CONTRACT DOCUMENTS

FOR

OREGON DEPARTMENT OF AVIATION

MULINO STATE AIRPORT

HANGAR AND WATERLINE PROJECT

ATTACHMENT E – HANGAR AND WATERLINE PROJECT

CONSTRUCTION SAFETY AND PHASING PLAN

OWNER:

Oregon Department of Aviation

3040 25th St. SE Salem, OR 97302

ENGINEER:

Century West Engineering

5500 Meadows Rd., Suite 250

Lake Oswego, OR 97035

Phone: 503.419.2130

APRIL 2026

This Page Left Intentionally Blank

Mulino State Airport Hangar and Waterline Project

Construction Safety and Phasing Plan AIP No. 3-41-0072-019-2025

April 2026

Prepared for:

3040 25th Street SE

Salem, OR 97302

Prepared by:

5500 Meadows Road, Suite 250

Lake Oswego, OR 97035

OREGON DEPARTMENT OF AVIATION

Hangar and Waterline Project

40097.134.02 | April 2026 Century West Engineering

Table of Contents

Construction Safety and Phasing Plan

I. PURPOSE AND OBJECTIVE

II. RESPONSIBILITIES OF THE CONSTRUCTION CONTRACTOR

III. INTRODUCTION OF STAFF

IV. SCHEDULE AND SCOPE OF WORK

Schedule

Scope

V. SAFETY PLAN

Construction Safety and Phasing

40097.134.02 | April 2026 Century West Engineering

Appendices

Appendix A Construction Project Daily Safety Inspection Checklist

Appendix B Specification Sections 01160 and 01300

Appendix C Construction Safety and Phasing Plan

Appendix D Safety Plan Compliance Document

Appendix E Safety Plan Compliance Document Checklist

Appendix F Safety Plan Compliance Document Example

40097.134.02 | April 2026 | Page 1

Construction Safety and Phasing Plan

This Construction Safety and Phasing Plan (CSPP) has been prepared in general accordance with FAA Advisory Circulars (AC) 150/5300-13B, “Airport Design”; and 150/5370-2G, “Operational Safety on Airports during Construction” for the Hangar and Waterline Project at

Mulino State Airport in Mulino, Oregon.

I. PURPOSE AND OBJECTIVE

Aviation safety is the primary consideration at airports, especially during construction. The

Construction Safety and Phasing Plan (CSPP) is a tool used to ensure safety compliance when coordinating construction activities with airport operations. This document identifies aspects of the Mulino State Airport Project that pose a potential safety hazard to airport operations and outlines mitigation procedures for each hazard.

The following objectives must be met by the “Team” comprised of the Airport Manager; Oregon

Department of Aviation; the Engineering Design Consultant; the Prime Contractor; and various subconsultants, subcontractors, airport users, and airport tenants in order to maximize safety and minimize time and economic loss. These objectives include:

• maintaining the safety and integrity of operations on the airport,

• keeping the airport operational for all users to the greatest extent practical,

• minimizing delays for aircraft and construction operations, and

• maximizing airport operation and construction activity opportunities.

The “Team” must keep these objectives in mind when formulating work schedules and work activities affecting operations on the airport.

II. RESPONSIBILITIES OF THE CONSTRUCTION CONTRACTOR

The Contractor is responsible for supplementing and following the CSPP by way of the Safety

Plan Compliance Document (SPCD). See Appendix D for SPCD and Contractor requirements.

Contractor to attend required airport safety training by ODAV and pre-construction meeting for airport project specifics prior to construction.

Any modifications to the CSPP and SPCD will require review and approval from ODAV and FAA

Preliminary Timeline

Contractor submit revised CSPP and SPCD 1 Day

ODAV (Including Engineer) review 7 Days

Contractor revise CSPP 1 Day

FAA review 14 Days

40097.134.02 | April 2026 | Page 2

Contractor address FAA comments 2 Days

OE/AAA review (if needed) 30 Days

III. INTRODUCTION OF STAFF

Key staff associated with the safety and operational planning of the Project.

Jenna Pang Airport Engineer – FAA Seattle ADO (206)-231-4147

Anthony Beach Airport Manager – Oregon Department of Aviation (503)-378-2523

James Kirby, PE Senior Project Manager – Century West Engineering (503) 419-2130

Ryan Halvorson, PE Project Manager/EOR – Century West Engineering (503) 419-2130

IV. SCHEDULE AND SCOPE OF WORK

SCHEDULE.

