MEMORANDUM - Port of Bellingham

MEMORANDUM - Port of Bellingham
                                                                                    ACTION ITEM #
TO:              Rob Fix                                    DATE: Januaiy 22, 2020

FROM:            Brian Goura^ g^)                           COPIES: Ben Howard, Jennifer Alien
                                                                       Alan Birdsall

SUBJECT:         Central Waterfront Cleanup Site - PSA with Landau Associates

Approve a motion authorizing the Executive Director to execute a Professional Services Agreement to perform
the remedial design and permitting for the Central Waterfront cleanup site in the amount of $499,700 plus a 10%
contingency for a total authorized budget of $549,670.

The Central Waterfront cleanup Site is comprised of approximately 55 acres of industrial property that has been
utilized for bulk fueling, boat yard operations, rock crushing, and municipal waste disposal. Contamination from
these historic operations require remediation under the Washington State Department of Ecology (Ecology)
Model Toxics Control Act (MTCA). The Port and the City ofBellingham (City) entered into Agreed Order No.
DE 3441 with Ecology to perform a Remedial Investigation and Feasibility Study (RI/FS) for the Site. The first
amendment to the Agreed Order required the Port and City to perform an interim action to excavate and remove
petroleum contaminated soil and sediments from a portion of the Central Waterfront Site. The second amendment
to the Agreed Order required the Port and City to develop a Cleanup Action Plan (CAP) that provides the basis to
enable Ecology to select a final cleanup approach for the Site.

With the RI/FS complete, the Port, in coordination with the City and Ecology, have finalized a Cleanup Action
Plan (CAP) for the Site, which describes how the Preferred Alternative will be implemented. The Port, City, and
Ecology have entered into an third Agreed Order amendment (No. DE 3441) for the remedial design and
permitting of the final cleanup action approach.

The Port advertised a request for professional services (RFPS) to provide remedial design and permitting services.
Two qualified environmental firms submitted statement of qualifications and Landau Associates (Landau) was
selected as the most qualified. The attached scope of work and budget describes the work to complete a Pre-
Remedial Design Investigation and Engineering Design Report. It is anticipated that the PSA will have future
amendments to adaptively manage project scope and budget based on regulatory and cleanup action requirements.
Additional tasks may include final design, construction plans and specifications, and construction management.

Landau estimates a cost of $499,700 for completing the attached scope of work at the Central Waterfront Site. A
10% contingency is being proposed, bringing the authorized total to $549,670. An existing MTCA grant will
reimburse 50% of eligible costs associated with this PSA. A portion of the remaining 50% will be reimbursed
through the Port's pre-funded AIG insurance package and is managed under existing accounts for Roeder Avenue
Landfill, Chevron, Colony Wharf, and Olivine subareas.

The cleanup efforts at the Central Waterfront site supports the Port's 2020 Strategic Budget Environmental
Objective No. 2: Work with Department of Ecology to move forward on high priority state-listed MTCA
cleanup sites including the Central Waterfront with a goal of getting "shovel ready" and prioritized for MTCA
Grant funding.

Staff Recommends Approval.

Attachment: Proposal for Remedial Design and Permitting - Central Waterfront Site
MEMORANDUM - Port of Bellingham
IA        LANDAU

January 14,2020

P.O. Box 1677
Bellingham,WA 98227-1670

Attn: Mr. Ben Howard

Transmitted via email to:

Re: Proposed Scope of Services and Cost Estimate
        Phase I of Central Waterfront Remedial Design Services -
        Pre-RemediaI Design Investigation and Engineering Design Report
        Central Waterfront Cleanup Site
        Bellingham, Washington

Dear Mr. Howard:

Landau Associates, Inc. (LAI) is providing this proposed scope of services and estimated budget to
support the Port of Bellingham (Port) with the next phases of work at the Central Waterfront Cleanup
Site (Site) in Bellingham, Washington, specifically Remedial Design and Permitting Support.The
current phase of the project, for which this scope of services and estimated budget have been
prepared, includes preparation and finalization of a Pre-Remedial Design Investigation (PRDI) Work
Plan, implementation of the PRDI, and preparation and finalization of an Engineering Design Report
(EDR). A description of the proposed scope of services and the estimated budget are provided below,
divided into the following three project tasks:

Project Tasks

    1. Project Management

    2. Pre-Remedial Design Investigation Work Plan

    3. Pre-Remedial Design Investigation

    4. Engineering Design Report

Site and Project Background
The Site is listed by the Washington State Department of Ecology (Ecology) as requiring remediation
under the Model Toxics Control Act (MTCA). The Site is part of a historical and active waterfront
industrial property and is located between the I&J Waterway and Whatcom Waterway in Bellingham,
Washington. Contamination from historical landfilling and industrial activity, including boatyard
operations, bulk fueling facilities, rock crushing, and other activities, has impacted upland soils and
groundwater with a variety of constituents such as landfill refuse, total petroleum hydrocarbons
(TPH), polycyclic aromatic hydrocarbons (PAHs), metals, and landfill gas (LFG). In March 2018, Ecology

           130 2nd Avenue South • Edmonds, Washington 98020 • (425) 778-0907 •
MEMORANDUM - Port of Bellingham
Proposal: Port of Bellingham/Central Waterfront PRDI and EDR Landau Associates

approved a Remedial Investigation/Feasibility Study (RI/FS) of the Site and assessed a range of
cleanup options.

