Attachment A_Special Provisions.pdf

Attachment A

Contract Documents for Oregon Department of Aviation

Toledo Apron Reconstruction

Special Provisions

June 2022

Owner:

Oregon Department of Aviation

3040 25th St. SE

Salem, OR 97302

Engineer:

Century West Engineering

1020 SW Emkay Drive, Suite 100

Bend, OR 97702

Phone: 541.322.8962

June 2022 Century West Engineering

2021 OREGON STANDARD SPECIFICATIONS FOR CONSTRUCTION: The 2021 Oregon Standard

Specifications for Construction (“Standard Specifications”) include detailed technical specifications

(“Technical Specifications”) that apply to this ITB and resulting Contract. Some sections of the

Technical Specifications are identified and modified in the Special Provisions below. Sections of the

Technical Specifications not identified in the Special Provisions remain applicable to the Contract according to their original terms. Unless they are identified in the Plans or Special Provisions, sections of the Standard Specifications in Part 00100 (General Conditions) are not applicable to the

Contract; however, if a Technical Specification (Parts 00200 and beyond) references a section from

Part 00100, that section from Part 00100 applies to the Contract for purposes of supporting and giving full effect to the technical specification. The Standard Specifications are available online: https://www.oregon.gov/odot/Business/Pages/Standard_Specifications.aspx

Table of Contents

SECTION 00210 - MOBILIZATION ________________________________________________ 1

SECTION 00229 – AIRPORT SAFETY ______________________________________________ 1

SECTION 00230 - GENERAL REQUIREMENTS _______________________________________ 3

SECTION 00280 - EROSION AND SEDIMENT CONTROL _______________________________ 9

SECTION 00305 - CONSTRUCTION SURVEY WORK __________________________________ 9

SECTION 00330 - EARTHWORK ________________________________________________ 10

SECTION 00331 – SUBGRADE STABILIZATION _____________________________________ 10

SECTION 00405 - TRENCH EXCAVATION, BEDDING, AND BACKFILL ____________________ 10

SECTION 00445 – SANITARY, STORM, CULVERT, SIPHON, AND IRRIGATION PIPE ________ 11

SECTION 00641 - AGGREGATE SUBBASE, BASE AND SHOULDERS _____________________ 11

SECTION 00744 - ASPHALT CONCRETE PAVEMENT _________________________________ 11

ITEM P-620 – RUNWAY AND TAXIWAY MARKINGS ________________________________ 12

SECTION 01030 - SEEDING ____________________________________________________ 16

SECTION 02320 – GEOSYNTHETICS _____________________________________________ 17

SECTION 02630 – BASE AGGREGATE ____________________________________________ 17

SECTION 03020 – EROSION MATERIALS _________________________________________ 17

Contract Documents | June 2022 | Page 1 Century West Engineering

SECTION 00210 - MOBILIZATION

Comply with Section 00210 of the Standard Specifications.

SECTION 00229 – AIRPORT SAFETY

Section 00229, which is a not a Standard Specification, is included in this Project by Special

Provision.

00229.10 Description - This specification outlines safety procedures and regulations to be followed by the Contractor during the course of this work. All work shall be in conformance with FAA

Northwest Mountain Region NM 5200.3 “Safety Requirements on Airports During Construction and

Maintenance Activities”, FAA Advisory Circular 150/5370-2G “Operational Safety on Airports During

Construction”, and the “Manual of Uniform Traffic Control”.

In order to protect air traffic from construction traffic, barricades (low-level or tubular markers) shall be placed at the locations shown on the plans and as directed by the Engineer.

00229.20 General Requirements - The Contractor shall keep personnel and equipment off of the runway, runway sides, runway ends, taxiways, taxiway sides and aprons as described below.

00229.30 Construction Sequence - Construction activity shall not commence prior to issuance of a

Notice to Airmen (NOTAM). The Contractor shall advise the Engineer seven (7) days in advance of the planned commencement of construction activity so a NOTAM can be issued by the owner and shall not commence such activity until advised by the Engineer. Upon completion of work to the satisfaction of the Engineer, a NOTAM indicating completion will be issued.

00229.40 General Safety Requirements

The Contractor’s operations shall be limited to the staging area, the work boundaries shown on the plans and approved haul roads.

