Revised Spec Sections 01-11-00 and 01-22-00_Amend 0005.pdf

IMPROVEMENT AND MAINTENANCE DREDGING AMENDMENT - SEPT 2021

PORTSMOUTH HARBOR AND PISCATAQUA RIVER, NH/ME

SECTION TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 11 00

SUMMARY OF WORK (AMENDMENT - SEPT 2021)

PART 1 GENERAL

1.1 PROJECT LOCATION

1.2 PILOT AND PILOTAGE

1.3 MARINE TRAFFIC CONTROL AND COMMUNICATION

1.4 WORK COVERED BY CONTRACT DOCUMENTS

1.4.1 General

1.4.2 Work Restrictions

1.4.3 General Description of Work

1.4.3.1 BASE BID ITEMS

1.4.3.2 OPTIONAL BID ITEM

1.5 REFERENCES

1.6 SUBMITTALS

1.7 PROJECT SITE CONDITIONS

1.7.1 Physical Data

1.8 WORK COMMENCEMENT AND COMPLETION REQUIREMENTS

1.9 WORK SEQUENCING AND SCHEDULING

1.9.1 Work Sequence

1.9.1.1 Base Bid Items with Optional Bid Item NOT AWARDED

1.9.1.2 Base Bid Items with Optional Bid Item AWARDED

1.9.2 Hours of Operations

1.9.3 Scheduling

1.9.3.1 Initial Project Schedule

1.9.3.2 Periodic Schedule Updates

1.9.4 Rate of Progress

1.10 PRE-DREDGING PHOTOGRAPHIC SURVEY

1.11 SUPERINTENDENCE BY THE CONTRACTOR

1.12 WORK SITE AND CONTRACTOR'S USE OF PREMISES

1.12.1 General

1.12.2 Staging and Storage Areas

1.12.3 Work Limits

1.12.4 Access to Work Site

1.12.5 Protection and Security

1.12.6 Work By Other Contractors

1.12.7 Emergency Contacts

1.12.8 Damaged Property

1.12.9 Contractor's Receipt of Supplies

1.12.10 Daily Clean Up

1.12.11 Government Sanitary Facilities

1.13 CONTRACTOR'S USE OF UPLAND FACILITIES AND HAULING ROUTES

1.14 QUALITY ASSURANCE

1.15 LIFT BRIDGE OPERATIONS

1.15.1 General

1.15.2 Memorial Bridge

1.15.3 Sarah Mildred Long Bridge

1.16 COORDINATION

1.16.1 Daily Dredge Operations Location Map (DOLM)

1.16.2 Public Notice

1.16.3 Coast Guard

1.16.4 Notice to Mariners

SECTION 01 11 00 Page 1

1.16.5 Aids to Navigation

1.16.6 Points of Contact

1.17 GENERAL SAFETY REQUIREMENTS

1.17.1 General

1.17.2 Contractor's Project Superintendent

1.18 ENVIRONMENTAL PROTECTION

1.19 COORDINATION AND DIRECTION DURING CONSTRUCTION

1.20 PRECONSTRUCTION CONFERENCE

PART 2 PRODUCTS

PART 3 EXECUTION

-- End of Section Table of Contents --

SECTION 01 11 00 Page 2

SECTION 01 11 00

SUMMARY OF WORK

(AMENDMENT - SEPT 2021)

PART 1 GENERAL

1.1 PROJECT LOCATION

The Piscataqua River forms a portion of the state boundary between Maine and New Hampshire. Formed by the confluence of the Salmon Falls and Cocheco rivers, the Piscataqua River originates at the boundary of Dover, New Hampshire, and Eliot, Maine, and flows southeasterly for 13 miles to Portsmouth Harbor, comprising a partial border between the two states.

The last 8.8 miles of the Piscataqua River constitute Portsmouth Harbor, which stretches across New Castle, Portsmouth, and Newington, and the Maine communities of Kittery and Eliot.

Portsmouth Harbor, located at the mouth of the Piscataqua River, is about 45 miles northeast of Boston Harbor, Massachusetts, and 37 miles southwest of Portland Harbor, Maine.

1.2 PILOT AND PILOTAGE

a. All vessels, except pleasure or fishing vessels or vessels of 150 gross tons or under, are required to be piloted by a pilot appointed by the Pease Development Authority (PDA) into and out of the Piscataqua River and harbor.

b. PDA Appointed Pilots for Vessels Over 150 Gross Tons

(1) Each vessel of over 10,000 gross tons shall be piloted by a class I pilot as described in PDA 305.01(c).

(2) Each vessel from 150 to 10,000 gross tons shall be piloted by a class I or class II pilot as described in pilot and pilotage rules PDA 305.01(c).

(3) Pilot and pilotage rules can be found under "PDA 300 PILOT AND PILOTAGE RULES" at the following website:

https://peasedev.org/division-of-ports-harbors/#pilotPilotage

c. The pilot may also be licensed through the U.S. Coast Guard with endorsement for class I Pilotage for the Piscataqua River.

1.3 MARINE TRAFFIC CONTROL AND COMMUNICATION

a. This project requires that all movements of the Contractor's plant and equipment and set-up within the confines of the channel and turning basin areas, and approaches to and from the harbor entrance, be continually coordinated with the Pease Development Authority (PDA), Division of Ports and Harbors and the U.S. Coast Guard. Points of contact are listed below.

b. The Contractor shall continually monitor the harbor's radio communications and shall establish and maintain radio communication

SECTION 01 11 00 Page 3 with PDA's traffic control dispatcher(s) and the U.S. Coast Guard for the duration of the project.

c. The Contractor will be required at times to stop work and move its plant and equipment to provide clearance within the channel or turning basin for marine traffic. Such movements shall be accomplished by the Contractor as quickly as possible in the interest of marine safety.

