HomeMy WebLinkAbout2014 RFP Corrective Action Plan Services-Tetra Tech, Proposal TETRA TECH
e 1 + 4�'At 4•:3
/j N
;v
February 21, 2014 V `
Mr. Rick Hixson
Office of the City Engineer
P.O. Box 1230
Bozeman, MT 59771-1230
Subject: Bozeman City Landfill Corrective Action Plan
Dear Mr. Hixson:
Tetra Tech is pleased to submit the attached Proposal to prepare and implement a Corrective Action Plan (CAP)
for the Bozeman City Landfill. To support this project, we have assembled a highly qualified team that provides
national remediation expertise, practical design experience, and a local presence that will ensure the
development of a cost effective solution to the off-site migration of volatile organic compounds from the landfill.
Our proposal also describes the steps that we would take through the Corrective Measures Assessment process
to develop the CAP. In addition to developing the final measures in the CAP to address landfill gas migration, we
propose, as an optional measure, to develop interim measures such as a soil vapor extraction system along the
southern landfill property boundary. These interim measures could be installed during 2014 addressing, to the
extent possible, community concerns for timely resolution of this issue.
Thank you for the opportunity to present this proposal. We look forward to hearing from you soon.
Sincerely,
YQQ 0 n�.
t
Larry Cawlfield, P.E., P.H.
Senior Engineer/Hydrologist
Attachment
Tetra Tech
851 Bridger Drive, Suite-46, Bozeman, Montana 59715
Tel 406.582.8780 Fax 406.582.8790 tetratech.com
Bozeman City Landfill
Corrective Action Plan
Proposal to Provide Engineering and Comprehensive Professional Services
February 21, 2014
PRESENTED TO PRESENTED BY
City of Bozeman Tetra Tech P (406) 582-8780
City Engineer 851 Bridger Drive F (406) 582-8790
P.O. Box 1230 Suite 6 tetratech.com
Bozeman, Montana 59771-1230 Bozeman, Montana 59715
Prepared by: N
Nl� Q�4 .
Larry Cawlfield, PE, PH 2/21/14
Project Manager
Reviewed by:
Kirk Miller 2/21/14
Program Manager
Bozeman City Landfill Corrective Action Plan Engineering and Professional Services
TABLE OF CONTENTS
1.0 INTRODUCTION AND COMPANY PROFILE.................................................................................................... 1
2.0 QUALIFICATIONS AND EXPERIENCE............................................................................................................. 1
Solid Waste Management and Remediation................................................................................................ 1
Tetra Tech in Montana and Bozeman.......................................................................................................... 1
ProjectTeam................................................................................................................................................. 1
RelevantProject Experience........................................................................................................................2
3.0 PROJECT APPROACH......................................................................................................................................5
ATTACHMENTS
LIST OF FIGURES
Figure 1. Organizational Chart
Figure 2. Key Personnel Projected Workloads by Month (2014)
Figure 3. Proposed Project Schedule
LIST OF APPENDICES
APPENDIX A: KEY PERSONNEL RESUMES
APPENDIX B: NON-DISCRIMINATION AFFIRMATION FORM
APPENDIX C: COMPANY BROCHURE
OTETRA TECH i City of Bozeman
Bozeman City Landfill Corrective Action Plan Engineering and Professional Services
1.0 INTRODUCTION AND COMPANYPROFILE
Tetra Tech is a leading provider of consulting, engineering, and technical services worldwide. We are a diverse
company, including over 14,000 employees with expertise in science, research, engineering, construction, and
information technology. Our strength is in collectively providing integrated services—delivering the best solutions to
meet the needs of government and commercial clients.
In a complex world with competing demands for limited resources, Tetra Tech offers clear Tetra Tech
tNRI
solutions made possible with sound science, project understanding, innovation, and Rankings
approaches to problems that lead the industry. 1 Water
Tetra Tech recently ranked #1 in Engineering News-Record magazine's annual listing of the 1 Environmental Management
1 Solid waste
Top 10 Solid Waste firms in the United States. i Wind Power
2 Environmental Science
2.0 QUALIFICATIONS AND EXPERIENCE 3 Sanitary/Storm Sewers
4 Hazardous Waste
Solid Waste Management and Remediation S Deslgn Firms
Tetra Tech works closely with its clients to deliver reliable and sustainable engineering for solid waste management
and remediation. Primary services have focused on groundwater and landfill gas issues, and have included remedial
investigation and design activities; permitting; groundwater modeling; litigation support; construction, and O&M
support.
Tetra Tech has designed landfill gas extraction and treatment systems at more than 100 landfill facilities in the United
States. This includes design of well fields and probes, landfill gas blowers, gas conveyance piping networks,
innovative condensate management systems, and landfill gas treatment facilities. Tetra Tech has also assisted public
agencies and private energy developers in the implementation of landfill gas-to-energy programs at active and
inactive landfills. In recent years, Tetra Tech has gained special expertise in the development of systems to control
landfill gas migration at inactive landfills being redeveloped for commercial, residential, and public recreational uses.
Tetra Tech in Montana and Bozeman
Tetra Tech has been providing environmental and engineering services in Montana for over 40 years. Our 100 staff in
Montana (including 5 in Bozeman) provide clients with ready access to a broad range of technical disciplines from
civil, environmental and geotechnical engineering to hydrogeology, hydrology, biology, GIS, soils and regulatory
specialists. This depth of local/regional resources allows us to cost effectively respond to a variety of project needs. In
addition to our Montana staff,we have the ability to draw upon 14,000 Tetra Tech staff nationwide to address unique
or particularly challenging issues, providing local expertise backed by national muscle.
Project Team
Tetra Tech has assembled a team that provides national remediation expertise, practical design experience and a
local presence that will ensure the City of Bozeman (City) develops a cost effective solution to the off-site migration of
volatile organic compounds (VOCs) from the Bozeman Sanitary Landfill (also known as the Story Mill Landfill) site. By
combining experts from around the county that have reviewed, designed or installed hundreds of remediation systems
and landfill gas systems with Montana based civil engineers, Tetra Tech has created a highly effective team. In
addition, our remediation and landfill gas experts have worked on the Bozeman landfill and will have a short learning
curve to start the project.
The project team will be led by Larry Cawlfield, PE, PH, a Helena based civil engineer with over 25 years of
experience in the design and construction of civil engineering projects in Montana. Other key staff include Mr. Peter
Rich, PE, an environmental engineer from Annapolis, MD, with over 25 years of experience, who has worked on over
500 remediation sites across the country, including a number of vapor intrusion projects. He has been involved with
the Bozeman Landfill site over the last year, assisting in the design of home mitigation systems and analysis of data.
Mr. Keith Johnson, PE (Phoenix, AZ) is a civil engineer with 24 years of experience related to landfill design, including
OTETRA TECH 1 City of Bozeman
Bozeman City Landfill Corrective Action Plan Engineering and Professional Services
extensive landfill gas system design and off-landfill projects directed at managing gas migration issues affecting
buildings. Mr. Johnson was involved with the recent landfill gas system upgrades for the unlined cell. Messrs. Rich
and Johnson will be instrumental in the identification of technologies and development of alternatives for the
alternative evaluation process. Mr. Kirk Miller is a hydrogeologist with over 30 years of experience in the investigation
and remediation of contaminant sites, including completing Corrective Measures Assessments (CMA) for landfills in
Montana and Idaho. He has managed the vapor intrusion investigation for this project and is very familiar with site
conditions. He will lead the effort to update the site conceptual model. Mr. Mark Pearson is a project hydrogeologist
who has over 25 years of experience, including over 13 years conducting groundwater, methane and soil gas
monitoring of the Bozeman Landfill. He has also managed the landfill gas extraction system in the unlined cell and led
the effort to modify its design to improve methane capture. He is intimately familiar with the site and the available data
from the various monitoring networks, as well as having an excellent working relationship with the homeowners in the
Bridger Creek Estates neighborhoods. Dr. Maureen McGraw, PhD, PE, an environmental engineer in our Missoula
office with 18 years of experience, will lead the alternatives evaluation and civil design activities. She has recently
designed and implemented a soil vapor extraction (SVE) and air sparging remediation system for a large petroleum
spill in Idaho that contains many of the design principles which will be important for this project. Dr. McGraw is also a
skilled numerical modeler with extensive experience in the development and manipulation of groundwater models, if it
becomes necessary to meet project objectives.
These key individuals will be supported by engineering design staff from our Helena office, CAD staff from the
Bozeman and Helena offices, and field staff from our Bozeman, Missoula, Helena and Billings offices. Tetra Tech has
brought in a primarily new technical team that will be assisted by our staff who are familiar with site conditions,
databases, the neighborhood, the existing landfill gas system and other aspects of the project. This allows us to
commit the resources necessary to move the corrective action plan forward quickly, without impacting other aspects
of the project (e.g., ongoing indoor air and groundwater monitoring, mitigation system inspections, etc.). The site
investigation team will also be able to readily step in and set up or conduct any additional data collection efforts that
are necessary to support the Corrective Measures Assessment (CMA) process.
Figure 1 presents the organizational chart of our proposed team introduced above, and resumes of select key
personnel are provided in Appendix A. Our anticipated key staff availability for the remainder of 2014 is shown on
Figure 2. We have compiled existing project commitments and the estimated demands of this project for each staff.
Any time associated with the ongoing Bozeman Landfill vapor intrusion tasks is included under existing commitments.
The project team was selected only after establishing their availability to support this project. The City of Bozeman is a
long standing client for Tetra Tech and we are committed to making the proposed team available to meet the
schedule outlined in this proposal. The rapid ramp up and reactionary nature of the vapor intrusion investigation
strained available resources last year until we were able to get adequate staff trained to conduct the work. Having the
opportunity to "plan the work, then work the plan" rather than planning on the fly will allow us to meet all schedule and
budget commitments.
Relevant Project Experience
City of Bozeman Sanitary Landfill—Tetra Tech has provided technical assistance to the City of Bozeman at the
Bozeman Sanitary Landfill since the early 1990s. The Bozeman Sanitary Landfill operated between 1970 and 2008.
