hydrogen sulfide sensing review

Questions for H2S testing

are we still developing electronic sensors? weren’t they not sensitive enough?
acute vs. long-term hazardous exposure levels.
accessibility of development process -- need lab for safety? no--
- send mathew test strips and he will do “bokashi” comparison

Goal for month: Follow up with James? Organize research notes better, acceptable exposure levels--get mat started on this. Proposed goal for three months: identify ways to test this without a gas well - like with compost or poop, more public events to build/test this tool, calibrate with LUMCON, Intrepretation Proposed goal for six months: Field testing, more photos of this being built/tested Proposed over all goal for year: - consolidation of build instructions and price lists

2012 tool goals:

more public events to build/test this tool
identify ways to test this without a gas well - like with compost or poop
better identify specific sites where it could be useful, or it could be tested. exact locations, like “Rick’s backyard” or “my faucet”
once data is captured and documented with the prototype, starting to think about how that information can be presented/analyzed, incorporated into effecting change -- how do you act on it? storyboards...
consolidation of build instructions and price lists

Overall: looks good, could use a bit of work on organizing the research for newcomers, ready for fieldwork and testing in public events.

History/context of tool

what inspired it? Garfield, CO, h2s sink contamination
who (all) designed/developed/tested it? Where? - James Schaffroth and Sara Wylie. Jeff Warren (digital) Shannon Dosemagen, Battlement Mesa Citizen's Alliance, and LUMCON.
where has it been used and how did it go? - James’ Providence, RI apartment, ongoing?
how specialized is demand for the tool? - mostly in gas extraction sites?

Replicability

documentation, transmission to new users - leading image of circuit board is nice, notes offer Arduino code. James’ diagram is nice but a bit abstract
- exposure level info
tools needed? - good listing of materials for film technique, require a little bit of digging in the research notes. No parts list for circuit but good photographs and diagrams (with a bit of digging)
skills needed? - what knowledge does it assume? difficulty? - Film technique seems manageable by almost anyone. Circuit technique assumes Arduino familiarity.
materials needed - supply chain limitations - good links for purchasing all film materials, though no price list apparent. no clear parts list for circuit and no link to where to purchase the figaro sensor.
safety - exposure to H2S warnings might be a good idea

Development

what is it costing us in staff hours?
what is it costing in materials? - no price lists yet (incorrect, there are, but buried)
COTS (consumer-off-the-shelf) effects - Very nice reuse of film, should be easy to get a hold of. Arduino is easy to acquire in many places, but the Figaro sensor may be a bottleneck

Maintenance

what are the per-use costs? - unknown, early stage
what are wearing parts? (frequency of replacement) - unknown, early stage

Accessibility/legibility

are there opportunities for people to participate/contribute - ample and well-described, in text, on the tool page. No events though.
formats: online/offline? - film requires no digital parts at all. Arduino will result in a long text log, which could benefit from overlay on a map, or graphing over time, and an easier way to view/browse data.
cost? (dollars, time) - posted for figaro sensor but nothing else that I could find, but early stage
access to materials, components - see above, Figaro sensor bottleneck. Film sounds fine.
language barrier? - early stage
language: domain-specific, insider/outsider - very accessible, not much jargon (“assay”). Could better show an actual strip of film before/after exposure.

Change effected

how has it measurably/materially affected:
local ecology - early stage
available/actionable information? - early stage, would be nice to see this tested soon
decision making - early stage
legal, policy, regulatory - early stage
enables participation in a formerly closed information loop - could use some context about how gasfield workers use sensors already and the availability/ability/cost of commercial sensors on the market already. But yes, most people don’t have these, so if people get/use them, this will improve

Future: