B08_24R0011_Attachment_1_-_Statement_of_Work_-_TK_Jones_(Squaw_Lake)_Site_Road_and_Parking_Lot_Improvements.pdf

Standard Specifications for Construction

FP-14

TK Jones (Squaw Lake) Site Road and Parking Lot Improvements FY24

Yuma Field Office

Bureau of Land Management Arizona

TABLE OF CONTENTS

DIVISION 100 GENERAL REQUIREMENTS

Section 103. — SCOPE OF WORK

Section 106. — ACCEPTANCE OF WORK

DIVISION 150 PROJECT REQUIREMENTS

Section 151. — MOBILIZATION

Section 152. — CONSTRUCTION SURVEY AND STAKING

Section 154. — CONTRACTOR SAMPLING AND TESTING

Section 155. — SCHEDULES FOR CONSTRUCTION CONTRACTS

Section 156. — PUBLIC TRAFFIC

Section 158. — WATERING FOR DUST CONTROL

DIVISION 300 AGGREGATE AND BASE COURSES

Section 304. — FULL DEPTH RECLAMATION

DIVISION 400 ASPHALT PAVEMENTS AND SURFACE TREATMENTS

Section 406. — FOG SEAL

Section 407. — CHIP SEAL

Section 409.05(c). - SWEEPER………………………………………………………………...29 Section 414. — ASPHALT PAVEMENT CRACK SEALING AND FILLING

DIVISION 600 INCIDENTAL CONSTRUCTION

Section 634. — PERMANENT PAVEMENT MARKINGS

Section 635. — TEMPORARY TRAFFIC CONTROL

DIVISION 700 MATERIAL

Section 702. — ASPHALT MATERIAL

Section 703. — AGGREGATE

Section 712. — JOINT MATERIAL

Section 718. — TRAFFIC SIGNING AND MARKING MATERIAL

Section 725. — MISCELLANEOUS MATERIAL

DIVISION 100 GENERAL

REQUIREMENTS

Section 103. — SCOPE OF WORK

103.01 Intent of Contract. The precise details of performing the work are not prescribed, except as considered essential for the successful completion of the work. Furnish labor, material, equipment, tools, transportation, and supplies necessary to complete the work according to the contract.

Work Covered by Contract Documents

Project Identification: TK Jones (Squaw Lake) Recreation Site

Project Location:

Project is located approximately twenty-five miles North of Yuma, AZ. TK Jones (Squaw Lake) Recreation Site is located within the Imperial Dam Recreation Area and sits on the Colorado River near Imperial Dam (Lat: 32.902916, Long -114.477136). The site is managed under the Yuma Field Office and receives heavy visitation during October-May from out of state visitors, local recreating public, and waterpower sport enthusiasts accessing the Lower Colorado River. Therefore, work will need to be completed between June 1 - September 30.

Scope:

The Work consists of the following: This project includes road pavement rehabilitation of the entrance site road, parking lots, and boat ramp and day use access roads. The project consists of rehabilitation of approx.

31,000 sy of TK Jones Recreation Site. The pavement rehabilitation includes crack fill sealing of approx.

50,600 lf, asphalt paving using the application of a Type 2B double chip seal (1st layer penetrating asphalt chip, 2nd layer nominal asphalt chip) with uncoated chips, a final fog seal and all applicable markings for both roadways and parking lots. Roadway markings to include road edge, center lines and stop bars, all parking lot stall stripping and applicable parking lot marking. If patch work is needed because of the first chipseal layer failure, the patch work must be completed and approved by the COR or PI before starting second chipseal layer. In addition, there are (8)- 20’x 20’ plots and an approx. 3’x265’ strip within the parking lot area that consist of rock base material that will require scarifying to a minimum of 6-inches (See Section 304), and compaction and leveling to the existing parking lot grade. These plots shall also receive the double chip seal overlay.

Contractor to provide submittals for all products used. Contractor to clear and clean all brush, weeds, and other debris to ensure vegetation and debris does not mix with road pavement rehabilitation materials.

Oils to be used for double chip seal placement are CRS-2P penetration for first layer and CRS-2hP penetration for second layer.

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Section 106. — ACCEPTANCE OF WORK

106.01 Conformity with Contract Requirements. References to standard documents and test methods of AASHTO, ASTM, GSA, and other recognized standard authorities refer to the documents and methods in effect on the date of the Invitation for Bids (IFB) or Request for Proposal

(RFP).

Specification limits, tolerances, test results, and related calculations are according to ASTM E29, Absolute Method.

Perform work to the lines, grades, cross-sections, dimensions, and processes or material requirements shown in the contract.

Incorporate manufactured material into the work according to the manufacturer’s recommendations or to these specifications, whichever is more stringent.

When standard manufactured items are specified (such as fence, wire, plates, rolled shapes, and pipe conduits that are identified by gauge, density, or section dimensions), the identification will be considered to be nominal masses or dimensions. Unless specific contract tolerances are noted, established manufacturing tolerances will be accepted.

Plan dimensions and contract specification values are the values to be strived for and complied with as the design values from which deviations are allowed. Perform work and provide material that is uniform in character and reasonably close to the prescribed value or within the specified tolerance range. The purpose of a tolerance range is to accommodate occasional minor variations from the median zone that are unavoidable for practical reasons.

The Government may inspect, sample, or test work before final acceptance of the project. If the Government tests work, copies of test reports are furnished to the Contractor upon request.

Government tests may or may not be performed at the work site.