1.4 WORK COVERED BY CONTRACT DOCUMENTS

1.4.1 General

a. The Base Bid work involves the dredging of ordinary shoaled material at the upper end of Portsmouth Harbor Federal Navigation Project (FNP) which includes the existing turning basin and a short portion of existing channel just prior to the existing turning basin; the dredging of ordinary and hard (rock) materials to expand the area of the aforementioned existing turning basin; and the disposal of dredged ordinary material and hard (rock) material at the Isles of Shoals North (IOS-N) Disposal Site. Refer to Contract Drawing sheet G-002 for location of dredging work at the upper end of the FNP.

(1) Prior to the start of construction, the Contractor shall become familiar with the project site.

(2) The Contractor shall be aware that the fast currents in the channel, typically 5 knots or greater, could potentially make the work difficult.

b. The project also includes Optional Bid work, that if awarded, will involve taking a specified volume from the total volume of the dredged ordinary material that was to be disposed of at the Isles of Shoals North (IOS-N) Disposal Site under the Base Bid and disposing of it at the Salisbury Nearshore Disposal Site (just offshore of Salisbury Beach in Massachusetts), and the Newbury Nearshore Disposal Site (just offshore of Plum Island in Massachusetts).

c. Due to environmental windows and the nature of the work, the time needed to complete the work may require two dredge seasons (2021/2022 and 2022/2023). Whether one or two dredge seasons will be necessary shall be left at the discretion of the Contractor and his means and methods chosen to complete the work. If the low bidder's price includes a second dredge season, the contract will be modified to extend the performance period an additional 364 days.

(1) The additional 364 days includes 196 calendar days of non-dredge days due to the environmental time of year restriction (No Dredge Season) of 2 April 2022 through 14 October 2022, and 168 calendar days of dredging and disposal from 15 October 2022 to 1 April 2023.

d. The description of the work as follows is general in nature and is only given to indicate the approximate scope of work under this contract. The general description below neither provides the work sequence (refer below to subparagraph titled "Work Sequence") nor the complete contract work as required under the Contract Drawings and Specifications. Location and description for each disposal site can be found in Section 35 20 23 MECHANICAL DREDGING.

e. The project description is further defined in the Contract Drawings

SECTION 01 11 00 Page 4 and Specifications.

1.4.2 Work Restrictions

a. The work described below must commence and be completed within specified environmental windows in order to minimize interference with, disturbance to, and damage to particular species of fish, marine mammals, birds, and other aquatic wildlife.

b. Refer to subparagraph titled "Environmental Windows" in Section 01 57 19 TEMPORARY ENVIRONMENTAL CONTROLS for designated environmental windows pertaining to dredging, drilling, blasting, and disposal work.

1.4.3 General Description of Work

1.4.3.1 BASE BI D I TEMS

Refer to Section 01 22 00 for a description and breakdown of what is part of the pricing for each Base Bid Item.

a. Mobilization and Demobilization

(1) Perform mobilization and demobilization as necessary to complete all base bid contract work in accordance with the contract documents.

(2) If the Contractor elects to include a second dredge season to complete the work, the costs associated with the second mobilization and demobilization will be included so that the total price for Base Bid Item 0001 is for two mobilizations and two demobilizations. Refer above to subpart c under subpart "General".

b. Dredging of Ordinary Material and Ocean Disposal Work

(1) Perform maintenance dredging work in the existing 35-foot federal navigation channel (from approximately Station 285+00 to Station 309+67) and the existing 35-foot turning basin (from Station 309+67 northwesterly), to the required depth of -35 feet Mean Lower Low Water (MLLW) with an allowable overdepth of two feet to -37 feet MLLW to remove approximately 2,300 cubic yards of shoaled ordinary material as indicated on the Contract Drawings and Section 35 20 23 MECHANICAL DREDGING. Shoaled material removed shall be loaded into scows, and transported to and disposed of at the Isles of Shoals North (IOS-N) Disposal Site. Disposal at the IOS-N shall be within the designated disposal target site titled "PORTSMOUTH/PISCATAQUA DISPOSAL TARGET 500 FT RADIUS" as shown on the sketch attached at at the end of this specification section.

The target site coordinates for this disposal location can be found in Section 35 20 23 MECHANICAL DREDGING under subparagraph "Unconfined Ocean Disposal Site".

(2) Perform improvement dredging to remove approximately 674,800 cubic yards of ordinary material within the lines of the specified expanded footprint to the required depth of -35 feet MLLW with an allowable overdepth of two feet to -37 feet MLLW and dispose of dredged ordinary material at the Isles of Shoals North (IOS-N) as indicated on the Contract Drawings and as specified in Section 35 20 23 MECHANICAL DREDGING. Disposal at the IOS-N shall be within the designated disposal target site titled "PORTSMOUTH/PISCATAQUA DISPOSAL TARGET 500 FT RADIUS" as shown on

SECTION 01 11 00 Page 5 the sketch attached at the end of this specification section. The target site coordinates for this disposal location can be found in Section 35 20 23 MECHANICAL DREDGING under subparagraph "Unconfined Ocean Disposal Site". Refer to Section 00 32 00 GEOTECHNICAL DATA for soil classification and definition for the types of ordinary material to be encountered during dredging operations.

(3) Perform contractor quality control progress survey(s) in accordance with Section 01 71 23 FIELD ENGINEERING FOR DREDGING.

