9-EXHIBIT G - Special Provisions.pdf

Stormwater Maintenance & Repair Services 1 Special Provisions

EXHIBIT G

RFP 2025-30

Stormwater Maintenance & Repair Services

PROJECT SPECIAL PROVISIONS

SCOPE OF WORK

Work performed under this Contract will consist of construction, maintenance and repair of stormwater infrastructure within the limits of the Town of Hilton Head Island, South Carolina.

Individual projects will vary in size, location, value, and duration. Each project will be issued using a project specific Job Order. Payment will be made on the basis of the actual quantities and unit items satisfactorily completed in accordance with the Contract requirements.

The majority of work that will be completed under this Contract will be smaller maintenance and repair work for stormwater infrastructure, which may typically involve sinkhole repair, shallow (< 6’ deep) and smaller storm pipe installation/replacement (< 36” diameter), installation/replacement/repair of drainage inlets, drainage ditch excavation, asphalt/concrete patching, etc. Work that may be completed under this Contract includes larger construction projects and may typically involve larger storm pipe installation/replacement (≥ 36” diameter), maintenance/repair/replacement of deeper storm drain systems (≥ 6’ deep), lagoon dam repair, and may require the use of temporary shoring walls, trench boxes, diving services for temporary pipe plugs, well-point systems, etc.

The Contractor shall have sufficient resources (e.g. personnel, equipment, etc.) and availability to work on multiple construction projects simultaneously for the life of the Contract.

The Contractor may be asked to respond to and/or assist with emergency requests. If the Town is unable to secure the area, the Town would expect the Contractor at a minimum to secure the impacted area/public hazard temporarily (i.e. temporary signage, barriers, road plates, lane closures, etc.) at its earliest convenience until such time the Job Order could be issued for a Contractor to perform the construction work. The Town may need emergency assistance after natural disasters, such as emergency sinkhole repairs, pumping, road flooding, etc. The Town would expect the Contractor at a minimum to have a crew and equipment available for emergency assistance after the incident has passed and it is possible to enter the Island with Town-issued incident re-entry passes.

The Town anticipates grouping smaller planned projects together to minimize mobilization for the Contractor, as well as, allowing the Contractor longer performance periods to complete these grouped projects.

The Town may divide larger projects into smaller scopes of work, if it is determined to be advantageous to the Town to do so (e.g. the Town issues a Job Order to one Contractor for major underground stormwater repairs, but issues a separate second Job Order to a different Contractor, or utilizes proper procurement methods, for the paving portion of the project). This is intended to

Stormwater Maintenance & Repair Services 2 Special Provisions alleviate any Subcontractor coordination issues or delays for the primary Job Order. The Contractor(s) must have the ability to perform, or subcontract, all work associated with the line items listed in the Unit Cost Schedule.

The primary Contractor must perform a majority of the work under this Contract; Subcontractors may not perform more than 50% of the total annual work contracted dollar amount.

GENERAL REQUIREMENTS

The Contractor shall furnish all labor, materials, supplies, equipment, fuel and other appurtenances necessary to provide stormwater construction, maintenance and repair as described in the Scope of Work and specific Job Orders. The Contractor is responsible for removal and appropriate legal disposal of all associated debris and waste materials.

NOTIFICATION

The Contractor shall notify the Owner at least 48 hours prior to starting work. If proper notification is not given to the Owner, the Contractor may be required to demobilize and remobilize at the Contractor’s expense.

The presence or absence of the Project Manager shall not relieve the Contractor of his responsibility to properly execute the work in accordance with these specifications and the Plans of each Job Order. The Project Manager may order any element of the work uncovered as specified in the General Conditions.

The Project Manager shall notify the Contractor of any observed non-compliance with the Plans and specifications and/or applicable Federal, State or local laws and regulations, promptly upon discovery. The Contractor shall, after receipt of such notice, immediately take corrective action.

Such notice, when delivered to the Contractor or his authorized representative, shall be deemed sufficient. If the Contractor fails or refuses to comply promptly, the Project Manager may issue an order stopping all or part of the work until satisfactory corrective action has been taken.

PERFORMANCE REQUIREMENTS

All work will be completed in a professional workmanlike manner in accordance with the requirements and provisions specified herein. The Contractor shall work closely with the Town of Hilton Head Stormwater Division to assure quality control.

The Contractor shall employ workers who are competent, qualified and properly trained to perform the required work. Employees of the Contractor shall not be considered employees of the Town of Hilton Head Island.

Use adequate numbers of skilled workers who are thoroughly trained and experienced in the necessary crafts and who are completely familiar with the specified requirements and methods needed for proper performance of the work.

Use equipment adequate in size, capacity, and numbers to accomplish the work in a timely manner.

Stormwater Maintenance & Repair Services 3 Special Provisions

The Contractor shall be responsible for coordinating, scheduling and supervising all work activities to assure compliance with all requirements specified herein. All work is subject to inspection by the Town for compliance with these specifications. All incomplete or improperly performed work shall be rectified immediately. Any repeated failure to correct noted deficiencies may result in cancellation of this Contract.

