Attachment_1_-_Specifications.pdf

MOUNT RAINIER NATIONAL PARK

MORA PMIS No. 158098

REPAIR VISITOR SAFETY DEFICIENCIES

OF THE NISQUALLY VISTA, DEADHORSE,

AND AVALANCHE LILY TRAILS

100% FINAL CONSTRUCTION DOCUMENTS

CONTRACTOR SPECIFICATIONS

NATIONAL PARK SERVICE

PACIFIC WEST REGION

MAY 2017

MORA – 158098

TABLE OF CONTENTS

TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS NO. OF PAGES

01 11 00 Summary of Work 01 11 40 Work Restrictions 01 27 00 Definition of Contract Price Items 01 31 00 Project Management & Coordination 01 33 23 Submittal Procedures 01 35 23 Safety Requirements 01 50 00 Temporary Facilities & Controls 01 73 40 Execution 01 74 19 Construction Waste Management & Disposal 01 77 00 Closeout Procedures

DIVISION 31 – EARTHWORK

31 05 16 Aggregate Base Course 31 23 33.10 Restoration of Surfaces 31 25 00 Soil Erosion & Sediment Control

DIVISION 32 – EXTERIOR IMPROVEMENTS

32 12 16 Asphalt Concrete Paving

DIVISION 01

GENERAL REQUIREMENTS

SECTION 01 11 00

SUMMARY OF WORK

PART 1 – GENERAL

1.1 WORK COVERED BY CONTRACT DOCUMENTS

Project Location: This project is located in Mount Rainier National Park on the south facing slope of the mountain in Paradise, approximately twenty five (25) miles east-northeast of Ashford, WA on State Route 706. The project area encompasses the area from the trail head located near the parking area west of Henry M. Jackson Visitor Center along the Nisqually Vista, Deadhorse Creek, and Avalanche Lily Trails.

A. The Work consists of the following:

1. The Work includes placement of new asphalt concrete paving over areas where asphalt concrete pavement was removed from the trail due to deterioration.

2. New asphalt concrete pavement will be placed on compacted base material installed by the Park.

3. New asphalt concrete pavement will be placed as a overlay on existing asphalt.

4. All overlays will be a minimum of 2 inches.

1.2 GOVERNMENT-FURNISHED MATERIALS

A. Government-Furnished Products:

1. Government is to furnish finished graded compacted surface ready to receive new Asphalt Concrete pavement.

2. Government is to furnish asphalt surface prepared for overlay.

1.3 CONTRACTOR USE OF SITE

A. General: Contractor shall have full use of the trails within construction boundaries for construction operations during the construction period. Contractor's use of the trails within construction boundaries is limited only by the Government's right to perform work or to retain other contractors on portions of Project.

B. Storage of Materials: Confine storage of materials to areas as determined by the Contracting

Officer.

C. Preservation of Natural Features:

1. Prevent damage to natural surroundings. Restore damaged areas, repairing or replacing damaged trees and plants, at no additional expense to the Government.

2. Provide temporary barriers to protect existing trees and plants and root zones.

3. Do not remove, injure, or destroy trees or other plants without prior approval. Consult with Contracting Officer and remove agreed-on roots and branches that interfere with construction.

4. Do not fasten ropes, cables, or guys to existing trees.

5. Carefully supervise excavating, grading, filling, and other construction operations near trees to prevent damage.

D. Driveways and Entrances: Keep driveways, pathways, trails and entrances serving premises clear and available to Government, Government's employees, and emergency vehicles at all times. Do not use these areas for parking or storage of materials.

1. Schedule deliveries to minimize use of driveways and entrances.

2. Schedule deliveries to minimize space and time requirements for storage of materials and equipment on-site.

E. Construction Camp: Establishment of a camp within the park will not be permitted.

F. Hauling Restrictions: Comply with all legal load restrictions in the hauling of materials. Load restrictions on park roads are identical to the state load restrictions with such additional regulations as may be imposed by the Park Superintendent. Information regarding rules and regulations for vehicular traffic on park roads may be obtained from the Office of the Park Superintendent. A special permit will not relieve Contractor of liability for damage which may result from moving of equipment. There two possible routes to the Paradise area. The first is to enter the park at Nisqually Entrance. Paradise is approximately 18 miles from Nisqually Entrance. Road construction will be in progress from Longmire, at mile post 6, to Paradise and 30 minutes delays can be expected through the project. The park’s east entrance onto Stevens Canyon Road is 21 miles to Paradise. This entrance can be accessed from State Highway 410 and 123 from Enumclaw, WA or Highway 12 and 123 from Packwood, WA. This route ties into the Nisqually Entrance to Paradise road 2 miles away from Paradise.

1.4 WORK RESTRICTIONS

A. On-Site Work Hours: Work shall be generally performed during normal business working hours of seven a.m. to five p.m. (7:00 AM - 5:00 PM), Monday through Friday, except when otherwise indicated.

1. Weekend Hours: Per Contracting Officer’s direction.

2. Early Morning Hours: Per Contracting Officer’s direction.

3. Road work between Longmire and Paradise will be in progress, there may be time restrictions on the route to Paradise.

4. No work will occur on Federal Holidays.

END OF SECTION

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WORK RESTRICTIONS

SECTION 01 11 40

1.1 PARK REGULATIONS

A. The Contractor must comply with the following rules and conditions:

1. Ensure personnel (contractors or subcontractors) working in the park become familiar with and obey all park regulations, wear hard hats in designated areas, and do not enter any restricted areas unless required to do so and until cleared for such entry.