The facility was a Class II and III landfill that is now in post-closure status with two closed waste cells comprising
approximately 41 acres. Tetra Tech's services have included design and installation of liner systems,
preparation/compilation of a CMA, oversight of design and installation of a landfill gas extraction system (LGES), soil
gas monitoring, groundwater monitoring, and regulatory and third party liaison. In late 2012,Tetra Tech identified
potential issues associated with off-site migration of landfill gas into an adjacent neighborhood. Tetra Tech installed
12 soil gas probes along the landfill boundary and throughout an adjacent neighborhood.The presence of VOCs in
off-site soil gas at concentrations above EPAs Regional Screening Levels led to an extensive investigation of VOCs
beneath and inside 30 homes. Based on the presence of elevated concentrations of VOCs inside the homes, Tetra
Tech has installed subslab depressurization systems in 26 of the homes to intercept the pathway for landfill gas to
enter the homes. Post mitigation monitoring of homes is underway to evaluate the effectiveness of the subslab
depressurization systems on indoor air quality. Additional groundwater investigations are also planned to better
NTETRA TECH 2 City of Bozeman
Bozeman City Landfill Corrective Action Plan Engineering and Professional Services
understand the migration of VOCs from the landfill.This project has been conducted on an expedited schedule with
two events of soil gas probe installation and sampling, indoor air sampling, subslab sampling,three public meetings,
mitigation design and mitigation installation in 26 homes all occurring in less than 10 months.
Richland County Municipal Solid Waste Landfill—Tetra Tech has supported Richland County for over 20 years
with landfill related services at their two solid waste facilities near Sidney, Montana. This has included groundwater
investigations at both of their facilities.Tetra Tech prepared a CMA in 1996, in response to VOC impacts to
groundwater off of the property of the oldest landfill. A passive landfill gas extraction system was constructed and
continues to operate.
At the oldest landfill, ongoing groundwater monitoring and methane gas monitoring was conducted until 2010 when
DEQ requested Richland County conduct an additional evaluation of the distribution of contaminants in the area and
prepare a Revised CMA. As part of this investigation, Tetra Tech installed ten additional monitoring wells and
evaluated new remedial technologies that were not included in the 1996 CMA. Migration of VOCs from the waste to
groundwater via landfill gas was identified as the pathway for groundwater impacts due to relatively low VOC levels
and their widespread distribution. The Revised CMA evaluated a number of remedial alternatives and recommended
implementation of two pilot test programs prior to selection of two final remedial alternatives. The pilot testing includes
the injection of hydrogen release compounds into groundwater to promote biodegradation of tetrachloroethene and
other chlorinated VOCs and the installation of a landfill gas extraction system to control the contaminant source.
Tetra Tech continues to evaluate groundwater chemistry and performance of the injection of hydrogen release
compounds. The active landfill gas extraction system pilot test is scheduled to be installed in summer of 2014. This
system will consist of up to eight landfill gas extraction wells, an extraction system, and carbon canister treatment of
the extracted landfill gas.
Bitterroot Valley Sanitary Landfill CECRA Site—Tetra Tech prepared and implemented work plans to determine
the extent and magnitude of a release of organic compounds (primarily chloroform) at an abandoned landfill in Ravalli
County. Findings from remedial investigations were used to support groundwater flow and solute transport modeling,
risk assessment, and remedial alternatives feasibility studies. Tetra Tech developed remedial designs for four major
remedial actions: (1) vadose zone soil treatment, (2) three-phase groundwater recovery system, (3)water treatment
program and (4) replacement water supplies. Tetra Tech continues to perform groundwater monitoring to evaluate the
long-term effectiveness of the selected remedies.
Tetra Tech designed and supervised removal and treatment of approximately 75,000 cubic yards of contaminated soil
and groundwater from 1994 to 1997. The treatment system remediated approximately 9.2 million gallons of
groundwater.
Tetra Tech designed and installed a groundwater remediation system to intercept and treat migrating, contaminated
groundwater in 1997. Major components included ten groundwater recovery wells, two downgradient demonstration
monitoring wells, a water treatment system (air stripping), treatment system monitoring components, and an outfall
structure located on Bear Creek.Tetra Tech remotely monitored the system operation via a SCADA system and
performed regular compliance monitoring and reporting. By September 2012,the system had treated over 200 million
gallons of groundwater at an average rate of 105 gallons per minute. VOCs were never detected in system effluent.
In 2004,Tetra Tech also designed and permitted a community water supply system (CWSS) to provided water to over
375 properties covering 197 acres where groundwater contamination affected privately-owned water supply systems
As part of the CWSS portion of the project, Tetra Tech completed a comprehensive hydrogeologic assessment and
developed a five-layer model of groundwater flow and contaminant transport in the area to select potential well
locations based on yield, proximity to water users, and contaminant sources.
Flathead Landfill—To support an overall expansion program at this active municipal solid waste landfill,Tetra Tech
designed major modifications to the site's landfill gas collection and control system. Modification of the system
included installation of new landfill gas and leachate extraction wells. An enclosed Perennial Energy flare, a skid-
mounted blower, and a condensate destruction system were also installed. Tetra Tech also provided permitting
support throughout the project, including negotiations with the Montana DEQ.
OTETRA TECH 3 City of Bozeman
Bozeman City Landfill Corrective Action Plan Engineering and Professional Services
Additional Area Landfills—Tetra Tech personnel have provided engineering design, monitoring and remediation
services on numerous other landfills in the region including:
• Republic Services Landfill, Missoula, Montana . Lake County Landfill, Polson, Montana
• Billings Regional Landfill, Billings, Montana • Coral Creek Landfill, Baker, Montana
• Big Timber Landfill, Big Timber, Montana • Northwest South Dakota Regional Landfill
• Lewis and Clark County Landfills, Helena, • Belle Fouche Municipal Solid Waste Landfill
Montana • Bannock County Landfill, Pocatello, Idaho
• Laurel Landfill, Laurel, Montana . Bonneville County Landfill, Idaho Falls, Idaho
Tetra Tech's national landfill consulting team has extensive experience on similar projects throughout the U.S., while
Tetra Tech's local team members have additional relevant remediation, civil design, bidding, and construction
management experience. A small selection of these projects is provided below. Additional projects and references
can also be provided upon request.
Skunk Creek and 191h Avenue Landfills, Phoenix, Arizona—Tetra Tech has performed four significant landfill gas
design projects for the City of Phoenix in recent years. This included design of the Phase I, ll, and III Landfill Gas
Control System (LFGCS) at the Skunk Creek Landfill; and design of the Phase II LFGCS at the 191h Avenue Landfill.
Tetra Tech also provided overall master planning for the development of Skunk Creek LFGES. Work included
preparation of required permits from the Arizona Department of Environmental Quality, and coordinated with local
agencies responsible for enforcement of New Source Performance Standards under the Clean Air Act.
Vincent Mullins Landfill, Tucson,Arizona—Tetra Tech prepared plans and specifications for a landfill gas
extraction system and flare station to control perimeter gas migration, and prevent vapor phase transport of
contaminates to area groundwater. The system was designed to preserve the option of future energy production at
the site. The improvements were designed so the landfill gas control system could be installed in two construction
phases. This looped system withdraws gas from the interior of the site at a rate approximating the estimated rate of
gas generation.
Livingston County Landfill, Livingston County, Michigan—Tetra Tech has performed semi-annual groundwater,
and quarterly landfill gas control monitoring and reporting for the county since 2000. Tetra Tech prepared an
Assessment Monitoring Program and Response Action Plan in accordance with Rule 441 &442 of Part 115 in
response to ongoing groundwater issues, which was approved by the MDEQ without revision. Tetra Tech delineated
the extent of fugitive gas in the surrounding properties; then, designed and constructed two small landfill gas
mitigation systems that have successfully eliminated fugitive landfill gas in all the surrounding residential properties.
Tetra Tech has also assisted the county with the community outreach program regarding landfill issues.
CMC East Main Depot Remediation—This large, high-visibility CECRA project involved completing site
investigations, preparing a Voluntary Cleanup Plan (VCP), developing a remedial design, preparing construction bid
documents and providing construction oversight for the City of Bozeman. The project entailed remediation of soil
impacted by asbestos from a former asbestos mill on South Wallace Avenue in Bozeman, Montana. Asbestos ore and
asbestos fibers were present in surface soils in a commercial area and along residential streets. Asbestos had been
used as fill across a four block area. Tetra Tech conducted investigations for the second phase of this project
including sampling of soils around buildings, parking lots, city streets, sidewalks and alleys. This data was used to
establish distribution of the asbestos and identify areas needing remediation. Tetra Tech developed a VCP Addendum
that identified the extent of contamination and presented a wide range of potential alternatives for remediation of the
impacted soils. The VCP included extensive Institutional Control Measures, including asbestos warnings on the City's
GIS system, special provisions for all street cut permits and building permits, asbestos training of City employees,
public education and deed restrictions. Tetra Tech provided oversight of contractor operations during the removal of
asbestos contaminated soil including documenting volumes of material removed, collecting soil samples to document
contaminant removal, collecting air samples to document workers and area residents were not being exposed to
asbestos, and documenting volumes of material replaced. A Construction Completion Report was prepared that
documented the remediation activities, identified clean areas and areas still potentially containing asbestos as well as
identifying all Institutional Control Measures implemented for the site.
NTETRA TECH 4 City of Bozeman
Bozeman City Landfill Corrective Action Plan Engineering and Professional Services
Boise Products Terminal Emergency Response and Site Remediation—Tetra Tech provided engineering and
environmental services on an expedited basis to minimize the impact of a release of 70,000 gallons of gasoline. This
included removal of liquid hydrocarbons from the ground, soil excavation, design, installation and operation of a soil
vapor extraction system, air sparging, dual phase product recovery systems, and hydraulic control of the plume.
After the emergency response,Tetra Tech conducted an extensive site investigation that included soil, groundwater,
and soil vapor samples on and off site to characterize the extent of the release, impact to groundwater, and potential
for vapor migration into buildings.The migration pathways and extent of contamination were defined as part of the
Remedial Investigation and Risk Evaluation that was submitted to Idaho Department of Environmental Quality(IDEA).
A final Corrective Action Plan (CAP) was then developed, and has been approved by the IDEA. The proposed
modifications and enhancements to the remediation systems defined in the CAP are currently being implemented.
