will occur. [help]

☐ There are multiple project locations (e.g. linear projects). Complete the section below and use JARPA Attachment B for each additional project location.

5a. Indicate the type of ownership of the property. (Check all that apply.) [help]

☐ Private

☒ Federal

☐ Publicly owned (state, county, city, special districts like schools, ports, etc.)

☐ Tribal

☐ Department of Natural Resources (DNR) – managed aquatic lands (Complete JARPA Attachment E)

5b. Street Address (Cannot be a PO Box. If there is no address, provide other location information in 5p.) [help]

Wahoo Rd

5c. City, State, Zip (If the project is not in a city or town, provide the name of the nearest city or town.) [help]

Silverdale, Washington 98315

5d. County [help]

Kitsap

5e. Provide the section, township, and range for the project location. [help]

¼ Section Section Township Range

S24 T26N R1W

5f. Provide the latitude and longitude of the project location. [help]

Example: 47.03922 N lat. / -122.89142 W long. (Use decimal degrees - NAD 83)

47.730886 N lat. / -122.742597 W long

5g. List the tax parcel number(s) for the project location. [help]

The local county assessor’s office can provide this information.

Not applicable; all uplands within a mile of the site are owned by the federal government.

5h. Contact information for all adjoining property owners. (If you need more space, use JARPA Attachment C.) [help]

Name Mailing Address Tax Parcel # (if known)

Not applicable

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5i. List all wetlands on or adjacent to the project location. [help]

There is small wetland adjacent to upland portion of project area, by the proposed parking lot (Sheet 1)

5j. List all waterbodies (other than wetlands) on or adjacent to the project location. [help]

Hood Canal

5k. Is any part of the project area within a 100-year floodplain? [help]

☐ Yes ☒ No ☐ Don’t know

5l. Briefly describe the vegetation and habitat conditions on the property. [help]

The overall project area includes both marine waters and upland areas (Sheets 1 through 12). The upland work will not affect wetlands or waters of the U.S. and is not included in this permit application. The marine portion of the project area currently includes the existing Service Pier, wave attenuation screen, and port security barrier (PSB). Some marine vegetation communities, dominated by eelgrass and macroalgae, are present in the project area as shown on Sheet 3 (Carilli, et al 2018). Construction activities will largely be restricted to deep waters (minus 30 feet [9 meters] mean lower low water [MLLW] and deeper). Benthic conditions in deep-water areas of the site consist of silt and fine sediments that provide limited habitat for marine organisms (Carilli, et al 2018). Eelgrass and macroalgae will be identified in the contract drawings and specifications. Temporary construction activities in those areas, such as anchoring, long-term shading of the areas by construction vessels, or any activities that could impact the eelgrass, will not be allowed. The upland project area includes lowland conifer forest, a former homestead and orchard, and a small wetland. The project has been designed to avoid all wetlands.

5m. Describe how the property is currently used. [help]

The project site is located adjacent to the eastern shoreline of Hood Canal at Naval Base (NAVBASE) Kitsap Bangor. The project area is used for U.S. Department of the Navy (Navy) operations and vessel maintenance and serves as a home base for the submarine fleet.

5n. Describe how the adjacent properties are currently used. [help]

NAVBASE Kitsap Bangor is surrounded by lands zoned rural residential by Kitsap County to the north, south, and east borders and Hood Canal to the west.

5o. Describe the structures (above and below ground) on the property, including their purpose(s) and current condition. [help]

The existing Service Pier is a pile supported timber and concrete structure which is used to provide berthing and engineering support for submarines. In addition, the existing PSB, wave attenuation screen, and a portion of the existing Service Pier are located within the footprint of the proposed Service Pier extension. The PSB and wave attenuation screen would be relocated as part of the proposed project. All structures are in good condition.

5p. Provide driving directions from the closest highway to the project location, and attach a map. [help]

NAVBASE Kitsap Bangor is a secured facility, and visitors must have proper clearance to access the site. See Sheet 1 for a map of the Project location and site maps.

From WA-3, exit at WA-308/Keyport toward Bangor; merge onto NW Luoto Rd, this will lead to the entrance gate at NAVBASE Kitsap Bangor.

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Part 6–Project Description

6a. Briefly summarize the overall project. You can provide more detail in 6b. [help]

The proposed project would construct an extension to the existing Service Pier at NAVBASE Kitsap Bangor, and associated support facilities on the pier and an upland site. The Service Pier Extension would provide two additional berths for maintenance of existing homeported and visiting submarines. The associated support facilities would provide logistical support for the Navy’s nuclear-powered attack submarine (SSN) research, development, test, and evaluation hub, which is currently located on NAVBASE Kitsap Bangor (Navy, 2016; 2018a).

The project components are shown on Sheet 3 and generally include: Proposed Service Pier Extension, 68-feet-wide by 520-feet-long, capable of double-breasted berthing

configuration for submarine maintenance Berthing and mooring for two additional SEAWOLF-class submarines Mooring dolphin Floating camels Small craft floats and relocated small craft float Fender systems Crane pad Removal of existing wave screen and a proposed relocated wave screen Relocation of the PSB and associated anchoring with a new connection point Extension of utilities Compressor building

The overall project also includes upland construction activities that will not affect wetlands or other waters of the U.S. These activities include construction staging and temporary laydown area, support buildings, roads, and parking lots that will be used in conjunction with the Service Pier.

6b. Describe the purpose of the project and why you want or need to perform it. [help]

The project’s purpose is to provide additional maintenance berthing capacity and improve associated support facilities for existing homeported and visiting submarines at NAVBASE Kitsap Bangor and is needed to:

Provide alternative opportunities for berthing to mitigate restrictions at NAVBASE Kitsap Bremerton on navigating SEAWOLF Class submarines through Rich Passage under certain tidal conditions.

Improve long-term operational effectiveness for the three SEAWOLF Class submarines at NAVBASE Kitsap Bangor.

Provide berthing and logistical support for SEAWOLF, LOS ANGELES, and VIRGINIA submarine classes at the Navy’s submarine research, development, test, and evaluation hub, which is currently located on NAVBASE Kitsap Bangor.

Improve submarine crew training and readiness through co-location of command functions at NAVBASE Kitsap Bangor submarine training center.

The expanded berthing and supporting facilities would address a number of infrastructure deficiencies, such as inadequate support services facilities and inadequate berthing space.

6c. Indicate the project category. (Check all that apply) [help]

☐ Commercial ☐ Residential ☒ Institutional ☐ Transportation ☐ Recreational

☐ Maintenance ☐ Environmental Enhancement

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6d. Indicate the major elements of your project. (Check all that apply) [help]

☐ Aquaculture

☐ Bank Stabilization

☐ Boat House

☐ Boat Launch

☐ Boat Lift

☐ Bridge

☐ Bulkhead

☐ Buoy

☐ Channel Modification

☐ Culvert

☐ Dam / Weir

☐ Dike / Levee / Jetty

☐ Ditch

☒ Dock / Pier

☐ Dredging

☐ Fence

☐ Ferry Terminal

☐ Fishway

☒ Float

☐ Floating Home

☐ Geotechnical Survey

☐ Land Clearing

☐ Marina / Moorage

☐ Mining

☐ Outfall Structure

☒ Piling/Dolphin

☐ Raft

☐ Retaining Wall (upland)

☐ Road

☐ Scientific Measurement Device

☐ Stairs

☐ Stormwater facility

☐ Swimming Pool

☐ Utility Line

☒ Other: Port Security Barrier

6e. Describe how you plan to construct each project element checked in 6d. Include specific construction methods and equipment to be used. [help] Identify where each element will occur in relation to the nearest waterbody.

Indicate which activities are within the 100-year floodplain.

The proposed project will extend the existing Service Pier, demolish the existing wave screen, construct a new wave screen in a different location, and relocate the existing PSB. These activities are described in detail below.

Service Pier Extension

The Service Pier Extension Project consists of a new 68-foot-wide by 520-foot-long (38,924 total square feet) addition to the southern end of the existing pier (Sheet 3). The proposed extension is oriented at an angle from the existing pier such that it runs approximately perpendicular to the slope of the mudline at a water depth of minus 30 feet MLLW to avoid impacts to shallow-water habitat. The structural configuration of the pier extension will closely match that of the existing pier while conforming to current codes and design standards. The pier will be constructed of steel pipe piles supporting cast-in-place pile caps, precast concrete deck panels covered by cast-in-place concrete. Continuity with the existing pier will require demolition of the southern end of the existing pier and the existing wave screen.

Construction of the pier extension will require the use of water-borne equipment, including floating derricks, barges, tug boats, and work skiffs. A crane similar to a Demag Model 2500 (420-ton capacity) equipped with an APE Model 600 Tandem Vibratory hammer, pile driving leads, and a D-100 diesel impact hammer will be equipped to one barge. The Demag Model 2500 (or similar) standard crane boom, proposed for this project, is 236 feet long and can be safely operated for a reach across the entire 68-foot width of the proposed SPE from the deep water (north) side of the pier, to place piles and elements of the wave screen. The original allowable work area consisted of a 100’ buffer around the entire proposed pier to allow work crews to maneuver around the entire work project. However, due to limited water depth and the potential to affect vegetated marine habitat between the shoreline and the pier extension, all large construction equipment (such as floating derricks and barges) is excluded from the south side and instead will remain on the north (deep water) side of the pier extension. The construction corridor around the pier will extend outward 100 feet along the north and west sides of the pier. The construction corridor will also extend 20 feet landward along the south side of the pier to include all removed, relocated and new structures (e.g., new waves screen, new and relocated floats, new metal utility rack, and fender system). No construction barges or other floating equipment would be allowed on the south side (nearshore) of the pier with the exception of small metal skiffs equipped with outboard motors used to ferry workers around the construction site.

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This approach reduces the potential direct, temporary construction disturbance area from a 3.9-acre area to a 2.12-acre area and would reduce direct, temporary impacts to marine vegetation communities (green macroalgae and eelgrass) that are present on the south side of the pier. Further, construction activities would largely occur in deep waters (30 feet below mean lower low water and deeper), beyond the depth where marine vegetation occurs. The area of direct, temporary construction-related impacts would consist of the proposed SPE footprint plus the areas outside of that footprint where existing piles would be removed and permanent and temporary piles would be driven, areas where existing structures would be removed/demolished as well as a 100-foot-wide corridor along the north and west side of the pier where barges would be stationed and tugboats would maneuver the barges during construction. The temporary construction impacts zone also includes all removed, relocated and new structures (e.g., new waves screen, new and relocated floats, new metal utility rack, and fender system) on/adjacent to the south side of the pier, and extends 20 feet off the south side of the pier and those structures.

