00017636 Exhibit A Scope or Work and Technical Specifications.docx

SCOPE OF WORK AND TECHNICAL SPECIFICATIONS

OSU DIATOMACEOUS SILT RESEARCH DRILLING CONTRACT

Fall 2018 Page 1 of 13

SCOPE OF WORK AND TECHNICAL SPECIFICATIONS

ODOT/PSU/OSU DIATOMACEOUS SILT RESEARCH CPT

June 2026 Page 13 of 19

EXHIBIT A

SCOPE OF WORK AND TECHNICAL SPECIFICATIONS

The purpose of the work specified herein is to provide seismic cone penetration testing with pore water pressure measurement (SCPTu) as part of a geotechnical investigation at a site known to be underlain by diatomaceous soils. This investigation is being performed in support of settlement and foundation analyses.

All necessary equipment, machinery, tools, lighting, supplies, materials, fuel, mobilization, water, water delivery, setup, site preparation, safety equipment, skilled personnel, and incidentals to perform the specified work shall be provided by the Contractor. No traffic control is required at the site. All explorations shall be at least 50 feet from the railroad.

At no time shall equipment nor personnel cross RxR tracks, and contractor shall maintain a minimum distance of 50’ from any RxR tracks at all times. Site access will be required to be at locations identified in Exhibit G Figure 1.

The scope of work will include advancing SCPTu soundings at the location indicated in Table 1 below. As site conditions allow, testing will be conducted to the depth indicated in Table 1 for each sounding (to be determined in conjunction with the ODOT Project Geologist).

Table 1. Location and approximate depth of exploration.

[ft.]

A truck-mounted cone penetration testing (CPT) rig will be able to access the site. We expect that at least three and up to six SCPTu soundings will be performed. Expected site conditions include fill and colluvium (potentially with large cobbles) underlain by diatomaceous silts (from very soft to very stiff) interbedded with volcanic ash, organics, and sand lenses. Pre-drilling is not anticipated to be required to advance through surficial materials, however, if refusal is reached with 50 feet of the surface, the profile location may need to be re-located several feet.

STATEMENT OF WORK

Cell: 530-750-9891 Office: 541-737-8535

ODOT Project Manager Kira Glover-Cutter

Oregon Department of Transportation, Research Section 355 Capital St NE Salem OR, 97301 Kira.m.glover-cutter@odot.oregon.gov

Project Dates

Start Date: Not prior to September 1, 2026.

Final Completion Date: November 17th, 2027

No Work Period: November 18th 2026 thru March 30th 2027, due to winter and inclement weather.

As this SOW supports a university research partnership, the date selected for project start must be negotiated with ODOT to ensure each party is present on-site during project work. No work will be performed on holidays. Weekend work may be scheduled to avoid unnecessary demobilization/remobilization expenses.

Utility Search ODOT shall call for and have underground utilities located and marked before any work at the drill sites begins. Some overhead utilities are present at some locations. The Contractor is advised to either call for similar utility locates or coordinate with the ODOT Project/Field Geologist to have ODOT utility call-in ticket numbers transferred into the Contractor’s name, which is to ensure protection from liability that the Contractor may have otherwise. The Contractor shall not drill within three feet of any marked/identified utility.

Seismic Cone Penetration Sounding with Pore water Pressure Dissipation (SCPTu) At least three and up to six soundings will be advanced at the project site (see Figure 1 for a vicinity map), as described below and as directed by ODOT/PSU/OSU project personnel. The total penetration footage is estimated at approximately 750 to 1500 feet. Subsurface materials at the site are anticipated to be a mixture of sand, silt, and gravel fill material (≈0-50 ft.) over soft to stiff diatomaceous soils (50-250 ft.) with possible sand lenses up to 5 ft thick, and dense sand and gravel (250 ft. and deeper). Sounding locations may also go through embankment fill composed of sand with trace fine gravel.

Soundings shall be performed and abandoned in accordance with the Oregon Water Resources Department (OWRD) rules and regulations. All CPT data reports shall be filled out using the assigned ODOT/PSU/OSU sounding number, signed by the licensed operator, and submitted to the OWRD with a copy submitted to the ODOT/PSU Project Manager.