Contractor shall be responsible for taking photographs of all pertinent construction activities, such as, existing site conditions, pipe installation, pipe bedding, joint connections, joints being wrapped, sealed pipe connections at all structures on the interior and exterior of the structures, final grade work and stabilization, final pavement, utility damage by Contractor, utility bore damage through stormwater infrastructure, and existing conditions of stormwater infrastructure before repair (e.g.

corroded/deteriorated pipe, poor grout connections). All photographs shall be labeled by date/direction/location/Job Order and submitted with invoicing in a format approved by the Town.

Contractor shall be responsible for preventing downstream contamination from project site. This includes, but is not limited to, sedimentation and pollutants entering storm drain systems, channels or lagoons/ponds from construction activities. Contractor shall ensure new stormwater infrastructure installed is free from sedimentation. Any existing or new drainage systems that collect sediment from project construction activities, shall be cleaned at the Contractor’s expense to the satisfaction of the Town. All work completed shall leave the site stabilized to prevent erosion and sedimentation.

Monitor quality control over suppliers, manufacturers, products, services, site conditions, and workmanship, to produce work of specified quality.

PROJECT

A Project shall be defined as the construction to be performed at a specific work location via a specific Job Order.

PROJECT PERIOD

The Project Period shall be defined as the number of calendar days and/or Stop and Start Dates established by the Project Manager in consultation with the Contractor to complete a Project as identified in the specific Job Order.

PROJECT NOTICE TO PROCEED

The Project Notice to Proceed shall be defined as a written notice to proceed (i.e. Job Order) to work on a project at a specific location with a specific scope of work. Issuance of the Project Notice to Proceed (i.e. Job Order) will begin the Project Period.

PROJECT LIQUIDATED DAMAGES

Liquidated damages will be Job Order specific and may be assessed for each day required to complete the work past the Substantial Completion deadline. Work by the Contractor or his

Stormwater Maintenance & Repair Services 4 Special Provisions

Subcontractor will not be permitted on Saturdays, Sundays or Holidays after the specified completion date.

YEARLY UNIT PRICES ADJUSTMENT:

Unit prices may be adjusted annually through the period of the Contract and any Contract renewals.

The Unit Price Adjustment Date shall be defined as the one-year anniversary date of the original Contract Notice to Proceed. Ninety (90) days prior to the Unit Price Adjustment Date, the Contractor must request in writing any proposed adjustments to the Contract unit prices in effect, for consideration by the Town. Any requests to adjust Contract unit prices must be properly justified by the Contractor. Any adjustments to unit prices will be based on the Engineering News Record, Construction Cost Index, unless otherwise approved by the Project Manager. Any adjustments to unit prices must be approved in writing by the Town.

If there is an unforeseen change in operational or material costs to the Contractor due to the economy or forces beyond their control, and where the Contractor does not believe they can continue to operate at the Contractual Unit Prices for the one year period without acquiring a monetary loss, the Town may consider adjustments to the Contract Unit Prices prior to the end of the Contract year. The Contractor must submit a request in writing any proposed adjustments to the Contract Unit Prices in effect, with sufficient justification and documentation, for consideration by the Town. Any adjustments to unit prices must be approved in writing by the Town and agreed to by both the Town and the Contractor.

NON-CONTRACTUAL UNIT ITEMS AND PRICES:

The Town understands that the Unit Cost Schedule is not all-inclusive of labor, material, and other resources necessary for the completion of the services performed under this Contract, and that additional services may occasionally be necessary. Any such additional services will be negotiated as needed for each particular Job Order, and the negotiated rate will remain in effect for the duration of the Job Order. Rates/charges for additional services may be changed from one Job Order to another, but are subject to the Town’s review and approval. The Town reserves the right to solicit cost information for such additional services from other Contractors, and may award the work to another Contractor at its convenience. Any additional services that are performed without the Town’s prior written authorization will not be reimbursable. The Contract shall be amended to include new items as deemed necessary by the Town.

All subcontracted work for items not listed in the Unit Cost Schedule shall be paid for by the Town at the Subcontractor’s Cost of Work plus a fee, according to the General Conditions (Exhibit B). Any proposed subcontracted work must be submitted to the Town via an estimate provided by the Subcontractor prior to the subcontracted work being approved in writing by the Town. The Subcontractor costs in the estimate must be inclusive of all direct and indirect costs associated with completing the work, including, but not limited to, mobilization, equipment, labor, and fuel costs.

Stormwater Maintenance & Repair Services 5 Special Provisions

CREW

A construction crew shall be defined as the assemblage of a supervisor, equipment operators, laborers, workers, and equipment that are assigned to each specific project location. A bilingual person must always be present on the job site.

EQUIPMENT

The Contractor is responsible to purchase and otherwise provide all equipment, materials, and labor required to complete the work specified herein.

All tools and equipment shall be appropriate for the task performed and shall be maintained in a safe and good working condition. If the equipment is not in proper working condition, work shall be suspended until the deficiencies are addressed. Any fluid leaks creating contamination from the equipment must be contained and removed by the Contractor immediately.

ORDER OF WORK

The Town will request work from a Contractor by means of a “Job Request” and will establish a project scope of work, site and priority. The project scope of work will be a general description of the desired work, provided with the goal of assisting the Contractor with the allocation of labor, equipment, and materials. Generally, the project site will consist of a single location; however, the project site may consist of multiple locations, whenever necessary to reduce the number of mobilizations for multiple project locations within close proximity of each other. When several projects are grouped together, the Town anticipates allowing the Contractor longer performance periods to complete the work. Job Requests can be submitted to multiple Contractors for a competitive process, or can be issued to only one Contractor, at the discretion of the Town.

