Special_Provisions.pdf

ADA COUNTY HIGHWAY DISTRICT (ACHD)

ACHD PROJECT NO. 524019

2026 ARTERIAL AND COLLECTOR CAPITAL MAINTENANCE

POPLAR ST, COLE RD TO CURTIS RD

Special Provisions to modify the

2025 Idaho Standards for Public Works Construction (ISPWC)

ACHD Supplement to the 2025 ISPWC

Prepared by

October 2026

This stamp certifies the attached modifications to the ISPWC and ACHD supplemental provisions. It does not certify the ISPWC or adopted ACHD supplemental provisions.

ashtopau

PASHTON-PE-ID

Special Provisions ACHD Project No. 524019 2026 Arterial and Collector Capital Maintenance October 2026 Bid Documents (100%) Page 1 of 42

SPECIAL PROVISIONS

Project Name: 2026 Arterial and Collector Capital Maintenance; Poplar St, Cole Rd to Curtis Rd Project No.: 524019 GIS No.: 103550

GENERAL NOTES

1. ACCESS DURING CONSTRUCTION

Local and emergency vehicle access to adjacent properties shall be maintained at all times. Access to and from driveways and approaches shall remain open to traffic at all times except for minor closures (must be coordinated with ACHD and the project inspector) while work is being performed adjacent to the approach or access. This shall include providing an adequate surface (free of protruding rocks, holes, and mud) for all emergency vehicles and pedestrians. The Contractor shall work with business owners to ensure access is maintained outside of any minor closures (must be coordinated with ACHD and the project inspector). The cost to maintain access shall be considered incidental to other items of work and no separate payment will be made.

2. ACHD OWNED CONDUIT IMPACTS

ACHD-owned conduit may be shallow and located directly behind the curb or under the sidewalk. The Contractor’s method of sidewalk and/or curb removal shall be done in a manner to avoid damage to conduit and fiber. Any damage shall be repaired at the Contractor’s expense.

3. AMERICANS WITH DISABILITY (ADA) ACCESS DURING CONSTRUCTION

The needs and control of all road users (motorists, bicyclists, and pedestrians within the highway and/or public right-of-way, including persons with disabilities in accordance with the Americans with Disabilities Act of 1990 (ADA), Title II, Paragraph 35.130) through a temporary traffic control “TTC” zone shall be an essential part of highway construction, utility work, maintenance operations, and the management of traffic incidents. The primary function of TTC is to provide for the reasonably safe and efficient movement of road users through or around TTC zones while reasonably protecting workers, responders to traffic incidents, and equipment.

Temporary facilities, including reasonably safe pedestrian routes around work sites, are also covered by the accessibility requirements of the Americans with Disabilities Act of 1990 (ADA) (Public Law 101-336, 104 Stat.327, July 26, 1990. 42 USC 12101-12213 (as amended)). Implementation of TTC plans and installation and maintenance of devices shall be the responsibility of the contractor performing the construction, alteration and/or maintenance of the highway or public right-of-way. Temporary traffic control for pedestrians shall meet the accessibility requirements (Standards) set forth in Part 6 of the MUTCD. When an existing continuous sidewalk or street crossing route cannot be maintained for pedestrians because of construction, either temporary walkways with curb ramps are to be provided, or

Bid Documents (100%) Page 2 of 42 the construction shall be phased to maintain access to the affected addresses. Contractors shall be allowed flexibility as long as the requirements are met.

The location of the construction project and whether or not accessible facilities are present shall also determine the extent of the needed temporary facilities. The contractor is only required to maintain practical continuity where accessible facilities already exist. On low-speed rural roads that do not have sidewalks and are used by bicyclists, no additional measures are needed as the bicycles can share the available travel lanes with other traffic. On moderate to higher speed rural roads, if a bike lane exists then it should be properly detoured, complete with signage, to provide a safe route through or around the work area. If a road or bridge project affects vehicular traffic to a business, residence, school or any other type of pedestrian generating location with existing accessible facilities, then pedestrian and handicapped access must be maintained.

A continuous route for all pedestrians, including people with disabilities and bicyclists, shall be maintained at all times. When existing pedestrian facilities are disrupted, closed, or relocated in a TTC zone, the temporary facilities shall be detectable and include accessibility features consistent with the features present in the existing pedestrian facility. The temporary route should enable pedestrians to bypass the construction site while minimizing the retracing of their steps or going significantly out of their way. Additional consideration must be given to people with disabilities since they may not have the physical or cognitive ability to improvise (e.g. balancing along the curb or a very narrow path) or use unofficial alternatives (e.g. using an adjacent grass surface). Temporary routes must meet the accessibility guidelines of the ADA for permanent facilities as well as the Public Right-Of-Way Accessibility Guidelines (PROWAG) and shall be marked with the proper signage. Should existing crosswalks at signalized intersections be closed or made inaccessible, temporary crosswalks should be painted in an accessible location. Temporary signals should include pedestrian phases.

Contractors shall not block temporary walkways with contractor parking, materials piles, signs, rubble or rubbish. Construction equipment and equipment operation must be separated from the temporary walkways. At work zones where higher volumes of pedestrian traffic or school children exist, pedestrian fences or other protective barriers may be needed to prevent access into the construction area.

Detour and diversion routes, when used for pedestrians and bicyclists, should be evaluated for the following items:

• Direct conflicts between pedestrians and vehicular traffic, work vehicles, and other work activities must be reduced with protective barriers or continuous high contrast fencing (min 36” high with a 6” high toe board). See MUTCD 6F.68 and 6D.02; PROWAG R303.