Downhole shear wave velocity measurements shall be performed during testing. The contractor will provide a seismic source for generating waves at the ground surface and an instrumented cone containing the receiver(s) necessary (e.g., geophone(s)) to detect shear wave arrival times.

Pore water pressure dissipation tests shall be performed as directed by ODOT/PSU/OSU project personnel. Due to anticipated high excess pore water pressure conditions, it may be necessary in some instances to advance the cone at a rate that is less than the standard 2 cm/s, at the discretion of the ODOT/PSU/OSU representatives.

Variable rate cone penetration tests shall be performed in at least one sounding in the diatomaceous soils. The penetration rate shall range from 0.02 cm/s to 20 cm/s for a given penetration interval. The penetration velocity and depth interval shall be directed by ODOT/PSU/OSU representatives.

Special Note: In previous site investigations involving diatomaceous soils at this site, observed pore water pressures have ranged from under 100 psi to over 250 psi. It is the Contractor’s responsibility to provide a cone penetrometer with pore pressure transducer(s) capable of measuring up to 500 psi at the necessary resolution (typ. ≈0.001 psi).

Access to Project Site Access to drill sites will be via dirt road or otherwise improved surface. ODOT/PSU/OSU will acquire all necessary right-of-entry permissions. Figures 1 and 2 in Exhibit G show the project site in more detail.

At no time shall equipment, vehicles, nor personnel cross RxR tracks and contractor shall maintain a minimum distance of 50’ from any RxR tracks at all times.

Water Sources and Delivery Water delivery access will be from the available locations as identified and managed by the Contractor. Sufficiently sized and lengths of water delivery pipe/hose/pumps shall be provided by the Contractor as necessary (see Section 2.10 of the Technical Specifications).

Anticipated Subsurface Conditions The subsurface materials anticipated to be encountered are compacted embankment fill consisting of sand and fine gravel, native soils consisting of sands, gravels, silts, and clays, possibly with occasional cobbles. Upper units will likely consist primarily of colluvium and stream alluvium with deeper units being comprised largely of very soft to stiff diatomaceous soils with occasional sand lenses. Beyond the deep diatomaceous soils, deep dense sand and gravel is expected. Soundings will be complete when either the rig capacity is exceeded or the deep sand and gravel is encountered. Shallow groundwater may be present in some or all soundings; past soundings detected groundwater around 10 feet bgs.

TECHNICAL SPECIFICATIONS

1.0 SCHEDULE

Work shall be completed by November 17, 2027. The start date will be the date the contractor mobilizes equipment and personnel to the work site. Once the contractor mobilizes equipment and personnel to a given work site, work shall progress continuously until all work at a given site is completed, excluding holidays, subject to the requirements of Section 2.09. In between sites, the contractor may elect to recess as required for mobilization time or schedule constraints.

2.0 MINIMUM REQUIREMENTS FOR ALL TESTING OPERATIONS

2.1 Control of Work: The Contractor shall have an on-site responsible supervisor on the job at all times while work is in progress, capable of and with authority to make job site decisions as an official Contractor’s representative.

This work shall consist of in-situ testing in soil or rock. Soundings shall be advanced at the locations and to the depths directed by the ODOT/PSU/OSU representatives. Adequate testing equipment and materials should be maintained on location to complete the soundings to the estimated depths. All advancement, testing, and abandonment of subsurface penetrations shall be in accordance with the following test methods and legal requirements:

2.1.1 ASTM D5778–20, “Standard Test Method for Electronic Friction Cone and Piezocone Penetration Testing of Soils”

2.1.2 ASTM D6067/D6067M–17, “Standard Practice for Using the Electronic Piezocone Penetrometer Tests for Environmental Site Characterization and Estimation of Hydraulic Conductivity”

2.1.3 Administrative Rules, Water Resources Department, Chapter 690, Division 240, “Construction, Maintenance and Abandonment of Monitoring Wells, Geotechnical Holes, and Other Holes in Oregon”

2.1.4 Federal and Oregon Occupational Safety and Health Administration (OSHA)

2.1.5 Any and all local or state noise requirements, forestry permits, and permits issued.

2.2 Condition of Equipment and Tools: All equipment and tools shall have been maintained in good operating condition prior to being mobilized to the site and shall continue to be maintained in good condition for the duration of the project. Frequent or extended breakdowns shall be cause for rejection of equipment and/or rigs and replacement at no cost to the Agency.