(4) Quantity of ordinary material to be removed as noted above under subparts (1) and (2) includes both the required depth and overdepth quantities.

c. Dredging of Hard (Rock) Material and Ocean Disposal Work

(1) Perform dredging and pre-treatment, if necessary, to remove approximately 14,700 cubic yards of hard (rock) material to a depth of -37 feet MLLW with an allowable overdepth of two feet to -39 feet MLLW by using mechanical means (such as hoe-ramming, ripping, or splitting) or drilling and blasting, or a combination of methods to the specified depths. The Contractor is encouraged to utilize hard (rock) material removal techniques that will limit the amount of blasting required for this project. The Contractor shall be aware that drilling and confined blasting of the hard (rock) material may require underwater diving; refer to Section 35 25 00 UNDERWATER DIVING WORK. Before commencing with any underwater blasting, all pre-construction submittals including pre-rock removal surveys shall be submitted and approved, all necessary permits and licenses shall be obtained and submitted, all vibration monitoring equipment and hydroacoustic and underwater pressure monitoring equipment shall be installed, and any other necessary documents, coordination, or inspections that needs to take place prior to blasting shall be completed. The Contractor shall coordinate all pre-blasting and blasting work with the Contracting Officer and the Pease Development Authority Harbormaster. Quantity of hard (rock) material noted above includes both the required depth and overdepth quantities.

(2) Once hard (rock) material has been pre-treated using mechanical methods and/or drilling and blasting, the Contractor shall use mechanical equipment to remove and load the hard (rock) material onto scows/barges, and transport it to and dispose of it at the Isles of Shoals North (IOS-N) Disposal Site. Disposal at the IOS-N shall be within the designated disposal target site titled "ROCK PLACEMENT AREA 500 FT RADIUS" as shown on the sketch attached at the end of this specification section. The target site coordinates for this disposal location can be found in Section 35 20 23 MECHANICAL DREDGING under subparagraph "Unconfined Ocean Disposal Site". Refer to Section 00 32 00 GEOTECHNICAL DATA for classification and definition for the hard (rock) material.

(3) Perform progress survey(s) in accordance with Section 01 71 23

FIELD ENGINEERING FOR DREDGING.

d. If the Optional Bid Item IS NOT AWARDED, the general description of the work stops here and the total volume of 674,800 cubic yards of

SECTION 01 11 00 Page 6 ordinary material dredged from the turning basin expansion area shall be transported to and disposed of at Isles of Shoals North (IOS-N) Disposal Site.

e. If the Optional Bid Item IS AWARDED, the general description of the work is continued below under subpart titled "Optional Bid Item" and becomes part of this contract. With the award of the Optional Bid Item, the footprint for the turning basin expansion area will be broken up into three regions, R1 through R3; refer to Detail C7 on Contract Drawing sheet C-101 for designation of each region within the turning basin expansion area.

1.4.3.2 OPTI ONAL BI D I TEM

Refer to Section 01 22 00 for a description and breakdown of what is part of the pricing for the Optional Bid Item.

a. Mobilization and Demobilization

(1) Perform mobilization and demobilization as necessary to complete the work to transport and dispose of dredged ordinary at the Salisbury and Newbury Nearshore Disposal Sites.

b. Transport and Dispose of Ordinary Material at Neashore Disposal Sites

(1) All dredging work to remove specified volume of ordinary material from Region R1 will be paid for under Base Bid Item 0002.

(2) Load scows and transport 300,000 cubic yards of ordinary material removed from Region R1, as measured in place at the dredge site, and dispose of the 300,000 cubic yards at the nearshore disposal sites. Of the 300,000 cubic yards, dispose approximately 50 percent of it at the Salisbury Nearshore Disposal Site (just offshore of Salisbury Beach in Massachusetts) and approximately 50 percent of it at the Newbury Nearshore Disposal Sites (just offshore of Plum Island in Massachusetts). Note to Bidder: All dredging work shall be paid for under Base Bid Item 0002.

(a) The remaining volume of dredged ordinary material removed from Region R1, approximately 170,600 cubic yards, shall be transported to and disposed of at the Isles of Shoals North (IOS-N) Disposal Site and paid for under Base Bid Item 0002.

(b) Material removed from Region R2 (21,900 cubic yards) and Region R3 (182,300 cubic yards) shall be transported to and disposed of at the Isles of Shoals North (IOS-N) Disposal Site and paid for under Base Bid Item 0002.

(3) Refer to sketch, titled "Nearshore Disposal Site Locations", attached at the end of Section 35 20 23 MECHANICAL DREDGING. For target site coordinates and disposal requirements for each nearshore disposal site refer to subpart titled "Nearshore Disposal Sites" Section 35 20 23 MECHANICAL DREDGING.

1.5 REFERENCES

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

SECTION 01 11 00 Page 7

U.S. ARMY CORPS OF ENGINEERS (USACE)

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

U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)

33 CFR 117.11 Unnecessary Opening of The Draw

33 CFR 117.531 Piscataqua River

1.6 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Initial Project Schedule ; G, RO

In accordance with the contract clauses, the Contractor shall, within 5 days after receipt of Notice to Proceed (NTP) or as otherwise determined by the Contracting Officer, submit for approval a practicable project schedule. When changes are authorized that result in contract time extensions, the Contractor shall submit a revised project schedule for approval by the Contracting Officer.

Pre-Dredging Photographic Survey ; G, RO

The Contractor shall submit a pre-dredging photographic survey as described in this section.

Public Notice ; G, RO

Submit a copy of the proposed wording of the Public Notice to the Contracting Officer for approval.

