Exhibit_A_-_Technical_Specifications.pdf

City of Holly Hill

Riverside Park Bulkhead Repair

Project Technical Specifications

Original Date: November 4, 2024

Item 1 Mobilization and Demobilization:

The work specified in this section consists of the preparatory work and operations necessary for the movement of personnel, equipment, supplies and incidentals to the project site, and for the establishment of temporary offices, buildings, safety equipment and first aid supplies, sanitary and other facilities, as required by these Technical Specifications, the construction plans, and State and local laws and regulations. All costs for the necessary bonds as indicated in the bid document shall be included in this item.

All costs for permits and any required insurance, and any other pre-construction expense necessary for the start of the work, as well the cost of the removal of the above items, shall also be included in this item. All costs associated with trimming/clearing of trees, other vegetation, turf removal, any other materials, and any other site preparation tasks necessary to allow construction of the project, shall also be included in this item. The contractor is responsible for all work and costs associated with acquiring all necessary documents including but not limited to permits required for dewatering, mangrove trimming, mangrove removal, etc. as necessary for the construction of the proposed structures. All costs associated with collecting complete photographic and video documentation of the site prior to construction shall also be included in this item. All costs associated with grading and grassing the project site once work is complete to restore the site to pre-work conditions shall also be included in the cost of this bid item. The CONTRACTOR shall be responsible for irrigating newly placed grass to ensure establishment and long-term viability of grass cover.

At the pre-construction meeting, the CONTRACTOR shall submit a tentative work schedule, safety plan, a shipping, stockpile and site administration plan (SSSAP), a complete list of all SUBCONTRACTORs that will be employed by the PRIME CONTRACTOR, and complete contact information for PRIME CONTRACTOR staff and all SUBCONTRACTOR staff. Personnel to be included in the contact lists shall include, but not necessarily be limited to: CONTRACTOR and SUBCONTRACTOR Principals, CONTRACTOR and SUBCONTRACTOR Project Managers, CONTRACTOR and SUBCONTRACTOR Site Superintendents and/or Foremen. In addition, emergency contact information shall be included for the PRIME CONTRACTOR and all SUBCONTRACTORs.

The basis of payment for Mobilization and Demobilization shall be LUMP SUM.

Fifty (50) percent of this lump sum cost shall be paid upon mobilization of equipment to the project site. An additional 30% of this cost shall be paid as the project progresses. The final 20% of this cost, less retainage, shall be paid upon removal of all equipment from the project site.

Item 2 Construction Survey and As-Built Survey:

The bid price for this item shall include all necessary survey work for the CONTRACTOR to complete all construction activities and as-built. Elevations for the plans are based on the NAVD 1988 datum.

The CONTRACTOR shall furnish the services of a State of Florida licensed land surveyor for the field layout of all work. The CONTRACTOR’s licensed land surveyor shall perform all initial site layout and shall provide follow-up verification of all work underway at a frequency of no less than once a week. The ENGINEER must approve the initial site stakeout before any work begins; the CONTRACTOR shall provide a minimum of 72-hour notice to the ENGINEER of the anticipated completion of the initial stake-out so the inspection and field verification can be scheduled.

In addition, the bid price for this item shall include all necessary survey work for the CONTRACTOR to prepare one (1) hard copy, one (1) electronic copy (AutoCAD 2021 format) and one (1) electronic copy (pdf format) of the completed project.

These documents shall be signed and sealed by a professional surveyor registered in the State of Florida (the pdf copy shall be digitally signed and sealed) and then submitted to the ENGINEER for approval. The CONTRACTOR shall accurately record the location and elevations of all constructed grades and structures including but not limited to all features, caps, headwalls, box culvert, weir structure, sluice gate, sidewalk, utilities, top and toe elevations of riprap, fence locations, signage, water elevations, ROW lines and easement lines.

The basis of payment for Construction Survey and As-Built Survey shall be

LUMP SUM.

Item 3 Environmental Protection and Compliance:

The bid price for this item shall include, but not be limited to, the necessary manpower, equipment and materials needed to maintain regulatory compliance and environmental protection during all phases of construction. This item includes all costs related to obtaining a NPDES permit and complying with all NPDES permit requirements. Turbidity curtains and silt fencing shall always be installed around construction areas. The CONTRACTOR shall take all proactive measures to reduce loss of sediment and turbidity generation in receiving waters during all construction activities. The bid price for this item shall include all costs for monitoring and reporting turbidity of water discharged from the site as required by the NPDES or other permits, as well as all costs for corrective measures taken to correct measured turbidity levels more than permitted conditions.