Water Quality Monitoring required under Section 401 of the Clean Water Act would be performed to ensure compliance with current water quality and antidegradation standards for marine waters as designated under Washington Administrative Code 173-201A.

A total of 243 permanent piles will be installed to support the pier, berthing system, small craft mooring, PSB, and wave attenuation screen. A total of 27 temporary piles will also be installed during construction to facilitate construction. Cast-in-place concrete pile caps will be placed above and extend below mean higher high water (MHHW) to secure the superstructure to the piles. Pile installation will be completed using the following methods:

Pile Type Pile Size/ Material

Pile Quantity

Water Depth Installation Method

Noise Attenuation

Temporary Piles

Falsework Pile 36” Steel Pipe 27 >-30’ MLLW Vibratory with Potential Impact Proofing

NA

Permanent Piles

Structural Pile for Pier, Small Craft Mooring and Dolphins

36” Steel Pipe 176 >-30’ MLLW Vibratory with impact proofing

Bubble curtains during impact driving

Structural Pile for Wave Screen

24” Steel Pipe 11 >-30’ MLLW Vibratory with impact proofing

Bubble curtains during impact driving

Fender Pile 18” Concrete 56 >-30’ MLLW Impact NA

Pile Removal

From Existing Wave Screen and Pier

15” to 18” Creosote-Treated Timber

31 >-30’ MLLW Vibratory NA

All steel pipe piles will initially be driven using a vibratory hammer to minimize underwater noise levels during construction. Based on previous experience from the construction of Explosives Handling Wharf No. 2, vibratory driving may not be possible in all areas because of the underlying geology (glacial till/outwash and presence of erratics). If vibratory driving is not sufficient to drive a steel pipe pile to design depth, impact driving methods will be used to drive piles to tip elevation. Impact driving methods will also be used to proof steel pipe piles and will occur in limited duration. Up to one-quarter of the piles will be proofed with an impact hammer following vibratory installation. The total number of strikes per day will be limited to minimize noise impacts. BMPs detailed in Attachment 1 will be employed to reduce impacts by noise generated from pile driving

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activities.

Construction Sequencing

Floating equipment (barges and cranes) will be used to erect temporary formwork. Concrete pile caps will be poured using cast-in-place methods. Precast concrete deck panels will be placed on top of the caps after the concrete has cured. Cast-in-place concrete will be poured between the deck panels and cast- in-place concrete will be poured on top of the deck panels to lock them in and form the pier extension surface. All concrete forms will be constructed so that wet concrete does not spill into the water.

A fender system consisting of precast, prestressed concrete fender piles with steel chocks and wales backed by rubber fenders will also be installed along the faces of the pier extension. Concrete fender piles will be impact-driven only.

Two floating camels fitted with cleats and power booms will be installed for submarine mooring. Floating camels will be floated into position and attached to steel pipe guide piles that are located along the waterside face and attached to the pier extension. These guide piles will be installed in a manner similar to piles supporting the pier extension. Brows from the pier extension will provide access to the floating camels.

Small craft floats fitted with cleats, including one reused existing float, will be provided along the landside face of the pier extension, with steel pipe guide piles and brows from the existing pier and pier extension (Sheet 3). Small craft floats will be floated into position and attached to the guide piles.

Mooring hardware consisting of 100-ton double bitts will be distributed along the waterside face of the pier extension. Depending on location, cleats with either a 10-ton or 20-ton capacity will be provided along other faces of the pier extension, on the floating camels, and along the small craft floats. Specific construction techniques are discussed by element below:

Demolition

Pier and Fender System

An existing 104 feet by 30 feet pier and fender system, including 22 support piles will be removed to allow for construction of the proposed pier extension (Sheet 2). The contractor will mobilize prior to the in-water work window to remove portions of the pier and decking above MHHW. No work will occur below MHHW and BMPs will be employed to isolated all construction related debris from entering waters of the U.S. Demolition would occur using selective saw cutting and a crane mounted barge to remove the large concrete pieces. Once the in-water work window begins, a crane mounted derrick barge with a vibratory hammer will then be used to remove the existing piles. All work will occur from the west (deep-water side) of the existing pier or from the existing pier itself. All material will be removed and hauled offsite for disposal.

Wave Attenuation Screen

The existing wave attenuation screen (including piles) will be removed in its entirety (Sheet 2). Construction equipment used to remove the wave screen will include floating equipment, such as derricks, support barges, and work skiffs. The existing screen will be removed from existing timber piles using hand tools and hoisted onto a support barge via a barge-mounted crane located in the deep water (north) portion of the temporary work area. Waste material will then be disposed in an approved upland location. A total of 9 existing creosote-treated timber piles will be removed by wrapping the piles with a cable or chain and pulling them or by using vibratory extraction. Piles will be cut at the mudline if splitting or breakage occurs during extraction. A floating boom will be used to contain and collect debris during this pile removal. All creosote treated piles will be disposed in an approved upland facility. All construction equipment will be located on the north (deep water) side of the proposed pier area.

Port Security Barrier Relocation

The existing PSB system is made up of several floating PSB units connected together. Each PSB unit is 50 feet long and supports an 8-foot-high fence on a metal frame. Each PSB unit is supported on three

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pontoons. Each pontoon is 42 inches in diameter; the center pontoon is 18 feet long and each end pontoon is 6 feet long. Up to 540 feet of the existing barrier and associated anchoring would be removed. A portion of the existing PSB and mooring system would be repositioned to connect to a mooring pile at the southeast corner of the Service Pier Extension. The PSB is currently secured by a mooring system using three anchors spaced at approximately 120 degrees apart. One anchor is a 10-ton anchor, while the other two are each 2-ton clump weights. The project will remove four (4) 10-ton anchors and eight (8) 2-ton clump weights. A derrick with crane and tugboat would be used to pull existing anchors. The crane will attach to the moorage chain and hoist it onto the deck of the derrick. The tug would then reposition the PSB to the new anchor point at the pier extension described further below and shown on Sheet 3. Beside the anchors proposed for removal (discussed above), no new or existing anchors or other elements of the PSB will be placed back onto the seafloor.

Small Craft Float

An existing 104 feet by 30-feet small craft float will be detached from the existing pier and relocated to the new pier extension. Hand tools will be used to remove structural hardware and free the float from the dock. The float will be secured to the existing Service Pier until the pier extension is built and ready to accept the existing float.

New Pier Facilities

Pier and Decking

Construction of the new pier extension will likely start with the piles closest to the existing pier structure. The piles will be drive as described in Section 6e. The contractor could elect to drive piles with equipment positioned in the 100-foot temporary impact area located on the north side of the pier or the equipment will be positioned within the future footprint of the pier and move from the north-east to the south-west then completing work with equipment in the 100-foot temporary impact area located on the south-west end of the proposed pier. Temporary wooden construction forms and supports will be constructed to contain cast in place concrete that will form the pile caps and plugs. The wooden forms will be sealed to prevent concrete from entering waters of the U.S. Concrete will be placed into a large “bucket” and hoisted by crane into position over the forms, where the concrete will be placed by hand. Once the concrete has set, the forms will be removed by hand and the form material will be hauled off site for disposal.

Once the piles and pile caps are installed, pre-cast concrete panel decking will be installed. The panels will be hoisted by a derrick mounted crane operated from the deep water portion of the temporary work area and placed on the pile caps. The deck panels will be secured to the pile caps using metal hardware.

After the pier extension is completed, facilities on the pier will be constructed. Construction equipment will be driven onto the pier from land. Floating equipment may also be used for support as necessary.

Support Buildings

Two existing buildings on the existing pier, B7042 and B7112 will be modified. No exterior modifications will occur to these existing building. However, minor interior construction (drywall repair, electrical, paint) will occur to accommodate a new compressor. An existing compressor building on the existing Service Pier will be demolished using mechanical and hand tools. Debris will be placed into containers and hauled offsite for disposal. A new compressor building will be built on the new pier extension. The new building will be located at the south end of the extension and is 2,100 square feet.

Utility Trench

A full-length trench will be provided at the waterside (north) face of the pier extension. The utility trench will be installed below the surface of the pier to accommodate electrical power cables and other utilities. The utilities will be accessible through removable trench cover lids. Both trenches will connect at the far end of the pier extension to provide looped systems that ensure the availability of utilities in the event of an isolated discontinuity. Three power mounds will be included along the face of the pier, two for the submarines and one

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for repair operations. Utilities will be extended from the existing Service Pier and associated upland connections. A metal rack system will also be installed on the landside (south) face of the pier to house mechanical utilities (Sheet 3).

Harbor Crane

A fixed harbor crane will be built into the pier extension on the (north) waterside face with adequate reach and capacity to service two nested submarines (Sheet 3). A cast-in-place concrete foundation will be constructed on the pier to support the crane. A portion of the foundation will extend 9 feet, 9 inches beyond the edge of the pier for a length of 25 feet. Two 36-inch steel piles will be placed to support the extended foundation (Sheet 7).

Mooring Dolphin

A new mooring dolphin would be installed west of the Service Pier Extension to provide a mooring point. Construction is expected to require floating equipment, such as derricks, supply barge, a tugboat, and work skiffs.

The dolphin will consist of six closely spaced 36-inch-diameter steel pipe piles. Piles will be driven by vibratory methods and proofed with an impact hammer as described previously. Once the piles are driven, a 15-foot by 15-foot, cast-in-place concrete pile cap will be constructed on top of the piles to create a flat space. Mooring points will be constructed on top of the pile cap. The dolphin will be connected to the pier extension via a metal grated catwalk.

Wave Attenuation Screen

A new wave attenuation screen will be constructed on the south (shore) side of the new pier (Sheet 11). The wave attenuation screen will be 200 feet long and 27 feet high. The wave screen will consist of concrete or steel panels suspended (from +20 feet [top of panel] to -7 feet [bottom of panel] MLLW) above the seafloor on steel piles. 11 steel 24-inch-diameter piles will be driven using a vibratory hammer from a derrick barrage moored on the north (deep water) side of the proposed pier. Panels will be hoisted from a derrick positioned on the north (deep-water) side of the proposed pier extension. The panels will be suspended by the crane until workers attach the panels to the piles using hand tools.

6f. What are the anticipated start and end dates for project construction? (Month/Year) [help]

If the project will be constructed in phases or stages, use JARPA Attachment D to list the start and end dates of each phase or stage.

