1565917 spc 1of1_appendix c.pdf

P-898 Replace SSN Berthing Pier 32 eProject No. 1565917

Naval Submarine Base New London - Groton, CT

Appendix C

APPENDIX C

Environmental Concurrence and

Permit Documents

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Appendix C

WATER QUALITY CERTIFICATE

FEDERAL CONSISTENCY CONCURRENCE

MEMORANDUM FOR RECORD (MFR)

CENAE-PP-N 29 November 2019

MEMORANDUM FOR Deputy District Engineer for Project Management

SUBJECT: Section 408 (S408) Permission Request Pursuant to 33 U.S. Code (Section

408) for Dredging for Pier 32 Replacement Project at US Naval Submarine Base New London.

1. Attached for your signature is the Memorandum For Record (MFR) which includes Navigation Section’s Agency Technical Review and recommendation to approve Dredging for Pier 32 Replacement Project at Naval Submarine Base New London which was submitted by Ms. Kathy Hall, CARDNO Consultant Permit Manager, on behalf of US Naval Submarine Base New London.

2. References:

a. US Army Corps of Engineers, North Atlantic Division, New England District, District Procedural Review Plan Pursuant to 33 USC § 408 for processing Section 408 requests.

b. EC 1165-2-216, Policy And Procedural Guidance for Processing Requests to Alter US Army Corps of Engineers Civil Works Projects Pursuant to 33 USC 408, Appendix G, Section G-4, subsections a. – d.

c. CENAE-ZC Memorandum For the District, dated 09 March 2018, re:

Delegation of (signature) Authority Pursuant to 33 U.S.C. 408

3. It should be noted that this S408 permission request is being processed in accordance with reference 2.a. and the processes outlined in reference 2.b. “…where the scope of analysis for S10 and S408 are the same…” under which Regulatory Division is responsible for the Public Interest Determination and Environmental Compliance (NEPA) and Navigation Section is responsible for making the Impacts to the Usefulness of the FNP determination resulting in one decision document (i.e.

permit).

4. In accordance with reference 2.c. your signature on the attached MFR will signify your concurrence or non-concurrence with Navigation Section’s recommendation for approval of the subject S408 permission request.

Wendy Gendron Acting Chief, Navigation Section

CENAE-PP-N 29 November 2019

MEMORANDUM FOR RECORD

SUBJECT: Section 408 (S408) Permission Request Pursuant to 33 U.S. Code (Section

408) for Dredging for Pier 32 Replacement Project at US Naval Submarine Base New London.

1. This memorandum was prepared to document Navigation Section’s analysis of, and recommendation to approve the United States Navy’s (through Cardo Consultant Kathy Hall) S408 permission request to dredge the Thames River in New London, CT in support of the US Naval Submarine Base New London Pier 32 Replacement Project.

2. References:

a. US Army Corps of Engineers, North Atlantic Division, New England District, District Procedural Review Plan Pursuant to 33 USC § 408 for processing Section 408 requests.

b. EC 1165-2-216, Policy And Procedural Guidance for Processing Requests to Alter US Army Corps of Engineers Civil Works Projects Pursuant to 33 USC 408, Appendix G, Section G-4, subsections a. – d.

c. CENAE-ZC Memorandum For the District, dated 09 March 2018, re:

Delegation of (signature) Authority Pursuant to 33 U.S.C. 408.

3. This S408 permission request is being processed in accordance with reference 2.a.

and the procedures outlined in reference 2.b. where “…the scope of analysis for S10 and S408 are the same…” under which Regulatory Division is responsible for the Public Interest Determination (PID) and Environmental Compliance (EC) and Navigation Section is responsible for making the Impacts to the Usefulness (of the FNP) Determination resulting in one permit decision and document (permit). The application, in its entirety is included in Attachment 2.

4. Authorized FNP:

The Federal Navigation Project (FNP) affected by the proposed action is the New London Harbor in New London Connecticut.

The Thames River is formed by the confluence of the Shetucket and Yantic rivers in Norwich and flows south for 12 miles to New London Harbor. It serves (in upstream order) commercial and recreational waterfronts in the communities of New London, Groton, Waterford, Ledyard, Montville, and Norwich.