2.3 Property Damage: Any water and cuttings discharged from the penetrations shall be disposed of in a manner consistent with environmental regulations and approved by the ODOT/PSU/OSU representatives. Property damage and contamination of waterways shall not be permitted. When track mounted CPT rigs are operated on paved surfaces, steps to protect the paved surfaces from any damage shall be used during unloading or loading, mobilizing to and from sites or during testing activities. When track or truck mounted CPT rigs are operated on open State or private property, steps to protect against excessive (or at the discretion of the property owner) ground damage, such as ruts and torn sod etc., shall be used during unloading or loading, mobilizing to and from sites or during testing activities. Any damage to State or private property caused by the Contractor shall be repaired within 15 days of such damage by a State-approved method. Measures shall be taken to prevent water or cuttings discharge to any local drainages, streams or wetland areas.

2.4 Personnel Requirements: The Contractor shall furnish a crew consisting of experienced operators of sufficient size to perform the work in a safe and efficient manner, even in the presence of reasonably anticipatable but unplanned complexities. The ODOT/PSU/OSU representatives shall have the authority to suspend work and require the replacement of any Contractor's personnel not exhibiting adequate capability or reasonable safety and responsibility in their job performance. Such replacements shall be made prior to resuming work and within 48 hours after the ODOT/PSU/OSU representative provides notification to the Contractor. Neither standard shift nor overtime shall not be invoked during suspension periods (Section 5.3).

2.5 Safety: Safety is of primary concern on this project, for the traveling public, Contractor's crew, and State employees. In the event the ODOT/PSU/OSU representatives determine there are concerns regarding safety, the ODOT/PSU/OSU representatives shall have the authority to suspend work until such time as those concerns are resolved to the satisfaction of the State. The Contractor shall take every precaution necessary to ensure the safety of all parties and the protection of all property associated with this project. The Contractor shall complete daily tailgate meetings to discuss and document a review of the previous day’s safety concerns or hazards and a review of upcoming tasks and actions that will be taken to properly manage safety risks for the current day’s tasks. This tailgate meeting will require the presence of the ODOT/PSU/OSU representatives. The ODOT/PSU/OSU representatives will review and sign the tailgate meeting notes when complete. All persons on the job site shall wear approved hard hats at all times and ANSI Class 3 reflective safety vests when on ODOT Right of Way or when on or adjacent to any other City, County, or private roadways, multi-use paths, or parking lots. During operations, hearing protection, eye protection, and gloves (when deemed necessary) shall be worn by all personnel, including the ODOT/PSU/OSU representatives. Neither standard shift nor overtime shall not be invoked during suspension periods (Section 5.3).

2.6 Equipment: The type of CPT equipment supplied by the Contractor shall be suitable for the terrain and testing required, as described in the Scope of Work. Equipment shall have all tools, supplies, and spare parts necessary in sufficient quantities to achieve testing to the specified depths and avoid unnecessary delays. All CPT equipment and methods shall provide optimum measurement quality for all materials and comply with all applicable State and Federal Regulations.

The ODOT/PSU/OSU representatives shall have the authority to suspend work and require the replacement of, or additional, CPT equipment at the Contractor’s expense if the Contractor cannot attain the specified or directed depth or undergoes unnecessary delays brought about by equipment shortages or inadequacies. Neither standard shift nor overtime shall not be invoked during suspension periods (Section 5.3).

2.7 SCPTu Machines: Shear wave velocity measurements will be performed at intervals of no more than 2.5 ft. to the full depth of the sounding, or as directed by ODOT/PSU/OSU project personnel. The Contractor shall employ a standard 10-cm2 u2-type SCPTu probe as required and accepted by the ODOT/PSU/OSU representatives as being in compliance with relevant ASTM standards to advance the soundings to the desired depth. Approximately four pore water pressure dissipation tests will be performed within the diatomaceous materials in each sounding, at depths directed by ODOT/PSU/OSU project personnel.

The Contractor will provide a full text and graphical report and provide the data in one spreadsheet or comma-delimited text file per sounding containing all data. The report shall include the following information and interpretation:

· tip resistance;

· sleeve friction;

· pore pressure; and

· shear wave velocity.

