Isaias Marroquin

Experience

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  CARL'S JR. RESTAURANTS, LLC

  Aug 2016 - Apr 2017

  Cashier
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  Postmates by Uber

  Aug 2017 - May 2019

  Delivery Driver
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  UC Berkeley College of Engineering

  Sept 2017 - May 2018

  Cal Concrete Canoe: Materials Researcher

  Researched concrete aggregates to optimize concrete quality in its application.Tested for the mechanical properties of experimental concrete cylinders made in the Davis lab utilizing different materials, dimensions, mixes, and concrete compression machinery.

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  Cal Construction

  Sept 2018 - May 2020

  Sustainability - Sustainable Sites, Local Impacts, Carbon, and Waste Specialist

  Analyzed site plans, schedules, measured data, and practices performed on site to propose methods that would enhance the relationship between the construction site and its surrounding environment, economy, and society.Engineered and effectively presented sustainable solutions to various construction site issues presented by the project owner relating to carbon emissions, construction materials, waste, energy, water, and local impacts in an OAC meeting.

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  Cal Sustainable Solutions Competition Team

  Apr 2019 - Jun 2020

  Project Manager

  Oversaw and guided all sustainable design, structural engineering, and construction management processes.Ensured milestones and goals set by team were successfully met, encouraged a sustainable team structure and functionality, and pushed every team member to their fullest potential.Designed and built a temporary bus stop structure to be implemented in a city hosting a global gathering; utilizing sustainable materials, site access, basic layout, and safe and efficient construction practices. Occupant sheltering, thoughtful use of public space, accessibility, security, and quick assemblage of the physical structure were of priority in the realm of tactical urbanism. Show less

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  BKF Engineers

  May 2019 - Aug 2019

  Transportation Engineer Assistant

  Created existing drainage and tree removal base files, incorporated comments received by Caltrans and project managers across all sheet types within progressive plan set, updated pavement sections in typical cross section sheets, and optimized dimensions and locations of a ditch design for various large-scale county highway projects.Researched bicyclist/pedestrian data of Los Gatos needed to formulate a successful bicycle/pedestrian bridge project proposal and collected ADA data from several sites in Saratoga to formulate a consulting report.Drafted details such as concrete barriers and drainage systems using AutoCAD Civil 3D. Show less

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  Transportation Sustainability Research Center

  Sept 2019 - Aug 2020

  Undergraduate Researcher

  Campus Sustainable Mobility Study:Participated in a research study whose goal was to compile a comprehensive long term sustainable transportation planning report for the UC Berkeley campus. The report highlighted the deficits in mobility on and around the UC Berkeley campus due to current transportation infrastructure, programs, and strategies in place. By investigating extensive commuter data and conducting interviews with transportation department specialists from other campuses across the US, sustainable mobility practices and implementations were recommended to the campus. The study focused on exploring, evaluating, and recommending potential mitigation strategies that support the primary goals developed by the Institute of Transportation Studies (ITS) Ad Hoc Committee which was formed to provide consultation on campus-wide policies and projects that aim to meet the campus transportation need in environmentally, socially, and economically sustainable ways. My role as an undergraduate researcher, employed by the Transportation Sustainability Research Center (TSRC), was to clean, manipulate, and analyze campus-wide commuter datasets from the parking and transportation department covering micro mobility and vehicle patterns. This included analyzing survey responses in conjunction with user-level and trip-level shared mobility activity data using Python programming and Excel spreadsheets. City-wide commuter data from public transportation agencies such as AC Transit and Lyft was also part of my work to extract useful metrics. In a group of three (two undergrads and one PhD student under Professor Susan Shaheen), we combined survey and activity data with geospatial census data to identify trends in travel behavior and visualize impacts on travel demand and mode choice among shared-use mobility users. This allowed us to recognize and recommend sustainable strategies that the campus could implement to fill the gaps in its current transportation establishment. Show less

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  Arup

  Jun 2020 - Jul 2020

  Civil Engineering Intern

  Worked in a team of eleven interns from a wide range of disciplines to analyze the innovative design features implemented in the San Diego Kaiser Medical Center which achieved double LEED Platinum after months of operation. MEP systems, lighting, acoustics, BIM utilization, and more were studied to reveal both their benefits and limitations. Consequently, we broke down the project into three areas that could be improved; the efficiency of how energy is being used to power the MEP systems, the on-site energy production of solar panels, and both the management and utilization of energy demand data. As interns, we added value to the existing project by proposing methods that would reduce the carbon footprint and cost of operation, improve air quality, and continuously make improvements by using artificial intelligence to simplify the amount of work required to transform energy demand data acquired through already implemented meters, for decision making. Our work was guided by meeting, interviewing, and communicating with various Arup professionals from different disciplines and around the world that worked on the project during its planning and design phase for expert knowledge. I also attended the weekly meetings of the Los Angeles civil engineering team of Arup to be informed with the different infrastructure projects they were working on and individually with the team's associate to ask questions about their work for my own knowledge. Show less

