| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| jeffalk | "If no one has volunteered to help them out, I'd be glad to try. Send me an email for a contact person. Or send them my email: joanjeff@centurylin..." | Read more » | over 6 years ago | |||
| jeffalk | "HI, Thanks for the update. I have a few questions though. You are apparently enthralled by the EPA Air Quality Index. Why?? My understanding, at ..." | Read more » | over 6 years ago | |||
| jeffalk | "Some hopefully helpful comments: particulate matter in air is very different than lead concentration in soil. PM2.5 has a regional aspect. To see t..." | Read more » | over 6 years ago | |||
| jeffalk | " My quick perusal of the attached pdf didn't find anything about effects of humidity. What you say about humidity effecting size makes sense but ..." | Read more » | over 7 years ago | |||
| jeffalk | " Yes is the simple answer: high humidity and/or moisture can effect particulate counts by raising them. Once you accept this the next step is how..." | Read more » | over 7 years ago | |||
| jeffalk | "Nicely done @matthew. I'm sure you all had a lot of fun. A few comments: Sometimes the text says the monitoring is for pm10 whereas the notes say ..." | Read more » | over 7 years ago | |||
| jeffalk | "Matthew: Please look again at the "Current Mine Information" you posted with your question. It has "Opr. Begin Date" of 6/1/2013 for Hoffman Constr..." | Read more » | over 7 years ago | |||
| jeffalk | "Hi Matthew, We met briefly years ago when you visited with Mike O'Connor in Buffalo County Wisconsin. Since then I've hopefully learned a bit more..." | Read more » | over 7 years ago | |||
| jeffalk | "Please excuse this basic question but what makes you think that all such devices should calibrate with the same resistance? You've shown that for s..." | Read more » | almost 8 years ago | |||
| jeffalk | "kevinvivergy's referred to website is a great example of technology in the hands of techies. They need to learn that more data doesn't always tra..." | Read more » | about 9 years ago | |||
| jeffalk | "You probably know about the EPA site with monitoring data around the Chicago coke facilities. The EPA data could be used to compare to whatever dat..." | Read more » | about 9 years ago | |||
| jeffalk | "It's my understanding that the Dylos is the only monitor of those mentioned that is calibrated by its manufacturer. That implies that some comparis..." | Read more » | about 9 years ago |