During daytime construction operations on the airfield, each vehicle shall be equipped with signage and FAA approved orange and white-checkered flags or an omnidirectional amber flashing light mounted on the roof of the cab. These shall be provided by the Contractor on all vehicles and equipment.

Normally, work will be permitted on the airfield during daylight hours only. If an emergency situation requires work at night, the Contractor shall notify the Engineer as far in advance as possible and obtain clearance from the engineer before proceeding to work.

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During nighttime construction operations on the airfield, each vehicle shall be equipped with an omnidirectional amber flashing light mounted on the roof of the cab. Headlights, taillights and flashers shall be used for all activities during nighttime hours.

The contractor shall provide adequate portable lights at the areas of nighttime work.

Sufficient lights shall be provided to complete the work to the specified tolerances. Portable light plants shall have at least four working metal halon 1000 watt bulbs or 245,000 lumen output, each mounted on a mast at least 25’ high, or as approved by the Engineer.

Construction equipment that extends 10 feet or more above ground level shall be cleared through the Engineer. It shall be lighted at night in an approved manner and/or lowered to height of adjacent structural surroundings at the discretion of the Engineer.

Welding equipment shall not be used within 100 feet of fuel trucks or aircraft.

In the event of an airfield emergency, men and equipment shall be moved immediately at the direction of the Engineer.

The Contractor shall be responsible for, at all times, insuring that active runways and taxiways are kept free of construction debris, equipment, and/or materials that might endanger or be ingested by an aircraft.

00229.50 Airport Radios – Airport radios shall be VHF Air Band Transceivers, as manufactured by

ICOM, Model IC-A16 or IC-A25. Radios shall be supplied with a compatible wall charge unit, and a vehicle “cigarette lighter” style plug in charger. The contractor shall provide two (2) radios for use on the project.

The contractor shall designate one lead person to monitor and communicate with the Air Traffic and Airport Operations Staff at all times during construction operations. The person shall be familiar with construction vehicular movements, operations and airport layout. The contractor shall allow time for proper training of airport radio communications with the Owner prior to the start of construction.

00229.80 Measurement – No measurement of quantities will be made for work under this sections.

00229.90 Payment – Payment for Airport Safety will be considered incidental to all other work.

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SECTION 00230 - GENERAL REQUIREMENTS

Section 00230, which is not a Standard Specification, is included in this Project by Special

Provision.

General Scope

00230.00 Location and Plans - The project site is the Toledo State Airport, located approximately

1.5 miles south of Toledo, Oregon. For the purpose of this contract, the terms Airport and Owner are considered the same.

The contract plans for this project contain 15 sheets titled “Toledo State Airport Apron

Reconstruction”.

00230.01 Airport Security - During the course of the contract, the Contractor shall be responsible for maintaining security against unauthorized access to the Airport. The Contractor will be held responsible for any fines, damages, or civil penalties filed against the Oregon Department of

Aviation and the Toledo State Airport for the Contractor's failure to maintain the regulations set forth herein.

The Contractor shall be fully responsible for compliance of all employees with the Airport security program and following regulations and orders of the Airport management. These regulations may affect identification requirements of employees and subcontractors, movement around the

Airport, parking, entry, and other circumstances affecting the safety or protection of persons or property. The security requirements are subject to change at any time during the project without prior notice.

For the intent and purpose of these regulations, Air Operations Area (AOA) is construed to mean any area used or intended to be used for takeoff, landing, or surface maneuvering of aircraft, and all other areas restricted to public access on the field. Work boundaries within the Air Operations

Area shall be established as shown on the drawings. Only Contractor's employees are permitted in the work sites.

Deliveries to work sites will be controlled by the Contractor. The Contractor shall account for

Airport-issued keys in a manner approved by the Airport.

Within the Air Operations Area, all equipment, vehicles, and personnel travel shall be restricted to designated work sites.

Only vehicles used for construction purposes shall enter the Air Operations Area. Contractor personnel shall park their personal vehicles within a designated staging area.

Contractor vehicles/equipment shall be marked with company identification (on both sides of the vehicle/equipment) and a flashing yellow beacon or an Engineer-approved orange and white checkered flag (must be visible from 300 feet) while operating within the airport boundary.

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During night operations, each vehicle entering the Air Operations Area shall be equipped with a yellow flashing light mounted on the roof of the cab. Headlights, taillights, and flashers shall be used for all activities during these hours.

In the event of an emergency, personnel and equipment shall move immediately to the staging area.

