A.07.24W9127N18B0010Amendment0002.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

The purpose of this amendment is to add the Astoria Turning Basin requirement to the solicitation. These requirements include the addition of CLINs 0016 and 0017, as w ell as Sections indicated in the contiuation sheet.

POC David Dvorak. david.l.dvorak@usace.army.mil, 503-808-4633

1. CONTRACT ID CODE PAGE OF PAGES

1 4

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 17-May-2018

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X W9127N18B0010

X 9B. DATED (SEE ITEM 11)

25-Apr-2018

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

17-May-2018

CODE

USACE PORTLAND DISTRICT

333 SW 1ST AVE

PORTLAND OR 97204-3440

W9127N 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W9127N18B0010

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 30 - BLOCK 14 CONTINUATION PAGE (SF 30)

The following have been added by full text:

CONTINUATION SHEET

01 10 10.00 82

1.1 a. Add Astoria Turning Basin location to description of work.

1.2 Add Astoria Turning Basin location to order of work.

1.6.7 Add POC for Port of Astoria

1.10 b. Add USCG POC for Aids to Navigation Team.

01 22 00.00 82

3.1.1 a. Add language to instruct bidders to include all four project work locations in bid

3.1.13 New subpart for CLINs 0016 and 0017 for work at Astoria Turning Basin.

01 57 20.00 82

1.2.3 e. Add in-water work window for Astoria Turning Basin.

3.6.1 d. & e. Add environmental monitoring requirements for Astoria Turning Basin.

35 20 23.00 82

1.2 Add requirement for notification to Government for start of work at Astoria Turning Basin.

2.1 d. Add Character of material for Astoria Turning Basin.

3.1.1e. Add paragraph about operations in vicinity of Port of Astoria.

3.1.1f. What had previosly been "e" is now "f".

3.1.4 Add "MLLW" reference to dredging depths at Rogue River. Add anticipated dredging depth range at Astoria Turning Basin.

3.1.6b. Added Astoria Turning Basin to the sentence requiring clamshell dredge.

3.1.8 b. (4) Add specification on number of acceptance areas at Astoria Turning Basin.

ATTACHMENTS

A3 A3-1 Replace with new A15 A15-1 Replace with new A24 A24-1 to 4 Add new Water Quality Monitoring Plan for Astoria Turning Basin

DRAWING

OCM-IND-000 Add information about Astoria Turning Basin OCM-ATB-000 Add Astoria Turning Basin dredging and placement area

SECTION 00 10 00 - SOLICITATION

CLIN 0016 is added as follows:

ITEM NO SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT

0016 15,000 Cubic

Yard

OPTION Astoria Basin Dredging and Placement

FFP

Dredging and Placement of Materials: Astoria Turning Basin FOB: Destination

NET AMT

CLIN 0017 is added as follows:

ITEM NO SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT

0017 10,000 Cubic

Yard

OPTION Astoria Basin Dredging and Placement

FFP

Dredging and Placement of Materials: Astoria Turning Basin FOB: Destination

NET AMT

SECTION 00 70 00 - CONDITIONS OF THE CONTRACT

The following Acceptance/Inspection Schedule was added for CLIN 0016:

INSPECT AT INSPECT BY ACCEPT AT ACCEPT BY

Destination Government Destination Government

The following Acceptance/Inspection Schedule was added for CLIN 0017:

INSPECT AT INSPECT BY ACCEPT AT ACCEPT BY

Destination Government Destination Government

SECTION 00 72 00 - GENERAL CONDITIONS

The following have been modified:

52.217-7 OPTION FOR INCREASED QUANTITY--SEPARATELY PRICED LINE ITEM (MAR 1989)

The Government may require the delivery of the numbered line item, identified in the Schedule as an option item, in the quantity and at the price stated in the Schedule. The Contracting Officer may exercise the option by written notice to the Contractor within as outlined below. Delivery of added items shall continue at the same rate that like items are called for under the contract, unless the parties otherwise agree.

CLINs 0004, 0005, and 0006 for optional dredging and placement of material at Rogue River: Prior to the completion of work at Rogue River (CLINs 0002 and 0003).

CLINs 0007, 0008, 0009AA, and 0009AB for upland placement at Rogue River: at time of award.

CLIN 0011 for optional dredging and placement of material at Port Orford and CLIN 0013 for optional dredging and placement of material at Baker Bay: Prior to the completion of mandatory work at Port Orford (CLIN 0010).

CLINs 0014 and CLIN 0015 for Photogrammetric Scow Load Measurement Testing at Baker Bay: Prior to the completion of mandatory work at Baker Bay (CLIN 0012).

CLIN 0016 and CLIN 0017 for optional dredging and placement of material at Astoria Turning Basin: Prior to July 26, 2018.

(End of clause)

(End of Summary of Changes)

Oregon Coast Mechanical Maintenance Dredging 2018

PROJECT TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

01 10 00.00 82 CONTRACT ADMINISTRATION DATA (DREDGING)

01 10 10.00 82 CONTRACTOR'S OPERATIONS AND REQUIREMENTS (DREDGING)

01 22 00.00 82 MEASUREMENT AND PAYMENT

01 35 26.00 82 GOVERNMENTAL SAFETY REQUIREMENTS (DREDGING)

01 42 00 SOURCES FOR REFERENCE PUBLICATIONS

01 45 00.00 82 QUALITY CONTROL (DREDGING)

01 45 00.15 25 RESIDENT MANAGEMENT SYSTEM CONTRACTOR MODE (RMS CM)

01 57 20.00 82 ENVIRONMENTAL PROTECTION (DREDGING)

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

35 20 23.00 82 DREDGING AND CHANNEL CLEARING

35 20 23.13 82 NATIONAL DREDGING QUALITY MANAGEMENT PROGRAM SCOW -

MONITORING PROFILE

-- End of Project Table of Contents --

PROJECT TABLE OF CONTENTS Page 1

SECTION TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 10 10.00 82

CONTRACTOR'S OPERATIONS AND REQUIREMENTS (DREDGING)

