26-8633_Exhibit_J_-_Wiggins_Pass_Dredge_2026_-_Tech_Specs_-_12.16.25_-_SS.pdf

Technical Specifications Page 1 of 20

TECHNICAL SPECIFICATIONS

COLLIER COUNTY

Wiggins Pass Maintenance Dredging Project

December 11, 2025

Section Page TS-1.0 Definitions TS-2.0 Scope of Work TS-3.0 Permits TS-4.0 Pre-construction Submittals and Meetings TS-5.0 Order of Work TS-6.0 Layout of the Work TS-7.0 Record Drawings and Daily Reports TS-8.0 Site Conditions TS-9.0 General Notes TS-10.0 Dredging TS-11.0 Nearshore Disposal and Beach Fill TS-12.0 Surveys and Payment TS-13.0 Project Completion TS-14.0 Environmental Protection

Appendix A Regulatory Permits and Associated DEP QA/QC Plan Appendix B Contract Drawings

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TS-1.0 Definitions.

TS-1.1 The following terms and abbreviations used in these Technical Specifications shall be defined as:

Contract Drawings Construction Plans prepared by ENGINEER.

CONTRACTOR Those parties selected and duly authorized by the OWNER to conduct the work contained herein.

COUNTY Collier County, its employees or designees as appropriate.

CY Cubic yard.

DEP State of Florida Department of Environmental Protection.

ENGINEER Humiston and Moore Engineers, P.A., its employees or designees as appropriate.

NTP Notice to Proceed

OWNER Collier County, its employees or designees as appropriate.

PARK Delnor-Wiggins Pass State Park, its employees or designees.

PROJECT Wiggins Pass Maintenance Dredging Project

Sand Beach compatible dredge and fill material as specified in Rule 62B-

41.007(2)(j) of the Florida Administrative Code (F.A.C.)

USACE United States Army Corps of Engineers

USCG United States Coast Guard

TS-2.0 Scope of Work.

TS-2.1 The Work consists of furnishing all labor, materials, and equipment, and performing all tasks necessary for the construction of the following project:

WIGGINSS PASS Maintenance Dredge Project located near the inlet portion of the main channel for Wiggins Pass in Collier County, Florida. The Contract Drawings show dredging approximately 75,000 CY of sand from a portion of the authorized main channel template from Station 11+00 east to Station C-10, approximately 2,500 CY from east channel located from station C-20 east to C-23, and another approximately 4,200 CY from the south channel ranging from the main channel south to Station C-32, and placement of the sand on the beach and in the nearshore south of Wiggins Pass along Delnor-Wiggins State Park from DEP reference monument R-18 to R-20. The

Technical Specifications Page 3 of 20 final determination of the quantity of sand to be dredged and/or placed on the beach will be based on a pre-construction survey conducted by the CONTRACTOR

TS-2.2 The Work must be completed according to the Contract Drawings and these Technical Specifications within the time specified in the contract and in compliance with the conditions of all federal, state, and local permits, including permits from Collier County, DEP, USACE, and USCG. Work conducted after April 15, 2026, which represents the early start of the sea turtle nesting season for Collier County beaches, will require daily clearance from the marine turtle monitor for Collier County. Sea turtle nesting season ends October 31st. Work conducted on the beach between February 15th and August 31st requires daily clearance from the County’s shorebird monitor.

TS-2.3 The CONTRACTOR is solely responsible for all construction means, methods, techniques, and procedures including construction layout and staking, monitoring and recording of dredge depths, maintaining as-built drawings, monitoring turbidity and maintaining water quality, and the sequence of the Work as specified in Section TS-5.0.

TS-2.4 The CONTRACTOR shall use a 12” (minimum inside diameter) and a 12” (minimum freeboard), or preferably larger, hydraulic dredge with the ability to pump material 5,000 feet and the ability to complete the work in the existing water depths and inlet conditions including currents and waves. The CONTRACTOR must clearly demonstrate that the equipment to be used is capable of completing the Work. This includes providing specific references and productions rates for the equipment to be used for this Work. CONTRACTOR must have and demonstrate experience with the scale of the proposed dredging and disposal Work presented herein and work in conditions similar to the site conditions presented herein and at the time of year in which the work will be conducted.

TS-3.0 Permits.

TS-3.1 CONTRACTOR is responsible for obtaining any and all local permits, including any application fees associated with any required local permit and authorization from USCG. The CONTACTOR is required to contact USCG a minimum of two weeks prior to project commencement. A copy of these permits must be submitted to the OWNER and ENGINEER prior to construction. The COUNTY will remain responsible for obtaining all state and federal authorizations.

TS-3.2 CONTRACTOR shall comply with all conditions of Federal, State and Local permits that have been obtained by OWNER, including those listed below and included in Appendix A.

1. Florida Department of Environmental Protection

2. U.S. Army Corps of Engineers

TS-4.0 Pre-Construction Submittals and Meetings.

TS-4.1 Prior to commencement of construction, CONTRACTOR shall attend a Pre-construction Meeting with the OWNER, ENGINEER and state and federal agencies. CONTRACTOR'S designated superintendent shall be present at the pre-construction meeting. A separate meeting will

Technical Specifications Page 4 of 20 be held with the OWNER and ENGINEER to address any outstanding issues with the County.