00230.02 Layout of the Work. The Contractor will do all the construction surveying on the project. The Engineer will provide vertical and horizontal reference control points in the proximity of the work.

00230.03 Completion Time. All items of contract work shall be substantially complete with in the time period specified in the Contract.

00230.04 Environmental Codes and Regulations. The Contractor shall comply with provisions of

Federal, State and local statutes, ordinances and regulations dealing with the prevention of environmental pollution and the preservation of natural resources that affect the project.

If the Contractor must undertake additional work due to the enactment of new or the amendment of existing statutes, ordinances and regulations dealing with the prevention of the successful bid, the Airport will issue a supplemental agreement setting forth the additional work that must be undertaken. The supplemental agreement shall not invalidate the contract and there shall be, in addition to a reasonable extension of contract time, if necessary, a reasonable adjustment in the contract price to compensate the successful bidder for all costs and expenses incurred, including overhead and profits, as a result of the additional work.

00230.05 Special Permits. The Contractor shall pay for, and obtain, any and all permits required for construction of the work. Permits may include, but are not limited to, the following:

1. Grading permit;

2. Environmental permit;

3. Other permits as required.

00230.06 Inspection and Testing. All tests called for in the specifications or deemed necessary by the Engineer will be performed by the Contractor, except when indicated otherwise in the specifications. The Contractor will perform quality assurance testing in the presence of the

Engineer when, in the opinion of the Contractor, the work area to be tested is prepared and will meet the required specifications. Contractor shall schedule testing at least 48 hours in advance of when he is ready for the test. Bituminous surface course testing shall be scheduled a minimum of

14 days in advance of beginning paving. In the event test results do not meet the specifications, any cost for re-testing as may be required by the Engineer shall be at the Contractor's expense, charged at the rate established in the Engineer's standard fee schedule.

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00230.07 Contractor's Staging Area. An area will be set aside on Airport property for the

Contractor's use as a staging area for personnel, equipment, and materials. The Contractor shall obtain all necessary building permits and operating licenses from local governmental agencies. The

Engineer will define the actual location in the field. The Contractor may install a security fence. The staging area shall be restored to its original condition at the conclusion of the work. Contractor staging areas and staging area access width, length, depth and material improvements to be determined by the contractor. Contractor shall protect all utilities.

00230.08 Disposal of Waste Material. Earthen material that is acceptable for construction of embankments/fills for the project, and approved by the Engineer, shall be placed in locations as designated by the Engineer or as shown on the plans. Other/Excess, waste earthen material, unsuitable material, strippings, sod, and vegetation/organic material from clearing and grubbing or excavation shall be disposed of off-site at the Contractor's expense.

Concrete and other debris shall be disposed of offsite.

Disposal of waste materials shall be in accordance with governing agency safety, health, and other requirements.

00230.09 Site Investigation and Representation. The Contractor acknowledges familiarity as to the nature and location of the work, the general and local conditions, particularly those bearing upon availability of transportation, disposal, handling and storage of materials, availability of labor, water, electric power, roads, and uncertainties of weather, or similar physical conditions at the site, the conformation and conditions of the ground, the character of equipment and facilities needed preliminary to and during the prosecution of the work and all other matters which can in any way affect the work or the cost thereof under this contract.

The Contractor further acknowledges understanding of the character, quality, and quantity of surface and subsurface materials to be encountered from inspecting the site.

The Contractor warrants that as a result of the examination and investigation of all the aforesaid data that he can perform the work in a good and workmanlike manner and to the satisfaction of the Airport. The Airport assumes no responsibility for any representations made by any of its officers or agents during or prior to the execution of this contract, unless (1) such representations are expressly stated in the contract, and (2) the contract expressly provides that the responsibility therefore is assumed by the Airport. Representations for which liability is not expressly assumed by the Airport in the contract shall be deemed only for the information of the Contractor.

00230.10 Information on Site Conditions. All information obtained by the Airport regarding site conditions, subsurface information, ground water elevations, existing construction of site facilities as applicable, and similar data will be available for inspection upon request. Such information is offered as supplementary information only. The Airport does not assume any responsibility for the completeness or interpretation of such supplementary information.

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00230.11 Subsurface and Site Information. Information derived from inspection of test results, of topographic maps, or from plans showing location of utilities and structures will not in any way relieve the Contractor from any risk, or from properly examining the site and making such additional investigations as he may elect, or from properly fulfilling all the terms of the contract documents.

