2026-CB-019-Corridor-Ashaway_JS_Pages.pdf

JS-i

INDEX

SPECIFICATIONS - JOB SPECIFIC

CODE TITLE PAGE

104.17 Construction Noise and Vibration Pollution Controls JS-1

106.01 Certification of Materials JS-5

106.01.1 Buy America Job Specification (BABA) JS-6

108.03 Prosecution and Progress – Schedule Level JS-9

108.10 Prosecution and Progress JS-10

109.07 Partial Payment of Lump Sum Items JS-11

201.9901 Remove and Stockpile Bridge Closure Traffic Devices JS-12

202.9901 Contaminated Soil JS-13

202.9902 Stockpile and Place Riverbed Material JS-14

703.9901 Cascade Separator CS-5 (STU-A3) JS-15

703.9902 Infiltration Trench (STU-M1) JS-17

703.9903 Lined Sand Filter Trench (STU-P1) JS-17

703.9904 Lined Sand Filter Trench (STU-A1) JS-17

703.9905 Infiltration Trench (STU-A2) JS-17

703.9906 Permeable Grass Paver for Erosion Protection JS-20

712.9901 Installation of Temporary Gas Main – Bridge No. 005201 JS-23

712.9902 Installation of Temporary Gas Main – Bridge No. 005101 JS-23

712.9903 Installation of Temporary Gas Main – Bridge No. 005001 JS-23

712.9904 Installation of New Gas Main – Bridge No. 005201 JS-23

712.9905 Installation of New Gas Main – Bridge No. 005101 JS-23

712.9906 Installation of New Gas Main – Bridge No. 005001 JS-23

800.9901 Ashaway River Bridge No. 050 JS-24

800.9902 Potter Hill Culvert No. 051 JS-26

800.9903 Potter Hill Bridge No. 052 JS-28

JS-ii

CODE TITLE PAGE

800.9904 Prefabricated Bridge Units JS-30

800.9905 Steel Press-Brake-Formed Tub Girder (PBFTG) JS-36

805.9901 Temporary Earth Retaining System JS-38

805.9902 Temporary Utility Support System JS-40

808.9901 Ultra High-Performance Concrete (UHPC) JS-42

808.9902 Precast Concrete Substructure Elements JS-57

808.9903 Precast Concrete Culvert JS-61

808.9904 Cast-in-Place Structure Concrete Masonry JS-65

920.0330 Riprap R-6. R-7. R-8 Standard 8.3.0 JS-66

938.1000 Price Adjustments JS-67

L06.9901 Live Stakes JS-68

L06.9902 Rhodo – Rosebay 2-2.5 Feet JS-70

L06.9903 Maple – Red 2-2.5 Inch Caliper JS-70

Job Specific

RIC №: 2026-CB-019

JS-1

CODE 104.17

CONSTRUCTION NOISE AND VIBRATION POLLUTION CONTROLS

DESCRIPTION:

The Contractor shall implement comprehensive measures to minimize noise and vibration pollution caused by construction activities. These activities include, but are not limited to, drilling, pile-driving, demolition, excavation, hauling, and the operation of heavy machinery. All noise and vibration mitigation measures shall comply with applicable local, state, and federal regulations and shall be subject to the ongoing approval of the State.

CONSTRUCTION METHODS:

1. Noise Control Plan Submittal and Approval

1.1 Plan Development

The Contractor shall develop a Noise Control Plan prior to the commencement of construction. The plan shall include, but not be limited to, the following elements:

a. The Contractor shall conduct pre-construction noise assessments to establish baseline noise levels and identify potential impacts on surrounding communities.

b. Identification of Noise Sources: A detailed description of all construction activities likely to generate noise (e.g., pile-driving, drilling, excavation, equipment operation).

c. Noise Mitigation Measures: Specific methods and technologies to be used for noise reduction, such as noise barriers, acoustic enclosures, low-noise equipment, and scheduling practices.

d. Monitoring and Reporting: Procedures for monitoring noise levels, the type(s) of monitoring equipment, the location of monitoring equipment, frequency of measurements, and reporting protocols.

e. High-Noise Protocols: Contingency measures for activities that may exceed permissible noise levels, including immediate corrective actions and communication with affected stakeholders.

f. Community Engagement: Strategies for notifying and addressing concerns from nearby residents and stakeholders.

1.2 Plan Submittal

The Contractor shall submit the Noise Control Plan to the State for review and approval no later than 30 days prior to the start of construction. The submittal shall include:

a. A detailed narrative describing the proposed noise control measures.

b. Drawings or diagrams showing the location of noise barriers, monitoring points, and sensitive receptors.

c. Technical specifications for noise control materials and equipment.

d. A schedule for implementing noise control measures.

1.3 Review and Approval

The State shall review the Noise Control Plan within 14 calendar days of receipt. If the plan is approved, the Contractor shall implement the plan as submitted. If the plan requires revisions, the State shall provide written comments, and the Contractor shall resubmit the revised plan within 7 calendar days.

1.4 Plan Implementation

Upon approval, the Contractor shall implement the Noise Control Plan in its entirety. Any modifications to the approved plan shall be submitted to the State for review and approval prior to implementation.

2. Noise Control Measures

JS-2

2.1 Noise Limits

The maximum allowable noise levels shall be as follows:

Daytime Limit (7:00 AM – 7:00 PM): 90 dBA (A-weighted) at the nearest residence or occupied building.

Nighttime Limit (7:00 PM – 7:00 AM): 75 dBA (A-weighted) at the nearest residence or occupied building. Nightwork shall be approved by RIDOT.

If noise levels exceed the applicable limits, the Contractor shall immediately halt the violating activity and implement corrective measures before resuming operations.