Construction is anticipated to begin in summer of 2026 with an anticipated contract duration of

180 consecutive calendar days. The work will be performed in a single phase as described in

Section V of this document.

SCOPE.

The overall work includes the following:

1. Expansion of existing hangar building (8 new hangars) including slab foundation and new hangar.

2. Extend Taxilane east of hangar extension with new pavement section.

3. Extend asphalt pavement from face of hangar to Taxilane west and east of hangar extension.

4. Install new storm drainage conveyance system for hangar extension.

5. Install new storm drainage facility to infiltrate the 2-year, 24-hour, storm event and detain stormwater events 5-year through 100-year to pre-existing conditions.

6. Relocate existing electrical power to existing hangar for hangar extension and reconnect power to existing hangar.

7. Install Taxilane markings.

V. SAFETY PLAN

CONSTRUCTION SAFETY AND PHASING.

The items listed below follow the guidance of Chapter 2, Section 2, “Plan Requirements” and

Chapter 3, “Guidelines for Writing a CSPP” as provided in AC 150/5370-2G-Operational Safety on Airports during Construction.

40097.134.02 | April 2026 | Page 3

1. Coordination.

The Mulino State Airport Hangar and Waterline Project’s predesign, prebid, and preconstruction conferences will be used as opportunities to introduce the subject of airport operational safety during construction and to describe the elements of this CSPP and resulting SPCD.

a. Contractor Progress Meetings. Operational safety will be a standing agenda item for discussion during weekly progress meetings through duration of the project. The

Engineer/Inspector will have final authority for safety decisions on-site and is responsible for issuing stop-work orders.

b. Scope or Schedule Changes. Changes in the scope or duration of the project will be represented by revisions to the CSPP.

c. FAA-ATO Coordination. The contractor will work with the project representative during construction to assure that FAA Air Traffic Organization (ATO) will be coordinated with, and schedule, airway facility (including NAVAIDs) shutdowns and restarts. The FAA

ATO contact person will be the Western Service Center and can be reached at 1-206-

231-2420.

i. A closure of Runway 14-32 and Taxiway A will not be needed.

2. Phasing.

The project Construction Safety and Phasing Plan provided in Appendix C details the scheduling of construction phases. The single phase has been incorporated into the project design and are reflected in the contract drawings and specifications. It is anticipated that the project will be completed in a single phase; refer to the Construction Safety and Phasing Plan provided in Appendix C for additional information.

This project is a single phase and does not require a runway shutdown. The following phase shall be completed concurrently as follows:

1) Phase 1 (Hangar and Stormwater):

A) Hangar Addition:

• Expansion of one existing hangar building to include up to 8 new hangars

• Pavement improvements around the new hangar addition

• New stormwater detention and treatment facility

B) Pavement Markings:

• New hangar Apron

- Taxilanes

40097.134.02 | April 2026 | Page 4

2) Total contract time: 180 calendar days.

Table 1: Construction Phasing Summary

Phase Work Area Duration Runway Closure

1 – Utility Removal #1 23 Days N/A

1 – Excavation #1 23 Days N/A

1 – Grading #1 30 Days N/A

1 – Storm Water #1 10 Days N/A

1 – Structural/

Foundation #1 90 Days N/A

1 – Site Clean Up #1 4 Days N/A

Total 180 Days 0 Days

3. Areas and Operations Affected by Construction Activity.

The Construction Safety and Phasing Plan included in Appendix C for the project identifies areas and operations affected by the construction. Major impacts include:

a. Phase 1 will not require a closure of Runway 14-32, NAVAIDs, Taxiway A, and

Connector Taxiways A1 through A3. Refer to Phase #1 described in section V.1.2

Phasing and on Drawing G-03 in Appendix C for additional information. Back-taxi operations will not be required.

4. Navigation Aid (NAVAID) Protection.

All PAPI’s, MIRL’s, REIL’s, and Threshold lights will remain operational while the Runway is open (NAVAIDs will remain functional during all Phases when working in Work Area #1).