The earliest work on the Thames River was completed by the Corps in 1836 and modified in 1879. This work included dredging and deepening the river channel and constructing several piers. The most recent work on the river, completed in 1942, provides for:

-A 25-foot-deep channel, about 10.5 miles long, extending from the area east of Mamacoke Cove in New London (almost two miles north of the New London Highway Bridge) to Norwich, at the mouth of the Shetucket River. The channel is 250 feet wide from Mamacoke Cove to Bartlett Crossover (about four miles upstream of the New London Highway Bridge), then 200 feet wide from Bartlett Crossover to Norwich. (In 1980, the Department of the Navy deepened a portion of this channel to 36 feet. The new depth begins at the US Route 95 Bridge and extends to the upstream end of the U.S. Naval Submarine Base in Groton. The Corps is responsible for maintaining this part of the channel to a depth of 36 feet and a width of 250 feet if required by military and commercial vessel traffic).

-Widening the channel opposite the U.S. Naval Submarine Base from 250 to 350 feet, with the widened area having a depth of 20 feet. This work was completed by the Department of the Navy in 1940.

-Five training dikes in the upper three miles of the river that help keep sediment from settling at the bottom of the channel. These dikes are: Norwich Dike (1,050 feet long); Rolling Mill Dike (3,480 feet long); Trading Cove Dike (2,370 feet long);

and Mohegan Dike (2,990 feet long).

-The removal of obstructions at the mouth of the Shetucket River.

The last maintenance dredging of the entrance channel (to -40’ MLLW) occurred in 1984 and was performed by the Government owned hopper dredge McFarland.

5. Project Description:

The proposed maintenance dredging within the federal navigation is part of larger project that would demolish Pier 32, Pier 17 stub, and Pier 10 at SUBASE and construct a new, larger Pier 32 that meets current Navy pier standards for submarines.

The end of the new Pier 32 would be approximately 205 feet east of the federal navigation channel. The quay wall north of Pier 32 would be reinforced, and concrete pads added, for a crane weight test area.

The project would conduct maintenance dredging of the pier areas and the federal navigation channel in the Thames River. The purpose of the maintenance dredging in the navigation channel is to maintain safe entry and departure of submarines.

Sediment dredging would be conducted at the new Pier 32 berth and slip areas, portions of the turning basins in the federal and Navy-maintained navigation channels, and sediment mounds in the footprints of the existing Piers 32 and 10 after demolition.

Assuming 2 feet of allowable over dredge depth in each area, the estimated volume of sediment to be dredged for the whole project is a maximum of approximately 54,000 cubic yards (cy) from a total area of approximately 720,000 square feet (16 acres). See figures 1 and 2 for project details.

The dredged material would be placed in an existing Confined Aquatic Disposal (CAD) cell located in the Thames River federal navigation channel south of SUBASE in the vicinity of the Submarine Force Museum at Crystal Lake Road in Groton. Based on a 2018 bathymetric survey, the current capacity of the CAD cell is 166,000 cy (approximate total 6 acre area). The dredged material would be placed in the center of the CAD cell at its deepest point, and the cell would be capped/covered with 2 feet the cleanest of the 54,000 cy of dredged material. An alternative source of cap material would be an unexcavated southern portion of the existing CAD cell in the navigation channel.

All cap material will be placed into the CAD cell using a tremie (i.e., pipe that directly deposits solids under water) to reduce sediment suspension and mixing with moderately contaminated sediment. Dredging would only occur during the period between October 1 and January 31 to avoid potential impacts on shellfish and fisheries resources in the area during the spring/summer spawning season.

The proposed project is anticipated to begin in late 2020 and take 3.5 years to complete. Dredging will be conducted in two or three different time periods beginning in October 2021. Dredging of the new Pier 32 area and the northern portion of the channel and slip areas would be conducted in the first construction year. The footprints of the demolished Pier 32 and Pier 10, and the southern portions of the channel dredge areas would be dredged after demolition of the existing piers in the third year of construction (2023-2024).

Figure 1: Proposed Dredge and Disposal Areas

Figure 2 Proposed Dredging Details

Figure 3 Detailed Dredging Plans

6. In accordance with ref. 2.a. and 2.b. the Navigation Section performed the ATR on the proposal to determine if the proposed work would impair the usefulness of the FNP.

The objective of this determination is to ensure that the proposed alteration will not limit the ability of the USACE project to function as authorized and will not compromise or change any authorized project conditions, purposes or outputs. The ATR analysis included: a determination of any Non-Federal Sponsor(s) (NFS) interest; evaluating the proposal’s potential impacts on navigation; potential impacts on FNP users and potential impacts on future maintenance and improvement of the project.