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  Professor Arpad Horvath

  Sept 2020 - Dec 2020

  Undergraduate Researcher

  Life Cycle Carbon Footprint of Renewable Electricity Sources Literature Review:Conducted a semester long literature review on the life cycle carbon equivalent emissions for renewable sources of electricity in the United States. Under the supervision of Dr. Arpad Horvath, I read, annotated, and questioned previous studies that aim at quantifying the cradle-to-grave greenhouse gas emissions of renewable electricity sources such as photovoltaic, nuclear, wind, and hydro as they are often considered zero emission sources which is not the case from a life cycle perspective. As a result, we were able to update Professor Horvath's lecture slides regarding the life cycle carbon emission factor of these energy sources for two courses that he teaches; Engineered Systems and Sustainability (CE11) and Civil Systems and the Environment (CE268E). Show less

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  UC Berkeley College of Engineering

  Aug 2021 - Dec 2022

  Graduate Student Instructor

  Fluid Mechanics (CE 100):Reviewed concepts, equations, and applications of fluid statics and dynamics outside of lecture to 58 students. Aided in hands-on laboratory experiments and hosted office hours as a resource for assignments and exams.Topics taught regarding hydrostatics include the fundamental concept of pressure, force, and moments given fluid control volumes, panels of different geometry, and physical objects with mass. The concept of buoyancy was explored and Pascal's Principle was covered in depth by applying it to various static fluid set-ups in containers of varying volumetric configurations and fluid properties such as density. Topics taught regarding fluid in motion include the fundamental concepts of steady, transition, and uniform flow as well as turbulent and laminar flows which are characterized by Reynold's number. Velocity vectors, volumetric flows, and streamlines led to mass conservation as well as specific applications of Pascal's in running fluids. The energy equation which includes pressure, potential energy, kinetic energy, frictional losses and engineered physical components integrated into fluid flows such as a turbine or pump was discussed in depth in terms of its different units, applications, assumptions, and implications when applied to different fluid systems. Energy conservation was a very important underlying concept. The Venturi phenomena and Toricelli's theorem was discussed. The different kinds of frictional head losses that arise from varying geometry (minor) as well as turbulence coupled with the material of the container (major) was covered which introduced the Moody diagram. Topics taught regarding physical objects in motion under the influence of surrounding fluid include the application of two distinct equations that sum forces acting on an object with conservation of momentum being a key underlying concept. Forces of shear, pressure, thrust, buoyancy, lift, drag, gravity, and anchor were covered in depth. Show less

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  UC Berkeley, Rausser College of Natural Resources

  Jul 2022 - Aug 2022

  Head Graduate Student Instructor

  Introduction to Culture and Natural Resource Management (ESPM 50ac):Head graduate student instructor (GSI) for the most popular course within the Environmental Science, Policy, and Management department under a six week summer course structure. Led discussion sections to facilitate student understanding of required course readings related to how the cultural and historical relationships between humans and nature have molded society's management of natural resources and affected the health of the environment which we all depend on. Graded reflections on readings as well as the written portion of the midterm and final exam for all 122 students. Show less

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  UC Berkeley College of Letters & Science

  Aug 2022 - Dec 2022

  Graduate Student Instructor

  Oceans (EPS 82):Graduate student instructor (GSI) for the most popular course within the Earth and Planetary Sciences department. Enhanced students’ understanding of the biology, physics, chemistry, geology, culture, history, and implications of the oceanic and atmospheric systems on global processes and mechanisms related to the natural environment. As an engineer, provided my own understanding and knowledge of the chemical and physical fundamentals touched upon in the course. Lectured in front of hundreds of students reviewing concepts previously taught in class as preparation for exams. Designed and formulated engaging questions for assignments and exams. Show less

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  National Renewable Energy Laboratory

  Feb 2023 - now

  Spatial and temporal air pollution modeling of various emissions sources such as heavy-duty trucks, biorefineries, petroleum refineries, and power plants. Upon quantifying the emissions of the conventionally fueled source, a proposed strategy that causes a perturbation in emissions is integrated into the model. A partial electrification of trucks, the co-production of useful energy and solid fuels at biorefineries, and a change in the input feedstock and process design of biorefining, petroleum refining, or power generation are methods that can cause a change in emissions per unit of activity performed by each emission source. Given a spatial and temporal domain, the model then predicts the dispersion and fate of emitted pollutants throughout the atmosphere via governing equations that consider atmospheric physics and chemistry. The estimated incremental changes in ambient air pollutant concentrations at explicit locations within the model are attributable to the input emission source and its proposed change as all other sources that contribute to ambient air pollution are considered constant. These results are then used to evaluate the effectiveness of the proposed emissions reduction strategy on human health by estimating the health impacts that result from exposure to these incremental changes in pollutant concentrations. Special focus on equitable distribution of the burdens and benefits especially in regards to disadvantaged communities. Parametric python based life cycle assessment (LCA) on low temperature, geothermal, ground source heat pump based district heating and cooling systems for applications across the U.S. Additionally, the repurposing of depleted oil and gas well sites to serve as the boreholes for indirect geothermal heat exchange or pipe placeholders for direct geothermal use in the context of LCA is also considered. Show less

  • Environmental Engineer

    Feb 2023 - now

  • Environmental Engineer - Researcher II

    Feb 2023 - now