Extreme caution shall be used when working near existing light fixtures, underground electrical ducts, underground electrical cables and any other existing airport fixtures. Should damage occur to any of these items, they will be replaced at the Contractor’s expense.

5. Contractor Access.

a. Location of Stockpiled Construction Materials. Stockpiled materials and equipment storage will be restricted to the areas marked as ‘Contractor Staging Area’ on the attached Construction Safety and Phasing Plans. Contractor stockpiled materials and equipment storage are not permitted within Runway Safety Areas (RSA), Obstacle Free

Zones (OFZ) or Object Free Areas (OFA) of operational runways. Stockpiled materials and equipment adjacent to these areas are to be prominently marked and lighted during hours of restricted visibility or darkness (see Section 16). Limit stockpiled materials to 12

40097.134.02 | April 2026 | Page 5 feet in height and at least 250 feet from any runway centerline and 65.5 feet from any taxiway centerline. In addition, stockpiled materials must also remain outside of the taxilane object free area (TLOFA), a minimum of 39.5 feet from taxilane centerlines.

Stockpiled materials shall not penetrate part 77 surfaces shown on the Construction

Safety and Phasing Plan in Appendix C. Materials are to be stabilized and stored at an approved location so as not to be a hazard to aircraft operations and to prevent attraction of wildlife and foreign object damage. Refer to Sections 6 and 7.

b. Vehicle and Pedestrian Operations. Vehicle and pedestrian access routes for airport construction projects must be controlled to prevent inadvertent or unauthorized entry of persons, vehicles, or animals onto the AOA. Construction and related vehicles shall be restricted to areas clearly indicated on the attached Construction Safety and Phasing

Plan sheets and as directed by the Airport. The use of escort vehicles is addressed below.

i. Construction Site Parking. Vehicle parking areas for contractor employees will be restricted to ‘Contractor Staging Areas’ as depicted in the attached

Construction Safety and Phasing Plan.

ii. Construction Equipment Parking. Contractor employees must park and service all construction vehicles in ‘Contractor Staging Areas’. Inactive equipment must not be parked on a closed taxiway or runway. Employees shall park construction vehicles in the designated staging areas when not in use by construction personnel (for example, overnight, on weekends, or during other periods when construction is not active).

iii. Access and Haul Roads. Construction contractor’s access to the construction site and haul roads has been clearly marked on the Construction Safety and

Phasing Plan. The construction contractor is not permitted to use any access or haul roads other than those approved. Access routes used by contractor vehicles must be clearly marked by contractor to prevent inadvertent entry to areas open to airport operations.

iv. Marking and Lighting of Vehicles. 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.

Normally, work will be permitted during daylight hours only. If an emergency situation requires, or project phasing/sequencing requires, work at night, the contractor shall notify the engineer as far in advance as possible and obtain clearance from the owner before proceeding to work.

40097.134.02 | April 2026 | Page 6

v. Vehicle Operations. Only vehicles used for construction purposes shall enter the air operations area. Contractor vehicle operations are allowed only in defined work areas, haul routes, and paved areas closed to aircraft traffic, unless otherwise approved by the Airport or Engineer in advance. The contractor is to familiarize all construction personnel with the safety provisions.

vi. Training Requirements for Vehicle Drivers. Contractors will attend an Airport

Safety training conducted by Century West Engineering. The training will introduce/refresh the Contractor on airport safety, operations, and communication. The Contractor will be required to pass a test at the end of the training.

vii. Escorting. The Contractor and employees are not required to be escorted while on site if they have been trained per vi above.

At no time will the Contractor, the Contractor’s employees, or subcontractors be given authorization to enter an active runway, or taxiway unless they are being escorted by Airport Operations. Hauling across active runways, taxiways, or aprons shall not be permitted.

viii. Situational Awareness. Vehicle drivers must confirm by personal observation that no aircraft is approaching their position (either in the air or on the ground) when given clearance to cross a runway, taxiway, or any other area open to airport operations.

ix. Two-way Radio Communication Procedures.

The Contractor shall monitor Common Traffic Advisory Frequency

(CTAF/Unicom) 123.05 MHz for Mulino Airport air traffic.

x. Maintenance of the Secured Area of the Airport. Not applicable. There are no secured areas on the airport.

