FY26 Willapa Sediment Char PWS 2026.03.26 Amendment 1.docx

Performance Work Statement Sediment Characterization Willapa Bay Pacific County, Washington

November 2025 Table of Contents

PART 1 – GENERAL INFORMATION

This is a non-personnel services contract to provide technical services for a sediment characterization in Willapa Bay, Washington (Error! Reference source not found.). The U.S. Army Corps of Engineers (USACE) will not exercise any supervision or control over the contract service providers performing the services herein. Such contract service providers will be accountable solely to the Contractor who, in turn, is responsible to the USACE.

DESCRIPTION OF SERVICES / INTRODUCTION

Provide all personnel, equipment, facilities, transportation, tools, materials, supervision, and other items and non-personal services necessary to perform the tasks for a sediment characterization in Willapa Bay as defined in this Performance Work Statement (PWS) except as specified in Section 3 as USACE-furnished property and services. Perform to the standards in this contract.

BACKGROUND

As authorized by Congress, the Seattle District, U.S. Army Corps of Engineers (USACE) is responsible for maintenance dredging of the Willapa Bay project components including the entrance channel at Tokeland Marina, the entrance channel and mooring basin access lane at Bay Center, and the entrance channel and mooring basin access lane at Nahcotta, in Pacific County, Washington.

USACE last dredged portions of the Willapa Bay navigation project in 2002. Since then, the Port of Willapa has used a small private cutterhead dredge to maintain portions of the project every two to six years. USACE has continued to evaluate the project, with sediment testing completed in 2007 at Tokeland, 2011 at Bay Center, 2014 at Tokeland, Bay Center, and Nahcotta, and 2020 at Tokeland, Bay Center, and Nahcotta. In the most recent characterization, all dredged material was found to be suitable for open-water disposal (DMMP 2021). Table 1 summarizes details regarding the dimensions of project features and estimated volume above authorized depth. The USACE is responsible for dredging portions of the authorized project as needed to maintain navigation.

Previous Sediment Characterizations The navigation channel is ranked “low” by the Dredged Material Management Program (DMMP) agencies for concern for potential contamination. Descriptions of the historical characterization efforts follow.

Tokeland

· 1991. A single composited dredged material management unit (DMMU) sample representing the marina (including marina area P1) was collected in 1991 and analyzed for DMMP chemicals of concern (COCs). Three COCs (4-methylphenol, phenol, and pyrene) had detected exceedances; non-detect exceedances occurred for an additional number of chemicals. Bioassay testing was conducted, and the DMMP agencies determined that the dredged material was suitable for unconfined open-water disposal (DMMP 1991).

· 1998. Twelve individual grab samples were collected in March 1998 and composited into three DMMUs to represent 76,000 cubic yards (CY) from the entrance channel, marina, and marina area P1. There were no COC detections or non-detect concentrations that exceeded the DMMP screening levels. All material was found suitable for open-water disposal (DMMP 1998a).

· 2006. A total of eleven grab samples were collected from the entrance channel, marina, and marina area P1 in August 2006; the grab samples were composited into three composites to represent the entrance channel, marina, and marina area P1. Based on the two previous sequential testing rounds conducted in 1991 and 1998, the marina and marina area P1 were re-ranked from moderate to low-moderate for testing purposes. No COCs were detected above the DMMP screening levels. Five non-detected chemicals (hexachlorobenzene, dimethylphenol, benzoic acid, N-nitrosodiphenylamine, and alpha-chlordane) had detection limits that exceeded DMMP screening levels in one or all three DMMUs; bioassay testing was thus required for all three DMMUs. The results from the bioassay testing indicated that all of the material was suitable for unconfined open-water disposal (DMMP 2007).

· 2014. Eight cores were collected from the entrance channel, marina, and marina area P1 in September 2014 and composited into four DMMUs (2 surface and 2 subsurface DMMUs). No COCs were detected above DMMP screening levels; three COCs (total chlordane, dieldrin, and heptachlor) were not detected with elevated reporting limits above their respective DMMP screening levels in all four DMMUs. All DMMUs samples were subsequently analyzed for the standard DMMP pesticide COCs using a high resolution method with lower reporting limits; using this method, all pesticides were non-detect with detection limits below the DMMP screening levels. Total dioxin Toxic Equivalencies (TEQs) were below the 15 pptr TEQ and 5 pptr 2,3,7,8-TCDD threshold concentrations for dispersive disposal in Willapa Bay. Total TEQs (U=1/2 reporting limit [RL]) ranged from 1.2 to 2.7 pptr. All material was found suitable for unconfined open-water disposal (DMMP 2015).

· 2020. Nine cores were collected in August 2020. Material from the cores were composited into three DMMUs to represent the entrance channel, marina, and marina area P1. All material was found suitable for unconfined open-water/flow-lane disposal (DMMP 2021).