If Government testing is performed on work, the result will be used for acceptance purposes under Subsection 106.04.

Contractor shall not rely on availability of Government test results for process control.

The primary method of acceptance is specified in each Section of work, but work may be rejected if it is found noncompliant with the contract.

106.02 Visual Inspection. Acceptance is based on visual inspection of the work for compliance with the contract and prevailing industry standards.

106.03 Certification. For material manufactured off-site, a manufacturer with an effective testing and inspection system must be employed. Require the manufacturer to clearly mark the material or packaging with a unique product identification or specification standard.

When these Standard Specifications or Special Contract Requirements reference certifications, certificates or certified documents, equipment, or individuals, these references refer to documentation of non-regulatory, peripheral contract requirements required to be validated by an individual or organization having unique knowledge or qualifications to perform such validations.

Check certifications before incorporating the material into the work to ensure requirements of the contract have been met. Mark certifications with the following information:

• Project number and name.

• Pay item number and description.

• Contractor’s signature; and

• Date.

Material accepted by certification may be sampled and tested prior to application. If material is determined not to conform with the contract, the material will be rejected.

One of the following certifications is required:

(a) Production certification. Material requiring production certification is identified in the Acceptance Subsection of each Section. Submit production certification from the manufacturer for each shipment of material. Include the following:

(1) Date and place of manufacture.

(2) Lot number or other means of cross-referencing to the manufacturer’s inspection and testing system; and

(3) Substantiating evidence that the material conforms to the contract quality requirements as required, including the following:

(a) Test results on material from the same lot and documentation of the inspection and testing system.

(b) A statement from the manufacturer that the material complies with the contract; and

(c) Manufacturer’s signature or other means of demonstrating accountability for the certification.

(b) Commercial certification. Submit one commercial certification for similar material from the same manufacturer.

A commercial certification is a manufacturer’s or Contractor's representation that the material complies with contract requirements. The representation may be labels, catalog data, stamped specification standards, or supplier's certifications indicating the material is produced to a commercial standard or specification.

106.04 Measured or Tested Conformance. Perform necessary measurements and tests to ensure work complies with the contract.

Use prevailing industry standards in the absence of contract requirements or tolerances.

Submit measurements, tests, and supporting data for acceptance.

106.05 Inspection at the Plant. Work shall be inspected at the point of production or fabrication.

Manufacturing plants shall be inspected for compliance with specified manufacturing methods. Material samples shall be obtained for laboratory testing for compliance with quality requirements. Contractor shall allow full entry to parts of the plant producing the product.

106.06 Partial and Final Acceptance. Maintain work during construction and until the project is accepted. Repair damage caused by the Contractor prior to final acceptance of the entire project shall be replaced at no cost to the Government.

(a) Partial acceptance. When a segment of the project is completed, a final inspection of that segment shall be requested. If the segment is complete and in compliance, it shall be accepted, and the government may relieve the Contractor of further responsibility for maintaining accepted work.

When public traffic is accommodated through construction and begins using sections of roadway as they are completed, continue maintenance of such sections until final acceptance.

(b) Final acceptance. Notify the government when the entire project is complete to schedule an inspection. If work is determined to be complete, the inspection shall constitute the final inspection.

The Contractor shall be notified in writing of final acceptance as of the date of the final inspection.

Final acceptance shall relieve the Contractor of further responsibility for maintenance of the project.

If work is determined unsatisfactory, the government will provide to the Contractor a list of the work that is incomplete or requires correction. This work shall be completed or corrected immediately. Submit notification when the work has been completed as provided above.

DIVISION 150

PROJECT

REQUIREMENTS

Section 151. — MOBILIZATION

Description

151.01 This work consists of moving personnel, equipment, material, and incidentals to the project and performing work necessary before beginning work at the project site. This work also includes obtaining permits, insurance, and bonds.

Section 152. — CONSTRUCTION SURVEY AND STAKING

Description

152.01 This work consists of performing surveying, staking, calculating, and recording data for control of work.

Construction Requirements

152.02 Qualifications. Provide technically qualified survey crews for highway construction surveying and staking.

152.03 Submittals. Section Deleted

152.04 General. Conform to the following:

(a) Personnel. Provide a crew supervisor on the project whenever surveying and staking is in progress.

(b) Equipment. Furnish survey instruments and supporting equipment to achieve specified tolerances.

Construction equipment controlled with a Global Positioning System (GPS) and Robotic Total Station (RTS) machine guidance system may be used in the construction of subgrade, subbase, and base aggregate courses, or other construction operations if approved by the Government

(c) Material. Furnish tools and supplies suitable for highway survey work. Furnish stakes and hubs of sufficient length to provide a solid set in the ground with sufficient surface area above ground for necessary legible and durable markings.

Survey and stake to ensure roadway cross slopes of 2%-5% and ensure proper drainage is provided. All

8.1 miles of double chip seal are required.

Include staking activities in the construction schedule required under Section 155. Include dates and sequence of each staking activity.

Record survey and measurement field data in an approved format. Submit as-staked data and corrections made to the Government-furnished survey data. Submit survey and measurement data at least weekly. Field data and supporting documentation become the property of the Government upon completion of the work.

Discuss and coordinate the following with the government before surveying or staking:

(1) Surveying and staking methods.

(2) Stake marking.

(3) Grade control for courses of material.

(4) Referencing.

(5) Structure control.

(6) Field staking data.

(7) Localization of the GPS systems to the Government-established control points.