Clark Fork River Restoration—The Clark Fork River Operable Unit is part of the Milltown Reservoir/Clark Fork River
Superfund site.Tetra Tech has conducted baseline site investigations, remedial design and construction oversight for
Montana DEQ. Remedial design has included soil removal actions, borrow areas, river bank treatments, erosion
control measures, diversion methods, detailed plans and specifications and contract documents for several miles of
river restoration. Tetra Tech personnel also oversee construction of these projects which includes continuous on-site
construction oversight, evaluation of submittals, measurement of quantities, daily construction logs, and preparation of
pay requests. Tetra Tech's involvement in this massive project spans the entire project timeline from initial
investigations through construction completion.
PROJECT3.0 APPROACH
Tetra Tech's proposed approach to developing and implementing a Corrective Action Plan for the former Story Mill
landfill will follow DEQ's Corrective Measures Assessment (CMA) process while developing a cost effective proven
remedial action that meets the City's objective of containing VOCs on the Story Mill landfill property. Any changes
within the landfill permit boundary are required to be approved by DEQ, hence,the CMA process (Administrative
Rules of Montana (ARM) 17.50.1307 through 17.50.1310) will be followed. However, Tetra Tech recommends the City
use an interim measure or pilot test as an optional approach to expedite installation of a partial remediation system
that would provide containment of VOCs on the landfill property during 2014. The full CMA process may not allow
construction to happen until 2015.
Corrective Measures Assessment—The initial step of the CMA process is to characterize the problem.The City has
conducted extensive groundwater and methane monitoring at the site since the 1990s and soil gas and indoor air
monitoring of non-methane VOCs in the vicinity of the landfill and adjacent homes since early 2013. DEQ has
requested that this information be supplemented with the installation of additional groundwater monitoring wells near
the landfill. The City submitted a groundwater investigation work plan to DEQ on December 20, 2013 and a revised
work plan was approved by DEQ in February 2014. Tetra Tech is currently implementing that work plan and the
results will be combined with existing groundwater and soil gas data to create a conceptual model of VOC transport
and migration away from the landfill.
Site Conceptual Model—The existing conceptual site model developed by Tetra Tech, presents a simplified version
of our understanding of how VOCs are migrating from the landfill to homes in the Bridger Creek Subdivision. The
traditional vapor intrusion model entails contaminated groundwater migrating away from a source with VOCs
volatilizing from groundwater and moving up through the vadose zone into buildings at the surface. The presence of
38 VOC compounds in soil gas at the landfill boundary, yet only 5 VOCs above method detection limits in offsite
groundwater, indicates that groundwater plays a limited role and migration via the gas phase directly from the landfill
is the primary VOC transport mechanism.
Data generated by the groundwater investigation will be used to modify this conceptual model.This will ultimately
drive the focus of the CMA process and whether it targets the capture and removal of VOCs in soil gas or also targets
VOCs in groundwater. The geographic extent of the model also needs to be re-evaluated.The existing conceptual
model is based on the assumption that the primary flow path is to the southwest from the unlined cell through the
Bridger Creek III subdivision. The potential for soil gas migration to the south or east of the landfill also needs to be
OTETRA TECH 5 City of Bozeman
Bozeman City Landfill Corrective Action Plan Engineering and Professional Services
considered for the Conceptual Model to fully describe the migration of VOCs, which will then allow the City to fully
evaluate the problem.
A conceptual model report will be compiled that presents data in a variety of forms to help form the revised conceptual
model. This will likely include developing new groundwater, soil gas probe and sub-slab iso-concentration maps of
selected VOCs, geologic sections or fence diagrams using geologic well logs, and groundwater potentiometric surface
maps.We do not see value in a numerical groundwater or soil gas flux model at this stage of the project. However, if
groundwater is identified as a significant transport mechanism for VOCs from the landfill then numerical modeling may
be warranted to properly evaluate groundwater treatment alternatives in the CMA process. The various
representations of data will be used to create a simplified model of subsurface conditions that will describe the
relationship between VOCs in groundwater and soil gas and the primary mechanisms by which VOCs migrate from
the landfill to the soil gas beneath homes in the Bridger Creek neighborhood. This will likely entail a generalized
stratigraphy of the area and an approximation of the mass of VOCs moved through groundwater versus soil gas
mechanisms.The extent of both groundwater and soil gas migration of VOCs will also be identified, with particular
focus on the Bridger Creek Phase II neighborhood and adjacent lands to the south and east.
Corrective Measure Assessment Process—The corrective measures assessment process can be summarized into
the following primary components:
• Definition of the Problem
• Identification of Remedial Technologies
• Development and Analysis of Alternatives
• Selection of Remedy
DEQ rules (ARM 17.50.1307 through 1310) identify specific information that must be compiled and considered for
each component of a CMA report and a formal process to be followed in the development and selection of a final
remedy. An outline of a typical CMA report is included in Attachment 2 of this proposal. Details to be included in each
component of the CMA process are discussed below.
Additional Data Collection—The existing body of data should be adequate to properly define the problem, however,
as the CMA process proceeds, additional data may be necessary to support proper analysis of a technology. We
anticipate this will include a pilot test to evaluate the radius of influence from vapor extraction wells using existing
methane and vapor monitoring points along the property boundary. Blowers will be set on methane monitoring wells
BLG-4 and BLG-10 while vacuum is measured in nearby soil gas and methane monitoring wells. An air sample will be
collected during the pilot test for methane and VOC analysis. This data will support the identification and analysis of
likely air treatment methods for any SVE system. More extensive pilot testing may be necessary for the final design
process to establish exact spacing of extraction points or bench scale testing may be warranted to evaluate the
efficacy of air discharge treatment methods.
Definition of the Problem—This portion of the CMA lays the groundwork for understanding the site and the problem,
which at this point is defined as the migration of VOCs from the landfill into the adjoining Bridger Creek III
neighborhood. A discussion of the contaminant sources, and transport and fate of COCs will also be warranted. The
conceptual model will be a significant part of this section since it will provide the most current understanding of how
VOCs are migrating from the landfill into soil gas beneath the adjacent neighborhood.
This process will utilize existing data from methane, soil probe, indoor air and groundwater monitoring points, as well
as the results from the upcoming groundwater investigation to define the problem, its source(s) and migration
pathways. A discussion of fate and risk to human health and environment will be compiled preferably using the results
of the ongoing Risk Assessment currently being compiled for the City. If not, general risk numbers like the Regional
Screening Level, Minimal Risk Level or Maximum Contaminant Level will be used.
Identification and Screening of Remedial Alternatives—This component of the CMA process will use the
understanding of the problem developed by the process defined above to identify technologies that are known to be
effective at addressing the defined problem. This will primarily rely on the expertise and experience of key staff, who
NTETRA TECH 6 City of Bozeman
Bozeman City Landfill Corrective Action Plan Engineering and Professional Services
have been involved in the design and implementation of hundreds of remedial systems at site across the country. In
addition, DEQ and potentially the public will also identify technologies to be considered for the site.
Development and Description of Remedial Alternatives—Once applicable technologies are selected,they will be
developed into alternatives that address the problem. In some cases, one or more technologies may be combined into
a single alternative (e.g., SVE along property line and enhanced landfill gas extraction from within cell) to best achieve
the project objectives. It is anticipated that perimeter active SVE and enhancements to the existing landfill gas
extraction system will be given consideration, however, passive vent trenches and vertical containment barriers may
also have merit. If groundwater transport of VOCs is identified as a significant off-site transport mechanism, then air
sparging, in situ biodegradation, pump and treat and other groundwater treatment technologies will also be
considered.
Detailed Analysis of Remedial Alternatives—The CMA process stipulates a detailed analysis of remedial
alternatives be conducted using DEQ's established criteria, which include the following:
• Ability to Meet Project Objectives 0 Practical Capability of Owner/Operator
• Effectiveness 9 Degree of Community Concerns
• Time Required to Begin and Complete Remedy • Cost
• Institutional Requirements
Comparative Analysis of Alternatives and Selection of Remedy—Each of the alternatives will be discussed
relative to each other for each of the seven criteria listed above. Whether each alternative achieves or fails to meet
the requirements for each criterion will be discussed. This is an interim step toward conducting a numerical ranking of
each alternative relative to each criterion in the subsequent Alternative Selection process.
Each alternative will be scored relative to each criteria and a total score will be compiled. Scores will be selected
based upon qualitative analysis for some criteria (e.g., practical capability and degree of community concerns) and
quantitative analysis for others (e.g., time required and cost).The basis for each scoring will be provided.
The final selection may entail choosing one alternative or a combination of alternatives, if it is determined to be the
necessary to meet the project objectives. The selected remedy will be identified in the draft CMA report, which will be
submitted to DEQ for review. DEQ will subsequently schedule a public meeting, at which time the CMA process will
be discussed and the selected alternative identified. DEQ will receive public comments on the Draft CMA and provide
comments to the City for preparation of a final CMA and their preference for the preferred remedy.
Alternatives Likely to be Considered by the CMA—It is anticipated that the alternatives DEQ will require to be
considered will include, but not be limited to, the following:
• No Action (i.e., Maintenance of existing home mitigation systems and overall site monitoring program)
• Removal of all refuse in unlined cell
• Soil vapor extraction along landfill property boundary
• Groundwater treatment (depending on results of modified Conceptual Model)
• Enhancement to existing landfill gas extraction system
Based on comments and questions during previous public meetings, we anticipate that there will be public requests to
include outright removal of all refuse from at least the unlined cell and possibly from both cells. This alternative most
likely will be the most expensive alternative analyzed; however, we expect there will be a call by stakeholders for its
inclusion.
Corrective Action Plan Design and Construction Oversight Process—Once the CMA process is completed and
approved, we anticipate that the project will move into the implementation phase. In general, this phase will consist of
detailed design of the selected action plan, selection of a construction contractor, construction and engineering
oversight of the construction contractor. We have performed traditional design and construction contracts and we
have also performed design-build projects when time does not allow for traditional scheduling.
Tetra Tech anticipates that the detailed design will proceed with at least two steps. Tetra Tech will begin the detailed
design by creating a preliminary design for review by the City and DEQ. The design at this preliminary level (50 -60%)
OTETRA TECH 7 City of Bozeman
Bozeman City Landfill Corrective Action Plan Engineering and Professional Services
typically consists of engineering designs shown on plan sheets that show the arrangement, connectivity, size, type
and other attributes of all of the major components of the selected action plan. Typically, there are few details
provided at this design level. Tetra Tech anticipates using our Masterworks®specification software to generate
outline type specifications at this level. Specifications will be provided in Construction Specifications Institute (CSI)
format.