2. Ensure equipment is conspicuously marked for identification.

3. The Contractor shall restrict employees / representatives to the work site and control travel directly to and from the work site.

4. Restore all traffic / parking / security signs and markings, including space numbers, designations, and lines, to their original form if such signs / markings are defaced or deleted during construction/repair.

5. Control and security of Contractor-owned equipment and materials at the work site. Report immediately missing / lost / stolen property to the park dispatch / law enforcement rangers at 360-569-6600.

6. Vehicles associated with the Contractor shall be waived the entrance fee upon entering in a marked company vehicle or by providing the names of employees entering in personal vehicle(s). Please note that the entrance fee is waived only for the purpose of reporting directly to a specific work location. Any deviation for recreational purposes is subject to payment of required entrance fees.

a. Contractor will provide the Contracting Officer with a listing of its subcontractors and their associated vehicles and employees entering the park on a daily basis.

b. Contractor will provide the Contracting Officer with a listing of anticipated deliveries for each week.

7. Vehicles / Heavy Equipment:

a. Rules of the Road: All vehicles and heavy equipment will comply with posted traffic regulations, including speed limits and double-yellow center lane markings. Vehicles and heavy equipment shall take every safe opportunity to use paved roadside pullouts in order to allow faster moving traffic to pass. Failure to comply with traffic regulations will result in a citation being issued to the driver.

b. Vehicle Parking: Vehicles are not permitted within long-term or overnight parking along park roads or in associated overlooks / pullouts. Vehicles and heavy equipment will be permitted at designated parking areas only.

c. Vehicle Exhaust: All vehicles will be properly maintained to insure that the exhaust produced is within legal limits. Effects of excessive vehicle exhaust may be subject to enforcement of State and Federal laws regarding emissions as well as those regarding threatened and endangered species.

d. Spills: Contractor shall be responsible for any cleanup efforts required in accordance with 40 CFR and all applicable state environmental quality laws regarding disposal and cleanup of hazardous / industrial wastes. Contractor must immediately notify the Contracting Officer of spills.

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e. Commercial Vehicle Safety Inspections: The Contractor, employees, contractors, and subcontractors shall fully cooperate regarding safety inspections of commercial vehicles within the Park. Commercial vehicle safety inspections are conducted unannounced for employee and visitor safety. Vehicles are checked for safety and mechanical deficiencies and for compliance with current state and federal laws and regulations. Driver licenses and medical certificates are also checked.

f. DOT Compliance: All vehicles are to be compliant with all DOT requirements including but not limited to driver with appropriate license class, medical examiner card as appropriate with license class, carrying three (3) triangles or three (3) flares, mounted fire extinguisher, and valid DOT safety sticker.

g. Oversized Vehicles: Oversized vehicles are defined as vehicles where the width of the vehicle or load exceeds one lane (i.e., beyond the center line of the paved road).

Oversized vehicles must not exceed the clearances along the Park road corridor.

Oversized vehicles will require an escort and drivers must avoid driving on the edges of the Park road. The Contractor is to notify the Contracting Officer of oversized vehicles, scheduled dates and estimated arrival times at the park entrance, and the identity of who is escorting the vehicle (e.g., police, contractor, etc.). Vehicles that are oversized are requested to enter the Park AFTER 2:00 p.m. and exit the Park BEFORE sunset.

i. Law Enforcement: Law enforcement rangers will intervene if they perceive any unsafe or unlawful activity. Contractor must immediately comply with any instructions issued by a park law enforcement ranger.

j. Road & Weight Restrictions: All vehicle load, weight and size limitations, as established by State law, apply to vehicles operated on the Park road (36 CFR § 4.11).

No loads heavier than the current load rating for the historic Park bridge will be permitted.

8. Emergency Medical and Accident Reporting

a. The Contractor or subcontractor shall contact Park Dispatch for any medical emergency or traffic accident occurring within the Park.

Emergency number: Dial 911 as needed.

Park Dispatch: 360-569-6600

Park Dispatch is called so that the entrance station will be prepared should any emergency vehicles (e.g. ambulance) need to enter the Park and so that any available Emergency Medical Services personnel in the Park might respond until such time as the ambulance arrives.

b. The Contractor or subcontractor is required to report ANY personal injury and / or property damage incident occurring within the park. This report must be made to a Law Enforcement Ranger at the first available opportunity before leaving the park:

Park Dispatch: 360-569-6600

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DEFINITION OF CONTRACT PRICE ITEMS

SECTION 01 27 00

DEFINITION OF CONTRACT PRICE ITEMS

1.1 LIST OF CONTRACT LINE ITEMS

A. Contract Price Item No.1 – Nisqually Vista Trail

1. This price item consists of all Division 01 requirements, mobilization and demobilization, the installation of AC Pavement with minimum thickness of two (2) inches over trails within the Park. Specifically: Nisqually Vista Trail from station 25+00 to station 31+50. Pavement over the areas where culvert repair / bridge installation is to take place. The Park has prepared the trails such that the trails are ready to receive AC pavement. Trail preparation included placement of base and sub-base compacted to achieve a competent surface for AC pavement or asphalt surface sweeping where an asphalt overlay will be used.