Based on this previous work, Ecology is finalizing a Cleanup Action Plan (CAP) to address
contamination at the Site. The remedy described in the draft CAP includes:

     • Soil hot spot removal of approximately 1,000 cubic yards of petroleum contamination

    • Reduced permeability capping in the landfill footprint and C Street areas

    • Physical barrier capping in the Hilton Avenue areas

    • Monitored natural attenuation to address residual contamination in groundwater in the
         C Street area

    • Engineering controls to prevent soil vapors and LFG migration into buildings and associated
         human health risk through indoor air inhalation

    • Institutional controls including environmental covenants.

The Port is finalizing an amendment to the existing Agreed Order with Ecology to include remedial
design and permitting for the cleanup action. The proposed scope of services and associated cost
estimate have been prepared to assist the Port with the requirements anticipated in the next phases
of the Agreed Order.

Proposed Scope of Services
The scope of services presented herein was prepared to plan, coordinate, implement, and manage the
early phases of the remedial design and permitting effort for the Site. It is LAI's understanding that
subsequent phases of work, including the final phases of remedial design and development of
construction plans and specifications, will be managed under future amendments to a professional
services agreement as a separate scope of work. The services required to complete the first phase of
the project are discussed below, separated by task.

Task 001: Project Management and Coordination

Project management activities, stakeholder coordination, and support and consideration of ongoing
Port or tenant activities will be required to effectively manage and implement this project. The level
of effort included under Task 001 relates specifically to support for the Port's financial management
requirements, including financial tracking, budget forecasting, internal reporting, etc.

Project management and coordination costs, as they relate specifically to Tasks 002 through 004, have
been included directly with each task described below.

In general, project management and coordination activities are anticipated to include the following:

    • Project management: Invoicing and budget tracking; financial performance tracking and
        reporting; internal team coordination and task management; coordinating with the Port;

January 14,2020
MEMORANDUM - Port of Bellingham
Proposal: Port of Bellingham/Central Waterfront PRDI and EDR Landau Associates

         assisting the Port with scope development, cost, and schedule projections for planning
         purposes to support funding reimbursement for the project; and contracting with drillers,
         utility locators, land surveyors, other required vendors, and an environmental laboratory.

     • Port meetings: Assumes one to two in-person meetings (at the Port's offices in Bellingham)
         with Port Environmental, Engineering, and Facility Management to discuss PRDI strategy and
         the primary aspects of the remedial design.

     • Coordination activities: Communicating with project stakeholders (upon direction from the
         Port), which may include Ecology, Site tenants, the City of Bellingham (City), the Trustees, or
         other involved parties, if needed and as identified by the Port.

     • Additional project management or coordination activities may include support for as-needed
         (third-party) document review and coordination with technical teams overseeing engineering
         and cleanup action at neighboring Port properties. Moffat & Nichol will be assisting the LAI
         team third-party document review activities, as needed.

The estimated cost for this work plan task is: $ 10,700.

Task 002: Pre-Remedial Design Investigation Work Plan

This task includes preparation and finalization of a PRDI Work Plan to conduct a focused,
supplemental investigation with the objective of addressing data gaps necessary to inform the
preparation of design documents. The existing Site data have been generated from more than
20 years' worth of investigation and evaluation work at the Site. Available Site data were sufficient to
address MTCA requirements for finalizing the RI/FS report, but are not sufficient to prepare the
remedial design to the detail necessary to effectively satisfy the requirements of the Agreed Order or
support bidding and construction of the cleanup action. Therefore, further investigation is required
and a work plan will be prepared and finalized to manage the necessary level of further Site

The primary components of this task will include the following:

Historical Data Coordination and Review

This subtask includes coordination with the Port and the Site's previous contractors (as identified by
the Port) to obtain data and information specifically relevant to support the PRDI and inform the
approved remedial design. To the extent practicable. Site information will be provided by the Port in
its raw format (e.g., CAD, GIS, EDDs, data files, etc.) to promote its efficient transfer and management.
If raw files are not available, paper copies of the materials in their original format (color, 11" x 17",
etc.) will be provided to supplement those materials available in raw file format. Ideally, Site
environmental analytical data will be transferred in a manageable database format (e.g., EQulS) or
alternate electronic presentations (e.g., electronic data deliverables [EDDs]).

Historical data and documentation may include, but are not limited to, prior environmental
investigation reports; geotechnical data and reports; remediation reports; monitoring well location

January 14,2020
MEMORANDUM - Port of Bellingham
Proposal: Port of Bellingham/Central Waterfront PRDI and EDR Landau Associates

and construction data; agency documentation and relevant correspondence; Site survey data; LFG
measurements; existing building schematics and construction-related information; interim action
planning, design, and construction (i.e., as-built) information; existing remedial design information;
adjacent cleanup site documentation (as it relates to the Site's remedial design and implementation);
stormwater permit information (for both the Port and Site tenants); and other related materials that
contain information pertinent to the remedial design.

The estimated cost for this work plan subtask is: $ 14,900.

Site Survey Program

LAI will contract with Wilson Engineering, LLC (Wilson) to provide land surveying support for the
project (Wilson will contract directly with Applied Professional Services, Inc. for utility locate services
in support of the Site survey). This survey will cover the full extent of the cleanup area, as defined by
the Agreed Order and the final CAP. Updated survey information will aid in supporting effective
development of the design package. Wilson is currently working on survey programs at adjacent
cleanup sites on Port property and this existing information will be used, to the extent practicable, to
expedite completion of the Site survey and for secondary confirmation of survey results.