Following the City's review of the preliminary design, Tetra Tech will proceed to final design, incorporating the City's
comments. During the final design, we will develop details, refine (if necessary)the major components, further
develop and complete the specifications, develop an engineer's estimate for the project, develop contract documents
and bidding documents, and estimate the duration of construction. On completion of this near final design package,
Tetra Tech will submit this package to the City of Bozeman for its final review. This near final design package is
sometimes referred to as a 95%design.We anticipate that the City's review would result in minor and editorial
changes to the 95%design package and within a short time frame, Tetra Tech would produce a design package
ready for bidding and construction.
On completion of this final design package,the project will be advertised for bidding to meet the requirements of MCA
75-5-4302 and any other applicable ordinances.Tetra Tech can manage the bidding stage of the process for the City,
if requested.Tetra Tech will also review bids received for unbalancing or other improprieties that might result in a
liability for the City. Following selection of the bidder, we anticipate that the City will execute a contract with the
selected Contractor for completion of the project.
During construction, Tetra Tech anticipates providing construction oversight to ensure that the construction is
completed according to the plans and specifications. To do this, we would provide an experienced Construction
Engineer who would be on site during construction and would coordinate with the contractor, the City, the public and
design engineer; maintain a daily construction diary; measure quantities; document construction progress through
photos and note any approved changes to the construction plans for production of an as-built set of plans and
specifications.
A proposed schedule to complete the CMA process outlined above is presented in Figure 3. The schedule includes
the timeline for both the full CMA process and the proposed Interim Measures/Pilot Study approach. Assumptions are
made relative to the time necessary for the City and DEQ to review draft documents and design reports.
Optional CMA Process—The full CMA process will likely not be completed until at least late 2014 (Figure 3), at
which point design of the selected system can be initiated. It is likely that actual construction will not occur until
summer 2015. Given the nature of neighborhood concerns over the need to address the source of landfill gases, this
may cause community relation issues. Hence, an additional process is proposed that could allow installation of at
least the core of a remediation system during summer 2014 (Figure 3).
This process entails making an assessment of the problem after the conceptual model is revised and designing and
implementing an interim measure/pilot study. This would likely entail an SVE system along the south boundary of the
landfill. An expedited design/build approach could also be utilized to further expedite system implementation. Either
way, installation of a system that should significantly reduce the migration of VOCs in soil gas into the Bridger Creek
Phase III neighborhood is possible during 2014.
DEQ approval is required for any additions or alterations within the landfill permit boundary, hence, an interim
measure/pilot study approach would need to be presented to DEQ as a means of providing site specific data on the
effectiveness and spacing of SVE technology. This approach would still require the full CMA process to be followed
on a parallel track, which would result in a final CMA to be completed. The final design might entail increasing the
number or coverage of SVE wells installed as part of an interim measure/pilot study, or it might add additional
technology to the system. This approach has been recently used by Tetra Tech at the Richland County, Montana
landfill in a very similar situation.Tetra Tech prepared a revised CMA and is currently designing a near full scale pilot
test LFG system in the waste cell as a pilot test. It is expected to enhance reduction of VOCs at the source in the
short term, and then the CMA will be finalized once results of the pilot test are complete.
OTETRA TECH 8 City of Bozeman
Bozeman City Landfill Corrective Action Plan Engineering and Professional Services
OTETRA TECH City of Bozeman
City of
Bozeman
IdL
O Project Manager
Larry Cawlfield, PE
Conceptual 71
Model
Kirk Miller
AIL
011
Corrective Measures Assessment
Larry Cawlfield, PE
Alternative Landfill Gas Groundwater Soil Vapor Extraction
Development F
and Analysis K. Johnson, PE P. Rich, PE M. McGraw, Pi'D, PE
R. Davenport, EIT M. McGraw, PhD, PE R. Davenport, EIT
P. Rich, PE M. McGraw, PhD, PE K. Miller
K. Johnson, PE M. Pearson
R. Davenport, EIT
Design / Construction
Maureen McGraw, PhD, PE
DesignI F Construction
K. Johnson, PE R. English, EIT
Bozeman, Montana R. Davenport, EIT D. May
Helena, Montana B. Quaintance D. Wiegand
Missoula, Montana
Annapolis, Maryland
Phoenix,Arizona
Figure 1
O TETRATECH Organizational Chart
Bozeman City Landfill
Bozeman, Montana
Bozeman City Landfill Corrective Action Plan Engineering and Professional Services
Figure 2. Key Personnel Projected Workloads by Month (2014)
Key Personnel E E
Projection
Type of E
Bozeman Landfill 20% 25% 40% 30% 50% 40% 50% 50% 40% 30%
Larry Cawlfield, PE, PH Expected Workload
Project Manager
Base Workload 60% 50% 40% 40% 15% 15% 15% 15% 15% 15%
Bozeman Landfill 25% 25% 10% 10% 5% 5% 5% 5% 5% 5%
Kirk Miller Expected Workload
Conceptual Model
Base Workload 50% 50% 50% 40% 40% 30% 20% 20% 20% 20%
Peter Rich, PE Bozeman Landfill 10% 15% 15% 10% 5% 5% 5% 0% 0% 0%
Conceptual Model/ Expected Workload
Alternatives Base Workload 60% 60% 60% 60% 60% 60% 50% 50% 40% 40%
Bozeman Landfill 25% 20% 20% 15% 15% 10% 10% 10% 5% 5%
Mark Pearson Expected Workload
Conceptual Model
Base Workload 60% 50% 50% 40% 40% 40% 40% 30% 25% 25%
Keith Johnson, PE
Bozeman Landfill 5% 5% 10% 15% 15% 10% 5% 5% 0% 0%
Expected Workload
Alternatives/Landfill Gas
Base Workload 60% 60% 60% 60% 50% 50% 50% 30% 30% 30%
Maureen McGraw, PhD, PE
Bozeman Landfill 0% 5% 10% 15% 15% 30% 30% 30% 10% 10%
Expected Workload
Design/Construction
Base Workload 60% 60% 50% 50% 40% 25% 25% 25% 20% 20%
OTETRA TECH City of Bozeman
ID j Task Name ter 1 3rd Quarter 4th Quarter
May �_ Jun-----L--Jul --_Auk - _Sep Oct Nov -_'-
1 Implement Groundwater Work Plan and
Reporting
2 Implement Winter Air Sampling and Reportin€
3 Notice to Proceed From City for CMA Project
4' Conceptual Model Development
5 Submit Conceptual Model to DEQ and Initiate
CMA Process
6 Definition of Problem
7 Identify Remedial Technologies
8 Develop and Analyze Alternatives
9 Prepare Internal Draft CMA Report
10 City Review of Internal Draft CMA Report
11 Draft Corrective Measures Assessment Repo,
12 DEQ Review
13 DEQ Public Meetings
14 Final Corrective Measures Assessment Repor
—i
15 DEQ Approval
16 Preliminary Design/CAP
17 City and DEQ Review
18 J Final Design/CAP
19 Advertise for Bids
20 Bid Letting 7/27
21 Contract Negotiations
22 1 Notice to Proceed 8/11
23 Full Remediation System Construction
24 Full Remediation System Start Up 10/20
25 ; INTERIM MEASURE/PILOT TEST OPTIONAL
CMA PROCESS
26 Negotiate Interim Measure/Pilot Test With DI
27 Interim Measures Design
28 Interim Measures Advertising and Bidding
29 Interim Measures Construction
30 Interim Measures Start up
Task Fiil� Deadline
Project: Bozeman Landfill CAP Split „1 Progress
Date: Fri 2/21/14 Milestone
Summary •
Bozeman City Landfill Corrective Action Plan Engineering and Professional Services
APPENDIX ,
: KEY PERSONNEL RESUMES
OTETRA TECH City of Bozeman
LARRY D. CAWLFIELD, PE, PH
Senior Engineer, Hydrologist
EDUCATION
BS, Civil Engineering, Montana State University, 1982
MS, Civil Engineering, Montana State University, 1987
REGISTRATIONSICERTIFICATIONS
Professional Engineering: Colorado (#26040), Montana(#7402PE),
Professional Hydrologist, American Institute of Hydrology, 1998 (#AIH-1472)
OSHA 40-hour training, 1994
8-hr OSHA HAZWOPER Refresher, January 2012
Plans &Specifications Review and Construction Inspection Technical Seminar, 2003
Process-based Stream Channel Design, 2001
Advanced HEC-RAS and HEC-HMS, 2007
EXPERIENCE SUMMARY
Mr. Cawlfield is a registered professional engineer and professional hydrologist with 30 years of experience in
construction management; development of detailed plans, specifications and contract documents for large
construction projects; hydrologic analyses; hydraulic analyses; design of waste repositories for mine
reclamation projects and environmental remediation projects; design of water-related projects; and inspection
and analysis of water rights. His projects include stream reconstruction and bank stabilization; groundwater
collection and disposal systems; pumps and pipelines; dams and spillways; canals and stormwater
diversions; flood protection structures; floodplain analyses; small municipal water supply and treatment
projects; mine reclamation; storm sewers; wetlands; and general earthwork projects. He has also served as
expert witness in water rights negotiations in administrative and judicial hearings in Montana and Colorado.
Mr. Cawlfield has developed hydrologic river basin models for resolution of water rights disputes and water
rights administration. He is also experienced in the use of civil engineering design software that employs
digital terrain models for the design of roads, repositories, dams, ponds, wetlands and earthwork projects.
SELECT PROJECT EXPERIENCE
• Evaluation of Landfill and Reclamation Closure Covers. Used the Hydrologic Evaluation of Landfill
Performance (HELP) model to evaluate the relative performance of various cover materials including soil;
drainage materials, compacted clay, geosynthetics and GCLs in minimizing deep percolation of rainfall
and snowmelt on landfill covers and reclamation closure covers. Determined hydrologic, and
hydrometeorological data such as precipitation, evapotranspiration, conductivity, and soil moisture
holding capacity for use in the HELP model.