6. Wildlife Management.

Construction contractors must carefully control and continuously remove waste or loose materials that might attract wildlife. Contractor personnel must be aware of and avoid construction activities that can create wildlife hazards on airports, such as the following:

a. Trash. Food scraps must be collected from construction personnel activity.

b. Standing Water. Standing water is not permitted on Airport grounds.

40097.134.02 | April 2026 | Page 7

c. Tall Grass and Seeds. Grass seed is attractive to birds. Lower quality seed mixtures can contain seeds of plants (such as clover) that attract larger wildlife.

d. Poorly Maintained Fencing and Gates. See Section 5 above.

e. Encounters with Wildlife. If the contractor encounters large to medium sized mammals (such as deer) within Airport property fencing they are to notify the project representative during construction.

7. Foreign Object Debris (FOD) Management.

Waste and loose materials, commonly referred to as FOD, are capable of causing damage to aircraft landing gears, propellers, and jet engines. Construction contractors must not leave or place FOD on or near active aircraft movement areas. Materials capable of creating FOD must be continuously removed during the construction project. Additionally, prior to reopening the runway or taxiways following a closure, all FOD must be removed from airfield pavement.

8. Hazardous Materials (HAZMAT) Management.

Encountering hazardous material (HAZMAT) during construction should be considered an emergency. Emergency procedures shall be followed in this instance. Contractor shall take care to prevent and contain leaks of hazardous material (fuel, hydraulic fluids, etc.). Contractors operating construction vehicles and equipment on the airport must be prepared to expeditiously contain and clean-up spills resulting from fuel or hydraulic fluid leaks.

9. Notification of Construction Activit ies.

a. List of Responsible Representatives:

In Case of Emergency

Molalla Police (General) ............................................................... (503) 655-8211

Molalla Fire District (Office) .......................................................... (503) 829-2200

Mulino State Airport Manager (Anthony Beach) ............................. (503) 378-2523

Century West Engineering ............................................................. (503) 419-2130

Federal Aviation Administration (Jenna Pang) ............................... (206) 231-4147

Poison Control Center ................................................................... (800) 222-1222

PNW Skydiving ............................................................................. (503) 759-4455

b. NOTAMs. Only the Airport Manager may initiate or cancel a Notice to Airmen (NOTAM) on airport conditions and is the only entity that can close or open a runway. The airport operator must coordinate the issuance, maintenance, and cancellation of NOTAMs about airport conditions resulting from construction activities with tenants and the local air traffic facility (control tower, approach control, or air traffic control center), and must

40097.134.02 | April 2026 | Page 8 provide information on closed or hazardous conditions on airport movement areas to the

FAA Flight Service Station (FSS) so it can issue a NOTAM.

Construction activity shall not commence prior to issuance of a NOTAM. The Contractor shall provide written notice to the Engineer and Airport Manager at least 14 calendar days in advance of the planned commencement of construction activity. The Airport

Manager will issue applicable NOTAMs no later than 72 hours prior to the start of closure activities. No further work in affected areas will be permitted after completion of work and removal of NOTAMs.

c. Emergency Notification Procedures. In the event of an emergency, Airport staff and the proper authorities will be notified immediately. In the event of an emergency, personnel and equipment shall move immediately to the staging area through appropriate routes. Prior to start of construction, the Contractor shall provide a list of contact information for personnel available 24 hours a day to be contacted in case of an emergency. As applicable, the list shall include phone numbers of the Engineer, Inspector, and Airport Manager. The Contractor shall designate a qualified safety officer for the project as well as appoint a point of contact for any required operational safety concerns.

d. Coordination with ARFF. Coordinate ARFF activities with the Airport Manager. Refer to Figure 1 for ARFF Access Route.

Figure 1: ARFF Access Route

40097.134.02 | April 2026 | Page 9

e. Coordination with Airport Hangar Tenants. Airport Manager to coordinate and notify airport hangar tenants a minimum of 2 days prior to closure of taxilanes and access points via postings and/or emails.

Contractor to coordinate weekend construction with skydiving/glider operators.

