response to rfp no. 19-016ca for

ELECTRONIC COPY

Response to RFP No. 19-016CA for:ON-CALL ENGINEERING AND PROFESSIONAL SERVICES WATER MANAGEMENT PROGRAMS AND ENGINEERING

Submitted to:City of Corona

December 20, 2018

Technical Excellence Practical Experience Client Responsiveness

SUSTAINABLE DESIGN

HEALTH & SAFETY

Langan is committed to providing a healthy and safe working environment. Langan’s goal is to be SAFE (Stay Accident Free

Langan professionals design solutions that maintain the inherent connections between structures and their natural surroundings. The result - sustainable communities for future generations to

TOCTable of Contents:1. Letter of Transmittal.....................................................................42. Qualifications, Related Experience and References.................63. Proposed Staffing and Project Organization............................204. Licensing and Certification Requirements...............................435. Price Forms.................................................................................506. Non-Collusion Declaration.........................................................577. Required Forms...........................................................................59

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1Letter of Transmittal

20 December 2018

Ms. Carol Appelt City of Corona Administrative Services Department – Purchasing Division 400 South Vicintia Ave., Suite 320 Corona, CA 92882 Re:

RFP No. 19-016CA On-call Engineering & Professional Consulting Services Section Q — Water Management Programs and Engineering

Dear Ms. Appelt:

Langan Engineering and Environmental Services Inc. (Langan) is pleased to submit this proposal for Section Q to provide groundwater management programs and engineering services for the City of Corona Department of Water and Power (City). The Langan team offers the following benefits to the City and the basin stakeholders.

• Langan’s project team will leverage their long history of working in the California basins, existing databases, previous groundwater studies, and experience with modeling, basin management plans and investigations, and field investigations to advance the understanding of the Upper Santa Ana Valley Basin’s and sub-basins’s hydrogeology and groundwater conditions. Our key team members — Eros Bilyeu, Varinder Oberoi, Dorinda Shipman, and Philip Tringale — have a long history of working in the basins, dating back to the 1980s.

• Our understanding of the basins will prove to be an asset in the development of defensible models, hydrogeological studies, and stormwater and groundwater management and Sustainable Groundwater Management Act (SGMA) plans, resulting in approval from stakeholders and regulatory agencies.

• We are committed to providing responsive services to the City. Key personnel of Langan’s project team are locally based in our Irvine office, enabling frequent face-to-face meetings, including informal working sessions; you will always know the status of our services.

We look forward to your response to our proposal. On behalf of Langan, we acknowledge receipt of addendums 1, 2, and 3, and acknowledge this proposal shall remain valid for a period of not less than 90 days from the date of submittal.

Sincerely,

Langan Engineering and Environmental Services, Inc.

Eros A. Bilyeu, PG, CHG Project Geologist 949.255.8656 | [email protected]

Rory Johnston, PE, BCEE Principal/Vice President 973.560.4978 | [email protected]

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2Qualifications, Related Experience and References

City of Corona: Water Management Programs and Engineering Proposal

Langan is a privately held consulting firm with over 1,100 employees in 28 offices around the world. Since its establishment in 1970, Langan has demonstrated a strong financial standing.

We have been providing services in California for three decades. Today, our California offices are in Irvine, Los Angeles, Sacramento, San Francisco, Oakland, and San Jose. Langan is listed among the “Top 10 Environmental and Geotechnical Firms” in ENR California. With the experience and technical resources of a large firm, Langan provides the personal service and flexibility of a smaller firm. We operate under a Corporate Sustainability Plan as a carbon neutral business.

Langan’s services includes the following:

Our experience with the California basins, modeling capabilities, databases, and tools will allow the City to apply our team’s previous work to develop models, planning studies, and surface and groundwater management strategies. Our aim is to assure SGMA compliance and help facilitate agency and stakeholder support as well as deepen our understanding of the City’s hydrogeology and groundwater resources and local groundwater supply. Members of our team are recognized experts in their respective fields and have been involved in some of the most challenging and visible projects in California. To demonstrate our qualifications, we selected a cross-section of projects for this proposal. We also carefully considered what you will need to successfully develop and implement management programs, studies, modeling, and compliance efforts, and meet your other strategic goals, within the City’s budget.

• Environmental Consulting• Site/Civil Engineering• Geotechnical Engineering• Foundation Design• Earthquake/Seismic• GIS/Data Management Services• 3D Laser Scanning• Building Information Modeling (BIM)

• Surveying• Waterfront Design• Asbestos, LBP, Indoor Air Quality/Mold Consulting• Natural Resources Assessments & Permitting• Flood Protection• Landscape Architecture + Planning• Transportation/Traffic Engineering• EHS Management and Compliance

Firm Profile


Langan works side-by-side with municipal, federal, state, and local agencies either directly as a consultant or indirectly as a project team member. We draw not only on our past projects that are relevant to the project at hand, but also look to the existing relationships we have formed over the years with various regulatory agencies for input. These working relationships are a testament to our proven capacity for effective teamwork, facilitating access and successful regulatory negotiations.

Public agencies seek out Langan to provide groundwater resources engineering services for various projects. Langan prepares a detailed agency scope and approval matrixes, leads technical workshops, and coordinates the timing of all stakeholders towards project completion. We have held, and continue to hold, numerous contracts with public agencies.

We have provided services to the following public agencies:

• City of Los Angeles, Department of Public Works

• Los Angeles Department of Water and Power

• City and County of San Francisco, Department of Public Works

• Santa Clara Valley Water District• Port of Oakland• Port of San Francisco• Port of Redwood City• Port of Long Beach• National Park Service• Presidio Trust• Contra Costa Sanitary District• East Bay Municipal Utility District• Alameda Community

Development Agency• Sacramento Municipal Utility

District• San Francisco Bay Area Water

Emergency Transportation Authority

• Santa Clara Valley Transportation Authority

• City of Alameda• City of Albany

• City of Anaheim• City of Antioch• City of Berkeley• City of Brea• City of Brentwood• City of Brisbane• City of Cupertino• City of Dublin• City of El Cerrito• City of Eureka• City of Fremont• City of Hayward• City of Hercules• City of Huntington Beach• City of Irvine, Public Works• City of Lodi• City of Milpitas• City of Modesto• City of Moreno Valley• City of Mountain View• City of Newark• City of Oakland• City of Pacifica

• City of Petaluma• City of Pinole• City of Pittsburg• City of Pomona• City of Richmond• City of San Bruno• City of San Leandro• City of San Mateo• City of San Pablo• City of Santa Ana• City of Sonoma• City of South San Francisco• City of Stockton• City of Sunnyvale• City & County of San Francisco• County of Los Angeles• County of Orange• County of Sonoma• San Francisco International Airport• US Navy• US Coast Guard

Public Agency Experience


Langan has expertise related to water resources development in support of land development and irrigation related uses. Our services include the following:

• Project Management• Water Supply Source Feasibility Studies• Water Supply Exploratory Drilling• Hydrologic/Water Balance • Infiltration Testing • Hydraulic Mounding Analysis• Aquifer Testing and Modeling• Safe Yield and Sustainable Yield Assessments• Analytical/Semi-Analytical Groundwater Flow and

Transport Modeling • Finite Difference and Finite Element Three-dimensional

Ground Water Flow and Transport Modeling• Non-Aqueous Phase Liquid Seepage and Recoverability

Modeling• Vadose Zone Modeling to evaluate impact to

groundwater soil remediation standards.• Saltwater Intrusion Modeling• Bedrock Modeling

• Water Supply Well Design and Permitting • Optimization of Remediation Pumping • Hydrologic/Hydraulic Analyses• Groundwater Recharge Studies & Design• Water Intake Structure Design• Water Supply Construction Administration• Pump House Design/ Permitting• Stream Flow Evaluation• Drought Management Plan• Permitting/Regulatory Compliance• Surface Water Modeling• Stormwater Infiltration Basin Design• SGMA Consulting, Engineering, and Compliance• Aquifer Storage Recovery Design and Optimization• Source Water Protection Area Evaluation• Development Groundwater Water Management and

Sustainability Plans

GMS™ MODELING

Water Resources


Because of our project teams focus on groundwater modeling, consulting, and engineering our team can partner with the City’s staff to help efficiently identify and implement effective solutions to groundwater resources issues. Our team has worked with several water districts and agencies. Our teams already has experience in the California basins with groundwater resources modeling, management, and field investigations, and our experience will help improve efficiency and provide accurate data for the City’s planned water management and engineering that may include:

Groundwater Services

The City’s local water supply is sourced from imported water from wholesalers, reclaimed water, and sub-basins within the Upper Santa Ana Valley Basin. This includes the Temescal and Riverside-Arlington Subbasin, which accounts for close to 70% percent that Western Municipal Water District (WMWD) provides to the City. Current legal, environmental, and water quality, and climate issues results in inconsistencies for local water supply. Surface flows from Coldwater Canyon are recharged in percolation pongs and extracted from City wells.

The City serves over 150,000 customers both inside the city limits and in unincorporated Riverside County. Langan’s qualifications of key staff have a deep working knowledge of the adjoining Subbasins and the Upper Santa Ana Valley Basin. Langan’s offices are close to the City’s office, and our working relationships with stakeholders, adjacent basins, and agencies will provide for efficient and timely completion of the projects that meet the objectives of the City.

• Groundwater management;• Hydrogeological studies;• Hydrologic studies;• Surface water management, storm drain diversions;• Groundwater recharge and conjunctive use;• Groundwater treatment regulatory compliance;

• Groundwater aquifer modeling;• SGMA compliance services;• Analysis, studies, and recommendations• Coordination with regulatory agencies and other

public entities

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Langan’s project team has worked with pioneers in the groundwater resources industry. Our team has experience in developing, implementing, and optimizing a 30-well aquifer storage recovery and supply well systems (ASR) in Los Posas Basins in Ventura County near Moorpark, defining basin boundaries, supporting stakeholder engagement, evaluating current and historic groundwater conditions, and developing a groundwater numerical flow model, hydrogeological conceptual model, and initial water budget for SGMA criteria.

We were the first to identify the northeast-southwest trending fault system separating the east and west Las Posas Basins based on extensive analysis of historical groundwater levels. WE also determined the hydraulic communication of the alluvial aquifer with the Fox Canyon Aquifer (FCA) and quantified the recharge to the FCA. We developed a 3-D numerical groundwater flow model to assess the water budget for the FCA and the Grimes Canyon Aquifer (GCA). The calibrated model was used to assess various ASR injection and extraction scenarios, which proved to be a good predictor of the aquifer’s response to injection and pumping.