The report shall be submitted to the ODOT/PSU/OSU project personnel within 14 days after completion of the last SCPTu sounding and shall include electronic data in ASCII, CSV, or XLSX format in addition to the hard copy documents.

2.8 Investigation Derived Waste (IDW): The Contractor shall collect and dispose of all uncontaminated IDW. All labor, materials, and equipment necessary to handle and dispose of uncontaminated cuttings and fluids is considered incidental to the testing. Collection and disposal of single-use PPE (gloves, earplugs, etc.) shall be the responsibility of the Contractor.

Contaminated soil is not anticipated. If contaminated soil is encountered, the materials shall be segregated from uncontaminated materials whenever possible. The ODOT/PSU/OSU representatives shall determine when contaminated materials are present and shall direct the contractor when to place them in contractor-supplied drums. Each drum shall be labeled with the sounding number and date. The contractor shall transport the filled drums to a nearby ODOT facility, placing the drums as directed by the ODOT Project Manager/Project Geologist. Labor and equipment necessary to transport contaminated materials is considered incidental to testing.

2.9 Days and Hours of Operation: All testing operations shall be limited to daylight hours. Work hour restrictions may be in place if local conditions during daylight hours dictate. Also, work shall not be conducted on state holidays.

2.10 Water and Water Delivery: The Contractor shall provide water sources for this project as necessary, along with the equipment necessary for proper and efficient delivery and storage of water for the testing activities. A sufficient size and length water delivery pipe/hose/pumps shall be provided by the Contractor to adequately provide water to the CPT rig.

2.11 Erosion and Sediment Control: It shall be the Contractor’s responsibility to control any occurrence of erosion or sediment laden fluids created as a result of the testing operation and prevent any runoff from the site into any roadside ditch or waterway without proper treatment to remove sediments. Where required, all spoils shall be collected, transported off site, and disposed of by the contractor. All erosion control and sediment removal measures taken shall be approved by the ODOT/PSU/OSU representatives and shall be incidental to the testing operation. Contractor shall seed and mulch test sites, access roads and other disturbed areas as directed by the ODOT/PSU/OSU representatives.

2.12 Hazardous Materials: The Contractor shall notify the ODOT/PSU/OSU representatives of any hazardous materials to be used on the job and shall have material safety data sheets (MSDS) for those materials available on site.

3.0 ENVIRONMENTAL PROTECTION MINIMUM REQUIRED MEASURES

3.1 General:

3.1.1 Do not discharge contaminated or sediment-laden water directly into any waters of the State until it has been satisfactorily treated (e.g., by bioswale, filter, settlement pond, pumping to a vegetated upland location, bio-bag, dirt-bag or collected and transported to an approved off site location).

3.1.2 The ODOT/PSU/OSU representatives retain the authority to temporarily halt or modify the Project in case of excessive turbidity or damage to natural resources.

3.1.3 Maintain hazardous material spill containment booms and absorbent materials on‑site to facilitate the cleanup of hazardous material spills. Install hazardous material spill containment booms or absorbent materials in instances where there is a potential for release of petroleum or other toxicants.

3.1.4 Do not place any material or waste on any public or private wetland, or in and adjacent to any waterway.

3.1.5 If flooding of the project site is expected to occur within 24 hours, evacuate areas used for staging, access roads, or storage and remove materials, equipment, and fuel.

3.2 Pollution Control Plan: The Contractor shall comply with Oregon State Spill Laws contained in OAR 340, Division 108 and OAR-108.010 and with Federal Laws found in 40 CFR Part 302-Table 302.4.

3.2.1 Prior to the commencement of the drilling the Contractor shall provide the ODOT/PSU/OSU representatives with a Pollution Control Plan that, at minimum states what action the Contractor shall take to prevent, contain or clean up a release of petroleum products or any hazardous material.

3.2.2 The Contractor shall have on site (and provide ODOT/PSU/OSU with a materials list) absorbent material or a Spill Control Kit capable of containing or cleaning up a release of product from the largest tank or reservoir at the project site, a spill containment and control plan with notification procedures, specific cleanup and disposal instructions for different products. A description of quick response containment and cleanup supplies shall be available on the site, including a supply of sediment control materials (e.g., a silt fence, straw bales, an oil-absorbing, floating boom whenever surface water is present) and the proposed methods for disposal of spilled materials. Contractor personnel shall be trained in the use and application of absorbent materials.