Bay Center

· 1998. Tier 1 no-test for 15,000 CY from Bay Center Entrance Channel, based on a 1993 grain size characterization that showed 99.7% sand from two samples (DMMP 1998b).

· 2001. Vibracore samples characterized 38,000 CY of proposed dredged material. Cores were composited into three DMMUs: two surface and one subsurface DMMUs. Analyses included all routine DMMP COCs (including tributyltin [TBT], but no dioxin) and included special analyses for pesticides carbaryl and glyphosate. All chemicals were either detected or not detected below DMMP screening levels (SLs), and TBT was quantitated at levels well below the screening limit in the porewater of the three DMMUs characterized. All sediments were found suitable for open-water disposal (DMMP 2001).

· 2011. Port of Willapa proposed 18,000 CY of dredging in shoals leading to the Bay Center Marina. Five individual grab samples were composited into one DMMU. Laboratory analysis was conducted for the standard DMMP COCs plus glyphosate and dioxins. There were no SL exceedances; dioxin TEQ (U=1/2 RL) was 1.36 pptr. All material was found suitable for open-water disposal (DMMP 2011).

· 2015. Eight cores were composited into two surface DMMUs. Porewater TBT was not detected at 0.005 mg/L. Diethyl phthalate initially exceeded the SL in DMMU 2, but further replicated extractions and reanalysis did not replicate this finding. Because diethyl phthalate is a common laboratory contaminant, the DMMP concluded that the original finding was anomalous. Dioxin TEQs (U=1/2 RL) were 1.33 and 0.62 pptr, well below the 15 pptr TEQ threshold for Willapa Bay. All material was found suitable for open-water disposal (DMMP 2015).

· 2020. To characterize approximately 72,000 CY, six cores were collected in the Inner Channel and composited into two DMMUs for laboratory analysis of the DMMP COC list. In the Palix River access lane, three grabs were composited for one DMMU analyzing total solids, total organic carbon, and grain size under the Tier 1 no-test exclusionary status. and all material was found suitable for open-water/flow-lane disposal (DMMP 2021).

Nahcotta

· 2004. In September 2003, cores were collected from a total of 17 locations and composited into four composite DMMUs to represent 145,000 CY of proposed dredging. Only standard DMMP COCs were analyzed for, and there were no detected or undetected results above screening levels. All material was found suitable for unconfined open-water disposal (DMMP 2004).

· 2015. In September 2014, forty cores were collected and subsequently composited to represent eleven DMMUs, of which one was a subsurface DMMU. No COCs were detected above DMMP screening levels. Two COCs (total chlordane and heptachlor) were undetected with elevated reporting limits above their respective DMMP screening levels in two DMMUs. All DMMU samples were subsequently analyzed for the standard DMMP pesticide COCs using a high-resolution method with lower reporting limits; using this method, no pesticides were detected or not detected above the DMMP screening levels. TBT (porewater) was undetected at 0.005 mg/L. Total dioxin TEQs were below the 15 pptr TEQ and 5 pptr 2,3,7,8-TCDD threshold concentrations for dispersive disposal in Willapa Bay. Total TEQs (U=1/2 RL) ranged from 1.2 to 3.7 pptr. All material was found to be suitable for unconfined open-water disposal (DMMP 2015).

· 2020. Sixteen cores were collected in the entrance channel and boat basin to characterize three surface and two subsurface DMMUs. Sampling was conducted in August 2020. The standard DMMP COC list was analyzed and no COCs were detected above DMMP screening levels. All material was found suitable for open-water/flow-lane disposal (DMMP 2021).

OBJECTIVES

The objectives for this contract are as follows:

· to prepare a sampling and analysis plan (SAP) that shall be suitable for submission to the DMMP agencies for approval;

· to sample and characterize the sediments in the proposed dredging area as described in the SAP; and

· to prepare a report to document characterization results that can then be used by DMMP to make a suitability determination. This PWS includes preparation of the SAP; sampling and testing of dredged material; data collection and analysis; and report preparation.

SCOPE

Perform a sediment characterization in Willapa Bay. The services provided under this contract are detailed in Part 5 – Specific Tasks.

PERIOD OF PERFORMANCE (POP)

The Period of Performance shall be for nine (9) months (270 days) from time of award to contract completion.

GENERAL INFORMATION

Quality Control Plan Quality control procedures are addressed under Part 5 Specific Tasks, CLIN 1.

Quality Assurance The USACE will evaluate the Contractor’s performance under this contract in accordance with the Performance Requirements Summary (See Section 7.3). This plan is primarily focused on what the USACE must do to ensure that the Contractor has performed in accordance with the performance standards. It defines how the performance standards will be applied, the frequency of surveillance, and the minimum acceptable defect rate(s).