PART 1 GENERAL

1.1 DESCRIPTION OF WORK

1.2 ORDER OF WORK

1.3 SCHEDULE REQUIREMENTS

1.4 REFERENCES

1.5 PROJECT SIGN

1.6 EQUIPMENT CERTIFICATION AND INSPECTION

1.6.1 Equipment Certification

1.6.2 Joint Equipment Inspection

1.6.3 Daily Equipment Inspection

1.6.4 Coast Guard Inspection

1.6.5 Coordination of Work

1.6.6 U.S. Coast Guard Notice to Mariners

1.6.7 NOTICE TO PORTS

1.7 CONTINUITY OF WORK

1.8 SHOALING

1.9 SPECIAL NOTICE

1.10 EXISTING PIPELINES, STRUCTURES, OR UTILITIES

1.11 NOTIFICATION OF DIVING OPERATIONS

1.12 MISPLACED MATERIAL

1.13 CONTRACTOR SUPPLIED EQUIPMENT AND ACCOMMODATIONS

1.14 MEETINGS

1.15 UNEXPLODED ORDNANCE

PART 2 PRODUCTS - NOT USED

PART 3 EXECUTION - NOT USED

-- End of Section Table of Contents --

SECTION 01 10 10.00 82 Page 1

SECTION 01 10 10.00 82

CONTRACTOR'S OPERATIONS AND REQUIREMENTS (DREDGING)

PART 1 GENERAL

1.1 DESCRIPTION OF WORK

a. This Section covers general requirements applicable to specific Contractor's operations or equipment for this Contract for maintenance dredging and placement by mechanical dredge and support equipment at Rogue River, OR; Port Orford, OR; Baker Bay, WA; and Astoria Turning Basin, Astoria, OR.

b. Provide suitable floating mechanical dredging plant, either excavator or clamshell as prescribed in Section 35 20 23.00 82, and perform all work required to remove the specified materials from within the dredging pay area limits and placement of the dredge material within the designated sites as indicated on the Contract drawings. All equipment must meet all applicable U.S. Coast Guard (USCG) regulations.

1.2 ORDER OF WORK

The order of work will be Rogue River, Port Orford, Baker Bay, followed by Astoria Turning Basin. Proposed deviation from this order of work must be mutually agreed upon between the Government and the Contractor and at no additional cost to the Government.

1.3 SCHEDULE REQUIREMENTS

For purposes of this Contract, work in each location must be restricted to the environmentally cleared work window as prescribed in 01 57 20.00 82, along with further work restrictions as described in the Contracting Section 00 73 00 Section 52.211-10 Commencement, Prosecution, and Completion of Work.

1.4 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by basic designation only.

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 (2014) Safety and Health Requirements Manual

NPPR 385-1-93 (2009) Engineering Regulation, Diving Operation by Contract

1.5 PROJECT SIGN

Create two project signs for the dredge as shown in Attachment A1. The District name line must state "Portland District". The feature line must read "Oregon Coast Mechanical Maintenance Dredging 2018". Post one sign on each side of the dredge in locations that are plainly visible. The

SECTION 01 10 10.00 82 Page 2

1.6.5 Coordination of Work

Do not impede traffic during the performance of work under this Contract.

1.6.6 U.S. Coast Guard Notice to Mariners

For each general area of operation, notify the United States Coast Guard at least ten days prior to start of dredging and material disposal operations, and weekly thereafter. The notifications must be certified and a copy attached to the Contractor's daily report. Direct correspondence to 13th Coast Guard District, Office of Aids to Navigation, (OAN) Seattle, Washington. The 13th District may be contacted via phone at 206-220-7280, FAX 206-220-7265, or email address D13-PF-LNM@uscg.mil. Information provided by the Contractor in this notification will subsequently be disseminated by the U. S. Coast Guard to the general maritime community through Local Notice to Mariner publications and marine band broadcasts.

Include the following information in the notification:

a. Project designation (U. S. Army Corps of Engineers Contract number and Contract title), Contractor's address and day time phone number

b. Name and type of dredge plant used.

c. Dredging location (reference the navigation project name and dredging area limits)

d. Material disposal site(s) (site reference number and location)

e. Estimated beginning and ending dates of dredging and disposal operations

f. Terminology to be used:

(1) For Cautionary Areas: "Mariners are urged to use extreme caution in the area."

(2) For dredging and disposal operations: "Mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made."

g. Circumstances that warrant specific maritime precautions must be handled on a case-by-case basis in coordination with the local U.S.

Coast Guard representatives.

1.6.7 NOTICE TO PORTS

Coordinate all dredging and disposal operations before dredging operations begin at each port during normal business hours within 24 hours of the start of dredging. Provide written notice to each port 48 hours prior to beginning work. State the approximate beginning and ending dates of dredging, anticipated work hours, description of anchoring system used, and anticipated tug and barge route to and from disposal site. Provide a copy of this to the Government prior to beginning work. In addition, post dredging operations at local marinas and boat launches.

Port of Gold Beach: Andy Wright (541) 247-6269 Port of Port Orford: Steve Courtier (541) 999-0131 Port of Ilwaco: Guy Glenn Jr. (360) 642-3143 Port of Astoria: Matt McGrath (503) 741-3336

SECTION 01 10 10.00 82 Page 4 damage during construction operations.

b. Coordinate with and assist the U.S. Coast Guard in moving navigation buoys within the defined work area.

Points of Contact:

Rogue River and Port Orford Aids to Navigation Team-Coos Bay Officer in Charge, 541-888-3441

Baker Bay and Astoria Turning Basin Aids to Navigation Team-Astoria Officer in Charge, 503-325-3301

c. Utilities or improvements, whether buried or not, which cannot be determined to exist through visual inspection, if inadvertently damaged, must be promptly repaired or replaced, and an equitable adjustment in the amount due under the Contract will be made as provided in the Contract.

d. Assume full responsibility for reimbursing the owners for any damage to their properties, utilities, or improvements, or interference with their services caused through his operations. No relief will be granted from the responsibility set forth in Section 00 72 00, Contract Clause 52.236-3, SITE INVESTIGATION AND CONDITIONS AFFECTING THE WORK, except as provided above.

e. Observe all obstructions depicted in project plan drawings.