■ Remediation and Reconstruction of Floodplain, Stream Channel, and Wetlands within a Superfund
Site, near Butte, Montana. Served as Hydrologist / Design Engineer / Construction Oversight
Manager. As a Hydrologist, determined instantaneous flows and flow-duration curves for the stream
within various reaches, creates HEC-RAS hydraulic models of the stream system before remediation and
following reconstruction and determines the plan form of the reconstructed stream to meet required
sinuosity ratios, pool locations, grades and bend radii of curvature. As a Design Engineer, developed
designs for streambanks and the streambed, including location and placement of pools, riffles, point bars,
runs; bed features such as rock drops and mid-channel rock clusters; floodplain elevations and extents;
streambank armoring methods using fabric-encapsulated soil lifts, riprap and articulated concrete blocks;
and estimated earthwork quantities for cut and fill using sophisticated earthwork modeling software. As a
Construction Oversight Manager, reviewed and approved pay requests, submittals, and change requests,
produce as-built drawings and final design reports; monitor construction progress, quality and schedule,
and review quality assurance testing results. This project involves complete removal of the streambed
and floodplain and reconstruction of both. To date (2007), approximately eight miles of stream and
floodplain have been excavated and rebuilt with millions of cubic yards of tailings and impacted soils
removed and placed in repositories. (2000 to 2007)
■ Management of Earth Levee Construction, Santa Cruz Project, Tucson, Arizona. Project Manager
responsible for managing construction of 7.36 miles of earth levee with soil cement bank
Tetra Tech Page 1
LARRY D. CAWLFIELD, PE, PH
protection. Tasks included drainage excavation and placement of over one million yards of material,
placement of over 300,000 cubic yards of soil cement, excavation and placement of irrigation siphon pipe,
installation of culverts, grading and placement of asphalt road, clearing and grubbing and related
construction, crushing and screening of aggregate and associated work. Managed and coordinated
subcontractors. (2000)
• Petroleum Products Terminal, Boise, Idaho. Design Engineer responsible for review and development
of detailed plans for groundwater capture and disposal systems and soil vapor extraction system to
remediate the site after an accidental release of 70,000 gallons of gasoline occurred in January 2013.
Provided senior review and guidance for selection of piping materials and detailed analysis of pumps for
groundwater removal. Coordinated with on-site personnel during construction of the system to resolve
construction issues.
• Abandoned Uranium Mine Reclamation, South Dakota. Design Engineer responsible for development
of plans and specifications for remediation of an abandoned uranium mine. Design components included
waste repositories, stormwater runoff channels and stilling basins, groundwater drainage systems, access
roads and related minor construction items. (2013)
■ Design, Permitting, and Oversight of Water Treatment Systems. Project Engineer responsible for
treatability investigation for small water supply systems at various locations near Helena, Montana, and
specifying and permitting installation of those systems. Innovative systems specified include a passive
arsenic removal system (one of only several permitted in the state at the time)for a small subdivision near
Jefferson City and a residuals recycle loop for the City of Helena's Missouri River Water Treatment Plant
(the second such system permitted in the state at the time).
PAPER PRESENTATIONS
Bucher, WH, L Cawlfield, and GR Fischer. Water quality improvements at Silver Bow Creek, resulting from
remedial action. Proc. of the 2006 Billings Land Reclamation Symposium. American Soc. of Mining and
Reclamation, Lexington, KY.
Cawlfield, L and G Fischer. Stream reclamation issues and costs for mine reclamation projects. Proc. of
International Erosion Control Assoc., Environmental Connection; 2006 Feb; Long Beach, CA.
Wolfe, CG, L Cawlfield, and B Bucher. Channel remediation and restoration design for Silver Bow Creek,
Butte, Montana. Proc. of Intern. Erosion Control Association, Environ. Connection; 2005 Feb; Dallas, TX.
Bucher, WH, BR Grant, L Cawlfield and F Ehernberger. Stabilization and isolation of the McLaren Mine waste
rock, New World Mining District, Montana. Proc. of 11 th Tailings and Mine Waste Conference; 2004 Oct 10-
13. A.A. Balkema Publishers.
Bucher, WH, G Fischer, B Grant, A Shewman, L Cawlfield, JE Chavez, and T Reilly. Remediation of
streamside tailings along Silver Bow Creek near Butte, Montana. Proc. of the 9th Intern. Conf. on Tailings and
Mine Waste; 2002. A.A. Balkema, The Netherlands.
Cawlfield, LD. Optimal allocation of water for agriculture and hydropower. Third Water Resources Operations
Management Workshop; 1988 June; Fort Collins, CO.
PROFESSIONAL EMPLOYMENT HISTORY
Senior Engineer/Hydrologist, Tetra Tech, Inc, 2012 to Present
Senior Engineer/Hydrologist, Hydrometrics, Inc, 2007 to 2012
Senior Engineer/Hydrologist, Tetra Tech, Inc, 2000 to 2007
Senior Engineer/Hydrologist, Hydrometrics, Inc, 1995 to 2000
Hydrologist, Hydrometrics, Inc., 1994 to 1995
MT Dept. of Natural Resources & Conservation, 1989 to 1994
J.W. Patterson &Associates Inc., 1987 to 1989
MT State University, Dept. of Civil Engineering, 1985 to 1987
Rockwell International, 1982 to 1985
Tetra Tech Page 2
KEITH A. JOHNSON, PE
Senior Engineer
EDUCATION
MS, Construction, Arizona State University, Del E. Webb School of Construction, 2002
MS, Civil Engineering, San Jose State University, 1983
BS, Geology, University of California at Berkeley, 1979
REGISTRATIONS/CERTIFICATIONS
Registered Civil Engineer: Arizona (#27880, 1994); California (#36659, 1983)
Solid Waste Association of North America (SWANA) Certified Landfill Manager(#199)
Certified Landfill & Livestock Project Lead Verifier(2009), California Climate Action Registry
Accredited California Air Resources Board Greenhouse Gas Verifier
NCEES Record#54923
EXPERIENCE SUMMARY
Mr. Johnson is a Registered Civil Engineer with 24 years of experience in solid waste management and
environmental engineering. His experience encompasses the full scope of landfill development, operation,
and closure services and includes siting studies, liner system construction, closure plan development,
geotechnical assessment, financial studies, design of household hazardous waste collection facilities, and
development of source reduction and recycling programs. Mr. Johnson was Project Manager for design and
CQA services during the installation of the first geosynthetic clay liner at a solid waste facility in Arizona. Mr.
Johnson's environmental experience includes site assessments, underground storage tank investigations and
environmental monitoring of soil,water and air.
SELECT PROJECT EXPERIENCE
• Texas Brine Methane Venting System Design, Bayou Come, Louisiana. Project Manager for the
design of the methane gas vent wells, piping and treatment systems. Methane gas was trapped in the
upper portion of the Mississippi River Alluvial Aquifer and was under significant pressure. The vent wells
consisted of steel casings installed with a sonic drill rig and perforated after installation. The vent wells
were logged using geophysical methods to determine the depth of the gas bearing zone prior to
perforation. The vented methane was piped to small utility flares for destruction.
• Landfill Gas Collection System Master Plan and Design, SR 85 Landfill, Buckeye, Arizona. Project
Manager for the design of the landfill gas collection system for Cells 1, 2, and 3. The system design
included a new flare station, header system, condensate collection system and landfill gas horizontal
collectors and vertical wells.
• Cell 5 Landfill Gas Extraction System Design, Skunk Creek Landfill, Phoenix,Arizona.Assisted with
the preparation of plans and specifications for the Cell 5 landfill gas extraction system and related work.
This project required coordination with the final closure construction to integrate the system into the future
closure configuration.
■ Landfill Gas Collection System Construction, 28TH Street Landfill, Sacramento, California. Project
Manager for the construction of an active gas extraction system for the 78 acre waste management unit
A. The project consisted of the installation of gas extraction wells, gas collection header piping, a
condensate storage tank, and a blower/flare station. The system was designed to collect and destroy
odorous emissions and control migration from the landfill. Emission tests to confirm the destructive
efficiency of the flare were also performed.
■ Landfill Gas System Operation and Maintenance, City of Glendale Landfill, Glendale, Arizona.
Project Manager for operation, maintenance, and monitoring of the site gas extraction and treatment
system. The project includes maintenance, monitoring and adjustment of landfill gas wells, probe
monitoring, correction/repair of system malfunctions, leaks, and verification of proper operation.
■ Operation and Maintenance of Landfill Gas Management Systems, Phoenix Arizona. Project
Manager for ongoing operation, maintenance, and monitoring of landfill gas extraction and treatment
systems at the closed Skunk Creek Landfill (SCLF), the closed 27th Avenue Landfill and flare stations at
Tetra Tech Page 9
KEITH A.JOHNSON, PE
the closed 19th Avenue Landfill. Overall objectives of the program are to minimize extraordinary
expenditures by instituting and following a preventative maintenance program; ensuring that the LFGS is
operated in a safe and efficient manner to avoid public complaints, permit violations, marginal or poor
performance and excessive cost; and monitoring/tuning gas wells to minimize surface emissions.
• Landfill Gas to Energy Evaluation Report, Vincent Mullins and Harrison Landfills, Tucson,Arizona.
Prepared a comprehensive evaluation of the potential landfill gas to energy projects at both landfills. This
report included landfill gas generation estimates, an extensive evaluation of the credits and incentives
available, options for beneficial use of the gas, air permit considerations, and economic proformas. The
report may be used by City staff to prepare Request for Proposals for gas to energy projects at each site.
• Landfill Gas Extraction System Construction Management, 19th Avenue Landfill, Phoenix,
Arizona. Provided construction management during the expansion of the landfill gas extraction system.
The system expansion included construction of 66 active landfill gas extraction wells, 4 multi-stage landfill
gas monitoring probes, installation of 5,650 lineal feet of header pipe and 3,880 feet of gas collection
pipe, modification of a flare station, fabrication and installation of 14 landfill gas condensate sumps, and
start-up of the entire system.
■ City of Eloy Landfill Master Plan, Eloy Municipal Landfill, Eloy, Arizona. Prepared the Master Plan
for the facility. This project included solid waste planning, site life projections, environmental compliance
review, and design modifications to laterally expand the existing waste footprint. The Master Plan also
included waste diversion options and the design of a small volume transfer station for recyclable
materials. A formal presentation to the City Council was included.
• City of Glendale Landfill Master Plan, Glendale Municipal Landfill, Glendale,Arizona. Prepared the
Master Plan for the facility. This project included solid waste planning, site life projections, environmental
compliance review, and significant revisions to the design. Design revisions to the landfill entrance, storm
water management plan, fill sequence plan and final grading plan were made. The final report was
presented to the City Council for approval.