Once a Job Request is received, the Contractor will submit a written “Work Plan” with a brief description of the work, an itemized quote, an estimate of the project’s completion date, a brief description of the necessary mobilization and justification for additional costs (if greater than the minimum 5%), a brief description of the proposed traffic control measures (justification must be provided for the traffic control costs), and any sketches, photographs, maps, records or additional information to explain the order and methodology by which the Contractor plans on completing the work.

The Town will review the Work Plan, and will approve, reject, or amend it as quickly as possible.

The Town reserves the right to utilize the entirety or any portion of the Contractor’s Work Plan, and the Town may add, omit, or modify items and quantities at its discretion. If the Work Plan is amended or is approved as submitted, the Town will issue a Job Order, which will serve as the Contractor’s Notice to Proceed for the project. If a Work Plan is rejected, the Town will generally allow the Contractor to revise and resubmit its Work Plan. However, the Town reserves the right to solicit a Work Plan and/or cost estimate from another Contractor, and may award the project, or portions of the project, to another Contractor, at its convenience.

Stormwater Maintenance & Repair Services 6 Special Provisions

The Contractor shall not begin work at the project site until a Job Order, in conjunction with the approved Work Plan, are issued by the Owner. Furthermore, the Contractor is advised to delay its preparatory activities (e.g. purchase of materials, mobilization) until after it receives a Job Order.

The Town shall not be held liable for any costs or damages associated with the Contractor’s premature actions.

The Contractor shall keep a copy of the executed Job Order on the job site at all times, including any attached site maps or supporting materials. Unit costs can be removed for the crew, but the detailed scope of work, descriptions, and details must be available to the crew at all times.

REPORTS, RECORDS, AND DATA

The Contractor shall submit to the Town such reports, records and other data as may be requested concerning work performed or to be performed under this Contract.

OPERATION OF EQUIPMENT

At all times, the Contractor shall operate their equipment in a safe manner as not to create a hazard to personnel, citizens, or private or public property.

All equipment, machinery and materials will be operated within the established rights-of-way, easements, or within specific areas delineated by a Right of Entry, held or acquired by the Town of Hilton Head Island or PUD.

The equipment shall not be left overnight or at other times when work has been suspended, unless approved by the Town.

TRANSPORT OF MATERIALS

All materials must be properly and legally transported in a manner as not to cause pollution, damage, or material loss. The method of transporting construction materials to and from the work areas shall be by truck or other means acceptable to the Owner. The Contractor's truck traffic route(s) is (are) subject to the approval of the Owner.

The Contractor shall submit in writing to the Owner for review and approval all intended disposal sites and haul routes to be used for all material removed under this Contract, prior to removal at each work area location.

Contractor will provide watertight conveyance for any liquid, semi liquid, or saturated solids which tend to bleed during transport. No liquid loss from transported materials will be permitted.

ADDITIONAL SERVICES

No additional work or deviation from the original Job Order shall be allowed without written approval from the Project Manager. When the scope of additional services warrants, a written proposal shall be submitted by the Contractor for review and written acceptance by the Town.

Stormwater Maintenance & Repair Services 7 Special Provisions

Additional services shall only be performed on a “time and materials” basis when conditions so warrant.

Work requested by a private property owner that is not part of the approved sketch drawings/specifications must be separately contracted between the property owner and the Contractor. Any additional work agreed upon and completed by the Contractor for the property owner shall not begin until all Town work has been completed and accepted. The Contractor shall not suggest or recommend additional work to the property owners during the performance of the work contracted with the Town. Separate work for a property owner completed by the Contractor that is not part of the approved Job Order will not be paid for by the Town.

SP-1, JOB ORDER MOBILIZATION:

1.0 Description:

Work covered by this special provision consists of preparatory work and operations which must be performed, mobilizing equipment and personnel to the job site, or for costs incurred prior to beginning work on a Job Order. This shall also include the Designated Representative’s time required to prepare Job Order estimates and quotes. The mobilization will be defined according to SCDOT Specification Section 103.10 Mobilization. Mobilization for Subcontractors will be paid for according to Exhibit B – General Conditions.

2.0 Payment:

Payment for the item Job Order Mobilization will be at a lump sum unit rate, with a minimum mobilization fee of $1,000 or 10% of the Final Job Order Subtotal Cost, whichever is larger. The mobilization costs are negotiable up to 15% of the Final Job Order Subtotal Cost, but must have sufficient justification, documentation and proof provided by the Contractor prior to Job Order issuance that additional mobilization costs are necessary beyond the 10% minimum. Equipment requiring specialized permits for mobilization would be considered justification for increased mobilization costs. Office distance from the job site, or housing personnel locally, is not sufficient justification for increased mobilization costs.

If the Contractor is forced to demobilize and then remobilize due to a Change Order, the Change Order shall include a mobilization fee based on the aforementioned thresholds. The Town will not pay for any additional mobilization charges if the Contractor is demobilized and has to remobilize due to their own deficiencies. There is no additional mobilization costs for multiple mobilization fees; the subtotal costs exclude any mobilization fees.

