Attachment-1 Specifications.pdf

Attachment 1

SPECIFICATIONS

Paving Parking Lot, Paving Roadway, and Sealing Cracks in Existing Pavement Neville Island Locks and Dam Branch Office

Pittsburgh, Allegheny County, Pennsylvania

SCOPE OF WORK

1. GENERAL REQUIREMENTS

General

The work is located at Neville Island Locks and Dam Branch Office, 3900 Grand Avenue, Building 1002, Pittsburgh, PA 15225-1510, near the Ohio River, on Neville Island, near Pittsburgh, Pennsylvania. The site of the work may be reached from state and local roads.

The general description of the work is to furnish all equipment, labor, materials, layout of work, and supervision to improve the existing bituminous-surfaced parking area and gravel-surfaced roadway as specified herein. The western parking lot will receive approximately 2” of 1,230 square yards bituminous wear course, as well as 65 square yards of full depth repair. Two walkways adjacent to the parking lot will receive approximately 8 square yards of 4” binder course and 2” of base course. The existing gravel roadway will be graded and dressed with base course as required to meet drainage requirements. The existing gravel roadway will receive approximately 65 square yards of 4” of binder course, and 2” of wear course. The eastern existing parking lot will receive no greater than 200 lf of air cleaned and sealed crack repair. Contract drawings and photos of the areas are provided as attachments below.

Lump Sum Price Items

Payment shall include all costs of labor, materials, supplies, equipment, supervision, cleanup, and other costs of completing the work as specified. All material provided in the performance of this contract shall be new and meet the requirements of the specifications.

Safety Requirements

In addition to the requirements included in the provisions of this contract, all work shall comply with the most recent edition of the USACE Engineering Manual (EM) 385-1-1, “Safety and Health Requirements Manual”, and all applicable federal, state, and local laws, ordinances, criteria, rules, and regulations. Where the requirements herein, applicable laws, criteria, ordinances, regulations, and referenced documents vary, the most stringent requirements govern.

If there are any standards that require interpretation, submit matters to the appropriate administrative agency for resolution before the commencement of work.

The latest version of the EM 385-1-1 is available online at:

http://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/EM_3 85-1-1.pdf

1.3.1 Accident Prevention Plan

Due to the nature of anticipated work, the Contractor may submit an “Abbreviated” Accident Prevention Plan (APP) that contains the Contractor’s safety policies and procedures applicable to the work to be performed under the contract. The Abbreviated APP shall be developed in accordance with EM 385-1-1 Appendix A, Paragraph K. This APP and applicable appendices shall be submitted and approved by the COR at least one week prior to the pre-work conference and prior to any commencement of work.

The Abbreviated APP Form, Form A-01, of the EM 385-1-1 may be used by the Contractor to assist in the development of their Abbreviated APP. Accident Prevention Plan (APP)(Attachment 3).

1.3.1.1 Infectious Disease Exposure Prevention, Preparedness, and Response

Plan

Due to the recent COVID-19 pandemic, all Contractors that perform operations on LRP USACE-owned/operated facilities are to include an Infectious Disease Exposure Prevention, Preparedness, and Response Plan as an addition to their overall APP. The plan shall describe how the Contractor will implement the requirements and best practices issued by Federal, State, and Local authorities in order to prevent the spread of COVID and/or other infectious diseases.

Once accepted by the COR, the APP and all attachments will be enforced as part of the contract. Disregarding provisions of this contract or the accepted APP is a cause for stopping of that portion of the work at the direction of the COR until the matter has been rectified.

A copy of the accepted APP shall be available on the worksite at all times. The Contractor shall provide on-going evaluations of the APP throughout the life of the contract. Changes, revisions, and updates to the APP shall be reviewed and accepted by the COR.

1.3.2 Risk Management

A risk management assessment tool, such as an activity hazard analysis (AHA), shall be developed by the contractor performing the work for each type of activity the Contractor will perform as part of the Contract. The assessment shall identify the job steps, specific anticipated hazards, site conditions, equipment, materials, personnel, and the control measures to be implemented to control the hazards. Risk assessments shall be submitted for review at least 15 working days prior to the start of the activity, task, or defined feature of work is set to begin. The Government reserves the right to require the Contractor to revise and resubmit any documents if they fail to effectively identify the work sequence, specific anticipated hazards, site conditions, equipment, materials, personnel, and the control measures to be implemented. Work shall not begin until the assessments have been accepted by the COR and discussed with all engaged in the activity.

These risk assessments shall be developed in accordance with EM 385-1-1 Section 1, or as specified by the Contracting Officer. The Contractor may use the Attached Activity Hazard Analysis (AHA) form to assist with completion of their risk assessments, Activity Hazard Analysis (AHA) Form (Attachment 5).

Each employee performing work as part of an activity or task shall review the risk assessment for the activity and sign the signature log designated for the assessment prior to beginning work. A signature log shall be maintained for each risk assessment.

1.3.3 Designated Persons

The Contractor shall provide Qualified and/or Competent Persons in accordance with EM 385-1-1, OSHA, ANSI, and where specified herein. All Qualified and Competent Persons shall be designated in writing and shall meet the requirements for the specific activity for which they are designated.

Competent Persons identified in the Contractor’s Safety and Health Program and Government-accepted APP shall be onsite at all times when the work that presents the hazards associated with the competency is being performed.