Impulse vs. Continuous Noise

Impulse Noise (e.g., pile driving) shall not exceed 90 dBA at the nearest residence during daytime hours.

Continuous Noise (e.g., excavation, generators) shall not exceed 85 dBA during daytime and 70 dBA during nighttime hours, following best practices for noise mitigation.

The Contractor shall schedule high-impact noise activities, such as pile driving, during daytime hours, unless otherwise approved.

2.2 Noise Mitigation Strategies

The Contractor shall employ noise-reducing technologies and practices, including:

a. Installation of noise barriers or curtains around construction zones.

b. Use of low-noise equipment and machinery.

c. Implementation of acoustic enclosures for high-noise operations.

d. Scheduling high-noise activities during daytime hours, avoiding early mornings, evenings, and weekends, unless otherwise approved.

e. For any proposed pile-driving operations, the Contractor shall:

Utilize auger drilling or other mitigation measures for the first 25 feet to minimize noise.

Deploy noise curtains or other sound-dampening systems as required.

Use variable high-frequency hammers (minimum 2000 RPM) to reduce noise and vibration.

2.3 Monitoring and Compliance

The Contractor shall install and maintain real-time vibration and noise monitoring systems at the nearest residence or occupied building to the construction activity that is generating vibration and noise and adjacent to sensitive utilities (i.e., gas mains) within 200’ of the construction work. These locations may change based upon the location of construction activities and more than one location may have monitoring systems based on the number of construction activities generating noise. Noise recording equipment shall have the capability for continuous recording and to send text and email alerts to the Contractor and RIDOT if the noise limits are exceeded. Data from noise monitoring shall be made available to the Owner in real time. If noise levels exceed the limits of Section 2.1, the Contractor shall immediately halt the offending operation and implement corrective measures before resuming work.

3. Vibration Control Measures

3.1 Vibration Limits

The Contractor shall ensure that construction-related vibrations do not exceed peak particle velocity (PPV) of 1 in/sec, or other lower limit established for nearby sensitive structures or structures housing sensitive equipment.

3.2 Vibration Mitigation Strategies

The Contractor shall employ vibration-reducing techniques, as needed to stay within the allowable thresholds, including:

a. Use of cushioned or hydraulic pile-driving systems.

b. Implementation of vibration isolation mats or trench barriers.

c. Adoption of non-impact drilling methods where feasible.

JS-3

d. The Contractor shall conduct pre-construction vibration assessments to identify sensitive structures (e.g., historic buildings or residential areas) and implement targeted mitigation measures.

3.3 Monitoring and Compliance

The Contractor shall install vibration monitoring equipment at critical locations to measure and record vibration levels during construction. Other monitoring locations include the nearest residence or occupied building to vibration-producing construction activities. Monitoring locations may change based upon the location of construction activities and more than one location may be required to have monitoring systems installed based on the number of construction activities generating vibration and the sensitivity of nearby structures or equipment.

Vibration monitoring equipment shall be capable of measuring vibration accelerations, velocities, and amplitudes in three mutually perpendicular directions in real time. Vibration recording equipment shall have the capability for continuous recording and with automated data transfers and vibration limit alerts (to send text and email alerts to the Contractor and RIDOT if vibration limits are exceeded). Any exceedance of permissible limits shall trigger immediate alert to the project team for immediate corrective action.

4. Community Engagement and Reporting The Contractor shall develop and implement a Community Noise and Vibration Management Plan to address concerns from nearby residents and stakeholders. Regular updates on noise and vibration monitoring results, mitigation efforts, and construction schedules shall be provided to RIDOT for dissemination to the community.

METHOD OF MEASUREMENT

This item will not be measured for payment.

BASIS OF PAYMENT

The cost of all noise and vibration control measures, including equipment, materials, monitoring, and labor, shall be included in the bid price and shall not be eligible for additional compensation unless otherwise specified in the contract.

Deductions for Non-Compliance

If the Contractor fails to implement adequate noise or vibration control measures or exceeds permissible limits, the State may deduct costs associated with corrective actions or may impose penalties, including:

a. A violation shall be defined as any recorded exceedance of noise and/or vibration limits at a monitored location, measured over a 15-minute averaging period for impulse noise and a one-hour averaging period for continuous noise. Each exceedance event shall be subject to independent assessment, and repeated exceedances within a four-hour period at the same location or operation shall be considered separate violations.

b. A monetary penalty of up to $5,000 per violation for each occurrence of noise and/or vibration limits exceedance.

c. Withholding of progress payments until corrective actions are verified.

d. Suspension of work on non-compliant activities until mitigation measures are properly implemented.

e.

Documentation and Records

JS-4

The Contractor shall maintain detailed records of:

f. Noise and vibration monitoring data.

g. Mitigation measures implemented.

h. Corrective actions taken.

i. Complaints received and resolutions provided.

j. These records shall be submitted to the State on a monthly basis.

JS-5

Remove Section 106.01 from the RIDOT Standard Specifications for Road & Bridge Construction, February 2026 in its entirety and replace it with:

CODE 106.01

CERTIFICATION OF MATERIALS

All materials used in the Work shall meet all requirements of the Contract, including the requirements of the “Master Schedule of Testing (MST) for the Preparation of a Project Schedule for Sampling, Testing, and Certification of Materials.” All materials are subject to inspection, which includes acceptance sampling and testing, by the Engineer. Results of testing performed by the Contractor shall not substitute for acceptance testing, and shall only be used by the Contractor for Quality Control purposes. All materials shall be new.

The Contractor shall submit a breakdown of materials included in each item set forth in the Contract Specific Provisions with estimated quantities required for the Department’s use in materials testing and compliance. The breakdown shall be detailed using standard material item codes unless no standard material item code exists. The breakdown shall be submitted on Department approved forms 30 days before work on the item of work begins.