Start Date: Spring 2020 End Date: October 2021 ☐ See JARPA Attachment D

6g. Fair market value of the project, including materials, labor, machine rentals, etc. [help]

$116,000,000 (Total project – design to construction cost)

6h. Will any portion of the project receive federal funding? [help]

If yes, list each agency providing funds.

☒ Yes ☐ No ☐ Don’t know

This project is funded via a military construction appropriation.

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Part 7–Wetlands: Impacts and Mitigation

☒ Check here if there are wetlands or wetland buffers on or adjacent to the project area. (If there are none, skip to Part 8.) [help]

7a. Describe how the project has been designed to avoid and minimize adverse impacts to wetlands. [help]

☐ Not applicable

A Category IV wetland is located adjacent to the Project area (Anchor QEA 2013). However, this wetland will not be affected by Project activities.

7b. Will the project impact wetlands? [help]

☐ Yes ☒ No ☐ Don’t know

7c. Will the project impact wetland buffers? [help]

☐ Yes ☒ No ☐ Don’t know

7d. Has a wetland delineation report been prepared? [help]

If Yes, submit the report, including data sheets, with the JARPA package.

☒ Yes ☐ No

7e. Have the wetlands been rated using the Western Washington or Eastern Washington Wetland Rating System? [help] If Yes, submit the wetland rating forms and figures with the JARPA package.

☒ Yes ☐ No ☐ Don’t know

7f. Have you prepared a mitigation plan to compensate for any adverse impacts to wetlands? [help]

If Yes, submit the plan with the JARPA package and answer 7g.

If No, or Not applicable, explain below why a mitigation plan should not be required.

☐ Yes ☒ No ☐ Don’t know

Impacts to the wetland described in Section 7a will be avoided, therefore no mitigation is required.

7g. Summarize what the mitigation plan is meant to accomplish, and describe how a watershed approach was used to design the plan. [help]

Not applicable.

7h. Use the table below to list the type and rating of each wetland impacted, the extent and duration of the impact, and the type and amount of mitigation proposed. Or if you are submitting a mitigation plan with a similar table, you can state (below) where we can find this information in the plan. [help]

Activity (fill, drain, excavate,

flood, etc.)

Wetland Name1

Wetland type and

rating category2

Impact area (sq.

ft. or Acres)

Duration of impact3

Proposed mitigation

type4

Wetland mitigation area

(sq. ft. or acres)

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1 If no official name for the wetland exists, create a unique name (such as “Wetland 1”). The name should be consistent with other project documents, such as a wetland delineation report.

2 Ecology wetland category based on current Western Washington or Eastern Washington Wetland Rating System. Provide the wetland rating forms with the JARPA package.

3 Indicate the days, months or years the wetland will be measurably impacted by the activity. Enter “permanent” if applicable. 4 Creation (C), Re-establishment/Rehabilitation (R), Enhancement (E), Preservation (P), Mitigation Bank/In-lieu fee (B)

Page number(s) for similar information in the mitigation plan, if available:

7i. For all filling activities identified in 7h, describe the source and nature of the fill material, the amount in cubic yards that will be used, and how and where it will be placed into the wetland. [help]

Not applicable.

7j. For all excavating activities identified in 7h, describe the excavation method, type and amount of material in cubic yards you will remove, and where the material will be disposed. [help]

Not applicable.

Part 8–Waterbodies (other than wetlands): Impacts and Mitigation

In Part 8, “waterbodies” refers to non-wetland waterbodies. (See Part 7 for information related to wetlands.) [help]

☐ Check here if there are waterbodies on or adjacent to the project area. (If there are none, skip to Part 9.)

8a. Describe how the project is designed to avoid and minimize adverse impacts to the aquatic environment. [help]

☐ Not applicable

The Navy has avoided and minimized impacts to the extent practicable by designing the project with the minimum amount of structure necessary to achieve the purpose of the project. The pier is located in deep water (greater than -30’ MLLW) in order to avoid impacts to the nearshore habitat. In addition, temporary work areas were reviewed and reduced within the nearshore environment. The contractor will be required to moor all work barges and other vessels either within the footprint of the proposed pier or within the 100-foot designated work zone to the north and west of the proposed pier to avoid nearshore habitat.

The Navy has developed Mitigation Action Plan as part of the Supplemental Environmental Impact Statement prepared for the proposed construction and operation of the Service Pier Extension. The Mitigation Action Plan (included as Attachment 1) includes several measures, including current practices, best management practices, and mitigation measures that will be applied to the project to avoid, reduce, and mitigate the effects from this action.

In addition to the measures outlined in the Mitigation Action Plan, a survey for eelgrass and macro algae was conducted in June and July of 2018 (Carilli, et al 2018). The surveys confirmed the location of eelgrass beds and added a detailed survey of macroalgae (Sheet 3).

8b. Will your project impact a waterbody or the area around a waterbody? [help]

☒ Yes ☐ No

8c. Have you prepared a mitigation plan to compensate for the project’s adverse impacts to non-wetland waterbodies? [help]

If Yes, submit the plan with the JARPA package and answer 8d.

If No, or Not applicable, explain below why a mitigation plan should not be required.

☒ Yes ☐ No ☐ Don’t know

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The Navy has prepared an In-Lieu Fee Use (ILF) Plan in order to determine amount of and to facilitate the purchase of mitigation credits from the Hood Canal Coordinating Council (HCCC) ILF Program to provide compensatory mitigation for unavoidable impacts to aquatic resources. The HCCC ILF Program instrument was approved in 2012 by the U. S. Army Corps of Engineers (USACE) and includes a marine service area throughout Hood Canal, including NAVBASE Kitsap Bangor. The ILF Use Plan will document the project impacts articulated as debits and identify the credits required to achieve no-net loss of habitat function. Upon agreement of the debits and credits by the regulatory agencies, and review of the draft ILF Use Plan by the HCCC Interagency Review Team (IRT), the ILF Use Plan will be finalized and if the HCCC Board of Governors agrees to sell the credits, the Navy will purchase credits from the HCCC ILF Program. A statement of sale will be provided to the USACE.

8d. Summarize what the mitigation plan is meant to accomplish. Describe how a watershed approach was used to design the plan.

If you already completed 7g you do not need to restate your answer here. [help]

The Navy’s purchase of mitigations credits through the HCCC ILF program will provide compensation for unavoidable impacts to aquatic resources as a result of constructing and operating the SPE project. Based on the project activities related to construction and operation of the proposed pier, the Navy anticipates impacts to the benthic and macroalgae communities. The Navy recently conducted studies focused on these habitat types including; the Under-Pier and Pile-Benthos Interface Visual Sediment Survey Report (Sediment Survey) (Navy 2018b) and Service Pier Extension Eelgrass and Macroalgae Report (Carilli, et al 2018).

Benthic Community Effects

The Sediment Survey was conducted to investigate: 1) the surface sediments, by comparing top-down visual investigations of the benthos across six study areas; 2) potential effects from overwater and in-water structures, including shell debris that may have fallen from over-water structures or in-water piles; and 3) the potential scour that has occurred as a result of the strong tides and currents in the vicinity of the piles.

The Sediment Survey findings confirms the previous information that permanent impacts to the benthic community will result from the placement of piles. There will be loss of benthic habitat due to displacement by piles. In addition, the Sediment Survey confirmed that scour and deposition of shell hash occurs around existing piles. However, scour and deposition does not occur at all piles and was not observed to exceed beyond a two-foot radius around each pile. Therefore, a conservative approach is to assume for every pile, an impact area includes the pile footprint, plus an additional two-foot radius around each pile to capture impacts from scour and shell hash deposition.

The Sediment Survey also found that the benthic community, which is largely dependent on sediment characteristics such as grain size and chemistry, is likely to experience only minor changes related to the changes in sediment composition due to scour. Fine-grained sediments were found to accumulate shoreward of the existing wave screen. Although these effects likely result in a change in the composition of epibenthic and infaunal communities, observations of crabs and sea stars in these habitats have indicated that these effects did not result in a loss of function, except within the actual pile footprint. Regardless, the Navy proposes to mitigate for the full impact area (foot print, plus 2-foot diameter) around each pile. Changes in ambient lighting due to overwater cover are expected to have a negligible effect to the benthic community based on observations of the 2005 under-pier locations and reference locations. This conclusion was also shared by the National Marine Fisheries Service (NMFS) in their Biological Opinion (BO) issued on 5 July 2018, in which NMFS stated “Impacts due to shading of benthic habitat are unlikely due to the depth of the water at the pier site”. Therefore, impacts to the benthic community based on shading is unlikely.

Based on the discussion above, anticipated temporary impacts to the benthic environment are detailed in Table 1 and permanent impacts are shown in Table 2 below. These impacts include both placement of new piles, but also removal of 31 existing creosote treated piles. The same impact area discussed above

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ORIA-16-011 Page 14 of 22

(footprint, plus 2-foot diameter) is applied to the pile removal, since the benthic environment around the piles to be removed will no longer be subject to scour or shell hash deposition.