Members of our project team have experience with the Cadiz Valley Groundwater Conservation Storage and Recovery Project assessing the volume of groundwater storage in Fenner, Cadiz, and Bristol Valleys and estimating the potential recoverable water based on detailed analysis of recharge. Development of a plan to produce up to 50,000 acre feet per year (afy) for delivery to water purveyors in the Metropolitan Water District of Southern California service area and lead a detailed assessment of impacts associating with the pumping plan including the potential for land subsidence, migration of saline water from beneath adjacent dry lakes, impacts to springs, impacts to other groundwater used and the potential for dust generation as a result of lowered groundwater levels.

Our project team has experience with the City of Oxnard and the Groundwater Recovery Enhancement and Treatment (GREAT) Program developed to address long-term water supply and wastewater reused requirements. It is a water resources program focused on wastewater recycling. The capstone of which is an Advanced Water Purification Facility (AWPF) that utilized a major portion of the secondary effluent from the City of Oxnard’s existing Waste Water Treatment Plant (WWTP) to produce high quality water. Members of the project team worked with the City of Oxnard and the stakeholders to develop and evaluate the water supply alternatives for the GREAT programs including United Water Conservation District (UWCD)

Local Experience


and Fox Canyon Groundwater Management Agency. The new water supplies would be created by treating existing WWTP effluent with the new AWPF to meet regulatory standards for direct nonpotable reuse (primarily irrigation) and direction injection into the aquifers underlying the coastal area of the south Oxnard Plain, where the effects of overdraft conditions are most severe. We later worked with Dr. Steve Bachman of UWCD to evaluate the alternatives using the USGS numerical groundwater flow model of the Santa Clara-Calleguas Basin.

The selected alternatives for the GREAT Program were shown to be effective at addressing the effects of overdraft conditions and creating long-term water supply and wastewater reuse solutions The Environmental Impact Report (EIR) was highly successful and there was no public dissent about the project or its impacts.

Our project team has experience with the Upper Santa Clara River Chloride TMDL Groundwater Surface Water Interaction Model retained by the Santa Clarita Valley Sanitation Districts and Los Angeles Region Water Control Board (LARWQCB) to develop a groundwater-surface water interaction model of the Upper Santa Clara River for the purposed of developing a TMDL for chloride. The team offered a unique numerical model code referred to as MODHMS, which provide for fully coupled groundwater-surface water interaction and mass transport.

A forward-looking groundwater/surface water interaction model (GSWIM) was developed for the period 2007 through 2030. Land use and population projections by local agencies were used to develop model representation of these changed condition including increased used of imported water, reclamation, of wastewater, and discharges to the Santa Clara River. The GAWIM has been to simulate numerous scenarios to assess effects on surface water and groundwater chloride levels. These scenarios included various levels of wastewater reclamation and reuse, various levels of treatment (for example, assuming use of reverse osmosis to remove chloride) of wastewater prior to discharge to the Santa Clara River, and alternative water management options.

Local Experience


Langan recognizes that modeling is a valuable tool for understanding and management of ground water resources, evaluating water budgets, and evaluating potential effects of regional projects and programs like groundwater banking, aquifer storage and recovery (ASR) on groundwater management. Langan has the capabilities to provide public and private organizations with local and regional groundwater flow and transport models to optimize their water supply systems and manage their water resources.

Langan sources modeling efforts with historical and recent geologic, groundwater, and chemical data managed in databases specifically tailored for storage and retrieval of environmental and GIS data. Our modeling projects rely upon various groundwater modeling platforms, like Groundwater Modeling System (GMSTM), Groundwater Vistas (GVTM), Visual MODFLOW (VMTM), and codes to provide a series of snapshots over time which are then interpreted and animated using CTech’s EVS software. This offers a clearly presented model that synthesizes a number of highly technical and complex tasks from which recommendations can be made.

Langan has developed models, managements, and studies, and evaluated groundwater basins all over California. The Figure below provides a broad scope of Langans capabilities in providing hydrogeologic services to the City and our understanding of the different groundwater basins all over California. The following summarizes Langan’s model applications for groundwater and surface water resources management, fate and transport evaluations, and litigation and mediation:

• Simulating groundwater flow and contaminant fate and transport• Evaluating and assessing groundwater management options including supply well optimization, ASRs, and

groundwater banking• Managing Regional aquifer systems with multiple users• Evaluating impacts of waste disposal from landfills and mining activities• Assessing the efficiency of aquifers• Identifying optimal design for groundwater remediation systems• Assessing saltwater intrusion into coastal aquifers• Evaluating impact of hydraulic barriers for site dewatering, seawater intrusion, and contaminant migration• Evaluating multi-party responsibility in litigation arising from disputes with regard to water supply and groundwater

contamination

Groundwater Modeling


Inyo County

San Gabriel Basin

Cadiz Valley Ground-water Conservation

San Jacinto BasinEastern Muncipal Water District

Upper Santa Ana Valley Basin

Chico

Lodi / WoodbridgeIrrigation District

Eastern San JoaquinGroundwater Sub-basin

Merced

Ripon

OrangeCounty

Burbank

Downtown LAFox Canyon Groundwater AgencyLos Posas Valley BasinCalleguas Municipal Water District

Santa Clara River Basin

Cambria

Visalia

Santa Clara

Palo Alto

San Francsico

Livermore

Groundwater Projects


The City of Lodi Water Utility is the sole water purveyor for the City of Lodi and relies primarily upon groundwater to meet the water supply needs of its businesses and over 65,000 residents. Groundwater beneath the City has been impacted by several contaminant plumes.

Since 2004, Langan has been the City of Lodi’s primary hydro-geologic consultant and program manager. We have provided program management, groundwater supply assessment and water budget analysis, groundwater model development using GMSTM, optimization of the City supply well field, evaluation of drought impacts on groundwater flow and supply, plume management, and multi-nested monitoring well, extraction well, and City of Lodi supply well design. As the primary groundwater consultant, we have performed extensive work side-by-side with the City’s engineering and legal staff, made technical presentations to the City Council, community and Water Board, and conducted public outreach and open meet-ings: Our team’s services included hydrogeological studies, aquifer testing and modeling, groundwater well installation and monitoring, SGMA studies and compliance Specifically, we:

• Developed a Hydrogeologic Conceptual Model (HCM) to characterized the hydrogeology underlying the City;

• Conducted aquifer testing at monitoring and City supply wells to estimate aquifer properties;

• Provided oversight during monitoring and supply well drilling and installation, including deep multi-nested monitoring wells;

• Provided extraction and supply well siting and design;• Conducted feasibility studies for groundwater

management alternatives;

CITY OF LODI – GROUNDWATER MODELING, HYDROGEOLOGIC, AND GROUNDWATER MANAGEMENT SERVICES

Project Experience and References

Project Dates: 2004 – Ongoing

Project Budget: $1,000,000

Client Contact Information: Charlie Swimley, Director,City of Lodi Department of Public Works,209.333.6800 ext. 6709 [email protected]


• Groundwater Monitoring – Developed a groundwater monitoring program for sampling 76 wells with approximate groundwater depths of 50 to 250 feet, and evaluating and analyzing the groundwater data; and

• Developed the City’s long term groundwater management strategies.

• Developed a multi-layer City-wide transient model using the GMSTM modeling platform that incorporates the following: ˚ Impacts of recharge from Mokelumne River (surface/groundwater interaction);

˚ Extraction from over 1,000 domestic and agricultural wells surrounding the City;

˚ Extraction from 28 City supply wells; and ˚ Deep percolation from precipitation and irrigation based on previous and current land usage

• The groundwater model has been applied to: ˚ Optimize pumping for the City’s well field by limiting the overdraft of the groundwater basin underlying the City;

˚ Estimate the water Budget, Safe Yield, and Sustainable Yield for the City of Lodi GSA as part of its SGMA requirements;

˚ Evaluate the locations for deep multi-nested monitoring wells;

˚ Evaluate the impacts of the 2011 to 2016 drought on groundwater flow and groundwater supply (groundwater management controls);

˚ Develop the water budget for the City GSA (groundwater management) for several climatic cycles including wet, dry, drought, and average years; and

˚ Evaluate potential remediation approaches to hydraulically contain and impede the migration of the contaminant plumes to City supply wells proposed ASR locations.

• For the future, the groundwater model will be applied to: ˚ Identify locations for future City supply wells; ˚ Evaluate the locations for proposed ASRs; and, ˚ Assist the City in the management of its groundwater supply system and meet its SGMA related objectives.

• The model has been used by the Water Board as a training tool for its staff to demonstrate the effective application of a groundwater flow and contaminant transport model for plume management.



California Water Service Company (Cal Water) is the water purveyor for the City of Visalia (Visalia) and the community of Goshen and relies primarily upon groundwater to meet the water supply needs of its businesses and over 130,000 residents. Since 2013, Langan has provided hydrogeologic and groundwater consulting services to help Cal Water address groundwater supply and water quality challenges. Groundwater beneath Visalia has been impacted by several PCE plumes emanating from drycleaner sites.

Langan is assisting Cal Water to understand the impacts of these PCE plumes on water supply wells, and evaluating the impact of the current drought on future groundwater supply.Langan has performed the following services for Cal Water Visalia District. Our team prepared hydrogeological studies, conducted aquifer testing and modeling, groundwater well installation and monitoring, and SGMA studies for compliance. Specific tasks are described below. • Developed a Conceptual Hydrogeologic model (CHM)

to characterize the hydrogeology underlying the City of Lodi;

• Performed downhole testing with USGS and aquifer testing on Cal Water well 32-01 to estimate aquifer properties and understand the groundwater flow from different subsurface units under transient extraction conditions; and,

• Developed a transient multi-layer groundwater and contaminant transport model using GMSTM to perform the following tasks:

˚ Simulate the groundwater flow regime in the Mid-Kaweah Groundwater sub-basin beneath Visalia;

˚ Simulate the pumping from 90 Cal Water supply wells;

˚ Simulate the impacts of pumping from more than a thousand agriculture wells;

˚ Simulate recharge due to leakage from several canals and ditches that crisscross the city;

˚ Simulate groundwater/surface water interaction; and

˚ Simulate deep percolation from precipitation

and irrigation based on previous and current land usage.

• Following its development, the groundwater model was applied to:

˚ Evaluate the impacts of several PCE plumes emanating from drycleaner sites on the Cal Water supply wells;

˚ Evaluate the impact of the 2011 to 2016 drought on Cal Water supply wells and the local groundwater basin; and

˚ Optimize Cal Water supply wells to meet it groundwater management objectives.