On the request of the Contracting Officer’s Representative (COR) or any inspector, provide the use of boats, boatmen, laborers, and material forming a part of the ordinary and usual equipment of the sampling team as may be reasonably necessary to inspect the sampling work.

Schedule Submit a project schedule within ten (10) business days after the date of award. The schedule should target sampling with sufficient time for completion of option CLINs, if required. Update the project schedule, at minimum, monthly. Include an updated schedule in all Pay Requests.

Government Review Include two (2) weeks for Government review of any and all contract deliverables.

Recognized Holidays The Contractor is not required to work on Federal Holidays:

New Year’s Day Martin Luther King Jr.’s Birthday President’s Day Memorial Day Independence Day Juneteenth Labor Day Indigenous Peoples Day (Columbus Day) Veterans Day Thanksgiving Day Christmas Day Hours of Operation The Contractor is responsible for being responsive to communication from USACE between the hours of 8:00 a.m. and 4:00 p.m. Pacific Time, Monday thru Friday, except Federal holidays or when the USACE facility is closed due to local or national emergencies, administrative closings, or similar USACE-directed facility closings.

Place of Performance The services described in this PWS will be performed in Willapa Bay and at the Contractor’s offices.

Type of Contract The USACE will award a performance-based Firm Fixed Price Contact.

Security Requirements There are no special security requirements. Work will not be conducted at a federal facility of any kind; will not involve the use of government equipment or vessels; and will not require access to government automated information systems. Refer to Section 1.6.11 for required pre-screening procedures for Contractor key personnel.

Post Award Conference/Periodic Progress Meetings The Contractor agrees to attend any post award conference convened by the contracting activity or contract administration office in accordance with Federal Acquisition Regulation Subpart 42.5. The Contracting Officer (KO), COR, and other Government personnel, as appropriate, may meet periodically with the Contractor to review the Contractor's performance. At these meetings the KO will apprise the Contractor of how the government views the Contractor's performance and the Contractor will apprise the Government of problems, if any, being experienced. Appropriate action shall be taken to resolve outstanding issues. These meetings shall be at no additional cost to the government.

Attend a virtual initial coordination meeting with the COR and Quality Assurance Representative (QAR) within two (2) weeks of contract award. The purpose of this meeting will be to familiarize the Contractor with the project and discuss any issues with planning, project personnel, and necessary materials and equipment to assure that the study goes forward as planned.

USACE Personnel Contracting Officer (KO) Refer to Part 2 of this PWS for the definition of a Contracting Officer (KO).

Contracting Officer’s Representative (COR) Refer to Part 2 of this PWS for the definition of a COR. As determined by the Contracting Officer, a COR will be appointed and identified by letter of designation, a copy of which will be provided to the Contractor by the Contracting Officer. The designation letter states the responsibilities and limitations of the COR, especially with regard to changes in cost or price, estimates, or changes in delivery dates. The COR is not authorized to change any of the terms and conditions of the resulting order. The COR monitors all technical aspects of the contract and assists in contract administration. The COR is not authorized to obligate the Government. If the work is not written in the contract, the COR is not authorized to request new work.

The COR is authorized to perform the following functions: assure that the Contractor performs the technical requirements of the contract, perform inspections necessary in connection with contract performance, maintain written and oral communications with the Contractor concerning technical aspects of the contract, issue written interpretations of technical requirements, including Government drawings, designs, specifications, monitor Contractor's performance and notifies both the Contracting Officer and Contractor of any deficiencies, coordinate availability of Government property, and coordinate site entry of Contractor personnel.

Quality Assurance Representative (QAR) The QAR monitors technical aspects of the contract and assists in contract administration. The QAR assures that the Contractor performs the technical requirements of the contract, performs inspections necessary in connection with contract performance, maintains written and oral communications with the Contractor concerning technical aspects of the contract, monitors Contractor performance and notifies both the Contracting Officer and Contractor of any deficiencies. The QAR is not authorized to change any of the terms and conditions of the resulting order.

Billing Procedures Submit invoices electronically to the QAR and COR in accordance with the progress schedule for work performed under this contract. The COR will review the invoice for acceptance and processing.

Contractor Key Personnel Designate the following key personnel within ten (10) days of contract award except as otherwise indicated:

Contract Manager The Contract Manager is responsible for the overall management and administration of the contract. Designate in writing to the KO at the time of award, and in the SAP, the name of this person, and an alternate who will act for the Contractor when the Contract Manager is absent.

Project Manager The Project Manager is responsible for the execution and coordination of all technical aspects of the project; assures timely completion of tasks, adherence to the statement of work, and maintenance of quality; communicates directly with the QAR as needed for resolution of technical issues; and notifies the COR, QAR and Contract Manager of any substantive changes needed in the PWS.