Table 1. Temporary Impacts

Non-Vegetated (ft2)

Vegetated

(ft2)

North work area (100 feet) 54,000 0.0

West work area (100 feet) 18,800 0.0

South work area (20 feet) 44,253 5,496

PSB Anchor Removal 314 0.0

Total 117,367 5,496

Table 2. Permanent Benthic Habitat Effects

Pile Type Pile Size Pile Quantity Pile Impact Area (ft2)

Pile + Scour Impact (ft2)

Existing Piles to be Removed

Wood; Creosote Treated

15” 22 28 N/A

Wood; Creosote Treated

18” 9 16 N/A

Total Removal 44 N/A

Temporary Piles

Falsework Pile 36” 27 192 1923

Permanent Piles

Structural Pile for Pier and Wave Screen Attachment

36” 176 1,245 6,775

Structural Pile for Small Craft Mooring and Dolphins

24” 11 35 312

Fender Pile 18” 56 99 1,330

Total Placement 1,383 8,417

Total Permanent Pile Impact Area: 8,373 4sf. ft.Note:

Impact areas rounded up to nearest whole number

3 Temporary piles will be removed and area of disturbance is expected to revert to pre-project conditions. Therefore, no impacts will result from scour. 4 Total Impact Area is equal to 8,417 sq. ft. of impact, minus the 44 sq. ft. of creosote treated pile removal for a total of 8,373 sq. ft. of impacts

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Additional benthic habitat effects will result from the removal of the PSB mooring anchors. Four sets of mooring anchor consisting of one 10-ton anchor and two (2) 2-ton clump weights will be removed resulting in the access to 314 square feet of additional benthic habitat. Eelgrass and Macroalgae Effects Project activities are also anticipated to have a minor effect on macroalgae. After discussions with the USACE, the Navy provided an intensive survey for eelgrass and macroalgae to account for the potential reduction in habitat function. The results of the survey confirmed the continued presence of two eelgrass beds previously surveyed in 2012 by Anchor QEA. Both eelgrass beds are located within the nearshore environment and outside of the project footprint and work zone, indicating the Project will likely avoid direct, construction-related impacts to these resources. Three macroalgae beds (referenced as Main Bed, Patch 1 and Patch 2) were documented during the surveys. The Main Bed is the largest continuous bed located from the nearshore out to the southern edge of the Project footprint. This bed contains overall macroalgae densities that fall within Braun-Blanquet cover class #2. On average, the macroalgae bed surveyed contains 16.7% macroalgae, with minimum and maximum cover within individual quadrats ranging from 6-75%. Most of this was understory kelp (notably Laminaria sp.) at an average of 12.9% cover, followed by Sarcodiotheca gaudichaudii and Ulva sp. at 1.7 and 1.6%, respectively, and Sargassum muticum at 0.5%. There was also an unknown small alga, likely a red, that covered an average of 0.05% of the bed (Carilli, et al 2018). Two smaller beds were located within the temporary work zone. Each contained approximately 60 and 71% average macroalgae cover (Braun-Blanquet cover class #4), mostly kelp and Ulva spp., respectively; however, this value comes from only two quadrats in one the first and one quadrat in the second bed, because they were so small (Carilli, et al 2018). The Main Bed will be affected by both the temporary work zone as well as the placement of overwater cover. The two small beds (Patch 1 and Patch 2) will only be affected by the temporary work zone. Table 3 below provides additional information on each macroalgae bed, including densities and impact quantities.

Table 3 – Macroalgae Impacts

Deepwater Macroalgae Bed

Average Percent Cover

Area (ft2)

Permanent Project Footprint

Temporary Work Area

Main bed 16.7% 104 5,430

Patch 1 60% 0 33

Patch 2 71% 0 33

Total NA 104 5,496

It is expected there will be no additional direct impacts to either the benthic habitat or macroalgae beyond those discussed above because all work equipment, with the exception to small skiffs will be limited to within the footprint of the pier and the work zones on the north and west sides of the proposed pier . NMFS found that in-water construction activities including pile removal and pile placement may temporarily elevate turbidity levels, which could have an effect on both benthic habitat or macroalgae. However, NMFS found these effects will be “localized, short-term and similar to the variations that occur normally within the environmental baseline of the marine nearshore—which is regularly subject to strong winds and currents that generate suspended sediments” (NMFS 2018).

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Further, according to NMFS “…the predominately coarse grained sediments that occur in most areas of the project site are more resistant to resuspension and have a higher settling speed than fine-grained sediments. Resuspension of sediments will be limited to a small area around each pile” (NMFS 2018). The Navy will include BMPs discussed in Attachment 1 to further reduce the potential effects from sediment resuspension due to construction activities. The Navy will also conduct water quality monitor to ensure compliance with current Washington State water quality standards administered by the Washington State Department of Ecology’s 401 Water Quality Program. These water quality standards are designed to protect the marine environment. With these considerations; the direct effects from construction of the project are expected minor, localized and relatively short in duration. Complete project impacts for which the Navy will provide compensatory mitigation are described further in Section 8e below.

8e. Summarize impact(s) to each waterbody in the table below. [help]

Activity (clear, dredge, fill, pile drive, etc.)

Waterbody name1

Impact location2

Duration of impact3

Area (sq. ft.) of waterbody directly affected

Creosote Treated Pile Removal

Hood Canal

Benthic Permanent 44 (reduction)

PSB Anchor Removal Hood Canal

Benthic Permanent 314 (reduction)

Service Pier Extension (including all features/elements fixed to the pier such as floating camels and small craft floats).

Hood Canal

Overwater - Macroalgae

Permanent 104

Service Pier Extension Pile

Placement

Hood Canal

Benthic Permanent 8,417

Temporary Construction Zone

Hood Canal

Overwater and Benthic

Temporary

117,367

Total Temporary Impact 117,367

Total Permanent Impact 8,059 1 If no official name for the waterbody exists, create a unique name (such as “Stream 1”) The name should be consistent with other documents

provided. 2 Indicate whether the impact will occur in or adjacent to the waterbody. If adjacent, provide the distance between the impact and the waterbody and

indicate whether the impact will occur within the 96100-year flood plain. 3 Indicate the days, months or years the waterbody will be measurably impacted by the work. Enter “permanent” if applicable. 8f. For all activities identified in 8e, describe the source and nature of the fill material, amount (in cubic yards)

you will use, and how and where it will be placed into the waterbody. [help]

Not applicable

8g. For all excavating or dredging activities identified in 8e, describe the method for excavating or dredging, type and amount of material you will remove, and where the material will be disposed. [help]

Not applicable

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Part 9–Additional Information Any additional information you can provide helps the reviewer(s) understand your project. Complete as much of this section as you can. It is ok if you cannot answer a question.

9a. If you have already worked with any government agencies on this project, list them below. [help]

Agency Name Contact Name Phone Most Recent Date of Contact

USACE Frank Nichols (206) 764-6182 January 3, 2019

USFWS Jim Muck (360) 753-9586 May 19, 2017

NMFS Lisa Abernathy (206) 526-4742 July 31, 2018

Ecology Rebekah Padgett (425) 649-7129 November 8, 2018

9b. Are any of the wetlands or waterbodies identified in Part 7 or Part 8 of this JARPA on the Washington Department of Ecology’s 303(d) List? [help] If Yes, list the parameter(s) below.

If you don’t know, use Washington Department of Ecology’s Water Quality Assessment tools at: http://www.ecy.wa.gov/programs/wq/303d/.

☒ Yes ☐ No

North Hood Canal is on Ecology’s 303(d) list for low dissolved oxygen (Ecology 2016).

9c. What U.S. Geological Survey Hydrological Unit Code (HUC) is the project in? [help]

Go to http://cfpub.epa.gov/surf/locate/index.cfm to help identify the HUC.

Hood Canal - 17110018

9d. What Water Resource Inventory Area Number (WRIA #) is the project in? [help]

Go to http://www.ecy.wa.gov/water/wria/index.html to find the WRIA #.

WRIA 15 - Kitsap

9e. Will the in-water construction work comply with the State of Washington water quality standards for turbidity? [help]

Go to http://www.ecy.wa.gov/programs/wq/swqs/criteria.html for the standards.

☒ Yes ☐ No ☐ Not applicable

9f. If the project is within the jurisdiction of the Shoreline Management Act, what is the local shoreline environment designation? [help] If you don’t know, contact the local planning department.

For more information, go to: http://www.ecy.wa.gov/programs/sea/sma/laws_rules/173-26/211_designations.html.

☐ Urban ☐ Natural ☐ Aquatic ☐ Conservancy ☒ Other: Federal Lands

9g. What is the Washington Department of Natural Resources Water Type? [help]

Go to http://www.dnr.wa.gov/forest-practices-water-typing for the Forest Practices Water Typing System.

☒ Shoreline ☐ Fish ☐ Non-Fish Perennial ☐ Non-Fish Seasonal

9h. Will this project be designed to meet the Washington Department of Ecology’s most current stormwater manual? [help]

If No, provide the name of the manual your project is designed to meet.

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☒ Yes ☐ No

Name of manual: Name of manual: 2012 Stormwater Management Manual for Western Washington

9i. Does the project site have known contaminated sediment? [help] If Yes, please describe below.

☐ Yes ☒ No

9j. If you know what the property was used for in the past, describe below. [help]

The site has been a military installation since 1941 when the government began purchasing land from area residents (Navy, 2011). The construction of the base was completed by 1944. The purpose of the base was for ammunition loading of Navy ships supporting the Pacific theater in World War II (WWII). Ammunition handling was Bangor’s chief mission through WWII, the Korean Conflict, and the Vietnam Era. In the 1970’s the installation was modernized for use as a TRIDENT submarine base.

9k. Has a cultural resource (archaeological) survey been performed on the project area? [help]

If Yes, attach it to your JARPA package.

☒ Yes ☐ No

The Navy has completed Section 106 consultation with the Washington Department of Archaeology and Historic Preservation (DAHP).

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9l. Name each species listed under the federal Endangered Species Act that occurs in the vicinity of the project area or might be affected by the proposed work. [help]

ESA consultation is complete with NMFS issuing a Biological Opinion on July 5, 2018. U.S. Fish and Wildlife Concurred with the project on March 4, 2016 .

Species

Scientific Name

Species Effect Conclusion

Critical Habitat Effect Conclusion

Puget Sound Evolutionarily Significant Unit (ESU) Chinook

Oncorhynchus tshawytscha

May affect, likely to adversely affect

May affect, not likely to adversely affect

Hood Canal summer- run ESU chum

Oncorhynchus keta

May affect, likely to adversely affect

May affect, not likely to adversely affect

Puget Sound Distinct Population Segment (DPS) steelhead

Oncorhynchus mykiss

May affect, likely to adversely affect Not Designated

Puget Sound/Georgia Basin DPS of bocaccio

Sebastes paucispinis

May affect, likely to adversely affect

May affect, not likely to adversely affect

Puget Sound/Georgia Basin DPS of yelloweye rockfish

Sebastes ruberrimus

May affect, likely to adversely affect

May affect, not likely to adversely affect

Mexico DPS humpback whale

Megaptera novaeangliae

May affect, not likely to adversely affect Not designated

Central America DPS humpback whale

Megaptera novaeangliae

May affect, not likely to adversely affect Not designated

ESA consultation with the USFWS is complete, with the USFWS finding that impacts to bull trout would be insignificant and impacts to the marbled murrelet would be discountable, with no additional conservation recommendations (USFWS, 2017).

Species Scientific Name Species Effect Conclusion

Critical Habitat Effect Conclusion

Marbled Murrelet Brachyramphus marmoratus

May affect, not likely to adversely affect

No effect.

Bull Trout Salvelinus confluentus

May affect, not likely to adversely affect No effect

9m. Name each species or habitat on the Washington Department of Fish and Wildlife’s Priority Habitats and Species List that might be affected by the proposed work. [help]

Not applicable.