7. Reference 2.b. requires that a statement of “no-objection” be obtained from NFS associated with the Civil Works Project being altered. The intent of the no-objection statement is to document that the NFS is aware of the scope of the S408 request and does not object to the request being submitted to the USACE to initiate the evaluation of the request. There are no NFS associated with the FNP in New London Harbor.

8. The proposal involves maintenance dredging of the pier areas, maintenance dredging of the federal navigation channel in the Thames River, and placement of approximately 56,000 CY of dredged material into the Thames River CAD cell. Pre-placement survey conducted shows that approximately 166,000 CY of CAD cell space remain and therefore the proposed project material disposal is well within the allowed space within the CAD cell. Detailed volume calculations are included in Table 1 of the S408 Permit Application Request.

11. Based on the above factors, the ATR concluded that: there is no objection by any NFS; that there are no foreseeable negative impacts to the usefulness of the FNP, its users, or to future maintenance or improvement of the project that should result from the proposed alteration. The US Navy’s proposal to perform the maintenance dredging will not limit the ability of the FNP to function as authorized and will not compromise or change any authorized project conditions, purposes or outputs.

12. Based on information contained herein, the Navigation Section, has made the determination that the U.S. Navy’s proposal will not impair the usefulness of the FNP and recommends approval of the proposed maintenance dredging at the United States Submarine Base in New London, Connecticut, provided that the applicant meet all conditions (at Attachment 1) to be provided for inclusion in ref. 2.d.. The Office of Counsel and the District’s S408 Coordinator will provide legal and policy certification once Regulatory Division has completed the PID and NEPA compliance.

13. In accordance with references 2.b. and 2.d., signature below indicates concurrence or non-concurrence with Navigation Section’s recommendation of approval of the U.S.

Navy’s proposal to perform maintenance dredging at the US Naval Submarine Base New London, Connecticut.

Non-Concur Concur

SCOTT E. ACONE, P.E. SCOTT E. ACONE, P.E.

Chief, Programs and Chief, Programs and Project Management Division Project Management Division

ATTACHMENT 1

Conditions to be included in Permit Incl.

Statement from EC, Appendix K and Special Conditions

APPENDIX K

The following Statement, General Conditions and Special Conditions to be included in the DOA Permit

Statement

“…It has been determined that the activities authorized do not impair the usefulness of the USACE Navigation project and is not injurious to the Public Interest…”

Standard Terms and Conditions

This appendix includes the standard conditions that must be included in all Section 408 approval notifications, except where marked as optional. Use of optional conditions should be based on scope and scale of the approved activity:

LIMITS OF THE AUTHORIZATION

1. This permission only authorizes you, the requester, to undertake the activity described herein under the authority provided in Section 14 of the Rivers and Harbors Act of 1899, as amended (33 USC 408). This permission does not obviate the need to obtain other federal, state, or local authorizations required by law. This permission does not grant any property rights or exclusive privileges, and you must have appropriate real estate instruments in place prior to construction and/or installation.

2. The time limit for completing the S408 work authorized ends coincidentally with the expiration of CTGP, August 19, 2021. If you find that you need more time to complete the authorized activity, submit your request for a time extension to this office for consideration at least one month before the above date is reached.

3. Without prior written approval of the USACE, you must neither transfer nor assign this permission nor sublet the premises or any part thereof, nor grant any interest, privilege or license whatsoever in connection with this permission.

Failure to comply with this condition will constitute noncompliance for which the permission may be revoked immediately by USACE.

4. The requester understands and agrees that, if future operations by the United

States require the removal, relocation, or other alteration of the work herein authorized, or if, in the opinion of the Secretary of the Army or an authorized representative, said work will cause unreasonable conditions and/or obstruction of USACE project authorized design, the requester will be required upon due notice from the USACE, to remove, relocate, or alter the structural work or obstructions caused thereby, without expense to the United States. No claim can be made against the United States on account of any such removal or alteration.

INDEMNIFICATION AND HOLD HARMLESS

5. The United States will in no case be liable for: any damage or injury to the structures or work authorized by this permission that may be caused or result from future operations undertaken by the United States, and no claim or right to compensation will accrue from any damage; or damage claims associated with any future modification, suspension, or revocation of this permission.

6. The United States will not be responsible for damages or injuries which may arise from or be incident to the construction, maintenance, and use of the project requested by you, nor for damages to the property or injuries to your officers, agents, servants, or employees, or others who may be on your premises or project work areas or the federal project(s) rights-of-way. By accepting this permission, you hereby agree to fully defend, indemnify, and hold harmless the United States and USACE from any and all such claims, subject to any limitations in law.