As the planned survey program is focused on providing support for soil removal and remedial design,
most of the surveying can be adequately served by using a tightly controlled, unmanned aerial vehicle
(drone) for most of the Site. This technology, if adequately controlled, can produce large-area
topography at the ± 5-centimeter (cm) (± 0.16-foot) level of local precision. The proposed survey
scope also includes direct capture of approximately 200 higher-precision elements, like monitoring
wells, catch basins, filter structure, and manhole rims, etc.

The surveyor will coordinate acquisition of underground utility marks, to be provided by a private
locate contractor. The survey scope also assumes some amount of conventional direct-measure of

topography to aid in design of structures and drainage pathways across the generally flat Site. For
scoping purposes, an estimated number of ground-truth checks of sensitive sites and conventional
capture of various critical drainage features (up to 100 maximum, is assumed).

The estimated cost for this work plan subtask is: $ 54,300.

Preliminary Site Reconnaissance (Pre-Work Plan Development)

A Site reconnaissance will be required by LAI's technical team to further develop Site-specific
information as it relates to informing effective execution of the PRDI and development of the
remedial design materials. Depending on the data collection needs, more than one preliminary Site
visit may be required, both for data-gathering efforts and advanced PRDI planning/coordination with
subcontractors and vendors. To the extent possible, LAI anticipates that Port personnel will
accompany LAI staff, subcontractors, and/or vendors during preliminary Site reconnaissance activities
and will also be available for interviews and additional data gathering/exchange, as needed.

January                                             14,2020                                          4
MEMORANDUM - Port of Bellingham
Proposal: Port of Bellingham/Central Waterfront PRDI and EDR Landau Associates

During the course of the preliminary Site reconnaissance activities, the following will be considered:

    • Visual observation of existing pavement, surface types, and ground cover conditions to define
         areas needing further assessment and exploration, including access constraints to be managed
         in support of further exploration

    • Identification and inventory of the potential presence, condition, and relevance of the existing
         groundwater monitoring well network at the Site

    • Visual observation of tenant stormwater treatment systems or other features that may be
         affected by changing drainage patterns

    • Interviews and data exchange with Port staff to continue to update Site knowledge (including
         groundwater monitoring well network history/information, previous Site exploration concerns
        to be managed, tenant coordination requirements, identification of areas of the existing
        stormwater systems that may have existing drainage concerns that would warrant camera
         inspection, etc.)

    • Identification of the potential presence, condition, and relevance of current LFG sampling

    • Evaluation of the interior of the Technology Building (i.e.. Tissue Building) for air quality
        sampling ports associated with the existing LFG mitigation system, to prepare for subsequent

    • Specific information (i.e., photographs, etc.) of buildings and pavement at the Site to prepare
        for the air quality sampling program; access to building interiors, crawl spaces, etc. (if

The estimated cost for this work plan subtask is: $ 11,600.

Work Plan Preparation (Draft and Final)

After completing the above-noted task elements, LAI will prepare a draft PRDI Work Plan for the
Port's internal review and consideration. LAI assumes that a working meeting (at the Port's offices in
Bellingham) will be conducted with Port staff to discuss the primary strategies and objectives outlined
in the draft Work Plan in advance of submittal to Ecology. After addressing/incorporating the Port's
input, as appropriate, LAI will coordinate submittal, review, and final approval by Ecology. To the
extent practicable, the Work Plan will incorporate existing and previously Ecology-approved
investigation management elements (i.e.. Sampling and Analysis Plan, Q.uality Assurance Project Plan,
etc.) to help streamline and expedite the Work Plan preparation and review process.

However, because much of the previous data gathering was focused on characterization and may not
directly inform remedial design requirements, some level of effort has been included to revise those
existing documents to cover additional data-gathering methods and procedures, as appropriate. The
Work Plan will provide sufficient detail to allow Ecology to understand the scope of the intended
activities, including figures showing exploration locations and tables summarizing the planned sample
collection and analytical methods.

January 14,2020
MEMORANDUM - Port of Bellingham
Proposal: Port of Bellingham/Central Waterfront PRDI and EDR Landau Associates

The Work Plan will outline the methods and procedures for necessary data gathering and Site
evaluation to inform preparation of the EDR. In general, the Work Plan will outline the rationale for
the following:

    • Additional characterization of the C Street Hot Spot area

    • Monitored natural attenuation evaluation in the C Street Hot Spot area

    • Landfill gas evaluation

    • Existing surface capping and stormwater controls

    • Site hydraulic conditions and containment.

Given the complexity of the approved design remedy, at least two data-gathering (i.e., field
mobilizations) and evaluation efforts will likely be required, to support the specific needs of each
remedial design element. The following text provides an overview of the various components to be
included in the Work Plan based on the specific needs of the varying elements of the remedial design

C Street Hot Spot Evaluation

The selected cleanup action in the Site CAP includes hot spot soil removal in the C Street Properties
subarea. This hot spot removal has been defined as removing soils with concentrations of total
petroleum hydrocarbons (TPH) that exceed a remediation level of 19,000 milligrams per kilogram
(mg/kg), which is the estimated residual saturation concentration for light non-aqueous phase liquid
(LNAPL; free product) associated with the former Chevron Terminal Facility (within the C Street

The area defined in the CAP for hot spot removal appears to be based on limited data and does not
include additional locations where TPH concentrations greater than 19,000 mg/kg were identified.
The boring information for previous investigations does not include global positioning system (GPS) or
survey data to precisely identify previous sampling locations. Due to the uncertainties in the exact
sampling locations associated with existing data, a limited supplemental soil investigation will be
required to more clearly define the vertical and horizontal extent of contaminated soil to be
excavated for the hot spot removal.