2. No separate measurement will be made.

3. Payment will be made at the contract unit price.

B. Contract Price Item No. 2 – Deadhorse Creek Trail inches over trails within the Park. Specifically: Deadhorse Creek Trail from station 01+00 to station 8+50. Pavement over the areas where culvert repair / bridge installation is to take place. The Park has prepared the trails such that the trails are ready to receive AC pavement. Trail preparation included placement of base and sub-base compacted to achieve a competent surface for AC pavement or asphalt surface sweeping where an asphalt overlay will be used.

C. Contract Price Item No 3 – Avalanche Lily Trail inches over trails within the Park. Specifically: Avalanche Lily Trail from station 70+00 to station 74+50. Pavement over the areas where culvert repair / bridge installation is to take place. The Park has prepared the trails such that the trails are ready to receive AC pavement. Trail preparation included placement of base and sub-base compacted to achieve a competent surface for AC pavement or asphalt surface sweeping where an asphalt overlay will be used.

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PROJECT MANAGEMENT & COORDINATION

SECTION 01 31 00

1.1 SUBMITTALS

A. Division 01 documents: The following items shall be submitted a minimum of one week prior to the Preconstruction Conference. Contracting Officer will notify Contractor of tentative date for the Pre-Construction Conference.

1. Letter designating Project Superintendent.

2. Construction Schedule.

3. A comprehensive breakdown of the Schedule of Values.

4. Accident Prevention Plan.

5. A list of Subcontractors for this project.

6. Written statements from subcontractors certifying compliance with applicable labor standard clauses.

7. Satisfactory evidence of liability insurance coverage and workman’s compensation for the

Contactor and all subcontractors.

B. All items listed must be provided to the Contracting Officer before the Pre-Construction Conference is held. If all of these documents have not been received one week prior to the scheduled Pre-Construction Conference date, the conference will be cancelled, Notice to Proceed will not be issued, and the Contracting Officer will consider other contractual remedies. Work shall not commence until written Notice to Proceed has been issued

1.2 REQUESTS FOR INFORMATION (RFIs)

A. General: Immediately on discovery of the need for additional information or interpretation of the Contract Documents, Contractor shall prepare and submit an RFI utilizing the form designated by the Contracting officer.

1. Contracting Officer will not respond to RFIs submitted by other entities controlled by

Contractor.

2. Coordinate and submit RFIs in a prompt manner to avoid delays in the work.

B. Content of the RFI: Include a detailed, legible description of item needing information or interpretation and the following:

1. RFI number, numbered sequentially.

2. Date.

3. RFI subject.

4. Specification Section number and title and related paragraphs, as appropriate.

5. Drawing number and detail references, as appropriate.

6. Contractor's suggested resolution. If Contractor's suggested resolution impacts the

Contract Time or the Contract Sum, Contractor shall state impact in the RFI.

7. Contractor’s signature.

8. Requested date for response.

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9. Attachments: Include sketches, descriptions, measurements, photos, Product Data, Shop Drawings, coordination drawings, and other information necessary to fully describe items needing interpretation.

a. Include dimensions, thicknesses, and details of affected materials, assemblies, and attachments on attached sketches.

C. Contracting Officer’s Action: Contracting Officer will review each RFI, determine action required, and respond. Contracting Officer will determine the critical nature of each RFI and issue a response accordingly.

1. The following are not considered to be RFIs and will receive no action:

a. Requests for approval of submittals.

b. Requests for approval of substitutions.

c. Requests for approval of Contractor's means and methods.

d. Requests for coordination information already indicated in the Contract Documents.

e. Requests for adjustments in the Contract Time or the Contract Sum.

f. Requests for interpretation of Architect's actions on submittals.

g. Incomplete RFIs or inaccurately prepared RFIs.

2. Contracting Officer's action may include a request for additional information, in which case time for response will date from time of receipt of additional information.

3. Contracting Officer's action on RFIs may result in the need for a change to the Contract Time or the Contract Sum. All contract changes will be processed following the terms and conditions of the contract.

MORA – 158098 01 31 00 - 4

Project:

Contract No.: Date:

To: Jim Ziolkowski, COR cc: Pam Griffin, CO

From:

Subject:

Please provide the following information or clarification:

Response required by ___\____\____

Date:

To:

From: Jim Ziolkowski, COR

Subject:

REQUEST FOR INFORMATION #

MORA – 158098 01 35 23 - 5

SAFETY REQUIREMENTS

SECTION 01 35 23

PART 1 - GENERAL

1.1 SUMMARY

A. This section includes establishing an effective accident prevention program and providing a safe environment for all personnel and visitors.

1.2 SUBMITTALS

A. Accident Prevention Plan: After contract award and before the Pre-Construction conference, submit for review, an Accident Prevention Plan. The Contracting Officer will review the proposed Plan. If the plan requires any revisions or corrections, the Contractor shall resubmit the Plan within ten (10) days. No progress payments will be made until the Plan is accepted.