The Department reserves the right to re-inspect any materials at any time before issuing Final Acceptance.

JS-6

Remove Section 106.01.1 from the RIDOT Standard Specifications for Road & Bridge Construction, February 2026 in its entirety and replace it with:

CODE 106.01.1

BUY AMERICA JOB SPECIFICATION (BABA)

Introduction:

While existing Buy America requirements previously applied to iron, steel, and certain manufactured goods, the Infrastructure Investment and Jobs Act (IIJA) expands requirements to include all manufactured products and construction materials in construction contracts that include Federal Aid funding in the construction phase. Additional information available in 23 CFR 635.410 Buy America and it’s Q&A at FHWA's Buy America Q and A for Federal-aid Program - Buy America - Contract Administration - Construction - Federal Highway Administration (dot.gov) [fhwa.dot.gov]

Purpose:

Provide materials from domestic sources when products are permanently incorporated into the work.

Ensure all manufacturing processes, including applications of coatings, occur in the United States. A coating includes all processes required to apply the coating to a product to protect or enhance the value of the product. The requirements of this JS are not applicable to equipment, tools, and temporary items, including materials left in place at the Contractor’s convenience.

Certifications:

All certifications are submitted by the prime Contractor. When submitting certifications for materials that are subject to the requirements of this specification, the certification shall be on Form provided by the Department.

Determination of Material Category:

Foreign or Uncertified Products.

Buy America does not apply to minimal use of steel/iron materials provided that the total cost of all foreign source items used in the contract, as delivered to the project site, is less than $2500 or one-tenth-of-one percent of the total contract amount, whichever is greater.

The total value is that shown to be the cost of the steel and iron products as delivered to the project site. Contractor to keep a log of foreign source items to ensure that the minimal use threshold is not exceeded during the life of the contract

Manufactured Products Provide manufactured products produced in the United States.

A manufactured product is acceptable under this provision if:

The manufactured product was manufactured in the United States; and The cost of the components of the manufactured product that are mined, produced, or manufactured in the United States is greater than 55 percent of the total cost of all

JS-7

components of the manufactured product.

Construction Materials The category of construction materials excludes cement and cementitious materials, aggregates such as stone, sand, or gravel, or aggregate binding agents or additives.

Construction materials are materials that consist primarily of:

Non-ferrous metals.

plastic and polymer-based products (including polyvinylchloride, composite building materials, and polymers used in fiber optic cables);

glass (including optic glass);

lumber; or drywall.

Waivers:

The Contractor may submit a waiver request to the department using RIDOT procedures and form provided in the PMP document management folder. The form must reflect a detailed justification for the use of goods, products, or materials mined, produced, or manufactured outside the United States and including copies of all documentation verifying the unavailability of the material or product.

The Department will submit approved waiver requests to FHWA for review. The Contractor shall investigate and respond to any public comments made to the FHWA Office of Program Administration, indicating that a domestic supplier cannot provide the material for which a waiver has been requested.

Final approval of the Buy America Waiver request will be made by the Administrator, Federal Highway Administration. The waiver will be effective the date following publication in the Federal Register.

Contractor fully understands there is no guarantee a waiver request will be approved. Any contract delays caused by this waiver process will be the sole responsibility of the contractor.

The contractor shall be responsible for all cost associated with any of the construction materials that are permanently incorporated into the project that does not meet the requirements of this Special Provision without prior written approval from the Department, up to and including removal and replacement.

The Contractor may submit a waiver request to the department during construction:

1. Determine which type of the three waivers applies.

• Public Interest Waiver: applying the domestic content procurement preference would be inconsistent with the public interest. A waiver in the public interest may be appropriate where the approving federal agency determines that other important policy goals cannot be achieved consistent with the IIJA requirements, and the proposed waiver would not meet the requirements for a nonavailability or unreasonable cost waiver.

• Nonavailability Waiver: for types of iron, steel, manufactured products, or construction materials that are not produced in the United States in sufficient and reasonably available quantities or of a satisfactory quality.

• Unreasonable cost waiver: the inclusion of iron, steel, manufactured products, or construction materials produced in the United States will

JS-8

increase the cost of the overall project by more than 25 percent. Provide documentation that no domestic alternatives are available within this cost parameter. Document in the waiver a comparison of the cost of the domestic product to the cost of the foreign product or a comparison of the overall cost of the project with domestic products to the overall cost of the project with foreign-origin products.

2. Contractor shall prepare waiver documentation including waiver form provided by RIDOT; located in the PMP portal and submit to the Department’s Project Manager with a cc: to the Construction Manager (RE)

3. RIDOT/Project Manager to Submit waiver to Federal Highway Division.

4. Federal Highway Division submits the waiver to the Made in America Office. All waivers have to be submitted by Federal agencies to the Made in America Office.

Project specific waivers require a minimum of 15 calendar day public comment period. General applicability waivers are subject to a minimum 30 calendar day public comment period. Federal agencies are responsible for performing due diligence and approving or rejecting waivers.

JS-9

CODE 108.03

PROSECUTION AND PROGRESS – SCHEDULE LEVEL

In accordance with Section 108.03, PROSECUTION AND PROGRESS, Para. a., General Requirements, 1 Project Schedule Program

The Schedule Level for this contract is Schedule Level B.

JS-10

CODE 108.10

PROSECUTION AND PROGRESS

There is no Winter Shutdown for this project, the following revisions apply:

101.29 CONTRACT TIME - The number of days allowed for the completion of the Contract or the date by which the Contract shall be completed as stated in the Proposal, including any approved time extensions. The Contract Time does not include Winter Shutdown. The terms

“Contract Time” and “Contract Completion Date” are used synonymously.