1.11 NOTIFICATION OF DIVING OPERATIONS

Immediately notify the GQAR of any need to employ diving operations.

Conform to the latest version of Engineering Regulation NPPR 385-1-93, Diving Operation by Contract, and the required publications therein as determined by the Portland District Diving Coordinator (DDC). A copy of NPPR 385-1-93 will be provided and used as a reference to prepare the required diving plan and the associated attachments.

1.12 MISPLACED MATERIAL

Should the Contractor during the progress of the work lose, dump, throw overboard, sink, or misplace any material, plant, machinery, or appliance which in the opinion of the Contracting Officer may be dangerous to or obstruct navigation, recover and remove the same with the utmost dispatch.

Give immediate notice, with description and location of such obstructions, to the Government Quality Assurance Representative (GQAR), and when required mark or buoy such obstructions until the same are removed.

1.13 CONTRACTOR SUPPLIED EQUIPMENT AND ACCOMMODATIONS

a. The following requirements apply to all dredge plant that operate under this Contract. All Contractor supplied equipment will be returned on completion of work under this Contract with the exception of the hypack key which will be returned after the Contractor has signed the release of claims.

b. The entire cost to the Contractor for furnishing, equipping, insuring, and maintaining the foregoing accommodations and equipment

SECTION 01 10 10.00 82 Page 6

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 22 00.00 82

MEASUREMENT AND PAYMENT

PART 1 GENERAL

1.1 REFERENCES

1.2 GENERAL INFORMATION

1.3 UNIT PRICE PAYMENT ITEMS

1.4 JOB PAYMENT ITEMS

1.5 APPLICABLE REGULATIONS

1.5.1 Variations In Estimated Quantities (Dredging)

PART 2 PRODUCTS - NOT USED

PART 3 EXECUTION

3.1 MEASUREMENT AND PAYMENT

3.1.1 Mobilization and Demobilization, CLIN 0001

3.1.2 Dredging and Placement of Materials; Rogue River Entrance

Channel, CLIN 0002

3.1.3 Dredging and Placement of Materials; Rogue River US Coast Guard

Access Channel, CLIN 0003

3.1.4 Dredging and Placement of Materials; Rogue River Entrance

Channel, (Option) CLIN 0004

3.1.5 Dredging and Placement of Materials; Rogue River Boat Basin

Access Channel, (Option) CLINs 0005 and 0006

3.1.6 Mobilization and Demobilization of Equipment for Upland

Placement by Rehandle; Rogue River, (Option) CLIN 0007

3.1.7 Upland Site Preparation and Cleanup; Rogue River, (Option) CLIN

3.1.8 Increment for Upland Placement Operations; Rogue River Work

Areas, (Option) CLIN 0009

3.1.9 Dredging and Placement of Materials; Port Orford, Base and

Option CLINs 0010 and 0011

3.1.10 Dredging and Placement of Materials; Baker Bay, Base and

Option CLINs 0012 and 0013

3.1.11 Baker Bay: Photogrammetric Scow Load Measurement Testing, (Option) CLIN 0014

3.1.12 Baker Bay: Photogrammetric Scow Load Measurement Testing, (Option) CLIN 0015

3.1.13 Dredging and Placement of Materials; Astoria Turning Basin, Option CLINs 0016 and 0017

3.2 SUBMISSION OF INVOICES FOR PAYMENT

3.3 PAYMENT METHOD

3.3.1 Pre/Post Dredge Survey

3.3.2 Quantity Surveys

SECTION 01 22 00.00 82 Page 1

1.5 APPLICABLE REGULATIONS

1.5.1 Variations In Estimated Quantities (Dredging)

a. Where the quantity of a pay item in this Contract is an estimated quantity and where the actual quantity of material within the required dredging prism, including the associated side slopes, varies more than 15 percent above or below the stated estimated quantity within the required dredging prism, an equitable adjustment in the Contract unit price will be made upon demand of either party. The equitable adjustment will be based upon any increase or decrease in costs due solely to the variations above 115 percent or below 85 percent of estimated quantity within the required dredging prism. Any equitable adjustment in the Contract unit price will also apply to that part of the actual quantity of allowable over-depth material above 115 percent or below 85 percent of the estimated allowable over-depth quantity.

b. If the quantity variation is such as to cause an increase in the time necessary for completion, the Contracting Officer shall upon receipt of written request for an extension of time within five days from the beginning of such delay, or within such further period of time which may be granted by the Contracting Officer prior to the date of final settlement of the Contract, ascertain the facts and makes such adjustment for extending the completion date as in his or her judgment the findings justify.

PART 2 PRODUCTS - NOT USED

PART 3 EXECUTION

3.1 MEASUREMENT AND PAYMENT

3.1.1 Mobilization and Demobilization, CLIN 0001

a. Measurement and payment for Mobilization and Demobilization will be considered complete and full compensation for the effort and cost to prepare the Contractor's plant and equipment for shipment; transport to and from the job site all necessary Contractor plant including related equipment, fuel, supplies, personnel required for its operation, and Government field office setup and on-board accommodations as stated in Section 35 20 23.00 82, DREDGING AND CHANNEL CLEARING; making ready for dredging; and maintaining plant and equipment in working condition at the site during the dredging period, and will be paid for at the Contract job price for this item. Plant subject to pre-work safety inspection requirements will not be considered "mobilized" until such equipment is determined to be in compliance as determined by the floating plant inspection and verified during the joint equipment walk-through. For bidding purposes, Rogue River, Curry County is the designated point of mobilization. Bidders should include all four project work locations (Rogue River, Port Orford, Baker Bay, and Astoria Turning Basin) when determining pricing for this CLIN.