Certificates of Qualification/Competency shall be provided to the Contracting Officer for review as part of the applicable AHAs and appendices of the APP.

1.3.4 Site Safety and Health Officer (SSHO)

Based on the limited-scope of this Contract, in lieu of appointing a Site Safety and Health Officer (SSHO) at the project site, the Contractor may appoint a Designated Representative (DR) at the site to function as a collateral duty safety person, provided that an individual meeting the requirements of an SSHO as stated in EM 385-1-1 Section 1, Paragraph A.17 supervises the functioning of the DR. The DR shall perform safety programs and tasks as prescribed by the SSHO and report safety findings to the SSHO. The SSHO or DR shall be on site at all times work is being done. Note: Any activities that have a RAC of high or extremely high retracts the allowance to only have a DR, and shall have an SSHO on site.

1.3.5 Minimum Personal Protective Equipment

Personal Protective Equipment (PPE) is governed in all areas by the nature of work personnel are performing based on conducted hazard evaluations. AHAs shall detail the PPE to be used that will provide appropriate protection for the work to be performed when required. All PPE shall be provided by the Contractor, used, and maintained in a sanitary and reliable condition whenever the hazard dictates use.

Mandatory PPE, at minimum, shall include: hard hat (construction sites), long pants, short sleeve shirts, and leather or protective work shoes or boots. Personal Floatation Devices (PFDs) shall be worn at all times when working above or near water in which other fall protection methods do not provide the appropriate protection.

1.3.6 Mishap Reporting

A mishap is any unplanned, undesired event that occurs during the course of work being performed, to include, accidents, incidents, and near misses. All mishaps shall be reported to the Contracting Officer within 24-hours after notification from the affected employee(s). Contractors are responsible for maintaining an OSHA Log of Work- Related Injuries and Illnesses (Form 300) and complying with all reporting and recordkeeping requirements specified in 29 Code of Federal Regulations (CFR) 1904.

1.3.7 Damage Reports

All instances where Government materials, supplies, property, and/or equipment are damaged, shall be reported immediately to the Contracting Officer.

1.3.8 Hazardous Material Exclusion

Notwithstanding any other hazardous material used in this contract, radioactive materials or instruments capable of producing ionizing/non-ionizing radiation (with the exception of radioactive material and devices used in accordance with EM 385-1-1 such as, nuclear density meters for compaction testing and laboratory equipment with radioactive sources) as well as materials which contain asbestos, mercury, polychlorinated biphenyls (PCBs), Diisocyanates, lead, lead-based paint (LBP), and hexavalent chromium, are prohibited. The Contracting Officer, upon written request by the Contractor, may consider exceptions to the use of any of the above excluded materials. Low mercury lamps used within fluorescent lighting fixtures are allowed as an exception without further Contracting Officer approval. Notify the Radiation Safety Officer (RSO), Safety Office, and the Contracting Officer prior to excepted items of radioactive material and devices being brought on site.

1.3.9 Unforeseen Hazardous Materials

All known hazardous materials will be identified by the Government to the contractor. If materials that may be hazardous to human health upon disturbance are encountered during the performance of contract work, that portion of the work shall be stopped, and the COR immediately notified.

Quality Control

The contractor shall complete and submit a Quality Control Plan (QCP). There shall be one qualified Superintendent and one qualified Quality Control inspector. The Safety person and the Quality Control inspector may be the same person and may be the DR.

The quality control system shall consist of plans, procedures, and organization necessary to produce an end product which complies with the contract requirements.

Cover all construction operations, both onsite and offsite, and be keyed to the proposed construction sequence. The project superintendent shall be held responsible for the quality of work and is subject to removal by the Contracting Officer. The Contracting Officer reserves the right to conduct any inspections or perform any tests deemed necessary at any time during the execution of the contract to determine conformance with the requirements of theses specifications. Superintendent and QC shall be on site at all times work is being done. See the attached Quality Control Plan (QCP) Template (Attachment 2)

Project/Site Conditions

1.5.1. Verification of Field Conditions

The Contractor shall verify all dimensions and conditions in the field and shall advise the Contracting Officer of any discrepancy before performing any work.

1.5.2. Work Areas

Work areas shall be coordinated with and approved by the ACO, Resident Engineer, and the Contracting Officer. The limits of the Contractors work areas shall be limited to those actually required to perform the work. The Contractor shall be fully responsible for determining the methods used to transport materials and equipment to and from the areas as well as the removal of waste materials from such spaces. The Contractor shall ensure that his operations will not interfere with the operation of the project or the duties of project personnel. Transport of materials and equipment shall be the responsibility of the Contractor. Neither the contractor nor the contractor’s employees shall be permitted inside any of the federally owned buildings for any reason. Work areas shall be coordinated and agreed on with the Chief of Lock and Dams Branch. (POCs section 1.10)

1.5.3. Work under Other Contracts

Attention is directed to the fact that other Contractors may be employed by the Government at or in the vicinity of the work covered by these specifications. It is noted that the information provided is for the Contractor’s information, and no attempt has been made to list all the work activities required under those contracts. Unless specified otherwise, all Contractors shall have equal rights to the use of access roads and other Areas. The Contractor employed under this contract shall cooperate with other Contractors so that the work may be performed with maximum efficiency.