The bid price for this item shall also include all costs associated with regularly inspecting and maintaining all other erosion, sediment, and turbidity control measures employed during construction of this project, as well as any necessary repairs and/or replacement of these measures, with the need determined through regular inspections conducted at minimum intervals as specified in the NPDES and other project permits, and/or at the direction of the ENGINEER and/or CITY. Copies of the control measure inspection reports shall be submitted to the ENGINEER within one week of the inspection, and a summary of corrective measures taken to address noted deficiencies shall be included. A weekly log of these inspections shall be provided to the ENGINEER.

In addition, the CONTRACTOR shall comply with all permits for this project and all federal, state, and local water quality standards throughout the duration of the project. The CONTRACTOR shall always keep copies of permit documents on site while the project is under construction.

The CONTRACTOR shall comply with the standard manatee, sea turtle and small tooth sawfish protection conditions; these are included in the Environmental Notes of the construction plans.

The basis of payment for Environmental Protection and Compliance shall be LUMP SUM. Fifty (50) percent of the lump sum cost shall be paid upon obtaining an NPDES permit and properly installing all erosion and turbidity control measures. The remainder of the cost (less retainage) shall be paid as the project progresses.

Removal of all control measures from the project site once the work has been completed is required before final acceptance of the project by the CITY.

Item 4 Temporary Traffic Control:

manpower, equipment and materials needed to provide temporary traffic control through the project area for the duration of construction. The site entrance of Riverside Park on Riverside Dr., and it is anticipated that trucks hauling materials to or from the project site will be frequently entering and leaving the project area through this entrance.

At the preconstruction meeting, the CONTRACTOR shall submit a temporary traffic control plan (TTC) to the ENGINEER and the CITY for approval. This TTC Plan shall conform to the requirements of Standard Plans Indexes 102-600, 102-602 and 102- 605 of the Florida Department of Transportation Standard Plans (FY 2019-20). The TTC Plan shall also include details ensuring the safe delivery and removal of materials by trucks from temporary stockpile areas established near the project area.

Any personnel utilized as flaggers must have completed a Temporary Traffic Control Flagger Training course offered by an FDOT-approved provider, and set-up, inspection and maintenance of temporary traffic control devices must be performed under the supervision of personnel who have completed an Intermediate level TTC course offered by an FDOT-approved provider. The CONTRACTOR shall always maintain copies of all training certificates on the project site. The ENGINEER must be informed once TTC measures have been fully implemented so an inspection may be scheduled. The CONTRACTOR shall regularly inspect barricades, signs, fencing and other TTC devices employed on the job site, and shall repair or replace these as needed.

The basis of payment for Temporary Traffic Control shall be LUMP SUM. Fifty (50) percent of the lump sum cost shall be paid once TTC devices and signage have been deployed per the approved TTC plan. The remainder of the cost (less retainage) shall be paid as the project progresses. Removal of TTC devices and signage from the project site once the work has been completed is required before final acceptance of the project by the CITY.

Item 5 Demolition, Hauling, and Disposal:

The bid price for this item shall include, but not be limited to, the required manpower, equipment, materials and other costs involved in removal and disposal of the existing all existing structures and features as indicated in the construction plans.

The CONTRACTOR shall take all necessary precautions to avoid damage to upland and wetland vegetation and trees to be preserved during removal, demolition and hauling of debris.

Trees requiring removal during construction shall be replaced in kind.

In addition, the CONTRACTOR shall take all necessary precautions to avoid impacts to in-water resources during demolition and removal of the existing structures. All environmental protection measures shall be in place before any demolition or other construction activity commences.

The CONTRACTOR shall be responsible for requesting utility locates from Sunshine 811 prior to commencing any demolition or other earthwork activities. All silt fence, turbidity curtains and other erosion and sediment control measures must be in place prior to commencing any demolition activities.

The basis of payment for Demolition, Hauling, and Disposal shall be LUMP SUM.

Item 6 Reinforced Concrete Cap (Includes Concrete Plugs):

manpower, equipment and materials needed to properly construct and install the concrete cap, and other incidental related construction as indicated in the construction plans.

The CONTRACTOR is responsible for submitting shop drawings for steel, concrete mixes, joint sealant and other hardware/materials for ENGINEER’s approval before any cap. Concrete trucks shall not be allowed within 25 feet of the bulkhead. The CONTRACTOR shall ensure that the proper mix design for the cap concrete, as indicated in the construction plans, is submitted to the ENGINEER for approval prior to pouring any concrete. The CONTRACTOR shall also submit shop drawings and technical data sheets for all reinforcing steel products to the ENGINEER for selection and approval prior to construction.