Acceptance of construction staking does not relieve the Contractor of responsibility for correcting errors discovered during the work and for bearing additional costs associated with the error.

Maintain legibility of stake markings for the duration of the project or until notified in writing the stakes are no longer required. Replace stakes if necessary to ensure markings are maintained.

Remove and dispose of flagging, paint, lath, stakes, and other staking material after the project is complete.

152.05 Survey and Staking Requirements. Perform survey, staking, recording of data, and calculations to construct the project from initial layout to final completion.

(a) Control points. Relocate initial horizontal and vertical control points in conflict with construction to areas that will not be disturbed by construction operations. Furnish coordinates, elevations, and supporting documentation for relocated points before the initial points are disturbed. Set durable monuments for survey control that uniquely identify the points.

Furnish the GPS localization results at least 7 days before beginning construction layout survey work. The Contractor shall provideGPS localization calibration and associated 3D model broken into two or more zones to maintain the localized relationship between control points and original ground.

(b) Centerline establishment. Establish or reestablish centerline at roadway design cross-section locations. Reestablish the centerline when construction survey and staking work does not meet tolerances.

(c) Original ground topographic verification; section deleted

. (d) Slope and references stakes. Perform the following:

(1) AMG method. Section deleted

(2) Conventional survey methods. Verify and set slope stakes on both sides of centerline at the theoretical catch point. If the theoretical catch point is not within a tolerance of 0.5 feet (150 millimeters), perform original ground topographic verification according to Subsection 152.05(c). Set the slope stake at the actual intersection of the design roadway slope with the natural ground-line. Set reference stakes outside the clearing limits. Include reference points and slope-stake information on reference stakes.

Establish slope stakes in the field as the actual point of intersection of the design roadway slope with the natural ground-line when theoretical catch point information is not available.

(e) Clearing and grubbing limits. Set clearing and grubbing limits on both sides of centerline based on the actual slope-stake locations.

(f) Grade-finishing stakes.

(1) AMG method. Section deleted

(2) Conventional survey methods. Set grade-finishing stakes for grade elevations and horizontal alignment on centerline and on each shoulder at design roadway cross-section locations. Set stakes at the top of subgrade and the top of each aggregate course. Reset grade finishing stakes as many times as necessary to construct the subgrade and each aggregate course.

During turnout or pullout construction, set stakes on the centerline, on each normal shoulder, and on the shoulder of the turnout. In parking areas, set stakes at the center and along edges of the parking area. Set stakes in ditches to be paved.

When the centerline curve radius is less than or equal to 250 feet (75 meters), use a maximum longitudinal spacing between stakes of 25 feet (8 meters). When the centerline curve radius is greater than 250 feet (75 meters), use a maximum longitudinal spacing between stakes of 50 feet (15 meters). Use a maximum transverse spacing between stakes of 20 feet (6 meters). Use brushes or guard stakes at each stake.

(l) Miscellaneous survey and staking. Survey and stake other work (such as guardrail, curb and gutter, turf establishment, utilities, and excavation limits for structures) to proper location and required tolerances. Propose staking increments for approval by the government when not specified.

Section 154. — CONTRACTOR SAMPLING AND TESTING

154.01 This work consists of obtaining samples for testing.

Contractor testing includes includes sampling, testing, and reporting required test results.

Construction Requirements

154.02 General.

Sample and test material according to Sampling, Testing, and Acceptance Requirements tables is included at the end of each Section. Perform additional sampling and testing when material does not meet requirements.

Provide the government the opportunity to witness sampling, splitting, and testing of material.

Where process control sampling and testing frequencies are identical to the sampling and testing frequencies for acceptance, the process control samples may be used for acceptance for the work.

154.03 Sampling. Sample and split samples according to AASHTO or other acceptable procedures.

Location of statistical acceptance sampling shall be provided using a random number system.

Perform splits when required and deliver the Government’s portion of the sample or split sample in an acceptable container suitable for shipment. Label samples with the following:

(a) Project number and name.

(b) Pay item number and description.

(c) Source of material.

(d) Sample number.

(e) Date sampled.

(f) Time sampled.

(g) Location sample taken.

(h) Name of person sampling.

(i) Name of person witnessing sampling; and

(j) Type of test required on sample.

154.04 Testing. Perform tests when there is a pay item for Contractor testing included in the bid schedule. Demonstration of testing competence may be required.

154.05 Records. When tests are on material incorporated in the work, report test results within 24 hours unless specified otherwise in the Sampling, Testing, and Acceptance Requirements tables. Report test results on forms containing sample information required by Subsection 154.03. Label interim measurements used to determine the results. Attach work sheets used to determine test values to the test result forms.

Section 155. — SCHEDULES FOR CONSTRUCTION CONTRACTS

155.01 This work consists of scheduling and monitoring the progress of construction activities.

155.02 Definitions.

(a) Construction schedule. A progress time-scaled logic diagram, tabular schedule, and submittal list.

(b) Preliminary construction schedule. Contractor shall provide a schedule diagram of contract activities for the first 60 days after the effective date issued in the Notice to Proceed. A schedule diagram consists of a Critical Path Method (CPM).

(c) Initial construction schedule. The first approved CPM construction schedule submitted after the preliminary construction schedule. Once approved the initial construction schedule becomes the first baseline construction schedule.

(d) Baseline construction schedule. The current approved initial construction schedule in which subsequent construction schedule updates are based on.

(e) Baseline construction schedule update. The normal monthly updating of the currently approved baseline schedule with no changes in the schedule logic or activities and no changes to the critical path.