If the Town requests an emergency response from the Contractor (e.g. to respond to a site for pre-storm preparatory work or post-storm disaster response), the Contractor will be compensated with an additional lump sum emergency mobilization cost that will be negotiated and agreed to by both the Contractor and the Town, before the work is authorized. The emergency mobilization payment will be in addition to the cost of the work performed and the regular Job Order Mobilization costs.

Stormwater Maintenance & Repair Services 8 Special Provisions

Payment will be made under:

SP-1 JOB ORDER MOBILIZATION ...................................................................................... LS

Final Job Order Subtotal Cost Mobilization ($1,000 or 10% min. negotiable up to 15%) .......... LS

SP-2, CASTINGS:

Provide iron castings for frames, grates, covers, etc., conforming to the requirements of AASHTO M 105, Class 35B, and the alternate load test conforming to the requirements of AASHTO M 306. Produce castings in closed molds and boldly filleted at angles. Ensure that the arises are sharp and perfect and make certain that they are true to pattern in form and dimensions, free from pouring defects, sponginess, cracks, blowholes, and other defects affecting their strength and value for the service intended. Ensure that the castings are clean and neatly finished.

Make certain gratings and covers fit firmly into their respective frames.

Steel grates and frame may be used instead of cast iron as long as the loading and hydraulic requirements are met and they conform to the following:

A. Hot dip zinc coat steel grates and frame in accordance with AASHTO M 111.

B. Dimension steel grates and frame to be interchangeable with each piece of the cast iron grate and frame shown on the Plans.

C. Provide steel grates and frames of sufficient strength to meet or exceed the loading requirements of Federal Specification RR-F-621 (latest edition).

Ensure that the manufacturer has a testing program to verify that the castings comply with the strength requirements of AASHTO M 105. Make certain test bars are Type B and are made and tested in accordance with the requirements of AASHTO M 105.

This specification is for material, delivery, and labor required for installation of items into existing frames. Any other incidental work shall be covered under “STRUCTURES” on the bid item list. “STRUCTURES” items shall include castings.

2.0 Measurement:

Measurement shall be each, per item installed.

3.0 Payment:

Payment will include the cost of all operations involving the installation of each item.

Stormwater Maintenance & Repair Services 9 Special Provisions

SP-2 CASTINGS…………………………………………………………………………….EA

SP-3, TREE PROTECTION FENCE:

Work covered by this special provision consists of furnishing, erecting, and removing tree protection fence at locations shown on the plans and as directed by the Project Manager.

2.0 Materials:

Materials shall be as specified by the Town of Hilton Head Island Natural Resources Department, generally orange plastic mesh, at least 48 inches high, measured from grade, mounted on steel or wooden posts.

3.0 Construction Methods:

The tree protection fence shall be constructed in accordance with Town of Hilton Head Island Tree Natural Resources Department. Tree protection fence shall be maintained in its originally installed condition throughout the project duration. Payment will not be made for any tree protection fence which is not properly maintained. Once the project is complete and has been accepted, the Contractor must remove all tree protection fencing installed.

4.0 Measurement:

The quantity of tree protection fence to be paid for will be the actual number of linear feet of tree protection fence, measured along the fence, which has been erected and accepted.

5.0 Payment:

The quantity of tree protection fence, measured as provided above, will be paid for at the Contract unit price line item per Linear Foot for "Tree Protection Fence". Such payment will be full compensation for all work covered by this special provision, including but not limited to, furnishing and erecting fence material, posts, and all incidentals. The unit price shall include all direct and indirect costs such as labor, equipment, fuel, transportation, disposal, and all other related costs necessary to successfully complete the task. Payment will not be made for any tree protection fence which is not properly maintained.

SP-3 TREE PROTECTION FENCE ............................................................................................ LF

Stormwater Maintenance & Repair Services 10 Special Provisions

SP-4, SELECTIVE TREE REMOVAL:

Work covered by this special provision includes the trimming, removal, and disposal of trees as directed by the Town and in accordance with the provisions of these specifications.

This item includes all elements of work and equipment required to complete the project, including but not limited to, climbing, tying-off, cutting and lowering large limbs, grinding brush and cutting stumps, and disposal/removing from the site as directed by the Town.

2.0 Methods:

A. Trees:

Tree and limb removal shall be accomplished by current industry standard methods. All stumps shall be cut flush to the existing natural ground surface as much as possible, but no greater than 6 inches above, unless otherwise directed by the Town.

B. Disposal:

All trees and limbs removed shall be disposed of in accordance with the applicable requirements of the Standard Specifications and the Town of Hilton Head Island Land Management Ordinance.

3.0 Damage to Remaining Vegetation:

The Contractor shall conduct operations in such a manner to prevent damage to vegetation that is to remain growing and to prevent damage to adjacent property.

If any such damage to vegetation occurs, broken branches shall be removed and rough edges shall be shaped and made smooth in accordance with the "Landscape Construction Standards". Any tree trunks that are damaged or scarred shall be sealed with tree wound/ pruning sealant as needed by the Contractor at no additional cost to the Town. Any vegetation that is damaged to such an extent as to destroy their value for landscape purposes shall be removed, disposed of, and shall be replaced by the Contractor at no additional cost to the Town. Any grass or ground cover that is damaged shall be seeded and strawed by the Contractor at no additional cost to the Town.