1.3 QUALITY ASSURANCE

A. Comply with contract clauses entitled "Accident Prevention" and "Permits and

Responsibilities". In case of conflicts between Federal, State, and local safety and health requirements, the most stringent shall apply. Equipment or tools not meeting OSHA requirements will not be allowed on the project sites. Failure to comply with the requirements of this section and related sections may result in suspension of work.

B. Qualifications of Employees:

1. All employees must be physically qualified and able to perform their assigned duties in a safe manner.

2. Do not allow employees to perform work whose ability or alertness is impaired because of prescription or illegal drug use, fatigue, illness, intoxication, or other conditions that may expose themselves or others to injury.

1.4 ACCIDENT REPORTING

A. Operators of vehicles, hoisting equipment, and hazardous plant equipment shall be able to understand signs, signals, and operating instructions, and be fully capable of operating such equipment. Provide operating instructions for all equipment. Newly hired operators shall be individually tested by an experienced operator or supervisor to determine if they are capable of safely operating equipment.

B. Reportable Accidents: A project reportable accident is defined as death, occupational disease, traumatic injury to employees or the public, fires, and property damage by accident in excess of one hundred dollars ($100). Notify Contracting Officer immediately in the event of a reportable accident. Within seven (7) days of a reportable accident, fill out and forward to

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Contracting Officer an Accident/Property Damage Report (Form CM-22). Form may be obtained from the Contracting Officer.

PART 2 - PRODUCTS

2.1 ACCIDENT PREVENTION PLAN

A. The Plan shall be written to comply with OSHA and project requirements (a generic plan is not acceptable) including but not limited to the following:

1. Name of responsible supervisor to carry out the program.

2. Weekly and monthly safety meetings.

3. First aid procedures.

4. Outline of each phase of the work, the hazards associated with each major phase, and the methods proposed to provide for property protection and safety of the public, National Park Service personnel, and Contractor's employees. Identify the work included under each phase.

5. Training, both initial and continuing.

6. Planning for possible emergency situations, such as floods, fires, cave-ins, slides, explosions, power outages, and wind storms. Such planning shall take into consideration the nature of construction, site conditions, and degree of exposure of persons and property.

2.2 FIRST AID FACILITIES

A. Provide adequate facilities for the number of employees and the hazards associated with the types of ongoing construction work at the site.

2.3 PERSONNEL PROTECTIVE EQUIPMENT

A. Meet requirements of applicable ANSI standards.

PART 3 - EXECUTION

3.1 EMERGENCY INSTRUCTIONS

A. Post telephone numbers and reporting instructions for ambulance, physician, hospital, fire department, and police in conspicuous locations at the work site.

3.2 FIRE AND LIFE SAFETY

A. Comply with the requirements of NFPA 241 (Standard for Safeguarding Construction, Alteration, and Demolition Operations).

B. Store hazardous materials in accordance with manufacturer’s and OSHA recommendations.

Maintain readily available, on site, MSDS for each chemical.

1. Immediately report all spills of hazardous materials to the park.

2. Maintain a spill emergency response kit.

3.3 PROTECTIVE EQUIPMENT

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A. Inspect personal protective equipment daily and maintain in a serviceable condition. Clean, sanitize, and repair personal items, as appropriate, before issuing them to another individual.

B. Inspect and maintain other protective equipment and devices before use and on a periodic basis to ensure safe operation.

3.4 SAFETY MEETINGS

A. As a minimum, conduct weekly fifteen (15) minute "toolbox" safety meetings. These meetings shall be conducted by a foreman or supervisor and attended by all construction personnel at the worksite. Topics need to coincide with work scheduled for the following week. Document and submit meeting minutes to the Contracting Officer within one (1) day after the meeting.

3.5 HARD HATS AND PROTECTIVE EQUIPMENT AREAS

A. A hard hat area shall be designated by the Contractor. The hard hat area shall be posted by the Contractor in a manner satisfactory to the Contracting Officer.

B. It is the Contractor's responsibility to require all those working on or visiting the site to wear hard hats and other necessary personal protective equipment at all times.

ENDOFSECTION

MORA – 158098 01 50 00 - 8

TEMPORARY FACILITIES & CONTROLS

SECTION 01 50 00

1.1 SUMMARY

A. Water Service: Water from existing water system is available for use without metering and without payment of use charges. The Contractor shall provide connections and extensions of water services as required for construction operations and ensure proper backflow prevention.

Due to limitations of the water system at Paradise, the contractor will be limited to one thousand (1,000) gallons per day.

2.1 EQUIPMENT

A. Fire Extinguishers: Portable, UL rated; with class and extinguishing agent as required by locations and classes of fire exposures.

2.2 TEMPORARY UTILITY INSTALLATION

A. Non-potable water for construction is not available within the park boundaries. The Contractor shall furnish non-potable water from a source outside the park boundary.

B. Potable water is available on site. Make connections to existing facilities as needed. Facilities must be cleaned and maintained in a condition acceptable to the NPS. At Substantial Completion, restore these facilities to condition existing before initial use.

C. Sanitary Facilities:

1. Toilets: Use of existing toilet facilities will be permitted, as long as facilities are cleaned and maintained in a condition acceptable to NPS. At Substantial Completion, restore these facilities to condition existing before initial use.