• For the future, the groundwater model will be applied to: ˚ Identify locations for multi-nested monitoring wells;

˚ Identify locations for future Cal Water to supply wells; and

˚ Evaluate the Water Budget for Cal Water Visalia District as part of it SGMA related objectives.

GROUNDWATER MODELING, HYDROGEOLOGIC, AND GROUNDWATER MANAGEMENT SERVICES – CAL WATER VISALIA DISTRICT, CA


Project Dates: 2013 – 2017

Project Budget: ~$400,000

Client Contact Information: Stephen Harrison California Water Service Company (Cal Water) Director of Asset Management 408.367.8528;[email protected]


Prior to joining Langan, Mr. Eros Bilyeu previously worked with the Calleguas Municipal Water District. For this project, he expanded on their previous groundwater modeling and basin management work developed for Calleguas.

He provided services for hydrogeological studies, aquifer modeling, SGMA studies and compliance, hydrologic studies, surface water management, and coordinated meeting with agencies and regulatory agencies. Specific tasks are described below.• Developed the hydrostratigraphic conceptual model in

the East, West, and South Las Posas Valley Basins for implementation into the updated numerical groundwater flow model;

• Developing working relationship with the United Water Conservation District and the Fox Canyon Groundwater Management Agency facilitating meetings and leading presentation with other stakeholders and other agencies;

• Defined hydrostratigraphic units and further refined basin boundaries of multi-aquifer hydrogeological systems for implementation;

• Predicting fluctuations associated with ASR operations and further development of a future Groundwater Sustainability Plan;

• Characterized aquifer systems with basin wide pumping test and evaluations to determine behavior of each aquifer for numerical flow model;

• Developing of a long-term operation plan for Calleguas’ Las Posas Basin Aquifer Storage Recovery (ASR) project which pioneered ASR to Ventura County in the 1980’s and was designed, implemented, and tested; and

• Mapped approximately 66 square miles and 3500 feet of aquifer units using over 100 years of documented publications and proprietary information obtained from oil companies. Previously unmapped boundaries were also delineated using paleostratigraphic methods and documentation.

CALLEGUAS MUNICIPAL WATER DISTRICT, LAS POSAS VALLEY BASINS, HYDROSTRATIGRAPHIC CONCEPTUAL MODEL AND GROUNDWATER MODEL


Project Dates: January 2015 – January 2017

Project Budget: $200,000

Client Contact Information: Bryan BondyFormer Groundwater Manager at Calleguas [email protected]


Eros Bilyeu, prior to joining Langan, worked on a project team that was contracted to provide hydrogeological and project management services for the Eastern Municipal Water District within the San Jacinto Basin including:

• Hydrogeological Studies, Groundwater Treatment Regulatory Compliance, Groundwater Management:

• Designing and installing wells and testing to preserve EMWD’s groundwater production capacity within the San Jacinto Basin and developing residential community;

• Design and install additional monitoring wells to the groundwater monitoring network to provide water quality data between existing treatment facilities and supply wells;

• Drilling, sampling, construction, development, and testing of a twenty inch diameter production well using High-Strength Alloy (HSLA) steel casing and louvered

well screen to a depth of approximately 1,500 feet;• Four inch monitoring well installed to a depth of

200 feet to provide additional data between existing recharge facilities; and

• Evaluated feasibility of geothermal application in the vicinity of major faults collecting data while drilling supply well borehole.


Project Dates: February 2017 – August 2017

Project Budget: $1,000,000

Client Contact Information: John Daverin, Senior Engineering Geologist Eastern Municipal Water District951.928.3777 [email protected]

EASTERN MUNICIPAL WATER DISTRICT – HYDROGEOLOGICAL SERVICES, SUPPLY WELL DESIGN, AND TESTING

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3Proposed Staffing and Project Organization


Langan will process all requests for services through our Project Manager, Eros Bilyeu, from our Irvine office. He will coordinate work assignments with the Langan team and confer with the City’s project manager. Eros’s extensive local knowledge will facilitate the rapid exchange of information. Because of our experience with similar contracts, we can immediately coordinate the services needed for the task.

Langan employs about 285 licensed engineers, geologists, and hydrogeologists.

LANGAN PROJECT TEAMThe City lies within a critical component of the Upper Santa Ana Valley Basin accounting for the City’s local water supply facing significant challenges to sustainability as a result of population growth, increased demand, climate changes, and supply uncertainty from federal and state water projects. The Langan project team will leverage their experience and knowledge of the Upper Santa Ana Valley Basin, its sub-basins, and surrounding sub-basins to provide the City solid and defensible water management programs, and hydrogeological and engineering services. Langan is an expert in the hydrogeology of the basins and adjacent basins. We are knowledgeable of previous studies as a result of project team experience in supporting other adjacent basins in the development of investigations, technologies, and methods that the City and their consultants’ currently implement. The Langan project team has been involved with hydrogeological investigations, conceptual and groundwater modeling, and the design and implementation of aquifer storage recovery wells in adjacent basins.

EROS BILYEU, PG, CHG, PROJECT GEOLOGIST

ROLE: PROJECT MANAGER, PROJECT HYDROGEOLOGIST

Mr. Bilyeu is a Project Manager and Hydrogeologist at Langan’s Irvine Office and will be the primary point of contact. He has 10 years of experience conducting hydrogeological investigations and water resources studies. Mr. Bilyeu has experience working with high priority basins to implement and/or evaluate ASR programs, design and implement supply well replacement or rehabilitation, design conceptual models to implement into numerical models, and his extensive experience speaking and presenting to agencies and basin stakeholders will result in a sound groundwater sustainability plan for the basin. He will leverage his previous experience to greatly advance the understanding of the hydrogeology, groundwater conditions, and the potential in the Basin, so that stakeholders will have confidence in future analyses.

Mr. Bilyeu has been integral in the design, construction, and testing of replacement of supply wells for Eastern Metropolitan Water District and the San Jacinto Basin, completed evaluations for ASR well fields and hydrostratigraphic conceptual model consisting of detailed correlation of oil and water logs for Calleguas Metropolitan Water District, managed stakeholder engagements with Fox Canyon Groundwater Management Agency, United Water Conservation District and others, and assisted with updating the groundwater model for use of ASR within the Fox Canyon and Grimes Canyon aquifers. Mr. Bilyeu was formerly a Hydrogeologist at CH2M Hill in the Thousand Oaks, CA office working with groundwater resources experts John Cherry from the University of Guelph and Terry Foreman of CH2M Hill developing expertise within the local basins in Ventura County and the Cadiz Water Project, and further developing and implementing methods of characterizing diffused fractured bedrock networks within turbidite units at Santa Susana Field Laboratory. Mr. Bilyeu formerly specialized in characterizing fractured karst bedrock networks in the southeastern United States supporting hydrogeological characterization for NASA Marshall Space Flight Center in Huntsville, AL. Mr. Bilyeu will leverage his experience within the basins and expertise to deliver a defensible conceptual model on which the stakeholders can rely.

Proposed Staffing Plan


VARINDER OBEROI, PE, SENIOR HYDROLOGIST

ROLE: PROJECT HYDROLOGIST

Mr. Oberoi offers the City nearly two decades of groundwater modeling and management expertise and has performed several of the tasks related to Category 1 and 2 of the RFP including: –

a) Development of local and regional groundwater models using several modeling platforms, including GMSTM;

b) Evaluation and modification of regional groundwater models to local groundwater models using GMSTM;

c) Developing and analyzing safe yield and sustainable yield assessments for groundwater basins; d) Evaluation of locations / Siting for production wells;

e) Design of production supply wells;

f) Evaluation of groundwater management actions like optimization of well fields and evaluation of ASRs;

g) Evaluation of the impact of climate change like droughts on groundwater resources;

h) Identification of undesirables and minimum thresholds for sustainability indicators like groundwater levels and water quality, aquifer storage, surface water / groundwater interactions for use in SGMA; and,

i) Review and development of Water Budgets.

Mr. Oberoi is the Program Manager for the City of Lodi in the high priority Eastern San Joaquin Groundwater Basin and has developed groundwater models using GMSTM in the Orange County Coastal Plain Basin, San Fernando Valley Basin, San Gabriel Valley Basin, and several of the Los Angeles Basins. Mr. Oberoi has also developed groundwater models for private utilities, like Cal Water, to optimize their groundwater supply well fields and evaluate the siting of new production wells. Additionally, Mr. Oberoi has also developed groundwater flow models to perform quantitative analysis for LADWP (Sylmar Basin) and Inyo County (Owens Valley Basin), and to evaluate the impacts of management actions like well optimization, dewatering, recharge, and groundwater pumping on sensitive receptors like wetlands. Currently, Mr. Oberoi is assisting the City of Lodi (Lodi) GSA in complying with the requirements of SGMA, including providing data to the Eastern San Joaquin Groundwater Authority (Authority) for the Eastern San Joaquin Water Resources Model, reviewing the Model to see that it incorporates all the interests of their GSAs, and developing a Water Budget for the City GSA.

RORY JOHNSTON, PE, BCEE, PRINCIPAL/VICE PRESIDENT

ROLE: PRINCIPAL-IN-CHARGE

Mr. Johnston has over 30 years of groundwater experience in Southern California. He was formerly a partner at Geocon Environmental Consultants, Inc. and Dames & Moore/URS Southern California, and has worked on groundwater quality and supply projects across the United States and internationally. He is a registered Civil and Geotechnical Engineer in California, a Diplomat in the American Academy of Environmental Engineers, and is a Fellow in the American Society of Civil Engineers. Mr. Johnston is the Principal in Charge of the groundwater and environmental investigations at the Riverside Cement Plant in the City of Jurupa Valley, CA. The project involved extensive hydrogeologic research, evaluation of groundwater quality,



estimates of groundwater flow, modeling of the existing inundated mines on the property, interaction with the SARWQCB and the DTSC, and the installation of monitoring wells and groundwater monitoring. Mr. Johnston also led a detailed groundwater evaluation of the groundwater in the vicinity of the former Rohr facility. Rory has acted as Principal in Charge of numerous modeling efforts, including a very large MODFLOW modeling project in West Texas that combined five different models to simulate withdrawals and inflow in the Permian Basin, with significant influence of irrigation withdrawals and withdrawals for oil and gas production. The calibration of the model also included surface water inflows, and potential impacts from shallow injection wells.