7. Any damage to the water resources development project or other portions of any federal project(s) resulting from your activities must be repaired at your expense.

REEVALUATION OF PERMISSION

8. The determination that the activity authorized by this permission would not impair the usefulness of the federal project and would not be injurious to the public interest was made in reliance on the information you provided.

9. This office, at its sole discretion, may reevaluate its decision to issue this permission at any time circumstances warrant, which may result in a determination that it is appropriate or necessary to modify or revoke this permission. Circumstances that could require a reevaluation include, but are not limited to, the following:

a. you fail to comply with the terms and conditions of this permission;

b. the information provided in support of your application for permission proves to have been inaccurate or incomplete; or

c. significant new information surfaces which this office did not consider in reaching the original decision that the activity would not impair the usefulness of the water resources development project and would not be injurious to the public interest

CONDUCT OF WORK UNDER THIS PERMISSION

10. You are responsible for implementing any requirements for mitigation, reasonable and prudent alternatives, or other conditions or requirements imposed as a result of environmental compliance.

11. Work/usage allowed under this permission must proceed in a manner that avoids interference with the inspection, operation, and maintenance of the federal project. In the event of any deficiency in the design or construction of the requested activity, you are solely responsible for taking remedial action to correct the deficiency. The right is reserved to the USACE to enter upon the premises at any time and for any purpose necessary or convenient in connection with government purposes, to make inspections, to operate and/or to make any other use of the lands as may be necessary in connection with government purposes, and you will have no claim for damages on account thereof against the United States or any officer, agent or employee thereof.

12. You must provide copies of pertinent design, construction, and/or usage submittals/documents. USACE may request that survey and photographic documentation of the alteration work and the impacted project area be provided before, during, and after construction and/or installation.

13. You may be required to perform an inspection of the federal project with the

USACE, prior to your use of the structure, to document existing conditions.

14. USACE shall not be responsible for the technical sufficiency of the alteration design nor for the construction and/or installation work.

SPECIAL CONDITIONS

Navigation – Structures Near FNPs

17. To ensure the integrity of the Federal Navigation Project (FNP), the permittee shall perform and submit a pre-dredge hydrographic survey at least 15 days prior to the start of dredging, and a post-dredge hydrographic survey no more than 30 days after the completion of dredging. The pre-dredge hydrographic survey is required to establish a baseline prior to the start of work and shall include both dredge and disposal areas.

The survey area shall include: a) the entire dredging area within the horizontal limits of the channel extending 500 feet upstream and downstream of the dredging area; and b) a minimum of 120 feet immediately outside of the eastern horizontal limit of the channel and extending 500 feet upstream and downstream of the dredging area.

18. The surveys shall achieve complete seafloor coverage using either multibeam sonar or multi-transducer sweep method. For hydrographic surveying techniques and information, refer to the Corps of Engineers Hydrographic Surveying Manual (EM 1110- 2-1003). The hydrographic survey deliverables are a minimum xyz file and pdf drawing both in U.S. Survey feet referenced to horizontal datum NAD 83 State Plane and vertical datum Mean Lower Low Water (MLLW). The pdf drawing should be at 100 scale and include the following: FNP limits, any pertinent structures in the area, and minimum soundings sorted to 20 feet. Address any questions regarding survey methodology to the Corps Survey Branch at (978) 318-8783.

19. The permittee shall mark the pre and post-dredge surveys with the words “Permit No. NAE-XXXX-XXXX (insert permit # here)” and mail them to: Navigation Branch, Corps of Engineers, New England District, 696 Virginia Road, Concord, MA 01742- 2751, ATTN: Jenifer Thalhauser. Documents which are not marked and addressed in this manner may not reach their intended destination and do not comply with the requirements of this permit. Emails will not be accepted.

20. A standard, Corps of Engineers, Work-Start Notification Form (WSNF) shall be submitted to the Corps a minimum of two weeks prior to the commencement of the construction operations. The permittee shall mark the work-start with the words “Permit No. NAE-XXXX-XXXX (insert permit # here)” and mail them to: Navigation Branch, Corps of Engineers, New England District, 696 Virginia Road, Concord, MA 01742- 2751, ATTN: Jenifer Thalhauser. Documents which are not marked and addressed in this manner may not reach their intended destination and do not comply with the requirements of this permit.