Barricades and haul routes need to avoid area southeast of hangars to remain clear of operations. Monitoring CTAF/Unicom frequency 123.05 for traffic advisories is required.

f. Notification to the FAA.

i. Part 77. Any proposed construction or alterations of objects that affect navigable airspace, as defined in Part 77, will be coordinated with FAA.

ii. NAVAIDS. For emergency (short-notice) notification about impacts to both airport owned and FAA owned NAVAIDs, contact: 866-432-2622. FAA

ATO/Technical Operations shall be provided a 45-day minimum notice for the scheduled interruption of NAVAIDS.

10. Inspection Requirements.

a. Daily Inspections. Inspections shall be conducted at least daily, but more frequently if necessary to ensure conformance with the CSPP. For the Contractors own use, a sample checklist has been attached to this safety plan as Appendix A. The project representative during construction, serving as the project inspector, is responsible for monitoring work progress and will respond to construction and safety issues. The inspector will have communication capability with Airport staff. The Contractor is required to immediately remedy any deficiencies, whether caused by negligence, oversight, or project scope.

The Engineer is responsible for the supervision and enforcement of Safety Plan requirements, as well as addressing airfield issues with construction personnel, as appropriate.

b. Inspections Prior to Reopening. As applicable, closed taxilanes are subject to safety inspections prior to reopening the facilities for service. Requirements for reopening a runway/taxiway/apron at the end of each work shift include:

i. Taxilane Object Free Area conditions

a. Open trenches or excavations are not permitted within the TLOFA while the taxilane is open. Backfill trenches before the taxilane is opened. If backfilling excavations before the taxilane must be opened is

40097.134.02 | April 2026 | Page 10 impracticable, cover the excavations appropriately. Covering for open trenches must be designed to allow the safe operation of the heaviest aircraft operating on the taxilane across the trench without damage to the aircraft.

b. The TLOFA must have no potentially hazardous ruts, humps, depressions, or other surface variations, and must be capable, under dry conditions, of supporting the occasional passage of aircraft without causing structural damage to the aircraft.

ii. Pavement conditions

a. Pavement edges and ends shall not exceed 3 inches vertical.

b. Construction debris (gravel, sand, mud, paving materials) and trash shall be removed from pavement prior to reopening runway.

iii. Return all equipment to staging areas.

iv. Remove barricades and runway closure markers.

11. Underground Utilities.

The following individuals, firms or corporations have authority to excavate or otherwise disturb non-FAA owned utility services or facilities located within the limits of the work:

Utility or other Facility Contact Person Phone Number

1. Utility One-Call One-Call Dispatcher 1-800-332-2344 (or 811)

2. FAA ATO Western Service Center 1-206-231-2420

3. Power Portland General Electric 1-800-542-8818

4. Water Mulino Water District 503-829-9787

The Contractor shall vacuum excavate and/or hand dig at crossings to locate and protect all utilities. If accidental damage occurs, the Contractor shall notify the Airport, the utility company, and the Engineer.

Construction will include a new electrical service for the proposed hangar building with Portland

General Electric. In addition, the project will require relaying an existing water line to avoid utility conflict and coordinating with Mulino Water District.

40097.134.02 | April 2026 | Page 11

12. Penalties.

Contractor will make construction personnel familiar with this safety plan. All contractor and subcontractor personnel are required to comply with this safety plan. The Contractor will be held responsible for any accident that occurs as a result of construction personnel not following the provisions of this safety plan.

Strict adherence to the provisions of this plan by all personnel assigned to or visiting the construction site is mandatory. In the event contractor activities are not in conformance with the provisions of this plan, the contractor shall immediately cease those operations involved in the violation of the provisions of this plan and conduct a safety meeting. The owner may direct the contractor, in writing, to immediately cease those operations involved in the violation of the provisions of this plan. The contractor shall not resume construction operations until an appropriate action is taken as determined by the Owner.

13. Special Conditions.

Contractor to coordinate weekend construction with skydiving/glider operators. Barricades and haul routes need to avoid area southeast of hangars to remain clear of operations.

Monitoring CTAF/Unicom frequency 123.05 for traffic advisories is required.

14. Runway and Taxiway Visual Aids.

Visual Aids for Runway 14-32, Taxiway A and connector Taxiways A1-A3 will remain functional during construction.