The submission of a bid shall be conclusive evidence that the Bidder has investigated and is satisfied as to the conditions to be encountered, as to the character, quality, and quantities of work to be performed and materials to be furnished, and as to the requirements of the contract documents.

00230.12 Underground Utilities. Known utilities and structures expected to be adjacent to or encountered in the work are shown on the plans. It is expected that there may be some discrepancies and omissions in the locations and quantities of utilities and structures shown. Those shown are for the convenience of the Contractor only, and no responsibility is assumed by the

Airport for their accuracy or completeness.

00230.13 Fire Prevention and Protection. The Contractor shall perform all work in a fire-safe manner. The Contractor shall comply with applicable local and State fire prevention regulations.

00230.14 Temporary Water. No potable water supply is immediately available at the designated

Contractor's staging area. The Contractor shall make arrangements for obtaining water and pay all costs for same.

00230.15 Temporary Electric Power. No electric power is immediately available at the designated

Contractor's staging area. The Contractor shall make arrangements for electric power for use during the construction period until final acceptance by the Airport, and pay all costs for same.

00230.16 Sanitary Facilities. The Contractor shall provide and maintain sanitary facilities for employees and subcontractor's employees that will comply with the regulations of the local and

State departments of health and as directed by the Engineer.

General Construction Responsibilities and Procedures

00230.20 Site Restoration and Cleanup. Upon completion of the project, all areas used by the

Contractor in connection with the work shall be properly cleared of all temporary structures, rubbish, and waste materials and properly graded to drain and blend in with the abutting property.

00230.21 Haul Routes and Maintenance. The Contractor shall abide by prevailing legal load limit regulations when hauling over airfield pavements or public roads. The Contractor shall perform all necessary maintenance of haul routes during construction and shall perform all work necessary to restore the routes used by all his equipment to their original condition, or as identified on the

Contract Documents | June 2022 | Page 7 Century West Engineering plans, at the conclusion of construction. New construction haul roads shall be obliterated and original vegetation re-established. Existing roadways, runways, and taxiways shall be regraded as necessary to restore them.

Unsurfaced haul roads shall be sprayed with water as necessary to prevent dust diffusion during the course of the work.

All maintenance and restoration work, as shown on the plans or directed by the Engineer, shall be completed to the Engineer's satisfaction before final payment is awarded. Payment will be made under “Contractor’s Staging Area and Restoration.”

00230.22 Responsibility for Damage to Existing Structures. Where any existing structures or facilities which are intended to remain are damaged by the Contractor during demolition or construction, the Contractor shall promptly repair or replace the damaged portion or facility at no additional cost to the Airport.

00230.23 Storage of Materials. Materials shall be so stored as to insure the preservation of their quality and fitness of the work. When considered necessary, they shall be placed on wooden platforms or other hard, clean surfaces, and not on the ground, and/or they shall be placed under cover. Stored materials shall be located so as to facilitate prompt inspection. Private property shall not be used for storage purposes without the written permission of the Airport or lessee.

00230.24 Cleanup. The Contractor shall at all times during the work keep the premises clean and orderly, and shall promptly remove all waste materials and rubbish. All directions from the

Engineer and other authorized public officials having jurisdiction over health and safety shall be obeyed. Areas to be opened up to aircraft operations shall be swept thoroughly clean with power broom equipment. Any debris resisting sweeping shall be removed by hand labor or other suitable means.

Upon completion of the work, all materials, equipment, and appurtenances not required, as a part of, or appurtenant to, the completed structure or facility shall be completely removed from the

Airport property.

Work Progress Schedule

00230.30 Scope. The work specified in this subsection includes planning, scheduling, and reporting that is required to be performed by the Contractor.

00230.31 Preconstruction Conference. A preconstruction conference will be held at the Airport before Notice to Proceed is issued. The conference shall be attended at a minimum by the

Contractor’s project manager and superintendent, and representatives of all subcontracting firms that will provide five percent (5%) or more of the total value of the project. A copy of the

Contractor’s anticipated construction schedule shall be submitted to the Engineer at least 5 days

Contract Documents | June 2022 | Page 8 Century West Engineering prior to the preconstruction conference. The Contractor shall be prepared to discuss details of how construction will progress, how they expect to conduct their operations, and discuss operational and safety requirements associated with the work.