4.0 Measurement:

Trees will be categorized as follows: 6”-12” diameter; 13”-24” diameter; 25”-36” diameter; and multi-stemmed trees such as Wax Myrtles (or equivalent) with accumulation of stems greater than 12” equivalent diameter. Limbs that are included in this special provision are defined as greater than 6 inches in diameter.

Stormwater Maintenance & Repair Services 11 Special Provisions

The measurement for quantity of selective tree removal and limb removal will be the actual number of trees which have been removed and disposed of. The diameter of the tree will be determined by measuring the circumference of the tree forty-two (42) inches above the above average ground level. The diameter of the limb will be determined by measuring the circumference of the limb at the connection to the tree trunk.

5.0 Payment:

Selective Tree Removal – The quantity of selective removal, measured as provided above will be paid for at the Unit Line Item price per Each for "Selective Tree Removal, _____ inch to _____ inch diameter”, up to 36 inches in diameter. Such payment will be full compensation for all work covered by this special provision.

The following limb and tree removal will be negotiated based on time and materials, lump sum costs, or subcontractor plus fee estimates from specialty tree removal services provided by Contractor:

i. Removal of trees with diameters greater than 36 inches;

ii. Limbs greater than 6 inches in diameter; and

iii. If the Town deems that the removal of a tree poses a hazard to property, the general public, or man-made features such as buildings, utilities, hardscapes, or roadways, thereby requiring removal using specialized equipment and/or methods.

The unit line item price shall include all direct and indirect costs such as labor, equipment, tools, materials, fuel, transportation, disposal of waste materials, and all other related costs necessary to successfully complete the task.

Payment will be made under:

SP-4 SELECTIVE TREE REMOVAL, 6 INCH TO 12 INCH DIAMETER ............................. EA SP-4 SELECTIVE TREE REMOVAL, 13 INCH TO 24 INCH DIAMETER ........................... EA SP-4 SELECTIVE TREE REMOVAL, 25 INCH TO 36 INCH DIAMETER ........................... EA

SP-4 SELECTIVE TREE REMOVAL, MULTI-STEM TREE GREATER

THAN 12 INCH EQUIVALENT DIAMETER ……. ……………..……………………………EA

SP-5, VEGETATION / SELECTIVE UNDERGROWTH REMOVAL AND DISPOSAL

This section covers the work necessary for the removal and disposal of all materials classified as vegetation and select undergrowth. This item may include any of the following actions as directed by the Town for each work area: cutting, clearing, trimming, and removal and disposal of vegetation and undergrowth.

Stormwater Maintenance & Repair Services 12 Special Provisions

2.0 Definitions:

For the purpose of this Contract, vegetation is defined as live herbaceous, woody, single-stemmed, multi-stemmed, or overhanging plants growing or present within the work areas designated by the Town. All vegetation taller than 6 inches and less than 6 inches in diameter shall be classified as undergrowth to include, but not limited to, grass, bamboo, small trees, shrubs, limbs, groundcovers, aquatic plants, and vines.

3.0 Methods:

A. It is expected that portions of work areas will not be accessible to standard power-driven equipment and will have to be accessed with hand-held equipment. These work areas include, but are not limited to, saturated sites, waterways. heavily vegetated sites, foot trails, stormwater best management practices (BMPs), sites immediately adjacent to structures, and along fence lines.

B. Project sites or work areas may include one or more of the following defined conditions:

i. Workshelf and Accessway work areas (generally largely flat enough and wide enough to manage using standard power-driven equipment such as a bush hog;

these areas are generally 8 feet or greater in width).

ii. Work areas with workshelf/established access (generally will have an 8 foot or greater work shelf) on at least one side of the channel, allowing the use of standard power-driven equipment such as a bush-hog, skid steer with grinder attachment, or similar machinery.

iii. Work areas with limited access (cannot be accessed with standard power-driven equipment) along the channel or stormwater infrastructure, requiring manual vegetation removal (must use hand-held equipment and access by foot).

iv. Work areas requiring specialized access, utilizing equipment such as boats or rafts, or the need for waders to perform manual vegetation removal (must use hand-held equipment), particularly along the far bank of ponds and wide channels where access can only be gained from one side.

C. The Contractor will only remove vegetation from the areas designated by the executed Job

Order per the specifications in this Contract.

D. All stumps from removed vegetation shall be cut flush to the existing natural ground surface as much as possible, but no greater than 6 inches above, unless otherwise directed by the Town.

E. All undergrowth shall be removed from the work area, except those plants which are designated by the Town to be preserved. Stumps and roots of removed undergrowth shall remain intact at a height of no greater than six (6) inches above existing natural ground surface.

Stormwater Maintenance & Repair Services 13 Special Provisions

F. When the scope of trimming vegetation extends over a watercourse, the vegetation shall be trimmed to allow a canopy to remain intact at an angle of 45 degrees from the top of bank upward toward the center of the watercourse flow line. Any material trimmed/chopped must be collected, removed from the site, and disposed of properly.

G. All undergrowth removed shall be disposed of in accordance with the applicable requirements of the Standard Specifications and the Town of Hilton Head Island Land Management Ordinance. All debris from vegetation removal process shall be removed from the site and cannot be left within the channel/ditch or on the slopes

4.0 Damage to Remaining Vegetation:

The Contractor shall conduct his operations in such a manner to prevent injury to vegetation that is to remain growing and also to prevent damage to adjacent property.