• Temporary pedestrian facilities should provide safe, accessible routes that replicate as nearly as practical the most desirable characteristics of the existing facility, and parallel the disrupted route whenever possible. A smooth, continuous hard surface should be provided throughout the entire length of the temporary pedestrian facility. There should be no curbs or abrupt changes in grade or terrain that could cause tripping or be a barrier to wheelchair use. The geometry and alignment of the facility should meet the applicable requirements of the Americans with Disabilities Act Accessibility Guidelines (ADAAG) for Buildings and Facilities. See MUTCD 6D.01 and 6D.02; PROWAG R303.3 and R302.6.

• Advance information placed at appropriate distances before the work zone allowing pedestrians to make timely decisions about routes through or around the work zone. See MUTCD 6F.14;

PROWAG 303.2.

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• Transition information allowing pedestrians to find a safe path through and around work zones, which is critical when the pathway is restricted, diverted or detoured. See MUTCD 6F.14;

PROWAG R303.2.

• Work area information assisting in safe passage of pedestrians through the work zone. This information is needed on all pedestrian routes except detours. See MUTCD 6F.14.

• Exit information directing pedestrians back to the original route. See MUTCD 6F.14.

• Crosswalk placement at intersections may need additional signage, temporary striping, traffic signal modification, pedestrian signals with audible alarms if justified, proper push button height, and ramps. See MUTCD 6H.29, 6F.80, and 4E.06; PROWAG R303.5 and R304.

• Accommodations for other transit forms (busses, trains etc.) are made. See MUTCD 6D.02.

• Requirements of the ADAAG, PROWAG, and MUTCD are adhered to.

• Access is maintained to the affected businesses and residences.

4. ASPHALT AND CONCRETE CUTTING

Asphalt pavement and concrete cutting shall be incidental to other items of this contract. Contractor shall ensure that cuts made in asphalt and concrete for trenches are parallel and do not wander or diverge from the intended line.

Dust produced by asphalt or concrete saw cuts shall be collected using a high-powered vacuum dust control system, eliminating the dust from entering the atmosphere. The suction device shall be attached to the cutting equipment or positioned to assure a maximum amount of dust will be collected before it can be released into the atmosphere. The cost to ensure dust is collected during asphalt and concrete cutting shall be considered incidental to the cost of the project, and no additional compensation will be made.

5. BASIS OF PAYMENT

Except as modified herein, the various roadway work called for on the Bid Schedule shall be performed, measured, and paid for as indicated on said Bid Schedules and as provided in the 2025 IDAHO STANDARDS FOR PUBLIC WORKS CONSTRUCTION (ISPWC) and the latest supplements. The Contractor is required to have the current edition of the ISPWC standards to perform this work. Unless otherwise specified herein, all plan quantities are based upon in-place, completed and accepted units.

6. CONFLICTING PAVEMENT MARKINGS

All conflicting pavement markings shall be completely obliterated using an ACHD approved method prior to applying permanent pavement markings. The cost of performing all obliteration shall be considered incidental to other items and no separate pay item will be included for obliteration of pavement markings.

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7. CONNECTING PIPES

Connecting new pipes, manholes, irrigation structures\ditches and catch basins to existing pipes, manholes, irrigation structures\ditches and catch basins is incidental to other work and no additional compensation will be made.

8. CONSTRUCTION STAGING

The Contractor shall furnish ACHD with a detailed construction staging plan based on their anticipated approach to construction activities. This plan and implementation will be the responsibility of the contractor. Final approval of the staging plans and revisions thereof must be granted by ACHD prior to implementation.

Staging plans that may be contained within the project plans are primarily for bidding purposes only.

The contractor may utilize any staging plans contained within the bid documents as a basis for staging, but the final staging plan will be provided by the contractor prior to construction activities.

The cost associated with providing the necessary staging plans will be considered incidental to the project and no additional compensation will be made.

9. COORDINATE CONTROL

Coordinates for this project are based on the Ada County Projection. Refer to plans for ties to found monuments.

10. DAMAGED AREAS BEYOND SPECIFIED CONSTRUCTION LIMITS

Damage to any areas or items not specifically identified for removal, including the existing pavement, sod, sprinklers, and landscaping in the contract documents shall be promptly repaired by the contractor.

The cost to complete such repairs shall be considered incidental to the cost of the project and no additional compensation will be made.

All items within the temporary construction easements including, but not limited to, trees, bushes, utilities, sidewalks, pipes, driveways, planters, signs, sprinklers, lawns, etc. shall be retained and protected unless specifically noted otherwise on the plans.

11. EXCESS MATERIAL SITE

The Contractor shall be responsible for providing a site for the disposal of excess or unsuitable materials.

If bituminous material is to be disposed of, the site shall meet the requirements of the Idaho Department of Environmental Quality. All excess material sites shall be approved by ACHD. No separate payment will be made for the acquisition or operation of the sites, or for loading, hauling, or unloading the materials at the site.

12. INFORMATION GIVEN PRIOR TO AWARD

Oral explanations, instructions and interpretations given to bidders prior to award of contract will not be binding. It is ACHD’s intent to provide all bidders equal opportunity to access and acquire all available pertinent information necessary to formulate a responsive bid. Any information, specifications, plans, data, or interpretations that ACHD discovers is lacking and may be important to all bidders will be furnished in the form of an addenda, the receipt of which shall be acknowledged by the bidder.