00230.32 Coordination Meetings. Coordination meetings will be held on a weekly basis or more often if necessary, to communicate work efforts between the Engineer, the Airport and the

Contractor. The Resident Engineer will schedule the meetings with attendance required by at least one person from each organization.

00230.33 Method. An overall project critical path schedule and supplemental weekly “look ahead” schedules, shall be submitted to the Engineer for review in accordance with the Special

Provisions. Provide revised schedules and updated schedules at any time requested by the

Engineer.

00230.34 Schedule Requirements. Distinct items of contract work shall be defined and separated on the schedule. As a minimum, the work items shall include each contract pay item, mobilization, demobilization, and cleanup. Pay items that are partially subcontracted shall be split up to distinctly show the subcontracted work. These items of work shall be plotted on a graph with calendar day duration as a horizontal reference. Anticipated start and finish dates for each work stage and for each of the work items within a stage, shall be shown.

The project name, the Contractor's name, and the date of the schedule submittal shall be clearly shown on the submittal.

00230.35 Progress Reports. At the end of each week, the Contractor shall submit a summary report of the progress of the various scheduled work items stating, for each item, the existing time status, estimated time of completion, and cause of delays, if any. If the work is behind the previously submitted schedule, the Contractor shall submit an updated schedule and a written plan acceptable to the Engineer for bringing the work up to schedule.

Updated schedules will be used by Engineer in compiling partial payments and no such computations will be made until the reports have been received and approved by the Engineer.

The Engineer may request reports to be made on a more frequent schedule if he considers the substantial completion date to be in jeopardy because of activities behind schedule or for other valid reasons.

Measurement and Payment

00230.40 Measurement and Payment - Measurement and payment for the Contractor’s Staging

Area and Restoration shall be per lump sum and include restoration of the access, and staging area; protection of all utilities; and this price shall be full compensation for furnishing all materials;

Contract Documents | June 2022 | Page 9 Century West Engineering for all preparation, hauling, and placing of these materials; and for all labor, equipment, tools, and incidentals necessary to complete the item.

Measurement and payment for other specific items will be as listed in the Bid Pricing Form. Items not listed in the Bid Pricing Form are considered incidental to applicable bid items.

SECTION 00280 - EROSION AND SEDIMENT CONTROL

Comply with Section 00280 of the Standard Specifications modified as follows:

00280.06 Erosion and Sediment Control Manager - Add the following:

ESCM to perform all permit inspections with proper certification(s).

00280.16(g) Temporary Energy Dissipator – Replace the word “temporary” with permanent.”

00280.46(g) Temporary Energy Dissipator – Replace the word “temporary” with permanent.”

00280.90 Payment – Add the following bullets to Item (a) description:

Re-grading and seeding of roadside ditches and all non-lawn seeded areas per Method D of

Section 01040 – Planting

00280.91 Payment(m) – Replace the word “temporary” with permanent” and add the following:

Payment for permanent energy dissipator shall be incidental to 4-Inch and 6-Inch C900 Pipe in

Section 00445. No separate or additional payment will be made.

SECTION 00305 - CONSTRUCTION SURVEY WORK

Comply with Section 00305 of the Standard Specifications.

SECTION 00310 - REMOVAL OF STRUCTURES AND OBSTRUCTIONS

Comply with Section 00310 of the Standard Specifications modified as follows:

00310.41(d) Materials Within Construction Area – Add the following paragraph:

(4) Tie-Down Anchors – Remove tie-down anchors.

00310.43 Disposal of Materials – Delete paragraph and replace with the following:

Dispose of materials according to 00290.20(c)(3)f.

00310.90 Payment – Add the following paragraph:

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Tie-down anchor removal and disposal is incidental to the Work.

SECTION 00330 - EARTHWORK

Comply with Section 00330 of the Standard Specifications modified as follows:

00330.02 Definitions – Add

Stripping – All excavation to remove vegetation, topsoil, and root materials to a depth of 6 inches.

00330.41(a)(3) Unsuitable Materials – Replace the entire paragraph with the following:

Unsuitable and stripped materials encountered in required excavations shall be classed as waste material and disposed of according to 00330.41(a)(5).

00330.91(d) General Excavation – Add the following bullet to the end:

• Includes Stripped Materials to a depth of 6 inches limited to the lines, grades, and Cross

Sections shown or established. To remove vegetative materials for preparation and stabilization of areas below embankments.