1.5.4. Time of Performance

The Contractor shall notify the Points of Contact (POCs section 1.10) prior to start of work. The Contractor shall schedule work through the POCs. The Contractor shall coordinate work with the POCs NLT 3 days before starting work. Work shall be commence within 5 calendar days after the date the Contractor receives the Notice to Proceed (NTP) and complete the work by 15 September 15, 2021. Other contractors may be working in the same area performing other work. The contractor shall execute work in a manner so as not to impede other contract work. The Contractor shall confine all operations at the work site between the hours of 7:30 AM and 4:00 PM, Monday through Friday, unless otherwise approved by the Resident Engineer. Work shall not be permitted on weekends or Federal holidays unless otherwise approved by the Resident Engineer. Work shall be scheduled so that all work shall be completed in one construction season.

1.5.5. Period of Performance

All work, including cleanup of the premises, shall be completed by 15 September 2021.

Permits

The Contractor shall be responsible for obtaining any licenses and permits and complying with any laws, codes, and regulations applicable to the execution of this work as required federally and by the State of Pennsylvania.

Protection of Government Property

The contractor shall protect all government property during the performance of this contract. All damage to existing government property as a result of the contractors work shall be repaired or replaced to the satisfaction of the Contracting Officer. Work area shall be cleaned by the contractor after construction is complete.

Protection of Personnel

The Contractor shall ensure that adequate measures are in place to protect workers, facility operation personnel and the public from injury due to the operations being performed. All protective measures shall be in accordance with EM 385-1-1.

Inspections and Acceptance of Work

Notwithstanding other provisions of this contract, all materials and work to be performed under this contract shall be inspected and accepted by the Contracting Officer. The Contracting Officer shall be the individual solely authorized to reject materials, disapprove or approve any work in progress, or order or direct any revision or change to the plans and specifications as presently shown and stated.

Points of Contact (POC)

Prior to commencement of any work being performed on site, the contractor shall participate in a Pre-work Meeting with the Administrative Contacting Officer (ACO) and the Facility Manager.

Chief, Locks and Dams Branch – Mr. John Dilla, 412- 395-7651 john.p.dilla@usace.army.mil Resident Engineer – Mr. David Conrad, 412- 395-7679, david.t.conrad@usace.army.mil Facility Maintenance Engineer – Mr. Tom Forsyth, 412-260-0468 thomas.g.forsyth@usace.army.mil

Key Personnel

1.11.1. Superintendent

Provide project superintendent with a minimum of 5 years’ experience in construction with at least 5 of those years as a superintendent on paving projects similar in size and complexity. The individual must be familiar with the requirements of EM 385-1-1 and have experience in the areas of hazard identification and safety compliance. The individual must be capable of interpreting a critical path schedule and construction drawings. The Contracting Officer may request proof of the superintendent’s qualifications at any point in the project if the performance of the superintendent is in question.

1.11.2. Quality Control System Manager (QCSM)

The QCSM is required to be a graduate engineer, graduate architect, or a graduate of construction management, or a construction person with a minimum of 5 years’ construction experience on paving projects similar to the tasks in this Contract. This QCSM is to always be onsite during construction and to be employed by the prime Contractor. If qualified, the QCSM may serve as the Site Safety and Health Officer (SSHO), but may not serve as the Superintendent.

1.11.3. Site Safety and Health Officer (SSHO)

The Contractor shall employ a minimum of one Competent Person at each project site to function as the primary Site Safety and Health Officer (SSHO) to implement and administer the Contractor’s safety program and the Government-accepted Accident Prevention Plan (APP) (Attachment 3). The SSHO is a full-time responsibility and shall be an employee other than the superintendent, that reports directly to a senior project, or corporate, official. The SSHO shall be present at the project site and be located so they have full mobility and reasonable access to all major work operations during the shift. The SSHO shall meet all training and experience qualifications as outlined in EM 385-1-1 Section 01, Paragraph A.17. The SSHO may also serve as the Quality Control System Manager (QCSM) and may be the Designated Representative (DR), but the SSHO may not serve as the Superintendent. SSHOs shall attend the pre-construction conference, pre-work meetings, including preparatory and periodic in-progress meetings.

Security Requirements-AT/OPSEC

1.12.1. 2. Access and General Protection and Security Policy and Procedures.

The contractor and all associated subcontractors’ employees shall comply with applicable installation, facility, and area commander installation and facility access and local security policies and procedures. The Contractor shall also provide all information required for background checks to meet installation access requirements to be accomplished by the installation the USACE Security Office. The Contractor workforce must comply with all personal identity verification requirements as directed by DOD, HQDA, and/or local policy. In addition to the changes otherwise authorized by the changes clause of this contract, should the Force Protection Condition (FPCON) at any individual facility or installation change, the Government may require changes in Contractor security matters or processes. The Contractor must submit the full name, Social Security Number, and Date of Birth for all associated Contractor or subcontractor employees to the USACE Security Office, Joseph M. Bali, 412-395-7162, joseph.m.bali@usace.army.mil. The background check request must contain the USACE Pittsburgh District contract number and location. The required information may be faxed to 412-395-7173 with a coversheet which identifies the USACE Pittsburgh District contract number and location and an email address for the requesting contractor. The District retains the right to deny any contractor and subcontractor employee from working on one of its contracts based on final background investigation results, LRP Security Information (Attachment 4).

