Digital Commons Network^™

Solar-Powered Microgrids In Northern California: An Opportunity For Resilience, Marina Riddle

Master's Projects and Capstones

Planned and unplanned power outages have been increasing in frequency and duration, negatively impacting all public sectors, and threatening public safety. These outages are deadly to those who rely on medical devices. As climate change-fueled extreme weather events (wildfires, earthquakes, storms, etc.) also increase in frequency, our electrical grid must be prepared to bounce back. Microgrids provide necessary redundancy and reliability. Through a novel GIS suitability analysis, based on solar radiation, land use type, local energy demand, distance to transmission lines, distance to roads, and slope, optimal locations for solar-powered microgrids throughout Northern California were determined. The counties of Fresno, …

Stormwater To Groundwater: How California Can Increase Groundwater Storage And Build Climate Resilience., Emily M. Perales

Master's Projects and Capstones

California is predicted to have more intense and frequent changes in weather patterns within the next 50 years. Historical and current groundwater use for residential and agricultural use is unsustainable and is creating significant deficits in groundwater aquifers throughout the state. To better adapt to potential damages caused by atmospheric rivers, better stormwater management and capture could increase California’s Climate adaptability. This study is focused on the means and methods to capture stormwater and increase groundwater recharge. Nature-based infrastructure (NBI), or Green Infrastructure (GI), has been used in urban areas throughout the country to mitigate harmful stormwater effects by replicating …

Offshore Wind Energy And Seabird Collision Vulnerability In California, Whitney Grover

Master's Projects and Capstones

California has ambitious clean energy goals designed to help mitigate the worst outcomes of climate change. Offshore wind is an important part of the solution to meet California’s clean energy goals, but has potential negative impacts on the marine environment. As offshore wind energy is new to California, this paper reviews and synthesizes existing literature from other parts of the world, looking at the real and theoretical risk of seabird collision with offshore wind turbines. Learnings from existing offshore wind projects in the U.K. as well as theoretical and modeled risk assessments are applied to California’s plans to determine the …

Desal In So. Cal - Are We There Yet?, Luke F. Swanson

Master's Projects and Capstones

Southern California has access to a finite amount of water that is vulnerable to the state’s changing climate and growing population. The increasing population’s water demands and hydrologic variability due to climate change inspire different proposals to solve these water limitations. Seawater or brackish water desalination and wastewater recycling are all water resources that have the potential to help meet the water needs of Southern California, specifically the South Coast Hydrologic Region. Every water resource requires energy to transport, treat, and distribute the water for use; in an era of climate change, when energy use contributes to greenhouse gases, utilities …

Assessing The Efficacy Of California’S Wildfire And Forest Resilience Action Plan, Chloe Nelson

Master's Projects and Capstones

California’s wildfire threat eclipses current forestry management and wildfire mitigation strategies in place to protect people, infrastructure, and the natural environment. Climate change escalates wildfire risks with declining water supply coupled with hotter, drier conditions. California’s Wildfire and Forest Resilience Action Plan attempts to integrate and build upon previously successful wildfire resilience plans to amplify the scale and pace of the state’s land management and community protections. This research assesses the plan’s efficacy to respond to the growing wildfire threat. This study investigates if there is equitable planning for the needs of high-wildfire risk groups living in the WUI and …

Challenges Of Electrifying Medium And Heavy Duty Vehicles In California And How These Challenges Can Be Overcome, Tracy Tilley

Master's Projects and Capstones

California is electrifying medium and heavy vehicles (vehicles weighing over 8,500 pounds) to reduce greenhouse gas emissions and provide environmental justice for disadvantaged communities. These vehicles are used for delivery, construction, refuse collection or long haul trucking. The three main challenges of electrification are infrastructure, policy and funding. To address these challenges, policy analysis was used to review California’s policies already in place for electrification of medium and heavy duty vehicles. Comparative analysis was used to look at policies in other countries and environmental programs for strategies to help electrification efforts.

California faces a lack of infrastructure of medium and …

Wildfire Exposure To Critical Habitat Of Endangered And Threatened Species In California, Kristin Butcher

Master's Theses

Researchers, fire ecologists and wildlife managers are concerned about impact to endangered and threatened species and their critical habitat due to the projected increase in future wildfires. Wildfires have been studied in California for the last six decades and have been increasing at an alarming rate since the 1980’s. In this study, I use the 2018 spatial dataset for critical habitat of federally endangered and threatened species located in the state boundaries of California and compare it to a spatial dataset for wildfires that have occurred over the span of 32 years (1984 to 2016). Trends are derived from spatial …

Utilizing Compost For Carbon Sequestration: A Strategy For Climate Goals And Land Use Management, Sarah R. Koplowicz

Master's Projects and Capstones

In recent years, research has been developed for the use of compost combined with managed grazing (and manure) on grasslands (DeLonge et al, 2013) or rangelands, resulting in carbon sequestration from the atmosphere back into soil at a relatively high rate . The Marin Carbon Project (MCP) was established as a collaborative effort to analyze the potential effects of this technique for greenhouse gas mitigation. The MCP established that combining compost applications with managed livestock grazing benefits the soil health and native plant community, while simultaneously enabling carbon sequestration through the mechanisms of plant production and microbial activity. Additional recent …

Sustainably Managing Groundwater - Surface Water Interactions Within The Santa Rosa Plain Basin, Rhianna Frank

Master's Projects and Capstones

In this paper, I designed a strategy for implementation of sustainably managing groundwater-surface water interactions in the Santa Rosa Plain Basin in compliance with the requirements set forth by the Sustainable Groundwater Management Act of 2014. The research objectives for this analysis are: (1) to fully examine the requirements of the Sustainable Groundwater Management Act and the implications that implementation will have on the Santa Rosa Plain Basin, (2) to use technical data gathered regionally coupled with related policy design theory to analyze how groundwater and surface water interactions can be managed to meet the requirements set forth in this …

Causal Fire Relationships In Sonoma County & Identification Of Suitable Fire Management Strategies, Allison Howlett

Master's Projects and Capstones

Acknowledging recent wildfires that have set historic fire size records in both Northern and Southern California, it is important to understand what impacts can be expected and how variations in regional characteristics can influence fire severity. Combining a long history of droughts alongside periodic rain events this paper considers the causal fire relationships and fire management strategies necessary for implementation for future fire size and fire severity reduction in Sonoma County. Throughout this paper a subset of questions are answered regarding fire severity, precipitation, erosion and sediment response. Methods include the examination of peer-reviewed articles and grey sources to identify …

Remediation Strategies For Mercury Contaminated Lakes And Reservoirs Within The State Of California, Emily Chortek

Master's Projects and Capstones

Mercury is an environmental and public health concern due to its neurodegenerative effects and ubiquitous concentration within the environment. To mitigate these risks and reduce concentrations within the environment, remediation methods are necessary. The purpose of this paper is to investigate and evaluate the efficacy of a number of remediation options for mercury contaminated lakes and reservoirs in the State of California. This paper also identifies a number of challenges associated with the implementation of each method and provides recommendations for environmental managers to use when remediating mercury contaminated lakes. Hypolimnetic oxygenation (HOS) was found to be the least problematic …

Examining The Effects Of Policy Interventions On Increasing Electric Vehicle Adoption In California, Ethan G. Mcdermott

Master's Projects and Capstones

Any significant effort to reduce global emissions of greenhouse gasses must address the growing concern of the transportation sector’s inability to meaningfully reduce its emissions contribution. A major shift in the primary fuel used in the sector away from petroleum-based fuel to electricity is one potential way the sector can lower its emissions and transition into a sustainable future. However, a number of barriers face the electric vehicle market, including competing against an already mature vehicle market, battling consumer preferences, and overcoming technical challenges. This paper examines several policy proposals to combat these barriers and examines the impact similar policies …

From A Public Health Perspective: Fracking And Other Unconventional Oil And Gas Extraction Techniques In California, Hilda J. Cerros

Master's Projects and Capstones

California strives to be a leader in clean energy, yet it the third largest producer of oil and gas. To tackle the need for a cleaner environment, free of toxic chemicals, the Center for Environmental Health (CEH) establish a Healthy Energy Choice campaign. CEH and the Healthy Energy Choice Program collaborate with other organizations and communities to shine light on the public health impacts associated with fracking and other oil and gas extraction methods. The following paper is a summary of a 300- hour field work experience completed at the CEH’s Healthy Energy Choice Program specifically with an analyzes of …

Life Cycle Assessment Of Reclaimed Water For Potable And Nonpotable Reuse In California, Antonia Estevez-Olea

Master's Projects and Capstones

Extreme drought, water scarcity and population growth is forcing California to seek out new water sources. Reclaimed water is considered one of the best alternatives to alleviate water shortages and help meet the water demand sustainably. However, the environmental impacts of reclaimed water have not been fully studied to ensure that the overall benefits of reclaimed water do indeed outweigh the environmental, social, and economic costs. In this study a life cycle assessment (LCA) for potable (direct and indirect) and nonpotable reuse will be conducted to identify and quantify major environmental, social, and economic problems that are attributed to reclaimed …

Evaluation Of The Development And Effectiveness Of Copper Total Maximum Daily Loads (Tmdls) To Achieve Marine Water Quality Criteria, Joanna Florer

Master's Projects and Capstones

Elevated concentrations of certain chemicals in surface water are known to be toxic to aquatic organisms (e.g., barnacles, algae, and fish). For a number of these chemicals (e.g., tributyltin [TBT], copper) federal and state water quality standards exist to protect aquatic organisms. As a means to comply with water quality standards, regulatory agencies establish Total Maximum Daily Loads (TMDLs) to reduce concentrations of toxic chemicals from entering waterways. A TMDL determines the maximum amount of pollutant loading a water body can sustain and still achieve water quality standards; they are developed to ensure that surface water concentrations meet applicable criteria. …