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Part 10–SEPA Compliance and Permits Use the resources and checklist below to identify the permits you are applying for.

Online Project Questionnaire at http://apps.oria.wa.gov/opas/. Governor’s Office for Regulatory Innovation and Assistance at (800) 917-0043 or [email protected]. For a list of addresses to send your JARPA to, click on agency addresses for completed JARPA.

10a. Compliance with the State Environmental Policy Act (SEPA). (Check all that apply.) [help]

For more information about SEPA, go to www.ecy.wa.gov/programs/sea/sepa/e-review.html.

☐ A copy of the SEPA determination or letter of exemption is included with this application.

☐ A SEPA determination is pending with (lead agency). The expected decision date is .

☐ I am applying for a Fish Habitat Enhancement Exemption. (Check the box below in 10b.) [help]

☐ This project is exempt (choose type of exemption below).

☐ Categorical Exemption. Under what section of the SEPA administrative code (WAC) is it exempt?

☐ Other:

☒ SEPA is pre-empted by federal law.

10b. Indicate the permits you are applying for. (Check all that apply.) [help]

LOCAL GOVERNMENT

Local Government Shoreline permits:

☐ Substantial Development ☐ Conditional Use ☐ Variance

☐ Shoreline Exemption Type (explain):

Other City/County permits: Not Applicable

☐ Floodplain Development Permit ☐ Critical Areas Ordinance

STATE GOVERNMENT

Washington Department of Fish and Wildlife:

☐ Hydraulic Project Approval (HPA) ☐ Fish Habitat Enhancement Exemption – Attach Exemption Form

Washington Department of Natural Resources:

☐ Aquatic Use Authorization Complete JARPA Attachment E and submit a check for $25 payable to the Washington Department of Natural Resources.

Do not send cash.

Washington Department of Ecology:

☒ Section 401 Water Quality Certification

FEDERAL GOVERNMENT

United States Department of the Army permits (U.S. Army Corps of Engineers):

☒ Section 404 (discharges into waters of the U.S.) ☒ Section 10 (work in navigable waters)

United States Coast Guard permits:

☐ General Bridge Act Permit ☐ Private Aids to Navigation (for non-bridge projects)

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References: Anchor QEA. 2013. Wetland and stream ordinary high water mark delineation report, Naval Base Kitsap,

Bangor, P-834, SSN Pier Extension and Ship Support Building. Prepared by Anchor QEA, LLC, Seattle, WA, on behalf of KPFF Consulting Engineers. Prepared for Naval Base Kitsap Bangor, Bangor, WA. January 2013, resubmitted as Draft Final - March 2013.

Carilli J, Marx D, Hayman N, Young A. 2018. Eelgrass and Macroalgae in Vicinity of the Proposed Service Pier Extension at Naval Base Kitsap Bangor. August 2018. 37 pages. SPAWAR Systems Center Pacific Technical Report 18-888.

Ecology (Washington Department of Ecology). 2016. EPA-Approved Marine Water Quality Assessment 305(b) report and 303(d) list. Approved by the U.S. Environmental Protection Agency on July 22, 2016. Available from: http://www.ecy.wa.gov/programs/Wq/303d/currentassessmt.html. Accessed September 21, 2017

NMFS (National Marine Fisheries Service). 2018. Biological Opinion. Service Pier Extension

Navy (U.S. Department of the Navy). 2011. History of Installation: Naval Submarine Base Bangor. Accessed March 14, 2011. Available at: http://cnic.navy.mil/regions/cnrnw/installations/navbase_kitsap.html

Navy, 2016. Environmental Impact Statement. Land-Water Interface and Service Pier Extension. July. Available at http://www.nbkeis.com/EIS.aspx. Accessed September 21, 2017

Navy, 2018a. Final Supplemental Environmental Impact Statement. Land-Water Interface and Service Pier Extension at Naval Base Kitsap Bangor. Silverdale, WA: U.S. Navy.

Navy, 2018b. Under-Pier and Pile-Benthos Interface Visual Sediment Survey Report Naval Base Kitsap Bangor

USFWS (U.S. Fish and Wildlife Service). 2017. Email correspondence to Navy acknowledging that consultation will not need to be reinitiated based on the proposed changes to the project. May 19.

WDFW (Washington Department of Fish and Wildlife). 2017. Priority Habitat and Species on the Web. Available at: http://wdfw.wa.gov/mapping/phs/. Report generated August 2, 2017.

Attachments: JARPA Sheets

Attachment 1 – Table of Mitigation Measures from Mitigation Action Plan

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JARPA Sheets 

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NOT TO SCALE

USACE REFERENCE NO: NWS-2018-242 APPLICANT: US Navy

LOCATION: Wahoo Rd, Silverdale, WA 98383 LAT/LONG: 47.730886/122.742597

IN: Hood Canal

NEAR: Silverdale, WA

COUNTY: Kitsap STATE: WA DATUM: MLLW

FILE:

SHEET OF 11 DATE:

PROPOSED PROJECT:

Propsed Service Pier Extension and Upland Improvements.

Includes in-water and upland construction, demolition, and

other activities.

APPLICANT: US Navy

ADJACENT PROPERTY OWNERS:

1. US Navy

C:\Users\tj.schilling\Documents\P834-PIER-11554182-STRUCT_tj.schilling.rvt

FY2017 MCON PROJECT P-834

SEAWOLF CLASS SERVICE PIER

VICINITY MAP & PROJECT LOCATION

1/11/20191

VICINITY MAP

PROPOSED SERVICE PIER EXTENSION

& IN-WATER WORK, SEE SHEET 3

PROPOSED UPLAND WORK

CARLSON SPITEXISTING

CARDEROCK FACILITY

EEL GRASS BED

SEALION RD

WAHOO RD EXISTING SERVICE

PIER, SEE SHEET 2

HOOD CANAL

EBBFLOW

PROJECT SITE MAP

47.730886 N

122.742597 W

HOOD CANAL

NOT TO SCALE

NOT TO SCALE

NOTES:

1. PROJECT VERTICAL DATUM IS MLLW AT 0.00 FEET THE MEAN HIGHER HIGH WATER LINE (MHHW) HAS BEEN DETERMINED TO BE AT ELEVATION 11.10 FEET. THE MEAN

HIGH WATER (MHW) LINE HAS BEEN DETERMINED TO BE AT ELEVATION 10.18 FEET.

2. PROJECT HORIZONTAL DATUM IS WASHINGTON STATE PLANE, NAD 27, NORTH ZONE, PER NAVAL SUBMARINE BASE BANGOR, HORIZONTAL AND VERTICAL CONTROL MAP

DRAWING NUMBER PW-F-80-2 AND PW-F-80-3. UNITS OF MEASUREMENT ARE US SURVEY FEET.

3. DIRECTIONS TO THE SITE. FROM THE TRIDENT BLVD GATE, TURN RIGHT ONTO TRIGGER AVE, TURN LEFT ONTO STURGEON ST, TURN RIGHT ONTO SEALION RD, TURN LEFT

ONTO WAHOO RD AND CONTINUE UNTIL IT DEAD ENDS AT THE SERVICE PIER.

TRIGGER AVE

PROJECT LOCATIONSEALION RD

WAHOO RD

TRIDENT BLVD

PASS & ID OFFICEACCESS FROM SR 3

WETLAND

WETLAND BUFFER

STURGEON RD

STURGEON RD

Page 26

FPFP

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EXIST SUBMARINE

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HOOD CANAL

EXIST NORTH

SERVICE PIER EXTENSION

EXIST SERVIC

E PIE

REXIST MOORING DOLPHINS

EXIST YTB AND YT

MOORING FLOAT, TYP

EXIST NORTH

BREAKWATER EXTENSION

EXIST BLDG 7114

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ES

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EXIST NORTH

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EXIST BUILDING 7112,

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FOR UTILITY WORK

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AND FENDER SYSTEM,

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SCREEN, TO BE

DEMOLISHED

EXIST SMALL

CRAFT FLOAT, TYP

EXIST CONCRETE FLOAT

TO BE MODIFIED

FLOATIN

G

LABORATORY

USACE REFERENCE NO: NWS-2018-242 APPLICANT: US Navy

LOCATION: 7100 Wahoo Rd, Silverdale, WA 98315 LAT/LONG: 47.730886/122.742597

IN: Hood Canal

NEAR: Silverdale, WA

COUNTY: Kitsap STATE: WA

DATUM: MLLWSHEET OF 11 DATE:

PROPOSED PROJECT:

Propsed Service Pier Extension and Upland Improvements.

Includes in-water and upland construction, demolition, and

other activities.

APPLICANT: US Navy

ADJACENT PROPERTY OWNERS:

1. US Navy

FY2017 MCON PROJECT P-834SEAWOLF CLASS SERVICE PIER

EXISTING SITE PLAN

1/11/20192

EXISTING SITE PLANSCALE: 1" = 120'-0"

(TO REMAIN)

(TO REMAIN)

(TO REMAIN)

(TO REMAIN)

(TO REMAIN)

(TO REMAIN)

(TO REMAIN)

(TO REMAIN)

(TO REMAIN)

(TO REMAIN)

(TO REMAIN)(TO REMAIN)

(TO REMAIN)

(TO REMAIN)

(BLDG TO REMAIN)

INDICATES PILES TO BE REMOVED

(BLDG TO REMAIN)EXIST BUILDING 7042,SELECT DEMOLITIONFOR UTILITY WORK

Page 27

HOOD CANAL

EXIST

BLDG

7114

SHOPS,

OFFIC

ES

&CLASSROOMS

EXIST TRESTLE

EXIST BUILDING 7042

PROPOSED SERVICE PIER EXTENSION

EXIST TRESTLE

PROPOSED

SMALL CRAFT

FLOAT, TYP

RELOCATED

SMALL CRAFT

FLOAT

EXIST BUILDING 7112

520'-0"

RELOCATED

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SECURITY BARRIER

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MHW, EL 10.18

MHHW, EL 11.10

EXIST

PIER

PROPOSED CRANE PAD

PROPOSED

DOLPHIN

PROPOSED

FLOATING CAMELS

53'-0"

PROPOSED

COMPRESSOR

BUILDING

68'-0"

EASTERN EELGRASS LIMIT

PROPOSED BACKSIDE

UTILITY RACK

PROPOSED

STORMWATER

TRENCH

PROPOSED

UTLITY TRENCH

USACE REFERENCE NO: NWS-2018-242 APPLICANT: US Navy

LOCATION: Wahoo Rd, Silverdale, WA 98383 LAT/LONG: 47.730886/122.742597

IN: Hood Canal

NEAR: Silverdale, WA

COUNTY: Kitsap STATE: WA DATUM: MLLW

FILE:

SHEET OF 12 DATE:

PROPOSED PROJECT:

Propsed Service Pier Extension and Upland Improvements.