1.12.2. 2b. For contractors who do not require Common Access Card

(CAC), but require access to a DOD facility or installation.

Contractor and all associated sub-contractors employees shall comply with adjudication standards and procedures using the National Crime Information Center Interstate Identification Index (NCIC-III) and Terrorist Screening Database (TSDB) (Army Directive 2014-05 / AR 190-13), applicable installation, facility and area commander installation/facility access and local security policies and procedures (provided by government representative, as NCIC and TSDB are available), or, at OCONUS locations, in accordance with status of forces agreements and other theater regulations.

1.12.3. 15. Pre-screen candidates using E-Verify Program.

The Contractor must pre‐screen Candidates using the E‐verify Program (http://www.uscis.gov/e-verify) website to meet the established employment eligibility requirements. The Vendor must ensure that the Candidate has two valid forms of Government issued identification prior to ensure the correct information is entered into the E‐verify system. An initial list of verified/eligible Candidates must be provided to the KO no later than 3 business days after the initial contract award.

2. GENERAL REQUIREMENTS

References

The publications listed below form a part of this specification to the extent referenced.

The publications are referred to within the text by the basic designation only. Latest reference version should always be used.

PennDOT

1.11 PennDOT Pub 408

AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION

OFFICIALS (AASHTO)

1.12 AASHTO M 156(2013; R 2017) Standard Specification for Requirements for Mixing Plants for Hot-Mixed, Hot-Laid Bituminous Paving Mixtures

1.13 AASHTO M 320(2017) Standard Specification for Performance-Graded Asphalt Binder

1.14 AASHTO T 304(2011; R 2015) Standard Method of Test for Uncompacted Void Content of Fine Aggregate

ASPHALT INSTITUTE (AI)

1.15 AI MS-2(2015) Asphalt Mix Design Methods

1.16 AI MS-22(2001; 2nd Ed) Construction of Hot-Mix Asphalt Pavements

1.17 AI SP-2(2001; 3rd Ed) Superpave Mix Design

ASTM INTERNATIONAL (ASTM)

1.18 ASTM C29/C29M(2017a) Standard Test Method for Bulk Density (“Unit Weight”) and Voids in Aggregate

1.19 ASTM C88(2018) Standard Test Method for Soundness of Aggregates by Use of

Sodium Sulfate or Magnesium Sulfate

1.20 ASTM D140/D140M(2016) Standard Practice for Sampling Asphalt Materials

1.21 ASTM D242/D242M(2009; R 2014) Mineral Filler for Bituminous Paving Mixtures

1.22 ASTM D946/D946M(2015) Penetration-Graded Asphalt Cement for Use in

Pavement Construction

1.23 ASTM D946/D946M(2015) Penetration-Graded Asphalt Cement for Use in

Pavement Construction

1.24 ASTM D977(2017) Standard Specification for Emulsified Asphalt

1.25 ASTM D1777(1996; E 2011; R 2011) Thickness of Textile Materials

1.26 ASTM D2397/D2397M(2017) Standard Specification for Cationic Emulsified

Asphalt

1.27 ASTM D3381/D3381M(2018) Standard Specification for Viscosity-Graded

Asphalt Binder for Use in Pavement Construction

1.28 ASTM D3666(2016) Standard Specification for Minimum Requirements for

Agencies Testing and Inspecting Road and Paving Materials

1.29 ASTM D3910(2011) Design, Testing, and Construction of Slurry Seal

1.30 ASTM D4632/D4632M(2015a) Grab Breaking Load and Elongation of Geotextile

SOCIETY OF AUTOMOTIVE ENGINEERS INTERNATIONAL (SAE)

1.31 SAE AMS-STD-595A(2017) Colors used in Government Procurement

U.S. ARMY CORPS OF ENGINEERS (USACE)

1.32 COE CRD-C 171(1995) Standard Test Method for Determining Percentage of

Crushed Particles in Aggregate

U.S. GENERAL SERVICES ADMINISTRATION (GSA)

1.33 FS SS-S-1401(Rev C; Am 1; Notices 1, 2) Sealant, Joint, Non-Jet-Fuel-

Resistant, Hot-Applied, for Portland Cement and Asphalt Concrete Pavements

System Description

Perform the work consisting of pavement courses composed of mineral aggregate and asphalt material heated and mixed in a central mixing plant and placed on a prepared course meeting the requirements of PennDOT Pub 408 SUPERPAVE. HMA designed and constructed in accordance with this section shall conform to the lines, grades, thicknesses, and typical cross sections indicated. Construct each course to the depth, section, or elevation required by the drawings and roll, finish, and approve it before the placement of the next course.

Submittals

The contractor shall provide submittals for Government Approval. The Government reserves the right to require the Contractor to resubmit any item found not to comply with the contract. This does not relieve the Contractor from the obligation to furnish material conforming to the plans and specifications. It shall not prevent the Contracting Officer from requiring removal and replacement of nonconforming material incorporated in the work. Submittal Register (Attachment 6).

SD-02 Shop Drawings Paving Plan Drawing Paving Plan – Submit a Paving Plan that displays the layout showing where the contractor’s equipment shall be situated and how the contractor shall keep any materials out of the river. Drawings should show approximate square yardage of each area to be paved.