The Project Manager is responsible for developing work plans, coordinating and assisting the field collection team, and ensuring that laboratory data from the project meets the program requirements. The Project Manager oversees the interpretation and reporting of the project results.

Site Safety and Health Officer The Site Safety and Health Officer (SSHO) is responsible for overseeing and ensuring implementation of the Contractor’s Safety and Occupational Health (SOH) program in accordance with the latest version of the USACE Safety and Occupational Health (SOH) Requirements Manual (EM 385-1-1). The SSHO must have the authority to shut down the site work if/when Health and Safety becomes an issue. The SSHO may enlist the support of safety and occupational health professionals with appropriate education and experience when working on sites with multiple (chemical, biological, and physical) hazards.

Designate the SSHO in the Sampling and Analysis Plan submittal.

Quality Control Manager The Quality Control (QC) Manager is responsible for overall management of Contractor Quality Control (CQC) and has the authority to act in all CQC matters. The QC Manager is responsible for ensuring compliance with the requirements identified in the Performance Work Statement and the Contractor Quality Control procedures.

Designate the QC Manager in the Sampling and Analysis Plan submittal.

Pre-screening Requirements for Personnel Candidates The following are prescreening requirements for key Contractor personnel required by USACE:

Pre-screen Candidates using the E-Verify Program (http://www.uscis.gov/e-verify) website to meet the established employment eligibility requirements. The Contractor must ensure that the Candidate has two valid forms of Government issued identification prior to enrollment to ensure the correct information is entered into the E-Verify system. Provide an initial list of verified/eligible Candidates to the COR no later than 3 business days after the initial contract award. When contracts are with individuals, the individuals will be required to complete a Form I-9 Employment Eligibility Verification, with the designated Government representative. This Form will be provided to the KO and become part of the official contract file.

Identification of Contractor Employees All contract personnel attending meetings and working in other situations where their Contractor status is not obvious to third parties are required to identify themselves as such to avoid creating an impression in the minds of members of the public that they are USACE officials. They must also ensure that all documents or reports produced by Contractors are suitably marked as Contractor products or that Contractor participation is appropriately disclosed.

Contractor Travel Contractor will be required to travel to Pacific County, Washington for the survey. Contractor will be authorized travel expenses consistent with the substantive provisions of the Joint Travel Regulation (JTR) and the limitation of funds specified in this contract. All travel requires Government approval/authorization and notification to the COR. Travel expenses must be included in the proposal submitted in response to the request for proposals.

Other Direct Costs This category includes travel (outlined in 1.6.13), sampling vessels, sampling equipment and supplies, report reproduction, and shipping expenses.

Data Rights The Government has unlimited rights to all documents/material produced under this contract. All documents and materials produced under this contract will be Government owned and are the property of the Government with all rights and privileges of ownership/copyright belonging exclusively to the Government. These documents and materials may not be used or sold by the Contractor without written permission from the KO. All materials supplied to the Government will be the sole property of the Government and may not be used for any other purpose. This right does not abrogate any other Government rights.

Organizational Conflict of Interest Contractor and subcontractor personnel performing work under this contract may receive, have access to or participate in the development of proprietary or source selection information (e.g., cost or pricing information, budget information or analyses, specifications or work statements, etc.) or perform evaluation services which may create a current or subsequent Organizational Conflict of Interests (OCI) as defined in FAR Subpart 9.5. Notify the KO immediately whenever it becomes aware that such access or participation may result in any actual or potential OCI and promptly submit a plan to the KO to avoid or mitigate any such OCI. The Contractor’s mitigation plan will be determined to be acceptable solely at the discretion of the KO and in the event the KO unilaterally determines that any such OCI cannot be satisfactorily avoided or mitigated, the KO may affect other remedies as he or she deems necessary, including prohibiting the Contractor from participation in subsequent contracted requirements which may be affected by the OCI.

Laboratory Requirements Certification, accreditation, and/or license documentation will be required as part of the proposal. This documentation includes the name and location of the prime laboratories and any other laboratory(ies) to be used. The state(s) in which the laboratory is certified/accredited or licensed (if no certification/accreditation is available/required) will be provided in the documentation. If any laboratory fails to meet project specific requirements at any time, the KO will direct the contractor to procure services from a laboratory which meets project specific requirements.

Analytical (Chemical) Testing The laboratory to be used must be accredited by the Washington State Department of Ecology, the National Environmental Laboratory Accreditation Program (NELAP), or equivalent certification approved by the DMMP. Accreditation must be held for all analytes required to be reported and for the analytical methods proposed in the sampling and analysis plan.

Bioassay and Geotechnical Testing The laboratory must be accredited by the NELAP.