00330.93 Excavation Basis Payment – Add the following to the end of the section:

Excess earthen material shall be disposed of offsite.

SECTION 00331 – SUBGRADE STABILIZATION

Comply with Section 00331 of the Standard Specifications modified as follows.

00331.41(a) Geotextile – Replace the entire paragraph with the following:

Place geotextile at the direction of the Engineer per manufacturer's recommendations.

SECTION 00405 - TRENCH EXCAVATION, BEDDING, AND BACKFILL

Comply with Section 00405 of the Standard Specifications modified as follows:

00405.90 Payment – Replace entire paragraph with the following:

Payment for trench excavation, bedding, and backfill shall be incidental to 4-Inch C900 Pipe bid item in Section 00445. No separate or additional payment will be made.

Payment for trench excavation, bedding, and backfill shall be incidental to 6-Inch C900 Pipe bid item in Section 00445. No separate or additional payment will be made.

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SECTION 00445 – SANITARY, STORM, CULVERT, SIPHON, AND IRRIGATION PIPE

Comply with Section 00445 of the Standard Specifications modified as follows.

00445.91 Payment – Add to the end of this subsection:

4-Inch C900 Pipe

6-Inch C900 Pipe

SECTION 00641 - AGGREGATE SUBBASE, BASE AND SHOULDERS

Comply with Section 00641 of the Standard Specifications modified as follows:

00641.80 (b) Volume Basis – Replace entire paragraph with the following:

When measurement is by volume, quantities will be measured on a neat line basis.

00641.90 Payment – Add to the end of this subsection:

3/4-Inch Aggregate Base

SECTION 00744 - ASPHALT CONCRETE PAVEMENT

Comply with Section 00744 of the Standard Specifications modified as follows:

00744.11(a) Asphalt Cement - Add the following to the end of this subsection:

Provide __64-22_ grade asphalt cement for this Project.

00744.90 Payment – Add to the end of this subsection:

Level 3, ½-inch ACP Mixture

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ITEM P-620 – RUNWAY AND TAXIWAY MARKINGS

Item P-620, which is a not a Standard Specification, is included in this Project by Special Provision.

620-1.1 Description – This item shall consist of the preparation and painting of markings and stripes on the surface of runways, taxiways, and aprons, in accordance with these specifications and at the locations shown on the plans, or as directed by the Engineer. The terms “paint” and

“marking material” as well as “painting” and “application of markings” are interchangeable throughout this specification.

MATERIALS

620-2.1 Materials acceptance – The Contractor shall furnish manufacturer’s certified test reports for materials shipped to the project. The certified test reports shall include a statement that the materials meet the specification requirements. The reports can be used for material acceptance or the Engineer may perform verification testing. The reports shall not be interpreted as a basis for payment. The Contractor shall notify the Engineer upon arrival of a shipment of materials to the site. All material shall arrive in sealed containers 55 gallons or smaller for inspection by the

Engineer. Material shall not be loaded into the equipment until inspected by the Engineer.

620-2.2 Marking materials – Paint shall be waterborne in accordance with the requirements of paragraph 620-2.2.a. Paint shall be furnished in White – 37925, Red – 31136, Yellow - 33538 or

33655, Black – 37038, or Pink - 1 part Red - 31136 to 2 parts White – 37925, as shown on the plans, in accordance with Federal Standard No. 595. Submit manufacturer’s application guidelines and/or requirements for review and approval by the Engineer.

a. Waterborne. Paint shall meet the requirements of Federal Specification TT-P-1952E, Type I.

The non-volatile portion of the vehicle for all paint types shall be composed of a 100% acrylic polymer as determined by infrared spectral analysis.

620-2.3 Reflective media – Glass beads shall meet the requirements for Federal Specification TT-B-

1325D, Type I, gradation A or Type III. Glass beads shall be treated with all compatible coupling agents recommended by the manufacturers of the paint and reflective media to ensure adhesion and embedment.

CONSTRUCTION METHODS

620-3.1 Weather limitations – The painting shall be performed only when the surface is dry and when the surface temperature is at least 45°F and rising and the pavement surface temperature is at least 5°F above the dew point or meets the manufacturer’s recommendations. Markings shall not be applied when the pavement temperature is greater than 130°F. When pavement surface temperature is 55°F or less at the time of application, the contractor shall provide an acceptable temperature reference for review by the Engineer.