Access Plan Traffic Control Plan

SD-03 Product Data

For evaluation purposes, the bidder shall submit for approval product literature for the materials to be used. Product data shall include catalog cuts, specifications, or other descriptive data for materials proposed for use, including copies of Manufacturer’s warranties. All appropriate descriptive data shall be clearly indicated on the submittal.

Mix Design- PennDOT Certification Sheet Quality Control -Delivery bills/tickets Safety Data Sheets (SDS) for materials Asphalt Cement Binder – Certification Sheet Aggregates – Gradation Certification

SD-06 Test Reports Compaction Reports for Aggregate Base

QC Monitoring SD-07 Certificates

Asphalt Cement Binder Asphalt Cement Wear Course Crack sealant materials

SD-08 Manufacturer’s Instructions Application Application Method, including pattern and frequency of application

SD-11 Closeout Submittals Workmanship Warranty

Contractor data submission

All contractor data submissions shall be submitted to:

U.S. Army Corps of Engineers Pittsburgh District Attention: David Conrad

3510 Grand Ave Main Building Pittsburgh, PA 15225

David.t.conrad@usace.army.mil

AND

U.S. Army Corps of Engineers Pittsburgh District Attention: OPT-M (Tom Forsyth) thomas.g.forsyth@usace.army.mil

Quality Assurance

2.5.1. Pre-work Conference

After approval of submittals and before performing any work, hold a Pre-work conference to review the following:

Drawings, specifications, and submittals related to the work;

System components installation;

Contractor’s plan for coordination of the work of the various trades involved;

Quality control plan for the installation; and Safety requirements.

Coordinate pre-work conference scheduling with the Contracting Officer. The conference must be attended by the Contractor, the Contracting Officer’s designated personnel, personnel directly responsible for the work, and other trades interfacing.

Before beginning work, provide a copy of meeting notes and action items to all attending parties. Note action items requiring resolution prior to start of work.

Delivery, Storage, and Handling

2.6.1. Delivery

Inspect the materials delivered to the site for contamination and damage. Deliver materials in sufficient quantity to allow continuity of work.

2.6.2. Storage

Unload and store the materials with a minimum of handling. Provide storage facilities at the job site only in areas approved by the Contracting Officer, for maintaining materials at temperatures recommended by the manufacturer.

2.6.3. Handling

Prevent damage property. Select and operate material handling equipment so as not to damage materials. Do not use materials contaminated by exposure or moisture.

Remove contaminated materials from the site. When hazardous materials are involved, adhere to the special precautions of the manufacturer.

Equipment and Material Hauling

2.7.1. General Requirements

Equipment, tools, and machines used in the work are subject to approval. Maintain in a satisfactory working condition at all times. Calibrate equipment such as asphalt distributors, scales, batching equipment, spreaders and similar equipment within 12 months of their use. If the calibration expires during project, recalibrate the equipment before work can continue. If the Contractor proposes to haul materials or equipment by road to the work site, such hauling shall be in accordance with all permits, bonds and other requirements of the state highway department and local authorities as applicable.

No heavy hauling on public roads will be permitted until all permits and bonds have been obtained as required. The Contractor shall be responsible for investigating the load limits for local roads. All damage to transportation facilities, public or private property, or utilities caused by the Contractor’s operations shall be repaired to the satisfaction of the Contracting Officer at no additional cost to the Government. Dirt, mud, debris, and other materials which are deposited on the highways and roads shall be removed, as necessary or as determined by the Contracting Officer, to prevent creation of a dust nuisance or safety hazard. Upon completion of all work requiring use of the local roads, the roadways shall be restored to their preconstruction condition by cleaning and or reconstruction of damaged drainage facilities, base courses, and pavements as necessary. Repairs shall be made in the same manner as the original construction. No separate payment will be made for maintaining and restoring the condition of the roads, and all costs in connection therewith shall be considered as incidental to performance of the work.

2.7.2. Hauling Equipment

Provide trucks for hauling hot-mix asphalt having tight, clean, and smooth metal beds.

To prevent the mixture from adhering to them, the truck beds shall be lightly coated with a minimum amount of paraffin oil, lime solution, or other approved material. Petroleum based products shall not be used as a release agent. Each truck shall have a suitable cover to protect the mixture from adverse weather. When necessary to ensure that the mixture will be delivered to the site at the specified temperature, truck beds shall be insulated or heated and covers (tarps) shall be securely fastened.

2.7.3. Asphalt Pavers

Provide asphalt pavers which are self-propelled, with an activated screed, heated as necessary, and capable of spreading and finishing courses of hot-mix asphalt which will meet the specified thickness, smoothness, and grade. The paver shall have sufficient power to propel itself and the hauling equipment without adversely affecting the finished surface.

2.7.4. Receiving Hopper

Provide paver with a receiving hopper of sufficient capacity to permit a uniform spreading operation and equipped with a distribution system to place the mixture uniformly in front of the screed without segregation. The screed shall effectively produce a finished surface of the required evenness and texture without tearing, shoving, or gouging the mixture.