Subcontracts The Contractor shall not subcontract any portion of this contract to any party other than those identified in the proposal submitted in response to this RFQ without written notification to and written authorization from the KO.

PART 2 - DEFINITIONS AND ACRONYMS

DEFINITIONS

Contractor A supplier or vendor awarded a contract to provide specific supplies or service to the USACE. The term used in this contract refers to the prime.

Contracting Officer (KO) A person with authority to enter into, administer, and or terminate contracts, and make related determinations and findings on behalf of the USACE. The KO is the only individual who can legally bind the USACE.

Contracting Officer's Representative (COR) The COR is an individual designated and authorized in writing by the KO to perform specific technical or administrative functions. This individual has authority to provide technical direction to the Contractor as long as that direction is within the scope of the contract, does not constitute a change, and has no funding implications. This individual does NOT have authority to change the terms and conditions of the contract.

Defective Service A service output that does not meet the standard of performance associated with the PWS.

Deliverable Anything that can be physically delivered but may include non-manufactured things such as meeting minutes or reports.

Key Personnel Contractor personnel that are evaluated in a source selection process and that may be required to be used in the performance of a contract by the Key Personnel listed in the PWS. When key personnel are used as an evaluation factor in best value procurement, an offer can be rejected if it does not have a firm commitment from the persons that are listed in the proposal.

Physical Security Actions that prevent the loss or damage of USACE property.

Quality Assurance The USACE procedures to verify that services being performed by the Contractor are performed according to acceptable standards.

Quality Control All necessary measures taken by the Contractor to assure that the quality of an end product or service will meet contract requirements.

Subcontractor One that enters into a contract with the prime Contractor. USACE does not have privity of contract with the subcontractor.

Work Day The number of hours per day the Contractor provides services in accordance with the contract.

Work Week Monday through Friday, unless specified otherwise.

ACRONYMS

DMMU Dredged Material Management Unit

PART 3 - GOVERNMENT FURNISHED PROPERTY, EQUIPMENT, AND SERVICES

SERVICES

The QAR will coordinate review of the SAP and sediment characterization report with the DMMP agencies and provide combined agency comments to the Contractor on these documents. The QAR will also coordinate with the DMMP agencies and provide guidance on any technical issues that arise.

FACILITIES

Not applicable.

UTILITIES

Not applicable.

EQUIPMENT

Not applicable.

MATERIALS

USACE will provide the following electronic information:

· The most recent hydrosurvey data for Willapa Bay Federal features (Tokeland, Bay Center, and Nahcotta) in .xyz format. Data is available online on the eHydro website: http://navigation.usace.army.mil/Survey/Hydro#state=WA

· GIS shapefile or HYPACK files delineating the project footprint to be characterized.

PART 4 - CONTRACTOR FURNISHED ITEMS AND SERVICES

GENERAL

Furnish all supplies, equipment, facilities and services required to perform work under this contract that are not listed under Section 3 of this PWS.

SECRET FACILITY CLEARANCE

Not Applicable.

MATERIALS

Provide all applicable materials necessary for the successful completion of this contract including but not limited to sampling supplies, shipping supplies, lab supplies, and report publishing materials and expenses.

EQUIPMENT

Provide all needed equipment to meet the requirements under this PWS, including but not limited to, sampling vessels, navigation equipment, sampling equipment, data analysis software, and computers.

PART 5 - SPECIFIC TASKS

BASIC SERVICES

Provide all management, personnel, equipment, supplies, facilities, transportation, tools, materials, supervision, and applicable licenses and permits necessary to perform the services described in this PWS.

BASE ITEMS

CLIN 1 – SAP Preparation Develop and submit a Sampling and Analysis Plan (SAP) that follows the guidance found in the most recent DMMP User Manual (DMMP 2025); updates to DMMP implemented via the sediment management annual review meeting (SMARM) process; and the specific requirements in this PWS. The purpose of the SAP is to provide a clear detailed description of how the project will be executed.

Detailed requirements for this CLIN are described in the following subsections.

Submittal Procedures Submit the draft SAP to the QAR for review. Revise and re-submit in response to comments received until all comments have been addressed.

Between the time that the SAP is approved by USACE, and the commencement of work outlined in the SAP, a pre-sampling conference call may be held at the request of USACE.

No sampling activities may occur until the QAR has approved the SAP. The SAP must be approved at least seven (7) days before sampling is scheduled to occur.

Project Description Provide a general project description; description of the project organization, including a chart showing roles, responsibilities, lines of authority, and key project personnel, including proposed subcontractors; and contact information.

Describe the means and methods to complete the required work. Prepare supporting figures and tables. The SAP must contain the information outlined in Section 6 of the DMMP User Manual in sufficient detail to allow the agencies to evaluate the adequacy of the sampling and analysis program.