If any such injuries to vegetation occur, broken branches shall be removed and rough edges of scarred edges shall be shaped and made smooth in accordance with the "Landscape Construction Standards". Any tree trunks that are damaged shall be sealed with tree wound/ pruning sealant as needed by the Contractor at no additional cost to the Town. Any vegetation that is damaged to such an extent as to destroy their value for landscape purposes shall be removed, disposed of, and shall be replaced by the Contractor at no additional cost to the Town. Any grass or ground cover that is damaged shall be seeded and mulched by the Contractor at no additional cost to the Town.

5.0 Measurement:

The quantity of vegetation / selective undergrowth removal will be the actual number of Square Yards or Linear Foot of vegetation / undergrowth removed, measured along the surface of the ground, which has been completed and accepted by the Town.

6.0 Payment:

Payment for vegetation / selective undergrowth removal and disposal will be made at the unit line item quantity as follows: per Acre for workshelf and accessway work areas where vegetation management can be accomplished using standard power-driven equipment (e.g. bush hog); per Square Yard for work areas with and without workshelf access; per Linear Foot for work areas requiring specialized access as stated in the Unit Cost Schedule for each respective bid item.

Payment will be made on the basis of the actual quantities satisfactorily completed in accordance with the Contract requirements. Such payment will be full compensation for all work covered by this special provision, including the vegetation removal process, equipment, tools, and labor utilized, collection, removal and disposal of undergrowth, cutting of stumps, and repairing any damage to vegetation to remain.

No special payment will be made for the inability of standard equipment to access the work area, the absence of an adequate trail or road to reach the work site, the absence of a stable driving

Stormwater Maintenance & Repair Services 14 Special Provisions surface, or the difficulty of operating equipment near bridges or other drainage structures.

The unit line item price shall include all direct and indirect costs such as labor, equipment, materials, fuel, transportation, disposal of waste materials, and all other related costs necessary to successfully complete the task.

Payment will be made under:

SP-5 VEGETATION / SELECTIVE UNDERGROWTH REMOVAL AND DISPOSAL

FOR WORKSHELF OR ACCESSWAY (POWER-DRIVEN EQUIPMENT) ........... ...AC

SP-5 VEGETATION / SELECTIVE UNDERGROWTH REMOVAL AND DISPOSAL

WORK AREAS WITH WORKSHELF/ESTABLISHED ACCESS (POWER-

DRIVEN EQUIPMENT) .............................................................................................. ...SY

SP-5 VEGETATION / SELECTIVE UNDERGROWTH REMOVAL AND DISPOSAL

WORK AREAS WITH LIMITED ACCESS (HAND-HELD EQUIPMENT/ACCESS BY

FOOT) …………………………………………………………………………………...SY

SP-5 VEGETATION / SELECTIVE UNDERGROWTH REMOVAL AND DISPOSAL

WORK AREAS REQUIRING SPECIALIZED ACCESS ............................................ ...LF

SP-6, TRASH / DEBRIS REMOVAL & DISPOSAL

This section covers the work necessary for the removal and disposal for all materials classified as trash, urban/organic debris, special waste, or solid waste. This item consists of pick-up and disposal of all litter, trash, and debris within the limits of the channel and workshelf, drainage easement, or road Right-of-Way, and such other areas as identified by the Town, or as required by field conditions during the execution of other work.

2.0 Definitions:

For the purpose of this Contract, trash and debris is defined as any collection of material that are prone to collect together and impede water flow in the channel or jurisdictional watercourses and that can be removed manually or with minimal hand or power tools and equipment. Trash and debris shall be categorized as Normal or Large as described below.

3.0 Methods:

A. Normal trash and debris includes, but is not limited to, the following: urban debris (e.g.

tires, shopping carts, barrels, concentrations of domestic trash, balls, bicycles, floatables, cans, bottles, etc.) and organic debris (e.g. limbs, branches, litter, accumulated pine straw, unrooted vegetation, or mixtures of organic debris and trash).

B. Large trash and debris includes items such as downed trees, large appliances, or abandoned equipment/vehicles that may require heavy machinery for removal. If, during the progress of the work, the Contractor discovers trash or debris within this category not specified in

Stormwater Maintenance & Repair Services 15 Special Provisions the Job Order scope of work, the Contractor shall notify the Town’s designated Project Manager immediately and await written authorization via an executed Change Order before removing any material.

C. Trash and debris that is caught up on trees and shrubs, riprap, pedestrian bridges, and other structures will be removed under this Unit Cost Line item.

D. Debris that is located within the normal limits of any storm drainage outfall or waterway tributary will be removed under this Unit Cost Line item.

E. Material removed from the channel must not be stockpiled within 10-feet of the edge of the roadway. All debris stockpiled for purposes of drying out must be removed and hauled off within 48 hours of stockpiling. Care must be taken not to track or drip mud onto any adjacent street. Any mud, dirt, debris, or other material that is deposited onto the roadway during the execution of this Contract must be thoroughly removed from the road surface by 5:00 p.m. of each work day.