Notice to Mariners

Submit a copy of Notice to Mariners to the Contracting Officer.

Aids to Navigation

Submit proof of coordination with the USCG for any necessary relocation or movement of aids to navigation.

Safe Harbor Plan ; G, RO

The Contractor shall submit a Safe Harbor Plan to the Contracting Officer for approval prior to the start of on-site work. The Safe Harbor Plan shall include a written description of the Contractor's plan to provide for the safety and security of floating plant, equipment, and personnel in the event of a storm or other site emergency. The location for the docking of floating

SECTION 01 11 00 Page 8 plant and the off-loading of equipment and crews shall be clearly indicated.

Utility Plan

SD-07 Certificates

Periodic Schedule Updates ; G, RO

1.7 PROJECT SITE CONDITIONS

1.7.1 Physical Data

Data and information furnished or referred to below is for the Contractor's information. The Government shall not be responsible for any interpretation of or conclusion drawn from the data or information by the Contractor.

a. Site Conditions: The indications of physical conditions on the drawings and in the specifications are the result of site investigations and surveys. The conditions represented prevailed at the time the investigations and surveys were made. A pre-dredge survey may be performed by the Government prior to the start of Contractor dredging operations at the site. Before commencing work at the site, the Contractor shall verify the existing conditions indicated on the drawings and in the specifications. See CONTRACT CLAUSE entitled "SITE INVESTIGATION AND CONDITIONS AFFECTING THE WORK".

b. Weather Conditions: Weather conditions for the site may be obtained by the Contractor from the National Oceanic and Atmospheric Administration's National Weather Service; www.NOAA.gov.

c. Tide Conditions: The mean tidal range in the project area is 6.4 feet mean higher high water (MHHW) to mean lower low water (MLLW). Tidal currents in the dredging areas are extremely strong and are typically 5 knots or greater. The site of the work is sheltered from the worst effects of coastal storms. Predicted times and heights of tides for each day of the year can be obtained from the National Oceanic and Atmospheric Administration, National Ocean Service, "Tidal Current Tables, Atlantic Coast of North America."

d. Transportation facilities: The Contractor shall make its own investigations on the use of local, State and Federal highways, roads, streets, bridges, and waterways.

e. Conditions of Channel: The Federal Navigation Channel was last maintained in 2013. Soundings shown on the Contract Drawings are the results of surveys conducted during the time period indicated on the Contract Drawings and are believed to indicate existing conditions.

f. Channel Traffic:

(1) Portsmouth Harbor is used extensively by deep draft vessels including petroleum tankers with drafts of 30 to 36 feet, a large lobstering fleet, charter fishing vessels, commercial fishermen, excursion boats to the Isles of Shoals situated nine miles offshore, and local and transient boats based at or visiting the nearly 20 boating facilities in the area. The harbor is also used by submarines from the Portsmouth Naval Shipyard in Kittery and for fuel deliveries

SECTION 01 11 00 Page 9 to Pease International Tradeport in Newington.

(2) The Government will not undertake to keep the channel free from vessels or other obstructions, except to the extent of applicable regulations. The Contractor shall conduct the work in such a manner as to obstruct navigation as little as possible, and in the event the Contractor's plant so obstructs the channel as to make difficult or endanger the passage of any vessels, the plant shall be promptly moved on the approach of any vessel to such an extent as may be necessary to afford a practicable passage.

(3) Daily channel traffic and vessel movements shall be coordinated with the Pease Development Authority (PDA), Division of Ports and Harbors and the US Coast Guard as specified above under part "MARINE

TRAFFIC CONTROL AND COMMUNICATION".

g. Utilities:

(1) A 30-inch diameter steel natural gas pipeline exists within the work area between stations 286+00 and 288+00; depth of pipeline ranges between 120 to 135 feet below Mean Lower Low Water (MLLW).

(2) The Contractor shall also make its own investigation and conduct utility research concerning other utility lines crossing the channel along the route from the harbor entrance to the turning basin and in areas to be dredged. Submit to the Contracting Officer a Utility Plan showing all utilities found as a result of investigation and utility research.

h. Bridges: The Contractor's plant and equipment will be required to pass under bridges, two of which are lift bridges, along the channel enroute to the project work site. Refer below to paragraph titled

"LIFT BRIDGE OPERATIONS".

1.8 WORK COMMENCEMENT AND COMPLETION REQUIREMENTS

a. To ensure immediate readiness to commence with dredging under this contract within 30 calendar days after the date the Contractor receives the Notice to Proceed (NTP), the Contractor shall commence on preliminary contract administrative work by promptly placing all orders, awarding subcontracts, and preparing, processing, and submitting a project schedule and all other required submittals and details.

b. Complete the entire work ready for use on or before 1 April 2022 (if contract is set up for one dredge season) or 1 April 2023 (if contract is set up for two dredge seasons). Refer above to subpart "General" under part "WORK COVERED BY CONTRACT DOCUMENTS" for information pertaining to number of dredge seasons. The time stated for completion shall include final cleanup of the premises and demobilization.

1.9 WORK SEQUENCING AND SCHEDULING

1.9.1 Work Sequence

There are certain essential criteria relative to the preparation of a work sequence and time schedule which the Contractor will be required to implement and follow during the prosecution of the work. Minor variations

SECTION 01 11 00 Page 10 in the sequence of the items of work as approved may be made by the Contractor, provided such variations do not conflict with critical elements of the schedule. Proposed minor variations shall be noted on the progress charts submittal required by CONTRACT CLAUSE, entitled "SCHEDULES FOR CONSTRUCTION CONTRACTS." Variations shall be approved by the Contracting Officer prior to implementation.