105.14 WINTER SHUTDOWN – This specification is deleted from the contract. This project does not have a winter shutdown.

Phase Completion:

Bridge No. 005051: Ashaway River Bridge - New Bridge Open to Traffic, as defined as all travel lanes shall remain open other than temporary overnight closures.

The following fine/charge for not completing all work on November 10, 2027 – $3,500 per calendar day:

Bridge No. 005251: Potter Hill Bridge - New Bridge Open to Traffic, as defined as all travel lanes shall remain open other than temporary overnight closures.

The following fine/charge for not completing all work on August 14, 2028 – $3,500 per calendar day:

Substantial Completion: The following fine/charge for not completing contract work according to

Section 101.89 by October 23, 2028, is $1,950 per day.

Final Acceptance: All Contract work shall be completed as defined by Section 105.18 by October 23, 2029, or a Daily Charge will be deducted from any money due in the amount of $1,950 per day.

JS-11

Remove Section 109.07 from the RIDOT Standard Specifications for Road & Bridge Construction, February 2026 in its entirety and replace with:

CODE 109.07

PARTIAL PAYMENT OF LUMP SUM ITEMS

The Contractor shall submit a breakdown of the cost of Lump Sum items to enable the Engineer to make partial payments as the Work is performed. The breakdown shall detail both standard and job specific specification codes associated with the Lump Sum item and estimated quantities for the Department’s use for materials testing and compliance in accordance with 106.01. Lump sum item breakdowns shall be submitted on Department approved forms within 70 days of the Apparent Low Bidder letter so that it can be incorporated into the Step 6 Baseline Schedule – Bid Item Loaded submission. The Engineer reserves the right to reject the Contractor’s Lump Sum item breakdown if the breakdown does not fairly represent the Work to be performed and the materials included. The Engineer may make progress payments based on quantities and/or prices determined by the Engineer.

JS-12

CODE 201.9901

REMOVE AND STOCKPILE BRIDGE CLOSURE TRAFFIC DEVICES

DESCRIPTION:

Under this item the Contractor shall remove, transport and stockpile all bridge closure traffic devices to a State facility. The work shall consist of removing and transporting waterfilled plastic barriers, bridge closed signs, sign stands and traffic cones on Laurel Street at High Street and at Ashaway River Bridge No. 050 and stockpiling these devices at a RIDOT Maintenance facility.

MATERIALS:

The Contractor shall be responsible for damage to the traffic devices incurred during removal and transport to the specified location. All replacements due to damage or loss by the Contractor shall be made at the Contractor's expense.

CONSTRUCTION METHOD:

The Contractor shall remove and transport bridge closure traffic devices to a RIDOT Maintenance facility at 51 Bank St, Hope Valley where they will be stockpiled.

METHOD OF MEASUREMENT:

Remove And Stockpile Bridge Closure Traffic Devices shall be measured as a lump sum.

BASIS OF PAYMENT:

The Department will pay for the completed and accepted quantities as follows:

Pay Item Pay Unit Remove And Stockpile Bridge Closure Traffic Devices LS

JS-13

CODE 202.9901

CONTAMINATED SOIL

DESCRIPTION:

All excess excavated soil generated by any class of excavation shall be tested for contamination before disposal or exported to another site.

CONSTRUCTION METHOD:

All excavation that generates excess soil that cannot be reused on site under applicable provisions of the RIDOT Standard Specifications shall be stockpiled and tested according to the provisions of Section

215.03.1 of the RIDOT Standard Specifications. If soil is encountered that displays evidence of potential contamination, such as might be indicated by staining, odors, the presence of anthropogenic fill materials such as ash, wood, or metallic debris, or field screening results that indicate the presence of volatile organic vapor at levels above background, the affected soil shall be segregated and characterized separately from material that does not display evidence of potential contamination. The Contractor shall classify each area of excess soil in accordance with Section 202.02.3 of the Standard Specifications.

METHOD OF MEASUREMENT:

“CONTAMINATED SOIL” will not be measured for payment.

BASIS OF PAYMENT:

The Department has established “CONTAMINATED SOIL” as an only acceptable bid.

“CONTAMINATED SOIL” shall be $1.00 per each. The Department has estimated a quantity of 100,000 each.

JS-14

CODE 202.9902

STOCKPILE AND PLACE RIVERBED MATERIAL

DESCRIPTION:

The Contractor shall stockpile, handle, and place excavated riverbed material to be spread over riprap for scour protection as shown on the Plans and as directed by the Engineer in accordance with the Rhode Island Standard Specifications for Road and Bridge Construction (latest edition), these Special Provisions, and all applicable permits.

CONSTRUCTION METHODS:

Stockpile excavated rived bed material a minimum of 50 ft from surface waters unless otherwise approved. Install perimeter sediment controls and runoff management according to Sections 206.

Construct stockpiles on firm, clean, non-erodible surface. Place geotextile or membrane if needed to prevent subgrade contamination. Cover material as necessary to limit wind/water erosion. Provide dust control according to Section 907.

Backfill riprap for scour protection in the channel and on the embankment, above ordinary high water, with excavated native riverbed material (from stockpile). Dump riverbed material over installed channel riprap to a maximum depth of 2 ft. Place riverbed material on the installed embankment riprap and tamp until all voids are filled. Ensure all embankment riprap is completely covered with placed material to form an evenly graded slope. Continue to place material on the embankment until a grade 4” above the riprap surface is achieved. Feather with low, controlled pushes; use skimming passes with excavator buckets. Keep drop heights low. Maintain completed work until acceptance. Repair areas disturbed by subsequent operations or storm events prior to acceptance.

Reuse excess material on site if it conforms to the requirements of subsection M01.01. Test material prior to final placement on the Project.