The CONTRACTOR shall inform the ENGINEER a minimum of 72 hours in advance of pouring concrete for the cap so an inspection can be scheduled to check the placement of reinforcing steel inside the forms. The CONTRACTOR shall ensure sufficient chairs, non-metallic ties and other measures are utilized to ensure reinforcing steel is not allowed to shift position excessively when pouring concrete for the cap. The CONTRACTOR shall place concrete in a manner that minimizes movement of reinforcing steel during the pour and shall ensure that concrete is thoroughly vibrated while being poured. Excessively honeycombed sections of concrete cap will be rejected, and the CONTRACTOR shall replace these at no additional cost to the CITY. The CONTRACTOR shall notify the ENGINEER once the forms for the cap are removed after cap concrete has been poured so an inspection of the finished cap can be conducted.

All costs associated with material testing of each truck of concrete will be the responsibility of the CONTRACTOR and such cost shall be included in this line item.

See notes and specifications in the construction plans for more information on alignment and rebar configuration.

The CONTRACTOR shall take all precautions necessary to prevent excessive loads from being applied to the bulkhead wall by earth-moving equipment and methods and shall carefully note all structures and other items that are indicated to be moved, stored, and/or preserved, and not explicitly indicated to be demolished, are protected throughout construction. Any such item that is damaged or destroyed by construction activity shall be repaired and/or replaced by the CONTRACTOR at no additional cost to the CITY.

This item shall also include all required testing for cap concrete. All testing shall be performed by a licensed Florida engineering firm.

The basis of payment for Reinforced Concrete Cap (Includes Concrete Plugs) shall be per CUBIC YARD.

Item 7 CMI UC-95 Composite Sheet Pile:

manpower, equipment and materials needed to furnish and install the Composite Sheet Pile (CMI UC-95 or equivalent) bulkhead wall as indicated in the construction plans.

The CONTRACTOR is responsible for providing a pile driving methodology that will properly attain the indicated embedment of the sheet piles, and that meets the sheet pile manufacturer’s construction requirements and instructions and must submit calculations verifying the methods and procedures for such installation. Sheet piles must be embedded with the appropriate machinery and the CONTRACTOR is responsible for replacement, at no additional cost to the CITY, of any broken, cracked or misaligned sheet piles. A copy of the geotechnical report prepared for this project is included in the contract documents; the CONTRACTOR is responsible for being familiar with this report when preparing the pile driving methodology.

The CONTRACTOR shall inspect all sheet piles that are delivered to the site and shall stockpile sheet piles in a manner that ensures sheets are undamaged. It is the CONTRACTOR’s responsibility to reject any sheet pile that is delivered to the site damaged to an extent where it is in unusable condition. Any damaged sheets that are driven shall be repaired or replaced at the direction of the ENGINEER, at no additional cost to the CITY.

The CONTRACTOR is responsible for maintaining the up-to-date pile driving logs at all times during the construction. In addition to the weekly submittal requirements for driving logs noted in the General Conditions above, the CONTRACTOR shall make the driving logs available for inspection by the ENGINEER and/or CITY at any time requested. The information to be recorded in a pile driving log; a pile driving log sample must be provided to the engineer of record for review and approval prior to installing sheet pile. The CONTRACTOR shall submit the final pile driving logs so the ENGINEER may review them prior to final project acceptance. The ENGINEER shall not make a structural certification without this submittal.

Sheet piles shall be cut to design top elevation. Piles damaged beyond the top six

(6) inches shall be removed and replaced, unless approved by the ENGINEER in writing. The ENGINEER shall be notified about damaged piles a minimum of 72 hours in advance to a planned site visit. Unless approved in writing by the Engineer, the damaged piles shall be removed and replaced at the CONTRACTOR’s expense.

The basis of payment for UC-95 Composite Sheet Pile shall be per LINEAR FOOT.

Item 8 Helical Anchor System:

manpower, equipment and materials needed to furnish and install the helical anchor system as indicated in the construction plans.

The basis of payment for the Helical Anchor System shall be per EACH anchor installed.

Item 9 Flowable Fill:

manpower, equipment and materials needed to furnish and install the flowable fill as indicated in the construction plans.

APPLICABLE PUBLICATIONS:

ASTM C403/C403M, Standard Test Method for Time of Setting of Concrete Mixtures by Penetration Resistance, latest edition.

ASTM C939/C939M, Standard Test Method for Flow of Grout for Preplaced- Aggregate Concrete (Flow Cone Method), latest edition.