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620-3.2 Equipment – Equipment shall include the apparatus necessary to properly clean the existing surface, a mechanical marking machine, a bead dispensing machine, and such auxiliary hand-painting equipment as may be necessary to satisfactorily complete the job.

The mechanical marker shall be an atomizing spray-type or airless-type marking machine suitable for application of traffic paint. It shall produce an even and uniform film thickness at the required coverage and shall apply markings of uniform cross-sections and clear-cut edges without running or spattering and without over spray.

620-3.3 Preparation of surface – Immediately before application of the paint, the surface shall be dry and free from dirt, grease, oil, laitance, or other foreign material that would reduce the bond between the paint and the pavement. The area to be painted shall be cleaned by sweeping or blowing or by other methods as required to remove all contaminants minimizing damage to the pavement surface. Use of any chemicals or impact abrasives during surface preparation shall be approved in advance by the Engineer. The contractor shall verify the compatibility of the waterborne paint with any existing paint prior to application.

Paint shall not be applied to Portland cement concrete pavement until the areas to be painted are clean of curing material. Sandblasting or high-pressure water shall be used to remove curing materials.

Prior to the application of any markings, the Contractor shall certify in writing that the surface has been prepared in accordance with the paint manufacturer’s requirements, that the application equipment is appropriate for the type of marking paint and that environmental conditions are appropriate for the material being applied. This certification along with a copy of the paint manufacturer’s surface preparation and application requirements must be submitted and approved by the Engineer prior to the initial application of markings.

620-3.4 Layout of markings – The proposed markings shall be laid out in advance of the paint application. All final coats of paint shall include application of glass beads.

620-3.5 Application – Paint shall be applied at the location of previous paint application unless shown otherwise on the plans or directed otherwise by the Engineer. Paint shall not be applied until the layout and condition of the surface has been approved by the Engineer. Edges of all markings shall be crisp and well defined. When applying Hold Line markings, the contractor may be required to use a template or other method of masking to meet this requirement. The edges of the markings shall not vary from a straight line more than 1/2 inch (12 mm) in 50 feet (15 m), and marking dimensions and spacings shall be within the following tolerances:

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Dimension and Spacing Tolerance

36 inch or less ±1/2 inch greater than 36 inch to 6 feet ±1 inch greater than 6 feet to 60 feet ±2 inch greater than 60 feet ±3 inch

The paint shall be mixed in accordance with the manufacturer’s instructions and applied to the pavement with a marking machine at the rate shown in Table 1. The addition of thinner will not be permitted.

Apply the paint at the application rates shown in Table 1 as specified or directed. Application rates will be reviewed and verified prior to application of airfield markings. Prior to the initial application of markings, the Contractor shall certify in writing that they will comply with the paint manufacturer’s requirements for surface preparation. The contractor shall further certify that the application equipment to be used on the project is appropriate for the marking paint and that the contractor will also comply with the manufacturer’s requirements for application of the material in appropriate environmental conditions. This certification along with a copy of the paint manufacturer’s application and surface preparation requirements must be submitted to the

Engineer prior to the initial application of markings.

620-3.7 Test strip – Prior to the full application of airfield markings, the Contractor shall produce a test strip in the presence of the Engineer. The test strip shall include the application of a minimum of 5 gallons (4 liters) of paint and application of 35 lbs (15.9 kg) of Type I/50 lbs (22.7 kg) of Type III glass beads. The test strip shall be used to establish thickness/darkness standard for all markings. The test strip shall cover no more than the maximum area prescribed in Table 1 (e.g., for 5 gallons (19 liters) of waterborne paint shall cover no more than 575 square feet (53.4 m2).

The contractor may elect to waive this test strip requirement at their own risk and verify paint and bead application rates to the satisfaction of the engineer during full application. Restriping of any areas of painting not meeting the requirements of this specification will be performed at the contractor’s expense.

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Table 1. Application Rates For Paint And Glass Beads

Paint Type

Paint

Square feet per gallon, ft2/gal

Glass Beads, Type I, Gradation A

Pounds per gallon of paint-lb/gal

Glass Beads, Type III

Pounds per gallon of paint-lb/gal

Waterborne Type I 115 ft2/gal max 7 lb/gal min 10 lb/gal min

Note: Type III beads shall not be applied to Red or Pink paint.