15. Marking and Signs for Access Routes.

Pavement markings and signs for construction personnel will conform to AC 150/5340-1M

Standards for Airport Markings and 150/5340-18H Standards for Airport Sign Systems respectively, and, to the extent practicable, with the Federal Highway Administration Manual on

Uniform Traffic Control Devices (MUTCD) and/or State highway specifications. Signs adjacent to areas used by aircraft must comply with the frangibility requirements of AC 150/5220-23A, Frangible Connections.

16. Hazard Marking, Lighting and Signing.

a. Hazard marking and lighting prevents pilots from entering areas closed to aircraft, and prevents construction personnel from entering areas open to aircraft. Hazard marking and lighting must also be specified to identify open manholes, small areas under repair, stockpiled material, waste areas, and areas subject to jet blast.

b. Hazard marking equipment:

40097.134.02 | April 2026 | Page 12

i. Barricades. Will be used to identify and define the limits of construction and hazardous areas on airports. They shall have nominal dimensions of 10”H x 96”L x 10”W, shall be specifically designed for airport use, and shall be equipped with pins or connectors so that a “string” of barricades can be formed. The low level barricades shall be in conformance with FAA AC 150/5370-2G, Operational

Safety on Airports During Construction. Low level barricades shall have diagonal striped, alternating, orange/white high reflective sheeting on both sides of the barricade, and two battery or solar powered flashing red lights. If solar powered lights are used, the contractor shall ensure that they are “on” during periods of low visibility, during daylight hours. Barricade type and placement shall be per the Construction Safety and Phasing Plan, included in Appendix C. The spacing of the barricades shall be no more than 10 feet apart, such that a breach is physically prevented barring a deliberate act. They shall be weighted down with water or sand as ballast.

ii. Lights. Must be red and must meet the luminance requirements of the State

Highway Department. Lights must be mounted on barricades and spaced at no more than 10 ft. Lights must be operated between sunset and sunrise and during periods of low visibility whenever the airport is open for operations. Mounted barricade lights may be operated by photocell or battery power, but the contractor must maintain the aforementioned luminance requirements while the airport is open for operations.

iii. No supplement barricades with signs are needed for the proposed project.

iv. Air Operations Area – General. Barricades are not permitted in any active safety area or on the runway side of a runway hold line.

v. Air Operations Area – Runway/Taxiway Intersections. Use highly reflective barricades with lights to close taxiways leading to closed runways. Even for closures of relatively short duration, close all taxiway/runway intersections with barricades.

vi. Air Operations Area – Other. Not applicable to this project.

vii. Maintenance. In accordance with specification Section 01300, the contractor is required to have a person on call 24 hours a day for emergency maintenance of airport hazard lighting and barricades. The contractor must file the contact person’s information with the airport operator.

viii. Runway lighting, taxiway lighting, or taxiway signs and other signs will be turned off or covered up during the construction.

40097.134.02 | April 2026 | Page 13

17. Protection of Runway and Taxiway/Taxilane Safety Areas.

a. Taxilane Object Free Area (TLOFA). The Taxilane Object Free Area (TLOFA) clearing standards prohibit service vehicle roads, parked airplanes, and above ground objects, except for objects that need to be located in the OFA for air navigation or aircraft ground maneuvering purposes. Vehicles may operate within the OFA provided they give right of way to oncoming aircraft by either maintaining a safe distance ahead or behind the aircraft or by exiting the OFA to let the aircraft pass. The TLOFA is measured from

Taxilane centerline. The Mulino State Airport has a TLOFA of 39.5’ from Taxilane Center

Line to the limit of the TLOFA.

18. Other Limitations on Construction.

a. Prohibitions

i. No use of tall equipment (cranes, concrete pumps, etc.) unless a 7460-1 determination letter is issued for such equipment.

ii. No use of open flame, welding, or torches unless fire safety precautions are provided and the airport operator has approved their use.

iii. No use of electrical blasting caps on or within 1,000 ft. (300 m) of the airport property.

iv. No use of flare pots within the AOA.

b. Restrictions. The Notes and Details shown on the attached Site Work Area and Safety

Plan offer additional details on restrictions on which areas cannot be worked in simultaneously, day/night work restrictions and other limitations.