Monitored Natural Attenuation Evaluation (C Street Hot Spot Area)

The CAP also requires monitored natural attenuation (MNA) as a primary method ofgroundwater
cleanup (in the areas of the former Chevron Terminal Facility area with TPH contamination). The
selection of MNA for groundwater cleanup is derived primarily from TPH data trends (which is a
strong indicator of the occurrence of natural attenuation). However, there has been only limited
collection and evaluation of typical MNA parameters (e.g., sulfate, nitrate, methane), which are
needed to provide direct evidence that biodegradation of TPH is occurring, to understand how it
might be enhanced, and to establish baseline conditions by which MNA progress can be assessed.

January 14,2020
MEMORANDUM - Port of Bellingham
Proposal: Port of Bellingham/Central Waterfront PRDI and EDR Landau Associates

Additionally, the current condition of the existing groundwater monitoring network and its use for
future groundwater quality evaluation is unclear.

Based on these factors, a supplemental well survey and groundwater investigation will be required to
1) identify the number and location of viable groundwater monitoring wells that can be used for
groundwater quality monitoring; and 2) collect representative groundwater quality data and MNA
parameters to develop baseline conditions and support longer-term performance monitoring in the
former Chevron Terminal Facility area. The Work Plan will rely on existing supporting documentation,
to the extent practicable, and will outline the procedures for further re-evaluation as needed to
support implementation of MNA.

Landfill Gas Evaluation

The Work Plan will provide the approach for collecting and evaluating the LFG data required for
design of a Site-wide mitigation plan. Data will be collected, to the greatest extent practicable, from
existing features and from LFG probes installed to provide additional subsurface data, where needed.
For the purpose of developing cost estimates for this proposal, it is assumed that the Work Plan will
outline details for collecting LFG samples for analysis.

Monitoring using a hand-held LFG analyzer (Landtec™ GEM 2000 or equivalent) will be completed at
the following locations:

    • Existing LFG monitoring probes (if present and in workable condition)

    • Existing groundwater monitoring wells (if the screened interval extends above the
        groundwater table allowing for the collection of soil-vapor data from the vadose zone)

    • Existing LFG building mitigation systems

    • Newly installed LFG probes in the Site's interior and along the perimeter.

Monitoring using a flame ionization detector (FID) will be completed at the following locations:

    • Inside buildings and other accessible enclosed structures.

Soil vapor samples will be collected for laboratory analyses (volatile organic compounds [VOCs] by
US Environmental Protection Agency [EPA] Method TO-15) at the following locations:

    • Newly installed LFG probes in the Site's interior, adjacent to existing buildings.

        Note: Due to ongoing commercial and industrial activities occurring in Site buildings, collecting
        air samples for Method TO-15 analyses can result in false positives. This can lead to obvious
        difficulties and additional costs when determining which detections are actually
        representative of vapor intrusion. For this project, the investigation will be aided by the
        elevated concentrations of methane shown to be present in the Site soil vapors. The higher
        concentrations of methane (and its higher British thermal unit [Btu] content) make it readily
        detectable by FID, and it is unlikely that other indoor activities are releasing methane at such
        concentrations that would interfere with the investigation. For these reasons, indoor air will

January 14,2020
MEMORANDUM - Port of Bellingham
Proposal: Port of Bellingham/Central Waterfront PRDI and EDR Landau Associates

         be evaluated for vapor intrusion at this Site using FID; follow-up indoor air monitoring using
         EPA Method TO-15 would be conducted only at buildings where the potential for vapor
         intrusion has been determined through FID and/or other investigation observations. As such,
         this cost proposal does not include the collection of VOC samples of indoor air. If this sampling
         is determined to be necessary, LAI will notify the Port and prepare a separate cost proposal
         for conducting these additional services.

The Work Plan will present procedures for evaluating the existing Site pavement and building slabs to
assess their integrity as it relates to providing a barrier to LFG ventilation. This evaluation will include
new sampling locations to collect data related to pavement surfacing, including pavement thickness,
condition, and composition. Additionally, new LFG monitoring probes will be installed to evaluate the
extent of LFG impacts and better establish where mitigation will be required.

Sampling procedures and timing will be presented in the Work Plan to guide the collection of relevant
data. The Work Plan will also present the general approach for modeling the natural processes of
waste degradation as they relate to gas generation, air emission estimates for permitting
considerations, and air-dispersion modeling. The modeling will be used to predict potential exposures
for Site workers and visitors near future LFG vents and to address MTCA requirements for cleanup
remedies involving air emissions.

Surface Capping and Stormwater Controls

In addition to determining the condition of existing Site surface conditions as they relate to the
planned capping of underlying contamination and providing for the controlled management of LFG,
LAI will also evaluate the current conditions of existing stormwater control features in advance of the
planned addition of capping elements (i.e., impervious surfaces) included as part of the remedial
design. Data gathering will produce a better understanding of Site stormwater drainage patterns and
peak stormwater flows in each drainage basin. This analysis will be described in the Work Plan and its
results will inform the design of necessary stormwater control retrofits and upgrades, which will be a
key component to successful implementation and management of the capping element of the
remedial action.