TS-4.2 REQUIRED SUBMISSION: OPERATIONS PLAN

No less than ten (10) days prior to the Pre-construction Meeting, the CONTRACTOR shall submit an Operations Plan including the following items in completed form for review and acceptance by the ENGINEER and the County, as appropriate:

4.2.1 Letter of Understanding. The CONTRACTOR shall confirm that they have read, understand, and will abide by all terms and conditions of this contract and all of the permits, easements and any applicable ordinances, statutes, laws, rules or regulations which may affect this project and that they shall take responsibility for ensuring that their subcontractors have the same understanding and agree to abide by the same terms and conditions. A copy of the State and Federal Permits and State approved QA/QC plan is provided in Appendix B to these Technical Specifications.

4.2.2 Appointment of the Superintendent(s). Subject to the approval of the ENGINEER and OWNER, the CONTRACTOR shall provide, in writing, the name and qualifications of the appointed superintendent(s) who has/have authority to act for the CONTRACTOR and shall directly supervise all work through to completion of the project. CONTRACTOR shall provide a summary of the number and qualifications of personnel to be used to complete the Work.

4.2.3 List of Subcontractors. The CONTRACTOR shall provide a list of all subcontractors that will or may be used for this work and a list of their qualifications and experience. CONTRACTOR’s surveyor will need to be approved by ENGINEER and OWNER.

4.2.4 Water Quality Monitoring Personnel. The CONTRACTOR shall provide a list of all personnel responsible for collection and analysis of water quality samples and provide their qualifications and experience sufficient to satisfy NTP requirements of the DEP.

A 24-hour/day contact number shall be provided for these personnel. A detailed map identifying the turbidity monitoring protocol shall be provided by the firm conducting the water quality monitoring using the latest forms provided by DEP as part of this submittal for filing with the DEP. This information shall be provided if available prior to the submittal of the Operations Plan to facilitate the processing of the state NTP.

4.2.5 Construction Methodology. This Section shall describe the proposed equipment to be used including the dredge and any tugs, barges or small vessels; the specific construction sequence; and methodology including specification of the number and type of bulldozers and loaders proposed for this work. CONTRACTOR shall provide water transportation for OWNER and ENGINEER for access to construction activities as necessary.

4.2.5.1 Positioning. CONTRACTOR shall provide written details concerning the positioning system to be used on this project. Information to be submitted

Technical Specifications Page 5 of 20 shall include written description of the equipment including applicable manufacturers' specifications and data, and documentation concerning previous jobs on which the equipment was used. Additionally, CONTRACTOR shall provide specific methods to be used in establishing horizontal and vertical control for both the dredging and the beach fill and for staking out the Work. This includes specific methods for accounting for all grade stakes and control markers to ensure their removal prior to completion of the project, including the use of a log and numbering system for all grade stakes so removal of all grade stakes can be documented prior to completion of the project. The log shall contain the location of each grade stake in a format such as x,y coordinates or Station number and range.

4.2.5.2 Turbidity and Positioning Control. Specific methods for monitoring the positioning the dredge in the dredge channel areas and borrow area, for monitoring the dredging depth, for monitoring and controlling turbidity. The CONTRACTOR shall provide the ENGINEER with a certification, attesting to the accuracy of his turbidity testing equipment and procedure no less than ten (10) days prior to the Pre-construction meeting. The CONTRACTOR will follow the calibration guidelines in the state DEP permit. Whenever there is doubt as to the adequacy of the turbidity testing or validity of the results, the ENGINEER may direct that additional tests be performed at no additional cost to the OWNER.

4.2.5.3 Staging and Borrow Area Management. The specific area of staging, mobilization, material and equipment storage, pipeline assembly or fusion, and pipeline route within authorized areas of use shall be clearly described by the CONTRACTOR. This includes specific reference to management of debris and filings of the pipeline that may be generated from the fusion process. The Operations Plan shall specifically identify measures of management of the upland area and any land-based equipment to be used in coordination with the dredging. This Operations Plan will also include procedural details of how the beach fill will be placed and graded to achieve the design grades to ensure the sand disposal is placed within the authorized template.

4.2.5.4 Project Schedule. The CONTRACTOR shall provide an outline of the sequence of Work and project schedule to the ENGINEER and OWNER for acceptance and approval. The project schedule shall also be submitted as part of the Operations Plan. The project schedule shall be based on calendar days and indicate, at a minimum, start of Work, construction period, fill placement completion date, beach tilling, final grading, and completion of all Work. The CONTRACTOR shall propose the order the Work will be performed. The CONTRACTOR shall submit revised progress schedules as appropriate during construction at construction progress meetings.

4.2.5.5 Daily Reporting. Construction may be conducted 24 hours per day, 7 days a

Technical Specifications Page 6 of 20 week. CONTRACTOR shall submit a Daily Report Form to be used for reporting daily operations. This form shall include; dredge progress including the location of the dredge at the beginning and end of the day, average before and after dredging depth, width of dredge cut, and estimated dredged quantity during the reporting period; the location of the discharge end of the pipeline within the beach fill, depending on the project at the beginning and end of the reporting period; a place to record the number of personnel on the job, equipment at the site, materials delivered to the site and materials incorporated in the Work completed during the reporting period, weather and sea conditions, the extent of and reason for any delays, and any instructions received from the ENGINEER, OWNER, Park, or regulatory agency personnel. Daily reports from CONTRACTOR to ENGINEER and OWNER shall also include dredge tracking data (position and depth) and turbidity monitoring data.