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13. IRRIGATION FACILITIES

All irrigation improvements shall be constructed during the irrigation off-season, generally October 15th to March 15th. The Contractor shall meet all requirements stated in license agreements obtained from irrigation districts and/or irrigation users.

The project includes work affecting irrigation facilities owned by the Nampa-Meridian Irrigation District (NMID). The Contractor shall meet all construction requirements of the NMID License Agreement. All irrigation improvements shall be constructed during the irrigation off-season, within the work window approved in the NMID License Agreement.

Nampa-Meridian Irrigation District Contact:

Paul Huddlestun Asst. Water Superintendent

1503 1st Street South Nampa, Idaho 83651

Phone: 208-353-7555 Email: PHuddlestun@nmid.org Website: www.nmid.org

The Contractor is responsible for complying with all requirements outlined in the permit authorizations.

The Contractor shall contact ACHD if unable to find the authorized permits.

The Contractor shall protect all existing irrigation facilities not being replaced as part of the project. Any irrigation facilities, including pipes and structures, damaged during construction shall be replaced by the Contractor at the Contractor’s expense.

14. LIGHTING FOR NIGHT WORK

Lighting is required from one-half hour prior to sunset to one-half hour after sunrise at each work operation. Illumination of each flagging station and work area shall be maintained at minimum average horizontal luminance of 5 foot-candles for general activities. Tasks requiring high levels of precision and extreme care may require an average horizontal luminance of 20 foot candles.

Light towers shall be self-generating (gas or diesel) with fixtures using metal halide or high pressure lamps capable of producing required illumination from a minimum height of 30 feet. Illumination shall be optimized using the requirements of Section 6F.76 of the Manual on Uniform Traffic Control Devices.

Necessary lights or other devices shall provide a safe environment for all operations and personnel doing the work and inspection. The Contractor shall maintain on site one additional light plant as a backup. The backup light plant will be used to illuminate the flagging station when the flagging station is being moved to another location. All personnel working on this project shall wear reflectorized vests meeting current ANSI standards.

15. PAY QUANTITIES

By the 25th of each month the Contractor shall supply quantities that are to be paid for that month.

Each bid item shall be accompanied with the appropriate backup documentation on how the pay quantity was calculated. This shall include such documentation as, but not limited to; stationing, location, tallied weight tickets, sketch of calculated areas, and/or any other appropriate documentation to verify the pay quantity request. ACHD will verify quantities prior to remitting payment. Items failing mailto:PHuddlestun@nmid.org http://www.nmid.org/

Bid Documents (100%) Page 6 of 42 to have the appropriate backup supporting documentation will not be paid until the information is supplied. The cost associated with providing the above outlined documentation shall be considered incidental to the project and no additional compensation will be granted.

All Pay quantities shall also adhere to the criteria outlined in General Condition 41 – MANNER OF

PAYMENT.

16. POWER SUPPLY

If indicated on the plans or directed by ACHD, the contractor shall install a three-wire electrical service to be used at 120/240 volts, single phase, 60 hertz AC between the power supply and the service cabinet. The contractor shall install a junction box a maximum of two (2) feet from the power supply.

The distance from the power source to the service cabinet shall not exceed 300’ without approval from the ACHD Signal Coordinator. The contractor shall coordinate with Idaho Power for the power connection location. The District shall be responsible for all Idaho Power fees related to power supply and connection. The contractor shall have Idaho Power submit paperwork to the ACHD Utility Coordinator for the connection a minimum of sixty (60) working days prior to activating the new power supply. The contractor shall be responsible for all electrical permit fees.

17. PROJECT MAINTENANCE DURING CONSTRUCTION

The Contractor shall be responsible for project maintenance throughout the life of the contract. This responsibility includes, but is not limited to, blading, sweeping, proper and adequate drainage, access for emergency equipment, appropriate access for property owners, and dust control. All project maintenance activities shall also conform to requirements specified in any project permits. BMPs at the project site shall be the sole responsibility of the Contractor.

The Contractor shall be responsible for maintaining both on-site and off-site roadway facilities that are adversely affected by construction activities, including hauling. This maintenance may include, but is not limited to, street sweeping to eliminate tracking (within the project limits, adjacent streets, private driveways, and parking lots), and roadway repairs due to truck and equipment traffic. Required roadway facility maintenance shall be at the discretion of ACHD.

The Contractor shall provide a water truck and driver for dust abatement use at ACHD’s discretion.

Failure to adequately provide dust control shall be adequate cause for stopping work. The costs to provide dust control by other than the Contractor shall be deducted from the progress estimates.

The Contractor shall backfill trenches as soon as possible the same day the trench is excavated. Pipe and conduit crossings, manholes, and miscellaneous construction in existing roadways remaining open to traffic shall be constructed with temporary asphalt patches.

The cost of all project maintenance and roadway facility work, including temporary asphalt patches if needed, shall be considered incidental to item 2010.4.1.A.1, Mobilization.

18. PROPERTY OWNER COORDINATION

Contractor shall coordinate items of work affecting adjacent property owners, including but not limited to landscape removal and replacement, sprinklers, irrigation facilities, fencing, sod care, and trees.

Property access coordination shall be conducted according to General Condition 49 – PROPERTY ACCESS

POINTS.

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Construction activities on any School property may require background screenings for all construction workers, including subcontractors, expected to work on the School property. The Contractor should be prepared to submit the names of everyone expected to work on School grounds, and the Contractor should contact the School, two weeks in advance of any construction activities to allow those screenings to take place.