Site Hydraulics and Containment

Containment ofgroundwater at the Site is a key element of the remedial design. Currently, a clay
berm exists between the Site and the adjacent aerated stabilization basin (ASB). Historically, water
levels in the ASB and elevations in the neighboring Site groundwater have been comparatively flat,
within a half-foot of each other. When water elevations in the ASB are higher than that of seasonal
Site groundwater, the head difference results in a mounding ofgroundwater on the west side of the
landfill (as evidenced by localized higher groundwater elevations), which limits groundwater flow

from the Site.

January 14,2020
MEMORANDUM - Port of Bellingham
Proposal: Port of Bellingham/Central Waterfront PRDI and EDR Landau Associates

Previous Site investigations and the Port have indicated that redevelopment and reuse of the ASB is
under consideration. Because the clay berm and the adjacent ASB are directly influencing
groundwater containment dynamics at the Site, further evaluation into effective, long-term
groundwater containment options, in the event that the current makeup and use of the ASB changes,
is warranted to support the remedial design.

To further evaluate containment dynamics, wells will be installed adjacent to the ASB's perimeter to
further assess its connectivity and influence on upland groundwater. The Work Plan will include the
approach and rationale for installing these wells adjacent to the ASB. The Work Plan will detail the
methods and rationale for proposed hydraulic and groundwater analytical data collection.


LAI will prepare a draft PRDI Work Plan for the Port's internal review and consideration. As mentioned
previously, LAI anticipates a working meeting will be conducted with Port staff to review the strategy
and objectives included in the draft Work Plan. Given the size and complexity of the planned remedial
design program, LAI anticipates that a revised draft for subsequent internal Port review and comment
will be required. After addressing/incorporating the Port's comments on the draft versions of the
Work Plan, as appropriate, LAI will provide the formal draft Work Plan to Ecology for review and

LAI will work with the Port and Ecology to resolve any comments on the Ecology Work Plan submittal
and prepare a final Work Plan forthe Port's internal consideration. Upon resolution of any additional
comments by the Port on the final Work Plan, LAI will submit the final Work Plan to Ecology for final

For planning purposes, LAI assumes that the various versions of the Work Plan will be provided to the
Port and Ecology in electronic (PDF and Microsoft Word) format only. The level of effort also assumes
that Ecology will provide only brief comments to the submitted draft Work Plan and extensive
modification to the document or the proposed scope of PRDI activities will not be required.

The estimated cost for the draft and final work plans is: $ 42,200.

Task 003: Pre-RemediaI Design Investigation Implementation

After approval of the Work Plan, LAI will implement the PRDI in multiple phases. In advance of the
actual development of the PRDI Work Plan, LAI assumes that the PRDI will include the following


    • Approximately 1 week of Geoprobe® work for investigation of the C Street Hot Spot area,
         LFG sampling, and existing surface condition evaluations (e.g., pavement/asphalt thickness,
         quality, capping functionality).

January 14,2020
Proposal: Port of Bellingham/Central Waterfront PRDI and EDR Landau Associates

    • Advancement of up to 18 test pits in gravel-covered areas of the Site to assess gravel
        thickness, infiltration rates, and capping requirements. The test pits will be advanced to a
        maximum depth of 5 feet below ground surface (bgs) or until landfill refuse is reached.

    • Approximately 2 weeks of hollow-stem auger (HSA) drilling activities for installation,
        construction, and development of up to 10 new groundwater monitoring wells (to support
        further evaluation of the C Street Hot Spot area. Site hydraulic dynamics, and groundwater
        containment proximal to the ASB, and to assess MNA conditions in the C Street Hot Spot area,
        as appropriate), and install 8 perimeter LFG probes.

    • Soil sampling and screening in the C Street Hot Spot area to better define the extent of the
        hot spot to inform the remedial design.

    • Sampling/analysis ofTPH compounds and MNA parameters (C Street Hot Spot area).

C Street Hot Spot Area Investigation

For the C Street Hot Spot soil investigation, a direct-push drill rig will be used to investigate soils in the
southern portion of the Site to further delineate the vertical and horizontal extent of
TPH-contaminated soil with concentrations near or exceeding the residual saturation limit
(19,000 mg/kg). Field activities will include up to 3 days of investigation with a direct-push drill rig for
soil sample collection and subsequent analysis (to a maximum depth of 20 feet bgs). The number of
soil samples to be collected for analysis will be determined based on screening in the field, but is
assumed that the number will not exceed 30 samples. LAI assumes that soil samples will, in general,
be analyzed for gasoline-range and diesel-range TPH to further evaluate the TPH residual saturation

In advance of available information on the condition and relevance of existing groundwater wells, it is
assumed that up to six new groundwater monitoring wells will be installed. These six monitoring
wells, to be used forTPH and MNA evaluation, will include wells upgradient of and within theTPH
groundwater plume. MNA parameters will include ferrous (dissolved) iron, dissolved manganese,
nitrate, sulfate, methane, total organic carbon, alkalinity and other conventionals, dissolved oxygen,
and oxidation reduction potential, to provide baseline MNA data for the hot spot area of the Site.
Sampling will occur shortly after low tide.