2.7.5. Automatic Grade Controls

Equip the paver and milling machine with a control system capable of automatically maintaining the specified screed elevation. The control system shall be automatically actuated from either a reference line and/or through a system of mechanical sensors or sensor-directed mechanisms or devices which will maintain the paver screed at a predetermined transverse slope and at the proper elevation to obtain the required surface. The transverse slope controller shall be capable of maintaining the screed at the desired slope within plus or minus 0.1 percent. A transverse slope controller shall not be used to control grade.

2.7.6. Rollers

Rollers shall be in good condition and shall be operated at slow speeds to avoid displacement of the asphalt mixture. The number, type, and weight of rollers shall be sufficient to compact the mixture to the required density while it is still in a workable condition. Do not use equipment which causes excessive crushing of the aggregate.

2.7.7. Bituminous Distributor

Provide a self-propelled distributor with pneumatic tires of such size and number to prevent rutting, shoving or otherwise damaging the surface being sprayed. Calibrate the distributer in accordance with ASTM D2995. Design and equip the distributor to spray the bituminous material in a uniform coverage at the specified temperature, at readily determined and controlled total liquid rates from 0.03 to 1.0 gallons per square yard, with a pressure range of 25 to 75 psi and with an allowable variation from the specified rate of not more than plus or minus 5 percent, and at variable widths. Include with the distributor equipment a separate power unit for the bitumen pump, full-circulation spray bars, tachometer, pressure gauges, volume-measuring devices, adequate heaters for heating of materials to the proper application temperature, a thermometer for reading the temperature of tank contents, and a hand hose attachment suitable for applying bituminous material manually to areas inaccessible to the distributor. The distributor will be capable of circulating and agitating the bituminous material during the heating process.

2.7.8. Heating Equipment for Storage Tanks

Use steam, electric, or hot oil heaters for heating the bituminous material. Provide steam heaters consisting of steam coils and equipment for producing steam, so designed that the steam cannot come in contact with the bituminous material. Fix an armored thermometer to the tank with a temperature range from 40 to 400 degrees F so that the temperature of the bituminous material may be determined at all times.

2.7.9. Power Brooms and Power Blowers

Use power brooms and power blowers suitable for cleaning the surfaces to which the bituminous coat is to be applied.

2.7.10. Vacuum Sweeper

Self-propelled, vacuum pickup capable of completely removing loose material and debris from pavement surface.

2.7.11. Miscellaneous Equipment

Additional equipment shall include, but not be limited to, stiff bristle brooms; squeegees to spread asphalt cement; rollers to smooth fabric; scissors or blades to cut fabric; and brushes for applying cement at fabric overlaps.

Waybills and Delivery Tickets

Certified copies of waybills and delivery tickets for all materials actually used shall be submitted during the progress of the work.

Environmental Requirements

Apply hot-mix asphalt coat only when the surface to receive the hot-mix asphalt is dry. A limited amount of moisture (approximately 0.03 gallon/square yard) can be sprayed on the surface of unbound material when prime coat is used to improve coverage and penetration of asphalt material. Apply hot-mix asphalt only when the atmospheric temperature in the has not been below 45 degrees F for the 12 hours prior to application. Wind conditions shall be suitable for installation: Wind chill may affect the proper application temperatures of materials; materials may be blown about, creating safety dangers; wrappers, coverings, and other debris may become airborne.

Sequencing

Ensure temporary protection measures are in place to preclude moisture intrusion or damage to installed materials.

Warranty

Provide material and workmanship warranties meeting specified requirements. Provide a manufacturer’s warranty that has no dollar limit, covers defects in workmanship and material, and has a minimum duration of 1 year.

Curing Period

Following application of the bituminous material and prior to application of the succeeding layer of asphalt mixture allow the bituminous coat to cure and water or volatiles to evaporate prior to overlaying. Maintain the tacked surface in good condition until the succeeding layer of pavement is placed, by protecting the surface against damage and by repairing and recoating deficient areas. [Allow the prime coat to cure without being disturbed for a period of at least 48 hours or longer, as may be necessary to attain penetration into the treated course. Furnish and spread enough sand to effectively blot up excess bituminous material.]

3. Products Materials

The contractor shall be responsible for providing all material necessary to complete the parking lot repair. The contractor shall be responsible for accurately measuring the quantity of material required for the entire project. Quantities identified herein are estimates. The County does not guarantee a specific amount of work under the contract. The contractor shall not impose minimum or total order quantities.

Bituminous Aggregate

Aggregates shall consist of clean, sound durable particles of crushed limestone meeting the requirements of PENNDOT PUB 408 SUPERPAVE.

Bituminous Surface Treatment

Bituminous surface treatment shall meet the requirements PENNDOT PUB 408

SUPERPAVE.

Bituminous tack coat

Bituminous tack coat shall conform to PENNDOT PUB 408. Apply tack coat at the locations shown on the drawings. A tack coat should be applied to every bound surface (asphalt or concrete pavement) that is being overlaid with asphalt mixture and at transverse and longitudinal joints. Apply the tack coat when the surface to be treated is clean and dry. Immediately following the preparation of the surface for treatment, apply the bituminous material by means of the bituminous distributor, within the limits of temperature specified herein. Apply the bituminous material so that uniform distribution is obtained over the entire surface to be treated. Treat lightly coated areas and spots missed by the distributor by spraying with a hand wand or using other approved method. Following the application of bituminous material, allow the surface to cure without being disturbed for period of time necessary to permit setting of the tack coat.