(f) Baseline construction schedule revision. A significant change to the scheduleedlogic, schedule activities or activity durations, or some other modification to the schedule of planned work. Activities performed out of sequence from the baseline schedule affecting the critical path require a revision. A baseline schedule revision may show construction being completed at a date other than the contract completion date.

Construction Requirements

155.03 General.

Designate an individual in the Contractor's organization who will be the authorized representative responsible for the construction schedule. Identify the representative before or at the preconstruction conference.

When preparing schedules, show completion of work within the contract time.

155.04 Preliminary Construction Schedule. Do not begin work, except mobilization, and traffic control without an approved preliminary construction schedule.

Submit 2 copies of a preliminary construction schedule at least 7 days before the preconstruction conference. Within 7 days after the preconstruction conference, the preliminary construction schedule will be approved or rejected. If rejected, submit a revised schedule within 3 days.

The preconstruction conference will be rescheduled if the government does not receive the schedule 7 days before the scheduled preconstruction conference date. Contract time will not be extended for failure to submit a preliminary construction schedule by the date required.

155.05 Initial and Baseline Construction Schedule. Prepare and submit initial construction schedule unless otherwise required by the contract.

(a) Critical Path Method (CPM). Prepare an initial construction schedule using a CPM that is computer-generated. Submit an initial construction schedule that includes all activities, contractual requirements (such as construction or traffic staging), contract restrictions, and subcontract work.

(1) Format. Prepare a construction schedule diagram and supporting documents as follows:

(a) A title page or header block for each component (time-scaled logic diagram, tabular schedule, written narrative, and submittal list) with the contract number, project number, project name, Contractor name, current fixed completion date, date of submittal, and submittal number.

(b) A schedule diagram using the activity-on-arrow diagram method (ADM) or the precedence diagram method (PDM). Depict the order and interdependence of all activities and the sequence of the work that will be accomplished by the Contractor in coordination with its subcontractors. Show how the completion of predecessor activities restricts the start of successor activities.

(2) Time-scaled logic diagram.

(a) Show all activities including those in the preliminary construction schedule. Add items for correcting punch-list items, and general cleanup. Relate an activity or groups of activities to the contract pay items.

(b) Show all activity nodes or boxes, activity IDs, activity descriptions, and durations.

(c) Group the activities independently by area (that is separate distinct bridges or roadways) and by type of work (such as submittals, utilities, roadway, and bridge).

(d) Include a description of the work represented by each activity at or near the event node or box for each activity.

(e) Code each subcontractor’s activities so that its activities can be shown separately as well as cumulatively.

(f) Show durations for construction activities as whole working days, with a maximum duration of 30 working days each. Divide activities with longer durations into subgroups of activities not exceeding 30 working days in duration. Indicate logical start and end points (such as stationing and staging) for each subgroup.

(g) Show the durations of non-construction activities. Non-construction activities include mobilization, drawing and sample submittals by pay item number, and fabrication and delivery of key material. Non-construction activities may have durations exceeding 30 working days consistent with the contract. Indicate intended submittal dates and delivery dates for fabrication and delivery activities. Allow for review, approval, and distribution of each submittal or resubmittal. Where no times are specified, allow 14 days for the review, approval, and distribution of each submittal or resubmittal after receipt by the government.

(h) Indicate the total number of anticipated working days to complete each activity of work.

(i) Identify the critical path on the diagram; and

(j) Begin the construction schedule diagram with the date of the Notice to Proceed and include the contract completion date. Float time within the construction schedule is not for use or benefit of either party but is a jointly owned project resource available to both parties as needed to meet the completion date established in the contract.

(3) Submittal list.

(a) Submit a list of drawings and other submittals by pay item number required for the entire contract period.

(b) Include the following information for each submittal:

(1) Pay item number and description.

(2) Related activity ID number and description from the CPM.

(3) Planned date of initial submittal.

(4) Planned date of government initial response; and

(5) Other comments.

(b) Submission and approval Submit an electronic copy of the initial construction schedule within 14 days after the effective date of the Notice to Proceed has been issued. Submit an electronic copy via media approved by the government.

Allow 14 days for approval or rejection of the schedule. If rejected, submit corrected schedule within 7 days after the date of the rejection of the schedule. If rejected, schedule a meeting within 3 days to discuss corrections.

The approved copy of the initial construction schedule with supporting documents becomes baseline construction schedule. Implement and execute the work under the contract according to the baseline construction schedule. Update the baseline construction schedule according to Subsection 155.06.

Failure to include elements of work in the construction schedule diagram that are required for performance of the contract, even when approved by the Government, will not excuse the Contractor from completing the work required by the contract completion date.

155.06 Baseline Schedule Update. Submit a baseline construction schedule update no less than 7 days before the closing date for the progress estimate or every 30 days, whichever is less. Show completion of work within the contract time.

Unless previously approved by the government, changes to the construction schedule for work that is yet to be completed can only be changed with a Time Impact Analysis according to Subsection 108.03, and a Baseline Construction Schedule revision according to Subsection 155.08. Receipt of a baseline construction schedule update with negative float does not constitute agreement by the Government of the revised completion date.

(c) Critical Path Method updates. Submit an electronic copy of the construction schedule update.

Provide an electronic copy via media approved by the government.

(1) Tabular schedule:

(a) Actual finish dates for completed activities.

(b) Remaining duration required to complete each activity started, or scheduled to start, but not completed.