These same six wells will also be used for recording groundwater elevations throughout a semi-diurnal
tidal cycle to determine the extent of tidal influence and associated groundwater flow variation. Up to
five additional groundwater samples will be collected shortly after high tide for sulfate analysis to
determine the approximate extent and magnitude oftidally-influenced sulfate recharge to Site
groundwaterfrom the Whatcom Waterway.

Landfill Gas Evaluation

LFG data will be collected during the PRDI to supplement the existing Rl and relevant Site data. Data
collection needs include surfacing information related to the type, thickness, and condition at the
ground surface; subsurface soil-vapor quality data to understand the extent of LFG impacts and the

January                                          14,2020                                        10
Proposal: Port of Bellingham/Central Waterfront PRDI and EDR Landau Associates

concentrations of compounds of interest; and indoor-air quality data to evaluate the potential for
vapor intrusion. These data will also inform the future landfill capping and stormwater infrastructure
components of the remedial design. To assess compliance with the requirement to prevent offsite
migration of LFG, a perimeter monitoring probe system will also be installed during the PRDI. The
perimeter probes will assist in determining whether the remedial design will require subsurface
pressure relief or interceptor trenches to prevent offsite LFG migration. The interior probes will likely
be decommissioned or abandoned in accordance with Washington State requirements, but the
perimeter probes will remain on Site for long-term compliance monitoring.

For the purpose of estimating the costs for conducting the PRDI, it is assumed that 15 shallow
temporary monitoring probes will be installed within the landfill footprint using a direct-push boring

rig, and 8 probes will be installed for perimeter monitoring using an HSA drill rig. During the
investigation phase, LFG will be monitored using a hand-held LFG analyzer (LandtecGEM 2000 or
equivalent) for typical LFG parameters including methane, oxygen, carbon dioxide, carbon monoxide,
and static pressure. Indoor air monitoring will be conducted using an FID targeting methane as an
indicator compound at building slab penetrations. In addition, up to five subsurface LFG samples (and
one accompanying background ambient air sample for quality control) will be collected into Summa
canisters for analysis ofVOCs by EPA Method TO-15.

The PRDI will evaluate the safety of existing buildings, as related to the potential for vapor intrusion,
based on visual inspections of slab conditions, indoor air monitoring with FID, soil-vapor quality data
from LFG probes installed adjacent to buildings, and other considerations developed based on the
totality of the investigation. As it is not yet clear whether vapor intrusion is impacting existing
buildings, comprehensive building evaluations, such as sub-slab flow and depressurization
evaluations, are not included in this proposed scope of services. The PRDI may indicate that further
evaluation is needed to design retrofit mitigation systems for some buildings. If these services are
required, further recommendations for additional indoor air and sub-slab evaluations will be
presented to the Port in a separate cost proposal for these services.

The subsurface LFG sampling probes within the landfill perimeter will be relatively shallow, assuming
a maximum depth of 5 feet bgs, and will be installed using temporary sampling equipment. For
perimeter monitoring, it is assumed that the probes will be installed to a maximum depth of 15 feet
bgs, and would be constructed with Vz-inch polyvinyl chloride (PVC) and completed with surface-
mounted, traffic-rated monuments for long-term compliance monitoring.

Surface Capping and Stormwater Controls

Existing Surface Conditions

The 15 proposed sampling locations described under the LFG Evaluation program will also be used to
collect data related to existing surface conditions (e.g., surface type [asphalt, concrete, etc.],
thickness, suitability for capping use, etc.). In addition, 18 shallow test pits will be advanced (to a

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Proposal: Port of Bellingham/Central Waterfront PRDI and EDR Landau Associates

maximum depth of 5 feet bgs or until landfill refuse is reached) within the portion of the landfill
proposed for capping that is currently covered with gravel. The purpose of these test pits will be to
collect information related to the thickness of the gravel section. Grab samples of the gravel will be
obtained at each test pit location and laboratory grain analyses will be performed on one sample per
test pit. Information from the grain-size analyses will be used to estimate the potential infiltration
rate of stormwater through the gravel layer using published grain size-based infiltration rate
correlations. This information will be used to assess if a physical barrier (e.g., soil/gravel and/or hard
surface) will be needed to supplement existing graveled areas to address the soil pathway for direct
contact and erosion of soils.

Site Hydraulics and Groundwater Quality Evaluation

Given that the adjacent ASB may be directly influencing groundwater containment dynamics at the
Site and that the long-term future of the ASB is unknown, further evaluation into options for long-
term containment of Site groundwater, in line with the intent of the remedial action, will be

Options for more reliable, long-term groundwater containment strategies for the western portion of
the landfill will be evaluated through installation of four new monitoring wells proximal to the border
between the ASB and the Site. Two of these wells will be installed adjacent to the upland border with
the ASB. The remaining two wells will be installed along the western boundary of the Site, one to the
north toward the I&J Waterway and the other to the south toward Whatcom Waterway.

Wells will be installed using an HSA drill rig and will be developed in advance of any sampling. One
sampling event will be conducted from the four new monitoring wells. Groundwater will be collected
and analyzed for those groundwater parameters with established cleanup levels in the CAP including,
TPH (gasoline-, diesel-, and oil-range), metals (total and dissolved), benzene, PAHs, and
bis(2-ethylhexyl)phthalate. It is assumed that some existing Site wells will be in adequate condition
and in relevant locations to also be used for further Site hydraulic evaluation, if necessary.
Dataloggers will be installed in the new wells to monitor groundwater elevation trends. The Work Plan
will include the approach and rationale for well installation, data collection, and investigation use.