• Maricopa County Solid Waste Strategic Plan, Phoenix,Arizona. Prepared a long range strategic plan
for the Maricopa County Solid Waste Management Department. This strategic plan encompassed the
waste tire program, landfill maintenance and monitoring, household hazardous waste collection, the
illegal dumping program, the transfer station program and financial analysis. A list of detailed
recommendations was presented in the final report.
■ Maricopa County Landfill Compliance Audits, Phoenix, Arizona. Project manager for the preparation
of compliance audits for eight solid waste landfills throughout Maricopa County. Identified all Federal,
State and local regulations applicable to each site, reviewed regulatory agencies records, reviewed site-
specific files, plans and reports, and performed site inspections to determine the compliance status of
each facility with applicable regulations
■ Landfill Gas to Energy Project, Glendale Municipal Landfill, Glendale, Arizona. Provided
design/build services to build a landfill gas-to-energy project at the City of Glendale Landfill. The project
included construction of a 69 kV substation for Arizona Public Service (APS) and an electrical
interconnect to the APS grid. Mr. Johnson was responsible for the design of the gas processing and
compression skid and a 3,312 square foot concrete building for two Jenbacher J420 GS internal
combustion engines. Mr. Johnson was the engineer of record for the project and obtained all City permits
(i.e., building, electrical, plumbing / mechanical, fire, backflow/CC-domestic, and ROW water). The plant
became operational on December 16, 2009, and received its Commercial Operation Certificate from APS
on January 13, 2010. Total construction cost was $5 million.
■ Landfill Gas to Energy Evaluation Report, Skunk Creek Landfill, Phoenix, Arizona. Prepared an
evaluation of the potential landfill gas to energy projects at the Skunk Creek Landfill. This report included
landfill gas generation estimates, an extensive evaluation of the credits and incentives available, options
for beneficial use of the gas, air permit considerations, and economic proformas. The report was used by
City staff to prepare a Request for Proposals for landfill gas to energy projects at the site and to evaluate
the proposals submitted.
Tetra Tech Page 2
MAUREEN A. MCGRAW, PHD, PE
Civil Engineering:Hydrologist
EDUCATION
PhD, Mineral Engineering, University of California-Berkeley, 1996
MS, Civil Engineering, University of Texas, 1989
BS, Natural Resources, University of Michigan, 1987
REGISTRATIONS/CERTIFICATIONS
Professional Engineer: Montana(#16415, 2004), New Mexico (#15798, 2002)
EXPERIENCE SUMMARY
Dr. McGraw has over 18 years of experience addressing groundwater and vadose zone contamination
through design of remediation systems and numerical modeling. She has conducted site evaluations to
determine the most appropriate remediation technologies, complied with regulatory requirements, completed
regulatory reports, and implemented various remediation approaches including soil vapor extraction (SVE),
air sparging, dual phase recovery, and hydraulic control. She has applied finite element and finite difference
groundwater and vadose zone flow and transport (mass and heat) models to a wide variety of these
problems. She has designed and conducted laboratory experiments, field experiments, and provided a bridge
to integrate laboratory and field data into numerical models. In addition, she has designed structures around
explosive devices, designed systems to treat mixed waste, and applied geostatistics to design/guide field
sampling. Her strength is her ability to integrate different types of information, and her creative approach to
address project needs.
SELECT PROJECT EXPERIENCE
Groundwater and Vadose Zone Hydrology
• Petroleum Products Terminal, Boise, Idaho. Technical lead for effort to remediate the site after an
accidental release of 70,000 gallons of gasoline occurred in January 2013. Efforts included analysis of
pumping tests, selection of air stripper, disposal of treated water (irrigation and underground injection
gallery), selection and partial design of a soil vapor extraction system, selection of wells for dual phase
recovery, oversight for site monitoring, interface with Idaho Department of Environmental Quality, various
reports (work plan, remedial investigation, feasibility study, corrective action plan, and monthly data
reports), interface with client, design of winterization plan for piping, directing of field test (e.g. infiltration,
injection, pumping), and coordination of field activities as required.
■ Various Mine Sites, Montana. Wrote and secured Class V injection permit for Land Application Disposal
System.
■ Missoula Airport Authority, Missoula, Montana. Developed Storm Water pollution Prevention Plan
(SWPPP) for the site, and addressed issues related to disposal of airline deicing fluid.
■ Lignite Coal Mine, Louisiana. Developed a numerical model for the design of a dewatering system for
the expansion of multiple sections of a lignite mine. The model was used to optimize the dewatering
system in conjunction with a slurry wall. Provided technical assistance to the mine on groundwater flux
rates into the pit from breaching of a slurry wall. Designed and implemented hydrologic test to evaluate
aquifer properties. Reviewed and incorporated field data into the model, and assisted with data analysis
and interpretation as required for other aspects of the project.
■ Multiple Petroleum Contaminated Sites, Montana. Evaluated different treatment scenarios for either
site remediation or containment at the property boundary for petroleum hydrocarbons. Made
recommendations, designed pilot scale tests, developed and implemented remediation plans.
■ Bitterroot Valley Sanitary Landfill, Victor, Montana. Upgraded MODFLOW model of site. The major
modifications include refinement of the grid in the area of interest, refinement of the upper aquifer,
modification of the boundary conditions, addition of calibration targets between layers to improve
calibration of the vertical hydraulic conductivity, and explicit representation of the aquitards in the model.
Tetra Tech Page 1
MAUREEN A. MCGRAW, PHD, PE
■ Teague, Texas. Modeled vadose zone air-flow with MODFLOW-SURFACT to optimize the design of a
soil vapor extraction (SVE) system for a petroleum spill. A horizontal SVE was designed that cycled
between different lines to minimize groundwater mounding.
■ Yucca Mountain Project, Nevada. Participated in the development of an unsaturated colloid transport
model for the Yucca Mountain Project based on experimental data.
■ Fracture Flow Model Development. Tested a generalized dual porosity method as part of a model
development effort. The model is used to simulate fracture flow when matrix diffusion is important or in
layered hydrologic units that alternate between fracture and matrix dominated flow.
• Model Development for Transport of Radionuclides and Colloids, Nevada. Participated in the
development of a model for transport of radionuclides and colloids through saturated fractured rock at the
Nevada Test Site, NV. Assembled diverse data sets necessary for simulations, including fracture
properties, water chemistry, radionuclide sorption parameters, and hydrologic properties.
■ Numerical Modeling, Department of Energy, Yucca Mountain, Nevada. Provided technical support to
Department of Energy staff on numerical modeling of groundwater and vadose zone flow and transport,
performance assessment, and geochemistry at Yucca Mountain, NV.
Geochemica/Evaluation
• Soil Treatability Studies. Conducted soil treatability studies to evaluate techniques for immobilizing
barium in soils.
■ Cerro Grande Fire Ash Analysis, Los Alamos, New Mexico. Studied ash samples to evaluate their
potential to increase contaminant migration in storm runoff.
■ Colloid Transport Experiments, Yucca Mountain, Nevada. Conducted saturated crushed rock column
studies to evaluate physical and chemical controls on colloid transport through the Middle Nonlithophysal
and Upper Lithophysal units of the Topopah Spring at Yucca Mountain. These included evaluation of
cation exchange capacity, ionic strength, and competition between different colloids.
• Unsaturated and Saturated Colloid Transport Experiments, Hanford Site, Washington. Conducted
saturated and unsaturated column experiments on colloid transport through sand for the Hanford Site.
Examined how surface functional groups, surface charge density, degree of saturation, and particle size
influenced colloid mobility.
• Chemical Modeling of Fractured Surfaces. Modeled surface complexation and ion exchange reactions
on fracture mineral surfaces.
PROFESSIONAL AFFILIATIONS
American Society of Civil Engineers, Member
PROFESSIONAL EMPLOYMENT HISTORY
Hydrology/Engineer, Tetra Tech, 2010 to Present
Adjunct Assistant Professor, University of Montana, 2006 to 2008
Research Assistant Professor, University of Montana, 2005 to 2008
Technical Staff Member, Los Alamos National Laboratory, 1998 to 2005
Postdoctoral Research Associate, Los Alamos National Laboratory, 1997 to 1998
GeoEngineer, Golder Federal Services, 1997
Doctoral Fellowship, Pacific Northwest National Laboratories, 1994 to 1996
Graduate Research Assistant, University of California-Berkeley,1994 to 1996
Consultant, Sandia National Laboratory, 1993 to 1994
Outstanding Summer Student Program, Sandia National Laboratory, 1993
Teaching Assistant, University of California-Berkeley, 1993
Graduate Research Assistant, Lawrence Berkeley Laboratory,1991 to 1993
Engineer, Pacific Northwest Laboratory, 1990 to 1991
Tetra Tech Page 2
KIRK A. MILLER
Environmental. Senior Project Manager
EDUCATION
Graduate Professional Degree, Hydrogeology, Colorado School of Mines, 1988
BS, Geology, Montana State University, 1980
EXPERIENCE SUMMARY
Mr. Miller has over 30 years' experience managing and conducting site investigation, remediation, and
regulatory permitting projects throughout the western United States and internationally. He has assisted
clients with facilities regulated under CERCLA, RCRA, TSCA, CWA, Brownfields and their companion State
programs. Mr. Miller has managed multi-disciplinary teams of professionals, successfully integrating scientific,
engineering, and financial teams to achieve client goals. He has interacted extensively with public officials
and the general public in a wide range of venues including public meetings, presentations to city
commissions, county commissions, legislative committees and conferences. Mr. Miller has extensive
experience implementing Tetra Tech and client specific Health & Safety programs and is committed to
maintaining safe work environments both on project sites and in the office.
SELECT PROJECT EXPERIENCE
■ Story Mill Landfill, City of Bozeman, Gallatin County, Bozeman, Montana. Project Manager for a
vapor intrusion study of this closed landfill facility. Developed program to investigate the potential for
volatile organic compounds emanating from a former unlined cell to migrate into an adjacent
neighborhood. Managed the installation and sampling of soil vapor probes, indoor air and subslab air
sampling of homes and the design and installation of home mitigation systems. Developed a conceptual
model of VOC migration from the unlined cell into the neighborhood and interacted extensively with
homeowners in the affected neighborhoods. Program covered 30 homes in two neighborhoods as well as
buildings on the landfill site. Supported the City in public meetings by developing and presenting
information. Completed investigation of the problem and design and installation of 26 home mitigations
systems in less than 10 months.