Mr. Johnston has a long history of evaluating groundwater supply and monitoring in Southern California. He has acted as Principal in Charge of a number of supply projects, including Mt. Woodson, Steele Canyon Golf Course, and multiple residential developments. He has also lead groundwater projects at Camp Pendleton, and numerous other military facilities in Southern California. In addition, he has lead water sustainability projects, including a number of projects for Saudi Aramco in the Kingdom of Saudi Arabia, where the supply, storage, groundwater yield and conservations methods were all integrated into a master plan for a number of planned residential neighborhoods. Mr. Johnston’s role as Principal in Charge is to provide resource support, quality assurance/quality control, and technical support as required to facilitate project completion within milestones and budgets.

PHILIP TRINGALE, PE, PHD, SENIOR CONSULTANT/DIRECTOR

ROLE: SENIOR TECHNICAL ADVISOR

Dr. Tringale, PE, has 40 years of experience in the industry. Dr. Tringale directed numerous site assessments and remediation programs involving soil and groundwater contaminated primarily by organic solvents, metals, and petroleum products. He has particular expertise in site characterization and in the use of in-situ testing to evaluate soil properties. Dr. Tringale has provided final design for remedial actions that involve excavation, containment, bioremediation, vacuum extraction, monitoring, and groundwater treatment. Dr. Tringale has also provided expert testimony in support of counsel for cases involving National Contingency Plan compliance, identification of contaminant sources, magnitude and extent of contamination, remedial cost estimates, and allocation of cost and responsibility.

DORINDA SHIPMAN, PG, CHG, PRINCIPAL/VICE PRESIDENT

ROLE: SENIOR TECHNICAL ADVISOR / QA/QC

Ms. Shipman, PG, CHG, is a principal at Langan and manages the Environmental Engineering Department in California. Ms. Shipman has 29 years of experience as a senior manager and hydrogeologist. Her expertise encompasses groundwater investigation and remediation, conceptual site and basin model development, groundwater flow and fate-and transport modeling for water supply, health risk assessments, and well field development and protection, remedial design, and system optimization. She has successfully managed and directed many public agency projects and provides community, regulatory, and public agency meeting support for informational presentation and negotiation. She works successfully with EPA Region IX, Cal- EPA DTSC, RWQCB, and numerous other regulators. Her role in this project includes providing overall quality control and acting as a technical advisor to the project team.



Langan will provide the City with the staff shown on the organizational chart with the specialties indicated to water management programs and engineering services. Our large staff of registered engineers, geologists, and hydrogeologist with diverse technical expertise enables us to optimally complete numerous concurrent projects and respond to client requests on short notice.

Organization Chart

Rory Johnston, PE, BCEEPrincipal/Vice President

Principal-in-Charge

Eros Bilyeu, PG, CHG Project Geologist

Project Manager

Dorinda Shipman, PG, CHG Principal/Vice President

Senior Technical Advisor

Phil Tringale, PE, PhD Senior Consultant/Director

Senior Technical Advisor

Groundwater Modeling (using GMSTM)

Hydrogeologic Services Project Management Hydrologic Services GIS & Database Managment

• Aquifer Modeling

Staff: Varinder OberoiMaria Lorca

• Groundwater Management

• Groundwater Monitoring Services

• Recharge• Groundwater Treatment

Regulatory Compliance

Staff:Varinder OberoEros Bilyeu Tyler HougtonRachel ProhoroffKatleen LoMegan Abutin

• Coordination with District

• SGMA’• Reports• Meetings with

Regulatory Agencices• Coordination with

outside agencies

Staff:Varinder OberoEros Bilyeu

• Surface Water Management

• Storm Drain Diversions

Staff:Varinder OberoEros Bilyeu Tyler HougtonRachel ProhoroffKatleen LoMegan Abutin

Staff:Devesh SinhaBrock Saylor

Robert (Rory) S. Johnston, PE, BCEE Principal / Vice President Groundwater & Geoenvironmental Engineering

33 years in the industry

Mr. Johnston has over 30 years of experience in groundwater evaluations, monitoring, and geoenvironmental projects. Mr. Johnston has also performed numerous studies relative to subsidence from various causes, including groundwater withdrawals, and has conducted hundreds of groundwater investigations in Southern California.

Mr. Johnston has also led numerous groundwater modeling projects, and has testified as an expert in a number of trials and depositions regarding groundwater quality and impacts. He has also acted as Principal in Charge for groundwater supply and permit projects in Southern California, both for new developments and commercial/industrial operations incuding golf courses and recreational developments. He has also conducted numerous studies for industrial water supply, reuse and minimization, and is experienced in various water treatment approaches and designs.

Mr. Johnston has also led multiple projects for the development intregrated water management plans. One of the largest was the investigation, monitoring and planning for a number of existing and planned neighborhoods in Saudi Arabia, managed by Saudi Aramco. Solutions included reuse of shallow groundwater, treatment of shallow groundwater, industrial reuse (refinery zero discharge), ASR, reduction of distribution losses, irrigation/agricultural evaluations, demand economics, and the developmentof conservation programs.

Selected Projects

Viridian Partners/Martin Marietta: Riverside Cement Groundwater Evaluation, Riverside, CA Chula Vista Bayfront Partners: Groundwater Supply Evaluation, Chula Vista, CA Confidential Client: MODFLO Modeling-Permian Asset Water Evaluation, Pecos, TX Steele Canyon Partners: Steele Canyon Golf Course Water Supply, San Diego County, CA Padre Dam Water District: Groundwater Supply Impact Evaluation, Santee, CA SWEPI: Former Aera Hercules Gas Plant, Groundwater Supply Evaluation, Goleta, CA Camp Pendleton Marine Corp Air Station: Groundwater Supply Investigation/ Remediation, Camp Pendleton, CA ALCOA: Trinidad Smelter Groundwater Supply Evaluation: Cap-de-Ville, Trinidad H.G. Fenton Materials: Eagle Crest Golf Course Groundwater Supply Evaluation, Escondido, CA

Education

M. Sc., Civil EngineeringUniversity of California

B.Sc., Civil EngineeringRutgers University

B.A., EnglishRutgers University

Professional Registration

Professional Engineer (PE) in CA, NJ, NY, PA, KS, CO, TX, AZ, ND and WV

Registered Geotechnical Engineer, CA

Affiliations

American Society of Civil Engineers, Fellow

Association of Firms Practicing in Geosciences, Past President

Diplomat, American Academy of Environmental Engineers

Chi Epsilon

29 years in the industry Dorinda has 29 years of experience as a senior manager and hydrogeologist. Her expertise encompasses groundwater investigation and cleanup, conceptual site and basin model development, groundwater-flow and fate and transport modeling for water supply, health risk assessments, and well field development and protection, remedial design, and system optimization. She has successfully managed and directed many public agency projects and provides community, regulatory, and stakeholder meeting support for informational presentation and negotiation. She works successfully with EPA Region IX, Cal-EPA DTSC, RWQCB, and numerous other regulators. Her role in the project includes providing prinicpal project management, overall quality control, and stakeholder meeting support.

Selected Projects City of Lodi Supply Well Cleanup, Protection and Optimization

• Assisted the City on allocating responsibility to multiple PRPs for VOC contamination of the local groundwater basin beneath the City.

• Client interaction with regulators (Water Board, DTSC), numerous PRPs, consultants, and attorneys.

• Formal and informal presentations to the City and Public • Groundwater Modeling • Groundwater & Plume Management, including well optimization • Surface water / Groundwater Interaction (Mokelumne River)

Groundwater Modeling – Downtown San Francisco Basin, SFMTA, CA • Project director / Lead reviewer for developing a 3-D groundwater

flow model simulating Downtown San Francisco Basin • Simulate the impact of dewatering systems and major

subterranean constructions on groundwater flow • Developing a HCM & Stratigraphic Model

Texas Instruments GWET System Optimization, Santa Clara, CA

• Project Principal and hydrogeologist for the Superfund Site • The GWET is operating to remove VOCs • Langan successfully implemented a 50% reduction in the number

of active groundwater extraction wells • Groundwater modeling to evaluate treatment options • Annual groundwater monitoring events

Groundwater Monitoring Program, The Presidio Trust

• Since 2000, Langan has provided groundwater monitoring services • Manage quarterly monitoring program for over 200 wells • Langan works with the Presidio Trust and National Park Service to

reduce program costs by amending the sampling program (from $500,000 to $30,000 per quarter).

Dorinda Shipman, PG, CHG Principal/Vice President

Education M.S., Geology (Hydrogeology Option) Wright State University B.S., Geology (cum laude) Ohio University Professional Registration Professional Geologist (PG) in CA Certified Hydrogeologist in CA Certified Environmental Manager in NV Environmental Sustainability Professional Affiliations National Groundwater Association Groundwater Resources Association of California

Presentations 2016 “The Remediation, Redevelopment, and Revitalization of Treasure Island,” Remediation of Chlorinated and Recalcitrant Compounds Conference (with Chris Glenn) 2011 “Municipal Risk Management of Early Transfer Parcels for Redevelopment and Reuse at Hunters Point Shipyard” Battelle International Symposium on Bioremediation and Sustainable Environmental Technologies (with Amy Brownell and Sigrida Reinis) 2008 “A Biobarrier Case Study Using Non-Emulsified Vegetable Oil”, 6th Annual International Conference on Oxidation & Reduction Technology for In-Situ Treatment of Soil and Groundwater (with Philip Smith, Chris Glenn and Richard Banks).

40 years in the industry Dr. Tringale has directed numerous site assessments and remediation programs involving soil and groundwater contaminated primarily by organic solvents, metals, and petroleum products. He has particular expertise in site characterization and in the use of in-situ testing to evaluate soil properties. Dr. Tringale has provided final design for remedial actions that involve excavation, containment, bioremediation, vacuum extraction, monitoring, and groundwater treatment. Dr. Tringale has also provided expert testimony in support of counsel for cases involving National Contingency Plan compliance, identification of contaminant sources, magnitude and extent of contamination, remedial cost estimates, and allocation of cost and responsibility. Examples of his recent litigation cases are:

• Expert services associated with assessing drinking water aquifer contamination sources and potentially responsible parties at facilities throughout a major water basin

• Evaluation of impact from ruptured pipe discharging millions of gallons of liquid on major surface water feature

• Assessment of impact from industrial facilities in a business park to groundwater

• Forensic evaluation of industrial facility impact to drinking water aquifer supply in major metropolitan areas

• Forensic evaluation of impact from lead and arsenic discharges throughout extended facilities operations to the environment in a sensitive urban area.

Examples of his projects are presented below:

Industrial Groundwater Remediation

Directed the investigation and remediation of a 5-mile-long plume of contaminated groundwater emanating from beneath a manufacturing facility in Colorado. Perchloroethene-contaminated groundwater affected a major water supply aquifer, and several supply wells were forced out of service. Services included the assessment of subsurface conditions, regulatory agency interaction and reporting, detailed assessments of remedial alternatives, design of remedial systems, preparation of plans and specifications, contractor selection, and technical support of counsel.