Demobilization must be from the final dredging area, regardless of location.

b. Mobilization will be paid once all equipment needed to commence dredging and perform material placement operations is on site in accordance with the schedule required in Section 01 10 00.00 82, CONTRACT ADMINISTRATION DATA (DREDGING). All costs associated with

SECTION 01 22 00.00 82 Page 4

3.1.12 Baker Bay: Photogrammetric Scow Load Measurement Testing, (Option)

CLIN 0015

a. Measurement will be made at the job item for providing all labor, equipment, materials, and incidentals for the photogrammetric scow load testing as outlined in section 35 20 23.00 82 Dredging and Channel Clearing Subpart 3.1.8 for a duration of seven days.

b. Payment will be made at the job item upon completion of seven 24-hour days of active dredging. Payment will not be made for contractor or weather caused delays. Any delays to active dredging/placement will be summed and the time covered by this CLIN extended by the sum of those delays. Such delays will be counted in increments of the nearest whole hour.

3.1.13 Dredging and Placement of Materials; Astoria Turning Basin, Option CLINs 0016 and 0017

a. Measurement and payment for this bid item will be considered complete and full compensation for the effort and cost to excavate the entire dredging pay areas to not less than the required dredging depths in accordance with Section 35 20 23.00 82, DREDGING AND CHANNEL CLEARING, including water quality monitoring and placement of all dredged material within the Government furnished in-water placement sites, and will be paid at the Contract unit price (cubic yards of dredged material) for this item.

b. Quantity measurement: Reference paragraph 3.1.3 CLIN 0003 subitem (b).

3.2 SUBMISSION OF INVOICES FOR PAYMENT

Submit invoices for payment as required in Section 00 73 00, Special Contract Clause INVOICE SUBMITTAL. Progress payments for work accomplished will be made monthly.

3.3 PAYMENT METHOD

3.3.1 Pre/Post Dredge Survey

a. In Pre/Post Dredge Survey work areas, the Government will provide a required channel depth, with a maximum pay depth of 1 or 2 feet beyond the required channel depth, unless otherwise noted on the associated Contact drawings.

b. The dredging pay prism is formed by the maximum pay depth, the 1-vertical to 3-horizontal side slopes unless otherwise noted on the associated layout drawing, and the horizontal dredging area limits. It should be noted that several work areas within this contract will have a vertical slope on one or more side due to the close proximity of obstructions, and the subsequent inability of to collect adequate survey data outside of the channel limits. In work areas with vertical slopes, bidders should consider the potential of non-pay material outside the toe line moving into the dredging prism.

c. Request post-dredge Government hydrographic surveys in accordance with this Section. See Attachment A15 Survey Acceptance Criteria for survey methods and acceptance language for each work location. A work

SECTION 01 22 00.00 82 Page 9

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 57 20.00 82

ENVIRONMENTAL PROTECTION (DREDGING)

PART 1 GENERAL

1.1 GENERAL INFORMATION

1.2 PUBLICATIONS

1.2.1 Applicable Federal Regulations

1.2.2 Referenced Publications and Regulations

1.2.3 Environmental Work Windows and Placement Site Restrictions

1.2.4 Ballast Water Management For Control of Non-indigenous Species

1.3 NONCOMPLIANCE

1.4 SUBCONTRACTORS

1.5 PAYMENT

PART 2 PRODUCTS - NOT USED

PART 3 EXECUTION

3.1 IMPLEMENTATION

3.1.1 Environmental Protection Plan

3.1.2 Surveillance

3.1.3 Completion

3.2 ENVIRONMENTAL PROTECTION MEETINGS

3.3 TRAINING OF CONTRACTOR PERSONNEL

3.4 AIR QUALITY REQUIREMENTS

3.4.1 Air Resources

3.4.2 Diesel Powered Plant and Equipment

3.4.3 Reformulate Diesel Fuel

3.5 PROTECTION OF WATER RESOURCES

3.5.1 General

3.5.2 Bilge Water

3.5.3 Fuel and Lubricants

3.5.4 Invasive Species Prevention Measures for Boat Operations

3.6 ENVIRONMENTAL MONITORING AND REPORTING

3.6.1 Environmental Monitoring and Reporting

3.6.2 Report of Restricted Visibility

3.7 BIOLOGICAL RESOURCES

3.8 DISPOSAL OF HAZARDOUS WASTE

3.9 CHEMICAL MATERIALS MANAGEMENT AND WASTE DISPOSAL

3.9.1 Solid Wastes

3.9.2 Chemicals and Chemical Wastes

3.9.3 Contractor Generated Hazardous Wastes and Excess Hazardous

Materials

3.9.4 Disposal of Hazardous Waste

3.9.5 Fuel and Lubricants

3.10 RECYCLING AND WASTE MINIMIZATION

3.11 HISTORICAL, ARCHAEOLOGICAL, AND CULTURAL RESOURCES

3.12 SPECIAL REQUIREMENTS

3.12.1 Portable Spill Containment

SECTION 01 57 20.00 82 Page 1

c. Port Orford: The in-water work window for Port Orford is from May 1 through October 31.

d. Baker Bay: The in-water work window for Baker Bay is from August 1 through December 15.

e. Astoria Turning Basin: The in-water work window is from June 1 through December 15.

1.2.4 Ballast Water Management For Control of Non-indigenous Species

The following items apply to the management of ballast water for control of non-indigenous species:

a. Comply with all Federal and State laws pertaining to the management and reporting requirements for ballast water for control of non-indigenous species.

b. A copy of all reports submitted to the U.S. Coast Guard, the State of Oregon, and the State of Washington must be furnished in the PSMP (Environmental Protection Plan).

c. The following references are provided for Contractor information, but may not be inclusive of all applicable regulations:

(1) Federal: Title 33, Chapter I, Part 151, Subpart D, Sections

151.2000 through 151.2035

(2) Washington: RCW 77.120

(3) Oregon: ORS 783.620-783.992.

1.3 NONCOMPLIANCE

An order may be issued stopping all or part of the work for failure to comply with the provisions of this Section until corrective action has been taken. No time lost due to such stop orders will be the subject of a claim for extension of time or for costs or damages unless it is later determined that the Contractor was in compliance. Approval of the Contractor's plan will not relieve the Contractor of responsibility for adequate and continuing control ofpollutants and other environmental protection measures.