D. Electric Power Service: Use of existing electric power service will be permitted, as long as equipment is maintained in a condition acceptable to the NPS.

1. When temporary connections are removed, restore existing utility services to their original condition.

E. Telephone Service: No hard wire telephone service is available on site for Contractor's use.

Cell phone service is very limited or not available.

2.3 SUPPORT FACILITIES INSTALLATION

A. Waste Disposal Facilities: Provide waste-collection containers in sizes adequate to handle waste from construction operations. Comply with requirements of authorities having jurisdiction.

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2.4 SECURITY AND PROTECTION FACILITIES INSTALLATION

A. Environmental Protection: Provide protection, operate temporary facilities, and conduct construction in ways and by methods that comply with environmental regulations and that minimize possible air, waterway, and subsoil contamination or pollution or other undesirable effects.

B. Cleaning of Equipment: The Contractor shall ensure that prior to moving on to the Project Area, all equipment, is free of soil, seeds, vegetative matter, or other debris that could contain or hold seeds. Ensure that all equipment has been pressure washed and is free of exotic species prior to start-up of operations and moving of equipment to Project Area. Equipment shall be considered free of soil, seeds, and other debris when a visual inspection does not disclose such material. Disassembly of equipment components or specialized inspection tools are not required.

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EXECUTION

SECTION 01 73 40

1.1 INSTALLATION

A. Joints: Make joints of uniform width. Where joint locations in exposed work are not indicated, arrange joints for the best visual effect. Fit exposed connections together to form hairline joints.

B. Quantity surveys: Shall be conducted, and the data derived from these surveys shall be used in computing the quantities of work performed and the actual construction completed and in place.

1. The Contractor shall furnish the originals of all asphalt weight tickets, from a certified scale to the Contracting Officer. The Contractor shall retain copies of all such material furnished to the Contracting Officer.

2. In case of discrepancy between asphalt weigh tickets and calculated in-place quantities, NPS shall complete a survey of actual improvements to be used as necessary to determine the amount of progress payments.

1.2 PROGRESS CLEANING

A. General: Clean Project site and work areas daily, including common areas. Coordinate progress cleaning for joint-use areas where more than one installer has worked. Enforce requirements strictly. Dispose of materials lawfully.

1. Comply with requirements in NFPA 241 for removal of combustible waste materials and debris.

2. Do not hold materials more than seven (7) days during normal weather or three (3) days if the temperature is expected to rise above eighty (80) deg F (27 deg C).

3. Containerize hazardous and unsanitary waste materials separately from other waste. Mark containers appropriately and dispose of legally, according to regulations.

4. Site: Maintain Project site free of waste materials and debris.

5. Work Areas: Clean areas where work is in progress to the level of cleanliness necessary for proper execution of the Work.

a. Remove liquid spills promptly.

b. Where dust would impair proper execution of the Work, broom-clean or vacuum the entire work area, as appropriate.

c. Contractor shall provide progress cleaning that minimizes sources of food, water, and harborage available to pests.

6. Waste Disposal: Burying or burning waste materials on-site will not be permitted.

Washing waste materials down sewers or into waterways will not be permitted.

1.3 CORRECTION OF THE WORK

A. Repair or remove and replace defective construction. Restore damaged substrates and finishes.

1. Repairing includes replacing defective materials, refinishing damaged surfaces and touching up with matching materials.

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2. Remove and replace damaged surfaces that are exposed to view if surfaces cannot be repaired without visible evidence of repair.

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CLOSEOUT PROCEDURES

SECTION 01 77 00

CLOSEOUT PROCEDURES

1.1 SUBSTANTIAL COMPLETION AND FINAL INSPECTION

A. When project, or designated portion of project, is substantially complete, request in writing a final inspection. Upon receipt of written request that project is substantially complete, the Contracting Officer will proceed with inspection within two (2) days of receipt of request or will advise the Contractor of items that prevent the project from being designated as substantially complete.

B. If, following final inspection, the work is determined to be substantially complete, Contracting Officer will prepare a Punch List to be corrected before final acceptance and issue a Letter of Substantial Completion. Contractor shall complete the work described on the Punch List within five (5) calendar days, as weather permits. If the Contractor fails to complete the work within this time frame, the Contracting Officer may either replace or correct the work with an appropriate reduction in the contract price or charge for re-inspection costs in accordance with the Inspection of Construction clause of the contract.

C. If, following final inspection, the work is not determined to be substantially complete;

Contracting Officer will notify Contractor in writing. After completing work, Contractor shall request a new final inspection. All re-inspection costs may be charged against the Contractor in accordance with the Inspection of Construction clause of the contract.

1.2 FINAL ACCEPTANCE OF THE WORK

A. Prior to requesting inspection for verification of completion of all outstanding items.

B. After all deficiencies have been corrected, a Letter of Final Acceptance will be issued.

DIVISION 31

EARTHWORK

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RESTORATION OF SURFACES

SECTION 31 23 33.10

1.1 DESCRIPTION

A. The work covered by this Section includes restoration to all types of surfaces, sidewalks, curbs, gutters, culverts and other features disturbed, damaged or destroyed during the performance of the work under or as a result of the operations of the contract.