(c) Float remaining for each activity.

(d) Percentages for completed and partially completed activities; and

(e) Additional tabular schedules using different sort parameters when requested by the government.

(2) Updated time-scaled logic diagram.

(d) Review and approval of a construction schedule update. The government will review and approve the baseline construction schedule update within 7 days or return it for corrections. The approved baseline construction schedule revision will become the new baseline construction schedule.

155.07 Baseline Schedule Revision. Submit a time impact analysis when requesting approval of a baseline schedule revision. Submitting a proposed baseline schedule revision is not considered notification of delay or any basis for change. Submit monthly schedule updates according to Subsection

155.08 until a baseline construction schedule revision is approved.

(a) Bar Chart Method revisions. Submit a bar chart according to Subsection 155.05(a) which includes revised construction activities affected by impacts addressed with a time impact analysis.

Include a revised completion date for the total work.

(b) Critical Path Method revisions. Submit a tabular schedule and time-scaled logic diagram according to Subsection 155.05(b) which includes revised construction activities affected by impacts addressed with a time impact analysis. Include a revised critical path and completion date for the total work.

Section 156. — PUBLIC TRAFFIC

156.01 This work includes controlling and protecting public traffic adjacent to and within the project.

See FAR Clause 52.236-13 Accident Prevention.

Material

156.02 Conform to the following Section:

Temporary traffic control 635

Construction Requirements

156.03 Qualifications. Provide a traffic control supervisor certified by a state department of transportation, ATSSA, or other acceptable certification programs.

156.04 Accommodating Traffic During Work. Accommodate traffic according to the MUTCD, contract traffic control plan, Section 635, and this Section.

Perform work in a manner that ensures safety and convenience of the public and protects residents and property adjacent to the project. Accommodate public traffic on roads adjacent to and within the project until the project is accepted according to Subsection 106.07(b).

156.05 Maintaining Roadways During Work. Maintain roadways as follows:

(a) Construct and remove diversion roads and bridges as required by the traffic control plan.

(b) Maintain intersections with trails, roads, streets, businesses, parking lots, residences, garages, farms, and other features.

(c) Snow removal to facilitate the work is the Contractor’s responsibility. Snow removal to provide public access is the responsibility of the maintaining agency and will be performed at the maintaining agency’s discretion. Allow the maintaining agency access to perform snow removal.

(d) Maintain a dust-free traveled way such that visibility and air quality are not affected and a hazardous condition is not created.

(e) Remove accumulations of soil and other material from traveled way.

(f) Do not allow water to pond on the traveled way; and

(g) Maintain the roadway, detours, and diversions in a safe and acceptable condition.

If corrective action is requested and the corrective action is not taken immediately, the condition may be corrected, and the cost of the corrective action deducted from monies due the Contractor.

156.06 Maintaining Roadways During Non-Work Periods. Maintain roadways and traffic control for public traffic during periods when work is not in progress.

156.07 Limitations on Construction Operations. When the roadway is open to public traffic, restrict operations as follows:

(a) Operate equipment in the direction of traffic where practicable.

(b) For shoulder drop-offs of 3 inches (75 millimeters) or less, provide "Low Shoulder" warning signs.

For shoulder drop-offs more than 3 inches (75 millimeters), provide a 1V:3H fillet with "Shoulder Drop- Off" warning signs. Complete construction of shoulders adjacent to traffic lanes to the same elevation within 14 days.

(c) Provide minimum lane widths of 10 feet (3 meters). Use barricades, drums, or other acceptable devices to delineate traffic lanes through areas where the edge of pavement or intended path has been obliterated by construction operations.

(d) Locate staging areas at least 30 feet (9 meters) from the traveled way or behind acceptable traffic barriers. Obtain approval of the location and access to staging areas. Store unused traffic control devices at staging areas.

(e) Park equipment at least 30 feet (9 meters) from the traveled way or behind acceptable traffic barriers.

(f) Provide parking areas for contractor employees’ personal vehicles in approved areas.

(g) Provide uninterrupted two-way communications between flaggers and between flaggers and pilot cars unless flaggers can see each other and communicate. Use communications devices approved by the government. Citizen band radios are unacceptable. Communication devices shall be available to the government if necessary.

(h) Where switching traffic to a completed lane, provide adequate personnel and equipment to set or relocate traffic control devices.

(i) Limit construction-caused delays to public traffic to a maximum of 30 minutes per passage through the project; and

(j) Maintain existing guardrails, barriers, and bridge railings until removal is necessary for construction.

Use a temporary barrier or appropriate channelizing devices while the guardrails and bridge rails are absent. Install permanent barriers, guardrails, and bridge rails as soon as possible to minimize risk to the public.

156.08 Nighttime Operations. Perform construction operations during the hours of daylight (one-half hour after sunrise to one-half hour before sunset).

156.09 Traffic Control Supervisor. Provide a traffic control supervisor according to Subsection

156.03. The contractor shall not designate the superintendent as also the traffic control supervisor.

Furnish the traffic control supervisor's name, address, and 24-hour telephone numbers at the preconstruction conference. During the contract, including periods of suspensions and work stoppages, perform the following:

(a) Implement the traffic control plan.

(b) Coordinate traffic control operations, including those of subcontractors and suppliers.

(c) Ensure the condition, position, and applicability of traffic control devices in use.

(d) Immediately correct traffic control deficiencies.

(e) Coordinate traffic control maintenance operations with the government.