4.2.5.6 Quality Control Plan. The CONTRACTOR will designate a Quality

Assurance Officer who will be responsible for implementing all aspects of the Plan. This Plan shall describe the quality control measures that will be specified to achieve compliance with the terms and conditions of this contract and all regulatory permit conditions, including the State approved QA/QC plan.

4.2.5.7 Beach Quality Sand. CONTRACTOR shall indicate measures to be taken at either the suction end or discharge end of dredge pipeline to screen material with openings no larger than 2” x 2” to avoid placement of rock and debris on the beach larger than 2 inches. CONTRACTOR is also responsible to oversee that sand placed on the beach is beach compatible in accordance with the State DEP approved QA/QC Plan.

4.2.5.8 Environmental Protection Plan. The CONTRACTOR will prepare a plan to comply with the requirements specified in this document, including all permit requirements, and will designate a person(s) responsible for implementing this plan, adequately training all personnel who will be implementing elements of the plan, compliance with all permit conditions, terms and conditions of this contract, and adherence to conditions of all of the easements and any applicable ordinances, statutes, laws, rules and permits.

4.2.5.9 Accident Prevention Plan and Appointment of Safety Officer. The

CONTRACTOR shall provide the name and contact information for the Safety Officer(s) responsible for this project, including functional descriptions of duties. The CONTRACTOR shall provide a plan for maintaining pedestrian safety, navigation safety, and pedestrian control in the vicinity of the Work, including both the dredging and beach fill placement.

4.2.5.10 Severe Weather Plan. The CONTRACTOR shall monitor NOAA or other

Technical Specifications Page 7 of 20 weather broadcasts during all dredging operations and notify the ENGINEER and OWNER at the time of any decision to move equipment in preparation for potential storms. Progress surveys are encouraged to be completed prior to any forecasted severe weather event. The CONTRACTOR shall provide a prioritized list of actions to be taken in the event of a severe storm and assign personnel to each action. Safety shall remain a priority at all times and any weather data used in making decisions which will delay Work shall be duly documented on the daily report forms required for each calendar day during the Contract period. The CONTRACTOR shall specify emergency operating procedures to be implemented in the event of mooring equipment failures, loss of a spud, swing wires, anchor wires, or other mooring equipment.

TS-4.3 CONTRACTOR shall designate a competent superintendent who will attend the pre-construction conference as well as be on site during construction activities, and be responsible for seeing the Work is in compliance with the Contract Documents, including the Contract Drawings, Technical Specifications and regulatory permits. This person must remain as the superintendent during the entire duration of the project, unless a written request is made by the CONTRACTOR for a change and is approved by the OWNER. The OWNER can temporarily cease Work if no superintendent, approved by the OWNER, is working on the project, and such delays will not be an acceptable reason to justify contract time extension.

TS-4.4 CONTRACTOR’s superintendent shall attend a weekly progress meeting to be held on site with the OWNER and the ENGINEER to review progress of the Work, work schedule, and submittals. Initially, progress meetings will be held weekly and will be subject to change based on instructions from the OWNER or ENGINEER.

TS-4.5 CONTRACTOR shall provide a cell phone number by which the Superintendent may be reached at any time during construction as well as a backup contact in case the Superintendent is not available.

TS-4.6 CONTRACTOR shall submit the pre-construction survey to OWNER and ENGINEER for the project within 14 days of receipt of NTP from OWNER, at least 14 days prior to construction commencement.

TS-4.7 CONTRACTOR shall submit third party turbidity monitor qualifications, monitoring plan and report form, prior to the Preconstruction meeting with OWNER, ENGINEER and regulatory agencies, for ENGINEER to file with DEP for approval.

TS-5.0 Order of Work.

TS-5.1 The order of Work shall generally be:

The CONTRACTOR shall have an updated survey completed of the dredge and sand disposal areas. The survey shall be conducted by a registered Professional Surveyor and Mapper registered in the State of Florida. The stationing and extent of the surveys shall match the plan included as part of these Technical Specifications. The data shall be

Technical Specifications Page 8 of 20 provided to the ENGINEER for generation of updated construction plans showing beach disposal and beach fill limits, dredging limits, and tolerances. Pre and post construction beach profiles, and profiles for the inlet channels to be dredged, shall extend at least 15 feet beyond the point of profile closure.

Pre and post- construction survey scope is as follows:

o WIGGINS PASS Dredge Stations 12+00 east to -2+00 and C-3 east to C-11 (24 Stations). Including the upland portion of the profile for the stations containing upland in or near the boundaries of the dredge template.

o WIGGINS PASS Dredge Stations C-17 east to C-24 and C-29 south to C-32 (12 Stations).

o WIGGINSS PASS Disposal Monuments R17.5, R18, R18.5, R19, R19.5, R20 and R20.5 (7 Profiles). Offshore to -13.0 NAVD and extending upland to DEP monuments or stationing position control.

o The vegetation line from R17.5 south to R20.5 o Record the type, number, and location (x,y coordinate, NAD83 Florida East Zone) of all daymarks with the potential to be removed, displaced or destroyed during construction. Elevation of the bottom of the sign on the daymark shall be documented so that installation of replacement daymarks or reinstallation of the displaced daymark is reestablished at the same elevation with a 6-inch tolerance.