The estimated cost to complete the PRDI is: $ 216,400.

Task 004: Engineering Design Report

This section summarizes the approach and associated level of effort for preparation of the EDR for the
Site. The EDR will provide a conceptual presentation of the elements of the 30 percent design. The
EDR will help to facilitate Ecology's review and concurrence with proposed engineering concepts and
design criteria that will be used for the next phases of design for the remedial action. Review and
approval of the EDR by Ecology will confirm the agency's concurrence with the design approach in

January                                        14,                2020                           12
Proposal: Port of Bellingham/Central Waterfront PRDI and EDR Landau Associates

advance of preparing design-and construction-level drawings and specifications for implementation of
the remedial design.

In general, the EDR will be prepared in accordance with Washington Administrative Code (WAC)
173-340-400(4)(a). The EDR will include:

   • A brief overview of general project information presented in the RI/FS report

   • An update of current Site conditions, incorporating data collected during planning for and
       implementation of the PRDI. A brief summary of the results of the PRDI, including tabulated
       data (as appropriate), will be included as an appendix to the EDR.

   • Details of the proposed remedial action implementation including:

               A detailed description of the proposed remedial action elements, including the

                   • Soil hot spot removal of petroleum contamination in the C Street area

                   " Reduced permeability capping in the landfill footprint and C Street areas,
                       including an assessment of the suitability of existing reduced permeability
                       capping materials for use as a landfill cap

                   • Physical barrier capping in the Hilton Avenue areas

                   * Groundwater MNA to address residual contamination in the vicinity of the
                       C Street area

                   • Engineering controls to prevent soil vapors and LFG through indoor air

                   • Institutional controls, including environmental covenants

               A general overview of the engineering concepts and rationale for the elements of the
               remedial action

               Descriptions of soil and groundwater characteristics (as appropriate); design criteria;
               assumptions; and preliminary calculations for the various elements of the cleanup
               action, to include but not be limited to the extent of planned excavation and the
               related discussion on the management and disposal of excavated materials;
               conceptual plans for Site grading, paving, and material management options;
               approaches for physical barrier and reduced permeability cap placement (including
               repair of existing impervious features [as necessary]); and strategies for stormwater
               infrastructure upgrades and potential pre-treatment requirements (if necessary)

               LFG investigation results and conceptual options for the Site-wide strategy to mitigate
               LFG (including emission estimates and exposures based on LFG modeling, air
               dispersion modeling, and Site-specific VOC concentrations)

               Conceptual-level engineering drawings of the following elements:

                   • Existing Site conditions

                   • Existing and proposed stormwater drainage basins and associated options for
                       stormwater controls

January                                       14,2020                                      13
Proposal: Port of Bellingham/Central Waterfront PRDI and EDR Landau Associates

                     • Proposed Site layout, including areas of capping and associated grading

                     • General proposed plans and options for LFG control at the Site

                 A general description of the following:

                     • Construction testing that will be used to demonstrate adequate quality control

                     • Compliance monitoring that will be implemented during and after
                         construction to meet the requirements of WAC 173-340-410

                     • Construction procedures proposed to address safety and health requirements
                         of WAC 173-340-810

                 Information to fulfill the applicable requirements of the State Environmental Policy
                Act (Chapter 43.2C of the Revised Code of Washington), as appropriate

                A general list of permits, property access, and tenant coordination issues that need to
                 be resolved to implement the remedial action

                An anticipated schedule for final design and construction.


A draft version of the EDR will be prepared for internal Port review and comment. As with the Work
Plan preparation process, more than one internal draft version of the document for the Port's
consideration is anticipated. The draft EDR will include up to 10 sheets presenting the conceptual
design details forthe remedial action program.

Upon resolution of the Port's comments on the draft, LAI will submit the formal draft EDRto Ecology
for review and consideration. LAI will work with the Port to resolve Ecology's comments on the draft
EDR and prepare a final EDR for internal Port review. After resolution of any remaining comments, LAI
will finalize the EDR and deliver to Ecology for final approvals.

LAI assumes that the EDR will be provided to the Port and Ecology in electronic (PDF) format only.

The estimated cost to complete the EDR is $ 149,600.

Based on the proposed requirements in the draft CAP, the scope of services outlined in this proposal,
and receipt of written authorization to proceed by early February 2020, a general schedule for the
required services is presented in the table below.

January                                          14,2020                                    14
Proposal: Port of Bellingham/Central Waterfront PRDIand EDR                                                  Landau Associates

Project Schedule
                Task/Subtask Element                  Completion Date                              Notes
  Post Award - Notice to Proceed                          Feb.2020
  Data Management/Preliminary Site Reconnaissance
  Data Exchange                                        Feb./Mar. 2020     Historical data exchange, management, and review
                                                                          Monitoring well network, existing surface
  Existing Conditions Assessment                      Feb./March 2020
                                                                          conditions, access evaluations, etc.
 Site Survey (topography and utilities; Wilson)        Mar./Apr. 2020     Wilson with APS for utility locates
 Other Site Surveys (as needed)                        Mar./Apr. 2020     Stormwater conveyance camera investigation, etc.
 Pre-Remedial Design Investigation Work Plan
 Work Plan-Draft                                          June 2020       Assume more than one internal Port draft
 Work Plan-Final                                          July 2020
 PRDI Implementation/Field Programs
 Utility Locates                                          July 2020       Additional for subsequent mobilizations, as needed
 Hot Spot Soil Investigation (Geoprobe)
                                                                          Existing surface condition assessment is included in
 Install LFG Probes/Ports (Geoprobe)
                                                                          this subtask

