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Oilfield wastewater disposal site closure Question 2

mtebbe

percolation and evaporation pond operation accepting oilfield produced water, which is a highly saline byproduct of local oil production that contains small concentrations of cancer-causing chemicals.

The wastewater allegedly contained arsenic, benzene, ethylbenzene, naphthalene, radionuclides and toluene.Clean Water Fund and AIR alleged the practice has created an underground plume that has spread more than two miles since monitoring wells were established in the area in 2004, and that the contamination may eventually reach Buttonwillow's drinking water supply.

Oilfield wastewater disposal site closure Question 5

mtebbe

Valley Water Management Company (owner) & Sentinel Peak Resources (oil producer): fined $645,000

Clean Water Fund & Association of Irritated Residents: sued using Prop 65 (Safe Drinking Water and Toxic Enforcement Act of 1986) to shut down pond

other oil companies: inject wastewater deep underground in or near reservoirs where it originated

Central Valley Regional Water Quality Control Board: forced closure of pond out of concern that underground plume will reach Kern River and Bakersfield's drinking water

What steps does a user need to take to produce analytically sharp or provocative data visualizations with this data resource?

bmvuong

The main page on the site immediately directs you to a search bar where you can search for a state agency, topic, or keywords. There is also a guidebook and a public open data training video for a user to learn how to find data and produce data visualizations.

What data visualizations illustrate how this data set can be leveraged to characterize environmental injustice in different sett

bmvuong

This figure shows a smaller window open within the California State Water Resources Control Board page on Cal Open Data Portal, providing straightforward access to an Excel document displaying a dataset within the state 2019 water quality status report that sampled 1,2,3-trichloropropane, a drinking water contaminant.

How scales (county, regional, neighborhood, census tract) can be seen through this data resource?

bmvuong

Cal Open Data Portal draws data from state agencies. Census tracts can be searched for, for example, searching for Census Tract Disadvantaged Communities 2018, opens a synopsis and map showing each tract and its attributes. However, some of these data sets are linked to GIS programs, meaning they could be layers that are created to add to a map, making it difficult for non-GIS users to navigate and understand. In an attempt to provide assistance with this measure, the website provides a guidebook and a public open data training video for a user to learn how to find data and produce data visualizations.