Philip T. Tringale, PhD, PE Senior Consultant Environmental Consulting Expert Witness and Litigation Support

Education Ph.D., Civil Engineering, University of California, Berkeley M.Eng., Civil Engineering, University of California, Berkeley M.S., Civil Engineering (Engineering Geology), Drexel University, Philadelphia B.S., Civil Engineering, Northeastern University, Boston Professional Registration Professional Engineer (PE) in CA, NY Affiliations/Honors/Patent American Society of Civil Engineers

National Ground Water Association

International Society for Soil Mechanics and Foundation Engineering

American College of Forensic Examiners (Diplomat/Fellow)

Chi Epsilon, National Civil Engineering Honor Society

Patent: Acoustic Penetrometer for Subsurface Soil Characterization

Philip T. Tringale, PhD, PE

Technical Excellence • Practical Experience • Client Responsiveness

Solvent Investigation and Remediation

Directed the investigation and remediation of soil and groundwater contaminated with trichloroethene (TCE) and perchloroethene (PCE) at a metal-parts fabrication plant in San Francisco, Calif. with regulatory oversight by Department of Toxic Substances Control and Regional Water Quality Control Board, project activities also included development of a public participation plan, risk assessment, and supporting documents consistent with the National Contingency Plan, and expert witness services.

Landfill Investigation and Closure

Directed the evaluation of the migration of chlorinated solvents and other constituents at the GBF/Pittsburg Landfill in Pittsburg, Calif. Provided technical support to counsel including designing and implementing field investigations; compiling and interpreting hydrogeologic, chemical disposal, and land use data; and developing a cost allocation model. Applied for a containment zone designation. Directed evaluation of a range of remediation alternatives using cost decision analysis and probabilistic cost estimation. Directed closure and post closure engineering studies including regulatory agency interaction. Participated in mediation proceedings.

Marina Bay

Provided technical support of litigation for the investigation and cleanup of a 200-acre site near the Richmond waterfront in California. The area was contaminated with petroleum hydrocarbons, metals, and other constituents. His expert testimony on behalf of the City of Richmond Redevelopment Agency focused on response action compliance with the National Contingency Plan.

Petroleum Remediation at an Industrial Facility

Directed a site investigation and remediation program at an industrial facility in Burlingame, Calif. Directed technical activities that ranged from a study of site history to the remediation of soil affected by petroleum hydrocarbons. The exploratory program involved soil trenching and onsite quantification of hydrocarbon concentrations in soil. Remediation consisted of soil excavation, controlled backfilling, design and implementation of a treatability study, and the development and implementation of an onsite bioremediation program.

Eros Bilyeu, PG, CHG

Project Geologist Environmental Engineering

10 years in the Industry

Mr. Bilyeu is a project geologist at Langan. He supports the groundwater resources and environmental engineering project management team within the Irvine office. Mr. Bilyeu’s technical expertise includes groundwater resources plans and investigations, high resolution hydrogeological characterization, aquifer storage recovery (ASR), remedial investigations (RI), feasibility studies, human health risk assessments, ecological risk assessments, seismic surveys, resource management, water supply investigations, groundwater/geothermal exploration, and numerical and conceptual modeling. He has worked with state and federal agencies in relation to the Sustainable Groundwater Management Act (SGMA), Comprehensive Environmental, Response, Compensation and Liability Act (CERCLA), and the California Environmental Quality Act (CEQA). Mr. Bilyeu has experience working with municipalities, state, federal, international and exclusive agencies and entities, military bases, attorneys, and private sector clients.

Selected Projects

Calleguas Municipal Water District, Thousand Oaks, CA – Senior technical manager for the Las Posas Basins (LPB) Conceptual Model including Terry Foreman and Mark Wuttig. Assisted with proposals, completed stakeholder engagement, conducted stakeholder, interagency, and interbasin meetings and presentations between the Fox Canyon Groundwater Management Agency and the United Water Conservation District and adjacent basins, and preparing internal/external notices and status communications. Expanded on ASR well field operations from our former projects. Updated the basin hydrostratigraphy, structural controls on groundwater flow, initial groundwater budget for the numerical flow model, and defining boundary condition within the LPB within Ventura County, CA. Interpreted, mapped, and documented 66 square miles and 3,500 feet of subsurface for implementation into surface water/groundwater flow model, which was used in the current Groundwater Sustainability Plan for Fox Canyon Groundwater Management Agency.*

Eastern Municipal Water District, Perris, CA – Provided project management and hydrogeological services including well design and testing, geophysical and pilot hole testing, aquifer zone testing, and aquifer testing to preserve EMWD’s groundwater production capacity within the San Jacinto Basin. Designed and installed additional monitoring wells to the groundwater monitoring network to provide data between existing groundwater recharge facilities and planned community development. Additionally, completed a geothermal feasibility study component along the Claremont Fault and the San Jacinto River.*

Education

B.S., Geology, University of South Alabama

Certifications/Training

Professional Geologist (CA) #9351 Certified Hydrogeologist (CA)

ESRI ArcGIS Suite/Extensions 9.1–10.4 Rockware Software Suite/Rockworks 16–17

IHS Petra

ARANZ Leapfrog

Golden Software Suite (Surfer 13, Didger 5, Strater 4, Voxler 4, and Grapher 11)

Bentley gINT 8

Geosoft Oasis Montaj 8.4

Schlumberger Aquachem

Schlumberger Petrel 2014

Schlumberger Aquifer Test Pro 2016

AutoCAD 2015

Lizard GeoExpress 8

Bentley gINT 8

Ellis Paleoscan 2015

Aquaveo SMS 12

MODFLOW

Blue Marble Global Mapper 17

WellCAD 4.3

Various GPS Softwares (trimble, garmin, etc.)

VBA, Excel, and Python Languages

*Mr. Bilyeu completed this work prior to joining Langan.

Eros Bilyeu, PG, CHG

Boeing Santa Susana Field Laboratory, Canoga Park, CA – Managed technical field operations and staff, contracts, regulator, and site involvement for multiple project task orders under a $17 million investigation within a 2,850-acre test facility joint property by Rocketdyne/Boeing, National Aeronautical and Space Administration (NASA), and Department of Defense (DOD). Performed high resolution hydrogeological characterization of diffused fractured bedrock networks with John A. Cherry and the University of Guelph 360 team. Completed pilot studies for current and new methods in mapping diffused fractured bedrock networks and performed pilot tests for various groundwater remedial methods. Completed various downhole geophysical investigations for fault/deformations studies and various multi-level well type installations. Performed modeling of differential temperatures and pressures of fractured bedrock networks, and subsequent database design and implementation.*

NASA Santa Susana Field Laboratory, Canoga Park, CA – Supervised staff, managed field operations, prepared subcontracts and scopes of work, and managed coordination with regulatory agencies for multiple project task orders under a $11 million groundwater investigation within the 2,850-acre test facility. Completed bedrock vapor extraction pilot studies within diffused fractured bedrock network and high resolution mapping of faulting and deformation. Updated and published the surface geological maps within the boundaries of the site. Modeled groundwater and vapor flow paths in diffused fractured bedrock networks.*

Kinder Morgan Colton Terminal, Rialto, CA – Supervised project delivery operations for hydrogeological characterization of confining units/aquitards and aquifers, and delineating LNAPL across perched, unconfined, and confined/semi-confined alluvial aquifers. Developed qualitative field methods of mapping lithology and porosity as a function of quantitative USCS evidence in comparison to resistivity logging using various drilling methods.*

Tinker Air Force Base, Oklahoma City, OK – Led project proposal in designing, planning, and executing a digital 3-dimensional hydrogeological conceptual model to include multiple aquifers, saturated zones, aquifer test data, geophysical data, and groundwater data to objectively use as a basis for quantitative modeling.*

NAVFAC Navy Base San Diego, San Diego, CA – Supervised project field and technical quality guidance for a RI/FS under CERCLA procedures to complete hydrogeological characterization, delineation, and fate and transport of inorganic and organic contaminants. Project included high resolution characterization in saline tidal environments using aquifer testing, groundwater quality studies, and pressure transducer studies.*

City of Perryton Well Site 2, Perryton, TX – Supervised technical operations characterizing 600 feet of aquifer units within the Ogallala aquifer to delineate vertical and lateral migration routes of potential contaminants to ultimately determine effectiveness of well abandonment procedures and the accuracy of the conceptual model, and to further understand connectivity of aquifers and effect on the water supply.*

NAVFAC Morris Dam, Azusa, CA – Managed project delivery and technical guidance in coordination with multiple state and federal agencies including US Forest Service (property owner), DTSC, DWR, LA RWQCB, California Department of Fish and Wildlife, Metropolitan Water District of Southern California (property owner), and Los Angeles County Department of Public Works for groundwater investigations, long term groundwater monitoring (LTM) for non-time critical removal action (NTRCA), and a feasibility study for a land transfer from a municipal water district to the County of Los Angeles at a former Navy torpedo testing facility.*

NASA Marshall Space Flight Center, Huntsville, AL – Supervised field and operations on a multi-million-dollar RCRA RI including surficial media and groundwater investigations. Conducted high-resolution hydrogeological investigations including karst bedrock aerial, surface and subsurface geophysical investigations, aquifer evaluations and pumping tests, groundwater analytical and quality characterization, tracer and spring discharge studies, seismic and microgravity studies, and MNA design and evaluation. Conducted treatability and remedial pilot studies including clay matrix fracturing and injections of zero valent iron, hydrogen peroxide, and potassium permanganate for BTEX reduction, biological injections (DNA/RNA monitoring), and remedial excavation.*

Publications E. Bilyeu, K. Murdock, M. Wuttig. Development of Conceptual Site Models in Complex Groundwater Basins using Rockworks and GIS Platforms. CH2M Hill Hydrogeological Community of Practice, 19 May 2016, Los Angeles, CA, Online Technical Presentation.

E.Bilyeu. Geology, Hydrogeology, and Hydrostratigraphy of the Las Posas Valley Basin in Ventura County, CA. FCGWMA, 11 February 2016, Oxnard,CA, Stakeholders Meeting.