19. SHOP DRAWING REVIEW

Plans show details of all structures, lines, grades, typical cross sections of the roadway, location and design of all structures and a summary of items appearing on the proposal. The Contractor shall keep one set of plans available on the work site at all times.

The Contractor will supplement the plans by such working drawings necessary to adequately control the work. Working drawings shall be submitted to the Engineer for review in advance of the start of the proposed work. The Contractor shall allow sufficient Engineer review time and corrections resubmitted by the Contractor without impacting the approved construction schedule. The drawings shall be on sheets measuring 22 in. x 34 in. Unless otherwise stated in the contract, the Engineer will require up to 15 business days from the date the submittals or re-submittals are received until they are returned to the Contractor. No extension to contract time will be given due to re-submittals or the failure of the Contractor to provide any information necessary in a timely fashion. If necessary, drawings will be signed and sealed by a Professional Engineer licensed to practice in the State of Idaho.

This review time will increase if the drawings submitted do not meet the contract requirements or contain sufficient details.

For structures, six sets of working drawings shall be furnished and shall include stress sheets, shop drawings, erection plans, coffer dam plans, bending diagrams for reinforcing steel, or any other supplementary plans or similar data required of the Contractor. All structural drawings provided shall be sealed by a Professional Engineer licensed to practice in the State of Idaho.

Working drawings shall be approved before beginning the work covered by the submitted drawings.

Such approval is only for general conformance with the information given in the contract documents and does not relieve the Contractor of responsibility for correctness of the details and dimensions, nor does it waive any requirements of the specifications.

The contract price shall include the cost of furnishing all submitted shop and/or working drawings.

20. STORMWATER AND IRRIGATION FLOWS

The Contractor is responsible for transmitting existing stormwater and irrigation flows during construction. THE CONTRACTOR IS ADVISED THAT BYPASS PUMPING MAY BE REQUIRED DURING CONSTRUCTION TO MAINTAIN IRRIGATION AND STORMWATER FLOWS. All costs associated with transmitting existing flows, including flows from the temporary water quality best management practices on the project, shall be considered incidental to other items of work and no additional compensation will be made.

21. STORMWATER MANAGEMENT

Contractor shall implement Best Management Practices (BMPs) controls to protect storm sewer systems and Waters of the United States located on or near project limits. Contractor shall follow the requirements of the Idaho Pollutant Discharge Elimination System (IPDES) Construction General Permit

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(CGP) and/or ACHD’s Construction Site Discharge Control (CSDC) Program as required. The contractor is required to implement and maintain BMPs throughout the life of the contract. The removal of all temporary construction BMPs after completion of all required work to final stabilization is considered incidental to this project.

The ACHD CSDC Plan shall meet the CSDC Program requirements listed in Sections 8305 to 8306 of the ACHD Policy Manual:

https://www.achdidaho.org/Documents/ACHDpolicyManual/7000to9000/Section8300_ConstructionSit eDischargeControlProgram.pdf.

The CSDC Plan shall include measures to protect the existing ACHD storm drain systems inside and outside the project boundaries from mud, dust, debris, and other pollutants generated or transported due to this project. All measures will also be implemented to protect any “Waters of the United States” inside or outside of the project boundaries. “Pollutants” are defined in Section 8302 of the ACHD Policy Manual.

The IPDES CGP Stormwater Pollution Prevention Plan (SWPPP) shall meet the CGP requirements. The CGP can be found on the Idaho Department of Environmental Quality (IDEQ) website at:

https://www2.deq.idaho.gov/admin/LEIA/api/document/download/16509.

BMPs for controlling pollutant transport from the construction site and activities can be found in a number of publications and locations including, but not limited to:

• Idaho Department of Environmental Quality, Idaho Catalog of Storm Water Best Management Practices at: https://www.deq.idaho.gov/water-quality/wastewater/storm-water/ or Phone:

(208) 373-0502

• United States Environmental Protection Agency – Region 10, Resources and Tools at:

https://www.epa.gov/npdes/construction-general-permit-resources-tools-and-templates or Phone: (800) 424-4372

• Idaho Transportation Department, Best Management Practices (BMP) Manual at:

https://itd.idaho.gov/env/?target=resources or Phone: (208) 334-8476

Payment for this item will be made under the appropriate bid item numbers.

22. SUBGRADE

It shall be the Contractor’s responsibility to maintain the integrity for the exposed subgrade.

Degradation due to his operations or weather shall be remedied under the guidance of a geotechnical engineer.

All costs to maintain and repair, including geotechnical engineering, etc. shall be incidental to the project and no additional compensation will be made.

23. TACK COAT

Tack Coat is required between lifts of asphalt and between existing and overlayed lifts of asphalt. Tack Coat shall be CSS-1 Diluted Emulsified Asphalt with an application rate of 0.12 Gallons/SY. Tack Coat shall be incidental to other pay items and no additional payment made.

https://www.achdidaho.org/Documents/ACHDpolicyManual/7000to9000/Section8300_ConstructionSiteDischargeControlProgram.pdf https://www.achdidaho.org/Documents/ACHDpolicyManual/7000to9000/Section8300_ConstructionSiteDischargeControlProgram.pdf https://www2.deq.idaho.gov/admin/LEIA/api/document/download/16509 https://www.deq.idaho.gov/water-quality/wastewater/storm-water/ https://www.epa.gov/npdes/construction-general-permit-resources-tools-and-templates https://itd.idaho.gov/env/?target=resources

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24. TRAFFIC CONTROL

Contractor shall furnish ACHD with a detailed traffic control plan based on their anticipated approach to construction activities. This plan and implementation will be the responsibility of the contractor. Final approval of the traffic control plan and revisions thereof must be granted by ACHD prior to implementation. It will be the sole discretion of the ACHD Resident Engineer, or designated representative, to determine if the advanced construction signing plan contained in the contract documents shall be approved as a traffic control plan.