(f) Coordinate and ensure that traffic control devices are furnished, installed, maintained, removed, stored, replaced, relocated, and cleaned according to Subsection 635.04. Ensure unused traffic control devices are properly handled and stored.

(g) Conduct weekly traffic safety meetings for construction workers and invite the government to these weekly meetings.

(h) Submit a weekly certification that inspections and reviews were conducted and that traffic control devices meet contract requirements. Include number and types of devices in use. Report with the weekly certification, changes or corrective actions taken to ensure the safe passage of public traffic through the project.

(i) Inspect traffic control devices, including those in staging, storage, material sources, and disposal areas, as follows:

(1) Daily during daylight hours when daylight work is being performed.

(2) Daily during hours of darkness when nighttime work is being performed.

(3) Weekly during daylight hours and hours of darkness when work is suspended for periods of more than one week..

(4) Additional inspections, day, or night, as directed by the government; and

(5) Submit reports of inspections in an acceptable format within 2 days.

Section 158. — WATERING FOR DUST CONTROL

Description

158.01 This work consists of furnishing and applying water for the control of dust caused by the work and public travel.

Material

158.02 Conform to the following Subsection:

Water 725.01(c)

Construction Requirements

158.03 General. Provide an adequate water supply and apply water uniformly across the traveled way as necessary to control dust. Uniformly apply water using pressure-type distributors, pipelines equipped with spray systems, or hoses with nozzles.

(a) Project dust control for public benefit. Control dust within the construction limits as necessary including nights, weekends, and periods of non-work when the project is open to public traffic. When the project is not open to public traffic, control dust in areas of the project that have adjacent residences or businesses. Control dust on approved, active detours established for the project. Apply water at the locations, rates, and frequencies as ordered.

(b) Other dust control. Control dust on active haul roads, in pits and staging areas, and on the project during periods not covered in Subsection 158.03(a).

DIVISION 300

AGGREGATE AND BASE

COURSES

Section 304. — FULL DEPTH RECLAMATION

304.01 This work consists of scarifying the subgrade base material to a depth of 6-inches, mixing this material with water, and shaping and compacting the mix to produce a base.

Material

304.02 Conform to the following Subsections:

Crushed aggregate 703.06 Water 725.01(c)

Construction Requirements

304.03 General. Establish profile and cross slope of 2%-5%. Provide proper drainage on roadway. Before scarifying the subgrade base material, remove and dispose of unsuitable material. Protect manholes, valve covers, and other buried facilities from damage.

304.06 Mixing and Spreading. Add water as necessary to adjust the moisture content of the mixture to within 2 percent of the optimum for compaction. Mix to produce a homogenous full depth mixture. Spread mixture uniformly across the existing roadbed to provide a final compacted shape according to the established line, grade, and cross-section.

304.07 Compacting. Determine the maximum density of the mixture according to AASHTO T 180, Method D.

Compact each layer full width with approved tampers or compactors.

Compact each layer to at least 95.0 percent of maximum density. Determine in-place density and moisture content according to AASHTO T 310 or other approved test procedures.

Contractor shall engage third party testing agency to ensure compaction requirements have been met.

Submit testing agency reports to CO and COR

304.08 Surface Tolerance. If grade finishing stakes are required, finish the surface to within ±0.05 feet (±10 millimeters) from staked line and grade elevation.

If grade finishing stakes are not required, shape the surface to the required template and check the surface with a 10-foot (3-meter) straightedge. Defective areas are surface deviations more than ½ inch (13 millimeters) in 10 feet (3 meters) between two contacts of the straightedge with the surface.

Correct defective areas by loosening the material, adding, or removing material, reshaping, and compacting.

304.09 Maintenance. Overlay the base within 14 days after compacting.

DIVISION 400

ASPHALT PAVEMENTS AND

SURFACE TREATMENTS

Section 406. — FOG SEAL

Description

406.01 This work consists of applying an emulsified asphalt fog seal.

Emulsified asphalt is designated according to AASHTO M 140 or AASHTO M 208.

Material

406.02 Conform to the following Subsections:

Blotter 703.12 Emulsified asphalt 702.02 Water 725.01(c)

Construction Requirements

406.03 Equipment. Furnish an asphalt distributor with the following:

(a) Heater for uniformly heating the asphalt.

(b) Full circulation spray bar adjustable to 15-foot (4.5-meter) width.

(c) Positive controls including tachometer, pressure gauge, volume measuring device, or calibrated tank to uniformly deposit asphalt over the full width within 0.02 gallons per square yard (0.09 liters per square meter) of the required rate; and

(d) Thermometer for measuring asphalt temperature in the tank.

406.04 Surface Preparation.

(a) Clean the existing surface of loose material, dirt, and other deleterious material before placing the fog seal. Remove or protect raised pavement markers, pavement markings, reflectorized tape, and other material that interferes with the work. Protect service entrances (such as manholes, valve boxes, and drop inlets). Protect concrete work, rock walls, and other objects adjacent to the work.

(b) Dry the surface before placing the fog seal.

406.05 Weather Limitations. Apply fog seals only when the following apply:

(a) Ambient air temperature is above 50 °F (10 °C).

(b) Surface temperature is above 50 °F (10 °C).

(c) Weather is not foggy or rainy.

(d) Rain or temperatures below 40 °F (4 °C) are not anticipated for at least 24 hours after application.

(e) Sustained winds are less than or equal to 10 miles (16 kilometers) per hour; and

(f) Application is completed at least 2 hours before sunset.