D. Allison, E. Bilyeu, S. McGilberry. Geology of Ozan, Alabama, 7.5’ USGS Quadrangle. 1:24,000. USGS Grant #G09AC00129, 2010

Varinder S. Oberoi, PE

Senior Hydrologist / Groundwater Modeler

30 years in the industry Mr. Oberoi has over 30 years of combined professional experience in the water supply and resource management sector. He has performed basin assessments, water quality studies, aquifer characterization and sustainability studies. Mr. Oberoi has modified and developed both regional and local 3D groundwater flow and contaminant transport numerical models that have been used as critical tools in evaluating groundwater basins and estimating water budgets, optimizing supply well pumping, plume management, simulating surface water-groundwater interaction, evaluating saline intrusion, defining/siting/managing ASRs, and wetland mitigation

As a Project Manager, Mr. Oberoi has managed large projects and teams that cover the breadth of the water resource sector. Responsibilities have included client and stakeholder interaction, project management, budget estimation, regulatory negotiation and permitting, and report presentation.

Mr. Oberoi has experience working on projects in California, including the Central Valley, San Francisco Bay Area, and Southern California. Current clients include private utilities (Cal Water, LADWP), local cities (City of Lodi), irrigation districts (Woodbridge Irrigation District WID), and private developers. He has been the program manager to the City of Lodi for their groundwater management program since 2007. Additionally, Mr. Oberoi has worked on several basins in Southern California including San Fernando Basin, San Gabriel Basin, Orange County Coastal Plain Basin, several Los Angeles area basins, and Owens Valley Groundwater Basin.

Selected Projects Groundwater Management, Groundwater Modeling, Hydrogeologic Services, Water Budget Analysis, Well Field Optimization, Evaluation of Drought Impacts – City of Lodi, Lodi As the Program Manager for the City of Lodi, I have assisted the City in developing their long term groundwater management strategies. I developed a multi-layer City-wide transient model using the GMSTM modeling platform that incorporates the surface water / groundwater interaction of Mokelumne River, extraction from over 1,000 domestic and agricultural wells surrounding the City, extraction from City supply wells, and recharge from irrigation. The model has been applied to optimize pumping for the City's well field by limiting the overdraft of the groundwater basin underlying the City (groundwater management), and mitigating the migration of contaminant plumes (plume management). The model has also been applied to determine the locations for deep multi-nested monitoring wells, evaluate the impacts of drought conditions (management controls), and develop the Water Budget for the City GSA (SGMA). In the future, the model will be used to assist in the management of the City’s groundwater supply system including new supply well locations and design, and siting and design of ASRs, and aquifer storage and recovery. The model has been used by the Water Board as a training tool for its staff to demonstrate the effective application of a groundwater flow and contaminant transport model for plume management.

Education

M.S., Civil/Environmental Engineering (Minor – Hydrogeology) Syracuse University

B-Tech., Civil Engineering IIT-Delhi, India

Professional Registration Professional Engineer (PE) in CA

Modeling Platforms

Groundwater Modeling System (GMS), Groundwater Vistas (GV), Visual MODFLOW (VM), Surface-water Modeling System (SMS), Watershed Modeling System (WMS)

Numerical Groundwater Flow/Fate and Transport Models MODFLOW2000, MODFLOW-NWT, MODFLOW- SURFACT, FEFLOW, FEMWATER, FLONET/TRANS, MODPATH, MT3DMS, RT3Dv2.5, SUTRA, PATH3D, SOLUTRANS, BIOPLUME III

Analytical Groundwater Flow, Fate/Transport and Capture Zone Models

WinFLOW, QUICKFLOW, PRINCE, ODAST, TDAST, PLUME2D, PLUME3D, AT123D, BIOSCREEN, BIOCHLOR, Well Head Protection (WHPA), CAPZONE, GWPATH

Vadose Zone/Leaching and Aquifer Characteristics/Water Quality Models

HELP, SESOIL (using RISKPRO), VLEACH, AQTESOLV, AQUACHEM

Varinder S. Oberoi, PE

Production Well Siting – Cal Water South San Francisco District, CA Evaluated alternative locations for production wells for the Cal Water SSFD. Tasks included data compilation and evaluation, development of a conceptual hydrogeologic model, evaluation of potential source areas and estimated locations of chemicals of potential concern (COPCs), including 1,2,3-TCP, PCE, and nitrates, estimation of capture zones, estimation of the potential migration of COPCs, and evaluation of alternate locations so as satisfy the California DDW criteria for production wells.

Quantitative Analysis of the Sylmar Basin – LADWP, CA Currently developing a stratigraphic and a numerical groundwater flow and contaminant transport model for the Sylmar Basin. The model will be used to understand the groundwater flow within the Basin, and also to develop long term groundwater management strategies for the Basin.

Quantitative Evaluation of Dewatering Alternatives – Major Developer, Fillmore, CA As part of the EIR process, evaluated dewatering alternatives for a proposed housing development in the Santa Clara River Basin flood plain in Southern California by developing a multi-layered numerical flow model. The model was developed to design and evaluate the effectiveness of dewatering alternatives and mitigation control measures, such as a levee and sub-drain system, during a simulated design flood. The results of the modeling were used by the Client in permitting the proposed development with local agencies.

Optimization of the Cal Water Visalia Operating District (VOD) Well Field – Cal Water, Visalia Mr. Oberoi developed a 7-layer transient groundwater flow and contaminant transport model by modifying the regional Kaweah Delta Water Conservation District (KDWCD) and the local City of Visalia (COV) groundwater flow models. The model simulated the impacts of pumping from more than 1000 agriculture wells, recharge due to leakage from irrigation canals, precipitation, recharge from irrigation based on land usage and ET maps, and pumping from 90 Cal Water supply wells. The model was applied to assist Cal Water in defining the groundwater regime beneath the City of Visalia and optimize their Pumping Priority Schedule (PPS) such that it minimizes the transport of PCE to additional non-impacted supply wells. Additionally, the model has also been applied to study the impacts of the California drought on the VOD supply wells.

Quantitative Evaluation of Mining Operations to the Owens River Riparian Corridor and Fish Slough Wetlands – Desert Aggregates and ICPD, Inyo, CA Mr. Oberoi developed a multi-layered groundwater flow model to evaluate the potential hydrologic impacts of the proposed expansion of gravel mining operations on sensitive ecologic receptors along the Owens River riparian corridor and the Fish Slough wetlands in the Owens Valley Groundwater Basin. Processes such as ET, surface water-groundwater interaction, recharge from irrigation and watering of livestock, runoff from bedrock outcrops, mountain-front recharge, and recharge from canals, ditches, and other hydraulic features were also simulated. The model was simulated under differing climatic conditions such as drought and wet years. Results showed cumulative impacts could be mitigated by the proper placement of recharge basins.

Evaluation of Groundwater Pumping on Local Groundwater Sustainability – Inyo County, CA Performed a groundwater supply evaluation for a proposed development and evaluated its potential impacts on the quality of the local groundwater basin. The tasks including testing production wells in a hard rock environment, evaluating the performance of existing production wells using long-term aquifer tests, developing a groundwater flow model to evaluate the cumulative impact of current and proposed pumping on the sustainability of the local groundwater supplies, and developing a groundwater monitoring program to evaluate future impacts to the groundwater basin. The groundwater supply evaluation study was successfully used to obtain a Negative Declaration from the ICPD.

Groundwater Recharge / Fate & Transport of VOCs – OCWD, Southern California Developed a 3D model that was used to simulate surface water recharge through infiltration basins, rivers and precipitation to a multi-layer aquifer system, and evaluate the migration of VOCs in a 40 square mile area of the Orange County Groundwater Basin. Fluctuating groundwater recharge from surface water features, Santa Ana River, and recharge basins, precipitation recharge and evapotranspiration rates from surrounding areas were calculated and incorporated into the model. The model was successfully applied to assess the effectiveness of groundwater remedial options and allocate potential costs to PRPs.


12 years in the industry Mr. Sinha is an EHS Business Transformation Consultant with focus on Information Management based process optimization. Mr. Sinha has a strong track record of leading major process improvement, organizational development, and strategic services to leading private and public sector clients. He has extensive experience in team leadership, business process development, and optimization. Mr. Sinha specializes in helping organizations facing rapid growth or market change strategically understand the business imperatives and implement effective processes for continued growth. Selected Projects • Southern California Edison: Enterprise System Implementation,

Rosemead CA • Confidential Global Consumer-Pharmaceutical Client: Global Product

Stewardship Master Plan • Freeport McMorran: Remediation Program Management System,

Phoenix, AZ • Eaton Corporation: EMIS Implementation, Cleveland, OH • North Western Energy: Enablon System Implementation, Butte, MT • NYCDEP: Contaminant Warning System Implementation, NY • City of Phoenix: Environmental Permit Compliance System, Phoenix, AZ

Selected Publications, Reports, and Presentations Bacon, G.H., Roberts, T, Sinha D., “”, Southern California Edison’s Implementation of SAP EHS Management is Complete … So What?”, SAP EHS Conference Akbas, E.R., Azagra, E., Sinha, D., "Dual Benefits of Early Warning Systems Dashboards," Proceedings, Distribution Systems Symposium and Exposition of the Water Security Congress (WSC) Yang, L., Gohad, T., Ghosh, P., Sinha, D., Sen, A., Richa, A., "Resource Mapping and Scheduling for Heterogeneous Network Processor Systems," Proceedings of the 2005 Symposium on Architecture for Networking and Communications Systems. The ACM Digital Library ISBN:1-59593-082-5

Devesh Sinha, PMP, SCJP, Lean Sensei Associate EHS Management and Compliance

Education M.Sc., Electrical Engineering Arizona State University B.Sc., Electrical Engineering Birla Institute of Technology Professional Registration Project Management Professional Sun Certified Java Programmer Lean Sensei Affiliations Institute of Electrical and Electronics Engineers Project Management Institute Awards Frontline Leader Award Verdantix EHS Innovation Award

7 years in the industry Mr. Saylor has a bachelor’s degree in Environmental Planning with a focus in GIS and has extensive experience with data management of enterprise GIS, GPS data collection and processing, data management, local government GIS, ArcGIS online and ArcGIS Server. In addition, he has conducted onsite trainings with various local government organizations covering cartographic mapping, data management, field applications, and Quality Assurance/Quality Control (QA/QC) procedures. Mr. Saylor has effectively managed enterprise GIS databases and applications to facilitate large-scale projects by analyzing all input data to create project-specific data models. In addition, Mr. Saylor has effecively prepared environmental impact studies, GIS based environmental risk assessments, network analysis of water/sanitary sewer networks, and view shed analysis. He has managed and performed spatial analysis using GIS for watershed, groundwater, and flood/tidal inundation modeling.