Appendix A Construction Project Daily Safety Inspection Checklist

12/13/2017 AC 150/5370-2G

Appendix D

D-1

APPENDIX D. CONSTRUCTION PROJECT DAILY SAFETY INSPECTION CHECKLIST

The situations identified below are potentially hazardous conditions that may occur during airport construction projects. Safety area encroachments, unauthorized and improper ground vehicle operations, and unmarked or uncovered holes and trenches near aircraft operating surfaces pose the most prevalent threats to airport operational safety during airport construction projects. The list below is one tool that the airport operator or contractor may use to aid in identifying and correcting potentially hazardous conditions. It should be customized as appropriate for each project including information such as the date, time and name of the person conducting the inspection.

Table D-1. Potentially Hazardous Conditions

Item Action Required (Describe)

No Action

Required

(Check)

Excavation adjacent to runways, taxiways, and aprons improperly backfilled.

Mounds of earth, construction materials, temporary structures, and other obstacles near any open runway, taxiway, or taxi lane; in the related Object Free area and aircraft approach or departure areas/zones;

or obstructing any sign or marking.

Runway resurfacing projects resulting in lips exceeding 3 inch (7.6 cm) from pavement edges and ends.

Heavy equipment (stationary or mobile) operating or idle near AOA, in runway approaches and departures areas, or in

OFZ.

Equipment or material near NAVAIDs that may degrade or impair radiated signals and/or the monitoring of navigation and visual aids. Unauthorized or improper vehicle operations in localizer or glide slope critical areas, resulting in electronic interference and/or facility shutdown.

Tall and especially relatively low visibility units (that is, equipment with slim profiles)

— cranes, drills, and similar objects — located in critical areas, such as OFZ and

D-2

Item Action Required (Describe)

No Action

Required

(Check) approach zones.

Improperly positioned or malfunctioning lights or unlighted airport hazards, such as holes or excavations, on any apron, open taxiway, or open taxi lane or in a related safety, approach, or departure area.

Obstacles, loose pavement, trash, and other debris on or near AOA. Construction debris

(gravel, sand, mud, paving materials) on airport pavements may result in aircraft propeller, turbine engine, or tire damage.

Also, loose materials may blow about, potentially causing personal injury or equipment damage.

Inappropriate or poorly maintained fencing during construction intended to deter human and animal intrusions into the AOA.

Fencing and other markings that are inadequate to separate construction areas from open AOA create aviation hazards.

Improper or inadequate marking or lighting of runways (especially thresholds that have been displaced or runways that have been closed) and taxiways that could cause pilot confusion and provide a potential for a runway incursion. Inadequate or improper methods of marking, barricading, and lighting of temporarily closed portions of

AOA create aviation hazards.

Wildlife attractants — such as trash (food scraps not collected from construction personnel activity), grass seeds, tall grass, or standing water — on or near airports.

Obliterated or faded temporary markings on active operational areas.

Misleading or malfunctioning obstruction lights. Unlighted or unmarked obstructions in the approach to any open runway pose aviation hazards.

D-3

Item Action Required (Describe)

No Action

Required

(Check)

Failure to issue, update, or cancel

NOTAMs about airport or runway closures or other construction related airport conditions.

Failure to mark and identify utilities or power cables. Damage to utilities and power cables during construction activity can result in the loss of runway / taxiway lighting; loss of navigation, visual, or approach aids; disruption of weather reporting services; and/or loss of communications.

Restrictions on ARFF access from fire stations to the runway / taxiway system or airport buildings.

Lack of radio communications with construction vehicles in airport movement areas.

Objects, regardless of whether they are marked or flagged, or activities anywhere on or near an airport that could be distracting, confusing, or alarming to pilots during aircraft operations.

Water, snow, dirt, debris, or other contaminants that temporarily obscure or derogate the visibility of runway/taxiway marking, lighting, and pavement edges.

Any condition or factor that obscures or diminishes the visibility of areas under construction.

Spillage from vehicles (gasoline, diesel fuel, oil) on active pavement areas, such as runways, taxiways, aprons, and airport roadways.

Failure to maintain drainage system integrity during construction (for example, no temporary drainage provided when working on a drainage system).

D-4

Item Action Required (Describe)

No Action

Required

(Check)

Failure to provide for proper electrical lockout and tagging procedures. At larger airports with multiple maintenance shifts/workers, construction contractors should make provisions for coordinating work on circuits.