1.9.1.1 Base Bid Items with Optional Bid Item NOT AWARDED

If the Optional Bid Item IS NOT AWARDED, the work sequence to complete the dredging and disposal work shall be as follows:

a. Remove ordinary material (overburden) to expose top and sides of hard (rock) material to -39 feet MLLW. Transport to and dispose of dredged ordinary material at the Isles of Shoals North (IOS-N) Disposal Site.

The Contractor shall choose its means and methods to remove as much ordinary material from top and around hard (rock) material footprint such that it allows for enough exposure of hard (rock) material to survey the top and sides of hard (rock) material to an elevation of at least -39 feet MLLW (refer to cross-sections C and D on sheet C-301).

b. Upon completing the removal of overburden and material from around footprint of hard (rock) material, and prior to the removal of hard (rock) material, perform a pre-rock removal survey of the exposed hard (rock) material, to include top and all sides of hard (rock) material to -39 feet MLLW. Perform survey and submit results of survey to the Contracting Officer as specified in Section 01 71 23 FIELD ENGINEERING

FOR DREDGING.

(1) Prior to any hard (rock) material removal the Government will also perform an independent pre-rock removal survey. The Contractor shall not proceed with any hard (rock) material removal until the Government's pre-rock removal survey has been completed and the notice to proceed with the hard (rock) material removal has been given by the Contracting Officer.

(2) The Contractor shall provide the Government with at least 72 hours notice that exposed hard (rock) material is ready to be surveyed.

(3) After pre-rock removal survey is complete, the sequencing order to prep and remove the hard (rock) material to the specified depths and transport it to and dispose of it at the Isles of Shoals North (IOS-N) Disposal Site is at the discretion of the Contractor. The order of which the removal and disposal fits into the schedule must comply with and be completed within the environmental windows.

c. The sequence of work from this point on to complete all contract work shall be at the Contractor's discretion with acceptance by the Contracting Officer.

d. Request after dredge survey, perform clean-up, any remaining close-out requirements in accordance with the Contract Documents, and demobilize.

1.9.1.2 Base Bid Items with Optional Bid Item AWARDED

If the Optional Bid Item IS AWARDED, the work sequence to complete the dredging and disposal work shall be as follows.

a. Remove ordinary material (overburden) from within Region R1 to expose

SECTION 01 11 00 Page 11 top and sides of hard (rock) material to -39 feet MLLW. Transport dredged ordinary material removed from top of hard (rock) material and dispose of it at the nearshore disposal sites. The Contractor shall choose its means and methods to remove as much ordinary material from top and around hard (rock) material footprint such that it allows for enough exposure of hard (rock) material to survey the top and sides of hard (rock) material to an elevation of at least -39 feet MLLW (refer to cross-sections C and D on sheet C-303).

b. Upon completing the removal of overburden and material from around footprint of hard (rock) material, and prior to the removal of hard (rock) material, perform a pre-rock removal progress Contractor Quality Control Survey of the exposed hard (rock) material, to include top and all sides of hard (rock) material to -39 feet MLLW. Perform survey and submit results of survey to the Contracting Officer as specified in Section 01 71 23 FIELD ENGINEERING FOR DREDGING.

(1) Prior to any hard (rock) material removal the Government will also perform an independent pre-rock removal survey. The Contractor shall not proceed with any hard (rock) material removal until the Government's pre-rock removal survey has been completed and the notice to proceed with the hard (rock) material removal has been given by the Contracting Officer.

(2) The Contractor shall provide the Government with at least 72 hours notice that exposed hard (rock) material is ready to be surveyed.

(3) After pre-rock removal survey is complete, the sequencing order to prep and remove the hard (rock) material to the specified depths and transport it to and dispose of it at the Isles of Shoals North (IOS-N) Disposal Site is at the discretion of the Contractor. The order of which the removal and disposal fits into the schedule must comply with and be completed within the environmental windows.

c. After pre-rock removal survey is complete and accepted by the Contracting Officer, continue transporting the dredged ordinary material removed from Region R1 and disposing of it at each nearshore disposal site until the total specified volume to each, as noted above in subpart "General Description of Work" under subpart titled "Optional Bid Item", has been completed.

d. After completing the disposal of the total specified volume of dredged ordinary material at each nearshore disposal site, perform a progress Contractor Quality Control Survey of the dredged area within Region R1 and submit results of survey to the Contracting Officer as specified in Section 01 71 23 FIELD ENGINEERING FOR DREDGING. The "dredged area" to be surveyed within Region R1 shall be the area where the 300,000 cubic yards of material was removed from and disposed of at the nearshore disposal sites.

e. After progress survey of "dredged area" within Region R1 is completed and accepted by the Contracting Officer, remove remaining volume of ordinary material from Region R1, and all ordinary material from Regions R2 and R3, and transport and dispose of the dredged ordinary material at the Isles of Shoals North (IOS-N) Disposal Site.

f. Request after dredge survey, perform clean-up, any remaining close-out requirements in accordance with the Contract Documents, and demobilize.

SECTION 01 11 00 Page 12

1.9.2 Hours of Operations

a. The Contractor will be allowed under this contract to perform non-blasting work 24 hours per day, 7 days per week, including holidays.

b. The Contractor will be allowed to perform blasting work 7 days per week, including holidays. Blasting shall be confined to daylight hours during the period from 2 hours after sunrise to 1 hour before sunset but shall not be conducted before 9:00 A.M. or after 6:00 P.M.

on the day of blasting. Blasting shall not be conducted when temperature inversions or heavy, low-level cloud cover exists.

c. Dredging, blasting, and transportation and disposal work shall be performed within the allowable environmental windows as specified in Section 01 57 19 TEMPORARY ENVIRONMENTAL CONTROLS, part "SPECIAL

ENVIRONMENTAL REQUIREMENTS".