CONTRACTOR shall coordinate with the OWNER and erect pedestrian fencing for the beach disposal operations, including beach fill placement, staging areas, appropriate USCG markings for navigation safety for channel dredging in WIGGINSS PASS. Once accepted and following preconstruction meetings with the DEP, USACE, OWNER and ENGINEER, CONTRACTOR may begin construction in accordance with all regulatory requirements of the local, state and federal authorizations upon issuance of a NTP from

OWNER.

CONTRACTOR may commence with dredging and beach fill placement upon:

o Acceptance of the pedestrian control and navigation protection by OWNER and

ENGINEER,

o Completion of all necessary pre-construction requirements as confirmed by

ENGINEER, and receipt of the Notice to Proceed (NTP) from the state DEP and from the OWNER.

TS-5.2 Work is permissible 24 hours per day, seven days a week. WORK must comply with all local, state and federal requirements including endangered species protection and lighting requirements.

TS-5.3 Beach disposal will commence at the north end of disposal area and proceed to the south unless an alternate plan is provided and detailed by CONTRACTOR to support an alternative.

TS-5.4 Upon completion and acceptance of the beach fill, CONTRACTOR shall complete necessary tilling and final site grading in the upland beach fill area in accordance with these Technical Specifications and referenced state regulatory permit for acceptance by OWNER and

ENGINEER.

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TS-6.0 Layout of the Work.

TS-6.1 The CONTRACTOR shall use R-monuments and coordinates and the Construction Stations provided on the Contract Drawings to layout the work. It is the CONTRACTOR’s responsibility to layout the work using the horizontal and vertical positioning information shown on the plans. Additional benchmarks may be established based on existing DEP reference monuments, and identified stationing, and CONTRACTOR shall provide ENGINEER with a copy of field notes prepared during the establishment of any additional benchmarks. The CONTRACTOR shall furnish such stakes, equipment, tools, and qualified personnel as may be required in laying out any part of the Work, and for maintaining such staking as necessary for completion of the Work. Upland stakes may be used for station reference of sight lines for the beach disposal, and upland beach fill shall be staked on 100-foot stations. All grade stakes used to establish positioning and beach fill elevations must be accounted for and removed from the beach by the CONTRACTOR prior to final completion. A log of all grade stakes shall be maintained by the CONTRACTOR as described in Section TS 4.2.5.1 throughout the project. Grade stakes shall be made of steel pipe or other material and not wood for safety and sustainability, such that each grade stake can be accounted for and be removed intact after construction. The ENGINEER may request that Work be suspended if grade stake layout is not adequate to permit visual checking of work. Any delays to Work progress as a result of mis-management of the grade stakes shall not be a justified delay relative to Contract timelines and performance. Grade stake colored ribbon markings shall be established at the onset of construction, and the same color scheme shall be maintained throughout the project to allow visual checking of work.

TS-6.2 Since a portion of the dredging may be attached to the upland, grade stakes shall also be used in a similar manner to provide a visual guide and check for the area of dredging and disposal.

TS-7.0 Record Drawings and Daily Reports.

TS-7.1 During the course of construction, the CONTRACTOR shall record all information required to complete a set of as-built Record Drawings. Information to be included on the Record Drawings shall be recorded on one working set of construction drawings during the course of the Work, and shall include actual dimensions and elevations. If field changes are made to modify the Work in any way, such field changes shall be documented on the Record Drawings by dimension, detail and date. The working set of construction drawings shall be kept at the project site and be available for review by OWNER, ENGINEER, and regulatory agencies during the progress of the Work. Prior to Substantial Completion of the Work, the CONTRACTOR shall provide the documented information to the ENGINEER for generation of a final Project Record set of drawings, and such drawings will be signed by CONTRACTOR and OWNER to verify extent and agreement of any changes in the plans. Prior to final payment, the Record Drawings shall be revised by the CONTRACTOR and provided to ENGINEER and OWNER to reflect any changes which have occurred since the submittal for substantial completion.

TS-7.2 During the course of construction, CONTRACTOR shall submit a Daily Report of Operations to include the information listed under TS-4.2. The report shall be submitted on a form to be approved by the ENGINEER and OWNER and shall be submitted electronically by 5:00 pm on the day following the day covered by the report. All surveys conducted by CONTRACTOR for

Technical Specifications Page 10 of 20 verification of pay quantity and regulatory compliance shall be conducted under the supervision and direction of a registered Professional Surveyor and Mapper (PSM) in the State of Florida and the CONTRACTOR shall ensure that the OWNER or ENGINEER may be present during data collection by the surveyor. All copies of final surveys shall be signed and sealed by the registered surveyor, and the final survey shall be accompanied by the surveyor certification satisfying the State DEP reporting requirements.

TS-7.3 All surveys (pre, post, and interim) shall include a signed and sealed survey report, field notes, control information, metadata and submitted in both xyz and DEP formats in compliance with state DEP Monitoring Standards for Beach Erosion Control Projects May 2014 Edited:

October 2014.

TS-8.0 Site Conditions.

TS-8.1 The beach fill construction site is in the nearshore and beach, at the water’s edge of the Gulf of Mexico. The CONTRACTOR shall document conditions of the upland staging areas and areas used for access prior to construction and shall submit site photos and drone photography of those areas in advance of commencement of construction. CONTRACTOR shall take every precaution to avoid damage to the existing facilities and environmental habitat and shall be responsible for restoring facilities and environmental habitat damaged during construction to their preconstruction condition. This includes but is not limited to, daymarks, beach access points, fencing, parking areas, and vegetation.