Traffic control plans and/or advanced construction signing plans that may be contained within the project plans are primarily for bidding purposes only. Standard Traffic Control Templates are available online: https://www.achdidaho.org/projects/development-resources/popular-forms.

Local and emergency vehicle access shall be maintained at all times, unless otherwise indicated in the contract documents. All traffic control items not specifically listed in the bid schedule shall be incidental to this contract, and no additional compensation will be made. Short term lane closures shall be only as approved by the Resident Engineer.

25. TRENCHING

All excavation and trenching shall meet OSHA requirements. Trenches shall be backfilled and properly compacted, closed at the end of each day, and barricaded, as needed.

The Contractor may be required to place temporary steel trench plates to accommodate traffic. All costs associated with providing and setting trench plates shall be considered incidental to other items of work and no separate payment will be made.

26. WARNING AND REGULATORY SIGNS

Existing warning and regulatory signing shall be retained and protected throughout the project limits unless otherwise noted. This may require multiple relocations, which will be incidental to other bid items. Existing warning and regulatory signs that are designated for removal and replacement and do not conflict with construction traffic control signs shall be maintained during construction and, if necessary, relocated to locations where the signs are visible to traffic and serve their original purpose.

27. WORKING HOURS

Unless otherwise specified here the Regular working hours for this contract shall adhere to the criteria outlined in General Condition 40 – WORK HOURS/TIME OF COMPLETION.

28. QUALITY CONTROL/QUALITY ASSURANCE

SECTION 100 – General Conditions

Add the following:

Ada County Highway District Quality Control and Quality Assurance Procedure

Definitions

Quality Assurance (QA) is defined as the process or set of processes used to measure and assure the quality of a product and/or workmanship. This encompasses ACHD’s oversight of the https://www.achdidaho.org/projects/development-resources/popular-forms

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Developer’s/Contractor’s processes and materials. This includes review of the inspector, sampler, tester and laboratory qualifications (per ACHD Independent Assurance Program defined below); verifying the results of the quality control and process control testing; and inspecting for conformance to plans and specifications.

Quality Control (QC) is defined as the actions necessary to produce quality workmanship and materials.

QC includes, but should not be limited to, inspection of the production and placement operations, quality control and process control testing and inspection of the finished product. QC is the responsibility of the Developer/Contractor. No separate payment will be made for this work. If quality control testing is not being performed at the required frequency, ACHD may stop production of work until the tests are supplied, or ACHD determines the work can proceed.

Quality Control Testing and Process Control Testing are defined as the testing and inspections conducted by the Developer/Contractor to determine if the construction materials have been produced and placed in compliance with the project specifications and applicable standards. Process control testing is conducted to demonstrate that the construction materials being produced and used continue to meet the requirements for the product.

Independent Assurance Program (IAP) is the process provided by ACHD, through trained and certified staff, to ensure that all testing is performed correctly, and testing equipment is functioning and calibrated properly.

Acceptance is determined by the QA test results, in combination with the assurance that the Developer/Contractor has satisfied the specification requirements for materials quality and workmanship, with the exception of Superpave Hot Mix, as specified below. In addition to the specified testing results, visual inspection of the end product is also taken into consideration in determining acceptance. Acceptance will be determined by ACHD. All samples required for QA testing will be supplied by the Developer/Contractor to ACHD. Prior to obtaining a sample for QA testing, ACHD shall be notified of when and where the sample will be taken from. ACHD will determine if it needs to witness the obtaining of the QA sample. Superpave Hot Mix acceptance shall be based on ACHD’s supplement to the ISPWC Section 814 under Part 4.2.

Construction Testing and Inspection Responsibilities

Quality Control

A. The Developer/Contractor shall be responsible for the Quality Control of all construction processes and materials quality. The Developer/Contractor will be responsible for quality throughout the construction process. Therefore, the Developer/Contractor must ensure that the materials and workmanship provided by themselves, Subcontractors, Suppliers, and Producers meet all pertinent specifications. All tests listed under Quality Control in the Minimum Testing Frequency Table are required for quality control, however only tests listed as Acceptance shall be used in determining pay.

B. The Quality Control laboratory must be approved by the Idaho Transportation Department. All testing personnel and facilities used by the Developer/Contractor must be currently certified by the Western Alliance for Quality Transportation Construction (WAQTC) and by the ACHD Independent Assurance Program. All test results must be supplied to ACHD the next working day after the test was performed. All Quality Control tests will be supplied to ACHD directly from the lab performing the tests. Tests results shall have the ACHD project/permit number listed and be sequential.

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C. Quality Control Testing must occur in a random frequency and at a minimum, at the intervals specified in the table provided in the corresponding ISPWC sections. The Developer/Contractor shall determine the random locations. Upon request, documentation must be supplied showing how the random numbers/locations were determined by the Developer/Contractor. All random sampling for ACHD will be done by the Developer/Contractor and witnessed by an ACHD representative.