1.9.3 Scheduling

a. The Contractor shall fully and continually coordinate all work with the Pease Development Authority Harbormaster.

1.9.3.1 Initial Project Schedule

The initial project schedule shall be in the form of a chart graphically indicating the sequence proposed to accomplish each work feature or operation pursuant to FAR Clause 52.236-15 "Schedules for Construction Contracts". The chart shall be prepared to show the starting and completion dates of all work features on a linear horizontal time scale beginning with date of Notice to Proceed and indicating calendar days to completion. The Contractor shall indicate on the chart the important work features or operations that are critical to the timely overall completion of the project. Key dates for such important work features and portions of work features are milestone dates and shall be so indicated on the chart. This schedule will be the medium through which the timeliness of the Contractor's construction effort is appraised. Anticipated adverse weather delay days shall be included and clearly indicated in the schedule. Failure to develop the Project Schedule to an appropriate level of detail will result in its disapproval.

All work shall be carefully scheduled to prevent delays and any excessive interruptions with channel traffic.

1.9.3.2 Periodic Schedule Updates

An updated schedule showing actual progress shall be submitted monthly and with each pay request. Changes to the base-line schedule shall be outlined in a narrative describing the reason for the change.

1.9.4 Rate of Progress

a. Employ ample personnel and sufficient equipment to accomplish the work of this contract in the least amount of time, within the prosecution period specified in the Special Contract Requirements.

b. Prosecute the work diligently, and maintain a dredge production rate, based on working 24 hours a day, 7 days a week, of not less than 176,000 cubic yards for each 30 calendar day period of actual dredging

SECTION 01 11 00 Page 13 work at the site.

c. Should the Contractor fail to maintain the required rate of progress, the Contracting Officer may require that additional personnel and equipment be placed on the work, in order that the work be brought up to schedule and maintained at no additional cost to the Government.

See Subpart WORK COVERED BY CONTRACT DOCUMENTS for additional information.

1.10 PRE-DREDGING PHOTOGRAPHIC SURVEY

The Contractor shall perform a pre-dredging photographic survey at the project site with the Contracting Officer. This pre-dredging photographic survey shall include still photographs and videos in sufficient quantity to fully document the existing condition of all, as applicable, bulkheads, piers, piles, fenders, and other shorefront structures and features within and adjacent to areas to be dredged as part of this contract. A written narrative shall be prepared by the Contractor which organizes and summarizes the findings of the pre-dredging survey photographs and videos. The narrative shall separately organize all items by individual owners. The condition of each item shall also be documented in writing.

The written narrative, together with the photographs and videos, shall constitute a "Pre-Dredging Photographic Survey Report", which shall be submitted to the Contracting Officer for approval. No on-site dredging work shall be performed until this "Pre-Dredging Photographic Survey Report" has been approved. Damage to features caused by the Contractor's operations shall be repaired by the Contractor at no additional expense to the Government.

1.11 SUPERINTENDENCE BY THE CONTRACTOR

a. At all times during the performance of the contract and until the work is completed and accepted, the Contractor shall directly superintend the work or assign and have on the worksite a competent project superintendent who is satisfactory to the Contracting Officer and has the authority to act for the Contractor.

b. The qualified superintendent, and competent alternate, shall be capable of reading, writing, and conversing fluently in the English language.

c. The project superintendent must have a minimum of 10 years experience in marine work with at least 5 of those years as a superintendent on projects similar in size and complexity. The individual must be familiar with the requirements of EM 385-1-1 and have experience in the areas of hazard identification and safety compliance. The individual must be capable of interpreting a critical path schedule and construction drawings. The qualification requirements for the alternate superintendent are the same as for the project superintendent. The Contracting Officer may request proof of the superintendent's qualifications at any point in the project if the performance of the superintendent is in question.

d. The project superintendent is primarily responsible for managing and coordinating day-to-day production and schedule adherence on the project. The superintendent is required to attend all partnering meetings and quality control meetings.

e. The project superintendent shall maintain a physical presence at the

SECTION 01 11 00 Page 14 site at all times and be responsible for all construction and related activities at the site, except as otherwise acceptable to the Contracting Officer.

f. The Project Superintendent is subject to removal by the Contracting Officer for non-compliance with requirements specified in the contract and for failure to manage the project to insure timely completion.

Furthermore, the Contracting Officer may issue an order stopping all or part of the work until satisfactory corrective action has been taken. No part of the time lost due to such stop orders is acceptable as the subject of claim for extension of time for excess costs or damages by the Contractor.

g. The project superintendent may neither serve as the Site Safety and Health Officer (SSHO) nor the Contractor Quality Control (CQC) System Manager.

1.12 WORK SITE AND CONTRACTOR'S USE OF PREMISES

1.12.1 General

All rules, regulations, and requirements covering such items as, but not limited to, general safety, security, sanitary requirements, environmental protection, pollution control, and traffic regulations shall be observed by the Contractor.

1.12.2 Staging and Storage Areas

Refer to Section 01 50 00 TEMPORARY CONSTRUCTION FACILITIES AND CONTROLS for dredging and disposal work at IOS-N and the nearshore disposal sites.