Characterization volumes The Government estimated characterization volumes are estimated based on the bathymetric survey conducted in March 2025 bathymetric survey data (Table 1).

Recalculate the volumes in all sections (to include side slopes) to verify that the original estimates are sufficient and to guide sample placement. Use the project footprints and characterization depths as shown in Table 1. Include 2H:1V side slopes in volume calculations.

The Government may exercise options for additional sampling collection if needed based on the Contractor’s proposed sampling design.

Determine the number of required DMMUs and Minimum Samples All material will be considered homogenous for the purposes of this contract. The DMMP project ranking for all sub-areas is Low.

No subsurface DMMUs will be used for this project. Grab samples will be used to characterize all DMMUs. In low ranked areas, the DMMP minimum sampling requirement for homogenous sediment is one field sample for every 8,000 CY. The DMMU volume limit for low-ranked homogenous material is 60,000 CY. Due to a majority of the COCs being non-detected at all Willapa Bay sites in 2020, the DMMP is not requiring the field sampling frequency of one sample per 8,000 CY or the maximum volume of a DMMU of 60,000 CY as outlined in the DMMP User Manual.

Table 1 summarizes the project details, required DMMU subdivisions, and estimated anticipated number of grab samples and DMMUs required. For pricing purposes, eight (8) DMMUs are included in the base program. Contract options may be exercised to accommodate additional DMMUs in the approved SAP.

Target sampling stations Place target sampling stations within each DMMU to provide an adequate spatial and volumetric representation of the dredging prism. Target sampling stations on shoals shallower than the operational depth, not the characterization depth. Provide figures and tables that provide the following information:

· DMMU locations and IDs

· Target sampling locations with sampling coordinates, an anticipated mudline elevation (ft MLLW), and sampling methodology.

Quality Control Procedures Develop and maintain Quality Control procedures to ensure services are performed in accordance with this PWS and to identify, prevent, and ensure non-recurrence of defective services. Include with the SAP, at a minimum:

· A description of the quality control organization, including a chart showing key personnel, roles, and lines of authority. The chart can be combined with the main project organization chart detailed in Section 5.2.1.2.

· Description of the quality control procedures and methods to complete the required work.

· Procedures for identifying, tracking, and correcting deficiencies.

Site-Specific Health and Safety Plan Prepare a brief, site-specific Health and Safety Plan, in accordance with the USACE Safety and Health Requirements Manual (EM 385-1-1, current version) that addresses health and safety issues relevant to field activities associated with this project.

Other Elements and Requirements to be included in the SAP In addition, please note the following:

· Sample volume must provide sufficient material for all potential testing in the base CLINs and options, including testing of the full suite of bioassays, additional ammonia/sulfides testing, and potential purging prior to conducting bioassays.

· Description of bioassays and associated QA/QC requirements must include both termination protocols (standard and re-suspension) for the larval test, along with the criteria that will be used to determine which protocol to use. Species-selection criteria must also be included for the amphipod and larval tests. Only the ash-free dry-weight endpoint will be used for the Neanthes test.

Special Chemicals of Concern:

The chemicals of concern (COCs) to be analyzed under the base program are identified under CLIN 3. Provide the measurement performance criteria for each analysis in the SAP.

CLIN 2 – Sample Collection and Processing Collect grab samples from thirty-six (36) target sampling locations and process/composite sample material within each DMMU for physical, chemical, and potential biological analyses in accordance with the approved SAP generated in CLIN 1. All samples are to be taken in the navigation features between stations listed in Table 1. Dredging in the Federal features is anticipated to begin in summer 2026, and sampling must be completed prior to start of dredging.

Provide a vessel (or other sampling platform) and sampling equipment capable of collecting grab samples of sediment within the areas identified in Figure 2Figure 5. Positioning requirements are as follows:

· Horizontal Positioning. The vessel and vessel navigation system must be capable of positioning the sampling device within 10 feet of target sampling locations, maintaining position during sampling, and recording sample positions with a minimum of 3-foot accuracy.

· Vertical Positioning. On-board instrumentation/equipment must be capable of determining water depths and/or mudline elevation to within 6 inches (corrected and converted to MLLW). A variety of tools are available to establish vertical control and determine accurate depth measurements. These include – but are not limited to – tide boards, NOAA tide stations with real-time water levels, electronic tide gauges (“Hazen” gauges), and real time kinematic global position system (RTK GPS) instrumentation. Per Section 7.3.2 of the DMMP User Manual, the SAP must clearly describe which tools and procedures will be used to ensure accurate vertical measurements.

This bid item includes the vessel, captain, crew, transportation, lodging, per-diem, and mobilization/demobilization costs for sample collection. Additional vessel, captain, crew, lodging, per-diem, and transportation costs to collect additional samples beyond the base CLINs are covered by Option CLINs.