■ Richland County Landfill Remediation, Richland County, Richland County, Sidney, Montana. As
Project Manager for this RCRA Corrective Measures Assessment he leads a technical team in monitoring
well installation, groundwater quality monitoring, aquifer testing, remedial design and implementation and
report preparation. As Project Manager for this RCRA Corrective Measures Assessment he led a
technical team in monitoring well installation, groundwater quality monitoring, aquifer testing, remedial
design and implementation and report preparation. This project is updating a 1995 RCRA Corrective
Measures Assessment for a closed landfill. A revised CMA was developed, which identified the need for
additional monitoring wells and pilot testing of active soil venting, groundwater pumping and hydrogen
release compound injection alternatives. Aquifer testing included slug testing of wells, installation and
testing of two pump test sites and installation of one hydrogen release compound test site. An eight
extraction well pilot landfill gas extraction system is being designed for implementation in 2014.
■ Bannock County Landfill RI/FS, Remedial Design and Implementation, Idaho. Project Manager for
county landfill remediation project. Installed 29 monitoring wells and conducted aquifer testing, a soil gas
survey of the old landfill, geophysical surveys (seismic refraction and electromagnetic induction), surface
water gauging and groundwater modeling. Data analysis focused on several possible contaminant
sources and the relationship between contamination in three separate but interconnected aquifers. A
remedial investigation report was submitted and approved by Idaho DEQ. Feasibility study evaluated air
sparging (with air and ozone), soil vapor extraction, groundwater pumping with air stripping and ultra
violet oxidation treatment, reactive zone technologies, in-well stripping for groundwater control and landfill
gas extraction and landfill bioreactor technologies for source control. Conducted pilot testing to further
refine feasibility study cost estimates. Prepared remedial design documents, assist Bannock County with
contractor bidding, and provide construction, monitoring, and system oversight.
• Petroleum Products Terminal Groundwater Remediation, Nampa, Idaho. Project Manager for
remediation of a petroleum product terminal for a commercial retail developer. Site had extensive soil and
groundwater impacts that required rapid implementation of a remedial system prior to project
Tetra Tech Page 1
KIRK A. MILLER
construction. Tasks included review of prior owner's consultant reports, installation of over 30 direct push
points, groundwater monitoring, evaluation of remedial alternatives, and remedial design and
implementation. Developed remedial alternatives to address short construction window and proposed
building locations. Prepared bid plans and specifications for all remediation work and provided oversight
of their implementation. Closely coordinated remediation system installation with concurrent construction
of retail buildings. Coordinated daily with the client's construction manager to expedite the remediation
system installation. Completed entire project from investigation through closure in seven months.
• CMC Bozeman Remedial Design and Implementation, East Main Depot site, City of Bozeman,
Montana, Bozeman, Montana. Project Manager for remedial design and implementation phases of this
soil clean-up project in downtown Bozeman. Asbestos was widespread in soil along South Wallace
Avenue as a result of historic asbestos ore processing operations and the use of waste materials as
backfill around the neighborhood. Prepared a Voluntary Cleanup Plan (VCP) and assisted City with
extensive negotiations with DEQ to establish clean-up parameters, protective measures for the public and
criteria for PRPs to recoup majority of investigation and costs through Montana's Orphan Share fund.
Managed implementation of VCP and associated change orders and preparation of a Construction
Completion Report, which was accepted by DEQ.
■ Montana City Store Groundwater, Montana City, Montana. Project Manager for site investigation at
convenience store with prior petroleum release. Conducted review of existing monitoring well network to
evaluate whether it adequately delineated groundwater plume. Conducted test of existing soil vapor
extraction system to evaluate its effectiveness in removing hydrocarbons from the subsurface. Prepared
several work plans and quarterly monitoring reports.
■ Creosote Contamination Project Investigations, Libby, Montana. Assistant Project Manager/Field
Manager responsible for directing investigations over a four-year period at this Montana Superfund site.
Tasks included analysis of hydrogeologic data, installation of a pilot bioremediation facility and
preparation of remedial investigation and feasibility study (RI/FS) reports. Implemented a pilot in situ
bioremediation program that consisted of construction, testing and operation of a hydrogen peroxide
injection system. This successful pilot program led to this technique's selection for full-scale remediation
by the US Environmental Protection Agency's (EPA) Record of Decision. This was the first full-scale in
situ bioremediation program approved by EPA for the Superfund program.
■ Perchloroethylene-contaminated Site Investigation and Remediation, Southern Idaho. As Project
Manager, assisted counsel in negotiations with Idaho DEQ regarding terms of a consent order that would
allow the property owner/client to investigate the site but not assume responsibility for remediation of PCE
contamination by a tenant. Conducted technical analysis of existing data to identify data gaps and the
extent of groundwater contamination. Managed investigation of soil and groundwater contamination and
development of remediation cost estimates to assist counsel in litigation against dry cleaner owners.
Designed and implemented soil removal from primary source area.
■ Investigation and Remediation of Free Product Seep from Bulk Fuel Terminal. Project Manager
responsible for evaluating free product and dissolved phase plumes, free product seeps into a reservoir,
and soil contamination. Completed a feasibility study to evaluate remedial alternatives for source area
and contaminated beach sediments. Prepared a corrective action plan (CAP) and implemented a soil
vapor extraction and air sparging system to address groundwater impacts. Conducted additional
characterization of the contaminated beach sediments using a boat to sample through the water column.
This program required special measures on the beach and around the sampling boat to control sediment
and LNAPL. Completed a RBCA report to establish clean-up criteria. Developed a second CAP to
implement a beach excavation program. Due to the potential presence of endangered snail species in the
reservoir, project required preparation of biological assessments and consultation with US Fish and
Wildlife Service for two beach sampling efforts.
PROFESSIONAL EMPLOYMENT HISTORY
Senior Project Manager, Tetra Tech, 1995 to Present
Northwest Regional Manager then President, EnviroSearch International Inc., 1990 to 1995
Project Hydrogeologist, Chen-Northern, 1989 to 1990
Senior Staff to Assistant Project Hydrogeologist, Woodward-Clyde Consultants, 1984 to 1989
Tetra Tech Page 2
MARK F. PEARSON
Environmental Scientist and Geologist
EDUCATION
MS, Geology, Minor: Geophysics, University of Texas-El Paso, 1985
BS, Geology, University of Montana, 1978
EXPERIENCE SUMMARY
Mr. Pearson is an environmental scientist and geologist with over 30 years of professional experience in a
variety of environmental, geotechnical, and mineral exploration/development projects. He has extensive
experience conducting environmental site investigations pertaining to media impacted with volatile organic
compounds, chlorinated solvents, metals, and other inorganic compounds. Mr. Pearson has been involved in
the development, design, and implementation of surface and ground water monitoring, and ground water and
soil remediation systems. Mr. Pearson has conducted performance monitoring, data analysis, and reporting in
these types of projects.
SELECT PROJECT EXPERIENCE
Solid Waste Facilities Investigation, Monitoring, and Remediation
■ Contaminant Investigation, Monitoring, and Remediation at a Closed Landfill Facility, Eastern
Montana. Assistant Project Manager responsible for chlorinated solvents investigation, preparation of a
revised corrective measures assessment, communication of results to regulatory agencies and the public,
supervision of corrective action groundwater monitoring, and remediation system
design/installation/operation. (2009 to Present)
■ Contaminant Investigation, Monitoring, and Remediation at an Active Landfill Facility, Eastern
Montana. Project Manager responsible for impacted groundwater and landfill gas investigation,
hydrogeologic analysis, and monitoring well installations. (2010 to 2013).
• Contaminant Investigation, Monitoring, and Remediation at a Closed Landfill Facility, Central
Montana. Assistant Project Manager responsible for corrective action groundwater monitoring, landfill
gas monitoring, supervision of landfill gas extraction system and flare station, and analysis and reporting
of results. Environmental services have increased in scope to include soil gas investigation, vapor
intrusion (into residential structures) investigations, and client/regulatory/public liaison. (2002 to Present)
Petroleum Hydrocarbon and Chlorinated Solvent Release Investigations and Remediation
■ Petroleum Hydrocarbon Release Investigations and Monitoring, Montana. Project Manager
responsible for development and implementation of investigations and water and soil monitoring of sites
with petroleum hydrocarbon releases. (1990 to Present)
• Solvent Release Site Investigation and Monitoring, Bozeman and Billings, Montana. As
Environmental Scientist, conducted investigations, monitoring, and reporting at two solvent release sites
in Bozeman and Billings. Implemented field programs to monitor surface and groundwater conditions,
conducted data reduction, interpreted data, and prepared reports. (2000 to 2005)
■ Design and Operation of In Situ Remediation Systems, Eastern Montana. Project Manager
responsible for design and implementation of in situ remediation systems for petroleum hydrocarbon-
impacted soil and groundwater for four hydrocarbon/LUST projects. (1991 to 2000)
• Design and Implementation of Chemical Oxidation Remediation Pilot Tests, Eastern Montana.
Project Manager responsible for design and implementation of remediation pilot tests using hydrogen
peroxide to treat gasoline and diesel impacted soil and groundwater at former and active fueling facilities.
(1997 to 1999)
Environmental Assessment/Environmental Impact/Risk Assessment
■ Real Estate Transaction Services, Central Montana. As Environmental Scientist, develop
investigations, conduct research and fieldwork, and prepare Phase I and II environmental site
assessments. (1992 to Present)
Tetra Tech Page 1
MARK F. PEARSON
■ Preliminary Exposure Pathway Assessment, Petroleum Products Terminal, Bozeman, Montana.
As Environmental Scientist, conducted research, field reconnaissance, and prepared reports evaluating
surface water and groundwater pathways for emergency planning at a petroleum products terminal.
