Working with someone who has a small agricultural pond that experiences water leakage around where the vertical walls of the concrete outlet structure meet the earthen / grass side slopes of the pond. When the pond is drained, you can see small crevices / cracks / holes / macropores along and...
A good, seemingly nonbiased summary from the 538 site, with a focus on what mistakes (or deliberate wrongdoing) occurred after the switch to Flint River water was made, and elevated lead levels started showing up in water samples and blood tests...
I just saw the news, announced within the last hour, that Susan Hedman, head of EPA Region 5 (which oversees Michigan and five other Midwestern states) is resigning effective February 1st.
US EPA is saying that their role was to advise Michigan DEQ, and that it was Michigan DEQ's responsibility to determine/enforce any sort of corrective action.
Certainly does seem like some within EPA tried to disregard or at least downplay the findings of recommendations of Miguel Del Toral...
bimr,
I appreciate your input on some of the technical and chemical background.
I'm still not convinced there was no engineering failure and only a policy failure, or that the governor bears sole responsibility. Is it your contention that there was likely no safe way to use the Flint River as...
It sounds like there were some mistakes or bad decisions made by numerous different organizations, and I imagine it will take a while to find out the real story of the chain of events and decisions that led to this situation (if we ever do find out the true story)
I'm not a drinking water...
Was going to start a thread to discuss the Flint Michigan water crisis, but found one has already been started in the forum section:
Engineering Forums by Industry --> Forensic Engineering --> Engineering Failures and Disasters
http://www.eng-tips.com/viewthread.cfm?qid=402006
Thought that...
Practice, practice, practice - but of course you need to start somewhere...
Some books I've found helpful are Site Engineering for Landscape Architects by Strom and Nathan, Land Development Handbook by Sidney Dewberry of Dewberry & Davis (very comprehensive reference to land/site...
My take is that the hydraulic design criteria is "whatever gets into the storm sewer from the inlets during the 100-year design event must result in a calculated HGL 1' or more below gutter elevation." Inlet inflows would be calculated based on surface depth of flow during 100-year event (max...
I have licenses of both Autodesk Civil 3D and regular AutoCAD (both 2009). I'm pretty experienced in AutoCAD, and getting up to speed in Civil 3D.
For those of you that use Civil 3D, do you still also use regular AutoCAD sometimes?
I've now figured out how to get my Civil3D workspace/appearance...
Does anyone know what type of software an "sol" file extension is associated with?
I believe it is related to either StormNET, AutoCAD Civil 3D Storm / Sanitary Analysis (successor to StormNET) or one of the Hydraflow extensions to Civil 3D. It's some kind of input, output or database file for...
I recently acquired an older total station (Wild Heerbrugg / Leica TC 1000) that I would like to use to do some occasional topo surveying and construction staking.
I don't have a prism or prism pole. So my question is, are only certain models/kinds of prisms compatible with my instrument in...
Consulting engineers talk about how, as professional service providers, we should be selected and evaluated on our unique qualifications and the value we bring to clients, as opposed to being viewed as a commodity and chosen on price.
However, I think consultants/consulting firms need to get...
The New York Times has a couple of recent opinion columns by Bob Herbert on U.S. infrastructure deficiences and lack of funding. (My thoughts are U.S. focused but feel free to chime in with observations from other countries)
http://www.nytimes.com/2010/02/20/opinion/20herbert.html...