406.06 Asphalt Application. Dilute the emulsion one part water to one-part emulsified asphalt.

Apply emulsion according to Subsection 407.09 at a rate of 0.10 to 0.15 gallons per square yard (0.4 to 0.7 liters per square meter) as approved by the government.

At locations where the fog seal cannot be applied with an asphalt distributor spray bar, apply fog seal uniformly using a hand spray attachment or by another approved method.

Allow the fog seal to cure undisturbed for at least 2 hours or until the emulsified asphalt breaks and is substantially tack free.

Cover unabsorbed asphalt with blotter to protect traffic or minimize rain damage. Remove excess blotter after the asphalt is absorbed. Dispose of material according to Subsection 203.05(a) and

406.07 Acceptance. See Table 406-1 for sampling, testing, and acceptance requirements.

Table 406-1 Sampling, Testing, and Acceptance Requirements

Material or Product

(Subsection)

Type of Acceptance (Subsection)

Characteristic Category Test Methods Specifications

Sampling Frequency

Point of Sampling

Split Sample

Reporting Time

Remarks

Production Emulsified asphalt (702.02)

Process control

(153.03)

Placement temperature

− − Minimum 1 per distributor truck

Distributor truck

No Before incorporating into work

Section 407. — CHIP SEAL

Description

407.01 This work consists of applying a single or double course chip seal.

Chip seal types are designated according to Tables 407-1 and 407-2.

Asphalt binder is designated according to AASHTO M 320 and emulsified asphalt is designated according to AASHTO M 140 or AASHTO M 208.

Material

407.02 Conform to the following Section and Subsections:

Asphalt binder 702.01 Blotter 703.12 Chip seal aggregate 703.09 Emulsified asphalt 702.02 Fog seal 406

Construction Requirements

407.03 Qualifications. Provide a superintendent and foreman for placing chip seals. Submit the following for approval at least 14 days before starting chip seal work:

(a) Names of personnel; and

407.04 Composition. Submit the following for approval at least 14 days before placement:

(a) Aggregate samples. 80 pounds (35 kilograms) from material produced for the project, gradation range represented, and proposed target value for each sieve size.

(b) Asphalt sample. 1-gallon (4-liter) sample with production certification conforming to Subsection 106.03(a).

(c) Spread rates. Pproposed spread rate for the asphalt and aggregate; and

(d) Density. Density of the aggregate according to AASHTO T 19, shoveling procedure.

407.05 Equipment.

(a) Asphalt distributor. See Subsection 406.03. Maintain two-way radio communication with the aggregate spreader.

(b) Sweeper. Furnish two sweepers conforming to Subsection 409.05(c).

409.05 (c) Sweeper.

(1) Self-propelled.

(2) Vertical broom pressure control; and

(3) Vacuum capability.

(c) Pneumatic-tire rollers.

(1) Three rollers each with a minimum compacting width of 5 feet (1.5 meters), or two rollers each with a minimum compacting width of 6.5 feet (2.0 meters); and

(2) Gross mass adjustable within the range of 200 to 360 pounds per inch (3.6 to 6.4 kilograms per millimeter) of compaction width.

(d) Aggregate spreader. Controls to uniformly deposit aggregate over the full asphalt width.

407.06 Surface Preparation. See Subsection 406.04(a). Prepare the surface as follows:

(a) Newly asphalt patched areas. Fog seal according to Section 406.

(b) Existing asphalt surfaces including recycled asphalt pavements. Dry the surface.

(c) Aggregate base course surfaces.

(1) When using an emulsified asphalt, make the surface damp; or

(2) When using an asphalt binder, dry the surface.

407.07 Weather Limitations. Apply chip seals only when the following apply:

(a) Ambient air temperature is above 65 °F (18 °C).

(b) Surface temperature in the shade is above 60 °F (16 °C).

(c) Surface temperature in the sun is below 150 °F (66 °C).

(d) Weather is not foggy or rainy.

(e) Rain or temperatures below 40 °F (4 °C) are not anticipated for at least 24 hours after application.

(f) Sustained winds are less than or equal to 10 miles (16 kilometers) per hour; and

(g) Application is completed at least 2 hours before sunset.

407.08 Production Start-Up Procedures.

On the first day of each chip seal layer placement, construct up to three 200- to 500-foot (60- to 150-meter) control strips that are one-lane wide according to Subsections 407.09 and 407.10. Coordinate control strip locations with the government. Start first control strip at proposed application rates. Vary asphalt material or surface aggregate application rate for each control strip. Construct control strip using material, lay-down procedures, and compaction procedures intended for the entire project.

Repeat the control strip process until an acceptable control strip is produced. Cease production until the material and the control strip are evaluated and accepted. The government shall indicate which strip will serve as the approved project control strip.

Acceptable control strips may remain in place and shall be accepted as a part of the completed project.

Correct unacceptable control strips.

Use these start-up procedures when changing construction procedures, when resuming production after a termination of production due to unsatisfactory quality according to Subsection 106.04.

407.09 Asphalt Application. Calibrate asphalt distributors before the start of project and when directed by the government. Calibrate the spray bar height, check nozzle angle, and verify longitudinal and transverse application rates according to ASTM D2995.

Spread building paper on the pavement surface at the beginning and end of each asphalt application so distributor flow is started and stopped on the paper.

Apply asphalt uniformly at the optimum application rate determined from the control strip. Do not apply more asphalt than can immediately be covered with aggregate. Correct skipped areas or deficiencies.