1.12.3 Work Limits

The limits of work are the Federal Channel and Turning Basin and the limits of the turning basin expansion. Specific dredging areas and side slope areas within these limits shall be dredged to obtain the required depths and side slopes as shown on the Contract Drawings and as specified in Section 35 20 23 MECHANICAL DREDGING.

1.12.4 Access to Work Site

Prior to the start of work, the Contractor shall ensure that the Government has access to the project site. Access to the project site will be discussed at the Preconstruction Conference.

1.12.5 Protection and Security

a. Protection to Contractor personnel or their equipment cannot be provided at the worksite by the Government.

b. The Contractor shall protect all its personnel, Government personnel, and the general public from injury.

c. The Contractor shall conduct all its work so as to prevent injury or unsafe conditions during construction.

d. The Contractor shall report any vandalism, suspicious activities, or devices to the Contracting Officer and local police as soon as possible.

SECTION 01 11 00 Page 15

1.12.6 Work By Other Contractors

Work by other contractors is not anticipated to occur during the performance period of this contract. However, the Contractor must be aware that the Portsmouth Harbor will maintain full operations during construction and usage of channel and turning basin must be coordinated with the harbor master at all times. Refer above to subparagraph "Channel Traffic".

1.12.7 Emergency Contacts

The Contractor shall provide a list of emergency contacts in the event of an emergency. The list shall include the contact names, addresses, and telephone numbers. As changes occur and additional information becomes available, correct and change the information contained in previous lists.

1.12.8 Damaged Property

Work shall proceed in a manner which will minimize disturbance or risk of damage to boats, structures, and surrounding lands. The Contractor shall repair such items damaged in the course of carrying out the work at no additional cost to the Government. All repairs shall match similar existing items in all aspects. All replacements shall be in kind.

1.12.9 Contractor's Receipt of Supplies

The Contractor shall be responsible for all arrangements for the receipt of materials and supplies at the job site. Government personnel are not permitted to receive or sign for items delivered to the site.

1.12.10 Daily Clean Up

The Contractor shall at all times keep rubbish from entering surrounding lands and water. Rubbish accumulated at the temporary facilities shall be removed from the premises daily.

1.12.11 Government Sanitary Facilities

Toilet facilities are not available on site for Contractor's use. The Contractor shall provide portable toilets for its personnel and subcontractors as specified in EM 385-1-1 under Section 2, Sanitation.

1.13 CONTRACTOR'S USE OF UPLAND FACILITIES AND HAULING ROUTES

a. Unless obtained by the Government or specified otherwise in the contract documents, the Contractor shall be responsible for the following:

(1) Locating, coordinating, and obtaining permission to use any land-based water access (docks, piers, ramps, etc.) that the Contractor deems necessary to complete the work.

(2) Determining, if necessary, the trucking and hauling routes and associated restrictions to and from the work, to include the coordination for the use of such routes with local, state, and federal authorities.

(3) Complying with all local, state, and federal regulations and

SECTION 01 11 00 Page 16 restrictions when using any upland facilities or hauling routes.

b. The Government and its representatives will be allowed the use of the same land-based water access obtained by the Contractor.

1.14 QUALITY ASSURANCE

a. All items of work not addressed in the contract documents shall be completed in strict accordance with the manufacturers’ specifications.

b. The Government is not obligated to inspect the Contractor’s work, or to protect the Contractor from the consequences of its work.

Government inspections are a general examination of the Contractor’s conduct and workmanship and are solely for the purpose of the Government. Government-designated Quality Assurance Representatives (QARs) do not have the authority to accept work, nor is a Government inspection to be construed as conclusive.

c. Government agents including QARs and project engineers are not authorized to change the contract without the written approval of the Contracting Officer; this lack of authority extends to all situations in which the action of these agents could be construed as constituting a change.

d. The quality of workmanship is subject to audit by Government or Government-designated QARs at any time during the contract. The Contractor shall cooperate fully and provide all information necessary for this audit.

e. The Contractor shall submit all requests for changes in writing to the Contracting Officer. Do not proceed with changes without possession of written authorization of the Contracting Officer.

f. The Contractor shall not conceal any work unless the Contracting Officer has approved all items of work which are to be concealed. The Contractor shall notify the Contracting Officer of its intention to conceal work at least 24 hours in advance of concealment.

1.15 LIFT BRIDGE OPERATIONS

1.15.1 General

a. The Contractor shall determine how the clearance, tide range, and the lift bridge operational practices will impact its work and reflect this on the Project Schedule.

b. It is the Contractor's responsibility before submitting a bid and during the work to confirm the latest bridge opening schedule.

c. In accordance with 33 CFR 117.531 , the following requirements shall apply to all bridges across the Piscataqua River:

(1) Public vessels of the United States, commercial vessels over 100 gross tons, inbound ferry service vessels and inbound commercial fishing vessels must be passed through the drawspan of each drawbridge as soon as possible. The opening signal from these vessels is four or more short blasts of a whistle, horn or a radio request.

(2) Trains and locomotives will be controlled so that any delay in

SECTION 01 11 00 Page 17 opening the draw shall not exceed five minutes. However, if a train moving toward the bridge has crossed the home signal for the bridge before the signal requesting opening of the bridge is given, that train may continue across the bridge and must clear the bridge interlocks before stopping.

(3) Except as provided below under subparagraphs "Memorial Bridge" and "Sarah Mildred Long Bridge" the draws shall open on signal.

(4) In accordance with 33 CFR 117.11 , no vessel owner or operator shall:

(a) Signal a drawbridge to open if the vertical clearance is sufficient to allow the vessel, after all lowerable nonstructural vessel appurtenances that are not essential to navigation have been lowered, to safely pass under the drawbridge in the closed position; or

(b) Signal a drawbridge to open for any purpose other than to pass through the drawbridge opening.