Includes in-water and upland construction, demolition, and

other activities.

APPLICANT: US Navy

ADJACENT PROPERTY OWNERS:

1. US Navy

C:\Users\jason.mendenhall\Documents\P834-PIER-11554182-STRUCT_jason.m

endenhall.rvt

FY2017 MCON PROJECT P-834SEAWOLF CLASS SERVICE PIER

PROPOSED SITE PLAN

1/11/20193

PROPOSED WAVE SCREEN

PROPOSED SITE PLANSCALE: 1" = 120'-0"

MACROALGAE LIMIT

WESTERN EELGRASS LIMIT

P

2

PRMLLW, EL 0.00

(TO REMAIN)

(TO REMAIN)

(TO REMAIN)

(TO REMAIN)

(WITHIN FOOTPRINT OF PIER)

(WITHIN FOOTPRINT OF PIER)

Page 28

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

HOO

D CANAL

PROPO

SED

SERVICE PIER EXTEN

SION 520'-0"

53'-0"

A

C

D

B

E

68'-0"

EXIST STEEL PILES

USACE REFERENCE NO: NWS-2018-242 APPLICANT: US NavyLOCATION: 7100 Wahoo Rd, Silverdale, WA 98315 LAT/LONG: 47.730886/122.742597IN: Hood CanalNEAR: Silverdale, WACOUNTY: Kitsap STATE: WADATUM: MLLW

SHEET OF 11 DATE:

PROPOSED PROJECT:Propsed Service Pier Extension and Upland Improvements. Includes in-water and upland construction, demolition, and other activities.

APPLICANT: US Navy

ADJACENT PROPERTY OWNERS:1. US Navy

FY2017 MCON PROJECT P-834SEAWOLF CLASS SERVICE PIER

ENLARGED SITE PLAN &CROSS-SECTION LOCATIONS

1/11/20194

ENLARGED PROPOSED SITE PLANSCALE: 1" = 80'-0"

MLLW, EL 0.00

UNIT

SUB

STAT

IONS

AND

INDU

STRI

AL P

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(TO

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Page 29

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

HOO

D CANAL

PROPO

SED

SERVICE PIER EXTEN

SION 520'-0"

53'-0"

A

C

D

B

E

68'-0"

EXIST STEEL PILES

USACE REFERENCE NO: NWS-2018-242 APPLICANT: US NavyLOCATION: 7100 Wahoo Rd, Silverdale, WA 98315 LAT/LONG: 47.730886/122.742597IN: Hood CanalNEAR: Silverdale, WACOUNTY: Kitsap STATE: WADATUM: MLLW

SHEET OF 11 DATE:

PROPOSED PROJECT:Propsed Service Pier Extension and Upland Improvements. Includes in-water and upland construction, demolition, and other activities.

APPLICANT: US Navy

ADJACENT PROPERTY OWNERS:1. US Navy

FY2017 MCON PROJECT P-834SEAWOLF CLASS SERVICE PIER

ENLARGED SITE PLAN &CROSS-SECTION LOCATIONS4

ENLARGED PROPOSED SITE PLANSCALE: 1" = 80'-0"

MLLW, EL 0.00

1/11/2019

Page 30

-60

-50

-40

-30

31 32 33 34 35 36

37

38 39 4041

42 4330

AA

BB

CC

EE

DDFF

E

A

PROPOSED STEEL PIPE PILE, TYP

PROPOSED CONCRETEFENDER PILE, TYP

S-523C5

USACE REFERENCE NO: NWS-2018-242 APPLICANT: US NavyLOCATION: 7100 Wahoo Rd, Silverdale, WA 98315 LAT/LONG: 47.730886/122.742597IN: Hood CanalNEAR: Silverdale, WACOUNTY: Kitsap STATE: WADATUM: MLLW

SHEET OF 11 DATE:

PROPOSED PROJECT:Propsed Service Pier Extension and Upland Improvements. Includes in-water and upland construction, demolition, and other activities.

APPLICANT: US Navy

ADJACENT PROPERTY OWNERS:1. US Navy

FY2017 MCON PROJECT P-834SEAWOLF CLASS SERVICE PIER

PILE PLAN - SHEET 1

1/11/20195

PROPOSED PILE PLANSCALE: 3/128" = 1'-0"

LEGEND: 36-INCH STEEL PIPE PILE (PLUMB) 36-INCH STEEL PIPE PILE (BATTER) 24-INCH STEEL PIPE PILE (PLUMB) 24-INCH STEEL PIPE PILE (BATTER) 18-INCH CONCRETE FENDER PILE (PLUMB)

Page 31

-60

-50

-40

-30

-20

44 45 46 47 48 49 50 51 52 53 54 55 56

AA

BB

CC

EE

57

DD

CD

B

PROPOSED STEEL

PIPE PILE, TYP

PROPOSED CONCRETE

FENDER PILE, TYP

USACE REFERENCE NO: NWS-2018-242 APPLICANT: US Navy

LOCATION: 7100 Wahoo Rd, Silverdale, WA 98315 LAT/LONG: 47.730886/122.742597

IN: Hood Canal

NEAR: Silverdale, WA

COUNTY: Kitsap STATE: WA

DATUM: MLLWSHEET OF 11 DATE:

PROPOSED PROJECT:

Propsed Service Pier Extension and Upland Improvements.

Includes in-water and upland construction, demolition, and

other activities.

APPLICANT: US Navy

ADJACENT PROPERTY OWNERS:

1. US Navy

FY2017 MCON PROJECT P-834SEAWOLF CLASS SERVICE PIER

PILE PLAN - SHEET 2

1/11/20196

PROPOSED PILE PLANSCALE: 3/128" = 1'-0"

LEGEND: 36-INCH STEEL PIPE PILE (PLUMB) 36-INCH STEEL PIPE PILE (BATTER) 24-INCH STEEL PIPE PILE (PLUMB) 24-INCH STEEL PIPE PILE (BATTER) 18-INCH CONCRETE FENDER PILE (PLUMB)

Page 32

MLLWEL 0.00

AABB CC EEDD

MHHWEL 11.10

T/DECKEL 20.50

MUDLINE, EL VARIES

CIP PILE CAP

CAST IN PLACE BULLRAIL

REMOVEABLE PC TRENCH COVER, TYP PC PS CONCRETE

DECK PANEL, TYP

TOG

PC PS CONC UTILITY TRENCH PANEL, TYP

ELEC DUCTBANK, CDF BALLAST, TYP

TRENCH DRAIN

TOP OF BULLRAIL

4'-1 3/4"4'-0" 15'-0" 15'-0" 15'-0"

CLEAN UTILITY TRENCH

DIRTY UTILITY TRENCH

CIP CONC TOPPING, TYP

36"x3/4"Ф

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TOP OF DECKEL 21.65FA

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FACE O

F FENDER

FACE O

F PIER

RELOCATED STEEL SMALL CRAFT FLOAT

TYP1'-6"

68'-0" 7'-1 1/2"

FACE O

F FENDER BEYO

ND

UTILITY RACK

15'-0" 4'-0"

EL 20.51

11

11 MHW

EL 10.18

TIP EL -112

TIP EL -112TIP EL -112

TIP EL -115TIP EL -118

TIP EL -124

TIP EL -112

18" SQ CONCFENDER PILE

USACE REFERENCE NO: NWS-2018-242 APPLICANT: US NavyLOCATION: 7100 Wahoo Rd, Silverdale, WA 98315 LAT/LONG: 47.730886/122.742597IN: Hood CanalNEAR: Silverdale, WACOUNTY: Kitsap STATE: WADATUM: MLLW

SHEET OF 11 DATE:

PROPOSED PROJECT:Propsed Service Pier Extension and Upland Improvements. Includes in-water and upland construction, demolition, and other activities.

APPLICANT: US Navy

ADJACENT PROPERTY OWNERS:1. US Navy

FY2017 MCON PROJECT P-834SEAWOLF CLASS SERVICE PIER

CROSS SECTION A

1/11/20197

SCALE: 1/8" = 1'-0"

SECTION - TYPICAL PIERA

Page 33

MLLWEL 0.00

57

MHHWEL 11.10

43'-0" 15'-0"

UHMW STRIP

EL 21.65

36"x1" STEEL PIPE DOLPHIN PILE

MHWEL 10.18

TIP EL PER SECTION 'A'

TIP EL -139

MUDLINE,EL VARIES

36"x3/4" STEEL PIPE PIER PILE

18" SQ CONCRETE FENDER PILE

EL 19.53TOP OF DECK

USACE REFERENCE NO: NWS-2018-242 APPLICANT: US NavyLOCATION: 7100 Wahoo Rd, Silverdale, WA 98315 LAT/LONG: 47.730886/122.742597IN: Hood CanalNEAR: Silverdale, WACOUNTY: Kitsap STATE: WADATUM: MLLW

SHEET OF 11 DATE:

PROPOSED PROJECT:Propsed Service Pier Extension and Upland Improvements. Includes in-water and upland construction, demolition, and other activities.

APPLICANT: US Navy

ADJACENT PROPERTY OWNERS:1. US Navy

FY2017 MCON PROJECT P-834SEAWOLF CLASS SERVICE PIER

CROSS SECTION B

1/11/20198

SCALE: 1/8" = 1'-0"

DOLPHINB

PROPOSED GRATED WALKWAY

Page 34

MLLW

EL 0.00

AABB

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DD

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WEL 11.10

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EL 20.50

25'-7 3/

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18'-9 "

36"x3/

4" STEEL

PIPE PIER PILES

36"x1 1/

4"

STEEL PIPE C

AMEL

GUIDE PILES

MHW

EL 10.18

TIP EL PER

SECTION 'A'

MUDLINE

PIER D

ECK

UHM

W STRIP

NOTE:

FOR INFO N

OT

SHOWN, SEE

CROS

S SECTION A

BACK

SIDE

UTILITY RACK

68'-0 "

USACE REFERENCE NO: NWS-2018-242 APPLICANT: US NavyLOCATION: 7100 Wahoo Rd, Silverdale, WA 98315 LAT/LONG: 47.730886/122.742597IN: Hood CanalNEAR: Silverdale, WACOUNTY: Kitsap STATE: WADATUM: MLLW

SHEET OF 11 DATE:

PROPOSED PROJECT:Propsed Service Pier Extension and Upland Improvements. Includes in-water and upland construction, demolition, and other activities.