1.2 GENERAL

A. The quality of materials and the performance of work used in the restoration shall produce a surface or feature equal to or better than the condition of each before the work began.

1.3 TEMPORARY PAVEMENT

A. Unless otherwise specified or directed temporary pavement shall consist of a two (2) sack slurry to such a depth as required to withstand the traffic to which it will be subjected.

B. For dust prevention, the Contractor shall treat all surfaces as frequently as may be required.

C. The temporary surface shall be maintained by the Contractor in a safe and satisfactory condition until such time as the permanent paving is completed. The Contractor shall immediately remove and restore all pavement as shall become unsatisfactory.

1.4 PERMANENT PAVEMENT REPLACEMENT

A. The permanent and final repaving of all trails and similar surfaces where pavement has been removed, disturbed, settled or damaged by or as a result of performance of the Contract shall be repaired and replaced by the Contractor, by a new and similar pavement, in accordance with Asphalt Concrete Pavement – Section 32 12 16.

1.5 PREPARATION FOR PERMANENT PAVEMENT

A. When scheduled and within the time specified, the temporary pavement shall be removed and a base prepared, at the depth required by the Contracting Officer to receive the permanent pavement.

B. The base shall be brought to the required grade and cross-section and thoroughly compacted before placing the permanent pavement.

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C. Any base material which has become unstable for any reason shall be removed and replaced with compacted materials.

D. The edges of existing asphalt pavement shall be cut a minimum of one (1) foot beyond the excavation of disturbed base whichever is greater.

1.6 ASPHALT PAVEMENT

A. The permanent asphalt pavement replacement for trails shall be at a minimum replaced with bituminous materials of the same depth and kind as the existing unless otherwise specified.

B. Prior to placing of any bituminous pavement a sealer shall be applied to the edges of the existing pavement and other features.

C. Prior to placing of any bituminous pavement overlay, a tack layer will be applied on existing pavement.

D. The furnishing, handling and compaction of all bituminous materials shall be in accordance with the Contracting Officer.

1.7 STONE OR GRAVEL PAVEMENT

A. All pavement and other areas surfaced with stone or gravel shall be replaced with material to match the existing surface unless otherwise specified.

B. The depth of the stone or gravel shall be at least equal to the existing.

C. After compaction the surface shall conform to the slope and grade of the area being replaced.

1.8 OTHER TYPES OF RESTORATION

A. Flow lines indicated on the topographical survey shall not be altered by construction activity.

The Contractor is responsible for re-establishing flow lines that have been affected by construction equipment or personnel under the supervision of the Contractor.

B. Trails and slopes shall be restored to their original condition upon completion of construction activity at a given area. The Contractor must ensure that no new channel flow lines or watercourses have been created as a result of construction activity.

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SOIL EROSION & SEDIMENT CONTROL

SECTION 31 25 00

SOIL EROSION & SEDIMENTATION CONTROL

A. The work in this Section includes those items necessary for erosion and sedimentation control on project site.

1.2 EROSION AND SEDIMENTATION CONTROL PRACTICES

A. Erosion and sedimentation control measures shall be utilized throughout the construction site to prevent erosion during construction and after construction until vegetation is established.

B. Erosion and sedimentation control measures shall be appropriate to the site. The following general practices shall be used where applicable:

C. Uncover the smallest practical area of land.

1. Use of temporary vegetation, mulch or other cover to protect areas during construction will require approval by the Contracting Officer.

2. Utilize dikes, or silt fence to trap sediment. Any seed, or temporary vegetation used on site will require approval by the Contracting Officer.

PART 2 PRODUCTS

2.1 NETTING

A. Fibrenet Organic Jute Fiber – American Excelsior Company or approved equal.

2.2 BIODEGRADABLE TURF STAPLES

A. Estaples – American Excelsior Company or approved equal.

3.1 GENERAL

A. Burlap wattles and erosion control measures shall be established prior to exposing any erodible material. Site grading and drainage operations are to be conducted in a manner to prevent or lessen excessive soil erosion of the construction site work area.

B. Jute netting shall be installed over backfilled soil. The netting must extend twelve (12) inches beyond the edges of the backfilled area. Biodegradable turf staples shall be used in accordance with manufacturer recommendations, to secure netting.

DIVISION 32

EXTERIOR IMPROVEMENTS

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ASPHALT CONCRETE PAVING

SECTION 32 12 16

A. The work of this Section consists of constructing one or more surface courses (lifts) composed of a mixture of aggregate, filler if required, and bituminous material, placed on a base.

B. Paving shall follow the contract document’s designed horizontal alignment within the Park’s trail routes.

1.2 SUBMITTALS

A. Job-Mix Formula: Before producing bituminous mixture, submit a job-mix formula for each mixture to the Contracting Officer for approval. Should a change in source of material be proposed, or should a job-mix formula prove unsatisfactory, submit a new job-mix formula for approval.

1. Each job-mix formula submitted shall propose definite single values for:

a. The percentage of aggregate passing each specified sieve, based on the dry weight of the aggregate.

b. The percentage of bituminous material to be added based on the total weight of the mixture, and the percentage of any stabilizing agent such as lime, Portland cement, or anti-strip agent.

c. The percentage of high natural CRM in the total CRM.