D. For gradation testing by the Developer/Contractor during production, each sample size shall be taken per AASHTO T2, except the sample size shall be doubled. The sample obtained shall be split in accordance with AASHTO T248, and half of it shall be marked with an ID number and tested by the Developer/Contractor. The other half of the sample shall be sealed in a canvas sack or plastic bucket, and marked with the ID number, stored in a weather protected container, and reserved for use in retesting if needed. Material shall be retained until written notification is given by ACHD that it can be discarded.

E. Acceptance, gradation, binder content and volumetrics for plant mix pavement and/or Superpave Hot Mix asphalt shall be performed on the loose mix sampled from the roadway, haul unit, or an approved sampling method at the Hot Plant. At the start of each project the location for sampling shall be determined by ACHD and all samples for the project shall be obtained from that determined location. The hot mix sample used for asphalt binder content, gradation and volumetric testing shall be doubled in size. The sample shall be split in accordance with AASHTO R47 and half of the sample shall be used for the appropriate testing. The other half of the sample shall be sealed in a box, marked with the sample ID number, stored in a weather protected enclosure, and reserved for use in retesting if needed. Material shall be retained until written notification is given by ACHD that it can be discarded.

Quality Assurance

A. ACHD shall oversee the Developer’s/Contractor’s fulfillment of the QC requirements, and independently verify that the QC test results being submitted by the Developer/Contractor are representative of the workmanship and product quality. ACHD will also be responsible for determining general project acceptance based on conformance to the approved plan and specifications.

B. ACHD will perform random Quality Assurance testing at the intervals specified in Minimum Testing Frequency table.

C. Acceptance of material will be based on the Quality Assurance test performed by ACHD. If no QA test is performed, acceptance will be based on the QC tests results and inspections as determined by ACHD.

D. ACHD will perform random inspections of material storage and handling practices.

Dispute Resolution

A. The dispute resolution process is to resolve differences between the Developer/Contractor and ACHD when a disagreement regarding the test results occurs.

B. When a failing QA test occurs, production may be suspended until the differences are resolved and ACHD is satisfied.

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C. ACHD may run one or more tests of the split material from the QC process to help resolve differences.

D. When ACHD and the Developer/Contractor are unable to resolve the differences, a Third Party prequalified independent lab shall be brought in to verify testing.

E. ACHD will hire the Third Party independent lab. If ACHD tests are found to coincide with the independent lab, ACHD will not grant additional contract time due to any delays in production and the Developer/Contractor shall bear the costs associated with the Third Party resolution.

Likewise, if the Developers/Contractors tests are found to coincide with the independent lab, ACHD will bear the costs associated with Third Party resolution and will grant additional time for any delay caused by this additional testing.

F. For hot mix density dispute testing, cores shall be obtained by the Third Party from the same locations as the nuclear gauge tests.

Independent Assurance Program

A. ACHD practices the standards of the Western Alliance for Quality Transportation Construction

(WAQTC).

B. ACHD Independent Assurance personnel may observe testers and verify that the equipment and techniques used for the required testing are calibrated and performing accurately, per WAQTC.

During construction, it may be necessary for an IAP representative to verify the reliability of the tester by witnessing sampling and testing, and by splitting samples and comparing results.

C. All independent testing laboratories to be used shall be pre-qualified by ACHD prior to construction. To request an inspection and certification, contact the ACHD Lab Coordinator at 387-6310 to schedule. Laboratories that are currently certified by the Idaho Transportation Department (ITD) can provide ACHD with their current certification as confirmation of qualification. In the event that the lab is ITD certified, a facility inspection by ACHD IAP personnel may still be required.

Price Adjustment for Non- Compliant Materials or Products

A. When material fails to meet the required specifications, they will be subject to a price adjustment or rejection. ACHD may also request a lengthened warranty period.

B. ACHD will, in its sole discretion, determine the price adjustment or rejection.

C. The determined price adjustment or rejection of material shall be applied to the quantity of material that is represented by the non-compliant test results, as outlined in the Minimum Testing Frequency table.

Minimum Testing Requirements

A. The requirements outlined herein are the established minimum acceptance requirements for materials used in standard applications and paid for under standard bid items. For special provision items, material used in non-standard, non-roadway, temporary applications, or small quantities of materials, alternative materials acceptance requirements will be determined as discussed herein or as specified in the contract documents, or as otherwise approved by ACHD.

Material placed without appropriate testing shall be subject to a price deduction or rejected as determined by ACHD.

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B. Minimum testing frequencies are included in the Minimum Testing Frequency table. The Developer/Contractor frequencies may only be altered by Change Order approved by ACHD.

ACHD may elect to increase its own testing frequency at any time. Testing frequency should be increased when accepting material from newly developed sources or those with varying results.

C. Material source approval requirements are not listed in this document. All fill and aggregate material imported to the project must be obtained from ACHD or ITD approved materials sources.

D. Based on inspection and without regard for testing frequency, ACHD may isolate and reject obviously defective material.

E. When the material is not listed in the Minimum Testing Frequency table and not identified in the ISPWC, acceptance shall be determined by ACHD.

F. When the material is required by the Contract to meet a given specification, such as ASTM or AASHTO, acceptance of material will, at a minimum, require a manufacturer’s certification. A partial list of such material is outlined in the List of Miscellaneous Material Accepted on the Basis of Manufacturer’s Fabricator’s Certification.