APPLICANT: US Navy

ADJACENT PROPERTY OWNERS:1. US Navy

FY2017 MCON PROJECT P-834SEAWOLF CLASS SERVICE PIER

CROSS SECTION C

1/11/20199

SCALE: 1/

8" =

1'-0"

FLO

ATIN

G C

AMEL

C

PROP

OSED

FLO

ATIN

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MELS

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) 95'

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Page 35

MLLW

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AABB

CCEE

DD

MHH

WEL 11.10

T /DECK

EL 20.50

UHM

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STRIP

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PIPE PIER PILE

PIER D

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MHW

EL 10.18

TIP EL PER

SECTION 'A'

MUDLINE

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USACE REFERENCE NO: NWS-2018-242 APPLICANT: US NavyLOCATION: 7100 Wahoo Rd, Silverdale, WA 98315 LAT/LONG: 47.730886/122.742597IN: Hood CanalNEAR: Silverdale, WACOUNTY: Kitsap STATE: WADATUM: MLLW

SHEET OF 11 DATE:

PROPOSED PROJECT:Propsed Service Pier Extension and Upland Improvements. Includes in-water and upland construction, demolition, and other activities.

APPLICANT: US Navy

ADJACENT PROPERTY OWNERS:1. US Navy

FY2017 MCON PROJECT P-834SEAWOLF CLASS SERVICE PIER

CROSS SECTION D

1/11/2011910

SCALE: 1/

8" =

1'-0"

CRA N

E PL

A TFO

RMD

Page 36

MLLWEL 0.00

37

MHHWEL 11.10

B/WAVE SCREENEL -7.00

CONCRETE PILE CAP

STEEL FRAME

PRECAST CONCRETE WAVE SCREEN PANELS

24" STEEL PIPE PILES

MUDLINE, EL VARIES

5'-0"

TIP EL -82TIP EL -95

MHWEL 10.18

T/WAVE SCREEN ELEV

STEEL FRAME

STEEL FRAME

USACE REFERENCE NO: NWS-2018-242 APPLICANT: US NavyLOCATION: 7100 Wahoo Rd, Silverdale, WA 98315 LAT/LONG: 47.730886/122.742597IN: Hood CanalNEAR: Silverdale, WACOUNTY: Kitsap STATE: WADATUM: MLLW

SHEET OF 11 DATE:

PROPOSED PROJECT:Propsed Service Pier Extension and Upland Improvements. Includes in-water and upland construction, demolition, and other activities.

APPLICANT: US Navy

ADJACENT PROPERTY OWNERS:1. US Navy

FY2017 MCON PROJECT P-834SEAWOLF CLASS SERVICE PIER

CROSS SECTION E

1/11/201911

SCALE: 3/16" = 1'-0"

WAVE SCREENE

18.63

TOP OF PILE CAP ELEV 20.44

Page 37

Attachment 1 

Table of Mitigation Measures from Mitigation Action Plan 

Page 38

1JARPA: Attachment 1 – Table of Mitigation Measures from Mitigation Action Plan

Summary of Mitigation Measures, Current Practices, and Best Management Practices for the SPE Project

Mitigation Measures Timing and Methods Responsible Party(ies) Performance and Enforcement1. Protection of Marine Water Quality and Seafloor During ConstructionImpact: Contaminant loading viastormwater runoff from constructionsites.BMP 1: Implement stormwaterpollution prevention plan (SWPPP).

Implement SWPPP prior to the startof construction phase. Install andmaintain all structural BMPsthroughout construction phase inaccordance with SWPPP and permit.

The Navy will be responsible forobtaining USEPA Construction GeneralPermit and complying with permitconditions.The contractor will be responsible forimplementing and maintaining BMPsspecified in the SWPPP.

The Navy will conduct monitoringand inspections as required bySWPPP to document compliancewith permit conditions.

Impact: Accidental spill of oil, fuels,or other related materials.CP 1a: Implement oil and hazardousspill contingency plan, and deploycontainment boom during in-waterconstruction as required.

Use existing NAVBASE Kitsap Bangorfuel spill prevention and responseplans (the Commander Navy RegionNorthwest Oil and HazardousSubstance Integrated ContingencyPlan and the NAVBASE Kitsap BangorSpill Prevention, Control, andCountermeasure Plan [CommanderNavy Region Northwest Instruction(COMNAVREGNWINST) 5090.1,Integrated Contingency Plan, AnnexG]); Navy is responsible for providingplans, training, and spill responsematerials.

The contractor will be responsible fornotifying the Navy of any fuel spills.The Navy will be responsible forimplementing the plan, training thecontractor and crew in spill preventionand containment techniques, notifyingappropriate agencies, and providingoversight for incident response.

The contractor will contain andclean up any spilled materials assoon as possible; the Navy willinvestigate cause of spill; identifyand implement appropriatecorrective actions to preventrecurrence.

Impact: Incidental release ofconstruction debris and relatedcontaminants, including removedtreated timber piles.CP 1b: Develop and implementdebris management procedures,deploy containment boom during in-water construction, and handleremoved treated piles as required.

Develop and implement proceduresprior to start of in-waterconstruction activities.

The contractor will be responsible fordeveloping and implementing theprocedures.The Navy will be responsible forreviewing and approving theprocedures and for monitoringimplementation.

The contractor will be responsiblefor deploying and maintainingbooms, as required, throughoutconstruction period and ensuringthat all debris and other materialsare collected and properly disposedof. Following completion of in-waterconstruction activities, thecontractor will conduct anunderwater survey to collect andremove any remaining constructionmaterials.

Page 39

2JARPA: Attachment 1 – Table of Mitigation Measures from Mitigation Action Plan

Summary of Mitigation Measures, Current Practices, and Best Management Practices for the SPE Project (continued)

Mitigation Measures Timing and Methods Responsible Party(ies) Performance and EnforcementImpact: Prop wash from workvessels could resuspend bottomsediments.CP 1c: Vessel traffic will be excludedfrom depths shallower than 30 feetto the extent possible.

Conduct briefings with vesseloperators prior to start of in-waterconstruction activities.

The contractor will be responsible forbriefing vessel operators.The Navy will be responsible formonitoring in-water activities anddeveloping and implementingcorrective actions as needed.

The Navy will conduct visualinspections to ensure prop washfrom vessel operations is notcausing sediment resuspension andsurface turbidity plumes.

Impact: Grounding of work vesselscould disturb bottom sediments.CP 1d: Instruct vessel operators toavoid bottoming out (runningaground).

Conduct briefings with vesseloperators prior to start of in-waterconstruction activities.

The contractor will be responsible forbriefing vessel operators.The Navy will be responsible formonitoring in-water activities anddeveloping and implementingcorrective actions as needed.

The Navy will conduct visualinspections to ensure work vesselsare not grounding during low tides.

Impact: Anchoring work vesselscould disturb bottom sediments.CP 1e: Develop a mooring andanchoring plan and implementmeasures to avoid dragging anchorsand lines in special status areas.

Develop plan and obtain planapproval prior to start of in-waterconstruction activities. Conductbriefings with vessel operators priorto start of in-water constructionactivities.

The contractor will be responsible fordeveloping the plan and briefing vesseloperators.The Navy will be responsible forreviewing and approving the plan,monitoring in-water activities, anddeveloping and implementingcorrective actions as needed.

The Navy will conduct visualinspections to ensure anchor andline recovery operations are causingminimal sediment disturbance.

2. In-Water Work WindowsImpact: In-water constructionactivities could interfere withseasonal migrations or life stages ofsensitive marine species.MM 2: In-water construction willobserve an in-water work window toavoid juvenile salmonids.

In-water work would be restricted toperiods coinciding with the specifiedwork window (July 16 throughJanuary 15).

The construction contractor will beresponsible for ensuring that in-waterwork does not occur outside of thework window except as noted.The Navy will be responsible formonitoring in-water work activities.

The Navy will take necessarycorrective actions if the constructioncontractor does not comply withwork window restrictions.

Page 40

3JARPA: Attachment 1 – Table of Mitigation Measures from Mitigation Action Plan

Summary of Mitigation Measures, Current Practices, and Best Management Practices for the SPE Project (continued)

Mitigation Measures Timing and Methods Responsible Party(ies) Performance and Enforcement3. Protection of Upland Water Quality During ConstructionImpact: Increased potential forerosion and sedimentation fromstormwater runoff.BMP 3: Implement SWPPP.

Implement SWPPP prior to the startof construction phase. Install andmaintain all structural BMPsthroughout construction phase inaccordance with SWPPP and permit.

The Navy will be responsible forobtaining permit and complying withpermit conditions.The contractor will be responsible forimplementing and maintaining BMPsspecified in the SWPPP.

The Navy will conduct monitoringand inspections as required bySWPPP to document compliancewith permit conditions.

4. Protection of Water Quality During OperationsImpact: Contaminant loadings fromstormwater runoff discharges fromthe project sites.BMP 4: Implement SWPPP.

Implement SWPPP prior to the startof operation phase. Install andmaintain all structural BMPsthroughout operation phase inaccordance with SWPPP, Erosion andSedimentation Control Plan, andpermit.

The Navy will be responsible forobtaining National Pollutant DischargeElimination System (NPDES) permit andimplementing and maintaining BMPsspecified in the SWPPP and Erosion andSedimentation Control Plan.

The Navy will conduct monitoringand inspections as required bySWPPP to document compliancewith permit conditions.

Impact: Contaminant loadings fromstormwater runoff discharges fromthe project sites.CP 4a: Implement low impactdevelopment integratedmanagement practices (IMP).

Implement practices prior to thestart of operation phase. Install andmaintain all structural IMPsthroughout operation phase.

The Navy will be responsible forimplementing and maintaining IMPs.

The Navy will conduct monitoringand inspections to documenteffectiveness of practices andcompliance with permit conditions.

Page 41

4JARPA: Attachment 1 – Table of Mitigation Measures from Mitigation Action Plan

Summary of Mitigation Measures, Current Practices, and Best Management Practices for the SPE Project (continued)

Mitigation Measures Timing and Methods Responsible Party(ies) Performance and EnforcementImpact: Accidental spills fromvessels or wharf operations.CP 4b: Implement oil and hazardousspill contingency plan.