Density of the Flowable fill shall not exceed 80pcf, and the 28-day strength of the flowable fill shall be not less than 500 psi

INSPECTION AND COORDINATION: The CONTRACTOR shall provide access to the WORK as requested for inspection. The CONTRACTOR shall provide a minimum 48-hour advance notice of its intention to begin new WORK activities.

WARRANTY:

The MANUFACTURER shall warrant the EQUIPMENT, MATERIALS, and PRODUCTS specified in this SPECIFICATION against defective materials and workmanship with the MANUFACTURER’s standard warranty, but for no less than one (1) year from the date of completion.

PRODUCTS

MATERIALS:

The CONTRACTOR shall furnish materials conforming with the requirements specified in Division III of the F.D.O.T. Standard Specifications for Road and Bridge Construction, latest edition, and as indicated herein. Specific references are as follows:

Fine Aggregate (Sand) ………………………………………………….. Section 902 Portland Cement (Types II ) …………………………………….....Section 921 Water ………………………………………………………………………Section 923 Admixtures………………………………………………………………….Section 924 Fly Ash, Slag and other Pozzolanic Materials ………………………... Section 929 Concrete mix shall include pore blocker specified on the drawings.

MIX PROPORTIONS:

The CONTRACTOR shall be responsible for producing a flowable mixture using the following guidelines and as directed by the ENGINEER.

Excavatable flowable fill shall be proportioned to yield a material with a density (unit weight) between 70 and 80 pounds per cubic foot (pcf).

Excavatable flowable fill shall be proportioned to yield a material with a 28-day compressive strength between approximately 100-300 psi.

The requirements for unit weight and compressive strength are intended for laboratory mix design purposes only and are not intended for project site acceptance criteria.

General concrete mix proportions shall be determined during the mix design stage.

Components of the concrete mix:

Portland Cement (Type II) Pozzolans Fine Aggregate (Fine Sand) Water Pore blocker Superplasticizer Concrete strength on the 28th day shall be 4000 psi with a +10% variation.

Water / Cement ratio, W/C shall be between 0.35 and 0.37

EXECUTION

PRODUCTION AND PLACING:

Flowable fill shall be produced and delivered using concrete construction equipment. Flowable fill shall be placed by chute, pumping or other methods approved by the ENGINEER. Tremie flowable fill through water.

Place flowable fill without vibration or other means of compaction.

Do not place flowable fill during periods of inclement weather, i.e., excessive precipitation or ambient temperatures below 40 degrees Fahrenheit.

CONSTRUCTION REQUIREMENTS:

The CONTRACTOR shall take all necessary precautions to prevent any damage caused by the hydraulic pressure of the fill during placement prior to hardening. The Contractor shall provide necessary means and methods to confine the material within the designated space.

ACCEPTANCE:

The flowable shall be proportioned and placed as specified herein. In general, the strength desired is the maximum hardness that can be excavated using conventional excavating equipment. No curing protection is required.

The fill shall be left undisturbed until material obtains strength of 35 psi penetration resistance measured by a hand-held penetrometer in accordance with ASTM C403/C403M. The penetrometer shall be provided by the CONTRACTOR.

Furnish delivery ticket to the ENGINEER for each load of flowable fill delivered to the project site. Ensure that each ticket contains the following information:

Project designation, Date, Time, Class and quantity of flowable fill, Actual batch proportions.

The basis of payment for Flowable Fill shall be per CUBIC YARD of the fill delivered to the site, based on truck ticket and agreed volumes. The tracked quantities of unsuitable material hauled offsite and imported structural fill shall be compared, and payment will be made for ticket quantity of imported fill if the quantities are within reasonable agreement. The construction inspector must be present on the job site to verify truck tickets of the flowable fill material. All unsuitable materials shall be removed from the job site.

Item 10 Rock Revetment:

manpower, equipment and materials needed to furnish and install rock revetment as indicated on the construction plans.

The CONTRACTOR shall provide clean, durable limestone or granite rubble meeting the requirements of Bank and Shore Riprap as detailed in Section 530 of the Florida Department of Transportation Standard Specifications for Road and Bridge Construction (Latest Edition). The CONTRACTOR will submit shop drawings, gradation and density/specific gravity analyses for Rip Rap stone. Material placed without this approval shall be removed and replaced by the CONTRACTOR at no additional cost to the CITY.

