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Pb. Atomic Number 82. 

Divorced from its placement on the periodic table, the element finds itself exposed in a garden, nestled between bioretention and a bus depot. 

Researchers came into to town and made the lead in the soil ledgible and knowable. Soil was tested and this dirt pile was labeled a hot spot. The soil, through analysis in a lab, became suddently differentiatiated from it's environment.  Speculation on the origins of now changed earth ran rampant. Yes, the lead is a chemical legacy, but from where or from whom? Perhaps a long shuttered paint store was dumping its expired wares behind a shop. The chemical legacy proves persistant, but its origin story has degrated with time. Would there be any purpose to tracking the origin of the spot? Are there even actors to hold accountable? Should resources be spent to remediate the small environmental harms when others lurk that are larger in scale in and in affect?

While we ponder, the site is marked by a material more durable than our more human legacies. A concrete marker, or bench (depending on your tolerance for risk), tells a visitor of a history bound the earth. To intervene, the site is covered with dirt, a sign cautions the curious to resist the urge to disturb. To remediate this spot would take time, money, and expertise when all those resources are in short supply. Instead, the area is stewarded to make visible its contents. A delightfully perverse cue to care, inviting disuse and intentional avoidance. Let the earth lie.

I would love to be involved going forward in this project. I plan on attending 4S and could concieveably participate in a presentation on the work in St. Louis. I also can provide administrative support to make that field campus happen. 

Additionally, my colleagues in Baltimore are enthusiastic about bringing a Field Campus to the city. I have a project retreat early next week where I will be presenting on my participation in the campus and some brief ideas for how my research project and the Baltimore Ecosystem Study might be able to be involved. 

• I was most interested in the time spent at GCADD. I loved learning about that space, it's history, and the participants working to build it up. 
• I came out of the field campus extremely exhaused. Personally I love this feeling. There is something extremely comforting to me about having a brain exploding with new ideas and a body too tired to do anything with it. I do have concerns about how experiences like the field campus, and the exhaustive toll they take, may limit the audience who chooses to participate. I wonder if future field campuses might think a little more about how make the experience more accessible to participants with different physical or mental health needs. 
• While I enjoyed the breadth of perspectives that participated in this experience, I think the campus could benefit with the inclusion of more scientists. At Weldon Spring, I really wish we had an engineer in our group to talk about building a site like that. Even if it might be difficult to get subject area experts, just a few ecologists or engineers in the room could have added depth to our conversations. 

http://disaster-sts-network.org/users/amanda-k-phillips-de-lucas

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Green Stormwater Infrastructure
Prior to the 1970's, many US cities managed stormwater through piped conveyance systems. Flooding was once considered the most significant risk associated with rainfall. System builders built water infrastructure to accommodate volume. Most cities in the US have what is called a combined sewer system (CSS). This system pipes stormwater and municipal wastewater together. The water is then treated and then released into receiving bodies. St. Louis is one of the rare cities (Baltimore, where my research is based is another) that has a municipal separated stormwater system (MS4). In a separated system, a system of pipes keeps stormwater separate from other wastewaters. 

In the 1970's ecological research, some of which came from the EPA's National Urban Research Program, began to demonstrate that nutrients in runoff were responsible for environmental pollution. In turn, municipal engineers transitioned to thinking about tools and techniques for decreasing this nutrient load. In St. Louis, the separated system operates under a federal consent decree with the EPA where the city must reduce the overall percentage of nutrients (nitrogen and phosphorus) carried through runoff. The most recent strategy for managing this problem is Green Stormwater Infrastructure (GSI). Although the problems associated with GSI are of local relevance, they are managed through state and federal governance strategies.

While GSI is difficult to define, many times installations feature landscaped elements that aim to mimic the pre-development hydrological processes of a given site. In urban areas, these projects often utilize vacant lands or reduce existing impervious surface cover. Many planners and community groups also suggest that GSI provides additional social benefits through an increase in community green space, reduction in urban heat island, and improved property values. 

This image from Missouri Coalition for the environment brings together the many suggested benefits of implementing these technologies. The diagram also provokes some questions that may interest us in our project; Does GSI represent a paradigmatic shift in techniques of stormwater management? Does natural or environmental mimicry in engineering projects act as a corrective to the anthropocene, or are these technologies merely a response? How are the social, economic, and technical benefits of GSI calculated and have attendent burdens been considered as well?