2. In addition, the job-mix formula shall provide a mixture having a minimum wet retained strength of one hundred-twenty five (125) psi, as determined by AASHTO T165-82, and an index of retained strength of not less than seventy (70) percent.

B. Certificates and Laboratory Testing Results:

1. Gradation analysis, sand equivalent, and durability index for aggregate base course.

2. Certification from supplier that asphalt cement is of correct type and meets requirements of this Section.

3. Compaction test results.

4. Contractor shall furnish certified lab results of job mix formula of percent voids, stabilometer and aggregate gradation analysis for the asphalt concrete.

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1.3 PRESERVATION OF NATURAL FEATURES

A. Confine all operations to work limits of the project. Heavy equipment will be confined to use on the trails to be paved, or as determined by the Contracting Officer. Avoid unnecessary soil compaction, disturbance of ground cover, and creation of wheel ruts. Restore damaged areas, repairing or replacing damaged trees and plants, at no additional expense to the Government.

Do not fasten ropes, cables, or guys to existing features. All equipment shall be thoroughly pressure washed prior to transport to the park to prevent unintentional importation of seed or soil materials. Contractor shall allow for Contracting Officer to inspect equipment to assure that it is clean prior to entering Park.

1.4 PROJECT CONDITIONS

A. Apply mixture only during hours of daylight; when air temperature is fifty (50) degrees F or higher; when surfaces to be paved are dry and free of frost, snow, or ice; and when precipitation is not imminent.

PART 2 - PRODUCTS

2.1 MATERIAL

A. Asphalt Cement Prime Coat - Meet requirements of ASTM D 2027, MC 70, plus or minus one grade.

B. Tack Coat - Emulsified asphalt meeting requirements of Grade CSS-1 or Grade CSS-1H, or Grade STE-1 per WSDOT 5-04.3(5)A.

C. Pavement

D. Asphalt Binder - WSDOT 9-02.1(4)

1. Meet requirements of AASHTO M320 Table 1, Performance grade PG 52-22

E. Aggregates - WSDOT 9-03.8

1. Fine to coarse mineral aggregates with Los Angeles Wear less than thirty percent (30%) and mineral filler (AASHTO M 17) meeting following proportion requirements:

Sieve Size % Passing – Control

Points 3/4” 99-100 1/2" 90-100 3/8” 90 Maximum

No. 8 28-58 No. 200 2.0-7.0

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2. Up to twenty percent (20%) by weight of total HMA may consist of pulverized, recycled asphalt pavement (RAP), providing aggregate grading requirements are met.

2.2 ASPHALT CONCRETE JOB MIX

A. Develop mix design according to WSDOT Standard Specifications for HMA Class ½ PG 52-

22 with ESAL’s of < 0.3 million (WSDOT 5-04, 9-02, 9-03.8). The thickness of asphalt concrete required shall be a minimum of two (2) inches.

3.1 EQUIPMENT

A. Hauling Equipment: Trucks used for hauling bituminous mixtures shall have tight, clean, smooth metal beds which have been thinly coated with a minimum amount of paraffin oil, lime solution, or other approved material to prevent the mixture from adhering to the beds. Each truck shall have a cover of canvas or other suitable material of such size as to protect the mixture from the weather.

B. Bituminous Pavers:

1. Bituminous pavers shall be self-contained, power-propelled units, provided with an activated screed or strike-off assembly, heated if necessary, and capable of spreading and finishing courses of bituminous plant mix material in widths applicable to the specified typical section and thicknesses shown on the drawings.

2. The paver shall be equipped with a receiving hopper having sufficient capacity for a uniform spreading operation. The hopper shall be equipped with a distribution system to place the mixture uniformly in front of the screed.

3. The paving machine shall be equipped with an automatic control system which will control the elevation of the screed and which is automatically actuated by a system of sensor-operated devices which sense and follow reference lines or surfaces on one or both sides of the machine as required.

4. Maintain screed at the proper elevation at each end by controlling the elevation of one end and automatically controlling the transverse slope or by controlling the elevation of each end independently, as directed.

5. The screed or strike-off assembly shall effectively produce a finished surface of the required evenness and texture without tearing, shoving or gouging the mixture. The paver shall be capable of being operated at forward speeds consistent with satisfactory laying of the mixture.

C. Rollers shall be of the steel-wheel, vibratory, pneumatic tire type, or combination, capable of reversing without backlash. Steel-wheel rollers other than vibrating shall be capable of exerting a force of not less than two hundred-fifty (250) pounds per inch of width of the roller. Vibrating steel-wheel rollers shall have a minimum weight of six (6) tons.

D. Pneumatic-tired rollers shall have smooth tread tires of equal size that will provide a uniform compaction pressure for the full width of the roller and shall be capable of exerting a ground pressure of at least eighty (80) pound per square inch.

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3.2 PREPARATION

A. Prior to placement of the AC pavement, ensure that the base material is competent and compacted and ready to receive material and that the new surface maintains the existing trailway grades.

B. Conditioning of Existing Surface:

1. Sub-Grade

2. Verify fine grade surface matches Drawing improvements as required by Contract

Documents. When the surface of the base is irregular, it shall be brought to the attention of the Contracting Officer. Irregularities of uniform grade caused by contractor shall be corrected by contractor prior to placement of asphalt pavement or as directed by the Contracting Officer.