1.15.2 Memorial Bridge

a. The Memorial Bridge (US Route 1), which passes over the Piscataqua River, between Portsmouth, New Hampshire and Kittery, Maine, is in the work area of this project. The work of the project will require that Contractor plant and equipment pass under this bridge. At Mean High Water (MHW) the bridge has a 21 foot vertical clearance when draw is seated at vehicular level and a 150 foot vertical clearance when draw is open.

b. The Memorial Bridge is owned and operated by the New Hampshire Department of Transportation (NHDOT). The draw of the Memorial bridge will open on signal; except that from 15 May through 31 October, from 7 am to 7 pm, the draw need be opened only on the hour and half hour for recreational vessels and commercial vessels less than 100 gross tons except as provided under subparagraph "General", subpart c(1) above.

1.15.3 Sarah Mildred Long Bridge

a. The Sarah Mildred Long Bridge (US Route 1 Bypass), which passes over the Piscataqua River connecting New Hampshire and Maine, is in the work area of this project. The work of the project will require that Contractor plant and equipment pass under this bridge. At Mean High Water (MHW) the bridge has a 16 foot vertical clearance when draw is lowered to railroad level to allow for train passage and a 56 foot vertical clearance when draw is seated at vehicular level.

Ninety-nine percent of the time the draw will most likely be seated at the vehicular level.

b. The Sarah Mildred Long Bridge is owned and operated by the Maine and New Hampshire Department of Transportation (NHDOT). The draw of the Sarah Mildred Long Bridge operates as follows:

(1) The main ship channel draw will open on signal; except that from 15 May through 31 October, from 7 am to 7 pm, the draw need be opened only at quarter of and quarter after the hour for recreational vessels and commercial vessels less than 100 gross tons except as provided

SECTION 01 11 00 Page 18 under subparagraph "General", subpart c(1) above. The draw will always open on call for commercial vessels over 100 gross tons.

(2) The secondary recreation draw will be left in the fully open position from 15 May through 31 October except for the crossing of a train in accordance with subparagraph "General", subpart c(2) above.

1.16 COORDINATION

1.16.1 Daily Dredge Operations Location Map (DOLM)

The Contractor shall prepare a Dredge Operations Location Map (DOLM) for each day that dredging activities are planned for this project. The DOLM shall indicate the locations where dredge(s) shall be working during a specific 24 hour period, planned scow activity, and other significant activities planned. The DOLM shall be prepared in PDF format and forwarded to the parties indicated on a distribution list that will be provided to the Contractor after receipt of the Notice to Proceed. An example of a DOLM is attached at the end of this specification section.

All information shown on the example is required for each DOLM prepared, including vessel information, location, maps, channel stations, etc. The DOLM's shall be prepared and distributed a minimum of 24 hours prior to the start of the period addressed in the specific DOLM.

1.16.2 Public Notice

The public shall be notified of this dredging project approximately two weeks before commencement of dredging operations at the site. A brief description of the work to be performed and the intended schedule of dredging and disposal operations shall be published in a newspaper of general circulation in the area adjacent to the dredging. The notice shall include the locations where the work is to be performed, the time sequence of events, a map of the haul route to be followed between the dredging areas and the disposal site with reference to the width of the haul lane, the location and limits of the disposal site, and the procedure the Contractor will use to respond to claims of loss of fishing gear during the hauling work. The notice shall include the Contractor's point of contact and telephone number.

1.16.3 Coast Guard

All work conducted in areas in or adjacent to the ship channel and turning basin shall be coordinated with the U.S. Coast Guard.

1.16.4 Notice to Mariners

Prior to the start of dredging operations, the Contractor shall coordinate with the U.S. Coast Guard (USCG) to issue a "Notice to Mariners" regarding the work to be performed and the Contractor's proposed operations.

The Corps of Engineers and the USCG have agreed to phraseology when issuing navigational bulletins and notices. The information furnished shall be consistent with USCG Broadcast Notice to Mariners and Local Notice to Mariners. When requesting local USCG offices to issue navigational information for Corps of Engineers work involving marine construction, the following terminology shall be used, as applicable:

For cautionary areas: "Mariners are urged to use extreme caution in the area."

SECTION 01 11 00 Page 19

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

1.16.5 Aids to Navigation

Aids to navigation (beacons, buoys, markers, etc.) have been placed by the USCG in the vicinity of the project area. The Contractor shall not remove, change the location of, obstruct, willfully damage, make fast to, or interfere with these aids to navigation. If the work of this project requires the temporary movement or relocation of any aid to navigation, the Contractor shall notify the USCG and the Contracting Officer in writing of the requirement 30 days in advance. USCG personnel will then move or relocate the aid to navigation as appropriate for the progress of the work. Under no circumstances shall the Contractor move or relocate an aid to navigation under his own authority with his own personnel. The Contractor shall also contact the USCG at the completion of all work and the removal of all marine plant.

1.16.6 Points of Contact

a. Coast Guard:

(1) Aids to Navigation:

Mr. John Mauro Office Telephone: 617-223-8355 email: john.j.mauro@uscg.mil

Mr. Matthew Stuck Office Telephone: 617-223-8365 email: matthew.b.stuck@uscg.mil

(2) Notice to Mariners:

Ms. Mary F. Swanson Office Telephone: 617-223-8356 email: mary.f.swanson@uscg.mil

b. Pease Development Authority, Division of Ports and Harbors 555 Market Street, Portsmouth, NH…