Small Quantities

A. ACHD may accept small quantities of certain materials without sampling and testing. The determination to accept materials using this provision rest solely with ACHD.

B. The following are not eligible for small quantity acceptance:

i. Concrete with a specified strength of greater than 3000 psi.

ii. Paving on the roadway with quantities above 100 ton.

C. Materials may be accepted as a small quantity if the estimated quantity is less than the minimum QC testing frequency. The small quantity exception may be used on pavement items such as small patches, utility repairs, pavement placed outside the traveled way (driveways, approaches, mailbox turnouts, asphalt sidewalk and curb), and temporary pavement.

D. The minimum requirements that must be met for small quantities include approved sources, mix design, material certifications, inspection, and a core for density acceptance of mainline and intersection paving less than 100 tons.

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SPECIAL PROVISIONS

1. 201.4.1.C.1 – REMOVAL OF OBSTRUCTIONS

ON PAGE 3 OF SECTION 201 OF THE ISPWC, CLEARING AND GRUBBING AND REMOVAL OF

OBSTRUCTIONS, SUBSECTION 3.1.B.1, delete the entire subsection and replace with the following:

1. Clearing limits shall be the area from the edge of existing pavement to the limit of construction or to the limit of temporary/permanent easement (if applicable), or as directed by the engineer.

ON PAGE 5 OF SECTION 201 OF THE ISPWC, SUBSECTION 4.1.C, add the following:

• This item shall include all costs associated with clearing and grubbing.

• This item shall include all costs associated with the removal and disposal of trees less than 6” in diameter, stumps, fences, gates, rocks, foundations, concrete, sidewalk, curb, gutter, valley gutter, asphalt pavement, pipes and conduits, drainage and irrigation structures, landscaping features, old property corner monuments, and any other items required to be removed for which a separate pay item has not been made.

• All costs associated with backfilling voids created by the removal of pipes, observation wells, structures, trees, and other items shall be considered incidental and no separate payment will be made.

2. 202.4.1.A.1 – EXCAVATION (PLAN QUANTITY)

ON PAGE 14 OF SECTION 202 OF THE ISPWC, EXCAVATION AND EMBANKMENT, PART 4 –

MEASUREMENT AND PAYMENT, SUBSECTION 4.1, delete Subsection A and replace with the following:

A. Excavation: This item shall be paid for by the cubic yard on a plan quantity basis with no final measurement, for which the price and payment shall constitute full compensation for excavating, loading, hauling and disposing of excess excavated material and for loading, hauling, spreading, blending, shaping, drying, watering and compacting excavated material that is acceptable for the use as on-site borrow for embankment fill, and for all tools, labor and incidentals necessary to complete the work and all appurtenances not itemized on the Bid Schedule.

1. Bid Schedule Payment References: 202.4.1.A.1

2. Bid Schedule Description: Excavation (Plan Quantity)…cubic yard (CY).

3. 202.4.5.A.1 – UNSUITABLE MATERIAL EXCAVATION

ON PAGE 8 OF SECTION 202 OF THE ISPWC, EXCAVATION AND EMBANKMENT, SUBSECTION 3.7.C, delete the second sentence and add the following:

Unsuitable material shall be over-excavated a minimum of 12 inches below subgrade and backfilled with 8" minus uncrushed aggregate, compacted as specified herein.

ON PAGE 8 OF SECTION 202 OF THE ISPWC, EXCAVATION AND EMBANKMENT, SUBSECTION 3.7.D, add the following:

This item shall be utilized only as directed by the Engineer.

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ON PAGE 17 OF SECTION 202 OF THE ISPWC, EXCAVATION AND EMBANKMENT, SUBSECTION 4.5.A, add the following:

ITEM 29, “VARIATIONS IN QUANTITIES”, ON PAGE GC-16 OF THE ACHD GENERAL CONDITIONS, SECOND PARAGRAPH, shall not apply to the 202.4.5.A.1 bid item.

This item shall include all costs of backfilling using 8" minus uncrushed aggregate in accordance with Division 800.

4. 706.4.1.G.1 – CONCRETE REPAIR

ON PAGE 7 OF SECTION 706 OF THE ISPWC, OTHER CONCRETE CONSTRUCTION, PART 4.1.G, add the following:

This item includes all labor, equipment, and materials necessary to construct 6” thick concrete driveway repairs over 4” of ¾” minus crushed aggregate base material. All other concrete repair items will consist of 5” thick concrete over 4” of ¾” minus crushed aggregate base material.

The contractor shall limit any driveway closures to 3-days without prior approval from ACHD and the Property Owner.

Excavation, compaction, and ¾” minus gravel base material shall be considered incidental to this pay item.

5. 706.4.1.H.1 – PEDESTRIAN RAMP W/DETECTABLE WARNING DOMES

ON PAGE 1 OF SECTION 706 OF THE ISPWC, OTHER CONCRETE CONSTRUCTION, PART 1 – GENERAL, SUBSECTION 1.1 – SECTION INCLUDES, add the following:

C. Furnishing and installing tactile warning surface (TWS) units, in an in-line truncated dome pattern, to curb ramps at the locations shown in the Plans and according to ISPWC Standard Drawing SD-712.