C. Tack coat all saw cut and vertical asphaltic concrete and concrete surfaces that will be in contact with paving. Tack coat existing asphalt surface in preparation of overlay.

D. Preparation of Bituminous Material: Provide a continuous supply of the bituminous material to the mixer at a uniform temperature at all times; avoid local overheating.

E. Transport and place bituminous mixture on the trail in a manner that will minimize segregation.

Remove segregated areas behind the paver immediately and replace the segregated material with specification material before the initial rolling has taken place. The removal and replacement of non-specification material or unacceptable work shall be accomplished at no additional expense to the Government.

3.3 PREPARATION OF AGGREGATES

A. Aggregates for pug-mill mixtures shall be dried and heated to the required temperature.

B. Properly adjust flame to avoid damage to the aggregate and to avoid soot on the aggregate.

C. Untreated aggregates for dryer-drum mixtures will not require prior preparation other than gradation control, except that those containing gravitational water shall be stockpiled and allowed to drain prior to mixing. Moisture in final mixture shall be limited to three percent (3%) maximum.

3.4 MIXING

A. Combine aggregates in the mixer in the amount of each fraction of aggregates required to meet the job-mix formula. The bituminous material shall be measured or gauged and introduced into the mixer in the amount specified by the job-mix formula.

B. After the required amounts of aggregate and bituminous material have been introduced into the mixer, the materials shall be mixed until a complete and uniform coating of the particles is secured.

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C. The bituminous material and aggregate for pug-mill mixtures shall be introduced into the mixer within thirty-five (35) degrees F of each other. Temperature of pug-mill mixtures shall be controlled between two hundred-twenty five (225) and three hundred (300) degrees F.

D. Material delivered to the paver shall not be less than two hundred-twenty five (225) degrees F.

3.5 AGGREGATE SUB-BASE (Material, and Installation provided by the Park)

A. The sub-base shall be native fill compacted to ninety-five (95) percent maximum density.

Thickness will vary.

3.6 AGGREGATE BASE COURSE (Material, and Installation provided by the Park)

A. The base shall be a crushed surfacing top course compacted to ninety-five (95) percent maximum and shall be a uniform thickness of at least four (4) inches.

3.7 SPREADING AND FINISHING MIX

A. Site Tolerances

1. Sub-Grade – One (1.0) inch high. Measure using string line from wood block to wood block at or between grade breaks.

2. Base for asphalt patching-

a. Base shall be four (4) inches thick minimum after compaction, except where in special areas for constructability a minimum of two (2) inches may be used as shown on Drawings.

b. Measure using string line from wood block to wood block, or grade break.

3. Base for new pavement shall match the thickness on the typical section shown on the plans.

4. Paving

B. Apply asphaltic concrete paving in single lift to two (2) inches thick minimum after compaction.

C. Paving adjacent to cast-in-place concrete site elements shall be between one-fourth (1/4) inch higher than concrete and flush with concrete.

D. Surface texture of hand work areas shall match texture of machine-laid areas.

E. HMA shall not be placed on any wet surface or when average surface temperatures are below those specified in the following table:

SURFACE TEMPERATURE LIMITATION

Compacted Thickness (ft) Wearing Course Other Courses Less than 0.10 55° F 45° F

0.10 to 0.20 45° F 35° F

0.20 plus 35° F 35° F

F. For HMA, place at temperatures between two hundred-fifty (250) and three hundred-

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twenty five (325) degrees F with a self-propelled laydown machine.

G. Longitudinal bituminous joints shall be vertical and properly tack coated if cold. Transverse joints shall always be tack coated.

H. Compaction

1 Compact asphaltic concrete paving to at least ninety-one percent (91%) of the reference maximum density. Determine percent compaction by dividing density of test cores as determined by either ASTM D 1188 or ASTM D 2726 by laboratory reference density as determined by WSDOT FOP for AASHTO T209.

2. Roll with powered equipment capable of obtaining specified density.

3. Begin breakdown rolling immediately after asphalt is placed when asphalt temperature is at maximum. Complete breakdown rolling before mix temperature drops below two hundred-forty (240) degrees F. Complete handwork compaction concurrently with breakdown rolling.

4. Complete intermediate rolling as soon as possible after breakdown rolling and before mix temperature drops below one hundred-eighty five (185) degrees F. Do not roll paving for compaction purposes after asphalt temperature falls below one hundred-eighty five (185) degrees F. Do not use vibratory rollers on asphalt after temperature falls below one hundred-eighty five (185) degrees F.

5. Execute compaction so visibility of joints is minimized. Complete finish rolling to improve asphalt surface as soon as possible after intermediate rolling and while asphalt paving is still warm. Do not use vibration for finish rolling.

3.8 ACCEPTANCE REQUIREMENTS

A. Surface Tolerance: Surface shall be uniform with no 'birdbaths.' Leave finished surfaces clean and smooth. Variations from specified grades shall not exceed one-fourth (1/4) inch. Correct all humps or depressions by removing defective work and replacing it with new material at no additional expense to the Government.

B. A uniform compacted thickness shall be obtained for each course equal to or greater than the thickness shown. Individual tests shall not vary by more than plus one-fourth (1/4) inch.