At the end of each day’s production, provide the government with documentation of calibrations and application rates.

407.10 Aggregate Application. When emulsified asphalt is used, verify the aggregate stockpile moisture daily and use moist surfaced aggregate.

Calibrate aggregate spreaders before the start of project and as directed by the government. Calibrate the longitudinal and transverse spread rates.

Apply aggregate uniformly at the optimum application rate determined from the approved control strip. Apply the aggregate immediately after the asphalt material is applied. Operate the aggregate spreader to ensure asphalt is covered with the aggregate before wheels pass over it. For part-width construction, leave an uncovered 6-inch (150-millimeter) wide asphalt strip to permit an overlap of asphalt material.

Cover excess asphalt with blotter to protect traffic.

Correct excesses and deficiencies by adding or removing aggregate to achieve a uniform texture before the asphalt cures.

Operate rollers at a maximum speed of 5 miles (8 kilometers) per hour. Do not allow the aggregate to be displaced by pickup or sticking of material to the tire surface. Roll the surface to bond aggregate uniformly and thoroughly over the full width. Complete rolling within 1 hour after asphalt is applied to the surface. Perform three passes with rollers. Do not allow traffic to travel over aggregate until rolling is completed.

At the end of each day’s production, provide the government with documentation for calibrations and application rates.

Use a pilot car according to Section 635 to limit traffic speeds to 10 miles (15 kilometers) per hour during the first 45 minutes after rolling and to 20 miles (30 kilometers) per hour for the next 24 hours.

Sweep the surface when the air temperature is below 90 °F (32 °C). Do not displace embedded material.

Complete vacuum sweeping by the morning after construction. Dispose of material according to local laws.

407.11 Placing and Finishing. Apply asphalt and aggregate according to Subsections 407.09 and 407.10 and Table 407-1. The application rates in these tables are for estimating purposes only. Contractor shall determine exact rates based on approved control strips.

Table 407-1 Approximate Quantities of Material for Single Course Chip Seal

Type Nominal Maximum

Size of Aggregate

Aggregate Gradation (1)

Estimated Quantity of Aggregate (2) pounds/yd2

(kilograms/m2)

Estimated Quantity of Asphalt Binder gallons/yd2 (liters/m2)

Estimated Quantity of Emulsified

Asphalt gallons/yd2 (liters/m2)

1A ¾ inch (19 mm) A 44 – 53

(24 – 29)

0.31 – 0.42

(1.41 – 1.91)

0.48 – 0.65

(2.17 – 2.94)

1B ½ inch (12.5 mm) B 29 – 33

(16 – 18)

0.25 – 0.34

(1.15 – 1.56)

0.39 – 0.53

(1.77 – 2.40)

1C ⅜ inch (9.5 mm) C 24 – 28

(13 – 15)

0.18 – 0.28

(0.79 – 1.27)

0.27 – 0.43

(1.22 – 1.95)

1D No. 4 (4.75 mm) D 18 – 24

(10 – 13)

0.14 – 0.19

(0.65 – 0.85)

0.27 – 0.43

(1.22 – 1.95)

(1) See Table 703-7 for aggregate gradations.

(2) Aggregate masses are for aggregates having a bulk specific gravity of 2.65, as determined by AASHTO T 84 and AASHTO T 85. Make proportionate corrections when aggregate furnished has a bulk specific gravity above

2.75 or below 2.55.

407.12 Double Course Chip Seal. Apply each asphalt and aggregate layer according to Subsections

407.09 and 407.10 and Table 407-2. Table 407-2 application rates are for estimating purposes only.

Determine the exact rates based on approved control strips.

When using emulsified asphalt, wait at least 24 hours between applications. When using asphalt binder, no wait is required between applications. Lightly vacuum sweep the first layer to remove loose material.

Table 407-2 Approximate Quantities of Material for Double Course Chip Seal

Type (Thickness)

Nominal Maximum

Size of Aggregate

Aggregate Gradation (1)

Estimated Quantity of Aggregate (2) pounds/yd2

(kilograms/m2)

Estimated Quantity of

Asphalt Binder gallons/yd2 (liters/m2)

Estimated Quantity of Emulsified

Asphalt gallons/yd2 (liters/m2)

2A (⅞ inch (22 mm))

1st Application ¾ inch (19 mm) A 44 – 53

(24 – 29)

0.29 – 0.41

(1.31 – 1.86)

0.43 – 0.60

(1.95 – 2.72)

2nd Application ⅜ inch (9.5 mm) C 24 – 29

(13 – 16)

0.41 – 0.46

(1.86 – 2.08)

0.60 – 0.70

(2.72 – 3.17) 2B (¾ inch (19 mm))

1st Application ½ inch (12.5 mm) B 33 – 44

(18 – 24)

0.27 – 0.31

(1.22 – 1.40)

0.39 – 0.48

(1.77 – 2.17)

2nd Application ⅜ inch (9.5 mm) C 22 – 26

(12 – 14)

0.29 – 0.38

(1.31 – 1.72)

0.45 – 0.58

(2.04 – 2.63) 2C (½ inch (12.5 mm))

1st Application ⅜ inch (9.5 mm) C 29 – 39

(16 – 21)

0.17 – 0.27

(0.77 – 1.22)

0.27 – 0.39

(1.22 – 1.77)

2nd Application No. 4 (4.75 mm) D 13 – 18

(7 – 10)

0.27 – 0.31

(1.22 – 1.40)

0.39 – 0.48

(1.77 – 2.17)

(1) See Table…