1.4 SUBCONTRACTORS

The prime Contractor must enforce compliance with this Section by subcontractors.

1.5 PAYMENT

No separate payment will be made for work covered under this Section.

Payment of fees associated with environmental permits, application, and/or notices obtained by the Contractor, and payment of all fines/fees for violation or non-compliance with Federal, State, Regional and local laws and regulations are the responsibility of the Contractor. All costs associated with this Section must be included in the Contract price.

SECTION 01 57 20.00 82 Page 6 areas within this contract that have been exposed to other lake or stream water must be thoroughly cleaned and decontaminated as described in the guidance found at http://www.100thmeridian.org/emersion.asp and http://www.anstaskforce.gov/QZAP/Uniform_watercraft_interception _protocols_and_standards.pdf. Follow instructions and best management practices in the Inspection and Cleaning Manual for Equipment and Vehicles to Prevent the Spread of Invasive Species located at http://www.usbr.gov/mussels/prevention.

Report the presence of invasive species to the Oregon Department of Environmental quality and/or the Washington Department of Ecology and notify the GQAR. Follow directions from these agencies regarding disposal or retention.

d. Conduct an onsite inspection of all vessels, equipment, pumps, and supplies (hulls, anchors, moorings, trailers, etc) to be used in or around the water before work begins. Coordinate the date and time of this onsite inspection with the COR seven days in advance of inspection. Clean and decontaminate equipment and report the presence of invasive species if needed as described above.

e. Inspect vessels and equipment upon removal from any body of water.

Clean and decontaminate equipment and report the presence of invasive species if needed as described above.

3.6 ENVIRONMENTAL MONITORING AND REPORTING

Keep a copy of all Water Quality Certificates on board all floating plant and shore offices responsible for monitoring (including the dredge) at all times.

3.6.1 Environmental Monitoring and Reporting

a. Perform water quality monitoring in accordance with the work area-appropriate Water Quality Monitoring Plan (Attachments A13 and A14) which have been coordinated with the States of Oregon and Washington and the National Marine Fisheries Service to ensure compliance with all applicable Water Quality Certificates and the Biological Opinion.

b. A Water Quality Monitoring Reporting Form is included in the Water Quality Monitoring Plan. The Water Quality Monitoring Report will show the sequences of observations and results for each day there is scheduled activity. If no dredging and/or placement activity takes place on a calendar day after start of work, but prior to completion of all work, a report must be submitted stating "No Dredging or Placement Occurred" for that day. Submit with the daily CQC report (Section

01 45 00.00 82 QUALITY CONTROL (DREDGING)).

c. Failure to submit accurate and complete reports will result in the immediate suspension of dredging and placement operations. Prior to resuming operations, develop operating procedures to prevent missed tests and hold a preparatory meeting with all personnel involved in water quality monitoring and the GQAR.

d. Turbidity monitoring requirements for dredging and placement at each project work area, per attachments A13,A14, and A24 are as follows:

(1) Rogue River: Visual monitoring

SECTION 01 57 20.00 82 Page 11

(2) Port Orford: Visual monitoring

(3) Baker Bay, WA Waters: Visual monitoring..

(4) Baker Bay, OR Waters: Metered monitoring.

(5) Astoria Turning Basin: Visual monitoring.

e. Dissolved Oxygen sampling requirements for dredging at each project work area, per attachments A13,A14, and A24 are as follows:

(1) Rogue River: None

(2) Port Orford: None

(3) Baker Bay: Metered Sampling

(4) Astoria Turning Basin: None

3.6.2 Report of Restricted Visibility

Report of Restricted Visibility: If monitoring is not performed as required due to an unsafe condition for the monitoring vessel, such as restricted visibility or wind/wave conditions that create an unsafe condition for the monitoring vessel but not for the dredge, a report must be prepared which includes the following. This report must be scanned so it can be electronically posted to the data exchange site. Attach the original report to the CQC log:

a. Brief explanation of why monitoring could not be obtained. Address attempts to test early in the tide cycle.

b. Visibility conditions that precluded testing, i.e. fog, heavy rain.

c. Time that the determination was made that visibility was too poor to obtain a test.

d. Name, title and phone number of third party called for verification of visibility conditions

e. Time that the third party was called.

f. Time of the end of the tide cycle.

g. Original signature and title of the person that made the determination of unsafe conditions due to restricted visibility.

3.7 BIOLOGICAL RESOURCES

a. Minimize interference with, disturbance to, and damage to fish, wildlife, and plants including their habitat. Protect threatened and endangered animal and plant species, including their habitat, in accordance with Federal, State, Regional, and local laws and regulations and project environmental compliance requirements.

b. Should a sick, injured, dead, or entangled specimen be encountered during work under this contract (regardless of fault), initial notification must be made to external agencies in accordance with the Response Plan For Sick, Injured, Dead, or Entangled Species (Attachment

SECTION 01 57 20.00 82 Page 12

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

SECTION 35 20 23.00 82

DREDGING AND CHANNEL CLEARING

PART 1 GENERAL

1.1 GENERAL INFORMATION

1.2 COORDINATION WITH PORTS

1.3 PUBLIC INFORMATION MEETING AT PORT ORFORD

1.4 OBSTRUCTIONS

PART 2 PRODUCTS

2.1 CHARACTER OF MATERIALS

PART 3 EXECUTION

3.1 DREDGING

3.1.1 General

3.1.2 Breaking for Other Work

3.1.3 In-fill Areas

3.1.4 Dredging Depths

3.1.5 Rock in Dredging Prism

3.1.6 Equipment

3.1.7 Layout of Work

3.1.8 Acceptance Areas

3.1.9 Photogrammetric Sensor System Testing

3.2 PLACEMENT OF EXCAVATED MATERIAL

3.2.1 General

3.2.2 Dispersal of Material

3.2.3 Additional Requirements

3.2.4 Special Requirements for Dispersal of Material at Rogue River

3.2.5 Miscellaneous Trash and Debris

SECTION 35 20 23.00 82 Page 1

SECTION 35 20 23.00 82

DREDGING AND CHANNEL CLEARING

PART 1 GENERAL

1.1 GENERAL INFORMATION

This Section covers furnishing suitable floating mechanical dredging plant and performing all work to remove the specified materials from within the dredging pay area limits as indicated and placement of the dredge material within the material placement sites, as shown or specified. All equipment must meet all applicable U.S. Coast Guard regulations.