Provide personnel experienced in sediment sampling to collect the grab samples onboard the vessel; and to log, photograph, and composite those samples (either onboard the vessel or in a processing facility). Collect sufficient sediment volume from each DMMU to fulfill the volume requirements identified in the SAP, to include a bioassay archive, and to meet the base analytical requirements in CLIN 3.

Provide appropriate sample jars, labels, equipment cleaner, chemicals for sampling sulfides, sampling equipment (stainless steel bowls and spoons, etc.), cold packs, and coolers for holding samples in the field until they can be transported to the laboratory for processing and analysis. Provide archive sample storage for 6 months following completion of sampling.

Deliver or ship sediment samples to laboratory facilities for chemistry and biological analysis. Ensure that archived samples are maintained at the proper storage conditions. Initiate and document sample chain-of-custody.

Record field sample logs (collection and processing) for each grab sample. Include depth to mudline and written observations regarding sediment characteristics (grain size, presence of woody debris, sheen, odor, biological material, etc.). Take representative photographs of the material collected.

Submit a daily sampling/progress report via email to the QAR at the end of each sampling day, summarizing the events of the day, any problems encountered, and plans for the next sampling day.

Participate in a pre-sampling conference call with the DMMP agencies prior to field work. The Contractor’s project manager and the technical lead for the sampling team must participate on the call. Other members of the sampling team are encouraged to participate.

Coordinate with the local waterway users of the Willapa Bay Federal Navigation Features to avoid any delays associated with vessel traffic or berth use.

Hazards and delays may arise from adverse weather conditions during sediment sampling. Anticipate and account for costs associated with potential weather delays before submitting their bid. Complete weather records and reports may be obtained from any National Weather Service Office, i.e., NOAA.

Waste Management. All disposable sampling materials and personal protective equipment used in sample collection and processing should be placed in garbage bags or other appropriate containers and disposed appropriately. Excess sediment may be returned to the waterway in the general location from which it was collected. The Contractor bears the cost for any other type of disposal. Detail disposal procedures in the SAP.

CLIN 3 – Physical and Chemical Analysis of Sediment Samples Perform physical and chemical laboratory analysis of sediment samples collected. The Palix River access channel DMMU, represented by one (1) composite consisting of three (3) grab samples, will be tested only for grain size, total organic carbon, and total solids.

Analytical laboratories must be accredited as defined in Section 1.6.17 and be familiar with the DMMP sampling program. Comprehensive Level IV (Form 1’s, instrument outputs, calibrations, QA/QC, etc.) electronic data reports are required.

Sediment Conventionals Analyze the DMMU composite samples for the required sediment conventional analyses following recommended methods and DMMP-specific modifications presented in Section 8.1 of the 2021 DMMP User Manual (or more recent equivalent).

Chemicals of Concern (COCs) Analyze DMMU composite sediment samples for sediment conventionals and standard marine DMMP COCs except for TBT. Analysis of dioxins/furans is not required. The COCs to be analyzed are listed in Table 3.

Pricing is to be based on the standard 30-day turnaround time by the chemistry labs.

Quality Assurance Requirements Include the Chemistry Quality Assurance (QA) elements listed in Table 8-6 of the DMMP User Manual, which includes the following (in addition to other standard laboratory QA):

· Laboratory replicates and/or matrix spike/matrix spike duplicate (frequency of analysis = 1 for every 20 samples or 1 per batch, whichever is more frequent) for standard DMMP chemicals of concern. See Table 8-6 in the DMMP User Manual.

· Laboratory triplicates (frequency of analysis = 1 for every 20 samples or 1 per batch, whichever is more frequent) for all sediment conventionals and physical tests.

Collect sufficient volume of sediment from appropriate DMMUs to provide sufficient material for the required laboratory QA/QC samples. Conduct lab replicates for each analysis type on sample aliquots from the same sample jar. The intent of the replicates is to get a measurement of analytical variability, not field or sampling variability.

Take all possible means, including additional cleanup steps, re-extraction, the use of SIM, etc. to ensure that reporting limits are at or below the DMMP SLs and State of Washington Sediment Quality Standards (SQS). This is especially true for DMMUs that have no detected exceedances of an SL. If it is not possible to bring reporting limits (RLs) below the SLs, review the raw data and report the nondetect results at the method detection limit if appropriate. Flag detected analytes at concentrations between the method detection limit and RL as estimated values (J-flag). Report method detection limits and RLs for all nondetect results.

Provide the measurement performance criteria for each analysis in the SAP (CLIN 1). Data rejected by the data validator or the USACE may require re-extraction, additional cleanup, reanalysis, or resampling at the Contractor’s expense. Notify the QAR immediately in the event that data is rejected.