Apply the bituminous tack coat only as far in advance of the placing of the overlying layer as required for that day’s operation. Maintain and protect the treated surface from damage until the succeeding course of pavement is placed.

3.4.1. Cold Weather Installation

The tack coat shall be applied only when the underlying surface is dry enough to promote uniform coverage and the desired penetration into the treated surface. The tack coat shall be applied only when the atmospheric temperature in the shade is 50 degrees F or above and when the temperature has not been below 35 degrees F for the 12 hours prior to the application. Unless otherwise directed, bituminous surface treatment shall not be constructed when temperature of the pavement surface is below 40 degrees F.

Equipment

All plant, equipment, and tools used in the work shall be subject to approval before the work is started and shall be maintained in satisfactory working condition at all times.

The equipment shall be adequate and have the capability of meeting grade controls, thickness control, and smoothness requirements specified herein. The asphalt plant shall be of such capacity to produce the quantities of bituminous asphalt required.

Hauling equipment, paving machines, rollers, miscellaneous equipment, and tools shall be provided in sufficient numbers and capacity and in proper working condition to place the asphalt concrete paving mixtures at a rate which will support the requirements governed by the project. The mixing plant shall be an automatic or semi-automatic controlled commercially manufactured unit designed and operated to consistently produce a mixture within the material requirements specified herein.

4. Execution Preparation

4.1.1. Cracks

Clean cracks in eastern parking lot area to clear vegetation and debris by use of a power broom and compressed air jet of not less than 90 psi. Seal with emulsified asphalt slurry level with the existing pavement. Make two passes if necessary to fill void.

Length not to exceed 200 lf. Exact locations to be coordinated with the ACO prior to filling. No other paving work is required in the eastern parking lot.

4.1.2. Milling

Mill and dispose of existing bituminous surfacing material within western parking lot area to accommodate 2” new wearing course and pavement transitions. Dispose of material offsite. Dispose material in accordance with Federal, State, and Local regulations. Provide documentation that material was properly disposed of.

4.1.3. Full Depth Repair

Remove surface pavement and base course as indicated. Make cut square or rectangular with vertical straight faces. Make one pair of faces at right angles to traffic flow. Spray vertical surfaces with emulsified asphalt. Remove and dispose of asphalt and base material 12” below finished top of pavement in 10’ x 60’ area of western parking lot to accommodate full depth repair. See plans (attached) for details.

4.1.4 Regrade Northern Road

Remove and dispose of existing northern road material as necessary to accommodate new road material placement and drainage considerations. Dispose material in accordance with Federal, State, and Local regulations. Provide documentation that material was properly disposed of.

4.1.5 Unsuitable Base Material

Remove and dispose of unsuitable base material within site preparation area. Area of unsuitable base prepare subgrade and base per PA DOT Pub 408. Dispose material in accordance with Federal, State, and Local regulations. Provide documentation that material was properly disposed of.

Surface Preparation

Immediately before applying the hot mixed asphalt, remove all loose material, dirt, clay, or other objectionable material from the surface to be treated by means of a power broom or blower supplemented with hand brooms. Apply treatment only when the surface is dry and clean.

Tack Coat

Spray area to receive tack coat with asphalt cement at rate of 0.22-0.29 gallon per square yard. Keep newly placed binder areas shall be free of traffic and debris until asphalt overlay is complete. Apply tack-coat along interface of new asphalt with all existing concrete and asphalt; also tack-coat the top of binder course prior to placement of wearing course. See plans (attached) for details.

Base Course

4.4.1. Place and compact, 6” gravel base course (PA DOT 2A) as needed on roadway to ensure positive drainage away from the building and to meet pavement transitions. Compact each layer of the base course, as specified, with approved compaction equipment. Maintain water content during the compaction procedure to within plus or minus 2 percent of the optimum water content determined from laboratory tests as specified in this Section. Begin rolling at the outside edge of the surface and proceed to the center, overlapping on successive trips at least one-half the width of the roller. Slightly vary the length of alternate trips of the roller. Adjust speed of the roller as needed so that displacement of the aggregate does not occur.

Compact mixture with hand-operated power tampers in all places not accessible to the rollers. Continue compaction until each layer is compacted through the full depth to at least 95 percent of laboratory maximum density. See plans (attached) for details.

Transporting and Placing Asphalt

4.5.1. Transporting

Transport the hot-mix asphalt from the mixing plant to the site in clean, tight vehicles.

Schedule deliveries so that placing and compacting of mixture is uniform with minimum stopping and starting of the paver. Hauling over freshly placed material will not be permitted until the material has been compacted as specified, and allowed to cool to 140 degrees F. To deliver mix to the paver, use a material transfer vehicle operated to produce continuous forward motion of the paver.