Selected Projects • Los Angeles River Storm Drain Inspections, Los Angeles, CA • Los Angeles Community College District, Los Angeles, CA • Four Seasons, Calistoga, CA • UC Merced Expansion, Merced, CA • Alameda Point, Alameda, CA • Hunters Point Redevelopment San Francisco, CA • Treasure Island, San Francisco, CA • City of Lodi Public Works, Lodi, CA • City of Modesto, Water Resources, Modesto, CA • Teichert Construction, various projects in the Sacramento Region • Sutter Hospital Neighborhood Redevelopment, Sacramento, CA • Golden State Warriors Arena, San Francisco, CA • Texas Instruments, Santa Clara & Palo Alto, CA • 1548 Maple Street, Redwood City, CA • City Place Santa Clara Landfill Post-Closure Development Santa Clara, CA • Tesoro Amorco Terminal, Martinez, CA • Project Graphite, Dublin, CA • Century Center, Modesto, CA • Cherry Valley Sports Center, Cherry Valley, CA • Roseville Senior Housing Project, Roseville, CA • Agua Mansa Commerce Park, Riverside, CA • Fair Oaks Business Park, Sunnyvale, CA • Gateway of Pacific, San Francisco, CA • Broadway Redevelopment, Oakland, CA

Brock J. Saylor GIS Supervisor Enterprise GIS, Mobile GIS Applications, Geographic Positioning Systems, Spatial Analysis, and GIS Training Applications

Education

B.A., Geography and Environmental Planning, with a focus in GIS Bloomsburg University of Pennsylvania

Affiliations Urban Land Institute (ULI) Young Professionals in Energy California Water Environment Association (CWEA) Water Environment Federation (WEF)

Software/Training Esri® ArcGIS 10.x Suite Esri® ArcGIS Pro Esri® ArcGIS Online Esri® Collector Esri® Survey123 Esri® ArcGIS Server Esri® ArcHydro Toolset Esri® ArcPAD 10.x Golden Surfer Trimble Terrasync Suite USDA i-Tree Streets Software AutoCAD Civil 3D Aquaveo’s ArcHydro

Brock J. Saylor


Los Angeles River Storm Drain Inspections, Los Angeles, CA Managed and deployed field GIS applications to support pipe inspections along the Los Angeles River, utilizing Esri® Collector and Esri® ArcGIS online solutions. Developed an ArcGIS Online Web Application for both client and Langan project teams to visualize the status of the inspections and to correct errors in real-time. Developed customized workflows and geodatabase schema to streamline field data collection, reduce error, and improve efficiency. UC Merced, Merced, CA Managed and applied field-to-office communications utilizing GIS Mobile Application, such as Esri® Collector and Esri® ArcGIS online solutions. Worked with the project team and subcontractors to ensure GIS field applications were implemented and achieved expectations. Relayed data collected in the field in real-time from Collector to a client web-viewer application that allowed both the Langan project team and the client to make adjustments and see results on the fly instantly. Worked with the project team to automate reports from ArcGIS online solutions and web viewer application outputs. South Whitehall Township, Eastern Pennsylvania Managed and integrated the use of GIS to facilitate the office of public works. Digitized water distribution and wastewater system for use in geometric networks. Deployed and trained client on mobile applications and GIS to aid in field inspections. Maintained the township’s geodatabases and implementation of GIS standards for data collection and data management using SDE geodatabases. Provided in-house training expertise for mobile GIS field applications and desktop GIS.

Selected Publications, Reports, and Presentations

Saylor, B. J., Yates, T. GIS For the Shale Gas Industry. Presented at the Pennsylvania GIS Conference 2013, Penn State, PA June 4-5, 2013. Saylor, B. J., Kerstetter, T. E., Diltz, A. “Bloomsburg University Tree Inventory.” Presented at the Pennsylvania Geographic Society Annual Meeting 2011, Indiana, PA, November 4-5, 2011. Saylor, B. J. Using GIS/GPS to conduct a tree inventory for Bloomsburg University of Pennsylvania. Presented at Bloomsburg University of Pennsylvania College of Science and Technology Research Day, Bloomsburg, PA, Dec, 2011. Prosceno, J., Saylor, B., Kachur, K., Robinson, L., Jenkins, A., Brunskill, J.C., & Mathews. C. (2011). Using GIS) technologies and i-Tree to conduct a street tree inventory for the Town of Bloomsburg, Pennsylvania. PA Borough News: The Official Magazine of the Pennsylvania State Association of Boroughs. (In Press)

1 year in the Industry

Ms. Lorca is a hydrogeologist with an advanced understanding of groundwater hydrology, and fate and transport of contaminants. Her field experience includes soil, gas, and groundwater sampling, and multilevel well installations. She has experience compiling, querying and analyzing large databases. Currently, she assists with groundwater resources investigations and environmental investigations.

Selected Projects

• Geochemistry and Water Budget of Experimental Field Barrels, Chile*

• Hydrogeological characterization of the Paipote and Copiapo river basins, Chile*

• Hydrogeology and Geochemistry of Mine Waste, Peru* • 610 - 628 Camino de Los Mares Remediation, San Clemente, CA • 1125 Coleman Ave, Soil Vapor Investigation, San Jose, CA • Alameda Point VMS Design, Alameda, CA • City Place Santa Clara Landfill, Santa Clara, CA • 505 Bayshore Blvd, Environmental Site Assessment, Redwood City,

CA

Selected Publications, Reports, and Presentations

ME Lorca, KU Mayer, D Pedretti, L Smith, RD Beckie - 2016. Spatial and Temporal Fluctuations of Pore-GasComposition in Sulfidic Mine Waste Rock. Vadose Zone Journal.

ME Lorca, KU Mayer, RD Beckie - 2015. Investigation of pore gas oxygen and internal temperature in a waste rock dump, Antamina mine, Peru. 10th International Conference on Acid Rock Drainage. Santiago, Chile.

ME Lorca, R Troncoso, C Espinoza, R Castro, Y Perez - 2009. Geochemistry of the Water of the Paipote Basin,Región de Atacama. XII Congreso Geológico Chileno. Santiago, Chile. <Article in Spanish>

R Troncoso, et al. – 2012. Hidrogeological Evaluation of the Copiapo River Basin, with Emphasis on the Quantification, Dynamic and Water Quality of the Surface and Subsurface Water Resources. Servicio Nacional de Geologia y Mineria IR-12-49, Chile. <Report in Spanish>

ME Lorca – 2011. Hydrogeology and Geochemisty of the Paipote Basin, Chile. Universidad de Chile, Master’s Thesis <Thesis in Spanish>

Maria E. Lorca Staff Geologist Environmental Engineering

Education PhD(c) Geological Sciences, Hydrogeology, University of British Columbia (in progress) M.S., Geology, Universidad de Chile B.S., Geology, Universidad de Chile

Certifications 40 hour OSHA HAZWOPER

1 Year in the Industry Ms. Lo is a staff scientist at Langan. Her experience includes conducting and supporting Phase I Environmental Site Assessments (ESAs), remedial investigation, and litigation projects throughout the country, focusing on Southern California and New Jersey. She has also performed soil and groundwater sampling to support waste characterization, soil characterization, plume evaluation, and remediation. Selected Projects Environmental Due Diligence Ms. Lo has conducted Phase I ESAs at multiple commercial and industrial sites in California and New Jersey to support property redevelopment and lease termination/negotiation activities. Phase I ESAs were conducted in accordance with standard ASTM E1527-13 protocols and included reviewing historical documents for the subject properties and surrounding sites and conducting site reconnaissance to evaluate for the presence of recognized environmental conditions (RECs) at the sites. Environmental Investigation Ms. Lo has assisted with historical background research and report preparation for a confidential large cement mine redevelopment project in Riverside County. The purpose of the background research was to assist with evaluating impacts of cement kiln dust (CKD) and hexavalent chromium (CrVI) in soil and groundwater resulting from past mining operations. She has supported developing a Site Assessment Work Plan and its implementation which included extensive soil investigations at the Riverside project for site soil characterization. Groundwater Remediation Ms. Lo has observed and conducted groundwater sampling to support evaluation and cleanup of CrVI and volatile organic compounds (VOCs) in groundwater at a former chrome plating site in New Jersey. The evaluation and cleanup is being overseen by the New Jersey Department of Environmental Protection (NJDEP). Litigation Support Ms. Lo has provided litigation support for confidential soil assessment and remediation projects in Montana and New Jersey. Her involvement included historical background research, including reviewing past consultants’ Phase I ESAs, remediation work plans, remedial action implementation reports, and agency correspondence. Based on her reviews, she assisted with developing lines of evidence to determine the source of tetrachloroethene (PCE) contamination detected in off-site groundwater. She has also reviewed historical financial data on behalf of clients to resolve disputes related to allocation of financial responsibility for environmental cleanup.

Kathleen Lo Staff Scientist Environmental Remediation

Education B.S., Environmental Science Environmental Engineering Minor University of California, Los Angeles

Certifications OSHA 40 Hour HAZWOPER Affiliations American Society of Civil Engineers (ASCE)

*Project worked on while at Norwest Corporation in Denver.