METHOD OF MEASUREMENT:

Stockpile and Place Riverbed Material will be measured by the cubic yards in-place as surveyed or calculated from stockpile.

BASIS OF PAYMENT

The Department will pay for the completed and accepted quantities as follows:

Pay Item Pay Unit Stockpile and Place Riverbed Material CY

The price constitutes full compensation for all labor, materials, equipment, tools, stockpiling, handling, environmental protection, placement, grading and shaping, material testing and all other incidentals required to finish the work, complete and accepted.

JS-15

CODE 703.9901

CASCADE SEPARATOR CS-5 (STU A-3)

DESCRIPTION:

This work consists of furnishing and installing a Cascade Separator CS-5 (STU-A3) complete and operable, and furnishing all labor, equipment, materials, and incidentals as indicated in the plans and details, as described in these Specifications, or as otherwise needed to complete the work shown on the Plans and/or as directed by the Engineer.

MATERIALS:

The housing unit of the Cascade Separator CS-5 shall be constructed of pre-cast concrete, no exceptions.

Precast concrete components shall conform to the applicable sections of ASTM C 478, ASTM C 857 and ASTM C 858 and the following:

Concrete shall be Class XX and achieve a minimum 28-day compressive strength of 4,000 pounds per square-inch (psi) that conforms to Section 601;

Unless otherwise noted, the precast concrete sections shall be designed to withstand lateral earth and AASHTO H-20 traffic loads;

Cement shall be Type III Portland Cement conforming to ASTM C 150;

Aggregates shall conform to ASTM C 33;

Reinforcing steel shall be deformed billet-steel bars, welded steel wire or deformed welded steel wire conforming to ASTM A 615, A 185, or A 497.

Joints shall be sealed with performed joint sealing compound conforming to ASTM C

990.

Shipping of components shall not be initiated until a minimum compressive strength of

4,000 psi is attained or five (5) calendar days after fabrication has expired, whichever occurs first.

The internal component and appurtenances of the Cascade Separator CS-5 shall conform to the following:

Hardware shall be manufactured of Type 316 stainless steel conforming to ASTM A 320;

Support brackets shall be manufactured of 5052 aluminum Fiberglass components shall conform to applicable sections of ASTM D-4097 Polypropylene copolymer components shall conform to a tensile strength of 3,600 psi

(ASTM D-638), and Izod impact value of “no break” (ASTM D-256).

Access system(s) conform to the following: Manhole castings shall be designed to withstand AASHTO H-20 loadings and manufactured of cast-iron conforming to ASTM A 48 Class 30.

CONSTRUCTION METHODS:

Coordinate with utility company representatives prior to beginning work in order to verify and document the horizontal and vertical location of all overhead and underground utility facilities. Verify and document the horizontal and vertical location of RIDOT-owned drainage, lighting, and communication and data systems. Complete construction and installation of new features in dry conditions. Design, JS-16 furnish, install, maintain, and remove any required temporary stormwater runoff diversions, sediment controls, dewatering basins, structures, and equipment. Perform all work in accordance with the Plans, the Specifications, and manufacturer’s recommendations.

Exercise care in the storage and handling of the stormwater treatment device (SWTD) components prior to and during installation. Any repair or replacement costs associated with events occurring after delivery is accepted and unloading has commenced shall be borne by the contractor.

Install the SWTD in accordance with the manufacturer’s recommendations and related sections of the contract documents. The manufacturer shall provide the contractor installation instructions and offer on-site guidance during the important stages of the installation as identified by the manufacturer at no additional expense. Provide a minimum of 72 hours’ notice to the manufacturer prior to their performance of the services included under this subsection.

Fill all voids associated with lifting provisions provided by the manufacturer. Fill these voids with non-shrinking grout providing a finished surface consistent with adjacent surfaces. Trim all protruding lifting provisions flush with the adjacent concrete surface in a manner which leaves no sharp points or edges.

Remove all loose material and pooling water from the SWTD prior to the transfer of operational responsibility to the Owner.

METHOD OF MEASUREMENT:

The Cascade Separator CS-5 (STU-A3) shall be measured per each.

BASIS OF PAYMENT:

The Department will pay for the completed and accepted quantities as follows:

Pay Item Pay Unit Cascade Separator CS-5 (STU-A3) EACH

The price constitutes full compensation for all labor, materials, tools, and equipment for furnishing and placing the units including excavation, dewatering, stone bedding, backfill, compaction, and all other incidentals required to finish the work, complete and accepted.

JS-17

CODE 703.9902 INFILTRATION TRENCH (STU-M1)

CODE 703.9903 LINED SAND FILTER TRENCH (STU-P1)

CODE 703.9904 LINED SAND FILTER TRENCH (STU-A1)

CODE 703.9905 INFILTRATION TRENCH (STU-A2)

The work under this item shall conform to the relevant sections of the Specifications and the following:

DESCRIPTION:

This work includes constructing the infiltration trench stormwater treatment units (STU-M1 and STU-A2) and lined sand filter trench stormwater treatment units (STU-P1 and STU-A1), including excavation, crushed stone, and filter fabric for infiltration trench stormwater treatment units, and excavation, crushed stone, sand, filter fabric, perforated underdrain pipe within STU and unperforated pipe for drain to outfall, and PVC impermeable liner for lined sand filter trench stormwater treatment units, in reasonably close conformity with the required dimensions and details.