Failure to control dust. Consider limiting the amount of area from which the contractor is allowed to strip turf.

Exposed wiring that creates an electrocution or fire ignition hazard.

Identify and secure wiring, and place it in conduit or bury it.

Site burning, which can cause possible obscuration.

Construction work taking place outside of designated work areas and out of phase.

Appendix B Specification Sections 01160 and 01300

CENTURY WEST ENGINEERING Section 01160 – General Requirements - 1 of 6 APRIL 2026 │ #40097.134.02

01160 GENERAL REQUIREMENTS

1.00 GENERAL SCOPE

1.01 Location and Plans. The location of the work is at the Mulino State Airport (4S9), located approximately 0.5 miles west of downtown Mulino, Oregon. The Mulino State Airport is owned by the Oregon Department of Aviation (ODAV). For the purpose of this contract, the terms

Airport and Owner are considered the same.

The contract plans for this project contain 32 sheets titled “Mulino State Airport, Hangar and

Waterline Project”.

1.02 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 Mulino 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

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

The term “gate” used herein shall mean any controlled, securable opening in the security fence.

The Contractor must enter and exit the AOA only through the gates designated by the Engineer.

Deliveries to work sites will be controlled by the Contractor or, if applicable, a security gate guard (employed by the Contractor), who will record name and license of driver, vehicle license, and times in and out. The Contractor shall keep the gates locked and secured at all times when not in use. The Contractor shall account for Airport-issued keys and access cards in a manner approved by the Airport.

Within the Air AOA, all equipment, vehicle, 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.

FAA-approved orange and white checkered flags shall be provided by the Contractor on all vehicles and equipment within the Airfield.

CENTURY WEST ENGINEERING Section 01160 – General Requirements - 2 of 6 APRIL 2026 │ #40097.134.02

During night operations, each vehicle entering the AOA 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.

1.03 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. The Contractor should refer to Section 01406, “Construction Staking”, for specific requirements.

1.04 Completion Time. All items of contract work shall be substantially complete within the time period specified in the “Proposal” and the “Contract” or “Agreement”.

1.05 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.

1.06 Special Permits. The Contractor shall pay for and obtain any and all permits required for construction of the work.

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

Hot mix asphalt 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.

1.08 Contractor's Staging Area. An area (or areas) will be set aside on the 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 area shall be restored to its original condition at the conclusion of the work, at no cost to the Owner.

1.09 Disposal of Waste Material. Excess materials of all kinds, including, but not limited to waste earthen material, unsuitable material, strippings, and vegetation/organic material from clearing and grubbing or excavation shall be disposed of off-site at the Contractor's expense.

CENTURY WEST ENGINEERING Section 01160 – General Requirements - 3 of 6 APRIL 2026 │ #40097.134.02

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.

1.10 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.

1.11 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.

1.12 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 proposal 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.

1.13 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.

1.14 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.

CENTURY WEST ENGINEERING Section 01160 – General Requirements - 4 of 6 APRIL 2026 │ #40097.134.02

1.15 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.

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

Contractor's staging. 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.

1.17 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.

2.00 GENERAL CONSTRUCTION RESPONSIBILITIES AND PROCEDURES

2.01 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.

2.02 Haul Routes and Maintenance. The Contractor shall abide by prevailing legal load limit regulations when hauling over airfield pavements and public roads. The Contractor shall perform all necessary maintenance of haul routes during construction and shall perform all work as necessary to restore the routes used by all his equipment to their original condition at the conclusion of construction. New construction haul roads shall be obliterated and original vegetation re-established. Existing roadways, runways, and taxiways shall be patched or overlaid at the Contractor’s expense, as necessary to restore them.

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

All maintenance and restoration work shall be completed to the Engineer's satisfaction before final payment is awarded. No direct payment will be made for this work.

2.03 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.

2.04 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.

2.05 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

CENTURY WEST ENGINEERING Section 01160 – General Requirements - 5 of 6 APRIL 2026 │ #40097.134.02 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.

2.06 Blasting. Blasting is not allowed.

3.00 WORK PROGRESS SCHEDULE

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

3.02 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 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.

3.03 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.

3.04 Method. An overall project critical path schedule and supplementary 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.

3.05 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.

3.06 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.

CENTURY WEST ENGINEERING Section…