1.2 COORDINATION WITH PORTS

Coordination with local port users will be necessary throughout the job.

Most dredging activities accomplished by this Contract are in congested areas. Thoroughly research the local traffic conditions at each dredging location and should expect the dredging operations will have some interruptions due to marine traffic passing through the work area.

Contractors will be required to provide to the Government a seven day notice via email of their anticipated start of work at Astoria Turning Basin, as well as notification of any delays to that start date.

Additionally, local events may occur at various times throughout the work period, bidders should familiarize themselves with the local schedule of events that may impact work. Government directed standby will not be authorized for marine traffic delays caused by any such events.

1.3 PUBLIC INFORMATION MEETING AT PORT ORFORD

Prior to beginning of work at Port Orford an informational meeting will be scheduled by the Government and held via conference call. The meeting is considered part of the mobilization effort and participation is mandatory.

The purpose of the meeting is for the Corps of Engineers, Port Orford Officials, and the Contractor to jointly provide information which will be shared by the Port with fishermen and the public on the nature of the work, project schedule, location of equipment, storage of equipment, and other pertinent information on the Contract operations.

1.4 OBSTRUCTIONS

Anchors, cables, and and other equipment that may be hazardous to navigation must be adequately marked with lights, signs, and buoys as necessary to prevent accidental contact by vessels in the area. Do not obstruct navigational traffic by the deployment of anchor systems that may pose a threat to safe passage as determined by the onsite Government representative.

PART 2 PRODUCTS

2.1 CHARACTER OF MATERIALS

Soil information regarding Coastal Projects' sediment may be obtained at the following link:

http://www.nwp.usace.army.mil/Missions/Environment/DMM.aspx. Snags, logs, rocks, gravel, boulders, swifter wire, commercial fishing gear, discarded

SECTION 35 20 23.00 82 Page 2 removed by previous dredging events with subsequent shoaling of similar materials.

b. Port Orford is comprised of poorly graded sand 95 percent (1902 grams per liter), 1 percent shell, and 4 percent fines throughout the project pay area. Larger rock will be encountered at both ends of the bulkhead pier. Anticipate large areas of rock locations as shown on the attached drawings.

c. Baker Bay Channel from RM 0+00 to RM 2+50 is predominately clean sands with an in-situ bulk density of approximately 2,000 grams per liter. From RM 2+50 to the boat basin is fine grains.

d. Astoria Turning Basin is 98.1% clean sand and less than 2% fines, with an in-situ bulk density of approximately 1,770 grams per liter.

PART 3 EXECUTION

3.1 DREDGING

3.1.1 General

a. Provide sufficient size tug(s) to ensure safe transit of material placement plant and dredge plant. Submit the name and size of tugs, and licenses of the operators prior to the start of work.

b. Dredge all pay areas along the alignment and to the dimensions shown and all material placed within the designated placement area. Depths measured in Mean Lower Low Water (MLLW). To assure maintenance to the required dredging depth, payment will be allowed for material actually removed from between the required dredging depth and the maximum payable depth, as shown. Material removed from below the maximum payable depth or outside the pay area limits will be considered excess and will not be paid for.

c. In all areas paid by pre- and post-dredge survey; clear the dredging design width to the required dredging depth. Payment will be as described in Section 01 22 00.00 82, MEASUREMENT AND PAYMENT, and will include material on the 1 vertical to 3 horizontal side slopes, except where indicated otherwise. Material on the side slopes will not be required to be removed for acceptance, unless indicated otherwise in the contract drawing. Any work area with a slope of anything other than 1:3 will be called out in the associated contract drawing. Example cross sections of work areas with side slopes other than 1:3 can be found in attachment A3.

d. The ESSAYONS, YAQUINA, or other Contract dredges may be working at projects on the Columbia River during the timeframe of this Contract.

These dredges will not be dredging in the same work area. Coordinate operations with all dredges working in the immediate areas.

e. The Port of Astoria has identified the following when working in the vicinity of their Port: To avoid conflict of operations use www.portofastoria.com to check for schedules of Cruise Ships and awareness that they have private dredging starting on November 1, consistent with their work window of November 1 to February 28.

f. No redistribution of material by dragging a beam (or other method) to achieve final grade will be allowed under this Contract. All

SECTION 35 20 23.00 82 Page 4 material specified to be dredged must be removed by dredging with a clamshell dredge.

3.1.2 Breaking for Other Work

a. Breaking for other work is allowable under this solicitation provided that the work required by this Contract can still be completed within the allotted time. Any breaks in work must be submitted to the Government in writing at least two weeks prior to going off-Contract.

Include in the request, at a minimum, the following items:

(1) Proposed change to the schedule.

(2) Repayment of GQAR expenses for standby on this Contract.

(3) Proposed method of acceptance and payment if the other work overlaps with the Federal work.

b. When going off-Contract for other work, the USACE project signs will be taken down or adequately covered for the duration of off-Contract work.

3.1.3 In-fill Areas

In-fill at all project locations should be expected. Necessity of cleanup cuts near the edge of the channel should be expected.

3.1.4 Dredging Depths

Perform maintenance dredging at all locations. Layout charts will be provided after the Government completes a pre-dredge survey. Direction will be given to dredge a specific quantity to the required dredging depth as indicated on the drawings.

NOTE: Minimum required dredging depth at the Rogue River work areas will be 9-10 feet MLLW in the Entrance and USCG Access Channels, and 8 feet MLLW in the Boat Basin Access Channel.