Limestone rock shall be non-elongated (maximum 2:1 ratio of greatest dimension to smallest dimension for any individual piece of rock; no flat rocks will be accepted), with a minimum specific gravity of 2.4 (150 pounds per cubic foot). Granite rock shall be non-elongated (maximum 2:1 ratio of greatest dimension to smallest dimension for any individual piece of rock; no flat rocks will be accepted), with a minimum specific gravity of 2.6 (162 pounds per cubic foot). Rock shall be sound, hard and durable, free of open or incipient cracks, soft seams, or other structural defects, and shall consist of rough, angular broken stone. Under no circumstances will concrete rubble be accepted. Rock shall be washed prior to delivery to the project site and shall be free of sand, dirt and debris; a maximum of 5% fines by weight shall be permitted. All precautions must be taken to keep the rock clean upon delivery to the project area.

At the pre-construction conference, the CONTRACTOR shall submit a letter designating all sources for the rock to be provided for the project. Each source must provide certified testing data, dated within the last two (2) years, for the rock, indicating its adherence to the requirements listed below. This testing data must be submitted to the ENGINEER for approval prior to ordering or taking delivery of any rock.

If for any reason the CONTRACTOR elects to acquire rock from another source a 15-business day notice and data shall be provided to the ENGINEER for approval prior to the CONTRACTOR ordering or taking delivery of any rock. The quarry identified as the new rock source shall submit the same testing data as that required from the original source(s).

Acceptance of a source for rock does not constitute “blanket” acceptance of all rock material originating from that source. The CITY and the ENGINEER reserve the right to require testing of any batch of rock delivered to the site to determine if the rock meets project specifications. Such testing, if requested, will be carried out by an FDOT-certified material testing laboratory. Any products or materials manufactured, purchased or installed prior to shop drawing approval will need to be replaced at the CONTRACTOR’s expense if the corresponding materials are not approved by the

ENGINEER.

The basis of payment for Rock Revetment is per TON. Payment will be made based on the quantity of rock delivered and installed, and the CONTRACTOR shall be required to submit certified scale weight tickets for payment of installed revetment under this item. Copies of all tickets must be always maintained on the project site and be available for inspection by the ENGINEER and CITY at any time, upon request. Payment for materials stored on site shall not be made without the prior approval of the CITY, and such payment shall be made only for the invoiced value of the materials stored; no mark-ups or builders’ fees will be paid for stored materials.

Item 11 Removing and Replacing Existing Brick Pavers:

The existing brick paver shall be removed, cleaned and properly stored on site for reinstallation.

The bid price for this item shall include, but not be limited to the necessary manpower, equipment, materials and any other provision needed to properly construct the paver as indicated in the construction plans. The CONTRACTOR shall properly form and furnish the base, subbase, and or subgrade as well as install brick pavers as indicated in the construction plans.

The CONTRACTOR shall coordinate, submit, shop drawings and technical data sheets to the ENGINEER for approval prior to installing any materials or components. Any items installed prior to ENGINEER approval shall be replaced by the CONTRACTOR at no additional cost to the CITY.

Coarse sand with Coefficient of Uniformity, Cu , not less than 6 or Select Structural fill shall be used for soil replacement where it was indicated on the drawings

The basis of payment for Removing and Replacing Existing Brick Pavers shall be per SQUARE FOOT.

Item 12 Concrete Ribbon Curb:

The work specified in this section shall include, but not be limited to, the required manpower, equipment, materials and other costs associated with construction of environmental curb as per the plans.

The CONTRACTOR shall furnish concrete that is meeting the requirements listed below. The mix design shall be submitted to the ENGINEER for approval prior to ordering or placing any concrete. Any curbing constructed without this approval shall be rejected, and the CONTRACTOR shall remove and replace it at no additional cost to the CITY.

Ribbon Curb Concrete Mix Specifications

Compressive Strength (28-day Min.) 3000 PSI

Water to Cement Ratio <= 0.40

Ribbon curb shall be reinforced with (1) 9 Ga wire at top and bottom

CONTRACTOR shall provide light broom finish to curb surface. CONTRACTOR shall saw cut joints, as indicated in the construction plans. Subbase material shall be compacted to 95% Modified Proctor value per AASHTO T-180.The CONTRACTOR shall submit all compressive strength and compaction testing reports to the ENGINEER for approval.

The basis of payment for Ribbon Curb shall be per LINEAR FOOT.

Item 13 Railing:

The bid price for this item is included but not limited to the removal and relocation of the existing railing. CONTRACTOR is responsible for ensuring that the railing is removed and stored on site as shown in the construction plans. CONTRACTOR shall ensure no damage to the existing railing occurs during the removing process.

The bid price for this item also includes the installation of additional railing as shown in the construction plans. CONTRACTOR shall also furnish and install railing that matches the existing railing. CONTRACTOR shall submit shop drawings to engineer of record for approval of matching railing prior to ordering and installing railing.

The basis of payment for Railing shall be per LINEAR FOOT.

END OF DOCUMENT