(2001 to 2002)
• Sociologic and Economic Impact Studies, Spanish Translation and Interpretation, Peru. Project
Scientist responsible for reviewing sociologic and economic impact reports written in Spanish, translating
the reports into English, and interpreting sociologic and economic impact studies pertaining to a mining
project near Cajamarca, Peru. (2003)
• Marsh Estuary System Hydrologic Study Evaluation, Venezuela. As Project Scientist, participated in
an evaluation of hydrologic studies of a marsh-estuary system for expansion of a solar salt production
facility. Responsible for translation of technical documents from Spanish to English, data interpretation
and client liaison. (1998)
Groundwater Supply/Modeling
■ Groundwater Baseline Studies, Southeast Idaho. As Environmental Scientist, developed and
implemented field drilling and monitoring programs as part of baseline and water supply studies at two
proposed phosphate mine sites in Caribou County. (2001 to 2002)
• Feasibility Study and Infiltration Basin Design of Sewage Drain Field, Yellowstone National Park,
Wyoming. Project Scientist responsible for modeling, reporting, infiltration testing (using various
techniques) and field collection of soil and groundwater data at Canyon Village for the National Park
Service. (1992)
Mine Hydrology/Permitting/Development/Inventory
• Surface and Groundwater Monitoring, South-central Montana. As Environmental Scientist,
implement field programs to monitor surface and groundwater conditions and the effectiveness of
reclamation activities at a metal mining district in the Beartooth Mountains. Conduct data reduction and
interpretation and prepare (2001 to Present)
■ Preparation of Mineral Resource Inventories, Central Montana and Northwest Nevada. As
Geologist, conducted research and prepared reports detailing mineral deposits and development as part
of resource management plans for the Bureau of Land Management. (2005)
Geotechnical Investigations
■ Tower and Building Foundation Investigations, South-central Montana. As Geologist, conducted
logging and interpreted hollow-stem auger drilling samples for foundation investigations. (2005 to 2007)
• Seismic Retrofit of Highway Bridge, South-central Montana. As Geologist, conducted logging and
interpreted rotary and core drilling samples for a bridge replacement project near Logan. (2007)
CONTINUING EDUCATION
OSHA 8-hr HAZWOPER Refresher, 2007
OSHA 8-hr HAZWOPER Supervisor Training, 1992
OSHA 40-hr HAZWOPER, 1988
Course: Database Management(CIT 205) (Montana State University), 2007
Course: Groundwater Supply and Remediation (BREN 434) (Montana State University), 2006
Course: Soil Remediation (LRES 460) (Montana State University), 2005
PROFESSIONAL EMPLOYMENT HISTORY
Environmental Scientist, Tetra Tech, 1988 to Present
Geologist, Pangea Resources, Helena, MT and Sidney, Australia, 1986 to 1988
Consulting Geologist/Geologist, Pioneer Nuclear Corporation, 1982 to 1985
Geologist, American Copper& Nickel Company, 1981 to 1982
Geologist, St. Joe American Corporation, 1980 to 1981
Geologist, Homestake Mining Company, 1979 to 1980
Tetra Tech Page 2
PETER A. RICH, PE
Principal Engineer
EDUCATION
BS, Civil and Environmental Engineering, Duke University, 1987
REGISTRATIONS/CERTIFICATIONS
Professional Engineer: Virginia (#024217), Maryland (#20056), New York (#072252), New Jersey
(#GE45644), Arizona (#41574)
EXPERIENCE SUMMARY
Mr. Rich has more than 25 years of experience in groundwater treatment system alternative evaluation,
design, installation, operation and optimization; vapor intrusion and soil vapor extraction systems; landfill
remedial measures implementation; hydraulic design for water, wastewater and stormwater piping systems;
Manufactured Gas Plant (MGP) investigation and remediation; wood treating site investigation and
remediation; petroleum hydrocarbon related site assessment and corrective action; solid, industrial, and
hazardous waste management; potable water, wastewater and storm water treatment design; pollution
prevention; and regulatory permitting.
SELECT PROJECT EXPERIENCE
■ Lockheed Martin Corporation, Middle River, Maryland. Project manager and engineer for design,
construction and operation of two sub-slab depressurization systems to mitigate vapor intrusion into an
active facility. Designs were completed and the systems were installed and began operations within six
weeks of authorization. The systems have operated as expected since spring 2008 providing appropriate
vacuum influence. In addition to the vapor mitigation work, manager for removal and disposal of soil and
water at a former AST site and building loading dock construction.
• L&D Landfill, Mount Holly, New Jersey. Principal engineer for an innovative groundwater and leachate
recirculation system to contain a ground water plume and degrade source material within a landfill cell
using water and air injection. The feasibility study and design were approved by NJDEP and EPA.
Construction was completed in 2007 and the remedy was effective at decreasing groundwater
concentrations so that the air injection has been terminated and groundwater pumping has been reduced
by 75%.
• Bozeman Landfill, Montana. Design engineer for vapor intrusion mitigation systems for residences near
the landfill. Services included presentation at a public meeting, conceptual design for over 20 homes,
assistance during system construction and operation prove-out.
■ Sandy Hill Creative Disposal Facility, Prince George's County, MD; Pappys Landfill, Baltimore
County, MD; Hunting Ridge Landfill, Dorchester County, MD; and PST Landfill, Anne Arundel
County, MD. Project manager for permitting and site investigation tasks. Work has included groundwater
discharge permitting, direct push groundwater investigations and landfill gas migration delineation and
mitigation design and implementation.
■ USEPA, Technology Innovation Office (TIO) and Office of Emergency and Remedial Response
(OERR). Lead expert engineer on Remedial System Evaluations (RSEs) at over 50 "Fund-Lead"
Superfund sites with operating remedial systems. Final published reports for these sites include
numerous recommendations that when implemented will result in more effective systems, saving millions
of dollars and completing active remediation more quickly. The USEPA Office of Inspector General
praised this program. Follow-up evaluations conducted as part of this program indicate that many cost-
saving recommendations have been implemented within a year of the RSEs.
• Wood Treating Site, Mississippi. Project manager for design of an Interim Measure for remediation of
stream sediments, a former wastewater lagoon and wood disposal area. Designed and obtained permits
and approval from the Corps of Engineers and EPA Region IV for sediment removal, impacted water
treatment and discharge and disposal in an onsite capped impoundment. Removed and capped over
Tetra Tech Page I
PETER A. RICH, PE
3000 CY of sediments and treated over 200,000 gallons of water through a temporary filtration and GAC
system with no permit violations.
• Municipal Landfills, Howard County, Maryland. Project engineer for the design and construction of the
containment of chlorinated solvent plumes at two closed and one active landfill site. The remedies
included multi-well extraction systems and treatment with air strippers (50 gpm to 200 gpm flow rates).
Responsible for groundwater withdrawal and NPDES discharge permitting for each site.
• Air BP, Dulles Airport - Design engineer for pollution prevention and storm water treatment facilities.
Work has included completion of an Integrated Contingency Plan, identification and repair of leaking
hydrant pits, design of a treatment system to allow collected pit water to be discharged to the sanitary
sewer rather than transported offsite for disposal.
• Whitmoyer Laboratories Superfund Site, Central Pennsylvania. Engineer for the design and
installation of a ground-water treatment system to remove arsenic, aniline, and VOCs. A pilot scale (20
gpm) system was operated at the site from 1994 to 1996 to treat water generated during well sampling,
aquifer testing, and decontamination activities. The system consisted of electrochemical precipitation,
clarification, filtration, and GAC adsorption. More than one million gallons of water was treated
successfully and extensive information was obtained to scale up to a capacity of approximately 200 gpm.
■ Former Capacitor Manufacturing Plant, Massachusetts. Project engineer for remediation efforts.
Performed construction support services at a drum removal operation. In a period shorter than 60 days,
obtained a temporary NPDES permit, then treated below drinking water standards and discharged 40,000
gallons of wastewater, that had contained elevated levels of PCBs, volatile organic compounds, and
metals.
• Major Utility Site, Maryland. Project manager for the evaluation of bench and pilot scale tests,
preparation of conceptual design, final design drawings, and specifications, and construction support for
an oil recovery/groundwater treatment system. The treatment system consisted of oil/water separation,
chemical oxidation, flocculation, clarification, filtration, and carbon adsorption.
■ Several Municipalities, Maryland and Michigan. Project engineer for upgrades at POTWs including
activated sludge, RBCs, and trickling filters. Also project engineer for inflow and infiltration studies and
construction manager of conveyance system repairs.
■ Industrial, Commercial, and Agricultural Properties, Nationwide. Conducted environmental
assessments and regulatory compliance investigations. These investigations included a review of in
house documents, a review of local, state, and Federal agency files at more than 100 properties, onsite
field inspections, sampling, testing, and interviews with facility personnel.
• Municipal Landfills, Maryland and Virginia. Project engineer for leachate and borrow pit dewatering
water treatment systems. Conducted Feasibility Studies according the U.S. EPA protocol to evaluate
appropriate remedial alternatives for the sites, provided construction management of leachate treatment
system upgrade and landfill capping.
• Confidential Manufacturing Client, Western North Carolina. Responsible for the design and
installation of a groundwater pump and treat system that met an accelerated (less than four months) EPA
required schedule. Also designing a containment system for site landfills and impoundments and
conducting a natural attenuation study to limit pump and treat system operation life span.
• Three Sites, Virginia and Massachusetts. Performed Remediation of Petroleum Contamination. Design
of collection and treatment systems was conducted to enhance free phase product recovery and treat
groundwater to discharge standards. At one site, steam injection was used to promote migration of
product to recovery wells.
Tetra Tech Page 2
Bozeman City Landfill Corrective Action Plan Engineering and Professional Services
APPENDIX AFFIRMATION
TETRA TECH City of Bozeman
NON-DISCRIMINATION AFFIRMATION FORM
Tetra Tech,Inc. [name of entity submitting]hereby affirms it will not discriminate on the basis of
race, color, religion, creed, sex, age, marital status, national origin, or because of actual or
perceived sexual orientation, gender identity or disability in the performance of work
performed for the city of Bozeman, if a contract is awarded to it, and also recognizes the
eventual contract,if awarded,will contain a provision prohibiting discrimination as described
above and that this prohibition shall apply to the hiring and treatment of the Tetra Tech,Inc.
[name of entity submitting] employees and to all subcontracts it enters into in performance of the
agreement with the city of Bozeman. &_
Signature of Bidder: I
Person authorized to sign on behalf of the bidder
Bozeman City Landfill Corrective Action Plan Engineering and Professional Services
► BROCHURE
Tetra Tech Corporate Solid Waste Brochure is provided with insert.
OTETRA TECH City of Bozeman