This sample (taken from the Appomattox river) was collected at 9:00 am on 01/14/16. Distance from Hercules chemical plant is less than .25 miles. Analysis revealed; 1) Aminopyrazole derivatives @ 410.92 nm 2) dipyrrometheneboron difluorides (BDP) Suspected organophosphates, but I need to fashion a better prep for detection in the sample. [](//i.publiclab.org/system/images/photos/000/013/647/original/citypoint.jpg) [](//i.publiclab.org/system/images/photos/000/013/648/original/20160114_122746.jpg) protocol question: Sampling-Are you sampling upstream of the suspect site to ensure no previous C(ontamination)? What is your sampling CONTROL?...