H. The Contractor will only remove debris from the areas designated by the executed Job Order per the specifications in this Contract.

F. Dry wood debris may be mulched and loaded into trucks for disposal.

4.0 Measurement:

The quantity of normal trash and debris removed and disposed will be the actual number of cubic yards of trash and debris removed and disposed of as measured by load/haul tickets from the disposal facility (if applicable) or measured by Contractor garbage bag quantity that is properly documented and agreed upon beforehand by both the Town and Contractor.

Large trash and debris items will either be calculated by the actual weight of debris and trash collected, removed and disposed of per the weight tickets measured in tonnage (TON) from a legal disposal facility, or the volume of the debris removed in cubic yards (CY) based on dumpster roll off volumes or dump truck volumes, or negotiated based on time and materials needed to remove the material and actual disposal costs associated; which can include time and materials for removing material, machinery and labor for mulching onsite, utilizing roll off containers and providing quantity and volumes, providing actual tonnage of debris and trash removed and disposed of per the weight tickets from the disposal facility, or based on disposal costs from disposal facility.

5.0 Payment:

Payment for normal trash and debris removal and disposal will be made at the unit price per cubic yard as specified on the Job Order. The cost of large trash and debris items will either be paid at the unit price per ton in weight, or by cubic yard in volume, or be negotiated per Job Order based on time and materials needed to remove the material and actual disposal costs associated; which can include time and materials for removing material, machinery and labor for mulching onsite, Stormwater Maintenance & Repair Services 16 Special Provisions utilizing roll off containers and providing quantity and volumes, providing actual tonnage of debris and trash removed and disposed of per the weight tickets from the disposal facility, or based on disposal costs from disposal facility. Payment will be made on the basis of the actual quantities satisfactorily completed and properly documented in accordance with the Contract requirements.

The unit line item price shall include all direct and indirect costs such as labor, equipment, materials, fuel, transportation, disposal of waste materials, and all other related costs necessary to successfully complete the task.

Payment will be made under:

SP-6 TRASH / DEBRIS REMOVAL & DISPOSAL NORMAL .................................. CY SP-6 TRASH / DEBRIS REMOVAL & DISPOSAL LARGE ...................................... CY SP-6 TRASH / DEBRIS REMOVAL & DISPOSAL LARGE ............................................... TON SP-6 TRASH / DEBRIS REMOVAL & DISPOSAL LARGE ............................................... NEG

SP-7, LABOR RATES:

All necessary labor shall be included in the unit costs of each line item, however it may be necessary for additional services and thus the following rates shall apply.

Additional laborer(s), upon approval by the Town, may be required to complete the tasks described in future Job Orders. This Contract is based on the assumption that additional laborer(s) will not typically be needed.

FOREMAN & PICKUP:

1.0 Description:

Foreman & Pickup shall be defined as those employees of the Contractor whose normal work duties include the supervision of daily operations of laborers, equipment operators and equipment and are paid by the Contractor at the rate of Foreman.

2.0 Measurement:

Measurement of Foreman & Pickup will be the actual number of hours worked on the project. This measurement shall include the use of a pickup truck provided by the Contractor. No separate measurement will be made for fuel, oil or maintenance for pickup.

3.0 Payment:

Foreman and Pickup will be paid for at the hourly rate bid. Foreman and Pickup rates shall include all overhead, profit, and benefits.

Stormwater Maintenance & Repair Services 17 Special Provisions

TRUCK DRIVER:

Truck Driver shall be defined as those employees of the Contractor whose normal work duties include the operation of medium and heavy duty trucks and are paid by the Contractor at the rate of Truck Driver.

2.0 Measurement:

Measurement of Truck Driver will be the actual number of hours worked on the project.

3.0 Payment:

Truck Driver will be paid for at the hourly rate bid. Truck Driver rates shall include all overhead, profit, and benefits.

HEAVY EQUIPMENT OPERATOR:

1.0 Description:

Heavy Equipment Operator shall be defined as those employees of the Contractor whose normal work duties include the operation of medium and heavy construction equipment and are paid by the Contractor at the rate of operator.

2.0 Measurement:

Measurement of Operator will be the actual number of hours worked on the project.

3.0 Payment:

Operator will be paid for at the hourly rate bid. Operator rates shall include all overhead, profit, and benefits.

LABORER:

1.0 Description:

Laborer shall be defined as those employees of the Contractor whose normal work duties include manual labor and operation of hand equipment, and are paid by the Contractor at the rate of laborer.

2.0 Measurement:

Measurement of labor will be the actual number of hours worked on the project.

Stormwater Maintenance & Repair Services 18 Special Provisions

3.0 Payment:

Payment for Labor Rates, measured as provided above, will be made at the Contract unit price per hour for the various items listed under this special provision. These prices and payments will be full compensation for all elements of work including hand labor, light equipment, fuel, lubricants, cutting edges, repairs, and operating costs, overhead and profit and benefits.

FLAGGER:

1.0 Description:

Flagger shall be in accordance Section XVI-A of the W.A.T.C.H. handbook.

2.0 Materials:

Materials shall be in accordance with Section XVI- B&C of the W.A.T.C.H. handbook.

3.0 Construction Methods:

Construction Methods shall be in accordance with Section XVI-D&E of the W.A.T.C.H.

handbook.