ON PAGE 5 OF SECTION 706 OF THE ISPWC, OTHER CONCRETE CONSTRUCTION, PART 3 –

WORKMANSHIP, SUBSECTION 3.13 – STANDARD DETAILS, add the following:

B. Comply with ACHD Exhibit No. MUP-02 for Multi-Use Path Transition to On-Street Bike Lane (Detail A).

ON PAGE 7 OF SECTION 706 OF THE ISPWC, OTHER CONCRETE CONSTRUCTION, PART 1 – GENERAL, SUBSECTION 1.1 – SECTION INCLUDES, add the following:

This item shall include all costs associated with completion of the required concrete pedestrian ramps. All pedestrian ramps shall have a minimum four (4) foot wide throat, if not specified on the project plans. All pedestrian ramps shall include full-width prefabricated truncated domes as shown on the project plan sheets. Refer to ISPWC standard drawings SD-712* and ACHD Supplementals for additional details. All pedestrian ramps shall be constructed in full compliance with current requirements of the Americans with Disabilities Act (ADA) and the Public Right-Of-Way Accessibility Guidelines. Truncated domes and green paint for Bike Ramp are considered incidental to this bid item, and no additional compensation will be granted.

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Payment for this item will be made under:

706.4.1.H.1.A.A – Pedestrian Ramp w/ Detectable Warning Domes, Type SD-712A .... Per Each

706.4.1.H.1.D.C2 – Pedestrian Ramp w/ Detectable Warning Domes, Type SD-712D .. Per Each

706.4.1.H.1.G.G – Pedestrian Ramp w/ Detectable Warning Domes, Type SD-712G ... Per Each

706.4.1.H.1 – Pedestrian Ramp w/ Detectable Warning Domes, Type Bike Ramp, No Domes, (MUP-02) ..................................................................................................... Per Each

6. 802.4.1.A.1 – CRUSHED AGGREGATE FOR BASE - TYPE I (PLAN QUANTITY)

ON PAGE 7 OF SECTION 802 OF THE ISPWC, CRUSHED AGGREGATES, PART 4 – MEASUREMENT AND PAYMENT, SUBSECTION 4.1, delete Part A and replace with the following:

A. Crushed Aggregate for Base: By the cubic yard on a plan quantity basis with no final measurement, includes load, haul, and place.

1. Bid Schedule Payment References: 802.4.1.A.1.

2. Bid Schedule Description: Crushed Aggregate for Base – Type I (Plan Quantity)…cubic yard

(CY).

7. 1006.4.1.C.1 – INLET PROTECTION

ON PAGE 2 OF SECTION 1006 OF THE ISPWC, STORM DRAIN AND CHANNEL PROTECITON, PART 2 – MATERIALS, SECTION 2.1 – INCORPORATED BY REFERENCE, add the following:

B. The catch basin sediment traps shall be specifically designed to filter sediments and trash from storm water entering the storm drain systems. The devices shall be rated 500 gpm minimum and be manufactured by ENPAC (Storm Sentinel Adjustable Catch Basin Inlet), Ultra Tech International Inc. (Ultra DrainGuard Oil and Sediment Model), Bowhead Manufacturing Co.

(Streamguard Sediment Catch Basin Inserts) or approved equal.

ON PAGE 2 OF SECTION 1006 OF THE ISPWC, STORM DRAIN AND CHANNEL PROTECITON, PART 3 – WORKMANSHIP, SECTION 3.1 – INCORPORATED BY REFERENCE, add the following:

B. Each device shall be inspected and cleaned, as necessary, after each storm event. Each device shall be removed from the site after all overlay and other construction activities are complete.

8. 1103 – CONSTRUCTION TRAFFIC CONTROL

ON PAGE 6 OF SECTION 1103 OF THE ISPWC, CONSTRUCTION TRAFFIC CONTROL, PART 3 –

WORKMANSHIP, SUBSECTION 3.1 - GENERAL, add the following:

L. Temporary work zone traffic control (TC) equipment placed in public right-of-way under Ada County Highway District (ACHD) jurisdiction shall be placed in accordance with Section 6F.03 of the Manual on Uniform Traffic Control Devices (MUTCD) and as follows.

1. Ground mounted signs installed at the side of the road in rural areas shall be mounted at a height of at least 5 ft, measured from the bottom of the sign to the near edge of the pavement. In business, commercial, and residential districts where parking and / or bicycle or pedestrian movement is likely to occur, or where there are other obstructions to sign visibility, or where there are two or more through

Bid Documents (100%) Page 17 of 42 lanes in each direction, the distance between the bottom of the sign and the near edge of the traveled way shall be at least 7 ft.

2. Neither portable nor permanent sign supports or barrels should be located on sidewalks, bicycle facilities, or areas designated for pedestrian or bicycle traffic, unless required for construction activities, in which case suitable detours must be provided. Signs mounted lower than 7 ft should not project more than 4 inches into pedestrian facilities.

3. The height to the bottom of a secondary sign mounted below another sign may be 1 ft less than the appropriate height specified above.

4. All traffic control signs that will be left in place for longer than three (3) days shall be mounted on a wood or metal post set at least 30 into the ground or as directed by the Engineer. Temporary installations will be allowed for signs left in place less than three (3) days. All sign supports shall be crashworthy in accordance with NCHRP 350 standards. Exceptions to this are the following signs from the MUTCD: R9-8 through R9-11a (Pedestrian and Sidewalk series), R11 (Road Closed series), W1-6 through W1-8 (Horizontal Arrow series), M4-10 (Horizontal Detour Arrow), or other similar types of signs that are typically mounted on portable barricades.

5. Signs mounted on barricades and barricade / sign combinations shall be crashworthy.

6. Signs mounted on barricades…