Use existing NAVBASE Kitsap Bangorfuel spill prevention and responseplans (the Commander Navy RegionNorthwest Oil and HazardousSubstance Integrated ContingencyPlan and the NAVBASE Kitsap BangorSpill Prevention, Control, andCountermeasure Plan[COMNAVREGNWINST 5090.1,Integrated Contingency Plan, AnnexG]); Navy will be responsible forproviding plans, training, and spillresponse materials.

The Navy will be responsible forimplementing the plan, notifyingappropriate agencies, and providingoversight for incident response.

The contractor will be responsiblefor containment and cleanup ofspilled materials as soon as possible;The Navy will investigate cause ofspill; identify and implementappropriate corrective actions toprevent recurrence.

5. Noise Attenuation During ConstructionImpact: Noise from in-waterconstruction activities could impactmarine species.MM 5a: Use vibratory driver for piledriving, with the exception of use ofimpact hammer to drive concretepiles, to proof steel piles and in caseswhere vibratory methods are notable to drive the pile to tip elevation.MM 5b: Deploy air bubble curtain orother noise attenuating deviceduring impact hammer operationsfor steel piles.MM 5c: Use soft start for impact piledriving operations.MM 5d: Observe timing restrictionson pile driving.

These measures will apply to all in-water pile driving operationsthroughout the construction phase.

The contractor will be responsible forimplementing these measures.The Navy will be responsible formonitoring construction activities.

Performance objective is minimizingpotential for noise-related impactson sensitive species.The Navy will be responsible formonitoring and enforcing thesemeasures (see #6). Documentationwill be submitted by the Navy to theNational Marine Fisheries Service(NMFS) and the U.S. Fish andWildlife Service (USFWS).

Page 42

5JARPA: Attachment 1 – Table of Mitigation Measures from Mitigation Action Plan

Summary of Mitigation Measures, Current Practices, and Best Management Practices for the SPE Project (continued)

Mitigation Measures Timing and Methods Responsible Party(ies) Performance and Enforcement6. Monitoring to Minimize Noise Impacts Prior to and during ConstructionImpact: Airborne and underwaternoise from construction activitiescould impact sensitive species.MM 6: Conduct marine mammal andmarbled murrelet monitoring duringimpact pile driving operations.Suspend pile driving operationswhen sensitive species are present inshutdown zone (During impact piledriving of steel piles: shutdown zoneis 1,000 meters for harbor porpoiseand all cetaceans and 220 meters forharbor seals and sea lions. Duringvibratory pile driving: shutdownzone is 1,000 meters for harborporpoise and all cetaceans and 30meters for harbor seals and sealions. During impact pile driving ofconcrete piles: shutdown zone is 100meters for harbor porpoise and allcetaceans and 50 meters for harborseals and sea lions).

Marine mammal and marbledmurrelet monitoring will beconducted daily prior to and duringpile driving operations to determinewhether individuals of these speciesare present in the shutdown andbehavioral disturbance zones and toensure that pile driving is suspendedas needed.

The Navy will be responsible forensuring trained monitors conduct real-time monitoring for sensitive species.The trained monitors will be responsiblefor notifying the contractor whensensitive species are present in theshutdown (injury monitoring zone) andbehavioral disturbance monitoringzones.The contractor will be responsible forsuspending pile driving operations untilnotified by the trained monitors thatthe shutdown zone (injury monitoringzone) is clear of sensitive species.

The Navy will be responsible formonitoring and enforcing thismeasure. Documentation will besubmitted by the Navy to NMFS andUSFWS.

Page 43

6JARPA: Attachment 1 – Table of Mitigation Measures from Mitigation Action Plan

Summary of Mitigation Measures, Current Practices, and Best Management Practices for the SPE Project (continued)

Mitigation Measures Timing and Methods Responsible Party(ies) Performance and Enforcement7–13. Mitigation Measures for Biological, Cultural, and Other Resources during ConstructionImpact: Shading effects and/orphysical disturbance of eelgrass.CP 7a: Construction barges will avoidgrounding in eelgrass beds duringconstruction activities. Vesseloperators will be provided withmaps of the construction area witheelgrass beds clearly marked.CP 7b: Shallow draft, lowerhorsepower tug boats will be used inthe nearshore area and for extendedoperations in areas shallower than40 feet below mean lower low water(MLLW), where feasible.CP 7c: Construction barges will avoidshading eelgrass beds for extendedperiods of time.

These measures will beimplemented for the duration of in-water construction work.

The construction contractor will beresponsible for ensuring that all vesseloperators observe these measures. TheNavy will also be responsible formonitoring in-water constructionactivities.

The performance criterion for theserequirements is minimizing project-related impacts on eelgrass beds.The Navy will be responsible formonitoring and enforcing thesemeasures.

Impact: Tree removal has thepotential to impact migratory birdsand potential breeding marbledmurrelets.MM8a: Tree removal would notoccur during the marbled murreletbreeding season of April 1 throughSeptember 23.MM 8b: Daily restriction for piledriving and no tree removal duringmarbled murrelet breeding seasonwould also limit exposure ofmigratory birds to construction noiseand habitat disturbance.

This measure will be implementedthroughout the duration ofconstruction.

The construction contractor will beresponsible for ensuring that thesemeasures are implemented. The Navywill be responsible for implementingthis measure.

The Navy will be responsible forenforcing these measures.

Page 44

7JARPA: Attachment 1 – Table of Mitigation Measures from Mitigation Action Plan

Summary of Mitigation Measures, Current Practices, and Best Management Practices for the SPE Project (continued)

Mitigation Measures Timing and Methods Responsible Party(ies) Performance and EnforcementImpact: Inadvertent discovery ofunknown archaeological resourcesMM 9: In compliance with Section106 of the National HistoricPreservation Act (NHPA),inadvertent discovery of unknownarchaeological resources wouldrequire work stoppage andconsultation with the State HistoricPreservation Office (SHPO) andaffected tribes.

This measure will be implementedthroughout the duration ofconstruction.

The Navy will be responsible forconsulting with the SHPO and affectedtribes.

The performance criterion for thismeasure is for the contractor tonotify the Navy and shut down theappropriate construction area ifunknown archaeological resourcesare uncovered. The SHPO will beresponsible for enforcing thismeasure.

Page 45

8JARPA: Attachment 1 – Table of Mitigation Measures from Mitigation Action Plan

Summary of Mitigation Measures, Current Practices, and Best Management Practices for the SPE Project (continued)

Mitigation Measures Timing and Methods Responsible Party(ies) Performance and EnforcementImpact: Airborne noise levels frompile driving and other constructionactivities would exceed allowablenoise limits for the OccupationalSafety and Health Administration(OSHA). Airborne noise wouldexceed nighttime maximumresidential levels imposed byWashington Administrative Code(WAC) (50 A-weighted decibel [dBA])at Olympic View. Underwater noisefrom pile driving could affect divers.MM 10a: Construction activities willnot be conducted during the hoursof 10:00 p.m. to 7:00 a.m. BetweenJuly 15 and September 23, impactpile driving will occur between 2hours after sunrise and 2 hoursbefore sunset to protect foragingmarbled murrelets during thebreeding season. BetweenSeptember 24 and January 15, in-water construction activities willoccur during daylight hours (sunriseto sunset).MM 10b: The Navy will notify thepublic about upcoming constructionactivities and noise at the beginningof each construction season. TheNotice to Mariners (MM 11a) willalso serve to notify divers, includingtribal divers, of potential underwaternoise impacts.

These measures will beimplemented throughout theduration of construction.The Navy will notify the public aboutupcoming construction activities andnoise at the beginning of eachconstruction season.

The construction contractor will beresponsible for ensuring that all vesseloperators observe these measures. TheNavy will also be responsible formonitoring in-water constructionactivities.The Navy will be responsible forimplementing these measures.

The Navy will be responsible forenforcing these measures.

Page 46

9JARPA: Attachment 1 – Table of Mitigation Measures from Mitigation Action Plan

Summary of Mitigation Measures, Current Practices, and Best Management Practices for the SPE Project (continued)

Mitigation Measures Timing and Methods Responsible Party(ies) Performance and EnforcementImpact: Temporary adverse noiseimpact to recreational areas.MM 10b (as described in MM 10a, babove, and MM 11a below)

These measures will beimplemented throughout theduration of construction.

The Navy will be responsible forimplementing these measures.

The Navy will be responsible forenforcing these measures.

Impact: Increased marine vesseltraffic.MM 11a: The Navy would develop alocal Notice to Mariners to establishuniform procedures to facilitate thesafe transit of vessels operating inthe project vicinity.MM 11b: Barge trips and associatedbridge openings would be scheduledto avoid peak commuting hours.

These measures will beimplemented throughout theduration of construction.

The Navy will be responsible forimplementing these measures.

The Navy will be responsible forenforcing these measures.

Impact: Disturbance and loss ofmarine/aquatic habitat.MM 12: Compensatory mitigationwould be implemented to fullymitigate all impacts on waters of theU.S. The Navy will purchasemitigation credits from the HoodCanal Coordinating Council (HCCC)In-Lieu Fee (ILF) Program to offsetthe project’s unavoidable impacts towaters of the United States (U.S.)

The Navy will purchase mitigationcredits prior to the start of in-waterconstruction.

Under the ILF program, the Navy willprovide the funding while the HCCC ILFsponsor will be responsible for planning,implementing and managing themitigation action.

The U.S. Army Corps of Engineers(USACE) will be responsible forverifying that compensatorymitigation complies with theCompensatory Mitigation for Lossesof Aquatic resources, Final Rule(USACE and USEPA, 2008).

Page 47

10JARPA: Attachment 1 – Table of Mitigation Measures from Mitigation Action Plan

Summary of Mitigation Measures, Current Practices, and Best Management Practices for the SPE Project (continued)

Mitigation Measures Timing and Methods Responsible Party(ies) Performance and EnforcementImpact: Effects on access to and use of Treaty protected resourcesMM 13a: Skokomish River Basin Ecosystem RestorationMM 13b: Shellfish seeding and beach enhancement at locations off Navy property.MM 13c: Culvert replacement at Little Boston Road over Shipbuilders Creek.

These measures will beimplemented as soon as feasible andwould take a varying number ofyears to implement. Methods aredescribed in Section 9.

The Navy will provide funding and thetribal sponsors will be responsible forplanning, implementing, and managingthe mitigation actions.

The tribal sponsors will beresponsible for enforcing thesemeasures.