3.2.3 The Contractor shall immediately clean up all spills and notify ODOT/PSU/OSU representatives.

3.3 Additional Requirements:

3.3.1 The ODOT/PSU/OSU representatives retain the authority to temporarily halt the project activities in case of non-compliance by the Contractor with any of the listed Environmental Protection Requirements above.

4.0 MATERIALS

4.1 Materials Supplied By ODOT/PSU/OSU: No materials required.

4.2 Materials Supplied by the Contractor: The Contractor shall supply all equipment and necessary supplies needed to complete the SCPTu soundings and reporting, repair any property damage, backfill all holes, and dispose of spoils, fluids, and cuttings. The Contractor shall also provide the form to be used and filled out for the completion of daily safety tailgate meetings.

5.0 MEASUREMENT AND PAYMENT

5.1 Administration: This item shall be considered payment in lump sum for all materials, equipment, labor, mileage and incidentals related to the administration of this contract. This includes but is not limited to, production and submittal of the Pollution Control Plan, production and submittal of all CPT sounding reports. Payment is included in the Administration Bid Item. Payment for this item shall not be issued until the ODOT/PSU/OSU project personnel have received a copy of all Oregon Water Resource Department (OWRD) CPT sounding reports indicating they have filled out using the assigned ODOT/PSU/OSU boring number, signed by the driller, and submitted to OWRD. Payment shall be lump sum.

5.2 Mobilization: This item shall be considered payment in lump sum for all materials, equipment, labor, mileage and incidentals necessary to mobilize and demobilize all equipment and supplies to and from and within the project site. This item includes payment for any and all special equipment and labor necessary to accomplish the job (i.e. platforms, vehicles, cats, winches, cranes, helicopters, etc.). This item includes time required to set up the CPT rig and any ancillary equipment. This item also includes any safety related items such as handrails and fall protection rails. Payment shall be per each mobilization, with only one mobilization allowed for the project.

5.3 Seismic Cone Penetration Testing With Sounding Report: This item shall be considered payment per site for all materials, equipment, labor, and incidentals necessary to prepare the site, advance the exploration soundings to the depths required, abandon these holes in accordance with Oregon Water Resources rules and regulations, patch existing pavement, data preparation and delivery, site clean-up, and disposal of all spoils and cuttings. SCPTu measurements and payment shall be based on use during a standard nine (9) hour on-site shift. Testing within the standard shift shall include standard CPTu advancement, u2 dissipation tests, shear wave velocity tests, and variable penetration rate testing. The standard shift shall also include re-locating between sounding locations, communication between the Contractor and ODOT/PSU/OSU personnel, and daily safety tailgate meetings. Testing beyond a standard shift will be paid hourly as overtime. The amount of overtime for any and all shifts shall be documented on a per shift basis to the nearest quarter of an hour by both the ODOT/PSU/OSU representatives and the Contractor’s on-site responsible supervisor. Such records shall be submitted with invoices.

The standard shift shall not include time during which the Contractor is unable to perform due to the Contractor’s lack of adherence to this contract. Delays in work due to adverse weather conditions, only if directed by the ODOT/PSU/OSU representative, shall be included in the standard shift. Delays due to work resulting from the Contractor’s equipment failure or safety issues shall not be included in the standard shift.

Payment for shear wave velocity tests will be per test depth. Tests shall be performed at 1-m intervals throughout the interval(s) of interest, particularly in diatomaceous soils.

5.4 Per Diem: Per diem for lodging and “meals and incidentals” (as defined by the U.S. General Services Administration (“GSA”)) will be paid when specifically authorized on a PO and in accordance with this section. Charges for per diem will only be authorized during instances of overnight travel resulting in commercial lodging expenses as follows:

a. If the repair/replacement work identified on a Work Order will take longer than one work shift AND the location is more than 100 miles away from the Contractor’s facility, Per Diem will be paid starting the first day of work for weeks with two or more consecutive days of work. Per Diem will not be paid on days when workdoes not occur.

b. Per diem for meals and incidentals will be paid per person, per day, for workers, in accordance with GSA standards, upon receipt of an associated lodging invoice and/or receipt. Receipts for meals are not required. Per Diem for lodging will be paid up to the maximum rate(s) established by the GSA, upon a correct invoice and/or receipt.