MATERIALS:

Crushed Stone Shall be clean, washed stone conforming to gradation listed in Section M1.09, Table 1, Gradation

- Percent Passing, Column II

Sand (STU-P1 and STU-A1) Shall be ASTM C-33 Sand

Filter Fabric Shall be nonbiodegradable, nonwoven, 100% polypropylene black fabric and conforms to Section

703.02.2 and the minimum specifications of Section M20.02

Perforated and Unperforated Pipe (STU-P1 and STU-A1) Shall be perforated and unperforated polyvinyl chloride pipe that conforms to Section M04.01.6

PVC Impermeable Liner (STU-P1 and STU-A1) Shall conform to Section M04.01.8

CONSTRUCTION METHODS:

The Contractor shall perform the following work:

Coordinate with utility company representatives prior to beginning work to verify and document the horizontal and vertical location of all overhead and underground utility facilities. Verify and document the horizontal and vertical location of RIDOT-owned drainage, lighting, and communication and data systems. Complete construction and installation of new features in dry conditions. Design, furnish, install, maintain, and remove any required temporary stormwater runoff diversions, sediment controls, dewatering basins, structures, and equipment. Perform all work in accordance with the Plans, the Specifications, and manufacturer’s recommendations.

The contractor shall excavate, remove and dispose of the existing subgrade and topsoil within limits of the proposed infiltration trench as specified in the Plans. While the infiltration trenches are under construction, the contractor shall ensure the trenches are not subjected to sedimentation and siltation from

JS-18

erosion using applicable best management practices. Installation of filter fabric shall strictly conform to the manufacturer’s guidelines and as modified herein. The surface of the sides of the trench must be smooth and compacted. All rock, dirt clods, grass clumps, trash and other obstructions that will prevent the mat from laying in direct contact with the sides of the trench and which may cause the fabric to puncture, or tear must be removed. A minimum overlap width of two feet must be used. Anchor pins must be installed immediately after placement of each section to protect them from wind uplift.

Following installation of the filter fabric along the vertical sides of the trench, crushed stone shall be placed and backfilled within the trench and well compacted up to the depth specified for the placement of the horizontal layer of filter fabric. The surface of the crushed stone must be smooth upon installation of the horizontal layer of filter fabric to minimize puncture. The top layer of crushed stone shall be installed above the horizontal layer of filter fabric to grade.

Impermeable Liner (STU-P1 and STU-A1)

Place 30-mil impermeable liner as detailed on the Plans, in accordance with the manufacturer’s recommendations, and/or as directed by the Engineer.

If dewatering is required to properly install the impermeable liner, design and construct a dewatering system before installing the liner. Use dewatering system that conforms to the applicable requirements of Section 208 of the Specifications.

All surfaces to receive the impermeable liner shall be smooth, free of all foreign and organic material, sharp objects, or debris of any kind. These surfaces shall provide a firm, unyielding foundation with no sharp changes or abrupt breaks in grade.

For the impermeable liner, obtain the general placement requirements, seam and overlap requirements, placement procedures, and repair methods from the manufacturer. Follow all manufacturers’ guidelines to ensure proper installation and satisfactory performance. Obtain from the manufacturer and install fully effective prefabricated boots, or an equivalent, to form a permanent watertight seal around any pipe or structure that will pass through the membrane. The final product must be a permanent watertight system.

Accomplish field seaming by using either chemical or thermal methods, depending upon manufacturer’s recommendations. Effective field seaming is critical in the overall performance of the impermeable liner.

The seam must produce the strength and characteristics of the liner, which must not be damaged in the seaming process. Account for environmental factors that may affect proper seam construction, including:

ambient temperature, relative humidity, wind uplift, changes in liner temperature, subsurface water content, type of supporting surface, skill of the seaming crew, quality and consistency of chemical or welding materials, preparation of liner surfaces to be joined, moisture at the seam interface, and cleanliness of the seam interface. Test field prior to placement of cover materials. Test procedures shall include visual inspection, non-destructive testing using an air lance or equivalent method, and destructive testing for seam strength and peel adhesion, all in accordance with manufacturer’s guidelines. Submit all test results for approval by the Engineer.

Upon acceptance of the test results, carefully cover the impermeable liner with crushed stone, as indicated on the Plans, to prevent damage to the liner.

METHOD OF MEASUREMENT:

The Infiltration Trenches and Lined Sand Filter Trenches shall be measured as a lump sum.

JS-19

BASIS OF PAYMENT:

The Department will pay for the completed and accepted quantities as follows:

Pay Item Pay Unit Infiltration Trench (STU M-1) LS Lined Sand Filter Trench (STU P-1) LS Lined Sand Filter Trench (STU A-1) LS Infiltration Trench (STU A-2) LS

The price shall constitute full compensation for all labor, materials, tools, equipment, and incidentals necessary to satisfactorily complete this work as described in these Special Provisions and elsewhere in the Contact Documents, complete in-place and accepted.

JS-20

CODE 703.9906

PERMEABLE GRASS PAVERS FOR EROSION PROTECTION

The work under this item shall conform to the relevant sections of the Specifications and the following:

DESCRIPTION:

This work includes constructing a permeable grass paver for erosion protection in reasonably close conformity with the required dimensions and details.

MATERIALS:

Paver Grid Use a Paver Grid that conforms to a NDS TT-24 Tuff Track Permeable HDPE Grass Paver or approved equal with the following properties:

Manufacturer: NDS, Inc., 851 North Harvard Avenue, Lindsay, California 93247. Toll Free 800- 726-1994. Phone 559-562-9888. Toll Free Fax 800-726-1998. Fax 559-562-4488. Website www.ndspro.com. Email nds@ndspro.com.

Use injection-molded, nested-honeycomb, polyolefin plastic-panel pavers for permeable, natural paved environments.

Use load-bearing paving system.

Use full rigid base course to prevent pavers from being pressed into subbase Use 100 percent recycled polyolefin plastic with carbon black for UV stabilization Use 100 percent recyclable content Paver Size: 24 inches by 24 inches by 1-1/2 inches high.