TS-8.2 The dredge channels are located in or adjacent to Wiggins Pass. These areas of work are adjacent to and within a tidal inlet, and may be subject to strong tidal currents as well as wakes generated by vessels going in and out of the respective inlet. The CONTRACTOR is responsible for being familiar with these conditions and to take them under consideration in the cost of the Work, and to take appropriate precautions to ensure that partially completed work is not subject to displacement or damage due to natural site conditions or boat wakes. Should any such damage or displacement of partially completed Work occur prior to the Work being surveyed and accepted, the CONTRACTOR is responsible for repairing any such damage or displacement of partially completed Work at no additional cost to the OWNER.

TS-8.3 The inlet was first dredged in 1984. Since 1990, the inlet has been dredged on approximately 2-year intervals since 1984. The most recent maintenance dredging events were completed in 2020 and 2022, and the area has been impacted by hurricane evens in 2022, 2023 ands 2024. CONTRACTOR is advised that there may be storm debris encountered when dredging.

Any debris encountered shall be stockpiled and disposed of properly.

TS-8.4 Information and data furnished or referred to herein are for the CONTRACTOR’S information; however, it is expressly understood that the OWNER and ENGINEER shall not be responsible for any interpretation or conclusion drawn there from by the CONTRACTOR. It is the CONTRACTOR'S responsibility, in accordance with the Instructions to Bidders, to visit the project site and to take whatever other measures necessary to be familiar with local conditions and review project mapping and technical data that may in any manner affect the cost and performance of the Work.

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TS-8.5 It is the CONTRACTOR’S responsibility to determine the suitability of the CONTRACTOR’S equipment for working under the site conditions and that the capacity of the CONTRACTOR’S equipment is sufficient for completion of the work within the construction window.

TS-8.6 The CONTRACTOR shall be solely responsible for all informational (manatee) signage markers in the waterways that may be removed, destroyed or otherwise displaced during construction. The informational signage markers shall be restored by the CONTRACTOR at previous location or a location approved by the OWNER. Replaced markers shall be constructed of new material, as approved by the OWNER and in compliance with FFWCC and FWS Guidelines for Posting Uniform Waterway Markers in Florida’s Waterways, March 2008. Pilings shall be wrapped with high density polyethylene pile wrap (.030 thick min.) from 18” above the MHW elevation to 18” below the mudline. Alternative designs by CONTRACTOR may be submittal for value engineering for acceptance by OWNER and ENGINEER. Warranty for marker pilings to be provided pre-construction for approval by OWNER.

https://myfwc.com/media/13268/boat_waterwaymarkerguidelines.pdf

Navigational channel markers may be replaced and new markers installed at the direction of the OWNER. Markers to include one capped fiberglass piling and a sign provided by the OWNER.

Warranty for channel marker installation to be provided pre-construction for approval by OWNER.

TS-9.0 General Notes.

TS-9.1 The Work is to be completed in two areas:

Wiggins Pass is located in Collier County, Sections 17 and 20, Township 48 South, Range 25 East, and in the Gulf of Mexico, Class III Waters. Portions of the project are within Outstanding Florida Waters associated with Delnor-Wiggins Pass State Park and Wiggins Pass Estuarine Area and Cocohatchee River System.

TS-9.2 Upland staging areas for the PROJECT will be designated by the OWNER. Contractor shall be responsible for restoring these areas to their documented pre-project condition, including native vegetation and parking areas, before the project will be considered to be Substantially Complete. If additional storage is required for construction equipment and materials, arrangements for such storage facilities shall be the responsibility of the CONTRACTOR and must be coordinated with the OWNER and the Park.

TS-9.3 Special measures shall be taken to prevent bilge pumpage or effluent, chemicals, fuels, oils, greases, and bituminous materials from entering the water.

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TS-9.4 Disposal of any materials, wastes, effluent, trash, garbage, oil, grease, chemicals, etc., in and adjacent to the project site shall not be permitted. If any waste materials are dumped in unauthorized areas, the CONTRACTOR shall remove the material and restore the area to the original condition as it existed before being disturbed. If necessary, contaminated ground shall be excavated, disposed of as directed by the COUNTY, OWNER, or ENGINEER, and replaced with suitable fill material.

TS-9.5 The CONTRACTOR is responsible for maintaining a safe work environment. The CONTRACTOR is referred to the USACE COE EM 385-1-1 USACE Safety and Health Requirements Manual. Hard hats, long pants, and steel-toed boots are required to be worn on the beach and on the dredge. Life vests are required when working on, in, or near the water.

TS-10.0 Dredging.

TS-10.1 The scope of the dredging includes excavation of all material from the designated areas within the Wiggins Pass main channel and interior channels as shown on the Contract Drawings and discharge of the material in the nearshore and on the beach within the fill template in accordance with the Contract Drawings.

Rock substrate was removed from the WIGGINSS PASS dredge template in 2013, and the pass was dredged again in 2018. Although no rock is anticipated within the dredge template, if rock is encountered the CONTRACTOR is to notify the OWNER and ENGINEER. Refer to Section TS-

4.2.5.7. of these Technical Specifications from material screening.

TS-10.2 The CONTRACTOR shall set a line of marker buoys, U.S. Coast Guard approved, along the seaward boundary of the area of Work as appropriate to conduct necessary dredging within the permitted limits of the dredge channel areas.