Pricing for this CLIN must include comprehensive electronic laboratory data deliverables sufficient to conduct Stage 4 data validation.

Tiered Bioassay Analysis Collect sufficient sediment from each DMMU to run bioassays. Provide preliminary analytical data to the QAR within 72 hours of receipt by the Contractor, with exceedances of DMMP screening levels, bioaccumulation triggers and maximum levels noted.

CLIN 4 – Data Validation Perform data validation using guidelines from EPA and the DMMP User Manual for all sediment conventional and chemistry data generated during this investigation. Data validation stages are defined by EPA (EPA 2009). A minimum of Stage 2b data validation is required for all physical and chemical data. Identify the data validator (if a subcontractor) in the SAP.

Notify the QAR within 24 hours if deviations from the data quality objectives are found by the validator.

Provide the data validation report/s electronically to USACE for review as an appendix to the sediment characterization report (CLIN 5). Include, in the validation report, a complete listing of data qualifiers assigned by the validator along with the justification for these assignments.

Pricing for this CLIN is to cover data validation for CLIN 3 data only. Data validation associated with option CLINs must be included in the pricing for those CLINs.

CLIN 5 – Sediment Characterization Report Prepare a sediment characterization report (SCR) that includes the following information:

a. Summary of sampling, compositing, physical testing, QA/QC procedures and any deviations from the approved SAP.

b. Table(s) with sampling station coordinates (both latitude/longitude in decimal degrees (DD) with six decimal places, and State Plane North coordinates), date collected, measured water depth at each location (decimal feet), tidal stage at the time of sampling each station (decimal feet), and tide-level-corrected (ft MLLW) mudline elevations for DMMUs and compositing information.

c. Figure(s) showing target and actual sampling locations, with DMMU outlines.

d. Table with compositing scheme.

e. Table cross-referencing laboratory sample IDs with dredge material samples/reference/z-sample IDs and indicating the analyses done for each DMMU, reference, and z-sample.

f. Table(s) with analytical results for conventional testing and standard chemical testing compared to the DMMP guidelines (and Washington Sediment Management Standards) with both laboratory and validation qualifiers provided. Highlight exceedances of SLs, BTs and MLs. Provide grain size data in the following categories: gravel, sand, silt, clay, fines (as defined in the DMMP User Manual). Provide both total and constituent concentrations for LPAH, HPAH, benzofluoranthenes, DDX, chlordane and PCB Aroclors.

g. A summary of QC data for all analytical testing, including validation results.

h. Appendices to include daily sampling/progress reports; field notes; core collection and processing field logs and photographs; chain-of-custody forms; data validation reports.

i. Comprehensive laboratory electronic data deliverables (electronic only), including a case narrative from the laboratory.

j. Shapefiles or a geodatabase with DMMU boundaries; target and actual sampling locations; latitude and longitude; state plane coordinates and actual mudline elevation.

k. If biological testing is triggered, include this additional data:

1) A summary of bioassay water quality data, positive control data and comparison of controls and references to their performance standards.

2) Interpretation of bioassay data, including appropriate statistical analyses using BioStat.

3) Description of any purging procedures conducted and the data resulting from those procedures.

4) Bioassay lab reports as an appendix.

Submit a draft SCR to the COR for review. Revise and re-submit the SCR in response to comments received until all comments have been addressed.

Submit the SCR in Word or Excel format in addition to PDF versions of the report text, tables, figures, and appendices. Include the full laboratory packages, validation report, field notes, core logs, photographs, ArcGIS files and any other information or data associated with the project.

Include procedures and results from all exercised options in the report. However, for the purpose of pricing this CLIN, only include reporting associated with the required CLINs. Incremental reporting costs associated with option CLINs are to be included in the pricing for those options.

CLIN 6 – EIM Data Entry Prepare and submit location and results files in using the Department of Ecology’s Environmental Information Management (EIM) templates in Microsoft Excel (.xls or .xlsx) format. to the Department of Ecology’s Environmental Information Management (EIM) database in accordance with guidance provided by USACE and Ecology. Submit the draft EIM files to the USACE QAR. Address comments on the draft files and submit final files to Ecology the USACE QAR. This CLIN is not considered complete until Ecology has received and accepted all EIM data generated for this project.

Pricing for this CLIN is to cover EIM submittal for data generated for base CLINs only. Incremental EIM submittal costs associated with option CLINs are to be included in the pricing for those options.

OPTION ITEMS

Award of Options In accordance with FAR 52-217-7 OPTION FOR INCREASED QUANTITY, the KO may exercise any options by written notice to the Contractor within the Period of Performance, but no less than 15 days prior to the end of the Period of Performance. The Period of Performance may be extended to accommodate performing Options.

CLIN 7 – Sampling/Processing of 4 Additional Grab Samples (Option) Collect and process an…