Glass beads shall be distributed upon the marked areas immediately after application of the paint.

Glass beads are not required on the initial coat of paint if a second and final coat of paint is called for. A dispenser shall be furnished that is properly designed for attachment to the marking machine and suitable for dispensing glass beads. Glass beads shall be applied at the rate shown in

Table 1. Glass beads shall not be applied to black paint or green paint. Glass beads shall adhere to the cured paint or all marking operations shall cease until corrections are made. Different bead types shall not be mixed. Regular monitoring of glass bead embedment should be performed.

All emptied containers shall be returned to the paint storage area for checking by the Engineer.

The containers shall not be removed from the airport or destroyed until authorized by the

Engineer.

Paint applied over areas of pavement distress repair such as crack seal and wide crack repairs shall be checked after application of final coat of paint for any changes in surface color. Any

“browning” of markings shall be repaired by applying an additional coat of paint at a maximum of

25 percent of the application rates shown above in Table 1.

620-3.8 Protection and cleanup – After application of the markings, all markings shall be protected from damage until dry. All surfaces shall be protected from excess moisture and/or rain and from disfiguration by spatter, splashes, spillage, or drippings. The Contractor shall remove from the work area all debris, waste, loose or unadhered reflective media, and by-products generated by the surface preparation and application operations to the satisfaction of the

Engineer. The Contractor shall dispose of these wastes in strict compliance with all applicable state, local, and Federal environmental statutes and regulations. All glass beads remaining on pavement surfaces shall be considered FOD and removed prior to re-opening pavement to traffic.

METHOD OF MEASUREMENT

620-4.1 The quantity of runway and taxiway markings to be paid for shall be the number of square feet of painting performed in accordance with the specifications and accepted by the Engineer.

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BASIS OF PAYMENT

620-5.1 Payment shall be made at the respective contract price per square foot for runway and taxiway painting. This price shall be full compensation for furnishing all materials and for all labor, equipment, tools, and incidentals necessary to complete the item.

Payment will be made under:

Item P-620-5.1-1 Pavement Marking - per square foot

SECTION 01030 - SEEDING

Comply with Section 01030 of the Standard Specifications modified as follows:

01030.13(f) Types of Seed Mixes - Add the following to the end of this subsection:

Provide the following seed mix formulas:

Permanent Seeding: Mix #2

Name PLS ÷ (% Purity x % Germination) = Amount

(lb/acre) (minimum) (minimum) (lb/acre)

Fine Fescue** 26.7 ____ ____ ____

Perennial Ryegrass** 4.8 ____ ____ ____

Kentucky Bluegrass** 1.7 ____ ____ ____

Colonial Bentgrass** 3.15 ____ ____ ____

** Acceptable varieties (All of these varieties are trademarked):

Fine Fescues:

Creeping Red Fescue: Fortress, Ensylva

Chewings Fescue: Banner, Highlight, Koket, and Jamestown. Pennlawn and Cascade are acceptable only in Eastern Oregon.

Perennial Ryegrass:

Citation, Derby, Diplomat, Manhattan, Omega, Pennfine, Regal, and Yorktown II. Only

Manhattan and Pennfine are acceptable east of the Cascades.

Kentucky Bluegrass:

Adelphi, Baron, Ben-Sun, Birka, Bonnieblue, Fylking, Galaxy, Glade, Majestic, Merion, Monopoly, Primo, Sydsport, and Victa.

Colonial Bentgrass:

Highland, Astoria, Exeter, and Holfior.

Contract Documents | June 2022 | Page 17 Century West Engineering

Furnish straw mulch for all seeding, except hydromulch may be used under the following conditions:

Spring planting west of the Cascades between March 1 and May 15.

Slopes are steeper than 1V to 1.5H and longer than 16 feet.

Residential or commercial sites with low erosion potential such as sidewalk, median, or parking lot planter strips.

Projects that have variable slopes may include straw mulch and hydromulch when approved.

01030.90 Payment – Add the following:

Pay Item Unit of Measure

(d) Permanent Seeding, Mix No. 2……………….……….Square Yard

SECTION 02320 – GEOSYNTHETICS

Comply with Section 02320 of the Standard Specifications.

SECTION 02630 – BASE AGGREGATE

Comply with Section 02630 of the Standard Specifications.

SECTION 03020 – EROSION MATERIALS

Comply with Section 03020 of the Standard Specifications.