TS-10.3 The dredging depths are shown on the Contract Drawings. The Contract Drawings show the design dredge depth includes and overdepth allowance. The design dredge depth is the minimum depth of required dredging, and the overdepth allowance is provided for the CONTRACTOR to ensure the design depth is achieved. The overdepth allowance establishes a not to exceed depth. The volume of any material dredged from below the overdepth elevation will be computed from post dredge surveys and deducted from the pay quantity, unless determined acceptable by the OWNER and ENGINEER prior to the dredging.

TS-10.4 The CONTRACTOR is required to use a submerged pipeline. The pipeline shall rest on the bottom, and CONTRACTOR shall make every effort to locate the pipeline such that the top of the submerged pipeline shall be no higher than -6 feet NAVD when located within or within 25 feet of WIGGINSS PASS Main & South Channel. Should this condition not be achievable due to shoaling, CONTRACTOR shall submit a pipeline location for acceptance by OWNER and

ENGINEER.

TS-10.5 The CONTRACTOR shall clearly mark the entire length of submerged pipeline as necessary to conform to USCG regulations and COUNTY requirements.

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TS-10.6 The dredge cuts are near navigable channels and the CONTRACTOR shall maintain navigability of the channels at all times. Should CONTRACTOR’s pipeline, barges, or other floating equipment temporarily obstruct the channel for passage of boat traffic, CONTRACTOR shall take immediate steps to allow boat traffic to pass.

TS-10.7 The pipeline joints shall be constructed as to preclude spillage and leakage. Regular daily pipeline inspections a minimum of twice a day shall be made during operation and any leaks that develop shall be promptly repaired and the dredge shall be shut down until repairs are completed.

Confirmation of daily pipeline inspections and the location of any leak shall be documented by GPS coordinates in the daily report.

TS-10.8 Should the CONTRACTOR during the progress of the Work, lose, dump, throw overboard, sink, or misplace any material, dredged material, plant, machinery, equipment, or pipe, the CONTRACTOR shall recover and remove same immediately upon instructions from the ENGINEER. The CONTRACTOR shall give immediate notice, with description and location of such obstructions, to the ENGINEER, and when required, shall mark with buoy such misplaced material until same are removed.

In the event of refusal, neglect, or delay in compliance with the above requirements, such misplaced materials may be removed by the COUNTY and the cost of such removal may be deducted from any money due or to become due to the CONTRACTOR or may be recovered under the CONTRACTOR’s bond.

TS-10.9 The CONTRACTOR shall contact the U.S. Coast Guard regarding issuance of a Notice to Mariners, in accordance with U.S. Coast Guard regulations, regarding the dredging and disposal operation immediately after the Notice to Proceed has been received from the OWNER. A copy of the Notice to Mariners shall be provided to the OWNER and ENGINEER.

TS-10.10 Should the CONTRACTOR, during dredging operations, encounter any objects on the Gulf or inlet channel bottom that could be a hazard to navigation, he will notify the OWNER and ENGINEER immediately as to the location of said object and any other pertinent information necessary for the CONTRACTOR to contact the U.S. Coast Guard regarding issuance of a Notice to Mariners.

TS-11.0 Beach Fill Disposal.

TS-11-1 The CONTRACTOR is required to place only beach fill from the area of excavation complying with the criteria established in the State approved Sediment Quality Assurance/Quality Control (QA/QC) Plan approved for this project.

TS-11.2 All fill material shall be compatible with the existing native beach sand and meet the requirements of the DEP and U.S. Corps of Engineers permits. Should clay, clay balls, rock, rubble, or any other debris larger than two (2) inches in diameter or shell hash (visually more than 5%) be encountered during excavation, which exceed the allowance in the State approved QA/QC Plan, the CONTRACTOR will immediately relocate or reduce the excavation depth to avoid placing such material on the beach or nearshore. CONTRACTOR shall document all areas where

Technical Specifications Page 14 of 20 clay, rock, or other non-beach compatible materials is encountered and include the time, date and location and depth of the non-compatible material on the Daily Report Form.

CONTRACTOR shall be responsible for removing any such non-beach compatible material including clay balls, rock or shell hash which is placed on the beach or in the nearshore.

CONTRACTOR shall remove from the site of the Work all snags, driftwood and similar debris lying within the limits of the beach fill section, as directed by OWNER or ENGINEER, before placement of the fill. All materials removed shall be disposed of in an area provided by and at the expense of the CONTRACTOR and approved by the OWNER or ENGINEER. Grading and other construction equipment will not be permitted outside the construction limits except for ingress or egress to and from the site by way of construction access approved by the OWNER. The CONTRACTOR shall grade all areas smooth used by the CONTRACTOR on the beach including those areas used for access to and from the Work area.

TS-11-3 The CONTRACTOR shall continuously visually monitor the sediment being excavated and placed in the nearshore or on the beach. If noncompliant sediment is encountered, the CONTRACTOR will immediately cease dredging, relocate dredging operations into compliant sediment, and verbally notify the OWNER and ENGINEER, providing the time, location, and description of the noncompliant sediment. The CONTRACTOR will also report any encounters with noncompliant sediment in the CONTRACTOR’s Daily Report, providing depth and location in State Plane Coordinates of said materials. The CONTRACTOR will take the appropriate remediation actions as directed by the OWNER or ENGINEER.