21. Placement of Unsuitable Material in Cell: The unsuitable material shall be transported in scows and deposited in the in-channel CAD cell shown on the applicant’s drawings. Use of a fully automated horizontal positioning system capable of locations within 1.0 meter of the true position is required to ensure proper positioning of the scows over the disposal cell. Placement of unsuitable material within the disposal cell shall be such that mounding of the unsuitable material is minimized. The Contractor shall redistribute all mounds of unsuitable material that project above the -43 foot MLLW datum to other areas of the disposal cells.

22. The permittee shall locate all structures (including vessels) far enough outside the FNP channel limit so neither the structures, nor any vessels tied to these structures, encroach into the FNP at any time.

23. The permittee shall not interfere with Corps of Engineers personnel or its contractors engaged in hydrographic surveys, maintenance or improvement of the existing FNP. If, in the opinion of the Corps, the permittee’s structures or vessels attached to them must be moved to allow for the maintenance or improvement of the existing FNP, the permittee shall move the structures or vessels as directed by the Corps.

24. The permittee understands and agrees that, if future operations by the United States require the removal, relocation, or other alteration, of the structure or work herein authorized, or if, in the opinion of the Secretary of the Army or his authorized representative, said structure or work shall cause unreasonable obstruction to the free navigation of the navigable waters, the permittee will be required, upon due notice from the Corps of Engineers, to remove, relocate, or alter the structural work or obstructions caused thereby, without expense to the United States. No claim shall be made against the United States on account of any such removal or alteration.

25. The permittee shall not hold the Government or its contractor responsible for damage(s) to these structures or any vessels tied to them during surveying or dredging operations.

Attachment 2

S408 Permit Application Request

Cardno 515 Centerpoint Drive Middletown, CT 06457

Phone +1 860 343 1776 www.cardno.com

July 18, 2019

Christopher Hatfield Section 408 Coordinator U.S. Army Corps of Engineers New England District 696 Virginia Road Concord, MA 01742-2718

Subject: Request for Permission Pursuant to 33 U.S. Code 408 (Section 408) for Dredging for Pier 32 Replacement Project at Naval Submarine Base New London

Dear Mr. Hatfield, The United States Department of the Navy (Navy) is requesting permission to modify the river bottom of the federal navigation channel in the Thames River at Naval Submarine Base New London (SUBASE), in Groton, CT. The proposed modification is maintenance dredging, and will not impair the usefulness of the USACE navigation channel in the Thames River, is not injurious to the public interest, and complies with the following relevant policies in Engineering Circular (EC) 1165-2-220: it will not compromise or change any authorized USACE project conditions; it will not have the effect of deauthorizing a federal navigation project or eliminating an authorized project purpose; the alteration meets current USACE design and construction standards; and there will be no hydrologic or hydraulic impacts or changes in water surface profiles.

The proposed maintenance dredging within the federal navigation is part of larger project that would demolish Pier 32, Pier 17 stub, and Pier 10 at SUBASE and construct a new, larger Pier 32 that meets current Navy pier standards for submarines. The end of the new Pier 32 would be approximately 205 feet east of the federal navigation channel. The quay wall north of Pier 32 would be reinforced, and concrete pads added, for a crane weight test area.

The project would conduct maintenance dredging of the pier areas and the federal navigation channel in the Thames River. The purpose of the maintenance dredging in the navigation channel is to maintain safe entry and departure of submarines. Sediment dredging would be conducted at the new Pier 32 berth and slip areas, portions of the turning basins in the federal and Navy-maintained navigation channels, and sediment mounds in the footprints of the existing Piers 32 and 10 after demolition. Assuming 2 feet of allowable over dredge depth in each area, the estimated volume of sediment to be dredged for the whole project is a maximum of approximately 54,000 cubic yards

(cy) from a total area of approximately 720,000 square feet (16 acres).

The dredged material would be placed in an existing Confined Aquatic Disposal (CAD) cell located in the Thames River federal navigation channel south of SUBASE in the vicinity of the Submarine Force Museum at Crystal Lake Road in Groton. Based on a 2018 bathymetric survey, the current capacity of the CAD cell is 166,000 cy (approximate total 6 acre area). The dredged material would be placed in the center of the CAD cell at its deepest point, and the cell would be capped/covered with 2 feet the cleanest of the 54,000 cy of dredged material. An alternative source of cap material would be http://www.cardno.com/ an unexcavated southern portion of the existing CAD cell in the navigation channel. All cap material would be placed into the CAD cell using a tremie (i.e., pipe that directly deposits solids under water) to reduce sediment suspension and mixing with moderately contaminated sediment. Dredging would only occur during the period between October 1 and January 31 to avoid potential impacts on shellfish and fisheries resources in the area during the spring/summer spawning season.