7 years in the industry ~ 2 years with Langan Mr. Houghton has seven years of experience as hydrogeologist and wellsite geologist, working on projects nationally and internationally. Mr. Houghton has experience completing site mitigation plans, groundwater monitoring plans, quarterly groundwater monitoring reports, and closure reports. His experience includes but not limited to, environmental and geotechnical drilling, soil remediation, monitoring well installation, micro-pile installation, and hazardous soil characterization. He has performed drilling, coring, and testing wells and boreholes of various depths from 20 feet to greater than 2,500 feet. His water resource projects have supported various industries including environmental remediation, construction, oil sands, oil shale, coal, phosphate, in-situ uranium, and hard rock mining. Mr. Houghton has experience with karst, fractured rock, unconsolidated material, regional paleochannel, and alpine till hydrogeology. Additionally, he has experience with mud rotary, sonic, air rotary, auger, and direct push drilling methods. Mr. Houghton has designed, installed, and tested monitoring wells, standpipe piezometers, slope inclinometers, and vibrating wire piezometers. Selected Projects • Santa Clara Golf and Tennis Club - Landfill Hydrogeologic

Characterization, Santa Clara, CA • Former Hayward Cleaners, Creekside Center – Site Investigation,

Hayward, CA • Golden State Warriors Arena - Site Dewatering Well Installation, San

Francisco, CA • 3093 Broadway Street - Petroleum Remediation and Soil Management,

Oakland, CA • 1st and Mission Streets – Geotechnical Borings, San Francisco, CA • Casitas Avenue – Tieback installation, San Francisco, CA • Block 6E - VMS installation, Mission Bay, San Francisco, CA • 100 Hooper Street - VMS Installation, Mission Bay, San Francisco • Well installation and Aquifer Test, Riverside County, CA • Muwaqqar Chalk-Marl Formation, Geomechanical Micro-Frac Well

Testing, Jordan* • Monitoring Well Installation, Soda Springs, ID* • Monitoring Well Installation and Aquifer Testing, Athabasca Oil Sands,

Alberta, Canada* • In-Situ Uranium Recovery Aquifer Testing And Modeling, Converse

County, WY* • Aquifer Testing of Active Coal Mine, Farmington, NM*

Tyler Houghton Senior Staff Geologist Environmental Engineering

Education M.S., Geology Colorado State University B.S., Environmental Science & Geology Northern Arizona University

Certifications 40 Hour OSHA Hazardous Waste Operations and Emergency Response (HAZWOPER) (29 CFR 1910.120) 8-Hour Annual Refresher OSHA HAZWOPER (29 CFR 1910.120) (renewed annually) OSHA Confined Spaces (29 CFR 1910.146) and Cal-OSHA 5157) First Aid/CPR/AED American Red Cross First Aid/CPR/AED November 2017 H2S Alive Workplace Hazardous Materials Information System (WHMIS) MasterDrive Defensive and Winter Driving Oil Sands Safety Association (OSSA)

Tyler Houghton


Selected Publications, Reports, and Presentations Houghton, T. B.. (2011), “Hydrogeologic Characterization of an Alpine Glacial Till, Snowy Range, Wyoming.” Master's Thesis. Colorado State University, Fort Collins, CO, 2011. Houghton, T.B., M.J. Ronayne, J.D. Stednick, and R.C. Musselman (2011), “Scale-Dependent Hydraulic Conductivity of Mountain Glacial Sediments and Implications for Shallow Groundwater Recharge and Stream Baseflow,” Presented at 2011 Fall Meeting, AGU, San Francisco, CA.

5 years in the industry Ms. Prohoroff has more than five years of industry experience focusing on due diligence environmental assessments, remediation, agency compliance, and construction projects. She specializes in remediation of oil and gas sites. Her experience includes permitting, data evaluation, drilling, and groundwater monitoring and sampling at various sites throughout Southern California. Ms. Prohoroff’s expertise also includes soil sampling, data gaps analysis, field sampling optimization, data interpretation, project close-out requirements, and remedy operations and maintenance. She has played a key role in preparing project execution plans, compliance monitoring reports, and remedial action completion reports for commercial, industrial, residential, and oil and gas clients. Selected Projects Confidential mining client, Riverside County, CA – Ms. Prohoroff oversaw drilling, installation, and development of groundwater monitoring wells and conducted groundwater sampling at a former mine site in Riverside County, California. The purpose of the groundwater monitoring and sampling was to evaluate chromium VI (CrVI) in groundwater and to provide data in support of closure from the California Department of Toxic Substances Control (DTSC). Ms. Prohoroff also conducted desktop reviews to evaluate the effect of regional CrVI concentrations on site-wide results. Confidential oil and gas client, Santa Barbara County, California - The project involved negotiations with state, federal, and local agencies throughout the project. In addition, field activities included strategic excavation of PCB-laden material within a canyon in Santa Barbara County. Ms. Prohoroff conducted periodic groundwater monitoring and assisted in day-to-day quality control and data interpretation to facilitate field activities. She enhanced the data interface and GIS tool to optimize field sampling and potential disposal volumes. Ms. Prohoroff also oversaw staff and subcontractors during excavation and site restoration activities with a focus on ensuring compliance with state (RWQCB, DTSC, etc.), federal (EPA, USACE, etc.) and local (Santa Barbara County) agencies. She was a key author of the final remedial action report and NPDES reporting close-out, and facilitated close-out activities including well abandonment and treatment system removal. The project was completed 6 months ahead of schedule and saved the client more than $1 million. Confidential oil and gas client, Kern County, CA - The project involved remediation of a 70-square-mile oil field under a cleanup and abatement order from the California Department of Toxic Substances Control (DTSC). On behalf of a major stakeholder of the oil field, Ms. Prohoroff conducted third-party desktop reviews of investigation and removal action work plans, investigation reports, and remediation and restoration close-out reports

Rachel Prohoroff, GIT Senior Staff Geologist Environmental Engineering

Education B.S., Geology, California State University of Fresno, 2011 Graduate Coursework in Geology, Stanford University, 2011-2013 Certifications Geologist in Training, State of California OSHA 40-hr Health and Safety Training OSHA 10-hr Supervisor Training Asbestos Awareness Training Affiliations American Geophysical Union Geological Society of America South Coast Geological Society

Rachel Prohoroff, GIT

prepared by the project owner. She assisted the client in preparing responses to technical documents and interfacing with other stakeholders. Confidential oil and gas client, Los Angeles County, CA - Ms. Prohoroff was a senior staff task manager performing preliminary due diligence investigation of a 1,300-acre facility in northern Los Angeles County. Her duties included preparing a project execution plan, which consisted of assessing, decommissioning, and demolishing over 100,000 linear feet of piping and associated fuel facilities. The site was located in a sensitive habitat area, which also included waters of the state. Ms. Prohoroff coordinated and assisted with prioritizing removal activities and obtaining appropriate local and state permits to remove and decommission assets within sensitive habitats. Due diligence projects - Ms. Prohoroff has completed Phase I and Phase II ESAs at more than 20 commercial, industrial, multi-family residential and mixed-use developments throughout Los Angeles, San Diego, Riverside, Orange, Fresno, and Kern Counties. Phase I ESA activities included the standard ASTM E1527-13 protocols along with building and facility assessments (asbestos [ACM], lead-based paint [LBP], and polychlorinated biphenyl [PCB] surveys). Phase I and Phase II ESA activities were completed in connection with property transactions in the vicinity of airports, railways, and freeways. Ms. Prohoroff has developed remedial investigation and soil management programs based on potential environmental conditions identified during Phase I ESAs. Additionally, she has prepared remedial strategies in coordination with demolition and grading activities for anticipated future use. Phase II ESA activities have included groundwater, soil, and soil gas assessments to identify potential risks for property transfers. Environmental Remediation Services, Huntington Beach, CA - On behalf of the City of Huntington Beach, Ms. Prohoroff provided technical review and oversight for renovation and development of properties. She completed third-party review of environmental assessment reports for proposed residential and commercial developments. She coordinated with the Huntington Beach Fire Department to address environmental concerns identified during the review, which was necessary to receive final approval of the building permits. Publications: Prohoroff, R., Wakabayashi, J., & Dumitru, T.A. (2012). Sandstone matrix olistostrome deposited on intra-subduction complex serpentinite, Franciscan Complex, western Marin County, California. Tectonophysics, 568, 296-305.

1 year with Langan Megan earned her BS in Environmental Engineering at California Polytechnic State University, San Luis Obispo in 2017. She received her MS in Civil and Environmental Engineering with a focus of water resources at Cal Poly San Luis Obispo in 2018. Megan conducted research for her graduate thesis on the treatment of nitrate in stormwater using clay nanoparticles.

Selected Project Experience • Vadose zone and groundwater modeling • Contaminant fate and transport modeling in soils and

groundwater • Groundwater basin management plans and monitoring programs • Aquifer/hydraulic testing and characterization • Groundwater basin boundary studies • Well installation, monitoring and sampling • Groundwater numerical flow modeling and identifying model

domain boundaries • Developing workplans, scopes of work, and sampling and analysis

plans • Well inventory and citing

Selected Publications and Presentations Abutin, Megan P. Effects of Using Clay Nanoparticles as a Soil Amendment to Remove Nitrate from Stormwater. 2018. Cal Poly, Master’s Thesis. https://digitalcommons.calpoly.edu/theses/.

Megan Abutin, EIT Staff Engineer Environmental and Civil Engineering

Education M.S., Civil and Environmental Engineering California Polytechnic State University B.S., Environmental Engineering California Polytechnic State University

Certifications/Training Engineer in Training (EIT) in CA AQTESOLV WinTR-55 EPA Net HEC-HMS HEC-RAS EPA SWMM MODFLOW AutoCAD MATLAB SewerCAD Gnuplot

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4Licensing and Certification Requirements

12/12/2018 Search - DCA

https://search.dca.ca.gov/results 1/1

SHIPMAN, DORINDA CLAUSELICENSE NUMBER: 215 LICENSE TYPE: HYDROGEOLOGIST LICENSE STATUS: CLEAR EXPIRATION DATE: DECEMBER 31, 2019 SECONDARY STATUS: N/A CITY: SAN FRANCISCO STATE: CALIFORNIA COUNTY: SAN FRANCISCO ZIP: 94133

https://search.dca.ca.gov/details/7500/HG/215/41235eec5311aec423692c9df65c5572

12/12/2018 Search - DCA


SHIPMAN, DORINDA CLAUSELICENSE NUMBER: 5515 LICENSE TYPE: GEOLOGIST LICENSE STATUS: CLEAR EXPIRATION DATE: DECEMBER 31, 2019 SECONDARY STATUS: N/A CITY: SAN FRANCISCO STATE: CALIFORNIA COUNTY: SAN FRANCISCO ZIP: 94133

https://search.dca.ca.gov/details/7500/GEO/5515/eaccfec5b813f0b1e280cc1b2c9c5098

12/12/2018 Search - DCA


TRINGALE, PHILIP THOMASLICENSE NUMBER: 39973 LICENSE TYPE: CIVIL ENGINEER LICENSE STATUS: CLEAR EXPIRATION DATE: DECEMBER 31, 2019 SECONDARY STATUS: N/A CITY: MORAGA STATE: CALIFORNIA COUNTY: CONTRA COSTA ZIP: 94556

https://search.dca.ca.gov/details/7500/C/39973/e2643d040662dcb11d34b6b236a0a701

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5Price Forms

27

6Non-Collusion Declaration

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7Required Forms

RFP No. 19-016CA Section V. “Proposal Content and Forms” - Pg 15 of 15

On-Call Engineering and Professional Services Contracts

INDUSTRIAL SAFETY RECORD

(To be Completed and Submitted with Consultant’s Proposal)

Number of OSHA Violations within the last 5 years (must state zero if none):

___ Serious ___ Willful ___ Repeat ___ Other ___ Unclass _____ Total

Firm Name (Print)

Signature

Name and Title (Print)

Date

0 0 0 0 0 0

Langan Engineering

Tony Moffa, Corporate Health & Safety Manager

12/14/18

response to rfp no. 19-016ca for

Documents