TS-11.4 As part of the Project, CONTRACTOR shall plan to utilize appropriate measures as necessary to ensure sand placed on the beach meets the Quality Assurance and Quality Control (QA/QC) Plan for gravel-size in excess of 0.5-inch diameter material does not exceed 5% through use of screen boxes, raking, or other means as determined by the CONTRACTOR. Such means and methods shall be presented to OWNER and ENGINEER for acceptance and employed as necessary for sediment quality compliance with the state permit and approved QA/QC Plan. The collection of non-compatible material exceeding the QA/QC allowance shall be removed and transported to a designated area within the Park. The CONTRACTOR will be required to temporarily dispose of the material in a pile at the designated location within the Park and then removing to a location meeting County, State and Federal requirements.

TS-11.5 CONTRACTOR shall adhere to all requirements of the Quality Assurance and Quality Control Plans. The Quality Assurance and Quality Control Plan for the Project is included in Appendix B and will become part of the contract upon execution. During beach disposal the CONTRACTOR shall collect two pint size sand samples from the beach disposal area at 200-foot stations, save in Ziplock bags, mark with date, location of discharge, and provide to ENGINEER and OWNER at the weekly progress meetings, or daily if requested by ENGINEER. The sampling time and frequency will comply with the State approved QA/QC plan.

TS-11.6 CONTRACTOR shall use all practicable means to minimize turbidity levels during fill placement. This includes the use of shore parallel sand dikes during beach placement of beach fill.

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TS-11.7 The dredge and fill quantities shown on the Contract Drawings are estimated based on available survey data during the design phase of the project. The elevations shown in the Contract Drawings are subject to change and CONTRACTOR shall be responsible for verifying depths as needed for construction activities. A pre-construction survey will be completed by the CONTRACTOR’s surveyor through the dredge channels and beach fill areas. Updated survey information will be provided by CONTRACTOR to OWNER and ENGINEER for updated pre-construction Contract Drawings which will be prepared for acceptance by OWNER, ENGINEER and CONTRACTOR prior to commencement of construction. The survey for the WIGGINSS PASS dredge areas will be conducted first as a priority to allow for ENGINEER to prepare updated construction plans and dredge quantities prior to the Pre-construction meeting with the regulatory agencies.

TS-11.8 Payment for the dredge quantity on this Project will be based on quantities computed from a pre-dredge survey and a post-dredge survey or progress survey as appropriate, and the unit price on the bid schedule, up to the maximum quantity agreed to as part of the Contract between CONTRACTOR and OWNER. Pay quantity verification shall be based on the construction template shown on the Contract Drawings.

TS-11.9 The CONTRACTOR shall grade the upland beach above the waterline to the grades shown on the plans.

TS-11.10 CONTRACTOR shall stake the lines and grades of the beach fill as the work progresses and maintain such stakes and grades as necessary to ensure accurate placement of the fill. All grade stakes shall be accounted for and removed by the CONTRACTOR prior to final acceptance.

TS-11.11 CONTRACTOR shall erect barricades, fences, and signs to prevent public access to the construction area.

TS-11.12 CONTRACTOR shall construct temporary ramps over the shore pipeline lying on the beach at the request of the OWNER or ENGINEER, in order to accommodate pedestrian traffic, if deemed necessary by the Park.

TS-11.13 The upland beach fill shall be tilled to a depth of 24 inches following completion of the beach fill placement in accordance with the limitations provided in the DEP permit.

TS-11.14 CONTRACTOR shall not allow runoff from the dredge discharge to flow landward of the upland beach fill section. The upland beach fill shall be graded to eliminate low spots where ponding could occur. Upon completion of all upland filling operations, the beach fill shall be graded and dressed so as to eliminate any undrained pockets, depressions or high spots on the beach fill and to grade the fill to within a tolerance of plus or minus five-tenths of a foot of the design grade above the waterline. As part of the final dressing of the beach, CONTRACTOR shall grade the seaward slope above mean high water to have a 1 vertical to 10 horizontal slope.

TS-11.15 Construction and grading equipment shall not be permitted outside the staging and construction limits except for ingress or egress to and from the site by way of construction access locations agreed to during the pre-construction conference.

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TS-11.16 CONTRACTOR shall clean up the construction site upon completion of the Work removing all surplus and debris materials, and other equipment, regrade the beach to eliminate any mounds or low spots created during the construction activity.

TS-12.0 Surveys and Payment

TS-12.1 Payment for the Project will be based upon quantities of material removed from the dredge template as shown on the construction plans as documented by the CONTRACTOR’s progress surveys, conducted by a PSM registered in the State of Florida. CONTRACTOR shall make every effort to achieve the dredge depth as shown on the Contract Drawings. Dredging is authorized below that elevation within the overdepth tolerance to facilitate achieving the design grade.

CONTRACTOR shall make every effort to achieve the dredge depth and may dredge within the allowable overdepth. CONTRACTOR shall only be paid for dredging within Wiggins Pass to above the overdepth allowance.

TS-12.2 Notwithstanding required production rates, the CONTRACTOR will need to achieve completion of the Work within the time specified in Contract, and with an understanding that full production may not be achieved at the outset of construction. CONTRACTOR shall be eligible for 60% payment of mobilization upon demonstrating the capability of excavating a minimum of 1,000 cubic yards of sand and placement of that sand in the designated fill area within a 24-hour period. In general, daily production rates are expected to be much higher than 1,000 cubic yards per day. Payment for the remaining 40% of the mobilization/demobilization shall be eligible upon determination of final completion and acceptance of the completed Work including any site restoration by OWNER and PARK.