4.0 Measurement:

The quantity of Flaggers to be paid for will be the actual number of hours Flagger is used on a project.

5.0 Payment:

Flaggers will be paid for at the hourly rate bid. Flagger rates shall include all overhead, profit, and benefits.

Payment will be made under:

SP-7

FOREMAN AND PICKUP TRUCK .......................................................................................... HR TRUCK DRIVER ........................................................................................................................ HR HEAVY EQUIPMENT OPERATOR ......................................................................................... HR LABORER ................................................................................................................................... HR FLAGGER ................................................................................................................................... HR

SP-8, EQUIPMENT:

Stormwater Maintenance & Repair Services 19 Special Provisions

Equipment shall be defined as those types listed under EQUIPMENT in the itemized proposal or other equipment utilized on the project as approved by the Project Manager. All equipment shall utilize rubber tracks to the maximum extent practical.

1.0 Measurement:

Measurement of equipment will be the actual number of hours worked on the project.

3.0 Equipment:

LARGE EXCAVATOR (55,001-70,000 lbs Operating Weight, JD 345, or Comparable) MID-SIZE EXCAVATOR (18,001-55,000 lbs Operating Weight, JD 210, or Comparable) MINI EXCAVATOR (Up to 18,000 lbs Operating Weight, JD 75, or Comparable) BACKHOE / LOADER (CAT 426, or Comparable) RUBBER TIRE LOADER (CAT 930, or Comparable) SKID STEER LOADER (Operating Capacity up to 3500 LBS, or Comparable) DUMP TRUCK (10-15 CY Capacity) DUMP TRAILER (Capacity up to 9 CY)

GRADALL WITH 2.0 CY DITCH BUCKET

4.0 Payment:

Equipment will be paid for at the hourly rate bid. Equipment rates shall include the cost of fuel, lubricants, cutting edges, all repairs, and all other operating costs other than the operator's wages.

Hourly rates for equipment held in ready as directed by the Project Manager shall be 50 percent of the rate paid for equipment in use. If equipment requires special permitting to mobilize due to size and weight restrictions, contractor shall be compensated with increased mobilization costs, agreed to by both the Town and Contractor, per SP-1.

Payment will be made under:

SP-8

LARGE EXCAVATOR (55,001-70,000 lbs Operating Weight, JD 345, or Comparable)……. HR MID-SIZE EXCAVATOR (18,001-55,000 lbs Operating Weight, JD 210, or Comparable)…. HR MINI EXCAVATOR (Up to 18,000 lbs Operating Weight, JD 75, or Comparable)……….…. HR BACK HOE / LOADER (CAT 426, or Comparable) ................................................................. HR RUBBER TIRE LOADER (CAT 930, or Comparable) ............................................................. HR SKID STEER LOADER (Operating Capacity up to 3500 LBS, or Comparable)... .................... HR DUMP TRUCK (10-15 CY Capacity) ........................................................................................ HR DUMP TRAILER (Capacity up to 9 CY) ................................................................................... HR

GRADALL WITH 2.0 CY DITCH BUCKET………………………………………………….HR

SP-9, ROAD PLATES:

Stormwater Maintenance & Repair Services 20 Special Provisions

To accommodate excavation work, steel plate bridging may be necessary. All conditions for use of steel plate bridging shall be set forth in the following provisions:

Consideration of steel plate bridging shall take into account the following factors: traffic volume and composition, duration and size of the proposed excavation, and weather conditions. When backfilling operations of an excavation of a roadway, whether traverse or longitudinal cannot be properly completed within a work day, steel plate bridging with a non-skid surface and shoring may be required to preserve unobstructed traffic flow. In such cases, the following conditions shall apply:

a) Steel plates used for bridging must extend a minimum of 12” beyond the edges of the trench.

b) Steel plate bridging shall be installed to operate with minimum noise.

c) The trench shall be adequately shored to support the bridging and traffic loads.

d) Temporary paving with cold asphalt concrete shall be used to feather the edges of the plates, if plate installation by Method (2) described below, is used.

e) Steel plate bridging shall be secured against displacement by using adjustable cleats, shims, or other devices.

Steel plate bridging and shoring shall be installed as directed by the Owner using either Method

(1) or (2):

Method 1 (for speeds greater than 45 mph): The pavement shall be cut and cold planed to a depth equal to the thickness of the plate and to a width and length equal to the dimensions of the plate.

Method 2 (for speeds less than 45 mph): Approach plate(s) and ending plate (if placed longitudinally) shall be attached to the roadway by a minimum of (2) dowels pre-drilled into the corners of the plate and drilled 2 inches into the pavement. Subsequent plates are butted to each other. Fine graded asphalt concrete shall be compacted to form ramps with a maximum slope of 8.5%, with a minimum 12” taper to cover all edges of the steel plates. When the steel plates are removed, the dowel holes in the pavement shall be backfilled with either fine graded asphalt concrete mix, concrete slurry, or equivalent grout approved by the Owner.

The Contractor is responsible for maintenance of the steel plates, shoring, asphalt concrete ramps, and ensuring that they meet minimum specifications. The minimal thickness of the steel plate shall be one inch, based on the use of A-36 grade steel spanning a trench no greater than 5 feet. The steel plates shall have a nominal coefficient of friction of 0.35 skid resistance.