4.5.2. Placing

Place and compact the mix at a temperature suitable for obtaining density, surface smoothness, and other specified requirements. Upon arrival, place the mixture to the full width by an asphalt paver; it shall be struck off in a uniform layer of such depth that, when the work is completed, it will have the required thickness and conform to the grade and contour indicated. Regulate the speed of the paver to eliminate pulling and tearing of the asphalt mat. Unless otherwise permitted, placement of the mixture shall begin along the centerline of a crowned section or on the high side of areas with a one-way slope. Place the mixture in consecutive adjacent strips having a minimum width of 10 feet. The longitudinal joint in one course shall offset the longitudinal joint in the course immediately below by at least 1 foot; however, the joint in the surface course shall be at the centerline of the pavement. Transverse joints in one course shall be offset by at least 10 feet from transverse joints in the previous course. Transverse joints in adjacent lanes shall be offset a minimum of 10 feet. On isolated areas where irregularities or unavoidable obstacles make the use of mechanical spreading and finishing equipment impractical, the mixture may be spread by hand tools. See plans (attached) for pavement thicknesses and other details.

4.5.3 Bituminous Tack Coat

All areas that are to receive the bituminous surface treatment overlay, and pavement transitions shall be sprayed with a bituminous tack coat. Immediately before applying the bituminous tack coat, remove all loose material from the surface to be treated by means of a power broom or blower. The surface shall be dry and clean at the time of treatment. The tack coat shall be applied uniformly at an application rate of not less than

0.05 gallons per square yard of pavement interface or surface.

4.5.4 Bituminous Binder Course

The entrance drive shall receive a 4” overlay of bituminous binder course as indicated.

Prior to the overlay, the base and subbase shall be free from deleterious materials. No water shall be present prior to placement of overlay. Bituminous binder course shall be placed in accordance with the applicable requirements of PA DOT Pub 408. The bituminous base shall be applied in a manner so that uniform distribution is obtained over all the areas treated. Compaction and rolling equipment shall follow as closely behind the paving machine as possible. Areas inaccessible to rollers shall be compacted by mechanical vibratory tampers. Compaction shall continue until no marks or tracks are left from the compaction or rolling equipment. The bituminous binder shall be constructed in two compacted lifts equal to a minimum of 2 inches in thickness. The Contractor shall be responsible for any shoulder or transition from the new bituminous surface treatment to the existing grade. Any areas that result in an earthen grade of greater than 1:3 be transitioned with topsoil, seeded, and mulched. Unless otherwise directed, the bituminous binder shall not be placed when temperature of the surface of the existing pavement is below 40 degrees F. See plans (attached) for pavement thicknesses and other details. Paving mixture shall be compacted to the density identified in the contractors mix design according to procedures in PennDOT PUB 408 Superpave mix design.

4.5.5 Bituminous Wear Course

The entrance drive and the parking lot shall receive a 2” overlay of bituminous surface treatment as indicated. Prior to the overlay, the existing asphalt shall be cleaned from dirt and debris and be coated with a bituminous tack coat as described above. No water shall be present prior to placement of overlay. Bituminous surface treatment shall be placed in accordance with the applicable requirements of PennDOT Pub 408. The bituminous overlay shall be applied in a manner so that uniform distribution is obtained over all the areas treated. Compaction and rolling equipment shall follow as closely behind the paving machine as possible. Areas inaccessible to rollers shall be compacted by mechanical vibratory tampers. Compaction shall continue until no marks or tracks are left from the compaction or rolling equipment. The bituminous surface treatment shall be constructed in one compacted lift equal to a minimum of 2 inches in thickness. The Contractor shall be responsible for any shoulder or transition from the new bituminous surface treatment to the existing grade. Any areas that result in an earthen grade of greater than 1:3 be transitioned with topsoil, seeded, and mulched.

Unless otherwise directed, the bituminous surface treatment overlay shall not be placed when temperature of the surface of the existing pavement is below 40 degrees F. See plans (attached) for pavement thicknesses and other details. Paving mixture shall be compacted to the density identified in the contractors mix design according to procedures in PennDOT PUB 408 Superpave mix design.

4.5.6 Thickness Control

As the bituminous surface treatment is placed, the Contractor shall monitor the thickness to verify conformance with the design thicknesses. The thickness of the asphalt concrete wearing course shall be measured at intervals of no less than 25 linear feet along the centerline of the roadway or parking lot. The total measured thickness of the overlay shall be within +/- ¼-inch of their total combined design thickness. The overlay areas that do not comply with the minimum thickness shall be removed and replaced by the Contractor. Such areas shall be corrected by removing the bituminous surface treatment to its full thickness and placing and compacting additional new overlay to the proper design thicknesses. No additional payment will be made for areas that receive additional thickness of bituminous surface treatment.

4.5.7 Existing Paving Interface

Where the new bituminous surface treatment pavement meets the existing pavement a straight, smooth joint shall be constructed. The surfaces of the existing pavement at the interface shall be cleaned of all loose material and dirt and painted with a suitable asphalt joint sealant material conforming to ASTM D 3381, AC-20. Joints between old and new pavement shall be made in accordance with the applicable requirements of PennDOT Pub 408 specifications. The hot-applied asphalt sealant shall be applied along each joint between the new and existing pavement sections for a minimum width of six inches on each side of the joint.

4.6 Compaction of Mixture

After placing, the mixture shall be thoroughly and uniformly compacted by rolling.

Compact the surface as soon as possible without causing displacement, cracking or shoving. The sequence of rolling operations and the type of rollers used shall be at the discretion of the Contractor. The speed of the roller shall, at all times, be sufficiently slow to avoid displacement of the hot mixture and be effective in compaction.