Dredging of unpaid material for flotation will be permitted as necessary, provided that dredging depths do not exceed the environmentally coordinated depths listed in the associated Water Quality Cert, Attachment A10. Additionally, the Government anticipates dredging depths at the Astoria Turning Basin to be between 42 and 48 feet MLLW.

3.1.5 Rock in Dredging Prism

If grade cannot be reached in areas where rock is encountered, immediately notify the GQAR, and the coordinates of the area are to be documented in the daily CQC report. In areas where rock is encountered, dig to refusal.

The specific areas documented in the daily QC report will be compared with the post dredge survey in order to determine whether re-dredging an area will be required, if the area is not found to grade.

3.1.6 Equipment

Perform all work under this Contract using a tugboat, floating mechanical dredge, scow(s) or suitable flat-deck barge in accordance with requirements outlined within this Subpart.:

SECTION 35 20 23.00 82 Page 5

a. Tugboat: The tug must be twin screw, with a minimum of 1200 horsepower, or of sufficient power to make headway in a max flood or ebb. In the event the fully loaded scow can't be controlled, a replacement boat or an assist boat will be required. The tug must have a good field of vision beyond the scow, when the scow is being pushed ahead. In the event the scow obstructs the vision of the tug operator, an experienced deckhand must be stationed as a lookout and that lookout must be in constant radio communication with the tug operator.

b. Floating Mechanical Dredge: For Rogue River work, either an excavator or clamshell dredge will be acceptable. For Port Orford, Baker Bay, and Astoria Turning Basin a clamshell dredge is required.

Both equipment types must be of appropriate size and capacity to perform the work in the conditions typical at the Oregon and Washington coastal entrances, and in accordance with Section 01 35 26.00 82.

c. Scows and Flat-Deck Barges: All scows used to transport material must be either bottom dump or split hull and in good working condition to prevent any loss of material during loading and transporting of dredged material. Contractor personnel are not to be permitted on-board scows during transit to or from the material placement sites during the actual placement operation. The technique of "sandbagging" bottom dump seals is acceptable providing that all such sandbagging materials are of organic composition and are fully biodegradable. For Rogue River work areas, the use of a flat-deck barge (or similar) for upland placement by material rehandle will be necessary. Both equipment types must be of appropriate size and capacity to perform the work in the conditions typical at the Oregon and Washington coastal entrances, and in accordance with Section 01 35 26.00 82. However, any flat-deck barges (or similar) used to complete the optional upland placement work will not be required to meet DQM monitoring requirements.

Failure to comply with the above conditions will be cause to require the replacement of such equipment with floating plant that can meet the requirements.

3.1.7 Layout of Work

Layout charts will be provided for all dredging areas based on the schedule of work and the hydrosurvey requests. The most current hydrosurvey information will be displayed on the dredging layout charts. Other pertinent information to be included with each layout package will be coordinated for the material placement site, supplemental tide gauge information, horizontal control locations, and computed quantities.

Government hydrographic survey personnel may be available during their normal working hours to assist in locating various short control points and tidal gauges.

3.1.8 Acceptance Areas

a. Each acceptance area will have a minimum of one pre-dredge and one post-dredge survey.

b. Each project work area will be broken into multiple acceptance areas. These areas will be determined prior to the start of work, the number of acceptance areas to be anticipated by the Contractor per project work area are as follows:

(1) Rogue River; Up to six acceptance areas will be prescribed by

SECTION 35 20 23.00 82 Page 6 the Government.

(2) Port Orford; Up two acceptance areas will be allowed.

(3) Baker Bay; Up to four acceptance areas will be prescribed by the Government.

(4) Astoria Turning Basin; Up to two acceptance areas will be allowed.

c. All work in an acceptance area must be completed before a post-dredge survey is requested.

d. All acceptance areas will be determined prior to the start of work and will not be changed unless by mutual agreement between the Government and the Contractor.

3.1.9 Photogrammetric Sensor System Testing

a. During the work at Baker Bay work areas, the Government intends to test a photogrammetric sensing system to evaluate its accuracy and reliability for the purposes of scow load measurement.

b. Although the system is to be mounted on the Contractor equipment, the Government will maintain ownership of the photogrammetric system(s) throughout the life of the contract, thus the Contractor will not be responsible for the maintenance or operation of this equipment at any time. However, the Contractor will be held responsible for damages to the equipment that occur due to carelessness or recklessness on the Contractor's part.

c. The system will be self-contained, and will include an independently mounted photogrammetric sensor mounted on the crane boom, wired to a waterproof case that will be mounted near the cab of the crane. The case must be mounted in such a manner as to not interfere with the operator's visibility, as well as to not restrict movement of the crane itself. The case must also mounted in a location that allows access to the Government without the use of fall-prevention equipment. The Contractor should anticipate the sensor portion of the system to be approximately 10in x 10in x 10in in size and approximately 5 lbs in weight; and the case portion of the system to be approximately 1ft x 1ft x 2ft in size, and approximately 50 lbs in weight.

d. The Contractor will be responsible for installing and uninstalling the system components to the satisfaction of the Contracting Officer.

Additionally, the scow that is to be used for the Contract must be fitted with between 4 and 10 positioning reference marks, to be supplied the Government. The Contractor will be responsible for the installation of these reference marks, and should anticipate them to be of either adhesive back, magnetic variety, or some similar means of temporary attachment. After installation of the system, the Contractor should anticipate a calibration period of approximately 2 hours to allow the Government technician to ensure proper positioning of the sensor system and reference marks. The uninstallation of the system will be required to occur within 48 hours of completion of the testing period. No permanent modifications to Contractor equipment will be required to accommodate the installation of this system. Design specifications of the sensor system equipment can be found in Attachment A22.

SECTION 35 20 23.00 82 Page 7

CL

N.T.S.

MAXIMUM PAY DEPTH

CL

N.T.S.

REQUIRED DREDGING DEPTH

MAXIMUM PAY DEPTH

CL

REQUIRED DREDGING DEPTH

MAXIMUM PAY DEPTH

N.T.S.