TS-12.3 Pay quantities will be computed based upon comparison of a pre-construction survey conducted by the CONTRACTOR’s surveyor within at least 30 days prior to construction. The surveyor’s pre-dredge, post dredge, and all progress surveys to be conducted by CONTRACTOR’s surveyor shall be in accordance with paragraph TS-7.2, provided that ENGINEER determines the CONTRACTOR’s surveys are adequate for determining pay quantities and percentage of project completion. If the ENGINEER determines that additional surveys are needed to determine or verify pay quantities, additional surveys may be conducted by the CONTRACTOR with ENGINEER present, or independent surveys may be conducted at the discretion of the OWNER.

Survey profiles deemed unacceptable by the ENGINEER will not be paid. Survey profiles will include the beach fill areas and will be reviewed by the ENGINEER for the following, but not limited to tolerance acceptability, slope, placement location, elevation, survey spacing, and horizontal location of spot elevations.

TS-12.4 The CONTRACTOR shall perform and provide his own volume calculations for determination of material dredged, as required for payment purposes, at the time of each pay request, if applicable. The volumes shall be determined through comparison of surveys.

TS-12.5 Material not deemed beach compatible, excavated and separated from the beach compatible material and stockpiled for disposal off of the beach will be measured by truck size and quantities when removing from the beach. The CONTRACTOR will provide the ENGINEER

Technical Specifications Page 17 of 20 and OWNER with an estimated quantity of the non-beach compatible material based on the truck hauling data and those costs associated with the removal will be the responsibility of the CONTRACTOR and shall not result in any additional expense to the OWNER.

TS-13 Project Completion

TS-13.1 The work will be considered Substantially Complete at the time when the Work (or a specified part thereof) has progressed to the point where, in the opinion of the ENGINEER and OWNER, the Work (or a specified part thereof) is sufficiently complete, in accordance with the Contract Documents, so that the Work (or a specified part thereof) can be utilized for the purposes for which it is intended.

The CONTRACTOR may request a Certificate of Substantial Completion at such time as the above conditions are met. The CONTRACTOR shall submit, with the request, to the OWNER and ENGINEER, a punch list of items that remain to be completed prior to Final Completion for the Project. The OWNER, ENGINEER, and CONTRACTOR shall conduct an inspection of the Project, to determine if the conditions for a Certificate of Substantial Completion have been met, and if so to add any additional items to the punch list as may need to be completed prior to the CONTRACTOR’s request for a Certificate of Final Completion for each project. The OWNER and CONTRACTOR shall agree upon the cost of work required to complete the punch list, and the OWNER shall retain that amount of the contract funds until all items on the punch list are satisfactorily completed.

TS-13.2 Upon request by CONTRACTOR, the OWNER and ENGINEER shall conduct a final project area visit with the CONTRACTOR to determine if the completed Work addresses all of the punch list items developed in Section TS-13.1 at the time of determination of Substantial Completion of Construction and is acceptable.

TS 14.0 Environmental Protection.

TS-14.1 CONTRACTOR shall exercise due caution so as not to damage existing native vegetation along the shoreline within and around the Project site, access ways, and staging areas. Any native vegetation damaged by CONTRACTOR during the course of the Work shall be restored by CONTRACTOR at CONTRACTOR'S expense.

TS-14.2 CONTRACTOR shall be responsible for a third party to monitor turbidity around the dredge and the dredge spoil disposal areas in compliance with regulatory permit conditions as part of the State JCP Permit for the WIGGINSS PASS dredging. CONTRACTOR shall transport ENGINEER or COUNTY to sampling locations to observe sampling procedure upon request.

Should turbidity levels exceed state water quality standards, CONTRACTOR shall take whatever measures necessary and practical, including lateral dikes on the upland beach fill, and suspension of dredging, to control turbidity and bring turbidity levels down to within the state water quality standards.

TS-14.3 The turbidity monitoring data shall be recorded on forms provided by the ENGINEER.

Monitoring reports shall also include the following information for each sample that is taken:

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(1) Time of day and date samples were taken.

(2) Water temperature (oF).

(3) Depth of water body.

(4) Depth of sample.

(5) Antecedent weather conditions.

(6) Tidal stage and direction of flow.

(7) Wind direction and velocity.

(8) GPS location of sample.

(9) Test results and calibration records.

(10) A map, overlaid on an aerial photograph, indicating the sampling locations, dredging and discharge locations, and direction of flow. A sample map shall be reviewed and approved by the Department prior to construction.

(11) A statement by the individual responsible for implementation of the sampling program concerning the authenticity, precision, limits of detection, calibration of the meter, accuracy of the data and precision of the GPS measurements.

TS-14.4 All data in original form shall be forwarded by the CONTRACTOR to the ENGINEER by 5:00 pm the following day with the CONTRACTOR’s daily Quality Control Report. The ENGINEER shall submit weekly summaries of all monitoring reports to:

JCP Compliance Officer Florida DEP Division of Water Resources Management 2600 Blair Stone Road Tallahassee, FL 32399 Phone: 850-245-7591 Jcpcompliance@dep.state.fl.us

TS-14.5 In order to ensure that manatees are not adversely affected by the construction activities as described in these specifications, the CONTRACTOR is required to strictly adhere to the State Department of Environmental Protection and the U.S.