 Test Pit Excavations (18 locations)                                      Depth to 5 feet or until landfill refuse is reached
                                                       July/Sept. 2020
 Well Installation (10 new) (HSA)
                                                                          Define hot spot area excavation and MNA
                                                                          evaluation; Site hydraulics and containment
 Well Development (10 new)

 Groundwater Sampling                                                     C Street Hot Spot area; ASB proximity
 Groundwater MNA Investigation                         Sept./Oct. 2020    C Street Hot Spot area
 Groundwater Elevation Assessment                       July-Oct 2020     Two rounds of elevation analysis
 LFG Monitoring (Indoor Air; probe follow-up)          Sept./Oct. 2020
 Engineering Design Report
 Data Validation and EIM Submittal
 PRDI Data Reporting                                   Jan./Feb. 2021     EDR Appendix
 EDR - Draft                                              May 2021
 EDR-Final                                                Aug.2021

Budget Estimate
LAI's estimation of the cost for the services described above is $ 499,700 in accordance with the
budget summary table presented below.

  Budget Summary Table

                                                                            Landau       Subcontractors            Proposed
         Task                                                            Associates         and Vendors              Budget

  Task 001: Project Management and Coordination                            $10,700                    $0            $10,700

  Task 002: PRDI Work Plan (including historical data review, site
                                                                           $71,000              $52,000a           $123,000
         survey, and preliminary reconnaissance)

  Task 003: PRDI Implementation                                           $129,000               $87,400           $216,400

  Task 004: Engineering Design Report (including PRDI reporting)          $139,000              $10,600b           $149,600

  TOTALS                                                                  $349,600              $150,000           $499,700

 a Includes Wilson Engineering survey program
 b Includes Moffat & Nichol third-party review support

January 14,2020                                                                                                                 15
Proposal: Port of Bellingham/Central Waterfront PRDI and EDR Landau Associates

 LAI will provide the above-described services on a time-and-expenses basis, in accordance with the
 attached Compensation Schedule, which is hereby made a part of this agreement. The budget
 estimate is based on an assumed level of effort for each of the tasks discussed in this proposal. It is
 possible that the level of effort actually required to complete a specific scope item will differ from
that currently being assumed, and it may be appropriate to reallocate authorized budget amounts
 between the phases/tasks or request additional budget as required to meet the needs of the project.
 LAI will invoice only for the time and expenses actually required to complete the requested scope of
services. The estimated budget will not be exceeded and funds will not be reallocated between tasks

without Port approval.

Project Authorization
We understand that you will authorize LAI's services through a Port-originated Professional Services
Agreement (PSA). This proposal will be attached to the PSA as Exhibit A, and supporting rate
documentation will be attached as Exhibit B.

                                                                                             * * * * *

If you have any questions or concerns about this proposal, please contact the undersigned.


Jeremy Davfs, PE, PMP
Senior Associate Engineer


Jeffrey Tellows, PE, MBA
Principal Engineer, Director of Permitting and Compliance

\\edmdataOZ\Propos3ls\P^Bellingham\2019-ll Central Waterfront PRDI and EDR\Revised Submlttal - 01-14-20\LAt PofB Central Waterfront PRDI and EDR_prop REVS - 01-14-2020.dai

Attachment: 2020 Compensation Schedule

January                                                                                     14,2020                                                                           16

 Personnel                                      Labor                 Hourly
                                                                                                 IA  Rate

 Senior                                    Principal                                               280
 Principal                                                                              260
 Senior                                   Associate                                                240

 Associate                                                                              210

 Senior                                                                         190
 Senior                                         Project                                         175
 Project                                                                         160
 GIS                              Analyst                                                     160
 Senior                      Staff              /   CAD                Designer                           144
 Staff/Senior                                       Technician                                11         132
 Data                              Specialist                                                    132
 CAD/GIS                                        Technician                                            129
 Project                                Coordinator                                                  116

 Assistant/Senior Technician I 107
 Technician                                                                                        86
 Support                                                       Staff                                  75

Expert professional testimony in court, deposition, declaration, arbitration, or public testimony is charged at
1.5 times the hourly rate.

Rates apply to all labor, including overtime.


Field, laboratory, and office equipment used in the direct performance of authorized work is charged at unit rates.
A rate schedule will be provided on request.

Subcontractor Services and Other Expenses

Subcontractor billing and other project expenses incurred in the direct performance of authorized routine services
will normally be charged at a rate of cost plus a four percent (4%) handling charge. A higher handling charge for
technical subconsultants and for high-risk field operations may be negotiated on an individual project basis;
similarly, a lower handling charge may be negotiated on projects requiring disproportionally high subconsultant


Invoices for Landau Associates' services will be issued monthly. Interest of 1% percent per month (but not
exceeding the maximum rate allowable by law) will be payable on any amounts not paid within 30 days.


Unless otherwise agreed, Landau Associates reserves the right to make reasonable adjustments to our compensation
rates overtime (e.g., long-term continuing projects).

                                                                                                     Landau Associates
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