Wall Thickness: 0.12 inches.

Cells: 2-1/2 inches, 120 per paver, hexagon shape, nested honeycomb Bottom of Each Cell: 1-1/4-inch-diameter hole in center, six 0.475-inch by 0.212-inch perimeter slot openings through bottom of paver, one opening at bottom of each cell wall to discourage root girdling within cell.

Bottom Surface of Pavers: Flat, without vertical posts or obstructions.

Top Surface of Pavers: Smooth, without notches or grooves.

Latching System Between Pavers: Tongue-and-groove latching system molded around perimeter lock pavers together, does not require additional parts or tools, tongues 1-inch x 1-inch x 0.12-inch thick, grooves 1-inch x 0.12-inch

Bottom Open Area: Greater than 41 percent, across entire bottom surface Total Bottom Open Area per Paver: Greater than 228 square inches.

Paver Color: Black.

Nominal Coverage Area per Paver: 4 square feet.

Weight per Paver: 4.5 pounds.

Chemical Resistance: Superior chemical resistance; totally inert.

Paver Compressive Strength, Empty Cells: 86,563 lbs. (601 psi) Paver Compressive Strength, Cells Filled: 400,000 lbs.

Anchors Use NDS 3/8-inch x 12-inch-long galvanized steel stakes (Part No. GPSTAKES) with Fastenal or equivalent 3/8-inch I.D. x 2” O.D. X 0.406” Thick Fender Washers.

JS-21

AASHTO #57 Base Stone Use clean, washed coarse aggregate stone that conforms to 100% passing 1 1/2" screen, 95-100% passing 1" screen, 25-60% passing 1/2" screen, 0-10% passing #4 screen, and 0-5% passing #8 screen, Filter Fabric Use nonbiodegradable, nonwoven, 100% polypropylene black fabric that conforms to Section 703.02.2 and the minimum specifications of Section M20.02

Loam Use loam that conforms to Subsection L01.02

Seed Use seed that conforms to Subsection L02.02

Erosion Control Blankets Use erosion control blankets that conform to Subsection L05.02

CONSTRUCTION METHODS:

The Contractor shall perform the following work:

Coordinate with utility company representatives prior to beginning work in order to verify and document the horizontal and vertical location of all overhead and underground utility facilities. Verify and document the horizontal and vertical location of RIDOT-owned drainage, lighting, and communication and data systems. Complete construction and installation of new features in dry conditions. Design, furnish, install, maintain, and remove any required temporary stormwater runoff diversions, sediment controls, dewatering basins, structures, and equipment. Perform all work in accordance with the Plans, the Specifications, and manufacturer’s recommendations.

Construction methods shall conform to Subsections 202.03, L01.03, L02.03, L05.03 of the Standard Specifications and the following:

The contractor shall excavate, remove and dispose of the existing subgrade and bituminous pavement or topsoil within limits of the proposed permeable grass paver as specified in the Plans. The contractor shall ensure that the work area is not subjected to sedimentation and siltation from erosion using the best applicable management practices.

Paver installation shall not occur when excavated and exposed subgrade native soil area that is to receive the base course has ponding water or ice.

Trim and fine grade the subgrade for the AASHTO #57 stone and compact to 95 percent of maximum density according to Subsection 202.03.3. Perform this operation before placing the fabric and stone.

Installation of filter fabric shall strictly conform to the manufacturer’s guidelines and as modified herein.

The surface of the sides of the trench must be smooth and compacted. All rock, dirt clods, grass clumps, trash and other obstructions that will prevent the fabric from laying in direct contact with the sides of the trench and which may cause the fabric to puncture, or tear must be removed. A minimum overlap width of two feet must be used. Anchor pins must be installed immediately after placement of each section to protect them from wind uplift.

JS-22

Following installation of the filter fabric along the vertical sides of the trench, coarse aggregate stone shall be placed and backfilled within the trench and well compacted to the depth specified. The coarse aggregate stone shall be installed to the bottom of the paver grid graded in a manner to promote surface runoff away from the edge of pavement.

Place AASHTO #57 stone in lifts not to exceed 6 inches and compact with one to three passes of 5-ton steel wheel roller.

Paver Grids Install paver grids by placing units with cells facing up and connecting tongue and groove locks.

NDS recommends installing pavers in a staggered pattern.

Clearance: Leave 1-inch-minimum clearance between paver grids and fixed objects or surface structures.

Top of Cells: Leave top of cells 1/4 inch to 1/2 inch below surface of adjacent hard-surface pavements.

Re-inspect paver tongue and groove locking prior to filling with topsoil if not filled on same day of installation. Make necessary corrections if displacement has occurred since installation.

Remove and replace with new pavers where 3 or more adjacent cells are broken nor damaged.

Provide a 1-inch minimum horizontal clearance between the roadway edge and the paver grid.

Fill the loam in cells as pavers are laid in sections. Extend the loam inside paver grid an additional 1/2 inch above paver grid surface and match the proposed finished grade. Protect paver grid area until grass is sufficiently established to handle traffic. When loam is properly installed, paver cells will have minimum visibility.

Seed within 30 days of paver grid installation.

Use erosion control blankets to increase soil stabilization and decrease erosion while vegetation takes root.

Erosion control blankets may be used in areas where shade or cold temperatures increase seed germination time.

Grid paver work area shall only be opened to traffic when sufficient grass cover has been established to handle traffic.

METHOD OF MEASUREMENT:

The Permeable Grass Paver for Erosion Protection shall be measured by the square yard.

BASIS OF PAYMENT:

The Department will pay for the completed and accepted quantities as follows:

Pay Item Pay Unit Permeable Grass Paver for Erosion Protection SY

The price shall constitute full compensation for all labor, materials, tools, equipment, including excavation, AASHTO #57 base stone, paver grid, filter fabric, loam and seed, compaction, trimming and fine grading, erosion control blankets, removal and disposal of existing pavements, and all incidentals necessary to satisfactorily complete this work complete in-place and accepted.

JS-23

CODE 712.9901 INSTALLATION OF TEMPORARY GAS MAIN –

BRIDGE #005201

CODE 712.9902 INSTALLATION OF TEMPORARY GAS MAIN –

BRIDGE #005101

CODE 712.9903 INSTALLATION OF TEMPORARY GAS MAIN –

BRIDGE #005001

CODE 712.9904 INSTALLATION OF NEW GAS MAIN – BRIDGE

#005201

CODE 712.9905 INSTALLATION OF NEW GAS MAIN – BRIDGE

#005101

CODE 712.9906 INSTALLATION OF NEW GAS MAIN – BRIDGE

#005001

DESCRIPTION.

This item shall consist of installing temporary by-pass gas mains and new permanent gas mains in accordance with the plans and with this section and shall conform with the additional provisions set forth below.

MATERIALS.

Materials for this work shall conform to the RIDOT Standard Specifications for Road & Bridge Construction, February 2026, with all revisions, together with the additional provisions set forth below.

Rhode Island Energy will supply the gas main materials.

CONSTRUCTION METHODS.

The work associated with these items shall be performed by a Rhode Island Energy approved gas subcontractor, see the CS pages. The work shall be in accordance with the requirements indicated on the plans and CS pages. Rhode Island Energy crews will perform activations, cut-off’s and tie-ins.

METHOD OF MEASUREMENT.

The installation of these items shall be measured for payment by lump sum.

BASIS OF PAYMENT.

The Department will pay for the completed and accepted quantities at the Contract unit prices as follows:

Pay Item Pay Unit

Installation of Temporary Gas Main – Bridge #005201 LS

Installation of Temporary Gas Main – Bridge #005101 LS

Installation of Temporary Gas Main – Bridge #005001 LS

Installation of New Gas Main – Bridge #005201 LS

Installation of New Gas Main – Bridge #005101 LS

Installation of New Gas Main – Bridge #005001 LS

The prices constitute full compensation for all labor, tools, materials and equipment, and all incidentals required to satisfactorily finish the work as described in this Special Provision and elsewhere in the Contract Documents, complete in place and accepted by the Engineer. Partial payments for this Lump Sum item will be made in accordance with Section 109.07.

JS-24

CODE 800.9901

ASHAWAY RIVER BRIDGE NO. 050

DESCRIPTION:

Except for the excluded items of work indicated below, the work under this item shall consist of constructing Ashaway River Bridge No. 050 in its entirety. This shall comprise all work pertaining to the construction of:

800.9904 – Prefabricated Bridge Units o 800.9905 – Steel Press-Brake-Formed Tub Girder (PBFTG) o 808.1501 - Concrete Superstructure Class HP ¾” Bridge Decks o 810.0210 - Galvanized Bar Reinforcement Grade 60 o 824.2000 - AASHTO M270 Grade 50 Steel Metallized/galvanized and Painted o 824.2200 - Welded Stud Shear Connectors 7/8 inch diameter

803.0100 – Removal of Existing Bridge-Related Structures

805.9901 – Temporary Earth Retaining System

805.9902 – Temporary Utility Support System

808.0322 – Concrete Substructure Class HP ¾” End Posts

808.0502 – Concrete Substructure Class XX ¾” Abut Footing

808.0506 – Concrete Substructure Class HP ¾” Abut Stems

808.0508 – Concrete Substructure Class XX ¾” Approach Slabs

808.0602 – Concrete Substructure Class HP ¾” Backwalls

808.1502 – Concrete Superstructure Class HP ¾” Bridge Sidewalks

808.1503 – Concrete Superstructure Class HP ¾” Parapets

808.9901 – Ultra High-Performance Concrete (UHPC)

810.0210 – Galvanized Bar Reinforcement Grade 60

813.0100 – Dampproofing

813.0210 – Heat-Applied Prefabricated Membrane

820.0100 – Concrete Surface Treatment Protective Sealer

821.0100 – Saw & Sealing Joints in Asphalt Concrete Pavement

823.1750 – Asphaltic Expansion Joint System

828.0303 – Elastomeric Bearings Laminated

830.1000 – Metal Bridge Railing

833.0400 – Granite Identification Tablets

834.0100 – Granite Curb for Bridges Any other incidental items required

Costs associated with testing, handling, hauling, stockpiling, loading, and proper disposal of contaminated material shall be paid under Item Code 202.9901 “CONTAMINATED SOIL”

All of the above work shall be complete in place and accepted in accordance with the Contract Documents except that the Method of Measurement and the Basis of Payment will be in accordance with these Special Provisions.

Excluded Items of Work:

203.0100 – Structural Excavation Earth

203.0510 – Cofferdams

203.0700 – Pervious Fill

401.3100 – Modified Class 9.5 HMA

JS-25

803.0500 – Temporary Deck Underside and Side Protective Shielding

844.0200 – Micropile

844.0300 – Verification Load Test

844.0400 – Proof Load Test

920.0330 – Riprap R-6, R-7, R-8 Standard 8.3.0

METHOD OF MEASUREMENT:

“Ashaway River Bridge No. 050” will not be measured separately for payment.

BASIS OF PAYMENT:

The Department will pay for the completed and accepted quantities as follows:

Pay Item Pay Unit Ashaway River Bridge No. 050 LS

The price so stated shall constitute full and complete compensation for all labor, materials, tools, equipment, and all other incidentals required to…