The proposed project is anticipated to begin in late 2020 and take 3.5 years to complete. Dredging would be conducted in two or three different time periods beginning in October 2021. Dredging of the new Pier 32 area and the northern portion of the channel and slip areas would be conducted in the first construction year. The footprints of the demolished Pier 32 and Pier 10, and the southern portions of the channel dredge areas would be dredged after demolition of the existing piers in the third year of construction (2023-2024).

As outlined in EC 1165-2-220, the following specific information is being provided with this request:

1. The location of the proposed activities relative to the federal navigation channel, project plans, and estimated dredge volumes are provided in Attachments 1 through 6 and in Table 1.

2. The Navy has submitted an application for USACE permits pursuant to Section 10 of the Rivers and Harbors Act of 1899 and Section 404 of the Clean Water Act, and the project has been the subject of USACE regulatory program coordination. Diane Ray of the New England District is the USACE contact for the current permit application.

3. The Navy has also submitted an application for a Water Quality Certificate to the Connecticut Department of Energy and Environmental Protection pursuant to Clean Water Act Section 401. Project plans are provided in the permit application package.

4. The Navy completed a National Environmental Policy Act Environmental Assessment and Finding of No Significant Impact in January 2019. Consultations were concluded under Section 7 of the Endangered Species Act, Magnuson-Stevens Act for Essential Fish Habitat, Section 106 of the National Historic Preservation Act, and with federally recognized tribes.

5. Credit is not being sought under Section 221 of the Flood Control Act of 1922, as amended, nor is approval under Section 204(f) of the WRDA 1986 being sought.

6. As shown in the attached plans, the proposed project will involve use of both property owned by the Navy and the federal navigational channel.

Please feel free to contact me or SUBASE Environmental Director at michael.brown13@navy.mil or

(860) 694-3976, if you have any comments, questions, or concerns.

Sincerely, Kathy Hall Consultant Permit Manager, Cardno 860-316-2289; Kathy.hall@cardno-gs.com

Cc: Diane Ray, U.S. Army Corps of Engineers, New England District Michael Brown, SUBASE New London Tracey McKenzie, SUBASE New London mailto:michael.brown13@navy.mil mailto:Kathy.hall@cardno-gs.com

Attachment 1. Location of Project and Existing CAD Cells

Note: Coordinates are Connecticut State Plane NAD 1983.

Attachment 2. Pier 32 Project Areas

Attachment 3. Pier 32 Proposed Dredging Areas

Attachment 4. Pier 32 Proposed Dredging Section

Note: Coordinates are Connecticut State Plane NAD 1983.

Attachment 5. Pier 10 Project Area

Attachment 6. Pier 10 Proposed Dredging Areas

Table 1. PIER 32 REPLACEMENT PROJECT MAXIMUM DREDGING ESTIMATES

DREDGE AREA

DESCRIPTION

APPROX.

DREDGE

AREA

(SQUARE

FEET)

PROJECT

DEPTH

(FEET

MLLW)

OVER-

DREDGE

DEPTH

(2 FEET )

APPROX.

VOLUME

PROJECT

DEPTH (CY)

APPROX.

VOLUME

OVER-

DREDGE

DEPTH

(CY)

APPROX.

DREDGE

AREA

VOLUME

TOTALS

(CY)

NEW PIER 32 INSIDE

BERTH (maximum depth)

71,127 -40 -42 10,700 5,300 16,000

NEW PIER 32 OUTSIDE

BERTH (maximum depth; includes existing Pier 32 footprint)

68,013 -38 -40 13,000 5,100 18,100

TURNING BASIN AND

PIER 32 SLIP 559,665 -36 -38 3,100 8,900 12,000

PIER 10 FOOTPRINT 22,000 -36 -38 6,100 2,000 8,200

TOTALS 720,805 -- -- 32,900 21,300 54,300

Notes:

1. MLLW = mean lower low water; CY = cubic yards

2. Estimates are based on a bathymetric survey conducted May 2018.

3. 2018 bathymetric survey indicated that there are several areas that are marginally above the design depth. Maximum dredge depths alongside the new Pier 32 would be implemented to accommodate maintenance divers and equipment, depending on funding available for the project at the time of construction, or may be dredged to less than the maximum indicated in the table.

Clean Water Act

404 Section 10 Permit

408 Permit