CL

N.T.S.

REQUIRED DREDGING DEPTH

MAXIMUM PAY DEPTH10

-18 ft. MLLW

-20 ft. MLLW20

45' 45'

-18 ft. MLLW

-20 ft. MLLW20

30' 45'

FACE

DOCK

CL

REQUIRED DREDGING DEPTH

MAXIMUM PAY DEPTH

CL

REQUIRED DREDGING DEPTH

DOCK FACE MAXIMUM DEPTH -16 ft. MLLW

MAXIMUM DREDGING / PAY DEPTH

***VERTICAL FACE***

MAXIMUM DREDGING / PAY DEPTH -16 ft

***NOTE ON DREDGING DEPTHS AT DOCK FACE***

N.T.S.

STA: 00+03+50

CROSS SECTION A - A

N.T.S.

STA: 00+05+50

CROSS SECTION B - B

CROSS SECTION OF 03+91+00 TO 07+50+00

CROSS SECTION OF 0+00+00 TO 03+91+00

PRE-DREDGE SURVEY

BE DETERMINED BASED OFF OF

ACTUAL DREDGING DEPTHS TO

PRE-DREDGE SURVEY

BE DETERMINED BASED OFF OF

ACTUAL DREDGING DEPTHS TO

15'

-18 ft. MLLW

CL

N.T.S.

100' 100'50'

WIDTH

OVER

PAY TO -16 ft. MLLW **

ACCEPTANCE IN OVER WIDTH AREA.

** NO DEPTH REQUIREMENT FOR

MAIN CHANNEL MAX. PAY / DREDGING DEPTH

-16 ft. MLLW

OVER WIDTH MAX. PAY / DREDGING DEPTH

MAIN CHANNEL REQUIRED &

RIVER MILE: 00+30+00

CROSS SECTION A - A

CL

N.T.S.

+5

75'37.5'

CHANNEL

150'

TOE

GREEN

TOE

RED

CHANNEL

QUARTER

-16 ft. MLLW (REQ)

-18 ft. MLLW (MAX)

137.5'

1V : 4H

RIVER MILE: 01+21+00

CROSS SECTION A - A

GREEN QUARTER CHANNEL)

-16 ft. MLLW (REQ. DEPTH: RED TOE TO

GREEN QUARTER CHANNEL)

-18 ft. MLLW (MAX PAY: RED TOE TO

MAX. DEPTH -18 ft. MLLW

-16 ft. MLLW (REQ)

-18 ft. MLLW (MAX)

OVERWIDTH

AUTHORIZED

OVERWIDTH

100'

MLLW

4:1 SLOPE ONLY.

ACCEPTED BASED ON

OVERWIDTH

TOE TO EDGE OF AUTHORIZED

AREA FROM GREEN

***** NOTE *****

NO REQ. DEPTH CRITERIA

CHANNEL TO GREEN TOE)

-14 ft. MLLW (MAX PAY: GREEN QUARTER

-10 ft. MLLW

-12 ft. MLLW

00-02-50

CROSS SECTION A - A20

-10 ft. MLLW

-12 ft. MLLW

00+02+50

CROSS SECTION A - A

**VERTICAL SLOPE

75'

150' 150'

REQUIRED DREDGING DEPTH

MAX DREDGING DEPTH AT TOE/

-10 ft. MLLW

-12 ft. MLLW

00+02+50

CROSS SECTION A - A

37.5' 37.5'

CROSS SECTION USCG ACCESS CHANNEL

AS SHOWN IN THE ABOVE TEMPLATE

TO THE PROXIMITY OF THE SHORELINE,

EDGE BETWEEN POINTS B, C, D, & E DUE

VERTICAL SLOPE ALONG THE CHANNEL

BIDDERS SHOULD ANTICAPATE A

**FOR THE PURPOSE OF PRICING,

-8 ft. MLLW

-10 ft. MLLW

00+02+50

CROSS SECTION A - A

PRE-DREDGE SURVEY

TO BE DETERMINED BY

ACTUAL DREDGING DEPTHS

CROSS SECTION BOAT BASIN ACCESS CHANNEL

50' 50'

ROGUE RIVER CROSS SECTIONS PORT ORFORD CROSS SECTIONS

BAKER BAY CROSS SECTIONS

N.T.S.

-43 ft. MLLW

-44 ft. MLLW

REQUIRED DREDGING DEPTH

MAX PAY DEPTH

DETERMINED BY PRE-DREDGE SURVEY.

ACTUAL DREDGING DEPTHS AND STATIONING TO BE

ASTORIA TURNING BASIN

218'

RIVER MILE: 13+04+00

CROSS SECTION A - A

DOCK FACE

APPROX. 100'

REPLACED IN ITS ENTIRETY A3-1 AMENDMENT #0002

CUT

NO.

FROM

STATION

TO

STATION

Channel Portion

Payment Method

Potential Hand Sounding Area

REQUIRED

DEPTH

(FEET)

ALLOWABLE

OVERDEPTH

(FEET) Acceptance

1 -0-05-00 0+00+00 Green Pre/Post N/A 10 N/A

2 0+00+00 0+10+00 Full Pre/Post N/A 10 2

3 USCG USCG Full Pre/Post Around Floating Dock 10 2

4 0+03+18 0+20+00 Full Pre/Post N/A 8 2

1 00+00+00 00+07+50 Full Pre/Post 00+03+88 to 00+07+50 16-18 2*

MB surveys, 7 foot by 7 foot median sort. Up to two Acceptance Areas will be allowed.

1 00+19+00 1+10+00 Full Pre/Post N/A 15 2

2 01 +15+00 01+25+00 Full Pre/Post N/A 15 2

1 12+45+50 13+15+00 Turning Basin Pre/Post N/A 43 1

MB surveys, 15 foot by 15 foot median sort. Up to two Acceptance Areas will be allowed.

" * " Indicates area where paid overdepth may be limited. Further details can be found on the Contract drawings.

Note: Actual required…